1/* $OpenBSD: pcb.h,v 1.8 2018/01/26 16:22:20 kettenis Exp $ */
2/* $NetBSD: pcb.h,v 1.10 2003/10/13 21:46:39 scw Exp $ */
3
4/*
5 * Copyright (c) 2001 Matt Thomas <matt@3am-software.com>.
6 * Copyright (c) 1994 Mark Brinicombe.
7 * All rights reserved.
8 *
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
11 * are met:
12 * 1. Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
14 * 2. Redistributions in binary form must reproduce the above copyright
15 * notice, this list of conditions and the following disclaimer in the
16 * documentation and/or other materials provided with the distribution.
17 * 3. All advertising materials mentioning features or use of this software
18 * must display the following acknowledgement:
19 * This product includes software developed by the RiscBSD team.
20 * 4. The name "RiscBSD" nor the name of the author may be used to
21 * endorse or promote products derived from this software without specific
22 * prior written permission.
23 *
24 * THIS SOFTWARE IS PROVIDED BY RISCBSD ``AS IS'' AND ANY EXPRESS OR IMPLIED
25 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
26 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
27 * IN NO EVENT SHALL RISCBSD OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
28 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
29 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
30 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
34 * SUCH DAMAGE.
35 */
36
37#ifndef _ARM_PCB_H_
38#define _ARM_PCB_H_
39
40#include <machine/frame.h>
41
42#include <arm/pte.h>
43#include <arm/reg.h>
44
45struct trapframe;
46
47struct pcb_arm32 {
48 paddr_t pcb32_pagedir; /* PT hooks */
49 pd_entry_t *pcb32_pl1vec; /* PTR to vector_base L1 entry*/
50 pd_entry_t pcb32_l1vec; /* Value to stuff on ctx sw */
51 u_int pcb32_dacr; /* Domain Access Control Reg */
52 void *pcb32_cstate; /* &pmap->pm_cstate */
53 /*
54 * WARNING!
55 * cpuswitch.S relies on pcb32_r8 being quad-aligned in struct pcb
56 * (due to the use of "strd" when compiled for XSCALE)
57 */
58 u_int pcb32_r8; /* used */
59 u_int pcb32_r9; /* used */
60 u_int pcb32_r10; /* used */
61 u_int pcb32_r11; /* used */
62 u_int pcb32_r12; /* used */
63 u_int pcb32_sp; /* used */
64 u_int pcb32_lr;
65 u_int pcb32_pc;
66 u_int pcb32_und_sp;
67};
68#define pcb_pagedir pcb_un.un_32.pcb32_pagedir
69#define pcb_pl1vec pcb_un.un_32.pcb32_pl1vec
70#define pcb_l1vec pcb_un.un_32.pcb32_l1vec
71#define pcb_dacr pcb_un.un_32.pcb32_dacr
72#define pcb_cstate pcb_un.un_32.pcb32_cstate
73
74/*
75 * WARNING!
76 * See warning for struct pcb_arm32, above, before changing struct pcb!
77 */
78struct pcb {
79 u_int pcb_flags;
80#define PCB_FPU 0x00000001 /* Process had FPU initialized */
81 struct trapframe *pcb_tf;
82 caddr_t pcb_onfault; /* On fault handler */
83 union {
84 struct pcb_arm32 un_32;
85 } pcb_un;
86 struct fpreg pcb_fpstate; /* Floating Point state */
87 struct cpu_info *pcb_fpcpu;
88 void *pcb_tcb;
89};
90
91#endif /* _ARM_PCB_H_ */