/*
 * File      : libc_signal.h
 * This file is part of RT-Thread RTOS
 * COPYRIGHT (C) 2017, RT-Thread Development Team
 *
 *  This program is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation; either version 2 of the License, or
 *  (at your option) any later version.
 *
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License along
 *  with this program; if not, write to the Free Software Foundation, Inc.,
 *  51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * Change Logs:
 * Date           Author       Notes
 * 2017-09-12     Bernard      The first version
 */

#ifndef LIBC_SIGNAL_H__
#define LIBC_SIGNAL_H__


#ifdef __cplusplus
extern "C" {
#endif

#ifndef HAVE_SYS_SIGNALS
/*  Signal Generation and Delivery, P1003.1b-1993, p. 63
    NOTE: P1003.1c/D10, p. 34 adds sigev_notify_function and
          sigev_notify_attributes to the sigevent structure.  */

union sigval 
{
    int    sival_int;    /* Integer signal value */
    void  *sival_ptr;    /* Pointer signal value */
};

struct sigevent
{
    int          sigev_notify;               /* Notification type */
    int          sigev_signo;                /* Signal number */
    union sigval sigev_value;                /* Signal value */
    void         (*sigev_notify_function)( union sigval );
                                             /* Notification function */
    void         *sigev_notify_attributes;   /* Notification Attributes, really pthread_attr_t */
};

struct siginfo
{
    rt_uint8_t si_signo;
    rt_uint8_t si_code;
    rt_int16_t si_errno;

    union sigval si_value;
};
typedef struct siginfo siginfo_t;
#endif

#define SI_USER     0x01    /* Signal sent by kill(). */
#define SI_QUEUE    0x02    /* Signal sent by sigqueue(). */
#define SI_TIMER    0x03    /* Signal generated by expiration of a 
                               timer set by timer_settime(). */
#define SI_ASYNCIO  0x04    /* Signal generated by completion of an 
                               asynchronous I/O request. */
#define SI_MESGQ    0x05    /* Signal generated by arrival of a 
                               message on an empty message queue. */

#ifdef RT_USING_NEWLIB
#include <sys/signal.h>
#endif

#ifdef __CC_ARM
#include <signal.h>
typedef unsigned long sigset_t;

#define SIGHUP       1
// #define SIGINT       2
#define SIGQUIT      3
// #define SIGILL       4
#define SIGTRAP      5
// #define SIGABRT      6
#define SIGEMT       7
// #define SIGFPE       8
#define SIGKILL      9
#define SIGBUS      10
// #define SIGSEGV     11
#define SIGSYS      12
#define SIGPIPE     13
#define SIGALRM     14
// #define SIGTERM     15
#define SIGURG      16
#define SIGSTOP     17
#define SIGTSTP     18
#define SIGCONT     19
#define SIGCHLD     20
#define SIGTTIN     21
#define SIGTTOU     22
#define SIGPOLL     23
#define SIGWINCH    24
// #define SIGUSR1     25
// #define SIGUSR2     26
#define SIGRTMIN    27
#define SIGRTMAX    31
#define NSIG        32

#define SIG_SETMASK 0   /* set mask with sigprocmask() */
#define SIG_BLOCK   1   /* set of signals to block */
#define SIG_UNBLOCK 2   /* set of signals to, well, unblock */

typedef void (*_sig_func_ptr)(int);

struct sigaction 
{
    _sig_func_ptr sa_handler;
    sigset_t sa_mask;
    int sa_flags;
};

#define sigaddset(what,sig) (*(what) |= (1<<(sig)), 0)
#define sigdelset(what,sig) (*(what) &= ~(1<<(sig)), 0)
#define sigemptyset(what)   (*(what) = 0, 0)
#define sigfillset(what)    (*(what) = ~(0), 0)
#define sigismember(what,sig) (((*(what)) & (1<<(sig))) != 0)

int sigprocmask (int how, const sigset_t *set, sigset_t *oset);
int sigaction(int signum, const struct sigaction *act, struct sigaction *oldact);

#elif defined(__IAR_SYSTEMS_ICC__)
#include <signal.h>
typedef unsigned long sigset_t;

#define SIGHUP       1
#define SIGINT       2
#define SIGQUIT      3
#define SIGILL       4
#define SIGTRAP      5
// #define SIGABRT      6
#define SIGEMT       7
#define SIGFPE       8
#define SIGKILL      9
#define SIGBUS      10
#define SIGSEGV     11
#define SIGSYS      12
#define SIGPIPE     13
#define SIGALRM     14
#define SIGTERM     15
#define SIGURG      16
#define SIGSTOP     17
#define SIGTSTP     18
#define SIGCONT     19
#define SIGCHLD     20
#define SIGTTIN     21
#define SIGTTOU     22
#define SIGPOLL     23
#define SIGWINCH    24
#define SIGUSR1     25
#define SIGUSR2     26
#define SIGRTMIN    27
#define SIGRTMAX    31
#define NSIG        32

#define SIG_SETMASK 0   /* set mask with sigprocmask() */
#define SIG_BLOCK   1   /* set of signals to block */
#define SIG_UNBLOCK 2   /* set of signals to, well, unblock */

typedef void (*_sig_func_ptr)(int);

struct sigaction 
{
    _sig_func_ptr sa_handler;
    sigset_t sa_mask;
    int sa_flags;
};

#define sigaddset(what,sig) (*(what) |= (1<<(sig)), 0)
#define sigdelset(what,sig) (*(what) &= ~(1<<(sig)), 0)
#define sigemptyset(what)   (*(what) = 0, 0)
#define sigfillset(what)    (*(what) = ~(0), 0)
#define sigismember(what,sig) (((*(what)) & (1<<(sig))) != 0)

int sigprocmask (int how, const sigset_t *set, sigset_t *oset);
int sigaction(int signum, const struct sigaction *act, struct sigaction *oldact);
#endif

#ifdef __cplusplus
}
#endif

#endif