1*84d9c625SLionel Sambuc/* $NetBSD: strcmp.S,v 1.7 2013/09/07 19:06:29 chs Exp $ */ 2b6cbf720SGianluca Guida 3b6cbf720SGianluca Guida/*- 4b6cbf720SGianluca Guida * Copyright (c) 1997 The NetBSD Foundation, Inc. 5b6cbf720SGianluca Guida * All rights reserved. 6b6cbf720SGianluca Guida * 7b6cbf720SGianluca Guida * This code is derived from software contributed to The NetBSD Foundation 8b6cbf720SGianluca Guida * by Hiroshi Horimoto <horimoto@cs-aoi.cs.sist.ac.jp> and 9b6cbf720SGianluca Guida * by J.T. Conklin <jtc@NetBSD.org>. 10b6cbf720SGianluca Guida * 11b6cbf720SGianluca Guida * Redistribution and use in source and binary forms, with or without 12b6cbf720SGianluca Guida * modification, are permitted provided that the following conditions 13b6cbf720SGianluca Guida * are met: 14b6cbf720SGianluca Guida * 1. Redistributions of source code must retain the above copyright 15b6cbf720SGianluca Guida * notice, this list of conditions and the following disclaimer. 16b6cbf720SGianluca Guida * 2. Redistributions in binary form must reproduce the above copyright 17b6cbf720SGianluca Guida * notice, this list of conditions and the following disclaimer in the 18b6cbf720SGianluca Guida * documentation and/or other materials provided with the distribution. 19b6cbf720SGianluca Guida * 20b6cbf720SGianluca Guida * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 21b6cbf720SGianluca Guida * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 22b6cbf720SGianluca Guida * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 23b6cbf720SGianluca Guida * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 24b6cbf720SGianluca Guida * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 25b6cbf720SGianluca Guida * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 26b6cbf720SGianluca Guida * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 27b6cbf720SGianluca Guida * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 28b6cbf720SGianluca Guida * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 29b6cbf720SGianluca Guida * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 30b6cbf720SGianluca Guida * POSSIBILITY OF SUCH DAMAGE. 31b6cbf720SGianluca Guida */ 32b6cbf720SGianluca Guida 33b6cbf720SGianluca Guida#include <machine/asm.h> 34b6cbf720SGianluca Guida 35b6cbf720SGianluca Guida#if defined(LIBC_SCCS) && !defined(lint) 36*84d9c625SLionel Sambuc RCSID("$NetBSD: strcmp.S,v 1.7 2013/09/07 19:06:29 chs Exp $") 37b6cbf720SGianluca Guida#endif /* LIBC_SCCS and not lint */ 38b6cbf720SGianluca Guida 39*84d9c625SLionel Sambuc#ifdef __mcoldfire__ 40*84d9c625SLionel Sambuc#define GETC(a,b) mvsb a,b 41*84d9c625SLionel Sambuc#define SUBC(a,b) mvsb a,%d0; subl %d0,b 42*84d9c625SLionel Sambuc#else 43*84d9c625SLionel Sambuc#define GETC(a,b) movb a,b 44*84d9c625SLionel Sambuc#define SUBC(a,b) subb a,b 45*84d9c625SLionel Sambuc#endif 46*84d9c625SLionel Sambuc 47b6cbf720SGianluca GuidaENTRY(strcmp) 48*84d9c625SLionel Sambuc movl 4(%sp),%a0 49*84d9c625SLionel Sambuc movl 8(%sp),%a1 50*84d9c625SLionel Sambuc.L1: /* unrolled by 4 for 680[23]0's */ 51*84d9c625SLionel Sambuc GETC((%a0)+,%d1) 52*84d9c625SLionel Sambuc jeq .L2 53*84d9c625SLionel Sambuc SUBC((%a1)+,%d1) 54*84d9c625SLionel Sambuc jne .L3 55b6cbf720SGianluca Guida 56*84d9c625SLionel Sambuc GETC((%a0)+,%d1) 57*84d9c625SLionel Sambuc jeq .L2 58*84d9c625SLionel Sambuc SUBC((%a1)+,%d1) 59*84d9c625SLionel Sambuc jne .L3 60b6cbf720SGianluca Guida 61*84d9c625SLionel Sambuc GETC((%a0)+,%d1) 62*84d9c625SLionel Sambuc jeq .L2 63*84d9c625SLionel Sambuc SUBC((%a1)+,%d1) 64*84d9c625SLionel Sambuc jne .L3 65b6cbf720SGianluca Guida 66*84d9c625SLionel Sambuc GETC((%a0)+,%d1) 67*84d9c625SLionel Sambuc jeq .L2 68*84d9c625SLionel Sambuc SUBC((%a1)+,%d1) 69*84d9c625SLionel Sambuc jeq .L1 70b6cbf720SGianluca Guida 71*84d9c625SLionel Sambuc.L3: 72*84d9c625SLionel Sambuc#ifdef __mcoldfire__ 73*84d9c625SLionel Sambuc movl %d1,%d0 74*84d9c625SLionel Sambuc#else 75*84d9c625SLionel Sambuc scs %d0 76b6cbf720SGianluca Guida EXTBL(%d0) 77b6cbf720SGianluca Guida movb %d1,%d0 78*84d9c625SLionel Sambuc#endif 79b6cbf720SGianluca Guida rts 80b6cbf720SGianluca Guida 81*84d9c625SLionel Sambuc.L2: movq #0,%d0 82*84d9c625SLionel Sambuc movb (%a1),%d0 83b6cbf720SGianluca Guida negl %d0 84b6cbf720SGianluca Guida rts 85*84d9c625SLionel SambucEND(strcmp) 86