diff options
Diffstat (limited to 'lib/libc/i386/string/memset.S')
| -rw-r--r-- | lib/libc/i386/string/memset.S | 95 |
1 files changed, 0 insertions, 95 deletions
diff --git a/lib/libc/i386/string/memset.S b/lib/libc/i386/string/memset.S deleted file mode 100644 index 5db1661..0000000 --- a/lib/libc/i386/string/memset.S +++ /dev/null @@ -1,95 +0,0 @@ -/* - * Copyright (c) 1993 Winning Strategies, Inc. - * All rights reserved. - * - * 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 Winning Strategies, Inc. - * 4. The name of the author may not be used to endorse or promote products - * derived from this software without specific prior written permission - * - * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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. - * - * $Id$ - */ - -#if defined(LIBC_RCS) && !defined(lint) - .text - .asciz "$Id$" -#endif /* LIBC_RCS and not lint */ - -#include "DEFS.h" - -/* - * memset(void *b, int c, size_t len) - * write len bytes of value c (converted to an unsigned char) to - * the string b. - * - * Written by: - * J.T. Conklin (jtc@wimsey.com), Winning Strategies, Inc. - */ - -ENTRY(memset) - pushl %edi - pushl %ebx - movl 12(%esp),%edi - movzbl 16(%esp),%eax /* unsigned char, zero extend */ - movl 20(%esp),%ecx - pushl %edi /* push address of buffer */ - - cld /* set fill direction forward */ - - /* - * if the string is too short, it's really not worth the overhead - * of aligning to word boundries, etc. So we jump to a plain - * unaligned set. - */ - cmpl $0x0f,%ecx - jle L1 - - movb %al,%ah /* copy char to all bytes in word */ - movl %eax,%edx - sall $16,%eax - orl %edx,%eax - - movl %edi,%edx /* compute misalignment */ - negl %edx - andl $3,%edx - movl %ecx,%ebx - subl %edx,%ebx - - movl %edx,%ecx /* set until word aligned */ - rep - stosb - - movl %ebx,%ecx - shrl $2,%ecx /* set by words */ - rep - stosl - - movl %ebx,%ecx /* set remainder by bytes */ - andl $3,%ecx -L1: rep - stosb - - popl %eax /* pop address of buffer */ - popl %ebx - popl %edi - ret |
