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[new] 引入 [MonoHook](https://github.com/Misaka-Mikoto-Tech/MonoHook) 彻底解决获得2021版本iOS平台裁剪后AOT dll的问题，不再需要修改UnityEditor.CoreModule.dll

main
walon 2023-02-06 20:48:22 +08:00
parent fdba92588a
commit b5a7899657
25 changed files with 2396 additions and 9 deletions
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using DotNetDetour;
using System;
using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using System.Linq;
namespace MonoHook
{
public unsafe abstract class CodePatcher
{
public bool isValid { get; protected set; }
protected void* _pTarget, _pReplace, _pProxy;
protected int _jmpCodeSize;
protected byte[] _targetHeaderBackup;
public CodePatcher(IntPtr target, IntPtr replace, IntPtr proxy, int jmpCodeSize)
{
_pTarget = target.ToPointer();
_pReplace = replace.ToPointer();
_pProxy = proxy.ToPointer();
_jmpCodeSize = jmpCodeSize;
}
public void ApplyPatch()
{
BackupHeader();
EnableAddrModifiable();
PatchTargetMethod();
PatchProxyMethod();
FlushICache();
}
public void RemovePatch()
{
if (_targetHeaderBackup == null)
return;
EnableAddrModifiable();
RestoreHeader();
FlushICache();
}
protected void BackupHeader()
{
if (_targetHeaderBackup != null)
return;
uint requireSize = LDasm.SizeofMinNumByte(_pTarget, _jmpCodeSize);
_targetHeaderBackup = new byte[requireSize];
fixed (void* ptr = _targetHeaderBackup)
HookUtils.MemCpy(ptr, _pTarget, _targetHeaderBackup.Length);
}
protected void RestoreHeader()
{
if (_targetHeaderBackup == null)
return;
HookUtils.MemCpy_Jit(_pTarget, _targetHeaderBackup);
}
protected void PatchTargetMethod()
{
byte[] buff = GenJmpCode(_pTarget, _pReplace);
HookUtils.MemCpy_Jit(_pTarget, buff);
}
protected void PatchProxyMethod()
{
if (_pProxy == null)
return;
// copy target's code to proxy
HookUtils.MemCpy_Jit(_pProxy, _targetHeaderBackup);
// jmp to target's new position
long jmpFrom = (long)_pProxy + _targetHeaderBackup.Length;
long jmpTo = (long)_pTarget + _targetHeaderBackup.Length;
byte[] buff = GenJmpCode((void*)jmpFrom, (void*)jmpTo);
HookUtils.MemCpy_Jit((void*)jmpFrom, buff);
}
protected void FlushICache()
{
HookUtils.FlushICache(_pTarget, _targetHeaderBackup.Length);
HookUtils.FlushICache(_pProxy, _targetHeaderBackup.Length * 2);
}
protected abstract byte[] GenJmpCode(void* jmpFrom, void* jmpTo);
#if ENABLE_HOOK_DEBUG
protected string PrintAddrs()
{
if (IntPtr.Size == 4)
return $"target:0x{(uint)_pTarget:x}, replace:0x{(uint)_pReplace:x}, proxy:0x{(uint)_pProxy:x}";
else
return $"target:0x{(ulong)_pTarget:x}, replace:0x{(ulong)_pReplace:x}, proxy:0x{(ulong)_pProxy:x}";
}
#endif
private void EnableAddrModifiable()
{
HookUtils.SetAddrFlagsToRWX(new IntPtr(_pTarget), _targetHeaderBackup.Length);
HookUtils.SetAddrFlagsToRWX(new IntPtr(_pProxy), _targetHeaderBackup.Length + _jmpCodeSize);
}
}
public unsafe class CodePatcher_x86 : CodePatcher
{
protected static readonly byte[] s_jmpCode = new byte[] // 5 bytes
{
0xE9, 0x00, 0x00, 0x00, 0x00, // jmp $val ; $val = $dst - $src - 5
};
public CodePatcher_x86(IntPtr target, IntPtr replace, IntPtr proxy) : base(target, replace, proxy, s_jmpCode.Length) { }
protected override unsafe byte[] GenJmpCode(void* jmpFrom, void* jmpTo)
{
byte[] ret = new byte[s_jmpCode.Length];
int val = (int)jmpTo - (int)jmpFrom - 5;
fixed(void * p = &ret[0])
{
byte* ptr = (byte*)p;
*ptr = 0xE9;
int* pOffset = (int*)(ptr + 1);
*pOffset = val;
}
return ret;
}
}
/// <summary>
/// x64下2G 内的跳转
/// </summary>
public unsafe class CodePatcher_x64_near : CodePatcher_x86 // x64_near pathcer code is same to x86
{
public CodePatcher_x64_near(IntPtr target, IntPtr replace, IntPtr proxy) : base(target, replace, proxy) { }
}
/// <summary>
/// x64下距离超过2G的跳转
/// </summary>
public unsafe class CodePatcher_x64_far : CodePatcher
{
protected static readonly byte[] s_jmpCode = new byte[] // 12 bytes
{
// 由于 rax 会被函数作为返回值修改，并且不会被做为参数使用，因此修改是安全的
0x48, 0xB8, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // mov rax, <jmpTo>
0x50, // push rax
0xC3 // ret
};
//protected static readonly byte[] s_jmpCode2 = new byte[] // 14 bytes
//{
// 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // <jmpTo>
// 0xFF, 0x25, 0xF2, 0xFF, 0xFF, 0xFF // jmp [rip - 0xe]
//};
public CodePatcher_x64_far(IntPtr target, IntPtr replace, IntPtr proxy) : base(target, replace, proxy, s_jmpCode.Length) { }
protected override unsafe byte[] GenJmpCode(void* jmpFrom, void* jmpTo)
{
byte[] ret = new byte[s_jmpCode.Length];
fixed (void* p = &ret[0])
{
byte* ptr = (byte*)p;
*ptr++ = 0x48;
*ptr++ = 0xB8;
*(long*)ptr = (long)jmpTo;
ptr += 8;
*ptr++ = 0x50;
*ptr++ = 0xC3;
}
return ret;
}
}
public unsafe class CodePatcher_arm32_near : CodePatcher
{
private static readonly byte[] s_jmpCode = new byte[] // 4 bytes
{
0x00, 0x00, 0x00, 0xEA, // B $val ; $val = (($dst - $src) / 4 - 2) & 0x1FFFFFF
};
public CodePatcher_arm32_near(IntPtr target, IntPtr replace, IntPtr proxy) : base(target, replace, proxy, s_jmpCode.Length)
{
if (Math.Abs((long)target - (long)replace) >= ((1 << 25) - 1))
throw new ArgumentException("address offset of target and replace must less than ((1 << 25) - 1)");
#if ENABLE_HOOK_DEBUG
Debug.Log($"CodePatcher_arm32_near: {PrintAddrs()}");
#endif
}
protected override unsafe byte[] GenJmpCode(void* jmpFrom, void* jmpTo)
{
byte[] ret = new byte[s_jmpCode.Length];
int val = ((int)jmpTo - (int)jmpFrom) / 4 - 2;
fixed (void* p = &ret[0])
{
byte* ptr = (byte*)p;
*ptr++ = (byte)val;
*ptr++ = (byte)(val >> 8);
*ptr++ = (byte)(val >> 16);
*ptr++ = 0xEA;
}
return ret;
}
}
public unsafe class CodePatcher_arm32_far : CodePatcher
{
private static readonly byte[] s_jmpCode = new byte[] // 8 bytes
{
0x04, 0xF0, 0x1F, 0xE5, // LDR PC, [PC, #-4]
0x00, 0x00, 0x00, 0x00, // $val
};
public CodePatcher_arm32_far(IntPtr target, IntPtr replace, IntPtr proxy) : base(target, replace, proxy, s_jmpCode.Length)
{
if (Math.Abs((long)target - (long)replace) < ((1 << 25) - 1))
throw new ArgumentException("address offset of target and replace must larger than ((1 << 25) - 1), please use InstructionModifier_arm32_near instead");
#if ENABLE_HOOK_DEBUG
Debug.Log($"CodePatcher_arm32_far: {PrintAddrs()}");
#endif
}
protected override unsafe byte[] GenJmpCode(void* jmpFrom, void* jmpTo)
{
byte[] ret = new byte[s_jmpCode.Length];
fixed (void* p = &ret[0])
{
uint* ptr = (uint*)p;
*ptr++ = 0xE51FF004;
*ptr = (uint)jmpTo;
}
return ret;
}
}
/// <summary>
/// arm64 下 ±128MB 范围内的跳转
/// </summary>
public unsafe class CodePatcher_arm64_near : CodePatcher
{
private static readonly byte[] s_jmpCode = new byte[] // 4 bytes
{
/*
* from 0x14 to 0x17 is B opcode
* offset bits is 26
* https://developer.arm.com/documentation/ddi0596/2021-09/Base-Instructions/B--Branch-
*/
0x00, 0x00, 0x00, 0x14, // B $val ; $val = (($dst - $src)/4) & 7FFFFFF
};
public CodePatcher_arm64_near(IntPtr target, IntPtr replace, IntPtr proxy) : base(target, replace, proxy, s_jmpCode.Length)
{
if (Math.Abs((long)target - (long)replace) >= ((1 << 26) - 1) * 4)
