1------------------------------------------------------------------------------ 2-- -- 3-- GNAT COMPILER COMPONENTS -- 4-- -- 5-- S Y S T E M . A D D R E S S _ O P E R A T I O N S -- 6-- -- 7-- B o d y -- 8-- -- 9-- Copyright (C) 2004-2013, Free Software Foundation, Inc. -- 10-- -- 11-- GNAT is free software; you can redistribute it and/or modify it under -- 12-- terms of the GNU General Public License as published by the Free Soft- -- 13-- ware Foundation; either version 3, or (at your option) any later ver- -- 14-- sion. GNAT is distributed in the hope that it will be useful, but WITH- -- 15-- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY -- 16-- or FITNESS FOR A PARTICULAR PURPOSE. -- 17-- -- 18-- As a special exception under Section 7 of GPL version 3, you are granted -- 19-- additional permissions described in the GCC Runtime Library Exception, -- 20-- version 3.1, as published by the Free Software Foundation. -- 21-- -- 22-- You should have received a copy of the GNU General Public License and -- 23-- a copy of the GCC Runtime Library Exception along with this program; -- 24-- see the files COPYING3 and COPYING.RUNTIME respectively. If not, see -- 25-- <http://www.gnu.org/licenses/>. -- 26-- -- 27-- GNAT was originally developed by the GNAT team at New York University. -- 28-- Extensive contributions were provided by Ada Core Technologies Inc. -- 29-- -- 30------------------------------------------------------------------------------ 31 32pragma Compiler_Unit_Warning; 33 34with Ada.Unchecked_Conversion; 35 36package body System.Address_Operations is 37 38 type IA is mod 2 ** Address'Size; 39 -- The type used to provide the actual desired operations 40 41 function I is new Ada.Unchecked_Conversion (Address, IA); 42 function A is new Ada.Unchecked_Conversion (IA, Address); 43 -- The operations are implemented by unchecked conversion to type IA, 44 -- followed by doing the intrinsic operation on the IA values, followed 45 -- by converting the result back to type Address. 46 47 ---------- 48 -- AddA -- 49 ---------- 50 51 function AddA (Left, Right : Address) return Address is 52 begin 53 return A (I (Left) + I (Right)); 54 end AddA; 55 56 ---------- 57 -- AndA -- 58 ---------- 59 60 function AndA (Left, Right : Address) return Address is 61 begin 62 return A (I (Left) and I (Right)); 63 end AndA; 64 65 ---------- 66 -- DivA -- 67 ---------- 68 69 function DivA (Left, Right : Address) return Address is 70 begin 71 return A (I (Left) / I (Right)); 72 end DivA; 73 74 ---------- 75 -- ModA -- 76 ---------- 77 78 function ModA (Left, Right : Address) return Address is 79 begin 80 return A (I (Left) mod I (Right)); 81 end ModA; 82 83 --------- 84 -- MulA -- 85 --------- 86 87 function MulA (Left, Right : Address) return Address is 88 begin 89 return A (I (Left) * I (Right)); 90 end MulA; 91 92 --------- 93 -- OrA -- 94 --------- 95 96 function OrA (Left, Right : Address) return Address is 97 begin 98 return A (I (Left) or I (Right)); 99 end OrA; 100 101 ---------- 102 -- SubA -- 103 ---------- 104 105 function SubA (Left, Right : Address) return Address is 106 begin 107 return A (I (Left) - I (Right)); 108 end SubA; 109 110end System.Address_Operations; 111