pcb.h

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    1 /*-
    2  * Copyright (c) 2003 Peter Wemm.
    3  * Copyright (c) 1990 The Regents of the University of California.
    4  * All rights reserved.
    5  *
    6  * This code is derived from software contributed to Berkeley by
    7  * William Jolitz.
    8  *
    9  * Redistribution and use in source and binary forms, with or without
   10  * modification, are permitted provided that the following conditions
   11  * are met:
   12  * 1. Redistributions of source code must retain the above copyright
   13  *    notice, this list of conditions and the following disclaimer.
   14  * 2. Redistributions in binary form must reproduce the above copyright
   15  *    notice, this list of conditions and the following disclaimer in the
   16  *    documentation and/or other materials provided with the distribution.
   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: @(#)pcb.h 5.10 (Berkeley) 5/12/91
   34  * $FreeBSD$
   35  */
   36 
   37 #ifndef _AMD64_PCB_H_
   38 #define _AMD64_PCB_H_
   39 
   40 /*
   41  * AMD64 process control block
   42  */
   43 #include <machine/fpu.h>
   44 #include <machine/segments.h>
   45 
   46 struct pcb {
   47         register_t      pcb_cr3;
   48         register_t      pcb_r15;
   49         register_t      pcb_r14;
   50         register_t      pcb_r13;
   51         register_t      pcb_r12;
   52         register_t      pcb_rbp;
   53         register_t      pcb_rsp;
   54         register_t      pcb_rbx;
   55         register_t      pcb_rip;
   56         register_t      pcb_fsbase;
   57         register_t      pcb_gsbase;
   58         u_int32_t       pcb_ds;
   59         u_int32_t       pcb_es;
   60         u_int32_t       pcb_fs;
   61         u_int32_t       pcb_gs;
   62         u_int64_t       pcb_dr0;
   63         u_int64_t       pcb_dr1;
   64         u_int64_t       pcb_dr2;
   65         u_int64_t       pcb_dr3;
   66         u_int64_t       pcb_dr6;
   67         u_int64_t       pcb_dr7;
   68 
   69         struct  savefpu pcb_save;
   70         u_long  pcb_flags;
   71 #define PCB_DBREGS      0x02    /* process using debug registers */
   72 #define PCB_FPUINITDONE 0x08    /* fpu state is initialized */
   73 #define PCB_GS32BIT     0x20    /* linux gs switch */
   74 #define PCB_32BIT       0x40    /* process has 32 bit context (segs etc) */
   75 #define PCB_FULLCTX     0x80    /* full context restore on sysret */
   76 
   77         caddr_t pcb_onfault;    /* copyin/out fault recovery */
   78 
   79         /* 32-bit segment descriptor */
   80         struct user_segment_descriptor  pcb_gs32sd;
   81 };
   82 
   83 #ifdef _KERNEL
   84 struct trapframe;
   85 
   86 void    makectx(struct trapframe *, struct pcb *);
   87 void    savectx(struct pcb *);
   88 #endif
   89 
   90 #endif /* _AMD64_PCB_H_ */

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FreeBSD/Linux Kernel Cross Reference sys/amd64/include/pcb.h

FreeBSD/Linux Kernel Cross Reference
sys/amd64/include/pcb.h