040000 tree 07f7e34a74d328b53afcd50ed014e737e0cd3fce	arc
040000 tree 6553a29afc910028176a5e8fba38247de1d6cf32	arm
100644 blob b03f81f959e4e9985f59f62aa040cce6450a52b1	cpu.h
040000 tree 56d49cac0be76d4a5b3097bdfdd8131ef47e3054	nios2
040000 tree 4d6d844e2936f341b763a65e7d8a500301af2af4	posix
040000 tree 82531080dbc36beba83cf378906dea18f2a8186e	riscv32
040000 tree 99f85034ea7a360bd5dca8c97895535df3020850	x86
040000 tree 86ef5a64655e2d55eac887475614651b8c8a6aa0	xtensa