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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 | |
3 // found in the LICENSE file. | |
4 | |
5 #ifndef V8_INTERPRETER_BYTECODE_DECODER_H_ | |
6 #define V8_INTERPRETER_BYTECODE_DECODER_H_ | |
7 | |
8 #include <iosfwd> | |
9 | |
10 #include "src/interpreter/bytecode-register.h" | |
11 #include "src/interpreter/bytecodes.h" | |
12 | |
13 namespace v8 { | |
14 namespace internal { | |
15 namespace interpreter { | |
16 | |
17 class BytecodeDecoder final { | |
18 public: | |
19 // Decodes a register operand in a byte array. | |
20 static Register DecodeRegisterOperand(const uint8_t* operand_start, | |
21 OperandType operand_type, | |
22 OperandScale operand_scale); | |
23 | |
24 // Decodes a signed operand in a byte array. | |
25 static int32_t DecodeSignedOperand(const uint8_t* operand_start, | |
26 OperandType operand_type, | |
27 OperandScale operand_scale); | |
28 | |
29 // Decodes an unsigned operand in a byte array. | |
30 static uint32_t DecodeUnsignedOperand(const uint8_t* operand_start, | |
31 OperandType operand_type, | |
32 OperandScale operand_scale); | |
33 | |
34 // Decode a single bytecode and operands to |os|. | |
35 static std::ostream& Decode(std::ostream& os, const uint8_t* bytecode_start, | |
36 int number_of_parameters); | |
37 }; | |
38 | |
39 } // namespace interpreter | |
40 } // namespace internal | |
41 } // namespace v8 | |
42 | |
43 #endif // V8_INTERPRETER_BYTECODE_DECODER_H_ | |
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