| | 1 | /* |
| | 2 | * Copyright (c) 2000-2006 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) 1991,1990,1989 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 | #ifndef _I386_TSS_H_ |
| | 60 | #define _I386_TSS_H_ |
| | 61 | |
| | 62 | #include <stdint.h> |
| | 63 | |
| | 64 | /* |
| | 65 | * i386 Task State Segment |
| | 66 | */ |
| | 67 | struct i386_tss { |
| | 68 | uint32_t back_link; /* segment number of previous task, |
| | 69 | if nested */ |
| | 70 | uint32_t esp0; /* initial stack pointer ... */ |
| | 71 | uint32_t ss0; /* and segment for ring 0 */ |
| | 72 | uint32_t esp1; /* initial stack pointer ... */ |
| | 73 | uint32_t ss1; /* and segment for ring 1 */ |
| | 74 | uint32_t esp2; /* initial stack pointer ... */ |
| | 75 | uint32_t ss2; /* and segment for ring 2 */ |
| | 76 | uint32_t cr3; /* CR3 - page table directory |
| | 77 | physical address */ |
| | 78 | uint32_t eip; |
| | 79 | uint32_t eflags; |
| | 80 | uint32_t eax; |
| | 81 | uint32_t ecx; |
| | 82 | uint32_t edx; |
| | 83 | uint32_t ebx; |
| | 84 | uint32_t esp; /* current stack pointer */ |
| | 85 | uint32_t ebp; |
| | 86 | uint32_t esi; |
| | 87 | uint32_t edi; |
| | 88 | uint32_t es; |
| | 89 | uint32_t cs; |
| | 90 | uint32_t ss; /* current stack segment */ |
| | 91 | uint32_t ds; |
| | 92 | uint32_t fs; |
| | 93 | uint32_t gs; |
| | 94 | uint32_t ldt; /* local descriptor table segment */ |
| | 95 | uint16_t trace_trap; /* trap on switch to this task */ |
| | 96 | uint16_t io_bit_map_offset; |
| | 97 | /* offset to start of IO permission |
| | 98 | bit map */ |
| | 99 | }; |
| | 100 | |
| | 101 | /* |
| | 102 | * Temporary stack used on kernel entry via the sysenter instruction. |
| | 103 | * Its top points on to the PCB save area. It must contain space for |
| | 104 | * a single interrupt stack frame in case of single-stepping over the sysenter. |
| | 105 | * Although this is defined as a 64-bit stack, the space is also used in |
| | 106 | * 32-bit legacy mode. For 64-bit the stack is 16-byte aligned. |
| | 107 | */ |
| | 108 | struct sysenter_stack { |
| | 109 | uint64_t stack[16]; /* Space for a 64-bit frame and some */ |
| | 110 | uint64_t top; /* Top and pointer to ISS in PCS */ |
| | 111 | }; |
| | 112 | |
| | 113 | #pragma pack(4) |
| | 114 | struct x86_64_tss { |
| | 115 | uint32_t reserved1; |
| | 116 | uint64_t rsp0; /* stack pointer for CPL0 */ |
| | 117 | uint64_t rsp1; /* stack pointer for CPL1 */ |
| | 118 | uint64_t rsp2; /* stack pointer for CPL2 */ |
| | 119 | uint32_t reserved2; |
| | 120 | uint32_t reserved3; |
| | 121 | uint64_t ist1; /* interrupt stack table 1 */ |
| | 122 | uint64_t ist2; /* interrupt stack table 2 */ |
| | 123 | uint64_t ist3; /* interrupt stack table 3 */ |
| | 124 | uint64_t ist4; /* interrupt stack table 4 */ |
| | 125 | uint64_t ist5; /* interrupt stack table 5 */ |
| | 126 | uint64_t ist6; /* interrupt stack table 6 */ |
| | 127 | uint64_t ist7; /* interrupt stack table 7 */ |
| | 128 | uint32_t reserved4; |
| | 129 | uint32_t reserved5; |
| | 130 | uint16_t reserved6; |
| | 131 | uint16_t io_bit_map_offset; |
| | 132 | /* offset to IO permission bit map */ |
| | 133 | }; |
| | 134 | #pragma pack() |
| | 135 | #endif /* _I386_TSS_H_ */ |
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