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pipe.S revision 1.2.12.1 
      1       1.2  christos /*	$NetBSD: pipe.S,v 1.2.12.1 2000/09/29 09:06:46 kleink Exp $	*/
      2       1.2  christos 
      3       1.1       cgd /*
      4       1.1       cgd  * Copyright (c) 1992, 1993
      5       1.1       cgd  *	The Regents of the University of California.  All rights reserved.
      6       1.1       cgd  *
      7       1.1       cgd  * This software was developed by the Computer Systems Engineering group
      8       1.1       cgd  * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
      9       1.1       cgd  * contributed to Berkeley.
     10       1.1       cgd  *
     11       1.1       cgd  * Redistribution and use in source and binary forms, with or without
     12       1.1       cgd  * modification, are permitted provided that the following conditions
     13       1.1       cgd  * are met:
     14       1.1       cgd  * 1. Redistributions of source code must retain the above copyright
     15       1.1       cgd  *    notice, this list of conditions and the following disclaimer.
     16       1.1       cgd  * 2. Redistributions in binary form must reproduce the above copyright
     17       1.1       cgd  *    notice, this list of conditions and the following disclaimer in the
     18       1.1       cgd  *    documentation and/or other materials provided with the distribution.
     19       1.1       cgd  * 3. All advertising materials mentioning features or use of this software
     20       1.1       cgd  *    must display the following acknowledgement:
     21       1.1       cgd  *	This product includes software developed by the University of
     22       1.1       cgd  *	California, Berkeley and its contributors.
     23       1.1       cgd  * 4. Neither the name of the University nor the names of its contributors
     24       1.1       cgd  *    may be used to endorse or promote products derived from this software
     25       1.1       cgd  *    without specific prior written permission.
     26       1.1       cgd  *
     27       1.1       cgd  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     28       1.1       cgd  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     29       1.1       cgd  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     30       1.1       cgd  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     31       1.1       cgd  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     32       1.1       cgd  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     33       1.1       cgd  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     34       1.1       cgd  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     35       1.1       cgd  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     36       1.1       cgd  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     37       1.1       cgd  * SUCH DAMAGE.
     38       1.1       cgd  *
     39       1.1       cgd  * from: Header: pipe.s,v 1.1 91/07/06 13:05:58 torek Exp
     40       1.1       cgd  */
     41       1.1       cgd 
     42       1.2  christos #include <machine/asm.h>
     43       1.2  christos #if defined(SYSLIBC_SCCS) && !defined(lint)
     44       1.2  christos #if 0
     45       1.1       cgd 	.asciz "@(#)pipe.s	8.1 (Berkeley) 6/4/93"
     46       1.2  christos #else
     47       1.2  christos 	RCSID("$NetBSD: pipe.S,v 1.2.12.1 2000/09/29 09:06:46 kleink Exp $")
     48       1.2  christos #endif
     49       1.2  christos #endif /* SYSLIBC_SCCS and not lint */
     50       1.1       cgd 
     51       1.1       cgd #include "SYS.h"
     52       1.1       cgd 
     53  1.2.12.1    kleink #ifdef WEAK_ALIAS
     54  1.2.12.1    kleink WEAK_ALIAS(pipe, _pipe)
     55  1.2.12.1    kleink #endif
     56  1.2.12.1    kleink 
     57  1.2.12.1    kleink ENTRY(_pipe)
     58       1.1       cgd 	mov	%o0, %o2	! save pointer
     59       1.1       cgd 	mov	SYS_pipe, %g1
     60       1.1       cgd 	t	ST_SYSCALL	! pipe()
     61       1.1       cgd 	bcc,a	1f
     62       1.1       cgd 	 st	%o0, [%o2]	! success, store fds
     63       1.1       cgd 	ERROR()
     64       1.1       cgd 1:
     65       1.1       cgd 	st	%o1, [%o2 + 4]
     66       1.1       cgd 	retl			! and return 0
     67       1.1       cgd 	 clr	%o0
     68