/*
- * Copyright (C) 2008, 2009 Apple Inc. All rights reserved.
+ * Copyright (C) 2008, 2009, 2010 Apple Inc. All rights reserved.
* Copyright (C) 2008 Cameron Zwarich <cwzwarich@uwaterloo.ca>
*
* Redistribution and use in source and binary forms, with or without
#include "CallFrame.h"
#include "CallFrameClosure.h"
#include "CodeBlock.h"
-#include "Collector.h"
+#include "Heap.h"
#include "Debugger.h"
#include "DebuggerCallFrame.h"
+#include "ErrorInstance.h"
#include "EvalCodeCache.h"
#include "ExceptionHelpers.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 "RegExpPrototype.h"
#include "Register.h"
#include "SamplingTool.h"
+#include "StrictEvalActivation.h"
+#include "StrongInlines.h"
+#include "UStringConcatenate.h"
+#include <limits.h>
#include <stdio.h>
#include <wtf/Threading.h>
+#include <wtf/text/StringBuilder.h>
#if ENABLE(JIT)
#include "JIT.h"
#endif
+#define WTF_USE_GCC_COMPUTED_GOTO_WORKAROUND ((ENABLE(COMPUTED_GOTO_CLASSIC_INTERPRETER) || ENABLE(LLINT)) && !defined(__llvm__))
+
using namespace std;
namespace JSC {
-static ALWAYS_INLINE unsigned bytecodeOffsetForPC(CallFrame* callFrame, CodeBlock* codeBlock, void* pc)
-{
-#if ENABLE(JIT)
- return codeBlock->getBytecodeIndex(callFrame, ReturnAddressPtr(pc));
-#else
- UNUSED_PARAM(callFrame);
- return static_cast<Instruction*>(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();
+ return sc->localDepth();
+}
+
+#if ENABLE(CLASSIC_INTERPRETER)
+static NEVER_INLINE JSValue concatenateStrings(ExecState* exec, Register* strings, unsigned count)
+{
+ return jsString(exec, strings, count);
}
-#if USE(INTERPRETER)
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();
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)) {
JSValue result = slot.getValue(callFrame, ident);
exceptionValue = callFrame->globalData().exception;
if (exceptionValue)
return false;
- callFrame->r(dst) = JSValue(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;
}
{
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)) {
JSValue result = slot.getValue(callFrame, ident);
exceptionValue = callFrame->globalData().exception;
if (exceptionValue)
return false;
- callFrame->r(dst) = JSValue(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, JSValue& exceptionValue)
{
- int dst = (vPC + 1)->u.operand;
- JSGlobalObject* globalObject = static_cast<JSGlobalObject*>((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->r(dst) = JSValue(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)) {
JSValue result = slot.getValue(callFrame, ident);
- if (slot.isCacheable() && !globalObject->structure()->isUncacheableDictionary() && slot.slotBase() == globalObject) {
- if (vPC[4].u.structure)
- vPC[4].u.structure->deref();
- globalObject->structure()->ref();
- vPC[4] = globalObject->structure();
- vPC[5] = slot.cachedOffset();
- callFrame->r(dst) = JSValue(result);
+ 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->r(dst) = JSValue(result);
+ callFrame->uncheckedR(dst) = JSValue(result);
return true;
}
- exceptionValue = createUndefinedVariableError(callFrame, ident, vPC - codeBlock->instructions().begin(), codeBlock);
+ exceptionValue = createUndefinedVariableError(callFrame, ident);
+ return false;
+}
+
+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 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--) {
+ 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;
+ }
+
+ 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->r(dst) = JSValue(JSC::resolveBase(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, 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();
Identifier& ident = codeBlock->identifier(property);
JSObject* base;
do {
- base = *iter;
+ base = iter->get();
PropertySlot slot(base);
if (base->getPropertySlot(callFrame, ident, slot)) {
JSValue result = slot.getValue(callFrame, ident);
exceptionValue = callFrame->globalData().exception;
if (exceptionValue)
return false;
- callFrame->r(propDst) = JSValue(result);
- callFrame->r(baseDst) = JSValue(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, JSValue& 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();
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);
+ if (base->getPropertySlot(callFrame, ident, slot)) {
JSValue result = slot.getValue(callFrame, ident);
exceptionValue = callFrame->globalData().exception;
if (exceptionValue)
return false;
-
- callFrame->r(baseDst) = JSValue(thisObj);
- callFrame->r(funcDst) = JSValue(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;
}
-#endif // USE(INTERPRETER)
+#endif // ENABLE(CLASSIC_INTERPRETER)
-ALWAYS_INLINE CallFrame* Interpreter::slideRegisterWindowForCall(CodeBlock* newCodeBlock, RegisterFile* registerFile, CallFrame* callFrame, size_t registerOffset, int argc)
+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;
}
-#if USE(INTERPRETER)
-static NEVER_INLINE bool isInvalidParamForIn(CallFrame* callFrame, CodeBlock* codeBlock, const Instruction* vPC, JSValue value, JSValue& exceptionData)
+#if ENABLE(CLASSIC_INTERPRETER)
+static NEVER_INLINE bool isInvalidParamForIn(CallFrame* callFrame, JSValue value, JSValue& exceptionData)
{
if (value.isObject())
return false;
- exceptionData = createInvalidParamError(callFrame, "in" , value, vPC - codeBlock->instructions().begin(), codeBlock);
+ exceptionData = createInvalidParamError(callFrame, "in" , value);
return true;
}
-static NEVER_INLINE bool isInvalidParamForInstanceOf(CallFrame* callFrame, CodeBlock* codeBlock, const Instruction* vPC, JSValue value, JSValue& exceptionData)
+static NEVER_INLINE bool isInvalidParamForInstanceOf(CallFrame* callFrame, JSValue value, JSValue& exceptionData)
{
if (value.isObject() && asObject(value)->structure()->typeInfo().implementsHasInstance())
return false;
- exceptionData = createInvalidParamError(callFrame, "instanceof" , value, vPC - codeBlock->instructions().begin(), codeBlock);
+ exceptionData = createInvalidParamError(callFrame, "instanceof" , value);
return true;
}
#endif
-NEVER_INLINE JSValue Interpreter::callEval(CallFrame* callFrame, RegisterFile* registerFile, Register* argv, int argc, int registerOffset, JSValue& exceptionValue)
+JSValue eval(CallFrame* callFrame)
{
- if (argc < 2)
+ if (!callFrame->argumentCount())
return jsUndefined();
- JSValue program = argv[1].jsValue();
-
+ JSValue program = callFrame->argument(0);
if (!program.isString())
return program;
-
- UString programSource = asString(program)->value();
-
- LiteralParser preparser(callFrame, programSource, LiteralParser::NonStrictJSON);
- if (JSValue parsedObject = preparser.tryLiteralParse())
- return parsedObject;
+ TopCallFrameSetter topCallFrame(callFrame->globalData(), callFrame);
+ UString programSource = asString(program)->value(callFrame);
+ if (callFrame->hadException())
+ return JSValue();
- ScopeChainNode* scopeChain = callFrame->scopeChain();
- CodeBlock* codeBlock = callFrame->codeBlock();
- RefPtr<EvalNode> evalNode = codeBlock->evalCodeCache().get(callFrame, programSource, scopeChain, exceptionValue);
+ 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<LChar> preparser(callFrame, programSource.characters8(), programSource.length(), NonStrictJSON);
+ if (JSValue parsedObject = preparser.tryLiteralParse())
+ return parsedObject;
+ } else {
+ LiteralParser<UChar> preparser(callFrame, programSource.characters16(), programSource.length(), NonStrictJSON);
+ if (JSValue parsedObject = preparser.tryLiteralParse())
+ return parsedObject;
+ }
+ }
- JSValue 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);
+}
+
+CallFrame* loadVarargs(CallFrame* callFrame, RegisterFile* registerFile, JSValue thisValue, JSValue arguments, int firstFreeRegister)
+{
+ 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;
+ }
+
+ if (!arguments.isObject()) {
+ callFrame->globalData().exception = createInvalidParamError(callFrame, "Function.prototype.apply", arguments);
+ return 0;
+ }
+
+ 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;
+ }
+
+ 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;
}
Interpreter::Interpreter()
- : m_sampler(0)
+ : m_sampleEntryDepth(0)
, m_reentryDepth(0)
+#if !ASSERT_DISABLED
+ , m_initialized(false)
+#endif
+ , m_classicEnabled(false)
{
-#if HAVE(COMPUTED_GOTO)
- privateExecute(InitializeAndReturn, 0, 0, 0);
+}
+
+Interpreter::~Interpreter()
+{
+#if ENABLE(LLINT)
+ if (m_classicEnabled)
+ delete[] m_opcodeTable;
+#endif
+}
+
+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<OpcodeID>(i));
-#endif // HAVE(COMPUTED_GOTO)
+ 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<void*>(static_cast<uintptr_t>(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<OpcodeID>(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
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) {
- v = (*it).jsValue();
-#if USE(JSVALUE32_64)
- printf("[global var] | %10p | %-16s 0x%llx \n", it, v.description(), JSValue::encode(v));
-#else
- printf("[global var] | %10p | %-16s %p \n", it, v.description(), JSValue::encode(v));
-#endif
- ++it;
- }
- printf("-----------------------------------------------------------------------------\n");
- }
-
- it = callFrame->registers() - RegisterFile::CallFrameHeaderSize - codeBlock->m_numParameters;
+ it = callFrame->registers() - RegisterFile::CallFrameHeaderSize - codeBlock->numParameters();
v = (*it).jsValue();
#if USE(JSVALUE32_64)
- printf("[this] | %10p | %-16s 0x%llx \n", it, v.description(), JSValue::encode(v)); ++it;
+ dataLog("[this] | %10p | %-16s 0x%llx \n", it, v.description(), JSValue::encode(v)); ++it;
#else
- printf("[this] | %10p | %-16s %p \n", it, v.description(), JSValue::encode(v)); ++it;
+ dataLog("[this] | %10p | %-16s %p \n", it, v.description(), JSValue::encode(v)); ++it;
#endif
- end = it + max(codeBlock->m_numParameters - 1, 0); // - 1 to skip "this"
+ end = it + max(codeBlock->numParameters() - 1, 0); // - 1 to skip "this"
if (it != end) {
do {
v = (*it).jsValue();
#if USE(JSVALUE32_64)
- printf("[param] | %10p | %-16s 0x%llx \n", it, v.description(), JSValue::encode(v));
+ dataLog("[param] | %10p | %-16s 0x%llx \n", it, v.description(), JSValue::encode(v));
#else
- printf("[param] | %10p | %-16s %p \n", it, v.description(), JSValue::encode(v));
+ dataLog("[param] | %10p | %-16s %p \n", it, v.description(), JSValue::encode(v));
#endif
++it;
} while (it != end);
}
- printf("-----------------------------------------------------------------------------\n");
- printf("[CodeBlock] | %10p | %p \n", it, (*it).codeBlock()); ++it;
- printf("[ScopeChain] | %10p | %p \n", it, (*it).scopeChain()); ++it;
- printf("[CallerRegisters] | %10p | %d \n", it, (*it).i()); ++it;
- printf("[ReturnPC] | %10p | %p \n", it, (*it).vPC()); ++it;
- printf("[ReturnValueRegister] | %10p | %d \n", it, (*it).i()); ++it;
- printf("[ArgumentCount] | %10p | %d \n", it, (*it).i()); ++it;
- printf("[Callee] | %10p | %p \n", it, (*it).function()); ++it;
- printf("[OptionalCalleeArguments] | %10p | %p \n", it, (*it).arguments()); ++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;
do {
v = (*it).jsValue();
#if USE(JSVALUE32_64)
- printf("[r%2d] | %10p | %-16s 0x%llx \n", registerCount, it, v.description(), JSValue::encode(v));
+ dataLog("[r%2d] | %10p | %-16s 0x%llx \n", registerCount, it, v.description(), JSValue::encode(v));
#else
- printf("[r%2d] | %10p | %-16s %p \n", registerCount, it, v.description(), JSValue::encode(v));
+ 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_numVars;
if (it != end) {
do {
v = (*it).jsValue();
#if USE(JSVALUE32_64)
- printf("[r%2d] | %10p | %-16s 0x%llx \n", registerCount, it, v.description(), JSValue::encode(v));
