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1 // Copyright 2008 the V8 project authors. All rights reserved. | 1 // Copyright 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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26 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | 26 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
27 | 27 |
28 #ifndef V8_VIRTUAL_FRAME_INL_H_ | 28 #ifndef V8_VIRTUAL_FRAME_INL_H_ |
29 #define V8_VIRTUAL_FRAME_INL_H_ | 29 #define V8_VIRTUAL_FRAME_INL_H_ |
30 | 30 |
31 #include "virtual-frame.h" | 31 #include "virtual-frame.h" |
32 | 32 |
33 namespace v8 { | 33 namespace v8 { |
34 namespace internal { | 34 namespace internal { |
35 | 35 |
| 36 |
| 37 // On entry to a function, the virtual frame already contains the receiver, |
| 38 // the parameters, and a return address. All frame elements are in memory. |
| 39 VirtualFrame::VirtualFrame() |
| 40 : elements_(parameter_count() + local_count() + kPreallocatedElements), |
| 41 stack_pointer_(parameter_count() + 1) { // 0-based index of TOS. |
| 42 for (int i = 0; i <= stack_pointer_; i++) { |
| 43 elements_.Add(FrameElement::MemoryElement(NumberInfo::kUnknown)); |
| 44 } |
| 45 for (int i = 0; i < RegisterAllocator::kNumRegisters; i++) { |
| 46 register_locations_[i] = kIllegalIndex; |
| 47 } |
| 48 } |
| 49 |
| 50 |
36 // When cloned, a frame is a deep copy of the original. | 51 // When cloned, a frame is a deep copy of the original. |
37 VirtualFrame::VirtualFrame(VirtualFrame* original) | 52 VirtualFrame::VirtualFrame(VirtualFrame* original) |
38 : elements_(original->element_count()), | 53 : elements_(original->element_count()), |
39 stack_pointer_(original->stack_pointer_) { | 54 stack_pointer_(original->stack_pointer_) { |
40 elements_.AddAll(original->elements_); | 55 elements_.AddAll(original->elements_); |
41 // Copy register locations from original. | 56 // Copy register locations from original. |
42 memcpy(®ister_locations_, | 57 memcpy(®ister_locations_, |
43 original->register_locations_, | 58 original->register_locations_, |
44 sizeof(register_locations_)); | 59 sizeof(register_locations_)); |
45 } | 60 } |
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100 for (int i = 0; i < element_count(); i++) { | 115 for (int i = 0; i < element_count(); i++) { |
101 if (!elements_[i].Equals(other->elements_[i])) return false; | 116 if (!elements_[i].Equals(other->elements_[i])) return false; |
102 } | 117 } |
103 | 118 |
104 return true; | 119 return true; |
105 } | 120 } |
106 | 121 |
107 } } // namespace v8::internal | 122 } } // namespace v8::internal |
108 | 123 |
109 #endif // V8_VIRTUAL_FRAME_INL_H_ | 124 #endif // V8_VIRTUAL_FRAME_INL_H_ |
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