ack/mach/i86/libem/sli.s

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.sect .text; .sect .rom; .sect .data; .sect .bss
.sect .text
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.define .sli
! #bytes in ax
.sli:
pop dx ! return address
cmp ax,2
jne 1f
pop ax
pop cx
sal ax,cl
push ax
jmp dx
1:
cmp ax,4
jne 9f
pop cx
jcxz 2f
pop ax
pop bx
3:
sal ax,1
rcl bx,1
loop 3b
push bx
push ax
2:
jmp dx
9:
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.extern EODDZ
.extern .trp
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mov ax,EODDZ
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push dx
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jmp .trp