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Added launching of a debugger when unhandled exception occurs.
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@ -72,8 +72,12 @@ void WINAPI RaiseException( DWORD code, DWORD flags, DWORD nbargs, const LPDWORD
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DWORD WINAPI UnhandledExceptionFilter(PEXCEPTION_POINTERS epointers)
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{
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struct exception_event_request *req = get_req_buffer();
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char message[80];
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PDB *pdb = PROCESS_Current();
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PDB* pdb = PROCESS_Current();
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char format[256];
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char buffer[256];
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HKEY hDbgConf;
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DWORD bAuto;
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DWORD ret = EXCEPTION_EXECUTE_HANDLER;
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/* send a last chance event to the debugger */
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req->record = *epointers->ExceptionRecord;
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@ -90,11 +94,61 @@ DWORD WINAPI UnhandledExceptionFilter(PEXCEPTION_POINTERS epointers)
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/* FIXME: Should check the current error mode */
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sprintf( message, "Unhandled exception 0x%08lx at address 0x%08lx.",
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epointers->ExceptionRecord->ExceptionCode,
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(DWORD)epointers->ExceptionRecord->ExceptionAddress );
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Callout.MessageBoxA( 0, message, "Error", MB_OK | MB_ICONHAND );
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return EXCEPTION_EXECUTE_HANDLER;
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if (!RegOpenKeyA(HKEY_LOCAL_MACHINE,
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"Software\\Microsoft\\Windows NT\\CurrentVersion\\AeDebug",
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&hDbgConf)) {
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DWORD type;
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DWORD count;
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count = sizeof(format);
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if (RegQueryValueExA(hDbgConf, "Debugger", 0, &type, format, &count))
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format[0] = 0;
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count = sizeof(bAuto);
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if (RegQueryValueExA(hDbgConf, "Auto", 0, &type, (char*)&bAuto, &count))
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bAuto = FALSE;
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RegCloseKey(hDbgConf);
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} else {
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format[0] = 0;
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}
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if (!bAuto) {
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sprintf( buffer, "Unhandled exception 0x%08lx at address 0x%08lx.\n"
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"Do you wish to debug it ?",
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epointers->ExceptionRecord->ExceptionCode,
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(DWORD)epointers->ExceptionRecord->ExceptionAddress );
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if (Callout.MessageBoxA( 0, buffer, "Error", MB_YESNO | MB_ICONHAND ) == IDNO) {
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TRACE("Killing process\n");
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return EXCEPTION_EXECUTE_HANDLER;
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}
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}
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if (format[0]) {
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HANDLE hEvent;
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PROCESS_INFORMATION info;
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STARTUPINFOA startup;
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TRACE("Starting debugger (fmt=%s)\n", format);
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hEvent = ConvertToGlobalHandle(CreateEventA(NULL, FALSE, FALSE, NULL));
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sprintf(buffer, format, (unsigned long)pdb->server_pid, hEvent);
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memset(&startup, 0, sizeof(startup));
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startup.cb = sizeof(startup);
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startup.dwFlags = STARTF_USESHOWWINDOW;
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startup.wShowWindow = SW_SHOWNORMAL;
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if (CreateProcessA(NULL, buffer, NULL, NULL,
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TRUE, 0, NULL, NULL, &startup, &info)) {
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WaitForSingleObject(hEvent, INFINITE);
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ret = EXCEPTION_CONTINUE_SEARCH;
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} else {
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ERR("Couldn't start debugger (%s)\n", buffer);
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}
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CloseHandle(hEvent);
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} else {
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ERR("No standard debugger defined in the registry => no debugging session\n");
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}
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return ret;
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}
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@ -57,6 +57,15 @@
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[HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion]
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"ProgramFilesDir"="C:\Program Files"
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#
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# Configuration for unhandled exceptions
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#
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[MACHINE\Software\Microsoft\Windows NT\CurrentVersionAeDebug]
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# command line to start a debugger when an exception occurs
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"Debugger"="debugger/winedbg %ld %ld"
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# to 1 if no message box has to be presented before running the debugger
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"Auto"=dword:00000000
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#
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# This identifies the files for available code pages
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#
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