| 1 | /** @file
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| 2 | * IPRT - Assembly Functions, x86 32-bit Watcom C/C++ pragma aux.
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| 3 | */
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| 4 |
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| 5 | /*
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| 6 | * Copyright (C) 2006-2024 Oracle and/or its affiliates.
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| 7 | *
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| 8 | * This file is part of VirtualBox base platform packages, as
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| 9 | * available from https://www.virtualbox.org.
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| 10 | *
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| 11 | * This program is free software; you can redistribute it and/or
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| 12 | * modify it under the terms of the GNU General Public License
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| 13 | * as published by the Free Software Foundation, in version 3 of the
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| 14 | * License.
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| 15 | *
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| 16 | * This program is distributed in the hope that it will be useful, but
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| 17 | * WITHOUT ANY WARRANTY; without even the implied warranty of
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| 18 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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| 19 | * General Public License for more details.
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| 20 | *
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| 21 | * You should have received a copy of the GNU General Public License
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| 22 | * along with this program; if not, see <https://www.gnu.org/licenses>.
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| 23 | *
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| 24 | * The contents of this file may alternatively be used under the terms
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| 25 | * of the Common Development and Distribution License Version 1.0
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| 26 | * (CDDL), a copy of it is provided in the "COPYING.CDDL" file included
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| 27 | * in the VirtualBox distribution, in which case the provisions of the
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| 28 | * CDDL are applicable instead of those of the GPL.
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| 29 | *
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| 30 | * You may elect to license modified versions of this file under the
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| 31 | * terms and conditions of either the GPL or the CDDL or both.
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| 32 | *
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| 33 | * SPDX-License-Identifier: GPL-3.0-only OR CDDL-1.0
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| 34 | */
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| 35 |
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| 36 | #ifndef IPRT_INCLUDED_asm_watcom_x86_32_h
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| 37 | #define IPRT_INCLUDED_asm_watcom_x86_32_h
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| 38 | /* no pragma once */
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| 39 |
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| 40 | #ifndef IPRT_INCLUDED_asm_h
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| 41 | # error "Don't include this header directly."
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| 42 | #endif
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| 43 |
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| 44 | #ifndef __FLAT__
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| 45 | # error "Only works with flat pointers! (-mf)"
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| 46 | #endif
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| 47 |
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| 48 | /*
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| 49 | * Note! The #undef that preceds the #pragma aux statements is for undoing
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| 50 | * the mangling, because the symbol in #pragma aux [symbol] statements
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| 51 | * doesn't get subjected to preprocessing. This is also why we include
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| 52 | * the watcom header at both the top and the bottom of asm.h file.
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| 53 | */
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| 54 |
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| 55 | #undef ASMCompilerBarrier
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| 56 | #ifdef IPRT_ASM_WATCOM_X86_32_WITH_PRAGMAS
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| 57 | # if 0 /* overkill version. */
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| 58 | # pragma aux ASMCompilerBarrier = \
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| 59 | "nop" \
