projects / apple / xnu.git / blame
| Commit | Line | Data |
|---|---|---|
| 1c79356b A |
1 | /* |
| 2 | * Copyright (c) 2000 Apple Computer, Inc. All rights reserved. | |
| 3 | * | |
| 4 | * @APPLE_LICENSE_HEADER_START@ | |
| 5 | * | |
| 43866e37 | 6 | * Copyright (c) 1999-2003 Apple Computer, Inc. All Rights Reserved. |
| 1c79356b | 7 | * |
| 43866e37 A |
8 | * This file contains Original Code and/or Modifications of Original Code |
| 9 | * as defined in and that are subject to the Apple Public Source License | |
| 10 | * Version 2.0 (the 'License'). You may not use this file except in | |
| 11 | * compliance with the License. Please obtain a copy of the License at | |
| 12 | * http://www.opensource.apple.com/apsl/ and read it before using this | |
| 13 | * file. | |
| 14 | * | |
| 15 | * The Original Code and all software distributed under the License are | |
| 16 | * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER | |
| 1c79356b A |
17 | * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, |
| 18 | * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, | |
| 43866e37 A |
19 | * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. |
| 20 | * Please see the License for the specific language governing rights and | |
| 21 | * limitations under the License. | |
| 1c79356b A |
22 | * |
| 23 | * @APPLE_LICENSE_HEADER_END@ | |
| 24 | */ | |
| 25 | /* | |
| 26 | * @OSF_COPYRIGHT@ | |
| 27 | */ | |
| 28 | /* CMU_ENDHIST */ | |
| 29 | /* | |
| 30 | * Mach Operating System | |
| 31 | * Copyright (c) 1991,1990 Carnegie Mellon University | |
| 32 | * All Rights Reserved. | |
| 33 | * | |
| 34 | * Permission to use, copy, modify and distribute this software and its | |
| 35 | * documentation is hereby granted, provided that both the copyright | |
| 36 | * notice and this permission notice appear in all copies of the | |
| 37 | * software, derivative works or modified versions, and any portions | |
| 38 | * thereof, and that both notices appear in supporting documentation. | |
| 39 | * | |
| 40 | * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS" | |
| 41 | * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR | |
| 42 | * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE. | |
| 43 | * | |
| 44 | * Carnegie Mellon requests users of this software to return to | |
| 45 | * | |
| 46 | * Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU | |
| 47 | * School of Computer Science | |
| 48 | * Carnegie Mellon University | |
| 49 | * Pittsburgh PA 15213-3890 | |
| 50 | * | |
| 51 | * any improvements or extensions that they make and grant Carnegie Mellon | |
| 52 | * the rights to redistribute these changes. | |
| 53 | */ | |
| 54 | /* | |
| 55 | */ | |
| 56 | ||
| 57 | /* | |
| 58 | * Global descriptor table. | |
| 59 | */ | |
| 60 | #include <i386/thread.h> | |
| 61 | #include <i386/seg.h> | |
| 62 | #include <mach/i386/vm_param.h> | |
| 63 | #include <kern/thread.h> | |
| 64 | #include <mach_kdb.h> | |
| 65 | ||
| 66 | #ifdef MACH_BSD | |
| 67 | extern int trap_unix_syscall(void), trap_mach25_syscall(void), | |
| 68 | trap_machdep_syscall(void), syscall(void); | |
| 69 | #endif | |
| 70 | ||
| 71 | struct fake_descriptor gdt[GDTSZ] = { | |
| 72 | /* 0x000 */ { 0, 0, 0, 0 }, /* always NULL */ | |
| 73 | /* 0x008 */ { LINEAR_KERNEL_ADDRESS + VM_MIN_ADDRESS, | |
| 74 | (VM_MAX_KERNEL_ADDRESS-1-VM_MIN_KERNEL_ADDRESS)>>12, | |
| 75 | SZ_32|SZ_G, | |
| 76 | ACC_P|ACC_PL_K|ACC_CODE_R | |
| 77 | }, /* kernel code */ | |
| 78 | /* 0x010 */ { LINEAR_KERNEL_ADDRESS + VM_MIN_ADDRESS, | |
| 79 | (VM_MAX_KERNEL_ADDRESS-1-VM_MIN_KERNEL_ADDRESS)>>12, | |
| 80 | SZ_32|SZ_G, | |
| 81 | ACC_P|ACC_PL_K|ACC_DATA_W | |
| 82 | }, /* kernel data */ | |
| 83 | /* 0x018 */ { LINEAR_KERNEL_ADDRESS + (unsigned int)ldt, | |
| 84 | LDTSZ*sizeof(struct fake_descriptor)-1, | |
| 85 | 0, | |
| 86 | ACC_P|ACC_PL_K|ACC_LDT | |
| 87 | }, /* local descriptor table */ | |
| 88 | /* 0x020 */ { LINEAR_KERNEL_ADDRESS + (unsigned int)&ktss, | |
| 89 | sizeof(struct i386_tss)-1, | |
| 90 | 0, | |
| 91 | ACC_P|ACC_PL_K|ACC_TSS | |
| 92 | }, /* TSS for this processor */ | |
| 93 | #ifdef MACH_BSD | |
| 94 | /* 0x28 */ { (unsigned int) &trap_unix_syscall, | |
| 95 | KERNEL_CS, | |
| 96 | 0, /* no parameters */ | |
| 97 | ACC_P|ACC_PL_U|ACC_CALL_GATE | |
| 98 | }, | |
| 99 | /* 0x30 */ { (unsigned int) &trap_mach25_syscall, | |
| 100 | KERNEL_CS, | |
| 101 | 0, /* no parameters */ | |
| 102 | ACC_P|ACC_PL_U|ACC_CALL_GATE | |
| 103 | }, | |
| 104 | /* 0x38 */ { (unsigned int) &trap_machdep_syscall, | |
| 105 | KERNEL_CS, | |
| 106 | 0, /* no parameters */ | |
| 107 | ACC_P|ACC_PL_U|ACC_CALL_GATE | |
| 108 | }, | |
| 109 | #else | |
| 110 | /* 0x028 */ { 0, 0, 0, 0 }, /* per-thread LDT */ | |
| 111 | /* 0x030 */ { 0, 0, 0, 0 }, /* per-thread TSS for IO bitmap */ | |
| 112 | /* 0x038 */ { 0, 0, 0, 0 }, | |
| 113 | #endif | |
| 114 | /* 0x040 */ { 0, 0, 0, 0 }, | |
| 115 | /* 0x048 */ { LINEAR_KERNEL_ADDRESS + (unsigned int)&cpu_data[0], | |
| 116 | sizeof(cpu_data)-1, | |
| 117 | SZ_32, | |
| 118 | ACC_P|ACC_PL_K|ACC_DATA_W | |
| 119 | }, /* per-CPU current thread address */ | |
| 120 | #if MACH_KDB | |
| 121 | /* 0x050 */ { LINEAR_KERNEL_ADDRESS + (unsigned int)&dbtss, | |
| 122 | sizeof(struct i386_tss)-1, | |
| 123 | 0, | |
| 124 | ACC_P|ACC_PL_K|ACC_TSS | |
| 125 | } /* TSS for this processor */ | |
| 126 | #endif /* MACH_KDB */ | |
| 127 | }; |