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/*

 * This file is subject to the terms and conditions of the GNU General Public

 * License.  See the file "COPYING" in the main directory of this archive

 * for more details.

 *

 * Copyright (C) 1998, 1999, 2003 by Ralf Baechle

 */

#ifndef _ASM_SIGINFO_H

#define _ASM_SIGINFO_H

#include <linux/types.h>

/* This structure matches IRIX 32/n32 ABIs for binary compatibility. */

typedef union sigval {

        int sival_int;

        void *sival_ptr;

} sigval_t;

/* This structure matches IRIX 32/n32 ABIs for binary compatibility but

   has Linux extensions.  */

#define SI_MAX_SIZE     128

#define SI_PAD_SIZE     ((SI_MAX_SIZE/sizeof(int)) - 3)

typedef struct siginfo {

        int si_signo;

        int si_code;

        int si_errno;

        union {

                int _pad[SI_PAD_SIZE];

                /* kill() */

                struct {

                        pid_t _pid;             /* sender's pid */

                        uid_t _uid;             /* sender's uid */

                } _kill;

                /* SIGCHLD */

                struct {

                        pid_t _pid;             /* which child */

                        uid_t _uid;             /* sender's uid */

                        clock_t _utime;

                        int _status;            /* exit code */

                        clock_t _stime;

                } _sigchld;

                /* IRIX SIGCHLD */

                struct {

                        pid_t _pid;             /* which child */

                        clock_t _utime;

                        int _status;            /* exit code */

                        clock_t _stime;

                } _irix_sigchld;

                /* SIGILL, SIGFPE, SIGSEGV, SIGBUS */

                struct {

                        void *_addr; /* faulting insn/memory ref. */

                } _sigfault;

                /* SIGPOLL, SIGXFSZ (To do ...)  */

                struct {

                        int _band;      /* POLL_IN, POLL_OUT, POLL_MSG */

                        int _fd;

                } _sigpoll;

                /* POSIX.1b timers */

                struct {

                        unsigned int _timer1;

                        unsigned int _timer2;

                } _timer;

                /* POSIX.1b signals */

                struct {

                        pid_t _pid;             /* sender's pid */

                        uid_t _uid;             /* sender's uid */

                        sigval_t _sigval;

                } _rt;

        } _sifields;

} siginfo_t;

/*

 * How these fields are to be accessed.

 */

#define si_pid          _sifields._kill._pid

#define si_uid          _sifields._kill._uid

#define si_status       _sifields._sigchld._status

#define si_utime        _sifields._sigchld._utime

#define si_stime        _sifields._sigchld._stime

#define si_value        _sifields._rt._sigval

#define si_int          _sifields._rt._sigval.sival_int

#define si_ptr          _sifields._rt._sigval.sival_ptr

#define si_addr         _sifields._sigfault._addr

#define si_band         _sifields._sigpoll._band

#define si_fd           _sifields._sigpoll._fd

#ifdef __KERNEL__

#define __SI_MASK       0xffff0000

#define __SI_KILL       (0 << 16)

#define __SI_TIMER      (1 << 16)

#define __SI_POLL       (2 << 16)

#define __SI_FAULT      (3 << 16)

#define __SI_CHLD       (4 << 16)

#define __SI_RT         (5 << 16)

#define __SI_CODE(T,N)  ((T) << 16 | ((N) & 0xffff))

#else

#define __SI_KILL       0

#define __SI_TIMER      0

#define __SI_POLL       0

#define __SI_FAULT      0

#define __SI_CHLD       0

#define __SI_RT         0

#define __SI_CODE(T,N)  (N)

#endif

/*

 * si_code values

 * Again these have been choosen to be IRIX compatible.

 */

#define SI_USER         0        /* sent by kill, sigsend, raise */

#define SI_KERNEL       0x80    /* sent by the kernel from somewhere */

#define SI_QUEUE        -1      /* sent by sigqueue */

#define SI_ASYNCIO      -2      /* sent by AIO completion */

#define SI_TIMER __SI_CODE(__SI_TIMER,-3) /* sent by timer expiration */

#define SI_MESGQ        -4      /* sent by real time mesq state change */

#define SI_SIGIO        -5      /* sent by queued SIGIO */

#define SI_TKILL        -6      /* sent by tkill system call */

#define SI_FROMUSER(siptr)      ((siptr)->si_code <= 0)

#define SI_FROMKERNEL(siptr)    ((siptr)->si_code > 0)

