1------------------------------------------------------------------------------ 2-- -- 3-- GNAT COMPILER COMPONENTS -- 4-- -- 5-- I N T E R F A C E S -- 6-- -- 7-- S p e c -- 8-- -- 9-- Copyright (C) 2002-2014, Free Software Foundation, Inc. -- 10-- -- 11-- This specification is derived from the Ada Reference Manual for use with -- 12-- GNAT. The copyright notice above, and the license provisions that follow -- 13-- apply solely to the implementation dependent sections of this file. -- 14-- -- 15-- GNAT is free software; you can redistribute it and/or modify it under -- 16-- terms of the GNU General Public License as published by the Free Soft- -- 17-- ware Foundation; either version 3, or (at your option) any later ver- -- 18-- sion. GNAT is distributed in the hope that it will be useful, but WITH- -- 19-- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY -- 20-- or FITNESS FOR A PARTICULAR PURPOSE. -- 21-- -- 22-- As a special exception under Section 7 of GPL version 3, you are granted -- 23-- additional permissions described in the GCC Runtime Library Exception, -- 24-- version 3.1, as published by the Free Software Foundation. -- 25-- -- 26-- You should have received a copy of the GNU General Public License and -- 27-- a copy of the GCC Runtime Library Exception along with this program; -- 28-- see the files COPYING3 and COPYING.RUNTIME respectively. If not, see -- 29-- <http://www.gnu.org/licenses/>. -- 30-- -- 31-- GNAT was originally developed by the GNAT team at New York University. -- 32-- Extensive contributions were provided by Ada Core Technologies Inc. -- 33-- -- 34------------------------------------------------------------------------------ 35 36pragma Compiler_Unit_Warning; 37 38package Interfaces is 39 pragma Pure; 40 41 -- All identifiers in this unit are implementation defined 42 43 pragma Implementation_Defined; 44 45 type Integer_8 is range -2 ** 7 .. 2 ** 7 - 1; 46 for Integer_8'Size use 8; 47 48 type Integer_16 is range -2 ** 15 .. 2 ** 15 - 1; 49 for Integer_16'Size use 16; 50 51 type Integer_32 is range -2 ** 31 .. 2 ** 31 - 1; 52 for Integer_32'Size use 32; 53 54 type Integer_64 is new Long_Long_Integer; 55 for Integer_64'Size use 64; 56 -- Note: we use Long_Long_Integer'First instead of -2 ** 63 to allow this 57 -- unit to compile when using custom target configuration files where the 58 -- maximum integer is 32 bits. This is useful for static analysis tools 59 -- such as SPARK or CodePeer. In the normal case Long_Long_Integer is 60 -- always 64-bits so we get the desired 64-bit type. 61 62 type Unsigned_8 is mod 2 ** 8; 63 for Unsigned_8'Size use 8; 64 65 type Unsigned_16 is mod 2 ** 16; 66 for Unsigned_16'Size use 16; 67 68 type Unsigned_32 is mod 2 ** 32; 69 for Unsigned_32'Size use 32; 70 71 type Unsigned_64 is mod 2 ** Long_Long_Integer'Size; 72 for Unsigned_64'Size use 64; 73 -- See comment on Integer_64 above 74 75 function Shift_Left 76 (Value : Unsigned_8; 77 Amount : Natural) return Unsigned_8; 78 79 function Shift_Right 80 (Value : Unsigned_8; 81 Amount : Natural) return Unsigned_8; 82 83 function Shift_Right_Arithmetic 84 (Value : Unsigned_8; 85 Amount : Natural) return Unsigned_8; 86 87 function Rotate_Left 88 (Value : Unsigned_8; 89 Amount : Natural) return Unsigned_8; 90 91 function Rotate_Right 92 (Value : Unsigned_8; 93 Amount : Natural) return Unsigned_8; 94 95 function Shift_Left 96 (Value : Unsigned_16; 97 Amount : Natural) return Unsigned_16; 98 99 function Shift_Right 100 (Value : Unsigned_16; 101 Amount : Natural) return Unsigned_16; 102 103 function Shift_Right_Arithmetic 104 (Value : Unsigned_16; 105 Amount : Natural) return Unsigned_16; 106 107 function Rotate_Left 108 (Value : Unsigned_16; 109 Amount : Natural) return Unsigned_16; 110 111 function Rotate_Right 112 (Value : Unsigned_16; 113 Amount : Natural) return Unsigned_16; 114 115 function Shift_Left 116 (Value : Unsigned_32; 117 Amount : Natural) return Unsigned_32; 118 119 function Shift_Right 120 (Value : Unsigned_32; 121 Amount : Natural) return Unsigned_32; 122 123 function Shift_Right_Arithmetic 124 (Value : Unsigned_32; 125 Amount : Natural) return Unsigned_32; 126 127 function Rotate_Left 128 (Value : Unsigned_32; 129 Amount : Natural) return Unsigned_32; 130 131 function Rotate_Right 132 (Value : Unsigned_32; 133 Amount : Natural) return Unsigned_32; 134 135 function Shift_Left 136 (Value : Unsigned_64; 137 Amount : Natural) return Unsigned_64; 138 139 function Shift_Right 140 (Value : Unsigned_64; 141 Amount : Natural) return Unsigned_64; 142 143 function Shift_Right_Arithmetic 144 (Value : Unsigned_64; 145 Amount : Natural) return Unsigned_64; 146 147 function Rotate_Left 148 (Value : Unsigned_64; 149 Amount : Natural) return Unsigned_64; 150 151 function Rotate_Right 152 (Value : Unsigned_64; 153 Amount : Natural) return Unsigned_64; 154 155 pragma Import (Intrinsic, Shift_Left); 156 pragma Import (Intrinsic, Shift_Right); 157 pragma Import (Intrinsic, Shift_Right_Arithmetic); 158 pragma Import (Intrinsic, Rotate_Left); 159 pragma Import (Intrinsic, Rotate_Right); 160 161 -- IEEE Floating point types 162 163 type IEEE_Float_32 is digits 6; 164 for IEEE_Float_32'Size use 32; 165 166 type IEEE_Float_64 is digits 15; 167 for IEEE_Float_64'Size use 64; 168 169 -- If there is an IEEE extended float available on the machine, we assume 170 -- that it is available as Long_Long_Float. 171 172 -- Note: it is harmless, and explicitly permitted, to include additional 173 -- types in interfaces, so it is not wrong to have IEEE_Extended_Float 174 -- defined even if the extended format is not available. 175 176 type IEEE_Extended_Float is new Long_Long_Float; 177 178end Interfaces; 179