ART: Move simulator to art/

Move the simulator library out of the runtime directory. Let's not
pollute the runtime library.

Test: m
Change-Id: I351a0061ae628c3af0462b72d4de727db296ec23
diff --git a/simulator/code_simulator_arm64.h b/simulator/code_simulator_arm64.h
new file mode 100644
index 0000000..0542593
--- /dev/null
+++ b/simulator/code_simulator_arm64.h
@@ -0,0 +1,59 @@
+/*
+ * Copyright (C) 2015 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef ART_SIMULATOR_CODE_SIMULATOR_ARM64_H_
+#define ART_SIMULATOR_CODE_SIMULATOR_ARM64_H_
+
+#include "memory"
+
+// TODO(VIXL): Make VIXL compile with -Wshadow.
+#pragma GCC diagnostic push
+#pragma GCC diagnostic ignored "-Wshadow"
+#include "aarch64/simulator-aarch64.h"
+#pragma GCC diagnostic pop
+
+#include "code_simulator.h"
+
+namespace art {
+namespace arm64 {
+
+class CodeSimulatorArm64 : public CodeSimulator {
+ public:
+  static CodeSimulatorArm64* CreateCodeSimulatorArm64();
+  virtual ~CodeSimulatorArm64();
+
+  void RunFrom(intptr_t code_buffer) OVERRIDE;
+
+  bool GetCReturnBool() const OVERRIDE;
+  int32_t GetCReturnInt32() const OVERRIDE;
+  int64_t GetCReturnInt64() const OVERRIDE;
+
+ private:
+  CodeSimulatorArm64();
+
+  vixl::aarch64::Decoder* decoder_;
+  vixl::aarch64::Simulator* simulator_;
+
+  // TODO: Enable CodeSimulatorArm64 for more host ISAs once Simulator supports them.
+  static constexpr bool kCanSimulate = (kRuntimeISA == kX86_64);
+
+  DISALLOW_COPY_AND_ASSIGN(CodeSimulatorArm64);
+};
+
+}  // namespace arm64
+}  // namespace art
+
+#endif  // ART_SIMULATOR_CODE_SIMULATOR_ARM64_H_