+ dataLog("[r%2d] | %10p | %-16s 0x%llx \n", registerCount, it, v.description(), JSValue::encode(v));
#else
- printf("[r%2d] | %10p | %-16s %p \n", registerCount, it, v.description(), JSValue::encode(v));
+ 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<OpcodeID>(bitwise_cast<uintptr_t>(opcode)) <= op_end;
+#endif
return opcode != HashTraits<Opcode>::emptyValue()
&& !HashTraits<Opcode>::isDeletedValue(opcode)
&& m_opcodeIDTable.contains(opcode);
if (Debugger* debugger = callFrame->dynamicGlobalObject()->debugger()) {
DebuggerCallFrame debuggerCallFrame(callFrame, exceptionValue);
if (callFrame->callee())
- debugger->returnEvent(debuggerCallFrame, codeBlock->ownerNode()->sourceID(), codeBlock->ownerNode()->lastLine());
+ debugger->returnEvent(debuggerCallFrame, codeBlock->ownerExecutable()->sourceID(), codeBlock->ownerExecutable()->lastLine());
else
- debugger->didExecuteProgram(debuggerCallFrame, codeBlock->ownerNode()->sourceID(), codeBlock->ownerNode()->lastLine());
- }
-
- if (Profiler* profiler = *Profiler::enabledProfilerReference()) {
- if (callFrame->callee())
- profiler->didExecute(callFrame, callFrame->callee());
- 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<JSActivation*>(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, JSValue& exceptionValue, unsigned bytecodeOffset, bool explicitThrow)
+static void appendSourceToError(CallFrame* callFrame, ErrorInstance* exception, unsigned bytecodeOffset)
{
- // Set up the exception object
+ exception->clearAppendSourceToMessage();
+
+ if (!callFrame->codeBlock()->hasExpressionInfo())
+ return;
+
+ int startOffset = 0;
+ int endOffset = 0;
+ int divotPoint = 0;
CodeBlock* codeBlock = callFrame->codeBlock();
- if (exceptionValue.isObject()) {
- JSObject* exception = asObject(exceptionValue);
- if (exception->isNotAnObjectErrorStub()) {
- exception = createNotAnObjectError(callFrame, static_cast<JSNotAnObjectErrorStub*>(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);
+ 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<FunctionExecutable*>(parentCallFrame->executable.get());
+ CodeBlock* newCodeBlock = executable->baselineCodeBlockFor(parentCallFrame->isCall ? CodeForCall : CodeForConstruct);
+ ASSERT(newCodeBlock);
+ ASSERT(newCodeBlock->instructionCount() > bytecodeOffset);
+ callerCodeBlock = newCodeBlock;
}
-
- 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;
+ } 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<FunctionExecutable*>(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<StackFrame>& 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<JSObject>(*globalData, callFrame->callee()), getStackFrameCodeType(callFrame), Strong<ExecutableBase>(*globalData, callFrame->codeBlock()->ownerExecutable()), line, sourceURL};
+ results.append(s);
+ } else {
+ StackFrame s = { Strong<JSObject>(*globalData, callFrame->callee()), StackFrameNativeCode, Strong<ExecutableBase>(), -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<StackFrame> 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<ErrorInstance*>(exception)->appendSourceToMessage())
+ appendSourceToError(callFrame, static_cast<ErrorInstance*>(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);
- 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->r(codeBlock->instructions()[bytecodeOffset + 2].u.operand).jsValue());
- else if (codeBlock->instructions()[bytecodeOffset + 8].u.opcode == getOpcode(op_construct))
- profiler->didExecute(callFrame, callFrame->r(codeBlock->instructions()[bytecodeOffset + 10].u.operand).jsValue());
-#else
- int functionRegisterIndex;
- if (codeBlock->functionRegisterForBytecodeOffset(bytecodeOffset, functionRegisterIndex))
- profiler->didExecute(callFrame, callFrame->r(functionRegisterIndex).jsValue());
-#endif
+ 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;
- // Now unwind the scope chain within the exception handler's call frame.
+ if (Profiler* profiler = *Profiler::enabledProfilerReference())
+ profiler->exceptionUnwind(callFrame);
+
+ // 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();
return handler;
}
-JSValue Interpreter::execute(ProgramNode* programNode, CallFrame* callFrame, ScopeChainNode* scopeChain, JSObject* thisObj, JSValue* 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> JSONPData;
+ bool parseResult;
+ const UString programSource = program->source().toString();
+ if (programSource.isNull())
+ return jsUndefined();
+ if (programSource.is8Bit()) {
+ LiteralParser<LChar> literalParser(callFrame, programSource.characters8(), programSource.length(), JSONP);
+ parseResult = literalParser.tryJSONPParse(JSONPData, scopeChain->globalObject->globalObjectMethodTable()->supportsRichSourceInfo(scopeChain->globalObject.get()));
+ } else {
+ LiteralParser<UChar> literalParser(callFrame, programSource.characters16(), programSource.length(), JSONP);
+ parseResult = literalParser.tryJSONPParse(JSONPData, scopeChain->globalObject->globalObjectMethodTable()->supportsRichSourceInfo(scopeChain->globalObject.get()));
+ }
- if (m_reentryDepth >= MaxSecondaryThreadReentryDepth) {
- if (!isMainThread() || m_reentryDepth >= MaxMainThreadReentryDepth) {
- *exception = createStackOverflowError(callFrame);
- return jsNull();
+ if (parseResult) {
+ JSGlobalObject* globalObject = scopeChain->globalObject.get();
+ JSValue result;
+ for (unsigned entry = 0; entry < JSONPData.size(); entry++) {
+ Vector<JSONPPathEntry> 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;
}
-
- CodeBlock* codeBlock = &programNode->bytecode(scopeChain);
+failedJSONP:
+ JSObject* error = program->compile(callFrame, scopeChain);
+ if (error)
+ return checkedReturn(throwError(callFrame, error));
+ CodeBlock* codeBlock = &program->generatedBytecode();
Register* oldEnd = m_registerFile.end();
- Register* newEnd = oldEnd + codeBlock->m_numParameters + RegisterFile::CallFrameHeaderSize + codeBlock->m_numCalleeRegisters;
- if (!m_registerFile.grow(newEnd)) {
- *exception = createStackOverflowError(callFrame);
- return jsNull();
- }
-
- DynamicGlobalObjectScope globalObjectScope(callFrame, scopeChain->globalObject());
-
- JSGlobalObject* lastGlobalObject = m_registerFile.globalObject();
- JSGlobalObject* globalObject = callFrame->dynamicGlobalObject();
- globalObject->copyGlobalsTo(m_registerFile);
+ 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->m_numParameters + RegisterFile::CallFrameHeaderSize);
- newCallFrame->r(codeBlock->thisRegister()) = JSValue(thisObj);
- newCallFrame->init(codeBlock, 0, scopeChain, CallFrame::noCaller(), 0, 0, 0);
-
- if (codeBlock->needsFullScopeChain())
- scopeChain->ref();
+ 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(newCallFrame, programNode->sourceURL(), programNode->lineNo());
+ (*profiler)->willExecute(callFrame, program->sourceURL(), program->lineNo());
JSValue result;
{
- SamplingTool::CallRecord callRecord(m_sampler);
+ SamplingTool::CallRecord callRecord(m_sampler.get());
- m_reentryDepth++;
+ m_reentryDepth++;
#if ENABLE(JIT)
- result = programNode->jitCode(scopeChain).execute(&m_registerFile, newCallFrame, scopeChain->globalData, exception);
-#else
- result = privateExecute(Normal, &m_registerFile, newCallFrame, exception);
+ if (!classicEnabled())
+ result = program->generatedJITCode().execute(&m_registerFile, newCallFrame, scopeChain->globalData);
+ else
#endif
+ result = privateExecute(Normal, &m_registerFile, newCallFrame);
+
m_reentryDepth--;
}
if (*profiler)
- (*profiler)->didExecute(callFrame, programNode->sourceURL(), programNode->lineNo());
-
- if (m_reentryDepth && lastGlobalObject && globalObject != lastGlobalObject)
- lastGlobalObject->copyGlobalsTo(m_registerFile);
+ (*profiler)->didExecute(callFrame, program->sourceURL(), program->lineNo());
m_registerFile.shrink(oldEnd);
- return result;
+ return checkedReturn(result);
}
-JSValue Interpreter::execute(FunctionBodyNode* functionBodyNode, CallFrame* callFrame, JSFunction* function, JSObject* thisObj, const ArgList& args, ScopeChainNode* scopeChain, JSValue* exception)
+JSValue Interpreter::executeCall(CallFrame* callFrame, JSObject* function, CallType callType, const CallData& callData, JSValue thisValue, const ArgList& args)
{
- ASSERT(!scopeChain->globalData->exception);
+ ASSERT(isValidThisObject(thisValue, callFrame));
+ ASSERT(!callFrame->hadException());
+ ASSERT(!callFrame->globalData().isCollectorBusy());
+ if (callFrame->globalData().isCollectorBusy())
+ return jsNull();
- if (m_reentryDepth >= MaxSecondaryThreadReentryDepth) {
- if (!isMainThread() || m_reentryDepth >= MaxMainThreadReentryDepth) {
- *exception = createStackOverflowError(callFrame);
- return jsNull();
- }
- }
+ if (m_reentryDepth >= MaxSmallThreadReentryDepth && m_reentryDepth >= callFrame->globalData().maxReentryDepth)
+ return checkedReturn(throwStackOverflowError(callFrame));
Register* oldEnd = m_registerFile.end();
- int argc = 1 + args.size(); // implicit "this" parameter
+ ASSERT(callFrame->frameExtent() <= oldEnd || callFrame == callFrame->scopeChain()->globalObject->globalExec());
+ int argCount = 1 + args.size(); // implicit "this" parameter
+ size_t registerOffset = argCount + 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()))
+ return checkedReturn(throwStackOverflowError(callFrame));
- DynamicGlobalObjectScope globalObjectScope(callFrame, callFrame->globalData().dynamicGlobalObject ? callFrame->globalData().dynamicGlobalObject : scopeChain->globalObject());
+ newCallFrame->setThisValue(thisValue);
+ for (size_t i = 0; i < args.size(); ++i)
+ newCallFrame->setArgument(i, args.at(i));
- CallFrame* newCallFrame = CallFrame::create(oldEnd);
- size_t dst = 0;
- newCallFrame->r(0) = JSValue(thisObj);
- ArgList::const_iterator end = args.end();
- for (ArgList::const_iterator it = args.begin(); it != end; ++it)
- newCallFrame->r(++dst) = *it;
+ 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);
- CodeBlock* codeBlock = &functionBodyNode->bytecode(scopeChain);
- newCallFrame = slideRegisterWindowForCall(codeBlock, &m_registerFile, newCallFrame, argc + RegisterFile::CallFrameHeaderSize, argc);
- if (UNLIKELY(!newCallFrame)) {
- *exception = createStackOverflowError(callFrame);
m_registerFile.shrink(oldEnd);
- return jsNull();
+ return checkedReturn(result);
}
- // a 0 codeBlock indicates a built-in caller
- newCallFrame->init(codeBlock, 0, scopeChain, callFrame->addHostCallFrameFlag(), 0, argc, function);
+
+ ASSERT(callType == CallTypeHost);
+ ScopeChainNode* scopeChain = callFrame->scopeChain();
+ newCallFrame->init(0, 0, scopeChain, callFrame->addHostCallFrameFlag(), argCount, function);
+
+ TopCallFrameSetter topCallFrame(callFrame->globalData(), newCallFrame);
+
+ DynamicGlobalObjectScope globalObjectScope(*scopeChain->globalData, scopeChain->globalObject.get());
Profiler** profiler = Profiler::enabledProfilerReference();
if (*profiler)
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)
- result = functionBodyNode->jitCode(scopeChain).execute(&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)->willExecute(callFrame, constructor);
+
+ JSValue result;
+ {
+ SamplingTool::HostCallRecord callRecord(m_sampler.get());
+ result = JSValue::decode(constructData.native.function(newCallFrame));
}
if (*profiler)
- (*profiler)->didExecute(callFrame, function);
+ (*profiler)->didExecute(callFrame, constructor);
m_registerFile.shrink(oldEnd);
- return result;
+ if (callFrame->hadException())
+ return 0;
+ ASSERT(result.isObject());
+ return checkedReturn(asObject(result));
}