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| 60 | parm [] \
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| 61 | modify exact [eax ebx ecx edx es ds fs gs];
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| 62 | # else
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| 63 | # pragma aux ASMCompilerBarrier = \
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| 64 | "" \
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| 65 | parm [] \
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| 66 | modify exact [];
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| 67 | # endif
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| 68 | #endif
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| 69 |
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| 70 | #undef ASMNopPause
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| 71 | #ifdef IPRT_ASM_WATCOM_X86_32_WITH_PRAGMAS
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| 72 | #pragma aux ASMNopPause = \
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| 73 | ".686p" \
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| 74 | ".xmm2" \
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| 75 | "pause" \
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| 76 | parm [] nomemory \
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| 77 | modify exact [] nomemory;
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| 78 | #endif
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| 79 |
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| 80 | #undef ASMAtomicXchgU8
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| 81 | #ifdef IPRT_ASM_WATCOM_X86_32_WITH_PRAGMAS
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| 82 | #pragma aux ASMAtomicXchgU8 = \
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| 83 | "xchg [ecx], al" \
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| 84 | parm [ecx] [al] \
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| 85 | value [al] \
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| 86 | modify exact [al];
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| 87 | #endif
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| 88 |
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| 89 | #undef ASMAtomicXchgU16
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| 90 | #ifdef IPRT_ASM_WATCOM_X86_32_WITH_PRAGMAS
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| 91 | #pragma aux ASMAtomicXchgU16 = \
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| 92 | "xchg [ecx], ax" \
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| 93 | parm [ecx] [ax] \
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| 94 | value [ax] \
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| 95 | modify exact [ax];
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| 96 | #endif
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| 97 |
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| 98 | #undef ASMAtomicXchgU32
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| 99 | #ifdef IPRT_ASM_WATCOM_X86_32_WITH_PRAGMAS
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| 100 | #pragma aux ASMAtomicXchgU32 = \
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| 101 | "xchg [ecx], eax" \
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| 102 | parm [ecx] [eax] \
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| 103 | value [eax] \
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| 104 | modify exact [eax];
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| 105 | #endif
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| 106 |
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| 107 | #undef ASMAtomicXchgU64
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| 108 | #ifdef IPRT_ASM_WATCOM_X86_32_WITH_PRAGMAS
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| 109 | #pragma aux ASMAtomicXchgU64 = \
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| 110 | ".586" \
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| 111 | "try_again:" \
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| 112 | "lock cmpxchg8b [esi]" \
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| 113 | "jnz try_again" \
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| 114 | parm [esi] [ebx ecx] \
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| 115 | value [eax edx] \
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| 116 | modify exact [edx ecx ebx eax];
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| 117 | #endif
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| 118 |
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| 119 | #undef ASMAtomicCmpXchgU8
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| 120 | #ifdef IPRT_ASM_WATCOM_X86_32_WITH_PRAGMAS
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| 121 | #pragma aux ASMAtomicCmpXchgU8 = \
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| 122 | ".486" \
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| 123 | "lock cmpxchg [edx], cl" \
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| 124 | "setz al" \
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| 125 | parm [edx] [cl] [al] \
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| 126 | value [al] \
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| 127 | modify exact [al];
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| 128 | #endif
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| 129 |
