184 lines
6.7 KiB
Ada
184 lines
6.7 KiB
Ada
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------------------------------------------------------------------------------
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-- --
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-- GNAT COMPILER COMPONENTS --
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-- --
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-- I N T E R F A C E S --
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-- --
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-- S p e c --
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-- --
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-- Copyright (C) 2002-2015, Free Software Foundation, Inc. --
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-- --
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-- This specification is derived from the Ada Reference Manual for use with --
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-- GNAT. The copyright notice above, and the license provisions that follow --
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-- apply solely to the implementation dependent sections of this file. --
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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 3, 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. --
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-- --
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-- As a special exception under Section 7 of GPL version 3, you are granted --
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-- additional permissions described in the GCC Runtime Library Exception, --
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-- version 3.1, as published by the Free Software Foundation. --
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-- --
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-- You should have received a copy of the GNU General Public License and --
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-- a copy of the GCC Runtime Library Exception along with this program; --
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-- see the files COPYING3 and COPYING.RUNTIME respectively. If not, see --
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-- <http://www.gnu.org/licenses/>. --
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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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pragma Compiler_Unit_Warning;
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package Interfaces is
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pragma Pure;
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-- All identifiers in this unit are implementation defined
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pragma Implementation_Defined;
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type Integer_8 is range -2 ** 7 .. 2 ** 7 - 1;
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for Integer_8'Size use 8;
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type Integer_16 is range -2 ** 15 .. 2 ** 15 - 1;
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for Integer_16'Size use 16;
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type Integer_32 is range -2 ** 31 .. 2 ** 31 - 1;
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for Integer_32'Size use 32;
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type Integer_64 is new Long_Long_Integer;
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for Integer_64'Size use 64;
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-- Note: we use Long_Long_Integer'First instead of -2 ** 63 to allow this
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-- unit to compile when using custom target configuration files where the
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-- maximum integer is 32 bits. This is useful for static analysis tools
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-- such as SPARK or CodePeer. In the normal case Long_Long_Integer is
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-- always 64-bits so we get the desired 64-bit type.
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type Unsigned_8 is mod 2 ** 8;
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for Unsigned_8'Size use 8;
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type Unsigned_16 is mod 2 ** 16;
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for Unsigned_16'Size use 16;
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type Unsigned_24 is mod 2 ** 24;
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for Unsigned_24'Size use 24;
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-- Declare this type for compatibility with legacy Ada compilers.
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-- This is particularly useful in the context of CodePeer analysis.
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type Unsigned_32 is mod 2 ** 32;
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for Unsigned_32'Size use 32;
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type Unsigned_64 is mod 2 ** Long_Long_Integer'Size;
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for Unsigned_64'Size use 64;
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-- See comment on Integer_64 above
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function Shift_Left
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(Value : Unsigned_8;
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Amount : Natural) return Unsigned_8;
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function Shift_Right
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(Value : Unsigned_8;
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Amount : Natural) return Unsigned_8;
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function Shift_Right_Arithmetic
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(Value : Unsigned_8;
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Amount : Natural) return Unsigned_8;
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function Rotate_Left
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(Value : Unsigned_8;
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Amount : Natural) return Unsigned_8;
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function Rotate_Right
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(Value : Unsigned_8;
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Amount : Natural) return Unsigned_8;
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function Shift_Left
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(Value : Unsigned_16;
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Amount : Natural) return Unsigned_16;
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function Shift_Right
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(Value : Unsigned_16;
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Amount : Natural) return Unsigned_16;
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function Shift_Right_Arithmetic
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(Value : Unsigned_16;
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Amount : Natural) return Unsigned_16;
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function Rotate_Left
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(Value : Unsigned_16;
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Amount : Natural) return Unsigned_16;
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function Rotate_Right
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(Value : Unsigned_16;
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Amount : Natural) return Unsigned_16;
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function Shift_Left
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(Value : Unsigned_32;
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Amount : Natural) return Unsigned_32;
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function Shift_Right
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(Value : Unsigned_32;
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Amount : Natural) return Unsigned_32;
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function Shift_Right_Arithmetic
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(Value : Unsigned_32;
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Amount : Natural) return Unsigned_32;
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function Rotate_Left
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(Value : Unsigned_32;
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Amount : Natural) return Unsigned_32;
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function Rotate_Right
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(Value : Unsigned_32;
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Amount : Natural) return Unsigned_32;
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function Shift_Left
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(Value : Unsigned_64;
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Amount : Natural) return Unsigned_64;
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function Shift_Right
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(Value : Unsigned_64;
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Amount : Natural) return Unsigned_64;
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function Shift_Right_Arithmetic
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(Value : Unsigned_64;
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Amount : Natural) return Unsigned_64;
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function Rotate_Left
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(Value : Unsigned_64;
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Amount : Natural) return Unsigned_64;
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function Rotate_Right
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(Value : Unsigned_64;
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Amount : Natural) return Unsigned_64;
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pragma Import (Intrinsic, Shift_Left);
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pragma Import (Intrinsic, Shift_Right);
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pragma Import (Intrinsic, Shift_Right_Arithmetic);
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pragma Import (Intrinsic, Rotate_Left);
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pragma Import (Intrinsic, Rotate_Right);
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-- IEEE Floating point types
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type IEEE_Float_32 is digits 6;
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for IEEE_Float_32'Size use 32;
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type IEEE_Float_64 is digits 15;
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for IEEE_Float_64'Size use 64;
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-- If there is an IEEE extended float available on the machine, we assume
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-- that it is available as Long_Long_Float.
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-- Note: it is harmless, and explicitly permitted, to include additional
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-- types in interfaces, so it is not wrong to have IEEE_Extended_Float
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-- defined even if the extended format is not available.
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type IEEE_Extended_Float is new Long_Long_Float;
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end Interfaces;
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