diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/os/windows/crashlog_win.cpp | 131 |
1 files changed, 129 insertions, 2 deletions
diff --git a/src/os/windows/crashlog_win.cpp b/src/os/windows/crashlog_win.cpp index 11791528b..cdadb27da 100644 --- a/src/os/windows/crashlog_win.cpp +++ b/src/os/windows/crashlog_win.cpp @@ -29,6 +29,16 @@ #include <windows.h> #include <signal.h> +static const uint MAX_SYMBOL_LEN = 512; +static const uint MAX_FRAMES = 64; + +/* printf format specification for 32/64-bit addresses. */ +#ifdef _M_AMD64 +#define PRINTF_PTR "0x%016IX" +#else +#define PRINTF_PTR "0x%08X" +#endif + /** * Windows implementation for the crash logger. */ @@ -44,6 +54,9 @@ class CrashLogWindows : public CrashLog { public: #if defined(_MSC_VER) /* virtual */ int WriteCrashDump(char *filename, const char *filename_last) const; + char *AppendDecodedStacktrace(char *buffer, const char *last) const; +#else + char *AppendDecodedStacktrace(char *buffer, const char *last) const { return buffer; } #endif /* _MSC_VER */ /** Buffer for the generated crash log */ @@ -314,6 +327,119 @@ static char *PrintModuleInfo(char *output, const char *last, HMODULE mod) #if defined(_MSC_VER) #include <dbghelp.h> +char *CrashLogWindows::AppendDecodedStacktrace(char *buffer, const char *last) const +{ +#define M(x) x "\0" + static const char dbg_import[] = + M("dbghelp.dll") + M("SymInitialize") + M("SymSetOptions") + M("SymCleanup") + M("StackWalk64") + M("SymFunctionTableAccess64") + M("SymGetModuleBase64") + M("SymGetModuleInfo64") + M("SymGetSymFromAddr64") + M("SymGetLineFromAddr64") + M("") + ; +#undef M + + struct ProcPtrs { + BOOL (WINAPI * pSymInitialize)(HANDLE, PCSTR, BOOL); + BOOL (WINAPI * pSymSetOptions)(DWORD); + BOOL (WINAPI * pSymCleanup)(HANDLE); + BOOL (WINAPI * pStackWalk64)(DWORD, HANDLE, HANDLE, LPSTACKFRAME64, PVOID, PREAD_PROCESS_MEMORY_ROUTINE64, PFUNCTION_TABLE_ACCESS_ROUTINE64, PGET_MODULE_BASE_ROUTINE64, PTRANSLATE_ADDRESS_ROUTINE64); + PVOID (WINAPI * pSymFunctionTableAccess64)(HANDLE, DWORD64); + DWORD64 (WINAPI * pSymGetModuleBase64)(HANDLE, DWORD64); + BOOL (WINAPI * pSymGetModuleInfo64)(HANDLE, DWORD64, PIMAGEHLP_MODULE64); + BOOL (WINAPI * pSymGetSymFromAddr64)(HANDLE, DWORD64, PDWORD64, PIMAGEHLP_SYMBOL64); + BOOL (WINAPI * pSymGetLineFromAddr64)(HANDLE, DWORD64, PDWORD, PIMAGEHLP_LINE64); + } proc; + + buffer += seprintf(buffer, last, "\nDecoded stack trace:\n"); + + /* Try to load the functions from the DLL, if that fails because of a too old dbghelp.dll, just skip it. */ + if (LoadLibraryList((Function*)&proc, dbg_import)) { + /* Initialize symbol handler. */ + HANDLE hCur = GetCurrentProcess(); + proc.pSymInitialize(hCur, NULL, TRUE); + /* Load symbols only when needed, fail silently on errors, demangle symbol names. */ + proc.pSymSetOptions(SYMOPT_DEFERRED_LOADS | SYMOPT_FAIL_CRITICAL_ERRORS | SYMOPT_UNDNAME); + + /* Initialize starting stack frame from context record. */ + STACKFRAME64 frame; + memset(&frame, 0, sizeof(frame)); +#ifdef _M_AMD64 + frame.AddrPC.Offset = ep->ContextRecord->Rip; + frame.AddrFrame.Offset = ep->ContextRecord->Rbp; + frame.AddrStack.Offset = ep->ContextRecord->Rsp; +#else + frame.AddrPC.Offset = ep->ContextRecord->Eip; + frame.AddrFrame.Offset = ep->ContextRecord->Ebp; + frame.AddrStack.Offset = ep->ContextRecord->Esp; +#endif + frame.AddrPC.Mode = AddrModeFlat; + frame.AddrFrame.Mode = AddrModeFlat; + frame.AddrStack.Mode = AddrModeFlat; + + /* Copy context record as StackWalk64 may modify it. */ + CONTEXT ctx; + memcpy(&ctx, ep->ContextRecord, sizeof(ctx)); + + /* Allocate space for symbol info. */ + IMAGEHLP_SYMBOL64 *sym_info = (IMAGEHLP_SYMBOL64*)alloca(sizeof(IMAGEHLP_SYMBOL64) + MAX_SYMBOL_LEN - 1); + sym_info->SizeOfStruct = sizeof(IMAGEHLP_SYMBOL64); + sym_info->MaxNameLength = MAX_SYMBOL_LEN; + + /* Walk stack at most MAX_FRAMES deep in case the stack is corrupt. */ + for (uint num = 0; num < MAX_FRAMES; num++) { + if (!proc.pStackWalk64( +#ifdef _M_AMD64 + IMAGE_FILE_MACHINE_AMD64, +#else + IMAGE_FILE_MACHINE_I386, +#endif + hCur, GetCurrentThread(), &frame, &ctx, NULL, proc.pSymFunctionTableAccess64, proc.pSymGetModuleBase64, NULL)) break; + + if (frame.AddrPC.Offset == frame.AddrReturn.Offset) { + buffer += seprintf(buffer, last, " <infinite loop>\n"); + break; + } + + /* Get module name. */ + const char *mod_name = "???"; + + IMAGEHLP_MODULE64 module; + module.SizeOfStruct = sizeof(module); + if (proc.pSymGetModuleInfo64(hCur, frame.AddrPC.Offset, &module)) { + mod_name = module.ModuleName; + } + + /* Print module and instruction pointer. */ + buffer += seprintf(buffer, last, "[%02d] %-20s " PRINTF_PTR, num, mod_name, frame.AddrPC.Offset); + + /* Get symbol name and line info if possible. */ + DWORD64 offset; + if (proc.pSymGetSymFromAddr64(hCur, frame.AddrPC.Offset, &offset, sym_info)) { + buffer += seprintf(buffer, last, " %s + %I64u", sym_info->Name, offset); + + DWORD line_offs; + IMAGEHLP_LINE64 line; + line.SizeOfStruct = sizeof(IMAGEHLP_LINE64); + if (proc.pSymGetLineFromAddr64(hCur, frame.AddrPC.Offset, &line_offs, &line)) { + buffer += seprintf(buffer, last, " (%s:%d)", line.FileName, line.LineNumber); + } + } + buffer += seprintf(buffer, last, "\n"); + } + + proc.pSymCleanup(hCur); + } + + return buffer + seprintf(buffer, last, "\n*** End of additional info ***\n"); +} + /* virtual */ int CrashLogWindows::WriteCrashDump(char *filename, const char *filename_last) const { int ret = 0; @@ -391,9 +517,10 @@ static LONG WINAPI ExceptionHandler(EXCEPTION_POINTERS *ep) CrashLogWindows *log = new CrashLogWindows(ep); CrashLogWindows::current = log; - log->FillCrashLog(log->crashlog, lastof(log->crashlog)); - log->WriteCrashLog(log->crashlog, log->crashlog_filename, lastof(log->crashlog_filename)); + char *buf = log->FillCrashLog(log->crashlog, lastof(log->crashlog)); log->WriteCrashDump(log->crashdump_filename, lastof(log->crashdump_filename)); + log->AppendDecodedStacktrace(buf, lastof(log->crashlog)); + log->WriteCrashLog(log->crashlog, log->crashlog_filename, lastof(log->crashlog_filename)); log->WriteScreenshot(log->screenshot_filename, lastof(log->screenshot_filename)); /* Close any possible log files */ |