xorBytes(dst, a, b *byte, n int) TEXT ·xorBytes(SB), NOSPLIT, $0 MOVD dst+0(FP), R3 // R3 = dst MOVD a+8(FP), R4 // R4 = a MOVD b+16(FP), R5 // R5 = b MOVD n+24(FP), R6 // R6 = n CMPU R6, $64, CR7 // Check if n ≥ 64 bytes MOVD R0, R8 // R8 = index CMPU R6, $8, CR6 // Check if 8 ≤ n < 64 bytes BLE CR6, small // <= 8 BLT CR7, xor32 // Case for 32 ≤ n < 64 bytes // Case for n ≥ 64 bytes preloop64: SRD $6, R6, R7 // Set up loop counter MOVD R7, CTR MOVD $16, R10 MOVD $32, R14 MOVD $48, R15 ANDCC $63, R6, R9 //...