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------------------------------------------------------------------------------
-- --
-- GNAT SYSTEM UTILITIES --
-- --
-- G N A T P S Y S --
-- --
-- B o d y --
-- --
-- $Revision: 1.3 $ --
-- --
-- Copyright (C) 1997 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. --
-- --
-- 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). --
-- --
------------------------------------------------------------------------------
-- Program to print out listing of System package with all constants
-- appearing explicitly.
with Ada.Text_IO;
with System; use System;
with Gnatvsn;
procedure GnatPsys is
pragma Ident (Gnatvsn.Gnat_Version_String);
procedure P (Item : String) renames Ada.Text_IO.Put_Line;
begin
P ("package System is");
P ("pragma Pure (System);");
P ("");
P (" type Name is (SYSTEM_NAME_GNAT);");
P (" System_Name : constant Name := SYSTEM_NAME_GNAT;");
P ("");
P (" -- System-Dependent Named Numbers");
P ("");
P (" Min_Int : constant := -(2 **" &
Long_Long_Integer'Image (Long_Long_Integer'Size - 1) & ");");
P (" Max_Int : constant := 2 **" &
Long_Long_Integer'Image (Long_Long_Integer'Size - 1) & " - 1;");
P ("");
P (" Max_Binary_Modulus : constant := 2 **" &
Long_Long_Integer'Image (Long_Long_Integer'Size) & ";");
P (" Max_Nonbinary_Modulus : constant :=" &
Integer'Image (Integer'Last) & ";");
P ("");
P (" Max_Base_Digits : constant :=" &
Natural'Image (Long_Long_Float'Digits) & ";");
P (" Max_Digits : constant :=" &
Natural'Image (Long_Long_Float'Digits) & ";");
P ("");
P (" Max_Mantissa : constant := 63;");
P (" Fine_Delta : constant := 2.0 ** (-Max_Mantissa);");
P ("");
P (" Tick : constant :=" &
Duration'Image (Duration (Standard'Tick)) & ";");
P ("");
P (" -- Storage-related Declarations");
P ("");
P (" type Address is private;");
P (" Null_Address : constant Address;");
P ("");
P (" Storage_Unit : constant :=" &
Natural'Image (Standard'Storage_Unit) & ";");
P (" Word_Size : constant :=" &
Natural'Image (Standard'Word_Size) & ";");
P (" Memory_Size : constant := 2 **" &
Natural'Image (Standard'Address_Size) & ";");
P ("");
P (" -- Address comparison");
P ("");
P (" function ""<"" (Left, Right : Address) return Boolean;");
P (" function ""<="" (Left, Right : Address) return Boolean;");
P (" function "">"" (Left, Right : Address) return Boolean;");
P (" function "">="" (Left, Right : Address) return Boolean;");
P (" function ""="" (Left, Right : Address) return Boolean;");
P ("");
P (" pragma Import (Intrinsic, ""<""); ");
P (" pragma Import (Intrinsic, ""<="");");
P (" pragma Import (Intrinsic, "">""); ");
P (" pragma Import (Intrinsic, "">="");");
P (" pragma Import (Intrinsic, ""=""); ");
P ("");
P (" -- Other System-Dependent Declarations");
P ("");
P (" type Bit_Order is (High_Order_First, Low_Order_First);");
P (" Default_Bit_Order : constant Bit_Order;");
P ("");
P (" -- Priority-related Declarations (RM D.1)");
P ("");
P (" subtype Any_Priority is Integer range 0 .." &
Natural'Image (Standard'Max_Interrupt_Priority) & ";");
P ("");
P (" subtype Priority is Any_Priority range 0 .." &
Natural'Image (Standard'Max_Priority) & ";");
P ("");
P (" subtype Interrupt_Priority is Any_Priority range" &
Natural'Image (Standard'Max_Priority + 1) & " .." &
Natural'Image (Standard'Max_Interrupt_Priority) & ";");
P ("");
P (" Default_Priority : constant Priority :=" &
Natural'Image ((Priority'First + Priority'Last) / 2) & ";");
P ("");
P ("private");
P ("");
P (" type Address is mod Memory_Size; ");
P (" Null_Address : constant Address := 0; ");
P (" ");
P (" Default_Bit_Order : constant Bit_Order := " &
Bit_Order'Image (Bit_Order'Val (Standard'Default_Bit_Order)) & ";");
P ("");
P ("end System;");
end GnatPsys;
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