text: /* siginfo_t, sigevent and constants.  Linux x86-64 version.
     Copyright (C) 2012-2014 Free Software Foundation, Inc.
     This file is part of the GNU C Library.
  
     The GNU C Library is free software; you can redistribute it and/or
     modify it under the terms of the GNU Lesser General Public
     License as published by the Free Software Foundation; either
     version 2.1 of the License, or (at your option) any later version.
  
     The GNU C Library 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
     Lesser General Public License for more details.
  
     You should have received a copy of the GNU Lesser General Public
     License along with the GNU C Library; if not, see
     <http://www.gnu.org/licenses/>.  */
  
  #if !defined _SIGNAL_H && !defined __need_siginfo_t \
      && !defined __need_sigevent_t
  # error "Never include this file directly.  Use <signal.h> instead"
  #endif
  
  #include <bits/wordsize.h>
  
  #if (!defined __have_sigval_t \
       && (defined _SIGNAL_H || defined __need_siginfo_t \
  	 || defined __need_sigevent_t))
  # define __have_sigval_t	1
  
  /* Type for data associated with a signal.  */
  typedef union sigval
    {
      int sival_int;
      void *sival_ptr;
    } sigval_t;
  #endif
  
  #if (!defined __have_siginfo_t \
       && (defined _SIGNAL_H || defined __need_siginfo_t))
  # define __have_siginfo_t	1
  
  # define __SI_MAX_SIZE     128
  # if __WORDSIZE == 64
  #  define __SI_PAD_SIZE     ((__SI_MAX_SIZE / sizeof (int)) - 4)
  # else
  #  define __SI_PAD_SIZE     ((__SI_MAX_SIZE / sizeof (int)) - 3)
  # endif
  
  # if defined __x86_64__ && __WORDSIZE == 32
  /* si_utime and si_stime must be 4 byte aligned for x32 to match the
     kernel.  We align siginfo_t to 8 bytes so that si_utime and si_stime
     are actually aligned to 8 bytes since their offsets are multiple of
     8 bytes.  */
  typedef __clock_t __attribute__ ((__aligned__ (4))) __sigchld_clock_t;
  #  define __SI_ALIGNMENT __attribute__ ((__aligned__ (8)))
  # else
  typedef __clock_t __sigchld_clock_t;
  #  define __SI_ALIGNMENT
  # endif
  
  typedef struct
    {
      int si_signo;		/* Signal number.  */
      int si_errno;		/* If non-zero, an errno value associated with
  				   this signal, as defined in <errno.h>.  */
      int si_code;		/* Signal code.  */
  
      union
        {
  	int _pad[__SI_PAD_SIZE];
  
  	 /* kill().  */
  	struct
  	  {
  	    __pid_t si_pid;	/* Sending process ID.  */
  	    __uid_t si_uid;	/* Real user ID of sending process.  */
  	  } _kill;
  
  	/* POSIX.1b timers.  */
  	struct
  	  {
  	    int si_tid;		/* Timer ID.  */
  	    int si_overrun;	/* Overrun count.  */
  	    sigval_t si_sigval;	/* Signal value.  */
  	  } _timer;
  
  	/* POSIX.1b signals.  */
  	struct
  	  {
  	    __pid_t si_pid;	/* Sending process ID.  */
  	    __uid_t si_uid;	/* Real user ID of sending process.  */
  	    sigval_t si_sigval;	/* Signal value.  */
  	  } _rt;
  
  	/* SIGCHLD.  */
  	struct
  	  {
  	    __pid_t si_pid;	/* Which child.  */
  	    __uid_t si_uid;	/* Real user ID of sending process.  */
  	    int si_status;	/* Exit value or signal.  */
  	    __sigchld_clock_t si_utime;
  	    __sigchld_clock_t si_stime;
  	  } _sigchld;
  
  	/* SIGILL, SIGFPE, SIGSEGV, SIGBUS.  */
  	struct
  	  {
  	    void *si_addr;	/* Faulting insn/memory ref.  */
  	    short int si_addr_lsb;	/* Valid LSB of the reported address.  */
  	  } _sigfault;
  
  	/* SIGPOLL.  */
  	struct
  	  {
  	    long int si_band;	/* Band event for SIGPOLL.  */
  	    int si_fd;
  	  } _sigpoll;
  
  	/* SIGSYS.  */
  	struct
  	  {
  	    void *_call_addr;	/* Calling user insn.  */
  	    int _syscall;	/* Triggering system call number.  */
  	    unsigned int _arch; /* AUDIT_ARCH_* of syscall.  */
  	  } _sigsys;
        } _sifields;
    } siginfo_t __SI_ALIGNMENT;
  
