103 lines
3.0 KiB
C
103 lines
3.0 KiB
C
/* Return the next shared object 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_init_next (struct r_scope_elem *searchlist)
|
|
{
|
|
unsigned int i;
|
|
|
|
/* The search list for symbol lookup is a flat list in top-down
|
|
dependency order, so processing that list from back to front gets us
|
|
breadth-first leaf-to-root order. */
|
|
|
|
i = searchlist->r_nlist;
|
|
while (i-- > 0)
|
|
{
|
|
struct link_map *l = searchlist->r_list[i];
|
|
ElfW(Addr) *array;
|
|
|
|
if (l->l_init_called)
|
|
/* This object is all done. */
|
|
continue;
|
|
|
|
/* Check for object which constructors we do not run here.
|
|
XXX Maybe this should be pre-computed, but where? */
|
|
if (l->l_name[0] == '\0' && l->l_type == lt_executable)
|
|
{
|
|
l->l_init_called = 1;
|
|
continue;
|
|
}
|
|
|
|
/* Account for running next constructor. */
|
|
++l->l_runcount;
|
|
|
|
if (l->l_runcount == 1)
|
|
{
|
|
/* Try running the DT_INIT constructor. */
|
|
if (l->l_info[DT_INIT])
|
|
{
|
|
/* Print a debug message if wanted. */
|
|
if (_dl_debug_impcalls)
|
|
_dl_debug_message (1, "\ncalling init: ",
|
|
l->l_name[0] ? l->l_name : _dl_argv[0],
|
|
"\n\n", NULL);
|
|
|
|
return l->l_addr + l->l_info[DT_INIT]->d_un.d_ptr;
|
|
}
|
|
|
|
/* No DT_INIT, so go on with the array. */
|
|
++l->l_runcount;
|
|
}
|
|
|
|
if (l->l_runcount > l->l_initcount)
|
|
{
|
|
/* That were all of the constructors. */
|
|
l->l_runcount = 0;
|
|
l->l_init_called = 1;
|
|
continue;
|
|
}
|
|
|
|
/* Print a debug message if wanted. */
|
|
if (_dl_debug_impcalls && l->l_info[DT_INIT] == NULL
|
|
&& l->l_runcount == 2)
|
|
_dl_debug_message (1, "\ncalling init: ",
|
|
l->l_name[0] ? l->l_name : _dl_argv[0],
|
|
"\n\n", NULL);
|
|
|
|
array = (ElfW(Addr) *) l->l_info[DT_INIT_ARRAY]->d_un.d_ptr;
|
|
return l->l_addr + array[l->l_runcount - 2];
|
|
/* NOTREACHED */
|
|
}
|
|
|
|
|
|
/* Notify the debugger all new objects are now ready to go. */
|
|
_r_debug.r_state = RT_CONSISTENT;
|
|
_dl_debug_state ();
|
|
|
|
return 0;
|
|
}
|