| /* |
| * Copyright (C) 2009-2018 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 "BatchedTransitionOptimizer.h" |
| #include "CodeBlock.h" |
| #include "Debugger.h" |
| #include "EvalCodeBlock.h" |
| #include "FunctionCodeBlock.h" |
| #include "JIT.h" |
| #include "JSCInlines.h" |
| #include "LLIntEntrypoint.h" |
| #include "ModuleProgramCodeBlock.h" |
| #include "Parser.h" |
| #include "ProgramCodeBlock.h" |
| #include "TypeProfiler.h" |
| #include "VMInlines.h" |
| #include <wtf/CommaPrinter.h> |
| |
| namespace JSC { |
| |
| const ClassInfo ScriptExecutable::s_info = { "ScriptExecutable", &ExecutableBase::s_info, nullptr, nullptr, CREATE_METHOD_TABLE(ScriptExecutable) }; |
| |
| ScriptExecutable::ScriptExecutable(Structure* structure, VM& vm, const SourceCode& source, bool isInStrictContext, DerivedContextType derivedContextType, bool isInArrowFunctionContext, EvalContextType evalContextType, Intrinsic intrinsic) |
| : ExecutableBase(vm, structure, NUM_PARAMETERS_NOT_COMPILED, intrinsic) |
| , m_features(isInStrictContext ? StrictModeFeature : 0) |
| , m_didTryToEnterInLoop(false) |
| , m_hasCapturedVariables(false) |
| , m_neverInline(false) |
| , m_neverOptimize(false) |
| , m_neverFTLOptimize(false) |
| , m_isArrowFunctionContext(isInArrowFunctionContext) |
| , m_canUseOSRExitFuzzing(true) |
| , m_derivedContextType(static_cast<unsigned>(derivedContextType)) |
| , m_evalContextType(static_cast<unsigned>(evalContextType)) |
| , m_overrideLineNumber(-1) |
| , m_lastLine(-1) |
| , m_endColumn(UINT_MAX) |
| , m_typeProfilingStartOffset(UINT_MAX) |
| , m_typeProfilingEndOffset(UINT_MAX) |
| , m_source(source) |
| { |
| } |
| |
| void ScriptExecutable::destroy(JSCell* cell) |
| { |
| static_cast<ScriptExecutable*>(cell)->ScriptExecutable::~ScriptExecutable(); |
| } |
| |
| void ScriptExecutable::installCode(CodeBlock* codeBlock) |
| { |
| installCode(*codeBlock->vm(), codeBlock, codeBlock->codeType(), codeBlock->specializationKind()); |
| } |
| |
| void ScriptExecutable::installCode(VM& vm, CodeBlock* genericCodeBlock, CodeType codeType, CodeSpecializationKind kind) |
| { |
| if (genericCodeBlock) |
| CODEBLOCK_LOG_EVENT(genericCodeBlock, "installCode", ()); |
| |
| CodeBlock* oldCodeBlock = nullptr; |
| |
| switch (codeType) { |
| case GlobalCode: { |
| ProgramExecutable* executable = jsCast<ProgramExecutable*>(this); |
| ProgramCodeBlock* codeBlock = static_cast<ProgramCodeBlock*>(genericCodeBlock); |
| |
| ASSERT(kind == CodeForCall); |
| |
| oldCodeBlock = ExecutableToCodeBlockEdge::deactivateAndUnwrap(executable->m_programCodeBlock.get()); |
| executable->m_programCodeBlock.setMayBeNull(vm, this, ExecutableToCodeBlockEdge::wrapAndActivate(codeBlock)); |
| break; |
| } |
| |
| case ModuleCode: { |
| ModuleProgramExecutable* executable = jsCast<ModuleProgramExecutable*>(this); |
| ModuleProgramCodeBlock* codeBlock = static_cast<ModuleProgramCodeBlock*>(genericCodeBlock); |
| |
| ASSERT(kind == CodeForCall); |
| |
| oldCodeBlock = ExecutableToCodeBlockEdge::deactivateAndUnwrap(executable->m_moduleProgramCodeBlock.get()); |
| executable->m_moduleProgramCodeBlock.setMayBeNull(vm, this, ExecutableToCodeBlockEdge::wrapAndActivate(codeBlock)); |
