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------------------------------------------------------------------------------

--                                                                          --

--                         GNAT COMPILER COMPONENTS                         --

--                                                                          --

--                    S Y S T E M . S O F T _ L I N K S                     --

--                                                                          --

--                                 B o d y                                  --

--                                                                          --

--          Copyright (C) 1992-2011, 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.      --

--                                                                          --

------------------------------------------------------------------------------

pragma Compiler_Unit;

pragma Polling (Off);

--  We must turn polling off for this unit, because otherwise we get an

--  infinite loop from the code within the Poll routine itself.

with System.Parameters;

pragma Warnings (Off);

--  Disable warnings since System.Secondary_Stack is currently not Preelaborate

with System.Secondary_Stack;

pragma Warnings (On);

package body System.Soft_Links is

   package SST renames System.Secondary_Stack;

   NT_TSD : TSD;

   --  Note: we rely on the default initialization of NT_TSD

   --------------------

   -- Abort_Defer_NT --

   --------------------

   procedure Abort_Defer_NT is

   begin

      null;

   end Abort_Defer_NT;

   ----------------------

   -- Abort_Handler_NT --

   ----------------------

   procedure Abort_Handler_NT is

   begin

      null;

   end Abort_Handler_NT;

   ----------------------

   -- Abort_Undefer_NT --

   ----------------------

   procedure Abort_Undefer_NT is

   begin

      null;

   end Abort_Undefer_NT;

   -----------------

   -- Adafinal_NT --

   -----------------

   procedure Adafinal_NT is

   begin

      --  Handle normal task termination by the environment task, but only

      --  for the normal task termination. In the case of Abnormal and

      --  Unhandled_Exception they must have been handled before, and the

      --  task termination soft link must have been changed so the task

      --  termination routine is not executed twice.

      Task_Termination_Handler.all (Ada.Exceptions.Null_Occurrence);

      --  Finalize all library-level controlled objects if needed

      if Finalize_Library_Objects /=  null then

         Finalize_Library_Objects.all;

      end if;

   end Adafinal_NT;

   ---------------------------

   -- Check_Abort_Status_NT --

   ---------------------------

   function Check_Abort_Status_NT return Integer is

   begin

      return Boolean'Pos (False);

   end Check_Abort_Status_NT;

   ------------------------

   -- Complete_Master_NT --

   ------------------------

   procedure Complete_Master_NT is

   begin

      null;

   end Complete_Master_NT;

   ----------------

   -- Create_TSD --

   ----------------

   procedure Create_TSD (New_TSD : in out TSD) is

      use Parameters;

      SS_Ratio_Dynamic : constant Boolean := Sec_Stack_Percentage = Dynamic;

   begin

      if SS_Ratio_Dynamic then

         SST.SS_Init

           (New_TSD.Sec_Stack_Addr, SST.Default_Secondary_Stack_Size);

      end if;

   end Create_TSD;

   -----------------------

   -- Current_Master_NT --

   -----------------------

   function Current_Master_NT return Integer is

   begin

      return 0;

   end Current_Master_NT;

   -----------------

   -- Destroy_TSD --

   -----------------

   procedure Destroy_TSD (Old_TSD : in out TSD) is

   begin

      SST.SS_Free (Old_TSD.Sec_Stack_Addr);

   end Destroy_TSD;

   ---------------------

   -- Enter_Master_NT --

   ---------------------

   procedure Enter_Master_NT is

   begin

      null;

   end Enter_Master_NT;

   --------------------------

   -- Get_Current_Excep_NT --

   --------------------------

   function Get_Current_Excep_NT return EOA is

   begin

      return NT_TSD.Current_Excep'Access;

   end Get_Current_Excep_NT;

   ------------------------

   -- Get_GNAT_Exception --

   ------------------------

   function Get_GNAT_Exception return Ada.Exceptions.Exception_Id is

   begin

      return Ada.Exceptions.Exception_Identity (Get_Current_Excep.all.all);

   end Get_GNAT_Exception;

