bus_space_read
bus_space_read(1,8)
bus_space_read(2,16)
bus_space_read(4,32)
bus_space_read(8,64)
*a++ = __BS_FUNCTION(bus_space_read,BYTES)(t, h, o); \
*a++ = __BS_FUNCTION(bus_space_read,BYTES)(t, h, o); \
__BS_FUNCTION(bus_space_read,BYTES)(t, h1, o1 + o)); \
__BS_FUNCTION(bus_space_read,BYTES)(t, h1, o1 + o)); \