1 TEXT memccpy(SB), $0 2#define BDNZ BC 16,0, 3MOVW R3, s1+0(FP) 4 MOVW n+12(FP), R7 5 MOVW s2+4(FP), R4 6 MOVBZ c+11(FP), R5 7 CMP R7, $0 8 BEQ nf 9 MOVW R7, CTR 10 SUB $1, R3 11 SUB $1, R4 12l1: 13 MOVBZU 1(R4), R6 14 CMP R6, R5 15 MOVBZU R6, 1(R3) 16 BEQ eq 17 BDNZ l1 18nf: 19 MOVW $0, R3 20 RETURN 21eq: 22 ADD $1, R3 23 RETURN 24