Re: RosAsm injects extra bytes into your data

\o//annabee wrote:
> På 28 Apr 2005 15:18:11 -0700, skrev Alex McDonald
> <alex_mcd@xxxxxxxxxxxxxxx>:

>
> We know you have no clue about assmebly,

Really? And you are...?

> and therefore its really strange
> to see
> you post anything in asm ng, but that you cant even understand what a

> label is ????
>
> A label is a symbolic representation of a ADDRESS. A memory adress.
> Not anything else.

Aha; a label in RosAsm is typeless, and isn't attached to the object
that follows... I see. Hence all the B$s W$s and D$s peppered all over
the code. So this;

[ByteData: B§ ? ? ? MyLastData: ? ? ? ? ]

is legal syntax? What byte offset from ByteData does it have? 3? How
long is this uninitialised "data"? 7 bytes?

How do you construct something like this in RosAsm? (pseudo-asm);

string dw end-start
start db "A string of some length"
end equ *

Is this the equivalent?

[string: w$ (end-start) start: "A string of some length" end: ]

Can I calculate on labels in different sections?

[ datalabel: ... ]
codelabel: mov eax, codelabel-datalabel

>
> >> This is why there is a dummy Data, in the example.
> >
> > Come on, get with the plan, Betov. Dummy data? Since when did an
> > assembler that can control every bit and byte in the PE need dummy
> > data? How is this enlightening for the novice? It's bad code,
period.
>
> Its redundant code. The memory is allready cleared.

Now it's suddenly redundant. Ah well. So when does this

[ByteData: B§ ? ? ? ? ? ? ? MyLastData: D§ ?]

get cleared?

>
> >> There is no Structure.
>
> > Eh? Then what are these 11 bytes? A random placement of data? Are
you
> > suggesting that MyLastData isn't 7 bytes beyond ByteData? Just in
case
> > you forgot what you wrote;
> >
> > [ByteData: B§ ? ? ? ? ? ? ? MyLastData: D§ ?]
>
> Its several reservation of bytes in the dynamic datasegment,
> initalized at runtime. The lables can be placed anywhere, and will
then be
> used
> by the code to access the data at diffrent addresses.

What's a dynamic datasegment? What's initalises it at runtime, as
you've just said it's redundant to clear it at run time?

> >
> > RosAsm is a mighty strange assembler if that isn't a structure.
>
> :))))) oh lolly...it never ends.

What specifically?

>
> >> There is no Structure.
>
> > That's what the entire discussion in this thread has been about.
>
> Nope. Its a thread about data.

Nonsense. It's a thread about optimally aligning structures; it's
nothing to do with data at all. Betov's examples given for RosAsm don't
contain any data, just uninitialised words and bytes.

--
Regards
Alex McDonald

.

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