mirror of
https://github.com/Chuyu-Team/VC-LTL5.git
synced 2026-10-18 22:00:51 +08:00
mingkuang
133 lines
3.2 KiB
C++
133 lines
3.2 KiB
C++
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#include <corecrt.h>
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#include <internal_shared.h>
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#include <ehdata.h>
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#include <float.h>
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#include <mbstring.h>
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#include <locale.h>
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#include <corecrt_io.h>
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#include <corecrt_wio.h>
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#include <corecrt_wtime.h>
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#include <time.h>
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#include <intrin.h>
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#include <stdio.h>
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#include <conio.h>
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#if WindowsTargetPlatformMinVersion < WindowsTargetPlatformWindows6
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#if defined _X86_
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extern "C" __declspec(dllimport) EXCEPTION_DISPOSITION __CxxFrameHandler(
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EHExceptionRecord *pExcept,
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EHRegistrationNode *pRN,
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void *pContext,
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DispatcherContext *pDC
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);
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extern "C" __declspec(naked) DECLSPEC_GUARD_SUPPRESS EXCEPTION_DISPOSITION __cdecl __CxxFrameHandler3(
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/*
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EAX=FuncInfo *pFuncInfo, // Static information for this frame
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*/
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EHExceptionRecord *pExcept, // Information for this exception
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EHRegistrationNode *pRN, // Dynamic information for this frame
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void *pContext, // Context info (we don't care what's in it)
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DispatcherContext *pDC // More dynamic info for this frame (ignored on Intel)
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)
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{
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//FuncInfo *pFuncInfo;
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_s_FuncInfo FuncInfo_downlevel;
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__asm
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{
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//
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// Standard function prolog
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//
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push ebp
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mov ebp, esp
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sub esp, 0x24
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push ebx
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push esi
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push edi
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cld // A bit of paranoia -- Our code-gen assumes this
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//
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// Save the extra parameter
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//
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mov esi, eax
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mov ecx, 9
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lea eax, FuncInfo_downlevel
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mov edi, eax
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rep movsd
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//FuncInfo_downlevel.magicNumber = EH_MAGIC_NUMBER1;
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mov edx, dword ptr[eax]
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and edx, 0F9930520h
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or edx, 19930520h
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mov dword ptr[eax], edx
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//__CxxFrameHandler(eax, pExcept, pRN, pContext, pDC);
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push dword ptr[pDC]
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push dword ptr[pContext]
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push dword ptr[pRN]
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push dword ptr[pExcept]
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//eax
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call __CxxFrameHandler
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add esp, 10h
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pop edi
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pop esi
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pop ebx
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mov esp, ebp
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pop ebp
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retn
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}
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}
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#elif defined _AMD64_
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extern "C" __declspec(dllimport) EXCEPTION_DISPOSITION __CxxFrameHandler(
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EHExceptionRecord *pExcept,
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EHRegistrationNode RN,
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CONTEXT *pContext,
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DispatcherContext *pDC
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);
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static volatile long ProtectFlag = 0;
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extern "C" DECLSPEC_GUARD_SUPPRESS EXCEPTION_DISPOSITION __cdecl __CxxFrameHandler3(
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EHExceptionRecord *pExcept, // Information for this exception
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EHRegistrationNode RN, // Dynamic information for this frame
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CONTEXT *pContext, // Context info
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DispatcherContext *pDC // More dynamic info for this frame
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)
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{
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auto pFuncInfo = (_s_FuncInfo*)(pDC->ImageBase + *(DWORD*)pDC->HandlerData);
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if (pExcept->ExceptionCode == EH_EXCEPTION_NUMBER && pFuncInfo->magicNumber <= EH_MAGIC_NUMBER3 && pFuncInfo->magicNumber > EH_MAGIC_NUMBER1)
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{
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while (InterlockedExchange(&ProtectFlag, 1) == 1)
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{
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Sleep(10);
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}
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DWORD OldProtect;
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//开启修改magicNumber
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if (VirtualProtect(pFuncInfo, 4, PAGE_EXECUTE_READWRITE, &OldProtect))
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{
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pFuncInfo->magicNumber = EH_MAGIC_NUMBER1;
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VirtualProtect(pFuncInfo, 4, OldProtect, &OldProtect);
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}
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InterlockedExchange(&ProtectFlag, 0);
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}
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return __CxxFrameHandler(pExcept, RN, pContext, pDC);
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}
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#endif
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_LCRT_DEFINE_IAT_SYMBOL(__CxxFrameHandler3);
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#endif |