A64: add missing files.

src/a64/debugger-a64.h

-// Copyright 2010 the V8 project authors. All rights reserved.
+// Copyright 2013 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
 //       with the distribution.
 //     * Neither the name of Google Inc. nor the names of its
 //       contributors may be used to endorse or promote products derived
 //       from this software without specific prior written permission.
 //
 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
-#ifndef V8_EXTENSIONS_GC_EXTENSION_H_
-#define V8_EXTENSIONS_GC_EXTENSION_H_
+#ifndef V8_A64_DEBUGGER_A64_H_
+#define V8_A64_DEBUGGER_A64_H_
 
-#include "v8.h"
+#if defined(USE_SIMULATOR)
+
+#include "globals.h"
+#include "utils.h"
+#include "a64/constants-a64.h"
+#include "a64/simulator-a64.h"
 
 namespace v8 {
 namespace internal {
 
-class GCExtension : public v8::Extension {
+
+class Debugger : public Simulator {
  public:
-  explicit GCExtension(const char* source) : v8::Extension("v8/gc", source) {}
-  virtual v8::Handle<v8::FunctionTemplate> GetNativeFunction(
-      v8::Handle<v8::String> name);
-  static void GC(const v8::FunctionCallbackInfo<v8::Value>& args);
-  static void Register();
+  Debugger(Decoder* decoder, FILE* stream = stdout)
+    : Simulator(decoder, NULL, stream) {}
+
+  // Functions overloading.
+  void VisitException(Instruction* instr);
 };
 
+
 } }  // namespace v8::internal
 
-#endif  // V8_EXTENSIONS_GC_EXTENSION_H_
+#endif  // USE_SIMULATOR
+
+#endif  // V8_A64_DEBUGGER_A64_H_