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[RFC PATCH] ld/emulparams: elf32lriscv-defs: Add support tune the text segment start address

Nelson Chu nelson@rivosinc.com
Thu Dec 22 02:12:19 GMT 2022 
On Thu, Dec 22, 2022 at 4:15 AM Lad, Prabhakar
<prabhakar.csengg@gmail.com> wrote:
>
>> I think it should be similar to what nds32 did in the
>> ld/emulparams/nds32elf_linux.sh, but I'm not really sure how it works.
>> When should the DEFAULT_TEXT_START_ADDR be defined?  Maybe when
>> configure or make, not sure about that.  But at least I only see the
>> changes in nds32, all of the other targets won't do that, so this must
>> be a handy little trick, but there are always other ways to do the
>>
>DEFAULT_TEXT_START_ADDR needs to be exported in the shell before doing
>configure && make.. For example for testing I bbappended the binutils
>yocto recipe and exported the variable in do_configure() so that it
>picks up the new offset.

Thanks, that pretty clear to explain how this works.

> > same things - for example, what maskray said should be the general way
> > to do.  I don't have any opinion on this change, if it won't break the
> > general build, then probably acceptable.  Just that it seems need to
> > introduce the DEFAULT_TEXT_START_ADDR or whatever configure options,
> > so this isn't only be the riscv gnu ld's issue, this will also be the
> > issue of lld, so if the maintainers of lld already have some
> > suggestions, then it will definitely worth to referring to.
> >
> Is there a mailing list for lld so that we could include them in this
> mail thread (I couldn't find one)?

Not really sure which mailing list is the right place to discuss this
for llvm, I only know that they have a patch review system -
Phabricator.  But anyway, Maskray (Fangrui) is the lld maintainer, so
he is already here ;)


Thanks
Nelson
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