/* Copyright (C) 2008  Emmanuel Varoquaux

   This file is part of XOS.

   This program is free software: you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation, either version 3 of the License, or
   (at your option) any later version.

   This program is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.

   You should have received a copy of the GNU General Public License
   along with this program.  If not, see <http://www.gnu.org/licenses/>. */

#include <stdio.h>
#include <errno.h>

int main()
{
  int retval;

  asm volatile("int $0x80"
               : "=a" (retval)
               : "0" (1981));
  errno = retval < 0 ? -retval : 0;
  perror(NULL);

  asm volatile("int $0x80"
               : "=a" (retval)
               : "0" (0));
  errno = retval < 0 ? -retval : 0;
  perror(NULL);

  asm volatile("int $0x80"
               : "=a" (retval)
               : "0" (30));
  errno = retval < 0 ? -retval : 0;
  perror(NULL);

  return 0;
}