pcb.h revision 278614 
1/*	$NetBSD: pcb.h,v 1.10 2003/10/13 21:46:39 scw 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 * $FreeBSD: stable/10/sys/arm/include/pcb.h 278614 2015-02-12 04:15:55Z ian $
36 */
37
38#ifndef	_MACHINE_PCB_H_
39#define	_MACHINE_PCB_H_
40
41#include <machine/fp.h>
42#include <machine/frame.h>
43
44
45/*
46 * WARNING!
47 * Keep pcb_regs first for faster access in switch.S
48 */
49struct pcb {
50	struct switchframe pcb_regs;		/* CPU state */
51	u_int	pcb_flags;
52#define	PCB_OWNFPU	0x00000001
53#define PCB_NOALIGNFLT	0x00000002
54	caddr_t	pcb_onfault;			/* On fault handler */
55	vm_offset_t	pcb_pagedir;		/* PT hooks */
56	uint32_t *pcb_pl1vec;			/* PTR to vector_base L1 entry*/
57	uint32_t pcb_l1vec;			/* Value to stuff on ctx sw */
58	u_int	pcb_dacr;			/* Domain Access Control Reg */
59
60	struct vfp_state pcb_vfpstate;          /* VP/NEON state */
61	u_int pcb_vfpcpu;                       /* VP/NEON last cpu */
62} __aligned(8); /*
63		 * We need the PCB to be aligned on 8 bytes, as we may
64		 * access it using ldrd/strd, and ARM ABI require it
65		 * to by aligned on 8 bytes.
66		 */
67
68/*
69 * No additional data for core dumps.
70 */
71struct md_coredump {
72	int	md_empty;
73};
74
75void	makectx(struct trapframe *tf, struct pcb *pcb);
76
77#ifdef _KERNEL
78
79void    savectx(struct pcb *) __returns_twice;
80#endif	/* _KERNEL */
81
82#endif	/* !_MACHINE_PCB_H_ */
83