/* * Copyright (c) 2017 Apple Inc. All rights reserved. * * @APPLE_OSREFERENCE_LICENSE_HEADER_START@ * * This file contains Original Code and/or Modifications of Original Code * as defined in and that are subject to the Apple Public Source License * Version 2.0 (the 'License'). You may not use this file except in * compliance with the License. The rights granted to you under the License * may not be used to create, or enable the creation or redistribution of, * unlawful or unlicensed copies of an Apple operating system, or to * circumvent, violate, or enable the circumvention or violation of, any * terms of an Apple operating system software license agreement. * * Please obtain a copy of the License at * http://www.opensource.apple.com/apsl/ and read it before using this file. * * The Original Code and all software distributed under the License are * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. * Please see the License for the specific language governing rights and * limitations under the License. * * @APPLE_OSREFERENCE_LICENSE_HEADER_END@ */ #ifndef _MACHDEP_INTERNAL_H_ #define _MACHDEP_INTERNAL_H_ /* We cache the current cthread pointer in the high bits of TPIDRRO_EL0 and * the current CPU number in the low bits. The cthread pointer must be aligned * sufficiently that the maximum CPU number will fit. * * NOTE: Keep this in sync with libsyscall/os/tsd.h, specifically _os_cpu_number() */ #define MACHDEP_CTHREAD_ALIGNMENT (1 << 3) #define MACHDEP_CPUNUM_MASK (MACHDEP_CTHREAD_ALIGNMENT - 1) #define MACHDEP_CTHREAD_MASK (~MACHDEP_CPUNUM_MASK) #endif /* _MACHDEP_INTERNAL_H_ */