/*

 * SIGILL si_codes

 */

#define ILL_ILLOPC      (__SI_FAULT|1)  /* illegal opcode */

#define ILL_ILLOPN      (__SI_FAULT|2)  /* illegal operand */

#define ILL_ILLADR      (__SI_FAULT|3)  /* illegal addressing mode */

#define ILL_ILLTRP      (__SI_FAULT|4)  /* illegal trap */

#define ILL_PRVOPC      (__SI_FAULT|5)  /* privileged opcode */

#define ILL_PRVREG      (__SI_FAULT|6)  /* privileged register */

#define ILL_COPROC      (__SI_FAULT|7)  /* coprocessor error */

#define ILL_BADSTK      (__SI_FAULT|8)  /* internal stack error */

#define NSIGILL         8

/*

 * SIGFPE si_codes

 */

#define FPE_INTDIV      (__SI_FAULT|1)  /* integer divide by zero */

#define FPE_INTOVF      (__SI_FAULT|2)  /* integer overflow */

#define FPE_FLTDIV      (__SI_FAULT|3)  /* floating point divide by zero */

#define FPE_FLTOVF      (__SI_FAULT|4)  /* floating point overflow */

#define FPE_FLTUND      (__SI_FAULT|5)  /* floating point underflow */

#define FPE_FLTRES      (__SI_FAULT|6)  /* floating point inexact result */

#define FPE_FLTINV      (__SI_FAULT|7)  /* floating point invalid operation */

#define FPE_FLTSUB      (__SI_FAULT|8)  /* subscript out of range */

#define NSIGFPE         8

/*

 * SIGSEGV si_codes

 */

#define SEGV_MAPERR     (__SI_FAULT|1)  /* address not mapped to object */

#define SEGV_ACCERR     (__SI_FAULT|2)  /* invalid permissions for mapped object */

#define NSIGSEGV        2

/*

 * SIGBUS si_codes

 */

#define BUS_ADRALN      (__SI_FAULT|1)  /* invalid address alignment */

#define BUS_ADRERR      (__SI_FAULT|2)  /* non-existant physical address */

#define BUS_OBJERR      (__SI_FAULT|3)  /* object specific hardware error */

#define NSIGBUS         3

/*

 * SIGTRAP si_codes

 */

#define TRAP_BRKPT      (__SI_FAULT|1)  /* process breakpoint */

#define TRAP_TRACE      (__SI_FAULT|2)  /* process trace trap */

#define NSIGTRAP        2

/*

 * SIGCHLD si_codes

 */

#define CLD_EXITED      (__SI_CHLD|1)   /* child has exited */

#define CLD_KILLED      (__SI_CHLD|2)   /* child was killed */

#define CLD_DUMPED      (__SI_CHLD|3)   /* child terminated abnormally */

#define CLD_TRAPPED     (__SI_CHLD|4)   /* traced child has trapped */

#define CLD_STOPPED     (__SI_CHLD|5)   /* child has stopped */

#define CLD_CONTINUED   (__SI_CHLD|6)   /* stopped child has continued */

#define NSIGCHLD        6

/*

 * SIGPOLL si_codes

 */

#define POLL_IN         (__SI_POLL|1)   /* data input available */

#define POLL_OUT        (__SI_POLL|2)   /* output buffers available */

#define POLL_MSG        (__SI_POLL|3)   /* input message available */

#define POLL_ERR        (__SI_POLL|4)   /* i/o error */

#define POLL_PRI        (__SI_POLL|5)   /* high priority input available */

#define POLL_HUP        (__SI_POLL|6)   /* device disconnected */

#define NSIGPOLL        6

/*

 * sigevent definitions

 *

 * It seems likely that SIGEV_THREAD will have to be handled from

 * userspace, libpthread transmuting it to SIGEV_SIGNAL, which the

 * thread manager then catches and does the appropriate nonsense.

 * However, everything is written out here so as to not get lost.

 */

#define SIGEV_SIGNAL    0        /* notify via signal */

#define SIGEV_NONE      1       /* other notification: meaningless */

#define SIGEV_THREAD    2       /* deliver via thread creation */

#define SIGEV_MAX_SIZE  64

#define SIGEV_HEAD_SIZE (sizeof(long) + 2*sizeof(int))

#define SIGEV_PAD_SIZE  ((SIGEV_MAX_SIZE-SIGEV_HEAD_SIZE) / sizeof(int))

typedef struct sigevent {

        sigval_t sigev_value;

        int sigev_signo;

        int sigev_notify;

        union {

                int _pad[SIGEV_PAD_SIZE];

                struct {

                        void (*_function)(sigval_t);

                        void *_attribute;       /* really pthread_attr_t */

                } _sigev_thread;

        } _sigev_un;

} sigevent_t;

#define sigev_notify_function   _sigev_un._sigev_thread._function

#define sigev_notify_attributes _sigev_un._sigev_thread._attribute

#ifdef __KERNEL__

#include <linux/string.h>

static inline void copy_siginfo(siginfo_t *to, siginfo_t *from)

{

        if (from->si_code < 0)

                memcpy(to, from, sizeof(siginfo_t));

        else

                /* _sigchld is currently the largest know union member */

                memcpy(to, from, 3*sizeof(int) + sizeof(from->_sifields._sigchld));

}

extern int copy_siginfo_to_user(siginfo_t *to, siginfo_t *from);

#endif /* __KERNEL__ */

#endif /* _ASM_SIGINFO_H */