RTEMS/Ada: Account for 64-bit time_t

The Newlib time_t has now 64 bits for RTEMS.

gcc/ada

	* gcc-interface/Makefile.in (RTEMS): Use s-osprim__rtems.adb.
	* libgnat/s-osprim__rtems.adb: New file.
	* libgnarl/s-osinte__rtems.adb (pthread_cond_t): Fix alignment.
	(pthread_mutexattr_t): Likewise.
	(pthread_rwlockattr_t): Likewise.
	(pthread_rwlock_t): Likewise.
	(time_t): Use 64-bit integer.

From-SVN: r255380

gcc/ada/ChangeLog

+2017-12-04  Sebastian Huber  <sebastian.huber@embedded-brains.de>
+
+	* gcc-interface/Makefile.in (RTEMS): Use s-osprim__rtems.adb.
+	* libgnat/s-osprim__rtems.adb: New file.
+	* libgnarl/s-osinte__rtems.adb (pthread_cond_t): Fix alignment.
+	(pthread_mutexattr_t): Likewise.
+	(pthread_rwlockattr_t): Likewise.
+	(pthread_rwlock_t): Likewise.
+	(time_t): Use 64-bit integer.
+
 2017-12-01  Sebastian Huber  <sebastian.huber@embedded-brains.de>
 
 	* libgnarl/s-osinte__rtems.ads (pthread_cond_t): Use correct size and

gcc/ada/gcc-interface/Makefile.in

@@ -1361,7 +1361,7 @@ ifeq ($(strip $(filter-out rtems%,$(target_os))),)
   s-intman.adb<libgnarl/s-intman__posix.adb \
   s-osinte.adb<libgnarl/s-osinte__rtems.adb \
   s-osinte.ads<libgnarl/s-osinte__rtems.ads \
-  s-osprim.adb<libgnat/s-osprim__posix.adb \
+  s-osprim.adb<libgnat/s-osprim__rtems.adb \
   s-parame.adb<libgnat/s-parame__rtems.adb \
   s-taprop.adb<libgnarl/s-taprop__posix.adb \
   s-taspri.ads<libgnarl/s-taspri__posix.ads \

gcc/ada/libgnarl/s-osinte__rtems.ads

@@ -620,7 +620,7 @@ private
 
    type pid_t is new int;
 
-   type time_t is new long;
+   type time_t is new Long_Long_Integer;
 
    type timespec is record
       tv_sec  : time_t;
@@ -649,13 +649,13 @@ private
       Data : char_array (1 .. OS_Constants.PTHREAD_MUTEXATTR_SIZE);
    end  record;
    pragma Convention (C, pthread_mutexattr_t);
-   for pthread_mutexattr_t'Alignment use Interfaces.C.double'Alignment;
+   for pthread_mutexattr_t'Alignment use Interfaces.C.int'Alignment;
 
    type pthread_rwlockattr_t is record
       Data : char_array (1 .. OS_Constants.PTHREAD_RWLOCKATTR_SIZE);
    end record;
    pragma Convention (C, pthread_rwlockattr_t);
-   for pthread_rwlockattr_t'Alignment use Interfaces.C.double'Alignment;
+   for pthread_rwlockattr_t'Alignment use Interfaces.C.int'Alignment;
 
    type pthread_t is new rtems_id;
 
@@ -669,13 +669,13 @@ private
       Data : char_array (1 .. OS_Constants.PTHREAD_RWLOCK_SIZE);
    end record;
    pragma Convention (C, pthread_rwlock_t);
-   for pthread_rwlock_t'Alignment use Interfaces.C.double'Alignment;
+   for pthread_rwlock_t'Alignment use Interfaces.C.size_t'Alignment;
 
    type pthread_cond_t is record
       Data : char_array (1 .. OS_Constants.PTHREAD_COND_SIZE);
    end record;
    pragma Convention (C, pthread_cond_t);
-   for pthread_cond_t'Alignment use Interfaces.C.double'Alignment;
+   for pthread_cond_t'Alignment use Interfaces.C.size_t'Alignment;
 
    type pthread_key_t is new rtems_id;
 

