cpu.h revision 94751 
167Ssundar/*
267Ssundar * Copyright (C) 1995-1997 Wolfgang Solfrank.
3970Sattila * Copyright (C) 1995-1997 TooLs GmbH.
467Ssundar * All rights reserved.
567Ssundar *
667Ssundar * Redistribution and use in source and binary forms, with or without
7970Sattila * modification, are permitted provided that the following conditions
867Ssundar * are met:
967Ssundar * 1. Redistributions of source code must retain the above copyright
10970Sattila *    notice, this list of conditions and the following disclaimer.
1167Ssundar * 2. Redistributions in binary form must reproduce the above copyright
1267Ssundar *    notice, this list of conditions and the following disclaimer in the
1367Ssundar *    documentation and/or other materials provided with the distribution.
14970Sattila * 3. All advertising materials mentioning features or use of this software
1567Ssundar *    must display the following acknowledgement:
1667Ssundar *	This product includes software developed by TooLs GmbH.
1767Ssundar * 4. The name of TooLs GmbH may not be used to endorse or promote products
18970Sattila *    derived from this software without specific prior written permission.
1967Ssundar *
2067Ssundar * THIS SOFTWARE IS PROVIDED BY TOOLS GMBH ``AS IS'' AND ANY EXPRESS OR
2167Ssundar * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
2267Ssundar * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
2367Ssundar * IN NO EVENT SHALL TOOLS GMBH BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
2467Ssundar * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
2567Ssundar * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
2667Ssundar * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
2767Ssundar * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
2867Ssundar * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
2967Ssundar * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
3067Ssundar *
3167Ssundar *	$NetBSD: cpu.h,v 1.11 2000/05/26 21:19:53 thorpej Exp $
3267Ssundar * $FreeBSD: head/sys/powerpc/include/cpu.h 94751 2002-04-15 12:02:43Z benno $
3367Ssundar */
3467Ssundar
3567Ssundar#ifndef _MACHINE_CPU_H_
3667Ssundar#define	_MACHINE_CPU_H_
3767Ssundar
3867Ssundar#include <machine/frame.h>
3967Ssundar#include <machine/pcb.h>
4067Ssundar#include <machine/psl.h>
4167Ssundar
4267Ssundar#define	CLKF_USERMODE(frame)	(((frame)->srr1 & PSL_PR) != 0)
4367Ssundar#define	CLKF_BASEPRI(frame)	((frame)->pri == 0)
4467Ssundar#define	CLKF_PC(frame)		((frame)->srr0)
4567Ssundar#define	CLKF_INTR(frame)	((frame)->depth > 0)
4667Ssundar
4767Ssundar#define	TRAPF_USERMODE(frame)	(((frame)->srr1 & PSL_PR) != 0)
4867Ssundar#define	TRAPF_PC(frame)		((frame)->srr0)
4967Ssundar
5067Ssundar#define	cpu_swapout(p)
51#define	cpu_number()		0
52
53#define	DELAY(n)		delay(n)
54
55extern char bootpath[];
56
57#if defined(_KERNEL) || defined(_STANDALONE)
58#define	CACHELINESIZE	32
59#endif
60
61extern void __syncicache(void *, int);
62
63/*
64 * CTL_MACHDEP definitions.
65 */
66#define	CPU_CACHELINE	1
67#define	CPU_MAXID	2
68#define CPU_CONSDEV	1
69
70#define	CTL_MACHDEP_NAMES { \
71	{ 0, 0 }, \
72	{ "cachelinesize", CTLTYPE_INT }, \
73}
74
75static __inline u_int64_t
76get_cyclecount(void)
77{
78	u_int32_t upper, lower;
79	u_int64_t time;
80
81	__asm __volatile(
82		"mftb %0\n"
83		"mftbu %1"
84		: "=r" (lower), "=r" (upper));
85
86	time = (u_int64_t)upper;
87	time = (time << 32) + lower;
88	return (time);
89}
90
91#define	cpu_getstack(td)	((td)->td_frame->fixreg[1])
92
93void	savectx(struct pcb *);
94void	fork_trampoline(void);
95
96#endif	/* _MACHINE_CPU_H_ */
97