Use a breakpoint instruction for a stop message on arm instead of

runtime/vm/disassembler_mips.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_MIPS.
 #if defined(TARGET_ARCH_MIPS)
 #include "platform/assert.h"
 
@@ skipping 286 matching lines @@
     case ADDU: {
       Format(instr, "addu 'rd, 'rs, 'rt");
       break;
     }
     case AND: {
       Format(instr, "and 'rd, 'rs, 'rt");
       break;
     }
     case BREAK: {
       Format(instr, "break 'code");
+      if (instr->BreakCodeField() == Instr::kStopMessageCode) {
+        const char* message = *reinterpret_cast<const char**>(
+            reinterpret_cast<intptr_t>(instr) - Instr::kInstrSize);
+        buffer_pos_ += OS::SNPrint(current_position_in_buffer(),
+                                   remaining_size_in_buffer(),
+                                   " ; \"%s\"",
+                                   message);
+      }
       break;
     }
     case DIV: {
       Format(instr, "div 'rs, 'rt");
       break;
     }
     case DIVU: {
       Format(instr, "divu 'rs, 'rt");
       break;
     }
@@ skipping 441 matching lines @@
   decoder.InstructionDecode(instr);
   OS::SNPrint(hex_buffer, hex_size, "%08x", instr->InstructionBits());
   if (out_instr_len) {
     *out_instr_len = Instr::kInstrSize;
   }
 }
 
 }  // namespace dart
 
 #endif  // defined TARGET_ARCH_MIPS