| break; |
| } |
| |
| case EvalCode: { |
| EvalExecutable* executable = jsCast<EvalExecutable*>(this); |
| EvalCodeBlock* codeBlock = static_cast<EvalCodeBlock*>(genericCodeBlock); |
| |
| ASSERT(kind == CodeForCall); |
| |
| oldCodeBlock = ExecutableToCodeBlockEdge::deactivateAndUnwrap(executable->m_evalCodeBlock.get()); |
| executable->m_evalCodeBlock.setMayBeNull(vm, this, ExecutableToCodeBlockEdge::wrapAndActivate(codeBlock)); |
| break; |
| } |
| |
| case FunctionCode: { |
| FunctionExecutable* executable = jsCast<FunctionExecutable*>(this); |
| FunctionCodeBlock* codeBlock = static_cast<FunctionCodeBlock*>(genericCodeBlock); |
| |
| switch (kind) { |
| case CodeForCall: |
| oldCodeBlock = ExecutableToCodeBlockEdge::deactivateAndUnwrap(executable->m_codeBlockForCall.get()); |
| executable->m_codeBlockForCall.setMayBeNull(vm, this, ExecutableToCodeBlockEdge::wrapAndActivate(codeBlock)); |
| break; |
| case CodeForConstruct: |
| oldCodeBlock = ExecutableToCodeBlockEdge::deactivateAndUnwrap(executable->m_codeBlockForConstruct.get()); |
| executable->m_codeBlockForConstruct.setMayBeNull(vm, this, ExecutableToCodeBlockEdge::wrapAndActivate(codeBlock)); |
| break; |
| } |
| break; |
| } |
| } |
| |
| switch (kind) { |
| case CodeForCall: |
| m_jitCodeForCall = genericCodeBlock ? genericCodeBlock->jitCode() : nullptr; |
| m_jitCodeForCallWithArityCheck = nullptr; |
| m_numParametersForCall = genericCodeBlock ? genericCodeBlock->numParameters() : NUM_PARAMETERS_NOT_COMPILED; |
| break; |
| case CodeForConstruct: |
| m_jitCodeForConstruct = genericCodeBlock ? genericCodeBlock->jitCode() : nullptr; |
| m_jitCodeForConstructWithArityCheck = nullptr; |
| m_numParametersForConstruct = genericCodeBlock ? genericCodeBlock->numParameters() : NUM_PARAMETERS_NOT_COMPILED; |
| break; |
| } |
| |
| if (genericCodeBlock) { |
| RELEASE_ASSERT(genericCodeBlock->ownerExecutable() == this); |
| RELEASE_ASSERT(JITCode::isExecutableScript(genericCodeBlock->jitType())); |
| |
| if (UNLIKELY(Options::verboseOSR())) |
| dataLog("Installing ", *genericCodeBlock, "\n"); |
| |
| if (UNLIKELY(vm.m_perBytecodeProfiler)) |
| vm.m_perBytecodeProfiler->ensureBytecodesFor(genericCodeBlock); |
| |
| Debugger* debugger = genericCodeBlock->globalObject()->debugger(); |
| if (UNLIKELY(debugger)) |
| debugger->registerCodeBlock(genericCodeBlock); |
| } |
| |
| if (oldCodeBlock) |
| oldCodeBlock->unlinkIncomingCalls(); |
| |
| vm.heap.writeBarrier(this); |
| } |
| |
| CodeBlock* ScriptExecutable::newCodeBlockFor( |
| CodeSpecializationKind kind, JSFunction* function, JSScope* scope, JSObject*& exception) |
| { |
| VM* vm = scope->vm(); |
| auto throwScope = DECLARE_THROW_SCOPE(*vm); |
| |
| ASSERT(vm->heap.isDeferred()); |
| ASSERT(endColumn() != UINT_MAX); |
| |
| JSGlobalObject* globalObject = scope->globalObject(); |
| ExecState* exec = globalObject->globalExec(); |
| |
| if (classInfo(*vm) == EvalExecutable::info()) { |
| EvalExecutable* executable = jsCast<EvalExecutable*>(this); |
| RELEASE_ASSERT(kind == CodeForCall); |
| RELEASE_ASSERT(!executable->m_evalCodeBlock); |
| RELEASE_ASSERT(!function); |
