1*eb7c1594Sagc/* $NetBSD: fork.S,v 1.5 2003/08/07 16:42:30 agc Exp $ */ 2cf009bccSeeh 3cf009bccSeeh/* 4cf009bccSeeh * Copyright (c) 1992, 1993 5cf009bccSeeh * The Regents of the University of California. All rights reserved. 6cf009bccSeeh * 7cf009bccSeeh * This software was developed by the Computer Systems Engineering group 8cf009bccSeeh * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and 9cf009bccSeeh * contributed to Berkeley. 10cf009bccSeeh * 11cf009bccSeeh * Redistribution and use in source and binary forms, with or without 12cf009bccSeeh * modification, are permitted provided that the following conditions 13cf009bccSeeh * are met: 14cf009bccSeeh * 1. Redistributions of source code must retain the above copyright 15cf009bccSeeh * notice, this list of conditions and the following disclaimer. 16cf009bccSeeh * 2. Redistributions in binary form must reproduce the above copyright 17cf009bccSeeh * notice, this list of conditions and the following disclaimer in the 18cf009bccSeeh * documentation and/or other materials provided with the distribution. 19*eb7c1594Sagc * 3. Neither the name of the University nor the names of its contributors 20cf009bccSeeh * may be used to endorse or promote products derived from this software 21cf009bccSeeh * without specific prior written permission. 22cf009bccSeeh * 23cf009bccSeeh * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 24cf009bccSeeh * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25cf009bccSeeh * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26cf009bccSeeh * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 27cf009bccSeeh * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28cf009bccSeeh * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29cf009bccSeeh * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30cf009bccSeeh * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31cf009bccSeeh * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32cf009bccSeeh * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33cf009bccSeeh * SUCH DAMAGE. 34cf009bccSeeh * 35cf009bccSeeh * from: Header: fork.s,v 1.1 91/07/06 13:05:58 torek Exp 36cf009bccSeeh */ 37cf009bccSeeh 38cf009bccSeeh#include <machine/asm.h> 39cf009bccSeeh#if defined(SYSLIBC_SCCS) && !defined(lint) 40cf009bccSeeh#if 0 41cf009bccSeeh .asciz "@(#)fork.s 8.1 (Berkeley) 6/4/93" 42cf009bccSeeh#else 43*eb7c1594Sagc RCSID("$NetBSD: fork.S,v 1.5 2003/08/07 16:42:30 agc Exp $") 44cf009bccSeeh#endif 45cf009bccSeeh#endif /* SYSLIBC_SCCS and not lint */ 46cf009bccSeeh 47cf009bccSeeh#include "SYS.h" 48cf009bccSeeh 494fb740b8Snathanw_SYSCALL(__fork,fork) 50fb41c872Smycroft dec %o1 /* from 1 to 0 in child, 0 to -1 in parent */ 51cf009bccSeeh retl 52fb41c872Smycroft and %o0, %o1, %o0 /* return 0 in child, pid in parent */ 53