summaryrefslogtreecommitdiff
path: root/gcc/ada/s-pack48.ads
diff options
context:
space:
mode:
Diffstat (limited to 'gcc/ada/s-pack48.ads')
-rw-r--r--gcc/ada/s-pack48.ads64
1 files changed, 64 insertions, 0 deletions
diff --git a/gcc/ada/s-pack48.ads b/gcc/ada/s-pack48.ads
new file mode 100644
index 00000000000..e4aa93502c1
--- /dev/null
+++ b/gcc/ada/s-pack48.ads
@@ -0,0 +1,64 @@
+------------------------------------------------------------------------------
+-- --
+-- GNAT RUNTIME COMPONENTS --
+-- --
+-- S Y S T E M . P A C K _ 4 8 --
+-- --
+-- 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 02111-1307, 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 = 48
+
+package System.Pack_48 is
+pragma Preelaborate (Pack_48);
+
+ Bits : constant := 48;
+
+ type Bits_48 is mod 2 ** Bits;
+ for Bits_48'Size use Bits;
+
+ function Get_48 (Arr : System.Address; N : Natural) return Bits_48;
+ -- Arr is the address of the packed array, N is the zero-based
+ -- subscript. This element is extracted and returned.
+
+ procedure Set_48 (Arr : System.Address; N : Natural; E : Bits_48);
+ -- Arr is the address of the packed array, N is the zero-based
+ -- subscript. This element is set to the given value.
+
+ function GetU_48 (Arr : System.Address; N : Natural) return Bits_48;
+ -- Arr is the address of the packed array, N is the zero-based
+ -- subscript. This element is extracted and returned. This version
+ -- is used when Arr may represent an unaligned address.
+
+ procedure SetU_48 (Arr : System.Address; N : Natural; E : Bits_48);
+ -- Arr is the address of the packed array, N is the zero-based
+ -- subscript. This element is set to the given value. This version
+ -- is used when Arr may represent an unaligned address
+
+end System.Pack_48;