// Copyright 2015 the V8 project authors. All rights reserved. // Use of this source code is governed by a BSD-style license that can be // found in the LICENSE file. #ifndef V8_INTERPRETER_BYTECODE_DECODER_H_ #define V8_INTERPRETER_BYTECODE_DECODER_H_ #include <iosfwd> #include "src/common/globals.h" #include "src/interpreter/bytecode-register.h" #include "src/interpreter/bytecodes.h" namespace v8 { namespace internal { namespace interpreter { class V8_EXPORT_PRIVATE BytecodeDecoder final { public: // Decodes a register operand in a byte array. static Register DecodeRegisterOperand(Address operand_start, OperandType operand_type, OperandScale operand_scale); // Decodes a register list operand in a byte array. static RegisterList DecodeRegisterListOperand(Address operand_start, uint32_t count, OperandType operand_type, OperandScale operand_scale); // Decodes a signed operand in a byte array. static int32_t DecodeSignedOperand(Address operand_start, OperandType operand_type, OperandScale operand_scale); // Decodes an unsigned operand in a byte array. static uint32_t DecodeUnsignedOperand(Address operand_start, OperandType operand_type, OperandScale operand_scale); // Decode a single bytecode and operands to |os|. static std::ostream& Decode(std::ostream& os, const uint8_t* bytecode_start, int number_of_parameters); }; } // namespace interpreter } // namespace internal } // namespace v8 #endif // V8_INTERPRETER_BYTECODE_DECODER_H_