23 lines
607 B
Python
23 lines
607 B
Python
import ctypes
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import os
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import pathlib
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import struct
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from hexdump import hexdump
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fxn = None
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def disasm_raw(buf):
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global fxn
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if fxn is None:
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shared = pathlib.Path(__file__).parent / "disasm.so"
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if not shared.is_file():
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os.system(f'cd {pathlib.Path(__file__).parent} && gcc -shared disasm-a3xx.c -o disasm.so')
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fxn = ctypes.CDLL(shared.as_posix())['disasm']
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fxn(buf, len(buf))
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def disasm(buf):
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def _read_lib(off): return struct.unpack("I", buf[off:off+4])[0]
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image_offset = _read_lib(0xc0)
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image_size = _read_lib(0x100)
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disasm_raw(buf[image_offset:image_offset+image_size])
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