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_ */
92