/*      $NetBSD: linux_siginfo.h,v 1.1 2021/09/23 06:56:27 ryo Exp $    */

/*-
 * Copyright (c) 2021 The NetBSD Foundation, Inc.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 */

#ifndef _AARCH64_LINUX_SIGINFO_H
#define _AARCH64_LINUX_SIGINFO_H

#define LINUX___ARCH_SI_PREAMBLE_SIZE   (4 * sizeof(int))
#define LINUX_SI_MAX_SIZE               128
#define LINUX_SI_PAD_SIZE               \
        ((LINUX_SI_MAX_SIZE - LINUX___ARCH_SI_PREAMBLE_SIZE) / sizeof(int))

typedef union linux_sigval {
        int sival_int;
        void *sival_ptr;
} linux_sigval_t;

typedef struct linux_siginfo {
        int lsi_signo;
        int lsi_errno;
        int lsi_code;
        union {
                int _pad[LINUX_SI_PAD_SIZE];

                /* kill() */
                struct {
                        linux_pid_t _pid;
                        linux_uid_t _uid;
                } _kill;

                /* POSIX.1b signals */
                struct {
                        linux_pid_t _pid;
                        linux_uid_t _uid;
                        linux_sigval_t _sigval;
                } _rt;

                /* POSIX.1b timers */
                struct {
                        linux_timer_t _tid;
                        int _overrun;
                        char _pad[sizeof(linux_uid_t) - sizeof(int)];
                        linux_sigval_t _sigval;
                        int _sys_private;
                } _timer;

                /* SIGCHLD */
                struct {
                        linux_pid_t _pid;
                        linux_uid_t _uid;
                        int _status;
                        linux_clock_t _utime;
                        linux_clock_t _stime;
                } _sigchld;

                /* SIGPOLL */
                struct {
                        long _band;
                        int _fd;
                } _sigpoll;

                /* SIGILL, SIGFPE, SIGSEGV, SIGBUS, SIGTRAP, SIGEMT */
                struct {
                        void *_addr;
#define __ADDR_BND_PKEY_PAD     \
    (__alignof__(void *) < sizeof(short) ? sizeof(short) : __alignof__(void *))
                        union {
                                short _addr_lsb;
                                struct {
                                        char _dummy_bnd[__ADDR_BND_PKEY_PAD];
                                        void *_lower;
                                        void *_upper;
                                } _addr_bnd;
                                struct {
                                        char _dummy_pkey[__ADDR_BND_PKEY_PAD];
                                        uint32_t _pkey;
                                } _addr_pkey;
                        };
                } _sigfault;
        } _sidata;
} linux_siginfo_t;

#endif /* !_AARCH64_LINUX_SIGINFO_H */