[unix-history] / sys / i386 / include / pcb.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: @(#)pcb.h	5.10 (Berkeley) 5/12/91
 *	$Id: pcb.h,v 1.3 1993/11/07 17:42:59 wollman Exp $
 */

#ifndef _I386_PCB_H_
#define _I386_PCB_H_

/*
 * Intel 386 process control block
 */
#include "machine/tss.h"
#include "machine/npx.h"

struct pcb {
	struct	i386tss pcb_tss;
#define	pcb_ksp	pcb_tss.tss_esp0
#define	pcb_ptd	pcb_tss.tss_cr3
#define	pcb_cr3	pcb_ptd
#define	pcb_pc	pcb_tss.tss_eip
#define	pcb_psl	pcb_tss.tss_eflags
#define	pcb_usp	pcb_tss.tss_esp
#define	pcb_fp	pcb_tss.tss_ebp
#ifdef	notyet
	u_char	pcb_iomap[NPORT/sizeof(u_char)]; /* i/o port bitmap */
#endif
	caddr_t	pcb_ldt;		/* per process (user) LDT */
	int	pcb_ldt_len;		/* number of LDT entries */
	struct	save87	pcb_savefpu;	/* floating point state for 287/387 */
	struct	emcsts	pcb_saveemc;	/* Cyrix EMC state */
/*
 * Software pcb (extension)
 */
	int	pcb_flags;
#ifdef notused
#define	FP_WASUSED	0x01	/* process has used fltng pnt hardware */
#define	FP_NEEDSSAVE	0x02	/* ... that needs save on next context switch */
#define	FP_NEEDSRESTORE	0x04	/* ... that needs restore on next DNA fault */
#endif
#define	FP_USESEMC	0x08	/* process uses EMC memory-mapped mode */
#define	FP_SOFTFP	0x20	/* process using software fltng pnt emulator */
	short	pcb_iml;	/* interrupt mask level */
	caddr_t	pcb_onfault;	/* copyin/out fault recovery */
	long	pcb_sigc[8];	/* XXX signal code trampoline */
	int	pcb_cmap2;	/* XXX temporary PTE - will prefault instead */
};

#ifdef KERNEL
extern struct pcb *curpcb;		/* our current running pcb */
#endif

#endif /* _I386_PCB_H_ */
Commit	Line	Data
15637ed4 RG	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	*
f445db07	36	* from: @(#)pcb.h 5.10 (Berkeley) 5/12/91
1e49a55f	37	* $Id: pcb.h,v 1.3 1993/11/07 17:42:59 wollman Exp $
15637ed4 RG	38	*/
15637ed4 RG	39
f445db07 RG	40	#ifndef _I386_PCB_H_
	41	#define _I386_PCB_H_
	42
15637ed4 RG	43	/*
	44	* Intel 386 process control block
	45	*/
	46	#include "machine/tss.h"
	47	#include "machine/npx.h"
	48
	49	struct pcb {
	50	struct i386tss pcb_tss;
	51	#define pcb_ksp pcb_tss.tss_esp0
	52	#define pcb_ptd pcb_tss.tss_cr3
	53	#define pcb_cr3 pcb_ptd
	54	#define pcb_pc pcb_tss.tss_eip
	55	#define pcb_psl pcb_tss.tss_eflags
	56	#define pcb_usp pcb_tss.tss_esp
	57	#define pcb_fp pcb_tss.tss_ebp
	58	#ifdef notyet
	59	u_char pcb_iomap[NPORT/sizeof(u_char)]; /* i/o port bitmap */
	60	#endif
f445db07 RG	61	caddr_t pcb_ldt; /* per process (user) LDT */
f445db07 RG	62	int pcb_ldt_len; /* number of LDT entries */
15637ed4 RG	63	struct save87 pcb_savefpu; /* floating point state for 287/387 */
	64	struct emcsts pcb_saveemc; /* Cyrix EMC state */
	65	/*
	66	* Software pcb (extension)
	67	*/
	68	int pcb_flags;
	69	#ifdef notused
	70	#define FP_WASUSED 0x01 /* process has used fltng pnt hardware */
	71	#define FP_NEEDSSAVE 0x02 /* ... that needs save on next context switch */
	72	#define FP_NEEDSRESTORE 0x04 /* ... that needs restore on next DNA fault */
	73	#endif
	74	#define FP_USESEMC 0x08 /* process uses EMC memory-mapped mode */
15637ed4 RG	75	#define FP_SOFTFP 0x20 /* process using software fltng pnt emulator */
	76	short pcb_iml; /* interrupt mask level */
	77	caddr_t pcb_onfault; /* copyin/out fault recovery */
	78	long pcb_sigc[8]; /* XXX signal code trampoline */
	79	int pcb_cmap2; /* XXX temporary PTE - will prefault instead */
	80	};
	81
	82	#ifdef KERNEL
126bd309	83	extern struct pcb curpcb; / our current running pcb */
15637ed4	84	#endif
f445db07 RG	85
f445db07 RG	86	#endif /* _I386_PCB_H_ */