/* $NetBSD: pcb.h,v 1.58 2018/07/26 09:29:08 maxv Exp $ */
/*
* Copyright (c) 1998, 2009 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Charles M. Hannum, and by Andrew Doran.
*
* 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 NETBSD FOUNDATION, INC. 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 FOUNDATION 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.
*/
/*
* 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. 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.
*
* @(#)pcb.h 5.10 (Berkeley) 5/12/91
*/
/*
* Intel 386 process control block
*/
#ifndef _I386_PCB_H_
#define _I386_PCB_H_
#if defined(_KERNEL_OPT)
#include "opt_multiprocessor.h"
#endif
#include <machine/segments.h>
#include <x86/cpu_extended_state.h>
struct pcb {
int pcb_esp0; /* ring0 esp */
int pcb_esp; /* kernel esp */
int pcb_ebp; /* kernel ebp */
int pcb_cr0; /* saved image of CR0 */
int pcb_cr2; /* page fault address (CR2) */
int pcb_cr3; /* page directory pointer */
int pcb_iopl; /* i/o privilege level */
struct segment_descriptor pcb_fsd; /* %fs descriptor */
struct segment_descriptor pcb_gsd; /* %gs descriptor */
void *pcb_onfault; /* copyin/out fault recovery */
char *pcb_iomap; /* I/O permission bitmap */
struct dbreg *pcb_dbregs; /* CPU Debug Registers */
uint16_t pcb_fpu_dflt_cw;
#define PCB_DBREGS 0x01
int pcb_flags;
int not_used[15];
/* floating point state */
struct cpu_info *pcb_fpcpu; /* cpu holding our fp state. */
union savefpu pcb_savefpu __aligned(64);
/* **** DO NOT ADD ANYTHING HERE **** */
};
#ifndef __lint__
/* This doesn't really matter, but there is a lot of implied padding */
__CTASSERT(sizeof(struct pcb) - sizeof (union savefpu) == 128);
#endif
#endif /* _I386_PCB_H_ */