040000 tree c178ac196daa225bc374889ba8573a238aecb02f	bbr
040000 tree 839f17c1ac5587bfe21a1f58cc31b078d6caa860	bbsim
040000 tree 929ffdc2aa93e802487fcccff86d0200c68a804b	bbsimctl
040000 tree 80fcd51963e8b2fea69b59389d755df29b934581	common