ref: 490ebc54bb9b46a5719f059da6aef5b8b381eecf 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)