ref: b7a4dab54ab89f9cd62f3a31166cff553450cd28
dir: /sys/src/libc/spim/memccpy.s/
TEXT memccpy(SB), $0 MOVW R1, 0(FP) MOVW n+12(FP), R1 BEQ R1, ret MOVW s1+0(FP), R3 MOVW s2+4(FP), R2 MOVBU c+8(FP), R4 ADDU R1, R2, R5 l1: MOVBU (R2), R6 ADDU $1, R2 MOVBU R6, (R3) ADDU $1, R3 BEQ R4, R6, eq BNE R2, R5, l1 MOVW $0, R1 RET eq: MOVW R3, R1 ret: RET