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  * 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  * Copyright (c) 1992 NeXT Computer, Inc.
  24  *
  25  * Intel386 Family:     Segment selector.
  26  *
  27  * HISTORY
  28  *
  29  * 29 March 1992 ? at NeXT
  30  *      Created.
  31  */
  32
  33 /*
  34  * Segment selector.
  35  */
  36
  37 #ifndef __XNU_ARCH_I386_SEL_H
  38 #define __XNU_ARCH_I386_SEL_H
  39
  40 typedef struct sel {
  41     unsigned short      rpl     :2,
  42 #define KERN_PRIV       0
  43 #define USER_PRIV       3
  44                         ti      :1,
  45 #define SEL_GDT         0
  46 #define SEL_LDT         1
  47                         index   :13;
  48 } sel_t;
  49
  50 #define NULL_SEL        ((sel_t) { 0, 0, 0 } )
  51
  52 #endif /* __XNU_ARCH_I386_SEL_H */