cpu.h revision 84976 
1/*
2 * Copyright (C) 1995-1997 Wolfgang Solfrank.
3 * Copyright (C) 1995-1997 TooLs GmbH.
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 * 3. All advertising materials mentioning features or use of this software
15 *    must display the following acknowledgement:
16 *	This product includes software developed by TooLs GmbH.
17 * 4. The name of TooLs GmbH may not be used to endorse or promote products
18 *    derived from this software without specific prior written permission.
19 *
20 * THIS SOFTWARE IS PROVIDED BY TOOLS GMBH ``AS IS'' AND ANY EXPRESS OR
21 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
22 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
23 * IN NO EVENT SHALL TOOLS GMBH BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
24 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
25 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
26 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
27 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
28 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
29 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30 *
31 *	$NetBSD: cpu.h,v 1.11 2000/05/26 21:19:53 thorpej Exp $
32 * $FreeBSD: head/sys/powerpc/include/cpu.h 84976 2001-10-15 12:23:10Z benno $
33 */
34
35#ifndef _MACHINE_CPU_H_
36#define	_MACHINE_CPU_H_
37
38#include <machine/frame.h>
39#include <machine/pcb.h>
40#include <machine/psl.h>
41
42#define	CLKF_USERMODE(frame)	(((frame)->srr1 & PSL_PR) != 0)
43#define	CLKF_BASEPRI(frame)	((frame)->pri == 0)
44#define	CLKF_PC(frame)		((frame)->srr0)
45#define	CLKF_INTR(frame)	((frame)->depth > 0)
46
47#define	TRAPF_USERMODE(frame)	((frame)->srr1 & PSL_PR) != 0)
48#define	TRAPF_PC(frame)		((frame)->srr0)
49
50#define	cpu_swapout(p)
51#define	cpu_number()		0
52
53void	delay(int);
54#define	DELAY(n)		delay(n)
55
56extern int want_resched;
57extern int astpending;
58
59extern char bootpath[];
60
61#if defined(_KERNEL) || defined(_STANDALONE)
62#define	CACHELINESIZE	32
63#endif
64
65extern void __syncicache __P((void *, int));
66
67/*
68 * CTL_MACHDEP definitions.
69 */
70#define	CPU_CACHELINE	1
71#define	CPU_MAXID	2
72#define CPU_CONSDEV	1
73
74#define	CTL_MACHDEP_NAMES { \
75	{ 0, 0 }, \
76	{ "cachelinesize", CTLTYPE_INT }, \
77}
78
79static __inline u_int64_t
80get_cyclecount(void)
81{
82	u_int32_t upper, lower;
83	u_int64_t time;
84
85	__asm __volatile(
86		"mftb %0\n"
87		"mftbu %1"
88		: "=r" (lower), "=r" (upper));
89
90	time = (u_int64_t)upper;
91	time = (time << 32) + lower;
92	return (time);
93}
94
95#define	cpu_getstack(td)	((td)->td_frame->fixreg[1])
96
97void	savectx __P((struct pcb *));
98void	fork_trampoline(void);
99
100#endif	/* _MACHINE_CPU_H_ */
101