PATCH: Fix prelink for mips

[H . J . Lu]

On Thu, Jan 17, 2002 at 02:51:35PM -0800, Ulrich Drepper wrote:
> "H . J . Lu" <hjl@lucon.org> writes:
> 
> > Here is a patch to make trunk to compile for mips. I looked at the
> > prelink on mips. I don't think the generic prelink code will work for
> > mips. When one day I find time, I will implement quickstart for mips. 
> > That means mips will have a very different dl-conflict.c. I also need
> > to change the structure of the prelink command for mips if I don't
> > want to start from the scratch. For the time being, this is the best
> > I can do.
> 
> I don't see why this patch is *necessary*.  You should have no
> problems compiling and using ld.so on MIPS since the code should be
> portable and if the applications are not prelinked, the new code isn't
> called.

Some patch is necessary since mips doesn't have elf_machine_rela. You
can define a dummy elf_machine_rela in sysdeps/mips/dl-machine.h. But
...

> 
> Whether or not it can be implemented on MIPS is another question.
> Prelinking has advantages over SGI's quickstart so it's certainly
> desirable to try implementing preload.  If this is not possible we
> still can move the file or make other changes which allow using it in
> all situations.  It should not be necessary today, though.

The problem is the MIPS ABI is written for quickstart. It is very
different from other ELF ABIs. I don't believe we can implement
prelink with that ABI. However, I do believe we can implement
quickstart similar to prelink. As long as we don't change the MIPS
ABI, mips can't use the current elf/dl-conflict.c. But I don't see
we should change elf/dl-conflict.c just for mips. I prefer to have
a dl-conflict.c specific to mips.


H.J.