X-Git-Url: https://git.saurik.com/apple/javascriptcore.git/blobdiff_plain/9dae56ea45a0f5f8136a5c93d6f3a7f99399ca73..1981f5dfe8d77d97469d20652f712a09400c48ed:/interpreter/Interpreter.cpp diff --git a/interpreter/Interpreter.cpp b/interpreter/Interpreter.cpp index 865e00a..6c43adf 100644 --- a/interpreter/Interpreter.cpp +++ b/interpreter/Interpreter.cpp @@ -1,5 +1,5 @@ /* - * Copyright (C) 2008, 2009 Apple Inc. All rights reserved. + * Copyright (C) 2008, 2009, 2010 Apple Inc. All rights reserved. * Copyright (C) 2008 Cameron Zwarich * * Redistribution and use in source and binary forms, with or without @@ -32,241 +32,68 @@ #include "Arguments.h" #include "BatchedTransitionOptimizer.h" +#include "CallFrame.h" +#include "CallFrameClosure.h" #include "CodeBlock.h" +#include "Heap.h" +#include "Debugger.h" #include "DebuggerCallFrame.h" +#include "ErrorInstance.h" #include "EvalCodeCache.h" #include "ExceptionHelpers.h" -#include "CallFrame.h" -#include "GlobalEvalFunction.h" +#include "GetterSetter.h" #include "JSActivation.h" #include "JSArray.h" -#include "JSByteArray.h" -#include "JSFunction.h" +#include "JSBoundFunction.h" #include "JSNotAnObject.h" #include "JSPropertyNameIterator.h" +#include "LiteralParser.h" #include "JSStaticScopeObject.h" #include "JSString.h" #include "ObjectPrototype.h" +#include "Operations.h" #include "Parser.h" #include "Profiler.h" #include "RegExpObject.h" #include "RegExpPrototype.h" #include "Register.h" -#include "Collector.h" -#include "Debugger.h" -#include "Operations.h" #include "SamplingTool.h" +#include "StrictEvalActivation.h" +#include "StrongInlines.h" +#include "UStringConcatenate.h" +#include #include +#include +#include #if ENABLE(JIT) #include "JIT.h" #endif -#if ENABLE(ASSEMBLER) -#include "AssemblerBuffer.h" -#endif - -#if PLATFORM(DARWIN) -#include -#endif - -#if HAVE(SYS_TIME_H) -#include -#endif - -#if PLATFORM(WIN_OS) -#include -#endif - -#if PLATFORM(QT) -#include -#endif +#define WTF_USE_GCC_COMPUTED_GOTO_WORKAROUND ((ENABLE(COMPUTED_GOTO_CLASSIC_INTERPRETER) || ENABLE(LLINT)) && !defined(__llvm__)) using namespace std; namespace JSC { -// Preferred number of milliseconds between each timeout check -static const int preferredScriptCheckTimeInterval = 1000; - -static ALWAYS_INLINE unsigned bytecodeOffsetForPC(CallFrame* callFrame, CodeBlock* codeBlock, void* pc) -{ -#if ENABLE(JIT) - return codeBlock->getBytecodeIndex(callFrame, pc); -#else - UNUSED_PARAM(callFrame); - return static_cast(pc) - codeBlock->instructions().begin(); -#endif -} - // Returns the depth of the scope chain within a given call frame. -static int depth(CodeBlock* codeBlock, ScopeChain& sc) +static int depth(CodeBlock* codeBlock, ScopeChainNode* sc) { if (!codeBlock->needsFullScopeChain()) return 0; - return sc.localDepth(); -} - -static inline bool jsLess(CallFrame* callFrame, JSValuePtr v1, JSValuePtr v2) -{ - if (JSValuePtr::areBothInt32Fast(v1, v2)) - return v1.getInt32Fast() < v2.getInt32Fast(); - - double n1; - double n2; - if (v1.getNumber(n1) && v2.getNumber(n2)) - return n1 < n2; - - Interpreter* interpreter = callFrame->interpreter(); - if (interpreter->isJSString(v1) && interpreter->isJSString(v2)) - return asString(v1)->value() < asString(v2)->value(); - - JSValuePtr p1; - JSValuePtr p2; - bool wasNotString1 = v1.getPrimitiveNumber(callFrame, n1, p1); - bool wasNotString2 = v2.getPrimitiveNumber(callFrame, n2, p2); - - if (wasNotString1 | wasNotString2) - return n1 < n2; - - return asString(p1)->value() < asString(p2)->value(); -} - -static inline bool jsLessEq(CallFrame* callFrame, JSValuePtr v1, JSValuePtr v2) -{ - if (JSValuePtr::areBothInt32Fast(v1, v2)) - return v1.getInt32Fast() <= v2.getInt32Fast(); - - double n1; - double n2; - if (v1.getNumber(n1) && v2.getNumber(n2)) - return n1 <= n2; - - Interpreter* interpreter = callFrame->interpreter(); - if (interpreter->isJSString(v1) && interpreter->isJSString(v2)) - return !(asString(v2)->value() < asString(v1)->value()); - - JSValuePtr p1; - JSValuePtr p2; - bool wasNotString1 = v1.getPrimitiveNumber(callFrame, n1, p1); - bool wasNotString2 = v2.getPrimitiveNumber(callFrame, n2, p2); - - if (wasNotString1 | wasNotString2) - return n1 <= n2; - - return !(asString(p2)->value() < asString(p1)->value()); -} - -static NEVER_INLINE JSValuePtr jsAddSlowCase(CallFrame* callFrame, JSValuePtr v1, JSValuePtr v2) -{ - // exception for the Date exception in defaultValue() - JSValuePtr p1 = v1.toPrimitive(callFrame); - JSValuePtr p2 = v2.toPrimitive(callFrame); - - if (p1.isString() || p2.isString()) { - RefPtr value = concatenate(p1.toString(callFrame).rep(), p2.toString(callFrame).rep()); - if (!value) - return throwOutOfMemoryError(callFrame); - return jsString(callFrame, value.release()); - } - - return jsNumber(callFrame, p1.toNumber(callFrame) + p2.toNumber(callFrame)); -} - -// Fast-path choices here are based on frequency data from SunSpider: -// Add case: -// --------------------------- -// 5626160 Add case: 3 3 (of these, 3637690 are for immediate values) -// 247412 Add case: 5 5 -// 20900 Add case: 5 6 -// 13962 Add case: 5 3 -// 4000 Add case: 3 5 - -static ALWAYS_INLINE JSValuePtr jsAdd(CallFrame* callFrame, JSValuePtr v1, JSValuePtr v2) -{ - double left; - double right = 0.0; - - bool rightIsNumber = v2.getNumber(right); - if (rightIsNumber && v1.getNumber(left)) - return jsNumber(callFrame, left + right); - - bool leftIsString = v1.isString(); - if (leftIsString && v2.isString()) { - RefPtr value = concatenate(asString(v1)->value().rep(), asString(v2)->value().rep()); - if (!value) - return throwOutOfMemoryError(callFrame); - return jsString(callFrame, value.release()); - } - - if (rightIsNumber & leftIsString) { - RefPtr value = v2.isInt32Fast() ? - concatenate(asString(v1)->value().rep(), v2.getInt32Fast()) : - concatenate(asString(v1)->value().rep(), right); - - if (!value) - return throwOutOfMemoryError(callFrame); - return jsString(callFrame, value.release()); - } - - // All other cases are pretty uncommon - return jsAddSlowCase(callFrame, v1, v2); -} - -static JSValuePtr jsTypeStringForValue(CallFrame* callFrame, JSValuePtr v) -{ - if (v.isUndefined()) - return jsNontrivialString(callFrame, "undefined"); - if (v.isBoolean()) - return jsNontrivialString(callFrame, "boolean"); - if (v.isNumber()) - return jsNontrivialString(callFrame, "number"); - if (v.isString()) - return jsNontrivialString(callFrame, "string"); - if (v.isObject()) { - // Return "undefined" for objects that should be treated - // as null when doing comparisons. - if (asObject(v)->structure()->typeInfo().masqueradesAsUndefined()) - return jsNontrivialString(callFrame, "undefined"); - CallData callData; - if (asObject(v)->getCallData(callData) != CallTypeNone) - return jsNontrivialString(callFrame, "function"); - } - return jsNontrivialString(callFrame, "object"); -} - -static bool jsIsObjectType(JSValuePtr v) -{ - if (!v.isCell()) - return v.isNull(); - - JSType type = asCell(v)->structure()->typeInfo().type(); - if (type == NumberType || type == StringType) - return false; - if (type == ObjectType) { - if (asObject(v)->structure()->typeInfo().masqueradesAsUndefined()) - return false; - CallData callData; - if (asObject(v)->getCallData(callData) != CallTypeNone) - return false; - } - return true; + return sc->localDepth(); } -static bool jsIsFunctionType(JSValuePtr v) +#if ENABLE(CLASSIC_INTERPRETER) +static NEVER_INLINE JSValue concatenateStrings(ExecState* exec, Register* strings, unsigned count) { - if (v.isObject()) { - CallData callData; - if (asObject(v)->getCallData(callData) != CallTypeNone) - return true; - } - return false; + return jsString(exec, strings, count); } -NEVER_INLINE bool Interpreter::resolve(CallFrame* callFrame, Instruction* vPC, JSValuePtr& exceptionValue) +NEVER_INLINE bool Interpreter::resolve(CallFrame* callFrame, Instruction* vPC, JSValue& exceptionValue) { - int dst = (vPC + 1)->u.operand; - int property = (vPC + 2)->u.operand; + int dst = vPC[1].u.operand; + int property = vPC[2].u.operand; ScopeChainNode* scopeChain = callFrame->scopeChain(); ScopeChainIterator iter = scopeChain->begin(); @@ -276,129 +103,194 @@ NEVER_INLINE bool Interpreter::resolve(CallFrame* callFrame, Instruction* vPC, J CodeBlock* codeBlock = callFrame->codeBlock(); Identifier& ident = codeBlock->identifier(property); do { - JSObject* o = *iter; + JSObject* o = iter->get(); PropertySlot slot(o); if (o->getPropertySlot(callFrame, ident, slot)) { - JSValuePtr result = slot.getValue(callFrame, ident); + JSValue result = slot.getValue(callFrame, ident); exceptionValue = callFrame->globalData().exception; if (exceptionValue) return false; - callFrame[dst] = JSValuePtr(result); + callFrame->uncheckedR(dst) = JSValue(result); return true; } } while (++iter != end); - exceptionValue = createUndefinedVariableError(callFrame, ident, vPC - codeBlock->instructions().begin(), codeBlock); + exceptionValue = createUndefinedVariableError(callFrame, ident); return false; } -NEVER_INLINE bool Interpreter::resolveSkip(CallFrame* callFrame, Instruction* vPC, JSValuePtr& exceptionValue) +NEVER_INLINE bool Interpreter::resolveSkip(CallFrame* callFrame, Instruction* vPC, JSValue& exceptionValue) { CodeBlock* codeBlock = callFrame->codeBlock(); - int dst = (vPC + 1)->u.operand; - int property = (vPC + 2)->u.operand; - int skip = (vPC + 3)->u.operand + codeBlock->needsFullScopeChain(); + int dst = vPC[1].u.operand; + int property = vPC[2].u.operand; + int skip = vPC[3].u.operand; ScopeChainNode* scopeChain = callFrame->scopeChain(); ScopeChainIterator iter = scopeChain->begin(); ScopeChainIterator end = scopeChain->end(); ASSERT(iter != end); + bool checkTopLevel = codeBlock->codeType() == FunctionCode && codeBlock->needsFullScopeChain(); + ASSERT(skip || !checkTopLevel); + if (checkTopLevel && skip--) { + if (callFrame->uncheckedR(codeBlock->activationRegister()).jsValue()) + ++iter; + } while (skip--) { ++iter; ASSERT(iter != end); } Identifier& ident = codeBlock->identifier(property); do { - JSObject* o = *iter; + JSObject* o = iter->get(); PropertySlot slot(o); if (o->getPropertySlot(callFrame, ident, slot)) { - JSValuePtr result = slot.getValue(callFrame, ident); + JSValue result = slot.getValue(callFrame, ident); exceptionValue = callFrame->globalData().exception; if (exceptionValue) return false; - callFrame[dst] = JSValuePtr(result); + ASSERT(result); + callFrame->uncheckedR(dst) = JSValue(result); return true; } } while (++iter != end); - exceptionValue = createUndefinedVariableError(callFrame, ident, vPC - codeBlock->instructions().begin(), codeBlock); + exceptionValue = createUndefinedVariableError(callFrame, ident); return false; } -NEVER_INLINE bool Interpreter::resolveGlobal(CallFrame* callFrame, Instruction* vPC, JSValuePtr& exceptionValue) +NEVER_INLINE bool Interpreter::resolveGlobal(CallFrame* callFrame, Instruction* vPC, JSValue& exceptionValue) { - int dst = (vPC + 1)->u.operand; - JSGlobalObject* globalObject = static_cast((vPC + 2)->u.jsCell); + int dst = vPC[1].u.operand; + CodeBlock* codeBlock = callFrame->codeBlock(); + JSGlobalObject* globalObject = codeBlock->globalObject(); ASSERT(globalObject->isGlobalObject()); - int property = (vPC + 3)->u.operand; - Structure* structure = (vPC + 4)->u.structure; - int offset = (vPC + 5)->u.operand; + int property = vPC[2].u.operand; + Structure* structure = vPC[3].u.structure.get(); + int offset = vPC[4].u.operand; if (structure == globalObject->structure()) { - callFrame[dst] = JSValuePtr(globalObject->getDirectOffset(offset)); + callFrame->uncheckedR(dst) = JSValue(globalObject->getDirectOffset(offset)); return true; } - CodeBlock* codeBlock = callFrame->codeBlock(); Identifier& ident = codeBlock->identifier(property); PropertySlot slot(globalObject); if (globalObject->getPropertySlot(callFrame, ident, slot)) { - JSValuePtr result = slot.getValue(callFrame, ident); - if (slot.isCacheable() && !globalObject->structure()->isDictionary()) { - if (vPC[4].u.structure) - vPC[4].u.structure->deref(); - globalObject->structure()->ref(); - vPC[4] = globalObject->structure(); - vPC[5] = slot.cachedOffset(); - callFrame[dst] = JSValuePtr(result); + JSValue result = slot.getValue(callFrame, ident); + if (slot.isCacheableValue() && !globalObject->structure()->isUncacheableDictionary() && slot.slotBase() == globalObject) { + vPC[3].u.structure.set(callFrame->globalData(), codeBlock->ownerExecutable(), globalObject->structure()); + vPC[4] = slot.cachedOffset(); + callFrame->uncheckedR(dst) = JSValue(result); return true; } exceptionValue = callFrame->globalData().exception; if (exceptionValue) return false; - callFrame[dst] = JSValuePtr(result); + callFrame->uncheckedR(dst) = JSValue(result); return true; } - exceptionValue = createUndefinedVariableError(callFrame, ident, vPC - codeBlock->instructions().begin(), codeBlock); + exceptionValue = createUndefinedVariableError(callFrame, ident); return false; } -static ALWAYS_INLINE JSValuePtr inlineResolveBase(CallFrame* callFrame, Identifier& property, ScopeChainNode* scopeChain) +NEVER_INLINE bool Interpreter::resolveGlobalDynamic(CallFrame* callFrame, Instruction* vPC, JSValue& exceptionValue) { + int dst = vPC[1].u.operand; + CodeBlock* codeBlock = callFrame->codeBlock(); + JSGlobalObject* globalObject = codeBlock->globalObject(); + ASSERT(globalObject->isGlobalObject()); + int property = vPC[2].u.operand; + Structure* structure = vPC[3].u.structure.get(); + int offset = vPC[4].u.operand; + int skip = vPC[5].u.operand; + + ScopeChainNode* scopeChain = callFrame->scopeChain(); ScopeChainIterator iter = scopeChain->begin(); - ScopeChainIterator next = iter; - ++next; ScopeChainIterator end = scopeChain->end(); ASSERT(iter != end); - - PropertySlot slot; - JSObject* base; - while (true) { - base = *iter; - if (next == end || base->getPropertySlot(callFrame, property, slot)) - return base; - - iter = next; - ++next; + bool checkTopLevel = codeBlock->codeType() == FunctionCode && codeBlock->needsFullScopeChain(); + ASSERT(skip || !checkTopLevel); + if (checkTopLevel && skip--) { + if (callFrame->uncheckedR(codeBlock->activationRegister()).jsValue()) + ++iter; + } + while (skip--) { + JSObject* o = iter->get(); + if (o->hasCustomProperties()) { + Identifier& ident = codeBlock->identifier(property); + do { + PropertySlot slot(o); + if (o->getPropertySlot(callFrame, ident, slot)) { + JSValue result = slot.getValue(callFrame, ident); + exceptionValue = callFrame->globalData().exception; + if (exceptionValue) + return false; + ASSERT(result); + callFrame->uncheckedR(dst) = JSValue(result); + return true; + } + if (iter == end) + break; + o = iter->get(); + ++iter; + } while (true); + exceptionValue = createUndefinedVariableError(callFrame, ident); + return false; + } + ++iter; + } + + if (structure == globalObject->structure()) { + callFrame->uncheckedR(dst) = JSValue(globalObject->getDirectOffset(offset)); + ASSERT(callFrame->uncheckedR(dst).jsValue()); + return true; } - ASSERT_NOT_REACHED(); - return noValue(); + Identifier& ident = codeBlock->identifier(property); + PropertySlot slot(globalObject); + if (globalObject->getPropertySlot(callFrame, ident, slot)) { + JSValue result = slot.getValue(callFrame, ident); + if (slot.isCacheableValue() && !globalObject->structure()->isUncacheableDictionary() && slot.slotBase() == globalObject) { + vPC[3].u.structure.set(callFrame->globalData(), codeBlock->ownerExecutable(), globalObject->structure()); + vPC[4] = slot.cachedOffset(); + ASSERT(result); + callFrame->uncheckedR(dst) = JSValue(result); + return true; + } + + exceptionValue = callFrame->globalData().exception; + if (exceptionValue) + return false; + ASSERT(result); + callFrame->uncheckedR(dst) = JSValue(result); + return true; + } + + exceptionValue = createUndefinedVariableError(callFrame, ident); + return false; } NEVER_INLINE void Interpreter::resolveBase(CallFrame* callFrame, Instruction* vPC) { - int dst = (vPC + 1)->u.operand; - int property = (vPC + 2)->u.operand; - callFrame[dst] = JSValuePtr(inlineResolveBase(callFrame, callFrame->codeBlock()->identifier(property), callFrame->scopeChain())); + int dst = vPC[1].u.operand; + int property = vPC[2].u.operand; + bool isStrictPut = vPC[3].u.operand; + Identifier ident = callFrame->codeBlock()->identifier(property); + JSValue result = JSC::resolveBase(callFrame, ident, callFrame->scopeChain(), isStrictPut); + if (result) { + callFrame->uncheckedR(dst) = result; + ASSERT(callFrame->uncheckedR(dst).jsValue()); + } else + callFrame->globalData().exception = createErrorForInvalidGlobalAssignment(callFrame, ident.ustring()); } -NEVER_INLINE bool Interpreter::resolveBaseAndProperty(CallFrame* callFrame, Instruction* vPC, JSValuePtr& exceptionValue) +NEVER_INLINE bool Interpreter::resolveBaseAndProperty(CallFrame* callFrame, Instruction* vPC, JSValue& exceptionValue) { - int baseDst = (vPC + 1)->u.operand; - int propDst = (vPC + 2)->u.operand; - int property = (vPC + 3)->u.operand; + int baseDst = vPC[1].u.operand; + int propDst = vPC[2].u.operand; + int property = vPC[3].u.operand; ScopeChainNode* scopeChain = callFrame->scopeChain(); ScopeChainIterator iter = scopeChain->begin(); @@ -412,29 +304,29 @@ NEVER_INLINE bool Interpreter::resolveBaseAndProperty(CallFrame* callFrame, Inst Identifier& ident = codeBlock->identifier(property); JSObject* base; do { - base = *iter; + base = iter->get(); PropertySlot slot(base); if (base->getPropertySlot(callFrame, ident, slot)) { - JSValuePtr result = slot.getValue(callFrame, ident); + JSValue result = slot.getValue(callFrame, ident); exceptionValue = callFrame->globalData().exception; if (exceptionValue) return false; - callFrame[propDst] = JSValuePtr(result); - callFrame[baseDst] = JSValuePtr(base); + callFrame->uncheckedR(propDst) = JSValue(result); + callFrame->uncheckedR(baseDst) = JSValue(base); return true; } ++iter; } while (iter != end); - exceptionValue = createUndefinedVariableError(callFrame, ident, vPC - codeBlock->instructions().begin(), codeBlock); + exceptionValue = createUndefinedVariableError(callFrame, ident); return false; } -NEVER_INLINE bool Interpreter::resolveBaseAndFunc(CallFrame* callFrame, Instruction* vPC, JSValuePtr& exceptionValue) +NEVER_INLINE bool Interpreter::resolveThisAndProperty(CallFrame* callFrame, Instruction* vPC, JSValue& exceptionValue) { - int baseDst = (vPC + 1)->u.operand; - int funcDst = (vPC + 2)->u.operand; - int property = (vPC + 3)->u.operand; + int thisDst = vPC[1].u.operand; + int propDst = vPC[2].u.operand; + int property = vPC[3].u.operand; ScopeChainNode* scopeChain = callFrame->scopeChain(); ScopeChainIterator iter = scopeChain->begin(); @@ -448,153 +340,269 @@ NEVER_INLINE bool Interpreter::resolveBaseAndFunc(CallFrame* callFrame, Instruct Identifier& ident = codeBlock->identifier(property); JSObject* base; do { - base = *iter; + base = iter->get(); + ++iter; PropertySlot slot(base); - if (base->getPropertySlot(callFrame, ident, slot)) { - // ECMA 11.2.3 says that if we hit an activation the this value should be null. - // However, section 10.2.3 says that in the case where the value provided - // by the caller is null, the global object should be used. It also says - // that the section does not apply to internal functions, but for simplicity - // of implementation we use the global object anyway here. This guarantees - // that in host objects you always get a valid object for this. - // We also handle wrapper substitution for the global object at the same time. - JSObject* thisObj = base->toThisObject(callFrame); - JSValuePtr result = slot.getValue(callFrame, ident); + if (base->getPropertySlot(callFrame, ident, slot)) { + JSValue result = slot.getValue(callFrame, ident); exceptionValue = callFrame->globalData().exception; if (exceptionValue) return false; - - callFrame[baseDst] = JSValuePtr(thisObj); - callFrame[funcDst] = JSValuePtr(result); + callFrame->uncheckedR(propDst) = JSValue(result); + // All entries on the scope chain should be EnvironmentRecords (activations etc), + // other then 'with' object, which are directly referenced from the scope chain, + // and the global object. If we hit either an EnvironmentRecord or a global + // object at the end of the scope chain, this is undefined. If we hit a non- + // EnvironmentRecord within the scope chain, pass the base as the this value. + if (iter == end || base->structure()->typeInfo().isEnvironmentRecord()) + callFrame->uncheckedR(thisDst) = jsUndefined(); + else + callFrame->uncheckedR(thisDst) = JSValue(base); return true; } - ++iter; } while (iter != end); - exceptionValue = createUndefinedVariableError(callFrame, ident, vPC - codeBlock->instructions().begin(), codeBlock); + exceptionValue = createUndefinedVariableError(callFrame, ident); return false; } -ALWAYS_INLINE CallFrame* Interpreter::slideRegisterWindowForCall(CodeBlock* newCodeBlock, RegisterFile* registerFile, CallFrame* callFrame, size_t registerOffset, int argc) +#endif // ENABLE(CLASSIC_INTERPRETER) + +ALWAYS_INLINE CallFrame* Interpreter::slideRegisterWindowForCall(CodeBlock* newCodeBlock, RegisterFile* registerFile, CallFrame* callFrame, size_t registerOffset, int argumentCountIncludingThis) { - Register* r = callFrame->registers(); - Register* newEnd = r + registerOffset + newCodeBlock->m_numCalleeRegisters; + // This ensures enough space for the worst case scenario of zero arguments passed by the caller. + if (!registerFile->grow(callFrame->registers() + registerOffset + newCodeBlock->numParameters() + newCodeBlock->m_numCalleeRegisters)) + return 0; - if (LIKELY(argc == newCodeBlock->m_numParameters)) { // correct number of arguments - if (UNLIKELY(!registerFile->grow(newEnd))) - return 0; - r += registerOffset; - } else if (argc < newCodeBlock->m_numParameters) { // too few arguments -- fill in the blanks - size_t omittedArgCount = newCodeBlock->m_numParameters - argc; - registerOffset += omittedArgCount; - newEnd += omittedArgCount; - if (!registerFile->grow(newEnd)) - return 0; - r += registerOffset; + if (argumentCountIncludingThis >= newCodeBlock->numParameters()) { + Register* newCallFrame = callFrame->registers() + registerOffset; + return CallFrame::create(newCallFrame); + } - Register* argv = r - RegisterFile::CallFrameHeaderSize - omittedArgCount; - for (size_t i = 0; i < omittedArgCount; ++i) - argv[i] = jsUndefined(); - } else { // too many arguments -- copy expected arguments, leaving the extra arguments behind - size_t numParameters = newCodeBlock->m_numParameters; - registerOffset += numParameters; - newEnd += numParameters; + // Too few arguments -- copy arguments, then fill in missing arguments with undefined. + size_t delta = newCodeBlock->numParameters() - argumentCountIncludingThis; + CallFrame* newCallFrame = CallFrame::create(callFrame->registers() + registerOffset + delta); - if (!registerFile->grow(newEnd)) - return 0; - r += registerOffset; + Register* dst = &newCallFrame->uncheckedR(CallFrame::thisArgumentOffset()); + Register* end = dst - argumentCountIncludingThis; + for ( ; dst != end; --dst) + *dst = *(dst - delta); - Register* argv = r - RegisterFile::CallFrameHeaderSize - numParameters - argc; - for (size_t i = 0; i < numParameters; ++i) - argv[i + argc] = argv[i]; - } + end -= delta; + for ( ; dst != end; --dst) + *dst = jsUndefined(); - return CallFrame::create(r); + return newCallFrame; } -static NEVER_INLINE bool isNotObject(CallFrame* callFrame, bool forInstanceOf, CodeBlock* codeBlock, const Instruction* vPC, JSValuePtr value, JSValuePtr& exceptionData) +#if ENABLE(CLASSIC_INTERPRETER) +static NEVER_INLINE bool isInvalidParamForIn(CallFrame* callFrame, JSValue value, JSValue& exceptionData) { if (value.isObject()) return false; - exceptionData = createInvalidParamError(callFrame, forInstanceOf ? "instanceof" : "in" , value, vPC - codeBlock->instructions().begin(), codeBlock); + exceptionData = createInvalidParamError(callFrame, "in" , value); return true; } -NEVER_INLINE JSValuePtr Interpreter::callEval(CallFrame* callFrame, RegisterFile* registerFile, Register* argv, int argc, int registerOffset, JSValuePtr& exceptionValue) +static NEVER_INLINE bool isInvalidParamForInstanceOf(CallFrame* callFrame, JSValue value, JSValue& exceptionData) { - if (argc < 2) - return jsUndefined(); + if (value.isObject() && asObject(value)->structure()->typeInfo().implementsHasInstance()) + return false; + exceptionData = createInvalidParamError(callFrame, "instanceof" , value); + return true; +} +#endif - JSValuePtr program = argv[1].jsValue(callFrame); +JSValue eval(CallFrame* callFrame) +{ + if (!callFrame->argumentCount()) + return jsUndefined(); + JSValue program = callFrame->argument(0); if (!program.isString()) return program; + + TopCallFrameSetter topCallFrame(callFrame->globalData(), callFrame); + UString programSource = asString(program)->value(callFrame); + if (callFrame->hadException()) + return JSValue(); + + CallFrame* callerFrame = callFrame->callerFrame(); + CodeBlock* callerCodeBlock = callerFrame->codeBlock(); + ScopeChainNode* callerScopeChain = callerFrame->scopeChain(); + EvalExecutable* eval = callerCodeBlock->evalCodeCache().tryGet(callerCodeBlock->isStrictMode(), programSource, callerScopeChain); + + if (!eval) { + if (!callerCodeBlock->isStrictMode()) { + // FIXME: We can use the preparser in strict mode, we just need additional logic + // to prevent duplicates. + if (programSource.is8Bit()) { + LiteralParser preparser(callFrame, programSource.characters8(), programSource.length(), NonStrictJSON); + if (JSValue parsedObject = preparser.tryLiteralParse()) + return parsedObject; + } else { + LiteralParser preparser(callFrame, programSource.characters16(), programSource.length(), NonStrictJSON); + if (JSValue parsedObject = preparser.tryLiteralParse()) + return parsedObject; + } + } - UString programSource = asString(program)->value(); - - ScopeChainNode* scopeChain = callFrame->scopeChain(); - CodeBlock* codeBlock = callFrame->codeBlock(); - RefPtr evalNode = codeBlock->evalCodeCache().get(callFrame, programSource, scopeChain, exceptionValue); - - JSValuePtr result = jsUndefined(); - if (evalNode) - result = callFrame->globalData().interpreter->execute(evalNode.get(), callFrame, callFrame->thisValue().toThisObject(callFrame), callFrame->registers() - registerFile->start() + registerOffset, scopeChain, &exceptionValue); + JSValue exceptionValue; + eval = callerCodeBlock->evalCodeCache().getSlow(callFrame, callerCodeBlock->ownerExecutable(), callerCodeBlock->isStrictMode(), programSource, callerScopeChain, exceptionValue); + + ASSERT(!eval == exceptionValue); + if (UNLIKELY(!eval)) + return throwError(callFrame, exceptionValue); + } - return result; + JSValue thisValue = callerFrame->thisValue(); + ASSERT(isValidThisObject(thisValue, callFrame)); + Interpreter* interpreter = callFrame->globalData().interpreter; + return interpreter->execute(eval, callFrame, thisValue, callerScopeChain, callFrame->registers() - interpreter->registerFile().begin() + 1 + RegisterFile::CallFrameHeaderSize); } -Interpreter::Interpreter() - : m_sampler(0) -#if ENABLE(JIT) - , m_ctiArrayLengthTrampoline(0) - , m_ctiStringLengthTrampoline(0) - , m_ctiVirtualCallPreLink(0) - , m_ctiVirtualCallLink(0) - , m_ctiVirtualCall(0) -#endif - , m_reentryDepth(0) - , m_timeoutTime(0) - , m_timeAtLastCheckTimeout(0) - , m_timeExecuting(0) - , m_timeoutCheckCount(0) - , m_ticksUntilNextTimeoutCheck(initialTickCountThreshold) +CallFrame* loadVarargs(CallFrame* callFrame, RegisterFile* registerFile, JSValue thisValue, JSValue arguments, int firstFreeRegister) { - initTimeout(); - privateExecute(InitializeAndReturn, 0, 0, 0); - - // Bizarrely, calling fastMalloc here is faster than allocating space on the stack. - void* storage = fastMalloc(sizeof(CollectorBlock)); + if (!arguments) { // f.apply(x, arguments), with arguments unmodified. + unsigned argumentCountIncludingThis = callFrame->argumentCountIncludingThis(); + CallFrame* newCallFrame = CallFrame::create(callFrame->registers() + firstFreeRegister + argumentCountIncludingThis + RegisterFile::CallFrameHeaderSize); + if (argumentCountIncludingThis > Arguments::MaxArguments + 1 || !registerFile->grow(newCallFrame->registers())) { + callFrame->globalData().exception = createStackOverflowError(callFrame); + return 0; + } + + newCallFrame->setArgumentCountIncludingThis(argumentCountIncludingThis); + newCallFrame->setThisValue(thisValue); + for (size_t i = 0; i < callFrame->argumentCount(); ++i) + newCallFrame->setArgument(i, callFrame->argument(i)); + return newCallFrame; + } + + if (arguments.isUndefinedOrNull()) { + CallFrame* newCallFrame = CallFrame::create(callFrame->registers() + firstFreeRegister + 1 + RegisterFile::CallFrameHeaderSize); + if (!registerFile->grow(newCallFrame->registers())) { + callFrame->globalData().exception = createStackOverflowError(callFrame); + return 0; + } + newCallFrame->setArgumentCountIncludingThis(1); + newCallFrame->setThisValue(thisValue); + return newCallFrame; + } - JSCell* jsArray = new (storage) JSArray(JSArray::createStructure(jsNull())); - m_jsArrayVptr = jsArray->vptr(); - jsArray->~JSCell(); + if (!arguments.isObject()) { + callFrame->globalData().exception = createInvalidParamError(callFrame, "Function.prototype.apply", arguments); + return 0; + } - JSCell* jsByteArray = new (storage) JSByteArray(JSByteArray::VPtrStealingHack); - m_jsByteArrayVptr = jsByteArray->vptr(); - jsByteArray->~JSCell(); + if (asObject(arguments)->classInfo() == &Arguments::s_info) { + Arguments* argsObject = asArguments(arguments); + unsigned argCount = argsObject->length(callFrame); + CallFrame* newCallFrame = CallFrame::create(callFrame->registers() + firstFreeRegister + CallFrame::offsetFor(argCount + 1)); + if (argCount > Arguments::MaxArguments || !registerFile->grow(newCallFrame->registers())) { + callFrame->globalData().exception = createStackOverflowError(callFrame); + return 0; + } + newCallFrame->setArgumentCountIncludingThis(argCount + 1); + newCallFrame->setThisValue(thisValue); + argsObject->copyToArguments(callFrame, newCallFrame, argCount); + return newCallFrame; + } + + if (isJSArray(arguments)) { + JSArray* array = asArray(arguments); + unsigned argCount = array->length(); + CallFrame* newCallFrame = CallFrame::create(callFrame->registers() + firstFreeRegister + CallFrame::offsetFor(argCount + 1)); + if (argCount > Arguments::MaxArguments || !registerFile->grow(newCallFrame->registers())) { + callFrame->globalData().exception = createStackOverflowError(callFrame); + return 0; + } + newCallFrame->setArgumentCountIncludingThis(argCount + 1); + newCallFrame->setThisValue(thisValue); + array->copyToArguments(callFrame, newCallFrame, argCount); + return newCallFrame; + } - JSCell* jsString = new (storage) JSString(JSString::VPtrStealingHack); - m_jsStringVptr = jsString->vptr(); - jsString->~JSCell(); + JSObject* argObject = asObject(arguments); + unsigned argCount = argObject->get(callFrame, callFrame->propertyNames().length).toUInt32(callFrame); + CallFrame* newCallFrame = CallFrame::create(callFrame->registers() + firstFreeRegister + CallFrame::offsetFor(argCount + 1)); + if (argCount > Arguments::MaxArguments || !registerFile->grow(newCallFrame->registers())) { + callFrame->globalData().exception = createStackOverflowError(callFrame); + return 0; + } + newCallFrame->setArgumentCountIncludingThis(argCount + 1); + newCallFrame->setThisValue(thisValue); + for (size_t i = 0; i < argCount; ++i) { + newCallFrame->setArgument(i, asObject(arguments)->get(callFrame, i)); + if (UNLIKELY(callFrame->globalData().exception)) + return 0; + } + return newCallFrame; +} - JSCell* jsFunction = new (storage) JSFunction(JSFunction::createStructure(jsNull())); - m_jsFunctionVptr = jsFunction->vptr(); - jsFunction->~JSCell(); - - fastFree(storage); +Interpreter::Interpreter() + : m_sampleEntryDepth(0) + , m_reentryDepth(0) +#if !ASSERT_DISABLED + , m_initialized(false) +#endif + , m_classicEnabled(false) +{ } -void Interpreter::initialize(JSGlobalData* globalData) +Interpreter::~Interpreter() { -#if ENABLE(JIT) - JIT::compileCTIMachineTrampolines(globalData); -#else - UNUSED_PARAM(globalData); +#if ENABLE(LLINT) + if (m_classicEnabled) + delete[] m_opcodeTable; #endif } -Interpreter::~Interpreter() +void Interpreter::initialize(LLInt::Data* llintData, bool canUseJIT) { + UNUSED_PARAM(llintData); + UNUSED_PARAM(canUseJIT); + + // If we have LLInt, then we shouldn't be building any kind of classic interpreter. +#if ENABLE(LLINT) && ENABLE(CLASSIC_INTERPRETER) +#error "Building both LLInt and the Classic Interpreter is not supported because it doesn't make sense." +#endif + +#if ENABLE(LLINT) + m_opcodeTable = llintData->opcodeMap(); + for (int i = 0; i < numOpcodeIDs; ++i) + m_opcodeIDTable.add(m_opcodeTable[i], static_cast(i)); + m_classicEnabled = false; +#elif ENABLE(COMPUTED_GOTO_CLASSIC_INTERPRETER) + if (canUseJIT) { + // If the JIT is present, don't use jump destinations for opcodes. + + for (int i = 0; i < numOpcodeIDs; ++i) { + Opcode opcode = bitwise_cast(static_cast(i)); + m_opcodeTable[i] = opcode; + } + m_classicEnabled = false; + } else { + privateExecute(InitializeAndReturn, 0, 0); + + for (int i = 0; i < numOpcodeIDs; ++i) + m_opcodeIDTable.add(m_opcodeTable[i], static_cast(i)); + + m_classicEnabled = true; + } +#else +#if ENABLE(CLASSIC_INTERPRETER) + m_classicEnabled = true; +#else + m_classicEnabled = false; +#endif +#endif // ENABLE(COMPUTED_GOTO_CLASSIC_INTERPRETER) +#if !ASSERT_DISABLED + m_initialized = true; +#endif + +#if ENABLE(OPCODE_SAMPLING) + enableSampler(); +#endif } #ifndef NDEBUG @@ -607,85 +615,86 @@ void Interpreter::dumpCallFrame(CallFrame* callFrame) void Interpreter::dumpRegisters(CallFrame* callFrame) { - printf("Register frame: \n\n"); - printf("----------------------------------------------------\n"); - printf(" use | address | value \n"); - printf("----------------------------------------------------\n"); + dataLog("Register frame: \n\n"); + dataLog("-----------------------------------------------------------------------------\n"); + dataLog(" use | address | value \n"); + dataLog("-----------------------------------------------------------------------------\n"); CodeBlock* codeBlock = callFrame->codeBlock(); - RegisterFile* registerFile = &callFrame->scopeChain()->globalObject()->globalData()->interpreter->registerFile(); const Register* it; const Register* end; + JSValue v; - if (codeBlock->codeType() == GlobalCode) { - it = registerFile->lastGlobal(); - end = it + registerFile->numGlobals(); - while (it != end) { - printf("[global var] | %10p | %10p \n", it, (*it).v()); - ++it; - } - printf("----------------------------------------------------\n"); - } - - it = callFrame->registers() - RegisterFile::CallFrameHeaderSize - codeBlock->m_numParameters; - printf("[this] | %10p | %10p \n", it, (*it).v()); ++it; - end = it + max(codeBlock->m_numParameters - 1, 0); // - 1 to skip "this" + it = callFrame->registers() - RegisterFile::CallFrameHeaderSize - codeBlock->numParameters(); + v = (*it).jsValue(); +#if USE(JSVALUE32_64) + dataLog("[this] | %10p | %-16s 0x%llx \n", it, v.description(), JSValue::encode(v)); ++it; +#else + dataLog("[this] | %10p | %-16s %p \n", it, v.description(), JSValue::encode(v)); ++it; +#endif + end = it + max(codeBlock->numParameters() - 1, 0); // - 1 to skip "this" if (it != end) { do { - printf("[param] | %10p | %10p \n", it, (*it).v()); + v = (*it).jsValue(); +#if USE(JSVALUE32_64) + dataLog("[param] | %10p | %-16s 0x%llx \n", it, v.description(), JSValue::encode(v)); +#else + dataLog("[param] | %10p | %-16s %p \n", it, v.description(), JSValue::encode(v)); +#endif ++it; } while (it != end); } - printf("----------------------------------------------------\n"); - - printf("[CodeBlock] | %10p | %10p \n", it, (*it).v()); ++it; - printf("[ScopeChain] | %10p | %10p \n", it, (*it).v()); ++it; - printf("[CallerRegisters] | %10p | %10p \n", it, (*it).v()); ++it; - printf("[ReturnPC] | %10p | %10p \n", it, (*it).v()); ++it; - printf("[ReturnValueRegister] | %10p | %10p \n", it, (*it).v()); ++it; - printf("[ArgumentCount] | %10p | %10p \n", it, (*it).v()); ++it; - printf("[Callee] | %10p | %10p \n", it, (*it).v()); ++it; - printf("[OptionalCalleeArguments] | %10p | %10p \n", it, (*it).v()); ++it; - printf("----------------------------------------------------\n"); + dataLog("-----------------------------------------------------------------------------\n"); + dataLog("[CodeBlock] | %10p | %p \n", it, (*it).codeBlock()); ++it; + dataLog("[ScopeChain] | %10p | %p \n", it, (*it).scopeChain()); ++it; + dataLog("[CallerRegisters] | %10p | %d \n", it, (*it).i()); ++it; + dataLog("[ReturnPC] | %10p | %p \n", it, (*it).vPC()); ++it; + dataLog("[ArgumentCount] | %10p | %d \n", it, (*it).i()); ++it; + dataLog("[Callee] | %10p | %p \n", it, (*it).function()); ++it; + dataLog("-----------------------------------------------------------------------------\n"); int registerCount = 0; end = it + codeBlock->m_numVars; if (it != end) { do { - printf("[r%2d] | %10p | %10p \n", registerCount, it, (*it).v()); - ++it; - ++registerCount; - } while (it != end); - } - printf("----------------------------------------------------\n"); - - end = it + codeBlock->m_numConstants; - if (it != end) { - do { - printf("[r%2d] | %10p | %10p \n", registerCount, it, (*it).v()); + v = (*it).jsValue(); +#if USE(JSVALUE32_64) + dataLog("[r%2d] | %10p | %-16s 0x%llx \n", registerCount, it, v.description(), JSValue::encode(v)); +#else + dataLog("[r%2d] | %10p | %-16s %p \n", registerCount, it, v.description(), JSValue::encode(v)); +#endif ++it; ++registerCount; } while (it != end); } - printf("----------------------------------------------------\n"); + dataLog("-----------------------------------------------------------------------------\n"); - end = it + codeBlock->m_numCalleeRegisters - codeBlock->m_numConstants - codeBlock->m_numVars; + end = it + codeBlock->m_numCalleeRegisters - codeBlock->m_numVars; if (it != end) { do { - printf("[r%2d] | %10p | %10p \n", registerCount, it, (*it).v()); + v = (*it).jsValue(); +#if USE(JSVALUE32_64) + dataLog("[r%2d] | %10p | %-16s 0x%llx \n", registerCount, it, v.description(), JSValue::encode(v)); +#else + dataLog("[r%2d] | %10p | %-16s %p \n", registerCount, it, v.description(), JSValue::encode(v)); +#endif ++it; ++registerCount; } while (it != end); } - printf("----------------------------------------------------\n"); + dataLog("-----------------------------------------------------------------------------\n"); } #endif bool Interpreter::isOpcode(Opcode opcode) { -#if HAVE(COMPUTED_GOTO) +#if ENABLE(COMPUTED_GOTO_CLASSIC_INTERPRETER) || ENABLE(LLINT) +#if !ENABLE(LLINT) + if (!m_classicEnabled) + return opcode >= 0 && static_cast(bitwise_cast(opcode)) <= op_end; +#endif return opcode != HashTraits::emptyValue() && !HashTraits::isDeletedValue(opcode) && m_opcodeIDTable.contains(opcode); @@ -694,7 +703,7 @@ bool Interpreter::isOpcode(Opcode opcode) #endif } -NEVER_INLINE bool Interpreter::unwindCallFrame(CallFrame*& callFrame, JSValuePtr exceptionValue, unsigned& bytecodeOffset, CodeBlock*& codeBlock) +NEVER_INLINE bool Interpreter::unwindCallFrame(CallFrame*& callFrame, JSValue exceptionValue, unsigned& bytecodeOffset, CodeBlock*& codeBlock) { CodeBlock* oldCodeBlock = codeBlock; ScopeChainNode* scopeChain = callFrame->scopeChain(); @@ -702,118 +711,365 @@ NEVER_INLINE bool Interpreter::unwindCallFrame(CallFrame*& callFrame, JSValuePtr if (Debugger* debugger = callFrame->dynamicGlobalObject()->debugger()) { DebuggerCallFrame debuggerCallFrame(callFrame, exceptionValue); if (callFrame->callee()) - debugger->returnEvent(debuggerCallFrame, codeBlock->ownerNode()->sourceID(), codeBlock->ownerNode()->lastLine()); - else - debugger->didExecuteProgram(debuggerCallFrame, codeBlock->ownerNode()->sourceID(), codeBlock->ownerNode()->lastLine()); - } - - if (Profiler* profiler = *Profiler::enabledProfilerReference()) { - if (callFrame->callee()) - profiler->didExecute(callFrame, callFrame->callee()); + debugger->returnEvent(debuggerCallFrame, codeBlock->ownerExecutable()->sourceID(), codeBlock->ownerExecutable()->lastLine()); else - profiler->didExecute(callFrame, codeBlock->ownerNode()->sourceURL(), codeBlock->ownerNode()->lineNo()); + debugger->didExecuteProgram(debuggerCallFrame, codeBlock->ownerExecutable()->sourceID(), codeBlock->ownerExecutable()->lastLine()); } // If this call frame created an activation or an 'arguments' object, tear it off. if (oldCodeBlock->codeType() == FunctionCode && oldCodeBlock->needsFullScopeChain()) { - while (!scopeChain->object->isObject(&JSActivation::info)) + if (!callFrame->uncheckedR(oldCodeBlock->activationRegister()).jsValue()) { + oldCodeBlock->createActivation(callFrame); + scopeChain = callFrame->scopeChain(); + } + while (!scopeChain->object->inherits(&JSActivation::s_info)) scopeChain = scopeChain->pop(); - static_cast(scopeChain->object)->copyRegisters(callFrame->optionalCalleeArguments()); - } else if (Arguments* arguments = callFrame->optionalCalleeArguments()) { - if (!arguments->isTornOff()) - arguments->copyRegisters(); - } - if (oldCodeBlock->needsFullScopeChain()) - scopeChain->deref(); + callFrame->setScopeChain(scopeChain); + JSActivation* activation = asActivation(scopeChain->object.get()); + activation->tearOff(*scopeChain->globalData); + if (JSValue arguments = callFrame->uncheckedR(unmodifiedArgumentsRegister(oldCodeBlock->argumentsRegister())).jsValue()) + asArguments(arguments)->didTearOffActivation(callFrame->globalData(), activation); + } else if (oldCodeBlock->usesArguments() && !oldCodeBlock->isStrictMode()) { + if (JSValue arguments = callFrame->uncheckedR(unmodifiedArgumentsRegister(oldCodeBlock->argumentsRegister())).jsValue()) + asArguments(arguments)->tearOff(callFrame); + } - void* returnPC = callFrame->returnPC(); - callFrame = callFrame->callerFrame(); - if (callFrame->hasHostCallFrameFlag()) + CallFrame* callerFrame = callFrame->callerFrame(); + callFrame->globalData().topCallFrame = callerFrame; + if (callerFrame->hasHostCallFrameFlag()) return false; - codeBlock = callFrame->codeBlock(); - bytecodeOffset = bytecodeOffsetForPC(callFrame, codeBlock, returnPC); + codeBlock = callerFrame->codeBlock(); + + // Because of how the JIT records call site->bytecode offset + // information the JIT reports the bytecodeOffset for the returnPC + // to be at the beginning of the opcode that has caused the call. + // In the interpreter we have an actual return address, which is + // the beginning of next instruction to execute. To get an offset + // inside the call instruction that triggered the exception we + // have to subtract 1. +#if ENABLE(JIT) && ENABLE(CLASSIC_INTERPRETER) + if (callerFrame->globalData().canUseJIT()) + bytecodeOffset = codeBlock->bytecodeOffset(callerFrame, callFrame->returnPC()); + else + bytecodeOffset = codeBlock->bytecodeOffset(callFrame->returnVPC()) - 1; +#elif ENABLE(JIT) + bytecodeOffset = codeBlock->bytecodeOffset(callerFrame, callFrame->returnPC()); +#else + bytecodeOffset = codeBlock->bytecodeOffset(callFrame->returnVPC()) - 1; +#endif + + callFrame = callerFrame; return true; } -NEVER_INLINE HandlerInfo* Interpreter::throwException(CallFrame*& callFrame, JSValuePtr& exceptionValue, unsigned bytecodeOffset, bool explicitThrow) +static void appendSourceToError(CallFrame* callFrame, ErrorInstance* exception, unsigned bytecodeOffset) { - // Set up the exception object + exception->clearAppendSourceToMessage(); - CodeBlock* codeBlock = callFrame->codeBlock(); - if (exceptionValue.isObject()) { - JSObject* exception = asObject(exceptionValue); - if (exception->isNotAnObjectErrorStub()) { - exception = createNotAnObjectError(callFrame, static_cast(exception), bytecodeOffset, codeBlock); - exceptionValue = exception; - } else { - if (!exception->hasProperty(callFrame, Identifier(callFrame, "line")) && - !exception->hasProperty(callFrame, Identifier(callFrame, "sourceId")) && - !exception->hasProperty(callFrame, Identifier(callFrame, "sourceURL")) && - !exception->hasProperty(callFrame, Identifier(callFrame, expressionBeginOffsetPropertyName)) && - !exception->hasProperty(callFrame, Identifier(callFrame, expressionCaretOffsetPropertyName)) && - !exception->hasProperty(callFrame, Identifier(callFrame, expressionEndOffsetPropertyName))) { - if (explicitThrow) { - int startOffset = 0; - int endOffset = 0; - int divotPoint = 0; - int line = codeBlock->expressionRangeForBytecodeOffset(callFrame, bytecodeOffset, divotPoint, startOffset, endOffset); - exception->putWithAttributes(callFrame, Identifier(callFrame, "line"), jsNumber(callFrame, line), ReadOnly | DontDelete); - - // We only hit this path for error messages and throw statements, which don't have a specific failure position - // So we just give the full range of the error/throw statement. - exception->putWithAttributes(callFrame, Identifier(callFrame, expressionBeginOffsetPropertyName), jsNumber(callFrame, divotPoint - startOffset), ReadOnly | DontDelete); - exception->putWithAttributes(callFrame, Identifier(callFrame, expressionEndOffsetPropertyName), jsNumber(callFrame, divotPoint + endOffset), ReadOnly | DontDelete); - } else - exception->putWithAttributes(callFrame, Identifier(callFrame, "line"), jsNumber(callFrame, codeBlock->lineNumberForBytecodeOffset(callFrame, bytecodeOffset)), ReadOnly | DontDelete); - exception->putWithAttributes(callFrame, Identifier(callFrame, "sourceId"), jsNumber(callFrame, codeBlock->ownerNode()->sourceID()), ReadOnly | DontDelete); - exception->putWithAttributes(callFrame, Identifier(callFrame, "sourceURL"), jsOwnedString(callFrame, codeBlock->ownerNode()->sourceURL()), ReadOnly | DontDelete); - } - - if (exception->isWatchdogException()) { - while (unwindCallFrame(callFrame, exceptionValue, bytecodeOffset, codeBlock)) { - // Don't need handler checks or anything, we just want to unroll all the JS callframes possible. - } - return 0; - } - } - } + if (!callFrame->codeBlock()->hasExpressionInfo()) + return; - if (Debugger* debugger = callFrame->dynamicGlobalObject()->debugger()) { - DebuggerCallFrame debuggerCallFrame(callFrame, exceptionValue); - debugger->exception(debuggerCallFrame, codeBlock->ownerNode()->sourceID(), codeBlock->lineNumberForBytecodeOffset(callFrame, bytecodeOffset)); - } - - // If we throw in the middle of a call instruction, we need to notify - // the profiler manually that the call instruction has returned, since - // we'll never reach the relevant op_profile_did_call. - if (Profiler* profiler = *Profiler::enabledProfilerReference()) { -#if !ENABLE(JIT) - if (isCallBytecode(codeBlock->instructions()[bytecodeOffset].u.opcode)) - profiler->didExecute(callFrame, callFrame[codeBlock->instructions()[bytecodeOffset + 2].u.operand].jsValue(callFrame)); - else if (codeBlock->instructions()[bytecodeOffset + 8].u.opcode == getOpcode(op_construct)) - profiler->didExecute(callFrame, callFrame[codeBlock->instructions()[bytecodeOffset + 10].u.operand].jsValue(callFrame)); -#else - int functionRegisterIndex; - if (codeBlock->functionRegisterForBytecodeOffset(bytecodeOffset, functionRegisterIndex)) - profiler->didExecute(callFrame, callFrame[functionRegisterIndex].jsValue(callFrame)); -#endif - } + int startOffset = 0; + int endOffset = 0; + int divotPoint = 0; - // Calculate an exception handler vPC, unwinding call frames as necessary. + CodeBlock* codeBlock = callFrame->codeBlock(); + codeBlock->expressionRangeForBytecodeOffset(bytecodeOffset, divotPoint, startOffset, endOffset); + int expressionStart = divotPoint - startOffset; + int expressionStop = divotPoint + endOffset; + + if (!expressionStop || expressionStart > codeBlock->source()->length()) + return; + + JSGlobalData* globalData = &callFrame->globalData(); + JSValue jsMessage = exception->getDirect(*globalData, globalData->propertyNames->message); + if (!jsMessage || !jsMessage.isString()) + return; + + UString message = asString(jsMessage)->value(callFrame); + + if (expressionStart < expressionStop) + message = makeUString(message, " (evaluating '", codeBlock->source()->getRange(expressionStart, expressionStop), "')"); + else { + // No range information, so give a few characters of context + const StringImpl* data = codeBlock->source()->data(); + int dataLength = codeBlock->source()->length(); + int start = expressionStart; + int stop = expressionStart; + // Get up to 20 characters of context to the left and right of the divot, clamping to the line. + // then strip whitespace. + while (start > 0 && (expressionStart - start < 20) && (*data)[start - 1] != '\n') + start--; + while (start < (expressionStart - 1) && isStrWhiteSpace((*data)[start])) + start++; + while (stop < dataLength && (stop - expressionStart < 20) && (*data)[stop] != '\n') + stop++; + while (stop > expressionStart && isStrWhiteSpace((*data)[stop - 1])) + stop--; + message = makeUString(message, " (near '...", codeBlock->source()->getRange(start, stop), "...')"); + } + + exception->putDirect(*globalData, globalData->propertyNames->message, jsString(globalData, message)); +} + +static int getLineNumberForCallFrame(JSGlobalData* globalData, CallFrame* callFrame) +{ + UNUSED_PARAM(globalData); + callFrame = callFrame->removeHostCallFrameFlag(); + CodeBlock* codeBlock = callFrame->codeBlock(); + if (!codeBlock) + return -1; +#if ENABLE(CLASSIC_INTERPRETER) + if (!globalData->canUseJIT()) + return codeBlock->lineNumberForBytecodeOffset(callFrame->bytecodeOffsetForNonDFGCode() - 1); +#endif +#if ENABLE(JIT) +#if ENABLE(DFG_JIT) + if (codeBlock->getJITType() == JITCode::DFGJIT) + return codeBlock->lineNumberForBytecodeOffset(codeBlock->codeOrigin(callFrame->codeOriginIndexForDFG()).bytecodeIndex); +#endif + return codeBlock->lineNumberForBytecodeOffset(callFrame->bytecodeOffsetForNonDFGCode()); +#else + return -1; +#endif +} + +static CallFrame* getCallerInfo(JSGlobalData* globalData, CallFrame* callFrame, int& lineNumber) +{ + UNUSED_PARAM(globalData); + unsigned bytecodeOffset = 0; + lineNumber = -1; + ASSERT(!callFrame->hasHostCallFrameFlag()); + CallFrame* callerFrame = callFrame->codeBlock() ? callFrame->trueCallerFrame() : callFrame->callerFrame()->removeHostCallFrameFlag(); + bool callframeIsHost = callerFrame->addHostCallFrameFlag() == callFrame->callerFrame(); + ASSERT(!callerFrame->hasHostCallFrameFlag()); + + if (callerFrame == CallFrame::noCaller() || !callerFrame || !callerFrame->codeBlock()) + return callerFrame; + + CodeBlock* callerCodeBlock = callerFrame->codeBlock(); + +#if ENABLE(JIT) + if (!callFrame->hasReturnPC()) + callframeIsHost = true; +#endif +#if ENABLE(DFG_JIT) + if (callFrame->isInlineCallFrame()) + callframeIsHost = false; +#endif + + if (callframeIsHost) { + // Don't need to deal with inline callframes here as by definition we haven't + // inlined a call with an intervening native call frame. +#if ENABLE(CLASSIC_INTERPRETER) + if (!globalData->canUseJIT()) { + bytecodeOffset = callerFrame->bytecodeOffsetForNonDFGCode(); + lineNumber = callerCodeBlock->lineNumberForBytecodeOffset(bytecodeOffset - 1); + return callerFrame; + } +#endif +#if ENABLE(JIT) +#if ENABLE(DFG_JIT) + if (callerCodeBlock && callerCodeBlock->getJITType() == JITCode::DFGJIT) { + unsigned codeOriginIndex = callerFrame->codeOriginIndexForDFG(); + bytecodeOffset = callerCodeBlock->codeOrigin(codeOriginIndex).bytecodeIndex; + } else +#endif + bytecodeOffset = callerFrame->bytecodeOffsetForNonDFGCode(); +#endif + } else { +#if ENABLE(CLASSIC_INTERPRETER) + if (!globalData->canUseJIT()) { + bytecodeOffset = callerCodeBlock->bytecodeOffset(callFrame->returnVPC()); + lineNumber = callerCodeBlock->lineNumberForBytecodeOffset(bytecodeOffset - 1); + return callerFrame; + } +#endif +#if ENABLE(JIT) + #if ENABLE(DFG_JIT) + if (callFrame->isInlineCallFrame()) { + InlineCallFrame* icf = callFrame->inlineCallFrame(); + bytecodeOffset = icf->caller.bytecodeIndex; + if (InlineCallFrame* parentCallFrame = icf->caller.inlineCallFrame) { + FunctionExecutable* executable = static_cast(parentCallFrame->executable.get()); + CodeBlock* newCodeBlock = executable->baselineCodeBlockFor(parentCallFrame->isCall ? CodeForCall : CodeForConstruct); + ASSERT(newCodeBlock); + ASSERT(newCodeBlock->instructionCount() > bytecodeOffset); + callerCodeBlock = newCodeBlock; + } + } else if (callerCodeBlock && callerCodeBlock->getJITType() == JITCode::DFGJIT) { + CodeOrigin origin; + if (!callerCodeBlock->codeOriginForReturn(callFrame->returnPC(), origin)) + ASSERT_NOT_REACHED(); + bytecodeOffset = origin.bytecodeIndex; + if (InlineCallFrame* icf = origin.inlineCallFrame) { + FunctionExecutable* executable = static_cast(icf->executable.get()); + CodeBlock* newCodeBlock = executable->baselineCodeBlockFor(icf->isCall ? CodeForCall : CodeForConstruct); + ASSERT(newCodeBlock); + ASSERT(newCodeBlock->instructionCount() > bytecodeOffset); + callerCodeBlock = newCodeBlock; + } + } else + #endif + bytecodeOffset = callerCodeBlock->bytecodeOffset(callerFrame, callFrame->returnPC()); +#endif + } + + lineNumber = callerCodeBlock->lineNumberForBytecodeOffset(bytecodeOffset); + return callerFrame; +} + +static ALWAYS_INLINE const UString getSourceURLFromCallFrame(CallFrame* callFrame) +{ + ASSERT(!callFrame->hasHostCallFrameFlag()); +#if ENABLE(CLASSIC_INTERPRETER) +#if ENABLE(JIT) + if (callFrame->globalData().canUseJIT()) + return callFrame->codeBlock()->ownerExecutable()->sourceURL(); +#endif + return callFrame->codeBlock()->source()->url(); + +#else + return callFrame->codeBlock()->ownerExecutable()->sourceURL(); +#endif +} + +static StackFrameCodeType getStackFrameCodeType(CallFrame* callFrame) +{ + ASSERT(!callFrame->hasHostCallFrameFlag()); + + switch (callFrame->codeBlock()->codeType()) { + case EvalCode: + return StackFrameEvalCode; + case FunctionCode: + return StackFrameFunctionCode; + case GlobalCode: + return StackFrameGlobalCode; + } + ASSERT_NOT_REACHED(); + return StackFrameGlobalCode; +} + +void Interpreter::getStackTrace(JSGlobalData* globalData, Vector& results) +{ + CallFrame* callFrame = globalData->topCallFrame->removeHostCallFrameFlag(); + if (!callFrame || callFrame == CallFrame::noCaller()) + return; + int line = getLineNumberForCallFrame(globalData, callFrame); + + callFrame = callFrame->trueCallFrameFromVMCode(); + + while (callFrame && callFrame != CallFrame::noCaller()) { + UString sourceURL; + if (callFrame->codeBlock()) { + sourceURL = getSourceURLFromCallFrame(callFrame); + StackFrame s = { Strong(*globalData, callFrame->callee()), getStackFrameCodeType(callFrame), Strong(*globalData, callFrame->codeBlock()->ownerExecutable()), line, sourceURL}; + results.append(s); + } else { + StackFrame s = { Strong(*globalData, callFrame->callee()), StackFrameNativeCode, Strong(), -1, UString()}; + results.append(s); + } + callFrame = getCallerInfo(globalData, callFrame, line); + } +} + +void Interpreter::addStackTraceIfNecessary(CallFrame* callFrame, JSObject* error) +{ + JSGlobalData* globalData = &callFrame->globalData(); + ASSERT(callFrame == globalData->topCallFrame || callFrame == callFrame->lexicalGlobalObject()->globalExec() || callFrame == callFrame->dynamicGlobalObject()->globalExec()); + if (error->hasProperty(callFrame, globalData->propertyNames->stack)) + return; + + Vector stackTrace; + getStackTrace(&callFrame->globalData(), stackTrace); + + if (stackTrace.isEmpty()) + return; + + JSGlobalObject* globalObject = 0; + if (isTerminatedExecutionException(error) || isInterruptedExecutionException(error)) + globalObject = globalData->dynamicGlobalObject; + else + globalObject = error->globalObject(); + StringBuilder builder; + for (unsigned i = 0; i < stackTrace.size(); i++) { + builder.append(String(stackTrace[i].toString(globalObject->globalExec()).impl())); + if (i != stackTrace.size() - 1) + builder.append('\n'); + } + + error->putDirect(*globalData, globalData->propertyNames->stack, jsString(globalData, UString(builder.toString().impl())), ReadOnly | DontDelete); +} + +NEVER_INLINE HandlerInfo* Interpreter::throwException(CallFrame*& callFrame, JSValue& exceptionValue, unsigned bytecodeOffset) +{ + CodeBlock* codeBlock = callFrame->codeBlock(); + bool isInterrupt = false; + + ASSERT(!exceptionValue.isEmpty()); + ASSERT(!exceptionValue.isCell() || exceptionValue.asCell()); + // This shouldn't be possible (hence the assertions), but we're already in the slowest of + // slow cases, so let's harden against it anyway to be safe. + if (exceptionValue.isEmpty() || (exceptionValue.isCell() && !exceptionValue.asCell())) + exceptionValue = jsNull(); + + // Set up the exception object + if (exceptionValue.isObject()) { + JSObject* exception = asObject(exceptionValue); + + if (exception->isErrorInstance() && static_cast(exception)->appendSourceToMessage()) + appendSourceToError(callFrame, static_cast(exception), bytecodeOffset); + + if (!hasErrorInfo(callFrame, exception)) { + // FIXME: should only really be adding these properties to VM generated exceptions, + // but the inspector currently requires these for all thrown objects. + addErrorInfo(callFrame, exception, codeBlock->lineNumberForBytecodeOffset(bytecodeOffset), codeBlock->ownerExecutable()->source()); + } + + isInterrupt = isInterruptedExecutionException(exception) || isTerminatedExecutionException(exception); + } + + if (Debugger* debugger = callFrame->dynamicGlobalObject()->debugger()) { + DebuggerCallFrame debuggerCallFrame(callFrame, exceptionValue); + bool hasHandler = codeBlock->handlerForBytecodeOffset(bytecodeOffset); + debugger->exception(debuggerCallFrame, codeBlock->ownerExecutable()->sourceID(), codeBlock->lineNumberForBytecodeOffset(bytecodeOffset), hasHandler); + } + + // Calculate an exception handler vPC, unwinding call frames as necessary. HandlerInfo* handler = 0; - while (!(handler = codeBlock->handlerForBytecodeOffset(bytecodeOffset))) { - if (!unwindCallFrame(callFrame, exceptionValue, bytecodeOffset, codeBlock)) + while (isInterrupt || !(handler = codeBlock->handlerForBytecodeOffset(bytecodeOffset))) { + if (!unwindCallFrame(callFrame, exceptionValue, bytecodeOffset, codeBlock)) { + if (Profiler* profiler = *Profiler::enabledProfilerReference()) + profiler->exceptionUnwind(callFrame); + callFrame->globalData().topCallFrame = callFrame; return 0; + } } + callFrame->globalData().topCallFrame = callFrame; + + if (Profiler* profiler = *Profiler::enabledProfilerReference()) + profiler->exceptionUnwind(callFrame); - // Now unwind the scope chain within the exception handler's call frame. + // Shrink the JS stack, in case stack overflow made it huge. + Register* highWaterMark = 0; + for (CallFrame* callerFrame = callFrame; callerFrame; callerFrame = callerFrame->callerFrame()->removeHostCallFrameFlag()) { + CodeBlock* codeBlock = callerFrame->codeBlock(); + if (!codeBlock) + continue; + Register* callerHighWaterMark = callerFrame->registers() + codeBlock->m_numCalleeRegisters; + highWaterMark = max(highWaterMark, callerHighWaterMark); + } + m_registerFile.shrink(highWaterMark); + // Unwind the scope chain within the exception handler's call frame. ScopeChainNode* scopeChain = callFrame->scopeChain(); - ScopeChain sc(scopeChain); - int scopeDelta = depth(codeBlock, sc) - handler->scopeDepth; + int scopeDelta = 0; + if (!codeBlock->needsFullScopeChain() || codeBlock->codeType() != FunctionCode + || callFrame->uncheckedR(codeBlock->activationRegister()).jsValue()) + scopeDelta = depth(codeBlock, scopeChain) - handler->scopeDepth; ASSERT(scopeDelta >= 0); while (scopeDelta--) scopeChain = scopeChain->pop(); @@ -822,219 +1078,556 @@ NEVER_INLINE HandlerInfo* Interpreter::throwException(CallFrame*& callFrame, JSV return handler; } -JSValuePtr Interpreter::execute(ProgramNode* programNode, CallFrame* callFrame, ScopeChainNode* scopeChain, JSObject* thisObj, JSValuePtr* exception) +static inline JSValue checkedReturn(JSValue returnValue) +{ + ASSERT(returnValue); + return returnValue; +} + +static inline JSObject* checkedReturn(JSObject* returnValue) +{ + ASSERT(returnValue); + return returnValue; +} + +JSValue Interpreter::execute(ProgramExecutable* program, CallFrame* callFrame, ScopeChainNode* scopeChain, JSObject* thisObj) { + ASSERT(isValidThisObject(thisObj, callFrame)); ASSERT(!scopeChain->globalData->exception); + ASSERT(!callFrame->globalData().isCollectorBusy()); + if (callFrame->globalData().isCollectorBusy()) + CRASH(); + + if (m_reentryDepth >= MaxSmallThreadReentryDepth && m_reentryDepth >= callFrame->globalData().maxReentryDepth) + return checkedReturn(throwStackOverflowError(callFrame)); + + DynamicGlobalObjectScope globalObjectScope(*scopeChain->globalData, scopeChain->globalObject.get()); + Vector JSONPData; + bool parseResult; + const UString programSource = program->source().toString(); + if (programSource.isNull()) + return jsUndefined(); + if (programSource.is8Bit()) { + LiteralParser literalParser(callFrame, programSource.characters8(), programSource.length(), JSONP); + parseResult = literalParser.tryJSONPParse(JSONPData, scopeChain->globalObject->globalObjectMethodTable()->supportsRichSourceInfo(scopeChain->globalObject.get())); + } else { + LiteralParser literalParser(callFrame, programSource.characters16(), programSource.length(), JSONP); + parseResult = literalParser.tryJSONPParse(JSONPData, scopeChain->globalObject->globalObjectMethodTable()->supportsRichSourceInfo(scopeChain->globalObject.get())); + } + + if (parseResult) { + JSGlobalObject* globalObject = scopeChain->globalObject.get(); + JSValue result; + for (unsigned entry = 0; entry < JSONPData.size(); entry++) { + Vector JSONPPath; + JSONPPath.swap(JSONPData[entry].m_path); + JSValue JSONPValue = JSONPData[entry].m_value.get(); + if (JSONPPath.size() == 1 && JSONPPath[0].m_type == JSONPPathEntryTypeDeclare) { + if (globalObject->hasProperty(callFrame, JSONPPath[0].m_pathEntryName)) { + PutPropertySlot slot; + globalObject->methodTable()->put(globalObject, callFrame, JSONPPath[0].m_pathEntryName, JSONPValue, slot); + } else + globalObject->methodTable()->putDirectVirtual(globalObject, callFrame, JSONPPath[0].m_pathEntryName, JSONPValue, DontEnum | DontDelete); + // var declarations return undefined + result = jsUndefined(); + continue; + } + JSValue baseObject(globalObject); + for (unsigned i = 0; i < JSONPPath.size() - 1; i++) { + ASSERT(JSONPPath[i].m_type != JSONPPathEntryTypeDeclare); + switch (JSONPPath[i].m_type) { + case JSONPPathEntryTypeDot: { + if (i == 0) { + PropertySlot slot(globalObject); + if (!globalObject->getPropertySlot(callFrame, JSONPPath[i].m_pathEntryName, slot)) { + if (entry) + return throwError(callFrame, createUndefinedVariableError(globalObject->globalExec(), JSONPPath[i].m_pathEntryName)); + goto failedJSONP; + } + baseObject = slot.getValue(callFrame, JSONPPath[i].m_pathEntryName); + } else + baseObject = baseObject.get(callFrame, JSONPPath[i].m_pathEntryName); + if (callFrame->hadException()) + return jsUndefined(); + continue; + } + case JSONPPathEntryTypeLookup: { + baseObject = baseObject.get(callFrame, JSONPPath[i].m_pathIndex); + if (callFrame->hadException()) + return jsUndefined(); + continue; + } + default: + ASSERT_NOT_REACHED(); + return jsUndefined(); + } + } + PutPropertySlot slot; + switch (JSONPPath.last().m_type) { + case JSONPPathEntryTypeCall: { + JSValue function = baseObject.get(callFrame, JSONPPath.last().m_pathEntryName); + if (callFrame->hadException()) + return jsUndefined(); + CallData callData; + CallType callType = getCallData(function, callData); + if (callType == CallTypeNone) + return throwError(callFrame, createNotAFunctionError(callFrame, function)); + MarkedArgumentBuffer jsonArg; + jsonArg.append(JSONPValue); + JSValue thisValue = JSONPPath.size() == 1 ? jsUndefined(): baseObject; + JSONPValue = JSC::call(callFrame, function, callType, callData, thisValue, jsonArg); + if (callFrame->hadException()) + return jsUndefined(); + break; + } + case JSONPPathEntryTypeDot: { + baseObject.put(callFrame, JSONPPath.last().m_pathEntryName, JSONPValue, slot); + if (callFrame->hadException()) + return jsUndefined(); + break; + } + case JSONPPathEntryTypeLookup: { + baseObject.putByIndex(callFrame, JSONPPath.last().m_pathIndex, JSONPValue, slot.isStrictMode()); + if (callFrame->hadException()) + return jsUndefined(); + break; + } + default: + ASSERT_NOT_REACHED(); + return jsUndefined(); + } + result = JSONPValue; + } + return result; + } +failedJSONP: + JSObject* error = program->compile(callFrame, scopeChain); + if (error) + return checkedReturn(throwError(callFrame, error)); + CodeBlock* codeBlock = &program->generatedBytecode(); - if (m_reentryDepth >= MaxReentryDepth) { - *exception = createStackOverflowError(callFrame); - return jsNull(); + Register* oldEnd = m_registerFile.end(); + Register* newEnd = oldEnd + codeBlock->numParameters() + RegisterFile::CallFrameHeaderSize + codeBlock->m_numCalleeRegisters; + if (!m_registerFile.grow(newEnd)) + return checkedReturn(throwStackOverflowError(callFrame)); + + CallFrame* newCallFrame = CallFrame::create(oldEnd + codeBlock->numParameters() + RegisterFile::CallFrameHeaderSize); + ASSERT(codeBlock->numParameters() == 1); // 1 parameter for 'this'. + newCallFrame->init(codeBlock, 0, scopeChain, CallFrame::noCaller(), codeBlock->numParameters(), 0); + newCallFrame->setThisValue(thisObj); + TopCallFrameSetter topCallFrame(callFrame->globalData(), newCallFrame); + + Profiler** profiler = Profiler::enabledProfilerReference(); + if (*profiler) + (*profiler)->willExecute(callFrame, program->sourceURL(), program->lineNo()); + + JSValue result; + { + SamplingTool::CallRecord callRecord(m_sampler.get()); + + m_reentryDepth++; +#if ENABLE(JIT) + if (!classicEnabled()) + result = program->generatedJITCode().execute(&m_registerFile, newCallFrame, scopeChain->globalData); + else +#endif + result = privateExecute(Normal, &m_registerFile, newCallFrame); + + m_reentryDepth--; } - CodeBlock* codeBlock = &programNode->bytecode(scopeChain); + if (*profiler) + (*profiler)->didExecute(callFrame, program->sourceURL(), program->lineNo()); - Register* oldEnd = m_registerFile.end(); - Register* newEnd = oldEnd + codeBlock->m_numParameters + RegisterFile::CallFrameHeaderSize + codeBlock->m_numCalleeRegisters; - if (!m_registerFile.grow(newEnd)) { - *exception = createStackOverflowError(callFrame); + m_registerFile.shrink(oldEnd); + + return checkedReturn(result); +} + +JSValue Interpreter::executeCall(CallFrame* callFrame, JSObject* function, CallType callType, const CallData& callData, JSValue thisValue, const ArgList& args) +{ + ASSERT(isValidThisObject(thisValue, callFrame)); + ASSERT(!callFrame->hadException()); + ASSERT(!callFrame->globalData().isCollectorBusy()); + if (callFrame->globalData().isCollectorBusy()) return jsNull(); - } - DynamicGlobalObjectScope globalObjectScope(callFrame, scopeChain->globalObject()); + if (m_reentryDepth >= MaxSmallThreadReentryDepth && m_reentryDepth >= callFrame->globalData().maxReentryDepth) + return checkedReturn(throwStackOverflowError(callFrame)); + + Register* oldEnd = m_registerFile.end(); + ASSERT(callFrame->frameExtent() <= oldEnd || callFrame == callFrame->scopeChain()->globalObject->globalExec()); + int argCount = 1 + args.size(); // implicit "this" parameter + size_t registerOffset = argCount + RegisterFile::CallFrameHeaderSize; + + CallFrame* newCallFrame = CallFrame::create(oldEnd + registerOffset); + if (!m_registerFile.grow(newCallFrame->registers())) + return checkedReturn(throwStackOverflowError(callFrame)); + + newCallFrame->setThisValue(thisValue); + for (size_t i = 0; i < args.size(); ++i) + newCallFrame->setArgument(i, args.at(i)); + + if (callType == CallTypeJS) { + ScopeChainNode* callDataScopeChain = callData.js.scopeChain; + + DynamicGlobalObjectScope globalObjectScope(*callDataScopeChain->globalData, callDataScopeChain->globalObject.get()); + + JSObject* compileError = callData.js.functionExecutable->compileForCall(callFrame, callDataScopeChain); + if (UNLIKELY(!!compileError)) { + m_registerFile.shrink(oldEnd); + return checkedReturn(throwError(callFrame, compileError)); + } + + CodeBlock* newCodeBlock = &callData.js.functionExecutable->generatedBytecodeForCall(); + newCallFrame = slideRegisterWindowForCall(newCodeBlock, &m_registerFile, newCallFrame, 0, argCount); + if (UNLIKELY(!newCallFrame)) { + m_registerFile.shrink(oldEnd); + return checkedReturn(throwStackOverflowError(callFrame)); + } + + newCallFrame->init(newCodeBlock, 0, callDataScopeChain, callFrame->addHostCallFrameFlag(), argCount, function); + + TopCallFrameSetter topCallFrame(callFrame->globalData(), newCallFrame); + + Profiler** profiler = Profiler::enabledProfilerReference(); + if (*profiler) + (*profiler)->willExecute(callFrame, function); + + JSValue result; + { + SamplingTool::CallRecord callRecord(m_sampler.get()); + + m_reentryDepth++; +#if ENABLE(JIT) + if (!classicEnabled()) + result = callData.js.functionExecutable->generatedJITCodeForCall().execute(&m_registerFile, newCallFrame, callDataScopeChain->globalData); + else +#endif + result = privateExecute(Normal, &m_registerFile, newCallFrame); + m_reentryDepth--; + } + + if (*profiler) + (*profiler)->didExecute(callFrame, function); - JSGlobalObject* lastGlobalObject = m_registerFile.globalObject(); - JSGlobalObject* globalObject = callFrame->dynamicGlobalObject(); - globalObject->copyGlobalsTo(m_registerFile); + m_registerFile.shrink(oldEnd); + return checkedReturn(result); + } + + ASSERT(callType == CallTypeHost); + ScopeChainNode* scopeChain = callFrame->scopeChain(); + newCallFrame->init(0, 0, scopeChain, callFrame->addHostCallFrameFlag(), argCount, function); - CallFrame* newCallFrame = CallFrame::create(oldEnd + codeBlock->m_numParameters + RegisterFile::CallFrameHeaderSize); - newCallFrame[codeBlock->thisRegister()] = JSValuePtr(thisObj); - newCallFrame->init(codeBlock, 0, scopeChain, CallFrame::noCaller(), 0, 0, 0); + TopCallFrameSetter topCallFrame(callFrame->globalData(), newCallFrame); - if (codeBlock->needsFullScopeChain()) - scopeChain->ref(); + DynamicGlobalObjectScope globalObjectScope(*scopeChain->globalData, scopeChain->globalObject.get()); Profiler** profiler = Profiler::enabledProfilerReference(); if (*profiler) - (*profiler)->willExecute(newCallFrame, programNode->sourceURL(), programNode->lineNo()); + (*profiler)->willExecute(callFrame, function); - JSValuePtr result; + JSValue result; { - SamplingTool::CallRecord callRecord(m_sampler); + SamplingTool::HostCallRecord callRecord(m_sampler.get()); + result = JSValue::decode(callData.native.function(newCallFrame)); + } - m_reentryDepth++; + if (*profiler) + (*profiler)->didExecute(callFrame, function); + + m_registerFile.shrink(oldEnd); + return checkedReturn(result); +} + +JSObject* Interpreter::executeConstruct(CallFrame* callFrame, JSObject* constructor, ConstructType constructType, const ConstructData& constructData, const ArgList& args) +{ + ASSERT(!callFrame->hadException()); + ASSERT(!callFrame->globalData().isCollectorBusy()); + // We throw in this case because we have to return something "valid" but we're + // already in an invalid state. + if (callFrame->globalData().isCollectorBusy()) + return checkedReturn(throwStackOverflowError(callFrame)); + + if (m_reentryDepth >= MaxSmallThreadReentryDepth && m_reentryDepth >= callFrame->globalData().maxReentryDepth) + return checkedReturn(throwStackOverflowError(callFrame)); + + Register* oldEnd = m_registerFile.end(); + int argCount = 1 + args.size(); // implicit "this" parameter + size_t registerOffset = argCount + RegisterFile::CallFrameHeaderSize; + + if (!m_registerFile.grow(oldEnd + registerOffset)) + return checkedReturn(throwStackOverflowError(callFrame)); + + CallFrame* newCallFrame = CallFrame::create(oldEnd + registerOffset); + newCallFrame->setThisValue(jsUndefined()); + for (size_t i = 0; i < args.size(); ++i) + newCallFrame->setArgument(i, args.at(i)); + + if (constructType == ConstructTypeJS) { + ScopeChainNode* constructDataScopeChain = constructData.js.scopeChain; + + DynamicGlobalObjectScope globalObjectScope(*constructDataScopeChain->globalData, constructDataScopeChain->globalObject.get()); + + JSObject* compileError = constructData.js.functionExecutable->compileForConstruct(callFrame, constructDataScopeChain); + if (UNLIKELY(!!compileError)) { + m_registerFile.shrink(oldEnd); + return checkedReturn(throwError(callFrame, compileError)); + } + + CodeBlock* newCodeBlock = &constructData.js.functionExecutable->generatedBytecodeForConstruct(); + newCallFrame = slideRegisterWindowForCall(newCodeBlock, &m_registerFile, newCallFrame, 0, argCount); + if (UNLIKELY(!newCallFrame)) { + m_registerFile.shrink(oldEnd); + return checkedReturn(throwStackOverflowError(callFrame)); + } + + newCallFrame->init(newCodeBlock, 0, constructDataScopeChain, callFrame->addHostCallFrameFlag(), argCount, constructor); + + TopCallFrameSetter topCallFrame(callFrame->globalData(), newCallFrame); + + Profiler** profiler = Profiler::enabledProfilerReference(); + if (*profiler) + (*profiler)->willExecute(callFrame, constructor); + + JSValue result; + { + SamplingTool::CallRecord callRecord(m_sampler.get()); + + m_reentryDepth++; #if ENABLE(JIT) - if (!codeBlock->jitCode()) - JIT::compile(scopeChain->globalData, codeBlock); - result = JIT::execute(codeBlock->jitCode(), &m_registerFile, newCallFrame, scopeChain->globalData, exception); -#else - result = privateExecute(Normal, &m_registerFile, newCallFrame, exception); + if (!classicEnabled()) + result = constructData.js.functionExecutable->generatedJITCodeForConstruct().execute(&m_registerFile, newCallFrame, constructDataScopeChain->globalData); + else #endif - m_reentryDepth--; + result = privateExecute(Normal, &m_registerFile, newCallFrame); + m_reentryDepth--; + } + + if (*profiler) + (*profiler)->didExecute(callFrame, constructor); + + m_registerFile.shrink(oldEnd); + if (callFrame->hadException()) + return 0; + ASSERT(result.isObject()); + return checkedReturn(asObject(result)); } + ASSERT(constructType == ConstructTypeHost); + ScopeChainNode* scopeChain = callFrame->scopeChain(); + newCallFrame->init(0, 0, scopeChain, callFrame->addHostCallFrameFlag(), argCount, constructor); + + TopCallFrameSetter topCallFrame(callFrame->globalData(), newCallFrame); + + DynamicGlobalObjectScope globalObjectScope(*scopeChain->globalData, scopeChain->globalObject.get()); + + Profiler** profiler = Profiler::enabledProfilerReference(); if (*profiler) - (*profiler)->didExecute(callFrame, programNode->sourceURL(), programNode->lineNo()); + (*profiler)->willExecute(callFrame, constructor); - if (m_reentryDepth && lastGlobalObject && globalObject != lastGlobalObject) - lastGlobalObject->copyGlobalsTo(m_registerFile); + JSValue result; + { + SamplingTool::HostCallRecord callRecord(m_sampler.get()); + result = JSValue::decode(constructData.native.function(newCallFrame)); + } - m_registerFile.shrink(oldEnd); + if (*profiler) + (*profiler)->didExecute(callFrame, constructor); - return result; + m_registerFile.shrink(oldEnd); + if (callFrame->hadException()) + return 0; + ASSERT(result.isObject()); + return checkedReturn(asObject(result)); } -JSValuePtr Interpreter::execute(FunctionBodyNode* functionBodyNode, CallFrame* callFrame, JSFunction* function, JSObject* thisObj, const ArgList& args, ScopeChainNode* scopeChain, JSValuePtr* exception) +CallFrameClosure Interpreter::prepareForRepeatCall(FunctionExecutable* functionExecutable, CallFrame* callFrame, JSFunction* function, int argumentCountIncludingThis, ScopeChainNode* scopeChain) { ASSERT(!scopeChain->globalData->exception); + + if (callFrame->globalData().isCollectorBusy()) + return CallFrameClosure(); - if (m_reentryDepth >= MaxReentryDepth) { - *exception = createStackOverflowError(callFrame); - return jsNull(); + if (m_reentryDepth >= MaxSmallThreadReentryDepth && m_reentryDepth >= callFrame->globalData().maxReentryDepth) { + throwStackOverflowError(callFrame); + return CallFrameClosure(); } Register* oldEnd = m_registerFile.end(); - int argc = 1 + args.size(); // implicit "this" parameter + size_t registerOffset = argumentCountIncludingThis + RegisterFile::CallFrameHeaderSize; - if (!m_registerFile.grow(oldEnd + argc)) { - *exception = createStackOverflowError(callFrame); - return jsNull(); + CallFrame* newCallFrame = CallFrame::create(oldEnd + registerOffset); + if (!m_registerFile.grow(newCallFrame->registers())) { + throwStackOverflowError(callFrame); + return CallFrameClosure(); } - DynamicGlobalObjectScope globalObjectScope(callFrame, callFrame->globalData().dynamicGlobalObject ? callFrame->globalData().dynamicGlobalObject : scopeChain->globalObject()); - - CallFrame* newCallFrame = CallFrame::create(oldEnd); - size_t dst = 0; - newCallFrame[0] = JSValuePtr(thisObj); - ArgList::const_iterator end = args.end(); - for (ArgList::const_iterator it = args.begin(); it != end; ++it) - newCallFrame[++dst] = *it; + JSObject* error = functionExecutable->compileForCall(callFrame, scopeChain); + if (error) { + throwError(callFrame, error); + m_registerFile.shrink(oldEnd); + return CallFrameClosure(); + } + CodeBlock* codeBlock = &functionExecutable->generatedBytecodeForCall(); - CodeBlock* codeBlock = &functionBodyNode->bytecode(scopeChain); - newCallFrame = slideRegisterWindowForCall(codeBlock, &m_registerFile, newCallFrame, argc + RegisterFile::CallFrameHeaderSize, argc); + newCallFrame = slideRegisterWindowForCall(codeBlock, &m_registerFile, newCallFrame, 0, argumentCountIncludingThis); if (UNLIKELY(!newCallFrame)) { - *exception = createStackOverflowError(callFrame); + throwStackOverflowError(callFrame); m_registerFile.shrink(oldEnd); - return jsNull(); + return CallFrameClosure(); } - // a 0 codeBlock indicates a built-in caller - newCallFrame->init(codeBlock, 0, scopeChain, callFrame->addHostCallFrameFlag(), 0, argc, function); + newCallFrame->init(codeBlock, 0, scopeChain, callFrame->addHostCallFrameFlag(), argumentCountIncludingThis, function); + scopeChain->globalData->topCallFrame = newCallFrame; + CallFrameClosure result = { callFrame, newCallFrame, function, functionExecutable, scopeChain->globalData, oldEnd, scopeChain, codeBlock->numParameters(), argumentCountIncludingThis }; + return result; +} +JSValue Interpreter::execute(CallFrameClosure& closure) +{ + ASSERT(!closure.oldCallFrame->globalData().isCollectorBusy()); + if (closure.oldCallFrame->globalData().isCollectorBusy()) + return jsNull(); + closure.resetCallFrame(); Profiler** profiler = Profiler::enabledProfilerReference(); if (*profiler) - (*profiler)->willExecute(callFrame, function); + (*profiler)->willExecute(closure.oldCallFrame, closure.function); - JSValuePtr result; - { - SamplingTool::CallRecord callRecord(m_sampler); + TopCallFrameSetter topCallFrame(*closure.globalData, closure.newCallFrame); - m_reentryDepth++; + JSValue result; + { + SamplingTool::CallRecord callRecord(m_sampler.get()); + + m_reentryDepth++; #if ENABLE(JIT) - if (!codeBlock->jitCode()) - JIT::compile(scopeChain->globalData, codeBlock); - result = JIT::execute(codeBlock->jitCode(), &m_registerFile, newCallFrame, scopeChain->globalData, exception); -#else - result = privateExecute(Normal, &m_registerFile, newCallFrame, exception); +#if ENABLE(CLASSIC_INTERPRETER) + if (closure.newCallFrame->globalData().canUseJIT()) +#endif + result = closure.functionExecutable->generatedJITCodeForCall().execute(&m_registerFile, closure.newCallFrame, closure.globalData); +#if ENABLE(CLASSIC_INTERPRETER) + else +#endif +#endif +#if ENABLE(CLASSIC_INTERPRETER) + result = privateExecute(Normal, &m_registerFile, closure.newCallFrame); #endif m_reentryDepth--; } if (*profiler) - (*profiler)->didExecute(callFrame, function); - - m_registerFile.shrink(oldEnd); - return result; + (*profiler)->didExecute(closure.oldCallFrame, closure.function); + return checkedReturn(result); } -JSValuePtr Interpreter::execute(EvalNode* evalNode, CallFrame* callFrame, JSObject* thisObj, ScopeChainNode* scopeChain, JSValuePtr* exception) +void Interpreter::endRepeatCall(CallFrameClosure& closure) { - return execute(evalNode, callFrame, thisObj, m_registerFile.size() + evalNode->bytecode(scopeChain).m_numParameters + RegisterFile::CallFrameHeaderSize, scopeChain, exception); + closure.globalData->topCallFrame = closure.oldCallFrame; + m_registerFile.shrink(closure.oldEnd); } -JSValuePtr Interpreter::execute(EvalNode* evalNode, CallFrame* callFrame, JSObject* thisObj, int globalRegisterOffset, ScopeChainNode* scopeChain, JSValuePtr* exception) +JSValue Interpreter::execute(EvalExecutable* eval, CallFrame* callFrame, JSValue thisValue, ScopeChainNode* scopeChain, int globalRegisterOffset) { + ASSERT(isValidThisObject(thisValue, callFrame)); ASSERT(!scopeChain->globalData->exception); - - if (m_reentryDepth >= MaxReentryDepth) { - *exception = createStackOverflowError(callFrame); + ASSERT(!callFrame->globalData().isCollectorBusy()); + if (callFrame->globalData().isCollectorBusy()) return jsNull(); - } - DynamicGlobalObjectScope globalObjectScope(callFrame, callFrame->globalData().dynamicGlobalObject ? callFrame->globalData().dynamicGlobalObject : scopeChain->globalObject()); + DynamicGlobalObjectScope globalObjectScope(*scopeChain->globalData, scopeChain->globalObject.get()); - EvalCodeBlock* codeBlock = &evalNode->bytecode(scopeChain); + if (m_reentryDepth >= MaxSmallThreadReentryDepth && m_reentryDepth >= callFrame->globalData().maxReentryDepth) + return checkedReturn(throwStackOverflowError(callFrame)); - JSVariableObject* variableObject; - for (ScopeChainNode* node = scopeChain; ; node = node->next) { + JSObject* compileError = eval->compile(callFrame, scopeChain); + if (UNLIKELY(!!compileError)) + return checkedReturn(throwError(callFrame, compileError)); + EvalCodeBlock* codeBlock = &eval->generatedBytecode(); + + JSObject* variableObject; + for (ScopeChainNode* node = scopeChain; ; node = node->next.get()) { ASSERT(node); - if (node->object->isVariableObject()) { - variableObject = static_cast(node->object); + if (node->object->isVariableObject() && !node->object->isStaticScopeObject()) { + variableObject = jsCast(node->object.get()); break; } } - { // Scope for BatchedTransitionOptimizer - - BatchedTransitionOptimizer optimizer(variableObject); + unsigned numVariables = codeBlock->numVariables(); + int numFunctions = codeBlock->numberOfFunctionDecls(); + bool pushedScope = false; + if (numVariables || numFunctions) { + if (codeBlock->isStrictMode()) { + variableObject = StrictEvalActivation::create(callFrame); + scopeChain = scopeChain->push(variableObject); + pushedScope = true; + } + // Scope for BatchedTransitionOptimizer + BatchedTransitionOptimizer optimizer(callFrame->globalData(), variableObject); - const DeclarationStacks::VarStack& varStack = codeBlock->ownerNode()->varStack(); - DeclarationStacks::VarStack::const_iterator varStackEnd = varStack.end(); - for (DeclarationStacks::VarStack::const_iterator it = varStack.begin(); it != varStackEnd; ++it) { - const Identifier& ident = (*it).first; + for (unsigned i = 0; i < numVariables; ++i) { + const Identifier& ident = codeBlock->variable(i); if (!variableObject->hasProperty(callFrame, ident)) { PutPropertySlot slot; - variableObject->put(callFrame, ident, jsUndefined(), slot); + variableObject->methodTable()->put(variableObject, callFrame, ident, jsUndefined(), slot); } } - const DeclarationStacks::FunctionStack& functionStack = codeBlock->ownerNode()->functionStack(); - DeclarationStacks::FunctionStack::const_iterator functionStackEnd = functionStack.end(); - for (DeclarationStacks::FunctionStack::const_iterator it = functionStack.begin(); it != functionStackEnd; ++it) { + for (int i = 0; i < numFunctions; ++i) { + FunctionExecutable* function = codeBlock->functionDecl(i); PutPropertySlot slot; - variableObject->put(callFrame, (*it)->m_ident, (*it)->makeFunction(callFrame, scopeChain), slot); + variableObject->methodTable()->put(variableObject, callFrame, function->name(), function->make(callFrame, scopeChain), slot); } - } Register* oldEnd = m_registerFile.end(); - Register* newEnd = m_registerFile.start() + globalRegisterOffset + codeBlock->m_numCalleeRegisters; + Register* newEnd = m_registerFile.begin() + globalRegisterOffset + codeBlock->m_numCalleeRegisters; if (!m_registerFile.grow(newEnd)) { - *exception = createStackOverflowError(callFrame); - return jsNull(); + if (pushedScope) + scopeChain->pop(); + return checkedReturn(throwStackOverflowError(callFrame)); } - CallFrame* newCallFrame = CallFrame::create(m_registerFile.start() + globalRegisterOffset); + CallFrame* newCallFrame = CallFrame::create(m_registerFile.begin() + globalRegisterOffset); - // a 0 codeBlock indicates a built-in caller - newCallFrame[codeBlock->thisRegister()] = JSValuePtr(thisObj); - newCallFrame->init(codeBlock, 0, scopeChain, callFrame->addHostCallFrameFlag(), 0, 0, 0); + ASSERT(codeBlock->numParameters() == 1); // 1 parameter for 'this'. + newCallFrame->init(codeBlock, 0, scopeChain, callFrame->addHostCallFrameFlag(), codeBlock->numParameters(), 0); + newCallFrame->setThisValue(thisValue); - if (codeBlock->needsFullScopeChain()) - scopeChain->ref(); + TopCallFrameSetter topCallFrame(callFrame->globalData(), newCallFrame); Profiler** profiler = Profiler::enabledProfilerReference(); if (*profiler) - (*profiler)->willExecute(newCallFrame, evalNode->sourceURL(), evalNode->lineNo()); + (*profiler)->willExecute(callFrame, eval->sourceURL(), eval->lineNo()); - JSValuePtr result; + JSValue result; { - SamplingTool::CallRecord callRecord(m_sampler); + SamplingTool::CallRecord callRecord(m_sampler.get()); m_reentryDepth++; + #if ENABLE(JIT) - if (!codeBlock->jitCode()) - JIT::compile(scopeChain->globalData, codeBlock); - result = JIT::execute(codeBlock->jitCode(), &m_registerFile, newCallFrame, scopeChain->globalData, exception); -#else - result = privateExecute(Normal, &m_registerFile, newCallFrame, exception); +#if ENABLE(CLASSIC_INTERPRETER) + if (callFrame->globalData().canUseJIT()) +#endif + result = eval->generatedJITCode().execute(&m_registerFile, newCallFrame, scopeChain->globalData); +#if ENABLE(CLASSIC_INTERPRETER) + else +#endif +#endif +#if ENABLE(CLASSIC_INTERPRETER) + result = privateExecute(Normal, &m_registerFile, newCallFrame); #endif m_reentryDepth--; } if (*profiler) - (*profiler)->didExecute(callFrame, evalNode->sourceURL(), evalNode->lineNo()); + (*profiler)->didExecute(callFrame, eval->sourceURL(), eval->lineNo()); m_registerFile.shrink(oldEnd); - return result; + if (pushedScope) + scopeChain->pop(); + return checkedReturn(result); } NEVER_INLINE void Interpreter::debug(CallFrame* callFrame, DebugHookID debugHookID, int firstLine, int lastLine) @@ -1045,129 +1638,40 @@ NEVER_INLINE void Interpreter::debug(CallFrame* callFrame, DebugHookID debugHook switch (debugHookID) { case DidEnterCallFrame: - debugger->callEvent(callFrame, callFrame->codeBlock()->ownerNode()->sourceID(), firstLine); + debugger->callEvent(callFrame, callFrame->codeBlock()->ownerExecutable()->sourceID(), firstLine); return; case WillLeaveCallFrame: - debugger->returnEvent(callFrame, callFrame->codeBlock()->ownerNode()->sourceID(), lastLine); + debugger->returnEvent(callFrame, callFrame->codeBlock()->ownerExecutable()->sourceID(), lastLine); return; case WillExecuteStatement: - debugger->atStatement(callFrame, callFrame->codeBlock()->ownerNode()->sourceID(), firstLine); + debugger->atStatement(callFrame, callFrame->codeBlock()->ownerExecutable()->sourceID(), firstLine); return; case WillExecuteProgram: - debugger->willExecuteProgram(callFrame, callFrame->codeBlock()->ownerNode()->sourceID(), firstLine); + debugger->willExecuteProgram(callFrame, callFrame->codeBlock()->ownerExecutable()->sourceID(), firstLine); return; case DidExecuteProgram: - debugger->didExecuteProgram(callFrame, callFrame->codeBlock()->ownerNode()->sourceID(), lastLine); + debugger->didExecuteProgram(callFrame, callFrame->codeBlock()->ownerExecutable()->sourceID(), lastLine); return; case DidReachBreakpoint: - debugger->didReachBreakpoint(callFrame, callFrame->codeBlock()->ownerNode()->sourceID(), lastLine); + debugger->didReachBreakpoint(callFrame, callFrame->codeBlock()->ownerExecutable()->sourceID(), lastLine); return; } } - -void Interpreter::resetTimeoutCheck() -{ - m_ticksUntilNextTimeoutCheck = initialTickCountThreshold; - m_timeAtLastCheckTimeout = 0; - m_timeExecuting = 0; -} - -// Returns the time the current thread has spent executing, in milliseconds. -static inline unsigned getCPUTime() -{ -#if PLATFORM(DARWIN) - mach_msg_type_number_t infoCount = THREAD_BASIC_INFO_COUNT; - thread_basic_info_data_t info; - - // Get thread information - mach_port_t threadPort = mach_thread_self(); - thread_info(threadPort, THREAD_BASIC_INFO, reinterpret_cast(&info), &infoCount); - mach_port_deallocate(mach_task_self(), threadPort); - - unsigned time = info.user_time.seconds * 1000 + info.user_time.microseconds / 1000; - time += info.system_time.seconds * 1000 + info.system_time.microseconds / 1000; - - return time; -#elif HAVE(SYS_TIME_H) - // FIXME: This should probably use getrusage with the RUSAGE_THREAD flag. - struct timeval tv; - gettimeofday(&tv, 0); - return tv.tv_sec * 1000 + tv.tv_usec / 1000; -#elif PLATFORM(QT) - QDateTime t = QDateTime::currentDateTime(); - return t.toTime_t() * 1000 + t.time().msec(); -#elif PLATFORM(WIN_OS) - union { - FILETIME fileTime; - unsigned long long fileTimeAsLong; - } userTime, kernelTime; - - // GetThreadTimes won't accept NULL arguments so we pass these even though - // they're not used. - FILETIME creationTime, exitTime; - - GetThreadTimes(GetCurrentThread(), &creationTime, &exitTime, &kernelTime.fileTime, &userTime.fileTime); - - return userTime.fileTimeAsLong / 10000 + kernelTime.fileTimeAsLong / 10000; -#else -#error Platform does not have getCurrentTime function -#endif -} - -// We have to return a JSValue here, gcc seems to produce worse code if -// we attempt to return a bool -ALWAYS_INLINE bool Interpreter::checkTimeout(JSGlobalObject* globalObject) -{ - unsigned currentTime = getCPUTime(); - - if (!m_timeAtLastCheckTimeout) { - // Suspicious amount of looping in a script -- start timing it - m_timeAtLastCheckTimeout = currentTime; - return false; - } - - unsigned timeDiff = currentTime - m_timeAtLastCheckTimeout; - - if (timeDiff == 0) - timeDiff = 1; - - m_timeExecuting += timeDiff; - m_timeAtLastCheckTimeout = currentTime; - - // Adjust the tick threshold so we get the next checkTimeout call in the interval specified in - // preferredScriptCheckTimeInterval - m_ticksUntilNextTimeoutCheck = static_cast((static_cast(preferredScriptCheckTimeInterval) / timeDiff) * m_ticksUntilNextTimeoutCheck); - // If the new threshold is 0 reset it to the default threshold. This can happen if the timeDiff is higher than the - // preferred script check time interval. - if (m_ticksUntilNextTimeoutCheck == 0) - m_ticksUntilNextTimeoutCheck = initialTickCountThreshold; - - if (globalObject->shouldInterruptScriptBeforeTimeout()) - return true; - - if (m_timeoutTime && m_timeExecuting > m_timeoutTime) { - if (globalObject->shouldInterruptScript()) - return true; - - resetTimeoutCheck(); - } - return false; -} - +#if ENABLE(CLASSIC_INTERPRETER) NEVER_INLINE ScopeChainNode* Interpreter::createExceptionScope(CallFrame* callFrame, const Instruction* vPC) { - int dst = (++vPC)->u.operand; + int dst = vPC[1].u.operand; CodeBlock* codeBlock = callFrame->codeBlock(); - Identifier& property = codeBlock->identifier((++vPC)->u.operand); - JSValuePtr value = callFrame[(++vPC)->u.operand].jsValue(callFrame); - JSObject* scope = new (callFrame) JSStaticScopeObject(callFrame, property, value, DontDelete); - callFrame[dst] = JSValuePtr(scope); + Identifier& property = codeBlock->identifier(vPC[2].u.operand); + JSValue value = callFrame->r(vPC[3].u.operand).jsValue(); + JSObject* scope = JSStaticScopeObject::create(callFrame, property, value, DontDelete); + callFrame->uncheckedR(dst) = JSValue(scope); return callFrame->scopeChain()->push(scope); } -NEVER_INLINE void Interpreter::tryCachePutByID(CallFrame* callFrame, CodeBlock* codeBlock, Instruction* vPC, JSValuePtr baseValue, const PutPropertySlot& slot) +NEVER_INLINE void Interpreter::tryCachePutByID(CallFrame* callFrame, CodeBlock* codeBlock, Instruction* vPC, JSValue baseValue, const PutPropertySlot& slot) { // Recursive invocation may already have specialized this instruction. if (vPC[0].u.opcode != getOpcode(op_put_by_id)) @@ -1182,20 +1686,20 @@ NEVER_INLINE void Interpreter::tryCachePutByID(CallFrame* callFrame, CodeBlock* return; } - JSCell* baseCell = asCell(baseValue); + JSCell* baseCell = baseValue.asCell(); Structure* structure = baseCell->structure(); - if (structure->isDictionary()) { + if (structure->isUncacheableDictionary() || structure->typeInfo().prohibitsPropertyCaching()) { vPC[0] = getOpcode(op_put_by_id_generic); return; } // Cache miss: record Structure to compare against next time. - Structure* lastStructure = vPC[4].u.structure; + Structure* lastStructure = vPC[4].u.structure.get(); if (structure != lastStructure) { // First miss: record Structure to compare against next time. if (!lastStructure) { - vPC[4] = structure; + vPC[4].u.structure.set(callFrame->globalData(), codeBlock->ownerExecutable(), structure); return; } @@ -1214,56 +1718,39 @@ NEVER_INLINE void Interpreter::tryCachePutByID(CallFrame* callFrame, CodeBlock* // Structure transition, cache transition info if (slot.type() == PutPropertySlot::NewProperty) { + if (structure->isDictionary()) { + vPC[0] = getOpcode(op_put_by_id_generic); + return; + } + + // put_by_id_transition checks the prototype chain for setters. + normalizePrototypeChain(callFrame, baseCell); + JSCell* owner = codeBlock->ownerExecutable(); + JSGlobalData& globalData = callFrame->globalData(); + // Get the prototype here because the call to prototypeChain could cause a + // GC allocation, which we don't want to happen while we're in the middle of + // initializing the union. + StructureChain* prototypeChain = structure->prototypeChain(callFrame); vPC[0] = getOpcode(op_put_by_id_transition); - vPC[4] = structure->previousID(); - vPC[5] = structure; - vPC[6] = structure->prototypeChain(callFrame); + vPC[4].u.structure.set(globalData, owner, structure->previousID()); + vPC[5].u.structure.set(globalData, owner, structure); + vPC[6].u.structureChain.set(callFrame->globalData(), codeBlock->ownerExecutable(), prototypeChain); + ASSERT(vPC[6].u.structureChain); vPC[7] = slot.cachedOffset(); - codeBlock->refStructures(vPC); return; } vPC[0] = getOpcode(op_put_by_id_replace); vPC[5] = slot.cachedOffset(); - codeBlock->refStructures(vPC); } -NEVER_INLINE void Interpreter::uncachePutByID(CodeBlock* codeBlock, Instruction* vPC) +NEVER_INLINE void Interpreter::uncachePutByID(CodeBlock*, Instruction* vPC) { - codeBlock->derefStructures(vPC); vPC[0] = getOpcode(op_put_by_id); vPC[4] = 0; } -static size_t countPrototypeChainEntriesAndCheckForProxies(CallFrame* callFrame, JSValuePtr baseValue, const PropertySlot& slot) -{ - JSCell* cell = asCell(baseValue); - size_t count = 0; - - while (slot.slotBase() != cell) { - JSValuePtr v = cell->structure()->prototypeForLookup(callFrame); - - // If we didn't find slotBase in baseValue's prototype chain, then baseValue - // must be a proxy for another object. - - if (v.isNull()) - return 0; - - cell = asCell(v); - - // Since we're accessing a prototype in a loop, it's a good bet that it - // should not be treated as a dictionary. - if (cell->structure()->isDictionary()) - asObject(cell)->setStructure(Structure::fromDictionaryTransition(cell->structure())); - - ++count; - } - - ASSERT(count); - return count; -} - -NEVER_INLINE void Interpreter::tryCacheGetByID(CallFrame* callFrame, CodeBlock* codeBlock, Instruction* vPC, JSValuePtr baseValue, const Identifier& propertyName, const PropertySlot& slot) +NEVER_INLINE void Interpreter::tryCacheGetByID(CallFrame* callFrame, CodeBlock* codeBlock, Instruction* vPC, JSValue baseValue, const Identifier& propertyName, const PropertySlot& slot) { // Recursive invocation may already have specialized this instruction. if (vPC[0].u.opcode != getOpcode(op_get_by_id)) @@ -1291,19 +1778,19 @@ NEVER_INLINE void Interpreter::tryCacheGetByID(CallFrame* callFrame, CodeBlock* return; } - Structure* structure = asCell(baseValue)->structure(); + Structure* structure = baseValue.asCell()->structure(); - if (structure->isDictionary()) { + if (structure->isUncacheableDictionary() || structure->typeInfo().prohibitsPropertyCaching()) { vPC[0] = getOpcode(op_get_by_id_generic); return; } // Cache miss - Structure* lastStructure = vPC[4].u.structure; + Structure* lastStructure = vPC[4].u.structure.get(); if (structure != lastStructure) { // First miss: record Structure to compare against next time. if (!lastStructure) { - vPC[4] = structure; + vPC[4].u.structure.set(callFrame->globalData(), codeBlock->ownerExecutable(), structure); return; } @@ -1315,10 +1802,25 @@ NEVER_INLINE void Interpreter::tryCacheGetByID(CallFrame* callFrame, CodeBlock* // Cache hit: Specialize instruction and ref Structures. if (slot.slotBase() == baseValue) { - vPC[0] = getOpcode(op_get_by_id_self); - vPC[5] = slot.cachedOffset(); + switch (slot.cachedPropertyType()) { + case PropertySlot::Getter: + vPC[0] = getOpcode(op_get_by_id_getter_self); + vPC[5] = slot.cachedOffset(); + break; + case PropertySlot::Custom: + vPC[0] = getOpcode(op_get_by_id_custom_self); + vPC[5] = slot.customGetter(); + break; + default: + vPC[0] = getOpcode(op_get_by_id_self); + vPC[5] = slot.cachedOffset(); + break; + } + return; + } - codeBlock->refStructures(vPC); + if (structure->isDictionary()) { + vPC[0] = getOpcode(op_get_by_id_generic); return; } @@ -1326,75 +1828,119 @@ NEVER_INLINE void Interpreter::tryCacheGetByID(CallFrame* callFrame, CodeBlock* ASSERT(slot.slotBase().isObject()); JSObject* baseObject = asObject(slot.slotBase()); + size_t offset = slot.cachedOffset(); // Since we're accessing a prototype in a loop, it's a good bet that it // should not be treated as a dictionary. - if (baseObject->structure()->isDictionary()) - baseObject->setStructure(Structure::fromDictionaryTransition(baseObject->structure())); - - vPC[0] = getOpcode(op_get_by_id_proto); - vPC[5] = baseObject->structure(); - vPC[6] = slot.cachedOffset(); + if (baseObject->structure()->isDictionary()) { + baseObject->flattenDictionaryObject(callFrame->globalData()); + offset = baseObject->structure()->get(callFrame->globalData(), propertyName); + } - codeBlock->refStructures(vPC); + ASSERT(!baseObject->structure()->isUncacheableDictionary()); + + switch (slot.cachedPropertyType()) { + case PropertySlot::Getter: + vPC[0] = getOpcode(op_get_by_id_getter_proto); + vPC[6] = offset; + break; + case PropertySlot::Custom: + vPC[0] = getOpcode(op_get_by_id_custom_proto); + vPC[6] = slot.customGetter(); + break; + default: + vPC[0] = getOpcode(op_get_by_id_proto); + vPC[6] = offset; + break; + } + vPC[5].u.structure.set(callFrame->globalData(), codeBlock->ownerExecutable(), baseObject->structure()); return; } - size_t count = countPrototypeChainEntriesAndCheckForProxies(callFrame, baseValue, slot); + size_t offset = slot.cachedOffset(); + size_t count = normalizePrototypeChain(callFrame, baseValue, slot.slotBase(), propertyName, offset); if (!count) { vPC[0] = getOpcode(op_get_by_id_generic); return; } - vPC[0] = getOpcode(op_get_by_id_chain); - vPC[4] = structure; - vPC[5] = structure->prototypeChain(callFrame); + + StructureChain* prototypeChain = structure->prototypeChain(callFrame); + switch (slot.cachedPropertyType()) { + case PropertySlot::Getter: + vPC[0] = getOpcode(op_get_by_id_getter_chain); + vPC[7] = offset; + break; + case PropertySlot::Custom: + vPC[0] = getOpcode(op_get_by_id_custom_chain); + vPC[7] = slot.customGetter(); + break; + default: + vPC[0] = getOpcode(op_get_by_id_chain); + vPC[7] = offset; + break; + } + vPC[4].u.structure.set(callFrame->globalData(), codeBlock->ownerExecutable(), structure); + vPC[5].u.structureChain.set(callFrame->globalData(), codeBlock->ownerExecutable(), prototypeChain); vPC[6] = count; - vPC[7] = slot.cachedOffset(); - codeBlock->refStructures(vPC); } -NEVER_INLINE void Interpreter::uncacheGetByID(CodeBlock* codeBlock, Instruction* vPC) +NEVER_INLINE void Interpreter::uncacheGetByID(CodeBlock*, Instruction* vPC) { - codeBlock->derefStructures(vPC); vPC[0] = getOpcode(op_get_by_id); vPC[4] = 0; } -JSValuePtr Interpreter::privateExecute(ExecutionFlag flag, RegisterFile* registerFile, CallFrame* callFrame, JSValuePtr* exception) +#endif // ENABLE(CLASSIC_INTERPRETER) + +JSValue Interpreter::privateExecute(ExecutionFlag flag, RegisterFile* registerFile, CallFrame* callFrame) { // One-time initialization of our address tables. We have to put this code // here because our labels are only in scope inside this function. - if (flag == InitializeAndReturn) { - #if HAVE(COMPUTED_GOTO) - #define ADD_BYTECODE(id, length) m_opcodeTable[id] = &&id; - FOR_EACH_OPCODE_ID(ADD_BYTECODE); - #undef ADD_BYTECODE - - #define ADD_OPCODE_ID(id, length) m_opcodeIDTable.add(&&id, id); - FOR_EACH_OPCODE_ID(ADD_OPCODE_ID); - #undef ADD_OPCODE_ID - ASSERT(m_opcodeIDTable.size() == numOpcodeIDs); - #endif // HAVE(COMPUTED_GOTO) - return noValue(); + if (UNLIKELY(flag == InitializeAndReturn)) { + #if ENABLE(COMPUTED_GOTO_CLASSIC_INTERPRETER) + #define LIST_OPCODE_LABEL(id, length) &&id, + static Opcode labels[] = { FOR_EACH_OPCODE_ID(LIST_OPCODE_LABEL) }; + for (size_t i = 0; i < WTF_ARRAY_LENGTH(labels); ++i) + m_opcodeTable[i] = labels[i]; + #undef LIST_OPCODE_LABEL + #endif // ENABLE(COMPUTED_GOTO_CLASSIC_INTERPRETER) + return JSValue(); } - + + ASSERT(m_initialized); + ASSERT(m_classicEnabled); + #if ENABLE(JIT) - // Currently with CTI enabled we never interpret functions - ASSERT_NOT_REACHED(); +#if ENABLE(CLASSIC_INTERPRETER) + // Mixing Interpreter + JIT is not supported. + if (callFrame->globalData().canUseJIT()) +#endif + ASSERT_NOT_REACHED(); #endif +#if !ENABLE(CLASSIC_INTERPRETER) + UNUSED_PARAM(registerFile); + UNUSED_PARAM(callFrame); + return JSValue(); +#else + + ASSERT(callFrame->globalData().topCallFrame == callFrame); + JSGlobalData* globalData = &callFrame->globalData(); - JSValuePtr exceptionValue = noValue(); + JSValue exceptionValue; HandlerInfo* handler = 0; + CallFrame** topCallFrameSlot = &globalData->topCallFrame; - Instruction* vPC = callFrame->codeBlock()->instructions().begin(); + CodeBlock* codeBlock = callFrame->codeBlock(); + Instruction* vPC = codeBlock->instructions().begin(); Profiler** enabledProfilerReference = Profiler::enabledProfilerReference(); - unsigned tickCount = m_ticksUntilNextTimeoutCheck + 1; + unsigned tickCount = globalData->timeoutChecker.ticksUntilNextCheck(); + JSValue functionReturnValue; #define CHECK_FOR_EXCEPTION() \ do { \ - if (UNLIKELY(globalData->exception != noValue())) { \ + if (UNLIKELY(globalData->exception != JSValue())) { \ exceptionValue = globalData->exception; \ goto vm_throw; \ } \ @@ -1406,35 +1952,44 @@ JSValuePtr Interpreter::privateExecute(ExecutionFlag flag, RegisterFile* registe #define CHECK_FOR_TIMEOUT() \ if (!--tickCount) { \ - if (checkTimeout(callFrame->dynamicGlobalObject())) { \ + if (globalData->terminator.shouldTerminate() || globalData->timeoutChecker.didTimeOut(callFrame)) { \ exceptionValue = jsNull(); \ goto vm_throw; \ } \ - tickCount = m_ticksUntilNextTimeoutCheck; \ + tickCount = globalData->timeoutChecker.ticksUntilNextCheck(); \ } #if ENABLE(OPCODE_SAMPLING) #define SAMPLE(codeBlock, vPC) m_sampler->sample(codeBlock, vPC) - #define CTI_SAMPLER ARG_globalData->interpreter->sampler() #else #define SAMPLE(codeBlock, vPC) - #define CTI_SAMPLER 0 #endif -#if HAVE(COMPUTED_GOTO) - #define NEXT_INSTRUCTION() SAMPLE(callFrame->codeBlock(), vPC); goto *vPC->u.opcode +#define UPDATE_BYTECODE_OFFSET() \ + do {\ + callFrame->setBytecodeOffsetForNonDFGCode(vPC - codeBlock->instructions().data() + 1);\ + } while (0) + +#if ENABLE(COMPUTED_GOTO_CLASSIC_INTERPRETER) + #define NEXT_INSTRUCTION() SAMPLE(codeBlock, vPC); goto *vPC->u.opcode #if ENABLE(OPCODE_STATS) - #define DEFINE_OPCODE(opcode) opcode: OpcodeStats::recordInstruction(opcode); + #define DEFINE_OPCODE(opcode) \ + opcode:\ + OpcodeStats::recordInstruction(opcode);\ + UPDATE_BYTECODE_OFFSET(); #else - #define DEFINE_OPCODE(opcode) opcode: + #define DEFINE_OPCODE(opcode) opcode: UPDATE_BYTECODE_OFFSET(); #endif NEXT_INSTRUCTION(); #else - #define NEXT_INSTRUCTION() SAMPLE(callFrame->codeBlock(), vPC); goto interpreterLoopStart + #define NEXT_INSTRUCTION() SAMPLE(codeBlock, vPC); goto interpreterLoopStart #if ENABLE(OPCODE_STATS) - #define DEFINE_OPCODE(opcode) case opcode: OpcodeStats::recordInstruction(opcode); + #define DEFINE_OPCODE(opcode) \ + case opcode:\ + OpcodeStats::recordInstruction(opcode);\ + UPDATE_BYTECODE_OFFSET(); #else - #define DEFINE_OPCODE(opcode) case opcode: + #define DEFINE_OPCODE(opcode) case opcode: UPDATE_BYTECODE_OFFSET(); #endif while (1) { // iterator loop begins interpreterLoopStart:; @@ -1447,10 +2002,10 @@ JSValuePtr Interpreter::privateExecute(ExecutionFlag flag, RegisterFile* registe Constructs a new empty Object instance using the original constructor, and puts the result in register dst. */ - int dst = (++vPC)->u.operand; - callFrame[dst] = JSValuePtr(constructEmptyObject(callFrame)); + int dst = vPC[1].u.operand; + callFrame->uncheckedR(dst) = JSValue(constructEmptyObject(callFrame)); - ++vPC; + vPC += OPCODE_LENGTH(op_new_object); NEXT_INSTRUCTION(); } DEFINE_OPCODE(op_new_array) { @@ -1461,13 +2016,27 @@ JSValuePtr Interpreter::privateExecute(ExecutionFlag flag, RegisterFile* registe The array will contain argCount elements with values taken from registers starting at register firstArg. */ - int dst = (++vPC)->u.operand; - int firstArg = (++vPC)->u.operand; - int argCount = (++vPC)->u.operand; - ArgList args(callFrame->registers() + firstArg, argCount); - callFrame[dst] = JSValuePtr(constructArray(callFrame, args)); + int dst = vPC[1].u.operand; + int firstArg = vPC[2].u.operand; + int argCount = vPC[3].u.operand; + callFrame->uncheckedR(dst) = JSValue(constructArray(callFrame, reinterpret_cast(&callFrame->registers()[firstArg]), argCount)); - ++vPC; + vPC += OPCODE_LENGTH(op_new_array); + NEXT_INSTRUCTION(); + } + DEFINE_OPCODE(op_new_array_buffer) { + /* new_array_buffer dst(r) index(n) argCount(n) + + Constructs a new Array instance using the original + constructor, and puts the result in register dst. + The array be initialized with the values from constantBuffer[index] + */ + int dst = vPC[1].u.operand; + int firstArg = vPC[2].u.operand; + int argCount = vPC[3].u.operand; + callFrame->uncheckedR(dst) = JSValue(constructArray(callFrame, codeBlock->constantBuffer(firstArg), argCount)); + + vPC += OPCODE_LENGTH(op_new_array); NEXT_INSTRUCTION(); } DEFINE_OPCODE(op_new_regexp) { @@ -1477,11 +2046,15 @@ JSValuePtr Interpreter::privateExecute(ExecutionFlag flag, RegisterFile* registe constructor from regexp regExp, and puts the result in register dst. */ - int dst = (++vPC)->u.operand; - int regExp = (++vPC)->u.operand; - callFrame[dst] = JSValuePtr(new (globalData) RegExpObject(callFrame->scopeChain()->globalObject()->regExpStructure(), callFrame->codeBlock()->regexp(regExp))); + int dst = vPC[1].u.operand; + RegExp* regExp = codeBlock->regexp(vPC[2].u.operand); + if (!regExp->isValid()) { + exceptionValue = createSyntaxError(callFrame, "Invalid flags supplied to RegExp constructor."); + goto vm_throw; + } + callFrame->uncheckedR(dst) = JSValue(RegExpObject::create(*globalData, callFrame->lexicalGlobalObject(), callFrame->scopeChain()->globalObject->regExpStructure(), regExp)); - ++vPC; + vPC += OPCODE_LENGTH(op_new_regexp); NEXT_INSTRUCTION(); } DEFINE_OPCODE(op_mov) { @@ -1489,11 +2062,12 @@ JSValuePtr Interpreter::privateExecute(ExecutionFlag flag, RegisterFile* registe Copies register src to register dst. */ - int dst = (++vPC)->u.operand; - int src = (++vPC)->u.operand; - callFrame[dst] = callFrame[src]; + int dst = vPC[1].u.operand; + int src = vPC[2].u.operand; + + callFrame->uncheckedR(dst) = callFrame->r(src); - ++vPC; + vPC += OPCODE_LENGTH(op_mov); NEXT_INSTRUCTION(); } DEFINE_OPCODE(op_eq) { @@ -1503,18 +2077,18 @@ JSValuePtr Interpreter::privateExecute(ExecutionFlag flag, RegisterFile* registe as with the ECMAScript '==' operator, and puts the result as a boolean in register dst. */ - int dst = (++vPC)->u.operand; - JSValuePtr src1 = callFrame[(++vPC)->u.operand].jsValue(callFrame); - JSValuePtr src2 = callFrame[(++vPC)->u.operand].jsValue(callFrame); - if (JSFastMath::canDoFastBitwiseOperations(src1, src2)) - callFrame[dst] = JSFastMath::equal(src1, src2); + int dst = vPC[1].u.operand; + JSValue src1 = callFrame->r(vPC[2].u.operand).jsValue(); + JSValue src2 = callFrame->r(vPC[3].u.operand).jsValue(); + if (src1.isInt32() && src2.isInt32()) + callFrame->uncheckedR(dst) = jsBoolean(src1.asInt32() == src2.asInt32()); else { - JSValuePtr result = jsBoolean(JSValuePtr::equalSlowCase(callFrame, src1, src2)); + JSValue result = jsBoolean(JSValue::equalSlowCase(callFrame, src1, src2)); CHECK_FOR_EXCEPTION(); - callFrame[dst] = result; + callFrame->uncheckedR(dst) = result; } - ++vPC; + vPC += OPCODE_LENGTH(op_eq); NEXT_INSTRUCTION(); } DEFINE_OPCODE(op_eq_null) { @@ -1523,17 +2097,17 @@ JSValuePtr Interpreter::privateExecute(ExecutionFlag flag, RegisterFile* registe Checks whether register src is null, as with the ECMAScript '!=' operator, and puts the result as a boolean in register dst. */ - int dst = (++vPC)->u.operand; - JSValuePtr src = callFrame[(++vPC)->u.operand].jsValue(callFrame); + int dst = vPC[1].u.operand; + JSValue src = callFrame->r(vPC[2].u.operand).jsValue(); if (src.isUndefinedOrNull()) { - callFrame[dst] = jsBoolean(true); - ++vPC; + callFrame->uncheckedR(dst) = jsBoolean(true); + vPC += OPCODE_LENGTH(op_eq_null); NEXT_INSTRUCTION(); } - callFrame[dst] = jsBoolean(src.isCell() && src.asCell()->structure()->typeInfo().masqueradesAsUndefined()); - ++vPC; + callFrame->uncheckedR(dst) = jsBoolean(src.isCell() && src.asCell()->structure()->typeInfo().masqueradesAsUndefined()); + vPC += OPCODE_LENGTH(op_eq_null); NEXT_INSTRUCTION(); } DEFINE_OPCODE(op_neq) { @@ -1543,18 +2117,18 @@ JSValuePtr Interpreter::privateExecute(ExecutionFlag flag, RegisterFile* registe equal, as with the ECMAScript '!=' operator, and puts the result as a boolean in register dst. */ - int dst = (++vPC)->u.operand; - JSValuePtr src1 = callFrame[(++vPC)->u.operand].jsValue(callFrame); - JSValuePtr src2 = callFrame[(++vPC)->u.operand].jsValue(callFrame); - if (JSFastMath::canDoFastBitwiseOperations(src1, src2)) - callFrame[dst] = JSFastMath::notEqual(src1, src2); + int dst = vPC[1].u.operand; + JSValue src1 = callFrame->r(vPC[2].u.operand).jsValue(); + JSValue src2 = callFrame->r(vPC[3].u.operand).jsValue(); + if (src1.isInt32() && src2.isInt32()) + callFrame->uncheckedR(dst) = jsBoolean(src1.asInt32() != src2.asInt32()); else { - JSValuePtr result = jsBoolean(!JSValuePtr::equalSlowCase(callFrame, src1, src2)); + JSValue result = jsBoolean(!JSValue::equalSlowCase(callFrame, src1, src2)); CHECK_FOR_EXCEPTION(); - callFrame[dst] = result; + callFrame->uncheckedR(dst) = result; } - ++vPC; + vPC += OPCODE_LENGTH(op_neq); NEXT_INSTRUCTION(); } DEFINE_OPCODE(op_neq_null) { @@ -1563,17 +2137,17 @@ JSValuePtr Interpreter::privateExecute(ExecutionFlag flag, RegisterFile* registe Checks whether register src is not null, as with the ECMAScript '!=' operator, and puts the result as a boolean in register dst. */ - int dst = (++vPC)->u.operand; - JSValuePtr src = callFrame[(++vPC)->u.operand].jsValue(callFrame); + int dst = vPC[1].u.operand; + JSValue src = callFrame->r(vPC[2].u.operand).jsValue(); if (src.isUndefinedOrNull()) { - callFrame[dst] = jsBoolean(false); - ++vPC; + callFrame->uncheckedR(dst) = jsBoolean(false); + vPC += OPCODE_LENGTH(op_neq_null); NEXT_INSTRUCTION(); } - callFrame[dst] = jsBoolean(!src.isCell() || !asCell(src)->structure()->typeInfo().masqueradesAsUndefined()); - ++vPC; + callFrame->uncheckedR(dst) = jsBoolean(!src.isCell() || !src.asCell()->structure()->typeInfo().masqueradesAsUndefined()); + vPC += OPCODE_LENGTH(op_neq_null); NEXT_INSTRUCTION(); } DEFINE_OPCODE(op_stricteq) { @@ -1583,12 +2157,14 @@ JSValuePtr Interpreter::privateExecute(ExecutionFlag flag, RegisterFile* registe equal, as with the ECMAScript '===' operator, and puts the result as a boolean in register dst. */ - int dst = (++vPC)->u.operand; - JSValuePtr src1 = callFrame[(++vPC)->u.operand].jsValue(callFrame); - JSValuePtr src2 = callFrame[(++vPC)->u.operand].jsValue(callFrame); - callFrame[dst] = jsBoolean(JSValuePtr::strictEqual(src1, src2)); + int dst = vPC[1].u.operand; + JSValue src1 = callFrame->r(vPC[2].u.operand).jsValue(); + JSValue src2 = callFrame->r(vPC[3].u.operand).jsValue(); + bool result = JSValue::strictEqual(callFrame, src1, src2); + CHECK_FOR_EXCEPTION(); + callFrame->uncheckedR(dst) = jsBoolean(result); - ++vPC; + vPC += OPCODE_LENGTH(op_stricteq); NEXT_INSTRUCTION(); } DEFINE_OPCODE(op_nstricteq) { @@ -1598,12 +2174,14 @@ JSValuePtr Interpreter::privateExecute(ExecutionFlag flag, RegisterFile* registe strictly equal, as with the ECMAScript '!==' operator, and puts the result as a boolean in register dst. */ - int dst = (++vPC)->u.operand; - JSValuePtr src1 = callFrame[(++vPC)->u.operand].jsValue(callFrame); - JSValuePtr src2 = callFrame[(++vPC)->u.operand].jsValue(callFrame); - callFrame[dst] = jsBoolean(!JSValuePtr::strictEqual(src1, src2)); + int dst = vPC[1].u.operand; + JSValue src1 = callFrame->r(vPC[2].u.operand).jsValue(); + JSValue src2 = callFrame->r(vPC[3].u.operand).jsValue(); + bool result = !JSValue::strictEqual(callFrame, src1, src2); + CHECK_FOR_EXCEPTION(); + callFrame->uncheckedR(dst) = jsBoolean(result); - ++vPC; + vPC += OPCODE_LENGTH(op_nstricteq); NEXT_INSTRUCTION(); } DEFINE_OPCODE(op_less) { @@ -1613,14 +2191,14 @@ JSValuePtr Interpreter::privateExecute(ExecutionFlag flag, RegisterFile* registe with the ECMAScript '<' operator, and puts the result as a boolean in register dst. */ - int dst = (++vPC)->u.operand; - JSValuePtr src1 = callFrame[(++vPC)->u.operand].jsValue(callFrame); - JSValuePtr src2 = callFrame[(++vPC)->u.operand].jsValue(callFrame); - JSValuePtr result = jsBoolean(jsLess(callFrame, src1, src2)); + int dst = vPC[1].u.operand; + JSValue src1 = callFrame->r(vPC[2].u.operand).jsValue(); + JSValue src2 = callFrame->r(vPC[3].u.operand).jsValue(); + JSValue result = jsBoolean(jsLess(callFrame, src1, src2)); CHECK_FOR_EXCEPTION(); - callFrame[dst] = result; + callFrame->uncheckedR(dst) = result; - ++vPC; + vPC += OPCODE_LENGTH(op_less); NEXT_INSTRUCTION(); } DEFINE_OPCODE(op_lesseq) { @@ -1630,14 +2208,48 @@ JSValuePtr Interpreter::privateExecute(ExecutionFlag flag, RegisterFile* registe register src2, as with the ECMAScript '<=' operator, and puts the result as a boolean in register dst. */ - int dst = (++vPC)->u.operand; - JSValuePtr src1 = callFrame[(++vPC)->u.operand].jsValue(callFrame); - JSValuePtr src2 = callFrame[(++vPC)->u.operand].jsValue(callFrame); - JSValuePtr result = jsBoolean(jsLessEq(callFrame, src1, src2)); + int dst = vPC[1].u.operand; + JSValue src1 = callFrame->r(vPC[2].u.operand).jsValue(); + JSValue src2 = callFrame->r(vPC[3].u.operand).jsValue(); + JSValue result = jsBoolean(jsLessEq(callFrame, src1, src2)); + CHECK_FOR_EXCEPTION(); + callFrame->uncheckedR(dst) = result; + + vPC += OPCODE_LENGTH(op_lesseq); + NEXT_INSTRUCTION(); + } + DEFINE_OPCODE(op_greater) { + /* greater dst(r) src1(r) src2(r) + + Checks whether register src1 is greater than register src2, as + with the ECMAScript '>' operator, and puts the result as + a boolean in register dst. + */ + int dst = vPC[1].u.operand; + JSValue src1 = callFrame->r(vPC[2].u.operand).jsValue(); + JSValue src2 = callFrame->r(vPC[3].u.operand).jsValue(); + JSValue result = jsBoolean(jsLess(callFrame, src2, src1)); + CHECK_FOR_EXCEPTION(); + callFrame->uncheckedR(dst) = result; + + vPC += OPCODE_LENGTH(op_greater); + NEXT_INSTRUCTION(); + } + DEFINE_OPCODE(op_greatereq) { + /* greatereq dst(r) src1(r) src2(r) + + Checks whether register src1 is greater than or equal to + register src2, as with the ECMAScript '>=' operator, and + puts the result as a boolean in register dst. + */ + int dst = vPC[1].u.operand; + JSValue src1 = callFrame->r(vPC[2].u.operand).jsValue(); + JSValue src2 = callFrame->r(vPC[3].u.operand).jsValue(); + JSValue result = jsBoolean(jsLessEq(callFrame, src2, src1)); CHECK_FOR_EXCEPTION(); - callFrame[dst] = result; + callFrame->uncheckedR(dst) = result; - ++vPC; + vPC += OPCODE_LENGTH(op_greatereq); NEXT_INSTRUCTION(); } DEFINE_OPCODE(op_pre_inc) { @@ -1646,17 +2258,17 @@ JSValuePtr Interpreter::privateExecute(ExecutionFlag flag, RegisterFile* registe Converts register srcDst to number, adds one, and puts the result back in register srcDst. */ - int srcDst = (++vPC)->u.operand; - JSValuePtr v = callFrame[srcDst].jsValue(callFrame); - if (JSFastMath::canDoFastAdditiveOperations(v)) - callFrame[srcDst] = JSValuePtr(JSFastMath::incImmediateNumber(v)); + int srcDst = vPC[1].u.operand; + JSValue v = callFrame->r(srcDst).jsValue(); + if (v.isInt32() && v.asInt32() < INT_MAX) + callFrame->uncheckedR(srcDst) = jsNumber(v.asInt32() + 1); else { - JSValuePtr result = jsNumber(callFrame, v.toNumber(callFrame) + 1); + JSValue result = jsNumber(v.toNumber(callFrame) + 1); CHECK_FOR_EXCEPTION(); - callFrame[srcDst] = result; + callFrame->uncheckedR(srcDst) = result; } - ++vPC; + vPC += OPCODE_LENGTH(op_pre_inc); NEXT_INSTRUCTION(); } DEFINE_OPCODE(op_pre_dec) { @@ -1665,17 +2277,17 @@ JSValuePtr Interpreter::privateExecute(ExecutionFlag flag, RegisterFile* registe Converts register srcDst to number, subtracts one, and puts the result back in register srcDst. */ - int srcDst = (++vPC)->u.operand; - JSValuePtr v = callFrame[srcDst].jsValue(callFrame); - if (JSFastMath::canDoFastAdditiveOperations(v)) - callFrame[srcDst] = JSValuePtr(JSFastMath::decImmediateNumber(v)); + int srcDst = vPC[1].u.operand; + JSValue v = callFrame->r(srcDst).jsValue(); + if (v.isInt32() && v.asInt32() > INT_MIN) + callFrame->uncheckedR(srcDst) = jsNumber(v.asInt32() - 1); else { - JSValuePtr result = jsNumber(callFrame, v.toNumber(callFrame) - 1); + JSValue result = jsNumber(v.toNumber(callFrame) - 1); CHECK_FOR_EXCEPTION(); - callFrame[srcDst] = result; + callFrame->uncheckedR(srcDst) = result; } - ++vPC; + vPC += OPCODE_LENGTH(op_pre_dec); NEXT_INSTRUCTION(); } DEFINE_OPCODE(op_post_inc) { @@ -1685,20 +2297,20 @@ JSValuePtr Interpreter::privateExecute(ExecutionFlag flag, RegisterFile* registe written to register dst, and the number plus one is written back to register srcDst. */ - int dst = (++vPC)->u.operand; - int srcDst = (++vPC)->u.operand; - JSValuePtr v = callFrame[srcDst].jsValue(callFrame); - if (JSFastMath::canDoFastAdditiveOperations(v)) { - callFrame[dst] = v; - callFrame[srcDst] = JSValuePtr(JSFastMath::incImmediateNumber(v)); + int dst = vPC[1].u.operand; + int srcDst = vPC[2].u.operand; + JSValue v = callFrame->r(srcDst).jsValue(); + if (v.isInt32() && v.asInt32() < INT_MAX) { + callFrame->uncheckedR(srcDst) = jsNumber(v.asInt32() + 1); + callFrame->uncheckedR(dst) = v; } else { - JSValuePtr number = callFrame[srcDst].jsValue(callFrame).toJSNumber(callFrame); + double number = callFrame->r(srcDst).jsValue().toNumber(callFrame); CHECK_FOR_EXCEPTION(); - callFrame[dst] = number; - callFrame[srcDst] = JSValuePtr(jsNumber(callFrame, number.uncheckedGetNumber() + 1)); + callFrame->uncheckedR(srcDst) = jsNumber(number + 1); + callFrame->uncheckedR(dst) = jsNumber(number); } - ++vPC; + vPC += OPCODE_LENGTH(op_post_inc); NEXT_INSTRUCTION(); } DEFINE_OPCODE(op_post_dec) { @@ -1708,20 +2320,20 @@ JSValuePtr Interpreter::privateExecute(ExecutionFlag flag, RegisterFile* registe written to register dst, and the number minus one is written back to register srcDst. */ - int dst = (++vPC)->u.operand; - int srcDst = (++vPC)->u.operand; - JSValuePtr v = callFrame[srcDst].jsValue(callFrame); - if (JSFastMath::canDoFastAdditiveOperations(v)) { - callFrame[dst] = v; - callFrame[srcDst] = JSValuePtr(JSFastMath::decImmediateNumber(v)); + int dst = vPC[1].u.operand; + int srcDst = vPC[2].u.operand; + JSValue v = callFrame->r(srcDst).jsValue(); + if (v.isInt32() && v.asInt32() > INT_MIN) { + callFrame->uncheckedR(srcDst) = jsNumber(v.asInt32() - 1); + callFrame->uncheckedR(dst) = v; } else { - JSValuePtr number = callFrame[srcDst].jsValue(callFrame).toJSNumber(callFrame); + double number = callFrame->r(srcDst).jsValue().toNumber(callFrame); CHECK_FOR_EXCEPTION(); - callFrame[dst] = number; - callFrame[srcDst] = JSValuePtr(jsNumber(callFrame, number.uncheckedGetNumber() - 1)); + callFrame->uncheckedR(srcDst) = jsNumber(number - 1); + callFrame->uncheckedR(dst) = jsNumber(number); } - ++vPC; + vPC += OPCODE_LENGTH(op_post_dec); NEXT_INSTRUCTION(); } DEFINE_OPCODE(op_to_jsnumber) { @@ -1730,20 +2342,20 @@ JSValuePtr Interpreter::privateExecute(ExecutionFlag flag, RegisterFile* registe Converts register src to number, and puts the result in register dst. */ - int dst = (++vPC)->u.operand; - int src = (++vPC)->u.operand; + int dst = vPC[1].u.operand; + int src = vPC[2].u.operand; - JSValuePtr srcVal = callFrame[src].jsValue(callFrame); + JSValue srcVal = callFrame->r(src).jsValue(); if (LIKELY(srcVal.isNumber())) - callFrame[dst] = callFrame[src]; + callFrame->uncheckedR(dst) = callFrame->r(src); else { - JSValuePtr result = srcVal.toJSNumber(callFrame); + double number = srcVal.toNumber(callFrame); CHECK_FOR_EXCEPTION(); - callFrame[dst] = result; + callFrame->uncheckedR(dst) = jsNumber(number); } - ++vPC; + vPC += OPCODE_LENGTH(op_to_jsnumber); NEXT_INSTRUCTION(); } DEFINE_OPCODE(op_negate) { @@ -1752,18 +2364,17 @@ JSValuePtr Interpreter::privateExecute(ExecutionFlag flag, RegisterFile* registe Converts register src to number, negates it, and puts the result in register dst. */ - int dst = (++vPC)->u.operand; - JSValuePtr src = callFrame[(++vPC)->u.operand].jsValue(callFrame); - ++vPC; - double v; - if (src.getNumber(v)) - callFrame[dst] = JSValuePtr(jsNumber(callFrame, -v)); + int dst = vPC[1].u.operand; + JSValue src = callFrame->r(vPC[2].u.operand).jsValue(); + if (src.isInt32() && (src.asInt32() & 0x7fffffff)) // non-zero and no overflow + callFrame->uncheckedR(dst) = jsNumber(-src.asInt32()); else { - JSValuePtr result = jsNumber(callFrame, -src.toNumber(callFrame)); + JSValue result = jsNumber(-src.toNumber(callFrame)); CHECK_FOR_EXCEPTION(); - callFrame[dst] = result; + callFrame->uncheckedR(dst) = result; } + vPC += OPCODE_LENGTH(op_negate); NEXT_INSTRUCTION(); } DEFINE_OPCODE(op_add) { @@ -1773,17 +2384,17 @@ JSValuePtr Interpreter::privateExecute(ExecutionFlag flag, RegisterFile* registe in register dst. (JS add may be string concatenation or numeric add, depending on the types of the operands.) */ - int dst = (++vPC)->u.operand; - JSValuePtr src1 = callFrame[(++vPC)->u.operand].jsValue(callFrame); - JSValuePtr src2 = callFrame[(++vPC)->u.operand].jsValue(callFrame); - if (JSFastMath::canDoFastAdditiveOperations(src1, src2)) - callFrame[dst] = JSValuePtr(JSFastMath::addImmediateNumbers(src1, src2)); + int dst = vPC[1].u.operand; + JSValue src1 = callFrame->r(vPC[2].u.operand).jsValue(); + JSValue src2 = callFrame->r(vPC[3].u.operand).jsValue(); + if (src1.isInt32() && src2.isInt32() && !