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// 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_