/* * Copyright (C) 2009 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. */ #include "config.h" #include "Executable.h" #include "BytecodeGenerator.h" #include "CodeBlock.h" #include "JIT.h" #include "Parser.h" namespace JSC { EvalExecutable::~EvalExecutable() { delete m_evalCodeBlock; } ProgramExecutable::~ProgramExecutable() { delete m_programCodeBlock; } FunctionExecutable::~FunctionExecutable() { delete m_codeBlock; } void EvalExecutable::generateBytecode(ScopeChainNode* scopeChainNode) { ScopeChain scopeChain(scopeChainNode); JSGlobalObject* globalObject = scopeChain.globalObject(); ASSERT(!m_evalCodeBlock); m_evalCodeBlock = new EvalCodeBlock(this, globalObject, source().provider(), scopeChain.localDepth()); OwnPtr generator(new BytecodeGenerator(evalNode(), globalObject->debugger(), scopeChain, &m_evalCodeBlock->symbolTable(), m_evalCodeBlock)); generator->generate(); evalNode()->partialDestroyData(); } void ProgramExecutable::generateBytecode(ScopeChainNode* scopeChainNode) { ScopeChain scopeChain(scopeChainNode); JSGlobalObject* globalObject = scopeChain.globalObject(); ASSERT(!m_programCodeBlock); m_programCodeBlock = new ProgramCodeBlock(this, GlobalCode, globalObject, source().provider()); OwnPtr generator(new BytecodeGenerator(programNode(), globalObject->debugger(), scopeChain, &globalObject->symbolTable(), m_programCodeBlock)); generator->generate(); programNode()->destroyData(); } void FunctionExecutable::generateBytecode(ScopeChainNode* scopeChainNode) { body()->reparseDataIfNecessary(scopeChainNode); ScopeChain scopeChain(scopeChainNode); JSGlobalObject* globalObject = scopeChain.globalObject(); ASSERT(!m_codeBlock); m_codeBlock = new FunctionCodeBlock(this, FunctionCode, source().provider(), source().startOffset()); OwnPtr generator(new BytecodeGenerator(body(), globalObject->debugger(), scopeChain, &m_codeBlock->symbolTable(), m_codeBlock)); generator->generate(); body()->destroyData(); } #if ENABLE(JIT) void EvalExecutable::generateJITCode(ScopeChainNode* scopeChainNode) { CodeBlock* codeBlock = &bytecode(scopeChainNode); m_jitCode = JIT::compile(scopeChainNode->globalData, codeBlock); #if !ENABLE(OPCODE_SAMPLING) if (!BytecodeGenerator::dumpsGeneratedCode()) codeBlock->discardBytecode(); #endif } void ProgramExecutable::generateJITCode(ScopeChainNode* scopeChainNode) { CodeBlock* codeBlock = &bytecode(scopeChainNode); m_jitCode = JIT::compile(scopeChainNode->globalData, codeBlock); #if !ENABLE(OPCODE_SAMPLING) if (!BytecodeGenerator::dumpsGeneratedCode()) codeBlock->discardBytecode(); #endif } void FunctionExecutable::generateJITCode(ScopeChainNode* scopeChainNode) { CodeBlock* codeBlock = &bytecode(scopeChainNode); m_jitCode = JIT::compile(scopeChainNode->globalData, codeBlock); #if !ENABLE(OPCODE_SAMPLING) if (!BytecodeGenerator::dumpsGeneratedCode()) codeBlock->discardBytecode(); #endif } #endif bool FunctionExecutable::isHostFunction() const { return m_codeBlock && m_codeBlock->codeType() == NativeCode; } void FunctionExecutable::markAggregate(MarkStack& markStack) { if (m_codeBlock) m_codeBlock->markAggregate(markStack); } ExceptionInfo* FunctionExecutable::reparseExceptionInfo(JSGlobalData* globalData, ScopeChainNode* scopeChainNode, CodeBlock* codeBlock) { RefPtr newFunctionBody = globalData->parser->reparse(globalData, body()); ASSERT(newFunctionBody); newFunctionBody->finishParsing(body()->copyParameters(), body()->parameterCount(), body()->ident()); ScopeChain scopeChain(scopeChainNode); JSGlobalObject* globalObject = scopeChain.globalObject(); OwnPtr newCodeBlock(new FunctionCodeBlock(this, FunctionCode, source().provider(), source().startOffset())); globalData->functionCodeBlockBeingReparsed = newCodeBlock.get(); OwnPtr generator(new BytecodeGenerator(newFunctionBody.get(), globalObject->debugger(), scopeChain, &newCodeBlock->symbolTable(), newCodeBlock.get())); generator->setRegeneratingForExceptionInfo(static_cast(codeBlock)); generator->generate(); ASSERT(newCodeBlock->instructionCount() == codeBlock->instructionCount()); #if ENABLE(JIT) JITCode newJITCode = JIT::compile(globalData, newCodeBlock.get()); ASSERT(newJITCode.size() == generatedJITCode().size()); #endif globalData->functionCodeBlockBeingReparsed = 0; return newCodeBlock->extractExceptionInfo(); } ExceptionInfo* EvalExecutable::reparseExceptionInfo(JSGlobalData* globalData, ScopeChainNode* scopeChainNode, CodeBlock* codeBlock) { RefPtr newEvalBody = globalData->parser->reparse(globalData, evalNode()); ScopeChain scopeChain(scopeChainNode); JSGlobalObject* globalObject = scopeChain.globalObject(); OwnPtr newCodeBlock(new EvalCodeBlock(this, globalObject, source().provider(), scopeChain.localDepth())); OwnPtr generator(new BytecodeGenerator(newEvalBody.get(), globalObject->debugger(), scopeChain, &newCodeBlock->symbolTable(), newCodeBlock.get())); generator->setRegeneratingForExceptionInfo(static_cast(codeBlock)); generator->generate(); ASSERT(newCodeBlock->instructionCount() == codeBlock->instructionCount()); #if ENABLE(JIT) JITCode newJITCode = JIT::compile(globalData, newCodeBlock.get()); ASSERT(newJITCode.size() == generatedJITCode().size()); #endif return newCodeBlock->extractExceptionInfo(); } void FunctionExecutable::recompile(ExecState* exec) { FunctionBodyNode* oldBody = body(); RefPtr newBody = exec->globalData().parser->parse(exec, 0, m_source); ASSERT(newBody); newBody->finishParsing(oldBody->copyParameters(), oldBody->parameterCount(), oldBody->ident()); m_node = newBody; delete m_codeBlock; m_codeBlock = 0; #if ENABLE(JIT) m_jitCode = JITCode(); #endif } #if ENABLE(JIT) FunctionExecutable::FunctionExecutable(ExecState* exec) : m_codeBlock(new NativeCodeBlock(this)) , m_name(Identifier(exec, "")) { m_jitCode = JITCode(JITCode::HostFunction(exec->globalData().jitStubs.ctiNativeCallThunk())); } #endif };