Adds mrc instruction to arm simulator, assembler, disassembler.

runtime/vm/assembler_arm.h

 // 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.
 
 #ifndef VM_ASSEMBLER_ARM_H_
 #define VM_ASSEMBLER_ARM_H_
 
 #ifndef VM_ASSEMBLER_H_
 #error Do not include assembler_arm.h directly; use assembler.h instead.
 #endif
@@ skipping 470 matching lines @@
   void vcmpsz(SRegister sd, Condition cond = AL);
   void vcmpdz(DRegister dd, Condition cond = AL);
   void vmstat(Condition cond = AL);  // VMRS APSR_nzcv, FPSCR
 
   // Branch instructions.
   void b(Label* label, Condition cond = AL);
   void bl(Label* label, Condition cond = AL);
   void bx(Register rm, Condition cond = AL);
   void blx(Register rm, Condition cond = AL);
 
+  // MRC

[regis, 2013/03/04 21:54:52]

Better to spell out MRC: Move to ARM core register from Coprocessor.

[srdjan, 2013/03/04 22:02:17]

Also terminate all comments with a period.

+  void mrc(Register rd, int32_t coproc, int32_t opc1,
+           int32_t CRn, int32_t CRm, int32_t opc2, Condition cond = AL);

[regis, 2013/03/04 21:54:52]

No upper case for locals.

+
   // Macros.
   // Branch to an entry address. Call sequence is never patched.
   void Branch(const ExternalLabel* label, Condition cond = AL);
 
   // Branch and link to an entry address. Call sequence is never patched.
   void BranchLink(const ExternalLabel* label);
 
   // Branch and link to an entry address. Call sequence can be patched.
   void BranchLinkPatchable(const ExternalLabel* label);
 
@@ skipping 201 matching lines @@
     return *reg1 - *reg2;
   }
 
   DISALLOW_ALLOCATION();
   DISALLOW_COPY_AND_ASSIGN(Assembler);
 };
 
 }  // namespace dart
 
 #endif  // VM_ASSEMBLER_ARM_H_