1/* $NetBSD: __vfork14.S,v 1.5 2003/08/07 16:42:20 agc Exp $ */ 2 3/*- 4 * Copyright (c) 1990 The Regents of the University of California. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to Berkeley by 8 * William Jolitz. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. Neither the name of the University nor the names of its contributors 19 * may be used to endorse or promote products derived from this software 20 * without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32 * SUCH DAMAGE. 33 * 34 * from: @(#)Ovfork.s 5.1 (Berkeley) 4/23/90 35 */ 36 37#include <machine/asm.h> 38#if defined(SYSLIBC_SCCS) && !defined(lint) 39 RCSID("$NetBSD: __vfork14.S,v 1.5 2003/08/07 16:42:20 agc Exp $") 40#endif /* SYSLIBC_SCCS and not lint */ 41 42#include "SYS.h" 43 44/* 45 * pid = vfork(); 46 * 47 * r1 == 0 in parent process, r1 == 1 in child process. 48 * r0 == pid of child in parent, r0 == pid of parent in child. 49 * 50 */ 51ENTRY(__vfork14) 52 sts pr, r2 /* my rta into r2 */ 53 mov.l LSYS___vfork14, r0 54 trapa #0x80 55 bf err 56 add #0xff, r1 57 and r1, r0 58 jmp @r2 59 nop 60err: 61#ifdef PIC 62 mov r0, r3 63 mova L_GOT, r0 64 mov.l L_GOT, r1 65 add r0, r1 66 mov.l L_errno, r0 67 mov.l @(r0, r1), r1 68 mov.l r3, @r1 69#else 70 mov.l L_errno, r1 71 mov.l r0, @r1 72#endif 73 mov #0xff, r0 74 jmp @r2 75 nop 76 77 .align 2 78LSYS___vfork14: 79 .long SYS___vfork14 80#ifdef PIC 81L_GOT: .long _GLOBAL_OFFSET_TABLE_ 82L_errno: .long _C_LABEL(errno)@GOT 83#else 84L_errno: 85 .long _C_LABEL(errno) 86#endif 87