dk64/tools/set_o32abi_bit.py
2023-06-02 05:11:11 +09:30

26 lines
711 B
Python

#!/usr/bin/env python3
import argparse, struct, sys
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:
magic = struct.unpack('>I', f.read(4))[0]
if magic != 0x7F454C46:
print('Error: Not an ELF file')
sys.exit(1)
f.seek(36)
flags = struct.unpack('>I', f.read(4))[0]
if flags & 0xF0000000 != 0x20000000: # test for mips3
print('Error: Architecture not mips3')
sys.exit(1)
flags |= 0x00001000 # set EF_MIPS_ABI_O32
f.seek(36)
f.write(struct.pack('>I', flags))