New Language: Ada

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@45952 138bc75d-0d04-0410-961f-82ee72b054a4

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+------------------------------------------------------------------------------
+--                                                                          --
+--                GNU ADA RUN-TIME LIBRARY (GNARL) COMPONENTS               --
+--                                                                          --
+--                   S Y S T E M . O S _ I N T E R F A C E                  --
+--                                                                          --
+--                                  S p e c                                 --
+--                                                                          --
+--                             $Revision: 1.23 $
+--                                                                          --
+--           Copyright (C) 1998-2001 Free Software Foundation, Inc.         --
+--                                                                          --
+-- GNARL is free software; you can  redistribute it  and/or modify it under --
+-- terms of the  GNU General Public License as published  by the Free Soft- --
+-- ware  Foundation;  either version 2,  or (at your option) any later ver- --
+-- sion. GNARL is distributed in the hope that it will be useful, but WITH- --
+-- OUT 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  distributed with GNARL; see file COPYING.  If not, write --
+-- to  the Free Software Foundation,  59 Temple Place - Suite 330,  Boston, --
+-- MA 02111-1307, USA.                                                      --
+--                                                                          --
+-- As a special exception,  if other files  instantiate  generics from this --
+-- unit, or you link  this unit with other files  to produce an executable, --
+-- this  unit  does not  by itself cause  the resulting  executable  to  be --
+-- covered  by the  GNU  General  Public  License.  This exception does not --
+-- however invalidate  any other reasons why  the executable file  might be --
+-- covered by the  GNU Public License.                                      --
+--                                                                          --
+-- GNARL was developed by the GNARL team at Florida State University. It is --
+-- now maintained by Ada Core Technologies Inc. in cooperation with Florida --
+-- State University (http://www.gnat.com).                                  --
+--                                                                          --
+------------------------------------------------------------------------------
+
+--  This is the DEC Unix 4.0/5.1 version of this package.
+
+--  This package encapsulates all direct interfaces to OS services
+--  that are needed by children of System.
+
+--  PLEASE DO NOT add any with-clauses to this package
+--  It is designed to be a bottom-level (leaf) package.
+
+with Interfaces.C;
+package System.OS_Interface is
+   pragma Preelaborate;
+
+   pragma Linker_Options ("-lpthread");
+   pragma Linker_Options ("-lmach");
+   pragma Linker_Options ("-lexc");
+   pragma Linker_Options ("-lrt");
+
+   subtype int            is Interfaces.C.int;
+   subtype short          is Interfaces.C.short;
+   subtype long           is Interfaces.C.long;
+   subtype unsigned       is Interfaces.C.unsigned;
+   subtype unsigned_short is Interfaces.C.unsigned_short;
+   subtype unsigned_long  is Interfaces.C.unsigned_long;
+   subtype unsigned_char  is Interfaces.C.unsigned_char;
+   subtype plain_char     is Interfaces.C.plain_char;
+   subtype size_t         is Interfaces.C.size_t;
+   subtype char_array     is Interfaces.C.char_array;
+
+   -----------
+   -- Errno --
+   -----------
+
+   function errno return int;
+   pragma Import (C, errno, "_Geterrno");
+
+   EAGAIN    : constant := 35;
+   EINTR     : constant := 4;
+   EINVAL    : constant := 22;
+   ENOMEM    : constant := 12;
+   ETIMEDOUT : constant := 60;
+
+   -------------
+   -- Signals --
+   -------------
+
+   Max_Interrupt : constant := 48;
+   type Signal is new int range 0 .. Max_Interrupt;
+   for Signal'Size use int'Size;
+
+   SIGHUP     : constant := 1; --  hangup
+   SIGINT     : constant := 2; --  interrupt (rubout)
+   SIGQUIT    : constant := 3; --  quit (ASCD FS)
+   SIGILL     : constant := 4; --  illegal instruction (not reset)
+   SIGTRAP    : constant := 5; --  trace trap (not reset)
+   SIGABRT    : constant := 6; --  used by abort, replace SIGIOT in the  future
+   SIGIOT     : constant := 6; --  abort (terminate) process
+   SIGLOST    : constant := 6; --  old BSD signal ??
