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Diffstat (limited to 'src/lib/gnat/interfac.ads')
| -rw-r--r-- | src/lib/gnat/interfac.ads | 161 |
1 files changed, 161 insertions, 0 deletions
diff --git a/src/lib/gnat/interfac.ads b/src/lib/gnat/interfac.ads new file mode 100644 index 000000000000..e7e196c59434 --- /dev/null +++ b/src/lib/gnat/interfac.ads @@ -0,0 +1,161 @@ +------------------------------------------------------------------------------ +-- -- +-- GNAT COMPILER COMPONENTS -- +-- -- +-- I N T E R F A C E S -- +-- -- +-- S p e c -- +-- -- +-- Copyright (C) 2002-2014, Free Software Foundation, Inc. -- +-- -- +-- This specification is derived from the Ada Reference Manual for use with -- +-- GNAT. The copyright notice above, and the license provisions that follow -- +-- apply solely to the implementation dependent sections of this file. -- +-- -- +-- 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 -- +-- <http://www.gnu.org/licenses/>. -- +-- -- +-- GNAT was originally developed by the GNAT team at New York University. -- +-- Extensive contributions were provided by Ada Core Technologies Inc. -- +-- -- +------------------------------------------------------------------------------ + +pragma Compiler_Unit_Warning; + +package Interfaces is + pragma Pure; + + -- All identifiers in this unit are implementation defined + + pragma Implementation_Defined; + + type Integer_8 is range -2 ** 7 .. 2 ** 7 - 1; + for Integer_8'Size use 8; + + type Integer_16 is range -2 ** 15 .. 2 ** 15 - 1; + for Integer_16'Size use 16; + + type Integer_32 is range -2 ** 31 .. 2 ** 31 - 1; + for Integer_32'Size use 32; + + type Integer_64 is new Long_Long_Integer; + for Integer_64'Size use 64; + -- Note: we use Long_Long_Integer'First instead of -2 ** 63 to allow this + -- unit to compile when using custom target configuration files where the + -- maximum integer is 32 bits. This is useful for static analysis tools + -- such as SPARK or CodePeer. In the normal case Long_Long_Integer is + -- always 64-bits so we get the desired 64-bit type. + + type Unsigned_8 is mod 2 ** 8; + for Unsigned_8'Size use 8; + + type Unsigned_16 is mod 2 ** 16; + for Unsigned_16'Size use 16; + + type Unsigned_32 is mod 2 ** 32; + for Unsigned_32'Size use 32; + + type Unsigned_64 is mod 2 ** Long_Long_Integer'Size; + for Unsigned_64'Size use 64; + -- See comment on Integer_64 above + + function Shift_Left + (Value : Unsigned_8; + Amount : Natural) return Unsigned_8; + + function Shift_Right + (Value : Unsigned_8; + Amount : Natural) return Unsigned_8; + + function Shift_Right_Arithmetic + (Value : Unsigned_8; + Amount : Natural) return Unsigned_8; + + function Rotate_Left + (Value : Unsigned_8; + Amount : Natural) return Unsigned_8; + + function Rotate_Right + (Value : Unsigned_8; + Amount : Natural) return Unsigned_8; + + function Shift_Left + (Value : Unsigned_16; + Amount : Natural) return Unsigned_16; + + function Shift_Right + (Value : Unsigned_16; + Amount : Natural) return Unsigned_16; + + function Shift_Right_Arithmetic + (Value : Unsigned_16; + Amount : Natural) return Unsigned_16; + + function Rotate_Left + (Value : Unsigned_16; + Amount : Natural) return Unsigned_16; + + function Rotate_Right + (Value : Unsigned_16; + Amount : Natural) return Unsigned_16; + + function Shift_Left + (Value : Unsigned_32; + Amount : Natural) return Unsigned_32; + + function Shift_Right + (Value : Unsigned_32; + Amount : Natural) return Unsigned_32; + + function Shift_Right_Arithmetic + (Value : Unsigned_32; + Amount : Natural) return Unsigned_32; + + function Rotate_Left + (Value : Unsigned_32; + Amount : Natural) return Unsigned_32; + + function Rotate_Right + (Value : Unsigned_32; + Amount : Natural) return Unsigned_32; + + function Shift_Left + (Value : Unsigned_64; + Amount : Natural) return Unsigned_64; + + function Shift_Right + (Value : Unsigned_64; + Amount : Natural) return Unsigned_64; + + function Shift_Right_Arithmetic + (Value : Unsigned_64; + Amount : Natural) return Unsigned_64; + + function Rotate_Left + (Value : Unsigned_64; + Amount : Natural) return Unsigned_64; + + function Rotate_Right + (Value : Unsigned_64; + Amount : Natural) return Unsigned_64; + + pragma Import (Intrinsic, Shift_Left); + pragma Import (Intrinsic, Shift_Right); + pragma Import (Intrinsic, Shift_Right_Arithmetic); + pragma Import (Intrinsic, Rotate_Left); + pragma Import (Intrinsic, Rotate_Right); + +end Interfaces; |