| 1 | /* |
| 2 | SDL - Simple DirectMedia Layer |
| 3 | Copyright (C) 1997-2009 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 | |
| 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 | |
| 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 | |
| 62 | void SDL_UnloadObject(void *handle) |
| 63 | { |
| 64 | if ( handle != NULL ) { |
| 65 | dlclose(handle); |
| 66 | } |
| 67 | } |
| 68 | |
| 69 | #endif /* SDL_LOADSO_DLOPEN */ |