1/*-
2 * Copyright (c) 2001 Jake Burkholder.
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 */
26
27#ifdef __arm__
28#include <arm/pcb.h>
29#else /* !__arm__ */
30
31#ifndef _MACHINE_PCB_H_
32#define _MACHINE_PCB_H_
33
34#ifndef LOCORE
35
36#include <machine/debug_monitor.h>
37#include <machine/vfp.h>
38
39struct trapframe;
40
41/* The first register in pcb_x is x19 */
42#define PCB_X_START 19
43
44#define PCB_X19 0
45#define PCB_X20 1
46#define PCB_FP 10
47#define PCB_LR 11
48
49struct pcb {
50 uint64_t pcb_x[12];
51 /* These two need to be in order as we access them together */
52 uint64_t pcb_sp;
53 uint64_t pcb_tpidr_el0;
54 uint64_t pcb_tpidrro_el0;
55
56 /* Fault handler, the error value is passed in x0 */
57 vm_offset_t pcb_onfault;
58
59 u_int pcb_flags;
60#define PCB_SINGLE_STEP_SHIFT 0
61#define PCB_SINGLE_STEP (1 << PCB_SINGLE_STEP_SHIFT)
62 u_int pcb_sve_len; /* The SVE vector length */
63
64 struct vfpstate *pcb_fpusaved;
65 int pcb_fpflags;
66#define PCB_FP_STARTED 0x00000001
67#define PCB_FP_SVEVALID 0x00000002
68#define PCB_FP_KERN 0x40000000
69#define PCB_FP_NOSAVE 0x80000000
70/* The bits passed to userspace in get_fpcontext */
71#define PCB_FP_USERMASK (PCB_FP_STARTED | PCB_FP_SVEVALID)
72 u_int pcb_vfpcpu; /* Last cpu this thread ran VFP code */
73 void *pcb_svesaved;
74 uint64_t pcb_reserved[4];
75
76 /*
77 * The userspace VFP state. The pcb_fpusaved pointer will point to
78 * this unless the kernel has allocated a VFP context.
79 * Place last to simplify the asm to access the rest if the struct.
80 */
81 struct vfpstate pcb_fpustate;
82
83 struct debug_monitor_state pcb_dbg_regs;
84};
85
86#ifdef _KERNEL
87void makectx(struct trapframe *tf, struct pcb *pcb);
88void savectx(struct pcb *pcb) __returns_twice;
89#endif
90
91#endif /* !LOCORE */
92
93#endif /* !_MACHINE_PCB_H_ */
94
95#endif /* !__arm__ */