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