Provide ia32 intrinsics for bigint add, sub, quotient digit estimation, and

runtime/vm/disassembler_ia32.cc

 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #include "vm/disassembler.h"
 
 #include "vm/globals.h"  // Needed here to get TARGET_ARCH_IA32.
 #if defined(TARGET_ARCH_IA32)
 #include "platform/utils.h"
 #include "vm/allocation.h"
@@ skipping 953 matching lines @@
   uint8_t modrm = *(data+1);
   int mod, regop, rm;
   GetModRm(modrm, &mod, &regop, &rm);
   if (mod == 3 && regop != 0) {
     const char* mnem = NULL;
     switch (regop) {
       case 2: mnem = "not"; break;
       case 3: mnem = "neg"; break;
       case 4: mnem = "mul"; break;
       case 5: mnem = "imul"; break;
+      case 6: mnem = "div"; break;
       case 7: mnem = "idiv"; break;
       default: UNIMPLEMENTED();
     }
     Print(mnem);
     Print(" ");
     PrintCPURegister(rm);
     return 2;
   } else if (mod == 3 && regop == eax) {
     int32_t imm = *reinterpret_cast<int32_t*>(data+2);
     Print("test ");
@@ skipping 892 matching lines @@
                                   pc);
     pc += instruction_length;
   }
 
   return;
 }
 
 }  // namespace dart
 
 #endif  // defined TARGET_ARCH_IA32