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memcmp.S revision 1.1 
      1  1.1  joerg /*	$NetBSD: memcmp.S,v 1.1 2011/06/16 16:39:14 joerg 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  joerg 	RCSID("$NetBSD: memcmp.S,v 1.1 2011/06/16 16:39:14 joerg Exp $")
     33  1.1  joerg 
     34  1.1  joerg ENTRY(memcmp)
     35  1.1  joerg 	pushl	%esi
     36  1.1  joerg 	pushl	%edi
     37  1.1  joerg 	movl	12(%esp), %edi
     38  1.1  joerg 	movl	16(%esp), %esi
     39  1.1  joerg 	movl	20(%esp), %ecx
     40  1.1  joerg 	xorl	%eax, %eax
     41  1.1  joerg 	rep
     42  1.1  joerg 	cmpsb
     43  1.1  joerg 	popl	%edi
     44  1.1  joerg 	popl	%esi
     45  1.1  joerg 	ja	1f
     46  1.1  joerg 	setnz %al
     47  1.1  joerg 	ret
     48  1.1  joerg 1:
     49  1.1  joerg 	decl %eax
     50  1.1  joerg 	ret
     51