ref: 4cd46e8601a04d2dc4fa91f95f5be4be14943c96 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)