1 /**************************************************************************
2 *
3 * Copyright 2009 VMware, Inc.
4 * Copyright 1999-2008 Brian Paul
5 * All Rights Reserved.
6 *
7 * Permission is hereby granted, free of charge, to any person obtaining a
8 * copy of this software and associated documentation files (the
9 * "Software"), to deal in the Software without restriction, including
10 * without limitation the rights to use, copy, modify, merge, publish,
11 * distribute, sub license, and/or sell copies of the Software, and to
12 * permit persons to whom the Software is furnished to do so, subject to
13 * the following conditions:
14 *
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
18 * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM,
19 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
20 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
21 * USE OR OTHER DEALINGS IN THE SOFTWARE.
22 *
23 * The above copyright notice and this permission notice (including the
24 * next paragraph) shall be included in all copies or substantial portions
25 * of the Software.
26 *
27 **************************************************************************/
28
29
30 #include "pipe/p_config.h"
31 #include "pipe/p_compiler.h"
32
33 #if defined(PIPE_OS_UNIX)
34 #include <dlfcn.h>
35 #endif
36 #if defined(PIPE_OS_WINDOWS)
37 #include <windows.h>
38 #endif
39
40 #include "u_dl.h"
41 #include "u_pointer.h"
42
43
44 struct util_dl_library *
util_dl_open(const char * filename)45 util_dl_open(const char *filename)
46 {
47 #if defined(PIPE_OS_UNIX)
48 return (struct util_dl_library *)dlopen(filename, RTLD_LAZY | RTLD_GLOBAL);
49 #elif defined(PIPE_OS_WINDOWS)
50 return (struct util_dl_library *)LoadLibraryA(filename);
51 #else
52 return NULL;
53 #endif
54 }
55
56
57 util_dl_proc
util_dl_get_proc_address(struct util_dl_library * library,const char * procname)58 util_dl_get_proc_address(struct util_dl_library *library,
59 const char *procname)
60 {
61 #if defined(PIPE_OS_UNIX)
62 return (util_dl_proc) pointer_to_func(dlsym((void *)library, procname));
63 #elif defined(PIPE_OS_WINDOWS)
64 return (util_dl_proc)GetProcAddress((HMODULE)library, procname);
65 #else
66 return (util_dl_proc)NULL;
67 #endif
68 }
69
70
71 void
util_dl_close(struct util_dl_library * library)72 util_dl_close(struct util_dl_library *library)
73 {
74 #if defined(PIPE_OS_UNIX)
75 dlclose((void *)library);
76 #elif defined(PIPE_OS_WINDOWS)
77 FreeLibrary((HMODULE)library);
78 #else
79 (void)library;
80 #endif
81 }
82
83
84 const char *
util_dl_error(void)85 util_dl_error(void)
86 {
87 #if defined(PIPE_OS_UNIX)
88 return dlerror();
89 #elif defined(PIPE_OS_WINDOWS)
90 return "unknown error";
91 #else
92 return "unknown error";
93 #endif
94 }
95