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1 // Copyright 2015 the V8 project authors. All rights reserved. | 1 // Copyright 2015 the V8 project authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #ifndef V8_INTERPRETER_INTERPRETER_H_ | 5 #ifndef V8_INTERPRETER_INTERPRETER_H_ |
6 #define V8_INTERPRETER_INTERPRETER_H_ | 6 #define V8_INTERPRETER_INTERPRETER_H_ |
7 | 7 |
8 #include <memory> | 8 #include <memory> |
9 | 9 |
10 // Clients of this interface shouldn't depend on lots of interpreter internals. | 10 // Clients of this interface shouldn't depend on lots of interpreter internals. |
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55 | 55 |
56 Address dispatch_table_address() { | 56 Address dispatch_table_address() { |
57 return reinterpret_cast<Address>(&dispatch_table_[0]); | 57 return reinterpret_cast<Address>(&dispatch_table_[0]); |
58 } | 58 } |
59 | 59 |
60 Address bytecode_dispatch_counters_table() { | 60 Address bytecode_dispatch_counters_table() { |
61 return reinterpret_cast<Address>(bytecode_dispatch_counters_table_.get()); | 61 return reinterpret_cast<Address>(bytecode_dispatch_counters_table_.get()); |
62 } | 62 } |
63 | 63 |
64 // TODO(ignition): Tune code size multiplier. | 64 // TODO(ignition): Tune code size multiplier. |
65 static const int kCodeSizeMultiplier = 32; | 65 static const int kCodeSizeMultiplier = 24; |
66 | 66 |
67 private: | 67 private: |
68 // In the case of bytecodes that share handler implementations, copy the code | 68 // In the case of bytecodes that share handler implementations, copy the code |
69 // into the bytecode's dispatcher table entry and return true. | 69 // into the bytecode's dispatcher table entry and return true. |
70 bool ReuseExistingHandler(Bytecode bytecode, OperandScale operand_scale); | 70 bool ReuseExistingHandler(Bytecode bytecode, OperandScale operand_scale); |
71 | 71 |
72 // Generates handler for given |bytecode| and |operand_scale| | 72 // Generates handler for given |bytecode| and |operand_scale| |
73 // and installs it into the dispatch table. | 73 // and installs it into the dispatch table. |
74 void InstallBytecodeHandler(Isolate* isolate, Bytecode bytecode, | 74 void InstallBytecodeHandler(Isolate* isolate, Bytecode bytecode, |
75 OperandScale operand_scale); | 75 OperandScale operand_scale); |
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92 std::unique_ptr<uintptr_t[]> bytecode_dispatch_counters_table_; | 92 std::unique_ptr<uintptr_t[]> bytecode_dispatch_counters_table_; |
93 | 93 |
94 DISALLOW_COPY_AND_ASSIGN(Interpreter); | 94 DISALLOW_COPY_AND_ASSIGN(Interpreter); |
95 }; | 95 }; |
96 | 96 |
97 } // namespace interpreter | 97 } // namespace interpreter |
98 } // namespace internal | 98 } // namespace internal |
99 } // namespace v8 | 99 } // namespace v8 |
100 | 100 |
101 #endif // V8_INTERPRETER_INTERPRETER_H_ | 101 #endif // V8_INTERPRETER_INTERPRETER_H_ |
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