+   SIGEMT     : constant := 7; --  EMT instruction
+   SIGFPE     : constant := 8; --  floating point exception
+   SIGKILL    : constant := 9; --  kill (cannot be caught or ignored)
+   SIGBUS     : constant := 10; --  bus error
+   SIGSEGV    : constant := 11; --  segmentation violation
+   SIGSYS     : constant := 12; --  bad argument to system call
+   SIGPIPE    : constant := 13; --  write on a pipe with no one to read it
+   SIGALRM    : constant := 14; --  alarm clock
+   SIGTERM    : constant := 15; --  software termination signal from kill
+   SIGURG     : constant := 16; --  urgent condition on IO channel
+   SIGIOINT   : constant := 16; --  printer to backend error signal
+   SIGSTOP    : constant := 17; --  stop (cannot be caught or ignored)
+   SIGTSTP    : constant := 18; --  user stop requested from tty
+   SIGCONT    : constant := 19; --  stopped process has been continued
+   SIGCHLD    : constant := 20; --  child status change
+   SIGTTIN    : constant := 21; --  background tty read attempted
+   SIGTTOU    : constant := 22; --  background tty write attempted
+   SIGPOLL    : constant := 23; --  I/O possible, or completed
+   SIGIO      : constant := 23; --  STREAMS version of SIGPOLL
+   SIGAIO     : constant := 23; --  base lan i/o
+   SIGPTY     : constant := 23; --  pty i/o
+   SIGXCPU    : constant := 24; --  CPU time limit exceeded
+   SIGXFSZ    : constant := 25; --  filesize limit exceeded
+   SIGVTALRM  : constant := 26; --  virtual timer expired
+   SIGPROF    : constant := 27; --  profiling timer expired
+   SIGWINCH   : constant := 28; --  window size change
+   SIGINFO    : constant := 29; --  information request
+   SIGPWR     : constant := 29; --  Power Fail/Restart -- SVID3/SVR4
+   SIGUSR1    : constant := 30; --  user defined signal 1
+   SIGUSR2    : constant := 31; --  user defined signal 2
+   SIGRESV    : constant := 32; --  reserved by Digital for future use
+
+   SIGADAABORT : constant := SIGABRT;
+
+   type Signal_Set is array (Natural range <>) of Signal;
+
+   Unmasked    : constant Signal_Set := (0 .. 0 => SIGTRAP);
+   Reserved    : constant Signal_Set := (SIGALRM, SIGABRT, SIGKILL, SIGSTOP);
+
+   type sigset_t is private;
+
+   function sigaddset (set : access sigset_t; sig : Signal) return int;
+   pragma Import (C, sigaddset);
+
+   function sigdelset (set : access sigset_t; sig : Signal) return int;
+   pragma Import (C, sigdelset);
+
+   function sigfillset (set : access sigset_t) return int;
+   pragma Import (C, sigfillset);
+
+   function sigismember (set : access sigset_t; sig : Signal) return int;
+   pragma Import (C, sigismember);
+
+   function sigemptyset (set : access sigset_t) return int;
+   pragma Import (C, sigemptyset);
+
+   type union_type_3 is new String (1 .. 116);
+   type siginfo_t is record
+      si_signo     : int;
+      si_errno     : int;
+      si_code      : int;
+      X_data       : union_type_3;
+   end record;
+   for siginfo_t'Size use 8 * 128;
+   pragma Convention (C, siginfo_t);
+
+   type struct_sigaction is record
+      sa_handler : System.Address;
+      sa_mask    : sigset_t;
+      sa_flags   : int;
+      sa_signo   : int;
+   end record;
+   pragma Convention (C, struct_sigaction);
+   type struct_sigaction_ptr is access all struct_sigaction;
+
+   SIG_BLOCK   : constant := 1;
+   SIG_UNBLOCK : constant := 2;
+   SIG_SETMASK : constant := 3;
+
+   SIG_DFL : constant := 0;
+   SIG_IGN : constant := 1;
+
+   SA_NODEFER : constant := 8;
+   SA_SIGINFO : constant := 16#40#;
+
+   function sigaction
+     (sig  : Signal;
+      act  : struct_sigaction_ptr;
+      oact : struct_sigaction_ptr) return int;
+   pragma Import (C, sigaction);
+
+   ----------
+   -- Time --
+   ----------
+
+   type timespec is private;
+
+   function nanosleep (rqtp, rmtp : access timespec)  return int;
+   pragma Import (C, nanosleep);
+
+   type clockid_t is private;
+
+   CLOCK_REALTIME : constant clockid_t;
+
+   function clock_gettime
+     (clock_id : clockid_t;
+      tp       : access timespec) return int;
+   pragma Import (C, clock_gettime);
+
+   function To_Duration (TS : timespec) return Duration;
+   pragma Inline (To_Duration);
+
+   function To_Timespec (D : Duration) return timespec;
+   pragma Inline (To_Timespec);
+
+   type struct_timezone is record
+      tz_minuteswest : int;
+      tz_dsttime     : int;
+   end record;
+   pragma Convention (C, struct_timezone);
+   type struct_timeval is private;
+   --  This is needed on systems that do not have clock_gettime()
+   --  but do have gettimeofday().
