diff -r 4ebc2e2fb97c -r 71c04702a3d5 src/hotspot/share/prims/nativeLookup.hpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/hotspot/share/prims/nativeLookup.hpp	Tue Sep 12 19:03:39 2017 +0200
@@ -0,0 +1,56 @@
+/*
+ * Copyright (c) 1997, 2015, 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.
+ *
+ */
+
+#ifndef SHARE_VM_PRIMS_NATIVELOOKUP_HPP
+#define SHARE_VM_PRIMS_NATIVELOOKUP_HPP
+
+#include "memory/allocation.hpp"
+#include "runtime/handles.hpp"
+
+// NativeLookup provides an interface for finding DLL entry points for
+// Java native functions.
+
+class NativeLookup : AllStatic {
+ private:
+  // JNI name computation
+  static char* pure_jni_name(const methodHandle& method);
+  static char* long_jni_name(const methodHandle& method);
+  static char* critical_jni_name(const methodHandle& method);
+
+  // Style specific lookup
+  static address lookup_style(const methodHandle& method, char* pure_name, const char* long_name, int args_size, bool os_style, bool& in_base_library, TRAPS);
+  static address lookup_critical_style(const methodHandle& method, char* pure_name, const char* long_name, int args_size, bool os_style);
+  static address lookup_base (const methodHandle& method, bool& in_base_library, TRAPS);
+  static address lookup_entry(const methodHandle& method, bool& in_base_library, TRAPS);
+  static address lookup_entry_prefixed(const methodHandle& method, bool& in_base_library, TRAPS);
+ public:
+  // Lookup native function. May throw UnsatisfiedLinkError.
+  static address lookup(const methodHandle& method, bool& in_base_library, TRAPS);
+  static address lookup_critical_entry(const methodHandle& method);
+
+  // Lookup native functions in base library.
+  static address base_library_lookup(const char* class_name, const char* method_name, const char* signature);
+};
+
+#endif // SHARE_VM_PRIMS_NATIVELOOKUP_HPP