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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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86 inline void set_pc(Address value); | 86 inline void set_pc(Address value); |
87 | 87 |
88 DISALLOW_IMPLICIT_CONSTRUCTORS(StackHandler); | 88 DISALLOW_IMPLICIT_CONSTRUCTORS(StackHandler); |
89 }; | 89 }; |
90 | 90 |
91 | 91 |
92 #define STACK_FRAME_TYPE_LIST(V) \ | 92 #define STACK_FRAME_TYPE_LIST(V) \ |
93 V(ENTRY, EntryFrame) \ | 93 V(ENTRY, EntryFrame) \ |
94 V(ENTRY_CONSTRUCT, EntryConstructFrame) \ | 94 V(ENTRY_CONSTRUCT, EntryConstructFrame) \ |
95 V(EXIT, ExitFrame) \ | 95 V(EXIT, ExitFrame) \ |
| 96 V(EXIT_DEBUG, ExitDebugFrame) \ |
96 V(JAVA_SCRIPT, JavaScriptFrame) \ | 97 V(JAVA_SCRIPT, JavaScriptFrame) \ |
97 V(INTERNAL, InternalFrame) \ | 98 V(INTERNAL, InternalFrame) \ |
98 V(CONSTRUCT, ConstructFrame) \ | 99 V(CONSTRUCT, ConstructFrame) \ |
99 V(ARGUMENTS_ADAPTOR, ArgumentsAdaptorFrame) | 100 V(ARGUMENTS_ADAPTOR, ArgumentsAdaptorFrame) |
100 | 101 |
101 | 102 |
102 // Abstract base class for all stack frames. | 103 // Abstract base class for all stack frames. |
103 class StackFrame BASE_EMBEDDED { | 104 class StackFrame BASE_EMBEDDED { |
104 public: | 105 public: |
105 #define DECLARE_TYPE(type, ignore) type, | 106 #define DECLARE_TYPE(type, ignore) type, |
106 enum Type { | 107 enum Type { |
107 NONE = 0, | 108 NONE = 0, |
108 STACK_FRAME_TYPE_LIST(DECLARE_TYPE) | 109 STACK_FRAME_TYPE_LIST(DECLARE_TYPE) |
109 NUMBER_OF_TYPES | 110 NUMBER_OF_TYPES |
110 }; | 111 }; |
111 #undef DECLARE_TYPE | 112 #undef DECLARE_TYPE |
112 | 113 |
113 // Opaque data type for identifying stack frames. Used extensively | 114 // Opaque data type for identifying stack frames. Used extensively |
114 // by the debugger. | 115 // by the debugger. |
115 enum Id { NO_ID = 0 }; | 116 enum Id { NO_ID = 0 }; |
116 | 117 |
117 // Type testers. | 118 // Type testers. |
118 bool is_entry() const { return type() == ENTRY; } | 119 bool is_entry() const { return type() == ENTRY; } |
119 bool is_entry_construct() const { return type() == ENTRY_CONSTRUCT; } | 120 bool is_entry_construct() const { return type() == ENTRY_CONSTRUCT; } |
120 bool is_exit() const { return type() == EXIT; } | 121 bool is_exit() const { return type() == EXIT; } |
| 122 bool is_exit_debug() const { return type() == EXIT_DEBUG; } |
121 bool is_java_script() const { return type() == JAVA_SCRIPT; } | 123 bool is_java_script() const { return type() == JAVA_SCRIPT; } |
122 bool is_arguments_adaptor() const { return type() == ARGUMENTS_ADAPTOR; } | 124 bool is_arguments_adaptor() const { return type() == ARGUMENTS_ADAPTOR; } |
123 bool is_internal() const { return type() == INTERNAL; } | 125 bool is_internal() const { return type() == INTERNAL; } |
124 bool is_construct() const { return type() == CONSTRUCT; } | 126 bool is_construct() const { return type() == CONSTRUCT; } |
125 virtual bool is_standard() const { return false; } | 127 virtual bool is_standard() const { return false; } |
126 | 128 |
127 // Accessors. | 129 // Accessors. |
128 Address sp() const { return state_.sp; } | 130 Address sp() const { return state_.sp; } |
129 Address fp() const { return state_.fp; } | 131 Address fp() const { return state_.fp; } |
130 Address caller_sp() const { return GetCallerStackPointer(); } | 132 Address caller_sp() const { return GetCallerStackPointer(); } |
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251 : EntryFrame(iterator) { } | 253 : EntryFrame(iterator) { } |
252 | 254 |
253 private: | 255 private: |
254 friend class StackFrameIterator; | 256 friend class StackFrameIterator; |
255 }; | 257 }; |
256 | 258 |
257 | 259 |
