sys/arch/arm/include/pcb.h

   1 /*      pcb.h,v 1.14.22.2 2007/11/06 23:15:05 matt 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
  36 #ifndef _ARM_PCB_H_
  37 #define _ARM_PCB_H_
  38
  39 #include <machine/frame.h>
  40
  41 #include <arm/arm32/pte.h>
  42 #include <arm/reg.h>
  43
  44 struct pcb_arm32 {
  45         /*
  46          * WARNING!
  47          * cpuswitchto.S relies on pcb32_r8 being quad-aligned in struct pcb
  48          * (due to the use of "strd" when compiled for XSCALE)
  49          */
  50         u_int   pcb32_r8 __aligned(8);          /* used */
  51         u_int   pcb32_r9;                       /* used */
  52         u_int   pcb32_r10;                      /* used */
  53         u_int   pcb32_r11;                      /* used */
  54         u_int   pcb32_r12;                      /* used */
  55         u_int   pcb32_sp;                       /* used */
  56         u_int   pcb32_lr;
  57         u_int   pcb32_pc;
  58
  59         /*
  60          * ARMv6 has two user thread/process id registers which can hold
  61          * any 32bit quanttiies.
  62          */
  63         u_int   pcb32_user_pid_rw;              /* p15, 0, Rd, c13, c0, 2 */
  64         u_int   pcb32_user_pid_ro;              /* p15, 0, Rd, c13, c0, 3 */
  65 };
  66 #define pcb_pagedir     pcb_un.un_32.pcb32_pagedir
  67 #define pcb_pl1vec      pcb_un.un_32.pcb32_pl1vec
  68 #define pcb_l1vec       pcb_un.un_32.pcb32_l1vec
  69 #define pcb_dacr        pcb_un.un_32.pcb32_dacr
  70 #define pcb_cstate      pcb_un.un_32.pcb32_cstate
  71 #define pcb_user_pid_rw pcb_un.un_32.pcb32_user_pid_rw
  72 #ifdef __PROG32
  73 #define pcb_ksp         pcb_un.un_32.pcb32_sp
  74 #endif
  75
  76 struct pcb_arm26 {
  77         struct  switchframe *pcb26_sf;
  78 };
  79 #define pcb_sf  pcb_un.un_26.pcb26_sf
  80 #ifdef __PROG26
  81 #define pcb_ksp         pcb_sf.sf_r13
  82 #endif
  83
  84 /*
  85  * WARNING!
  86  * See warning for struct pcb_arm32, above, before changing struct pcb!
  87  */
  88 struct pcb {
  89         union   {
  90                 struct  pcb_arm32 un_32;
  91                 struct  pcb_arm26 un_26;
  92         } pcb_un;
  93         void *  pcb_onfault;                    /* On fault handler */
  94         struct  vfpreg pcb_vfp;                 /* VFP registers */
  95         struct  vfpreg pcb_kernel_vfp;          /* kernel VFP state */
  96 };
  97
  98 /*
  99  * No additional data for core dumps.
 100  */
 101 struct md_coredump {
 102         int     md_empty;
 103 };
 104
 105 #endif  /* _ARM_PCB_H_ */