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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_BYTECODE_ARRAY_ITERATOR_H_ | 5 #ifndef V8_INTERPRETER_BYTECODE_ARRAY_ITERATOR_H_ |
6 #define V8_INTERPRETER_BYTECODE_ARRAY_ITERATOR_H_ | 6 #define V8_INTERPRETER_BYTECODE_ARRAY_ITERATOR_H_ |
7 | 7 |
8 #include "src/handles.h" | 8 #include "src/handles.h" |
9 #include "src/interpreter/bytecodes.h" | 9 #include "src/interpreter/bytecodes.h" |
10 #include "src/objects.h" | 10 #include "src/objects.h" |
11 #include "src/runtime/runtime.h" | |
12 | 11 |
13 namespace v8 { | 12 namespace v8 { |
14 namespace internal { | 13 namespace internal { |
15 namespace interpreter { | 14 namespace interpreter { |
16 | 15 |
17 class BytecodeArrayIterator { | 16 class BytecodeArrayIterator { |
18 public: | 17 public: |
19 explicit BytecodeArrayIterator(Handle<BytecodeArray> bytecode_array); | 18 explicit BytecodeArrayIterator(Handle<BytecodeArray> bytecode_array); |
20 | 19 |
21 void Advance(); | 20 void Advance(); |
22 bool done() const; | 21 bool done() const; |
23 Bytecode current_bytecode() const; | 22 Bytecode current_bytecode() const; |
24 int current_bytecode_size() const; | 23 int current_bytecode_size() const; |
25 int current_offset() const { return bytecode_offset_; } | 24 int current_offset() const { return bytecode_offset_; } |
26 OperandScale current_operand_scale() const { return operand_scale_; } | 25 OperandScale current_operand_scale() const { return operand_scale_; } |
27 int current_prefix_offset() const { return prefix_offset_; } | 26 int current_prefix_offset() const { return prefix_offset_; } |
28 const Handle<BytecodeArray>& bytecode_array() const { | 27 const Handle<BytecodeArray>& bytecode_array() const { |
29 return bytecode_array_; | 28 return bytecode_array_; |
30 } | 29 } |
31 | 30 |
32 uint32_t GetFlagOperand(int operand_index) const; | 31 uint32_t GetFlagOperand(int operand_index) const; |
33 int32_t GetImmediateOperand(int operand_index) const; | 32 int32_t GetImmediateOperand(int operand_index) const; |
34 uint32_t GetIndexOperand(int operand_index) const; | 33 uint32_t GetIndexOperand(int operand_index) const; |
35 uint32_t GetRegisterCountOperand(int operand_index) const; | 34 uint32_t GetRegisterCountOperand(int operand_index) const; |
36 Register GetRegisterOperand(int operand_index) const; | 35 Register GetRegisterOperand(int operand_index) const; |
37 int GetRegisterOperandRange(int operand_index) const; | 36 int GetRegisterOperandRange(int operand_index) const; |
38 Runtime::FunctionId GetRuntimeIdOperand(int operand_index) const; | 37 uint32_t GetRuntimeIdOperand(int operand_index) const; |
39 Runtime::FunctionId GetIntrinsicIdOperand(int operand_index) const; | |
40 Handle<Object> GetConstantForIndexOperand(int operand_index) const; | 38 Handle<Object> GetConstantForIndexOperand(int operand_index) const; |
41 | 39 |
42 // Returns the absolute offset of the branch target at the current | 40 // Returns the absolute offset of the branch target at the current |
43 // bytecode. It is an error to call this method if the bytecode is | 41 // bytecode. It is an error to call this method if the bytecode is |
44 // not for a jump or conditional jump. | 42 // not for a jump or conditional jump. |
45 int GetJumpTargetOffset() const; | 43 int GetJumpTargetOffset() const; |
46 | 44 |
47 private: | 45 private: |
48 uint32_t GetUnsignedOperand(int operand_index, | 46 uint32_t GetUnsignedOperand(int operand_index, |
49 OperandType operand_type) const; | 47 OperandType operand_type) const; |
50 int32_t GetSignedOperand(int operand_index, OperandType operand_type) const; | 48 int32_t GetSignedOperand(int operand_index, OperandType operand_type) const; |
51 | 49 |
52 void UpdateOperandScale(); | 50 void UpdateOperandScale(); |
53 | 51 |
54 Handle<BytecodeArray> bytecode_array_; | 52 Handle<BytecodeArray> bytecode_array_; |
55 int bytecode_offset_; | 53 int bytecode_offset_; |
56 OperandScale operand_scale_; | 54 OperandScale operand_scale_; |
57 int prefix_offset_; | 55 int prefix_offset_; |
58 | 56 |
59 DISALLOW_COPY_AND_ASSIGN(BytecodeArrayIterator); | 57 DISALLOW_COPY_AND_ASSIGN(BytecodeArrayIterator); |
60 }; | 58 }; |
61 | 59 |
62 } // namespace interpreter | 60 } // namespace interpreter |
63 } // namespace internal | 61 } // namespace internal |
64 } // namespace v8 | 62 } // namespace v8 |
65 | 63 |
66 #endif // V8_INTERPRETER_BYTECODE_GRAPH_ITERATOR_H_ | 64 #endif // V8_INTERPRETER_BYTECODE_GRAPH_ITERATOR_H_ |
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