The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


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FreeBSD/Linux Kernel Cross Reference
sys/i386/include/pcb_ext.h

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    1 /*-
    2  * Copyright (c) 1997 Jonathan Lemon
    3  * All rights reserved.
    4  *
    5  * Redistribution and use in source and binary forms, with or without
    6  * modification, are permitted provided that the following conditions
    7  * are met:
    8  * 1. Redistributions of source code must retain the above copyright
    9  *    notice, this list of conditions and the following disclaimer.
   10  * 2. Redistributions in binary form must reproduce the above copyright
   11  *    notice, this list of conditions and the following disclaimer in the
   12  *    documentation and/or other materials provided with the distribution.
   13  *
   14  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
   15  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   16  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   17  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
   18  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   19  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   20  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   21  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   22  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   23  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   24  * SUCH DAMAGE.
   25  *
   26  * $FreeBSD: src/sys/i386/include/pcb_ext.h,v 1.9.8.1 2005/09/26 19:40:14 jhb Exp $
   27  */
   28 
   29 #ifndef _I386_PCB_EXT_H_
   30 #define _I386_PCB_EXT_H_
   31 
   32 /*
   33  * Extension to the 386 process control block
   34  */
   35 #include <machine/tss.h>
   36 #include <machine/vm86.h>
   37 #include <machine/segments.h>
   38 
   39 struct pcb_ext {
   40         struct  segment_descriptor ext_tssd;    /* tss descriptor */
   41         struct  i386tss ext_tss;        /* per-process i386tss */
   42         caddr_t ext_iomap;              /* i/o permission bitmap */
   43         struct  vm86_kernel ext_vm86;   /* vm86 area */
   44 };
   45 
   46 #ifdef _KERNEL
   47 extern int private_tss;
   48 
   49 int i386_extend_pcb(struct thread *);
   50 
   51 #endif
   52 
   53 #endif /* _I386_PCB_EXT_H_ */

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