| 1 | /* Platform independent shared object routines for GDB. |
| 2 | |
| 3 | Copyright (C) 2011-2016 Free Software Foundation, Inc. |
| 4 | |
| 5 | This file is part of GDB. |
| 6 | |
| 7 | This program is free software; you can redistribute it and/or modify |
| 8 | it under the terms of the GNU General Public License as published by |
| 9 | the Free Software Foundation; either version 3 of the License, or |
| 10 | (at your option) any later version. |
| 11 | |
| 12 | This program is distributed in the hope that it will be useful, |
| 13 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 15 | GNU General Public License for more details. |
| 16 | |
| 17 | You should have received a copy of the GNU General Public License |
| 18 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
| 19 | |
| 20 | #include "defs.h" |
| 21 | #include "gdb-dlfcn.h" |
| 22 | |
| 23 | #ifdef HAVE_DLFCN_H |
| 24 | #include <dlfcn.h> |
| 25 | #elif __MINGW32__ |
| 26 | #include <windows.h> |
| 27 | #else |
| 28 | /* Unsupported configuration. */ |
| 29 | #define NO_SHARED_LIB |
| 30 | #endif |
| 31 | |
| 32 | #ifdef NO_SHARED_LIB |
| 33 | |
| 34 | void * |
| 35 | gdb_dlopen (const char *filename) |
| 36 | { |
| 37 | gdb_assert_not_reached ("gdb_dlopen should not be called on this platform."); |
| 38 | } |
| 39 | |
| 40 | void * |
| 41 | gdb_dlsym (void *handle, const char *symbol) |
| 42 | { |
| 43 | gdb_assert_not_reached ("gdb_dlsym should not be called on this platform."); |
| 44 | } |
| 45 | |
| 46 | struct cleanup * |
| 47 | make_cleanup_dlclose (void *handle) |
| 48 | { |
| 49 | gdb_assert_not_reached ("make_cleanup_dlclose should not be called on this " |
| 50 | "platform."); |
| 51 | } |
| 52 | |
| 53 | int |
| 54 | gdb_dlclose (void *handle) |
| 55 | { |
| 56 | gdb_assert_not_reached ("gdb_dlclose should not be called on this platform."); |
| 57 | } |
| 58 | |
| 59 | int |
| 60 | is_dl_available (void) |
| 61 | { |
| 62 | return 0; |
| 63 | } |
| 64 | |
| 65 | #else /* NO_SHARED_LIB */ |
| 66 | |
| 67 | void * |
| 68 | gdb_dlopen (const char *filename) |
| 69 | { |
| 70 | void *result; |
| 71 | #ifdef HAVE_DLFCN_H |
| 72 | result = dlopen (filename, RTLD_NOW); |
| 73 | #elif __MINGW32__ |
| 74 | result = (void *) LoadLibrary (filename); |
| 75 | #endif |
| 76 | if (result != NULL) |
| 77 | return result; |
| 78 | |
| 79 | #ifdef HAVE_DLFCN_H |
| 80 | error (_("Could not load %s: %s"), filename, dlerror()); |
| 81 | #else |
| 82 | { |
| 83 | LPVOID buffer; |
| 84 | DWORD dw; |
| 85 | |
| 86 | dw = GetLastError(); |
| 87 | |
| 88 | FormatMessage (FORMAT_MESSAGE_ALLOCATE_BUFFER | FORMAT_MESSAGE_FROM_SYSTEM | |
| 89 | FORMAT_MESSAGE_IGNORE_INSERTS, |
| 90 | NULL, dw, MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), |
| 91 | (LPTSTR) &buffer, |
| 92 | 0, NULL); |
| 93 | |
| 94 | error (_("Could not load %s: %s"), filename, (char *) buffer); |
| 95 | } |
| 96 | #endif |
| 97 | } |
| 98 | |
| 99 | void * |
| 100 | gdb_dlsym (void *handle, const char *symbol) |
| 101 | { |
| 102 | #ifdef HAVE_DLFCN_H |
| 103 | return dlsym (handle, symbol); |
| 104 | #elif __MINGW32__ |
| 105 | return (void *) GetProcAddress ((HMODULE) handle, symbol); |
| 106 | #endif |
| 107 | } |
| 108 | |
| 109 | int |
| 110 | gdb_dlclose (void *handle) |
| 111 | { |
| 112 | #ifdef HAVE_DLFCN_H |
| 113 | return dlclose (handle); |
| 114 | #elif __MINGW32__ |
| 115 | return !((int) FreeLibrary ((HMODULE) handle)); |
| 116 | #endif |
| 117 | } |
| 118 | |
| 119 | static void |
| 120 | do_dlclose_cleanup (void *handle) |
| 121 | { |
| 122 | gdb_dlclose (handle); |
| 123 | } |
| 124 | |
| 125 | struct cleanup * |
| 126 | make_cleanup_dlclose (void *handle) |
| 127 | { |
| 128 | return make_cleanup (do_dlclose_cleanup, handle); |
| 129 | } |
| 130 | |
| 131 | int |
| 132 | is_dl_available (void) |
| 133 | { |
| 134 | return 1; |
| 135 | } |
| 136 | |
| 137 | #endif /* NO_SHARED_LIB */ |