diff options
Diffstat (limited to 'lib/libc/arch/i386/string/memcpy.S')
| -rw-r--r-- | lib/libc/arch/i386/string/memcpy.S | 63 |
1 files changed, 1 insertions, 62 deletions
diff --git a/lib/libc/arch/i386/string/memcpy.S b/lib/libc/arch/i386/string/memcpy.S index 9c846004e67..c9361568da4 100644 --- a/lib/libc/arch/i386/string/memcpy.S +++ b/lib/libc/arch/i386/string/memcpy.S @@ -1,62 +1 @@ -/* $OpenBSD: memcpy.S,v 1.4 2014/11/30 19:43:56 deraadt Exp $ */ - -/*- - * Copyright (c) 1990 The Regents of the University of California. - * All rights reserved. - * - * This code is derived from locore.s. - * - * 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. Neither the name of the University 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 REGENTS 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 REGENTS 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. - */ - -#include <machine/asm.h> - -/* - * memcpy(src, dst, cnt) - * ws@tools.de (Wolfgang Solfrank, TooLs GmbH) +49-228-985800 - */ - -ENTRY(memcpy) - pushl %esi - pushl %edi - - movl 12(%esp),%edi - movl 16(%esp),%esi - movl %edi, %eax - - movl 20(%esp),%ecx - movl %ecx,%edx - - cld /* nope, copy forwards. */ - shrl $2,%ecx /* copy by words */ - rep - movsl - movl %edx,%ecx - andl $3,%ecx /* any bytes left? */ - rep - movsb - popl %edi - popl %esi - ret +/* This code is contained in memmove.S */ |