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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
should provide you with a source tree that is binary identical
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if you have obtained the source via the command 'git clone',
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1 files changed, 273 insertions, 0 deletions

diff --git a/gcc/ada/g-sercom-mingw.adb b/gcc/ada/g-sercom-mingw.adb
new file mode 100644
index 000000000..cc6123bbc
--- /dev/null
+++ b/gcc/ada/g-sercom-mingw.adb
@@ -0,0 +1,273 @@
+------------------------------------------------------------------------------
+--                                                                          --
+--                         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            --
+--                                                                          --
+--                                 B o d y                                  --
+--                                                                          --
+--                    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.      --
+--                                                                          --
+------------------------------------------------------------------------------
+
+--  This is the Windows implementation of this package
+
+with Ada.Unchecked_Deallocation; use Ada;
+with Ada.Streams;                use Ada.Streams;
+
+with System;               use System;
+with System.Communication; use System.Communication;
+with System.CRTL;          use System.CRTL;
+with System.Win32;         use System.Win32;
+with System.Win32.Ext;     use System.Win32.Ext;
+
+package body GNAT.Serial_Communications is
+
+   --  Common types
+
+   type Port_Data is new HANDLE;
+
+   C_Bits      : constant array (Data_Bits) of Interfaces.C.unsigned := (8, 7);
+   C_Parity    : constant array (Parity_Check) of Interfaces.C.unsigned :=
+                   (None => NOPARITY, Odd => ODDPARITY, Even => EVENPARITY);
+   C_Stop_Bits : constant array (Stop_Bits_Number) of Interfaces.C.unsigned :=
+                   (One => ONESTOPBIT, Two => TWOSTOPBITS);
+
+   -----------
+   -- Files --
+   -----------
+
+   procedure Raise_Error (Message : String; Error : DWORD := GetLastError);
+   pragma No_Return (Raise_Error);
+
+   -----------
+   -- Close --
+   -----------
+
+   procedure Close (Port : in out Serial_Port) is
+      procedure Unchecked_Free is
+        new Unchecked_Deallocation (Port_Data, Port_Data_Access);
+
+      Success : BOOL;
+
+   begin
+      if Port.H /= null then
+         Success := CloseHandle (HANDLE (Port.H.all));
+         Unchecked_Free (Port.H);
+
+         if Success = Win32.FALSE then
+            Raise_Error ("error closing the port");
+         end if;
+      end if;
+   end Close;
+
+   ----------
+   -- Name --
+   ----------
+
+   function Name (Number : Positive) return Port_Name is
+      N_Img : constant String := Positive'Image (Number);
+   begin
+      return Port_Name ("COM" & N_Img (N_Img'First + 1 .. N_Img'Last) & ':');
+   end Name;
+
+   ----------
+   -- Open --
+   ----------
+
+   procedure Open
+     (Port : out Serial_Port;
+      Name : Port_Name)
+   is
+      C_Name  : constant String := String (Name) & ASCII.NUL;
+      Success : BOOL;
+      pragma Unreferenced (Success);
+
+   begin
+      if Port.H = null then
+         Port.H := new Port_Data;
+      else
+         Success := CloseHandle (HANDLE (Port.H.all));
+      end if;
+
+      Port.H.all := CreateFileA
+        (lpFileName            => C_Name (C_Name'First)'Address,
+         dwDesiredAccess       => GENERIC_READ or GENERIC_WRITE,
+         dwShareMode           => 0,
+         lpSecurityAttributes  => null,
+         dwCreationDisposition => OPEN_EXISTING,
+         dwFlagsAndAttributes  => 0,
+         hTemplateFile         => 0);
+
+      if Port.H.all = 0 then
+         Raise_Error ("cannot open com port");
+      end if;
+   end Open;
+
+   -----------------
+   -- Raise_Error --
