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

     /*-
      * Copyright (c) 1990 The Regents of the University of California.
      * All rights reserved.
      *
      * This code is derived from software contributed to Berkeley by
      * William Jolitz.
      *
      * Redistribution and use in source and binary forms, with or without
      * modification, are permitted provided that the following conditions
     * are met:
     * 1. Redistributions of source code must retain the above copyright
     *    notice, this list of conditions and the following disclaimer.
     * 2. Redistributions in binary form must reproduce the above copyright
     *    notice, this list of conditions and the following disclaimer in the
     *    documentation and/or other materials provided with the distribution.
     * 3. All advertising materials mentioning features or use of this software
     *    must display the following acknowledgement:
     *      This product includes software developed by the University of
     *      California, Berkeley and its contributors.
     * 4. Neither the name of the University nor the names of its contributors
     *    may be used to endorse or promote products derived from this software
     *    without specific prior written permission.
     *
     * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     * SUCH DAMAGE.
     *
     *      from: @(#)pcb.h 5.10 (Berkeley) 5/12/91
     * $FreeBSD$
     */
    
    #ifndef _I386_PCB_H_
    #define _I386_PCB_H_
    
    /*
     * Intel 386 process control block
     */
    #include <machine/globals.h>
    #include <machine/npx.h>
    
    struct pcb {
            int     pcb_cr3;
            int     pcb_edi;
            int     pcb_esi;
            int     pcb_ebp;
            int     pcb_esp;
            int     pcb_ebx;
            int     pcb_eip;
    
            int     pcb_dr0;
            int     pcb_dr1;
            int     pcb_dr2;
            int     pcb_dr3;
            int     pcb_dr6;
            int     pcb_dr7;
    
    #ifdef USER_LDT
            struct  pcb_ldt *pcb_ldt;       /* per process (user) LDT */
    #else
            struct  pcb_ldt *pcb_ldt_dontuse;
    #endif
            union   savefpu pcb_save;
            u_char  pcb_flags;
    #define FP_SOFTFP       0x01    /* process using software fltng pnt emulator */
    #define PCB_DBREGS      0x02    /* process using debug registers */
            caddr_t pcb_onfault;    /* copyin/out fault recovery */
    #ifdef SMP
            u_long  pcb_mpnest;
    #else
            u_long  pcb_mpnest_dontuse;
    #endif
            int     pcb_gs;
            struct  pcb_ext *pcb_ext;       /* optional pcb extension */
            u_long  __pcb_spare[3]; /* adjust to avoid core dump size changes */
    };
    
    /*
     * The pcb is augmented with machine-dependent additional data for
     * core dumps. For the i386: ???
     */
    struct md_coredump {
    };
    
    #ifdef _KERNEL
    
    #ifndef curpcb
    extern struct pcb *curpcb;              /* our current running pcb */
    #endif
    
    void    savectx __P((struct pcb *));
    #endif
   
   #endif /* _I386_PCB_H_ */

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