--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/gcc/ada/libgnarl/s-osinte__lynxos178.adb	Fri Oct 27 22:46:09 2017 +0900
@@ -0,0 +1,178 @@
+------------------------------------------------------------------------------
+--                                                                          --
+--                 GNAT RUN-TIME LIBRARY (GNARL) COMPONENTS                 --
+--                                                                          --
+--                   S Y S T E M . O S _ I N T E R F A C E                  --
+--                                                                          --
+--                                  B o d y                                 --
+--                                                                          --
+--                     Copyright (C) 2001-2017, AdaCore                     --
+--                                                                          --
+-- 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/>.                                          --
+--                                                                          --
+-- GNARL was developed by the GNARL team at Florida State University.       --
+-- Extensive contributions were provided by Ada Core Technologies, Inc.     --
+--                                                                          --
+------------------------------------------------------------------------------
+
+--  Version of System.OS_Interface for LynxOS-178 (POSIX Threads)
+
+pragma Polling (Off);
+--  Turn off polling, we do not want ATC polling to take place during tasking
+--  operations. It may cause infinite loops and other problems.
+
+package body System.OS_Interface is
+
+   ------------------
+   --  Current_CPU --
+   ------------------
+
+   function Current_CPU return Multiprocessors.CPU is
+   begin
+      --  No multiprocessor support, always return the first CPU Id
+
+      return Multiprocessors.CPU'First;
+   end Current_CPU;
+
+   --------------------
+   --  Get_Affinity  --
+   --------------------
+
+   function Get_Affinity (Id : Thread_Id) return Multiprocessors.CPU_Range is
+      pragma Unreferenced (Id);
+
+   begin
+      --  No multiprocessor support, always return Not_A_Specific_CPU
+
+      return Multiprocessors.Not_A_Specific_CPU;
+   end Get_Affinity;
+
+   ---------------
+   --  Get_CPU  --
+   ---------------
+
+   function Get_CPU  (Id : Thread_Id) return Multiprocessors.CPU is
+      pragma Unreferenced (Id);
+
+   begin
+      --  No multiprocessor support, always return the first CPU Id
+
+      return Multiprocessors.CPU'First;
+   end Get_CPU;
+
+   -------------------
+   -- Get_Page_Size --
+   -------------------
+
+   SC_PAGESIZE : constant := 17;
+   --  C macro to get pagesize value from sysconf
+
+   function sysconf (name : int) return long;
+   pragma Import (C, sysconf, "sysconf");
+
+   function Get_Page_Size return int is
+   begin
+      return int (sysconf (SC_PAGESIZE));
+   end Get_Page_Size;
+
+   -----------------
+   -- To_Duration --
+   -----------------
+
+   function To_Duration (TS : timespec) return Duration is
+   begin
+      return Duration (TS.tv_sec) + Duration (TS.tv_nsec) / 10#1#E9;
+   end To_Duration;
+
+   ------------------------
+   -- To_Target_Priority --
+   ------------------------
+
+   function To_Target_Priority
+     (Prio : System.Any_Priority) return Interfaces.C.int
+   is
+   begin
+      return Interfaces.C.int (Prio);
+   end To_Target_Priority;
+
+   -----------------
+   -- To_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 is negative 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 (Long_Long_Integer (F * 10#1#E9)));
+   end To_Timespec;
+
+   -------------
+   -- sigwait --
+   -------------
+
+   function sigwait
+     (set :  access sigset_t;
+      sig :  access Signal)
+      return int
+   is
+      function sigwaitinfo
+        (set   : access sigset_t;
+         info  : System.Address) return Signal;
+      pragma Import (C, sigwaitinfo, "sigwaitinfo");
+
+   begin
+      sig.all := sigwaitinfo (set, Null_Address);
+
+      if sig.all = -1 then
+         return errno;
+      end if;
+
+      return 0;
+   end sigwait;
+
+   --------------------
+   -- Get_Stack_Base --
+   --------------------
+
+   function Get_Stack_Base (thread : pthread_t) return Address is
+      pragma Warnings (Off, thread);
+   begin
+      return Null_Address;
+   end Get_Stack_Base;
+
+   ------------------
+   -- pthread_init --
+   ------------------
+
+   procedure pthread_init is
+   begin
+      null;
+   end pthread_init;
+
+end System.OS_Interface;