sigcontext.h revision 87fa4f8d01b4876a9153e6ad02021c9bfb8ef1ae 
1/*
2 * Copyright (C) 2012 ARM Ltd.
3 *
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License version 2 as
6 * published by the Free Software Foundation.
7 *
8 * This program is distributed in the hope that it will be useful,
9 * but WITHOUT ANY WARRANTY; without even the implied warranty of
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
11 * GNU General Public License for more details.
12 *
13 * You should have received a copy of the GNU General Public License
14 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
15 */
16#ifndef _UAPI__ASM_SIGCONTEXT_H
17#define _UAPI__ASM_SIGCONTEXT_H
18
19#include <linux/types.h>
20
21/*
22 * Signal context structure - contains all info to do with the state
23 * before the signal handler was invoked.
24 */
25struct sigcontext {
26	__u64 fault_address;
27	/* AArch64 registers */
28	__u64 regs[31];
29	__u64 sp;
30	__u64 pc;
31	__u64 pstate;
32	/* 4K reserved for FP/SIMD state and future expansion */
33	__u8 __reserved[4096] __attribute__((__aligned__(16)));
34};
35
36/*
37 * Header to be used at the beginning of structures extending the user
38 * context. Such structures must be placed after the rt_sigframe on the stack
39 * and be 16-byte aligned. The last structure must be a dummy one with the
40 * magic and size set to 0.
41 */
42struct _aarch64_ctx {
43	__u32 magic;
44	__u32 size;
45};
46
47#define FPSIMD_MAGIC	0x46508001
48
49struct fpsimd_context {
50	struct _aarch64_ctx head;
51	__u32 fpsr;
52	__u32 fpcr;
53	__uint128_t vregs[32];
54};
55
56
57#endif /* _UAPI__ASM_SIGCONTEXT_H */
58