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1 // Copyright 2012 the V8 project authors. All rights reserved. | 1 // Copyright 2012 the V8 project authors. All rights reserved. |
2 // Redistribution and use in source and binary forms, with or without | 2 // Redistribution and use in source and binary forms, with or without |
3 // modification, are permitted provided that the following conditions are | 3 // modification, are permitted provided that the following conditions are |
4 // met: | 4 // met: |
5 // | 5 // |
6 // * Redistributions of source code must retain the above copyright | 6 // * Redistributions of source code must retain the above copyright |
7 // notice, this list of conditions and the following disclaimer. | 7 // notice, this list of conditions and the following disclaimer. |
8 // * Redistributions in binary form must reproduce the above | 8 // * Redistributions in binary form must reproduce the above |
9 // copyright notice, this list of conditions and the following | 9 // copyright notice, this list of conditions and the following |
10 // disclaimer in the documentation and/or other materials provided | 10 // disclaimer in the documentation and/or other materials provided |
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1201 if (!LoadDbgHelpAndTlHelp32()) return; | 1201 if (!LoadDbgHelpAndTlHelp32()) return; |
1202 HANDLE process_handle = GetCurrentProcess(); | 1202 HANDLE process_handle = GetCurrentProcess(); |
1203 LoadSymbols(isolate, process_handle); | 1203 LoadSymbols(isolate, process_handle); |
1204 } | 1204 } |
1205 | 1205 |
1206 | 1206 |
1207 void OS::SignalCodeMovingGC() { | 1207 void OS::SignalCodeMovingGC() { |
1208 } | 1208 } |
1209 | 1209 |
1210 | 1210 |
| 1211 // Walk the stack using the facilities in dbghelp.dll and tlhelp32.dll |
| 1212 |
| 1213 // Switch off warning 4748 (/GS can not protect parameters and local variables |
| 1214 // from local buffer overrun because optimizations are disabled in function) as |
| 1215 // it is triggered by the use of inline assembler. |
| 1216 #pragma warning(push) |
| 1217 #pragma warning(disable : 4748) |
| 1218 int OS::StackWalk(Vector<OS::StackFrame> frames) { |
| 1219 BOOL ok; |
| 1220 |
| 1221 // Load the required functions from DLL's. |
| 1222 if (!LoadDbgHelpAndTlHelp32()) return kStackWalkError; |
| 1223 |
| 1224 // Get the process and thread handles. |
| 1225 HANDLE process_handle = GetCurrentProcess(); |
| 1226 HANDLE thread_handle = GetCurrentThread(); |
| 1227 |
| 1228 // Read the symbols. |
| 1229 if (!LoadSymbols(Isolate::Current(), process_handle)) return kStackWalkError; |
| 1230 |
| 1231 // Capture current context. |
| 1232 CONTEXT context; |
| 1233 RtlCaptureContext(&context); |
| 1234 |
| 1235 // Initialize the stack walking |
| 1236 STACKFRAME64 stack_frame; |
| 1237 memset(&stack_frame, 0, sizeof(stack_frame)); |
| 1238 #ifdef _WIN64 |
| 1239 stack_frame.AddrPC.Offset = context.Rip; |
| 1240 stack_frame.AddrFrame.Offset = context.Rbp; |
| 1241 stack_frame.AddrStack.Offset = context.Rsp; |
| 1242 #else |
| 1243 stack_frame.AddrPC.Offset = context.Eip; |
| 1244 stack_frame.AddrFrame.Offset = context.Ebp; |
| 1245 stack_frame.AddrStack.Offset = context.Esp; |
| 1246 #endif |
| 1247 stack_frame.AddrPC.Mode = AddrModeFlat; |
| 1248 stack_frame.AddrFrame.Mode = AddrModeFlat; |
| 1249 stack_frame.AddrStack.Mode = AddrModeFlat; |
| 1250 int frames_count = 0; |
| 1251 |
| 1252 // Collect stack frames. |
| 1253 int frames_size = frames.length(); |
| 1254 while (frames_count < frames_size) { |
| 1255 ok = _StackWalk64( |
| 1256 IMAGE_FILE_MACHINE_I386, // MachineType |
| 1257 process_handle, // hProcess |
| 1258 thread_handle, // hThread |
| 1259 &stack_frame, // StackFrame |
| 1260 &context, // ContextRecord |
| 1261 NULL, // ReadMemoryRoutine |
| 1262 _SymFunctionTableAccess64, // FunctionTableAccessRoutine |
