Var AsmJsChangeHeapBuffer(RecyclableObject * function, CallInfo callInfo, ...)
{
PROBE_STACK(function->GetScriptContext(), Js::Constants::MinStackDefault);
ARGUMENTS(args, callInfo);
ScriptContext* scriptContext = function->GetScriptContext();
Assert(!(callInfo.Flags & CallFlags_New));
if (args.Info.Count < 1 || !ArrayBuffer::Is(args[1]))
{
JavascriptError::ThrowTypeError(scriptContext, JSERR_NeedArrayBufferObject);
}
ArrayBuffer* newArrayBuffer = ArrayBuffer::FromVar(args[1]);
if (newArrayBuffer->IsDetached() || newArrayBuffer->GetByteLength() & 0xffffff || newArrayBuffer->GetByteLength() <= 0xffffff || newArrayBuffer->GetByteLength() > 0x80000000)
{
return JavascriptBoolean::ToVar(FALSE, scriptContext);
}
FrameDisplay* frame = ((ScriptFunction*)function)->GetEnvironment();
Var* moduleArrayBuffer = (Var*)frame->GetItem(0) + AsmJsModuleMemory::MemoryTableBeginOffset;
*moduleArrayBuffer = newArrayBuffer;
return JavascriptBoolean::ToVar(TRUE, scriptContext);
}
Var CrossSite::MarshalFrameDisplay(ScriptContext* scriptContext, FrameDisplay *display)
{
TTD_XSITE_LOG(scriptContext, "MarshalFrameDisplay", nullptr);
uint16 length = display->GetLength();
FrameDisplay *newDisplay =
RecyclerNewPlus(scriptContext->GetRecycler(), length * sizeof(Var), FrameDisplay, length);
for (uint16 i = 0; i < length; i++)
{
Var value = display->GetItem(i);
if (WithScopeObject::Is(value))
{
// Here we are marshalling the wrappedObject and then ReWrapping th object in the new context.
RecyclableObject* wrappedObject = WithScopeObject::FromVar(value)->GetWrappedObject();
ScriptContext* wrappedObjectScriptContext = wrappedObject->GetScriptContext();
value = JavascriptOperators::ToWithObject(CrossSite::MarshalVar(scriptContext,
wrappedObject, wrappedObjectScriptContext), scriptContext);
}
else
{
value = CrossSite::MarshalVar(scriptContext, value);
}
newDisplay->SetItem(i, value);
}
return (Var)newDisplay;
}
Var DiagStackFrame::GetScopeObjectFromFrameDisplay(uint index)
{
FrameDisplay * display = GetFrameDisplay();
return (display != NULL && display->GetLength() > index) ? display->GetItem(index) : NULL;
}