-CallFrameClosure Interpreter::prepareForRepeatCall(FunctionBodyNode* functionBodyNode, CallFrame* callFrame, JSFunction* function, int argCount, ScopeChainNode* scopeChain, JSValue* exception)
+CallFrameClosure Interpreter::prepareForRepeatCall(FunctionExecutable* functionExecutable, CallFrame* callFrame, JSFunction* function, int argumentCountIncludingThis, ScopeChainNode* scopeChain)
{
ASSERT(!scopeChain->globalData->exception);
- if (m_reentryDepth >= MaxSecondaryThreadReentryDepth) {
- if (!isMainThread() || m_reentryDepth >= MaxMainThreadReentryDepth) {
- *exception = createStackOverflowError(callFrame);
- return CallFrameClosure();
- }
+ if (callFrame->globalData().isCollectorBusy())
+ return CallFrameClosure();
+
+ if (m_reentryDepth >= MaxSmallThreadReentryDepth && m_reentryDepth >= callFrame->globalData().maxReentryDepth) {
+ throwStackOverflowError(callFrame);
+ return CallFrameClosure();
}
-
+
Register* oldEnd = m_registerFile.end();
- int argc = 1 + argCount; // implicit "this" parameter
-
- if (!m_registerFile.grow(oldEnd + argc)) {
- *exception = createStackOverflowError(callFrame);
+ size_t registerOffset = argumentCountIncludingThis + RegisterFile::CallFrameHeaderSize;
+
+ CallFrame* newCallFrame = CallFrame::create(oldEnd + registerOffset);
+ if (!m_registerFile.grow(newCallFrame->registers())) {
+ throwStackOverflowError(callFrame);
return CallFrameClosure();
}
- CallFrame* newCallFrame = CallFrame::create(oldEnd);
- size_t dst = 0;
- for (int i = 0; i < argc; ++i)
- newCallFrame->r(++dst) = jsUndefined();
-
- CodeBlock* codeBlock = &functionBodyNode->bytecode(scopeChain);
- newCallFrame = slideRegisterWindowForCall(codeBlock, &m_registerFile, newCallFrame, argc + RegisterFile::CallFrameHeaderSize, argc);
- if (UNLIKELY(!newCallFrame)) {
- *exception = createStackOverflowError(callFrame);
+ JSObject* error = functionExecutable->compileForCall(callFrame, scopeChain);
+ if (error) {
+ throwError(callFrame, error);
m_registerFile.shrink(oldEnd);
return CallFrameClosure();
}
- // a 0 codeBlock indicates a built-in caller
- newCallFrame->init(codeBlock, 0, scopeChain, callFrame->addHostCallFrameFlag(), 0, argc, function);
-#if ENABLE(JIT)
- functionBodyNode->jitCode(scopeChain);
-#endif
+ CodeBlock* codeBlock = &functionExecutable->generatedBytecodeForCall();
- CallFrameClosure result = { callFrame, newCallFrame, function, functionBodyNode, scopeChain->globalData, oldEnd, scopeChain, codeBlock->m_numParameters, argc };
+ newCallFrame = slideRegisterWindowForCall(codeBlock, &m_registerFile, newCallFrame, 0, argumentCountIncludingThis);
+ if (UNLIKELY(!newCallFrame)) {
+ throwStackOverflowError(callFrame);
+ m_registerFile.shrink(oldEnd);
+ return CallFrameClosure();
+ }
+ 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, JSValue* exception)
+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(closure.oldCallFrame, closure.function);
-
+
+ TopCallFrameSetter topCallFrame(*closure.globalData, closure.newCallFrame);
+
JSValue result;
{
- SamplingTool::CallRecord callRecord(m_sampler);
+ SamplingTool::CallRecord callRecord(m_sampler.get());
- m_reentryDepth++;
+ m_reentryDepth++;
#if ENABLE(JIT)
- result = closure.functionBody->generatedJITCode().execute(&m_registerFile, closure.newCallFrame, closure.globalData, exception);
-#else
- result = privateExecute(Normal, &m_registerFile, closure.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(closure.oldCallFrame, closure.function);
- return result;
+ return checkedReturn(result);
}
void Interpreter::endRepeatCall(CallFrameClosure& closure)
{
+ closure.globalData->topCallFrame = closure.oldCallFrame;
m_registerFile.shrink(closure.oldEnd);
}
-JSValue Interpreter::execute(EvalNode* evalNode, CallFrame* callFrame, JSObject* thisObj, ScopeChainNode* scopeChain, JSValue* exception)
-{
- return execute(evalNode, callFrame, thisObj, m_registerFile.size() + evalNode->bytecode(scopeChain).m_numParameters + RegisterFile::CallFrameHeaderSize, scopeChain, exception);
-}
-
-JSValue Interpreter::execute(EvalNode* evalNode, CallFrame* callFrame, JSObject* thisObj, int globalRegisterOffset, ScopeChainNode* scopeChain, JSValue* exception)
+JSValue Interpreter::execute(EvalExecutable* eval, CallFrame* callFrame, JSValue thisValue, ScopeChainNode* scopeChain, int globalRegisterOffset)
{
+ ASSERT(isValidThisObject(thisValue, callFrame));
ASSERT(!scopeChain->globalData->exception);
+ ASSERT(!callFrame->globalData().isCollectorBusy());
+ if (callFrame->globalData().isCollectorBusy())
+ return jsNull();
- if (m_reentryDepth >= MaxSecondaryThreadReentryDepth) {
- if (!isMainThread() || m_reentryDepth >= MaxMainThreadReentryDepth) {
- *exception = createStackOverflowError(callFrame);
- return jsNull();
- }
- }
+ DynamicGlobalObjectScope globalObjectScope(*scopeChain->globalData, scopeChain->globalObject.get());
- DynamicGlobalObjectScope globalObjectScope(callFrame, callFrame->globalData().dynamicGlobalObject ? callFrame->globalData().dynamicGlobalObject : scopeChain->globalObject());
+ if (m_reentryDepth >= MaxSmallThreadReentryDepth && m_reentryDepth >= callFrame->globalData().maxReentryDepth)
+ return checkedReturn(throwStackOverflowError(callFrame));
- EvalCodeBlock* codeBlock = &evalNode->bytecode(scopeChain);
+ JSObject* compileError = eval->compile(callFrame, scopeChain);
+ if (UNLIKELY(!!compileError))
+ return checkedReturn(throwError(callFrame, compileError));
+ EvalCodeBlock* codeBlock = &eval->generatedBytecode();
- JSVariableObject* variableObject;
- for (ScopeChainNode* node = scopeChain; ; node = node->next) {
+ JSObject* variableObject;
+ for (ScopeChainNode* node = scopeChain; ; node = node->next.get()) {
ASSERT(node);
- if (node->object->isVariableObject()) {
- variableObject = static_cast<JSVariableObject*>(node->object);
+ if (node->object->isVariableObject() && !node->object->isStaticScopeObject()) {
+ variableObject = jsCast<JSVariableObject*>(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->r(codeBlock->thisRegister()) = JSValue(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());
JSValue result;
{
- SamplingTool::CallRecord callRecord(m_sampler);
+ SamplingTool::CallRecord callRecord(m_sampler.get());
m_reentryDepth++;
+
#if ENABLE(JIT)
- result = evalNode->jitCode(scopeChain).execute(&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)
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;
}
}
-#if USE(INTERPRETER)
+#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);
- JSValue value = callFrame->r((++vPC)->u.operand).jsValue();
- JSObject* scope = new (callFrame) JSStaticScopeObject(callFrame, property, value, DontDelete);
- callFrame->r(dst) = JSValue(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);
}
return;
}
- JSCell* baseCell = asCell(baseValue);
+ JSCell* baseCell = baseValue.asCell();
Structure* structure = baseCell->structure();
- if (structure->isUncacheableDictionary()) {
+ 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;
}
return;
}
- StructureChain* protoChain = structure->prototypeChain(callFrame);
- if (!protoChain->isCacheable()) {
- vPC[0] = getOpcode(op_put_by_id_generic);
- return;
- }
-
// 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] = protoChain;
+ 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;
}
return;
}
- JSGlobalData* globalData = &callFrame->globalData();
- if (isJSArray(globalData, baseValue) && propertyName == callFrame->propertyNames().length) {
+ if (isJSArray(baseValue) && propertyName == callFrame->propertyNames().length) {
vPC[0] = getOpcode(op_get_array_length);
return;
}
- if (isJSString(globalData, baseValue) && propertyName == callFrame->propertyNames().length) {
+ if (isJSString(baseValue) && propertyName == callFrame->propertyNames().length) {
vPC[0] = getOpcode(op_get_string_length);
return;
}
return;
}
- Structure* structure = asCell(baseValue)->structure();
+ Structure* structure = baseValue.asCell()->structure();
- if (structure->isUncacheableDictionary()) {
+ 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;
}
// Cache hit: Specialize instruction and ref Structures.
if (slot.slotBase() == baseValue) {
- vPC[0] = getOpcode(op_get_by_id_self);
- vPC[5] = slot.cachedOffset();
-
- codeBlock->refStructures(vPC);
+ 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;
}
// 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->flattenDictionaryObject();
- offset = baseObject->structure()->get(propertyName);
+ baseObject->flattenDictionaryObject(callFrame->globalData());
+ offset = baseObject->structure()->get(callFrame->globalData(), propertyName);
}
ASSERT(!baseObject->structure()->isUncacheableDictionary());
-
- vPC[0] = getOpcode(op_get_by_id_proto);
- vPC[5] = baseObject->structure();
- vPC[6] = offset;
-
- codeBlock->refStructures(vPC);
+
+ 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;
}
return;
}
- StructureChain* protoChain = structure->prototypeChain(callFrame);
- if (!protoChain->isCacheable()) {
- vPC[0] = getOpcode(op_get_by_id_generic);
- return;
- }
-
- vPC[0] = getOpcode(op_get_by_id_chain);
- vPC[4] = structure;
- vPC[5] = protoChain;
+
+ 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] = offset;
- 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;
}
-#endif // USE(INTERPRETER)
+#endif // ENABLE(CLASSIC_INTERPRETER)
-JSValue Interpreter::privateExecute(ExecutionFlag flag, RegisterFile* registerFile, CallFrame* callFrame, JSValue* exception)
+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 (UNLIKELY(flag == InitializeAndReturn)) {
- #if HAVE(COMPUTED_GOTO)
+ #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 < sizeof(labels) / sizeof(Opcode); ++i)
+ for (size_t i = 0; i < WTF_ARRAY_LENGTH(labels); ++i)
m_opcodeTable[i] = labels[i];
#undef LIST_OPCODE_LABEL
- #endif // HAVE(COMPUTED_GOTO)
+ #endif // ENABLE(COMPUTED_GOTO_CLASSIC_INTERPRETER)
return JSValue();
}
-
+
+ ASSERT(m_initialized);
+ ASSERT(m_classicEnabled);
+
#if ENABLE(JIT)
+#if ENABLE(CLASSIC_INTERPRETER)
// Mixing Interpreter + JIT is not supported.
- ASSERT_NOT_REACHED();
+ if (callFrame->globalData().canUseJIT())
#endif
-#if !USE(INTERPRETER)
+ ASSERT_NOT_REACHED();
+#endif
+
+#if !ENABLE(CLASSIC_INTERPRETER)
UNUSED_PARAM(registerFile);
UNUSED_PARAM(callFrame);
- UNUSED_PARAM(exception);
return JSValue();
#else
+ ASSERT(callFrame->globalData().topCallFrame == callFrame);
+
JSGlobalData* globalData = &callFrame->globalData();
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 = globalData->timeoutChecker.ticksUntilNextCheck();
+ JSValue functionReturnValue;
#define CHECK_FOR_EXCEPTION() \
do { \
#define CHECK_FOR_TIMEOUT() \
if (!--tickCount) { \
- if (globalData->timeoutChecker.didTimeOut(callFrame)) { \
+ if (globalData->terminator.shouldTerminate() || globalData->timeoutChecker.didTimeOut(callFrame)) { \
exceptionValue = jsNull(); \
goto vm_throw; \
} \
#define SAMPLE(codeBlock, vPC)
#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:;
Constructs a new empty Object instance using the original
constructor, and puts the result in register dst.
*/
- int dst = (++vPC)->u.operand;
- callFrame->r(dst) = JSValue(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) {
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->r(dst) = JSValue(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<JSValue*>(&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) {
constructor from regexp regExp, and puts the result in
register dst.
*/
- int dst = (++vPC)->u.operand;
- int regExp = (++vPC)->u.operand;
- callFrame->r(dst) = JSValue(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) {
Copies register src to register dst.
