ref: 6dc60ec3a95e88d30b487d13271b042c96eb9532 dir: /sys/src/libc/power/main9.s/
TEXT _main(SB), 1, $0 SUB $8, R1 MOVW $setSB(SB), R2 MOVW R3, _tos(SB) MOVW $main(SB), R3 MOVW R0, LR MOVW $_callmain(SB), R4 MOVW R4, CTR BR (CTR)