(mips) adding simulator support for AUI/DAUI/DAHI/DATI instructions.

src/mips64/disasm-mips64.cc

Index: src/mips64/disasm-mips64.cc
diff --git a/src/mips64/disasm-mips64.cc b/src/mips64/disasm-mips64.cc
index a8fd48e6a204767eddfd2fc344d12ed1861d79ba..19c32983e44d0e8cd69ca4b1a5eb816eff5b295c 100644
--- a/src/mips64/disasm-mips64.cc
+++ b/src/mips64/disasm-mips64.cc
@@ -1535,10 +1535,10 @@ void Decoder::DecodeTypeImmediateREGIMM(Instruction* instr) {
       Format(instr, "bgezall 'rs, 'imm16u -> 'imm16p4s2");
       break;
     case DAHI:
-      Format(instr, "dahi    'rs, 'imm16u");
+      Format(instr, "dahi    'rs, 'imm16x");
       break;
     case DATI:
-      Format(instr, "dati    'rs, 'imm16u");
+      Format(instr, "dati    'rs, 'imm16x");
       break;
     default:
       UNREACHABLE();
@@ -1691,14 +1691,14 @@ void Decoder::DecodeTypeImmediate(Instruction* instr) {
         Format(instr, "lui     'rt, 'imm16x");
       } else {
         if (instr->RsValue() != 0) {
-          Format(instr, "aui     'rt, 'imm16x");
+          Format(instr, "aui     'rt, 'rs, 'imm16x");
         } else {
           Format(instr, "lui     'rt, 'imm16x");
         }
       }
       break;
     case DAUI:
-      Format(instr, "daui    'rt, 'imm16x");
+      Format(instr, "daui    'rt, 'rs, 'imm16x");
       break;
     // ------------- Memory instructions.
     case LB: