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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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4803 enum StubType { | 4803 enum StubType { |
4804 NORMAL, | 4804 NORMAL, |
4805 FIELD, | 4805 FIELD, |
4806 CONSTANT, | 4806 CONSTANT, |
4807 CALLBACKS, | 4807 CALLBACKS, |
4808 INTERCEPTOR, | 4808 INTERCEPTOR, |
4809 TRANSITION, | 4809 TRANSITION, |
4810 NONEXISTENT | 4810 NONEXISTENT |
4811 }; | 4811 }; |
4812 | 4812 |
4813 enum StubHolder { | |
4814 OWN_STUB, | |
4815 PROTOTYPE_STUB | |
4816 }; | |
4817 | |
4818 typedef int ExtraICState; | 4813 typedef int ExtraICState; |
4819 | 4814 |
4820 static const ExtraICState kNoExtraICState = 0; | 4815 static const ExtraICState kNoExtraICState = 0; |
4821 | 4816 |
4822 #ifdef ENABLE_DISASSEMBLER | 4817 #ifdef ENABLE_DISASSEMBLER |
4823 // Printing | 4818 // Printing |
4824 static const char* ICState2String(InlineCacheState state); | 4819 static const char* ICState2String(InlineCacheState state); |
4825 static const char* StubType2String(StubType type); | 4820 static const char* StubType2String(StubType type); |
4826 static void PrintExtraICState(FILE* out, Kind kind, ExtraICState extra); | 4821 static void PrintExtraICState(FILE* out, Kind kind, ExtraICState extra); |
4827 void Disassemble(const char* name, FILE* out = stdout); | 4822 void Disassemble(const char* name, FILE* out = stdout); |
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5012 | 5007 |
5013 // Find the first name in an IC stub. | 5008 // Find the first name in an IC stub. |
5014 Name* FindFirstName(); | 5009 Name* FindFirstName(); |
5015 | 5010 |
5016 void ReplaceNthCell(int n, Cell* replace_with); | 5011 void ReplaceNthCell(int n, Cell* replace_with); |
5017 | 5012 |
5018 class ExtraICStateStrictMode: public BitField<StrictModeFlag, 0, 1> {}; | 5013 class ExtraICStateStrictMode: public BitField<StrictModeFlag, 0, 1> {}; |
5019 class ExtraICStateKeyedAccessStoreMode: | 5014 class ExtraICStateKeyedAccessStoreMode: |
5020 public BitField<KeyedAccessStoreMode, 1, 4> {}; // NOLINT | 5015 public BitField<KeyedAccessStoreMode, 1, 4> {}; // NOLINT |
5021 | 5016 |
5022 class ExtraICStateStubHolder: public BitField<StubHolder, 0, 1> {}; | |
5023 | |
5024 static inline StrictModeFlag GetStrictMode(ExtraICState extra_ic_state) { | 5017 static inline StrictModeFlag GetStrictMode(ExtraICState extra_ic_state) { |
5025 return ExtraICStateStrictMode::decode(extra_ic_state); | 5018 return ExtraICStateStrictMode::decode(extra_ic_state); |
5026 } | 5019 } |
5027 | 5020 |
5028 static inline KeyedAccessStoreMode GetKeyedAccessStoreMode( | 5021 static inline KeyedAccessStoreMode GetKeyedAccessStoreMode( |
5029 ExtraICState extra_ic_state) { | 5022 ExtraICState extra_ic_state) { |
5030 return ExtraICStateKeyedAccessStoreMode::decode(extra_ic_state); | 5023 return ExtraICStateKeyedAccessStoreMode::decode(extra_ic_state); |
5031 } | 5024 } |
5032 | 5025 |
5033 static inline ExtraICState ComputeExtraICState( | 5026 static inline ExtraICState ComputeExtraICState( |
5034 KeyedAccessStoreMode store_mode, | 5027 KeyedAccessStoreMode store_mode, |
5035 StrictModeFlag strict_mode) { | 5028 StrictModeFlag strict_mode) { |
5036 return ExtraICStateKeyedAccessStoreMode::encode(store_mode) | | 5029 return ExtraICStateKeyedAccessStoreMode::encode(store_mode) | |
5037 ExtraICStateStrictMode::encode(strict_mode); | 5030 ExtraICStateStrictMode::encode(strict_mode); |
5038 } | 5031 } |
5039 | 5032 |
5040 static inline ExtraICState ComputeExtraICState(StubHolder stub_holder) { | |
5041 return ExtraICStateStubHolder::encode(stub_holder); | |
5042 } | |
5043 | |
5044 // Flags operations. | 5033 // Flags operations. |
5045 static inline Flags ComputeFlags( | 5034 static inline Flags ComputeFlags( |
5046 Kind kind, | 5035 Kind kind, |
5047 InlineCacheState ic_state = UNINITIALIZED, | 5036 InlineCacheState ic_state = UNINITIALIZED, |
5048 ExtraICState extra_ic_state = kNoExtraICState, | 5037 ExtraICState extra_ic_state = kNoExtraICState, |
5049 StubType type = NORMAL, | 5038 StubType type = NORMAL, |
5050 int argc = -1, | 5039 int argc = -1, |
5051 InlineCacheHolderFlag holder = OWN_MAP); | 5040 InlineCacheHolderFlag holder = OWN_MAP); |
5052 | 5041 |
5053 static inline Flags ComputeMonomorphicFlags( | 5042 static inline Flags ComputeMonomorphicFlags( |
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10243 } else { | 10232 } else { |
10244 value &= ~(1 << bit_position); | 10233 value &= ~(1 << bit_position); |
10245 } | 10234 } |
10246 return value; | 10235 return value; |
10247 } | 10236 } |
10248 }; | 10237 }; |
10249 | 10238 |
10250 } } // namespace v8::internal | 10239 } } // namespace v8::internal |
10251 | 10240 |
10252 #endif // V8_OBJECTS_H_ | 10241 #endif // V8_OBJECTS_H_ |
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