| 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:␉Descriptor tables.␊ |
| 27 | *␊ |
| 28 | * HISTORY␊ |
| 29 | *␊ |
| 30 | * 30 March 1992 ? at NeXT␊ |
| 31 | *␉Created.␊ |
| 32 | */␊ |
| 33 | ␊ |
| 34 | #ifndef _ARCH_I386_TABLE_H_␊ |
| 35 | #define _ARCH_I386_TABLE_H_␊ |
| 36 | ␊ |
| 37 | #include <architecture/i386/desc.h>␊ |
| 38 | #include <architecture/i386/tss.h>␊ |
| 39 | ␊ |
| 40 | /*␊ |
| 41 | * A totally generic descriptor␊ |
| 42 | * table entry.␊ |
| 43 | */␊ |
| 44 | ␊ |
| 45 | typedef union dt_entry {␊ |
| 46 | code_desc_t␉␉code;␊ |
| 47 | data_desc_t␉␉data;␊ |
| 48 | ldt_desc_t␉␉ldt;␊ |
| 49 | tss_desc_t␉␉task_state;␊ |
| 50 | call_gate_t␉␉call_gate;␊ |
| 51 | trap_gate_t␉␉trap_gate;␊ |
| 52 | intr_gate_t␉␉intr_gate;␊ |
| 53 | task_gate_t␉␉task_gate;␊ |
| 54 | } dt_entry_t;␊ |
| 55 | ␊ |
| 56 | #define DESC_TBL_MAX␉8192␊ |
| 57 | ␊ |
| 58 | /*␊ |
| 59 | * Global descriptor table.␊ |
| 60 | */␊ |
| 61 | ␊ |
| 62 | typedef union gdt_entry {␊ |
| 63 | code_desc_t␉␉code;␊ |
| 64 | data_desc_t␉␉data;␊ |
| 65 | ldt_desc_t␉␉ldt;␊ |
| 66 | call_gate_t␉␉call_gate;␊ |
| 67 | task_gate_t␉␉task_gate;␊ |
| 68 | tss_desc_t␉␉task_state;␊ |
| 69 | } gdt_entry_t;␊ |
| 70 | ␊ |
| 71 | typedef gdt_entry_t␉gdt_t;␊ |
| 72 | ␊ |
| 73 | /*␊ |
| 74 | * Interrupt descriptor table.␊ |
| 75 | */␊ |
| 76 | ␊ |
| 77 | typedef union idt_entry {␊ |
| 78 | trap_gate_t␉␉trap_gate;␊ |
| 79 | intr_gate_t␉␉intr_gate;␊ |
| 80 | task_gate_t␉␉task_gate;␊ |
| 81 | } idt_entry_t;␊ |
| 82 | ␊ |
| 83 | typedef idt_entry_t␉idt_t;␊ |
| 84 | ␊ |
| 85 | /*␊ |
| 86 | * Local descriptor table.␊ |
| 87 | */␊ |
| 88 | ␊ |
| 89 | typedef union ldt_entry {␊ |
| 90 | code_desc_t␉␉code;␊ |
| 91 | data_desc_t␉␉data;␊ |
| 92 | call_gate_t␉␉call_gate;␊ |
| 93 | task_gate_t␉␉task_gate;␊ |
| 94 | } ldt_entry_t;␊ |
| 95 | ␊ |
| 96 | typedef ldt_entry_t␉ldt_t;␊ |
| 97 | ␊ |
| 98 | #endif␉/* _ARCH_I386_TABLE_H_ */␊ |
| 99 | |