*/
- int dst = (++vPC)->u.operand;
- int src = (++vPC)->u.operand;
- callFrame->r(dst) = callFrame->r(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) {
as with the ECMAScript '==' operator, and puts the result
as a boolean in register dst.
*/
- int dst = (++vPC)->u.operand;
- JSValue src1 = callFrame->r((++vPC)->u.operand).jsValue();
- JSValue src2 = callFrame->r((++vPC)->u.operand).jsValue();
+ 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->r(dst) = jsBoolean(src1.asInt32() == src2.asInt32());
+ callFrame->uncheckedR(dst) = jsBoolean(src1.asInt32() == src2.asInt32());
else {
JSValue result = jsBoolean(JSValue::equalSlowCase(callFrame, src1, src2));
CHECK_FOR_EXCEPTION();
- callFrame->r(dst) = result;
+ callFrame->uncheckedR(dst) = result;
}
- ++vPC;
+ vPC += OPCODE_LENGTH(op_eq);
NEXT_INSTRUCTION();
}
DEFINE_OPCODE(op_eq_null) {
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;
- JSValue src = callFrame->r((++vPC)->u.operand).jsValue();
+ int dst = vPC[1].u.operand;
+ JSValue src = callFrame->r(vPC[2].u.operand).jsValue();
if (src.isUndefinedOrNull()) {
- callFrame->r(dst) = jsBoolean(true);
- ++vPC;
+ callFrame->uncheckedR(dst) = jsBoolean(true);
+ vPC += OPCODE_LENGTH(op_eq_null);
NEXT_INSTRUCTION();
}
- callFrame->r(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) {
equal, as with the ECMAScript '!=' operator, and puts the
result as a boolean in register dst.
*/
- int dst = (++vPC)->u.operand;
- JSValue src1 = callFrame->r((++vPC)->u.operand).jsValue();
- JSValue src2 = callFrame->r((++vPC)->u.operand).jsValue();
+ 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->r(dst) = jsBoolean(src1.asInt32() != src2.asInt32());
+ callFrame->uncheckedR(dst) = jsBoolean(src1.asInt32() != src2.asInt32());
else {
JSValue result = jsBoolean(!JSValue::equalSlowCase(callFrame, src1, src2));
CHECK_FOR_EXCEPTION();
- callFrame->r(dst) = result;
+ callFrame->uncheckedR(dst) = result;
}
- ++vPC;
+ vPC += OPCODE_LENGTH(op_neq);
NEXT_INSTRUCTION();
}
DEFINE_OPCODE(op_neq_null) {
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;
- JSValue src = callFrame->r((++vPC)->u.operand).jsValue();
+ int dst = vPC[1].u.operand;
+ JSValue src = callFrame->r(vPC[2].u.operand).jsValue();
if (src.isUndefinedOrNull()) {
- callFrame->r(dst) = jsBoolean(false);
- ++vPC;
+ callFrame->uncheckedR(dst) = jsBoolean(false);
+ vPC += OPCODE_LENGTH(op_neq_null);
NEXT_INSTRUCTION();
}
- callFrame->r(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) {
equal, as with the ECMAScript '===' operator, and puts the
result as a boolean in register dst.
*/
- int dst = (++vPC)->u.operand;
- JSValue src1 = callFrame->r((++vPC)->u.operand).jsValue();
- JSValue src2 = callFrame->r((++vPC)->u.operand).jsValue();
- callFrame->r(dst) = jsBoolean(JSValue::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) {
strictly equal, as with the ECMAScript '!==' operator, and
puts the result as a boolean in register dst.
*/
- int dst = (++vPC)->u.operand;
- JSValue src1 = callFrame->r((++vPC)->u.operand).jsValue();
- JSValue src2 = callFrame->r((++vPC)->u.operand).jsValue();
- callFrame->r(dst) = jsBoolean(!JSValue::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) {
with the ECMAScript '<' operator, and puts the result as
a boolean in register dst.
*/
- int dst = (++vPC)->u.operand;
- JSValue src1 = callFrame->r((++vPC)->u.operand).jsValue();
- JSValue src2 = callFrame->r((++vPC)->u.operand).jsValue();
- JSValue 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<true>(callFrame, src1, src2));
CHECK_FOR_EXCEPTION();
- callFrame->r(dst) = result;
+ callFrame->uncheckedR(dst) = result;
- ++vPC;
+ vPC += OPCODE_LENGTH(op_less);
NEXT_INSTRUCTION();
}
DEFINE_OPCODE(op_lesseq) {
/* lesseq dst(r) src1(r) src2(r)
- Checks whether register src1 is less than or equal to
- register src2, as with the ECMAScript '<=' operator, and
+ Checks whether register src1 is less 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<true>(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<false>(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)->u.operand;
- JSValue src1 = callFrame->r((++vPC)->u.operand).jsValue();
- JSValue src2 = callFrame->r((++vPC)->u.operand).jsValue();
- JSValue 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<false>(callFrame, src2, src1));
CHECK_FOR_EXCEPTION();
- callFrame->r(dst) = result;
+ callFrame->uncheckedR(dst) = result;
- ++vPC;
+ vPC += OPCODE_LENGTH(op_greatereq);
NEXT_INSTRUCTION();
}
DEFINE_OPCODE(op_pre_inc) {
Converts register srcDst to number, adds one, and puts the result
back in register srcDst.
*/
- int srcDst = (++vPC)->u.operand;
+ int srcDst = vPC[1].u.operand;
JSValue v = callFrame->r(srcDst).jsValue();
if (v.isInt32() && v.asInt32() < INT_MAX)
- callFrame->r(srcDst) = jsNumber(callFrame, v.asInt32() + 1);
+ callFrame->uncheckedR(srcDst) = jsNumber(v.asInt32() + 1);
else {
- JSValue result = jsNumber(callFrame, v.toNumber(callFrame) + 1);
+ JSValue result = jsNumber(v.toNumber(callFrame) + 1);
CHECK_FOR_EXCEPTION();
- callFrame->r(srcDst) = result;
+ callFrame->uncheckedR(srcDst) = result;
}
- ++vPC;
+ vPC += OPCODE_LENGTH(op_pre_inc);
NEXT_INSTRUCTION();
}
DEFINE_OPCODE(op_pre_dec) {
Converts register srcDst to number, subtracts one, and puts the result
back in register srcDst.
*/
- int srcDst = (++vPC)->u.operand;
+ int srcDst = vPC[1].u.operand;
JSValue v = callFrame->r(srcDst).jsValue();
if (v.isInt32() && v.asInt32() > INT_MIN)
- callFrame->r(srcDst) = jsNumber(callFrame, v.asInt32() - 1);
+ callFrame->uncheckedR(srcDst) = jsNumber(v.asInt32() - 1);
else {
- JSValue result = jsNumber(callFrame, v.toNumber(callFrame) - 1);
+ JSValue result = jsNumber(v.toNumber(callFrame) - 1);
CHECK_FOR_EXCEPTION();
- callFrame->r(srcDst) = result;
+ callFrame->uncheckedR(srcDst) = result;
}
- ++vPC;
+ vPC += OPCODE_LENGTH(op_pre_dec);
NEXT_INSTRUCTION();
}
DEFINE_OPCODE(op_post_inc) {
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;
+ 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->r(srcDst) = jsNumber(callFrame, v.asInt32() + 1);
- callFrame->r(dst) = v;
+ callFrame->uncheckedR(srcDst) = jsNumber(v.asInt32() + 1);
+ callFrame->uncheckedR(dst) = v;
} else {
- JSValue number = callFrame->r(srcDst).jsValue().toJSNumber(callFrame);
+ double number = callFrame->r(srcDst).jsValue().toNumber(callFrame);
CHECK_FOR_EXCEPTION();
- callFrame->r(srcDst) = jsNumber(callFrame, number.uncheckedGetNumber() + 1);
- callFrame->r(dst) = number;
+ 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) {
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;
+ 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->r(srcDst) = jsNumber(callFrame, v.asInt32() - 1);
- callFrame->r(dst) = v;
+ callFrame->uncheckedR(srcDst) = jsNumber(v.asInt32() - 1);
+ callFrame->uncheckedR(dst) = v;
} else {
- JSValue number = callFrame->r(srcDst).jsValue().toJSNumber(callFrame);
+ double number = callFrame->r(srcDst).jsValue().toNumber(callFrame);
CHECK_FOR_EXCEPTION();
- callFrame->r(srcDst) = jsNumber(callFrame, number.uncheckedGetNumber() - 1);
- callFrame->r(dst) = number;
+ 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) {
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;
JSValue srcVal = callFrame->r(src).jsValue();
if (LIKELY(srcVal.isNumber()))
- callFrame->r(dst) = callFrame->r(src);
+ callFrame->uncheckedR(dst) = callFrame->r(src);
else {
- JSValue result = srcVal.toJSNumber(callFrame);
+ double number = srcVal.toNumber(callFrame);
CHECK_FOR_EXCEPTION();
- callFrame->r(dst) = result;
+ callFrame->uncheckedR(dst) = jsNumber(number);
}
- ++vPC;
+ vPC += OPCODE_LENGTH(op_to_jsnumber);
NEXT_INSTRUCTION();
}
DEFINE_OPCODE(op_negate) {
Converts register src to number, negates it, and puts the
result in register dst.
*/
- int dst = (++vPC)->u.operand;
- JSValue src = callFrame->r((++vPC)->u.operand).jsValue();
- if (src.isInt32() && src.asInt32())
- callFrame->r(dst) = jsNumber(callFrame, -src.asInt32());
+ 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 {
- JSValue result = jsNumber(callFrame, -src.toNumber(callFrame));
+ JSValue result = jsNumber(-src.toNumber(callFrame));
CHECK_FOR_EXCEPTION();
- callFrame->r(dst) = result;
+ callFrame->uncheckedR(dst) = result;
}
- ++vPC;
+ vPC += OPCODE_LENGTH(op_negate);
NEXT_INSTRUCTION();
}
DEFINE_OPCODE(op_add) {
in register dst. (JS add may be string concatenation or
numeric add, depending on the types of the operands.)
*/
- int dst = (++vPC)->u.operand;
- JSValue src1 = callFrame->r((++vPC)->u.operand).jsValue();
- JSValue src2 = callFrame->r((++vPC)->u.operand).jsValue();
- if (src1.isInt32() && src2.isInt32() && !(src1.asInt32() | src2.asInt32() & 0xc0000000)) // no overflow
- callFrame->r(dst) = jsNumber(callFrame, src1.asInt32() + src2.asInt32());
+ 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 {
JSValue result = jsAdd(callFrame, src1, src2);
CHECK_FOR_EXCEPTION();
- callFrame->r(dst) = result;
+ callFrame->uncheckedR(dst) = result;
}
- vPC += 2;
+ vPC += OPCODE_LENGTH(op_add);
NEXT_INSTRUCTION();
}
DEFINE_OPCODE(op_mul) {
Multiplies register src1 and register src2 (converted to
numbers), and puts the product in register dst.
*/
- int dst = (++vPC)->u.operand;
- JSValue src1 = callFrame->r((++vPC)->u.operand).jsValue();
- JSValue src2 = callFrame->r((++vPC)->u.operand).jsValue();
- if (src1.isInt32() && src2.isInt32() && !(src1.asInt32() | src2.asInt32() >> 15)) // no overflow
- callFrame->r(dst) = jsNumber(callFrame, src1.asInt32() * src2.asInt32());
+ 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 {
- JSValue result = jsNumber(callFrame, src1.toNumber(callFrame) * src2.toNumber(callFrame));
+ JSValue result = jsNumber(src1.toNumber(callFrame) * src2.toNumber(callFrame));
CHECK_FOR_EXCEPTION();
- callFrame->r(dst) = result;
+ callFrame->uncheckedR(dst) = result;
}
- vPC += 2;
+ vPC += OPCODE_LENGTH(op_mul);
NEXT_INSTRUCTION();
}
DEFINE_OPCODE(op_div) {
register divisor (converted to number), and puts the
quotient in register dst.
*/
- int dst = (++vPC)->u.operand;
- JSValue dividend = callFrame->r((++vPC)->u.operand).jsValue();
- JSValue divisor = callFrame->r((++vPC)->u.operand).jsValue();
+ 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(callFrame, dividend.toNumber(callFrame) / divisor.toNumber(callFrame));
+ JSValue result = jsNumber(dividend.toNumber(callFrame) / divisor.toNumber(callFrame));
CHECK_FOR_EXCEPTION();
- callFrame->r(dst) = result;
+ callFrame->uncheckedR(dst) = result;
- vPC += 2;
+ vPC += OPCODE_LENGTH(op_div);
NEXT_INSTRUCTION();
}
DEFINE_OPCODE(op_mod) {
register divisor (converted to number), and puts the
remainder in register dst.
