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) 2002-2018, 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 No_Elaboration_Code_All; 40 pragma Pure; 41 42 -- All identifiers in this unit are implementation defined 43 44 pragma Implementation_Defined; 45 46 type Integer_8 is range -2 ** 7 .. 2 ** 7 - 1; 47 for Integer_8'Size use 8; 48 49 type Integer_16 is range -2 ** 15 .. 2 ** 15 - 1; 50 for Integer_16'Size use 16; 51 52 type Integer_32 is range -2 ** 31 .. 2 ** 31 - 1; 53 for Integer_32'Size use 32; 54 55 type Integer_64 is new Long_Long_Integer; 56 for Integer_64'Size use 64; 57 -- Note: we use Long_Long_Integer'First instead of -2 ** 63 to allow this 58 -- unit to compile when using custom target configuration files where the 59 -- maximum integer is 32 bits. This is useful for static analysis tools 60 -- such as SPARK or CodePeer. In the normal case Long_Long_Integer is 61 -- always 64-bits so we get the desired 64-bit type. 62 63 type Unsigned_8 is mod 2 ** 8; 64 for Unsigned_8'Size use 8; 65 66 type Unsigned_16 is mod 2 ** 16; 67 for Unsigned_16'Size use 16; 68 69 type Unsigned_24 is mod 2 ** 24; 70 for Unsigned_24'Size use 24; 71 -- Declare this type for compatibility with legacy Ada compilers. 72 -- This is particularly useful in the context of CodePeer analysis. 73 74 type Unsigned_32 is mod 2 ** 32; 75 for Unsigned_32'Size use 32; 76 77 type Unsigned_64 is mod 2 ** Long_Long_Integer'Size; 78 for Unsigned_64'Size use 64; 79 -- See comment on Integer_64 above 80 81 function Shift_Left 82 (Value : Unsigned_8; 83 Amount : Natural) return Unsigned_8; 84 85 function Shift_Right 86 (Value : Unsigned_8; 87 Amount : Natural) return Unsigned_8; 88 89 function Shift_Right_Arithmetic 90 (Value : Unsigned_8; 91 Amount : Natural) return Unsigned_8; 92 93 function Rotate_Left 94 (Value : Unsigned_8; 95 Amount : Natural) return Unsigned_8; 96 97 function Rotate_Right 98 (Value : Unsigned_8; 99 Amount : Natural) return Unsigned_8; 100 101 function Shift_Left 102 (Value : Unsigned_16; 103 Amount : Natural) return Unsigned_16; 104 105 function Shift_Right 106 (Value : Unsigned_16; 107 Amount : Natural) return Unsigned_16; 108 109 function Shift_Right_Arithmetic 110 (Value : Unsigned_16; 111 Amount : Natural) return Unsigned_16; 112 113 function Rotate_Left 114 (Value : Unsigned_16; 115 Amount : Natural) return Unsigned_16; 116 117 function Rotate_Right 118 (Value : Unsigned_16; 119 Amount : Natural) return Unsigned_16; 120 121 function Shift_Left 122 (Value : Unsigned_32; 123 Amount : Natural) return Unsigned_32; 124 125 function Shift_Right 126 (Value : Unsigned_32; 127 Amount : Natural) return Unsigned_32; 128 129 function Shift_Right_Arithmetic 130 (Value : Unsigned_32; 131 Amount : Natural) return Unsigned_32; 132 133 function Rotate_Left 134 (Value : Unsigned_32; 135 Amount : Natural) return Unsigned_32; 136 137 function Rotate_Right 138 (Value : Unsigned_32; 139 Amount : Natural) return Unsigned_32; 140 141 function Shift_Left 142 (Value : Unsigned_64; 143 Amount : Natural) return Unsigned_64; 144 145 function Shift_Right 146 (Value : Unsigned_64; 147 Amount : Natural) return Unsigned_64; 148 149 function Shift_Right_Arithmetic 150 (Value : Unsigned_64; 151 Amount : Natural) return Unsigned_64; 152 153 function Rotate_Left 154 (Value : Unsigned_64; 155 Amount : Natural) return Unsigned_64; 156 157 function Rotate_Right 158 (Value : Unsigned_64; 159 Amount : Natural) return Unsigned_64; 160 161 pragma Import (Intrinsic, Shift_Left); 162 pragma Import (Intrinsic, Shift_Right); 163 pragma Import (Intrinsic, Shift_Right_Arithmetic); 164 pragma Import (Intrinsic, Rotate_Left); 165 pragma Import (Intrinsic, Rotate_Right); 166 167 -- IEEE Floating point types 168 169 type IEEE_Float_32 is digits 6; 170 for IEEE_Float_32'Size use 32; 171 172 type IEEE_Float_64 is digits 15; 173 for IEEE_Float_64'Size use 64; 174 175 -- If there is an IEEE extended float available on the machine, we assume 176 -- that it is available as Long_Long_Float. 177 178 -- Note: it is harmless, and explicitly permitted, to include additional 179 -- types in interfaces, so it is not wrong to have IEEE_Extended_Float 180 -- defined even if the extended format is not available. 181 182 type IEEE_Extended_Float is new Long_Long_Float; 183 184end Interfaces; 185