throw new ArgumentException("address offset of target and replace must less than (1 << 26) - 1) * 4");
#if ENABLE_HOOK_DEBUG
Debug.Log($"CodePatcher_arm64: {PrintAddrs()}");
#endif
}
protected override unsafe byte[] GenJmpCode(void* jmpFrom, void* jmpTo)
{
byte[] ret = new byte[s_jmpCode.Length];
int val = (int)((long)jmpTo - (long)jmpFrom) / 4;
fixed (void* p = &ret[0])
{
byte* ptr = (byte*)p;
*ptr++ = (byte)val;
*ptr++ = (byte)(val >> 8);
*ptr++ = (byte)(val >> 16);
byte last = (byte)(val >> 24);
last &= 0b11;
last |= 0x14;
*ptr = last;
}
return ret;
}
}
/// <summary>
/// arm64 远距离跳转
/// </summary>
public unsafe class CodePatcher_arm64_far : CodePatcher
{
private static readonly byte[] s_jmpCode = new byte[] // 20 bytes(字节数过多，太危险了，不建议使用)
{
/*
* ADR: https://developer.arm.com/documentation/ddi0596/2021-09/Base-Instructions/ADR--Form-PC-relative-address-
* BR: https://developer.arm.com/documentation/ddi0596/2021-09/Base-Instructions/BR--Branch-to-Register-
*/
0x6A, 0x00, 0x00, 0x10, // ADR X10, #C
0x4A, 0x01, 0x40, 0xF9, // LDR X10, [X10,#0]
0x40, 0x01, 0x1F, 0xD6, // BR X10
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 // $dst
};
public CodePatcher_arm64_far(IntPtr target, IntPtr replace, IntPtr proxy, int jmpCodeSize) : base(target, replace, proxy, jmpCodeSize)
{
}
protected override unsafe byte[] GenJmpCode(void* jmpFrom, void* jmpTo)
{
throw new NotImplementedException();
}
}
}

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Editor/3rds/UnityHook/CodePatcher.cs.meta Normal file
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MonoImporter:
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74
Editor/3rds/UnityHook/HookPool.cs Normal file
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using System.Collections;
using System.Collections.Generic;
using System.Reflection;
using UnityEngine;
using System.Linq;
using System.IO;
#if UNITY_EDITOR
using UnityEditor;
#endif
namespace MonoHook
{
/// <summary>
/// Hook 池，防止重复 Hook
/// </summary>
public static class HookPool
{
private static Dictionary<MethodBase, MethodHook> _hooks = new Dictionary<MethodBase, MethodHook>();
public static void AddHook(MethodBase method, MethodHook hook)
{
MethodHook preHook;
if (_hooks.TryGetValue(method, out preHook))
{
preHook.Uninstall();
_hooks[method] = hook;
}
else
_hooks.Add(method, hook);
}
public static MethodHook GetHook(MethodBase method)
{
if (method == null) return null;
MethodHook hook;
if (_hooks.TryGetValue(method, out hook))
return hook;
return null;
}
public static void RemoveHooker(MethodBase method)
{
if (method == null) return;
_hooks.Remove(method);
}
public static void UninstallAll()
{
var list = _hooks.Values.ToList();
foreach (var hook in list)
hook.Uninstall();
_hooks.Clear();
}
public static void UninstallByTag(string tag)
{
var list = _hooks.Values.ToList();
foreach (var hook in list)
{
if(hook.tag == tag)
hook.Uninstall();
}
}
public static List<MethodHook> GetAllHooks()
{
return _hooks.Values.ToList();
}
}
}

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Editor/3rds/UnityHook/HookUtils.cs Normal file
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#if !(UNITY_STANDALONE_OSX || UNITY_EDITOR_OSX)
using System;
using System.Collections.Generic;
using System.Reflection;
using System.Runtime.InteropServices;
using System.Text;
using UnityEngine;
namespace MonoHook
{
public static unsafe class HookUtils
{
[UnmanagedFunctionPointer(CallingConvention.Cdecl)]
delegate void DelegateFlushICache(void* code, int size); // delegate * unmanaged[Cdecl] <void, byte, uint> native_flush_cache_fun_ptr; // unsupported at C# 8.0
static DelegateFlushICache flush_icache;
private static readonly long _Pagesize;
static HookUtils()
{
PropertyInfo p_SystemPageSize = typeof(Environment).GetProperty("SystemPageSize");
if (p_SystemPageSize == null)
throw new NotSupportedException("Unsupported runtime");
_Pagesize = (int)p_SystemPageSize.GetValue(null, new object[0]);
SetupFlushICacheFunc();
}
public static void MemCpy(void* pDst, void* pSrc, int len)
{
byte* pDst_ = (byte*)pDst;
byte* pSrc_ = (byte*)pSrc;
for (int i = 0; i < len; i++)
*pDst_++ = *pSrc_++;
}
public static void MemCpy_Jit(void* pDst, byte[] src)
{
fixed (void* p = &src[0])
{
MemCpy(pDst, p, src.Length);
}
}
/// <summary>
/// set flags of address to `read write execute`
/// </summary>
public static void SetAddrFlagsToRWX(IntPtr ptr, int size)
{
if (ptr == IntPtr.Zero)
return;
#if UNITY_STANDALONE_WIN || UNITY_EDITOR_WIN
uint oldProtect;
bool ret = VirtualProtect(ptr, (uint)size, Protection.PAGE_EXECUTE_READWRITE, out oldProtect);
UnityEngine.Debug.Assert(ret);
#else
SetMemPerms(ptr,(ulong)size,MmapProts.PROT_READ | MmapProts.PROT_WRITE | MmapProts.PROT_EXEC);
#endif
}
public static void FlushICache(void* code, int size)
{
if (code == null)
return;
flush_icache?.Invoke(code, size);
#if ENABLE_HOOK_DEBUG
Debug.Log($"flush icache at 0x{(IntPtr.Size == 4 ? (uint)code : (ulong)code):x}, size:{size}");
#endif
}
public static KeyValuePair<long, long> GetPageAlignedAddr(long code, int size)
{
long pagesize = _Pagesize;
long startPage = (code) & ~(pagesize - 1);
long endPage = (code + size + pagesize - 1) & ~(pagesize - 1);
return new KeyValuePair<long, long>(startPage, endPage);
}
const int PRINT_SPLIT = 4;
const int PRINT_COL_SIZE = PRINT_SPLIT * 4;
public static string HexToString(void* ptr, int size, int offset = 0)
{
Func<IntPtr, string> formatAddr = (IntPtr addr__) => IntPtr.Size == 4 ? $"0x{(uint)addr__:x}" : $"0x{(ulong)addr__:x}";
byte* addr = (byte*)ptr;
StringBuilder sb = new StringBuilder(1024);
sb.AppendLine($"addr:{formatAddr(new IntPtr(addr))}");
addr += offset;
size += Math.Abs(offset);
int count = 0;
while (true)
{
sb.Append($"\r\n{formatAddr(new IntPtr(addr + count))}: ");
for (int i = 1; i < PRINT_COL_SIZE + 1; i++)
{
if (count >= size)
goto END;
sb.Append($"{*(addr + count):x2}");
if (i % PRINT_SPLIT == 0)
sb.Append(" ");
count++;
}
}
END:;
return sb.ToString();
}
static void SetupFlushICacheFunc()
{
string processorType = SystemInfo.processorType;
if (processorType.Contains("Intel") || processorType.Contains("AMD"))
return;
if (IntPtr.Size == 4)
{
// never release, so save GCHandle is unnecessary
s_ptr_flush_icache_arm32 = GCHandle.Alloc(s_flush_icache_arm32, GCHandleType.Pinned).AddrOfPinnedObject().ToPointer();
SetAddrFlagsToRWX(new IntPtr(s_ptr_flush_icache_arm32), s_flush_icache_arm32.Length);
flush_icache = Marshal.GetDelegateForFunctionPointer<DelegateFlushICache>(new IntPtr(s_ptr_flush_icache_arm32));
}
else
{
s_ptr_flush_icache_arm64 = GCHandle.Alloc(s_flush_icache_arm64, GCHandleType.Pinned).AddrOfPinnedObject().ToPointer();
SetAddrFlagsToRWX(new IntPtr(s_ptr_flush_icache_arm64), s_flush_icache_arm64.Length);
flush_icache = Marshal.GetDelegateForFunctionPointer<DelegateFlushICache>(new IntPtr(s_ptr_flush_icache_arm64));
}
#if ENABLE_HOOK_DEBUG
Debug.Log($"flush_icache delegate is {((flush_icache != null) ? "not " : "")}null");
#endif
}
