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| 1 // Copyright (c) 2013, the Dart project authors. Please see the AUTHORS file | 1 // Copyright (c) 2013, the Dart project authors. Please see the AUTHORS file |
| 2 // for details. All rights reserved. Use of this source code is governed by a | 2 // for details. All rights reserved. Use of this source code is governed by a |
| 3 // BSD-style license that can be found in the LICENSE file. | 3 // BSD-style license that can be found in the LICENSE file. |
| 4 // Classes that describe assembly patterns as used by inline caches. | 4 // Classes that describe assembly patterns as used by inline caches. |
| 5 | 5 |
| 6 #ifndef RUNTIME_VM_INSTRUCTIONS_ARM_H_ | 6 #ifndef RUNTIME_VM_INSTRUCTIONS_ARM_H_ |
| 7 #define RUNTIME_VM_INSTRUCTIONS_ARM_H_ | 7 #define RUNTIME_VM_INSTRUCTIONS_ARM_H_ |
| 8 | 8 |
| 9 #ifndef RUNTIME_VM_INSTRUCTIONS_H_ | 9 #ifndef RUNTIME_VM_INSTRUCTIONS_H_ |
| 10 #error Do not include instructions_arm.h directly; use instructions.h instead. | 10 #error Do not include instructions_arm.h directly; use instructions.h instead. |
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| 114 }; | 114 }; |
| 115 | 115 |
| 116 | 116 |
| 117 class ReturnPattern : public ValueObject { | 117 class ReturnPattern : public ValueObject { |
| 118 public: | 118 public: |
| 119 explicit ReturnPattern(uword pc); | 119 explicit ReturnPattern(uword pc); |
| 120 | 120 |
| 121 // bx_lr = 1. | 121 // bx_lr = 1. |
| 122 static const int kLengthInBytes = 1 * Instr::kInstrSize; | 122 static const int kLengthInBytes = 1 * Instr::kInstrSize; |
| 123 | 123 |
| 124 int pattern_length_in_bytes() const { | 124 int pattern_length_in_bytes() const { return kLengthInBytes; } |
| 125 return kLengthInBytes; | |
| 126 } | |
| 127 | 125 |
| 128 bool IsValid() const; | 126 bool IsValid() const; |
| 129 | 127 |
| 130 private: | 128 private: |
| 131 const uword pc_; | 129 const uword pc_; |
| 132 }; | 130 }; |
| 133 | 131 |
| 134 } // namespace dart | 132 } // namespace dart |
| 135 | 133 |
| 136 #endif // RUNTIME_VM_INSTRUCTIONS_ARM_H_ | 134 #endif // RUNTIME_VM_INSTRUCTIONS_ARM_H_ |
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