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      1 /*
      2  * CDDL HEADER START
      3  *
      4  * The contents of this file are subject to the terms of the
      5  * Common Development and Distribution License (the "License").
      6  * You may not use this file except in compliance with the License.
      7  *
      8  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
      9  * or http://www.opensolaris.org/os/licensing.
     10  * See the License for the specific language governing permissions
     11  * and limitations under the License.
     12  *
     13  * When distributing Covered Code, include this CDDL HEADER in each
     14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
     15  * If applicable, add the following below this CDDL HEADER, with the
     16  * fields enclosed by brackets "[]" replaced with your own identifying
     17  * information: Portions Copyright [yyyy] [name of copyright owner]
     18  *
     19  * CDDL HEADER END
     20  */
     21 
     22 /*	Copyright (c) 1988 AT&T	*/
     23 /*	  All Rights Reserved	*/
     24 
     25 /*
     26  * Copyright 2006 Sun Microsystems, Inc.  All rights reserved.
     27  * Use is subject to license terms.
     28  */
     29 
     30 	.file	"forkx.s"
     31 
     32 #include "SYS.h"
     33 
     34 /*
     35  * pid = __forkx(flags);
     36  *
     37  * syscall trap: forksys(0, flags)
     38  *
     39  * From the syscall:
     40  * %o1 == 0 in parent process, %o1 == 1 in child process.
     41  * %o0 == pid of child in parent, %o0 == pid of parent in child.
     42  *
     43  * The child gets a zero return value.
     44  * The parent gets the pid of the child.
     45  */
     46 
     47 	ENTRY(__forkx)
     48 	mov	%o0, %o1
     49 	clr	%o0
     50 	SYSTRAP_2RVALS(forksys)
     51 	SYSCERROR
     52 	movrnz	%o1, 0, %o0
     53 	RET
     54 	SET_SIZE(__forkx)
     55