[builtins] Add support for NewTarget to Execution::New.

src/execution.cc

 // Copyright 2014 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "src/execution.h"
 
 #include "src/bootstrapper.h"
 #include "src/codegen.h"
 #include "src/deoptimizer.h"
 #include "src/isolate-inl.h"
@@ skipping 40 matching lines @@
     PrintF("]\n");
   }
 }
 
 
 namespace {
 
 MUST_USE_RESULT MaybeHandle<Object> Invoke(bool is_construct,
                                            Handle<JSFunction> function,
                                            Handle<Object> receiver, int argc,
-                                           Handle<Object> args[]) {
+                                           Handle<Object> args[],
+                                           Handle<Object> new_target) {
   Isolate* const isolate = function->GetIsolate();
 
   // Convert calls on global objects to be calls on the global
   // receiver instead to avoid having a 'this' pointer which refers
   // directly to a global object.
   if (receiver->IsGlobalObject()) {
     receiver =
         handle(Handle<GlobalObject>::cast(receiver)->global_proxy(), isolate);
   }
 
@@ skipping 29 matching lines @@
   CHECK(AllowJavascriptExecution::IsAllowed(isolate));
   if (!ThrowOnJavascriptExecution::IsAllowed(isolate)) {
     isolate->ThrowIllegalOperation();
     isolate->ReportPendingMessages();
     return MaybeHandle<Object>();
   }
 
   // Placeholder for return value.
   Object* value = NULL;
 
-  typedef Object* (*JSEntryFunction)(byte* entry,
-                                     Object* function,
-                                     Object* receiver,
-                                     int argc,
+  typedef Object* (*JSEntryFunction)(Object* new_target, Object* function,
+                                     Object* receiver, int argc,
                                      Object*** args);
 
   Handle<Code> code = is_construct
       ? isolate->factory()->js_construct_entry_code()
       : isolate->factory()->js_entry_code();
 
   // Make sure that the global object of the context we're about to
   // make the current one is indeed a global object.
   DCHECK(function->context()->global_object()->IsGlobalObject());
 
   {
     // Save and restore context around invocation and block the
     // allocation of handles without explicit handle scopes.
     SaveContext save(isolate);
     SealHandleScope shs(isolate);
     JSEntryFunction stub_entry = FUNCTION_CAST<JSEntryFunction>(code->entry());
 
     // Call the function through the right JS entry stub.
-    byte* ignored = nullptr;  // TODO(bmeurer): Remove this altogether.
+    Object* orig_func = *new_target;
     JSFunction* func = *function;
     Object* recv = *receiver;
     Object*** argv = reinterpret_cast<Object***>(args);
     if (FLAG_profile_deserialization) PrintDeserializedCodeInfo(function);
-    value = CALL_GENERATED_CODE(stub_entry, ignored, func, recv, argc, argv);
+    value = CALL_GENERATED_CODE(stub_entry, orig_func, func, recv, argc, argv);
   }
 
 #ifdef VERIFY_HEAP
   if (FLAG_verify_heap) {
     value->ObjectVerify();
   }
 #endif
 
   // Update the pending exception flag and return the value.
   bool has_exception = value->IsException();
@@ skipping 16 matching lines @@
 
 
 MaybeHandle<Object> Execution::Call(Isolate* isolate, Handle<Object> callable,
                                     Handle<Object> receiver, int argc,
                                     Handle<Object> argv[]) {
   if (!callable->IsJSFunction()) {
     ASSIGN_RETURN_ON_EXCEPTION(isolate, callable,
                                GetFunctionDelegate(isolate, callable), Object);
   }
   Handle<JSFunction> func = Handle<JSFunction>::cast(callable);
-
-  return Invoke(false, func, receiver, argc, argv);
+  return Invoke(false, func, receiver, argc, argv,
+                isolate->factory()->undefined_value());
 }
 
 
-MaybeHandle<Object> Execution::New(Handle<JSFunction> func,
-                                   int argc,
+MaybeHandle<Object> Execution::New(Handle<JSFunction> constructor, int argc,
                                    Handle<Object> argv[]) {
-  return Invoke(true, func, handle(func->global_proxy()), argc, argv);
+  return New(constructor, constructor, argc, argv);
 }
 
 
+MaybeHandle<Object> Execution::New(Handle<JSFunction> constructor,
+                                   Handle<JSFunction> new_target, int argc,
+                                   Handle<Object> argv[]) {
+  return Invoke(true, constructor, handle(constructor->global_proxy()), argc,
+                argv, new_target);
+}
+
+
 MaybeHandle<Object> Execution::TryCall(Handle<JSFunction> func,
                                        Handle<Object> receiver, int argc,
                                        Handle<Object> args[],
                                        MaybeHandle<Object>* exception_out) {
   bool is_termination = false;
   Isolate* isolate = func->GetIsolate();
   MaybeHandle<Object> maybe_result;
   if (exception_out != NULL) *exception_out = MaybeHandle<Object>();
   // Enter a try-block while executing the JavaScript code. To avoid
   // duplicate error printing it must be non-verbose.  Also, to avoid
@@ skipping 443 matching lines @@
 
   isolate_->counters()->stack_interrupts()->Increment();
   isolate_->counters()->runtime_profiler_ticks()->Increment();
   isolate_->runtime_profiler()->OptimizeNow();
 
   return isolate_->heap()->undefined_value();
 }
 
 }  // namespace internal
 }  // namespace v8