/*-
 * Copyright (c) 2001 Jake Burkholder.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 *
 * $FreeBSD$
 */

#ifndef	_MACHINE_CPU_H_
#define	_MACHINE_CPU_H_

#include <machine/frame.h>

#define	CLKF_USERMODE(cfp)	(0)
#define	CLKF_PC(cfp)		((cfp)->cf_tf.tf_tpc)

#define	TRAPF_PC(tfp)		((tfp)->tf_tpc)
#define	TRAPF_USERMODE(tfp)	(0)

#define	cpu_getstack(p)		((p)->p_frame->tf_sp)
#define	cpu_setstack(p, sp)	((p)->p_frame->tf_sp = (sp))

/*
 * Arrange to handle pending profiling ticks before returning to user mode.
 */
#define	need_proftick(p) do {						\
	mtx_lock_spin(&sched_lock);					\
	(p)->p_sflag |= PS_OWEUPC;					\
	aston(p);							\
	mtx_unlock_spin(&sched_lock);					\
} while (0)

/*
 * CTL_MACHDEP definitions.
 */
#define CPU_CONSDEV		1	/* dev_t: console terminal device */
#define	CPU_ADJKERNTZ		2	/* int:	timezone offset	(seconds) */
#define	CPU_DISRTCSET		3	/* int: disable resettodr() call */
#define CPU_BOOTINFO		4	/* struct: bootinfo */
#define	CPU_WALLCLOCK		5	/* int:	indicates wall CMOS clock */
#define	CPU_MAXID		6	/* number of valid machdep ids */

#define CTL_MACHDEP_NAMES { \
	{ 0, 0 }, \
	{ "console_device", CTLTYPE_STRUCT }, \
	{ "adjkerntz", CTLTYPE_INT }, \
	{ "disable_rtc_set", CTLTYPE_INT }, \
	{ "bootinfo", CTLTYPE_STRUCT }, \
	{ "wall_cmos_clock", CTLTYPE_INT }, \
}

void	fork_trampoline(void);

static __inline u_int64_t
get_cyclecount(void)
{

	return (rd(tick));
}

#endif /* !_MACHINE_CPU_H_ */