1 /* $NetBSD: pcb.h,v 1.31 2002/05/12 23:16:52 matt Exp $ */ 2 3 /*- 4 * Copyright (c) 1998 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Charles M. Hannum. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the NetBSD 21 * Foundation, Inc. and its contributors. 22 * 4. Neither the name of The NetBSD Foundation nor the names of its 23 * contributors may be used to endorse or promote products derived 24 * from this software without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 27 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 28 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 29 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 30 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 31 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 32 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 33 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 34 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 35 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 36 * POSSIBILITY OF SUCH DAMAGE. 37 */ 38 39 /*- 40 * Copyright (c) 1990 The Regents of the University of California. 41 * All rights reserved. 42 * 43 * This code is derived from software contributed to Berkeley by 44 * William Jolitz. 45 * 46 * Redistribution and use in source and binary forms, with or without 47 * modification, are permitted provided that the following conditions 48 * are met: 49 * 1. Redistributions of source code must retain the above copyright 50 * notice, this list of conditions and the following disclaimer. 51 * 2. Redistributions in binary form must reproduce the above copyright 52 * notice, this list of conditions and the following disclaimer in the 53 * documentation and/or other materials provided with the distribution. 54 * 3. All advertising materials mentioning features or use of this software 55 * must display the following acknowledgement: 56 * This product includes software developed by the University of 57 * California, Berkeley and its contributors. 58 * 4. Neither the name of the University nor the names of its contributors 59 * may be used to endorse or promote products derived from this software 60 * without specific prior written permission. 61 * 62 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 63 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 64 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 65 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 66 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 67 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 68 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 69 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 70 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 71 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 72 * SUCH DAMAGE. 73 * 74 * @(#)pcb.h 5.10 (Berkeley) 5/12/91 75 */ 76 77 /* 78 * Intel 386 process control block 79 */ 80 81 #ifndef _I386_PCB_H_ 82 #define _I386_PCB_H_ 83 84 #include <sys/signal.h> 85 86 #include <machine/segments.h> 87 #include <machine/tss.h> 88 #include <machine/npx.h> 89 #include <machine/sysarch.h> 90 91 #define NIOPORTS 1024 /* # of ports we allow to be mapped */ 92 93 struct pcb { 94 struct i386tss pcb_tss; 95 #define pcb_cr3 pcb_tss.tss_cr3 96 #define pcb_esp pcb_tss.tss_esp 97 #define pcb_ebp pcb_tss.tss_ebp 98 #define pcb_ldt_sel pcb_tss.tss_ldt 99 int pcb_cr0; /* saved image of CR0 */ 100 int pcb_cr2; /* page fault address (CR2) */ 101 union savefpu pcb_savefpu; /* floating point state for FPU */ 102 struct emcsts pcb_saveemc; /* Cyrix EMC state */ 103 /* 104 * Software pcb (extension) 105 */ 106 int pcb_flags; 107 #define PCB_USER_LDT 0x01 /* has user-set LDT */ 108 caddr_t pcb_onfault; /* copyin/out fault recovery */ 109 int vm86_eflags; /* virtual eflags for vm86 mode */ 110 int vm86_flagmask; /* flag mask for vm86 mode */ 111 void *vm86_userp; /* XXX performance hack */ 112 u_long pcb_iomap[NIOPORTS/32]; /* I/O bitmap */ 113 struct pmap *pcb_pmap; /* back pointer to our pmap */ 114 }; 115 116 /* 117 * The pcb is augmented with machine-dependent additional data for 118 * core dumps. For the i386, there is nothing to add. 119 */ 120 struct md_coredump { 121 long md_pad[8]; 122 }; 123 124 #ifdef _KERNEL 125 extern struct pcb *curpcb; /* our current running pcb */ 126 #endif 127 128 #endif /* _I386_PCB_H_ */ 129