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  * 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  * Copyright (c) 1992 NeXT Computer, Inc.
  25  *
  26  * Intel386 Family:     Segment selector.
  27  *
  28  * HISTORY
  29  *
  30  * 29 March 1992 ? at NeXT
  31  *      Created.
  32  */
  33
  34 /*
  35  * Segment selector.
  36  */
  37
  38 #ifndef __XNU_ARCH_I386_SEL_H
  39 #define __XNU_ARCH_I386_SEL_H
  40
  41 typedef struct sel {
  42     unsigned short      rpl     :2,
  43 #define KERN_PRIV       0
  44 #define USER_PRIV       3
  45                         ti      :1,
  46 #define SEL_GDT         0
  47 #define SEL_LDT         1
  48                         index   :13;
  49 } sel_t;
  50
  51 #define NULL_SEL        ((sel_t) { 0, 0, 0 } )
  52
  53 #endif /* __XNU_ARCH_I386_SEL_H */