/usr/lib/mlton/sml/mlrisc-lib/ppc/ is in mlton-basis 20130715-3.
This file is owned by root:root, with mode 0o755.
..
/usr/lib/mlton/sml/mlrisc-lib/ppc/README.ppc
/usr/lib/mlton/sml/mlrisc-lib/ppc/backpatch/
/usr/lib/mlton/sml/mlrisc-lib/ppc/backpatch/ppcDelaySlots.sml
/usr/lib/mlton/sml/mlrisc-lib/ppc/backpatch/ppcJumps.sml
/usr/lib/mlton/sml/mlrisc-lib/ppc/c-calls/
/usr/lib/mlton/sml/mlrisc-lib/ppc/c-calls/ppc-macosx.sml
/usr/lib/mlton/sml/mlrisc-lib/ppc/emit/
/usr/lib/mlton/sml/mlrisc-lib/ppc/emit/ppcAsm.sml
/usr/lib/mlton/sml/mlrisc-lib/ppc/emit/ppcAsmSyntax.sml
/usr/lib/mlton/sml/mlrisc-lib/ppc/emit/ppcMC.sml
/usr/lib/mlton/sml/mlrisc-lib/ppc/flowgraph/
/usr/lib/mlton/sml/mlrisc-lib/ppc/flowgraph/ppcDarwinPseudoOps.sml
/usr/lib/mlton/sml/mlrisc-lib/ppc/flowgraph/ppcGasPseudoOps.sml
/usr/lib/mlton/sml/mlrisc-lib/ppc/instructions/
/usr/lib/mlton/sml/mlrisc-lib/ppc/instructions/ppcCells.sml
/usr/lib/mlton/sml/mlrisc-lib/ppc/instructions/ppcCompInstrExt.sml
/usr/lib/mlton/sml/mlrisc-lib/ppc/instructions/ppcFreqProps.sml
/usr/lib/mlton/sml/mlrisc-lib/ppc/instructions/ppcInstr.sml
/usr/lib/mlton/sml/mlrisc-lib/ppc/instructions/ppcInstrExt.sml
/usr/lib/mlton/sml/mlrisc-lib/ppc/instructions/ppcProps.sml
/usr/lib/mlton/sml/mlrisc-lib/ppc/instructions/ppcShuffle.sig
/usr/lib/mlton/sml/mlrisc-lib/ppc/instructions/ppcShuffle.sml
/usr/lib/mlton/sml/mlrisc-lib/ppc/mltree/
/usr/lib/mlton/sml/mlrisc-lib/ppc/mltree/ppc.sml
/usr/lib/mlton/sml/mlrisc-lib/ppc/mltree/ppcPseudoInstr.sig
/usr/lib/mlton/sml/mlrisc-lib/ppc/ppc.mdl
/usr/lib/mlton/sml/mlrisc-lib/ppc/ra/
/usr/lib/mlton/sml/mlrisc-lib/ppc/ra/ppcRegAlloc.sml
/usr/lib/mlton/sml/mlrisc-lib/ppc/ra/ppcRewrite.sml
/usr/lib/mlton/sml/mlrisc-lib/ppc/ra/ppcSpillInstr.sml