*/
- int dst = (++vPC)->u.operand;
- JSValue dividend = callFrame->r((++vPC)->u.operand).jsValue();
- JSValue divisor = callFrame->r((++vPC)->u.operand).jsValue();
+ 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 (dividend.isInt32() && divisor.isInt32() && divisor.asInt32() != 0) {
- JSValue result = jsNumber(callFrame, dividend.asInt32() % divisor.asInt32());
+ JSValue result = jsNumber(dividend.asInt32() % divisor.asInt32());
ASSERT(result);
- callFrame->r(dst) = result;
- ++vPC;
+ callFrame->uncheckedR(dst) = result;
+ vPC += OPCODE_LENGTH(op_mod);
NEXT_INSTRUCTION();
}
// order of argument evaluation is not guaranteed.
double d1 = dividend.toNumber(callFrame);
double d2 = divisor.toNumber(callFrame);
- JSValue result = jsNumber(callFrame, fmod(d1, d2));
+ JSValue result = jsNumber(fmod(d1, d2));
CHECK_FOR_EXCEPTION();
- callFrame->r(dst) = result;
- ++vPC;
+ callFrame->uncheckedR(dst) = result;
+ vPC += OPCODE_LENGTH(op_mod);
NEXT_INSTRUCTION();
}
DEFINE_OPCODE(op_sub) {
src1 (converted to number), and puts the difference in
register dst.
*/
- int dst = (++vPC)->u.operand;
- JSValue src1 = callFrame->r((++vPC)->u.operand).jsValue();
- JSValue src2 = callFrame->r((++vPC)->u.operand).jsValue();
- if (src1.isInt32() && src2.isInt32() && !(src1.asInt32() | src2.asInt32() & 0xc0000000)) // no overflow
- callFrame->r(dst) = jsNumber(callFrame, src1.asInt32() - src2.asInt32());
+ 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 {
- JSValue result = jsNumber(callFrame, src1.toNumber(callFrame) - src2.toNumber(callFrame));
+ JSValue result = jsNumber(src1.toNumber(callFrame) - src2.toNumber(callFrame));
CHECK_FOR_EXCEPTION();
- callFrame->r(dst) = result;
+ callFrame->uncheckedR(dst) = result;
}
- vPC += 2;
+ vPC += OPCODE_LENGTH(op_sub);
NEXT_INSTRUCTION();
}
DEFINE_OPCODE(op_lshift) {
register shift (converted to uint32), and puts the result
in register dst.
*/
- int dst = (++vPC)->u.operand;
- JSValue val = callFrame->r((++vPC)->u.operand).jsValue();
- JSValue shift = callFrame->r((++vPC)->u.operand).jsValue();
+ 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->r(dst) = jsNumber(callFrame, val.asInt32() << (shift.asInt32() & 0x1f));
+ callFrame->uncheckedR(dst) = jsNumber(val.asInt32() << (shift.asInt32() & 0x1f));
else {
- JSValue result = jsNumber(callFrame, (val.toInt32(callFrame)) << (shift.toUInt32(callFrame) & 0x1f));
+ JSValue result = jsNumber((val.toInt32(callFrame)) << (shift.toUInt32(callFrame) & 0x1f));
CHECK_FOR_EXCEPTION();
- callFrame->r(dst) = result;
+ callFrame->uncheckedR(dst) = result;
}
- ++vPC;
+ vPC += OPCODE_LENGTH(op_lshift);
NEXT_INSTRUCTION();
}
DEFINE_OPCODE(op_rshift) {
to int32) by register shift (converted to
uint32), and puts the result in register dst.
*/
- int dst = (++vPC)->u.operand;
- JSValue val = callFrame->r((++vPC)->u.operand).jsValue();
- JSValue shift = callFrame->r((++vPC)->u.operand).jsValue();
+ 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->r(dst) = jsNumber(callFrame, val.asInt32() >> (shift.asInt32() & 0x1f));
+ callFrame->uncheckedR(dst) = jsNumber(val.asInt32() >> (shift.asInt32() & 0x1f));
else {
- JSValue result = jsNumber(callFrame, (val.toInt32(callFrame)) >> (shift.toUInt32(callFrame) & 0x1f));
+ JSValue result = jsNumber((val.toInt32(callFrame)) >> (shift.toUInt32(callFrame) & 0x1f));
CHECK_FOR_EXCEPTION();
- callFrame->r(dst) = result;
+ callFrame->uncheckedR(dst) = result;
}
- ++vPC;
+ vPC += OPCODE_LENGTH(op_rshift);
NEXT_INSTRUCTION();
}
DEFINE_OPCODE(op_urshift) {
to uint32) by register shift (converted to
uint32), and puts the result in register dst.
*/
- int dst = (++vPC)->u.operand;
- JSValue val = callFrame->r((++vPC)->u.operand).jsValue();
- JSValue shift = callFrame->r((++vPC)->u.operand).jsValue();
+ 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->r(dst) = jsNumber(callFrame, val.asInt32() >> (shift.asInt32() & 0x1f));
+ callFrame->uncheckedR(dst) = jsNumber(val.asInt32() >> (shift.asInt32() & 0x1f));
else {
- JSValue result = jsNumber(callFrame, (val.toUInt32(callFrame)) >> (shift.toUInt32(callFrame) & 0x1f));
+ JSValue result = jsNumber((val.toUInt32(callFrame)) >> (shift.toUInt32(callFrame) & 0x1f));
CHECK_FOR_EXCEPTION();
- callFrame->r(dst) = result;
+ callFrame->uncheckedR(dst) = result;
}
- ++vPC;
+ vPC += OPCODE_LENGTH(op_urshift);
NEXT_INSTRUCTION();
}
DEFINE_OPCODE(op_bitand) {
and register src2 (converted to int32), and puts the result
in register dst.
*/
- int dst = (++vPC)->u.operand;
- JSValue src1 = callFrame->r((++vPC)->u.operand).jsValue();
- JSValue src2 = callFrame->r((++vPC)->u.operand).jsValue();
+ 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->r(dst) = jsNumber(callFrame, src1.asInt32() & src2.asInt32());
+ callFrame->uncheckedR(dst) = jsNumber(src1.asInt32() & src2.asInt32());
else {
- JSValue result = jsNumber(callFrame, src1.toInt32(callFrame) & src2.toInt32(callFrame));
+ JSValue result = jsNumber(src1.toInt32(callFrame) & src2.toInt32(callFrame));
CHECK_FOR_EXCEPTION();
- callFrame->r(dst) = result;
+ callFrame->uncheckedR(dst) = result;
}
- vPC += 2;
+ vPC += OPCODE_LENGTH(op_bitand);
NEXT_INSTRUCTION();
}
DEFINE_OPCODE(op_bitxor) {
and register src2 (converted to int32), and puts the result
in register dst.
*/
- int dst = (++vPC)->u.operand;
- JSValue src1 = callFrame->r((++vPC)->u.operand).jsValue();
- JSValue src2 = callFrame->r((++vPC)->u.operand).jsValue();
+ 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->r(dst) = jsNumber(callFrame, src1.asInt32() ^ src2.asInt32());
+ callFrame->uncheckedR(dst) = jsNumber(src1.asInt32() ^ src2.asInt32());
else {
- JSValue result = jsNumber(callFrame, src1.toInt32(callFrame) ^ src2.toInt32(callFrame));
+ JSValue result = jsNumber(src1.toInt32(callFrame) ^ src2.toInt32(callFrame));
CHECK_FOR_EXCEPTION();
- callFrame->r(dst) = result;
+ callFrame->uncheckedR(dst) = result;
}
- vPC += 2;
+ vPC += OPCODE_LENGTH(op_bitxor);
NEXT_INSTRUCTION();
}
DEFINE_OPCODE(op_bitor) {
and register src2 (converted to int32), and puts the
result in register dst.
*/
- int dst = (++vPC)->u.operand;
- JSValue src1 = callFrame->r((++vPC)->u.operand).jsValue();
- JSValue src2 = callFrame->r((++vPC)->u.operand).jsValue();
+ 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->r(dst) = jsNumber(callFrame, src1.asInt32() | src2.asInt32());
+ callFrame->uncheckedR(dst) = jsNumber(src1.asInt32() | src2.asInt32());
else {
- JSValue result = jsNumber(callFrame, src1.toInt32(callFrame) | src2.toInt32(callFrame));
+ JSValue result = jsNumber(src1.toInt32(callFrame) | src2.toInt32(callFrame));
CHECK_FOR_EXCEPTION();
- callFrame->r(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;
- JSValue src = callFrame->r((++vPC)->u.operand).jsValue();
- if (src.isInt32())
- callFrame->r(dst) = jsNumber(callFrame, ~src.asInt32());
- else {
- JSValue result = jsNumber(callFrame, ~src.toInt32(callFrame));
- CHECK_FOR_EXCEPTION();
- callFrame->r(dst) = result;
- }
- ++vPC;
+ vPC += OPCODE_LENGTH(op_bitor);
NEXT_INSTRUCTION();
}
DEFINE_OPCODE(op_not) {
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;
+ 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->r(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) {
JSValue baseVal = callFrame->r(base).jsValue();
- if (isInvalidParamForInstanceOf(callFrame, callFrame->codeBlock(), vPC, baseVal, exceptionValue))
- goto vm_throw;
+ ASSERT(!isInvalidParamForInstanceOf(callFrame, baseVal, exceptionValue));
- bool result = asObject(baseVal)->hasInstance(callFrame, callFrame->r(value).jsValue(), callFrame->r(baseProto).jsValue());
+ bool result = asObject(baseVal)->methodTable()->hasInstance(asObject(baseVal), callFrame, callFrame->r(value).jsValue(), callFrame->r(baseProto).jsValue());
CHECK_FOR_EXCEPTION();
- callFrame->r(dst) = jsBoolean(result);
+ callFrame->uncheckedR(dst) = jsBoolean(result);
- vPC += 5;
+ vPC += OPCODE_LENGTH(op_instanceof);
NEXT_INSTRUCTION();
}
DEFINE_OPCODE(op_typeof) {
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->r(dst) = JSValue(jsTypeStringForValue(callFrame, callFrame->r(src).jsValue()));
+ 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) {
the ECMAScript rules is "undefined", 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;
JSValue v = callFrame->r(src).jsValue();
- callFrame->r(dst) = jsBoolean(v.isCell() ? v.asCell()->structure()->typeInfo().masqueradesAsUndefined() : v.isUndefined());
+ 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) {
the ECMAScript rules is "boolean", and puts the result
in register dst.
*/
- int dst = (++vPC)->u.operand;
- int src = (++vPC)->u.operand;
- callFrame->r(dst) = jsBoolean(callFrame->r(src).jsValue().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) {
the ECMAScript rules is "number", and puts the result
in register dst.
*/
- int dst = (++vPC)->u.operand;
- int src = (++vPC)->u.operand;
- callFrame->r(dst) = jsBoolean(callFrame->r(src).jsValue().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) {
the ECMAScript rules is "string", and puts the result
in register dst.
*/
- int dst = (++vPC)->u.operand;
- int src = (++vPC)->u.operand;
- callFrame->r(dst) = jsBoolean(callFrame->r(src).jsValue().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) {
the ECMAScript rules is "object", and puts the result
in register dst.
*/
- int dst = (++vPC)->u.operand;
- int src = (++vPC)->u.operand;
- callFrame->r(dst) = jsBoolean(jsIsObjectType(callFrame->r(src).jsValue()));
+ 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) {
the ECMAScript rules is "function", and puts the result
in register dst.
*/
- int dst = (++vPC)->u.operand;
- int src = (++vPC)->u.operand;
- callFrame->r(dst) = jsBoolean(jsIsFunctionType(callFrame->r(src).jsValue()));
+ 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) {
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;
JSValue baseVal = callFrame->r(base).jsValue();
- if (isInvalidParamForIn(callFrame, callFrame->codeBlock(), vPC, baseVal, exceptionValue))
+ if (isInvalidParamForIn(callFrame, baseVal, exceptionValue))
goto vm_throw;
JSObject* baseObj = asObject(baseVal);
uint32_t i;
if (propName.getUInt32(i))
- callFrame->r(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->r(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) {
if (UNLIKELY(!resolve(callFrame, vPC, exceptionValue)))
goto vm_throw;
- vPC += 3;
+ vPC += OPCODE_LENGTH(op_resolve);
NEXT_INSTRUCTION();
}
DEFINE_OPCODE(op_resolve_skip) {
if (UNLIKELY(!resolveSkip(callFrame, vPC, exceptionValue)))
goto vm_throw;
- vPC += 4;
+ vPC += OPCODE_LENGTH(op_resolve_skip);
NEXT_INSTRUCTION();
}
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();
}
Gets the global var at global slot index and places it in register dst.
