2012-04-30 20:06:50 +02:00
|
|
|
#! /usr/bin/env python
|
|
|
|
|
2017-01-01 07:50:51 +01:00
|
|
|
# Copyright (C) 2011-2017 Free Software Foundation, Inc.
|
2012-04-30 20:06:50 +02:00
|
|
|
#
|
|
|
|
# This file is part of GDB.
|
|
|
|
#
|
|
|
|
# This program is free software; you can redistribute it and/or modify
|
|
|
|
# it under the terms of the GNU General Public License as published by
|
|
|
|
# the Free Software Foundation; either version 3 of the License, or
|
|
|
|
# (at your option) any later version.
|
|
|
|
#
|
|
|
|
# This program is distributed in the hope that it will be useful,
|
|
|
|
# but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
|
|
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
|
|
# GNU General Public License for more details.
|
|
|
|
#
|
|
|
|
# You should have received a copy of the GNU General Public License
|
|
|
|
# along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
|
|
|
|
|
|
# This program requires readelf, gdb and objcopy. The default values are gdb
|
|
|
|
# from the build tree and objcopy and readelf from $PATH. They may be
|
|
|
|
# overridden by setting environment variables GDB, READELF and OBJCOPY
|
|
|
|
# respectively. We assume the current directory is either $obj/gdb or
|
|
|
|
# $obj/gdb/testsuite.
|
|
|
|
#
|
|
|
|
# Example usage:
|
|
|
|
#
|
|
|
|
# bash$ cd $objdir/gdb/testsuite
|
|
|
|
# bash$ python test_pubnames_and_indexes.py <binary_name>
|
|
|
|
|
|
|
|
"""test_pubnames_and_indexes.py
|
|
|
|
|
|
|
|
Test that the gdb_index produced by gold is identical to the gdb_index
|
|
|
|
produced by gdb itself.
|
|
|
|
|
|
|
|
Further check that the pubnames and pubtypes produced by gcc are identical
|
|
|
|
to those that gdb produces.
|
|
|
|
|
|
|
|
Finally, check that all strings are canonicalized identically.
|
|
|
|
"""
|
|
|
|
|
|
|
|
__author__ = 'saugustine@google.com (Sterling Augustine)'
|
|
|
|
|
|
|
|
import os
|
|
|
|
import subprocess
|
|
|
|
import sys
|
|
|
|
|
|
|
|
OBJCOPY = None
|
|
|
|
READELF = None
|
|
|
|
GDB = None
|
|
|
|
|
|
|
|
def get_pub_info(filename, readelf_option):
|
|
|
|
"""Parse and return all the pubnames or pubtypes produced by readelf with the
|
|
|
|
given option.
|
|
|
|
"""
|
|
|
|
readelf = subprocess.Popen([READELF, '--debug-dump=' + readelf_option,
|
|
|
|
filename], stdout=subprocess.PIPE)
|
|
|
|
pubnames = []
|
|
|
|
|
|
|
|
in_list = False;
|
|
|
|
for line in readelf.stdout:
|
|
|
|
fields = line.split(None, 1)
|
|
|
|
if (len(fields) == 2 and fields[0] == 'Offset'
|
|
|
|
and fields[1].strip() == 'Name'):
|
|
|
|
in_list = True
|
|
|
|
# Either a blank-line or a new Length field terminates the current section.
|
|
|
|
elif (len(fields) == 0 or fields[0] == 'Length:'):
|
|
|
|
in_list = False;
|
|
|
|
elif (in_list):
|
|
|
|
pubnames.append(fields[1].strip())
|
|
|
|
|
|
|
|
readelf.wait()
|
|
|
|
return pubnames
|
|
|
|
|
|
|
|
|
|
|
|
def get_gdb_index(filename):
|
|
|
|
"""Use readelf to dump the gdb index and collect the types and names"""
|
|
|
|
readelf = subprocess.Popen([READELF, '--debug-dump=gdb_index',
|
|
|
|
filename], stdout=subprocess.PIPE)
|
|
|
|
index_symbols = []
|
|
|
|
symbol_table_started = False
|
|
|
|
for line in readelf.stdout:
|
|
|
|
if (line == 'Symbol table:\n'):
|
|
|
|
symbol_table_started = True;
|
|
|
|
elif (symbol_table_started):
|
|
|
|
# Readelf prints gdb-index lines formatted like so:
|
|
|
|
# [ 4] two::c2<double>::c2: 0
|
|
|
|
# So take the string between the first close bracket and the last colon.
|
|
|
|
index_symbols.append(line[line.find(']') + 2: line.rfind(':')])
|
|
|
|
|
|
|
|
readelf.wait()
|
|
|
|
return index_symbols
|
|
|
|
|
|
|
|
|
|
|
|
def CheckSets(list0, list1, name0, name1):
|
|
|
|
"""Report any setwise differences between the two lists"""
|
|
|
|
|
|
|
|
if len(list0) == 0 or len(list1) == 0:
|
|
|
|
return False
|
|
|
|
|
|
|
|
difference0 = set(list0) - set(list1)
|
|
|
|
if len(difference0) != 0:
|
|
|
|
print "Elements in " + name0 + " but not " + name1 + ": (",
|
|
|
|
print len(difference0),
|
|
|
|
print ")"
|
|
|
|
for element in difference0:
|
|
|
|
print " " + element
|
|
|
|
|
|
|
|
difference1 = set(list1) - set(list0)
|
|
|
|
if len(difference1) != 0:
|
|
|
|
print "Elements in " + name1 + " but not " + name0 + ": (",
|
|
|
|
print len(difference1),
|
|
|
|
print ")"
|
|
|
|
for element in difference1:
|
|
|
|
print " " + element
|
|
|
|
|
|
|
|
if (len(difference0) != 0 or len(difference1) != 0):
|
|
|
|
return True
|
|
|
|
|
|
|
|
print name0 + " and " + name1 + " are identical."
