tools/mac/dump-static-initializers.py

   1 #!/usr/bin/env python
   2 # Copyright (c) 2013 The Chromium Authors. All rights reserved.
   3 # Use of this source code is governed by a BSD-style license that can be
   4 # found in the LICENSE file.
   5
   6 """
   7 Dumps a list of files with static initializers. Use with release builds.
   8
   9 Usage:
  10   tools/mac/dump-static-initializers.py out/Release/Chromium\ Framework.framework.dSYM/Contents/Resources/DWARF/Chromium\ Framework
  11
  12 Do NOT use mac_strip_release=0 or component=shared_library if you want to use
  13 this script.
  14 """
  15
  16 import optparse
  17 import re
  18 import subprocess
  19 import sys
  20
  21 # Matches for example:
  22 # [     1] 000001ca 64 (N_SO         ) 00     0000   0000000000000000 'test.cc'
  23 dsymutil_file_re = re.compile("N_SO.*'([^']*)'")
  24
  25 # Matches for example:
  26 # [     2] 000001d2 66 (N_OSO        ) 00     0001   000000004ed856a0 '/Volumes/MacintoshHD2/src/chrome-git/src/test.o'
  27 dsymutil_o_file_re = re.compile("N_OSO.*'([^']*)'")
  28
  29 # Matches for example:
  30 # [     8] 00000233 24 (N_FUN        ) 01     0000   0000000000001b40 '__GLOBAL__I_s'
  31 # [185989] 00dc69ef 26 (N_STSYM      ) 02     0000   00000000022e2290 '__GLOBAL__I_a'
  32 dsymutil_re = re.compile(r"(?:N_FUN|N_STSYM).*\s[0-9a-f]*\s'__GLOBAL__I_")
  33
  34 def ParseDsymutil(binary):
  35   """Given a binary, prints source and object filenames for files with
  36   static initializers.
  37   """
  38
  39   child = subprocess.Popen(['dsymutil', '-s', binary], stdout=subprocess.PIPE)
  40   for line in child.stdout:
  41     file_match = dsymutil_file_re.search(line)
  42     if file_match:
  43       current_filename = file_match.group(1)
  44     else:
  45       o_file_match = dsymutil_o_file_re.search(line)
  46       if o_file_match:
  47         current_o_filename = o_file_match.group(1)
  48       else:
  49         match = dsymutil_re.search(line)
  50         if match:
  51           print current_filename
  52           print current_o_filename
  53           print
  54
  55
  56 def main():
  57   parser = optparse.OptionParser(usage='%prog filename')
  58   opts, args = parser.parse_args()
  59   if len(args) != 1:
  60     parser.error('missing filename argument')
  61     return 1
  62   binary = args[0]
  63
  64   ParseDsymutil(binary)
  65   return 0
  66
  67
  68 if '__main__' == __name__:
  69   sys.exit(main())