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1 // Copyright 2006-2008 the V8 project authors. All rights reserved. | 1 // Copyright 2006-2008 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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72 static const int kArgcOffset = +5 * kPointerSize; | 72 static const int kArgcOffset = +5 * kPointerSize; |
73 static const int kArgvOffset = +6 * kPointerSize; | 73 static const int kArgvOffset = +6 * kPointerSize; |
74 }; | 74 }; |
75 | 75 |
76 | 76 |
77 class ExitFrameConstants : public AllStatic { | 77 class ExitFrameConstants : public AllStatic { |
78 public: | 78 public: |
79 static const int kDebugMarkOffset = -2 * kPointerSize; | 79 static const int kDebugMarkOffset = -2 * kPointerSize; |
80 static const int kSPOffset = -1 * kPointerSize; | 80 static const int kSPOffset = -1 * kPointerSize; |
81 | 81 |
82 // Let the parameters pointer for exit frames point just below the | |
83 // frame structure on the stack (frame pointer and return address). | |
84 static const int kPPDisplacement = +2 * kPointerSize; | |
85 | |
86 static const int kCallerFPOffset = 0 * kPointerSize; | 82 static const int kCallerFPOffset = 0 * kPointerSize; |
87 static const int kCallerPCOffset = +1 * kPointerSize; | 83 static const int kCallerPCOffset = +1 * kPointerSize; |
| 84 |
| 85 // FP-relative displacement of the caller's SP. It points just |
| 86 // below the saved PC. |
| 87 static const int kCallerSPDisplacement = +2 * kPointerSize; |
88 }; | 88 }; |
89 | 89 |
90 | 90 |
91 class StandardFrameConstants : public AllStatic { | 91 class StandardFrameConstants : public AllStatic { |
92 public: | 92 public: |
93 static const int kExpressionsOffset = -3 * kPointerSize; | 93 static const int kExpressionsOffset = -3 * kPointerSize; |
94 static const int kMarkerOffset = -2 * kPointerSize; | 94 static const int kMarkerOffset = -2 * kPointerSize; |
95 static const int kContextOffset = -1 * kPointerSize; | 95 static const int kContextOffset = -1 * kPointerSize; |
96 static const int kCallerFPOffset = 0 * kPointerSize; | 96 static const int kCallerFPOffset = 0 * kPointerSize; |
97 static const int kCallerPCOffset = +1 * kPointerSize; | 97 static const int kCallerPCOffset = +1 * kPointerSize; |
98 static const int kCallerSPOffset = +2 * kPointerSize; | 98 static const int kCallerSPOffset = +2 * kPointerSize; |
99 }; | 99 }; |
100 | 100 |
101 | 101 |
102 class JavaScriptFrameConstants : public AllStatic { | 102 class JavaScriptFrameConstants : public AllStatic { |
103 public: | 103 public: |
104 // FP-relative. | 104 // FP-relative. |
105 static const int kLocal0Offset = StandardFrameConstants::kExpressionsOffset; | 105 static const int kLocal0Offset = StandardFrameConstants::kExpressionsOffset; |
106 static const int kSavedRegistersOffset = +2 * kPointerSize; | 106 static const int kSavedRegistersOffset = +2 * kPointerSize; |
107 static const int kFunctionOffset = StandardFrameConstants::kMarkerOffset; | 107 static const int kFunctionOffset = StandardFrameConstants::kMarkerOffset; |
108 | 108 |
109 // CallerSP-relative (aka PP-relative) | 109 // Caller SP-relative. |
110 static const int kParam0Offset = -2 * kPointerSize; | 110 static const int kParam0Offset = -2 * kPointerSize; |
111 static const int kReceiverOffset = -1 * kPointerSize; | 111 static const int kReceiverOffset = -1 * kPointerSize; |
112 }; | 112 }; |
113 | 113 |
114 | 114 |
115 class ArgumentsAdaptorFrameConstants : public AllStatic { | 115 class ArgumentsAdaptorFrameConstants : public AllStatic { |
116 public: | 116 public: |
117 static const int kLengthOffset = StandardFrameConstants::kExpressionsOffset; | 117 static const int kLengthOffset = StandardFrameConstants::kExpressionsOffset; |
118 }; | 118 }; |
119 | 119 |
120 | 120 |
121 class InternalFrameConstants : public AllStatic { | 121 class InternalFrameConstants : public AllStatic { |
122 public: | 122 public: |
123 static const int kCodeOffset = StandardFrameConstants::kExpressionsOffset; | 123 static const int kCodeOffset = StandardFrameConstants::kExpressionsOffset; |
124 }; | 124 }; |
125 | 125 |
126 | 126 |
127 inline Object* JavaScriptFrame::function_slot_object() const { | 127 inline Object* JavaScriptFrame::function_slot_object() const { |
128 const int offset = JavaScriptFrameConstants::kFunctionOffset; | 128 const int offset = JavaScriptFrameConstants::kFunctionOffset; |
129 return Memory::Object_at(fp() + offset); | 129 return Memory::Object_at(fp() + offset); |
130 } | 130 } |
131 | 131 |
132 | 132 |
133 } } // namespace v8::internal | 133 } } // namespace v8::internal |
134 | 134 |
135 #endif // V8_IA32_FRAMES_IA32_H_ | 135 #endif // V8_IA32_FRAMES_IA32_H_ |
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