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1 // Copyright 2006-2008 the V8 project authors. All rights reserved. | 1 // Copyright 2006-2008 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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139 void SetDebugBreak(); | 139 void SetDebugBreak(); |
140 void ClearDebugBreak(); | 140 void ClearDebugBreak(); |
141 | 141 |
142 void SetDebugBreakAtIC(); | 142 void SetDebugBreakAtIC(); |
143 void ClearDebugBreakAtIC(); | 143 void ClearDebugBreakAtIC(); |
144 | 144 |
145 bool IsDebugBreakAtReturn(); | 145 bool IsDebugBreakAtReturn(); |
146 void SetDebugBreakAtReturn(); | 146 void SetDebugBreakAtReturn(); |
147 void ClearDebugBreakAtReturn(); | 147 void ClearDebugBreakAtReturn(); |
148 | 148 |
| 149 bool IsDebugBreakSlot(); |
| 150 bool IsDebugBreakAtSlot(); |
| 151 void SetDebugBreakAtSlot(); |
| 152 void ClearDebugBreakAtSlot(); |
| 153 |
149 DISALLOW_COPY_AND_ASSIGN(BreakLocationIterator); | 154 DISALLOW_COPY_AND_ASSIGN(BreakLocationIterator); |
150 }; | 155 }; |
151 | 156 |
152 | 157 |
153 // Cache of all script objects in the heap. When a script is added a weak handle | 158 // Cache of all script objects in the heap. When a script is added a weak handle |
154 // to it is created and that weak handle is stored in the cache. The weak handle | 159 // to it is created and that weak handle is stored in the cache. The weak handle |
155 // callback takes care of removing the script from the cache. The key used in | 160 // callback takes care of removing the script from the cache. The key used in |
156 // the cache is the script id. | 161 // the cache is the script id. |
157 class ScriptCache : private HashMap { | 162 class ScriptCache : private HashMap { |
158 public: | 163 public: |
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316 | 321 |
317 // Getters for the current exception break state. | 322 // Getters for the current exception break state. |
318 static bool break_on_exception() { return break_on_exception_; } | 323 static bool break_on_exception() { return break_on_exception_; } |
319 static bool break_on_uncaught_exception() { | 324 static bool break_on_uncaught_exception() { |
320 return break_on_uncaught_exception_; | 325 return break_on_uncaught_exception_; |
321 } | 326 } |
322 | 327 |
323 enum AddressId { | 328 enum AddressId { |
324 k_after_break_target_address, | 329 k_after_break_target_address, |
325 k_debug_break_return_address, | 330 k_debug_break_return_address, |
| 331 k_debug_break_slot_address, |
326 k_register_address | 332 k_register_address |
327 }; | 333 }; |
328 | 334 |
329 // Support for setting the address to jump to when returning from break point. | 335 // Support for setting the address to jump to when returning from break point. |
330 static Address* after_break_target_address() { | 336 static Address* after_break_target_address() { |
331 return reinterpret_cast<Address*>(&thread_local_.after_break_target_); | 337 return reinterpret_cast<Address*>(&thread_local_.after_break_target_); |
332 } | 338 } |
333 | 339 |
334 // Support for saving/restoring registers when handling debug break calls. | 340 // Support for saving/restoring registers when handling debug break calls. |
335 static Object** register_address(int r) { | 341 static Object** register_address(int r) { |
336 return ®isters_[r]; | 342 return ®isters_[r]; |
337 } | 343 } |
338 | 344 |
339 // Access to the debug break on return code. | 345 // Access to the debug break on return code. |
340 static Code* debug_break_return() { return debug_break_return_; } | 346 static Code* debug_break_return() { return debug_break_return_; } |
341 static Code** debug_break_return_address() { | 347 static Code** debug_break_return_address() { |
342 return &debug_break_return_; | 348 return &debug_break_return_; |
343 } | 349 } |
344 | 350 |
| 351 // Access to the debug break in debug break slot code. |