((src1.asInt32() | src2.asInt32()) & 0xc0000000)) // no overflow + callFrame->uncheckedR(dst) = jsNumber(src1.asInt32() + src2.asInt32()); else { - JSValuePtr result = jsAdd(callFrame, src1, src2); + JSValue result = jsAdd(callFrame, src1, src2); CHECK_FOR_EXCEPTION(); - callFrame[dst] = result; + callFrame->uncheckedR(dst) = result; } - vPC += 2; + vPC += OPCODE_LENGTH(op_add); NEXT_INSTRUCTION(); } DEFINE_OPCODE(op_mul) { @@ -1792,27 +2403,18 @@ JSValuePtr Interpreter::privateExecute(ExecutionFlag flag, RegisterFile* registe Multiplies register src1 and register src2 (converted to numbers), and puts the product in register dst. */ - int dst = (++vPC)->u.operand; - JSValuePtr src1 = callFrame[(++vPC)->u.operand].jsValue(callFrame); - JSValuePtr src2 = callFrame[(++vPC)->u.operand].jsValue(callFrame); - double left; - double right; - if (JSValuePtr::areBothInt32Fast(src1, src2)) { - int32_t left = src1.getInt32Fast(); - int32_t right = src2.getInt32Fast(); - if ((left | right) >> 15 == 0) - callFrame[dst] = JSValuePtr(jsNumber(callFrame, left * right)); - else - callFrame[dst] = JSValuePtr(jsNumber(callFrame, static_cast(left) * static_cast(right))); - } else if (src1.getNumber(left) && src2.getNumber(right)) - callFrame[dst] = JSValuePtr(jsNumber(callFrame, left * right)); + int dst = vPC[1].u.operand; + JSValue src1 = callFrame->r(vPC[2].u.operand).jsValue(); + JSValue src2 = callFrame->r(vPC[3].u.operand).jsValue(); + if (src1.isInt32() && src2.isInt32() && !(src1.asInt32() | src2.asInt32()) >> 15) // no overflow + callFrame->uncheckedR(dst) = jsNumber(src1.asInt32() * src2.asInt32()); else { - JSValuePtr result = jsNumber(callFrame, src1.toNumber(callFrame) * src2.toNumber(callFrame)); + JSValue result = jsNumber(src1.toNumber(callFrame) * src2.toNumber(callFrame)); CHECK_FOR_EXCEPTION(); - callFrame[dst] = result; + callFrame->uncheckedR(dst) = result; } - vPC += 2; + vPC += OPCODE_LENGTH(op_mul); NEXT_INSTRUCTION(); } DEFINE_OPCODE(op_div) { @@ -1822,19 +2424,15 @@ JSValuePtr Interpreter::privateExecute(ExecutionFlag flag, RegisterFile* registe register divisor (converted to number), and puts the quotient in register dst. */ - int dst = (++vPC)->u.operand; - JSValuePtr dividend = callFrame[(++vPC)->u.operand].jsValue(callFrame); - JSValuePtr divisor = callFrame[(++vPC)->u.operand].jsValue(callFrame); - double left; - double right; - if (dividend.getNumber(left) && divisor.getNumber(right)) - callFrame[dst] = JSValuePtr(jsNumber(callFrame, left / right)); - else { - JSValuePtr result = jsNumber(callFrame, dividend.toNumber(callFrame) / divisor.toNumber(callFrame)); - CHECK_FOR_EXCEPTION(); - callFrame[dst] = result; - } - ++vPC; + int dst = vPC[1].u.operand; + JSValue dividend = callFrame->r(vPC[2].u.operand).jsValue(); + JSValue divisor = callFrame->r(vPC[3].u.operand).jsValue(); + + JSValue result = jsNumber(dividend.toNumber(callFrame) / divisor.toNumber(callFrame)); + CHECK_FOR_EXCEPTION(); + callFrame->uncheckedR(dst) = result; + + vPC += OPCODE_LENGTH(op_div); NEXT_INSTRUCTION(); } DEFINE_OPCODE(op_mod) { @@ -1844,28 +2442,26 @@ JSValuePtr Interpreter::privateExecute(ExecutionFlag flag, RegisterFile* registe register divisor (converted to number), and puts the remainder in register dst. */ - int dst = (++vPC)->u.operand; - int dividend = (++vPC)->u.operand; - int divisor = (++vPC)->u.operand; - - JSValuePtr dividendValue = callFrame[dividend].jsValue(callFrame); - JSValuePtr divisorValue = callFrame[divisor].jsValue(callFrame); + int dst = vPC[1].u.operand; + JSValue dividend = callFrame->r(vPC[2].u.operand).jsValue(); + JSValue divisor = callFrame->r(vPC[3].u.operand).jsValue(); - if (JSValuePtr::areBothInt32Fast(dividendValue, divisorValue) && divisorValue != js0()) { - // We expect the result of the modulus of a number that was representable as an int32 to also be representable - // as an int32. - JSValuePtr result = JSValuePtr::makeInt32Fast(dividendValue.getInt32Fast() % divisorValue.getInt32Fast()); + if (dividend.isInt32() && divisor.isInt32() && divisor.asInt32() != 0) { + JSValue result = jsNumber(dividend.asInt32() % divisor.asInt32()); ASSERT(result); - callFrame[dst] = result; - ++vPC; + callFrame->uncheckedR(dst) = result; + vPC += OPCODE_LENGTH(op_mod); NEXT_INSTRUCTION(); } - double d = dividendValue.toNumber(callFrame); - JSValuePtr result = jsNumber(callFrame, fmod(d, divisorValue.toNumber(callFrame))); + // Conversion to double must happen outside the call to fmod since the + // order of argument evaluation is not guaranteed. + double d1 = dividend.toNumber(callFrame); + double d2 = divisor.toNumber(callFrame); + JSValue result = jsNumber(fmod(d1, d2)); CHECK_FOR_EXCEPTION(); - callFrame[dst] = result; - ++vPC; + callFrame->uncheckedR(dst) = result; + vPC += OPCODE_LENGTH(op_mod); NEXT_INSTRUCTION(); } DEFINE_OPCODE(op_sub) { @@ -1875,21 +2471,17 @@ JSValuePtr Interpreter::privateExecute(ExecutionFlag flag, RegisterFile* registe src1 (converted to number), and puts the difference in register dst. */ - int dst = (++vPC)->u.operand; - JSValuePtr src1 = callFrame[(++vPC)->u.operand].jsValue(callFrame); - JSValuePtr src2 = callFrame[(++vPC)->u.operand].jsValue(callFrame); - double left; - double right; - if (JSFastMath::canDoFastAdditiveOperations(src1, src2)) - callFrame[dst] = JSValuePtr(JSFastMath::subImmediateNumbers(src1, src2)); - else if (src1.getNumber(left) && src2.getNumber(right)) - callFrame[dst] = JSValuePtr(jsNumber(callFrame, left - right)); + int dst = vPC[1].u.operand; + JSValue src1 = callFrame->r(vPC[2].u.operand).jsValue(); + JSValue src2 = callFrame->r(vPC[3].u.operand).jsValue(); + if (src1.isInt32() && src2.isInt32() && !((src1.asInt32() | src2.asInt32()) & 0xc0000000)) // no overflow + callFrame->uncheckedR(dst) = jsNumber(src1.asInt32() - src2.asInt32()); else { - JSValuePtr result = jsNumber(callFrame, src1.toNumber(callFrame) - src2.toNumber(callFrame)); + JSValue result = jsNumber(src1.toNumber(callFrame) - src2.toNumber(callFrame)); CHECK_FOR_EXCEPTION(); - callFrame[dst] = result; + callFrame->uncheckedR(dst) = result; } - vPC += 2; + vPC += OPCODE_LENGTH(op_sub); NEXT_INSTRUCTION(); } DEFINE_OPCODE(op_lshift) { @@ -1899,22 +2491,19 @@ JSValuePtr Interpreter::privateExecute(ExecutionFlag flag, RegisterFile* registe register shift (converted to uint32), and puts the result in register dst. */ - int dst = (++vPC)->u.operand; - JSValuePtr val = callFrame[(++vPC)->u.operand].jsValue(callFrame); - JSValuePtr shift = callFrame[(++vPC)->u.operand].jsValue(callFrame); - int32_t left; - uint32_t right; - if (JSValuePtr::areBothInt32Fast(val, shift)) - callFrame[dst] = JSValuePtr(jsNumber(callFrame, val.getInt32Fast() << (shift.getInt32Fast() & 0x1f))); - else if (val.numberToInt32(left) && shift.numberToUInt32(right)) - callFrame[dst] = JSValuePtr(jsNumber(callFrame, left << (right & 0x1f))); + int dst = vPC[1].u.operand; + JSValue val = callFrame->r(vPC[2].u.operand).jsValue(); + JSValue shift = callFrame->r(vPC[3].u.operand).jsValue(); + + if (val.isInt32() && shift.isInt32()) + callFrame->uncheckedR(dst) = jsNumber(val.asInt32() << (shift.asInt32() & 0x1f)); else { - JSValuePtr result = jsNumber(callFrame, (val.toInt32(callFrame)) << (shift.toUInt32(callFrame) & 0x1f)); + JSValue result = jsNumber((val.toInt32(callFrame)) << (shift.toUInt32(callFrame) & 0x1f)); CHECK_FOR_EXCEPTION(); - callFrame[dst] = result; + callFrame->uncheckedR(dst) = result; } - ++vPC; + vPC += OPCODE_LENGTH(op_lshift); NEXT_INSTRUCTION(); } DEFINE_OPCODE(op_rshift) { @@ -1924,22 +2513,19 @@ JSValuePtr Interpreter::privateExecute(ExecutionFlag flag, RegisterFile* registe to int32) by register shift (converted to uint32), and puts the result in register dst. */ - int dst = (++vPC)->u.operand; - JSValuePtr val = callFrame[(++vPC)->u.operand].jsValue(callFrame); - JSValuePtr shift = callFrame[(++vPC)->u.operand].jsValue(callFrame); - int32_t left; - uint32_t right; - if (JSFastMath::canDoFastRshift(val, shift)) - callFrame[dst] = JSValuePtr(JSFastMath::rightShiftImmediateNumbers(val, shift)); - else if (val.numberToInt32(left) && shift.numberToUInt32(right)) - callFrame[dst] = JSValuePtr(jsNumber(callFrame, left >> (right & 0x1f))); + int dst = vPC[1].u.operand; + JSValue val = callFrame->r(vPC[2].u.operand).jsValue(); + JSValue shift = callFrame->r(vPC[3].u.operand).jsValue(); + + if (val.isInt32() && shift.isInt32()) + callFrame->uncheckedR(dst) = jsNumber(val.asInt32() >> (shift.asInt32() & 0x1f)); else { - JSValuePtr result = jsNumber(callFrame, (val.toInt32(callFrame)) >> (shift.toUInt32(callFrame) & 0x1f)); + JSValue result = jsNumber((val.toInt32(callFrame)) >> (shift.toUInt32(callFrame) & 0x1f)); CHECK_FOR_EXCEPTION(); - callFrame[dst] = result; + callFrame->uncheckedR(dst) = result; } - ++vPC; + vPC += OPCODE_LENGTH(op_rshift); NEXT_INSTRUCTION(); } DEFINE_OPCODE(op_urshift) { @@ -1949,18 +2535,18 @@ JSValuePtr Interpreter::privateExecute(ExecutionFlag flag, RegisterFile* registe to uint32) by register shift (converted to uint32), and puts the result in register dst. */ - int dst = (++vPC)->u.operand; - JSValuePtr val = callFrame[(++vPC)->u.operand].jsValue(callFrame); - JSValuePtr shift = callFrame[(++vPC)->u.operand].jsValue(callFrame); - if (JSFastMath::canDoFastUrshift(val, shift)) - callFrame[dst] = JSValuePtr(JSFastMath::rightShiftImmediateNumbers(val, shift)); + int dst = vPC[1].u.operand; + JSValue val = callFrame->r(vPC[2].u.operand).jsValue(); + JSValue shift = callFrame->r(vPC[3].u.operand).jsValue(); + if (val.isUInt32() && shift.isInt32()) + callFrame->uncheckedR(dst) = jsNumber(val.asInt32() >> (shift.asInt32() & 0x1f)); else { - JSValuePtr result = jsNumber(callFrame, (val.toUInt32(callFrame)) >> (shift.toUInt32(callFrame) & 0x1f)); + JSValue result = jsNumber((val.toUInt32(callFrame)) >> (shift.toUInt32(callFrame) & 0x1f)); CHECK_FOR_EXCEPTION(); - callFrame[dst] = result; + callFrame->uncheckedR(dst) = result; } - ++vPC; + vPC += OPCODE_LENGTH(op_urshift); NEXT_INSTRUCTION(); } DEFINE_OPCODE(op_bitand) { @@ -1970,22 +2556,18 @@ JSValuePtr Interpreter::privateExecute(ExecutionFlag flag, RegisterFile* registe and register src2 (converted to int32), and puts the result in register dst. */ - int dst = (++vPC)->u.operand; - JSValuePtr src1 = callFrame[(++vPC)->u.operand].jsValue(callFrame); - JSValuePtr src2 = callFrame[(++vPC)->u.operand].jsValue(callFrame); - int32_t left; - int32_t right; - if (JSFastMath::canDoFastBitwiseOperations(src1, src2)) - callFrame[dst] = JSValuePtr(JSFastMath::andImmediateNumbers(src1, src2)); - else if (src1.numberToInt32(left) && src2.numberToInt32(right)) - callFrame[dst] = JSValuePtr(jsNumber(callFrame, left & right)); + int dst = vPC[1].u.operand; + JSValue src1 = callFrame->r(vPC[2].u.operand).jsValue(); + JSValue src2 = callFrame->r(vPC[3].u.operand).jsValue(); + if (src1.isInt32() && src2.isInt32()) + callFrame->uncheckedR(dst) = jsNumber(src1.asInt32() & src2.asInt32()); else { - JSValuePtr result = jsNumber(callFrame, src1.toInt32(callFrame) & src2.toInt32(callFrame)); + JSValue result = jsNumber(src1.toInt32(callFrame) & src2.toInt32(callFrame)); CHECK_FOR_EXCEPTION(); - callFrame[dst] = result; + callFrame->uncheckedR(dst) = result; } - vPC += 2; + vPC += OPCODE_LENGTH(op_bitand); NEXT_INSTRUCTION(); } DEFINE_OPCODE(op_bitxor) { @@ -1995,22 +2577,18 @@ JSValuePtr Interpreter::privateExecute(ExecutionFlag flag, RegisterFile* registe and register src2 (converted to int32), and puts the result in register dst. */ - int dst = (++vPC)->u.operand; - JSValuePtr src1 = callFrame[(++vPC)->u.operand].jsValue(callFrame); - JSValuePtr src2 = callFrame[(++vPC)->u.operand].jsValue(callFrame); - int32_t left; - int32_t right; - if (JSFastMath::canDoFastBitwiseOperations(src1, src2)) - callFrame[dst] = JSValuePtr(JSFastMath::xorImmediateNumbers(src1, src2)); - else if (src1.numberToInt32(left) && src2.numberToInt32(right)) - callFrame[dst] = JSValuePtr(jsNumber(callFrame, left ^ right)); + int dst = vPC[1].u.operand; + JSValue src1 = callFrame->r(vPC[2].u.operand).jsValue(); + JSValue src2 = callFrame->r(vPC[3].u.operand).jsValue(); + if (src1.isInt32() && src2.isInt32()) + callFrame->uncheckedR(dst) = jsNumber(src1.asInt32() ^ src2.asInt32()); else { - JSValuePtr result = jsNumber(callFrame, src1.toInt32(callFrame) ^ src2.toInt32(callFrame)); + JSValue result = jsNumber(src1.toInt32(callFrame) ^ src2.toInt32(callFrame)); CHECK_FOR_EXCEPTION(); - callFrame[dst] = result; + callFrame->uncheckedR(dst) = result; } - vPC += 2; + vPC += OPCODE_LENGTH(op_bitxor); NEXT_INSTRUCTION(); } DEFINE_OPCODE(op_bitor) { @@ -2020,41 +2598,18 @@ JSValuePtr Interpreter::privateExecute(ExecutionFlag flag, RegisterFile* registe and register src2 (converted to int32), and puts the result in register dst. */ - int dst = (++vPC)->u.operand; - JSValuePtr src1 = callFrame[(++vPC)->u.operand].jsValue(callFrame); - JSValuePtr src2 = callFrame[(++vPC)->u.operand].jsValue(callFrame); - int32_t left; - int32_t right; - if (JSFastMath::canDoFastBitwiseOperations(src1, src2)) - callFrame[dst] = JSValuePtr(JSFastMath::orImmediateNumbers(src1, src2)); - else if (src1.numberToInt32(left) && src2.numberToInt32(right)) - callFrame[dst] = JSValuePtr(jsNumber(callFrame, left | right)); + int dst = vPC[1].u.operand; + JSValue src1 = callFrame->r(vPC[2].u.operand).jsValue(); + JSValue src2 = callFrame->r(vPC[3].u.operand).jsValue(); + if (src1.isInt32() && src2.isInt32()) + callFrame->uncheckedR(dst) = jsNumber(src1.asInt32() | src2.asInt32()); else { - JSValuePtr result = jsNumber(callFrame, src1.toInt32(callFrame) | src2.toInt32(callFrame)); + JSValue result = jsNumber(src1.toInt32(callFrame) | src2.toInt32(callFrame)); CHECK_FOR_EXCEPTION(); - callFrame[dst] = result; + callFrame->uncheckedR(dst) = result; } - vPC += 2; - NEXT_INSTRUCTION(); - } - DEFINE_OPCODE(op_bitnot) { - /* bitnot dst(r) src(r) - - Computes bitwise NOT of register src1 (converted to int32), - and puts the result in register dst. - */ - int dst = (++vPC)->u.operand; - JSValuePtr src = callFrame[(++vPC)->u.operand].jsValue(callFrame); - int32_t value; - if (src.numberToInt32(value)) - callFrame[dst] = JSValuePtr(jsNumber(callFrame, ~value)); - else { - JSValuePtr result = jsNumber(callFrame, ~src.toInt32(callFrame)); - CHECK_FOR_EXCEPTION(); - callFrame[dst] = result; - } - ++vPC; + vPC += OPCODE_LENGTH(op_bitor); NEXT_INSTRUCTION(); } DEFINE_OPCODE(op_not) { @@ -2063,13 +2618,30 @@ JSValuePtr Interpreter::privateExecute(ExecutionFlag flag, RegisterFile* registe Computes logical NOT of register src (converted to boolean), and puts the result in register dst. */ - int dst = (++vPC)->u.operand; - int src = (++vPC)->u.operand; - JSValuePtr result = jsBoolean(!callFrame[src].jsValue(callFrame).toBoolean(callFrame)); + int dst = vPC[1].u.operand; + int src = vPC[2].u.operand; + JSValue result = jsBoolean(!callFrame->r(src).jsValue().toBoolean(callFrame)); CHECK_FOR_EXCEPTION(); - callFrame[dst] = result; + callFrame->uncheckedR(dst) = result; + + vPC += OPCODE_LENGTH(op_not); + NEXT_INSTRUCTION(); + } + DEFINE_OPCODE(op_check_has_instance) { + /* check_has_instance constructor(r) + + Check 'constructor' is an object with the internal property + [HasInstance] (i.e. is a function ... *shakes head sadly at + JSC API*). Raises an exception if register constructor is not + an valid parameter for instanceof. + */ + int base = vPC[1].u.operand; + JSValue baseVal = callFrame->r(base).jsValue(); + + if (isInvalidParamForInstanceOf(callFrame, baseVal, exceptionValue)) + goto vm_throw; - ++vPC; + vPC += OPCODE_LENGTH(op_check_has_instance); NEXT_INSTRUCTION(); } DEFINE_OPCODE(op_instanceof) { @@ -2090,15 +2662,15 @@ JSValuePtr Interpreter::privateExecute(ExecutionFlag flag, RegisterFile* registe int base = vPC[3].u.operand; int baseProto = vPC[4].u.operand; - JSValuePtr baseVal = callFrame[base].jsValue(callFrame); + JSValue baseVal = callFrame->r(base).jsValue(); - if (isNotObject(callFrame, true, callFrame->codeBlock(), vPC, baseVal, exceptionValue)) - goto vm_throw; + ASSERT(!isInvalidParamForInstanceOf(callFrame, baseVal, exceptionValue)); - JSObject* baseObj = asObject(baseVal); - callFrame[dst] = jsBoolean(baseObj->structure()->typeInfo().implementsHasInstance() ? baseObj->hasInstance(callFrame, callFrame[value].jsValue(callFrame), callFrame[baseProto].jsValue(callFrame)) : false); + bool result = asObject(baseVal)->methodTable()->hasInstance(asObject(baseVal), callFrame, callFrame->r(value).jsValue(), callFrame->r(baseProto).jsValue()); + CHECK_FOR_EXCEPTION(); + callFrame->uncheckedR(dst) = jsBoolean(result); - vPC += 5; + vPC += OPCODE_LENGTH(op_instanceof); NEXT_INSTRUCTION(); } DEFINE_OPCODE(op_typeof) { @@ -2107,11 +2679,11 @@ JSValuePtr Interpreter::privateExecute(ExecutionFlag flag, RegisterFile* registe Determines the type string for src according to ECMAScript rules, and puts the result in register dst. */ - int dst = (++vPC)->u.operand; - int src = (++vPC)->u.operand; - callFrame[dst] = JSValuePtr(jsTypeStringForValue(callFrame, callFrame[src].jsValue(callFrame))); + int dst = vPC[1].u.operand; + int src = vPC[2].u.operand; + callFrame->uncheckedR(dst) = JSValue(jsTypeStringForValue(callFrame, callFrame->r(src).jsValue())); - ++vPC; + vPC += OPCODE_LENGTH(op_typeof); NEXT_INSTRUCTION(); } DEFINE_OPCODE(op_is_undefined) { @@ -2121,12 +2693,12 @@ JSValuePtr Interpreter::privateExecute(ExecutionFlag flag, RegisterFile* registe the ECMAScript rules is "undefined", and puts the result in register dst. */ - int dst = (++vPC)->u.operand; - int src = (++vPC)->u.operand; - JSValuePtr v = callFrame[src].jsValue(callFrame); - callFrame[dst] = jsBoolean(v.isCell() ? v.asCell()->structure()->typeInfo().masqueradesAsUndefined() : v.isUndefined()); + int dst = vPC[1].u.operand; + int src = vPC[2].u.operand; + JSValue v = callFrame->r(src).jsValue(); + callFrame->uncheckedR(dst) = jsBoolean(v.isCell() ? v.asCell()->structure()->typeInfo().masqueradesAsUndefined() : v.isUndefined()); - ++vPC; + vPC += OPCODE_LENGTH(op_is_undefined); NEXT_INSTRUCTION(); } DEFINE_OPCODE(op_is_boolean) { @@ -2136,11 +2708,11 @@ JSValuePtr Interpreter::privateExecute(ExecutionFlag flag, RegisterFile* registe the ECMAScript rules is "boolean", and puts the result in register dst. */ - int dst = (++vPC)->u.operand; - int src = (++vPC)->u.operand; - callFrame[dst] = jsBoolean(callFrame[src].jsValue(callFrame).isBoolean()); + int dst = vPC[1].u.operand; + int src = vPC[2].u.operand; + callFrame->uncheckedR(dst) = jsBoolean(callFrame->r(src).jsValue().isBoolean()); - ++vPC; + vPC += OPCODE_LENGTH(op_is_boolean); NEXT_INSTRUCTION(); } DEFINE_OPCODE(op_is_number) { @@ -2150,11 +2722,11 @@ JSValuePtr Interpreter::privateExecute(ExecutionFlag flag, RegisterFile* registe the ECMAScript rules is "number", and puts the result in register dst. */ - int dst = (++vPC)->u.operand; - int src = (++vPC)->u.operand; - callFrame[dst] = jsBoolean(callFrame[src].jsValue(callFrame).isNumber()); + int dst = vPC[1].u.operand; + int src = vPC[2].u.operand; + callFrame->uncheckedR(dst) = jsBoolean(callFrame->r(src).jsValue().isNumber()); - ++vPC; + vPC += OPCODE_LENGTH(op_is_number); NEXT_INSTRUCTION(); } DEFINE_OPCODE(op_is_string) { @@ -2164,11 +2736,11 @@ JSValuePtr Interpreter::privateExecute(ExecutionFlag flag, RegisterFile* registe the ECMAScript rules is "string", and puts the result in register dst. */ - int dst = (++vPC)->u.operand; - int src = (++vPC)->u.operand; - callFrame[dst] = jsBoolean(callFrame[src].jsValue(callFrame).isString()); + int dst = vPC[1].u.operand; + int src = vPC[2].u.operand; + callFrame->uncheckedR(dst) = jsBoolean(callFrame->r(src).jsValue().isString()); - ++vPC; + vPC += OPCODE_LENGTH(op_is_string); NEXT_INSTRUCTION(); } DEFINE_OPCODE(op_is_object) { @@ -2178,11 +2750,11 @@ JSValuePtr Interpreter::privateExecute(ExecutionFlag flag, RegisterFile* registe the ECMAScript rules is "object", and puts the result in register dst. */ - int dst = (++vPC)->u.operand; - int src = (++vPC)->u.operand; - callFrame[dst] = jsBoolean(jsIsObjectType(callFrame[src].jsValue(callFrame))); + int dst = vPC[1].u.operand; + int src = vPC[2].u.operand; + callFrame->uncheckedR(dst) = jsBoolean(jsIsObjectType(callFrame->r(src).jsValue())); - ++vPC; + vPC += OPCODE_LENGTH(op_is_object); NEXT_INSTRUCTION(); } DEFINE_OPCODE(op_is_function) { @@ -2192,11 +2764,11 @@ JSValuePtr Interpreter::privateExecute(ExecutionFlag flag, RegisterFile* registe the ECMAScript rules is "function", and puts the result in register dst. */ - int dst = (++vPC)->u.operand; - int src = (++vPC)->u.operand; - callFrame[dst] = jsBoolean(jsIsFunctionType(callFrame[src].jsValue(callFrame))); + int dst = vPC[1].u.operand; + int src = vPC[2].u.operand; + callFrame->uncheckedR(dst) = jsBoolean(jsIsFunctionType(callFrame->r(src).jsValue())); - ++vPC; + vPC += OPCODE_LENGTH(op_is_function); NEXT_INSTRUCTION(); } DEFINE_OPCODE(op_in) { @@ -2208,28 +2780,28 @@ JSValuePtr Interpreter::privateExecute(ExecutionFlag flag, RegisterFile* registe Raises an exception if register constructor is not an object. */ - int dst = (++vPC)->u.operand; - int property = (++vPC)->u.operand; - int base = (++vPC)->u.operand; + int dst = vPC[1].u.operand; + int property = vPC[2].u.operand; + int base = vPC[3].u.operand; - JSValuePtr baseVal = callFrame[base].jsValue(callFrame); - if (isNotObject(callFrame, false, callFrame->codeBlock(), vPC, baseVal, exceptionValue)) + JSValue baseVal = callFrame->r(base).jsValue(); + if (isInvalidParamForIn(callFrame, baseVal, exceptionValue)) goto vm_throw; JSObject* baseObj = asObject(baseVal); - JSValuePtr propName = callFrame[property].jsValue(callFrame); + JSValue propName = callFrame->r(property).jsValue(); uint32_t i; if (propName.getUInt32(i)) - callFrame[dst] = jsBoolean(baseObj->hasProperty(callFrame, i)); + callFrame->uncheckedR(dst) = jsBoolean(baseObj->hasProperty(callFrame, i)); else { - Identifier property(callFrame, propName.toString(callFrame)); + Identifier property(callFrame, propName.toString(callFrame)->value(callFrame)); CHECK_FOR_EXCEPTION(); - callFrame[dst] = jsBoolean(baseObj->hasProperty(callFrame, property)); + callFrame->uncheckedR(dst) = jsBoolean(baseObj->hasProperty(callFrame, property)); } - ++vPC; + vPC += OPCODE_LENGTH(op_in); NEXT_INSTRUCTION(); } DEFINE_OPCODE(op_resolve) { @@ -2242,7 +2814,7 @@ JSValuePtr Interpreter::privateExecute(ExecutionFlag flag, RegisterFile* registe if (UNLIKELY(!resolve(callFrame, vPC, exceptionValue))) goto vm_throw; - vPC += 3; + vPC += OPCODE_LENGTH(op_resolve); NEXT_INSTRUCTION(); } DEFINE_OPCODE(op_resolve_skip) { @@ -2255,7 +2827,7 @@ JSValuePtr Interpreter::privateExecute(ExecutionFlag flag, RegisterFile* registe if (UNLIKELY(!resolveSkip(callFrame, vPC, exceptionValue))) goto vm_throw; - vPC += 4; + vPC += OPCODE_LENGTH(op_resolve_skip); NEXT_INSTRUCTION(); } @@ -2270,7 +2842,25 @@ JSValuePtr Interpreter::privateExecute(ExecutionFlag flag, RegisterFile* registe if (UNLIKELY(!resolveGlobal(callFrame, vPC, exceptionValue))) goto vm_throw; - vPC += 6; + vPC += OPCODE_LENGTH(op_resolve_global); + + NEXT_INSTRUCTION(); + } + DEFINE_OPCODE(op_resolve_global_dynamic) { + /* resolve_skip dst(r) globalObject(c) property(id) structure(sID) offset(n), depth(n) + + Performs a dynamic property lookup for the given property, on the provided + global object. If structure matches the Structure of the global then perform + a fast lookup using the case offset, otherwise fall back to a full resolve and + cache the new structure and offset. + + This walks through n levels of the scope chain to verify that none of those levels + in the scope chain include dynamically added properties. + */ + if (UNLIKELY(!resolveGlobalDynamic(callFrame, vPC, exceptionValue))) + goto vm_throw; + + vPC += OPCODE_LENGTH(op_resolve_global_dynamic); NEXT_INSTRUCTION(); } @@ -2279,13 +2869,13 @@ JSValuePtr Interpreter::privateExecute(ExecutionFlag flag, RegisterFile* registe Gets the global var at global slot index and places it in register dst. */ - int dst = (++vPC)->u.operand; - JSGlobalObject* scope = static_cast((++vPC)->u.jsCell); + int dst = vPC[1].u.operand; + JSGlobalObject* scope = codeBlock->globalObject(); ASSERT(scope->isGlobalObject()); - int index = (++vPC)->u.operand; + int index = vPC[2].u.operand; - callFrame[dst] = scope->registerAt(index); - ++vPC; + callFrame->uncheckedR(dst) = scope->registerAt(index).get(); + vPC += OPCODE_LENGTH(op_get_global_var); NEXT_INSTRUCTION(); } DEFINE_OPCODE(op_put_global_var) { @@ -2293,74 +2883,111 @@ JSValuePtr Interpreter::privateExecute(ExecutionFlag flag, RegisterFile* registe Puts value into global slot index. */ - JSGlobalObject* scope = static_cast((++vPC)->u.jsCell); + JSGlobalObject* scope = codeBlock->globalObject(); ASSERT(scope->isGlobalObject()); - int index = (++vPC)->u.operand; - int value = (++vPC)->u.operand; + int index = vPC[1].u.operand; + int value = vPC[2].u.operand; - scope->registerAt(index) = JSValuePtr(callFrame[value].jsValue(callFrame)); - ++vPC; + scope->registerAt(index).set(*globalData, scope, callFrame->r(value).jsValue()); + vPC += OPCODE_LENGTH(op_put_global_var); NEXT_INSTRUCTION(); - } + } DEFINE_OPCODE(op_get_scoped_var) { /* get_scoped_var dst(r) index(n) skip(n) Loads the contents of the index-th local from the scope skip nodes from - the top of the scope chain, and places it in register dst + the top of the scope chain, and places it in register dst. */ - int dst = (++vPC)->u.operand; - int index = (++vPC)->u.operand; - int skip = (++vPC)->u.operand + callFrame->codeBlock()->needsFullScopeChain(); + int dst = vPC[1].u.operand; + int index = vPC[2].u.operand; + int skip = vPC[3].u.operand; ScopeChainNode* scopeChain = callFrame->scopeChain(); ScopeChainIterator iter = scopeChain->begin(); ScopeChainIterator end = scopeChain->end(); - ASSERT(iter != end); + ASSERT_UNUSED(end, iter != end); + ASSERT(codeBlock == callFrame->codeBlock()); + bool checkTopLevel = codeBlock->codeType() == FunctionCode && codeBlock->needsFullScopeChain(); + ASSERT(skip || !checkTopLevel); + if (checkTopLevel && skip--) { + if (callFrame->r(codeBlock->activationRegister()).jsValue()) + ++iter; + } while (skip--) { ++iter; - ASSERT(iter != end); + ASSERT_UNUSED(end, iter != end); } - ASSERT((*iter)->isVariableObject()); - JSVariableObject* scope = static_cast(*iter); - callFrame[dst] = scope->registerAt(index); - ++vPC; + JSVariableObject* scope = jsCast(iter->get()); + callFrame->uncheckedR(dst) = scope->registerAt(index).get(); + ASSERT(callFrame->r(dst).jsValue()); + vPC += OPCODE_LENGTH(op_get_scoped_var); NEXT_INSTRUCTION(); } DEFINE_OPCODE(op_put_scoped_var) { /* put_scoped_var index(n) skip(n) value(r) */ - int index = (++vPC)->u.operand; - int skip = (++vPC)->u.operand + callFrame->codeBlock()->needsFullScopeChain(); - int value = (++vPC)->u.operand; + int index = vPC[1].u.operand; + int skip = vPC[2].u.operand; + int value = vPC[3].u.operand; ScopeChainNode* scopeChain = callFrame->scopeChain(); ScopeChainIterator iter = scopeChain->begin(); ScopeChainIterator end = scopeChain->end(); - ASSERT(iter != end); + ASSERT(codeBlock == callFrame->codeBlock()); + ASSERT_UNUSED(end, iter != end); + bool checkTopLevel = codeBlock->codeType() == FunctionCode && codeBlock->needsFullScopeChain(); + ASSERT(skip || !checkTopLevel); + if (checkTopLevel && skip--) { + if (callFrame->r(codeBlock->activationRegister()).jsValue()) + ++iter; + } while (skip--) { ++iter; - ASSERT(iter != end); + ASSERT_UNUSED(end, iter != end); } ASSERT((*iter)->isVariableObject()); - JSVariableObject* scope = static_cast(*iter); - scope->registerAt(index) = JSValuePtr(callFrame[value].jsValue(callFrame)); - ++vPC; + JSVariableObject* scope = jsCast(iter->get()); + ASSERT(callFrame->r(value).jsValue()); + scope->registerAt(index).set(*globalData, scope, callFrame->r(value).jsValue()); + vPC += OPCODE_LENGTH(op_put_scoped_var); NEXT_INSTRUCTION(); } DEFINE_OPCODE(op_resolve_base) { - /* resolve_base dst(r) property(id) + /* resolve_base dst(r) property(id) isStrict(bool) Searches the scope chain for an object containing identifier property, and if one is found, writes it to - register dst. If none is found, the outermost scope (which - will be the global object) is stored in register dst. + register dst. If none is found and isStrict is false, the + outermost scope (which will be the global object) is + stored in register dst. */ resolveBase(callFrame, vPC); + CHECK_FOR_EXCEPTION(); + + vPC += OPCODE_LENGTH(op_resolve_base); + NEXT_INSTRUCTION(); + } + DEFINE_OPCODE(op_ensure_property_exists) { + /* ensure_property_exists base(r) property(id) + + Throws an exception if property does not exist on base + */ + int base = vPC[1].u.operand; + int property = vPC[2].u.operand; + Identifier& ident = codeBlock->identifier(property); + + JSValue baseVal = callFrame->r(base).jsValue(); + JSObject* baseObject = asObject(baseVal); + PropertySlot slot(baseVal); + if (!baseObject->getPropertySlot(callFrame, ident, slot)) { + exceptionValue = createErrorForInvalidGlobalAssignment(callFrame, ident.ustring()); + goto vm_throw; + } - vPC += 3; + vPC += OPCODE_LENGTH(op_ensure_property_exists); NEXT_INSTRUCTION(); } DEFINE_OPCODE(op_resolve_with_base) { @@ -2378,28 +3005,23 @@ JSValuePtr Interpreter::privateExecute(ExecutionFlag flag, RegisterFile* registe if (UNLIKELY(!resolveBaseAndProperty(callFrame, vPC, exceptionValue))) goto vm_throw; - vPC += 4; + vPC += OPCODE_LENGTH(op_resolve_with_base); NEXT_INSTRUCTION(); } - DEFINE_OPCODE(op_resolve_func) { - /* resolve_func baseDst(r) funcDst(r) property(id) + DEFINE_OPCODE(op_resolve_with_this) { + /* resolve_with_this thisDst(r) propDst(r) property(id) Searches the scope chain for an object containing identifier property, and if one is found, writes the - appropriate object to use as "this" when calling its - properties to register baseDst; and the retrieved property - value to register propDst. If the property is not found, - raises an exception. - - This differs from resolve_with_base, because the - global this value will be substituted for activations or - the global object, which is the right behavior for function - calls but not for other property lookup. + retrieved property value to register propDst, and the + this object to pass in a call to thisDst. + + If the property is not found, raises an exception. */ - if (UNLIKELY(!resolveBaseAndFunc(callFrame, vPC, exceptionValue))) + if (UNLIKELY(!resolveThisAndProperty(callFrame, vPC, exceptionValue))) goto vm_throw; - vPC += 4; + vPC += OPCODE_LENGTH(op_resolve_with_this); NEXT_INSTRUCTION(); } DEFINE_OPCODE(op_get_by_id) { @@ -2412,17 +3034,16 @@ JSValuePtr Interpreter::privateExecute(ExecutionFlag flag, RegisterFile* registe int base = vPC[2].u.operand; int property = vPC[3].u.operand; - CodeBlock* codeBlock = callFrame->codeBlock(); Identifier& ident = codeBlock->identifier(property); - JSValuePtr baseValue = callFrame[base].jsValue(callFrame); + JSValue baseValue = callFrame->r(base).jsValue(); PropertySlot slot(baseValue); - JSValuePtr result = baseValue.get(callFrame, ident, slot); + JSValue result = baseValue.get(callFrame, ident, slot); CHECK_FOR_EXCEPTION(); tryCacheGetByID(callFrame, codeBlock, vPC, baseValue, ident, slot); - callFrame[dst] = result; - vPC += 8; + callFrame->uncheckedR(dst) = result; + vPC += OPCODE_LENGTH(op_get_by_id); NEXT_INSTRUCTION(); } DEFINE_OPCODE(op_get_by_id_self) { @@ -2433,11 +3054,11 @@ JSValuePtr Interpreter::privateExecute(ExecutionFlag flag, RegisterFile* registe op_get_by_id. */ int base = vPC[2].u.operand; - JSValuePtr baseValue = callFrame[base].jsValue(callFrame); + JSValue baseValue = callFrame->r(base).jsValue(); if (LIKELY(baseValue.isCell())) { - JSCell* baseCell = asCell(baseValue); - Structure* structure = vPC[4].u.structure; + JSCell* baseCell = baseValue.asCell(); + Structure* structure = vPC[4].u.structure.get(); if (LIKELY(baseCell->structure() == structure)) { ASSERT(baseCell->isObject()); @@ -2445,15 +3066,15 @@ JSValuePtr Interpreter::privateExecute(ExecutionFlag flag, RegisterFile* registe int dst = vPC[1].u.operand; int offset = vPC[5].u.operand; - ASSERT(baseObject->get(callFrame, callFrame->codeBlock()->identifier(vPC[3].u.operand)) == baseObject->getDirectOffset(offset)); - callFrame[dst] = JSValuePtr(baseObject->getDirectOffset(offset)); + ASSERT(baseObject->get(callFrame, codeBlock->identifier(vPC[3].u.operand)) == baseObject->getDirectOffset(offset)); + callFrame->uncheckedR(dst) = JSValue(baseObject->getDirectOffset(offset)); - vPC += 8; + vPC += OPCODE_LENGTH(op_get_by_id_self); NEXT_INSTRUCTION(); } } - uncacheGetByID(callFrame->codeBlock(), vPC); + uncacheGetByID(codeBlock, vPC); NEXT_INSTRUCTION(); } DEFINE_OPCODE(op_get_by_id_proto) { @@ -2464,65 +3085,142 @@ JSValuePtr Interpreter::privateExecute(ExecutionFlag flag, RegisterFile* registe reverts to op_get_by_id. */ int base = vPC[2].u.operand; - JSValuePtr baseValue = callFrame[base].jsValue(callFrame); + JSValue baseValue = callFrame->r(base).jsValue(); if (LIKELY(baseValue.isCell())) { - JSCell* baseCell = asCell(baseValue); - Structure* structure = vPC[4].u.structure; + JSCell* baseCell = baseValue.asCell(); + Structure* structure = vPC[4].u.structure.get(); if (LIKELY(baseCell->structure() == structure)) { ASSERT(structure->prototypeForLookup(callFrame).isObject()); JSObject* protoObject = asObject(structure->prototypeForLookup(callFrame)); - Structure* prototypeStructure = vPC[5].u.structure; + Structure* prototypeStructure = vPC[5].u.structure.get(); if (LIKELY(protoObject->structure() == prototypeStructure)) { int dst = vPC[1].u.operand; int offset = vPC[6].u.operand; - ASSERT(protoObject->get(callFrame, callFrame->codeBlock()->identifier(vPC[3].u.operand)) == protoObject->getDirectOffset(offset)); - callFrame[dst] = JSValuePtr(protoObject->getDirectOffset(offset)); + ASSERT(protoObject->get(callFrame, codeBlock->identifier(vPC[3].u.operand)) == protoObject->getDirectOffset(offset)); + ASSERT(baseValue.get(callFrame, codeBlock->identifier(vPC[3].u.operand)) == protoObject->getDirectOffset(offset)); + callFrame->uncheckedR(dst) = JSValue(protoObject->getDirectOffset(offset)); - vPC += 8; + vPC += OPCODE_LENGTH(op_get_by_id_proto); NEXT_INSTRUCTION(); } } } - uncacheGetByID(callFrame->codeBlock(), vPC); - NEXT_INSTRUCTION(); - } - DEFINE_OPCODE(op_get_by_id_self_list) { - // Polymorphic self access caching currently only supported when JITting. - ASSERT_NOT_REACHED(); - // This case of the switch must not be empty, else (op_get_by_id_self_list == op_get_by_id_chain)! - vPC += 8; + uncacheGetByID(codeBlock, vPC); NEXT_INSTRUCTION(); } - DEFINE_OPCODE(op_get_by_id_proto_list) { - // Polymorphic prototype access caching currently only supported when JITting. - ASSERT_NOT_REACHED(); - // This case of the switch must not be empty, else (op_get_by_id_proto_list == op_get_by_id_chain)! - vPC += 8; +#if USE(GCC_COMPUTED_GOTO_WORKAROUND) + goto *(&&skip_id_getter_proto); +#endif + DEFINE_OPCODE(op_get_by_id_getter_proto) { + /* op_get_by_id_getter_proto dst(r) base(r) property(id) structure(sID) prototypeStructure(sID) offset(n) nop(n) + + Cached property access: Attempts to get a cached getter property from the + value base's prototype. If the cache misses, op_get_by_id_getter_proto + reverts to op_get_by_id. + */ + int base = vPC[2].u.operand; + JSValue baseValue = callFrame->r(base).jsValue(); + + if (LIKELY(baseValue.isCell())) { + JSCell* baseCell = baseValue.asCell(); + Structure* structure = vPC[4].u.structure.get(); + + if (LIKELY(baseCell->structure() == structure)) { + ASSERT(structure->prototypeForLookup(callFrame).isObject()); + JSObject* protoObject = asObject(structure->prototypeForLookup(callFrame)); + Structure* prototypeStructure = vPC[5].u.structure.get(); + + if (LIKELY(protoObject->structure() == prototypeStructure)) { + int dst = vPC[1].u.operand; + int offset = vPC[6].u.operand; + if (GetterSetter* getterSetter = asGetterSetter(protoObject->getDirectOffset(offset).asCell())) { + JSObject* getter = getterSetter->getter(); + CallData callData; + CallType callType = getter->methodTable()->getCallData(getter, callData); + JSValue result = call(callFrame, getter, callType, callData, asObject(baseCell), ArgList()); + CHECK_FOR_EXCEPTION(); + callFrame->uncheckedR(dst) = result; + } else + callFrame->uncheckedR(dst) = jsUndefined(); + vPC += OPCODE_LENGTH(op_get_by_id_getter_proto); + NEXT_INSTRUCTION(); + } + } + } + uncacheGetByID(codeBlock, vPC); NEXT_INSTRUCTION(); } - DEFINE_OPCODE(op_get_by_id_chain) { - /* op_get_by_id_chain dst(r) base(r) property(id) structure(sID) structureChain(chain) count(n) offset(n) - - Cached property access: Attempts to get a cached property from the - value base's prototype chain. If the cache misses, op_get_by_id_chain - reverts to op_get_by_id. - */ +#if USE(GCC_COMPUTED_GOTO_WORKAROUND) + skip_id_getter_proto: +#endif +#if USE(GCC_COMPUTED_GOTO_WORKAROUND) + goto *(&&skip_id_custom_proto); +#endif + DEFINE_OPCODE(op_get_by_id_custom_proto) { + /* op_get_by_id_custom_proto dst(r) base(r) property(id) structure(sID) prototypeStructure(sID) offset(n) nop(n) + + Cached property access: Attempts to use a cached named property getter + from the value base's prototype. If the cache misses, op_get_by_id_custom_proto + reverts to op_get_by_id. + */ int base = vPC[2].u.operand; - JSValuePtr baseValue = callFrame[base].jsValue(callFrame); - + JSValue baseValue = callFrame->r(base).jsValue(); + if (LIKELY(baseValue.isCell())) { - JSCell* baseCell = asCell(baseValue); - Structure* structure = vPC[4].u.structure; + JSCell* baseCell = baseValue.asCell(); + Structure* structure = vPC[4].u.structure.get(); + + if (LIKELY(baseCell->structure() == structure)) { + ASSERT(structure->prototypeForLookup(callFrame).isObject()); + JSObject* protoObject = asObject(structure->prototypeForLookup(callFrame)); + Structure* prototypeStructure = vPC[5].u.structure.get(); + + if (LIKELY(protoObject->structure() == prototypeStructure)) { + int dst = vPC[1].u.operand; + int property = vPC[3].u.operand; + Identifier& ident = codeBlock->identifier(property); + + PropertySlot::GetValueFunc getter = vPC[6].u.getterFunc; + JSValue result = getter(callFrame, protoObject, ident); + CHECK_FOR_EXCEPTION(); + callFrame->uncheckedR(dst) = result; + vPC += OPCODE_LENGTH(op_get_by_id_custom_proto); + NEXT_INSTRUCTION(); + } + } + } + uncacheGetByID(codeBlock, vPC); + NEXT_INSTRUCTION(); + } +#if USE(GCC_COMPUTED_GOTO_WORKAROUND) + skip_id_custom_proto: +#endif +#if USE(GCC_COMPUTED_GOTO_WORKAROUND) + goto *(&&skip_get_by_id_chain); +#endif + DEFINE_OPCODE(op_get_by_id_chain) { + /* op_get_by_id_chain dst(r) base(r) property(id) structure(sID) structureChain(chain) count(n) offset(n) + + Cached property access: Attempts to get a cached property from the + value base's prototype chain. If the cache misses, op_get_by_id_chain + reverts to op_get_by_id. + */ + int base = vPC[2].u.operand; + JSValue baseValue = callFrame->r(base).jsValue(); + + if (LIKELY(baseValue.isCell())) { + JSCell* baseCell = baseValue.asCell(); + Structure* structure = vPC[4].u.structure.get(); if (LIKELY(baseCell->structure() == structure)) { - RefPtr* it = vPC[5].u.structureChain->head(); + WriteBarrier* it = vPC[5].u.structureChain->head(); size_t count = vPC[6].u.operand; - RefPtr* end = it + count; + WriteBarrier* end = it + count; while (true) { JSObject* baseObject = asObject(baseCell->structure()->prototypeForLookup(callFrame)); @@ -2534,10 +3232,11 @@ JSValuePtr Interpreter::privateExecute(ExecutionFlag flag, RegisterFile* registe int dst = vPC[1].u.operand; int offset = vPC[7].u.operand; - ASSERT(baseObject->get(callFrame, callFrame->codeBlock()->identifier(vPC[3].u.operand)) == baseObject->getDirectOffset(offset)); - callFrame[dst] = JSValuePtr(baseObject->getDirectOffset(offset)); + ASSERT(baseObject->get(callFrame, codeBlock->identifier(vPC[3].u.operand)) == baseObject->getDirectOffset(offset)); + ASSERT(baseValue.get(callFrame, codeBlock->identifier(vPC[3].u.operand)) == baseObject->getDirectOffset(offset)); + callFrame->uncheckedR(dst) = JSValue(baseObject->getDirectOffset(offset)); - vPC += 8; + vPC += OPCODE_LENGTH(op_get_by_id_chain); NEXT_INSTRUCTION(); } @@ -2547,9 +3246,90 @@ JSValuePtr Interpreter::privateExecute(ExecutionFlag flag, RegisterFile* registe } } - uncacheGetByID(callFrame->codeBlock(), vPC); + uncacheGetByID(codeBlock, vPC); + NEXT_INSTRUCTION(); + } +#if USE(GCC_COMPUTED_GOTO_WORKAROUND) + skip_get_by_id_chain: + goto *(&&skip_id_getter_self); +#endif + DEFINE_OPCODE(op_get_by_id_getter_self) { + /* op_get_by_id_self dst(r) base(r) property(id) structure(sID) offset(n) nop(n) nop(n) + + Cached property access: Attempts to get a cached property from the + value base. If the cache misses, op_get_by_id_getter_self reverts to + op_get_by_id. + */ + int base = vPC[2].u.operand; + JSValue baseValue = callFrame->r(base).jsValue(); + + if (LIKELY(baseValue.isCell())) { + JSCell* baseCell = baseValue.asCell(); + Structure* structure = vPC[4].u.structure.get(); + + if (LIKELY(baseCell->structure() == structure)) { + ASSERT(baseCell->isObject()); + JSObject* baseObject = asObject(baseCell); + int dst = vPC[1].u.operand; + int offset = vPC[5].u.operand; + + if (GetterSetter* getterSetter = asGetterSetter(baseObject->getDirectOffset(offset).asCell())) { + JSObject* getter = getterSetter->getter(); + CallData callData; + CallType callType = getter->methodTable()->getCallData(getter, callData); + JSValue result = call(callFrame, getter, callType, callData, baseObject, ArgList()); + CHECK_FOR_EXCEPTION(); + callFrame->uncheckedR(dst) = result; + } else + callFrame->uncheckedR(dst) = jsUndefined(); + + vPC += OPCODE_LENGTH(op_get_by_id_getter_self); + NEXT_INSTRUCTION(); + } + } + uncacheGetByID(codeBlock, vPC); + NEXT_INSTRUCTION(); + } +#if USE(GCC_COMPUTED_GOTO_WORKAROUND) + skip_id_getter_self: +#endif +#if USE(GCC_COMPUTED_GOTO_WORKAROUND) + goto *(&&skip_id_custom_self); +#endif + DEFINE_OPCODE(op_get_by_id_custom_self) { + /* op_get_by_id_custom_self dst(r) base(r) property(id) structure(sID) offset(n) nop(n) nop(n) + + Cached property access: Attempts to use a cached named property getter + from the value base. If the cache misses, op_get_by_id_custom_self reverts to + op_get_by_id. + */ + int base = vPC[2].u.operand; + JSValue baseValue = callFrame->r(base).jsValue(); + + if (LIKELY(baseValue.isCell())) { + JSCell* baseCell = baseValue.asCell(); + Structure* structure = vPC[4].u.structure.get(); + + if (LIKELY(baseCell->structure() == structure)) { + ASSERT(baseCell->isObject()); + int dst = vPC[1].u.operand; + int property = vPC[3].u.operand; + Identifier& ident = codeBlock->identifier(property); + + PropertySlot::GetValueFunc getter = vPC[5].u.getterFunc; + JSValue result = getter(callFrame, baseValue, ident); + CHECK_FOR_EXCEPTION(); + callFrame->uncheckedR(dst) = result; + vPC += OPCODE_LENGTH(op_get_by_id_custom_self); + NEXT_INSTRUCTION(); + } + } + uncacheGetByID(codeBlock, vPC); NEXT_INSTRUCTION(); } +#if USE(GCC_COMPUTED_GOTO_WORKAROUND) +skip_id_custom_self: +#endif DEFINE_OPCODE(op_get_by_id_generic) { /* op_get_by_id_generic dst(r) base(r) property(id) nop(sID) nop(n) nop(n) nop(n) @@ -2560,16 +3340,124 @@ JSValuePtr Interpreter::privateExecute(ExecutionFlag flag, RegisterFile* registe int base = vPC[2].u.operand; int property = vPC[3].u.operand; - Identifier& ident = callFrame->codeBlock()->identifier(property); - JSValuePtr baseValue = callFrame[base].jsValue(callFrame); + Identifier& ident = codeBlock->identifier(property); + JSValue baseValue = callFrame->r(base).jsValue(); PropertySlot slot(baseValue); - JSValuePtr result = baseValue.get(callFrame, ident, slot); + JSValue result = baseValue.get(callFrame, ident, slot); CHECK_FOR_EXCEPTION(); - callFrame[dst] = result; - vPC += 8; + callFrame->uncheckedR(dst) = result; + vPC += OPCODE_LENGTH(op_get_by_id_generic); + NEXT_INSTRUCTION(); + } +#if USE(GCC_COMPUTED_GOTO_WORKAROUND) + goto *(&&skip_id_getter_chain); +#endif + DEFINE_OPCODE(op_get_by_id_getter_chain) { + /* op_get_by_id_getter_chain dst(r) base(r) property(id) structure(sID) structureChain(chain) count(n) offset(n) + + Cached property access: Attempts to get a cached property from the + value base's prototype chain. If the cache misses, op_get_by_id_getter_chain + reverts to op_get_by_id. + */ + int base = vPC[2].u.operand; + JSValue baseValue = callFrame->r(base).jsValue(); + + if (LIKELY(baseValue.isCell())) { + JSCell* baseCell = baseValue.asCell(); + Structure* structure = vPC[4].u.structure.get(); + + if (LIKELY(baseCell->structure() == structure)) { + WriteBarrier* it = vPC[5].u.structureChain->head(); + size_t count = vPC[6].u.operand; + WriteBarrier* end = it + count; + + while (true) { + JSObject* baseObject = asObject(baseCell->structure()->prototypeForLookup(callFrame)); + + if (UNLIKELY(baseObject->structure() != (*it).get())) + break; + + if (++it == end) { + int dst = vPC[1].u.operand; + int offset = vPC[7].u.operand; + if (GetterSetter* getterSetter = asGetterSetter(baseObject->getDirectOffset(offset).asCell())) { + JSObject* getter = getterSetter->getter(); + CallData callData; + CallType callType = getter->methodTable()->getCallData(getter, callData); + JSValue result = call(callFrame, getter, callType, callData, baseValue, ArgList()); + CHECK_FOR_EXCEPTION(); + callFrame->uncheckedR(dst) = result; + } else + callFrame->uncheckedR(dst) = jsUndefined(); + vPC += OPCODE_LENGTH(op_get_by_id_getter_chain); + NEXT_INSTRUCTION(); + } + + // Update baseCell, so that next time around the loop we'll pick up the prototype's prototype. + baseCell = baseObject; + } + } + } + uncacheGetByID(codeBlock, vPC); + NEXT_INSTRUCTION(); + } +#if USE(GCC_COMPUTED_GOTO_WORKAROUND) + skip_id_getter_chain: +#endif +#if USE(GCC_COMPUTED_GOTO_WORKAROUND) + goto *(&&skip_id_custom_chain); +#endif + DEFINE_OPCODE(op_get_by_id_custom_chain) { + /* op_get_by_id_custom_chain dst(r) base(r) property(id) structure(sID) structureChain(chain) count(n) offset(n) + + Cached property access: Attempts to use a cached named property getter on the + value base's prototype chain. If the cache misses, op_get_by_id_custom_chain + reverts to op_get_by_id. + */ + int base = vPC[2].u.operand; + JSValue baseValue = callFrame->r(base).jsValue(); + + if (LIKELY(baseValue.isCell())) { + JSCell* baseCell = baseValue.asCell(); + Structure* structure = vPC[4].u.structure.get(); + + if (LIKELY(baseCell->structure() == structure)) { + WriteBarrier* it = vPC[5].u.structureChain->head(); + size_t count = vPC[6].u.operand; + WriteBarrier* end = it + count; + + while (true) { + JSObject* baseObject = asObject(baseCell->structure()->prototypeForLookup(callFrame)); + + if (UNLIKELY(baseObject->structure() != (*it).get())) + break; + + if (++it == end) { + int dst = vPC[1].u.operand; + int property = vPC[3].u.operand; + Identifier& ident = codeBlock->identifier(property); + + PropertySlot::GetValueFunc getter = vPC[7].u.getterFunc; + JSValue result = getter(callFrame, baseObject, ident); + CHECK_FOR_EXCEPTION(); + callFrame->uncheckedR(dst) = result; + vPC += OPCODE_LENGTH(op_get_by_id_custom_chain); + NEXT_INSTRUCTION(); + } + + // Update baseCell, so that next time around the loop we'll pick up the prototype's prototype. + baseCell = baseObject; + } + } + } + uncacheGetByID(codeBlock, vPC); NEXT_INSTRUCTION(); } +#if USE(GCC_COMPUTED_GOTO_WORKAROUND) + skip_id_custom_chain: + goto *(&&skip_get_array_length); +#endif DEFINE_OPCODE(op_get_array_length) { /* op_get_array_length dst(r) base(r) property(id) nop(sID) nop(n) nop(n) nop(n) @@ -2579,17 +3467,21 @@ JSValuePtr Interpreter::privateExecute(ExecutionFlag flag, RegisterFile* registe */ int base = vPC[2].u.operand; - JSValuePtr baseValue = callFrame[base].jsValue(callFrame); + JSValue baseValue = callFrame->r(base).jsValue(); if (LIKELY(isJSArray(baseValue))) { int dst = vPC[1].u.operand; - callFrame[dst] = JSValuePtr(jsNumber(callFrame, asArray(baseValue)->length())); - vPC += 8; + callFrame->uncheckedR(dst) = jsNumber(asArray(baseValue)->length()); + vPC += OPCODE_LENGTH(op_get_array_length); NEXT_INSTRUCTION(); } - uncacheGetByID(callFrame->codeBlock(), vPC); + uncacheGetByID(codeBlock, vPC); NEXT_INSTRUCTION(); } +#if USE(GCC_COMPUTED_GOTO_WORKAROUND) + skip_get_array_length: + goto *(&&skip_get_string_length); +#endif DEFINE_OPCODE(op_get_string_length) { /* op_get_string_length dst(r) base(r) property(id) nop(sID) nop(n) nop(n) nop(n) @@ -2599,45 +3491,61 @@ JSValuePtr Interpreter::privateExecute(ExecutionFlag flag, RegisterFile* registe */ int base = vPC[2].u.operand; - JSValuePtr baseValue = callFrame[base].jsValue(callFrame); + JSValue baseValue = callFrame->r(base).jsValue(); if (LIKELY(isJSString(baseValue))) { int dst = vPC[1].u.operand; - callFrame[dst] = JSValuePtr(jsNumber(callFrame, asString(baseValue)->value().size())); - vPC += 8; + callFrame->uncheckedR(dst) = jsNumber(asString(baseValue)->length()); + vPC += OPCODE_LENGTH(op_get_string_length); NEXT_INSTRUCTION(); } - uncacheGetByID(callFrame->codeBlock(), vPC); + uncacheGetByID(codeBlock, vPC); NEXT_INSTRUCTION(); } +#if USE(GCC_COMPUTED_GOTO_WORKAROUND) + skip_get_string_length: + goto *(&&skip_put_by_id); +#endif DEFINE_OPCODE(op_put_by_id) { - /* put_by_id base(r) property(id) value(r) nop(n) nop(n) nop(n) nop(n) + /* put_by_id base(r) property(id) value(r) nop(n) nop(n) nop(n) nop(n) direct(b) Generic property access: Sets the property named by identifier property, belonging to register base, to register value. Unlike many opcodes, this one does not write any output to the register file. + + The "direct" flag should only be set this put_by_id is to initialize + an object literal. */ int base = vPC[1].u.operand; int property = vPC[2].u.operand; int value = vPC[3].u.operand; + int direct = vPC[8].u.operand; - CodeBlock* codeBlock = callFrame->codeBlock(); - JSValuePtr baseValue = callFrame[base].jsValue(callFrame); + JSValue baseValue = callFrame->r(base).jsValue(); Identifier& ident = codeBlock->identifier(property); - PutPropertySlot slot; - baseValue.put(callFrame, ident, callFrame[value].jsValue(callFrame), slot); + PutPropertySlot slot(codeBlock->isStrictMode()); + if (direct) { + ASSERT(baseValue.isObject()); + asObject(baseValue)->putDirect(*globalData, ident, callFrame->r(value).jsValue(), slot); + } else + baseValue.put(callFrame, ident, callFrame->r(value).jsValue(), slot); CHECK_FOR_EXCEPTION(); tryCachePutByID(callFrame, codeBlock, vPC, baseValue, slot); - vPC += 8; + vPC += OPCODE_LENGTH(op_put_by_id); NEXT_INSTRUCTION(); } +#if USE(GCC_COMPUTED_GOTO_WORKAROUND) + skip_put_by_id: +#endif + DEFINE_OPCODE(op_put_by_id_transition_direct) + DEFINE_OPCODE(op_put_by_id_transition_normal) DEFINE_OPCODE(op_put_by_id_transition) { - /* op_put_by_id_transition base(r) property(id) value(r) oldStructure(sID) newStructure(sID) structureChain(chain) offset(n) + /* op_put_by_id_transition base(r) property(id) value(r) oldStructure(sID) newStructure(sID) structureChain(chain) offset(n) direct(b) Cached property access: Attempts to set a new property with a cached transition property named by identifier property, belonging to register base, @@ -2648,46 +3556,48 @@ JSValuePtr Interpreter::privateExecute(ExecutionFlag flag, RegisterFile* registe the register file. */ int base = vPC[1].u.operand; - JSValuePtr baseValue = callFrame[base].jsValue(callFrame); + JSValue baseValue = callFrame->r(base).jsValue(); if (LIKELY(baseValue.isCell())) { - JSCell* baseCell = asCell(baseValue); - Structure* oldStructure = vPC[4].u.structure; - Structure* newStructure = vPC[5].u.structure; + JSCell* baseCell = baseValue.asCell(); + Structure* oldStructure = vPC[4].u.structure.get(); + Structure* newStructure = vPC[5].u.structure.get(); if (LIKELY(baseCell->structure() == oldStructure)) { ASSERT(baseCell->isObject()); JSObject* baseObject = asObject(baseCell); - - RefPtr* it = vPC[6].u.structureChain->head(); - - JSValuePtr proto = baseObject->structure()->prototypeForLookup(callFrame); - while (!proto.isNull()) { - if (UNLIKELY(asObject(proto)->structure() != (*it).get())) { - uncachePutByID(callFrame->codeBlock(), vPC); - NEXT_INSTRUCTION(); + int direct = vPC[8].u.operand; + + if (!direct) { + WriteBarrier* it = vPC[6].u.structureChain->head(); + + JSValue proto = baseObject->structure()->prototypeForLookup(callFrame); + while (!proto.isNull()) { + if (UNLIKELY(asObject(proto)->structure() != (*it).get())) { + uncachePutByID(codeBlock, vPC); + NEXT_INSTRUCTION(); + } + ++it; + proto = asObject(proto)->structure()->prototypeForLookup(callFrame); } - ++it; - proto = asObject(proto)->structure()->prototypeForLookup(callFrame); } - - baseObject->transitionTo(newStructure); + baseObject->transitionTo(*globalData, newStructure); int value = vPC[3].u.operand; unsigned offset = vPC[7].u.operand; - ASSERT(baseObject->offsetForLocation(baseObject->getDirectLocation(callFrame->codeBlock()->identifier(vPC[2].u.operand))) == offset); - baseObject->putDirectOffset(offset, callFrame[value].jsValue(callFrame)); + ASSERT(baseObject->offsetForLocation(baseObject->getDirectLocation(*globalData, codeBlock->identifier(vPC[2].u.operand))) == offset); + baseObject->putDirectOffset(callFrame->globalData(), offset, callFrame->r(value).jsValue()); - vPC += 8; + vPC += OPCODE_LENGTH(op_put_by_id_transition); NEXT_INSTRUCTION(); } } - uncachePutByID(callFrame->codeBlock(), vPC); + uncachePutByID(codeBlock, vPC); NEXT_INSTRUCTION(); } DEFINE_OPCODE(op_put_by_id_replace) { - /* op_put_by_id_replace base(r) property(id) value(r) structure(sID) offset(n) nop(n) nop(n) + /* op_put_by_id_replace base(r) property(id) value(r) structure(sID) offset(n) nop(n) nop(n) direct(b) Cached property access: Attempts to set a pre-existing, cached property named by identifier property, belonging to register base, @@ -2698,11 +3608,11 @@ JSValuePtr Interpreter::privateExecute(ExecutionFlag flag, RegisterFile* registe the register file. */ int base = vPC[1].u.operand; - JSValuePtr baseValue = callFrame[base].jsValue(callFrame); + JSValue baseValue = callFrame->r(base).jsValue(); if (LIKELY(baseValue.isCell())) { - JSCell* baseCell = asCell(baseValue); - Structure* structure = vPC[4].u.structure; + JSCell* baseCell = baseValue.asCell(); + Structure* structure = vPC[4].u.structure.get(); if (LIKELY(baseCell->structure() == structure)) { ASSERT(baseCell->isObject()); @@ -2710,19 +3620,19 @@ JSValuePtr Interpreter::privateExecute(ExecutionFlag flag, RegisterFile* registe int value = vPC[3].u.operand; unsigned offset = vPC[5].u.operand; - ASSERT(baseObject->offsetForLocation(baseObject->getDirectLocation(callFrame->codeBlock()->identifier(vPC[2].u.operand))) == offset); - baseObject->putDirectOffset(offset, callFrame[value].jsValue(callFrame)); + ASSERT(baseObject->offsetForLocation(baseObject->getDirectLocation(*globalData, codeBlock->identifier(vPC[2].u.operand))) == offset); + baseObject->putDirectOffset(callFrame->globalData(), offset, callFrame->r(value).jsValue()); - vPC += 8; + vPC += OPCODE_LENGTH(op_put_by_id_replace); NEXT_INSTRUCTION(); } } - uncachePutByID(callFrame->codeBlock(), vPC); + uncachePutByID(codeBlock, vPC); NEXT_INSTRUCTION(); } DEFINE_OPCODE(op_put_by_id_generic) { - /* op_put_by_id_generic base(r) property(id) value(r) nop(n) nop(n) nop(n) nop(n) + /* op_put_by_id_generic base(r) property(id) value(r) nop(n) nop(n) nop(n) nop(n) direct(b) Generic property access: Sets the property named by identifier property, belonging to register base, to register value. @@ -2733,14 +3643,19 @@ JSValuePtr Interpreter::privateExecute(ExecutionFlag flag, RegisterFile* registe int base = vPC[1].u.operand; int property = vPC[2].u.operand; int value = vPC[3].u.operand; + int direct = vPC[8].u.operand; - JSValuePtr baseValue = callFrame[base].jsValue(callFrame); - Identifier& ident = callFrame->codeBlock()->identifier(property); - PutPropertySlot slot; - baseValue.put(callFrame, ident, callFrame[value].jsValue(callFrame), slot); + JSValue baseValue = callFrame->r(base).jsValue(); + Identifier& ident = codeBlock->identifier(property); + PutPropertySlot slot(codeBlock->isStrictMode()); + if (direct) { + ASSERT(baseValue.isObject()); + asObject(baseValue)->putDirect(*globalData, ident, callFrame->r(value).jsValue(), slot); + } else + baseValue.put(callFrame, ident, callFrame->r(value).jsValue(), slot); CHECK_FOR_EXCEPTION(); - vPC += 8; + vPC += OPCODE_LENGTH(op_put_by_id_generic); NEXT_INSTRUCTION(); } DEFINE_OPCODE(op_del_by_id) { @@ -2751,18 +3666,86 @@ JSValuePtr Interpreter::privateExecute(ExecutionFlag flag, RegisterFile* registe boolean indicating success (if true) or failure (if false) to register dst. */ - int dst = (++vPC)->u.operand; - int base = (++vPC)->u.operand; - int property = (++vPC)->u.operand; + int dst = vPC[1].u.operand; + int base = vPC[2].u.operand; + int property = vPC[3].u.operand; - JSObject* baseObj = callFrame[base].jsValue(callFrame).toObject(callFrame); - Identifier& ident = callFrame->codeBlock()->identifier(property); - JSValuePtr result = jsBoolean(baseObj->deleteProperty(callFrame, ident)); + JSObject* baseObj = callFrame->r(base).jsValue().toObject(callFrame); + Identifier& ident = codeBlock->identifier(property); + bool result = baseObj->methodTable()->deleteProperty(baseObj, callFrame, ident); + if (!result && codeBlock->isStrictMode()) { + exceptionValue = createTypeError(callFrame, "Unable to delete property."); + goto vm_throw; + } + CHECK_FOR_EXCEPTION(); + callFrame->uncheckedR(dst) = jsBoolean(result); + vPC += OPCODE_LENGTH(op_del_by_id); + NEXT_INSTRUCTION(); + } + DEFINE_OPCODE(op_get_by_pname) { + int dst = vPC[1].u.operand; + int base = vPC[2].u.operand; + int property = vPC[3].u.operand; + int expected = vPC[4].u.operand; + int iter = vPC[5].u.operand; + int i = vPC[6].u.operand; + + JSValue baseValue = callFrame->r(base).jsValue(); + JSPropertyNameIterator* it = callFrame->r(iter).propertyNameIterator(); + JSValue subscript = callFrame->r(property).jsValue(); + JSValue expectedSubscript = callFrame->r(expected).jsValue(); + int index = callFrame->r(i).i() - 1; + JSValue result; + int offset = 0; + if (subscript == expectedSubscript && baseValue.isCell() && (baseValue.asCell()->structure() == it->cachedStructure()) && it->getOffset(index, offset)) { + callFrame->uncheckedR(dst) = JSValue(asObject(baseValue)->getDirectOffset(offset)); + vPC += OPCODE_LENGTH(op_get_by_pname); + NEXT_INSTRUCTION(); + } + { + Identifier propertyName(callFrame, subscript.toString(callFrame)->value(callFrame)); + result = baseValue.get(callFrame, propertyName); + } CHECK_FOR_EXCEPTION(); - callFrame[dst] = result; - ++vPC; + callFrame->uncheckedR(dst) = result; + vPC += OPCODE_LENGTH(op_get_by_pname); NEXT_INSTRUCTION(); } + DEFINE_OPCODE(op_get_arguments_length) { + int dst = vPC[1].u.operand; + int argumentsRegister = vPC[2].u.operand; + int property = vPC[3].u.operand; + JSValue arguments = callFrame->r(argumentsRegister).jsValue(); + if (arguments) { + Identifier& ident = codeBlock->identifier(property); + PropertySlot slot(arguments); + JSValue result = arguments.get(callFrame, ident, slot); + CHECK_FOR_EXCEPTION(); + callFrame->uncheckedR(dst) = result; + } else + callFrame->uncheckedR(dst) = jsNumber(callFrame->argumentCount()); + + vPC += OPCODE_LENGTH(op_get_arguments_length); + NEXT_INSTRUCTION(); + } + DEFINE_OPCODE(op_get_argument_by_val) { + int dst = vPC[1].u.operand; + int argumentsRegister = vPC[2].u.operand; + int property = vPC[3].u.operand; + JSValue arguments = callFrame->r(argumentsRegister).jsValue(); + JSValue subscript = callFrame->r(property).jsValue(); + if (!arguments && subscript.isUInt32() && subscript.asUInt32() < callFrame->argumentCount()) { + callFrame->uncheckedR(dst) = callFrame->argument(subscript.asUInt32()); + vPC += OPCODE_LENGTH(op_get_argument_by_val); + NEXT_INSTRUCTION(); + } + if (!arguments) { + Arguments* arguments = Arguments::create(*globalData, callFrame); + callFrame->uncheckedR(argumentsRegister) = JSValue(arguments); + callFrame->uncheckedR(unmodifiedArgumentsRegister(argumentsRegister)) = JSValue(arguments); + } + // fallthrough + } DEFINE_OPCODE(op_get_by_val) { /* get_by_val dst(r) base(r) property(r) @@ -2771,17 +3754,17 @@ JSValuePtr Interpreter::privateExecute(ExecutionFlag flag, RegisterFile* registe in register dst. property is nominally converted to string but numbers are treated more efficiently. */ - int dst = (++vPC)->u.operand; - int base = (++vPC)->u.operand; - int property = (++vPC)->u.operand; + int dst = vPC[1].u.operand; + int base = vPC[2].u.operand; + int property = vPC[3].u.operand; - JSValuePtr baseValue = callFrame[base].jsValue(callFrame); - JSValuePtr subscript = callFrame[property].jsValue(callFrame); + JSValue baseValue = callFrame->r(base).jsValue(); + JSValue subscript = callFrame->r(property).jsValue(); - JSValuePtr result; + JSValue result; - if (LIKELY(subscript.isUInt32Fast())) { - uint32_t i = subscript.getUInt32Fast(); + if (LIKELY(subscript.isUInt32())) { + uint32_t i = subscript.asUInt32(); if (isJSArray(baseValue)) { JSArray* jsArray = asArray(baseValue); if (jsArray->canGetIndex(i)) @@ -2789,19 +3772,17 @@ JSValuePtr Interpreter::privateExecute(ExecutionFlag flag, RegisterFile* registe else result = jsArray->JSArray::get(callFrame, i); } else if (isJSString(baseValue) && asString(baseValue)->canGetIndex(i)) - result = asString(baseValue)->getIndex(&callFrame->globalData(), i); - else if (isJSByteArray(baseValue) && asByteArray(baseValue)->canAccessIndex(i)) - result = asByteArray(baseValue)->getIndex(callFrame, i); + result = asString(baseValue)->getIndex(callFrame, i); else result = baseValue.get(callFrame, i); } else { - Identifier property(callFrame, subscript.toString(callFrame)); + Identifier property(callFrame, subscript.toString(callFrame)->value(callFrame)); result = baseValue.get(callFrame, property); } CHECK_FOR_EXCEPTION(); - callFrame[dst] = result; - ++vPC; + callFrame->uncheckedR(dst) = result; + vPC += OPCODE_LENGTH(op_get_by_val); NEXT_INSTRUCTION(); } DEFINE_OPCODE(op_put_by_val) { @@ -2815,43 +3796,33 @@ JSValuePtr Interpreter::privateExecute(ExecutionFlag flag, RegisterFile* registe Unlike many opcodes, this one does not write any output to the register file. */ - int base = (++vPC)->u.operand; - int property = (++vPC)->u.operand; - int value = (++vPC)->u.operand; + int base = vPC[1].u.operand; + int property = vPC[2].u.operand; + int value = vPC[3].u.operand; - JSValuePtr baseValue = callFrame[base].jsValue(callFrame); - JSValuePtr subscript = callFrame[property].jsValue(callFrame); + JSValue baseValue = callFrame->r(base).jsValue(); + JSValue subscript = callFrame->r(property).jsValue(); - if (LIKELY(subscript.isUInt32Fast())) { - uint32_t i = subscript.getUInt32Fast(); + if (LIKELY(subscript.isUInt32())) { + uint32_t i = subscript.asUInt32(); if (isJSArray(baseValue)) { JSArray* jsArray = asArray(baseValue); if (jsArray->canSetIndex(i)) - jsArray->setIndex(i, callFrame[value].jsValue(callFrame)); - else - jsArray->JSArray::put(callFrame, i, callFrame[value].jsValue(callFrame)); - } else if (isJSByteArray(baseValue) && asByteArray(baseValue)->canAccessIndex(i)) { - JSByteArray* jsByteArray = asByteArray(baseValue); - double dValue = 0; - JSValuePtr jsValue = callFrame[value].jsValue(callFrame); - if (jsValue.isInt32Fast()) - jsByteArray->setIndex(i, jsValue.getInt32Fast()); - else if (jsValue.getNumber(dValue)) - jsByteArray->setIndex(i, dValue); + jsArray->setIndex(*globalData, i, callFrame->r(value).jsValue()); else - baseValue.put(callFrame, i, jsValue); + jsArray->JSArray::putByIndex(jsArray, callFrame, i, callFrame->r(value).jsValue(), codeBlock->isStrictMode()); } else - baseValue.put(callFrame, i, callFrame[value].jsValue(callFrame)); + baseValue.putByIndex(callFrame, i, callFrame->r(value).jsValue(), codeBlock->isStrictMode()); } else { - Identifier property(callFrame, subscript.toString(callFrame)); + Identifier property(callFrame, subscript.toString(callFrame)->value(callFrame)); if (!globalData->exception) { // Don't put to an object if toString threw an exception. - PutPropertySlot slot; - baseValue.put(callFrame, property, callFrame[value].jsValue(callFrame), slot); + PutPropertySlot slot(codeBlock->isStrictMode()); + baseValue.put(callFrame, property, callFrame->r(value).jsValue(), slot); } } CHECK_FOR_EXCEPTION(); - ++vPC; + vPC += OPCODE_LENGTH(op_put_by_val); NEXT_INSTRUCTION(); } DEFINE_OPCODE(op_del_by_val) { @@ -2862,27 +3833,30 @@ JSValuePtr Interpreter::privateExecute(ExecutionFlag flag, RegisterFile* registe boolean indicating success (if true) or failure (if false) to register dst. */ - int dst = (++vPC)->u.operand; - int base = (++vPC)->u.operand; - int property = (++vPC)->u.operand; + int dst = vPC[1].u.operand; + int base = vPC[2].u.operand; + int property = vPC[3].u.operand; - JSObject* baseObj = callFrame[base].jsValue(callFrame).toObject(callFrame); // may throw + JSObject* baseObj = callFrame->r(base).jsValue().toObject(callFrame); // may throw - JSValuePtr subscript = callFrame[property].jsValue(callFrame); - JSValuePtr result; + JSValue subscript = callFrame->r(property).jsValue(); + bool result; uint32_t i; if (subscript.getUInt32(i)) - result = jsBoolean(baseObj->deleteProperty(callFrame, i)); + result = baseObj->methodTable()->deletePropertyByIndex(baseObj, callFrame, i); else { CHECK_FOR_EXCEPTION(); - Identifier property(callFrame, subscript.toString(callFrame)); + Identifier property(callFrame, subscript.toString(callFrame)->value(callFrame)); CHECK_FOR_EXCEPTION(); - result = jsBoolean(baseObj->deleteProperty(callFrame, property)); + result = baseObj->methodTable()->deleteProperty(baseObj, callFrame, property); + } + if (!result && codeBlock->isStrictMode()) { + exceptionValue = createTypeError(callFrame, "Unable to delete property."); + goto vm_throw; } - CHECK_FOR_EXCEPTION(); - callFrame[dst] = result; - ++vPC; + callFrame->uncheckedR(dst) = jsBoolean(result); + vPC += OPCODE_LENGTH(op_del_by_val); NEXT_INSTRUCTION(); } DEFINE_OPCODE(op_put_by_index) { @@ -2897,13 +3871,15 @@ JSValuePtr Interpreter::privateExecute(ExecutionFlag flag, RegisterFile* registe This opcode is mainly used to initialize array literals. */ - int base = (++vPC)->u.operand; - unsigned property = (++vPC)->u.operand; - int value = (++vPC)->u.operand; + int base = vPC[1].u.operand; + unsigned property = vPC[2].u.operand; + int value = vPC[3].u.operand; - callFrame[base].jsValue(callFrame).put(callFrame, property, callFrame[value].jsValue(callFrame)); + JSValue arrayValue = callFrame->r(base).jsValue(); + ASSERT(isJSArray(arrayValue)); + asArray(arrayValue)->putDirectIndex(callFrame, property, callFrame->r(value).jsValue(), false); - ++vPC; + vPC += OPCODE_LENGTH(op_put_by_index); NEXT_INSTRUCTION(); } DEFINE_OPCODE(op_loop) { @@ -2918,7 +3894,7 @@ JSValuePtr Interpreter::privateExecute(ExecutionFlag flag, RegisterFile* registe #if ENABLE(OPCODE_STATS) OpcodeStats::resetLastInstruction(); #endif - int target = (++vPC)->u.operand; + int target = vPC[1].u.operand; CHECK_FOR_TIMEOUT(); vPC += target; NEXT_INSTRUCTION(); @@ -2932,11 +3908,16 @@ JSValuePtr Interpreter::privateExecute(ExecutionFlag flag, RegisterFile* registe #if ENABLE(OPCODE_STATS) OpcodeStats::resetLastInstruction(); #endif - int target = (++vPC)->u.operand; + int target = vPC[1].u.operand; vPC += target; NEXT_INSTRUCTION(); } + DEFINE_OPCODE(op_loop_hint) { + // This is a no-op unless we intend on doing OSR from the interpreter. + vPC += OPCODE_LENGTH(op_loop_hint); + NEXT_INSTRUCTION(); + } DEFINE_OPCODE(op_loop_if_true) { /* loop_if_true cond(r) target(offset) @@ -2946,15 +3927,35 @@ JSValuePtr Interpreter::privateExecute(ExecutionFlag flag, RegisterFile* registe Additionally this loop instruction may terminate JS execution is the JS timeout is reached. */ - int cond = (++vPC)->u.operand; - int target = (++vPC)->u.operand; - if (callFrame[cond].jsValue(callFrame).toBoolean(callFrame)) { + int cond = vPC[1].u.operand; + int target = vPC[2].u.operand; + if (callFrame->r(cond).jsValue().toBoolean(callFrame)) { + vPC += target; + CHECK_FOR_TIMEOUT(); + NEXT_INSTRUCTION(); + } + + vPC += OPCODE_LENGTH(op_loop_if_true); + NEXT_INSTRUCTION(); + } + DEFINE_OPCODE(op_loop_if_false) { + /* loop_if_true cond(r) target(offset) + + Jumps to offset target from the current instruction, if and + only if register cond converts to boolean as false. + + Additionally this loop instruction may terminate JS execution is + the JS timeout is reached. + */ + int cond = vPC[1].u.operand; + int target = vPC[2].u.operand; + if (!callFrame->r(cond).jsValue().toBoolean(callFrame)) { vPC += target; CHECK_FOR_TIMEOUT(); NEXT_INSTRUCTION(); } - ++vPC; + vPC += OPCODE_LENGTH(op_loop_if_true); NEXT_INSTRUCTION(); } DEFINE_OPCODE(op_jtrue) { @@ -2963,14 +3964,14 @@ JSValuePtr Interpreter::privateExecute(ExecutionFlag flag, RegisterFile* registe Jumps to offset target from the current instruction, if and only if register cond converts to boolean as true. */ - int cond = (++vPC)->u.operand; - int target = (++vPC)->u.operand; - if (callFrame[cond].jsValue(callFrame).toBoolean(callFrame)) { + int cond = vPC[1].u.operand; + int target = vPC[2].u.operand; + if (callFrame->r(cond).jsValue().toBoolean(callFrame)) { vPC += target; NEXT_INSTRUCTION(); } - ++vPC; + vPC += OPCODE_LENGTH(op_jtrue); NEXT_INSTRUCTION(); } DEFINE_OPCODE(op_jfalse) { @@ -2979,14 +3980,14 @@ JSValuePtr Interpreter::privateExecute(ExecutionFlag flag, RegisterFile* registe Jumps to offset target from the current instruction, if and only if register cond converts to boolean as false. */ - int cond = (++vPC)->u.operand; - int target = (++vPC)->u.operand; - if (!callFrame[cond].jsValue(callFrame).toBoolean(callFrame)) { + int cond = vPC[1].u.operand; + int target = vPC[2].u.operand; + if (!callFrame->r(cond).jsValue().toBoolean(callFrame)) { vPC += target; NEXT_INSTRUCTION(); } - ++vPC; + vPC += OPCODE_LENGTH(op_jfalse); NEXT_INSTRUCTION(); } DEFINE_OPCODE(op_jeq_null) { @@ -2995,16 +3996,16 @@ JSValuePtr Interpreter::privateExecute(ExecutionFlag flag, RegisterFile* registe Jumps to offset target from the current instruction, if and only if register src is null. */ - int src = (++vPC)->u.operand; - int target = (++vPC)->u.operand; - JSValuePtr srcValue = callFrame[src].jsValue(callFrame); + int src = vPC[1].u.operand; + int target = vPC[2].u.operand; + JSValue srcValue = callFrame->r(src).jsValue(); if (srcValue.isUndefinedOrNull() || (srcValue.isCell() && srcValue.asCell()->structure()->typeInfo().masqueradesAsUndefined())) { vPC += target; NEXT_INSTRUCTION(); } - ++vPC; + vPC += OPCODE_LENGTH(op_jeq_null); NEXT_INSTRUCTION(); } DEFINE_OPCODE(op_jneq_null) { @@ -3013,16 +4014,33 @@ JSValuePtr Interpreter::privateExecute(ExecutionFlag flag, RegisterFile* registe Jumps to offset target from the current instruction, if and only if register src is not null. */ - int src = (++vPC)->u.operand; - int target = (++vPC)->u.operand; - JSValuePtr srcValue = callFrame[src].jsValue(callFrame); + int src = vPC[1].u.operand; + int target = vPC[2].u.operand; + JSValue srcValue = callFrame->r(src).jsValue(); + + if (!srcValue.isUndefinedOrNull() && (!srcValue.isCell() || !srcValue.asCell()->structure()->typeInfo().masqueradesAsUndefined())) { + vPC += target; + NEXT_INSTRUCTION(); + } - if (!srcValue.isUndefinedOrNull() || (srcValue.isCell() && !srcValue.asCell()->structure()->typeInfo().masqueradesAsUndefined())) { + vPC += OPCODE_LENGTH(op_jneq_null); + NEXT_INSTRUCTION(); + } + DEFINE_OPCODE(op_jneq_ptr) { + /* jneq_ptr src(r) ptr(jsCell) target(offset) + + Jumps to offset target from the current instruction, if the value r is equal + to ptr, using pointer equality. + */ + int src = vPC[1].u.operand; + int target = vPC[3].u.operand; + JSValue srcValue = callFrame->r(src).jsValue(); + if (srcValue != vPC[2].u.jsCell.get()) { vPC += target; NEXT_INSTRUCTION(); } - ++vPC; + vPC += OPCODE_LENGTH(op_jneq_ptr); NEXT_INSTRUCTION(); } DEFINE_OPCODE(op_loop_if_less) { @@ -3036,11 +4054,11 @@ JSValuePtr Interpreter::privateExecute(ExecutionFlag flag, RegisterFile* registe Additionally this loop instruction may terminate JS execution is the JS timeout is reached. */ - JSValuePtr src1 = callFrame[(++vPC)->u.operand].jsValue(callFrame); - JSValuePtr src2 = callFrame[(++vPC)->u.operand].jsValue(callFrame); - int target = (++vPC)->u.operand; + JSValue src1 = callFrame->r(vPC[1].u.operand).jsValue(); + JSValue src2 = callFrame->r(vPC[2].u.operand).jsValue(); + int target = vPC[3].u.operand; - bool result = jsLess(callFrame, src1, src2); + bool result = jsLess(callFrame, src1, src2); CHECK_FOR_EXCEPTION(); if (result) { @@ -3049,7 +4067,7 @@ JSValuePtr Interpreter::privateExecute(ExecutionFlag flag, RegisterFile* registe NEXT_INSTRUCTION(); } - ++vPC; + vPC += OPCODE_LENGTH(op_loop_if_less); NEXT_INSTRUCTION(); } DEFINE_OPCODE(op_loop_if_lesseq) { @@ -3063,11 +4081,11 @@ JSValuePtr Interpreter::privateExecute(ExecutionFlag flag, RegisterFile* registe Additionally this loop instruction may terminate JS execution is the JS timeout is reached. */ - JSValuePtr src1 = callFrame[(++vPC)->u.operand].jsValue(callFrame); - JSValuePtr src2 = callFrame[(++vPC)->u.operand].jsValue(callFrame); - int target = (++vPC)->u.operand; + JSValue src1 = callFrame->r(vPC[1].u.operand).jsValue(); + JSValue src2 = callFrame->r(vPC[2].u.operand).jsValue(); + int target = vPC[3].u.operand; - bool result = jsLessEq(callFrame, src1, src2); + bool result = jsLessEq(callFrame, src1, src2); CHECK_FOR_EXCEPTION(); if (result) { @@ -3076,75 +4094,287 @@ JSValuePtr Interpreter::privateExecute(ExecutionFlag flag, RegisterFile* registe NEXT_INSTRUCTION(); } - ++vPC; + vPC += OPCODE_LENGTH(op_loop_if_lesseq); NEXT_INSTRUCTION(); } - DEFINE_OPCODE(op_jnless) { - /* jnless src1(r) src2(r) target(offset) + DEFINE_OPCODE(op_loop_if_greater) { + /* loop_if_greater src1(r) src2(r) target(offset) - Checks whether register src1 is less than register src2, as - with the ECMAScript '<' operator, and then jumps to offset + Checks whether register src1 is greater than register src2, as + with the ECMAScript '>' operator, and then jumps to offset target from the current instruction, if and only if the - result of the comparison is false. - */ - JSValuePtr src1 = callFrame[(++vPC)->u.operand].jsValue(callFrame); - JSValuePtr src2 = callFrame[(++vPC)->u.operand].jsValue(callFrame); - int target = (++vPC)->u.operand; + result of the comparison is true. - bool result = jsLess(callFrame, src1, src2); + Additionally this loop instruction may terminate JS execution is + the JS timeout is reached. + */ + JSValue src1 = callFrame->r(vPC[1].u.operand).jsValue(); + JSValue src2 = callFrame->r(vPC[2].u.operand).jsValue(); + int target = vPC[3].u.operand; + + bool result = jsLess(callFrame, src2, src1); CHECK_FOR_EXCEPTION(); - if (!result) { + if (result) { vPC += target; + CHECK_FOR_TIMEOUT(); NEXT_INSTRUCTION(); } - - ++vPC; + + vPC += OPCODE_LENGTH(op_loop_if_greater); NEXT_INSTRUCTION(); } - DEFINE_OPCODE(op_switch_imm) { - /* switch_imm tableIndex(n) defaultOffset(offset) scrutinee(r) + DEFINE_OPCODE(op_loop_if_greatereq) { + /* loop_if_greatereq src1(r) src2(r) target(offset) - Performs a range checked switch on the scrutinee value, using - the tableIndex-th immediate switch jump table. If the scrutinee value - is an immediate number in the range covered by the referenced jump - table, and the value at jumpTable[scrutinee value] is non-zero, then - that value is used as the jump offset, otherwise defaultOffset is used. - */ - int tableIndex = (++vPC)->u.operand; - int defaultOffset = (++vPC)->u.operand; - JSValuePtr scrutinee = callFrame[(++vPC)->u.operand].jsValue(callFrame); - if (scrutinee.isInt32Fast()) - vPC += callFrame->codeBlock()->immediateSwitchJumpTable(tableIndex).offsetForValue(scrutinee.getInt32Fast(), defaultOffset); - else { - int32_t value; - if (scrutinee.numberToInt32(value)) - vPC += callFrame->codeBlock()->immediateSwitchJumpTable(tableIndex).offsetForValue(value, defaultOffset); - else - vPC += defaultOffset; + Checks whether register src1 is greater than or equal to register + src2, as with the ECMAScript '>=' operator, and then jumps to + offset target from the current instruction, if and only if the + result of the comparison is true. + + Additionally this loop instruction may terminate JS execution is + the JS timeout is reached. + */ + JSValue src1 = callFrame->r(vPC[1].u.operand).jsValue(); + JSValue src2 = callFrame->r(vPC[2].u.operand).jsValue(); + int target = vPC[3].u.operand; + + bool result = jsLessEq(callFrame, src2, src1); + CHECK_FOR_EXCEPTION(); + + if (result) { + vPC += target; + CHECK_FOR_TIMEOUT(); + NEXT_INSTRUCTION(); } + + vPC += OPCODE_LENGTH(op_loop_if_greatereq); NEXT_INSTRUCTION(); } - DEFINE_OPCODE(op_switch_char) { - /* switch_char tableIndex(n) defaultOffset(offset) scrutinee(r) + DEFINE_OPCODE(op_jless) { + /* jless src1(r) src2(r) target(offset) - Performs a range checked switch on the scrutinee value, using - the