static void* s_ptr_flush_icache_arm32, s_ptr_flush_icache_arm64;
private static byte[] s_flush_icache_arm32 = new byte[]
{
// void cdecl mono_arch_flush_icache (guint8 *code, gint size)
0x00, 0x48, 0x2D, 0xE9, // PUSH {R11,LR}
0x0D, 0xB0, 0xA0, 0xE1, // MOV R11, SP
0x08, 0xD0, 0x4D, 0xE2, // SUB SP, SP, #8
0x04, 0x00, 0x8D, 0xE5, // STR R0, [SP,#8+var_4]
0x00, 0x10, 0x8D, 0xE5, // STR R1, [SP,#8+var_8]
0x04, 0x00, 0x9D, 0xE5, // LDR R0, [SP,#8+var_4]
0x04, 0x10, 0x9D, 0xE5, // LDR R1, [SP,#8+var_4]
0x00, 0x20, 0x9D, 0xE5, // LDR R2, [SP,#8+var_8]
0x02, 0x10, 0x81, 0xE0, // ADD R1, R1, R2
0x01, 0x00, 0x00, 0xEB, // BL __clear_cache
0x0B, 0xD0, 0xA0, 0xE1, // MOV SP, R11
0x00, 0x88, 0xBD, 0xE8, // POP {R11,PC}
// __clear_cache ; CODE XREF: j___clear_cache+8↑j
0x80, 0x00, 0x2D, 0xE9, // PUSH { R7 }
0x02, 0x70, 0x00, 0xE3, 0x0F, 0x70, 0x40, 0xE3, // MOV R7, #0xF0002
0x00, 0x20, 0xA0, 0xE3, // MOV R2, #0
0x00, 0x00, 0x00, 0xEF, // SVC 0
0x80, 0x00, 0xBD, 0xE8, // POP {R7}
0x1E, 0xFF, 0x2F, 0xE1, // BX LR
};
private static byte[] s_flush_icache_arm64 = new byte[] // X0: code, W1: size
{
// void cdecl mono_arch_flush_icache (guint8 *code, gint size)
0xFF, 0xC3, 0x00, 0xD1, // SUB SP, SP, #0x30
0xE8, 0x03, 0x7E, 0xB2, // MOV X8, #4
0xE0, 0x17, 0x00, 0xF9, // STR X0, [SP,#0x30+var_8]
0xE1, 0x27, 0x00, 0xB9, // STR W1, [SP,#0x30+var_C]
0xE0, 0x17, 0x40, 0xF9, // LDR X0, [SP,#0x30+var_8]
0xE9, 0x27, 0x80, 0xB9, // LDRSW X9, [SP,#0x30+var_C]
0x09, 0x00, 0x09, 0x8B, // ADD X9, X0, X9
0xE9, 0x0F, 0x00, 0xF9, // STR X9, [SP,#0x30+var_18]
0xE8, 0x07, 0x00, 0xF9, // STR X8, [SP,#0x30+var_28]
0xE8, 0x03, 0x00, 0xF9, // STR X8, [SP,#0x30+var_30]
0xE8, 0x17, 0x40, 0xF9, // LDR X8, [SP,#0x30+var_8]
0x08, 0xF5, 0x7E, 0x92, // AND X8, X8, #0xFFFFFFFFFFFFFFFC
0xE8, 0x0B, 0x00, 0xF9, // STR X8, [SP,#0x30+var_20]
// loc_590 ; CODE XREF: mono_arch_flush_icache(uchar*, int)+58↓j
0xE8, 0x0B, 0x40, 0xF9, // LDR X8, [SP,#0x30+var_20]
0xE9, 0x0F, 0x40, 0xF9, // LDR X9, [SP,#0x30+var_18]
0x1F, 0x01, 0x09, 0xEB, // CMP X8, X9
0xE2, 0x00, 0x00, 0x54, // B.CS loc_5B8
0xE8, 0x0B, 0x40, 0xF9, // LDR X8, [SP,#0x30+var_20]
0x28, 0x7E, 0x0B, 0xD5, // SYS #3, c7, c14, #1, X8
0xE8, 0x0B, 0x40, 0xF9, // LDR X8, [SP,#0x30+var_20]
0x08, 0x11, 0x00, 0x91, // ADD X8, X8, #4
0xE8, 0x0B, 0x00, 0xF9, // STR X8, [SP,#0x30+var_20]
0xF7, 0xFF, 0xFF, 0x17, // B loc_590
// ; ---------------------------------------------------------------------------
// loc_5B8 ; CODE XREF: mono_arch_flush_icache(uchar *, int)+40↑j
0x9F, 0x3B, 0x03, 0xD5, // DSB ISH
0xE8, 0x17, 0x40, 0xF9, // LDR X8, [SP,#0x30+var_8]
0x08, 0xF5, 0x7E, 0x92, // AND X8, X8, #0xFFFFFFFFFFFFFFFC
0xE8, 0x0B, 0x00, 0xF9, // STR X8, [SP,#0x30+var_20]
// loc_5C8 ; CODE XREF: mono_arch_flush_icache(uchar *, int)+90↓j
0xE8, 0x0B, 0x40, 0xF9, // LDR X8, [SP,#0x30+var_20]
0xE9, 0x0F, 0x40, 0xF9, // LDR X9, [SP,#0x30+var_18]
0x1F, 0x01, 0x09, 0xEB, // CMP X8, X9
0xE2, 0x00, 0x00, 0x54, // B.CS loc_5F0
0xE8, 0x0B, 0x40, 0xF9, // LDR X8, [SP,#0x30+var_20]
0x28, 0x75, 0x0B, 0xD5, // SYS #3, c7, c5, #1, X8
0xE8, 0x0B, 0x40, 0xF9, // LDR X8, [SP,#0x30+var_20]
0x08, 0x11, 0x00, 0x91, // ADD X8, X8, #4
0xE8, 0x0B, 0x00, 0xF9, // STR X8, [SP,#0x30+var_20]
0xF7, 0xFF, 0xFF, 0x17, // B loc_5C8
// ; ---------------------------------------------------------------------------
// loc_5F0 ; CODE XREF: mono_arch_flush_icache(uchar *, int)+78↑j
0x9F, 0x3B, 0x03, 0xD5, // DSB ISH
0xDF, 0x3F, 0x03, 0xD5, // ISB
0xFF, 0xC3, 0x00, 0x91, // ADD SP, SP, #0x30 ; '0'
0xC0, 0x03, 0x5F, 0xD6, // RET
};
#if UNITY_STANDALONE_WIN || UNITY_EDITOR_WIN
[Flags]
public enum Protection
{
PAGE_NOACCESS = 0x01,
PAGE_READONLY = 0x02,
PAGE_READWRITE = 0x04,
PAGE_WRITECOPY = 0x08,
PAGE_EXECUTE = 0x10,
PAGE_EXECUTE_READ = 0x20,
PAGE_EXECUTE_READWRITE = 0x40,
PAGE_EXECUTE_WRITECOPY = 0x80,
PAGE_GUARD = 0x100,
PAGE_NOCACHE = 0x200,
PAGE_WRITECOMBINE = 0x400
}
[DllImport("kernel32")]
public static extern bool VirtualProtect(IntPtr lpAddress, uint dwSize, Protection flNewProtect, out uint lpflOldProtect);
#else
[Flags]
public enum MmapProts : int {
PROT_READ = 0x1,
PROT_WRITE = 0x2,
PROT_EXEC = 0x4,
PROT_NONE = 0x0,
PROT_GROWSDOWN = 0x01000000,
PROT_GROWSUP = 0x02000000,
}
[DllImport("libc", SetLastError = true, CallingConvention = CallingConvention.Cdecl)]
private static extern int mprotect(IntPtr start, IntPtr len, MmapProts prot);
public static unsafe void SetMemPerms(IntPtr start, ulong len, MmapProts prot) {
var requiredAddr = GetPageAlignedAddr(start.ToInt64(), (int)len);
long startPage = requiredAddr.Key;
long endPage = requiredAddr.Value;
if (mprotect((IntPtr) startPage, (IntPtr) (endPage - startPage), prot) != 0)
throw new Exception($"mprotect with prot:{prot} fail!");
}
#endif
}
}
#endif

11
Editor/3rds/UnityHook/HookUtils.cs.meta Normal file
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@ -0,0 +1,11 @@
fileFormatVersion: 2
guid: e84139b42a6164e4c93ce4df1be6dcfb
MonoImporter:
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102
Editor/3rds/UnityHook/HookUtils_OSX.cs Normal file
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#if (UNITY_STANDALONE_OSX || UNITY_EDITOR_OSX)
using System;
using System.Collections.Generic;
using System.Reflection;
using System.Runtime.InteropServices;
using System.Text;
using UnityEngine;
namespace MonoHook
{
public static unsafe class HookUtils
{
static bool jit_write_protect_supported;
private static readonly long _Pagesize;
static HookUtils()
{
jit_write_protect_supported = pthread_jit_write_protect_supported_np() != 0;
PropertyInfo p_SystemPageSize = typeof(Environment).GetProperty("SystemPageSize");
if (p_SystemPageSize == null)
throw new NotSupportedException("Unsupported runtime");
_Pagesize = (int)p_SystemPageSize.GetValue(null, new object[0]);
}
public static void MemCpy(void* pDst, void* pSrc, int len)
{
byte* pDst_ = (byte*)pDst;
byte* pSrc_ = (byte*)pSrc;
for (int i = 0; i < len; i++)
*pDst_++ = *pSrc_++;
}
public static void MemCpy_Jit(void* pDst, byte[] src)
{
fixed(void * p = &src[0])
{
memcpy_jit(new IntPtr(pDst), new IntPtr(p), src.Length);
}
}
/// <summary>
/// set flags of address to `read write execute`
/// </summary>
public static void SetAddrFlagsToRWX(IntPtr ptr, int size) { }
public static void FlushICache(void* code, int size) { }
public static KeyValuePair<long, long> GetPageAlignedAddr(long code, int size)
{
long pagesize = _Pagesize;
long startPage = (code) & ~(pagesize - 1);
long endPage = (code + size + pagesize - 1) & ~(pagesize - 1);
return new KeyValuePair<long, long>(startPage, endPage);
}
const int PRINT_SPLIT = 4;
const int PRINT_COL_SIZE = PRINT_SPLIT * 4;
public static string HexToString(void* ptr, int size, int offset = 0)
{
Func<IntPtr, string> formatAddr = (IntPtr addr__) => IntPtr.Size == 4 ? $"0x{(uint)addr__:x}" : $"0x{(ulong)addr__:x}";
byte* addr = (byte*)ptr;
StringBuilder sb = new StringBuilder(1024);
sb.AppendLine($"addr:{formatAddr(new IntPtr(addr))}");
addr += offset;
size += Math.Abs(offset);
int count = 0;
