MIPS simple function calls

src/mips/frames-mips.cc

 // Copyright 2010 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 73 matching lines @@
 }
 
 
 Address ArgumentsAdaptorFrame::GetCallerStackPointer() const {
   UNIMPLEMENTED_MIPS();
   return static_cast<Address>(NULL);  // UNIMPLEMENTED RETURN
 }
 
 
 Address InternalFrame::GetCallerStackPointer() const {
-  UNIMPLEMENTED_MIPS();
-  return static_cast<Address>(NULL);  // UNIMPLEMENTED RETURN
+  return fp() + StandardFrameConstants::kCallerSPOffset;
 }
 
 
 } }  // namespace v8::internal