pcpu.h revision 137228 
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/arm/include/pcpu.h 137228 2004-11-04 19:19:44Z cognet $
28 */
29
30#ifndef	_MACHINE_PCPU_H_
31#define	_MACHINE_PCPU_H_
32
33#ifdef _KERNEL
34
35#include <machine/asmacros.h>
36#include <machine/frame.h>
37
38#define	ALT_STACK_SIZE	128
39
40struct vmspace;
41
42/*
43 * Inside the kernel, the globally reserved register g7 is used to
44 * point at the globaldata structure.
45 */
46#define	PCPU_MD_FIELDS							\
47	struct pcup *pc_prvspace;
48
49struct pcb;
50struct pcpu;
51
52extern struct pcpu *pcpup;
53extern struct pcpu __pcpu;
54
55#define	PCPU_GET(member)	(__pcpu.pc_ ## member)
56#define	PCPU_PTR(member)	(&__pcpu.pc_ ## member)
57#define	PCPU_SET(member,value)	(__pcpu.pc_ ## member = (value))
58
59#endif	/* _KERNEL */
60
61#endif	/* !_MACHINE_PCPU_H_ */
62