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| 130 | #undef ASMAtomicCmpXchgU16
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| 131 | #ifdef IPRT_ASM_WATCOM_X86_32_WITH_PRAGMAS
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| 132 | #pragma aux ASMAtomicCmpXchgU16 = \
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| 133 | ".486" \
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| 134 | "lock cmpxchg [edx], cx" \
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| 135 | "setz al" \
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| 136 | parm [edx] [cx] [ax] \
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| 137 | value [al] \
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| 138 | modify exact [ax];
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| 139 | #endif
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| 140 |
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| 141 | #undef ASMAtomicCmpXchgU32
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| 142 | #ifdef IPRT_ASM_WATCOM_X86_32_WITH_PRAGMAS
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| 143 | #pragma aux ASMAtomicCmpXchgU32 = \
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| 144 | ".486" \
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| 145 | "lock cmpxchg [edx], ecx" \
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| 146 | "setz al" \
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| 147 | parm [edx] [ecx] [eax] \
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| 148 | value [al] \
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| 149 | modify exact [eax];
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| 150 | #endif
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| 151 |
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| 152 | #undef ASMAtomicCmpXchgU64
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| 153 | #ifdef IPRT_ASM_WATCOM_X86_32_WITH_PRAGMAS
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| 154 | #pragma aux ASMAtomicCmpXchgU64 = \
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| 155 | ".586" \
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| 156 | "lock cmpxchg8b [edi]" \
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| 157 | "setz al" \
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| 158 | parm [edi] [ebx ecx] [eax edx] \
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| 159 | value [al] \
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| 160 | modify exact [eax edx];
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| 161 | #endif
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| 162 |
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| 163 | #undef ASMAtomicCmpXchgExU32
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| 164 | #ifdef IPRT_ASM_WATCOM_X86_32_WITH_PRAGMAS
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| 165 | #pragma aux ASMAtomicCmpXchgExU32 = \
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| 166 | ".586" \
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| 167 | "lock cmpxchg [edx], ecx" \
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| 168 | "mov [edi], eax" \
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| 169 | "setz al" \
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| 170 | parm [edx] [ecx] [eax] [edi] \
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| 171 | value [al] \
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| 172 | modify exact [eax];
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| 173 | #endif
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| 174 |
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| 175 | #undef ASMAtomicCmpXchgExU64
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| 176 | #ifdef IPRT_ASM_WATCOM_X86_32_WITH_PRAGMAS
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| 177 | #pragma aux ASMAtomicCmpXchgExU64 = \
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| 178 | ".586" \
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| 179 | "lock cmpxchg8b [edi]" \
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| 180 | "mov [esi], eax" \
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| 181 | "mov [esi + 4], edx" \
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| 182 | "setz al" \
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| 183 | parm [edi] [ebx ecx] [eax edx] [esi] \
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| 184 | value [al] \
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| 185 | modify exact [eax edx];
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| 186 | #endif
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| 187 |
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| 188 | #undef ASMSerializeInstructionCpuId
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| 189 | #ifdef IPRT_ASM_WATCOM_X86_32_WITH_PRAGMAS
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| 190 | #pragma aux ASMSerializeInstructionCpuId = \
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| 191 | ".586" \
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| 192 | "xor eax, eax" \
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| 193 | "cpuid" \
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| 194 | parm [] \
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| 195 | modify exact [eax ebx ecx edx];
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| 196 | #endif
