sysdeps/unix/sysv/linux/ia64/dl-static.c

   1 /* Variable initialization.  IA-64 version.
   2    Copyright (C) 2001, 2002, 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, write to the Free
  17    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
  18    02111-1307 USA.  */
  19
  20 #include <ldsodefs.h>
  21
  22 #ifdef SHARED
  23
  24 void
  25 _dl_var_init (void *array[])
  26 {
  27   /* It has to match "variables" below. */
  28   enum
  29     {
  30       DL_PAGESIZE = 0,
  31       DL_CLKTCK
  32     };
  33
  34   GLRO(dl_pagesize) = *((size_t *) array[DL_PAGESIZE]);
  35   GLRO(dl_clktck) = *((int *) array[DL_CLKTCK]);
  36 }
  37
  38 #else
  39 #include <bits/libc-lock.h>
  40
  41 __libc_lock_define_initialized_recursive (static, _dl_static_lock)
  42
  43 static void *variables[] =
  44 {
  45   &GLRO(dl_pagesize),
  46   &GLRO(dl_clktck)
  47 };
  48
  49 void
  50 _dl_static_init (struct link_map *map)
  51 {
  52   const ElfW(Sym) *ref = NULL;
  53   lookup_t loadbase;
  54   void (*f) (void *[]);
  55
  56   __libc_lock_lock_recursive (_dl_static_lock);
  57
  58   loadbase = _dl_lookup_symbol_x ("_dl_var_init", map, &ref,
  59                                   map->l_local_scope, NULL, 0, 1, NULL);
  60   if (ref != NULL)
  61     {
  62       f = (void (*) (void *[])) DL_SYMBOL_ADDRESS (loadbase, ref);
  63       f (variables);
  64     }
  65
  66   __libc_lock_unlock_recursive (_dl_static_lock);
  67 }
  68
  69 #endif