glibc/elf/dl-preinit.c
Ulrich Drepper e28bacf578 Update.
* elf/Makefile (dl-routines): Add preinit.
	* elf/Versions [ld.so] (GLIBC_2.2): Export _dl_preinit_next.
	* elf/link.h (struct link_map): Add new field l_preinitcount.
	* elf/dl-preinit.c: New file.
	* elf/dynamic-link.h: Initialize l_preinitcount.
	* sysdeps/i386/dl-machine.h (RTLD_START): Call pre-init functions.
1999-07-24 22:17:17 +00:00

50 lines
1.7 KiB
C

/* Return the next shared object pre-initializer function not yet run.
Copyright (C) 1995, 1996, 1998, 1999 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., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
#include <stddef.h>
#include <elf/ldsodefs.h>
/* Run initializers for MAP and its dependencies, in inverse dependency
order (that is, leaf nodes first). */
ElfW(Addr)
internal_function
_dl_preinit_next (struct r_scope_elem *searchlist)
{
struct link_map *l = searchlist->r_list[0];
ElfW(Addr) *array;
if (l->l_runcount >= l->l_preinitcount)
{
/* That were all of the constructors. */
l->l_runcount = 0;
return 0;
}
/* Print a debug message if wanted. */
if (_dl_debug_impcalls && l->l_runcount == 0)
_dl_debug_message (1, "\ncalling preinit: ",
l->l_name[0] ? l->l_name : _dl_argv[0],
"\n\n", NULL);
array = (ElfW(Addr) *) l->l_info[DT_PREINIT_ARRAY]->d_un.d_ptr;
return l->l_addr + array[l->l_runcount++];
}