MIPS: Added support for Loongson architectures.

src/mips/disasm-mips.cc

-// Copyright 2011 the V8 project authors. All rights reserved.
+// Copyright 2012 the V8 project authors. 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.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
 //       with the distribution.
@@ skipping 496 matching lines @@
             case NEG_D:
               Format(instr, "neg.d   'fd, 'fs");
               break;
             case SQRT_D:
               Format(instr, "sqrt.d  'fd, 'fs");
               break;
             case CVT_W_D:
               Format(instr, "cvt.w.d 'fd, 'fs");
               break;
             case CVT_L_D: {
-              if (mips32r2) {
+              if (kArchVariant == kMips32r2) {
                 Format(instr, "cvt.l.d 'fd, 'fs");
               } else {
                 Unknown(instr);
               }
               break;
             }
             case TRUNC_W_D:
               Format(instr, "trunc.w.d 'fd, 'fs");
               break;
             case TRUNC_L_D: {
-              if (mips32r2) {
+              if (kArchVariant == kMips32r2) {
                 Format(instr, "trunc.l.d 'fd, 'fs");
               } else {
                 Unknown(instr);
               }
               break;
             }
             case ROUND_W_D:
               Format(instr, "round.w.d 'fd, 'fs");
               break;
             case FLOOR_W_D:
@@ skipping 45 matching lines @@
             case CVT_D_W:   // Convert word to double.
               Format(instr, "cvt.d.w 'fd, 'fs");
               break;
             default:
               UNREACHABLE();
           }
           break;
         case L:
           switch (instr->FunctionFieldRaw()) {
             case CVT_D_L: {
-              if (mips32r2) {
+              if (kArchVariant == kMips32r2) {
                 Format(instr, "cvt.d.l 'fd, 'fs");
               } else {
                 Unknown(instr);
               }
               break;
             }
             case CVT_S_L: {
-              if (mips32r2) {
+              if (kArchVariant == kMips32r2) {
                 Format(instr, "cvt.s.l 'fd, 'fs");
               } else {
                 Unknown(instr);
               }
               break;
             }
             default:
               UNREACHABLE();
           }
           break;
@@ skipping 15 matching lines @@
         case SLL:
           if ( 0x0 == static_cast<int>(instr->InstructionBits()))
             Format(instr, "nop");
           else
             Format(instr, "sll     'rd, 'rt, 'sa");
           break;
         case SRL:
           if (instr->RsValue() == 0) {
             Format(instr, "srl     'rd, 'rt, 'sa");
           } else {
-            if (mips32r2) {
+            if (kArchVariant == kMips32r2) {
               Format(instr, "rotr    'rd, 'rt, 'sa");
             } else {
               Unknown(instr);
             }
           }
           break;
         case SRA:
           Format(instr, "sra     'rd, 'rt, 'sa");
           break;
         case SLLV:
           Format(instr, "sllv    'rd, 'rt, 'rs");
           break;
         case SRLV:
           if (instr->SaValue() == 0) {
             Format(instr, "srlv    'rd, 'rt, 'rs");
           } else {
-            if (mips32r2) {
+            if (kArchVariant == kMips32r2) {
               Format(instr, "rotrv   'rd, 'rt, 'rs");
             } else {
               Unknown(instr);
             }
           }
           break;
         case SRAV:
           Format(instr, "srav    'rd, 'rt, 'rs");
           break;
         case MFHI:
@@ skipping 96 matching lines @@
         case CLZ:
           Format(instr, "clz     'rd, 'rs");
           break;
         default:
           UNREACHABLE();
       }
       break;
     case SPECIAL3:
       switch (instr->FunctionFieldRaw()) {
         case INS: {
-          if (mips32r2) {
+          if (kArchVariant == kMips32r2) {
             Format(instr, "ins     'rt, 'rs, 'sa, 'ss2");
           } else {
             Unknown(instr);
           }
           break;
         }
         case EXT: {
-          if (mips32r2) {
+          if (kArchVariant == kMips32r2) {
             Format(instr, "ext     'rt, 'rs, 'sa, 'ss1");
           } else {
             Unknown(instr);
           }
           break;
         }
         default:
           UNREACHABLE();
       }
       break;
@@ skipping 250 matching lines @@
             prev_pc, *reinterpret_cast<int32_t*>(prev_pc), buffer.start());
   }
 }
 
 
 #undef UNSUPPORTED
 
 }  // namespace disasm
 
 #endif  // V8_TARGET_ARCH_MIPS