70 lines
1.8 KiB
C
70 lines
1.8 KiB
C
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/*
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* Copyright (C) 2012 ARM Ltd.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef __ASM_SIGCONTEXT_H
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#define __ASM_SIGCONTEXT_H
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#include <linux/types.h>
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/*
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* Signal context structure - contains all info to do with the state
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* before the signal handler was invoked.
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*/
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struct sigcontext {
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__u64 fault_address;
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/* AArch64 registers */
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__u64 regs[31];
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__u64 sp;
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__u64 pc;
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__u64 pstate;
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/* 4K reserved for FP/SIMD state and future expansion */
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__u8 __reserved[4096] __attribute__((__aligned__(16)));
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};
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/*
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* Header to be used at the beginning of structures extending the user
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* context. Such structures must be placed after the rt_sigframe on the stack
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* and be 16-byte aligned. The last structure must be a dummy one with the
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* magic and size set to 0.
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*/
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struct _aarch64_ctx {
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__u32 magic;
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__u32 size;
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};
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#define FPSIMD_MAGIC 0x46508001
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struct fpsimd_context {
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struct _aarch64_ctx head;
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__u32 fpsr;
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__u32 fpcr;
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__uint128_t vregs[32];
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};
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#ifdef __KERNEL__
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/*
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* Auxiliary context saved in the sigcontext.__reserved array. Not exported to
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* user space as it will change with the addition of new context. User space
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* should check the magic/size information.
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*/
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struct aux_context {
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struct fpsimd_context fpsimd;
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/* additional context to be added before "end" */
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struct _aarch64_ctx end;
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};
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#endif
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#endif
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