In Invoke get JSEntryStub and JSConstructEntryStub directly through roots.

src/execution.cc

 // Copyright 2011 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 70 matching lines @@
 
   typedef Object* (*JSEntryFunction)(
     byte* entry,
     Object* function,
     Object* receiver,
     int argc,
     Object*** args);
 
   Handle<Code> code;
   if (construct) {
-    JSConstructEntryStub stub;
-    code = stub.GetCode();
+    code = isolate->factory()->js_construct_entry_code();
   } else {
-    JSEntryStub stub;
-    code = stub.GetCode();
+    code = isolate->factory()->js_entry_code();
   }
 
   // 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()) {
     Handle<GlobalObject> global = Handle<GlobalObject>::cast(receiver);
     receiver = Handle<JSObject>(global->global_receiver());
   }
 
@@ skipping 788 matching lines @@
     return isolate->TerminateExecution();
   }
   if (stack_guard->IsInterrupted()) {
     stack_guard->Continue(INTERRUPT);
     return isolate->StackOverflow();
   }
   return isolate->heap()->undefined_value();
 }
 
 } }  // namespace v8::internal