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/mips/include/pcb.h

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    1 /*      $OpenBSD: pcb.h,v 1.3 1998/09/15 10:50:12 pefo Exp $    */
    2 
    3 /*-
    4  * Copyright (c) 1988 University of Utah.
    5  * Copyright (c) 1992, 1993
    6  *      The Regents of the University of California.  All rights reserved.
    7  *
    8  * This code is derived from software contributed to Berkeley by
    9  * the Systems Programming Group of the University of Utah Computer
   10  * Science Department and Ralph Campbell.
   11  *
   12  * Redistribution and use in source and binary forms, with or without
   13  * modification, are permitted provided that the following conditions
   14  * are met:
   15  * 1. Redistributions of source code must retain the above copyright
   16  *    notice, this list of conditions and the following disclaimer.
   17  * 2. Redistributions in binary form must reproduce the above copyright
   18  *    notice, this list of conditions and the following disclaimer in the
   19  *    documentation and/or other materials provided with the distribution.
   20  * 4. Neither the name of the University nor the names of its contributors
   21  *    may be used to endorse or promote products derived from this software
   22  *    without specific prior written permission.
   23  *
   24  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
   25  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   26  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   27  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
   28  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   29  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   30  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   31  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   32  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   33  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   34  * SUCH DAMAGE.
   35  *
   36  *      from: Utah Hdr: pcb.h 1.13 89/04/23
   37  *      from: @(#)pcb.h 8.1 (Berkeley) 6/10/93
   38  *      JNPR: pcb.h,v 1.2 2006/08/07 11:51:17 katta
   39  * $FreeBSD: releng/9.0/sys/mips/include/pcb.h 211862 2010-08-27 07:45:50Z jchandra $
   40  */
   41 
   42 #ifndef _MACHINE_PCB_H_
   43 #define _MACHINE_PCB_H_
   44 
   45 #include <machine/frame.h>
   46 
   47 /*
   48  * MIPS process control block
   49  */
   50 struct pcb
   51 {
   52         struct trapframe pcb_regs;      /* saved CPU and registers */
   53         __register_t pcb_context[14];   /* kernel context for resume */
   54         void *pcb_onfault;              /* for copyin/copyout faults */
   55         register_t pcb_tpc;
   56 };
   57 
   58 /* these match the regnum's in regnum.h
   59  * used by switch.S
   60  */
   61 #define PCB_REG_S0      0
   62 #define PCB_REG_S1      1
   63 #define PCB_REG_S2      2
   64 #define PCB_REG_S3      3
   65 #define PCB_REG_S4      4
   66 #define PCB_REG_S5      5
   67 #define PCB_REG_S6      6
   68 #define PCB_REG_S7      7
   69 #define PCB_REG_SP      8
   70 #define PCB_REG_S8      9
   71 #define PCB_REG_RA      10
   72 #define PCB_REG_SR      11
   73 #define PCB_REG_GP      12
   74 #define PCB_REG_PC      13
   75 
   76 
   77 #ifdef _KERNEL
   78 extern struct pcb *curpcb;              /* the current running pcb */
   79 
   80 void makectx(struct trapframe *, struct pcb *);
   81 int savectx(struct pcb *);
   82 #endif
   83 
   84 #endif  /* !_MACHINE_PCB_H_ */

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