1 ------------------------------------------------------------------------------
3 -- GNAT COMPILER COMPONENTS --
5 -- S Y S T E M . A D D R E S S _ O P E R A T I O N S --
9 -- Copyright (C) 2004-2024, Free Software Foundation, Inc. --
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. --
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. --
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/>. --
27 -- GNAT was originally developed by the GNAT team at New York University. --
28 -- Extensive contributions were provided by Ada Core Technologies Inc. --
30 ------------------------------------------------------------------------------
32 with Ada
.Unchecked_Conversion
;
34 package body System
.Address_Operations
is
36 type IA
is mod 2 ** Address
'Size;
37 -- The type used to provide the actual desired operations
39 function I
is new Ada
.Unchecked_Conversion
(Address
, IA
);
40 function A
is new Ada
.Unchecked_Conversion
(IA
, Address
);
41 -- The operations are implemented by unchecked conversion to type IA,
42 -- followed by doing the intrinsic operation on the IA values, followed
43 -- by converting the result back to type Address.
49 function AddA
(Left
, Right
: Address
) return Address
is
51 return A
(I
(Left
) + I
(Right
));
58 function AndA
(Left
, Right
: Address
) return Address
is
60 return A
(I
(Left
) and I
(Right
));
67 function DivA
(Left
, Right
: Address
) return Address
is
69 return A
(I
(Left
) / I
(Right
));
76 function ModA
(Left
, Right
: Address
) return Address
is
78 return A
(I
(Left
) mod I
(Right
));
85 function MulA
(Left
, Right
: Address
) return Address
is
87 return A
(I
(Left
) * I
(Right
));
94 function OrA
(Left
, Right
: Address
) return Address
is
96 return A
(I
(Left
) or I
(Right
));
103 function SubA
(Left
, Right
: Address
) return Address
is
105 return A
(I
(Left
) - I
(Right
));
108 end System
.Address_Operations
;