| auto codeBlock = EvalCodeBlock::create(vm, |
| executable, executable->m_unlinkedEvalCodeBlock.get(), scope, |
| executable->source().provider()); |
| EXCEPTION_ASSERT(throwScope.exception() || codeBlock); |
| if (!codeBlock) { |
| exception = throwException( |
| exec, throwScope, |
| createOutOfMemoryError(exec)); |
| return nullptr; |
| } |
| return codeBlock; |
| } |
| |
| if (classInfo(*vm) == ProgramExecutable::info()) { |
| ProgramExecutable* executable = jsCast<ProgramExecutable*>(this); |
| RELEASE_ASSERT(kind == CodeForCall); |
| RELEASE_ASSERT(!executable->m_programCodeBlock); |
| RELEASE_ASSERT(!function); |
| auto codeBlock = ProgramCodeBlock::create(vm, |
| executable, executable->m_unlinkedProgramCodeBlock.get(), scope, |
| executable->source().provider(), startColumn()); |
| EXCEPTION_ASSERT(throwScope.exception() || codeBlock); |
| if (!codeBlock) { |
| exception = throwException( |
| exec, throwScope, |
| createOutOfMemoryError(exec)); |
| return nullptr; |
| } |
| return codeBlock; |
| } |
| |
| if (classInfo(*vm) == ModuleProgramExecutable::info()) { |
| ModuleProgramExecutable* executable = jsCast<ModuleProgramExecutable*>(this); |
| RELEASE_ASSERT(kind == CodeForCall); |
| RELEASE_ASSERT(!executable->m_moduleProgramCodeBlock); |
| RELEASE_ASSERT(!function); |
| auto codeBlock = ModuleProgramCodeBlock::create(vm, |
| executable, executable->m_unlinkedModuleProgramCodeBlock.get(), scope, |
| executable->source().provider(), startColumn()); |
| EXCEPTION_ASSERT(throwScope.exception() || codeBlock); |
| if (!codeBlock) { |
| exception = throwException( |
| exec, throwScope, |
| createOutOfMemoryError(exec)); |
| return nullptr; |
| } |
| return codeBlock; |
| } |
| |
| RELEASE_ASSERT(classInfo(*vm) == FunctionExecutable::info()); |
| RELEASE_ASSERT(function); |
| FunctionExecutable* executable = jsCast<FunctionExecutable*>(this); |
| RELEASE_ASSERT(!executable->codeBlockFor(kind)); |
| ParserError error; |
| DebuggerMode debuggerMode = globalObject->hasInteractiveDebugger() ? DebuggerOn : DebuggerOff; |
| UnlinkedFunctionCodeBlock* unlinkedCodeBlock = |
| executable->m_unlinkedExecutable->unlinkedCodeBlockFor( |
| *vm, executable->m_source, kind, debuggerMode, error, |
| executable->parseMode()); |
| recordParse( |
| executable->m_unlinkedExecutable->features(), |
| executable->m_unlinkedExecutable->hasCapturedVariables(), |
| lastLine(), endColumn()); |
| if (!unlinkedCodeBlock) { |
| exception = throwException( |
| globalObject->globalExec(), throwScope, |
| error.toErrorObject(globalObject, executable->m_source)); |
| return nullptr; |
| } |
| |
| throwScope.release(); |
| return FunctionCodeBlock::create(vm, executable, unlinkedCodeBlock, scope, |
| source().provider(), source().startOffset(), startColumn()); |
| } |
| |
| CodeBlock* ScriptExecutable::newReplacementCodeBlockFor( |
| CodeSpecializationKind kind) |
| { |
| VM& vm = *this->vm(); |
| if (classInfo(vm) == EvalExecutable::info()) { |
| RELEASE_ASSERT(kind == CodeForCall); |
| EvalExecutable* executable = jsCast<EvalExecutable*>(this); |
| EvalCodeBlock* baseline = static_cast<EvalCodeBlock*>( |
| executable->codeBlock()->baselineVersion()); |
