sysdeps/unix/sysv/linux/m68k/getpagesize.c

   1 /* Copyright (C) 2000, 2002, 2003, 2004 Free Software Foundation, Inc.
   2    This file is part of the GNU C Library.
   3    Contributed by Andreas Schwab <schwab@suse.de>.
   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 <unistd.h>
  21 #include <sys/param.h>
  22 #include <errno.h>
  23
  24 #include <ldsodefs.h>
  25 #include <sysdep.h>
  26 #include <sys/syscall.h>
  27
  28 /* Return the system page size.  */
  29 int
  30 __getpagesize ()
  31 {
  32 #ifdef __NR_getpagesize
  33   int result;
  34 #endif
  35
  36   if (GLRO(dl_pagesize) != 0)
  37     return GLRO(dl_pagesize);
  38
  39 #ifdef __NR_getpagesize
  40   INTERNAL_SYSCALL_DECL (err);
  41   result = INTERNAL_SYSCALL (getpagesize, err, 0);
  42   /* The only possible error is ENOSYS.  */
  43   if (!INTERNAL_SYSCALL_ERROR_P (result, err))
  44     return result;
  45 #endif
  46
  47   return 4096;
  48 }
  49 libc_hidden_def (__getpagesize)
  50 weak_alias (__getpagesize, getpagesize)