pcb.h revision 46129
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 3746129Sluoqi * $Id: pcb.h,v 1.26 1998/02/03 21:27:50 bde Exp $ 384Srgrimes */ 394Srgrimes 40557Srgrimes#ifndef _I386_PCB_H_ 41557Srgrimes#define _I386_PCB_H_ 42557Srgrimes 434Srgrimes/* 444Srgrimes * Intel 386 process control block 454Srgrimes */ 4646129Sluoqi#include <machine/globals.h> 472056Swollman#include <machine/npx.h> 484Srgrimes 494Srgrimesstruct pcb { 5024690Speter int pcb_cr3; 5124690Speter int pcb_edi; 5224690Speter int pcb_esi; 5324690Speter int pcb_ebp; 5424690Speter int pcb_esp; 5524690Speter int pcb_ebx; 5624690Speter int pcb_eip; 57557Srgrimes caddr_t pcb_ldt; /* per process (user) LDT */ 58557Srgrimes int pcb_ldt_len; /* number of LDT entries */ 594Srgrimes struct save87 pcb_savefpu; /* floating point state for 287/387 */ 6010092Sdg u_char pcb_flags; 6110092Sdg#define FP_SOFTFP 0x01 /* process using software fltng pnt emulator */ 624Srgrimes caddr_t pcb_onfault; /* copyin/out fault recovery */ 6333051Sbde#ifdef SMP 6425164Speter u_long pcb_mpnest; 6533051Sbde#else 6633051Sbde u_long pcb_mpnest_dontuse; 6733051Sbde#endif 6826494Sbde int pcb_gs; 6933051Sbde#ifdef VM86 7027993Sdyson struct pcb_ext *pcb_ext; /* optional pcb extension */ 7133051Sbde#else 7233051Sbde struct pcb_ext *pcb_ext_dontuse; 7333051Sbde#endif 7446129Sluoqi u_long __pcb_spare[2]; /* adjust to avoid core dump size changes */ 754Srgrimes}; 764Srgrimes 771549Srgrimes/* 781549Srgrimes * The pcb is augmented with machine-dependent additional data for 791549Srgrimes * core dumps. For the i386: ??? 801549Srgrimes */ 811549Srgrimesstruct md_coredump { 821549Srgrimes}; 831549Srgrimes 844Srgrimes#ifdef KERNEL 8525164Speter 8646129Sluoqi#ifndef curpcb 87719Swollmanextern struct pcb *curpcb; /* our current running pcb */ 8846129Sluoqi#endif 8925164Speter 9030274Spetervoid savectx __P((struct pcb *)); 914Srgrimes#endif 92557Srgrimes 93557Srgrimes#endif /* _I386_PCB_H_ */ 94