Call builtin code wrapped in functions from the bootstrapper.

src/generator.js

 // Copyright 2013 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.
 
-(function() {
+(function(global, shared, exports) {
 
 "use strict";
 
 %CheckIsBootstrapping();
 
 var GlobalFunction = global.Function;
 
 // ----------------------------------------------------------------------------
 
 // Generator functions and objects are specified by ES6, sections 15.19.3 and
@@ skipping 50 matching lines @@
 }
 
 
 function GeneratorObjectIterator() {
   return this;
 }
 
 
 function GeneratorFunctionConstructor(arg1) {  // length == 1
   var source = $newFunctionString(arguments, 'function*');
-  var global_proxy = %GlobalProxy(global);
+  var global_proxy = %GlobalProxy(GeneratorFunctionConstructor);
   // Compile the string in the constructor and not a helper so that errors
   // appear to come from here.
   var f = %_CallFunction(global_proxy, %CompileString(source, true));
   %FunctionMarkNameShouldPrintAsAnonymous(f);
   return f;
 }
 
 // ----------------------------------------------------------------------------
 
 // Both Runtime_GeneratorNext and Runtime_GeneratorThrow are supported by
@@ skipping 16 matching lines @@
 %AddNamedProperty(GeneratorObjectPrototype,
     symbolToStringTag, "Generator", DONT_ENUM | READ_ONLY);
 %InternalSetPrototype(GeneratorFunctionPrototype, GlobalFunction.prototype);
 %AddNamedProperty(GeneratorFunctionPrototype,
     symbolToStringTag, "GeneratorFunction", DONT_ENUM | READ_ONLY);
 %AddNamedProperty(GeneratorFunctionPrototype, "constructor",
     GeneratorFunction, DONT_ENUM | READ_ONLY);
 %InternalSetPrototype(GeneratorFunction, GlobalFunction);
 %SetCode(GeneratorFunction, GeneratorFunctionConstructor);
 
-})();
+})