sysdeps/ia64/dl-lookupcfg.h

   1 /* Configuration of lookup functions.
   2    Copyright (C) 2000, 2001, 2003, 2004 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, see
  17    <http://www.gnu.org/licenses/>.  */
  18
  19 #define ELF_FUNCTION_PTR_IS_SPECIAL
  20 #define DL_UNMAP_IS_SPECIAL
  21
  22 #include <dl-fptr.h>
  23
  24 /* We do not support copy relocations for IA-64.  */
  25 #define DL_NO_COPY_RELOCS
  26
  27 /* Forward declaration.  */
  28 struct link_map;
  29
  30 extern void *_dl_symbol_address (struct link_map *map, const Elf64_Sym *ref);
  31
  32 #define DL_SYMBOL_ADDRESS(map, ref) _dl_symbol_address(map, ref)
  33
  34 extern Elf64_Addr _dl_lookup_address (const void *address);
  35
  36 #define DL_LOOKUP_ADDRESS(addr) _dl_lookup_address (addr)
  37
  38 extern void _dl_unmap (struct link_map *map);
  39
  40 #define DL_UNMAP(map) _dl_unmap (map)
  41
  42 #define DL_AUTO_FUNCTION_ADDRESS(map, addr)             \
  43 ({                                                      \
  44   unsigned long int fptr[2];                            \
  45   fptr[0] = (unsigned long int) (addr);                 \
  46   fptr[1] = (map)->l_info[DT_PLTGOT]->d_un.d_ptr;       \
  47   (Elf64_Addr) fptr;                                    \
  48 })
  49
  50 #define DL_STATIC_FUNCTION_ADDRESS(map, addr)           \
  51 ({                                                      \
  52   static unsigned long int fptr[2];                     \
  53   fptr[0] = (unsigned long int) (addr);                 \
  54   fptr[1] = (map)->l_info[DT_PLTGOT]->d_un.d_ptr;       \
  55   (Elf64_Addr) fptr;                                    \
  56 })
  57
  58 #define DL_DT_INIT_ADDRESS(map, addr) DL_AUTO_FUNCTION_ADDRESS (map, addr)
  59 #define DL_DT_FINI_ADDRESS(map, addr) DL_AUTO_FUNCTION_ADDRESS (map, addr)
  60 /* The type of the return value of fixup/profile_fixup.  */
  61 #define DL_FIXUP_VALUE_TYPE struct fdesc
  62 /* Construct a value of type DL_FIXUP_VALUE_TYPE from a code address
  63    and a link map.  */
  64 #define DL_FIXUP_MAKE_VALUE(map, addr) \
  65   ((struct fdesc) { (addr), (map)->l_info[DT_PLTGOT]->d_un.d_ptr })
  66 /* Extract the code address from a value of type DL_FIXUP_MAKE_VALUE.
  67  */
  68 #define DL_FIXUP_VALUE_CODE_ADDR(value) (value).ip
  69
  70 #define DL_FIXUP_VALUE_ADDR(value) ((uintptr_t) &(value))
  71 #define DL_FIXUP_ADDR_VALUE(addr) (*(struct fdesc *) (addr))