static ALWAYS_INLINE JSValue* callDefaultValueFunction(ExecState* exec, const JSObject* object, const Identifier& propertyName)
{
JSValue* function = object->get(exec, propertyName);
CallData callData;
CallType callType = function->getCallData(callData);
if (callType == CallTypeNone)
return exec->exception();
// Prevent "toString" and "valueOf" from observing execution if an exception
// is pending.
if (exec->hadException())
return exec->exception();
JSValue* result = call(exec, function, callType, callData, const_cast<JSObject*>(object), exec->emptyList());
ASSERT(!result->isGetterSetter());
if (exec->hadException())
return exec->exception();
if (result->isObject())
return noValue();
return result;
}
ScriptValue ScriptController::evaluate(const ScriptSourceCode& sourceCode)
{
// evaluate code. Returns the JS return value or 0
// if there was none, an error occured or the type couldn't be converted.
const SourceCode& jsSourceCode = sourceCode.jsSourceCode();
initScriptIfNeeded();
// inlineCode is true for <a href="javascript:doSomething()">
// and false for <script>doSomething()</script>. Check if it has the
// expected value in all cases.
// See smart window.open policy for where this is used.
ExecState* exec = m_windowShell->window()->globalExec();
const String* savedSourceURL = m_sourceURL;
String sourceURL = jsSourceCode.provider()->url();
m_sourceURL = &sourceURL;
JSLock lock(false);
// Evaluating the JavaScript could cause the frame to be deallocated
// so we start the keep alive timer here.
m_frame->keepAlive();
m_windowShell->window()->startTimeoutCheck();
Completion comp = JSC::evaluate(exec, exec->dynamicGlobalObject()->globalScopeChain(), jsSourceCode, m_windowShell);
m_windowShell->window()->stopTimeoutCheck();
if (comp.complType() == Normal || comp.complType() == ReturnValue) {
m_sourceURL = savedSourceURL;
return comp.value();
}
if (comp.complType() == Throw)
reportException(exec, comp.value());
m_sourceURL = savedSourceURL;
return noValue();
}
static JSValuePtr showModalDialog(ExecState* exec, Frame* frame, const String& url, JSValuePtr dialogArgs, const String& featureArgs)
{
if (!canShowModalDialogNow(frame) || !allowPopUp(exec))
return jsUndefined();
const HashMap<String, String> features = parseModalDialogFeatures(featureArgs);
const bool trusted = false;
// The following features from Microsoft's documentation are not implemented:
// - default font settings
// - width, height, left, and top specified in units other than "px"
// - edge (sunken or raised, default is raised)
// - dialogHide: trusted && boolFeature(features, "dialoghide"), makes dialog hide when you print
// - help: boolFeature(features, "help", true), makes help icon appear in dialog (what does it do on Windows?)
// - unadorned: trusted && boolFeature(features, "unadorned");
if (!frame)
return jsUndefined();
FloatRect screenRect = screenAvailableRect(frame->view());
WindowFeatures wargs;
wargs.width = WindowFeatures::floatFeature(features, "dialogwidth", 100, screenRect.width(), 620); // default here came from frame size of dialog in MacIE
wargs.widthSet = true;
wargs.height = WindowFeatures::floatFeature(features, "dialogheight", 100, screenRect.height(), 450); // default here came from frame size of dialog in MacIE
wargs.heightSet = true;
wargs.x = WindowFeatures::floatFeature(features, "dialogleft", screenRect.x(), screenRect.right() - wargs.width, -1);
wargs.xSet = wargs.x > 0;
wargs.y = WindowFeatures::floatFeature(features, "dialogtop", screenRect.y(), screenRect.bottom() - wargs.height, -1);
wargs.ySet = wargs.y > 0;
if (WindowFeatures::boolFeature(features, "center", true)) {
if (!wargs.xSet) {
wargs.x = screenRect.x() + (screenRect.width() - wargs.width) / 2;
wargs.xSet = true;
}
if (!wargs.ySet) {
wargs.y = screenRect.y() + (screenRect.height() - wargs.height) / 2;
wargs.ySet = true;
}
}
wargs.dialog = true;
wargs.resizable = WindowFeatures::boolFeature(features, "resizable");
wargs.scrollbarsVisible = WindowFeatures::boolFeature(features, "scroll", true);
wargs.statusBarVisible = WindowFeatures::boolFeature(features, "status", !trusted);
wargs.menuBarVisible = false;
wargs.toolBarVisible = false;
wargs.locationBarVisible = false;
wargs.fullscreen = false;
Frame* dialogFrame = createWindow(exec, frame, url, "", wargs, dialogArgs);
if (!dialogFrame)
return jsUndefined();
JSDOMWindow* dialogWindow = toJSDOMWindow(dialogFrame);
// Get the return value either just before clearing the dialog window's
// properties (in JSDOMWindowBase::clear), or when on return from runModal.
