From ee4435bcd6f94b7463cbd7e960e84ddf03965272 Mon Sep 17 00:00:00 2001 From: Eric Andersen Date: Thu, 20 Nov 2003 15:23:03 +0000 Subject: Add an initial set of arm optimized string functions. These do seem to make noticable speed improvement... -Erik --- libc/string/arm/memcpy.S | 48 ++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 48 insertions(+) create mode 100644 libc/string/arm/memcpy.S (limited to 'libc/string/arm/memcpy.S') diff --git a/libc/string/arm/memcpy.S b/libc/string/arm/memcpy.S new file mode 100644 index 000000000..cc9a43cb4 --- /dev/null +++ b/libc/string/arm/memcpy.S @@ -0,0 +1,48 @@ +/*- + * Copyright (c) 1997 The NetBSD Foundation, Inc. + * All rights reserved. + * + * This code is derived from software contributed to The NetBSD Foundation + * by Neil A. Carson and Mark Brinicombe + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the NetBSD + * Foundation, Inc. and its contributors. + * 4. Neither the name of The NetBSD Foundation nor the names of its + * contributors may be used to endorse or promote products derived + * from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS + * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED + * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR + * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS + * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + * + * Adapted for uClibc from NetBSD memcpy.S,v 1.3 2003/04/05 + * by Erik Andersen + */ + + .text + .global memcpy; + .type memcpy,%function + .align 4; \ + +memcpy: + stmfd sp!, {r0, lr} + bl _memcpy (PLT) + ldmfd sp!, {r0, pc} -- cgit v1.2.3