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1 // Copyright 2010 the V8 project authors. All rights reserved. | 1 // Copyright 2010 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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617 } | 617 } |
618 void Print(FILE* out); | 618 void Print(FILE* out); |
619 void PrintLn(FILE* out); | 619 void PrintLn(FILE* out); |
620 #endif | 620 #endif |
621 #ifdef DEBUG | 621 #ifdef DEBUG |
622 // Verifies the object. | 622 // Verifies the object. |
623 void Verify(); | 623 void Verify(); |
624 #endif | 624 #endif |
625 }; | 625 }; |
626 | 626 |
| 627 |
| 628 #define OBJECT_TYPE_LIST(V) \ |
| 629 V(Smi) \ |
| 630 V(HeapObject) \ |
| 631 V(Number) \ |
| 632 |
| 633 #define HEAP_OBJECT_TYPE_LIST(V) \ |
| 634 V(HeapNumber) \ |
| 635 V(String) \ |
| 636 V(Symbol) \ |
| 637 V(SeqString) \ |
| 638 V(ExternalString) \ |
| 639 V(ConsString) \ |
| 640 V(ExternalTwoByteString) \ |
| 641 V(ExternalAsciiString) \ |
| 642 V(SeqTwoByteString) \ |
| 643 V(SeqAsciiString) \ |
| 644 \ |
| 645 V(PixelArray) \ |
| 646 V(ExternalArray) \ |
| 647 V(ExternalByteArray) \ |
| 648 V(ExternalUnsignedByteArray) \ |
| 649 V(ExternalShortArray) \ |
| 650 V(ExternalUnsignedShortArray) \ |
| 651 V(ExternalIntArray) \ |
| 652 V(ExternalUnsignedIntArray) \ |
| 653 V(ExternalFloatArray) \ |
| 654 V(ByteArray) \ |
| 655 V(JSObject) \ |
| 656 V(JSContextExtensionObject) \ |
| 657 V(Map) \ |
| 658 V(DescriptorArray) \ |
| 659 V(DeoptimizationInputData) \ |
| 660 V(DeoptimizationOutputData) \ |
| 661 V(FixedArray) \ |
| 662 V(Context) \ |
| 663 V(CatchContext) \ |
| 664 V(GlobalContext) \ |
| 665 V(JSFunction) \ |
| 666 V(Code) \ |
| 667 V(Oddball) \ |
| 668 V(SharedFunctionInfo) \ |
| 669 V(JSValue) \ |
| 670 V(StringWrapper) \ |
| 671 V(Proxy) \ |
| 672 V(Boolean) \ |
| 673 V(JSArray) \ |
| 674 V(JSRegExp) \ |
| 675 V(HashTable) \ |
| 676 V(Dictionary) \ |
| 677 V(SymbolTable) \ |
| 678 V(JSFunctionResultCache) \ |
| 679 V(NormalizedMapCache) \ |
| 680 V(CompilationCacheTable) \ |
| 681 V(CodeCacheHashTable) \ |
| 682 V(MapCache) \ |
| 683 V(Primitive) \ |
| 684 V(GlobalObject) \ |
| 685 V(JSGlobalObject) \ |
| 686 V(JSBuiltinsObject) \ |
| 687 V(JSGlobalProxy) \ |
| 688 V(UndetectableObject) \ |
| 689 V(AccessCheckNeeded) \ |
| 690 V(JSGlobalPropertyCell) \ |
| 691 |
627 // Object is the abstract superclass for all classes in the | 692 // Object is the abstract superclass for all classes in the |
628 // object hierarchy. | 693 // object hierarchy. |
629 // Object does not use any virtual functions to avoid the | 694 // Object does not use any virtual functions to avoid the |
630 // allocation of the C++ vtable. | 695 // allocation of the C++ vtable. |
631 // Since Smi and Failure are subclasses of Object no | 696 // Since Smi and Failure are subclasses of Object no |
632 // data members can be present in Object. | 697 // data members can be present in Object. |
633 class Object : public MaybeObject { | 698 class Object : public MaybeObject { |
634 public: | 699 public: |
635 // Type testing. | 700 // Type testing. |
636 inline bool IsSmi(); | 701 #define IS_TYPE_FUNCTION_DECL(type_) inline bool Is##type_(); |
637 inline bool IsHeapObject(); | 702 OBJECT_TYPE_LIST(IS_TYPE_FUNCTION_DECL) |
638 inline bool IsHeapNumber(); | 703 HEAP_OBJECT_TYPE_LIST(IS_TYPE_FUNCTION_DECL) |
639 inline bool IsString(); | 704 #undef IS_TYPE_FUNCTION_DECL |
640 inline bool IsSymbol(); | |
641 // See objects-inl.h for more details | |
