1 /* $NetBSD: pcb.h,v 1.50 2013/12/01 01:05:16 christos Exp $ */
4 * Copyright (c) 1998, 2009 The NetBSD Foundation, Inc.
7 * This code is derived from software contributed to The NetBSD Foundation
8 * by Charles M. Hannum, and by Andrew Doran.
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33 * Copyright (c) 1990 The Regents of the University of California.
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36 * This code is derived from software contributed to Berkeley by
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40 * modification, are permitted provided that the following conditions
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43 * notice, this list of conditions and the following disclaimer.
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63 * @(#)pcb.h 5.10 (Berkeley) 5/12/91
67 * Intel 386 process control block
73 #if defined(_KERNEL_OPT)
74 #include "opt_multiprocessor.h"
77 #include <sys/signal.h>
79 #include <machine/segments.h>
80 #include <machine/tss.h>
82 #include <i386/sysarch.h>
85 int pcb_esp0
; /* ring0 esp */
86 int pcb_esp
; /* kernel esp */
87 int pcb_ebp
; /* kernel ebp */
88 int pcb_unused
; /* unused */
89 int pcb_cr0
; /* saved image of CR0 */
90 int pcb_cr2
; /* page fault address (CR2) */
91 int pcb_cr3
; /* page directory pointer */
92 int pcb_iopl
; /* i/o privilege level */
94 /* floating point state for FPU */
95 union savefpu pcb_savefpu
__aligned(16);
97 struct segment_descriptor pcb_fsd
; /* %fs descriptor */
98 struct segment_descriptor pcb_gsd
; /* %gs descriptor */
99 void * pcb_onfault
; /* copyin/out fault recovery */
100 int vm86_eflags
; /* virtual eflags for vm86 mode */
101 int vm86_flagmask
; /* flag mask for vm86 mode */
102 void *vm86_userp
; /* XXX performance hack */
103 struct cpu_info
*pcb_fpcpu
; /* cpu holding our fp state. */
104 char *pcb_iomap
; /* I/O permission bitmap */
108 * The pcb is augmented with machine-dependent additional data for
109 * core dumps. For the i386, there is nothing to add.
115 #endif /* _I386_PCB_H_ */