/* * Copyright (c) 2007 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@ */ /* * Copyright (c) 1992 NeXT Computer, Inc. * * Machine dependent kernel calls. * * HISTORY * * 17 June 1992 ? at NeXT * Created. */ #include <kern/thread.h> #include <mach/mach_types.h> #include <arm/machdep_call.h> #if __arm64__ #include <arm64/machine_machdep.h> #endif extern kern_return_t kern_invalid(void); uintptr_t get_tpidrro(void) { uintptr_t uthread; #if __arm__ uthread = __builtin_arm_mrc(15, 0, 13, 0, 3); // TPIDRURO #else __asm__ volatile ("mrs %0, TPIDRRO_EL0" : "=r" (uthread)); #endif return uthread; } void set_tpidrro(uintptr_t uthread) { #if __arm__ __builtin_arm_mcr(15, 0, uthread, 13, 0, 3); // TPIDRURO #else __asm__ volatile ("msr TPIDRRO_EL0, %0" : : "r" (uthread)); #endif } kern_return_t thread_set_cthread_self(vm_address_t self) { return machine_thread_set_tsd_base(current_thread(), self); } vm_address_t thread_get_cthread_self(void) { uintptr_t self; self = get_tpidrro(); #if __arm__ self &= ~3; assert( self == current_thread()->machine.cthread_self); return (kern_return_t) current_thread()->machine.cthread_self; #else self &= MACHDEP_CTHREAD_MASK; assert( self == current_thread()->machine.cthread_self); return self; #endif }