Revert "Accurate function prototypes for native calls from ARM simulator."

src/arguments.h

 // Copyright 2012 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 97 matching lines @@
 
   void IterateInstance(ObjectVisitor* v);
   Object** end() { return values_ + ARRAY_SIZE(values_) - 1; }
 
  private:
   Object* values_[4];
 };
 
 
 #define DECLARE_RUNTIME_FUNCTION(Type, Name)    \
-Type Name(int args_length, Object** args_object, Isolate* isolate)
+Type Name(Arguments args, Isolate* isolate)
 
-#define RUNTIME_FUNCTION(Type, Name)                                  \
-static Type __RT_impl_##Name(Arguments args, Isolate* isolate);       \
-Type Name(int args_length, Object** args_object, Isolate* isolate) {  \
-  Arguments args(args_length, args_object);                           \
-  return __RT_impl_##Name(args, isolate);                             \
-}                                                                     \
-static Type __RT_impl_##Name(Arguments args, Isolate* isolate)
 
-#define RUNTIME_ARGUMENTS(isolate, args) \
-  args.length(), args.arguments(), isolate
+#define RUNTIME_FUNCTION(Type, Name)            \
+Type Name(Arguments args, Isolate* isolate)
+
+
+#define RUNTIME_ARGUMENTS(isolate, args) args, isolate
+
 
 } }  // namespace v8::internal
 
 #endif  // V8_ARGUMENTS_H_