ref: 8f68e89a895fb05b51429b02b4dd43ba65e3abfd dir: /sys/src/libc/arm64/main9.s/
TEXT _main(SB), 1, $0 SUB $16, SP MOV $setSB(SB), R28 MOV R0, _tos(SB) MOV $main(SB), R0 MOV $0, R30 B _callmain(SB)