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scanc.S revision 1.6 
      1 /*	$NetBSD: scanc.S,v 1.6 1998/08/15 03:02:49 mycroft Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 1994 Charles M. Hannum.  All rights reserved.
      5  *
      6  * Redistribution and use in source and binary forms, with or without
      7  * modification, are permitted provided that the following conditions
      8  * are met:
      9  * 1. Redistributions of source code must retain the above copyright
     10  *    notice, this list of conditions and the following disclaimer.
     11  * 2. Redistributions in binary form must reproduce the above copyright
     12  *    notice, this list of conditions and the following disclaimer in the
     13  *    documentation and/or other materials provided with the distribution.
     14  * 3. All advertising materials mentioning features or use of this software
     15  *    must display the following acknowledgement:
     16  *	This product includes software developed by Charles M. Hannum.
     17  * 4. The name of the author may not be used to endorse or promote products
     18  *    derived from this software without specific prior written permission.
     19  *
     20  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
     21  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     22  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     23  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
     24  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
     25  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     26  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     27  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     28  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
     29  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     30  */
     31 
     32 #include "DEFS.h"
     33 
     34 ENTRY(scanc)
     35 	movl	4(%esp),%ecx
     36 	testl	%ecx,%ecx
     37 	jz	3f
     38 	pushl	%esi
     39 	pushl	%edi
     40 	movl	16(%esp),%esi
     41 	movl	20(%esp),%edi
     42 	movb	24(%esp),%dl
     43 	xorl	%eax,%eax
     44 	cld
     45 1:
     46 	lodsb
     47 	testb	%dl,(%eax,%edi)
     48 	jnz	2f
     49 	decl	%ecx
     50 	jnz	1b
     51 2:
     52 	popl	%edi
     53 	popl	%esi
     54 3:
     55 	movl	%ecx,%eax
     56 	ret
     57