1/*
2 * Copyright (c) 1997, 2015, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
23 */
24
25#ifndef SHARE_VM_PRIMS_NATIVELOOKUP_HPP
26#define SHARE_VM_PRIMS_NATIVELOOKUP_HPP
27
28#include "memory/allocation.hpp"
29#include "runtime/handles.hpp"
30
31// NativeLookup provides an interface for finding DLL entry points for
32// Java native functions.
33
34class NativeLookup : AllStatic {
35 private:
36  // JNI name computation
37  static char* pure_jni_name(const methodHandle& method);
38  static char* long_jni_name(const methodHandle& method);
39  static char* critical_jni_name(const methodHandle& method);
40
41  // Style specific lookup
42  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);
43  static address lookup_critical_style(const methodHandle& method, char* pure_name, const char* long_name, int args_size, bool os_style);
44  static address lookup_base (const methodHandle& method, bool& in_base_library, TRAPS);
45  static address lookup_entry(const methodHandle& method, bool& in_base_library, TRAPS);
46  static address lookup_entry_prefixed(const methodHandle& method, bool& in_base_library, TRAPS);
47 public:
48  // Lookup native function. May throw UnsatisfiedLinkError.
49  static address lookup(const methodHandle& method, bool& in_base_library, TRAPS);
50  static address lookup_critical_entry(const methodHandle& method);
51
52  // Lookup native functions in base library.
53  static address base_library_lookup(const char* class_name, const char* method_name, const char* signature);
54};
55
56#endif // SHARE_VM_PRIMS_NATIVELOOKUP_HPP
57