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| 197 |
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| 198 | #undef ASMSerializeInstructionIRet
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| 199 | #ifdef IPRT_ASM_WATCOM_X86_32_WITH_PRAGMAS
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| 200 | #pragma aux ASMSerializeInstructionIRet = \
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| 201 | "pushf" \
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| 202 | "push cs" \
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| 203 | "call foo" /* 'push offset done' doesn't work */ \
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| 204 | "jmp done" \
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| 205 | "foo:" \
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| 206 | "iret" \
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| 207 | "done:" \
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| 208 | parm [] \
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| 209 | modify exact [];
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| 210 | #endif
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| 211 |
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| 212 | #undef ASMSerializeInstructionRdTscp
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| 213 | #ifdef IPRT_ASM_WATCOM_X86_32_WITH_PRAGMAS
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| 214 | #pragma aux ASMSerializeInstructionRdTscp = \
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| 215 | 0x0f 0x01 0xf9 \
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| 216 | parm [] \
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| 217 | modify exact [eax edx ecx];
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| 218 | #endif
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| 219 |
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| 220 | #undef ASMAtomicReadU64
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| 221 | #ifdef IPRT_ASM_WATCOM_X86_32_WITH_PRAGMAS
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| 222 | #pragma aux ASMAtomicReadU64 = \
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| 223 | ".586" \
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| 224 | "xor eax, eax" \
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| 225 | "mov edx, eax" \
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| 226 | "mov ebx, eax" \
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| 227 | "mov ecx, eax" \
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| 228 | "lock cmpxchg8b [edi]" \
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| 229 | parm [edi] \
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| 230 | value [eax edx] \
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| 231 | modify exact [eax ebx ecx edx];
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| 232 | #endif
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| 233 |
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| 234 | #undef ASMAtomicUoReadU64
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| 235 | #ifdef IPRT_ASM_WATCOM_X86_32_WITH_PRAGMAS
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| 236 | #pragma aux ASMAtomicUoReadU64 = \
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| 237 | ".586" \
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| 238 | "xor eax, eax" \
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| 239 | "mov edx, eax" \
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| 240 | "mov ebx, eax" \
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| 241 | "mov ecx, eax" \
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| 242 | "lock cmpxchg8b [edi]" \
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| 243 | parm [edi] \
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| 244 | value [eax edx] \
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| 245 | modify exact [eax ebx ecx edx];
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| 246 | #endif
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| 247 |
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| 248 | #undef ASMAtomicAddU16
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| 249 | #ifdef IPRT_ASM_WATCOM_X86_32_WITH_PRAGMAS
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| 250 | #pragma aux ASMAtomicAddU16 = \
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| 251 | ".486" \
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| 252 | "lock xadd [ecx], ax" \
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| 253 | parm [ecx] [ax] \
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| 254 | value [ax] \
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| 255 | modify exact [ax];
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| 256 | #endif
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| 257 |
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| 258 | #undef ASMAtomicAddU32
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| 259 | #ifdef IPRT_ASM_WATCOM_X86_32_WITH_PRAGMAS
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| 260 | #pragma aux ASMAtomicAddU32 = \
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| 261 | ".486" \
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| 262 | "lock xadd [ecx], eax" \
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| 263 | parm [ecx] [eax] \
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| 264 | value [eax] \
