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 #include <kernel-features.h>
  26
  27
  28 ssize_t
  29 __libc_pwrite64 (fd, buf, count, offset)
  30      int fd;
  31      const void *buf;
  32      size_t count;
  33      off64_t offset;
  34 {
  35   ssize_t result;
  36
  37   if (SINGLE_THREAD_P)
  38     {
  39   /* On PPC32 64bit values are aligned in odd/even register pairs.  */
  40       result = INLINE_SYSCALL (pwrite, 6, fd, buf, count,
  41                                0, (long) (offset >> 32),
  42                                (long) offset);
  43
  44       return result;
  45     }
  46
  47   int oldtype = LIBC_CANCEL_ASYNC ();
  48
  49   /* On PPC32 64bit values are aligned in odd/even register pairs.  */
  50   result = INLINE_SYSCALL (pwrite, 6, fd, buf, count,
  51                            0, (long) (offset >> 32),
  52                            (long) offset);
  53
  54   LIBC_CANCEL_RESET (oldtype);
  55
  56   return result;
  57 }
  58
  59 weak_alias (__libc_pwrite64, __pwrite64)
  60 libc_hidden_weak (__pwrite64)
  61 weak_alias (__libc_pwrite64, pwrite64)