1 /*
2 SDL - Simple DirectMedia Layer
3 Copyright (C) 1997-2006 Sam Lantinga
4
5 This library is free software; you can redistribute it and/or
6 modify it under the terms of the GNU Lesser General Public
7 License as published by the Free Software Foundation; either
8 version 2.1 of the License, or (at your option) any later version.
9
10 This library is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 Lesser General Public License for more details.
14
15 You should have received a copy of the GNU Lesser General Public
16 License along with this library; if not, write to the Free Software
17 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
18
19 Sam Lantinga
20 slouken@libsdl.org
21 */
22 #include "SDL_config.h"
23
24 #ifdef SDL_LOADSO_DLOPEN
25
26 /* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
27 /* System dependent library loading routines */
28
29 #include <stdio.h>
30 #include <dlfcn.h>
31
32 #include "SDL_loadso.h"
33
SDL_LoadObject(const char * sofile)34 void *SDL_LoadObject(const char *sofile)
35 {
36 void *handle = dlopen(sofile, RTLD_NOW);
37 const char *loaderror = (char *)dlerror();
38 if ( handle == NULL ) {
39 SDL_SetError("Failed loading %s: %s", sofile, loaderror);
40 }
41 return(handle);
42 }
43
SDL_LoadFunction(void * handle,const char * name)44 void *SDL_LoadFunction(void *handle, const char *name)
45 {
46 void *symbol = dlsym(handle, name);
47 if ( symbol == NULL ) {
48 /* append an underscore for platforms that need that. */
49 size_t len = 1+SDL_strlen(name)+1;
50 char *_name = SDL_stack_alloc(char, len);
51 _name[0] = '_';
52 SDL_strlcpy(&_name[1], name, len);
53 symbol = dlsym(handle, _name);
54 SDL_stack_free(_name);
55 if ( symbol == NULL ) {
56 SDL_SetError("Failed loading %s: %s", name, (const char *)dlerror());
57 }
58 }
59 return(symbol);
60 }
61
SDL_UnloadObject(void * handle)62 void SDL_UnloadObject(void *handle)
63 {
64 if ( handle != NULL ) {
65 dlclose(handle);
66 }
67 }
68
69 #endif /* SDL_LOADSO_DLOPEN */
70