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      1 /*	$NetBSD: linux_siginfo.h,v 1.1 2021/09/23 06:56:27 ryo Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 2021 The NetBSD Foundation, Inc.
      5  * All rights reserved.
      6  *
      7  * Redistribution and use in source and binary forms, with or without
      8  * modification, are permitted provided that the following conditions
      9  * are met:
     10  * 1. Redistributions of source code must retain the above copyright
     11  *    notice, this list of conditions and the following disclaimer.
     12  * 2. Redistributions in binary form must reproduce the above copyright
     13  *    notice, this list of conditions and the following disclaimer in the
     14  *    documentation and/or other materials provided with the distribution.
     15  *
     16  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     17  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     18  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     19  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     20  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     21  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     22  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     23  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     24  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     25  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     26  * POSSIBILITY OF SUCH DAMAGE.
     27  */
     28 
     29 #ifndef _AARCH64_LINUX_SIGINFO_H
     30 #define _AARCH64_LINUX_SIGINFO_H
     31 
     32 #define LINUX___ARCH_SI_PREAMBLE_SIZE	(4 * sizeof(int))
     33 #define LINUX_SI_MAX_SIZE		128
     34 #define LINUX_SI_PAD_SIZE		\
     35 	((LINUX_SI_MAX_SIZE - LINUX___ARCH_SI_PREAMBLE_SIZE) / sizeof(int))
     36 
     37 typedef union linux_sigval {
     38 	int sival_int;
     39 	void *sival_ptr;
     40 } linux_sigval_t;
     41 
     42 typedef struct linux_siginfo {
     43 	int lsi_signo;
     44 	int lsi_errno;
     45 	int lsi_code;
     46 	union {
     47 		int _pad[LINUX_SI_PAD_SIZE];
     48 
     49 		/* kill() */
     50 		struct {
     51 			linux_pid_t _pid;
     52 			linux_uid_t _uid;
     53 		} _kill;
     54 
     55 		/* POSIX.1b signals */
     56 		struct {
     57 			linux_pid_t _pid;
     58 			linux_uid_t _uid;
     59 			linux_sigval_t _sigval;
     60 		} _rt;
     61 
     62 		/* POSIX.1b timers */
     63 		struct {
     64 			linux_timer_t _tid;
     65 			int _overrun;
     66 			char _pad[sizeof(linux_uid_t) - sizeof(int)];
     67 			linux_sigval_t _sigval;
     68 			int _sys_private;
     69 		} _timer;
     70 
     71 		/* SIGCHLD */
     72 		struct {
     73 			linux_pid_t _pid;
     74 			linux_uid_t _uid;
     75 			int _status;
     76 			linux_clock_t _utime;
     77 			linux_clock_t _stime;
     78 		} _sigchld;
     79 
     80 		/* SIGPOLL */
     81 		struct {
     82 			long _band;
     83 			int _fd;
     84 		} _sigpoll;
     85 
     86 		/* SIGILL, SIGFPE, SIGSEGV, SIGBUS, SIGTRAP, SIGEMT */
     87 		struct {
     88 			void *_addr;
     89 #define __ADDR_BND_PKEY_PAD	\
     90     (__alignof__(void *) < sizeof(short) ? sizeof(short) : __alignof__(void *))
     91 			union {
     92 				short _addr_lsb;
     93 				struct {
     94 					char _dummy_bnd[__ADDR_BND_PKEY_PAD];
     95 					void *_lower;
     96 					void *_upper;
     97 				} _addr_bnd;
     98 				struct {
     99 					char _dummy_pkey[__ADDR_BND_PKEY_PAD];
    100 					uint32_t _pkey;
    101 				} _addr_pkey;
    102 			};
    103 		} _sigfault;
    104 	} _sidata;
    105 } linux_siginfo_t;
    106 
    107 #endif /* !_AARCH64_LINUX_SIGINFO_H */
    108