Re: Embedding stuff in ELF section of compiled module

[Matt Wette <matt.wette@gmail.com>]

On 11/9/24 7:15 AM, Olivier Dion wrote:
> Hi,
>
> TLDR; Is there a way to embed a bytevector into a ELF section of a
> compiled module (.go)?
>
> I have a case where I want to generate bytevectors that follow an ABI
> for event description of static tracepoints.  I would like this
> bytevector to be put into a know ELF section of the compiled module so
> that external tools can reference it by parsing the ELF file,
> i.e. without running Guile.  I personnaly don't care about none-ELF
> systems, so I'm fine if this solution is Linux only.
>
> I guess this is similar to embedding something else like an audio/image
> for a video game.
>
> So, is there any way for adding section to the compiled ELF, something
> along like:
>
>   (embed-bytevector ".my_section"
>           #vu8(bytes ...))
>
> If not, I wonder if this is something that could be appreciated for
> other users as well?
>
> Thanks,
> Olivier
>

You could look at `objcopy' to add a section to the .go file (outside of 
Guile).

Otherwise, dig into the code in share/guile/3.0/system/vm/elf.scm.

Matt