diff options
Diffstat (limited to 'lib/libc/i386/string/bcopy.S')
-rw-r--r-- | lib/libc/i386/string/bcopy.S | 103 |
1 files changed, 0 insertions, 103 deletions
diff --git a/lib/libc/i386/string/bcopy.S b/lib/libc/i386/string/bcopy.S deleted file mode 100644 index d2a571e..0000000 --- a/lib/libc/i386/string/bcopy.S +++ /dev/null @@ -1,103 +0,0 @@ -/*- - * 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. All advertising materials mentioning features or use of this software - * must display the following acknowledgement: - * This product includes software developed by the University of - * California, Berkeley and its contributors. - * 4. 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> - - RCSID("$NetBSD: bcopy.S,v 1.6 1996/11/12 00:50:06 jtc Exp $") - - /* - * (ov)bcopy (src,dst,cnt) - * ws@tools.de (Wolfgang Solfrank, TooLs GmbH) +49-228-985800 - */ - -#ifdef MEMCOPY -ENTRY(memcpy) -#else -#ifdef MEMMOVE -ENTRY(memmove) -#else -ENTRY(bcopy) -#endif -#endif - pushl %esi - pushl %edi -#if defined(MEMCOPY) || defined(MEMMOVE) - movl 12(%esp),%edi - movl 16(%esp),%esi -#else - movl 12(%esp),%esi - movl 16(%esp),%edi -#endif - movl 20(%esp),%ecx - movl %edi,%eax - subl %esi,%eax - cmpl %ecx,%eax /* overlapping? */ - jb 1f - cld /* nope, copy forwards. */ - shrl $2,%ecx /* copy by words */ - rep - movsl - movl 20(%esp),%ecx - andl $3,%ecx /* any bytes left? */ - rep - movsb -#if defined(MEMCOPY) || defined(MEMMOVE) - movl 12(%esp),%eax -#endif - popl %edi - popl %esi - ret -1: - addl %ecx,%edi /* copy backwards. */ - addl %ecx,%esi - std - andl $3,%ecx /* any fractional bytes? */ - decl %edi - decl %esi - rep - movsb - movl 20(%esp),%ecx /* copy remainder by words */ - shrl $2,%ecx - subl $3,%esi - subl $3,%edi - rep - movsl -#if defined(MEMCOPY) || defined(MEMMOVE) - movl 12(%esp),%eax -#endif - popl %edi - popl %esi - cld - ret |