*/
- int dst = (++vPC)->u.operand;
- JSGlobalObject* scope = static_cast<JSGlobalObject*>((++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->r(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) {
Puts value into global slot index.
*/
- JSGlobalObject* scope = static_cast<JSGlobalObject*>((++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) = JSValue(callFrame->r(value).jsValue());
- ++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<JSVariableObject*>(*iter);
- callFrame->r(dst) = scope->registerAt(index);
- ++vPC;
+ JSVariableObject* scope = jsCast<JSVariableObject*>(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<JSVariableObject*>(*iter);
- scope->registerAt(index) = JSValue(callFrame->r(value).jsValue());
- ++vPC;
+ JSVariableObject* scope = jsCast<JSVariableObject*>(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) {
if (UNLIKELY(!resolveBaseAndProperty(callFrame, vPC, exceptionValue)))
goto vm_throw;
- vPC += 4;
+ vPC += OPCODE_LENGTH(op_resolve_with_base);
+ NEXT_INSTRUCTION();
+ }
+ 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
+ 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(!resolveThisAndProperty(callFrame, vPC, exceptionValue)))
+ goto vm_throw;
+
+ vPC += OPCODE_LENGTH(op_resolve_with_this);
NEXT_INSTRUCTION();
}
DEFINE_OPCODE(op_get_by_id) {
int base = vPC[2].u.operand;
int property = vPC[3].u.operand;
- CodeBlock* codeBlock = callFrame->codeBlock();
Identifier& ident = codeBlock->identifier(property);
JSValue baseValue = callFrame->r(base).jsValue();
PropertySlot slot(baseValue);
tryCacheGetByID(callFrame, codeBlock, vPC, baseValue, ident, slot);
- callFrame->r(dst) = result;
- vPC += 8;
+ callFrame->uncheckedR(dst) = result;
+ vPC += OPCODE_LENGTH(op_get_by_id);
NEXT_INSTRUCTION();
}
DEFINE_OPCODE(op_get_by_id_self) {
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());
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->r(dst) = JSValue(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) {
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));
- ASSERT(baseValue.get(callFrame, callFrame->codeBlock()->identifier(vPC[3].u.operand)) == protoObject->getDirectOffset(offset));
- callFrame->r(dst) = JSValue(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 += OPCODE_LENGTH(op_get_by_id_proto);
+ NEXT_INSTRUCTION();
+ }
+ }
+ }
- vPC += 8;
+ uncacheGetByID(codeBlock, vPC);
+ NEXT_INSTRUCTION();
+ }
+#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();
+ }
+#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;
+ 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 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(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;
- 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;
+ 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)) {
+ WriteBarrier<Structure>* it = vPC[5].u.structureChain->head();
+ size_t count = vPC[6].u.operand;
+ WriteBarrier<Structure>* 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;
+
+ 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 += OPCODE_LENGTH(op_get_by_id_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_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)
+
+ Generic property access: Gets the property named by identifier
+ property from the value base, and puts the result in register dst.
+ */
+ int dst = vPC[1].u.operand;
+ int base = vPC[2].u.operand;
+ int property = vPC[3].u.operand;
+
+ Identifier& ident = codeBlock->identifier(property);
+ JSValue baseValue = callFrame->r(base).jsValue();
+ PropertySlot slot(baseValue);
+ JSValue result = baseValue.get(callFrame, ident, slot);
+ CHECK_FOR_EXCEPTION();
+
+ 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<Structure>* it = vPC[5].u.structureChain->head();
+ size_t count = vPC[6].u.operand;
+ WriteBarrier<Structure>* 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();
}
- 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_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 = asCell(baseValue);
- Structure* structure = vPC[4].u.structure;
-
+ JSCell* baseCell = baseValue.asCell();
+ Structure* structure = vPC[4].u.structure.get();
+
if (LIKELY(baseCell->structure() == structure)) {
- RefPtr<Structure>* it = vPC[5].u.structureChain->head();
+ WriteBarrier<Structure>* it = vPC[5].u.structureChain->head();
size_t count = vPC[6].u.operand;
- RefPtr<Structure>* end = it + count;
-
+ WriteBarrier<Structure>* 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;
-
- ASSERT(baseObject->get(callFrame, callFrame->codeBlock()->identifier(vPC[3].u.operand)) == baseObject->getDirectOffset(offset));
- ASSERT(baseValue.get(callFrame, callFrame->codeBlock()->identifier(vPC[3].u.operand)) == baseObject->getDirectOffset(offset));
- callFrame->r(dst) = JSValue(baseObject->getDirectOffset(offset));
-
- vPC += 8;
+ 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(callFrame->codeBlock(), vPC);
- NEXT_INSTRUCTION();
- }
- 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)
-
- Generic property access: Gets the property named by identifier
- property from the value base, and puts the result in register dst.
- */
- int dst = vPC[1].u.operand;
- int base = vPC[2].u.operand;
- int property = vPC[3].u.operand;
-
- Identifier& ident = callFrame->codeBlock()->identifier(property);
- JSValue baseValue = callFrame->r(base).jsValue();
- PropertySlot slot(baseValue);
- JSValue result = baseValue.get(callFrame, ident, slot);
- CHECK_FOR_EXCEPTION();
-
- callFrame->r(dst) = result;
- vPC += 8;
+ 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)
int base = vPC[2].u.operand;
JSValue baseValue = callFrame->r(base).jsValue();
- if (LIKELY(isJSArray(globalData, baseValue))) {
+ if (LIKELY(isJSArray(baseValue))) {
int dst = vPC[1].u.operand;
- callFrame->r(dst) = 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)
int base = vPC[2].u.operand;
JSValue baseValue = callFrame->r(base).jsValue();
- if (LIKELY(isJSString(globalData, baseValue))) {
+ if (LIKELY(isJSString(baseValue))) {
int dst = vPC[1].u.operand;
- callFrame->r(dst) = 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();
JSValue baseValue = callFrame->r(base).jsValue();
Identifier& ident = codeBlock->identifier(property);
- PutPropertySlot slot;
- baseValue.put(callFrame, ident, callFrame->r(value).jsValue(), 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,
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<Structure>* it = vPC[6].u.structureChain->head();
-
- JSValue 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<Structure>* 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->r(value).jsValue());
+ 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,
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());
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->r(value).jsValue());
+ 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.
int base = vPC[1].u.operand;
int property = vPC[2].u.operand;
int value = vPC[3].u.operand;
+ int direct = vPC[8].u.operand;
JSValue baseValue = callFrame->r(base).jsValue();
- Identifier& ident = callFrame->codeBlock()->identifier(property);
- PutPropertySlot slot;
- baseValue.put(callFrame, ident, callFrame->r(value).jsValue(), slot);
+ 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) {
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->r(base).jsValue().toObject(callFrame);
- Identifier& ident = callFrame->codeBlock()->identifier(property);
- JSValue result = jsBoolean(baseObj->deleteProperty(callFrame, ident));
+ 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->r(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)
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;
JSValue baseValue = callFrame->r(base).jsValue();
JSValue subscript = callFrame->r(property).jsValue();
if (LIKELY(subscript.isUInt32())) {
uint32_t i = subscript.asUInt32();
- if (isJSArray(globalData, baseValue)) {
+ if (isJSArray(baseValue)) {
JSArray* jsArray = asArray(baseValue);
if (jsArray->canGetIndex(i))
result = jsArray->getIndex(i);
else
result = jsArray->JSArray::get(callFrame, i);
- } else if (isJSString(globalData, baseValue) && asString(baseValue)->canGetIndex(i))
- result = asString(baseValue)->getIndex(&callFrame->globalData(), i);
- else if (isJSByteArray(globalData, baseValue) && asByteArray(baseValue)->canAccessIndex(i))
- result = asByteArray(baseValue)->getIndex(callFrame, i);
+ } else if (isJSString(baseValue) && asString(baseValue)->canGetIndex(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->r(dst) = result;
- ++vPC;
+ callFrame->uncheckedR(dst) = result;
+ vPC += OPCODE_LENGTH(op_get_by_val);
NEXT_INSTRUCTION();
}
DEFINE_OPCODE(op_put_by_val) {
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;
JSValue baseValue = callFrame->r(base).jsValue();
JSValue subscript = callFrame->r(property).jsValue();
if (LIKELY(subscript.isUInt32())) {
uint32_t i = subscript.asUInt32();
- if (isJSArray(globalData, baseValue)) {
+ if (isJSArray(baseValue)) {
JSArray* jsArray = asArray(baseValue);
if (jsArray->canSetIndex(i))
- jsArray->setIndex(i, callFrame->r(value).jsValue());
+ jsArray->setIndex(*globalData, i, callFrame->r(value).jsValue());
else
- jsArray->JSArray::put(callFrame, i, callFrame->r(value).jsValue());
- } else if (isJSByteArray(globalData, baseValue) && asByteArray(baseValue)->canAccessIndex(i)) {
- JSByteArray* jsByteArray = asByteArray(baseValue);
- double dValue = 0;
- JSValue jsValue = callFrame->r(value).jsValue();
- if (jsValue.isInt32())
- jsByteArray->setIndex(i, jsValue.asInt32());
- else if (jsValue.getNumber(dValue))
- jsByteArray->setIndex(i, dValue);
- else
- baseValue.put(callFrame, i, jsValue);
+ jsArray->JSArray::putByIndex(jsArray, callFrame, i, callFrame->r(value).jsValue(), codeBlock->isStrictMode());
} else
- baseValue.put(callFrame, i, callFrame->r(value).jsValue());
+ 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;
+ 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) {
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->r(base).jsValue().toObject(callFrame); // may throw
JSValue subscript = callFrame->r(property).jsValue();
- JSValue result;
+ 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->r(dst) = result;
- ++vPC;
+ callFrame->uncheckedR(dst) = jsBoolean(result);
+ vPC += OPCODE_LENGTH(op_del_by_val);
NEXT_INSTRUCTION();
}
DEFINE_OPCODE(op_put_by_index) {
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->r(base).jsValue().put(callFrame, property, callFrame->r(value).jsValue());
+ 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) {
#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();
#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)
Additionally this loop instruction may terminate JS execution is
the JS timeout is reached.
*/
- int cond = (++vPC)->u.operand;
- int target = (++vPC)->u.operand;
+ 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_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 += OPCODE_LENGTH(op_loop_if_true);
NEXT_INSTRUCTION();
}
DEFINE_OPCODE(op_jtrue) {
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;
+ 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) {
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;
+ 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) {
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;
+ 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())) {
NEXT_INSTRUCTION();
}
- ++vPC;
+ vPC += OPCODE_LENGTH(op_jeq_null);
NEXT_INSTRUCTION();
}
DEFINE_OPCODE(op_jneq_null) {
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;
+ 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())) {
+ if (!srcValue.isUndefinedOrNull() && (!srcValue.isCell() || !srcValue.asCell()->structure()->typeInfo().masqueradesAsUndefined())) {
vPC += target;
NEXT_INSTRUCTION();
}
- ++vPC;
+ vPC += OPCODE_LENGTH(op_jneq_null);
NEXT_INSTRUCTION();
}
DEFINE_OPCODE(op_jneq_ptr) {
Jumps to offset target from the current instruction, if the value r is equal
to ptr, using pointer equality.
*/
- int src = (++vPC)->u.operand;
- JSValue ptr = JSValue((++vPC)->u.jsCell);
- int target = (++vPC)->u.operand;
+ int src = vPC[1].u.operand;
+ int target = vPC[3].u.operand;
JSValue srcValue = callFrame->r(src).jsValue();
- if (srcValue != ptr) {
+ 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) {
Additionally this loop instruction may terminate JS execution is
the JS timeout is reached.
*/
- JSValue src1 = callFrame->r((++vPC)->u.operand).jsValue();
- JSValue src2 = callFrame->r((++vPC)->u.operand).jsValue();
- 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<true>(callFrame, src1, src2);
CHECK_FOR_EXCEPTION();
if (result) {
NEXT_INSTRUCTION();
}
- ++vPC;
+ vPC += OPCODE_LENGTH(op_loop_if_less);
NEXT_INSTRUCTION();
}
DEFINE_OPCODE(op_loop_if_lesseq) {
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.
