source: vbox/trunk/src/VBox/VMM/VMMAll/IEMAllInstOneByte.cpp.h

/* $Id: IEMAllInstOneByte.cpp.h 104419 2024-04-24 14:32:29Z vboxsync $ */
/** @file
 * IEM - Instruction Decoding and Emulation.
 */

/*
 * Copyright (C) 2011-2023 Oracle and/or its affiliates.
 *
 * This file is part of VirtualBox base platform packages, as
 * available from https://www.virtualbox.org.
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation, in version 3 of the
 * License.
 *
 * This program is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, see <https://www.gnu.org/licenses>.
 *
 * SPDX-License-Identifier: GPL-3.0-only
 */


/*******************************************************************************
*   Global Variables                                                           *
*******************************************************************************/
extern const PFNIEMOP g_apfnOneByteMap[256]; /* not static since we need to forward declare it. */

/* Instruction group definitions: */

/** @defgroup og_gen    General
 * @{ */
 /** @defgroup og_gen_arith     Arithmetic
  * @{  */
  /** @defgroup og_gen_arith_bin    Binary numbers */
  /** @defgroup og_gen_arith_dec    Decimal numbers */
 /** @} */
/** @} */

/** @defgroup og_stack Stack
 * @{ */
 /** @defgroup og_stack_sreg    Segment registers */
/** @} */

/** @defgroup og_prefix     Prefixes */
/** @defgroup og_escapes    Escape bytes */



/** @name One byte opcodes.
 * @{
 */

/**
 * Special case body for bytes instruction like SUB and XOR that can be used
 * to zero a register.
 *
 * This can be used both for the r8_rm and rm_r8 forms since it's working on the
 * same register.
 */
#define IEMOP_BODY_BINARY_r8_SAME_REG_ZERO(a_bRm) \
    if (   (a_bRm >> X86_MODRM_REG_SHIFT) == ((bRm & X86_MODRM_RM_MASK) | (X86_MOD_REG << X86_MODRM_REG_SHIFT)) \
        && pVCpu->iem.s.uRexReg == pVCpu->iem.s.uRexB) \
    { \
        IEM_MC_BEGIN(0, 0); \
        IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX(); \
        IEM_MC_STORE_GREG_U8_CONST(IEM_GET_MODRM_REG(pVCpu, a_bRm), 0); \
        IEM_MC_LOCAL_EFLAGS(fEFlags); \
        IEM_MC_AND_LOCAL_U32(fEFlags, ~(uint32_t)X86_EFL_STATUS_BITS); \
        IEM_MC_OR_LOCAL_U32(fEFlags, X86_EFL_PF | X86_EFL_ZF); \
        IEM_MC_COMMIT_EFLAGS(fEFlags); \
        IEM_MC_ADVANCE_RIP_AND_FINISH(); \
        IEM_MC_END(); \
    } ((void)0)

/**
 * Body for instructions like ADD, AND, OR, TEST, CMP, ++ with a byte
 * memory/register as the destination.
 */
#define IEMOP_BODY_BINARY_rm_r8_RW(a_bRm, a_InsNm, a_fRegRegNativeArchs, a_fMemRegNativeArchs) \
    /* \
     * If rm is denoting a register, no more instruction bytes. \
     */ \
    if (IEM_IS_MODRM_REG_MODE(a_bRm)) \
    { \
        IEM_MC_BEGIN(0, 0); \
        IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX(); \
        IEM_MC_ARG(uint8_t,         u8Src,   2); \
        IEM_MC_FETCH_GREG_U8(u8Src, IEM_GET_MODRM_REG(pVCpu, a_bRm)); \
        IEM_MC_NATIVE_IF(a_fRegRegNativeArchs) { \
            IEM_MC_LOCAL(uint8_t,   u8Dst); \
            IEM_MC_FETCH_GREG_U8(u8Dst, IEM_GET_MODRM_RM(pVCpu, a_bRm)); \
            IEM_MC_LOCAL_EFLAGS(uEFlags); \
            IEM_MC_NATIVE_EMIT_4(RT_CONCAT3(iemNativeEmit_,a_InsNm,_r_r_efl), u8Dst, u8Src, uEFlags, 8); \
            IEM_MC_STORE_GREG_U8(IEM_GET_MODRM_RM(pVCpu, a_bRm), u8Dst); \
            IEM_MC_COMMIT_EFLAGS_OPT(uEFlags); \
        } IEM_MC_NATIVE_ELSE() { \
            IEM_MC_ARG(uint8_t *,   pu8Dst,  1); \
            IEM_MC_REF_GREG_U8(pu8Dst, IEM_GET_MODRM_RM(pVCpu, a_bRm)); \
            IEM_MC_ARG_EFLAGS(      fEFlags, 0); \
            IEM_MC_CALL_AIMPL_3(uint32_t, fEFlagsRet, RT_CONCAT3(iemAImpl_,a_InsNm,_u8), fEFlags, pu8Dst, u8Src); \
            IEM_MC_COMMIT_EFLAGS_OPT(fEFlagsRet); \
        } IEM_MC_NATIVE_ENDIF(); \
        IEM_MC_ADVANCE_RIP_AND_FINISH(); \
        IEM_MC_END(); \
    } \
    else \
    { \
        /* \
         * We're accessing memory. \
         */ \
        if (!(pVCpu->iem.s.fPrefixes & IEM_OP_PRF_LOCK) || (pVCpu->iem.s.fExec & IEM_F_X86_DISREGARD_LOCK)) \
        { \
            IEM_MC_BEGIN(0, 0); \
            IEM_MC_LOCAL(RTGCPTR,  GCPtrEffDst); \
            IEM_MC_CALC_RM_EFF_ADDR(GCPtrEffDst, a_bRm, 0); \
            IEMOP_HLP_DONE_DECODING(); \
            \
            IEM_MC_LOCAL(uint8_t,   bUnmapInfo); \
            IEM_MC_ARG(uint8_t *,   pu8Dst,         1); \
            IEM_MC_MEM_MAP_U8_RW(pu8Dst, bUnmapInfo, pVCpu->iem.s.iEffSeg, GCPtrEffDst); \
            IEM_MC_ARG(uint8_t,     u8Src,          2); \
            IEM_MC_FETCH_GREG_U8(u8Src, IEM_GET_MODRM_REG(pVCpu, a_bRm)); \
            IEM_MC_ARG_EFLAGS(      fEFlags,        0); \
            IEM_MC_CALL_AIMPL_3(uint32_t, fEFlagsRet, RT_CONCAT3(iemAImpl_,a_InsNm,_u8), fEFlags, pu8Dst, u8Src); \
            \
            IEM_MC_MEM_COMMIT_AND_UNMAP_RW(bUnmapInfo); \
            IEM_MC_COMMIT_EFLAGS(fEFlagsRet); \
            IEM_MC_ADVANCE_RIP_AND_FINISH(); \
            IEM_MC_END(); \
        } \
        else \
        { \
            IEM_MC_BEGIN(0, 0); \
            IEM_MC_LOCAL(RTGCPTR, GCPtrEffDst); \
            IEM_MC_CALC_RM_EFF_ADDR(GCPtrEffDst, a_bRm, 0); \
            IEMOP_HLP_DONE_DECODING(); \
            \
            IEM_MC_LOCAL(uint8_t,   bMapInfoDst); \
            IEM_MC_ARG(uint8_t *,   pu8Dst,         1); \
            IEM_MC_MEM_MAP_U8_ATOMIC(pu8Dst, bMapInfoDst, pVCpu->iem.s.iEffSeg, GCPtrEffDst); \
            IEM_MC_ARG(uint8_t,     u8Src,          2); \
            IEM_MC_FETCH_GREG_U8(u8Src, IEM_GET_MODRM_REG(pVCpu, a_bRm)); \
            IEM_MC_ARG_EFLAGS(      fEFlagsIn,      0); \
            IEM_MC_CALL_AIMPL_3(uint32_t, fEFlagsRet, RT_CONCAT3(iemAImpl_,a_InsNm,_u8_locked), fEFlagsIn, pu8Dst, u8Src); \
            \
            IEM_MC_MEM_COMMIT_AND_UNMAP_ATOMIC(bMapInfoDst); \
            IEM_MC_COMMIT_EFLAGS(fEFlagsRet); \
            IEM_MC_ADVANCE_RIP_AND_FINISH(); \
            IEM_MC_END(); \
        } \
    } \
    (void)0

/**
 * Body for instructions like TEST & CMP with a byte memory/registers as
 * operands.
 */
#define IEMOP_BODY_BINARY_rm_r8_RO(a_bRm, a_fnNormalU8, a_EmitterBasename, a_fNativeArchs) \
    /* \
     * If rm is denoting a register, no more instruction bytes. \
     */ \
    if (IEM_IS_MODRM_REG_MODE(a_bRm)) \
    { \
        IEM_MC_BEGIN(0, 0); \
        IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX(); \
        IEM_MC_ARG(uint8_t,         u8Src,      2); \
        IEM_MC_FETCH_GREG_U8(u8Src, IEM_GET_MODRM_REG(pVCpu, a_bRm)); \
        IEM_MC_NATIVE_IF(a_fNativeArchs) { \
            IEM_MC_LOCAL(uint8_t,   u8Dst); \
            IEM_MC_FETCH_GREG_U8(u8Dst, IEM_GET_MODRM_RM(pVCpu, a_bRm)); \
            IEM_MC_LOCAL_EFLAGS(uEFlags); \
            IEM_MC_NATIVE_EMIT_4(RT_CONCAT3(iemNativeEmit_,a_EmitterBasename,_r_r_efl), u8Dst, u8Src, uEFlags, 8); \
            IEM_MC_COMMIT_EFLAGS_OPT(uEFlags); \
        } IEM_MC_NATIVE_ELSE() { \
            IEM_MC_ARG(uint8_t *,   pu8Dst,     1); \
            IEM_MC_REF_GREG_U8(pu8Dst, IEM_GET_MODRM_RM(pVCpu, a_bRm)); \
            IEM_MC_ARG_EFLAGS(      fEFlagsIn,  0); \
            IEM_MC_CALL_AIMPL_3(uint32_t, fEFlagsRet, a_fnNormalU8, fEFlagsIn, pu8Dst, u8Src); \
            IEM_MC_COMMIT_EFLAGS(fEFlagsRet); \
        } IEM_MC_NATIVE_ENDIF(); \
        IEM_MC_ADVANCE_RIP_AND_FINISH(); \
        IEM_MC_END(); \
    } \
    else \
    { \
        /* \
         * We're accessing memory. \
         */ \
        if (!(pVCpu->iem.s.fPrefixes & IEM_OP_PRF_LOCK)) \
        { \
            IEM_MC_BEGIN(0, 0); \
            IEM_MC_LOCAL(RTGCPTR, GCPtrEffDst); \
            IEM_MC_CALC_RM_EFF_ADDR(GCPtrEffDst, a_bRm, 0); \
            IEMOP_HLP_DONE_DECODING(); \
            IEM_MC_NATIVE_IF(0) { \
                IEM_MC_LOCAL(uint8_t,       u8Dst); \
                IEM_MC_FETCH_MEM_U8(u8Dst, pVCpu->iem.s.iEffSeg, GCPtrEffDst); \
                IEM_MC_LOCAL(uint8_t,       u8SrcEmit); \
                IEM_MC_FETCH_GREG_U8(u8SrcEmit, IEM_GET_MODRM_REG(pVCpu, a_bRm)); \
                IEM_MC_LOCAL_EFLAGS(uEFlags); \
                IEM_MC_NATIVE_EMIT_4(RT_CONCAT3(iemNativeEmit_,a_EmitterBasename,_r_r_efl), u8Dst, u8SrcEmit, uEFlags, 8); \
                IEM_MC_COMMIT_EFLAGS_OPT(uEFlags); \
            } IEM_MC_NATIVE_ELSE() { \
                IEM_MC_LOCAL(uint8_t,       bUnmapInfo); \
                IEM_MC_ARG(uint8_t const *, pu8Dst,     1); \
                IEM_MC_MEM_MAP_U8_RO(pu8Dst, bUnmapInfo, pVCpu->iem.s.iEffSeg, GCPtrEffDst); \
                IEM_MC_ARG(uint8_t,         u8Src,      2); \
                IEM_MC_FETCH_GREG_U8(u8Src, IEM_GET_MODRM_REG(pVCpu, a_bRm)); \
                IEM_MC_ARG_EFLAGS(          fEFlagsIn,  0); \
                IEM_MC_CALL_AIMPL_3(uint32_t, fEFlagsRet, a_fnNormalU8, fEFlagsIn, pu8Dst, u8Src); \
                IEM_MC_MEM_COMMIT_AND_UNMAP_RO(bUnmapInfo); \
                IEM_MC_COMMIT_EFLAGS(fEFlagsRet); \
            } IEM_MC_NATIVE_ENDIF(); \
            IEM_MC_ADVANCE_RIP_AND_FINISH(); \
            IEM_MC_END(); \
        } \
        else \
        { \
            /** @todo we should probably decode the address first. */ \
            IEMOP_HLP_DONE_DECODING(); \
            IEMOP_RAISE_INVALID_LOCK_PREFIX_RET(); \
        } \
    } \
    (void)0

/**
 * Body for byte instructions like ADD, AND, OR, ++ with a register as the
 * destination.
 */
#define IEMOP_BODY_BINARY_r8_rm(a_bRm, a_InsNm, a_fNativeArchs) \
    /* \
     * If rm is denoting a register, no more instruction bytes. \
     */ \
    if (IEM_IS_MODRM_REG_MODE(a_bRm)) \
    { \
        IEM_MC_BEGIN(0, 0); \
        IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX(); \
        IEM_MC_ARG(uint8_t,         u8Src,      2); \
        IEM_MC_FETCH_GREG_U8(u8Src, IEM_GET_MODRM_RM(pVCpu, a_bRm)); \
        IEM_MC_NATIVE_IF(a_fNativeArchs) { \
            IEM_MC_LOCAL(uint8_t,   u8Dst); \
            IEM_MC_FETCH_GREG_U8(u8Dst, IEM_GET_MODRM_REG(pVCpu, a_bRm)); \
            IEM_MC_LOCAL_EFLAGS(uEFlags); \
            IEM_MC_NATIVE_EMIT_4(RT_CONCAT3(iemNativeEmit_,a_InsNm,_r_r_efl), u8Dst, u8Src, uEFlags, 8); \
            IEM_MC_STORE_GREG_U8(IEM_GET_MODRM_REG(pVCpu, a_bRm), u8Dst); \
            IEM_MC_COMMIT_EFLAGS_OPT(uEFlags); \
        } IEM_MC_NATIVE_ELSE() { \
            IEM_MC_ARG(uint8_t *,   pu8Dst,     1); \
            IEM_MC_REF_GREG_U8(pu8Dst, IEM_GET_MODRM_REG(pVCpu, a_bRm)); \
            IEM_MC_ARG_EFLAGS(      fEFlagsIn,  0); \
            IEM_MC_CALL_AIMPL_3(uint32_t, fEFlagsRet, RT_CONCAT3(iemAImpl_,a_InsNm,_u8), fEFlagsIn, pu8Dst, u8Src); \
            IEM_MC_COMMIT_EFLAGS(fEFlagsRet); \
        } IEM_MC_NATIVE_ENDIF(); \
        IEM_MC_ADVANCE_RIP_AND_FINISH(); \
        IEM_MC_END(); \
    } \
    else \
    { \
        /* \
         * We're accessing memory. \
         */ \
        IEM_MC_BEGIN(0, 0); \
        IEM_MC_LOCAL(RTGCPTR,  GCPtrEffDst); \
        IEM_MC_CALC_RM_EFF_ADDR(GCPtrEffDst, a_bRm, 0); \
        IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX(); \
        IEM_MC_ARG(uint8_t,         u8Src,      2); \
        IEM_MC_FETCH_MEM_U8(u8Src, pVCpu->iem.s.iEffSeg, GCPtrEffDst); \
        IEM_MC_NATIVE_IF(a_fNativeArchs) { \
            IEM_MC_LOCAL(uint8_t,   u8Dst); \
            IEM_MC_FETCH_GREG_U8(u8Dst, IEM_GET_MODRM_REG(pVCpu, a_bRm)); \
            IEM_MC_LOCAL_EFLAGS(uEFlags); \
            IEM_MC_NATIVE_EMIT_4(RT_CONCAT3(iemNativeEmit_,a_InsNm,_r_r_efl), u8Dst, u8Src, uEFlags, 8); \
            IEM_MC_STORE_GREG_U8(IEM_GET_MODRM_REG(pVCpu, a_bRm), u8Dst); \
            IEM_MC_COMMIT_EFLAGS_OPT(uEFlags); \
        } IEM_MC_NATIVE_ELSE() { \
            IEM_MC_ARG(uint8_t *,   pu8Dst,     1); \
            IEM_MC_REF_GREG_U8(pu8Dst, IEM_GET_MODRM_REG(pVCpu, a_bRm)); \
            IEM_MC_ARG_EFLAGS(      fEFlagsIn,  0); \
            IEM_MC_CALL_AIMPL_3(uint32_t, fEFlagsRet, RT_CONCAT3(iemAImpl_,a_InsNm,_u8), fEFlagsIn, pu8Dst, u8Src); \
            IEM_MC_COMMIT_EFLAGS(fEFlagsRet); \
        } IEM_MC_NATIVE_ENDIF(); \
        IEM_MC_ADVANCE_RIP_AND_FINISH(); \
        IEM_MC_END(); \
    } \
    (void)0

/**
 * Body for byte instruction CMP with a register as the destination.
 */
#define IEMOP_BODY_BINARY_r8_rm_RO(a_bRm, a_InsNm, a_fNativeArchs) \
    /* \
     * If rm is denoting a register, no more instruction bytes. \
     */ \
    if (IEM_IS_MODRM_REG_MODE(a_bRm)) \
    { \
        IEM_MC_BEGIN(0, 0); \
        IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX(); \
        IEM_MC_ARG(uint8_t,         u8Src,      2); \
        IEM_MC_FETCH_GREG_U8(u8Src, IEM_GET_MODRM_RM(pVCpu, a_bRm)); \
        IEM_MC_NATIVE_IF(a_fNativeArchs) { \
            IEM_MC_LOCAL(uint8_t,   u8Dst); \
            IEM_MC_FETCH_GREG_U8(u8Dst, IEM_GET_MODRM_REG(pVCpu, a_bRm)); \
            IEM_MC_LOCAL_EFLAGS(uEFlags); \
            IEM_MC_NATIVE_EMIT_4(RT_CONCAT3(iemNativeEmit_,a_InsNm,_r_r_efl), u8Dst, u8Src, uEFlags, 8); \
            IEM_MC_COMMIT_EFLAGS_OPT(uEFlags); \
        } IEM_MC_NATIVE_ELSE() { \
            IEM_MC_ARG(uint8_t *,   pu8Dst,     1); \
            IEM_MC_REF_GREG_U8(pu8Dst, IEM_GET_MODRM_REG(pVCpu, a_bRm)); \
            IEM_MC_ARG_EFLAGS(      fEFlagsIn,  0); \
            IEM_MC_CALL_AIMPL_3(uint32_t, fEFlagsRet, RT_CONCAT3(iemAImpl_,a_InsNm,_u8), fEFlagsIn, pu8Dst, u8Src); \
            IEM_MC_COMMIT_EFLAGS(fEFlagsRet); \
        } IEM_MC_NATIVE_ENDIF(); \
        IEM_MC_ADVANCE_RIP_AND_FINISH(); \
        IEM_MC_END(); \
    } \
    else \
    { \
        /* \
         * We're accessing memory. \
         */ \
        IEM_MC_BEGIN(0, 0); \
        IEM_MC_LOCAL(RTGCPTR,  GCPtrEffDst); \
        IEM_MC_CALC_RM_EFF_ADDR(GCPtrEffDst, a_bRm, 0); \
        IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX(); \
        IEM_MC_ARG(uint8_t,         u8Src,      2); \
        IEM_MC_FETCH_MEM_U8(u8Src, pVCpu->iem.s.iEffSeg, GCPtrEffDst); \
        IEM_MC_NATIVE_IF(a_fNativeArchs) { \
            IEM_MC_LOCAL(uint8_t,   u8Dst); \
            IEM_MC_FETCH_GREG_U8(u8Dst, IEM_GET_MODRM_REG(pVCpu, a_bRm)); \
            IEM_MC_LOCAL_EFLAGS(uEFlags); \
            IEM_MC_NATIVE_EMIT_4(RT_CONCAT3(iemNativeEmit_,a_InsNm,_r_r_efl), u8Dst, u8Src, uEFlags, 8); \
            IEM_MC_COMMIT_EFLAGS_OPT(uEFlags); \
        } IEM_MC_NATIVE_ELSE() { \
            IEM_MC_ARG(uint8_t *,   pu8Dst,     1); \
            IEM_MC_REF_GREG_U8(pu8Dst, IEM_GET_MODRM_REG(pVCpu, a_bRm)); \
            IEM_MC_ARG_EFLAGS(      fEFlagsIn,  0); \
            IEM_MC_CALL_AIMPL_3(uint32_t, fEFlagsRet, RT_CONCAT3(iemAImpl_,a_InsNm,_u8), fEFlagsIn, pu8Dst, u8Src); \
            IEM_MC_COMMIT_EFLAGS(fEFlagsRet); \
        } IEM_MC_NATIVE_ENDIF(); \
        IEM_MC_ADVANCE_RIP_AND_FINISH(); \
        IEM_MC_END(); \
    } \
    (void)0


/**
 * Body for word/dword/qword instructions like ADD, AND, OR, ++ with
 * memory/register as the destination.
 */
#define IEMOP_BODY_BINARY_rm_rv_RW(a_bRm, a_InsNm, a_fRegRegNativeArchs, a_fMemRegNativeArchs) \
    /* \
     * If rm is denoting a register, no more instruction bytes. \
     */ \
    if (IEM_IS_MODRM_REG_MODE(a_bRm)) \
    { \
        switch (pVCpu->iem.s.enmEffOpSize) \
        { \
            case IEMMODE_16BIT: \
                IEM_MC_BEGIN(0, 0); \
                IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX(); \
                IEM_MC_ARG(uint16_t,        u16Src,     2); \
                IEM_MC_FETCH_GREG_U16(u16Src, IEM_GET_MODRM_REG(pVCpu, a_bRm)); \
                IEM_MC_NATIVE_IF(a_fRegRegNativeArchs) { \
                    IEM_MC_LOCAL(uint16_t,  u16Dst); \
                    IEM_MC_FETCH_GREG_U16(u16Dst, IEM_GET_MODRM_RM(pVCpu, a_bRm)); \
                    IEM_MC_LOCAL_EFLAGS(uEFlags); \
                    IEM_MC_NATIVE_EMIT_4(RT_CONCAT3(iemNativeEmit_,a_InsNm,_r_r_efl), u16Dst, u16Src, uEFlags, 16); \
                    IEM_MC_STORE_GREG_U16(IEM_GET_MODRM_RM(pVCpu, a_bRm), u16Dst); \
                    IEM_MC_COMMIT_EFLAGS_OPT(uEFlags); \
                } IEM_MC_NATIVE_ELSE() { \
                    IEM_MC_ARG(uint16_t *,  pu16Dst,    1); \
                    IEM_MC_REF_GREG_U16(pu16Dst, IEM_GET_MODRM_RM(pVCpu, a_bRm)); \
                    IEM_MC_ARG_EFLAGS(      fEFlagsIn,  0); \
                    IEM_MC_CALL_AIMPL_3(uint32_t, fEFlagsRet, RT_CONCAT3(iemAImpl_,a_InsNm,_u16), fEFlagsIn, pu16Dst, u16Src); \
                    IEM_MC_COMMIT_EFLAGS(fEFlagsRet); \
                } IEM_MC_NATIVE_ENDIF(); \
                IEM_MC_ADVANCE_RIP_AND_FINISH(); \
                IEM_MC_END(); \
                break; \
            \
            case IEMMODE_32BIT: \
                IEM_MC_BEGIN(IEM_MC_F_MIN_386, 0); \
                IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX(); \
                IEM_MC_ARG(uint32_t,        u32Src,  2); \
                IEM_MC_FETCH_GREG_U32(u32Src, IEM_GET_MODRM_REG(pVCpu, a_bRm)); \
                IEM_MC_NATIVE_IF(a_fRegRegNativeArchs) { \
                    IEM_MC_LOCAL(uint32_t,  u32Dst); \
                    IEM_MC_FETCH_GREG_U32(u32Dst, IEM_GET_MODRM_RM(pVCpu, a_bRm)); \
                    IEM_MC_LOCAL_EFLAGS(uEFlags); \
                    IEM_MC_NATIVE_EMIT_4(RT_CONCAT3(iemNativeEmit_,a_InsNm,_r_r_efl), u32Dst, u32Src, uEFlags, 32); \
                    IEM_MC_STORE_GREG_U32(IEM_GET_MODRM_RM(pVCpu, a_bRm), u32Dst); \
                    IEM_MC_COMMIT_EFLAGS_OPT(uEFlags); \
                } IEM_MC_NATIVE_ELSE() { \
                    IEM_MC_ARG(uint32_t *,  pu32Dst,    1); \
                    IEM_MC_REF_GREG_U32(pu32Dst, IEM_GET_MODRM_RM(pVCpu, a_bRm)); \
                    IEM_MC_ARG_EFLAGS(      fEFlagsIn,  0); \
                    IEM_MC_CALL_AIMPL_3(uint32_t, fEFlagsRet, RT_CONCAT3(iemAImpl_,a_InsNm,_u32), fEFlagsIn, pu32Dst, u32Src); \
                    IEM_MC_CLEAR_HIGH_GREG_U64(IEM_GET_MODRM_RM(pVCpu, a_bRm)); \
                    IEM_MC_COMMIT_EFLAGS(fEFlagsRet); \
                } IEM_MC_NATIVE_ENDIF(); \
                IEM_MC_ADVANCE_RIP_AND_FINISH(); \
                IEM_MC_END(); \
                break; \
            \
            case IEMMODE_64BIT: \
                IEM_MC_BEGIN(IEM_MC_F_64BIT, 0); \
                IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX(); \
                IEM_MC_ARG(uint64_t,        u64Src,  2); \
                IEM_MC_FETCH_GREG_U64(u64Src, IEM_GET_MODRM_REG(pVCpu, a_bRm)); \
                IEM_MC_NATIVE_IF(a_fRegRegNativeArchs) { \
                    IEM_MC_LOCAL(uint64_t,  u64Dst); \
                    IEM_MC_FETCH_GREG_U64(u64Dst, IEM_GET_MODRM_RM(pVCpu, a_bRm)); \
                    IEM_MC_LOCAL_EFLAGS(uEFlags); \
                    IEM_MC_NATIVE_EMIT_4(RT_CONCAT3(iemNativeEmit_,a_InsNm,_r_r_efl), u64Dst, u64Src, uEFlags, 64); \
                    IEM_MC_STORE_GREG_U64(IEM_GET_MODRM_RM(pVCpu, a_bRm), u64Dst); \
                    IEM_MC_COMMIT_EFLAGS_OPT(uEFlags); \
                } IEM_MC_NATIVE_ELSE() { \
                    IEM_MC_ARG(uint64_t *,  pu64Dst,    1); \
                    IEM_MC_REF_GREG_U64(pu64Dst, IEM_GET_MODRM_RM(pVCpu, a_bRm)); \
                    IEM_MC_ARG_EFLAGS(      fEFlagsIn,  0); \
                    IEM_MC_CALL_AIMPL_3(uint32_t, fEFlagsRet, RT_CONCAT3(iemAImpl_,a_InsNm,_u64), fEFlagsIn, pu64Dst, u64Src); \
                    IEM_MC_COMMIT_EFLAGS(fEFlagsRet); \
                } IEM_MC_NATIVE_ENDIF(); \
                IEM_MC_ADVANCE_RIP_AND_FINISH(); \
                IEM_MC_END(); \
                break; \
            \
            IEM_NOT_REACHED_DEFAULT_CASE_RET(); \
        } \
    } \
    else \
    { \
        /* \
         * We're accessing memory. \
         */ \
        if (!(pVCpu->iem.s.fPrefixes & IEM_OP_PRF_LOCK) || (pVCpu->iem.s.fExec & IEM_F_X86_DISREGARD_LOCK)) \
        { \
            switch (pVCpu->iem.s.enmEffOpSize) \
            { \
                case IEMMODE_16BIT: \
                    IEM_MC_BEGIN(0, 0); \
                    IEM_MC_LOCAL(RTGCPTR, GCPtrEffDst); \
                    IEM_MC_CALC_RM_EFF_ADDR(GCPtrEffDst, a_bRm, 0); \
                    IEMOP_HLP_DONE_DECODING(); \
                    \
                    IEM_MC_LOCAL(uint8_t,   bUnmapInfo); \
                    IEM_MC_ARG(uint16_t *,  pu16Dst,    1); \
                    IEM_MC_MEM_MAP_U16_RW(pu16Dst, bUnmapInfo, pVCpu->iem.s.iEffSeg, GCPtrEffDst); \
                    IEM_MC_ARG(uint16_t,    u16Src,     2); \
                    IEM_MC_FETCH_GREG_U16(u16Src, IEM_GET_MODRM_REG(pVCpu, a_bRm)); \
                    IEM_MC_ARG_EFLAGS(      fEFlagsIn,  0); \
                    IEM_MC_CALL_AIMPL_3(uint32_t, fEFlagsRet, RT_CONCAT3(iemAImpl_,a_InsNm,_u16), fEFlagsIn, pu16Dst, u16Src); \
                    \
                    IEM_MC_MEM_COMMIT_AND_UNMAP_RW(bUnmapInfo); \
                    IEM_MC_COMMIT_EFLAGS(fEFlagsRet); \
                    IEM_MC_ADVANCE_RIP_AND_FINISH(); \
                    IEM_MC_END(); \
                    break; \
                \
                case IEMMODE_32BIT: \
                    IEM_MC_BEGIN(IEM_MC_F_MIN_386, 0); \
                    IEM_MC_LOCAL(RTGCPTR, GCPtrEffDst); \
                    IEM_MC_CALC_RM_EFF_ADDR(GCPtrEffDst, a_bRm, 0); \
                    IEMOP_HLP_DONE_DECODING(); \
                    \
                    IEM_MC_LOCAL(uint8_t,   bUnmapInfo); \
                    IEM_MC_ARG(uint32_t *,  pu32Dst,    1); \
                    IEM_MC_MEM_MAP_U32_RW(pu32Dst, bUnmapInfo, pVCpu->iem.s.iEffSeg, GCPtrEffDst); \
                    IEM_MC_ARG(uint32_t,    u32Src,     2); \
                    IEM_MC_FETCH_GREG_U32(u32Src, IEM_GET_MODRM_REG(pVCpu, a_bRm)); \
                    IEM_MC_ARG_EFLAGS(      fEFlagsIn,  0); \
                    IEM_MC_CALL_AIMPL_3(uint32_t, fEFlagsRet, RT_CONCAT3(iemAImpl_,a_InsNm,_u32), fEFlagsIn, pu32Dst, u32Src); \
                    \
                    IEM_MC_MEM_COMMIT_AND_UNMAP_RW(bUnmapInfo); \
                    IEM_MC_COMMIT_EFLAGS(fEFlagsRet); \
                    IEM_MC_ADVANCE_RIP_AND_FINISH(); \
                    IEM_MC_END(); \
                    break; \
                \
                case IEMMODE_64BIT: \
                    IEM_MC_BEGIN(IEM_MC_F_64BIT, 0); \
                    IEM_MC_LOCAL(RTGCPTR, GCPtrEffDst); \
                    IEM_MC_CALC_RM_EFF_ADDR(GCPtrEffDst, a_bRm, 0); \
                    IEMOP_HLP_DONE_DECODING(); \
                    \
                    IEM_MC_LOCAL(uint8_t,   bUnmapInfo); \
                    IEM_MC_ARG(uint64_t *,  pu64Dst,    1); \
                    IEM_MC_MEM_MAP_U64_RW(pu64Dst, bUnmapInfo, pVCpu->iem.s.iEffSeg, GCPtrEffDst); \
                    IEM_MC_ARG(uint64_t,    u64Src,     2); \
                    IEM_MC_FETCH_GREG_U64(u64Src, IEM_GET_MODRM_REG(pVCpu, a_bRm)); \
                    IEM_MC_ARG_EFLAGS(      fEFlagsIn,  0); \
                    IEM_MC_CALL_AIMPL_3(uint32_t, fEFlagsRet, RT_CONCAT3(iemAImpl_,a_InsNm,_u64), fEFlagsIn, pu64Dst, u64Src); \
                    \
                    IEM_MC_MEM_COMMIT_AND_UNMAP_RW(bUnmapInfo); \
                    IEM_MC_COMMIT_EFLAGS(fEFlagsRet); \
                    IEM_MC_ADVANCE_RIP_AND_FINISH(); \
                    IEM_MC_END(); \
                    break; \
                \
                IEM_NOT_REACHED_DEFAULT_CASE_RET(); \
            } \
        } \
        else \
        { \
            (void)0
/* Separate macro to work around parsing issue in IEMAllInstPython.py */
#define IEMOP_BODY_BINARY_rm_rv_LOCKED(a_bRm, a_InsNm) \
            switch (pVCpu->iem.s.enmEffOpSize) \
            { \
                case IEMMODE_16BIT: \
                    IEM_MC_BEGIN(0, 0); \
                    IEM_MC_LOCAL(RTGCPTR, GCPtrEffDst); \
                    IEM_MC_CALC_RM_EFF_ADDR(GCPtrEffDst, a_bRm, 0); \
                    IEMOP_HLP_DONE_DECODING(); \
                    \
                    IEM_MC_LOCAL(uint8_t, bUnmapInfo); \
                    IEM_MC_ARG(uint16_t *,  pu16Dst,    1); \
                    IEM_MC_MEM_MAP_U16_ATOMIC(pu16Dst, bUnmapInfo, pVCpu->iem.s.iEffSeg, GCPtrEffDst); \
                    IEM_MC_ARG(uint16_t,    u16Src,     2); \
                    IEM_MC_FETCH_GREG_U16(u16Src, IEM_GET_MODRM_REG(pVCpu, a_bRm)); \
                    IEM_MC_ARG_EFLAGS(      fEFlagsIn,  0); \
                    IEM_MC_CALL_AIMPL_3(uint32_t, fEFlagsRet, RT_CONCAT3(iemAImpl_,a_InsNm,_u16_locked), fEFlagsIn, pu16Dst, u16Src); \
                    \
                    IEM_MC_MEM_COMMIT_AND_UNMAP_ATOMIC(bUnmapInfo); \
                    IEM_MC_COMMIT_EFLAGS(fEFlagsRet); \
                    IEM_MC_ADVANCE_RIP_AND_FINISH(); \
                    IEM_MC_END(); \
                    break; \
                \
                case IEMMODE_32BIT: \
                    IEM_MC_BEGIN(IEM_MC_F_MIN_386, 0); \
                    IEM_MC_LOCAL(RTGCPTR, GCPtrEffDst); \
                    IEM_MC_CALC_RM_EFF_ADDR(GCPtrEffDst, a_bRm, 0); \
                    IEMOP_HLP_DONE_DECODING(); \
                    \
                    IEM_MC_LOCAL(uint8_t,   bUnmapInfo); \
                    IEM_MC_ARG(uint32_t *,  pu32Dst,    1); \
                    IEM_MC_MEM_MAP_U32_ATOMIC(pu32Dst, bUnmapInfo, pVCpu->iem.s.iEffSeg, GCPtrEffDst); \
                    IEM_MC_ARG(uint32_t,    u32Src,     2); \
                    IEM_MC_FETCH_GREG_U32(u32Src, IEM_GET_MODRM_REG(pVCpu, a_bRm)); \
                    IEM_MC_ARG_EFLAGS(      fEFlagsIn,  0); \
                    IEM_MC_CALL_AIMPL_3(uint32_t, fEFlagsRet, RT_CONCAT3(iemAImpl_,a_InsNm,_u32_locked), fEFlagsIn, pu32Dst, u32Src); \
                    \
                    IEM_MC_MEM_COMMIT_AND_UNMAP_ATOMIC(bUnmapInfo /* CMP,TEST */); \
                    IEM_MC_COMMIT_EFLAGS(fEFlagsRet); \
                    IEM_MC_ADVANCE_RIP_AND_FINISH(); \
                    IEM_MC_END(); \
                    break; \
                \
                case IEMMODE_64BIT: \
                    IEM_MC_BEGIN(IEM_MC_F_64BIT, 0); \
                    IEM_MC_LOCAL(RTGCPTR, GCPtrEffDst); \
                    IEM_MC_CALC_RM_EFF_ADDR(GCPtrEffDst, a_bRm, 0); \
                    IEMOP_HLP_DONE_DECODING(); \
                    \
                    IEM_MC_LOCAL(uint8_t,   bUnmapInfo); \
                    IEM_MC_ARG(uint64_t *,  pu64Dst,    1); \
                    IEM_MC_MEM_MAP_U64_ATOMIC(pu64Dst, bUnmapInfo, pVCpu->iem.s.iEffSeg, GCPtrEffDst); \
                    IEM_MC_ARG(uint64_t,    u64Src,     2); \
                    IEM_MC_FETCH_GREG_U64(u64Src, IEM_GET_MODRM_REG(pVCpu, a_bRm)); \
                    IEM_MC_ARG_EFLAGS(      fEFlagsIn,  0); \
                    IEM_MC_CALL_AIMPL_3(uint32_t, fEFlagsRet, RT_CONCAT3(iemAImpl_,a_InsNm,_u64_locked), fEFlagsIn, pu64Dst, u64Src); \
                    \
                    IEM_MC_MEM_COMMIT_AND_UNMAP_ATOMIC(bUnmapInfo); \
                    IEM_MC_COMMIT_EFLAGS(fEFlagsRet); \
                    IEM_MC_ADVANCE_RIP_AND_FINISH(); \
                    IEM_MC_END(); \
                    break; \
                \
                IEM_NOT_REACHED_DEFAULT_CASE_RET(); \
            } \
        } \
    } \
    (void)0

/**
 * Body for read-only word/dword/qword instructions like TEST and CMP with
 * memory/register as the destination.
 */
#define IEMOP_BODY_BINARY_rm_rv_RO(a_bRm, a_InsNm, a_fNativeArchs) \
    /* \
     * If rm is denoting a register, no more instruction bytes. \
     */ \
    if (IEM_IS_MODRM_REG_MODE(a_bRm)) \
    { \
        switch (pVCpu->iem.s.enmEffOpSize) \
        { \
            case IEMMODE_16BIT: \
                IEM_MC_BEGIN(0, 0); \
                IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX(); \
                IEM_MC_ARG(uint16_t,        u16Src,     2); \
                IEM_MC_FETCH_GREG_U16(u16Src, IEM_GET_MODRM_REG(pVCpu, a_bRm)); \
                IEM_MC_NATIVE_IF(a_fNativeArchs) { \
                    IEM_MC_LOCAL(uint16_t,  u16Dst); \
                    IEM_MC_FETCH_GREG_U16(u16Dst, IEM_GET_MODRM_RM(pVCpu, a_bRm)); \
                    IEM_MC_LOCAL_EFLAGS(uEFlags); \
                    IEM_MC_NATIVE_EMIT_4(RT_CONCAT3(iemNativeEmit_,a_InsNm,_r_r_efl), u16Dst, u16Src, uEFlags, 16); \
                    IEM_MC_COMMIT_EFLAGS_OPT(uEFlags); \
                } IEM_MC_NATIVE_ELSE() { \
                    IEM_MC_ARG(uint16_t *,  pu16Dst,    1); \
                    IEM_MC_REF_GREG_U16(pu16Dst, IEM_GET_MODRM_RM(pVCpu, a_bRm)); \
                    IEM_MC_ARG_EFLAGS(      fEFlagsIn,  0); \
                    IEM_MC_CALL_AIMPL_3(uint32_t, fEFlagsRet, RT_CONCAT3(iemAImpl_,a_InsNm,_u16), fEFlagsIn, pu16Dst, u16Src); \
                    IEM_MC_COMMIT_EFLAGS(fEFlagsRet); \
                } IEM_MC_NATIVE_ENDIF(); \
                IEM_MC_ADVANCE_RIP_AND_FINISH(); \
                IEM_MC_END(); \
                break; \
            \
            case IEMMODE_32BIT: \
                IEM_MC_BEGIN(IEM_MC_F_MIN_386, 0); \
                IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX(); \
                IEM_MC_ARG(uint32_t,        u32Src,     2); \
                IEM_MC_FETCH_GREG_U32(u32Src, IEM_GET_MODRM_REG(pVCpu, a_bRm)); \
                IEM_MC_NATIVE_IF(a_fNativeArchs) { \
                    IEM_MC_LOCAL(uint32_t,  u32Dst); \
                    IEM_MC_FETCH_GREG_U32(u32Dst, IEM_GET_MODRM_RM(pVCpu, a_bRm)); \
                    IEM_MC_LOCAL_EFLAGS(uEFlags); \
                    IEM_MC_NATIVE_EMIT_4(RT_CONCAT3(iemNativeEmit_,a_InsNm,_r_r_efl), u32Dst, u32Src, uEFlags, 32); \
                    IEM_MC_COMMIT_EFLAGS_OPT(uEFlags); \
                } IEM_MC_NATIVE_ELSE() { \
                    IEM_MC_ARG(uint32_t *,  pu32Dst,    1); \
                    IEM_MC_REF_GREG_U32(pu32Dst, IEM_GET_MODRM_RM(pVCpu, a_bRm)); \
                    IEM_MC_ARG_EFLAGS(      fEFlagsIn,  0); \
                    IEM_MC_CALL_AIMPL_3(uint32_t, fEFlagsRet, RT_CONCAT3(iemAImpl_,a_InsNm,_u32), fEFlagsIn, pu32Dst, u32Src); \
                    IEM_MC_COMMIT_EFLAGS(fEFlagsRet); \
                } IEM_MC_NATIVE_ENDIF(); \
                IEM_MC_ADVANCE_RIP_AND_FINISH(); \
                IEM_MC_END(); \
                break; \
            \
            case IEMMODE_64BIT: \
                IEM_MC_BEGIN(IEM_MC_F_64BIT, 0); \
                IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX(); \
                IEM_MC_ARG(uint64_t,        u64Src,     2); \
                IEM_MC_FETCH_GREG_U64(u64Src, IEM_GET_MODRM_REG(pVCpu, a_bRm)); \
                IEM_MC_NATIVE_IF(a_fNativeArchs) { \
                    IEM_MC_LOCAL(uint64_t,  u64Dst); \
                    IEM_MC_FETCH_GREG_U64(u64Dst, IEM_GET_MODRM_RM(pVCpu, a_bRm)); \
                    IEM_MC_LOCAL_EFLAGS(uEFlags); \
                    IEM_MC_NATIVE_EMIT_4(RT_CONCAT3(iemNativeEmit_,a_InsNm,_r_r_efl), u64Dst, u64Src, uEFlags, 64); \
                    IEM_MC_COMMIT_EFLAGS_OPT(uEFlags); \
                } IEM_MC_NATIVE_ELSE() { \
                    IEM_MC_ARG(uint64_t *,  pu64Dst,    1); \
                    IEM_MC_REF_GREG_U64(pu64Dst, IEM_GET_MODRM_RM(pVCpu, a_bRm)); \
                    IEM_MC_ARG_EFLAGS(      fEFlagsIn,  0); \
                    IEM_MC_CALL_AIMPL_3(uint32_t, fEFlagsRet, RT_CONCAT3(iemAImpl_,a_InsNm,_u64), fEFlagsIn, pu64Dst, u64Src); \
                    IEM_MC_COMMIT_EFLAGS(fEFlagsRet); \
                } IEM_MC_NATIVE_ENDIF(); \
                IEM_MC_ADVANCE_RIP_AND_FINISH(); \
                IEM_MC_END(); \
                break; \
            \
            IEM_NOT_REACHED_DEFAULT_CASE_RET(); \
        } \
    } \
    else \
    { \
        /* \
         * We're accessing memory. \
         */ \
        if (!(pVCpu->iem.s.fPrefixes & IEM_OP_PRF_LOCK) || (pVCpu->iem.s.fExec & IEM_F_X86_DISREGARD_LOCK)) \
        { \
            switch (pVCpu->iem.s.enmEffOpSize) \
            { \
                case IEMMODE_16BIT: \
                    IEM_MC_BEGIN(0, 0); \
                    IEM_MC_LOCAL(RTGCPTR, GCPtrEffDst); \
                    IEM_MC_CALC_RM_EFF_ADDR(GCPtrEffDst, a_bRm, 0); \
                    IEMOP_HLP_DONE_DECODING(); \
                    IEM_MC_NATIVE_IF(a_fNativeArchs) { \
                        IEM_MC_LOCAL(uint16_t,      u16Dst); \
                        IEM_MC_FETCH_MEM_U16(u16Dst, pVCpu->iem.s.iEffSeg, GCPtrEffDst); \
                        IEM_MC_LOCAL(uint16_t,      u16SrcEmit); \
                        IEM_MC_FETCH_GREG_U16(u16SrcEmit, IEM_GET_MODRM_REG(pVCpu, a_bRm)); \
                        IEM_MC_LOCAL_EFLAGS(uEFlags); \
                        IEM_MC_NATIVE_EMIT_4(RT_CONCAT3(iemNativeEmit_,a_InsNm,_r_r_efl), u16Dst, u16SrcEmit, uEFlags, 16); \
                        IEM_MC_COMMIT_EFLAGS_OPT(uEFlags); \
                    } IEM_MC_NATIVE_ELSE() { \
                        IEM_MC_LOCAL(uint8_t,         bUnmapInfo); \
                        IEM_MC_ARG(uint16_t const *,  pu16Dst,      1); \
                        IEM_MC_MEM_MAP_U16_RO(pu16Dst, bUnmapInfo, pVCpu->iem.s.iEffSeg, GCPtrEffDst); \
                        IEM_MC_ARG(uint16_t,          u16Src,       2); \
                        IEM_MC_FETCH_GREG_U16(u16Src, IEM_GET_MODRM_REG(pVCpu, a_bRm)); \
                        IEM_MC_ARG_EFLAGS(            fEFlagsIn,    0); \
                        IEM_MC_CALL_AIMPL_3(uint32_t, fEFlagsRet, RT_CONCAT3(iemAImpl_,a_InsNm,_u16), fEFlagsIn, pu16Dst, u16Src); \
                        IEM_MC_MEM_COMMIT_AND_UNMAP_RO(bUnmapInfo); \
                        IEM_MC_COMMIT_EFLAGS(fEFlagsRet); \
                    } IEM_MC_NATIVE_ENDIF(); \
                    IEM_MC_ADVANCE_RIP_AND_FINISH(); \
                    IEM_MC_END(); \
                    break; \
                \
                case IEMMODE_32BIT: \
                    IEM_MC_BEGIN(IEM_MC_F_MIN_386, 0); \
                    IEM_MC_LOCAL(RTGCPTR, GCPtrEffDst); \
                    IEM_MC_CALC_RM_EFF_ADDR(GCPtrEffDst, a_bRm, 0); \
                    IEMOP_HLP_DONE_DECODING(); \
                    IEM_MC_NATIVE_IF(a_fNativeArchs) { \
                        IEM_MC_LOCAL(uint32_t,      u32Dst); \
                        IEM_MC_FETCH_MEM_U32(u32Dst, pVCpu->iem.s.iEffSeg, GCPtrEffDst); \
                        IEM_MC_LOCAL(uint32_t,      u32SrcEmit); \
                        IEM_MC_FETCH_GREG_U32(u32SrcEmit, IEM_GET_MODRM_REG(pVCpu, a_bRm)); \
                        IEM_MC_LOCAL_EFLAGS(uEFlags); \
                        IEM_MC_NATIVE_EMIT_4(RT_CONCAT3(iemNativeEmit_,a_InsNm,_r_r_efl), u32Dst, u32SrcEmit, uEFlags, 32); \
                        IEM_MC_COMMIT_EFLAGS_OPT(uEFlags); \
                    } IEM_MC_NATIVE_ELSE() { \
                        IEM_MC_LOCAL(uint8_t,         bUnmapInfo); \
                        IEM_MC_ARG(uint32_t const *,  pu32Dst,      1); \
                        IEM_MC_MEM_MAP_U32_RO(pu32Dst, bUnmapInfo, pVCpu->iem.s.iEffSeg, GCPtrEffDst); \
                        IEM_MC_ARG(uint32_t,          u32Src,       2); \
                        IEM_MC_FETCH_GREG_U32(u32Src, IEM_GET_MODRM_REG(pVCpu, a_bRm)); \
                        IEM_MC_ARG_EFLAGS(            fEFlagsIn,    0); \
                        IEM_MC_CALL_AIMPL_3(uint32_t, fEFlagsRet, RT_CONCAT3(iemAImpl_,a_InsNm,_u32), fEFlagsIn, pu32Dst, u32Src); \
                        IEM_MC_MEM_COMMIT_AND_UNMAP_RO(bUnmapInfo); \
                        IEM_MC_COMMIT_EFLAGS(fEFlagsRet); \
                    } IEM_MC_NATIVE_ENDIF(); \
                    IEM_MC_ADVANCE_RIP_AND_FINISH(); \
                    IEM_MC_END(); \
                    break; \
                \
                case IEMMODE_64BIT: \
                    IEM_MC_BEGIN(IEM_MC_F_64BIT, 0); \
                    IEM_MC_LOCAL(RTGCPTR, GCPtrEffDst); \
                    IEM_MC_CALC_RM_EFF_ADDR(GCPtrEffDst, a_bRm, 0); \
                    IEMOP_HLP_DONE_DECODING(); \
                    IEM_MC_NATIVE_IF(a_fNativeArchs) { \
                        IEM_MC_LOCAL(uint64_t,      u64Dst); \
                        IEM_MC_FETCH_MEM_U64(u64Dst, pVCpu->iem.s.iEffSeg, GCPtrEffDst); \
                        IEM_MC_LOCAL(uint64_t,      u64SrcEmit); \
                        IEM_MC_FETCH_GREG_U64(u64SrcEmit, IEM_GET_MODRM_REG(pVCpu, a_bRm)); \
                        IEM_MC_LOCAL_EFLAGS(uEFlags); \
                        IEM_MC_NATIVE_EMIT_4(RT_CONCAT3(iemNativeEmit_,a_InsNm,_r_r_efl), u64Dst, u64SrcEmit, uEFlags, 64); \
                        IEM_MC_COMMIT_EFLAGS_OPT(uEFlags); \
                    } IEM_MC_NATIVE_ELSE() { \
                        IEM_MC_LOCAL(uint8_t,         bUnmapInfo); \
                        IEM_MC_ARG(uint64_t const *,  pu64Dst,      1); \
                        IEM_MC_MEM_MAP_U64_RO(pu64Dst, bUnmapInfo, pVCpu->iem.s.iEffSeg, GCPtrEffDst); \
                        IEM_MC_ARG(uint64_t,          u64Src,       2); \
                        IEM_MC_FETCH_GREG_U64(u64Src, IEM_GET_MODRM_REG(pVCpu, a_bRm)); \
                        IEM_MC_ARG_EFLAGS(            fEFlagsIn,    0); \
                        IEM_MC_CALL_AIMPL_3(uint32_t, fEFlagsRet, RT_CONCAT3(iemAImpl_,a_InsNm,_u64), fEFlagsIn, pu64Dst, u64Src); \
                        IEM_MC_MEM_COMMIT_AND_UNMAP_RO(bUnmapInfo); \
                        IEM_MC_COMMIT_EFLAGS(fEFlagsRet); \
                    } IEM_MC_NATIVE_ENDIF(); \
                    IEM_MC_ADVANCE_RIP_AND_FINISH(); \
                    IEM_MC_END(); \
                    break; \
                \
                IEM_NOT_REACHED_DEFAULT_CASE_RET(); \
            } \
        } \
        else \
        { \
            IEMOP_HLP_DONE_DECODING(); \
            IEMOP_RAISE_INVALID_LOCK_PREFIX_RET(); \
        } \
    } \
    (void)0


/**
 * Body for instructions like ADD, AND, OR, ++ with working on AL with
 * a byte immediate.
 */
#define IEMOP_BODY_BINARY_AL_Ib(a_InsNm, a_fNativeArchs) \
    IEM_MC_BEGIN(0, 0); \
    uint8_t u8Imm; IEM_OPCODE_GET_NEXT_U8(&u8Imm); \
    IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX(); \
    IEM_MC_NATIVE_IF(a_fNativeArchs) { \
        IEM_MC_LOCAL(uint8_t,       u8Dst); \
        IEM_MC_FETCH_GREG_U8(u8Dst, X86_GREG_xAX); \
        IEM_MC_LOCAL(uint32_t,      uEFlags); \
        IEM_MC_FETCH_EFLAGS(uEFlags); \
        IEM_MC_NATIVE_EMIT_5(RT_CONCAT3(iemNativeEmit_,a_InsNm,_r_i_efl), u8Dst, u8Imm, uEFlags, 8, 8); \
        IEM_MC_STORE_GREG_U8(X86_GREG_xAX, u8Dst); \
        IEM_MC_COMMIT_EFLAGS_OPT(uEFlags); \
    } IEM_MC_NATIVE_ELSE() { \
        IEM_MC_ARG(uint8_t *,       pu8Dst,             1); \
        IEM_MC_REF_GREG_U8(pu8Dst, X86_GREG_xAX); \
        IEM_MC_ARG_EFLAGS(          fEFlagsIn,          0); \
        IEM_MC_ARG_CONST(uint8_t,   u8Src,/*=*/ u8Imm,  2); \
        IEM_MC_CALL_AIMPL_3(uint32_t, fEFlagsRet, RT_CONCAT3(iemAImpl_,a_InsNm,_u8), fEFlagsIn, pu8Dst, u8Src); \
        IEM_MC_COMMIT_EFLAGS(fEFlagsRet); \
    } IEM_MC_NATIVE_ENDIF(); \
    IEM_MC_ADVANCE_RIP_AND_FINISH();  \
    IEM_MC_END()

/**
 * Body for instructions like ADD, AND, OR, ++ with working on
 * AX/EAX/RAX with a word/dword immediate.
 */
#define IEMOP_BODY_BINARY_rAX_Iz_RW(a_InsNm, a_fNativeArchs) \
    switch (pVCpu->iem.s.enmEffOpSize) \
    { \
        case IEMMODE_16BIT: \
        { \
            IEM_MC_BEGIN(0, 0); \
            uint16_t u16Imm; IEM_OPCODE_GET_NEXT_U16(&u16Imm); \
            IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX(); \
            IEM_MC_NATIVE_IF(a_fNativeArchs) { \
                IEM_MC_LOCAL(uint16_t,       u16Dst); \
                IEM_MC_FETCH_GREG_U16(u16Dst, X86_GREG_xAX); \
                IEM_MC_LOCAL(uint32_t,      uEFlags); \
                IEM_MC_FETCH_EFLAGS(uEFlags); \
                IEM_MC_NATIVE_EMIT_5(RT_CONCAT3(iemNativeEmit_,a_InsNm,_r_i_efl), u16Dst, u16Imm, uEFlags, 16, 16); \
                IEM_MC_STORE_GREG_U16(X86_GREG_xAX, u16Dst); \
                IEM_MC_COMMIT_EFLAGS_OPT(uEFlags); \
            } IEM_MC_NATIVE_ELSE() { \
                IEM_MC_ARG_CONST(uint16_t,  u16Src,/*=*/ u16Imm,    2); \
                IEM_MC_ARG(uint16_t *,      pu16Dst,                1); \
                IEM_MC_REF_GREG_U16(pu16Dst, X86_GREG_xAX); \
                IEM_MC_ARG_EFLAGS(          fEFlagsIn,              0); \
                IEM_MC_CALL_AIMPL_3(uint32_t, fEFlagsRet, RT_CONCAT3(iemAImpl_,a_InsNm,_u16), fEFlagsIn, pu16Dst, u16Src); \
                IEM_MC_COMMIT_EFLAGS(fEFlagsRet); \
            } IEM_MC_NATIVE_ENDIF(); \
            IEM_MC_ADVANCE_RIP_AND_FINISH(); \
            IEM_MC_END(); \
        } \
        \
        case IEMMODE_32BIT: \
        { \
            IEM_MC_BEGIN(IEM_MC_F_MIN_386, 0); \
            uint32_t u32Imm; IEM_OPCODE_GET_NEXT_U32(&u32Imm); \
            IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX(); \
            IEM_MC_NATIVE_IF(a_fNativeArchs) { \
                IEM_MC_LOCAL(uint32_t,      u32Dst); \
                IEM_MC_FETCH_GREG_U32(u32Dst, X86_GREG_xAX); \
                IEM_MC_LOCAL(uint32_t,      uEFlags); \
                IEM_MC_FETCH_EFLAGS(uEFlags); \
                IEM_MC_NATIVE_EMIT_5(RT_CONCAT3(iemNativeEmit_,a_InsNm,_r_i_efl), u32Dst, u32Imm, uEFlags, 32, 32); \
                IEM_MC_STORE_GREG_U32(X86_GREG_xAX, u32Dst); \
                IEM_MC_COMMIT_EFLAGS_OPT(uEFlags); \
            } IEM_MC_NATIVE_ELSE() { \
                IEM_MC_ARG_CONST(uint32_t,  u32Src,/*=*/ u32Imm,    2); \
                IEM_MC_ARG(uint32_t *,      pu32Dst,                1); \
                IEM_MC_REF_GREG_U32(pu32Dst, X86_GREG_xAX); \
                IEM_MC_ARG_EFLAGS(          fEFlagsIn,              0); \
                IEM_MC_CALL_AIMPL_3(uint32_t, fEFlagsRet, RT_CONCAT3(iemAImpl_,a_InsNm,_u32), fEFlagsIn, pu32Dst, u32Src); \
                IEM_MC_CLEAR_HIGH_GREG_U64(X86_GREG_xAX); \
                IEM_MC_COMMIT_EFLAGS(fEFlagsRet); \
            } IEM_MC_NATIVE_ENDIF(); \
            IEM_MC_ADVANCE_RIP_AND_FINISH(); \
            IEM_MC_END(); \
        } \
        \
        case IEMMODE_64BIT: \
        { \
            IEM_MC_BEGIN(IEM_MC_F_64BIT, 0); \
            uint64_t u64Imm; IEM_OPCODE_GET_NEXT_S32_SX_U64(&u64Imm); \
            IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX(); \
            IEM_MC_NATIVE_IF(a_fNativeArchs) { \
                IEM_MC_LOCAL(uint64_t,       u64Dst); \
                IEM_MC_FETCH_GREG_U64(u64Dst, X86_GREG_xAX); \
                IEM_MC_LOCAL(uint32_t,      uEFlags); \
                IEM_MC_FETCH_EFLAGS(uEFlags); \
                IEM_MC_NATIVE_EMIT_5(RT_CONCAT3(iemNativeEmit_,a_InsNm,_r_i_efl), u64Dst, u64Imm, uEFlags, 64, 32); \
                IEM_MC_STORE_GREG_U64(X86_GREG_xAX, u64Dst); \
                IEM_MC_COMMIT_EFLAGS_OPT(uEFlags); \
            } IEM_MC_NATIVE_ELSE() { \
                IEM_MC_ARG_CONST(uint64_t,  u64Src,/*=*/ u64Imm,    2); \
                IEM_MC_ARG(uint64_t *,      pu64Dst,                1); \
                IEM_MC_REF_GREG_U64(pu64Dst, X86_GREG_xAX); \
                IEM_MC_ARG_EFLAGS(          fEFlagsIn,              0); \
                IEM_MC_CALL_AIMPL_3(uint32_t, fEFlagsRet, RT_CONCAT3(iemAImpl_,a_InsNm,_u64), fEFlagsIn, pu64Dst, u64Src); \
                IEM_MC_COMMIT_EFLAGS(fEFlagsRet); \
            } IEM_MC_NATIVE_ENDIF(); \
            IEM_MC_ADVANCE_RIP_AND_FINISH(); \
            IEM_MC_END(); \
        } \
        \
        IEM_NOT_REACHED_DEFAULT_CASE_RET(); \
    } \
    (void)0

/**
 * Body for the instructions CMP and TEST working on AX/EAX/RAX with a
 * word/dword immediate.
 */
#define IEMOP_BODY_BINARY_rAX_Iz_RO(a_InsNm, a_fNativeArchs) \
    switch (pVCpu->iem.s.enmEffOpSize) \
    { \
        case IEMMODE_16BIT: \
        { \
            IEM_MC_BEGIN(0, 0); \
            uint16_t u16Imm; IEM_OPCODE_GET_NEXT_U16(&u16Imm); \
            IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX(); \
            IEM_MC_NATIVE_IF(a_fNativeArchs) { \
                IEM_MC_LOCAL(uint16_t,       u16Dst); \
                IEM_MC_FETCH_GREG_U16(u16Dst, X86_GREG_xAX); \
                IEM_MC_LOCAL(uint32_t,      uEFlags); \
                IEM_MC_FETCH_EFLAGS(uEFlags); \
                IEM_MC_NATIVE_EMIT_5(RT_CONCAT3(iemNativeEmit_,a_InsNm,_r_i_efl), u16Dst, u16Imm, uEFlags, 16, 16); \
                IEM_MC_COMMIT_EFLAGS_OPT(uEFlags); \
            } IEM_MC_NATIVE_ELSE() { \
                IEM_MC_ARG_CONST(uint16_t,  u16Src,/*=*/ u16Imm,    2); \
                IEM_MC_ARG(uint16_t const *,pu16Dst,                1); \
                IEM_MC_REF_GREG_U16_CONST(pu16Dst, X86_GREG_xAX); \
                IEM_MC_ARG_EFLAGS(          fEFlagsIn,              0); \
                IEM_MC_CALL_AIMPL_3(uint32_t, fEFlagsRet, RT_CONCAT3(iemAImpl_,a_InsNm,_u16), fEFlagsIn, pu16Dst, u16Src); \
                IEM_MC_COMMIT_EFLAGS(fEFlagsRet); \
            } IEM_MC_NATIVE_ENDIF(); \
            IEM_MC_ADVANCE_RIP_AND_FINISH(); \
            IEM_MC_END(); \
        } \
        \
        case IEMMODE_32BIT: \
        { \
            IEM_MC_BEGIN(IEM_MC_F_MIN_386, 0); \
            uint32_t u32Imm; IEM_OPCODE_GET_NEXT_U32(&u32Imm); \
            IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX(); \
            IEM_MC_NATIVE_IF(a_fNativeArchs) { \
                IEM_MC_LOCAL(uint32_t,      u32Dst); \
                IEM_MC_FETCH_GREG_U32(u32Dst, X86_GREG_xAX); \
                IEM_MC_LOCAL(uint32_t,      uEFlags); \
                IEM_MC_FETCH_EFLAGS(uEFlags); \
                IEM_MC_NATIVE_EMIT_5(RT_CONCAT3(iemNativeEmit_,a_InsNm,_r_i_efl), u32Dst, u32Imm, uEFlags, 32, 32); \
                IEM_MC_COMMIT_EFLAGS_OPT(uEFlags); \
            } IEM_MC_NATIVE_ELSE() { \
                IEM_MC_ARG_CONST(uint32_t,  u32Src,/*=*/ u32Imm,    2); \
                IEM_MC_ARG(uint32_t const *,pu32Dst,                1); \
                IEM_MC_REF_GREG_U32_CONST(pu32Dst, X86_GREG_xAX); \
                IEM_MC_ARG_EFLAGS(          fEFlagsIn,              0); \
                IEM_MC_CALL_AIMPL_3(uint32_t, fEFlagsRet, RT_CONCAT3(iemAImpl_,a_InsNm,_u32), fEFlagsIn, pu32Dst, u32Src); \
                IEM_MC_COMMIT_EFLAGS(fEFlagsRet); \
            } IEM_MC_NATIVE_ENDIF(); \
            IEM_MC_ADVANCE_RIP_AND_FINISH(); \
            IEM_MC_END(); \
        } \
        \
        case IEMMODE_64BIT: \
        { \
            IEM_MC_BEGIN(IEM_MC_F_64BIT, 0); \
            uint64_t u64Imm; IEM_OPCODE_GET_NEXT_S32_SX_U64(&u64Imm); \
            IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX(); \
            IEM_MC_NATIVE_IF(a_fNativeArchs) { \
                IEM_MC_LOCAL(uint64_t,       u64Dst); \
                IEM_MC_FETCH_GREG_U64(u64Dst, X86_GREG_xAX); \
                IEM_MC_LOCAL(uint32_t,      uEFlags); \
                IEM_MC_FETCH_EFLAGS(uEFlags); \
                IEM_MC_NATIVE_EMIT_5(RT_CONCAT3(iemNativeEmit_,a_InsNm,_r_i_efl), u64Dst, u64Imm, uEFlags, 64, 32); \
                IEM_MC_COMMIT_EFLAGS_OPT(uEFlags); \
            } IEM_MC_NATIVE_ELSE() { \
                IEM_MC_ARG_CONST(uint64_t,  u64Src,/*=*/ u64Imm,    2); \
                IEM_MC_ARG(uint64_t const *,pu64Dst,                1); \
                IEM_MC_REF_GREG_U64_CONST(pu64Dst, X86_GREG_xAX); \
                IEM_MC_ARG_EFLAGS(          fEFlagsIn,              0); \
                IEM_MC_CALL_AIMPL_3(uint32_t, fEFlagsRet, RT_CONCAT3(iemAImpl_,a_InsNm,_u64), fEFlagsIn, pu64Dst, u64Src); \
                IEM_MC_COMMIT_EFLAGS(fEFlagsRet); \
            } IEM_MC_NATIVE_ENDIF(); \
            IEM_MC_ADVANCE_RIP_AND_FINISH(); \
            IEM_MC_END(); \
        } \
        \
        IEM_NOT_REACHED_DEFAULT_CASE_RET(); \
    } \
    (void)0



/* Instruction specification format - work in progress:  */

/**
 * @opcode      0x00
 * @opmnemonic  add
 * @op1         rm:Eb
 * @op2         reg:Gb
 * @opmaps      one
 * @openc       ModR/M
 * @opflclass   arithmetic
 * @ophints     harmless ignores_op_sizes
 * @opstats     add_Eb_Gb
 * @opgroup     og_gen_arith_bin
 * @optest              op1=1   op2=1   -> op1=2   efl&|=nc,pe,na,nz,pl,nv
 * @optest      efl|=cf op1=1   op2=2   -> op1=3   efl&|=nc,po,na,nz,pl,nv
 * @optest              op1=254 op2=1   -> op1=255 efl&|=nc,po,na,nz,ng,nv
 * @optest              op1=128 op2=128 -> op1=0   efl&|=ov,pl,zf,na,po,cf
 */
FNIEMOP_DEF(iemOp_add_Eb_Gb)
{
    IEMOP_MNEMONIC2(MR, ADD, add, Eb, Gb, DISOPTYPE_HARMLESS, IEMOPHINT_IGNORES_OP_SIZES | IEMOPHINT_LOCK_ALLOWED);
    uint8_t bRm; IEM_OPCODE_GET_NEXT_U8(&bRm);
    IEMOP_BODY_BINARY_rm_r8_RW(bRm, add, RT_ARCH_VAL_AMD64 | RT_ARCH_VAL_ARM64, 0);
}


/**
 * @opcode      0x01
 * @opgroup     og_gen_arith_bin
 * @opflclass   arithmetic
 * @optest               op1=1  op2=1  -> op1=2  efl&|=nc,pe,na,nz,pl,nv
 * @optest      efl|=cf  op1=2  op2=2  -> op1=4  efl&|=nc,pe,na,nz,pl,nv
 * @optest      efl&~=cf op1=-1 op2=1  -> op1=0  efl&|=cf,po,af,zf,pl,nv
 * @optest               op1=-1 op2=-1 -> op1=-2 efl&|=cf,pe,af,nz,ng,nv
 */
FNIEMOP_DEF(iemOp_add_Ev_Gv)
{
    IEMOP_MNEMONIC2(MR, ADD, add, Ev, Gv, DISOPTYPE_HARMLESS, IEMOPHINT_LOCK_ALLOWED);
    uint8_t bRm; IEM_OPCODE_GET_NEXT_U8(&bRm);
    IEMOP_BODY_BINARY_rm_rv_RW(    bRm, add, RT_ARCH_VAL_AMD64 | RT_ARCH_VAL_ARM64, 0);
    IEMOP_BODY_BINARY_rm_rv_LOCKED(bRm, add);
}


/**
 * @opcode      0x02
 * @opgroup     og_gen_arith_bin
 * @opflclass   arithmetic
 * @opcopytests iemOp_add_Eb_Gb
 */
FNIEMOP_DEF(iemOp_add_Gb_Eb)
{
    IEMOP_MNEMONIC2(RM, ADD, add, Gb, Eb, DISOPTYPE_HARMLESS, IEMOPHINT_IGNORES_OP_SIZES);
    uint8_t bRm; IEM_OPCODE_GET_NEXT_U8(&bRm);
    IEMOP_BODY_BINARY_r8_rm(bRm, add, RT_ARCH_VAL_AMD64 | RT_ARCH_VAL_ARM64);
}


/**
 * @opcode      0x03
 * @opgroup     og_gen_arith_bin
 * @opflclass   arithmetic
 * @opcopytests iemOp_add_Ev_Gv
 */
FNIEMOP_DEF(iemOp_add_Gv_Ev)
{
    IEMOP_MNEMONIC2(RM, ADD, add, Gv, Ev, DISOPTYPE_HARMLESS, 0);
    uint8_t bRm; IEM_OPCODE_GET_NEXT_U8(&bRm);
    IEMOP_BODY_BINARY_rv_rm(bRm, iemAImpl_add_u16, iemAImpl_add_u32, iemAImpl_add_u64, 0, add, RT_ARCH_VAL_AMD64 | RT_ARCH_VAL_ARM64);
}


/**
 * @opcode      0x04
 * @opgroup     og_gen_arith_bin
 * @opflclass   arithmetic
 * @opcopytests iemOp_add_Eb_Gb
 */
FNIEMOP_DEF(iemOp_add_Al_Ib)
{
    IEMOP_MNEMONIC2(FIXED, ADD, add, AL, Ib, DISOPTYPE_HARMLESS, IEMOPHINT_IGNORES_OP_SIZES);
    IEMOP_BODY_BINARY_AL_Ib(add, RT_ARCH_VAL_AMD64 | RT_ARCH_VAL_ARM64);
}


/**
 * @opcode      0x05
 * @opgroup     og_gen_arith_bin
 * @opflclass   arithmetic
 * @optest      op1=1 op2=1 -> op1=2 efl&|=nv,pl,nz,na,pe
 * @optest      efl|=cf  op1=2  op2=2  -> op1=4  efl&|=nc,pe,na,nz,pl,nv
 * @optest      efl&~=cf op1=-1 op2=1  -> op1=0  efl&|=cf,po,af,zf,pl,nv
 * @optest               op1=-1 op2=-1 -> op1=-2 efl&|=cf,pe,af,nz,ng,nv
 */
FNIEMOP_DEF(iemOp_add_eAX_Iz)
{
    IEMOP_MNEMONIC2(FIXED, ADD, add, rAX, Iz, DISOPTYPE_HARMLESS, 0);
    IEMOP_BODY_BINARY_rAX_Iz_RW(add, RT_ARCH_VAL_AMD64 | RT_ARCH_VAL_ARM64);
}


/**
 * @opcode      0x06
 * @opgroup     og_stack_sreg
 */
FNIEMOP_DEF(iemOp_push_ES)
{
    IEMOP_MNEMONIC1(FIXED, PUSH, push, ES, DISOPTYPE_HARMLESS | DISOPTYPE_X86_INVALID_64, 0);
    IEMOP_HLP_NO_64BIT();
    return FNIEMOP_CALL_1(iemOpCommonPushSReg, X86_SREG_ES);
}


/**
 * @opcode      0x07
 * @opgroup     og_stack_sreg
 */
FNIEMOP_DEF(iemOp_pop_ES)
{
    IEMOP_MNEMONIC1(FIXED, POP, pop, ES, DISOPTYPE_HARMLESS | DISOPTYPE_X86_INVALID_64, 0);
    IEMOP_HLP_NO_64BIT();
    IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
    IEM_MC_DEFER_TO_CIMPL_2_RET(IEM_CIMPL_F_MODE,
                                  RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xSP)
                                | RT_BIT_64(kIemNativeGstReg_SegSelFirst    + X86_SREG_ES)
                                | RT_BIT_64(kIemNativeGstReg_SegBaseFirst   + X86_SREG_ES)
                                | RT_BIT_64(kIemNativeGstReg_SegLimitFirst  + X86_SREG_ES)
                                | RT_BIT_64(kIemNativeGstReg_SegAttribFirst + X86_SREG_ES),
                                iemCImpl_pop_Sreg, X86_SREG_ES, pVCpu->iem.s.enmEffOpSize);
}


/**
 * @opcode      0x08
 * @opgroup     og_gen_arith_bin
 * @opflclass   logical
 * @optest                  op1=7 op2=12 -> op1=15   efl&|=nc,po,na,nz,pl,nv
 * @optest      efl|=of,cf  op1=0 op2=0  -> op1=0    efl&|=nc,po,na,zf,pl,nv
 * @optest            op1=0xee op2=0x11  -> op1=0xff efl&|=nc,po,na,nz,ng,nv
 * @optest            op1=0xff op2=0xff  -> op1=0xff efl&|=nc,po,na,nz,ng,nv
 */
FNIEMOP_DEF(iemOp_or_Eb_Gb)
{
    IEMOP_MNEMONIC2(MR, OR, or, Eb, Gb, DISOPTYPE_HARMLESS, IEMOPHINT_IGNORES_OP_SIZES | IEMOPHINT_LOCK_ALLOWED);
    IEMOP_VERIFICATION_UNDEFINED_EFLAGS(X86_EFL_AF);
    uint8_t bRm; IEM_OPCODE_GET_NEXT_U8(&bRm);
    IEMOP_BODY_BINARY_rm_r8_RW(bRm, or, RT_ARCH_VAL_AMD64 | RT_ARCH_VAL_ARM64, 0);
}


/*
 * @opcode      0x09
 * @opgroup     og_gen_arith_bin
 * @opflclass   logical
 * @optest      efl|=of,cf  op1=12 op2=7 -> op1=15   efl&|=nc,po,na,nz,pl,nv
 * @optest      efl|=of,cf  op1=0 op2=0  -> op1=0    efl&|=nc,po,na,zf,pl,nv
 * @optest      op1=-2 op2=1  -> op1=-1 efl&|=nc,po,na,nz,ng,nv
 * @optest      o16 / op1=0x5a5a             op2=0xa5a5             -> op1=-1 efl&|=nc,po,na,nz,ng,nv
 * @optest      o32 / op1=0x5a5a5a5a         op2=0xa5a5a5a5         -> op1=-1 efl&|=nc,po,na,nz,ng,nv
 * @optest      o64 / op1=0x5a5a5a5a5a5a5a5a op2=0xa5a5a5a5a5a5a5a5 -> op1=-1 efl&|=nc,po,na,nz,ng,nv
 * @note        AF is documented as undefined, but both modern AMD and Intel CPUs clears it.
 */
FNIEMOP_DEF(iemOp_or_Ev_Gv)
{
    IEMOP_MNEMONIC2(MR, OR, or, Ev, Gv, DISOPTYPE_HARMLESS, IEMOPHINT_LOCK_ALLOWED);
    IEMOP_VERIFICATION_UNDEFINED_EFLAGS(X86_EFL_AF);
    uint8_t bRm; IEM_OPCODE_GET_NEXT_U8(&bRm);
    IEMOP_BODY_BINARY_rm_rv_RW(    bRm, or, RT_ARCH_VAL_AMD64 | RT_ARCH_VAL_ARM64, 0);
    IEMOP_BODY_BINARY_rm_rv_LOCKED(bRm, or);
}


/**
 * @opcode      0x0a
 * @opgroup     og_gen_arith_bin
 * @opflclass   logical
 * @opcopytests iemOp_or_Eb_Gb
 */
FNIEMOP_DEF(iemOp_or_Gb_Eb)
{
    IEMOP_MNEMONIC2(RM, OR, or, Gb, Eb, DISOPTYPE_HARMLESS, IEMOPHINT_IGNORES_OP_SIZES | IEMOPHINT_LOCK_ALLOWED);
    IEMOP_VERIFICATION_UNDEFINED_EFLAGS(X86_EFL_AF);
    uint8_t bRm; IEM_OPCODE_GET_NEXT_U8(&bRm);
    IEMOP_BODY_BINARY_r8_rm(bRm, or, RT_ARCH_VAL_AMD64 | RT_ARCH_VAL_ARM64);
}


/**
 * @opcode      0x0b
 * @opgroup     og_gen_arith_bin
 * @opflclass   logical
 * @opcopytests iemOp_or_Ev_Gv
 */
FNIEMOP_DEF(iemOp_or_Gv_Ev)
{
    IEMOP_MNEMONIC2(RM, OR, or, Gv, Ev, DISOPTYPE_HARMLESS, 0);
    IEMOP_VERIFICATION_UNDEFINED_EFLAGS(X86_EFL_AF);
    uint8_t bRm; IEM_OPCODE_GET_NEXT_U8(&bRm);
    IEMOP_BODY_BINARY_rv_rm(bRm, iemAImpl_or_u16, iemAImpl_or_u32, iemAImpl_or_u64, 0, or, RT_ARCH_VAL_AMD64 | RT_ARCH_VAL_ARM64);
}


/**
 * @opcode      0x0c
 * @opgroup     og_gen_arith_bin
 * @opflclass   logical
 * @opcopytests iemOp_or_Eb_Gb
 */
FNIEMOP_DEF(iemOp_or_Al_Ib)
{
    IEMOP_MNEMONIC2(FIXED, OR, or, AL, Ib, DISOPTYPE_HARMLESS, IEMOPHINT_IGNORES_OP_SIZES);
    IEMOP_VERIFICATION_UNDEFINED_EFLAGS(X86_EFL_AF);
    IEMOP_BODY_BINARY_AL_Ib(or, RT_ARCH_VAL_AMD64 | RT_ARCH_VAL_ARM64);
}


/**
 * @opcode      0x0d
 * @opgroup     og_gen_arith_bin
 * @opflclass   logical
 * @optest      efl|=of,cf  op1=12 op2=7 -> op1=15   efl&|=nc,po,na,nz,pl,nv
 * @optest      efl|=of,cf  op1=0 op2=0  -> op1=0    efl&|=nc,po,na,zf,pl,nv
 * @optest      op1=-2 op2=1  -> op1=-1 efl&|=nc,po,na,nz,ng,nv
 * @optest      o16 / op1=0x5a5a             op2=0xa5a5     -> op1=-1 efl&|=nc,po,na,nz,ng,nv
 * @optest      o32 / op1=0x5a5a5a5a         op2=0xa5a5a5a5 -> op1=-1 efl&|=nc,po,na,nz,ng,nv
 * @optest      o64 / op1=0x5a5a5a5a5a5a5a5a op2=0xa5a5a5a5 -> op1=-1 efl&|=nc,po,na,nz,ng,nv
 * @optest      o64 / op1=0x5a5a5a5aa5a5a5a5 op2=0x5a5a5a5a -> op1=0x5a5a5a5affffffff efl&|=nc,po,na,nz,pl,nv
 */
FNIEMOP_DEF(iemOp_or_eAX_Iz)
{
    IEMOP_MNEMONIC2(FIXED, OR, or, rAX, Iz, DISOPTYPE_HARMLESS, 0);
    IEMOP_VERIFICATION_UNDEFINED_EFLAGS(X86_EFL_AF);
    IEMOP_BODY_BINARY_rAX_Iz_RW(or, RT_ARCH_VAL_AMD64 | RT_ARCH_VAL_ARM64);
}


/**
 * @opcode      0x0e
 * @opgroup     og_stack_sreg
 */
FNIEMOP_DEF(iemOp_push_CS)
{
    IEMOP_MNEMONIC1(FIXED, PUSH, push, CS, DISOPTYPE_HARMLESS | DISOPTYPE_POTENTIALLY_DANGEROUS | DISOPTYPE_X86_INVALID_64, 0);
    IEMOP_HLP_NO_64BIT();
    return FNIEMOP_CALL_1(iemOpCommonPushSReg, X86_SREG_CS);
}


/**
 * @opcode      0x0f
 * @opmnemonic  EscTwo0f
 * @openc       two0f
 * @opdisenum   OP_2B_ESC
 * @ophints     harmless
 * @opgroup     og_escapes
 */
FNIEMOP_DEF(iemOp_2byteEscape)
{
#if 0 /// @todo def VBOX_STRICT
    /* Sanity check the table the first time around. */
    static bool s_fTested = false;
    if (RT_LIKELY(s_fTested)) { /* likely */  }
    else
    {
        s_fTested = true;
        Assert(g_apfnTwoByteMap[0xbc * 4 + 0] == iemOp_bsf_Gv_Ev);
        Assert(g_apfnTwoByteMap[0xbc * 4 + 1] == iemOp_bsf_Gv_Ev);
        Assert(g_apfnTwoByteMap[0xbc * 4 + 2] == iemOp_tzcnt_Gv_Ev);
        Assert(g_apfnTwoByteMap[0xbc * 4 + 3] == iemOp_bsf_Gv_Ev);
    }
#endif

    if (RT_LIKELY(IEM_GET_TARGET_CPU(pVCpu) >= IEMTARGETCPU_286))
    {
        uint8_t b; IEM_OPCODE_GET_NEXT_U8(&b);
        IEMOP_HLP_MIN_286();
        return FNIEMOP_CALL(g_apfnTwoByteMap[(uintptr_t)b * 4 + pVCpu->iem.s.idxPrefix]);
    }
    /* @opdone */

    /*
     * On the 8086 this is a POP CS instruction.
     * For the time being we don't specify this this.
     */
    IEMOP_MNEMONIC1(FIXED, POP, pop, CS, DISOPTYPE_HARMLESS | DISOPTYPE_POTENTIALLY_DANGEROUS | DISOPTYPE_X86_INVALID_64, IEMOPHINT_SKIP_PYTHON);
    IEMOP_HLP_NO_64BIT();
    IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
    /** @todo eliminate END_TB here */
    IEM_MC_DEFER_TO_CIMPL_2_RET(IEM_CIMPL_F_BRANCH_INDIRECT | IEM_CIMPL_F_BRANCH_FAR | IEM_CIMPL_F_END_TB,
                                  RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xSP)
                                | RT_BIT_64(kIemNativeGstReg_SegSelFirst + X86_SREG_CS),
                                iemCImpl_pop_Sreg, X86_SREG_CS, pVCpu->iem.s.enmEffOpSize);
}

/**
 * @opcode      0x10
 * @opgroup     og_gen_arith_bin
 * @opflclass   arithmetic_carry
 * @optest      op1=1 op2=1 efl&~=cf -> op1=2 efl&|=nc,pe,na,nz,pl,nv
 * @optest      op1=1 op2=1 efl|=cf  -> op1=3 efl&|=nc,po,na,nz,pl,nv
 * @optest      op1=0xff op2=0 efl|=cf -> op1=0 efl&|=cf,po,af,zf,pl,nv
 * @optest      op1=0  op2=0 efl|=cf -> op1=1 efl&|=nc,pe,na,nz,pl,nv
 * @optest      op1=0  op2=0 efl&~=cf -> op1=0 efl&|=nc,po,na,zf,pl,nv
 */
FNIEMOP_DEF(iemOp_adc_Eb_Gb)
{
    IEMOP_MNEMONIC2(MR, ADC, adc, Eb, Gb, DISOPTYPE_HARMLESS, IEMOPHINT_IGNORES_OP_SIZES | IEMOPHINT_LOCK_ALLOWED);
    uint8_t bRm; IEM_OPCODE_GET_NEXT_U8(&bRm);
    IEMOP_BODY_BINARY_rm_r8_RW(bRm, adc, RT_ARCH_VAL_AMD64 | RT_ARCH_VAL_ARM64, 0);
}


/**
 * @opcode      0x11
 * @opgroup     og_gen_arith_bin
 * @opflclass   arithmetic_carry
 * @optest      op1=1 op2=1 efl&~=cf -> op1=2 efl&|=nc,pe,na,nz,pl,nv
 * @optest      op1=1 op2=1 efl|=cf  -> op1=3 efl&|=nc,po,na,nz,pl,nv
 * @optest      op1=-1 op2=0 efl|=cf -> op1=0 efl&|=cf,po,af,zf,pl,nv
 * @optest      op1=0  op2=0 efl|=cf -> op1=1 efl&|=nc,pe,na,nz,pl,nv
 * @optest      op1=0  op2=0 efl&~=cf -> op1=0 efl&|=nc,po,na,zf,pl,nv
 */
FNIEMOP_DEF(iemOp_adc_Ev_Gv)
{
    IEMOP_MNEMONIC2(MR, ADC, adc, Ev, Gv, DISOPTYPE_HARMLESS, IEMOPHINT_LOCK_ALLOWED);
    uint8_t bRm; IEM_OPCODE_GET_NEXT_U8(&bRm);
    IEMOP_BODY_BINARY_rm_rv_RW(    bRm, adc, RT_ARCH_VAL_AMD64 | RT_ARCH_VAL_ARM64, 0);
    IEMOP_BODY_BINARY_rm_rv_LOCKED(bRm, adc);
}


/**
 * @opcode      0x12
 * @opgroup     og_gen_arith_bin
 * @opflclass   arithmetic_carry
 * @opcopytests iemOp_adc_Eb_Gb
 */
FNIEMOP_DEF(iemOp_adc_Gb_Eb)
{
    IEMOP_MNEMONIC2(RM, ADC, adc, Gb, Eb, DISOPTYPE_HARMLESS, IEMOPHINT_IGNORES_OP_SIZES);
    uint8_t bRm; IEM_OPCODE_GET_NEXT_U8(&bRm);
    IEMOP_BODY_BINARY_r8_rm(bRm, adc, RT_ARCH_VAL_AMD64 | RT_ARCH_VAL_ARM64);
}


/**
 * @opcode      0x13
 * @opgroup     og_gen_arith_bin
 * @opflclass   arithmetic_carry
 * @opcopytests iemOp_adc_Ev_Gv
 */
FNIEMOP_DEF(iemOp_adc_Gv_Ev)
{
    IEMOP_MNEMONIC2(RM, ADC, adc, Gv, Ev, DISOPTYPE_HARMLESS, 0);
    uint8_t bRm; IEM_OPCODE_GET_NEXT_U8(&bRm);
    IEMOP_BODY_BINARY_rv_rm(bRm, iemAImpl_adc_u16, iemAImpl_adc_u32, iemAImpl_adc_u64, 0, adc, RT_ARCH_VAL_AMD64 | RT_ARCH_VAL_ARM64);
}


/**
 * @opcode      0x14
 * @opgroup     og_gen_arith_bin
 * @opflclass   arithmetic_carry
 * @opcopytests iemOp_adc_Eb_Gb
 */
FNIEMOP_DEF(iemOp_adc_Al_Ib)
{
    IEMOP_MNEMONIC2(FIXED, ADC, adc, AL, Ib, DISOPTYPE_HARMLESS, IEMOPHINT_IGNORES_OP_SIZES);
    IEMOP_BODY_BINARY_AL_Ib(adc, RT_ARCH_VAL_AMD64 | RT_ARCH_VAL_ARM64);
}


/**
 * @opcode      0x15
 * @opgroup     og_gen_arith_bin
 * @opflclass   arithmetic_carry
 * @opcopytests iemOp_adc_Ev_Gv
 */
FNIEMOP_DEF(iemOp_adc_eAX_Iz)
{
    IEMOP_MNEMONIC2(FIXED, ADC, adc, rAX, Iz, DISOPTYPE_HARMLESS, 0);
    IEMOP_BODY_BINARY_rAX_Iz_RW(adc, RT_ARCH_VAL_AMD64 | RT_ARCH_VAL_ARM64);
}


/**
 * @opcode      0x16
 */
FNIEMOP_DEF(iemOp_push_SS)
{
    IEMOP_MNEMONIC1(FIXED, PUSH, push, SS, DISOPTYPE_HARMLESS | DISOPTYPE_X86_INVALID_64 | DISOPTYPE_RRM_DANGEROUS, 0);
    IEMOP_HLP_NO_64BIT();
    return FNIEMOP_CALL_1(iemOpCommonPushSReg, X86_SREG_SS);
}


/**
 * @opcode      0x17
 */
FNIEMOP_DEF(iemOp_pop_SS)
{
    IEMOP_MNEMONIC1(FIXED, POP, pop, SS, DISOPTYPE_HARMLESS | DISOPTYPE_INHIBIT_IRQS | DISOPTYPE_X86_INVALID_64 | DISOPTYPE_RRM_DANGEROUS , 0);
    IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
    IEMOP_HLP_NO_64BIT();
    IEM_MC_DEFER_TO_CIMPL_2_RET(IEM_CIMPL_F_MODE | IEM_CIMPL_F_INHIBIT_SHADOW,
                                  RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xSP)
                                | RT_BIT_64(kIemNativeGstReg_SegSelFirst    + X86_SREG_SS)
                                | RT_BIT_64(kIemNativeGstReg_SegBaseFirst   + X86_SREG_SS)
                                | RT_BIT_64(kIemNativeGstReg_SegLimitFirst  + X86_SREG_SS)
                                | RT_BIT_64(kIemNativeGstReg_SegAttribFirst + X86_SREG_SS),
                                iemCImpl_pop_Sreg, X86_SREG_SS, pVCpu->iem.s.enmEffOpSize);
}


/**
 * @opcode      0x18
 * @opgroup     og_gen_arith_bin
 * @opflclass   arithmetic_carry
 */
FNIEMOP_DEF(iemOp_sbb_Eb_Gb)
{
    IEMOP_MNEMONIC2(MR, SBB, sbb, Eb, Gb, DISOPTYPE_HARMLESS, IEMOPHINT_IGNORES_OP_SIZES | IEMOPHINT_LOCK_ALLOWED);
    uint8_t bRm; IEM_OPCODE_GET_NEXT_U8(&bRm);
    IEMOP_BODY_BINARY_rm_r8_RW(bRm, sbb, RT_ARCH_VAL_AMD64 | RT_ARCH_VAL_ARM64, 0);
}


/**
 * @opcode      0x19
 * @opgroup     og_gen_arith_bin
 * @opflclass   arithmetic_carry
 */
FNIEMOP_DEF(iemOp_sbb_Ev_Gv)
{
    IEMOP_MNEMONIC2(MR, SBB, sbb, Ev, Gv, DISOPTYPE_HARMLESS, IEMOPHINT_LOCK_ALLOWED);
    uint8_t bRm; IEM_OPCODE_GET_NEXT_U8(&bRm);
    IEMOP_BODY_BINARY_rm_rv_RW(    bRm, sbb, RT_ARCH_VAL_AMD64 | RT_ARCH_VAL_ARM64, 0);
    IEMOP_BODY_BINARY_rm_rv_LOCKED(bRm, sbb);
}


/**
 * @opcode      0x1a
 * @opgroup     og_gen_arith_bin
 * @opflclass   arithmetic_carry
 */
FNIEMOP_DEF(iemOp_sbb_Gb_Eb)
{
    IEMOP_MNEMONIC2(RM, SBB, sbb, Gb, Eb, DISOPTYPE_HARMLESS, IEMOPHINT_IGNORES_OP_SIZES);
    uint8_t bRm; IEM_OPCODE_GET_NEXT_U8(&bRm);
    IEMOP_BODY_BINARY_r8_rm(bRm, sbb, RT_ARCH_VAL_AMD64 | RT_ARCH_VAL_ARM64);
}


/**
 * @opcode      0x1b
 * @opgroup     og_gen_arith_bin
 * @opflclass   arithmetic_carry
 */
FNIEMOP_DEF(iemOp_sbb_Gv_Ev)
{
    IEMOP_MNEMONIC2(RM, SBB, sbb, Gv, Ev, DISOPTYPE_HARMLESS, 0);
    uint8_t bRm; IEM_OPCODE_GET_NEXT_U8(&bRm);
    IEMOP_BODY_BINARY_rv_rm(bRm, iemAImpl_sbb_u16, iemAImpl_sbb_u32, iemAImpl_sbb_u64, 0, sbb, RT_ARCH_VAL_AMD64 | RT_ARCH_VAL_ARM64);
}


/**
 * @opcode      0x1c
 * @opgroup     og_gen_arith_bin
 * @opflclass   arithmetic_carry
 */
FNIEMOP_DEF(iemOp_sbb_Al_Ib)
{
    IEMOP_MNEMONIC2(FIXED, SBB, sbb, AL, Ib, DISOPTYPE_HARMLESS, IEMOPHINT_IGNORES_OP_SIZES);
    IEMOP_BODY_BINARY_AL_Ib(sbb, RT_ARCH_VAL_AMD64 | RT_ARCH_VAL_ARM64);
}


/**
 * @opcode      0x1d
 * @opgroup     og_gen_arith_bin
 * @opflclass   arithmetic_carry
 */
FNIEMOP_DEF(iemOp_sbb_eAX_Iz)
{
    IEMOP_MNEMONIC2(FIXED, SBB, sbb, rAX, Iz, DISOPTYPE_HARMLESS, 0);
    IEMOP_BODY_BINARY_rAX_Iz_RW(sbb, RT_ARCH_VAL_AMD64 | RT_ARCH_VAL_ARM64);
}


/**
 * @opcode      0x1e
 * @opgroup     og_stack_sreg
 */
FNIEMOP_DEF(iemOp_push_DS)
{
    IEMOP_MNEMONIC1(FIXED, PUSH, push, DS, DISOPTYPE_HARMLESS | DISOPTYPE_X86_INVALID_64, 0);
    IEMOP_HLP_NO_64BIT();
    return FNIEMOP_CALL_1(iemOpCommonPushSReg, X86_SREG_DS);
}


/**
 * @opcode      0x1f
 * @opgroup     og_stack_sreg
 */
FNIEMOP_DEF(iemOp_pop_DS)
{
    IEMOP_MNEMONIC1(FIXED, POP, pop, DS, DISOPTYPE_HARMLESS | DISOPTYPE_X86_INVALID_64 | DISOPTYPE_RRM_DANGEROUS, 0);
    IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
    IEMOP_HLP_NO_64BIT();
    IEM_MC_DEFER_TO_CIMPL_2_RET(IEM_CIMPL_F_MODE,
                                  RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xSP)
                                | RT_BIT_64(kIemNativeGstReg_SegSelFirst    + X86_SREG_DS)
                                | RT_BIT_64(kIemNativeGstReg_SegBaseFirst   + X86_SREG_DS)
                                | RT_BIT_64(kIemNativeGstReg_SegLimitFirst  + X86_SREG_DS)
                                | RT_BIT_64(kIemNativeGstReg_SegAttribFirst + X86_SREG_DS),
                                iemCImpl_pop_Sreg, X86_SREG_DS, pVCpu->iem.s.enmEffOpSize);
}


/**
 * @opcode      0x20
 * @opgroup     og_gen_arith_bin
 * @opflclass   logical
 */
FNIEMOP_DEF(iemOp_and_Eb_Gb)
{
    IEMOP_MNEMONIC2(MR, AND, and, Eb, Gb, DISOPTYPE_HARMLESS, IEMOPHINT_IGNORES_OP_SIZES | IEMOPHINT_LOCK_ALLOWED);
    IEMOP_VERIFICATION_UNDEFINED_EFLAGS(X86_EFL_AF);
    uint8_t bRm; IEM_OPCODE_GET_NEXT_U8(&bRm);
    IEMOP_BODY_BINARY_rm_r8_RW(bRm, and, RT_ARCH_VAL_AMD64 | RT_ARCH_VAL_ARM64, 0);
}


/**
 * @opcode      0x21
 * @opgroup     og_gen_arith_bin
 * @opflclass   logical
 */
FNIEMOP_DEF(iemOp_and_Ev_Gv)
{
    IEMOP_MNEMONIC2(MR, AND, and, Ev, Gv, DISOPTYPE_HARMLESS, IEMOPHINT_LOCK_ALLOWED);
    IEMOP_VERIFICATION_UNDEFINED_EFLAGS(X86_EFL_AF);
    uint8_t bRm; IEM_OPCODE_GET_NEXT_U8(&bRm);
    IEMOP_BODY_BINARY_rm_rv_RW(    bRm, and, RT_ARCH_VAL_AMD64 | RT_ARCH_VAL_ARM64, 0);
    IEMOP_BODY_BINARY_rm_rv_LOCKED(bRm, and);
}


/**
 * @opcode      0x22
 * @opgroup     og_gen_arith_bin
 * @opflclass   logical
 */
FNIEMOP_DEF(iemOp_and_Gb_Eb)
{
    IEMOP_MNEMONIC2(RM, AND, and, Gb, Eb, DISOPTYPE_HARMLESS, IEMOPHINT_IGNORES_OP_SIZES);
    IEMOP_VERIFICATION_UNDEFINED_EFLAGS(X86_EFL_AF);
    uint8_t bRm; IEM_OPCODE_GET_NEXT_U8(&bRm);
    IEMOP_BODY_BINARY_r8_rm(bRm, and, RT_ARCH_VAL_AMD64 | RT_ARCH_VAL_ARM64);
}


/**
 * @opcode      0x23
 * @opgroup     og_gen_arith_bin
 * @opflclass   logical
 */
FNIEMOP_DEF(iemOp_and_Gv_Ev)
{
    IEMOP_MNEMONIC2(RM, AND, and, Gv, Ev, DISOPTYPE_HARMLESS, 0);
    IEMOP_VERIFICATION_UNDEFINED_EFLAGS(X86_EFL_AF);
    uint8_t bRm; IEM_OPCODE_GET_NEXT_U8(&bRm);
    IEMOP_BODY_BINARY_rv_rm(bRm, iemAImpl_and_u16, iemAImpl_and_u32, iemAImpl_and_u64, 0, and, RT_ARCH_VAL_AMD64 | RT_ARCH_VAL_ARM64);
}


/**
 * @opcode      0x24
 * @opgroup     og_gen_arith_bin
 * @opflclass   logical
 */
FNIEMOP_DEF(iemOp_and_Al_Ib)
{
    IEMOP_MNEMONIC2(FIXED, AND, and, AL, Ib, DISOPTYPE_HARMLESS, 0);
    IEMOP_VERIFICATION_UNDEFINED_EFLAGS(X86_EFL_AF);
    IEMOP_BODY_BINARY_AL_Ib(and, RT_ARCH_VAL_AMD64 | RT_ARCH_VAL_ARM64);
}


/**
 * @opcode      0x25
 * @opgroup     og_gen_arith_bin
 * @opflclass   logical
 */
FNIEMOP_DEF(iemOp_and_eAX_Iz)
{
    IEMOP_MNEMONIC2(FIXED, AND, and, rAX, Iz, DISOPTYPE_HARMLESS, 0);
    IEMOP_VERIFICATION_UNDEFINED_EFLAGS(X86_EFL_AF);
    IEMOP_BODY_BINARY_rAX_Iz_RW(and, RT_ARCH_VAL_AMD64 | RT_ARCH_VAL_ARM64);
}


/**
 * @opcode      0x26
 * @opmnemonic  SEG
 * @op1         ES
 * @opgroup     og_prefix
 * @openc       prefix
 * @opdisenum   OP_SEG
 * @ophints     harmless
 */
FNIEMOP_DEF(iemOp_seg_ES)
{
    IEMOP_HLP_CLEAR_REX_NOT_BEFORE_OPCODE("seg es");
    pVCpu->iem.s.fPrefixes |= IEM_OP_PRF_SEG_ES;
    pVCpu->iem.s.iEffSeg    = X86_SREG_ES;

    uint8_t b; IEM_OPCODE_GET_NEXT_U8(&b);
    return FNIEMOP_CALL(g_apfnOneByteMap[b]);
}


/**
 * @opcode      0x27
 * @opfltest    af,cf
 * @opflmodify  cf,pf,af,zf,sf,of
 * @opflundef   of
 */
FNIEMOP_DEF(iemOp_daa)
{
    IEMOP_MNEMONIC0(FIXED, DAA, daa, DISOPTYPE_HARMLESS | DISOPTYPE_X86_INVALID_64, 0); /* express implicit AL register use */
    IEMOP_HLP_NO_64BIT();
    IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
    IEMOP_VERIFICATION_UNDEFINED_EFLAGS(X86_EFL_OF);
    IEM_MC_DEFER_TO_CIMPL_0_RET(IEM_CIMPL_F_STATUS_FLAGS, RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xAX), iemCImpl_daa);
}


/**
 * Special case body for word/dword/qword instruction like SUB and XOR that can
 * be used to zero a register.
 *
 * This can be used both for the rv_rm and rm_rv forms since it's working on the
 * same register.
 */
#define IEMOP_BODY_BINARY_rv_SAME_REG_ZERO(a_bRm) \
    if (   (a_bRm >> X86_MODRM_REG_SHIFT) == ((a_bRm & X86_MODRM_RM_MASK) | (X86_MOD_REG << X86_MODRM_REG_SHIFT)) \
        && pVCpu->iem.s.uRexReg == pVCpu->iem.s.uRexB) \
    { \
        switch (pVCpu->iem.s.enmEffOpSize) \
        { \
            case IEMMODE_16BIT: \
                IEM_MC_BEGIN(0, 0); \
                IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX(); \
                IEM_MC_STORE_GREG_U16_CONST(IEM_GET_MODRM_RM(pVCpu, a_bRm), 0); \
                IEM_MC_LOCAL_EFLAGS(fEFlags); \
                IEM_MC_AND_LOCAL_U32(fEFlags, ~(uint32_t)X86_EFL_STATUS_BITS); \
                IEM_MC_OR_LOCAL_U32(fEFlags, X86_EFL_PF | X86_EFL_ZF); \
                IEM_MC_COMMIT_EFLAGS(fEFlags); \
                IEM_MC_ADVANCE_RIP_AND_FINISH(); \
                IEM_MC_END(); \
                break; \
                \
            case IEMMODE_32BIT: \
                IEM_MC_BEGIN(IEM_MC_F_MIN_386, 0); \
                IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX(); \
                IEM_MC_STORE_GREG_U32_CONST(IEM_GET_MODRM_RM(pVCpu, a_bRm), 0); \
                IEM_MC_LOCAL_EFLAGS(fEFlags); \
                IEM_MC_AND_LOCAL_U32(fEFlags, ~(uint32_t)X86_EFL_STATUS_BITS); \
                IEM_MC_OR_LOCAL_U32(fEFlags, X86_EFL_PF | X86_EFL_ZF); \
                IEM_MC_COMMIT_EFLAGS(fEFlags); \
                IEM_MC_ADVANCE_RIP_AND_FINISH(); \
                IEM_MC_END(); \
                break; \
                \
            case IEMMODE_64BIT: \
                IEM_MC_BEGIN(IEM_MC_F_64BIT, 0); \
                IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX(); \
                IEM_MC_STORE_GREG_U64_CONST(IEM_GET_MODRM_RM(pVCpu, a_bRm), 0); \
                IEM_MC_LOCAL_EFLAGS(fEFlags); \
                IEM_MC_AND_LOCAL_U32(fEFlags, ~(uint32_t)X86_EFL_STATUS_BITS); \
                IEM_MC_OR_LOCAL_U32(fEFlags, X86_EFL_PF | X86_EFL_ZF); \
                IEM_MC_COMMIT_EFLAGS(fEFlags); \
                IEM_MC_ADVANCE_RIP_AND_FINISH(); \
                IEM_MC_END(); \
                break; \
                \
            IEM_NOT_REACHED_DEFAULT_CASE_RET(); \
        } \
    } ((void)0)


/**
 * @opcode      0x28
 * @opgroup     og_gen_arith_bin
 * @opflclass   arithmetic
 */
FNIEMOP_DEF(iemOp_sub_Eb_Gb)
{
    IEMOP_MNEMONIC2(MR, SUB, sub, Eb, Gb, DISOPTYPE_HARMLESS, IEMOPHINT_IGNORES_OP_SIZES | IEMOPHINT_LOCK_ALLOWED);
    uint8_t bRm; IEM_OPCODE_GET_NEXT_U8(&bRm);
    IEMOP_BODY_BINARY_r8_SAME_REG_ZERO(bRm); /* Special case: sub samereg, samereg - zeros samereg and sets EFLAGS to know value */
    IEMOP_BODY_BINARY_rm_r8_RW(bRm, sub, RT_ARCH_VAL_AMD64 | RT_ARCH_VAL_ARM64, 0);
}


/**
 * @opcode      0x29
 * @opgroup     og_gen_arith_bin
 * @opflclass   arithmetic
 */
FNIEMOP_DEF(iemOp_sub_Ev_Gv)
{
    IEMOP_MNEMONIC2(MR, SUB, sub, Ev, Gv, DISOPTYPE_HARMLESS, IEMOPHINT_LOCK_ALLOWED);
    uint8_t bRm; IEM_OPCODE_GET_NEXT_U8(&bRm);
    IEMOP_BODY_BINARY_rv_SAME_REG_ZERO(bRm); /* Special case: sub samereg, samereg - zeros samereg and sets EFLAGS to know value */
    IEMOP_BODY_BINARY_rm_rv_RW(    bRm, sub, RT_ARCH_VAL_AMD64 | RT_ARCH_VAL_ARM64, 0);
    IEMOP_BODY_BINARY_rm_rv_LOCKED(bRm, sub);
}


/**
 * @opcode      0x2a
 * @opgroup     og_gen_arith_bin
 * @opflclass   arithmetic
 */
FNIEMOP_DEF(iemOp_sub_Gb_Eb)
{
    IEMOP_MNEMONIC2(RM, SUB, sub, Gb, Eb, DISOPTYPE_HARMLESS, IEMOPHINT_IGNORES_OP_SIZES);
    uint8_t bRm; IEM_OPCODE_GET_NEXT_U8(&bRm);
    IEMOP_BODY_BINARY_r8_SAME_REG_ZERO(bRm); /* Special case: sub samereg, samereg - zeros samereg and sets EFLAGS to know value */
    IEMOP_BODY_BINARY_r8_rm(bRm, sub, RT_ARCH_VAL_AMD64 | RT_ARCH_VAL_ARM64);
}