642 inline bool IsSeqString(); | |
643 inline bool IsExternalString(); | |
644 inline bool IsExternalTwoByteString(); | |
645 inline bool IsExternalAsciiString(); | |
646 inline bool IsSeqTwoByteString(); | |
647 inline bool IsSeqAsciiString(); | |
648 inline bool IsConsString(); | |
649 | |
650 inline bool IsNumber(); | |
651 inline bool IsByteArray(); | |
652 inline bool IsPixelArray(); | |
653 inline bool IsExternalArray(); | |
654 inline bool IsExternalByteArray(); | |
655 inline bool IsExternalUnsignedByteArray(); | |
656 inline bool IsExternalShortArray(); | |
657 inline bool IsExternalUnsignedShortArray(); | |
658 inline bool IsExternalIntArray(); | |
659 inline bool IsExternalUnsignedIntArray(); | |
660 inline bool IsExternalFloatArray(); | |
661 inline bool IsJSObject(); | |
662 inline bool IsJSContextExtensionObject(); | |
663 inline bool IsMap(); | |
664 inline bool IsFixedArray(); | |
665 inline bool IsDescriptorArray(); | |
666 inline bool IsDeoptimizationInputData(); | |
667 inline bool IsDeoptimizationOutputData(); | |
668 inline bool IsContext(); | |
669 inline bool IsCatchContext(); | |
670 inline bool IsGlobalContext(); | |
671 inline bool IsJSFunction(); | |
672 inline bool IsCode(); | |
673 inline bool IsOddball(); | |
674 inline bool IsSharedFunctionInfo(); | |
675 inline bool IsJSValue(); | |
676 inline bool IsStringWrapper(); | |
677 inline bool IsProxy(); | |
678 inline bool IsBoolean(); | |
679 inline bool IsJSArray(); | |
680 inline bool IsJSRegExp(); | |
681 inline bool IsHashTable(); | |
682 inline bool IsDictionary(); | |
683 inline bool IsSymbolTable(); | |
684 inline bool IsJSFunctionResultCache(); | |
685 inline bool IsNormalizedMapCache(); | |
686 inline bool IsCompilationCacheTable(); | |
687 inline bool IsCodeCacheHashTable(); | |
688 inline bool IsMapCache(); | |
689 inline bool IsPrimitive(); | |
690 inline bool IsGlobalObject(); | |
691 inline bool IsJSGlobalObject(); | |
692 inline bool IsJSBuiltinsObject(); | |
693 inline bool IsJSGlobalProxy(); | |
694 inline bool IsUndetectableObject(); | |
695 inline bool IsAccessCheckNeeded(); | |
696 inline bool IsJSGlobalPropertyCell(); | |
697 | 705 |
698 // Returns true if this object is an instance of the specified | 706 // Returns true if this object is an instance of the specified |
699 // function template. | 707 // function template. |
700 inline bool IsInstanceOf(FunctionTemplateInfo* type); | 708 inline bool IsInstanceOf(FunctionTemplateInfo* type); |
701 | 709 |
702 inline bool IsStruct(); | 710 inline bool IsStruct(); |
703 #define DECLARE_STRUCT_PREDICATE(NAME, Name, name) inline bool Is##Name(); | 711 #define DECLARE_STRUCT_PREDICATE(NAME, Name, name) inline bool Is##Name(); |
704 STRUCT_LIST(DECLARE_STRUCT_PREDICATE) | 712 STRUCT_LIST(DECLARE_STRUCT_PREDICATE) |
705 #undef DECLARE_STRUCT_PREDICATE | 713 #undef DECLARE_STRUCT_PREDICATE |
706 | 714 |
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2606 | 2614 |
2607 static const int kEntrySize = 2; // key + value | 2615 static const int kEntrySize = 2; // key + value |
2608 | 2616 |
2609 static const int kFactoryOffset = kHeaderSize; | 2617 static const int kFactoryOffset = kHeaderSize; |
2610 static const int kFingerOffset = kFactoryOffset + kPointerSize; | 2618 static const int kFingerOffset = kFactoryOffset + kPointerSize; |
2611 static const int kCacheSizeOffset = kFingerOffset + kPointerSize; | 2619 static const int kCacheSizeOffset = kFingerOffset + kPointerSize; |
