524c02d73c
2006-10-31 Robert Dewar <dewar@adacore.com> * a-taster.adb, s-traent-vms.adb, a-elchha.ads, a-elchha.adb, a-exctra.adb, ali-util.adb, exp_disp.ads, s-stalib.ads, s-traent.adb, s-addope.ads, s-addope.adb, a-rbtgso.adb, a-crbltr.ads, a-coprnu.adb, a-cgcaso.adb, a-cgarso.adb, a-cgaaso.adb, a-coormu.adb, a-ciormu.adb, a-rbtgso.ads, a-stunha.adb, a-stunha.adb, a-ciorma.adb, a-coorma.adb, a-secain.adb, a-slcain.adb, a-shcain.adb, a-stwiha.adb, a-stwiha.adb, a-strhas.adb, a-strhas.adb, a-stzhas.adb, a-stzhas.adb, a-szuzha.adb, a-chacon.adb, a-chacon.adb, a-chacon.ads, a-stboha.adb, a-swbwha.adb, a-szbzha.adb: Minor reformatting. Fix header. * a-numaux-x86.adb: Add parentheses for use of unary minus * a-ngcefu.adb: Supply missing parentheses for unary minus * a-ngcoty.adb: Add parens for use of unary minus * a-ngelfu.adb: Add missing parens for unary minus * a-tifiio.adb: Add parentheses for uses of unary minus From-SVN: r118231
111 lines
4.1 KiB
Ada
111 lines
4.1 KiB
Ada
------------------------------------------------------------------------------
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-- --
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-- GNAT COMPILER COMPONENTS --
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-- --
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-- S Y S T E M . A D D R E S S _ O P E R A T I O N S --
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-- --
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-- B o d y --
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-- --
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-- Copyright (C) 2004-2006 Free Software Foundation, Inc. --
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-- --
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-- GNAT is free software; you can redistribute it and/or modify it under --
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-- terms of the GNU General Public License as published by the Free Soft- --
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-- ware Foundation; either version 2, or (at your option) any later ver- --
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-- sion. GNAT is distributed in the hope that it will be useful, but WITH- --
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-- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY --
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-- or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License --
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-- for more details. You should have received a copy of the GNU General --
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-- Public License distributed with GNAT; see file COPYING. If not, write --
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-- to the Free Software Foundation, 51 Franklin Street, Fifth Floor, --
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-- Boston, MA 02110-1301, USA. --
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-- --
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-- As a special exception, if other files instantiate generics from this --
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-- unit, or you link this unit with other files to produce an executable, --
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-- this unit does not by itself cause the resulting executable to be --
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-- covered by the GNU General Public License. This exception does not --
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-- however invalidate any other reasons why the executable file might be --
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-- covered by the GNU Public License. --
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-- --
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-- GNAT was originally developed by the GNAT team at New York University. --
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-- Extensive contributions were provided by Ada Core Technologies Inc. --
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-- --
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------------------------------------------------------------------------------
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with Unchecked_Conversion;
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package body System.Address_Operations is
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type IA is mod 2 ** Address'Size;
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-- The type used to provide the actual desired operations
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function I is new Unchecked_Conversion (Address, IA);
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function A is new Unchecked_Conversion (IA, Address);
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-- The operations are implemented by unchecked conversion to type IA,
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-- followed by doing the intrinsic operation on the IA values, followed
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-- by converting the result back to type Address.
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----------
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-- AddA --
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----------
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function AddA (Left, Right : Address) return Address is
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begin
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return A (I (Left) + I (Right));
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end AddA;
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----------
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-- AndA --
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----------
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function AndA (Left, Right : Address) return Address is
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begin
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return A (I (Left) and I (Right));
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end AndA;
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----------
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-- DivA --
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----------
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function DivA (Left, Right : Address) return Address is
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begin
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return A (I (Left) / I (Right));
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end DivA;
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----------
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-- ModA --
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----------
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function ModA (Left, Right : Address) return Address is
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begin
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return A (I (Left) mod I (Right));
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end ModA;
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---------
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-- MulA --
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---------
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function MulA (Left, Right : Address) return Address is
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begin
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return A (I (Left) * I (Right));
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end MulA;
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---------
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-- OrA --
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---------
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function OrA (Left, Right : Address) return Address is
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begin
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return A (I (Left) or I (Right));
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end OrA;
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----------
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-- SubA --
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----------
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function SubA (Left, Right : Address) return Address is
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begin
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return A (I (Left) - I (Right));
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end SubA;
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end System.Address_Operations;
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