Check in a pristine copy of GCC 4.8.1.

The copy of GCC that we use for Android is still not working for
mingw. Rather than finding all the differences that have crept into
our GCC, just check in a copy from
ftp://ftp.gnu.org/gnu/gcc/gcc-4.9.3/gcc-4.8.1.tar.bz2.

GCC 4.8.1 was chosen because it is what we have been using for mingw
thus far, and the emulator doesn't yet work when upgrading to 4.9.

Bug: http://b/26523949
Change-Id: Iedc0f05243d4332cc27ccd46b8a4b203c88dcaa3

1 files changed, 163 insertions, 0 deletions

diff --git a/gcc-4.8.1/gcc/ada/s-pack28.adb b/gcc-4.8.1/gcc/ada/s-pack28.adb
new file mode 100644
index 000000000..1342885ba
--- /dev/null
+++ b/gcc-4.8.1/gcc/ada/s-pack28.adb
@@ -0,0 +1,163 @@
+------------------------------------------------------------------------------
+--                                                                          --
+--                         GNAT RUN-TIME COMPONENTS                         --
+--                                                                          --
+--                       S Y S T E M . P A C K _ 2 8                        --
+--                                                                          --
+--                                 B o d y                                  --
+--                                                                          --
+--          Copyright (C) 1992-2009, 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 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.                                     --
+--                                                                          --
+-- 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.Storage_Elements;
+with System.Unsigned_Types;
+with Ada.Unchecked_Conversion;
+
+package body System.Pack_28 is
+
+   subtype Ofs is System.Storage_Elements.Storage_Offset;
+   subtype Uns is System.Unsigned_Types.Unsigned;
+   subtype N07 is System.Unsigned_Types.Unsigned range 0 .. 7;
+
+   use type System.Storage_Elements.Storage_Offset;
+   use type System.Unsigned_Types.Unsigned;
+
+   type Cluster is record
+      E0, E1, E2, E3, E4, E5, E6, E7 : Bits_28;
+   end record;
+
+   for Cluster use record
+      E0 at 0 range 0 * Bits .. 0 * Bits + Bits - 1;
+      E1 at 0 range 1 * Bits .. 1 * Bits + Bits - 1;
+      E2 at 0 range 2 * Bits .. 2 * Bits + Bits - 1;
+      E3 at 0 range 3 * Bits .. 3 * Bits + Bits - 1;
+      E4 at 0 range 4 * Bits .. 4 * Bits + Bits - 1;
+      E5 at 0 range 5 * Bits .. 5 * Bits + Bits - 1;
+      E6 at 0 range 6 * Bits .. 6 * Bits + Bits - 1;
+      E7 at 0 range 7 * Bits .. 7 * Bits + Bits - 1;
+   end record;
+
+   for Cluster'Size use Bits * 8;
+
+   for Cluster'Alignment use Integer'Min (Standard'Maximum_Alignment,
+     1 +
+     1 * Boolean'Pos (Bits mod 2 = 0) +
+     2 * Boolean'Pos (Bits mod 4 = 0));
+   --  Use maximum possible alignment, given the bit field size, since this
+   --  will result in the most efficient code possible for the field.
+
+   type Cluster_Ref is access Cluster;
+
+   function To_Ref is new
+     Ada.Unchecked_Conversion (System.Address, Cluster_Ref);
+
+   --  The following declarations are for the case where the address
+   --  passed to GetU_28 or SetU_28 is not guaranteed to be aligned.
+   --  These routines are used when the packed array is itself a
+   --  component of a packed record, and therefore may not be aligned.
+
+   type ClusterU is new Cluster;
+   for ClusterU'Alignment use 1;
+
+   type ClusterU_Ref is access ClusterU;
+
+   function To_Ref is new
+     Ada.Unchecked_Conversion (System.Address, ClusterU_Ref);
+
+   ------------
+   -- Get_28 --
+   ------------
+
+   function Get_28 (Arr : System.Address; N : Natural) return Bits_28 is
+      C : constant Cluster_Ref := To_Ref (Arr + Bits * Ofs (Uns (N) / 8));
+   begin
+      case N07 (Uns (N) mod 8) is
+         when 0 => return C.E0;
+         when 1 => return C.E1;
+         when 2 => return C.E2;
+         when 3 => return C.E3;
+         when 4 => return C.E4;
+         when 5 => return C.E5;
+         when 6 => return C.E6;
+         when 7 => return C.E7;
+      end case;
+   end Get_28;
+
+   -------------
+   -- GetU_28 --
+   -------------
+
+   function GetU_28 (Arr : System.Address; N : Natural) return Bits_28 is
+      C : constant ClusterU_Ref := To_Ref (Arr + Bits * Ofs (Uns (N) / 8));
+   begin
+      case N07 (Uns (N) mod 8) is
+         when 0 => return C.E0;
+         when 1 => return C.E1;
+         when 2 => return C.E2;
+         when 3 => return C.E3;
+         when 4 => return C.E4;
+         when 5 => return C.E5;
+         when 6 => return C.E6;
+         when 7 => return C.E7;
+      end case;
+   end GetU_28;
+
+   ------------
+   -- Set_28 --
+   ------------
+
+   procedure Set_28 (Arr : System.Address; N : Natural; E : Bits_28) is
+      C : constant Cluster_Ref := To_Ref (Arr + Bits * Ofs (Uns (N) / 8));
+   begin
+      case N07 (Uns (N) mod 8) is
+         when 0 => C.E0 := E;
+         when 1 => C.E1 := E;
+         when 2 => C.E2 := E;
+         when 3 => C.E3 := E;
+         when 4 => C.E4 := E;
+         when 5 => C.E5 := E;
+         when 6 => C.E6 := E;
+         when 7 => C.E7 := E;
+      end case;
+   end Set_28;
+
+   -------------
+   -- SetU_28 --
+   -------------
+
+   procedure SetU_28 (Arr : System.Address; N : Natural; E : Bits_28) is
+      C : constant ClusterU_Ref := To_Ref (Arr + Bits * Ofs (Uns (N) / 8));
+   begin
+      case N07 (Uns (N) mod 8) is
+         when 0 => C.E0 := E;
+         when 1 => C.E1 := E;
+         when 2 => C.E2 := E;
+         when 3 => C.E3 := E;
+         when 4 => C.E4 := E;
+         when 5 => C.E5 := E;
+         when 6 => C.E6 := E;
+         when 7 => C.E7 := E;
+      end case;
+   end SetU_28;
+
+end System.Pack_28;