while (true)
{
sb.Append($"\r\n{formatAddr(new IntPtr(addr + count))}: ");
for (int i = 1; i < PRINT_COL_SIZE + 1; i++)
{
if (count >= size)
goto END;
sb.Append($"{*(addr + count):x2}");
if (i % PRINT_SPLIT == 0)
sb.Append(" ");
count++;
}
}
END:;
return sb.ToString();
}
[DllImport("pthread", SetLastError = true, CallingConvention = CallingConvention.Cdecl)]
private static extern int pthread_jit_write_protect_supported_np();
[DllImport("libMonoHookUtils_OSX", SetLastError = true, CallingConvention = CallingConvention.Cdecl)]
private static extern IntPtr memcpy_jit(IntPtr dst, IntPtr src, int len);
}
}
#endif

11
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5
Data~/ModifiedUnityAssemblies/2021.3.1/UnityEditor.CoreModule-Win.dll.bytes.meta → Editor/3rds/UnityHook/HybridCLRHooks.meta
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@ -1,6 +1,7 @@
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guid: d796fc01daee1964586621890988a5ae
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67
Editor/3rds/UnityHook/HybridCLRHooks/CopyStrippedAOTAssembliesHook.cs Normal file
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using System;
using System.Collections;
using System.Collections.Generic;
using System.Reflection;
using UnityEngine;
using UnityEditor;
using System.Runtime.CompilerServices;
using MonoHook;
using HybridCLR.Editor.BuildProcessors;
using System.IO;
namespace HybridCLR.MonoHook
{
#if UNITY_2021_1_OR_NEWER && UNITY_IOS
[InitializeOnLoad]
public class CopyStrippedAOTAssembliesHook
{
private static MethodHook _hook;
static CopyStrippedAOTAssembliesHook()
{
if (_hook == null)
{
Type type = typeof(UnityEditor.EditorApplication).Assembly.GetType("UnityEditorInternal.AssemblyStripper");
MethodInfo miTarget = type.GetMethod("StripAssembliesTo", BindingFlags.Static | BindingFlags.NonPublic | BindingFlags.Public);
MethodInfo miReplacement = new StripAssembliesDel(OverrideStripAssembliesTo).Method;
MethodInfo miProxy = new StripAssembliesDel(StripAssembliesToProxy).Method;
_hook = new MethodHook(miTarget, miReplacement, miProxy);
_hook.Install();
}
}
private delegate bool StripAssembliesDel(string outputFolder, out string output, out string error, IEnumerable<string> linkXmlFiles, object runInformation);
private static bool OverrideStripAssembliesTo(string outputFolder, out string output, out string error, IEnumerable<string> linkXmlFiles, object runInformation)
{
bool result = StripAssembliesToProxy(outputFolder, out output, out error, linkXmlFiles, runInformation);
if (!result)
{
return false;
}
UnityEngine.Debug.Log($"== StripAssembliesTo outputDir:{outputFolder}");
string outputStrippedDir = HybridCLR.Editor.SettingsUtil.GetAssembliesPostIl2CppStripDir(EditorUserBuildSettings.activeBuildTarget);
Directory.CreateDirectory(outputStrippedDir);
foreach (var aotDll in Directory.GetFiles(outputFolder, "*.dll"))
{
string dstFile = $"{outputStrippedDir}/{Path.GetFileName(aotDll)}";
Debug.Log($"[RunAssemblyStripper] copy aot dll {aotDll} -> {dstFile}");
File.Copy(aotDll, dstFile, true);
}
return result;
}
[MethodImpl(MethodImplOptions.NoOptimization)]
private static bool StripAssembliesToProxy(string outputFolder, out string output, out string error, IEnumerable<string> linkXmlFiles, object runInformation)
{
Debug.LogError("== StripAssembliesToProxy ==");
output = "";
error = "";
return true;
}
}
#endif
}

11
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guid: cf42c4f20b8a1b94baa04a1a5c6b8beb
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serializedVersion: 2
defaultReferences: []
executionOrder: 0
icon: {instanceID: 0}
userData:
assetBundleName:
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903
Editor/3rds/UnityHook/LDasm.cs Normal file
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using System;
using System.Runtime.InteropServices;
namespace DotNetDetour
{
/// <summary>
/// 用于计算汇编指令长度，使用的是BlackBone的LDasm.c中的算法，我把他翻译成C#了
/// </summary>
public unsafe class LDasm
{
const int F_INVALID = 0x01;
const int F_PREFIX = 0x02;
const int F_REX = 0x04;
const int F_MODRM = 0x08;
const int F_SIB = 0x10;
const int F_DISP = 0x20;
const int F_IMM = 0x40;
const int F_RELATIVE = 0x80;
const int OP_NONE = 0x00;
const int OP_INVALID = 0x80;
const int OP_DATA_I8 = 0x01;
const int OP_DATA_I16 = 0x02;
const int OP_DATA_I16_I32 = 0x04;
const int OP_DATA_I16_I32_I64 = 0x08;
const int OP_EXTENDED = 0x10;
const int OP_RELATIVE = 0x20;
const int OP_MODRM = 0x40;
const int OP_PREFIX = 0x80;
struct ldasm_data
{
public byte flags;
public byte rex;
public byte modrm;
public byte sib;
public byte opcd_offset;
public byte opcd_size;
public byte disp_offset;
public byte disp_size;
public byte imm_offset;
public byte imm_size;
}
static byte[] flags_table =
{
/* 00 */ OP_MODRM,
/* 01 */ OP_MODRM,
/* 02 */ OP_MODRM,
/* 03 */ OP_MODRM,
/* 04 */ OP_DATA_I8,
/* 05 */ OP_DATA_I16_I32,
/* 06 */ OP_NONE,
/* 07 */ OP_NONE,
/* 08 */ OP_MODRM,
/* 09 */ OP_MODRM,
/* 0A */ OP_MODRM,
/* 0B */ OP_MODRM,
/* 0C */ OP_DATA_I8,
/* 0D */ OP_DATA_I16_I32,
/* 0E */ OP_NONE,
/* 0F */ OP_NONE,
/* 10 */ OP_MODRM,
/* 11 */ OP_MODRM,
/* 12 */ OP_MODRM,
/* 13 */ OP_MODRM,
/* 14 */ OP_DATA_I8,
/* 15 */ OP_DATA_I16_I32,
/* 16 */ OP_NONE,
/* 17 */ OP_NONE,
/* 18 */ OP_MODRM,
/* 19 */ OP_MODRM,
/* 1A */ OP_MODRM,
/* 1B */ OP_MODRM,
/* 1C */ OP_DATA_I8,
/* 1D */ OP_DATA_I16_I32,
/* 1E */ OP_NONE,
/* 1F */ OP_NONE,
/* 20 */ OP_MODRM,
/* 21 */ OP_MODRM,
/* 22 */ OP_MODRM,
/* 23 */ OP_MODRM,
/* 24 */ OP_DATA_I8,
/* 25 */ OP_DATA_I16_I32,
/* 26 */ OP_PREFIX,
/* 27 */ OP_NONE,
/* 28 */ OP_MODRM,
/* 29 */ OP_MODRM,
/* 2A */ OP_MODRM,
/* 2B */ OP_MODRM,
/* 2C */ OP_DATA_I8,
/* 2D */ OP_DATA_I16_I32,
/* 2E */ OP_PREFIX,
/* 2F */ OP_NONE,
/* 30 */ OP_MODRM,
/* 31 */ OP_MODRM,
/* 32 */ OP_MODRM,
/* 33 */ OP_MODRM,
/* 34 */ OP_DATA_I8,
/* 35 */ OP_DATA_I16_I32,
/* 36 */ OP_PREFIX,
/* 37 */ OP_NONE,
/* 38 */ OP_MODRM,
/* 39 */ OP_MODRM,
/* 3A */ OP_MODRM,
/* 3B */ OP_MODRM,
/* 3C */ OP_DATA_I8,
/* 3D */ OP_DATA_I16_I32,
/* 3E */ OP_PREFIX,
/* 3F */ OP_NONE,
/* 40 */ OP_NONE,
/* 41 */ OP_NONE,
/* 42 */ OP_NONE,
/* 43 */ OP_NONE,
/* 44 */ OP_NONE,
/* 45 */ OP_NONE,
/* 46 */ OP_NONE,
/* 47 */ OP_NONE,
/* 48 */ OP_NONE,
/* 49 */ OP_NONE,
/* 4A */ OP_NONE,
/* 4B */ OP_NONE,
/* 4C */ OP_NONE,
/* 4D */ OP_NONE,
/* 4E */ OP_NONE,
/* 4F */ OP_NONE,
/* 50 */ OP_NONE,
/* 51 */ OP_NONE,
/* 52 */ OP_NONE,
/* 53 */ OP_NONE,
/* 54 */ OP_NONE,
/* 55 */ OP_NONE,
/* 56 */ OP_NONE,
/* 57 */ OP_NONE,
/* 58 */ OP_NONE,
/* 59 */ OP_NONE,
/* 5A */ OP_NONE,
/* 5B */ OP_NONE,
/* 5C */ OP_NONE,
/* 5D */ OP_NONE,
/* 5E */ OP_NONE,
/* 5F */ OP_NONE,
/* 60 */ OP_NONE,
/* 61 */ OP_NONE,
/* 62 */ OP_MODRM,
/* 63 */ OP_MODRM,
/* 64 */ OP_PREFIX,
/* 65 */ OP_PREFIX,
/* 66 */ OP_PREFIX,
/* 67 */ OP_PREFIX,
/* 68 */ OP_DATA_I16_I32,
/* 69 */ OP_MODRM | OP_DATA_I16_I32,
/* 6A */ OP_DATA_I8,
/* 6B */ OP_MODRM | OP_DATA_I8,
/* 6C */ OP_NONE,
/* 6D */ OP_NONE,
/* 6E */ OP_NONE,
/* 6F */ OP_NONE,
/* 70 */ OP_RELATIVE | OP_DATA_I8,
