Re: [Nasm-devel] Re: [Nasm-users] multisection example...

[Jacques M. <jac...@gm...>]

I'd like to retrieve a section size (in fact, multiple sections size)
from another section (which relocated the other sections). Is
section.<secname>.start supposed to be the solution? Should we,
instead, do this:

section mysection
mysectionsize: dd $ - section.mysection.start

And later user [mysectionsize] ? Will I be able to access it from
another section without some weird %define calculations?


On 11/13/05, anonymous coward <nas...@ya...> wrote:
> Frank,
> > > section mysection
> > > mysectionsize equ $ - section.mysection.start
> > >
> > > This will tell me section.mysection.start wasn't defined prior to its=
 use...
> > >
> > > What's wrong?
> >
> > Dunno. I can confirm that it happens. I *think* you're doing everything
> > right. If I add the "-O" switch, the error message changes to "invalid
> > operand type". I suspect a bug. I'll pass this on to the developer's
> > list, and see if anyone has any ideas...
>
> The section.<name>.start label is defined by bin_define_section_labels()
> in outbin.c. However, that function isn't called until after the second
> pass has been completed -- see line 1227.
>
> As a result, with the traditional two passes, EQU can't find the label
> during the first pass. And since EQU's operand is a critical expression
> you get the "symbol `<name>` not defined before use" error.
>
> With additional passes you get the "invalid operand type" warning; it
> happens to be the first of the two in parser.c, in line 690.
>
>
>
> __________________________________
> Yahoo! FareChase: Search multiple travel sites in one click.
> http://farechase.yahoo.com
>
>
> -------------------------------------------------------
> SF.Net email is sponsored by:
> Tame your development challenges with Apache's Geronimo App Server. Downl=
oad
> it for free - -and be entered to win a 42" plasma tv or your very own
> Sony(tm)PSP.  Click here to play: http://sourceforge.net/geronimo.php
> _______________________________________________
> Nasm-users mailing list
> Nas...@li...
> https://lists.sourceforge.net/lists/listinfo/nasm-users
>


--
Jacques Mony
Programmeur-Analyste
Les services conseils Syst=E9matix inc.