ack/mach/i86/libem/adi.s

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.sect .text; .sect .rom; .sect .data; .sect .bss
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.define .adi
! #bytes in cx , top of stack in ax
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.sect .text
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.adi:
pop bx ! return address
cmp cx,2
jne 1f
pop cx
add ax,cx
jmp bx
1:
cmp cx,4
jne 9f
pop dx
pop cx
add ax,cx
pop cx
adc dx,cx
push dx
jmp bx
9:
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.extern EODDZ
.extern .trp
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mov ax,EODDZ
push ax
jmp .trp