------------------------------------------------------------------------------
--                                                                          --
--                         GNAT COMPILER COMPONENTS                         --
--                                                                          --
--                    S Y S T E M . P A R A M E T E R S                     --
--                                                                          --
--                                 S p e c                                  --
--                                                                          --
--                            $Revision: 1.16 $                             --
--                                                                          --
--   Copyright (C) 1992,1993,1994,1995,1996 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. --
-- It is now maintained by Ada Core Technologies Inc (http://www.gnat.com). --
--                                                                          --
------------------------------------------------------------------------------

--  This package defines some system dependent parameters for GNAT. These
--  are values that are referenced by the runtime library and are therefore
--  relevant to the target machine.

--  The parameters whose value is defined in the spec are not generally
--  expected to be changed. If they are changed, it will be necessary to
--  recompile the run-time library.

--  The parameters which are defined by functions can be changed by modifying
--  the body of System.Parameters in file s-parame.adb. A change to this body
--  requires only rebinding and relinking of the application.

package System.Parameters is
pragma Pure (Parameters);

   Count_Max : constant := Integer'Last;
   --  Upper bound of type Ada.Text_IO.Count. This value must be large
   --  enough so that the assumption that the Line, Column and Page
   --  counts can never exceed this value is a valid assumption.

   Field_Max : constant := 100;
   --  Upper bound of type Ada.Text_IO.Field

   type Task_Storage_Size is new integer;
   --  Type used in tasking units for task storage size

   type Size_Type is new Task_Storage_Size;
   --  Type used to provide task storage size to runtime

   Unspecified_Size : constant Size_Type := Size_Type'First;
   --  Value used to indicate that no size type is set

   function Default_Stack_Size return Size_Type;
   --  Default task stack size used if none is specified

   function Minimum_Stack_Size return Size_Type;
   --  Minimum task stack size permitted

   Buffer_Kludge_Needed : constant Boolean := True;
   --  Determines whether or not the cleanup buffer kludge is required for
   --  this target. See Exp_Ch7.Expand_Cleanup_Actions for full details.

end System.Parameters;
