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#include <i386/pmap.h> 65#include <mach/i386/vm_types.h> 66#include <mach/i386/vm_param.h> 67 68 69struct fake_descriptor master_ldt[LDTSZ] __attribute__ ((aligned (4096))) = { 70 [SEL_TO_INDEX(SYSENTER_CS)] { /* kernel code (sysenter) */ 71 0, 72 0xfffff, 73 SZ_32|SZ_G, 74 ACC_P|ACC_PL_K|ACC_CODE_R 75 }, 76 [SEL_TO_INDEX(SYSENTER_DS)] { /* kernel data (sysenter) */ 77 0, 78 0xfffff, 79 SZ_32|SZ_G, 80 ACC_P|ACC_PL_K|ACC_DATA_W 81 }, 82 [SEL_TO_INDEX(USER_CS)] { /* user code segment */ 83 0, 84 0xfffff, 85 SZ_32|SZ_G, 86 ACC_P|ACC_PL_U|ACC_CODE_R 87 }, 88 [SEL_TO_INDEX(USER_DS)] { /* user data segment */ 89 0, 90 0xfffff, 91 SZ_32|SZ_G, 92 ACC_P|ACC_PL_U|ACC_DATA_W 93 }, 94 [SEL_TO_INDEX(USER64_CS)] { /* user 64-bit code segment */ 95 0, 96 0xfffff, 97 SZ_64|SZ_G, 98 ACC_P|ACC_PL_U|ACC_CODE_R 99 }, 100 [SEL_TO_INDEX(USER_CTHREAD)] { /* user cthread segment */ 101 0, 102 0xfffff, 103 SZ_32|SZ_G, 104 ACC_P|ACC_PL_U|ACC_DATA_W 105 }, 106}; 107