diff options
Diffstat (limited to 'sys/lib/libkern/arch/amd64/byte_swap_2.S')
| -rw-r--r-- | sys/lib/libkern/arch/amd64/byte_swap_2.S | 52 |
1 files changed, 52 insertions, 0 deletions
diff --git a/sys/lib/libkern/arch/amd64/byte_swap_2.S b/sys/lib/libkern/arch/amd64/byte_swap_2.S new file mode 100644 index 00000000000..19ed5e27812 --- /dev/null +++ b/sys/lib/libkern/arch/amd64/byte_swap_2.S @@ -0,0 +1,52 @@ +/* $NetBSD: byte_swap_2.S,v 1.1 2001/06/19 00:22:45 fvdl Exp $ */ + +/*- + * Copyright (c) 1990 The Regents of the University of California. + * All rights reserved. + * + * This code is derived from software contributed to Berkeley by + * William Jolitz. + * + * 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. + * + * from: @(#)htons.s 5.2 (Berkeley) 12/17/90 + */ + +#include <machine/asm.h> +#if defined(LIBC_SCCS) + RCSID("$NetBSD: byte_swap_2.S,v 1.1 2001/06/19 00:22:45 fvdl Exp $") +#endif + +_ENTRY(_C_LABEL(bswap16)) +_ENTRY(_C_LABEL(ntohs)) +_ENTRY(_C_LABEL(htons)) +_PROF_PROLOGUE + movl %edi,%eax + xchgb %ah,%al + ret |