MIPS: Accurate function prototypes for native calls from ARM simulator.

src/mips/simulator-mips.h

 // 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 333 matching lines @@
   };
   int16_t exceptions[kNumExceptions];
 
   // Exceptions.
   void SignalExceptions();
 
   // Runtime call support.
   static void* RedirectExternalReference(void* external_function,
                                          ExternalReference::Type type);
 
-  // For use in calls that take double value arguments.
-  void GetFpArgs(double* x, double* y);
-  void GetFpArgs(double* x);
-  void GetFpArgs(double* x, int32_t* y);
+  // Handle arguments and return value for runtime FP functions.
+  void GetFpArgs(double* x, double* y, int32_t* z);
   void SetFpResult(const double& result);
 
   void CallInternal(byte* entry);
 
   // Architecture state.
   // Registers.
   int32_t registers_[kNumSimuRegisters];
   // Coprocessor Registers.
   int32_t FPUregisters_[kNumFPURegisters];
   // FPU control register.
@@ skipping 68 matching lines @@
 
   static inline void UnregisterCTryCatch() {
     Simulator::current(Isolate::Current())->PopAddress();
   }
 };
 
 } }  // namespace v8::internal
 
 #endif  // !defined(USE_SIMULATOR)
 #endif  // V8_MIPS_SIMULATOR_MIPS_H_