  
  /* X/Open requires some more fields with fixed names.  */
  # define si_pid		_sifields._kill.si_pid
  # define si_uid		_sifields._kill.si_uid
  # define si_timerid	_sifields._timer.si_tid
  # define si_overrun	_sifields._timer.si_overrun
  # define si_status	_sifields._sigchld.si_status
  # define si_utime	_sifields._sigchld.si_utime
  # define si_stime	_sifields._sigchld.si_stime
  # define si_value	_sifields._rt.si_sigval
  # define si_int		_sifields._rt.si_sigval.sival_int
  # define si_ptr		_sifields._rt.si_sigval.sival_ptr
  # define si_addr	_sifields._sigfault.si_addr
  # define si_addr_lsb	_sifields._sigfault.si_addr_lsb
  # define si_band	_sifields._sigpoll.si_band
  # define si_fd		_sifields._sigpoll.si_fd
  # define si_call_addr 	_sifields._sigsys._call_addr
  # define si_syscall	_sifields._sigsys._syscall
  # define si_arch	_sifields._sigsys._arch
  
  
  /* Values for `si_code'.  Positive values are reserved for kernel-generated
     signals.  */
  enum
  {
    SI_ASYNCNL = -60,		/* Sent by asynch name lookup completion.  */
  # define SI_ASYNCNL	SI_ASYNCNL
    SI_TKILL = -6,		/* Sent by tkill.  */
  # define SI_TKILL	SI_TKILL
    SI_SIGIO,			/* Sent by queued SIGIO. */
  # define SI_SIGIO	SI_SIGIO
    SI_ASYNCIO,			/* Sent by AIO completion.  */
  # define SI_ASYNCIO	SI_ASYNCIO
    SI_MESGQ,			/* Sent by real time mesq state change.  */
  # define SI_MESGQ	SI_MESGQ
    SI_TIMER,			/* Sent by timer expiration.  */
  # define SI_TIMER	SI_TIMER
    SI_QUEUE,			/* Sent by sigqueue.  */
  # define SI_QUEUE	SI_QUEUE
    SI_USER,			/* Sent by kill, sigsend.  */
  # define SI_USER	SI_USER
    SI_KERNEL = 0x80		/* Send by kernel.  */
  #define SI_KERNEL	SI_KERNEL
  };
  
  
  /* `si_code' values for SIGILL signal.  */
  enum
  {
    ILL_ILLOPC = 1,		/* Illegal opcode.  */
  # define ILL_ILLOPC	ILL_ILLOPC
    ILL_ILLOPN,			/* Illegal operand.  */
  # define ILL_ILLOPN	ILL_ILLOPN
    ILL_ILLADR,			/* Illegal addressing mode.  */
  # define ILL_ILLADR	ILL_ILLADR
    ILL_ILLTRP,			/* Illegal trap. */
  # define ILL_ILLTRP	ILL_ILLTRP
    ILL_PRVOPC,			/* Privileged opcode.  */
  # define ILL_PRVOPC	ILL_PRVOPC
    ILL_PRVREG,			/* Privileged register.  */
  # define ILL_PRVREG	ILL_PRVREG
    ILL_COPROC,			/* Coprocessor error.  */
  # define ILL_COPROC	ILL_COPROC
    ILL_BADSTK			/* Internal stack error.  */
  # define ILL_BADSTK	ILL_BADSTK
  };
  
  /* `si_code' values for SIGFPE signal.  */
  enum
  {
    FPE_INTDIV = 1,		/* Integer divide by zero.  */
  # define FPE_INTDIV	FPE_INTDIV
    FPE_INTOVF,			/* Integer overflow.  */
  # define FPE_INTOVF	FPE_INTOVF
    FPE_FLTDIV,			/* Floating point divide by zero.  */
  # define FPE_FLTDIV	FPE_FLTDIV
    FPE_FLTOVF,			/* Floating point overflow.  */
  # define FPE_FLTOVF	FPE_FLTOVF
    FPE_FLTUND,			/* Floating point underflow.  */
  # define FPE_FLTUND	FPE_FLTUND
    FPE_FLTRES,			/* Floating point inexact result.  */
  # define FPE_FLTRES	FPE_FLTRES
    FPE_FLTINV,			/* Floating point invalid operation.  */
  # define FPE_FLTINV	FPE_FLTINV
    FPE_FLTSUB			/* Subscript out of range.  */
  # define FPE_FLTSUB	FPE_FLTSUB
  };
  
  /* `si_code' values for SIGSEGV signal.  */
  enum
  {
    SEGV_MAPERR = 1,		/* Address not mapped to object.  */
  # define SEGV_MAPERR	SEGV_MAPERR
    SEGV_ACCERR			/* Invalid permissions for mapped object.  */
  # define SEGV_ACCERR	SEGV_ACCERR
  };
  
