MIPS: Add rounding support in simulator and RINT instruction.

src/mips64/assembler-mips64.h

 // Copyright (c) 1994-2006 Sun Microsystems Inc.
 // 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.
 //
@@ skipping 924 matching lines @@
   void cvt_w_s(FPURegister fd, FPURegister fs);
   void cvt_w_d(FPURegister fd, FPURegister fs);
   void trunc_w_s(FPURegister fd, FPURegister fs);
   void trunc_w_d(FPURegister fd, FPURegister fs);
   void round_w_s(FPURegister fd, FPURegister fs);
   void round_w_d(FPURegister fd, FPURegister fs);
   void floor_w_s(FPURegister fd, FPURegister fs);
   void floor_w_d(FPURegister fd, FPURegister fs);
   void ceil_w_s(FPURegister fd, FPURegister fs);
   void ceil_w_d(FPURegister fd, FPURegister fs);
+  void rint_s(FPURegister fd, FPURegister fs);
+  void rint_d(FPURegister fd, FPURegister fs);
+  void rint(SecondaryField fmt, FPURegister fd, FPURegister fs);
+
 
   void cvt_l_s(FPURegister fd, FPURegister fs);
   void cvt_l_d(FPURegister fd, FPURegister fs);
   void trunc_l_s(FPURegister fd, FPURegister fs);
   void trunc_l_d(FPURegister fd, FPURegister fs);
   void round_l_s(FPURegister fd, FPURegister fs);
   void round_l_d(FPURegister fd, FPURegister fs);
   void floor_l_s(FPURegister fd, FPURegister fs);
   void floor_l_d(FPURegister fd, FPURegister fs);
   void ceil_l_s(FPURegister fd, FPURegister fs);
@@ skipping 482 matching lines @@
 class EnsureSpace BASE_EMBEDDED {
  public:
   explicit EnsureSpace(Assembler* assembler) {
     assembler->CheckBuffer();
   }
 };
 
 } }  // namespace v8::internal
 
 #endif  // V8_ARM_ASSEMBLER_MIPS_H_