sysdeps/unix/sysv/linux/powerpc/powerpc32/pwrite64.c

   1 /* Copyright (C) 1997-2014 Free Software Foundation, Inc.
   2    This file is part of the GNU C Library.
   3    Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997.
   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 <errno.h>
  20 #include <unistd.h>
  21
  22 #include <sysdep-cancel.h>
  23 #include <sys/syscall.h>
  24
  25
  26 ssize_t
  27 __libc_pwrite64 (fd, buf, count, offset)
  28      int fd;
  29      const void *buf;
  30      size_t count;
  31      off64_t offset;
  32 {
  33   ssize_t result;
  34
  35   if (SINGLE_THREAD_P)
  36     {
  37   /* On PPC32 64bit values are aligned in odd/even register pairs.  */
  38       result = INLINE_SYSCALL (pwrite, 6, fd, buf, count,
  39                                0, (long) (offset >> 32),
  40                                (long) offset);
  41
  42       return result;
  43     }
  44
  45   int oldtype = LIBC_CANCEL_ASYNC ();
  46
  47   /* On PPC32 64bit values are aligned in odd/even register pairs.  */
  48   result = INLINE_SYSCALL (pwrite, 6, fd, buf, count,
  49                            0, (long) (offset >> 32),
  50                            (long) offset);
  51
  52   LIBC_CANCEL_RESET (oldtype);
  53
  54   return result;
  55 }
  56
  57 weak_alias (__libc_pwrite64, __pwrite64)
  58 libc_hidden_weak (__pwrite64)
  59 weak_alias (__libc_pwrite64, pwrite64)