| 1 | /*␊ |
| 2 | * Copyright (c) 1999 Apple Computer, Inc. All rights reserved.␊ |
| 3 | *␊ |
| 4 | * @APPLE_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. Please obtain a copy of the License at␊ |
| 10 | * http://www.opensource.apple.com/apsl/ and read it before using this␊ |
| 11 | * file.␊ |
| 12 | * ␊ |
| 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␊ |
| 15 | * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,␊ |
| 16 | * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,␊ |
| 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.␊ |
| 20 | * ␊ |
| 21 | * @APPLE_LICENSE_HEADER_END@␊ |
| 22 | */␊ |
| 23 | /*␊ |
| 24 | * Copyright (c) 1992 NeXT Computer, Inc.␊ |
| 25 | *␊ |
| 26 | * Intel386 Family:␉Task State Segment.␊ |
| 27 | *␊ |
| 28 | * HISTORY␊ |
| 29 | *␊ |
| 30 | * 29 March 1992 ? at NeXT␊ |
| 31 | *␉Created.␊ |
| 32 | */␊ |
| 33 | ␊ |
| 34 | #ifndef _ARCH_I386_TSS_H_␊ |
| 35 | #define _ARCH_I386_TSS_H_␊ |
| 36 | ␊ |
| 37 | #include <architecture/i386/sel.h>␊ |
| 38 | ␊ |
| 39 | /*␊ |
| 40 | * Task State segment.␊ |
| 41 | */␊ |
| 42 | ␊ |
| 43 | typedef struct tss {␊ |
| 44 | sel_t␉␉oldtss;␊ |
| 45 | unsigned int␉␉:0;␊ |
| 46 | unsigned int␉esp0;␊ |
| 47 | sel_t␉␉ss0;␊ |
| 48 | unsigned int␉␉:0;␊ |
| 49 | unsigned int␉esp1;␊ |
| 50 | sel_t␉␉ss1;␊ |
| 51 | unsigned int␉␉:0;␊ |
| 52 | unsigned int␉esp2;␊ |
| 53 | sel_t␉␉ss2;␊ |
| 54 | unsigned int␉␉:0;␊ |
| 55 | unsigned int␉cr3;␊ |
| 56 | unsigned int␉eip;␊ |
| 57 | unsigned int␉eflags;␊ |
| 58 | unsigned int␉eax;␊ |
| 59 | unsigned int␉ecx;␊ |
| 60 | unsigned int␉edx;␊ |
| 61 | unsigned int␉ebx;␊ |
| 62 | unsigned int␉esp;␊ |
| 63 | unsigned int␉ebp;␊ |
| 64 | unsigned int␉esi;␊ |
| 65 | unsigned int␉edi;␊ |
| 66 | sel_t␉␉es;␊ |
| 67 | unsigned int␉␉:0;␊ |
| 68 | sel_t␉␉cs;␊ |
| 69 | unsigned int␉␉:0;␊ |
| 70 | sel_t␉␉ss;␊ |
| 71 | unsigned int␉␉:0;␊ |
| 72 | sel_t␉␉ds;␊ |
| 73 | unsigned int␉␉:0;␊ |
| 74 | sel_t␉␉fs;␊ |
| 75 | unsigned int␉␉:0;␊ |
| 76 | sel_t␉␉gs;␊ |
| 77 | unsigned int␉␉:0;␊ |
| 78 | sel_t␉␉ldt;␊ |
| 79 | unsigned int␉␉:0;␊ |
| 80 | unsigned int␉t␉:1,␊ |
| 81 | ␉␉␉␉:15,␊ |
| 82 | ␉␉␉io_bmap␉:16;␊ |
| 83 | } tss_t;␊ |
| 84 | ␊ |
| 85 | #define TSS_SIZE(n)␉(sizeof (struct tss) + (n))␊ |
| 86 | ␊ |
| 87 | /*␊ |
| 88 | * Task State segment descriptor.␊ |
| 89 | */␊ |
| 90 | ␊ |
| 91 | typedef struct tss_desc {␊ |
| 92 | unsigned short␉limit00;␊ |
| 93 | unsigned short␉base00;␊ |
| 94 | unsigned char␉base16;␊ |
| 95 | unsigned char␉type␉:5,␊ |
| 96 | #define DESC_TSS␉0x09␊ |
| 97 | ␉␉␉dpl␉:2,␊ |
| 98 | ␉␉␉present␉:1;␊ |
| 99 | unsigned char␉limit16␉:4,␊ |
| 100 | ␉␉␉␉:3,␊ |
| 101 | ␉␉␉granular:1;␊ |
| 102 | unsigned char␉base24;␊ |
| 103 | } tss_desc_t;␊ |
| 104 | ␊ |
| 105 | /*␊ |
| 106 | * Task gate descriptor.␊ |
| 107 | */␊ |
| 108 | ␊ |
| 109 | typedef struct task_gate {␊ |
| 110 | unsigned short␉␉:16;␊ |
| 111 | sel_t␉␉tss;␊ |
| 112 | unsigned int␉␉:8,␊ |
| 113 | ␉␉␉type␉:5,␊ |
| 114 | #define DESC_TASK_GATE␉0x05␊ |
| 115 | ␉␉␉dpl␉:2,␊ |
| 116 | ␉␉␉present␉:1,␊ |
| 117 | ␉␉␉␉:0;␊ |
| 118 | } task_gate_t;␊ |
| 119 | ␊ |
| 120 | #endif␉/* _ARCH_I386_TSS_H_ */␊ |
| 121 | |
