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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  */
25 struct 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  */
42 struct _aarch64_ctx {
43 	__u32 magic;
44 	__u32 size;
45 };
46 
47 #define FPSIMD_MAGIC	0x46508001
48 
49 struct fpsimd_context {
50 	struct _aarch64_ctx head;
51 	__u32 fpsr;
52 	__u32 fpcr;
53 	__uint128_t vregs[32];
54 };
55 
56 /* ESR_EL1 context */
57 #define ESR_MAGIC	0x45535201
58 
59 struct esr_context {
60 	struct _aarch64_ctx head;
61 	__u64 esr;
62 };
63 
64 #endif /* _UAPI__ASM_SIGCONTEXT_H */
65