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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 VM_INSTRUCTIONS_MIPS_H_ | 6 #ifndef VM_INSTRUCTIONS_MIPS_H_ |
7 #define VM_INSTRUCTIONS_MIPS_H_ | 7 #define VM_INSTRUCTIONS_MIPS_H_ |
8 | 8 |
9 #ifndef VM_INSTRUCTIONS_H_ | 9 #ifndef VM_INSTRUCTIONS_H_ |
10 #error Do not include instructions_mips.h directly; use instructions.h instead. | 10 #error Do not include instructions_mips.h directly; use instructions.h instead. |
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92 bool IsValid() const; | 92 bool IsValid() const; |
93 uword TargetAddress() const; | 93 uword TargetAddress() const; |
94 void SetTargetAddress(uword target_address) const; | 94 void SetTargetAddress(uword target_address) const; |
95 | 95 |
96 private: | 96 private: |
97 const uword pc_; | 97 const uword pc_; |
98 | 98 |
99 DISALLOW_COPY_AND_ASSIGN(JumpPattern); | 99 DISALLOW_COPY_AND_ASSIGN(JumpPattern); |
100 }; | 100 }; |
101 | 101 |
| 102 |
| 103 class ReturnPattern : public ValueObject { |
| 104 public: |
| 105 explicit ReturnPattern(uword pc); |
| 106 |
| 107 // jr(RA) = 1 |
| 108 static const int kLengthInBytes = 1 * Instr::kInstrSize; |
| 109 |
| 110 int pattern_length_in_bytes() const { |
| 111 return kLengthInBytes; |
| 112 } |
| 113 |
| 114 bool IsValid() const; |
| 115 |
| 116 private: |
| 117 const uword pc_; |
| 118 }; |
| 119 |
102 } // namespace dart | 120 } // namespace dart |
103 | 121 |
104 #endif // VM_INSTRUCTIONS_MIPS_H_ | 122 #endif // VM_INSTRUCTIONS_MIPS_H_ |
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