/* Simple DirectMedia Layer Copyright (C) 1997-2022 Sam Lantinga This software is provided 'as-is', without any express or implied warranty. In no event will the authors be held liable for any damages arising from the use of this software. Permission is granted to anyone to use this software for any purpose, including commercial applications, and to alter it and redistribute it freely, subject to the following restrictions: 1. The origin of this software must not be misrepresented; you must not claim that you wrote the original software. If you use this software in a product, an acknowledgment in the product documentation would be appreciated but is not required. 2. Altered source versions must be plainly marked as such, and must not be misrepresented as being the original software. 3. This notice may not be removed or altered from any source distribution. */ #include "../../SDL_internal.h" #ifdef SDL_LOADSO_OS2 /* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */ /* System dependent library loading routines */ #include "SDL_loadso.h" #include "../../core/os2/SDL_os2.h" #define INCL_DOSMODULEMGR #define INCL_DOSERRORS #include void * SDL_LoadObject(const char *sofile) { ULONG ulRC; HMODULE hModule; CHAR acError[256]; PSZ pszModName; if (!sofile) { SDL_InvalidParamError("sofile"); return NULL; } pszModName = OS2_UTF8ToSys(sofile); ulRC = DosLoadModule(acError, sizeof(acError), pszModName, &hModule); if (ulRC != NO_ERROR && !SDL_strrchr(pszModName, '\\') && !SDL_strrchr(pszModName, '/')) { /* strip .dll extension and retry only if name has no path. */ size_t len = SDL_strlen(pszModName); if (len > 4 && SDL_strcasecmp(&pszModName[len - 4], ".dll") == 0) { pszModName[len - 4] = '\0'; ulRC = DosLoadModule(acError, sizeof(acError), pszModName, &hModule); } } if (ulRC != NO_ERROR) { SDL_SetError("Failed loading %s: %s (E%u)", sofile, acError, ulRC); hModule = NULLHANDLE; } SDL_free(pszModName); return (void *)hModule; } void * SDL_LoadFunction(void *handle, const char *name) { ULONG ulRC; PFN pFN; ulRC = DosQueryProcAddr((HMODULE)handle, 0, name, &pFN); if (ulRC != NO_ERROR) { /* retry with an underscore prepended, e.g. for gcc-built dlls. */ SDL_bool isstack; size_t len = SDL_strlen(name) + 1; char *_name = SDL_small_alloc(char, len + 1, &isstack); _name[0] = '_'; SDL_memcpy(&_name[1], name, len); ulRC = DosQueryProcAddr((HMODULE)handle, 0, _name, &pFN); SDL_small_free(_name, isstack); } if (ulRC != NO_ERROR) { SDL_SetError("Failed loading procedure %s (E%u)", name, ulRC); return NULL; } return (void *)pFN; } void SDL_UnloadObject(void *handle) { if (handle != NULL) { DosFreeModule((HMODULE)handle); } } #endif /* SDL_LOADSO_OS2 */ /* vi: set ts=4 sw=4 expandtab: */