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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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77 | 77 |
78 // Add extra in-memory elements to the top of the frame to match an actual | 78 // Add extra in-memory elements to the top of the frame to match an actual |
79 // frame (eg, the frame after an exception handler is pushed). No code is | 79 // frame (eg, the frame after an exception handler is pushed). No code is |
80 // emitted. | 80 // emitted. |
81 void Adjust(int count); | 81 void Adjust(int count); |
82 | 82 |
83 // Forget elements from the top of the frame to match an actual frame (eg, | 83 // Forget elements from the top of the frame to match an actual frame (eg, |
84 // the frame after a runtime call). No code is emitted. | 84 // the frame after a runtime call). No code is emitted. |
85 void Forget(int count); | 85 void Forget(int count); |
86 | 86 |
| 87 // Forget count elements from the top of the frame without adjusting |
| 88 // the stack pointer downward. This is used, for example, before |
| 89 // merging frames at break, continue, and return targets. |
| 90 void ForgetElements(int count); |
| 91 |
87 // Spill all values from the frame to memory. | 92 // Spill all values from the frame to memory. |
88 void SpillAll(); | 93 void SpillAll(); |
89 | 94 |
90 // Spill all occurrences of a specific register from the frame. | 95 // Spill all occurrences of a specific register from the frame. |
91 void Spill(Register reg); | 96 void Spill(Register reg); |
92 | 97 |
93 // Spill all occurrences of an arbitrary register if possible. Return the | 98 // Spill all occurrences of an arbitrary register if possible. Return the |
94 // register spilled or no_reg if it was not possible to free any register | 99 // register spilled or no_reg if it was not possible to free any register |
95 // (ie, they all have frame-external references). | 100 // (ie, they all have frame-external references). |
96 Register SpillAnyRegister(); | 101 Register SpillAnyRegister(); |
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451 | 456 |
452 bool Equals(VirtualFrame* other); | 457 bool Equals(VirtualFrame* other); |
453 | 458 |
454 friend class JumpTarget; | 459 friend class JumpTarget; |
455 }; | 460 }; |
456 | 461 |
457 | 462 |
458 } } // namespace v8::internal | 463 } } // namespace v8::internal |
459 | 464 |
460 #endif // V8_VIRTUAL_FRAME_ARM_H_ | 465 #endif // V8_VIRTUAL_FRAME_ARM_H_ |
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