258 // Exit frames are used to exit JavaScript execution and go to C. | 260 // Exit frames are used to exit JavaScript execution and go to C. |
259 class ExitFrame: public StackFrame { | 261 class ExitFrame: public StackFrame { |
260 public: | 262 public: |
261 enum Mode { MODE_NORMAL, MODE_DEBUG }; | |
262 virtual Type type() const { return EXIT; } | 263 virtual Type type() const { return EXIT; } |
263 | 264 |
264 virtual Code* code() const; | 265 virtual Code* code() const; |
265 | 266 |
266 // Garbage collection support. | 267 // Garbage collection support. |
267 virtual void Iterate(ObjectVisitor* v) const; | 268 virtual void Iterate(ObjectVisitor* v) const; |
268 | 269 |
269 static ExitFrame* cast(StackFrame* frame) { | 270 static ExitFrame* cast(StackFrame* frame) { |
270 ASSERT(frame->is_exit()); | 271 ASSERT(frame->is_exit()); |
271 return static_cast<ExitFrame*>(frame); | 272 return static_cast<ExitFrame*>(frame); |
272 } | 273 } |
273 | 274 |
274 // Compute the state and type of an exit frame given a frame | 275 // Compute the state and type of an exit frame given a frame |
275 // pointer. Used when constructing the first stack frame seen by an | 276 // pointer. Used when constructing the first stack frame seen by an |
276 // iterator and the frames following entry frames. | 277 // iterator and the frames following entry frames. |
277 static Type GetStateForFramePointer(Address fp, State* state); | 278 static Type GetStateForFramePointer(Address fp, State* state); |
278 | 279 |
279 protected: | 280 protected: |
280 explicit ExitFrame(StackFrameIterator* iterator) : StackFrame(iterator) { } | 281 explicit ExitFrame(StackFrameIterator* iterator) : StackFrame(iterator) { } |
281 | 282 |
282 virtual Address GetCallerStackPointer() const; | 283 virtual Address GetCallerStackPointer() const; |
283 | 284 |
284 private: | 285 private: |
285 virtual void ComputeCallerState(State* state) const; | 286 virtual void ComputeCallerState(State* state) const; |
286 | 287 |
287 friend class StackFrameIterator; | 288 friend class StackFrameIterator; |
288 }; | 289 }; |
289 | 290 |
290 | 291 |
| 292 class ExitDebugFrame: public ExitFrame { |
| 293 public: |
| 294 virtual Type type() const { return EXIT_DEBUG; } |
| 295 |
| 296 virtual Code* code() const; |
| 297 |
| 298 static ExitDebugFrame* cast(StackFrame* frame) { |
| 299 ASSERT(frame->is_exit_debug()); |
| 300 return static_cast<ExitDebugFrame*>(frame); |
| 301 } |
| 302 |
| 303 protected: |
| 304 explicit ExitDebugFrame(StackFrameIterator* iterator) |
| 305 : ExitFrame(iterator) { } |
| 306 |
| 307 private: |
| 308 friend class StackFrameIterator; |
| 309 }; |
| 310 |
| 311 |
291 class StandardFrame: public StackFrame { | 312 class StandardFrame: public StackFrame { |
292 public: | 313 public: |
293 // Testers. | 314 // Testers. |
294 virtual bool is_standard() const { return true; } | 315 virtual bool is_standard() const { return true; } |
295 | 316 |
296 // Accessors. | 317 // Accessors. |
297 inline Object* context() const; | 318 inline Object* context() const; |
298 | 319 |
299 // Access the expressions in the stack frame including locals. | 320 // Access the expressions in the stack frame including locals. |
300 inline Object* GetExpression(int index) const; | 321 inline Object* GetExpression(int index) const; |
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648 JavaScriptFrame* FindJavaScriptFrame(int n); | 669 JavaScriptFrame* FindJavaScriptFrame(int n); |
649 | 670 |
650 private: | 671 private: |
651 StackFrameIterator iterator_; | 672 StackFrameIterator iterator_; |
652 }; | 673 }; |
653 | 674 |
654 | 675 |
655 } } // namespace v8::internal | 676 } } // namespace v8::internal |
656 | 677 |
657 #endif // V8_FRAMES_H_ | 678 #endif // V8_FRAMES_H_ |
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