--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/gcc/ada/libgnat/a-calcon.adb	Fri Oct 27 22:46:09 2017 +0900
@@ -0,0 +1,148 @@
+------------------------------------------------------------------------------
+--                                                                          --
+--                         GNAT RUN-TIME COMPONENTS                         --
+--                                                                          --
+--              A D A . C A L E N D A R . C O N V E R S I O N S             --
+--                                                                          --
+--                                 B o d y                                  --
+--                                                                          --
+--        Copyright (C) 2008-2017, Free Software Foundation, Inc.           --
+--                                                                          --
+-- GNAT 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/>.                                          --
+--                                                                          --
+-- GNAT was originally developed  by the GNAT team at  New York University. --
+-- Extensive contributions were provided by Ada Core Technologies Inc.      --
+--                                                                          --
+------------------------------------------------------------------------------
+
+with Interfaces.C; use Interfaces.C;
+
+package body Ada.Calendar.Conversions is
+
+   -----------------
+   -- To_Ada_Time --
+   -----------------
+
+   function To_Ada_Time (Unix_Time : long) return Time is
+      Val : constant Long_Integer := Long_Integer (Unix_Time);
+   begin
+      return Conversion_Operations.To_Ada_Time (Val);
+   end To_Ada_Time;
+
+   -----------------
+   -- To_Ada_Time --
+   -----------------
+
+   function To_Ada_Time
+     (tm_year  : int;
+      tm_mon   : int;
+      tm_day   : int;
+      tm_hour  : int;
+      tm_min   : int;
+      tm_sec   : int;
+      tm_isdst : int) return Time
+   is
+      Year   : constant Integer := Integer (tm_year);
+      Month  : constant Integer := Integer (tm_mon);
+      Day    : constant Integer := Integer (tm_day);
+      Hour   : constant Integer := Integer (tm_hour);
+      Minute : constant Integer := Integer (tm_min);
+      Second : constant Integer := Integer (tm_sec);
+      DST    : constant Integer := Integer (tm_isdst);
+   begin
+      return
+        Conversion_Operations.To_Ada_Time
+          (Year, Month, Day, Hour, Minute, Second, DST);
+   end To_Ada_Time;
+
+   -----------------
+   -- To_Duration --
+   -----------------
+
+   function To_Duration
+     (tv_sec  : long;
+      tv_nsec : long) return Duration
+   is
+      Secs      : constant Long_Integer := Long_Integer (tv_sec);
+      Nano_Secs : constant Long_Integer := Long_Integer (tv_nsec);
+   begin
+      return Conversion_Operations.To_Duration (Secs, Nano_Secs);
+   end To_Duration;
+
+   ------------------------
+   -- To_Struct_Timespec --
+   ------------------------
+
+   procedure To_Struct_Timespec
+     (D       : Duration;
+      tv_sec  : out long;
+      tv_nsec : out long)
+   is
+      Secs      : Long_Integer;
+      Nano_Secs : Long_Integer;
+
+   begin
+      Conversion_Operations.To_Struct_Timespec (D, Secs, Nano_Secs);
+
+      tv_sec  := long (Secs);
+      tv_nsec := long (Nano_Secs);
+   end To_Struct_Timespec;
+
+   ------------------
+   -- To_Struct_Tm --
+   ------------------
+
+   procedure To_Struct_Tm
+     (T       : Time;
+      tm_year : out int;
+      tm_mon  : out int;
+      tm_day  : out int;
+      tm_hour : out int;
+      tm_min  : out int;
+      tm_sec  : out int)
+   is
+      Year   : Integer;
+      Month  : Integer;
+      Day    : Integer;
+      Hour   : Integer;
+      Minute : Integer;
+      Second : Integer;
+
+   begin
+      Conversion_Operations.To_Struct_Tm
+        (T, Year, Month, Day, Hour, Minute, Second);
+
+      tm_year := int (Year);
+      tm_mon  := int (Month);
+      tm_day  := int (Day);
+      tm_hour := int (Hour);
+      tm_min  := int (Minute);
+      tm_sec  := int (Second);
+   end To_Struct_Tm;
+
+   ------------------
+   -- To_Unix_Time --
+   ------------------
+
+   function To_Unix_Time (Ada_Time : Time) return long is
+      Val : constant Long_Integer :=
+        Conversion_Operations.To_Unix_Time (Ada_Time);
+   begin
+      return long (Val);
+   end To_Unix_Time;
+
+end Ada.Calendar.Conversions;