| 1263 _SymGetModuleBase64, // GetModuleBaseRoutine |
| 1264 NULL); // TranslateAddress |
| 1265 if (!ok) break; |
| 1266 |
| 1267 // Store the address. |
| 1268 ASSERT((stack_frame.AddrPC.Offset >> 32) == 0); // 32-bit address. |
| 1269 frames[frames_count].address = |
| 1270 reinterpret_cast<void*>(stack_frame.AddrPC.Offset); |
| 1271 |
| 1272 // Try to locate a symbol for this frame. |
| 1273 DWORD64 symbol_displacement; |
| 1274 SmartArrayPointer<IMAGEHLP_SYMBOL64> symbol( |
| 1275 NewArray<IMAGEHLP_SYMBOL64>(kStackWalkMaxNameLen)); |
| 1276 if (symbol.is_empty()) return kStackWalkError; // Out of memory. |
| 1277 memset(*symbol, 0, sizeof(IMAGEHLP_SYMBOL64) + kStackWalkMaxNameLen); |
| 1278 (*symbol)->SizeOfStruct = sizeof(IMAGEHLP_SYMBOL64); |
| 1279 (*symbol)->MaxNameLength = kStackWalkMaxNameLen; |
| 1280 ok = _SymGetSymFromAddr64(process_handle, // hProcess |
| 1281 stack_frame.AddrPC.Offset, // Address |
| 1282 &symbol_displacement, // Displacement |
| 1283 *symbol); // Symbol |
| 1284 if (ok) { |
| 1285 // Try to locate more source information for the symbol. |
| 1286 IMAGEHLP_LINE64 Line; |
| 1287 memset(&Line, 0, sizeof(Line)); |
| 1288 Line.SizeOfStruct = sizeof(Line); |
| 1289 DWORD line_displacement; |
| 1290 ok = _SymGetLineFromAddr64( |
| 1291 process_handle, // hProcess |
| 1292 stack_frame.AddrPC.Offset, // dwAddr |
| 1293 &line_displacement, // pdwDisplacement |
| 1294 &Line); // Line |
| 1295 // Format a text representation of the frame based on the information |
| 1296 // available. |
| 1297 if (ok) { |
| 1298 SNPrintF(MutableCStrVector(frames[frames_count].text, |
| 1299 kStackWalkMaxTextLen), |
| 1300 "%s %s:%d:%d", |
| 1301 (*symbol)->Name, Line.FileName, Line.LineNumber, |
| 1302 line_displacement); |
| 1303 } else { |
| 1304 SNPrintF(MutableCStrVector(frames[frames_count].text, |
| 1305 kStackWalkMaxTextLen), |
| 1306 "%s", |
| 1307 (*symbol)->Name); |
| 1308 } |
| 1309 // Make sure line termination is in place. |
| 1310 frames[frames_count].text[kStackWalkMaxTextLen - 1] = '\0'; |
| 1311 } else { |
| 1312 // No text representation of this frame |
| 1313 frames[frames_count].text[0] = '\0'; |
| 1314 |
| 1315 // Continue if we are just missing a module (for non C/C++ frames a |
| 1316 // module will never be found). |
| 1317 int err = GetLastError(); |
| 1318 if (err != ERROR_MOD_NOT_FOUND) { |
| 1319 break; |
| 1320 } |
| 1321 } |
| 1322 |
| 1323 frames_count++; |
| 1324 } |
| 1325 |
| 1326 // Return the number of frames filled in. |
| 1327 return frames_count; |
| 1328 } |
| 1329 |
| 1330 |
| 1331 // Restore warnings to previous settings. |
| 1332 #pragma warning(pop) |
| 1333 |
1211 #else // __MINGW32__ | 1334 #else // __MINGW32__ |
1212 void OS::LogSharedLibraryAddresses(Isolate* isolate) { } | 1335 void OS::LogSharedLibraryAddresses(Isolate* isolate) { } |
1213 void OS::SignalCodeMovingGC() { } | 1336 void OS::SignalCodeMovingGC() { } |
| 1337 int OS::StackWalk(Vector<OS::StackFrame> frames) { return 0; } |
1214 #endif // __MINGW32__ | 1338 #endif // __MINGW32__ |
1215 | 1339 |
1216 | 1340 |
1217 uint64_t OS::CpuFeaturesImpliedByPlatform() { | 1341 uint64_t OS::CpuFeaturesImpliedByPlatform() { |
1218 return 0; // Windows runs on anything. | 1342 return 0; // Windows runs on anything. |
1219 } | 1343 } |
1220 | 1344 |
1221 | 1345 |
1222 double OS::nan_value() { | 1346 double OS::nan_value() { |
1223 #ifdef _MSC_VER | 1347 #ifdef _MSC_VER |
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1445 ASSERT(result); | 1569 ASSERT(result); |
1446 } | 1570 } |
1447 | 1571 |
1448 | 1572 |
1449 | 1573 |
1450 void Thread::YieldCPU() { | 1574 void Thread::YieldCPU() { |
1451 Sleep(0); | 1575 Sleep(0); |
1452 } | 1576 } |
1453 | 1577 |
1454 } } // namespace v8::internal | 1578 } } // namespace v8::internal |
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