70 lines
2.0 KiB
C
70 lines
2.0 KiB
C
/* Return the next shared object initializer function not yet run.
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Copyright (C) 1995, 1996 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Library General Public License as
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published by the Free Software Foundation; either version 2 of the
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License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public
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License along with the GNU C Library; see the file COPYING.LIB. If
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not, write to the Free Software Foundation, Inc., 675 Mass Ave,
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Cambridge, MA 02139, USA. */
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#include <stddef.h>
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#include <link.h>
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/* Run initializers for MAP and its dependencies, in inverse dependency
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order (that is, leaf nodes first). */
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Elf32_Addr
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_dl_init_next (struct link_map *map)
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{
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unsigned int i;
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/* The search list for symbol lookup is a flat list in top-down
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dependency order, so processing that list from back to front gets us
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breadth-first leaf-to-root order. */
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i = map->l_nsearchlist;
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while (i-- > 0)
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{
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struct link_map *l = map->l_searchlist[i];
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if (l->l_init_called)
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/* This object is all done. */
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continue;
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if (l->l_init_running)
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{
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/* This object's initializer was just running.
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Now mark it as having run, so this object
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will be skipped in the future. */
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l->l_init_running = 0;
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l->l_init_called = 1;
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continue;
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}
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if (l->l_info[DT_INIT] &&
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!(l->l_name[0] == '\0' && l->l_type == lt_executable))
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{
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/* Run this object's initializer. */
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l->l_init_running = 1;
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return l->l_addr + l->l_info[DT_INIT]->d_un.d_ptr;
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}
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/* No initializer for this object.
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Mark it so we will skip it in the future. */
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l->l_init_called = 1;
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}
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return 0;
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}
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