Update.
[glibc.git] / elf / do-rel.h
blobcf39d1df08ca72d7595f19d6c5a6b9ce919969a4
1 /* Do relocations for ELF dynamic linking.
2 Copyright (C) 1995,96,97,98,99,2000 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
5 The GNU C Library is free software; you can redistribute it and/or
6 modify it under the terms of the GNU Library General Public License as
7 published by the Free Software Foundation; either version 2 of the
8 License, or (at your option) any later version.
10 The GNU C Library is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 Library General Public License for more details.
15 You should have received a copy of the GNU Library General Public
16 License along with the GNU C Library; see the file COPYING.LIB. If not,
17 write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
18 Boston, MA 02111-1307, USA. */
20 /* This file may be included twice, to define both
21 `elf_dynamic_do_rel' and `elf_dynamic_do_rela'. */
23 #ifdef DO_RELA
24 # define elf_dynamic_do_rel elf_dynamic_do_rela
25 # define Rel Rela
26 # define elf_machine_rel elf_machine_rela
27 #endif
29 #ifndef VERSYMIDX
30 # define VERSYMIDX(sym) (DT_NUM + DT_THISPROCNUM + DT_VERSIONTAGIDX (sym))
31 #endif
33 /* Perform the relocations in MAP on the running program image as specified
34 by RELTAG, SZTAG. If LAZY is nonzero, this is the first pass on PLT
35 relocations; they should be set up to call _dl_runtime_resolve, rather
36 than fully resolved now. */
38 static inline void
39 elf_dynamic_do_rel (struct link_map *map,
40 ElfW(Addr) reladdr, ElfW(Addr) relsize,
41 int lazy)
43 const ElfW(Rel) *r = (const void *) reladdr;
44 const ElfW(Rel) *end = (const void *) (reladdr + relsize);
46 if (lazy)
48 /* Doing lazy PLT relocations; they need very little info. */
49 ElfW(Addr) l_addr = map->l_addr;
50 for (; r < end; ++r)
51 elf_machine_lazy_rel (map, l_addr, r);
53 else
55 const ElfW(Sym) *const symtab =
56 (const void *) D_PTR (map, l_info[DT_SYMTAB]);
58 if (map->l_info[VERSYMIDX (DT_VERSYM)])
60 const ElfW(Half) *const version =
61 (const void *) D_PTR (map, l_info[VERSYMIDX (DT_VERSYM)]);
63 for (; r < end; ++r)
65 ElfW(Half) ndx = version[ELFW(R_SYM) (r->r_info)];
66 elf_machine_rel (map, r, &symtab[ELFW(R_SYM) (r->r_info)],
67 &map->l_versions[ndx],
68 (void *) (map->l_addr + r->r_offset));
71 else
72 for (; r < end; ++r)
73 elf_machine_rel (map, r, &symtab[ELFW(R_SYM) (r->r_info)], NULL,
74 (void *) (map->l_addr + r->r_offset));
78 #undef elf_dynamic_do_rel
79 #undef Rel
80 #undef elf_machine_rel