1*a9643ea8Slogwang /*- 2*a9643ea8Slogwang * Copyright (c) 1999 Luoqi Chen <[email protected]> 3*a9643ea8Slogwang * All rights reserved. 4*a9643ea8Slogwang * 5*a9643ea8Slogwang * Redistribution and use in source and binary forms, with or without 6*a9643ea8Slogwang * modification, are permitted provided that the following conditions 7*a9643ea8Slogwang * are met: 8*a9643ea8Slogwang * 1. Redistributions of source code must retain the above copyright 9*a9643ea8Slogwang * notice, this list of conditions and the following disclaimer. 10*a9643ea8Slogwang * 2. Redistributions in binary form must reproduce the above copyright 11*a9643ea8Slogwang * notice, this list of conditions and the following disclaimer in the 12*a9643ea8Slogwang * documentation and/or other materials provided with the distribution. 13*a9643ea8Slogwang * 14*a9643ea8Slogwang * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15*a9643ea8Slogwang * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16*a9643ea8Slogwang * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17*a9643ea8Slogwang * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18*a9643ea8Slogwang * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19*a9643ea8Slogwang * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20*a9643ea8Slogwang * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21*a9643ea8Slogwang * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22*a9643ea8Slogwang * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23*a9643ea8Slogwang * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24*a9643ea8Slogwang * SUCH DAMAGE. 25*a9643ea8Slogwang * 26*a9643ea8Slogwang * from: FreeBSD: src/sys/i386/include/globaldata.h,v 1.27 2001/04/27 27*a9643ea8Slogwang * $FreeBSD$ 28*a9643ea8Slogwang */ 29*a9643ea8Slogwang 30*a9643ea8Slogwang #ifndef _MACHINE_PCPU_H_ 31*a9643ea8Slogwang #define _MACHINE_PCPU_H_ 32*a9643ea8Slogwang 33*a9643ea8Slogwang #include <machine/cpu.h> 34*a9643ea8Slogwang #include <machine/cpufunc.h> 35*a9643ea8Slogwang 36*a9643ea8Slogwang #define ALT_STACK_SIZE 128 37*a9643ea8Slogwang 38*a9643ea8Slogwang #define PCPU_MD_FIELDS \ 39*a9643ea8Slogwang u_int pc_acpi_id; /* ACPI CPU id */ \ 40*a9643ea8Slogwang u_int pc_midr; /* stored MIDR value */ \ 41*a9643ea8Slogwang char __pad[121] 42*a9643ea8Slogwang 43*a9643ea8Slogwang #ifdef _KERNEL 44*a9643ea8Slogwang 45*a9643ea8Slogwang struct pcb; 46*a9643ea8Slogwang struct pcpu; 47*a9643ea8Slogwang 48*a9643ea8Slogwang static inline struct pcpu * 49*a9643ea8Slogwang get_pcpu(void) 50*a9643ea8Slogwang { 51*a9643ea8Slogwang struct pcpu *pcpu; 52*a9643ea8Slogwang 53*a9643ea8Slogwang __asm __volatile("mov %0, x18" : "=&r"(pcpu)); 54*a9643ea8Slogwang return (pcpu); 55*a9643ea8Slogwang } 56*a9643ea8Slogwang 57*a9643ea8Slogwang static inline struct thread * 58*a9643ea8Slogwang get_curthread(void) 59*a9643ea8Slogwang { 60*a9643ea8Slogwang struct thread *td; 61*a9643ea8Slogwang 62*a9643ea8Slogwang __asm __volatile("ldr %0, [x18]" : "=&r"(td)); 63*a9643ea8Slogwang return (td); 64*a9643ea8Slogwang } 65*a9643ea8Slogwang 66*a9643ea8Slogwang #define curthread get_curthread() 67*a9643ea8Slogwang 68*a9643ea8Slogwang #define PCPU_GET(member) (get_pcpu()->pc_ ## member) 69*a9643ea8Slogwang #define PCPU_ADD(member, value) (get_pcpu()->pc_ ## member += (value)) 70*a9643ea8Slogwang #define PCPU_INC(member) PCPU_ADD(member, 1) 71*a9643ea8Slogwang #define PCPU_PTR(member) (&get_pcpu()->pc_ ## member) 72*a9643ea8Slogwang #define PCPU_SET(member,value) (get_pcpu()->pc_ ## member = (value)) 73*a9643ea8Slogwang 74*a9643ea8Slogwang #endif /* _KERNEL */ 75*a9643ea8Slogwang 76*a9643ea8Slogwang #endif /* !_MACHINE_PCPU_H_ */ 77