Subj : Re: What is being referenced here?
To   : borland.public.cpp.borlandcpp
From : Bob Gonder
Date : Mon Oct 18 2004 08:35 am

Stephen Jarowski wrote:

>Two questions (before I attempt to understand the code myself by
>debugging):
>
>What does the coder intend to happen with the call to F_PADD@ in
>this code:
>
>     mov dx, [bp-00Ah]
>     mov ax, [bp-00Ch]
>     mov cx, [bp+00Ch]
>     mov bx, [bp+00Ah]
>     call  far ptr F_PADD@
>     mov [bp-006h], dx
>     mov [bp-008h], ax

He's going to add cx:bx to dx:ax  with the result in dx:ax

>And what does he intend to happen with the call to F_PADA@ here:
>
>     xor cx, cx
>     mov bx, 4000h
>     mov dx, ss
>     lea ax, [bp-00Ch]
>     call far ptr F_PADA@

Pretty close to the above.
He's adding 0000:4000 to  ss:[bp-12]

In the first one, he's passing 2 32bit values which will be added and
normalized and returned.
In the second, he's passing 1 32bit value, and 1 address.  I think the
return will be that the address pointed to by the address will be
adjusted by the 32bit value.

BTW, a decent disassembler should translate all that into C for you.

.