--- old/src/java.base/share/classes/jdk/internal/misc/Unsafe.java	2016-02-02 10:45:31.025623223 -0800
+++ new/src/java.base/share/classes/jdk/internal/misc/Unsafe.java	2016-02-02 10:45:30.817619676 -0800
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2000, 2015, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2000, 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
@@ -459,6 +459,34 @@
     }
 
     /**
+     * Copies all elements from one block of memory to another block, byte swapping the
+     * elements on the fly.
+     *
+     * <p>This method determines each block's base address by means of two parameters,
+     * and so it provides (in effect) a <em>double-register</em> addressing mode,
+     * as discussed in {@link #getInt(Object,long)}.  When the object reference is null,
+     * the offset supplies an absolute base address.
+     *
+     * @since 9
+     */
+    public native void copySwapMemory(Object srcBase, long srcOffset,
+                                      Object destBase, long destOffset,
+                                      long bytes, long elemSize);
+
+   /**
+     * Copies all elements from one block of memory to another block, byte swapping the
+     * elements on the fly.
+     *
+     * This provides a <em>single-register</em> addressing mode, as
+     * discussed in {@link #getInt(Object,long)}.
+     *
+     * Equivalent to {@code copySwapMemory(null, srcAddress, null, destAddress, bytes, elemSize)}.
+     */
+    public void copySwapMemory(long srcAddress, long destAddress, long bytes, long elemSize) {
+        copySwapMemory(null, srcAddress, null, destAddress, bytes, elemSize);
+    }
+
+    /**
      * Disposes of a block of native memory, as obtained from {@link
      * #allocateMemory} or {@link #reallocateMemory}.  The address passed to
      * this method may be null, in which case no action is taken.