2612 | 2620 |
2613 inline void MakeZeroSize(); | 2621 inline void MakeZeroSize(); |
2614 inline void Clear(); | 2622 inline void Clear(); |
2615 | 2623 |
| 2624 inline int size(); |
| 2625 inline void set_size(int size); |
| 2626 inline int finger_index(); |
| 2627 inline void set_finger_index(int finger_index); |
| 2628 |
2616 // Casting | 2629 // Casting |
2617 static inline JSFunctionResultCache* cast(Object* obj); | 2630 static inline JSFunctionResultCache* cast(Object* obj); |
2618 | 2631 |
2619 #ifdef DEBUG | 2632 #ifdef DEBUG |
2620 void JSFunctionResultCacheVerify(); | 2633 void JSFunctionResultCacheVerify(); |
2621 #endif | 2634 #endif |
2622 }; | 2635 }; |
2623 | 2636 |
2624 | 2637 |
2625 // The cache for maps used by normalized (dictionary mode) objects. | 2638 // The cache for maps used by normalized (dictionary mode) objects. |
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3156 // Pseudo-kinds. | 3169 // Pseudo-kinds. |
3157 REGEXP = BUILTIN, | 3170 REGEXP = BUILTIN, |
3158 FIRST_IC_KIND = LOAD_IC, | 3171 FIRST_IC_KIND = LOAD_IC, |
3159 LAST_IC_KIND = COMPARE_IC | 3172 LAST_IC_KIND = COMPARE_IC |
3160 }; | 3173 }; |
3161 | 3174 |
3162 enum { | 3175 enum { |
3163 NUMBER_OF_KINDS = LAST_IC_KIND + 1 | 3176 NUMBER_OF_KINDS = LAST_IC_KIND + 1 |
3164 }; | 3177 }; |
3165 | 3178 |
| 3179 typedef int ExtraICState; |
| 3180 |
| 3181 static const ExtraICState kNoExtraICState = 0; |
| 3182 |
3166 #ifdef ENABLE_DISASSEMBLER | 3183 #ifdef ENABLE_DISASSEMBLER |
3167 // Printing | 3184 // Printing |
3168 static const char* Kind2String(Kind kind); | 3185 static const char* Kind2String(Kind kind); |
3169 static const char* ICState2String(InlineCacheState state); | 3186 static const char* ICState2String(InlineCacheState state); |
3170 static const char* PropertyType2String(PropertyType type); | 3187 static const char* PropertyType2String(PropertyType type); |
3171 inline void Disassemble(const char* name) { | 3188 inline void Disassemble(const char* name) { |
3172 Disassemble(name, stdout); | 3189 Disassemble(name, stdout); |
3173 } | 3190 } |
3174 void Disassemble(const char* name, FILE* out); | 3191 void Disassemble(const char* name, FILE* out); |
3175 #endif // ENABLE_DISASSEMBLER | 3192 #endif // ENABLE_DISASSEMBLER |
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3191 | 3208 |
3192 inline int relocation_size(); | 3209 inline int relocation_size(); |
3193 | 3210 |
3194 // [flags]: Various code flags. | 3211 // [flags]: Various code flags. |
3195 inline Flags flags(); | 3212 inline Flags flags(); |
3196 inline void set_flags(Flags flags); | 3213 inline void set_flags(Flags flags); |
3197 | 3214 |
3198 // [flags]: Access to specific code flags. | 3215 // [flags]: Access to specific code flags. |
3199 inline Kind kind(); | 3216 inline Kind kind(); |
3200 inline InlineCacheState ic_state(); // Only valid for IC stubs. | 3217 inline InlineCacheState ic_state(); // Only valid for IC stubs. |
| 3218 inline ExtraICState extra_ic_state(); // Only valid for IC stubs. |
3201 inline InLoopFlag ic_in_loop(); // Only valid for IC stubs. | 3219 inline InLoopFlag ic_in_loop(); // Only valid for IC stubs. |
3202 inline PropertyType type(); // Only valid for monomorphic IC stubs. | 3220 inline PropertyType type(); // Only valid for monomorphic IC stubs. |
3203 inline int arguments_count(); // Only valid for call IC stubs. | 3221 inline int arguments_count(); // Only valid for call IC stubs. |
3204 | 3222 |
