blob: 1328a2c143716e8cb2bcd427dc90f05ce4cdd3f3 (
plain)
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
82
83
|
/*
* Copyright (C) 2012 ARM Ltd.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef _UAPI__ASM_SIGCONTEXT_H
#define _UAPI__ASM_SIGCONTEXT_H
#include <linux/types.h>
/*
* Signal context structure - contains all info to do with the state
* before the signal handler was invoked.
*/
struct sigcontext {
__u64 fault_address;
/* AArch64 registers */
__u64 regs[31];
__u64 sp;
__u64 pc;
__u64 pstate;
/* 4K reserved for FP/SIMD state and future expansion */
__u8 __reserved[4096] __attribute__((__aligned__(16)));
};
/*
* Allocation of __reserved[]:
* (Note: records do not necessarily occur in the order shown here.)
*
* size description
*
* 0x210 fpsimd_context
* 0x10 esr_context
* 0x10 terminator (null _aarch64_ctx)
*
* 0xdd0 (reserved for future allocation)
*
* New records that can exceed this space need to be opt-in for userspace, so
* that an expanded signal frame is not generated unexpectedly. The mechanism
* for opting in will depend on the extension that generates each new record.
* The above table documents the maximum set and sizes of records than can be
* generated when userspace does not opt in for any such extension.
*/
/*
* Header to be used at the beginning of structures extending the user
* context. Such structures must be placed after the rt_sigframe on the stack
* and be 16-byte aligned. The last structure must be a dummy one with the
* magic and size set to 0.
*/
struct _aarch64_ctx {
__u32 magic;
__u32 size;
};
#define FPSIMD_MAGIC 0x46508001
struct fpsimd_context {
struct _aarch64_ctx head;
__u32 fpsr;
__u32 fpcr;
__uint128_t vregs[32];
};
/* ESR_EL1 context */
#define ESR_MAGIC 0x45535201
struct esr_context {
struct _aarch64_ctx head;
__u64 esr;
};
#endif /* _UAPI__ASM_SIGCONTEXT_H */
|