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
36void *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
49void *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
65void SDL_UnloadObject(void *handle)
66{
67    if ( handle != NULL )
68        DosFreeModule((HMODULE) handle);
69}
70
71#endif /* SDL_LOADSO_OS2 */
72