pcb.h revision 54188
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 3750477Speter * $FreeBSD: head/sys/amd64/include/pcb.h 54188 1999-12-06 04:53:08Z luoqi $ 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; 5748691Sjlemon 5848691Sjlemon int pcb_dr0; 5948691Sjlemon int pcb_dr1; 6048691Sjlemon int pcb_dr2; 6148691Sjlemon int pcb_dr3; 6248691Sjlemon int pcb_dr6; 6348691Sjlemon int pcb_dr7; 6448691Sjlemon 6554188Sluoqi#ifdef USER_LDT 6654188Sluoqi struct pcb_ldt *pcb_ldt; /* per process (user) LDT */ 6754188Sluoqi#else 6854188Sluoqi struct pcb_ldt *pcb_ldt_dontuse; 6954188Sluoqi#endif 704Srgrimes struct save87 pcb_savefpu; /* floating point state for 287/387 */ 7110092Sdg u_char pcb_flags; 7210092Sdg#define FP_SOFTFP 0x01 /* process using software fltng pnt emulator */ 7348691Sjlemon#define PCB_DBREGS 0x02 /* process using debug registers */ 744Srgrimes caddr_t pcb_onfault; /* copyin/out fault recovery */ 7533051Sbde#ifdef SMP 7625164Speter u_long pcb_mpnest; 7733051Sbde#else 7833051Sbde u_long pcb_mpnest_dontuse; 7933051Sbde#endif 8026494Sbde int pcb_gs; 8127993Sdyson struct pcb_ext *pcb_ext; /* optional pcb extension */ 8254188Sluoqi u_long __pcb_spare[3]; /* adjust to avoid core dump size changes */ 834Srgrimes}; 844Srgrimes 851549Srgrimes/* 861549Srgrimes * The pcb is augmented with machine-dependent additional data for 871549Srgrimes * core dumps. For the i386: ??? 881549Srgrimes */ 891549Srgrimesstruct md_coredump { 901549Srgrimes}; 911549Srgrimes 924Srgrimes#ifdef KERNEL 9325164Speter 9446129Sluoqi#ifndef curpcb 95719Swollmanextern struct pcb *curpcb; /* our current running pcb */ 9646129Sluoqi#endif 9725164Speter 9830274Spetervoid savectx __P((struct pcb *)); 994Srgrimes#endif 100557Srgrimes 101557Srgrimes#endif /* _I386_PCB_H_ */ 102