FreeBSD/Linux Kernel Cross Reference
sys/arm/include/pcb.h
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: releng/11.1/sys/arm/include/pcb.h 317005 2017-04-16 07:33:47Z mmel $
36 */
37
38 #ifndef _MACHINE_PCB_H_
39 #define _MACHINE_PCB_H_
40
41 #include <machine/frame.h>
42 #include <machine/vfp.h>
43
44
45 /*
46 * WARNING!
47 * Keep pcb_regs first for faster access in switch.S
48 */
49 struct 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; /* TTB0 value */
56 /*
57 * XXX:
58 * Variables pcb_pl1vec, pcb_l1vec, pcb_dacr are used solely
59 * by old PMAP. Keep them here for PCB binary compatibility
60 * between old and new PMAP.
61 */
62 uint32_t *pcb_pl1vec; /* PTR to vector_base L1 entry*/
63 uint32_t pcb_l1vec; /* Value to stuff on ctx sw */
64 u_int pcb_dacr; /* Domain Access Control Reg */
65
66 struct vfp_state pcb_vfpstate; /* VP/NEON state */
67 u_int pcb_vfpcpu; /* VP/NEON last cpu */
68 } __aligned(8); /*
69 * We need the PCB to be aligned on 8 bytes, as we may
70 * access it using ldrd/strd, and ARM ABI require it
71 * to by aligned on 8 bytes.
72 */
73
74 /*
75 * No additional data for core dumps.
76 */
77 struct md_coredump {
78 int md_empty;
79 };
80
81 void makectx(struct trapframe *tf, struct pcb *pcb);
82
83 #ifdef _KERNEL
84
85 void savectx(struct pcb *) __returns_twice;
86 #endif /* _KERNEL */
87
88 #endif /* !_MACHINE_PCB_H_ */
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