|
|
|
|
return False
|
|
|
|
|
|
|
|
|
|
|
|
def find_executables():
|
|
|
|
"""Find the copies of readelf, objcopy and gdb to use."""
|
|
|
|
# Executable finding logic follows cc-with-index.sh
|
|
|
|
global READELF
|
|
|
|
READELF = os.getenv('READELF')
|
|
|
|
if READELF is None:
|
|
|
|
READELF = 'readelf'
|
|
|
|
global OBJCOPY
|
|
|
|
OBJCOPY = os.getenv('OBJCOPY')
|
|
|
|
if OBJCOPY is None:
|
|
|
|
OBJCOPY = 'objcopy'
|
|
|
|
|
|
|
|
global GDB
|
|
|
|
GDB = os.getenv('GDB')
|
|
|
|
if (GDB is None):
|
|
|
|
if os.path.isfile('./gdb') and os.access('./gdb', os.X_OK):
|
|
|
|
GDB = './gdb'
|
|
|
|
elif os.path.isfile('../gdb') and os.access('../gdb', os.X_OK):
|
|
|
|
GDB = '../gdb'
|
|
|
|
elif os.path.isfile('../../gdb') and os.access('../../gdb', os.X_OK):
|
|
|
|
GDB = '../../gdb'
|
|
|
|
else:
|
|
|
|
# Punt and use the gdb in the path.
|
|
|
|
GDB = 'gdb'
|
|
|
|
|
|
|
|
|
|
|
|
def main(argv):
|
|
|
|
"""The main subprogram."""
|
|
|
|
if len(argv) != 2:
|
|
|
|
print "Usage: test_pubnames_and_indexes.py <filename>"
|
|
|
|
sys.exit(2)
|
|
|
|
|
|
|
|
find_executables();
|
|
|
|
|
|
|
|
# Get the index produced by Gold--It should have been built into the binary.
|
|
|
|
gold_index = get_gdb_index(argv[1])
|
|
|
|
|
|
|
|
# Collect the pubnames and types list
|
|
|
|
pubs_list = get_pub_info(argv[1], "pubnames")
|
|
|
|
pubs_list = pubs_list + get_pub_info(argv[1], "pubtypes")
|
|
|
|
|
|
|
|
# Generate a .gdb_index with gdb
|
|
|
|
gdb_index_file = argv[1] + '.gdb-generated-index'
|
|
|
|
subprocess.check_call([OBJCOPY, '--remove-section', '.gdb_index',
|
|
|
|
argv[1], gdb_index_file])
|
|
|
|
subprocess.check_call([GDB, '-batch', '-nx', gdb_index_file,
|
|
|
|
'-ex', 'save gdb-index ' + os.path.dirname(argv[1]),
|
|
|
|
'-ex', 'quit'])
|
|
|
|
subprocess.check_call([OBJCOPY, '--add-section',
|
|
|
|
'.gdb_index=' + gdb_index_file + '.gdb-index',
|
|
|
|
gdb_index_file])
|
|
|
|
gdb_index = get_gdb_index(gdb_index_file)
|
|
|
|
os.remove(gdb_index_file)
|
|
|
|
os.remove(gdb_index_file + '.gdb-index')
|
|
|
|
|
|
|
|
failed = False
|
|
|
|
gdb_index.sort()
|
|
|
|
gold_index.sort()
|
|
|
|
pubs_list.sort()
|
|
|
|
|
|
|
|
# Find the differences between the various indices.
|
|
|
|
if len(gold_index) == 0:
|
|
|
|
print "Gold index is empty"
|
|
|
|
failed |= True
|
|
|
|
|
|
|
|
if len(gdb_index) == 0:
|
|
|
|
print "Gdb index is empty"
|
|
|
|
failed |= True
|
|
|
|
|
|
|
|
if len(pubs_list) == 0:
|
|
|
|
print "Pubs list is empty"
|
|
|
|
failed |= True
|
|
|
|
|
|
|
|
failed |= CheckSets(gdb_index, gold_index, "gdb index", "gold index")
|
|
|
|
failed |= CheckSets(pubs_list, gold_index, "pubs list", "gold index")
|
|
|
|
failed |= CheckSets(pubs_list, gdb_index, "pubs list", "gdb index")
|
|
|
|
|
|
|
|
if failed:
|
|
|
|
print "Test failed"
|
|
|
|
sys.exit(1)
|
|
|
|
|
|
|
|
|
|
|
|
if __name__ == '__main__':
|
|
|
|
main(sys.argv)
|