root / lab4 / .minix-src / include / i386 / pcb.h @ 14
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| 1 | 13 | up20180614 | /* $NetBSD: pcb.h,v 1.54 2014/04/21 19:13:22 christos Exp $ */
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| 2 | |||
| 3 | /*-
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| 4 | * Copyright (c) 1998, 2009 The NetBSD Foundation, Inc.
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| 5 | * All rights reserved.
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| 6 | *
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| 7 | * This code is derived from software contributed to The NetBSD Foundation
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| 8 | * by Charles M. Hannum, and by Andrew Doran.
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| 9 | *
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| 10 | * Redistribution and use in source and binary forms, with or without
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| 11 | * modification, are permitted provided that the following conditions
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| 12 | * are met:
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| 13 | * 1. Redistributions of source code must retain the above copyright
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| 14 | * notice, this list of conditions and the following disclaimer.
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| 15 | * 2. Redistributions in binary form must reproduce the above copyright
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| 16 | * notice, this list of conditions and the following disclaimer in the
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| 17 | * documentation and/or other materials provided with the distribution.
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| 18 | *
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| 19 | * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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| 20 | * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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| 21 | * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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| 22 | * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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| 23 | * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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| 24 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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| 25 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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| 26 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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| 27 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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| 28 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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| 29 | * POSSIBILITY OF SUCH DAMAGE.
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| 30 | */
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| 31 | |||
| 32 | /*-
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| 33 | * Copyright (c) 1990 The Regents of the University of California.
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| 34 | * All rights reserved.
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| 35 | *
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| 36 | * This code is derived from software contributed to Berkeley by
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| 37 | * William Jolitz.
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| 38 | *
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| 39 | * Redistribution and use in source and binary forms, with or without
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| 40 | * modification, are permitted provided that the following conditions
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| 41 | * are met:
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| 42 | * 1. Redistributions of source code must retain the above copyright
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| 43 | * notice, this list of conditions and the following disclaimer.
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| 44 | * 2. Redistributions in binary form must reproduce the above copyright
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| 45 | * notice, this list of conditions and the following disclaimer in the
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| 46 | * documentation and/or other materials provided with the distribution.
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| 47 | * 3. Neither the name of the University nor the names of its contributors
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| 48 | * may be used to endorse or promote products derived from this software
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| 49 | * without specific prior written permission.
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| 50 | *
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| 51 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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| 52 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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| 53 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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| 54 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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| 55 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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| 56 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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| 57 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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| 58 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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| 59 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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| 60 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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| 61 | * SUCH DAMAGE.
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| 62 | *
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| 63 | * @(#)pcb.h 5.10 (Berkeley) 5/12/91
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| 64 | */
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| 65 | |||
| 66 | /*
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| 67 | * Intel 386 process control block
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| 68 | */
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| 69 | |||
| 70 | #ifndef _I386_PCB_H_
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| 71 | #define _I386_PCB_H_
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| 72 | |||
| 73 | #if defined(_KERNEL_OPT)
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| 74 | #include "opt_multiprocessor.h" |
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| 75 | #endif
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| 76 | |||
| 77 | #include <machine/segments.h> |
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| 78 | #include <x86/cpu_extended_state.h> |
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| 79 | |||
| 80 | struct pcb {
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| 81 | int pcb_esp0; /* ring0 esp */ |
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| 82 | int pcb_esp; /* kernel esp */ |
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| 83 | int pcb_ebp; /* kernel ebp */ |
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| 84 | int pcb_cr0; /* saved image of CR0 */ |
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| 85 | int pcb_cr2; /* page fault address (CR2) */ |
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| 86 | int pcb_cr3; /* page directory pointer */ |
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| 87 | int pcb_iopl; /* i/o privilege level */ |
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| 88 | |||
| 89 | struct segment_descriptor pcb_fsd; /* %fs descriptor */ |
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| 90 | struct segment_descriptor pcb_gsd; /* %gs descriptor */ |
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| 91 | void *pcb_onfault; /* copyin/out fault recovery */ |
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| 92 | int vm86_eflags; /* virtual eflags for vm86 mode */ |
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| 93 | int vm86_flagmask; /* flag mask for vm86 mode */ |
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| 94 | void *vm86_userp; /* XXX performance hack */ |
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| 95 | char *pcb_iomap; /* I/O permission bitmap */ |
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| 96 | |||
| 97 | int not_used[15]; |
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| 98 | |||
| 99 | /* floating point state */
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| 100 | struct cpu_info *pcb_fpcpu; /* cpu holding our fp state. */ |
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| 101 | union savefpu pcb_savefpu __aligned(64); |
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| 102 | /* **** DO NOT ADD ANYTHING HERE **** */
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| 103 | |||
| 104 | }; |
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| 105 | #ifndef __lint__
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| 106 | /* This doesn't really matter, but there is a lot of implied padding */
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| 107 | __CTASSERT(sizeof(struct pcb) - sizeof (union savefpu) == 128); |
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| 108 | #endif
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| 109 | |||
| 110 | #endif /* _I386_PCB_H_ */ |