--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/graal/com.oracle.nfi/src/com/oracle/nfi/api/NativeFunctionHandle.java	Tue Aug 05 15:58:11 2014 +0200
@@ -0,0 +1,43 @@
+/*
+ * Copyright (c) 2013, 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 com.oracle.nfi.api;
+
+/**
+ * A handle that can be used to {@linkplain #call(Object[]) call} a native function.
+ */
+public interface NativeFunctionHandle {
+
+    /**
+     * Calls the native function.
+     * <p>
+     * The caller is responsible for ensuring {@code args} comply with the platform ABI (e.g. <a
+     * href="http://www.uclibc.org/docs/psABI-x86_64.pdf"> Unix AMD64 ABI</a>). If the library
+     * function has struct parameters, the fields of the struct must be passed as individual
+     * arguments.
+     *
+     * @param args the arguments that will be passed to the native function
+     * @return boxed return value of the function call
+     */
+    Object call(Object... args);
+
+}