extern "C" EXCEPTION_DISPOSITION __cdecl _CatchGuardHandler(
EHExceptionRecord *pExcept, // Information for this exception
CatchGuardRN *pRN, // The special marker frame
void *pContext, // Context info (we don't care what's in it)
void * // (ignored)
) {
#if defined(ENABLE_EHTRACE)
EHTracePushLevel(pRN->trace_level);
#endif
EHTRACE_ENTER_FMT1("pRN = 0x%p", pRN);
__asm cld; // Our code-gen assumes this
//
// Validate our registration record, to secure against hacker attacks.
//
__security_check_cookie(pRN->RandomCookie ^ (UINT_PTR)pRN);
EXCEPTION_DISPOSITION result =
__InternalCxxFrameHandler( pExcept,
pRN->pRN,
pContext,
nullptr,
pRN->pFuncInfo,
pRN->CatchDepth,
(EHRegistrationNode*)pRN,
FALSE );
EHTRACE_HANDLER_EXIT(result);
EHTRACE_RESTORE_LEVEL(true);
return result;
}
//
// __CxxFrameHandler - Real entry point to the runtime
//
extern "C" _CRTIMP EXCEPTION_DISPOSITION __CxxFrameHandler(
EHExceptionRecord *pExcept, // Information for this exception
EHRegistrationNode *pFrame, // Dynamic information for this frame
void *pContext, // Context info
DispatcherContext *pDC // More dynamic info for this frame
) {
FuncInfo *pFuncInfo;
EXCEPTION_DISPOSITION result;
PFRAMEINFO pframeinfo;
if (!(IS_UNWINDING(PER_FLAGS(pExcept))) && ((unsigned long)pContext != (unsigned long)GetRTOC()) )
{
// we are calling catch from different CFM, re-initialize our globals
_pFrameInfoChain =(PFRAMEINFO) pDC->pftinfo->pFrameInfo;
_pftinfo->pFrameInfo = pDC->pftinfo->pFrameInfo;
cNested = 0;
pframeinfo = (PFRAMEINFO)_pftinfo->pFrameInfo;
while (pframeinfo)
{
cNested++;
pframeinfo = pframeinfo->pNext;
}
}
pFuncInfo = (FuncInfo*)pDC->FunctionEntry->HandlerData;
result = __InternalCxxFrameHandler( pExcept, pFrame, pContext, pDC, pFuncInfo, 0, NULL, FALSE );
return result;
}
extern "C" DECLSPEC_GUARD_SUPPRESS EXCEPTION_DISPOSITION __cdecl __CxxFrameHandler(
EHExceptionRecord *pExcept, // Information for this exception
EHRegistrationNode RN, // Dynamic information for this frame
CONTEXT *pContext, // Context info
DispatcherContext *pDC // More dynamic info for this frame
) {
FuncInfo *pFuncInfo;
EXCEPTION_DISPOSITION result;
EHRegistrationNode EstablisherFrame = RN;
_ImageBase = pDC->ImageBase;
_ThrowImageBase = (uintptr_t)pExcept->params.pThrowImageBase;
pFuncInfo = (FuncInfo*)(_ImageBase +*(PULONG)pDC->HandlerData);
result = __InternalCxxFrameHandler( pExcept, &EstablisherFrame, pContext, pDC, pFuncInfo, 0, nullptr, FALSE );
return result;
}
//
// __CxxFrameHandler2 - Remove after compiler is updated
//
extern "C" _VCRTIMP __declspec(naked) DECLSPEC_GUARD_SUPPRESS EXCEPTION_DISPOSITION __cdecl __CxxFrameHandler2(
/*
EAX=FuncInfo *pFuncInfo, // Static information for this frame
*/
EHExceptionRecord *pExcept, // Information for this exception
EHRegistrationNode *pRN, // Dynamic information for this frame
void *pContext, // Context info (we don't care what's in it)
DispatcherContext *pDC // More dynamic info for this frame (ignored on Intel)
) {
FuncInfo *pFuncInfo;
EXCEPTION_DISPOSITION result;
__asm {
//
// Standard function prolog
//
push ebp
mov ebp, esp
sub esp, __LOCAL_SIZE
push ebx
push esi
push edi
cld // A bit of paranoia -- Our code-gen assumes this
//
// Save the extra parameter
//
mov pFuncInfo, eax
}
EHTRACE_ENTER_FMT1("pRN = 0x%p", pRN);
result = __InternalCxxFrameHandler( pExcept, pRN, pContext, pDC, pFuncInfo, 0, nullptr, FALSE );
EHTRACE_HANDLER_EXIT(result);
__asm {
pop edi
pop esi
pop ebx
mov eax, result
mov esp, ebp
pop ebp
ret 0
}
}
// Call the SEH to EH translator.
int __cdecl __SehTransFilter(
EXCEPTION_POINTERS *ExPtrs,
EHExceptionRecord *pExcept,
EHRegistrationNode *pRN,
CONTEXT *pContext,
DispatcherContext *pDC,
FuncInfo *pFuncInfo,
BOOL *pResult
) {
_pForeignExcept = pExcept;
_ThrowImageBase = (uintptr_t)((EHExceptionRecord *)ExPtrs->ExceptionRecord)->params.pThrowImageBase;
__InternalCxxFrameHandler( (EHExceptionRecord *)ExPtrs->ExceptionRecord,
pRN,
pContext,
pDC,
pFuncInfo,
0,
nullptr,
TRUE );
_pForeignExcept = nullptr;
*pResult = TRUE;
return EXCEPTION_EXECUTE_HANDLER;
}
