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reorganize files and add missing includes

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Lysann Tranvouez 2025-09-28 00:42:23 +02:00
parent d80ec89490
commit 21cd133480
5 changed files with 13 additions and 4 deletions
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arm64/detours_arm64.h
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// Copyright (c) Microsoft Corporation. All rights reserved.
// Copyright (c) Lysann Tranvouez. All rights reserved.
#pragma once
#ifndef MACH_DETOURS_ARM64_H
#define MACH_DETOURS_ARM64_H
typedef struct detour_align
{
uint8_t obTarget;
uint8_t obTrampoline;
} detour_align;
typedef struct detour_trampoline
{
// An ARM64 instruction is 4 bytes long.
//
// The overwrite is always composed of 3 instructions (12 bytes) which perform an indirect jump
// using _DETOUR_TRAMPOLINE::pbDetour as the address holding the target location.
//
// Copied instructions can expand.
//
// The scheme using MovImmediate can cause an instruction
// to grow as much as 6 times.
// That would be Bcc or Tbz with a large address space:
// 4 instructions to form immediate
// inverted tbz/bcc
// br
//
// An expansion of 4 is not uncommon -- bl/blr and small address space:
// 3 instructions to form immediate
// br or brl
//
// A theoretical maximum for rbCode is thefore 4*4*6 + 16 = 112 (another 16 for jmp to pbRemain).
//
// With literals, the maximum expansion is 5, including the literals: 4*4*5 + 16 = 96.
//
// The number is rounded up to 128. m_rbScratchDst should match this.
//
uint8_t rbCode[128]; // target code + jmp to pbRemain
uint8_t cbCode; // size of moved target code.
uint8_t cbCodeBreak[3]; // padding to make debugging easier.
uint8_t rbRestore[24]; // original target code.
uint8_t cbRestore; // size of original target code.
uint8_t cbRestoreBreak[3]; // padding to make debugging easier.
detour_align rAlign[8]; // instruction alignment array.
uint8_t* pbRemain; // first instruction after moved code. [free list]
uint8_t* pbDetour; // first instruction of detour function.
} detour_trampoline;
static_assert(sizeof(detour_trampoline) == 192);
#endif //MACH_DETOURS_ARM64_H