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/proc.h

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    1 /*
    2  * Copyright (c) 1991 Regents of the University of California.
    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  * 3. All advertising materials mentioning features or use of this software
   14  *    must display the following acknowledgement:
   15  *      This product includes software developed by the University of
   16  *      California, Berkeley and its contributors.
   17  * 4. Neither the name of the University nor the names of its contributors
   18  *    may be used to endorse or promote products derived from this software
   19  *    without specific prior written permission.
   20  *
   21  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
   22  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   23  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   24  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
   25  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   26  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   27  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   28  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   29  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   30  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   31  * SUCH DAMAGE.
   32  *
   33  *      from: @(#)proc.h        7.1 (Berkeley) 5/15/91
   34  * $FreeBSD: releng/5.2/sys/i386/include/proc.h 121984 2003-11-03 21:30:00Z jhb $
   35  */
   36 
   37 #ifndef _MACHINE_PROC_H_
   38 #define _MACHINE_PROC_H_
   39 
   40 #include <machine/segments.h>
   41 
   42 struct proc_ldt {
   43         caddr_t ldt_base;
   44         int     ldt_len;
   45         int     ldt_refcnt;
   46         u_long  ldt_active;
   47         struct  segment_descriptor ldt_sd;
   48 };
   49 
   50 /*
   51  * Machine-dependent part of the proc structure for i386.
   52  */
   53 struct mdthread {
   54         register_t md_savecrit;
   55 };
   56 
   57 struct mdproc {
   58         struct proc_ldt *md_ldt;        /* (j) per-process ldt */
   59 };
   60 
   61 #ifdef  _KERNEL
   62 
   63 void    set_user_ldt(struct mdproc *);
   64 struct  proc_ldt *user_ldt_alloc(struct mdproc *, int);
   65 void    user_ldt_free(struct thread *);
   66 
   67 #endif  /* _KERNEL */
   68 
   69 #endif /* !_MACHINE_PROC_H_ */

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