scanc.S revision 1.8
1 1.8 drochner /* $NetBSD: scanc.S,v 1.8 1999/09/10 15:39:04 drochner Exp $ */ 2 1.5 cgd 3 1.7 mycroft /*- 4 1.7 mycroft * Copyright (c) 1998 The NetBSD Foundation, Inc. 5 1.7 mycroft * All rights reserved. 6 1.7 mycroft * 7 1.7 mycroft * This code is derived from software contributed to The NetBSD Foundation 8 1.7 mycroft * by Charles M. Hannum. 9 1.1 mycroft * 10 1.1 mycroft * Redistribution and use in source and binary forms, with or without 11 1.1 mycroft * modification, are permitted provided that the following conditions 12 1.1 mycroft * are met: 13 1.1 mycroft * 1. Redistributions of source code must retain the above copyright 14 1.1 mycroft * notice, this list of conditions and the following disclaimer. 15 1.1 mycroft * 2. Redistributions in binary form must reproduce the above copyright 16 1.1 mycroft * notice, this list of conditions and the following disclaimer in the 17 1.1 mycroft * documentation and/or other materials provided with the distribution. 18 1.1 mycroft * 3. All advertising materials mentioning features or use of this software 19 1.1 mycroft * must display the following acknowledgement: 20 1.7 mycroft * This product includes software developed by the NetBSD 21 1.7 mycroft * Foundation, Inc. and its contributors. 22 1.7 mycroft * 4. Neither the name of The NetBSD Foundation nor the names of its 23 1.7 mycroft * contributors may be used to endorse or promote products derived 24 1.7 mycroft * from this software without specific prior written permission. 25 1.1 mycroft * 26 1.7 mycroft * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 27 1.7 mycroft * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 28 1.7 mycroft * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 29 1.7 mycroft * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 30 1.7 mycroft * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 31 1.7 mycroft * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 32 1.7 mycroft * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 33 1.7 mycroft * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 34 1.7 mycroft * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 35 1.7 mycroft * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 36 1.7 mycroft * POSSIBILITY OF SUCH DAMAGE. 37 1.1 mycroft */ 38 1.1 mycroft 39 1.8 drochner #include <machine/asm.h> 40 1.1 mycroft 41 1.1 mycroft ENTRY(scanc) 42 1.1 mycroft movl 4(%esp),%ecx 43 1.1 mycroft testl %ecx,%ecx 44 1.1 mycroft jz 3f 45 1.1 mycroft pushl %esi 46 1.2 mycroft pushl %edi 47 1.1 mycroft movl 16(%esp),%esi 48 1.2 mycroft movl 20(%esp),%edi 49 1.1 mycroft movb 24(%esp),%dl 50 1.2 mycroft xorl %eax,%eax 51 1.1 mycroft cld 52 1.1 mycroft 1: 53 1.1 mycroft lodsb 54 1.2 mycroft testb %dl,(%eax,%edi) 55 1.4 mycroft jnz 2f 56 1.4 mycroft decl %ecx 57 1.4 mycroft jnz 1b 58 1.1 mycroft 2: 59 1.2 mycroft popl %edi 60 1.1 mycroft popl %esi 61 1.1 mycroft 3: 62 1.1 mycroft movl %ecx,%eax 63 1.1 mycroft ret 64
Indexes created Wed Sep 24 05:09:52 GMT 2025