/* 71 */ OP_RELATIVE | OP_DATA_I8,
/* 72 */ OP_RELATIVE | OP_DATA_I8,
/* 73 */ OP_RELATIVE | OP_DATA_I8,
/* 74 */ OP_RELATIVE | OP_DATA_I8,
/* 75 */ OP_RELATIVE | OP_DATA_I8,
/* 76 */ OP_RELATIVE | OP_DATA_I8,
/* 77 */ OP_RELATIVE | OP_DATA_I8,
/* 78 */ OP_RELATIVE | OP_DATA_I8,
/* 79 */ OP_RELATIVE | OP_DATA_I8,
/* 7A */ OP_RELATIVE | OP_DATA_I8,
/* 7B */ OP_RELATIVE | OP_DATA_I8,
/* 7C */ OP_RELATIVE | OP_DATA_I8,
/* 7D */ OP_RELATIVE | OP_DATA_I8,
/* 7E */ OP_RELATIVE | OP_DATA_I8,
/* 7F */ OP_RELATIVE | OP_DATA_I8,
/* 80 */ OP_MODRM | OP_DATA_I8,
/* 81 */ OP_MODRM | OP_DATA_I16_I32,
/* 82 */ OP_MODRM | OP_DATA_I8,
/* 83 */ OP_MODRM | OP_DATA_I8,
/* 84 */ OP_MODRM,
/* 85 */ OP_MODRM,
/* 86 */ OP_MODRM,
/* 87 */ OP_MODRM,
/* 88 */ OP_MODRM,
/* 89 */ OP_MODRM,
/* 8A */ OP_MODRM,
/* 8B */ OP_MODRM,
/* 8C */ OP_MODRM,
/* 8D */ OP_MODRM,
/* 8E */ OP_MODRM,
/* 8F */ OP_MODRM,
/* 90 */ OP_NONE,
/* 91 */ OP_NONE,
/* 92 */ OP_NONE,
/* 93 */ OP_NONE,
/* 94 */ OP_NONE,
/* 95 */ OP_NONE,
/* 96 */ OP_NONE,
/* 97 */ OP_NONE,
/* 98 */ OP_NONE,
/* 99 */ OP_NONE,
/* 9A */ OP_DATA_I16 | OP_DATA_I16_I32,
/* 9B */ OP_NONE,
/* 9C */ OP_NONE,
/* 9D */ OP_NONE,
/* 9E */ OP_NONE,
/* 9F */ OP_NONE,
/* A0 */ OP_DATA_I8,
/* A1 */ OP_DATA_I16_I32_I64,
/* A2 */ OP_DATA_I8,
/* A3 */ OP_DATA_I16_I32_I64,
/* A4 */ OP_NONE,
/* A5 */ OP_NONE,
/* A6 */ OP_NONE,
/* A7 */ OP_NONE,
/* A8 */ OP_DATA_I8,
/* A9 */ OP_DATA_I16_I32,
/* AA */ OP_NONE,
/* AB */ OP_NONE,
/* AC */ OP_NONE,
/* AD */ OP_NONE,
/* AE */ OP_NONE,
/* AF */ OP_NONE,
/* B0 */ OP_DATA_I8,
/* B1 */ OP_DATA_I8,
/* B2 */ OP_DATA_I8,
/* B3 */ OP_DATA_I8,
/* B4 */ OP_DATA_I8,
/* B5 */ OP_DATA_I8,
/* B6 */ OP_DATA_I8,
/* B7 */ OP_DATA_I8,
/* B8 */ OP_DATA_I16_I32_I64,
/* B9 */ OP_DATA_I16_I32_I64,
/* BA */ OP_DATA_I16_I32_I64,
/* BB */ OP_DATA_I16_I32_I64,
/* BC */ OP_DATA_I16_I32_I64,
/* BD */ OP_DATA_I16_I32_I64,
/* BE */ OP_DATA_I16_I32_I64,
/* BF */ OP_DATA_I16_I32_I64,
/* C0 */ OP_MODRM | OP_DATA_I8,
/* C1 */ OP_MODRM | OP_DATA_I8,
/* C2 */ OP_DATA_I16,
/* C3 */ OP_NONE,
/* C4 */ OP_MODRM,
/* C5 */ OP_MODRM,
/* C6 */ OP_MODRM | OP_DATA_I8,
/* C7 */ OP_MODRM | OP_DATA_I16_I32,
/* C8 */ OP_DATA_I8 | OP_DATA_I16,
/* C9 */ OP_NONE,
/* CA */ OP_DATA_I16,
/* CB */ OP_NONE,
/* CC */ OP_NONE,
/* CD */ OP_DATA_I8,
/* CE */ OP_NONE,
/* CF */ OP_NONE,
/* D0 */ OP_MODRM,
/* D1 */ OP_MODRM,
/* D2 */ OP_MODRM,
/* D3 */ OP_MODRM,
/* D4 */ OP_DATA_I8,
/* D5 */ OP_DATA_I8,
/* D6 */ OP_NONE,
/* D7 */ OP_NONE,
/* D8 */ OP_MODRM,
/* D9 */ OP_MODRM,
/* DA */ OP_MODRM,
/* DB */ OP_MODRM,
/* DC */ OP_MODRM,
/* DD */ OP_MODRM,
/* DE */ OP_MODRM,
/* DF */ OP_MODRM,
/* E0 */ OP_RELATIVE | OP_DATA_I8,
/* E1 */ OP_RELATIVE | OP_DATA_I8,
/* E2 */ OP_RELATIVE | OP_DATA_I8,
/* E3 */ OP_RELATIVE | OP_DATA_I8,
/* E4 */ OP_DATA_I8,
/* E5 */ OP_DATA_I8,
/* E6 */ OP_DATA_I8,
/* E7 */ OP_DATA_I8,
/* E8 */ OP_RELATIVE | OP_DATA_I16_I32,
/* E9 */ OP_RELATIVE | OP_DATA_I16_I32,
/* EA */ OP_DATA_I16 | OP_DATA_I16_I32,
/* EB */ OP_RELATIVE | OP_DATA_I8,
/* EC */ OP_NONE,
/* ED */ OP_NONE,
/* EE */ OP_NONE,
/* EF */ OP_NONE,
/* F0 */ OP_PREFIX,
/* F1 */ OP_NONE,
/* F2 */ OP_PREFIX,
/* F3 */ OP_PREFIX,
/* F4 */ OP_NONE,
/* F5 */ OP_NONE,
/* F6 */ OP_MODRM,
/* F7 */ OP_MODRM,
/* F8 */ OP_NONE,
/* F9 */ OP_NONE,
/* FA */ OP_NONE,
/* FB */ OP_NONE,
/* FC */ OP_NONE,
/* FD */ OP_NONE,
/* FE */ OP_MODRM,
/* FF */ OP_MODRM
};
static byte[] flags_table_ex =
{
/* 0F00 */ OP_MODRM,
/* 0F01 */ OP_MODRM,
/* 0F02 */ OP_MODRM,
/* 0F03 */ OP_MODRM,
/* 0F04 */ OP_INVALID,
/* 0F05 */ OP_NONE,
/* 0F06 */ OP_NONE,
/* 0F07 */ OP_NONE,
/* 0F08 */ OP_NONE,
/* 0F09 */ OP_NONE,
/* 0F0A */ OP_INVALID,
/* 0F0B */ OP_NONE,
/* 0F0C */ OP_INVALID,
/* 0F0D */ OP_MODRM,
/* 0F0E */ OP_INVALID,
/* 0F0F */ OP_MODRM | OP_DATA_I8, //3Dnow
/* 0F10 */ OP_MODRM,
/* 0F11 */ OP_MODRM,
/* 0F12 */ OP_MODRM,
/* 0F13 */ OP_MODRM,
/* 0F14 */ OP_MODRM,
/* 0F15 */ OP_MODRM,
/* 0F16 */ OP_MODRM,
/* 0F17 */ OP_MODRM,
/* 0F18 */ OP_MODRM,
/* 0F19 */ OP_INVALID,
/* 0F1A */ OP_INVALID,
/* 0F1B */ OP_INVALID,
/* 0F1C */ OP_INVALID,
/* 0F1D */ OP_INVALID,
/* 0F1E */ OP_INVALID,
/* 0F1F */ OP_NONE,
/* 0F20 */ OP_MODRM,
/* 0F21 */ OP_MODRM,
/* 0F22 */ OP_MODRM,
/* 0F23 */ OP_MODRM,
/* 0F24 */ OP_MODRM | OP_EXTENDED, //SSE5
/* 0F25 */ OP_INVALID,
/* 0F26 */ OP_MODRM,
/* 0F27 */ OP_INVALID,
/* 0F28 */ OP_MODRM,
/* 0F29 */ OP_MODRM,
/* 0F2A */ OP_MODRM,
/* 0F2B */ OP_MODRM,
/* 0F2C */ OP_MODRM,
/* 0F2D */ OP_MODRM,
/* 0F2E */ OP_MODRM,
/* 0F2F */ OP_MODRM,
/* 0F30 */ OP_NONE,
/* 0F31 */ OP_NONE,
/* 0F32 */ OP_NONE,
/* 0F33 */ OP_NONE,
/* 0F34 */ OP_NONE,
/* 0F35 */ OP_NONE,
/* 0F36 */ OP_INVALID,
/* 0F37 */ OP_NONE,
/* 0F38 */ OP_MODRM | OP_EXTENDED,
/* 0F39 */ OP_INVALID,
/* 0F3A */ OP_MODRM | OP_EXTENDED | OP_DATA_I8,
/* 0F3B */ OP_INVALID,
/* 0F3C */ OP_INVALID,
/* 0F3D */ OP_INVALID,
/* 0F3E */ OP_INVALID,
/* 0F3F */ OP_INVALID,
/* 0F40 */ OP_MODRM,
/* 0F41 */ OP_MODRM,
/* 0F42 */ OP_MODRM,
/* 0F43 */ OP_MODRM,
/* 0F44 */ OP_MODRM,
/* 0F45 */ OP_MODRM,
/* 0F46 */ OP_MODRM,
/* 0F47 */ OP_MODRM,
/* 0F48 */ OP_MODRM,
/* 0F49 */ OP_MODRM,
/* 0F4A */ OP_MODRM,
/* 0F4B */ OP_MODRM,
/* 0F4C */ OP_MODRM,
/* 0F4D */ OP_MODRM,
/* 0F4E */ OP_MODRM,
/* 0F4F */ OP_MODRM,
/* 0F50 */ OP_MODRM,
/* 0F51 */ OP_MODRM,
/* 0F52 */ OP_MODRM,
/* 0F53 */ OP_MODRM,
/* 0F54 */ OP_MODRM,
/* 0F55 */ OP_MODRM,
/* 0F56 */ OP_MODRM,
/* 0F57 */ OP_MODRM,
/* 0F58 */ OP_MODRM,
/* 0F59 */ OP_MODRM,
/* 0F5A */ OP_MODRM,
/* 0F5B */ OP_MODRM,
/* 0F5C */ OP_MODRM,
/* 0F5D */ OP_MODRM,
/* 0F5E */ OP_MODRM,
/* 0F5F */ OP_MODRM,
/* 0F60 */ OP_MODRM,
/* 0F61 */ OP_MODRM,
/* 0F62 */ OP_MODRM,
/* 0F63 */ OP_MODRM,
/* 0F64 */ OP_MODRM,
/* 0F65 */ OP_MODRM,
/* 0F66 */ OP_MODRM,
/* 0F67 */ OP_MODRM,
/* 0F68 */ OP_MODRM,
/* 0F69 */ OP_MODRM,
/* 0F6A */ OP_MODRM,
/* 0F6B */ OP_MODRM,
/* 0F6C */ OP_MODRM,
/* 0F6D */ OP_MODRM,
/* 0F6E */ OP_MODRM,
/* 0F6F */ OP_MODRM,
/* 0F70 */ OP_MODRM | OP_DATA_I8,
/* 0F71 */ OP_MODRM | OP_DATA_I8,
/* 0F72 */ OP_MODRM | OP_DATA_I8,
/* 0F73 */ OP_MODRM | OP_DATA_I8,
/* 0F74 */ OP_MODRM,
/* 0F75 */ OP_MODRM,
/* 0F76 */ OP_MODRM,
/* 0F77 */ OP_NONE,
/* 0F78 */ OP_MODRM,
/* 0F79 */ OP_MODRM,
/* 0F7A */ OP_INVALID,
/* 0F7B */ OP_INVALID,
/* 0F7C */ OP_MODRM,
/* 0F7D */ OP_MODRM,
/* 0F7E */ OP_MODRM,
/* 0F7F */ OP_MODRM,
/* 0F80 */ OP_RELATIVE | OP_DATA_I16_I32,
/* 0F81 */ OP_RELATIVE | OP_DATA_I16_I32,
/* 0F82 */ OP_RELATIVE | OP_DATA_I16_I32,
/* 0F83 */ OP_RELATIVE | OP_DATA_I16_I32,
/* 0F84 */ OP_RELATIVE | OP_DATA_I16_I32,
/* 0F85 */ OP_RELATIVE | OP_DATA_I16_I32,
/* 0F86 */ OP_RELATIVE | OP_DATA_I16_I32,
/* 0F87 */ OP_RELATIVE | OP_DATA_I16_I32,
/* 0F88 */ OP_RELATIVE | OP_DATA_I16_I32,
/* 0F89 */ OP_RELATIVE | OP_DATA_I16_I32,
/* 0F8A */ OP_RELATIVE | OP_DATA_I16_I32,
/* 0F8B */ OP_RELATIVE | OP_DATA_I16_I32,
/* 0F8C */ OP_RELATIVE | OP_DATA_I16_I32,
/* 0F8D */ OP_RELATIVE | OP_DATA_I16_I32,
/* 0F8E */ OP_RELATIVE | OP_DATA_I16_I32,
/* 0F8F */ OP_RELATIVE | OP_DATA_I16_I32,
/* 0F90 */ OP_MODRM,
/* 0F91 */ OP_MODRM,
