source: vbox/trunk/src/VBox/VMM/VMMR3/PATMA.mac@ 74795

; $Id: PATMA.mac 69221 2017-10-24 15:07:46Z vboxsync $
;; @file
; PATM macros & definitions (identical to PATMA.h!).
;

;
; Copyright (C) 2006-2017 Oracle Corporation
;
; This file is part of VirtualBox Open Source Edition (OSE), as
; available from http://www.virtualbox.org. This file is free software;
; you can redistribute it and/or modify it under the terms of the GNU
; General Public License (GPL) as published by the Free Software
; Foundation, in version 2 as it comes in the "COPYING" file of the
; VirtualBox OSE distribution. VirtualBox OSE is distributed in the
; hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
;

; hardcoded dependency on single byte int 3
%define PATM_INT3            int3

;; @name Patch Fixup Types
; @remarks These fixups types are part of the saved state.
; @{
%define PATM_ASMFIX_VMFLAGS                     0xF1ABCD00
%ifdef VBOX_WITH_STATISTICS
 %define PATM_ASMFIX_ALLPATCHCALLS              0xF1ABCD01
 %define PATM_ASMFIX_PERPATCHCALLS              0xF1ABCD02
%endif
%define PATM_ASMFIX_JUMPDELTA                   0xF1ABCD03
%ifdef VBOX_WITH_STATISTICS
 %define PATM_ASMFIX_IRETEFLAGS                 0xF1ABCD04
 %define PATM_ASMFIX_IRETCS                     0xF1ABCD05
 %define PATM_ASMFIX_IRETEIP                    0xF1ABCD06
%endif
%define PATM_ASMFIX_FIXUP                       0xF1ABCD07
%define PATM_ASMFIX_PENDINGACTION               0xF1ABCD08
%define PATM_ASMFIX_CPUID_STD_PTR               0xF1ABCD09
%define PATM_ASMFIX_CPUID_EXT_PTR               0xF1ABCD0a
%define PATM_ASMFIX_CPUID_DEF_PTR               0xF1ABCD0b
%define PATM_ASMFIX_STACKBASE                   0xF1ABCD0c  ;;< Stack to store our private patch return addresses
%define PATM_ASMFIX_STACKBASE_GUEST             0xF1ABCD0d  ;;< Stack to store guest return addresses
%define PATM_ASMFIX_STACKPTR                    0xF1ABCD0e
%define PATM_ASMFIX_PATCHBASE                   0xF1ABCD0f
%define PATM_ASMFIX_INTERRUPTFLAG               0xF1ABCD10
%define PATM_ASMFIX_INHIBITIRQADDR              0xF1ABCD11
%define PATM_ASMFIX_VM_FORCEDACTIONS            0xF1ABCD12
%define PATM_ASMFIX_TEMP_EAX                    0xF1ABCD13  ;;< Location for original EAX register
%define PATM_ASMFIX_TEMP_ECX                    0xF1ABCD14  ;;< Location for original ECX register
%define PATM_ASMFIX_TEMP_EDI                    0xF1ABCD15  ;;< Location for original EDI register
%define PATM_ASMFIX_TEMP_EFLAGS                 0xF1ABCD16  ;;< Location for original eflags
%define PATM_ASMFIX_TEMP_RESTORE_FLAGS          0xF1ABCD17  ;;< Which registers to restore
%define PATM_ASMFIX_CALL_PATCH_TARGET_ADDR      0xF1ABCD18
%define PATM_ASMFIX_CALL_RETURN_ADDR            0xF1ABCD19
%define PATM_ASMFIX_CPUID_CENTAUR_PTR           0xF1ABCD1a
%define PATM_ASMFIX_REUSE_LATER_0               0xF1ABCD1b
%define PATM_ASMFIX_REUSE_LATER_1               0xF1ABCD1c
%define PATM_ASMFIX_REUSE_LATER_2               0xF1ABCD1d
%define PATM_ASMFIX_REUSE_LATER_3               0xF1ABCD1e
%define PATM_ASMFIX_PATCH_HLP_CPUM_CPUID        0xF1ABCD1f