   ---------------------------

   -- Get_Jmpbuf_Address_NT --

   ---------------------------

   function Get_Jmpbuf_Address_NT return  Address is

   begin

      return NT_TSD.Jmpbuf_Address;

   end Get_Jmpbuf_Address_NT;

   -----------------------------

   -- Get_Jmpbuf_Address_Soft --

   -----------------------------

   function Get_Jmpbuf_Address_Soft return  Address is

   begin

      return Get_Jmpbuf_Address.all;

   end Get_Jmpbuf_Address_Soft;

   ---------------------------

   -- Get_Sec_Stack_Addr_NT --

   ---------------------------

   function Get_Sec_Stack_Addr_NT return  Address is

   begin

      return NT_TSD.Sec_Stack_Addr;

   end Get_Sec_Stack_Addr_NT;

   -----------------------------

   -- Get_Sec_Stack_Addr_Soft --

   -----------------------------

   function Get_Sec_Stack_Addr_Soft return  Address is

   begin

      return Get_Sec_Stack_Addr.all;

   end Get_Sec_Stack_Addr_Soft;

   -----------------------

   -- Get_Stack_Info_NT --

   -----------------------

   function Get_Stack_Info_NT return Stack_Checking.Stack_Access is

   begin

      return NT_TSD.Pri_Stack_Info'Access;

   end Get_Stack_Info_NT;

   -----------------------------

   -- Save_Library_Occurrence --

   -----------------------------

   procedure Save_Library_Occurrence

     (E : Ada.Exceptions.Exception_Occurrence)

   is

   begin

      if not Library_Exception_Set then

         Library_Exception_Set := True;

         Ada.Exceptions.Save_Occurrence (Library_Exception, E);

      end if;

   end Save_Library_Occurrence;

   ---------------------------

   -- Set_Jmpbuf_Address_NT --

   ---------------------------

   procedure Set_Jmpbuf_Address_NT (Addr : Address) is

   begin

      NT_TSD.Jmpbuf_Address := Addr;

   end Set_Jmpbuf_Address_NT;

   procedure Set_Jmpbuf_Address_Soft (Addr : Address) is

   begin

      Set_Jmpbuf_Address (Addr);

   end Set_Jmpbuf_Address_Soft;

   ---------------------------

   -- Set_Sec_Stack_Addr_NT --

   ---------------------------

   procedure Set_Sec_Stack_Addr_NT (Addr : Address) is

   begin

      NT_TSD.Sec_Stack_Addr := Addr;

   end Set_Sec_Stack_Addr_NT;

   -----------------------------

   -- Set_Sec_Stack_Addr_Soft --

   -----------------------------

   procedure Set_Sec_Stack_Addr_Soft (Addr : Address) is

   begin

      Set_Sec_Stack_Addr (Addr);

   end Set_Sec_Stack_Addr_Soft;

   ------------------

   -- Task_Lock_NT --

   ------------------

   procedure Task_Lock_NT is

   begin

      null;

   end Task_Lock_NT;

   ------------------

   -- Task_Name_NT --

   -------------------

   function Task_Name_NT return String is

   begin

      return "main_task";

   end Task_Name_NT;

   -------------------------

   -- Task_Termination_NT --

   -------------------------

   procedure Task_Termination_NT (Excep : EO) is

      pragma Unreferenced (Excep);

   begin

      null;

   end Task_Termination_NT;

   --------------------

   -- Task_Unlock_NT --

   --------------------

   procedure Task_Unlock_NT is

   begin

      null;

   end Task_Unlock_NT;

   -------------------------

   -- Update_Exception_NT --

   -------------------------

   procedure Update_Exception_NT (X : EO := Current_Target_Exception) is

   begin

      Ada.Exceptions.Save_Occurrence (NT_TSD.Current_Excep, X);

   end Update_Exception_NT;

end System.Soft_Links;