+
+   function To_Duration (TV : struct_timeval) return Duration;
+   pragma Inline (To_Duration);
+
+   function To_Timeval (D : Duration) return struct_timeval;
+   pragma Inline (To_Timeval);
+
+   -------------------------
+   -- Priority Scheduling --
+   -------------------------
+
+   SCHED_FIFO  : constant := 1;
+   SCHED_RR    : constant := 2;
+   SCHED_OTHER : constant := 3;
+   SCHED_LFI   : constant := 5;
+
+   -------------
+   -- Process --
+   -------------
+
+   type pid_t is private;
+
+   function kill (pid : pid_t; sig : Signal) return int;
+   pragma Import (C, kill);
+
+   function getpid return pid_t;
+   pragma Import (C, getpid);
+
+   BIND_NO_INHERIT  : constant := 1;
+
+   function bind_to_cpu
+     (pid       : pid_t;
+      cpu_mask  : unsigned_long;
+      flag      : unsigned_long := BIND_NO_INHERIT) return int;
+   pragma Import (C, bind_to_cpu);
+
+   -------------
+   -- Threads --
+   -------------
+
+   type Thread_Body is access
+     function (arg : System.Address) return System.Address;
+   type pthread_t           is private;
+   subtype Thread_Id        is pthread_t;
+
+   type pthread_mutex_t     is limited private;
+   type pthread_cond_t      is limited private;
+   type pthread_attr_t      is limited private;
+   type pthread_mutexattr_t is limited private;
+   type pthread_condattr_t  is limited private;
+   type pthread_key_t       is private;
+
+   PTHREAD_CREATE_DETACHED : constant := 1;
+
+   PTHREAD_SCOPE_PROCESS : constant := 0;
+   PTHREAD_SCOPE_SYSTEM  : constant := 1;
+
+   PTHREAD_EXPLICIT_SCHED : constant := 1;
+
+   ---------------------------------------
+   -- Nonstandard Thread Initialization --
+   ---------------------------------------
+
+   procedure pthread_init;
+   pragma Inline (pthread_init);
+   --  This is a dummy procedure to share some GNULLI files
+
+   ---------------------------
+   --  POSIX.1c  Section 3  --
+   ---------------------------
+
+   function sigwait
+     (set : access sigset_t;
+      sig : access Signal) return int;
+   pragma Import (C, sigwait, "__sigwaitd10");
+
+   function pthread_kill
+     (thread : pthread_t;
+      sig    : Signal) return int;
+   pragma Import (C, pthread_kill);
+
+   type sigset_t_ptr is access all sigset_t;
+
+   function pthread_sigmask
+     (how  : int;
+      set  : sigset_t_ptr;
+      oset : sigset_t_ptr) return int;
+   pragma Import (C, pthread_sigmask);
+
+   ----------------------------
+   --  POSIX.1c  Section 11  --
+   ----------------------------
+
+   function pthread_mutexattr_init (attr : access pthread_mutexattr_t)
+     return int;
+   pragma Import (C, pthread_mutexattr_init);
+
+   function pthread_mutexattr_destroy
+     (attr : access pthread_mutexattr_t) return int;
+   pragma Import (C, pthread_mutexattr_destroy);
+
+   function pthread_mutex_init
+     (mutex : access pthread_mutex_t;
+      attr  : access pthread_mutexattr_t) return int;
+   pragma Import (C, pthread_mutex_init, "__pthread_mutex_init");
+
+   function pthread_mutex_destroy (mutex : access pthread_mutex_t) return int;
+   pragma Import (C, pthread_mutex_destroy, "__pthread_mutex_destroy");
+
+   function pthread_mutex_lock (mutex : access pthread_mutex_t) return int;
+   pragma Import (C, pthread_mutex_lock, "__pthread_mutex_lock");
+
+   function pthread_mutex_unlock (mutex : access pthread_mutex_t) return int;
