/*      $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 */