newlib/newlib/libc/sys/mmixware/_exit.c

27 lines
817 B
C

/* _exit for MMIXware.
Copyright (C) 2001 Hans-Peter Nilsson.
Permission to use, copy, modify, and distribute this software is freely
granted, provided that this notice is 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)
{
/* Unfortunately, the return status is not returned by Knuth's mmix
simulator, so it seems in effect ineffective. We set it anyway;
there may be a purpose. */
__asm__ ("SET $255,%0\n\tTRAP 0,0,0"
: /* No outputs. */
: "r" (n)
: "memory");
}