New Language: Ada

From-SVN: r45952

1 files changed, 434 insertions, 0 deletions

diff --git a/gcc/ada/5ntaprop.adb b/gcc/ada/5ntaprop.adb
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+------------------------------------------------------------------------------
+--                                                                          --
+--                GNU ADA RUN-TIME LIBRARY (GNARL) COMPONENTS               --
+--                                                                          --
+--     S Y S T E M . T A S K _ P R I M I T I V E S . O P E R A T I O N S    --
+--                                                                          --
+--                                  B o d y                                 --
+--                                                                          --
+--                             $Revision: 1.33 $
+--                                                                          --
+--             Copyright (C) 1991-2001, Florida State University            --
+--                                                                          --
+-- 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 a no tasking version of this package
+
+--  This package contains all the GNULL primitives that interface directly
+--  with the underlying OS.
+
+pragma Polling (Off);
+--  Turn off polling, we do not want ATC polling to take place during
+--  tasking operations. It causes infinite loops and other problems.
+
+with System.Tasking;
+--  used for Ada_Task_Control_Block
+--           Task_ID
+
+with System.OS_Primitives;
+--  used for Delay_Modes
+
+with System.Error_Reporting;
+--  used for Shutdown
+
+package body System.Task_Primitives.Operations is
+
+   use System.Tasking;
+   use System.Parameters;
+   use System.OS_Primitives;
+
+   -------------------
+   --  Stack_Guard  --
+   -------------------
+
+   procedure Stack_Guard (T : ST.Task_ID; On : Boolean) is
+   begin
+      null;
+   end Stack_Guard;
+
+   --------------------
+   -- Get_Thread_Id  --
+   --------------------
+
+   function Get_Thread_Id (T : ST.Task_ID) return OSI.Thread_Id is
+   begin
+      return OSI.Thread_Id (T.Common.LL.Thread);
+   end Get_Thread_Id;
+
+   ----------
+   -- Self --
+   ----------
+
+   function Self return Task_ID is
+   begin
+      return Null_Task;
+   end Self;
+
+   ---------------------
+   -- Initialize_Lock --
+   ---------------------
+
+   procedure Initialize_Lock
+     (Prio : System.Any_Priority;
+      L    : access Lock)
+   is
+   begin
+      null;
+   end Initialize_Lock;
+
+   procedure Initialize_Lock (L : access RTS_Lock; Level : Lock_Level) is
+   begin
+      null;
+   end Initialize_Lock;
+
+   -------------------
+   -- Finalize_Lock --
+   -------------------
+
+   procedure Finalize_Lock (L : access Lock) is
+   begin
+      null;
+   end Finalize_Lock;
+
+   procedure Finalize_Lock (L : access RTS_Lock) is
+   begin
+      null;
+   end Finalize_Lock;
+
+   ----------------
+   -- Write_Lock --
+   ----------------
+
+   procedure Write_Lock (L : access Lock; Ceiling_Violation : out Boolean) is
+   begin
+      Ceiling_Violation := False;
+   end Write_Lock;
+
+   procedure Write_Lock (L : access RTS_Lock) is
+   begin
+      null;
+   end Write_Lock;
+
+   procedure Write_Lock (T : Task_ID) is
+   begin
+      null;
+   end Write_Lock;
+
+   ---------------
+   -- Read_Lock --
+   ---------------
+
+   procedure Read_Lock (L : access Lock; Ceiling_Violation : out Boolean) is
+   begin
+      Ceiling_Violation := False;
+   end Read_Lock;
+
+   ------------
+   -- Unlock --
+   ------------
+
+   procedure Unlock (L : access Lock) is
+   begin
+      null;
+   end Unlock;
+
+   procedure Unlock (L : access RTS_Lock) is
+   begin
+      null;
+   end Unlock;
+
+   procedure Unlock (T : Task_ID) is
+   begin
+      null;
+   end Unlock;
+
+   -------------
+   --  Sleep  --
+   -------------
+
+   procedure Sleep (Self_ID : Task_ID;
+                    Reason  : System.Tasking.Task_States) is
+   begin
+      null;
+   end Sleep;
+
+   -----------------
+   -- Timed_Sleep --
+   -----------------
+
+   procedure Timed_Sleep
+     (Self_ID  : Task_ID;
+      Time     : Duration;
+      Mode     : ST.Delay_Modes;
+      Reason   : System.Tasking.Task_States;
+      Timedout : out Boolean;
+      Yielded  : out Boolean) is
+   begin
+      Timedout := False;
+      Yielded := False;
+   end Timed_Sleep;
+
+   -----------------
+   -- Timed_Delay --
+   -----------------
+
+   procedure Timed_Delay
+     (Self_ID  : Task_ID;
+      Time     : Duration;
+      Mode     : ST.Delay_Modes)
+   is
+      Rel_Time : Duration;
+
+      procedure sleep (How_Long : Natural);
+      pragma Import (C, sleep, "sleep");
