[dragonfly.git] / sys / cpu / x86_64 / include / cpu.h

/*-
 * Copyright (c) 1990 The Regents of the University of California.
 * All rights reserved.
 *
 * This code is derived from software contributed to Berkeley by
 * William Jolitz.
 *
 * 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.
 * 3. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *	This product includes software developed by the University of
 *	California, Berkeley and its contributors.
 * 4. Neither the name of the University nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 REGENTS 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.
 *
 *	from: @(#)cpu.h	5.4 (Berkeley) 5/9/91
 * $FreeBSD: src/sys/i386/include/cpu.h,v 1.43.2.2 2001/06/15 09:37:57 scottl Exp $
 */

#ifndef _CPU_CPU_H_
#define	_CPU_CPU_H_

/*
 * Definitions unique to x86_64 cpu support.
 */
#ifndef _CPU_PSL_H_
#include <machine/psl.h>
#endif
#ifndef _CPU_FRAME_H_
#include <machine/frame.h>
#endif
#ifndef _CPU_SEGMENTS_H_
#include <machine/segments.h>
#endif

/*
 * definitions of cpu-dependent requirements
 * referenced in generic code
 */

#define	cpu_exec(p)	/* nothing */
#define cpu_swapin(p)	/* nothing */
#define cpu_setstack(lp, ap)		((lp)->lwp_md.md_regs[SP] = (ap))

#define CLKF_INTR(intr_nest)	((intr_nest) > 1)
#define CLKF_INTR_TD(td)	((td)->td_flags & TDF_INTTHREAD)
#define	CLKF_PC(framep)		((framep)->if_rip)

/*
 * Preempt the current process if in interrupt from user mode,
 * or after the current trap/syscall if in system mode.
 *
 * We do not have to use a locked bus cycle but we do have to use an
 * atomic instruction because an interrupt on the local cpu can modify
 * the gd_reqflags field.
 */
#define	need_lwkt_resched()	\
    atomic_set_int(&mycpu->gd_reqflags, RQF_AST_LWKT_RESCHED)
#define	need_user_resched()	\
    atomic_set_int(&mycpu->gd_reqflags, RQF_AST_USER_RESCHED)
#define	need_proftick()		\
    atomic_set_int(&mycpu->gd_reqflags, RQF_AST_OWEUPC)
#define	need_ipiq()		\
    atomic_set_int(&mycpu->gd_reqflags, RQF_IPIQ)
#define	signotify()		\
    atomic_set_int(&mycpu->gd_reqflags, RQF_AST_SIGNAL)
#define	clear_user_resched()	\
    atomic_clear_int(&mycpu->gd_reqflags, RQF_AST_USER_RESCHED)
#define	clear_lwkt_resched()	\
    atomic_clear_int(&mycpu->gd_reqflags, RQF_AST_LWKT_RESCHED)
#define	clear_quickret()	\
    atomic_clear_int(&mycpu->gd_reqflags, RQF_QUICKRET)
#define	user_resched_wanted()	\
    (mycpu->gd_reqflags & RQF_AST_USER_RESCHED)
#define	lwkt_resched_wanted()	\
    (mycpu->gd_reqflags & RQF_AST_LWKT_RESCHED)
#define	any_resched_wanted()	\
    (mycpu->gd_reqflags & (RQF_AST_LWKT_RESCHED|RQF_AST_USER_RESCHED))

/*
 * CTL_MACHDEP definitions.
 */
#define CPU_CONSDEV		1	/* cdev_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 }, \
}

#ifdef _KERNEL

struct lwp;

extern char	btext[];
extern char	etext[];

void	fork_trampoline (void);
void	generic_lwp_return (struct lwp *, struct trapframe *);
void	fork_return (struct lwp *, struct trapframe *);

