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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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50 | 50 |
51 Address slot_address() const { return slot_address_; } | 51 Address slot_address() const { return slot_address_; } |
52 double value() const { return val_; } | 52 double value() const { return val_; } |
53 | 53 |
54 private: | 54 private: |
55 Address slot_address_; | 55 Address slot_address_; |
56 double val_; | 56 double val_; |
57 }; | 57 }; |
58 | 58 |
59 | 59 |
60 class ArgumentsObjectMaterializationDescriptor BASE_EMBEDDED { | |
61 public: | |
62 ArgumentsObjectMaterializationDescriptor(Address slot_address, int argc) | |
63 : slot_address_(slot_address), arguments_length_(argc) { } | |
64 | |
65 Address slot_address() const { return slot_address_; } | |
66 int arguments_length() const { return arguments_length_; } | |
67 | |
68 private: | |
69 Address slot_address_; | |
70 int arguments_length_; | |
71 }; | |
72 | |
73 | |
74 class OptimizedFunctionVisitor BASE_EMBEDDED { | 60 class OptimizedFunctionVisitor BASE_EMBEDDED { |
75 public: | 61 public: |
76 virtual ~OptimizedFunctionVisitor() {} | 62 virtual ~OptimizedFunctionVisitor() {} |
77 | 63 |
78 // Function which is called before iteration of any optimized functions | 64 // Function which is called before iteration of any optimized functions |
79 // from given native context. | 65 // from given native context. |
80 virtual void EnterContext(Context* context) = 0; | 66 virtual void EnterContext(Context* context) = 0; |
81 | 67 |
82 virtual void VisitFunction(JSFunction* function) = 0; | 68 virtual void VisitFunction(JSFunction* function) = 0; |
83 | 69 |
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203 | 189 |
204 // Change all patched stack guard checks in the unoptimized code | 190 // Change all patched stack guard checks in the unoptimized code |
205 // back to a normal stack guard check. | 191 // back to a normal stack guard check. |
206 static void RevertStackCheckCodeAt(Code* unoptimized_code, | 192 static void RevertStackCheckCodeAt(Code* unoptimized_code, |
207 Address pc_after, | 193 Address pc_after, |
208 Code* check_code, | 194 Code* check_code, |
209 Code* replacement_code); | 195 Code* replacement_code); |
210 | 196 |
211 ~Deoptimizer(); | 197 ~Deoptimizer(); |
212 | 198 |
213 void MaterializeHeapObjects(JavaScriptFrameIterator* it); | 199 void MaterializeHeapNumbers(); |
214 #ifdef ENABLE_DEBUGGER_SUPPORT | 200 #ifdef ENABLE_DEBUGGER_SUPPORT |
215 void MaterializeHeapNumbersForDebuggerInspectableFrame( | 201 void MaterializeHeapNumbersForDebuggerInspectableFrame( |
216 Address parameters_top, | 202 Address parameters_top, |
217 uint32_t parameters_size, | 203 uint32_t parameters_size, |
218 Address expressions_top, | 204 Address expressions_top, |
219 uint32_t expressions_size, | 205 uint32_t expressions_size, |
220 DeoptimizedFrameInfo* info); | 206 DeoptimizedFrameInfo* info); |
221 #endif | 207 #endif |
222 | 208 |
223 static void ComputeOutputFrames(Deoptimizer* deoptimizer); | 209 static void ComputeOutputFrames(Deoptimizer* deoptimizer); |
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312 int* input_offset); | 298 int* input_offset); |
313 | 299 |
314 unsigned ComputeInputFrameSize() const; | 300 unsigned ComputeInputFrameSize() const; |
315 unsigned ComputeFixedSize(JSFunction* function) const; | 301 unsigned ComputeFixedSize(JSFunction* function) const; |
316 | 302 |
317 unsigned ComputeIncomingArgumentSize(JSFunction* function) const; | 303 unsigned ComputeIncomingArgumentSize(JSFunction* function) const; |
318 unsigned ComputeOutgoingArgumentSize() const; | 304 unsigned ComputeOutgoingArgumentSize() const; |
319 | 305 |
320 Object* ComputeLiteral(int index) const; | 306 Object* ComputeLiteral(int index) const; |
321 | 307 |
322 void AddArgumentsObject(intptr_t slot_address, int argc); | |
323 void AddArgumentsObjectValue(intptr_t value); | |
324 void AddDoubleValue(intptr_t slot_address, double value); | 308 void AddDoubleValue(intptr_t slot_address, double value); |
325 | 309 |
