pcb.h revision 24690
1296403Sbdrewery/*- 2296403Sbdrewery * Copyright (c) 1990 The Regents of the University of California. 3296403Sbdrewery * All rights reserved. 4296403Sbdrewery * 5296403Sbdrewery * This code is derived from software contributed to Berkeley by 6296403Sbdrewery * William Jolitz. 7296403Sbdrewery * 8296403Sbdrewery * Redistribution and use in source and binary forms, with or without 9296403Sbdrewery * modification, are permitted provided that the following conditions 10296403Sbdrewery * are met: 11296403Sbdrewery * 1. Redistributions of source code must retain the above copyright 12296403Sbdrewery * notice, this list of conditions and the following disclaimer. 13296403Sbdrewery * 2. Redistributions in binary form must reproduce the above copyright 14296403Sbdrewery * notice, this list of conditions and the following disclaimer in the 15296403Sbdrewery * documentation and/or other materials provided with the distribution. 16296403Sbdrewery * 3. All advertising materials mentioning features or use of this software 17296403Sbdrewery * must display the following acknowledgement: 18296403Sbdrewery * This product includes software developed by the University of 19296403Sbdrewery * California, Berkeley and its contributors. 20 * 4. Neither the name of the University nor the names of its contributors 21 * may be used to endorse or promote products derived from this software 22 * without specific prior written permission. 23 * 24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 27 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 34 * SUCH DAMAGE. 35 * 36 * from: @(#)pcb.h 5.10 (Berkeley) 5/12/91 37 * $Id: pcb.h,v 1.18 1997/02/22 09:34:56 peter Exp $ 38 */ 39 40#ifndef _I386_PCB_H_ 41#define _I386_PCB_H_ 42 43/* 44 * Intel 386 process control block 45 */ 46#include <machine/tss.h> 47#include <machine/npx.h> 48 49struct pcb { 50 int pcb_cr3; 51 int pcb_edi; 52 int pcb_esi; 53 int pcb_ebp; 54 int pcb_esp; 55 int pcb_ebx; 56 int pcb_eip; 57 caddr_t pcb_ldt; /* per process (user) LDT */ 58 int pcb_ldt_len; /* number of LDT entries */ 59 struct save87 pcb_savefpu; /* floating point state for 287/387 */ 60 u_char pcb_flags; 61#define FP_SOFTFP 0x01 /* process using software fltng pnt emulator */ 62 caddr_t pcb_onfault; /* copyin/out fault recovery */ 63#if 0 /* some day we may switch between procs that have their own i386tss */ 64 struct i386tss pcb_tss; 65 u_char pcb_iomap[NPORT/sizeof(u_char)]; /* i/o port bitmap */ 66#endif 67}; 68 69/* 70 * The pcb is augmented with machine-dependent additional data for 71 * core dumps. For the i386: ??? 72 */ 73struct md_coredump { 74}; 75 76#ifdef KERNEL 77extern struct pcb *curpcb; /* our current running pcb */ 78void savectx __P((struct pcb*)); 79#endif 80 81#endif /* _I386_PCB_H_ */ 82