pcpu.h revision 132068 
1/*-
2 * Copyright (c) 1999 Luoqi Chen <luoqi@freebsd.org>
3 * Copyright (c) Peter Wemm <peter@netplex.com.au>
4 * All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 * 1. Redistributions of source code must retain the above copyright
10 *    notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 *    notice, this list of conditions and the following disclaimer in the
13 *    documentation and/or other materials provided with the distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
18 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
25 * SUCH DAMAGE.
26 *
27 * $FreeBSD: head/sys/powerpc/include/pcpu.h 132068 2004-07-12 22:18:02Z grehan $
28 */
29
30#ifndef	_MACHINE_PCPU_H_
31#define	_MACHINE_PCPU_H_
32
33#ifdef _KERNEL
34#include <machine/cpufunc.h>
35
36struct pmap;
37#define	CPUSAVE_LEN	8
38
39#define	PCPU_MD_FIELDS							\
40	int		pc_inside_intr;					\
41	struct pmap	*pc_curpmap;		/* current pmap */	\
42        struct thread   *pc_fputhread;          /* current fpu user */  \
43	register_t	pc_tempsave[CPUSAVE_LEN];			\
44	register_t	pc_disisave[CPUSAVE_LEN];			\
45	register_t	pc_dbsave[CPUSAVE_LEN];
46
47/* Definitions for register offsets within the exception tmp save areas */
48#define	CPUSAVE_R28	0		/* where r28 gets saved */
49#define	CPUSAVE_R29	1		/* where r29 gets saved */
50#define	CPUSAVE_R30	2		/* where r30 gets saved */
51#define	CPUSAVE_R31	3		/* where r31 gets saved */
52#define	CPUSAVE_DAR	4		/* where SPR_DAR gets saved */
53#define	CPUSAVE_DSISR	5		/* where SPR_DSISR gets saved */
54#define	CPUSAVE_SRR0	6		/* where SRR0 gets saved */
55#define	CPUSAVE_SRR1	7		/* where SRR1 gets saved */
56
57#define PCPUP	((struct pcpu *) powerpc_get_pcpup())
58
59#define	PCPU_GET(member)	(PCPUP->pc_ ## member)
60#define	PCPU_PTR(member)	(&PCPUP->pc_ ## member)
61#define	PCPU_SET(member,value)	(PCPUP->pc_ ## member = (value))
62
63#endif	/* _KERNEL */
64
65#endif	/* !_MACHINE_PCPU_H_ */
66