Support 64-bit reserved_at_zero value nacl-side

run.py

 #!/usr/bin/python
 # Copyright (c) 2012 The Native Client Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 import os
 import platform
 import subprocess
 import sys
 
@@ skipping 207 matching lines @@
     prefix = [ env.qemu, '-cpu', 'cortex-a8']
     if env.trace:
       prefix += ['-d', 'in_asm,op,exec,cpu']
     args = ['-Q'] + args
 
   # Use the bootstrap loader on linux.
   if env.scons_os == 'linux':
     bootstrap = os.path.join(os.path.dirname(env.sel_ldr),
                              'nacl_helper_bootstrap')
     loader = [bootstrap, env.sel_ldr]
-    args = ['--r_debug=0xXXXXXXXXXXXXXXXX',
-            '--reserved_at_zero=0xXXXXXXXX'] + args
+    template_digits = 'X' * 16
+    args = ['--r_debug=0x' + template_digits,
+            '--reserved_at_zero=0x' + template_digits] + args
   else:
     loader = [env.sel_ldr]
   Run(prefix + loader + args)
 
 
 def FindOrBuildIRT(allow_build = True):
   if env.force_irt:
     if env.force_irt == 'none':
       return None
     elif env.force_irt == 'full':
@@ skipping 345 matching lines @@
       # We've hit the file system root
       break
 
   if os.path.basename(curdir) != 'native_client':
     Fatal('Unable to find native_client directory!')
   return curdir
 
 
 if __name__ == '__main__':
   sys.exit(main(sys.argv))