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sdlprocdump: ignore C++ exceptions

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This commit is contained in:
Anonymous Maarten 2024-07-08 19:36:38 +02:00
parent d6c8485f28
commit c4cbbca185
1 changed files with 65 additions and 14 deletions
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79
test/win32/sdlprocdump.c
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@ -145,6 +145,7 @@ static void unload_dbghelp(void) {
static const char *exceptionCode_to_string(DWORD dwCode) {
#define SWITCH_CODE_STR(V) case V: return #V;
switch (dwCode) {
case 0xe06d7363: return "MS Visual C++ Exception";
FOREACH_EXCEPTION_CODES(SWITCH_CODE_STR)
default: {
return "unknown";
@ -153,7 +154,12 @@ static const char *exceptionCode_to_string(DWORD dwCode) {
#undef SWITCH_CODE_STR
}
static int IsFatalExceptionCode(DWORD dwCode) {
static BOOL IsCXXException(DWORD dwCode) {
/* https://devblogs.microsoft.com/oldnewthing/20100730-00/?p=13273 */
return dwCode == 0xe06d7363; /* FOURCC(0xe0, 'm', 's', 'c') */
}
static BOOL IsFatalExceptionCode(DWORD dwCode) {
switch (dwCode) {
case EXCEPTION_ACCESS_VIOLATION:
case EXCEPTION_ARRAY_BOUNDS_EXCEEDED:
@ -165,9 +171,9 @@ static int IsFatalExceptionCode(DWORD dwCode) {
case STATUS_STACK_BUFFER_OVERRUN:
case EXCEPTION_GUARD_PAGE:
case EXCEPTION_INVALID_HANDLE:
return 1;
return TRUE;
default:
return 0;
return FALSE;
}
}
@ -392,6 +398,46 @@ static PCONTEXT FillInThreadContext(LPPROCESS_INFORMATION process_information, P
return context_buffer;
}
static void GetMSCExceptionName(HANDLE hProcess, ULONG_PTR *parameters, DWORD count_parameters, char *buffer, size_t buffer_size) {
#define FIXUP_DWORD_POINTER(ADDR) ((sizeof(void *) == 8) ? (parameters[3] + (ADDR)) : (ADDR))
#define CHECKED_ReadProcessMemory(PROCESS, ADDRESS, BUFFER, COUNT, WHAT) \
do { \
SIZE_T actual_count; \
BOOL res = ReadProcessMemory((PROCESS), (ADDRESS), (BUFFER), (COUNT), &actual_count); \
if (!res) { \
printf_windows_message(WHAT ": ReadProcessMemory failed"); \
strncpy_s(buffer, buffer_size, "<error>", buffer_size); \
return; \
} \
if ((COUNT) != (actual_count)) { \
printf_message(WHAT ": ReadProcessMemory did not read enough data actual=%lu expected=%lu", \
(unsigned long) (actual_count), (unsigned long) (COUNT)); \
strncpy_s(buffer, buffer_size, "<error>", buffer_size); \
return; \
} \
} while (0)
DWORD depth0;
char *ptr_depth0;
DWORD depth1;
char *ptr_depth1;
DWORD depth2;
char *ptr_depth2;
CHECKED_ReadProcessMemory(hProcess, (void *)(parameters[2] + 3 * sizeof(DWORD)), &depth0, sizeof(depth0), "depth 0");
ptr_depth0 = (char *)FIXUP_DWORD_POINTER(depth0);
CHECKED_ReadProcessMemory(hProcess, ptr_depth0 + 1 * sizeof(DWORD), &depth1, sizeof(depth1), "depth 1");
ptr_depth1 = (char *)FIXUP_DWORD_POINTER(depth1);
CHECKED_ReadProcessMemory(hProcess, ptr_depth1 + 1 * sizeof(DWORD), &depth2, sizeof(depth2), "depth 2");
ptr_depth2 = (char *)FIXUP_DWORD_POINTER(depth2);
CHECKED_ReadProcessMemory(hProcess, ptr_depth2 + 2 * sizeof(void*), buffer, buffer_size, "data");
buffer[buffer_size - 1] = '\0';
#undef FIXUP_DWORD_POINTER
#undef CHECKED_ReadProcessMemory
}
int main(int argc, char *argv[]) {
int i;
size_t command_line_len = 0;
@ -409,7 +455,7 @@ int main(int argc, char *argv[]) {
}
for (i = 1; i < argc; i++) {
command_line_len += strlen(argv[1]) + 1;
command_line_len += strlen(argv[i]) + 1;
}
command_line = malloc(command_line_len + 1);
if (!command_line) {
@ -463,20 +509,25 @@ int main(int argc, char *argv[]) {
}
switch (event.dwDebugEventCode) {
case EXCEPTION_DEBUG_EVENT:
if (IsFatalExceptionCode(event.u.Exception.ExceptionRecord.ExceptionCode) || (event.u.Exception.ExceptionRecord.ExceptionFlags & EXCEPTION_NONCONTINUABLE)) {
printf_message("EXCEPTION_DEBUG_EVENT");
printf_message(" ExceptionCode: 0x%08lx (%s)",
event.u.Exception.ExceptionRecord.ExceptionCode,
exceptionCode_to_string(event.u.Exception.ExceptionRecord.ExceptionCode));
printf_message(" ExceptionFlags: 0x%08lx",
event.u.Exception.ExceptionRecord.ExceptionFlags);
printf_message(" FirstChance: %ld", event.u.Exception.dwFirstChance);
printf_message(" ExceptionAddress: 0x%08lx",
event.u.Exception.ExceptionRecord.ExceptionAddress);
if (IsCXXException(event.u.Exception.ExceptionRecord.ExceptionCode)) {
char exception_name[256];
GetMSCExceptionName(process_information.hProcess, event.u.Exception.ExceptionRecord.ExceptionInformation, event.u.Exception.ExceptionRecord.NumberParameters,
exception_name, sizeof(exception_name));
printf_message(" Exception name: %s", exception_name);
} else if (IsFatalExceptionCode(event.u.Exception.ExceptionRecord.ExceptionCode) || (event.u.Exception.ExceptionRecord.ExceptionFlags & EXCEPTION_NONCONTINUABLE)) {
CONTEXT context_buffer;
PCONTEXT context;
printf_message("EXCEPTION_DEBUG_EVENT");
printf_message(" ExceptionCode: 0x%08lx (%s)",
event.u.Exception.ExceptionRecord.ExceptionCode,
exceptionCode_to_string(event.u.Exception.ExceptionRecord.ExceptionCode));
printf_message(" ExceptionFlags: 0x%08lx",
event.u.Exception.ExceptionRecord.ExceptionFlags);
printf_message(" ExceptionAddress: 0x%08lx",
event.u.Exception.ExceptionRecord.ExceptionAddress);
printf_message(" (Non-continuable exception debug event)");
context = FillInThreadContext(&process_information, &context_buffer);
write_minidump(argv[1], &process_information, event.dwThreadId, &event.u.Exception.ExceptionRecord, context);
printf_message("");