cpu.h revision 77957 
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 77957 2001-06-10 02:39:37Z 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	cpu_swapout(p)
48#define	cpu_number()		0
49
50extern void delay __P((unsigned));
51#define	DELAY(n)		delay(n)
52
53extern int want_resched;
54extern int astpending;
55
56#define	need_proftick(p)	((p)->p_flag |= PS_OWEUPC, astpending = 1)
57
58extern char bootpath[];
59
60#if defined(_KERNEL) || defined(_STANDALONE)
61#define	CACHELINESIZE	32
62#endif
63
64extern void __syncicache __P((void *, int));
65
66/*
67 * CTL_MACHDEP definitions.
68 */
69#define	CPU_CACHELINE	1
70#define	CPU_MAXID	2
71#define CPU_CONSDEV	1
72
73#define	CTL_MACHDEP_NAMES { \
74	{ 0, 0 }, \
75	{ "cachelinesize", CTLTYPE_INT }, \
76}
77
78static __inline u_int64_t
79get_cyclecount(void)
80{
81	u_int32_t upper, lower;
82	u_int64_t time;
83
84	__asm __volatile(
85		"mftb %0\n"
86		"mftbu %1"
87		: "=r" (lower), "=r" (upper));
88
89	time = (u_int64_t)upper;
90	time = (time << 32) + lower;
91	return (time);
92}
93
94#define	cpu_getstack(p)		((p)->p_md.md_regs[1])
95
96void	savectx __P((struct pcb *));
97
98#endif	/* _MACHINE_CPU_H_ */
99