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/arm/include/pcb.h

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    1 /*      $NetBSD: pcb.h,v 1.10 2003/10/13 21:46:39 scw Exp $     */
    2 
    3 /*-
    4  * Copyright (c) 2001 Matt Thomas <matt@3am-software.com>.
    5  * Copyright (c) 1994 Mark Brinicombe.
    6  * All rights reserved.
    7  *
    8  * Redistribution and use in source and binary forms, with or without
    9  * modification, are permitted provided that the following conditions
   10  * are met:
   11  * 1. Redistributions of source code must retain the above copyright
   12  *    notice, this list of conditions and the following disclaimer.
   13  * 2. Redistributions in binary form must reproduce the above copyright
   14  *    notice, this list of conditions and the following disclaimer in the
   15  *    documentation and/or other materials provided with the distribution.
   16  * 3. All advertising materials mentioning features or use of this software
   17  *    must display the following acknowledgement:
   18  *      This product includes software developed by the RiscBSD team.
   19  * 4. The name "RiscBSD" nor the name of the author may be used to
   20  *    endorse or promote products derived from this software without specific
   21  *    prior written permission.
   22  *
   23  * THIS SOFTWARE IS PROVIDED BY RISCBSD ``AS IS'' AND ANY EXPRESS OR IMPLIED
   24  * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
   25  * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
   26  * IN NO EVENT SHALL RISCBSD OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
   27  * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
   28  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
   29  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   30  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   31  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   32  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   33  * SUCH DAMAGE.
   34  *
   35  * $FreeBSD: releng/11.1/sys/arm/include/pcb.h 317005 2017-04-16 07:33:47Z mmel $
   36  */
   37 
   38 #ifndef _MACHINE_PCB_H_
   39 #define _MACHINE_PCB_H_
   40 
   41 #include <machine/frame.h>
   42 #include <machine/vfp.h>
   43 
   44 
   45 /*
   46  * WARNING!
   47  * Keep pcb_regs first for faster access in switch.S
   48  */
   49 struct pcb {
   50         struct switchframe pcb_regs;            /* CPU state */
   51         u_int   pcb_flags;
   52 #define PCB_OWNFPU      0x00000001
   53 #define PCB_NOALIGNFLT  0x00000002
   54         caddr_t pcb_onfault;                    /* On fault handler */
   55         vm_offset_t     pcb_pagedir;            /* TTB0 value */
   56         /*
   57          * XXX:
   58          * Variables pcb_pl1vec, pcb_l1vec, pcb_dacr are used solely
   59          * by old PMAP. Keep them here for PCB binary compatibility
   60          * between old and new PMAP.
   61          */
   62         uint32_t *pcb_pl1vec;                   /* PTR to vector_base L1 entry*/
   63         uint32_t pcb_l1vec;                     /* Value to stuff on ctx sw */
   64         u_int   pcb_dacr;                       /* Domain Access Control Reg */
   65 
   66         struct vfp_state pcb_vfpstate;          /* VP/NEON state */
   67         u_int pcb_vfpcpu;                       /* VP/NEON last cpu */
   68 } __aligned(8); /*
   69                  * We need the PCB to be aligned on 8 bytes, as we may
   70                  * access it using ldrd/strd, and ARM ABI require it
   71                  * to by aligned on 8 bytes.
   72                  */
   73 
   74 /*
   75  * No additional data for core dumps.
   76  */
   77 struct md_coredump {
   78         int     md_empty;
   79 };
   80 
   81 void    makectx(struct trapframe *tf, struct pcb *pcb);
   82 
   83 #ifdef _KERNEL
   84 
   85 void    savectx(struct pcb *) __returns_twice;
   86 #endif  /* _KERNEL */
   87 
   88 #endif  /* !_MACHINE_PCB_H_ */

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