/**
 * @opcode      0x2b
 * @opgroup     og_gen_arith_bin
 * @opflclass   arithmetic
 */
FNIEMOP_DEF(iemOp_sub_Gv_Ev)
{
    IEMOP_MNEMONIC2(RM, SUB, sub, Gv, Ev, DISOPTYPE_HARMLESS, 0);
    uint8_t bRm; IEM_OPCODE_GET_NEXT_U8(&bRm);
    IEMOP_BODY_BINARY_rv_SAME_REG_ZERO(bRm); /* Special case: sub samereg, samereg - zeros samereg and sets EFLAGS to know value */
    IEMOP_BODY_BINARY_rv_rm(bRm, iemAImpl_sub_u16, iemAImpl_sub_u32, iemAImpl_sub_u64, 0, sub, RT_ARCH_VAL_AMD64 | RT_ARCH_VAL_ARM64);
}


/**
 * @opcode      0x2c
 * @opgroup     og_gen_arith_bin
 * @opflclass   arithmetic
 */
FNIEMOP_DEF(iemOp_sub_Al_Ib)
{
    IEMOP_MNEMONIC2(FIXED, SUB, sub, AL, Ib, DISOPTYPE_HARMLESS, IEMOPHINT_IGNORES_OP_SIZES);
    IEMOP_BODY_BINARY_AL_Ib(sub, RT_ARCH_VAL_AMD64 | RT_ARCH_VAL_ARM64);
}


/**
 * @opcode      0x2d
 * @opgroup     og_gen_arith_bin
 * @opflclass   arithmetic
 */
FNIEMOP_DEF(iemOp_sub_eAX_Iz)
{
    IEMOP_MNEMONIC2(FIXED, SUB, sub, rAX, Iz, DISOPTYPE_HARMLESS, 0);
    IEMOP_BODY_BINARY_rAX_Iz_RW(sub, RT_ARCH_VAL_AMD64 | RT_ARCH_VAL_ARM64);
}


/**
 * @opcode      0x2e
 * @opmnemonic  SEG
 * @op1         CS
 * @opgroup     og_prefix
 * @openc       prefix
 * @opdisenum   OP_SEG
 * @ophints     harmless
 */
FNIEMOP_DEF(iemOp_seg_CS)
{
    IEMOP_HLP_CLEAR_REX_NOT_BEFORE_OPCODE("seg cs");
    pVCpu->iem.s.fPrefixes |= IEM_OP_PRF_SEG_CS;
    pVCpu->iem.s.iEffSeg    = X86_SREG_CS;

    uint8_t b; IEM_OPCODE_GET_NEXT_U8(&b);
    return FNIEMOP_CALL(g_apfnOneByteMap[b]);
}


/**
 * @opcode      0x2f
 * @opfltest    af,cf
 * @opflmodify  cf,pf,af,zf,sf,of
 * @opflundef   of
 */
FNIEMOP_DEF(iemOp_das)
{
    IEMOP_MNEMONIC0(FIXED, DAS, das, DISOPTYPE_HARMLESS | DISOPTYPE_X86_INVALID_64, 0); /* express implicit AL register use */
    IEMOP_HLP_NO_64BIT();
    IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
    IEMOP_VERIFICATION_UNDEFINED_EFLAGS(X86_EFL_OF);
    IEM_MC_DEFER_TO_CIMPL_0_RET(IEM_CIMPL_F_STATUS_FLAGS, RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xAX), iemCImpl_das);
}


/**
 * @opcode      0x30
 * @opgroup     og_gen_arith_bin
 * @opflclass   logical
 */
FNIEMOP_DEF(iemOp_xor_Eb_Gb)
{
    IEMOP_MNEMONIC2(MR, XOR, xor, Eb, Gb, DISOPTYPE_HARMLESS, IEMOPHINT_IGNORES_OP_SIZES | IEMOPHINT_LOCK_ALLOWED);
    IEMOP_VERIFICATION_UNDEFINED_EFLAGS(X86_EFL_AF);
    uint8_t bRm; IEM_OPCODE_GET_NEXT_U8(&bRm);
    IEMOP_BODY_BINARY_r8_SAME_REG_ZERO(bRm); /* Special case: xor samereg, samereg - zeros samereg and sets EFLAGS to know value */
    IEMOP_BODY_BINARY_rm_r8_RW(bRm, xor, RT_ARCH_VAL_AMD64 | RT_ARCH_VAL_ARM64, 0);
}


/**
 * @opcode      0x31
 * @opgroup     og_gen_arith_bin
 * @opflclass   logical
 */
FNIEMOP_DEF(iemOp_xor_Ev_Gv)
{
    IEMOP_MNEMONIC2(MR, XOR, xor, Ev, Gv, DISOPTYPE_HARMLESS, IEMOPHINT_LOCK_ALLOWED);
    IEMOP_VERIFICATION_UNDEFINED_EFLAGS(X86_EFL_AF);
    uint8_t bRm; IEM_OPCODE_GET_NEXT_U8(&bRm);
    IEMOP_BODY_BINARY_rm_rv_RW(        bRm, xor, RT_ARCH_VAL_AMD64 | RT_ARCH_VAL_ARM64, 0);
    IEMOP_BODY_BINARY_rv_SAME_REG_ZERO(bRm); /* Special case: xor samereg, samereg - zeros samereg and sets EFLAGS to know value */
    IEMOP_BODY_BINARY_rm_rv_LOCKED(    bRm, xor);
}


/**
 * @opcode      0x32
 * @opgroup     og_gen_arith_bin
 * @opflclass   logical
 */
FNIEMOP_DEF(iemOp_xor_Gb_Eb)
{
    IEMOP_MNEMONIC2(RM, XOR, xor, Gb, Eb, DISOPTYPE_HARMLESS, IEMOPHINT_IGNORES_OP_SIZES);
    IEMOP_VERIFICATION_UNDEFINED_EFLAGS(X86_EFL_AF);
    uint8_t bRm; IEM_OPCODE_GET_NEXT_U8(&bRm);
    IEMOP_BODY_BINARY_r8_SAME_REG_ZERO(bRm); /* Special case: xor samereg, samereg - zeros samereg and sets EFLAGS to know value */
    IEMOP_BODY_BINARY_r8_rm(bRm, xor, RT_ARCH_VAL_AMD64 | RT_ARCH_VAL_ARM64);
}


/**
 * @opcode      0x33
 * @opgroup     og_gen_arith_bin
 * @opflclass   logical
 */
FNIEMOP_DEF(iemOp_xor_Gv_Ev)
{
    IEMOP_MNEMONIC2(RM, XOR, xor, Gv, Ev, DISOPTYPE_HARMLESS, 0);
    IEMOP_VERIFICATION_UNDEFINED_EFLAGS(X86_EFL_AF);
    uint8_t bRm; IEM_OPCODE_GET_NEXT_U8(&bRm);
    IEMOP_BODY_BINARY_rv_SAME_REG_ZERO(bRm); /* Special case: xor samereg, samereg - zeros samereg and sets EFLAGS to know value */
    IEMOP_BODY_BINARY_rv_rm(bRm, iemAImpl_xor_u16, iemAImpl_xor_u32, iemAImpl_xor_u64, 0, xor, RT_ARCH_VAL_AMD64 | RT_ARCH_VAL_ARM64);
}


/**
 * @opcode      0x34
 * @opgroup     og_gen_arith_bin
 * @opflclass   logical
 */
FNIEMOP_DEF(iemOp_xor_Al_Ib)
{
    IEMOP_MNEMONIC2(FIXED, XOR, xor, AL, Ib, DISOPTYPE_HARMLESS, IEMOPHINT_IGNORES_OP_SIZES);
    IEMOP_VERIFICATION_UNDEFINED_EFLAGS(X86_EFL_AF);
    IEMOP_BODY_BINARY_AL_Ib(xor, RT_ARCH_VAL_AMD64 | RT_ARCH_VAL_ARM64);
}


/**
 * @opcode      0x35
 * @opgroup     og_gen_arith_bin
 * @opflclass   logical
 */
FNIEMOP_DEF(iemOp_xor_eAX_Iz)
{
    IEMOP_MNEMONIC2(FIXED, XOR, xor, rAX, Iz, DISOPTYPE_HARMLESS, IEMOPHINT_IGNORES_OP_SIZES);
    IEMOP_VERIFICATION_UNDEFINED_EFLAGS(X86_EFL_AF);
    IEMOP_BODY_BINARY_rAX_Iz_RW(xor, RT_ARCH_VAL_AMD64 | RT_ARCH_VAL_ARM64);
}


/**
 * @opcode      0x36
 * @opmnemonic  SEG
 * @op1         SS
 * @opgroup     og_prefix
 * @openc       prefix
 * @opdisenum   OP_SEG
 * @ophints     harmless
 */
FNIEMOP_DEF(iemOp_seg_SS)
{
    IEMOP_HLP_CLEAR_REX_NOT_BEFORE_OPCODE("seg ss");
    pVCpu->iem.s.fPrefixes |= IEM_OP_PRF_SEG_SS;
    pVCpu->iem.s.iEffSeg    = X86_SREG_SS;

    uint8_t b; IEM_OPCODE_GET_NEXT_U8(&b);
    return FNIEMOP_CALL(g_apfnOneByteMap[b]);
}


/**
 * @opcode      0x37
 * @opfltest    af
 * @opflmodify  cf,pf,af,zf,sf,of
 * @opflundef   pf,zf,sf,of
 * @opgroup     og_gen_arith_dec
 * @optest              efl&~=af ax=9      -> efl&|=nc,po,na,nz,pl,nv
 * @optest              efl&~=af ax=0      -> efl&|=nc,po,na,zf,pl,nv
 * @optest      intel / efl&~=af ax=0x00f0 -> ax=0x0000 efl&|=nc,po,na,zf,pl,nv
 * @optest      amd   / efl&~=af ax=0x00f0 -> ax=0x0000 efl&|=nc,po,na,nz,pl,nv
 * @optest              efl&~=af ax=0x00f9 -> ax=0x0009 efl&|=nc,po,na,nz,pl,nv
 * @optest              efl|=af  ax=0      -> ax=0x0106 efl&|=cf,po,af,nz,pl,nv
 * @optest              efl|=af  ax=0x0100 -> ax=0x0206 efl&|=cf,po,af,nz,pl,nv
 * @optest      intel / efl|=af  ax=0x000a -> ax=0x0100 efl&|=cf,po,af,zf,pl,nv
 * @optest      amd   / efl|=af  ax=0x000a -> ax=0x0100 efl&|=cf,pe,af,nz,pl,nv
 * @optest      intel / efl|=af  ax=0x010a -> ax=0x0200 efl&|=cf,po,af,zf,pl,nv
 * @optest      amd   / efl|=af  ax=0x010a -> ax=0x0200 efl&|=cf,pe,af,nz,pl,nv
 * @optest      intel / efl|=af  ax=0x0f0a -> ax=0x1000 efl&|=cf,po,af,zf,pl,nv
 * @optest      amd   / efl|=af  ax=0x0f0a -> ax=0x1000 efl&|=cf,pe,af,nz,pl,nv
 * @optest      intel / efl|=af  ax=0x7f0a -> ax=0x8000 efl&|=cf,po,af,zf,pl,nv
 * @optest      amd   / efl|=af  ax=0x7f0a -> ax=0x8000 efl&|=cf,pe,af,nz,ng,ov
 * @optest      intel / efl|=af  ax=0xff0a -> ax=0x0000 efl&|=cf,po,af,zf,pl,nv
 * @optest      amd   / efl|=af  ax=0xff0a -> ax=0x0000 efl&|=cf,pe,af,nz,pl,nv
 * @optest      intel / efl&~=af ax=0xff0a -> ax=0x0000 efl&|=cf,po,af,zf,pl,nv
 * @optest      amd   / efl&~=af ax=0xff0a -> ax=0x0000 efl&|=cf,pe,af,nz,pl,nv
 * @optest      intel / efl&~=af ax=0x000b -> ax=0x0101 efl&|=cf,pe,af,nz,pl,nv
 * @optest      amd   / efl&~=af ax=0x000b -> ax=0x0101 efl&|=cf,po,af,nz,pl,nv
 * @optest      intel / efl&~=af ax=0x000c -> ax=0x0102 efl&|=cf,pe,af,nz,pl,nv
 * @optest      amd   / efl&~=af ax=0x000c -> ax=0x0102 efl&|=cf,po,af,nz,pl,nv
 * @optest      intel / efl&~=af ax=0x000d -> ax=0x0103 efl&|=cf,po,af,nz,pl,nv
 * @optest      amd   / efl&~=af ax=0x000d -> ax=0x0103 efl&|=cf,pe,af,nz,pl,nv
 * @optest      intel / efl&~=af ax=0x000e -> ax=0x0104 efl&|=cf,pe,af,nz,pl,nv
 * @optest      amd   / efl&~=af ax=0x000e -> ax=0x0104 efl&|=cf,po,af,nz,pl,nv
 * @optest      intel / efl&~=af ax=0x000f -> ax=0x0105 efl&|=cf,po,af,nz,pl,nv
 * @optest      amd   / efl&~=af ax=0x000f -> ax=0x0105 efl&|=cf,pe,af,nz,pl,nv
 * @optest      intel / efl&~=af ax=0x020f -> ax=0x0305 efl&|=cf,po,af,nz,pl,nv
 * @optest      amd   / efl&~=af ax=0x020f -> ax=0x0305 efl&|=cf,pe,af,nz,pl,nv
 */
FNIEMOP_DEF(iemOp_aaa)
{
    IEMOP_MNEMONIC0(FIXED, AAA, aaa, DISOPTYPE_HARMLESS | DISOPTYPE_X86_INVALID_64, 0); /* express implicit AL/AX register use */
    IEMOP_HLP_NO_64BIT();
    IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
    IEMOP_VERIFICATION_UNDEFINED_EFLAGS(X86_EFL_OF);

    IEM_MC_DEFER_TO_CIMPL_0_RET(IEM_CIMPL_F_STATUS_FLAGS, RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xAX), iemCImpl_aaa);
}


/**
 * Body for word/dword/qword the instruction CMP, ++ with a register as the
 * destination.
 *
 * @note Used both in OneByte and TwoByte0f.
 */
#define IEMOP_BODY_BINARY_rv_rm_RO(a_bRm, a_InsNm, a_fNativeArchs) \
    /* \
     * If rm is denoting a register, no more instruction bytes. \
     */ \
    if (IEM_IS_MODRM_REG_MODE(a_bRm)) \
    { \
        switch (pVCpu->iem.s.enmEffOpSize) \
        { \
            case IEMMODE_16BIT: \
                IEM_MC_BEGIN(0, 0); \
                IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX(); \
                IEM_MC_ARG(uint16_t,        u16Src,     2); \
                IEM_MC_FETCH_GREG_U16(u16Src, IEM_GET_MODRM_RM(pVCpu, a_bRm)); \
                IEM_MC_NATIVE_IF(a_fNativeArchs) { \
                    IEM_MC_LOCAL(uint16_t,  u16Dst); \
                    IEM_MC_FETCH_GREG_U16(u16Dst, IEM_GET_MODRM_REG(pVCpu, bRm)); \
                    IEM_MC_LOCAL_EFLAGS(uEFlags); \
                    IEM_MC_NATIVE_EMIT_4(RT_CONCAT3(iemNativeEmit_,a_InsNm,_r_r_efl), u16Dst, u16Src, uEFlags, 16); \
                    IEM_MC_COMMIT_EFLAGS_OPT(uEFlags); \
                } IEM_MC_NATIVE_ELSE() { \
                    IEM_MC_ARG(uint16_t *,  pu16Dst,    1); \
                    IEM_MC_REF_GREG_U16(pu16Dst, IEM_GET_MODRM_REG(pVCpu, bRm)); \
                    IEM_MC_ARG_EFLAGS(      fEFlagsIn,  0); \
                    IEM_MC_CALL_AIMPL_3(uint32_t, fEFlagsRet, RT_CONCAT3(iemAImpl_,a_InsNm,_u16), fEFlagsIn, pu16Dst, u16Src); \
                    IEM_MC_COMMIT_EFLAGS(fEFlagsRet); \
                } IEM_MC_NATIVE_ENDIF(); \
                IEM_MC_ADVANCE_RIP_AND_FINISH(); \
                IEM_MC_END(); \
                break; \
            \
            case IEMMODE_32BIT: \
                IEM_MC_BEGIN(IEM_MC_F_MIN_386, 0); \
                IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX(); \
                IEM_MC_ARG(uint32_t,        u32Src,     2); \
                IEM_MC_FETCH_GREG_U32(u32Src, IEM_GET_MODRM_RM(pVCpu, a_bRm)); \
                IEM_MC_NATIVE_IF(a_fNativeArchs) { \
                    IEM_MC_LOCAL(uint32_t,  u32Dst); \
                    IEM_MC_FETCH_GREG_U32(u32Dst, IEM_GET_MODRM_REG(pVCpu, bRm)); \
                    IEM_MC_LOCAL_EFLAGS(uEFlags); \
                    IEM_MC_NATIVE_EMIT_4(RT_CONCAT3(iemNativeEmit_,a_InsNm,_r_r_efl), u32Dst, u32Src, uEFlags, 32); \
                    IEM_MC_COMMIT_EFLAGS_OPT(uEFlags); \
                } IEM_MC_NATIVE_ELSE() { \
                    IEM_MC_ARG(uint32_t *,  pu32Dst,    1); \
                    IEM_MC_REF_GREG_U32(pu32Dst, IEM_GET_MODRM_REG(pVCpu, bRm)); \
                    IEM_MC_ARG_EFLAGS(      fEFlagsIn,  0); \
                    IEM_MC_CALL_AIMPL_3(uint32_t, fEFlagsRet, RT_CONCAT3(iemAImpl_,a_InsNm,_u32), fEFlagsIn, pu32Dst, u32Src); \
                    IEM_MC_COMMIT_EFLAGS(fEFlagsRet); \
                } IEM_MC_NATIVE_ENDIF(); \
                IEM_MC_ADVANCE_RIP_AND_FINISH(); \
                IEM_MC_END(); \
                break; \
            \
            case IEMMODE_64BIT: \
                IEM_MC_BEGIN(IEM_MC_F_64BIT, 0); \
                IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX(); \
                IEM_MC_ARG(uint64_t,        u64Src,     2); \
                IEM_MC_FETCH_GREG_U64(u64Src, IEM_GET_MODRM_RM(pVCpu, a_bRm)); \
                IEM_MC_NATIVE_IF(a_fNativeArchs) { \
                    IEM_MC_LOCAL(uint64_t,  u64Dst); \
                    IEM_MC_FETCH_GREG_U64(u64Dst, IEM_GET_MODRM_REG(pVCpu, bRm)); \
                    IEM_MC_LOCAL_EFLAGS(uEFlags); \
                    IEM_MC_NATIVE_EMIT_4(RT_CONCAT3(iemNativeEmit_,a_InsNm,_r_r_efl), u64Dst, u64Src, uEFlags, 64); \
                    IEM_MC_COMMIT_EFLAGS_OPT(uEFlags); \
                } IEM_MC_NATIVE_ELSE() { \
                    IEM_MC_ARG(uint64_t *,  pu64Dst,    1); \
                    IEM_MC_REF_GREG_U64(pu64Dst, IEM_GET_MODRM_REG(pVCpu, bRm)); \
                    IEM_MC_ARG_EFLAGS(      fEFlagsIn,  0); \
                    IEM_MC_CALL_AIMPL_3(uint32_t, fEFlagsRet, RT_CONCAT3(iemAImpl_,a_InsNm,_u64), fEFlagsIn, pu64Dst, u64Src); \
                    IEM_MC_COMMIT_EFLAGS(fEFlagsRet); \
                } IEM_MC_NATIVE_ENDIF(); \
                IEM_MC_ADVANCE_RIP_AND_FINISH(); \
                IEM_MC_END(); \
                break; \
            \
            IEM_NOT_REACHED_DEFAULT_CASE_RET(); \
        } \
    } \
    else \
    { \
        /* \
         * We're accessing memory. \
         */ \
        switch (pVCpu->iem.s.enmEffOpSize) \
        { \
            case IEMMODE_16BIT: \
                IEM_MC_BEGIN(0, 0); \
                IEM_MC_LOCAL(RTGCPTR,  GCPtrEffDst); \
                IEM_MC_CALC_RM_EFF_ADDR(GCPtrEffDst, a_bRm, 0); \
                IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX(); \
                IEM_MC_ARG(uint16_t,        u16Src,     2); \
                IEM_MC_FETCH_MEM_U16(u16Src, pVCpu->iem.s.iEffSeg, GCPtrEffDst); \
                IEM_MC_NATIVE_IF(a_fNativeArchs) { \
                    IEM_MC_LOCAL(uint16_t,  u16Dst); \
                    IEM_MC_FETCH_GREG_U16(u16Dst, IEM_GET_MODRM_REG(pVCpu, bRm)); \
                    IEM_MC_LOCAL_EFLAGS(uEFlags); \
                    IEM_MC_NATIVE_EMIT_4(RT_CONCAT3(iemNativeEmit_,a_InsNm,_r_r_efl), u16Dst, u16Src, uEFlags, 16); \
                    IEM_MC_COMMIT_EFLAGS_OPT(uEFlags); \
                } IEM_MC_NATIVE_ELSE() { \
                    IEM_MC_ARG(uint16_t *,  pu16Dst,    1); \
                    IEM_MC_REF_GREG_U16(pu16Dst, IEM_GET_MODRM_REG(pVCpu, a_bRm)); \
                    IEM_MC_ARG_EFLAGS(      fEFlagsIn,  0); \
                    IEM_MC_CALL_AIMPL_3(uint32_t, fEFlagsRet, RT_CONCAT3(iemAImpl_,a_InsNm,_u16), fEFlagsIn, pu16Dst, u16Src); \
                    IEM_MC_COMMIT_EFLAGS(fEFlagsRet); \
                } IEM_MC_NATIVE_ENDIF(); \
                IEM_MC_ADVANCE_RIP_AND_FINISH(); \
                IEM_MC_END(); \
                break; \
            \
            case IEMMODE_32BIT: \
                IEM_MC_BEGIN(IEM_MC_F_MIN_386, 0); \
                IEM_MC_LOCAL(RTGCPTR,  GCPtrEffDst); \
                IEM_MC_CALC_RM_EFF_ADDR(GCPtrEffDst, a_bRm, 0); \
                IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX(); \
                IEM_MC_ARG(uint32_t,        u32Src,  2); \
                IEM_MC_FETCH_MEM_U32(u32Src, pVCpu->iem.s.iEffSeg, GCPtrEffDst); \
                IEM_MC_NATIVE_IF(a_fNativeArchs) { \
                    IEM_MC_LOCAL(uint32_t,  u32Dst); \
                    IEM_MC_FETCH_GREG_U32(u32Dst, IEM_GET_MODRM_REG(pVCpu, bRm)); \
                    IEM_MC_LOCAL_EFLAGS(uEFlags); \
                    IEM_MC_NATIVE_EMIT_4(RT_CONCAT3(iemNativeEmit_,a_InsNm,_r_r_efl), u32Dst, u32Src, uEFlags, 32); \
                    IEM_MC_COMMIT_EFLAGS_OPT(uEFlags); \
                } IEM_MC_NATIVE_ELSE() { \
                    IEM_MC_ARG(uint32_t *,  pu32Dst,    1); \
                    IEM_MC_REF_GREG_U32(pu32Dst, IEM_GET_MODRM_REG(pVCpu, a_bRm)); \
                    IEM_MC_ARG_EFLAGS(      fEFlagsIn,  0); \
                    IEM_MC_CALL_AIMPL_3(uint32_t, fEFlagsRet, RT_CONCAT3(iemAImpl_,a_InsNm,_u32), fEFlagsIn, pu32Dst, u32Src); \
                    IEM_MC_COMMIT_EFLAGS(fEFlagsRet); \
                } IEM_MC_NATIVE_ENDIF(); \
                IEM_MC_ADVANCE_RIP_AND_FINISH(); \
                IEM_MC_END(); \
                break; \
            \
            case IEMMODE_64BIT: \
                IEM_MC_BEGIN(IEM_MC_F_64BIT, 0); \
                IEM_MC_LOCAL(RTGCPTR,  GCPtrEffDst); \
                IEM_MC_CALC_RM_EFF_ADDR(GCPtrEffDst, a_bRm, 0); \
                IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX(); \
                IEM_MC_ARG(uint64_t,        u64Src,     2); \
                IEM_MC_FETCH_MEM_U64(u64Src, pVCpu->iem.s.iEffSeg, GCPtrEffDst); \
                IEM_MC_NATIVE_IF(a_fNativeArchs) { \
                    IEM_MC_LOCAL(uint64_t,  u64Dst); \
                    IEM_MC_FETCH_GREG_U64(u64Dst, IEM_GET_MODRM_REG(pVCpu, bRm)); \
                    IEM_MC_LOCAL_EFLAGS(uEFlags); \
                    IEM_MC_NATIVE_EMIT_4(RT_CONCAT3(iemNativeEmit_,a_InsNm,_r_r_efl), u64Dst, u64Src, uEFlags, 64); \
                    IEM_MC_COMMIT_EFLAGS_OPT(uEFlags); \
                } IEM_MC_NATIVE_ELSE() { \
                    IEM_MC_ARG(uint64_t *,  pu64Dst,    1); \
                    IEM_MC_REF_GREG_U64(pu64Dst, IEM_GET_MODRM_REG(pVCpu, a_bRm)); \
                    IEM_MC_ARG_EFLAGS(      fEFlagsIn,  0); \
                    IEM_MC_CALL_AIMPL_3(uint32_t, fEFlagsRet, RT_CONCAT3(iemAImpl_,a_InsNm,_u64), fEFlagsIn, pu64Dst, u64Src); \
                    IEM_MC_COMMIT_EFLAGS(fEFlagsRet); \
                } IEM_MC_NATIVE_ENDIF(); \
                IEM_MC_ADVANCE_RIP_AND_FINISH(); \
                IEM_MC_END(); \
                break; \
            \
            IEM_NOT_REACHED_DEFAULT_CASE_RET(); \
        } \
    } \
    (void)0


/**
 * @opcode      0x38
 * @opflclass   arithmetic
 */
FNIEMOP_DEF(iemOp_cmp_Eb_Gb)
{
    IEMOP_MNEMONIC(cmp_Eb_Gb, "cmp Eb,Gb");
    uint8_t bRm; IEM_OPCODE_GET_NEXT_U8(&bRm);
    IEMOP_BODY_BINARY_rm_r8_RO(bRm, iemAImpl_cmp_u8, cmp, RT_ARCH_VAL_AMD64 | RT_ARCH_VAL_ARM64);
}


/**
 * @opcode      0x39
 * @opflclass   arithmetic
 */
FNIEMOP_DEF(iemOp_cmp_Ev_Gv)
{
    IEMOP_MNEMONIC(cmp_Ev_Gv, "cmp Ev,Gv");
    uint8_t bRm; IEM_OPCODE_GET_NEXT_U8(&bRm);
    IEMOP_BODY_BINARY_rm_rv_RO(bRm, cmp, RT_ARCH_VAL_AMD64 | RT_ARCH_VAL_ARM64);
}


/**
 * @opcode      0x3a
 * @opflclass   arithmetic
 */
FNIEMOP_DEF(iemOp_cmp_Gb_Eb)
{
    IEMOP_MNEMONIC(cmp_Gb_Eb, "cmp Gb,Eb");
    uint8_t bRm; IEM_OPCODE_GET_NEXT_U8(&bRm);
    IEMOP_BODY_BINARY_r8_rm_RO(bRm, cmp, RT_ARCH_VAL_AMD64 | RT_ARCH_VAL_ARM64);
}


/**
 * @opcode      0x3b
 * @opflclass   arithmetic
 */
FNIEMOP_DEF(iemOp_cmp_Gv_Ev)
{
    IEMOP_MNEMONIC(cmp_Gv_Ev, "cmp Gv,Ev");
    uint8_t bRm; IEM_OPCODE_GET_NEXT_U8(&bRm);
    IEMOP_BODY_BINARY_rv_rm_RO(bRm, cmp, RT_ARCH_VAL_AMD64 | RT_ARCH_VAL_ARM64);
}


/**
 * @opcode      0x3c
 * @opflclass   arithmetic
 */
FNIEMOP_DEF(iemOp_cmp_Al_Ib)
{
    IEMOP_MNEMONIC(cmp_al_Ib, "cmp al,Ib");
    IEMOP_BODY_BINARY_AL_Ib(cmp, RT_ARCH_VAL_AMD64 | RT_ARCH_VAL_ARM64);
}


/**
 * @opcode      0x3d
 * @opflclass   arithmetic
 */
FNIEMOP_DEF(iemOp_cmp_eAX_Iz)
{
    IEMOP_MNEMONIC(cmp_rAX_Iz, "cmp rAX,Iz");
    IEMOP_BODY_BINARY_rAX_Iz_RO(cmp, RT_ARCH_VAL_AMD64 | RT_ARCH_VAL_ARM64);
}


/**
 * @opcode      0x3e
 */
FNIEMOP_DEF(iemOp_seg_DS)
{
    IEMOP_HLP_CLEAR_REX_NOT_BEFORE_OPCODE("seg ds");
    pVCpu->iem.s.fPrefixes |= IEM_OP_PRF_SEG_DS;
    pVCpu->iem.s.iEffSeg    = X86_SREG_DS;

    uint8_t b; IEM_OPCODE_GET_NEXT_U8(&b);
    return FNIEMOP_CALL(g_apfnOneByteMap[b]);
}


/**
 * @opcode      0x3f
 * @opfltest    af
 * @opflmodify  cf,pf,af,zf,sf,of
 * @opflundef   pf,zf,sf,of
 * @opgroup     og_gen_arith_dec
 * @optest            / efl&~=af ax=0x0009 -> efl&|=nc,po,na,nz,pl,nv
 * @optest            / efl&~=af ax=0x0000 -> efl&|=nc,po,na,zf,pl,nv
 * @optest      intel / efl&~=af ax=0x00f0 -> ax=0x0000 efl&|=nc,po,na,zf,pl,nv
 * @optest      amd   / efl&~=af ax=0x00f0 -> ax=0x0000 efl&|=nc,po,na,nz,pl,nv
 * @optest            / efl&~=af ax=0x00f9 -> ax=0x0009 efl&|=nc,po,na,nz,pl,nv
 * @optest      intel / efl|=af  ax=0x0000 -> ax=0xfe0a efl&|=cf,po,af,nz,pl,nv
 * @optest      amd   / efl|=af  ax=0x0000 -> ax=0xfe0a efl&|=cf,po,af,nz,ng,nv
 * @optest      intel / efl|=af  ax=0x0100 -> ax=0xff0a efl&|=cf,po,af,nz,pl,nv
 * @optest      amd   / efl|=af  ax=0x0100 -> ax=0xff0a efl&|=cf,po,af,nz,ng,nv
 * @optest      intel / efl|=af  ax=0x000a -> ax=0xff04 efl&|=cf,pe,af,nz,pl,nv
 * @optest      amd   / efl|=af  ax=0x000a -> ax=0xff04 efl&|=cf,pe,af,nz,ng,nv
 * @optest            / efl|=af  ax=0x010a -> ax=0x0004 efl&|=cf,pe,af,nz,pl,nv
 * @optest            / efl|=af  ax=0x020a -> ax=0x0104 efl&|=cf,pe,af,nz,pl,nv
 * @optest            / efl|=af  ax=0x0f0a -> ax=0x0e04 efl&|=cf,pe,af,nz,pl,nv
 * @optest            / efl|=af  ax=0x7f0a -> ax=0x7e04 efl&|=cf,pe,af,nz,pl,nv
 * @optest      intel / efl|=af  ax=0xff0a -> ax=0xfe04 efl&|=cf,pe,af,nz,pl,nv
 * @optest      amd   / efl|=af  ax=0xff0a -> ax=0xfe04 efl&|=cf,pe,af,nz,ng,nv
 * @optest      intel / efl&~=af ax=0xff0a -> ax=0xfe04 efl&|=cf,pe,af,nz,pl,nv
 * @optest      amd   / efl&~=af ax=0xff0a -> ax=0xfe04 efl&|=cf,pe,af,nz,ng,nv
 * @optest      intel / efl&~=af ax=0xff09 -> ax=0xff09 efl&|=nc,po,na,nz,pl,nv
 * @optest      amd   / efl&~=af ax=0xff09 -> ax=0xff09 efl&|=nc,po,na,nz,ng,nv
 * @optest      intel / efl&~=af ax=0x000b -> ax=0xff05 efl&|=cf,po,af,nz,pl,nv
 * @optest      amd   / efl&~=af ax=0x000b -> ax=0xff05 efl&|=cf,po,af,nz,ng,nv
 * @optest      intel / efl&~=af ax=0x000c -> ax=0xff06 efl&|=cf,po,af,nz,pl,nv
 * @optest      amd   / efl&~=af ax=0x000c -> ax=0xff06 efl&|=cf,po,af,nz,ng,nv
 * @optest      intel / efl&~=af ax=0x000d -> ax=0xff07 efl&|=cf,pe,af,nz,pl,nv
 * @optest      amd   / efl&~=af ax=0x000d -> ax=0xff07 efl&|=cf,pe,af,nz,ng,nv
 * @optest      intel / efl&~=af ax=0x000e -> ax=0xff08 efl&|=cf,pe,af,nz,pl,nv
 * @optest      amd   / efl&~=af ax=0x000e -> ax=0xff08 efl&|=cf,pe,af,nz,ng,nv
 * @optest      intel / efl&~=af ax=0x000f -> ax=0xff09 efl&|=cf,po,af,nz,pl,nv
 * @optest      amd   / efl&~=af ax=0x000f -> ax=0xff09 efl&|=cf,po,af,nz,ng,nv
 * @optest      intel / efl&~=af ax=0x00fa -> ax=0xff04 efl&|=cf,pe,af,nz,pl,nv
 * @optest      amd   / efl&~=af ax=0x00fa -> ax=0xff04 efl&|=cf,pe,af,nz,ng,nv
 * @optest      intel / efl&~=af ax=0xfffa -> ax=0xfe04 efl&|=cf,pe,af,nz,pl,nv
 * @optest      amd   / efl&~=af ax=0xfffa -> ax=0xfe04 efl&|=cf,pe,af,nz,ng,nv
 */
FNIEMOP_DEF(iemOp_aas)
{
    IEMOP_MNEMONIC0(FIXED, AAS, aas, DISOPTYPE_HARMLESS | DISOPTYPE_X86_INVALID_64, 0); /* express implicit AL/AX register use */
    IEMOP_HLP_NO_64BIT();
    IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
    IEMOP_VERIFICATION_UNDEFINED_EFLAGS(X86_EFL_OF | X86_EFL_OF);

    IEM_MC_DEFER_TO_CIMPL_0_RET(IEM_CIMPL_F_STATUS_FLAGS, RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xAX), iemCImpl_aas);
}


/**
 * Common 'inc/dec register' helper.
 *
 * Not for 64-bit code, only for what became the rex prefixes.
 */
#define IEMOP_BODY_UNARY_GReg(a_fnNormalU16, a_fnNormalU32, a_iReg) \
    switch (pVCpu->iem.s.enmEffOpSize) \
    { \
        case IEMMODE_16BIT: \
            IEM_MC_BEGIN(IEM_MC_F_NOT_64BIT, 0); \
            IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX(); \
            IEM_MC_ARG(uint16_t *,  pu16Dst, 0); \
            IEM_MC_ARG(uint32_t *,  pEFlags, 1); \
            IEM_MC_REF_GREG_U16(pu16Dst, a_iReg); \
            IEM_MC_REF_EFLAGS(pEFlags); \
            IEM_MC_CALL_VOID_AIMPL_2(a_fnNormalU16, pu16Dst, pEFlags); \
            IEM_MC_ADVANCE_RIP_AND_FINISH(); \
            IEM_MC_END(); \
            break; \
            \
        case IEMMODE_32BIT: \
            IEM_MC_BEGIN(IEM_MC_F_MIN_386 | IEM_MC_F_NOT_64BIT, 0); \
            IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX(); \
            IEM_MC_ARG(uint32_t *,  pu32Dst, 0); \
            IEM_MC_ARG(uint32_t *,  pEFlags, 1); \
            IEM_MC_REF_GREG_U32(pu32Dst, a_iReg); \
            IEM_MC_REF_EFLAGS(pEFlags); \
            IEM_MC_CALL_VOID_AIMPL_2(a_fnNormalU32, pu32Dst, pEFlags); \
            IEM_MC_CLEAR_HIGH_GREG_U64(a_iReg); \
            IEM_MC_ADVANCE_RIP_AND_FINISH(); \
            IEM_MC_END(); \
            break; \
        IEM_NOT_REACHED_DEFAULT_CASE_RET(); \
    } \
    (void)0

/**
 * @opcode      0x40
 * @opflclass   incdec
 */
FNIEMOP_DEF(iemOp_inc_eAX)
{
    /*
     * This is a REX prefix in 64-bit mode.
     */
    if (IEM_IS_64BIT_CODE(pVCpu))
    {
        IEMOP_HLP_CLEAR_REX_NOT_BEFORE_OPCODE("rex");
        pVCpu->iem.s.fPrefixes |= IEM_OP_PRF_REX;

        uint8_t b; IEM_OPCODE_GET_NEXT_U8(&b);
        return FNIEMOP_CALL(g_apfnOneByteMap[b]);
    }

    IEMOP_MNEMONIC(inc_eAX, "inc eAX");
    IEMOP_BODY_UNARY_GReg(iemAImpl_inc_u16, iemAImpl_inc_u32, X86_GREG_xAX);
}


/**
 * @opcode      0x41
 * @opflclass   incdec
 */
FNIEMOP_DEF(iemOp_inc_eCX)
{
    /*
     * This is a REX prefix in 64-bit mode.
     */
    if (IEM_IS_64BIT_CODE(pVCpu))
    {
        IEMOP_HLP_CLEAR_REX_NOT_BEFORE_OPCODE("rex.b");
        pVCpu->iem.s.fPrefixes |= IEM_OP_PRF_REX | IEM_OP_PRF_REX_B;
        pVCpu->iem.s.uRexB     = 1 << 3;

        uint8_t b; IEM_OPCODE_GET_NEXT_U8(&b);
        return FNIEMOP_CALL(g_apfnOneByteMap[b]);
    }

    IEMOP_MNEMONIC(inc_eCX, "inc eCX");
    IEMOP_BODY_UNARY_GReg(iemAImpl_inc_u16, iemAImpl_inc_u32, X86_GREG_xCX);
}


/**
 * @opcode      0x42
 * @opflclass   incdec
 */
FNIEMOP_DEF(iemOp_inc_eDX)
{
    /*
     * This is a REX prefix in 64-bit mode.
     */
    if (IEM_IS_64BIT_CODE(pVCpu))
    {
        IEMOP_HLP_CLEAR_REX_NOT_BEFORE_OPCODE("rex.x");
        pVCpu->iem.s.fPrefixes |= IEM_OP_PRF_REX | IEM_OP_PRF_REX_X;
        pVCpu->iem.s.uRexIndex = 1 << 3;

        uint8_t b; IEM_OPCODE_GET_NEXT_U8(&b);
        return FNIEMOP_CALL(g_apfnOneByteMap[b]);
    }

    IEMOP_MNEMONIC(inc_eDX, "inc eDX");
    IEMOP_BODY_UNARY_GReg(iemAImpl_inc_u16, iemAImpl_inc_u32, X86_GREG_xDX);
}



/**
 * @opcode      0x43
 * @opflclass   incdec
 */
FNIEMOP_DEF(iemOp_inc_eBX)
{
    /*
     * This is a REX prefix in 64-bit mode.
     */
    if (IEM_IS_64BIT_CODE(pVCpu))
    {
        IEMOP_HLP_CLEAR_REX_NOT_BEFORE_OPCODE("rex.bx");
        pVCpu->iem.s.fPrefixes |= IEM_OP_PRF_REX | IEM_OP_PRF_REX_B | IEM_OP_PRF_REX_X;
        pVCpu->iem.s.uRexB     = 1 << 3;
        pVCpu->iem.s.uRexIndex = 1 << 3;

        uint8_t b; IEM_OPCODE_GET_NEXT_U8(&b);
        return FNIEMOP_CALL(g_apfnOneByteMap[b]);
    }

    IEMOP_MNEMONIC(inc_eBX, "inc eBX");
    IEMOP_BODY_UNARY_GReg(iemAImpl_inc_u16, iemAImpl_inc_u32, X86_GREG_xBX);
}


/**
 * @opcode      0x44
 * @opflclass   incdec
 */
FNIEMOP_DEF(iemOp_inc_eSP)
{
    /*
     * This is a REX prefix in 64-bit mode.
     */
    if (IEM_IS_64BIT_CODE(pVCpu))
    {
        IEMOP_HLP_CLEAR_REX_NOT_BEFORE_OPCODE("rex.r");
        pVCpu->iem.s.fPrefixes |= IEM_OP_PRF_REX | IEM_OP_PRF_REX_R;
        pVCpu->iem.s.uRexReg   = 1 << 3;

        uint8_t b; IEM_OPCODE_GET_NEXT_U8(&b);
        return FNIEMOP_CALL(g_apfnOneByteMap[b]);
    }

    IEMOP_MNEMONIC(inc_eSP, "inc eSP");
    IEMOP_BODY_UNARY_GReg(iemAImpl_inc_u16, iemAImpl_inc_u32, X86_GREG_xSP);
}


/**
 * @opcode      0x45
 * @opflclass   incdec
 */
FNIEMOP_DEF(iemOp_inc_eBP)
{
    /*
     * This is a REX prefix in 64-bit mode.
     */
    if (IEM_IS_64BIT_CODE(pVCpu))
    {
        IEMOP_HLP_CLEAR_REX_NOT_BEFORE_OPCODE("rex.rb");
        pVCpu->iem.s.fPrefixes |= IEM_OP_PRF_REX | IEM_OP_PRF_REX_R | IEM_OP_PRF_REX_B;
        pVCpu->iem.s.uRexReg   = 1 << 3;
        pVCpu->iem.s.uRexB     = 1 << 3;

        uint8_t b; IEM_OPCODE_GET_NEXT_U8(&b);
        return FNIEMOP_CALL(g_apfnOneByteMap[b]);
    }

    IEMOP_MNEMONIC(inc_eBP, "inc eBP");
    IEMOP_BODY_UNARY_GReg(iemAImpl_inc_u16, iemAImpl_inc_u32, X86_GREG_xBP);
}


/**
 * @opcode      0x46
 * @opflclass   incdec
 */
FNIEMOP_DEF(iemOp_inc_eSI)
{
    /*
     * This is a REX prefix in 64-bit mode.
     */
    if (IEM_IS_64BIT_CODE(pVCpu))
    {
        IEMOP_HLP_CLEAR_REX_NOT_BEFORE_OPCODE("rex.rx");
        pVCpu->iem.s.fPrefixes |= IEM_OP_PRF_REX | IEM_OP_PRF_REX_R | IEM_OP_PRF_REX_X;
        pVCpu->iem.s.uRexReg   = 1 << 3;
        pVCpu->iem.s.uRexIndex = 1 << 3;

        uint8_t b; IEM_OPCODE_GET_NEXT_U8(&b);
        return FNIEMOP_CALL(g_apfnOneByteMap[b]);
    }

    IEMOP_MNEMONIC(inc_eSI, "inc eSI");
    IEMOP_BODY_UNARY_GReg(iemAImpl_inc_u16, iemAImpl_inc_u32, X86_GREG_xSI);
}


/**
 * @opcode      0x47
 * @opflclass   incdec
 */
FNIEMOP_DEF(iemOp_inc_eDI)
{
    /*
     * This is a REX prefix in 64-bit mode.
     */
    if (IEM_IS_64BIT_CODE(pVCpu))
    {
        IEMOP_HLP_CLEAR_REX_NOT_BEFORE_OPCODE("rex.rbx");
        pVCpu->iem.s.fPrefixes |= IEM_OP_PRF_REX | IEM_OP_PRF_REX_R | IEM_OP_PRF_REX_B | IEM_OP_PRF_REX_X;
        pVCpu->iem.s.uRexReg   = 1 << 3;
        pVCpu->iem.s.uRexB     = 1 << 3;
        pVCpu->iem.s.uRexIndex = 1 << 3;

        uint8_t b; IEM_OPCODE_GET_NEXT_U8(&b);
        return FNIEMOP_CALL(g_apfnOneByteMap[b]);
    }

    IEMOP_MNEMONIC(inc_eDI, "inc eDI");
    IEMOP_BODY_UNARY_GReg(iemAImpl_inc_u16, iemAImpl_inc_u32, X86_GREG_xDI);
}


/**
 * @opcode      0x48
 * @opflclass   incdec
 */
FNIEMOP_DEF(iemOp_dec_eAX)
{
    /*
     * This is a REX prefix in 64-bit mode.
     */
    if (IEM_IS_64BIT_CODE(pVCpu))
    {
        IEMOP_HLP_CLEAR_REX_NOT_BEFORE_OPCODE("rex.w");
        pVCpu->iem.s.fPrefixes |= IEM_OP_PRF_REX | IEM_OP_PRF_SIZE_REX_W;
        iemRecalEffOpSize(pVCpu);

        uint8_t b; IEM_OPCODE_GET_NEXT_U8(&b);
        return FNIEMOP_CALL(g_apfnOneByteMap[b]);
    }

    IEMOP_MNEMONIC(dec_eAX, "dec eAX");
    IEMOP_BODY_UNARY_GReg(iemAImpl_dec_u16, iemAImpl_dec_u32, X86_GREG_xAX);
}


/**
 * @opcode      0x49
 * @opflclass   incdec
 */
FNIEMOP_DEF(iemOp_dec_eCX)
{
    /*
     * This is a REX prefix in 64-bit mode.
     */
    if (IEM_IS_64BIT_CODE(pVCpu))
    {
        IEMOP_HLP_CLEAR_REX_NOT_BEFORE_OPCODE("rex.bw");
        pVCpu->iem.s.fPrefixes |= IEM_OP_PRF_REX | IEM_OP_PRF_REX_B | IEM_OP_PRF_SIZE_REX_W;
        pVCpu->iem.s.uRexB     = 1 << 3;
        iemRecalEffOpSize(pVCpu);

        uint8_t b; IEM_OPCODE_GET_NEXT_U8(&b);
        return FNIEMOP_CALL(g_apfnOneByteMap[b]);
    }

    IEMOP_MNEMONIC(dec_eCX, "dec eCX");
    IEMOP_BODY_UNARY_GReg(iemAImpl_dec_u16, iemAImpl_dec_u32, X86_GREG_xCX);
}


/**
 * @opcode      0x4a
 * @opflclass   incdec
 */
FNIEMOP_DEF(iemOp_dec_eDX)
{
    /*
     * This is a REX prefix in 64-bit mode.
     */
    if (IEM_IS_64BIT_CODE(pVCpu))
    {
        IEMOP_HLP_CLEAR_REX_NOT_BEFORE_OPCODE("rex.xw");
        pVCpu->iem.s.fPrefixes |= IEM_OP_PRF_REX | IEM_OP_PRF_REX_X | IEM_OP_PRF_SIZE_REX_W;
        pVCpu->iem.s.uRexIndex = 1 << 3;
        iemRecalEffOpSize(pVCpu);

        uint8_t b; IEM_OPCODE_GET_NEXT_U8(&b);
        return FNIEMOP_CALL(g_apfnOneByteMap[b]);
    }

    IEMOP_MNEMONIC(dec_eDX, "dec eDX");
    IEMOP_BODY_UNARY_GReg(iemAImpl_dec_u16, iemAImpl_dec_u32, X86_GREG_xDX);
}


/**
 * @opcode      0x4b
 * @opflclass   incdec
 */
FNIEMOP_DEF(iemOp_dec_eBX)
{
    /*
     * This is a REX prefix in 64-bit mode.
     */
    if (IEM_IS_64BIT_CODE(pVCpu))
    {
        IEMOP_HLP_CLEAR_REX_NOT_BEFORE_OPCODE("rex.bxw");
        pVCpu->iem.s.fPrefixes |= IEM_OP_PRF_REX | IEM_OP_PRF_REX_B | IEM_OP_PRF_REX_X | IEM_OP_PRF_SIZE_REX_W;
        pVCpu->iem.s.uRexB     = 1 << 3;
        pVCpu->iem.s.uRexIndex = 1 << 3;
        iemRecalEffOpSize(pVCpu);

        uint8_t b; IEM_OPCODE_GET_NEXT_U8(&b);
        return FNIEMOP_CALL(g_apfnOneByteMap[b]);
    }

    IEMOP_MNEMONIC(dec_eBX, "dec eBX");
    IEMOP_BODY_UNARY_GReg(iemAImpl_dec_u16, iemAImpl_dec_u32, X86_GREG_xBX);
}


/**
 * @opcode      0x4c
 * @opflclass   incdec
 */
FNIEMOP_DEF(iemOp_dec_eSP)
{
    /*
     * This is a REX prefix in 64-bit mode.
     */
    if (IEM_IS_64BIT_CODE(pVCpu))
    {
        IEMOP_HLP_CLEAR_REX_NOT_BEFORE_OPCODE("rex.rw");
        pVCpu->iem.s.fPrefixes |= IEM_OP_PRF_REX | IEM_OP_PRF_REX_R | IEM_OP_PRF_SIZE_REX_W;
        pVCpu->iem.s.uRexReg   = 1 << 3;
        iemRecalEffOpSize(pVCpu);

        uint8_t b; IEM_OPCODE_GET_NEXT_U8(&b);
        return FNIEMOP_CALL(g_apfnOneByteMap[b]);
    }

    IEMOP_MNEMONIC(dec_eSP, "dec eSP");
    IEMOP_BODY_UNARY_GReg(iemAImpl_dec_u16, iemAImpl_dec_u32, X86_GREG_xSP);
}


/**
 * @opcode      0x4d
 * @opflclass   incdec
 */
FNIEMOP_DEF(iemOp_dec_eBP)
{
    /*
     * This is a REX prefix in 64-bit mode.
     */
    if (IEM_IS_64BIT_CODE(pVCpu))
    {
        IEMOP_HLP_CLEAR_REX_NOT_BEFORE_OPCODE("rex.rbw");
        pVCpu->iem.s.fPrefixes |= IEM_OP_PRF_REX | IEM_OP_PRF_REX_R | IEM_OP_PRF_REX_B | IEM_OP_PRF_SIZE_REX_W;
        pVCpu->iem.s.uRexReg   = 1 << 3;
        pVCpu->iem.s.uRexB     = 1 << 3;
        iemRecalEffOpSize(pVCpu);

        uint8_t b; IEM_OPCODE_GET_NEXT_U8(&b);
        return FNIEMOP_CALL(g_apfnOneByteMap[b]);
    }

    IEMOP_MNEMONIC(dec_eBP, "dec eBP");
    IEMOP_BODY_UNARY_GReg(iemAImpl_dec_u16, iemAImpl_dec_u32, X86_GREG_xBP);
}


/**
 * @opcode      0x4e
 * @opflclass   incdec
 */
FNIEMOP_DEF(iemOp_dec_eSI)
{
    /*
     * This is a REX prefix in 64-bit mode.
     */
    if (IEM_IS_64BIT_CODE(pVCpu))
    {
        IEMOP_HLP_CLEAR_REX_NOT_BEFORE_OPCODE("rex.rxw");
        pVCpu->iem.s.fPrefixes |= IEM_OP_PRF_REX | IEM_OP_PRF_REX_R | IEM_OP_PRF_REX_X | IEM_OP_PRF_SIZE_REX_W;
        pVCpu->iem.s.uRexReg   = 1 << 3;
        pVCpu->iem.s.uRexIndex = 1 << 3;
        iemRecalEffOpSize(pVCpu);

        uint8_t b; IEM_OPCODE_GET_NEXT_U8(&b);
        return FNIEMOP_CALL(g_apfnOneByteMap[b]);
    }

    IEMOP_MNEMONIC(dec_eSI, "dec eSI");
    IEMOP_BODY_UNARY_GReg(iemAImpl_dec_u16, iemAImpl_dec_u32, X86_GREG_xSI);
}


/**
 * @opcode      0x4f
 * @opflclass   incdec
 */
FNIEMOP_DEF(iemOp_dec_eDI)
{
    /*
     * This is a REX prefix in 64-bit mode.
     */
    if (IEM_IS_64BIT_CODE(pVCpu))
    {
        IEMOP_HLP_CLEAR_REX_NOT_BEFORE_OPCODE("rex.rbxw");
        pVCpu->iem.s.fPrefixes |= IEM_OP_PRF_REX | IEM_OP_PRF_REX_R | IEM_OP_PRF_REX_B | IEM_OP_PRF_REX_X | IEM_OP_PRF_SIZE_REX_W;
        pVCpu->iem.s.uRexReg   = 1 << 3;
        pVCpu->iem.s.uRexB     = 1 << 3;
        pVCpu->iem.s.uRexIndex = 1 << 3;
        iemRecalEffOpSize(pVCpu);

        uint8_t b; IEM_OPCODE_GET_NEXT_U8(&b);
        return FNIEMOP_CALL(g_apfnOneByteMap[b]);
    }

    IEMOP_MNEMONIC(dec_eDI, "dec eDI");
    IEMOP_BODY_UNARY_GReg(iemAImpl_dec_u16, iemAImpl_dec_u32, X86_GREG_xDI);
}


/**
 * Common 'push register' helper.
 */
FNIEMOP_DEF_1(iemOpCommonPushGReg, uint8_t, iReg)
{
    if (IEM_IS_64BIT_CODE(pVCpu))
    {
        iReg |= pVCpu->iem.s.uRexB;
        pVCpu->iem.s.enmDefOpSize = IEMMODE_64BIT;
        pVCpu->iem.s.enmEffOpSize = !(pVCpu->iem.s.fPrefixes & IEM_OP_PRF_SIZE_OP) ? IEMMODE_64BIT : IEMMODE_16BIT;
    }

    switch (pVCpu->iem.s.enmEffOpSize)
    {
        case IEMMODE_16BIT:
            IEM_MC_BEGIN(0, 0);
            IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
            IEM_MC_LOCAL(uint16_t, u16Value);
            IEM_MC_FETCH_GREG_U16(u16Value, iReg);
            IEM_MC_PUSH_U16(u16Value);
            IEM_MC_ADVANCE_RIP_AND_FINISH();
            IEM_MC_END();
            break;

        case IEMMODE_32BIT:
            IEM_MC_BEGIN(IEM_MC_F_MIN_386 | IEM_MC_F_NOT_64BIT, 0);
            IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
            IEM_MC_LOCAL(uint32_t, u32Value);
            IEM_MC_FETCH_GREG_U32(u32Value, iReg);
            IEM_MC_PUSH_U32(u32Value);
            IEM_MC_ADVANCE_RIP_AND_FINISH();
            IEM_MC_END();
            break;

        case IEMMODE_64BIT:
            IEM_MC_BEGIN(IEM_MC_F_64BIT, 0);
            IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
            IEM_MC_LOCAL(uint64_t, u64Value);
            IEM_MC_FETCH_GREG_U64(u64Value, iReg);
            IEM_MC_PUSH_U64(u64Value);
            IEM_MC_ADVANCE_RIP_AND_FINISH();
            IEM_MC_END();
            break;

        IEM_NOT_REACHED_DEFAULT_CASE_RET();
    }
}


/**
 * @opcode      0x50
 */
FNIEMOP_DEF(iemOp_push_eAX)
{
    IEMOP_MNEMONIC(push_rAX, "push rAX");
    return FNIEMOP_CALL_1(iemOpCommonPushGReg, X86_GREG_xAX);
}


/**
 * @opcode      0x51
 */
FNIEMOP_DEF(iemOp_push_eCX)
{
    IEMOP_MNEMONIC(push_rCX, "push rCX");
    return FNIEMOP_CALL_1(iemOpCommonPushGReg, X86_GREG_xCX);
}


/**
 * @opcode      0x52
 */
FNIEMOP_DEF(iemOp_push_eDX)
{
    IEMOP_MNEMONIC(push_rDX, "push rDX");
    return FNIEMOP_CALL_1(iemOpCommonPushGReg, X86_GREG_xDX);
}


/**
 * @opcode      0x53
 */
FNIEMOP_DEF(iemOp_push_eBX)
{
    IEMOP_MNEMONIC(push_rBX, "push rBX");
    return FNIEMOP_CALL_1(iemOpCommonPushGReg, X86_GREG_xBX);
}


/**
 * @opcode      0x54
 */
FNIEMOP_DEF(iemOp_push_eSP)
{
    IEMOP_MNEMONIC(push_rSP, "push rSP");
    if (IEM_GET_TARGET_CPU(pVCpu) != IEMTARGETCPU_8086)
        return FNIEMOP_CALL_1(iemOpCommonPushGReg, X86_GREG_xSP);

    /* 8086 works differently wrt to 'push sp' compared to 80186 and later. */
    IEM_MC_BEGIN(IEM_MC_F_ONLY_8086, 0);
    IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
    IEM_MC_LOCAL(uint16_t, u16Value);
    IEM_MC_FETCH_GREG_U16(u16Value, X86_GREG_xSP);
    IEM_MC_SUB_LOCAL_U16(u16Value, 2);
    IEM_MC_PUSH_U16(u16Value);
    IEM_MC_ADVANCE_RIP_AND_FINISH();
    IEM_MC_END();
}


/**
 * @opcode      0x55
 */
FNIEMOP_DEF(iemOp_push_eBP)
{
    IEMOP_MNEMONIC(push_rBP, "push rBP");
    return FNIEMOP_CALL_1(iemOpCommonPushGReg, X86_GREG_xBP);
}


/**
 * @opcode      0x56
 */
FNIEMOP_DEF(iemOp_push_eSI)
{
    IEMOP_MNEMONIC(push_rSI, "push rSI");
    return FNIEMOP_CALL_1(iemOpCommonPushGReg, X86_GREG_xSI);
}


/**
 * @opcode      0x57
 */
FNIEMOP_DEF(iemOp_push_eDI)
{
    IEMOP_MNEMONIC(push_rDI, "push rDI");
    return FNIEMOP_CALL_1(iemOpCommonPushGReg, X86_GREG_xDI);
}


/**
 * Common 'pop register' helper.
 */
FNIEMOP_DEF_1(iemOpCommonPopGReg, uint8_t, iReg)
{
    if (IEM_IS_64BIT_CODE(pVCpu))
    {
        iReg |= pVCpu->iem.s.uRexB;
        pVCpu->iem.s.enmDefOpSize = IEMMODE_64BIT;
        pVCpu->iem.s.enmEffOpSize = !(pVCpu->iem.s.fPrefixes & IEM_OP_PRF_SIZE_OP) ? IEMMODE_64BIT : IEMMODE_16BIT;
    }

    switch (pVCpu->iem.s.enmEffOpSize)
    {
        case IEMMODE_16BIT:
            IEM_MC_BEGIN(0, 0);
            IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
            IEM_MC_POP_GREG_U16(iReg);
            IEM_MC_ADVANCE_RIP_AND_FINISH();
            IEM_MC_END();
            break;

        case IEMMODE_32BIT:
            IEM_MC_BEGIN(IEM_MC_F_MIN_386 | IEM_MC_F_NOT_64BIT, 0);
            IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
            IEM_MC_POP_GREG_U32(iReg);
            IEM_MC_ADVANCE_RIP_AND_FINISH();
            IEM_MC_END();
            break;

        case IEMMODE_64BIT:
            IEM_MC_BEGIN(IEM_MC_F_64BIT, 0);
            IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
            IEM_MC_POP_GREG_U64(iReg);
            IEM_MC_ADVANCE_RIP_AND_FINISH();
            IEM_MC_END();
            break;

        IEM_NOT_REACHED_DEFAULT_CASE_RET();
    }
}


/**
 * @opcode      0x58
 */
FNIEMOP_DEF(iemOp_pop_eAX)
{
    IEMOP_MNEMONIC(pop_rAX, "pop rAX");
    return FNIEMOP_CALL_1(iemOpCommonPopGReg, X86_GREG_xAX);
}


/**
 * @opcode      0x59
 */
FNIEMOP_DEF(iemOp_pop_eCX)
{
    IEMOP_MNEMONIC(pop_rCX, "pop rCX");
    return FNIEMOP_CALL_1(iemOpCommonPopGReg, X86_GREG_xCX);
}


/**
 * @opcode      0x5a
 */
FNIEMOP_DEF(iemOp_pop_eDX)
{
    IEMOP_MNEMONIC(pop_rDX, "pop rDX");
    return FNIEMOP_CALL_1(iemOpCommonPopGReg, X86_GREG_xDX);
}


/**
 * @opcode      0x5b
 */
FNIEMOP_DEF(iemOp_pop_eBX)
{
    IEMOP_MNEMONIC(pop_rBX, "pop rBX");
    return FNIEMOP_CALL_1(iemOpCommonPopGReg, X86_GREG_xBX);
}


/**
 * @opcode      0x5c
 */
FNIEMOP_DEF(iemOp_pop_eSP)
{
    IEMOP_MNEMONIC(pop_rSP, "pop rSP");
    return FNIEMOP_CALL_1(iemOpCommonPopGReg, X86_GREG_xSP);
}


/**
 * @opcode      0x5d
 */
FNIEMOP_DEF(iemOp_pop_eBP)
{
    IEMOP_MNEMONIC(pop_rBP, "pop rBP");
    return FNIEMOP_CALL_1(iemOpCommonPopGReg, X86_GREG_xBP);
}


/**
 * @opcode      0x5e
 */
FNIEMOP_DEF(iemOp_pop_eSI)
{
    IEMOP_MNEMONIC(pop_rSI, "pop rSI");
    return FNIEMOP_CALL_1(iemOpCommonPopGReg, X86_GREG_xSI);
}


/**
 * @opcode      0x5f
 */
FNIEMOP_DEF(iemOp_pop_eDI)
{
    IEMOP_MNEMONIC(pop_rDI, "pop rDI");
    return FNIEMOP_CALL_1(iemOpCommonPopGReg, X86_GREG_xDI);
}


/**
 * @opcode      0x60
 */
FNIEMOP_DEF(iemOp_pusha)
{
    IEMOP_MNEMONIC(pusha, "pusha");
    IEMOP_HLP_MIN_186();
    IEMOP_HLP_NO_64BIT();
    if (pVCpu->iem.s.enmEffOpSize == IEMMODE_16BIT)
        IEM_MC_DEFER_TO_CIMPL_0_RET(0, RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xSP), iemCImpl_pusha_16);
    Assert(pVCpu->iem.s.enmEffOpSize == IEMMODE_32BIT);
    IEM_MC_DEFER_TO_CIMPL_0_RET(0, RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xSP), iemCImpl_pusha_32);
}


/**
 * @opcode      0x61
 */
FNIEMOP_DEF(iemOp_popa__mvex)
{
    if (!IEM_IS_64BIT_CODE(pVCpu))
    {
        IEMOP_MNEMONIC(popa, "popa");
        IEMOP_HLP_MIN_186();
        IEMOP_HLP_NO_64BIT();
        if (pVCpu->iem.s.enmEffOpSize == IEMMODE_16BIT)
            IEM_MC_DEFER_TO_CIMPL_0_RET(0,
                                          RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xAX)
                                        | RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xCX)
                                        | RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xDX)
                                        | RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xBX)
                                        | RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xSP)
                                        | RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xBP)
                                        | RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xSI)
                                        | RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xDI),
                                        iemCImpl_popa_16);
        Assert(pVCpu->iem.s.enmEffOpSize == IEMMODE_32BIT);
        IEM_MC_DEFER_TO_CIMPL_0_RET(0,
                                      RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xAX)
                                    | RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xCX)
                                    | RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xDX)
                                    | RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xBX)
                                    | RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xSP)
                                    | RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xBP)
                                    | RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xSI)
                                    | RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xDI),
                                    iemCImpl_popa_32);
    }
    IEMOP_MNEMONIC(mvex, "mvex");
    Log(("mvex prefix is not supported!\n"));
    IEMOP_RAISE_INVALID_OPCODE_RET();
}


/**
 * @opcode      0x62
 * @opmnemonic  bound
 * @op1         Gv_RO
 * @op2         Ma
 * @opmincpu    80186
 * @ophints     harmless x86_invalid_64
 * @optest      op1=0 op2=0 ->
 * @optest      op1=1 op2=0 -> value.xcpt=5
 * @optest      o16 / op1=0xffff op2=0x0000fffe ->
 * @optest      o16 / op1=0xfffe op2=0x0000fffe ->
 * @optest      o16 / op1=0x7fff op2=0x0000fffe -> value.xcpt=5
 * @optest      o16 / op1=0x7fff op2=0x7ffffffe ->
 * @optest      o16 / op1=0x7fff op2=0xfffe8000 -> value.xcpt=5
 * @optest      o16 / op1=0x8000 op2=0xfffe8000 ->
 * @optest      o16 / op1=0xffff op2=0xfffe8000 -> value.xcpt=5
 * @optest      o16 / op1=0xfffe op2=0xfffe8000 ->
 * @optest      o16 / op1=0xfffe op2=0x8000fffe -> value.xcpt=5
 * @optest      o16 / op1=0x8000 op2=0x8000fffe -> value.xcpt=5
 * @optest      o16 / op1=0x0000 op2=0x8000fffe -> value.xcpt=5
 * @optest      o16 / op1=0x0001 op2=0x8000fffe -> value.xcpt=5
 * @optest      o16 / op1=0xffff op2=0x0001000f -> value.xcpt=5
 * @optest      o16 / op1=0x0000 op2=0x0001000f -> value.xcpt=5
 * @optest      o16 / op1=0x0001 op2=0x0001000f -> value.xcpt=5
 * @optest      o16 / op1=0x0002 op2=0x0001000f -> value.xcpt=5
 * @optest      o16 / op1=0x0003 op2=0x0001000f -> value.xcpt=5
 * @optest      o16 / op1=0x0004 op2=0x0001000f -> value.xcpt=5
 * @optest      o16 / op1=0x000e op2=0x0001000f -> value.xcpt=5
 * @optest      o16 / op1=0x000f op2=0x0001000f -> value.xcpt=5
 * @optest      o16 / op1=0x0010 op2=0x0001000f -> value.xcpt=5
 * @optest      o16 / op1=0x0011 op2=0x0001000f -> value.xcpt=5
 * @optest      o32 / op1=0xffffffff op2=0x00000000fffffffe ->
 * @optest      o32 / op1=0xfffffffe op2=0x00000000fffffffe ->
 * @optest      o32 / op1=0x7fffffff op2=0x00000000fffffffe -> value.xcpt=5
 * @optest      o32 / op1=0x7fffffff op2=0x7ffffffffffffffe ->
 * @optest      o32 / op1=0x7fffffff op2=0xfffffffe80000000 -> value.xcpt=5
 * @optest      o32 / op1=0x80000000 op2=0xfffffffe80000000 ->
 * @optest      o32 / op1=0xffffffff op2=0xfffffffe80000000 -> value.xcpt=5
 * @optest      o32 / op1=0xfffffffe op2=0xfffffffe80000000 ->
 * @optest      o32 / op1=0xfffffffe op2=0x80000000fffffffe -> value.xcpt=5
 * @optest      o32 / op1=0x80000000 op2=0x80000000fffffffe -> value.xcpt=5
 * @optest      o32 / op1=0x00000000 op2=0x80000000fffffffe -> value.xcpt=5
 * @optest      o32 / op1=0x00000002 op2=0x80000000fffffffe -> value.xcpt=5
 * @optest      o32 / op1=0x00000001 op2=0x0000000100000003 -> value.xcpt=5
 * @optest      o32 / op1=0x00000002 op2=0x0000000100000003 -> value.xcpt=5
 * @optest      o32 / op1=0x00000003 op2=0x0000000100000003 -> value.xcpt=5
 * @optest      o32 / op1=0x00000004 op2=0x0000000100000003 -> value.xcpt=5
 * @optest      o32 / op1=0x00000005 op2=0x0000000100000003 -> value.xcpt=5
 * @optest      o32 / op1=0x0000000e op2=0x0000000100000003 -> value.xcpt=5
 * @optest      o32 / op1=0x0000000f op2=0x0000000100000003 -> value.xcpt=5
 * @optest      o32 / op1=0x00000010 op2=0x0000000100000003 -> value.xcpt=5
 */
FNIEMOP_DEF(iemOp_bound_Gv_Ma__evex)
{
    /* The BOUND instruction is invalid 64-bit mode. In legacy and
       compatability mode it is invalid with MOD=3.

       In 32-bit mode, the EVEX prefix works by having the top two bits (MOD)
       both be set.  In the Intel EVEX documentation (sdm vol 2) these are simply
       given as R and X without an exact description, so we assume it builds on
       the VEX one and means they are inverted wrt REX.R and REX.X.  Thus, just
       like with the 3-byte VEX, 32-bit code is restrict wrt addressable registers. */
    uint8_t bRm;
    if (!IEM_IS_64BIT_CODE(pVCpu))
    {
        IEMOP_MNEMONIC2(RM_MEM, BOUND, bound, Gv_RO, Ma, DISOPTYPE_HARMLESS, IEMOPHINT_IGNORES_OP_SIZES);
        IEMOP_HLP_MIN_186();
        IEM_OPCODE_GET_NEXT_U8(&bRm);
        if (IEM_IS_MODRM_MEM_MODE(bRm))
        {
            /** @todo testcase: check that there are two memory accesses involved.  Check
             *        whether they're both read before the \#BR triggers. */
            if (pVCpu->iem.s.enmEffOpSize == IEMMODE_16BIT)
            {
                IEM_MC_BEGIN(IEM_MC_F_MIN_186 | IEM_MC_F_NOT_64BIT, 0);
                IEM_MC_ARG(uint16_t,    u16Index,       0); /* Note! All operands are actually signed. Lazy unsigned bird. */
                IEM_MC_ARG(uint16_t,    u16LowerBounds, 1);
                IEM_MC_ARG(uint16_t,    u16UpperBounds, 2);
                IEM_MC_LOCAL(RTGCPTR,   GCPtrEffSrc);

                IEM_MC_CALC_RM_EFF_ADDR(GCPtrEffSrc, bRm, 0);
                IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();

                IEM_MC_FETCH_GREG_U16(u16Index, IEM_GET_MODRM_REG_8(bRm));
                IEM_MC_FETCH_MEM_U16(u16LowerBounds, pVCpu->iem.s.iEffSeg, GCPtrEffSrc);
                IEM_MC_FETCH_MEM_U16_DISP(u16UpperBounds, pVCpu->iem.s.iEffSeg, GCPtrEffSrc, 2);

                IEM_MC_CALL_CIMPL_3(0, 0, iemCImpl_bound_16, u16Index, u16LowerBounds, u16UpperBounds); /* returns */
                IEM_MC_END();
            }
            else /* 32-bit operands */
            {
                IEM_MC_BEGIN(IEM_MC_F_MIN_386 | IEM_MC_F_NOT_64BIT, 0);
                IEM_MC_ARG(uint32_t,    u32Index,       0); /* Note! All operands are actually signed. Lazy unsigned bird. */
                IEM_MC_ARG(uint32_t,    u32LowerBounds, 1);
                IEM_MC_ARG(uint32_t,    u32UpperBounds, 2);
                IEM_MC_LOCAL(RTGCPTR,   GCPtrEffSrc);

                IEM_MC_CALC_RM_EFF_ADDR(GCPtrEffSrc, bRm, 0);
                IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();

                IEM_MC_FETCH_GREG_U32(u32Index, IEM_GET_MODRM_REG_8(bRm));
                IEM_MC_FETCH_MEM_U32(u32LowerBounds, pVCpu->iem.s.iEffSeg, GCPtrEffSrc);
                IEM_MC_FETCH_MEM_U32_DISP(u32UpperBounds, pVCpu->iem.s.iEffSeg, GCPtrEffSrc, 4);

                IEM_MC_CALL_CIMPL_3(0, 0, iemCImpl_bound_32, u32Index, u32LowerBounds, u32UpperBounds); /* returns */
                IEM_MC_END();
            }
        }

        /*
         * @opdone
         */
        if (!IEM_GET_GUEST_CPU_FEATURES(pVCpu)->fAvx512Foundation)
        {
            /* Note that there is no need for the CPU to fetch further bytes
               here because MODRM.MOD == 3. */
            Log(("evex not supported by the guest CPU!\n"));
            IEMOP_RAISE_INVALID_OPCODE_RET();
        }
    }
    else
    {
        /** @todo check how this is decoded in 64-bit mode w/o EVEX. Intel probably
         *        does modr/m read, whereas AMD probably doesn't... */
        if (!IEM_GET_GUEST_CPU_FEATURES(pVCpu)->fAvx512Foundation)
        {
            Log(("evex not supported by the guest CPU!\n"));
            return FNIEMOP_CALL(iemOp_InvalidAllNeedRM);
        }
        IEM_OPCODE_GET_NEXT_U8(&bRm);
    }

    IEMOP_MNEMONIC(evex, "evex");
    uint8_t bP2; IEM_OPCODE_GET_NEXT_U8(&bP2);
    uint8_t bP3; IEM_OPCODE_GET_NEXT_U8(&bP3);
    Log(("evex prefix is not implemented!\n"));
    return VERR_IEM_INSTR_NOT_IMPLEMENTED;
}


/**
 * @opcode      0x63
 * @opflmodify  zf
 * @note        non-64-bit modes.
 */
FNIEMOP_DEF(iemOp_arpl_Ew_Gw)
{
    IEMOP_MNEMONIC(arpl_Ew_Gw, "arpl Ew,Gw");
    IEMOP_HLP_MIN_286();
    IEMOP_HLP_NO_REAL_OR_V86_MODE();
    uint8_t bRm; IEM_OPCODE_GET_NEXT_U8(&bRm);

    if (IEM_IS_MODRM_REG_MODE(bRm))
    {
        /* Register */
        IEM_MC_BEGIN(IEM_MC_F_MIN_286 | IEM_MC_F_NOT_64BIT, 0);
        IEMOP_HLP_DECODED_NL_2(OP_ARPL, IEMOPFORM_MR_REG, OP_PARM_Ew, OP_PARM_Gw, DISOPTYPE_HARMLESS);
        IEM_MC_ARG(uint16_t,        u16Src,     2);
        IEM_MC_FETCH_GREG_U16(u16Src, IEM_GET_MODRM_REG_8(bRm));
        IEM_MC_ARG(uint16_t *,      pu16Dst,    1);
        IEM_MC_REF_GREG_U16(pu16Dst,  IEM_GET_MODRM_RM_8(bRm));
        IEM_MC_ARG_EFLAGS(          fEFlagsIn,  0);
        IEM_MC_CALL_AIMPL_3(uint32_t, fEFlagsRet, iemAImpl_arpl, fEFlagsIn, pu16Dst, u16Src);
        IEM_MC_COMMIT_EFLAGS(fEFlagsRet);

        IEM_MC_ADVANCE_RIP_AND_FINISH();
        IEM_MC_END();
    }
    else
    {
        /* Memory */
        IEM_MC_BEGIN(IEM_MC_F_MIN_286 | IEM_MC_F_NOT_64BIT, 0);
        IEM_MC_LOCAL(RTGCPTR, GCPtrEffDst);
        IEM_MC_CALC_RM_EFF_ADDR(GCPtrEffDst, bRm, 0);
        IEMOP_HLP_DECODED_NL_2(OP_ARPL, IEMOPFORM_MR_REG, OP_PARM_Ew, OP_PARM_Gw, DISOPTYPE_HARMLESS);

        IEM_MC_LOCAL(uint8_t,   bUnmapInfo);
        IEM_MC_ARG(uint16_t *,  pu16Dst,    1);
        IEM_MC_MEM_MAP_U16_RW(pu16Dst, bUnmapInfo, pVCpu->iem.s.iEffSeg, GCPtrEffDst);
        IEM_MC_ARG(uint16_t,   u16Src,      2);
        IEM_MC_FETCH_GREG_U16(u16Src, IEM_GET_MODRM_REG_8(bRm));
        IEM_MC_ARG_EFLAGS(      fEFlagsIn,  0);
        IEM_MC_CALL_AIMPL_3(uint32_t, fEFlagsRet, iemAImpl_arpl, fEFlagsIn, pu16Dst, u16Src);

        IEM_MC_MEM_COMMIT_AND_UNMAP_RW(bUnmapInfo);
        IEM_MC_COMMIT_EFLAGS(fEFlagsRet);
        IEM_MC_ADVANCE_RIP_AND_FINISH();
        IEM_MC_END();
    }
}


/**
 * @opcode 0x63
 *
 * @note This is a weird one. It works like a regular move instruction if
 *       REX.W isn't set, at least according to AMD docs (rev 3.15, 2009-11).
 * @todo This definitely needs a testcase to verify the odd cases.  */
FNIEMOP_DEF(iemOp_movsxd_Gv_Ev)
{
    Assert(pVCpu->iem.s.enmEffOpSize == IEMMODE_64BIT); /* Caller branched already . */

    IEMOP_MNEMONIC(movsxd_Gv_Ev, "movsxd Gv,Ev");
    uint8_t bRm; IEM_OPCODE_GET_NEXT_U8(&bRm);

    if (pVCpu->iem.s.fPrefixes & IEM_OP_PRF_SIZE_REX_W)
    {
        if (IEM_IS_MODRM_REG_MODE(bRm))
        {
            /*
             * Register to register.
             */
            IEM_MC_BEGIN(IEM_MC_F_64BIT, 0);
            IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
            IEM_MC_LOCAL(uint64_t, u64Value);
            IEM_MC_FETCH_GREG_U32_SX_U64(u64Value, IEM_GET_MODRM_RM(pVCpu, bRm));
            IEM_MC_STORE_GREG_U64(IEM_GET_MODRM_REG(pVCpu, bRm), u64Value);
            IEM_MC_ADVANCE_RIP_AND_FINISH();
            IEM_MC_END();
        }
        else
        {
            /*
             * We're loading a register from memory.
             */
            IEM_MC_BEGIN(IEM_MC_F_64BIT, 0);
            IEM_MC_LOCAL(uint64_t, u64Value);
            IEM_MC_LOCAL(RTGCPTR, GCPtrEffDst);
            IEM_MC_CALC_RM_EFF_ADDR(GCPtrEffDst, bRm, 0);
            IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
            IEM_MC_FETCH_MEM_U32_SX_U64(u64Value, pVCpu->iem.s.iEffSeg, GCPtrEffDst);
            IEM_MC_STORE_GREG_U64(IEM_GET_MODRM_REG(pVCpu, bRm), u64Value);
            IEM_MC_ADVANCE_RIP_AND_FINISH();
            IEM_MC_END();
        }
    }
    else
        AssertFailedReturn(VERR_IEM_INSTR_NOT_IMPLEMENTED);
}


/**
 * @opcode      0x64
 * @opmnemonic  segfs
 * @opmincpu    80386
 * @opgroup     og_prefixes
 */
FNIEMOP_DEF(iemOp_seg_FS)
{
    IEMOP_HLP_CLEAR_REX_NOT_BEFORE_OPCODE("seg fs");
    IEMOP_HLP_MIN_386();

    pVCpu->iem.s.fPrefixes |= IEM_OP_PRF_SEG_FS;
    pVCpu->iem.s.iEffSeg    = X86_SREG_FS;

    uint8_t b; IEM_OPCODE_GET_NEXT_U8(&b);
    return FNIEMOP_CALL(g_apfnOneByteMap[b]);
}


/**
 * @opcode      0x65
 * @opmnemonic  seggs
 * @opmincpu    80386
 * @opgroup     og_prefixes
 */
FNIEMOP_DEF(iemOp_seg_GS)
{
    IEMOP_HLP_CLEAR_REX_NOT_BEFORE_OPCODE("seg gs");
    IEMOP_HLP_MIN_386();

    pVCpu->iem.s.fPrefixes |= IEM_OP_PRF_SEG_GS;
    pVCpu->iem.s.iEffSeg    = X86_SREG_GS;

    uint8_t b; IEM_OPCODE_GET_NEXT_U8(&b);
    return FNIEMOP_CALL(g_apfnOneByteMap[b]);
}


/**
 * @opcode      0x66
 * @opmnemonic  opsize
 * @openc       prefix
 * @opmincpu    80386
 * @ophints     harmless
 * @opgroup     og_prefixes
 */
FNIEMOP_DEF(iemOp_op_size)
{
    IEMOP_HLP_CLEAR_REX_NOT_BEFORE_OPCODE("op size");
    IEMOP_HLP_MIN_386();

    pVCpu->iem.s.fPrefixes |= IEM_OP_PRF_SIZE_OP;
    iemRecalEffOpSize(pVCpu);

    /* For the 4 entry opcode tables, the operand prefix doesn't not count
       when REPZ or REPNZ are present. */
    if (pVCpu->iem.s.idxPrefix == 0)
        pVCpu->iem.s.idxPrefix = 1;

    uint8_t b; IEM_OPCODE_GET_NEXT_U8(&b);
    return FNIEMOP_CALL(g_apfnOneByteMap[b]);
}


/**
 * @opcode      0x67
 * @opmnemonic  addrsize
 * @openc       prefix
 * @opmincpu    80386
 * @ophints     harmless
 * @opgroup     og_prefixes
 */
FNIEMOP_DEF(iemOp_addr_size)
{
    IEMOP_HLP_CLEAR_REX_NOT_BEFORE_OPCODE("addr size");
    IEMOP_HLP_MIN_386();

    pVCpu->iem.s.fPrefixes |= IEM_OP_PRF_SIZE_ADDR;
    switch (pVCpu->iem.s.enmDefAddrMode)
    {
        case IEMMODE_16BIT: pVCpu->iem.s.enmEffAddrMode = IEMMODE_32BIT; break;
        case IEMMODE_32BIT: pVCpu->iem.s.enmEffAddrMode = IEMMODE_16BIT; break;
        case IEMMODE_64BIT: pVCpu->iem.s.enmEffAddrMode = IEMMODE_32BIT; break;
        default: AssertFailed();
    }

    uint8_t b; IEM_OPCODE_GET_NEXT_U8(&b);
    return FNIEMOP_CALL(g_apfnOneByteMap[b]);
}


/**
 * @opcode      0x68
 */
FNIEMOP_DEF(iemOp_push_Iz)
{
    IEMOP_MNEMONIC(push_Iz, "push Iz");
    IEMOP_HLP_MIN_186();
    IEMOP_HLP_DEFAULT_64BIT_OP_SIZE();
    switch (pVCpu->iem.s.enmEffOpSize)
    {
        case IEMMODE_16BIT:
            IEM_MC_BEGIN(IEM_MC_F_MIN_186, 0);
            uint16_t u16Imm; IEM_OPCODE_GET_NEXT_U16(&u16Imm);
            IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
            IEM_MC_LOCAL_CONST(uint16_t, u16Value, u16Imm);
            IEM_MC_PUSH_U16(u16Value);
            IEM_MC_ADVANCE_RIP_AND_FINISH();
            IEM_MC_END();
            break;

        case IEMMODE_32BIT:
            IEM_MC_BEGIN(IEM_MC_F_MIN_386 | IEM_MC_F_NOT_64BIT, 0);
            uint32_t u32Imm; IEM_OPCODE_GET_NEXT_U32(&u32Imm);
            IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
            IEM_MC_LOCAL_CONST(uint32_t, u32Value, u32Imm);
            IEM_MC_PUSH_U32(u32Value);
            IEM_MC_ADVANCE_RIP_AND_FINISH();
            IEM_MC_END();
            break;

        case IEMMODE_64BIT:
            IEM_MC_BEGIN(IEM_MC_F_64BIT, 0);
            uint64_t u64Imm; IEM_OPCODE_GET_NEXT_S32_SX_U64(&u64Imm);
            IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
            IEM_MC_LOCAL_CONST(uint64_t, u64Value, u64Imm);
            IEM_MC_PUSH_U64(u64Value);
            IEM_MC_ADVANCE_RIP_AND_FINISH();
            IEM_MC_END();
            break;

        IEM_NOT_REACHED_DEFAULT_CASE_RET();
    }
}


/**
 * @opcode      0x69
 * @opflclass   multiply
 */
FNIEMOP_DEF(iemOp_imul_Gv_Ev_Iz)
{
    IEMOP_MNEMONIC(imul_Gv_Ev_Iz, "imul Gv,Ev,Iz"); /* Gv = Ev * Iz; */
    IEMOP_HLP_MIN_186();
    uint8_t bRm; IEM_OPCODE_GET_NEXT_U8(&bRm);
    IEMOP_VERIFICATION_UNDEFINED_EFLAGS(X86_EFL_SF | X86_EFL_ZF | X86_EFL_AF | X86_EFL_PF);

    switch (pVCpu->iem.s.enmEffOpSize)
    {
        case IEMMODE_16BIT:
        {
            PFNIEMAIMPLBINU16 const pfnAImplU16 = IEMTARGETCPU_EFL_BEHAVIOR_SELECT(g_iemAImpl_imul_two_u16_eflags);
            if (IEM_IS_MODRM_REG_MODE(bRm))
            {
                /* register operand */
                uint16_t u16Imm; IEM_OPCODE_GET_NEXT_U16(&u16Imm);
                IEM_MC_BEGIN(IEM_MC_F_MIN_186, 0);
                IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
                IEM_MC_LOCAL(uint16_t,              u16Tmp);
                IEM_MC_FETCH_GREG_U16(u16Tmp, IEM_GET_MODRM_RM(pVCpu, bRm));

                IEM_MC_ARG_LOCAL_REF(uint16_t *,    pu16Dst, u16Tmp,        1);
                IEM_MC_ARG_EFLAGS(                  fEFlagsIn,              0);
                IEM_MC_ARG_CONST(uint16_t,          u16Src,/*=*/ u16Imm,    2);
                IEM_MC_CALL_AIMPL_3(uint32_t, fEFlagsRet, pfnAImplU16, fEFlagsIn, pu16Dst, u16Src);
                IEM_MC_STORE_GREG_U16(IEM_GET_MODRM_REG(pVCpu, bRm), u16Tmp);
                IEM_MC_COMMIT_EFLAGS(fEFlagsRet);

                IEM_MC_ADVANCE_RIP_AND_FINISH();
                IEM_MC_END();
            }
            else
            {
                /* memory operand */
                IEM_MC_BEGIN(IEM_MC_F_MIN_186, 0);
                IEM_MC_LOCAL(RTGCPTR,  GCPtrEffDst);
                IEM_MC_CALC_RM_EFF_ADDR(GCPtrEffDst, bRm, 2);

                uint16_t u16Imm; IEM_OPCODE_GET_NEXT_U16(&u16Imm);
                IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();

                IEM_MC_LOCAL(uint16_t,      u16Tmp);
                IEM_MC_FETCH_MEM_U16(u16Tmp, pVCpu->iem.s.iEffSeg, GCPtrEffDst);

                IEM_MC_ARG_LOCAL_REF(uint16_t *,    pu16Dst,    u16Tmp,     1);
                IEM_MC_ARG_EFLAGS(                  fEFlagsIn,              0);
                IEM_MC_ARG_CONST(uint16_t,          u16Src,     u16Imm,     2);
                IEM_MC_CALL_AIMPL_3(uint32_t, fEFlagsRet, pfnAImplU16, fEFlagsIn, pu16Dst, u16Src);
                IEM_MC_STORE_GREG_U16(IEM_GET_MODRM_REG(pVCpu, bRm), u16Tmp);
                IEM_MC_COMMIT_EFLAGS(fEFlagsRet);

                IEM_MC_ADVANCE_RIP_AND_FINISH();
                IEM_MC_END();
            }
            break;
        }

        case IEMMODE_32BIT:
        {
            PFNIEMAIMPLBINU32 const pfnAImplU32 = IEMTARGETCPU_EFL_BEHAVIOR_SELECT(g_iemAImpl_imul_two_u32_eflags);
            if (IEM_IS_MODRM_REG_MODE(bRm))
            {
                /* register operand */
                uint32_t u32Imm; IEM_OPCODE_GET_NEXT_U32(&u32Imm);
                IEM_MC_BEGIN(IEM_MC_F_MIN_386, 0);
                IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
                IEM_MC_LOCAL(uint32_t,      u32Tmp);
                IEM_MC_FETCH_GREG_U32(u32Tmp, IEM_GET_MODRM_RM(pVCpu, bRm));

                IEM_MC_ARG_LOCAL_REF(uint32_t *,    pu32Dst,     u32Tmp,    1);
                IEM_MC_ARG_EFLAGS(                  fEFlagsIn,              0);
                IEM_MC_ARG_CONST(uint32_t,          u32Src,/*=*/ u32Imm,    2);
                IEM_MC_CALL_AIMPL_3(uint32_t, fEFlagsRet, pfnAImplU32, fEFlagsIn, pu32Dst, u32Src);
                IEM_MC_STORE_GREG_U32(IEM_GET_MODRM_REG(pVCpu, bRm), u32Tmp);
                IEM_MC_COMMIT_EFLAGS(fEFlagsRet);

                IEM_MC_ADVANCE_RIP_AND_FINISH();
                IEM_MC_END();
            }
            else
            {
                /* memory operand */
                IEM_MC_BEGIN(IEM_MC_F_MIN_386, 0);
                IEM_MC_LOCAL(RTGCPTR,  GCPtrEffDst);
                IEM_MC_CALC_RM_EFF_ADDR(GCPtrEffDst, bRm, 4);

                uint32_t u32Imm; IEM_OPCODE_GET_NEXT_U32(&u32Imm);
                IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();

                IEM_MC_LOCAL(uint32_t,      u32Tmp);
                IEM_MC_FETCH_MEM_U32(u32Tmp, pVCpu->iem.s.iEffSeg, GCPtrEffDst);

                IEM_MC_ARG_LOCAL_REF(uint32_t *,    pu32Dst,    u32Tmp,     1);
                IEM_MC_ARG_EFLAGS(                  fEFlagsIn,              0);
                IEM_MC_ARG_CONST(uint32_t,          u32Src,     u32Imm,     2);
                IEM_MC_CALL_AIMPL_3(uint32_t, fEFlagsRet, pfnAImplU32, fEFlagsIn, pu32Dst, u32Src);
                IEM_MC_STORE_GREG_U32(IEM_GET_MODRM_REG(pVCpu, bRm), u32Tmp);
                IEM_MC_COMMIT_EFLAGS(fEFlagsRet);

                IEM_MC_ADVANCE_RIP_AND_FINISH();
                IEM_MC_END();
            }
            break;
        }

        case IEMMODE_64BIT:
        {
            PFNIEMAIMPLBINU64 const pfnAImplU64 = IEMTARGETCPU_EFL_BEHAVIOR_SELECT(g_iemAImpl_imul_two_u64_eflags);
            if (IEM_IS_MODRM_REG_MODE(bRm))
            {
                /* register operand */
                uint64_t u64Imm; IEM_OPCODE_GET_NEXT_S32_SX_U64(&u64Imm);
                IEM_MC_BEGIN(IEM_MC_F_64BIT, 0);
                IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
                IEM_MC_LOCAL(uint64_t,              u64Tmp);
                IEM_MC_FETCH_GREG_U64(u64Tmp, IEM_GET_MODRM_RM(pVCpu, bRm));

                IEM_MC_ARG_LOCAL_REF(uint64_t *,    pu64Dst,     u64Tmp,    1);
                IEM_MC_ARG_EFLAGS(                  fEFlagsIn,              0);
                IEM_MC_ARG_CONST(uint64_t,          u64Src,/*=*/ u64Imm,    2);
                IEM_MC_CALL_AIMPL_3(uint32_t, fEFlagsRet, pfnAImplU64, fEFlagsIn, pu64Dst, u64Src);
                IEM_MC_STORE_GREG_U64(IEM_GET_MODRM_REG(pVCpu, bRm), u64Tmp);
                IEM_MC_COMMIT_EFLAGS(fEFlagsRet);

                IEM_MC_ADVANCE_RIP_AND_FINISH();
                IEM_MC_END();
            }
            else
            {
                /* memory operand */
                IEM_MC_BEGIN(IEM_MC_F_64BIT, 0);
                IEM_MC_LOCAL(RTGCPTR,  GCPtrEffDst);
                IEM_MC_CALC_RM_EFF_ADDR(GCPtrEffDst, bRm, 4);

                uint32_t u32Imm; IEM_OPCODE_GET_NEXT_U32(&u32Imm); /* Not using IEM_OPCODE_GET_NEXT_S32_SX_U64 to reduce the */
                IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();          /* parameter count for the threaded function for this block. */

                IEM_MC_LOCAL(uint64_t,      u64Tmp);
                IEM_MC_FETCH_MEM_U64(u64Tmp, pVCpu->iem.s.iEffSeg, GCPtrEffDst);

                IEM_MC_ARG_LOCAL_REF(uint64_t *,    pu64Dst,      u64Tmp,                   1);
                IEM_MC_ARG_EFLAGS(                  fEFlagsIn,                              0);
                IEM_MC_ARG_CONST(uint64_t,          u64Src, /*=*/ (int64_t)(int32_t)u32Imm, 2);
                IEM_MC_CALL_AIMPL_3(uint32_t, fEFlagsRet, pfnAImplU64, fEFlagsIn, pu64Dst, u64Src);
                IEM_MC_STORE_GREG_U64(IEM_GET_MODRM_REG(pVCpu, bRm), u64Tmp);
                IEM_MC_COMMIT_EFLAGS(fEFlagsRet);

                IEM_MC_ADVANCE_RIP_AND_FINISH();
                IEM_MC_END();
            }
            break;
        }

        IEM_NOT_REACHED_DEFAULT_CASE_RET();
    }
}


/**
 * @opcode      0x6a
 */
FNIEMOP_DEF(iemOp_push_Ib)
{
    IEMOP_MNEMONIC(push_Ib, "push Ib");
    IEMOP_HLP_MIN_186();
    int8_t i8Imm; IEM_OPCODE_GET_NEXT_S8(&i8Imm);
    IEMOP_HLP_DEFAULT_64BIT_OP_SIZE();

    switch (pVCpu->iem.s.enmEffOpSize)
    {
        case IEMMODE_16BIT:
            IEM_MC_BEGIN(IEM_MC_F_MIN_186, 0);
            IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
            IEM_MC_LOCAL_CONST(uint16_t, uValue, (int16_t)i8Imm);
            IEM_MC_PUSH_U16(uValue);
            IEM_MC_ADVANCE_RIP_AND_FINISH();
            IEM_MC_END();
            break;
        case IEMMODE_32BIT:
            IEM_MC_BEGIN(IEM_MC_F_MIN_386 | IEM_MC_F_NOT_64BIT, 0);
            IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
            IEM_MC_LOCAL_CONST(uint32_t, uValue, (int32_t)i8Imm);
            IEM_MC_PUSH_U32(uValue);
            IEM_MC_ADVANCE_RIP_AND_FINISH();
            IEM_MC_END();
            break;
        case IEMMODE_64BIT:
            IEM_MC_BEGIN(IEM_MC_F_64BIT, 0);
            IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
            IEM_MC_LOCAL_CONST(uint64_t, uValue, (int64_t)i8Imm);
            IEM_MC_PUSH_U64(uValue);
            IEM_MC_ADVANCE_RIP_AND_FINISH();
            IEM_MC_END();
            break;
        IEM_NOT_REACHED_DEFAULT_CASE_RET();
    }
}


/**
 * @opcode      0x6b
 * @opflclass   multiply
 */
FNIEMOP_DEF(iemOp_imul_Gv_Ev_Ib)
{
    IEMOP_MNEMONIC(imul_Gv_Ev_Ib, "imul Gv,Ev,Ib"); /* Gv = Ev * Iz; */
    IEMOP_HLP_MIN_186();
    uint8_t bRm; IEM_OPCODE_GET_NEXT_U8(&bRm);
    IEMOP_VERIFICATION_UNDEFINED_EFLAGS(X86_EFL_SF | X86_EFL_ZF | X86_EFL_AF | X86_EFL_PF);

    switch (pVCpu->iem.s.enmEffOpSize)
    {
        case IEMMODE_16BIT:
        {
            PFNIEMAIMPLBINU16 const pfnAImplU16 = IEMTARGETCPU_EFL_BEHAVIOR_SELECT(g_iemAImpl_imul_two_u16_eflags);
            if (IEM_IS_MODRM_REG_MODE(bRm))
            {
                /* register operand */
                IEM_MC_BEGIN(IEM_MC_F_MIN_186, 0);
                uint8_t u8Imm; IEM_OPCODE_GET_NEXT_U8(&u8Imm);
                IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();

                IEM_MC_LOCAL(uint16_t,              u16Tmp);
                IEM_MC_FETCH_GREG_U16(u16Tmp, IEM_GET_MODRM_RM(pVCpu, bRm));

                IEM_MC_ARG_LOCAL_REF(uint16_t *,    pu16Dst,    u16Tmp,         1);
                IEM_MC_ARG_EFLAGS(                  fEFlagsIn,                  0);
                IEM_MC_ARG_CONST(uint16_t,          u16Src,/*=*/ (int8_t)u8Imm, 2);
                IEM_MC_CALL_AIMPL_3(uint32_t, fEFlagsRet, pfnAImplU16, fEFlagsIn, pu16Dst, u16Src);
                IEM_MC_STORE_GREG_U16(IEM_GET_MODRM_REG(pVCpu, bRm), u16Tmp);
                IEM_MC_COMMIT_EFLAGS(fEFlagsRet);

                IEM_MC_ADVANCE_RIP_AND_FINISH();
                IEM_MC_END();
            }
            else
            {
                /* memory operand */
                IEM_MC_BEGIN(IEM_MC_F_MIN_186, 0);

                IEM_MC_LOCAL(RTGCPTR,  GCPtrEffDst);
                IEM_MC_CALC_RM_EFF_ADDR(GCPtrEffDst, bRm, 1);

                uint16_t u16Imm; IEM_OPCODE_GET_NEXT_S8_SX_U16(&u16Imm);
                IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();

                IEM_MC_LOCAL(uint16_t,      u16Tmp);
                IEM_MC_FETCH_MEM_U16(u16Tmp, pVCpu->iem.s.iEffSeg, GCPtrEffDst);

                IEM_MC_ARG_LOCAL_REF(uint16_t *,    pu16Dst,    u16Tmp,         1);
                IEM_MC_ARG_EFLAGS(                  fEFlagsIn,                  0);
                IEM_MC_ARG_CONST(uint16_t,          u16Src,     u16Imm,         2);
                IEM_MC_CALL_AIMPL_3(uint32_t, fEFlagsRet, pfnAImplU16, fEFlagsIn, pu16Dst, u16Src);
                IEM_MC_STORE_GREG_U16(IEM_GET_MODRM_REG(pVCpu, bRm), u16Tmp);
                IEM_MC_COMMIT_EFLAGS(fEFlagsRet);

                IEM_MC_ADVANCE_RIP_AND_FINISH();
                IEM_MC_END();
            }
            break;
        }

        case IEMMODE_32BIT:
        {
            PFNIEMAIMPLBINU32 const pfnAImplU32 = IEMTARGETCPU_EFL_BEHAVIOR_SELECT(g_iemAImpl_imul_two_u32_eflags);
            if (IEM_IS_MODRM_REG_MODE(bRm))
            {
                /* register operand */
                uint8_t u8Imm; IEM_OPCODE_GET_NEXT_U8(&u8Imm);
                IEM_MC_BEGIN(IEM_MC_F_MIN_386, 0);
                IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
                IEM_MC_LOCAL(uint32_t,      u32Tmp);
                IEM_MC_FETCH_GREG_U32(u32Tmp, IEM_GET_MODRM_RM(pVCpu, bRm));

                IEM_MC_ARG_LOCAL_REF(uint32_t *,    pu32Dst,            u32Tmp, 1);
                IEM_MC_ARG_EFLAGS(                  fEFlagsIn,                  0);
                IEM_MC_ARG_CONST(uint32_t,          u32Src,/*=*/ (int8_t)u8Imm, 2);
                IEM_MC_CALL_AIMPL_3(uint32_t, fEFlagsRet, pfnAImplU32, fEFlagsIn, pu32Dst, u32Src);
                IEM_MC_STORE_GREG_U32(IEM_GET_MODRM_REG(pVCpu, bRm), u32Tmp);
                IEM_MC_COMMIT_EFLAGS(fEFlagsRet);

                IEM_MC_ADVANCE_RIP_AND_FINISH();
                IEM_MC_END();
            }
            else
            {
                /* memory operand */
                IEM_MC_BEGIN(IEM_MC_F_MIN_386, 0);
                IEM_MC_LOCAL(RTGCPTR,  GCPtrEffDst);
                IEM_MC_CALC_RM_EFF_ADDR(GCPtrEffDst, bRm, 1);

                uint32_t u32Imm; IEM_OPCODE_GET_NEXT_S8_SX_U32(&u32Imm);
                IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();

                IEM_MC_LOCAL(uint32_t,      u32Tmp);
                IEM_MC_FETCH_MEM_U32(u32Tmp, pVCpu->iem.s.iEffSeg, GCPtrEffDst);

                IEM_MC_ARG_LOCAL_REF(uint32_t *,    pu32Dst, u32Tmp,            1);
                IEM_MC_ARG_EFLAGS(                  fEFlagsIn,                  0);
                IEM_MC_ARG_CONST(uint32_t,          u32Src,  u32Imm,            2);
                IEM_MC_CALL_AIMPL_3(uint32_t, fEFlagsRet, pfnAImplU32, fEFlagsIn, pu32Dst, u32Src);
                IEM_MC_STORE_GREG_U32(IEM_GET_MODRM_REG(pVCpu, bRm), u32Tmp);
                IEM_MC_COMMIT_EFLAGS(fEFlagsRet);

                IEM_MC_ADVANCE_RIP_AND_FINISH();
                IEM_MC_END();
            }
            break;
        }

        case IEMMODE_64BIT:
        {
            PFNIEMAIMPLBINU64 const pfnAImplU64 = IEMTARGETCPU_EFL_BEHAVIOR_SELECT(g_iemAImpl_imul_two_u64_eflags);
            if (IEM_IS_MODRM_REG_MODE(bRm))
            {
                /* register operand */
                uint8_t u8Imm; IEM_OPCODE_GET_NEXT_U8(&u8Imm);
                IEM_MC_BEGIN(IEM_MC_F_64BIT, 0);
                IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
                IEM_MC_LOCAL(uint64_t,      u64Tmp);
                IEM_MC_FETCH_GREG_U64(u64Tmp, IEM_GET_MODRM_RM(pVCpu, bRm));

                IEM_MC_ARG_LOCAL_REF(uint64_t *,    pu64Dst,                       u64Tmp,  1);
                IEM_MC_ARG_EFLAGS(                  fEFlagsIn,                              0);
                IEM_MC_ARG_CONST(uint64_t,          u64Src, /*=*/ (int64_t)(int8_t)u8Imm,   2);
                IEM_MC_CALL_AIMPL_3(uint32_t, fEFlagsRet, pfnAImplU64, fEFlagsIn, pu64Dst, u64Src);
                IEM_MC_STORE_GREG_U64(IEM_GET_MODRM_REG(pVCpu, bRm), u64Tmp);
                IEM_MC_COMMIT_EFLAGS(fEFlagsRet);

                IEM_MC_ADVANCE_RIP_AND_FINISH();
                IEM_MC_END();
            }
            else
            {
                /* memory operand */
                IEM_MC_BEGIN(IEM_MC_F_64BIT, 0);
                IEM_MC_LOCAL(RTGCPTR,  GCPtrEffDst);
                IEM_MC_CALC_RM_EFF_ADDR(GCPtrEffDst, bRm, 1);

                uint8_t u8Imm; IEM_OPCODE_GET_NEXT_U8(&u8Imm); /* Not using IEM_OPCODE_GET_NEXT_S8_SX_U64 to reduce the threaded parameter count. */
                IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();

                IEM_MC_LOCAL(uint64_t,      u64Tmp);
                IEM_MC_FETCH_MEM_U64(u64Tmp, pVCpu->iem.s.iEffSeg, GCPtrEffDst);

                IEM_MC_ARG_LOCAL_REF(uint64_t *,    pu64Dst,      u64Tmp,                   1);
                IEM_MC_ARG_EFLAGS(                  fEFlagsIn,                              0);
                IEM_MC_ARG_CONST(uint64_t,          u64Src, /*=*/ (int64_t)(int8_t)u8Imm,   2);
                IEM_MC_CALL_AIMPL_3(uint32_t, fEFlagsRet, pfnAImplU64, fEFlagsIn, pu64Dst, u64Src);
                IEM_MC_STORE_GREG_U64(IEM_GET_MODRM_REG(pVCpu, bRm), u64Tmp);
                IEM_MC_COMMIT_EFLAGS(fEFlagsRet);

