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debug_minidump now uses code from VC++ 8.0 CRT to generate fake exception info.

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/dev/urandom 2016-08-28 16:07:28 +02:00
parent 624173f7cf
commit 1d5927f093
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1 changed files with 55 additions and 17 deletions
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72
src/Components/Modules/Exception.cpp
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@ -197,27 +197,65 @@ namespace Components
#pragma warning(disable:4740) // flow in or out of inline asm code suppresses global optimization
Command::Add("debug_minidump", [](Command::Params)
{
CONTEXT ectx;
ZeroMemory(&ectx, sizeof(CONTEXT));
ectx.ContextFlags = CONTEXT_CONTROL;
// The following code was taken from VC++ 8.0 CRT (invarg.c: line 104)
__asm
{
Label:
mov[ectx.Ebp], ebp;
mov[ectx.Esp], esp;
mov eax, [Label];
mov[ectx.Eip], eax;
EXCEPTION_RECORD ExceptionRecord;
CONTEXT ContextRecord;
memset(&ContextRecord, 0, sizeof(CONTEXT));
#ifdef _X86_
__asm {
mov dword ptr[ContextRecord.Eax], eax
mov dword ptr[ContextRecord.Ecx], ecx
mov dword ptr[ContextRecord.Edx], edx
mov dword ptr[ContextRecord.Ebx], ebx
mov dword ptr[ContextRecord.Esi], esi
mov dword ptr[ContextRecord.Edi], edi
mov word ptr[ContextRecord.SegSs], ss
mov word ptr[ContextRecord.SegCs], cs
mov word ptr[ContextRecord.SegDs], ds
mov word ptr[ContextRecord.SegEs], es
mov word ptr[ContextRecord.SegFs], fs
mov word ptr[ContextRecord.SegGs], gs
pushfd
pop[ContextRecord.EFlags]
}
EXCEPTION_RECORD erec;
ZeroMemory(&erec, sizeof(EXCEPTION_RECORD));
erec.ExceptionAddress = _ReturnAddress();
erec.ExceptionCode = EXCEPTION_BREAKPOINT;
ContextRecord.ContextFlags = CONTEXT_CONTROL;
#pragma warning(push)
#pragma warning(disable:4311)
ContextRecord.Eip = (ULONG)_ReturnAddress();
ContextRecord.Esp = (ULONG)_AddressOfReturnAddress();
#pragma warning(pop)
ContextRecord.Ebp = *((ULONG *)_AddressOfReturnAddress() - 1);
auto eptr = new EXCEPTION_POINTERS();
eptr->ContextRecord = &ectx;
eptr->ExceptionRecord = &erec;
#elif defined (_IA64_) || defined (_AMD64_)
/* Need to fill up the Context in IA64 and AMD64. */
RtlCaptureContext(&ContextRecord);
#else /* defined (_IA64_) || defined (_AMD64_) */
ZeroMemory(&ContextRecord, sizeof(ContextRecord));
#endif /* defined (_IA64_) || defined (_AMD64_) */
ZeroMemory(&ExceptionRecord, sizeof(EXCEPTION_RECORD));
ExceptionRecord.ExceptionCode = EXCEPTION_BREAKPOINT;
ExceptionRecord.ExceptionAddress = _ReturnAddress();
EXCEPTION_RECORD* pExceptionRecord = new EXCEPTION_RECORD;
memcpy(pExceptionRecord, &ExceptionRecord, sizeof(EXCEPTION_RECORD));
CONTEXT* pContextRecord = new CONTEXT;
memcpy(pContextRecord, &ContextRecord, sizeof(CONTEXT));
auto eptr = new EXCEPTION_POINTERS;
eptr->ExceptionRecord = pExceptionRecord;
eptr->ContextRecord = pContextRecord;
Exception::ExceptionFilter(eptr);
});