ref: 8c097ae84a500eae9c8e4ee21b7b3ea8f8d23259 dir: /sys/src/libc/power/argv0.s/
GLOBL argv0(SB), $4 GLOBL _tos(SB), $4 GLOBL _privates(SB), $4 GLOBL _nprivates(SB), $4