gcc/ada/libgnat/s-osprim__rtems.adb

+------------------------------------------------------------------------------
+--                                                                          --
+--                 GNAT RUN-TIME LIBRARY (GNARL) COMPONENTS                 --
+--                                                                          --
+--                  S Y S T E M . O S _ P R I M I T I V E S                 --
+--                                                                          --
+--                                  B o d y                                 --
+--                                                                          --
+--          Copyright (C) 1998-2015, 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 3,  or (at your option) any later ver- --
+-- sion.  GNAT 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.                                     --
+--                                                                          --
+-- As a special exception under Section 7 of GPL version 3, you are granted --
+-- additional permissions described in the GCC Runtime Library Exception,   --
+-- version 3.1, as published by the Free Software Foundation.               --
+--                                                                          --
+-- You should have received a copy of the GNU General Public License and    --
+-- a copy of the GCC Runtime Library Exception along with this program;     --
+-- see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see    --
+-- <http://www.gnu.org/licenses/>.                                          --
+--                                                                          --
+-- GNARL was developed by the GNARL team at Florida State University.       --
+-- Extensive contributions were provided by Ada Core Technologies, Inc.     --
+--                                                                          --
+------------------------------------------------------------------------------
+
+--  This version is for POSIX-like operating systems
+
+package body System.OS_Primitives is
+
+   --  ??? These definitions are duplicated from System.OS_Interface
+   --  because we don't want to depend on any package. Consider removing
+   --  these declarations in System.OS_Interface and move these ones in
+   --  the spec.
+
+   type time_t is new Long_Long_Integer;
+
+   type timespec is record
+      tv_sec  : time_t;
+      tv_nsec : Long_Integer;
+   end record;
+   pragma Convention (C, timespec);
+
+   function nanosleep (rqtp, rmtp : not null access timespec) return Integer;
+   pragma Import (C, nanosleep, "nanosleep");
+
+   -----------
+   -- Clock --
+   -----------
+
+   function Clock return Duration is
+
+      type timeval is record
+         tv_sec  : time_t;
+         tv_usec : Long_Integer;
+      end record;
+      pragma Convention (C, timeval);
+
+      procedure timeval_to_duration
+        (T    : not null access timeval;
+         sec  : not null access Long_Long_Integer;
+         usec : not null access Long_Integer);
+      pragma Import (C, timeval_to_duration, "__gnat_timeval_to_duration");
+
+      Micro  : constant := 10**6;
+      sec    : aliased Long_Long_Integer;
+      usec   : aliased Long_Integer;
+      TV     : aliased timeval;
+      Result : Integer;
+      pragma Unreferenced (Result);
+
+      function gettimeofday
+        (Tv : access timeval;
+         Tz : System.Address := System.Null_Address) return Integer;
+      pragma Import (C, gettimeofday, "gettimeofday");
+
+   begin
+      --  The return codes for gettimeofday are as follows (from man pages):
+      --    EPERM  settimeofday is called by someone other than the superuser
+      --    EINVAL Timezone (or something else) is invalid
+      --    EFAULT One of tv or tz pointed outside accessible address space
+
+      --  None of these codes signal a potential clock skew, hence the return
+      --  value is never checked.
+
+      Result := gettimeofday (TV'Access, System.Null_Address);
+      timeval_to_duration (TV'Access, sec'Access, usec'Access);
+      return Duration (sec) + Duration (usec) / Micro;
+   end Clock;
+
+   -----------------
+   -- To_Timespec --
+   -----------------
+
+   function To_Timespec (D : Duration) return timespec;
+
+   function To_Timespec (D : Duration) return timespec is
+      S : time_t;
+      F : Duration;
+
+   begin
+      S := time_t (Long_Long_Integer (D));
+      F := D - Duration (S);
+
+      --  If F has negative value due to a round-up, adjust for positive F
+      --  value.
+
+      if F < 0.0 then
+         S := S - 1;
+         F := F + 1.0;
+      end if;
+
+      return
+        timespec'(tv_sec  => S,
+                  tv_nsec => Long_Integer (Long_Long_Integer (F * 10#1#E9)));
+   end To_Timespec;
+
+   -----------------
+   -- Timed_Delay --
+   -----------------
+
+   procedure Timed_Delay
+     (Time : Duration;
+      Mode : Integer)
+   is
+      Request    : aliased timespec;
+      Remaind    : aliased timespec;
+      Rel_Time   : Duration;
+      Abs_Time   : Duration;
+      Base_Time  : constant Duration := Clock;
+      Check_Time : Duration := Base_Time;
+
+      Result : Integer;
+      pragma Unreferenced (Result);
+
+   begin
+      if Mode = Relative then
+         Rel_Time := Time;
+         Abs_Time := Time + Check_Time;
+      else
+         Rel_Time := Time - Check_Time;
+         Abs_Time := Time;
+      end if;
+
+      if Rel_Time > 0.0 then
+         loop
+            Request := To_Timespec (Rel_Time);
+            Result := nanosleep (Request'Access, Remaind'Access);
+            Check_Time := Clock;
+
+            exit when Abs_Time <= Check_Time or else Check_Time < Base_Time;
+
+            Rel_Time := Abs_Time - Check_Time;
+         end loop;
+      end if;
+   end Timed_Delay;
+
+   ----------------
+   -- Initialize --
+   ----------------
+
+   procedure Initialize is
+   begin
+      null;
+   end Initialize;
+
+end System.OS_Primitives;