sigcontext.h

Go to the documentation of this file.

/*
 * 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)));
};

/*
 * 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];
};


#endif /* _UAPI__ASM_SIGCONTEXT_H */