pcpu.h revision 87702
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: head/sys/sparc64/include/pcpu.h 87702 2001-12-11 23:33:44Z jhb $ 28 */ 29 30#ifndef _MACHINE_PCPU_H_ 31#define _MACHINE_PCPU_H_ 32 33#ifdef _KERNEL 34 35#include <machine/frame.h> 36#include <machine/intr_machdep.h> 37 38#define ALT_STACK_SIZE 128 39 40/* 41 * Inside the kernel, the globally reserved register g7 is used to 42 * point at the globaldata structure. 43 */ 44#define PCPU_MD_FIELDS \ 45 struct intr_queue pc_iq; /* interrupt queuq */ \ 46 u_long pc_alt_stack[ALT_STACK_SIZE]; /* alt global stack */ \ 47 u_int pc_wp_insn; /* watch point support */ \ 48 u_long pc_wp_pstate; \ 49 u_long pc_wp_va; \ 50 int pc_wp_mask 51 52struct pcpu; 53 54register struct pcpu *pcpup __asm__("%g7"); 55 56#define PCPU_GET(member) (pcpup->pc_ ## member) 57#define PCPU_PTR(member) (&pcpup->pc_ ## member) 58#define PCPU_SET(member,value) (pcpup->pc_ ## member = (value)) 59 60#endif /* _KERNEL */ 61 62#endif /* !_MACHINE_PCPU_H_ */ 63