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/*
* Copyright (C) 2008, 2009, 2013, 2014 Apple Inc. All rights reserved.
* Copyright (C) 2008 Cameron Zwarich <cwzwarich@uwaterloo.ca>
*
* 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.
* 3. Neither the name of Apple Inc. ("Apple") nor the names of
* its contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "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 OR ITS 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.
*/
#ifndef Opcode_h
#define Opcode_h
#include "Bytecodes.h"
#include "LLIntOpcode.h"
#include <algorithm>
#include <string.h>
#include <wtf/Assertions.h>
namespace JSC {
#define FOR_EACH_CORE_OPCODE_ID_WITH_EXTENSION(macro, extension__) \
FOR_EACH_BYTECODE_ID(macro) \
extension__
#define FOR_EACH_CORE_OPCODE_ID(macro) \
FOR_EACH_CORE_OPCODE_ID_WITH_EXTENSION(macro, /* No extension */ )
#define FOR_EACH_OPCODE_ID(macro) \
FOR_EACH_CORE_OPCODE_ID_WITH_EXTENSION( \
macro, \
FOR_EACH_LLINT_OPCODE_EXTENSION(macro) \
)
#define OPCODE_ID_ENUM(opcode, length) opcode,
typedef enum { FOR_EACH_OPCODE_ID(OPCODE_ID_ENUM) } OpcodeID;
#undef OPCODE_ID_ENUM
const int maxOpcodeLength = 9;
#if !ENABLE(JIT)
const int numOpcodeIDs = NUMBER_OF_BYTECODE_IDS + NUMBER_OF_CLOOP_BYTECODE_HELPER_IDS + NUMBER_OF_BYTECODE_HELPER_IDS;
#else
const int numOpcodeIDs = NUMBER_OF_BYTECODE_IDS + NUMBER_OF_BYTECODE_HELPER_IDS;
#endif
#define OPCODE_ID_LENGTHS(id, length) const int id##_length = length;
FOR_EACH_OPCODE_ID(OPCODE_ID_LENGTHS);
#undef OPCODE_ID_LENGTHS
#define OPCODE_LENGTH(opcode) opcode##_length
#define OPCODE_ID_LENGTH_MAP(opcode, length) length,
const int opcodeLengths[numOpcodeIDs] = { FOR_EACH_OPCODE_ID(OPCODE_ID_LENGTH_MAP) };
#undef OPCODE_ID_LENGTH_MAP
#define VERIFY_OPCODE_ID(id, size) COMPILE_ASSERT(id <= numOpcodeIDs, ASSERT_THAT_JS_OPCODE_IDS_ARE_VALID);
FOR_EACH_OPCODE_ID(VERIFY_OPCODE_ID);
#undef VERIFY_OPCODE_ID
#if ENABLE(COMPUTED_GOTO_OPCODES)
typedef void* Opcode;
#else
typedef OpcodeID Opcode;
#endif
#define PADDING_STRING " "
#define PADDING_STRING_LENGTH static_cast<unsigned>(strlen(PADDING_STRING))
extern const char* const opcodeNames[];
inline const char* padOpcodeName(OpcodeID op, unsigned width)
{
unsigned pad = width - strlen(opcodeNames[op]);
pad = std::min(pad, PADDING_STRING_LENGTH);
return PADDING_STRING + PADDING_STRING_LENGTH - pad;
}
#undef PADDING_STRING_LENGTH
#undef PADDING_STRING
#if ENABLE(OPCODE_STATS)
struct OpcodeStats {
OpcodeStats();
~OpcodeStats();
static long long opcodeCounts[numOpcodeIDs];
static long long opcodePairCounts[numOpcodeIDs][numOpcodeIDs];
static int lastOpcode;
static void recordInstruction(int opcode);
static void resetLastInstruction();
};
#endif
inline size_t opcodeLength(OpcodeID opcode)
{
switch (opcode) {
#define OPCODE_ID_LENGTHS(id, length) case id: return OPCODE_LENGTH(id);
FOR_EACH_OPCODE_ID(OPCODE_ID_LENGTHS)
#undef OPCODE_ID_LENGTHS
}
RELEASE_ASSERT_NOT_REACHED();
return 0;
}
} // namespace JSC
#endif // Opcode_h
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