#!/usr/bin/python
#
# ### rough code to print EXTERNAL symbols from a PIC object file
#

import sys
import os

import coff_file

_CLASSES = {
  coff_file.C_NULL: 'NULL',
  coff_file.C_EXT: 'EXT',
  coff_file.C_STAT: 'STAT',
  coff_file.C_LABEL: 'LABEL',
  coff_file.C_FILE: 'FILE',
  coff_file.C_EOF: 'EOF',
  coff_file.C_SECTION: 'SECTION',
  }


def nm(fname):
  _, _, symbols, _ = coff_file.read_file(fname)
  for sym in symbols:
    if sym and sym[4] == coff_file.C_EXT:
      print '%s = %d [sect:%d type:%s cls:%s aux:%s]' \
          % (sym[0], sym[1], sym[2], sym[3],
             _CLASSES.get(sym[4], 'unknown'), sym[5])


if __name__ == '__main__':
  if len(sys.argv) != 2:
    print 'USAGE: %s FNAME' % (os.path.basename(sys.argv[0],))
    sys.exit(1)

  nm(sys.argv[1])