                IEM_MC_ADVANCE_RIP_AND_FINISH();
                IEM_MC_END();
            }
            break;
        }

        IEM_NOT_REACHED_DEFAULT_CASE_RET();
    }
}


/**
 * @opcode      0x6c
 * @opfltest    iopl,df
 */
FNIEMOP_DEF(iemOp_insb_Yb_DX)
{
    IEMOP_HLP_MIN_186();
    IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
    if (pVCpu->iem.s.fPrefixes & (IEM_OP_PRF_REPNZ | IEM_OP_PRF_REPZ))
    {
        IEMOP_MNEMONIC(rep_insb_Yb_DX, "rep ins Yb,DX");
        switch (pVCpu->iem.s.enmEffAddrMode)
        {
            case IEMMODE_16BIT:
                IEM_MC_DEFER_TO_CIMPL_1_RET(IEM_CIMPL_F_REP | IEM_CIMPL_F_VMEXIT | IEM_CIMPL_F_IO,
                                              RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xDI)
                                            | RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xCX),
                                            iemCImpl_rep_ins_op8_addr16, false);
            case IEMMODE_32BIT:
                IEM_MC_DEFER_TO_CIMPL_1_RET(IEM_CIMPL_F_REP | IEM_CIMPL_F_VMEXIT | IEM_CIMPL_F_IO,
                                              RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xDI)
                                            | RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xCX),
                                            iemCImpl_rep_ins_op8_addr32, false);
            case IEMMODE_64BIT:
                IEM_MC_DEFER_TO_CIMPL_1_RET(IEM_CIMPL_F_REP | IEM_CIMPL_F_VMEXIT | IEM_CIMPL_F_IO,
                                              RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xDI)
                                            | RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xCX),
                                            iemCImpl_rep_ins_op8_addr64, false);
            IEM_NOT_REACHED_DEFAULT_CASE_RET();
        }
    }
    else
    {
        IEMOP_MNEMONIC(ins_Yb_DX, "ins Yb,DX");
        switch (pVCpu->iem.s.enmEffAddrMode)
        {
            case IEMMODE_16BIT:
                IEM_MC_DEFER_TO_CIMPL_1_RET(IEM_CIMPL_F_VMEXIT | IEM_CIMPL_F_IO,
                                            RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xDI),
                                            iemCImpl_ins_op8_addr16, false);
            case IEMMODE_32BIT:
                IEM_MC_DEFER_TO_CIMPL_1_RET(IEM_CIMPL_F_VMEXIT | IEM_CIMPL_F_IO,
                                            RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xDI),
                                            iemCImpl_ins_op8_addr32, false);
            case IEMMODE_64BIT:
                IEM_MC_DEFER_TO_CIMPL_1_RET(IEM_CIMPL_F_VMEXIT | IEM_CIMPL_F_IO,
                                            RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xDI),
                                            iemCImpl_ins_op8_addr64, false);
            IEM_NOT_REACHED_DEFAULT_CASE_RET();
        }
    }
}


/**
 * @opcode      0x6d
 * @opfltest    iopl,df
 */
FNIEMOP_DEF(iemOp_inswd_Yv_DX)
{
    IEMOP_HLP_MIN_186();
    IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
    if (pVCpu->iem.s.fPrefixes & (IEM_OP_PRF_REPZ | IEM_OP_PRF_REPNZ))
    {
        IEMOP_MNEMONIC(rep_ins_Yv_DX, "rep ins Yv,DX");
        switch (pVCpu->iem.s.enmEffOpSize)
        {
            case IEMMODE_16BIT:
                switch (pVCpu->iem.s.enmEffAddrMode)
                {
                    case IEMMODE_16BIT:
                        IEM_MC_DEFER_TO_CIMPL_1_RET(IEM_CIMPL_F_REP | IEM_CIMPL_F_VMEXIT | IEM_CIMPL_F_IO,
                                                      RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xDI)
                                                    | RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xCX),
                                                    iemCImpl_rep_ins_op16_addr16, false);
                    case IEMMODE_32BIT:
                        IEM_MC_DEFER_TO_CIMPL_1_RET(IEM_CIMPL_F_REP | IEM_CIMPL_F_VMEXIT | IEM_CIMPL_F_IO,
                                                      RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xDI)
                                                    | RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xCX),
                                                    iemCImpl_rep_ins_op16_addr32, false);
                    case IEMMODE_64BIT:
                        IEM_MC_DEFER_TO_CIMPL_1_RET(IEM_CIMPL_F_REP | IEM_CIMPL_F_VMEXIT | IEM_CIMPL_F_IO,
                                                      RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xDI)
                                                    | RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xCX),
                                                    iemCImpl_rep_ins_op16_addr64, false);
                    IEM_NOT_REACHED_DEFAULT_CASE_RET();
                }
                break;
            case IEMMODE_64BIT:
            case IEMMODE_32BIT:
                switch (pVCpu->iem.s.enmEffAddrMode)
                {
                    case IEMMODE_16BIT:
                        IEM_MC_DEFER_TO_CIMPL_1_RET(IEM_CIMPL_F_REP | IEM_CIMPL_F_VMEXIT | IEM_CIMPL_F_IO,
                                                      RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xDI)
                                                    | RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xCX),
                                                    iemCImpl_rep_ins_op32_addr16, false);
                    case IEMMODE_32BIT:
                        IEM_MC_DEFER_TO_CIMPL_1_RET(IEM_CIMPL_F_REP | IEM_CIMPL_F_VMEXIT | IEM_CIMPL_F_IO,
                                                      RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xDI)
                                                    | RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xCX),
                                                    iemCImpl_rep_ins_op32_addr32, false);
                    case IEMMODE_64BIT:
                        IEM_MC_DEFER_TO_CIMPL_1_RET(IEM_CIMPL_F_REP | IEM_CIMPL_F_VMEXIT | IEM_CIMPL_F_IO,
                                                      RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xDI)
                                                    | RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xCX),
                                                    iemCImpl_rep_ins_op32_addr64, false);
                    IEM_NOT_REACHED_DEFAULT_CASE_RET();
                }
                break;
            IEM_NOT_REACHED_DEFAULT_CASE_RET();
        }
    }
    else
    {
        IEMOP_MNEMONIC(ins_Yv_DX, "ins Yv,DX");
        switch (pVCpu->iem.s.enmEffOpSize)
        {
            case IEMMODE_16BIT:
                switch (pVCpu->iem.s.enmEffAddrMode)
                {
                    case IEMMODE_16BIT:
                        IEM_MC_DEFER_TO_CIMPL_1_RET(IEM_CIMPL_F_VMEXIT | IEM_CIMPL_F_IO,
                                                    RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xDI),
                                                    iemCImpl_ins_op16_addr16, false);
                    case IEMMODE_32BIT:
                        IEM_MC_DEFER_TO_CIMPL_1_RET(IEM_CIMPL_F_VMEXIT | IEM_CIMPL_F_IO,
                                                    RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xDI),
                                                    iemCImpl_ins_op16_addr32, false);
                    case IEMMODE_64BIT:
                        IEM_MC_DEFER_TO_CIMPL_1_RET(IEM_CIMPL_F_VMEXIT | IEM_CIMPL_F_IO,
                                                    RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xDI),
                                                    iemCImpl_ins_op16_addr64, false);
                    IEM_NOT_REACHED_DEFAULT_CASE_RET();
                }
                break;
            case IEMMODE_64BIT:
            case IEMMODE_32BIT:
                switch (pVCpu->iem.s.enmEffAddrMode)
                {
                    case IEMMODE_16BIT:
                        IEM_MC_DEFER_TO_CIMPL_1_RET(IEM_CIMPL_F_VMEXIT | IEM_CIMPL_F_IO,
                                                    RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xDI),
                                                    iemCImpl_ins_op32_addr16, false);
                    case IEMMODE_32BIT:
                        IEM_MC_DEFER_TO_CIMPL_1_RET(IEM_CIMPL_F_VMEXIT | IEM_CIMPL_F_IO,
                                                    RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xDI),
                                                    iemCImpl_ins_op32_addr32, false);
                    case IEMMODE_64BIT:
                        IEM_MC_DEFER_TO_CIMPL_1_RET(IEM_CIMPL_F_VMEXIT | IEM_CIMPL_F_IO,
                                                    RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xDI),
                                                    iemCImpl_ins_op32_addr64, false);
                    IEM_NOT_REACHED_DEFAULT_CASE_RET();
                }
                break;
            IEM_NOT_REACHED_DEFAULT_CASE_RET();
        }
    }
}


/**
 * @opcode      0x6e
 * @opfltest    iopl,df
 */
FNIEMOP_DEF(iemOp_outsb_Yb_DX)
{
    IEMOP_HLP_MIN_186();
    IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
    if (pVCpu->iem.s.fPrefixes & (IEM_OP_PRF_REPNZ | IEM_OP_PRF_REPZ))
    {
        IEMOP_MNEMONIC(rep_outsb_DX_Yb, "rep outs DX,Yb");
        switch (pVCpu->iem.s.enmEffAddrMode)
        {
            case IEMMODE_16BIT:
                IEM_MC_DEFER_TO_CIMPL_2_RET(IEM_CIMPL_F_REP | IEM_CIMPL_F_VMEXIT | IEM_CIMPL_F_IO,
                                              RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xSI)
                                            | RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xCX),
                                            iemCImpl_rep_outs_op8_addr16, pVCpu->iem.s.iEffSeg, false);
            case IEMMODE_32BIT:
                IEM_MC_DEFER_TO_CIMPL_2_RET(IEM_CIMPL_F_REP | IEM_CIMPL_F_VMEXIT | IEM_CIMPL_F_IO,
                                              RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xSI)
                                            | RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xCX),
                                            iemCImpl_rep_outs_op8_addr32, pVCpu->iem.s.iEffSeg, false);
            case IEMMODE_64BIT:
                IEM_MC_DEFER_TO_CIMPL_2_RET(IEM_CIMPL_F_REP | IEM_CIMPL_F_VMEXIT | IEM_CIMPL_F_IO,
                                              RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xSI)
                                            | RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xCX),
                                            iemCImpl_rep_outs_op8_addr64, pVCpu->iem.s.iEffSeg, false);
            IEM_NOT_REACHED_DEFAULT_CASE_RET();
        }
    }
    else
    {
        IEMOP_MNEMONIC(outs_DX_Yb, "outs DX,Yb");
        switch (pVCpu->iem.s.enmEffAddrMode)
        {
            case IEMMODE_16BIT:
                IEM_MC_DEFER_TO_CIMPL_2_RET(IEM_CIMPL_F_VMEXIT | IEM_CIMPL_F_IO,
                                            RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xSI),
                                            iemCImpl_outs_op8_addr16, pVCpu->iem.s.iEffSeg, false);
            case IEMMODE_32BIT:
                IEM_MC_DEFER_TO_CIMPL_2_RET(IEM_CIMPL_F_VMEXIT | IEM_CIMPL_F_IO,
                                            RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xSI),
                                            iemCImpl_outs_op8_addr32, pVCpu->iem.s.iEffSeg, false);
            case IEMMODE_64BIT:
                IEM_MC_DEFER_TO_CIMPL_2_RET(IEM_CIMPL_F_VMEXIT | IEM_CIMPL_F_IO,
                                            RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xSI),
                                            iemCImpl_outs_op8_addr64, pVCpu->iem.s.iEffSeg, false);
            IEM_NOT_REACHED_DEFAULT_CASE_RET();
        }
    }
}


/**
 * @opcode      0x6f
 * @opfltest    iopl,df
 */
FNIEMOP_DEF(iemOp_outswd_Yv_DX)
{
    IEMOP_HLP_MIN_186();
    IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
    if (pVCpu->iem.s.fPrefixes & (IEM_OP_PRF_REPZ | IEM_OP_PRF_REPNZ))
    {
        IEMOP_MNEMONIC(rep_outs_DX_Yv, "rep outs DX,Yv");
        switch (pVCpu->iem.s.enmEffOpSize)
        {
            case IEMMODE_16BIT:
                switch (pVCpu->iem.s.enmEffAddrMode)
                {
                    case IEMMODE_16BIT:
                        IEM_MC_DEFER_TO_CIMPL_2_RET(IEM_CIMPL_F_REP | IEM_CIMPL_F_VMEXIT | IEM_CIMPL_F_IO,
                                                      RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xSI)
                                                    | RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xCX),
                                                    iemCImpl_rep_outs_op16_addr16, pVCpu->iem.s.iEffSeg, false);
                    case IEMMODE_32BIT:
                        IEM_MC_DEFER_TO_CIMPL_2_RET(IEM_CIMPL_F_REP | IEM_CIMPL_F_VMEXIT | IEM_CIMPL_F_IO,
                                                      RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xSI)
                                                    | RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xCX),
                                                    iemCImpl_rep_outs_op16_addr32, pVCpu->iem.s.iEffSeg, false);
                    case IEMMODE_64BIT:
                        IEM_MC_DEFER_TO_CIMPL_2_RET(IEM_CIMPL_F_REP | IEM_CIMPL_F_VMEXIT | IEM_CIMPL_F_IO,
                                                      RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xSI)
                                                    | RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xCX),
                                                    iemCImpl_rep_outs_op16_addr64, pVCpu->iem.s.iEffSeg, false);
                    IEM_NOT_REACHED_DEFAULT_CASE_RET();
                }
                break;
            case IEMMODE_64BIT:
            case IEMMODE_32BIT:
                switch (pVCpu->iem.s.enmEffAddrMode)
                {
                    case IEMMODE_16BIT:
                        IEM_MC_DEFER_TO_CIMPL_2_RET(IEM_CIMPL_F_REP | IEM_CIMPL_F_VMEXIT | IEM_CIMPL_F_IO,
                                                      RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xSI)
                                                    | RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xCX),
                                                    iemCImpl_rep_outs_op32_addr16, pVCpu->iem.s.iEffSeg, false);
                    case IEMMODE_32BIT:
                        IEM_MC_DEFER_TO_CIMPL_2_RET(IEM_CIMPL_F_REP | IEM_CIMPL_F_VMEXIT | IEM_CIMPL_F_IO,
                                                      RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xSI)
                                                    | RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xCX),
                                                    iemCImpl_rep_outs_op32_addr32, pVCpu->iem.s.iEffSeg, false);
                    case IEMMODE_64BIT:
                        IEM_MC_DEFER_TO_CIMPL_2_RET(IEM_CIMPL_F_REP | IEM_CIMPL_F_VMEXIT | IEM_CIMPL_F_IO,
                                                      RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xSI)
                                                    | RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xCX),
                                                    iemCImpl_rep_outs_op32_addr64, pVCpu->iem.s.iEffSeg, false);
                    IEM_NOT_REACHED_DEFAULT_CASE_RET();
                }
                break;
            IEM_NOT_REACHED_DEFAULT_CASE_RET();
        }
    }
    else
    {
        IEMOP_MNEMONIC(outs_DX_Yv, "outs DX,Yv");
        switch (pVCpu->iem.s.enmEffOpSize)
        {
            case IEMMODE_16BIT:
                switch (pVCpu->iem.s.enmEffAddrMode)
                {
                    case IEMMODE_16BIT:
                        IEM_MC_DEFER_TO_CIMPL_2_RET(IEM_CIMPL_F_VMEXIT | IEM_CIMPL_F_IO,
                                                    RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xSI),
                                                    iemCImpl_outs_op16_addr16, pVCpu->iem.s.iEffSeg, false);
                    case IEMMODE_32BIT:
                        IEM_MC_DEFER_TO_CIMPL_2_RET(IEM_CIMPL_F_VMEXIT | IEM_CIMPL_F_IO,
                                                    RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xSI),
                                                    iemCImpl_outs_op16_addr32, pVCpu->iem.s.iEffSeg, false);
                    case IEMMODE_64BIT:
                        IEM_MC_DEFER_TO_CIMPL_2_RET(IEM_CIMPL_F_VMEXIT | IEM_CIMPL_F_IO,
                                                    RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xSI),
                                                    iemCImpl_outs_op16_addr64, pVCpu->iem.s.iEffSeg, false);
                    IEM_NOT_REACHED_DEFAULT_CASE_RET();
                }
                break;
            case IEMMODE_64BIT:
            case IEMMODE_32BIT:
                switch (pVCpu->iem.s.enmEffAddrMode)
                {
                    case IEMMODE_16BIT:
                        IEM_MC_DEFER_TO_CIMPL_2_RET(IEM_CIMPL_F_VMEXIT | IEM_CIMPL_F_IO,
                                                    RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xSI),
                                                    iemCImpl_outs_op32_addr16, pVCpu->iem.s.iEffSeg, false);
                    case IEMMODE_32BIT:
                        IEM_MC_DEFER_TO_CIMPL_2_RET(IEM_CIMPL_F_VMEXIT | IEM_CIMPL_F_IO,
                                                    RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xSI),
                                                    iemCImpl_outs_op32_addr32, pVCpu->iem.s.iEffSeg, false);
                    case IEMMODE_64BIT:
                        IEM_MC_DEFER_TO_CIMPL_2_RET(IEM_CIMPL_F_VMEXIT | IEM_CIMPL_F_IO,
                                                    RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xSI),
                                                    iemCImpl_outs_op32_addr64, pVCpu->iem.s.iEffSeg, false);
                    IEM_NOT_REACHED_DEFAULT_CASE_RET();
                }
                break;
            IEM_NOT_REACHED_DEFAULT_CASE_RET();
        }
    }
}


/**
 * @opcode      0x70
 * @opfltest    of
 */
FNIEMOP_DEF(iemOp_jo_Jb)
{
    IEMOP_MNEMONIC(jo_Jb, "jo  Jb");
    int8_t i8Imm; IEM_OPCODE_GET_NEXT_S8(&i8Imm);
    IEMOP_HLP_DEFAULT_64BIT_OP_SIZE_AND_INTEL_IGNORES_OP_SIZE_PREFIX();

    IEM_MC_BEGIN(0, 0);
    IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
    IEM_MC_IF_EFL_BIT_SET(X86_EFL_OF) {
        IEM_MC_REL_JMP_S8_AND_FINISH(i8Imm);
    } IEM_MC_ELSE() {
        IEM_MC_ADVANCE_RIP_AND_FINISH();
    } IEM_MC_ENDIF();
    IEM_MC_END();
}


/**
 * @opcode      0x71
 * @opfltest    of
 */
FNIEMOP_DEF(iemOp_jno_Jb)
{
    IEMOP_MNEMONIC(jno_Jb, "jno Jb");
    int8_t i8Imm; IEM_OPCODE_GET_NEXT_S8(&i8Imm);
    IEMOP_HLP_DEFAULT_64BIT_OP_SIZE_AND_INTEL_IGNORES_OP_SIZE_PREFIX();

    IEM_MC_BEGIN(0, 0);
    IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
    IEM_MC_IF_EFL_BIT_SET(X86_EFL_OF) {
        IEM_MC_ADVANCE_RIP_AND_FINISH();
    } IEM_MC_ELSE() {
        IEM_MC_REL_JMP_S8_AND_FINISH(i8Imm);
    } IEM_MC_ENDIF();
    IEM_MC_END();
}

/**
 * @opcode      0x72
 * @opfltest    cf
 */
FNIEMOP_DEF(iemOp_jc_Jb)
{
    IEMOP_MNEMONIC(jc_Jb, "jc/jnae Jb");
    int8_t i8Imm; IEM_OPCODE_GET_NEXT_S8(&i8Imm);
    IEMOP_HLP_DEFAULT_64BIT_OP_SIZE_AND_INTEL_IGNORES_OP_SIZE_PREFIX();

    IEM_MC_BEGIN(0, 0);
    IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
    IEM_MC_IF_EFL_BIT_SET(X86_EFL_CF) {
        IEM_MC_REL_JMP_S8_AND_FINISH(i8Imm);
    } IEM_MC_ELSE() {
        IEM_MC_ADVANCE_RIP_AND_FINISH();
    } IEM_MC_ENDIF();
    IEM_MC_END();
}


/**
 * @opcode      0x73
 * @opfltest    cf
 */
FNIEMOP_DEF(iemOp_jnc_Jb)
{
    IEMOP_MNEMONIC(jnc_Jb, "jnc/jnb Jb");
    int8_t i8Imm; IEM_OPCODE_GET_NEXT_S8(&i8Imm);
    IEMOP_HLP_DEFAULT_64BIT_OP_SIZE_AND_INTEL_IGNORES_OP_SIZE_PREFIX();

    IEM_MC_BEGIN(0, 0);
    IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
    IEM_MC_IF_EFL_BIT_SET(X86_EFL_CF) {
        IEM_MC_ADVANCE_RIP_AND_FINISH();
    } IEM_MC_ELSE() {
        IEM_MC_REL_JMP_S8_AND_FINISH(i8Imm);
    } IEM_MC_ENDIF();
    IEM_MC_END();
}


/**
 * @opcode      0x74
 * @opfltest    zf
 */
FNIEMOP_DEF(iemOp_je_Jb)
{
    IEMOP_MNEMONIC(je_Jb, "je/jz   Jb");
    int8_t i8Imm; IEM_OPCODE_GET_NEXT_S8(&i8Imm);
    IEMOP_HLP_DEFAULT_64BIT_OP_SIZE_AND_INTEL_IGNORES_OP_SIZE_PREFIX();

    IEM_MC_BEGIN(0, 0);
    IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
    IEM_MC_IF_EFL_BIT_SET(X86_EFL_ZF) {
        IEM_MC_REL_JMP_S8_AND_FINISH(i8Imm);
    } IEM_MC_ELSE() {
        IEM_MC_ADVANCE_RIP_AND_FINISH();
    } IEM_MC_ENDIF();
    IEM_MC_END();
}


/**
 * @opcode      0x75
 * @opfltest    zf
 */
FNIEMOP_DEF(iemOp_jne_Jb)
{
    IEMOP_MNEMONIC(jne_Jb, "jne/jnz Jb");
    int8_t i8Imm; IEM_OPCODE_GET_NEXT_S8(&i8Imm);
    IEMOP_HLP_DEFAULT_64BIT_OP_SIZE_AND_INTEL_IGNORES_OP_SIZE_PREFIX();

    IEM_MC_BEGIN(0, 0);
    IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
    IEM_MC_IF_EFL_BIT_SET(X86_EFL_ZF) {
        IEM_MC_ADVANCE_RIP_AND_FINISH();
    } IEM_MC_ELSE() {
        IEM_MC_REL_JMP_S8_AND_FINISH(i8Imm);
    } IEM_MC_ENDIF();
    IEM_MC_END();
}


/**
 * @opcode      0x76
 * @opfltest    cf,zf
 */
FNIEMOP_DEF(iemOp_jbe_Jb)
{
    IEMOP_MNEMONIC(jbe_Jb, "jbe/jna Jb");
    int8_t i8Imm; IEM_OPCODE_GET_NEXT_S8(&i8Imm);
    IEMOP_HLP_DEFAULT_64BIT_OP_SIZE_AND_INTEL_IGNORES_OP_SIZE_PREFIX();

    IEM_MC_BEGIN(0, 0);
    IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
    IEM_MC_IF_EFL_ANY_BITS_SET(X86_EFL_CF | X86_EFL_ZF) {
        IEM_MC_REL_JMP_S8_AND_FINISH(i8Imm);
    } IEM_MC_ELSE() {
        IEM_MC_ADVANCE_RIP_AND_FINISH();
    } IEM_MC_ENDIF();
    IEM_MC_END();
}


/**
 * @opcode      0x77
 * @opfltest    cf,zf
 */
FNIEMOP_DEF(iemOp_jnbe_Jb)
{
    IEMOP_MNEMONIC(ja_Jb, "ja/jnbe Jb");
    int8_t i8Imm; IEM_OPCODE_GET_NEXT_S8(&i8Imm);
    IEMOP_HLP_DEFAULT_64BIT_OP_SIZE_AND_INTEL_IGNORES_OP_SIZE_PREFIX();

    IEM_MC_BEGIN(0, 0);
    IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
    IEM_MC_IF_EFL_ANY_BITS_SET(X86_EFL_CF | X86_EFL_ZF) {
        IEM_MC_ADVANCE_RIP_AND_FINISH();
    } IEM_MC_ELSE() {
        IEM_MC_REL_JMP_S8_AND_FINISH(i8Imm);
    } IEM_MC_ENDIF();
    IEM_MC_END();
}


/**
 * @opcode      0x78
 * @opfltest    sf
 */
FNIEMOP_DEF(iemOp_js_Jb)
{
    IEMOP_MNEMONIC(js_Jb, "js  Jb");
    int8_t i8Imm; IEM_OPCODE_GET_NEXT_S8(&i8Imm);
    IEMOP_HLP_DEFAULT_64BIT_OP_SIZE_AND_INTEL_IGNORES_OP_SIZE_PREFIX();

    IEM_MC_BEGIN(0, 0);
    IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
    IEM_MC_IF_EFL_BIT_SET(X86_EFL_SF) {
        IEM_MC_REL_JMP_S8_AND_FINISH(i8Imm);
    } IEM_MC_ELSE() {
        IEM_MC_ADVANCE_RIP_AND_FINISH();
    } IEM_MC_ENDIF();
    IEM_MC_END();
}


/**
 * @opcode      0x79
 * @opfltest    sf
 */
FNIEMOP_DEF(iemOp_jns_Jb)
{
    IEMOP_MNEMONIC(jns_Jb, "jns Jb");
    int8_t i8Imm; IEM_OPCODE_GET_NEXT_S8(&i8Imm);
    IEMOP_HLP_DEFAULT_64BIT_OP_SIZE_AND_INTEL_IGNORES_OP_SIZE_PREFIX();

    IEM_MC_BEGIN(0, 0);
    IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
    IEM_MC_IF_EFL_BIT_SET(X86_EFL_SF) {
        IEM_MC_ADVANCE_RIP_AND_FINISH();
    } IEM_MC_ELSE() {
        IEM_MC_REL_JMP_S8_AND_FINISH(i8Imm);
    } IEM_MC_ENDIF();
    IEM_MC_END();
}


/**
 * @opcode      0x7a
 * @opfltest    pf
 */
FNIEMOP_DEF(iemOp_jp_Jb)
{
    IEMOP_MNEMONIC(jp_Jb, "jp  Jb");
    int8_t i8Imm; IEM_OPCODE_GET_NEXT_S8(&i8Imm);
    IEMOP_HLP_DEFAULT_64BIT_OP_SIZE_AND_INTEL_IGNORES_OP_SIZE_PREFIX();

    IEM_MC_BEGIN(0, 0);
    IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
    IEM_MC_IF_EFL_BIT_SET(X86_EFL_PF) {
        IEM_MC_REL_JMP_S8_AND_FINISH(i8Imm);
    } IEM_MC_ELSE() {
        IEM_MC_ADVANCE_RIP_AND_FINISH();
    } IEM_MC_ENDIF();
    IEM_MC_END();
}


/**
 * @opcode      0x7b
 * @opfltest    pf
 */
FNIEMOP_DEF(iemOp_jnp_Jb)
{
    IEMOP_MNEMONIC(jnp_Jb, "jnp Jb");
    int8_t i8Imm; IEM_OPCODE_GET_NEXT_S8(&i8Imm);
    IEMOP_HLP_DEFAULT_64BIT_OP_SIZE_AND_INTEL_IGNORES_OP_SIZE_PREFIX();

    IEM_MC_BEGIN(0, 0);
    IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
    IEM_MC_IF_EFL_BIT_SET(X86_EFL_PF) {
        IEM_MC_ADVANCE_RIP_AND_FINISH();
    } IEM_MC_ELSE() {
        IEM_MC_REL_JMP_S8_AND_FINISH(i8Imm);
    } IEM_MC_ENDIF();
    IEM_MC_END();
}


/**
 * @opcode      0x7c
 * @opfltest    sf,of
 */
FNIEMOP_DEF(iemOp_jl_Jb)
{
    IEMOP_MNEMONIC(jl_Jb, "jl/jnge Jb");
    int8_t i8Imm; IEM_OPCODE_GET_NEXT_S8(&i8Imm);
    IEMOP_HLP_DEFAULT_64BIT_OP_SIZE_AND_INTEL_IGNORES_OP_SIZE_PREFIX();

    IEM_MC_BEGIN(0, 0);
    IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
    IEM_MC_IF_EFL_BITS_NE(X86_EFL_SF, X86_EFL_OF) {
        IEM_MC_REL_JMP_S8_AND_FINISH(i8Imm);
    } IEM_MC_ELSE() {
        IEM_MC_ADVANCE_RIP_AND_FINISH();
    } IEM_MC_ENDIF();
    IEM_MC_END();
}


/**
 * @opcode      0x7d
 * @opfltest    sf,of
 */
FNIEMOP_DEF(iemOp_jnl_Jb)
{
    IEMOP_MNEMONIC(jge_Jb, "jnl/jge Jb");
    int8_t i8Imm; IEM_OPCODE_GET_NEXT_S8(&i8Imm);
    IEMOP_HLP_DEFAULT_64BIT_OP_SIZE_AND_INTEL_IGNORES_OP_SIZE_PREFIX();

    IEM_MC_BEGIN(0, 0);
    IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
    IEM_MC_IF_EFL_BITS_NE(X86_EFL_SF, X86_EFL_OF) {
        IEM_MC_ADVANCE_RIP_AND_FINISH();
    } IEM_MC_ELSE() {
        IEM_MC_REL_JMP_S8_AND_FINISH(i8Imm);
    } IEM_MC_ENDIF();
    IEM_MC_END();
}


/**
 * @opcode      0x7e
 * @opfltest    zf,sf,of
 */
FNIEMOP_DEF(iemOp_jle_Jb)
{
    IEMOP_MNEMONIC(jle_Jb, "jle/jng Jb");
    int8_t i8Imm; IEM_OPCODE_GET_NEXT_S8(&i8Imm);
    IEMOP_HLP_DEFAULT_64BIT_OP_SIZE_AND_INTEL_IGNORES_OP_SIZE_PREFIX();

    IEM_MC_BEGIN(0, 0);
    IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
    IEM_MC_IF_EFL_BIT_SET_OR_BITS_NE(X86_EFL_ZF, X86_EFL_SF, X86_EFL_OF) {
        IEM_MC_REL_JMP_S8_AND_FINISH(i8Imm);
    } IEM_MC_ELSE() {
        IEM_MC_ADVANCE_RIP_AND_FINISH();
    } IEM_MC_ENDIF();
    IEM_MC_END();
}


/**
 * @opcode      0x7f
 * @opfltest    zf,sf,of
 */
FNIEMOP_DEF(iemOp_jnle_Jb)
{
    IEMOP_MNEMONIC(jg_Jb, "jnle/jg Jb");
    int8_t i8Imm; IEM_OPCODE_GET_NEXT_S8(&i8Imm);
    IEMOP_HLP_DEFAULT_64BIT_OP_SIZE_AND_INTEL_IGNORES_OP_SIZE_PREFIX();

    IEM_MC_BEGIN(0, 0);
    IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
    IEM_MC_IF_EFL_BIT_SET_OR_BITS_NE(X86_EFL_ZF, X86_EFL_SF, X86_EFL_OF) {
        IEM_MC_ADVANCE_RIP_AND_FINISH();
    } IEM_MC_ELSE() {
        IEM_MC_REL_JMP_S8_AND_FINISH(i8Imm);
    } IEM_MC_ENDIF();
    IEM_MC_END();
}


/**
 * Body for group 1 instruction (binary) w/ byte imm operand, dispatched via
 * iemOp_Grp1_Eb_Ib_80.
 */
#define IEMOP_BODY_BINARY_Eb_Ib_RW(a_InsNm, a_fRegNativeArchs, a_fMemNativeArchs) \
    if (IEM_IS_MODRM_REG_MODE(bRm)) \
    { \
        /* register target */ \
        IEM_MC_BEGIN(0, 0); \
        uint8_t u8Imm; IEM_OPCODE_GET_NEXT_U8(&u8Imm); \
        IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX(); \
        IEM_MC_NATIVE_IF(a_fRegNativeArchs) { \
            IEM_MC_LOCAL(uint8_t,       u8Dst); \
            IEM_MC_FETCH_GREG_U8(u8Dst, IEM_GET_MODRM_RM(pVCpu, bRm)); \
            IEM_MC_LOCAL_EFLAGS(        uEFlags); \
            IEM_MC_NATIVE_EMIT_5(RT_CONCAT3(iemNativeEmit_,a_InsNm,_r_i_efl), u8Dst, u8Imm, uEFlags, 8, 8); \
            IEM_MC_STORE_GREG_U8(IEM_GET_MODRM_RM(pVCpu, bRm), u8Dst); \
            IEM_MC_COMMIT_EFLAGS_OPT(uEFlags); \
        } IEM_MC_NATIVE_ELSE() { \
            IEM_MC_ARG(uint8_t *,       pu8Dst,                 1); \
            IEM_MC_REF_GREG_U8(pu8Dst, IEM_GET_MODRM_RM(pVCpu, bRm)); \
            IEM_MC_ARG_CONST(uint8_t,   u8Src, /*=*/ u8Imm,     2); \
            IEM_MC_ARG_EFLAGS(          fEFlagsIn,              0); \
            IEM_MC_CALL_AIMPL_3(uint32_t, fEFlagsRet, RT_CONCAT3(iemAImpl_,a_InsNm,_u8), fEFlagsIn, pu8Dst, u8Src); \
            IEM_MC_COMMIT_EFLAGS(fEFlagsRet); \
        } IEM_MC_NATIVE_ENDIF(); \
        IEM_MC_ADVANCE_RIP_AND_FINISH(); \
        IEM_MC_END(); \
    } \
    else \
    { \
        /* memory target */ \
        if (!(pVCpu->iem.s.fPrefixes & IEM_OP_PRF_LOCK) || (pVCpu->iem.s.fExec & IEM_F_X86_DISREGARD_LOCK)) \
        { \
            IEM_MC_BEGIN(0, 0); \
            IEM_MC_LOCAL(RTGCPTR, GCPtrEffDst); \
            IEM_MC_CALC_RM_EFF_ADDR(GCPtrEffDst, bRm, 1); \
            uint8_t u8Imm; IEM_OPCODE_GET_NEXT_U8(&u8Imm); \
            IEMOP_HLP_DONE_DECODING(); \
            \
            IEM_MC_LOCAL(uint8_t,       bUnmapInfo); \
            IEM_MC_ARG(uint8_t *,       pu8Dst,                 1); \
            IEM_MC_MEM_MAP_U8_RW(pu8Dst, bUnmapInfo, pVCpu->iem.s.iEffSeg, GCPtrEffDst); \
            IEM_MC_ARG_CONST(uint8_t,   u8Src, /*=*/ u8Imm,     2); \
            IEM_MC_ARG_EFLAGS(          fEFlagsIn,              0); \
            IEM_MC_CALL_AIMPL_3(uint32_t, fEFlagsRet, RT_CONCAT3(iemAImpl_,a_InsNm,_u8), fEFlagsIn, pu8Dst, u8Src); \
            \
            IEM_MC_MEM_COMMIT_AND_UNMAP_RW(bUnmapInfo); \
            IEM_MC_COMMIT_EFLAGS(fEFlagsRet); \
            IEM_MC_ADVANCE_RIP_AND_FINISH(); \
            IEM_MC_END(); \
        } \
        else \
        { \
            IEM_MC_BEGIN(0, 0); \
            IEM_MC_LOCAL(RTGCPTR, GCPtrEffDst); \
            IEM_MC_CALC_RM_EFF_ADDR(GCPtrEffDst, bRm, 1); \
            uint8_t u8Imm; IEM_OPCODE_GET_NEXT_U8(&u8Imm); \
            IEMOP_HLP_DONE_DECODING(); \
            \
            IEM_MC_LOCAL(uint8_t,       bUnmapInfo); \
            IEM_MC_ARG(uint8_t *,       pu8Dst,                 1); \
            IEM_MC_MEM_MAP_U8_ATOMIC(pu8Dst, bUnmapInfo, pVCpu->iem.s.iEffSeg, GCPtrEffDst); \
            IEM_MC_ARG_CONST(uint8_t,   u8Src, /*=*/ u8Imm,     2); \
            IEM_MC_ARG_EFLAGS(          fEFlagsIn,              0); \
            IEM_MC_CALL_AIMPL_3(uint32_t, fEFlagsRet, RT_CONCAT3(iemAImpl_,a_InsNm,_u8_locked), fEFlagsIn, pu8Dst, u8Src); \
            \
            IEM_MC_MEM_COMMIT_AND_UNMAP_ATOMIC(bUnmapInfo); \
            IEM_MC_COMMIT_EFLAGS(fEFlagsRet); \
            IEM_MC_ADVANCE_RIP_AND_FINISH(); \
            IEM_MC_END(); \
        } \
    } \
    (void)0

#define IEMOP_BODY_BINARY_Eb_Ib_RO(a_InsNm, a_fNativeArchs) \
    if (IEM_IS_MODRM_REG_MODE(bRm)) \
    { \
        /* register target */ \
        IEM_MC_BEGIN(0, 0); \
        uint8_t u8Imm; IEM_OPCODE_GET_NEXT_U8(&u8Imm); \
        IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX(); \
        IEM_MC_NATIVE_IF(a_fNativeArchs) { \
            IEM_MC_LOCAL(uint8_t,       u8Dst); \
            IEM_MC_FETCH_GREG_U8(u8Dst, IEM_GET_MODRM_RM(pVCpu, bRm)); \
            IEM_MC_LOCAL_EFLAGS(uEFlags); \
            IEM_MC_NATIVE_EMIT_5(RT_CONCAT3(iemNativeEmit_,a_InsNm,_r_i_efl), u8Dst, u8Imm, uEFlags, 8, 8); \
            IEM_MC_COMMIT_EFLAGS_OPT(uEFlags); \
        } IEM_MC_NATIVE_ELSE() { \
            IEM_MC_ARG(uint8_t const *, pu8Dst,                 1); \
            IEM_MC_REF_GREG_U8_CONST(pu8Dst, IEM_GET_MODRM_RM(pVCpu, bRm)); \
            IEM_MC_ARG_EFLAGS(          fEFlagsIn,              0); \
            IEM_MC_ARG_CONST(uint8_t,   u8Src, /*=*/ u8Imm,     2); \
            IEM_MC_CALL_AIMPL_3(uint32_t, fEFlagsRet, RT_CONCAT3(iemAImpl_,a_InsNm,_u8), fEFlagsIn, pu8Dst, u8Src); \
            IEM_MC_COMMIT_EFLAGS(fEFlagsRet); \
        } IEM_MC_NATIVE_ENDIF(); \
        IEM_MC_ADVANCE_RIP_AND_FINISH(); \
        IEM_MC_END(); \
    } \
    else \
    { \
        /* memory target */ \
        if (!(pVCpu->iem.s.fPrefixes & IEM_OP_PRF_LOCK) || (pVCpu->iem.s.fExec & IEM_F_X86_DISREGARD_LOCK)) \
        { \
            IEM_MC_BEGIN(0, 0); \
            IEM_MC_LOCAL(RTGCPTR, GCPtrEffDst); \
            IEM_MC_CALC_RM_EFF_ADDR(GCPtrEffDst, bRm, 1); \
            uint8_t u8Imm; IEM_OPCODE_GET_NEXT_U8(&u8Imm); \
            IEMOP_HLP_DONE_DECODING(); \
            IEM_MC_NATIVE_IF(a_fNativeArchs) { \
                IEM_MC_LOCAL(uint8_t,       u8Dst); \
                IEM_MC_FETCH_MEM_U8(u8Dst, pVCpu->iem.s.iEffSeg, GCPtrEffDst); \
                IEM_MC_LOCAL_EFLAGS(uEFlags); \
                IEM_MC_NATIVE_EMIT_5(RT_CONCAT3(iemNativeEmit_,a_InsNm,_r_i_efl), u8Dst, u8Imm, uEFlags, 8, 8); \
                IEM_MC_COMMIT_EFLAGS_OPT(uEFlags); \
            } IEM_MC_NATIVE_ELSE() { \
                IEM_MC_LOCAL(uint8_t,       bUnmapInfo); \
                IEM_MC_ARG(uint8_t const *, pu8Dst,                 1); \
                IEM_MC_MEM_MAP_U8_RO(pu8Dst, bUnmapInfo, pVCpu->iem.s.iEffSeg, GCPtrEffDst); \
                IEM_MC_ARG_EFLAGS(          fEFlagsIn,              0); \
                IEM_MC_ARG_CONST(uint8_t,   u8Src, /*=*/ u8Imm,     2); \
                IEM_MC_CALL_AIMPL_3(uint32_t, fEFlagsRet, RT_CONCAT3(iemAImpl_,a_InsNm,_u8), fEFlagsIn, pu8Dst, u8Src); \
                IEM_MC_MEM_COMMIT_AND_UNMAP_RO(bUnmapInfo); \
                IEM_MC_COMMIT_EFLAGS(fEFlagsRet); \
            } IEM_MC_NATIVE_ENDIF(); \
            IEM_MC_ADVANCE_RIP_AND_FINISH(); \
            IEM_MC_END(); \
        } \
        else \
        { \
            IEMOP_HLP_DONE_DECODING(); \
            IEMOP_RAISE_INVALID_LOCK_PREFIX_RET(); \
        } \
    } \
    (void)0



/**
 * @opmaps      grp1_80,grp1_83
 * @opcode      /0
 * @opflclass   arithmetic
 */
FNIEMOP_DEF_1(iemOp_Grp1_add_Eb_Ib, uint8_t, bRm)
{
    IEMOP_MNEMONIC(add_Eb_Ib, "add Eb,Ib");
    IEMOP_BODY_BINARY_Eb_Ib_RW(add, RT_ARCH_VAL_AMD64 | RT_ARCH_VAL_ARM64, 0);
}


/**
 * @opmaps      grp1_80,grp1_83
 * @opcode      /1
 * @opflclass   logical
 */
FNIEMOP_DEF_1(iemOp_Grp1_or_Eb_Ib, uint8_t, bRm)
{
    IEMOP_MNEMONIC(or_Eb_Ib, "or Eb,Ib");
    IEMOP_BODY_BINARY_Eb_Ib_RW(or, RT_ARCH_VAL_AMD64 | RT_ARCH_VAL_ARM64, 0);
}


/**
 * @opmaps      grp1_80,grp1_83
 * @opcode      /2
 * @opflclass   arithmetic_carry
 */
FNIEMOP_DEF_1(iemOp_Grp1_adc_Eb_Ib, uint8_t, bRm)
{
    IEMOP_MNEMONIC(adc_Eb_Ib, "adc Eb,Ib");
    IEMOP_BODY_BINARY_Eb_Ib_RW(adc, RT_ARCH_VAL_AMD64 | RT_ARCH_VAL_ARM64, 0);
}


/**
 * @opmaps      grp1_80,grp1_83
 * @opcode      /3
 * @opflclass   arithmetic_carry
 */
FNIEMOP_DEF_1(iemOp_Grp1_sbb_Eb_Ib, uint8_t, bRm)
{
    IEMOP_MNEMONIC(sbb_Eb_Ib, "sbb Eb,Ib");
    IEMOP_BODY_BINARY_Eb_Ib_RW(sbb, RT_ARCH_VAL_AMD64 | RT_ARCH_VAL_ARM64, 0);
}


/**
 * @opmaps      grp1_80,grp1_83
 * @opcode      /4
 * @opflclass   logical
 */
FNIEMOP_DEF_1(iemOp_Grp1_and_Eb_Ib, uint8_t, bRm)
{
    IEMOP_MNEMONIC(and_Eb_Ib, "and Eb,Ib");
    IEMOP_BODY_BINARY_Eb_Ib_RW(and, RT_ARCH_VAL_AMD64 | RT_ARCH_VAL_ARM64, 0);
}


/**
 * @opmaps      grp1_80,grp1_83
 * @opcode      /5
 * @opflclass   arithmetic
 */
FNIEMOP_DEF_1(iemOp_Grp1_sub_Eb_Ib, uint8_t, bRm)
{
    IEMOP_MNEMONIC(sub_Eb_Ib, "sub Eb,Ib");
    IEMOP_BODY_BINARY_Eb_Ib_RW(sub, RT_ARCH_VAL_AMD64 | RT_ARCH_VAL_ARM64, 0);
}


/**
 * @opmaps      grp1_80,grp1_83
 * @opcode      /6
 * @opflclass   logical
 */
FNIEMOP_DEF_1(iemOp_Grp1_xor_Eb_Ib, uint8_t, bRm)
{
    IEMOP_MNEMONIC(xor_Eb_Ib, "xor Eb,Ib");
    IEMOP_BODY_BINARY_Eb_Ib_RW(xor, RT_ARCH_VAL_AMD64 | RT_ARCH_VAL_ARM64, 0);
}


/**
 * @opmaps      grp1_80,grp1_83
 * @opcode      /7
 * @opflclass   arithmetic
 */
FNIEMOP_DEF_1(iemOp_Grp1_cmp_Eb_Ib, uint8_t, bRm)
{
    IEMOP_MNEMONIC(cmp_Eb_Ib, "cmp Eb,Ib");
    IEMOP_BODY_BINARY_Eb_Ib_RO(cmp, RT_ARCH_VAL_AMD64 | RT_ARCH_VAL_ARM64);
}


/**
 * @opcode      0x80
 */
FNIEMOP_DEF(iemOp_Grp1_Eb_Ib_80)
{
    uint8_t bRm; IEM_OPCODE_GET_NEXT_U8(&bRm);
    switch (IEM_GET_MODRM_REG_8(bRm))
    {
        case 0: return FNIEMOP_CALL_1(iemOp_Grp1_add_Eb_Ib, bRm);
        case 1: return FNIEMOP_CALL_1(iemOp_Grp1_or_Eb_Ib,  bRm);
        case 2: return FNIEMOP_CALL_1(iemOp_Grp1_adc_Eb_Ib, bRm);
        case 3: return FNIEMOP_CALL_1(iemOp_Grp1_sbb_Eb_Ib, bRm);
        case 4: return FNIEMOP_CALL_1(iemOp_Grp1_and_Eb_Ib, bRm);
        case 5: return FNIEMOP_CALL_1(iemOp_Grp1_sub_Eb_Ib, bRm);
        case 6: return FNIEMOP_CALL_1(iemOp_Grp1_xor_Eb_Ib, bRm);
        case 7: return FNIEMOP_CALL_1(iemOp_Grp1_cmp_Eb_Ib, bRm);
        IEM_NOT_REACHED_DEFAULT_CASE_RET();
    }
}


/**
 * Body for a group 1 binary operator.
 */
#define IEMOP_BODY_BINARY_Ev_Iz_RW(a_InsNm, a_fRegNativeArchs, a_fMemNativeArchs) \
    if (IEM_IS_MODRM_REG_MODE(bRm)) \
    { \
        /* register target */ \
        switch (pVCpu->iem.s.enmEffOpSize) \
        { \
            case IEMMODE_16BIT: \
            { \
                IEM_MC_BEGIN(0, 0); \
                uint16_t u16Imm; IEM_OPCODE_GET_NEXT_U16(&u16Imm); \
                IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX(); \
                IEM_MC_NATIVE_IF(a_fRegNativeArchs) { \
                    IEM_MC_LOCAL(uint16_t,      u16Dst); \
                    IEM_MC_FETCH_GREG_U16(u16Dst, IEM_GET_MODRM_RM(pVCpu, bRm)); \
                    IEM_MC_LOCAL(uint32_t,      uEFlags); \
                    IEM_MC_FETCH_EFLAGS(uEFlags); \
                    IEM_MC_NATIVE_EMIT_5(RT_CONCAT3(iemNativeEmit_,a_InsNm,_r_i_efl), u16Dst, u16Imm, uEFlags, 16, 16); \
                    IEM_MC_STORE_GREG_U16(IEM_GET_MODRM_RM(pVCpu, bRm), u16Dst); \
                    IEM_MC_COMMIT_EFLAGS_OPT(uEFlags); \
                } IEM_MC_NATIVE_ELSE() { \
                    IEM_MC_ARG(uint16_t *,      pu16Dst,                1); \
                    IEM_MC_REF_GREG_U16(pu16Dst, IEM_GET_MODRM_RM(pVCpu, bRm)); \
                    IEM_MC_ARG_EFLAGS(          fEFlagsIn,              0); \
                    IEM_MC_ARG_CONST(uint16_t,  u16Src, /*=*/ u16Imm,   2); \
                    IEM_MC_CALL_AIMPL_3(uint32_t, fEFlagsRet, RT_CONCAT3(iemAImpl_,a_InsNm,_u16), fEFlagsIn, pu16Dst, u16Src); \
                    IEM_MC_COMMIT_EFLAGS(fEFlagsRet); \
                } IEM_MC_NATIVE_ENDIF(); \
                IEM_MC_ADVANCE_RIP_AND_FINISH(); \
                IEM_MC_END(); \
                break; \
            } \
            \
            case IEMMODE_32BIT: \
            { \
                IEM_MC_BEGIN(IEM_MC_F_MIN_386, 0); \
                uint32_t u32Imm; IEM_OPCODE_GET_NEXT_U32(&u32Imm); \
                IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX(); \
                IEM_MC_NATIVE_IF(a_fRegNativeArchs) { \
                    IEM_MC_LOCAL(uint32_t,      u32Dst); \
                    IEM_MC_FETCH_GREG_U32(u32Dst, IEM_GET_MODRM_RM(pVCpu, bRm)); \
                    IEM_MC_LOCAL(uint32_t,      uEFlags); \
                    IEM_MC_FETCH_EFLAGS(uEFlags); \
                    IEM_MC_NATIVE_EMIT_5(RT_CONCAT3(iemNativeEmit_,a_InsNm,_r_i_efl), u32Dst, u32Imm, uEFlags, 32, 32); \
                    IEM_MC_STORE_GREG_U32(IEM_GET_MODRM_RM(pVCpu, bRm), u32Dst); \
                    IEM_MC_COMMIT_EFLAGS_OPT(uEFlags); \
                } IEM_MC_NATIVE_ELSE() { \
                    IEM_MC_ARG(uint32_t *,      pu32Dst,                1); \
                    IEM_MC_REF_GREG_U32(pu32Dst, IEM_GET_MODRM_RM(pVCpu, bRm)); \
                    IEM_MC_ARG_EFLAGS(          fEFlagsIn,              0); \
                    IEM_MC_ARG_CONST(uint32_t,  u32Src, /*=*/ u32Imm,   2); \
                    IEM_MC_CALL_AIMPL_3(uint32_t, fEFlagsRet, RT_CONCAT3(iemAImpl_,a_InsNm,_u32), fEFlagsIn, pu32Dst, u32Src); \
                    IEM_MC_CLEAR_HIGH_GREG_U64(IEM_GET_MODRM_RM(pVCpu, bRm)); \
                    IEM_MC_COMMIT_EFLAGS(fEFlagsRet); \
                } IEM_MC_NATIVE_ENDIF(); \
                IEM_MC_ADVANCE_RIP_AND_FINISH(); \
                IEM_MC_END(); \
                break; \
            } \
            \
            case IEMMODE_64BIT: \
            { \
                IEM_MC_BEGIN(IEM_MC_F_64BIT, 0); \
                uint64_t u64Imm; IEM_OPCODE_GET_NEXT_S32_SX_U64(&u64Imm); \
                IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX(); \
                IEM_MC_NATIVE_IF(a_fRegNativeArchs) { \
                    IEM_MC_LOCAL(uint64_t,      u64Dst); \
                    IEM_MC_FETCH_GREG_U64(u64Dst, IEM_GET_MODRM_RM(pVCpu, bRm)); \
                    IEM_MC_LOCAL(uint32_t,      uEFlags); \
                    IEM_MC_FETCH_EFLAGS(uEFlags); \
                    IEM_MC_NATIVE_EMIT_5(RT_CONCAT3(iemNativeEmit_,a_InsNm,_r_i_efl), u64Dst, u64Imm, uEFlags, 64, 32); \
                    IEM_MC_STORE_GREG_U64(IEM_GET_MODRM_RM(pVCpu, bRm), u64Dst); \
                    IEM_MC_COMMIT_EFLAGS_OPT(uEFlags); \
                } IEM_MC_NATIVE_ELSE() { \
                    IEM_MC_ARG(uint64_t *,      pu64Dst,                1); \
                    IEM_MC_REF_GREG_U64(pu64Dst, IEM_GET_MODRM_RM(pVCpu, bRm)); \
                    IEM_MC_ARG_EFLAGS(          fEFlagsIn,              0); \
                    IEM_MC_ARG_CONST(uint64_t,  u64Src, /*=*/ u64Imm,   2); \
                    IEM_MC_CALL_AIMPL_3(uint32_t, fEFlagsRet, RT_CONCAT3(iemAImpl_,a_InsNm,_u64), fEFlagsIn, pu64Dst, u64Src); \
                    IEM_MC_COMMIT_EFLAGS(fEFlagsRet); \
                } IEM_MC_NATIVE_ENDIF(); \
                IEM_MC_ADVANCE_RIP_AND_FINISH(); \
                IEM_MC_END(); \
                break; \
            } \
            \
            IEM_NOT_REACHED_DEFAULT_CASE_RET(); \
        } \
    } \
    else \
    { \
        /* memory target */ \
        if (!(pVCpu->iem.s.fPrefixes & IEM_OP_PRF_LOCK) || (pVCpu->iem.s.fExec & IEM_F_X86_DISREGARD_LOCK)) \
        { \
            switch (pVCpu->iem.s.enmEffOpSize) \
            { \
                case IEMMODE_16BIT: \
                { \
                    IEM_MC_BEGIN(0, 0); \
                    IEM_MC_LOCAL(RTGCPTR, GCPtrEffDst); \
                    IEM_MC_CALC_RM_EFF_ADDR(GCPtrEffDst, bRm, 2); \
                    \
                    uint16_t u16Imm; IEM_OPCODE_GET_NEXT_U16(&u16Imm); \
                    IEMOP_HLP_DONE_DECODING(); \
                    \
                    IEM_MC_LOCAL(uint8_t,       bUnmapInfo); \
                    IEM_MC_ARG(uint16_t *,      pu16Dst,                1); \
                    IEM_MC_MEM_MAP_U16_RW(pu16Dst, bUnmapInfo, pVCpu->iem.s.iEffSeg, GCPtrEffDst); \
                    \
                    IEM_MC_ARG_CONST(uint16_t,  u16Src,  u16Imm,        2); \
                    IEM_MC_ARG_EFLAGS(          fEFlagsIn,              0); \
                    IEM_MC_CALL_AIMPL_3(uint32_t, fEFlagsRet, RT_CONCAT3(iemAImpl_,a_InsNm,_u16), fEFlagsIn, pu16Dst, u16Src); \
                    \
                    IEM_MC_MEM_COMMIT_AND_UNMAP_RW(bUnmapInfo); \
                    IEM_MC_COMMIT_EFLAGS(fEFlagsRet); \
                    IEM_MC_ADVANCE_RIP_AND_FINISH(); \
                    IEM_MC_END(); \
                    break; \
                } \
                \
                case IEMMODE_32BIT: \
                { \
                    IEM_MC_BEGIN(IEM_MC_F_MIN_386, 0); \
                    IEM_MC_LOCAL(RTGCPTR, GCPtrEffDst); \
                    IEM_MC_CALC_RM_EFF_ADDR(GCPtrEffDst, bRm, 4); \
                    \
                    uint32_t u32Imm; IEM_OPCODE_GET_NEXT_U32(&u32Imm); \
                    IEMOP_HLP_DONE_DECODING(); \
                    \
                    IEM_MC_LOCAL(uint8_t,       bUnmapInfo); \
                    IEM_MC_ARG(uint32_t *,      pu32Dst,                1); \
                    IEM_MC_MEM_MAP_U32_RW(pu32Dst, bUnmapInfo, pVCpu->iem.s.iEffSeg, GCPtrEffDst); \
                    \
                    IEM_MC_ARG_CONST(uint32_t,  u32Src,     u32Imm,     2); \
                    IEM_MC_ARG_EFLAGS(          fEFlagsIn,              0); \
                    IEM_MC_CALL_AIMPL_3(uint32_t, fEFlagsRet, RT_CONCAT3(iemAImpl_,a_InsNm,_u32), fEFlagsIn, pu32Dst, u32Src); \
                    \
                    IEM_MC_MEM_COMMIT_AND_UNMAP_RW(bUnmapInfo); \
                    IEM_MC_COMMIT_EFLAGS(fEFlagsRet); \
                    IEM_MC_ADVANCE_RIP_AND_FINISH(); \
                    IEM_MC_END(); \
                    break; \
                } \
                \
                case IEMMODE_64BIT: \
                { \
                    IEM_MC_BEGIN(IEM_MC_F_64BIT, 0); \
                    \
                    IEM_MC_LOCAL(RTGCPTR, GCPtrEffDst); \
                    IEM_MC_CALC_RM_EFF_ADDR(GCPtrEffDst, bRm, 4); \
                    \
                    uint64_t u64Imm; IEM_OPCODE_GET_NEXT_S32_SX_U64(&u64Imm); \
                    IEMOP_HLP_DONE_DECODING(); \
                    \
                    IEM_MC_LOCAL(uint8_t,       bUnmapInfo); \
                    IEM_MC_ARG(uint64_t *,      pu64Dst,                1); \
                    IEM_MC_MEM_MAP_U64_RW(pu64Dst, bUnmapInfo, pVCpu->iem.s.iEffSeg, GCPtrEffDst); \
                    \
                    IEM_MC_ARG_CONST(uint64_t,  u64Src,  u64Imm,        2); \
                    IEM_MC_ARG_EFLAGS(          fEFlagsIn,              0); \
                    IEM_MC_CALL_AIMPL_3(uint32_t, fEFlagsRet, RT_CONCAT3(iemAImpl_,a_InsNm,_u64), fEFlagsIn, pu64Dst, u64Src); \
                    \
                    IEM_MC_MEM_COMMIT_AND_UNMAP_RW(bUnmapInfo); \
                    IEM_MC_COMMIT_EFLAGS(fEFlagsRet); \
                    IEM_MC_ADVANCE_RIP_AND_FINISH(); \
                    IEM_MC_END(); \
                    break; \
                } \
                \
                IEM_NOT_REACHED_DEFAULT_CASE_RET(); \
            } \
        } \
        else \
        { \
            switch (pVCpu->iem.s.enmEffOpSize) \
            { \
                case IEMMODE_16BIT: \
                { \
                    IEM_MC_BEGIN(0, 0); \
                    IEM_MC_LOCAL(RTGCPTR, GCPtrEffDst); \
                    IEM_MC_CALC_RM_EFF_ADDR(GCPtrEffDst, bRm, 2); \
                    \
                    uint16_t u16Imm; IEM_OPCODE_GET_NEXT_U16(&u16Imm); \
                    IEMOP_HLP_DONE_DECODING(); \
                    \
                    IEM_MC_LOCAL(uint8_t,       bUnmapInfo); \
                    IEM_MC_ARG(uint16_t *,      pu16Dst,                1); \
                    IEM_MC_MEM_MAP_U16_ATOMIC(pu16Dst, bUnmapInfo, pVCpu->iem.s.iEffSeg, GCPtrEffDst); \
                    \
                    IEM_MC_ARG_CONST(uint16_t,  u16Src,  u16Imm,        2); \
                    IEM_MC_ARG_EFLAGS(          fEFlagsIn,              0); \
                    IEM_MC_CALL_AIMPL_3(uint32_t, fEFlagsRet, RT_CONCAT3(iemAImpl_,a_InsNm,_u16_locked), fEFlagsIn, pu16Dst, u16Src); \
                    \
                    IEM_MC_MEM_COMMIT_AND_UNMAP_ATOMIC(bUnmapInfo); \
                    IEM_MC_COMMIT_EFLAGS(fEFlagsRet); \
                    IEM_MC_ADVANCE_RIP_AND_FINISH(); \
                    IEM_MC_END(); \
                    break; \
                } \
                \
                case IEMMODE_32BIT: \
                { \
                    IEM_MC_BEGIN(IEM_MC_F_MIN_386, 0); \
                    IEM_MC_LOCAL(RTGCPTR, GCPtrEffDst); \
                    IEM_MC_CALC_RM_EFF_ADDR(GCPtrEffDst, bRm, 4); \
                    \
                    uint32_t u32Imm; IEM_OPCODE_GET_NEXT_U32(&u32Imm); \
                    IEMOP_HLP_DONE_DECODING(); \
                    \
                    IEM_MC_LOCAL(uint8_t,       bUnmapInfo); \
                    IEM_MC_ARG(uint32_t *,      pu32Dst,                1); \
                    IEM_MC_MEM_MAP_U32_ATOMIC(pu32Dst, bUnmapInfo, pVCpu->iem.s.iEffSeg, GCPtrEffDst); \
                    \
                    IEM_MC_ARG_CONST(uint32_t,  u32Src,  u32Imm,        2); \
                    IEM_MC_ARG_EFLAGS(          fEFlagsIn,              0); \
                    IEM_MC_CALL_AIMPL_3(uint32_t, fEFlagsRet, RT_CONCAT3(iemAImpl_,a_InsNm,_u32_locked), fEFlagsIn, pu32Dst, u32Src); \
                    \
                    IEM_MC_MEM_COMMIT_AND_UNMAP_ATOMIC(bUnmapInfo); \
                    IEM_MC_COMMIT_EFLAGS(fEFlagsRet); \
                    IEM_MC_ADVANCE_RIP_AND_FINISH(); \
                    IEM_MC_END(); \
                    break; \
                } \
                \
                case IEMMODE_64BIT: \
                { \
                    IEM_MC_BEGIN(IEM_MC_F_64BIT, 0); \
                    IEM_MC_LOCAL(RTGCPTR, GCPtrEffDst); \
                    IEM_MC_CALC_RM_EFF_ADDR(GCPtrEffDst, bRm, 4); \
                    \
                    uint64_t u64Imm; IEM_OPCODE_GET_NEXT_S32_SX_U64(&u64Imm); \
                    IEMOP_HLP_DONE_DECODING(); \
                    \
                    IEM_MC_LOCAL(uint8_t,       bUnmapInfo); \
                    IEM_MC_ARG(uint64_t *,      pu64Dst,                1); \
                    IEM_MC_MEM_MAP_U64_ATOMIC(pu64Dst, bUnmapInfo, pVCpu->iem.s.iEffSeg, GCPtrEffDst); \
                    \
                    IEM_MC_ARG_CONST(uint64_t,  u64Src,  u64Imm,        2); \
                    IEM_MC_ARG_EFLAGS(          fEFlagsIn,              0); \
                    IEM_MC_CALL_AIMPL_3(uint32_t, fEFlagsRet, RT_CONCAT3(iemAImpl_,a_InsNm,_u64_locked), fEFlagsIn, pu64Dst, u64Src); \
                    \
                    IEM_MC_MEM_COMMIT_AND_UNMAP_ATOMIC(bUnmapInfo); \
                    IEM_MC_COMMIT_EFLAGS(fEFlagsRet); \
                    IEM_MC_ADVANCE_RIP_AND_FINISH(); \
                    IEM_MC_END(); \
                    break; \
                } \
                \
                IEM_NOT_REACHED_DEFAULT_CASE_RET(); \
            } \
        } \
    } \
    (void)0

/* read-only version */
#define IEMOP_BODY_BINARY_Ev_Iz_RO(a_InsNm, a_fNativeArchs) \
    if (IEM_IS_MODRM_REG_MODE(bRm)) \
    { \
        /* register target */ \
        switch (pVCpu->iem.s.enmEffOpSize) \
        { \
            case IEMMODE_16BIT: \
            { \
                IEM_MC_BEGIN(0, 0); \
                uint16_t u16Imm; IEM_OPCODE_GET_NEXT_U16(&u16Imm); \
                IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX(); \
                IEM_MC_NATIVE_IF(a_fNativeArchs) { \
                    IEM_MC_LOCAL(uint16_t,      u16Dst); \
                    IEM_MC_FETCH_GREG_U16(u16Dst, IEM_GET_MODRM_RM(pVCpu, bRm)); \
                    IEM_MC_LOCAL(uint32_t,      uEFlags); \
                    IEM_MC_FETCH_EFLAGS(uEFlags); \
                    IEM_MC_NATIVE_EMIT_5(RT_CONCAT3(iemNativeEmit_,a_InsNm,_r_i_efl), u16Dst, u16Imm, uEFlags, 16, 16); \
                    IEM_MC_COMMIT_EFLAGS_OPT(uEFlags); \
                } IEM_MC_NATIVE_ELSE() { \
                    IEM_MC_ARG(uint16_t const *,pu16Dst,                1); \
                    IEM_MC_REF_GREG_U16_CONST(pu16Dst, IEM_GET_MODRM_RM(pVCpu, bRm)); \
                    IEM_MC_ARG_EFLAGS(          fEFlagsIn,              0); \
                    IEM_MC_ARG_CONST(uint16_t,  u16Src, /*=*/ u16Imm,   2); \
                    IEM_MC_CALL_AIMPL_3(uint32_t, fEFlagsRet, RT_CONCAT3(iemAImpl_,a_InsNm,_u16), fEFlagsIn, pu16Dst, u16Src); \
                    IEM_MC_COMMIT_EFLAGS(fEFlagsRet); \
                } IEM_MC_NATIVE_ENDIF(); \
                IEM_MC_ADVANCE_RIP_AND_FINISH(); \
                IEM_MC_END(); \
                break; \
            } \
            \
            case IEMMODE_32BIT: \
            { \
                IEM_MC_BEGIN(IEM_MC_F_MIN_386, 0); \
                uint32_t u32Imm; IEM_OPCODE_GET_NEXT_U32(&u32Imm); \
                IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX(); \
                IEM_MC_NATIVE_IF(a_fNativeArchs) { \
                    IEM_MC_LOCAL(uint32_t,      u32Dst); \
                    IEM_MC_FETCH_GREG_U32(u32Dst, IEM_GET_MODRM_RM(pVCpu, bRm)); \
                    IEM_MC_LOCAL(uint32_t,      uEFlags); \
                    IEM_MC_FETCH_EFLAGS(uEFlags); \
                    IEM_MC_NATIVE_EMIT_5(RT_CONCAT3(iemNativeEmit_,a_InsNm,_r_i_efl), u32Dst, u32Imm, uEFlags, 32, 32); \
                    IEM_MC_COMMIT_EFLAGS_OPT(uEFlags); \
                } IEM_MC_NATIVE_ELSE() { \
                    IEM_MC_ARG(uint32_t const *,pu32Dst,                1); \
                    IEM_MC_REF_GREG_U32_CONST (pu32Dst, IEM_GET_MODRM_RM(pVCpu, bRm)); \
                    IEM_MC_ARG_EFLAGS(          fEFlagsIn,              0); \
                    IEM_MC_ARG_CONST(uint32_t,  u32Src, /*=*/ u32Imm,   2); \
                    IEM_MC_CALL_AIMPL_3(uint32_t, fEFlagsRet, RT_CONCAT3(iemAImpl_,a_InsNm,_u32), fEFlagsIn, pu32Dst, u32Src); \
                    IEM_MC_COMMIT_EFLAGS(fEFlagsRet); \
                } IEM_MC_NATIVE_ENDIF(); \
                IEM_MC_ADVANCE_RIP_AND_FINISH(); \
                IEM_MC_END(); \
                break; \
            } \
            \
            case IEMMODE_64BIT: \
            { \
                IEM_MC_BEGIN(IEM_MC_F_64BIT, 0); \
                uint64_t u64Imm; IEM_OPCODE_GET_NEXT_S32_SX_U64(&u64Imm); \
                IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX(); \
                IEM_MC_NATIVE_IF(a_fNativeArchs) { \
                    IEM_MC_LOCAL(uint64_t,      u64Dst); \
                    IEM_MC_FETCH_GREG_U64(u64Dst, IEM_GET_MODRM_RM(pVCpu, bRm)); \
                    IEM_MC_LOCAL(uint32_t,      uEFlags); \
                    IEM_MC_FETCH_EFLAGS(uEFlags); \
                    IEM_MC_NATIVE_EMIT_5(RT_CONCAT3(iemNativeEmit_,a_InsNm,_r_i_efl), u64Dst, u64Imm, uEFlags, 64, 32); \
                    IEM_MC_COMMIT_EFLAGS_OPT(uEFlags); \
                } IEM_MC_NATIVE_ELSE() { \
                    IEM_MC_ARG(uint64_t const *,pu64Dst,                1); \
                    IEM_MC_REF_GREG_U64_CONST(pu64Dst, IEM_GET_MODRM_RM(pVCpu, bRm)); \
                    IEM_MC_ARG_EFLAGS(          fEFlagsIn,              0); \
                    IEM_MC_ARG_CONST(uint64_t,  u64Src, /*=*/ u64Imm,   2); \
                    IEM_MC_CALL_AIMPL_3(uint32_t, fEFlagsRet, RT_CONCAT3(iemAImpl_,a_InsNm,_u64), fEFlagsIn, pu64Dst, u64Src); \
                    IEM_MC_COMMIT_EFLAGS(fEFlagsRet); \
                } IEM_MC_NATIVE_ENDIF(); \
                IEM_MC_ADVANCE_RIP_AND_FINISH(); \
                IEM_MC_END(); \
                break; \
            } \
            \
            IEM_NOT_REACHED_DEFAULT_CASE_RET(); \
        } \
    } \
    else \
    { \
        /* memory target */ \
        if (!(pVCpu->iem.s.fPrefixes & IEM_OP_PRF_LOCK) || (pVCpu->iem.s.fExec & IEM_F_X86_DISREGARD_LOCK)) \
        { \
            switch (pVCpu->iem.s.enmEffOpSize) \
            { \
                case IEMMODE_16BIT: \
                { \
                    IEM_MC_BEGIN(0, 0); \
                    IEM_MC_LOCAL(RTGCPTR, GCPtrEffDst); \
                    IEM_MC_CALC_RM_EFF_ADDR(GCPtrEffDst, bRm, 2); \
                    uint16_t u16Imm; IEM_OPCODE_GET_NEXT_U16(&u16Imm); \
                    IEMOP_HLP_DONE_DECODING(); \
                    IEM_MC_NATIVE_IF(a_fNativeArchs) { \
                        IEM_MC_LOCAL(uint16_t,      u16Dst); \
                        IEM_MC_FETCH_MEM_U16(u16Dst, pVCpu->iem.s.iEffSeg, GCPtrEffDst); \
                        IEM_MC_LOCAL_EFLAGS(uEFlags); \
                        IEM_MC_NATIVE_EMIT_5(RT_CONCAT3(iemNativeEmit_,a_InsNm,_r_i_efl), u16Dst, u16Imm, uEFlags, 16, 16); \
                        IEM_MC_COMMIT_EFLAGS_OPT(uEFlags); \
                    } IEM_MC_NATIVE_ELSE() { \
                        IEM_MC_LOCAL(uint8_t,        bUnmapInfo); \
                        IEM_MC_ARG(uint16_t const *, pu16Dst,               1); \
                        IEM_MC_MEM_MAP_U16_RO(pu16Dst, bUnmapInfo, pVCpu->iem.s.iEffSeg, GCPtrEffDst); \
                        IEM_MC_ARG_EFLAGS(           fEFlagsIn,             0); \
                        IEM_MC_ARG_CONST(uint16_t,   u16Src,  u16Imm,       2); \
                        IEM_MC_CALL_AIMPL_3(uint32_t, fEFlagsRet, RT_CONCAT3(iemAImpl_,a_InsNm,_u16), fEFlagsIn, pu16Dst, u16Src); \
                        IEM_MC_MEM_COMMIT_AND_UNMAP_RO(bUnmapInfo); \
                        IEM_MC_COMMIT_EFLAGS(fEFlagsRet); \
                    } IEM_MC_NATIVE_ENDIF(); \
                    IEM_MC_ADVANCE_RIP_AND_FINISH(); \
                    IEM_MC_END(); \
                    break; \
                } \
                \
                case IEMMODE_32BIT: \
                { \
                    IEM_MC_BEGIN(IEM_MC_F_MIN_386, 0); \
                    IEM_MC_LOCAL(RTGCPTR, GCPtrEffDst); \
                    IEM_MC_CALC_RM_EFF_ADDR(GCPtrEffDst, bRm, 4); \
                    uint32_t u32Imm; IEM_OPCODE_GET_NEXT_U32(&u32Imm); \
                    IEMOP_HLP_DONE_DECODING(); \
                    IEM_MC_NATIVE_IF(a_fNativeArchs) { \
                        IEM_MC_LOCAL(uint32_t,      u32Dst); \
                        IEM_MC_FETCH_MEM_U32(u32Dst, pVCpu->iem.s.iEffSeg, GCPtrEffDst); \
                        IEM_MC_LOCAL_EFLAGS(uEFlags); \
                        IEM_MC_NATIVE_EMIT_5(RT_CONCAT3(iemNativeEmit_,a_InsNm,_r_i_efl), u32Dst, u32Imm, uEFlags, 32, 32); \
                        IEM_MC_COMMIT_EFLAGS_OPT(uEFlags); \
                    } IEM_MC_NATIVE_ELSE() { \
                        IEM_MC_LOCAL(uint8_t,        bUnmapInfo); \
                        IEM_MC_ARG(uint32_t const *, pu32Dst,               1); \
                        IEM_MC_MEM_MAP_U32_RO(pu32Dst, bUnmapInfo, pVCpu->iem.s.iEffSeg, GCPtrEffDst); \
                        IEM_MC_ARG_EFLAGS(           fEFlagsIn,             0); \
                        IEM_MC_ARG_CONST(uint32_t,   u32Src,  u32Imm,       2); \
                        IEM_MC_CALL_AIMPL_3(uint32_t, fEFlagsRet, RT_CONCAT3(iemAImpl_,a_InsNm,_u32), fEFlagsIn, pu32Dst, u32Src); \
                        IEM_MC_MEM_COMMIT_AND_UNMAP_RO(bUnmapInfo); \
                        IEM_MC_COMMIT_EFLAGS(fEFlagsRet); \
                    } IEM_MC_NATIVE_ENDIF(); \
                    IEM_MC_ADVANCE_RIP_AND_FINISH(); \
                    IEM_MC_END(); \
                    break; \
                } \
                \
                case IEMMODE_64BIT: \
                { \
                    IEM_MC_BEGIN(IEM_MC_F_64BIT, 0); \
                    IEM_MC_LOCAL(RTGCPTR, GCPtrEffDst); \
                    IEM_MC_CALC_RM_EFF_ADDR(GCPtrEffDst, bRm, 4); \
                    uint64_t u64Imm; IEM_OPCODE_GET_NEXT_S32_SX_U64(&u64Imm); \
                    IEMOP_HLP_DONE_DECODING(); \
                    IEM_MC_NATIVE_IF(a_fNativeArchs) { \
                        IEM_MC_LOCAL(uint64_t,      u64Dst); \
                        IEM_MC_FETCH_MEM_U64(u64Dst, pVCpu->iem.s.iEffSeg, GCPtrEffDst); \
                        IEM_MC_LOCAL_EFLAGS(        uEFlags); \
                        IEM_MC_NATIVE_EMIT_5(RT_CONCAT3(iemNativeEmit_,a_InsNm,_r_i_efl), u64Dst, u64Imm, uEFlags, 64, 32); \
                        IEM_MC_COMMIT_EFLAGS_OPT(uEFlags); \
                    } IEM_MC_NATIVE_ELSE() { \
                        IEM_MC_LOCAL(uint8_t,        bUnmapInfo); \
                        IEM_MC_ARG(uint64_t const *, pu64Dst,               1); \
                        IEM_MC_MEM_MAP_U64_RO(pu64Dst, bUnmapInfo, pVCpu->iem.s.iEffSeg, GCPtrEffDst); \
                        IEM_MC_ARG_EFLAGS(           fEFlagsIn,             0); \
                        IEM_MC_ARG_CONST(uint64_t,   u64Src,  u64Imm,       2); \
                        IEM_MC_CALL_AIMPL_3(uint32_t, fEFlagsRet, RT_CONCAT3(iemAImpl_,a_InsNm,_u64), fEFlagsIn, pu64Dst, u64Src); \
                        IEM_MC_MEM_COMMIT_AND_UNMAP_RO(bUnmapInfo); \
                        IEM_MC_COMMIT_EFLAGS(fEFlagsRet); \
                    } IEM_MC_NATIVE_ENDIF(); \
                    IEM_MC_ADVANCE_RIP_AND_FINISH(); \
                    IEM_MC_END(); \
                    break; \
                } \
                \
                IEM_NOT_REACHED_DEFAULT_CASE_RET(); \
            } \
        } \
        else \
        { \
            IEMOP_HLP_DONE_DECODING(); \
            IEMOP_RAISE_INVALID_LOCK_PREFIX_RET(); \
        } \
    } \
    (void)0


/**
 * @opmaps      grp1_81
 * @opcode      /0
 * @opflclass   arithmetic
 */
FNIEMOP_DEF_1(iemOp_Grp1_add_Ev_Iz, uint8_t, bRm)
{
    IEMOP_MNEMONIC(add_Ev_Iz, "add Ev,Iz");
    IEMOP_BODY_BINARY_Ev_Iz_RW(add, RT_ARCH_VAL_AMD64 | RT_ARCH_VAL_ARM64, 0);
}


/**
 * @opmaps      grp1_81
 * @opcode      /1
 * @opflclass   logical
 */
FNIEMOP_DEF_1(iemOp_Grp1_or_Ev_Iz, uint8_t, bRm)
{
    IEMOP_MNEMONIC(or_Ev_Iz, "or Ev,Iz");
    IEMOP_BODY_BINARY_Ev_Iz_RW(or, RT_ARCH_VAL_AMD64 | RT_ARCH_VAL_ARM64, 0);
}


/**
 * @opmaps      grp1_81
 * @opcode      /2
 * @opflclass   arithmetic_carry
 */
FNIEMOP_DEF_1(iemOp_Grp1_adc_Ev_Iz, uint8_t, bRm)
{
    IEMOP_MNEMONIC(adc_Ev_Iz, "adc Ev,Iz");
    IEMOP_BODY_BINARY_Ev_Iz_RW(adc, RT_ARCH_VAL_AMD64 | RT_ARCH_VAL_ARM64, 0);
}


/**
 * @opmaps      grp1_81
 * @opcode      /3
 * @opflclass   arithmetic_carry
 */
FNIEMOP_DEF_1(iemOp_Grp1_sbb_Ev_Iz, uint8_t, bRm)
{
    IEMOP_MNEMONIC(sbb_Ev_Iz, "sbb Ev,Iz");
    IEMOP_BODY_BINARY_Ev_Iz_RW(sbb, RT_ARCH_VAL_AMD64 | RT_ARCH_VAL_ARM64, 0);
}


/**
 * @opmaps      grp1_81
 * @opcode      /4
 * @opflclass   logical
 */
FNIEMOP_DEF_1(iemOp_Grp1_and_Ev_Iz, uint8_t, bRm)
{
    IEMOP_MNEMONIC(and_Ev_Iz, "and Ev,Iz");
    IEMOP_BODY_BINARY_Ev_Iz_RW(and, RT_ARCH_VAL_AMD64 | RT_ARCH_VAL_ARM64, 0);
}


/**
 * @opmaps      grp1_81
 * @opcode      /5
 * @opflclass   arithmetic
 */
FNIEMOP_DEF_1(iemOp_Grp1_sub_Ev_Iz, uint8_t, bRm)
{
    IEMOP_MNEMONIC(sub_Ev_Iz, "sub Ev,Iz");
    IEMOP_BODY_BINARY_Ev_Iz_RW(sub, RT_ARCH_VAL_AMD64 | RT_ARCH_VAL_ARM64, 0);
}


/**
 * @opmaps      grp1_81
 * @opcode      /6
 * @opflclass   logical
 */
FNIEMOP_DEF_1(iemOp_Grp1_xor_Ev_Iz, uint8_t, bRm)
{
    IEMOP_MNEMONIC(xor_Ev_Iz, "xor Ev,Iz");
    IEMOP_BODY_BINARY_Ev_Iz_RW(xor, RT_ARCH_VAL_AMD64 | RT_ARCH_VAL_ARM64, 0);
}


/**
 * @opmaps      grp1_81
 * @opcode      /7
 * @opflclass   arithmetic
 */
FNIEMOP_DEF_1(iemOp_Grp1_cmp_Ev_Iz, uint8_t, bRm)
{
    IEMOP_MNEMONIC(cmp_Ev_Iz, "cmp Ev,Iz");
    IEMOP_BODY_BINARY_Ev_Iz_RO(cmp, RT_ARCH_VAL_AMD64 | RT_ARCH_VAL_ARM64);
}


/**
 * @opcode      0x81
 */
FNIEMOP_DEF(iemOp_Grp1_Ev_Iz)
{
    uint8_t bRm; IEM_OPCODE_GET_NEXT_U8(&bRm);
    switch (IEM_GET_MODRM_REG_8(bRm))
    {
        case 0: return FNIEMOP_CALL_1(iemOp_Grp1_add_Ev_Iz, bRm);
        case 1: return FNIEMOP_CALL_1(iemOp_Grp1_or_Ev_Iz,  bRm);
        case 2: return FNIEMOP_CALL_1(iemOp_Grp1_adc_Ev_Iz, bRm);
        case 3: return FNIEMOP_CALL_1(iemOp_Grp1_sbb_Ev_Iz, bRm);
        case 4: return FNIEMOP_CALL_1(iemOp_Grp1_and_Ev_Iz, bRm);
        case 5: return FNIEMOP_CALL_1(iemOp_Grp1_sub_Ev_Iz, bRm);
        case 6: return FNIEMOP_CALL_1(iemOp_Grp1_xor_Ev_Iz, bRm);
        case 7: return FNIEMOP_CALL_1(iemOp_Grp1_cmp_Ev_Iz, bRm);
        IEM_NOT_REACHED_DEFAULT_CASE_RET();
    }
}


/**
 * @opcode      0x82
 * @opmnemonic  grp1_82
 * @opgroup     og_groups
 */
FNIEMOP_DEF(iemOp_Grp1_Eb_Ib_82)
{
    IEMOP_HLP_NO_64BIT(); /** @todo do we need to decode the whole instruction or is this ok? */
    return FNIEMOP_CALL(iemOp_Grp1_Eb_Ib_80);
}


/**
 * Body for group 1 instruction (binary) w/ byte imm operand, dispatched via
 * iemOp_Grp1_Ev_Ib.
 */
#define IEMOP_BODY_BINARY_Ev_Ib_RW(a_InsNm, a_fRegNativeArchs, a_fMemNativeArchs) \
    if (IEM_IS_MODRM_REG_MODE(bRm)) \
    { \
        /* \
         * Register target \
         */ \
        uint8_t u8Imm; IEM_OPCODE_GET_NEXT_U8(&u8Imm); /* Not sign extending it here saves threaded function param space. */ \
        switch (pVCpu->iem.s.enmEffOpSize) \
        { \
            case IEMMODE_16BIT: \
                IEM_MC_BEGIN(0, 0); \
                IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX(); \
                IEM_MC_NATIVE_IF(a_fRegNativeArchs) { \
                    IEM_MC_LOCAL(uint16_t,      u16Dst); \
                    IEM_MC_FETCH_GREG_U16(u16Dst, IEM_GET_MODRM_RM(pVCpu, bRm)); \
                    IEM_MC_LOCAL(uint32_t,      uEFlags); \
                    IEM_MC_FETCH_EFLAGS(uEFlags); \
                    IEM_MC_NATIVE_EMIT_5(RT_CONCAT3(iemNativeEmit_,a_InsNm,_r_i_efl), u16Dst, (uint16_t)(int16_t)(int8_t)u8Imm, uEFlags, 16, 8); \
                    IEM_MC_STORE_GREG_U16(IEM_GET_MODRM_RM(pVCpu, bRm), u16Dst); \
                    IEM_MC_COMMIT_EFLAGS_OPT(uEFlags); \
                } IEM_MC_NATIVE_ELSE() { \
                    IEM_MC_ARG(uint16_t *,      pu16Dst,                                        1); \
                    IEM_MC_REF_GREG_U16(pu16Dst, IEM_GET_MODRM_RM(pVCpu, bRm)); \
                    IEM_MC_ARG_EFLAGS(          fEFlagsIn,                                      0); \
                    IEM_MC_ARG_CONST(uint16_t,  u16Src, /*=*/ (uint16_t)(int16_t)(int8_t)u8Imm, 2); \
                    IEM_MC_CALL_AIMPL_3(uint32_t, fEFlagsRet, RT_CONCAT3(iemAImpl_,a_InsNm,_u16), fEFlagsIn, pu16Dst, u16Src); \
                    IEM_MC_COMMIT_EFLAGS(fEFlagsRet); \
                } IEM_MC_NATIVE_ENDIF(); \
                IEM_MC_ADVANCE_RIP_AND_FINISH(); \
                IEM_MC_END(); \
                break; \
            \
            case IEMMODE_32BIT: \
                IEM_MC_BEGIN(IEM_MC_F_MIN_386, 0); \
                IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX(); \
                IEM_MC_NATIVE_IF(a_fRegNativeArchs) { \
                    IEM_MC_LOCAL(uint32_t,      u32Dst); \
                    IEM_MC_FETCH_GREG_U32(u32Dst, IEM_GET_MODRM_RM(pVCpu, bRm)); \
                    IEM_MC_LOCAL(uint32_t,      uEFlags); \
                    IEM_MC_FETCH_EFLAGS(uEFlags); \
                    IEM_MC_NATIVE_EMIT_5(RT_CONCAT3(iemNativeEmit_,a_InsNm,_r_i_efl), u32Dst, (uint32_t)(int32_t)(int8_t)u8Imm, uEFlags, 32, 8); \
                    IEM_MC_STORE_GREG_U32(IEM_GET_MODRM_RM(pVCpu, bRm), u32Dst); \
                    IEM_MC_COMMIT_EFLAGS_OPT(uEFlags); \
                } IEM_MC_NATIVE_ELSE() { \
                    IEM_MC_ARG(uint32_t *,      pu32Dst,                                        1); \
                    IEM_MC_REF_GREG_U32(pu32Dst, IEM_GET_MODRM_RM(pVCpu, bRm)); \
                    IEM_MC_ARG_EFLAGS(          fEFlagsIn,                                      0); \
                    IEM_MC_ARG_CONST(uint32_t,  u32Src, /*=*/ (uint32_t)(int32_t)(int8_t)u8Imm, 2); \
                    IEM_MC_CALL_AIMPL_3(uint32_t, fEFlagsRet, RT_CONCAT3(iemAImpl_,a_InsNm,_u32), fEFlagsIn, pu32Dst, u32Src); \
                    IEM_MC_CLEAR_HIGH_GREG_U64(IEM_GET_MODRM_RM(pVCpu, bRm)); \
                    IEM_MC_COMMIT_EFLAGS(fEFlagsRet); \
                } IEM_MC_NATIVE_ENDIF(); \
                IEM_MC_ADVANCE_RIP_AND_FINISH(); \
                IEM_MC_END(); \
                break; \
            \
            case IEMMODE_64BIT: \
                IEM_MC_BEGIN(IEM_MC_F_64BIT, 0); \
                IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX(); \
                IEM_MC_NATIVE_IF(a_fRegNativeArchs) { \
                    IEM_MC_LOCAL(uint64_t,      u64Dst); \
                    IEM_MC_FETCH_GREG_U64(u64Dst, IEM_GET_MODRM_RM(pVCpu, bRm)); \
                    IEM_MC_LOCAL(uint32_t,      uEFlags); \
                    IEM_MC_FETCH_EFLAGS(uEFlags); \
                    IEM_MC_NATIVE_EMIT_5(RT_CONCAT3(iemNativeEmit_,a_InsNm,_r_i_efl), u64Dst, (uint64_t)(int64_t)(int8_t)u8Imm, uEFlags, 64, 8); \
                    IEM_MC_STORE_GREG_U64(IEM_GET_MODRM_RM(pVCpu, bRm), u64Dst); \
                    IEM_MC_COMMIT_EFLAGS_OPT(uEFlags); \
                } IEM_MC_NATIVE_ELSE() { \
                    IEM_MC_ARG(uint64_t *,      pu64Dst,                                        1); \
                    IEM_MC_REF_GREG_U64(pu64Dst, IEM_GET_MODRM_RM(pVCpu, bRm)); \
                    IEM_MC_ARG_EFLAGS(          fEFlagsIn,                                      0); \
                    IEM_MC_ARG_CONST(uint64_t,  u64Src, /*=*/ (uint64_t)(int64_t)(int8_t)u8Imm, 2); \
                    IEM_MC_CALL_AIMPL_3(uint32_t, fEFlagsRet, RT_CONCAT3(iemAImpl_,a_InsNm,_u64), fEFlagsIn, pu64Dst, u64Src); \
                    IEM_MC_COMMIT_EFLAGS(fEFlagsRet); \
                } IEM_MC_NATIVE_ENDIF(); \
                IEM_MC_ADVANCE_RIP_AND_FINISH(); \
                IEM_MC_END(); \
                break; \
            \
            IEM_NOT_REACHED_DEFAULT_CASE_RET(); \
        } \
    } \
    else \
    { \
        /* \
         * Memory target. \
         */ \
        if (!(pVCpu->iem.s.fPrefixes & IEM_OP_PRF_LOCK) || (pVCpu->iem.s.fExec & IEM_F_X86_DISREGARD_LOCK)) \
        { \
            switch (pVCpu->iem.s.enmEffOpSize) \
            { \
                case IEMMODE_16BIT: \
                    IEM_MC_BEGIN(0, 0); \
                    IEM_MC_LOCAL(RTGCPTR, GCPtrEffDst); \
                    IEM_MC_CALC_RM_EFF_ADDR(GCPtrEffDst, bRm, 1); \
                    \
                    uint8_t u8Imm; IEM_OPCODE_GET_NEXT_U8(&u8Imm); \
                    IEMOP_HLP_DONE_DECODING(); \
                    \
                    IEM_MC_LOCAL(uint8_t,       bUnmapInfo); \
                    IEM_MC_ARG(uint16_t *,      pu16Dst,                                    1); \
                    IEM_MC_MEM_MAP_U16_RW(pu16Dst, bUnmapInfo, pVCpu->iem.s.iEffSeg, GCPtrEffDst); \
                    \
                    IEM_MC_ARG_EFLAGS(          fEFlagsIn,                                  0); \
                    IEM_MC_ARG_CONST(uint16_t,  u16Src,  (uint16_t)(int16_t)(int8_t)u8Imm,  2); \
                    IEM_MC_CALL_AIMPL_3(uint32_t, fEFlagsRet, RT_CONCAT3(iemAImpl_,a_InsNm,_u16), fEFlagsIn, pu16Dst, u16Src); \
                    \
                    IEM_MC_MEM_COMMIT_AND_UNMAP_RW(bUnmapInfo); \
                    IEM_MC_COMMIT_EFLAGS(fEFlagsRet); \
                    IEM_MC_ADVANCE_RIP_AND_FINISH(); \
                    IEM_MC_END(); \
                    break; \
                \
                case IEMMODE_32BIT: \
                    IEM_MC_BEGIN(IEM_MC_F_MIN_386, 0); \
                    IEM_MC_LOCAL(RTGCPTR, GCPtrEffDst); \
                    IEM_MC_CALC_RM_EFF_ADDR(GCPtrEffDst, bRm, 1); \
                    \
                    uint8_t u8Imm; IEM_OPCODE_GET_NEXT_U8(&u8Imm); \
                    IEMOP_HLP_DONE_DECODING(); \
                    \
                    IEM_MC_LOCAL(uint8_t,       bUnmapInfo); \
                    IEM_MC_ARG(uint32_t *,      pu32Dst,                                    1); \
                    IEM_MC_MEM_MAP_U32_RW(pu32Dst, bUnmapInfo, pVCpu->iem.s.iEffSeg, GCPtrEffDst); \
                    \
                    IEM_MC_ARG_EFLAGS(          fEFlagsIn,                                  0); \
                    IEM_MC_ARG_CONST(uint32_t,  u32Src,  (uint32_t)(int32_t)(int8_t)u8Imm,  2); \
                    IEM_MC_CALL_AIMPL_3(uint32_t, fEFlagsRet, RT_CONCAT3(iemAImpl_,a_InsNm,_u32), fEFlagsIn, pu32Dst, u32Src); \
                    \
                    IEM_MC_MEM_COMMIT_AND_UNMAP_RW(bUnmapInfo); \
                    IEM_MC_COMMIT_EFLAGS(fEFlagsRet); \
                    IEM_MC_ADVANCE_RIP_AND_FINISH(); \
                    IEM_MC_END(); \
                    break; \
                \
                case IEMMODE_64BIT: \
                    IEM_MC_BEGIN(IEM_MC_F_64BIT, 0); \
                    IEM_MC_LOCAL(RTGCPTR, GCPtrEffDst); \
                    IEM_MC_CALC_RM_EFF_ADDR(GCPtrEffDst, bRm, 1); \
                    \
                    uint8_t u8Imm; IEM_OPCODE_GET_NEXT_U8(&u8Imm); \
                    IEMOP_HLP_DONE_DECODING(); \
                    \
                    IEM_MC_LOCAL(uint8_t,       bUnmapInfo); \
                    IEM_MC_ARG(uint64_t *,      pu64Dst,                                    1); \
                    IEM_MC_MEM_MAP_U64_RW(pu64Dst, bUnmapInfo, pVCpu->iem.s.iEffSeg, GCPtrEffDst); \
                    \
                    IEM_MC_ARG_EFLAGS(          fEFlagsIn,                                  0); \
                    IEM_MC_ARG_CONST(uint64_t,  u64Src,  (uint64_t)(int64_t)(int8_t)u8Imm,  2); \
                    IEM_MC_CALL_AIMPL_3(uint32_t, fEFlagsRet, RT_CONCAT3(iemAImpl_,a_InsNm,_u64), fEFlagsIn, pu64Dst, u64Src); \
                    \
                    IEM_MC_MEM_COMMIT_AND_UNMAP_RW(bUnmapInfo); \
                    IEM_MC_COMMIT_EFLAGS(fEFlagsRet); \
                    IEM_MC_ADVANCE_RIP_AND_FINISH(); \
                    IEM_MC_END(); \
                    break; \
                \
                IEM_NOT_REACHED_DEFAULT_CASE_RET(); \
            } \
        } \
        else \
        { \
            switch (pVCpu->iem.s.enmEffOpSize) \
            { \
                case IEMMODE_16BIT: \
                    IEM_MC_BEGIN(0, 0); \
                    IEM_MC_LOCAL(RTGCPTR, GCPtrEffDst); \
                    IEM_MC_CALC_RM_EFF_ADDR(GCPtrEffDst, bRm, 1); \
                    \
                    uint8_t u8Imm; IEM_OPCODE_GET_NEXT_U8(&u8Imm); \
                    IEMOP_HLP_DONE_DECODING(); \
                    \
                    IEM_MC_LOCAL(uint8_t,       bUnmapInfo); \
                    IEM_MC_ARG(uint16_t *,      pu16Dst,                                    1); \
                    IEM_MC_MEM_MAP_U16_ATOMIC(pu16Dst, bUnmapInfo, pVCpu->iem.s.iEffSeg, GCPtrEffDst); \
                    \
                    IEM_MC_ARG_EFLAGS(          fEFlagsIn,                                  0); \
                    IEM_MC_ARG_CONST(uint16_t,  u16Src,  (uint16_t)(int16_t)(int8_t)u8Imm,  2); \
                    IEM_MC_CALL_AIMPL_3(uint32_t, fEFlagsRet, RT_CONCAT3(iemAImpl_,a_InsNm,_u16_locked), fEFlagsIn, pu16Dst, u16Src); \
                    \
                    IEM_MC_MEM_COMMIT_AND_UNMAP_ATOMIC(bUnmapInfo); \
                    IEM_MC_COMMIT_EFLAGS(fEFlagsRet); \
                    IEM_MC_ADVANCE_RIP_AND_FINISH(); \
                    IEM_MC_END(); \
                    break; \
                \
                case IEMMODE_32BIT: \
                    IEM_MC_BEGIN(IEM_MC_F_MIN_386, 0); \
                    IEM_MC_LOCAL(RTGCPTR, GCPtrEffDst); \
                    IEM_MC_CALC_RM_EFF_ADDR(GCPtrEffDst, bRm, 1); \
                    \
                    uint8_t u8Imm; IEM_OPCODE_GET_NEXT_U8(&u8Imm); \
                    IEMOP_HLP_DONE_DECODING(); \
                    \
                    IEM_MC_LOCAL(uint8_t,       bUnmapInfo); \
                    IEM_MC_ARG(uint32_t *,      pu32Dst,                                    1); \
                    IEM_MC_MEM_MAP_U32_ATOMIC(pu32Dst, bUnmapInfo, pVCpu->iem.s.iEffSeg, GCPtrEffDst); \
                    \
                    IEM_MC_ARG_EFLAGS(          fEFlagsIn,                                  0); \
                    IEM_MC_ARG_CONST(uint32_t,  u32Src,  (uint32_t)(int32_t)(int8_t)u8Imm,  2); \
                    IEM_MC_CALL_AIMPL_3(uint32_t, fEFlagsRet, RT_CONCAT3(iemAImpl_,a_InsNm,_u32_locked), fEFlagsIn, pu32Dst, u32Src); \
                    \
                    IEM_MC_MEM_COMMIT_AND_UNMAP_ATOMIC(bUnmapInfo); \
                    IEM_MC_COMMIT_EFLAGS(fEFlagsRet); \
                    IEM_MC_ADVANCE_RIP_AND_FINISH(); \
                    IEM_MC_END(); \
                    break; \
                \
                case IEMMODE_64BIT: \
                    IEM_MC_BEGIN(IEM_MC_F_64BIT, 0); \
                    IEM_MC_LOCAL(RTGCPTR, GCPtrEffDst); \
                    IEM_MC_CALC_RM_EFF_ADDR(GCPtrEffDst, bRm, 1); \
                    \
                    uint8_t u8Imm; IEM_OPCODE_GET_NEXT_U8(&u8Imm); \
                    IEMOP_HLP_DONE_DECODING(); \
                    \
                    IEM_MC_LOCAL(uint8_t,       bUnmapInfo); \
                    IEM_MC_ARG(uint64_t *,      pu64Dst,                                    1); \
                    IEM_MC_MEM_MAP_U64_ATOMIC(pu64Dst, bUnmapInfo, pVCpu->iem.s.iEffSeg, GCPtrEffDst); \
                    \
                    IEM_MC_ARG_EFLAGS(          fEFlagsIn,                                  0); \
                    IEM_MC_ARG_CONST(uint64_t,  u64Src, (uint64_t)(int64_t)(int8_t)u8Imm,   2); \
                    IEM_MC_CALL_AIMPL_3(uint32_t, fEFlagsRet, RT_CONCAT3(iemAImpl_,a_InsNm,_u64_locked), fEFlagsIn, pu64Dst, u64Src); \
                    \
                    IEM_MC_MEM_COMMIT_AND_UNMAP_ATOMIC(bUnmapInfo); \
                    IEM_MC_COMMIT_EFLAGS(fEFlagsRet); \
                    IEM_MC_ADVANCE_RIP_AND_FINISH(); \
                    IEM_MC_END(); \
                    break; \
                \
                IEM_NOT_REACHED_DEFAULT_CASE_RET(); \
            } \
        } \
    } \
    (void)0

/* read-only variant */
#define IEMOP_BODY_BINARY_Ev_Ib_RO(a_InsNm, a_fNativeArchs) \
    if (IEM_IS_MODRM_REG_MODE(bRm)) \
    { \
        /* \
         * Register target \
         */ \
        uint8_t u8Imm; IEM_OPCODE_GET_NEXT_U8(&u8Imm); /* Not sign extending it here saves threaded function param space. */ \
        switch (pVCpu->iem.s.enmEffOpSize) \
        { \
            case IEMMODE_16BIT: \
                IEM_MC_BEGIN(0, 0); \
                IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX(); \
                IEM_MC_NATIVE_IF(a_fNativeArchs) { \
                    IEM_MC_LOCAL(uint16_t,      u16Dst); \
                    IEM_MC_FETCH_GREG_U16(u16Dst, IEM_GET_MODRM_RM(pVCpu, bRm)); \
                    IEM_MC_LOCAL_EFLAGS(        uEFlags); \
                    IEM_MC_NATIVE_EMIT_5(RT_CONCAT3(iemNativeEmit_,a_InsNm,_r_i_efl), u16Dst, (uint16_t)(int16_t)(int8_t)u8Imm, uEFlags, 16, 8); \
                    IEM_MC_COMMIT_EFLAGS_OPT(uEFlags); \
                } IEM_MC_NATIVE_ELSE() { \
                    IEM_MC_ARG(uint16_t const *,pu16Dst,                                        1); \
                    IEM_MC_REF_GREG_U16_CONST(pu16Dst, IEM_GET_MODRM_RM(pVCpu, bRm)); \
                    IEM_MC_ARG_EFLAGS(          fEFlagsIn,                                      0); \
                    IEM_MC_ARG_CONST(uint16_t,  u16Src, /*=*/ (uint16_t)(int16_t)(int8_t)u8Imm, 2); \
                    IEM_MC_CALL_AIMPL_3(uint32_t, fEFlagsRet, RT_CONCAT3(iemAImpl_,a_InsNm,_u16), fEFlagsIn, pu16Dst, u16Src); \
                    IEM_MC_COMMIT_EFLAGS(fEFlagsRet); \
                } IEM_MC_NATIVE_ENDIF(); \
                IEM_MC_ADVANCE_RIP_AND_FINISH(); \
                IEM_MC_END(); \
                break; \
            \
            case IEMMODE_32BIT: \
                IEM_MC_BEGIN(IEM_MC_F_MIN_386, 0); \
                IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX(); \
                IEM_MC_NATIVE_IF(a_fNativeArchs) { \
                    IEM_MC_LOCAL(uint32_t,      u32Dst); \
                    IEM_MC_FETCH_GREG_U32(u32Dst, IEM_GET_MODRM_RM(pVCpu, bRm)); \
                    IEM_MC_LOCAL_EFLAGS(        uEFlags); \
                    IEM_MC_NATIVE_EMIT_5(RT_CONCAT3(iemNativeEmit_,a_InsNm,_r_i_efl), u32Dst, (uint32_t)(int32_t)(int8_t)u8Imm, uEFlags, 32, 8); \
                    IEM_MC_COMMIT_EFLAGS_OPT(uEFlags); \
                } IEM_MC_NATIVE_ELSE() { \
                    IEM_MC_ARG(uint32_t const *,pu32Dst,                                        1); \
                    IEM_MC_REF_GREG_U32_CONST(pu32Dst, IEM_GET_MODRM_RM(pVCpu, bRm)); \
                    IEM_MC_ARG_EFLAGS(          fEFlagsIn,                                      0); \
                    IEM_MC_ARG_CONST(uint32_t,  u32Src, /*=*/ (uint32_t)(int32_t)(int8_t)u8Imm, 2); \
                    IEM_MC_CALL_AIMPL_3(uint32_t, fEFlagsRet, RT_CONCAT3(iemAImpl_,a_InsNm,_u32), fEFlagsIn, pu32Dst, u32Src); \
                    IEM_MC_COMMIT_EFLAGS(fEFlagsRet); \
                } IEM_MC_NATIVE_ENDIF(); \
                IEM_MC_ADVANCE_RIP_AND_FINISH(); \
                IEM_MC_END(); \
                break; \
            \
            case IEMMODE_64BIT: \
                IEM_MC_BEGIN(IEM_MC_F_64BIT, 0); \
                IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX(); \
                IEM_MC_NATIVE_IF(a_fNativeArchs) { \
                    IEM_MC_LOCAL(uint64_t,      u64Dst); \
                    IEM_MC_FETCH_GREG_U64(u64Dst, IEM_GET_MODRM_RM(pVCpu, bRm)); \
                    IEM_MC_LOCAL_EFLAGS(        uEFlags); \
                    IEM_MC_NATIVE_EMIT_5(RT_CONCAT3(iemNativeEmit_,a_InsNm,_r_i_efl), u64Dst, (uint64_t)(int64_t)(int8_t)u8Imm, uEFlags, 64, 8); \
                    IEM_MC_COMMIT_EFLAGS_OPT(uEFlags); \
                } IEM_MC_NATIVE_ELSE() { \
                    IEM_MC_ARG(uint64_t const *,pu64Dst,                                        1); \
                    IEM_MC_REF_GREG_U64_CONST(pu64Dst, IEM_GET_MODRM_RM(pVCpu, bRm)); \
                    IEM_MC_ARG_EFLAGS(          fEFlagsIn,                                      0); \
                    IEM_MC_ARG_CONST(uint64_t,  u64Src, /*=*/ (uint64_t)(int64_t)(int8_t)u8Imm, 2); \
                    IEM_MC_CALL_AIMPL_3(uint32_t, fEFlagsRet, RT_CONCAT3(iemAImpl_,a_InsNm,_u64), fEFlagsIn, pu64Dst, u64Src); \
                    IEM_MC_COMMIT_EFLAGS(fEFlagsRet); \
                } IEM_MC_NATIVE_ENDIF(); \
                IEM_MC_ADVANCE_RIP_AND_FINISH(); \
                IEM_MC_END(); \
                break; \
            \
            IEM_NOT_REACHED_DEFAULT_CASE_RET(); \
        } \
    } \
    else \
    { \
        /* \
         * Memory target. \
         */ \
        if (!(pVCpu->iem.s.fPrefixes & IEM_OP_PRF_LOCK) || (pVCpu->iem.s.fExec & IEM_F_X86_DISREGARD_LOCK)) \
        { \
            switch (pVCpu->iem.s.enmEffOpSize) \
            { \
                case IEMMODE_16BIT: \
                    IEM_MC_BEGIN(0, 0); \
                    IEM_MC_LOCAL(RTGCPTR, GCPtrEffDst); \
                    IEM_MC_CALC_RM_EFF_ADDR(GCPtrEffDst, bRm, 1); \
                    uint8_t u8Imm; IEM_OPCODE_GET_NEXT_U8(&u8Imm); \
                    IEMOP_HLP_DONE_DECODING(); \
                    IEM_MC_NATIVE_IF(a_fNativeArchs) { \
                        IEM_MC_LOCAL(uint16_t,      u16Dst); \
                        IEM_MC_FETCH_MEM_U16(u16Dst, pVCpu->iem.s.iEffSeg, GCPtrEffDst); \
                        IEM_MC_LOCAL_EFLAGS(        uEFlags); \
                        IEM_MC_NATIVE_EMIT_5(RT_CONCAT3(iemNativeEmit_,a_InsNm,_r_i_efl), u16Dst, (uint16_t)(int16_t)(int8_t)u8Imm, uEFlags, 16, 8); \
                        IEM_MC_COMMIT_EFLAGS_OPT(uEFlags); \
                    } IEM_MC_NATIVE_ELSE() { \
                        IEM_MC_LOCAL(uint8_t,        bUnmapInfo); \
                        IEM_MC_ARG(uint16_t const *, pu16Dst,                                   1); \
                        IEM_MC_MEM_MAP_U16_RO(pu16Dst, bUnmapInfo, pVCpu->iem.s.iEffSeg, GCPtrEffDst); \
                        IEM_MC_ARG_EFLAGS(           fEFlagsIn,                                 0); \
                        IEM_MC_ARG_CONST(uint16_t,   u16Src, (uint16_t)(int16_t)(int8_t)u8Imm,  2); \
                        IEM_MC_CALL_AIMPL_3(uint32_t, fEFlagsRet, RT_CONCAT3(iemAImpl_,a_InsNm,_u16), fEFlagsIn, pu16Dst, u16Src); \
                        IEM_MC_MEM_COMMIT_AND_UNMAP_RO(bUnmapInfo); \
                        IEM_MC_COMMIT_EFLAGS(fEFlagsRet); \
                    } IEM_MC_NATIVE_ENDIF(); \
                    IEM_MC_ADVANCE_RIP_AND_FINISH(); \
                    IEM_MC_END(); \
                    break; \
                \
                case IEMMODE_32BIT: \
                    IEM_MC_BEGIN(IEM_MC_F_MIN_386, 0); \
                    IEM_MC_LOCAL(RTGCPTR, GCPtrEffDst); \
                    IEM_MC_CALC_RM_EFF_ADDR(GCPtrEffDst, bRm, 1); \
                    uint8_t u8Imm; IEM_OPCODE_GET_NEXT_U8(&u8Imm); \
                    IEMOP_HLP_DONE_DECODING(); \
                    IEM_MC_NATIVE_IF(a_fNativeArchs) { \
                        IEM_MC_LOCAL(uint32_t,      u32Dst); \
                        IEM_MC_FETCH_MEM_U32(u32Dst, pVCpu->iem.s.iEffSeg, GCPtrEffDst); \
                        IEM_MC_LOCAL_EFLAGS(        uEFlags); \
                        IEM_MC_NATIVE_EMIT_5(RT_CONCAT3(iemNativeEmit_,a_InsNm,_r_i_efl), u32Dst, (uint32_t)(int32_t)(int8_t)u8Imm, uEFlags, 32, 8); \
                        IEM_MC_COMMIT_EFLAGS_OPT(uEFlags); \
                    } IEM_MC_NATIVE_ELSE() { \
                        IEM_MC_LOCAL(uint8_t,        bUnmapInfo); \
                        IEM_MC_ARG(uint32_t const *, pu32Dst,                                   1); \
                        IEM_MC_MEM_MAP_U32_RO(pu32Dst, bUnmapInfo, pVCpu->iem.s.iEffSeg, GCPtrEffDst); \
                        IEM_MC_ARG_EFLAGS(           fEFlagsIn,                                 0); \
                        IEM_MC_ARG_CONST(uint32_t,   u32Src, (uint32_t)(int32_t)(int8_t)u8Imm,  2); \
                        IEM_MC_CALL_AIMPL_3(uint32_t, fEFlagsRet, RT_CONCAT3(iemAImpl_,a_InsNm,_u32), fEFlagsIn, pu32Dst, u32Src); \
                        IEM_MC_MEM_COMMIT_AND_UNMAP_RO(bUnmapInfo); \
                        IEM_MC_COMMIT_EFLAGS(fEFlagsRet); \
                    } IEM_MC_NATIVE_ENDIF(); \
                    IEM_MC_ADVANCE_RIP_AND_FINISH(); \
                    IEM_MC_END(); \
                    break; \
                \
                case IEMMODE_64BIT: \
                    IEM_MC_BEGIN(IEM_MC_F_64BIT, 0); \
                    IEM_MC_LOCAL(RTGCPTR, GCPtrEffDst); \
                    IEM_MC_CALC_RM_EFF_ADDR(GCPtrEffDst, bRm, 1); \
                    uint8_t u8Imm; IEM_OPCODE_GET_NEXT_U8(&u8Imm); \
                    IEMOP_HLP_DONE_DECODING(); \
                    IEM_MC_NATIVE_IF(a_fNativeArchs) { \
                        IEM_MC_LOCAL(uint64_t,      u64Dst); \
                        IEM_MC_FETCH_MEM_U64(u64Dst, pVCpu->iem.s.iEffSeg, GCPtrEffDst); \
                        IEM_MC_LOCAL_EFLAGS(        uEFlags); \
                        IEM_MC_NATIVE_EMIT_5(RT_CONCAT3(iemNativeEmit_,a_InsNm,_r_i_efl), u64Dst, (uint64_t)(int64_t)(int8_t)u8Imm, uEFlags, 64, 8); \
                        IEM_MC_COMMIT_EFLAGS_OPT(uEFlags); \
                    } IEM_MC_NATIVE_ELSE() { \
                        IEM_MC_LOCAL(uint8_t,        bUnmapInfo); \
                        IEM_MC_ARG(uint64_t const *, pu64Dst,                                   1); \
                        IEM_MC_MEM_MAP_U64_RO(pu64Dst, bUnmapInfo, pVCpu->iem.s.iEffSeg, GCPtrEffDst); \
                        IEM_MC_ARG_EFLAGS(           fEFlagsIn,                                 0); \
                        IEM_MC_ARG_CONST(uint64_t,  u64Src, (uint64_t)(int64_t)(int8_t)u8Imm,   2); \
                        IEM_MC_CALL_AIMPL_3(uint32_t, fEFlagsRet, RT_CONCAT3(iemAImpl_,a_InsNm,_u64), fEFlagsIn, pu64Dst, u64Src); \
                        IEM_MC_MEM_COMMIT_AND_UNMAP_RO(bUnmapInfo); \
                        IEM_MC_COMMIT_EFLAGS(fEFlagsRet); \
                    } IEM_MC_NATIVE_ENDIF(); \
                    IEM_MC_ADVANCE_RIP_AND_FINISH(); \
                    IEM_MC_END(); \
                    break; \
                \
                IEM_NOT_REACHED_DEFAULT_CASE_RET(); \
            } \
        } \
        else \
        { \
            IEMOP_HLP_DONE_DECODING(); \
            IEMOP_RAISE_INVALID_LOCK_PREFIX_RET(); \
        } \
    } \
    (void)0

