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

[Kenneth Johansson]

On Thu, 2008-07-24 at 11:26 -0700, vb wrote:
> On Thu, Jul 24, 2008 at 11:09 AM, Kenneth Johansson
> <kenneth at southpole.se> wrote:
> >
> 
> >
> > I have run u-boot with everything compiled with -mrelocatable and normal
> > relocation fixup code removed so I know it works fine. So consider it
> > proven. But since it apparently is a problem in some situation the best
> > is probably to make it a configuration option.
> >
> >
> 
> From what I saw in my limited experiment, there is no code (as in CPU
> instructions) generated by gcc, just a data section containing
> offsets.
> 
> Maybe the linker is supposed to add some code to the startup file to
> handle that section in case it is invoked with -mrelocatable (on't
> know if it would recognize this an option) or detects .fixup section
> in the .o files being linked. It is a mute point for embedded
> development anyways.

I think the code exist in libgcc __eabi_convert() but code already exist
in u-boot at least in several start.S files. 

> I *think* the only thing missing is a simple function to scan the
> .fixup table and fix the pointers after relocation.

The code should be there
find . -name "*.S" | xargs grep FIXUP_TABLE