Re: Mayor crunch: COFF Formats
> >have you tried wotsit's? i use them to give me the codes to decoding odd
>file formats - here is the main address:
> >
> >http://www.wotsit.org/search.asp
> >
> >and here is the page for COFF format:
> >
> >http://www.delorie.com/djgpp/doc/coff/
> >
> >does that qualify me for my free copy???
>
>Hell, if a guy so intelligent as our friend Mike didn't check wotsit's then
>I should be able to qualify with this:
>
>http://www.ask.com/main/askjeeves.asp?
>
>Whateeya say, pal! 8^) Mooo?
>
>-- Brian
I didn't say I needed "general" info on COFF formats,I'm producing compilers
you know,but there's some complex operations wich seem simple to
implement,yet are very tricky.
I might have to use ELF instead of COFF if COFF don't support what I wanna
do.
And,I sayed i'd mail DJ about it,or the guy from ALINK,so that must mean I
do know about the DJGPP ref to COFF and the link to it.
I have coff.h aswell, and, I read lots of MSDN texts on COFFs and COMDAT
packed functions last night.
But what I wanna do,has *never* being done before,and is essential for
Dynamic code constructs.
I won't explain what it is,since you won't know the awnser (I'm pretty sure
you won't...).
I can say however,it's merely changing COFF contents (and library files)
dynamically at link-time.
I need to store and add data to specific code clusters in certain
COMDATs,yet I won't know where that code is located after compilation into
.obj files, and I *have* to get a hold on the offsets of certain code
constructs,dissassemble them,change them,and then "tape" everything into an
enhanced COFF file again to finally link with the rest of the U4IA++
generated COFF files.
Since the COFF could be made with VC++,DJGPP,etc,I won't know how the
compiler stores these data structures,and where.
So I need to find out,if I can't,I'm gonna have to find a way to call
functions by there address alone,without any type info or parameter data.
Like,I would get:
54545
from a map file,and I would have to call a random function at that address
above,with randmom parameters,wich I won't know since they are stripped.
Mike The Spike
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