+ 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<true>(callFrame, src1, src2);
+ CHECK_FOR_EXCEPTION();
+
+ if (result) {
+ vPC += target;
+ CHECK_FOR_TIMEOUT();
+ NEXT_INSTRUCTION();
+ }
+
+ vPC += OPCODE_LENGTH(op_loop_if_lesseq);
+ NEXT_INSTRUCTION();
+ }
+ DEFINE_OPCODE(op_loop_if_greater) {
+ /* loop_if_greater 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.
+
+ 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<false>(callFrame, src2, src1);
+ CHECK_FOR_EXCEPTION();
+
+ if (result) {
+ vPC += target;
+ CHECK_FOR_TIMEOUT();
+ NEXT_INSTRUCTION();
+ }
+
+ vPC += OPCODE_LENGTH(op_loop_if_greater);
+ NEXT_INSTRUCTION();
+ }
+ DEFINE_OPCODE(op_loop_if_greatereq) {
+ /* loop_if_greatereq 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.
+
+ 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<false>(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_jless) {
+ /* jless 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 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<true>(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<true>(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<false>(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<false>(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<true>(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)->u.operand).jsValue();
- JSValue src2 = callFrame->r((++vPC)->u.operand).jsValue();
- int target = (++vPC)->u.operand;
-
- bool result = jsLessEq(callFrame, src1, src2);
+ 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<true>(callFrame, src1, src2);
CHECK_FOR_EXCEPTION();
- if (result) {
+ if (!result) {
vPC += target;
- CHECK_FOR_TIMEOUT();
NEXT_INSTRUCTION();
}
-
- ++vPC;
+
+ vPC += OPCODE_LENGTH(op_jnlesseq);
NEXT_INSTRUCTION();
}
- DEFINE_OPCODE(op_jnless) {
- /* jnless src1(r) src2(r) target(offset)
+ DEFINE_OPCODE(op_jngreater) {
+ /* jngreater 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.
*/
- JSValue src1 = callFrame->r((++vPC)->u.operand).jsValue();
- JSValue src2 = callFrame->r((++vPC)->u.operand).jsValue();
- 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<false>(callFrame, src2, src1);
CHECK_FOR_EXCEPTION();
if (!result) {
NEXT_INSTRUCTION();
}
- ++vPC;
+ vPC += OPCODE_LENGTH(op_jngreater);
NEXT_INSTRUCTION();
}
- DEFINE_OPCODE(op_jnlesseq) {
- /* jnlesseq src1(r) src2(r) target(offset)
+ DEFINE_OPCODE(op_jngreatereq) {
+ /* jngreatereq src1(r) src2(r) target(offset)
- Checks whether register src1 is less than or equal to
- register src2, as with the ECMAScript '<=' operator,
+ 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)->u.operand).jsValue();
- JSValue src2 = callFrame->r((++vPC)->u.operand).jsValue();
- 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<false>(callFrame, src2, src1);
CHECK_FOR_EXCEPTION();
if (!result) {
NEXT_INSTRUCTION();
}
- ++vPC;
+ vPC += OPCODE_LENGTH(op_jngreatereq);
NEXT_INSTRUCTION();
}
DEFINE_OPCODE(op_switch_imm) {
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;
- JSValue scrutinee = callFrame->r((++vPC)->u.operand).jsValue();
+ 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 += callFrame->codeBlock()->immediateSwitchJumpTable(tableIndex).offsetForValue(scrutinee.asInt32(), defaultOffset);
- else {
- double value;
- int32_t intValue;
- if (scrutinee.getNumber(value) && ((intValue = static_cast<int32_t>(value)) == value))
- vPC += callFrame->codeBlock()->immediateSwitchJumpTable(tableIndex).offsetForValue(intValue, defaultOffset);
- else
- vPC += defaultOffset;
- }
+ vPC += codeBlock->immediateSwitchJumpTable(tableIndex).offsetForValue(scrutinee.asInt32(), defaultOffset);
+ else if (scrutinee.isDouble() && scrutinee.asDouble() == static_cast<int32_t>(scrutinee.asDouble()))
+ vPC += codeBlock->immediateSwitchJumpTable(tableIndex).offsetForValue(static_cast<int32_t>(scrutinee.asDouble()), defaultOffset);
+ else
+ vPC += defaultOffset;
NEXT_INSTRUCTION();
}
DEFINE_OPCODE(op_switch_char) {
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;
- JSValue scrutinee = callFrame->r((++vPC)->u.operand).jsValue();
+ 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();
}
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;
- JSValue scrutinee = callFrame->r((++vPC)->u.operand).jsValue();
+ 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) {
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->r(dst) = JSValue(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) {
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->r(dst) = JSValue(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
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;
-
+ 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;
- JSValue thisValue = argv[0].jsValue();
- 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<JSFunction*>(funcVal));
- if (thisValue == globalObject && funcVal == globalObject->evalFunction()) {
- JSValue result = callEval(callFrame, registerFile, argv, argCount, registerOffset, exceptionValue);
- if (exceptionValue)
+ JSValue result = eval(newCallFrame);
+ if ((exceptionValue = globalData->exception))
goto vm_throw;
- callFrame->r(dst) = result;
+ functionReturnValue = result;
- vPC += 5;
+ vPC += OPCODE_LENGTH(op_call_eval);
NEXT_INSTRUCTION();
}
// 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.
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;
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;
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<JSFunction*>(v));
+ codeBlock = newCodeBlock;
+ ASSERT(codeBlock == callFrame->codeBlock());
+ *topCallFrameSlot = callFrame;
vPC = newCodeBlock->instructions().begin();
#if ENABLE(OPCODE_STATS)
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.
- JSValue thisValue = thisRegister->jsValue();
- if (thisValue == jsNull())
- thisValue = callFrame->globalThisValue();
-
+ 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->r(dst) = 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_load_varargs) {
- int argCountDst = (++vPC)->u.operand;
- int argsOffset = (++vPC)->u.operand;
-
- JSValue arguments = callFrame->r(argsOffset).jsValue();
- int32_t argCount = 0;
- if (!arguments) {
- argCount = (uint32_t)(callFrame->argumentCount()) - 1;
- int32_t sizeDelta = argsOffset + argCount + RegisterFile::CallFrameHeaderSize;
- Register* newEnd = callFrame->registers() + sizeDelta;
- if (!registerFile->grow(newEnd) || ((newEnd - callFrame->registers()) != sizeDelta)) {
- exceptionValue = createStackOverflowError(callFrame);
- goto vm_throw;
- }
- int32_t expectedParams = callFrame->callee()->body()->parameterCount();
- int32_t inplaceArgs = min(argCount, expectedParams);
- int32_t i = 0;
- Register* argStore = callFrame->registers() + argsOffset;
-
- // First step is to copy the "expected" parameters from their normal location relative to the callframe
- for (; i < inplaceArgs; i++)
- argStore[i] = callFrame->registers()[i - RegisterFile::CallFrameHeaderSize - expectedParams];
- // Then we copy any additional arguments that may be further up the stack ('-1' to account for 'this')
- for (; i < argCount; i++)
- argStore[i] = callFrame->registers()[i - RegisterFile::CallFrameHeaderSize - expectedParams - argCount - 1];
- } else if (!arguments.isUndefinedOrNull()) {
- if (!arguments.isObject()) {
- exceptionValue = createInvalidParamError(callFrame, "Function.prototype.apply", arguments, vPC - callFrame->codeBlock()->instructions().begin(), callFrame->codeBlock());
- goto vm_throw;
- }
- if (asObject(arguments)->classInfo() == &Arguments::info) {
- Arguments* args = asArguments(arguments);
- argCount = args->numProvidedArguments(callFrame);
- int32_t sizeDelta = argsOffset + argCount + RegisterFile::CallFrameHeaderSize;
- Register* newEnd = callFrame->registers() + sizeDelta;
- if (!registerFile->grow(newEnd) || ((newEnd - callFrame->registers()) != sizeDelta)) {
- exceptionValue = createStackOverflowError(callFrame);
- goto vm_throw;
- }
- args->copyToRegisters(callFrame, callFrame->registers() + argsOffset, argCount);
- } else if (isJSArray(&callFrame->globalData(), arguments)) {
- JSArray* array = asArray(arguments);
- argCount = array->length();
- int32_t sizeDelta = argsOffset + argCount + RegisterFile::CallFrameHeaderSize;
- Register* newEnd = callFrame->registers() + sizeDelta;
- if (!registerFile->grow(newEnd) || ((newEnd - callFrame->registers()) != sizeDelta)) {
- exceptionValue = createStackOverflowError(callFrame);
- goto vm_throw;
- }
- array->copyToRegisters(callFrame, callFrame->registers() + argsOffset, argCount);
- } else if (asObject(arguments)->inherits(&JSArray::info)) {
- JSObject* argObject = asObject(arguments);
- argCount = argObject->get(callFrame, callFrame->propertyNames().length).toUInt32(callFrame);
- int32_t sizeDelta = argsOffset + argCount + RegisterFile::CallFrameHeaderSize;
- Register* newEnd = callFrame->registers() + sizeDelta;
- if (!registerFile->grow(newEnd) || ((newEnd - callFrame->registers()) != sizeDelta)) {
- exceptionValue = createStackOverflowError(callFrame);
- goto vm_throw;
- }
- Register* argsBuffer = callFrame->registers() + argsOffset;
- for (int32_t i = 0; i < argCount; ++i) {
- argsBuffer[i] = asObject(arguments)->get(callFrame, i);
- CHECK_FOR_EXCEPTION();
- }
- } else {
- if (!arguments.isObject()) {
- exceptionValue = createInvalidParamError(callFrame, "Function.prototype.apply", arguments, vPC - callFrame->codeBlock()->instructions().begin(), callFrame->codeBlock());
- goto vm_throw;
- }
- }
- }
- CHECK_FOR_EXCEPTION();
- callFrame->r(argCountDst) = Register::withInt(argCount + 1);
- ++vPC;
- NEXT_INSTRUCTION();
- }
DEFINE_OPCODE(op_call_varargs) {
- /* call_varargs dst(r) func(r) argCountReg(r) baseRegisterOffset(n)
+ /* call_varargs callee(r) thisValue(r) arguments(r) firstFreeRegister(n)
Perform a function call with a dynamic set of arguments.
dst is where op_ret should store its result.
*/
- int dst = vPC[1].u.operand;
- int func = vPC[2].u.operand;
- int argCountReg = vPC[3].u.operand;
- int registerOffset = vPC[4].u.operand;
-
- JSValue v = callFrame->r(func).jsValue();
- int argCount = callFrame->r(argCountReg).i();
- registerOffset += argCount;
+ 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 = 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;
-
- callFrame = slideRegisterWindowForCall(newCodeBlock, registerFile, callFrame, registerOffset, argCount);
- if (UNLIKELY(!callFrame)) {
- callFrame = previousCallFrame;
+
+ 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;
}
-
- callFrame->init(newCodeBlock, vPC + 5, callDataScopeChain, previousCallFrame, dst, argCount, asFunction(v));
+
+ newCallFrame->init(newCodeBlock, vPC + OPCODE_LENGTH(op_call_varargs), callDataScopeChain, callFrame, argCount, jsCast<JSFunction*>(v));
+ codeBlock = newCodeBlock;
+ callFrame = newCallFrame;
+ ASSERT(codeBlock == callFrame->codeBlock());
+ *topCallFrameSlot = callFrame;
vPC = newCodeBlock->instructions().begin();
-
+
#if ENABLE(OPCODE_STATS)
OpcodeStats::resetLastInstruction();
#endif
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.
- JSValue thisValue = thisRegister->jsValue();
- if (thisValue == jsNull())
- thisValue = callFrame->globalThisValue();
+ newCallFrame->init(0, vPC + OPCODE_LENGTH(op_call_varargs), 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->r(dst) = returnValue;
+ functionReturnValue = returnValue;
- vPC += 5;
+ vPC += OPCODE_LENGTH(op_call_varargs);
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_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->r(src).jsValue())->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());
- if (callFrame->optionalCalleeArguments())
- 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
register base to those of the calling function.
