mirror of
https://github.com/zeldaret/oot.git
synced 2025-01-15 21:07:15 +00:00
35 lines
1 KiB
Python
35 lines
1 KiB
Python
|
#!/usr/bin/env python3
|
||
|
|
import struct, sys, argparse
|
||
|
|
|
||
|
|
import elftools.elf.elffile
|
||
|
|
|
||
|
|
# Patches driverominit.o to change bnez t6,3c to nop at offset 0x20 in the .text section
|
||
|
|
|
||
|
|
if __name__ == "__main__":
|
||
|
|
parser = argparse.ArgumentParser()
|
||
|
|
|
||
|
|
parser.add_argument("file", help="input file")
|
||
|
|
args = parser.parse_args()
|
||
|
|
|
||
|
|
with open(args.file, "r+b") as f:
|
||
|
|
elf = elftools.elf.elffile.ELFFile(f)
|
||
|
|
|
||
|
|
text_offset = 0
|
||
|
|
for section in elf.iter_sections():
|
||
|
|
if section.name == ".text":
|
||
|
|
text_offset = section["sh_offset"]
|
||
|
|
break
|
||
|
|
|
||
|
|
if text_offset == 0:
|
||
|
|
print("Error: .text section not found")
|
||
|
|
sys.exit(1)
|
||
|
|
|
||
|
|
f.seek(text_offset + 0x20)
|
||
|
|
instruction = struct.unpack(">I", f.read(4))[0]
|
||
|
|
if instruction != 0x15C00006: # bnez t6,3c
|
||
|
|
print("Error: expected instruction not found, found 0x%08X" % instruction)
|
||
|
|
sys.exit(1)
|
||
|
|
|
||
|
|
f.seek(text_offset + 0x20)
|
||
|
|
f.write(struct.pack(">I", 0x00000000)) # nop
|