/**
 * @opmaps      grp1_83
 * @opcode      /0
 * @opflclass   arithmetic
 */
FNIEMOP_DEF_1(iemOp_Grp1_add_Ev_Ib, uint8_t, bRm)
{
    IEMOP_MNEMONIC(add_Ev_Ib, "add Ev,Ib");
    IEMOP_BODY_BINARY_Ev_Ib_RW(add, RT_ARCH_VAL_AMD64 | RT_ARCH_VAL_ARM64, 0);
}


/**
 * @opmaps      grp1_83
 * @opcode      /1
 * @opflclass   logical
 */
FNIEMOP_DEF_1(iemOp_Grp1_or_Ev_Ib, uint8_t, bRm)
{
    IEMOP_MNEMONIC(or_Ev_Ib, "or Ev,Ib");
    IEMOP_BODY_BINARY_Ev_Ib_RW(or, RT_ARCH_VAL_AMD64 | RT_ARCH_VAL_ARM64, 0);
}


/**
 * @opmaps      grp1_83
 * @opcode      /2
 * @opflclass   arithmetic_carry
 */
FNIEMOP_DEF_1(iemOp_Grp1_adc_Ev_Ib, uint8_t, bRm)
{
    IEMOP_MNEMONIC(adc_Ev_Ib, "adc Ev,Ib");
    IEMOP_BODY_BINARY_Ev_Ib_RW(adc, RT_ARCH_VAL_AMD64 | RT_ARCH_VAL_ARM64, 0);
}


/**
 * @opmaps      grp1_83
 * @opcode      /3
 * @opflclass   arithmetic_carry
 */
FNIEMOP_DEF_1(iemOp_Grp1_sbb_Ev_Ib, uint8_t, bRm)
{
    IEMOP_MNEMONIC(sbb_Ev_Ib, "sbb Ev,Ib");
    IEMOP_BODY_BINARY_Ev_Ib_RW(sbb, RT_ARCH_VAL_AMD64 | RT_ARCH_VAL_ARM64, 0);
}


/**
 * @opmaps      grp1_83
 * @opcode      /4
 * @opflclass   logical
 */
FNIEMOP_DEF_1(iemOp_Grp1_and_Ev_Ib, uint8_t, bRm)
{
    IEMOP_MNEMONIC(and_Ev_Ib, "and Ev,Ib");
    IEMOP_BODY_BINARY_Ev_Ib_RW(and, RT_ARCH_VAL_AMD64 | RT_ARCH_VAL_ARM64, 0);
}


/**
 * @opmaps      grp1_83
 * @opcode      /5
 * @opflclass   arithmetic
 */
FNIEMOP_DEF_1(iemOp_Grp1_sub_Ev_Ib, uint8_t, bRm)
{
    IEMOP_MNEMONIC(sub_Ev_Ib, "sub Ev,Ib");
    IEMOP_BODY_BINARY_Ev_Ib_RW(sub, RT_ARCH_VAL_AMD64 | RT_ARCH_VAL_ARM64, 0);
}


/**
 * @opmaps      grp1_83
 * @opcode      /6
 * @opflclass   logical
 */
FNIEMOP_DEF_1(iemOp_Grp1_xor_Ev_Ib, uint8_t, bRm)
{
    IEMOP_MNEMONIC(xor_Ev_Ib, "xor Ev,Ib");
    IEMOP_BODY_BINARY_Ev_Ib_RW(xor, RT_ARCH_VAL_AMD64 | RT_ARCH_VAL_ARM64, 0);
}


/**
 * @opmaps      grp1_83
 * @opcode      /7
 * @opflclass   arithmetic
 */
FNIEMOP_DEF_1(iemOp_Grp1_cmp_Ev_Ib, uint8_t, bRm)
{
    IEMOP_MNEMONIC(cmp_Ev_Ib, "cmp Ev,Ib");
    IEMOP_BODY_BINARY_Ev_Ib_RO(cmp, RT_ARCH_VAL_AMD64 | RT_ARCH_VAL_ARM64);
}


/**
 * @opcode      0x83
 */
FNIEMOP_DEF(iemOp_Grp1_Ev_Ib)
{
    /* Note! Seems the OR, AND, and XOR instructions are present on CPUs prior
             to the 386 even if absent in the intel reference manuals and some
             3rd party opcode listings. */
    uint8_t bRm;   IEM_OPCODE_GET_NEXT_U8(&bRm);
    switch (IEM_GET_MODRM_REG_8(bRm))
    {
        case 0: return FNIEMOP_CALL_1(iemOp_Grp1_add_Ev_Ib, bRm);
        case 1: return FNIEMOP_CALL_1(iemOp_Grp1_or_Ev_Ib,  bRm);
        case 2: return FNIEMOP_CALL_1(iemOp_Grp1_adc_Ev_Ib, bRm);
        case 3: return FNIEMOP_CALL_1(iemOp_Grp1_sbb_Ev_Ib, bRm);
        case 4: return FNIEMOP_CALL_1(iemOp_Grp1_and_Ev_Ib, bRm);
        case 5: return FNIEMOP_CALL_1(iemOp_Grp1_sub_Ev_Ib, bRm);
        case 6: return FNIEMOP_CALL_1(iemOp_Grp1_xor_Ev_Ib, bRm);
        case 7: return FNIEMOP_CALL_1(iemOp_Grp1_cmp_Ev_Ib, bRm);
        IEM_NOT_REACHED_DEFAULT_CASE_RET();
    }
}


/**
 * @opcode      0x84
 * @opflclass   logical
 */
FNIEMOP_DEF(iemOp_test_Eb_Gb)
{
    IEMOP_MNEMONIC(test_Eb_Gb, "test Eb,Gb");
    IEMOP_VERIFICATION_UNDEFINED_EFLAGS(X86_EFL_AF);

    uint8_t bRm; IEM_OPCODE_GET_NEXT_U8(&bRm);

    /*
     * Deal with special case of 'test rN, rN' which is frequently used for testing for zero/non-zero registers.
     * This block only makes a differences when emitting native code, where we'll save a register fetch.
     */
    if (   (bRm >> X86_MODRM_REG_SHIFT) == ((bRm & X86_MODRM_RM_MASK) | (X86_MOD_REG << X86_MODRM_REG_SHIFT))
        && pVCpu->iem.s.uRexReg == pVCpu->iem.s.uRexB)
    {
        IEM_MC_BEGIN(0, 0);
        IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
        IEM_MC_ARG(uint8_t,         u8Src,      2);
        IEM_MC_FETCH_GREG_U8(u8Src, IEM_GET_MODRM_REG(pVCpu, bRm));
        IEM_MC_NATIVE_IF(RT_ARCH_VAL_AMD64 | RT_ARCH_VAL_ARM64) {
            IEM_MC_LOCAL_EFLAGS(uEFlags);
            IEM_MC_NATIVE_EMIT_4(iemNativeEmit_test_r_r_efl, u8Src, u8Src, uEFlags, 8);
            IEM_MC_COMMIT_EFLAGS_OPT(uEFlags);
        } IEM_MC_NATIVE_ELSE() {
            IEM_MC_ARG(uint8_t *,   pu8Dst,     1);
            IEM_MC_REF_GREG_U8(pu8Dst, IEM_GET_MODRM_REG(pVCpu, bRm)); /* == IEM_GET_MODRM_RM(pVCpu, bRm) */
            IEM_MC_ARG_EFLAGS(      fEFlagsIn,  0);
            IEM_MC_CALL_AIMPL_3(uint32_t, fEFlagsRet, iemAImpl_test_u8, fEFlagsIn, pu8Dst, u8Src);
            IEM_MC_COMMIT_EFLAGS(fEFlagsRet);
        } IEM_MC_NATIVE_ENDIF();
        IEM_MC_ADVANCE_RIP_AND_FINISH();
        IEM_MC_END();
    }

    IEMOP_BODY_BINARY_rm_r8_RO(bRm, iemAImpl_test_u8, test, RT_ARCH_VAL_AMD64 | RT_ARCH_VAL_ARM64);
}


/**
 * @opcode      0x85
 * @opflclass   logical
 */
FNIEMOP_DEF(iemOp_test_Ev_Gv)
{
    IEMOP_MNEMONIC(test_Ev_Gv, "test Ev,Gv");
    IEMOP_VERIFICATION_UNDEFINED_EFLAGS(X86_EFL_AF);

    uint8_t bRm; IEM_OPCODE_GET_NEXT_U8(&bRm);

    /*
     * Deal with special case of 'test rN, rN' which is frequently used for testing for zero/non-zero registers.
     * This block only makes a differences when emitting native code, where we'll save a register fetch.
     */
    if (   (bRm >> X86_MODRM_REG_SHIFT) == ((bRm & X86_MODRM_RM_MASK) | (X86_MOD_REG << X86_MODRM_REG_SHIFT))
        && pVCpu->iem.s.uRexReg == pVCpu->iem.s.uRexB)
    {
        switch (pVCpu->iem.s.enmEffOpSize)
        {
            case IEMMODE_16BIT:
                IEM_MC_BEGIN(0, 0);
                IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
                IEM_MC_ARG(uint16_t,        u16Src,     2);
                IEM_MC_FETCH_GREG_U16(u16Src, IEM_GET_MODRM_REG(pVCpu, bRm));
                IEM_MC_NATIVE_IF(RT_ARCH_VAL_AMD64 | RT_ARCH_VAL_ARM64) {
                    IEM_MC_LOCAL_EFLAGS(uEFlags);
                    IEM_MC_NATIVE_EMIT_4(iemNativeEmit_test_r_r_efl, u16Src, u16Src, uEFlags, 16);
                    IEM_MC_COMMIT_EFLAGS_OPT(uEFlags);
                } IEM_MC_NATIVE_ELSE() {
                    IEM_MC_ARG(uint16_t *,  pu16Dst,    1);
                    IEM_MC_REF_GREG_U16(pu16Dst, IEM_GET_MODRM_REG(pVCpu, bRm)); /* == IEM_GET_MODRM_RM(pVCpu, bRm) */
                    IEM_MC_ARG_EFLAGS(      fEFlagsIn,  0);
                    IEM_MC_CALL_AIMPL_3(uint32_t, fEFlagsRet, iemAImpl_test_u16, fEFlagsIn, pu16Dst, u16Src);
                    IEM_MC_COMMIT_EFLAGS(fEFlagsRet);
                } IEM_MC_NATIVE_ENDIF();
                IEM_MC_ADVANCE_RIP_AND_FINISH();
                IEM_MC_END();
                break;

            case IEMMODE_32BIT:
                IEM_MC_BEGIN(IEM_MC_F_MIN_386, 0);
                IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
                IEM_MC_ARG(uint32_t,        u32Src,     2);
                IEM_MC_FETCH_GREG_U32(u32Src, IEM_GET_MODRM_REG(pVCpu, bRm));
                IEM_MC_NATIVE_IF(RT_ARCH_VAL_AMD64 | RT_ARCH_VAL_ARM64) {
                    IEM_MC_LOCAL_EFLAGS(uEFlags);
                    IEM_MC_NATIVE_EMIT_4(iemNativeEmit_test_r_r_efl, u32Src, u32Src, uEFlags, 32);
                    IEM_MC_COMMIT_EFLAGS_OPT(uEFlags);
                } IEM_MC_NATIVE_ELSE() {
                    IEM_MC_ARG(uint32_t *,  pu32Dst,    1);
                    IEM_MC_REF_GREG_U32(pu32Dst, IEM_GET_MODRM_REG(pVCpu, bRm)); /* == IEM_GET_MODRM_RM(pVCpu, bRm) */
                    IEM_MC_ARG_EFLAGS(      fEFlagsIn,  0);
                    IEM_MC_CALL_AIMPL_3(uint32_t, fEFlagsRet, iemAImpl_test_u32, fEFlagsIn, pu32Dst, u32Src);
                    IEM_MC_COMMIT_EFLAGS(fEFlagsRet);
                } IEM_MC_NATIVE_ENDIF();
                IEM_MC_ADVANCE_RIP_AND_FINISH();
                IEM_MC_END();
                break;

            case IEMMODE_64BIT:
                IEM_MC_BEGIN(IEM_MC_F_64BIT, 0);
                IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
                IEM_MC_ARG(uint64_t,        u64Src,     2);
                IEM_MC_FETCH_GREG_U64(u64Src, IEM_GET_MODRM_REG(pVCpu, bRm));
                IEM_MC_NATIVE_IF(RT_ARCH_VAL_AMD64 | RT_ARCH_VAL_ARM64) {
                    IEM_MC_LOCAL_EFLAGS(uEFlags);
                    IEM_MC_NATIVE_EMIT_4(iemNativeEmit_test_r_r_efl, u64Src, u64Src, uEFlags, 64);
                    IEM_MC_COMMIT_EFLAGS_OPT(uEFlags);
                } IEM_MC_NATIVE_ELSE() {
                    IEM_MC_ARG(uint64_t *,  pu64Dst,    1);
                    IEM_MC_REF_GREG_U64(pu64Dst, IEM_GET_MODRM_REG(pVCpu, bRm)); /* == IEM_GET_MODRM_RM(pVCpu, bRm) */
                    IEM_MC_ARG_EFLAGS(      fEFlagsIn,  0);
                    IEM_MC_CALL_AIMPL_3(uint32_t, fEFlagsRet, iemAImpl_test_u64, fEFlagsIn, pu64Dst, u64Src);
                    IEM_MC_COMMIT_EFLAGS(fEFlagsRet);
                } IEM_MC_NATIVE_ENDIF();
                IEM_MC_ADVANCE_RIP_AND_FINISH();
                IEM_MC_END();
                break;

            IEM_NOT_REACHED_DEFAULT_CASE_RET();
        }
    }

    IEMOP_BODY_BINARY_rm_rv_RO(bRm, test, RT_ARCH_VAL_AMD64 | RT_ARCH_VAL_ARM64);
}


/**
 * @opcode      0x86
 */
FNIEMOP_DEF(iemOp_xchg_Eb_Gb)
{
    uint8_t bRm; IEM_OPCODE_GET_NEXT_U8(&bRm);
    IEMOP_MNEMONIC(xchg_Eb_Gb, "xchg Eb,Gb");

    /*
     * If rm is denoting a register, no more instruction bytes.
     */
    if (IEM_IS_MODRM_REG_MODE(bRm))
    {
        IEM_MC_BEGIN(0, 0);
        IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
        IEM_MC_LOCAL(uint8_t, uTmp1);
        IEM_MC_LOCAL(uint8_t, uTmp2);

        IEM_MC_FETCH_GREG_U8(uTmp1, IEM_GET_MODRM_REG(pVCpu, bRm));
        IEM_MC_FETCH_GREG_U8(uTmp2, IEM_GET_MODRM_RM(pVCpu, bRm));
        IEM_MC_STORE_GREG_U8(IEM_GET_MODRM_RM(pVCpu, bRm),                              uTmp1);
        IEM_MC_STORE_GREG_U8(IEM_GET_MODRM_REG(pVCpu, bRm), uTmp2);

        IEM_MC_ADVANCE_RIP_AND_FINISH();
        IEM_MC_END();
    }
    else
    {
        /*
         * We're accessing memory.
         */
#define IEMOP_XCHG_BYTE(a_fnWorker, a_Style) \
            IEM_MC_BEGIN(0, 0); \
            IEM_MC_LOCAL(RTGCPTR, GCPtrEffDst); \
            IEM_MC_LOCAL(uint8_t, bUnmapInfo); \
            IEM_MC_LOCAL(uint8_t, uTmpReg); \
            IEM_MC_ARG(uint8_t *,           pu8Mem,          0); \
            IEM_MC_ARG_LOCAL_REF(uint8_t *, pu8Reg, uTmpReg, 1); \
            \
            IEM_MC_CALC_RM_EFF_ADDR(GCPtrEffDst, bRm, 0); \
            IEMOP_HLP_DONE_DECODING(); /** @todo testcase: lock xchg */ \
            IEM_MC_MEM_MAP_U8_##a_Style(pu8Mem, bUnmapInfo, pVCpu->iem.s.iEffSeg, GCPtrEffDst); \
            IEM_MC_FETCH_GREG_U8(uTmpReg, IEM_GET_MODRM_REG(pVCpu, bRm)); \
            IEM_MC_CALL_VOID_AIMPL_2(a_fnWorker, pu8Mem, pu8Reg); \
            IEM_MC_MEM_COMMIT_AND_UNMAP_##a_Style(bUnmapInfo); \
            IEM_MC_STORE_GREG_U8(IEM_GET_MODRM_REG(pVCpu, bRm), uTmpReg); \
            \
            IEM_MC_ADVANCE_RIP_AND_FINISH(); \
            IEM_MC_END()

        if (!(pVCpu->iem.s.fExec & IEM_F_X86_DISREGARD_LOCK))
        {
            IEMOP_XCHG_BYTE(iemAImpl_xchg_u8_locked,ATOMIC);
        }
        else
        {
            IEMOP_XCHG_BYTE(iemAImpl_xchg_u8_unlocked,RW);
        }
    }
}


/**
 * @opcode      0x87
 */
FNIEMOP_DEF(iemOp_xchg_Ev_Gv)
{
    IEMOP_MNEMONIC(xchg_Ev_Gv, "xchg Ev,Gv");
    uint8_t bRm; IEM_OPCODE_GET_NEXT_U8(&bRm);

    /*
     * If rm is denoting a register, no more instruction bytes.
     */
    if (IEM_IS_MODRM_REG_MODE(bRm))
    {
        switch (pVCpu->iem.s.enmEffOpSize)
        {
            case IEMMODE_16BIT:
                IEM_MC_BEGIN(0, 0);
                IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
                IEM_MC_LOCAL(uint16_t, uTmp1);
                IEM_MC_LOCAL(uint16_t, uTmp2);

                IEM_MC_FETCH_GREG_U16(uTmp1, IEM_GET_MODRM_REG(pVCpu, bRm));
                IEM_MC_FETCH_GREG_U16(uTmp2, IEM_GET_MODRM_RM(pVCpu, bRm));
                IEM_MC_STORE_GREG_U16(IEM_GET_MODRM_RM(pVCpu, bRm),                              uTmp1);
                IEM_MC_STORE_GREG_U16(IEM_GET_MODRM_REG(pVCpu, bRm), uTmp2);

                IEM_MC_ADVANCE_RIP_AND_FINISH();
                IEM_MC_END();
                break;

            case IEMMODE_32BIT:
                IEM_MC_BEGIN(IEM_MC_F_MIN_386, 0);
                IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
                IEM_MC_LOCAL(uint32_t, uTmp1);
                IEM_MC_LOCAL(uint32_t, uTmp2);

                IEM_MC_FETCH_GREG_U32(uTmp1, IEM_GET_MODRM_REG(pVCpu, bRm));
                IEM_MC_FETCH_GREG_U32(uTmp2, IEM_GET_MODRM_RM(pVCpu, bRm));
                IEM_MC_STORE_GREG_U32(IEM_GET_MODRM_RM(pVCpu, bRm),                              uTmp1);
                IEM_MC_STORE_GREG_U32(IEM_GET_MODRM_REG(pVCpu, bRm), uTmp2);

                IEM_MC_ADVANCE_RIP_AND_FINISH();
                IEM_MC_END();
                break;

            case IEMMODE_64BIT:
                IEM_MC_BEGIN(IEM_MC_F_64BIT, 0);
                IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
                IEM_MC_LOCAL(uint64_t, uTmp1);
                IEM_MC_LOCAL(uint64_t, uTmp2);

                IEM_MC_FETCH_GREG_U64(uTmp1, IEM_GET_MODRM_REG(pVCpu, bRm));
                IEM_MC_FETCH_GREG_U64(uTmp2, IEM_GET_MODRM_RM(pVCpu, bRm));
                IEM_MC_STORE_GREG_U64(IEM_GET_MODRM_RM(pVCpu, bRm),                              uTmp1);
                IEM_MC_STORE_GREG_U64(IEM_GET_MODRM_REG(pVCpu, bRm), uTmp2);

                IEM_MC_ADVANCE_RIP_AND_FINISH();
                IEM_MC_END();
                break;

            IEM_NOT_REACHED_DEFAULT_CASE_RET();
        }
    }
    else
    {
        /*
         * We're accessing memory.
         */
#define IEMOP_XCHG_EV_GV(a_fnWorker16, a_fnWorker32, a_fnWorker64, a_Type) \
            do { \
                switch (pVCpu->iem.s.enmEffOpSize) \
                { \
                    case IEMMODE_16BIT: \
                        IEM_MC_BEGIN(0, 0); \
                        IEM_MC_LOCAL(RTGCPTR,  GCPtrEffDst); \
                        IEM_MC_LOCAL(uint8_t,  bUnmapInfo); \
                        IEM_MC_LOCAL(uint16_t, uTmpReg); \
                        IEM_MC_ARG(uint16_t *,           pu16Mem,          0); \
                        IEM_MC_ARG_LOCAL_REF(uint16_t *, pu16Reg, uTmpReg, 1); \
                        \
                        IEM_MC_CALC_RM_EFF_ADDR(GCPtrEffDst, bRm, 0); \
                        IEMOP_HLP_DONE_DECODING(); /** @todo testcase: lock xchg */ \
                        IEM_MC_MEM_MAP_U16_##a_Type(pu16Mem, bUnmapInfo, pVCpu->iem.s.iEffSeg, GCPtrEffDst); \
                        IEM_MC_FETCH_GREG_U16(uTmpReg, IEM_GET_MODRM_REG(pVCpu, bRm)); \
                        IEM_MC_CALL_VOID_AIMPL_2(a_fnWorker16, pu16Mem, pu16Reg); \
                        IEM_MC_MEM_COMMIT_AND_UNMAP_##a_Type(bUnmapInfo); \
                        IEM_MC_STORE_GREG_U16(IEM_GET_MODRM_REG(pVCpu, bRm), uTmpReg); \
                        \
                        IEM_MC_ADVANCE_RIP_AND_FINISH(); \
                        IEM_MC_END(); \
                        break; \
                    \
                    case IEMMODE_32BIT: \
                        IEM_MC_BEGIN(IEM_MC_F_MIN_386, 0); \
                        IEM_MC_LOCAL(RTGCPTR,  GCPtrEffDst); \
                        IEM_MC_LOCAL(uint8_t,  bUnmapInfo); \
                        IEM_MC_LOCAL(uint32_t, uTmpReg); \
                        IEM_MC_ARG(uint32_t *,           pu32Mem,          0); \
                        IEM_MC_ARG_LOCAL_REF(uint32_t *, pu32Reg, uTmpReg, 1); \
                        \
                        IEM_MC_CALC_RM_EFF_ADDR(GCPtrEffDst, bRm, 0); \
                        IEMOP_HLP_DONE_DECODING(); \
                        IEM_MC_MEM_MAP_U32_##a_Type(pu32Mem, bUnmapInfo, pVCpu->iem.s.iEffSeg, GCPtrEffDst); \
                        IEM_MC_FETCH_GREG_U32(uTmpReg, IEM_GET_MODRM_REG(pVCpu, bRm)); \
                        IEM_MC_CALL_VOID_AIMPL_2(a_fnWorker32, pu32Mem, pu32Reg); \
                        IEM_MC_MEM_COMMIT_AND_UNMAP_##a_Type(bUnmapInfo); \
                        IEM_MC_STORE_GREG_U32(IEM_GET_MODRM_REG(pVCpu, bRm), uTmpReg); \
                        \
                        IEM_MC_ADVANCE_RIP_AND_FINISH(); \
                        IEM_MC_END(); \
                        break; \
                    \
                    case IEMMODE_64BIT: \
                        IEM_MC_BEGIN(IEM_MC_F_64BIT, 0); \
                        IEM_MC_LOCAL(RTGCPTR,  GCPtrEffDst); \
                        IEM_MC_LOCAL(uint8_t,  bUnmapInfo); \
                        IEM_MC_LOCAL(uint64_t, uTmpReg); \
                        IEM_MC_ARG(uint64_t *,           pu64Mem,          0); \
                        IEM_MC_ARG_LOCAL_REF(uint64_t *, pu64Reg, uTmpReg, 1); \
                        \
                        IEM_MC_CALC_RM_EFF_ADDR(GCPtrEffDst, bRm, 0); \
                        IEMOP_HLP_DONE_DECODING(); \
                        IEM_MC_MEM_MAP_U64_##a_Type(pu64Mem, bUnmapInfo, pVCpu->iem.s.iEffSeg, GCPtrEffDst); \
                        IEM_MC_FETCH_GREG_U64(uTmpReg, IEM_GET_MODRM_REG(pVCpu, bRm)); \
                        IEM_MC_CALL_VOID_AIMPL_2(a_fnWorker64, pu64Mem, pu64Reg); \
                        IEM_MC_MEM_COMMIT_AND_UNMAP_##a_Type(bUnmapInfo); \
                        IEM_MC_STORE_GREG_U64(IEM_GET_MODRM_REG(pVCpu, bRm), uTmpReg); \
                        \
                        IEM_MC_ADVANCE_RIP_AND_FINISH(); \
                        IEM_MC_END(); \
                        break; \
                    \
                    IEM_NOT_REACHED_DEFAULT_CASE_RET(); \
                } \
            } while (0)
        if (!(pVCpu->iem.s.fExec & IEM_F_X86_DISREGARD_LOCK))
        {
            IEMOP_XCHG_EV_GV(iemAImpl_xchg_u16_locked, iemAImpl_xchg_u32_locked, iemAImpl_xchg_u64_locked,ATOMIC);
        }
        else
        {
            IEMOP_XCHG_EV_GV(iemAImpl_xchg_u16_unlocked, iemAImpl_xchg_u32_unlocked, iemAImpl_xchg_u64_unlocked,RW);
        }
    }
}


/**
 * @opcode      0x88
 */
FNIEMOP_DEF(iemOp_mov_Eb_Gb)
{
    IEMOP_MNEMONIC(mov_Eb_Gb, "mov Eb,Gb");

    uint8_t bRm;
    IEM_OPCODE_GET_NEXT_U8(&bRm);

    /*
     * If rm is denoting a register, no more instruction bytes.
     */
    if (IEM_IS_MODRM_REG_MODE(bRm))
    {
        IEM_MC_BEGIN(0, 0);
        IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
        IEM_MC_LOCAL(uint8_t, u8Value);
        IEM_MC_FETCH_GREG_U8(u8Value, IEM_GET_MODRM_REG(pVCpu, bRm));
        IEM_MC_STORE_GREG_U8(IEM_GET_MODRM_RM(pVCpu, bRm), u8Value);
        IEM_MC_ADVANCE_RIP_AND_FINISH();
        IEM_MC_END();
    }
    else
    {
        /*
         * We're writing a register to memory.
         */
        IEM_MC_BEGIN(0, 0);
        IEM_MC_LOCAL(uint8_t, u8Value);
        IEM_MC_LOCAL(RTGCPTR, GCPtrEffDst);
        IEM_MC_CALC_RM_EFF_ADDR(GCPtrEffDst, bRm, 0);
        IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
        IEM_MC_FETCH_GREG_U8(u8Value, IEM_GET_MODRM_REG(pVCpu, bRm));
        IEM_MC_STORE_MEM_U8(pVCpu->iem.s.iEffSeg, GCPtrEffDst, u8Value);
        IEM_MC_ADVANCE_RIP_AND_FINISH();
        IEM_MC_END();
    }
}


/**
 * @opcode      0x89
 */
FNIEMOP_DEF(iemOp_mov_Ev_Gv)
{
    IEMOP_MNEMONIC(mov_Ev_Gv, "mov Ev,Gv");

    uint8_t bRm; IEM_OPCODE_GET_NEXT_U8(&bRm);

    /*
     * If rm is denoting a register, no more instruction bytes.
     */
    if (IEM_IS_MODRM_REG_MODE(bRm))
    {
        switch (pVCpu->iem.s.enmEffOpSize)
        {
            case IEMMODE_16BIT:
                IEM_MC_BEGIN(0, 0);
                IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
                IEM_MC_LOCAL(uint16_t, u16Value);
                IEM_MC_FETCH_GREG_U16(u16Value, IEM_GET_MODRM_REG(pVCpu, bRm));
                IEM_MC_STORE_GREG_U16(IEM_GET_MODRM_RM(pVCpu, bRm), u16Value);
                IEM_MC_ADVANCE_RIP_AND_FINISH();
                IEM_MC_END();
                break;

            case IEMMODE_32BIT:
                IEM_MC_BEGIN(IEM_MC_F_MIN_386, 0);
                IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
                IEM_MC_LOCAL(uint32_t, u32Value);
                IEM_MC_FETCH_GREG_U32(u32Value, IEM_GET_MODRM_REG(pVCpu, bRm));
                IEM_MC_STORE_GREG_U32(IEM_GET_MODRM_RM(pVCpu, bRm), u32Value);
                IEM_MC_ADVANCE_RIP_AND_FINISH();
                IEM_MC_END();
                break;

            case IEMMODE_64BIT:
                IEM_MC_BEGIN(IEM_MC_F_64BIT, 0);
                IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
                IEM_MC_LOCAL(uint64_t, u64Value);
                IEM_MC_FETCH_GREG_U64(u64Value, IEM_GET_MODRM_REG(pVCpu, bRm));
                IEM_MC_STORE_GREG_U64(IEM_GET_MODRM_RM(pVCpu, bRm), u64Value);
                IEM_MC_ADVANCE_RIP_AND_FINISH();
                IEM_MC_END();
                break;

            IEM_NOT_REACHED_DEFAULT_CASE_RET();
        }
    }
    else
    {
        /*
         * We're writing a register to memory.
         */
        switch (pVCpu->iem.s.enmEffOpSize)
        {
            case IEMMODE_16BIT:
                IEM_MC_BEGIN(0, 0);
                IEM_MC_LOCAL(uint16_t, u16Value);
                IEM_MC_LOCAL(RTGCPTR, GCPtrEffDst);
                IEM_MC_CALC_RM_EFF_ADDR(GCPtrEffDst, bRm, 0);
                IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
                IEM_MC_FETCH_GREG_U16(u16Value, IEM_GET_MODRM_REG(pVCpu, bRm));
                IEM_MC_STORE_MEM_U16(pVCpu->iem.s.iEffSeg, GCPtrEffDst, u16Value);
                IEM_MC_ADVANCE_RIP_AND_FINISH();
                IEM_MC_END();
                break;

            case IEMMODE_32BIT:
                IEM_MC_BEGIN(IEM_MC_F_MIN_386, 0);
                IEM_MC_LOCAL(uint32_t, u32Value);
                IEM_MC_LOCAL(RTGCPTR, GCPtrEffDst);
                IEM_MC_CALC_RM_EFF_ADDR(GCPtrEffDst, bRm, 0);
                IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
                IEM_MC_FETCH_GREG_U32(u32Value, IEM_GET_MODRM_REG(pVCpu, bRm));
                IEM_MC_STORE_MEM_U32(pVCpu->iem.s.iEffSeg, GCPtrEffDst, u32Value);
                IEM_MC_ADVANCE_RIP_AND_FINISH();
                IEM_MC_END();
                break;

            case IEMMODE_64BIT:
                IEM_MC_BEGIN(IEM_MC_F_64BIT, 0);
                IEM_MC_LOCAL(uint64_t, u64Value);
                IEM_MC_LOCAL(RTGCPTR, GCPtrEffDst);
                IEM_MC_CALC_RM_EFF_ADDR(GCPtrEffDst, bRm, 0);
                IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
                IEM_MC_FETCH_GREG_U64(u64Value, IEM_GET_MODRM_REG(pVCpu, bRm));
                IEM_MC_STORE_MEM_U64(pVCpu->iem.s.iEffSeg, GCPtrEffDst, u64Value);
                IEM_MC_ADVANCE_RIP_AND_FINISH();
                IEM_MC_END();
                break;

            IEM_NOT_REACHED_DEFAULT_CASE_RET();
        }
    }
}


/**
 * @opcode      0x8a
 */
FNIEMOP_DEF(iemOp_mov_Gb_Eb)
{
    IEMOP_MNEMONIC(mov_Gb_Eb, "mov Gb,Eb");

    uint8_t bRm; IEM_OPCODE_GET_NEXT_U8(&bRm);

    /*
     * If rm is denoting a register, no more instruction bytes.
     */
    if (IEM_IS_MODRM_REG_MODE(bRm))
    {
        IEM_MC_BEGIN(0, 0);
        IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
        IEM_MC_LOCAL(uint8_t, u8Value);
        IEM_MC_FETCH_GREG_U8(u8Value, IEM_GET_MODRM_RM(pVCpu, bRm));
        IEM_MC_STORE_GREG_U8(IEM_GET_MODRM_REG(pVCpu, bRm), u8Value);
        IEM_MC_ADVANCE_RIP_AND_FINISH();
        IEM_MC_END();
    }
    else
    {
        /*
         * We're loading a register from memory.
         */
        IEM_MC_BEGIN(0, 0);
        IEM_MC_LOCAL(uint8_t, u8Value);
        IEM_MC_LOCAL(RTGCPTR, GCPtrEffDst);
        IEM_MC_CALC_RM_EFF_ADDR(GCPtrEffDst, bRm, 0);
        IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
        IEM_MC_FETCH_MEM_U8(u8Value, pVCpu->iem.s.iEffSeg, GCPtrEffDst);
        IEM_MC_STORE_GREG_U8(IEM_GET_MODRM_REG(pVCpu, bRm), u8Value);
        IEM_MC_ADVANCE_RIP_AND_FINISH();
        IEM_MC_END();
    }
}


/**
 * @opcode      0x8b
 */
FNIEMOP_DEF(iemOp_mov_Gv_Ev)
{
    IEMOP_MNEMONIC(mov_Gv_Ev, "mov Gv,Ev");

    uint8_t bRm; IEM_OPCODE_GET_NEXT_U8(&bRm);

    /*
     * If rm is denoting a register, no more instruction bytes.
     */
    if (IEM_IS_MODRM_REG_MODE(bRm))
    {
        switch (pVCpu->iem.s.enmEffOpSize)
        {
            case IEMMODE_16BIT:
                IEM_MC_BEGIN(0, 0);
                IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
                IEM_MC_LOCAL(uint16_t, u16Value);
                IEM_MC_FETCH_GREG_U16(u16Value, IEM_GET_MODRM_RM(pVCpu, bRm));
                IEM_MC_STORE_GREG_U16(IEM_GET_MODRM_REG(pVCpu, bRm), u16Value);
                IEM_MC_ADVANCE_RIP_AND_FINISH();
                IEM_MC_END();
                break;

            case IEMMODE_32BIT:
                IEM_MC_BEGIN(IEM_MC_F_MIN_386, 0);
                IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
                IEM_MC_LOCAL(uint32_t, u32Value);
                IEM_MC_FETCH_GREG_U32(u32Value, IEM_GET_MODRM_RM(pVCpu, bRm));
                IEM_MC_STORE_GREG_U32(IEM_GET_MODRM_REG(pVCpu, bRm), u32Value);
                IEM_MC_ADVANCE_RIP_AND_FINISH();
                IEM_MC_END();
                break;

            case IEMMODE_64BIT:
                IEM_MC_BEGIN(IEM_MC_F_64BIT, 0);
                IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
                IEM_MC_LOCAL(uint64_t, u64Value);
                IEM_MC_FETCH_GREG_U64(u64Value, IEM_GET_MODRM_RM(pVCpu, bRm));
                IEM_MC_STORE_GREG_U64(IEM_GET_MODRM_REG(pVCpu, bRm), u64Value);
                IEM_MC_ADVANCE_RIP_AND_FINISH();
                IEM_MC_END();
                break;

            IEM_NOT_REACHED_DEFAULT_CASE_RET();
        }
    }
    else
    {
        /*
         * We're loading a register from memory.
         */
        switch (pVCpu->iem.s.enmEffOpSize)
        {
            case IEMMODE_16BIT:
                IEM_MC_BEGIN(0, 0);
                IEM_MC_LOCAL(uint16_t, u16Value);
                IEM_MC_LOCAL(RTGCPTR, GCPtrEffDst);
                IEM_MC_CALC_RM_EFF_ADDR(GCPtrEffDst, bRm, 0);
                IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
                IEM_MC_FETCH_MEM_U16(u16Value, pVCpu->iem.s.iEffSeg, GCPtrEffDst);
                IEM_MC_STORE_GREG_U16(IEM_GET_MODRM_REG(pVCpu, bRm), u16Value);
                IEM_MC_ADVANCE_RIP_AND_FINISH();
                IEM_MC_END();
                break;

            case IEMMODE_32BIT:
                IEM_MC_BEGIN(IEM_MC_F_MIN_386, 0);
                IEM_MC_LOCAL(uint32_t, u32Value);
                IEM_MC_LOCAL(RTGCPTR, GCPtrEffDst);
                IEM_MC_CALC_RM_EFF_ADDR(GCPtrEffDst, bRm, 0);
                IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
                IEM_MC_FETCH_MEM_U32(u32Value, pVCpu->iem.s.iEffSeg, GCPtrEffDst);
                IEM_MC_STORE_GREG_U32(IEM_GET_MODRM_REG(pVCpu, bRm), u32Value);
                IEM_MC_ADVANCE_RIP_AND_FINISH();
                IEM_MC_END();
                break;

            case IEMMODE_64BIT:
                IEM_MC_BEGIN(IEM_MC_F_64BIT, 0);
                IEM_MC_LOCAL(uint64_t, u64Value);
                IEM_MC_LOCAL(RTGCPTR, GCPtrEffDst);
                IEM_MC_CALC_RM_EFF_ADDR(GCPtrEffDst, bRm, 0);
                IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
                IEM_MC_FETCH_MEM_U64(u64Value, pVCpu->iem.s.iEffSeg, GCPtrEffDst);
                IEM_MC_STORE_GREG_U64(IEM_GET_MODRM_REG(pVCpu, bRm), u64Value);
                IEM_MC_ADVANCE_RIP_AND_FINISH();
                IEM_MC_END();
                break;

            IEM_NOT_REACHED_DEFAULT_CASE_RET();
        }
    }
}


/**
 * opcode      0x63
 * @todo Table fixme
 */
FNIEMOP_DEF(iemOp_arpl_Ew_Gw_movsx_Gv_Ev)
{
    if (!IEM_IS_64BIT_CODE(pVCpu))
        return FNIEMOP_CALL(iemOp_arpl_Ew_Gw);
    if (pVCpu->iem.s.enmEffOpSize != IEMMODE_64BIT)
        return FNIEMOP_CALL(iemOp_mov_Gv_Ev);
    return FNIEMOP_CALL(iemOp_movsxd_Gv_Ev);
}


/**
 * @opcode      0x8c
 */
FNIEMOP_DEF(iemOp_mov_Ev_Sw)
{
    IEMOP_MNEMONIC(mov_Ev_Sw, "mov Ev,Sw");

    uint8_t bRm; IEM_OPCODE_GET_NEXT_U8(&bRm);

    /*
     * Check that the destination register exists. The REX.R prefix is ignored.
     */
    uint8_t const iSegReg = IEM_GET_MODRM_REG_8(bRm);
    if (iSegReg > X86_SREG_GS)
        IEMOP_RAISE_INVALID_OPCODE_RET(); /** @todo should probably not be raised until we've fetched all the opcode bytes? */

    /*
     * If rm is denoting a register, no more instruction bytes.
     * In that case, the operand size is respected and the upper bits are
     * cleared (starting with some pentium).
     */
    if (IEM_IS_MODRM_REG_MODE(bRm))
    {
        switch (pVCpu->iem.s.enmEffOpSize)
        {
            case IEMMODE_16BIT:
                IEM_MC_BEGIN(0, 0);
                IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
                IEM_MC_LOCAL(uint16_t, u16Value);
                IEM_MC_FETCH_SREG_U16(u16Value, iSegReg);
                IEM_MC_STORE_GREG_U16(IEM_GET_MODRM_RM(pVCpu, bRm), u16Value);
                IEM_MC_ADVANCE_RIP_AND_FINISH();
                IEM_MC_END();
                break;

            case IEMMODE_32BIT:
                IEM_MC_BEGIN(IEM_MC_F_MIN_386, 0);
                IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
                IEM_MC_LOCAL(uint32_t, u32Value);
                IEM_MC_FETCH_SREG_ZX_U32(u32Value, iSegReg);
                IEM_MC_STORE_GREG_U32(IEM_GET_MODRM_RM(pVCpu, bRm), u32Value);
                IEM_MC_ADVANCE_RIP_AND_FINISH();
                IEM_MC_END();
                break;

            case IEMMODE_64BIT:
                IEM_MC_BEGIN(IEM_MC_F_64BIT, 0);
                IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
                IEM_MC_LOCAL(uint64_t, u64Value);
                IEM_MC_FETCH_SREG_ZX_U64(u64Value, iSegReg);
                IEM_MC_STORE_GREG_U64(IEM_GET_MODRM_RM(pVCpu, bRm), u64Value);
                IEM_MC_ADVANCE_RIP_AND_FINISH();
                IEM_MC_END();
                break;

            IEM_NOT_REACHED_DEFAULT_CASE_RET();
        }
    }
    else
    {
        /*
         * We're saving the register to memory.  The access is word sized
         * regardless of operand size prefixes.
         */
#if 0 /* not necessary */
        pVCpu->iem.s.enmEffOpSize = pVCpu->iem.s.enmDefOpSize = IEMMODE_16BIT;
#endif
        IEM_MC_BEGIN(0, 0);
        IEM_MC_LOCAL(uint16_t,  u16Value);
        IEM_MC_LOCAL(RTGCPTR,   GCPtrEffDst);
        IEM_MC_CALC_RM_EFF_ADDR(GCPtrEffDst, bRm, 0);
        IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
        IEM_MC_FETCH_SREG_U16(u16Value, iSegReg);
        IEM_MC_STORE_MEM_U16(pVCpu->iem.s.iEffSeg, GCPtrEffDst, u16Value);
        IEM_MC_ADVANCE_RIP_AND_FINISH();
        IEM_MC_END();
    }
}




/**
 * @opcode      0x8d
 */
FNIEMOP_DEF(iemOp_lea_Gv_M)
{
    IEMOP_MNEMONIC(lea_Gv_M, "lea Gv,M");
    uint8_t bRm; IEM_OPCODE_GET_NEXT_U8(&bRm);
    if (IEM_IS_MODRM_REG_MODE(bRm))
        IEMOP_RAISE_INVALID_OPCODE_RET(); /* no register form */

    switch (pVCpu->iem.s.enmEffOpSize)
    {
        case IEMMODE_16BIT:
            IEM_MC_BEGIN(0, 0);
            IEM_MC_LOCAL(RTGCPTR,  GCPtrEffSrc);
            IEM_MC_CALC_RM_EFF_ADDR(GCPtrEffSrc, bRm, 0);
            IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
            /** @todo optimize: This value casting/masking can be skipped if addr-size ==
             *        operand-size, which is usually the case.  It'll save an instruction
             *        and a register. */
            IEM_MC_LOCAL(uint16_t, u16Cast);
            IEM_MC_ASSIGN_TO_SMALLER(u16Cast, GCPtrEffSrc);
            IEM_MC_STORE_GREG_U16(IEM_GET_MODRM_REG(pVCpu, bRm), u16Cast);
            IEM_MC_ADVANCE_RIP_AND_FINISH();
            IEM_MC_END();
            break;

        case IEMMODE_32BIT:
            IEM_MC_BEGIN(IEM_MC_F_MIN_386, 0);
            IEM_MC_LOCAL(RTGCPTR, GCPtrEffSrc);
            IEM_MC_CALC_RM_EFF_ADDR(GCPtrEffSrc, bRm, 0);
            IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
            /** @todo optimize: This value casting/masking can be skipped if addr-size ==
             *        operand-size, which is usually the case.  It'll save an instruction
             *        and a register. */
            IEM_MC_LOCAL(uint32_t, u32Cast);
            IEM_MC_ASSIGN_TO_SMALLER(u32Cast, GCPtrEffSrc);
            IEM_MC_STORE_GREG_U32(IEM_GET_MODRM_REG(pVCpu, bRm), u32Cast);
            IEM_MC_ADVANCE_RIP_AND_FINISH();
            IEM_MC_END();
            break;

        case IEMMODE_64BIT:
            IEM_MC_BEGIN(IEM_MC_F_64BIT, 0);
            IEM_MC_LOCAL(RTGCPTR, GCPtrEffSrc);
            IEM_MC_CALC_RM_EFF_ADDR(GCPtrEffSrc, bRm, 0);
            IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
            IEM_MC_STORE_GREG_U64(IEM_GET_MODRM_REG(pVCpu, bRm), GCPtrEffSrc);
            IEM_MC_ADVANCE_RIP_AND_FINISH();
            IEM_MC_END();
            break;

        IEM_NOT_REACHED_DEFAULT_CASE_RET();
    }
}


/**
 * @opcode      0x8e
 */
FNIEMOP_DEF(iemOp_mov_Sw_Ev)
{
    IEMOP_MNEMONIC(mov_Sw_Ev, "mov Sw,Ev");

    uint8_t bRm; IEM_OPCODE_GET_NEXT_U8(&bRm);

    /*
     * The practical operand size is 16-bit.
     */
#if 0 /* not necessary */
    pVCpu->iem.s.enmEffOpSize = pVCpu->iem.s.enmDefOpSize = IEMMODE_16BIT;
#endif

    /*
     * Check that the destination register exists and can be used with this
     * instruction.  The REX.R prefix is ignored.
     */
    uint8_t const iSegReg = IEM_GET_MODRM_REG_8(bRm);
    /** @todo r=bird: What does 8086 do here wrt CS? */
    if (   iSegReg == X86_SREG_CS
        || iSegReg > X86_SREG_GS)
        IEMOP_RAISE_INVALID_OPCODE_RET(); /** @todo should probably not be raised until we've fetched all the opcode bytes? */

    /*
     * If rm is denoting a register, no more instruction bytes.
     *
     * Note! Using IEMOP_MOV_SW_EV_REG_BODY here to specify different
     *       IEM_CIMPL_F_XXX values depending on the CPU mode and target
     *       register. This is a restriction of the current recompiler
     *       approach.
     */
    if (IEM_IS_MODRM_REG_MODE(bRm))
    {
#define IEMOP_MOV_SW_EV_REG_BODY(a_fCImplFlags) \
            IEM_MC_BEGIN(0, a_fCImplFlags); \
            IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX(); \
            IEM_MC_ARG_CONST(uint8_t, iSRegArg, iSegReg, 0); \
            IEM_MC_ARG(uint16_t,      u16Value,          1); \
            IEM_MC_FETCH_GREG_U16(u16Value, IEM_GET_MODRM_RM(pVCpu, bRm)); \
            IEM_MC_CALL_CIMPL_2(a_fCImplFlags, \
                                  RT_BIT_64(kIemNativeGstReg_SegSelFirst    + iSegReg) \
                                | RT_BIT_64(kIemNativeGstReg_SegBaseFirst   + iSegReg) \
                                | RT_BIT_64(kIemNativeGstReg_SegLimitFirst  + iSegReg) \
                                | RT_BIT_64(kIemNativeGstReg_SegAttribFirst + iSegReg), \
                                iemCImpl_load_SReg, iSRegArg, u16Value); \
            IEM_MC_END()

        if (iSegReg == X86_SREG_SS)
        {
            if (IEM_IS_32BIT_CODE(pVCpu))
            {
                IEMOP_MOV_SW_EV_REG_BODY(IEM_CIMPL_F_INHIBIT_SHADOW | IEM_CIMPL_F_MODE);
            }
            else
            {
                IEMOP_MOV_SW_EV_REG_BODY(IEM_CIMPL_F_INHIBIT_SHADOW);
            }
        }
        else if (iSegReg >= X86_SREG_FS || !IEM_IS_32BIT_CODE(pVCpu))
        {
            IEMOP_MOV_SW_EV_REG_BODY(0);
        }
        else
        {
            IEMOP_MOV_SW_EV_REG_BODY(IEM_CIMPL_F_MODE);
        }
#undef IEMOP_MOV_SW_EV_REG_BODY
    }
    else
    {
        /*
         * We're loading the register from memory.  The access is word sized
         * regardless of operand size prefixes.
         */
#define IEMOP_MOV_SW_EV_MEM_BODY(a_fCImplFlags) \
            IEM_MC_BEGIN(0, a_fCImplFlags); \
            IEM_MC_ARG_CONST(uint8_t, iSRegArg, iSegReg, 0); \
            IEM_MC_ARG(uint16_t,      u16Value,          1); \
            IEM_MC_LOCAL(RTGCPTR, GCPtrEffDst); \
            IEM_MC_CALC_RM_EFF_ADDR(GCPtrEffDst, bRm, 0); \
            IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX(); \
            IEM_MC_FETCH_MEM_U16(u16Value, pVCpu->iem.s.iEffSeg, GCPtrEffDst); \
            IEM_MC_CALL_CIMPL_2(a_fCImplFlags, \
                                  RT_BIT_64(kIemNativeGstReg_SegSelFirst    + iSegReg) \
                                | RT_BIT_64(kIemNativeGstReg_SegBaseFirst   + iSegReg) \
                                | RT_BIT_64(kIemNativeGstReg_SegLimitFirst  + iSegReg) \
                                | RT_BIT_64(kIemNativeGstReg_SegAttribFirst + iSegReg), \
                                iemCImpl_load_SReg, iSRegArg, u16Value); \
            IEM_MC_END()

        if (iSegReg == X86_SREG_SS)
        {
            if (IEM_IS_32BIT_CODE(pVCpu))
            {
                IEMOP_MOV_SW_EV_MEM_BODY(IEM_CIMPL_F_INHIBIT_SHADOW | IEM_CIMPL_F_MODE);
            }
            else
            {
                IEMOP_MOV_SW_EV_MEM_BODY(IEM_CIMPL_F_INHIBIT_SHADOW);
            }
        }
        else if (iSegReg >= X86_SREG_FS || !IEM_IS_32BIT_CODE(pVCpu))
        {
            IEMOP_MOV_SW_EV_MEM_BODY(0);
        }
        else
        {
            IEMOP_MOV_SW_EV_MEM_BODY(IEM_CIMPL_F_MODE);
        }
#undef IEMOP_MOV_SW_EV_MEM_BODY
    }
}


/** Opcode 0x8f /0. */
FNIEMOP_DEF_1(iemOp_pop_Ev, uint8_t, bRm)
{
    /* This bugger is rather annoying as it requires rSP to be updated before
       doing the effective address calculations.  Will eventually require a
       split between the R/M+SIB decoding and the effective address
       calculation - which is something that is required for any attempt at
       reusing this code for a recompiler.  It may also be good to have if we
       need to delay #UD exception caused by invalid lock prefixes.

       For now, we'll do a mostly safe interpreter-only implementation here. */
    /** @todo What's the deal with the 'reg' field and pop Ev?  Ignorning it for
     *        now until tests show it's checked.. */
    IEMOP_MNEMONIC(pop_Ev, "pop Ev");

    /* Register access is relatively easy and can share code. */
    if (IEM_IS_MODRM_REG_MODE(bRm))
        return FNIEMOP_CALL_1(iemOpCommonPopGReg, IEM_GET_MODRM_RM(pVCpu, bRm));

    /*
     * Memory target.
     *
     * Intel says that RSP is incremented before it's used in any effective
     * address calcuations.  This means some serious extra annoyance here since
     * we decode and calculate the effective address in one step and like to
     * delay committing registers till everything is done.
     *
     * So, we'll decode and calculate the effective address twice.  This will
     * require some recoding if turned into a recompiler.
     */
    IEMOP_HLP_DEFAULT_64BIT_OP_SIZE(); /* The common code does this differently. */

#if 1 /* This can be compiled, optimize later if needed. */
    switch (pVCpu->iem.s.enmEffOpSize)
    {
        case IEMMODE_16BIT:
            IEM_MC_BEGIN(0, 0);
            IEM_MC_ARG(RTGCPTR,         GCPtrEffDst,                        1);
            IEM_MC_CALC_RM_EFF_ADDR(GCPtrEffDst, bRm, 2 << 8);
            IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
            IEM_MC_ARG_CONST(uint8_t,   iEffSeg,    pVCpu->iem.s.iEffSeg,   0);
            IEM_MC_CALL_CIMPL_2(0, RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xSP), iemCImpl_pop_mem16, iEffSeg, GCPtrEffDst);
            IEM_MC_END();
            break;

        case IEMMODE_32BIT:
            IEM_MC_BEGIN(IEM_MC_F_MIN_386, 0);
            IEM_MC_ARG(RTGCPTR,         GCPtrEffDst,                        1);
            IEM_MC_CALC_RM_EFF_ADDR(GCPtrEffDst, bRm, 4 << 8);
            IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
            IEM_MC_ARG_CONST(uint8_t,   iEffSeg,    pVCpu->iem.s.iEffSeg,   0);
            IEM_MC_CALL_CIMPL_2(0, RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xSP), iemCImpl_pop_mem32, iEffSeg, GCPtrEffDst);
            IEM_MC_END();
            break;

        case IEMMODE_64BIT:
            IEM_MC_BEGIN(IEM_MC_F_64BIT, 0);
            IEM_MC_ARG(RTGCPTR,         GCPtrEffDst,                        1);
            IEM_MC_CALC_RM_EFF_ADDR(GCPtrEffDst, bRm, 8 << 8);
            IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
            IEM_MC_ARG_CONST(uint8_t,   iEffSeg,    pVCpu->iem.s.iEffSeg,   0);
            IEM_MC_CALL_CIMPL_2(0, RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xSP), iemCImpl_pop_mem64, iEffSeg, GCPtrEffDst);
            IEM_MC_END();
            break;

        IEM_NOT_REACHED_DEFAULT_CASE_RET();
    }

#else
# ifndef TST_IEM_CHECK_MC
    /* Calc effective address with modified ESP. */
/** @todo testcase */
    RTGCPTR         GCPtrEff;
    VBOXSTRICTRC    rcStrict;
    switch (pVCpu->iem.s.enmEffOpSize)
    {
        case IEMMODE_16BIT: rcStrict = iemOpHlpCalcRmEffAddr(pVCpu, bRm, 2 << 8, &GCPtrEff); break;
        case IEMMODE_32BIT: rcStrict = iemOpHlpCalcRmEffAddr(pVCpu, bRm, 4 << 8, &GCPtrEff); break;
        case IEMMODE_64BIT: rcStrict = iemOpHlpCalcRmEffAddr(pVCpu, bRm, 8 << 8, &GCPtrEff); break;
        IEM_NOT_REACHED_DEFAULT_CASE_RET();
    }
    if (rcStrict != VINF_SUCCESS)
        return rcStrict;
    IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();

    /* Perform the operation - this should be CImpl. */
    RTUINT64U TmpRsp;
    TmpRsp.u = pVCpu->cpum.GstCtx.rsp;
    switch (pVCpu->iem.s.enmEffOpSize)
    {
        case IEMMODE_16BIT:
        {
            uint16_t u16Value;
            rcStrict = iemMemStackPopU16Ex(pVCpu, &u16Value, &TmpRsp);
            if (rcStrict == VINF_SUCCESS)
                rcStrict = iemMemStoreDataU16(pVCpu, pVCpu->iem.s.iEffSeg, GCPtrEff, u16Value);
            break;
        }

        case IEMMODE_32BIT:
        {
            uint32_t u32Value;
            rcStrict = iemMemStackPopU32Ex(pVCpu, &u32Value, &TmpRsp);
            if (rcStrict == VINF_SUCCESS)
                rcStrict = iemMemStoreDataU32(pVCpu, pVCpu->iem.s.iEffSeg, GCPtrEff, u32Value);
            break;
        }

        case IEMMODE_64BIT:
        {
            uint64_t u64Value;
            rcStrict = iemMemStackPopU64Ex(pVCpu, &u64Value, &TmpRsp);
            if (rcStrict == VINF_SUCCESS)
                rcStrict = iemMemStoreDataU64(pVCpu, pVCpu->iem.s.iEffSeg, GCPtrEff, u64Value);
            break;
        }

        IEM_NOT_REACHED_DEFAULT_CASE_RET();
    }
    if (rcStrict == VINF_SUCCESS)
    {
        pVCpu->cpum.GstCtx.rsp = TmpRsp.u;
        return iemRegUpdateRipAndFinishClearingRF(pVCpu);
    }
    return rcStrict;

# else
    return VERR_IEM_IPE_2;
# endif
#endif
}


/**
 * @opcode      0x8f
 */
FNIEMOP_DEF(iemOp_Grp1A__xop)
{
    /*
     * AMD has defined /1 thru /7 as XOP prefix.  The prefix is similar to the
     * three byte VEX prefix, except that the mmmmm field cannot have the values
     * 0 thru 7, because it would then be confused with pop Ev (modrm.reg == 0).
     */
    uint8_t bRm; IEM_OPCODE_GET_NEXT_U8(&bRm);
    if ((bRm & X86_MODRM_REG_MASK) == (0 << X86_MODRM_REG_SHIFT)) /* /0 */
        return FNIEMOP_CALL_1(iemOp_pop_Ev, bRm);

    IEMOP_MNEMONIC(xop, "xop");
    if (IEM_GET_GUEST_CPU_FEATURES(pVCpu)->fXop)
    {
        /** @todo Test when exctly the XOP conformance checks kick in during
         * instruction decoding and fetching (using \#PF). */
        uint8_t bXop2;   IEM_OPCODE_GET_NEXT_U8(&bXop2);
        uint8_t bOpcode; IEM_OPCODE_GET_NEXT_U8(&bOpcode);
        if (   (  pVCpu->iem.s.fPrefixes
                & (IEM_OP_PRF_SIZE_OP | IEM_OP_PRF_REPZ | IEM_OP_PRF_REPNZ | IEM_OP_PRF_LOCK | IEM_OP_PRF_REX))
            == 0)
        {
            pVCpu->iem.s.fPrefixes |= IEM_OP_PRF_XOP;
            if ((bXop2 & 0x80 /* XOP.W */) && IEM_IS_64BIT_CODE(pVCpu))
                pVCpu->iem.s.fPrefixes |= IEM_OP_PRF_SIZE_REX_W;
            pVCpu->iem.s.uRexReg    = (~bRm >> (7 - 3)) & 0x8;
            pVCpu->iem.s.uRexIndex  = (~bRm >> (6 - 3)) & 0x8;
            pVCpu->iem.s.uRexB      = (~bRm >> (5 - 3)) & 0x8;
            pVCpu->iem.s.uVex3rdReg = (~bXop2 >> 3) & 0xf;
            pVCpu->iem.s.uVexLength = (bXop2 >> 2) & 1;
            pVCpu->iem.s.idxPrefix  = bXop2 & 0x3;

            /** @todo XOP: Just use new tables and decoders. */
            switch (bRm & 0x1f)
            {
                case 8: /* xop opcode map 8. */
                    IEMOP_BITCH_ABOUT_STUB();
                    return VERR_IEM_INSTR_NOT_IMPLEMENTED;

                case 9: /* xop opcode map 9. */
                    IEMOP_BITCH_ABOUT_STUB();
                    return VERR_IEM_INSTR_NOT_IMPLEMENTED;

                case 10: /* xop opcode map 10. */
                    IEMOP_BITCH_ABOUT_STUB();
                    return VERR_IEM_INSTR_NOT_IMPLEMENTED;

                default:
                    Log(("XOP: Invalid vvvv value: %#x!\n", bRm & 0x1f));
                    IEMOP_RAISE_INVALID_OPCODE_RET();
            }
        }
        else
            Log(("XOP: Invalid prefix mix!\n"));
    }
    else
        Log(("XOP: XOP support disabled!\n"));
    IEMOP_RAISE_INVALID_OPCODE_RET();
}


/**
 * Common 'xchg reg,rAX' helper.
 */
FNIEMOP_DEF_1(iemOpCommonXchgGRegRax, uint8_t, iReg)
{
    iReg |= pVCpu->iem.s.uRexB;
    switch (pVCpu->iem.s.enmEffOpSize)
    {
        case IEMMODE_16BIT:
            IEM_MC_BEGIN(0, 0);
            IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
            IEM_MC_LOCAL(uint16_t, u16Tmp1);
            IEM_MC_LOCAL(uint16_t, u16Tmp2);
            IEM_MC_FETCH_GREG_U16(u16Tmp1, iReg);
            IEM_MC_FETCH_GREG_U16(u16Tmp2, X86_GREG_xAX);
            IEM_MC_STORE_GREG_U16(X86_GREG_xAX, u16Tmp1);
            IEM_MC_STORE_GREG_U16(iReg,         u16Tmp2);
            IEM_MC_ADVANCE_RIP_AND_FINISH();
            IEM_MC_END();
            break;

        case IEMMODE_32BIT:
            IEM_MC_BEGIN(IEM_MC_F_MIN_386, 0);
            IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
            IEM_MC_LOCAL(uint32_t, u32Tmp1);
            IEM_MC_LOCAL(uint32_t, u32Tmp2);
            IEM_MC_FETCH_GREG_U32(u32Tmp1, iReg);
            IEM_MC_FETCH_GREG_U32(u32Tmp2, X86_GREG_xAX);
            IEM_MC_STORE_GREG_U32(X86_GREG_xAX, u32Tmp1);
            IEM_MC_STORE_GREG_U32(iReg,         u32Tmp2);
            IEM_MC_ADVANCE_RIP_AND_FINISH();
            IEM_MC_END();
            break;

        case IEMMODE_64BIT:
            IEM_MC_BEGIN(IEM_MC_F_64BIT, 0);
            IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
            IEM_MC_LOCAL(uint64_t, u64Tmp1);
            IEM_MC_LOCAL(uint64_t, u64Tmp2);
            IEM_MC_FETCH_GREG_U64(u64Tmp1, iReg);
            IEM_MC_FETCH_GREG_U64(u64Tmp2, X86_GREG_xAX);
            IEM_MC_STORE_GREG_U64(X86_GREG_xAX, u64Tmp1);
            IEM_MC_STORE_GREG_U64(iReg,         u64Tmp2);
            IEM_MC_ADVANCE_RIP_AND_FINISH();
            IEM_MC_END();
            break;

        IEM_NOT_REACHED_DEFAULT_CASE_RET();
    }
}


/**
 * @opcode      0x90
 */
FNIEMOP_DEF(iemOp_nop)
{
    /* R8/R8D and RAX/EAX can be exchanged. */
    if (pVCpu->iem.s.fPrefixes & IEM_OP_PRF_REX_B)
    {
        IEMOP_MNEMONIC(xchg_r8_rAX, "xchg r8,rAX");
        return FNIEMOP_CALL_1(iemOpCommonXchgGRegRax, X86_GREG_xAX);
    }

    if (pVCpu->iem.s.fPrefixes & IEM_OP_PRF_LOCK)
    {
        IEMOP_MNEMONIC(pause, "pause");
        /* ASSUMING that we keep the IEM_F_X86_CTX_IN_GUEST, IEM_F_X86_CTX_VMX
           and IEM_F_X86_CTX_SVM in the TB key, we can safely do the following: */
        if (!IEM_IS_IN_GUEST(pVCpu))
        { /* probable */ }
#ifdef VBOX_WITH_NESTED_HWVIRT_VMX
        else if (pVCpu->iem.s.fExec & IEM_F_X86_CTX_VMX)
            IEM_MC_DEFER_TO_CIMPL_0_RET(IEM_CIMPL_F_VMEXIT, 0, iemCImpl_vmx_pause);
#endif
#ifdef VBOX_WITH_NESTED_HWVIRT_SVM
        else if (pVCpu->iem.s.fExec & IEM_F_X86_CTX_SVM)
            IEM_MC_DEFER_TO_CIMPL_0_RET(IEM_CIMPL_F_VMEXIT, 0, iemCImpl_svm_pause);
#endif
    }
    else
        IEMOP_MNEMONIC(nop, "nop");
    /** @todo testcase: lock nop; lock pause */
    IEM_MC_BEGIN(0, 0);
    IEMOP_HLP_DONE_DECODING();
    IEM_MC_ADVANCE_RIP_AND_FINISH();
    IEM_MC_END();
}


/**
 * @opcode      0x91
 */
FNIEMOP_DEF(iemOp_xchg_eCX_eAX)
{
    IEMOP_MNEMONIC(xchg_rCX_rAX, "xchg rCX,rAX");
    return FNIEMOP_CALL_1(iemOpCommonXchgGRegRax, X86_GREG_xCX);
}


/**
 * @opcode      0x92
 */
FNIEMOP_DEF(iemOp_xchg_eDX_eAX)
{
    IEMOP_MNEMONIC(xchg_rDX_rAX, "xchg rDX,rAX");
    return FNIEMOP_CALL_1(iemOpCommonXchgGRegRax, X86_GREG_xDX);
}


/**
 * @opcode      0x93
 */
FNIEMOP_DEF(iemOp_xchg_eBX_eAX)
{
    IEMOP_MNEMONIC(xchg_rBX_rAX, "xchg rBX,rAX");
    return FNIEMOP_CALL_1(iemOpCommonXchgGRegRax, X86_GREG_xBX);
}


/**
 * @opcode      0x94
 */
FNIEMOP_DEF(iemOp_xchg_eSP_eAX)
{
    IEMOP_MNEMONIC(xchg_rSX_rAX, "xchg rSX,rAX");
    return FNIEMOP_CALL_1(iemOpCommonXchgGRegRax, X86_GREG_xSP);
}


/**
 * @opcode      0x95
 */
FNIEMOP_DEF(iemOp_xchg_eBP_eAX)
{
    IEMOP_MNEMONIC(xchg_rBP_rAX, "xchg rBP,rAX");
    return FNIEMOP_CALL_1(iemOpCommonXchgGRegRax, X86_GREG_xBP);
}


/**
 * @opcode      0x96
 */
FNIEMOP_DEF(iemOp_xchg_eSI_eAX)
{
    IEMOP_MNEMONIC(xchg_rSI_rAX, "xchg rSI,rAX");
    return FNIEMOP_CALL_1(iemOpCommonXchgGRegRax, X86_GREG_xSI);
}


/**
 * @opcode      0x97
 */
FNIEMOP_DEF(iemOp_xchg_eDI_eAX)
{
    IEMOP_MNEMONIC(xchg_rDI_rAX, "xchg rDI,rAX");
    return FNIEMOP_CALL_1(iemOpCommonXchgGRegRax, X86_GREG_xDI);
}


/**
 * @opcode      0x98
 */
FNIEMOP_DEF(iemOp_cbw)
{
    switch (pVCpu->iem.s.enmEffOpSize)
    {
        case IEMMODE_16BIT:
            IEMOP_MNEMONIC(cbw, "cbw");
            IEM_MC_BEGIN(0, 0);
            IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
            IEM_MC_IF_GREG_BIT_SET(X86_GREG_xAX, 7) {
                IEM_MC_OR_GREG_U16(X86_GREG_xAX, UINT16_C(0xff00));
            } IEM_MC_ELSE() {
                IEM_MC_AND_GREG_U16(X86_GREG_xAX, UINT16_C(0x00ff));
            } IEM_MC_ENDIF();
            IEM_MC_ADVANCE_RIP_AND_FINISH();
            IEM_MC_END();
            break;

        case IEMMODE_32BIT:
            IEMOP_MNEMONIC(cwde, "cwde");
            IEM_MC_BEGIN(IEM_MC_F_MIN_386, 0);
            IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
            IEM_MC_IF_GREG_BIT_SET(X86_GREG_xAX, 15) {
                IEM_MC_OR_GREG_U32(X86_GREG_xAX, UINT32_C(0xffff0000));
            } IEM_MC_ELSE() {
                IEM_MC_AND_GREG_U32(X86_GREG_xAX, UINT32_C(0x0000ffff));
            } IEM_MC_ENDIF();
            IEM_MC_ADVANCE_RIP_AND_FINISH();
            IEM_MC_END();
            break;

        case IEMMODE_64BIT:
            IEMOP_MNEMONIC(cdqe, "cdqe");
            IEM_MC_BEGIN(IEM_MC_F_64BIT, 0);
            IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
            IEM_MC_IF_GREG_BIT_SET(X86_GREG_xAX, 31) {
                IEM_MC_OR_GREG_U64(X86_GREG_xAX, UINT64_C(0xffffffff00000000));
            } IEM_MC_ELSE() {
                IEM_MC_AND_GREG_U64(X86_GREG_xAX, UINT64_C(0x00000000ffffffff));
            } IEM_MC_ENDIF();
            IEM_MC_ADVANCE_RIP_AND_FINISH();
            IEM_MC_END();
            break;

        IEM_NOT_REACHED_DEFAULT_CASE_RET();
    }
}


/**
 * @opcode      0x99
 */
FNIEMOP_DEF(iemOp_cwd)
{
    switch (pVCpu->iem.s.enmEffOpSize)
    {
        case IEMMODE_16BIT:
            IEMOP_MNEMONIC(cwd, "cwd");
            IEM_MC_BEGIN(0, 0);
            IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
            IEM_MC_IF_GREG_BIT_SET(X86_GREG_xAX, 15) {
                IEM_MC_STORE_GREG_U16_CONST(X86_GREG_xDX, UINT16_C(0xffff));
            } IEM_MC_ELSE() {
                IEM_MC_STORE_GREG_U16_CONST(X86_GREG_xDX, 0);
            } IEM_MC_ENDIF();
            IEM_MC_ADVANCE_RIP_AND_FINISH();
            IEM_MC_END();
            break;

        case IEMMODE_32BIT:
            IEMOP_MNEMONIC(cdq, "cdq");
            IEM_MC_BEGIN(IEM_MC_F_MIN_386, 0);
            IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
            IEM_MC_IF_GREG_BIT_SET(X86_GREG_xAX, 31) {
                IEM_MC_STORE_GREG_U32_CONST(X86_GREG_xDX, UINT32_C(0xffffffff));
            } IEM_MC_ELSE() {
                IEM_MC_STORE_GREG_U32_CONST(X86_GREG_xDX, 0);
            } IEM_MC_ENDIF();
            IEM_MC_ADVANCE_RIP_AND_FINISH();
            IEM_MC_END();
            break;

        case IEMMODE_64BIT:
            IEMOP_MNEMONIC(cqo, "cqo");
            IEM_MC_BEGIN(IEM_MC_F_64BIT, 0);
            IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
            IEM_MC_IF_GREG_BIT_SET(X86_GREG_xAX, 63) {
                IEM_MC_STORE_GREG_U64_CONST(X86_GREG_xDX, UINT64_C(0xffffffffffffffff));
            } IEM_MC_ELSE() {
                IEM_MC_STORE_GREG_U64_CONST(X86_GREG_xDX, 0);
            } IEM_MC_ENDIF();
            IEM_MC_ADVANCE_RIP_AND_FINISH();
            IEM_MC_END();
            break;

        IEM_NOT_REACHED_DEFAULT_CASE_RET();
    }
}


/**
 * @opcode      0x9a
 */
FNIEMOP_DEF(iemOp_call_Ap)
{
    IEMOP_MNEMONIC(call_Ap, "call Ap");
    IEMOP_HLP_NO_64BIT();

    /* Decode the far pointer address and pass it on to the far call C implementation. */
    uint32_t off32Seg;
    if (pVCpu->iem.s.enmEffOpSize != IEMMODE_16BIT)
        IEM_OPCODE_GET_NEXT_U32(&off32Seg);
    else
        IEM_OPCODE_GET_NEXT_U16_ZX_U32(&off32Seg);
    uint16_t u16Sel;  IEM_OPCODE_GET_NEXT_U16(&u16Sel);
    IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
    IEM_MC_DEFER_TO_CIMPL_3_RET(IEM_CIMPL_F_BRANCH_DIRECT | IEM_CIMPL_F_BRANCH_FAR | IEM_CIMPL_F_BRANCH_STACK
                                | IEM_CIMPL_F_MODE | IEM_CIMPL_F_RFLAGS | IEM_CIMPL_F_VMEXIT, UINT64_MAX,
                                iemCImpl_callf, u16Sel, off32Seg, pVCpu->iem.s.enmEffOpSize);
    /** @todo make task-switches, ring-switches, ++ return non-zero status */
}


/** Opcode 0x9b. (aka fwait) */
FNIEMOP_DEF(iemOp_wait)
{
    IEMOP_MNEMONIC(wait, "wait");
    IEM_MC_BEGIN(0, 0);
    IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
    IEM_MC_MAYBE_RAISE_WAIT_DEVICE_NOT_AVAILABLE();
    IEM_MC_MAYBE_RAISE_FPU_XCPT();
    IEM_MC_ADVANCE_RIP_AND_FINISH();
    IEM_MC_END();
}


/**
 * @opcode      0x9c
 */
FNIEMOP_DEF(iemOp_pushf_Fv)
{
    IEMOP_MNEMONIC(pushf_Fv, "pushf Fv");
    IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
    IEMOP_HLP_DEFAULT_64BIT_OP_SIZE();
    IEM_MC_DEFER_TO_CIMPL_1_RET(IEM_CIMPL_F_VMEXIT, RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xSP),
                                iemCImpl_pushf, pVCpu->iem.s.enmEffOpSize);
}


/**
 * @opcode      0x9d
 */
FNIEMOP_DEF(iemOp_popf_Fv)
{
    IEMOP_MNEMONIC(popf_Fv, "popf Fv");
    IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
    IEMOP_HLP_DEFAULT_64BIT_OP_SIZE();
    IEM_MC_DEFER_TO_CIMPL_1_RET(IEM_CIMPL_F_VMEXIT | IEM_CIMPL_F_RFLAGS | IEM_CIMPL_F_CHECK_IRQ_BEFORE_AND_AFTER,
                                RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xSP),
                                iemCImpl_popf, pVCpu->iem.s.enmEffOpSize);
}


/**
 * @opcode      0x9e
 * @opflmodify  cf,pf,af,zf,sf
 */
FNIEMOP_DEF(iemOp_sahf)
{
    IEMOP_MNEMONIC(sahf, "sahf");
    if (   IEM_IS_64BIT_CODE(pVCpu)
        && !IEM_GET_GUEST_CPU_FEATURES(pVCpu)->fLahfSahf)
        IEMOP_RAISE_INVALID_OPCODE_RET();
    IEM_MC_BEGIN(0, 0);
    IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
    IEM_MC_LOCAL(uint32_t, u32Flags);
    IEM_MC_LOCAL(uint32_t, EFlags);
    IEM_MC_FETCH_EFLAGS(EFlags);
    IEM_MC_FETCH_GREG_U8_ZX_U32(u32Flags, X86_GREG_xSP/*=AH*/);
    IEM_MC_AND_LOCAL_U32(u32Flags, X86_EFL_SF | X86_EFL_ZF | X86_EFL_AF | X86_EFL_PF | X86_EFL_CF);
    IEM_MC_AND_LOCAL_U32(EFlags, UINT32_C(0xffffff00));
    IEM_MC_OR_LOCAL_U32(u32Flags, X86_EFL_1);
    IEM_MC_OR_2LOCS_U32(EFlags, u32Flags);
    IEM_MC_COMMIT_EFLAGS(EFlags);
    IEM_MC_ADVANCE_RIP_AND_FINISH();
    IEM_MC_END();
}


/**
 * @opcode      0x9f
 * @opfltest    cf,pf,af,zf,sf
 */
FNIEMOP_DEF(iemOp_lahf)
{
    IEMOP_MNEMONIC(lahf, "lahf");
    if (   IEM_IS_64BIT_CODE(pVCpu)
        && !IEM_GET_GUEST_CPU_FEATURES(pVCpu)->fLahfSahf)
        IEMOP_RAISE_INVALID_OPCODE_RET();
    IEM_MC_BEGIN(0, 0);
    IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
    IEM_MC_LOCAL(uint8_t, u8Flags);
    IEM_MC_FETCH_EFLAGS_U8(u8Flags);
    IEM_MC_STORE_GREG_U8(X86_GREG_xSP/*=AH*/, u8Flags);
    IEM_MC_ADVANCE_RIP_AND_FINISH();
    IEM_MC_END();
}


/**
 * Macro used by iemOp_mov_AL_Ob, iemOp_mov_rAX_Ov, iemOp_mov_Ob_AL and
 * iemOp_mov_Ov_rAX to fetch the moffsXX bit of the opcode.
 * Will return/throw on failures.
 * @param   a_GCPtrMemOff   The variable to store the offset in.
 */
#define IEMOP_FETCH_MOFFS_XX(a_GCPtrMemOff) \
    do \
    { \
        switch (pVCpu->iem.s.enmEffAddrMode) \
        { \
            case IEMMODE_16BIT: \
                IEM_OPCODE_GET_NEXT_U16_ZX_U64(&(a_GCPtrMemOff)); \
                break; \
            case IEMMODE_32BIT: \
                IEM_OPCODE_GET_NEXT_U32_ZX_U64(&(a_GCPtrMemOff)); \
                break; \
            case IEMMODE_64BIT: \
                IEM_OPCODE_GET_NEXT_U64(&(a_GCPtrMemOff)); \
                break; \
            IEM_NOT_REACHED_DEFAULT_CASE_RET(); \
        } \
    } while (0)

/**
 * @opcode      0xa0
 */
FNIEMOP_DEF(iemOp_mov_AL_Ob)
{
    /*
     * Get the offset.
     */
    IEMOP_MNEMONIC(mov_AL_Ob, "mov AL,Ob");
    RTGCPTR GCPtrMemOffDecode;
    IEMOP_FETCH_MOFFS_XX(GCPtrMemOffDecode);

    /*
     * Fetch AL.
     */
    IEM_MC_BEGIN(0, 0);
    IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
    IEM_MC_LOCAL(uint8_t, u8Tmp);
    IEM_MC_LOCAL_CONST(RTGCPTR, GCPtrMemOff, GCPtrMemOffDecode);
    IEM_MC_FETCH_MEM_U8(u8Tmp, pVCpu->iem.s.iEffSeg, GCPtrMemOff);
    IEM_MC_STORE_GREG_U8(X86_GREG_xAX, u8Tmp);
    IEM_MC_ADVANCE_RIP_AND_FINISH();
    IEM_MC_END();
}


/**
 * @opcode      0xa1
 */
FNIEMOP_DEF(iemOp_mov_rAX_Ov)
{
    /*
     * Get the offset.
     */
    IEMOP_MNEMONIC(mov_rAX_Ov, "mov rAX,Ov");
    RTGCPTR GCPtrMemOffDecode;
    IEMOP_FETCH_MOFFS_XX(GCPtrMemOffDecode);

    /*
     * Fetch rAX.
     */
    switch (pVCpu->iem.s.enmEffOpSize)
    {
        case IEMMODE_16BIT:
            IEM_MC_BEGIN(0, 0);
            IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
            IEM_MC_LOCAL(uint16_t, u16Tmp);
            IEM_MC_LOCAL_CONST(RTGCPTR, GCPtrMemOff, GCPtrMemOffDecode);
            IEM_MC_FETCH_MEM_U16(u16Tmp, pVCpu->iem.s.iEffSeg, GCPtrMemOff);
            IEM_MC_STORE_GREG_U16(X86_GREG_xAX, u16Tmp);
            IEM_MC_ADVANCE_RIP_AND_FINISH();
            IEM_MC_END();
            break;

        case IEMMODE_32BIT:
            IEM_MC_BEGIN(IEM_MC_F_MIN_386, 0);
            IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
            IEM_MC_LOCAL(uint32_t, u32Tmp);
            IEM_MC_LOCAL_CONST(RTGCPTR, GCPtrMemOff, GCPtrMemOffDecode);
            IEM_MC_FETCH_MEM_U32(u32Tmp, pVCpu->iem.s.iEffSeg, GCPtrMemOff);
            IEM_MC_STORE_GREG_U32(X86_GREG_xAX, u32Tmp);
            IEM_MC_ADVANCE_RIP_AND_FINISH();
            IEM_MC_END();
            break;

        case IEMMODE_64BIT:
            IEM_MC_BEGIN(IEM_MC_F_64BIT, 0);
            IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
            IEM_MC_LOCAL(uint64_t, u64Tmp);
            IEM_MC_LOCAL_CONST(RTGCPTR, GCPtrMemOff, GCPtrMemOffDecode);
            IEM_MC_FETCH_MEM_U64(u64Tmp, pVCpu->iem.s.iEffSeg, GCPtrMemOff);
            IEM_MC_STORE_GREG_U64(X86_GREG_xAX, u64Tmp);
            IEM_MC_ADVANCE_RIP_AND_FINISH();
            IEM_MC_END();
            break;

        IEM_NOT_REACHED_DEFAULT_CASE_RET();
    }
}


/**
 * @opcode      0xa2
 */
FNIEMOP_DEF(iemOp_mov_Ob_AL)
{
    /*
     * Get the offset.
     */
    IEMOP_MNEMONIC(mov_Ob_AL, "mov Ob,AL");
    RTGCPTR GCPtrMemOffDecode;
    IEMOP_FETCH_MOFFS_XX(GCPtrMemOffDecode);

    /*
     * Store AL.
     */
    IEM_MC_BEGIN(0, 0);
    IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
    IEM_MC_LOCAL(uint8_t, u8Tmp);
    IEM_MC_FETCH_GREG_U8(u8Tmp, X86_GREG_xAX);
    IEM_MC_LOCAL_CONST(RTGCPTR, GCPtrMemOff, GCPtrMemOffDecode);
    IEM_MC_STORE_MEM_U8(pVCpu->iem.s.iEffSeg, GCPtrMemOff, u8Tmp);
    IEM_MC_ADVANCE_RIP_AND_FINISH();
    IEM_MC_END();
}


/**
 * @opcode      0xa3
 */
FNIEMOP_DEF(iemOp_mov_Ov_rAX)
{
    /*
     * Get the offset.
     */
    IEMOP_MNEMONIC(mov_Ov_rAX, "mov Ov,rAX");
    RTGCPTR GCPtrMemOffDecode;
    IEMOP_FETCH_MOFFS_XX(GCPtrMemOffDecode);

    /*
     * Store rAX.
     */
    switch (pVCpu->iem.s.enmEffOpSize)
    {
        case IEMMODE_16BIT:
            IEM_MC_BEGIN(0, 0);
            IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
            IEM_MC_LOCAL(uint16_t, u16Tmp);
            IEM_MC_FETCH_GREG_U16(u16Tmp, X86_GREG_xAX);
            IEM_MC_LOCAL_CONST(RTGCPTR, GCPtrMemOff, GCPtrMemOffDecode);
            IEM_MC_STORE_MEM_U16(pVCpu->iem.s.iEffSeg, GCPtrMemOff, u16Tmp);
            IEM_MC_ADVANCE_RIP_AND_FINISH();
            IEM_MC_END();
            break;

        case IEMMODE_32BIT:
            IEM_MC_BEGIN(IEM_MC_F_MIN_386, 0);
            IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
            IEM_MC_LOCAL(uint32_t, u32Tmp);
            IEM_MC_FETCH_GREG_U32(u32Tmp, X86_GREG_xAX);
            IEM_MC_LOCAL_CONST(RTGCPTR, GCPtrMemOff, GCPtrMemOffDecode);
            IEM_MC_STORE_MEM_U32(pVCpu->iem.s.iEffSeg, GCPtrMemOff, u32Tmp);
            IEM_MC_ADVANCE_RIP_AND_FINISH();
            IEM_MC_END();
            break;

        case IEMMODE_64BIT:
            IEM_MC_BEGIN(IEM_MC_F_64BIT, 0);
            IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
            IEM_MC_LOCAL(uint64_t, u64Tmp);
            IEM_MC_FETCH_GREG_U64(u64Tmp, X86_GREG_xAX);
            IEM_MC_LOCAL_CONST(RTGCPTR, GCPtrMemOff, GCPtrMemOffDecode);
            IEM_MC_STORE_MEM_U64(pVCpu->iem.s.iEffSeg, GCPtrMemOff, u64Tmp);
            IEM_MC_ADVANCE_RIP_AND_FINISH();
            IEM_MC_END();
            break;

        IEM_NOT_REACHED_DEFAULT_CASE_RET();
    }
}

/** Macro used by iemOp_movsb_Xb_Yb and iemOp_movswd_Xv_Yv */
#define IEM_MOVS_CASE(ValBits, AddrBits, a_fMcFlags) \
        IEM_MC_BEGIN(a_fMcFlags, 0); \
        IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX(); \
        IEM_MC_LOCAL(uint##ValBits##_t, uValue); \
        IEM_MC_LOCAL(RTGCPTR,           uAddr); \
        IEM_MC_FETCH_GREG_U##AddrBits##_ZX_U64(uAddr, X86_GREG_xSI); \
        IEM_MC_FETCH_MEM_U##ValBits(uValue, pVCpu->iem.s.iEffSeg, uAddr); \
        IEM_MC_FETCH_GREG_U##AddrBits##_ZX_U64(uAddr, X86_GREG_xDI); \
        IEM_MC_STORE_MEM_U##ValBits(X86_SREG_ES, uAddr, uValue); \
        IEM_MC_IF_EFL_BIT_SET(X86_EFL_DF) { \
            IEM_MC_SUB_GREG_U##AddrBits(X86_GREG_xDI, ValBits / 8); \
            IEM_MC_SUB_GREG_U##AddrBits(X86_GREG_xSI, ValBits / 8); \
        } IEM_MC_ELSE() { \
            IEM_MC_ADD_GREG_U##AddrBits(X86_GREG_xDI, ValBits / 8); \
            IEM_MC_ADD_GREG_U##AddrBits(X86_GREG_xSI, ValBits / 8); \
        } IEM_MC_ENDIF(); \
        IEM_MC_ADVANCE_RIP_AND_FINISH(); \
        IEM_MC_END() \

/**
 * @opcode      0xa4
 * @opfltest    df
 */
FNIEMOP_DEF(iemOp_movsb_Xb_Yb)
{
    /*
     * Use the C implementation if a repeat prefix is encountered.
     */
    if (pVCpu->iem.s.fPrefixes & (IEM_OP_PRF_REPNZ | IEM_OP_PRF_REPZ))
    {
        IEMOP_MNEMONIC(rep_movsb_Xb_Yb, "rep movsb Xb,Yb");
        IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
        switch (pVCpu->iem.s.enmEffAddrMode)
        {
            case IEMMODE_16BIT:
                IEM_MC_DEFER_TO_CIMPL_1_RET(IEM_CIMPL_F_REP,
                                              RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xSI)
                                            | RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xDI)
                                            | RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xCX),
                                            iemCImpl_rep_movs_op8_addr16, pVCpu->iem.s.iEffSeg);
            case IEMMODE_32BIT:
                IEM_MC_DEFER_TO_CIMPL_1_RET(IEM_CIMPL_F_REP,
                                              RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xSI)
                                            | RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xDI)
                                            | RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xCX),
                                            iemCImpl_rep_movs_op8_addr32, pVCpu->iem.s.iEffSeg);
            case IEMMODE_64BIT:
                IEM_MC_DEFER_TO_CIMPL_1_RET(IEM_CIMPL_F_REP,
                                              RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xSI)
                                            | RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xDI)
                                            | RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xCX),
                                            iemCImpl_rep_movs_op8_addr64, pVCpu->iem.s.iEffSeg);
            IEM_NOT_REACHED_DEFAULT_CASE_RET();
        }
    }

    /*
     * Sharing case implementation with movs[wdq] below.
     */
    IEMOP_MNEMONIC(movsb_Xb_Yb, "movsb Xb,Yb");
    switch (pVCpu->iem.s.enmEffAddrMode)
    {
        case IEMMODE_16BIT: IEM_MOVS_CASE(8, 16, IEM_MC_F_NOT_64BIT); break;
        case IEMMODE_32BIT: IEM_MOVS_CASE(8, 32, IEM_MC_F_MIN_386); break;
        case IEMMODE_64BIT: IEM_MOVS_CASE(8, 64, IEM_MC_F_64BIT); break;
        IEM_NOT_REACHED_DEFAULT_CASE_RET();
    }
}


/**
 * @opcode      0xa5
 * @opfltest    df
 */
FNIEMOP_DEF(iemOp_movswd_Xv_Yv)
{

    /*
     * Use the C implementation if a repeat prefix is encountered.
     */
    if (pVCpu->iem.s.fPrefixes & (IEM_OP_PRF_REPNZ | IEM_OP_PRF_REPZ))
    {
        IEMOP_MNEMONIC(rep_movs_Xv_Yv, "rep movs Xv,Yv");
        IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
        switch (pVCpu->iem.s.enmEffOpSize)
        {
            case IEMMODE_16BIT:
                switch (pVCpu->iem.s.enmEffAddrMode)
                {
                    case IEMMODE_16BIT:
                        IEM_MC_DEFER_TO_CIMPL_1_RET(IEM_CIMPL_F_REP,
                                                      RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xSI)
                                                    | RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xDI)
                                                    | RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xCX),
                                                    iemCImpl_rep_movs_op16_addr16, pVCpu->iem.s.iEffSeg);
                    case IEMMODE_32BIT:
                        IEM_MC_DEFER_TO_CIMPL_1_RET(IEM_CIMPL_F_REP,
                                                      RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xSI)
                                                    | RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xDI)
                                                    | RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xCX),
                                                    iemCImpl_rep_movs_op16_addr32, pVCpu->iem.s.iEffSeg);
                    case IEMMODE_64BIT:
                        IEM_MC_DEFER_TO_CIMPL_1_RET(IEM_CIMPL_F_REP,
                                                      RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xSI)
                                                    | RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xDI)
                                                    | RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xCX),
                                                    iemCImpl_rep_movs_op16_addr64, pVCpu->iem.s.iEffSeg);
                    IEM_NOT_REACHED_DEFAULT_CASE_RET();
                }
                break;
            case IEMMODE_32BIT:
                switch (pVCpu->iem.s.enmEffAddrMode)
                {
                    case IEMMODE_16BIT:
                        IEM_MC_DEFER_TO_CIMPL_1_RET(IEM_CIMPL_F_REP,
                                                      RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xSI)
                                                    | RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xDI)
                                                    | RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xCX),
                                                    iemCImpl_rep_movs_op32_addr16, pVCpu->iem.s.iEffSeg);
                    case IEMMODE_32BIT:
                        IEM_MC_DEFER_TO_CIMPL_1_RET(IEM_CIMPL_F_REP,
                                                      RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xSI)
                                                    | RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xDI)
                                                    | RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xCX),
                                                    iemCImpl_rep_movs_op32_addr32, pVCpu->iem.s.iEffSeg);
                    case IEMMODE_64BIT:
                        IEM_MC_DEFER_TO_CIMPL_1_RET(IEM_CIMPL_F_REP,
                                                      RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xSI)
                                                    | RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xDI)
                                                    | RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xCX),
                                                    iemCImpl_rep_movs_op32_addr64, pVCpu->iem.s.iEffSeg);
                    IEM_NOT_REACHED_DEFAULT_CASE_RET();
                }
            case IEMMODE_64BIT:
                switch (pVCpu->iem.s.enmEffAddrMode)
                {
                    case IEMMODE_16BIT: AssertFailedReturn(VERR_IEM_IPE_6);
                    case IEMMODE_32BIT:
                        IEM_MC_DEFER_TO_CIMPL_1_RET(IEM_CIMPL_F_REP,
                                                      RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xSI)
                                                    | RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xDI)
                                                    | RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xCX),
                                                    iemCImpl_rep_movs_op64_addr32, pVCpu->iem.s.iEffSeg);
                    case IEMMODE_64BIT:
                        IEM_MC_DEFER_TO_CIMPL_1_RET(IEM_CIMPL_F_REP,
                                                      RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xSI)
                                                    | RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xDI)
                                                    | RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xCX),
                                                    iemCImpl_rep_movs_op64_addr64, pVCpu->iem.s.iEffSeg);
                    IEM_NOT_REACHED_DEFAULT_CASE_RET();
                }
            IEM_NOT_REACHED_DEFAULT_CASE_RET();
        }
    }

    /*
     * Annoying double switch here.
     * Using ugly macro for implementing the cases, sharing it with movsb.
     */
    IEMOP_MNEMONIC(movs_Xv_Yv, "movs Xv,Yv");
    switch (pVCpu->iem.s.enmEffOpSize)
    {
        case IEMMODE_16BIT:
            switch (pVCpu->iem.s.enmEffAddrMode)
            {
                case IEMMODE_16BIT: IEM_MOVS_CASE(16, 16, IEM_MC_F_NOT_64BIT); break;
                case IEMMODE_32BIT: IEM_MOVS_CASE(16, 32, IEM_MC_F_MIN_386); break;
                case IEMMODE_64BIT: IEM_MOVS_CASE(16, 64, IEM_MC_F_64BIT); break;
                IEM_NOT_REACHED_DEFAULT_CASE_RET();
            }
            break;

        case IEMMODE_32BIT:
            switch (pVCpu->iem.s.enmEffAddrMode)
            {
                case IEMMODE_16BIT: IEM_MOVS_CASE(32, 16, IEM_MC_F_MIN_386 | IEM_MC_F_NOT_64BIT); break;
                case IEMMODE_32BIT: IEM_MOVS_CASE(32, 32, IEM_MC_F_MIN_386); break;
                case IEMMODE_64BIT: IEM_MOVS_CASE(32, 64, IEM_MC_F_64BIT); break;
                IEM_NOT_REACHED_DEFAULT_CASE_RET();
            }
            break;

        case IEMMODE_64BIT:
            switch (pVCpu->iem.s.enmEffAddrMode)
            {
                case IEMMODE_16BIT: AssertFailedReturn(VERR_IEM_IPE_1); /* cannot be encoded */ break;
                case IEMMODE_32BIT: IEM_MOVS_CASE(64, 32, IEM_MC_F_64BIT); break;
                case IEMMODE_64BIT: IEM_MOVS_CASE(64, 64, IEM_MC_F_64BIT); break;
                IEM_NOT_REACHED_DEFAULT_CASE_RET();
            }
            break;
        IEM_NOT_REACHED_DEFAULT_CASE_RET();
    }
}

#undef IEM_MOVS_CASE

/** Macro used by iemOp_cmpsb_Xb_Yb and iemOp_cmpswd_Xv_Yv */
#define IEM_CMPS_CASE(ValBits, AddrBits, a_fMcFlags) \
        IEM_MC_BEGIN(a_fMcFlags, 0); \
        IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX(); \
        \
        IEM_MC_LOCAL(RTGCPTR,           uAddr1); \
        IEM_MC_FETCH_GREG_U##AddrBits##_ZX_U64(uAddr1, X86_GREG_xSI); \
        IEM_MC_LOCAL(uint##ValBits##_t, uValue1); \
        IEM_MC_FETCH_MEM_U##ValBits(uValue1, pVCpu->iem.s.iEffSeg, uAddr1); \
        \
        IEM_MC_LOCAL(RTGCPTR,           uAddr2); \
        IEM_MC_FETCH_GREG_U##AddrBits##_ZX_U64(uAddr2, X86_GREG_xDI); \
        IEM_MC_ARG(uint##ValBits##_t,               uValue2,            2); \
        IEM_MC_FETCH_MEM_U##ValBits(uValue2, X86_SREG_ES, uAddr2); \
        \
        IEM_MC_ARG_LOCAL_REF(uint##ValBits##_t *,   puValue1, uValue1,  1); \
        IEM_MC_ARG_EFLAGS(                          fEFlagsIn,          0); \
        IEM_MC_CALL_AIMPL_3(uint32_t, fEFlagsRet, iemAImpl_cmp_u##ValBits, fEFlagsIn, puValue1, uValue2); \
        \
        IEM_MC_COMMIT_EFLAGS(fEFlagsRet); \
        IEM_MC_IF_EFL_BIT_SET(X86_EFL_DF) { \
            IEM_MC_SUB_GREG_U##AddrBits(X86_GREG_xDI, ValBits / 8); \
            IEM_MC_SUB_GREG_U##AddrBits(X86_GREG_xSI, ValBits / 8); \
        } IEM_MC_ELSE() { \
            IEM_MC_ADD_GREG_U##AddrBits(X86_GREG_xDI, ValBits / 8); \
            IEM_MC_ADD_GREG_U##AddrBits(X86_GREG_xSI, ValBits / 8); \
        } IEM_MC_ENDIF(); \
        IEM_MC_ADVANCE_RIP_AND_FINISH(); \
        IEM_MC_END() \

/**
 * @opcode      0xa6
 * @opflclass   arithmetic
 * @opfltest    df
 */
FNIEMOP_DEF(iemOp_cmpsb_Xb_Yb)
{

    /*
     * Use the C implementation if a repeat prefix is encountered.
     */
    if (pVCpu->iem.s.fPrefixes & IEM_OP_PRF_REPZ)
    {
        IEMOP_MNEMONIC(repz_cmps_Xb_Yb, "repz cmps Xb,Yb");
        IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
        switch (pVCpu->iem.s.enmEffAddrMode)
        {
            case IEMMODE_16BIT:
                IEM_MC_DEFER_TO_CIMPL_1_RET(IEM_CIMPL_F_REP | IEM_CIMPL_F_STATUS_FLAGS,
                                              RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xSI)
                                            | RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xDI)
                                            | RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xCX),
                                            iemCImpl_repe_cmps_op8_addr16, pVCpu->iem.s.iEffSeg);
            case IEMMODE_32BIT:
                IEM_MC_DEFER_TO_CIMPL_1_RET(IEM_CIMPL_F_REP | IEM_CIMPL_F_STATUS_FLAGS,
                                              RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xSI)
                                            | RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xDI)
                                            | RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xCX),
                                            iemCImpl_repe_cmps_op8_addr32, pVCpu->iem.s.iEffSeg);
            case IEMMODE_64BIT:
                IEM_MC_DEFER_TO_CIMPL_1_RET(IEM_CIMPL_F_REP | IEM_CIMPL_F_STATUS_FLAGS,
                                              RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xSI)
                                            | RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xDI)
                                            | RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xCX),
                                            iemCImpl_repe_cmps_op8_addr64, pVCpu->iem.s.iEffSeg);
            IEM_NOT_REACHED_DEFAULT_CASE_RET();
        }
    }
    if (pVCpu->iem.s.fPrefixes & IEM_OP_PRF_REPNZ)
    {
        IEMOP_MNEMONIC(repnz_cmps_Xb_Yb, "repnz cmps Xb,Yb");
        IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
        switch (pVCpu->iem.s.enmEffAddrMode)
        {
            case IEMMODE_16BIT:
                IEM_MC_DEFER_TO_CIMPL_1_RET(IEM_CIMPL_F_REP | IEM_CIMPL_F_STATUS_FLAGS,
                                              RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xSI)
                                            | RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xDI)
                                            | RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xCX),
                                            iemCImpl_repne_cmps_op8_addr16, pVCpu->iem.s.iEffSeg);
            case IEMMODE_32BIT:
                IEM_MC_DEFER_TO_CIMPL_1_RET(IEM_CIMPL_F_REP | IEM_CIMPL_F_STATUS_FLAGS,
                                              RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xSI)
                                            | RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xDI)
                                            | RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xCX),
                                            iemCImpl_repne_cmps_op8_addr32, pVCpu->iem.s.iEffSeg);
            case IEMMODE_64BIT:
                IEM_MC_DEFER_TO_CIMPL_1_RET(IEM_CIMPL_F_REP | IEM_CIMPL_F_STATUS_FLAGS,
                                              RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xSI)
                                            | RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xDI)
                                            | RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xCX),
                                            iemCImpl_repne_cmps_op8_addr64, pVCpu->iem.s.iEffSeg);
            IEM_NOT_REACHED_DEFAULT_CASE_RET();
        }
    }

    /*
     * Sharing case implementation with cmps[wdq] below.
     */
    IEMOP_MNEMONIC(cmps_Xb_Yb, "cmps Xb,Yb");
    switch (pVCpu->iem.s.enmEffAddrMode)
    {
        case IEMMODE_16BIT: IEM_CMPS_CASE(8, 16, IEM_MC_F_NOT_64BIT); break;
        case IEMMODE_32BIT: IEM_CMPS_CASE(8, 32, IEM_MC_F_MIN_386); break;
        case IEMMODE_64BIT: IEM_CMPS_CASE(8, 64, IEM_MC_F_64BIT); break;
        IEM_NOT_REACHED_DEFAULT_CASE_RET();
    }
}