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| 265 | modify exact [eax];
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| 266 | #endif
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| 267 |
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| 268 | #undef ASMAtomicIncU16
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| 269 | #ifdef IPRT_ASM_WATCOM_X86_32_WITH_PRAGMAS
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| 270 | #pragma aux ASMAtomicIncU16 = \
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| 271 | ".486" \
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| 272 | "mov ax, 1" \
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| 273 | "lock xadd [ecx], ax" \
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| 274 | "inc ax" \
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| 275 | parm [ecx] \
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| 276 | value [ax] \
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| 277 | modify exact [ax];
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| 278 | #endif
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| 279 |
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| 280 | #undef ASMAtomicIncU32
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| 281 | #ifdef IPRT_ASM_WATCOM_X86_32_WITH_PRAGMAS
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| 282 | #pragma aux ASMAtomicIncU32 = \
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| 283 | ".486" \
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| 284 | "mov eax, 1" \
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| 285 | "lock xadd [ecx], eax" \
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| 286 | "inc eax" \
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| 287 | parm [ecx] \
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| 288 | value [eax] \
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| 289 | modify exact [eax];
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| 290 | #endif
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| 291 |
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| 292 | /* ASMAtomicIncU64: Should be done by C inline or in external file. */
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| 293 |
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| 294 | #undef ASMAtomicDecU16
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| 295 | #ifdef IPRT_ASM_WATCOM_X86_32_WITH_PRAGMAS
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| 296 | #pragma aux ASMAtomicDecU16 = \
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| 297 | ".486" \
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| 298 | "mov ax, 0ffffh" \
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| 299 | "lock xadd [ecx], ax" \
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| 300 | "dec ax" \
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| 301 | parm [ecx] \
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| 302 | value [ax] \
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| 303 | modify exact [ax];
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| 304 | #endif
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| 305 |
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| 306 | #undef ASMAtomicDecU32
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| 307 | #ifdef IPRT_ASM_WATCOM_X86_32_WITH_PRAGMAS
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| 308 | #pragma aux ASMAtomicDecU32 = \
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| 309 | ".486" \
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| 310 | "mov eax, 0ffffffffh" \
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| 311 | "lock xadd [ecx], eax" \
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| 312 | "dec eax" \
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| 313 | parm [ecx] \
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| 314 | value [eax] \
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| 315 | modify exact [eax];
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| 316 | #endif
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| 317 |
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| 318 | /* ASMAtomicDecU64: Should be done by C inline or in external file. */
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| 319 |
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| 320 | #undef ASMAtomicOrU32
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| 321 | #ifdef IPRT_ASM_WATCOM_X86_32_WITH_PRAGMAS
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| 322 | #pragma aux ASMAtomicOrU32 = \
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| 323 | "lock or [ecx], eax" \
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| 324 | parm [ecx] [eax] \
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| 325 | modify exact [];
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| 326 | #endif
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| 327 |
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| 328 | /* ASMAtomicOrU64: Should be done by C inline or in external file. */
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| 329 |
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| 330 | #undef ASMAtomicAndU32
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| 331 | #ifdef IPRT_ASM_WATCOM_X86_32_WITH_PRAGMAS
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| 332 | #pragma aux ASMAtomicAndU32 = \
