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/*
* Copyright (C) 2016 Yusuke Suzuki <utatane.tea@gmail.com>
* Copyright (C) 2016-2017 Apple Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#pragma once
#include "Instruction.h"
#include "Interpreter.h"
#include "LLIntData.h"
#include "UnlinkedCodeBlock.h"
namespace JSC {
inline Opcode Interpreter::getOpcode(OpcodeID id)
{
return LLInt::getOpcode(id);
}
inline OpcodeID Interpreter::getOpcodeID(Opcode opcode)
{
#if ENABLE(COMPUTED_GOTO_OPCODES)
ASSERT(isOpcode(opcode));
#if USE(LLINT_EMBEDDED_OPCODE_ID)
// The OpcodeID is embedded in the int32_t word preceding the location of
// the LLInt code for the opcode (see the EMBED_OPCODE_ID_IF_NEEDED macro
// in LowLevelInterpreter.cpp).
MacroAssemblerCodePtr codePtr(reinterpret_cast<void*>(opcode));
int32_t* opcodeIDAddress = reinterpret_cast<int32_t*>(codePtr.dataLocation()) - 1;
OpcodeID opcodeID = static_cast<OpcodeID>(*opcodeIDAddress);
ASSERT(opcodeID < NUMBER_OF_BYTECODE_IDS);
return opcodeID;
#else
return opcodeIDTable().get(opcode);
#endif // USE(LLINT_EMBEDDED_OPCODE_ID)
#else // not ENABLE(COMPUTED_GOTO_OPCODES)
return opcode;
#endif
}
inline OpcodeID Interpreter::getOpcodeID(const Instruction& instruction)
{
return getOpcodeID(instruction.u.opcode);
}
inline OpcodeID Interpreter::getOpcodeID(const UnlinkedInstruction& instruction)
{
return instruction.u.opcode;
}
} // namespace JSC
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