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_faultinfo {
45           void *pfi_faultptep;
46           vaddr_t pfi_faultaddr;
47           u_int pfi_repeats;
48           pid_t pfi_lastpid;
49           uint8_t pfi_faulttype;
50 };
51 
52 #define   pcb_ksp             pcb_sp
53 
54 struct pcb {
55           /*
56            * WARNING!
57            * cpuswitchto.S relies on pcb_r8 being quad-aligned
58            * (due to the use of "strd" when compiled for XSCALE)
59            */
60           u_int     pcb_r8 __aligned(8);                    /* used */
61           u_int     pcb_r9;                                 /* used */
62           u_int     pcb_r10;                      /* used */
63           u_int     pcb_r11;                      /* used */
64           u_int     pcb_r12;                      /* used */
65           u_int     pcb_sp;                                 /* used */
66           u_int     pcb_lr;
67           u_int     pcb_pc;
68 
69           /*
70            * ARMv6 has two user thread/process id registers which can hold
71            * any 32bit quanttiies.
72            */
73           u_int     pcb_user_pid_rw;              /* p15, 0, Rd, c13, c0, 2 */
74           u_int     pcb_user_pid_ro;              /* p15, 0, Rd, c13, c0, 3 */
75 
76           void *    pcb_onfault;                            /* On fault handler */
77           struct    vfpreg pcb_vfp;                         /* VFP registers */
78           struct    vfpreg pcb_kernel_vfp;                  /* kernel VFP state */
79           struct  pcb_faultinfo pcb_faultinfo;
80 };
81 
82 /*
83  * No additional data for core dumps.
84  */
85 struct md_coredump {
86           int       md_empty;
87 };
88 
89 #endif    /* _ARM_PCB_H_ */
90