Re: Mayor crunch: COFF Formats
well excuuuuuuuuuuuuuse me for trying to help - i thought this list was about
aiding fellow programmers out with their problems - forgive me if the answer i
gave was overstating the obvious
At 12:12 PM 4/18/00 GMT, you wrote:
>> >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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>
>
>
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