326 static MemoryChunk* CreateCode(BailoutType type); | 310 static MemoryChunk* CreateCode(BailoutType type); |
327 static void GenerateDeoptimizationEntries( | 311 static void GenerateDeoptimizationEntries( |
328 MacroAssembler* masm, int count, BailoutType type); | 312 MacroAssembler* masm, int count, BailoutType type); |
329 | 313 |
330 // Weak handle callback for deoptimizing code objects. | 314 // Weak handle callback for deoptimizing code objects. |
331 static void HandleWeakDeoptimizedCode( | 315 static void HandleWeakDeoptimizedCode( |
332 v8::Persistent<v8::Value> obj, void* data); | 316 v8::Persistent<v8::Value> obj, void* data); |
333 static Code* FindDeoptimizingCodeFromAddress(Address addr); | 317 static Code* FindDeoptimizingCodeFromAddress(Address addr); |
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349 | 333 |
350 // Input frame description. | 334 // Input frame description. |
351 FrameDescription* input_; | 335 FrameDescription* input_; |
352 // Number of output frames. | 336 // Number of output frames. |
353 int output_count_; | 337 int output_count_; |
354 // Number of output js frames. | 338 // Number of output js frames. |
355 int jsframe_count_; | 339 int jsframe_count_; |
356 // Array of output frame descriptions. | 340 // Array of output frame descriptions. |
357 FrameDescription** output_; | 341 FrameDescription** output_; |
358 | 342 |
359 List<Object*> deferred_arguments_objects_values_; | |
360 List<ArgumentsObjectMaterializationDescriptor> deferred_arguments_objects_; | |
361 List<HeapNumberMaterializationDescriptor> deferred_heap_numbers_; | 343 List<HeapNumberMaterializationDescriptor> deferred_heap_numbers_; |
362 | 344 |
363 static const int table_entry_size_; | 345 static const int table_entry_size_; |
364 | 346 |
365 friend class FrameDescription; | 347 friend class FrameDescription; |
366 friend class DeoptimizingCodeListNode; | 348 friend class DeoptimizingCodeListNode; |
367 friend class DeoptimizedFrameInfo; | 349 friend class DeoptimizedFrameInfo; |
368 }; | 350 }; |
369 | 351 |
370 | 352 |
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619 void BeginSetterStubFrame(int literal_id); | 601 void BeginSetterStubFrame(int literal_id); |
620 void StoreRegister(Register reg); | 602 void StoreRegister(Register reg); |
621 void StoreInt32Register(Register reg); | 603 void StoreInt32Register(Register reg); |
622 void StoreUint32Register(Register reg); | 604 void StoreUint32Register(Register reg); |
623 void StoreDoubleRegister(DoubleRegister reg); | 605 void StoreDoubleRegister(DoubleRegister reg); |
624 void StoreStackSlot(int index); | 606 void StoreStackSlot(int index); |
625 void StoreInt32StackSlot(int index); | 607 void StoreInt32StackSlot(int index); |
626 void StoreUint32StackSlot(int index); | 608 void StoreUint32StackSlot(int index); |
627 void StoreDoubleStackSlot(int index); | 609 void StoreDoubleStackSlot(int index); |
628 void StoreLiteral(int literal_id); | 610 void StoreLiteral(int literal_id); |
629 void StoreArgumentsObject(int args_index, int args_length); | 611 void StoreArgumentsObject(); |
630 void MarkDuplicate(); | 612 void MarkDuplicate(); |
631 | 613 |
632 Zone* zone() const { return zone_; } | 614 Zone* zone() const { return zone_; } |
633 | 615 |
634 static int NumberOfOperandsFor(Opcode opcode); | 616 static int NumberOfOperandsFor(Opcode opcode); |
635 | 617 |
636 #if defined(OBJECT_PRINT) || defined(ENABLE_DISASSEMBLER) | 618 #if defined(OBJECT_PRINT) || defined(ENABLE_DISASSEMBLER) |
637 static const char* StringFor(Opcode opcode); | 619 static const char* StringFor(Opcode opcode); |
638 #endif | 620 #endif |
639 | 621 |
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829 Object** expression_stack_; | 811 Object** expression_stack_; |
830 int source_position_; | 812 int source_position_; |
831 | 813 |
832 friend class Deoptimizer; | 814 friend class Deoptimizer; |
833 }; | 815 }; |
834 #endif | 816 #endif |
835 | 817 |
836 } } // namespace v8::internal | 818 } } // namespace v8::internal |
837 | 819 |
838 #endif // V8_DEOPTIMIZER_H_ | 820 #endif // V8_DEOPTIMIZER_H_ |
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