1*92d1d441Suebayasi/* $NetBSD: fork.S,v 1.4 2014/05/22 15:01:57 uebayasi Exp $ */ 210f59d7bSfvdl 310f59d7bSfvdl/*- 410f59d7bSfvdl * Copyright (c) 1990 The Regents of the University of California. 510f59d7bSfvdl * All rights reserved. 610f59d7bSfvdl * 710f59d7bSfvdl * This code is derived from software contributed to Berkeley by 810f59d7bSfvdl * William Jolitz. 910f59d7bSfvdl * 1010f59d7bSfvdl * Redistribution and use in source and binary forms, with or without 1110f59d7bSfvdl * modification, are permitted provided that the following conditions 1210f59d7bSfvdl * are met: 1310f59d7bSfvdl * 1. Redistributions of source code must retain the above copyright 1410f59d7bSfvdl * notice, this list of conditions and the following disclaimer. 1510f59d7bSfvdl * 2. Redistributions in binary form must reproduce the above copyright 1610f59d7bSfvdl * notice, this list of conditions and the following disclaimer in the 1710f59d7bSfvdl * documentation and/or other materials provided with the distribution. 18eb7c1594Sagc * 3. Neither the name of the University nor the names of its contributors 1910f59d7bSfvdl * may be used to endorse or promote products derived from this software 2010f59d7bSfvdl * without specific prior written permission. 2110f59d7bSfvdl * 2210f59d7bSfvdl * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 2310f59d7bSfvdl * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 2410f59d7bSfvdl * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 2510f59d7bSfvdl * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 2610f59d7bSfvdl * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 2710f59d7bSfvdl * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 2810f59d7bSfvdl * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 2910f59d7bSfvdl * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 3010f59d7bSfvdl * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 3110f59d7bSfvdl * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 3210f59d7bSfvdl * SUCH DAMAGE. 3310f59d7bSfvdl * 3410f59d7bSfvdl * from: @(#)fork.s 5.1 (Berkeley) 4/23/90 3510f59d7bSfvdl */ 3610f59d7bSfvdl 3710f59d7bSfvdl#include <machine/asm.h> 3810f59d7bSfvdl#if defined(SYSLIBC_SCCS) && !defined(lint) 39*92d1d441Suebayasi RCSID("$NetBSD: fork.S,v 1.4 2014/05/22 15:01:57 uebayasi Exp $") 4010f59d7bSfvdl#endif /* SYSLIBC_SCCS and not lint */ 4110f59d7bSfvdl 4210f59d7bSfvdl#include "SYS.h" 4310f59d7bSfvdl 444fb740b8Snathanw_SYSCALL(__fork,fork) 4510f59d7bSfvdl decl %edx /* from 1 to 0 in child, 0 to -1 in parent */ 4610f59d7bSfvdl andl %edx,%eax 4710f59d7bSfvdl ret /* pid = fork(); */ 48*92d1d441SuebayasiEND(__fork) 49