ref: 17f7f6be4e1a316c0f5f26ff70e047aece4de2bc dir: /sys/src/libc/power64/main9.s/
TEXT _main(SB), 1, $-8 ADD $-16, R1 MOVD $0, R0 MOVD $setSB(SB), R2 MOVD RARG, _tos(SB) MOVD $main(SB), RARG MOVD R0, LR MOVD $_callmain(SB), R4 MOVD R4, CTR BR (CTR)