MIPS: Implement MADD.S, MSUB, MADDF and MSUBF.

src/mips/disasm-mips.cc

Index: src/mips/disasm-mips.cc
diff --git a/src/mips/disasm-mips.cc b/src/mips/disasm-mips.cc
index bd07874bd67de689859e7c8aa1c6420c92dfecba..afeb9a4c1770504f170fef9e8363f0479ab4f419 100644
--- a/src/mips/disasm-mips.cc
+++ b/src/mips/disasm-mips.cc
@@ -918,6 +918,12 @@ void Decoder::DecodeTypeRegisterSRsType(Instruction* instr) {
       case CVT_D_S:
         Format(instr, "cvt.d.'t 'fd, 'fs");
         break;
+      case MADDF_S:
+        Format(instr, "maddf.s  'fd, 'fs, 'ft");
+        break;
+      case MSUBF_S:
+        Format(instr, "msubf.s  'fd, 'fs, 'ft");
+        break;
       default:
         Format(instr, "unknown.cop1.'t");
         break;
@@ -928,7 +934,17 @@ void Decoder::DecodeTypeRegisterSRsType(Instruction* instr) {
 
 void Decoder::DecodeTypeRegisterDRsType(Instruction* instr) {
   if (!DecodeTypeRegisterRsType(instr)) {
-    Format(instr, "unknown.cop1.'t");
+    switch (instr->FunctionFieldRaw()) {
+      case MADDF_D:
+        Format(instr, "maddf.d  'fd, 'fs, 'ft");
+        break;
+      case MSUBF_D:
+        Format(instr, "msubf.d  'fd, 'fs, 'ft");
+        break;
+      default:
+        Format(instr, "unknown.cop1.'t");
+        break;
+    }
   }
 }
 
@@ -1360,9 +1376,18 @@ void Decoder::DecodeTypeRegister(Instruction* instr) {
       break;
     case COP1X:
       switch (instr->FunctionFieldRaw()) {
+        case MADD_S:
+          Format(instr, "madd.s  'fd, 'fr, 'fs, 'ft");
+          break;
         case MADD_D:
           Format(instr, "madd.d  'fd, 'fr, 'fs, 'ft");
           break;
+        case MSUB_S:
+          Format(instr, "msub.s  'fd, 'fr, 'fs, 'ft");
+          break;
+        case MSUB_D:
+          Format(instr, "msub.d  'fd, 'fr, 'fs, 'ft");
+          break;
         default:
           UNREACHABLE();
       }