+   pragma Import (C, pthread_mutex_unlock, "__pthread_mutex_unlock");
+
+   function pthread_condattr_init
+     (attr : access pthread_condattr_t) return int;
+   pragma Import (C, pthread_condattr_init);
+
+   function pthread_condattr_destroy
+     (attr : access pthread_condattr_t) return int;
+   pragma Import (C, pthread_condattr_destroy);
+
+   function pthread_cond_init
+     (cond : access pthread_cond_t;
+      attr : access pthread_condattr_t) return int;
+   pragma Import (C, pthread_cond_init, "__pthread_cond_init");
+
+   function pthread_cond_destroy (cond : access pthread_cond_t) return int;
+   pragma Import (C, pthread_cond_destroy, "__pthread_cond_destroy");
+
+   function pthread_cond_signal (cond : access pthread_cond_t) return int;
+   pragma Import (C, pthread_cond_signal, "__pthread_cond_signal");
+
+   function pthread_cond_wait
+     (cond  : access pthread_cond_t;
+      mutex : access pthread_mutex_t) return  int;
+   pragma Import (C, pthread_cond_wait, "__pthread_cond_wait");
+
+   function pthread_cond_timedwait
+     (cond    : access pthread_cond_t;
+      mutex   : access pthread_mutex_t;
+      abstime : access timespec) return int;
+   pragma Import (C, pthread_cond_timedwait, "__pthread_cond_timedwait");
+
+   ----------------------------
+   --  POSIX.1c  Section 13  --
+   ----------------------------
+
+   function pthread_mutexattr_setprotocol
+     (attr     : access pthread_mutexattr_t;
+      protocol : int) return int;
+   pragma Import (C, pthread_mutexattr_setprotocol);
+
+   function pthread_mutexattr_setprioceiling
+     (attr     : access pthread_mutexattr_t;
+      prioceiling : int) return int;
+   pragma Import (C, pthread_mutexattr_setprioceiling);
+
+   type struct_sched_param is record
+      sched_priority : int;  --  scheduling priority
+   end record;
+
+   function pthread_setschedparam
+     (thread : pthread_t;
+      policy : int;
+      param  : access struct_sched_param) return int;
+   pragma Import (C, pthread_setschedparam);
+
+   function pthread_attr_setscope
+     (attr            : access pthread_attr_t;
+      contentionscope : int) return int;
+   pragma Import (C, pthread_attr_setscope);
+
+   function pthread_attr_setinheritsched
+     (attr            : access pthread_attr_t;
+      inheritsched    : int) return int;
+   pragma Import (C, pthread_attr_setinheritsched,
+     "__pthread_attr_setinheritsched");
+
+   function pthread_attr_setschedpolicy
+     (attr : access pthread_attr_t; policy : int) return int;
+   pragma Import (C, pthread_attr_setschedpolicy);
+
+   function pthread_attr_setschedparam
+     (attr        : access pthread_attr_t;
+      sched_param : access struct_sched_param) return int;
+   pragma Import (C, pthread_attr_setschedparam);
+
+   function sched_yield return int;
+   pragma Import (C, sched_yield);
+
+   ---------------------------
+   -- P1003.1c - Section 16 --
+   ---------------------------
+
+   function pthread_attr_init (attributes : access pthread_attr_t)
+     return int;
+   pragma Import (C, pthread_attr_init);
+
+   function pthread_attr_destroy (attributes : access pthread_attr_t)
+     return int;
+   pragma Import (C, pthread_attr_destroy);
+
+   function pthread_attr_setdetachstate
+     (attr        : access pthread_attr_t;
