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#!/usr/bin/python
# Copyright (c) 2011 The Chromium Authors. All rights reserved.
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.
#
# This takes three command-line arguments:
# MUNGE-PHDR-PROGRAM file name of program built from
# nacl_helper_bootstrap_munge_phdr.c
# INFILE raw linked ELF file name
# OUTFILE output file name
#
# We just run the MUNGE-PHDR-PROGRAM on a copy of INFILE.
# That modifies the file in place. Then we move it to OUTFILE.
#
# We only have this wrapper script because nacl_helper_bootstrap_munge_phdr.c
# wants to modify a file in place (and it would be a much longer and more
# fragile program if it created a fresh ELF output file instead).
import shutil
import subprocess
import sys
def Main(argv):
if len(argv) != 4:
print 'Usage: %s MUNGE-PHDR-PROGRAM INFILE OUTFILE' % argv[0]
sys.exit(1)
[prog, munger, infile, outfile] = argv
tmpfile = outfile + '.tmp'
shutil.copy(infile, tmpfile)
segment_num = '2'
subprocess.check_call([munger, tmpfile, segment_num])
shutil.move(tmpfile, outfile)
if __name__ == '__main__':
Main(sys.argv)
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