Adds simulator debugger and Stop to arm64.

runtime/vm/constants_arm64.h

 // Copyright (c) 2014, 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_CONSTANTS_ARM64_H_
 #define VM_CONSTANTS_ARM64_H_
 
 #include "platform/assert.h"
 
 namespace dart {
@@ skipping 519 matching lines @@
   // Hint Fields.
   kHintCRmShift = 8,
   kHintCRmBits = 4,
   kHintOp2Shift = 5,
   kHintOp2Bits = 3,
 };
 
 
 const uint32_t kImmExceptionIsRedirectedCall = 0xca11;
 const uint32_t kImmExceptionIsUnreachable = 0xdebf;
+const uint32_t kImmExceptionIsDebug = 0xdeb0;
 const uint32_t kImmExceptionIsPrintf = 0xdeb1;
-const uint32_t kImmExceptionIsDebug = 0xdeb0;
 
 // Helper functions for decoding logical immediates.
 static inline uint64_t RotateRight(
     uint64_t value, uint8_t rotate, uint8_t width) {
   ASSERT(width <= 64);
   rotate &= 63;
   return ((value & ((1UL << rotate) - 1UL)) << (width - rotate)) |
          (value >> rotate);
 }
 
@@ skipping 219 matching lines @@
   static Instr* At(uword pc) { return reinterpret_cast<Instr*>(pc); }
 
  private:
   DISALLOW_ALLOCATION();
   DISALLOW_IMPLICIT_CONSTRUCTORS(Instr);
 };
 
 }  // namespace dart
 
 #endif  // VM_CONSTANTS_ARM64_H_