106 lines
3.6 KiB
C
106 lines
3.6 KiB
C
/*
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* MinHook - The Minimalistic API Hooking Library for x64/x86
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* Copyright (C) 2009-2015 Tsuda Kageyu.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
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* PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER
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* OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
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* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#pragma once
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#pragma pack(push, 1)
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// Structs for writing x86/x64 instructions.
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// 8-bit relative jump.
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typedef struct _JMP_REL_SHORT
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{
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UINT8 opcode; // EB xx: JMP +2+xx
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UINT8 operand;
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} JMP_REL_SHORT, *PJMP_REL_SHORT;
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// 32-bit direct relative jump/call.
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typedef struct _JMP_REL
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{
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UINT8 opcode; // E9/E8 xxxxxxxx: JMP/CALL +5+xxxxxxxx
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UINT32 operand; // Relative destination address
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} JMP_REL, *PJMP_REL, CALL_REL;
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// 64-bit indirect absolute jump.
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typedef struct _JMP_ABS
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{
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UINT8 opcode0; // FF25 00000000: JMP [+6]
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UINT8 opcode1;
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UINT32 dummy;
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UINT64 address; // Absolute destination address
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} JMP_ABS, *PJMP_ABS;
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// 64-bit indirect absolute call.
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typedef struct _CALL_ABS
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{
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UINT8 opcode0; // FF15 00000002: CALL [+6]
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UINT8 opcode1;
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UINT32 dummy0;
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UINT8 dummy1; // EB 08: JMP +10
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UINT8 dummy2;
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UINT64 address; // Absolute destination address
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} CALL_ABS;
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// 32-bit direct relative conditional jumps.
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typedef struct _JCC_REL
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{
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UINT8 opcode0; // 0F8* xxxxxxxx: J** +6+xxxxxxxx
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UINT8 opcode1;
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UINT32 operand; // Relative destination address
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} JCC_REL;
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// 64bit indirect absolute conditional jumps that x64 lacks.
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typedef struct _JCC_ABS
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{
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UINT8 opcode; // 7* 0E: J** +16
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UINT8 dummy0;
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UINT8 dummy1; // FF25 00000000: JMP [+6]
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UINT8 dummy2;
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UINT32 dummy3;
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UINT64 address; // Absolute destination address
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} JCC_ABS;
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#pragma pack(pop)
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typedef struct _TRAMPOLINE
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{
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LPVOID pTarget; // [In] Address of the target function.
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LPVOID pDetour; // [In] Address of the detour function.
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LPVOID pTrampoline; // [In] Buffer address for the trampoline and relay function.
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#ifdef _M_X64
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LPVOID pRelay; // [Out] Address of the relay function.
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#endif
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BOOL patchAbove; // [Out] Should use the hot patch area?
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UINT nIP; // [Out] Number of the instruction boundaries.
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UINT8 oldIPs[8]; // [Out] Instruction boundaries of the target function.
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UINT8 newIPs[8]; // [Out] Instruction boundaries of the trampoline function.
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} TRAMPOLINE, *PTRAMPOLINE;
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BOOL CreateTrampolineFunction(PTRAMPOLINE ct);
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