/* 0F92 */ OP_MODRM,
/* 0F93 */ OP_MODRM,
/* 0F94 */ OP_MODRM,
/* 0F95 */ OP_MODRM,
/* 0F96 */ OP_MODRM,
/* 0F97 */ OP_MODRM,
/* 0F98 */ OP_MODRM,
/* 0F99 */ OP_MODRM,
/* 0F9A */ OP_MODRM,
/* 0F9B */ OP_MODRM,
/* 0F9C */ OP_MODRM,
/* 0F9D */ OP_MODRM,
/* 0F9E */ OP_MODRM,
/* 0F9F */ OP_MODRM,
/* 0FA0 */ OP_NONE,
/* 0FA1 */ OP_NONE,
/* 0FA2 */ OP_NONE,
/* 0FA3 */ OP_MODRM,
/* 0FA4 */ OP_MODRM | OP_DATA_I8,
/* 0FA5 */ OP_MODRM,
/* 0FA6 */ OP_INVALID,
/* 0FA7 */ OP_INVALID,
/* 0FA8 */ OP_NONE,
/* 0FA9 */ OP_NONE,
/* 0FAA */ OP_NONE,
/* 0FAB */ OP_MODRM,
/* 0FAC */ OP_MODRM | OP_DATA_I8,
/* 0FAD */ OP_MODRM,
/* 0FAE */ OP_MODRM,
/* 0FAF */ OP_MODRM,
/* 0FB0 */ OP_MODRM,
/* 0FB1 */ OP_MODRM,
/* 0FB2 */ OP_MODRM,
/* 0FB3 */ OP_MODRM,
/* 0FB4 */ OP_MODRM,
/* 0FB5 */ OP_MODRM,
/* 0FB6 */ OP_MODRM,
/* 0FB7 */ OP_MODRM,
/* 0FB8 */ OP_MODRM,
/* 0FB9 */ OP_MODRM,
/* 0FBA */ OP_MODRM | OP_DATA_I8,
/* 0FBB */ OP_MODRM,
/* 0FBC */ OP_MODRM,
/* 0FBD */ OP_MODRM,
/* 0FBE */ OP_MODRM,
/* 0FBF */ OP_MODRM,
/* 0FC0 */ OP_MODRM,
/* 0FC1 */ OP_MODRM,
/* 0FC2 */ OP_MODRM | OP_DATA_I8,
/* 0FC3 */ OP_MODRM,
/* 0FC4 */ OP_MODRM | OP_DATA_I8,
/* 0FC5 */ OP_MODRM | OP_DATA_I8,
/* 0FC6 */ OP_MODRM | OP_DATA_I8,
/* 0FC7 */ OP_MODRM,
/* 0FC8 */ OP_NONE,
/* 0FC9 */ OP_NONE,
/* 0FCA */ OP_NONE,
/* 0FCB */ OP_NONE,
/* 0FCC */ OP_NONE,
/* 0FCD */ OP_NONE,
/* 0FCE */ OP_NONE,
/* 0FCF */ OP_NONE,
/* 0FD0 */ OP_MODRM,
/* 0FD1 */ OP_MODRM,
/* 0FD2 */ OP_MODRM,
/* 0FD3 */ OP_MODRM,
/* 0FD4 */ OP_MODRM,
/* 0FD5 */ OP_MODRM,
/* 0FD6 */ OP_MODRM,
/* 0FD7 */ OP_MODRM,
/* 0FD8 */ OP_MODRM,
/* 0FD9 */ OP_MODRM,
/* 0FDA */ OP_MODRM,
/* 0FDB */ OP_MODRM,
/* 0FDC */ OP_MODRM,
/* 0FDD */ OP_MODRM,
/* 0FDE */ OP_MODRM,
/* 0FDF */ OP_MODRM,
/* 0FE0 */ OP_MODRM,
/* 0FE1 */ OP_MODRM,
/* 0FE2 */ OP_MODRM,
/* 0FE3 */ OP_MODRM,
/* 0FE4 */ OP_MODRM,
/* 0FE5 */ OP_MODRM,
/* 0FE6 */ OP_MODRM,
/* 0FE7 */ OP_MODRM,
/* 0FE8 */ OP_MODRM,
/* 0FE9 */ OP_MODRM,
/* 0FEA */ OP_MODRM,
/* 0FEB */ OP_MODRM,
/* 0FEC */ OP_MODRM,
/* 0FED */ OP_MODRM,
/* 0FEE */ OP_MODRM,
/* 0FEF */ OP_MODRM,
/* 0FF0 */ OP_MODRM,
/* 0FF1 */ OP_MODRM,
/* 0FF2 */ OP_MODRM,
/* 0FF3 */ OP_MODRM,
/* 0FF4 */ OP_MODRM,
/* 0FF5 */ OP_MODRM,
/* 0FF6 */ OP_MODRM,
/* 0FF7 */ OP_MODRM,
/* 0FF8 */ OP_MODRM,
/* 0FF9 */ OP_MODRM,
/* 0FFA */ OP_MODRM,
/* 0FFB */ OP_MODRM,
/* 0FFC */ OP_MODRM,
/* 0FFD */ OP_MODRM,
/* 0FFE */ OP_MODRM,
/* 0FFF */ OP_INVALID,
};
static byte cflags(byte op)
{
return flags_table[op];
}
static byte cflags_ex(byte op)
{
return flags_table_ex[op];
}
/// <summary>
/// 计算大于等于 size 字节的最少指令的长度
/// </summary>
/// <param name="code"></param>
/// <returns></returns>
public static uint SizeofMinNumByte(void* code, int size)
{
if (IsARM())
return (uint)((size + 3) / 4) * 4; // 此为 jit 模式下的长度，不再支持 thumb
uint Length;
byte* pOpcode;
uint Result = 0;
ldasm_data data = new ldasm_data();
bool is64 = IntPtr.Size == 8;
do
{
Length = ldasm(code, data, is64);
pOpcode = (byte*)code + data.opcd_offset;
Result += Length;
if (Result >= size)
break;
if ((Length == 1) && (*pOpcode == 0xCC))
break;
code = (void*)((ulong)code + Length);
} while (Length>0);
return Result;
}
static bool? s_isArm;
public static bool IsARM()
{
if(s_isArm.HasValue)
return s_isArm.Value;
var arch = RuntimeInformation.ProcessArchitecture;
s_isArm = arch == Architecture.Arm || arch == Architecture.Arm64;
return s_isArm.Value;
}
public static bool IsArm32()
{
return IsARM() && IntPtr.Size == 4;
}
public static bool IsArm64()
{
return IsARM() && IntPtr.Size == 8;
}
static bool? s_isiOS;
public static bool IsiOS()
{
if(s_isiOS.HasValue)
return s_isiOS.Value;
s_isiOS = UnityEngine.SystemInfo.operatingSystem.ToLower().Contains("ios");
return s_isiOS.Value;
}
static bool? s_isIL2CPP;
public static bool IsIL2CPP()
{
if (s_isIL2CPP.HasValue)
return s_isIL2CPP.Value;
try
{
byte[] ilBody = typeof(LDasm).GetMethod("IsIL2CPP").GetMethodBody().GetILAsByteArray();
if (ilBody == null || ilBody.Length == 0)
s_isIL2CPP = true;
else
s_isIL2CPP = false;
}
catch
{
s_isIL2CPP = true;
}
return s_isIL2CPP.Value;
}
public static bool IsThumb(IntPtr code)
{
return IsArm32() && ((long)code & 0x1) == 0x1;
}
/// <summary>
/// 计算 thumb 指令长度
/// </summary>
/// <param name="code"></param>
/// <param name="size"></param>
/// <returns></returns>
public static uint CalcARMThumbMinLen(void* code, int size)
{
uint len = 0;
ushort* ins = (ushort*)code;
while (true)
{
if (len >= size)
return len;
if (((*ins >> 13) & 3) == 3)
{
ins += 2;
len += 4;
}
else
{
ins++;
len += 2;
}
}
}
static uint ldasm(void* code, ldasm_data ld, bool is64)
{
byte* p = (byte*)code;
byte s, op, f;
byte rexw, pr_66, pr_67;
s = rexw = pr_66 = pr_67 = 0;
/* dummy check */
if ((int)code==0)
return 0;
/* init output data */
//memset(ld, 0, sizeof(ldasm_data));
/* phase 1: parse prefixies */
while ((cflags(*p) & OP_PREFIX)!=0)
{
if (*p == 0x66)
pr_66 = 1;
if (*p == 0x67)
pr_67 = 1;
p++; s++;
ld.flags |= F_PREFIX;
if (s == 15)
{
ld.flags |= F_INVALID;
return s;
}
}
/* parse REX prefix */
if (is64 && *p >> 4 == 4)
{
ld.rex = *p;
rexw = (byte)((ld.rex >> 3) & 1);
ld.flags |= F_REX;
p++; s++;
}
/* can be only one REX prefix */
if (is64 && *p >> 4 == 4)
{
ld.flags |= F_INVALID;
s++;
return s;
}
/* phase 2: parse opcode */
ld.opcd_offset = (byte)(p - (byte*)code);
ld.opcd_size = 1;
op = *p++; s++;
/* is 2 byte opcode? */
if (op == 0x0F)
{
op = *p++; s++;
ld.opcd_size++;
f = cflags_ex(op);
if ((f & OP_INVALID)!=0)
{
ld.flags |= F_INVALID;
return s;
}
/* for SSE instructions */
if ((f & OP_EXTENDED)!=0)
{
op = *p++; s++;
ld.opcd_size++;
}
}
else {
f = cflags(op);
/* pr_66 = pr_67 for opcodes A0-A3 */
if (op >= 0xA0 && op <= 0xA3)
pr_66 = pr_67;
}
/* phase 3: parse ModR/M, SIB and DISP */
if ((f & OP_MODRM)!=0)
{
byte mod = (byte)(*p >> 6);
byte ro = (byte)((*p & 0x38) >> 3);
byte rm = (byte)(*p & 7);
ld.modrm = *p++; s++;
ld.flags |= F_MODRM;
/* in F6,F7 opcodes immediate data present if R/O == 0 */
if (op == 0xF6 && (ro == 0 || ro == 1))
f |= OP_DATA_I8;
if (op == 0xF7 && (ro == 0 || ro == 1))
f |= OP_DATA_I16_I32_I64;
/* is SIB byte exist? */
if (mod != 3 && rm == 4 && !(!is64 && pr_67!=0))
{
ld.sib = *p++; s++;
ld.flags |= F_SIB;
/* if base == 5 and mod == 0 */
if ((ld.sib & 7) == 5 && mod == 0)
{
ld.disp_size = 4;
}
}
switch (mod)
{
case 0:
if (is64)
{
if (rm == 5)
{
ld.disp_size = 4;
if (is64)
ld.flags |= F_RELATIVE;
}
}
else if (pr_67!=0)
{
if (rm == 6)
ld.disp_size = 2;
}
else {
if (rm == 5)
ld.disp_size = 4;
}
break;
case 1:
ld.disp_size = 1;
break;
case 2:
if (is64)
ld.disp_size = 4;
else if (pr_67!=0)
ld.disp_size = 2;
else
ld.disp_size = 4;
break;
}
if (ld.disp_size>0)
{
ld.disp_offset = (byte)(p - (byte*)code);
p += ld.disp_size;
s += ld.disp_size;
ld.flags |= F_DISP;
}
}
/* phase 4: parse immediate data */
if (rexw!=0 && (f & OP_DATA_I16_I32_I64)!=0)
ld.imm_size = 8;
else if ((f & OP_DATA_I16_I32)!=0 || (f & OP_DATA_I16_I32_I64)!=0)
ld.imm_size = (byte)(4 - (pr_66 << 1));
/* if exist, add OP_DATA_I16 and OP_DATA_I8 size */
ld.imm_size += (byte)(f & 3);
