sysdeps/unix/sysv/linux/alpha/sigsuspend.S

   1 /* Copyright (C) 1993,1995,1996,1997,2002,2003 Free Software Foundation, Inc.
   2    This file is part of the GNU C Library.
   3    Contributed by David Mosberger <davidm@cs.arizona.edu>, 1995.
   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 /* sigsuspend is a special syscall since it needs to dereference the
  20    sigset.  This will have to change when we have more than 64 signals.  */
  21
  22 #ifndef NO_CANCELLATION
  23 #include <sysdep.h>
  24
  25 #undef PSEUDO_PREPARE_ARGS
  26 #define PSEUDO_PREPARE_ARGS     ldq     a0, 0(a0);
  27
  28 PSEUDO(__sigsuspend_nocancel, sigsuspend, 1)
  29         ret
  30 /* Use END, not PSEUDO_END, so that we don't issue two $syscall_error
  31    symbols; we'll jump into __sigsuspend for the error case.  */
  32 END(__sigsuspend_nocancel)
  33 #endif /* NO_CANCELLATION */
  34
  35 #include <sysdep-cancel.h>
  36
  37 #undef PSEUDO_PREPARE_ARGS
  38 #define PSEUDO_PREPARE_ARGS     ldq     a0, 0(a0);
  39
  40 PSEUDO(__sigsuspend, sigsuspend, 1)
  41         ret
  42 PSEUDO_END(__sigsuspend)
  43 libc_hidden_def (__sigsuspend)
  44 weak_alias (__sigsuspend, sigsuspend)
  45 strong_alias (__sigsuspend, __libc_sigsuspend)