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annotate src/loadso/dlopen/SDL_loadso.c @ 1228:f4a3a4129d04

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From Mike Frysinger and/or Gentoo: - libsdl-SDL_stretch-PIC.patch ignoring the general fact of how SDL_stretch relies on executing dynamic code, the inline asm should let gcc handle the a details for getting the actual address for _copy_row as it will do the right thing test case: http://dev.gentoo.org/~vapier/libsdl/sdl-stretch.tar.bz2
author Ryan C. Gordon <icculus@icculus.org>
date Thu, 05 Jan 2006 07:20:12 +0000
parents e9cf8c1b4590
children c9b51268668f
rev   line source
1173
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1 /*
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2 SDL - Simple DirectMedia Layer
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3 Copyright (C) 1997-2004 Sam Lantinga
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4
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5 This library is free software; you can redistribute it and/or
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6 modify it under the terms of the GNU Library General Public
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7 License as published by the Free Software Foundation; either
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8 version 2 of the License, or (at your option) any later version.
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9
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10 This library is distributed in the hope that it will be useful,
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11 but WITHOUT ANY WARRANTY; without even the implied warranty of
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12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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13 Library General Public License for more details.
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14
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15 You should have received a copy of the GNU Library General Public
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16 License along with this library; if not, write to the Free
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17 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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18
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19 Sam Lantinga
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20 slouken@libsdl.org
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21 */
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22
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23 #ifdef SAVE_RCSID
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24 static char rcsid =
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25 "@(#) $Id$";
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26 #endif
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27
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28 /* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
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29 /* System dependent library loading routines */
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30
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31 #if !SDL_INTERNAL_BUILDING_LOADSO
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32 #error Do not compile directly...compile src/SDL_loadso.c instead!
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33 #endif
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34
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35 #if !defined(USE_DLOPEN)
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36 #error Compiling for the wrong platform?
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37 #endif
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38
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39 #include <stdio.h>
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40 #include <dlfcn.h>
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41
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42 #include "SDL_types.h"
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43 #include "SDL_error.h"
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44 #include "SDL_loadso.h"
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45
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46 void *SDL_LoadObject(const char *sofile)
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47 {
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48 void *handle = dlopen(sofile, RTLD_NOW);
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49 const char *loaderror = (char *)dlerror();
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50 if ( handle == NULL ) {
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51 SDL_SetError("Failed loading %s: %s", sofile, loaderror);
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52 }
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53 return(handle);
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54 }
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55
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56 void *SDL_LoadFunction(void *handle, const char *name)
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57 {
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58 void *symbol = dlsym(handle, name);
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59 if ( symbol == NULL ) {
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60 SDL_SetError("Failed loading %s: %s", name, (const char *)dlerror());
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61 }
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62 return(symbol);
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63 }
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64
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65 void SDL_UnloadObject(void *handle)
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66 {
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67 if ( handle != NULL ) {
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68 dlclose(handle);
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69 }
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70 }
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71