1/************************************************************************** 2 * 3 * Copyright 2009 VMware, Inc. 4 * Copyright 1999-2008 Brian Paul 5 * All Rights Reserved. 6 * 7 * Permission is hereby granted, free of charge, to any person obtaining a 8 * copy of this software and associated documentation files (the 9 * "Software"), to deal in the Software without restriction, including 10 * without limitation the rights to use, copy, modify, merge, publish, 11 * distribute, sub license, and/or sell copies of the Software, and to 12 * permit persons to whom the Software is furnished to do so, subject to 13 * the following conditions: 14 * 15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 17 * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL 18 * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, 19 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR 20 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE 21 * USE OR OTHER DEALINGS IN THE SOFTWARE. 22 * 23 * The above copyright notice and this permission notice (including the 24 * next paragraph) shall be included in all copies or substantial portions 25 * of the Software. 26 * 27 **************************************************************************/ 28 29 30#include "pipe/p_config.h" 31#include "pipe/p_compiler.h" 32 33#if defined(PIPE_OS_UNIX) 34#include <dlfcn.h> 35#endif 36#if defined(PIPE_OS_WINDOWS) 37#include <windows.h> 38#endif 39 40#include "u_dl.h" 41#include "u_pointer.h" 42 43 44struct util_dl_library * 45util_dl_open(const char *filename) 46{ 47#if defined(PIPE_OS_UNIX) 48 return (struct util_dl_library *)dlopen(filename, RTLD_LAZY | RTLD_GLOBAL); 49#elif defined(PIPE_OS_WINDOWS) 50 return (struct util_dl_library *)LoadLibraryA(filename); 51#else 52 return NULL; 53#endif 54} 55 56 57util_dl_proc 58util_dl_get_proc_address(struct util_dl_library *library, 59 const char *procname) 60{ 61#if defined(PIPE_OS_UNIX) 62 return (util_dl_proc) pointer_to_func(dlsym((void *)library, procname)); 63#elif defined(PIPE_OS_WINDOWS) 64 return (util_dl_proc)GetProcAddress((HMODULE)library, procname); 65#else 66 return (util_dl_proc)NULL; 67#endif 68} 69 70 71void 72util_dl_close(struct util_dl_library *library) 73{ 74#if defined(PIPE_OS_UNIX) 75 dlclose((void *)library); 76#elif defined(PIPE_OS_WINDOWS) 77 FreeLibrary((HMODULE)library); 78#else 79 (void)library; 80#endif 81} 82 83 84const char * 85util_dl_error(void) 86{ 87#if defined(PIPE_OS_UNIX) 88 return dlerror(); 89#elif defined(PIPE_OS_WINDOWS) 90 return "unknown error"; 91#else 92 return "unknown error"; 93#endif 94} 95