1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
|
/*-
* Copyright (c) 2001 Jake Burkholder.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* $FreeBSD$
*/
#ifndef _MACHINE_PCB_H_
#define _MACHINE_PCB_H_
#ifndef LOCORE
#include <machine/debug_monitor.h>
#include <machine/vfp.h>
struct trapframe;
struct pcb {
uint64_t pcb_x[30];
uint64_t pcb_lr;
uint64_t _reserved; /* Was pcb_pc */
/* These two need to be in order as we access them together */
uint64_t pcb_sp;
uint64_t pcb_tpidr_el0;
uint64_t pcb_tpidrro_el0;
/* Fault handler, the error value is passed in x0 */
vm_offset_t pcb_onfault;
u_int pcb_flags;
#define PCB_SINGLE_STEP_SHIFT 0
#define PCB_SINGLE_STEP (1 << PCB_SINGLE_STEP_SHIFT)
struct vfpstate *pcb_fpusaved;
int pcb_fpflags;
#define PCB_FP_STARTED 0x01
#define PCB_FP_KERN 0x02
#define PCB_FP_NOSAVE 0x04
/* The bits passed to userspace in get_fpcontext */
#define PCB_FP_USERMASK (PCB_FP_STARTED)
u_int pcb_vfpcpu; /* Last cpu this thread ran VFP code */
/*
* The userspace VFP state. The pcb_fpusaved pointer will point to
* this unless the kernel has allocated a VFP context.
* Place last to simplify the asm to access the rest if the struct.
*/
struct vfpstate pcb_fpustate;
struct debug_monitor_state pcb_dbg_regs;
};
#ifdef _KERNEL
void makectx(struct trapframe *tf, struct pcb *pcb);
int savectx(struct pcb *pcb) __returns_twice;
#endif
#endif /* !LOCORE */
#endif /* !_MACHINE_PCB_H_ */
|
