pcb.h revision 1.24 
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#include <machine/fp.h>
41
42#include <arm/arm32/pte.h>
43#include <arm/reg.h>
44
45struct pcb_arm32 {
46	/*
47	 * WARNING!
48	 * cpuswitchto.S relies on pcb32_r8 being quad-aligned in struct pcb
49	 * (due to the use of "strd" when compiled for XSCALE)
50	 */
51	u_int	pcb32_r8 __aligned(8);		/* used */
52	u_int	pcb32_r9;			/* used */
53	u_int	pcb32_r10;			/* used */
54	u_int	pcb32_r11;			/* used */
55	u_int	pcb32_r12;			/* used */
56	u_int	pcb32_sp;			/* used */
57	u_int	pcb32_lr;
58	u_int	pcb32_pc;
59
60	/*
61	 * ARMv6 has two user thread/process id registers which can hold
62	 * any 32bit quanttiies.
63	 */
64	u_int	pcb32_user_pid_rw;		/* p15, 0, Rd, c13, c0, 2 */
65	u_int	pcb32_user_pid_ro;		/* p15, 0, Rd, c13, c0, 3 */
66};
67#define	pcb_pagedir	pcb_un.un_32.pcb32_pagedir
68#define	pcb_pl1vec	pcb_un.un_32.pcb32_pl1vec
69#define	pcb_l1vec	pcb_un.un_32.pcb32_l1vec
70#define	pcb_dacr	pcb_un.un_32.pcb32_dacr
71#define	pcb_cstate	pcb_un.un_32.pcb32_cstate
72#define	pcb_user_pid_rw	pcb_un.un_32.pcb32_user_pid_rw
73#ifdef __PROG32
74#define	pcb_sp		pcb_un.un_32.pcb32_sp
75#endif
76
77struct pcb_arm26 {
78	struct	switchframe *pcb26_sf;
79};
80#define	pcb_sf	pcb_un.un_26.pcb26_sf
81#ifdef __PROG26
82#define	pcb_sp		pcb_sf.sf_r13
83#endif
84
85/*
86 * WARNING!
87 * See warning for struct pcb_arm32, above, before changing struct pcb!
88 */
89struct pcb {
90	union	{
91		struct	pcb_arm32 un_32;
92		struct	pcb_arm26 un_26;
93	} pcb_un;
94	void *	pcb_onfault;			/* On fault handler */
95	struct	fpe_sp_state pcb_fpstate;	/* FPA Floating Point state */
96	struct	vfpreg pcb_vfp;			/* VFP registers */
97};
98#define	pcb_ff	pcb_fpstate			/* for arm26 */
99
100/*
101 * No additional data for core dumps.
102 */
103struct md_coredump {
104	int	md_empty;
105};
106
107#endif	/* _ARM_PCB_H_ */
108