1TEXT mpdigdiv(SB),$0 2 3 MOVL dividend+0(FP),BX 4 MOVL 0(BX),AX 5 MOVL 4(BX),DX 6 MOVL divisor+4(FP),BX 7 MOVL quotient+8(FP),BP 8 XORL CX,CX 9 CMPL DX,BX /* dividend >= 2^32 * divisor */ 10 JHS _divovfl 11 CMPL BX,CX /* divisor == 0 */ 12 JE _divovfl 13 DIVL BX /* AX = DX:AX/BX */ 14 MOVL AX,0(BP) 15 RET 16 17 /* return all 1's */ 18_divovfl: 19 NOTL CX 20 MOVL CX,0(BP) 21 RET 22