ref: e3ad3d6968f4fd4cbb325e081ac9027d24f01316
dir: /sys/src/libc/arm64/main9p.s/
TEXT _mainp(SB), 1, $0 SUB $16, SP MOV $setSB(SB), R28 MOV R0, _tos(SB) MOV $_profmain(SB), R0 MOV $0, R30 B _callmain(SB) TEXT _callpc(SB), 1, $-4 MOV 0(SP), R0 TEXT _saveret(SB), 1, $-4 TEXT _savearg(SB), 1, $-4 RETURN