diff options
Diffstat (limited to 'elf/dl-call_fini.c')
| -rw-r--r-- | elf/dl-call_fini.c | 50 |
1 files changed, 50 insertions, 0 deletions
diff --git a/elf/dl-call_fini.c b/elf/dl-call_fini.c new file mode 100644 index 0000000000..9e7ba10fa2 --- /dev/null +++ b/elf/dl-call_fini.c @@ -0,0 +1,50 @@ +/* Invoke DT_FINI and DT_FINI_ARRAY callbacks. + Copyright (C) 1996-2022 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C 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. + + The GNU C 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 the GNU C Library; if not, see + <https://www.gnu.org/licenses/>. */ + +#include <ldsodefs.h> +#include <sysdep.h> + +void +_dl_call_fini (void *closure_map) +{ + struct link_map *map = closure_map; + + /* When debugging print a message first. */ + if (__glibc_unlikely (GLRO(dl_debug_mask) & DL_DEBUG_IMPCALLS)) + _dl_debug_printf ("\ncalling fini: %s [%lu]\n\n", map->l_name, map->l_ns); + + /* Make sure nothing happens if we are called twice. */ + map->l_init_called = 0; + + ElfW(Dyn) *fini_array = map->l_info[DT_FINI_ARRAY]; + if (fini_array != NULL) + { + ElfW(Addr) *array = (ElfW(Addr) *) (map->l_addr + + fini_array->d_un.d_ptr); + size_t sz = (map->l_info[DT_FINI_ARRAYSZ]->d_un.d_val + / sizeof (ElfW(Addr))); + + while (sz-- > 0) + ((fini_t) array[sz]) (); + } + + /* Next try the old-style destructor. */ + ElfW(Dyn) *fini = map->l_info[DT_FINI]; + if (fini != NULL) + DL_CALL_DT_FINI (map, ((void *) map->l_addr + fini->d_un.d_ptr)); +} |