+      detachstate : int) return int;
+   pragma Import (C, pthread_attr_setdetachstate);
+
+   function pthread_attr_setstacksize
+     (attr      : access pthread_attr_t;
+      stacksize : size_t) return int;
+   pragma Import (C, pthread_attr_setstacksize, "__pthread_attr_setstacksize");
+
+   function pthread_create
+     (thread        : access pthread_t;
+      attributes    : access pthread_attr_t;
+      start_routine : Thread_Body;
+      arg           : System.Address) return int;
+   pragma Import (C, pthread_create, "__pthread_create");
+
+   procedure pthread_exit (status : System.Address);
+   pragma Import (C, pthread_exit, "__pthread_exit");
+
+   function pthread_self return pthread_t;
+   pragma Import (C, pthread_self, "__pthread_self");
+
+   --------------------------
+   -- POSIX.1c  Section 17 --
+   --------------------------
+
+   function pthread_setspecific
+     (key : pthread_key_t; value : System.Address) return int;
+   pragma Import (C, pthread_setspecific, "__pthread_setspecific");
+
+   function pthread_getspecific (key : pthread_key_t) return System.Address;
+   pragma Import (C, pthread_getspecific, "__pthread_getspecific");
+
+   type destructor_pointer is access procedure (arg : System.Address);
+
+   function pthread_key_create
+     (key        : access pthread_key_t;
+      destructor : destructor_pointer) return int;
+   pragma Import (C, pthread_key_create);
+
+private
+
+   type sigset_t is new unsigned_long;
+
+   type pid_t is new int;
+
+   type time_t is new int;
+
+   type timespec is record
+      tv_sec  : time_t;
+      tv_nsec : long;
+   end record;
+   pragma Convention (C, timespec);
+
+   type clockid_t is new int;
+   CLOCK_REALTIME : constant clockid_t := 1;
+
+   type struct_timeval is record
+      tv_sec  : time_t;
+      tv_usec : time_t;
+   end record;
+   pragma Convention (C, struct_timeval);
+
+   type unsigned_long_array is array (Natural range <>) of unsigned_long;
+
+   type pthread_t is new System.Address;
+
+   type pthread_cond_t is record
+      state     : unsigned;
+      valid     : unsigned;
+      name      : System.Address;
+      arg       : unsigned;
+      reserved1 : unsigned;
+      sequence  : unsigned_long;
+      block     : System.Address;
+   end record;
+   pragma Convention (C, pthread_cond_t);
+
+   type pthread_attr_t is record
+      valid    : long;
+      name     : System.Address;
+      arg      : unsigned_long;
+      reserved : unsigned_long_array (0 .. 18);
+   end record;
+   pragma Convention (C, pthread_attr_t);
+
+   type pthread_mutex_t is record
+      lock     : unsigned;
+      valid    : unsigned;
+      name     : System.Address;
+      arg      : unsigned;
+      depth    : unsigned;
+      sequence : unsigned_long;
+      owner    : unsigned_long;
+      block    : System.Address;
+   end record;
+   for pthread_mutex_t'Size use 8 * 48;
+   pragma Convention (C, pthread_mutex_t);
+
+   type pthread_mutexattr_t is record
+      valid    : long;
+      reserved : unsigned_long_array (0 .. 14);
+   end record;
+   pragma Convention (C, pthread_mutexattr_t);
+
+   type pthread_condattr_t is record
+      valid    : long;
+      reserved : unsigned_long_array (0 .. 12);
+   end record;
+   pragma Convention (C, pthread_condattr_t);
+
+   type pthread_key_t is new unsigned;
+
+end System.OS_Interface;