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21 lines
153 B
ArmAsm
21 lines
153 B
ArmAsm
.global ___smulhi3
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___smulhi3:
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lda #0
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mult1: ldx <r4
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beq done
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lsr <r4
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bcc mult2
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clc
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adc <r5
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mult2: asl <r5
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bra mult1
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done: sta <r0
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rtl
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