1/*	$NetBSD: pcb.h,v 1.59 2019/10/12 06:31:03 maxv Exp $	*/
  2
  3/*
  4 * Copyright (c) 1998, 2009 The NetBSD Foundation, Inc.
  5 * All rights reserved.
  6 *
  7 * This code is derived from software contributed to The NetBSD Foundation
  8 * by Charles M. Hannum, and by Andrew Doran.
  9 *
 10 * Redistribution and use in source and binary forms, with or without
 11 * modification, are permitted provided that the following conditions
 12 * are met:
 13 * 1. Redistributions of source code must retain the above copyright
 14 *    notice, this list of conditions and the following disclaimer.
 15 * 2. Redistributions in binary form must reproduce the above copyright
 16 *    notice, this list of conditions and the following disclaimer in the
 17 *    documentation and/or other materials provided with the distribution.
 18 *
 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 22 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 29 * POSSIBILITY OF SUCH DAMAGE.
 30 */
 31
 32/*
 33 * Copyright (c) 1990 The Regents of the University of California.
 34 * All rights reserved.
 35 *
 36 * This code is derived from software contributed to Berkeley by
 37 * William Jolitz.
 38 *
 39 * Redistribution and use in source and binary forms, with or without
 40 * modification, are permitted provided that the following conditions
 41 * are met:
 42 * 1. Redistributions of source code must retain the above copyright
 43 *    notice, this list of conditions and the following disclaimer.
 44 * 2. Redistributions in binary form must reproduce the above copyright
 45 *    notice, this list of conditions and the following disclaimer in the
 46 *    documentation and/or other materials provided with the distribution.
 47 * 3. Neither the name of the University nor the names of its contributors
 48 *    may be used to endorse or promote products derived from this software
 49 *    without specific prior written permission.
 50 *
 51 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
 52 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 53 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 54 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
 55 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 56 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 57 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 58 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 59 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 60 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 61 * SUCH DAMAGE.
 62 *
 63 *	@(#)pcb.h	5.10 (Berkeley) 5/12/91
 64 */
 65
 66/*
 67 * Intel 386 process control block
 68 */
 69
 70#ifndef _I386_PCB_H_
 71#define _I386_PCB_H_
 72
 73#if defined(_KERNEL_OPT)
 74#include "opt_multiprocessor.h"
 75#endif
 76
 77#include <machine/segments.h>
 78#include <x86/cpu_extended_state.h>
 79
 80struct pcb {
 81	int	pcb_esp0;		/* ring0 esp */
 82	int	pcb_esp;		/* kernel esp */
 83	int	pcb_ebp;		/* kernel ebp */
 84	int	pcb_cr0;		/* saved image of CR0 */
 85	int	pcb_cr2;		/* page fault address (CR2) */
 86	int	pcb_cr3;		/* page directory pointer */
 87	int	pcb_iopl;		/* i/o privilege level */
 88
 89	struct segment_descriptor pcb_fsd;	/* %fs descriptor */
 90	struct segment_descriptor pcb_gsd; 	/* %gs descriptor */
 91	void 	*pcb_onfault;		/* copyin/out fault recovery */
 92	char	*pcb_iomap;		/* I/O permission bitmap */
 93	struct dbreg	*pcb_dbregs;	/* CPU Debug Registers */
 94	uint16_t pcb_fpu_dflt_cw;
 95
 96#define	PCB_DBREGS	0x01
 97	int	pcb_flags;
 98
 99	int	not_used[15];
100
101	/* floating point state */
102	union savefpu	pcb_savefpu __aligned(64);
103	/* **** DO NOT ADD ANYTHING HERE **** */
104
105};
106#ifndef __lint__
107/* This doesn't really matter, but there is a lot of implied padding */
108__CTASSERT(sizeof(struct pcb) - sizeof (union savefpu) == 128);
109#endif
110
111#endif /* _I386_PCB_H_ */