cpu.h revision 158445 
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 158445 2006-05-11 17:29:25Z phk $
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	TRAPF_USERMODE(frame)	(((frame)->srr1 & PSL_PR) != 0)
43#define	TRAPF_PC(frame)		((frame)->srr0)
44
45#define	cpu_swapout(p)
46#define	cpu_number()		0
47
48#if defined(_KERNEL) || defined(_STANDALONE)
49#define	CACHELINESIZE	32
50#endif
51
52extern void __syncicache(void *, int);
53
54/*
55 * CTL_MACHDEP definitions.
56 */
57#define	CPU_CACHELINE	1
58
59static __inline u_int64_t
60get_cyclecount(void)
61{
62	u_int32_t _upper, _lower;
63	u_int64_t _time;
64
65	__asm __volatile(
66		"mftb %0\n"
67		"mftbu %1"
68		: "=r" (_lower), "=r" (_upper));
69
70	_time = (u_int64_t)_upper;
71	_time = (_time << 32) + _lower;
72	return (_time);
73}
74
75#define	cpu_getstack(td)	((td)->td_frame->fixreg[1])
76#define	cpu_spinwait()		/* nothing */
77
78void	cpu_halt(void);
79void	cpu_reset(void);
80void	fork_trampoline(void);
81void	swi_vm(void *);
82
83/* XXX the following should not be here. */
84void	savectx(struct pcb *);
85int	kcopy(const void *, void *, size_t);
86
87#endif	/* _MACHINE_CPU_H_ */
88