blob: ef108c35adf7410f3fe667c642ee72e62f2859e3 [file] [log] [blame]
# elftools example:
# In the .debug_info section, Dwarf Information Entries (DIEs) form a tree.
# pyelftools provides easy access to this tree, as demonstrated here.
# Eli Bendersky (
# This code is in the public domain
from __future__ import print_function
import sys
# If pyelftools is not installed, the example can also run from the root or
# examples/ dir of the source distribution.
sys.path[0:0] = ['.', '..']
from elftools.elf.elffile import ELFFile
def process_file(filename):
print('Processing file:', filename)
with open(filename, 'rb') as f:
elffile = ELFFile(f)
if not elffile.has_dwarf_info():
print(' file has no DWARF info')
# get_dwarf_info returns a DWARFInfo context object, which is the
# starting point for all DWARF-based processing in pyelftools.
dwarfinfo = elffile.get_dwarf_info()
for CU in dwarfinfo.iter_CUs():
# DWARFInfo allows to iterate over the compile units contained in
# the .debug_info section. CU is a CompileUnit object, with some
# computed attributes (such as its offset in the section) and
# a header which conforms to the DWARF standard. The access to
# header elements is, as usual, via item-lookup.
print(' Found a compile unit at offset %s, length %s' % (
CU.cu_offset, CU['unit_length']))
# Start with the top DIE, the root for this CU's DIE tree
top_DIE = CU.get_top_DIE()
print(' Top DIE with tag=%s' % top_DIE.tag)
# We're interested in the filename...
print(' name=%s' % top_DIE.get_full_path())
# Display DIEs recursively starting with top_DIE
def die_info_rec(die, indent_level=' '):
""" A recursive function for showing information about a DIE and its
print(indent_level + 'DIE tag=%s' % die.tag)
child_indent = indent_level + ' '
for child in die.iter_children():
die_info_rec(child, child_indent)
if __name__ == '__main__':
for filename in sys.argv[1:]: