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pcb.h revision 1.43 
      1 /*	$NetBSD: pcb.h,v 1.43 2008/01/04 16:38:46 yamt 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. Neither the name of the University nor the names of its contributors
     55  *    may be used to endorse or promote products derived from this software
     56  *    without specific prior written permission.
     57  *
     58  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     59  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     60  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     61  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     62  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     63  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     64  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     65  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     66  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     67  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     68  * SUCH DAMAGE.
     69  *
     70  *	@(#)pcb.h	5.10 (Berkeley) 5/12/91
     71  */
     72 
     73 /*
     74  * Intel 386 process control block
     75  */
     76 
     77 #ifndef _I386_PCB_H_
     78 #define _I386_PCB_H_
     79 
     80 #if defined(_KERNEL_OPT)
     81 #include "opt_multiprocessor.h"
     82 #endif
     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 struct pcb {
     92 	int	pcb_esp0;		/* ring0 esp */
     93 	int	pcb_esp;		/* kernel esp */
     94 	int	pcb_ebp;		/* kernel ebp */
     95 	int	pcb_ldt_sel;
     96 	int	pcb_cr0;		/* saved image of CR0 */
     97 	int	pcb_cr2;		/* page fault address (CR2) */
     98 	int	pcb_cr3;		/* page directory pointer */
     99 	int	pcb_iopl;		/* i/o privilege level */
    100 
    101 	/* floating point state for FPU */
    102 	union	savefpu pcb_savefpu __aligned(16);
    103 
    104 /*
    105  * Software pcb (extension)
    106  */
    107 	int	pcb_fsd[2];		/* %fs descriptor */
    108 	int	pcb_gsd[2];		/* %gs descriptor */
    109 	void *	pcb_onfault;		/* copyin/out fault recovery */
    110 	int	vm86_eflags;		/* virtual eflags for vm86 mode */
    111 	int	vm86_flagmask;		/* flag mask for vm86 mode */
    112 	void	*vm86_userp;		/* XXX performance hack */
    113 	struct cpu_info *pcb_fpcpu;	/* cpu holding our fp state. */
    114 	char	*pcb_iomap;		/* I/O permission bitmap */
    115 };
    116 
    117 /*
    118  * The pcb is augmented with machine-dependent additional data for
    119  * core dumps. For the i386, there is nothing to add.
    120  */
    121 struct md_coredump {
    122 	long	md_pad[8];
    123 };
    124 
    125 #endif /* _I386_PCB_H_ */
    126