f420344cef
* elf/dynamic-link.h (elf_get_dynamic_info): Take new argument with load address. Relocate d_ptr in DT_DTRTAB, DT_SYMTAB, DT_RELA, DT_REL, DT_JMPREL, DT_PLTGOT, and DT_VERSYM l_info entry. (_ELF_DYNAMIC_DO_RELOC): Take extra argument which specifies whether rel and rela relocations can both happen and skip one test if this is not possible. (ELF_DYNAMIC_DO_RELA, ELF_DYNAMIC_DO_REL): Call _ELF_DYNAMIC_DO_RELOC appropriately. * elf/dl-addr.c (_dl_addr): DT_SYMTAB and DT_STRTAB entries are already relocated. * elf/dl-deps.c (_dl_map_object_deps): DT_STRTAB entry is already relocated. * elf/dl-load.c (_dl_init_paths): DT_STRTAB entry is already relocated. (_dl_map_object_from_fd): Call elf_get_dynamic_info with new argument. (_dl_map_object): DT_STRTAB entry is already relocated. * elf/dl-lookup.c (do_lookup): DT_STRTAB and DT_SYMTAB entries are already relocated. * elf/dl-reloc.c (_dl_relocate_object): DT_STRTAB entry is already relocated. * elf/dl-runtime.c (fixup): DT_SYMTAB, DT_STRTAB, DT_JMPREL, and DT_VERSYM entries are already relocated. (profile_fixup): Likewise. * elf/dl-version.c: Rename VERSTAG macro into VERSYMIDX. Replace all users. (match_symbol): DT_STRTAB entry is already relocated. (_dl_check_map_versions): Likewise. Also fo DT_VERSYM. * elf/do-rel.h (elf_dynamic_do_rel): reladdr is now assumed to be relocated already. DT_SYMTAB and DT_VERSYM entries are also relocated. * elf/rtld.c (_dl_start): Pass extra argument to elf_get_dynamic_info. (find_needed): DT_STRTAB entry is already relocated. (dl_main): Pass extra argument to elf_get_dynamic_info. DT_STRTAB entry is already relocated. * sysdeps/alpha/dl-machine.h (elf_machine_fixup_plt): DT_JMPREL and DT_PLTGOT entries are already relocated. (elf_machine_rela): Likewise for DT_SYMTAB. * sysdeps/arm/dl-machine.h (elf_machine_rel): DT_STRTAB is already relocated. * sysdeps/i386/dl-machine.h (elf_machine_rel): Likewise. * sysdeps/m68k/dl-machine.h (elf_machine_rela): Likewise. * sysdeps/sparc/sparc32/dl-machine.h (elf_machine_rela): Likewise. * sysdeps/sparc/sparc64/dl-machine.h (elf_machine_rela): Likewise. * sysdeps/powerpc/dl-machine.c (__process_machine_rela): Likewise. * sysdeps/mips/dl-machine.h (elf_machine_got_rel): Likewise. (elf_machine_got_rel): Likewise for DT_SYMTAB and DT_STRTAB. * grp/initgroups.c (initgroups): If function in current module was successful don't stop but continue to process to get all the groups.
93 lines
3.1 KiB
C
93 lines
3.1 KiB
C
/* Locate the shared object symbol nearest a given address.
|
|
Copyright (C) 1996, 1997, 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 <dlfcn.h>
|
|
#include <stddef.h>
|
|
#include <elf/ldsodefs.h>
|
|
|
|
|
|
int
|
|
internal_function
|
|
_dl_addr (const void *address, Dl_info *info)
|
|
{
|
|
const ElfW(Addr) addr = (ElfW(Addr)) address;
|
|
struct link_map *l, *match;
|
|
const ElfW(Sym) *symtab, *matchsym;
|
|
const char *strtab;
|
|
|
|
/* Find the highest-addressed object that ADDRESS is not below. */
|
|
match = NULL;
|
|
for (l = _dl_loaded; l; l = l->l_next)
|
|
if (l->l_addr != 0 /* Make sure we do not currently set this map up
|
|
in this moment. */
|
|
&& addr >= l->l_addr && (!match || match->l_addr < l->l_addr))
|
|
match = l;
|
|
|
|
if (match)
|
|
{
|
|
/* We know ADDRESS lies within MATCH if in any shared object.
|
|
Make sure it isn't past the end of MATCH's segments. */
|
|
size_t n = match->l_phnum;
|
|
if (n > 0)
|
|
{
|
|
do
|
|
--n;
|
|
while (match->l_phdr[n].p_type != PT_LOAD);
|
|
if (addr >= (match->l_addr +
|
|
match->l_phdr[n].p_vaddr + match->l_phdr[n].p_memsz))
|
|
/* Off the end of the highest-addressed shared object. */
|
|
return 0;
|
|
}
|
|
}
|
|
else
|
|
return 0;
|
|
|
|
/* Now we know what object the address lies in. */
|
|
info->dli_fname = match->l_name;
|
|
info->dli_fbase = (void *) match->l_addr;
|
|
|
|
symtab = (const void *) match->l_info[DT_SYMTAB]->d_un.d_ptr;
|
|
strtab = (const void *) match->l_info[DT_STRTAB]->d_un.d_ptr;
|
|
|
|
/* We assume that the string table follows the symbol table, because
|
|
there is no way in ELF to know the size of the dynamic symbol table!! */
|
|
for (matchsym = NULL; (void *) symtab < (void *) strtab; ++symtab)
|
|
if (addr >= match->l_addr + symtab->st_value
|
|
&& (!matchsym
|
|
|| (matchsym->st_value < symtab->st_value
|
|
&& (ELFW(ST_BIND) (symtab->st_info) == STB_GLOBAL
|
|
|| ELFW(ST_BIND) (symtab->st_info) == STB_WEAK))))
|
|
matchsym = symtab;
|
|
|
|
if (matchsym)
|
|
{
|
|
/* We found a symbol close by. Fill in its name and exact address. */
|
|
info->dli_sname = strtab + matchsym->st_name;
|
|
info->dli_saddr = (void *) (match->l_addr + matchsym->st_value);
|
|
}
|
|
else
|
|
{
|
|
/* No symbol matches. We return only the containing object. */
|
|
info->dli_sname = NULL;
|
|
info->dli_saddr = NULL;
|
|
}
|
|
|
|
return 1;
|
|
}
|