/**
 * @opcode      0xa7
 * @opflclass   arithmetic
 * @opfltest    df
 */
FNIEMOP_DEF(iemOp_cmpswd_Xv_Yv)
{
    /*
     * Use the C implementation if a repeat prefix is encountered.
     */
    if (pVCpu->iem.s.fPrefixes & IEM_OP_PRF_REPZ)
    {
        IEMOP_MNEMONIC(repe_cmps_Xv_Yv, "repe cmps Xv,Yv");
        IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
        switch (pVCpu->iem.s.enmEffOpSize)
        {
            case IEMMODE_16BIT:
                switch (pVCpu->iem.s.enmEffAddrMode)
                {
                    case IEMMODE_16BIT:
                        IEM_MC_DEFER_TO_CIMPL_1_RET(IEM_CIMPL_F_REP | IEM_CIMPL_F_STATUS_FLAGS,
                                                      RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xSI)
                                                    | RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xDI)
                                                    | RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xCX),
                                                    iemCImpl_repe_cmps_op16_addr16, pVCpu->iem.s.iEffSeg);
                    case IEMMODE_32BIT:
                        IEM_MC_DEFER_TO_CIMPL_1_RET(IEM_CIMPL_F_REP | IEM_CIMPL_F_STATUS_FLAGS,
                                                      RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xSI)
                                                    | RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xDI)
                                                    | RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xCX),
                                                    iemCImpl_repe_cmps_op16_addr32, pVCpu->iem.s.iEffSeg);
                    case IEMMODE_64BIT:
                        IEM_MC_DEFER_TO_CIMPL_1_RET(IEM_CIMPL_F_REP | IEM_CIMPL_F_STATUS_FLAGS,
                                                      RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xSI)
                                                    | RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xDI)
                                                    | RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xCX),
                                                    iemCImpl_repe_cmps_op16_addr64, pVCpu->iem.s.iEffSeg);
                    IEM_NOT_REACHED_DEFAULT_CASE_RET();
                }
                break;
            case IEMMODE_32BIT:
                switch (pVCpu->iem.s.enmEffAddrMode)
                {
                    case IEMMODE_16BIT:
                        IEM_MC_DEFER_TO_CIMPL_1_RET(IEM_CIMPL_F_REP | IEM_CIMPL_F_STATUS_FLAGS,
                                                      RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xSI)
                                                    | RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xDI)
                                                    | RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xCX),
                                                    iemCImpl_repe_cmps_op32_addr16, pVCpu->iem.s.iEffSeg);
                    case IEMMODE_32BIT:
                        IEM_MC_DEFER_TO_CIMPL_1_RET(IEM_CIMPL_F_REP | IEM_CIMPL_F_STATUS_FLAGS,
                                                      RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xSI)
                                                    | RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xDI)
                                                    | RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xCX),
                                                    iemCImpl_repe_cmps_op32_addr32, pVCpu->iem.s.iEffSeg);
                    case IEMMODE_64BIT:
                        IEM_MC_DEFER_TO_CIMPL_1_RET(IEM_CIMPL_F_REP | IEM_CIMPL_F_STATUS_FLAGS,
                                                      RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xSI)
                                                    | RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xDI)
                                                    | RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xCX),
                                                    iemCImpl_repe_cmps_op32_addr64, pVCpu->iem.s.iEffSeg);
                    IEM_NOT_REACHED_DEFAULT_CASE_RET();
                }
            case IEMMODE_64BIT:
                switch (pVCpu->iem.s.enmEffAddrMode)
                {
                    case IEMMODE_16BIT: AssertFailedReturn(VERR_IEM_IPE_4);
                    case IEMMODE_32BIT:
                        IEM_MC_DEFER_TO_CIMPL_1_RET(IEM_CIMPL_F_REP | IEM_CIMPL_F_STATUS_FLAGS,
                                                      RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xSI)
                                                    | RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xDI)
                                                    | RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xCX),
                                                    iemCImpl_repe_cmps_op64_addr32, pVCpu->iem.s.iEffSeg);
                    case IEMMODE_64BIT:
                        IEM_MC_DEFER_TO_CIMPL_1_RET(IEM_CIMPL_F_REP | IEM_CIMPL_F_STATUS_FLAGS,
                                                      RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xSI)
                                                    | RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xDI)
                                                    | RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xCX),
                                                    iemCImpl_repe_cmps_op64_addr64, pVCpu->iem.s.iEffSeg);
                    IEM_NOT_REACHED_DEFAULT_CASE_RET();
                }
            IEM_NOT_REACHED_DEFAULT_CASE_RET();
        }
    }

    if (pVCpu->iem.s.fPrefixes & IEM_OP_PRF_REPNZ)
    {
        IEMOP_MNEMONIC(repne_cmps_Xv_Yv, "repne cmps Xv,Yv");
        IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
        switch (pVCpu->iem.s.enmEffOpSize)
        {
            case IEMMODE_16BIT:
                switch (pVCpu->iem.s.enmEffAddrMode)
                {
                    case IEMMODE_16BIT:
                        IEM_MC_DEFER_TO_CIMPL_1_RET(IEM_CIMPL_F_REP | IEM_CIMPL_F_STATUS_FLAGS,
                                                      RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xSI)
                                                    | RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xDI)
                                                    | RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xCX),
                                                    iemCImpl_repne_cmps_op16_addr16, pVCpu->iem.s.iEffSeg);
                    case IEMMODE_32BIT:
                        IEM_MC_DEFER_TO_CIMPL_1_RET(IEM_CIMPL_F_REP | IEM_CIMPL_F_STATUS_FLAGS,
                                                      RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xSI)
                                                    | RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xDI)
                                                    | RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xCX),
                                                    iemCImpl_repne_cmps_op16_addr32, pVCpu->iem.s.iEffSeg);
                    case IEMMODE_64BIT:
                        IEM_MC_DEFER_TO_CIMPL_1_RET(IEM_CIMPL_F_REP | IEM_CIMPL_F_STATUS_FLAGS,
                                                      RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xSI)
                                                    | RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xDI)
                                                    | RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xCX),
                                                    iemCImpl_repne_cmps_op16_addr64, pVCpu->iem.s.iEffSeg);
                    IEM_NOT_REACHED_DEFAULT_CASE_RET();
                }
                break;
            case IEMMODE_32BIT:
                switch (pVCpu->iem.s.enmEffAddrMode)
                {
                    case IEMMODE_16BIT:
                        IEM_MC_DEFER_TO_CIMPL_1_RET(IEM_CIMPL_F_REP | IEM_CIMPL_F_STATUS_FLAGS,
                                                      RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xSI)
                                                    | RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xDI)
                                                    | RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xCX),
                                                    iemCImpl_repne_cmps_op32_addr16, pVCpu->iem.s.iEffSeg);
                    case IEMMODE_32BIT:
                        IEM_MC_DEFER_TO_CIMPL_1_RET(IEM_CIMPL_F_REP | IEM_CIMPL_F_STATUS_FLAGS,
                                                      RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xSI)
                                                    | RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xDI)
                                                    | RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xCX),
                                                    iemCImpl_repne_cmps_op32_addr32, pVCpu->iem.s.iEffSeg);
                    case IEMMODE_64BIT:
                        IEM_MC_DEFER_TO_CIMPL_1_RET(IEM_CIMPL_F_REP | IEM_CIMPL_F_STATUS_FLAGS,
                                                      RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xSI)
                                                    | RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xDI)
                                                    | RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xCX),
                                                    iemCImpl_repne_cmps_op32_addr64, pVCpu->iem.s.iEffSeg);
                    IEM_NOT_REACHED_DEFAULT_CASE_RET();
                }
            case IEMMODE_64BIT:
                switch (pVCpu->iem.s.enmEffAddrMode)
                {
                    case IEMMODE_16BIT: AssertFailedReturn(VERR_IEM_IPE_2);
                    case IEMMODE_32BIT:
                        IEM_MC_DEFER_TO_CIMPL_1_RET(IEM_CIMPL_F_REP | IEM_CIMPL_F_STATUS_FLAGS,
                                                      RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xSI)
                                                    | RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xDI)
                                                    | RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xCX),
                                                    iemCImpl_repne_cmps_op64_addr32, pVCpu->iem.s.iEffSeg);
                    case IEMMODE_64BIT:
                        IEM_MC_DEFER_TO_CIMPL_1_RET(IEM_CIMPL_F_REP | IEM_CIMPL_F_STATUS_FLAGS,
                                                      RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xSI)
                                                    | RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xDI)
                                                    | RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xCX),
                                                    iemCImpl_repne_cmps_op64_addr64, pVCpu->iem.s.iEffSeg);
                    IEM_NOT_REACHED_DEFAULT_CASE_RET();
                }
            IEM_NOT_REACHED_DEFAULT_CASE_RET();
        }
    }

    /*
     * Annoying double switch here.
     * Using ugly macro for implementing the cases, sharing it with cmpsb.
     */
    IEMOP_MNEMONIC(cmps_Xv_Yv, "cmps Xv,Yv");
    switch (pVCpu->iem.s.enmEffOpSize)
    {
        case IEMMODE_16BIT:
            switch (pVCpu->iem.s.enmEffAddrMode)
            {
                case IEMMODE_16BIT: IEM_CMPS_CASE(16, 16, IEM_MC_F_NOT_64BIT); break;
                case IEMMODE_32BIT: IEM_CMPS_CASE(16, 32, IEM_MC_F_MIN_386); break;
                case IEMMODE_64BIT: IEM_CMPS_CASE(16, 64, IEM_MC_F_64BIT); break;
                IEM_NOT_REACHED_DEFAULT_CASE_RET();
            }
            break;

        case IEMMODE_32BIT:
            switch (pVCpu->iem.s.enmEffAddrMode)
            {
                case IEMMODE_16BIT: IEM_CMPS_CASE(32, 16, IEM_MC_F_MIN_386 | IEM_MC_F_NOT_64BIT); break;
                case IEMMODE_32BIT: IEM_CMPS_CASE(32, 32, IEM_MC_F_MIN_386); break;
                case IEMMODE_64BIT: IEM_CMPS_CASE(32, 64, IEM_MC_F_64BIT); break;
                IEM_NOT_REACHED_DEFAULT_CASE_RET();
            }
            break;

        case IEMMODE_64BIT:
            switch (pVCpu->iem.s.enmEffAddrMode)
            {
                case IEMMODE_16BIT: AssertFailedReturn(VERR_IEM_IPE_1); /* cannot be encoded */ break;
                case IEMMODE_32BIT: IEM_CMPS_CASE(64, 32, IEM_MC_F_MIN_386); break;
                case IEMMODE_64BIT: IEM_CMPS_CASE(64, 64, IEM_MC_F_64BIT); break;
                IEM_NOT_REACHED_DEFAULT_CASE_RET();
            }
            break;
        IEM_NOT_REACHED_DEFAULT_CASE_RET();
    }
}

#undef IEM_CMPS_CASE

/**
 * @opcode      0xa8
 * @opflclass   logical
 */
FNIEMOP_DEF(iemOp_test_AL_Ib)
{
    IEMOP_MNEMONIC(test_al_Ib, "test al,Ib");
    IEMOP_VERIFICATION_UNDEFINED_EFLAGS(X86_EFL_AF);
    IEMOP_BODY_BINARY_AL_Ib(test, RT_ARCH_VAL_AMD64 | RT_ARCH_VAL_ARM64);
}


/**
 * @opcode      0xa9
 * @opflclass   logical
 */
FNIEMOP_DEF(iemOp_test_eAX_Iz)
{
    IEMOP_MNEMONIC(test_rAX_Iz, "test rAX,Iz");
    IEMOP_VERIFICATION_UNDEFINED_EFLAGS(X86_EFL_AF);
    IEMOP_BODY_BINARY_rAX_Iz_RO(test, RT_ARCH_VAL_AMD64 | RT_ARCH_VAL_ARM64);
}


/** Macro used by iemOp_stosb_Yb_AL and iemOp_stoswd_Yv_eAX */
#define IEM_STOS_CASE(ValBits, AddrBits, a_fMcFlags) \
        IEM_MC_BEGIN(a_fMcFlags, 0); \
        IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX(); \
        IEM_MC_LOCAL(uint##ValBits##_t, uValue); \
        IEM_MC_LOCAL(RTGCPTR, uAddr); \
        IEM_MC_FETCH_GREG_U##ValBits(uValue, X86_GREG_xAX); \
        IEM_MC_FETCH_GREG_U##AddrBits##_ZX_U64(uAddr,  X86_GREG_xDI); \
        IEM_MC_STORE_MEM_U##ValBits(X86_SREG_ES, uAddr, uValue); \
        IEM_MC_IF_EFL_BIT_SET(X86_EFL_DF) { \
            IEM_MC_SUB_GREG_U##AddrBits(X86_GREG_xDI, ValBits / 8); \
        } IEM_MC_ELSE() { \
            IEM_MC_ADD_GREG_U##AddrBits(X86_GREG_xDI, ValBits / 8); \
        } IEM_MC_ENDIF(); \
        IEM_MC_ADVANCE_RIP_AND_FINISH(); \
        IEM_MC_END() \

/**
 * @opcode      0xaa
 */
FNIEMOP_DEF(iemOp_stosb_Yb_AL)
{
    /*
     * Use the C implementation if a repeat prefix is encountered.
     */
    if (pVCpu->iem.s.fPrefixes & (IEM_OP_PRF_REPNZ | IEM_OP_PRF_REPZ))
    {
        IEMOP_MNEMONIC(rep_stos_Yb_al, "rep stos Yb,al");
        IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
        switch (pVCpu->iem.s.enmEffAddrMode)
        {
            case IEMMODE_16BIT:
                IEM_MC_DEFER_TO_CIMPL_0_RET(IEM_CIMPL_F_REP,
                                              RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xDI)
                                            | RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xCX),
                                            iemCImpl_stos_al_m16);
            case IEMMODE_32BIT:
                IEM_MC_DEFER_TO_CIMPL_0_RET(IEM_CIMPL_F_REP,
                                              RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xDI)
                                            | RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xCX),
                                            iemCImpl_stos_al_m32);
            case IEMMODE_64BIT:
                IEM_MC_DEFER_TO_CIMPL_0_RET(IEM_CIMPL_F_REP,
                                              RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xDI)
                                            | RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xCX),
                                            iemCImpl_stos_al_m64);
            IEM_NOT_REACHED_DEFAULT_CASE_RET();
        }
    }

    /*
     * Sharing case implementation with stos[wdq] below.
     */
    IEMOP_MNEMONIC(stos_Yb_al, "stos Yb,al");
    switch (pVCpu->iem.s.enmEffAddrMode)
    {
        case IEMMODE_16BIT: IEM_STOS_CASE(8, 16, IEM_MC_F_NOT_64BIT); break;
        case IEMMODE_32BIT: IEM_STOS_CASE(8, 32, IEM_MC_F_MIN_386); break;
        case IEMMODE_64BIT: IEM_STOS_CASE(8, 64, IEM_MC_F_64BIT); break;
        IEM_NOT_REACHED_DEFAULT_CASE_RET();
    }
}


/**
 * @opcode      0xab
 */
FNIEMOP_DEF(iemOp_stoswd_Yv_eAX)
{
    /*
     * Use the C implementation if a repeat prefix is encountered.
     */
    if (pVCpu->iem.s.fPrefixes & (IEM_OP_PRF_REPNZ | IEM_OP_PRF_REPZ))
    {
        IEMOP_MNEMONIC(rep_stos_Yv_rAX, "rep stos Yv,rAX");
        IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
        switch (pVCpu->iem.s.enmEffOpSize)
        {
            case IEMMODE_16BIT:
                switch (pVCpu->iem.s.enmEffAddrMode)
                {
                    case IEMMODE_16BIT:
                        IEM_MC_DEFER_TO_CIMPL_0_RET(IEM_CIMPL_F_REP | IEM_CIMPL_F_REP,
                                                      RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xDI)
                                                    | RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xCX),
                                                    iemCImpl_stos_ax_m16);
                    case IEMMODE_32BIT:
                        IEM_MC_DEFER_TO_CIMPL_0_RET(IEM_CIMPL_F_REP | IEM_CIMPL_F_REP,
                                                      RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xDI)
                                                    | RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xCX),
                                                    iemCImpl_stos_ax_m32);
                    case IEMMODE_64BIT:
                        IEM_MC_DEFER_TO_CIMPL_0_RET(IEM_CIMPL_F_REP | IEM_CIMPL_F_REP,
                                                      RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xDI)
                                                    | RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xCX),
                                                    iemCImpl_stos_ax_m64);
                    IEM_NOT_REACHED_DEFAULT_CASE_RET();
                }
                break;
            case IEMMODE_32BIT:
                switch (pVCpu->iem.s.enmEffAddrMode)
                {
                    case IEMMODE_16BIT:
                        IEM_MC_DEFER_TO_CIMPL_0_RET(IEM_CIMPL_F_REP | IEM_CIMPL_F_REP,
                                                      RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xDI)
                                                    | RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xCX),
                                                    iemCImpl_stos_eax_m16);
                    case IEMMODE_32BIT:
                        IEM_MC_DEFER_TO_CIMPL_0_RET(IEM_CIMPL_F_REP | IEM_CIMPL_F_REP,
                                                      RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xDI)
                                                    | RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xCX),
                                                    iemCImpl_stos_eax_m32);
                    case IEMMODE_64BIT:
                        IEM_MC_DEFER_TO_CIMPL_0_RET(IEM_CIMPL_F_REP | IEM_CIMPL_F_REP,
                                                      RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xDI)
                                                    | RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xCX),
                                                    iemCImpl_stos_eax_m64);
                    IEM_NOT_REACHED_DEFAULT_CASE_RET();
                }
            case IEMMODE_64BIT:
                switch (pVCpu->iem.s.enmEffAddrMode)
                {
                    case IEMMODE_16BIT: AssertFailedReturn(VERR_IEM_IPE_9);
                    case IEMMODE_32BIT:
                        IEM_MC_DEFER_TO_CIMPL_0_RET(IEM_CIMPL_F_REP | IEM_CIMPL_F_REP,
                                                      RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xDI)
                                                    | RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xCX),
                                                    iemCImpl_stos_rax_m32);
                    case IEMMODE_64BIT:
                        IEM_MC_DEFER_TO_CIMPL_0_RET(IEM_CIMPL_F_REP | IEM_CIMPL_F_REP,
                                                      RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xDI)
                                                    | RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xCX),
                                                    iemCImpl_stos_rax_m64);
                    IEM_NOT_REACHED_DEFAULT_CASE_RET();
                }
            IEM_NOT_REACHED_DEFAULT_CASE_RET();
        }
    }

    /*
     * Annoying double switch here.
     * Using ugly macro for implementing the cases, sharing it with stosb.
     */
    IEMOP_MNEMONIC(stos_Yv_rAX, "stos Yv,rAX");
    switch (pVCpu->iem.s.enmEffOpSize)
    {
        case IEMMODE_16BIT:
            switch (pVCpu->iem.s.enmEffAddrMode)
            {
                case IEMMODE_16BIT: IEM_STOS_CASE(16, 16, IEM_MC_F_NOT_64BIT); break;
                case IEMMODE_32BIT: IEM_STOS_CASE(16, 32, IEM_MC_F_MIN_386); break;
                case IEMMODE_64BIT: IEM_STOS_CASE(16, 64, IEM_MC_F_64BIT); break;
                IEM_NOT_REACHED_DEFAULT_CASE_RET();
            }
            break;

        case IEMMODE_32BIT:
            switch (pVCpu->iem.s.enmEffAddrMode)
            {
                case IEMMODE_16BIT: IEM_STOS_CASE(32, 16, IEM_MC_F_MIN_386 | IEM_MC_F_NOT_64BIT); break;
                case IEMMODE_32BIT: IEM_STOS_CASE(32, 32, IEM_MC_F_MIN_386); break;
                case IEMMODE_64BIT: IEM_STOS_CASE(32, 64, IEM_MC_F_64BIT); break;
                IEM_NOT_REACHED_DEFAULT_CASE_RET();
            }
            break;

        case IEMMODE_64BIT:
            switch (pVCpu->iem.s.enmEffAddrMode)
            {
                case IEMMODE_16BIT: AssertFailedReturn(VERR_IEM_IPE_1); /* cannot be encoded */ break;
                case IEMMODE_32BIT: IEM_STOS_CASE(64, 32, IEM_MC_F_64BIT); break;
                case IEMMODE_64BIT: IEM_STOS_CASE(64, 64, IEM_MC_F_64BIT); break;
                IEM_NOT_REACHED_DEFAULT_CASE_RET();
            }
            break;
        IEM_NOT_REACHED_DEFAULT_CASE_RET();
    }
}

#undef IEM_STOS_CASE

/** Macro used by iemOp_lodsb_AL_Xb and iemOp_lodswd_eAX_Xv */
#define IEM_LODS_CASE(ValBits, AddrBits, a_fMcFlags) \
        IEM_MC_BEGIN(a_fMcFlags, 0); \
        IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX(); \
        IEM_MC_LOCAL(uint##ValBits##_t, uValue); \
        IEM_MC_LOCAL(RTGCPTR, uAddr); \
        IEM_MC_FETCH_GREG_U##AddrBits##_ZX_U64(uAddr, X86_GREG_xSI); \
        IEM_MC_FETCH_MEM_U##ValBits(uValue, pVCpu->iem.s.iEffSeg, uAddr); \
        IEM_MC_STORE_GREG_U##ValBits(X86_GREG_xAX, uValue); \
        IEM_MC_IF_EFL_BIT_SET(X86_EFL_DF) { \
            IEM_MC_SUB_GREG_U##AddrBits(X86_GREG_xSI, ValBits / 8); \
        } IEM_MC_ELSE() { \
            IEM_MC_ADD_GREG_U##AddrBits(X86_GREG_xSI, ValBits / 8); \
        } IEM_MC_ENDIF(); \
        IEM_MC_ADVANCE_RIP_AND_FINISH(); \
        IEM_MC_END() \

/**
 * @opcode      0xac
 * @opfltest    df
 */
FNIEMOP_DEF(iemOp_lodsb_AL_Xb)
{
    /*
     * Use the C implementation if a repeat prefix is encountered.
     */
    if (pVCpu->iem.s.fPrefixes & (IEM_OP_PRF_REPNZ | IEM_OP_PRF_REPZ))
    {
        IEMOP_MNEMONIC(rep_lodsb_AL_Xb, "rep lodsb AL,Xb");
        IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
        switch (pVCpu->iem.s.enmEffAddrMode)
        {
            case IEMMODE_16BIT:
                IEM_MC_DEFER_TO_CIMPL_1_RET(IEM_CIMPL_F_REP,
                                              RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xAX)
                                            | RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xSI)
                                            | RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xCX),
                                            iemCImpl_lods_al_m16, pVCpu->iem.s.iEffSeg);
            case IEMMODE_32BIT:
                IEM_MC_DEFER_TO_CIMPL_1_RET(IEM_CIMPL_F_REP,
                                              RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xAX)
                                            | RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xSI)
                                            | RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xCX),
                                            iemCImpl_lods_al_m32, pVCpu->iem.s.iEffSeg);
            case IEMMODE_64BIT:
                IEM_MC_DEFER_TO_CIMPL_1_RET(IEM_CIMPL_F_REP,
                                              RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xAX)
                                            | RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xSI)
                                            | RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xCX),
                                            iemCImpl_lods_al_m64, pVCpu->iem.s.iEffSeg);
            IEM_NOT_REACHED_DEFAULT_CASE_RET();
        }
    }

    /*
     * Sharing case implementation with stos[wdq] below.
     */
    IEMOP_MNEMONIC(lodsb_AL_Xb, "lodsb AL,Xb");
    switch (pVCpu->iem.s.enmEffAddrMode)
    {
        case IEMMODE_16BIT: IEM_LODS_CASE(8, 16, IEM_MC_F_NOT_64BIT); break;
        case IEMMODE_32BIT: IEM_LODS_CASE(8, 32, IEM_MC_F_MIN_386); break;
        case IEMMODE_64BIT: IEM_LODS_CASE(8, 64, IEM_MC_F_64BIT); break;
        IEM_NOT_REACHED_DEFAULT_CASE_RET();
    }
}


/**
 * @opcode      0xad
 * @opfltest    df
 */
FNIEMOP_DEF(iemOp_lodswd_eAX_Xv)
{
    /*
     * Use the C implementation if a repeat prefix is encountered.
     */
    if (pVCpu->iem.s.fPrefixes & (IEM_OP_PRF_REPNZ | IEM_OP_PRF_REPZ))
    {
        IEMOP_MNEMONIC(rep_lods_rAX_Xv, "rep lods rAX,Xv");
        IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
        switch (pVCpu->iem.s.enmEffOpSize)
        {
            case IEMMODE_16BIT:
                switch (pVCpu->iem.s.enmEffAddrMode)
                {
                    case IEMMODE_16BIT:
                        IEM_MC_DEFER_TO_CIMPL_1_RET(IEM_CIMPL_F_REP,
                                                      RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xAX)
                                                    | RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xSI)
                                                    | RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xCX),
                                                    iemCImpl_lods_ax_m16, pVCpu->iem.s.iEffSeg);
                    case IEMMODE_32BIT:
                        IEM_MC_DEFER_TO_CIMPL_1_RET(IEM_CIMPL_F_REP,
                                                      RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xAX)
                                                    | RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xSI)
                                                    | RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xCX),
                                                    iemCImpl_lods_ax_m32, pVCpu->iem.s.iEffSeg);
                    case IEMMODE_64BIT:
                        IEM_MC_DEFER_TO_CIMPL_1_RET(IEM_CIMPL_F_REP,
                                                      RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xAX)
                                                    | RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xSI)
                                                    | RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xCX),
                                                    iemCImpl_lods_ax_m64, pVCpu->iem.s.iEffSeg);
                    IEM_NOT_REACHED_DEFAULT_CASE_RET();
                }
                break;
            case IEMMODE_32BIT:
                switch (pVCpu->iem.s.enmEffAddrMode)
                {
                    case IEMMODE_16BIT:
                        IEM_MC_DEFER_TO_CIMPL_1_RET(IEM_CIMPL_F_REP,
                                                      RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xAX)
                                                    | RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xSI)
                                                    | RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xCX),
                                                    iemCImpl_lods_eax_m16, pVCpu->iem.s.iEffSeg);
                    case IEMMODE_32BIT:
                        IEM_MC_DEFER_TO_CIMPL_1_RET(IEM_CIMPL_F_REP,
                                                      RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xAX)
                                                    | RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xSI)
                                                    | RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xCX),
                                                    iemCImpl_lods_eax_m32, pVCpu->iem.s.iEffSeg);
                    case IEMMODE_64BIT:
                        IEM_MC_DEFER_TO_CIMPL_1_RET(IEM_CIMPL_F_REP,
                                                      RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xAX)
                                                    | RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xSI)
                                                    | RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xCX),
                                                    iemCImpl_lods_eax_m64, pVCpu->iem.s.iEffSeg);
                    IEM_NOT_REACHED_DEFAULT_CASE_RET();
                }
            case IEMMODE_64BIT:
                switch (pVCpu->iem.s.enmEffAddrMode)
                {
                    case IEMMODE_16BIT: AssertFailedReturn(VERR_IEM_IPE_7);
                    case IEMMODE_32BIT:
                        IEM_MC_DEFER_TO_CIMPL_1_RET(IEM_CIMPL_F_REP,
                                                      RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xAX)
                                                    | RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xSI)
                                                    | RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xCX),
                                                    iemCImpl_lods_rax_m32, pVCpu->iem.s.iEffSeg);
                    case IEMMODE_64BIT:
                        IEM_MC_DEFER_TO_CIMPL_1_RET(IEM_CIMPL_F_REP,
                                                      RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xAX)
                                                    | RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xSI)
                                                    | RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xCX),
                                                    iemCImpl_lods_rax_m64, pVCpu->iem.s.iEffSeg);
                    IEM_NOT_REACHED_DEFAULT_CASE_RET();
                }
            IEM_NOT_REACHED_DEFAULT_CASE_RET();
        }
    }

    /*
     * Annoying double switch here.
     * Using ugly macro for implementing the cases, sharing it with lodsb.
     */
    IEMOP_MNEMONIC(lods_rAX_Xv, "lods rAX,Xv");
    switch (pVCpu->iem.s.enmEffOpSize)
    {
        case IEMMODE_16BIT:
            switch (pVCpu->iem.s.enmEffAddrMode)
            {
                case IEMMODE_16BIT: IEM_LODS_CASE(16, 16, IEM_MC_F_NOT_64BIT); break;
                case IEMMODE_32BIT: IEM_LODS_CASE(16, 32, IEM_MC_F_MIN_386); break;
                case IEMMODE_64BIT: IEM_LODS_CASE(16, 64, IEM_MC_F_64BIT); break;
                IEM_NOT_REACHED_DEFAULT_CASE_RET();
            }
            break;

        case IEMMODE_32BIT:
            switch (pVCpu->iem.s.enmEffAddrMode)
            {
                case IEMMODE_16BIT: IEM_LODS_CASE(32, 16, IEM_MC_F_MIN_386 | IEM_MC_F_NOT_64BIT); break;
                case IEMMODE_32BIT: IEM_LODS_CASE(32, 32, IEM_MC_F_MIN_386); break;
                case IEMMODE_64BIT: IEM_LODS_CASE(32, 64, IEM_MC_F_64BIT); break;
                IEM_NOT_REACHED_DEFAULT_CASE_RET();
            }
            break;

        case IEMMODE_64BIT:
            switch (pVCpu->iem.s.enmEffAddrMode)
            {
                case IEMMODE_16BIT: AssertFailedReturn(VERR_IEM_IPE_1); /* cannot be encoded */ break;
                case IEMMODE_32BIT: IEM_LODS_CASE(64, 32, IEM_MC_F_64BIT); break;
                case IEMMODE_64BIT: IEM_LODS_CASE(64, 64, IEM_MC_F_64BIT); break;
                IEM_NOT_REACHED_DEFAULT_CASE_RET();
            }
            break;
        IEM_NOT_REACHED_DEFAULT_CASE_RET();
    }
}

#undef IEM_LODS_CASE

/** Macro used by iemOp_scasb_AL_Xb and iemOp_scaswd_eAX_Xv */
#define IEM_SCAS_CASE(ValBits, AddrBits, a_fMcFlags) \
        IEM_MC_BEGIN(a_fMcFlags, 0); \
        IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX(); \
        \
        IEM_MC_LOCAL(RTGCPTR,           uAddr); \
        IEM_MC_FETCH_GREG_U##AddrBits##_ZX_U64(uAddr, X86_GREG_xDI); \
        \
        IEM_MC_ARG(uint##ValBits##_t,   uValue,     2); \
        IEM_MC_FETCH_MEM_U##ValBits(uValue, X86_SREG_ES, uAddr); \
        IEM_MC_ARG(uint##ValBits##_t *, puRax,      1); \
        IEM_MC_REF_GREG_U##ValBits(puRax, X86_GREG_xAX); \
        IEM_MC_ARG_EFLAGS(              fEFlagsIn,  0); \
        IEM_MC_CALL_AIMPL_3(uint32_t, fEFlagsRet, iemAImpl_cmp_u##ValBits, fEFlagsIn, puRax, uValue); \
        \
        IEM_MC_COMMIT_EFLAGS(fEFlagsRet);\
        IEM_MC_IF_EFL_BIT_SET(X86_EFL_DF) { \
            IEM_MC_SUB_GREG_U##AddrBits(X86_GREG_xDI, ValBits / 8); \
        } IEM_MC_ELSE() { \
            IEM_MC_ADD_GREG_U##AddrBits(X86_GREG_xDI, ValBits / 8); \
        } IEM_MC_ENDIF(); \
        IEM_MC_ADVANCE_RIP_AND_FINISH(); \
        IEM_MC_END();

/**
 * @opcode      0xae
 * @opflclass   arithmetic
 * @opfltest    df
 */
FNIEMOP_DEF(iemOp_scasb_AL_Xb)
{
    /*
     * Use the C implementation if a repeat prefix is encountered.
     */
    if (pVCpu->iem.s.fPrefixes & IEM_OP_PRF_REPZ)
    {
        IEMOP_MNEMONIC(repe_scasb_AL_Xb, "repe scasb AL,Xb");
        IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
        switch (pVCpu->iem.s.enmEffAddrMode)
        {
            case IEMMODE_16BIT:
                IEM_MC_DEFER_TO_CIMPL_0_RET(IEM_CIMPL_F_REP | IEM_CIMPL_F_STATUS_FLAGS,
                                              RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xDI)
                                            | RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xCX),
                                            iemCImpl_repe_scas_al_m16);
            case IEMMODE_32BIT:
                IEM_MC_DEFER_TO_CIMPL_0_RET(IEM_CIMPL_F_REP | IEM_CIMPL_F_STATUS_FLAGS,
                                              RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xDI)
                                            | RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xCX),
                                            iemCImpl_repe_scas_al_m32);
            case IEMMODE_64BIT:
                IEM_MC_DEFER_TO_CIMPL_0_RET(IEM_CIMPL_F_REP | IEM_CIMPL_F_STATUS_FLAGS,
                                              RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xDI)
                                            | RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xCX),
                                            iemCImpl_repe_scas_al_m64);
            IEM_NOT_REACHED_DEFAULT_CASE_RET();
        }
    }
    if (pVCpu->iem.s.fPrefixes & IEM_OP_PRF_REPNZ)
    {
        IEMOP_MNEMONIC(repone_scasb_AL_Xb, "repne scasb AL,Xb");
        IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
        switch (pVCpu->iem.s.enmEffAddrMode)
        {
            case IEMMODE_16BIT:
                IEM_MC_DEFER_TO_CIMPL_0_RET(IEM_CIMPL_F_REP | IEM_CIMPL_F_STATUS_FLAGS,
                                              RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xDI)
                                            | RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xCX),
                                            iemCImpl_repne_scas_al_m16);
            case IEMMODE_32BIT:
                IEM_MC_DEFER_TO_CIMPL_0_RET(IEM_CIMPL_F_REP | IEM_CIMPL_F_STATUS_FLAGS,
                                              RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xDI)
                                            | RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xCX),
                                            iemCImpl_repne_scas_al_m32);
            case IEMMODE_64BIT:
                IEM_MC_DEFER_TO_CIMPL_0_RET(IEM_CIMPL_F_REP | IEM_CIMPL_F_STATUS_FLAGS,
                                              RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xDI)
                                            | RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xCX),
                                            iemCImpl_repne_scas_al_m64);
            IEM_NOT_REACHED_DEFAULT_CASE_RET();
        }
    }

    /*
     * Sharing case implementation with stos[wdq] below.
     */
    IEMOP_MNEMONIC(scasb_AL_Xb, "scasb AL,Xb");
    switch (pVCpu->iem.s.enmEffAddrMode)
    {
        case IEMMODE_16BIT: IEM_SCAS_CASE(8, 16, IEM_MC_F_NOT_64BIT); break;
        case IEMMODE_32BIT: IEM_SCAS_CASE(8, 32, IEM_MC_F_MIN_386); break;
        case IEMMODE_64BIT: IEM_SCAS_CASE(8, 64, IEM_MC_F_64BIT); break;
        IEM_NOT_REACHED_DEFAULT_CASE_RET();
    }
}


/**
 * @opcode      0xaf
 * @opflclass   arithmetic
 * @opfltest    df
 */
FNIEMOP_DEF(iemOp_scaswd_eAX_Xv)
{
    /*
     * Use the C implementation if a repeat prefix is encountered.
     */
    if (pVCpu->iem.s.fPrefixes & IEM_OP_PRF_REPZ)
    {
        IEMOP_MNEMONIC(repe_scas_rAX_Xv, "repe scas rAX,Xv");
        IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
        switch (pVCpu->iem.s.enmEffOpSize)
        {
            case IEMMODE_16BIT:
                switch (pVCpu->iem.s.enmEffAddrMode)
                {
                    case IEMMODE_16BIT:
                        IEM_MC_DEFER_TO_CIMPL_0_RET(IEM_CIMPL_F_REP | IEM_CIMPL_F_STATUS_FLAGS,
                                                      RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xDI)
                                                    | RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xCX),
                                                    iemCImpl_repe_scas_ax_m16);
                    case IEMMODE_32BIT:
                        IEM_MC_DEFER_TO_CIMPL_0_RET(IEM_CIMPL_F_REP | IEM_CIMPL_F_STATUS_FLAGS,
                                                      RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xDI)
                                                    | RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xCX),
                                                    iemCImpl_repe_scas_ax_m32);
                    case IEMMODE_64BIT:
                        IEM_MC_DEFER_TO_CIMPL_0_RET(IEM_CIMPL_F_REP | IEM_CIMPL_F_STATUS_FLAGS,
                                                      RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xDI)
                                                    | RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xCX),
                                                    iemCImpl_repe_scas_ax_m64);
                    IEM_NOT_REACHED_DEFAULT_CASE_RET();
                }
                break;
            case IEMMODE_32BIT:
                switch (pVCpu->iem.s.enmEffAddrMode)
                {
                    case IEMMODE_16BIT:
                        IEM_MC_DEFER_TO_CIMPL_0_RET(IEM_CIMPL_F_REP | IEM_CIMPL_F_STATUS_FLAGS,
                                                      RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xDI)
                                                    | RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xCX),
                                                    iemCImpl_repe_scas_eax_m16);
                    case IEMMODE_32BIT:
                        IEM_MC_DEFER_TO_CIMPL_0_RET(IEM_CIMPL_F_REP | IEM_CIMPL_F_STATUS_FLAGS,
                                                      RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xDI)
                                                    | RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xCX),
                                                    iemCImpl_repe_scas_eax_m32);
                    case IEMMODE_64BIT:
                        IEM_MC_DEFER_TO_CIMPL_0_RET(IEM_CIMPL_F_REP | IEM_CIMPL_F_STATUS_FLAGS,
                                                      RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xDI)
                                                    | RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xCX),
                                                    iemCImpl_repe_scas_eax_m64);
                    IEM_NOT_REACHED_DEFAULT_CASE_RET();
                }
            case IEMMODE_64BIT:
                switch (pVCpu->iem.s.enmEffAddrMode)
                {
                    case IEMMODE_16BIT: AssertFailedReturn(VERR_IEM_IPE_6); /** @todo It's this wrong, we can do 16-bit addressing in 64-bit mode, but not 32-bit. right? */
                    case IEMMODE_32BIT:
                        IEM_MC_DEFER_TO_CIMPL_0_RET(IEM_CIMPL_F_REP | IEM_CIMPL_F_STATUS_FLAGS,
                                                      RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xDI)
                                                    | RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xCX),
                                                    iemCImpl_repe_scas_rax_m32);
                    case IEMMODE_64BIT:
                        IEM_MC_DEFER_TO_CIMPL_0_RET(IEM_CIMPL_F_REP | IEM_CIMPL_F_STATUS_FLAGS,
                                                      RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xDI)
                                                    | RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xCX),
                                                    iemCImpl_repe_scas_rax_m64);
                    IEM_NOT_REACHED_DEFAULT_CASE_RET();
                }
            IEM_NOT_REACHED_DEFAULT_CASE_RET();
        }
    }
    if (pVCpu->iem.s.fPrefixes & IEM_OP_PRF_REPNZ)
    {
        IEMOP_MNEMONIC(repne_scas_rAX_Xv, "repne scas rAX,Xv");
        IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
        switch (pVCpu->iem.s.enmEffOpSize)
        {
            case IEMMODE_16BIT:
                switch (pVCpu->iem.s.enmEffAddrMode)
                {
                    case IEMMODE_16BIT:
                        IEM_MC_DEFER_TO_CIMPL_0_RET(IEM_CIMPL_F_REP | IEM_CIMPL_F_STATUS_FLAGS,
                                                      RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xDI)
                                                    | RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xCX),
                                                    iemCImpl_repne_scas_ax_m16);
                    case IEMMODE_32BIT:
                        IEM_MC_DEFER_TO_CIMPL_0_RET(IEM_CIMPL_F_REP | IEM_CIMPL_F_STATUS_FLAGS,
                                                      RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xDI)
                                                    | RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xCX),
                                                    iemCImpl_repne_scas_ax_m32);
                    case IEMMODE_64BIT:
                        IEM_MC_DEFER_TO_CIMPL_0_RET(IEM_CIMPL_F_REP | IEM_CIMPL_F_STATUS_FLAGS,
                                                      RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xDI)
                                                    | RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xCX),
                                                    iemCImpl_repne_scas_ax_m64);
                    IEM_NOT_REACHED_DEFAULT_CASE_RET();
                }
                break;
            case IEMMODE_32BIT:
                switch (pVCpu->iem.s.enmEffAddrMode)
                {
                    case IEMMODE_16BIT:
                        IEM_MC_DEFER_TO_CIMPL_0_RET(IEM_CIMPL_F_REP | IEM_CIMPL_F_STATUS_FLAGS,
                                                      RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xDI)
                                                    | RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xCX),
                                                    iemCImpl_repne_scas_eax_m16);
                    case IEMMODE_32BIT:
                        IEM_MC_DEFER_TO_CIMPL_0_RET(IEM_CIMPL_F_REP | IEM_CIMPL_F_STATUS_FLAGS,
                                                      RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xDI)
                                                    | RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xCX),
                                                    iemCImpl_repne_scas_eax_m32);
                    case IEMMODE_64BIT:
                        IEM_MC_DEFER_TO_CIMPL_0_RET(IEM_CIMPL_F_REP | IEM_CIMPL_F_STATUS_FLAGS,
                                                      RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xDI)
                                                    | RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xCX),
                                                    iemCImpl_repne_scas_eax_m64);
                    IEM_NOT_REACHED_DEFAULT_CASE_RET();
                }
            case IEMMODE_64BIT:
                switch (pVCpu->iem.s.enmEffAddrMode)
                {
                    case IEMMODE_16BIT: AssertFailedReturn(VERR_IEM_IPE_5);
                    case IEMMODE_32BIT:
                        IEM_MC_DEFER_TO_CIMPL_0_RET(IEM_CIMPL_F_REP | IEM_CIMPL_F_STATUS_FLAGS,
                                                      RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xDI)
                                                    | RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xCX),
                                                    iemCImpl_repne_scas_rax_m32);
                    case IEMMODE_64BIT:
                        IEM_MC_DEFER_TO_CIMPL_0_RET(IEM_CIMPL_F_REP | IEM_CIMPL_F_STATUS_FLAGS,
                                                      RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xDI)
                                                    | RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xCX),
                                                    iemCImpl_repne_scas_rax_m64);
                    IEM_NOT_REACHED_DEFAULT_CASE_RET();
                }
            IEM_NOT_REACHED_DEFAULT_CASE_RET();
        }
    }

    /*
     * Annoying double switch here.
     * Using ugly macro for implementing the cases, sharing it with scasb.
     */
    IEMOP_MNEMONIC(scas_rAX_Xv, "scas rAX,Xv");
    switch (pVCpu->iem.s.enmEffOpSize)
    {
        case IEMMODE_16BIT:
            switch (pVCpu->iem.s.enmEffAddrMode)
            {
                case IEMMODE_16BIT: IEM_SCAS_CASE(16, 16, IEM_MC_F_NOT_64BIT); break;
                case IEMMODE_32BIT: IEM_SCAS_CASE(16, 32, IEM_MC_F_MIN_386); break;
                case IEMMODE_64BIT: IEM_SCAS_CASE(16, 64, IEM_MC_F_64BIT); break;
                IEM_NOT_REACHED_DEFAULT_CASE_RET();
            }
            break;

        case IEMMODE_32BIT:
            switch (pVCpu->iem.s.enmEffAddrMode)
            {
                case IEMMODE_16BIT: IEM_SCAS_CASE(32, 16, IEM_MC_F_MIN_386 | IEM_MC_F_NOT_64BIT); break;
                case IEMMODE_32BIT: IEM_SCAS_CASE(32, 32, IEM_MC_F_MIN_386); break;
                case IEMMODE_64BIT: IEM_SCAS_CASE(32, 64, IEM_MC_F_64BIT); break;
                IEM_NOT_REACHED_DEFAULT_CASE_RET();
            }
            break;

        case IEMMODE_64BIT:
            switch (pVCpu->iem.s.enmEffAddrMode)
            {
                case IEMMODE_16BIT: AssertFailedReturn(VERR_IEM_IPE_1); /* cannot be encoded */ break;
                case IEMMODE_32BIT: IEM_SCAS_CASE(64, 32, IEM_MC_F_64BIT); break;
                case IEMMODE_64BIT: IEM_SCAS_CASE(64, 64, IEM_MC_F_64BIT); break;
                IEM_NOT_REACHED_DEFAULT_CASE_RET();
            }
            break;
        IEM_NOT_REACHED_DEFAULT_CASE_RET();
    }
}

#undef IEM_SCAS_CASE

/**
 * Common 'mov r8, imm8' helper.
 */
FNIEMOP_DEF_1(iemOpCommonMov_r8_Ib, uint8_t, iFixedReg)
{
    uint8_t u8Imm; IEM_OPCODE_GET_NEXT_U8(&u8Imm);
    IEM_MC_BEGIN(0, 0);
    IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
    IEM_MC_STORE_GREG_U8_CONST(iFixedReg, u8Imm);
    IEM_MC_ADVANCE_RIP_AND_FINISH();
    IEM_MC_END();
}


/**
 * @opcode      0xb0
 */
FNIEMOP_DEF(iemOp_mov_AL_Ib)
{
    IEMOP_MNEMONIC(mov_AL_Ib, "mov AL,Ib");
    return FNIEMOP_CALL_1(iemOpCommonMov_r8_Ib, X86_GREG_xAX | pVCpu->iem.s.uRexB);
}


/**
 * @opcode      0xb1
 */
FNIEMOP_DEF(iemOp_CL_Ib)
{
    IEMOP_MNEMONIC(mov_CL_Ib, "mov CL,Ib");
    return FNIEMOP_CALL_1(iemOpCommonMov_r8_Ib, X86_GREG_xCX | pVCpu->iem.s.uRexB);
}


/**
 * @opcode      0xb2
 */
FNIEMOP_DEF(iemOp_DL_Ib)
{
    IEMOP_MNEMONIC(mov_DL_Ib, "mov DL,Ib");
    return FNIEMOP_CALL_1(iemOpCommonMov_r8_Ib, X86_GREG_xDX | pVCpu->iem.s.uRexB);
}


/**
 * @opcode      0xb3
 */
FNIEMOP_DEF(iemOp_BL_Ib)
{
    IEMOP_MNEMONIC(mov_BL_Ib, "mov BL,Ib");
    return FNIEMOP_CALL_1(iemOpCommonMov_r8_Ib, X86_GREG_xBX | pVCpu->iem.s.uRexB);
}


/**
 * @opcode      0xb4
 */
FNIEMOP_DEF(iemOp_mov_AH_Ib)
{
    IEMOP_MNEMONIC(mov_AH_Ib, "mov AH,Ib");
    return FNIEMOP_CALL_1(iemOpCommonMov_r8_Ib, X86_GREG_xSP | pVCpu->iem.s.uRexB);
}


/**
 * @opcode      0xb5
 */
FNIEMOP_DEF(iemOp_CH_Ib)
{
    IEMOP_MNEMONIC(mov_CH_Ib, "mov CH,Ib");
    return FNIEMOP_CALL_1(iemOpCommonMov_r8_Ib, X86_GREG_xBP | pVCpu->iem.s.uRexB);
}


/**
 * @opcode      0xb6
 */
FNIEMOP_DEF(iemOp_DH_Ib)
{
    IEMOP_MNEMONIC(mov_DH_Ib, "mov DH,Ib");
    return FNIEMOP_CALL_1(iemOpCommonMov_r8_Ib, X86_GREG_xSI | pVCpu->iem.s.uRexB);
}


/**
 * @opcode      0xb7
 */
FNIEMOP_DEF(iemOp_BH_Ib)
{
    IEMOP_MNEMONIC(mov_BH_Ib, "mov BH,Ib");
    return FNIEMOP_CALL_1(iemOpCommonMov_r8_Ib, X86_GREG_xDI | pVCpu->iem.s.uRexB);
}


/**
 * Common 'mov regX,immX' helper.
 */
FNIEMOP_DEF_1(iemOpCommonMov_Rv_Iv, uint8_t, iFixedReg)
{
    switch (pVCpu->iem.s.enmEffOpSize)
    {
        case IEMMODE_16BIT:
            IEM_MC_BEGIN(0, 0);
            uint16_t u16Imm; IEM_OPCODE_GET_NEXT_U16(&u16Imm);
            IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
            IEM_MC_STORE_GREG_U16_CONST(iFixedReg, u16Imm);
            IEM_MC_ADVANCE_RIP_AND_FINISH();
            IEM_MC_END();
            break;

        case IEMMODE_32BIT:
            IEM_MC_BEGIN(IEM_MC_F_MIN_386, 0);
            uint32_t u32Imm; IEM_OPCODE_GET_NEXT_U32(&u32Imm);
            IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
            IEM_MC_STORE_GREG_U32_CONST(iFixedReg, u32Imm);
            IEM_MC_ADVANCE_RIP_AND_FINISH();
            IEM_MC_END();
            break;

        case IEMMODE_64BIT:
            IEM_MC_BEGIN(IEM_MC_F_64BIT, 0);
            uint64_t u64Imm; IEM_OPCODE_GET_NEXT_U64(&u64Imm); /* 64-bit immediate! */
            IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
            IEM_MC_STORE_GREG_U64_CONST(iFixedReg, u64Imm);
            IEM_MC_ADVANCE_RIP_AND_FINISH();
            IEM_MC_END();
            break;
        IEM_NOT_REACHED_DEFAULT_CASE_RET();
    }
}


/**
 * @opcode      0xb8
 */
FNIEMOP_DEF(iemOp_eAX_Iv)
{
    IEMOP_MNEMONIC(mov_rAX_IV, "mov rAX,IV");
    return FNIEMOP_CALL_1(iemOpCommonMov_Rv_Iv, X86_GREG_xAX | pVCpu->iem.s.uRexB);
}


/**
 * @opcode      0xb9
 */
FNIEMOP_DEF(iemOp_eCX_Iv)
{
    IEMOP_MNEMONIC(mov_rCX_IV, "mov rCX,IV");
    return FNIEMOP_CALL_1(iemOpCommonMov_Rv_Iv, X86_GREG_xCX | pVCpu->iem.s.uRexB);
}


/**
 * @opcode      0xba
 */
FNIEMOP_DEF(iemOp_eDX_Iv)
{
    IEMOP_MNEMONIC(mov_rDX_IV, "mov rDX,IV");
    return FNIEMOP_CALL_1(iemOpCommonMov_Rv_Iv, X86_GREG_xDX | pVCpu->iem.s.uRexB);
}


/**
 * @opcode      0xbb
 */
FNIEMOP_DEF(iemOp_eBX_Iv)
{
    IEMOP_MNEMONIC(mov_rBX_IV, "mov rBX,IV");
    return FNIEMOP_CALL_1(iemOpCommonMov_Rv_Iv, X86_GREG_xBX | pVCpu->iem.s.uRexB);
}


/**
 * @opcode      0xbc
 */
FNIEMOP_DEF(iemOp_eSP_Iv)
{
    IEMOP_MNEMONIC(mov_rSP_IV, "mov rSP,IV");
    return FNIEMOP_CALL_1(iemOpCommonMov_Rv_Iv, X86_GREG_xSP | pVCpu->iem.s.uRexB);
}


/**
 * @opcode      0xbd
 */
FNIEMOP_DEF(iemOp_eBP_Iv)
{
    IEMOP_MNEMONIC(mov_rBP_IV, "mov rBP,IV");
    return FNIEMOP_CALL_1(iemOpCommonMov_Rv_Iv, X86_GREG_xBP | pVCpu->iem.s.uRexB);
}


/**
 * @opcode      0xbe
 */
FNIEMOP_DEF(iemOp_eSI_Iv)
{
    IEMOP_MNEMONIC(mov_rSI_IV, "mov rSI,IV");
    return FNIEMOP_CALL_1(iemOpCommonMov_Rv_Iv, X86_GREG_xSI | pVCpu->iem.s.uRexB);
}


/**
 * @opcode      0xbf
 */
FNIEMOP_DEF(iemOp_eDI_Iv)
{
    IEMOP_MNEMONIC(mov_rDI_IV, "mov rDI,IV");
    return FNIEMOP_CALL_1(iemOpCommonMov_Rv_Iv, X86_GREG_xDI | pVCpu->iem.s.uRexB);
}


/**
 * @opcode      0xc0
 */
FNIEMOP_DEF(iemOp_Grp2_Eb_Ib)
{
    IEMOP_HLP_MIN_186();
    uint8_t bRm; IEM_OPCODE_GET_NEXT_U8(&bRm);

    /* Need to use a body macro here since the EFLAGS behaviour differs between
       the shifts, rotates and rotate w/ carry. Sigh. */
#define GRP2_BODY_Eb_Ib(a_pImplExpr) \
        PCIEMOPSHIFTSIZES const pImpl = (a_pImplExpr); \
        if (IEM_IS_MODRM_REG_MODE(bRm)) \
        { \
            /* register */ \
            uint8_t cShift; IEM_OPCODE_GET_NEXT_U8(&cShift); \
            IEM_MC_BEGIN(IEM_MC_F_MIN_186, 0); \
            IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX(); \
            IEM_MC_ARG(uint8_t *,       pu8Dst,                     1); \
            IEM_MC_REF_GREG_U8(pu8Dst, IEM_GET_MODRM_RM(pVCpu, bRm)); \
            IEM_MC_ARG_EFLAGS(          fEFlagsIn,                  0); \
            IEM_MC_ARG_CONST(uint8_t,   cShiftArg, /*=*/ cShift,    2); \
            IEM_MC_CALL_AIMPL_3(uint32_t, fEFlagsRet, pImpl->pfnNormalU8, fEFlagsIn, pu8Dst, cShiftArg); \
            IEM_MC_COMMIT_EFLAGS(fEFlagsRet); \
            IEM_MC_ADVANCE_RIP_AND_FINISH(); \
            IEM_MC_END(); \
        } \
        else \
        { \
            /* memory */ \
            IEM_MC_BEGIN(IEM_MC_F_MIN_186, 0); \
            IEM_MC_LOCAL(RTGCPTR, GCPtrEffDst); \
            IEM_MC_CALC_RM_EFF_ADDR(GCPtrEffDst, bRm, 1); \
            \
            uint8_t cShift; IEM_OPCODE_GET_NEXT_U8(&cShift); \
            IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX(); \
            \
            IEM_MC_LOCAL(uint8_t,       bUnmapInfo); \
            IEM_MC_ARG(uint8_t *,       pu8Dst,                     1); \
            IEM_MC_MEM_MAP_U8_RW(pu8Dst, bUnmapInfo, pVCpu->iem.s.iEffSeg, GCPtrEffDst); \
            \
            IEM_MC_ARG_EFLAGS(          fEFlagsIn,                  0); \
            IEM_MC_ARG_CONST(uint8_t,   cShiftArg, /*=*/ cShift,    2); \
            IEM_MC_CALL_AIMPL_3(uint32_t, fEFlagsRet, pImpl->pfnNormalU8, fEFlagsIn, pu8Dst, cShiftArg); \
            \
            IEM_MC_MEM_COMMIT_AND_UNMAP_RW(bUnmapInfo); \
            IEM_MC_COMMIT_EFLAGS(fEFlagsRet); \
            IEM_MC_ADVANCE_RIP_AND_FINISH(); \
            IEM_MC_END(); \
        } (void)0

    switch (IEM_GET_MODRM_REG_8(bRm))
    {
        /**
         * @opdone
         * @opmaps      grp2_c0
         * @opcode      /0
         * @opflclass   rotate_count
         */
        case 0:
        {
            IEMOP_MNEMONIC2(MI, ROL, rol, Eb, Ib, DISOPTYPE_HARMLESS, 0);
            IEMOP_VERIFICATION_UNDEFINED_EFLAGS(X86_EFL_OF);
            GRP2_BODY_Eb_Ib(IEMTARGETCPU_EFL_BEHAVIOR_SELECT(g_iemAImpl_rol_eflags));
            break;
        }
        /**
         * @opdone
         * @opmaps      grp2_c0
         * @opcode      /1
         * @opflclass   rotate_count
         */
        case 1:
        {
            IEMOP_MNEMONIC2(MI, ROR, ror, Eb, Ib, DISOPTYPE_HARMLESS, 0);
            IEMOP_VERIFICATION_UNDEFINED_EFLAGS(X86_EFL_OF);
            GRP2_BODY_Eb_Ib(IEMTARGETCPU_EFL_BEHAVIOR_SELECT(g_iemAImpl_ror_eflags));
            break;
        }
        /**
         * @opdone
         * @opmaps      grp2_c0
         * @opcode      /2
         * @opflclass   rotate_carry_count
         */
        case 2:
        {
            IEMOP_MNEMONIC2(MI, RCL, rcl, Eb, Ib, DISOPTYPE_HARMLESS, 0);
            IEMOP_VERIFICATION_UNDEFINED_EFLAGS(X86_EFL_OF);
            GRP2_BODY_Eb_Ib(IEMTARGETCPU_EFL_BEHAVIOR_SELECT(g_iemAImpl_rcl_eflags));
            break;
        }
        /**
         * @opdone
         * @opmaps      grp2_c0
         * @opcode      /3
         * @opflclass   rotate_carry_count
         */
        case 3:
        {
            IEMOP_MNEMONIC2(MI, RCR, rcr, Eb, Ib, DISOPTYPE_HARMLESS, 0);
            IEMOP_VERIFICATION_UNDEFINED_EFLAGS(X86_EFL_OF);
            GRP2_BODY_Eb_Ib(IEMTARGETCPU_EFL_BEHAVIOR_SELECT(g_iemAImpl_rcr_eflags));
            break;
        }
        /**
         * @opdone
         * @opmaps      grp2_c0
         * @opcode      /4
         * @opflclass   shift_count
         */
        case 4:
        {
            IEMOP_MNEMONIC2(MI, SHL, shl, Eb, Ib, DISOPTYPE_HARMLESS, 0);
            IEMOP_VERIFICATION_UNDEFINED_EFLAGS(X86_EFL_OF | X86_EFL_AF);
            GRP2_BODY_Eb_Ib(IEMTARGETCPU_EFL_BEHAVIOR_SELECT(g_iemAImpl_shl_eflags));
            break;
        }
        /**
         * @opdone
         * @opmaps      grp2_c0
         * @opcode      /5
         * @opflclass   shift_count
         */
        case 5:
        {
            IEMOP_MNEMONIC2(MI, SHR, shr, Eb, Ib, DISOPTYPE_HARMLESS, 0);
            IEMOP_VERIFICATION_UNDEFINED_EFLAGS(X86_EFL_OF | X86_EFL_AF);
            GRP2_BODY_Eb_Ib(IEMTARGETCPU_EFL_BEHAVIOR_SELECT(g_iemAImpl_shr_eflags));
            break;
        }
        /**
         * @opdone
         * @opmaps      grp2_c0
         * @opcode      /7
         * @opflclass   shift_count
         */
        case 7:
        {
            IEMOP_MNEMONIC2(MI, SAR, sar, Eb, Ib, DISOPTYPE_HARMLESS, 0);
            IEMOP_VERIFICATION_UNDEFINED_EFLAGS(X86_EFL_OF | X86_EFL_AF);
            GRP2_BODY_Eb_Ib(IEMTARGETCPU_EFL_BEHAVIOR_SELECT(g_iemAImpl_sar_eflags));
            break;
        }

        /** @opdone */
        case 6: IEMOP_RAISE_INVALID_OPCODE_RET();
        IEM_NOT_REACHED_DEFAULT_CASE_RET(); /* gcc maybe stupid */
    }
#undef GRP2_BODY_Eb_Ib
}


/* Need to use a body macro here since the EFLAGS behaviour differs between
   the shifts, rotates and rotate w/ carry. Sigh. */
#define GRP2_BODY_Ev_Ib(a_pImplExpr) \
        PCIEMOPSHIFTSIZES const pImpl = (a_pImplExpr); \
        if (IEM_IS_MODRM_REG_MODE(bRm)) \
        { \
            /* register */ \
            uint8_t cShift; IEM_OPCODE_GET_NEXT_U8(&cShift); \
            switch (pVCpu->iem.s.enmEffOpSize) \
            { \
                case IEMMODE_16BIT: \
                    IEM_MC_BEGIN(IEM_MC_F_MIN_186, 0); \
                    IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX(); \
                    IEM_MC_ARG(uint16_t *,      pu16Dst,                    1); \
                    IEM_MC_REF_GREG_U16(pu16Dst, IEM_GET_MODRM_RM(pVCpu, bRm)); \
                    IEM_MC_ARG_EFLAGS(          fEFlagsIn,                  0); \
                    IEM_MC_ARG_CONST(uint8_t,   cShiftArg, /*=*/ cShift,    2); \
                    IEM_MC_CALL_AIMPL_3(uint32_t, fEFlagsRet, pImpl->pfnNormalU16, fEFlagsIn, pu16Dst, cShiftArg); \
                    IEM_MC_COMMIT_EFLAGS(fEFlagsRet); \
                    IEM_MC_ADVANCE_RIP_AND_FINISH(); \
                    IEM_MC_END(); \
                    break; \
                \
                case IEMMODE_32BIT: \
                    IEM_MC_BEGIN(IEM_MC_F_MIN_386, 0); \
                    IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX(); \
                    IEM_MC_ARG(uint32_t *,      pu32Dst,                    1); \
                    IEM_MC_REF_GREG_U32(pu32Dst, IEM_GET_MODRM_RM(pVCpu, bRm)); \
                    IEM_MC_ARG_EFLAGS(          fEFlagsIn,                  0); \
                    IEM_MC_ARG_CONST(uint8_t,   cShiftArg, /*=*/ cShift,    2); \
                    IEM_MC_CALL_AIMPL_3(uint32_t, fEFlagsRet, pImpl->pfnNormalU32, fEFlagsIn, pu32Dst, cShiftArg); \
                    IEM_MC_CLEAR_HIGH_GREG_U64(IEM_GET_MODRM_RM(pVCpu, bRm)); \
                    IEM_MC_COMMIT_EFLAGS(fEFlagsRet); \
                    IEM_MC_ADVANCE_RIP_AND_FINISH(); \
                    IEM_MC_END(); \
                    break; \
                \
                case IEMMODE_64BIT: \
                    IEM_MC_BEGIN(IEM_MC_F_64BIT, 0); \
                    IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX(); \
                    IEM_MC_ARG(uint64_t *,      pu64Dst,                    1); \
                    IEM_MC_REF_GREG_U64(pu64Dst, IEM_GET_MODRM_RM(pVCpu, bRm)); \
                    IEM_MC_ARG_EFLAGS(          fEFlagsIn,                  0); \
                    IEM_MC_ARG_CONST(uint8_t,   cShiftArg, /*=*/ cShift,    2); \
                    IEM_MC_CALL_AIMPL_3(uint32_t, fEFlagsRet, pImpl->pfnNormalU64, fEFlagsIn, pu64Dst, cShiftArg); \
                    IEM_MC_COMMIT_EFLAGS(fEFlagsRet); \
                    IEM_MC_ADVANCE_RIP_AND_FINISH(); \
                    IEM_MC_END(); \
                    break; \
                \
                IEM_NOT_REACHED_DEFAULT_CASE_RET(); \
            } \
        } \
        else \
        { \
            /* memory */ \
            switch (pVCpu->iem.s.enmEffOpSize) \
            { \
                case IEMMODE_16BIT: \
                    IEM_MC_BEGIN(0, 0); \
                    IEM_MC_LOCAL(RTGCPTR, GCPtrEffDst); \
                    IEM_MC_CALC_RM_EFF_ADDR(GCPtrEffDst, bRm, 1); \
                    \
                    uint8_t cShift; IEM_OPCODE_GET_NEXT_U8(&cShift); \
                    IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX(); \
                    \
                    IEM_MC_LOCAL(uint8_t,       bUnmapInfo); \
                    IEM_MC_ARG(uint16_t *,      pu16Dst,                    1); \
                    IEM_MC_MEM_MAP_U16_RW(pu16Dst, bUnmapInfo, pVCpu->iem.s.iEffSeg, GCPtrEffDst); \
                    \
                    IEM_MC_ARG_EFLAGS(          fEFlagsIn,                  0); \
                    IEM_MC_ARG_CONST(uint8_t,   cShiftArg, /*=*/ cShift,    2); \
                    IEM_MC_CALL_AIMPL_3(uint32_t, fEFlagsRet, pImpl->pfnNormalU16, fEFlagsIn, pu16Dst, cShiftArg); \
                    \
                    IEM_MC_MEM_COMMIT_AND_UNMAP_RW(bUnmapInfo); \
                    IEM_MC_COMMIT_EFLAGS(fEFlagsRet); \
                    IEM_MC_ADVANCE_RIP_AND_FINISH(); \
                    IEM_MC_END(); \
                    break; \
                \
                case IEMMODE_32BIT: \
                    IEM_MC_BEGIN(IEM_MC_F_MIN_386, 0); \
                    IEM_MC_LOCAL(RTGCPTR, GCPtrEffDst); \
                     IEM_MC_CALC_RM_EFF_ADDR(GCPtrEffDst, bRm, 1); \
                    \
                    uint8_t cShift; IEM_OPCODE_GET_NEXT_U8(&cShift); \
                    IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX(); \
                    \
                    IEM_MC_LOCAL(uint8_t,       bUnmapInfo); \
                    IEM_MC_ARG(uint32_t *,      pu32Dst,                    1); \
                    IEM_MC_MEM_MAP_U32_RW(pu32Dst, bUnmapInfo, pVCpu->iem.s.iEffSeg, GCPtrEffDst); \
                    \
                    IEM_MC_ARG_EFLAGS(          fEFlagsIn,                  0); \
                    IEM_MC_ARG_CONST(uint8_t,   cShiftArg, /*=*/ cShift,    2); \
                    IEM_MC_CALL_AIMPL_3(uint32_t, fEFlagsRet, pImpl->pfnNormalU32, fEFlagsIn, pu32Dst, cShiftArg); \
                    \
                    IEM_MC_MEM_COMMIT_AND_UNMAP_RW(bUnmapInfo); \
                    IEM_MC_COMMIT_EFLAGS(fEFlagsRet); \
                    IEM_MC_ADVANCE_RIP_AND_FINISH(); \
                    IEM_MC_END(); \
                    break; \
                \
                case IEMMODE_64BIT: \
                    IEM_MC_BEGIN(IEM_MC_F_64BIT, 0); \
                    IEM_MC_LOCAL(RTGCPTR, GCPtrEffDst); \
                    IEM_MC_CALC_RM_EFF_ADDR(GCPtrEffDst, bRm, 1); \
                    \
                    uint8_t cShift; IEM_OPCODE_GET_NEXT_U8(&cShift); \
                    IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX(); \
                    \
                    IEM_MC_LOCAL(uint8_t,       bUnmapInfo); \
                    IEM_MC_ARG(uint64_t *,      pu64Dst,                    1); \
                    IEM_MC_MEM_MAP_U64_RW(pu64Dst, bUnmapInfo, pVCpu->iem.s.iEffSeg, GCPtrEffDst); \
                    \
                    IEM_MC_ARG_EFLAGS(          fEFlagsIn,                  0); \
                    IEM_MC_ARG_CONST(uint8_t,   cShiftArg, /*=*/ cShift,    2); \
                    IEM_MC_CALL_AIMPL_3(uint32_t, fEFlagsRet, pImpl->pfnNormalU64, fEFlagsIn, pu64Dst, cShiftArg); \
                    \
                    IEM_MC_MEM_COMMIT_AND_UNMAP_RW(bUnmapInfo); \
                    IEM_MC_COMMIT_EFLAGS(fEFlagsRet); \
                    IEM_MC_ADVANCE_RIP_AND_FINISH(); \
                    IEM_MC_END(); \
                    break; \
                \
                IEM_NOT_REACHED_DEFAULT_CASE_RET(); \
            } \
        } (void)0

/**
 * @opmaps      grp2_c1
 * @opcode      /0
 * @opflclass   rotate_count
 */
FNIEMOP_DEF_1(iemOp_grp2_rol_Ev_Ib, uint8_t, bRm)
{
    IEMOP_MNEMONIC2(MI, ROL, rol, Ev, Ib, DISOPTYPE_HARMLESS, 0);
    GRP2_BODY_Ev_Ib(IEMTARGETCPU_EFL_BEHAVIOR_SELECT(g_iemAImpl_rol_eflags));
}


/**
 * @opmaps      grp2_c1
 * @opcode      /1
 * @opflclass   rotate_count
 */
FNIEMOP_DEF_1(iemOp_grp2_ror_Ev_Ib, uint8_t, bRm)
{
    IEMOP_MNEMONIC2(MI, ROR, ror, Ev, Ib, DISOPTYPE_HARMLESS, 0);
    GRP2_BODY_Ev_Ib(IEMTARGETCPU_EFL_BEHAVIOR_SELECT(g_iemAImpl_ror_eflags));
}


/**
 * @opmaps      grp2_c1
 * @opcode      /2
 * @opflclass   rotate_carry_count
 */
FNIEMOP_DEF_1(iemOp_grp2_rcl_Ev_Ib, uint8_t, bRm)
{
    IEMOP_MNEMONIC2(MI, RCL, rcl, Ev, Ib, DISOPTYPE_HARMLESS, 0);
    GRP2_BODY_Ev_Ib(IEMTARGETCPU_EFL_BEHAVIOR_SELECT(g_iemAImpl_rcl_eflags));
}


/**
 * @opmaps      grp2_c1
 * @opcode      /3
 * @opflclass   rotate_carry_count
 */
FNIEMOP_DEF_1(iemOp_grp2_rcr_Ev_Ib, uint8_t, bRm)
{
    IEMOP_MNEMONIC2(MI, RCR, rcr, Ev, Ib, DISOPTYPE_HARMLESS, 0);
    GRP2_BODY_Ev_Ib(IEMTARGETCPU_EFL_BEHAVIOR_SELECT(g_iemAImpl_rcr_eflags));
}


/**
 * @opmaps      grp2_c1
 * @opcode      /4
 * @opflclass   shift_count
 */
FNIEMOP_DEF_1(iemOp_grp2_shl_Ev_Ib, uint8_t, bRm)
{
    IEMOP_MNEMONIC2(MI, SHL, shl, Ev, Ib, DISOPTYPE_HARMLESS, 0);
    GRP2_BODY_Ev_Ib(IEMTARGETCPU_EFL_BEHAVIOR_SELECT(g_iemAImpl_shl_eflags));
}


/**
 * @opmaps      grp2_c1
 * @opcode      /5
 * @opflclass   shift_count
 */
FNIEMOP_DEF_1(iemOp_grp2_shr_Ev_Ib, uint8_t, bRm)
{
    IEMOP_MNEMONIC2(MI, SHR, shr, Ev, Ib, DISOPTYPE_HARMLESS, 0);
    GRP2_BODY_Ev_Ib(IEMTARGETCPU_EFL_BEHAVIOR_SELECT(g_iemAImpl_shr_eflags));
}


/**
 * @opmaps      grp2_c1
 * @opcode      /7
 * @opflclass   shift_count
 */
FNIEMOP_DEF_1(iemOp_grp2_sar_Ev_Ib, uint8_t, bRm)
{
    IEMOP_MNEMONIC2(MI, SAR, sar, Ev, Ib, DISOPTYPE_HARMLESS, 0);
    GRP2_BODY_Ev_Ib(IEMTARGETCPU_EFL_BEHAVIOR_SELECT(g_iemAImpl_sar_eflags));
}

#undef GRP2_BODY_Ev_Ib

/**
 * @opcode      0xc1
 */
FNIEMOP_DEF(iemOp_Grp2_Ev_Ib)
{
    IEMOP_HLP_MIN_186();
    uint8_t bRm; IEM_OPCODE_GET_NEXT_U8(&bRm);

    switch (IEM_GET_MODRM_REG_8(bRm))
    {
        case 0: return FNIEMOP_CALL_1(iemOp_grp2_rol_Ev_Ib, bRm);
        case 1: return FNIEMOP_CALL_1(iemOp_grp2_ror_Ev_Ib, bRm);
        case 2: return FNIEMOP_CALL_1(iemOp_grp2_rcl_Ev_Ib, bRm);
        case 3: return FNIEMOP_CALL_1(iemOp_grp2_rcr_Ev_Ib, bRm);
        case 4: return FNIEMOP_CALL_1(iemOp_grp2_shl_Ev_Ib, bRm);
        case 5: return FNIEMOP_CALL_1(iemOp_grp2_shr_Ev_Ib, bRm);
        case 7: return FNIEMOP_CALL_1(iemOp_grp2_sar_Ev_Ib, bRm);
        case 6: IEMOP_RAISE_INVALID_OPCODE_RET();
        IEM_NOT_REACHED_DEFAULT_CASE_RET(); /* gcc maybe stupid */
    }
}


/**
 * @opcode      0xc2
 */
FNIEMOP_DEF(iemOp_retn_Iw)
{
    IEMOP_MNEMONIC(retn_Iw, "retn Iw");
    uint16_t u16Imm; IEM_OPCODE_GET_NEXT_U16(&u16Imm);
    IEMOP_HLP_DEFAULT_64BIT_OP_SIZE_AND_INTEL_IGNORES_OP_SIZE_PREFIX();
    IEM_MC_BEGIN(0, 0);
    IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
    IEM_MC_RETN_AND_FINISH(u16Imm);
    IEM_MC_END();
}


/**
 * @opcode      0xc3
 */
FNIEMOP_DEF(iemOp_retn)
{
    IEMOP_MNEMONIC(retn, "retn");
    IEMOP_HLP_DEFAULT_64BIT_OP_SIZE_AND_INTEL_IGNORES_OP_SIZE_PREFIX();
    IEM_MC_BEGIN(0, 0);
    IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
    IEM_MC_RETN_AND_FINISH(0);
    IEM_MC_END();
}


/**
 * @opcode      0xc4
 */
FNIEMOP_DEF(iemOp_les_Gv_Mp__vex3)
{
    /* The LDS instruction is invalid 64-bit mode. In legacy and
       compatability mode it is invalid with MOD=3.
       The use as a VEX prefix is made possible by assigning the inverted
       REX.R and REX.X to the two MOD bits, since the REX bits are ignored
       outside of 64-bit mode.  VEX is not available in real or v86 mode. */
    uint8_t bRm; IEM_OPCODE_GET_NEXT_U8(&bRm);
    if (   IEM_IS_64BIT_CODE(pVCpu)
        || IEM_IS_MODRM_REG_MODE(bRm) )
    {
        IEMOP_MNEMONIC(vex3_prefix, "vex3");
        if (IEM_GET_GUEST_CPU_FEATURES(pVCpu)->fVex)
        {
            /* Note! The real mode, v8086 mode and invalid prefix checks are done once
                     the instruction is fully decoded.  Even when XCR0=3 and CR4.OSXSAVE=0. */
            uint8_t bVex2;   IEM_OPCODE_GET_NEXT_U8(&bVex2);
            uint8_t bOpcode; IEM_OPCODE_GET_NEXT_U8(&bOpcode);
            pVCpu->iem.s.fPrefixes |= IEM_OP_PRF_VEX;
#if 1
            AssertCompile(IEM_OP_PRF_SIZE_REX_W == RT_BIT_32(9));
            pVCpu->iem.s.fPrefixes |= (uint32_t)(bVex2 & 0x80) << (9 - 7);
#else
            if (bVex2 & 0x80 /* VEX.W */)
                pVCpu->iem.s.fPrefixes |= IEM_OP_PRF_SIZE_REX_W;
#endif
            if (IEM_IS_64BIT_CODE(pVCpu))
            {
#if 1
                AssertCompile(IEM_OP_PRF_REX_B == RT_BIT_32(25) && IEM_OP_PRF_REX_X == RT_BIT_32(26) && IEM_OP_PRF_REX_R == RT_BIT_32(27));
                pVCpu->iem.s.fPrefixes |= (uint32_t)(~bRm & 0xe0) << (25 - 5);
#else
                if (~bRm & 0x20 /* VEX.~B */)
                    pVCpu->iem.s.fPrefixes |= IEM_OP_PRF_SIZE_REX_B;
                if (~bRm & 0x40 /* VEX.~X */)
                    pVCpu->iem.s.fPrefixes |= IEM_OP_PRF_SIZE_REX_X;
                if (~bRm & 0x80 /* VEX.~R */)
                    pVCpu->iem.s.fPrefixes |= IEM_OP_PRF_SIZE_REX_R;
#endif
                pVCpu->iem.s.uRexReg    = (~bRm >> (7 - 3)) & 0x8;
                pVCpu->iem.s.uRexIndex  = (~bRm >> (6 - 3)) & 0x8;
                pVCpu->iem.s.uRexB      = (~bRm >> (5 - 3)) & 0x8;
                pVCpu->iem.s.uVex3rdReg = (~bVex2 >> 3) & 0xf;
            }
            else
            {
                pVCpu->iem.s.uRexReg    = 0;
                pVCpu->iem.s.uRexIndex  = 0;
                pVCpu->iem.s.uRexB      = 0;
                /** @todo testcase: Will attemps to access registers 8 thru 15 from 16&32 bit
                 * code raise \#UD or just be ignored?  We're ignoring for now... */
                pVCpu->iem.s.uVex3rdReg = (~bVex2 >> 3) & 0x7;
            }
            pVCpu->iem.s.uVexLength = (bVex2 >> 2) & 1;
            pVCpu->iem.s.idxPrefix  = bVex2 & 0x3;

            switch (bRm & 0x1f)
            {
                case 1: /* 0x0f lead opcode byte. */
#ifdef IEM_WITH_VEX
                    return FNIEMOP_CALL(g_apfnVexMap1[(uintptr_t)bOpcode * 4 + pVCpu->iem.s.idxPrefix]);
#else
                    IEMOP_BITCH_ABOUT_STUB();
                    return VERR_IEM_INSTR_NOT_IMPLEMENTED;
#endif

                case 2: /* 0x0f 0x38 lead opcode bytes. */
#ifdef IEM_WITH_VEX
                    return FNIEMOP_CALL(g_apfnVexMap2[(uintptr_t)bOpcode * 4 + pVCpu->iem.s.idxPrefix]);
#else
                    IEMOP_BITCH_ABOUT_STUB();
                    return VERR_IEM_INSTR_NOT_IMPLEMENTED;
#endif

                case 3: /* 0x0f 0x3a lead opcode bytes. */
#ifdef IEM_WITH_VEX
                    return FNIEMOP_CALL(g_apfnVexMap3[(uintptr_t)bOpcode * 4 + pVCpu->iem.s.idxPrefix]);
#else
                    IEMOP_BITCH_ABOUT_STUB();
                    return VERR_IEM_INSTR_NOT_IMPLEMENTED;
#endif

                default:
                    Log(("VEX3: Invalid vvvv value: %#x!\n", bRm & 0x1f));
                    IEMOP_RAISE_INVALID_OPCODE_RET();
            }
        }
        Log(("VEX3: VEX support disabled!\n"));
        IEMOP_RAISE_INVALID_OPCODE_RET();
    }

    IEMOP_MNEMONIC(les_Gv_Mp, "les Gv,Mp");
    return FNIEMOP_CALL_2(iemOpCommonLoadSRegAndGreg, X86_SREG_ES, bRm);
}


/**
 * @opcode      0xc5
 */
FNIEMOP_DEF(iemOp_lds_Gv_Mp__vex2)
{
    /* The LES instruction is invalid 64-bit mode. In legacy and
       compatability mode it is invalid with MOD=3.
       The use as a VEX prefix is made possible by assigning the inverted
       REX.R to the top MOD bit, and the top bit in the inverted register
       specifier to the bottom MOD bit, thereby effectively limiting 32-bit
       to accessing registers 0..7 in this VEX form. */
    uint8_t bRm; IEM_OPCODE_GET_NEXT_U8(&bRm);
    if (   IEM_IS_64BIT_CODE(pVCpu)
        || IEM_IS_MODRM_REG_MODE(bRm))
    {
        IEMOP_MNEMONIC(vex2_prefix, "vex2");
        if (IEM_GET_GUEST_CPU_FEATURES(pVCpu)->fVex)
        {
            /* Note! The real mode, v8086 mode and invalid prefix checks are done once
                     the instruction is fully decoded.  Even when XCR0=3 and CR4.OSXSAVE=0. */
            uint8_t bOpcode; IEM_OPCODE_GET_NEXT_U8(&bOpcode);
            pVCpu->iem.s.fPrefixes |= IEM_OP_PRF_VEX;
            AssertCompile(IEM_OP_PRF_REX_R == RT_BIT_32(27));
            pVCpu->iem.s.fPrefixes |= (uint32_t)(~bRm & 0x80) << (27 - 7);
            pVCpu->iem.s.uRexReg    = (~bRm >> (7 - 3)) & 0x8;
            pVCpu->iem.s.uVex3rdReg = (~bRm >> 3) & 0xf;
            pVCpu->iem.s.uVexLength = (bRm >> 2) & 1;
            pVCpu->iem.s.idxPrefix  = bRm & 0x3;

#ifdef IEM_WITH_VEX
            return FNIEMOP_CALL(g_apfnVexMap1[(uintptr_t)bOpcode * 4 + pVCpu->iem.s.idxPrefix]);
#else
            IEMOP_BITCH_ABOUT_STUB();
            return VERR_IEM_INSTR_NOT_IMPLEMENTED;
#endif
        }

        /** @todo does intel completely decode the sequence with SIB/disp before \#UD? */
        Log(("VEX2: VEX support disabled!\n"));
        IEMOP_RAISE_INVALID_OPCODE_RET();
    }

    IEMOP_MNEMONIC(lds_Gv_Mp, "lds Gv,Mp");
    return FNIEMOP_CALL_2(iemOpCommonLoadSRegAndGreg, X86_SREG_DS, bRm);
}


/**
 * @opcode      0xc6
 */
FNIEMOP_DEF(iemOp_Grp11_Eb_Ib)
{
    uint8_t bRm; IEM_OPCODE_GET_NEXT_U8(&bRm);
    if ((bRm & X86_MODRM_REG_MASK) != (0 << X86_MODRM_REG_SHIFT)) /* only mov Eb,Ib in this group. */
        IEMOP_RAISE_INVALID_OPCODE_RET();
    IEMOP_MNEMONIC(mov_Eb_Ib, "mov Eb,Ib");

    if (IEM_IS_MODRM_REG_MODE(bRm))
    {
        /* register access */
        uint8_t u8Imm; IEM_OPCODE_GET_NEXT_U8(&u8Imm);
        IEM_MC_BEGIN(0, 0);
        IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
        IEM_MC_STORE_GREG_U8_CONST(IEM_GET_MODRM_RM(pVCpu, bRm), u8Imm);
        IEM_MC_ADVANCE_RIP_AND_FINISH();
        IEM_MC_END();
    }
    else
    {
        /* memory access. */
        IEM_MC_BEGIN(0, 0);
        IEM_MC_LOCAL(RTGCPTR, GCPtrEffDst);
        IEM_MC_CALC_RM_EFF_ADDR(GCPtrEffDst, bRm, 1);
        uint8_t u8Imm; IEM_OPCODE_GET_NEXT_U8(&u8Imm);
        IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
        IEM_MC_STORE_MEM_U8_CONST(pVCpu->iem.s.iEffSeg, GCPtrEffDst, u8Imm);
        IEM_MC_ADVANCE_RIP_AND_FINISH();
        IEM_MC_END();
    }
}


/**
 * @opcode      0xc7
 */
FNIEMOP_DEF(iemOp_Grp11_Ev_Iz)
{
    uint8_t bRm; IEM_OPCODE_GET_NEXT_U8(&bRm);
    if ((bRm & X86_MODRM_REG_MASK) != (0 << X86_MODRM_REG_SHIFT)) /* only mov Eb,Iz in this group. */
        IEMOP_RAISE_INVALID_OPCODE_RET();
    IEMOP_MNEMONIC(mov_Ev_Iz, "mov Ev,Iz");

    if (IEM_IS_MODRM_REG_MODE(bRm))
    {
        /* register access */
        switch (pVCpu->iem.s.enmEffOpSize)
        {
            case IEMMODE_16BIT:
                IEM_MC_BEGIN(0, 0);
                uint16_t u16Imm; IEM_OPCODE_GET_NEXT_U16(&u16Imm);
                IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
                IEM_MC_STORE_GREG_U16_CONST(IEM_GET_MODRM_RM(pVCpu, bRm), u16Imm);
                IEM_MC_ADVANCE_RIP_AND_FINISH();
                IEM_MC_END();
                break;

            case IEMMODE_32BIT:
                IEM_MC_BEGIN(IEM_MC_F_MIN_386, 0);
                uint32_t u32Imm; IEM_OPCODE_GET_NEXT_U32(&u32Imm);
                IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
                IEM_MC_STORE_GREG_U32_CONST(IEM_GET_MODRM_RM(pVCpu, bRm), u32Imm);
                IEM_MC_ADVANCE_RIP_AND_FINISH();
                IEM_MC_END();
                break;

            case IEMMODE_64BIT:
                IEM_MC_BEGIN(IEM_MC_F_64BIT, 0);
                uint64_t u64Imm; IEM_OPCODE_GET_NEXT_S32_SX_U64(&u64Imm);
                IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
                IEM_MC_STORE_GREG_U64_CONST(IEM_GET_MODRM_RM(pVCpu, bRm), u64Imm);
                IEM_MC_ADVANCE_RIP_AND_FINISH();
                IEM_MC_END();
                break;

            IEM_NOT_REACHED_DEFAULT_CASE_RET();
        }
    }
    else
    {
        /* memory access. */
        switch (pVCpu->iem.s.enmEffOpSize)
        {
            case IEMMODE_16BIT:
                IEM_MC_BEGIN(0, 0);
                IEM_MC_LOCAL(RTGCPTR, GCPtrEffDst);
                IEM_MC_CALC_RM_EFF_ADDR(GCPtrEffDst, bRm, 2);
                uint16_t u16Imm; IEM_OPCODE_GET_NEXT_U16(&u16Imm);
                IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
                IEM_MC_STORE_MEM_U16_CONST(pVCpu->iem.s.iEffSeg, GCPtrEffDst, u16Imm);
                IEM_MC_ADVANCE_RIP_AND_FINISH();
                IEM_MC_END();
                break;

            case IEMMODE_32BIT:
                IEM_MC_BEGIN(IEM_MC_F_MIN_386, 0);
                IEM_MC_LOCAL(RTGCPTR, GCPtrEffDst);
                IEM_MC_CALC_RM_EFF_ADDR(GCPtrEffDst, bRm, 4);
                uint32_t u32Imm; IEM_OPCODE_GET_NEXT_U32(&u32Imm);
                IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
                IEM_MC_STORE_MEM_U32_CONST(pVCpu->iem.s.iEffSeg, GCPtrEffDst, u32Imm);
                IEM_MC_ADVANCE_RIP_AND_FINISH();
                IEM_MC_END();
                break;

            case IEMMODE_64BIT:
                IEM_MC_BEGIN(IEM_MC_F_64BIT, 0);
                IEM_MC_LOCAL(RTGCPTR, GCPtrEffDst);
                IEM_MC_CALC_RM_EFF_ADDR(GCPtrEffDst, bRm, 4);
                uint64_t u64Imm; IEM_OPCODE_GET_NEXT_S32_SX_U64(&u64Imm);
                IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
                IEM_MC_STORE_MEM_U64_CONST(pVCpu->iem.s.iEffSeg, GCPtrEffDst, u64Imm);
                IEM_MC_ADVANCE_RIP_AND_FINISH();
                IEM_MC_END();
                break;

            IEM_NOT_REACHED_DEFAULT_CASE_RET();
        }
    }
}




/**
 * @opcode      0xc8
 */
FNIEMOP_DEF(iemOp_enter_Iw_Ib)
{
    IEMOP_MNEMONIC(enter_Iw_Ib, "enter Iw,Ib");
    IEMOP_HLP_MIN_186();
    IEMOP_HLP_DEFAULT_64BIT_OP_SIZE();
    uint16_t cbFrame;        IEM_OPCODE_GET_NEXT_U16(&cbFrame);
    uint8_t  u8NestingLevel; IEM_OPCODE_GET_NEXT_U8(&u8NestingLevel);
    IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
    IEM_MC_DEFER_TO_CIMPL_3_RET(0,
                                  RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xSP)
                                | RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xBP),
                                iemCImpl_enter, pVCpu->iem.s.enmEffOpSize, cbFrame, u8NestingLevel);
}


/**
 * @opcode      0xc9
 */
FNIEMOP_DEF(iemOp_leave)
{
    IEMOP_MNEMONIC(leave, "leave");
    IEMOP_HLP_MIN_186();
    IEMOP_HLP_DEFAULT_64BIT_OP_SIZE();
    IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
    IEM_MC_DEFER_TO_CIMPL_1_RET(0,
                                  RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xSP)
                                | RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xBP),
                                iemCImpl_leave, pVCpu->iem.s.enmEffOpSize);
}


/**
 * @opcode      0xca
 */
FNIEMOP_DEF(iemOp_retf_Iw)
{
    IEMOP_MNEMONIC(retf_Iw, "retf Iw");
    uint16_t u16Imm; IEM_OPCODE_GET_NEXT_U16(&u16Imm);
    IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
    IEM_MC_DEFER_TO_CIMPL_2_RET(IEM_CIMPL_F_BRANCH_INDIRECT | IEM_CIMPL_F_BRANCH_FAR | IEM_CIMPL_F_BRANCH_STACK
                                | IEM_CIMPL_F_MODE,
                                  RT_BIT_64(kIemNativeGstReg_GprFirst       + X86_GREG_xSP)
                                | RT_BIT_64(kIemNativeGstReg_SegSelFirst    + X86_SREG_DS)
                                | RT_BIT_64(kIemNativeGstReg_SegSelFirst    + X86_SREG_ES)
                                | RT_BIT_64(kIemNativeGstReg_SegSelFirst    + X86_SREG_FS)
                                | RT_BIT_64(kIemNativeGstReg_SegSelFirst    + X86_SREG_GS)
                                | RT_BIT_64(kIemNativeGstReg_SegBaseFirst   + X86_SREG_DS)
                                | RT_BIT_64(kIemNativeGstReg_SegBaseFirst   + X86_SREG_ES)
                                | RT_BIT_64(kIemNativeGstReg_SegBaseFirst   + X86_SREG_FS)
                                | RT_BIT_64(kIemNativeGstReg_SegBaseFirst   + X86_SREG_GS)
                                | RT_BIT_64(kIemNativeGstReg_SegLimitFirst  + X86_SREG_DS)
                                | RT_BIT_64(kIemNativeGstReg_SegLimitFirst  + X86_SREG_ES)
                                | RT_BIT_64(kIemNativeGstReg_SegLimitFirst  + X86_SREG_FS)
                                | RT_BIT_64(kIemNativeGstReg_SegLimitFirst  + X86_SREG_GS)
                                | RT_BIT_64(kIemNativeGstReg_SegAttribFirst + X86_SREG_DS)
                                | RT_BIT_64(kIemNativeGstReg_SegAttribFirst + X86_SREG_ES)
                                | RT_BIT_64(kIemNativeGstReg_SegAttribFirst + X86_SREG_FS)
                                | RT_BIT_64(kIemNativeGstReg_SegAttribFirst + X86_SREG_GS),
                                iemCImpl_retf, pVCpu->iem.s.enmEffOpSize, u16Imm);
}


/**
 * @opcode      0xcb
 */
FNIEMOP_DEF(iemOp_retf)
{
    IEMOP_MNEMONIC(retf, "retf");
    IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
    IEM_MC_DEFER_TO_CIMPL_2_RET(IEM_CIMPL_F_BRANCH_INDIRECT | IEM_CIMPL_F_BRANCH_FAR | IEM_CIMPL_F_BRANCH_STACK
                                | IEM_CIMPL_F_MODE,
                                  RT_BIT_64(kIemNativeGstReg_GprFirst       + X86_GREG_xSP)
                                | RT_BIT_64(kIemNativeGstReg_SegSelFirst    + X86_SREG_DS)
                                | RT_BIT_64(kIemNativeGstReg_SegSelFirst    + X86_SREG_ES)
                                | RT_BIT_64(kIemNativeGstReg_SegSelFirst    + X86_SREG_FS)
                                | RT_BIT_64(kIemNativeGstReg_SegSelFirst    + X86_SREG_GS)
                                | RT_BIT_64(kIemNativeGstReg_SegBaseFirst   + X86_SREG_DS)
                                | RT_BIT_64(kIemNativeGstReg_SegBaseFirst   + X86_SREG_ES)
                                | RT_BIT_64(kIemNativeGstReg_SegBaseFirst   + X86_SREG_FS)
                                | RT_BIT_64(kIemNativeGstReg_SegBaseFirst   + X86_SREG_GS)
                                | RT_BIT_64(kIemNativeGstReg_SegLimitFirst  + X86_SREG_DS)
                                | RT_BIT_64(kIemNativeGstReg_SegLimitFirst  + X86_SREG_ES)
                                | RT_BIT_64(kIemNativeGstReg_SegLimitFirst  + X86_SREG_FS)
                                | RT_BIT_64(kIemNativeGstReg_SegLimitFirst  + X86_SREG_GS)
                                | RT_BIT_64(kIemNativeGstReg_SegAttribFirst + X86_SREG_DS)
                                | RT_BIT_64(kIemNativeGstReg_SegAttribFirst + X86_SREG_ES)
                                | RT_BIT_64(kIemNativeGstReg_SegAttribFirst + X86_SREG_FS)
                                | RT_BIT_64(kIemNativeGstReg_SegAttribFirst + X86_SREG_GS),
                                iemCImpl_retf, pVCpu->iem.s.enmEffOpSize, 0);
}


/**
 * @opcode      0xcc
 */
FNIEMOP_DEF(iemOp_int3)
{
    IEMOP_MNEMONIC(int3, "int3");
    IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
    IEM_MC_DEFER_TO_CIMPL_2_RET(IEM_CIMPL_F_BRANCH_INDIRECT | IEM_CIMPL_F_BRANCH_FAR | IEM_CIMPL_F_BRANCH_STACK_FAR
                                | IEM_CIMPL_F_MODE | IEM_CIMPL_F_VMEXIT | IEM_CIMPL_F_RFLAGS | IEM_CIMPL_F_END_TB, 0,
                                iemCImpl_int, X86_XCPT_BP, IEMINT_INT3);
}


/**
 * @opcode      0xcd
 */
FNIEMOP_DEF(iemOp_int_Ib)
{
    IEMOP_MNEMONIC(int_Ib, "int Ib");
    uint8_t u8Int; IEM_OPCODE_GET_NEXT_U8(&u8Int);
    IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
    IEM_MC_DEFER_TO_CIMPL_2_RET(IEM_CIMPL_F_BRANCH_INDIRECT | IEM_CIMPL_F_BRANCH_FAR | IEM_CIMPL_F_BRANCH_STACK_FAR
                                | IEM_CIMPL_F_MODE | IEM_CIMPL_F_VMEXIT | IEM_CIMPL_F_RFLAGS, UINT64_MAX,
                                iemCImpl_int, u8Int, IEMINT_INTN);
    /** @todo make task-switches, ring-switches, ++ return non-zero status */
}


/**
 * @opcode      0xce
 */
FNIEMOP_DEF(iemOp_into)
{
    IEMOP_MNEMONIC(into, "into");
    IEMOP_HLP_NO_64BIT();
    IEM_MC_DEFER_TO_CIMPL_2_RET(IEM_CIMPL_F_BRANCH_INDIRECT | IEM_CIMPL_F_BRANCH_FAR | IEM_CIMPL_F_BRANCH_STACK_FAR
                                | IEM_CIMPL_F_BRANCH_CONDITIONAL | IEM_CIMPL_F_MODE | IEM_CIMPL_F_VMEXIT | IEM_CIMPL_F_RFLAGS,
                                UINT64_MAX,
                                iemCImpl_int, X86_XCPT_OF, IEMINT_INTO);
    /** @todo make task-switches, ring-switches, ++ return non-zero status */
}


/**
 * @opcode      0xcf
 */
FNIEMOP_DEF(iemOp_iret)
{
    IEMOP_MNEMONIC(iret, "iret");
    IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
    IEM_MC_DEFER_TO_CIMPL_1_RET(IEM_CIMPL_F_BRANCH_INDIRECT | IEM_CIMPL_F_BRANCH_FAR | IEM_CIMPL_F_BRANCH_STACK_FAR
                                | IEM_CIMPL_F_MODE | IEM_CIMPL_F_RFLAGS | IEM_CIMPL_F_CHECK_IRQ_BEFORE | IEM_CIMPL_F_VMEXIT,
                                  RT_BIT_64(kIemNativeGstReg_GprFirst       + X86_GREG_xSP)
                                | RT_BIT_64(kIemNativeGstReg_SegSelFirst    + X86_SREG_DS)
                                | RT_BIT_64(kIemNativeGstReg_SegBaseFirst   + X86_SREG_DS)
                                | RT_BIT_64(kIemNativeGstReg_SegLimitFirst  + X86_SREG_DS)
                                | RT_BIT_64(kIemNativeGstReg_SegAttribFirst + X86_SREG_DS)
                                | RT_BIT_64(kIemNativeGstReg_SegSelFirst    + X86_SREG_ES)
                                | RT_BIT_64(kIemNativeGstReg_SegBaseFirst   + X86_SREG_ES)
                                | RT_BIT_64(kIemNativeGstReg_SegLimitFirst  + X86_SREG_ES)
                                | RT_BIT_64(kIemNativeGstReg_SegAttribFirst + X86_SREG_ES)
                                | RT_BIT_64(kIemNativeGstReg_SegSelFirst    + X86_SREG_FS)
                                | RT_BIT_64(kIemNativeGstReg_SegBaseFirst   + X86_SREG_FS)
                                | RT_BIT_64(kIemNativeGstReg_SegLimitFirst  + X86_SREG_FS)
                                | RT_BIT_64(kIemNativeGstReg_SegAttribFirst + X86_SREG_FS)
                                | RT_BIT_64(kIemNativeGstReg_SegSelFirst    + X86_SREG_GS)
                                | RT_BIT_64(kIemNativeGstReg_SegBaseFirst   + X86_SREG_GS)
                                | RT_BIT_64(kIemNativeGstReg_SegLimitFirst  + X86_SREG_GS)
                                | RT_BIT_64(kIemNativeGstReg_SegAttribFirst + X86_SREG_GS),
                                iemCImpl_iret, pVCpu->iem.s.enmEffOpSize);
    /* Segment registers are sanitized when returning to an outer ring, or fully
       reloaded when returning  to v86 mode.  Thus the large flush list above. */
}


/**
 * @opcode      0xd0
 */
FNIEMOP_DEF(iemOp_Grp2_Eb_1)
{
    uint8_t bRm; IEM_OPCODE_GET_NEXT_U8(&bRm);

    /* Need to use a body macro here since the EFLAGS behaviour differs between
       the shifts, rotates and rotate w/ carry. Sigh. */
#define GRP2_BODY_Eb_1(a_pImplExpr) \
        PCIEMOPSHIFTSIZES const pImpl = (a_pImplExpr); \
        if (IEM_IS_MODRM_REG_MODE(bRm)) \
        { \
            /* register */ \
            IEM_MC_BEGIN(0, 0); \
            IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX(); \
            IEM_MC_ARG(uint8_t *,       pu8Dst,             1); \
            IEM_MC_REF_GREG_U8(pu8Dst, IEM_GET_MODRM_RM(pVCpu, bRm)); \
            IEM_MC_ARG_EFLAGS(          fEFlagsIn,          0); \
            IEM_MC_ARG_CONST(uint8_t,   cShiftArg,/*=*/1,   2); \
            IEM_MC_CALL_AIMPL_3(uint32_t, fEFlagsRet, pImpl->pfnNormalU8, fEFlagsIn, pu8Dst, cShiftArg); \
            IEM_MC_COMMIT_EFLAGS(fEFlagsRet); \
            IEM_MC_ADVANCE_RIP_AND_FINISH(); \
            IEM_MC_END(); \
        } \
        else \
        { \
            /* memory */ \
            IEM_MC_BEGIN(0, 0); \
            IEM_MC_LOCAL(RTGCPTR,       GCPtrEffDst); \
            IEM_MC_CALC_RM_EFF_ADDR(GCPtrEffDst, bRm, 0); \
            IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX(); \
            \
            IEM_MC_LOCAL(uint8_t,       bUnmapInfo); \
            IEM_MC_ARG(uint8_t *,       pu8Dst,             1); \
            IEM_MC_MEM_MAP_U8_RW(pu8Dst, bUnmapInfo, pVCpu->iem.s.iEffSeg, GCPtrEffDst); \
            \
            IEM_MC_ARG_EFLAGS(          fEFlagsIn,          0); \
            IEM_MC_ARG_CONST(uint8_t,   cShiftArg,/*=*/1,   2); \
            IEM_MC_CALL_AIMPL_3(uint32_t, fEFlagsRet, pImpl->pfnNormalU8, fEFlagsIn, pu8Dst, cShiftArg); \
            \
            IEM_MC_MEM_COMMIT_AND_UNMAP_RW(bUnmapInfo); \
            IEM_MC_COMMIT_EFLAGS(fEFlagsRet); \
            IEM_MC_ADVANCE_RIP_AND_FINISH(); \
            IEM_MC_END(); \
        } (void)0

    switch (IEM_GET_MODRM_REG_8(bRm))
    {
        /**
         * @opdone
         * @opmaps      grp2_d0
         * @opcode      /0
         * @opflclass   rotate_1
         */
        case 0:
        {
            IEMOP_MNEMONIC2(M1, ROL, rol, Eb, 1, DISOPTYPE_HARMLESS, 0);
            GRP2_BODY_Eb_1(IEMTARGETCPU_EFL_BEHAVIOR_SELECT(g_iemAImpl_rol_eflags));
            break;
        }
        /**
         * @opdone
         * @opmaps      grp2_d0
         * @opcode      /1
         * @opflclass   rotate_1
         */
        case 1:
        {
            IEMOP_MNEMONIC2(M1, ROR, ror, Eb, 1, DISOPTYPE_HARMLESS, 0);
            GRP2_BODY_Eb_1(IEMTARGETCPU_EFL_BEHAVIOR_SELECT(g_iemAImpl_ror_eflags));
            break;
        }
        /**
         * @opdone
         * @opmaps      grp2_d0
         * @opcode      /2
         * @opflclass   rotate_carry_1
         */
        case 2:
        {
            IEMOP_MNEMONIC2(M1, RCL, rcl, Eb, 1, DISOPTYPE_HARMLESS, 0);
            GRP2_BODY_Eb_1(IEMTARGETCPU_EFL_BEHAVIOR_SELECT(g_iemAImpl_rcl_eflags));
            break;
        }
        /**
         * @opdone
         * @opmaps      grp2_d0
         * @opcode      /3
         * @opflclass   rotate_carry_1
         */
        case 3:
        {
            IEMOP_MNEMONIC2(M1, RCR, rcr, Eb, 1, DISOPTYPE_HARMLESS, 0);
            GRP2_BODY_Eb_1(IEMTARGETCPU_EFL_BEHAVIOR_SELECT(g_iemAImpl_rcr_eflags));
            break;
        }
        /**
         * @opdone
         * @opmaps      grp2_d0
         * @opcode      /4
         * @opflclass   shift_1
         */
        case 4:
        {
            IEMOP_MNEMONIC2(M1, SHL, shl, Eb, 1, DISOPTYPE_HARMLESS, 0);
            GRP2_BODY_Eb_1(IEMTARGETCPU_EFL_BEHAVIOR_SELECT(g_iemAImpl_shl_eflags));
            break;
        }
        /**
         * @opdone
         * @opmaps      grp2_d0
         * @opcode      /5
         * @opflclass   shift_1
         */
        case 5:
        {
            IEMOP_MNEMONIC2(M1, SHR, shr, Eb, 1, DISOPTYPE_HARMLESS, 0);
            GRP2_BODY_Eb_1(IEMTARGETCPU_EFL_BEHAVIOR_SELECT(g_iemAImpl_shr_eflags));
            break;
        }
        /**
         * @opdone
         * @opmaps      grp2_d0
         * @opcode      /7
         * @opflclass   shift_1
         */
        case 7:
        {
            IEMOP_MNEMONIC2(M1, SAR, sar, Eb, 1, DISOPTYPE_HARMLESS, 0);
            GRP2_BODY_Eb_1(IEMTARGETCPU_EFL_BEHAVIOR_SELECT(g_iemAImpl_sar_eflags));
            break;
        }
        /** @opdone */
        case 6: IEMOP_RAISE_INVALID_OPCODE_RET();
        IEM_NOT_REACHED_DEFAULT_CASE_RET(); /* gcc maybe, well... */
    }
#undef GRP2_BODY_Eb_1
}


