revng-revng/python/scripts/revng-merge-dynamic

#!/usr/bin/env python3
#
# This file is distributed under the MIT License. See LICENSE.md for details.
#

import argparse
import sys

from revng.cli.merge_dynamic import merge_dynamic
from revng.cli.merge_dynamic.log import set_verbose


def main():
    parser = argparse.ArgumentParser(
        description="Merge the dynamic portions of the translate ELF with the one from the"
        " host ELF."
    )
    parser.add_argument(
        "to_extend",
        metavar="TO_EXTEND",
        help="The ELF to extend.",
    )
    parser.add_argument(
        "source",
        metavar="SOURCE",
        help="The original ELF.",
    )
    parser.add_argument(
        "output",
        metavar="OUTPUT",
        nargs="?",
        default="-",
        help="The output ELF.",
    )
    parser.add_argument(
        "--verbose",
        action="store_true",
        help="Print debug information and warnings.",
    )
    parser.add_argument(
        "--base",
        metavar="ADDRESS",
        default="0x400000",
        help="The base address where dynamic object have been loaded.",
    )
    parser.add_argument(
        "--merge-load-segments",
        action="store_true",
        help="Merge the LOADed segments from the source ELF into the output ELF.",
    )

    args = parser.parse_args()
    set_verbose(args.verbose)

    base = int(args.base, base=0)

    if args.output == "-":
        output_file = sys.stdout
    else:
        output_file = open(args.output, "wb")

    with output_file, open(args.source, "rb") as source_file, open(
        args.to_extend, "rb"
    ) as to_extend_file:
        retcode = merge_dynamic(
            to_extend_file,
            source_file,
            output_file,
            base=base,
            merge_load_segments=args.merge_load_segments,
        )

    return retcode


if __name__ == "__main__":
    retcode = main()
    sys.exit(retcode)