sysdeps/standalone/i960/nindy960/_exit.c

   1 /* Copyright (C) 1991, 1997, 1999 Free Software Foundation, Inc.
   2    This file is part of the GNU C Library.
   3    Contributed by Joel Sherrill (jsherril@redstone-emh2.army.mil),
   4      On-Line Applications Research Corporation.
   5
   6    The GNU C Library is free software; you can redistribute it and/or
   7    modify it under the terms of the GNU Lesser General Public
   8    License as published by the Free Software Foundation; either
   9    version 2.1 of the License, or (at your option) any later version.
  10
  11    The GNU C Library is distributed in the hope that it will be useful,
  12    but WITHOUT ANY WARRANTY; without even the implied warranty of
  13    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14    Lesser General Public License for more details.
  15
  16    You should have received a copy of the GNU Lesser General Public
  17    License along with the GNU C Library; if not, write to the Free
  18    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
  19    02111-1307 USA.  */
  20
  21 #include <unistd.h>
  22 #include <stdlib.h>
  23
  24 /* The function `_exit' should take a status argument and simply
  25    terminate program execution, using the low-order 8 bits of the
  26    given integer as status.  */
  27
  28 /* This returns control to Nindy.  */
  29 /* XXX where is __NORETURN ? */
  30 __NORETURN void
  31 _exit (status)
  32      int status;
  33 {
  34   /* status is ignored */
  35
  36   asm volatile( "mov   0,g0; \
  37                  fmark ; \
  38            syncf ; \
  39            .word    0xfeedface ; \
  40                  bx       start" : : );
  41  /*  The constant 0xfeedface is a magic word for break which
  42   *  is defined by NINDY.  The branch extended restarts the
  43   *  application if the user types "go".
  44   */
  45 }
  46 weak_alias (_exit, _Exit)
  47
  48
  49 #ifdef   HAVE_GNU_LD
  50
  51 #include <gnu-stabs.h>
  52
  53 stub_warning(_exit);
  54
  55 #endif  /* GNU stabs.  */