#endif

#endif /* !_CPU_CPU_H_ */
Commit	Line	Data
fc3f9779 SS	1	/*-
	2	* Copyright (c) 1990 The Regents of the University of California.
	3	* All rights reserved.
	4	*
	5	* This code is derived from software contributed to Berkeley by
	6	* William Jolitz.
	7	*
	8	* Redistribution and use in source and binary forms, with or without
	9	* modification, are permitted provided that the following conditions
	10	* are met:
	11	* 1. Redistributions of source code must retain the above copyright
	12	* notice, this list of conditions and the following disclaimer.
	13	* 2. Redistributions in binary form must reproduce the above copyright
	14	* notice, this list of conditions and the following disclaimer in the
	15	* documentation and/or other materials provided with the distribution.
	16	* 3. All advertising materials mentioning features or use of this software
	17	* must display the following acknowledgement:
	18	* This product includes software developed by the University of
	19	* California, Berkeley and its contributors.
	20	* 4. Neither the name of the University nor the names of its contributors
	21	* may be used to endorse or promote products derived from this software
	22	* without specific prior written permission.
	23	*
	24	* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
	25	* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
	26	* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
	27	* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
	28	* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
	29	* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
	30	* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
	31	* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
	32	* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
	33	* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
	34	* SUCH DAMAGE.
	35	*
	36	* from: @(#)cpu.h 5.4 (Berkeley) 5/9/91
	37	* $FreeBSD: src/sys/i386/include/cpu.h,v 1.43.2.2 2001/06/15 09:37:57 scottl Exp $
fc3f9779 SS	38	*/
	39
	40	#ifndef _CPU_CPU_H_
	41	#define _CPU_CPU_H_
	42
46d4e165	43	/*
b2b3ffcd	44	* Definitions unique to x86_64 cpu support.
46d4e165 JG	45	*/
	46	#ifndef _CPU_PSL_H_
	47	#include <machine/psl.h>
	48	#endif
	49	#ifndef _CPU_FRAME_H_
	50	#include <machine/frame.h>
	51	#endif
	52	#ifndef _CPU_SEGMENTS_H_
	53	#include <machine/segments.h>
	54	#endif
	55
	56	/*
	57	* definitions of cpu-dependent requirements
	58	* referenced in generic code
	59	*/
	60
	61	#define cpu_exec(p) /* nothing */
	62	#define cpu_swapin(p) /* nothing */
	63	#define cpu_setstack(lp, ap) ((lp)->lwp_md.md_regs[SP] = (ap))
	64
6026c54d SZ	65	#define CLKF_INTR(intr_nest) ((intr_nest) > 1)
6026c54d SZ	66	#define CLKF_INTR_TD(td) ((td)->td_flags & TDF_INTTHREAD)
46d4e165	67	#define CLKF_PC(framep) ((framep)->if_rip)
d7f50089 YY	68
	69	/*
	70	* Preempt the current process if in interrupt from user mode,
	71	* or after the current trap/syscall if in system mode.
	72	*
	73	* We do not have to use a locked bus cycle but we do have to use an
	74	* atomic instruction because an interrupt on the local cpu can modify
	75	* the gd_reqflags field.
	76	*/
46d4e165	77	#define need_lwkt_resched() \
b12defdc	78	atomic_set_int(&mycpu->gd_reqflags, RQF_AST_LWKT_RESCHED)
46d4e165	79	#define need_user_resched() \
2a418930	80	atomic_set_int(&mycpu->gd_reqflags, RQF_AST_USER_RESCHED)
46d4e165	81	#define need_proftick() \
2a418930	82	atomic_set_int(&mycpu->gd_reqflags, RQF_AST_OWEUPC)
46d4e165	83	#define need_ipiq() \
2a418930	84	atomic_set_int(&mycpu->gd_reqflags, RQF_IPIQ)
46d4e165	85	#define signotify() \
2a418930	86	atomic_set_int(&mycpu->gd_reqflags, RQF_AST_SIGNAL)
46d4e165	87	#define clear_user_resched() \
2a418930	88	atomic_clear_int(&mycpu->gd_reqflags, RQF_AST_USER_RESCHED)
46d4e165	89	#define clear_lwkt_resched() \
2a418930	90	atomic_clear_int(&mycpu->gd_reqflags, RQF_AST_LWKT_RESCHED)
f2081646 MD	91	#define clear_quickret() \
f2081646 MD	92	atomic_clear_int(&mycpu->gd_reqflags, RQF_QUICKRET)
46d4e165 JG	93	#define user_resched_wanted() \
	94	(mycpu->gd_reqflags & RQF_AST_USER_RESCHED)
	95	#define lwkt_resched_wanted() \
	96	(mycpu->gd_reqflags & RQF_AST_LWKT_RESCHED)
	97	#define any_resched_wanted() \
	98	(mycpu->gd_reqflags & (RQF_AST_LWKT_RESCHED\|RQF_AST_USER_RESCHED))
d7f50089	99
fc3f9779 SS	100	/*
	101	* CTL_MACHDEP definitions.
	102	*/
	103	#define CPU_CONSDEV 1 /* cdev_t: console terminal device */
	104	#define CPU_ADJKERNTZ 2 /* int: timezone offset (seconds) */
	105	#define CPU_DISRTCSET 3 /* int: disable resettodr() call */
	106	#define CPU_BOOTINFO 4 /* struct: bootinfo */
	107	#define CPU_WALLCLOCK 5 /* int: indicates wall CMOS clock */
	108	#define CPU_MAXID 6 /* number of valid machdep ids */
	109
	110	#define CTL_MACHDEP_NAMES { \
	111	{ 0, 0 }, \
	112	{ "console_device", CTLTYPE_STRUCT }, \
	113	{ "adjkerntz", CTLTYPE_INT }, \
	114	{ "disable_rtc_set", CTLTYPE_INT }, \
	115	{ "bootinfo", CTLTYPE_STRUCT }, \
	116	{ "wall_cmos_clock", CTLTYPE_INT }, \
	117	}
	118
d7f50089	119	#ifdef _KERNEL
46d4e165 JG	120
	121	struct lwp;
	122
	123	extern char btext[];
	124	extern char etext[];
	125
d7f50089 YY	126	void fork_trampoline (void);
	127	void generic_lwp_return (struct lwp , struct trapframe );
	128	void fork_return (struct lwp , struct trapframe );
46d4e165	129
d7f50089 YY	130	#endif
d7f50089 YY	131
fc3f9779	132	#endif /* !_CPU_CPU_H_ */