diff options
Diffstat (limited to 'newlib/libc/sys/linux/dl/dl-addr.c')
| -rw-r--r-- | newlib/libc/sys/linux/dl/dl-addr.c | 101 |
1 files changed, 0 insertions, 101 deletions
diff --git a/newlib/libc/sys/linux/dl/dl-addr.c b/newlib/libc/sys/linux/dl/dl-addr.c deleted file mode 100644 index 23867491f..000000000 --- a/newlib/libc/sys/linux/dl/dl-addr.c +++ /dev/null @@ -1,101 +0,0 @@ -/* Locate the shared object symbol nearest a given address. - Copyright (C) 1996-2000, 2001 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. */ - -#include <dlfcn.h> -#include <stddef.h> -#include <ldsodefs.h> - -int -internal_function -_dl_addr (const void *address, Dl_info *info) -{ - const ElfW(Addr) addr = DL_LOOKUP_ADDRESS (address); - struct link_map *l, *match; - const ElfW(Sym) *symtab, *matchsym; - const char *strtab; - ElfW(Word) strtabsize; - - /* Find the highest-addressed object that ADDRESS is not below. */ - match = NULL; - for (l = _dl_loaded; l; l = l->l_next) - if (addr >= l->l_map_start && addr < l->l_map_end) - { - /* We know ADDRESS lies within L if in any shared object. - Make sure it isn't past the end of L's segments. */ - size_t n = l->l_phnum; - if (n > 0) - { - do - --n; - while (l->l_phdr[n].p_type != PT_LOAD); - if (addr >= (l->l_addr + - l->l_phdr[n].p_vaddr + l->l_phdr[n].p_memsz)) - /* Off the end of the highest-addressed shared object. */ - continue; - } - - match = l; - break; - } - - if (match == NULL) - return 0; - - /* Now we know what object the address lies in. */ - info->dli_fname = match->l_name; - info->dli_fbase = (void *) match->l_addr; - - /* If this is the main program the information is incomplete. */ - if (__builtin_expect (info->dli_fbase == NULL, 0)) - { - info->dli_fname = _dl_argv[0]; - info->dli_fbase = (void *) match->l_map_start; - } - - symtab = (const void *) D_PTR (match, l_info[DT_SYMTAB]); - strtab = (const void *) D_PTR (match, l_info[DT_STRTAB]); - strtabsize = match->l_info[DT_STRSZ]->d_un.d_val; - - /* 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 - && ((symtab->st_size == 0 && addr == match->l_addr + symtab->st_value) - || addr < match->l_addr + symtab->st_value + symtab->st_size) - && symtab->st_name < strtabsize - && (matchsym == NULL || 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; -} |