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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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49 | 49 |
50 | 50 |
51 StackFrame::Type ExitFrame::GetStateForFramePointer(Address fp, State* state) { | 51 StackFrame::Type ExitFrame::GetStateForFramePointer(Address fp, State* state) { |
52 if (fp == 0) return NONE; | 52 if (fp == 0) return NONE; |
53 // Compute the stack pointer. | 53 // Compute the stack pointer. |
54 Address sp = Memory::Address_at(fp + ExitFrameConstants::kSPOffset); | 54 Address sp = Memory::Address_at(fp + ExitFrameConstants::kSPOffset); |
55 // Fill in the state. | 55 // Fill in the state. |
56 state->fp = fp; | 56 state->fp = fp; |
57 state->sp = sp; | 57 state->sp = sp; |
58 state->pc_address = reinterpret_cast<Address*>(sp - 1 * kPointerSize); | 58 state->pc_address = reinterpret_cast<Address*>(sp - 1 * kPointerSize); |
59 // Determine frame type. | 59 return EXIT; |
60 if (Memory::Address_at(fp + ExitFrameConstants::kDebugMarkOffset) != 0) { | |
61 return EXIT_DEBUG; | |
62 } else { | |
63 return EXIT; | |
64 } | |
65 } | 60 } |
66 | 61 |
67 | 62 |
68 void ExitFrame::Iterate(ObjectVisitor* v) const { | 63 void ExitFrame::Iterate(ObjectVisitor* v) const { |
69 // Exit frames on IA-32 do not contain any pointers. The arguments | 64 v->VisitPointer(&code_slot()); |
70 // are traversed as part of the expression stack of the calling | 65 // The arguments are traversed as part of the expression stack of |
71 // frame. | 66 // the calling frame. |
72 } | 67 } |
73 | 68 |
74 | 69 |
75 int JavaScriptFrame::GetProvidedParametersCount() const { | 70 int JavaScriptFrame::GetProvidedParametersCount() const { |
76 return ComputeParametersCount(); | 71 return ComputeParametersCount(); |
77 } | 72 } |
78 | 73 |
79 | 74 |
80 Address JavaScriptFrame::GetCallerStackPointer() const { | 75 Address JavaScriptFrame::GetCallerStackPointer() const { |
81 int arguments; | 76 int arguments; |
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107 | 102 |
108 | 103 |
109 Address InternalFrame::GetCallerStackPointer() const { | 104 Address InternalFrame::GetCallerStackPointer() const { |
110 // Internal frames have no arguments. The stack pointer of the | 105 // Internal frames have no arguments. The stack pointer of the |
111 // caller is at a fixed offset from the frame pointer. | 106 // caller is at a fixed offset from the frame pointer. |
112 return fp() + StandardFrameConstants::kCallerSPOffset; | 107 return fp() + StandardFrameConstants::kCallerSPOffset; |
113 } | 108 } |
114 | 109 |
115 | 110 |
116 } } // namespace v8::internal | 111 } } // namespace v8::internal |
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