pcpu.h revision 181875
1129198Scognet/*- 2129198Scognet * Copyright (c) 1999 Luoqi Chen <luoqi@freebsd.org> 3129198Scognet * All rights reserved. 4129198Scognet * 5129198Scognet * Redistribution and use in source and binary forms, with or without 6129198Scognet * modification, are permitted provided that the following conditions 7129198Scognet * are met: 8129198Scognet * 1. Redistributions of source code must retain the above copyright 9129198Scognet * notice, this list of conditions and the following disclaimer. 10129198Scognet * 2. Redistributions in binary form must reproduce the above copyright 11129198Scognet * notice, this list of conditions and the following disclaimer in the 12129198Scognet * documentation and/or other materials provided with the distribution. 13129198Scognet * 14129198Scognet * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15129198Scognet * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16129198Scognet * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17129198Scognet * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18129198Scognet * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19129198Scognet * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20129198Scognet * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21129198Scognet * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22129198Scognet * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23129198Scognet * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24129198Scognet * SUCH DAMAGE. 25129198Scognet * 26129198Scognet * from: FreeBSD: src/sys/i386/include/globaldata.h,v 1.27 2001/04/27 27129198Scognet * $FreeBSD: head/sys/arm/include/pcpu.h 181875 2008-08-19 19:53:52Z jhb $ 28129198Scognet */ 29129198Scognet 30129198Scognet#ifndef _MACHINE_PCPU_H_ 31129198Scognet#define _MACHINE_PCPU_H_ 32129198Scognet 33129198Scognet#ifdef _KERNEL 34129198Scognet 35129198Scognet#include <machine/frame.h> 36129198Scognet 37129198Scognet#define ALT_STACK_SIZE 128 38129198Scognet 39129198Scognetstruct vmspace; 40129198Scognet 41181875Sjhb#endif /* _KERNEL */ 42181875Sjhb 43129198Scognet/* 44129198Scognet * Inside the kernel, the globally reserved register g7 is used to 45129198Scognet * point at the globaldata structure. 46129198Scognet */ 47129198Scognet#define PCPU_MD_FIELDS \ 48129198Scognet struct pcup *pc_prvspace; 49129198Scognet 50181875Sjhb#ifdef _KERNEL 51181875Sjhb 52129198Scognetstruct pcb; 53129198Scognetstruct pcpu; 54129198Scognet 55129198Scognetextern struct pcpu *pcpup; 56137228Scognetextern struct pcpu __pcpu; 57129198Scognet 58137228Scognet#define PCPU_GET(member) (__pcpu.pc_ ## member) 59167429Salc 60167429Salc/* 61167429Salc * XXX The implementation of this operation should be made atomic 62167429Salc * with respect to preemption. 63167429Salc */ 64170291Sattilio#define PCPU_ADD(member, value) (__pcpu.pc_ ## member += (value)) 65170388Sjeff#define PCPU_INC(member) PCPU_ADD(member, 1) 66137228Scognet#define PCPU_PTR(member) (&__pcpu.pc_ ## member) 67137228Scognet#define PCPU_SET(member,value) (__pcpu.pc_ ## member = (value)) 68129198Scognet 69129198Scognet#endif /* _KERNEL */ 70129198Scognet 71129198Scognet#endif /* !_MACHINE_PCPU_H_ */ 72