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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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| 36 | 36 |
| 37 namespace v8 { | 37 namespace v8 { |
| 38 namespace internal { | 38 namespace internal { |
| 39 | 39 |
| 40 | 40 |
| 41 // ----------------------------------------------------------------------------- | 41 // ----------------------------------------------------------------------------- |
| 42 // Implementation of Assembler | 42 // Implementation of Assembler |
| 43 | 43 |
| 44 | 44 |
| 45 static const byte kCallOpcode = 0xE8; | 45 static const byte kCallOpcode = 0xE8; |
| 46 static const int kNoCodeAgeSequenceLength = 6; | 46 // The length of pushq(rbp), movp(rbp, rsp), Push(rsi) and Push(rdi). |
| 47 static const int kNoCodeAgeSequenceLength = kPointerSize == kInt64Size ? 6 : 17; |
| 47 | 48 |
| 48 | 49 |
| 49 void Assembler::emitl(uint32_t x) { | 50 void Assembler::emitl(uint32_t x) { |
| 50 Memory::uint32_at(pc_) = x; | 51 Memory::uint32_at(pc_) = x; |
| 51 pc_ += sizeof(uint32_t); | 52 pc_ += sizeof(uint32_t); |
| 52 } | 53 } |
| 53 | 54 |
| 54 | 55 |
| 55 void Assembler::emitp(void* x, RelocInfo::Mode rmode) { | 56 void Assembler::emitp(void* x, RelocInfo::Mode rmode) { |
| 56 uintptr_t value = reinterpret_cast<uintptr_t>(x); | 57 uintptr_t value = reinterpret_cast<uintptr_t>(x); |
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| 560 ASSERT(len_ == 1 || len_ == 2); | 561 ASSERT(len_ == 1 || len_ == 2); |
| 561 int32_t* p = reinterpret_cast<int32_t*>(&buf_[len_]); | 562 int32_t* p = reinterpret_cast<int32_t*>(&buf_[len_]); |
| 562 *p = disp; | 563 *p = disp; |
| 563 len_ += sizeof(int32_t); | 564 len_ += sizeof(int32_t); |
| 564 } | 565 } |
| 565 | 566 |
| 566 | 567 |
| 567 } } // namespace v8::internal | 568 } } // namespace v8::internal |
| 568 | 569 |
| 569 #endif // V8_X64_ASSEMBLER_X64_INL_H_ | 570 #endif // V8_X64_ASSEMBLER_X64_INL_H_ |
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