1/* $FreeBSD$ */
2/*	$NetBSD: byte_swap_2.S,v 1.2 1996/10/17 03:08:08 cgd Exp $	*/
3
4/*-
5 * Copyright (c) 1996 Carnegie-Mellon University.
6 * All rights reserved.
7 *
8 * Author: Chris G. Demetriou
9 *
10 * Permission to use, copy, modify and distribute this software and
11 * its documentation is hereby granted, provided that both the copyright
12 * notice and this permission notice appear in all copies of the
13 * software, derivative works or modified versions, and any portions
14 * thereof, and that both notices appear in supporting documentation.
15 *
16 * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
17 * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND
18 * FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
19 *
20 * Carnegie Mellon requests users of this software to return to
21 *
22 *  Software Distribution Coordinator  or  Software.Distribution@CS.CMU.EDU
23 *  School of Computer Science
24 *  Carnegie Mellon University
25 *  Pittsburgh PA 15213-3890
26 *
27 * any improvements or extensions that they make and grant Carnegie the
28 * rights to redistribute these changes.
29 */
30
31#include <machine/asm.h>
32
33#ifndef NAME
34#error NAME not defined
35#endif
36
37/*
38 * Byte-swap a 2-byte quantity.  (Convert 0x0123 to 0x2301.)
39 *
40 * Argument is an unsigned 2-byte integer (u_int16_t).
41 */
42ENTRY(NAME, 1)
43	mux1	r16=in0,@rev
44	;;
45	extr.u	r8=r16,48,16
46	br.ret.sptk.few rp
47END(NAME)
48