tableIndex-th character switch jump table. If the scrutinee value - is a single character string in the range covered by the referenced jump - table, and the value at jumpTable[scrutinee value] is non-zero, then - that value is used as the jump offset, otherwise defaultOffset is used. - */ - int tableIndex = (++vPC)->u.operand; - int defaultOffset = (++vPC)->u.operand; - JSValuePtr scrutinee = callFrame[(++vPC)->u.operand].jsValue(callFrame); - if (!scrutinee.isString()) + Checks whether register src1 is less than register src2, as + with the ECMAScript '<' operator, and then jumps to offset + target from the current instruction, if and only if the + result of the comparison is true. + */ + JSValue src1 = callFrame->r(vPC[1].u.operand).jsValue(); + JSValue src2 = callFrame->r(vPC[2].u.operand).jsValue(); + int target = vPC[3].u.operand; + + bool result = jsLess(callFrame, src1, src2); + CHECK_FOR_EXCEPTION(); + + if (result) { + vPC += target; + NEXT_INSTRUCTION(); + } + + vPC += OPCODE_LENGTH(op_jless); + NEXT_INSTRUCTION(); + } + DEFINE_OPCODE(op_jlesseq) { + /* jlesseq src1(r) src2(r) target(offset) + + Checks whether register src1 is less than or equal to + register src2, as with the ECMAScript '<=' operator, + and then jumps to offset target from the current instruction, + if and only if the result of the comparison is true. + */ + JSValue src1 = callFrame->r(vPC[1].u.operand).jsValue(); + JSValue src2 = callFrame->r(vPC[2].u.operand).jsValue(); + int target = vPC[3].u.operand; + + bool result = jsLessEq(callFrame, src1, src2); + CHECK_FOR_EXCEPTION(); + + if (result) { + vPC += target; + NEXT_INSTRUCTION(); + } + + vPC += OPCODE_LENGTH(op_jlesseq); + NEXT_INSTRUCTION(); + } + DEFINE_OPCODE(op_jgreater) { + /* jgreater src1(r) src2(r) target(offset) + + Checks whether register src1 is greater than register src2, as + with the ECMAScript '>' operator, and then jumps to offset + target from the current instruction, if and only if the + result of the comparison is true. + */ + JSValue src1 = callFrame->r(vPC[1].u.operand).jsValue(); + JSValue src2 = callFrame->r(vPC[2].u.operand).jsValue(); + int target = vPC[3].u.operand; + + bool result = jsLess(callFrame, src2, src1); + CHECK_FOR_EXCEPTION(); + + if (result) { + vPC += target; + NEXT_INSTRUCTION(); + } + + vPC += OPCODE_LENGTH(op_jgreater); + NEXT_INSTRUCTION(); + } + DEFINE_OPCODE(op_jgreatereq) { + /* jgreatereq src1(r) src2(r) target(offset) + + Checks whether register src1 is greater than or equal to + register src2, as with the ECMAScript '>=' operator, + and then jumps to offset target from the current instruction, + if and only if the result of the comparison is true. + */ + JSValue src1 = callFrame->r(vPC[1].u.operand).jsValue(); + JSValue src2 = callFrame->r(vPC[2].u.operand).jsValue(); + int target = vPC[3].u.operand; + + bool result = jsLessEq(callFrame, src2, src1); + CHECK_FOR_EXCEPTION(); + + if (result) { + vPC += target; + NEXT_INSTRUCTION(); + } + + vPC += OPCODE_LENGTH(op_jgreatereq); + NEXT_INSTRUCTION(); + } + DEFINE_OPCODE(op_jnless) { + /* jnless src1(r) src2(r) target(offset) + + Checks whether register src1 is less than register src2, as + with the ECMAScript '<' operator, and then jumps to offset + target from the current instruction, if and only if the + result of the comparison is false. + */ + JSValue src1 = callFrame->r(vPC[1].u.operand).jsValue(); + JSValue src2 = callFrame->r(vPC[2].u.operand).jsValue(); + int target = vPC[3].u.operand; + + bool result = jsLess(callFrame, src1, src2); + CHECK_FOR_EXCEPTION(); + + if (!result) { + vPC += target; + NEXT_INSTRUCTION(); + } + + vPC += OPCODE_LENGTH(op_jnless); + NEXT_INSTRUCTION(); + } + DEFINE_OPCODE(op_jnlesseq) { + /* jnlesseq src1(r) src2(r) target(offset) + + Checks whether register src1 is less than or equal to + register src2, as with the ECMAScript '<=' operator, + and then jumps to offset target from the current instruction, + if and only if theresult of the comparison is false. + */ + JSValue src1 = callFrame->r(vPC[1].u.operand).jsValue(); + JSValue src2 = callFrame->r(vPC[2].u.operand).jsValue(); + int target = vPC[3].u.operand; + + bool result = jsLessEq(callFrame, src1, src2); + CHECK_FOR_EXCEPTION(); + + if (!result) { + vPC += target; + NEXT_INSTRUCTION(); + } + + vPC += OPCODE_LENGTH(op_jnlesseq); + NEXT_INSTRUCTION(); + } + DEFINE_OPCODE(op_jngreater) { + /* jngreater src1(r) src2(r) target(offset) + + Checks whether register src1 is greater than register src2, as + with the ECMAScript '>' operator, and then jumps to offset + target from the current instruction, if and only if the + result of the comparison is false. + */ + JSValue src1 = callFrame->r(vPC[1].u.operand).jsValue(); + JSValue src2 = callFrame->r(vPC[2].u.operand).jsValue(); + int target = vPC[3].u.operand; + + bool result = jsLess(callFrame, src2, src1); + CHECK_FOR_EXCEPTION(); + + if (!result) { + vPC += target; + NEXT_INSTRUCTION(); + } + + vPC += OPCODE_LENGTH(op_jngreater); + NEXT_INSTRUCTION(); + } + DEFINE_OPCODE(op_jngreatereq) { + /* jngreatereq src1(r) src2(r) target(offset) + + Checks whether register src1 is greater than or equal to + register src2, as with the ECMAScript '>=' operator, + and then jumps to offset target from the current instruction, + if and only if theresult of the comparison is false. + */ + JSValue src1 = callFrame->r(vPC[1].u.operand).jsValue(); + JSValue src2 = callFrame->r(vPC[2].u.operand).jsValue(); + int target = vPC[3].u.operand; + + bool result = jsLessEq(callFrame, src2, src1); + CHECK_FOR_EXCEPTION(); + + if (!result) { + vPC += target; + NEXT_INSTRUCTION(); + } + + vPC += OPCODE_LENGTH(op_jngreatereq); + NEXT_INSTRUCTION(); + } + DEFINE_OPCODE(op_switch_imm) { + /* switch_imm tableIndex(n) defaultOffset(offset) scrutinee(r) + + Performs a range checked switch on the scrutinee value, using + the tableIndex-th immediate switch jump table. If the scrutinee value + is an immediate number in the range covered by the referenced jump + table, and the value at jumpTable[scrutinee value] is non-zero, then + that value is used as the jump offset, otherwise defaultOffset is used. + */ + int tableIndex = vPC[1].u.operand; + int defaultOffset = vPC[2].u.operand; + JSValue scrutinee = callFrame->r(vPC[3].u.operand).jsValue(); + if (scrutinee.isInt32()) + vPC += codeBlock->immediateSwitchJumpTable(tableIndex).offsetForValue(scrutinee.asInt32(), defaultOffset); + else if (scrutinee.isDouble() && scrutinee.asDouble() == static_cast(scrutinee.asDouble())) + vPC += codeBlock->immediateSwitchJumpTable(tableIndex).offsetForValue(static_cast(scrutinee.asDouble()), defaultOffset); + else + vPC += defaultOffset; + NEXT_INSTRUCTION(); + } + DEFINE_OPCODE(op_switch_char) { + /* switch_char tableIndex(n) defaultOffset(offset) scrutinee(r) + + Performs a range checked switch on the scrutinee value, using + the tableIndex-th character switch jump table. If the scrutinee value + is a single character string in the range covered by the referenced jump + table, and the value at jumpTable[scrutinee value] is non-zero, then + that value is used as the jump offset, otherwise defaultOffset is used. + */ + int tableIndex = vPC[1].u.operand; + int defaultOffset = vPC[2].u.operand; + JSValue scrutinee = callFrame->r(vPC[3].u.operand).jsValue(); + if (!scrutinee.isString()) vPC += defaultOffset; else { - UString::Rep* value = asString(scrutinee)->value().rep(); - if (value->size() != 1) + StringImpl* value = asString(scrutinee)->value(callFrame).impl(); + if (value->length() != 1) vPC += defaultOffset; else - vPC += callFrame->codeBlock()->characterSwitchJumpTable(tableIndex).offsetForValue(value->data()[0], defaultOffset); + vPC += codeBlock->characterSwitchJumpTable(tableIndex).offsetForValue((*value)[0], defaultOffset); } NEXT_INSTRUCTION(); } @@ -3157,13 +4387,13 @@ JSValuePtr Interpreter::privateExecute(ExecutionFlag flag, RegisterFile* registe jump table, then the value associated with the string is used as the jump offset, otherwise defaultOffset is used. */ - int tableIndex = (++vPC)->u.operand; - int defaultOffset = (++vPC)->u.operand; - JSValuePtr scrutinee = callFrame[(++vPC)->u.operand].jsValue(callFrame); + int tableIndex = vPC[1].u.operand; + int defaultOffset = vPC[2].u.operand; + JSValue scrutinee = callFrame->r(vPC[3].u.operand).jsValue(); if (!scrutinee.isString()) vPC += defaultOffset; else - vPC += callFrame->codeBlock()->stringSwitchJumpTable(tableIndex).offsetForValue(asString(scrutinee)->value().rep(), defaultOffset); + vPC += codeBlock->stringSwitchJumpTable(tableIndex).offsetForValue(asString(scrutinee)->value(callFrame).impl(), defaultOffset); NEXT_INSTRUCTION(); } DEFINE_OPCODE(op_new_func) { @@ -3174,12 +4404,14 @@ JSValuePtr Interpreter::privateExecute(ExecutionFlag flag, RegisterFile* registe constructor, using the rules for function declarations, and puts the result in register dst. */ - int dst = (++vPC)->u.operand; - int func = (++vPC)->u.operand; - - callFrame[dst] = callFrame->codeBlock()->function(func)->makeFunction(callFrame, callFrame->scopeChain()); + int dst = vPC[1].u.operand; + int func = vPC[2].u.operand; + int shouldCheck = vPC[3].u.operand; + ASSERT(codeBlock->codeType() != FunctionCode || !codeBlock->needsFullScopeChain() || callFrame->r(codeBlock->activationRegister()).jsValue()); + if (!shouldCheck || !callFrame->r(dst).jsValue()) + callFrame->uncheckedR(dst) = JSValue(codeBlock->functionDecl(func)->make(callFrame, callFrame->scopeChain())); - ++vPC; + vPC += OPCODE_LENGTH(op_new_func); NEXT_INSTRUCTION(); } DEFINE_OPCODE(op_new_func_exp) { @@ -3190,16 +4422,32 @@ JSValuePtr Interpreter::privateExecute(ExecutionFlag flag, RegisterFile* registe constructor, using the rules for function expressions, and puts the result in register dst. */ - int dst = (++vPC)->u.operand; - int func = (++vPC)->u.operand; + int dst = vPC[1].u.operand; + int funcIndex = vPC[2].u.operand; + + ASSERT(codeBlock->codeType() != FunctionCode || !codeBlock->needsFullScopeChain() || callFrame->r(codeBlock->activationRegister()).jsValue()); + FunctionExecutable* function = codeBlock->functionExpr(funcIndex); + JSFunction* func = function->make(callFrame, callFrame->scopeChain()); + + /* + The Identifier in a FunctionExpression can be referenced from inside + the FunctionExpression's FunctionBody to allow the function to call + itself recursively. However, unlike in a FunctionDeclaration, the + Identifier in a FunctionExpression cannot be referenced from and + does not affect the scope enclosing the FunctionExpression. + */ + if (!function->name().isNull()) { + JSStaticScopeObject* functionScopeObject = JSStaticScopeObject::create(callFrame, function->name(), func, ReadOnly | DontDelete); + func->setScope(*globalData, func->scope()->push(functionScopeObject)); + } - callFrame[dst] = callFrame->codeBlock()->functionExpression(func)->makeFunction(callFrame, callFrame->scopeChain()); + callFrame->uncheckedR(dst) = JSValue(func); - ++vPC; + vPC += OPCODE_LENGTH(op_new_func_exp); NEXT_INSTRUCTION(); } DEFINE_OPCODE(op_call_eval) { - /* call_eval dst(r) func(r) argCount(n) registerOffset(n) + /* call_eval func(r) argCount(n) registerOffset(n) Call a function named "eval" with no explicit "this" value (which may therefore be the eval operator). If register @@ -3210,25 +4458,23 @@ JSValuePtr Interpreter::privateExecute(ExecutionFlag flag, RegisterFile* registe opcode). Otherwise, act exactly as the "call" opcode would. */ - int dst = vPC[1].u.operand; - int func = vPC[2].u.operand; - int argCount = vPC[3].u.operand; - int registerOffset = vPC[4].u.operand; - - JSValuePtr funcVal = callFrame[func].jsValue(callFrame); + int func = vPC[1].u.operand; + int argCount = vPC[2].u.operand; + int registerOffset = vPC[3].u.operand; + + ASSERT(codeBlock->codeType() != FunctionCode || !codeBlock->needsFullScopeChain() || callFrame->r(codeBlock->activationRegister()).jsValue()); + JSValue funcVal = callFrame->r(func).jsValue(); - Register* newCallFrame = callFrame->registers() + registerOffset; - Register* argv = newCallFrame - RegisterFile::CallFrameHeaderSize - argCount; - JSValuePtr thisValue = argv[0].jsValue(callFrame); - JSGlobalObject* globalObject = callFrame->scopeChain()->globalObject(); + if (isHostFunction(funcVal, globalFuncEval)) { + CallFrame* newCallFrame = CallFrame::create(callFrame->registers() + registerOffset); + newCallFrame->init(0, vPC + OPCODE_LENGTH(op_call_eval), callFrame->scopeChain(), callFrame, argCount, jsCast(funcVal)); - if (thisValue == globalObject && funcVal == globalObject->evalFunction()) { - JSValuePtr result = callEval(callFrame, registerFile, argv, argCount, registerOffset, exceptionValue); - if (exceptionValue) + JSValue result = eval(newCallFrame); + if ((exceptionValue = globalData->exception)) goto vm_throw; - callFrame[dst] = result; + functionReturnValue = result; - vPC += 5; + vPC += OPCODE_LENGTH(op_call_eval); NEXT_INSTRUCTION(); } @@ -3237,7 +4483,7 @@ JSValuePtr Interpreter::privateExecute(ExecutionFlag flag, RegisterFile* registe // fall through to op_call } DEFINE_OPCODE(op_call) { - /* call dst(r) func(r) argCount(n) registerOffset(n) + /* call func(r) argCount(n) registerOffset(n) Perform a function call. @@ -3247,23 +4493,26 @@ JSValuePtr Interpreter::privateExecute(ExecutionFlag flag, RegisterFile* registe dst is where op_ret should store its result. */ - int dst = vPC[1].u.operand; - int func = vPC[2].u.operand; - int argCount = vPC[3].u.operand; - int registerOffset = vPC[4].u.operand; + int func = vPC[1].u.operand; + int argCount = vPC[2].u.operand; + int registerOffset = vPC[3].u.operand; - JSValuePtr v = callFrame[func].jsValue(callFrame); + JSValue v = callFrame->r(func).jsValue(); CallData callData; - CallType callType = v.getCallData(callData); + CallType callType = getCallData(v, callData); if (callType == CallTypeJS) { ScopeChainNode* callDataScopeChain = callData.js.scopeChain; - FunctionBodyNode* functionBodyNode = callData.js.functionBody; - CodeBlock* newCodeBlock = &functionBodyNode->bytecode(callDataScopeChain); - CallFrame* previousCallFrame = callFrame; + JSObject* error = callData.js.functionExecutable->compileForCall(callFrame, callDataScopeChain); + if (UNLIKELY(!!error)) { + exceptionValue = error; + goto vm_throw; + } + CallFrame* previousCallFrame = callFrame; + CodeBlock* newCodeBlock = &callData.js.functionExecutable->generatedBytecodeForCall(); callFrame = slideRegisterWindowForCall(newCodeBlock, registerFile, callFrame, registerOffset, argCount); if (UNLIKELY(!callFrame)) { callFrame = previousCallFrame; @@ -3271,7 +4520,10 @@ JSValuePtr Interpreter::privateExecute(ExecutionFlag flag, RegisterFile* registe goto vm_throw; } - callFrame->init(newCodeBlock, vPC + 5, callDataScopeChain, previousCallFrame, dst, argCount, asFunction(v)); + callFrame->init(newCodeBlock, vPC + OPCODE_LENGTH(op_call), callDataScopeChain, previousCallFrame, argCount, jsCast(v)); + codeBlock = newCodeBlock; + ASSERT(codeBlock == callFrame->codeBlock()); + *topCallFrameSlot = callFrame; vPC = newCodeBlock->instructions().begin(); #if ENABLE(OPCODE_STATS) @@ -3284,76 +4536,195 @@ JSValuePtr Interpreter::privateExecute(ExecutionFlag flag, RegisterFile* registe if (callType == CallTypeHost) { ScopeChainNode* scopeChain = callFrame->scopeChain(); CallFrame* newCallFrame = CallFrame::create(callFrame->registers() + registerOffset); - newCallFrame->init(0, vPC + 5, scopeChain, callFrame, dst, argCount, 0); - - Register* thisRegister = newCallFrame->registers() - RegisterFile::CallFrameHeaderSize - argCount; - ArgList args(thisRegister + 1, argCount - 1); - - // FIXME: All host methods should be calling toThisObject, but this is not presently the case. - JSValuePtr thisValue = thisRegister->jsValue(callFrame); - if (thisValue == jsNull()) - thisValue = callFrame->globalThisValue(); - - JSValuePtr returnValue; + newCallFrame->init(0, vPC + OPCODE_LENGTH(op_call), scopeChain, callFrame, argCount, asObject(v)); + JSValue returnValue; { - SamplingTool::HostCallRecord callRecord(m_sampler); - returnValue = callData.native.function(newCallFrame, asObject(v), thisValue, args); + *topCallFrameSlot = newCallFrame; + SamplingTool::HostCallRecord callRecord(m_sampler.get()); + returnValue = JSValue::decode(callData.native.function(newCallFrame)); + *topCallFrameSlot = callFrame; } CHECK_FOR_EXCEPTION(); - callFrame[dst] = JSValuePtr(returnValue); + functionReturnValue = returnValue; - vPC += 5; + vPC += OPCODE_LENGTH(op_call); NEXT_INSTRUCTION(); } ASSERT(callType == CallTypeNone); - exceptionValue = createNotAFunctionError(callFrame, v, vPC - callFrame->codeBlock()->instructions().begin(), callFrame->codeBlock()); + exceptionValue = createNotAFunctionError(callFrame, v); + goto vm_throw; + } + DEFINE_OPCODE(op_call_varargs) { + /* call_varargs callee(r) thisValue(r) arguments(r) firstFreeRegister(n) + + Perform a function call with a dynamic set of arguments. + + registerOffset is the distance the callFrame pointer should move + before the VM initializes the new call frame's header, excluding + space for arguments. + + dst is where op_ret should store its result. + */ + + JSValue v = callFrame->r(vPC[1].u.operand).jsValue(); + JSValue thisValue = callFrame->r(vPC[2].u.operand).jsValue(); + JSValue arguments = callFrame->r(vPC[3].u.operand).jsValue(); + int firstFreeRegister = vPC[4].u.operand; + + CallFrame* newCallFrame = loadVarargs(callFrame, registerFile, thisValue, arguments, firstFreeRegister); + if ((exceptionValue = globalData->exception)) + goto vm_throw; + int argCount = newCallFrame->argumentCountIncludingThis(); + + CallData callData; + CallType callType = getCallData(v, callData); + + if (callType == CallTypeJS) { + ScopeChainNode* callDataScopeChain = callData.js.scopeChain; + + JSObject* error = callData.js.functionExecutable->compileForCall(callFrame, callDataScopeChain); + if (UNLIKELY(!!error)) { + exceptionValue = error; + goto vm_throw; + } + + CodeBlock* newCodeBlock = &callData.js.functionExecutable->generatedBytecodeForCall(); + newCallFrame = slideRegisterWindowForCall(newCodeBlock, registerFile, newCallFrame, 0, argCount); + if (UNLIKELY(!newCallFrame)) { + exceptionValue = createStackOverflowError(callFrame); + goto vm_throw; + } + + newCallFrame->init(newCodeBlock, vPC + OPCODE_LENGTH(op_call_varargs), callDataScopeChain, callFrame, argCount, jsCast(v)); + codeBlock = newCodeBlock; + callFrame = newCallFrame; + ASSERT(codeBlock == callFrame->codeBlock()); + *topCallFrameSlot = callFrame; + vPC = newCodeBlock->instructions().begin(); + +#if ENABLE(OPCODE_STATS) + OpcodeStats::resetLastInstruction(); +#endif + + NEXT_INSTRUCTION(); + } + + if (callType == CallTypeHost) { + ScopeChainNode* scopeChain = callFrame->scopeChain(); + newCallFrame->init(0, vPC + OPCODE_LENGTH(op_call_varargs), scopeChain, callFrame, argCount, asObject(v)); + + JSValue returnValue; + { + *topCallFrameSlot = newCallFrame; + SamplingTool::HostCallRecord callRecord(m_sampler.get()); + returnValue = JSValue::decode(callData.native.function(newCallFrame)); + *topCallFrameSlot = callFrame; + } + CHECK_FOR_EXCEPTION(); + + functionReturnValue = returnValue; + + vPC += OPCODE_LENGTH(op_call_varargs); + NEXT_INSTRUCTION(); + } + + ASSERT(callType == CallTypeNone); + + exceptionValue = createNotAFunctionError(callFrame, v); goto vm_throw; } DEFINE_OPCODE(op_tear_off_activation) { - /* tear_off_activation activation(r) + /* tear_off_activation activation(r) arguments(r) - Copy all locals and parameters to new memory allocated on - the heap, and make the passed activation use this memory - in the future when looking up entries in the symbol table. - If there is an 'arguments' object, then it will also use - this memory for storing the named parameters, but not any - extra arguments. + Copy locals and named parameters from the register file to the heap. + Point the bindings in 'activation' and 'arguments' to this new backing + store. (Note that 'arguments' may not have been created. If created, + 'arguments' already holds a copy of any extra / unnamed parameters.) - This opcode should only be used immediately before op_ret. + This opcode appears before op_ret in functions that require full scope chains. */ - int src = (++vPC)->u.operand; - ASSERT(callFrame->codeBlock()->needsFullScopeChain()); - - asActivation(callFrame[src].getJSValue())->copyRegisters(callFrame->optionalCalleeArguments()); + int activation = vPC[1].u.operand; + int arguments = vPC[2].u.operand; + ASSERT(codeBlock->needsFullScopeChain()); + JSValue activationValue = callFrame->r(activation).jsValue(); + if (activationValue) { + asActivation(activationValue)->tearOff(*globalData); + + if (JSValue argumentsValue = callFrame->r(unmodifiedArgumentsRegister(arguments)).jsValue()) + asArguments(argumentsValue)->didTearOffActivation(*globalData, asActivation(activationValue)); + } else if (JSValue argumentsValue = callFrame->r(unmodifiedArgumentsRegister(arguments)).jsValue()) { + if (!codeBlock->isStrictMode()) + asArguments(argumentsValue)->tearOff(callFrame); + } - ++vPC; + vPC += OPCODE_LENGTH(op_tear_off_activation); NEXT_INSTRUCTION(); } DEFINE_OPCODE(op_tear_off_arguments) { - /* tear_off_arguments + /* tear_off_arguments arguments(r) - Copy all arguments to new memory allocated on the heap, - and make the 'arguments' object use this memory in the - future when looking up named parameters, but not any - extra arguments. If an activation object exists for the - current function context, then the tear_off_activation - opcode should be used instead. + Copy named parameters from the register file to the heap. Point the + bindings in 'arguments' to this new backing store. (Note that + 'arguments' may not have been created. If created, 'arguments' already + holds a copy of any extra / unnamed parameters.) - This opcode should only be used immediately before op_ret. + This opcode appears before op_ret in functions that don't require full + scope chains, but do use 'arguments'. */ - ASSERT(callFrame->codeBlock()->usesArguments() && !callFrame->codeBlock()->needsFullScopeChain()); + int src1 = vPC[1].u.operand; + ASSERT(!codeBlock->needsFullScopeChain() && codeBlock->ownerExecutable()->usesArguments()); - callFrame->optionalCalleeArguments()->copyRegisters(); + if (JSValue arguments = callFrame->r(unmodifiedArgumentsRegister(src1)).jsValue()) + asArguments(arguments)->tearOff(callFrame); - ++vPC; + vPC += OPCODE_LENGTH(op_tear_off_arguments); NEXT_INSTRUCTION(); } DEFINE_OPCODE(op_ret) { + /* ret result(r) + + Return register result as the return value of the current + function call, writing it into functionReturnValue. + In addition, unwind one call frame and restore the scope + chain, code block instruction pointer and register base + to those of the calling function. + */ + + int result = vPC[1].u.operand; + + JSValue returnValue = callFrame->r(result).jsValue(); + + vPC = callFrame->returnVPC(); + callFrame = callFrame->callerFrame(); + + if (callFrame->hasHostCallFrameFlag()) + return returnValue; + + *topCallFrameSlot = callFrame; + functionReturnValue = returnValue; + codeBlock = callFrame->codeBlock(); + ASSERT(codeBlock == callFrame->codeBlock()); + + NEXT_INSTRUCTION(); + } + DEFINE_OPCODE(op_call_put_result) { + /* op_call_put_result result(r) + + Move call result from functionReturnValue to caller's + expected return value register. + */ + + callFrame->uncheckedR(vPC[1].u.operand) = functionReturnValue; + + vPC += OPCODE_LENGTH(op_call_put_result); + NEXT_INSTRUCTION(); + } + DEFINE_OPCODE(op_ret_object_or_this) { /* ret result(r) Return register result as the return value of the current @@ -3363,75 +4734,96 @@ JSValuePtr Interpreter::privateExecute(ExecutionFlag flag, RegisterFile* registe register base to those of the calling function. */ - int result = (++vPC)->u.operand; + int result = vPC[1].u.operand; - if (callFrame->codeBlock()->needsFullScopeChain()) - callFrame->scopeChain()->deref(); + JSValue returnValue = callFrame->r(result).jsValue(); - JSValuePtr returnValue = callFrame[result].jsValue(callFrame); + if (UNLIKELY(!returnValue.isObject())) + returnValue = callFrame->r(vPC[2].u.operand).jsValue(); - vPC = callFrame->returnPC(); - int dst = callFrame->returnValueRegister(); + vPC = callFrame->returnVPC(); callFrame = callFrame->callerFrame(); - + if (callFrame->hasHostCallFrameFlag()) return returnValue; - callFrame[dst] = JSValuePtr(returnValue); + *topCallFrameSlot = callFrame; + functionReturnValue = returnValue; + codeBlock = callFrame->codeBlock(); + ASSERT(codeBlock == callFrame->codeBlock()); NEXT_INSTRUCTION(); } DEFINE_OPCODE(op_enter) { /* enter - Initializes local variables to undefined and fills constant - registers with their values. If the code block requires an - activation, enter_with_activation should be used instead. + Initializes local variables to undefined. If the code block requires + an activation, enter_with_activation is used instead. - This opcode should only be used at the beginning of a code - block. + This opcode appears only at the beginning of a code block. */ size_t i = 0; - CodeBlock* codeBlock = callFrame->codeBlock(); - for (size_t count = codeBlock->m_numVars; i < count; ++i) - callFrame[i] = jsUndefined(); + callFrame->uncheckedR(i) = jsUndefined(); + + vPC += OPCODE_LENGTH(op_enter); + NEXT_INSTRUCTION(); + } + DEFINE_OPCODE(op_create_activation) { + /* create_activation dst(r) + + If the activation object for this callframe has not yet been created, + this creates it and writes it back to dst. + */ + + int activationReg = vPC[1].u.operand; + if (!callFrame->r(activationReg).jsValue()) { + JSActivation* activation = JSActivation::create(*globalData, callFrame, static_cast(codeBlock->ownerExecutable())); + callFrame->r(activationReg) = JSValue(activation); + callFrame->setScopeChain(callFrame->scopeChain()->push(activation)); + } + vPC += OPCODE_LENGTH(op_create_activation); + NEXT_INSTRUCTION(); + } + DEFINE_OPCODE(op_get_callee) { + /* op_get_callee callee(r) + + Move callee into a register. + */ - for (size_t count = codeBlock->numberOfConstantRegisters(), j = 0; j < count; ++i, ++j) - callFrame[i] = codeBlock->constantRegister(j); + callFrame->uncheckedR(vPC[1].u.operand) = JSValue(callFrame->callee()); - ++vPC; + vPC += OPCODE_LENGTH(op_get_callee); NEXT_INSTRUCTION(); } - DEFINE_OPCODE(op_enter_with_activation) { - /* enter_with_activation dst(r) + DEFINE_OPCODE(op_create_this) { + /* op_create_this this(r) proto(r) - Initializes local variables to undefined, fills constant - registers with their values, creates an activation object, - and places the new activation both in dst and at the top - of the scope chain. If the code block does not require an - activation, enter should be used instead. + Allocate an object as 'this', fr use in construction. This opcode should only be used at the beginning of a code block. */ - size_t i = 0; - CodeBlock* codeBlock = callFrame->codeBlock(); - - for (size_t count = codeBlock->m_numVars; i < count; ++i) - callFrame[i] = jsUndefined(); + int thisRegister = vPC[1].u.operand; + int protoRegister = vPC[2].u.operand; - for (size_t count = codeBlock->numberOfConstantRegisters(), j = 0; j < count; ++i, ++j) - callFrame[i] = codeBlock->constantRegister(j); + JSFunction* constructor = jsCast(callFrame->callee()); +#if !ASSERT_DISABLED + ConstructData constructData; + ASSERT(constructor->methodTable()->getConstructData(constructor, constructData) == ConstructTypeJS); +#endif - int dst = (++vPC)->u.operand; - JSActivation* activation = new (globalData) JSActivation(callFrame, static_cast(codeBlock->ownerNode())); - callFrame[dst] = activation; - callFrame->setScopeChain(callFrame->scopeChain()->copy()->push(activation)); + Structure* structure; + JSValue proto = callFrame->r(protoRegister).jsValue(); + if (proto.isObject()) + structure = asObject(proto)->inheritorID(callFrame->globalData()); + else + structure = constructor->scope()->globalObject->emptyObjectStructure(); + callFrame->uncheckedR(thisRegister) = constructEmptyObject(callFrame, structure); - ++vPC; + vPC += OPCODE_LENGTH(op_create_this); NEXT_INSTRUCTION(); } DEFINE_OPCODE(op_convert_this) { @@ -3446,34 +4838,47 @@ JSValuePtr Interpreter::privateExecute(ExecutionFlag flag, RegisterFile* registe block. */ - int thisRegister = (++vPC)->u.operand; - JSValuePtr thisVal = callFrame[thisRegister].getJSValue(); - if (thisVal.needsThisConversion()) - callFrame[thisRegister] = JSValuePtr(thisVal.toThisObject(callFrame)); + int thisRegister = vPC[1].u.operand; + JSValue thisVal = callFrame->r(thisRegister).jsValue(); + if (thisVal.isPrimitive()) + callFrame->uncheckedR(thisRegister) = JSValue(thisVal.toThisObject(callFrame)); - ++vPC; + vPC += OPCODE_LENGTH(op_convert_this); NEXT_INSTRUCTION(); } - DEFINE_OPCODE(op_create_arguments) { - /* create_arguments + DEFINE_OPCODE(op_init_lazy_reg) { + /* init_lazy_reg dst(r) - Creates the 'arguments' object and places it in both the - 'arguments' call frame slot and the local 'arguments' - register. + Initialises dst(r) to JSValue(). - This opcode should only be used at the beginning of a code - block. - */ + This opcode appears only at the beginning of a code block. + */ + int dst = vPC[1].u.operand; - Arguments* arguments = new (globalData) Arguments(callFrame); - callFrame->setCalleeArguments(arguments); - callFrame[RegisterFile::ArgumentsRegister] = arguments; - - ++vPC; + callFrame->uncheckedR(dst) = JSValue(); + vPC += OPCODE_LENGTH(op_init_lazy_reg); + NEXT_INSTRUCTION(); + } + DEFINE_OPCODE(op_create_arguments) { + /* create_arguments dst(r) + + Creates the 'arguments' object and places it in both the + 'arguments' call frame slot and the local 'arguments' + register, if it has not already been initialised. + */ + + int dst = vPC[1].u.operand; + + if (!callFrame->r(dst).jsValue()) { + Arguments* arguments = Arguments::create(*globalData, callFrame); + callFrame->uncheckedR(dst) = JSValue(arguments); + callFrame->uncheckedR(unmodifiedArgumentsRegister(dst)) = JSValue(arguments); + } + vPC += OPCODE_LENGTH(op_create_arguments); NEXT_INSTRUCTION(); } DEFINE_OPCODE(op_construct) { - /* construct dst(r) func(r) argCount(n) registerOffset(n) proto(r) thisRegister(r) + /* construct func(r) argCount(n) registerOffset(n) proto(r) thisRegister(r) Invoke register "func" as a constructor. For JS functions, the calling convention is exactly as for the @@ -3487,35 +4892,26 @@ JSValuePtr Interpreter::privateExecute(ExecutionFlag flag, RegisterFile* registe caching of this lookup. */ - int dst = vPC[1].u.operand; - int func = vPC[2].u.operand; - int argCount = vPC[3].u.operand; - int registerOffset = vPC[4].u.operand; - int proto = vPC[5].u.operand; - int thisRegister = vPC[6].u.operand; + int func = vPC[1].u.operand; + int argCount = vPC[2].u.operand; + int registerOffset = vPC[3].u.operand; - JSValuePtr v = callFrame[func].jsValue(callFrame); + JSValue v = callFrame->r(func).jsValue(); ConstructData constructData; - ConstructType constructType = v.getConstructData(constructData); + ConstructType constructType = getConstructData(v, constructData); if (constructType == ConstructTypeJS) { ScopeChainNode* callDataScopeChain = constructData.js.scopeChain; - FunctionBodyNode* functionBodyNode = constructData.js.functionBody; - CodeBlock* newCodeBlock = &functionBodyNode->bytecode(callDataScopeChain); - - Structure* structure; - JSValuePtr prototype = callFrame[proto].jsValue(callFrame); - if (prototype.isObject()) - structure = asObject(prototype)->inheritorID(); - else - structure = callDataScopeChain->globalObject()->emptyObjectStructure(); - JSObject* newObject = new (globalData) JSObject(structure); - callFrame[thisRegister] = JSValuePtr(newObject); // "this" value + JSObject* error = constructData.js.functionExecutable->compileForConstruct(callFrame, callDataScopeChain); + if (UNLIKELY(!!error)) { + exceptionValue = error; + goto vm_throw; + } CallFrame* previousCallFrame = callFrame; - + CodeBlock* newCodeBlock = &constructData.js.functionExecutable->generatedBytecodeForConstruct(); callFrame = slideRegisterWindowForCall(newCodeBlock, registerFile, callFrame, registerOffset, argCount); if (UNLIKELY(!callFrame)) { callFrame = previousCallFrame; @@ -3523,9 +4919,10 @@ JSValuePtr Interpreter::privateExecute(ExecutionFlag flag, RegisterFile* registe goto vm_throw; } - callFrame->init(newCodeBlock, vPC + 7, callDataScopeChain, previousCallFrame, dst, argCount, asFunction(v)); + callFrame->init(newCodeBlock, vPC + OPCODE_LENGTH(op_construct), callDataScopeChain, previousCallFrame, argCount, jsCast(v)); + codeBlock = newCodeBlock; + *topCallFrameSlot = callFrame; vPC = newCodeBlock->instructions().begin(); - #if ENABLE(OPCODE_STATS) OpcodeStats::resetLastInstruction(); #endif @@ -3534,46 +4931,55 @@ JSValuePtr Interpreter::privateExecute(ExecutionFlag flag, RegisterFile* registe } if (constructType == ConstructTypeHost) { - ArgList args(callFrame->registers() + thisRegister + 1, argCount - 1); - ScopeChainNode* scopeChain = callFrame->scopeChain(); CallFrame* newCallFrame = CallFrame::create(callFrame->registers() + registerOffset); - newCallFrame->init(0, vPC + 7, scopeChain, callFrame, dst, argCount, 0); + newCallFrame->init(0, vPC + OPCODE_LENGTH(op_construct), scopeChain, callFrame, argCount, asObject(v)); - JSValuePtr returnValue; + JSValue returnValue; { - SamplingTool::HostCallRecord callRecord(m_sampler); - returnValue = constructData.native.function(newCallFrame, asObject(v), args); + *topCallFrameSlot = newCallFrame; + SamplingTool::HostCallRecord callRecord(m_sampler.get()); + returnValue = JSValue::decode(constructData.native.function(newCallFrame)); + *topCallFrameSlot = callFrame; } CHECK_FOR_EXCEPTION(); - callFrame[dst] = JSValuePtr(returnValue); + functionReturnValue = returnValue; - vPC += 7; + vPC += OPCODE_LENGTH(op_construct); NEXT_INSTRUCTION(); } ASSERT(constructType == ConstructTypeNone); - exceptionValue = createNotAConstructorError(callFrame, v, vPC - callFrame->codeBlock()->instructions().begin(), callFrame->codeBlock()); + exceptionValue = createNotAConstructorError(callFrame, v); goto vm_throw; } - DEFINE_OPCODE(op_construct_verify) { - /* construct_verify dst(r) override(r) + DEFINE_OPCODE(op_strcat) { + /* strcat dst(r) src(r) count(n) - Verifies that register dst holds an object. If not, moves - the object in register override to register dst. + Construct a new String instance using the original + constructor, and puts the result in register dst. + The string will be the result of concatenating count + strings with values taken from registers starting at + register src. */ + int dst = vPC[1].u.operand; + int src = vPC[2].u.operand; + int count = vPC[3].u.operand; - int dst = vPC[1].u.operand;; - if (LIKELY(callFrame[dst].jsValue(callFrame).isObject())) { - vPC += 3; - NEXT_INSTRUCTION(); - } + callFrame->uncheckedR(dst) = concatenateStrings(callFrame, &callFrame->registers()[src], count); + CHECK_FOR_EXCEPTION(); + vPC += OPCODE_LENGTH(op_strcat); + + NEXT_INSTRUCTION(); + } + DEFINE_OPCODE(op_to_primitive) { + int dst = vPC[1].u.operand; + int src = vPC[2].u.operand; - int override = vPC[2].u.operand; - callFrame[dst] = callFrame[override]; + callFrame->uncheckedR(dst) = callFrame->r(src).jsValue().toPrimitive(callFrame); + vPC += OPCODE_LENGTH(op_to_primitive); - vPC += 3; NEXT_INSTRUCTION(); } DEFINE_OPCODE(op_push_scope) { @@ -3583,15 +4989,15 @@ JSValuePtr Interpreter::privateExecute(ExecutionFlag flag, RegisterFile* registe of the current scope chain. The contents of the register scope are replaced by the result of toObject conversion of the scope. */ - int scope = (++vPC)->u.operand; - JSValuePtr v = callFrame[scope].jsValue(callFrame); + int scope = vPC[1].u.operand; + JSValue v = callFrame->r(scope).jsValue(); JSObject* o = v.toObject(callFrame); CHECK_FOR_EXCEPTION(); - callFrame[scope] = JSValuePtr(o); + callFrame->uncheckedR(scope) = JSValue(o); callFrame->setScopeChain(callFrame->scopeChain()->push(o)); - ++vPC; + vPC += OPCODE_LENGTH(op_push_scope); NEXT_INSTRUCTION(); } DEFINE_OPCODE(op_pop_scope) { @@ -3601,47 +5007,70 @@ JSValuePtr Interpreter::privateExecute(ExecutionFlag flag, RegisterFile* registe */ callFrame->setScopeChain(callFrame->scopeChain()->pop()); - ++vPC; + vPC += OPCODE_LENGTH(op_pop_scope); NEXT_INSTRUCTION(); } DEFINE_OPCODE(op_get_pnames) { - /* get_pnames dst(r) base(r) + /* get_pnames dst(r) base(r) i(n) size(n) breakTarget(offset) Creates a property name list for register base and puts it - in register dst. This is not a true JavaScript value, just - a synthetic value used to keep the iteration state in a - register. + in register dst, initializing i and size for iteration. If + base is undefined or null, jumps to breakTarget. */ - int dst = (++vPC)->u.operand; - int base = (++vPC)->u.operand; + int dst = vPC[1].u.operand; + int base = vPC[2].u.operand; + int i = vPC[3].u.operand; + int size = vPC[4].u.operand; + int breakTarget = vPC[5].u.operand; - callFrame[dst] = JSPropertyNameIterator::create(callFrame, callFrame[base].jsValue(callFrame)); - ++vPC; + JSValue v = callFrame->r(base).jsValue(); + if (v.isUndefinedOrNull()) { + vPC += breakTarget; + NEXT_INSTRUCTION(); + } + + JSObject* o = v.toObject(callFrame); + Structure* structure = o->structure(); + JSPropertyNameIterator* jsPropertyNameIterator = structure->enumerationCache(); + if (!jsPropertyNameIterator || jsPropertyNameIterator->cachedPrototypeChain() != structure->prototypeChain(callFrame)) + jsPropertyNameIterator = JSPropertyNameIterator::create(callFrame, o); + + callFrame->uncheckedR(dst) = jsPropertyNameIterator; + callFrame->uncheckedR(base) = JSValue(o); + callFrame->uncheckedR(i) = Register::withInt(0); + callFrame->uncheckedR(size) = Register::withInt(jsPropertyNameIterator->size()); + vPC += OPCODE_LENGTH(op_get_pnames); NEXT_INSTRUCTION(); } DEFINE_OPCODE(op_next_pname) { - /* next_pname dst(r) iter(r) target(offset) + /* next_pname dst(r) base(r) i(n) size(n) iter(r) target(offset) - Tries to copies the next name from property name list in - register iter. If there are names left, then copies one to - register dst, and jumps to offset target. If there are none - left, invalidates the iterator and continues to the next + Copies the next name from the property name list in + register iter to dst, then jumps to offset target. If there are no + names left, invalidates the iterator and continues to the next instruction. */ - int dst = (++vPC)->u.operand; - int iter = (++vPC)->u.operand; - int target = (++vPC)->u.operand; - - JSPropertyNameIterator* it = callFrame[iter].propertyNameIterator(); - if (JSValuePtr temp = it->next(callFrame)) { - CHECK_FOR_TIMEOUT(); - callFrame[dst] = JSValuePtr(temp); - vPC += target; - NEXT_INSTRUCTION(); + int dst = vPC[1].u.operand; + int base = vPC[2].u.operand; + int i = vPC[3].u.operand; + int size = vPC[4].u.operand; + int iter = vPC[5].u.operand; + int target = vPC[6].u.operand; + + JSPropertyNameIterator* it = callFrame->r(iter).propertyNameIterator(); + while (callFrame->r(i).i() != callFrame->r(size).i()) { + JSValue key = it->get(callFrame, asObject(callFrame->r(base).jsValue()), callFrame->r(i).i()); + CHECK_FOR_EXCEPTION(); + callFrame->uncheckedR(i) = Register::withInt(callFrame->r(i).i() + 1); + if (key) { + CHECK_FOR_TIMEOUT(); + callFrame->uncheckedR(dst) = key; + vPC += target; + NEXT_INSTRUCTION(); + } } - it->invalidate(); - ++vPC; + vPC += OPCODE_LENGTH(op_next_pname); NEXT_INSTRUCTION(); } DEFINE_OPCODE(op_jmp_scopes) { @@ -3651,8 +5080,8 @@ JSValuePtr Interpreter::privateExecute(ExecutionFlag flag, RegisterFile* registe specified by immediate number count, then jumps to offset target. */ - int count = (++vPC)->u.operand; - int target = (++vPC)->u.operand; + int count = vPC[1].u.operand; + int target = vPC[2].u.operand; ScopeChainNode* tmp = callFrame->scopeChain(); while (count--) @@ -3662,7 +5091,7 @@ JSValuePtr Interpreter::privateExecute(ExecutionFlag flag, RegisterFile* registe vPC += target; NEXT_INSTRUCTION(); } -#if HAVE(COMPUTED_GOTO) +#if ENABLE(COMPUTED_GOTO_CLASSIC_INTERPRETER) // Appease GCC goto *(&&skip_new_scope); #endif @@ -3675,26 +5104,26 @@ JSValuePtr Interpreter::privateExecute(ExecutionFlag flag, RegisterFile* registe */ callFrame->setScopeChain(createExceptionScope(callFrame, vPC)); - vPC += 4; + vPC += OPCODE_LENGTH(op_push_new_scope); NEXT_INSTRUCTION(); } -#if HAVE(COMPUTED_GOTO) +#if ENABLE(COMPUTED_GOTO_CLASSIC_INTERPRETER) skip_new_scope: #endif DEFINE_OPCODE(op_catch) { /* catch ex(r) - Retrieves the VMs current exception and puts it in register + Retrieves the VM's current exception and puts it in register ex. This is only valid after an exception has been raised, and usually forms the beginning of an exception handler. */ ASSERT(exceptionValue); ASSERT(!globalData->exception); - int ex = (++vPC)->u.operand; - callFrame[ex] = exceptionValue; - exceptionValue = noValue(); + int ex = vPC[1].u.operand; + callFrame->uncheckedR(ex) = exceptionValue; + exceptionValue = JSValue(); - ++vPC; + vPC += OPCODE_LENGTH(op_catch); NEXT_INSTRUCTION(); } DEFINE_OPCODE(op_throw) { @@ -3708,47 +5137,27 @@ JSValuePtr Interpreter::privateExecute(ExecutionFlag flag, RegisterFile* registe else the script returns control to the nearest native caller. */ - int ex = (++vPC)->u.operand; - exceptionValue = callFrame[ex].jsValue(callFrame); - - handler = throwException(callFrame, exceptionValue, vPC - callFrame->codeBlock()->instructions().begin(), true); - if (!handler) { - *exception = exceptionValue; - return jsNull(); - } - - vPC = callFrame->codeBlock()->instructions().begin() + handler->target; - NEXT_INSTRUCTION(); - } - DEFINE_OPCODE(op_unexpected_load) { - /* unexpected_load load dst(r) src(k) + int ex = vPC[1].u.operand; + exceptionValue = callFrame->r(ex).jsValue(); - Copies constant src to register dst. - */ - int dst = (++vPC)->u.operand; - int src = (++vPC)->u.operand; - callFrame[dst] = JSValuePtr(callFrame->codeBlock()->unexpectedConstant(src)); + handler = throwException(callFrame, exceptionValue, vPC - codeBlock->instructions().begin()); + if (!handler) + return throwError(callFrame, exceptionValue); - ++vPC; + codeBlock = callFrame->codeBlock(); + vPC = codeBlock->instructions().begin() + handler->target; NEXT_INSTRUCTION(); } - DEFINE_OPCODE(op_new_error) { - /* new_error dst(r) type(n) message(k) + DEFINE_OPCODE(op_throw_reference_error) { + /* op_throw_reference_error message(k) - Constructs a new Error instance using the original - constructor, using immediate number n as the type and - constant message as the message string. The result is - written to register dst. + Constructs a new reference Error instance using the + original constructor, using constant message as the + message string. The result is thrown. */ - int dst = (++vPC)->u.operand; - int type = (++vPC)->u.operand; - int message = (++vPC)->u.operand; - - CodeBlock* codeBlock = callFrame->codeBlock(); - callFrame[dst] = JSValuePtr(Error::create(callFrame, (ErrorType)type, codeBlock->unexpectedConstant(message).toString(callFrame), codeBlock->lineNumberForBytecodeOffset(callFrame, vPC - codeBlock->instructions().begin()), codeBlock->ownerNode()->sourceID(), codeBlock->ownerNode()->sourceURL())); - - ++vPC; - NEXT_INSTRUCTION(); + UString message = callFrame->r(vPC[1].u.operand).jsValue().toString(callFrame)->value(callFrame); + exceptionValue = JSValue(createReferenceError(callFrame, message)); + goto vm_throw; } DEFINE_OPCODE(op_end) { /* end result(r) @@ -3757,84 +5166,48 @@ JSValuePtr Interpreter::privateExecute(ExecutionFlag flag, RegisterFile* registe program. Return control to the calling native code. */ - if (callFrame->codeBlock()->needsFullScopeChain()) { - ScopeChainNode* scopeChain = callFrame->scopeChain(); - ASSERT(scopeChain->refCount > 1); - scopeChain->deref(); - } - int result = (++vPC)->u.operand; - return callFrame[result].jsValue(callFrame); + int result = vPC[1].u.operand; + return callFrame->r(result).jsValue(); } - DEFINE_OPCODE(op_put_getter) { - /* put_getter base(r) property(id) function(r) + DEFINE_OPCODE(op_put_getter_setter) { + /* put_getter_setter base(r) property(id) getter(r) setter(r) - Sets register function on register base as the getter named - by identifier property. Base and function are assumed to be - objects as this op should only be used for getters defined - in object literal form. + Puts accessor descriptor to register base as the named + identifier property. Base and function may be objects + or undefined, this op should only be used for accessors + defined in object literal form. Unlike many opcodes, this one does not write any output to the register file. */ - int base = (++vPC)->u.operand; - int property = (++vPC)->u.operand; - int function = (++vPC)->u.operand; - - ASSERT(callFrame[base].jsValue(callFrame).isObject()); - JSObject* baseObj = asObject(callFrame[base].jsValue(callFrame)); - Identifier& ident = callFrame->codeBlock()->identifier(property); - ASSERT(callFrame[function].jsValue(callFrame).isObject()); - baseObj->defineGetter(callFrame, ident, asObject(callFrame[function].jsValue(callFrame))); - - ++vPC; - NEXT_INSTRUCTION(); - } - DEFINE_OPCODE(op_put_setter) { - /* put_setter base(r) property(id) function(r) - - Sets register function on register base as the setter named - by identifier property. Base and function are assumed to be - objects as this op should only be used for setters defined - in object literal form. + int base = vPC[1].u.operand; + int property = vPC[2].u.operand; + int getterReg = vPC[3].u.operand; + int setterReg = vPC[4].u.operand; - Unlike many opcodes, this one does not write any output to - the register file. - */ - int base = (++vPC)->u.operand; - int property = (++vPC)->u.operand; - int function = (++vPC)->u.operand; + ASSERT(callFrame->r(base).jsValue().isObject()); + JSObject* baseObj = asObject(callFrame->r(base).jsValue()); + Identifier& ident = codeBlock->identifier(property); - ASSERT(callFrame[base].jsValue(callFrame).isObject()); - JSObject* baseObj = asObject(callFrame[base].jsValue(callFrame)); - Identifier& ident = callFrame->codeBlock()->identifier(property); - ASSERT(callFrame[function].jsValue(callFrame).isObject()); - baseObj->defineSetter(callFrame, ident, asObject(callFrame[function].jsValue(callFrame))); + GetterSetter* accessor = GetterSetter::create(callFrame); - ++vPC; - NEXT_INSTRUCTION(); - } - DEFINE_OPCODE(op_jsr) { - /* jsr retAddrDst(r) target(offset) + JSValue getter = callFrame->r(getterReg).jsValue(); + JSValue setter = callFrame->r(setterReg).jsValue(); + ASSERT(getter.isObject() || getter.isUndefined()); + ASSERT(setter.isObject() || setter.isUndefined()); + ASSERT(getter.isObject() || setter.isObject()); - Places the address of the next instruction into the retAddrDst - register and jumps to offset target from the current instruction. - */ - int retAddrDst = (++vPC)->u.operand; - int target = (++vPC)->u.operand; - callFrame[retAddrDst] = vPC + 1; + if (!getter.isUndefined()) + accessor->setGetter(callFrame->globalData(), asObject(getter)); + if (!setter.isUndefined()) + accessor->setSetter(callFrame->globalData(), asObject(setter)); + baseObj->putDirectAccessor(callFrame->globalData(), ident, accessor, Accessor); - vPC += target; + vPC += OPCODE_LENGTH(op_put_getter_setter); NEXT_INSTRUCTION(); } - DEFINE_OPCODE(op_sret) { - /* sret retAddrSrc(r) - - Jumps to the address stored in the retAddrSrc register. This - differs from op_jmp because the target address is stored in a - register, not as an immediate. - */ - int retAddrSrc = (++vPC)->u.operand; - vPC = callFrame[retAddrSrc].vPC(); + DEFINE_OPCODE(op_method_check) { + vPC++; NEXT_INSTRUCTION(); } DEFINE_OPCODE(op_debug) { @@ -3843,13 +5216,13 @@ JSValuePtr Interpreter::privateExecute(ExecutionFlag flag, RegisterFile* registe Notifies the debugger of the current state of execution. This opcode is only generated while the debugger is attached. */ - int debugHookID = (++vPC)->u.operand; - int firstLine = (++vPC)->u.operand; - int lastLine = (++vPC)->u.operand; + int debugHookID = vPC[1].u.operand; + int firstLine = vPC[2].u.operand; + int lastLine = vPC[3].u.operand; debug(callFrame, static_cast(debugHookID), firstLine, lastLine); - ++vPC; + vPC += OPCODE_LENGTH(op_debug); NEXT_INSTRUCTION(); } DEFINE_OPCODE(op_profile_will_call) { @@ -3861,9 +5234,9 @@ JSValuePtr Interpreter::privateExecute(ExecutionFlag flag, RegisterFile* registe int function = vPC[1].u.operand; if (*enabledProfilerReference) - (*enabledProfilerReference)->willExecute(callFrame, callFrame[function].jsValue(callFrame)); + (*enabledProfilerReference)->willExecute(callFrame, callFrame->r(function).jsValue()); - vPC += 2; + vPC += OPCODE_LENGTH(op_profile_will_call); NEXT_INSTRUCTION(); } DEFINE_OPCODE(op_profile_did_call) { @@ -3875,81 +5248,97 @@ JSValuePtr Interpreter::privateExecute(ExecutionFlag flag, RegisterFile* registe int function = vPC[1].u.operand; if (*enabledProfilerReference) - (*enabledProfilerReference)->didExecute(callFrame, callFrame[function].jsValue(callFrame)); + (*enabledProfilerReference)->didExecute(callFrame, callFrame->r(function).jsValue()); - vPC += 2; + vPC += OPCODE_LENGTH(op_profile_did_call); NEXT_INSTRUCTION(); } vm_throw: { - globalData->exception = noValue(); + globalData->exception = JSValue(); if (!tickCount) { // The exceptionValue is a lie! (GCC produces bad code for reasons I // cannot fathom if we don't assign to the exceptionValue before branching) exceptionValue = createInterruptedExecutionException(globalData); } - handler = throwException(callFrame, exceptionValue, vPC - callFrame->codeBlock()->instructions().begin(), false); + JSGlobalObject* globalObject = callFrame->lexicalGlobalObject(); + handler = throwException(callFrame, exceptionValue, vPC - codeBlock->instructions().begin()); if (!handler) { - *exception = exceptionValue; - return jsNull(); + // Can't use the callframe at this point as the scopechain, etc have + // been released. + return throwError(globalObject->globalExec(), exceptionValue); } - vPC = callFrame->codeBlock()->instructions().begin() + handler->target; + codeBlock = callFrame->codeBlock(); + vPC = codeBlock->instructions().begin() + handler->target; NEXT_INSTRUCTION(); } } -#if !HAVE(COMPUTED_GOTO) +#if !ENABLE(COMPUTED_GOTO_CLASSIC_INTERPRETER) } // iterator loop ends #endif #undef NEXT_INSTRUCTION #undef DEFINE_OPCODE #undef CHECK_FOR_EXCEPTION #undef CHECK_FOR_TIMEOUT +#endif // ENABLE(CLASSIC_INTERPRETER) } -JSValuePtr Interpreter::retrieveArguments(CallFrame* callFrame, JSFunction* function) const +JSValue Interpreter::retrieveArgumentsFromVMCode(CallFrame* callFrame, JSFunction* function) const { - CallFrame* functionCallFrame = findFunctionCallFrame(callFrame, function); + CallFrame* functionCallFrame = findFunctionCallFrameFromVMCode(callFrame, function); if (!functionCallFrame) return jsNull(); CodeBlock* codeBlock = functionCallFrame->codeBlock(); if (codeBlock->usesArguments()) { ASSERT(codeBlock->codeType() == FunctionCode); - SymbolTable& symbolTable = codeBlock->symbolTable(); - int argumentsIndex = symbolTable.get(functionCallFrame->propertyNames().arguments.ustring().rep()).getIndex(); - return functionCallFrame[argumentsIndex].jsValue(callFrame); - } - - Arguments* arguments = functionCallFrame->optionalCalleeArguments(); - if (!arguments) { - arguments = new (functionCallFrame) Arguments(functionCallFrame); - arguments->copyRegisters(); - callFrame->setCalleeArguments(arguments); + int argumentsRegister = codeBlock->argumentsRegister(); + int realArgumentsRegister = unmodifiedArgumentsRegister(argumentsRegister); + if (JSValue arguments = functionCallFrame->uncheckedR(argumentsRegister).jsValue()) + return arguments; + JSValue arguments = JSValue(Arguments::create(callFrame->globalData(), functionCallFrame)); + functionCallFrame->r(argumentsRegister) = arguments; + functionCallFrame->r(realArgumentsRegister) = arguments; + return arguments; } - return arguments; + Arguments* arguments = Arguments::create(functionCallFrame->globalData(), functionCallFrame); + arguments->tearOff(functionCallFrame); + return JSValue(arguments); } -JSValuePtr Interpreter::retrieveCaller(CallFrame* callFrame, InternalFunction* function) const +JSValue Interpreter::retrieveCallerFromVMCode(CallFrame* callFrame, JSFunction* function) const { - CallFrame* functionCallFrame = findFunctionCallFrame(callFrame, function); + CallFrame* functionCallFrame = findFunctionCallFrameFromVMCode(callFrame, function); + if (!functionCallFrame) return jsNull(); - - CallFrame* callerFrame = functionCallFrame->callerFrame(); - if (callerFrame->hasHostCallFrameFlag()) + + int lineNumber; + CallFrame* callerFrame = getCallerInfo(&callFrame->globalData(), functionCallFrame, lineNumber); + if (!callerFrame) return jsNull(); - - JSValuePtr caller = callerFrame->callee(); + JSValue caller = callerFrame->callee(); if (!caller) return jsNull(); + // Skip over function bindings. + ASSERT(caller.isObject()); + while (asObject(caller)->inherits(&JSBoundFunction::s_info)) { + callerFrame = getCallerInfo(&callFrame->globalData(), callerFrame, lineNumber); + if (!callerFrame) + return jsNull(); + caller = callerFrame->callee(); + if (!caller) + return jsNull(); + } + return caller; } -void Interpreter::retrieveLastCaller(CallFrame* callFrame, int& lineNumber, intptr_t& sourceID, UString& sourceURL, JSValuePtr& function) const +void Interpreter::retrieveLastCaller(CallFrame* callFrame, int& lineNumber, intptr_t& sourceID, UString& sourceURL, JSValue& function) const { - function = noValue(); + function = JSValue(); lineNumber = -1; sourceURL = UString(); @@ -3960,2130 +5349,66 @@ void Interpreter::retrieveLastCaller(CallFrame* callFrame, int& lineNumber, intp CodeBlock* callerCodeBlock = callerFrame->codeBlock(); if (!callerCodeBlock) return; - - unsigned bytecodeOffset = bytecodeOffsetForPC(callerFrame, callerCodeBlock, callFrame->returnPC()); - lineNumber = callerCodeBlock->lineNumberForBytecodeOffset(callerFrame, bytecodeOffset - 1); - sourceID = callerCodeBlock->ownerNode()->sourceID(); - sourceURL = callerCodeBlock->ownerNode()->sourceURL(); + unsigned bytecodeOffset = 0; +#if ENABLE(CLASSIC_INTERPRETER) + if (!callerFrame->globalData().canUseJIT()) + bytecodeOffset = callerCodeBlock->bytecodeOffset(callFrame->returnVPC()); +#if ENABLE(JIT) + else + bytecodeOffset = callerCodeBlock->bytecodeOffset(callerFrame, callFrame->returnPC()); +#endif +#else + bytecodeOffset = callerCodeBlock->bytecodeOffset(callerFrame, callFrame->returnPC()); +#endif + lineNumber = callerCodeBlock->lineNumberForBytecodeOffset(bytecodeOffset - 1); + sourceID = callerCodeBlock->ownerExecutable()->sourceID(); + sourceURL = callerCodeBlock->ownerExecutable()->sourceURL(); function = callerFrame->callee(); } -CallFrame* Interpreter::findFunctionCallFrame(CallFrame* callFrame, InternalFunction* function) +CallFrame* Interpreter::findFunctionCallFrameFromVMCode(CallFrame* callFrame, JSFunction* function) { - for (CallFrame* candidate = callFrame; candidate; candidate = candidate->callerFrame()->removeHostCallFrameFlag()) { + for (CallFrame* candidate = callFrame->trueCallFrameFromVMCode(); candidate; candidate = candidate->trueCallerFrame()) { if (candidate->callee() == function) return candidate; } return 0; } -#if ENABLE(JIT) - -#if ENABLE(JIT_OPTIMIZE_PROPERTY_ACCESS) - -NEVER_INLINE void Interpreter::tryCTICachePutByID(CallFrame* callFrame, CodeBlock* codeBlock, void* returnAddress, JSValuePtr baseValue, const PutPropertySlot& slot) +void Interpreter::enableSampler() { - // The interpreter checks for recursion here; I do not believe this can occur in CTI. - - if (!baseValue.isCell()) - return; - - // Uncacheable: give up. - if (!slot.isCacheable()) { - ctiPatchCallByReturnAddress(returnAddress, reinterpret_cast(cti_op_put_by_id_generic)); - return; - } - - JSCell* baseCell = asCell(baseValue); - Structure* structure = baseCell->structure(); - - if (structure->isDictionary()) { - ctiPatchCallByReturnAddress(returnAddress, reinterpret_cast(cti_op_put_by_id_generic)); - return; - } - - // If baseCell != base, then baseCell must be a proxy for another object. - if (baseCell != slot.base()) { - ctiPatchCallByReturnAddress(returnAddress, reinterpret_cast(cti_op_put_by_id_generic)); - return; - } - - StructureStubInfo* stubInfo = &codeBlock->getStubInfo(returnAddress); - - // Cache hit: Specialize instruction and ref Structures. - - // Structure transition, cache transition info - if (slot.type() == PutPropertySlot::NewProperty) { - StructureChain* prototypeChain = structure->prototypeChain(callFrame); - stubInfo->initPutByIdTransition(structure->previousID(), structure, prototypeChain); - JIT::compilePutByIdTransition(callFrame->scopeChain()->globalData, codeBlock, stubInfo, structure->previousID(), structure, slot.cachedOffset(), prototypeChain, returnAddress); - return; +#if ENABLE(OPCODE_SAMPLING) + if (!m_sampler) { + m_sampler = adoptPtr(new SamplingTool(this)); + m_sampler->setup(); } - - stubInfo->initPutByIdReplace(structure); - -#if USE(CTI_REPATCH_PIC) - UNUSED_PARAM(callFrame); - JIT::patchPutByIdReplace(stubInfo, structure, slot.cachedOffset(), returnAddress); -#else - JIT::compilePutByIdReplace(callFrame->scopeChain()->globalData, callFrame, codeBlock, stubInfo, structure, slot.cachedOffset(), returnAddress); #endif } - -NEVER_INLINE void Interpreter::tryCTICacheGetByID(CallFrame* callFrame, CodeBlock* codeBlock, void* returnAddress, JSValuePtr baseValue, const Identifier& propertyName, const PropertySlot& slot) +void Interpreter::dumpSampleData(ExecState* exec) { - // FIXME: Write a test that proves we need to check for recursion here just - // like the interpreter does, then add a check for recursion. - - // FIXME: Cache property access for immediates. - if (!baseValue.isCell()) { - ctiPatchCallByReturnAddress(returnAddress, reinterpret_cast(cti_op_get_by_id_generic)); - return; - } - - if (isJSArray(baseValue) && propertyName == callFrame->propertyNames().length) { -#if USE(CTI_REPATCH_PIC) - JIT::compilePatchGetArrayLength(callFrame->scopeChain()->globalData, codeBlock, returnAddress); -#else - ctiPatchCallByReturnAddress(returnAddress, m_ctiArrayLengthTrampoline); -#endif - return; - } - if (isJSString(baseValue) && propertyName == callFrame->propertyNames().length) { - // The tradeoff of compiling an patched inline string length access routine does not seem - // to pay off, so we currently only do this for arrays. - ctiPatchCallByReturnAddress(returnAddress, m_ctiStringLengthTrampoline); - return; - } - - // Uncacheable: give up. - if (!slot.isCacheable()) { - ctiPatchCallByReturnAddress(returnAddress, reinterpret_cast(cti_op_get_by_id_generic)); - return; - } - - JSCell* baseCell = asCell(baseValue); - Structure* structure = baseCell->structure(); - - if (structure->isDictionary()) { - ctiPatchCallByReturnAddress(returnAddress, reinterpret_cast(cti_op_get_by_id_generic)); - return; - } - - // In the interpreter the last structure is trapped here; in CTI we use the - // *_second method to achieve a similar (but not quite the same) effect. - - StructureStubInfo* stubInfo = &codeBlock->getStubInfo(returnAddress); - - // Cache hit: Specialize instruction and ref Structures. - - if (slot.slotBase() == baseValue) { - // set this up, so derefStructures can do it's job. - stubInfo->initGetByIdSelf(structure); - -#if USE(CTI_REPATCH_PIC) - JIT::patchGetByIdSelf(stubInfo, structure, slot.cachedOffset(), returnAddress); +#if ENABLE(OPCODE_SAMPLING) + if (m_sampler) + m_sampler->dump(exec); #else - JIT::compileGetByIdSelf(callFrame->scopeChain()->globalData, callFrame, codeBlock, stubInfo, structure, slot.cachedOffset(), returnAddress); + UNUSED_PARAM(exec); #endif - return; - } - - if (slot.slotBase() == structure->prototypeForLookup(callFrame)) { - ASSERT(slot.slotBase().isObject()); - - JSObject* slotBaseObject = asObject(slot.slotBase()); - - // Since we're accessing a prototype in a loop, it's a good bet that it - // should not be treated as a dictionary. - if (slotBaseObject->structure()->isDictionary()) - slotBaseObject->setStructure(Structure::fromDictionaryTransition(slotBaseObject->structure())); - - stubInfo->initGetByIdProto(structure, slotBaseObject->structure()); - - JIT::compileGetByIdProto(callFrame->scopeChain()->globalData, callFrame, codeBlock, stubInfo, structure, slotBaseObject->structure(), slot.cachedOffset(), returnAddress); - return; - } - - size_t count = countPrototypeChainEntriesAndCheckForProxies(callFrame, baseValue, slot); - if (!count) { - stubInfo->opcodeID = op_get_by_id_generic; - return; - } - - StructureChain* prototypeChain = structure->prototypeChain(callFrame); - stubInfo->initGetByIdChain(structure, prototypeChain); - JIT::compileGetByIdChain(callFrame->scopeChain()->globalData, callFrame, codeBlock, stubInfo, structure, prototypeChain, count, slot.cachedOffset(), returnAddress); } - -#endif - -#if USE(JIT_STUB_ARGUMENT_VA_LIST) -#define SETUP_VA_LISTL_ARGS va_list vl_args; va_start(vl_args, args) -#else // JIT_STUB_ARGUMENT_REGISTER or JIT_STUB_ARGUMENT_STACK -#define SETUP_VA_LISTL_ARGS -#endif - -#ifndef NDEBUG - -extern "C" { - -static void jscGeneratedNativeCode() +void Interpreter::startSampling() { - // When executing a CTI function (which might do an allocation), we hack the return address - // to pretend to be executing this function, to keep stack logging tools from blowing out - // memory. -} - -} - -struct StackHack { - ALWAYS_INLINE StackHack(void** location) - { - returnAddressLocation = location; - savedReturnAddress = *returnAddressLocation; - ctiSetReturnAddress(returnAddressLocation, reinterpret_cast(jscGeneratedNativeCode)); - } - ALWAYS_INLINE ~StackHack() - { - ctiSetReturnAddress(returnAddressLocation, savedReturnAddress); - } - - void** returnAddressLocation; - void* savedReturnAddress; -}; - -#define BEGIN_STUB_FUNCTION() SETUP_VA_LISTL_ARGS; StackHack stackHack(&STUB_RETURN_ADDRESS_SLOT) -#define STUB_SET_RETURN_ADDRESS(address) stackHack.savedReturnAddress = address -#define STUB_RETURN_ADDRESS stackHack.savedReturnAddress - -#else - -#define BEGIN_STUB_FUNCTION() SETUP_VA_LISTL_ARGS -#define STUB_SET_RETURN_ADDRESS(address) ctiSetReturnAddress(&STUB_RETURN_ADDRESS_SLOT, address); -#define STUB_RETURN_ADDRESS STUB_RETURN_ADDRESS_SLOT +#if ENABLE(SAMPLING_THREAD) + if (!m_sampleEntryDepth) + SamplingThread::start(); + m_sampleEntryDepth++; #endif - -// The reason this is not inlined is to avoid having to do a PIC branch -// to get the address of the ctiVMThrowTrampoline function. It's also -// good to keep the code size down by leaving as much of the exception -// handling code out of line as possible. -static NEVER_INLINE void returnToThrowTrampoline(JSGlobalData* globalData, void* exceptionLocation, void*& returnAddressSlot) -{ - ASSERT(globalData->exception); - globalData->exceptionLocation = exceptionLocation; - ctiSetReturnAddress(&returnAddressSlot, reinterpret_cast(ctiVMThrowTrampoline)); -} - -static NEVER_INLINE void throwStackOverflowError(CallFrame* callFrame, JSGlobalData* globalData, void* exceptionLocation, void*& returnAddressSlot) -{ - globalData->exception = createStackOverflowError(callFrame); - returnToThrowTrampoline(globalData, exceptionLocation, returnAddressSlot); -} - -#define VM_THROW_EXCEPTION() \ - do { \ - VM_THROW_EXCEPTION_AT_END(); \ - return 0; \ - } while (0) -#define VM_THROW_EXCEPTION_2() \ - do { \ - VM_THROW_EXCEPTION_AT_END(); \ - RETURN_PAIR(0, 0); \ - } while (0) -#define VM_THROW_EXCEPTION_AT_END() \ - returnToThrowTrampoline(ARG_globalData, STUB_RETURN_ADDRESS, STUB_RETURN_ADDRESS) - -#define CHECK_FOR_EXCEPTION() \ - do { \ - if (UNLIKELY(ARG_globalData->exception != noValue())) \ - VM_THROW_EXCEPTION(); \ - } while (0) -#define CHECK_FOR_EXCEPTION_AT_END() \ - do { \ - if (UNLIKELY(ARG_globalData->exception != noValue())) \ - VM_THROW_EXCEPTION_AT_END(); \ - } while (0) -#define CHECK_FOR_EXCEPTION_VOID() \ - do { \ - if (UNLIKELY(ARG_globalData->exception != noValue())) { \ - VM_THROW_EXCEPTION_AT_END(); \ - return; \ - } \ - } while (0) - -JSObject* Interpreter::cti_op_convert_this(STUB_ARGS) -{ - BEGIN_STUB_FUNCTION(); - - JSValuePtr v1 = ARG_src1; - CallFrame* callFrame = ARG_callFrame; - - JSObject* result = v1.toThisObject(callFrame); - CHECK_FOR_EXCEPTION_AT_END(); - return result; } - -void Interpreter::cti_op_end(STUB_ARGS) -{ - BEGIN_STUB_FUNCTION(); - - ScopeChainNode* scopeChain = ARG_callFrame->scopeChain(); - ASSERT(scopeChain->refCount > 1); - scopeChain->deref(); -} - -JSValueEncodedAsPointer* Interpreter::cti_op_add(STUB_ARGS) -{ - BEGIN_STUB_FUNCTION(); - - JSValuePtr v1 = ARG_src1; - JSValuePtr v2 = ARG_src2; - - double left; - double right = 0.0; - - bool rightIsNumber = v2.getNumber(right); - if (rightIsNumber && v1.getNumber(left)) - return JSValuePtr::encode(jsNumber(ARG_globalData, left + right)); - - CallFrame* callFrame = ARG_callFrame; - - bool leftIsString = v1.isString(); - if (leftIsString && v2.isString()) { - RefPtr value = concatenate(asString(v1)->value().rep(), asString(v2)->value().rep()); - if (UNLIKELY(!value)) { - throwOutOfMemoryError(callFrame); - VM_THROW_EXCEPTION(); - } - - return JSValuePtr::encode(jsString(ARG_globalData, value.release())); - } - - if (rightIsNumber & leftIsString) { - RefPtr value = v2.isInt32Fast() ? - concatenate(asString(v1)->value().rep(), v2.getInt32Fast()) : - concatenate(asString(v1)->value().rep(), right); - - if (UNLIKELY(!value)) { - throwOutOfMemoryError(callFrame); - VM_THROW_EXCEPTION(); - } - return JSValuePtr::encode(jsString(ARG_globalData, value.release())); - } - - // All other cases are pretty uncommon - JSValuePtr result = jsAddSlowCase(callFrame, v1, v2); - CHECK_FOR_EXCEPTION_AT_END(); - return JSValuePtr::encode(result); -} - -JSValueEncodedAsPointer* Interpreter::cti_op_pre_inc(STUB_ARGS) -{ - BEGIN_STUB_FUNCTION(); - - JSValuePtr v = ARG_src1; - - CallFrame* callFrame = ARG_callFrame; - JSValuePtr result = jsNumber(ARG_globalData, v.toNumber(callFrame) + 1); - CHECK_FOR_EXCEPTION_AT_END(); - return JSValuePtr::encode(result); -} - -int Interpreter::cti_timeout_check(STUB_ARGS) +void Interpreter::stopSampling() { - BEGIN_STUB_FUNCTION(); - Interpreter* interpreter = ARG_globalData->interpreter; - - if (interpreter->checkTimeout(ARG_callFrame->dynamicGlobalObject())) { - ARG_globalData->exception = createInterruptedExecutionException(ARG_globalData); - VM_THROW_EXCEPTION_AT_END(); - } - - return interpreter->m_ticksUntilNextTimeoutCheck; +#if ENABLE(SAMPLING_THREAD) + m_sampleEntryDepth--; + if (!m_sampleEntryDepth) + SamplingThread::stop(); +#endif } -void Interpreter::cti_register_file_check(STUB_ARGS) -{ - BEGIN_STUB_FUNCTION(); - - if (LIKELY(ARG_registerFile->grow(ARG_callFrame + ARG_callFrame->codeBlock()->m_numCalleeRegisters))) - return; - - // Rewind to the previous call frame because op_call already optimistically - // moved the call frame forward. - CallFrame* oldCallFrame = ARG_callFrame->callerFrame(); - ARG_setCallFrame(oldCallFrame); - throwStackOverflowError(oldCallFrame, ARG_globalData, oldCallFrame->returnPC(), STUB_RETURN_ADDRESS); -} - -int Interpreter::cti_op_loop_if_less(STUB_ARGS) -{ - BEGIN_STUB_FUNCTION(); - - JSValuePtr src1 = ARG_src1; - JSValuePtr src2 = ARG_src2; - CallFrame* callFrame = ARG_callFrame; - - bool result = jsLess(callFrame, src1, src2); - CHECK_FOR_EXCEPTION_AT_END(); - return result; -} - -int Interpreter::cti_op_loop_if_lesseq(STUB_ARGS) -{ - BEGIN_STUB_FUNCTION(); - - JSValuePtr src1 = ARG_src1; - JSValuePtr src2 = ARG_src2; - CallFrame* callFrame = ARG_callFrame; - - bool result = jsLessEq(callFrame, src1, src2); - CHECK_FOR_EXCEPTION_AT_END(); - return result; -} - -JSObject* Interpreter::cti_op_new_object(STUB_ARGS) -{ - BEGIN_STUB_FUNCTION(); - - return constructEmptyObject(ARG_callFrame); -} - -void Interpreter::cti_op_put_by_id_generic(STUB_ARGS) -{ - BEGIN_STUB_FUNCTION(); - - PutPropertySlot slot; - ARG_src1.put(ARG_callFrame, *ARG_id2, ARG_src3, slot); - CHECK_FOR_EXCEPTION_AT_END(); -} - -JSValueEncodedAsPointer* Interpreter::cti_op_get_by_id_generic(STUB_ARGS) -{ - BEGIN_STUB_FUNCTION(); - - CallFrame* callFrame = ARG_callFrame; - Identifier& ident = *ARG_id2; - - JSValuePtr baseValue = ARG_src1; - PropertySlot slot(baseValue); - JSValuePtr result = baseValue.get(callFrame, ident, slot); - - CHECK_FOR_EXCEPTION_AT_END(); - return JSValuePtr::encode(result); -} - -#if ENABLE(JIT_OPTIMIZE_PROPERTY_ACCESS) - -void Interpreter::cti_op_put_by_id(STUB_ARGS) -{ - BEGIN_STUB_FUNCTION(); - - CallFrame* callFrame = ARG_callFrame; - Identifier& ident = *ARG_id2; - - PutPropertySlot slot; - ARG_src1.put(callFrame, ident, ARG_src3, slot); - - ctiPatchCallByReturnAddress(STUB_RETURN_ADDRESS, reinterpret_cast(cti_op_put_by_id_second)); - - CHECK_FOR_EXCEPTION_AT_END(); -} - -void Interpreter::cti_op_put_by_id_second(STUB_ARGS) -{ - BEGIN_STUB_FUNCTION(); - - PutPropertySlot slot; - ARG_src1.put(ARG_callFrame, *ARG_id2, ARG_src3, slot); - ARG_globalData->interpreter->tryCTICachePutByID(ARG_callFrame, ARG_callFrame->codeBlock(), STUB_RETURN_ADDRESS, ARG_src1, slot); - CHECK_FOR_EXCEPTION_AT_END(); -} - -void Interpreter::cti_op_put_by_id_fail(STUB_ARGS) -{ - BEGIN_STUB_FUNCTION(); - - CallFrame* callFrame = ARG_callFrame; - Identifier& ident = *ARG_id2; - - PutPropertySlot slot; - ARG_src1.put(callFrame, ident, ARG_src3, slot); - - CHECK_FOR_EXCEPTION_AT_END(); -} - -JSValueEncodedAsPointer* Interpreter::cti_op_get_by_id(STUB_ARGS) -{ - BEGIN_STUB_FUNCTION(); - - CallFrame* callFrame = ARG_callFrame; - Identifier& ident = *ARG_id2; - - JSValuePtr baseValue = ARG_src1; - PropertySlot slot(baseValue); - JSValuePtr result = baseValue.get(callFrame, ident, slot); - - ctiPatchCallByReturnAddress(STUB_RETURN_ADDRESS, reinterpret_cast(cti_op_get_by_id_second)); - - CHECK_FOR_EXCEPTION_AT_END(); - return JSValuePtr::encode(result); -} - -JSValueEncodedAsPointer* Interpreter::cti_op_get_by_id_second(STUB_ARGS) -{ - BEGIN_STUB_FUNCTION(); - - CallFrame* callFrame = ARG_callFrame; - Identifier& ident = *ARG_id2; - - JSValuePtr baseValue = ARG_src1; - PropertySlot slot(baseValue); - JSValuePtr result = baseValue.get(callFrame, ident, slot); - - ARG_globalData->interpreter->tryCTICacheGetByID(callFrame, callFrame->codeBlock(), STUB_RETURN_ADDRESS, baseValue, ident, slot); - - CHECK_FOR_EXCEPTION_AT_END(); - return JSValuePtr::encode(result); -} - -JSValueEncodedAsPointer* Interpreter::cti_op_get_by_id_self_fail(STUB_ARGS) -{ - BEGIN_STUB_FUNCTION(); - - CallFrame* callFrame = ARG_callFrame; - Identifier& ident = *ARG_id2; - - JSValuePtr baseValue = ARG_src1; - PropertySlot slot(baseValue); - JSValuePtr result = baseValue.get(callFrame, ident, slot); - - CHECK_FOR_EXCEPTION(); - - if (baseValue.isCell() - && slot.isCacheable() - && !asCell(baseValue)->structure()->isDictionary() - && slot.slotBase() == baseValue) { - - CodeBlock* codeBlock = callFrame->codeBlock(); - StructureStubInfo* stubInfo = &codeBlock->getStubInfo(STUB_RETURN_ADDRESS); - - ASSERT(slot.slotBase().isObject()); - - PolymorphicAccessStructureList* polymorphicStructureList; - int listIndex = 1; - - if (stubInfo->opcodeID == op_get_by_id_self) { - ASSERT(!stubInfo->stubRoutine); - polymorphicStructureList = new PolymorphicAccessStructureList(0, stubInfo->u.getByIdSelf.baseObjectStructure); - stubInfo->initGetByIdSelfList(polymorphicStructureList, 2); - } else { - polymorphicStructureList = stubInfo->u.getByIdSelfList.structureList; - listIndex = stubInfo->u.getByIdSelfList.listSize; - stubInfo->u.getByIdSelfList.listSize++; - } - - JIT::compileGetByIdSelfList(callFrame->scopeChain()->globalData, codeBlock, stubInfo, polymorphicStructureList, listIndex, asCell(baseValue)->structure(), slot.cachedOffset()); - - if (listIndex == (POLYMORPHIC_LIST_CACHE_SIZE - 1)) - ctiPatchCallByReturnAddress(STUB_RETURN_ADDRESS, reinterpret_cast(cti_op_get_by_id_generic)); - } else { - ctiPatchCallByReturnAddress(STUB_RETURN_ADDRESS, reinterpret_cast(cti_op_get_by_id_generic)); - } - return JSValuePtr::encode(result); -} - -static PolymorphicAccessStructureList* getPolymorphicAccessStructureListSlot(StructureStubInfo* stubInfo, int& listIndex) -{ - PolymorphicAccessStructureList* prototypeStructureList = 0; - listIndex = 1; - - switch (stubInfo->opcodeID) { - case op_get_by_id_proto: - prototypeStructureList = new PolymorphicAccessStructureList(stubInfo->stubRoutine, stubInfo->u.getByIdProto.baseObjectStructure, stubInfo->u.getByIdProto.prototypeStructure); - stubInfo->stubRoutine = 0; - stubInfo->initGetByIdProtoList(prototypeStructureList, 2); - break; - case op_get_by_id_chain: - prototypeStructureList = new PolymorphicAccessStructureList(stubInfo->stubRoutine, stubInfo->u.getByIdChain.baseObjectStructure, stubInfo->u.getByIdChain.chain); - stubInfo->stubRoutine = 0; - stubInfo->initGetByIdProtoList(prototypeStructureList, 2); - break; - case op_get_by_id_proto_list: - prototypeStructureList = stubInfo->u.getByIdProtoList.structureList; - listIndex = stubInfo->u.getByIdProtoList.listSize; - stubInfo->u.getByIdProtoList.listSize++; - break; - default: - ASSERT_NOT_REACHED(); - } - - ASSERT(listIndex < POLYMORPHIC_LIST_CACHE_SIZE); - return prototypeStructureList; -} - -JSValueEncodedAsPointer* Interpreter::cti_op_get_by_id_proto_list(STUB_ARGS) -{ - BEGIN_STUB_FUNCTION(); - - CallFrame* callFrame = ARG_callFrame; - - JSValuePtr baseValue = ARG_src1; - PropertySlot slot(baseValue); - JSValuePtr result = baseValue.get(callFrame, *ARG_id2, slot); - - CHECK_FOR_EXCEPTION(); - - if (!baseValue.isCell() || !slot.isCacheable() || asCell(baseValue)->structure()->isDictionary()) { - ctiPatchCallByReturnAddress(STUB_RETURN_ADDRESS, reinterpret_cast(cti_op_get_by_id_proto_fail)); - return JSValuePtr::encode(result); - } - - Structure* structure = asCell(baseValue)->structure(); - CodeBlock* codeBlock = callFrame->codeBlock(); - StructureStubInfo* stubInfo = &codeBlock->getStubInfo(STUB_RETURN_ADDRESS); - - ASSERT(slot.slotBase().isObject()); - JSObject* slotBaseObject = asObject(slot.slotBase()); - - if (slot.slotBase() == baseValue) - ctiPatchCallByReturnAddress(STUB_RETURN_ADDRESS, reinterpret_cast(cti_op_get_by_id_proto_fail)); - else if (slot.slotBase() == asCell(baseValue)->structure()->prototypeForLookup(callFrame)) { - // Since we're accessing a prototype in a loop, it's a good bet that it - // should not be treated as a dictionary. - if (slotBaseObject->structure()->isDictionary()) - slotBaseObject->setStructure(Structure::fromDictionaryTransition(slotBaseObject->structure())); - - int listIndex; - PolymorphicAccessStructureList* prototypeStructureList = getPolymorphicAccessStructureListSlot(stubInfo, listIndex); - - JIT::compileGetByIdProtoList(callFrame->scopeChain()->globalData, callFrame, codeBlock, stubInfo, prototypeStructureList, listIndex, structure, slotBaseObject->structure(), slot.cachedOffset()); - - if (listIndex == (POLYMORPHIC_LIST_CACHE_SIZE - 1)) - ctiPatchCallByReturnAddress(STUB_RETURN_ADDRESS, reinterpret_cast(cti_op_get_by_id_proto_list_full)); - } else if (size_t count = countPrototypeChainEntriesAndCheckForProxies(callFrame, baseValue, slot)) { - int listIndex; - PolymorphicAccessStructureList* prototypeStructureList = getPolymorphicAccessStructureListSlot(stubInfo, listIndex); - - JIT::compileGetByIdChainList(callFrame->scopeChain()->globalData, callFrame, codeBlock, stubInfo, prototypeStructureList, listIndex, structure, structure->prototypeChain(callFrame), count, slot.cachedOffset()); - - if (listIndex == (POLYMORPHIC_LIST_CACHE_SIZE - 1)) - ctiPatchCallByReturnAddress(STUB_RETURN_ADDRESS, reinterpret_cast(cti_op_get_by_id_proto_list_full)); - } else - ctiPatchCallByReturnAddress(STUB_RETURN_ADDRESS, reinterpret_cast(cti_op_get_by_id_proto_fail)); - - return JSValuePtr::encode(result); -} - -JSValueEncodedAsPointer* Interpreter::cti_op_get_by_id_proto_list_full(STUB_ARGS) -{ - BEGIN_STUB_FUNCTION(); - - JSValuePtr baseValue = ARG_src1; - PropertySlot slot(baseValue); - JSValuePtr result = baseValue.get(ARG_callFrame, *ARG_id2, slot); - - CHECK_FOR_EXCEPTION_AT_END(); - return JSValuePtr::encode(result); -} - -JSValueEncodedAsPointer* Interpreter::cti_op_get_by_id_proto_fail(STUB_ARGS) -{ - BEGIN_STUB_FUNCTION(); - - JSValuePtr baseValue = ARG_src1; - PropertySlot slot(baseValue); - JSValuePtr result = baseValue.get(ARG_callFrame, *ARG_id2, slot); - - CHECK_FOR_EXCEPTION_AT_END(); - return JSValuePtr::encode(result); -} - -JSValueEncodedAsPointer* Interpreter::cti_op_get_by_id_array_fail(STUB_ARGS) -{ - BEGIN_STUB_FUNCTION(); - - JSValuePtr baseValue = ARG_src1; - PropertySlot slot(baseValue); - JSValuePtr result = baseValue.get(ARG_callFrame, *ARG_id2, slot); - - CHECK_FOR_EXCEPTION_AT_END(); - return JSValuePtr::encode(result); -} - -JSValueEncodedAsPointer* Interpreter::cti_op_get_by_id_string_fail(STUB_ARGS) -{ - BEGIN_STUB_FUNCTION(); - - JSValuePtr baseValue = ARG_src1; - PropertySlot slot(baseValue); - JSValuePtr result = baseValue.get(ARG_callFrame, *ARG_id2, slot); - - CHECK_FOR_EXCEPTION_AT_END(); - return JSValuePtr::encode(result); -} - -#endif - -JSValueEncodedAsPointer* Interpreter::cti_op_instanceof(STUB_ARGS) -{ - BEGIN_STUB_FUNCTION(); - - CallFrame* callFrame = ARG_callFrame; - JSValuePtr value = ARG_src1; - JSValuePtr baseVal = ARG_src2; - JSValuePtr proto = ARG_src3; - - // at least one of these checks must have failed to get to the slow case - ASSERT(!value.isCell() || !baseVal.isCell() || !proto.isCell() - || !value.isObject() || !baseVal.isObject() || !proto.isObject() - || (asObject(baseVal)->structure()->typeInfo().flags() & (ImplementsHasInstance | OverridesHasInstance)) != ImplementsHasInstance); - - if (!baseVal.isObject()) { - CallFrame* callFrame = ARG_callFrame; - CodeBlock* codeBlock = callFrame->codeBlock(); - unsigned vPCIndex = codeBlock->getBytecodeIndex(callFrame, STUB_RETURN_ADDRESS); - ARG_globalData->exception = createInvalidParamError(callFrame, "instanceof", baseVal, vPCIndex, codeBlock); - VM_THROW_EXCEPTION(); - } - - if (!asObject(baseVal)->structure()->typeInfo().implementsHasInstance()) - return JSValuePtr::encode(jsBoolean(false)); - - if (!proto.isObject()) { - throwError(callFrame, TypeError, "instanceof called on an object with an invalid prototype property."); - VM_THROW_EXCEPTION(); - } - - if (!value.isObject()) - return JSValuePtr::encode(jsBoolean(false)); - - JSValuePtr result = jsBoolean(asObject(baseVal)->hasInstance(callFrame, value, proto)); - CHECK_FOR_EXCEPTION_AT_END(); - - return JSValuePtr::encode(result); -} - -JSValueEncodedAsPointer* Interpreter::cti_op_del_by_id(STUB_ARGS) -{ - BEGIN_STUB_FUNCTION(); - - CallFrame* callFrame = ARG_callFrame; - - JSObject* baseObj = ARG_src1.toObject(callFrame); - - JSValuePtr result = jsBoolean(baseObj->deleteProperty(callFrame, *ARG_id2)); - CHECK_FOR_EXCEPTION_AT_END(); - return JSValuePtr::encode(result); -} - -JSValueEncodedAsPointer* Interpreter::cti_op_mul(STUB_ARGS) -{ - BEGIN_STUB_FUNCTION(); - - JSValuePtr src1 = ARG_src1; - JSValuePtr src2 = ARG_src2; - - double left; - double right; - if (src1.getNumber(left) && src2.getNumber(right)) - return JSValuePtr::encode(jsNumber(ARG_globalData, left * right)); - - CallFrame* callFrame = ARG_callFrame; - JSValuePtr result = jsNumber(ARG_globalData, src1.toNumber(callFrame) * src2.toNumber(callFrame)); - CHECK_FOR_EXCEPTION_AT_END(); - return JSValuePtr::encode(result); -} - -JSObject* Interpreter::cti_op_new_func(STUB_ARGS) -{ - BEGIN_STUB_FUNCTION(); - - return ARG_func1->makeFunction(ARG_callFrame, ARG_callFrame->scopeChain()); -} - -void* Interpreter::cti_op_call_JSFunction(STUB_ARGS) -{ - BEGIN_STUB_FUNCTION(); - -#ifndef NDEBUG - CallData callData; - ASSERT(ARG_src1.getCallData(callData) == CallTypeJS); -#endif - - ScopeChainNode* callDataScopeChain = asFunction(ARG_src1)->m_scopeChain.node(); - CodeBlock* newCodeBlock = &asFunction(ARG_src1)->body()->bytecode(callDataScopeChain); - - if (!newCodeBlock->jitCode()) - JIT::compile(ARG_globalData, newCodeBlock); - - return newCodeBlock; -} - -VoidPtrPair Interpreter::cti_op_call_arityCheck(STUB_ARGS) -{ - BEGIN_STUB_FUNCTION(); - - CallFrame* callFrame = ARG_callFrame; - CodeBlock* newCodeBlock = ARG_codeBlock4; - int argCount = ARG_int3; - - ASSERT(argCount != newCodeBlock->m_numParameters); - - CallFrame* oldCallFrame = callFrame->callerFrame(); - - if (argCount > newCodeBlock->m_numParameters) { - size_t numParameters = newCodeBlock->m_numParameters; - Register* r = callFrame->registers() + numParameters; - - Register* argv = r - RegisterFile::CallFrameHeaderSize - numParameters - argCount; - for (size_t i = 0; i < numParameters; ++i) - argv[i + argCount] = argv[i]; - - callFrame = CallFrame::create(r); - callFrame->setCallerFrame(oldCallFrame); - } else { - size_t omittedArgCount = newCodeBlock->m_numParameters - argCount; - Register* r = callFrame->registers() + omittedArgCount; - Register* newEnd = r + newCodeBlock->m_numCalleeRegisters; - if (!ARG_registerFile->grow(newEnd)) { - // Rewind to the previous call frame because op_call already optimistically - // moved the call frame forward. - ARG_setCallFrame(oldCallFrame); - throwStackOverflowError(oldCallFrame, ARG_globalData, ARG_returnAddress2, STUB_RETURN_ADDRESS); - RETURN_PAIR(0, 0); - } - - Register* argv = r - RegisterFile::CallFrameHeaderSize - omittedArgCount; - for (size_t i = 0; i < omittedArgCount; ++i) - argv[i] = jsUndefined(); - - callFrame = CallFrame::create(r); - callFrame->setCallerFrame(oldCallFrame); - } - - RETURN_PAIR(newCodeBlock, callFrame); -} - -void* Interpreter::cti_vm_dontLazyLinkCall(STUB_ARGS) -{ - BEGIN_STUB_FUNCTION(); - - JSFunction* callee = asFunction(ARG_src1); - CodeBlock* codeBlock = &callee->body()->bytecode(callee->m_scopeChain.node()); - if (!codeBlock->jitCode()) - JIT::compile(ARG_globalData, codeBlock); - - ctiPatchCallByReturnAddress(ARG_returnAddress2, ARG_globalData->interpreter->m_ctiVirtualCallLink); - - return codeBlock->jitCode(); -} - -void* Interpreter::cti_vm_lazyLinkCall(STUB_ARGS) -{ - BEGIN_STUB_FUNCTION(); - - JSFunction* callee = asFunction(ARG_src1); - CodeBlock* codeBlock = &callee->body()->bytecode(callee->m_scopeChain.node()); - if (!codeBlock->jitCode()) - JIT::compile(ARG_globalData, codeBlock); - - CallLinkInfo* callLinkInfo = &ARG_callFrame->callerFrame()->codeBlock()->getCallLinkInfo(ARG_returnAddress2); - JIT::linkCall(callee, codeBlock, codeBlock->jitCode(), callLinkInfo, ARG_int3); - - return codeBlock->jitCode(); -} - -JSObject* Interpreter::cti_op_push_activation(STUB_ARGS) -{ - BEGIN_STUB_FUNCTION(); - - JSActivation* activation = new (ARG_globalData) JSActivation(ARG_callFrame, static_cast(ARG_callFrame->codeBlock()->ownerNode())); - ARG_callFrame->setScopeChain(ARG_callFrame->scopeChain()->copy()->push(activation)); - return activation; -} - -JSValueEncodedAsPointer* Interpreter::cti_op_call_NotJSFunction(STUB_ARGS) -{ - BEGIN_STUB_FUNCTION(); - - JSValuePtr funcVal = ARG_src1; - - CallData callData; - CallType callType = funcVal.getCallData(callData); - - ASSERT(callType != CallTypeJS); - - if (callType == CallTypeHost) { - int registerOffset = ARG_int2; - int argCount = ARG_int3; - CallFrame* previousCallFrame = ARG_callFrame; - CallFrame* callFrame = CallFrame::create(previousCallFrame->registers() + registerOffset); - - callFrame->init(0, static_cast(STUB_RETURN_ADDRESS), previousCallFrame->scopeChain(), previousCallFrame, 0, argCount, 0); - ARG_setCallFrame(callFrame); - - Register* argv = ARG_callFrame->registers() - RegisterFile::CallFrameHeaderSize - argCount; - ArgList argList(argv + 1, argCount - 1); - - JSValuePtr returnValue; - { - SamplingTool::HostCallRecord callRecord(CTI_SAMPLER); - - // FIXME: All host methods should be calling toThisObject, but this is not presently the case. - JSValuePtr thisValue = argv[0].jsValue(callFrame); - if (thisValue == jsNull()) - thisValue = callFrame->globalThisValue(); - - returnValue = callData.native.function(callFrame, asObject(funcVal), thisValue, argList); - } - ARG_setCallFrame(previousCallFrame); - CHECK_FOR_EXCEPTION(); - - return JSValuePtr::encode(returnValue); - } - - ASSERT(callType == CallTypeNone); - - CallFrame* callFrame = ARG_callFrame; - CodeBlock* codeBlock = callFrame->codeBlock(); - unsigned vPCIndex = codeBlock->getBytecodeIndex(callFrame, STUB_RETURN_ADDRESS); - ARG_globalData->exception = createNotAFunctionError(ARG_callFrame, funcVal, vPCIndex, codeBlock); - VM_THROW_EXCEPTION(); -} - -void Interpreter::cti_op_create_arguments(STUB_ARGS) -{ - BEGIN_STUB_FUNCTION(); - - Arguments* arguments = new (ARG_globalData) Arguments(ARG_callFrame); - ARG_callFrame->setCalleeArguments(arguments); - ARG_callFrame[RegisterFile::ArgumentsRegister] = arguments; -} - -void Interpreter::cti_op_create_arguments_no_params(STUB_ARGS) -{ - BEGIN_STUB_FUNCTION(); - - Arguments* arguments = new (ARG_globalData) Arguments(ARG_callFrame, Arguments::NoParameters); - ARG_callFrame->setCalleeArguments(arguments); - ARG_callFrame[RegisterFile::ArgumentsRegister] = arguments; -} - -void Interpreter::cti_op_tear_off_activation(STUB_ARGS) -{ - BEGIN_STUB_FUNCTION(); - - ASSERT(ARG_callFrame->codeBlock()->needsFullScopeChain()); - asActivation(ARG_src1)->copyRegisters(ARG_callFrame->optionalCalleeArguments()); -} - -void Interpreter::cti_op_tear_off_arguments(STUB_ARGS) -{ - BEGIN_STUB_FUNCTION(); - - ASSERT(ARG_callFrame->codeBlock()->usesArguments() && !ARG_callFrame->codeBlock()->needsFullScopeChain()); - ARG_callFrame->optionalCalleeArguments()->copyRegisters(); -} - -void Interpreter::cti_op_profile_will_call(STUB_ARGS) -{ - BEGIN_STUB_FUNCTION(); - - ASSERT(*ARG_profilerReference); - (*ARG_profilerReference)->willExecute(ARG_callFrame, ARG_src1); -} - -void Interpreter::cti_op_profile_did_call(STUB_ARGS) -{ - BEGIN_STUB_FUNCTION(); - - ASSERT(*ARG_profilerReference); - (*ARG_profilerReference)->didExecute(ARG_callFrame, ARG_src1); -} - -void Interpreter::cti_op_ret_scopeChain(STUB_ARGS) -{ - BEGIN_STUB_FUNCTION(); - - ASSERT(ARG_callFrame->codeBlock()->needsFullScopeChain()); - ARG_callFrame->scopeChain()->deref(); -} - -JSObject* Interpreter::cti_op_new_array(STUB_ARGS) -{ - BEGIN_STUB_FUNCTION(); - - ArgList argList(&ARG_callFrame->registers()[ARG_int1], ARG_int2); - return constructArray(ARG_callFrame, argList); -} - -JSValueEncodedAsPointer* Interpreter::cti_op_resolve(STUB_ARGS) -{ - BEGIN_STUB_FUNCTION(); - - CallFrame* callFrame = ARG_callFrame; - ScopeChainNode* scopeChain = callFrame->scopeChain(); - - ScopeChainIterator iter = scopeChain->begin(); - ScopeChainIterator end = scopeChain->end(); - ASSERT(iter != end); - - Identifier& ident = *ARG_id1; - do { - JSObject* o = *iter; - PropertySlot slot(o); - if (o->getPropertySlot(callFrame, ident, slot)) { - JSValuePtr result = slot.getValue(callFrame, ident); - CHECK_FOR_EXCEPTION_AT_END(); - return JSValuePtr::encode(result); - } - } while (++iter != end); - - CodeBlock* codeBlock = callFrame->codeBlock(); - unsigned vPCIndex = codeBlock->getBytecodeIndex(callFrame, STUB_RETURN_ADDRESS); - ARG_globalData->exception = createUndefinedVariableError(callFrame, ident, vPCIndex, codeBlock); - VM_THROW_EXCEPTION(); -} - -JSObject* Interpreter::cti_op_construct_JSConstruct(STUB_ARGS) -{ - BEGIN_STUB_FUNCTION(); - -#ifndef NDEBUG - ConstructData constructData; - ASSERT(asFunction(ARG_src1)->getConstructData(constructData) == ConstructTypeJS); -#endif - - Structure* structure; - if (ARG_src4.isObject()) - structure = asObject(ARG_src4)->inheritorID(); - else - structure = asFunction(ARG_src1)->m_scopeChain.node()->globalObject()->emptyObjectStructure(); - return new (ARG_globalData) JSObject(structure); -} - -JSValueEncodedAsPointer* Interpreter::cti_op_construct_NotJSConstruct(STUB_ARGS) -{ - BEGIN_STUB_FUNCTION(); - - CallFrame* callFrame = ARG_callFrame; - - JSValuePtr constrVal = ARG_src1; - int argCount = ARG_int3; - int thisRegister = ARG_int5; - - ConstructData constructData; - ConstructType constructType = constrVal.getConstructData(constructData); - - if (constructType == ConstructTypeHost) { - ArgList argList(callFrame->registers() + thisRegister + 1, argCount - 1); - - JSValuePtr returnValue; - { - SamplingTool::HostCallRecord callRecord(CTI_SAMPLER); - returnValue = constructData.native.function(callFrame, asObject(constrVal), argList); - } - CHECK_FOR_EXCEPTION(); - - return JSValuePtr::encode(returnValue); - } - - ASSERT(constructType == ConstructTypeNone); - - CodeBlock* codeBlock = callFrame->codeBlock(); - unsigned vPCIndex = codeBlock->getBytecodeIndex(callFrame, STUB_RETURN_ADDRESS); - ARG_globalData->exception = createNotAConstructorError(callFrame, constrVal, vPCIndex, codeBlock); - VM_THROW_EXCEPTION(); -} - -JSValueEncodedAsPointer* Interpreter::cti_op_get_by_val(STUB_ARGS) -{ - BEGIN_STUB_FUNCTION(); - - CallFrame* callFrame = ARG_callFrame; - Interpreter* interpreter = ARG_globalData->interpreter; - - JSValuePtr baseValue = ARG_src1; - JSValuePtr subscript = ARG_src2; - - JSValuePtr result; - - if (LIKELY(subscript.isUInt32Fast())) { - uint32_t i = subscript.getUInt32Fast(); - if (interpreter->isJSArray(baseValue)) { - JSArray* jsArray = asArray(baseValue); - if (jsArray->canGetIndex(i)) - result = jsArray->getIndex(i); - else - result = jsArray->JSArray::get(callFrame, i); - } else if (interpreter->isJSString(baseValue) && asString(baseValue)->canGetIndex(i)) - result = asString(baseValue)->getIndex(ARG_globalData, i); - else if (interpreter->isJSByteArray(baseValue) && asByteArray(baseValue)->canAccessIndex(i)) { - // All fast byte array accesses are safe from exceptions so return immediately to avoid exception checks. - ctiPatchCallByReturnAddress(STUB_RETURN_ADDRESS, reinterpret_cast(cti_op_get_by_val_byte_array)); - return JSValuePtr::encode(asByteArray(baseValue)->getIndex(callFrame, i)); - } else - result = baseValue.get(callFrame, i); - } else { - Identifier property(callFrame, subscript.toString(callFrame)); - result = baseValue.get(callFrame, property); - } - - CHECK_FOR_EXCEPTION_AT_END(); - return JSValuePtr::encode(result); -} - -JSValueEncodedAsPointer* Interpreter::cti_op_get_by_val_byte_array(STUB_ARGS) -{ - BEGIN_STUB_FUNCTION(); - - CallFrame* callFrame = ARG_callFrame; - Interpreter* interpreter = ARG_globalData->interpreter; - - JSValuePtr baseValue = ARG_src1; - JSValuePtr subscript = ARG_src2; - - JSValuePtr result; - - if (LIKELY(subscript.isUInt32Fast())) { - uint32_t i = subscript.getUInt32Fast(); - if (interpreter->isJSByteArray(baseValue) && asByteArray(baseValue)->canAccessIndex(i)) { - // All fast byte array accesses are safe from exceptions so return immediately to avoid exception checks. - return JSValuePtr::encode(asByteArray(baseValue)->getIndex(callFrame, i)); - } - - result = baseValue.get(callFrame, i); - if (!interpreter->isJSByteArray(baseValue)) - ctiPatchCallByReturnAddress(STUB_RETURN_ADDRESS, reinterpret_cast(cti_op_get_by_val)); - } else { - Identifier property(callFrame, subscript.toString(callFrame)); - result = baseValue.get(callFrame, property); - } - - CHECK_FOR_EXCEPTION_AT_END(); - return JSValuePtr::encode(result); -} - -VoidPtrPair Interpreter::cti_op_resolve_func(STUB_ARGS) -{ - BEGIN_STUB_FUNCTION(); - - CallFrame* callFrame = ARG_callFrame; - ScopeChainNode* scopeChain = callFrame->scopeChain(); - - ScopeChainIterator iter = scopeChain->begin(); - ScopeChainIterator end = scopeChain->end(); - - // FIXME: add scopeDepthIsZero optimization - - ASSERT(iter != end); - - Identifier& ident = *ARG_id1; - JSObject* base; - do { - base = *iter; - PropertySlot slot(base); - if (base->getPropertySlot(callFrame, ident, slot)) { - // ECMA 11.2.3 says that if we hit an activation the this value should be null. - // However, section 10.2.3 says that in the case where the value provided - // by the caller is null, the global object should be used. It also says - // that the section does not apply to internal functions, but for simplicity - // of implementation we use the global object anyway here. This guarantees - // that in host objects you always get a valid object for this. - // We also handle wrapper substitution for the global object at the same time. - JSObject* thisObj = base->toThisObject(callFrame); - JSValuePtr result = slot.getValue(callFrame, ident); - CHECK_FOR_EXCEPTION_AT_END(); - - RETURN_PAIR(thisObj, JSValuePtr::encode(result)); - } - ++iter; - } while (iter != end); - - CodeBlock* codeBlock = callFrame->codeBlock(); - unsigned vPCIndex = codeBlock->getBytecodeIndex(callFrame, STUB_RETURN_ADDRESS); - ARG_globalData->exception = createUndefinedVariableError(callFrame, ident, vPCIndex, codeBlock); - VM_THROW_EXCEPTION_2(); -} - -JSValueEncodedAsPointer* Interpreter::cti_op_sub(STUB_ARGS) -{ - BEGIN_STUB_FUNCTION(); - - JSValuePtr src1 = ARG_src1; - JSValuePtr src2 = ARG_src2; - - double left; - double right; - if (src1.getNumber(left) && src2.getNumber(right)) - return JSValuePtr::encode(jsNumber(ARG_globalData, left - right)); - - CallFrame* callFrame = ARG_callFrame; - JSValuePtr result = jsNumber(ARG_globalData, src1.toNumber(callFrame) - src2.toNumber(callFrame)); - CHECK_FOR_EXCEPTION_AT_END(); - return JSValuePtr::encode(result); -} - -void Interpreter::cti_op_put_by_val(STUB_ARGS) -{ - BEGIN_STUB_FUNCTION(); - - CallFrame* callFrame = ARG_callFrame; - Interpreter* interpreter = ARG_globalData->interpreter; - - JSValuePtr baseValue = ARG_src1; - JSValuePtr subscript = ARG_src2; - JSValuePtr value = ARG_src3; - - if (LIKELY(subscript.isUInt32Fast())) { - uint32_t i = subscript.getUInt32Fast(); - if (interpreter->isJSArray(baseValue)) { - JSArray* jsArray = asArray(baseValue); - if (jsArray->canSetIndex(i)) - jsArray->setIndex(i, value); - else - jsArray->JSArray::put(callFrame, i, value); - } else if (interpreter->isJSByteArray(baseValue) && asByteArray(baseValue)->canAccessIndex(i)) { - JSByteArray* jsByteArray = asByteArray(baseValue); - ctiPatchCallByReturnAddress(STUB_RETURN_ADDRESS, reinterpret_cast(cti_op_put_by_val_byte_array)); - // All fast byte array accesses are safe from exceptions so return immediately to avoid exception checks. - if (value.isInt32Fast()) { - jsByteArray->setIndex(i, value.getInt32Fast()); - return; - } else { - double dValue = 0; - if (value.getNumber(dValue)) { - jsByteArray->setIndex(i, dValue); - return; - } - } - - baseValue.put(callFrame, i, value); - } else - baseValue.put(callFrame, i, value); - } else { - Identifier property(callFrame, subscript.toString(callFrame)); - if (!ARG_globalData->exception) { // Don't put to an object if toString threw an exception. - PutPropertySlot slot; - baseValue.put(callFrame, property, value, slot); - } - } - - CHECK_FOR_EXCEPTION_AT_END(); -} - -void Interpreter::cti_op_put_by_val_array(STUB_ARGS) -{ - BEGIN_STUB_FUNCTION(); - - CallFrame* callFrame = ARG_callFrame; - - JSValuePtr baseValue = ARG_src1; - int i = ARG_int2; - JSValuePtr value = ARG_src3; - - ASSERT(ARG_globalData->interpreter->isJSArray(baseValue)); - - if (LIKELY(i >= 0)) - asArray(baseValue)->JSArray::put(callFrame, i, value); - else { - // This should work since we're re-boxing an immediate unboxed in JIT code. - ASSERT(JSValuePtr::makeInt32Fast(i)); - Identifier property(callFrame, JSValuePtr::makeInt32Fast(i).toString(callFrame)); - // FIXME: can toString throw an exception here? - if (!ARG_globalData->exception) { // Don't put to an object if toString threw an exception. - PutPropertySlot slot; - baseValue.put(callFrame, property, value, slot); - } - } - - CHECK_FOR_EXCEPTION_AT_END(); -} - -void Interpreter::cti_op_put_by_val_byte_array(STUB_ARGS) -{ - BEGIN_STUB_FUNCTION(); - - CallFrame* callFrame = ARG_callFrame; - Interpreter* interpreter = ARG_globalData->interpreter; - - JSValuePtr baseValue = ARG_src1; - JSValuePtr subscript = ARG_src2; - JSValuePtr value = ARG_src3; - - if (LIKELY(subscript.isUInt32Fast())) { - uint32_t i = subscript.getUInt32Fast(); - if (interpreter->isJSByteArray(baseValue) && asByteArray(baseValue)->canAccessIndex(i)) { - JSByteArray* jsByteArray = asByteArray(baseValue); - - // All fast byte array accesses are safe from exceptions so return immediately to avoid exception checks. - if (value.isInt32Fast()) { - jsByteArray->setIndex(i, value.getInt32Fast()); - return; - } else { - double dValue = 0; - if (value.getNumber(dValue)) { - jsByteArray->setIndex(i, dValue); - return; - } - } - } - - if (!interpreter->isJSByteArray(baseValue)) - ctiPatchCallByReturnAddress(STUB_RETURN_ADDRESS, reinterpret_cast(cti_op_put_by_val)); - baseValue.put(callFrame, i, value); - } else { - Identifier property(callFrame, subscript.toString(callFrame)); - if (!ARG_globalData->exception) { // Don't put to an object if toString threw an exception. - PutPropertySlot slot; - baseValue.put(callFrame, property, value, slot); - } - } - - CHECK_FOR_EXCEPTION_AT_END(); -} - -JSValueEncodedAsPointer* Interpreter::cti_op_lesseq(STUB_ARGS) -{ - BEGIN_STUB_FUNCTION(); - - CallFrame* callFrame = ARG_callFrame; - JSValuePtr result = jsBoolean(jsLessEq(callFrame, ARG_src1, ARG_src2)); - CHECK_FOR_EXCEPTION_AT_END(); - return JSValuePtr::encode(result); -} - -int Interpreter::cti_op_loop_if_true(STUB_ARGS) -{ - BEGIN_STUB_FUNCTION(); - - JSValuePtr src1 = ARG_src1; - - CallFrame* callFrame = ARG_callFrame; - - bool result = src1.toBoolean(callFrame); - CHECK_FOR_EXCEPTION_AT_END(); - return result; -} - -JSValueEncodedAsPointer* Interpreter::cti_op_negate(STUB_ARGS) -{ - BEGIN_STUB_FUNCTION(); - - JSValuePtr src = ARG_src1; - - double v; - if (src.getNumber(v)) - return JSValuePtr::encode(jsNumber(ARG_globalData, -v)); - - CallFrame* callFrame = ARG_callFrame; - JSValuePtr result = jsNumber(ARG_globalData, -src.toNumber(callFrame)); - CHECK_FOR_EXCEPTION_AT_END(); - return JSValuePtr::encode(result); -} - -JSValueEncodedAsPointer* Interpreter::cti_op_resolve_base(STUB_ARGS) -{ - BEGIN_STUB_FUNCTION(); - - return JSValuePtr::encode(inlineResolveBase(ARG_callFrame, *ARG_id1, ARG_callFrame->scopeChain())); -} - -JSValueEncodedAsPointer* Interpreter::cti_op_resolve_skip(STUB_ARGS) -{ - BEGIN_STUB_FUNCTION(); - - CallFrame* callFrame = ARG_callFrame; - ScopeChainNode* scopeChain = callFrame->scopeChain(); - - int skip = ARG_int2; - - ScopeChainIterator iter = scopeChain->begin(); - ScopeChainIterator end = scopeChain->end(); - ASSERT(iter != end); - while (skip--) { - ++iter; - ASSERT(iter != end); - } - Identifier& ident = *ARG_id1; - do { - JSObject* o = *iter; - PropertySlot slot(o); - if (o->getPropertySlot(callFrame, ident, slot)) { - JSValuePtr result = slot.getValue(callFrame, ident); - CHECK_FOR_EXCEPTION_AT_END(); - return JSValuePtr::encode(result); - } - } while (++iter != end); - - CodeBlock* codeBlock = callFrame->codeBlock(); - unsigned vPCIndex = codeBlock->getBytecodeIndex(callFrame, STUB_RETURN_ADDRESS); - ARG_globalData->exception = createUndefinedVariableError(callFrame, ident, vPCIndex, codeBlock); - VM_THROW_EXCEPTION(); -} - -JSValueEncodedAsPointer* Interpreter::cti_op_resolve_global(STUB_ARGS) -{ - BEGIN_STUB_FUNCTION(); - - CallFrame* callFrame = ARG_callFrame; - JSGlobalObject* globalObject = asGlobalObject(ARG_src1); - Identifier& ident = *ARG_id2; - unsigned globalResolveInfoIndex = ARG_int3; - ASSERT(globalObject->isGlobalObject()); - - PropertySlot slot(globalObject); - if (globalObject->getPropertySlot(callFrame, ident, slot)) { - JSValuePtr result = slot.getValue(callFrame, ident); - if (slot.isCacheable() && !globalObject->structure()->isDictionary()) { - GlobalResolveInfo& globalResolveInfo = callFrame->codeBlock()->globalResolveInfo(globalResolveInfoIndex); - if (globalResolveInfo.structure) - globalResolveInfo.structure->deref(); - globalObject->structure()->ref(); - globalResolveInfo.structure = globalObject->structure(); - globalResolveInfo.offset = slot.cachedOffset(); - return JSValuePtr::encode(result); - } - - CHECK_FOR_EXCEPTION_AT_END(); - return JSValuePtr::encode(result); - } - - unsigned vPCIndex = callFrame->codeBlock()->getBytecodeIndex(callFrame, STUB_RETURN_ADDRESS); - ARG_globalData->exception = createUndefinedVariableError(callFrame, ident, vPCIndex, callFrame->codeBlock()); - VM_THROW_EXCEPTION(); -} - -JSValueEncodedAsPointer* Interpreter::cti_op_div(STUB_ARGS) -{ - BEGIN_STUB_FUNCTION(); - - JSValuePtr src1 = ARG_src1; - JSValuePtr src2 = ARG_src2; - - double left; - double right; - if (src1.getNumber(left) && src2.getNumber(right)) - return JSValuePtr::encode(jsNumber(ARG_globalData, left / right)); - - CallFrame* callFrame = ARG_callFrame; - JSValuePtr result = jsNumber(ARG_globalData, src1.toNumber(callFrame) / src2.toNumber(callFrame)); - CHECK_FOR_EXCEPTION_AT_END(); - return JSValuePtr::encode(result); -} - -JSValueEncodedAsPointer* Interpreter::cti_op_pre_dec(STUB_ARGS) -{ - BEGIN_STUB_FUNCTION(); - - JSValuePtr v = ARG_src1; - - CallFrame* callFrame = ARG_callFrame; - JSValuePtr result = jsNumber(ARG_globalData, v.toNumber(callFrame) - 1); - CHECK_FOR_EXCEPTION_AT_END(); - return JSValuePtr::encode(result); -} - -int Interpreter::cti_op_jless(STUB_ARGS) -{ - BEGIN_STUB_FUNCTION(); - - JSValuePtr src1 = ARG_src1; - JSValuePtr src2 = ARG_src2; - CallFrame* callFrame = ARG_callFrame; - - bool result = jsLess(callFrame, src1, src2); - CHECK_FOR_EXCEPTION_AT_END(); - return result; -} - -JSValueEncodedAsPointer* Interpreter::cti_op_not(STUB_ARGS) -{ - BEGIN_STUB_FUNCTION(); - - JSValuePtr src = ARG_src1; - - CallFrame* callFrame = ARG_callFrame; - - JSValuePtr result = jsBoolean(!src.toBoolean(callFrame)); - CHECK_FOR_EXCEPTION_AT_END(); - return JSValuePtr::encode(result); -} - -int Interpreter::cti_op_jtrue(STUB_ARGS) -{ - BEGIN_STUB_FUNCTION(); - - JSValuePtr src1 = ARG_src1; - - CallFrame* callFrame = ARG_callFrame; - - bool result = src1.toBoolean(callFrame); - CHECK_FOR_EXCEPTION_AT_END(); - return result; -} - -VoidPtrPair Interpreter::cti_op_post_inc(STUB_ARGS) -{ - BEGIN_STUB_FUNCTION(); - - JSValuePtr v = ARG_src1; - - CallFrame* callFrame = ARG_callFrame; - - JSValuePtr number = v.toJSNumber(callFrame); - CHECK_FOR_EXCEPTION_AT_END(); - - RETURN_PAIR(JSValuePtr::encode(number), JSValuePtr::encode(jsNumber(ARG_globalData, number.uncheckedGetNumber() + 1))); -} - -JSValueEncodedAsPointer* Interpreter::cti_op_eq(STUB_ARGS) -{ - BEGIN_STUB_FUNCTION(); - - JSValuePtr src1 = ARG_src1; - JSValuePtr src2 = ARG_src2; - - CallFrame* callFrame = ARG_callFrame; - - ASSERT(!JSValuePtr::areBothInt32Fast(src1, src2)); - JSValuePtr result = jsBoolean(JSValuePtr::equalSlowCaseInline(callFrame, src1, src2)); - CHECK_FOR_EXCEPTION_AT_END(); - return JSValuePtr::encode(result); -} - -JSValueEncodedAsPointer* Interpreter::cti_op_lshift(STUB_ARGS) -{ - BEGIN_STUB_FUNCTION(); - - JSValuePtr val = ARG_src1; - JSValuePtr shift = ARG_src2; - - int32_t left; - uint32_t right; - if (JSValuePtr::areBothInt32Fast(val, shift)) - return JSValuePtr::encode(jsNumber(ARG_globalData, val.getInt32Fast() << (shift.getInt32Fast() & 0x1f))); - if (val.numberToInt32(left) && shift.numberToUInt32(right)) - return JSValuePtr::encode(jsNumber(ARG_globalData, left << (right & 0x1f))); - - CallFrame* callFrame = ARG_callFrame; - JSValuePtr result = jsNumber(ARG_globalData, (val.toInt32(callFrame)) << (shift.toUInt32(callFrame) & 0x1f)); - CHECK_FOR_EXCEPTION_AT_END(); - return JSValuePtr::encode(result); -} - -JSValueEncodedAsPointer* Interpreter::cti_op_bitand(STUB_ARGS) -{ - BEGIN_STUB_FUNCTION(); - - JSValuePtr src1 = ARG_src1; - JSValuePtr src2 = ARG_src2; - - int32_t left; - int32_t right; - if (src1.numberToInt32(left) && src2.numberToInt32(right)) - return JSValuePtr::encode(jsNumber(ARG_globalData, left & right)); - - CallFrame* callFrame = ARG_callFrame; - JSValuePtr result = jsNumber(ARG_globalData, src1.toInt32(callFrame) & src2.toInt32(callFrame)); - CHECK_FOR_EXCEPTION_AT_END(); - return JSValuePtr::encode(result); -} - -JSValueEncodedAsPointer* Interpreter::cti_op_rshift(STUB_ARGS) -{ - BEGIN_STUB_FUNCTION(); - - JSValuePtr val = ARG_src1; - JSValuePtr shift = ARG_src2; - - int32_t left; - uint32_t right; - if (JSFastMath::canDoFastRshift(val, shift)) - return JSValuePtr::encode(JSFastMath::rightShiftImmediateNumbers(val, shift)); - if (val.numberToInt32(left) && shift.numberToUInt32(right)) - return JSValuePtr::encode(jsNumber(ARG_globalData, left >> (right & 0x1f))); - - CallFrame* callFrame = ARG_callFrame; - JSValuePtr result = jsNumber(ARG_globalData, (val.toInt32(callFrame)) >> (shift.toUInt32(callFrame) & 0x1f)); - CHECK_FOR_EXCEPTION_AT_END(); - return JSValuePtr::encode(result); -} - -JSValueEncodedAsPointer* Interpreter::cti_op_bitnot(STUB_ARGS) -{ - BEGIN_STUB_FUNCTION(); - - JSValuePtr src = ARG_src1; - - int value; - if (src.numberToInt32(value)) - return JSValuePtr::encode(jsNumber(ARG_globalData, ~value)); - - CallFrame* callFrame = ARG_callFrame; - JSValuePtr result = jsNumber(ARG_globalData, ~src.toInt32(callFrame)); - CHECK_FOR_EXCEPTION_AT_END(); - return JSValuePtr::encode(result); -} - -VoidPtrPair Interpreter::cti_op_resolve_with_base(STUB_ARGS) -{ - BEGIN_STUB_FUNCTION(); - - CallFrame* callFrame = ARG_callFrame; - ScopeChainNode* scopeChain = callFrame->scopeChain(); - - ScopeChainIterator iter = scopeChain->begin(); - ScopeChainIterator end = scopeChain->end(); - - // FIXME: add scopeDepthIsZero optimization - - ASSERT(iter != end); - - Identifier& ident = *ARG_id1; - JSObject* base; - do { - base = *iter; - PropertySlot slot(base); - if (base->getPropertySlot(callFrame, ident, slot)) { - JSValuePtr result = slot.getValue(callFrame, ident); - CHECK_FOR_EXCEPTION_AT_END(); - - RETURN_PAIR(base, JSValuePtr::encode(result)); - } - ++iter; - } while (iter != end); - - CodeBlock* codeBlock = callFrame->codeBlock(); - unsigned vPCIndex = codeBlock->getBytecodeIndex(callFrame, STUB_RETURN_ADDRESS); - ARG_globalData->exception = createUndefinedVariableError(callFrame, ident, vPCIndex, codeBlock); - VM_THROW_EXCEPTION_2(); -} - -JSObject* Interpreter::cti_op_new_func_exp(STUB_ARGS) -{ - BEGIN_STUB_FUNCTION(); - - return ARG_funcexp1->makeFunction(ARG_callFrame, ARG_callFrame->scopeChain()); -} - -JSValueEncodedAsPointer* Interpreter::cti_op_mod(STUB_ARGS) -{ - BEGIN_STUB_FUNCTION(); - - JSValuePtr dividendValue = ARG_src1; - JSValuePtr divisorValue = ARG_src2; - - CallFrame* callFrame = ARG_callFrame; - double d = dividendValue.toNumber(callFrame); - JSValuePtr result = jsNumber(ARG_globalData, fmod(d, divisorValue.toNumber(callFrame))); - CHECK_FOR_EXCEPTION_AT_END(); - return JSValuePtr::encode(result); -} - -JSValueEncodedAsPointer* Interpreter::cti_op_less(STUB_ARGS) -{ - BEGIN_STUB_FUNCTION(); - - CallFrame* callFrame = ARG_callFrame; - JSValuePtr result = jsBoolean(jsLess(callFrame, ARG_src1, ARG_src2)); - CHECK_FOR_EXCEPTION_AT_END(); - return JSValuePtr::encode(result); -} - -JSValueEncodedAsPointer* Interpreter::cti_op_neq(STUB_ARGS) -{ - BEGIN_STUB_FUNCTION(); - - JSValuePtr src1 = ARG_src1; - JSValuePtr src2 = ARG_src2; - - ASSERT(!JSValuePtr::areBothInt32Fast(src1, src2)); - - CallFrame* callFrame = ARG_callFrame; - JSValuePtr result = jsBoolean(!JSValuePtr::equalSlowCaseInline(callFrame, src1, src2)); - CHECK_FOR_EXCEPTION_AT_END(); - return JSValuePtr::encode(result); -} - -VoidPtrPair Interpreter::cti_op_post_dec(STUB_ARGS) -{ - BEGIN_STUB_FUNCTION(); - - JSValuePtr v = ARG_src1; - - CallFrame* callFrame = ARG_callFrame; - - JSValuePtr number = v.toJSNumber(callFrame); - CHECK_FOR_EXCEPTION_AT_END(); - - RETURN_PAIR(JSValuePtr::encode(number), JSValuePtr::encode(jsNumber(ARG_globalData, number.uncheckedGetNumber() - 1))); -} - -JSValueEncodedAsPointer* Interpreter::cti_op_urshift(STUB_ARGS) -{ - BEGIN_STUB_FUNCTION(); - - JSValuePtr val = ARG_src1; - JSValuePtr shift = ARG_src2; - - CallFrame* callFrame = ARG_callFrame; - - if (JSFastMath::canDoFastUrshift(val, shift)) - return JSValuePtr::encode(JSFastMath::rightShiftImmediateNumbers(val, shift)); - else { - JSValuePtr result = jsNumber(ARG_globalData, (val.toUInt32(callFrame)) >> (shift.toUInt32(callFrame) & 0x1f)); - CHECK_FOR_EXCEPTION_AT_END(); - return JSValuePtr::encode(result); - } -} - -JSValueEncodedAsPointer* Interpreter::cti_op_bitxor(STUB_ARGS) -{ - BEGIN_STUB_FUNCTION(); - - JSValuePtr src1 = ARG_src1; - JSValuePtr src2 = ARG_src2; - - CallFrame* callFrame = ARG_callFrame; - - JSValuePtr result = jsNumber(ARG_globalData, src1.toInt32(callFrame) ^ src2.toInt32(callFrame)); - CHECK_FOR_EXCEPTION_AT_END(); - return JSValuePtr::encode(result); -} - -JSObject* Interpreter::cti_op_new_regexp(STUB_ARGS) -{ - BEGIN_STUB_FUNCTION(); - - return new (ARG_globalData) RegExpObject(ARG_callFrame->lexicalGlobalObject()->regExpStructure(), ARG_regexp1); -} - -JSValueEncodedAsPointer* Interpreter::cti_op_bitor(STUB_ARGS) -{ - BEGIN_STUB_FUNCTION(); - - JSValuePtr src1 = ARG_src1; - JSValuePtr src2 = ARG_src2; - - CallFrame* callFrame = ARG_callFrame; - - JSValuePtr result = jsNumber(ARG_globalData, src1.toInt32(callFrame) | src2.toInt32(callFrame)); - CHECK_FOR_EXCEPTION_AT_END(); - return JSValuePtr::encode(result); -} - -JSValueEncodedAsPointer* Interpreter::cti_op_call_eval(STUB_ARGS) -{ - BEGIN_STUB_FUNCTION(); - - CallFrame* callFrame = ARG_callFrame; - RegisterFile* registerFile = ARG_registerFile; - - Interpreter* interpreter = ARG_globalData->interpreter; - - JSValuePtr funcVal = ARG_src1; - int registerOffset = ARG_int2; - int argCount = ARG_int3; - - Register* newCallFrame = callFrame->registers() + registerOffset; - Register* argv = newCallFrame - RegisterFile::CallFrameHeaderSize - argCount; - JSValuePtr thisValue = argv[0].jsValue(callFrame); - JSGlobalObject* globalObject = callFrame->scopeChain()->globalObject(); - - if (thisValue == globalObject && funcVal == globalObject->evalFunction()) { - JSValuePtr exceptionValue = noValue(); - JSValuePtr result = interpreter->callEval(callFrame, registerFile, argv, argCount, registerOffset, exceptionValue); - if (UNLIKELY(exceptionValue != noValue())) { - ARG_globalData->exception = exceptionValue; - VM_THROW_EXCEPTION_AT_END(); - } - return JSValuePtr::encode(result); - } - - return JSValuePtr::encode(jsImpossibleValue()); -} - -JSValueEncodedAsPointer* Interpreter::cti_op_throw(STUB_ARGS) -{ - BEGIN_STUB_FUNCTION(); - - CallFrame* callFrame = ARG_callFrame; - CodeBlock* codeBlock = callFrame->codeBlock(); - - unsigned vPCIndex = codeBlock->getBytecodeIndex(callFrame, STUB_RETURN_ADDRESS); - - JSValuePtr exceptionValue = ARG_src1; - ASSERT(exceptionValue); - - HandlerInfo* handler = ARG_globalData->interpreter->throwException(callFrame, exceptionValue, vPCIndex, true); - - if (!handler) { - *ARG_exception = exceptionValue; - return JSValuePtr::encode(jsNull()); - } - - ARG_setCallFrame(callFrame); - void* catchRoutine = handler->nativeCode; - ASSERT(catchRoutine); - STUB_SET_RETURN_ADDRESS(catchRoutine); - return JSValuePtr::encode(exceptionValue); -} - -JSPropertyNameIterator* Interpreter::cti_op_get_pnames(STUB_ARGS) -{ - BEGIN_STUB_FUNCTION(); - - return JSPropertyNameIterator::create(ARG_callFrame, ARG_src1); -} - -JSValueEncodedAsPointer* Interpreter::cti_op_next_pname(STUB_ARGS) -{ - BEGIN_STUB_FUNCTION(); - - JSPropertyNameIterator* it = ARG_pni1; - JSValuePtr temp = it->next(ARG_callFrame); - if (!temp) - it->invalidate(); - return JSValuePtr::encode(temp); -} - -JSObject* Interpreter::cti_op_push_scope(STUB_ARGS) -{ - BEGIN_STUB_FUNCTION(); - - JSObject* o = ARG_src1.toObject(ARG_callFrame); - CHECK_FOR_EXCEPTION(); - ARG_callFrame->setScopeChain(ARG_callFrame->scopeChain()->push(o)); - return o; -} - -void Interpreter::cti_op_pop_scope(STUB_ARGS) -{ - BEGIN_STUB_FUNCTION(); - - ARG_callFrame->setScopeChain(ARG_callFrame->scopeChain()->pop()); -} - -JSValueEncodedAsPointer* Interpreter::cti_op_typeof(STUB_ARGS) -{ - BEGIN_STUB_FUNCTION(); - - return JSValuePtr::encode(jsTypeStringForValue(ARG_callFrame, ARG_src1)); -} - -JSValueEncodedAsPointer* Interpreter::cti_op_is_undefined(STUB_ARGS) -{ - BEGIN_STUB_FUNCTION(); - - JSValuePtr v = ARG_src1; - return JSValuePtr::encode(jsBoolean(v.isCell() ? v.asCell()->structure()->typeInfo().masqueradesAsUndefined() : v.isUndefined())); -} - -JSValueEncodedAsPointer* Interpreter::cti_op_is_boolean(STUB_ARGS) -{ - BEGIN_STUB_FUNCTION(); - - return JSValuePtr::encode(jsBoolean(ARG_src1.isBoolean())); -} - -JSValueEncodedAsPointer* Interpreter::cti_op_is_number(STUB_ARGS) -{ - BEGIN_STUB_FUNCTION(); - - return JSValuePtr::encode(jsBoolean(ARG_src1.isNumber())); -} - -JSValueEncodedAsPointer* Interpreter::cti_op_is_string(STUB_ARGS) -{ - BEGIN_STUB_FUNCTION(); - - return JSValuePtr::encode(jsBoolean(ARG_globalData->interpreter->isJSString(ARG_src1))); -} - -JSValueEncodedAsPointer* Interpreter::cti_op_is_object(STUB_ARGS) -{ - BEGIN_STUB_FUNCTION(); - - return JSValuePtr::encode(jsBoolean(jsIsObjectType(ARG_src1))); -} - -JSValueEncodedAsPointer* Interpreter::cti_op_is_function(STUB_ARGS) -{ - BEGIN_STUB_FUNCTION(); - - return JSValuePtr::encode(jsBoolean(jsIsFunctionType(ARG_src1))); -} - -JSValueEncodedAsPointer* Interpreter::cti_op_stricteq(STUB_ARGS) -{ - BEGIN_STUB_FUNCTION(); - - JSValuePtr src1 = ARG_src1; - JSValuePtr src2 = ARG_src2; - - return JSValuePtr::encode(jsBoolean(JSValuePtr::strictEqual(src1, src2))); -} - -JSValueEncodedAsPointer* Interpreter::cti_op_nstricteq(STUB_ARGS) -{ - BEGIN_STUB_FUNCTION(); - - JSValuePtr src1 = ARG_src1; - JSValuePtr src2 = ARG_src2; - - return JSValuePtr::encode(jsBoolean(!JSValuePtr::strictEqual(src1, src2))); -} - -JSValueEncodedAsPointer* Interpreter::cti_op_to_jsnumber(STUB_ARGS) -{ - BEGIN_STUB_FUNCTION(); - - JSValuePtr src = ARG_src1; - CallFrame* callFrame = ARG_callFrame; - - JSValuePtr result = src.toJSNumber(callFrame); - CHECK_FOR_EXCEPTION_AT_END(); - return JSValuePtr::encode(result); -} - -JSValueEncodedAsPointer* Interpreter::cti_op_in(STUB_ARGS) -{ - BEGIN_STUB_FUNCTION(); - - CallFrame* callFrame = ARG_callFrame; - JSValuePtr baseVal = ARG_src2; - - if (!baseVal.isObject()) { - CallFrame* callFrame = ARG_callFrame; - CodeBlock* codeBlock = callFrame->codeBlock(); - unsigned vPCIndex = codeBlock->getBytecodeIndex(callFrame, STUB_RETURN_ADDRESS); - ARG_globalData->exception = createInvalidParamError(callFrame, "in", baseVal, vPCIndex, codeBlock); - VM_THROW_EXCEPTION(); - } - - JSValuePtr propName = ARG_src1; - JSObject* baseObj = asObject(baseVal); - - uint32_t i; - if (propName.getUInt32(i)) - return JSValuePtr::encode(jsBoolean(baseObj->hasProperty(callFrame, i))); - - Identifier property(callFrame, propName.toString(callFrame)); - CHECK_FOR_EXCEPTION(); - return JSValuePtr::encode(jsBoolean(baseObj->hasProperty(callFrame, property))); -} - -JSObject* Interpreter::cti_op_push_new_scope(STUB_ARGS) -{ - BEGIN_STUB_FUNCTION(); - - JSObject* scope = new (ARG_globalData) JSStaticScopeObject(ARG_callFrame, *ARG_id1, ARG_src2, DontDelete); - - CallFrame* callFrame = ARG_callFrame; - callFrame->setScopeChain(callFrame->scopeChain()->push(scope)); - return scope; -} - -void Interpreter::cti_op_jmp_scopes(STUB_ARGS) -{ - BEGIN_STUB_FUNCTION(); - - unsigned count = ARG_int1; - CallFrame* callFrame = ARG_callFrame; - - ScopeChainNode* tmp = callFrame->scopeChain(); - while (count--) - tmp = tmp->pop(); - callFrame->setScopeChain(tmp); -} - -void Interpreter::cti_op_put_by_index(STUB_ARGS) -{ - BEGIN_STUB_FUNCTION(); - - CallFrame* callFrame = ARG_callFrame; - unsigned property = ARG_int2; - - ARG_src1.put(callFrame, property, ARG_src3); -} - -void* Interpreter::cti_op_switch_imm(STUB_ARGS) -{ - BEGIN_STUB_FUNCTION(); - - JSValuePtr scrutinee = ARG_src1; - unsigned tableIndex = ARG_int2; - CallFrame* callFrame = ARG_callFrame; - CodeBlock* codeBlock = callFrame->codeBlock(); - - if (scrutinee.isInt32Fast()) - return codeBlock->immediateSwitchJumpTable(tableIndex).ctiForValue(scrutinee.getInt32Fast()); - else { - int32_t value; - if (scrutinee.numberToInt32(value)) - return codeBlock->immediateSwitchJumpTable(tableIndex).ctiForValue(value); - else - return codeBlock->immediateSwitchJumpTable(tableIndex).ctiDefault; - } -} - -void* Interpreter::cti_op_switch_char(STUB_ARGS) -{ - BEGIN_STUB_FUNCTION(); - - JSValuePtr scrutinee = ARG_src1; - unsigned tableIndex = ARG_int2; - CallFrame* callFrame = ARG_callFrame; - CodeBlock* codeBlock = callFrame->codeBlock(); - - void* result = codeBlock->characterSwitchJumpTable(tableIndex).ctiDefault; - - if (scrutinee.isString()) { - UString::Rep* value = asString(scrutinee)->value().rep(); - if (value->size() == 1) - result = codeBlock->characterSwitchJumpTable(tableIndex).ctiForValue(value->data()[0]); - } - - return result; -} - -void* Interpreter::cti_op_switch_string(STUB_ARGS) -{ - BEGIN_STUB_FUNCTION(); - - JSValuePtr scrutinee = ARG_src1; - unsigned tableIndex = ARG_int2; - CallFrame* callFrame = ARG_callFrame; - CodeBlock* codeBlock = callFrame->codeBlock(); - - void* result = codeBlock->stringSwitchJumpTable(tableIndex).ctiDefault; - - if (scrutinee.isString()) { - UString::Rep* value = asString(scrutinee)->value().rep(); - result = codeBlock->stringSwitchJumpTable(tableIndex).ctiForValue(value); - } - - return result; -} - -JSValueEncodedAsPointer* Interpreter::cti_op_del_by_val(STUB_ARGS) -{ - BEGIN_STUB_FUNCTION(); - - CallFrame* callFrame = ARG_callFrame; - - JSValuePtr baseValue = ARG_src1; - JSObject* baseObj = baseValue.toObject(callFrame); // may throw - - JSValuePtr subscript = ARG_src2; - JSValuePtr result; - uint32_t i; - if (subscript.getUInt32(i)) - result = jsBoolean(baseObj->deleteProperty(callFrame, i)); - else { - CHECK_FOR_EXCEPTION(); - Identifier property(callFrame, subscript.toString(callFrame)); - CHECK_FOR_EXCEPTION(); - result = jsBoolean(baseObj->deleteProperty(callFrame, property)); - } - - CHECK_FOR_EXCEPTION_AT_END(); - return JSValuePtr::encode(result); -} - -void Interpreter::cti_op_put_getter(STUB_ARGS) -{ - BEGIN_STUB_FUNCTION(); - - CallFrame* callFrame = ARG_callFrame; - - ASSERT(ARG_src1.isObject()); - JSObject* baseObj = asObject(ARG_src1); - ASSERT(ARG_src3.isObject()); - baseObj->defineGetter(callFrame, *ARG_id2, asObject(ARG_src3)); -} - -void Interpreter::cti_op_put_setter(STUB_ARGS) -{ - BEGIN_STUB_FUNCTION(); - - CallFrame* callFrame = ARG_callFrame; - - ASSERT(ARG_src1.isObject()); - JSObject* baseObj = asObject(ARG_src1); - ASSERT(ARG_src3.isObject()); - baseObj->defineSetter(callFrame, *ARG_id2, asObject(ARG_src3)); -} - -JSObject* Interpreter::cti_op_new_error(STUB_ARGS) -{ - BEGIN_STUB_FUNCTION(); - - CallFrame* callFrame = ARG_callFrame; - CodeBlock* codeBlock = callFrame->codeBlock(); - unsigned type = ARG_int1; - JSValuePtr message = ARG_src2; - unsigned bytecodeOffset = ARG_int3; - - unsigned lineNumber = codeBlock->lineNumberForBytecodeOffset(callFrame, bytecodeOffset); - return Error::create(callFrame, static_cast(type), message.toString(callFrame), lineNumber, codeBlock->ownerNode()->sourceID(), codeBlock->ownerNode()->sourceURL()); -} - -void Interpreter::cti_op_debug(STUB_ARGS) -{ - BEGIN_STUB_FUNCTION(); - - CallFrame* callFrame = ARG_callFrame; - - int debugHookID = ARG_int1; - int firstLine = ARG_int2; - int lastLine = ARG_int3; - - ARG_globalData->interpreter->debug(callFrame, static_cast(debugHookID), firstLine, lastLine); -} - -JSValueEncodedAsPointer* Interpreter::cti_vm_throw(STUB_ARGS) -{ - BEGIN_STUB_FUNCTION(); - - CallFrame* callFrame = ARG_callFrame; - CodeBlock* codeBlock = callFrame->codeBlock(); - JSGlobalData* globalData = ARG_globalData; - - unsigned vPCIndex = codeBlock->getBytecodeIndex(callFrame, globalData->exceptionLocation); - - JSValuePtr exceptionValue = globalData->exception; - ASSERT(exceptionValue); - globalData->exception = noValue(); - - HandlerInfo* handler = globalData->interpreter->throwException(callFrame, exceptionValue, vPCIndex, false); - - if (!handler) { - *ARG_exception = exceptionValue; - return JSValuePtr::encode(jsNull()); - } - - ARG_setCallFrame(callFrame); - void* catchRoutine = handler->nativeCode; - ASSERT(catchRoutine); - STUB_SET_RETURN_ADDRESS(catchRoutine); - return JSValuePtr::encode(exceptionValue); -} - -#undef STUB_RETURN_ADDRESS -#undef STUB_SET_RETURN_ADDRESS -#undef BEGIN_STUB_FUNCTION -#undef CHECK_FOR_EXCEPTION -#undef CHECK_FOR_EXCEPTION_AT_END -#undef CHECK_FOR_EXCEPTION_VOID -#undef VM_THROW_EXCEPTION -#undef VM_THROW_EXCEPTION_2 -#undef VM_THROW_EXCEPTION_AT_END - -#endif // ENABLE(JIT) - } // namespace JSC