Home | History | Annotate | Line # | Download | only in sys
pipe.S revision 1.4 
      1  1.4      agc /*	$NetBSD: pipe.S,v 1.4 2003/08/07 16:42:30 agc Exp $	*/
      2  1.1      eeh 
      3  1.1      eeh /*
      4  1.1      eeh  * Copyright (c) 1992, 1993
      5  1.1      eeh  *	The Regents of the University of California.  All rights reserved.
      6  1.1      eeh  *
      7  1.1      eeh  * This software was developed by the Computer Systems Engineering group
      8  1.1      eeh  * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
      9  1.1      eeh  * contributed to Berkeley.
     10  1.1      eeh  *
     11  1.1      eeh  * Redistribution and use in source and binary forms, with or without
     12  1.1      eeh  * modification, are permitted provided that the following conditions
     13  1.1      eeh  * are met:
     14  1.1      eeh  * 1. Redistributions of source code must retain the above copyright
     15  1.1      eeh  *    notice, this list of conditions and the following disclaimer.
     16  1.1      eeh  * 2. Redistributions in binary form must reproduce the above copyright
     17  1.1      eeh  *    notice, this list of conditions and the following disclaimer in the
     18  1.1      eeh  *    documentation and/or other materials provided with the distribution.
     19  1.4      agc  * 3. Neither the name of the University nor the names of its contributors
     20  1.1      eeh  *    may be used to endorse or promote products derived from this software
     21  1.1      eeh  *    without specific prior written permission.
     22  1.1      eeh  *
     23  1.1      eeh  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     24  1.1      eeh  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     25  1.1      eeh  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     26  1.1      eeh  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     27  1.1      eeh  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     28  1.1      eeh  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     29  1.1      eeh  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     30  1.1      eeh  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     31  1.1      eeh  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     32  1.1      eeh  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     33  1.1      eeh  * SUCH DAMAGE.
     34  1.1      eeh  *
     35  1.1      eeh  * from: Header: pipe.s,v 1.1 91/07/06 13:05:58 torek Exp
     36  1.1      eeh  */
     37  1.1      eeh 
     38  1.1      eeh #include <machine/asm.h>
     39  1.1      eeh #if defined(SYSLIBC_SCCS) && !defined(lint)
     40  1.1      eeh #if 0
     41  1.1      eeh 	.asciz "@(#)pipe.s	8.1 (Berkeley) 6/4/93"
     42  1.1      eeh #else
     43  1.4      agc 	RCSID("$NetBSD: pipe.S,v 1.4 2003/08/07 16:42:30 agc Exp $")
     44  1.1      eeh #endif
     45  1.1      eeh #endif /* SYSLIBC_SCCS and not lint */
     46  1.1      eeh 
     47  1.1      eeh #include "SYS.h"
     48  1.1      eeh 
     49  1.3   kleink #ifdef WEAK_ALIAS
     50  1.3   kleink WEAK_ALIAS(pipe, _pipe)
     51  1.3   kleink #endif
     52  1.3   kleink 
     53  1.3   kleink ENTRY(_pipe)
     54  1.2  mycroft 	mov	%o0, %o2	/* save pointer */
     55  1.1      eeh 	mov	SYS_pipe, %g1
     56  1.2  mycroft 	t	ST_SYSCALL	/* pipe() */
     57  1.1      eeh 	bcc,a	1f
     58  1.2  mycroft 	 st	%o0, [%o2]	/* success, store fds */
     59  1.1      eeh 	ERROR()
     60  1.1      eeh 1:
     61  1.1      eeh 	st	%o1, [%o2 + 4]
     62  1.2  mycroft 	retl			/* and return 0 */
     63  1.1      eeh 	 clr	%o0
     64