| EvalCodeBlock* result = EvalCodeBlock::create(&vm, |
| CodeBlock::CopyParsedBlock, *baseline); |
| result->setAlternative(vm, baseline); |
| return result; |
| } |
| |
| if (classInfo(vm) == ProgramExecutable::info()) { |
| RELEASE_ASSERT(kind == CodeForCall); |
| ProgramExecutable* executable = jsCast<ProgramExecutable*>(this); |
| ProgramCodeBlock* baseline = static_cast<ProgramCodeBlock*>( |
| executable->codeBlock()->baselineVersion()); |
| ProgramCodeBlock* result = ProgramCodeBlock::create(&vm, |
| CodeBlock::CopyParsedBlock, *baseline); |
| result->setAlternative(vm, baseline); |
| return result; |
| } |
| |
| if (classInfo(vm) == ModuleProgramExecutable::info()) { |
| RELEASE_ASSERT(kind == CodeForCall); |
| ModuleProgramExecutable* executable = jsCast<ModuleProgramExecutable*>(this); |
| ModuleProgramCodeBlock* baseline = static_cast<ModuleProgramCodeBlock*>( |
| executable->codeBlock()->baselineVersion()); |
| ModuleProgramCodeBlock* result = ModuleProgramCodeBlock::create(&vm, |
| CodeBlock::CopyParsedBlock, *baseline); |
| result->setAlternative(vm, baseline); |
| return result; |
| } |
| |
| RELEASE_ASSERT(classInfo(vm) == FunctionExecutable::info()); |
| FunctionExecutable* executable = jsCast<FunctionExecutable*>(this); |
| FunctionCodeBlock* baseline = static_cast<FunctionCodeBlock*>( |
| executable->codeBlockFor(kind)->baselineVersion()); |
| FunctionCodeBlock* result = FunctionCodeBlock::create(&vm, |
| CodeBlock::CopyParsedBlock, *baseline); |
| result->setAlternative(vm, baseline); |
| return result; |
| } |
| |
| static void setupLLInt(VM& vm, CodeBlock* codeBlock) |
| { |
| LLInt::setEntrypoint(vm, codeBlock); |
| } |
| |
| static void setupJIT(VM& vm, CodeBlock* codeBlock) |
| { |
| #if ENABLE(JIT) |
| CompilationResult result = JIT::compile(&vm, codeBlock, JITCompilationMustSucceed); |
| RELEASE_ASSERT(result == CompilationSuccessful); |
| #else |
| UNUSED_PARAM(vm); |
| UNUSED_PARAM(codeBlock); |
| UNREACHABLE_FOR_PLATFORM(); |
| #endif |
| } |
| |
| JSObject* ScriptExecutable::prepareForExecutionImpl( |
| VM& vm, JSFunction* function, JSScope* scope, CodeSpecializationKind kind, CodeBlock*& resultCodeBlock) |
| { |
| auto throwScope = DECLARE_THROW_SCOPE(vm); |
| DeferGCForAWhile deferGC(vm.heap); |
| |
| if (vm.getAndClearFailNextNewCodeBlock()) { |
| auto& state = *scope->globalObject()->globalExec(); |
| return throwException(&state, throwScope, createError(&state, ASCIILiteral("Forced Failure"))); |
| } |
| |
| JSObject* exception = nullptr; |
| CodeBlock* codeBlock = newCodeBlockFor(kind, function, scope, exception); |
| resultCodeBlock = codeBlock; |
| EXCEPTION_ASSERT(!!throwScope.exception() == !codeBlock); |
| if (UNLIKELY(!codeBlock)) |
| return exception; |
| |
| if (Options::validateBytecode()) |
| codeBlock->validate(); |
| |
| if (Options::useLLInt()) |
| setupLLInt(vm, codeBlock); |
| else |
| setupJIT(vm, codeBlock); |
| |
| installCode(vm, codeBlock, codeBlock->codeType(), codeBlock->specializationKind()); |
| return nullptr; |
| } |
| |
| CodeBlockHash ScriptExecutable::hashFor(CodeSpecializationKind kind) const |
| { |
| return CodeBlockHash(source(), kind); |
| } |
| |
| } // namespace JSC |
