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from collections import namedtuple as nt
def btoi(b, signed=False):
return int.from_bytes(b, arch.endianness, signed=signed)
def itob(i, signed=False):
return i.to_bytes(arch.wordsize, arch.endianness, signed=signed)
Arch = nt("Arch", "wordsize endianness alignment nopcode")
x86 = Arch( 4, 'little', 16, b'\x90')
x86_64 = Arch( 8, 'little', 16, b'\x90')
ARM = Arch( 4, 'little', 8, b'\xe1\xa0\x00\x00')
THUMB = Arch( 4, 'little', 8, b'\x46\xc0')
arch = x86_64
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