1a2a0f906SKonstantin Belousov /*- 24d846d26SWarner Losh * SPDX-License-Identifier: BSD-2-Clause 3a2a0f906SKonstantin Belousov * 4a2a0f906SKonstantin Belousov * Copyright (c) 2019 The FreeBSD Foundation 5a2a0f906SKonstantin Belousov * 6a2a0f906SKonstantin Belousov * This software was developed by Konstantin Belousov <kib@FreeBSD.org> 7a2a0f906SKonstantin Belousov * under sponsorship from the FreeBSD Foundation. 8a2a0f906SKonstantin Belousov * 9a2a0f906SKonstantin Belousov * Redistribution and use in source and binary forms, with or without 10a2a0f906SKonstantin Belousov * modification, are permitted provided that the following conditions 11a2a0f906SKonstantin Belousov * are met: 12a2a0f906SKonstantin Belousov * 1. Redistributions of source code must retain the above copyright 13a2a0f906SKonstantin Belousov * notice, this list of conditions and the following disclaimer. 14a2a0f906SKonstantin Belousov * 2. Redistributions in binary form must reproduce the above copyright 15a2a0f906SKonstantin Belousov * notice, this list of conditions and the following disclaimer in the 16a2a0f906SKonstantin Belousov * documentation and/or other materials provided with the distribution. 17a2a0f906SKonstantin Belousov * 18a2a0f906SKonstantin Belousov * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 19a2a0f906SKonstantin Belousov * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 20a2a0f906SKonstantin Belousov * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 21a2a0f906SKonstantin Belousov * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 22a2a0f906SKonstantin Belousov * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 23a2a0f906SKonstantin Belousov * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 24a2a0f906SKonstantin Belousov * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 25a2a0f906SKonstantin Belousov * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 26a2a0f906SKonstantin Belousov * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 27a2a0f906SKonstantin Belousov * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 28a2a0f906SKonstantin Belousov * SUCH DAMAGE. 29a2a0f906SKonstantin Belousov */ 30a2a0f906SKonstantin Belousov 31a2a0f906SKonstantin Belousov #ifndef _MACHINE_PCPU_AUX_H_ 32a2a0f906SKonstantin Belousov #define _MACHINE_PCPU_AUX_H_ 33a2a0f906SKonstantin Belousov 34a2a0f906SKonstantin Belousov #ifndef _KERNEL 35a2a0f906SKonstantin Belousov #error "Not for userspace" 36a2a0f906SKonstantin Belousov #endif 37a2a0f906SKonstantin Belousov 38a2a0f906SKonstantin Belousov #ifndef _SYS_PCPU_H_ 39a2a0f906SKonstantin Belousov #error "Do not include machine/pcpu_aux.h directly" 40a2a0f906SKonstantin Belousov #endif 41a2a0f906SKonstantin Belousov 42a2a0f906SKonstantin Belousov /* Required for counters(9) to work on x86. */ 43a2a0f906SKonstantin Belousov _Static_assert(sizeof(struct pcpu) == UMA_PCPU_ALLOC_SIZE, "fix pcpu size"); 44a2a0f906SKonstantin Belousov 45a2a0f906SKonstantin Belousov extern struct pcpu __pcpu[]; 46a2a0f906SKonstantin Belousov 47a2a0f906SKonstantin Belousov static __inline __pure2 struct thread * 48a2a0f906SKonstantin Belousov __curthread(void) 49a2a0f906SKonstantin Belousov { 50a2a0f906SKonstantin Belousov struct thread *td; 51a2a0f906SKonstantin Belousov 52*ab92c99aSRyan Libby __asm("movl %%fs:%c1,%0" : "=r" (td) 53*ab92c99aSRyan Libby : "i" (offsetof(struct pcpu, pc_curthread))); 54a2a0f906SKonstantin Belousov return (td); 55a2a0f906SKonstantin Belousov } 56a2a0f906SKonstantin Belousov #define curthread (__curthread()) 57a2a0f906SKonstantin Belousov 58a2a0f906SKonstantin Belousov static __inline __pure2 struct pcb * 59a2a0f906SKonstantin Belousov __curpcb(void) 60a2a0f906SKonstantin Belousov { 61a2a0f906SKonstantin Belousov struct pcb *pcb; 62a2a0f906SKonstantin Belousov 63*ab92c99aSRyan Libby __asm("movl %%fs:%c1,%0" : "=r" (pcb) 64*ab92c99aSRyan Libby : "i" (offsetof(struct pcpu, pc_curpcb))); 65a2a0f906SKonstantin Belousov return (pcb); 66a2a0f906SKonstantin Belousov } 67a2a0f906SKonstantin Belousov #define curpcb (__curpcb()) 68a2a0f906SKonstantin Belousov 69a2a0f906SKonstantin Belousov #endif /* _MACHINE_PCPU_AUX_H_ */ 70