| | 1 | /* |
| | 2 | * Copyright (c) 2000-2008 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 | /* |
| | 32 | * Mach Operating System |
| | 33 | * Copyright (c) 1991 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 | #ifndef _I386_USER_LDT_H_ |
| | 61 | #define _I386_USER_LDT_H_ |
| | 62 | |
| | 63 | /* |
| | 64 | * User LDT management. |
| | 65 | * |
| | 66 | * Each task may have its own LDT. |
| | 67 | */ |
| | 68 | |
| | 69 | #define LDT_AUTO_ALLOC 0xffffffff |
| | 70 | |
| | 71 | #ifdef KERNEL |
| | 72 | #include <i386/seg.h> |
| | 73 | |
| | 74 | struct user_ldt { |
| | 75 | unsigned int start; /* first descriptor in table */ |
| | 76 | unsigned int count; /* how many descriptors in table */ |
| | 77 | struct real_descriptor ldt[0]; /* descriptor table (variable) */ |
| | 78 | }; |
| | 79 | typedef struct user_ldt * user_ldt_t; |
| | 80 | |
| | 81 | extern user_ldt_t user_ldt_copy( |
| | 82 | user_ldt_t uldt); |
| | 83 | extern void user_ldt_free( |
| | 84 | user_ldt_t uldt); |
| | 85 | extern void user_ldt_set( |
| | 86 | thread_t thread); |
| | 87 | #else /* !KERNEL */ |
| | 88 | #include <sys/cdefs.h> |
| | 89 | |
| | 90 | union ldt_entry; |
| | 91 | |
| | 92 | __BEGIN_DECLS |
| | 93 | int i386_get_ldt(int, union ldt_entry *, int); |
| | 94 | int i386_set_ldt(int, const union ldt_entry *, int); |
| | 95 | __END_DECLS |
| | 96 | #endif /* KERNEL */ |
| | 97 | |
| | 98 | #endif /* _I386_USER_LDT_H_ */ |
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