JSValuePtr returnValue = noValue();
dialogWindow->setReturnValueSlot(&returnValue);
dialogFrame->page()->chrome()->runModal();
dialogWindow->setReturnValueSlot(0);
// If we don't have a return value, get it now.
// Either JSDOMWindowBase::clear was not called yet, or there was no return value,
// and in that case, there's no harm in trying again (no benefit either).
if (!returnValue)
returnValue = dialogWindow->getDirect(Identifier(exec, "returnValue"));
return returnValue ? returnValue : jsUndefined();
}
JSValuePtr JSCell::getJSNumber()
{
return noValue();
}
void JIT::compileOpCall(OpcodeID opcodeID, Instruction* instruction, unsigned callLinkInfoIndex)
{
int dst = instruction[1].u.operand;
int callee = instruction[2].u.operand;
int argCount = instruction[3].u.operand;
int registerOffset = instruction[4].u.operand;
// Handle eval
Jump wasEval;
if (opcodeID == op_call_eval) {
emitGetVirtualRegister(callee, X86::ecx);
compileOpCallEvalSetupArgs(instruction);
emitCTICall(Interpreter::cti_op_call_eval);
wasEval = jnePtr(X86::eax, ImmPtr(JSValuePtr::encode(JSImmediate::impossibleValue())));
}
// This plants a check for a cached JSFunction value, so we can plant a fast link to the callee.
// This deliberately leaves the callee in ecx, used when setting up the stack frame below
emitGetVirtualRegister(callee, X86::ecx);
DataLabelPtr addressOfLinkedFunctionCheck;
Jump jumpToSlow = jnePtrWithPatch(X86::ecx, addressOfLinkedFunctionCheck, ImmPtr(JSValuePtr::encode(JSImmediate::impossibleValue())));
addSlowCase(jumpToSlow);
ASSERT(differenceBetween(addressOfLinkedFunctionCheck, jumpToSlow) == patchOffsetOpCallCompareToJump);
m_callStructureStubCompilationInfo[callLinkInfoIndex].hotPathBegin = addressOfLinkedFunctionCheck;
// The following is the fast case, only used whan a callee can be linked.
// In the case of OpConstruct, call out to a cti_ function to create the new object.
if (opcodeID == op_construct) {
int proto = instruction[5].u.operand;
int thisRegister = instruction[6].u.operand;
emitPutJITStubArg(X86::ecx, 1);
emitPutJITStubArgFromVirtualRegister(proto, 4, X86::eax);
emitCTICall(Interpreter::cti_op_construct_JSConstruct);
emitPutVirtualRegister(thisRegister);
emitGetVirtualRegister(callee, X86::ecx);
}
// Fast version of stack frame initialization, directly relative to edi.
// Note that this omits to set up RegisterFile::CodeBlock, which is set in the callee
storePtr(ImmPtr(JSValuePtr::encode(noValue())), Address(callFrameRegister, (registerOffset + RegisterFile::OptionalCalleeArguments) * static_cast<int>(sizeof(Register))));
storePtr(X86::ecx, Address(callFrameRegister, (registerOffset + RegisterFile::Callee) * static_cast<int>(sizeof(Register))));
loadPtr(Address(X86::ecx, FIELD_OFFSET(JSFunction, m_scopeChain) + FIELD_OFFSET(ScopeChain, m_node)), X86::edx); // newScopeChain
store32(Imm32(argCount), Address(callFrameRegister, (registerOffset + RegisterFile::ArgumentCount) * static_cast<int>(sizeof(Register))));
storePtr(callFrameRegister, Address(callFrameRegister, (registerOffset + RegisterFile::CallerFrame) * static_cast<int>(sizeof(Register))));
storePtr(X86::edx, Address(callFrameRegister, (registerOffset + RegisterFile::ScopeChain) * static_cast<int>(sizeof(Register))));
addPtr(Imm32(registerOffset * sizeof(Register)), callFrameRegister);
// Call to the callee
m_callStructureStubCompilationInfo[callLinkInfoIndex].hotPathOther = emitNakedCall(reinterpret_cast<void*>(unreachable));
if (opcodeID == op_call_eval)
wasEval.link(this);
// Put the return value in dst. In the interpreter, op_ret does this.
