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popnhax/minhook/trampoline.h
CrazyRedMachine 698e9c5476 Omnimix v2
2023-02-10 20:33:37 +01:00

106 lines
3.7 KiB
C

/*
* MinHook - The Minimalistic API Hooking Library for x64/x86
* Copyright (C) 2009-2017 Tsuda Kageyu.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
* PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER
* OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#pragma once
#pragma pack(push, 1)
// Structs for writing x86/x64 instructions.
// 8-bit relative jump.
typedef struct _JMP_REL_SHORT
{
UINT8 opcode; // EB xx: JMP +2+xx
UINT8 operand;
} JMP_REL_SHORT, *PJMP_REL_SHORT;
// 32-bit direct relative jump/call.
typedef struct _JMP_REL
{
UINT8 opcode; // E9/E8 xxxxxxxx: JMP/CALL +5+xxxxxxxx
UINT32 operand; // Relative destination address
} JMP_REL, *PJMP_REL, CALL_REL;
// 64-bit indirect absolute jump.
typedef struct _JMP_ABS
{
UINT8 opcode0; // FF25 00000000: JMP [+6]
UINT8 opcode1;
UINT32 dummy;
UINT64 address; // Absolute destination address
} JMP_ABS, *PJMP_ABS;
// 64-bit indirect absolute call.
typedef struct _CALL_ABS
{
UINT8 opcode0; // FF15 00000002: CALL [+6]
UINT8 opcode1;
UINT32 dummy0;
UINT8 dummy1; // EB 08: JMP +10
UINT8 dummy2;
UINT64 address; // Absolute destination address
} CALL_ABS;
// 32-bit direct relative conditional jumps.
typedef struct _JCC_REL
{
UINT8 opcode0; // 0F8* xxxxxxxx: J** +6+xxxxxxxx
UINT8 opcode1;
UINT32 operand; // Relative destination address
} JCC_REL;
// 64bit indirect absolute conditional jumps that x64 lacks.
typedef struct _JCC_ABS
{
UINT8 opcode; // 7* 0E: J** +16
UINT8 dummy0;
UINT8 dummy1; // FF25 00000000: JMP [+6]
UINT8 dummy2;
UINT32 dummy3;
UINT64 address; // Absolute destination address
} JCC_ABS;
#pragma pack(pop)
typedef struct _TRAMPOLINE
{
LPVOID pTarget; // [In] Address of the target function.
LPVOID pDetour; // [In] Address of the detour function.
LPVOID pTrampoline; // [In] Buffer address for the trampoline and relay function.
#if defined(_M_X64) || defined(__x86_64__)
LPVOID pRelay; // [Out] Address of the relay function.
#endif
BOOL patchAbove; // [Out] Should use the hot patch area?
UINT nIP; // [Out] Number of the instruction boundaries.
UINT8 oldIPs[8]; // [Out] Instruction boundaries of the target function.
UINT8 newIPs[8]; // [Out] Instruction boundaries of the trampoline function.
} TRAMPOLINE, *PTRAMPOLINE;
BOOL CreateTrampolineFunction(PTRAMPOLINE ct);