ports/sysdeps/unix/sysv/linux/generic/sysdep.h

   1 /* Copyright (C) 2011-2014 Free Software Foundation, Inc.
   2    This file is part of the GNU C Library.
   3    Contributed by Chris Metcalf <cmetcalf@tilera.com>, 2011.
   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 #include <bits/wordsize.h>
  20 #include <kernel-features.h>
  21
  22 /* Provide the common name to allow more code reuse.  */
  23 #define __NR__llseek __NR_llseek
  24
  25 #if __WORDSIZE == 64
  26 /* By defining the older names, glibc will build syscall wrappers for
  27    both pread and pread64; sysdeps/unix/sysv/linux/wordsize-64/pread64.c
  28    will suppress generating any separate code for pread64.c.  */
  29 #define __NR_pread __NR_pread64
  30 #define __NR_pwrite __NR_pwrite64
  31 #endif
  32
  33 /* Provide a dummy argument that can be used to force register
  34    alignment for register pairs if required by the syscall ABI.  */
  35 #ifdef __ASSUME_ALIGNED_REGISTER_PAIRS
  36 #define __ALIGNMENT_ARG 0,
  37 #define __ALIGNMENT_COUNT(a,b) b
  38 #else
  39 #define __ALIGNMENT_ARG
  40 #define __ALIGNMENT_COUNT(a,b) a
  41 #endif