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      1  1.2  cherry /*	$NetBSD: byte_swap_2.S,v 1.2 2006/04/07 14:27:33 cherry Exp $	*/
      2  1.1  cherry 
      3  1.1  cherry /*-
      4  1.1  cherry  * Copyright (c) 1996 Carnegie-Mellon University.
      5  1.1  cherry  * All rights reserved.
      6  1.1  cherry  *
      7  1.1  cherry  * Author: Chris G. Demetriou
      8  1.1  cherry  *
      9  1.1  cherry  * Permission to use, copy, modify and distribute this software and
     10  1.1  cherry  * its documentation is hereby granted, provided that both the copyright
     11  1.1  cherry  * notice and this permission notice appear in all copies of the
     12  1.1  cherry  * software, derivative works or modified versions, and any portions
     13  1.1  cherry  * thereof, and that both notices appear in supporting documentation.
     14  1.1  cherry  *
     15  1.1  cherry  * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
     16  1.1  cherry  * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND
     17  1.1  cherry  * FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
     18  1.1  cherry  *
     19  1.1  cherry  * Carnegie Mellon requests users of this software to return to
     20  1.1  cherry  *
     21  1.1  cherry  *  Software Distribution Coordinator  or  Software.Distribution (at) CS.CMU.EDU
     22  1.1  cherry  *  School of Computer Science
     23  1.1  cherry  *  Carnegie Mellon University
     24  1.1  cherry  *  Pittsburgh PA 15213-3890
     25  1.1  cherry  *
     26  1.1  cherry  * any improvements or extensions that they make and grant Carnegie the
     27  1.1  cherry  * rights to redistribute these changes.
     28  1.1  cherry  */
     29  1.1  cherry 
     30  1.1  cherry #include <machine/asm.h>
     31  1.1  cherry 
     32  1.1  cherry #ifndef NAME
     33  1.1  cherry #error NAME not defined
     34  1.1  cherry #endif
     35  1.1  cherry 
     36  1.1  cherry /*
     37  1.1  cherry  * Byte-swap a 2-byte quantity.  (Convert 0x0123 to 0x2301.)
     38  1.1  cherry  *
     39  1.1  cherry  * Argument is an unsigned 2-byte integer (u_int16_t).
     40  1.1  cherry  */
     41  1.1  cherry ENTRY(NAME, 1)
     42  1.1  cherry 	mux1	r16=in0,@rev
     43  1.1  cherry 	;;
     44  1.1  cherry 	extr.u	r8=r16,48,16
     45  1.1  cherry 	br.ret.sptk.few rp
     46  1.1  cherry END(NAME)
     47