From 554fd8c5195424bdbcabf5de30fdc183aba391bd Mon Sep 17 00:00:00 2001 From: upstream source tree Date: Sun, 15 Mar 2015 20:14:05 -0400 Subject: obtained gcc-4.6.4.tar.bz2 from upstream website; verified gcc-4.6.4.tar.bz2.sig; imported gcc-4.6.4 source tree from verified upstream tarball. downloading a git-generated archive based on the 'upstream' tag should provide you with a source tree that is binary identical to the one extracted from the above tarball. if you have obtained the source via the command 'git clone', however, do note that line-endings of files in your working directory might differ from line-endings of the respective files in the upstream repository. --- gcc/ada/s-addope.ads | 87 ++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 87 insertions(+) create mode 100644 gcc/ada/s-addope.ads (limited to 'gcc/ada/s-addope.ads') diff --git a/gcc/ada/s-addope.ads b/gcc/ada/s-addope.ads new file mode 100644 index 000000000..2d3f58946 --- /dev/null +++ b/gcc/ada/s-addope.ads @@ -0,0 +1,87 @@ +------------------------------------------------------------------------------ +-- -- +-- 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 -- +-- -- +-- S p e c -- +-- -- +-- Copyright (C) 2004-2009, Free Software Foundation, Inc. -- +-- -- +-- 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 3, 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. -- +-- -- +-- As a special exception under Section 7 of GPL version 3, you are granted -- +-- additional permissions described in the GCC Runtime Library Exception, -- +-- version 3.1, as published by the Free Software Foundation. -- +-- -- +-- You should have received a copy of the GNU General Public License and -- +-- a copy of the GCC Runtime Library Exception along with this program; -- +-- see the files COPYING3 and COPYING.RUNTIME respectively. If not, see -- +-- . -- +-- -- +-- GNAT was originally developed by the GNAT team at New York University. -- +-- Extensive contributions were provided by Ada Core Technologies Inc. -- +-- -- +------------------------------------------------------------------------------ + +-- This package provides arithmetic and logical operations on type Address. +-- It is intended for use by other packages in the System hierarchy. For +-- applications requiring this capability, see System.Storage_Elements or +-- the operations introduced in System.Aux_DEC; + +-- The reason we need this package is that arithmetic operations may not +-- be available in the case where type Address is non-private and the +-- operations have been made abstract in the spec of System (to avoid +-- inappropriate use by applications programs). In addition, the logical +-- operations may not be available if type Address is a signed integer. + +pragma Compiler_Unit; + +package System.Address_Operations is + pragma Pure; + + -- The semantics of the arithmetic operations are those that apply to + -- a modular type with the same length as Address, i.e. they provide + -- twos complement wrap around arithmetic treating the address value + -- as an unsigned value, with no overflow checking. + + -- Note that we do not use the infix names for these operations to + -- avoid problems with ambiguities coming from declarations in package + -- Standard (which may or may not be visible depending on the exact + -- form of the declaration of type System.Address). + + -- For addition, subtraction, and multiplication, the effect of overflow + -- is 2's complement wrapping (as though the type Address were unsigned). + + -- For division and modulus operations, the caller is responsible for + -- ensuring that the Right argument is non-zero, and the effect of the + -- call is not specified if a zero argument is passed. + + function AddA (Left, Right : Address) return Address; + function SubA (Left, Right : Address) return Address; + function MulA (Left, Right : Address) return Address; + function DivA (Left, Right : Address) return Address; + function ModA (Left, Right : Address) return Address; + + -- The semantics of the logical operations are those that apply to + -- a modular type with the same length as Address, i.e. they provide + -- bit-wise operations on all bits of the value (including the sign + -- bit if Address is a signed integer type). + + function AndA (Left, Right : Address) return Address; + function OrA (Left, Right : Address) return Address; + + pragma Inline_Always (AddA); + pragma Inline_Always (SubA); + pragma Inline_Always (MulA); + pragma Inline_Always (DivA); + pragma Inline_Always (ModA); + pragma Inline_Always (AndA); + pragma Inline_Always (OrA); + +end System.Address_Operations; -- cgit v1.2.3