| 352 static Code* debug_break_slot() { return debug_break_slot_; } |
| 353 static Code** debug_break_slot_address() { |
| 354 return &debug_break_slot_; |
| 355 } |
| 356 |
345 static const int kEstimatedNofDebugInfoEntries = 16; | 357 static const int kEstimatedNofDebugInfoEntries = 16; |
346 static const int kEstimatedNofBreakPointsInFunction = 16; | 358 static const int kEstimatedNofBreakPointsInFunction = 16; |
347 | 359 |
348 static void HandleWeakDebugInfo(v8::Persistent<v8::Value> obj, void* data); | 360 static void HandleWeakDebugInfo(v8::Persistent<v8::Value> obj, void* data); |
349 | 361 |
350 friend class Debugger; | 362 friend class Debugger; |
351 friend Handle<FixedArray> GetDebuggedFunctions(); // In test-debug.cc | 363 friend Handle<FixedArray> GetDebuggedFunctions(); // In test-debug.cc |
352 friend void CheckDebuggerUnloaded(bool check_functions); // In test-debug.cc | 364 friend void CheckDebuggerUnloaded(bool check_functions); // In test-debug.cc |
353 | 365 |
354 // Threading support. | 366 // Threading support. |
355 static char* ArchiveDebug(char* to); | 367 static char* ArchiveDebug(char* to); |
356 static char* RestoreDebug(char* from); | 368 static char* RestoreDebug(char* from); |
357 static int ArchiveSpacePerThread(); | 369 static int ArchiveSpacePerThread(); |
358 static void FreeThreadResources() { } | 370 static void FreeThreadResources() { } |
359 | 371 |
360 // Mirror cache handling. | 372 // Mirror cache handling. |
361 static void ClearMirrorCache(); | 373 static void ClearMirrorCache(); |
362 | 374 |
363 // Script cache handling. | 375 // Script cache handling. |
364 static void CreateScriptCache(); | 376 static void CreateScriptCache(); |
365 static void DestroyScriptCache(); | 377 static void DestroyScriptCache(); |
366 static void AddScriptToScriptCache(Handle<Script> script); | 378 static void AddScriptToScriptCache(Handle<Script> script); |
367 static Handle<FixedArray> GetLoadedScripts(); | 379 static Handle<FixedArray> GetLoadedScripts(); |
368 | 380 |
369 // Garbage collection notifications. | 381 // Garbage collection notifications. |
370 static void AfterGarbageCollection(); | 382 static void AfterGarbageCollection(); |
371 | 383 |
372 // Code generator routines. | 384 // Code generator routines. |
| 385 static void GenerateSlot(MacroAssembler* masm); |
373 static void GenerateLoadICDebugBreak(MacroAssembler* masm); | 386 static void GenerateLoadICDebugBreak(MacroAssembler* masm); |
374 static void GenerateStoreICDebugBreak(MacroAssembler* masm); | 387 static void GenerateStoreICDebugBreak(MacroAssembler* masm); |
375 static void GenerateKeyedLoadICDebugBreak(MacroAssembler* masm); | 388 static void GenerateKeyedLoadICDebugBreak(MacroAssembler* masm); |
376 static void GenerateKeyedStoreICDebugBreak(MacroAssembler* masm); | 389 static void GenerateKeyedStoreICDebugBreak(MacroAssembler* masm); |
377 static void GenerateConstructCallDebugBreak(MacroAssembler* masm); | 390 static void GenerateConstructCallDebugBreak(MacroAssembler* masm); |
378 static void GenerateReturnDebugBreak(MacroAssembler* masm); | 391 static void GenerateReturnDebugBreak(MacroAssembler* masm); |
379 static void GenerateStubNoRegistersDebugBreak(MacroAssembler* masm); | 392 static void GenerateStubNoRegistersDebugBreak(MacroAssembler* masm); |
| 393 static void GenerateSlotDebugBreak(MacroAssembler* masm); |
380 static void GeneratePlainReturnLiveEdit(MacroAssembler* masm); | 394 static void GeneratePlainReturnLiveEdit(MacroAssembler* masm); |
381 static void GenerateFrameDropperLiveEdit(MacroAssembler* masm); | 395 static void GenerateFrameDropperLiveEdit(MacroAssembler* masm); |
382 | 396 |
383 // Called from stub-cache.cc. | 397 // Called from stub-cache.cc. |
384 static void GenerateCallICDebugBreak(MacroAssembler* masm); | 398 static void GenerateCallICDebugBreak(MacroAssembler* masm); |
385 | 399 |
