ref: a9d09ee1f1eccc3d8cef3f6fe593f96bec8f855f dir: /sys/src/ape/lib/ap/amd64/main9.s/
GLOBL _tos(SB), $8 TEXT _main(SB), 1, $0 MOVQ AX, _tos(SB) MOVQ $_apemain(SB), RARG PUSHQ RARG PUSHQ $0 JMPF _callmain(SB)