obtained gcc-4.6.4.tar.bz2 from upstream website;upstream

verified gcc-4.6.4.tar.bz2.sig;
imported gcc-4.6.4 source tree from verified upstream tarball.

downloading a git-generated archive based on the 'upstream' tag
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if you have obtained the source via the command 'git clone',
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1 files changed, 125 insertions, 0 deletions

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+------------------------------------------------------------------------------
+--                                                                          --
+--                         GNAT COMPILER COMPONENTS                         --
+--                                                                          --
+--           G N A T . S E R I A L _ C O M M U N I C A T I O N S            --
+--                                                                          --
+--                                 S p e c                                  --
+--                                                                          --
+--                    Copyright (C) 2007-2009, AdaCore                      --
+--                                                                          --
+-- 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.      --
+--                                                                          --
+------------------------------------------------------------------------------
+
+--  Serial communications package, implemented on Windows and GNU/Linux
+
+with Ada.Streams;
+with Interfaces.C;
+
+package GNAT.Serial_Communications is
+
+   Serial_Error : exception;
+   --  Raised when a communication problem occurs
+
+   type Port_Name is new String;
+   --  A serial com port name
+
+   function Name (Number : Positive) return Port_Name;
+   --  Returns a possible port name for the given legacy PC architecture serial
+   --  port number (COM<number>: on Windows, ttyS<number-1> on Linux).
+   --  Note that this function does not support other kinds of serial ports
+   --  nor operating systems other than Windows and Linux. For all other
+   --  cases, an explicit port name can be passed directly to Open.
+
+   type Data_Rate is
+     (B1200, B2400, B4800, B9600, B19200, B38400, B57600, B115200);
+   --  Speed of the communication
+
+   type Data_Bits is (CS8, CS7);
+   --  Communication bits
+
+   type Stop_Bits_Number is (One, Two);
+   --  One or two stop bits
+
+   type Parity_Check is (None, Even, Odd);
+   --  Either no parity check or an even or odd parity
+
+   type Serial_Port is new Ada.Streams.Root_Stream_Type with private;
+
+   procedure Open
+     (Port : out Serial_Port;
+      Name : Port_Name);
+   --  Open the given port name. Raises Serial_Error if the port cannot be
+   --  opened.
+
+   procedure Set
+     (Port      : Serial_Port;
+      Rate      : Data_Rate        := B9600;
+      Bits      : Data_Bits        := CS8;
+      Stop_Bits : Stop_Bits_Number := One;
+      Parity    : Parity_Check     := None;
+      Block     : Boolean          := True;
+      Timeout   : Duration         := 10.0);
+   --  The communication port settings. If Block is set then a read call
+   --  will wait for the whole buffer to be filed. If Block is not set then
+   --  the given Timeout (in seconds) is used. Note that the timeout precision
+   --  may be limited on some implementation (e.g. on GNU/Linux the maximum
+   --  precision is a tenth of seconds).
+
+   overriding procedure Read
+     (Port   : in out Serial_Port;
+      Buffer : out Ada.Streams.Stream_Element_Array;
+      Last   : out Ada.Streams.Stream_Element_Offset);
+   --  Read a set of bytes, put result into Buffer and set Last accordingly.
+   --  Last is set to Buffer'First - 1 if no byte has been read, unless
+   --  Buffer'First = Stream_Element_Offset'First, in which case the exception
+   --  Constraint_Error is raised instead.
+
+   overriding procedure Write
+     (Port   : in out Serial_Port;
+      Buffer : Ada.Streams.Stream_Element_Array);
+   --  Write buffer into the port
+
+   procedure Close (Port : in out Serial_Port);
+   --  Close port
+
+private
+
+   type Port_Data;
+   type Port_Data_Access is access Port_Data;
+
+   type Serial_Port is new Ada.Streams.Root_Stream_Type with record
+      H : Port_Data_Access;
+   end record;
+
+   Data_Rate_Value : constant array (Data_Rate) of Interfaces.C.unsigned :=
+                       (B1200   =>   1_200,
+                        B2400   =>   2_400,
+                        B4800   =>   4_800,
+                        B9600   =>   9_600,
+                        B19200  =>  19_200,
+                        B38400  =>  38_400,
+                        B57600  =>  57_600,
+                        B115200 => 115_200);
+
+end GNAT.Serial_Communications;