pcb.h revision 25545
14Srgrimes/*- 24Srgrimes * Copyright (c) 1990 The Regents of the University of California. 34Srgrimes * All rights reserved. 44Srgrimes * 54Srgrimes * This code is derived from software contributed to Berkeley by 64Srgrimes * William Jolitz. 74Srgrimes * 84Srgrimes * Redistribution and use in source and binary forms, with or without 94Srgrimes * modification, are permitted provided that the following conditions 104Srgrimes * are met: 114Srgrimes * 1. Redistributions of source code must retain the above copyright 124Srgrimes * notice, this list of conditions and the following disclaimer. 134Srgrimes * 2. Redistributions in binary form must reproduce the above copyright 144Srgrimes * notice, this list of conditions and the following disclaimer in the 154Srgrimes * documentation and/or other materials provided with the distribution. 164Srgrimes * 3. All advertising materials mentioning features or use of this software 174Srgrimes * must display the following acknowledgement: 184Srgrimes * This product includes software developed by the University of 194Srgrimes * California, Berkeley and its contributors. 204Srgrimes * 4. Neither the name of the University nor the names of its contributors 214Srgrimes * may be used to endorse or promote products derived from this software 224Srgrimes * without specific prior written permission. 234Srgrimes * 244Srgrimes * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 254Srgrimes * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 264Srgrimes * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 274Srgrimes * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 284Srgrimes * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 294Srgrimes * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 304Srgrimes * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 314Srgrimes * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 324Srgrimes * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 334Srgrimes * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 344Srgrimes * SUCH DAMAGE. 354Srgrimes * 36557Srgrimes * from: @(#)pcb.h 5.10 (Berkeley) 5/12/91 3725545Speter * $Id: pcb.h,v 1.20 1997/04/26 11:45:39 peter Exp $ 384Srgrimes */ 394Srgrimes 40557Srgrimes#ifndef _I386_PCB_H_ 41557Srgrimes#define _I386_PCB_H_ 42557Srgrimes 434Srgrimes/* 444Srgrimes * Intel 386 process control block 454Srgrimes */ 462056Swollman#include <machine/tss.h> 472056Swollman#include <machine/npx.h> 4825545Speter#if defined(KERNEL) && defined(SMP) 4925545Speter#include <machine/smp.h> /* cpunumber() */ 5025545Speter#endif 514Srgrimes 524Srgrimesstruct pcb { 5324690Speter int pcb_cr3; 5424690Speter int pcb_edi; 5524690Speter int pcb_esi; 5624690Speter int pcb_ebp; 5724690Speter int pcb_esp; 5824690Speter int pcb_ebx; 5924690Speter int pcb_eip; 60557Srgrimes caddr_t pcb_ldt; /* per process (user) LDT */ 61557Srgrimes int pcb_ldt_len; /* number of LDT entries */ 624Srgrimes struct save87 pcb_savefpu; /* floating point state for 287/387 */ 6310092Sdg u_char pcb_flags; 6410092Sdg#define FP_SOFTFP 0x01 /* process using software fltng pnt emulator */ 654Srgrimes caddr_t pcb_onfault; /* copyin/out fault recovery */ 6625164Speter u_long pcb_mpnest; 6725164Speter u_long __pcb_spare[7]; /* adjust to avoid core dump size changes */ 6824690Speter#if 0 /* some day we may switch between procs that have their own i386tss */ 6924690Speter struct i386tss pcb_tss; 7024690Speter u_char pcb_iomap[NPORT/sizeof(u_char)]; /* i/o port bitmap */ 7124690Speter#endif 724Srgrimes}; 734Srgrimes 741549Srgrimes/* 751549Srgrimes * The pcb is augmented with machine-dependent additional data for 761549Srgrimes * core dumps. For the i386: ??? 771549Srgrimes */ 781549Srgrimesstruct md_coredump { 791549Srgrimes}; 801549Srgrimes 814Srgrimes#ifdef KERNEL 8225164Speter 8325164Speter#ifdef SMP 8425545Speterextern struct pcb *SMPcurpcb[]; /* our current running pcb */ 8525164Speter#define curpcb (SMPcurpcb[cpunumber()]) 8625164Speter#else /* !SMP */ 87719Swollmanextern struct pcb *curpcb; /* our current running pcb */ 8825164Speter#endif /* SMP */ 8925164Speter 9015501Sbdevoid savectx __P((struct pcb*)); 914Srgrimes#endif 92557Srgrimes 93557Srgrimes#endif /* _I386_PCB_H_ */ 94