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
 
 #include "platform/assert.h"
 #include "platform/utils.h"
 #include "vm/constants_arm.h"
+#include "vm/simulator.h"
 
 namespace dart {
 
 class Label : public ValueObject {
  public:
   Label() : position_(0) { }
 
   ~Label() {
     // Assert if label is being destroyed with unresolved branches pending.
     ASSERT(!IsLinked());
@@ skipping 29 matching lines @@
     ASSERT(IsLinked());
   }
 
   friend class Assembler;
   DISALLOW_COPY_AND_ASSIGN(Label);
 };
 
 
 class CPUFeatures : public AllStatic {
  public:
-  static void InitOnce() { }
+  static void InitOnce();
   static bool double_truncate_round_supported() {
     UNIMPLEMENTED();
     return false;
   }
+  static bool integer_division_supported();
+#if defined(USING_SIMULATOR)
+  static void set_integer_division_supported(bool supported);
+#endif
+ private:
+  static bool integer_division_supported_;
+#if defined(DEBUG)
+  static bool initialized_;
+#endif
 };
 
 
 // Encodes Addressing Mode 1 - Data-processing operands.
 class ShifterOperand : public ValueObject {
  public:
   // Data-processing operands - Uninitialized.
   ShifterOperand() : type_(-1), encoding_(-1) { }
 
   // Data-processing operands - Copy constructor.
@@ skipping 402 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);
 
+  // Move to ARM core register from Coprocessor.
+  void mrc(Register rd, int32_t coproc, int32_t opc1,
+           int32_t crn, int32_t crm, int32_t opc2, Condition cond = AL);
+
   // 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_