isle-portable/tools/vtable/vtable.py

111 lines
3.5 KiB
Python
Executable file

#!/usr/bin/env python3
import os
import argparse
import logging
from typing import List
import colorama
from isledecomp.bin import Bin as IsleBin
from isledecomp.compare import Compare as IsleCompare
from isledecomp.utils import print_combined_diff
# Ignore all compare-db messages.
logging.getLogger("isledecomp.compare").addHandler(logging.NullHandler())
colorama.just_fix_windows_console()
def parse_args() -> argparse.Namespace:
parser = argparse.ArgumentParser(description="Comparing vtables.")
parser.add_argument(
"original", metavar="original-binary", help="The original binary"
)
parser.add_argument(
"recompiled", metavar="recompiled-binary", help="The recompiled binary"
)
parser.add_argument(
"pdb", metavar="recompiled-pdb", help="The PDB of the recompiled binary"
)
parser.add_argument(
"decomp_dir", metavar="decomp-dir", help="The decompiled source tree"
)
parser.add_argument(
"--verbose", "-v", action="store_true", help="Show more detailed information"
)
parser.add_argument(
"--no-color", "-n", action="store_true", help="Do not color the output"
)
(args, _) = parser.parse_known_args()
if not os.path.isfile(args.original):
parser.error(f"Original binary {args.original} does not exist")
if not os.path.isfile(args.recompiled):
parser.error(f"Recompiled binary {args.recompiled} does not exist")
if not os.path.isfile(args.pdb):
parser.error(f"Symbols PDB {args.pdb} does not exist")
if not os.path.isdir(args.decomp_dir):
parser.error(f"Source directory {args.decomp_dir} does not exist")
return args
def show_vtable_diff(udiff: List, _: bool = False, plain: bool = False):
print_combined_diff(udiff, plain)
def print_summary(vtable_count: int, problem_count: int):
if problem_count == 0:
print(f"Vtables found: {vtable_count}.\n100% match.")
return
print(f"Vtables found: {vtable_count}.\nVtables not matching: {problem_count}.")
def main():
args = parse_args()
vtable_count = 0
problem_count = 0
with IsleBin(args.original) as orig_bin, IsleBin(args.recompiled) as recomp_bin:
engine = IsleCompare(orig_bin, recomp_bin, args.pdb, args.decomp_dir)
for tbl_match in engine.compare_vtables():
vtable_count += 1
if tbl_match.ratio < 1:
problem_count += 1
udiff = list(tbl_match.udiff)
print(
tbl_match.name,
f": orig 0x{tbl_match.orig_addr:x}, recomp 0x{tbl_match.recomp_addr:x}",
)
show_vtable_diff(udiff, args.verbose, args.no_color)
print()
print_summary(vtable_count, problem_count)
# Now compare adjuster thunk functions, if there are any.
# These matches are generated by the compare engine.
# They should always match 100%. If not, there is a problem
# with the inheritance or an overriden function.
for fun_match in engine.get_functions():
if "`vtordisp" not in fun_match.name:
continue
diff = engine.compare_address(fun_match.orig_addr)
if diff.ratio < 1.0:
problem_count += 1
print(
f"Problem with adjuster thunk {fun_match.name} (0x{fun_match.orig_addr:x} / 0x{fun_match.recomp_addr:x})"
)
return 1 if problem_count > 0 else 0
if __name__ == "__main__":
raise SystemExit(main())