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author | Roland McGrath <roland@gnu.org> | 1995-05-02 06:35:55 +0000 |
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committer | Roland McGrath <roland@gnu.org> | 1995-05-02 06:35:55 +0000 |
commit | d66e34cd423425c348bcc83df127dd19711b0b9a (patch) | |
tree | 97058e776d3b4fe06ef54bc4951596991652183f /elf/dl-init.c | |
parent | 08162fa888913a5153d2fcdc4e1a816b57b1fe56 (diff) | |
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* sysdeps/mach/i386/sysdep.h (SNARF_ARGS, CALL_WITH_SP): Rewritten.
* sysdeps/i386/dl-machine.h: New file.
* sysdeps/stub/dl-machine.h: New file.
* sysdeps/i386/dl-runtime.c: New file.
* sysdeps/stub/dl-runtime.c: New file.
* sysdeps/i386/elf/start.S: New file.
* sysdeps/generic/dl-sysdep.c: New file.
* sysdeps/mach/hurd/dl-sysdep.c: New file.
Diffstat (limited to 'elf/dl-init.c')
-rw-r--r-- | elf/dl-init.c | 86 |
1 files changed, 86 insertions, 0 deletions
diff --git a/elf/dl-init.c b/elf/dl-init.c new file mode 100644 index 0000000000..e3bfc2ccea --- /dev/null +++ b/elf/dl-init.c @@ -0,0 +1,86 @@ +/* Return the next shared object initializer function not yet run. +Copyright (C) 1995 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 Library General Public License as +published by the Free Software Foundation; either version 2 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 +Library General Public License for more details. + +You should have received a copy of the GNU Library General Public +License along with the GNU C Library; see the file COPYING.LIB. If +not, write to the Free Software Foundation, Inc., 675 Mass Ave, +Cambridge, MA 02139, USA. */ + +#include <stddef.h> +#include <link.h> + + +Elf32_Addr +_dl_init_next (void) +{ + struct link_map *l; + Elf32_Addr init; + + Elf32_Addr next_init (struct link_map *l) + { + if (l->l_init_called) + /* This object is all done. */ + return 0; + if (l->l_init_running) + { + /* This object's initializer was just running. + Now mark it as having run, so this object + will be skipped in the future. */ + l->l_init_called = 1; + l->l_init_running = 0; + return 0; + } + + if (l->l_info[DT_NEEDED]) + { + /* Find each dependency in order, and see if it + needs to run an initializer. */ + const Elf32_Dyn *d; + for (d = l->l_ld; d->d_tag != DT_NULL; ++d) + if (d->d_tag == DT_NEEDED) + { + struct link_map *needed = _dl_map_object + (l, (const char *) (l->l_addr + d->d_un.d_ptr), NULL); + Elf32_Addr init; + --needed->l_opencount; + init = next_init (l); /* Recurse on this dependency. */ + if (init != 0) + return init; + } + } + + if (l->l_info[DT_INIT]) + { + /* Run this object's initializer. */ + l->l_init_running = 1; + return l->l_addr + l->l_info[DT_INIT]->d_un.d_ptr; + } + + /* No initializer for this object. + Mark it so we will skip it in the future. */ + l->l_init_called = 1; + return 0; + } + + /* Look for the first initializer not yet called. */ + l = _dl_loaded; + do + { + init = next_init (l); + l = l->l_next; + } + while (init == 0 && l); + + return init; +} |