Adds mrc instruction to arm simulator, assembler, disassembler.

runtime/vm/disassembler_arm.cc

 // Copyright (c) 2013, 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_ARM.
 #if defined(TARGET_ARCH_ARM)
 #include "platform/assert.h"
 
@@ skipping 1173 matching lines @@
         } else {
           Format(instr, "vmovr'cond 'rd, 'sn");
         }
       } else if ((instr->Bits(20, 4) == 0xf) && (instr->Bit(8) == 0) &&
                  (instr->Bits(12, 4) == 0xf)) {
         Format(instr, "vmstat'cond");
       } else {
         Unknown(instr);
       }
     }
+  } else if (instr->IsMrcIdIsar0()) {
+    Format(instr, "mrc'cond p15, 0, 'rd, c0, c2, 0");
   } else {
     Unknown(instr);
   }
 }
 
 
 void ARMDecoder::InstructionDecode(uword pc) {
 Instr* instr = Instr::At(pc);
   if (instr->ConditionField() == kSpecialCondition) {
     if (instr->InstructionBits() == static_cast<int32_t>(0xf57ff01f)) {
@@ skipping 81 matching lines @@
                                   human_buffer,
                                   sizeof(human_buffer),
                                   pc);
     pc += instruction_length;
   }
 }
 
 }  // namespace dart
 
 #endif  // defined TARGET_ARCH_ARM