src/loadso/win32/SDL_sysloadso.c
author Sam Lantinga <slouken@libsdl.org>
Thu, 07 May 2009 12:04:53 +0000
changeset 3119 f78ed7625325
parent 2859 99210400e8b9
child 3697 f7b03b6838cb
permissions -rw-r--r--
Fixed dynamic loading on Windows CE
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/*
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    SDL - Simple DirectMedia Layer
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    Copyright (C) 1997-2009 Sam Lantinga
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    This library is free software; you can redistribute it and/or
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    modify it under the terms of the GNU Lesser General Public
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    License as published by the Free Software Foundation; either
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    version 2.1 of the License, or (at your option) any later version.
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    This library is distributed in the hope that it will be useful,
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    but WITHOUT ANY WARRANTY; without even the implied warranty of
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    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
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    Lesser General Public License for more details.
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    You should have received a copy of the GNU Lesser General Public
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    License along with this library; if not, write to the Free Software
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    Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
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    Sam Lantinga
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    slouken@libsdl.org
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*/
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#include "SDL_config.h"
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#ifdef SDL_LOADSO_WIN32
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/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
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/* System dependent library loading routines                           */
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#define WIN32_LEAN_AND_MEAN
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#include <windows.h>
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#include "SDL_loadso.h"
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void *
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SDL_LoadObject(const char *sofile)
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{
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    void *handle = NULL;
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    const char *loaderror = "Unknown error";
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#if defined(_WIN32_WCE)
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    char errbuf[512];
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    wchar_t *errbuf_t = SDL_malloc(512 * sizeof(wchar_t));
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    wchar_t *sofile_t = SDL_malloc((MAX_PATH + 1) * sizeof(wchar_t));
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    MultiByteToWideChar(CP_ACP, MB_PRECOMPOSED, sofile, -1, sofile_t,
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                        MAX_PATH);
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    handle = (void *) LoadLibrary(sofile_t);
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    /* Generate an error message if all loads failed */
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    if (handle == NULL) {
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        FormatMessage((FORMAT_MESSAGE_IGNORE_INSERTS |
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                       FORMAT_MESSAGE_FROM_SYSTEM),
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                      NULL, GetLastError(),
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                      MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),
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                      errbuf_t, SDL_arraysize(errbuf), NULL);
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        WideCharToMultiByte(CP_ACP, 0, errbuf_t, -1, errbuf, 511, NULL, NULL);
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        loaderror = errbuf;
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    }
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    SDL_free(sofile_t);
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    SDL_free(errbuf_t);
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#else /*if defined(__WIN32__) */
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    char errbuf[512];
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    handle = (void *) LoadLibrary(sofile);
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    /* Generate an error message if all loads failed */
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    if (handle == NULL) {
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        FormatMessage((FORMAT_MESSAGE_IGNORE_INSERTS |
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                       FORMAT_MESSAGE_FROM_SYSTEM),
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                      NULL, GetLastError(),
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                      MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),
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                      errbuf, SDL_arraysize(errbuf), NULL);
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        loaderror = errbuf;
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    }
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#endif
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    if (handle == NULL) {
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        SDL_SetError("Failed loading %s: %s", sofile, loaderror);
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    }
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    return (handle);
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}
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void *
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SDL_LoadFunction(void *handle, const char *name)
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{
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    void *symbol = NULL;
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    const char *loaderror = "Unknown error";
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#if defined(_WIN32_WCE)
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    char errbuf[512];
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    int length = SDL_strlen(name);
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    wchar_t *name_t = SDL_malloc((length + 1) * sizeof(wchar_t));
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    wchar_t *errbuf_t = SDL_malloc(512 * sizeof(wchar_t));
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    MultiByteToWideChar(CP_ACP, MB_PRECOMPOSED, name, -1, name_t, length + 1);
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    symbol = (void *) GetProcAddress((HMODULE) handle, name_t);
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    if (symbol == NULL) {
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        FormatMessage((FORMAT_MESSAGE_IGNORE_INSERTS |
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                       FORMAT_MESSAGE_FROM_SYSTEM),
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                      NULL, GetLastError(),
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                      MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),
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                      errbuf_t, SDL_arraysize(errbuf), NULL);
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        WideCharToMultiByte(CP_ACP, 0, errbuf_t, -1, errbuf, 511, NULL, NULL);
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        loaderror = errbuf;
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    }
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    SDL_free(name_t);
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    SDL_free(errbuf_t);
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#else /*if defined(WIN32) */
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    char errbuf[512];
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    symbol = (void *) GetProcAddress((HMODULE) handle, name);
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    if (symbol == NULL) {
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        FormatMessage((FORMAT_MESSAGE_IGNORE_INSERTS |
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                       FORMAT_MESSAGE_FROM_SYSTEM),
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                      NULL, GetLastError(),
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                      MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),
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                      errbuf, SDL_arraysize(errbuf), NULL);
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        loaderror = errbuf;
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    }
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#endif
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    if (symbol == NULL) {
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        SDL_SetError("Failed loading %s: %s", name, loaderror);
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    }
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    return (symbol);
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}
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void
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SDL_UnloadObject(void *handle)
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{
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    if (handle != NULL) {
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        FreeLibrary((HMODULE) handle);
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    }
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}
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#endif /* SDL_LOADSO_WIN32 */
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/* vi: set ts=4 sw=4 expandtab: */