/* Need to use a body macro here since the EFLAGS behaviour differs between
   the shifts, rotates and rotate w/ carry. Sigh. */
#define GRP2_BODY_Ev_1(a_pImplExpr) \
        PCIEMOPSHIFTSIZES const pImpl = (a_pImplExpr); \
        if (IEM_IS_MODRM_REG_MODE(bRm)) \
        { \
            /* register */ \
            switch (pVCpu->iem.s.enmEffOpSize) \
            { \
                case IEMMODE_16BIT: \
                    IEM_MC_BEGIN(0, 0); \
                    IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX(); \
                    IEM_MC_ARG(uint16_t *,      pu16Dst,           1); \
                    IEM_MC_REF_GREG_U16(pu16Dst, IEM_GET_MODRM_RM(pVCpu, bRm)); \
                    IEM_MC_ARG_EFLAGS(          fEFlagsIn,         0); \
                    IEM_MC_ARG_CONST(uint8_t,   cShiftArg,/*=*/ 1, 2); \
                    IEM_MC_CALL_AIMPL_3(uint32_t, fEFlagsRet, pImpl->pfnNormalU16, fEFlagsIn, pu16Dst, cShiftArg); \
                    IEM_MC_COMMIT_EFLAGS(fEFlagsRet); \
                    IEM_MC_ADVANCE_RIP_AND_FINISH(); \
                    IEM_MC_END(); \
                    break; \
                \
                case IEMMODE_32BIT: \
                    IEM_MC_BEGIN(IEM_MC_F_MIN_386, 0); \
                    IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX(); \
                    IEM_MC_ARG(uint32_t *,      pu32Dst,           1); \
                    IEM_MC_REF_GREG_U32(pu32Dst, IEM_GET_MODRM_RM(pVCpu, bRm)); \
                    IEM_MC_ARG_EFLAGS(          fEFlagsIn,         0); \
                    IEM_MC_ARG_CONST(uint8_t,   cShiftArg,/*=*/ 1, 2); \
                    IEM_MC_CALL_AIMPL_3(uint32_t, fEFlagsRet, pImpl->pfnNormalU32, fEFlagsIn, pu32Dst, cShiftArg); \
                    IEM_MC_CLEAR_HIGH_GREG_U64(IEM_GET_MODRM_RM(pVCpu, bRm)); \
                    IEM_MC_COMMIT_EFLAGS(fEFlagsRet); \
                    IEM_MC_ADVANCE_RIP_AND_FINISH(); \
                    IEM_MC_END(); \
                    break; \
                \
                case IEMMODE_64BIT: \
                    IEM_MC_BEGIN(IEM_MC_F_64BIT, 0); \
                    IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX(); \
                    IEM_MC_ARG(uint64_t *,      pu64Dst,           1); \
                    IEM_MC_REF_GREG_U64(pu64Dst, IEM_GET_MODRM_RM(pVCpu, bRm)); \
                    IEM_MC_ARG_EFLAGS(          fEFlagsIn,         0); \
                    IEM_MC_ARG_CONST(uint8_t,   cShiftArg,/*=*/ 1, 2); \
                    IEM_MC_CALL_AIMPL_3(uint32_t, fEFlagsRet, pImpl->pfnNormalU64, fEFlagsIn, pu64Dst, cShiftArg); \
                    IEM_MC_COMMIT_EFLAGS(fEFlagsRet); \
                    IEM_MC_ADVANCE_RIP_AND_FINISH(); \
                    IEM_MC_END(); \
                    break; \
                \
                IEM_NOT_REACHED_DEFAULT_CASE_RET(); \
            } \
        } \
        else \
        { \
            /* memory */ \
            switch (pVCpu->iem.s.enmEffOpSize) \
            { \
                case IEMMODE_16BIT: \
                    IEM_MC_BEGIN(0, 0); \
                    IEM_MC_LOCAL(RTGCPTR,       GCPtrEffDst); \
                    IEM_MC_CALC_RM_EFF_ADDR(GCPtrEffDst, bRm, 0); \
                    IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX(); \
                    \
                    IEM_MC_ARG(uint16_t *,      pu16Dst,            1); \
                    IEM_MC_LOCAL(uint8_t,       bUnmapInfo); \
                    IEM_MC_MEM_MAP_U16_RW(pu16Dst, bUnmapInfo, pVCpu->iem.s.iEffSeg, GCPtrEffDst); \
                    \
                    IEM_MC_ARG_EFLAGS(          fEFlagsIn,          0); \
                    IEM_MC_ARG_CONST(uint8_t,   cShiftArg,/*=*/ 1,  2); \
                    IEM_MC_CALL_AIMPL_3(uint32_t, fEFlagsRet, pImpl->pfnNormalU16, fEFlagsIn, pu16Dst, cShiftArg); \
                    \
                    IEM_MC_MEM_COMMIT_AND_UNMAP_RW(bUnmapInfo); \
                    IEM_MC_COMMIT_EFLAGS(fEFlagsRet); \
                    IEM_MC_ADVANCE_RIP_AND_FINISH(); \
                    IEM_MC_END(); \
                    break; \
                \
                case IEMMODE_32BIT: \
                    IEM_MC_BEGIN(IEM_MC_F_MIN_386, 0); \
                    IEM_MC_LOCAL(RTGCPTR,       GCPtrEffDst); \
                    IEM_MC_CALC_RM_EFF_ADDR(GCPtrEffDst, bRm, 0); \
                    IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX(); \
                    \
                    IEM_MC_LOCAL(uint8_t,       bUnmapInfo); \
                    IEM_MC_ARG(uint32_t *,      pu32Dst,            1); \
                    IEM_MC_MEM_MAP_U32_RW(pu32Dst, bUnmapInfo, pVCpu->iem.s.iEffSeg, GCPtrEffDst); \
                    \
                    IEM_MC_ARG_EFLAGS(          fEFlagsIn,          0); \
                    IEM_MC_ARG_CONST(uint8_t,   cShiftArg,/*=*/ 1,  2); \
                    IEM_MC_CALL_AIMPL_3(uint32_t, fEFlagsRet, pImpl->pfnNormalU32, fEFlagsIn, pu32Dst, cShiftArg); \
                    \
                    IEM_MC_MEM_COMMIT_AND_UNMAP_RW(bUnmapInfo); \
                    IEM_MC_COMMIT_EFLAGS(fEFlagsRet); \
                    IEM_MC_ADVANCE_RIP_AND_FINISH(); \
                    IEM_MC_END(); \
                    break; \
                \
                case IEMMODE_64BIT: \
                    IEM_MC_BEGIN(IEM_MC_F_64BIT, 0); \
                    IEM_MC_LOCAL(RTGCPTR,       GCPtrEffDst); \
                    IEM_MC_CALC_RM_EFF_ADDR(GCPtrEffDst, bRm, 0); \
                    IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX(); \
                    \
                    IEM_MC_LOCAL(uint8_t,       bUnmapInfo); \
                    IEM_MC_ARG(uint64_t *,      pu64Dst,            1); \
                    IEM_MC_MEM_MAP_U64_RW(pu64Dst, bUnmapInfo, pVCpu->iem.s.iEffSeg, GCPtrEffDst); \
                    \
                    IEM_MC_ARG_EFLAGS(          fEFlagsIn,          0); \
                    IEM_MC_ARG_CONST(uint8_t,   cShiftArg,/*=*/ 1,  2); \
                    IEM_MC_CALL_AIMPL_3(uint32_t, fEFlagsRet, pImpl->pfnNormalU64, fEFlagsIn, pu64Dst, cShiftArg); \
                    \
                    IEM_MC_MEM_COMMIT_AND_UNMAP_RW(bUnmapInfo); \
                    IEM_MC_COMMIT_EFLAGS(fEFlagsRet); \
                    IEM_MC_ADVANCE_RIP_AND_FINISH(); \
                    IEM_MC_END(); \
                    break; \
                \
                IEM_NOT_REACHED_DEFAULT_CASE_RET(); \
            } \
        } (void)0

/**
 * @opmaps      grp2_d1
 * @opcode      /0
 * @opflclass   rotate_1
 */
FNIEMOP_DEF_1(iemOp_grp2_rol_Ev_1, uint8_t, bRm)
{
    IEMOP_MNEMONIC2(M1, ROL, rol, Ev, 1, DISOPTYPE_HARMLESS, 0);
    GRP2_BODY_Ev_1(IEMTARGETCPU_EFL_BEHAVIOR_SELECT(g_iemAImpl_rol_eflags));
}


/**
 * @opmaps      grp2_d1
 * @opcode      /1
 * @opflclass   rotate_1
 */
FNIEMOP_DEF_1(iemOp_grp2_ror_Ev_1, uint8_t, bRm)
{
    IEMOP_MNEMONIC2(M1, ROR, ror, Ev, 1, DISOPTYPE_HARMLESS, 0);
    GRP2_BODY_Ev_1(IEMTARGETCPU_EFL_BEHAVIOR_SELECT(g_iemAImpl_ror_eflags));
}


/**
 * @opmaps      grp2_d1
 * @opcode      /2
 * @opflclass   rotate_carry_1
 */
FNIEMOP_DEF_1(iemOp_grp2_rcl_Ev_1, uint8_t, bRm)
{
    IEMOP_MNEMONIC2(M1, RCL, rcl, Ev, 1, DISOPTYPE_HARMLESS, 0);
    GRP2_BODY_Ev_1(IEMTARGETCPU_EFL_BEHAVIOR_SELECT(g_iemAImpl_rcl_eflags));
}


/**
 * @opmaps      grp2_d1
 * @opcode      /3
 * @opflclass   rotate_carry_1
 */
FNIEMOP_DEF_1(iemOp_grp2_rcr_Ev_1, uint8_t, bRm)
{
    IEMOP_MNEMONIC2(M1, RCR, rcr, Ev, 1, DISOPTYPE_HARMLESS, 0);
    GRP2_BODY_Ev_1(IEMTARGETCPU_EFL_BEHAVIOR_SELECT(g_iemAImpl_rcr_eflags));
}


/**
 * @opmaps      grp2_d1
 * @opcode      /4
 * @opflclass   shift_1
 */
FNIEMOP_DEF_1(iemOp_grp2_shl_Ev_1, uint8_t, bRm)
{
    IEMOP_MNEMONIC2(M1, SHL, shl, Ev, 1, DISOPTYPE_HARMLESS, 0);
    GRP2_BODY_Ev_1(IEMTARGETCPU_EFL_BEHAVIOR_SELECT(g_iemAImpl_shl_eflags));
}


/**
 * @opmaps      grp2_d1
 * @opcode      /5
 * @opflclass   shift_1
 */
FNIEMOP_DEF_1(iemOp_grp2_shr_Ev_1, uint8_t, bRm)
{
    IEMOP_MNEMONIC2(M1, SHR, shr, Ev, 1, DISOPTYPE_HARMLESS, 0);
    GRP2_BODY_Ev_1(IEMTARGETCPU_EFL_BEHAVIOR_SELECT(g_iemAImpl_shr_eflags));
}


/**
 * @opmaps      grp2_d1
 * @opcode      /7
 * @opflclass   shift_1
 */
FNIEMOP_DEF_1(iemOp_grp2_sar_Ev_1, uint8_t, bRm)
{
    IEMOP_MNEMONIC2(M1, SAR, sar, Ev, 1, DISOPTYPE_HARMLESS, 0);
    GRP2_BODY_Ev_1(IEMTARGETCPU_EFL_BEHAVIOR_SELECT(g_iemAImpl_sar_eflags));
}

#undef GRP2_BODY_Ev_1

/**
 * @opcode      0xd1
 */
FNIEMOP_DEF(iemOp_Grp2_Ev_1)
{
    uint8_t bRm; IEM_OPCODE_GET_NEXT_U8(&bRm);
    switch (IEM_GET_MODRM_REG_8(bRm))
    {
        case 0: return FNIEMOP_CALL_1(iemOp_grp2_rol_Ev_1, bRm);
        case 1: return FNIEMOP_CALL_1(iemOp_grp2_ror_Ev_1, bRm);
        case 2: return FNIEMOP_CALL_1(iemOp_grp2_rcl_Ev_1, bRm);
        case 3: return FNIEMOP_CALL_1(iemOp_grp2_rcr_Ev_1, bRm);
        case 4: return FNIEMOP_CALL_1(iemOp_grp2_shl_Ev_1, bRm);
        case 5: return FNIEMOP_CALL_1(iemOp_grp2_shr_Ev_1, bRm);
        case 7: return FNIEMOP_CALL_1(iemOp_grp2_sar_Ev_1, bRm);
        case 6: IEMOP_RAISE_INVALID_OPCODE_RET();
        IEM_NOT_REACHED_DEFAULT_CASE_RET(); /* gcc maybe, well... */
    }
}


/**
 * @opcode      0xd2
 */
FNIEMOP_DEF(iemOp_Grp2_Eb_CL)
{
    uint8_t bRm; IEM_OPCODE_GET_NEXT_U8(&bRm);

    /* Need to use a body macro here since the EFLAGS behaviour differs between
       the shifts, rotates and rotate w/ carry. Sigh. */
#define GRP2_BODY_Eb_CL(a_pImplExpr) \
        PCIEMOPSHIFTSIZES const pImpl = (a_pImplExpr); \
        if (IEM_IS_MODRM_REG_MODE(bRm)) \
        { \
            /* register */ \
            IEM_MC_BEGIN(0, 0); \
            IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX(); \
            IEM_MC_ARG(uint8_t,     cShiftArg,  2); \
            IEM_MC_FETCH_GREG_U8(cShiftArg, X86_GREG_xCX); \
            IEM_MC_ARG(uint8_t *,   pu8Dst,     1); \
            IEM_MC_REF_GREG_U8(pu8Dst, IEM_GET_MODRM_RM(pVCpu, bRm)); \
            IEM_MC_ARG_EFLAGS(      fEFlagsIn,  0); \
            IEM_MC_CALL_AIMPL_3(uint32_t, fEFlagsRet, pImpl->pfnNormalU8, fEFlagsIn, pu8Dst, cShiftArg); \
            IEM_MC_COMMIT_EFLAGS(fEFlagsRet); \
            IEM_MC_ADVANCE_RIP_AND_FINISH(); \
            IEM_MC_END(); \
        } \
        else \
        { \
            /* memory */ \
            IEM_MC_BEGIN(0, 0); \
            IEM_MC_LOCAL(RTGCPTR, GCPtrEffDst); \
            IEM_MC_CALC_RM_EFF_ADDR(GCPtrEffDst, bRm, 0); \
            IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX(); \
            \
            IEM_MC_LOCAL(uint8_t,   bUnmapInfo); \
            IEM_MC_ARG(uint8_t *,   pu8Dst,     1); \
            IEM_MC_MEM_MAP_U8_RW(pu8Dst, bUnmapInfo, pVCpu->iem.s.iEffSeg, GCPtrEffDst); \
            \
            IEM_MC_ARG(uint8_t,     cShiftArg,  2); \
            IEM_MC_FETCH_GREG_U8(cShiftArg, X86_GREG_xCX); \
            \
            IEM_MC_ARG_EFLAGS(      fEFlagsIn,  0); \
            IEM_MC_CALL_AIMPL_3(uint32_t, fEFlagsRet, pImpl->pfnNormalU8, fEFlagsIn, pu8Dst, cShiftArg); \
            \
            IEM_MC_MEM_COMMIT_AND_UNMAP_RW(bUnmapInfo); \
            IEM_MC_COMMIT_EFLAGS(fEFlagsRet); \
            IEM_MC_ADVANCE_RIP_AND_FINISH(); \
            IEM_MC_END(); \
        } (void)0

    switch (IEM_GET_MODRM_REG_8(bRm))
    {
        /**
         * @opdone
         * @opmaps      grp2_d0
         * @opcode      /0
         * @opflclass   rotate_count
         */
        case 0:
        {
            IEMOP_MNEMONIC2EX(rol_Eb_CL, "rol Eb,CL", M_CL, ROL, rol, Eb, REG_CL, DISOPTYPE_HARMLESS, 0);
            GRP2_BODY_Eb_CL(IEMTARGETCPU_EFL_BEHAVIOR_SELECT(g_iemAImpl_rol_eflags));
            break;
        }
        /**
         * @opdone
         * @opmaps      grp2_d0
         * @opcode      /1
         * @opflclass   rotate_count
         */
        case 1:
        {
            IEMOP_MNEMONIC2EX(ror_Eb_CL, "ror Eb,CL", M_CL, ROR, ror, Eb, REG_CL, DISOPTYPE_HARMLESS, 0);
            GRP2_BODY_Eb_CL(IEMTARGETCPU_EFL_BEHAVIOR_SELECT(g_iemAImpl_ror_eflags));
            break;
        }
        /**
         * @opdone
         * @opmaps      grp2_d0
         * @opcode      /2
         * @opflclass   rotate_carry_count
         */
        case 2:
        {
            IEMOP_MNEMONIC2EX(rcl_Eb_CL, "rcl Eb,CL", M_CL, RCL, rcl, Eb, REG_CL, DISOPTYPE_HARMLESS, 0);
            GRP2_BODY_Eb_CL(IEMTARGETCPU_EFL_BEHAVIOR_SELECT(g_iemAImpl_rcl_eflags));
            break;
        }
        /**
         * @opdone
         * @opmaps      grp2_d0
         * @opcode      /3
         * @opflclass   rotate_carry_count
         */
        case 3:
        {
            IEMOP_MNEMONIC2EX(rcr_Eb_CL, "rcr Eb,CL", M_CL, RCR, rcr, Eb, REG_CL, DISOPTYPE_HARMLESS, 0);
            GRP2_BODY_Eb_CL(IEMTARGETCPU_EFL_BEHAVIOR_SELECT(g_iemAImpl_rcr_eflags));
            break;
        }
        /**
         * @opdone
         * @opmaps      grp2_d0
         * @opcode      /4
         * @opflclass   shift_count
         */
        case 4:
        {
            IEMOP_MNEMONIC2EX(shl_Eb_CL, "shl Eb,CL", M_CL, SHL, shl, Eb, REG_CL, DISOPTYPE_HARMLESS, 0);
            GRP2_BODY_Eb_CL(IEMTARGETCPU_EFL_BEHAVIOR_SELECT(g_iemAImpl_shl_eflags));
            break;
        }
        /**
         * @opdone
         * @opmaps      grp2_d0
         * @opcode      /5
         * @opflclass   shift_count
         */
        case 5:
        {
            IEMOP_MNEMONIC2EX(shr_Eb_CL, "shr Eb,CL", M_CL, SHR, shr, Eb, REG_CL, DISOPTYPE_HARMLESS, 0);
            GRP2_BODY_Eb_CL(IEMTARGETCPU_EFL_BEHAVIOR_SELECT(g_iemAImpl_shr_eflags));
            break;
        }
        /**
         * @opdone
         * @opmaps      grp2_d0
         * @opcode      /7
         * @opflclass   shift_count
         */
        case 7:
        {
            IEMOP_MNEMONIC2EX(sar_Eb_CL, "sar Eb,CL", M_CL, SAR, sar, Eb, REG_CL, DISOPTYPE_HARMLESS, 0);
            GRP2_BODY_Eb_CL(IEMTARGETCPU_EFL_BEHAVIOR_SELECT(g_iemAImpl_sar_eflags));
            break;
        }
        /** @opdone */
        case 6: IEMOP_RAISE_INVALID_OPCODE_RET();
        IEM_NOT_REACHED_DEFAULT_CASE_RET(); /* gcc maybe, well... */
    }
#undef GRP2_BODY_Eb_CL
}


/* Need to use a body macro here since the EFLAGS behaviour differs between
   the shifts, rotates and rotate w/ carry. Sigh. */
#define GRP2_BODY_Ev_CL(a_Ins, a_pImplExpr, a_fRegNativeArchs, a_fMemNativeArchs) \
        PCIEMOPSHIFTSIZES const pImpl = (a_pImplExpr); \
        if (IEM_IS_MODRM_REG_MODE(bRm)) \
        { \
            /* register */ \
            switch (pVCpu->iem.s.enmEffOpSize) \
            { \
                case IEMMODE_16BIT: \
                    IEM_MC_BEGIN(0, 0); \
                    IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX(); \
                    IEM_MC_ARG(uint8_t,         cShiftArg,  2); \
                    IEM_MC_NATIVE_IF(a_fRegNativeArchs) { \
                        IEM_MC_NATIVE_SET_AMD64_HOST_REG_FOR_LOCAL(cShiftArg, X86_GREG_xCX); \
                        IEM_MC_FETCH_GREG_U8(cShiftArg, X86_GREG_xCX); /* we modify this on arm64 */ \
                        IEM_MC_LOCAL(uint16_t,  u16Dst); \
                        IEM_MC_FETCH_GREG_U16(u16Dst, IEM_GET_MODRM_RM(pVCpu, bRm)); \
                        IEM_MC_LOCAL_EFLAGS(fEFlags); \
                        IEM_MC_NATIVE_EMIT_4(RT_CONCAT3(iemNativeEmit_,a_Ins,_r_CL_efl), u16Dst, cShiftArg, fEFlags, 16); \
                        IEM_MC_STORE_GREG_U16(IEM_GET_MODRM_RM(pVCpu, bRm), u16Dst); \
                        IEM_MC_COMMIT_EFLAGS(fEFlags); /** @todo IEM_MC_COMMIT_EFLAGS_OPT */ \
                    } IEM_MC_NATIVE_ELSE() { \
                        IEM_MC_FETCH_GREG_U8(cShiftArg, X86_GREG_xCX); \
                        IEM_MC_ARG(uint16_t *,  pu16Dst,    1); \
                        IEM_MC_REF_GREG_U16(pu16Dst, IEM_GET_MODRM_RM(pVCpu, bRm)); \
                        IEM_MC_ARG_EFLAGS(      fEFlagsIn,  0); \
                        IEM_MC_CALL_AIMPL_3(uint32_t, fEFlagsRet, pImpl->pfnNormalU16, fEFlagsIn, pu16Dst, cShiftArg); \
                        IEM_MC_COMMIT_EFLAGS(fEFlagsRet); \
                    } IEM_MC_NATIVE_ENDIF(); \
                    IEM_MC_ADVANCE_RIP_AND_FINISH(); \
                    IEM_MC_END(); \
                    break; \
                    \
                case IEMMODE_32BIT: \
                    IEM_MC_BEGIN(IEM_MC_F_MIN_386, 0); \
                    IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX(); \
                    IEM_MC_ARG(uint8_t,         cShiftArg,  2); \
                    IEM_MC_NATIVE_IF(a_fRegNativeArchs) { \
                        IEM_MC_NATIVE_SET_AMD64_HOST_REG_FOR_LOCAL(cShiftArg, X86_GREG_xCX); \
                        IEM_MC_FETCH_GREG_U8(cShiftArg, X86_GREG_xCX); /* we modify this on arm64 */ \
                        IEM_MC_LOCAL(uint32_t,  u32Dst); \
                        IEM_MC_FETCH_GREG_U32(u32Dst, IEM_GET_MODRM_RM(pVCpu, bRm)); \
                        IEM_MC_LOCAL_EFLAGS(fEFlags); \
                        IEM_MC_NATIVE_EMIT_4(RT_CONCAT3(iemNativeEmit_,a_Ins,_r_CL_efl), u32Dst, cShiftArg, fEFlags, 32); \
                        IEM_MC_STORE_GREG_U32(IEM_GET_MODRM_RM(pVCpu, bRm), u32Dst); \
                        IEM_MC_COMMIT_EFLAGS(fEFlags); /** @todo IEM_MC_COMMIT_EFLAGS_OPT */ \
                    } IEM_MC_NATIVE_ELSE() { \
                        IEM_MC_FETCH_GREG_U8(cShiftArg, X86_GREG_xCX); \
                        IEM_MC_ARG(uint32_t *,  pu32Dst,    1); \
                        IEM_MC_REF_GREG_U32(pu32Dst, IEM_GET_MODRM_RM(pVCpu, bRm)); \
                        IEM_MC_ARG_EFLAGS(      fEFlagsIn,  0); \
                        IEM_MC_CALL_AIMPL_3(uint32_t, fEFlagsRet, pImpl->pfnNormalU32, fEFlagsIn, pu32Dst, cShiftArg); \
                        IEM_MC_CLEAR_HIGH_GREG_U64(IEM_GET_MODRM_RM(pVCpu, bRm)); \
                        IEM_MC_COMMIT_EFLAGS(fEFlagsRet); \
                    } IEM_MC_NATIVE_ENDIF(); \
                    IEM_MC_ADVANCE_RIP_AND_FINISH(); \
                    IEM_MC_END(); \
                    break; \
                    \
                case IEMMODE_64BIT: \
                    IEM_MC_BEGIN(IEM_MC_F_64BIT, 0); \
                    IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX(); \
                    IEM_MC_ARG(uint8_t,         cShiftArg,  2); \
                    IEM_MC_NATIVE_IF(a_fRegNativeArchs) { \
                        IEM_MC_NATIVE_SET_AMD64_HOST_REG_FOR_LOCAL(cShiftArg, X86_GREG_xCX); \
                        IEM_MC_FETCH_GREG_U8(cShiftArg, X86_GREG_xCX); /* we modify this on arm64 */ \
                        IEM_MC_LOCAL(uint64_t,  u64Dst); \
                        IEM_MC_FETCH_GREG_U64(u64Dst, IEM_GET_MODRM_RM(pVCpu, bRm)); \
                        IEM_MC_LOCAL_EFLAGS(fEFlags); \
                        IEM_MC_NATIVE_EMIT_4(RT_CONCAT3(iemNativeEmit_,a_Ins,_r_CL_efl), u64Dst, cShiftArg, fEFlags, 64); \
                        IEM_MC_STORE_GREG_U64(IEM_GET_MODRM_RM(pVCpu, bRm), u64Dst); \
                        IEM_MC_COMMIT_EFLAGS(fEFlags); /** @todo IEM_MC_COMMIT_EFLAGS_OPT */ \
                    } IEM_MC_NATIVE_ELSE() { \
                        IEM_MC_FETCH_GREG_U8(cShiftArg, X86_GREG_xCX); \
                        IEM_MC_ARG(uint64_t *,  pu64Dst,    1); \
                        IEM_MC_REF_GREG_U64(pu64Dst, IEM_GET_MODRM_RM(pVCpu, bRm)); \
                        IEM_MC_ARG_EFLAGS(      fEFlagsIn,  0); \
                        IEM_MC_CALL_AIMPL_3(uint32_t, fEFlagsRet, pImpl->pfnNormalU64, fEFlagsIn, pu64Dst, cShiftArg); \
                        IEM_MC_COMMIT_EFLAGS(fEFlagsRet); \
                    } IEM_MC_NATIVE_ENDIF(); \
                    IEM_MC_ADVANCE_RIP_AND_FINISH(); \
                    IEM_MC_END(); \
                    break; \
                    \
                IEM_NOT_REACHED_DEFAULT_CASE_RET(); \
            } \
        } \
        else \
        { \
            /* memory */ \
            switch (pVCpu->iem.s.enmEffOpSize) \
            { \
                case IEMMODE_16BIT: \
                    IEM_MC_BEGIN(0, 0); \
                    IEM_MC_LOCAL(RTGCPTR,   GCPtrEffDst); \
                    IEM_MC_CALC_RM_EFF_ADDR(GCPtrEffDst, bRm, 0); \
                    IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX(); \
                    \
                    IEM_MC_LOCAL(uint8_t,   bUnmapInfo); \
                    IEM_MC_ARG(uint16_t *,  pu16Dst,    1); \
                    IEM_MC_MEM_MAP_U16_RW(pu16Dst, bUnmapInfo, pVCpu->iem.s.iEffSeg, GCPtrEffDst); \
                    \
                    IEM_MC_ARG(uint8_t,     cShiftArg,  2); \
                    IEM_MC_FETCH_GREG_U8(cShiftArg, X86_GREG_xCX); \
                    IEM_MC_ARG_EFLAGS(      fEFlagsIn,  0); \
                    IEM_MC_CALL_AIMPL_3(uint32_t, fEFlagsRet, pImpl->pfnNormalU16, fEFlagsIn, pu16Dst, cShiftArg); \
                    \
                    IEM_MC_MEM_COMMIT_AND_UNMAP_RW(bUnmapInfo); \
                    IEM_MC_COMMIT_EFLAGS(fEFlagsRet); \
                    IEM_MC_ADVANCE_RIP_AND_FINISH(); \
                    IEM_MC_END(); \
                    break; \
                    \
                case IEMMODE_32BIT: \
                    IEM_MC_BEGIN(IEM_MC_F_MIN_386, 0); \
                    IEM_MC_LOCAL(RTGCPTR,   GCPtrEffDst); \
                    IEM_MC_CALC_RM_EFF_ADDR(GCPtrEffDst, bRm, 0); \
                    IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX(); \
                    \
                    IEM_MC_LOCAL(uint8_t,   bUnmapInfo); \
                    IEM_MC_ARG(uint32_t *,  pu32Dst,    1); \
                    IEM_MC_MEM_MAP_U32_RW(pu32Dst, bUnmapInfo, pVCpu->iem.s.iEffSeg, GCPtrEffDst); \
                    \
                    IEM_MC_ARG(uint8_t,     cShiftArg,  2); \
                    IEM_MC_FETCH_GREG_U8(cShiftArg, X86_GREG_xCX); \
                    IEM_MC_ARG_EFLAGS(      fEFlagsIn,  0); \
                    IEM_MC_CALL_AIMPL_3(uint32_t, fEFlagsRet, pImpl->pfnNormalU32, fEFlagsIn, pu32Dst, cShiftArg); \
                    \
                    IEM_MC_MEM_COMMIT_AND_UNMAP_RW(bUnmapInfo); \
                    IEM_MC_COMMIT_EFLAGS(fEFlagsRet); \
                    IEM_MC_ADVANCE_RIP_AND_FINISH(); \
                    IEM_MC_END(); \
                    break; \
                    \
                case IEMMODE_64BIT: \
                    IEM_MC_BEGIN(IEM_MC_F_64BIT, 0); \
                    IEM_MC_LOCAL(RTGCPTR, GCPtrEffDst); \
                    IEM_MC_CALC_RM_EFF_ADDR(GCPtrEffDst, bRm, 0); \
                    IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX(); \
                    \
                    IEM_MC_LOCAL(uint8_t,   bUnmapInfo); \
                    IEM_MC_ARG(uint64_t *,  pu64Dst,    1); \
                    IEM_MC_MEM_MAP_U64_RW(pu64Dst, bUnmapInfo, pVCpu->iem.s.iEffSeg, GCPtrEffDst); \
                    \
                    IEM_MC_ARG(uint8_t,     cShiftArg,  2); \
                    IEM_MC_FETCH_GREG_U8(cShiftArg, X86_GREG_xCX); \
                    IEM_MC_ARG_EFLAGS(      fEFlagsIn,  0); \
                    IEM_MC_CALL_AIMPL_3(uint32_t, fEFlagsRet, pImpl->pfnNormalU64, fEFlagsIn, pu64Dst, cShiftArg); \
                    \
                    IEM_MC_MEM_COMMIT_AND_UNMAP_RW(bUnmapInfo); \
                    IEM_MC_COMMIT_EFLAGS(fEFlagsRet); \
                    IEM_MC_ADVANCE_RIP_AND_FINISH(); \
                    IEM_MC_END(); \
                    break; \
                    \
                IEM_NOT_REACHED_DEFAULT_CASE_RET(); \
            } \
        } (void)0


/**
 * @opmaps      grp2_d0
 * @opcode      /0
 * @opflclass   rotate_count
 */
FNIEMOP_DEF_1(iemOp_grp2_rol_Ev_CL, uint8_t, bRm)
{
    IEMOP_MNEMONIC2EX(rol_Ev_CL, "rol Ev,CL", M_CL, ROL, rol, Ev, REG_CL, DISOPTYPE_HARMLESS, 0);
    GRP2_BODY_Ev_CL(rol, IEMTARGETCPU_EFL_BEHAVIOR_SELECT(g_iemAImpl_rol_eflags), 0, 0);
}


/**
 * @opmaps      grp2_d0
 * @opcode      /1
 * @opflclass   rotate_count
 */
FNIEMOP_DEF_1(iemOp_grp2_ror_Ev_CL, uint8_t, bRm)
{
    IEMOP_MNEMONIC2EX(ror_Ev_CL, "ror Ev,CL", M_CL, ROR, ror, Ev, REG_CL, DISOPTYPE_HARMLESS, 0);
    GRP2_BODY_Ev_CL(ror, IEMTARGETCPU_EFL_BEHAVIOR_SELECT(g_iemAImpl_ror_eflags), 0, 0);
}


/**
 * @opmaps      grp2_d0
 * @opcode      /2
 * @opflclass   rotate_carry_count
 */
FNIEMOP_DEF_1(iemOp_grp2_rcl_Ev_CL, uint8_t, bRm)
{
    IEMOP_MNEMONIC2EX(rcl_Ev_CL, "rcl Ev,CL", M_CL, RCL, rcl, Ev, REG_CL, DISOPTYPE_HARMLESS, 0);
    GRP2_BODY_Ev_CL(rcl, IEMTARGETCPU_EFL_BEHAVIOR_SELECT(g_iemAImpl_rcl_eflags), 0, 0);
}


/**
 * @opmaps      grp2_d0
 * @opcode      /3
 * @opflclass   rotate_carry_count
 */
FNIEMOP_DEF_1(iemOp_grp2_rcr_Ev_CL, uint8_t, bRm)
{
    IEMOP_MNEMONIC2EX(rcr_Ev_CL, "rcr Ev,CL", M_CL, RCR, rcr, Ev, REG_CL, DISOPTYPE_HARMLESS, 0);
    GRP2_BODY_Ev_CL(rcr, IEMTARGETCPU_EFL_BEHAVIOR_SELECT(g_iemAImpl_rcr_eflags), 0, 0);
}


/**
 * @opmaps      grp2_d0
 * @opcode      /4
 * @opflclass   shift_count
 */
FNIEMOP_DEF_1(iemOp_grp2_shl_Ev_CL, uint8_t, bRm)
{
    IEMOP_MNEMONIC2EX(shl_Ev_CL, "shl Ev,CL", M_CL, SHL, shl, Ev, REG_CL, DISOPTYPE_HARMLESS, 0);
    GRP2_BODY_Ev_CL(shl, IEMTARGETCPU_EFL_BEHAVIOR_SELECT(g_iemAImpl_shl_eflags), RT_ARCH_VAL_AMD64 | RT_ARCH_VAL_ARM64, 0);
}


/**
 * @opmaps      grp2_d0
 * @opcode      /5
 * @opflclass   shift_count
 */
FNIEMOP_DEF_1(iemOp_grp2_shr_Ev_CL, uint8_t, bRm)
{
    IEMOP_MNEMONIC2EX(shr_Ev_CL, "shr Ev,CL", M_CL, SHR, shr, Ev, REG_CL, DISOPTYPE_HARMLESS, 0);
    GRP2_BODY_Ev_CL(shr, IEMTARGETCPU_EFL_BEHAVIOR_SELECT(g_iemAImpl_shr_eflags), 0, 0);
}


/**
 * @opmaps      grp2_d0
 * @opcode      /7
 * @opflclass   shift_count
 */
FNIEMOP_DEF_1(iemOp_grp2_sar_Ev_CL, uint8_t, bRm)
{
    IEMOP_MNEMONIC2EX(sar_Ev_CL, "sar Ev,CL", M_CL, SAR, sar, Ev, REG_CL, DISOPTYPE_HARMLESS, 0);
    GRP2_BODY_Ev_CL(sar, IEMTARGETCPU_EFL_BEHAVIOR_SELECT(g_iemAImpl_sar_eflags), 0, 0);
}

#undef GRP2_BODY_Ev_CL

/**
 * @opcode      0xd3
 */
FNIEMOP_DEF(iemOp_Grp2_Ev_CL)
{
    uint8_t bRm; IEM_OPCODE_GET_NEXT_U8(&bRm);
    switch (IEM_GET_MODRM_REG_8(bRm))
    {
        case 0: return FNIEMOP_CALL_1(iemOp_grp2_rol_Ev_CL, bRm);
        case 1: return FNIEMOP_CALL_1(iemOp_grp2_ror_Ev_CL, bRm);
        case 2: return FNIEMOP_CALL_1(iemOp_grp2_rcl_Ev_CL, bRm);
        case 3: return FNIEMOP_CALL_1(iemOp_grp2_rcr_Ev_CL, bRm);
        case 4: return FNIEMOP_CALL_1(iemOp_grp2_shl_Ev_CL, bRm);
        case 5: return FNIEMOP_CALL_1(iemOp_grp2_shr_Ev_CL, bRm);
        case 7: return FNIEMOP_CALL_1(iemOp_grp2_sar_Ev_CL, bRm);
        case 6: IEMOP_RAISE_INVALID_OPCODE_RET();
        IEM_NOT_REACHED_DEFAULT_CASE_RET(); /* gcc maybe, well... */
    }
}


/**
 * @opcode      0xd4
 * @opflmodify  cf,pf,af,zf,sf,of
 * @opflundef   cf,af,of
 */
FNIEMOP_DEF(iemOp_aam_Ib)
{
/** @todo testcase: aam   */
    IEMOP_MNEMONIC(aam_Ib, "aam Ib");
    uint8_t bImm; IEM_OPCODE_GET_NEXT_U8(&bImm);
    IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
    IEMOP_HLP_NO_64BIT();
    if (!bImm)
        IEMOP_RAISE_DIVIDE_ERROR_RET();
    IEM_MC_DEFER_TO_CIMPL_1_RET(IEM_CIMPL_F_STATUS_FLAGS, RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xAX), iemCImpl_aam, bImm);
}


/**
 * @opcode      0xd5
 * @opflmodify  cf,pf,af,zf,sf,of
 * @opflundef   cf,af,of
 */
FNIEMOP_DEF(iemOp_aad_Ib)
{
/** @todo testcase: aad?   */
    IEMOP_MNEMONIC(aad_Ib, "aad Ib");
    uint8_t bImm; IEM_OPCODE_GET_NEXT_U8(&bImm);
    IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
    IEMOP_HLP_NO_64BIT();
    IEM_MC_DEFER_TO_CIMPL_1_RET(IEM_CIMPL_F_STATUS_FLAGS, RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xAX), iemCImpl_aad, bImm);
}


/**
 * @opcode      0xd6
 */
FNIEMOP_DEF(iemOp_salc)
{
    IEMOP_MNEMONIC(salc, "salc");
    IEMOP_HLP_NO_64BIT();

    IEM_MC_BEGIN(0, 0);
    IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
    IEM_MC_IF_EFL_BIT_SET(X86_EFL_CF) {
        IEM_MC_STORE_GREG_U8_CONST(X86_GREG_xAX, 0xff);
    } IEM_MC_ELSE() {
        IEM_MC_STORE_GREG_U8_CONST(X86_GREG_xAX, 0x00);
    } IEM_MC_ENDIF();
    IEM_MC_ADVANCE_RIP_AND_FINISH();
    IEM_MC_END();
}


/**
 * @opcode      0xd7
 */
FNIEMOP_DEF(iemOp_xlat)
{
    IEMOP_MNEMONIC(xlat, "xlat");
    switch (pVCpu->iem.s.enmEffAddrMode)
    {
        case IEMMODE_16BIT:
            IEM_MC_BEGIN(0, 0);
            IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
            IEM_MC_LOCAL(uint8_t,  u8Tmp);
            IEM_MC_LOCAL(uint16_t, u16Addr);
            IEM_MC_FETCH_GREG_U8_ZX_U16(u16Addr, X86_GREG_xAX);
            IEM_MC_ADD_GREG_U16_TO_LOCAL(u16Addr, X86_GREG_xBX);
            IEM_MC_FETCH_MEM16_U8(u8Tmp, pVCpu->iem.s.iEffSeg, u16Addr);
            IEM_MC_STORE_GREG_U8(X86_GREG_xAX, u8Tmp);
            IEM_MC_ADVANCE_RIP_AND_FINISH();
            IEM_MC_END();
            break;

        case IEMMODE_32BIT:
            IEM_MC_BEGIN(IEM_MC_F_MIN_386, 0);
            IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
            IEM_MC_LOCAL(uint8_t,  u8Tmp);
            IEM_MC_LOCAL(uint32_t, u32Addr);
            IEM_MC_FETCH_GREG_U8_ZX_U32(u32Addr, X86_GREG_xAX);
            IEM_MC_ADD_GREG_U32_TO_LOCAL(u32Addr, X86_GREG_xBX);
            IEM_MC_FETCH_MEM32_U8(u8Tmp, pVCpu->iem.s.iEffSeg, u32Addr);
            IEM_MC_STORE_GREG_U8(X86_GREG_xAX, u8Tmp);
            IEM_MC_ADVANCE_RIP_AND_FINISH();
            IEM_MC_END();
            break;

        case IEMMODE_64BIT:
            IEM_MC_BEGIN(IEM_MC_F_64BIT, 0);
            IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
            IEM_MC_LOCAL(uint8_t,  u8Tmp);
            IEM_MC_LOCAL(uint64_t, u64Addr);
            IEM_MC_FETCH_GREG_U8_ZX_U64(u64Addr, X86_GREG_xAX);
            IEM_MC_ADD_GREG_U64_TO_LOCAL(u64Addr, X86_GREG_xBX);
            IEM_MC_FETCH_MEM_U8(u8Tmp, pVCpu->iem.s.iEffSeg, u64Addr);
            IEM_MC_STORE_GREG_U8(X86_GREG_xAX, u8Tmp);
            IEM_MC_ADVANCE_RIP_AND_FINISH();
            IEM_MC_END();
            break;

         IEM_NOT_REACHED_DEFAULT_CASE_RET();
    }
}


/**
 * Common worker for FPU instructions working on ST0 and STn, and storing the
 * result in ST0.
 *
 * @param   bRm         Mod R/M byte.
 * @param   pfnAImpl    Pointer to the instruction implementation (assembly).
 */
FNIEMOP_DEF_2(iemOpHlpFpu_st0_stN, uint8_t, bRm, PFNIEMAIMPLFPUR80, pfnAImpl)
{
    IEM_MC_BEGIN(0, 0);
    IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
    IEM_MC_LOCAL(IEMFPURESULT,          FpuRes);
    IEM_MC_ARG_LOCAL_REF(PIEMFPURESULT, pFpuRes,        FpuRes,     0);
    IEM_MC_ARG(PCRTFLOAT80U,            pr80Value1,                 1);
    IEM_MC_ARG(PCRTFLOAT80U,            pr80Value2,                 2);

    IEM_MC_MAYBE_RAISE_DEVICE_NOT_AVAILABLE();
    IEM_MC_MAYBE_RAISE_FPU_XCPT();
    IEM_MC_PREPARE_FPU_USAGE();
    IEM_MC_IF_TWO_FPUREGS_NOT_EMPTY_REF_R80(pr80Value1, 0, pr80Value2, IEM_GET_MODRM_RM_8(bRm)) {
        IEM_MC_CALL_FPU_AIMPL_3(pfnAImpl, pFpuRes, pr80Value1, pr80Value2);
        IEM_MC_STORE_FPU_RESULT(FpuRes, 0, pVCpu->iem.s.uFpuOpcode);
    } IEM_MC_ELSE() {
        IEM_MC_FPU_STACK_UNDERFLOW(0, pVCpu->iem.s.uFpuOpcode);
    } IEM_MC_ENDIF();
    IEM_MC_ADVANCE_RIP_AND_FINISH();

    IEM_MC_END();
}


/**
 * Common worker for FPU instructions working on ST0 and STn, and only affecting
 * flags.
 *
 * @param   bRm         Mod R/M byte.
 * @param   pfnAImpl    Pointer to the instruction implementation (assembly).
 */
FNIEMOP_DEF_2(iemOpHlpFpuNoStore_st0_stN, uint8_t, bRm, PFNIEMAIMPLFPUR80FSW, pfnAImpl)
{
    IEM_MC_BEGIN(0, 0);
    IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
    IEM_MC_LOCAL(uint16_t,              u16Fsw);
    IEM_MC_ARG_LOCAL_REF(uint16_t *,    pu16Fsw,        u16Fsw,     0);
    IEM_MC_ARG(PCRTFLOAT80U,            pr80Value1,                 1);
    IEM_MC_ARG(PCRTFLOAT80U,            pr80Value2,                 2);

    IEM_MC_MAYBE_RAISE_DEVICE_NOT_AVAILABLE();
    IEM_MC_MAYBE_RAISE_FPU_XCPT();
    IEM_MC_PREPARE_FPU_USAGE();
    IEM_MC_IF_TWO_FPUREGS_NOT_EMPTY_REF_R80(pr80Value1, 0, pr80Value2, IEM_GET_MODRM_RM_8(bRm)) {
        IEM_MC_CALL_FPU_AIMPL_3(pfnAImpl, pu16Fsw, pr80Value1, pr80Value2);
        IEM_MC_UPDATE_FSW(u16Fsw, pVCpu->iem.s.uFpuOpcode);
    } IEM_MC_ELSE() {
        IEM_MC_FPU_STACK_UNDERFLOW(UINT8_MAX, pVCpu->iem.s.uFpuOpcode);
    } IEM_MC_ENDIF();
    IEM_MC_ADVANCE_RIP_AND_FINISH();

    IEM_MC_END();
}


/**
 * Common worker for FPU instructions working on ST0 and STn, only affecting
 * flags, and popping when done.
 *
 * @param   bRm         Mod R/M byte.
 * @param   pfnAImpl    Pointer to the instruction implementation (assembly).
 */
FNIEMOP_DEF_2(iemOpHlpFpuNoStore_st0_stN_pop, uint8_t, bRm, PFNIEMAIMPLFPUR80FSW, pfnAImpl)
{
    IEM_MC_BEGIN(0, 0);
    IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
    IEM_MC_LOCAL(uint16_t,              u16Fsw);
    IEM_MC_ARG_LOCAL_REF(uint16_t *,    pu16Fsw,        u16Fsw,     0);
    IEM_MC_ARG(PCRTFLOAT80U,            pr80Value1,                 1);
    IEM_MC_ARG(PCRTFLOAT80U,            pr80Value2,                 2);

    IEM_MC_MAYBE_RAISE_DEVICE_NOT_AVAILABLE();
    IEM_MC_MAYBE_RAISE_FPU_XCPT();
    IEM_MC_PREPARE_FPU_USAGE();
    IEM_MC_IF_TWO_FPUREGS_NOT_EMPTY_REF_R80(pr80Value1, 0, pr80Value2, IEM_GET_MODRM_RM_8(bRm)) {
        IEM_MC_CALL_FPU_AIMPL_3(pfnAImpl, pu16Fsw, pr80Value1, pr80Value2);
        IEM_MC_UPDATE_FSW_THEN_POP(u16Fsw, pVCpu->iem.s.uFpuOpcode);
    } IEM_MC_ELSE() {
        IEM_MC_FPU_STACK_UNDERFLOW_THEN_POP(UINT8_MAX, pVCpu->iem.s.uFpuOpcode);
    } IEM_MC_ENDIF();
    IEM_MC_ADVANCE_RIP_AND_FINISH();

    IEM_MC_END();
}


/** Opcode 0xd8 11/0. */
FNIEMOP_DEF_1(iemOp_fadd_stN,   uint8_t, bRm)
{
    IEMOP_MNEMONIC(fadd_st0_stN, "fadd st0,stN");
    return FNIEMOP_CALL_2(iemOpHlpFpu_st0_stN, bRm, iemAImpl_fadd_r80_by_r80);
}


/** Opcode 0xd8 11/1. */
FNIEMOP_DEF_1(iemOp_fmul_stN,   uint8_t, bRm)
{
    IEMOP_MNEMONIC(fmul_st0_stN, "fmul st0,stN");
    return FNIEMOP_CALL_2(iemOpHlpFpu_st0_stN, bRm, iemAImpl_fmul_r80_by_r80);
}


/** Opcode 0xd8 11/2. */
FNIEMOP_DEF_1(iemOp_fcom_stN,   uint8_t, bRm)
{
    IEMOP_MNEMONIC(fcom_st0_stN, "fcom st0,stN");
    return FNIEMOP_CALL_2(iemOpHlpFpuNoStore_st0_stN, bRm, iemAImpl_fcom_r80_by_r80);
}


/** Opcode 0xd8 11/3. */
FNIEMOP_DEF_1(iemOp_fcomp_stN,  uint8_t, bRm)
{
    IEMOP_MNEMONIC(fcomp_st0_stN, "fcomp st0,stN");
    return FNIEMOP_CALL_2(iemOpHlpFpuNoStore_st0_stN_pop, bRm, iemAImpl_fcom_r80_by_r80);
}


/** Opcode 0xd8 11/4. */
FNIEMOP_DEF_1(iemOp_fsub_stN,   uint8_t, bRm)
{
    IEMOP_MNEMONIC(fsub_st0_stN, "fsub st0,stN");
    return FNIEMOP_CALL_2(iemOpHlpFpu_st0_stN, bRm, iemAImpl_fsub_r80_by_r80);
}


/** Opcode 0xd8 11/5. */
FNIEMOP_DEF_1(iemOp_fsubr_stN,  uint8_t, bRm)
{
    IEMOP_MNEMONIC(fsubr_st0_stN, "fsubr st0,stN");
    return FNIEMOP_CALL_2(iemOpHlpFpu_st0_stN, bRm, iemAImpl_fsubr_r80_by_r80);
}


/** Opcode 0xd8 11/6. */
FNIEMOP_DEF_1(iemOp_fdiv_stN,   uint8_t, bRm)
{
    IEMOP_MNEMONIC(fdiv_st0_stN, "fdiv st0,stN");
    return FNIEMOP_CALL_2(iemOpHlpFpu_st0_stN, bRm, iemAImpl_fdiv_r80_by_r80);
}


/** Opcode 0xd8 11/7. */
FNIEMOP_DEF_1(iemOp_fdivr_stN,  uint8_t, bRm)
{
    IEMOP_MNEMONIC(fdivr_st0_stN, "fdivr st0,stN");
    return FNIEMOP_CALL_2(iemOpHlpFpu_st0_stN, bRm, iemAImpl_fdivr_r80_by_r80);
}


/**
 * Common worker for FPU instructions working on ST0 and an m32r, and storing
 * the result in ST0.
 *
 * @param   bRm         Mod R/M byte.
 * @param   pfnAImpl    Pointer to the instruction implementation (assembly).
 */
FNIEMOP_DEF_2(iemOpHlpFpu_st0_m32r, uint8_t, bRm, PFNIEMAIMPLFPUR32, pfnAImpl)
{
    IEM_MC_BEGIN(0, 0);
    IEM_MC_LOCAL(RTGCPTR,               GCPtrEffSrc);
    IEM_MC_LOCAL(IEMFPURESULT,          FpuRes);
    IEM_MC_LOCAL(RTFLOAT32U,            r32Val2);
    IEM_MC_ARG_LOCAL_REF(PIEMFPURESULT, pFpuRes,        FpuRes,     0);
    IEM_MC_ARG(PCRTFLOAT80U,            pr80Value1,                 1);
    IEM_MC_ARG_LOCAL_REF(PCRTFLOAT32U,  pr32Val2,       r32Val2,    2);

    IEM_MC_CALC_RM_EFF_ADDR(GCPtrEffSrc, bRm, 0);
    IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();

    IEM_MC_MAYBE_RAISE_DEVICE_NOT_AVAILABLE();
    IEM_MC_MAYBE_RAISE_FPU_XCPT();
    IEM_MC_FETCH_MEM_R32(r32Val2, pVCpu->iem.s.iEffSeg, GCPtrEffSrc);

    IEM_MC_PREPARE_FPU_USAGE();
    IEM_MC_IF_FPUREG_NOT_EMPTY_REF_R80(pr80Value1, 0) {
        IEM_MC_CALL_FPU_AIMPL_3(pfnAImpl, pFpuRes, pr80Value1, pr32Val2);
        IEM_MC_STORE_FPU_RESULT(FpuRes, 0, pVCpu->iem.s.uFpuOpcode);
    } IEM_MC_ELSE() {
        IEM_MC_FPU_STACK_UNDERFLOW(0, pVCpu->iem.s.uFpuOpcode);
    } IEM_MC_ENDIF();
    IEM_MC_ADVANCE_RIP_AND_FINISH();

    IEM_MC_END();
}


/** Opcode 0xd8 !11/0. */
FNIEMOP_DEF_1(iemOp_fadd_m32r,  uint8_t, bRm)
{
    IEMOP_MNEMONIC(fadd_st0_m32r, "fadd st0,m32r");
    return FNIEMOP_CALL_2(iemOpHlpFpu_st0_m32r, bRm, iemAImpl_fadd_r80_by_r32);
}


/** Opcode 0xd8 !11/1. */
FNIEMOP_DEF_1(iemOp_fmul_m32r,  uint8_t, bRm)
{
    IEMOP_MNEMONIC(fmul_st0_m32r, "fmul st0,m32r");
    return FNIEMOP_CALL_2(iemOpHlpFpu_st0_m32r, bRm, iemAImpl_fmul_r80_by_r32);
}


/** Opcode 0xd8 !11/2. */
FNIEMOP_DEF_1(iemOp_fcom_m32r,  uint8_t, bRm)
{
    IEMOP_MNEMONIC(fcom_st0_m32r, "fcom st0,m32r");

    IEM_MC_BEGIN(0, 0);
    IEM_MC_LOCAL(RTGCPTR,               GCPtrEffSrc);
    IEM_MC_LOCAL(uint16_t,              u16Fsw);
    IEM_MC_LOCAL(RTFLOAT32U,            r32Val2);
    IEM_MC_ARG_LOCAL_REF(uint16_t *,    pu16Fsw,        u16Fsw,     0);
    IEM_MC_ARG(PCRTFLOAT80U,            pr80Value1,                 1);
    IEM_MC_ARG_LOCAL_REF(PCRTFLOAT32U,  pr32Val2,       r32Val2,    2);

    IEM_MC_CALC_RM_EFF_ADDR(GCPtrEffSrc, bRm, 0);
    IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();

    IEM_MC_MAYBE_RAISE_DEVICE_NOT_AVAILABLE();
    IEM_MC_MAYBE_RAISE_FPU_XCPT();
    IEM_MC_FETCH_MEM_R32(r32Val2, pVCpu->iem.s.iEffSeg, GCPtrEffSrc);

    IEM_MC_PREPARE_FPU_USAGE();
    IEM_MC_IF_FPUREG_NOT_EMPTY_REF_R80(pr80Value1, 0) {
        IEM_MC_CALL_FPU_AIMPL_3(iemAImpl_fcom_r80_by_r32, pu16Fsw, pr80Value1, pr32Val2);
        IEM_MC_UPDATE_FSW_WITH_MEM_OP(u16Fsw, pVCpu->iem.s.iEffSeg, GCPtrEffSrc, pVCpu->iem.s.uFpuOpcode);
    } IEM_MC_ELSE() {
        IEM_MC_FPU_STACK_UNDERFLOW_MEM_OP(UINT8_MAX, pVCpu->iem.s.iEffSeg, GCPtrEffSrc, pVCpu->iem.s.uFpuOpcode);
    } IEM_MC_ENDIF();
    IEM_MC_ADVANCE_RIP_AND_FINISH();

    IEM_MC_END();
}


/** Opcode 0xd8 !11/3. */
FNIEMOP_DEF_1(iemOp_fcomp_m32r, uint8_t, bRm)
{
    IEMOP_MNEMONIC(fcomp_st0_m32r, "fcomp st0,m32r");

    IEM_MC_BEGIN(0, 0);
    IEM_MC_LOCAL(RTGCPTR,               GCPtrEffSrc);
    IEM_MC_LOCAL(uint16_t,              u16Fsw);
    IEM_MC_LOCAL(RTFLOAT32U,            r32Val2);
    IEM_MC_ARG_LOCAL_REF(uint16_t *,    pu16Fsw,        u16Fsw,     0);
    IEM_MC_ARG(PCRTFLOAT80U,            pr80Value1,                 1);
    IEM_MC_ARG_LOCAL_REF(PCRTFLOAT32U,  pr32Val2,       r32Val2,    2);

    IEM_MC_CALC_RM_EFF_ADDR(GCPtrEffSrc, bRm, 0);
    IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();

    IEM_MC_MAYBE_RAISE_DEVICE_NOT_AVAILABLE();
    IEM_MC_MAYBE_RAISE_FPU_XCPT();
    IEM_MC_FETCH_MEM_R32(r32Val2, pVCpu->iem.s.iEffSeg, GCPtrEffSrc);

    IEM_MC_PREPARE_FPU_USAGE();
    IEM_MC_IF_FPUREG_NOT_EMPTY_REF_R80(pr80Value1, 0) {
        IEM_MC_CALL_FPU_AIMPL_3(iemAImpl_fcom_r80_by_r32, pu16Fsw, pr80Value1, pr32Val2);
        IEM_MC_UPDATE_FSW_WITH_MEM_OP_THEN_POP(u16Fsw, pVCpu->iem.s.iEffSeg, GCPtrEffSrc, pVCpu->iem.s.uFpuOpcode);
    } IEM_MC_ELSE() {
        IEM_MC_FPU_STACK_UNDERFLOW_MEM_OP_THEN_POP(UINT8_MAX, pVCpu->iem.s.iEffSeg, GCPtrEffSrc, pVCpu->iem.s.uFpuOpcode);
    } IEM_MC_ENDIF();
    IEM_MC_ADVANCE_RIP_AND_FINISH();

    IEM_MC_END();
}


/** Opcode 0xd8 !11/4. */
FNIEMOP_DEF_1(iemOp_fsub_m32r,  uint8_t, bRm)
{
    IEMOP_MNEMONIC(fsub_st0_m32r, "fsub st0,m32r");
    return FNIEMOP_CALL_2(iemOpHlpFpu_st0_m32r, bRm, iemAImpl_fsub_r80_by_r32);
}


/** Opcode 0xd8 !11/5. */
FNIEMOP_DEF_1(iemOp_fsubr_m32r, uint8_t, bRm)
{
    IEMOP_MNEMONIC(fsubr_st0_m32r, "fsubr st0,m32r");
    return FNIEMOP_CALL_2(iemOpHlpFpu_st0_m32r, bRm, iemAImpl_fsubr_r80_by_r32);
}


/** Opcode 0xd8 !11/6. */
FNIEMOP_DEF_1(iemOp_fdiv_m32r,  uint8_t, bRm)
{
    IEMOP_MNEMONIC(fdiv_st0_m32r, "fdiv st0,m32r");
    return FNIEMOP_CALL_2(iemOpHlpFpu_st0_m32r, bRm, iemAImpl_fdiv_r80_by_r32);
}


/** Opcode 0xd8 !11/7. */
FNIEMOP_DEF_1(iemOp_fdivr_m32r, uint8_t, bRm)
{
    IEMOP_MNEMONIC(fdivr_st0_m32r, "fdivr st0,m32r");
    return FNIEMOP_CALL_2(iemOpHlpFpu_st0_m32r, bRm, iemAImpl_fdivr_r80_by_r32);
}


/**
 * @opcode      0xd8
 */
FNIEMOP_DEF(iemOp_EscF0)
{
    uint8_t bRm; IEM_OPCODE_GET_NEXT_U8(&bRm);
    pVCpu->iem.s.uFpuOpcode = RT_MAKE_U16(bRm, 0xd8 & 0x7);

    if (IEM_IS_MODRM_REG_MODE(bRm))
    {
        switch (IEM_GET_MODRM_REG_8(bRm))
        {
            case 0: return FNIEMOP_CALL_1(iemOp_fadd_stN,  bRm);
            case 1: return FNIEMOP_CALL_1(iemOp_fmul_stN,  bRm);
            case 2: return FNIEMOP_CALL_1(iemOp_fcom_stN,  bRm);
            case 3: return FNIEMOP_CALL_1(iemOp_fcomp_stN, bRm);
            case 4: return FNIEMOP_CALL_1(iemOp_fsub_stN,  bRm);
            case 5: return FNIEMOP_CALL_1(iemOp_fsubr_stN, bRm);
            case 6: return FNIEMOP_CALL_1(iemOp_fdiv_stN,  bRm);
            case 7: return FNIEMOP_CALL_1(iemOp_fdivr_stN, bRm);
            IEM_NOT_REACHED_DEFAULT_CASE_RET();
        }
    }
    else
    {
        switch (IEM_GET_MODRM_REG_8(bRm))
        {
            case 0: return FNIEMOP_CALL_1(iemOp_fadd_m32r,  bRm);
            case 1: return FNIEMOP_CALL_1(iemOp_fmul_m32r,  bRm);
            case 2: return FNIEMOP_CALL_1(iemOp_fcom_m32r,  bRm);
            case 3: return FNIEMOP_CALL_1(iemOp_fcomp_m32r, bRm);
            case 4: return FNIEMOP_CALL_1(iemOp_fsub_m32r,  bRm);
            case 5: return FNIEMOP_CALL_1(iemOp_fsubr_m32r, bRm);
            case 6: return FNIEMOP_CALL_1(iemOp_fdiv_m32r,  bRm);
            case 7: return FNIEMOP_CALL_1(iemOp_fdivr_m32r, bRm);
            IEM_NOT_REACHED_DEFAULT_CASE_RET();
        }
    }
}


/** Opcode 0xd9 /0 mem32real
 * @sa  iemOp_fld_m64r */
FNIEMOP_DEF_1(iemOp_fld_m32r, uint8_t, bRm)
{
    IEMOP_MNEMONIC(fld_m32r, "fld m32r");

    IEM_MC_BEGIN(0, 0);
    IEM_MC_LOCAL(RTGCPTR,               GCPtrEffSrc);
    IEM_MC_LOCAL(IEMFPURESULT,          FpuRes);
    IEM_MC_LOCAL(RTFLOAT32U,            r32Val);
    IEM_MC_ARG_LOCAL_REF(PIEMFPURESULT, pFpuRes,    FpuRes, 0);
    IEM_MC_ARG_LOCAL_REF(PCRTFLOAT32U,  pr32Val,    r32Val, 1);

    IEM_MC_CALC_RM_EFF_ADDR(GCPtrEffSrc, bRm, 0);
    IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();

    IEM_MC_MAYBE_RAISE_DEVICE_NOT_AVAILABLE();
    IEM_MC_MAYBE_RAISE_FPU_XCPT();
    IEM_MC_FETCH_MEM_R32(r32Val, pVCpu->iem.s.iEffSeg, GCPtrEffSrc);
    IEM_MC_PREPARE_FPU_USAGE();
    IEM_MC_IF_FPUREG_IS_EMPTY(7) {
        IEM_MC_CALL_FPU_AIMPL_2(iemAImpl_fld_r80_from_r32, pFpuRes, pr32Val);
        IEM_MC_PUSH_FPU_RESULT_MEM_OP(FpuRes, pVCpu->iem.s.iEffSeg, GCPtrEffSrc, pVCpu->iem.s.uFpuOpcode);
    } IEM_MC_ELSE() {
        IEM_MC_FPU_STACK_PUSH_OVERFLOW_MEM_OP(pVCpu->iem.s.iEffSeg, GCPtrEffSrc, pVCpu->iem.s.uFpuOpcode);
    } IEM_MC_ENDIF();
    IEM_MC_ADVANCE_RIP_AND_FINISH();

    IEM_MC_END();
}


/** Opcode 0xd9 !11/2 mem32real */
FNIEMOP_DEF_1(iemOp_fst_m32r, uint8_t, bRm)
{
    IEMOP_MNEMONIC(fst_m32r, "fst m32r");
    IEM_MC_BEGIN(0, 0);
    IEM_MC_LOCAL(RTGCPTR,               GCPtrEffDst);
    IEM_MC_CALC_RM_EFF_ADDR(GCPtrEffDst, bRm, 0);

    IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
    IEM_MC_MAYBE_RAISE_DEVICE_NOT_AVAILABLE();
    IEM_MC_MAYBE_RAISE_FPU_XCPT();
    IEM_MC_PREPARE_FPU_USAGE();

    IEM_MC_LOCAL(uint8_t,               bUnmapInfo);
    IEM_MC_ARG(PRTFLOAT32U,             pr32Dst,            1);
    IEM_MC_MEM_MAP_R32_WO(pr32Dst, bUnmapInfo, pVCpu->iem.s.iEffSeg, GCPtrEffDst);

    IEM_MC_ARG(PCRTFLOAT80U,            pr80Value,          2);
    IEM_MC_IF_FPUREG_NOT_EMPTY_REF_R80(pr80Value, 0) {
        IEM_MC_LOCAL(uint16_t,          u16Fsw);
        IEM_MC_ARG_LOCAL_REF(uint16_t *,pu16Fsw,    u16Fsw, 0);
        IEM_MC_CALL_FPU_AIMPL_3(iemAImpl_fst_r80_to_r32, pu16Fsw, pr32Dst, pr80Value);
        IEM_MC_MEM_COMMIT_AND_UNMAP_FOR_FPU_STORE_WO(bUnmapInfo, u16Fsw);
        IEM_MC_UPDATE_FSW_WITH_MEM_OP(u16Fsw, pVCpu->iem.s.iEffSeg, GCPtrEffDst, pVCpu->iem.s.uFpuOpcode);
    } IEM_MC_ELSE() {
        IEM_MC_IF_FCW_IM() {
            IEM_MC_STORE_MEM_NEG_QNAN_R32_BY_REF(pr32Dst);
            IEM_MC_MEM_COMMIT_AND_UNMAP_WO(bUnmapInfo);
        } IEM_MC_ELSE() {
            IEM_MC_MEM_ROLLBACK_AND_UNMAP_WO(bUnmapInfo);
        } IEM_MC_ENDIF();
        IEM_MC_FPU_STACK_UNDERFLOW_MEM_OP(UINT8_MAX, pVCpu->iem.s.iEffSeg, GCPtrEffDst, pVCpu->iem.s.uFpuOpcode);
    } IEM_MC_ENDIF();
    IEM_MC_ADVANCE_RIP_AND_FINISH();

    IEM_MC_END();
}


/** Opcode 0xd9 !11/3 */
FNIEMOP_DEF_1(iemOp_fstp_m32r, uint8_t, bRm)
{
    IEMOP_MNEMONIC(fstp_m32r, "fstp m32r");
    IEM_MC_BEGIN(0, 0);
    IEM_MC_LOCAL(RTGCPTR,               GCPtrEffDst);
    IEM_MC_CALC_RM_EFF_ADDR(GCPtrEffDst, bRm, 0);

    IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
    IEM_MC_MAYBE_RAISE_DEVICE_NOT_AVAILABLE();
    IEM_MC_MAYBE_RAISE_FPU_XCPT();
    IEM_MC_PREPARE_FPU_USAGE();

    IEM_MC_LOCAL(uint8_t,               bUnmapInfo);
    IEM_MC_ARG(PRTFLOAT32U,             pr32Dst,            1);
    IEM_MC_MEM_MAP_R32_WO(pr32Dst, bUnmapInfo, pVCpu->iem.s.iEffSeg, GCPtrEffDst);

    IEM_MC_ARG(PCRTFLOAT80U,            pr80Value,          2);
    IEM_MC_IF_FPUREG_NOT_EMPTY_REF_R80(pr80Value, 0) {
        IEM_MC_LOCAL(uint16_t,          u16Fsw);
        IEM_MC_ARG_LOCAL_REF(uint16_t *,pu16Fsw,    u16Fsw, 0);
        IEM_MC_CALL_FPU_AIMPL_3(iemAImpl_fst_r80_to_r32, pu16Fsw, pr32Dst, pr80Value);
        IEM_MC_MEM_COMMIT_AND_UNMAP_FOR_FPU_STORE_WO(bUnmapInfo, u16Fsw);
        IEM_MC_UPDATE_FSW_WITH_MEM_OP_THEN_POP(u16Fsw, pVCpu->iem.s.iEffSeg, GCPtrEffDst, pVCpu->iem.s.uFpuOpcode);
    } IEM_MC_ELSE() {
        IEM_MC_IF_FCW_IM() {
            IEM_MC_STORE_MEM_NEG_QNAN_R32_BY_REF(pr32Dst);
            IEM_MC_MEM_COMMIT_AND_UNMAP_WO(bUnmapInfo);
        } IEM_MC_ELSE() {
            IEM_MC_MEM_ROLLBACK_AND_UNMAP_WO(bUnmapInfo);
        } IEM_MC_ENDIF();
        IEM_MC_FPU_STACK_UNDERFLOW_MEM_OP_THEN_POP(UINT8_MAX, pVCpu->iem.s.iEffSeg, GCPtrEffDst, pVCpu->iem.s.uFpuOpcode);
    } IEM_MC_ENDIF();
    IEM_MC_ADVANCE_RIP_AND_FINISH();

    IEM_MC_END();
}


/** Opcode 0xd9 !11/4 */
FNIEMOP_DEF_1(iemOp_fldenv, uint8_t, bRm)
{
    IEMOP_MNEMONIC(fldenv, "fldenv m14/28byte");
    IEM_MC_BEGIN(0, 0);
    IEM_MC_ARG(RTGCPTR,                 GCPtrEffSrc,                                    2);
    IEM_MC_CALC_RM_EFF_ADDR(GCPtrEffSrc, bRm, 0);

    IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
    IEM_MC_MAYBE_RAISE_DEVICE_NOT_AVAILABLE();
    IEM_MC_ACTUALIZE_FPU_STATE_FOR_CHANGE();

    IEM_MC_ARG_CONST(IEMMODE,           enmEffOpSize, /*=*/ pVCpu->iem.s.enmEffOpSize,  0);
    IEM_MC_ARG_CONST(uint8_t,           iEffSeg,      /*=*/ pVCpu->iem.s.iEffSeg,       1);
    IEM_MC_CALL_CIMPL_3(IEM_CIMPL_F_FPU, RT_BIT_64(kIemNativeGstReg_FpuFcw),
                        iemCImpl_fldenv, enmEffOpSize, iEffSeg, GCPtrEffSrc);
    IEM_MC_END();
}


/** Opcode 0xd9 !11/5 */
FNIEMOP_DEF_1(iemOp_fldcw, uint8_t, bRm)
{
    IEMOP_MNEMONIC(fldcw_m2byte, "fldcw m2byte");
    IEM_MC_BEGIN(0, 0);
    IEM_MC_LOCAL(RTGCPTR,               GCPtrEffSrc);
    IEM_MC_CALC_RM_EFF_ADDR(GCPtrEffSrc, bRm, 0);

    IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
    IEM_MC_MAYBE_RAISE_DEVICE_NOT_AVAILABLE();
    IEM_MC_ACTUALIZE_FPU_STATE_FOR_CHANGE();

    IEM_MC_ARG(uint16_t,                u16Fsw,                                         0);
    IEM_MC_FETCH_MEM_U16(u16Fsw, pVCpu->iem.s.iEffSeg, GCPtrEffSrc);

    IEM_MC_CALL_CIMPL_1(IEM_CIMPL_F_FPU, RT_BIT_64(kIemNativeGstReg_FpuFcw),
                        iemCImpl_fldcw, u16Fsw);
    IEM_MC_END();
}


/** Opcode 0xd9 !11/6 */
FNIEMOP_DEF_1(iemOp_fnstenv, uint8_t, bRm)
{
    IEMOP_MNEMONIC(fstenv, "fstenv m14/m28byte");
    IEM_MC_BEGIN(0, 0);
    IEM_MC_ARG(RTGCPTR,                 GCPtrEffDst,                                    2);
    IEM_MC_CALC_RM_EFF_ADDR(GCPtrEffDst, bRm, 0);

    IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
    IEM_MC_MAYBE_RAISE_DEVICE_NOT_AVAILABLE();
    IEM_MC_ACTUALIZE_FPU_STATE_FOR_READ();

    IEM_MC_ARG_CONST(IEMMODE,           enmEffOpSize, /*=*/ pVCpu->iem.s.enmEffOpSize,  0);
    IEM_MC_ARG_CONST(uint8_t,           iEffSeg,      /*=*/ pVCpu->iem.s.iEffSeg,       1);
    IEM_MC_CALL_CIMPL_3(IEM_CIMPL_F_FPU, RT_BIT_64(kIemNativeGstReg_FpuFcw) | RT_BIT_64(kIemNativeGstReg_FpuFsw),
                        iemCImpl_fnstenv, enmEffOpSize, iEffSeg, GCPtrEffDst);
    IEM_MC_END();
}


/** Opcode 0xd9 !11/7 */
FNIEMOP_DEF_1(iemOp_fnstcw, uint8_t, bRm)
{
    IEMOP_MNEMONIC(fnstcw_m2byte, "fnstcw m2byte");
    IEM_MC_BEGIN(0, 0);
    IEM_MC_LOCAL(RTGCPTR,               GCPtrEffDst);
    IEM_MC_LOCAL(uint16_t,              u16Fcw);
    IEM_MC_CALC_RM_EFF_ADDR(GCPtrEffDst, bRm, 0);
    IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
    IEM_MC_MAYBE_RAISE_DEVICE_NOT_AVAILABLE();
    IEM_MC_ACTUALIZE_FPU_STATE_FOR_READ();
    IEM_MC_FETCH_FCW(u16Fcw);
    IEM_MC_STORE_MEM_U16(pVCpu->iem.s.iEffSeg, GCPtrEffDst, u16Fcw);
    IEM_MC_ADVANCE_RIP_AND_FINISH(); /* C0-C3 are documented as undefined, we leave them unmodified. */
    IEM_MC_END();
}


/** Opcode 0xd9 0xd0, 0xd9 0xd8-0xdf, ++?.  */
FNIEMOP_DEF(iemOp_fnop)
{
    IEMOP_MNEMONIC(fnop, "fnop");
    IEM_MC_BEGIN(0, 0);
    IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
    IEM_MC_MAYBE_RAISE_DEVICE_NOT_AVAILABLE();
    IEM_MC_MAYBE_RAISE_FPU_XCPT();
    IEM_MC_ACTUALIZE_FPU_STATE_FOR_CHANGE();
    /** @todo Testcase: looks like FNOP leaves FOP alone but updates FPUIP. Could be
     *        intel optimizations. Investigate. */
    IEM_MC_UPDATE_FPU_OPCODE_IP(pVCpu->iem.s.uFpuOpcode);
    IEM_MC_ADVANCE_RIP_AND_FINISH(); /* C0-C3 are documented as undefined, we leave them unmodified. */
    IEM_MC_END();
}


/** Opcode 0xd9 11/0 stN */
FNIEMOP_DEF_1(iemOp_fld_stN, uint8_t, bRm)
{
    IEMOP_MNEMONIC(fld_stN, "fld stN");
    /** @todo Testcase: Check if this raises \#MF?  Intel mentioned it not. AMD
     *        indicates that it does. */
    IEM_MC_BEGIN(0, 0);
    IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
    IEM_MC_LOCAL(PCRTFLOAT80U,          pr80Value);
    IEM_MC_LOCAL(IEMFPURESULT,          FpuRes);
    IEM_MC_MAYBE_RAISE_DEVICE_NOT_AVAILABLE();
    IEM_MC_MAYBE_RAISE_FPU_XCPT();

    IEM_MC_PREPARE_FPU_USAGE();
    IEM_MC_IF_FPUREG_NOT_EMPTY_REF_R80(pr80Value, IEM_GET_MODRM_RM_8(bRm)) {
        IEM_MC_SET_FPU_RESULT(FpuRes, 0 /*FSW*/, pr80Value);
        IEM_MC_PUSH_FPU_RESULT(FpuRes, pVCpu->iem.s.uFpuOpcode);
    } IEM_MC_ELSE() {
        IEM_MC_FPU_STACK_PUSH_UNDERFLOW(pVCpu->iem.s.uFpuOpcode);
    } IEM_MC_ENDIF();

    IEM_MC_ADVANCE_RIP_AND_FINISH();
    IEM_MC_END();
}


/** Opcode 0xd9 11/3 stN */
FNIEMOP_DEF_1(iemOp_fxch_stN, uint8_t, bRm)
{
    IEMOP_MNEMONIC(fxch_stN, "fxch stN");
    /** @todo Testcase: Check if this raises \#MF?  Intel mentioned it not. AMD
     *        indicates that it does. */
    IEM_MC_BEGIN(0, 0);
    IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
    IEM_MC_LOCAL(PCRTFLOAT80U,          pr80Value1);
    IEM_MC_LOCAL(PCRTFLOAT80U,          pr80Value2);
    IEM_MC_LOCAL(IEMFPURESULT,          FpuRes);
    IEM_MC_ARG_CONST(uint8_t,           iStReg, /*=*/ IEM_GET_MODRM_RM_8(bRm), 0);
    IEM_MC_ARG_CONST(uint16_t,          uFpuOpcode, /*=*/ pVCpu->iem.s.uFpuOpcode, 1);
    IEM_MC_MAYBE_RAISE_DEVICE_NOT_AVAILABLE();
    IEM_MC_MAYBE_RAISE_FPU_XCPT();

    IEM_MC_PREPARE_FPU_USAGE();
    IEM_MC_IF_TWO_FPUREGS_NOT_EMPTY_REF_R80(pr80Value1, 0, pr80Value2, IEM_GET_MODRM_RM_8(bRm)) {
        IEM_MC_SET_FPU_RESULT(FpuRes, X86_FSW_C1, pr80Value2);
        IEM_MC_STORE_FPUREG_R80_SRC_REF(IEM_GET_MODRM_RM_8(bRm), pr80Value1);
        IEM_MC_STORE_FPU_RESULT(FpuRes, 0, pVCpu->iem.s.uFpuOpcode);
    } IEM_MC_ELSE() {
        IEM_MC_CALL_CIMPL_2(IEM_CIMPL_F_FPU, 0, iemCImpl_fxch_underflow, iStReg, uFpuOpcode);
    } IEM_MC_ENDIF();

    IEM_MC_ADVANCE_RIP_AND_FINISH();
    IEM_MC_END();
}


/** Opcode 0xd9 11/4, 0xdd 11/2. */
FNIEMOP_DEF_1(iemOp_fstp_stN, uint8_t, bRm)
{
    IEMOP_MNEMONIC(fstp_st0_stN, "fstp st0,stN");

    /* fstp st0, st0 is frequently used as an official 'ffreep st0' sequence. */
    uint8_t const iDstReg = IEM_GET_MODRM_RM_8(bRm);
    if (!iDstReg)
    {
        IEM_MC_BEGIN(0, 0);
        IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
        IEM_MC_LOCAL_CONST(uint16_t,        u16Fsw, /*=*/ 0);
        IEM_MC_MAYBE_RAISE_DEVICE_NOT_AVAILABLE();
        IEM_MC_MAYBE_RAISE_FPU_XCPT();

        IEM_MC_PREPARE_FPU_USAGE();
        IEM_MC_IF_FPUREG_NOT_EMPTY(0) {
            IEM_MC_UPDATE_FSW_THEN_POP(u16Fsw, pVCpu->iem.s.uFpuOpcode);
        } IEM_MC_ELSE() {
            IEM_MC_FPU_STACK_UNDERFLOW_THEN_POP(0, pVCpu->iem.s.uFpuOpcode);
        } IEM_MC_ENDIF();

        IEM_MC_ADVANCE_RIP_AND_FINISH();
        IEM_MC_END();
    }
    else
    {
        IEM_MC_BEGIN(0, 0);
        IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
        IEM_MC_LOCAL(PCRTFLOAT80U,          pr80Value);
        IEM_MC_LOCAL(IEMFPURESULT,          FpuRes);
        IEM_MC_MAYBE_RAISE_DEVICE_NOT_AVAILABLE();
        IEM_MC_MAYBE_RAISE_FPU_XCPT();

        IEM_MC_PREPARE_FPU_USAGE();
        IEM_MC_IF_FPUREG_NOT_EMPTY_REF_R80(pr80Value, 0) {
            IEM_MC_SET_FPU_RESULT(FpuRes, 0 /*FSW*/, pr80Value);
            IEM_MC_STORE_FPU_RESULT_THEN_POP(FpuRes, iDstReg, pVCpu->iem.s.uFpuOpcode);
        } IEM_MC_ELSE() {
            IEM_MC_FPU_STACK_UNDERFLOW_THEN_POP(iDstReg, pVCpu->iem.s.uFpuOpcode);
        } IEM_MC_ENDIF();

        IEM_MC_ADVANCE_RIP_AND_FINISH();
        IEM_MC_END();
    }
}


/**
 * Common worker for FPU instructions working on ST0 and replaces it with the
 * result, i.e. unary operators.
 *
 * @param   pfnAImpl    Pointer to the instruction implementation (assembly).
 */
FNIEMOP_DEF_1(iemOpHlpFpu_st0, PFNIEMAIMPLFPUR80UNARY, pfnAImpl)
{
    IEM_MC_BEGIN(0, 0);
    IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
    IEM_MC_LOCAL(IEMFPURESULT,          FpuRes);
    IEM_MC_ARG_LOCAL_REF(PIEMFPURESULT, pFpuRes,    FpuRes, 0);
    IEM_MC_ARG(PCRTFLOAT80U,            pr80Value,          1);

    IEM_MC_MAYBE_RAISE_DEVICE_NOT_AVAILABLE();
    IEM_MC_MAYBE_RAISE_FPU_XCPT();
    IEM_MC_PREPARE_FPU_USAGE();
    IEM_MC_IF_FPUREG_NOT_EMPTY_REF_R80(pr80Value, 0) {
        IEM_MC_CALL_FPU_AIMPL_2(pfnAImpl, pFpuRes, pr80Value);
        IEM_MC_STORE_FPU_RESULT(FpuRes, 0, pVCpu->iem.s.uFpuOpcode);
    } IEM_MC_ELSE() {
        IEM_MC_FPU_STACK_UNDERFLOW(0, pVCpu->iem.s.uFpuOpcode);
    } IEM_MC_ENDIF();
    IEM_MC_ADVANCE_RIP_AND_FINISH();

    IEM_MC_END();
}


/** Opcode 0xd9 0xe0. */
FNIEMOP_DEF(iemOp_fchs)
{
    IEMOP_MNEMONIC(fchs_st0, "fchs st0");
    return FNIEMOP_CALL_1(iemOpHlpFpu_st0, iemAImpl_fchs_r80);
}


/** Opcode 0xd9 0xe1. */
FNIEMOP_DEF(iemOp_fabs)
{
    IEMOP_MNEMONIC(fabs_st0, "fabs st0");
    return FNIEMOP_CALL_1(iemOpHlpFpu_st0, iemAImpl_fabs_r80);
}


/** Opcode 0xd9 0xe4. */
FNIEMOP_DEF(iemOp_ftst)
{
    IEMOP_MNEMONIC(ftst_st0, "ftst st0");
    IEM_MC_BEGIN(0, 0);
    IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
    IEM_MC_LOCAL(uint16_t,              u16Fsw);
    IEM_MC_ARG_LOCAL_REF(uint16_t *,    pu16Fsw,    u16Fsw, 0);
    IEM_MC_ARG(PCRTFLOAT80U,            pr80Value,          1);

    IEM_MC_MAYBE_RAISE_DEVICE_NOT_AVAILABLE();
    IEM_MC_MAYBE_RAISE_FPU_XCPT();
    IEM_MC_PREPARE_FPU_USAGE();
    IEM_MC_IF_FPUREG_NOT_EMPTY_REF_R80(pr80Value, 0) {
        IEM_MC_CALL_FPU_AIMPL_2(iemAImpl_ftst_r80, pu16Fsw, pr80Value);
        IEM_MC_UPDATE_FSW(u16Fsw, pVCpu->iem.s.uFpuOpcode);
    } IEM_MC_ELSE() {
        IEM_MC_FPU_STACK_UNDERFLOW(UINT8_MAX, pVCpu->iem.s.uFpuOpcode);
    } IEM_MC_ENDIF();
    IEM_MC_ADVANCE_RIP_AND_FINISH();

    IEM_MC_END();
}


/** Opcode 0xd9 0xe5. */
FNIEMOP_DEF(iemOp_fxam)
{
    IEMOP_MNEMONIC(fxam_st0, "fxam st0");
    IEM_MC_BEGIN(0, 0);
    IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
    IEM_MC_LOCAL(uint16_t,              u16Fsw);
    IEM_MC_ARG_LOCAL_REF(uint16_t *,    pu16Fsw,    u16Fsw, 0);
    IEM_MC_ARG(PCRTFLOAT80U,            pr80Value,          1);

    IEM_MC_MAYBE_RAISE_DEVICE_NOT_AVAILABLE();
    IEM_MC_MAYBE_RAISE_FPU_XCPT();
    IEM_MC_PREPARE_FPU_USAGE();
    IEM_MC_REF_FPUREG(pr80Value, 0);
    IEM_MC_CALL_FPU_AIMPL_2(iemAImpl_fxam_r80, pu16Fsw, pr80Value);
    IEM_MC_UPDATE_FSW(u16Fsw, pVCpu->iem.s.uFpuOpcode);
    IEM_MC_ADVANCE_RIP_AND_FINISH();

    IEM_MC_END();
}


/**
 * Common worker for FPU instructions pushing a constant onto the FPU stack.
 *
 * @param   pfnAImpl    Pointer to the instruction implementation (assembly).
 */
FNIEMOP_DEF_1(iemOpHlpFpuPushConstant, PFNIEMAIMPLFPUR80LDCONST, pfnAImpl)
{
    IEM_MC_BEGIN(0, 0);
    IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
    IEM_MC_LOCAL(IEMFPURESULT,          FpuRes);
    IEM_MC_ARG_LOCAL_REF(PIEMFPURESULT, pFpuRes,    FpuRes, 0);

    IEM_MC_MAYBE_RAISE_DEVICE_NOT_AVAILABLE();
    IEM_MC_MAYBE_RAISE_FPU_XCPT();
    IEM_MC_PREPARE_FPU_USAGE();
    IEM_MC_IF_FPUREG_IS_EMPTY(7) {
        IEM_MC_CALL_FPU_AIMPL_1(pfnAImpl, pFpuRes);
        IEM_MC_PUSH_FPU_RESULT(FpuRes, pVCpu->iem.s.uFpuOpcode);
    } IEM_MC_ELSE() {
        IEM_MC_FPU_STACK_PUSH_OVERFLOW(pVCpu->iem.s.uFpuOpcode);
    } IEM_MC_ENDIF();
    IEM_MC_ADVANCE_RIP_AND_FINISH();

    IEM_MC_END();
}


/** Opcode 0xd9 0xe8. */
FNIEMOP_DEF(iemOp_fld1)
{
    IEMOP_MNEMONIC(fld1, "fld1");
    return FNIEMOP_CALL_1(iemOpHlpFpuPushConstant, iemAImpl_fld1);
}


/** Opcode 0xd9 0xe9. */
FNIEMOP_DEF(iemOp_fldl2t)
{
    IEMOP_MNEMONIC(fldl2t, "fldl2t");
    return FNIEMOP_CALL_1(iemOpHlpFpuPushConstant, iemAImpl_fldl2t);
}


/** Opcode 0xd9 0xea. */
FNIEMOP_DEF(iemOp_fldl2e)
{
    IEMOP_MNEMONIC(fldl2e, "fldl2e");
    return FNIEMOP_CALL_1(iemOpHlpFpuPushConstant, iemAImpl_fldl2e);
}

/** Opcode 0xd9 0xeb. */
FNIEMOP_DEF(iemOp_fldpi)
{
    IEMOP_MNEMONIC(fldpi, "fldpi");
    return FNIEMOP_CALL_1(iemOpHlpFpuPushConstant, iemAImpl_fldpi);
}


/** Opcode 0xd9 0xec. */
FNIEMOP_DEF(iemOp_fldlg2)
{
    IEMOP_MNEMONIC(fldlg2, "fldlg2");
    return FNIEMOP_CALL_1(iemOpHlpFpuPushConstant, iemAImpl_fldlg2);
}

/** Opcode 0xd9 0xed. */
FNIEMOP_DEF(iemOp_fldln2)
{
    IEMOP_MNEMONIC(fldln2, "fldln2");
    return FNIEMOP_CALL_1(iemOpHlpFpuPushConstant, iemAImpl_fldln2);
}


/** Opcode 0xd9 0xee. */
FNIEMOP_DEF(iemOp_fldz)
{
    IEMOP_MNEMONIC(fldz, "fldz");
    return FNIEMOP_CALL_1(iemOpHlpFpuPushConstant, iemAImpl_fldz);
}


/** Opcode 0xd9 0xf0.
 *
 * The f2xm1 instruction works on values +1.0 thru -1.0, currently (the range on
 * 287 & 8087 was +0.5 thru 0.0 according to docs).  In addition is does appear
 * to produce proper results for +Inf and -Inf.
 *
 * This is probably usful in the implementation pow() and similar.
 */
FNIEMOP_DEF(iemOp_f2xm1)
{
    IEMOP_MNEMONIC(f2xm1_st0, "f2xm1 st0");
    return FNIEMOP_CALL_1(iemOpHlpFpu_st0, iemAImpl_f2xm1_r80);
}


/**
 * Common worker for FPU instructions working on STn and ST0, storing the result
 * in STn, and popping the stack unless IE, DE or ZE was raised.
 *
 * @param   bRm         Mod R/M byte.
 * @param   pfnAImpl    Pointer to the instruction implementation (assembly).
 */
FNIEMOP_DEF_2(iemOpHlpFpu_stN_st0_pop, uint8_t, bRm, PFNIEMAIMPLFPUR80, pfnAImpl)
{
    IEM_MC_BEGIN(0, 0);
    IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
    IEM_MC_LOCAL(IEMFPURESULT,          FpuRes);
    IEM_MC_ARG_LOCAL_REF(PIEMFPURESULT, pFpuRes,        FpuRes,     0);
    IEM_MC_ARG(PCRTFLOAT80U,            pr80Value1,                 1);
    IEM_MC_ARG(PCRTFLOAT80U,            pr80Value2,                 2);

    IEM_MC_MAYBE_RAISE_DEVICE_NOT_AVAILABLE();
    IEM_MC_MAYBE_RAISE_FPU_XCPT();

    IEM_MC_PREPARE_FPU_USAGE();
    IEM_MC_IF_TWO_FPUREGS_NOT_EMPTY_REF_R80(pr80Value1, IEM_GET_MODRM_RM_8(bRm), pr80Value2, 0) {
        IEM_MC_CALL_FPU_AIMPL_3(pfnAImpl, pFpuRes, pr80Value1, pr80Value2);
        IEM_MC_STORE_FPU_RESULT_THEN_POP(FpuRes, IEM_GET_MODRM_RM_8(bRm), pVCpu->iem.s.uFpuOpcode);
    } IEM_MC_ELSE() {
        IEM_MC_FPU_STACK_UNDERFLOW_THEN_POP(IEM_GET_MODRM_RM_8(bRm), pVCpu->iem.s.uFpuOpcode);
    } IEM_MC_ENDIF();
    IEM_MC_ADVANCE_RIP_AND_FINISH();

    IEM_MC_END();
}


/** Opcode 0xd9 0xf1. */
FNIEMOP_DEF(iemOp_fyl2x)
{
    IEMOP_MNEMONIC(fyl2x_st0, "fyl2x st1,st0");
    return FNIEMOP_CALL_2(iemOpHlpFpu_stN_st0_pop, 1, iemAImpl_fyl2x_r80_by_r80);
}


/**
 * Common worker for FPU instructions working on ST0 and having two outputs, one
 * replacing ST0 and one pushed onto the stack.
 *
 * @param   pfnAImpl    Pointer to the instruction implementation (assembly).
 */
FNIEMOP_DEF_1(iemOpHlpFpuReplace_st0_push, PFNIEMAIMPLFPUR80UNARYTWO, pfnAImpl)
{
    IEM_MC_BEGIN(0, 0);
    IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
    IEM_MC_LOCAL(IEMFPURESULTTWO,           FpuResTwo);
    IEM_MC_ARG_LOCAL_REF(PIEMFPURESULTTWO,  pFpuResTwo, FpuResTwo,  0);
    IEM_MC_ARG(PCRTFLOAT80U,                pr80Value,              1);

    IEM_MC_MAYBE_RAISE_DEVICE_NOT_AVAILABLE();
    IEM_MC_MAYBE_RAISE_FPU_XCPT();
    IEM_MC_PREPARE_FPU_USAGE();
    IEM_MC_IF_FPUREG_NOT_EMPTY_REF_R80(pr80Value, 0) {
        IEM_MC_CALL_FPU_AIMPL_2(pfnAImpl, pFpuResTwo, pr80Value);
        IEM_MC_PUSH_FPU_RESULT_TWO(FpuResTwo, pVCpu->iem.s.uFpuOpcode);
    } IEM_MC_ELSE() {
        IEM_MC_FPU_STACK_PUSH_UNDERFLOW_TWO(pVCpu->iem.s.uFpuOpcode);
    } IEM_MC_ENDIF();
    IEM_MC_ADVANCE_RIP_AND_FINISH();

    IEM_MC_END();
}


/** Opcode 0xd9 0xf2. */
FNIEMOP_DEF(iemOp_fptan)
{
    IEMOP_MNEMONIC(fptan_st0, "fptan st0");
    return FNIEMOP_CALL_1(iemOpHlpFpuReplace_st0_push, iemAImpl_fptan_r80_r80);
}


/** Opcode 0xd9 0xf3. */
FNIEMOP_DEF(iemOp_fpatan)
{
    IEMOP_MNEMONIC(fpatan_st1_st0, "fpatan st1,st0");
    return FNIEMOP_CALL_2(iemOpHlpFpu_stN_st0_pop, 1, iemAImpl_fpatan_r80_by_r80);
}


/** Opcode 0xd9 0xf4. */
FNIEMOP_DEF(iemOp_fxtract)
{
    IEMOP_MNEMONIC(fxtract_st0, "fxtract st0");
    return FNIEMOP_CALL_1(iemOpHlpFpuReplace_st0_push, iemAImpl_fxtract_r80_r80);
}


/** Opcode 0xd9 0xf5. */
FNIEMOP_DEF(iemOp_fprem1)
{
    IEMOP_MNEMONIC(fprem1_st0_st1, "fprem1 st0,st1");
    return FNIEMOP_CALL_2(iemOpHlpFpu_st0_stN, 1, iemAImpl_fprem1_r80_by_r80);
}


/** Opcode 0xd9 0xf6. */
FNIEMOP_DEF(iemOp_fdecstp)
{
    IEMOP_MNEMONIC(fdecstp, "fdecstp");
    /* Note! C0, C2 and C3 are documented as undefined, we clear them. */
    /** @todo Testcase: Check whether FOP, FPUIP and FPUCS are affected by
     *        FINCSTP and FDECSTP. */
    IEM_MC_BEGIN(0, 0);
    IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();

    IEM_MC_MAYBE_RAISE_DEVICE_NOT_AVAILABLE();
    IEM_MC_MAYBE_RAISE_FPU_XCPT();

    IEM_MC_ACTUALIZE_FPU_STATE_FOR_CHANGE();
    IEM_MC_FPU_STACK_DEC_TOP();
    IEM_MC_UPDATE_FSW_CONST(0, pVCpu->iem.s.uFpuOpcode);

    IEM_MC_ADVANCE_RIP_AND_FINISH();
    IEM_MC_END();
}


/** Opcode 0xd9 0xf7. */
FNIEMOP_DEF(iemOp_fincstp)
{
    IEMOP_MNEMONIC(fincstp, "fincstp");
    /* Note! C0, C2 and C3 are documented as undefined, we clear them. */
    /** @todo Testcase: Check whether FOP, FPUIP and FPUCS are affected by
     *        FINCSTP and FDECSTP. */
    IEM_MC_BEGIN(0, 0);
    IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();

    IEM_MC_MAYBE_RAISE_DEVICE_NOT_AVAILABLE();
    IEM_MC_MAYBE_RAISE_FPU_XCPT();

    IEM_MC_ACTUALIZE_FPU_STATE_FOR_CHANGE();
    IEM_MC_FPU_STACK_INC_TOP();
    IEM_MC_UPDATE_FSW_CONST(0, pVCpu->iem.s.uFpuOpcode);

    IEM_MC_ADVANCE_RIP_AND_FINISH();
    IEM_MC_END();
}


/** Opcode 0xd9 0xf8. */
FNIEMOP_DEF(iemOp_fprem)
{
    IEMOP_MNEMONIC(fprem_st0_st1, "fprem st0,st1");
    return FNIEMOP_CALL_2(iemOpHlpFpu_st0_stN, 1, iemAImpl_fprem_r80_by_r80);
}


/** Opcode 0xd9 0xf9. */
FNIEMOP_DEF(iemOp_fyl2xp1)
{
    IEMOP_MNEMONIC(fyl2xp1_st1_st0, "fyl2xp1 st1,st0");
    return FNIEMOP_CALL_2(iemOpHlpFpu_stN_st0_pop, 1, iemAImpl_fyl2xp1_r80_by_r80);
}


/** Opcode 0xd9 0xfa. */
FNIEMOP_DEF(iemOp_fsqrt)
{
    IEMOP_MNEMONIC(fsqrt_st0, "fsqrt st0");
    return FNIEMOP_CALL_1(iemOpHlpFpu_st0, iemAImpl_fsqrt_r80);
}


/** Opcode 0xd9 0xfb. */
FNIEMOP_DEF(iemOp_fsincos)
{
    IEMOP_MNEMONIC(fsincos_st0, "fsincos st0");
    return FNIEMOP_CALL_1(iemOpHlpFpuReplace_st0_push, iemAImpl_fsincos_r80_r80);
}


/** Opcode 0xd9 0xfc. */
FNIEMOP_DEF(iemOp_frndint)
{
    IEMOP_MNEMONIC(frndint_st0, "frndint st0");
    return FNIEMOP_CALL_1(iemOpHlpFpu_st0, iemAImpl_frndint_r80);
}


/** Opcode 0xd9 0xfd. */
FNIEMOP_DEF(iemOp_fscale)
{
    IEMOP_MNEMONIC(fscale_st0_st1, "fscale st0,st1");
    return FNIEMOP_CALL_2(iemOpHlpFpu_st0_stN, 1, iemAImpl_fscale_r80_by_r80);
}


/** Opcode 0xd9 0xfe. */
FNIEMOP_DEF(iemOp_fsin)
{
    IEMOP_MNEMONIC(fsin_st0, "fsin st0");
    return FNIEMOP_CALL_1(iemOpHlpFpu_st0, iemAImpl_fsin_r80);
}


/** Opcode 0xd9 0xff. */
FNIEMOP_DEF(iemOp_fcos)
{
    IEMOP_MNEMONIC(fcos_st0, "fcos st0");
    return FNIEMOP_CALL_1(iemOpHlpFpu_st0, iemAImpl_fcos_r80);
}


/** Used by iemOp_EscF1. */
IEM_STATIC const PFNIEMOP g_apfnEscF1_E0toFF[32] =
{
    /* 0xe0 */  iemOp_fchs,
    /* 0xe1 */  iemOp_fabs,
    /* 0xe2 */  iemOp_Invalid,
    /* 0xe3 */  iemOp_Invalid,
    /* 0xe4 */  iemOp_ftst,
    /* 0xe5 */  iemOp_fxam,
    /* 0xe6 */  iemOp_Invalid,
    /* 0xe7 */  iemOp_Invalid,
    /* 0xe8 */  iemOp_fld1,
    /* 0xe9 */  iemOp_fldl2t,
    /* 0xea */  iemOp_fldl2e,
    /* 0xeb */  iemOp_fldpi,
    /* 0xec */  iemOp_fldlg2,
    /* 0xed */  iemOp_fldln2,
    /* 0xee */  iemOp_fldz,
    /* 0xef */  iemOp_Invalid,
    /* 0xf0 */  iemOp_f2xm1,
    /* 0xf1 */  iemOp_fyl2x,
    /* 0xf2 */  iemOp_fptan,
    /* 0xf3 */  iemOp_fpatan,
    /* 0xf4 */  iemOp_fxtract,
    /* 0xf5 */  iemOp_fprem1,
    /* 0xf6 */  iemOp_fdecstp,
    /* 0xf7 */  iemOp_fincstp,
    /* 0xf8 */  iemOp_fprem,
    /* 0xf9 */  iemOp_fyl2xp1,
    /* 0xfa */  iemOp_fsqrt,
    /* 0xfb */  iemOp_fsincos,
    /* 0xfc */  iemOp_frndint,
    /* 0xfd */  iemOp_fscale,
    /* 0xfe */  iemOp_fsin,
    /* 0xff */  iemOp_fcos
};


/**
 * @opcode      0xd9
 */
FNIEMOP_DEF(iemOp_EscF1)
{
    uint8_t bRm; IEM_OPCODE_GET_NEXT_U8(&bRm);
    pVCpu->iem.s.uFpuOpcode = RT_MAKE_U16(bRm, 0xd9 & 0x7);

    if (IEM_IS_MODRM_REG_MODE(bRm))
    {
        switch (IEM_GET_MODRM_REG_8(bRm))
        {
            case 0: return FNIEMOP_CALL_1(iemOp_fld_stN, bRm);
            case 1: return FNIEMOP_CALL_1(iemOp_fxch_stN, bRm);
            case 2:
                if (bRm == 0xd0)
                    return FNIEMOP_CALL(iemOp_fnop);
                IEMOP_RAISE_INVALID_OPCODE_RET();
            case 3: return FNIEMOP_CALL_1(iemOp_fstp_stN, bRm); /* Reserved. Intel behavior seems to be FSTP ST(i) though. */
            case 4:
            case 5:
            case 6:
            case 7:
                Assert((unsigned)bRm - 0xe0U < RT_ELEMENTS(g_apfnEscF1_E0toFF));
                return FNIEMOP_CALL(g_apfnEscF1_E0toFF[bRm - 0xe0]);
            IEM_NOT_REACHED_DEFAULT_CASE_RET();
        }
    }
    else
    {
        switch (IEM_GET_MODRM_REG_8(bRm))
        {
            case 0: return FNIEMOP_CALL_1(iemOp_fld_m32r,  bRm);
            case 1: IEMOP_RAISE_INVALID_OPCODE_RET();
            case 2: return FNIEMOP_CALL_1(iemOp_fst_m32r,  bRm);
            case 3: return FNIEMOP_CALL_1(iemOp_fstp_m32r, bRm);
            case 4: return FNIEMOP_CALL_1(iemOp_fldenv,    bRm);
            case 5: return FNIEMOP_CALL_1(iemOp_fldcw,     bRm);
            case 6: return FNIEMOP_CALL_1(iemOp_fnstenv,    bRm);
            case 7: return FNIEMOP_CALL_1(iemOp_fnstcw,     bRm);
            IEM_NOT_REACHED_DEFAULT_CASE_RET();
        }
    }
}


/** Opcode 0xda 11/0. */
FNIEMOP_DEF_1(iemOp_fcmovb_stN,  uint8_t, bRm)
{
    IEMOP_MNEMONIC(fcmovb_st0_stN, "fcmovb st0,stN");
    IEM_MC_BEGIN(0, 0);
    IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
    IEM_MC_LOCAL(PCRTFLOAT80U,      pr80ValueN);

    IEM_MC_MAYBE_RAISE_DEVICE_NOT_AVAILABLE();
    IEM_MC_MAYBE_RAISE_FPU_XCPT();

    IEM_MC_PREPARE_FPU_USAGE();
    IEM_MC_IF_TWO_FPUREGS_NOT_EMPTY_REF_R80_FIRST(pr80ValueN, IEM_GET_MODRM_RM_8(bRm), 0) {
        IEM_MC_IF_EFL_BIT_SET(X86_EFL_CF) {
            IEM_MC_STORE_FPUREG_R80_SRC_REF(0, pr80ValueN);
        } IEM_MC_ENDIF();
        IEM_MC_UPDATE_FPU_OPCODE_IP(pVCpu->iem.s.uFpuOpcode);
    } IEM_MC_ELSE() {
        IEM_MC_FPU_STACK_UNDERFLOW(0, pVCpu->iem.s.uFpuOpcode);
    } IEM_MC_ENDIF();
    IEM_MC_ADVANCE_RIP_AND_FINISH();

    IEM_MC_END();
}


/** Opcode 0xda 11/1. */
FNIEMOP_DEF_1(iemOp_fcmove_stN,  uint8_t, bRm)
{
    IEMOP_MNEMONIC(fcmove_st0_stN, "fcmove st0,stN");
    IEM_MC_BEGIN(0, 0);
    IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
    IEM_MC_LOCAL(PCRTFLOAT80U,      pr80ValueN);

    IEM_MC_MAYBE_RAISE_DEVICE_NOT_AVAILABLE();
    IEM_MC_MAYBE_RAISE_FPU_XCPT();

    IEM_MC_PREPARE_FPU_USAGE();
    IEM_MC_IF_TWO_FPUREGS_NOT_EMPTY_REF_R80_FIRST(pr80ValueN, IEM_GET_MODRM_RM_8(bRm), 0) {
        IEM_MC_IF_EFL_BIT_SET(X86_EFL_ZF) {
            IEM_MC_STORE_FPUREG_R80_SRC_REF(0, pr80ValueN);
        } IEM_MC_ENDIF();
        IEM_MC_UPDATE_FPU_OPCODE_IP(pVCpu->iem.s.uFpuOpcode);
    } IEM_MC_ELSE() {
        IEM_MC_FPU_STACK_UNDERFLOW(0, pVCpu->iem.s.uFpuOpcode);
    } IEM_MC_ENDIF();
    IEM_MC_ADVANCE_RIP_AND_FINISH();

    IEM_MC_END();
}


/** Opcode 0xda 11/2. */
FNIEMOP_DEF_1(iemOp_fcmovbe_stN, uint8_t, bRm)
{
    IEMOP_MNEMONIC(fcmovbe_st0_stN, "fcmovbe st0,stN");
    IEM_MC_BEGIN(0, 0);
    IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
    IEM_MC_LOCAL(PCRTFLOAT80U,      pr80ValueN);

    IEM_MC_MAYBE_RAISE_DEVICE_NOT_AVAILABLE();
    IEM_MC_MAYBE_RAISE_FPU_XCPT();

    IEM_MC_PREPARE_FPU_USAGE();
    IEM_MC_IF_TWO_FPUREGS_NOT_EMPTY_REF_R80_FIRST(pr80ValueN, IEM_GET_MODRM_RM_8(bRm), 0) {
        IEM_MC_IF_EFL_ANY_BITS_SET(X86_EFL_CF | X86_EFL_ZF) {
            IEM_MC_STORE_FPUREG_R80_SRC_REF(0, pr80ValueN);
        } IEM_MC_ENDIF();
        IEM_MC_UPDATE_FPU_OPCODE_IP(pVCpu->iem.s.uFpuOpcode);
    } IEM_MC_ELSE() {
        IEM_MC_FPU_STACK_UNDERFLOW(0, pVCpu->iem.s.uFpuOpcode);
    } IEM_MC_ENDIF();
    IEM_MC_ADVANCE_RIP_AND_FINISH();

