------------------------------------------------------------------------------
--                                                                          --
--                         GNAT COMPILER COMPONENTS                         --
--                                                                          --
--                    S Y S T E M . P A R A M E T E R S                     --
--                                                                          --
--                                 B o d y                                  --
--                                                                          --
--          Copyright (C) 1995-2004 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 2,  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.  See the GNU General Public License --
-- for  more details.  You should have  received  a copy of the GNU General --
-- Public License  distributed with GNAT;  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.                                      --
--                                                                          --
-- GNAT was originally developed  by the GNAT team at  New York University. --
-- Extensive contributions were provided by Ada Core Technologies Inc.      --
--                                                                          --
------------------------------------------------------------------------------

--  This is the Linux (native) specific version

package body System.Parameters is

   -------------------------
   -- Adjust_Storage_Size --
   -------------------------

   function Adjust_Storage_Size (Size : Size_Type) return Size_Type is
   begin
      if Size = Unspecified_Size then
         return Default_Stack_Size;

      elsif Size < Minimum_Stack_Size then
         return Minimum_Stack_Size;

      else
         return Size;
      end if;
   end Adjust_Storage_Size;

   ------------------------
   -- Default_Stack_Size --
   ------------------------

   function Default_Stack_Size return Size_Type is
   begin
      return 2 * 1024 * 1024;
   end Default_Stack_Size;

   ------------------------
   -- Minimum_Stack_Size --
   ------------------------

   function Minimum_Stack_Size return Size_Type is
   begin
      --  12K is required for stack-checking to work on this target, using the
      --  System.Stack_Checking runtime facility and possibly relying on the
      --  stack greedy GCC scheme to propagate an exception in the ZCX case.

      return 12 * 1024;
   end Minimum_Stack_Size;

end System.Parameters;