17c478bd9Sstevel@tonic-gate/* 27c478bd9Sstevel@tonic-gate * CDDL HEADER START 37c478bd9Sstevel@tonic-gate * 47c478bd9Sstevel@tonic-gate * The contents of this file are subject to the terms of the 5657b1f3dSraf * Common Development and Distribution License (the "License"). 6657b1f3dSraf * You may not use this file except in compliance with the License. 77c478bd9Sstevel@tonic-gate * 87c478bd9Sstevel@tonic-gate * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 97c478bd9Sstevel@tonic-gate * or http://www.opensolaris.org/os/licensing. 107c478bd9Sstevel@tonic-gate * See the License for the specific language governing permissions 117c478bd9Sstevel@tonic-gate * and limitations under the License. 127c478bd9Sstevel@tonic-gate * 137c478bd9Sstevel@tonic-gate * When distributing Covered Code, include this CDDL HEADER in each 147c478bd9Sstevel@tonic-gate * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 157c478bd9Sstevel@tonic-gate * If applicable, add the following below this CDDL HEADER, with the 167c478bd9Sstevel@tonic-gate * fields enclosed by brackets "[]" replaced with your own identifying 177c478bd9Sstevel@tonic-gate * information: Portions Copyright [yyyy] [name of copyright owner] 187c478bd9Sstevel@tonic-gate * 197c478bd9Sstevel@tonic-gate * CDDL HEADER END 207c478bd9Sstevel@tonic-gate */ 21657b1f3dSraf 227c478bd9Sstevel@tonic-gate/* 23657b1f3dSraf * Copyright 2006 Sun Microsystems, Inc. All rights reserved. 247c478bd9Sstevel@tonic-gate * Use is subject to license terms. 257c478bd9Sstevel@tonic-gate */ 267c478bd9Sstevel@tonic-gate 279a70fc3bSMark J. Nelson .file "forkx.s" 287c478bd9Sstevel@tonic-gate 297c478bd9Sstevel@tonic-gate#include "SYS.h" 307c478bd9Sstevel@tonic-gate 317c478bd9Sstevel@tonic-gate/* 32657b1f3dSraf * pid = __forkx(flags); 33657b1f3dSraf * 34657b1f3dSraf * syscall trap: forksys(0, flags) 357c478bd9Sstevel@tonic-gate * 367c478bd9Sstevel@tonic-gate * From the syscall: 377c478bd9Sstevel@tonic-gate * %edx == 0 in parent process, %edx = 1 in child process. 387c478bd9Sstevel@tonic-gate * %eax == pid of child in parent, %eax == pid of parent in child. 397c478bd9Sstevel@tonic-gate * 407c478bd9Sstevel@tonic-gate * The child gets a zero return value. 417c478bd9Sstevel@tonic-gate * The parent gets the pid of the child. 427c478bd9Sstevel@tonic-gate */ 437c478bd9Sstevel@tonic-gate 44657b1f3dSraf ENTRY(__forkx) 45657b1f3dSraf movl %edi, %esi 46657b1f3dSraf xorl %edi, %edi 47657b1f3dSraf SYSTRAP_2RVALS(forksys) 487c478bd9Sstevel@tonic-gate SYSCERROR 497c478bd9Sstevel@tonic-gate testl %edx, %edx 507c478bd9Sstevel@tonic-gate jz 1f /* jump if parent */ 517c478bd9Sstevel@tonic-gate xorl %eax, %eax /* child, return (0) */ 527c478bd9Sstevel@tonic-gate1: 537c478bd9Sstevel@tonic-gate RET 54657b1f3dSraf SET_SIZE(__forkx) 55