Re: in-kernel linking issues

[Richard Henderson <rth@twiddle.net>]

On Sat, Nov 16, 2002 at 04:47:55PM +1100, Rusty Russell wrote:
> [ Sorry for the delayed reply, I only got this mail via kernel.org: did you
>   get a bounce from rusty@rustcorp.com.au? ]

Nope.

> Thanks for this.  It adds even more weight to your ET_DYN argument as well.
> I'll need to play with that linker script some more (on PPC, binfmt_misc.o
> is 13000 bytes, binfmt_misc.so becomes 156128 bytes 8)

I know what this is -- max architectural page size of 64k.
The linker is trying to make the file offset congruent to
the address mod 64k.  Which adds a *lot* of padding.

Should be fixable by using the -N option.

> There's still the issue of PPC and PPC64 which can only jump 24-bits away,
> and so currently insert trampolines which have to be allocated with the
> module, but that should be no uglier than currently.

I would hope that this would be handled by the normal .plt
creation.  We'll see.



r~