--- /dev/null
+------------------------------------------------------------------------------
+-- --
+-- GNAT COMPILER COMPONENTS --
+-- --
+-- I N T E R F A C E S --
+-- --
+-- S p e c --
+-- --
+-- Copyright (C) 2002-2020, 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. --
+-- --
+------------------------------------------------------------------------------
+
+-- This is the runtime version of this unit (not used during GNAT build)
+
+package Interfaces is
+ pragma No_Elaboration_Code_All;
+ 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_24 is mod 2 ** 24;
+ for Unsigned_24'Size use 24;
+ -- Declare this type for compatibility with legacy Ada compilers.
+ -- This is particularly useful in the context of CodePeer analysis.
+
+ 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
+ with Import, Convention => Intrinsic, Static;
+
+ function Shift_Right
+ (Value : Unsigned_8;
+ Amount : Natural) return Unsigned_8
+ with Import, Convention => Intrinsic, Static;
+
+ function Shift_Right_Arithmetic
+ (Value : Unsigned_8;
+ Amount : Natural) return Unsigned_8
+ with Import, Convention => Intrinsic, Static;
+
+ function Rotate_Left
+ (Value : Unsigned_8;
+ Amount : Natural) return Unsigned_8
+ with Import, Convention => Intrinsic, Static;
+
+ function Rotate_Right
+ (Value : Unsigned_8;
+ Amount : Natural) return Unsigned_8
+ with Import, Convention => Intrinsic, Static;
+
+ function Shift_Left
+ (Value : Unsigned_16;
+ Amount : Natural) return Unsigned_16
+ with Import, Convention => Intrinsic, Static;
+
+ function Shift_Right
+ (Value : Unsigned_16;
+ Amount : Natural) return Unsigned_16
+ with Import, Convention => Intrinsic, Static;
+
+ function Shift_Right_Arithmetic
+ (Value : Unsigned_16;
+ Amount : Natural) return Unsigned_16
+ with Import, Convention => Intrinsic, Static;
+
+ function Rotate_Left
+ (Value : Unsigned_16;
+ Amount : Natural) return Unsigned_16
+ with Import, Convention => Intrinsic, Static;
+
+ function Rotate_Right
+ (Value : Unsigned_16;
+ Amount : Natural) return Unsigned_16
+ with Import, Convention => Intrinsic, Static;
+
+ function Shift_Left
+ (Value : Unsigned_32;
+ Amount : Natural) return Unsigned_32
+ with Import, Convention => Intrinsic, Static;
+
+ function Shift_Right
+ (Value : Unsigned_32;
+ Amount : Natural) return Unsigned_32
+ with Import, Convention => Intrinsic, Static;
+
+ function Shift_Right_Arithmetic
+ (Value : Unsigned_32;
+ Amount : Natural) return Unsigned_32
+ with Import, Convention => Intrinsic, Static;
+
+ function Rotate_Left
+ (Value : Unsigned_32;
+ Amount : Natural) return Unsigned_32
+ with Import, Convention => Intrinsic, Static;
+
+ function Rotate_Right
+ (Value : Unsigned_32;
+ Amount : Natural) return Unsigned_32
+ with Import, Convention => Intrinsic, Static;
+
+ function Shift_Left
+ (Value : Unsigned_64;
+ Amount : Natural) return Unsigned_64
+ with Import, Convention => Intrinsic, Static;
+
+ function Shift_Right
+ (Value : Unsigned_64;
+ Amount : Natural) return Unsigned_64
+ with Import, Convention => Intrinsic, Static;
+
+ function Shift_Right_Arithmetic
+ (Value : Unsigned_64;
+ Amount : Natural) return Unsigned_64
+ with Import, Convention => Intrinsic, Static;
+
+ function Rotate_Left
+ (Value : Unsigned_64;
+ Amount : Natural) return Unsigned_64
+ with Import, Convention => Intrinsic, Static;
+
+ function Rotate_Right
+ (Value : Unsigned_64;
+ Amount : Natural) return Unsigned_64
+ with Import, Convention => Intrinsic, Static;
+
+ -- IEEE Floating point types
+
+ type IEEE_Float_32 is digits 6;
+ for IEEE_Float_32'Size use 32;
+
+ type IEEE_Float_64 is digits 15;
+ for IEEE_Float_64'Size use 64;
+
+ -- If there is an IEEE extended float available on the machine, we assume
+ -- that it is available as Long_Long_Float.
+
+ -- Note: it is harmless, and explicitly permitted, to include additional
+ -- types in interfaces, so it is not wrong to have IEEE_Extended_Float
+ -- defined even if the extended format is not available.
+
+ type IEEE_Extended_Float is new Long_Long_Float;
+
+end Interfaces;
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