[U-Boot-Users] Changing u-boot relocation scheme

[vb]

On Thu, Jul 24, 2008 at 9:57 AM, Haavard Skinnemoen
<haavard.skinnemoen at atmel.com> wrote:
> Kenneth Johansson <kenneth at southpole.se> wrote:
>> you have to
>> read the gcc code to understand what the -mrelocatable option really do.
>
> Plus it's only defined for PowerPC. What do we do on the 11 other
> architectures?
>
> We could build u-boot as a shared library I guess, but that feels a bit
> weird...
>

I ran a quick experiment with -mrelocate, compiled a module with it
and then objdump -D its contents, it seems to do exactly what I wanted
- stores addresses of pointers to adjust into the fixit section.

I guess the least intrusive alternative would be to compile the ported
code with this option, and then add a check to the u-boot function
dealing with GOT adjustments to see if the fixit section is nonempty.
If so - relocate .fixit in addition to GOT.

But as you pointed out, this would work on ppc only (with a 'good'
compiler), and still remains to be proven, I will get to it a bit
later.

cheers,
/vb

> Haavard
>
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