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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 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
| 3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
| 4 | 4 |
| 5 #ifndef V8_FRAMES_H_ | 5 #ifndef V8_FRAMES_H_ |
| 6 #define V8_FRAMES_H_ | 6 #define V8_FRAMES_H_ |
| 7 | 7 |
| 8 #include "src/allocation.h" | 8 #include "src/allocation.h" |
| 9 #include "src/handles.h" | 9 #include "src/handles.h" |
| 10 #include "src/safepoint-table.h" | 10 #include "src/safepoint-table.h" |
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| 62 static const int kInnerPointerToCodeCacheSize = 1024; | 62 static const int kInnerPointerToCodeCacheSize = 1024; |
| 63 InnerPointerToCodeCacheEntry cache_[kInnerPointerToCodeCacheSize]; | 63 InnerPointerToCodeCacheEntry cache_[kInnerPointerToCodeCacheSize]; |
| 64 | 64 |
| 65 DISALLOW_COPY_AND_ASSIGN(InnerPointerToCodeCache); | 65 DISALLOW_COPY_AND_ASSIGN(InnerPointerToCodeCache); |
| 66 }; | 66 }; |
| 67 | 67 |
| 68 | 68 |
| 69 class StackHandlerConstants : public AllStatic { | 69 class StackHandlerConstants : public AllStatic { |
| 70 public: | 70 public: |
| 71 static const int kNextOffset = 0 * kPointerSize; | 71 static const int kNextOffset = 0 * kPointerSize; |
| 72 static const int kCodeOffset = 1 * kPointerSize; | 72 static const int kStateOffset = 1 * kPointerSize; |
| 73 static const int kStateOffset = 2 * kPointerSize; | |
| 74 #if V8_TARGET_LITTLE_ENDIAN || !V8_HOST_ARCH_64_BIT | 73 #if V8_TARGET_LITTLE_ENDIAN || !V8_HOST_ARCH_64_BIT |
| 75 static const int kStateIntOffset = kStateOffset; | 74 static const int kStateIntOffset = kStateOffset; |
| 76 #else | 75 #else |
| 77 static const int kStateIntOffset = kStateOffset + kIntSize; | 76 static const int kStateIntOffset = kStateOffset + kIntSize; |
| 78 #endif | 77 #endif |
| 79 static const int kContextOffset = 3 * kPointerSize; | 78 static const int kContextOffset = 2 * kPointerSize; |
| 80 static const int kFPOffset = 4 * kPointerSize; | 79 static const int kFPOffset = 3 * kPointerSize; |
| 81 | 80 |
| 82 static const int kSize = kFPOffset + kFPOnStackSize; | 81 static const int kSize = kFPOffset + kFPOnStackSize; |
| 83 static const int kSlotCount = kSize >> kPointerSizeLog2; | 82 static const int kSlotCount = kSize >> kPointerSizeLog2; |
| 84 }; | 83 }; |
| 85 | 84 |
| 86 | 85 |
| 87 class StackHandler BASE_EMBEDDED { | 86 class StackHandler BASE_EMBEDDED { |
| 88 public: | 87 public: |
| 89 enum Kind { | 88 enum Kind { |
| 90 JS_ENTRY, | 89 JS_ENTRY, |
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| 109 inline bool includes(Address address) const; | 108 inline bool includes(Address address) const; |
| 110 | 109 |
| 111 // Garbage collection support. | 110 // Garbage collection support. |
| 112 inline void Iterate(ObjectVisitor* v, Code* holder) const; | 111 inline void Iterate(ObjectVisitor* v, Code* holder) const; |
| 113 | 112 |
| 114 // Conversion support. | 113 // Conversion support. |
| 115 static inline StackHandler* FromAddress(Address address); | 114 static inline StackHandler* FromAddress(Address address); |
| 116 | 115 |
| 117 // Accessors. | 116 // Accessors. |
| 118 inline Context* context() const; | 117 inline Context* context() const; |
| 119 inline Code* code() const; | |
| 120 inline Kind kind() const; | 118 inline Kind kind() const; |
| 121 inline unsigned index() const; | 119 inline unsigned index() const; |
| 122 inline Address frame_pointer() const; | 120 inline Address frame_pointer() const; |
| 123 | 121 |
| 124 // Testers. | 122 // Testers. |
| 125 inline bool is_js_entry() const; | 123 inline bool is_js_entry() const; |
| 126 inline bool is_catch() const; | 124 inline bool is_catch() const; |
| 127 inline bool is_finally() const; | 125 inline bool is_finally() const; |
| 128 | 126 |
| 129 // Generator support to preserve stack handlers. | 127 // Generator support to preserve stack handlers. |
| 130 void Unwind(Isolate* isolate, FixedArray* array, int offset, | 128 void Unwind(Isolate* isolate, FixedArray* array, int offset, |
| 131 int previous_handler_offset) const; | 129 int previous_handler_offset) const; |
| 132 int Rewind(Isolate* isolate, FixedArray* array, int offset, Address fp); | 130 int Rewind(Isolate* isolate, FixedArray* array, int offset, Address fp); |
| 133 | 131 |
| 134 private: | 132 private: |
| 135 inline Object** context_address() const; | 133 inline Object** context_address() const; |
| 136 inline Object** code_address() const; | |
| 137 inline void SetFp(Address slot, Address fp); | 134 inline void SetFp(Address slot, Address fp); |
| 138 | 135 |
| 139 DISALLOW_IMPLICIT_CONSTRUCTORS(StackHandler); | 136 DISALLOW_IMPLICIT_CONSTRUCTORS(StackHandler); |
| 140 }; | 137 }; |
| 141 | 138 |
| 142 | 139 |
| 143 #define STACK_FRAME_TYPE_LIST(V) \ | 140 #define STACK_FRAME_TYPE_LIST(V) \ |
| 144 V(ENTRY, EntryFrame) \ | 141 V(ENTRY, EntryFrame) \ |
| 145 V(ENTRY_CONSTRUCT, EntryConstructFrame) \ | 142 V(ENTRY_CONSTRUCT, EntryConstructFrame) \ |
| 146 V(EXIT, ExitFrame) \ | 143 V(EXIT, ExitFrame) \ |
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| 938 }; | 935 }; |
| 939 | 936 |
| 940 | 937 |
| 941 // Reads all frames on the current stack and copies them into the current | 938 // Reads all frames on the current stack and copies them into the current |
| 942 // zone memory. | 939 // zone memory. |
| 943 Vector<StackFrame*> CreateStackMap(Isolate* isolate, Zone* zone); | 940 Vector<StackFrame*> CreateStackMap(Isolate* isolate, Zone* zone); |
| 944 | 941 |
| 945 } } // namespace v8::internal | 942 } } // namespace v8::internal |
| 946 | 943 |
| 947 #endif // V8_FRAMES_H_ | 944 #endif // V8_FRAMES_H_ |
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