1/*
2 * Copyright (c) 2000-2013 Apple 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/* CMU_ENDHIST */
32/*
33 * Mach Operating System
34 * Copyright (c) 1991,1990 Carnegie Mellon University
35 * All Rights Reserved.
36 *
37 * Permission to use, copy, modify and distribute this software and its
38 * documentation is hereby granted, provided that both the copyright
39 * notice and this permission notice appear in all copies of the
40 * software, derivative works or modified versions, and any portions
41 * thereof, and that both notices appear in supporting documentation.
42 *
43 * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
44 * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
45 * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
46 *
47 * Carnegie Mellon requests users of this software to return to
48 *
49 * Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
50 * School of Computer Science
51 * Carnegie Mellon University
52 * Pittsburgh PA 15213-3890
53 *
54 * any improvements or extensions that they make and grant Carnegie Mellon
55 * the rights to redistribute these changes.
56 */
57/*
58 */
59
60/*
61 * Global descriptor table.
62 */
63#include <i386/seg.h>
64
65struct real_descriptor master_gdt[GDTSZ]
66 __attribute__((section("__HIB,__desc")))
67 __attribute__((aligned(PAGE_SIZE))) = {
68 [SEL_TO_INDEX(KERNEL32_CS)] = MAKE_REAL_DESCRIPTOR( /* kernel 32-bit code */
69 0,
70 0xfffff,
71 SZ_32|SZ_G,
72 ACC_P|ACC_PL_K|ACC_CODE_R
73 ),
74 [SEL_TO_INDEX(KERNEL_DS)] = MAKE_REAL_DESCRIPTOR( /* kernel data */
75 0,
76 0xfffff,
77 SZ_32|SZ_G,
78 ACC_P|ACC_PL_K|ACC_DATA_W
79 ),
80 [SEL_TO_INDEX(KERNEL64_CS)] = MAKE_REAL_DESCRIPTOR( /* kernel 64-bit code */
81 0,
82 0xfffff,
83 SZ_64|SZ_G,
84 ACC_P|ACC_PL_K|ACC_CODE_R
85 ),
86 [SEL_TO_INDEX(KERNEL64_SS)] = MAKE_REAL_DESCRIPTOR( /* kernel 64-bit syscall stack */
87 0,
88 0xfffff,
89 SZ_32|SZ_G,
90 ACC_P|ACC_PL_K|ACC_DATA_W
91 ),
92 [SEL_TO_INDEX(USER_CS)] = MAKE_REAL_DESCRIPTOR( /* 32-bit user code segment */
93 0,
94 0xfffff,
95 SZ_32|SZ_G,
96 ACC_P|ACC_PL_U|ACC_CODE_R
97 ),
98 [SEL_TO_INDEX(USER_DS)] = MAKE_REAL_DESCRIPTOR( /* 32-bit user data segment */
99 0,
100 0xfffff,
101 SZ_32|SZ_G,
102 ACC_P|ACC_PL_U|ACC_DATA_W
103 ),
104 [SEL_TO_INDEX(USER64_CS)] = MAKE_REAL_DESCRIPTOR( /* user 64-bit code segment */
105 0,
106 0xfffff,
107 SZ_64|SZ_G,
108 ACC_P|ACC_PL_U|ACC_CODE_R
109 ),
110};
111