pcb.h revision 1.27 
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
44struct 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
76struct 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 */
88struct 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 */
101struct md_coredump {
102	int	md_empty;
103};
104
105#endif	/* _ARM_PCB_H_ */
106