104 lines
3.6 KiB
C
104 lines
3.6 KiB
C
/* $NetBSD: pcb.h,v 1.23 1998/02/10 14:11:57 mrg Exp $ */
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/*-
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* Copyright (c) 1995 Charles M. Hannum. All rights reserved.
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* Copyright (c) 1990 The Regents of the University of California.
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* All rights reserved.
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*
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* This code is derived from software contributed to Berkeley by
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* William Jolitz.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* @(#)pcb.h 5.10 (Berkeley) 5/12/91
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*/
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/*
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* Intel 386 process control block
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*/
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#ifndef _I386_PCB_H_
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#define _I386_PCB_H_
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#if defined(_KERNEL) && !defined(_LKM)
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#include "opt_pmap_new.h"
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#endif
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#include <sys/signal.h>
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#include <machine/segments.h>
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#include <machine/tss.h>
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#include <machine/npx.h>
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#include <machine/sysarch.h>
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#define NIOPORTS 1024 /* # of ports we allow to be mapped */
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struct pcb {
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struct i386tss pcb_tss;
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#define pcb_cr3 pcb_tss.tss_cr3
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#define pcb_esp pcb_tss.tss_esp
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#define pcb_ebp pcb_tss.tss_ebp
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#define pcb_fs pcb_tss.tss_fs
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#define pcb_gs pcb_tss.tss_gs
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#define pcb_ldt_sel pcb_tss.tss_ldt
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int pcb_tss_sel;
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union descriptor *pcb_ldt; /* per process (user) LDT */
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int pcb_ldt_len; /* number of LDT entries */
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int pcb_cr0; /* saved image of CR0 */
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struct save87 pcb_savefpu; /* floating point state for 287/387 */
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struct emcsts pcb_saveemc; /* Cyrix EMC state */
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/*
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* Software pcb (extension)
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*/
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int pcb_flags;
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#define PCB_USER_LDT 0x01 /* has user-set LDT */
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caddr_t pcb_onfault; /* copyin/out fault recovery */
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int vm86_eflags; /* virtual eflags for vm86 mode */
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int vm86_flagmask; /* flag mask for vm86 mode */
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void *vm86_userp; /* XXX performance hack */
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u_long pcb_iomap[NIOPORTS/32]; /* I/O bitmap */
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#if defined(PMAP_NEW)
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struct pmap *pcb_pmap; /* back pointer to our pmap */
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#endif
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};
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/*
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* The pcb is augmented with machine-dependent additional data for
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* core dumps. For the i386, there is nothing to add.
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*/
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struct md_coredump {
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long md_pad[8];
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};
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#ifdef _KERNEL
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struct pcb *curpcb; /* our current running pcb */
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#endif
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#endif /* _I386_PCB_H_ */
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