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| 333 | "lock and [ecx], eax" \
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| 334 | parm [ecx] [eax] \
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| 335 | modify exact [];
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| 336 | #endif
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| 337 |
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| 338 | /* ASMAtomicAndU64: Should be done by C inline or in external file. */
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| 339 |
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| 340 | #undef ASMAtomicUoOrU32
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| 341 | #ifdef IPRT_ASM_WATCOM_X86_32_WITH_PRAGMAS
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| 342 | #pragma aux ASMAtomicUoOrU32 = \
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| 343 | "or [ecx], eax" \
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| 344 | parm [ecx] [eax] \
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| 345 | modify exact [];
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| 346 | #endif
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| 347 |
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| 348 | /* ASMAtomicUoOrU64: Should be done by C inline or in external file. */
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| 349 |
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| 350 | #undef ASMAtomicUoAndU32
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| 351 | #ifdef IPRT_ASM_WATCOM_X86_32_WITH_PRAGMAS
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| 352 | #pragma aux ASMAtomicUoAndU32 = \
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| 353 | "and [ecx], eax" \
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| 354 | parm [ecx] [eax] \
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| 355 | modify exact [];
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| 356 | #endif
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| 357 |
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| 358 | /* ASMAtomicUoAndU64: Should be done by C inline or in external file. */
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| 359 |
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| 360 | #undef ASMAtomicUoIncU32
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| 361 | #ifdef IPRT_ASM_WATCOM_X86_32_WITH_PRAGMAS
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| 362 | #pragma aux ASMAtomicUoIncU32 = \
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| 363 | ".486" \
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| 364 | "xadd [ecx], eax" \
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| 365 | "inc eax" \
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| 366 | parm [ecx] \
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| 367 | value [eax] \
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| 368 | modify exact [eax];
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| 369 | #endif
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| 370 |
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| 371 | #undef ASMAtomicUoDecU32
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| 372 | #ifdef IPRT_ASM_WATCOM_X86_32_WITH_PRAGMAS
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| 373 | #pragma aux ASMAtomicUoDecU32 = \
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| 374 | ".486" \
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| 375 | "mov eax, 0ffffffffh" \
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| 376 | "xadd [ecx], eax" \
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| 377 | "dec eax" \
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| 378 | parm [ecx] \
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| 379 | value [eax] \
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| 380 | modify exact [eax];
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| 381 | #endif
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| 382 |
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| 383 | #undef ASMBitSet
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| 384 | #ifdef IPRT_ASM_WATCOM_X86_32_WITH_PRAGMAS
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| 385 | #pragma aux ASMBitSet = \
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| 386 | "bts [ecx], eax" \
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| 387 | parm [ecx] [eax] \
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| 388 | modify exact [];
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| 389 | #endif
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| 390 |
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| 391 | #undef ASMAtomicBitSet
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| 392 | #ifdef IPRT_ASM_WATCOM_X86_32_WITH_PRAGMAS
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| 393 | #pragma aux ASMAtomicBitSet = \
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| 394 | "lock bts [ecx], eax" \
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| 395 | parm [ecx] [eax] \
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| 396 | modify exact [];
|
|---|
| 397 | #endif
|
|---|
| 398 |
|
|---|
| 399 | #undef ASMBitClear
|
|---|
| 400 | #ifdef IPRT_ASM_WATCOM_X86_32_WITH_PRAGMAS
|
|---|
| 401 | #pragma aux ASMBitClear = \
|
|---|
| 402 | "btr [ecx], eax" \
|
|---|
| 403 | parm [ecx] [eax] \
|
|---|
| 404 | modify exact [];
