-- --
-- S p e c --
-- --
--- Copyright (C) 2001-2002 Free Software Foundation, Inc. --
+-- Copyright (C) 2001-2009 Free Software Foundation, Inc. --
-- --
-- This specification is derived from the Ada Reference Manual for use with --
-- GNAT. The copyright notice above, and the license provisions that follow --
-- --
-- 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. --
-- --
------------------------------------------------------------------------------
--- This package provides general block copy mechanisms analgous to those
+-- This package provides general block copy mechanisms analogous to those
-- provided by the C routines memcpy and memmove allowing for copies with
--- and without possible overflow.
+-- and without possible overlap of the operands.
-package System.Memory_Copy is
-pragma Preelaborate;
+-- The idea is to allow a configurable run-time to provide this capability
+-- for use by the compiler without dragging in C-run time routines.
+
+with System.CRTL;
+-- The above with is contrary to the intent ???
- type size_t is mod 2 ** Standard'Address_Size;
- -- Note: the reason we redefine this here instead of using the
- -- definition in Interfaces.C is that we do not want to drag in
- -- all of Interfaces.C just because System.Memory_Copy is used.
+package System.Memory_Copy is
+ pragma Preelaborate;
- procedure memcpy (S1 : Address; S2 : Address; N : size_t);
+ procedure memcpy (S1 : Address; S2 : Address; N : System.CRTL.size_t)
+ renames System.CRTL.memcpy;
-- Copies N storage units from area starting at S2 to area starting
-- at S1 without any check for buffer overflow. The memory areas
-- must not overlap, or the result of this call is undefined.
- procedure memmove (S1 : Address; S2 : Address; N : size_t);
+ procedure memmove (S1 : Address; S2 : Address; N : System.CRTL.size_t)
+ renames System.CRTL.memmove;
-- Copies N storage units from area starting at S2 to area starting
-- at S1 without any check for buffer overflow. The difference between
-- this memmove and memcpy is that with memmove, the storage areas may
-- is as if S2 is first moved to a temporary area, and then this area
-- is copied to S1 in a separate step).
-private
-
-- In the standard library, these are just interfaced to the C routines.
-- But in the HI-E (high integrity version) they may be reprogrammed to
-- meet certification requirements (and marked High_Integrity).
-- available, and the HI-E compiler will as a result generate implicit
-- loops (which will violate the restriction No_Implicit_Loops).
- pragma Import (C, memcpy, "memcpy");
- pragma Import (C, memmove, "memmove");
-
end System.Memory_Copy;
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