386 static void FramesHaveBeenDropped(StackFrame::Id new_break_frame_id); | 400 static void FramesHaveBeenDropped(StackFrame::Id new_break_frame_id); |
387 | 401 |
388 static void SetUpFrameDropperFrame(StackFrame* bottom_js_frame, | 402 static void SetUpFrameDropperFrame(StackFrame* bottom_js_frame, |
389 Handle<Code> code); | 403 Handle<Code> code); |
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465 }; | 479 }; |
466 | 480 |
467 // Storage location for registers when handling debug break calls | 481 // Storage location for registers when handling debug break calls |
468 static JSCallerSavedBuffer registers_; | 482 static JSCallerSavedBuffer registers_; |
469 static ThreadLocal thread_local_; | 483 static ThreadLocal thread_local_; |
470 static void ThreadInit(); | 484 static void ThreadInit(); |
471 | 485 |
472 // Code to call for handling debug break on return. | 486 // Code to call for handling debug break on return. |
473 static Code* debug_break_return_; | 487 static Code* debug_break_return_; |
474 | 488 |
| 489 // Code to call for handling debug break in debug break slots. |
| 490 static Code* debug_break_slot_; |
| 491 |
475 DISALLOW_COPY_AND_ASSIGN(Debug); | 492 DISALLOW_COPY_AND_ASSIGN(Debug); |
476 }; | 493 }; |
477 | 494 |
478 | 495 |
479 // Message delivered to the message handler callback. This is either a debugger | 496 // Message delivered to the message handler callback. This is either a debugger |
480 // event or the response to a command. | 497 // event or the response to a command. |
481 class MessageImpl: public v8::Debug::Message { | 498 class MessageImpl: public v8::Debug::Message { |
482 public: | 499 public: |
483 // Create a message object for a debug event. | 500 // Create a message object for a debug event. |
484 static MessageImpl NewEvent(DebugEvent event, | 501 static MessageImpl NewEvent(DebugEvent event, |
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888 static Debug_Address Register(int reg) { | 905 static Debug_Address Register(int reg) { |
889 return Debug_Address(Debug::k_register_address, reg); | 906 return Debug_Address(Debug::k_register_address, reg); |
890 } | 907 } |
891 | 908 |
892 Address address() const { | 909 Address address() const { |
893 switch (id_) { | 910 switch (id_) { |
894 case Debug::k_after_break_target_address: | 911 case Debug::k_after_break_target_address: |
895 return reinterpret_cast<Address>(Debug::after_break_target_address()); | 912 return reinterpret_cast<Address>(Debug::after_break_target_address()); |
896 case Debug::k_debug_break_return_address: | 913 case Debug::k_debug_break_return_address: |
897 return reinterpret_cast<Address>(Debug::debug_break_return_address()); | 914 return reinterpret_cast<Address>(Debug::debug_break_return_address()); |
| 915 case Debug::k_debug_break_slot_address: |
| 916 return reinterpret_cast<Address>(Debug::debug_break_slot_address()); |
898 case Debug::k_register_address: | 917 case Debug::k_register_address: |
899 return reinterpret_cast<Address>(Debug::register_address(reg_)); | 918 return reinterpret_cast<Address>(Debug::register_address(reg_)); |
900 default: | 919 default: |
901 UNREACHABLE(); | 920 UNREACHABLE(); |
902 return NULL; | 921 return NULL; |
903 } | 922 } |
904 } | 923 } |
905 private: | 924 private: |
906 Debug::AddressId id_; | 925 Debug::AddressId id_; |
907 int reg_; | 926 int reg_; |
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927 | 946 |
928 DISALLOW_COPY_AND_ASSIGN(MessageDispatchHelperThread); | 947 DISALLOW_COPY_AND_ASSIGN(MessageDispatchHelperThread); |
929 }; | 948 }; |
930 | 949 |
931 | 950 |
932 } } // namespace v8::internal | 951 } } // namespace v8::internal |
933 | 952 |
934 #endif // ENABLE_DEBUGGER_SUPPORT | 953 #endif // ENABLE_DEBUGGER_SUPPORT |
935 | 954 |
936 #endif // V8_DEBUG_H_ | 955 #endif // V8_DEBUG_H_ |
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