ref: a8f8de1cdeec7f9bee287c137b576e0249e8df82
dir: /sys/src/libmp/arm/mpvecadd.s/
TEXT mpvecadd(SB),$0 MOVW alen+4(FP), R4 MOVW b+8(FP), R5 MOVW blen+12(FP), R6 MOVW sum+16(FP), R7 MOVW $0, R8 MOVW R8, R3 CMP R8, R6 B.EQ _add1 SUB R6, R4, R4 _addloop1: MOVW.P 4(R0), R1 MOVW.P 4(R5), R2 CMP $1, R3 ADC.S R2, R1 ADC R8, R8, R3 MOVW.P R1, 4(R7) SUB.S $1, R6 B.NE _addloop1 _add1: CMP R8, R4 B.EQ _addend _addloop2: MOVW.P 4(R0), R1 ADD.S R3, R1 ADC R8, R8, R3 MOVW.P R1, 4(R7) SUB.S $1, R4 B.NE _addloop2 _addend: MOVW R3, (R7) RET