Subzero: Add Non-SFI support for x86-32.

pydir/utils.py

 import os
 import subprocess
 import sys
 
 def shellcmd(command, echo=True):
     if not isinstance(command, str):
         command = ' '.join(command)
 
     if echo: print '[cmd]', command
 
     stdout_result = subprocess.check_output(command, shell=True)
     if echo: sys.stdout.write(stdout_result)
     return stdout_result
 
 def FindBaseNaCl():
     """Find the base native_client/ directory."""
     nacl = 'native_client'
     path_list = os.getcwd().split(os.sep)
     if nacl not in path_list:
         return None
     last_index = len(path_list) - path_list[::-1].index(nacl)
     return os.sep.join(path_list[:last_index])
+
+def get_sfi_string(args, sb_ret, nonsfi_ret, native_ret):
+    """Return a value depending on args.sandbox and args.nonsfi."""
+    if args.sandbox:
+        assert(not args.nonsfi)
+        return sb_ret
+    if args.nonsfi:
+        return nonsfi_ret
+    return native_ret