new file mode 100644
--- /dev/null
+++ b/host/infra/checkdata.cxx
@@ -0,0 +1,74 @@
+//{{{  Banner                                           
+
+//============================================================================
+//
+//      checkdata.cxx
+//
+//      Host side implementation of the check_func() and check_data()
+//      utilities.
+//
+//============================================================================
+//####COPYRIGHTBEGIN####
+//                                                                          
+// ----------------------------------------------------------------------------
+// Copyright (C) 1998, 1999, 2000 Red Hat, Inc.
+//
+// This file is part of the eCos host tools.
+//
+// This program is free software; you can redistribute it and/or modify it 
+// under the terms of the GNU General Public License as published by the Free 
+// Software Foundation; either version 2 of the License, or (at your option) 
+// any later version.
+// 
+// This program is distributed in the hope that it will be useful, but WITHOUT 
+// 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 along with
+// this program; if not, write to the Free Software Foundation, Inc., 
+// 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
+//
+// ----------------------------------------------------------------------------
+//                                                                          
+//####COPYRIGHTEND####
+//============================================================================
+//#####DESCRIPTIONBEGIN####
+//
+// Author(s):   bartv
+// Contact(s):  bartv
+// Date:        1998/12/02
+// Version:     0.01
+// Purpose:     To provide a host-side implementation of two of the
+//              eCos assertion facilities. facilities.
+//
+//####DESCRIPTIONEND####
+//============================================================================
+
+//}}}
+//{{{  #include's                                       
+
+#include "cyg/infra/cyg_ass.h"
+
+//}}}
+
+// -------------------------------------------------------------------------
+// It is convenient to have cyg_check_data_ptr() and cyg_check_func_ptr()
+// in a separate file from cyg_assert_fail(). That way users can override
+// cyg_assert_fail() itself in application code without losing access to
+// the check_data and check_func routines.
+//
+// The actual implementation is very limited. It might be possible to
+// do better on specific platforms.
+
+extern "C" cyg_bool
+cyg_check_data_ptr( void * ptr )
+{
+    return 0 != ptr;
+}
+
+extern "C" cyg_bool
+cyg_check_func_ptr ( void (*ptr)(void) )
+{
+    return 0 != ptr;
+}