Revert "Revert "Add intrinsic for Reference.get()""

This reverts commit a9b870b73a155ce70c867d5b3f9758fab0b45f07.

Change-Id: Ic2a9b47f2b911bef4b764d10bc33cf000e4b4211

1 files changed, 43 insertions, 0 deletions

diff --git a/runtime/mirror/reference.cc b/runtime/mirror/reference.cc
new file mode 100644
index 0000000..533aaca
--- /dev/null
+++ b/runtime/mirror/reference.cc
@@ -0,0 +1,43 @@
+/*
+ * Copyright (C) 2011 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.
+ */
+
+#include "reference.h"
+
+namespace art {
+namespace mirror {
+
+ReferenceClass* Reference::java_lang_ref_Reference_ = nullptr;
+
+void Reference::SetClass(ReferenceClass* java_lang_ref_Reference) {
+  CHECK(java_lang_ref_Reference_ == nullptr);
+  CHECK(java_lang_ref_Reference != nullptr);
+  java_lang_ref_Reference_ = java_lang_ref_Reference;
+}
+
+void Reference::ResetClass() {
+  CHECK(java_lang_ref_Reference_ != nullptr);
+  java_lang_ref_Reference_ = nullptr;
+}
+
+void Reference::VisitRoots(RootCallback* callback, void* arg) {
+  if (java_lang_ref_Reference_ != nullptr) {
+    callback(reinterpret_cast<mirror::Object**>(&java_lang_ref_Reference_),
+             arg, 0, kRootStickyClass);
+  }
+}
+
+}  // namespace mirror
+}  // namespace art