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
24 * limitations under the License.
25 *
26 * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
27 */
28/*
29 * @OSF_COPYRIGHT@
30 */
31/*
32 * Mach Operating System
33 * Copyright (c) 1991,1990 Carnegie Mellon University
34 * All Rights Reserved.
35 *
36 * Permission to use, copy, modify and distribute this software and its
37 * documentation is hereby granted, provided that both the copyright
38 * notice and this permission notice appear in all copies of the
39 * software, derivative works or modified versions, and any portions
40 * thereof, and that both notices appear in supporting documentation.
41 *
42 * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
43 * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
44 * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
45 *
46 * Carnegie Mellon requests users of this software to return to
47 *
48 *  Software Distribution Coordinator  or  Software.Distribution@CS.CMU.EDU
49 *  School of Computer Science
50 *  Carnegie Mellon University
51 *  Pittsburgh PA 15213-3890
52 *
53 * any improvements or extensions that they make and grant Carnegie Mellon
54 * the rights to redistribute these changes.
55 */
56/*
57 */
58
59/*
60 * "Local" descriptor table. At the moment, all tasks use the
61 * same LDT.
62 */
63#include <i386/seg.h>
64
65
66struct real_descriptor	master_ldt[LDTSZ] __attribute__ ((aligned (4096))) = {
67#ifdef __i386__
68	[SEL_TO_INDEX(SYSENTER_CS)] = MAKE_REAL_DESCRIPTOR(	/* kernel code (sysenter) */
69		0,
70		0xfffff,
71		SZ_32|SZ_G,
72		ACC_P|ACC_PL_K|ACC_CODE_R
73	),
74	[SEL_TO_INDEX(SYSENTER_DS)] = MAKE_REAL_DESCRIPTOR(	/* kernel data (sysenter) */
75		0,
76		0xfffff,
77		SZ_32|SZ_G,
78		ACC_P|ACC_PL_K|ACC_DATA_W
79	),
80	[SEL_TO_INDEX(USER_CS)] = MAKE_REAL_DESCRIPTOR(	/* user code segment */
81		0,
82		0xfffff,
83 		SZ_32|SZ_G,
84		ACC_P|ACC_PL_U|ACC_CODE_R
85	),
86	[SEL_TO_INDEX(USER_DS)] = MAKE_REAL_DESCRIPTOR(	/* user data segment */
87		0,
88		0xfffff,
89		SZ_32|SZ_G,
90		ACC_P|ACC_PL_U|ACC_DATA_W
91	),
92	[SEL_TO_INDEX(USER64_CS)] = MAKE_REAL_DESCRIPTOR(	/* user 64-bit code segment */
93		0,
94		0xfffff,
95		SZ_64|SZ_G,
96		ACC_P|ACC_PL_U|ACC_CODE_R
97	),
98#endif
99	[SEL_TO_INDEX(USER_CTHREAD)] = MAKE_REAL_DESCRIPTOR(	/* user cthread segment */
100		0,
101		0xfffff,
102		SZ_32|SZ_G,
103		ACC_P|ACC_PL_U|ACC_DATA_W
104	),
105};
106