|
|---|
| 405 | #endif
|
|---|
| 406 |
|
|---|
| 407 | #undef ASMAtomicBitClear
|
|---|
| 408 | #ifdef IPRT_ASM_WATCOM_X86_32_WITH_PRAGMAS
|
|---|
| 409 | #pragma aux ASMAtomicBitClear = \
|
|---|
| 410 | "lock btr [ecx], eax" \
|
|---|
| 411 | parm [ecx] [eax] \
|
|---|
| 412 | modify exact [];
|
|---|
| 413 | #endif
|
|---|
| 414 |
|
|---|
| 415 | #undef ASMBitToggle
|
|---|
| 416 | #ifdef IPRT_ASM_WATCOM_X86_32_WITH_PRAGMAS
|
|---|
| 417 | #pragma aux ASMBitToggle = \
|
|---|
| 418 | "btc [ecx], eax" \
|
|---|
| 419 | parm [ecx] [eax] \
|
|---|
| 420 | modify exact [];
|
|---|
| 421 | #endif
|
|---|
| 422 |
|
|---|
| 423 | #undef ASMAtomicBitToggle
|
|---|
| 424 | #ifdef IPRT_ASM_WATCOM_X86_32_WITH_PRAGMAS
|
|---|
| 425 | #pragma aux ASMAtomicBitToggle = \
|
|---|
| 426 | "lock btc [ecx], eax" \
|
|---|
| 427 | parm [ecx] [eax] \
|
|---|
| 428 | modify exact [];
|
|---|
| 429 | #endif
|
|---|
| 430 |
|
|---|
| 431 |
|
|---|
| 432 | #undef ASMBitTestAndSet
|
|---|
| 433 | #ifdef IPRT_ASM_WATCOM_X86_32_WITH_PRAGMAS
|
|---|
| 434 | #pragma aux ASMBitTestAndSet = \
|
|---|
| 435 | "bts [ecx], eax" \
|
|---|
| 436 | "setc al" \
|
|---|
| 437 | parm [ecx] [eax] \
|
|---|
| 438 | value [al] \
|
|---|
| 439 | modify exact [eax];
|
|---|
| 440 | #endif
|
|---|
| 441 |
|
|---|
| 442 | #undef ASMAtomicBitTestAndSet
|
|---|
| 443 | #ifdef IPRT_ASM_WATCOM_X86_32_WITH_PRAGMAS
|
|---|
| 444 | #pragma aux ASMAtomicBitTestAndSet = \
|
|---|
| 445 | "lock bts [ecx], eax" \
|
|---|
| 446 | "setc al" \
|
|---|
| 447 | parm [ecx] [eax] \
|
|---|
| 448 | value [al] \
|
|---|
| 449 | modify exact [eax];
|
|---|
| 450 | #endif
|
|---|
| 451 |
|
|---|
| 452 | #undef ASMBitTestAndClear
|
|---|
| 453 | #ifdef IPRT_ASM_WATCOM_X86_32_WITH_PRAGMAS
|
|---|
| 454 | #pragma aux ASMBitTestAndClear = \
|
|---|
| 455 | "btr [ecx], eax" \
|
|---|
| 456 | "setc al" \
|
|---|
| 457 | parm [ecx] [eax] \
|
|---|
| 458 | value [al] \
|
|---|
| 459 | modify exact [eax];
|
|---|
| 460 | #endif
|
|---|
| 461 |
|
|---|
| 462 | #undef ASMAtomicBitTestAndClear
|
|---|
| 463 | #ifdef IPRT_ASM_WATCOM_X86_32_WITH_PRAGMAS
|
|---|
| 464 | #pragma aux ASMAtomicBitTestAndClear = \
|
|---|
| 465 | "lock btr [ecx], eax" \
|
|---|
| 466 | "setc al" \
|
|---|
| 467 | parm [ecx] [eax] \
|
|---|
| 468 | value [al] \
|
|---|
| 469 | modify exact [eax];
|
|---|
| 470 | #endif
|
|---|
| 471 |
|
|---|
| 472 | #undef ASMBitTestAndToggle
|
|---|
| 473 | #ifdef IPRT_ASM_WATCOM_X86_32_WITH_PRAGMAS
|
|---|
| 474 | #pragma aux ASMBitTestAndToggle = \
|
|---|
| 475 | "btc [ecx], eax" \
|
|---|
| 476 | "setc al" \
|
|---|
| 477 | parm [ecx] [eax] \
|
|---|
| 478 | value [al] \
|
|---|
| 479 | modify exact [eax];
|
|---|
| 480 | #endif
|
|---|
| 481 |
|
|---|
| 482 | #undef ASMAtomicBitTestAndToggle
|
|---|
| 483 | #ifdef IPRT_ASM_WATCOM_X86_32_WITH_PRAGMAS
|
|---|
| 484 | #pragma aux ASMAtomicBitTestAndToggle = \
|
|---|
| 485 | "lock btc [ecx], eax" \
|
|---|
| 486 | "setc al" \
|
|---|
| 487 | parm [ecx] [eax] \
|
|---|
| 488 | value [al] \
|
|---|
| 489 | modify exact [eax];
|
|---|
| 490 | #endif
|
|---|
| 491 |
|
|---|
| 492 | #undef ASMBitTest
|
|---|
| 493 | #ifdef IPRT_ASM_WATCOM_X86_32_WITH_PRAGMAS
|
|---|
| 494 | #pragma aux ASMBitTest = \
|
|---|
| 495 | "bt [ecx], eax" \
|
|---|
| 496 | "setc al" \
|
|---|
| 497 | parm [ecx] [eax] nomemory \
|
|---|
| 498 | value [al] \
|
|---|
| 499 | modify exact [eax] nomemory;
|
|---|
| 500 | #endif
|
|---|
| 501 |
|
|---|
| 502 | #if 0
|
|---|
| 503 | /** @todo this is way to much inline assembly, better off in an external function. */
|
|---|
| 504 | #undef ASMBitFirstClear
|
|---|
| 505 | #ifdef IPRT_ASM_WATCOM_X86_32_WITH_PRAGMAS
|
|---|
| 506 | #pragma aux ASMBitFirstClear = \
|
|---|
| 507 | "mov edx, edi" /* save start of bitmap for later */ \
|
|---|
| 508 | "add ecx, 31" \
|
|---|
| 509 | "shr ecx, 5" /* cDWord = RT_ALIGN_32(cBits, 32) / 32; */ \
|
|---|
| 510 | "mov eax, 0ffffffffh" \
|
|---|
| 511 | "repe scasd" \
|
|---|
| 512 | "je done" \
|
|---|
| 513 | "lea edi, [edi - 4]" /* rewind edi */ \
|
|---|
| 514 | "xor eax, [edi]" /* load inverted bits */ \
|
|---|
| 515 | "sub edi, edx" /* calc byte offset */ \
|
|---|
| 516 | "shl edi, 3" /* convert byte to bit offset */ \
|
|---|
| 517 | "mov edx, eax" \
|
|---|
| 518 | "bsf eax, edx" \
|
|---|
| 519 | "add eax, edi" \
|
|---|
| 520 | "done:" \
|
|---|
| 521 | parm [edi] [ecx] \
|
|---|
| 522 | value [eax] \
|
|---|
| 523 | modify exact [eax ecx edx edi];
|
|---|
| 524 | #endif
|
|---|
| 525 |
|
|---|
| 526 | /* ASMBitNextClear: Too much work, do when needed. */
|
|---|
| 527 |
|
|---|
| 528 | /** @todo this is way to much inline assembly, better off in an external function. */
|
|---|
| 529 | #undef ASMBitFirstSet
|
|---|
| 530 | #ifdef IPRT_ASM_WATCOM_X86_32_WITH_PRAGMAS
|
|---|
| 531 | #pragma aux ASMBitFirstSet = \
|
|---|
| 532 | "mov edx, edi" /* save start of bitmap for later */ \
|
|---|
| 533 | "add ecx, 31" \
|
|---|
| 534 | "shr ecx, 5" /* cDWord = RT_ALIGN_32(cBits, 32) / 32; */ \
|
|---|
| 535 | "mov eax, 0ffffffffh" \
|
|---|
| 536 | "repe scasd" \
|
|---|
| 537 | "je done" \
|
|---|
| 538 | "lea edi, [edi - 4]" /* rewind edi */ \
|
|---|
| 539 | "mov eax, [edi]" /* reload previous dword */ \
|
|---|
| 540 | "sub edi, edx" /* calc byte offset */ \
|
|---|
| 541 | "shl edi, 3" /* convert byte to bit offset */ \
|
|---|
| 542 | "mov edx, eax" \
|
|---|
| 543 | "bsf eax, edx" \
|
|---|
| 544 | "add eax, edi" \
|
|---|
| 545 | "done:" \
|
|---|
