------------------------------------------------------------------------------ -- -- -- GNAT RUN-TIME LIBRARY (GNARL) COMPONENTS -- -- -- -- S Y S T E M . G E N E R I C _ V E C T O R _ O P E R A T I O N S -- -- -- -- B o d y -- -- -- -- Copyright (C) 2002-2005 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, 51 Franklin Street, Fifth Floor, -- -- Boston, MA 02110-1301, 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. -- -- Extensive contributions were provided by Ada Core Technologies Inc. -- -- -- ------------------------------------------------------------------------------ with System; use System; with System.Address_Operations; use System.Address_Operations; with System.Storage_Elements; use System.Storage_Elements; with Unchecked_Conversion; package body System.Generic_Vector_Operations is IU : constant Integer := Integer (Storage_Unit); VU : constant Address := Address (Vectors.Vector'Size / IU); EU : constant Address := Address (Element_Array'Component_Size / IU); ---------------------- -- Binary_Operation -- ---------------------- procedure Binary_Operation (R, X, Y : System.Address; Length : System.Storage_Elements.Storage_Count) is RA : Address := R; XA : Address := X; YA : Address := Y; -- Address of next element to process in R, X and Y VI : constant Integer_Address := To_Integer (VU); Unaligned : constant Integer_Address := Boolean'Pos (ModA (OrA (OrA (RA, XA), YA), VU) /= 0) - 1; -- Zero iff one or more argument addresses is not aligned, else all 1's type Vector_Ptr is access all Vectors.Vector; type Element_Ptr is access all Element; function VP is new Unchecked_Conversion (Address, Vector_Ptr); function EP is new Unchecked_Conversion (Address, Element_Ptr); SA : constant Address := AddA (XA, To_Address ((Integer_Address (Length) / VI * VI) and Unaligned)); -- First address of argument X to start serial processing begin while XA < SA loop VP (RA).all := Vector_Op (VP (XA).all, VP (YA).all); XA := AddA (XA, VU); YA := AddA (YA, VU); RA := AddA (RA, VU); end loop; while XA < X + Length loop EP (RA).all := Element_Op (EP (XA).all, EP (YA).all); XA := AddA (XA, EU); YA := AddA (YA, EU); RA := AddA (RA, EU); end loop; end Binary_Operation; ---------------------- -- Unary_Operation -- ---------------------- procedure Unary_Operation (R, X : System.Address; Length : System.Storage_Elements.Storage_Count) is RA : Address := R; XA : Address := X; -- Address of next element to process in R and X VI : constant Integer_Address := To_Integer (VU); Unaligned : constant Integer_Address := Boolean'Pos (ModA (OrA (RA, XA), VU) /= 0) - 1; -- Zero iff one or more argument addresses is not aligned, else all 1's type Vector_Ptr is access all Vectors.Vector; type Element_Ptr is access all Element; function VP is new Unchecked_Conversion (Address, Vector_Ptr); function EP is new Unchecked_Conversion (Address, Element_Ptr); SA : constant Address := AddA (XA, To_Address ((Integer_Address (Length) / VI * VI) and Unaligned)); -- First address of argument X to start serial processing begin while XA < SA loop VP (RA).all := Vector_Op (VP (XA).all); XA := AddA (XA, VU); RA := AddA (RA, VU); end loop; while XA < X + Length loop EP (RA).all := Element_Op (EP (XA).all); XA := AddA (XA, EU); RA := AddA (RA, EU); end loop; end Unary_Operation; end System.Generic_Vector_Operations;