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/* Do relocations for ELF dynamic linking.
Copyright (C) 1995, 1996, 1997 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. */
/* This file may be included twice, to define both
`elf_dynamic_do_rel' and `elf_dynamic_do_rela'. */
#ifdef DO_RELA
# define elf_dynamic_do_rel elf_dynamic_do_rela
# define Rel Rela
# define elf_machine_rel elf_machine_rela
#endif
#ifndef VERSYMIDX
# define VERSYMIDX(sym) (DT_NUM + DT_PROCNUM + DT_VERSIONTAGIDX (sym))
#endif
/* Perform the relocations in MAP on the running program image as specified
by RELTAG, SZTAG. If LAZY is nonzero, this is the first pass on PLT
relocations; they should be set up to call _dl_runtime_resolve, rather
than fully resolved now. */
static inline void
elf_dynamic_do_rel (struct link_map *map,
int reltag, int sztag,
int lazy)
{
const ElfW(Rel) *r
= (const ElfW(Rel) *) (map->l_addr + map->l_info[reltag]->d_un.d_ptr);
const ElfW(Rel) *end = &r[map->l_info[sztag]->d_un.d_val / sizeof *r];
if (lazy)
/* Doing lazy PLT relocations; they need very little info. */
for (; r < end; ++r)
elf_machine_lazy_rel (map, r);
else
{
const ElfW(Sym) *const symtab =
(const ElfW(Sym) *) (map->l_addr + map->l_info[DT_SYMTAB]->d_un.d_ptr);
if (map->l_info[VERSYMIDX (DT_VERSYM)])
{
const ElfW(Half) *const version =
(const ElfW(Half) *) (map->l_addr
+ map->l_info[VERSYMIDX (DT_VERSYM)]->d_un.d_ptr);
for (; r < end; ++r)
{
ElfW(Half) ndx = version[ELFW(R_SYM) (r->r_info)];
elf_machine_rel (map, r, &symtab[ELFW(R_SYM) (r->r_info)],
&map->l_versions[ndx]);
}
}
else
for (; r < end; ++r)
elf_machine_rel (map, r, &symtab[ELFW(R_SYM) (r->r_info)], NULL);
}
}
#undef elf_dynamic_do_rel
#undef Rel
#undef elf_machine_rel
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