    IEM_MC_END();
}


/** Opcode 0xda 11/3. */
FNIEMOP_DEF_1(iemOp_fcmovu_stN,  uint8_t, bRm)
{
    IEMOP_MNEMONIC(fcmovu_st0_stN, "fcmovu st0,stN");
    IEM_MC_BEGIN(0, 0);
    IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
    IEM_MC_LOCAL(PCRTFLOAT80U,      pr80ValueN);

    IEM_MC_MAYBE_RAISE_DEVICE_NOT_AVAILABLE();
    IEM_MC_MAYBE_RAISE_FPU_XCPT();

    IEM_MC_PREPARE_FPU_USAGE();
    IEM_MC_IF_TWO_FPUREGS_NOT_EMPTY_REF_R80_FIRST(pr80ValueN, IEM_GET_MODRM_RM_8(bRm), 0) {
        IEM_MC_IF_EFL_BIT_SET(X86_EFL_PF) {
            IEM_MC_STORE_FPUREG_R80_SRC_REF(0, pr80ValueN);
        } IEM_MC_ENDIF();
        IEM_MC_UPDATE_FPU_OPCODE_IP(pVCpu->iem.s.uFpuOpcode);
    } IEM_MC_ELSE() {
        IEM_MC_FPU_STACK_UNDERFLOW(0, pVCpu->iem.s.uFpuOpcode);
    } IEM_MC_ENDIF();
    IEM_MC_ADVANCE_RIP_AND_FINISH();

    IEM_MC_END();
}


/**
 * Common worker for FPU instructions working on ST0 and ST1, only affecting
 * flags, and popping twice when done.
 *
 * @param   pfnAImpl    Pointer to the instruction implementation (assembly).
 */
FNIEMOP_DEF_1(iemOpHlpFpuNoStore_st0_st1_pop_pop, PFNIEMAIMPLFPUR80FSW, pfnAImpl)
{
    IEM_MC_BEGIN(0, 0);
    IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
    IEM_MC_LOCAL(uint16_t,              u16Fsw);
    IEM_MC_ARG_LOCAL_REF(uint16_t *,    pu16Fsw,        u16Fsw,     0);
    IEM_MC_ARG(PCRTFLOAT80U,            pr80Value1,                 1);
    IEM_MC_ARG(PCRTFLOAT80U,            pr80Value2,                 2);

    IEM_MC_MAYBE_RAISE_DEVICE_NOT_AVAILABLE();
    IEM_MC_MAYBE_RAISE_FPU_XCPT();

    IEM_MC_PREPARE_FPU_USAGE();
    IEM_MC_IF_TWO_FPUREGS_NOT_EMPTY_REF_R80(pr80Value1, 0, pr80Value2, 1) {
        IEM_MC_CALL_FPU_AIMPL_3(pfnAImpl, pu16Fsw, pr80Value1, pr80Value2);
        IEM_MC_UPDATE_FSW_THEN_POP_POP(u16Fsw, pVCpu->iem.s.uFpuOpcode);
    } IEM_MC_ELSE() {
        IEM_MC_FPU_STACK_UNDERFLOW_THEN_POP_POP(pVCpu->iem.s.uFpuOpcode);
    } IEM_MC_ENDIF();
    IEM_MC_ADVANCE_RIP_AND_FINISH();

    IEM_MC_END();
}


/** Opcode 0xda 0xe9. */
FNIEMOP_DEF(iemOp_fucompp)
{
    IEMOP_MNEMONIC(fucompp, "fucompp");
    return FNIEMOP_CALL_1(iemOpHlpFpuNoStore_st0_st1_pop_pop, iemAImpl_fucom_r80_by_r80);
}


/**
 * Common worker for FPU instructions working on ST0 and an m32i, and storing
 * the result in ST0.
 *
 * @param   bRm         Mod R/M byte.
 * @param   pfnAImpl    Pointer to the instruction implementation (assembly).
 */
FNIEMOP_DEF_2(iemOpHlpFpu_st0_m32i, uint8_t, bRm, PFNIEMAIMPLFPUI32, pfnAImpl)
{
    IEM_MC_BEGIN(0, 0);
    IEM_MC_LOCAL(RTGCPTR,                   GCPtrEffSrc);
    IEM_MC_LOCAL(IEMFPURESULT,              FpuRes);
    IEM_MC_LOCAL(int32_t,                   i32Val2);
    IEM_MC_ARG_LOCAL_REF(PIEMFPURESULT,     pFpuRes,        FpuRes,     0);
    IEM_MC_ARG(PCRTFLOAT80U,                pr80Value1,                 1);
    IEM_MC_ARG_LOCAL_REF(int32_t const *,   pi32Val2,       i32Val2,    2);

    IEM_MC_CALC_RM_EFF_ADDR(GCPtrEffSrc, bRm, 0);
    IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();

    IEM_MC_MAYBE_RAISE_DEVICE_NOT_AVAILABLE();
    IEM_MC_MAYBE_RAISE_FPU_XCPT();
    IEM_MC_FETCH_MEM_I32(i32Val2, pVCpu->iem.s.iEffSeg, GCPtrEffSrc);

    IEM_MC_PREPARE_FPU_USAGE();
    IEM_MC_IF_FPUREG_NOT_EMPTY_REF_R80(pr80Value1, 0) {
        IEM_MC_CALL_FPU_AIMPL_3(pfnAImpl, pFpuRes, pr80Value1, pi32Val2);
        IEM_MC_STORE_FPU_RESULT(FpuRes, 0, pVCpu->iem.s.uFpuOpcode);
    } IEM_MC_ELSE() {
        IEM_MC_FPU_STACK_UNDERFLOW(0, pVCpu->iem.s.uFpuOpcode);
    } IEM_MC_ENDIF();
    IEM_MC_ADVANCE_RIP_AND_FINISH();

    IEM_MC_END();
}


/** Opcode 0xda !11/0. */
FNIEMOP_DEF_1(iemOp_fiadd_m32i,  uint8_t, bRm)
{
    IEMOP_MNEMONIC(fiadd_m32i, "fiadd m32i");
    return FNIEMOP_CALL_2(iemOpHlpFpu_st0_m32i, bRm, iemAImpl_fiadd_r80_by_i32);
}


/** Opcode 0xda !11/1. */
FNIEMOP_DEF_1(iemOp_fimul_m32i,  uint8_t, bRm)
{
    IEMOP_MNEMONIC(fimul_m32i, "fimul m32i");
    return FNIEMOP_CALL_2(iemOpHlpFpu_st0_m32i, bRm, iemAImpl_fimul_r80_by_i32);
}


/** Opcode 0xda !11/2. */
FNIEMOP_DEF_1(iemOp_ficom_m32i,  uint8_t, bRm)
{
    IEMOP_MNEMONIC(ficom_st0_m32i, "ficom st0,m32i");

    IEM_MC_BEGIN(0, 0);
    IEM_MC_LOCAL(RTGCPTR,                   GCPtrEffSrc);
    IEM_MC_LOCAL(uint16_t,                  u16Fsw);
    IEM_MC_LOCAL(int32_t,                   i32Val2);
    IEM_MC_ARG_LOCAL_REF(uint16_t *,        pu16Fsw,        u16Fsw,     0);
    IEM_MC_ARG(PCRTFLOAT80U,                pr80Value1,                 1);
    IEM_MC_ARG_LOCAL_REF(int32_t const *,   pi32Val2,       i32Val2,    2);

    IEM_MC_CALC_RM_EFF_ADDR(GCPtrEffSrc, bRm, 0);
    IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();

    IEM_MC_MAYBE_RAISE_DEVICE_NOT_AVAILABLE();
    IEM_MC_MAYBE_RAISE_FPU_XCPT();
    IEM_MC_FETCH_MEM_I32(i32Val2, pVCpu->iem.s.iEffSeg, GCPtrEffSrc);

    IEM_MC_PREPARE_FPU_USAGE();
    IEM_MC_IF_FPUREG_NOT_EMPTY_REF_R80(pr80Value1, 0) {
        IEM_MC_CALL_FPU_AIMPL_3(iemAImpl_ficom_r80_by_i32, pu16Fsw, pr80Value1, pi32Val2);
        IEM_MC_UPDATE_FSW_WITH_MEM_OP(u16Fsw, pVCpu->iem.s.iEffSeg, GCPtrEffSrc, pVCpu->iem.s.uFpuOpcode);
    } IEM_MC_ELSE() {
        IEM_MC_FPU_STACK_UNDERFLOW_MEM_OP(UINT8_MAX, pVCpu->iem.s.iEffSeg, GCPtrEffSrc, pVCpu->iem.s.uFpuOpcode);
    } IEM_MC_ENDIF();
    IEM_MC_ADVANCE_RIP_AND_FINISH();

    IEM_MC_END();
}


/** Opcode 0xda !11/3. */
FNIEMOP_DEF_1(iemOp_ficomp_m32i, uint8_t, bRm)
{
    IEMOP_MNEMONIC(ficomp_st0_m32i, "ficomp st0,m32i");

    IEM_MC_BEGIN(0, 0);
    IEM_MC_LOCAL(RTGCPTR,                   GCPtrEffSrc);
    IEM_MC_LOCAL(uint16_t,                  u16Fsw);
    IEM_MC_LOCAL(int32_t,                   i32Val2);
    IEM_MC_ARG_LOCAL_REF(uint16_t *,        pu16Fsw,        u16Fsw,     0);
    IEM_MC_ARG(PCRTFLOAT80U,                pr80Value1,                 1);
    IEM_MC_ARG_LOCAL_REF(int32_t const *,   pi32Val2,       i32Val2,    2);

    IEM_MC_CALC_RM_EFF_ADDR(GCPtrEffSrc, bRm, 0);
    IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();

    IEM_MC_MAYBE_RAISE_DEVICE_NOT_AVAILABLE();
    IEM_MC_MAYBE_RAISE_FPU_XCPT();
    IEM_MC_FETCH_MEM_I32(i32Val2, pVCpu->iem.s.iEffSeg, GCPtrEffSrc);

    IEM_MC_PREPARE_FPU_USAGE();
    IEM_MC_IF_FPUREG_NOT_EMPTY_REF_R80(pr80Value1, 0) {
        IEM_MC_CALL_FPU_AIMPL_3(iemAImpl_ficom_r80_by_i32, pu16Fsw, pr80Value1, pi32Val2);
        IEM_MC_UPDATE_FSW_WITH_MEM_OP_THEN_POP(u16Fsw, pVCpu->iem.s.iEffSeg, GCPtrEffSrc, pVCpu->iem.s.uFpuOpcode);
    } IEM_MC_ELSE() {
        IEM_MC_FPU_STACK_UNDERFLOW_MEM_OP_THEN_POP(UINT8_MAX, pVCpu->iem.s.iEffSeg, GCPtrEffSrc, pVCpu->iem.s.uFpuOpcode);
    } IEM_MC_ENDIF();
    IEM_MC_ADVANCE_RIP_AND_FINISH();

    IEM_MC_END();
}


/** Opcode 0xda !11/4. */
FNIEMOP_DEF_1(iemOp_fisub_m32i,  uint8_t, bRm)
{
    IEMOP_MNEMONIC(fisub_m32i, "fisub m32i");
    return FNIEMOP_CALL_2(iemOpHlpFpu_st0_m32i, bRm, iemAImpl_fisub_r80_by_i32);
}


/** Opcode 0xda !11/5. */
FNIEMOP_DEF_1(iemOp_fisubr_m32i, uint8_t, bRm)
{
    IEMOP_MNEMONIC(fisubr_m32i, "fisubr m32i");
    return FNIEMOP_CALL_2(iemOpHlpFpu_st0_m32i, bRm, iemAImpl_fisubr_r80_by_i32);
}


/** Opcode 0xda !11/6. */
FNIEMOP_DEF_1(iemOp_fidiv_m32i,  uint8_t, bRm)
{
    IEMOP_MNEMONIC(fidiv_m32i, "fidiv m32i");
    return FNIEMOP_CALL_2(iemOpHlpFpu_st0_m32i, bRm, iemAImpl_fidiv_r80_by_i32);
}


/** Opcode 0xda !11/7. */
FNIEMOP_DEF_1(iemOp_fidivr_m32i, uint8_t, bRm)
{
    IEMOP_MNEMONIC(fidivr_m32i, "fidivr m32i");
    return FNIEMOP_CALL_2(iemOpHlpFpu_st0_m32i, bRm, iemAImpl_fidivr_r80_by_i32);
}


/**
 * @opcode      0xda
 */
FNIEMOP_DEF(iemOp_EscF2)
{
    uint8_t bRm; IEM_OPCODE_GET_NEXT_U8(&bRm);
    pVCpu->iem.s.uFpuOpcode = RT_MAKE_U16(bRm, 0xda & 0x7);
    if (IEM_IS_MODRM_REG_MODE(bRm))
    {
        switch (IEM_GET_MODRM_REG_8(bRm))
        {
            case 0: return FNIEMOP_CALL_1(iemOp_fcmovb_stN, bRm);
            case 1: return FNIEMOP_CALL_1(iemOp_fcmove_stN, bRm);
            case 2: return FNIEMOP_CALL_1(iemOp_fcmovbe_stN, bRm);
            case 3: return FNIEMOP_CALL_1(iemOp_fcmovu_stN, bRm);
            case 4: IEMOP_RAISE_INVALID_OPCODE_RET();
            case 5:
                if (bRm == 0xe9)
                    return FNIEMOP_CALL(iemOp_fucompp);
                IEMOP_RAISE_INVALID_OPCODE_RET();
            case 6: IEMOP_RAISE_INVALID_OPCODE_RET();
            case 7: IEMOP_RAISE_INVALID_OPCODE_RET();
            IEM_NOT_REACHED_DEFAULT_CASE_RET();
        }
    }
    else
    {
        switch (IEM_GET_MODRM_REG_8(bRm))
        {
            case 0: return FNIEMOP_CALL_1(iemOp_fiadd_m32i,  bRm);
            case 1: return FNIEMOP_CALL_1(iemOp_fimul_m32i,  bRm);
            case 2: return FNIEMOP_CALL_1(iemOp_ficom_m32i,  bRm);
            case 3: return FNIEMOP_CALL_1(iemOp_ficomp_m32i, bRm);
            case 4: return FNIEMOP_CALL_1(iemOp_fisub_m32i,  bRm);
            case 5: return FNIEMOP_CALL_1(iemOp_fisubr_m32i, bRm);
            case 6: return FNIEMOP_CALL_1(iemOp_fidiv_m32i,  bRm);
            case 7: return FNIEMOP_CALL_1(iemOp_fidivr_m32i, bRm);
            IEM_NOT_REACHED_DEFAULT_CASE_RET();
        }
    }
}


/** Opcode 0xdb !11/0. */
FNIEMOP_DEF_1(iemOp_fild_m32i, uint8_t, bRm)
{
    IEMOP_MNEMONIC(fild_m32i, "fild m32i");

    IEM_MC_BEGIN(0, 0);
    IEM_MC_LOCAL(RTGCPTR,                   GCPtrEffSrc);
    IEM_MC_LOCAL(IEMFPURESULT,              FpuRes);
    IEM_MC_LOCAL(int32_t,                   i32Val);
    IEM_MC_ARG_LOCAL_REF(PIEMFPURESULT,     pFpuRes,    FpuRes, 0);
    IEM_MC_ARG_LOCAL_REF(int32_t const *,   pi32Val,    i32Val, 1);

    IEM_MC_CALC_RM_EFF_ADDR(GCPtrEffSrc, bRm, 0);
    IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();

    IEM_MC_MAYBE_RAISE_DEVICE_NOT_AVAILABLE();
    IEM_MC_MAYBE_RAISE_FPU_XCPT();
    IEM_MC_FETCH_MEM_I32(i32Val, pVCpu->iem.s.iEffSeg, GCPtrEffSrc);

    IEM_MC_PREPARE_FPU_USAGE();
    IEM_MC_IF_FPUREG_IS_EMPTY(7) {
        IEM_MC_CALL_FPU_AIMPL_2(iemAImpl_fild_r80_from_i32, pFpuRes, pi32Val);
        IEM_MC_PUSH_FPU_RESULT_MEM_OP(FpuRes, pVCpu->iem.s.iEffSeg, GCPtrEffSrc, pVCpu->iem.s.uFpuOpcode);
    } IEM_MC_ELSE() {
        IEM_MC_FPU_STACK_PUSH_OVERFLOW_MEM_OP(pVCpu->iem.s.iEffSeg, GCPtrEffSrc, pVCpu->iem.s.uFpuOpcode);
    } IEM_MC_ENDIF();
    IEM_MC_ADVANCE_RIP_AND_FINISH();

    IEM_MC_END();
}


/** Opcode 0xdb !11/1. */
FNIEMOP_DEF_1(iemOp_fisttp_m32i, uint8_t, bRm)
{
    IEMOP_MNEMONIC(fisttp_m32i, "fisttp m32i");
    IEM_MC_BEGIN(0, 0);
    IEM_MC_LOCAL(RTGCPTR,               GCPtrEffDst);
    IEM_MC_CALC_RM_EFF_ADDR(GCPtrEffDst, bRm, 0);

    IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
    IEM_MC_MAYBE_RAISE_DEVICE_NOT_AVAILABLE();
    IEM_MC_MAYBE_RAISE_FPU_XCPT();
    IEM_MC_PREPARE_FPU_USAGE();

    IEM_MC_LOCAL(uint8_t,               bUnmapInfo);
    IEM_MC_ARG(int32_t *,               pi32Dst,            1);
    IEM_MC_MEM_MAP_I32_WO(pi32Dst, bUnmapInfo, pVCpu->iem.s.iEffSeg, GCPtrEffDst);

    IEM_MC_ARG(PCRTFLOAT80U,            pr80Value,          2);
    IEM_MC_IF_FPUREG_NOT_EMPTY_REF_R80(pr80Value, 0) {
        IEM_MC_LOCAL(uint16_t,          u16Fsw);
        IEM_MC_ARG_LOCAL_REF(uint16_t *,pu16Fsw,    u16Fsw, 0);
        IEM_MC_CALL_FPU_AIMPL_3(iemAImpl_fistt_r80_to_i32, pu16Fsw, pi32Dst, pr80Value);
        IEM_MC_MEM_COMMIT_AND_UNMAP_FOR_FPU_STORE_WO(bUnmapInfo, u16Fsw);
        IEM_MC_UPDATE_FSW_WITH_MEM_OP_THEN_POP(u16Fsw, pVCpu->iem.s.iEffSeg, GCPtrEffDst, pVCpu->iem.s.uFpuOpcode);
    } IEM_MC_ELSE() {
        IEM_MC_IF_FCW_IM() {
            IEM_MC_STORE_MEM_I32_CONST_BY_REF(pi32Dst, INT32_MIN /* (integer indefinite) */);
            IEM_MC_MEM_COMMIT_AND_UNMAP_WO(bUnmapInfo);
        } IEM_MC_ELSE() {
            IEM_MC_MEM_ROLLBACK_AND_UNMAP_WO(bUnmapInfo);
        } IEM_MC_ENDIF();
        IEM_MC_FPU_STACK_UNDERFLOW_MEM_OP_THEN_POP(UINT8_MAX, pVCpu->iem.s.iEffSeg, GCPtrEffDst, pVCpu->iem.s.uFpuOpcode);
    } IEM_MC_ENDIF();
    IEM_MC_ADVANCE_RIP_AND_FINISH();

    IEM_MC_END();
}


/** Opcode 0xdb !11/2. */
FNIEMOP_DEF_1(iemOp_fist_m32i, uint8_t, bRm)
{
    IEMOP_MNEMONIC(fist_m32i, "fist m32i");
    IEM_MC_BEGIN(0, 0);
    IEM_MC_LOCAL(RTGCPTR,               GCPtrEffDst);
    IEM_MC_CALC_RM_EFF_ADDR(GCPtrEffDst, bRm, 0);

    IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
    IEM_MC_MAYBE_RAISE_DEVICE_NOT_AVAILABLE();
    IEM_MC_MAYBE_RAISE_FPU_XCPT();
    IEM_MC_PREPARE_FPU_USAGE();

    IEM_MC_LOCAL(uint8_t,               bUnmapInfo);
    IEM_MC_ARG(int32_t *,               pi32Dst,            1);
    IEM_MC_MEM_MAP_I32_WO(pi32Dst, bUnmapInfo, pVCpu->iem.s.iEffSeg, GCPtrEffDst);

    IEM_MC_ARG(PCRTFLOAT80U,            pr80Value,          2);
    IEM_MC_IF_FPUREG_NOT_EMPTY_REF_R80(pr80Value, 0) {
        IEM_MC_LOCAL(uint16_t,          u16Fsw);
        IEM_MC_ARG_LOCAL_REF(uint16_t *,pu16Fsw,    u16Fsw, 0);
        IEM_MC_CALL_FPU_AIMPL_3(iemAImpl_fist_r80_to_i32, pu16Fsw, pi32Dst, pr80Value);
        IEM_MC_MEM_COMMIT_AND_UNMAP_FOR_FPU_STORE_WO(bUnmapInfo, u16Fsw);
        IEM_MC_UPDATE_FSW_WITH_MEM_OP(u16Fsw, pVCpu->iem.s.iEffSeg, GCPtrEffDst, pVCpu->iem.s.uFpuOpcode);
    } IEM_MC_ELSE() {
        IEM_MC_IF_FCW_IM() {
            IEM_MC_STORE_MEM_I32_CONST_BY_REF(pi32Dst, INT32_MIN /* (integer indefinite) */);
            IEM_MC_MEM_COMMIT_AND_UNMAP_WO(bUnmapInfo);
        } IEM_MC_ELSE() {
            IEM_MC_MEM_ROLLBACK_AND_UNMAP_WO(bUnmapInfo);
        } IEM_MC_ENDIF();
        IEM_MC_FPU_STACK_UNDERFLOW_MEM_OP(UINT8_MAX, pVCpu->iem.s.iEffSeg, GCPtrEffDst, pVCpu->iem.s.uFpuOpcode);
    } IEM_MC_ENDIF();
    IEM_MC_ADVANCE_RIP_AND_FINISH();

    IEM_MC_END();
}


/** Opcode 0xdb !11/3. */
FNIEMOP_DEF_1(iemOp_fistp_m32i, uint8_t, bRm)
{
    IEMOP_MNEMONIC(fistp_m32i, "fistp m32i");
    IEM_MC_BEGIN(0, 0);
    IEM_MC_LOCAL(RTGCPTR,               GCPtrEffDst);
    IEM_MC_CALC_RM_EFF_ADDR(GCPtrEffDst, bRm, 0);

    IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
    IEM_MC_MAYBE_RAISE_DEVICE_NOT_AVAILABLE();
    IEM_MC_MAYBE_RAISE_FPU_XCPT();
    IEM_MC_PREPARE_FPU_USAGE();

    IEM_MC_LOCAL(uint8_t,               bUnmapInfo);
    IEM_MC_ARG(int32_t *,               pi32Dst,            1);
    IEM_MC_MEM_MAP_I32_WO(pi32Dst, bUnmapInfo, pVCpu->iem.s.iEffSeg, GCPtrEffDst);

    IEM_MC_ARG(PCRTFLOAT80U,            pr80Value,          2);
    IEM_MC_IF_FPUREG_NOT_EMPTY_REF_R80(pr80Value, 0) {
        IEM_MC_LOCAL(uint16_t,          u16Fsw);
        IEM_MC_ARG_LOCAL_REF(uint16_t *,pu16Fsw,    u16Fsw, 0);
        IEM_MC_CALL_FPU_AIMPL_3(iemAImpl_fist_r80_to_i32, pu16Fsw, pi32Dst, pr80Value);
        IEM_MC_MEM_COMMIT_AND_UNMAP_FOR_FPU_STORE_WO(bUnmapInfo, u16Fsw);
        IEM_MC_UPDATE_FSW_WITH_MEM_OP_THEN_POP(u16Fsw, pVCpu->iem.s.iEffSeg, GCPtrEffDst, pVCpu->iem.s.uFpuOpcode);
    } IEM_MC_ELSE() {
        IEM_MC_IF_FCW_IM() {
            IEM_MC_STORE_MEM_I32_CONST_BY_REF(pi32Dst, INT32_MIN /* (integer indefinite) */);
            IEM_MC_MEM_COMMIT_AND_UNMAP_WO(bUnmapInfo);
        } IEM_MC_ELSE() {
            IEM_MC_MEM_ROLLBACK_AND_UNMAP_WO(bUnmapInfo);
        } IEM_MC_ENDIF();
        IEM_MC_FPU_STACK_UNDERFLOW_MEM_OP_THEN_POP(UINT8_MAX, pVCpu->iem.s.iEffSeg, GCPtrEffDst, pVCpu->iem.s.uFpuOpcode);
    } IEM_MC_ENDIF();
    IEM_MC_ADVANCE_RIP_AND_FINISH();

    IEM_MC_END();
}


/** Opcode 0xdb !11/5. */
FNIEMOP_DEF_1(iemOp_fld_m80r, uint8_t, bRm)
{
    IEMOP_MNEMONIC(fld_m80r, "fld m80r");

    IEM_MC_BEGIN(0, 0);
    IEM_MC_LOCAL(RTGCPTR,               GCPtrEffSrc);
    IEM_MC_LOCAL(IEMFPURESULT,          FpuRes);
    IEM_MC_LOCAL(RTFLOAT80U,            r80Val);
    IEM_MC_ARG_LOCAL_REF(PIEMFPURESULT, pFpuRes,    FpuRes, 0);
    IEM_MC_ARG_LOCAL_REF(PCRTFLOAT80U,  pr80Val,    r80Val, 1);

    IEM_MC_CALC_RM_EFF_ADDR(GCPtrEffSrc, bRm, 0);
    IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();

    IEM_MC_MAYBE_RAISE_DEVICE_NOT_AVAILABLE();
    IEM_MC_MAYBE_RAISE_FPU_XCPT();
    IEM_MC_FETCH_MEM_R80(r80Val, pVCpu->iem.s.iEffSeg, GCPtrEffSrc);

    IEM_MC_PREPARE_FPU_USAGE();
    IEM_MC_IF_FPUREG_IS_EMPTY(7) {
        IEM_MC_CALL_FPU_AIMPL_2(iemAImpl_fld_r80_from_r80, pFpuRes, pr80Val);
        IEM_MC_PUSH_FPU_RESULT_MEM_OP(FpuRes, pVCpu->iem.s.iEffSeg, GCPtrEffSrc, pVCpu->iem.s.uFpuOpcode);
    } IEM_MC_ELSE() {
        IEM_MC_FPU_STACK_PUSH_OVERFLOW_MEM_OP(pVCpu->iem.s.iEffSeg, GCPtrEffSrc, pVCpu->iem.s.uFpuOpcode);
    } IEM_MC_ENDIF();
    IEM_MC_ADVANCE_RIP_AND_FINISH();

    IEM_MC_END();
}


/** Opcode 0xdb !11/7. */
FNIEMOP_DEF_1(iemOp_fstp_m80r, uint8_t, bRm)
{
    IEMOP_MNEMONIC(fstp_m80r, "fstp m80r");
    IEM_MC_BEGIN(0, 0);
    IEM_MC_LOCAL(RTGCPTR,               GCPtrEffDst);
    IEM_MC_CALC_RM_EFF_ADDR(GCPtrEffDst, bRm, 0);

    IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
    IEM_MC_MAYBE_RAISE_DEVICE_NOT_AVAILABLE();
    IEM_MC_MAYBE_RAISE_FPU_XCPT();
    IEM_MC_PREPARE_FPU_USAGE();

    IEM_MC_LOCAL(uint8_t,               bUnmapInfo);
    IEM_MC_ARG(PRTFLOAT80U,             pr80Dst,            1);
    IEM_MC_MEM_MAP_R80_WO(pr80Dst, bUnmapInfo, pVCpu->iem.s.iEffSeg, GCPtrEffDst);

    IEM_MC_ARG(PCRTFLOAT80U,            pr80Value,          2);
    IEM_MC_IF_FPUREG_NOT_EMPTY_REF_R80(pr80Value, 0) {
        IEM_MC_LOCAL(uint16_t,          u16Fsw);
        IEM_MC_ARG_LOCAL_REF(uint16_t *,pu16Fsw,    u16Fsw, 0);
        IEM_MC_CALL_FPU_AIMPL_3(iemAImpl_fst_r80_to_r80, pu16Fsw, pr80Dst, pr80Value);
        IEM_MC_MEM_COMMIT_AND_UNMAP_FOR_FPU_STORE_WO(bUnmapInfo, u16Fsw);
        IEM_MC_UPDATE_FSW_WITH_MEM_OP_THEN_POP(u16Fsw, pVCpu->iem.s.iEffSeg, GCPtrEffDst, pVCpu->iem.s.uFpuOpcode);
    } IEM_MC_ELSE() {
        IEM_MC_IF_FCW_IM() {
            IEM_MC_STORE_MEM_NEG_QNAN_R80_BY_REF(pr80Dst);
            IEM_MC_MEM_COMMIT_AND_UNMAP_WO(bUnmapInfo);
        } IEM_MC_ELSE() {
            IEM_MC_MEM_ROLLBACK_AND_UNMAP_WO(bUnmapInfo);
        } IEM_MC_ENDIF();
        IEM_MC_FPU_STACK_UNDERFLOW_MEM_OP_THEN_POP(UINT8_MAX, pVCpu->iem.s.iEffSeg, GCPtrEffDst, pVCpu->iem.s.uFpuOpcode);
    } IEM_MC_ENDIF();
    IEM_MC_ADVANCE_RIP_AND_FINISH();

    IEM_MC_END();
}


/** Opcode 0xdb 11/0. */
FNIEMOP_DEF_1(iemOp_fcmovnb_stN,  uint8_t, bRm)
{
    IEMOP_MNEMONIC(fcmovnb_st0_stN, "fcmovnb st0,stN");
    IEM_MC_BEGIN(0, 0);
    IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
    IEM_MC_LOCAL(PCRTFLOAT80U,      pr80ValueN);

    IEM_MC_MAYBE_RAISE_DEVICE_NOT_AVAILABLE();
    IEM_MC_MAYBE_RAISE_FPU_XCPT();

    IEM_MC_PREPARE_FPU_USAGE();
    IEM_MC_IF_TWO_FPUREGS_NOT_EMPTY_REF_R80_FIRST(pr80ValueN, IEM_GET_MODRM_RM_8(bRm), 0) {
        IEM_MC_IF_EFL_BIT_NOT_SET(X86_EFL_CF) {
            IEM_MC_STORE_FPUREG_R80_SRC_REF(0, pr80ValueN);
        } IEM_MC_ENDIF();
        IEM_MC_UPDATE_FPU_OPCODE_IP(pVCpu->iem.s.uFpuOpcode);
    } IEM_MC_ELSE() {
        IEM_MC_FPU_STACK_UNDERFLOW(0, pVCpu->iem.s.uFpuOpcode);
    } IEM_MC_ENDIF();
    IEM_MC_ADVANCE_RIP_AND_FINISH();

    IEM_MC_END();
}


/** Opcode 0xdb 11/1. */
FNIEMOP_DEF_1(iemOp_fcmovne_stN,  uint8_t, bRm)
{
    IEMOP_MNEMONIC(fcmovne_st0_stN, "fcmovne st0,stN");
    IEM_MC_BEGIN(0, 0);
    IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
    IEM_MC_LOCAL(PCRTFLOAT80U,      pr80ValueN);

    IEM_MC_MAYBE_RAISE_DEVICE_NOT_AVAILABLE();
    IEM_MC_MAYBE_RAISE_FPU_XCPT();

    IEM_MC_PREPARE_FPU_USAGE();
    IEM_MC_IF_TWO_FPUREGS_NOT_EMPTY_REF_R80_FIRST(pr80ValueN, IEM_GET_MODRM_RM_8(bRm), 0) {
        IEM_MC_IF_EFL_BIT_NOT_SET(X86_EFL_ZF) {
            IEM_MC_STORE_FPUREG_R80_SRC_REF(0, pr80ValueN);
        } IEM_MC_ENDIF();
        IEM_MC_UPDATE_FPU_OPCODE_IP(pVCpu->iem.s.uFpuOpcode);
    } IEM_MC_ELSE() {
        IEM_MC_FPU_STACK_UNDERFLOW(0, pVCpu->iem.s.uFpuOpcode);
    } IEM_MC_ENDIF();
    IEM_MC_ADVANCE_RIP_AND_FINISH();

    IEM_MC_END();
}


/** Opcode 0xdb 11/2. */
FNIEMOP_DEF_1(iemOp_fcmovnbe_stN, uint8_t, bRm)
{
    IEMOP_MNEMONIC(fcmovnbe_st0_stN, "fcmovnbe st0,stN");
    IEM_MC_BEGIN(0, 0);
    IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
    IEM_MC_LOCAL(PCRTFLOAT80U,      pr80ValueN);

    IEM_MC_MAYBE_RAISE_DEVICE_NOT_AVAILABLE();
    IEM_MC_MAYBE_RAISE_FPU_XCPT();

    IEM_MC_PREPARE_FPU_USAGE();
    IEM_MC_IF_TWO_FPUREGS_NOT_EMPTY_REF_R80_FIRST(pr80ValueN, IEM_GET_MODRM_RM_8(bRm), 0) {
        IEM_MC_IF_EFL_NO_BITS_SET(X86_EFL_CF | X86_EFL_ZF) {
            IEM_MC_STORE_FPUREG_R80_SRC_REF(0, pr80ValueN);
        } IEM_MC_ENDIF();
        IEM_MC_UPDATE_FPU_OPCODE_IP(pVCpu->iem.s.uFpuOpcode);
    } IEM_MC_ELSE() {
        IEM_MC_FPU_STACK_UNDERFLOW(0, pVCpu->iem.s.uFpuOpcode);
    } IEM_MC_ENDIF();
    IEM_MC_ADVANCE_RIP_AND_FINISH();

    IEM_MC_END();
}


/** Opcode 0xdb 11/3. */
FNIEMOP_DEF_1(iemOp_fcmovnu_stN, uint8_t, bRm)
{
    IEMOP_MNEMONIC(fcmovnu_st0_stN, "fcmovnu st0,stN");
    IEM_MC_BEGIN(0, 0);
    IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
    IEM_MC_LOCAL(PCRTFLOAT80U,      pr80ValueN);

    IEM_MC_MAYBE_RAISE_DEVICE_NOT_AVAILABLE();
    IEM_MC_MAYBE_RAISE_FPU_XCPT();

    IEM_MC_PREPARE_FPU_USAGE();
    IEM_MC_IF_TWO_FPUREGS_NOT_EMPTY_REF_R80_FIRST(pr80ValueN, IEM_GET_MODRM_RM_8(bRm), 0) {
        IEM_MC_IF_EFL_BIT_NOT_SET(X86_EFL_PF) {
            IEM_MC_STORE_FPUREG_R80_SRC_REF(0, pr80ValueN);
        } IEM_MC_ENDIF();
        IEM_MC_UPDATE_FPU_OPCODE_IP(pVCpu->iem.s.uFpuOpcode);
    } IEM_MC_ELSE() {
        IEM_MC_FPU_STACK_UNDERFLOW(0, pVCpu->iem.s.uFpuOpcode);
    } IEM_MC_ENDIF();
    IEM_MC_ADVANCE_RIP_AND_FINISH();

    IEM_MC_END();
}


/** Opcode 0xdb 0xe0. */
FNIEMOP_DEF(iemOp_fneni)
{
    IEMOP_MNEMONIC(fneni, "fneni (8087/ign)");
    IEM_MC_BEGIN(0, 0);
    IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
    IEM_MC_MAYBE_RAISE_DEVICE_NOT_AVAILABLE();
    IEM_MC_ADVANCE_RIP_AND_FINISH();
    IEM_MC_END();
}


/** Opcode 0xdb 0xe1. */
FNIEMOP_DEF(iemOp_fndisi)
{
    IEMOP_MNEMONIC(fndisi, "fndisi (8087/ign)");
    IEM_MC_BEGIN(0, 0);
    IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
    IEM_MC_MAYBE_RAISE_DEVICE_NOT_AVAILABLE();
    IEM_MC_ADVANCE_RIP_AND_FINISH();
    IEM_MC_END();
}


/** Opcode 0xdb 0xe2. */
FNIEMOP_DEF(iemOp_fnclex)
{
    IEMOP_MNEMONIC(fnclex, "fnclex");
    IEM_MC_BEGIN(0, 0);
    IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
    IEM_MC_MAYBE_RAISE_DEVICE_NOT_AVAILABLE();
    IEM_MC_ACTUALIZE_FPU_STATE_FOR_CHANGE();
    IEM_MC_CLEAR_FSW_EX();
    IEM_MC_ADVANCE_RIP_AND_FINISH();
    IEM_MC_END();
}


/** Opcode 0xdb 0xe3. */
FNIEMOP_DEF(iemOp_fninit)
{
    IEMOP_MNEMONIC(fninit, "fninit");
    IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
    IEM_MC_DEFER_TO_CIMPL_1_RET(IEM_CIMPL_F_FPU, RT_BIT_64(kIemNativeGstReg_FpuFcw) | RT_BIT_64(kIemNativeGstReg_FpuFsw),
                                iemCImpl_finit, false /*fCheckXcpts*/);
}


/** Opcode 0xdb 0xe4. */
FNIEMOP_DEF(iemOp_fnsetpm)
{
    IEMOP_MNEMONIC(fnsetpm, "fnsetpm (80287/ign)");   /* set protected mode on fpu. */
    IEM_MC_BEGIN(0, 0);
    IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
    IEM_MC_MAYBE_RAISE_DEVICE_NOT_AVAILABLE();
    IEM_MC_ADVANCE_RIP_AND_FINISH();
    IEM_MC_END();
}


/** Opcode 0xdb 0xe5. */
FNIEMOP_DEF(iemOp_frstpm)
{
    IEMOP_MNEMONIC(frstpm, "frstpm (80287XL/ign)"); /* reset pm, back to real mode. */
#if 0 /* #UDs on newer CPUs */
    IEM_MC_BEGIN(0, 0);
    IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
    IEM_MC_MAYBE_RAISE_DEVICE_NOT_AVAILABLE();
    IEM_MC_ADVANCE_RIP_AND_FINISH();
    IEM_MC_END();
    return VINF_SUCCESS;
#else
    IEMOP_RAISE_INVALID_OPCODE_RET();
#endif
}


/** Opcode 0xdb 11/5. */
FNIEMOP_DEF_1(iemOp_fucomi_stN, uint8_t, bRm)
{
    IEMOP_MNEMONIC(fucomi_st0_stN, "fucomi st0,stN");
    IEM_MC_DEFER_TO_CIMPL_3_RET(IEM_CIMPL_F_FPU | IEM_CIMPL_F_STATUS_FLAGS, 0,
                                iemCImpl_fcomi_fucomi, IEM_GET_MODRM_RM_8(bRm), true /*fUCmp*/,
                                0 /*fPop*/ | pVCpu->iem.s.uFpuOpcode);
}


/** Opcode 0xdb 11/6. */
FNIEMOP_DEF_1(iemOp_fcomi_stN,  uint8_t, bRm)
{
    IEMOP_MNEMONIC(fcomi_st0_stN, "fcomi st0,stN");
    IEM_MC_DEFER_TO_CIMPL_3_RET(IEM_CIMPL_F_FPU | IEM_CIMPL_F_STATUS_FLAGS, 0,
                                iemCImpl_fcomi_fucomi, IEM_GET_MODRM_RM_8(bRm), false /*fUCmp*/,
                                false /*fPop*/ | pVCpu->iem.s.uFpuOpcode);
}


/**
 * @opcode      0xdb
 */
FNIEMOP_DEF(iemOp_EscF3)
{
    uint8_t bRm; IEM_OPCODE_GET_NEXT_U8(&bRm);
    pVCpu->iem.s.uFpuOpcode = RT_MAKE_U16(bRm, 0xdb & 0x7);
    if (IEM_IS_MODRM_REG_MODE(bRm))
    {
        switch (IEM_GET_MODRM_REG_8(bRm))
        {
            case 0: return FNIEMOP_CALL_1(iemOp_fcmovnb_stN,  bRm);
            case 1: return FNIEMOP_CALL_1(iemOp_fcmovne_stN,  bRm);
            case 2: return FNIEMOP_CALL_1(iemOp_fcmovnbe_stN, bRm);
            case 3: return FNIEMOP_CALL_1(iemOp_fcmovnu_stN,  bRm);
            case 4:
                switch (bRm)
                {
                    case 0xe0:  return FNIEMOP_CALL(iemOp_fneni);
                    case 0xe1:  return FNIEMOP_CALL(iemOp_fndisi);
                    case 0xe2:  return FNIEMOP_CALL(iemOp_fnclex);
                    case 0xe3:  return FNIEMOP_CALL(iemOp_fninit);
                    case 0xe4:  return FNIEMOP_CALL(iemOp_fnsetpm);
                    case 0xe5:  return FNIEMOP_CALL(iemOp_frstpm);
                    case 0xe6:  IEMOP_RAISE_INVALID_OPCODE_RET();
                    case 0xe7:  IEMOP_RAISE_INVALID_OPCODE_RET();
                    IEM_NOT_REACHED_DEFAULT_CASE_RET();
                }
                break;
            case 5: return FNIEMOP_CALL_1(iemOp_fucomi_stN, bRm);
            case 6: return FNIEMOP_CALL_1(iemOp_fcomi_stN,  bRm);
            case 7: IEMOP_RAISE_INVALID_OPCODE_RET();
            IEM_NOT_REACHED_DEFAULT_CASE_RET();
        }
    }
    else
    {
        switch (IEM_GET_MODRM_REG_8(bRm))
        {
            case 0: return FNIEMOP_CALL_1(iemOp_fild_m32i,  bRm);
            case 1: return FNIEMOP_CALL_1(iemOp_fisttp_m32i,bRm);
            case 2: return FNIEMOP_CALL_1(iemOp_fist_m32i,  bRm);
            case 3: return FNIEMOP_CALL_1(iemOp_fistp_m32i, bRm);
            case 4: IEMOP_RAISE_INVALID_OPCODE_RET();
            case 5: return FNIEMOP_CALL_1(iemOp_fld_m80r,   bRm);
            case 6: IEMOP_RAISE_INVALID_OPCODE_RET();
            case 7: return FNIEMOP_CALL_1(iemOp_fstp_m80r,  bRm);
            IEM_NOT_REACHED_DEFAULT_CASE_RET();
        }
    }
}


/**
 * Common worker for FPU instructions working on STn and ST0, and storing the
 * result in STn unless IE, DE or ZE was raised.
 *
 * @param   bRm         Mod R/M byte.
 * @param   pfnAImpl    Pointer to the instruction implementation (assembly).
 */
FNIEMOP_DEF_2(iemOpHlpFpu_stN_st0, uint8_t, bRm, PFNIEMAIMPLFPUR80, pfnAImpl)
{
    IEM_MC_BEGIN(0, 0);
    IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
    IEM_MC_LOCAL(IEMFPURESULT,          FpuRes);
    IEM_MC_ARG_LOCAL_REF(PIEMFPURESULT, pFpuRes,        FpuRes,     0);
    IEM_MC_ARG(PCRTFLOAT80U,            pr80Value1,                 1);
    IEM_MC_ARG(PCRTFLOAT80U,            pr80Value2,                 2);

    IEM_MC_MAYBE_RAISE_DEVICE_NOT_AVAILABLE();
    IEM_MC_MAYBE_RAISE_FPU_XCPT();

    IEM_MC_PREPARE_FPU_USAGE();
    IEM_MC_IF_TWO_FPUREGS_NOT_EMPTY_REF_R80(pr80Value1, IEM_GET_MODRM_RM_8(bRm), pr80Value2, 0) {
        IEM_MC_CALL_FPU_AIMPL_3(pfnAImpl, pFpuRes, pr80Value1, pr80Value2);
        IEM_MC_STORE_FPU_RESULT(FpuRes, IEM_GET_MODRM_RM_8(bRm), pVCpu->iem.s.uFpuOpcode);
    } IEM_MC_ELSE() {
        IEM_MC_FPU_STACK_UNDERFLOW(IEM_GET_MODRM_RM_8(bRm), pVCpu->iem.s.uFpuOpcode);
    } IEM_MC_ENDIF();
    IEM_MC_ADVANCE_RIP_AND_FINISH();

    IEM_MC_END();
}


/** Opcode 0xdc 11/0. */
FNIEMOP_DEF_1(iemOp_fadd_stN_st0,   uint8_t, bRm)
{
    IEMOP_MNEMONIC(fadd_stN_st0, "fadd stN,st0");
    return FNIEMOP_CALL_2(iemOpHlpFpu_stN_st0, bRm, iemAImpl_fadd_r80_by_r80);
}


/** Opcode 0xdc 11/1. */
FNIEMOP_DEF_1(iemOp_fmul_stN_st0,   uint8_t, bRm)
{
    IEMOP_MNEMONIC(fmul_stN_st0, "fmul stN,st0");
    return FNIEMOP_CALL_2(iemOpHlpFpu_stN_st0, bRm, iemAImpl_fmul_r80_by_r80);
}


/** Opcode 0xdc 11/4. */
FNIEMOP_DEF_1(iemOp_fsubr_stN_st0,  uint8_t, bRm)
{
    IEMOP_MNEMONIC(fsubr_stN_st0, "fsubr stN,st0");
    return FNIEMOP_CALL_2(iemOpHlpFpu_stN_st0, bRm, iemAImpl_fsubr_r80_by_r80);
}


/** Opcode 0xdc 11/5. */
FNIEMOP_DEF_1(iemOp_fsub_stN_st0,   uint8_t, bRm)
{
    IEMOP_MNEMONIC(fsub_stN_st0, "fsub stN,st0");
    return FNIEMOP_CALL_2(iemOpHlpFpu_stN_st0, bRm, iemAImpl_fsub_r80_by_r80);
}


/** Opcode 0xdc 11/6. */
FNIEMOP_DEF_1(iemOp_fdivr_stN_st0,  uint8_t, bRm)
{
    IEMOP_MNEMONIC(fdivr_stN_st0, "fdivr stN,st0");
    return FNIEMOP_CALL_2(iemOpHlpFpu_stN_st0, bRm, iemAImpl_fdivr_r80_by_r80);
}


/** Opcode 0xdc 11/7. */
FNIEMOP_DEF_1(iemOp_fdiv_stN_st0,   uint8_t, bRm)
{
    IEMOP_MNEMONIC(fdiv_stN_st0, "fdiv stN,st0");
    return FNIEMOP_CALL_2(iemOpHlpFpu_stN_st0, bRm, iemAImpl_fdiv_r80_by_r80);
}


/**
 * Common worker for FPU instructions working on ST0 and a 64-bit floating point
 * memory operand, and storing the result in ST0.
 *
 * @param   bRm         Mod R/M byte.
 * @param   pfnImpl     Pointer to the instruction implementation (assembly).
 */
FNIEMOP_DEF_2(iemOpHlpFpu_ST0_m64r, uint8_t, bRm, PFNIEMAIMPLFPUR64, pfnImpl)
{
    IEM_MC_BEGIN(0, 0);
    IEM_MC_LOCAL(RTGCPTR,               GCPtrEffSrc);
    IEM_MC_LOCAL(IEMFPURESULT,          FpuRes);
    IEM_MC_LOCAL(RTFLOAT64U,            r64Factor2);
    IEM_MC_ARG_LOCAL_REF(PIEMFPURESULT, pFpuRes,        FpuRes,     0);
    IEM_MC_ARG(PCRTFLOAT80U,            pr80Factor1,                1);
    IEM_MC_ARG_LOCAL_REF(PRTFLOAT64U,   pr64Factor2,    r64Factor2, 2);

    IEM_MC_CALC_RM_EFF_ADDR(GCPtrEffSrc, bRm, 0);
    IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
    IEM_MC_MAYBE_RAISE_DEVICE_NOT_AVAILABLE();
    IEM_MC_MAYBE_RAISE_FPU_XCPT();

    IEM_MC_FETCH_MEM_R64(r64Factor2, pVCpu->iem.s.iEffSeg, GCPtrEffSrc);
    IEM_MC_PREPARE_FPU_USAGE();
    IEM_MC_IF_FPUREG_NOT_EMPTY_REF_R80(pr80Factor1, 0) {
        IEM_MC_CALL_FPU_AIMPL_3(pfnImpl, pFpuRes, pr80Factor1, pr64Factor2);
        IEM_MC_STORE_FPU_RESULT_MEM_OP(FpuRes, 0, pVCpu->iem.s.iEffSeg, GCPtrEffSrc, pVCpu->iem.s.uFpuOpcode);
    } IEM_MC_ELSE() {
        IEM_MC_FPU_STACK_UNDERFLOW_MEM_OP(0, pVCpu->iem.s.iEffSeg, GCPtrEffSrc, pVCpu->iem.s.uFpuOpcode);
    } IEM_MC_ENDIF();
    IEM_MC_ADVANCE_RIP_AND_FINISH();

    IEM_MC_END();
}


/** Opcode 0xdc !11/0. */
FNIEMOP_DEF_1(iemOp_fadd_m64r,  uint8_t, bRm)
{
    IEMOP_MNEMONIC(fadd_m64r, "fadd m64r");
    return FNIEMOP_CALL_2(iemOpHlpFpu_ST0_m64r, bRm, iemAImpl_fadd_r80_by_r64);
}


/** Opcode 0xdc !11/1. */
FNIEMOP_DEF_1(iemOp_fmul_m64r,  uint8_t, bRm)
{
    IEMOP_MNEMONIC(fmul_m64r, "fmul m64r");
    return FNIEMOP_CALL_2(iemOpHlpFpu_ST0_m64r, bRm, iemAImpl_fmul_r80_by_r64);
}


/** Opcode 0xdc !11/2. */
FNIEMOP_DEF_1(iemOp_fcom_m64r,  uint8_t, bRm)
{
    IEMOP_MNEMONIC(fcom_st0_m64r, "fcom st0,m64r");

    IEM_MC_BEGIN(0, 0);
    IEM_MC_LOCAL(RTGCPTR,               GCPtrEffSrc);
    IEM_MC_LOCAL(uint16_t,              u16Fsw);
    IEM_MC_LOCAL(RTFLOAT64U,            r64Val2);
    IEM_MC_ARG_LOCAL_REF(uint16_t *,    pu16Fsw,        u16Fsw,     0);
    IEM_MC_ARG(PCRTFLOAT80U,            pr80Value1,                 1);
    IEM_MC_ARG_LOCAL_REF(PCRTFLOAT64U,  pr64Val2,       r64Val2,    2);

    IEM_MC_CALC_RM_EFF_ADDR(GCPtrEffSrc, bRm, 0);
    IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();

    IEM_MC_MAYBE_RAISE_DEVICE_NOT_AVAILABLE();
    IEM_MC_MAYBE_RAISE_FPU_XCPT();
    IEM_MC_FETCH_MEM_R64(r64Val2, pVCpu->iem.s.iEffSeg, GCPtrEffSrc);

    IEM_MC_PREPARE_FPU_USAGE();
    IEM_MC_IF_FPUREG_NOT_EMPTY_REF_R80(pr80Value1, 0) {
        IEM_MC_CALL_FPU_AIMPL_3(iemAImpl_fcom_r80_by_r64, pu16Fsw, pr80Value1, pr64Val2);
        IEM_MC_UPDATE_FSW_WITH_MEM_OP(u16Fsw, pVCpu->iem.s.iEffSeg, GCPtrEffSrc, pVCpu->iem.s.uFpuOpcode);
    } IEM_MC_ELSE() {
        IEM_MC_FPU_STACK_UNDERFLOW_MEM_OP(UINT8_MAX, pVCpu->iem.s.iEffSeg, GCPtrEffSrc, pVCpu->iem.s.uFpuOpcode);
    } IEM_MC_ENDIF();
    IEM_MC_ADVANCE_RIP_AND_FINISH();

    IEM_MC_END();
}


/** Opcode 0xdc !11/3. */
FNIEMOP_DEF_1(iemOp_fcomp_m64r, uint8_t, bRm)
{
    IEMOP_MNEMONIC(fcomp_st0_m64r, "fcomp st0,m64r");

    IEM_MC_BEGIN(0, 0);
    IEM_MC_LOCAL(RTGCPTR,               GCPtrEffSrc);
    IEM_MC_LOCAL(uint16_t,              u16Fsw);
    IEM_MC_LOCAL(RTFLOAT64U,            r64Val2);
    IEM_MC_ARG_LOCAL_REF(uint16_t *,    pu16Fsw,        u16Fsw,     0);
    IEM_MC_ARG(PCRTFLOAT80U,            pr80Value1,                 1);
    IEM_MC_ARG_LOCAL_REF(PCRTFLOAT64U,  pr64Val2,       r64Val2,    2);

    IEM_MC_CALC_RM_EFF_ADDR(GCPtrEffSrc, bRm, 0);
    IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();

    IEM_MC_MAYBE_RAISE_DEVICE_NOT_AVAILABLE();
    IEM_MC_MAYBE_RAISE_FPU_XCPT();
    IEM_MC_FETCH_MEM_R64(r64Val2, pVCpu->iem.s.iEffSeg, GCPtrEffSrc);

    IEM_MC_PREPARE_FPU_USAGE();
    IEM_MC_IF_FPUREG_NOT_EMPTY_REF_R80(pr80Value1, 0) {
        IEM_MC_CALL_FPU_AIMPL_3(iemAImpl_fcom_r80_by_r64, pu16Fsw, pr80Value1, pr64Val2);
        IEM_MC_UPDATE_FSW_WITH_MEM_OP_THEN_POP(u16Fsw, pVCpu->iem.s.iEffSeg, GCPtrEffSrc, pVCpu->iem.s.uFpuOpcode);
    } IEM_MC_ELSE() {
        IEM_MC_FPU_STACK_UNDERFLOW_MEM_OP_THEN_POP(UINT8_MAX, pVCpu->iem.s.iEffSeg, GCPtrEffSrc, pVCpu->iem.s.uFpuOpcode);
    } IEM_MC_ENDIF();
    IEM_MC_ADVANCE_RIP_AND_FINISH();

    IEM_MC_END();
}


/** Opcode 0xdc !11/4. */
FNIEMOP_DEF_1(iemOp_fsub_m64r,  uint8_t, bRm)
{
    IEMOP_MNEMONIC(fsub_m64r, "fsub m64r");
    return FNIEMOP_CALL_2(iemOpHlpFpu_ST0_m64r, bRm, iemAImpl_fsub_r80_by_r64);
}


/** Opcode 0xdc !11/5. */
FNIEMOP_DEF_1(iemOp_fsubr_m64r, uint8_t, bRm)
{
    IEMOP_MNEMONIC(fsubr_m64r, "fsubr m64r");
    return FNIEMOP_CALL_2(iemOpHlpFpu_ST0_m64r, bRm, iemAImpl_fsubr_r80_by_r64);
}


/** Opcode 0xdc !11/6. */
FNIEMOP_DEF_1(iemOp_fdiv_m64r,  uint8_t, bRm)
{
    IEMOP_MNEMONIC(fdiv_m64r, "fdiv m64r");
    return FNIEMOP_CALL_2(iemOpHlpFpu_ST0_m64r, bRm, iemAImpl_fdiv_r80_by_r64);
}


/** Opcode 0xdc !11/7. */
FNIEMOP_DEF_1(iemOp_fdivr_m64r, uint8_t, bRm)
{
    IEMOP_MNEMONIC(fdivr_m64r, "fdivr m64r");
    return FNIEMOP_CALL_2(iemOpHlpFpu_ST0_m64r, bRm, iemAImpl_fdivr_r80_by_r64);
}


/**
 * @opcode      0xdc
 */
FNIEMOP_DEF(iemOp_EscF4)
{
    uint8_t bRm; IEM_OPCODE_GET_NEXT_U8(&bRm);
    pVCpu->iem.s.uFpuOpcode = RT_MAKE_U16(bRm, 0xdc & 0x7);
    if (IEM_IS_MODRM_REG_MODE(bRm))
    {
        switch (IEM_GET_MODRM_REG_8(bRm))
        {
            case 0: return FNIEMOP_CALL_1(iemOp_fadd_stN_st0,  bRm);
            case 1: return FNIEMOP_CALL_1(iemOp_fmul_stN_st0,  bRm);
            case 2: return FNIEMOP_CALL_1(iemOp_fcom_stN,      bRm); /* Marked reserved, intel behavior is that of FCOM ST(i). */
            case 3: return FNIEMOP_CALL_1(iemOp_fcomp_stN,     bRm); /* Marked reserved, intel behavior is that of FCOMP ST(i). */
            case 4: return FNIEMOP_CALL_1(iemOp_fsubr_stN_st0, bRm);
            case 5: return FNIEMOP_CALL_1(iemOp_fsub_stN_st0,  bRm);
            case 6: return FNIEMOP_CALL_1(iemOp_fdivr_stN_st0, bRm);
            case 7: return FNIEMOP_CALL_1(iemOp_fdiv_stN_st0,  bRm);
            IEM_NOT_REACHED_DEFAULT_CASE_RET();
        }
    }
    else
    {
        switch (IEM_GET_MODRM_REG_8(bRm))
        {
            case 0: return FNIEMOP_CALL_1(iemOp_fadd_m64r,  bRm);
            case 1: return FNIEMOP_CALL_1(iemOp_fmul_m64r,  bRm);
            case 2: return FNIEMOP_CALL_1(iemOp_fcom_m64r,  bRm);
            case 3: return FNIEMOP_CALL_1(iemOp_fcomp_m64r, bRm);
            case 4: return FNIEMOP_CALL_1(iemOp_fsub_m64r,  bRm);
            case 5: return FNIEMOP_CALL_1(iemOp_fsubr_m64r, bRm);
            case 6: return FNIEMOP_CALL_1(iemOp_fdiv_m64r,  bRm);
            case 7: return FNIEMOP_CALL_1(iemOp_fdivr_m64r, bRm);
            IEM_NOT_REACHED_DEFAULT_CASE_RET();
        }
    }
}


/** Opcode 0xdd !11/0.
 * @sa iemOp_fld_m32r */
FNIEMOP_DEF_1(iemOp_fld_m64r,    uint8_t, bRm)
{
    IEMOP_MNEMONIC(fld_m64r, "fld m64r");

    IEM_MC_BEGIN(0, 0);
    IEM_MC_LOCAL(RTGCPTR,               GCPtrEffSrc);
    IEM_MC_LOCAL(IEMFPURESULT,          FpuRes);
    IEM_MC_LOCAL(RTFLOAT64U,            r64Val);
    IEM_MC_ARG_LOCAL_REF(PIEMFPURESULT, pFpuRes,    FpuRes, 0);
    IEM_MC_ARG_LOCAL_REF(PCRTFLOAT64U,  pr64Val,    r64Val, 1);

    IEM_MC_CALC_RM_EFF_ADDR(GCPtrEffSrc, bRm, 0);
    IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
    IEM_MC_MAYBE_RAISE_DEVICE_NOT_AVAILABLE();
    IEM_MC_MAYBE_RAISE_FPU_XCPT();

    IEM_MC_FETCH_MEM_R64(r64Val, pVCpu->iem.s.iEffSeg, GCPtrEffSrc);
    IEM_MC_PREPARE_FPU_USAGE();
    IEM_MC_IF_FPUREG_IS_EMPTY(7) {
        IEM_MC_CALL_FPU_AIMPL_2(iemAImpl_fld_r80_from_r64, pFpuRes, pr64Val);
        IEM_MC_PUSH_FPU_RESULT_MEM_OP(FpuRes, pVCpu->iem.s.iEffSeg, GCPtrEffSrc, pVCpu->iem.s.uFpuOpcode);
    } IEM_MC_ELSE() {
        IEM_MC_FPU_STACK_PUSH_OVERFLOW_MEM_OP(pVCpu->iem.s.iEffSeg, GCPtrEffSrc, pVCpu->iem.s.uFpuOpcode);
    } IEM_MC_ENDIF();
    IEM_MC_ADVANCE_RIP_AND_FINISH();

    IEM_MC_END();
}


/** Opcode 0xdd !11/0. */
FNIEMOP_DEF_1(iemOp_fisttp_m64i, uint8_t, bRm)
{
    IEMOP_MNEMONIC(fisttp_m64i, "fisttp m64i");
    IEM_MC_BEGIN(0, 0);
    IEM_MC_LOCAL(RTGCPTR,               GCPtrEffDst);
    IEM_MC_CALC_RM_EFF_ADDR(GCPtrEffDst, bRm, 0);

    IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
    IEM_MC_MAYBE_RAISE_DEVICE_NOT_AVAILABLE();
    IEM_MC_MAYBE_RAISE_FPU_XCPT();
    IEM_MC_PREPARE_FPU_USAGE();

    IEM_MC_LOCAL(uint8_t,               bUnmapInfo);
    IEM_MC_ARG(int64_t *,               pi64Dst,            1);
    IEM_MC_MEM_MAP_I64_WO(pi64Dst, bUnmapInfo, pVCpu->iem.s.iEffSeg, GCPtrEffDst);

    IEM_MC_ARG(PCRTFLOAT80U,            pr80Value,          2);
    IEM_MC_IF_FPUREG_NOT_EMPTY_REF_R80(pr80Value, 0) {
        IEM_MC_LOCAL(uint16_t,          u16Fsw);
        IEM_MC_ARG_LOCAL_REF(uint16_t *,pu16Fsw,    u16Fsw, 0);
        IEM_MC_CALL_FPU_AIMPL_3(iemAImpl_fistt_r80_to_i64, pu16Fsw, pi64Dst, pr80Value);
        IEM_MC_MEM_COMMIT_AND_UNMAP_FOR_FPU_STORE_WO(bUnmapInfo, u16Fsw);
        IEM_MC_UPDATE_FSW_WITH_MEM_OP_THEN_POP(u16Fsw, pVCpu->iem.s.iEffSeg, GCPtrEffDst, pVCpu->iem.s.uFpuOpcode);
    } IEM_MC_ELSE() {
        IEM_MC_IF_FCW_IM() {
            IEM_MC_STORE_MEM_I64_CONST_BY_REF(pi64Dst, INT64_MIN /* (integer indefinite) */);
            IEM_MC_MEM_COMMIT_AND_UNMAP_WO(bUnmapInfo);
        } IEM_MC_ELSE() {
            IEM_MC_MEM_ROLLBACK_AND_UNMAP_WO(bUnmapInfo);
        } IEM_MC_ENDIF();
        IEM_MC_FPU_STACK_UNDERFLOW_MEM_OP_THEN_POP(UINT8_MAX, pVCpu->iem.s.iEffSeg, GCPtrEffDst, pVCpu->iem.s.uFpuOpcode);
    } IEM_MC_ENDIF();
    IEM_MC_ADVANCE_RIP_AND_FINISH();

    IEM_MC_END();
}


/** Opcode 0xdd !11/0. */
FNIEMOP_DEF_1(iemOp_fst_m64r,    uint8_t, bRm)
{
    IEMOP_MNEMONIC(fst_m64r, "fst m64r");
    IEM_MC_BEGIN(0, 0);
    IEM_MC_LOCAL(RTGCPTR,               GCPtrEffDst);
    IEM_MC_CALC_RM_EFF_ADDR(GCPtrEffDst, bRm, 0);

    IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
    IEM_MC_MAYBE_RAISE_DEVICE_NOT_AVAILABLE();
    IEM_MC_MAYBE_RAISE_FPU_XCPT();
    IEM_MC_PREPARE_FPU_USAGE();

    IEM_MC_LOCAL(uint8_t,               bUnmapInfo);
    IEM_MC_ARG(PRTFLOAT64U,             pr64Dst,            1);
    IEM_MC_MEM_MAP_R64_WO(pr64Dst, bUnmapInfo, pVCpu->iem.s.iEffSeg, GCPtrEffDst);

    IEM_MC_ARG(PCRTFLOAT80U,            pr80Value,          2);
    IEM_MC_IF_FPUREG_NOT_EMPTY_REF_R80(pr80Value, 0) {
        IEM_MC_LOCAL(uint16_t,          u16Fsw);
        IEM_MC_ARG_LOCAL_REF(uint16_t *,pu16Fsw,    u16Fsw, 0);
        IEM_MC_CALL_FPU_AIMPL_3(iemAImpl_fst_r80_to_r64, pu16Fsw, pr64Dst, pr80Value);
        IEM_MC_MEM_COMMIT_AND_UNMAP_FOR_FPU_STORE_WO(bUnmapInfo, u16Fsw);
        IEM_MC_UPDATE_FSW_WITH_MEM_OP(u16Fsw, pVCpu->iem.s.iEffSeg, GCPtrEffDst, pVCpu->iem.s.uFpuOpcode);
    } IEM_MC_ELSE() {
        IEM_MC_IF_FCW_IM() {
            IEM_MC_STORE_MEM_NEG_QNAN_R64_BY_REF(pr64Dst);
            IEM_MC_MEM_COMMIT_AND_UNMAP_WO(bUnmapInfo);
        } IEM_MC_ELSE() {
            IEM_MC_MEM_ROLLBACK_AND_UNMAP_WO(bUnmapInfo);
        } IEM_MC_ENDIF();
        IEM_MC_FPU_STACK_UNDERFLOW_MEM_OP(UINT8_MAX, pVCpu->iem.s.iEffSeg, GCPtrEffDst, pVCpu->iem.s.uFpuOpcode);
    } IEM_MC_ENDIF();
    IEM_MC_ADVANCE_RIP_AND_FINISH();

    IEM_MC_END();
}




/** Opcode 0xdd !11/0. */
FNIEMOP_DEF_1(iemOp_fstp_m64r,   uint8_t, bRm)
{
    IEMOP_MNEMONIC(fstp_m64r, "fstp m64r");
    IEM_MC_BEGIN(0, 0);
    IEM_MC_LOCAL(RTGCPTR,               GCPtrEffDst);
    IEM_MC_CALC_RM_EFF_ADDR(GCPtrEffDst, bRm, 0);

    IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
    IEM_MC_MAYBE_RAISE_DEVICE_NOT_AVAILABLE();
    IEM_MC_MAYBE_RAISE_FPU_XCPT();
    IEM_MC_PREPARE_FPU_USAGE();

    IEM_MC_LOCAL(uint8_t,               bUnmapInfo);
    IEM_MC_ARG(PRTFLOAT64U,             pr64Dst,            1);
    IEM_MC_MEM_MAP_R64_WO(pr64Dst, bUnmapInfo, pVCpu->iem.s.iEffSeg, GCPtrEffDst);

    IEM_MC_ARG(PCRTFLOAT80U,            pr80Value,          2);
    IEM_MC_IF_FPUREG_NOT_EMPTY_REF_R80(pr80Value, 0) {
        IEM_MC_LOCAL(uint16_t,          u16Fsw);
        IEM_MC_ARG_LOCAL_REF(uint16_t *,pu16Fsw,    u16Fsw, 0);
        IEM_MC_CALL_FPU_AIMPL_3(iemAImpl_fst_r80_to_r64, pu16Fsw, pr64Dst, pr80Value);
        IEM_MC_MEM_COMMIT_AND_UNMAP_FOR_FPU_STORE_WO(bUnmapInfo, u16Fsw);
        IEM_MC_UPDATE_FSW_WITH_MEM_OP_THEN_POP(u16Fsw, pVCpu->iem.s.iEffSeg, GCPtrEffDst, pVCpu->iem.s.uFpuOpcode);
    } IEM_MC_ELSE() {
        IEM_MC_IF_FCW_IM() {
            IEM_MC_STORE_MEM_NEG_QNAN_R64_BY_REF(pr64Dst);
            IEM_MC_MEM_COMMIT_AND_UNMAP_WO(bUnmapInfo);
        } IEM_MC_ELSE() {
            IEM_MC_MEM_ROLLBACK_AND_UNMAP_WO(bUnmapInfo);
        } IEM_MC_ENDIF();
        IEM_MC_FPU_STACK_UNDERFLOW_MEM_OP_THEN_POP(UINT8_MAX, pVCpu->iem.s.iEffSeg, GCPtrEffDst, pVCpu->iem.s.uFpuOpcode);
    } IEM_MC_ENDIF();
    IEM_MC_ADVANCE_RIP_AND_FINISH();

    IEM_MC_END();
}


/** Opcode 0xdd !11/0. */
FNIEMOP_DEF_1(iemOp_frstor,      uint8_t, bRm)
{
    IEMOP_MNEMONIC(frstor, "frstor m94/108byte");
    IEM_MC_BEGIN(0, 0);
    IEM_MC_ARG(RTGCPTR,                 GCPtrEffSrc,                                    2);
    IEM_MC_CALC_RM_EFF_ADDR(GCPtrEffSrc, bRm, 0);

    IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
    IEM_MC_MAYBE_RAISE_DEVICE_NOT_AVAILABLE();
    IEM_MC_ACTUALIZE_FPU_STATE_FOR_CHANGE();

    IEM_MC_ARG_CONST(IEMMODE,           enmEffOpSize, /*=*/ pVCpu->iem.s.enmEffOpSize,  0);
    IEM_MC_ARG_CONST(uint8_t,           iEffSeg,      /*=*/ pVCpu->iem.s.iEffSeg,       1);
    IEM_MC_CALL_CIMPL_3(IEM_CIMPL_F_FPU, RT_BIT_64(kIemNativeGstReg_FpuFcw) | RT_BIT_64(kIemNativeGstReg_FpuFsw),
                        iemCImpl_frstor, enmEffOpSize, iEffSeg, GCPtrEffSrc);
    IEM_MC_END();
}


/** Opcode 0xdd !11/0. */
FNIEMOP_DEF_1(iemOp_fnsave,      uint8_t, bRm)
{
    IEMOP_MNEMONIC(fnsave, "fnsave m94/108byte");
    IEM_MC_BEGIN(0, 0);
    IEM_MC_ARG(RTGCPTR,                 GCPtrEffDst,                                    2);
    IEM_MC_CALC_RM_EFF_ADDR(GCPtrEffDst, bRm, 0);

    IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
    IEM_MC_MAYBE_RAISE_DEVICE_NOT_AVAILABLE();
    IEM_MC_ACTUALIZE_FPU_STATE_FOR_CHANGE(); /* Note! Implicit fninit after the save, do not use FOR_READ here! */

    IEM_MC_ARG_CONST(IEMMODE,           enmEffOpSize, /*=*/ pVCpu->iem.s.enmEffOpSize,  0);
    IEM_MC_ARG_CONST(uint8_t,           iEffSeg,      /*=*/ pVCpu->iem.s.iEffSeg,       1);
    IEM_MC_CALL_CIMPL_3(IEM_CIMPL_F_FPU, RT_BIT_64(kIemNativeGstReg_FpuFcw) | RT_BIT_64(kIemNativeGstReg_FpuFsw),
                        iemCImpl_fnsave, enmEffOpSize, iEffSeg, GCPtrEffDst);
    IEM_MC_END();
}

/** Opcode 0xdd !11/0. */
FNIEMOP_DEF_1(iemOp_fnstsw,      uint8_t, bRm)
{
    IEMOP_MNEMONIC(fnstsw_m16, "fnstsw m16");

    IEM_MC_BEGIN(0, 0);
    IEM_MC_LOCAL(uint16_t, u16Tmp);
    IEM_MC_LOCAL(RTGCPTR,  GCPtrEffDst);

    IEM_MC_CALC_RM_EFF_ADDR(GCPtrEffDst, bRm, 0);
    IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
    IEM_MC_MAYBE_RAISE_DEVICE_NOT_AVAILABLE();

    IEM_MC_ACTUALIZE_FPU_STATE_FOR_READ();
    IEM_MC_FETCH_FSW(u16Tmp);
    IEM_MC_STORE_MEM_U16(pVCpu->iem.s.iEffSeg, GCPtrEffDst, u16Tmp);
    IEM_MC_ADVANCE_RIP_AND_FINISH();

/** @todo Debug / drop a hint to the verifier that things may differ
 * from REM. Seen 0x4020 (iem) vs 0x4000 (rem) at 0008:801c6b88 booting
 * NT4SP1. (X86_FSW_PE) */
    IEM_MC_END();
}


/** Opcode 0xdd 11/0. */
FNIEMOP_DEF_1(iemOp_ffree_stN,   uint8_t, bRm)
{
    IEMOP_MNEMONIC(ffree_stN, "ffree stN");
    /* Note! C0, C1, C2 and C3 are documented as undefined, we leave the
             unmodified. */
    IEM_MC_BEGIN(0, 0);
    IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();

    IEM_MC_MAYBE_RAISE_DEVICE_NOT_AVAILABLE();
    IEM_MC_MAYBE_RAISE_FPU_XCPT();

    IEM_MC_ACTUALIZE_FPU_STATE_FOR_CHANGE();
    IEM_MC_FPU_STACK_FREE(IEM_GET_MODRM_RM_8(bRm));
    IEM_MC_UPDATE_FPU_OPCODE_IP(pVCpu->iem.s.uFpuOpcode);

    IEM_MC_ADVANCE_RIP_AND_FINISH();
    IEM_MC_END();
}


/** Opcode 0xdd 11/1. */
FNIEMOP_DEF_1(iemOp_fst_stN,     uint8_t, bRm)
{
    IEMOP_MNEMONIC(fst_st0_stN, "fst st0,stN");
    IEM_MC_BEGIN(0, 0);
    IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
    IEM_MC_LOCAL(PCRTFLOAT80U,          pr80Value);
    IEM_MC_LOCAL(IEMFPURESULT,          FpuRes);
    IEM_MC_MAYBE_RAISE_DEVICE_NOT_AVAILABLE();
    IEM_MC_MAYBE_RAISE_FPU_XCPT();

    IEM_MC_PREPARE_FPU_USAGE();
    IEM_MC_IF_FPUREG_NOT_EMPTY_REF_R80(pr80Value, 0) {
        IEM_MC_SET_FPU_RESULT(FpuRes, 0 /*FSW*/, pr80Value);
        IEM_MC_STORE_FPU_RESULT(FpuRes, IEM_GET_MODRM_RM_8(bRm), pVCpu->iem.s.uFpuOpcode);
    } IEM_MC_ELSE() {
        IEM_MC_FPU_STACK_UNDERFLOW(IEM_GET_MODRM_RM_8(bRm), pVCpu->iem.s.uFpuOpcode);
    } IEM_MC_ENDIF();

    IEM_MC_ADVANCE_RIP_AND_FINISH();
    IEM_MC_END();
}


/** Opcode 0xdd 11/3. */
FNIEMOP_DEF_1(iemOp_fucom_stN_st0, uint8_t, bRm)
{
    IEMOP_MNEMONIC(fucom_st0_stN, "fucom st0,stN");
    return FNIEMOP_CALL_2(iemOpHlpFpuNoStore_st0_stN, bRm, iemAImpl_fucom_r80_by_r80);
}


/** Opcode 0xdd 11/4. */
FNIEMOP_DEF_1(iemOp_fucomp_stN,  uint8_t, bRm)
{
    IEMOP_MNEMONIC(fucomp_st0_stN, "fucomp st0,stN");
    return FNIEMOP_CALL_2(iemOpHlpFpuNoStore_st0_stN_pop, bRm, iemAImpl_fucom_r80_by_r80);
}


/**
 * @opcode      0xdd
 */
FNIEMOP_DEF(iemOp_EscF5)
{
    uint8_t bRm; IEM_OPCODE_GET_NEXT_U8(&bRm);
    pVCpu->iem.s.uFpuOpcode = RT_MAKE_U16(bRm, 0xdd & 0x7);
    if (IEM_IS_MODRM_REG_MODE(bRm))
    {
        switch (IEM_GET_MODRM_REG_8(bRm))
        {
            case 0: return FNIEMOP_CALL_1(iemOp_ffree_stN,   bRm);
            case 1: return FNIEMOP_CALL_1(iemOp_fxch_stN,    bRm); /* Reserved, intel behavior is that of XCHG ST(i). */
            case 2: return FNIEMOP_CALL_1(iemOp_fst_stN,     bRm);
            case 3: return FNIEMOP_CALL_1(iemOp_fstp_stN,    bRm);
            case 4: return FNIEMOP_CALL_1(iemOp_fucom_stN_st0,bRm);
            case 5: return FNIEMOP_CALL_1(iemOp_fucomp_stN,  bRm);
            case 6: IEMOP_RAISE_INVALID_OPCODE_RET();
            case 7: IEMOP_RAISE_INVALID_OPCODE_RET();
            IEM_NOT_REACHED_DEFAULT_CASE_RET();
        }
    }
    else
    {
        switch (IEM_GET_MODRM_REG_8(bRm))
        {
            case 0: return FNIEMOP_CALL_1(iemOp_fld_m64r,    bRm);
            case 1: return FNIEMOP_CALL_1(iemOp_fisttp_m64i, bRm);
            case 2: return FNIEMOP_CALL_1(iemOp_fst_m64r,    bRm);
            case 3: return FNIEMOP_CALL_1(iemOp_fstp_m64r,   bRm);
            case 4: return FNIEMOP_CALL_1(iemOp_frstor,      bRm);
            case 5: IEMOP_RAISE_INVALID_OPCODE_RET();
            case 6: return FNIEMOP_CALL_1(iemOp_fnsave,      bRm);
            case 7: return FNIEMOP_CALL_1(iemOp_fnstsw,      bRm);
            IEM_NOT_REACHED_DEFAULT_CASE_RET();
        }
    }
}


/** Opcode 0xde 11/0. */
FNIEMOP_DEF_1(iemOp_faddp_stN_st0, uint8_t, bRm)
{
    IEMOP_MNEMONIC(faddp_stN_st0, "faddp stN,st0");
    return FNIEMOP_CALL_2(iemOpHlpFpu_stN_st0_pop, bRm, iemAImpl_fadd_r80_by_r80);
}


/** Opcode 0xde 11/0. */
FNIEMOP_DEF_1(iemOp_fmulp_stN_st0, uint8_t, bRm)
{
    IEMOP_MNEMONIC(fmulp_stN_st0, "fmulp stN,st0");
    return FNIEMOP_CALL_2(iemOpHlpFpu_stN_st0_pop, bRm, iemAImpl_fmul_r80_by_r80);
}


/** Opcode 0xde 0xd9. */
FNIEMOP_DEF(iemOp_fcompp)
{
    IEMOP_MNEMONIC(fcompp, "fcompp");
    return FNIEMOP_CALL_1(iemOpHlpFpuNoStore_st0_st1_pop_pop, iemAImpl_fcom_r80_by_r80);
}


/** Opcode 0xde 11/4. */
FNIEMOP_DEF_1(iemOp_fsubrp_stN_st0, uint8_t, bRm)
{
    IEMOP_MNEMONIC(fsubrp_stN_st0, "fsubrp stN,st0");
    return FNIEMOP_CALL_2(iemOpHlpFpu_stN_st0_pop, bRm, iemAImpl_fsubr_r80_by_r80);
}


/** Opcode 0xde 11/5. */
FNIEMOP_DEF_1(iemOp_fsubp_stN_st0, uint8_t, bRm)
{
    IEMOP_MNEMONIC(fsubp_stN_st0, "fsubp stN,st0");
    return FNIEMOP_CALL_2(iemOpHlpFpu_stN_st0_pop, bRm, iemAImpl_fsub_r80_by_r80);
}


/** Opcode 0xde 11/6. */
FNIEMOP_DEF_1(iemOp_fdivrp_stN_st0, uint8_t, bRm)
{
    IEMOP_MNEMONIC(fdivrp_stN_st0, "fdivrp stN,st0");
    return FNIEMOP_CALL_2(iemOpHlpFpu_stN_st0_pop, bRm, iemAImpl_fdivr_r80_by_r80);
}


/** Opcode 0xde 11/7. */
FNIEMOP_DEF_1(iemOp_fdivp_stN_st0, uint8_t, bRm)
{
    IEMOP_MNEMONIC(fdivp_stN_st0, "fdivp stN,st0");
    return FNIEMOP_CALL_2(iemOpHlpFpu_stN_st0_pop, bRm, iemAImpl_fdiv_r80_by_r80);
}


/**
 * Common worker for FPU instructions working on ST0 and an m16i, and storing
 * the result in ST0.
 *
 * @param   bRm         Mod R/M byte.
 * @param   pfnAImpl    Pointer to the instruction implementation (assembly).
 */
FNIEMOP_DEF_2(iemOpHlpFpu_st0_m16i, uint8_t, bRm, PFNIEMAIMPLFPUI16, pfnAImpl)
{
    IEM_MC_BEGIN(0, 0);
    IEM_MC_LOCAL(RTGCPTR,                   GCPtrEffSrc);
    IEM_MC_LOCAL(IEMFPURESULT,              FpuRes);
    IEM_MC_LOCAL(int16_t,                   i16Val2);
    IEM_MC_ARG_LOCAL_REF(PIEMFPURESULT,     pFpuRes,        FpuRes,     0);
    IEM_MC_ARG(PCRTFLOAT80U,                pr80Value1,                 1);
    IEM_MC_ARG_LOCAL_REF(int16_t const *,   pi16Val2,       i16Val2,    2);

    IEM_MC_CALC_RM_EFF_ADDR(GCPtrEffSrc, bRm, 0);
    IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();

    IEM_MC_MAYBE_RAISE_DEVICE_NOT_AVAILABLE();
    IEM_MC_MAYBE_RAISE_FPU_XCPT();
    IEM_MC_FETCH_MEM_I16(i16Val2, pVCpu->iem.s.iEffSeg, GCPtrEffSrc);

    IEM_MC_PREPARE_FPU_USAGE();
    IEM_MC_IF_FPUREG_NOT_EMPTY_REF_R80(pr80Value1, 0) {
        IEM_MC_CALL_FPU_AIMPL_3(pfnAImpl, pFpuRes, pr80Value1, pi16Val2);
        IEM_MC_STORE_FPU_RESULT(FpuRes, 0, pVCpu->iem.s.uFpuOpcode);
    } IEM_MC_ELSE() {
        IEM_MC_FPU_STACK_UNDERFLOW(0, pVCpu->iem.s.uFpuOpcode);
    } IEM_MC_ENDIF();
    IEM_MC_ADVANCE_RIP_AND_FINISH();

    IEM_MC_END();
}


/** Opcode 0xde !11/0. */
FNIEMOP_DEF_1(iemOp_fiadd_m16i,  uint8_t, bRm)
{
    IEMOP_MNEMONIC(fiadd_m16i, "fiadd m16i");
    return FNIEMOP_CALL_2(iemOpHlpFpu_st0_m16i, bRm, iemAImpl_fiadd_r80_by_i16);
}


/** Opcode 0xde !11/1. */
FNIEMOP_DEF_1(iemOp_fimul_m16i,  uint8_t, bRm)
{
    IEMOP_MNEMONIC(fimul_m16i, "fimul m16i");
    return FNIEMOP_CALL_2(iemOpHlpFpu_st0_m16i, bRm, iemAImpl_fimul_r80_by_i16);
}


/** Opcode 0xde !11/2. */
FNIEMOP_DEF_1(iemOp_ficom_m16i,  uint8_t, bRm)
{
    IEMOP_MNEMONIC(ficom_st0_m16i, "ficom st0,m16i");

    IEM_MC_BEGIN(0, 0);
    IEM_MC_LOCAL(RTGCPTR,                   GCPtrEffSrc);
    IEM_MC_LOCAL(uint16_t,                  u16Fsw);
    IEM_MC_LOCAL(int16_t,                   i16Val2);
    IEM_MC_ARG_LOCAL_REF(uint16_t *,        pu16Fsw,        u16Fsw,     0);
    IEM_MC_ARG(PCRTFLOAT80U,                pr80Value1,                 1);
    IEM_MC_ARG_LOCAL_REF(int16_t const *,   pi16Val2,       i16Val2,    2);

    IEM_MC_CALC_RM_EFF_ADDR(GCPtrEffSrc, bRm, 0);
    IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();

    IEM_MC_MAYBE_RAISE_DEVICE_NOT_AVAILABLE();
    IEM_MC_MAYBE_RAISE_FPU_XCPT();
    IEM_MC_FETCH_MEM_I16(i16Val2, pVCpu->iem.s.iEffSeg, GCPtrEffSrc);

    IEM_MC_PREPARE_FPU_USAGE();
    IEM_MC_IF_FPUREG_NOT_EMPTY_REF_R80(pr80Value1, 0) {
        IEM_MC_CALL_FPU_AIMPL_3(iemAImpl_ficom_r80_by_i16, pu16Fsw, pr80Value1, pi16Val2);
        IEM_MC_UPDATE_FSW_WITH_MEM_OP(u16Fsw, pVCpu->iem.s.iEffSeg, GCPtrEffSrc, pVCpu->iem.s.uFpuOpcode);
    } IEM_MC_ELSE() {
        IEM_MC_FPU_STACK_UNDERFLOW_MEM_OP(UINT8_MAX, pVCpu->iem.s.iEffSeg, GCPtrEffSrc, pVCpu->iem.s.uFpuOpcode);
    } IEM_MC_ENDIF();
    IEM_MC_ADVANCE_RIP_AND_FINISH();

    IEM_MC_END();
}


/** Opcode 0xde !11/3. */
FNIEMOP_DEF_1(iemOp_ficomp_m16i, uint8_t, bRm)
{
    IEMOP_MNEMONIC(ficomp_st0_m16i, "ficomp st0,m16i");

    IEM_MC_BEGIN(0, 0);
    IEM_MC_LOCAL(RTGCPTR,                   GCPtrEffSrc);
    IEM_MC_LOCAL(uint16_t,                  u16Fsw);
    IEM_MC_LOCAL(int16_t,                   i16Val2);
    IEM_MC_ARG_LOCAL_REF(uint16_t *,        pu16Fsw,        u16Fsw,     0);
    IEM_MC_ARG(PCRTFLOAT80U,                pr80Value1,                 1);
    IEM_MC_ARG_LOCAL_REF(int16_t const *,   pi16Val2,       i16Val2,    2);

    IEM_MC_CALC_RM_EFF_ADDR(GCPtrEffSrc, bRm, 0);
    IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();

    IEM_MC_MAYBE_RAISE_DEVICE_NOT_AVAILABLE();
    IEM_MC_MAYBE_RAISE_FPU_XCPT();
    IEM_MC_FETCH_MEM_I16(i16Val2, pVCpu->iem.s.iEffSeg, GCPtrEffSrc);

    IEM_MC_PREPARE_FPU_USAGE();
    IEM_MC_IF_FPUREG_NOT_EMPTY_REF_R80(pr80Value1, 0) {
        IEM_MC_CALL_FPU_AIMPL_3(iemAImpl_ficom_r80_by_i16, pu16Fsw, pr80Value1, pi16Val2);
        IEM_MC_UPDATE_FSW_WITH_MEM_OP_THEN_POP(u16Fsw, pVCpu->iem.s.iEffSeg, GCPtrEffSrc, pVCpu->iem.s.uFpuOpcode);
    } IEM_MC_ELSE() {
        IEM_MC_FPU_STACK_UNDERFLOW_MEM_OP_THEN_POP(UINT8_MAX, pVCpu->iem.s.iEffSeg, GCPtrEffSrc, pVCpu->iem.s.uFpuOpcode);
    } IEM_MC_ENDIF();
    IEM_MC_ADVANCE_RIP_AND_FINISH();

    IEM_MC_END();
}


/** Opcode 0xde !11/4. */
FNIEMOP_DEF_1(iemOp_fisub_m16i,  uint8_t, bRm)
{
    IEMOP_MNEMONIC(fisub_m16i, "fisub m16i");
    return FNIEMOP_CALL_2(iemOpHlpFpu_st0_m16i, bRm, iemAImpl_fisub_r80_by_i16);
}


/** Opcode 0xde !11/5. */
FNIEMOP_DEF_1(iemOp_fisubr_m16i, uint8_t, bRm)
{
    IEMOP_MNEMONIC(fisubr_m16i, "fisubr m16i");
    return FNIEMOP_CALL_2(iemOpHlpFpu_st0_m16i, bRm, iemAImpl_fisubr_r80_by_i16);
}


/** Opcode 0xde !11/6. */
FNIEMOP_DEF_1(iemOp_fidiv_m16i,  uint8_t, bRm)
{
    IEMOP_MNEMONIC(fidiv_m16i, "fidiv m16i");
    return FNIEMOP_CALL_2(iemOpHlpFpu_st0_m16i, bRm, iemAImpl_fidiv_r80_by_i16);
}


/** Opcode 0xde !11/7. */
FNIEMOP_DEF_1(iemOp_fidivr_m16i, uint8_t, bRm)
{
    IEMOP_MNEMONIC(fidivr_m16i, "fidivr m16i");
    return FNIEMOP_CALL_2(iemOpHlpFpu_st0_m16i, bRm, iemAImpl_fidivr_r80_by_i16);
}


/**
 * @opcode      0xde
 */
FNIEMOP_DEF(iemOp_EscF6)
{
    uint8_t bRm; IEM_OPCODE_GET_NEXT_U8(&bRm);
    pVCpu->iem.s.uFpuOpcode = RT_MAKE_U16(bRm, 0xde & 0x7);
    if (IEM_IS_MODRM_REG_MODE(bRm))
    {
        switch (IEM_GET_MODRM_REG_8(bRm))
        {
            case 0: return FNIEMOP_CALL_1(iemOp_faddp_stN_st0, bRm);
            case 1: return FNIEMOP_CALL_1(iemOp_fmulp_stN_st0, bRm);
            case 2: return FNIEMOP_CALL_1(iemOp_fcomp_stN, bRm);
            case 3: if (bRm == 0xd9)
                        return FNIEMOP_CALL(iemOp_fcompp);
                    IEMOP_RAISE_INVALID_OPCODE_RET();
            case 4: return FNIEMOP_CALL_1(iemOp_fsubrp_stN_st0, bRm);
            case 5: return FNIEMOP_CALL_1(iemOp_fsubp_stN_st0, bRm);
            case 6: return FNIEMOP_CALL_1(iemOp_fdivrp_stN_st0, bRm);
            case 7: return FNIEMOP_CALL_1(iemOp_fdivp_stN_st0, bRm);
            IEM_NOT_REACHED_DEFAULT_CASE_RET();
        }
    }
    else
    {
        switch (IEM_GET_MODRM_REG_8(bRm))
        {
            case 0: return FNIEMOP_CALL_1(iemOp_fiadd_m16i,  bRm);
            case 1: return FNIEMOP_CALL_1(iemOp_fimul_m16i,  bRm);
            case 2: return FNIEMOP_CALL_1(iemOp_ficom_m16i,  bRm);
            case 3: return FNIEMOP_CALL_1(iemOp_ficomp_m16i, bRm);
            case 4: return FNIEMOP_CALL_1(iemOp_fisub_m16i,  bRm);
            case 5: return FNIEMOP_CALL_1(iemOp_fisubr_m16i, bRm);
            case 6: return FNIEMOP_CALL_1(iemOp_fidiv_m16i,  bRm);
            case 7: return FNIEMOP_CALL_1(iemOp_fidivr_m16i, bRm);
            IEM_NOT_REACHED_DEFAULT_CASE_RET();
        }
    }
}


/** Opcode 0xdf 11/0.
 * Undocument instruction, assumed to work like ffree + fincstp.  */
FNIEMOP_DEF_1(iemOp_ffreep_stN, uint8_t, bRm)
{
    IEMOP_MNEMONIC(ffreep_stN, "ffreep stN");
    IEM_MC_BEGIN(0, 0);
    IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();

    IEM_MC_MAYBE_RAISE_DEVICE_NOT_AVAILABLE();
    IEM_MC_MAYBE_RAISE_FPU_XCPT();

    IEM_MC_ACTUALIZE_FPU_STATE_FOR_CHANGE();
    IEM_MC_FPU_STACK_FREE(IEM_GET_MODRM_RM_8(bRm));
    IEM_MC_FPU_STACK_INC_TOP();
    IEM_MC_UPDATE_FPU_OPCODE_IP(pVCpu->iem.s.uFpuOpcode);

    IEM_MC_ADVANCE_RIP_AND_FINISH();
    IEM_MC_END();
}


/** Opcode 0xdf 0xe0. */
FNIEMOP_DEF(iemOp_fnstsw_ax)
{
    IEMOP_MNEMONIC(fnstsw_ax, "fnstsw ax");
    IEM_MC_BEGIN(0, 0);
    IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
    IEM_MC_LOCAL(uint16_t, u16Tmp);
    IEM_MC_MAYBE_RAISE_DEVICE_NOT_AVAILABLE();
    IEM_MC_ACTUALIZE_FPU_STATE_FOR_READ();
    IEM_MC_FETCH_FSW(u16Tmp);
    IEM_MC_STORE_GREG_U16(X86_GREG_xAX, u16Tmp);
    IEM_MC_ADVANCE_RIP_AND_FINISH();
    IEM_MC_END();
}


/** Opcode 0xdf 11/5. */
FNIEMOP_DEF_1(iemOp_fucomip_st0_stN, uint8_t, bRm)
{
    IEMOP_MNEMONIC(fucomip_st0_stN, "fucomip st0,stN");
    IEM_MC_DEFER_TO_CIMPL_3_RET(IEM_CIMPL_F_FPU | IEM_CIMPL_F_STATUS_FLAGS, 0,
                                iemCImpl_fcomi_fucomi, IEM_GET_MODRM_RM_8(bRm), false /*fUCmp*/,
                                RT_BIT_32(31) /*fPop*/ | pVCpu->iem.s.uFpuOpcode);
}


/** Opcode 0xdf 11/6. */
FNIEMOP_DEF_1(iemOp_fcomip_st0_stN,  uint8_t, bRm)
{
    IEMOP_MNEMONIC(fcomip_st0_stN, "fcomip st0,stN");
    IEM_MC_DEFER_TO_CIMPL_3_RET(IEM_CIMPL_F_FPU | IEM_CIMPL_F_STATUS_FLAGS, 0,
                                iemCImpl_fcomi_fucomi, IEM_GET_MODRM_RM_8(bRm), false /*fUCmp*/,
                                RT_BIT_32(31) /*fPop*/ | pVCpu->iem.s.uFpuOpcode);
}


/** Opcode 0xdf !11/0. */
FNIEMOP_DEF_1(iemOp_fild_m16i, uint8_t, bRm)
{
    IEMOP_MNEMONIC(fild_m16i, "fild m16i");

    IEM_MC_BEGIN(0, 0);
    IEM_MC_LOCAL(RTGCPTR,                   GCPtrEffSrc);
    IEM_MC_LOCAL(IEMFPURESULT,              FpuRes);
    IEM_MC_LOCAL(int16_t,                   i16Val);
    IEM_MC_ARG_LOCAL_REF(PIEMFPURESULT,     pFpuRes,    FpuRes, 0);
    IEM_MC_ARG_LOCAL_REF(int16_t const *,   pi16Val,    i16Val, 1);

    IEM_MC_CALC_RM_EFF_ADDR(GCPtrEffSrc, bRm, 0);
    IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();

    IEM_MC_MAYBE_RAISE_DEVICE_NOT_AVAILABLE();
    IEM_MC_MAYBE_RAISE_FPU_XCPT();
    IEM_MC_FETCH_MEM_I16(i16Val, pVCpu->iem.s.iEffSeg, GCPtrEffSrc);

    IEM_MC_PREPARE_FPU_USAGE();
    IEM_MC_IF_FPUREG_IS_EMPTY(7) {
        IEM_MC_CALL_FPU_AIMPL_2(iemAImpl_fild_r80_from_i16, pFpuRes, pi16Val);
        IEM_MC_PUSH_FPU_RESULT_MEM_OP(FpuRes, pVCpu->iem.s.iEffSeg, GCPtrEffSrc, pVCpu->iem.s.uFpuOpcode);
    } IEM_MC_ELSE() {
        IEM_MC_FPU_STACK_PUSH_OVERFLOW_MEM_OP(pVCpu->iem.s.iEffSeg, GCPtrEffSrc, pVCpu->iem.s.uFpuOpcode);
    } IEM_MC_ENDIF();
    IEM_MC_ADVANCE_RIP_AND_FINISH();

    IEM_MC_END();
}


/** Opcode 0xdf !11/1. */
FNIEMOP_DEF_1(iemOp_fisttp_m16i, uint8_t, bRm)
{
    IEMOP_MNEMONIC(fisttp_m16i, "fisttp m16i");
    IEM_MC_BEGIN(0, 0);
    IEM_MC_LOCAL(RTGCPTR,               GCPtrEffDst);
    IEM_MC_CALC_RM_EFF_ADDR(GCPtrEffDst, bRm, 0);

    IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
    IEM_MC_MAYBE_RAISE_DEVICE_NOT_AVAILABLE();
    IEM_MC_MAYBE_RAISE_FPU_XCPT();
    IEM_MC_PREPARE_FPU_USAGE();

    IEM_MC_LOCAL(uint8_t,               bUnmapInfo);
    IEM_MC_ARG(int16_t *,               pi16Dst,            1);
    IEM_MC_MEM_MAP_I16_WO(pi16Dst, bUnmapInfo, pVCpu->iem.s.iEffSeg, GCPtrEffDst);

    IEM_MC_ARG(PCRTFLOAT80U,            pr80Value,          2);
    IEM_MC_IF_FPUREG_NOT_EMPTY_REF_R80(pr80Value, 0) {
        IEM_MC_LOCAL(uint16_t,          u16Fsw);
        IEM_MC_ARG_LOCAL_REF(uint16_t *,pu16Fsw,    u16Fsw, 0);
        IEM_MC_CALL_FPU_AIMPL_3(iemAImpl_fistt_r80_to_i16, pu16Fsw, pi16Dst, pr80Value);
        IEM_MC_MEM_COMMIT_AND_UNMAP_FOR_FPU_STORE_WO(bUnmapInfo, u16Fsw);
        IEM_MC_UPDATE_FSW_WITH_MEM_OP_THEN_POP(u16Fsw, pVCpu->iem.s.iEffSeg, GCPtrEffDst, pVCpu->iem.s.uFpuOpcode);
    } IEM_MC_ELSE() {
        IEM_MC_IF_FCW_IM() {
            IEM_MC_STORE_MEM_I16_CONST_BY_REF(pi16Dst, INT16_MIN /* (integer indefinite) */);
            IEM_MC_MEM_COMMIT_AND_UNMAP_WO(bUnmapInfo);
        } IEM_MC_ELSE() {
            IEM_MC_MEM_ROLLBACK_AND_UNMAP_WO(bUnmapInfo);
        } IEM_MC_ENDIF();
        IEM_MC_FPU_STACK_UNDERFLOW_MEM_OP_THEN_POP(UINT8_MAX, pVCpu->iem.s.iEffSeg, GCPtrEffDst, pVCpu->iem.s.uFpuOpcode);
    } IEM_MC_ENDIF();
    IEM_MC_ADVANCE_RIP_AND_FINISH();

    IEM_MC_END();
}


/** Opcode 0xdf !11/2. */
FNIEMOP_DEF_1(iemOp_fist_m16i,   uint8_t, bRm)
{
    IEMOP_MNEMONIC(fist_m16i, "fist m16i");
    IEM_MC_BEGIN(0, 0);
    IEM_MC_LOCAL(RTGCPTR,               GCPtrEffDst);
    IEM_MC_CALC_RM_EFF_ADDR(GCPtrEffDst, bRm, 0);

    IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
    IEM_MC_MAYBE_RAISE_DEVICE_NOT_AVAILABLE();
    IEM_MC_MAYBE_RAISE_FPU_XCPT();
    IEM_MC_PREPARE_FPU_USAGE();

    IEM_MC_LOCAL(uint8_t,               bUnmapInfo);
    IEM_MC_ARG(int16_t *,               pi16Dst,            1);
    IEM_MC_MEM_MAP_I16_WO(pi16Dst, bUnmapInfo, pVCpu->iem.s.iEffSeg, GCPtrEffDst);

    IEM_MC_ARG(PCRTFLOAT80U,            pr80Value,          2);
    IEM_MC_IF_FPUREG_NOT_EMPTY_REF_R80(pr80Value, 0) {
        IEM_MC_LOCAL(uint16_t,          u16Fsw);
        IEM_MC_ARG_LOCAL_REF(uint16_t *,pu16Fsw,    u16Fsw, 0);
        IEM_MC_CALL_FPU_AIMPL_3(iemAImpl_fist_r80_to_i16, pu16Fsw, pi16Dst, pr80Value);
        IEM_MC_MEM_COMMIT_AND_UNMAP_FOR_FPU_STORE_WO(bUnmapInfo, u16Fsw);
        IEM_MC_UPDATE_FSW_WITH_MEM_OP(u16Fsw, pVCpu->iem.s.iEffSeg, GCPtrEffDst, pVCpu->iem.s.uFpuOpcode);
    } IEM_MC_ELSE() {
        IEM_MC_IF_FCW_IM() {
            IEM_MC_STORE_MEM_I16_CONST_BY_REF(pi16Dst, INT16_MIN /* (integer indefinite) */);
            IEM_MC_MEM_COMMIT_AND_UNMAP_WO(bUnmapInfo);
        } IEM_MC_ELSE() {
            IEM_MC_MEM_ROLLBACK_AND_UNMAP_WO(bUnmapInfo);
        } IEM_MC_ENDIF();
        IEM_MC_FPU_STACK_UNDERFLOW_MEM_OP(UINT8_MAX, pVCpu->iem.s.iEffSeg, GCPtrEffDst, pVCpu->iem.s.uFpuOpcode);
    } IEM_MC_ENDIF();
    IEM_MC_ADVANCE_RIP_AND_FINISH();

    IEM_MC_END();
}


/** Opcode 0xdf !11/3. */
FNIEMOP_DEF_1(iemOp_fistp_m16i,  uint8_t, bRm)
{
    IEMOP_MNEMONIC(fistp_m16i, "fistp m16i");
    IEM_MC_BEGIN(0, 0);
    IEM_MC_LOCAL(RTGCPTR,               GCPtrEffDst);
    IEM_MC_CALC_RM_EFF_ADDR(GCPtrEffDst, bRm, 0);

    IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
    IEM_MC_MAYBE_RAISE_DEVICE_NOT_AVAILABLE();
    IEM_MC_MAYBE_RAISE_FPU_XCPT();
    IEM_MC_PREPARE_FPU_USAGE();

    IEM_MC_LOCAL(uint8_t,               bUnmapInfo);
    IEM_MC_ARG(int16_t *,               pi16Dst,            1);
    IEM_MC_MEM_MAP_I16_WO(pi16Dst, bUnmapInfo, pVCpu->iem.s.iEffSeg, GCPtrEffDst);

    IEM_MC_ARG(PCRTFLOAT80U,            pr80Value,          2);
    IEM_MC_IF_FPUREG_NOT_EMPTY_REF_R80(pr80Value, 0) {
        IEM_MC_LOCAL(uint16_t,          u16Fsw);
        IEM_MC_ARG_LOCAL_REF(uint16_t *,pu16Fsw,    u16Fsw, 0);
        IEM_MC_CALL_FPU_AIMPL_3(iemAImpl_fist_r80_to_i16, pu16Fsw, pi16Dst, pr80Value);
        IEM_MC_MEM_COMMIT_AND_UNMAP_FOR_FPU_STORE_WO(bUnmapInfo, u16Fsw);
        IEM_MC_UPDATE_FSW_WITH_MEM_OP_THEN_POP(u16Fsw, pVCpu->iem.s.iEffSeg, GCPtrEffDst, pVCpu->iem.s.uFpuOpcode);
    } IEM_MC_ELSE() {
        IEM_MC_IF_FCW_IM() {
            IEM_MC_STORE_MEM_I16_CONST_BY_REF(pi16Dst, INT16_MIN /* (integer indefinite) */);
            IEM_MC_MEM_COMMIT_AND_UNMAP_WO(bUnmapInfo);
        } IEM_MC_ELSE() {
            IEM_MC_MEM_ROLLBACK_AND_UNMAP_WO(bUnmapInfo);
        } IEM_MC_ENDIF();
        IEM_MC_FPU_STACK_UNDERFLOW_MEM_OP_THEN_POP(UINT8_MAX, pVCpu->iem.s.iEffSeg, GCPtrEffDst, pVCpu->iem.s.uFpuOpcode);
    } IEM_MC_ENDIF();
    IEM_MC_ADVANCE_RIP_AND_FINISH();

    IEM_MC_END();
}


/** Opcode 0xdf !11/4. */
FNIEMOP_DEF_1(iemOp_fbld_m80d,   uint8_t, bRm)
{
    IEMOP_MNEMONIC(fbld_m80d, "fbld m80d");

    IEM_MC_BEGIN(0, 0);
    IEM_MC_LOCAL(RTGCPTR,                   GCPtrEffSrc);
    IEM_MC_LOCAL(IEMFPURESULT,              FpuRes);
    IEM_MC_LOCAL(RTPBCD80U,                 d80Val);
    IEM_MC_ARG_LOCAL_REF(PIEMFPURESULT,     pFpuRes,    FpuRes,     0);
    IEM_MC_ARG_LOCAL_REF(PCRTPBCD80U,       pd80Val,    d80Val,     1);

    IEM_MC_CALC_RM_EFF_ADDR(GCPtrEffSrc, bRm, 0);
    IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();

    IEM_MC_MAYBE_RAISE_DEVICE_NOT_AVAILABLE();
    IEM_MC_MAYBE_RAISE_FPU_XCPT();
    IEM_MC_FETCH_MEM_D80(d80Val, pVCpu->iem.s.iEffSeg, GCPtrEffSrc);

    IEM_MC_PREPARE_FPU_USAGE();
    IEM_MC_IF_FPUREG_IS_EMPTY(7) {
        IEM_MC_CALL_FPU_AIMPL_2(iemAImpl_fld_r80_from_d80, pFpuRes, pd80Val);
        IEM_MC_PUSH_FPU_RESULT_MEM_OP(FpuRes, pVCpu->iem.s.iEffSeg, GCPtrEffSrc, pVCpu->iem.s.uFpuOpcode);
    } IEM_MC_ELSE() {
        IEM_MC_FPU_STACK_PUSH_OVERFLOW_MEM_OP(pVCpu->iem.s.iEffSeg, GCPtrEffSrc, pVCpu->iem.s.uFpuOpcode);
    } IEM_MC_ENDIF();
    IEM_MC_ADVANCE_RIP_AND_FINISH();

