projects / apple / xnu.git / blame
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|---|---|---|
| 1c79356b A |
1 | /* |
| 2 | * Copyright (c) 2000 Apple Computer, Inc. All rights reserved. | |
| 3 | * | |
| 4 | * @APPLE_LICENSE_HEADER_START@ | |
| 5 | * | |
| ff6e181a A |
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. Please obtain a copy of the License at | |
| 10 | * http://www.opensource.apple.com/apsl/ and read it before using this | |
| 11 | * file. | |
| 1c79356b | 12 | * |
| ff6e181a A |
13 | * The Original Code and all software distributed under the License are |
| 14 | * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER | |
| 1c79356b A |
15 | * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, |
| 16 | * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, | |
| ff6e181a A |
17 | * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. |
| 18 | * Please see the License for the specific language governing rights and | |
| 19 | * limitations under the License. | |
| 1c79356b A |
20 | * |
| 21 | * @APPLE_LICENSE_HEADER_END@ | |
| 22 | */ | |
| 23 | /* | |
| 24 | * @OSF_COPYRIGHT@ | |
| 25 | */ | |
| 26 | /* | |
| 27 | * Mach Operating System | |
| 28 | * Copyright (c) 1991,1990,1989 Carnegie Mellon University | |
| 29 | * All Rights Reserved. | |
| 30 | * | |
| 31 | * Permission to use, copy, modify and distribute this software and its | |
| 32 | * documentation is hereby granted, provided that both the copyright | |
| 33 | * notice and this permission notice appear in all copies of the | |
| 34 | * software, derivative works or modified versions, and any portions | |
| 35 | * thereof, and that both notices appear in supporting documentation. | |
| 36 | * | |
| 37 | * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS" | |
| 38 | * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR | |
| 39 | * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE. | |
| 40 | * | |
| 41 | * Carnegie Mellon requests users of this software to return to | |
| 42 | * | |
| 43 | * Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU | |
| 44 | * School of Computer Science | |
| 45 | * Carnegie Mellon University | |
| 46 | * Pittsburgh PA 15213-3890 | |
| 47 | * | |
| 48 | * any improvements or extensions that they make and grant Carnegie Mellon | |
| 49 | * the rights to redistribute these changes. | |
| 50 | */ | |
| 51 | /* | |
| 52 | */ | |
| 53 | ||
| 54 | #ifndef _I386_TSS_H_ | |
| 55 | #define _I386_TSS_H_ | |
| 56 | ||
| 57 | /* | |
| 58 | * i386 Task State Segment | |
| 59 | */ | |
| 60 | struct i386_tss { | |
| 61 | int back_link; /* segment number of previous task, | |
| 62 | if nested */ | |
| 63 | int esp0; /* initial stack pointer ... */ | |
| 64 | int ss0; /* and segment for ring 0 */ | |
| 65 | int esp1; /* initial stack pointer ... */ | |
| 66 | int ss1; /* and segment for ring 1 */ | |
| 67 | int esp2; /* initial stack pointer ... */ | |
| 68 | int ss2; /* and segment for ring 2 */ | |
| 69 | int cr3; /* CR3 - page table directory | |
| 70 | physical address */ | |
| 71 | int eip; | |
| 72 | int eflags; | |
| 73 | int eax; | |
| 74 | int ecx; | |
| 75 | int edx; | |
| 76 | int ebx; | |
| 77 | int esp; /* current stack pointer */ | |
| 78 | int ebp; | |
| 79 | int esi; | |
| 80 | int edi; | |
| 81 | int es; | |
| 82 | int cs; | |
| 83 | int ss; /* current stack segment */ | |
| 84 | int ds; | |
| 85 | int fs; | |
| 86 | int gs; | |
| 87 | int ldt; /* local descriptor table segment */ | |
| 88 | unsigned short trace_trap; /* trap on switch to this task */ | |
| 89 | unsigned short io_bit_map_offset; | |
| 90 | /* offset to start of IO permission | |
| 91 | bit map */ | |
| 92 | }; | |
| 93 | ||
| 94 | #endif /* _I386_TSS_H_ */ |