blob: ed120d748a2ccb50310457ab4082a45440660230 [file] [log] [blame]
#!/usr/bin/env python3.8
# Copyright 2021 The Fuchsia Authors. All rights reserved.
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.
validate that zircon.elf does not contain banned symbols
If zircon.elf contains no guard variables for function scoped statics,
generate a depfile and exit with 0. Otherwise, print the mangled
symbol names for function scoped static guard variables and exit with
a non-zero result.
import argparse
import io
import os
import subprocess
import sys
# Guard variables for function scoped statics start with _ZGVZ.
def main():
parser = argparse.ArgumentParser(description=__doc__)
parser.add_argument('nm_bin', help='path to nm binary')
help='path to a file containing the path to zircon.elf')
parser.add_argument('output', help='path to the output file to create')
parser.add_argument('depfile', help='path to the depfile to generate')
args = parser.parse_args()
# Write the depfile.
with open(args.depfile, 'w') as depfile:
'{:s}: {:s}'.format(args.output, args.zircon_elf_rsp), file=depfile)
# Read the path to zircon.elf.
with open(args.zircon_elf_rsp, 'r') as zircon_rsp_elf:
zircon_elf ='\n')
# Create a list of guard variables for function scoped statics.
nm = subprocess.Popen(
[args.nm_bin, '-j', zircon_elf], stdout=subprocess.PIPE)
banned_guard_variables = list(
lambda x: x.decode('UTF-8').rstrip('\n'),
filter(lambda x: x.startswith(BANNED_PREFIX), nm.stdout)))
if len(banned_guard_variables) > 0:
'{:s}: ERROR: {:s} contains non-trivial function scoped statics. Mangled guard variable symbol names follow:'
.format(parser.prog, zircon_elf))
print(*banned_guard_variables, sep='\n')
# None found. Write an empty output file.
with open(args.output, 'w') as file:
os.utime(, None)
if __name__ == '__main__':