--- /dev/null	2019-12-04 18:44:18.020007537 +0000
+++ new/src/java.base/share/classes/java/lang/invoke/VarHandleMemoryAddressBase.java	2019-12-09 18:15:21.035839897 +0000
@@ -0,0 +1,63 @@
+/*
+ * Copyright (c) 2019, 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.  Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle in the LICENSE file that accompanied this code.
+ *
+ * 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 java.lang.invoke;
+
+/**
+ * Base class for memory access var handle implementations.
+ */
+abstract class VarHandleMemoryAddressBase extends VarHandle {
+
+    /** endianness **/
+    final boolean be;
+
+    /** access size (in bytes, computed from var handle carrier type) **/
+    final long length;
+
+    /** access offset (in bytes); must be compatible with {@code alignmentMask} **/
+    final long offset;
+
+    /** alignment constraint (in bytes, expressed as a bit mask) **/
+    final long alignmentMask;
+
+    VarHandleMemoryAddressBase(VarForm form, boolean be, long length, long offset, long alignmentMask) {
+        super(form);
+        this.be = be;
+        this.length = length;
+        this.offset = offset;
+        this.alignmentMask = alignmentMask;
+    }
+
+    static IllegalStateException newIllegalStateExceptionForMisalignedAccess(long address) {
+        return new IllegalStateException("Misaligned access at address: " + address);
+    }
+
+    /**
+     * Strides used for multi-dimensional access; each stride must be compatible with {@code alignmentMask}.
+     */
+    abstract long[] strides();
+
+    abstract Class<?> carrier();
+}