/*

    SDL - Simple DirectMedia Layer

    Copyright (C) 1997-2006 Sam Lantinga

    This library is free software; you can redistribute it and/or

    modify it under the terms of the GNU Lesser General Public

    License as published by the Free Software Foundation; either

    version 2.1 of the License, or (at your option) any later version.

    This library is distributed in the hope that it will be useful,

    but WITHOUT ANY WARRANTY; without even the implied warranty of

    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

    Lesser General Public License for more details.

    You should have received a copy of the GNU Lesser General Public

    License along with this library; if not, write to the Free Software

    Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA

    Sam Lantinga

    slouken@libsdl.org

*/

#include "SDL_config.h"

#ifdef SDL_LOADSO_OS2

/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */

/* System dependent library loading routines                           */

#include <stdio.h>

#define INCL_DOSERRORS

#define INCL_DOSMODULEMGR

#include <os2.h>

#include "SDL_loadso.h"

void *SDL_LoadObject(const char *sofile)

{

    HMODULE handle = NULL;

    char buf[512];

    APIRET ulrc = DosLoadModule(buf, sizeof (buf), (char *) sofile, &handle);

    /* Generate an error message if all loads failed */

    if ((ulrc != NO_ERROR) || (handle == NULL))

        SDL_SetError("Failed loading %s: %s", sofile, buf);

    return((void *) handle);

}

void *SDL_LoadFunction(void *handle, const char *name)

{

    const char *loaderror = "Unknown error";

    void *symbol = NULL;

    APIRET ulrc = DosQueryProcAddr((HMODULE)handle, 0, (char *)name, &symbol);

    if (ulrc == ERROR_INVALID_HANDLE)

        loaderror = "Invalid module handle";

    else if (ulrc == ERROR_INVALID_NAME)

        loaderror = "Symbol not found";

    if (symbol == NULL)

        SDL_SetError("Failed loading %s: %s", name, loaderror);

    return(symbol);

}

void SDL_UnloadObject(void *handle)

{

    if ( handle != NULL )

        DosFreeModule((HMODULE) handle);

}

#endif /* SDL_LOADSO_OS2 */