xref: /xnu-8792.41.9/EXTERNAL_HEADERS/architecture/i386/sel.h (revision 5c2921b07a2480ab43ec66f5b9e41cb872bc554f)
1 /*
2  * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
3  *
4  * @APPLE_OSREFERENCE_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. The rights granted to you under the License
10  * may not be used to create, or enable the creation or redistribution of,
11  * unlawful or unlicensed copies of an Apple operating system, or to
12  * circumvent, violate, or enable the circumvention or violation of, any
13  * terms of an Apple operating system software license agreement.
14  *
15  * Please obtain a copy of the License at
16  * http://www.opensource.apple.com/apsl/ and read it before using this file.
17  *
18  * The Original Code and all software distributed under the License are
19  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
20  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
21  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
22  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
23  * Please see the License for the specific language governing rights and
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25  *
26  * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
27  */
28 /*
29  * Copyright (c) 1992 NeXT Computer, Inc.
30  *
31  * Intel386 Family:	Segment selector.
32  *
33  * HISTORY
34  *
35  * 29 March 1992 ? at NeXT
36  *	Created.
37  */
38 
39 /*
40  * Segment selector.
41  */
42 
43 #ifndef __XNU_ARCH_I386_SEL_H
44 #define __XNU_ARCH_I386_SEL_H
45 
46 typedef struct sel {
47     unsigned short	rpl	:2,
48 #define KERN_PRIV	0
49 #define USER_PRIV	3
50 			ti	:1,
51 #define SEL_GDT		0
52 #define SEL_LDT		1
53 			index	:13;
54 } sel_t;
55 
56 #define NULL_SEL	((sel_t) { 0, 0, 0 } )
57 
58 #endif /* __XNU_ARCH_I386_SEL_H */
59