MIPS: Correct handling of Nan values on MIPS R6

src/mips64/simulator-mips64.h

Index: src/mips64/simulator-mips64.h
diff --git a/src/mips64/simulator-mips64.h b/src/mips64/simulator-mips64.h
index b514e45049a4c0ebf176a6acb6ef9aa310427b68..4c67eff6636cc4d7fa7d087166fb7d951871f7d5 100644
--- a/src/mips64/simulator-mips64.h
+++ b/src/mips64/simulator-mips64.h
@@ -202,6 +202,12 @@ class Simulator {
   void set_fpu_register_hi_word(int fpureg, int32_t value);
   void set_fpu_register_float(int fpureg, float value);
   void set_fpu_register_double(int fpureg, double value);
+  void set_fpu_register_invalid_result64(float original, float rounded);
+  void set_fpu_register_invalid_result(float original, float rounded);
+  void set_fpu_register_word_invalid_result(float original, float rounded);
+  void set_fpu_register_invalid_result64(double original, double rounded);
+  void set_fpu_register_invalid_result(double original, double rounded);
+  void set_fpu_register_word_invalid_result(double original, double rounded);
   int64_t get_fpu_register(int fpureg) const;
   int32_t get_fpu_register_word(int fpureg) const;
   int32_t get_fpu_register_signed_word(int fpureg) const;