mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-24 22:10:13 +00:00
7090d3caa1
static, add always_inline attribute. (elf_machine_rela): Likewise. (elf_machine_lazy_rel): Likewise. * elf/dynamic-link.h (elf_get_dynamic_info): Make static dependend on !RESOLVE so that it's not defined in local scope. * locale/weight.h (findidx): Remove static, it's not supported anymore with GCC 4.0 in a block scope. * locale/weightwc.h (findidx): Likewise. * posix/regcomp.c (seek_collating_symbol_entry): Likewise. (lookup_collation_sequence_value): Likewise. (build_range_exp): Likewise. (build_collating_symbol): Likewise. * iconv/iconvconfig.c (write_output): Likewise. * elf/do-rel.h (elf_dynamic_do_rel): Likewise.
140 lines
4.9 KiB
C
140 lines
4.9 KiB
C
/* Do relocations for ELF dynamic linking.
|
|
Copyright (C) 1995-2003, 2004 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 Lesser General Public
|
|
License as published by the Free Software Foundation; either
|
|
version 2.1 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
|
|
Lesser General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Lesser General Public
|
|
License along with the GNU C Library; 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 RELCOUNT_IDX VERSYMIDX (DT_RELACOUNT)
|
|
# define Rel Rela
|
|
# define elf_machine_rel elf_machine_rela
|
|
# define elf_machine_rel_relative elf_machine_rela_relative
|
|
#else
|
|
# define RELCOUNT_IDX VERSYMIDX (DT_RELCOUNT)
|
|
#endif
|
|
|
|
#ifndef DO_ELF_MACHINE_REL_RELATIVE
|
|
# define DO_ELF_MACHINE_REL_RELATIVE(map, l_addr, relative) \
|
|
elf_machine_rel_relative (l_addr, relative, \
|
|
(void *) (l_addr + relative->r_offset))
|
|
#endif
|
|
|
|
#ifndef VERSYMIDX
|
|
# define VERSYMIDX(sym) (DT_NUM + DT_THISPROCNUM + DT_VERSIONTAGIDX (sym))
|
|
#endif
|
|
#ifndef VALIDX
|
|
# define VALIDX(tag) (DT_NUM + DT_THISPROCNUM + DT_VERSIONTAGNUM \
|
|
+ DT_EXTRANUM + DT_VALTAGIDX (tag))
|
|
#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. */
|
|
|
|
auto inline void __attribute__ ((always_inline))
|
|
elf_dynamic_do_rel (struct link_map *map,
|
|
ElfW(Addr) reladdr, ElfW(Addr) relsize,
|
|
int lazy)
|
|
{
|
|
const ElfW(Rel) *r = (const void *) reladdr;
|
|
const ElfW(Rel) *end = (const void *) (reladdr + relsize);
|
|
ElfW(Addr) l_addr = map->l_addr;
|
|
|
|
#if (!defined DO_RELA || !defined ELF_MACHINE_PLT_REL) && !defined RTLD_BOOTSTRAP
|
|
/* We never bind lazily during ld.so bootstrap. Unfortunately gcc is
|
|
not clever enough to see through all the function calls to realize
|
|
that. */
|
|
if (lazy)
|
|
{
|
|
/* Doing lazy PLT relocations; they need very little info. */
|
|
for (; r < end; ++r)
|
|
elf_machine_lazy_rel (map, l_addr, r);
|
|
}
|
|
else
|
|
#endif
|
|
{
|
|
const ElfW(Sym) *const symtab =
|
|
(const void *) D_PTR (map, l_info[DT_SYMTAB]);
|
|
ElfW(Word) nrelative = (map->l_info[RELCOUNT_IDX] == NULL
|
|
? 0 : map->l_info[RELCOUNT_IDX]->d_un.d_val);
|
|
const ElfW(Rel) *relative = r;
|
|
r = r + MIN (nrelative, relsize / sizeof (ElfW(Rel)));
|
|
|
|
#ifndef RTLD_BOOTSTRAP
|
|
/* This is defined in rtld.c, but nowhere in the static libc.a; make
|
|
the reference weak so static programs can still link. This
|
|
declaration cannot be done when compiling rtld.c (i.e. #ifdef
|
|
RTLD_BOOTSTRAP) because rtld.c contains the common defn for
|
|
_dl_rtld_map, which is incompatible with a weak decl in the same
|
|
file. */
|
|
# ifndef SHARED
|
|
weak_extern (GL(dl_rtld_map));
|
|
# endif
|
|
if (map != &GL(dl_rtld_map)) /* Already done in rtld itself. */
|
|
# if !defined DO_RELA || defined ELF_MACHINE_REL_RELATIVE
|
|
/* Rela platforms get the offset from r_addend and this must
|
|
be copied in the relocation address. Therefore we can skip
|
|
the relative relocations only if this is for rel
|
|
relocations or rela relocations if they are computed as
|
|
memory_loc += l_addr... */
|
|
if (l_addr != 0)
|
|
# else
|
|
/* ...or we know the object has been prelinked. */
|
|
if (l_addr != 0 || ! map->l_info[VALIDX(DT_GNU_PRELINKED)])
|
|
# endif
|
|
#endif
|
|
for (; relative < r; ++relative)
|
|
DO_ELF_MACHINE_REL_RELATIVE (map, l_addr, relative);
|
|
|
|
#ifdef RTLD_BOOTSTRAP
|
|
/* The dynamic linker always uses versioning. */
|
|
assert (map->l_info[VERSYMIDX (DT_VERSYM)] != NULL);
|
|
#else
|
|
if (map->l_info[VERSYMIDX (DT_VERSYM)])
|
|
#endif
|
|
{
|
|
const ElfW(Half) *const version =
|
|
(const void *) D_PTR (map, l_info[VERSYMIDX (DT_VERSYM)]);
|
|
|
|
for (; r < end; ++r)
|
|
{
|
|
ElfW(Half) ndx = version[ELFW(R_SYM) (r->r_info)] & 0x7fff;
|
|
elf_machine_rel (map, r, &symtab[ELFW(R_SYM) (r->r_info)],
|
|
&map->l_versions[ndx],
|
|
(void *) (l_addr + r->r_offset));
|
|
}
|
|
}
|
|
#ifndef RTLD_BOOTSTRAP
|
|
else
|
|
for (; r < end; ++r)
|
|
elf_machine_rel (map, r, &symtab[ELFW(R_SYM) (r->r_info)], NULL,
|
|
(void *) (l_addr + r->r_offset));
|
|
#endif
|
|
}
|
|
}
|
|
|
|
#undef elf_dynamic_do_rel
|
|
#undef Rel
|
|
#undef elf_machine_rel
|
|
#undef elf_machine_rel_relative
|
|
#undef DO_ELF_MACHINE_REL_RELATIVE
|
|
#undef RELCOUNT_IDX
|