1 /* $NetBSD: pcb.h,v 1.59 2019/10/12 06:31:03 maxv Exp $ */ 2 3 /* 4 * Copyright (c) 1998, 2009 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, and by Andrew Doran. 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 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 /* 33 * Copyright (c) 1990 The Regents of the University of California. 34 * All rights reserved. 35 * 36 * This code is derived from software contributed to Berkeley by 37 * William Jolitz. 38 * 39 * Redistribution and use in source and binary forms, with or without 40 * modification, are permitted provided that the following conditions 41 * are met: 42 * 1. Redistributions of source code must retain the above copyright 43 * notice, this list of conditions and the following disclaimer. 44 * 2. Redistributions in binary form must reproduce the above copyright 45 * notice, this list of conditions and the following disclaimer in the 46 * documentation and/or other materials provided with the distribution. 47 * 3. Neither the name of the University nor the names of its contributors 48 * may be used to endorse or promote products derived from this software 49 * without specific prior written permission. 50 * 51 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 52 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 53 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 54 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 55 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 56 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 57 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 58 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 59 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 60 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 61 * SUCH DAMAGE. 62 * 63 * @(#)pcb.h 5.10 (Berkeley) 5/12/91 64 */ 65 66 /* 67 * Intel 386 process control block 68 */ 69 70 #ifndef _I386_PCB_H_ 71 #define _I386_PCB_H_ 72 73 #if defined(_KERNEL_OPT) 74 #include "opt_multiprocessor.h" 75 #endif 76 77 #include <machine/segments.h> 78 #include <x86/cpu_extended_state.h> 79 80 struct pcb { 81 int pcb_esp0; /* ring0 esp */ 82 int pcb_esp; /* kernel esp */ 83 int pcb_ebp; /* kernel ebp */ 84 int pcb_cr0; /* saved image of CR0 */ 85 int pcb_cr2; /* page fault address (CR2) */ 86 int pcb_cr3; /* page directory pointer */ 87 int pcb_iopl; /* i/o privilege level */ 88 89 struct segment_descriptor pcb_fsd; /* %fs descriptor */ 90 struct segment_descriptor pcb_gsd; /* %gs descriptor */ 91 void *pcb_onfault; /* copyin/out fault recovery */ 92 char *pcb_iomap; /* I/O permission bitmap */ 93 struct dbreg *pcb_dbregs; /* CPU Debug Registers */ 94 uint16_t pcb_fpu_dflt_cw; 95 96 #define PCB_DBREGS 0x01 97 int pcb_flags; 98 99 int not_used[15]; 100 101 /* floating point state */ 102 union savefpu pcb_savefpu __aligned(64); 103 /* **** DO NOT ADD ANYTHING HERE **** */ 104 105 }; 106 #ifndef __lint__ 107 /* This doesn't really matter, but there is a lot of implied padding */ 108 __CTASSERT(sizeof(struct pcb) - sizeof (union savefpu) == 128); 109 #endif 110 111 #endif /* _I386_PCB_H_ */ 112