ref: ec73849b6936d839410ccb239d14b2f7c7ca3d6f dir: /sys/src/ape/lib/ap/mips/main9.s/
GLOBL _tos(SB), $4 TEXT _main(SB), 1, $0 ADD $-8, R29 MOVW $setR30(SB), R30 MOVW R1, _tos(SB) MOVW $_apemain(SB), R1 MOVW $0, R31 JMP _callmain(SB)