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Subject: Re: executable = exe + data
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From: Sam Steingold <sds AT gnu DOT org>
In-Reply-To: <43B7186A.8CE0CB91@dessent.net> (Brian Dessent's message of "Sat, 31 Dec 2005 15:46:50 -0800")
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Date: Sun, 01 Jan 2006 12:50:52 -0500
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> * Brian Dessent <oevna AT qrffrag DOT arg> [2005-12-31 15:46:50 -0800]:
>
> Sam Steingold wrote:
>
>> Is it possible?
>> 
>> simply put, it it possible to write something like this:
>> 
>> int main () {
>>   size_t my_length;
>>   <some magic>
>>   printf("exe size=%lld\n",my_length);
>>   return 0;
>> }
>
> All the methods mentioned so far are essentially hacks working against
> the linker, doing stuff behind its back.  Why not go with the flow?
> Put your data in its own section, and write a linker script to handle
> that section in the desired way.  You can access the address by
> referencing the linker script variables in your source code.  See
> section 3 of the ld manual, particularly 3.5.3.  This should work on
> any platform that uses ld.

the problems with this is that the "data" that is being appended is not
known at link time and appending it may not require C tools (ld/gcc &c).


-- 
Sam Steingold (http://www.podval.org/~sds) running w2k
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Ph.D. stands for "Phony Doctor"  - Isaak Asimov, Ph.D.


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