| #!/usr/bin/env python3 |
| # |
| # Copyright 2019 The Hafnium Authors. |
| # |
| # Licensed under the Apache License, Version 2.0 (the "License"); |
| # you may not use this file except in compliance with the License. |
| # You may obtain a copy of the License at |
| # |
| # https://www.apache.org/licenses/LICENSE-2.0 |
| # |
| # Unless required by applicable law or agreed to in writing, software |
| # distributed under the License is distributed on an "AS IS" BASIS, |
| # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| # See the License for the specific language governing permissions and |
| # limitations under the License. |
| |
| """Generate a header file with definitions of constants parsed from a binary.""" |
| |
| import argparse |
| import os |
| import re |
| import subprocess |
| import sys |
| |
| HF_ROOT = os.path.dirname(os.path.dirname(os.path.dirname(__file__))) |
| BINUTILS_ROOT = os.path.join(HF_ROOT, "prebuilts", "linux-x64", "gcc", "bin") |
| STRINGS = os.path.join(BINUTILS_ROOT, "aarch64-linux-android-strings") |
| |
| PROLOGUE = """ |
| /** |
| * This file was auto-generated by {}. |
| * Changes will be overwritten. |
| */ |
| |
| #pragma once |
| |
| """.format(__file__) |
| |
| def main(): |
| parser = argparse.ArgumentParser() |
| parser.add_argument("bin_file", |
| help="binary file to be parsed for definitions of constants") |
| parser.add_argument("out_file", help="output file"); |
| args = parser.parse_args() |
| |
| # Regex for finding definitions: <HAFNIUM_DEFINE name value /> |
| regex = re.compile(r'<HAFNIUM_DEFINE\s([A-Za-z0-9_]+)\s([0-9]+) />') |
| |
| # Extract strings from the input binary file. |
| stdout = subprocess.check_output([ STRINGS, args.bin_file ]) |
| stdout = stdout.decode('utf-8').split(os.linesep) |
| |
| with open(args.out_file, "w") as f: |
| f.write(PROLOGUE) |
| for line in stdout: |
| for match in regex.findall(line): |
| f.write("#define {} ({})\n".format( |
| match[0], match[1])) |
| |
| if __name__ == "__main__": |
| sys.exit(main()) |