if ((ld.imm_size)!=0)
{
s += ld.imm_size;
ld.imm_offset = (byte)(p - (byte*)code);
ld.flags |= F_IMM;
if ((f & OP_RELATIVE)!=0)
ld.flags |= F_RELATIVE;
}
/* instruction is too long */
if (s > 15)
ld.flags |= F_INVALID;
return s;
}
}
}

11
Editor/3rds/UnityHook/LDasm.cs.meta Normal file
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@ -0,0 +1,11 @@
fileFormatVersion: 2
guid: 3c561c9729c367e4fbef63f4ec56f268
MonoImporter:
externalObjects: {}
serializedVersion: 2
defaultReferences: []
executionOrder: 0
icon: {instanceID: 0}
userData:
assetBundleName:
assetBundleVariant:

381
Editor/3rds/UnityHook/MethodHook.cs Normal file
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@ -0,0 +1,381 @@
/*
Desc: 一个可以运行时 Hook Mono 方法的工具，让你可以无需修改 UnityEditor.dll 等文件就可以重写其函数功能
Author: Misaka Mikoto
Github: https://github.com/Misaka-Mikoto-Tech/MonoHook
*/
using DotNetDetour;
using System;
using System.Diagnostics;
using System.Reflection;
using System.Runtime.InteropServices;
using Unity.Collections.LowLevel.Unsafe;
#if UNITY_EDITOR
using UnityEditor;
#endif
using UnityEngine;
using System.Runtime.CompilerServices;
/*
>>>>>>> 原始 UnityEditor.LogEntries.Clear 一型(.net 4.x)
0000000000403A00 < | 55 | push rbp |
0000000000403A01 | 48 8B EC | mov rbp,rsp |
0000000000403A04 | 48 81 EC 80 00 00 00 | sub rsp,80 |
0000000000403A0B | 48 89 65 B0 | mov qword ptr ss:[rbp-50],rsp |
0000000000403A0F | 48 89 6D A8 | mov qword ptr ss:[rbp-58],rbp |
0000000000403A13 | 48 89 5D C8 | mov qword ptr ss:[rbp-38],rbx | <<
0000000000403A17 | 48 89 75 D0 | mov qword ptr ss:[rbp-30],rsi |
0000000000403A1B | 48 89 7D D8 | mov qword ptr ss:[rbp-28],rdi |
0000000000403A1F | 4C 89 65 E0 | mov qword ptr ss:[rbp-20],r12 |
0000000000403A23 | 4C 89 6D E8 | mov qword ptr ss:[rbp-18],r13 |
0000000000403A27 | 4C 89 75 F0 | mov qword ptr ss:[rbp-10],r14 |
0000000000403A2B | 4C 89 7D F8 | mov qword ptr ss:[rbp-8],r15 |
0000000000403A2F | 49 BB 00 2D 1E 1A FE 7F 00 00 | mov r11,7FFE1A1E2D00 |
0000000000403A39 | 4C 89 5D B8 | mov qword ptr ss:[rbp-48],r11 |
0000000000403A3D | 49 BB 08 2D 1E 1A FE 7F 00 00 | mov r11,7FFE1A1E2D08 |
>>>>>>> 二型(.net 2.x)
0000000000403E8F | 55 | push rbp |
0000000000403E90 | 48 8B EC | mov rbp,rsp |
0000000000403E93 | 48 83 EC 70 | sub rsp,70 |
0000000000403E97 | 48 89 65 C8 | mov qword ptr ss:[rbp-38],rsp |
0000000000403E9B | 48 89 5D B8 | mov qword ptr ss:[rbp-48],rbx |
0000000000403E9F | 48 89 6D C0 | mov qword ptr ss:[rbp-40],rbp | <<(16)
0000000000403EA3 | 48 89 75 F8 | mov qword ptr ss:[rbp-8],rsi |
0000000000403EA7 | 48 89 7D F0 | mov qword ptr ss:[rbp-10],rdi |
0000000000403EAB | 4C 89 65 D0 | mov qword ptr ss:[rbp-30],r12 |
0000000000403EAF | 4C 89 6D D8 | mov qword ptr ss:[rbp-28],r13 |
0000000000403EB3 | 4C 89 75 E0 | mov qword ptr ss:[rbp-20],r14 |
0000000000403EB7 | 4C 89 7D E8 | mov qword ptr ss:[rbp-18],r15 |
0000000000403EBB | 48 83 EC 20 | sub rsp,20 |
0000000000403EBF | 49 BB 18 3F 15 13 FE 7F 00 00 | mov r11,7FFE13153F18 |
0000000000403EC9 | 41 FF D3 | call r11 |
0000000000403ECC | 48 83 C4 20 | add rsp,20 |
>>>>>>>>> arm64
il2cpp:00000000003DE714 F5 0F 1D F8 STR X21, [SP,#-0x10+var_20]! | << absolute safe
il2cpp:00000000003DE718 F4 4F 01 A9 STP X20, X19, [SP,#0x20+var_10] | << may be safe
il2cpp:00000000003DE71C FD 7B 02 A9 STP X29, X30, [SP,#0x20+var_s0] |
il2cpp:00000000003DE720 FD 83 00 91 ADD X29, SP, #0x20 |
il2cpp:00000000003DE724 B5 30 00 B0 ADRP X21, #_ZZ62GameObject_SetActive_mCF1EEF2A314F3AE | << dangerous: relative instruction, can not be overwritten
il2cpp:00000000003DE728 A2 56 47 F9 LDR method, [X21,#_ZZ62GameObject_SetActive_mCF] ; |
il2cpp:00000000003DE72C F3 03 01 2A MOV W19, W1 |
*/
namespace MonoHook
{
/// <summary>
/// Hook 类，用来 Hook 某个 C# 方法
/// </summary>
public unsafe class MethodHook
{
public string tag;
public bool isHooked { get; private set; }
public bool isPlayModeHook { get; private set; }
public MethodBase targetMethod { get; private set; } // 需要被hook的目标方法
public MethodBase replacementMethod { get; private set; } // 被hook后的替代方法
public MethodBase proxyMethod { get; private set; } // 目标方法的代理方法(可以通过此方法调用被hook后的原方法)
private IntPtr _targetPtr; // 目标方法被 jit 后的地址指针
private IntPtr _replacementPtr;
private IntPtr _proxyPtr;
private CodePatcher _codePatcher;
#if UNITY_EDITOR
/// <summary>
/// call `MethodInfo.MethodHandle.GetFunctionPointer()`
/// will visit static class `UnityEditor.IMGUI.Controls.TreeViewGUI.Styles` and invoke its static constructor,
/// and init static filed `foldout`, but `GUISKin.current` is null now,
/// so we should wait until `GUISKin.current` has a valid value
/// </summary>
private static FieldInfo s_fi_GUISkin_current;
#endif
static MethodHook()
{
#if UNITY_EDITOR
s_fi_GUISkin_current = typeof(GUISkin).GetField("current", BindingFlags.Static | BindingFlags.NonPublic);
#endif
}
/// <summary>
/// 创建一个 Hook
/// </summary>
/// <param name="targetMethod">需要替换的目标方法</param>
/// <param name="replacementMethod">准备好的替换方法</param>
/// <param name="proxyMethod">如果还需要调用原始目标方法，可以通过此参数的方法调用，如果不需要可以填 null</param>
public MethodHook(MethodBase targetMethod, MethodBase replacementMethod, MethodBase proxyMethod, string data = "")
{
this.targetMethod = targetMethod;
this.replacementMethod = replacementMethod;
this.proxyMethod = proxyMethod;
this.tag = data;
CheckMethod();
}
public void Install()
{
if (LDasm.IsiOS()) // iOS 不支持修改 code 所在区域 page
return;
if (isHooked)
return;
#if UNITY_EDITOR
if (s_fi_GUISkin_current.GetValue(null) != null)
DoInstall();
else
EditorApplication.update += OnEditorUpdate;
#else
DoInstall();
#endif
isPlayModeHook = Application.isPlaying;
}
public void Uninstall()
{
if (!isHooked)
return;
_codePatcher.RemovePatch();
isHooked = false;
HookPool.RemoveHooker(targetMethod);
}
#region private
private void DoInstall()
{
if (targetMethod == null || replacementMethod == null)
throw new Exception("none of methods targetMethod or replacementMethod can be null");
HookPool.AddHook(targetMethod, this);
if (_codePatcher == null)
{
if (GetFunctionAddr())
{
#if ENABLE_HOOK_DEBUG
UnityEngine.Debug.Log($"Original [{targetMethod.DeclaringType.Name}.{targetMethod.Name}]: {HookUtils.HexToString(_targetPtr.ToPointer(), 64, -16)}");
UnityEngine.Debug.Log($"Original [{replacementMethod.DeclaringType.Name}.{replacementMethod.Name}]: {HookUtils.HexToString(_replacementPtr.ToPointer(), 64, -16)}");
if(proxyMethod != null)
UnityEngine.Debug.Log($"Original [{proxyMethod.DeclaringType.Name}.{proxyMethod.Name}]: {HookUtils.HexToString(_proxyPtr.ToPointer(), 64, -16)}");
#endif
CreateCodePatcher();
_codePatcher.ApplyPatch();
#if ENABLE_HOOK_DEBUG
UnityEngine.Debug.Log($"New [{targetMethod.DeclaringType.Name}.{targetMethod.Name}]: {HookUtils.HexToString(_targetPtr.ToPointer(), 64, -16)}");
UnityEngine.Debug.Log($"New [{replacementMethod.DeclaringType.Name}.{replacementMethod.Name}]: {HookUtils.HexToString(_replacementPtr.ToPointer(), 64, -16)}");
if(proxyMethod != null)
