33 lines
411 B
ArmAsm
33 lines
411 B
ArmAsm
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.define .dvu
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.sect .text
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.dvu:
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LDMFD R12<,{R0,R1}
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STMFD R12<,{R4}
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CMP R0,#0
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BEQ divbyzero
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MOV R2,#0
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MOV R3,#0
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MOV R4,#32
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DVU11:
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SUB.S R4,R4,#1
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LDMFD.EQ R12<,{R4}
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MOV.EQ R15,R14
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MOV.S R1,R1,ASL #1
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BPL DVU11
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DVU22:
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MOV.S R1,R1,ASL #1
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ADC R2,R2,R2
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CMP R2,R0
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SUB.CS R2,R2,R0
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ADC R3,R3,R3
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SUB.S R4,R4,#1
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BNE DVU22
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LDMFD R12<,{R4}
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MOV R15,R14
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divbyzero:
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MOV R0,#6
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STMFD R12<,{R0}
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BAL _EmTrp
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