    IEM_MC_END();
}


/** Opcode 0xdf !11/5. */
FNIEMOP_DEF_1(iemOp_fild_m64i,   uint8_t, bRm)
{
    IEMOP_MNEMONIC(fild_m64i, "fild m64i");

    IEM_MC_BEGIN(0, 0);
    IEM_MC_LOCAL(RTGCPTR,                   GCPtrEffSrc);
    IEM_MC_LOCAL(IEMFPURESULT,              FpuRes);
    IEM_MC_LOCAL(int64_t,                   i64Val);
    IEM_MC_ARG_LOCAL_REF(PIEMFPURESULT,     pFpuRes,    FpuRes, 0);
    IEM_MC_ARG_LOCAL_REF(int64_t const *,   pi64Val,    i64Val, 1);

    IEM_MC_CALC_RM_EFF_ADDR(GCPtrEffSrc, bRm, 0);
    IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();

    IEM_MC_MAYBE_RAISE_DEVICE_NOT_AVAILABLE();
    IEM_MC_MAYBE_RAISE_FPU_XCPT();
    IEM_MC_FETCH_MEM_I64(i64Val, pVCpu->iem.s.iEffSeg, GCPtrEffSrc);

    IEM_MC_PREPARE_FPU_USAGE();
    IEM_MC_IF_FPUREG_IS_EMPTY(7) {
        IEM_MC_CALL_FPU_AIMPL_2(iemAImpl_fild_r80_from_i64, pFpuRes, pi64Val);
        IEM_MC_PUSH_FPU_RESULT_MEM_OP(FpuRes, pVCpu->iem.s.iEffSeg, GCPtrEffSrc, pVCpu->iem.s.uFpuOpcode);
    } IEM_MC_ELSE() {
        IEM_MC_FPU_STACK_PUSH_OVERFLOW_MEM_OP(pVCpu->iem.s.iEffSeg, GCPtrEffSrc, pVCpu->iem.s.uFpuOpcode);
    } IEM_MC_ENDIF();
    IEM_MC_ADVANCE_RIP_AND_FINISH();

    IEM_MC_END();
}


/** Opcode 0xdf !11/6. */
FNIEMOP_DEF_1(iemOp_fbstp_m80d,  uint8_t, bRm)
{
    IEMOP_MNEMONIC(fbstp_m80d, "fbstp m80d");
    IEM_MC_BEGIN(0, 0);
    IEM_MC_LOCAL(RTGCPTR,               GCPtrEffDst);
    IEM_MC_CALC_RM_EFF_ADDR(GCPtrEffDst, bRm, 0);

    IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
    IEM_MC_MAYBE_RAISE_DEVICE_NOT_AVAILABLE();
    IEM_MC_MAYBE_RAISE_FPU_XCPT();
    IEM_MC_PREPARE_FPU_USAGE();

    IEM_MC_LOCAL(uint8_t,               bUnmapInfo);
    IEM_MC_ARG(PRTPBCD80U,              pd80Dst,            1);
    IEM_MC_MEM_MAP_D80_WO(pd80Dst, bUnmapInfo, pVCpu->iem.s.iEffSeg, GCPtrEffDst);

    IEM_MC_ARG(PCRTFLOAT80U,            pr80Value,          2);
    IEM_MC_IF_FPUREG_NOT_EMPTY_REF_R80(pr80Value, 0) {
        IEM_MC_LOCAL(uint16_t,          u16Fsw);
        IEM_MC_ARG_LOCAL_REF(uint16_t *,pu16Fsw,    u16Fsw, 0);
        IEM_MC_CALL_FPU_AIMPL_3(iemAImpl_fst_r80_to_d80, pu16Fsw, pd80Dst, pr80Value);
        IEM_MC_MEM_COMMIT_AND_UNMAP_FOR_FPU_STORE_WO(bUnmapInfo, u16Fsw);
        IEM_MC_UPDATE_FSW_WITH_MEM_OP_THEN_POP(u16Fsw, pVCpu->iem.s.iEffSeg, GCPtrEffDst, pVCpu->iem.s.uFpuOpcode);
    } IEM_MC_ELSE() {
        IEM_MC_IF_FCW_IM() {
            IEM_MC_STORE_MEM_INDEF_D80_BY_REF(pd80Dst);
            IEM_MC_MEM_COMMIT_AND_UNMAP_WO(bUnmapInfo);
        } IEM_MC_ELSE() {
            IEM_MC_MEM_ROLLBACK_AND_UNMAP_WO(bUnmapInfo);
        } IEM_MC_ENDIF();
        IEM_MC_FPU_STACK_UNDERFLOW_MEM_OP_THEN_POP(UINT8_MAX, pVCpu->iem.s.iEffSeg, GCPtrEffDst, pVCpu->iem.s.uFpuOpcode);
    } IEM_MC_ENDIF();
    IEM_MC_ADVANCE_RIP_AND_FINISH();

    IEM_MC_END();
}


/** Opcode 0xdf !11/7. */
FNIEMOP_DEF_1(iemOp_fistp_m64i,  uint8_t, bRm)
{
    IEMOP_MNEMONIC(fistp_m64i, "fistp m64i");
    IEM_MC_BEGIN(0, 0);
    IEM_MC_LOCAL(RTGCPTR,               GCPtrEffDst);
    IEM_MC_CALC_RM_EFF_ADDR(GCPtrEffDst, bRm, 0);

    IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
    IEM_MC_MAYBE_RAISE_DEVICE_NOT_AVAILABLE();
    IEM_MC_MAYBE_RAISE_FPU_XCPT();
    IEM_MC_PREPARE_FPU_USAGE();

    IEM_MC_LOCAL(uint8_t,               bUnmapInfo);
    IEM_MC_ARG(int64_t *,               pi64Dst,            1);
    IEM_MC_MEM_MAP_I64_WO(pi64Dst, bUnmapInfo, pVCpu->iem.s.iEffSeg, GCPtrEffDst);

    IEM_MC_ARG(PCRTFLOAT80U,            pr80Value,          2);
    IEM_MC_IF_FPUREG_NOT_EMPTY_REF_R80(pr80Value, 0) {
        IEM_MC_LOCAL(uint16_t,          u16Fsw);
        IEM_MC_ARG_LOCAL_REF(uint16_t *,pu16Fsw,    u16Fsw, 0);
        IEM_MC_CALL_FPU_AIMPL_3(iemAImpl_fist_r80_to_i64, pu16Fsw, pi64Dst, pr80Value);
        IEM_MC_MEM_COMMIT_AND_UNMAP_FOR_FPU_STORE_WO(bUnmapInfo, u16Fsw);
        IEM_MC_UPDATE_FSW_WITH_MEM_OP_THEN_POP(u16Fsw, pVCpu->iem.s.iEffSeg, GCPtrEffDst, pVCpu->iem.s.uFpuOpcode);
    } IEM_MC_ELSE() {
        IEM_MC_IF_FCW_IM() {
            IEM_MC_STORE_MEM_I64_CONST_BY_REF(pi64Dst, INT64_MIN /* (integer indefinite) */);
            IEM_MC_MEM_COMMIT_AND_UNMAP_WO(bUnmapInfo);
        } IEM_MC_ELSE() {
            IEM_MC_MEM_ROLLBACK_AND_UNMAP_WO(bUnmapInfo);
        } IEM_MC_ENDIF();
        IEM_MC_FPU_STACK_UNDERFLOW_MEM_OP_THEN_POP(UINT8_MAX, pVCpu->iem.s.iEffSeg, GCPtrEffDst, pVCpu->iem.s.uFpuOpcode);
    } IEM_MC_ENDIF();
    IEM_MC_ADVANCE_RIP_AND_FINISH();

    IEM_MC_END();
}


/**
 * @opcode      0xdf
 */
FNIEMOP_DEF(iemOp_EscF7)
{
    uint8_t bRm; IEM_OPCODE_GET_NEXT_U8(&bRm);
    pVCpu->iem.s.uFpuOpcode = RT_MAKE_U16(bRm, 0xdf & 0x7);
    if (IEM_IS_MODRM_REG_MODE(bRm))
    {
        switch (IEM_GET_MODRM_REG_8(bRm))
        {
            case 0: return FNIEMOP_CALL_1(iemOp_ffreep_stN, bRm); /* ffree + pop afterwards, since forever according to AMD. */
            case 1: return FNIEMOP_CALL_1(iemOp_fxch_stN,   bRm); /* Reserved, behaves like FXCH ST(i) on intel. */
            case 2: return FNIEMOP_CALL_1(iemOp_fstp_stN,   bRm); /* Reserved, behaves like FSTP ST(i) on intel. */
            case 3: return FNIEMOP_CALL_1(iemOp_fstp_stN,   bRm); /* Reserved, behaves like FSTP ST(i) on intel. */
            case 4: if (bRm == 0xe0)
                        return FNIEMOP_CALL(iemOp_fnstsw_ax);
                    IEMOP_RAISE_INVALID_OPCODE_RET();
            case 5: return FNIEMOP_CALL_1(iemOp_fucomip_st0_stN, bRm);
            case 6: return FNIEMOP_CALL_1(iemOp_fcomip_st0_stN,  bRm);
            case 7: IEMOP_RAISE_INVALID_OPCODE_RET();
            IEM_NOT_REACHED_DEFAULT_CASE_RET();
        }
    }
    else
    {
        switch (IEM_GET_MODRM_REG_8(bRm))
        {
            case 0: return FNIEMOP_CALL_1(iemOp_fild_m16i,   bRm);
            case 1: return FNIEMOP_CALL_1(iemOp_fisttp_m16i, bRm);
            case 2: return FNIEMOP_CALL_1(iemOp_fist_m16i,   bRm);
            case 3: return FNIEMOP_CALL_1(iemOp_fistp_m16i,  bRm);
            case 4: return FNIEMOP_CALL_1(iemOp_fbld_m80d,   bRm);
            case 5: return FNIEMOP_CALL_1(iemOp_fild_m64i,   bRm);
            case 6: return FNIEMOP_CALL_1(iemOp_fbstp_m80d,  bRm);
            case 7: return FNIEMOP_CALL_1(iemOp_fistp_m64i,  bRm);
            IEM_NOT_REACHED_DEFAULT_CASE_RET();
        }
    }
}


/**
 * @opcode      0xe0
 * @opfltest    zf
 */
FNIEMOP_DEF(iemOp_loopne_Jb)
{
    IEMOP_MNEMONIC(loopne_Jb, "loopne Jb");
    int8_t i8Imm; IEM_OPCODE_GET_NEXT_S8(&i8Imm);
    IEMOP_HLP_DEFAULT_64BIT_OP_SIZE();

    switch (pVCpu->iem.s.enmEffAddrMode)
    {
        case IEMMODE_16BIT:
            IEM_MC_BEGIN(IEM_MC_F_NOT_64BIT, 0);
            IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
            IEM_MC_IF_CX_IS_NOT_ONE_AND_EFL_BIT_NOT_SET(X86_EFL_ZF) {
                IEM_MC_SUB_GREG_U16(X86_GREG_xCX, 1);
                IEM_MC_REL_JMP_S8_AND_FINISH(i8Imm);
            } IEM_MC_ELSE() {
                IEM_MC_SUB_GREG_U16(X86_GREG_xCX, 1);
                IEM_MC_ADVANCE_RIP_AND_FINISH();
            } IEM_MC_ENDIF();
            IEM_MC_END();
            break;

        case IEMMODE_32BIT:
            IEM_MC_BEGIN(IEM_MC_F_MIN_386, 0);
            IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
            IEM_MC_IF_ECX_IS_NOT_ONE_AND_EFL_BIT_NOT_SET(X86_EFL_ZF) {
                IEM_MC_SUB_GREG_U32(X86_GREG_xCX, 1);
                IEM_MC_REL_JMP_S8_AND_FINISH(i8Imm);
            } IEM_MC_ELSE() {
                IEM_MC_SUB_GREG_U32(X86_GREG_xCX, 1);
                IEM_MC_ADVANCE_RIP_AND_FINISH();
            } IEM_MC_ENDIF();
            IEM_MC_END();
            break;

        case IEMMODE_64BIT:
            IEM_MC_BEGIN(IEM_MC_F_64BIT, 0);
            IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
            IEM_MC_IF_RCX_IS_NOT_ONE_AND_EFL_BIT_NOT_SET(X86_EFL_ZF) {
                IEM_MC_SUB_GREG_U64(X86_GREG_xCX, 1);
                IEM_MC_REL_JMP_S8_AND_FINISH(i8Imm);
            } IEM_MC_ELSE() {
                IEM_MC_SUB_GREG_U64(X86_GREG_xCX, 1);
                IEM_MC_ADVANCE_RIP_AND_FINISH();
            } IEM_MC_ENDIF();
            IEM_MC_END();
            break;

        IEM_NOT_REACHED_DEFAULT_CASE_RET();
    }
}


/**
 * @opcode      0xe1
 * @opfltest    zf
 */
FNIEMOP_DEF(iemOp_loope_Jb)
{
    IEMOP_MNEMONIC(loope_Jb, "loope Jb");
    int8_t i8Imm; IEM_OPCODE_GET_NEXT_S8(&i8Imm);
    IEMOP_HLP_DEFAULT_64BIT_OP_SIZE();

    switch (pVCpu->iem.s.enmEffAddrMode)
    {
        case IEMMODE_16BIT:
            IEM_MC_BEGIN(IEM_MC_F_NOT_64BIT, 0);
            IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
            IEM_MC_IF_CX_IS_NOT_ONE_AND_EFL_BIT_SET(X86_EFL_ZF) {
                IEM_MC_SUB_GREG_U16(X86_GREG_xCX, 1);
                IEM_MC_REL_JMP_S8_AND_FINISH(i8Imm);
            } IEM_MC_ELSE() {
                IEM_MC_SUB_GREG_U16(X86_GREG_xCX, 1);
                IEM_MC_ADVANCE_RIP_AND_FINISH();
            } IEM_MC_ENDIF();
            IEM_MC_END();
            break;

        case IEMMODE_32BIT:
            IEM_MC_BEGIN(IEM_MC_F_MIN_386, 0);
            IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
            IEM_MC_IF_ECX_IS_NOT_ONE_AND_EFL_BIT_SET(X86_EFL_ZF) {
                IEM_MC_SUB_GREG_U32(X86_GREG_xCX, 1);
                IEM_MC_REL_JMP_S8_AND_FINISH(i8Imm);
            } IEM_MC_ELSE() {
                IEM_MC_SUB_GREG_U32(X86_GREG_xCX, 1);
                IEM_MC_ADVANCE_RIP_AND_FINISH();
            } IEM_MC_ENDIF();
            IEM_MC_END();
            break;

        case IEMMODE_64BIT:
            IEM_MC_BEGIN(IEM_MC_F_64BIT, 0);
            IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
            IEM_MC_IF_RCX_IS_NOT_ONE_AND_EFL_BIT_SET(X86_EFL_ZF) {
                IEM_MC_SUB_GREG_U64(X86_GREG_xCX, 1);
                IEM_MC_REL_JMP_S8_AND_FINISH(i8Imm);
            } IEM_MC_ELSE() {
                IEM_MC_SUB_GREG_U64(X86_GREG_xCX, 1);
                IEM_MC_ADVANCE_RIP_AND_FINISH();
            } IEM_MC_ENDIF();
            IEM_MC_END();
            break;

        IEM_NOT_REACHED_DEFAULT_CASE_RET();
    }
}


/**
 * @opcode      0xe2
 */
FNIEMOP_DEF(iemOp_loop_Jb)
{
    IEMOP_MNEMONIC(loop_Jb, "loop Jb");
    int8_t i8Imm; IEM_OPCODE_GET_NEXT_S8(&i8Imm);
    IEMOP_HLP_DEFAULT_64BIT_OP_SIZE();

    /** @todo Check out the \#GP case if EIP < CS.Base or EIP > CS.Limit when
     * using the 32-bit operand size override.  How can that be restarted?  See
     * weird pseudo code in intel manual. */

    /* NB: At least Windows for Workgroups 3.11 (NDIS.386) and Windows 95 (NDIS.VXD, IOS)
     * use LOOP $-2 to implement NdisStallExecution and other CPU stall APIs. Shortcutting
     * the loop causes guest crashes, but when logging it's nice to skip a few million
     * lines of useless output. */
#if defined(LOG_ENABLED)
    if ((LogIs3Enabled() || LogIs4Enabled()) && -(int8_t)IEM_GET_INSTR_LEN(pVCpu) == i8Imm)
        switch (pVCpu->iem.s.enmEffAddrMode)
        {
            case IEMMODE_16BIT:
                IEM_MC_BEGIN(IEM_MC_F_NOT_64BIT, 0);
                IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
                IEM_MC_STORE_GREG_U16_CONST(X86_GREG_xCX, 0);
                IEM_MC_ADVANCE_RIP_AND_FINISH();
                IEM_MC_END();
                break;

            case IEMMODE_32BIT:
                IEM_MC_BEGIN(IEM_MC_F_MIN_386, 0);
                IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
                IEM_MC_STORE_GREG_U32_CONST(X86_GREG_xCX, 0);
                IEM_MC_ADVANCE_RIP_AND_FINISH();
                IEM_MC_END();
                break;

            case IEMMODE_64BIT:
                IEM_MC_BEGIN(IEM_MC_F_64BIT, 0);
                IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
                IEM_MC_STORE_GREG_U64_CONST(X86_GREG_xCX, 0);
                IEM_MC_ADVANCE_RIP_AND_FINISH();
                IEM_MC_END();
                break;

            IEM_NOT_REACHED_DEFAULT_CASE_RET();
        }
#endif

    switch (pVCpu->iem.s.enmEffAddrMode)
    {
        case IEMMODE_16BIT:
            IEM_MC_BEGIN(IEM_MC_F_NOT_64BIT, 0);
            IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
            IEM_MC_IF_CX_IS_NOT_ONE() {
                IEM_MC_SUB_GREG_U16(X86_GREG_xCX, 1);
                IEM_MC_REL_JMP_S8_AND_FINISH(i8Imm);
            } IEM_MC_ELSE() {
                IEM_MC_STORE_GREG_U16_CONST(X86_GREG_xCX, 0);
                IEM_MC_ADVANCE_RIP_AND_FINISH();
            } IEM_MC_ENDIF();
            IEM_MC_END();
            break;

        case IEMMODE_32BIT:
            IEM_MC_BEGIN(IEM_MC_F_MIN_386, 0);
            IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
            IEM_MC_IF_ECX_IS_NOT_ONE() {
                IEM_MC_SUB_GREG_U32(X86_GREG_xCX, 1);
                IEM_MC_REL_JMP_S8_AND_FINISH(i8Imm);
            } IEM_MC_ELSE() {
                IEM_MC_STORE_GREG_U32_CONST(X86_GREG_xCX, 0);
                IEM_MC_ADVANCE_RIP_AND_FINISH();
            } IEM_MC_ENDIF();
            IEM_MC_END();
            break;

        case IEMMODE_64BIT:
            IEM_MC_BEGIN(IEM_MC_F_64BIT, 0);
            IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
            IEM_MC_IF_RCX_IS_NOT_ONE() {
                IEM_MC_SUB_GREG_U64(X86_GREG_xCX, 1);
                IEM_MC_REL_JMP_S8_AND_FINISH(i8Imm);
            } IEM_MC_ELSE() {
                IEM_MC_STORE_GREG_U64_CONST(X86_GREG_xCX, 0);
                IEM_MC_ADVANCE_RIP_AND_FINISH();
            } IEM_MC_ENDIF();
            IEM_MC_END();
            break;

        IEM_NOT_REACHED_DEFAULT_CASE_RET();
    }
}


/**
 * @opcode      0xe3
 */
FNIEMOP_DEF(iemOp_jecxz_Jb)
{
    IEMOP_MNEMONIC(jecxz_Jb, "jecxz Jb");
    int8_t i8Imm; IEM_OPCODE_GET_NEXT_S8(&i8Imm);
    IEMOP_HLP_DEFAULT_64BIT_OP_SIZE();

    switch (pVCpu->iem.s.enmEffAddrMode)
    {
        case IEMMODE_16BIT:
            IEM_MC_BEGIN(IEM_MC_F_NOT_64BIT, 0);
            IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
            IEM_MC_IF_CX_IS_NZ() {
                IEM_MC_ADVANCE_RIP_AND_FINISH();
            } IEM_MC_ELSE() {
                IEM_MC_REL_JMP_S8_AND_FINISH(i8Imm);
            } IEM_MC_ENDIF();
            IEM_MC_END();
            break;

        case IEMMODE_32BIT:
            IEM_MC_BEGIN(IEM_MC_F_MIN_386, 0);
            IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
            IEM_MC_IF_ECX_IS_NZ() {
                IEM_MC_ADVANCE_RIP_AND_FINISH();
            } IEM_MC_ELSE() {
                IEM_MC_REL_JMP_S8_AND_FINISH(i8Imm);
            } IEM_MC_ENDIF();
            IEM_MC_END();
            break;

        case IEMMODE_64BIT:
            IEM_MC_BEGIN(IEM_MC_F_64BIT, 0);
            IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
            IEM_MC_IF_RCX_IS_NZ() {
                IEM_MC_ADVANCE_RIP_AND_FINISH();
            } IEM_MC_ELSE() {
                IEM_MC_REL_JMP_S8_AND_FINISH(i8Imm);
            } IEM_MC_ENDIF();
            IEM_MC_END();
            break;

        IEM_NOT_REACHED_DEFAULT_CASE_RET();
    }
}


/**
 * @opcode      0xe4
 * @opfltest    iopl
 */
FNIEMOP_DEF(iemOp_in_AL_Ib)
{
    IEMOP_MNEMONIC(in_AL_Ib, "in AL,Ib");
    uint8_t u8Imm; IEM_OPCODE_GET_NEXT_U8(&u8Imm);
    IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
    IEM_MC_DEFER_TO_CIMPL_3_RET(IEM_CIMPL_F_VMEXIT | IEM_CIMPL_F_IO, RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xAX),
                                iemCImpl_in, u8Imm, 1, 0x80 /* fImm */ | pVCpu->iem.s.enmEffAddrMode);
}


/**
 * @opcode      0xe5
 * @opfltest    iopl
 */
FNIEMOP_DEF(iemOp_in_eAX_Ib)
{
    IEMOP_MNEMONIC(in_eAX_Ib, "in eAX,Ib");
    uint8_t u8Imm; IEM_OPCODE_GET_NEXT_U8(&u8Imm);
    IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
    IEM_MC_DEFER_TO_CIMPL_3_RET(IEM_CIMPL_F_VMEXIT | IEM_CIMPL_F_IO, RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xAX),
                                iemCImpl_in, u8Imm, pVCpu->iem.s.enmEffOpSize == IEMMODE_16BIT ? 2 : 4,
                                0x80 /* fImm */ | pVCpu->iem.s.enmEffAddrMode);
}


/**
 * @opcode      0xe6
 * @opfltest    iopl
 */
FNIEMOP_DEF(iemOp_out_Ib_AL)
{
    IEMOP_MNEMONIC(out_Ib_AL, "out Ib,AL");
    uint8_t u8Imm; IEM_OPCODE_GET_NEXT_U8(&u8Imm);
    IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
    IEM_MC_DEFER_TO_CIMPL_3_RET(IEM_CIMPL_F_VMEXIT | IEM_CIMPL_F_IO, 0,
                                iemCImpl_out, u8Imm, 1, 0x80 /* fImm */ | pVCpu->iem.s.enmEffAddrMode);
}


/**
 * @opcode      0xe7
 * @opfltest    iopl
 */
FNIEMOP_DEF(iemOp_out_Ib_eAX)
{
    IEMOP_MNEMONIC(out_Ib_eAX, "out Ib,eAX");
    uint8_t u8Imm; IEM_OPCODE_GET_NEXT_U8(&u8Imm);
    IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
    IEM_MC_DEFER_TO_CIMPL_3_RET(IEM_CIMPL_F_VMEXIT | IEM_CIMPL_F_IO, 0,
                                iemCImpl_out, u8Imm, pVCpu->iem.s.enmEffOpSize == IEMMODE_16BIT ? 2 : 4,
                                0x80 /* fImm */ | pVCpu->iem.s.enmEffAddrMode);
}


/**
 * @opcode      0xe8
 */
FNIEMOP_DEF(iemOp_call_Jv)
{
    IEMOP_MNEMONIC(call_Jv, "call Jv");
    IEMOP_HLP_DEFAULT_64BIT_OP_SIZE_AND_INTEL_IGNORES_OP_SIZE_PREFIX();
    switch (pVCpu->iem.s.enmEffOpSize)
    {
        case IEMMODE_16BIT:
        {
            IEM_MC_BEGIN(0, 0);
            int16_t i16Imm; IEM_OPCODE_GET_NEXT_S16(&i16Imm);
            IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
            IEM_MC_REL_CALL_S16_AND_FINISH(i16Imm);
            IEM_MC_END();
            break;
        }

        case IEMMODE_32BIT:
        {
            IEM_MC_BEGIN(IEM_MC_F_MIN_386, 0);
            int32_t i32Imm; IEM_OPCODE_GET_NEXT_S32(&i32Imm);
            IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
            IEM_MC_REL_CALL_S32_AND_FINISH(i32Imm);
            IEM_MC_END();
            break;
        }

        case IEMMODE_64BIT:
        {
            IEM_MC_BEGIN(IEM_MC_F_MIN_386, 0);
            int64_t i64Imm; IEM_OPCODE_GET_NEXT_S32_SX_U64((uint64_t *)&i64Imm);
            IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
            IEM_MC_REL_CALL_S64_AND_FINISH(i64Imm);
            IEM_MC_END();
            break;
        }

        IEM_NOT_REACHED_DEFAULT_CASE_RET();
    }
}


/**
 * @opcode      0xe9
 */
FNIEMOP_DEF(iemOp_jmp_Jv)
{
    IEMOP_MNEMONIC(jmp_Jv, "jmp Jv");
    IEMOP_HLP_DEFAULT_64BIT_OP_SIZE_AND_INTEL_IGNORES_OP_SIZE_PREFIX();
    switch (pVCpu->iem.s.enmEffOpSize)
    {
        case IEMMODE_16BIT:
            IEM_MC_BEGIN(0, 0);
            int16_t i16Imm; IEM_OPCODE_GET_NEXT_S16(&i16Imm);
            IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
            IEM_MC_REL_JMP_S16_AND_FINISH(i16Imm);
            IEM_MC_END();
            break;

        case IEMMODE_64BIT:
        case IEMMODE_32BIT:
            IEM_MC_BEGIN(IEM_MC_F_MIN_386, 0);
            int32_t i32Imm; IEM_OPCODE_GET_NEXT_S32(&i32Imm);
            IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
            IEM_MC_REL_JMP_S32_AND_FINISH(i32Imm);
            IEM_MC_END();
            break;

        IEM_NOT_REACHED_DEFAULT_CASE_RET();
    }
}


/**
 * @opcode      0xea
 */
FNIEMOP_DEF(iemOp_jmp_Ap)
{
    IEMOP_MNEMONIC(jmp_Ap, "jmp Ap");
    IEMOP_HLP_NO_64BIT();

    /* Decode the far pointer address and pass it on to the far call C implementation. */
    uint32_t off32Seg;
    if (pVCpu->iem.s.enmEffOpSize != IEMMODE_16BIT)
        IEM_OPCODE_GET_NEXT_U32(&off32Seg);
    else
        IEM_OPCODE_GET_NEXT_U16_ZX_U32(&off32Seg);
    uint16_t u16Sel;  IEM_OPCODE_GET_NEXT_U16(&u16Sel);
    IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
    IEM_MC_DEFER_TO_CIMPL_3_RET(IEM_CIMPL_F_BRANCH_DIRECT | IEM_CIMPL_F_BRANCH_FAR
                                | IEM_CIMPL_F_MODE | IEM_CIMPL_F_RFLAGS | IEM_CIMPL_F_VMEXIT, UINT64_MAX,
                                iemCImpl_FarJmp, u16Sel, off32Seg, pVCpu->iem.s.enmEffOpSize);
    /** @todo make task-switches, ring-switches, ++ return non-zero status */
}


/**
 * @opcode      0xeb
 */
FNIEMOP_DEF(iemOp_jmp_Jb)
{
    IEMOP_MNEMONIC(jmp_Jb, "jmp Jb");
    int8_t i8Imm; IEM_OPCODE_GET_NEXT_S8(&i8Imm);
    IEMOP_HLP_DEFAULT_64BIT_OP_SIZE_AND_INTEL_IGNORES_OP_SIZE_PREFIX();

    IEM_MC_BEGIN(0, 0);
    IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
    IEM_MC_REL_JMP_S8_AND_FINISH(i8Imm);
    IEM_MC_END();
}


/**
 * @opcode      0xec
 * @opfltest    iopl
 */
FNIEMOP_DEF(iemOp_in_AL_DX)
{
    IEMOP_MNEMONIC(in_AL_DX, "in  AL,DX");
    IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
    IEM_MC_DEFER_TO_CIMPL_2_RET(IEM_CIMPL_F_VMEXIT | IEM_CIMPL_F_IO,
                                RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xAX),
                                iemCImpl_in_eAX_DX, 1, pVCpu->iem.s.enmEffAddrMode);
}


/**
 * @opcode      0xed
 * @opfltest    iopl
 */
FNIEMOP_DEF(iemOp_in_eAX_DX)
{
    IEMOP_MNEMONIC(in_eAX_DX, "in  eAX,DX");
    IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
    IEM_MC_DEFER_TO_CIMPL_2_RET(IEM_CIMPL_F_VMEXIT | IEM_CIMPL_F_IO,
                                RT_BIT_64(kIemNativeGstReg_GprFirst + X86_GREG_xAX),
                                iemCImpl_in_eAX_DX, pVCpu->iem.s.enmEffOpSize == IEMMODE_16BIT ? 2 : 4,
                                pVCpu->iem.s.enmEffAddrMode);
}


/**
 * @opcode      0xee
 * @opfltest    iopl
 */
FNIEMOP_DEF(iemOp_out_DX_AL)
{
    IEMOP_MNEMONIC(out_DX_AL, "out DX,AL");
    IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
    IEM_MC_DEFER_TO_CIMPL_2_RET(IEM_CIMPL_F_VMEXIT | IEM_CIMPL_F_IO, 0,
                                iemCImpl_out_DX_eAX, 1, pVCpu->iem.s.enmEffAddrMode);
}


/**
 * @opcode      0xef
 * @opfltest    iopl
 */
FNIEMOP_DEF(iemOp_out_DX_eAX)
{
    IEMOP_MNEMONIC(out_DX_eAX, "out DX,eAX");
    IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
    IEM_MC_DEFER_TO_CIMPL_2_RET(IEM_CIMPL_F_VMEXIT | IEM_CIMPL_F_IO, 0,
                                iemCImpl_out_DX_eAX, pVCpu->iem.s.enmEffOpSize == IEMMODE_16BIT ? 2 : 4,
                                pVCpu->iem.s.enmEffAddrMode);
}


/**
 * @opcode      0xf0
 */
FNIEMOP_DEF(iemOp_lock)
{
    IEMOP_HLP_CLEAR_REX_NOT_BEFORE_OPCODE("lock");
    pVCpu->iem.s.fPrefixes |= IEM_OP_PRF_LOCK;

    uint8_t b; IEM_OPCODE_GET_NEXT_U8(&b);
    return FNIEMOP_CALL(g_apfnOneByteMap[b]);
}


/**
 * @opcode      0xf1
 */
FNIEMOP_DEF(iemOp_int1)
{
    IEMOP_MNEMONIC(int1, "int1"); /* icebp */
    /** @todo Does not generate \#UD on 286, or so they say...  Was allegedly a
     * prefix byte on 8086 and/or/maybe 80286 without meaning according to the 286
     * LOADALL memo.  Needs some testing. */
    IEMOP_HLP_MIN_386();
    /** @todo testcase! */
    IEM_MC_DEFER_TO_CIMPL_2_RET(IEM_CIMPL_F_BRANCH_INDIRECT | IEM_CIMPL_F_BRANCH_FAR | IEM_CIMPL_F_BRANCH_STACK_FAR
                                | IEM_CIMPL_F_MODE | IEM_CIMPL_F_VMEXIT | IEM_CIMPL_F_RFLAGS | IEM_CIMPL_F_END_TB, 0,
                                iemCImpl_int, X86_XCPT_DB, IEMINT_INT1);
}


/**
 * @opcode      0xf2
 */
FNIEMOP_DEF(iemOp_repne)
{
    /* This overrides any previous REPE prefix. */
    pVCpu->iem.s.fPrefixes &= ~IEM_OP_PRF_REPZ;
    IEMOP_HLP_CLEAR_REX_NOT_BEFORE_OPCODE("repne");
    pVCpu->iem.s.fPrefixes |= IEM_OP_PRF_REPNZ;

    /* For the 4 entry opcode tables, REPNZ overrides any previous
       REPZ and operand size prefixes. */
    pVCpu->iem.s.idxPrefix = 3;

    uint8_t b; IEM_OPCODE_GET_NEXT_U8(&b);
    return FNIEMOP_CALL(g_apfnOneByteMap[b]);
}


/**
 * @opcode      0xf3
 */
FNIEMOP_DEF(iemOp_repe)
{
    /* This overrides any previous REPNE prefix. */
    pVCpu->iem.s.fPrefixes &= ~IEM_OP_PRF_REPNZ;
    IEMOP_HLP_CLEAR_REX_NOT_BEFORE_OPCODE("repe");
    pVCpu->iem.s.fPrefixes |= IEM_OP_PRF_REPZ;

    /* For the 4 entry opcode tables, REPNZ overrides any previous
       REPNZ and operand size prefixes. */
    pVCpu->iem.s.idxPrefix = 2;

    uint8_t b; IEM_OPCODE_GET_NEXT_U8(&b);
    return FNIEMOP_CALL(g_apfnOneByteMap[b]);
}


/**
 * @opcode      0xf4
 */
FNIEMOP_DEF(iemOp_hlt)
{
    IEMOP_MNEMONIC(hlt, "hlt");
    IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
    IEM_MC_DEFER_TO_CIMPL_0_RET(IEM_CIMPL_F_END_TB | IEM_CIMPL_F_VMEXIT, 0, iemCImpl_hlt);
}


/**
 * @opcode      0xf5
 * @opflmodify  cf
 */
FNIEMOP_DEF(iemOp_cmc)
{
    IEMOP_MNEMONIC(cmc, "cmc");
    IEM_MC_BEGIN(0, 0);
    IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
    IEM_MC_FLIP_EFL_BIT(X86_EFL_CF);
    IEM_MC_ADVANCE_RIP_AND_FINISH();
    IEM_MC_END();
}


/**
 * Body for of 'inc/dec/not/neg Eb'.
 */
#define IEMOP_BODY_UNARY_Eb(a_bRm, a_fnNormalU8, a_fnLockedU8) \
    if (IEM_IS_MODRM_REG_MODE(a_bRm)) \
    { \
        /* register access */ \
        IEM_MC_BEGIN(0, 0); \
        IEMOP_HLP_DONE_DECODING(); \
        IEM_MC_ARG(uint8_t *,   pu8Dst, 0); \
        IEM_MC_ARG(uint32_t *,  pEFlags, 1); \
        IEM_MC_REF_GREG_U8(pu8Dst, IEM_GET_MODRM_RM(pVCpu, a_bRm)); \
        IEM_MC_REF_EFLAGS(pEFlags); \
        IEM_MC_CALL_VOID_AIMPL_2(a_fnNormalU8, pu8Dst, pEFlags); \
        IEM_MC_ADVANCE_RIP_AND_FINISH(); \
        IEM_MC_END(); \
    } \
    else \
    { \
        /* memory access. */ \
        if (!(pVCpu->iem.s.fPrefixes & IEM_OP_PRF_LOCK) || (pVCpu->iem.s.fExec & IEM_F_X86_DISREGARD_LOCK)) \
        { \
            IEM_MC_BEGIN(0, 0); \
            IEM_MC_ARG(uint8_t *,       pu8Dst,          0); \
            IEM_MC_LOCAL(RTGCPTR, GCPtrEffDst); \
            IEM_MC_LOCAL(uint8_t, bUnmapInfo); \
            \
            IEM_MC_CALC_RM_EFF_ADDR(GCPtrEffDst, a_bRm, 0); \
            IEMOP_HLP_DONE_DECODING(); \
            IEM_MC_MEM_MAP_U8_RW(pu8Dst, bUnmapInfo, pVCpu->iem.s.iEffSeg, GCPtrEffDst); \
            IEM_MC_ARG_LOCAL_EFLAGS(    pEFlags, EFlags, 1); \
            IEM_MC_CALL_VOID_AIMPL_2(a_fnNormalU8, pu8Dst, pEFlags); \
            \
            IEM_MC_MEM_COMMIT_AND_UNMAP_RW(bUnmapInfo); \
            IEM_MC_COMMIT_EFLAGS(EFlags); \
            IEM_MC_ADVANCE_RIP_AND_FINISH(); \
            IEM_MC_END(); \
        } \
        else \
        { \
            IEM_MC_BEGIN(0, 0); \
            IEM_MC_ARG(uint8_t *,       pu8Dst,          0); \
            IEM_MC_LOCAL(RTGCPTR, GCPtrEffDst); \
            IEM_MC_LOCAL(uint8_t, bUnmapInfo); \
            \
            IEM_MC_CALC_RM_EFF_ADDR(GCPtrEffDst, a_bRm, 0); \
            IEMOP_HLP_DONE_DECODING(); \
            IEM_MC_MEM_MAP_U8_ATOMIC(pu8Dst, bUnmapInfo, pVCpu->iem.s.iEffSeg, GCPtrEffDst); \
            IEM_MC_ARG_LOCAL_EFLAGS(    pEFlags, EFlags, 1); \
            IEM_MC_CALL_VOID_AIMPL_2(a_fnLockedU8, pu8Dst, pEFlags); \
            \
            IEM_MC_MEM_COMMIT_AND_UNMAP_ATOMIC(bUnmapInfo); \
            IEM_MC_COMMIT_EFLAGS(EFlags); \
            IEM_MC_ADVANCE_RIP_AND_FINISH(); \
            IEM_MC_END(); \
        } \
    } \
    (void)0


/**
 * Body for 'inc/dec/not/neg Ev' (groups 3 and 5).
 */
#define IEMOP_BODY_UNARY_Ev(a_fnNormalU16, a_fnNormalU32, a_fnNormalU64) \
    if (IEM_IS_MODRM_REG_MODE(bRm)) \
    { \
        /* \
         * Register target \
         */ \
        switch (pVCpu->iem.s.enmEffOpSize) \
        { \
            case IEMMODE_16BIT: \
                IEM_MC_BEGIN(0, 0); \
                IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX(); \
                IEM_MC_ARG(uint16_t *,  pu16Dst, 0); \
                IEM_MC_ARG(uint32_t *,  pEFlags, 1); \
                IEM_MC_REF_GREG_U16(pu16Dst, IEM_GET_MODRM_RM(pVCpu, bRm)); \
                IEM_MC_REF_EFLAGS(pEFlags); \
                IEM_MC_CALL_VOID_AIMPL_2(a_fnNormalU16, pu16Dst, pEFlags); \
                IEM_MC_ADVANCE_RIP_AND_FINISH(); \
                IEM_MC_END(); \
                break; \
            \
            case IEMMODE_32BIT: \
                IEM_MC_BEGIN(IEM_MC_F_MIN_386, 0); \
                IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX(); \
                IEM_MC_ARG(uint32_t *,  pu32Dst, 0); \
                IEM_MC_ARG(uint32_t *,  pEFlags, 1); \
                IEM_MC_REF_GREG_U32(pu32Dst, IEM_GET_MODRM_RM(pVCpu, bRm)); \
                IEM_MC_REF_EFLAGS(pEFlags); \
                IEM_MC_CALL_VOID_AIMPL_2(a_fnNormalU32, pu32Dst, pEFlags); \
                IEM_MC_CLEAR_HIGH_GREG_U64(IEM_GET_MODRM_RM(pVCpu, bRm)); \
                IEM_MC_ADVANCE_RIP_AND_FINISH(); \
                IEM_MC_END(); \
                break; \
            \
            case IEMMODE_64BIT: \
                IEM_MC_BEGIN(IEM_MC_F_64BIT, 0); \
                IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX(); \
                IEM_MC_ARG(uint64_t *,  pu64Dst, 0); \
                IEM_MC_ARG(uint32_t *,  pEFlags, 1); \
                IEM_MC_REF_GREG_U64(pu64Dst, IEM_GET_MODRM_RM(pVCpu, bRm)); \
                IEM_MC_REF_EFLAGS(pEFlags); \
                IEM_MC_CALL_VOID_AIMPL_2(a_fnNormalU64, pu64Dst, pEFlags); \
                IEM_MC_ADVANCE_RIP_AND_FINISH(); \
                IEM_MC_END(); \
                break; \
            \
            IEM_NOT_REACHED_DEFAULT_CASE_RET(); \
        } \
    } \
    else \
    { \
        /* \
         * Memory target. \
         */ \
        if (!(pVCpu->iem.s.fPrefixes & IEM_OP_PRF_LOCK) || (pVCpu->iem.s.fExec & IEM_F_X86_DISREGARD_LOCK)) \
        { \
            switch (pVCpu->iem.s.enmEffOpSize) \
            { \
                case IEMMODE_16BIT: \
                    IEM_MC_BEGIN(0, 0); \
                    IEM_MC_ARG(uint16_t *,      pu16Dst,         0); \
                    IEM_MC_LOCAL(RTGCPTR, GCPtrEffDst); \
                    IEM_MC_LOCAL(uint8_t, bUnmapInfo); \
                    \
                    IEM_MC_CALC_RM_EFF_ADDR(GCPtrEffDst, bRm, 0); \
                    IEMOP_HLP_DONE_DECODING(); \
                    IEM_MC_MEM_MAP_U16_RW(pu16Dst, bUnmapInfo, pVCpu->iem.s.iEffSeg, GCPtrEffDst); \
                    IEM_MC_ARG_LOCAL_EFLAGS(    pEFlags, EFlags, 1); \
                    IEM_MC_CALL_VOID_AIMPL_2(a_fnNormalU16, pu16Dst, pEFlags); \
                    \
                    IEM_MC_MEM_COMMIT_AND_UNMAP_RW(bUnmapInfo); \
                    IEM_MC_COMMIT_EFLAGS(EFlags); \
                    IEM_MC_ADVANCE_RIP_AND_FINISH(); \
                    IEM_MC_END(); \
                    break; \
                \
                case IEMMODE_32BIT: \
                    IEM_MC_BEGIN(IEM_MC_F_MIN_386, 0); \
                    IEM_MC_ARG(uint32_t *,      pu32Dst,         0); \
                    IEM_MC_LOCAL(RTGCPTR, GCPtrEffDst); \
                    IEM_MC_LOCAL(uint8_t, bUnmapInfo); \
                    \
                    IEM_MC_CALC_RM_EFF_ADDR(GCPtrEffDst, bRm, 0); \
                    IEMOP_HLP_DONE_DECODING(); \
                    IEM_MC_MEM_MAP_U32_RW(pu32Dst, bUnmapInfo, pVCpu->iem.s.iEffSeg, GCPtrEffDst); \
                    IEM_MC_ARG_LOCAL_EFLAGS(    pEFlags, EFlags, 1); \
                    IEM_MC_CALL_VOID_AIMPL_2(a_fnNormalU32, pu32Dst, pEFlags); \
                    \
                    IEM_MC_MEM_COMMIT_AND_UNMAP_RW(bUnmapInfo); \
                    IEM_MC_COMMIT_EFLAGS(EFlags); \
                    IEM_MC_ADVANCE_RIP_AND_FINISH(); \
                    IEM_MC_END(); \
                    break; \
                \
                case IEMMODE_64BIT: \
                    IEM_MC_BEGIN(IEM_MC_F_64BIT, 0); \
                    IEM_MC_ARG(uint64_t *,      pu64Dst,         0); \
                    IEM_MC_LOCAL(RTGCPTR, GCPtrEffDst); \
                    IEM_MC_LOCAL(uint8_t, bUnmapInfo); \
                    \
                    IEM_MC_CALC_RM_EFF_ADDR(GCPtrEffDst, bRm, 0); \
                    IEMOP_HLP_DONE_DECODING(); \
                    IEM_MC_MEM_MAP_U64_RW(pu64Dst, bUnmapInfo, pVCpu->iem.s.iEffSeg, GCPtrEffDst); \
                    IEM_MC_ARG_LOCAL_EFLAGS(    pEFlags, EFlags, 1); \
                    IEM_MC_CALL_VOID_AIMPL_2(a_fnNormalU64, pu64Dst, pEFlags); \
                    \
                    IEM_MC_MEM_COMMIT_AND_UNMAP_RW(bUnmapInfo); \
                    IEM_MC_COMMIT_EFLAGS(EFlags); \
                    IEM_MC_ADVANCE_RIP_AND_FINISH(); \
                    IEM_MC_END(); \
                    break; \
                \
                IEM_NOT_REACHED_DEFAULT_CASE_RET(); \
            } \
        } \
        else \
        { \
            (void)0

#define IEMOP_BODY_UNARY_Ev_LOCKED(a_fnLockedU16, a_fnLockedU32, a_fnLockedU64) \
            switch (pVCpu->iem.s.enmEffOpSize) \
            { \
                case IEMMODE_16BIT: \
                    IEM_MC_BEGIN(0, 0); \
                    IEM_MC_ARG(uint16_t *,      pu16Dst,         0); \
                    IEM_MC_LOCAL(RTGCPTR, GCPtrEffDst); \
                    IEM_MC_LOCAL(uint8_t, bUnmapInfo); \
                    \
                    IEM_MC_CALC_RM_EFF_ADDR(GCPtrEffDst, bRm, 0); \
                    IEMOP_HLP_DONE_DECODING(); \
                    IEM_MC_MEM_MAP_U16_ATOMIC(pu16Dst, bUnmapInfo, pVCpu->iem.s.iEffSeg, GCPtrEffDst); \
                    IEM_MC_ARG_LOCAL_EFLAGS(    pEFlags, EFlags, 1); \
                    IEM_MC_CALL_VOID_AIMPL_2(a_fnLockedU16, pu16Dst, pEFlags); \
                    \
                    IEM_MC_MEM_COMMIT_AND_UNMAP_ATOMIC(bUnmapInfo); \
                    IEM_MC_COMMIT_EFLAGS(EFlags); \
                    IEM_MC_ADVANCE_RIP_AND_FINISH(); \
                    IEM_MC_END(); \
                    break; \
                \
                case IEMMODE_32BIT: \
                    IEM_MC_BEGIN(IEM_MC_F_MIN_386, 0); \
                    IEM_MC_ARG(uint32_t *,      pu32Dst,         0); \
                    IEM_MC_LOCAL(RTGCPTR, GCPtrEffDst); \
                    IEM_MC_LOCAL(uint8_t, bUnmapInfo); \
                    \
                    IEM_MC_CALC_RM_EFF_ADDR(GCPtrEffDst, bRm, 0); \
                    IEMOP_HLP_DONE_DECODING(); \
                    IEM_MC_MEM_MAP_U32_ATOMIC(pu32Dst, bUnmapInfo, pVCpu->iem.s.iEffSeg, GCPtrEffDst); \
                    IEM_MC_ARG_LOCAL_EFLAGS(    pEFlags, EFlags, 1); \
                    IEM_MC_CALL_VOID_AIMPL_2(a_fnLockedU32, pu32Dst, pEFlags); \
                    \
                    IEM_MC_MEM_COMMIT_AND_UNMAP_ATOMIC(bUnmapInfo); \
                    IEM_MC_COMMIT_EFLAGS(EFlags); \
                    IEM_MC_ADVANCE_RIP_AND_FINISH(); \
                    IEM_MC_END(); \
                    break; \
                \
                case IEMMODE_64BIT: \
                    IEM_MC_BEGIN(IEM_MC_F_64BIT, 0); \
                    IEM_MC_ARG(uint64_t *,      pu64Dst,         0); \
                    IEM_MC_LOCAL(RTGCPTR, GCPtrEffDst); \
                    IEM_MC_LOCAL(uint8_t, bUnmapInfo); \
                    \
                    IEM_MC_CALC_RM_EFF_ADDR(GCPtrEffDst, bRm, 0); \
                    IEMOP_HLP_DONE_DECODING(); \
                    IEM_MC_MEM_MAP_U64_ATOMIC(pu64Dst, bUnmapInfo, pVCpu->iem.s.iEffSeg, GCPtrEffDst); \
                    IEM_MC_ARG_LOCAL_EFLAGS(    pEFlags, EFlags, 1); \
                    IEM_MC_CALL_VOID_AIMPL_2(a_fnLockedU64, pu64Dst, pEFlags); \
                    \
                    IEM_MC_MEM_COMMIT_AND_UNMAP_ATOMIC(bUnmapInfo); \
                    IEM_MC_COMMIT_EFLAGS(EFlags); \
                    IEM_MC_ADVANCE_RIP_AND_FINISH(); \
                    IEM_MC_END(); \
                    break; \
                \
                IEM_NOT_REACHED_DEFAULT_CASE_RET(); \
            } \
        } \
    } \
    (void)0


/**
 * @opmaps      grp3_f6
 * @opcode      /0
 * @opflclass   logical
 * @todo also /1
 */
FNIEMOP_DEF_1(iemOp_grp3_test_Eb_Ib, uint8_t, bRm)
{
    IEMOP_MNEMONIC(test_Eb_Ib, "test Eb,Ib");
    IEMOP_VERIFICATION_UNDEFINED_EFLAGS(X86_EFL_AF);
    IEMOP_BODY_BINARY_Eb_Ib_RO(test, RT_ARCH_VAL_AMD64 | RT_ARCH_VAL_ARM64);
}


/* Body for opcode 0xf6 variations /4, /5, /6 and /7. */
#define IEMOP_GRP3_MUL_DIV_EB(bRm, a_pfnU8Expr) \
    PFNIEMAIMPLMULDIVU8 const pfnU8 = (a_pfnU8Expr); \
    if (IEM_IS_MODRM_REG_MODE(bRm)) \
    { \
        /* register access */ \
        IEM_MC_BEGIN(0, 0); \
        IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX(); \
        IEM_MC_ARG(uint16_t *,      pu16AX,     0); \
        IEM_MC_ARG(uint8_t,         u8Value,    1); \
        IEM_MC_ARG(uint32_t *,      pEFlags,    2); \
        \
        IEM_MC_FETCH_GREG_U8(u8Value, IEM_GET_MODRM_RM(pVCpu, bRm)); \
        IEM_MC_REF_GREG_U16(pu16AX, X86_GREG_xAX); \
        IEM_MC_REF_EFLAGS(pEFlags); \
        IEM_MC_CALL_AIMPL_3(int32_t, rc, pfnU8, pu16AX, u8Value, pEFlags); \
        IEM_MC_IF_LOCAL_IS_Z(rc) { \
            IEM_MC_ADVANCE_RIP_AND_FINISH(); \
        } IEM_MC_ELSE() { \
            IEM_MC_RAISE_DIVIDE_ERROR(); \
        } IEM_MC_ENDIF(); \
        \
        IEM_MC_END(); \
    } \
    else \
    { \
        /* memory access. */ \
        IEM_MC_BEGIN(0, 0); \
        IEM_MC_ARG(uint16_t *,      pu16AX,     0); \
        IEM_MC_ARG(uint8_t,         u8Value,    1); \
        IEM_MC_ARG(uint32_t *,      pEFlags,    2); \
        IEM_MC_LOCAL(RTGCPTR, GCPtrEffDst); \
        \
        IEM_MC_CALC_RM_EFF_ADDR(GCPtrEffDst, bRm, 0); \
        IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX(); \
        IEM_MC_FETCH_MEM_U8(u8Value, pVCpu->iem.s.iEffSeg, GCPtrEffDst); \
        IEM_MC_REF_GREG_U16(pu16AX, X86_GREG_xAX); \
        IEM_MC_REF_EFLAGS(pEFlags); \
        IEM_MC_CALL_AIMPL_3(int32_t, rc, pfnU8, pu16AX, u8Value, pEFlags); \
        IEM_MC_IF_LOCAL_IS_Z(rc) { \
            IEM_MC_ADVANCE_RIP_AND_FINISH(); \
        } IEM_MC_ELSE() { \
            IEM_MC_RAISE_DIVIDE_ERROR(); \
        } IEM_MC_ENDIF(); \
        \
        IEM_MC_END(); \
    } (void)0


/* Body for opcode 0xf7 variant /4, /5, /6 and /7. */
#define IEMOP_BODY_GRP3_MUL_DIV_EV(bRm, a_pImplExpr) \
    PCIEMOPMULDIVSIZES const pImpl = (a_pImplExpr); \
    if (IEM_IS_MODRM_REG_MODE(bRm)) \
    { \
        /* register access */ \
        switch (pVCpu->iem.s.enmEffOpSize) \
        { \
            case IEMMODE_16BIT: \
                IEM_MC_BEGIN(0, 0); \
                IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX(); \
                IEM_MC_ARG(uint16_t *,      pu16AX,     0); \
                IEM_MC_ARG(uint16_t *,      pu16DX,     1); \
                IEM_MC_ARG(uint16_t,        u16Value,   2); \
                IEM_MC_ARG(uint32_t *,      pEFlags,    3); \
                \
                IEM_MC_FETCH_GREG_U16(u16Value, IEM_GET_MODRM_RM(pVCpu, bRm)); \
                IEM_MC_REF_GREG_U16(pu16AX, X86_GREG_xAX); \
                IEM_MC_REF_GREG_U16(pu16DX, X86_GREG_xDX); \
                IEM_MC_REF_EFLAGS(pEFlags); \
                IEM_MC_CALL_AIMPL_4(int32_t, rc, pImpl->pfnU16, pu16AX, pu16DX, u16Value, pEFlags); \
                IEM_MC_IF_LOCAL_IS_Z(rc) { \
                    IEM_MC_ADVANCE_RIP_AND_FINISH(); \
                } IEM_MC_ELSE() { \
                    IEM_MC_RAISE_DIVIDE_ERROR(); \
                } IEM_MC_ENDIF(); \
                \
                IEM_MC_END(); \
                break; \
                \
            case IEMMODE_32BIT: \
                IEM_MC_BEGIN(IEM_MC_F_MIN_386, 0); \
                IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX(); \
                IEM_MC_ARG(uint32_t *,      pu32AX,     0); \
                IEM_MC_ARG(uint32_t *,      pu32DX,     1); \
                IEM_MC_ARG(uint32_t,        u32Value,   2); \
                IEM_MC_ARG(uint32_t *,      pEFlags,    3); \
                \
                IEM_MC_FETCH_GREG_U32(u32Value, IEM_GET_MODRM_RM(pVCpu, bRm)); \
                IEM_MC_REF_GREG_U32(pu32AX, X86_GREG_xAX); \
                IEM_MC_REF_GREG_U32(pu32DX, X86_GREG_xDX); \
                IEM_MC_REF_EFLAGS(pEFlags); \
                IEM_MC_CALL_AIMPL_4(int32_t, rc, pImpl->pfnU32, pu32AX, pu32DX, u32Value, pEFlags); \
                IEM_MC_IF_LOCAL_IS_Z(rc) { \
                    IEM_MC_CLEAR_HIGH_GREG_U64(X86_GREG_xAX); \
                    IEM_MC_CLEAR_HIGH_GREG_U64(X86_GREG_xDX); \
                    IEM_MC_ADVANCE_RIP_AND_FINISH(); \
                } IEM_MC_ELSE() { \
                    IEM_MC_RAISE_DIVIDE_ERROR(); \
                } IEM_MC_ENDIF(); \
                \
                IEM_MC_END(); \
                break; \
                \
            case IEMMODE_64BIT: \
                IEM_MC_BEGIN(IEM_MC_F_64BIT, 0); \
                IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX(); \
                IEM_MC_ARG(uint64_t *,      pu64AX,     0); \
                IEM_MC_ARG(uint64_t *,      pu64DX,     1); \
                IEM_MC_ARG(uint64_t,        u64Value,   2); \
                IEM_MC_ARG(uint32_t *,      pEFlags,    3); \
                \
                IEM_MC_FETCH_GREG_U64(u64Value, IEM_GET_MODRM_RM(pVCpu, bRm)); \
                IEM_MC_REF_GREG_U64(pu64AX, X86_GREG_xAX); \
                IEM_MC_REF_GREG_U64(pu64DX, X86_GREG_xDX); \
                IEM_MC_REF_EFLAGS(pEFlags); \
                IEM_MC_CALL_AIMPL_4(int32_t, rc, pImpl->pfnU64, pu64AX, pu64DX, u64Value, pEFlags); \
                IEM_MC_IF_LOCAL_IS_Z(rc) { \
                    IEM_MC_ADVANCE_RIP_AND_FINISH(); \
                } IEM_MC_ELSE() { \
                    IEM_MC_RAISE_DIVIDE_ERROR(); \
                } IEM_MC_ENDIF(); \
                \
                IEM_MC_END(); \
                break; \
                \
            IEM_NOT_REACHED_DEFAULT_CASE_RET(); \
        } \
    } \
    else \
    { \
        /* memory access. */ \
        switch (pVCpu->iem.s.enmEffOpSize) \
        { \
            case IEMMODE_16BIT: \
                IEM_MC_BEGIN(0, 0); \
                IEM_MC_ARG(uint16_t *,      pu16AX,     0); \
                IEM_MC_ARG(uint16_t *,      pu16DX,     1); \
                IEM_MC_ARG(uint16_t,        u16Value,   2); \
                IEM_MC_ARG(uint32_t *,      pEFlags,    3); \
                IEM_MC_LOCAL(RTGCPTR, GCPtrEffDst); \
                \
                IEM_MC_CALC_RM_EFF_ADDR(GCPtrEffDst, bRm, 0); \
                IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX(); \
                IEM_MC_FETCH_MEM_U16(u16Value, pVCpu->iem.s.iEffSeg, GCPtrEffDst); \
                IEM_MC_REF_GREG_U16(pu16AX, X86_GREG_xAX); \
                IEM_MC_REF_GREG_U16(pu16DX, X86_GREG_xDX); \
                IEM_MC_REF_EFLAGS(pEFlags); \
                IEM_MC_CALL_AIMPL_4(int32_t, rc, pImpl->pfnU16, pu16AX, pu16DX, u16Value, pEFlags); \
                IEM_MC_IF_LOCAL_IS_Z(rc) { \
                    IEM_MC_ADVANCE_RIP_AND_FINISH(); \
                } IEM_MC_ELSE() { \
                    IEM_MC_RAISE_DIVIDE_ERROR(); \
                } IEM_MC_ENDIF(); \
                \
                IEM_MC_END(); \
                break; \
                \
            case IEMMODE_32BIT: \
                IEM_MC_BEGIN(IEM_MC_F_MIN_386, 0); \
                IEM_MC_ARG(uint32_t *,      pu32AX,     0); \
                IEM_MC_ARG(uint32_t *,      pu32DX,     1); \
                IEM_MC_ARG(uint32_t,        u32Value,   2); \
                IEM_MC_ARG(uint32_t *,      pEFlags,    3); \
                IEM_MC_LOCAL(RTGCPTR, GCPtrEffDst); \
                \
                IEM_MC_CALC_RM_EFF_ADDR(GCPtrEffDst, bRm, 0); \
                IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX(); \
                IEM_MC_FETCH_MEM_U32(u32Value, pVCpu->iem.s.iEffSeg, GCPtrEffDst); \
                IEM_MC_REF_GREG_U32(pu32AX, X86_GREG_xAX); \
                IEM_MC_REF_GREG_U32(pu32DX, X86_GREG_xDX); \
                IEM_MC_REF_EFLAGS(pEFlags); \
                IEM_MC_CALL_AIMPL_4(int32_t, rc, pImpl->pfnU32, pu32AX, pu32DX, u32Value, pEFlags); \
                IEM_MC_IF_LOCAL_IS_Z(rc) { \
                    IEM_MC_CLEAR_HIGH_GREG_U64(X86_GREG_xAX); \
                    IEM_MC_CLEAR_HIGH_GREG_U64(X86_GREG_xDX); \
                    IEM_MC_ADVANCE_RIP_AND_FINISH(); \
                } IEM_MC_ELSE() { \
                    IEM_MC_RAISE_DIVIDE_ERROR(); \
                } IEM_MC_ENDIF(); \
                \
                IEM_MC_END(); \
                break; \
                \
            case IEMMODE_64BIT: \
                IEM_MC_BEGIN(IEM_MC_F_64BIT, 0); \
                IEM_MC_ARG(uint64_t *,      pu64AX,     0); \
                IEM_MC_ARG(uint64_t *,      pu64DX,     1); \
                IEM_MC_ARG(uint64_t,        u64Value,   2); \
                IEM_MC_ARG(uint32_t *,      pEFlags,    3); \
                IEM_MC_LOCAL(RTGCPTR, GCPtrEffDst); \
                \
                IEM_MC_CALC_RM_EFF_ADDR(GCPtrEffDst, bRm, 0); \
                IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX(); \
                IEM_MC_FETCH_MEM_U64(u64Value, pVCpu->iem.s.iEffSeg, GCPtrEffDst); \
                IEM_MC_REF_GREG_U64(pu64AX, X86_GREG_xAX); \
                IEM_MC_REF_GREG_U64(pu64DX, X86_GREG_xDX); \
                IEM_MC_REF_EFLAGS(pEFlags); \
                IEM_MC_CALL_AIMPL_4(int32_t, rc, pImpl->pfnU64, pu64AX, pu64DX, u64Value, pEFlags); \
                IEM_MC_IF_LOCAL_IS_Z(rc) { \
                    IEM_MC_ADVANCE_RIP_AND_FINISH(); \
                } IEM_MC_ELSE() { \
                    IEM_MC_RAISE_DIVIDE_ERROR(); \
                } IEM_MC_ENDIF(); \
                \
                IEM_MC_END(); \
                break; \
                \
            IEM_NOT_REACHED_DEFAULT_CASE_RET(); \
        } \
    } (void)0


/**
 * @opmaps      grp3_f6
 * @opcode      /2
 * @opflclass   unchanged
 */
FNIEMOP_DEF_1(iemOp_grp3_not_Eb, uint8_t, bRm)
{
/** @todo does not modify EFLAGS. */
    IEMOP_MNEMONIC(not_Eb, "not Eb");
    IEMOP_BODY_UNARY_Eb(bRm, iemAImpl_not_u8, iemAImpl_not_u8_locked);
}


/**
 * @opmaps      grp3_f6
 * @opcode      /3
 * @opflclass   arithmetic
 */
FNIEMOP_DEF_1(iemOp_grp3_neg_Eb, uint8_t, bRm)
{
    IEMOP_MNEMONIC(net_Eb, "neg Eb");
    IEMOP_BODY_UNARY_Eb(bRm, iemAImpl_neg_u8, iemAImpl_neg_u8_locked);
}


/**
 * @opcode      0xf6
 */
FNIEMOP_DEF(iemOp_Grp3_Eb)
{
    uint8_t bRm; IEM_OPCODE_GET_NEXT_U8(&bRm);
    switch (IEM_GET_MODRM_REG_8(bRm))
    {
        case 0:
            return FNIEMOP_CALL_1(iemOp_grp3_test_Eb_Ib, bRm);
        case 1:
            return FNIEMOP_CALL_1(iemOp_grp3_test_Eb_Ib, bRm);
        case 2:
            return FNIEMOP_CALL_1(iemOp_grp3_not_Eb, bRm);
        case 3:
            return FNIEMOP_CALL_1(iemOp_grp3_neg_Eb, bRm);
        case 4:
        {
            /**
             * @opdone
             * @opmaps      grp3_f6
             * @opcode      /4
             * @opflclass   multiply
             */
            IEMOP_MNEMONIC(mul_Eb, "mul Eb");
            IEMOP_VERIFICATION_UNDEFINED_EFLAGS(X86_EFL_SF | X86_EFL_ZF | X86_EFL_AF | X86_EFL_PF);
            IEMOP_GRP3_MUL_DIV_EB(bRm, IEMTARGETCPU_EFL_BEHAVIOR_SELECT(g_iemAImpl_mul_u8_eflags));
            break;
        }
        case 5:
        {
            /**
             * @opdone
             * @opmaps      grp3_f6
             * @opcode      /5
             * @opflclass   multiply
             */
            IEMOP_MNEMONIC(imul_Eb, "imul Eb");
            IEMOP_VERIFICATION_UNDEFINED_EFLAGS(X86_EFL_SF | X86_EFL_ZF | X86_EFL_AF | X86_EFL_PF);
            IEMOP_GRP3_MUL_DIV_EB(bRm, IEMTARGETCPU_EFL_BEHAVIOR_SELECT(g_iemAImpl_imul_u8_eflags));
            break;
        }
        case 6:
        {
            /**
             * @opdone
             * @opmaps      grp3_f6
             * @opcode      /6
             * @opflclass   division
             */
            IEMOP_MNEMONIC(div_Eb, "div Eb");
            IEMOP_VERIFICATION_UNDEFINED_EFLAGS(X86_EFL_SF | X86_EFL_ZF | X86_EFL_AF | X86_EFL_PF | X86_EFL_OF | X86_EFL_CF);
            IEMOP_GRP3_MUL_DIV_EB(bRm, IEMTARGETCPU_EFL_BEHAVIOR_SELECT(g_iemAImpl_div_u8_eflags));
            break;
        }
        case 7:
        {
            /**
             * @opdone
             * @opmaps      grp3_f6
             * @opcode      /7
             * @opflclass   division
             */
            IEMOP_MNEMONIC(idiv_Eb, "idiv Eb");
            IEMOP_VERIFICATION_UNDEFINED_EFLAGS(X86_EFL_SF | X86_EFL_ZF | X86_EFL_AF | X86_EFL_PF | X86_EFL_OF | X86_EFL_CF);
            IEMOP_GRP3_MUL_DIV_EB(bRm, IEMTARGETCPU_EFL_BEHAVIOR_SELECT(g_iemAImpl_idiv_u8_eflags));
            break;
        }
        IEM_NOT_REACHED_DEFAULT_CASE_RET();
    }
}


/**
 * @opmaps      grp3_f7
 * @opcode      /0
 * @opflclass   logical
 */
FNIEMOP_DEF_1(iemOp_grp3_test_Ev_Iz, uint8_t, bRm)
{
    IEMOP_MNEMONIC(test_Ev_Iv, "test Ev,Iv");
    IEMOP_VERIFICATION_UNDEFINED_EFLAGS(X86_EFL_AF);
    IEMOP_BODY_BINARY_Ev_Iz_RO(test, RT_ARCH_VAL_AMD64 | RT_ARCH_VAL_ARM64);
}


/**
 * @opmaps      grp3_f7
 * @opcode      /2
 * @opflclass   unchanged
 */
FNIEMOP_DEF_1(iemOp_grp3_not_Ev, uint8_t, bRm)
{
/** @todo does not modify EFLAGS  */
    IEMOP_MNEMONIC(not_Ev, "not Ev");
    IEMOP_BODY_UNARY_Ev(       iemAImpl_not_u16,        iemAImpl_not_u32,        iemAImpl_not_u64);
    IEMOP_BODY_UNARY_Ev_LOCKED(iemAImpl_not_u16_locked, iemAImpl_not_u32_locked, iemAImpl_not_u64_locked);
}


/**
 * @opmaps      grp3_f7
 * @opcode      /3
 * @opflclass   arithmetic
 */
FNIEMOP_DEF_1(iemOp_grp3_neg_Ev, uint8_t, bRm)
{
    IEMOP_MNEMONIC(neg_Ev, "neg Ev");
    IEMOP_BODY_UNARY_Ev(       iemAImpl_neg_u16,        iemAImpl_neg_u32,        iemAImpl_neg_u64);
    IEMOP_BODY_UNARY_Ev_LOCKED(iemAImpl_neg_u16_locked, iemAImpl_neg_u32_locked, iemAImpl_neg_u64_locked);
}


/**
 * @opmaps      grp3_f7
 * @opcode      /4
 * @opflclass   multiply
 */
FNIEMOP_DEF_1(iemOp_grp3_mul_Ev, uint8_t, bRm)
{
    IEMOP_MNEMONIC(mul_Ev, "mul Ev");
    IEMOP_VERIFICATION_UNDEFINED_EFLAGS(X86_EFL_SF | X86_EFL_ZF | X86_EFL_AF | X86_EFL_PF);
    IEMOP_BODY_GRP3_MUL_DIV_EV(bRm, IEMTARGETCPU_EFL_BEHAVIOR_SELECT(g_iemAImpl_mul_eflags));
}


/**
 * @opmaps      grp3_f7
 * @opcode      /5
 * @opflclass   multiply
 */
FNIEMOP_DEF_1(iemOp_grp3_imul_Ev, uint8_t, bRm)
{
    IEMOP_MNEMONIC(imul_Ev, "imul Ev");
    IEMOP_VERIFICATION_UNDEFINED_EFLAGS(X86_EFL_SF | X86_EFL_ZF | X86_EFL_AF | X86_EFL_PF);
    IEMOP_BODY_GRP3_MUL_DIV_EV(bRm, IEMTARGETCPU_EFL_BEHAVIOR_SELECT(g_iemAImpl_imul_eflags));
}


/**
 * @opmaps      grp3_f7
 * @opcode      /6
 * @opflclass   division
 */
FNIEMOP_DEF_1(iemOp_grp3_div_Ev, uint8_t, bRm)
{
    IEMOP_MNEMONIC(div_Ev, "div Ev");
    IEMOP_VERIFICATION_UNDEFINED_EFLAGS(X86_EFL_SF | X86_EFL_ZF | X86_EFL_AF | X86_EFL_PF | X86_EFL_OF | X86_EFL_CF);
    IEMOP_BODY_GRP3_MUL_DIV_EV(bRm, IEMTARGETCPU_EFL_BEHAVIOR_SELECT(g_iemAImpl_div_eflags));
}


/**
 * @opmaps      grp3_f7
 * @opcode      /7
 * @opflclass   division
 */
FNIEMOP_DEF_1(iemOp_grp3_idiv_Ev, uint8_t, bRm)
{
    IEMOP_MNEMONIC(idiv_Ev, "idiv Ev");
    IEMOP_VERIFICATION_UNDEFINED_EFLAGS(X86_EFL_SF | X86_EFL_ZF | X86_EFL_AF | X86_EFL_PF | X86_EFL_OF | X86_EFL_CF);
    IEMOP_BODY_GRP3_MUL_DIV_EV(bRm, IEMTARGETCPU_EFL_BEHAVIOR_SELECT(g_iemAImpl_idiv_eflags));
}


/**
 * @opcode      0xf7
 */
FNIEMOP_DEF(iemOp_Grp3_Ev)
{
    uint8_t bRm; IEM_OPCODE_GET_NEXT_U8(&bRm);
    switch (IEM_GET_MODRM_REG_8(bRm))
    {
        case 0: return FNIEMOP_CALL_1(iemOp_grp3_test_Ev_Iz, bRm);
        case 1: return FNIEMOP_CALL_1(iemOp_grp3_test_Ev_Iz, bRm);
        case 2: return FNIEMOP_CALL_1(iemOp_grp3_not_Ev, bRm);
        case 3: return FNIEMOP_CALL_1(iemOp_grp3_neg_Ev, bRm);
        case 4: return FNIEMOP_CALL_1(iemOp_grp3_mul_Ev, bRm);
        case 5: return FNIEMOP_CALL_1(iemOp_grp3_imul_Ev, bRm);
        case 6: return FNIEMOP_CALL_1(iemOp_grp3_div_Ev, bRm);
        case 7: return FNIEMOP_CALL_1(iemOp_grp3_idiv_Ev, bRm);
        IEM_NOT_REACHED_DEFAULT_CASE_RET();
    }
}


/**
 * @opcode      0xf8
 * @opflmodify  cf
 * @opflclear   cf
 */
FNIEMOP_DEF(iemOp_clc)
{
    IEMOP_MNEMONIC(clc, "clc");
    IEM_MC_BEGIN(0, 0);
    IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
    IEM_MC_CLEAR_EFL_BIT(X86_EFL_CF);
    IEM_MC_ADVANCE_RIP_AND_FINISH();
    IEM_MC_END();
}


/**
 * @opcode      0xf9
 * @opflmodify  cf
 * @opflset     cf
 */
FNIEMOP_DEF(iemOp_stc)
{
    IEMOP_MNEMONIC(stc, "stc");
    IEM_MC_BEGIN(0, 0);
    IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
    IEM_MC_SET_EFL_BIT(X86_EFL_CF);
    IEM_MC_ADVANCE_RIP_AND_FINISH();
    IEM_MC_END();
}


/**
 * @opcode      0xfa
 * @opfltest    iopl,vm
 * @opflmodify  if,vif
 */
FNIEMOP_DEF(iemOp_cli)
{
    IEMOP_MNEMONIC(cli, "cli");
    IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
    IEM_MC_DEFER_TO_CIMPL_0_RET(IEM_CIMPL_F_RFLAGS | IEM_CIMPL_F_VMEXIT | IEM_CIMPL_F_CHECK_IRQ_BEFORE, 0, iemCImpl_cli);
}


/**
 * @opcode      0xfb
 * @opfltest    iopl,vm
 * @opflmodify  if,vif
 */
FNIEMOP_DEF(iemOp_sti)
{
    IEMOP_MNEMONIC(sti, "sti");
    IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
    IEM_MC_DEFER_TO_CIMPL_0_RET(  IEM_CIMPL_F_RFLAGS | IEM_CIMPL_F_CHECK_IRQ_AFTER
                                | IEM_CIMPL_F_VMEXIT | IEM_CIMPL_F_INHIBIT_SHADOW, 0, iemCImpl_sti);
}


/**
 * @opcode      0xfc
 * @opflmodify  df
 * @opflclear   df
 */
FNIEMOP_DEF(iemOp_cld)
{
    IEMOP_MNEMONIC(cld, "cld");
    IEM_MC_BEGIN(0, 0);
    IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
    IEM_MC_CLEAR_EFL_BIT(X86_EFL_DF);
    IEM_MC_ADVANCE_RIP_AND_FINISH();
    IEM_MC_END();
}


/**
 * @opcode      0xfd
 * @opflmodify  df
 * @opflset     df
 */
FNIEMOP_DEF(iemOp_std)
{
    IEMOP_MNEMONIC(std, "std");
    IEM_MC_BEGIN(0, 0);
    IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
    IEM_MC_SET_EFL_BIT(X86_EFL_DF);
    IEM_MC_ADVANCE_RIP_AND_FINISH();
    IEM_MC_END();
}


/**
 * @opmaps      grp4
 * @opcode      /0
 * @opflclass   incdec
 */
FNIEMOP_DEF_1(iemOp_Grp4_inc_Eb, uint8_t, bRm)
{
    IEMOP_MNEMONIC(inc_Eb, "inc Eb");
    IEMOP_BODY_UNARY_Eb(bRm, iemAImpl_inc_u8, iemAImpl_inc_u8_locked);
}


/**
 * @opmaps      grp4
 * @opcode      /1
 * @opflclass   incdec
 */
FNIEMOP_DEF_1(iemOp_Grp4_dec_Eb, uint8_t, bRm)
{
    IEMOP_MNEMONIC(dec_Eb, "dec Eb");
    IEMOP_BODY_UNARY_Eb(bRm, iemAImpl_dec_u8, iemAImpl_dec_u8_locked);
}


/**
 * @opcode      0xfe
 */
FNIEMOP_DEF(iemOp_Grp4)
{
    uint8_t bRm; IEM_OPCODE_GET_NEXT_U8(&bRm);
    switch (IEM_GET_MODRM_REG_8(bRm))
    {
        case 0: return FNIEMOP_CALL_1(iemOp_Grp4_inc_Eb, bRm);
        case 1: return FNIEMOP_CALL_1(iemOp_Grp4_dec_Eb, bRm);
        default:
            /** @todo is the eff-addr decoded? */
            IEMOP_MNEMONIC(grp4_ud, "grp4-ud");
            IEMOP_RAISE_INVALID_OPCODE_RET();
    }
}

/**
 * @opmaps      grp5
 * @opcode      /0
 * @opflclass   incdec
 */
FNIEMOP_DEF_1(iemOp_Grp5_inc_Ev, uint8_t, bRm)
{
    IEMOP_MNEMONIC(inc_Ev, "inc Ev");
    IEMOP_BODY_UNARY_Ev(       iemAImpl_inc_u16,        iemAImpl_inc_u32,        iemAImpl_inc_u64);
    IEMOP_BODY_UNARY_Ev_LOCKED(iemAImpl_inc_u16_locked, iemAImpl_inc_u32_locked, iemAImpl_inc_u64_locked);
}


/**
 * @opmaps      grp5
 * @opcode      /1
 * @opflclass   incdec
 */
FNIEMOP_DEF_1(iemOp_Grp5_dec_Ev, uint8_t, bRm)
{
    IEMOP_MNEMONIC(dec_Ev, "dec Ev");
    IEMOP_BODY_UNARY_Ev(       iemAImpl_dec_u16,        iemAImpl_dec_u32,        iemAImpl_dec_u64);
    IEMOP_BODY_UNARY_Ev_LOCKED(iemAImpl_dec_u16_locked, iemAImpl_dec_u32_locked, iemAImpl_dec_u64_locked);
}


/**
 * Opcode 0xff /2.
 * @param   bRm             The RM byte.
 */
FNIEMOP_DEF_1(iemOp_Grp5_calln_Ev, uint8_t, bRm)
{
    IEMOP_MNEMONIC(calln_Ev, "calln Ev");
    IEMOP_HLP_DEFAULT_64BIT_OP_SIZE_AND_INTEL_IGNORES_OP_SIZE_PREFIX();

    if (IEM_IS_MODRM_REG_MODE(bRm))
    {
        /* The new RIP is taken from a register. */
        switch (pVCpu->iem.s.enmEffOpSize)
        {
            case IEMMODE_16BIT:
                IEM_MC_BEGIN(0, 0);
                IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
                IEM_MC_LOCAL(uint16_t, u16Target);
                IEM_MC_FETCH_GREG_U16(u16Target, IEM_GET_MODRM_RM(pVCpu, bRm));
                IEM_MC_IND_CALL_U16_AND_FINISH(u16Target);
                IEM_MC_END();
                break;

            case IEMMODE_32BIT:
                IEM_MC_BEGIN(IEM_MC_F_MIN_386, 0);
                IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
                IEM_MC_LOCAL(uint32_t, u32Target);
                IEM_MC_FETCH_GREG_U32(u32Target, IEM_GET_MODRM_RM(pVCpu, bRm));
                IEM_MC_IND_CALL_U32_AND_FINISH(u32Target);
                IEM_MC_END();
                break;

            case IEMMODE_64BIT:
                IEM_MC_BEGIN(IEM_MC_F_64BIT, 0);
                IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
                IEM_MC_LOCAL(uint64_t, u64Target);
                IEM_MC_FETCH_GREG_U64(u64Target, IEM_GET_MODRM_RM(pVCpu, bRm));
                IEM_MC_IND_CALL_U64_AND_FINISH(u64Target);
                IEM_MC_END();
                break;

            IEM_NOT_REACHED_DEFAULT_CASE_RET();
        }
    }
    else
    {
        /* The new RIP is taken from memory. */
        switch (pVCpu->iem.s.enmEffOpSize)
        {
            case IEMMODE_16BIT:
                IEM_MC_BEGIN(0, 0);
                IEM_MC_LOCAL(RTGCPTR, GCPtrEffSrc);
                IEM_MC_CALC_RM_EFF_ADDR(GCPtrEffSrc, bRm, 0);
                IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
                IEM_MC_LOCAL(uint16_t,  u16Target);
                IEM_MC_FETCH_MEM_U16(u16Target, pVCpu->iem.s.iEffSeg, GCPtrEffSrc);
                IEM_MC_IND_CALL_U16_AND_FINISH(u16Target);
                IEM_MC_END();
                break;

            case IEMMODE_32BIT:
                IEM_MC_BEGIN(IEM_MC_F_MIN_386, 0);
                IEM_MC_LOCAL(RTGCPTR, GCPtrEffSrc);
                IEM_MC_CALC_RM_EFF_ADDR(GCPtrEffSrc, bRm, 0);
                IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
                IEM_MC_LOCAL(uint32_t,  u32Target);
                IEM_MC_FETCH_MEM_U32(u32Target, pVCpu->iem.s.iEffSeg, GCPtrEffSrc);
                IEM_MC_IND_CALL_U32_AND_FINISH(u32Target);
                IEM_MC_END();
                break;

            case IEMMODE_64BIT:
                IEM_MC_BEGIN(IEM_MC_F_64BIT, 0);
                IEM_MC_LOCAL(RTGCPTR, GCPtrEffSrc);
                IEM_MC_CALC_RM_EFF_ADDR(GCPtrEffSrc, bRm, 0);
                IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
                IEM_MC_LOCAL(uint64_t,  u64Target);
                IEM_MC_FETCH_MEM_U64(u64Target, pVCpu->iem.s.iEffSeg, GCPtrEffSrc);
                IEM_MC_IND_CALL_U64_AND_FINISH(u64Target);
                IEM_MC_END();
                break;

            IEM_NOT_REACHED_DEFAULT_CASE_RET();
        }
    }
}

#define IEMOP_BODY_GRP5_FAR_EP(a_bRm, a_fnCImpl, a_fCImplExtra) \
    /* Registers? How?? */ \
    if (RT_LIKELY(IEM_IS_MODRM_MEM_MODE(a_bRm))) \
    { /* likely */ } \
    else \
        IEMOP_RAISE_INVALID_OPCODE_RET(); /* callf eax is not legal */ \
    \
    /* 64-bit mode: Default is 32-bit, but only intel respects a REX.W prefix. */ \
    /** @todo what does VIA do? */ \
    if (!IEM_IS_64BIT_CODE(pVCpu) || pVCpu->iem.s.enmEffOpSize != IEMMODE_64BIT || IEM_IS_GUEST_CPU_INTEL(pVCpu)) \
    { /* likely */ } \
    else \
        pVCpu->iem.s.enmEffOpSize = IEMMODE_32BIT; \
    \
    /* Far pointer loaded from memory. */ \
    switch (pVCpu->iem.s.enmEffOpSize) \
    { \
        case IEMMODE_16BIT: \
            IEM_MC_BEGIN(0, 0); \
            IEM_MC_ARG(uint16_t,        u16Sel,                         0); \
            IEM_MC_ARG(uint16_t,        offSeg,                         1); \
            IEM_MC_ARG_CONST(IEMMODE,   enmEffOpSize, IEMMODE_16BIT,    2); \
            IEM_MC_LOCAL(RTGCPTR, GCPtrEffSrc); \
            IEM_MC_CALC_RM_EFF_ADDR(GCPtrEffSrc, a_bRm, 0); \
            IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX(); \
            IEM_MC_FETCH_MEM_U16(offSeg, pVCpu->iem.s.iEffSeg, GCPtrEffSrc); \
            IEM_MC_FETCH_MEM_U16_DISP(u16Sel, pVCpu->iem.s.iEffSeg, GCPtrEffSrc, 2); \
            IEM_MC_CALL_CIMPL_3(IEM_CIMPL_F_BRANCH_INDIRECT | IEM_CIMPL_F_BRANCH_FAR | (a_fCImplExtra) \
                                | IEM_CIMPL_F_MODE | IEM_CIMPL_F_RFLAGS | IEM_CIMPL_F_VMEXIT, 0, \
                                a_fnCImpl, u16Sel, offSeg, enmEffOpSize); \
            IEM_MC_END(); \
            break; \
        \
        case IEMMODE_32BIT: \
            IEM_MC_BEGIN(IEM_MC_F_MIN_386, 0); \
            IEM_MC_ARG(uint16_t,        u16Sel,                         0); \
            IEM_MC_ARG(uint32_t,        offSeg,                         1); \
            IEM_MC_ARG_CONST(IEMMODE,   enmEffOpSize, IEMMODE_32BIT,    2); \
            IEM_MC_LOCAL(RTGCPTR, GCPtrEffSrc); \
            IEM_MC_CALC_RM_EFF_ADDR(GCPtrEffSrc, a_bRm, 0); \
            IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX(); \
            IEM_MC_FETCH_MEM_U32(offSeg, pVCpu->iem.s.iEffSeg, GCPtrEffSrc); \
            IEM_MC_FETCH_MEM_U16_DISP(u16Sel, pVCpu->iem.s.iEffSeg, GCPtrEffSrc, 4); \
            IEM_MC_CALL_CIMPL_3(IEM_CIMPL_F_BRANCH_INDIRECT | IEM_CIMPL_F_BRANCH_FAR | (a_fCImplExtra) \
                                | IEM_CIMPL_F_MODE | IEM_CIMPL_F_RFLAGS | IEM_CIMPL_F_VMEXIT, 0, \
                                a_fnCImpl, u16Sel, offSeg, enmEffOpSize); \
            IEM_MC_END(); \
            break; \
        \
        case IEMMODE_64BIT: \
            Assert(!IEM_IS_GUEST_CPU_AMD(pVCpu)); \
            IEM_MC_BEGIN(IEM_MC_F_64BIT, 0); \
            IEM_MC_ARG(uint16_t,        u16Sel,                         0); \
            IEM_MC_ARG(uint64_t,        offSeg,                         1); \
            IEM_MC_ARG_CONST(IEMMODE,   enmEffOpSize, IEMMODE_64BIT,    2); \
            IEM_MC_LOCAL(RTGCPTR, GCPtrEffSrc); \
            IEM_MC_CALC_RM_EFF_ADDR(GCPtrEffSrc, a_bRm, 0); \
            IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX(); \
            IEM_MC_FETCH_MEM_U64(offSeg, pVCpu->iem.s.iEffSeg, GCPtrEffSrc); \
            IEM_MC_FETCH_MEM_U16_DISP(u16Sel, pVCpu->iem.s.iEffSeg, GCPtrEffSrc, 8); \
            IEM_MC_CALL_CIMPL_3(IEM_CIMPL_F_BRANCH_INDIRECT | IEM_CIMPL_F_BRANCH_FAR | (a_fCImplExtra) \
                                | IEM_CIMPL_F_MODE /* no gates */, 0, \
                                a_fnCImpl, u16Sel, offSeg, enmEffOpSize); \
            IEM_MC_END(); \
            break; \
        \
        IEM_NOT_REACHED_DEFAULT_CASE_RET(); \
    } do {} while (0)


/**
 * Opcode 0xff /3.
 * @param   bRm             The RM byte.
 */
FNIEMOP_DEF_1(iemOp_Grp5_callf_Ep, uint8_t, bRm)
{
    IEMOP_MNEMONIC(callf_Ep, "callf Ep");
    IEMOP_BODY_GRP5_FAR_EP(bRm, iemCImpl_callf, IEM_CIMPL_F_BRANCH_STACK);
}


/**
 * Opcode 0xff /4.
 * @param   bRm             The RM byte.
 */
FNIEMOP_DEF_1(iemOp_Grp5_jmpn_Ev, uint8_t, bRm)
{
    IEMOP_MNEMONIC(jmpn_Ev, "jmpn Ev");
    IEMOP_HLP_DEFAULT_64BIT_OP_SIZE_AND_INTEL_IGNORES_OP_SIZE_PREFIX();

    if (IEM_IS_MODRM_REG_MODE(bRm))
    {
        /* The new RIP is taken from a register. */
        switch (pVCpu->iem.s.enmEffOpSize)
        {
            case IEMMODE_16BIT:
                IEM_MC_BEGIN(0, 0);
                IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
                IEM_MC_LOCAL(uint16_t, u16Target);
                IEM_MC_FETCH_GREG_U16(u16Target, IEM_GET_MODRM_RM(pVCpu, bRm));
                IEM_MC_SET_RIP_U16_AND_FINISH(u16Target);
                IEM_MC_END();
                break;

            case IEMMODE_32BIT:
                IEM_MC_BEGIN(IEM_MC_F_MIN_386, 0);
                IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
                IEM_MC_LOCAL(uint32_t, u32Target);
                IEM_MC_FETCH_GREG_U32(u32Target, IEM_GET_MODRM_RM(pVCpu, bRm));
                IEM_MC_SET_RIP_U32_AND_FINISH(u32Target);
                IEM_MC_END();
                break;

            case IEMMODE_64BIT:
                IEM_MC_BEGIN(IEM_MC_F_64BIT, 0);
                IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
                IEM_MC_LOCAL(uint64_t, u64Target);
                IEM_MC_FETCH_GREG_U64(u64Target, IEM_GET_MODRM_RM(pVCpu, bRm));
                IEM_MC_SET_RIP_U64_AND_FINISH(u64Target);
                IEM_MC_END();
                break;

            IEM_NOT_REACHED_DEFAULT_CASE_RET();
        }
    }
    else
    {
        /* The new RIP is taken from a memory location. */
        switch (pVCpu->iem.s.enmEffOpSize)
        {
            case IEMMODE_16BIT:
                IEM_MC_BEGIN(0, 0);
                IEM_MC_LOCAL(uint16_t, u16Target);
                IEM_MC_LOCAL(RTGCPTR, GCPtrEffSrc);
                IEM_MC_CALC_RM_EFF_ADDR(GCPtrEffSrc, bRm, 0);
                IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
                IEM_MC_FETCH_MEM_U16(u16Target, pVCpu->iem.s.iEffSeg, GCPtrEffSrc);
                IEM_MC_SET_RIP_U16_AND_FINISH(u16Target);
                IEM_MC_END();
                break;

            case IEMMODE_32BIT:
                IEM_MC_BEGIN(IEM_MC_F_MIN_386, 0);
                IEM_MC_LOCAL(uint32_t, u32Target);
                IEM_MC_LOCAL(RTGCPTR, GCPtrEffSrc);
                IEM_MC_CALC_RM_EFF_ADDR(GCPtrEffSrc, bRm, 0);
                IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
                IEM_MC_FETCH_MEM_U32(u32Target, pVCpu->iem.s.iEffSeg, GCPtrEffSrc);
                IEM_MC_SET_RIP_U32_AND_FINISH(u32Target);
                IEM_MC_END();
                break;

            case IEMMODE_64BIT:
                IEM_MC_BEGIN(IEM_MC_F_64BIT, 0);
                IEM_MC_LOCAL(uint64_t, u64Target);
                IEM_MC_LOCAL(RTGCPTR, GCPtrEffSrc);
                IEM_MC_CALC_RM_EFF_ADDR(GCPtrEffSrc, bRm, 0);
                IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
                IEM_MC_FETCH_MEM_U64(u64Target, pVCpu->iem.s.iEffSeg, GCPtrEffSrc);
                IEM_MC_SET_RIP_U64_AND_FINISH(u64Target);
                IEM_MC_END();
                break;

            IEM_NOT_REACHED_DEFAULT_CASE_RET();
        }
    }
}


/**
 * Opcode 0xff /5.
 * @param   bRm             The RM byte.
 */
FNIEMOP_DEF_1(iemOp_Grp5_jmpf_Ep, uint8_t, bRm)
{
    IEMOP_MNEMONIC(jmpf_Ep, "jmpf Ep");
    IEMOP_BODY_GRP5_FAR_EP(bRm, iemCImpl_FarJmp, 0);
}


/**
 * Opcode 0xff /6.
 * @param   bRm             The RM byte.
 */
FNIEMOP_DEF_1(iemOp_Grp5_push_Ev, uint8_t, bRm)
{
    IEMOP_MNEMONIC(push_Ev, "push Ev");

    /* Registers are handled by a common worker. */
    if (IEM_IS_MODRM_REG_MODE(bRm))
        return FNIEMOP_CALL_1(iemOpCommonPushGReg, IEM_GET_MODRM_RM(pVCpu, bRm));

    /* Memory we do here. */
    IEMOP_HLP_DEFAULT_64BIT_OP_SIZE();
    switch (pVCpu->iem.s.enmEffOpSize)
    {
        case IEMMODE_16BIT:
            IEM_MC_BEGIN(0, 0);
            IEM_MC_LOCAL(uint16_t,  u16Src);
            IEM_MC_LOCAL(RTGCPTR,   GCPtrEffSrc);
            IEM_MC_CALC_RM_EFF_ADDR(GCPtrEffSrc, bRm, 0);
            IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
            IEM_MC_FETCH_MEM_U16(u16Src, pVCpu->iem.s.iEffSeg, GCPtrEffSrc);
            IEM_MC_PUSH_U16(u16Src);
            IEM_MC_ADVANCE_RIP_AND_FINISH();
            IEM_MC_END();
            break;

        case IEMMODE_32BIT:
            IEM_MC_BEGIN(IEM_MC_F_MIN_386 | IEM_MC_F_NOT_64BIT, 0);
            IEM_MC_LOCAL(uint32_t,  u32Src);
            IEM_MC_LOCAL(RTGCPTR,   GCPtrEffSrc);
            IEM_MC_CALC_RM_EFF_ADDR(GCPtrEffSrc, bRm, 0);
            IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
            IEM_MC_FETCH_MEM_U32(u32Src, pVCpu->iem.s.iEffSeg, GCPtrEffSrc);
            IEM_MC_PUSH_U32(u32Src);
            IEM_MC_ADVANCE_RIP_AND_FINISH();
            IEM_MC_END();
            break;

        case IEMMODE_64BIT:
            IEM_MC_BEGIN(IEM_MC_F_64BIT, 0);
            IEM_MC_LOCAL(uint64_t,  u64Src);
            IEM_MC_LOCAL(RTGCPTR,   GCPtrEffSrc);
            IEM_MC_CALC_RM_EFF_ADDR(GCPtrEffSrc, bRm, 0);
            IEMOP_HLP_DONE_DECODING_NO_LOCK_PREFIX();
            IEM_MC_FETCH_MEM_U64(u64Src, pVCpu->iem.s.iEffSeg, GCPtrEffSrc);
            IEM_MC_PUSH_U64(u64Src);
            IEM_MC_ADVANCE_RIP_AND_FINISH();
            IEM_MC_END();
            break;

        IEM_NOT_REACHED_DEFAULT_CASE_RET();
    }
}


/**
 * @opcode      0xff
 */
FNIEMOP_DEF(iemOp_Grp5)
{
    uint8_t bRm; IEM_OPCODE_GET_NEXT_U8(&bRm);
    switch (IEM_GET_MODRM_REG_8(bRm))
    {
        case 0:
            return FNIEMOP_CALL_1(iemOp_Grp5_inc_Ev, bRm);
        case 1:
            return FNIEMOP_CALL_1(iemOp_Grp5_dec_Ev, bRm);
        case 2:
            return FNIEMOP_CALL_1(iemOp_Grp5_calln_Ev, bRm);
        case 3:
            return FNIEMOP_CALL_1(iemOp_Grp5_callf_Ep, bRm);
        case 4:
            return FNIEMOP_CALL_1(iemOp_Grp5_jmpn_Ev, bRm);
        case 5:
            return FNIEMOP_CALL_1(iemOp_Grp5_jmpf_Ep, bRm);
        case 6:
            return FNIEMOP_CALL_1(iemOp_Grp5_push_Ev, bRm);
        case 7:
            IEMOP_MNEMONIC(grp5_ud, "grp5-ud");
            IEMOP_RAISE_INVALID_OPCODE_RET();
    }
    AssertFailedReturn(VERR_IEM_IPE_3);
}



const PFNIEMOP g_apfnOneByteMap[256] =
{
    /* 0x00 */  iemOp_add_Eb_Gb,        iemOp_add_Ev_Gv,        iemOp_add_Gb_Eb,        iemOp_add_Gv_Ev,
    /* 0x04 */  iemOp_add_Al_Ib,        iemOp_add_eAX_Iz,       iemOp_push_ES,          iemOp_pop_ES,
    /* 0x08 */  iemOp_or_Eb_Gb,         iemOp_or_Ev_Gv,         iemOp_or_Gb_Eb,         iemOp_or_Gv_Ev,
    /* 0x0c */  iemOp_or_Al_Ib,         iemOp_or_eAX_Iz,        iemOp_push_CS,          iemOp_2byteEscape,
    /* 0x10 */  iemOp_adc_Eb_Gb,        iemOp_adc_Ev_Gv,        iemOp_adc_Gb_Eb,        iemOp_adc_Gv_Ev,
    /* 0x14 */  iemOp_adc_Al_Ib,        iemOp_adc_eAX_Iz,       iemOp_push_SS,          iemOp_pop_SS,
    /* 0x18 */  iemOp_sbb_Eb_Gb,        iemOp_sbb_Ev_Gv,        iemOp_sbb_Gb_Eb,        iemOp_sbb_Gv_Ev,
    /* 0x1c */  iemOp_sbb_Al_Ib,        iemOp_sbb_eAX_Iz,       iemOp_push_DS,          iemOp_pop_DS,
    /* 0x20 */  iemOp_and_Eb_Gb,        iemOp_and_Ev_Gv,        iemOp_and_Gb_Eb,        iemOp_and_Gv_Ev,
    /* 0x24 */  iemOp_and_Al_Ib,        iemOp_and_eAX_Iz,       iemOp_seg_ES,           iemOp_daa,
    /* 0x28 */  iemOp_sub_Eb_Gb,        iemOp_sub_Ev_Gv,        iemOp_sub_Gb_Eb,        iemOp_sub_Gv_Ev,
    /* 0x2c */  iemOp_sub_Al_Ib,        iemOp_sub_eAX_Iz,       iemOp_seg_CS,           iemOp_das,
    /* 0x30 */  iemOp_xor_Eb_Gb,        iemOp_xor_Ev_Gv,        iemOp_xor_Gb_Eb,        iemOp_xor_Gv_Ev,
    /* 0x34 */  iemOp_xor_Al_Ib,        iemOp_xor_eAX_Iz,       iemOp_seg_SS,           iemOp_aaa,
    /* 0x38 */  iemOp_cmp_Eb_Gb,        iemOp_cmp_Ev_Gv,        iemOp_cmp_Gb_Eb,        iemOp_cmp_Gv_Ev,
    /* 0x3c */  iemOp_cmp_Al_Ib,        iemOp_cmp_eAX_Iz,       iemOp_seg_DS,           iemOp_aas,
    /* 0x40 */  iemOp_inc_eAX,          iemOp_inc_eCX,          iemOp_inc_eDX,          iemOp_inc_eBX,
    /* 0x44 */  iemOp_inc_eSP,          iemOp_inc_eBP,          iemOp_inc_eSI,          iemOp_inc_eDI,
    /* 0x48 */  iemOp_dec_eAX,          iemOp_dec_eCX,          iemOp_dec_eDX,          iemOp_dec_eBX,
    /* 0x4c */  iemOp_dec_eSP,          iemOp_dec_eBP,          iemOp_dec_eSI,          iemOp_dec_eDI,
    /* 0x50 */  iemOp_push_eAX,         iemOp_push_eCX,         iemOp_push_eDX,         iemOp_push_eBX,
    /* 0x54 */  iemOp_push_eSP,         iemOp_push_eBP,         iemOp_push_eSI,         iemOp_push_eDI,
    /* 0x58 */  iemOp_pop_eAX,          iemOp_pop_eCX,          iemOp_pop_eDX,          iemOp_pop_eBX,
    /* 0x5c */  iemOp_pop_eSP,          iemOp_pop_eBP,          iemOp_pop_eSI,          iemOp_pop_eDI,
    /* 0x60 */  iemOp_pusha,            iemOp_popa__mvex,       iemOp_bound_Gv_Ma__evex, iemOp_arpl_Ew_Gw_movsx_Gv_Ev,
    /* 0x64 */  iemOp_seg_FS,           iemOp_seg_GS,           iemOp_op_size,          iemOp_addr_size,
    /* 0x68 */  iemOp_push_Iz,          iemOp_imul_Gv_Ev_Iz,    iemOp_push_Ib,          iemOp_imul_Gv_Ev_Ib,
    /* 0x6c */  iemOp_insb_Yb_DX,       iemOp_inswd_Yv_DX,      iemOp_outsb_Yb_DX,      iemOp_outswd_Yv_DX,
    /* 0x70 */  iemOp_jo_Jb,            iemOp_jno_Jb,           iemOp_jc_Jb,            iemOp_jnc_Jb,
    /* 0x74 */  iemOp_je_Jb,            iemOp_jne_Jb,           iemOp_jbe_Jb,           iemOp_jnbe_Jb,
    /* 0x78 */  iemOp_js_Jb,            iemOp_jns_Jb,           iemOp_jp_Jb,            iemOp_jnp_Jb,
    /* 0x7c */  iemOp_jl_Jb,            iemOp_jnl_Jb,           iemOp_jle_Jb,           iemOp_jnle_Jb,
    /* 0x80 */  iemOp_Grp1_Eb_Ib_80,    iemOp_Grp1_Ev_Iz,       iemOp_Grp1_Eb_Ib_82,    iemOp_Grp1_Ev_Ib,
    /* 0x84 */  iemOp_test_Eb_Gb,       iemOp_test_Ev_Gv,       iemOp_xchg_Eb_Gb,       iemOp_xchg_Ev_Gv,
    /* 0x88 */  iemOp_mov_Eb_Gb,        iemOp_mov_Ev_Gv,        iemOp_mov_Gb_Eb,        iemOp_mov_Gv_Ev,
    /* 0x8c */  iemOp_mov_Ev_Sw,        iemOp_lea_Gv_M,         iemOp_mov_Sw_Ev,        iemOp_Grp1A__xop,
    /* 0x90 */  iemOp_nop,              iemOp_xchg_eCX_eAX,     iemOp_xchg_eDX_eAX,     iemOp_xchg_eBX_eAX,
    /* 0x94 */  iemOp_xchg_eSP_eAX,     iemOp_xchg_eBP_eAX,     iemOp_xchg_eSI_eAX,     iemOp_xchg_eDI_eAX,
    /* 0x98 */  iemOp_cbw,              iemOp_cwd,              iemOp_call_Ap,          iemOp_wait,
    /* 0x9c */  iemOp_pushf_Fv,         iemOp_popf_Fv,          iemOp_sahf,             iemOp_lahf,
    /* 0xa0 */  iemOp_mov_AL_Ob,        iemOp_mov_rAX_Ov,       iemOp_mov_Ob_AL,        iemOp_mov_Ov_rAX,
    /* 0xa4 */  iemOp_movsb_Xb_Yb,      iemOp_movswd_Xv_Yv,     iemOp_cmpsb_Xb_Yb,      iemOp_cmpswd_Xv_Yv,
    /* 0xa8 */  iemOp_test_AL_Ib,       iemOp_test_eAX_Iz,      iemOp_stosb_Yb_AL,      iemOp_stoswd_Yv_eAX,
    /* 0xac */  iemOp_lodsb_AL_Xb,      iemOp_lodswd_eAX_Xv,    iemOp_scasb_AL_Xb,      iemOp_scaswd_eAX_Xv,
    /* 0xb0 */  iemOp_mov_AL_Ib,        iemOp_CL_Ib,            iemOp_DL_Ib,            iemOp_BL_Ib,
    /* 0xb4 */  iemOp_mov_AH_Ib,        iemOp_CH_Ib,            iemOp_DH_Ib,            iemOp_BH_Ib,
    /* 0xb8 */  iemOp_eAX_Iv,           iemOp_eCX_Iv,           iemOp_eDX_Iv,           iemOp_eBX_Iv,
    /* 0xbc */  iemOp_eSP_Iv,           iemOp_eBP_Iv,           iemOp_eSI_Iv,           iemOp_eDI_Iv,
    /* 0xc0 */  iemOp_Grp2_Eb_Ib,       iemOp_Grp2_Ev_Ib,       iemOp_retn_Iw,          iemOp_retn,
    /* 0xc4 */  iemOp_les_Gv_Mp__vex3,  iemOp_lds_Gv_Mp__vex2,  iemOp_Grp11_Eb_Ib,      iemOp_Grp11_Ev_Iz,
    /* 0xc8 */  iemOp_enter_Iw_Ib,      iemOp_leave,            iemOp_retf_Iw,          iemOp_retf,
    /* 0xcc */  iemOp_int3,             iemOp_int_Ib,           iemOp_into,             iemOp_iret,
    /* 0xd0 */  iemOp_Grp2_Eb_1,        iemOp_Grp2_Ev_1,        iemOp_Grp2_Eb_CL,       iemOp_Grp2_Ev_CL,
    /* 0xd4 */  iemOp_aam_Ib,           iemOp_aad_Ib,           iemOp_salc,             iemOp_xlat,
    /* 0xd8 */  iemOp_EscF0,            iemOp_EscF1,            iemOp_EscF2,            iemOp_EscF3,
    /* 0xdc */  iemOp_EscF4,            iemOp_EscF5,            iemOp_EscF6,            iemOp_EscF7,
    /* 0xe0 */  iemOp_loopne_Jb,        iemOp_loope_Jb,         iemOp_loop_Jb,          iemOp_jecxz_Jb,
    /* 0xe4 */  iemOp_in_AL_Ib,         iemOp_in_eAX_Ib,        iemOp_out_Ib_AL,        iemOp_out_Ib_eAX,
    /* 0xe8 */  iemOp_call_Jv,          iemOp_jmp_Jv,           iemOp_jmp_Ap,           iemOp_jmp_Jb,
    /* 0xec */  iemOp_in_AL_DX,         iemOp_in_eAX_DX,        iemOp_out_DX_AL,        iemOp_out_DX_eAX,
    /* 0xf0 */  iemOp_lock,             iemOp_int1,             iemOp_repne,            iemOp_repe,
    /* 0xf4 */  iemOp_hlt,              iemOp_cmc,              iemOp_Grp3_Eb,          iemOp_Grp3_Ev,
    /* 0xf8 */  iemOp_clc,              iemOp_stc,              iemOp_cli,              iemOp_sti,
    /* 0xfc */  iemOp_cld,              iemOp_std,              iemOp_Grp4,             iemOp_Grp5,
};


/** @} */