sysdeps/ia64/dl-lookupcfg.h

   1 /* Configuration of lookup functions.
   2    Copyright (C) 2000, 2001, 2003 Free Software Foundation, Inc.
   3    This file is part of the GNU C Library.
   4
   5    The GNU C Library is free software; you can redistribute it and/or
   6    modify it under the terms of the GNU Lesser General Public
   7    License as published by the Free Software Foundation; either
   8    version 2.1 of the License, or (at your option) any later version.
   9
  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    Lesser General Public License for more details.
  14
  15    You should have received a copy of the GNU Lesser General Public
  16    License along with the GNU C Library; if not, write to the Free
  17    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
  18    02111-1307 USA.  */
  19
  20 /* The ia64 need more information from the symbol lookup function
  21    than just the address. */
  22 #define DL_LOOKUP_RETURNS_MAP
  23 #define ELF_FUNCTION_PTR_IS_SPECIAL
  24 #define DL_UNMAP_IS_SPECIAL
  25
  26 /* We do not support copy relocations for IA-64.  */
  27 #define DL_NO_COPY_RELOCS
  28
  29 /* Forward declaration.  */
  30 struct link_map;
  31
  32 extern void *_dl_symbol_address (struct link_map *map, const Elf64_Sym *ref);
  33
  34 #define DL_SYMBOL_ADDRESS(map, ref) _dl_symbol_address(map, ref)
  35
  36 extern Elf64_Addr _dl_lookup_address (const void *address);
  37
  38 #define DL_LOOKUP_ADDRESS(addr) _dl_lookup_address (addr)
  39
  40 extern void _dl_unmap (struct link_map *map);
  41
  42 #define DL_UNMAP(map) _dl_unmap (map)
  43
  44 #define DL_AUTO_FUNCTION_ADDRESS(map, addr)             \
  45 ({                                                      \
  46   unsigned long int fptr[2];                            \
  47   fptr[0] = (unsigned long int) (addr);                 \
  48   fptr[1] = (map)->l_info[DT_PLTGOT]->d_un.d_ptr;       \
  49   (Elf64_Addr) fptr;                                    \
  50 })
  51
  52 #define DL_STATIC_FUNCTION_ADDRESS(map, addr)           \
  53 ({                                                      \
  54   static unsigned long int fptr[2];                     \
  55   fptr[0] = (unsigned long int) (addr);                 \
  56   fptr[1] = (map)->l_info[DT_PLTGOT]->d_un.d_ptr;       \
  57   (Elf64_Addr) fptr;                                    \
  58 })
  59
  60 #define DL_DT_INIT_ADDRESS(map, addr) DL_AUTO_FUNCTION_ADDRESS (map, addr)
  61 #define DL_DT_FINI_ADDRESS(map, addr) DL_AUTO_FUNCTION_ADDRESS (map, addr)