+
+   begin
+      if Mode = Relative then
+         Rel_Time := Time;
+      else
+         Rel_Time := Time - Monotonic_Clock;
+      end if;
+
+      if Rel_Time > 0.0 then
+         sleep (Natural (Rel_Time));
+      end if;
+   end Timed_Delay;
+
+   ---------------------
+   -- Monotonic_Clock --
+   ---------------------
+
+   function Monotonic_Clock return Duration is
+   begin
+      return 0.0;
+   end Monotonic_Clock;
+
+   -------------------
+   -- RT_Resolution --
+   -------------------
+
+   function RT_Resolution return Duration is
+   begin
+      return 10#1.0#E-6;
+   end RT_Resolution;
+
+   ------------
+   -- Wakeup --
+   ------------
+
+   procedure Wakeup (T : Task_ID; Reason : System.Tasking.Task_States) is
+   begin
+      null;
+   end Wakeup;
+
+   ------------------
+   -- Set_Priority --
+   ------------------
+
+   procedure Set_Priority
+     (T : Task_ID;
+      Prio : System.Any_Priority;
+      Loss_Of_Inheritance : Boolean := False) is
+   begin
+      null;
+   end Set_Priority;
+
+   ------------------
+   -- Get_Priority --
+   ------------------
+
+   function Get_Priority (T : Task_ID) return System.Any_Priority is
+   begin
+      return 0;
+   end Get_Priority;
+
+   ----------------
+   -- Enter_Task --
+   ----------------
+
+   procedure Enter_Task (Self_ID : Task_ID) is
+   begin
+      null;
+   end Enter_Task;
+
+   --------------
+   -- New_ATCB --
+   --------------
+
+   function New_ATCB (Entry_Num : Task_Entry_Index) return Task_ID is
+   begin
+      return new Ada_Task_Control_Block (Entry_Num);
+   end New_ATCB;
+
+   ----------------------
+   --  Initialize_TCB  --
+   ----------------------
+
+   procedure Initialize_TCB (Self_ID : Task_ID; Succeeded : out Boolean) is
+   begin
+      Succeeded := False;
+   end Initialize_TCB;
+
+   -----------------
+   -- Create_Task --
+   -----------------
+
+   procedure Create_Task
+     (T          : Task_ID;
+      Wrapper    : System.Address;
+      Stack_Size : System.Parameters.Size_Type;
+      Priority   : System.Any_Priority;
+      Succeeded  : out Boolean)
+   is
+   begin
+      Succeeded := False;
+   end Create_Task;
+
+   ------------------
+   -- Finalize_TCB --
+   ------------------
+
+   procedure Finalize_TCB (T : Task_ID) is
+   begin
+      null;
+   end Finalize_TCB;
+
+   ---------------
+   -- Exit_Task --
+   ---------------
+
+   procedure Exit_Task is
+   begin
+      null;
+   end Exit_Task;
+
+   ----------------
+   -- Abort_Task --
+   ----------------
+
+   procedure Abort_Task (T : Task_ID) is
+   begin
+      null;
+   end Abort_Task;
+
+   -----------
+   -- Yield --
+   -----------
+
+   procedure Yield (Do_Yield : Boolean := True) is
+   begin
+      null;
+   end Yield;
+
+   ----------------
+   -- Check_Exit --
+   ----------------
+
+   --  Dummy versions.  The only currently working versions is for solaris
+   --  (native).
+
+   function Check_Exit (Self_ID : ST.Task_ID) return Boolean is
+   begin
+      return True;
+   end Check_Exit;
+
+   --------------------
+   -- Check_No_Locks --
+   --------------------
+
+   function Check_No_Locks (Self_ID : ST.Task_ID) return Boolean is
+   begin
+      return True;
+   end Check_No_Locks;
+
+   ----------------------
+   -- Environment_Task --
+   ----------------------
+
+   function Environment_Task return Task_ID is
+   begin
+      return null;
+   end Environment_Task;
+
+   -------------------------
+   -- Lock_All_Tasks_List --
+   -------------------------
+
+   procedure Lock_All_Tasks_List is
+   begin
+      null;
+   end Lock_All_Tasks_List;
+
+   ---------------------------
+   -- Unlock_All_Tasks_List --
+   ---------------------------
+
+   procedure Unlock_All_Tasks_List is
+   begin
+      null;
+   end Unlock_All_Tasks_List;
+
+   ------------------
+   -- Suspend_Task --
+   ------------------
+
+   function Suspend_Task
+     (T           : ST.Task_ID;
+      Thread_Self : OSI.Thread_Id) return Boolean is
+   begin
+      return False;
+   end Suspend_Task;
+
+   -----------------
+   -- Resume_Task --
+   -----------------
+
+   function Resume_Task
+     (T           : ST.Task_ID;
+      Thread_Self : OSI.Thread_Id) return Boolean is
+   begin
+      return False;
+   end Resume_Task;
+
+   ----------------
+   -- Initialize --
+   ----------------
+
+   procedure Initialize (Environment_Task : Task_ID) is
+   begin
+      null;
+   end Initialize;
+
+   No_Tasking : Boolean;
+
+begin
+
+   --  Can't raise an exception because target independent packages try to
+   --  do an Abort_Defer, which gets a memory fault.
+
+   No_Tasking :=
+     System.Error_Reporting.Shutdown
+       ("Tasking not implemented on this configuration");
+end System.Task_Primitives.Operations;