projects / apple / xnu.git / blame
| Commit | Line | Data |
|---|---|---|
| 1c79356b | 1 | /* |
| 5ba3f43e | 2 | * Copyright (c) 2017 Apple Inc. All rights reserved. |
| 5d5c5d0d | 3 | * |
| 2d21ac55 | 4 | * @APPLE_OSREFERENCE_LICENSE_HEADER_START@ |
| 5ba3f43e | 5 | * |
| 2d21ac55 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. 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. | |
| 5ba3f43e | 14 | * |
| 2d21ac55 A |
15 | * Please obtain a copy of the License at |
| 16 | * http://www.opensource.apple.com/apsl/ and read it before using this file. | |
| 5ba3f43e | 17 | * |
| 2d21ac55 A |
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 | |
| 8f6c56a5 A |
20 | * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, |
| 21 | * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, | |
| 2d21ac55 A |
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. | |
| 5ba3f43e | 25 | * |
| 2d21ac55 | 26 | * @APPLE_OSREFERENCE_LICENSE_HEADER_END@ |
| 1c79356b | 27 | */ |
| 5ba3f43e A |
28 | #ifndef _MACHDEP_INTERNAL_H_ |
| 29 | #define _MACHDEP_INTERNAL_H_ | |
| 1c79356b | 30 | |
| 5ba3f43e A |
31 | /* We cache the current cthread pointer in the high bits of TPIDRRO_EL0 and |
| 32 | * the current CPU number in the low bits. The cthread pointer must be aligned | |
| 33 | * sufficiently that the maximum CPU number will fit. | |
| 34 | * | |
| 35 | * NOTE: Keep this in sync with libsyscall/os/tsd.h, specifically _os_cpu_number() | |
| 36 | */ | |
| 1c79356b | 37 | |
| 0a7de745 A |
38 | #define MACHDEP_CTHREAD_ALIGNMENT (1 << 3) |
| 39 | #define MACHDEP_CPUNUM_MASK (MACHDEP_CTHREAD_ALIGNMENT - 1) | |
| 40 | #define MACHDEP_CTHREAD_MASK (~MACHDEP_CPUNUM_MASK) | |
| 91447636 | 41 | |
| 5ba3f43e | 42 | #endif /* _MACHDEP_INTERNAL_H_ */ |