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27 lines
712 B
Python
27 lines
712 B
Python
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#!/usr/bin/env python3
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import argparse, struct, sys
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if __name__ == '__main__':
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parser = argparse.ArgumentParser()
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parser.add_argument('file', help='input file')
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args = parser.parse_args()
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with open(args.file, 'r+b') as f:
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magic = struct.unpack('>I', f.read(4))[0]
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if magic != 0x7F454C46:
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print('Error: Not an ELF file')
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sys.exit(1)
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f.seek(36)
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flags = struct.unpack('>I', f.read(4))[0]
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if flags & 0xF0000000 != 0x20000000: # test for mips3
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print('Error: Architecture not mips3')
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sys.exit(1)
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flags |= 0x00001000 # set EF_MIPS_ABI_O32
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f.seek(36)
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f.write(struct.pack('>I', flags))
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