Mercurial > hg > CbC > CbC_gcc
comparison gcc/ada/libgnat/s-addope.adb @ 111:04ced10e8804
gcc 7
| author | kono |
|---|---|
| date | Fri, 27 Oct 2017 22:46:09 +0900 |
| parents | |
| children | 84e7813d76e9 |
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| 68:561a7518be6b | 111:04ced10e8804 |
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| 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) 2004-2017, 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 | |
| 32 pragma Compiler_Unit_Warning; | |
| 33 | |
| 34 with Ada.Unchecked_Conversion; | |
| 35 | |
| 36 package 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 | |
| 110 end System.Address_Operations; |