040000 tree c178ac196daa225bc374889ba8573a238aecb02f	bbr
040000 tree e1125a822e29f4a8c5b5a205986b36580e2a398b	bbsim
040000 tree 8af75571d641d2fef678db6c0d48e169afccdf80	bbsimctl
040000 tree 0f063f9026723bb0f21c8b807edf55b1633132f3	common