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/*
* Copyright (C) 2011, 2016 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 "JSCJSValue.h"
#include "Opcode.h"
#include <array>
namespace JSC {
class VM;
struct Instruction;
#if !ENABLE(JIT)
typedef OpcodeID LLIntCode;
#else
typedef void (*LLIntCode)();
#endif
namespace LLInt {
struct OpcodeStats {
OpcodeID id;
size_t count { 0 };
size_t slowPathCount { 0 };
};
typedef std::array<OpcodeStats, numOpcodeIDs> OpcodeStatsArray;
class Data {
public:
static void performAssertions(VM&);
static OpcodeStats& opcodeStats(OpcodeID id) { return (*s_opcodeStatsArray)[id]; }
JS_EXPORT_PRIVATE static void finalizeStats();
static void dumpStats();
static void loadStats();
private:
static void ensureStats();
static void resetStats();
static void saveStats();
static Instruction* s_exceptionInstructions;
static Opcode s_opcodeMap[numOpcodeIDs];
static OpcodeStatsArray* s_opcodeStatsArray;
friend void initialize();
friend Instruction* exceptionInstructions();
friend Opcode* opcodeMap();
friend Opcode getOpcode(OpcodeID);
friend void* getCodePtr(OpcodeID);
};
void initialize();
inline Instruction* exceptionInstructions()
{
return Data::s_exceptionInstructions;
}
inline Opcode* opcodeMap()
{
return Data::s_opcodeMap;
}
inline Opcode getOpcode(OpcodeID id)
{
#if ENABLE(COMPUTED_GOTO_OPCODES)
return Data::s_opcodeMap[id];
#else
return static_cast<Opcode>(id);
#endif
}
ALWAYS_INLINE void* getCodePtr(OpcodeID id)
{
return reinterpret_cast<void*>(getOpcode(id));
}
#if ENABLE(JIT)
ALWAYS_INLINE LLIntCode getCodeFunctionPtr(OpcodeID codeId)
{
return reinterpret_cast<LLIntCode>(getCodePtr(codeId));
}
#endif
ALWAYS_INLINE void* getCodePtr(JSC::EncodedJSValue glueHelper())
{
return bitwise_cast<void*>(glueHelper);
}
} } // namespace JSC::LLInt
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