emitPutVirtualRegister(dst);
#if ENABLE(CODEBLOCK_SAMPLING)
storePtr(ImmPtr(m_codeBlock), m_interpreter->sampler()->codeBlockSlot());
#endif
}
JSValue* JSPropertyNameIterator::toPrimitive(ExecState*, PreferredPrimitiveType) const
{
ASSERT_NOT_REACHED();
return noValue();
}
void JIT::compileOpCall(OpcodeID opcodeID, Instruction* instruction, unsigned callLinkInfoIndex)
{
int dst = instruction[1].u.operand;
int callee = instruction[2].u.operand;
int argCount = instruction[3].u.operand;
int registerOffset = instruction[4].u.operand;
// Handle eval
JmpSrc wasEval;
if (opcodeID == op_call_eval) {
emitGetVirtualRegister(callee, X86::ecx);
compileOpCallEvalSetupArgs(instruction);
emitCTICall(Interpreter::cti_op_call_eval);
__ cmpl_ir(asInteger(JSImmediate::impossibleValue()), X86::eax);
wasEval = __ jne();
}
// This plants a check for a cached JSFunction value, so we can plant a fast link to the callee.
// This deliberately leaves the callee in ecx, used when setting up the stack frame below
emitGetVirtualRegister(callee, X86::ecx);
__ cmpl_ir_force32(asInteger(JSImmediate::impossibleValue()), X86::ecx);
JmpDst addressOfLinkedFunctionCheck = __ label();
addSlowCase(__ jne());
ASSERT(X86Assembler::getDifferenceBetweenLabels(addressOfLinkedFunctionCheck, __ label()) == repatchOffsetOpCallCall);
m_callStructureStubCompilationInfo[callLinkInfoIndex].hotPathBegin = addressOfLinkedFunctionCheck;
// The following is the fast case, only used whan a callee can be linked.
// In the case of OpConstruct, call out to a cti_ function to create the new object.
if (opcodeID == op_construct) {
int proto = instruction[5].u.operand;
int thisRegister = instruction[6].u.operand;
emitPutJITStubArg(X86::ecx, 1);
emitPutJITStubArgFromVirtualRegister(proto, 4, X86::eax);
emitCTICall(Interpreter::cti_op_construct_JSConstruct);
emitPutVirtualRegister(thisRegister);
emitGetVirtualRegister(callee, X86::ecx);
}
// Fast version of stack frame initialization, directly relative to edi.
// Note that this omits to set up RegisterFile::CodeBlock, which is set in the callee
__ movl_i32m(asInteger(noValue()), (registerOffset + RegisterFile::OptionalCalleeArguments) * static_cast<int>(sizeof(Register)), X86::edi);
__ movl_rm(X86::ecx, (registerOffset + RegisterFile::Callee) * static_cast<int>(sizeof(Register)), X86::edi);
__ movl_mr(FIELD_OFFSET(JSFunction, m_scopeChain) + FIELD_OFFSET(ScopeChain, m_node), X86::ecx, X86::edx); // newScopeChain
__ movl_i32m(argCount, (registerOffset + RegisterFile::ArgumentCount) * static_cast<int>(sizeof(Register)), X86::edi);
__ movl_rm(X86::edi, (registerOffset + RegisterFile::CallerFrame) * static_cast<int>(sizeof(Register)), X86::edi);
__ movl_rm(X86::edx, (registerOffset + RegisterFile::ScopeChain) * static_cast<int>(sizeof(Register)), X86::edi);
__ addl_ir(registerOffset * sizeof(Register), X86::edi);
// Call to the callee
m_callStructureStubCompilationInfo[callLinkInfoIndex].hotPathOther = emitNakedCall(reinterpret_cast<void*>(unreachable));
if (opcodeID == op_call_eval)
__ link(wasEval, __ label());
// Put the return value in dst. In the interpreter, op_ret does this.
emitPutVirtualRegister(dst);
#if ENABLE(CODEBLOCK_SAMPLING)
__ movl_i32m(reinterpret_cast<unsigned>(m_codeBlock), m_interpreter->sampler()->codeBlockSlot());
#endif
}