+   -----------------
+
+   procedure Raise_Error (Message : String; Error : DWORD := GetLastError) is
+   begin
+      raise Serial_Error with Message & " (" & DWORD'Image (Error) & ')';
+   end Raise_Error;
+
+   ----------
+   -- Read --
+   ----------
+
+   overriding procedure Read
+     (Port   : in out Serial_Port;
+      Buffer : out Stream_Element_Array;
+      Last   : out Stream_Element_Offset)
+   is
+      Success   : BOOL;
+      Read_Last : aliased DWORD;
+
+   begin
+      if Port.H = null then
+         Raise_Error ("read: port not opened", 0);
+      end if;
+
+      Success :=
+        ReadFile
+          (hFile                => HANDLE (Port.H.all),
+           lpBuffer             => Buffer (Buffer'First)'Address,
+           nNumberOfBytesToRead => DWORD (Buffer'Length),
+           lpNumberOfBytesRead  => Read_Last'Access,
+           lpOverlapped         => null);
+
+      if Success = Win32.FALSE then
+         Raise_Error ("read error");
+      end if;
+
+      Last := Last_Index (Buffer'First, size_t (Read_Last));
+   end Read;
+
+   ---------
+   -- Set --
+   ---------
+
+   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)
+   is
+      Success      : BOOL;
+      Com_Time_Out : aliased COMMTIMEOUTS;
+      Com_Settings : aliased DCB;
+
+   begin
+      if Port.H = null then
+         Raise_Error ("set: port not opened", 0);
+      end if;
+
+      Success := GetCommState (HANDLE (Port.H.all), Com_Settings'Access);
+
+      if Success = Win32.FALSE then
+         Success := CloseHandle (HANDLE (Port.H.all));
+         Port.H.all := 0;
+         Raise_Error ("set: cannot get comm state");
+      end if;
+
+      Com_Settings.BaudRate        := DWORD (Data_Rate_Value (Rate));
+      Com_Settings.fParity         := 1;
+      Com_Settings.fBinary         := Bits1 (System.Win32.TRUE);
+      Com_Settings.fOutxCtsFlow    := 0;
+      Com_Settings.fOutxDsrFlow    := 0;
+      Com_Settings.fDsrSensitivity := 0;
+      Com_Settings.fDtrControl     := DTR_CONTROL_DISABLE;
+      Com_Settings.fOutX           := 0;
+      Com_Settings.fInX            := 0;
+      Com_Settings.fRtsControl     := RTS_CONTROL_DISABLE;
+      Com_Settings.fAbortOnError   := 0;
+      Com_Settings.ByteSize        := BYTE (C_Bits (Bits));
+      Com_Settings.Parity          := BYTE (C_Parity (Parity));
+      Com_Settings.StopBits        := BYTE (C_Stop_Bits (Stop_Bits));
+
+      Success := SetCommState (HANDLE (Port.H.all), Com_Settings'Access);
+
+      if Success = Win32.FALSE then
+         Success := CloseHandle (HANDLE (Port.H.all));
+         Port.H.all := 0;
+         Raise_Error ("cannot set comm state");
+      end if;
+
+      --  Set the timeout status
+
+      if Block then
+         Com_Time_Out := (others => 0);
+      else
+         Com_Time_Out :=
+           (ReadTotalTimeoutConstant => DWORD (1000 * Timeout),
+            others                   => 0);
+      end if;
+
+      Success :=
+        SetCommTimeouts
+          (hFile          => HANDLE (Port.H.all),
+           lpCommTimeouts => Com_Time_Out'Access);
+
+      if Success = Win32.FALSE then
+         Raise_Error ("cannot set the timeout");
+      end if;
+   end Set;
+
+   -----------
+   -- Write --
+   -----------
+
+   overriding procedure Write
+     (Port   : in out Serial_Port;
+      Buffer : Stream_Element_Array)
+   is
+      Success   : BOOL;
+      Temp_Last : aliased DWORD;
+
+   begin
+      if Port.H = null then
+         Raise_Error ("write: port not opened", 0);
+      end if;
+
+      Success :=
+        WriteFile
+          (hFile                  => HANDLE (Port.H.all),
+           lpBuffer               => Buffer'Address,
+           nNumberOfBytesToWrite  => DWORD (Buffer'Length),
+           lpNumberOfBytesWritten => Temp_Last'Access,
+           lpOverlapped           => null);
+
+      if Success = Win32.FALSE
+        or else Stream_Element_Offset (Temp_Last) /= Buffer'Length
+      then
+         Raise_Error ("failed to write data");
+      end if;
+   end Write;
+
+end GNAT.Serial_Communications;