------------------------------------------------------------------------------
-- --
--- GNU ADA RUNTIME LIBRARY (GNARL) COMPONENTS --
+-- 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) 2002-2004 Free Software Foundation, Inc. --
+-- Copyright (C) 2002-2009, 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- --
+-- 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. 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. --
+-- or FITNESS FOR A PARTICULAR PURPOSE. --
-- --
--- 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. --
+-- 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. --
-- --
------------------------------------------------------------------------------
-with System; use System;
-with System.Storage_Elements; use System.Storage_Elements;
-with Ada.Unchecked_Conversion; use Ada;
-
-package body System.Generic_Vector_Operations is
-
- -- Provide arithmetic operations on type Address (these may not be
- -- directly available if type System.Address is non-private and the
- -- operations on the type are made abstract to hide them from public
- -- users of System.
+with System; use System;
+with System.Address_Operations; use System.Address_Operations;
+with System.Storage_Elements; use System.Storage_Elements;
- function "mod" (Left, Right : Address) return Address;
- pragma Import (Intrinsic, "mod");
+with Ada.Unchecked_Conversion;
- function "+" (Left, Right : Address) return Address;
- pragma Import (Intrinsic, "+");
-
- function "-" (Left, Right : Address) return Address;
- pragma Import (Intrinsic, "-");
+package body System.Generic_Vector_Operations is
- VU : constant Address := Vectors.Vector'Size / Storage_Unit;
- EU : constant Address := Element_Array'Component_Size / Storage_Unit;
+ 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 --
YA : Address := Y;
-- Address of next element to process in R, X and Y
- Unaligned : constant Boolean := (RA or XA or YA) mod VU /= 0;
- -- False iff one or more argument addresses is not aligned
+ 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);
+ function VP is new Ada.Unchecked_Conversion (Address, Vector_Ptr);
+ function EP is new Ada.Unchecked_Conversion (Address, Element_Ptr);
- SA : constant Address := XA + ((Length + 0) / VU * VU
- and (Boolean'Pos (Unaligned) - Address'(1)));
+ 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 := XA + VU;
- YA := YA + VU;
- RA := RA + VU;
+ 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 := XA + EU;
- YA := YA + EU;
- RA := RA + EU;
+ XA := AddA (XA, EU);
+ YA := AddA (YA, EU);
+ RA := AddA (RA, EU);
end loop;
end Binary_Operation;
XA : Address := X;
-- Address of next element to process in R and X
- Unaligned : constant Boolean := (RA or XA) mod VU /= 0;
- -- False iff one or more argument addresses is not aligned
+ 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);
+ function VP is new Ada.Unchecked_Conversion (Address, Vector_Ptr);
+ function EP is new Ada.Unchecked_Conversion (Address, Element_Ptr);
- SA : constant Address := XA + ((Length + 0) / VU * VU
- and (Boolean'Pos (Unaligned) - Address'(1)));
+ 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 := XA + VU;
- RA := RA + VU;
+ XA := AddA (XA, VU);
+ RA := AddA (RA, VU);
end loop;
while XA < X + Length loop
EP (RA).all := Element_Op (EP (XA).all);
- XA := XA + EU;
- RA := RA + EU;
+ XA := AddA (XA, EU);
+ RA := AddA (RA, EU);
end loop;
end Unary_Operation;
OSDN Git Service
