------------------------------------------------------------------------------ -- -- -- GNAT COMPILER COMPONENTS -- -- -- -- S Y S T E M . A D D R E S S _ O P E R A T I O N S -- -- -- -- B o d y -- -- -- -- Copyright (C) 2004 Free Software Foundation, Inc. -- -- -- -- This specification is derived from the Ada Reference Manual for use with -- -- GNAT. The copyright notice above, and the license provisions that follow -- -- apply solely to the implementation dependent sections of this file. -- -- -- -- 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. -- -- -- ------------------------------------------------------------------------------ with Unchecked_Conversion; package body System.Address_Operations is type IA is mod 2 ** Address'Size; -- The type used to provide the actual desired operations function I is new Unchecked_Conversion (Address, IA); function A is new Unchecked_Conversion (IA, Address); -- The operations are implemented by unchecked conversion to type IA, -- followed by doing the intrinsic operation on the IA values, followed -- by converting the result back to type Address. ---------- -- AddA -- ---------- function AddA (Left, Right : Address) return Address is begin return A (I (Left) + I (Right)); end AddA; ---------- -- AndA -- ---------- function AndA (Left, Right : Address) return Address is begin return A (I (Left) and I (Right)); end AndA; ---------- -- DivA -- ---------- function DivA (Left, Right : Address) return Address is begin return A (I (Left) / I (Right)); end DivA; ---------- -- ModA -- ---------- function ModA (Left, Right : Address) return Address is begin return A (I (Left) mod I (Right)); end ModA; --------- -- MulA -- --------- function MulA (Left, Right : Address) return Address is begin return A (I (Left) * I (Right)); end MulA; --------- -- OrA -- --------- function OrA (Left, Right : Address) return Address is begin return A (I (Left) or I (Right)); end OrA; ---------- -- SubA -- ---------- function SubA (Left, Right : Address) return Address is begin return A (I (Left) - I (Right)); end SubA; end System.Address_Operations;