Files
bb107-MemoryModulePP/a/unhandled_exception.cpp
2023-03-18 21:50:04 +08:00

50 lines
1.0 KiB
C++

#include <Windows.h>
#include <cstdio>
#ifdef _WIN64
DWORD Value;
volatile LPDWORD lpAddr;
LONG WINAPI Filter(_In_ struct _EXCEPTION_POINTERS* ExceptionInfo) {
if (ExceptionInfo->ExceptionRecord->ExceptionCode == STATUS_ACCESS_VIOLATION) {
lpAddr = &Value;
// +++++++
// begin compiler specific
// +++++++
//ExceptionInfo->ContextRecord->Rip -= 7;
ExceptionInfo->ContextRecord->Rax = (ULONG_PTR)lpAddr;
// +++++++
// end compiler specific
// +++++++
return EXCEPTION_CONTINUE_EXECUTION;
}
return EXCEPTION_CONTINUE_SEARCH;
}
#endif
int unhandled_exception() {
#ifdef _WIN64
auto filter = SetUnhandledExceptionFilter(Filter);
auto ff = SetUnhandledExceptionFilter(filter);
if (ff != Filter) {
printf("%p\t%p\t%p\nfailed\n", filter, ff, Filter);
return 0;
}
filter = SetUnhandledExceptionFilter(Filter);
lpAddr = nullptr;
*lpAddr = 1;
SetUnhandledExceptionFilter(filter);
#endif
return 1234;
}