def _UXT(cpu, dest, src, src_width):
val = GetNBits(src.read(), src_width)<EOL>word = Operators.ZEXTEND(val, cpu.address_bit_size)<EOL>dest.write(word)<EOL>
Helper for UXT* family of instructions.

:param ARMv7Operand dest: the destination register; register
:param ARMv7Operand dest: the source register; register
:param int src_width: bits to consider of the src operand