/* $OpenBSD: pcb.h,v 1.25 2022/02/21 14:26:19 jsg Exp $ */ /* $NetBSD: pcb.h,v 1.21 1996/01/08 13:51:42 mycroft Exp $ */ /*- * Copyright (c) 1995 Charles M. Hannum. All rights reserved. * Copyright (c) 1990 The Regents of the University of California. * All rights reserved. * * This code is derived from software contributed to Berkeley by * William Jolitz. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. Neither the name of the University nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * * @(#)pcb.h 5.10 (Berkeley) 5/12/91 */ /* * Intel 386 process control block */ #ifndef _MACHINE_PCB_H_ #define _MACHINE_PCB_H_ #include <sys/signal.h> #include <machine/segments.h> #include <machine/npx.h> #include <machine/sysarch.h> /* * Please note that pcb_savefpu must be aligned to 16 bytes. */ struct pcb { union savefpu pcb_savefpu; /* floating point state for FPU */ int pcb_cr3; int pcb_esp; int pcb_ebp; int pcb_kstack; /* kernel stack address */ int pcb_cr0; /* saved image of CR0 */ caddr_t pcb_onfault; /* copyin/out fault recovery */ struct segment_descriptor pcb_threadsegs[2]; /* per-thread descriptors */ int vm86_eflags; /* virtual eflags for vm86 mode */ int vm86_flagmask; /* flag mask for vm86 mode */ void *vm86_userp; /* XXX performance hack */ struct pmap *pcb_pmap; /* back pointer to our pmap */ struct cpu_info *pcb_fpcpu; /* cpu holding our fpu state */ int pcb_flags; #define PCB_SAVECTX 0x00000001 }; /* the indexes of the %fs/%gs segments in pcb_threadsegs */ #define TSEG_FS 0 #define TSEG_GS 1 #endif /* _MACHINE_PCB_H_ */
