scanc.S revision 1.2 
1/*	$OpenBSD: scanc.S,v 1.2 1996/09/27 06:47:48 mickey Exp $	*/
2/*	$NetBSD: scanc.S,v 1.5 1994/10/26 06:39:13 cgd Exp $	*/
3
4/*
5 * Copyright (c) 1994 Charles Hannum.  All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 *    notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 *    notice, this list of conditions and the following disclaimer in the
14 *    documentation and/or other materials provided with the distribution.
15 * 3. All advertising materials mentioning features or use of this software
16 *    must display the following acknowledgement:
17 *	This product includes software developed by Charles Hannum.
18 * 4. The name of the author may not be used to endorse or promote products
19 *    derived from this software without specific prior written permission.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
22 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
23 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
24 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
25 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
26 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
27 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
28 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
29 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
30 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
31 */
32
33#include "DEFS.h"
34
35ENTRY(scanc)
36	movl	4(%esp),%ecx
37	testl	%ecx,%ecx
38	jz	3f
39	pushl	%esi
40	pushl	%edi
41	movl	16(%esp),%esi
42	movl	20(%esp),%edi
43	movb	24(%esp),%dl
44	xorl	%eax,%eax
45	cld
461:
47	lodsb
48	testb	%dl,(%eax,%edi)
49	jnz	2f
50	decl	%ecx
51	jnz	1b
522:
53	popl	%edi
54	popl	%esi
553:
56	movl	%ecx,%eax
57	ret
58