1 /*
2 SDL - Simple DirectMedia Layer
3 Copyright (C) 1997-2012 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_OS2
25
26 /* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
27 /* System dependent library loading routines */
28
29 #include <stdio.h>
30 #define INCL_DOSERRORS
31 #define INCL_DOSMODULEMGR
32 #include <os2.h>
33
34 #include "SDL_loadso.h"
35
SDL_LoadObject(const char * sofile)36 void *SDL_LoadObject(const char *sofile)
37 {
38 HMODULE handle = NULL;
39 char buf[512];
40 APIRET ulrc = DosLoadModule(buf, sizeof (buf), (char *) sofile, &handle);
41
42 /* Generate an error message if all loads failed */
43 if ((ulrc != NO_ERROR) || (handle == NULL))
44 SDL_SetError("Failed loading %s: %s", sofile, buf);
45
46 return((void *) handle);
47 }
48
SDL_LoadFunction(void * handle,const char * name)49 void *SDL_LoadFunction(void *handle, const char *name)
50 {
51 const char *loaderror = "Unknown error";
52 void *symbol = NULL;
53 APIRET ulrc = DosQueryProcAddr((HMODULE)handle, 0, (char *)name, &symbol);
54 if (ulrc == ERROR_INVALID_HANDLE)
55 loaderror = "Invalid module handle";
56 else if (ulrc == ERROR_INVALID_NAME)
57 loaderror = "Symbol not found";
58
59 if (symbol == NULL)
60 SDL_SetError("Failed loading %s: %s", name, loaderror);
61
62 return(symbol);
63 }
64
SDL_UnloadObject(void * handle)65 void SDL_UnloadObject(void *handle)
66 {
67 if ( handle != NULL )
68 DosFreeModule((HMODULE) handle);
69 }
70
71 #endif /* SDL_LOADSO_OS2 */
72