osfmk/i386/ntoh.s

   1 /*
   2  * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_LICENSE_OSREFERENCE_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.  The rights granted to you under the
  10  * License may not be used to create, or enable the creation or
  11  * redistribution of, unlawful or unlicensed copies of an Apple operating
  12  * system, or to circumvent, violate, or enable the circumvention or
  13  * violation of, any terms of an Apple operating system software license
  14  * agreement.
  15  *
  16  * Please obtain a copy of the License at
  17  * http://www.opensource.apple.com/apsl/ and read it before using this
  18  * file.
  19  *
  20  * The Original Code and all software distributed under the License are
  21  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  22  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  23  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  24  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  25  * Please see the License for the specific language governing rights and
  26  * limitations under the License.
  27  *
  28  * @APPLE_LICENSE_OSREFERENCE_HEADER_END@
  29  */
  30 /*
  31  * @OSF_COPYRIGHT@
  32  */
  33 /*
  34  * HISTORY
  35  *
  36  * Revision 1.1.1.1  1998/09/22 21:05:37  wsanchez
  37  * Import of Mac OS X kernel (~semeria)
  38  *
  39  * Revision 1.1.1.1  1998/03/07 02:25:38  wsanchez
  40  * Import of OSF Mach kernel (~mburg)
  41  *
  42  * Revision 1.1.6.1  1994/09/23  01:59:41  ezf
  43  *      change marker to not FREE
  44  *      [1994/09/22  21:25:28  ezf]
  45  *
  46  * Revision 1.1.2.2  1993/06/02  23:26:45  jeffc
  47  *      Added to OSF/1 R1.3 from NMK15.0.
  48  *      [1993/06/02  21:06:38  jeffc]
  49  *
  50  * Revision 1.1  1992/09/30  02:43:08  robert
  51  *      Initial revision
  52  *
  53  * $EndLog$
  54  */
  55 /* CMU_HIST */
  56 /*
  57  * Revision 2.4  91/05/14  16:12:50  mrt
  58  *      Correcting copyright
  59  *
  60  * Revision 2.3  91/02/14  15:04:55  mrt
  61  *      Changed to new Mach copyright
  62  *
  63  *
  64  * Revision 2.2  90/05/03  15:34:56  dbg
  65  *      First checkin.
  66  *
  67  *      New a.out and coff compatible .s files.
  68  *      [89/10/16            rvb]
  69  *
  70  * Revision 1.3  89/02/26  12:35:37  gm0w
  71  *      Changes for cleanup.
  72  *
  73  * 16-Feb-89  Robert Baron (rvb) at Carnegie-Mellon University
  74  *      Created.
  75  *
  76  */
  77 /* CMU_ENDHIST */
  78 /*
  79  * Mach Operating System
  80  * Copyright (c) 1991,1990,1989 Carnegie Mellon University
  81  * All Rights Reserved.
  82  *
  83  * Permission to use, copy, modify and distribute this software and its
  84  * documentation is hereby granted, provided that both the copyright
  85  * notice and this permission notice appear in all copies of the
  86  * software, derivative works or modified versions, and any portions
  87  * thereof, and that both notices appear in supporting documentation.
  88  *
  89  * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
  90  * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
  91  * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
  92  *
  93  * Carnegie Mellon requests users of this software to return to
  94  *
  95  *  Software Distribution Coordinator  or  Software.Distribution@CS.CMU.EDU
  96  *  School of Computer Science
  97  *  Carnegie Mellon University
  98  *  Pittsburgh PA 15213-3890
  99  *
 100  * any improvements or extensions that they make and grant Carnegie Mellon
 101  * the rights to redistribute these changes.
 102  */
 103 /*
 104  */
 105
 106 #include <i386/asm.h>
 107
 108 Entry(ntohl)
 109 ENTRY(htonl)
 110         movl    4(%esp), %eax
 111         rorw    $8, %ax
 112         ror     $16,%eax
 113         rorw    $8, %ax
 114         ret
 115
 116
 117 Entry(ntohs)
 118 ENTRY(htons)
 119         movzwl  4(%esp), %eax
 120         rorw    $8, %ax
 121         ret