Initial SIMDBC interpreter.

runtime/vm/debugger.h

 // Copyright (c) 2012, 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_DEBUGGER_H_
 #define VM_DEBUGGER_H_
 
 #include "include/dart_tools_api.h"
 
 #include "vm/object.h"
@@ skipping 209 matching lines @@
   RawCode* code_;
   TokenPosition token_pos_;
   uword pc_;
   intptr_t line_number_;
   bool is_enabled_;
 
   BreakpointLocation* bpt_location_;
   CodeBreakpoint* next_;
 
   RawPcDescriptors::Kind breakpoint_kind_;
+#if !defined(TARGET_ARCH_DBC)
   RawCode* saved_value_;
+#else
+  // When running on the DBC interpreter we patch bytecode in place with
+  // DebugBreak. This is an instruction that was replaced. DebugBreak
+  // will execute it after the breakpoint.
+  Instr saved_value_;
+#endif
 
   friend class Debugger;
   DISALLOW_COPY_AND_ASSIGN(CodeBreakpoint);
 };
 
 
 // ActivationFrame represents one dart function activation frame
 // on the call stack.
 class ActivationFrame : public ZoneAllocated {
  public:
@@ skipping 481 matching lines @@
 
   friend class Isolate;
   friend class BreakpointLocation;
   DISALLOW_COPY_AND_ASSIGN(Debugger);
 };
 
 
 }  // namespace dart
 
 #endif  // VM_DEBUGGER_H_