MIPS[64]: Implement fill.df, copy_u.df, copy_s.df instructions in simulator

src/mips64/constants-mips64.h

Index: src/mips64/constants-mips64.h
diff --git a/src/mips64/constants-mips64.h b/src/mips64/constants-mips64.h
index 7fc6ca1c958ac8efdf8a2be2924f7ba54bd8c6b9..0ad3dae9f4fc1d96c7504ce3b98ae855c5e4543c 100644
--- a/src/mips64/constants-mips64.h
+++ b/src/mips64/constants-mips64.h
@@ -333,6 +333,16 @@ const int kImm5Mask = ((1 << 5) - 1);
 const int kImm8Mask = ((1 << 8) - 1);
 const int kImm10Mask = ((1 << 10) - 1);
 const int kMsaI5I10Mask = ((7U << 23) | ((1 << 6) - 1));
+const int kMsaI8Mask = ((3U << 24) | ((1 << 6) - 1));
+const int kMsaI5Mask = ((7U << 23) | ((1 << 6) - 1));
+const int kMsaMI10Mask = (15U << 2);
+const int kMsaBITMask = ((7U << 23) | ((1 << 6) - 1));
+const int kMsaELMMask = (15U << 22);
+const int kMsa3RMask = ((7U << 23) | ((1 << 6) - 1));
+const int kMsa3RFMask = ((15U << 22) | ((1 << 6) - 1));
+const int kMsaVECMask = (23U << 21);
+const int kMsa2RMask = (7U << 18);
+const int kMsa2RFMask = (15U << 17);
 const int  kRsFieldMask  = ((1 << kRsBits) - 1) << kRsShift;
 const int  kRtFieldMask  = ((1 << kRtBits) - 1) << kRtShift;
 const int  kRdFieldMask  = ((1 << kRdBits) - 1) << kRdShift;