Home | History | Annotate | Line # | Download | only in small
strcmp.S revision 1.1.2.1 
      1  1.1.2.1   yamt /*	$NetBSD: strcmp.S,v 1.1.2.1 2014/05/22 11:26:29 yamt Exp $	*/
      2      1.1  joerg /*-
      3      1.1  joerg  * Copyright (c) 2011 The NetBSD Foundation, Inc.
      4      1.1  joerg  * All rights reserved.
      5      1.1  joerg  *
      6      1.1  joerg  * This code is derived from software contributed to The NetBSD Foundation
      7      1.1  joerg  * by Joerg Sonnenberger.
      8      1.1  joerg  *
      9      1.1  joerg  * Redistribution and use in source and binary forms, with or without
     10      1.1  joerg  * modification, are permitted provided that the following conditions
     11      1.1  joerg  * are met:
     12      1.1  joerg  * 1. Redistributions of source code must retain the above copyright
     13      1.1  joerg  *    notice, this list of conditions and the following disclaimer.
     14      1.1  joerg  * 2. Redistributions in binary form must reproduce the above copyright
     15      1.1  joerg  *    notice, this list of conditions and the following disclaimer in the
     16      1.1  joerg  *    documentation and/or other materials provided with the distribution.
     17      1.1  joerg  *
     18      1.1  joerg  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     19      1.1  joerg  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     20      1.1  joerg  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     21      1.1  joerg  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     22      1.1  joerg  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     23      1.1  joerg  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     24      1.1  joerg  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     25      1.1  joerg  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     26      1.1  joerg  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     27      1.1  joerg  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     28      1.1  joerg  * POSSIBILITY OF SUCH DAMAGE.
     29      1.1  joerg  */
     30      1.1  joerg 
     31      1.1  joerg #include <machine/asm.h>
     32  1.1.2.1   yamt 	RCSID("$NetBSD: strcmp.S,v 1.1.2.1 2014/05/22 11:26:29 yamt Exp $")
     33      1.1  joerg 
     34      1.1  joerg ENTRY(strcmp)
     35      1.1  joerg 	pushl	%esi
     36      1.1  joerg 	movl    12(%esp), %ecx
     37      1.1  joerg 	movl	8(%esp), %esi
     38      1.1  joerg 	decl	%ecx
     39      1.1  joerg 1:
     40      1.1  joerg 	incl	%ecx
     41      1.1  joerg 	lodsb
     42      1.1  joerg 	cmpb	0(%ecx), %al
     43      1.1  joerg 	jne 2f
     44      1.1  joerg 	testb	%al, %al
     45      1.1  joerg 	jne 1b
     46      1.1  joerg 2:
     47      1.1  joerg 	subb	0(%ecx), %al
     48      1.1  joerg 	movsbl	%al, %eax
     49      1.1  joerg 	popl	%esi
     50      1.1  joerg 	ret
     51  1.1.2.1   yamt END(strcmp)
     52