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glibc  2.9
dl-symaddr.c
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00001 /* Get the symbol address.  HPPA version.
00002    Copyright (C) 1999, 2000 Free Software Foundation, Inc.
00003    This file is part of the GNU C Library.
00004 
00005    The GNU C Library is free software; you can redistribute it and/or
00006    modify it under the terms of the GNU Lesser General Public
00007    License as published by the Free Software Foundation; either
00008    version 2.1 of the License, or (at your option) any later version.
00009 
00010    The GNU C Library is distributed in the hope that it will be useful,
00011    but WITHOUT ANY WARRANTY; without even the implied warranty of
00012    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00013    Lesser General Public License for more details.
00014 
00015    You should have received a copy of the GNU Lesser General Public
00016    License along with the GNU C Library; if not, write to the Free
00017    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
00018    02111-1307 USA.  */
00019 
00020 #include <ldsodefs.h>
00021 #include <dl-machine.h>
00022 
00023 void *
00024 _dl_symbol_address (struct link_map *map, const ElfW(Sym) *ref)
00025 {
00026   /* Find the "ip" from the "map" and symbol "ref" */
00027   Elf32_Addr value = (map ? map->l_addr : 0) + ref->st_value;
00028 
00029   /* On hppa, we have to return the pointer to function descriptor.
00030      This involves an "| 2" to inform $$dyncall that this is a plabel32  */
00031   if (ELFW(ST_TYPE) (ref->st_info) == STT_FUNC){
00032     return (void *)((unsigned long)_dl_make_fptr (map, ref, value) | 2);
00033   }
00034   else
00035     return (void *) value;
00036 }