;/* Anything larger doesn't require a fixup */
%define PATM_ASMFIX_NO_FIXUP                    0xF1ABCE00
%define PATM_ASMFIX_CPUID_STD_MAX               0xF1ABCE00
%define PATM_ASMFIX_CPUID_EXT_MAX               0xF1ABCE01
%define PATM_ASMFIX_RETURNADDR                  0xF1ABCE02
%define PATM_ASMFIX_PATCHNEXTBLOCK              0xF1ABCE03
%define PATM_ASMFIX_CALLTARGET                  0xF1ABCE04  ;;< relative call target
%define PATM_ASMFIX_NEXTINSTRADDR               0xF1ABCE05  ;;< absolute guest address of the next instruction
%define PATM_ASMFIX_CURINSTRADDR                0xF1ABCE06  ;;< absolute guest address of the current instruction
%define PATM_ASMFIX_LOOKUP_AND_CALL_FUNCTION    0xF1ABCE07  ;;< Relative address of global PATM lookup and call function.
%define PATM_ASMFIX_RETURN_FUNCTION             0xF1ABCE08  ;;< Relative address of global PATM return function.
%define PATM_ASMFIX_LOOKUP_AND_JUMP_FUNCTION    0xF1ABCE09  ;;< Relative address of global PATM lookup and jump function.
%define PATM_ASMFIX_IRET_FUNCTION               0xF1ABCE0A  ;;< Relative address of global PATM iret function.
%define PATM_ASMFIX_CPUID_CENTAUR_MAX           0xF1ABCE0B
;; @}


;; Everything except IOPL, NT, IF, VM, VIF, VIP and RF
%define PATM_FLAGS_MASK      (X86_EFL_CF|X86_EFL_PF|X86_EFL_AF|X86_EFL_ZF|X86_EFL_SF|X86_EFL_TF|X86_EFL_DF|X86_EFL_OF|X86_EFL_AC|X86_EFL_ID)

; currently only IF & IOPL
%define PATM_VIRTUAL_FLAGS_MASK (X86_EFL_IF|X86_EFL_IOPL)

; PATM stack size (identical in PATMA.h!!)
%define PATM_STACK_SIZE                    (4096)
%define PATM_STACK_TOTAL_SIZE              (2 * PATM_STACK_SIZE)
%define PATM_MAX_STACK                     (PATM_STACK_SIZE / RTRCPTR_CB)

;; @name Patch Manager pending actions (in GCSTATE).
;; @{
%define PATM_ACTION_LOOKUP_ADDRESS              1
%define PATM_ACTION_DISPATCH_PENDING_IRQ        2
%define PATM_ACTION_PENDING_IRQ_AFTER_IRET      3
%define PATM_ACTION_DO_V86_IRET                 4
%define PATM_ACTION_LOG_IF1                     5
%define PATM_ACTION_LOG_CLI                     6
%define PATM_ACTION_LOG_STI                     7
%define PATM_ACTION_LOG_POPF_IF1                8
%define PATM_ACTION_LOG_POPF_IF0                9
%define PATM_ACTION_LOG_PUSHF                   10
%define PATM_ACTION_LOG_IRET                    11
%define PATM_ACTION_LOG_RET                     12
%define PATM_ACTION_LOG_CALL                    13
%define PATM_ACTION_LOG_GATE_ENTRY              14
;; @}

;; Magic dword found in ecx for patm pending actions.
%define PATM_ACTION_MAGIC                       0xABCD4321

;; @name PATM_ASMFIX_TEMP_RESTORE_FLAGS
;; @{
%define PATM_RESTORE_EAX                        RT_BIT(0)
%define PATM_RESTORE_ECX                        RT_BIT(1)
%define PATM_RESTORE_EDI                        RT_BIT(2)
;; @}


;;
; Relocation entry for PATCHASMRECORD.
;
struc PATCHASMRELOC
    ;; The relocation type.
    .uType              resd 1
    ;; Additional information specific to the relocation type.
    .uCode              resd 1
endstruc

;;
; Assembly patch descriptor record.
;
struc PATCHASMRECORD
    ;; Pointer to the patch code.
    .pbFunction         RTCCPTR_RES 1
    ;; Offset of the jump table?
    .offJump            resd 1
    ;; Used only by loop/loopz/loopnz.
    .offRelJump         resd 1
    ;; Size override byte position.
    .offSizeOverride    resd 1
    ;; The size of the patch function.
    .cbFunction         resd 1
    ;; The number of relocations in aRelocs.
    .cRelocs            resd 1
    ;; Variable sized relocation table. (put after the iend, so no included)
    ;.aRelocs            resb PATCHASMRELOC_size
endstruc

;/* For indirect calls/jump (identical in PATMA.h & PATMA.mac!) */
%define PATM_MAX_JUMPTABLE_ENTRIES        16

struc PATCHJUMPTABLE
    .nrSlots         resw    1
    .ulInsertPos     resw    1
    .cAddresses      resd    1
    ; array of pInstrGC and pRelPatchGC pairs (nrSlot times)
    .Slot_pInstrGC   resd    1
    .Slot_pRelPatchGC resd   1
endstruc

;/* Must match structure size!!
%define PATCHJUMPTABLE_SIZE    (PATM_MAX_JUMPTABLE_ENTRIES*2*4)
;/* Direct calls need only one lookup slot */
%define PATCHDIRECTJUMPTABLE_SIZE (2*4)