read_stage1_bbl_cb
pl->pl_cb.read_bbl = read_stage1_bbl_cb;
pl->pl_cb.read_bbl = read_stage1_bbl_cb;
pl->pl_cb.read_bbl = read_stage1_bbl_cb;
pl->pl_cb.read_bbl = read_stage1_bbl_cb;
pl->pl_cb.read_bbl = read_stage1_bbl_cb;