1*0a6a1f1dSLionel Sambuc/* $NetBSD: __vfork14.S,v 1.2 2015/03/27 06:44:28 matt Exp $ */ 2*0a6a1f1dSLionel Sambuc 3*0a6a1f1dSLionel Sambuc/*- 4*0a6a1f1dSLionel Sambuc * Copyright (c) 1991, 1993 5*0a6a1f1dSLionel Sambuc * The Regents of the University of California. All rights reserved. 6*0a6a1f1dSLionel Sambuc * 7*0a6a1f1dSLionel Sambuc * This code is derived from software contributed to Berkeley by 8*0a6a1f1dSLionel Sambuc * Ralph Campbell. 9*0a6a1f1dSLionel Sambuc * 10*0a6a1f1dSLionel Sambuc * Redistribution and use in source and binary forms, with or without 11*0a6a1f1dSLionel Sambuc * modification, are permitted provided that the following conditions 12*0a6a1f1dSLionel Sambuc * are met: 13*0a6a1f1dSLionel Sambuc * 1. Redistributions of source code must retain the above copyright 14*0a6a1f1dSLionel Sambuc * notice, this list of conditions and the following disclaimer. 15*0a6a1f1dSLionel Sambuc * 2. Redistributions in binary form must reproduce the above copyright 16*0a6a1f1dSLionel Sambuc * notice, this list of conditions and the following disclaimer in the 17*0a6a1f1dSLionel Sambuc * documentation and/or other materials provided with the distribution. 18*0a6a1f1dSLionel Sambuc * 3. Neither the name of the University nor the names of its contributors 19*0a6a1f1dSLionel Sambuc * may be used to endorse or promote products derived from this software 20*0a6a1f1dSLionel Sambuc * without specific prior written permission. 21*0a6a1f1dSLionel Sambuc * 22*0a6a1f1dSLionel Sambuc * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 23*0a6a1f1dSLionel Sambuc * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 24*0a6a1f1dSLionel Sambuc * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25*0a6a1f1dSLionel Sambuc * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 26*0a6a1f1dSLionel Sambuc * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 27*0a6a1f1dSLionel Sambuc * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 28*0a6a1f1dSLionel Sambuc * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29*0a6a1f1dSLionel Sambuc * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30*0a6a1f1dSLionel Sambuc * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31*0a6a1f1dSLionel Sambuc * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32*0a6a1f1dSLionel Sambuc * SUCH DAMAGE. 33*0a6a1f1dSLionel Sambuc */ 34*0a6a1f1dSLionel Sambuc 35*0a6a1f1dSLionel Sambuc#include "SYS.h" 36*0a6a1f1dSLionel Sambuc 37*0a6a1f1dSLionel Sambuc#if defined(LIBC_SCCS) && !defined(lint) 38*0a6a1f1dSLionel Sambuc#if 0 39*0a6a1f1dSLionel Sambuc RCSID("from: @(#)Ovfork.s 8.1 (Berkeley) 6/4/93") 40*0a6a1f1dSLionel Sambuc#else 41*0a6a1f1dSLionel Sambuc RCSID("$NetBSD: __vfork14.S,v 1.2 2015/03/27 06:44:28 matt Exp $") 42*0a6a1f1dSLionel Sambuc#endif 43*0a6a1f1dSLionel Sambuc#endif /* LIBC_SCCS and not lint */ 44*0a6a1f1dSLionel Sambuc 45*0a6a1f1dSLionel Sambuc/* 46*0a6a1f1dSLionel Sambuc * pid = vfork(); 47*0a6a1f1dSLionel Sambuc * 48*0a6a1f1dSLionel Sambuc * a1 == 0 in parent process, a1 == 1 in child process. 49*0a6a1f1dSLionel Sambuc * a0 == pid of child in parent, a0 == pid of parent in child. 50*0a6a1f1dSLionel Sambuc */ 51*0a6a1f1dSLionel Sambuc 52*0a6a1f1dSLionel SambucENTRY(__vfork14) 53*0a6a1f1dSLionel Sambuc SYSTRAP(__vfork14) 54*0a6a1f1dSLionel Sambuc JUMP_TO_CERROR() /* error */ 55*0a6a1f1dSLionel Sambuc addi a1, a1, -1 /* success */ 56*0a6a1f1dSLionel Sambuc and a0, a0, a1 57*0a6a1f1dSLionel Sambuc ret 58*0a6a1f1dSLionel SambucEND(__vfork14) 59