Subzero: Run sandboxed cross tests, and do some cleanup.

pydir/run-pnacl-sz.py

 #!/usr/bin/env python2
 
 import argparse
 import itertools
 import os
 import re
 import subprocess
 import sys
 import tempfile
 
@@ skipping 94 matching lines @@
       cmd += [llfile]
     asm_temp = None
     if args.assemble or args.disassemble:
       # On windows we may need to close the file first before it can be
       # re-opened by the other tools, so don't do delete-on-close,
       # and instead manually delete.
       asm_temp = tempfile.NamedTemporaryFile(delete=False)
       asm_temp.close()
     if args.assemble and args.filetype != 'obj':
       cmd += ['|', os.path.join(llvm_bin_path, 'llvm-mc'),
-              '-triple=i686-none-nacl',
+              # TODO(stichnot): -triple=i686-nacl should be used for a
+              # sandboxing test.  This means there should be an args.sandbox
+              # argument that also gets passed through to pnacl-sz.
+              '-triple=i686',
               '-filetype=obj', '-o', asm_temp.name]
     elif asm_temp:
       cmd += ['-o', asm_temp.name]
     if args.disassemble:
       # Show wide instruction encodings, diassemble, and show relocs.
       cmd += (['&&', os.path.join(binutils_bin_path, 'objdump')] +
               args.dis_flags +
               ['-w', '-d', '-r', '-Mintel', asm_temp.name])
 
     stdout_result = shellcmd(cmd, echo=args.echo_cmd)
     if not args.echo_cmd:
       sys.stdout.write(stdout_result)
     if asm_temp:
       os.remove(asm_temp.name)
 
 if __name__ == '__main__':
     main()