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/10.1/sys/arm/include/pcb.h 266409 2014-05-18 16:39:47Z ian $
   36  */
   37 
   38 #ifndef _MACHINE_PCB_H_
   39 #define _MACHINE_PCB_H_
   40 
   41 #include <machine/fp.h>
   42 
   43 
   44 struct trapframe;
   45 
   46 struct pcb_arm32 {
   47         vm_offset_t     pcb32_pagedir;          /* PT hooks */
   48         uint32_t *pcb32_pl1vec;         /* PTR to vector_base L1 entry*/
   49         uint32_t pcb32_l1vec;                   /* Value to stuff on ctx sw */
   50         u_int   pcb32_dacr;                     /* Domain Access Control Reg */
   51         /*
   52          * WARNING!
   53          * cpuswitch.S relies on pcb32_r8 being quad-aligned in struct pcb
   54          * (due to the use of "strd" when compiled for XSCALE)
   55          */
   56         u_int   pcb32_r8;                       /* used */
   57         u_int   pcb32_r9;                       /* used */
   58         u_int   pcb32_r10;                      /* used */
   59         u_int   pcb32_r11;                      /* used */
   60         u_int   pcb32_r12;                      /* used */
   61         u_int   pcb32_sp;                       /* used */
   62         u_int   pcb32_lr;
   63         u_int   pcb32_pc;
   64 };
   65 #define pcb_pagedir     un_32.pcb32_pagedir
   66 #define pcb_pl1vec      un_32.pcb32_pl1vec
   67 #define pcb_l1vec       un_32.pcb32_l1vec
   68 #define pcb_dacr        un_32.pcb32_dacr
   69 #define pcb_cstate      un_32.pcb32_cstate
   70 
   71 /*
   72  * WARNING!
   73  * See warning for struct pcb_arm32, above, before changing struct pcb!
   74  */
   75 struct pcb {
   76         u_int   pcb_flags;
   77 #define PCB_OWNFPU      0x00000001
   78 #define PCB_NOALIGNFLT  0x00000002
   79         caddr_t pcb_onfault;                    /* On fault handler */
   80         struct  pcb_arm32 un_32;
   81         struct vfp_state pcb_vfpstate;          /* VP/NEON state */
   82         u_int pcb_vfpcpu;                       /* VP/NEON last cpu */
   83 } __aligned(8); /* 
   84                  * We need the PCB to be aligned on 8 bytes, as we may
   85                  * access it using ldrd/strd, and some CPUs require it
   86                  * to by aligned on 8 bytes.
   87                  */
   88 
   89 /*
   90  * No additional data for core dumps.
   91  */
   92 struct md_coredump {
   93         int     md_empty;
   94 };
   95 
   96 void    makectx(struct trapframe *tf, struct pcb *pcb);
   97 
   98 #ifdef _KERNEL
   99 
  100 void    savectx(struct pcb *) __returns_twice;
  101 #endif  /* _KERNEL */
  102 
  103 #endif  /* !_MACHINE_PCB_H_ */

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

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