1*8269e767SBrooks Davis/*- 2*8269e767SBrooks Davis * Copyright (c) 1990 The Regents of the University of California. 3*8269e767SBrooks Davis * All rights reserved. 4*8269e767SBrooks Davis * 5*8269e767SBrooks Davis * This code is derived from software contributed to Berkeley by 6*8269e767SBrooks Davis * William Jolitz. 7*8269e767SBrooks Davis * 8*8269e767SBrooks Davis * Redistribution and use in source and binary forms, with or without 9*8269e767SBrooks Davis * modification, are permitted provided that the following conditions 10*8269e767SBrooks Davis * are met: 11*8269e767SBrooks Davis * 1. Redistributions of source code must retain the above copyright 12*8269e767SBrooks Davis * notice, this list of conditions and the following disclaimer. 13*8269e767SBrooks Davis * 2. Redistributions in binary form must reproduce the above copyright 14*8269e767SBrooks Davis * notice, this list of conditions and the following disclaimer in the 15*8269e767SBrooks Davis * documentation and/or other materials provided with the distribution. 16*8269e767SBrooks Davis * 3. Neither the name of the University nor the names of its contributors 17*8269e767SBrooks Davis * may be used to endorse or promote products derived from this software 18*8269e767SBrooks Davis * without specific prior written permission. 19*8269e767SBrooks Davis * 20*8269e767SBrooks Davis * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 21*8269e767SBrooks Davis * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22*8269e767SBrooks Davis * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23*8269e767SBrooks Davis * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 24*8269e767SBrooks Davis * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 25*8269e767SBrooks Davis * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26*8269e767SBrooks Davis * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27*8269e767SBrooks Davis * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28*8269e767SBrooks Davis * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29*8269e767SBrooks Davis * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30*8269e767SBrooks Davis * SUCH DAMAGE. 31*8269e767SBrooks Davis */ 32*8269e767SBrooks Davis 33*8269e767SBrooks Davis#include <machine/asm.h> 34*8269e767SBrooks Davis#include "SYS.h" 35*8269e767SBrooks Davis 36*8269e767SBrooks Davis WEAK_REFERENCE(__sys_vfork, _vfork) 37*8269e767SBrooks Davis WEAK_REFERENCE(__sys_vfork, vfork) 38*8269e767SBrooks DavisENTRY(__sys_vfork) 39*8269e767SBrooks Davis popq %rsi /* fetch return address (%rsi preserved) */ 40*8269e767SBrooks Davis _SYSCALL(vfork) 41*8269e767SBrooks Davis jb 1f 42*8269e767SBrooks Davis jmp *%rsi 43*8269e767SBrooks Davis1: 44*8269e767SBrooks Davis pushq %rsi 45*8269e767SBrooks Davis jmp HIDENAME(cerror) 46*8269e767SBrooks DavisEND(__sys_vfork) 47*8269e767SBrooks Davis 48*8269e767SBrooks Davis .section .note.GNU-stack,"",%progbits 49