osfmk/i386/ntoh.s

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