--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/graal/com.oracle.jvmci.service/src/com/oracle/jvmci/service/JVMCIClassLoaderFactory.java	Fri May 29 22:27:38 2015 +0200
@@ -0,0 +1,87 @@
+/*
+ * 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.
+ *
+ * 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.jvmci.service;
+
+import java.io.*;
+import java.net.*;
+import java.util.*;
+
+/**
+ * Utility called from the VM to create and register a separate class loader for loading JVMCI
+ * classes (i.e., those in found in lib/jvmci/*.jar).
+ */
+class JVMCIClassLoaderFactory {
+
+    /**
+     * Copy of the {@code UseJVMCIClassLoader} VM option. Set by the VM before the static
+     * initializer is called.
+     */
+    private static boolean useJVMCIClassLoader;
+
+    /**
+     * Registers the JVMCI class loader in the VM.
+     */
+    private static native void init(ClassLoader loader);
+
+    static {
+        init(useJVMCIClassLoader ? newClassLoader() : null);
+    }
+
+    /**
+     * Creates a new class loader for loading JVMCI classes.
+     */
+    private static ClassLoader newClassLoader() {
+        URL[] urls = getJVMCIJarsUrls();
+        ClassLoader parent = null;
+        return URLClassLoader.newInstance(urls, parent);
+    }
+
+    /**
+     * Gets the URLs for lib/jvmci/*.jar.
+     */
+    private static URL[] getJVMCIJarsUrls() {
+        File javaHome = new File(System.getProperty("java.home"));
+        File lib = new File(javaHome, "lib");
+        File jvmci = new File(lib, "jvmci");
+        if (!jvmci.exists()) {
+            throw new InternalError(jvmci + " does not exist");
+        }
+
+        List<URL> urls = new ArrayList<>();
+        for (String fileName : jvmci.list()) {
+            if (fileName.endsWith(".jar")) {
+                File file = new File(jvmci, fileName);
+                if (file.isDirectory()) {
+                    continue;
+                }
+                try {
+                    urls.add(file.toURI().toURL());
+                } catch (MalformedURLException e) {
+                    throw new InternalError(e);
+                }
+            }
+        }
+
+        return urls.toArray(new URL[urls.size()]);
+    }
+}