/*	$NetBSD: linux_signal.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_SIGNAL_H
#define _AARCH64_LINUX_SIGNAL_H

#define LINUX_SIGHUP		1
#define LINUX_SIGINT		2
#define LINUX_SIGQUIT		3
#define LINUX_SIGILL		4
#define LINUX_SIGTRAP		5
#define LINUX_SIGABRT		6
#define LINUX_SIGIOT		6
#define LINUX_SIGBUS		7
#define LINUX_SIGFPE		8
#define LINUX_SIGKILL		9
#define LINUX_SIGUSR1		10
#define LINUX_SIGSEGV		11
#define LINUX_SIGUSR2		12
#define LINUX_SIGPIPE		13
#define LINUX_SIGALRM		14
#define LINUX_SIGTERM		15
#define LINUX_SIGSTKFLT		16
#define LINUX_SIGCHLD		17
#define LINUX_SIGCONT		18
#define LINUX_SIGSTOP		19
#define LINUX_SIGTSTP		20
#define LINUX_SIGTTIN		21
#define LINUX_SIGTTOU		22
#define LINUX_SIGURG		23
#define LINUX_SIGXCPU		24
#define LINUX_SIGXFSZ		25
#define LINUX_SIGVTALRM		26
#define LINUX_SIGPROF		27
#define LINUX_SIGWINCH		28
#define LINUX_SIGIO		29
#define LINUX_SIGPWR		30
#define LINUX_SIGSYS		31
/* SIGCANCEL=32, SIGSETXID=33 */
#define LINUX_SIGRTMIN		34
#define LINUX_SIGRTMAX		64


#define LINUX_SS_ONSTACK	1
#define LINUX_SS_DISABLE	2

#define LINUX_SA_NOCLDSTOP	0x00000001
#define LINUX_SA_NOCLDWAIT	0x00000002
#define LINUX_SA_SIGINFO	0x00000004
#define LINUX_SA_ONSTACK	0x08000000
#define LINUX_SA_RESTART	0x10000000
#define LINUX_SA_NOMASK		0x40000000
#define LINUX_SA_ONESHOT	0x80000000
#define LINUX_SA_ALLBITS	0xd8000007


#define LINUX_SIG_BLOCK		0
#define LINUX_SIG_UNBLOCK	1
#define LINUX_SIG_SETMASK	2

#define LINUX__NSIG		(LINUX_SIGRTMAX + 1)
#define LINUX__NSIG_BPW		64
#define LINUX__NSIG_WORDS	(LINUX__NSIG / LINUX__NSIG_BPW)

#define	LINUX_MINSIGSTKSZ	2048

typedef struct {
	unsigned long sig[LINUX__NSIG_WORDS];
} linux_sigset_t;

typedef void (*linux_handler_t)(int);

struct linux_sigaction {
	linux_handler_t linux_sa_handler;
	unsigned long linux_sa_flags;

	/*
	 * linux/arm64 doesn't use sa_restorer,
	 * but struct sigaction has it for compatibility.
	 */
	void (*linux_sa_restorer)(void);

	linux_sigset_t linux_sa_mask;
};

typedef struct linux_sigaltstack {
	void *ss_sp;
	int ss_flags;
	size_t ss_size;
} linux_stack_t;

#endif /* !_AARCH64_LINUX_SIGNAL_H */