ref: 4983adfa2cd403eda22d862917c2ff5ed35b48b3
dir: /sys/src/libc/arm64/memset.s/
TEXT memset(SB), $-4 MOVBU c+8(FP), R1 MOVWU n+16(FP), R2 MOV R0, R5 ADD R0, R2, R3 BIC $15, R2, R4 CBZ R4, _loop1 ADD R0, R4, R4 ORR R1<<8, R1 ORR R1<<16, R1 ORR R1<<32, R1 _loop16: MOVP R1, R1, (R5)16! CMP R4, R5 BNE _loop16 _loop1: CMP R3, R5 BEQ _done MOVBU R1, (R5)1! B _loop1 _done: RETURN