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Diffstat (limited to 'gcc/ada/s-pack63.ads')
| -rw-r--r-- | gcc/ada/s-pack63.ads | 54 |
1 files changed, 54 insertions, 0 deletions
diff --git a/gcc/ada/s-pack63.ads b/gcc/ada/s-pack63.ads new file mode 100644 index 00000000000..2faa0d1ce52 --- /dev/null +++ b/gcc/ada/s-pack63.ads @@ -0,0 +1,54 @@ +------------------------------------------------------------------------------ +-- -- +-- GNAT RUNTIME COMPONENTS -- +-- -- +-- S Y S T E M . P A C K _ 6 3 -- +-- -- +-- S p e c -- +-- -- +-- $Revision: 1.2 $ -- +-- -- +-- Copyright (C) 1992-1999 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 2, 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. See the GNU General Public License -- +-- for more details. You should have received a copy of the GNU General -- +-- Public License distributed with GNAT; see file COPYING. If not, write -- +-- to the Free Software Foundation, 59 Temple Place - Suite 330, Boston, -- +-- MA 02111-6307, USA. -- +-- -- +-- As a special exception, if other files instantiate generics from this -- +-- unit, or you link this unit with other files to produce an executable, -- +-- this unit does not by itself cause the resulting executable to be -- +-- covered by the GNU General Public License. This exception does not -- +-- however invalidate any other reasons why the executable file might be -- +-- covered by the GNU Public License. -- +-- -- +-- GNAT was originally developed by the GNAT team at New York University. -- +-- It is now maintained by Ada Core Technologies Inc (http://www.gnat.com). -- +-- -- +------------------------------------------------------------------------------ + +-- Handling of packed arrays with Component_Size = 63 + +package System.Pack_63 is +pragma Preelaborate (Pack_63); + + Bits : constant := 63; + + type Bits_63 is mod 2 ** Bits; + for Bits_63'Size use Bits; + + function Get_63 (Arr : System.Address; N : Natural) return Bits_63; + -- Arr is the address of the packed array, N is the zero-based + -- subscript. This element is extracted and returned. + + procedure Set_63 (Arr : System.Address; N : Natural; E : Bits_63); + -- 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_63; |