Mercurial > sdl-ios-xcode

annotate src/loadso/os2/SDL_sysloadso.c @ 4347:38f22ed3a433 SDL-1.2

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Option to fix bug #851 For some people setting the period size works better (and is what SDL 1.2.13 did), but for most people it's the same or worse. You can use an environment variable to pick which one you want.
author Sam Lantinga <slouken@libsdl.org>
date Sat, 17 Oct 2009 06:55:17 +0000
parents a1b03ba2fcd0
children
rev   line source
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1 /*
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2 SDL - Simple DirectMedia Layer
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3 Copyright (C) 1997-2009 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 */