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
35 ENTRY(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
46 1:
47 lodsb
48 testb %dl,(%eax,%edi)
49 jnz 2f
50 decl %ecx
51 jnz 1b
52 2:
53 popl %edi
54 popl %esi
55 3:
56 movl %ecx,%eax
57 ret