Get address of the basic block or CFG node specified by v.
        :param v: Can be one of the following: a CFGNode, or an address.
        :return: The address.
        :rtype: int

def _get_addr(self, v):
        """
        Get address of the basic block or CFG node specified by v.
        :param v: Can be one of the following: a CFGNode, or an address.
        :return: The address.
        :rtype: int
        """

        if isinstance(v, CFGNode):
            return v.addr
        elif type(v) is int:
            return v
        else:
            raise AngrBladeError('Unsupported SimRun argument type %s' % type(v))