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
should provide you with a source tree that is binary identical
to the one extracted from the above tarball.

if you have obtained the source via the command 'git clone',
however, do note that line-endings of files in your working
directory might differ from line-endings of the respective
files in the upstream repository.

1 files changed, 113 insertions, 0 deletions

diff --git a/gcc/ada/s-stchop-rtems.adb b/gcc/ada/s-stchop-rtems.adb
new file mode 100644
index 000000000..ac0cfd0f4
--- /dev/null
+++ b/gcc/ada/s-stchop-rtems.adb
@@ -0,0 +1,113 @@
+------------------------------------------------------------------------------
+--                                                                          --
+--                 GNAT RUN-TIME LIBRARY (GNARL) COMPONENTS                 --
+--                                                                          --
+--     S Y S T E M . S T A C K _ C H E C K I N G . O P E R A T I O N S      --
+--                                                                          --
+--                                  B o d y                                 --
+--                                                                          --
+--          Copyright (C) 1999-2009, Free Software Foundation, Inc.         --
+--                                                                          --
+-- GNARL 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/>.                                          --
+--                                                                          --
+-- GNARL was developed by the GNARL team at Florida State University.       --
+-- Extensive contributions were provided by Ada Core Technologies, Inc.     --
+--                                                                          --
+------------------------------------------------------------------------------
+
+--  This is the RTEMS version of this package.
+--  This file should be kept synchronized with the general implementation
+--  provided by s-stchop.adb.
+
+pragma Restrictions (No_Elaboration_Code);
+--  We want to guarantee the absence of elaboration code because the
+--  binder does not handle references to this package.
+
+with Ada.Exceptions;
+
+with Interfaces.C; use Interfaces.C;
+
+package body System.Stack_Checking.Operations is
+
+   ----------------------------
+   -- Invalidate_Stack_Cache --
+   ----------------------------
+
+   procedure Invalidate_Stack_Cache (Any_Stack : Stack_Access) is
+      pragma Warnings (Off, Any_Stack);
+   begin
+      Cache := Null_Stack;
+   end Invalidate_Stack_Cache;
+
+   -----------------------------
+   -- Notify_Stack_Attributes --
+   -----------------------------
+
+   procedure Notify_Stack_Attributes
+     (Initial_SP : System.Address;
+      Size       : System.Storage_Elements.Storage_Offset)
+   is
+
+      --  RTEMS keeps all the information we need.
+
+      pragma Unreferenced (Size);
+      pragma Unreferenced (Initial_SP);
+
+   begin
+      null;
+   end Notify_Stack_Attributes;
+
+   -----------------
+   -- Stack_Check --
+   -----------------
+
+   function Stack_Check
+     (Stack_Address : System.Address) return Stack_Access
+   is
+      pragma Unreferenced (Stack_Address);
+
+      --  RTEMS has a routine to check if the stack is blown.
+      --  It returns a C99 bool.
+      function rtems_stack_checker_is_blown return Interfaces.C.unsigned_char;
+      pragma Import (C,
+         rtems_stack_checker_is_blown, "rtems_stack_checker_is_blown");
+
+   begin
+      --  RTEMS has a routine to check this.  So use it.
+
+      if rtems_stack_checker_is_blown /= 0 then
+         Ada.Exceptions.Raise_Exception
+           (E       => Storage_Error'Identity,
+            Message => "stack overflow detected");
+      end if;
+
+      return null;
+
+   end Stack_Check;
+
+   ------------------------
+   -- Update_Stack_Cache --
+   ------------------------
+
+   procedure Update_Stack_Cache (Stack : Stack_Access) is
+   begin
+      if not Multi_Processor then
+         Cache := Stack;
+      end if;
+   end Update_Stack_Cache;
+
+end System.Stack_Checking.Operations;