--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/graal/com.oracle.truffle.interop/src/com/oracle/truffle/interop/ForeignAccessArguments.java	Mon Apr 20 10:58:35 2015 +0200
@@ -0,0 +1,78 @@
+/*
+ * Copyright (c) 2014, 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 com.oracle.truffle.interop;
+
+import com.oracle.truffle.api.*;
+
+public final class ForeignAccessArguments {
+    public static final Object[] EMPTY_ARGUMENTS_ARRAY = new Object[0];
+    public static final int RECEIVER_INDEX = 0;
+    public static final int RUNTIME_ARGUMENT_COUNT = 1;
+
+    public static Object[] create(Object receiver) {
+        return new Object[]{receiver};
+    }
+
+    public static Object[] create(Object receiver, Object[] arguments) {
+        Object[] objectArguments = new Object[RUNTIME_ARGUMENT_COUNT + arguments.length];
+        objectArguments[RECEIVER_INDEX] = receiver;
+        arraycopy(arguments, 0, objectArguments, RUNTIME_ARGUMENT_COUNT, arguments.length);
+        return objectArguments;
+    }
+
+    public static Object getArgument(Object[] arguments, int index) {
+        return arguments[RUNTIME_ARGUMENT_COUNT + index];
+    }
+
+    public static Object getReceiver(Object[] arguments) {
+        return arguments[RECEIVER_INDEX];
+    }
+
+    public static Object[] extractUserArguments(Object[] arguments) {
+        return copyOfRange(arguments, RUNTIME_ARGUMENT_COUNT, arguments.length);
+    }
+
+    public static int getUserArgumentCount(Object[] arguments) {
+        return arguments.length - RUNTIME_ARGUMENT_COUNT;
+    }
+
+    private static Object[] copyOfRange(Object[] original, int from, int to) {
+        int newLength = to - from;
+        if (newLength < 0) {
+            CompilerDirectives.transferToInterpreter();
+            throw new IllegalArgumentException(from + " > " + to);
+        }
+        Object[] copy = new Object[newLength];
+        arraycopy(original, from, copy, 0, Math.min(original.length - from, newLength));
+        return copy;
+    }
+
+    private static void arraycopy(Object[] src, int srcPos, Object[] dest, int destPos, int length) {
+        for (int i = 0; i < length; i++) {
+            dest[destPos + i] = src[srcPos + i];
+        }
+    }
+
+}