osfmk/i386/ntoh.s

   1 /*
   2  * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   5  *
   6  * This file contains Original Code and/or Modifications of Original Code
   7  * as defined in and that are subject to the Apple Public Source License
   8  * Version 2.0 (the 'License'). You may not use this file except in
   9  * compliance with the License. Please obtain a copy of the License at
  10  * http://www.opensource.apple.com/apsl/ and read it before using this
  11  * file.
  12  *
  13  * The Original Code and all software distributed under the License are
  14  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  15  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  16  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  17  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  18  * Please see the License for the specific language governing rights and
  19  * limitations under the License.
  20  *
  21  * @APPLE_LICENSE_HEADER_END@
  22  */
  23 /*
  24  * @OSF_COPYRIGHT@
  25  */
  26 /*
  27  * HISTORY
  28  *
  29  * Revision 1.1.1.1  1998/09/22 21:05:37  wsanchez
  30  * Import of Mac OS X kernel (~semeria)
  31  *
  32  * Revision 1.1.1.1  1998/03/07 02:25:38  wsanchez
  33  * Import of OSF Mach kernel (~mburg)
  34  *
  35  * Revision 1.1.6.1  1994/09/23  01:59:41  ezf
  36  *      change marker to not FREE
  37  *      [1994/09/22  21:25:28  ezf]
  38  *
  39  * Revision 1.1.2.2  1993/06/02  23:26:45  jeffc
  40  *      Added to OSF/1 R1.3 from NMK15.0.
  41  *      [1993/06/02  21:06:38  jeffc]
  42  *
  43  * Revision 1.1  1992/09/30  02:43:08  robert
  44  *      Initial revision
  45  *
  46  * $EndLog$
  47  */
  48 /* CMU_HIST */
  49 /*
  50  * Revision 2.4  91/05/14  16:12:50  mrt
  51  *      Correcting copyright
  52  *
  53  * Revision 2.3  91/02/14  15:04:55  mrt
  54  *      Changed to new Mach copyright
  55  *
  56  *
  57  * Revision 2.2  90/05/03  15:34:56  dbg
  58  *      First checkin.
  59  *
  60  *      New a.out and coff compatible .s files.
  61  *      [89/10/16            rvb]
  62  *
  63  * Revision 1.3  89/02/26  12:35:37  gm0w
  64  *      Changes for cleanup.
  65  *
  66  * 16-Feb-89  Robert Baron (rvb) at Carnegie-Mellon University
  67  *      Created.
  68  *
  69  */
  70 /* CMU_ENDHIST */
  71 /*
  72  * Mach Operating System
  73  * Copyright (c) 1991,1990,1989 Carnegie Mellon University
  74  * All Rights Reserved.
  75  *
  76  * Permission to use, copy, modify and distribute this software and its
  77  * documentation is hereby granted, provided that both the copyright
  78  * notice and this permission notice appear in all copies of the
  79  * software, derivative works or modified versions, and any portions
  80  * thereof, and that both notices appear in supporting documentation.
  81  *
  82  * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
  83  * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
  84  * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
  85  *
  86  * Carnegie Mellon requests users of this software to return to
  87  *
  88  *  Software Distribution Coordinator  or  Software.Distribution@CS.CMU.EDU
  89  *  School of Computer Science
  90  *  Carnegie Mellon University
  91  *  Pittsburgh PA 15213-3890
  92  *
  93  * any improvements or extensions that they make and grant Carnegie Mellon
  94  * the rights to redistribute these changes.
  95  */
  96 /*
  97  */
  98
  99 #include <i386/asm.h>
 100
 101 Entry(ntohl)
 102 ENTRY(htonl)
 103         movl    4(%esp), %eax
 104         rorw    $8, %ax
 105         ror     $16,%eax
 106         rorw    $8, %ax
 107         ret
 108
 109
 110 Entry(ntohs)
 111 ENTRY(htons)
 112         movzwl  4(%esp), %eax
 113         rorw    $8, %ax
 114         ret