1 /*- 2 * Copyright (c) 1999 Luoqi Chen <luoqi@freebsd.org> 3 * Copyright (c) 2015-2016 Ruslan Bukin <br@bsdpad.com> 4 * All rights reserved. 5 * 6 * Portions of this software were developed by SRI International and the 7 * University of Cambridge Computer Laboratory under DARPA/AFRL contract 8 * FA8750-10-C-0237 ("CTSRD"), as part of the DARPA CRASH research programme. 9 * 10 * Portions of this software were developed by the University of Cambridge 11 * Computer Laboratory as part of the CTSRD Project, with support from the 12 * UK Higher Education Innovation Fund (HEIF). 13 * 14 * Redistribution and use in source and binary forms, with or without 15 * modification, are permitted provided that the following conditions 16 * are met: 17 * 1. Redistributions of source code must retain the above copyright 18 * notice, this list of conditions and the following disclaimer. 19 * 2. Redistributions in binary form must reproduce the above copyright 20 * notice, this list of conditions and the following disclaimer in the 21 * documentation and/or other materials provided with the distribution. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33 * SUCH DAMAGE. 34 * 35 * from: FreeBSD: src/sys/i386/include/globaldata.h,v 1.27 2001/04/27 36 * $FreeBSD$ 37 */ 38 39 #ifndef _MACHINE_PCPU_H_ 40 #define _MACHINE_PCPU_H_ 41 42 #include <machine/cpu.h> 43 #include <machine/cpufunc.h> 44 45 #define ALT_STACK_SIZE 128 46 47 /* Keep in sync with db_show_mdpcpu() */ 48 #define PCPU_MD_FIELDS \ 49 struct pmap *pc_curpmap; /* Currently active pmap */ \ 50 uint32_t pc_pending_ipis; /* IPIs pending to this CPU */ \ 51 uint32_t pc_hart; /* Hart ID */ \ 52 char __pad[56] /* Pad to factor of PAGE_SIZE */ 53 54 #ifdef _KERNEL 55 56 struct pcb; 57 struct pcpu; 58 59 static inline struct pcpu * 60 get_pcpu(void) 61 { 62 struct pcpu *pcpu; 63 64 __asm __volatile("mv %0, tp" : "=&r"(pcpu)); 65 66 return (pcpu); 67 } 68 69 static inline struct thread * 70 get_curthread(void) 71 { 72 struct thread *td; 73 74 __asm __volatile("ld %0, 0(tp)" : "=&r"(td)); 75 76 return (td); 77 } 78 79 #define curthread get_curthread() 80 81 #define PCPU_GET(member) (get_pcpu()->pc_ ## member) 82 #define PCPU_ADD(member, value) (get_pcpu()->pc_ ## member += (value)) 83 #define PCPU_PTR(member) (&get_pcpu()->pc_ ## member) 84 #define PCPU_SET(member,value) (get_pcpu()->pc_ ## member = (value)) 85 86 #endif /* _KERNEL */ 87 88 #endif /* !_MACHINE_PCPU_H_ */ 89