26 lines
368 B
ArmAsm
26 lines
368 B
ArmAsm
.sect .text; .sect .rom; .sect .data; .sect .bss
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.sect .text
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.define .mli4
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yl=2
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yh=4
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! x * y
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! xl in ax
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! xh in dx
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.mli4:
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mov bx,sp
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push dx
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mov cx,ax
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mul yh(bx) ! xl*yh
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pop dx
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push ax
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mov ax,dx
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mul yl(bx) ! xh * yl
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pop dx
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add dx,ax ! xh*yl+xl*yh
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mov ax,cx
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mov cx,dx
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mul yl(bx) ! xl*yl
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add dx,cx
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ret 4
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