EXTERNAL_HEADERS/architecture/i386/sel.h

   1 /*
   2  * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   5  *
   6  * Copyright (c) 1999-2003 Apple Computer, Inc.  All Rights Reserved.
   7  *
   8  * This file contains Original Code and/or Modifications of Original Code
   9  * as defined in and that are subject to the Apple Public Source License
  10  * Version 2.0 (the 'License'). You may not use this file except in
  11  * compliance with the License. Please obtain a copy of the License at
  12  * http://www.opensource.apple.com/apsl/ and read it before using this
  13  * file.
  14  *
  15  * The Original Code and all software distributed under the License are
  16  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  17  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  18  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  19  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  20  * Please see the License for the specific language governing rights and
  21  * limitations under the License.
  22  *
  23  * @APPLE_LICENSE_HEADER_END@
  24  */
  25 /*
  26  * Copyright (c) 1992 NeXT Computer, Inc.
  27  *
  28  * Intel386 Family:     Segment selector.
  29  *
  30  * HISTORY
  31  *
  32  * 29 March 1992 ? at NeXT
  33  *      Created.
  34  */
  35
  36 /*
  37  * Segment selector.
  38  */
  39
  40 #ifndef __XNU_ARCH_I386_SEL_H
  41 #define __XNU_ARCH_I386_SEL_H
  42
  43 typedef struct sel {
  44     unsigned short      rpl     :2,
  45 #define KERN_PRIV       0
  46 #define USER_PRIV       3
  47                         ti      :1,
  48 #define SEL_GDT         0
  49 #define SEL_LDT         1
  50                         index   :13;
  51 } sel_t;
  52
  53 #define NULL_SEL        ((sel_t) { 0, 0, 0 } )
  54
  55 #endif /* __XNU_ARCH_I386_SEL_H */