ref: 0efcfcc60ca6d1d99bdea89efc6c1ffcc5df3d3d dir: /sys/src/libc/power/argv0.s/
GLOBL argv0(SB), $4 GLOBL _tos(SB), $4 GLOBL _privates(SB), $4 GLOBL _nprivates(SB), $4