UnityEngine.Debug.Log($"New [{proxyMethod.DeclaringType.Name}.{proxyMethod.Name}]: {HookUtils.HexToString(_proxyPtr.ToPointer(), 64, -16)}");
#endif
}
}
isHooked = true;
}
private void CheckMethod()
{
if (targetMethod == null || replacementMethod == null)
throw new Exception("MethodHook:targetMethod and replacementMethod and proxyMethod can not be null");
string methodName = $"{targetMethod.DeclaringType.Name}.{targetMethod.Name}";
if (targetMethod.IsAbstract)
throw new Exception($"WRANING: you can not hook abstract method [{methodName}]");
#if UNITY_EDITOR
int minMethodBodySize = 10;
{
if ((targetMethod.MethodImplementationFlags & MethodImplAttributes.InternalCall) != MethodImplAttributes.InternalCall)
{
int codeSize = targetMethod.GetMethodBody().GetILAsByteArray().Length; // GetMethodBody can not call on il2cpp
if (codeSize < minMethodBodySize)
UnityEngine.Debug.LogWarning($"WRANING: you can not hook method [{methodName}], cause its method body is too short({codeSize}), will random crash on IL2CPP release mode");
}
}
if(proxyMethod != null)
{
methodName = $"{proxyMethod.DeclaringType.Name}.{proxyMethod.Name}";
int codeSize = proxyMethod.GetMethodBody().GetILAsByteArray().Length;
if (codeSize < minMethodBodySize)
UnityEngine.Debug.LogWarning($"WRANING: size of method body[{methodName}] is too short({codeSize}), will random crash on IL2CPP release mode, please fill some dummy code inside");
if ((proxyMethod.MethodImplementationFlags & MethodImplAttributes.NoOptimization) != MethodImplAttributes.NoOptimization)
throw new Exception($"WRANING: method [{methodName}] must has a Attribute `MethodImpl(MethodImplOptions.NoOptimization)` to prevent code call to this optimized by compiler(pass args by shared stack)");
}
#endif
}
private void CreateCodePatcher()
{
long addrOffset = Math.Abs(_targetPtr.ToInt64() - _proxyPtr.ToInt64());
if(_proxyPtr != IntPtr.Zero)
addrOffset = Math.Max(addrOffset, Math.Abs(_targetPtr.ToInt64() - _proxyPtr.ToInt64()));
if (LDasm.IsARM())
{
if (IntPtr.Size == 8)
_codePatcher = new CodePatcher_arm64_near(_targetPtr, _replacementPtr, _proxyPtr);
else if (addrOffset < ((1 << 25) - 1))
_codePatcher = new CodePatcher_arm32_near(_targetPtr, _replacementPtr, _proxyPtr);
else if (addrOffset < ((1 << 27) - 1))
_codePatcher = new CodePatcher_arm32_far(_targetPtr, _replacementPtr, _proxyPtr);
else
throw new Exception("address of target method and replacement method are too far, can not hook");
}
else
{
if (IntPtr.Size == 8)
{
if(addrOffset < 0x7fffffff) // 2G
_codePatcher = new CodePatcher_x64_near(_targetPtr, _replacementPtr, _proxyPtr);
else
_codePatcher = new CodePatcher_x64_far(_targetPtr, _replacementPtr, _proxyPtr);
}
else
_codePatcher = new CodePatcher_x86(_targetPtr, _replacementPtr, _proxyPtr);
}
}
/// <summary>
/// 获取对应函数jit后的native code的地址
/// </summary>
private bool GetFunctionAddr()
{
_targetPtr = GetFunctionAddr(targetMethod);
_replacementPtr = GetFunctionAddr(replacementMethod);
_proxyPtr = GetFunctionAddr(proxyMethod);
if (_targetPtr == IntPtr.Zero || _replacementPtr == IntPtr.Zero)
return false;
if (proxyMethod != null && _proxyPtr == null)
return false;
if(_replacementPtr == _targetPtr)
{
throw new Exception($"the addresses of target method {targetMethod.Name} and replacement method {replacementMethod.Name} can not be same");
}
if (LDasm.IsThumb(_targetPtr) || LDasm.IsThumb(_replacementPtr))
{
throw new Exception("does not support thumb arch");
}
return true;
}
[StructLayout(LayoutKind.Sequential, Pack = 1)] // 好像在 IL2CPP 里无效
private struct __ForCopy
{
public long __dummy;
public MethodBase method;
}
/// <summary>
/// 获取方法指令地址
/// </summary>
/// <param name="method"></param>
/// <returns></returns>
private IntPtr GetFunctionAddr(MethodBase method)
{
if (method == null)
return IntPtr.Zero;
if (!LDasm.IsIL2CPP())
return method.MethodHandle.GetFunctionPointer();
else
{
/*
// System.Reflection.MonoMethod
typedef struct Il2CppReflectionMethod
{
Il2CppObject object;
const MethodInfo *method;
Il2CppString *name;
Il2CppReflectionType *reftype;
} Il2CppReflectionMethod;
typedef Il2CppClass Il2CppVTable;
typedef struct Il2CppObject
{
union
{
Il2CppClass *klass;
Il2CppVTable *vtable;
};
MonitorData *monitor;
} Il2CppObject;
typedef struct MethodInfo
{
Il2CppMethodPointer methodPointer; // this is the pointer to native code of method
InvokerMethod invoker_method;
const char* name;
Il2CppClass *klass;
const Il2CppType *return_type;
const ParameterInfo* parameters;
// ...
}
*/
__ForCopy __forCopy = new __ForCopy() { method = method };
long* ptr = &__forCopy.__dummy;
ptr++; // addr of _forCopy.method
IntPtr methodAddr = IntPtr.Zero;
if (sizeof(IntPtr) == 8)
{
long methodDataAddr = *(long*)ptr;
byte* ptrData = (byte*)methodDataAddr + sizeof(IntPtr) * 2; // offset of Il2CppReflectionMethod::const MethodInfo *method;
long methodPtr = 0;
methodPtr = *(long*)ptrData;
methodAddr = new IntPtr(*(long*)methodPtr); // MethodInfo::Il2CppMethodPointer methodPointer;
}
else
{
int methodDataAddr = *(int*)ptr;
byte* ptrData = (byte*)methodDataAddr + sizeof(IntPtr) * 2; // offset of Il2CppReflectionMethod::const MethodInfo *method;
int methodPtr = 0;
methodPtr = *(int*)ptrData;
methodAddr = new IntPtr(*(int*)methodPtr);
}
return methodAddr;
}
}
#if UNITY_EDITOR
private void OnEditorUpdate()
{
if (s_fi_GUISkin_current.GetValue(null) != null)
{
try
{
DoInstall();
}
finally
{
EditorApplication.update -= OnEditorUpdate;
}
}
}
#endif
#endregion
}
}

11
Editor/3rds/UnityHook/MethodHook.cs.meta Normal file
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Editor/3rds/UnityHook/Plugins.meta Normal file
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Editor/3rds/UnityHook/Plugins/Utils.cpp Normal file
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//
// Utils.cpp
// MonoHookUtils_OSX
//
// Created by Misaka-Mikoto on 2022/8/31.
//
#include <stdio.h>
#include <stdint.h>
#include <pthread.h>
#include <string.h>
#include <libkern/OSCacheControl.h>
extern "C"{
void* memcpy_jit(void* dst, void* src, int32_t size)
{
pthread_jit_write_protect_np(0);
void* ret = memcpy(dst, src, size);
pthread_jit_write_protect_np(1);
sys_icache_invalidate (dst, size);
return ret;
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}

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4
Editor/Installer/InstallerController.cs
View File

@ -266,10 +266,6 @@ namespace HybridCLR.Editor.Installer
Debug.LogError($"未找到当前版本:{curVersionStr} 对应的改造过的 Unity.IL2CPP.dll，打包出的程序将会崩溃");
}
}
if (version.major >= 2021)
{
Debug.LogError($"如果需要打包iOS，必须手动替换UnityEditor.CoreModule.dll为修改后的版本，否则无法获得AOT dlls。详见 https://focus-creative-games.github.io/hybridclr/modify_unity_dll/#unityeditor-coremodule-dll");
}
if (HasInstalledHybridCLR())
{
Debug.Log("安装成功");

2
package.json
View File

@ -1,6 +1,6 @@
{
"name": "com.focus-creative-games.hybridclr_unity",
"version": "2.0.0",
"version": "2.0.1",
"displayName": "HybridCLR",
"description": "Unity package for HybridCLR. It includes editor and runtime scripts and assets for HybridCLR",
"category": "Runtime",