Mercurial > sdl-ios-xcode

annotate src/loadso/os2/SDL_sysloadso.c @ 3798:c8b3d3d13ed1 SDL-ryan-multiple-audio-device

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Audio bootstraps can now specify that a driver is only to be used if explicitly requested (for things like the "disk" driver that is always available but you would never want to default to using). Trimmed out code that can be handled by stubs in the core. The "dummy" driver is pretty damned small now. :)
author Ryan C. Gordon <icculus@icculus.org>
date Wed, 04 Oct 2006 21:27:53 +0000
parents c121d94672cb
children 3e42ad69f4a3
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 *
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37 SDL_LoadObject(const char *sofile)
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38 {
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39 HMODULE handle = NULL;
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40 char buf[512];
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41 APIRET ulrc = DosLoadModule(buf, sizeof(buf), (char *) sofile, &handle);
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42
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43 /* Generate an error message if all loads failed */
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44 if ((ulrc != NO_ERROR) || (handle == NULL))
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45 SDL_SetError("Failed loading %s: %s", sofile, buf);
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46
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47 return ((void *) handle);
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48 }
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49
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50 void *
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51 SDL_LoadFunction(void *handle, const char *name)
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52 {
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53 const char *loaderror = "Unknown error";
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54 void *symbol = NULL;
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55 APIRET ulrc =
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56 DosQueryProcAddr((HMODULE) handle, 0, (char *) name, &symbol);
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57 if (ulrc == ERROR_INVALID_HANDLE)
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58 loaderror = "Invalid module handle";
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59 else if (ulrc == ERROR_INVALID_NAME)
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60 loaderror = "Symbol not found";
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61
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62 if (symbol == NULL)
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63 SDL_SetError("Failed loading %s: %s", name, loaderror);
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64
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65 return (symbol);
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66 }
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67
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68 void
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69 SDL_UnloadObject(void *handle)
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70 {
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71 if (handle != NULL)
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72 DosFreeModule((HMODULE) handle);
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73 }
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74
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75 #endif /* SDL_LOADSO_OS2 */
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76 /* vi: set ts=4 sw=4 expandtab: */