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