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annotate src/loadso/os2/SDL_sysloadso.c @ 1861:b42823412c3b

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Fixed bug #232 ------- Comment #2 From Matthias Geissert 2006-05-24 07:54 [reply] ------- See http://dri.sourceforge.net/doc/DRIuserguide.html, section 11.5. There is written that you need to use RTLD_GLOBAL, since, otherwise, nested open of dynamic libraries doesn't work. However, This is necassary in this case, since libGL opens the hardware-specific driver/library. I hope this helps you.
author Sam Lantinga <slouken@libsdl.org>
date Tue, 20 Jun 2006 03:52:41 +0000
parents 92947e3a18db
children 782fd950bd46 c121d94672cb a1b03ba2fcd0
rev   line source
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1 /*
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2 SDL - Simple DirectMedia Layer
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3 Copyright (C) 1997-2006 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 Lesser General Public
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7 License as published by the Free Software Foundation; either
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8 version 2.1 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 Lesser 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 Lesser General Public
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16 License along with this library; if not, write to the Free Software
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17 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 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 #include "SDL_config.h"
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23
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24 #ifdef SDL_LOADSO_OS2
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25
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26 /* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
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27 /* System dependent library loading routines */
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28
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29 #include <stdio.h>
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30 #define INCL_DOSERRORS
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31 #define INCL_DOSMODULEMGR
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32 #include <os2.h>
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33
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34 #include "SDL_loadso.h"
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35
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36 void *SDL_LoadObject(const char *sofile)
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37 {
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38 HMODULE handle = NULL;
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39 char buf[512];
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40 APIRET ulrc = DosLoadModule(buf, sizeof (buf), (char *) sofile, &handle);
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41
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42 /* Generate an error message if all loads failed */
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43 if ((ulrc != NO_ERROR) || (handle == NULL))
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44 SDL_SetError("Failed loading %s: %s", sofile, buf);
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45
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46 return((void *) handle);
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47 }
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48
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49 void *SDL_LoadFunction(void *handle, const char *name)
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50 {
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51 const char *loaderror = "Unknown error";
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52 void *symbol = NULL;
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53 APIRET ulrc = DosQueryProcAddr((HMODULE)handle, 0, (char *)name, &symbol);
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54 if (ulrc == ERROR_INVALID_HANDLE)
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55 loaderror = "Invalid module handle";
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56 else if (ulrc == ERROR_INVALID_NAME)
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57 loaderror = "Symbol not found";
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58
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59 if (symbol == NULL)
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60 SDL_SetError("Failed loading %s: %s", name, loaderror);
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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 DosFreeModule((HMODULE) handle);
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69 }
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70
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71 #endif /* SDL_LOADSO_OS2 */