old_contents: #!/usr/bin/env python
  
  """A tool for looking for indirect jumps and calls in x86 binaries.
  
     Helpful to verify whether or not retpoline mitigations are catching
     all of the indirect branches in a binary and telling you which
     functions the remaining ones are in (assembly, etc).
  
     Depends on llvm-objdump being in your path and is tied to the
     dump format.
  """
  
  import os
  import sys
  import re
  import subprocess
  import optparse
  
  # Look for indirect calls/jmps in a binary. re: (call|jmp).*\* 
  def look_for_indirect(file):
      args = ['llvm-objdump']
      args.extend(["-d"])
      args.extend([file])
  
      p = subprocess.Popen(args=args, stdin=None, stderr=subprocess.PIPE, stdout=subprocess.PIPE)
      (stdout,stderr) = p.communicate()
  
      function = ""
      for line in stdout.splitlines():
          if line.startswith(' ') == False:
              function = line
          result = re.search('(call|jmp).*\*', line)
          if result != None:
              # TODO: Perhaps use cxxfilt to demangle functions?
              print function
              print line
      return
  
  # Compare the debug info between two files.
  def main(args):
      # No options currently other than the binary.
      parser = optparse.OptionParser("%prog [options] <binary>")
      (opts, args) = parser.parse_args(args)
      if len(args) != 2:
          parser.error("invalid number of arguments: %s" % len(args))
      look_for_indirect(args[1])
  
  if __name__ == '__main__':
      main(sys.argv)
  
new_contents: #!/usr/bin/env python
  
  """A tool for looking for indirect jumps and calls in x86 binaries.
  
     Helpful to verify whether or not retpoline mitigations are catching
     all of the indirect branches in a binary and telling you which
     functions the remaining ones are in (assembly, etc).
  
     Depends on llvm-objdump being in your path and is tied to the
     dump format.
  """
  
  import os
  import sys
  import re
  import subprocess
  import optparse
  
  # Look for indirect calls/jmps in a binary. re: (call|jmp).*\* 
  def look_for_indirect(file):
      args = ['llvm-objdump']
      args.extend(["-d"])
      args.extend([file])
  
      p = subprocess.Popen(args=args, stdin=None, stderr=subprocess.PIPE, stdout=subprocess.PIPE)
      (stdout,stderr) = p.communicate()
  
      function = ""
      for line in stdout.splitlines():
          if line.startswith(' ') == False:
              function = line
          result = re.search('(call|jmp).*\*', line)
          if result != None:
              # TODO: Perhaps use cxxfilt to demangle functions?
              print function
              print line
      return
  
  def main(args):
      # No options currently other than the binary.
      parser = optparse.OptionParser("%prog [options] <binary>")
      (opts, args) = parser.parse_args(args)
      if len(args) != 2:
          parser.error("invalid number of arguments: %s" % len(args))
      look_for_indirect(args[1])
  
  if __name__ == '__main__':
      main(sys.argv)
  
subject: Remove a stale comment cut and pasted from another file.