1 /*- 2 * Copyright (c) 1999 Luoqi Chen <luoqi@freebsd.org> 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 * 26 * from: FreeBSD: src/sys/i386/include/globaldata.h,v 1.27 2001/04/27 27 * $FreeBSD$ 28 */ 29 30 #ifndef _MACHINE_PCPU_H_ 31 #define _MACHINE_PCPU_H_ 32 33 #include <machine/cpu.h> 34 #include <machine/cpufunc.h> 35 36 #define ALT_STACK_SIZE 128 37 38 typedef int (*pcpu_bp_harden)(void); 39 40 #define PCPU_MD_FIELDS \ 41 u_int pc_acpi_id; /* ACPI CPU id */ \ 42 u_int pc_midr; /* stored MIDR value */ \ 43 uint64_t pc_clock; \ 44 pcpu_bp_harden pc_bp_harden; \ 45 char __pad[233] 46 47 #ifdef _KERNEL 48 49 struct pcb; 50 struct pcpu; 51 52 static inline struct pcpu * 53 get_pcpu(void) 54 { 55 struct pcpu *pcpu; 56 57 __asm __volatile("mov %0, x18" : "=&r"(pcpu)); 58 return (pcpu); 59 } 60 61 static inline struct thread * 62 get_curthread(void) 63 { 64 struct thread *td; 65 66 __asm __volatile("ldr %0, [x18]" : "=&r"(td)); 67 return (td); 68 } 69 70 #define curthread get_curthread() 71 72 #define PCPU_GET(member) (get_pcpu()->pc_ ## member) 73 #define PCPU_ADD(member, value) (get_pcpu()->pc_ ## member += (value)) 74 #define PCPU_INC(member) PCPU_ADD(member, 1) 75 #define PCPU_PTR(member) (&get_pcpu()->pc_ ## member) 76 #define PCPU_SET(member,value) (get_pcpu()->pc_ ## member = (value)) 77 78 #endif /* _KERNEL */ 79 80 #endif /* !_MACHINE_PCPU_H_ */ 81