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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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78 | 78 |
79 static const int kCallerFPOffset = +0 * kPointerSize; | 79 static const int kCallerFPOffset = +0 * kPointerSize; |
80 static const int kCallerPCOffset = +1 * kPointerSize; | 80 static const int kCallerPCOffset = +1 * kPointerSize; |
81 | 81 |
82 // FP-relative displacement of the caller's SP. It points just | 82 // FP-relative displacement of the caller's SP. It points just |
83 // below the saved PC. | 83 // below the saved PC. |
84 static const int kCallerSPDisplacement = +2 * kPointerSize; | 84 static const int kCallerSPDisplacement = +2 * kPointerSize; |
85 }; | 85 }; |
86 | 86 |
87 | 87 |
88 class StandardFrameConstants : public AllStatic { | |
89 public: | |
90 // Fixed part of the frame consists of return address, caller fp, | |
91 // context and function. | |
92 static const int kFixedFrameSize = 4 * kPointerSize; | |
93 static const int kExpressionsOffset = -3 * kPointerSize; | |
94 static const int kMarkerOffset = -2 * kPointerSize; | |
95 static const int kContextOffset = -1 * kPointerSize; | |
96 static const int kCallerFPOffset = 0 * kPointerSize; | |
97 static const int kCallerPCOffset = +1 * kPointerSize; | |
98 static const int kCallerSPOffset = +2 * kPointerSize; | |
99 }; | |
100 | |
101 | |
102 class JavaScriptFrameConstants : public AllStatic { | 88 class JavaScriptFrameConstants : public AllStatic { |
103 public: | 89 public: |
104 // FP-relative. | 90 // FP-relative. |
105 static const int kLocal0Offset = StandardFrameConstants::kExpressionsOffset; | 91 static const int kLocal0Offset = StandardFrameConstants::kExpressionsOffset; |
106 static const int kLastParameterOffset = +2 * kPointerSize; | 92 static const int kLastParameterOffset = +2 * kPointerSize; |
107 static const int kFunctionOffset = StandardFrameConstants::kMarkerOffset; | 93 static const int kFunctionOffset = StandardFrameConstants::kMarkerOffset; |
108 | 94 |
109 // Caller SP-relative. | 95 // Caller SP-relative. |
110 static const int kParam0Offset = -2 * kPointerSize; | 96 static const int kParam0Offset = -2 * kPointerSize; |
111 static const int kReceiverOffset = -1 * kPointerSize; | 97 static const int kReceiverOffset = -1 * kPointerSize; |
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127 | 113 |
128 | 114 |
129 inline Object* JavaScriptFrame::function_slot_object() const { | 115 inline Object* JavaScriptFrame::function_slot_object() const { |
130 const int offset = JavaScriptFrameConstants::kFunctionOffset; | 116 const int offset = JavaScriptFrameConstants::kFunctionOffset; |
131 return Memory::Object_at(fp() + offset); | 117 return Memory::Object_at(fp() + offset); |
132 } | 118 } |
133 | 119 |
134 } } // namespace v8::internal | 120 } } // namespace v8::internal |
135 | 121 |
136 #endif // V8_X64_FRAMES_X64_H_ | 122 #endif // V8_X64_FRAMES_X64_H_ |
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