3205 // Testers for IC stub kinds. | 3223 // Testers for IC stub kinds. |
3206 inline bool is_inline_cache_stub(); | 3224 inline bool is_inline_cache_stub(); |
3207 inline bool is_load_stub() { return kind() == LOAD_IC; } | 3225 inline bool is_load_stub() { return kind() == LOAD_IC; } |
3208 inline bool is_keyed_load_stub() { return kind() == KEYED_LOAD_IC; } | 3226 inline bool is_keyed_load_stub() { return kind() == KEYED_LOAD_IC; } |
3209 inline bool is_store_stub() { return kind() == STORE_IC; } | 3227 inline bool is_store_stub() { return kind() == STORE_IC; } |
3210 inline bool is_keyed_store_stub() { return kind() == KEYED_STORE_IC; } | 3228 inline bool is_keyed_store_stub() { return kind() == KEYED_STORE_IC; } |
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3275 SafepointEntry GetSafepointEntry(Address pc); | 3293 SafepointEntry GetSafepointEntry(Address pc); |
3276 | 3294 |
3277 // Mark this code object as not having a stack check table. Assumes kind | 3295 // Mark this code object as not having a stack check table. Assumes kind |
3278 // is FUNCTION. | 3296 // is FUNCTION. |
3279 void SetNoStackCheckTable(); | 3297 void SetNoStackCheckTable(); |
3280 | 3298 |
3281 // Find the first map in an IC stub. | 3299 // Find the first map in an IC stub. |
3282 Map* FindFirstMap(); | 3300 Map* FindFirstMap(); |
3283 | 3301 |
3284 // Flags operations. | 3302 // Flags operations. |
3285 static inline Flags ComputeFlags(Kind kind, | 3303 static inline Flags ComputeFlags( |
3286 InLoopFlag in_loop = NOT_IN_LOOP, | 3304 Kind kind, |
3287 InlineCacheState ic_state = UNINITIALIZED, | 3305 InLoopFlag in_loop = NOT_IN_LOOP, |
3288 PropertyType type = NORMAL, | 3306 InlineCacheState ic_state = UNINITIALIZED, |
3289 int argc = -1, | 3307 ExtraICState extra_ic_state = kNoExtraICState, |
3290 InlineCacheHolderFlag holder = OWN_MAP); | 3308 PropertyType type = NORMAL, |
| 3309 int argc = -1, |
| 3310 InlineCacheHolderFlag holder = OWN_MAP); |
3291 | 3311 |
3292 static inline Flags ComputeMonomorphicFlags( | 3312 static inline Flags ComputeMonomorphicFlags( |
3293 Kind kind, | 3313 Kind kind, |
3294 PropertyType type, | 3314 PropertyType type, |
| 3315 ExtraICState extra_ic_state = kNoExtraICState, |
3295 InlineCacheHolderFlag holder = OWN_MAP, | 3316 InlineCacheHolderFlag holder = OWN_MAP, |
3296 InLoopFlag in_loop = NOT_IN_LOOP, | 3317 InLoopFlag in_loop = NOT_IN_LOOP, |
3297 int argc = -1); | 3318 int argc = -1); |
3298 | 3319 |
3299 static inline Kind ExtractKindFromFlags(Flags flags); | 3320 static inline Kind ExtractKindFromFlags(Flags flags); |
3300 static inline InlineCacheState ExtractICStateFromFlags(Flags flags); | 3321 static inline InlineCacheState ExtractICStateFromFlags(Flags flags); |
| 3322 static inline ExtraICState ExtractExtraICStateFromFlags(Flags flags); |
3301 static inline InLoopFlag ExtractICInLoopFromFlags(Flags flags); | 3323 static inline InLoopFlag ExtractICInLoopFromFlags(Flags flags); |
3302 static inline PropertyType ExtractTypeFromFlags(Flags flags); | 3324 static inline PropertyType ExtractTypeFromFlags(Flags flags); |
3303 static inline int ExtractArgumentsCountFromFlags(Flags flags); | 3325 static inline int ExtractArgumentsCountFromFlags(Flags flags); |
3304 static inline InlineCacheHolderFlag ExtractCacheHolderFromFlags(Flags flags); | 3326 static inline InlineCacheHolderFlag ExtractCacheHolderFromFlags(Flags flags); |
3305 static inline Flags RemoveTypeFromFlags(Flags flags); | 3327 static inline Flags RemoveTypeFromFlags(Flags flags); |
