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- TEXT mpdigdiv(SB),$0
- MOVL dividend+0(FP),BX
- MOVL 0(BX),AX
- MOVL 4(BX),DX
- MOVL divisor+4(FP),BX
- MOVL quotient+8(FP),BP
- XORL CX,CX
- CMPL DX,BX /* dividend >= 2^32 * divisor */
- JHS _divovfl
- CMPL BX,CX /* divisor == 0 */
- JE _divovfl
- DIVL BX /* AX = DX:AX/BX */
- MOVL AX,0(BP)
- RET
- /* return all 1's */
- _divovfl:
- NOTL CX
- MOVL CX,0(BP)
- RET
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