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Diffstat (limited to 'gcc/ada/libgnat/s-pack23.ads')
| -rw-r--r-- | gcc/ada/libgnat/s-pack23.ads | 60 |
1 files changed, 60 insertions, 0 deletions
diff --git a/gcc/ada/libgnat/s-pack23.ads b/gcc/ada/libgnat/s-pack23.ads new file mode 100644 index 00000000000..b993f54d9d5 --- /dev/null +++ b/gcc/ada/libgnat/s-pack23.ads @@ -0,0 +1,60 @@ +------------------------------------------------------------------------------ +-- -- +-- GNAT RUN-TIME COMPONENTS -- +-- -- +-- S Y S T E M . P A C K _ 2 3 -- +-- -- +-- S p e c -- +-- -- +-- Copyright (C) 1992-2017, Free Software Foundation, Inc. -- +-- -- +-- 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. -- +-- -- +------------------------------------------------------------------------------ + +-- Handling of packed arrays with Component_Size = 23 + +package System.Pack_23 is + pragma Preelaborate; + + Bits : constant := 23; + + type Bits_23 is mod 2 ** Bits; + for Bits_23'Size use Bits; + + -- In all subprograms below, Rev_SSO is set True if the array has the + -- non-default scalar storage order. + + function Get_23 + (Arr : System.Address; + N : Natural; + Rev_SSO : Boolean) return Bits_23 with Inline; + -- Arr is the address of the packed array, N is the zero-based + -- subscript. This element is extracted and returned. + + procedure Set_23 + (Arr : System.Address; + N : Natural; + E : Bits_23; + Rev_SSO : Boolean) with Inline; + -- Arr is the address of the packed array, N is the zero-based + -- subscript. This element is set to the given value. + +end System.Pack_23; |