3306 | 3328 |
3307 // Convert a target address into a code object. | 3329 // Convert a target address into a code object. |
3308 static inline Code* GetCodeFromTargetAddress(Address address); | 3330 static inline Code* GetCodeFromTargetAddress(Address address); |
3309 | 3331 |
3310 // Convert an entry address into an object. | 3332 // Convert an entry address into an object. |
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3411 | 3433 |
3412 static const int kSafepointTableStartOffset = kStackSlotsOffset + kIntSize; | 3434 static const int kSafepointTableStartOffset = kStackSlotsOffset + kIntSize; |
3413 static const int kStackCheckTableStartOffset = kStackSlotsOffset + kIntSize; | 3435 static const int kStackCheckTableStartOffset = kStackSlotsOffset + kIntSize; |
3414 | 3436 |
3415 // Flags layout. | 3437 // Flags layout. |
3416 static const int kFlagsICStateShift = 0; | 3438 static const int kFlagsICStateShift = 0; |
3417 static const int kFlagsICInLoopShift = 3; | 3439 static const int kFlagsICInLoopShift = 3; |
3418 static const int kFlagsTypeShift = 4; | 3440 static const int kFlagsTypeShift = 4; |
3419 static const int kFlagsKindShift = 7; | 3441 static const int kFlagsKindShift = 7; |
3420 static const int kFlagsICHolderShift = 11; | 3442 static const int kFlagsICHolderShift = 11; |
3421 static const int kFlagsArgumentsCountShift = 12; | 3443 static const int kFlagsExtraICStateShift = 12; |
| 3444 static const int kFlagsArgumentsCountShift = 14; |
3422 | 3445 |
3423 static const int kFlagsICStateMask = 0x00000007; // 00000000111 | 3446 static const int kFlagsICStateMask = 0x00000007; // 00000000111 |
3424 static const int kFlagsICInLoopMask = 0x00000008; // 00000001000 | 3447 static const int kFlagsICInLoopMask = 0x00000008; // 00000001000 |
3425 static const int kFlagsTypeMask = 0x00000070; // 00001110000 | 3448 static const int kFlagsTypeMask = 0x00000070; // 00001110000 |
3426 static const int kFlagsKindMask = 0x00000780; // 11110000000 | 3449 static const int kFlagsKindMask = 0x00000780; // 11110000000 |
3427 static const int kFlagsCacheInPrototypeMapMask = 0x00000800; | 3450 static const int kFlagsCacheInPrototypeMapMask = 0x00000800; |
3428 static const int kFlagsArgumentsCountMask = 0xFFFFF000; | 3451 static const int kFlagsExtraICStateMask = 0x00003000; |
| 3452 static const int kFlagsArgumentsCountMask = 0xFFFFC000; |
3429 | 3453 |
3430 static const int kFlagsNotUsedInLookup = | 3454 static const int kFlagsNotUsedInLookup = |
3431 (kFlagsICInLoopMask | kFlagsTypeMask | kFlagsCacheInPrototypeMapMask); | 3455 (kFlagsICInLoopMask | kFlagsTypeMask | kFlagsCacheInPrototypeMapMask); |
3432 | 3456 |
3433 private: | 3457 private: |
3434 DISALLOW_IMPLICIT_CONSTRUCTORS(Code); | 3458 DISALLOW_IMPLICIT_CONSTRUCTORS(Code); |
3435 }; | 3459 }; |
3436 | 3460 |
3437 | 3461 |
3438 // All heap objects have a Map that describes their structure. | 3462 // All heap objects have a Map that describes their structure. |
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6393 } else { | 6417 } else { |
6394 value &= ~(1 << bit_position); | 6418 value &= ~(1 << bit_position); |
6395 } | 6419 } |
6396 return value; | 6420 return value; |
6397 } | 6421 } |
6398 }; | 6422 }; |
6399 | 6423 |
6400 } } // namespace v8::internal | 6424 } } // namespace v8::internal |
6401 | 6425 |
6402 #endif // V8_OBJECTS_H_ | 6426 #endif // V8_OBJECTS_H_ |
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