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/* _exit for MMIXware.

   Copyright (C) 2001 Hans-Peter Nilsson

   Permission to use, copy, modify, and distribute this software is

   freely granted, provided that the above copyright notice, this notice

   and the following disclaimer are preserved with no changes.

   THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR

   IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED

   WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR

   PURPOSE.  */

#include <_ansi.h>

#include <sys/types.h>

#include <sys/stat.h>

#include "sys/syscall.h"

void _exit (int n)

{

  /* The return status is passed on at exit from the simulator by all

     but the oldest versions of Knuth's mmixware simulator.  Beware,

     "TRAP 0,0,0" is the instruction corresponding to (int32_t) 0 and

     the value 0 in $255 is common enough that a program crash jumping

     to e.g. uninitialized memory will look like "exit (0)".  */

  __asm__ ("SET $255,%0\n\tTRAP 0,0,0"

           : /* No outputs.  */

           : "r" (n)

           : "memory");

}