| 546 | parm [edi] [ecx] \
|
|---|
| 547 | value [eax] \
|
|---|
| 548 | modify exact [eax ecx edx edi];
|
|---|
| 549 | #endif
|
|---|
| 550 |
|
|---|
| 551 | /* ASMBitNextSet: Too much work, do when needed. */
|
|---|
| 552 | #else
|
|---|
| 553 | /* ASMBitFirstClear: External file. */
|
|---|
| 554 | /* ASMBitNextClear: External file. */
|
|---|
| 555 | /* ASMBitFirstSet: External file. */
|
|---|
| 556 | /* ASMBitNextSet: External file. */
|
|---|
| 557 | #endif
|
|---|
| 558 |
|
|---|
| 559 | #undef ASMBitFirstSetU32
|
|---|
| 560 | #ifdef IPRT_ASM_WATCOM_X86_32_WITH_PRAGMAS
|
|---|
| 561 | #pragma aux ASMBitFirstSetU32 = \
|
|---|
| 562 | "bsf eax, eax" \
|
|---|
| 563 | "jz not_found" \
|
|---|
| 564 | "inc eax" \
|
|---|
| 565 | "jmp done" \
|
|---|
| 566 | "not_found:" \
|
|---|
| 567 | "xor eax, eax" \
|
|---|
| 568 | "done:" \
|
|---|
| 569 | parm [eax] nomemory \
|
|---|
| 570 | value [eax] \
|
|---|
| 571 | modify exact [eax] nomemory;
|
|---|
| 572 | #endif
|
|---|
| 573 |
|
|---|
| 574 | #undef ASMBitFirstSetU64
|
|---|
| 575 | #ifdef IPRT_ASM_WATCOM_X86_32_WITH_PRAGMAS
|
|---|
| 576 | #pragma aux ASMBitFirstSetU64 = \
|
|---|
| 577 | "bsf eax, eax" \
|
|---|
| 578 | "jz not_found_low" \
|
|---|
| 579 | "inc eax" \
|
|---|
| 580 | "jmp done" \
|
|---|
| 581 | \
|
|---|
| 582 | "not_found_low:" \
|
|---|
| 583 | "bsf eax, edx" \
|
|---|
| 584 | "jz not_found_high" \
|
|---|
| 585 | "add eax, 33" \
|
|---|
| 586 | "jmp done" \
|
|---|
| 587 | \
|
|---|
| 588 | "not_found_high:" \
|
|---|
| 589 | "xor eax, eax" \
|
|---|
| 590 | "done:" \
|
|---|
| 591 | parm [eax edx] nomemory \
|
|---|
| 592 | value [eax] \
|
|---|
| 593 | modify exact [eax] nomemory;
|
|---|
| 594 | #endif
|
|---|
| 595 |
|
|---|
| 596 | #undef ASMBitFirstSetU16
|
|---|
| 597 | #ifdef IPRT_ASM_WATCOM_X86_32_WITH_PRAGMAS
|
|---|
| 598 | #pragma aux ASMBitFirstSetU16 = \
|
|---|
| 599 | "movzx eax, ax" \
|
|---|
| 600 | "bsf eax, eax" \
|
|---|
| 601 | "jz not_found" \
|
|---|
| 602 | "inc eax" \
|
|---|
| 603 | "jmp done" \
|
|---|
| 604 | "not_found:" \
|
|---|
| 605 | "xor eax, eax" \
|
|---|
| 606 | "done:" \
|
|---|
| 607 | parm [ax] nomemory \
|
|---|
| 608 | value [eax] \
|
|---|
| 609 | modify exact [eax] nomemory;
|
|---|
| 610 | #endif
|
|---|
| 611 |
|
|---|
| 612 | #undef ASMBitLastSetU32
|
|---|
| 613 | #ifdef IPRT_ASM_WATCOM_X86_32_WITH_PRAGMAS
|
|---|
| 614 | #pragma aux ASMBitLastSetU32 = \
|
|---|
| 615 | "bsr eax, eax" \
|
|---|
| 616 | "jz not_found" \
|
|---|
| 617 | "inc eax" \
|
|---|
| 618 | "jmp done" \
|
|---|
| 619 | "not_found:" \
|
|---|
| 620 | "xor eax, eax" \
|
|---|
| 621 | "done:" \
|
|---|
| 622 | parm [eax] nomemory \
|
|---|
| 623 | value [eax] \
|
|---|
| 624 | modify exact [eax] nomemory;
|
|---|
| 625 | #endif
|
|---|
| 626 |
|
|---|
| 627 | #undef ASMBitLastSetU64
|
|---|
| 628 | #ifdef IPRT_ASM_WATCOM_X86_32_WITH_PRAGMAS
|
|---|
| 629 | #pragma aux ASMBitLastSetU64 = \
|
|---|
| 630 | "xchg eax, edx" \
|
|---|
| 631 | "bsr eax, eax" \
|
|---|
| 632 | "jz not_found_high" \
|
|---|
| 633 | "add eax, 33" \
|
|---|
| 634 | "jmp done" \
|
|---|
| 635 | \
|
|---|
| 636 | "not_found_high:" \
|
|---|
| 637 | "bsr eax, edx" \
|
|---|
| 638 | "jz not_found" \
|
|---|
| 639 | "inc eax" \
|
|---|
| 640 | "jmp done" \
|
|---|
| 641 | \
|
|---|
| 642 | "not_found:" \
|
|---|
| 643 | "xor eax, eax" \
|
|---|
| 644 | "done:" \
|
|---|
| 645 | parm [eax edx] nomemory \
|
|---|
| 646 | value [eax] \
|
|---|
| 647 | modify exact [eax edx] nomemory;
|
|---|
| 648 | #endif
|
|---|
| 649 |
|
|---|
| 650 | #undef ASMBitLastSetU16
|
|---|
| 651 | #ifdef IPRT_ASM_WATCOM_X86_32_WITH_PRAGMAS
|
|---|
| 652 | #pragma aux ASMBitLastSetU16 = \
|
|---|
| 653 | "movzx eax, ax" \
|
|---|
| 654 | "bsr eax, eax" \
|
|---|
| 655 | "jz not_found" \
|
|---|
| 656 | "inc eax" \
|
|---|
| 657 | "jmp done" \
|
|---|
| 658 | "not_found:" \
|
|---|
| 659 | "xor eax, eax" \
|
|---|
| 660 | "done:" \
|
|---|
| 661 | parm [ax] nomemory \
|
|---|
| 662 | value [eax] \
|
|---|
| 663 | modify exact [eax] nomemory;
|
|---|
| 664 | #endif
|
|---|
| 665 |
|
|---|
| 666 | #undef ASMByteSwapU16
|
|---|
| 667 | #ifdef IPRT_ASM_WATCOM_X86_32_WITH_PRAGMAS
|
|---|
| 668 | #pragma aux ASMByteSwapU16 = \
|
|---|
| 669 | "ror ax, 8" \
|
|---|
| 670 | parm [ax] nomemory \
|
|---|
| 671 | value [ax] \
|
|---|
| 672 | modify exact [ax] nomemory;
|
|---|
| 673 | #endif
|
|---|
| 674 |
|
|---|
| 675 | #undef ASMByteSwapU32
|
|---|
| 676 | #ifdef IPRT_ASM_WATCOM_X86_32_WITH_PRAGMAS
|
|---|
| 677 | #pragma aux ASMByteSwapU32 = \
|
|---|
| 678 | "bswap eax" \
|
|---|
| 679 | parm [eax] nomemory \
|
|---|
| 680 | value [eax] \
|
|---|
| 681 | modify exact [eax] nomemory;
|
|---|
| 682 | #endif
|
|---|
| 683 |
|
|---|
| 684 | #undef ASMRotateLeftU32
|
|---|
| 685 | #ifdef IPRT_ASM_WATCOM_X86_32_WITH_PRAGMAS
|
|---|
| 686 | #pragma aux ASMRotateLeftU32 = \
|
|---|
| 687 | "rol eax, cl" \
|
|---|
| 688 | parm [eax] [ecx] nomemory \
|
|---|
| 689 | value [eax] \
|
|---|
| 690 | modify exact [eax] nomemory;
|
|---|
| 691 | #endif
|
|---|
| 692 |
|
|---|
| 693 | #undef ASMRotateRightU32
|
|---|
| 694 | #ifdef IPRT_ASM_WATCOM_X86_32_WITH_PRAGMAS
|
|---|
| 695 | #pragma aux ASMRotateRightU32 = \
|
|---|
| 696 | "ror eax, cl" \
|
|---|
| 697 | parm [eax] [ecx] nomemory \
|
|---|
| 698 | value [eax] \
|
|---|
| 699 | modify exact [eax] nomemory;
|
|---|
| 700 | #endif
|
|---|
| 701 |
|
|---|
| 702 | #endif /* !IPRT_INCLUDED_asm_watcom_x86_32_h */
|
|---|
| 703 |
|
|---|
