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/*-
* 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 1.2 1993/10/08 20:51:00 rgrimes 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 FM_TRAP 0x10 /* process entered kernel on a trap frame */
#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_ */
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