  /* `si_code' values for SIGBUS signal.  */
  enum
  {
    BUS_ADRALN = 1,		/* Invalid address alignment.  */
  # define BUS_ADRALN	BUS_ADRALN
    BUS_ADRERR,			/* Non-existant physical address.  */
  # define BUS_ADRERR	BUS_ADRERR
    BUS_OBJERR,			/* Object specific hardware error.  */
  # define BUS_OBJERR	BUS_OBJERR
    BUS_MCEERR_AR,		/* Hardware memory error: action required.  */
  # define BUS_MCEERR_AR	BUS_MCEERR_AR
    BUS_MCEERR_AO			/* Hardware memory error: action optional.  */
  # define BUS_MCEERR_AO	BUS_MCEERR_AO
  };
  
  /* `si_code' values for SIGTRAP signal.  */
  enum
  {
    TRAP_BRKPT = 1,		/* Process breakpoint.  */
  # define TRAP_BRKPT	TRAP_BRKPT
    TRAP_TRACE			/* Process trace trap.  */
  # define TRAP_TRACE	TRAP_TRACE
  };
  
  /* `si_code' values for SIGCHLD signal.  */
  enum
  {
    CLD_EXITED = 1,		/* Child has exited.  */
  # define CLD_EXITED	CLD_EXITED
    CLD_KILLED,			/* Child was killed.  */
  # define CLD_KILLED	CLD_KILLED
    CLD_DUMPED,			/* Child terminated abnormally.  */
  # define CLD_DUMPED	CLD_DUMPED
    CLD_TRAPPED,			/* Traced child has trapped.  */
  # define CLD_TRAPPED	CLD_TRAPPED
    CLD_STOPPED,			/* Child has stopped.  */
  # define CLD_STOPPED	CLD_STOPPED
    CLD_CONTINUED			/* Stopped child has continued.  */
  # define CLD_CONTINUED	CLD_CONTINUED
  };
  
  /* `si_code' values for SIGPOLL signal.  */
  enum
  {
    POLL_IN = 1,			/* Data input available.  */
  # define POLL_IN	POLL_IN
    POLL_OUT,			/* Output buffers available.  */
  # define POLL_OUT	POLL_OUT
    POLL_MSG,			/* Input message available.   */
  # define POLL_MSG	POLL_MSG
    POLL_ERR,			/* I/O error.  */
  # define POLL_ERR	POLL_ERR
    POLL_PRI,			/* High priority input available.  */
  # define POLL_PRI	POLL_PRI
    POLL_HUP			/* Device disconnected.  */
  # define POLL_HUP	POLL_HUP
  };
  
  # undef __need_siginfo_t
  #endif	/* !have siginfo_t && (have _SIGNAL_H || need siginfo_t).  */
  
  
  #if (defined _SIGNAL_H || defined __need_sigevent_t) \
      && !defined __have_sigevent_t
  # define __have_sigevent_t	1
  
  /* Structure to transport application-defined values with signals.  */
  # define __SIGEV_MAX_SIZE	64
  # if __WORDSIZE == 64
  #  define __SIGEV_PAD_SIZE	((__SIGEV_MAX_SIZE / sizeof (int)) - 4)
  # else
  #  define __SIGEV_PAD_SIZE	((__SIGEV_MAX_SIZE / sizeof (int)) - 3)
  # endif
  
  /* Forward declaration.  */
  # ifndef __have_pthread_attr_t
  typedef union pthread_attr_t pthread_attr_t;
  #  define __have_pthread_attr_t	1
  # endif
  
  typedef struct sigevent
    {
      sigval_t sigev_value;
      int sigev_signo;
      int sigev_notify;
  
      union
        {
  	int _pad[__SIGEV_PAD_SIZE];
  
  	/* When SIGEV_SIGNAL and SIGEV_THREAD_ID set, LWP ID of the
  	   thread to receive the signal.  */
  	__pid_t _tid;
  
  	struct
  	  {
  	    void (*_function) (sigval_t);	/* Function to start.  */
  	    pthread_attr_t *_attribute;		/* Thread attributes.  */
  	  } _sigev_thread;
        } _sigev_un;
    } sigevent_t;
  
  /* POSIX names to access some of the members.  */
  # define sigev_notify_function   _sigev_un._sigev_thread._function
  # define sigev_notify_attributes _sigev_un._sigev_thread._attribute
  
  /* `sigev_notify' values.  */
  enum
  {
    SIGEV_SIGNAL = 0,		/* Notify via signal.  */
  # define SIGEV_SIGNAL	SIGEV_SIGNAL
    SIGEV_NONE,			/* Other notification: meaningless.  */
  # define SIGEV_NONE	SIGEV_NONE
    SIGEV_THREAD,			/* Deliver via thread creation.  */
  # define SIGEV_THREAD	SIGEV_THREAD
  
    SIGEV_THREAD_ID = 4		/* Send signal to specific thread.  */
  #define SIGEV_THREAD_ID	SIGEV_THREAD_ID
  };
  
  #endif	/* have _SIGNAL_H.  */
  