/*      $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 */