mirror of
https://github.com/darlinghq/darling-JavaScriptCore.git
synced 2025-04-17 22:40:01 +00:00
119 lines
3.1 KiB
C++
119 lines
3.1 KiB
C++
/*
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* Copyright (C) 2011, 2016 Apple Inc. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
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* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
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* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#pragma once
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#include "JSCJSValue.h"
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#include "Opcode.h"
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#include <array>
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namespace JSC {
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class VM;
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struct Instruction;
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#if !ENABLE(JIT)
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typedef OpcodeID LLIntCode;
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#else
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typedef void (*LLIntCode)();
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#endif
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namespace LLInt {
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struct OpcodeStats {
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OpcodeID id;
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size_t count { 0 };
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size_t slowPathCount { 0 };
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};
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typedef std::array<OpcodeStats, numOpcodeIDs> OpcodeStatsArray;
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class Data {
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public:
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static void performAssertions(VM&);
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static OpcodeStats& opcodeStats(OpcodeID id) { return (*s_opcodeStatsArray)[id]; }
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JS_EXPORT_PRIVATE static void finalizeStats();
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static void dumpStats();
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static void loadStats();
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private:
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static void ensureStats();
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static void resetStats();
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static void saveStats();
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static Instruction* s_exceptionInstructions;
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static Opcode s_opcodeMap[numOpcodeIDs];
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static OpcodeStatsArray* s_opcodeStatsArray;
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friend void initialize();
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friend Instruction* exceptionInstructions();
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friend Opcode* opcodeMap();
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friend Opcode getOpcode(OpcodeID);
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friend void* getCodePtr(OpcodeID);
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};
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void initialize();
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inline Instruction* exceptionInstructions()
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{
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return Data::s_exceptionInstructions;
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}
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inline Opcode* opcodeMap()
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{
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return Data::s_opcodeMap;
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}
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inline Opcode getOpcode(OpcodeID id)
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{
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#if ENABLE(COMPUTED_GOTO_OPCODES)
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return Data::s_opcodeMap[id];
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#else
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return static_cast<Opcode>(id);
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#endif
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}
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ALWAYS_INLINE void* getCodePtr(OpcodeID id)
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{
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return reinterpret_cast<void*>(getOpcode(id));
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}
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#if ENABLE(JIT)
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ALWAYS_INLINE LLIntCode getCodeFunctionPtr(OpcodeID codeId)
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{
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return reinterpret_cast<LLIntCode>(getCodePtr(codeId));
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}
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#endif
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ALWAYS_INLINE void* getCodePtr(JSC::EncodedJSValue glueHelper())
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{
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return bitwise_cast<void*>(glueHelper);
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}
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} } // namespace JSC::LLInt
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