*/
- int result = (++vPC)->u.operand;
-
- if (callFrame->codeBlock()->needsFullScopeChain())
- callFrame->scopeChain()->deref();
+ int result = vPC[1].u.operand;
JSValue returnValue = callFrame->r(result).jsValue();
- vPC = callFrame->returnPC();
- int dst = callFrame->returnValueRegister();
+ if (UNLIKELY(!returnValue.isObject()))
+ returnValue = callFrame->r(vPC[2].u.operand).jsValue();
+
+ vPC = callFrame->returnVPC();
callFrame = callFrame->callerFrame();
-
+
if (callFrame->hasHostCallFrameFlag())
return returnValue;
- callFrame->r(dst) = 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->r(i) = jsUndefined();
+ callFrame->uncheckedR(i) = jsUndefined();
- ++vPC;
+ vPC += OPCODE_LENGTH(op_enter);
NEXT_INSTRUCTION();
}
- DEFINE_OPCODE(op_enter_with_activation) {
- /* enter_with_activation dst(r)
+ DEFINE_OPCODE(op_create_activation) {
+ /* create_activation dst(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.
+ 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<FunctionExecutable*>(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.
+ */
+
+ callFrame->uncheckedR(vPC[1].u.operand) = JSValue(callFrame->callee());
+
+ vPC += OPCODE_LENGTH(op_get_callee);
+ NEXT_INSTRUCTION();
+ }
+ DEFINE_OPCODE(op_create_this) {
+ /* op_create_this this(r) proto(r)
+
+ 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();
+ int thisRegister = vPC[1].u.operand;
+ int protoRegister = vPC[2].u.operand;
- for (size_t count = codeBlock->m_numVars; i < count; ++i)
- callFrame->r(i) = jsUndefined();
+ JSFunction* constructor = jsCast<JSFunction*>(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<FunctionBodyNode*>(codeBlock->ownerNode()));
- callFrame->r(dst) = JSValue(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) {
block.
*/
- int thisRegister = (++vPC)->u.operand;
+ int thisRegister = vPC[1].u.operand;
JSValue thisVal = callFrame->r(thisRegister).jsValue();
- if (thisVal.needsThisConversion())
- callFrame->r(thisRegister) = JSValue(thisVal.toThisObject(callFrame));
+ if (thisVal.isPrimitive())
+ callFrame->uncheckedR(thisRegister) = JSValue(thisVal.toThisObject(callFrame));
- ++vPC;
+ vPC += OPCODE_LENGTH(op_convert_this);
NEXT_INSTRUCTION();
}
- DEFINE_OPCODE(op_init_arguments) {
- /* create_arguments
+ DEFINE_OPCODE(op_init_lazy_reg) {
+ /* init_lazy_reg dst(r)
- Initialises the arguments object reference to null to ensure
- we can correctly detect that we need to create it later (or
- avoid creating it altogether).
+ 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.
*/
- callFrame->r(RegisterFile::ArgumentsRegister) = JSValue();
- ++vPC;
+ int dst = vPC[1].u.operand;
+
+ callFrame->uncheckedR(dst) = JSValue();
+ vPC += OPCODE_LENGTH(op_init_lazy_reg);
NEXT_INSTRUCTION();
}
DEFINE_OPCODE(op_create_arguments) {
- /* 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.
*/
- if (!callFrame->r(RegisterFile::ArgumentsRegister).jsValue()) {
- Arguments* arguments = new (globalData) Arguments(callFrame);
- callFrame->setCalleeArguments(arguments);
- callFrame->r(RegisterFile::ArgumentsRegister) = JSValue(arguments);
- }
- ++vPC;
+ 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
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;
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;
- JSValue prototype = callFrame->r(proto).jsValue();
- if (prototype.isObject())
- structure = asObject(prototype)->inheritorID();
- else
- structure = callDataScopeChain->globalObject()->emptyObjectStructure();
- JSObject* newObject = new (globalData) JSObject(structure);
- callFrame->r(thisRegister) = JSValue(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;
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<JSFunction*>(v));
+ codeBlock = newCodeBlock;
+ *topCallFrameSlot = callFrame;
vPC = newCodeBlock->instructions().begin();
-
#if ENABLE(OPCODE_STATS)
OpcodeStats::resetLastInstruction();
#endif
}
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));
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->r(dst) = JSValue(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;
- if (LIKELY(callFrame->r(dst).jsValue().isObject())) {
- vPC += 3;
- NEXT_INSTRUCTION();
- }
-
- int override = vPC[2].u.operand;
- callFrame->r(dst) = callFrame->r(override);
+ int src = vPC[2].u.operand;
+ int count = vPC[3].u.operand;
- vPC += 3;
- NEXT_INSTRUCTION();
- }
- DEFINE_OPCODE(op_strcat) {
- int dst = (++vPC)->u.operand;
- int src = (++vPC)->u.operand;
- int count = (++vPC)->u.operand;
-
- callFrame->r(dst) = concatenateStrings(callFrame, &callFrame->registers()[src], count);
- ++vPC;
+ 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)->u.operand;
- int src = (++vPC)->u.operand;
+ int dst = vPC[1].u.operand;
+ int src = vPC[2].u.operand;
- callFrame->r(dst) = callFrame->r(src).jsValue().toPrimitive(callFrame);
- ++vPC;
+ callFrame->uncheckedR(dst) = callFrame->r(src).jsValue().toPrimitive(callFrame);
+ vPC += OPCODE_LENGTH(op_to_primitive);
NEXT_INSTRUCTION();
}
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;
+ int scope = vPC[1].u.operand;
JSValue v = callFrame->r(scope).jsValue();
JSObject* o = v.toObject(callFrame);
CHECK_FOR_EXCEPTION();
- callFrame->r(scope) = JSValue(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) {
*/
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->r(dst) = JSPropertyNameIterator::create(callFrame, callFrame->r(base).jsValue());
- ++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;
+ 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();
- if (JSValue temp = it->next(callFrame)) {
- CHECK_FOR_TIMEOUT();
- callFrame->r(dst) = JSValue(temp);
- vPC += target;
- NEXT_INSTRUCTION();
+ 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) {
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--)
vPC += target;
NEXT_INSTRUCTION();
}
-#if HAVE(COMPUTED_GOTO)
+#if ENABLE(COMPUTED_GOTO_CLASSIC_INTERPRETER)
// Appease GCC
goto *(&&skip_new_scope);
#endif
*/
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) {
*/
ASSERT(exceptionValue);
ASSERT(!globalData->exception);
- int ex = (++vPC)->u.operand;
- callFrame->r(ex) = exceptionValue;
+ int ex = vPC[1].u.operand;
+ callFrame->uncheckedR(ex) = exceptionValue;
exceptionValue = JSValue();
- ++vPC;
+ vPC += OPCODE_LENGTH(op_catch);
NEXT_INSTRUCTION();
}
DEFINE_OPCODE(op_throw) {
else the script returns control to the nearest native caller.
*/
- int ex = (++vPC)->u.operand;
+ int ex = vPC[1].u.operand;
exceptionValue = callFrame->r(ex).jsValue();
- handler = throwException(callFrame, exceptionValue, vPC - callFrame->codeBlock()->instructions().begin(), true);
- if (!handler) {
- *exception = exceptionValue;
- return jsNull();
- }
+ handler = throwException(callFrame, exceptionValue, vPC - codeBlock->instructions().begin());
+ if (!handler)
+ return throwError(callFrame, exceptionValue);
- vPC = callFrame->codeBlock()->instructions().begin() + handler->target;
+ 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->r(dst) = JSValue(Error::create(callFrame, (ErrorType)type, callFrame->r(message).jsValue().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)
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;
+ 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;
+ int base = vPC[1].u.operand;
+ int property = vPC[2].u.operand;
+ int getterReg = vPC[3].u.operand;
+ int setterReg = vPC[4].u.operand;
ASSERT(callFrame->r(base).jsValue().isObject());
JSObject* baseObj = asObject(callFrame->r(base).jsValue());
- Identifier& ident = callFrame->codeBlock()->identifier(property);
- ASSERT(callFrame->r(function).jsValue().isObject());
- baseObj->defineGetter(callFrame, ident, asObject(callFrame->r(function).jsValue()));
-
- ++vPC;
- NEXT_INSTRUCTION();
- }
- DEFINE_OPCODE(op_put_setter) {
- /* put_setter base(r) property(id) function(r)
+ Identifier& ident = codeBlock->identifier(property);
- 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.
+ GetterSetter* accessor = GetterSetter::create(callFrame);
- 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;
+ 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());
- ASSERT(callFrame->r(base).jsValue().isObject());
- JSObject* baseObj = asObject(callFrame->r(base).jsValue());
- Identifier& ident = callFrame->codeBlock()->identifier(property);
- ASSERT(callFrame->r(function).jsValue().isObject());
- baseObj->defineSetter(callFrame, ident, asObject(callFrame->r(function).jsValue()));
+ 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;
+ vPC += OPCODE_LENGTH(op_put_getter_setter);
NEXT_INSTRUCTION();
}
DEFINE_OPCODE(op_method_check) {
vPC++;
NEXT_INSTRUCTION();
}
- DEFINE_OPCODE(op_jsr) {
- /* jsr retAddrDst(r) target(offset)
-
- 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->r(retAddrDst) = vPC + 1;
-
- vPC += target;
- 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->r(retAddrSrc).vPC();
- NEXT_INSTRUCTION();
- }
DEFINE_OPCODE(op_debug) {
/* debug debugHookID(n) firstLine(n) lastLine(n)
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>(debugHookID), firstLine, lastLine);
- ++vPC;
+ vPC += OPCODE_LENGTH(op_debug);
NEXT_INSTRUCTION();
}
DEFINE_OPCODE(op_profile_will_call) {
if (*enabledProfilerReference)
(*enabledProfilerReference)->willExecute(callFrame, callFrame->r(function).jsValue());
- vPC += 2;
+ vPC += OPCODE_LENGTH(op_profile_will_call);
NEXT_INSTRUCTION();
}
DEFINE_OPCODE(op_profile_did_call) {
if (*enabledProfilerReference)
(*enabledProfilerReference)->didExecute(callFrame, callFrame->r(function).jsValue());
- vPC += 2;
+ vPC += OPCODE_LENGTH(op_profile_did_call);
NEXT_INSTRUCTION();
}
vm_throw: {
// 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
-#endif // USE(INTERPRETER)
#undef NEXT_INSTRUCTION
#undef DEFINE_OPCODE
#undef CHECK_FOR_EXCEPTION
#undef CHECK_FOR_TIMEOUT
+#endif // ENABLE(CLASSIC_INTERPRETER)
}
-JSValue 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();
- if (!functionCallFrame->r(argumentsIndex).jsValue()) {
- Arguments* arguments = new (callFrame) Arguments(functionCallFrame);
- functionCallFrame->setCalleeArguments(arguments);
- functionCallFrame->r(RegisterFile::ArgumentsRegister) = JSValue(arguments);
- }
- return functionCallFrame->r(argumentsIndex).jsValue();
- }
-
- Arguments* arguments = functionCallFrame->optionalCalleeArguments();
- if (!arguments) {
- arguments = new (functionCallFrame) Arguments(functionCallFrame);
- arguments->copyRegisters();
- callFrame->setCalleeArguments(arguments);
- }
-
- return 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;
+ }
+
+ Arguments* arguments = Arguments::create(functionCallFrame->globalData(), functionCallFrame);
+ arguments->tearOff(functionCallFrame);
+ return JSValue(arguments);
}
-JSValue 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();
-
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;
}
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;
}
+void Interpreter::enableSampler()
+{
+#if ENABLE(OPCODE_SAMPLING)
+ if (!m_sampler) {
+ m_sampler = adoptPtr(new SamplingTool(this));
+ m_sampler->setup();
+ }
+#endif
+}
+void Interpreter::dumpSampleData(ExecState* exec)
+{
+#if ENABLE(OPCODE_SAMPLING)
+ if (m_sampler)
+ m_sampler->dump(exec);
+#else
+ UNUSED_PARAM(exec);
+#endif
+}
+void Interpreter::startSampling()
+{
+#if ENABLE(SAMPLING_THREAD)
+ if (!m_sampleEntryDepth)
+ SamplingThread::start();
+
+ m_sampleEntryDepth++;
+#endif
+}
+void Interpreter::stopSampling()
+{
+#if ENABLE(SAMPLING_THREAD)
+ m_sampleEntryDepth--;
+ if (!m_sampleEntryDepth)
+ SamplingThread::stop();
+#endif
+}
+
} // namespace JSC
projects / apple / javascriptcore.git / blobdiff