ack/mach/i86/libem/ngi.s

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.sect .text; .sect .rom; .sect .data; .sect .bss
.sect .text
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.define .ngi
! #bytes in ax
.ngi:
pop bx ! return address
cmp ax,2
jne 1f
pop cx
neg cx
push cx
jmp bx
1:
cmp ax,4
jne 9f
pop dx
pop ax
neg ax
neg dx
sbb ax,0
push dx
push ax
jmp bx
9:
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.extern EODDZ
.extern .trp
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mov ax,EODDZ
push ax
jmp .trp