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to reflect the new license. We understand that people may be surprised that we're moving the header entirely to discuss the new license. We checked this carefully with the Foundation's lawyer and we believe this is the correct approach. Essentially, all code in the project is now made available by the LLVM project under our new license, so you will see that the license headers include that license only. Some of our contributors have contributed code under our old license, and accordingly, we have retained a copy of our old license notice in the top-level files in each project and repository. llvm-svn: 351636
96 lines
3.3 KiB
Python
Executable File
96 lines
3.3 KiB
Python
Executable File
#!/usr/bin/env python
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#===- lib/dfsan/scripts/build-libc-list.py ---------------------------------===#
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#
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# Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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# See https://llvm.org/LICENSE.txt for license information.
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# SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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#
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#===------------------------------------------------------------------------===#
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# The purpose of this script is to identify every function symbol in a set of
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# libraries (in this case, libc and libgcc) so that they can be marked as
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# uninstrumented, thus allowing the instrumentation pass to treat calls to those
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# functions correctly.
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import os
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import subprocess
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import sys
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from optparse import OptionParser
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def defined_function_list(object):
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functions = []
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readelf_proc = subprocess.Popen(['readelf', '-s', '-W', object],
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stdout=subprocess.PIPE)
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readelf = readelf_proc.communicate()[0].split('\n')
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if readelf_proc.returncode != 0:
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raise subprocess.CalledProcessError(readelf_proc.returncode, 'readelf')
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for line in readelf:
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if (line[31:35] == 'FUNC' or line[31:36] == 'IFUNC') and \
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line[39:44] != 'LOCAL' and \
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line[55:58] != 'UND':
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function_name = line[59:].split('@')[0]
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functions.append(function_name)
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return functions
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p = OptionParser()
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p.add_option('--libc-dso-path', metavar='PATH',
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help='path to libc DSO directory',
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default='/lib/x86_64-linux-gnu')
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p.add_option('--libc-archive-path', metavar='PATH',
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help='path to libc archive directory',
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default='/usr/lib/x86_64-linux-gnu')
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p.add_option('--libgcc-dso-path', metavar='PATH',
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help='path to libgcc DSO directory',
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default='/lib/x86_64-linux-gnu')
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p.add_option('--libgcc-archive-path', metavar='PATH',
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help='path to libgcc archive directory',
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default='/usr/lib/gcc/x86_64-linux-gnu/4.6')
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p.add_option('--with-libstdcxx', action='store_true',
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dest='with_libstdcxx',
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help='include libstdc++ in the list (inadvisable)')
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p.add_option('--libstdcxx-dso-path', metavar='PATH',
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help='path to libstdc++ DSO directory',
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default='/usr/lib/x86_64-linux-gnu')
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(options, args) = p.parse_args()
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libs = [os.path.join(options.libc_dso_path, name) for name in
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['ld-linux-x86-64.so.2',
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'libanl.so.1',
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'libBrokenLocale.so.1',
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'libcidn.so.1',
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'libcrypt.so.1',
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'libc.so.6',
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'libdl.so.2',
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'libm.so.6',
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'libnsl.so.1',
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'libpthread.so.0',
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'libresolv.so.2',
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'librt.so.1',
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'libthread_db.so.1',
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'libutil.so.1']]
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libs += [os.path.join(options.libc_archive_path, name) for name in
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['libc_nonshared.a',
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'libpthread_nonshared.a']]
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libs.append(os.path.join(options.libgcc_dso_path, 'libgcc_s.so.1'))
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libs.append(os.path.join(options.libgcc_archive_path, 'libgcc.a'))
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if options.with_libstdcxx:
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libs.append(os.path.join(options.libstdcxx_dso_path, 'libstdc++.so.6'))
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functions = []
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for l in libs:
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if os.path.exists(l):
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functions += defined_function_list(l)
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else:
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print >> sys.stderr, 'warning: library %s not found' % l
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functions = list(set(functions))
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functions.sort()
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for f in functions:
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print 'fun:%s=uninstrumented' % f
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