--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/jvmci/jdk.vm.ci.code/src/jdk/vm/ci/code/site/DataSectionReference.java	Fri Jan 15 16:50:19 2016 +0100
@@ -0,0 +1,73 @@
+/*
+ * Copyright (c) 2009, 2016, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+package jdk.vm.ci.code.site;
+
+public final class DataSectionReference extends Reference {
+
+    private boolean initialized;
+    private int offset;
+
+    public DataSectionReference() {
+        // will be set after the data section layout is fixed
+        offset = 0xDEADDEAD;
+    }
+
+    public int getOffset() {
+        assert initialized;
+
+        return offset;
+    }
+
+    public void setOffset(int offset) {
+        assert !initialized;
+        initialized = true;
+
+        this.offset = offset;
+    }
+
+    @Override
+    public int hashCode() {
+        return offset;
+    }
+
+    @Override
+    public boolean equals(Object obj) {
+        if (this == obj) {
+            return true;
+        }
+        if (obj instanceof DataSectionReference) {
+            DataSectionReference that = (DataSectionReference) obj;
+            return this.offset == that.offset;
+        }
+        return false;
+    }
+
+    @Override
+    public String toString() {
+        if (initialized) {
+            return String.format("DataSection[0x%x]", offset);
+        } else {
+            return "DataSection[?]";
+        }
+    }
+}