[rtems commit] libdl: Add support to import base image TLS symbols

[Sebastian Huber]

On 14.09.23 10:51, Chris Johns wrote:
> On 14/9/2023 5:58 pm, Sebastian Huber wrote:
>> On 14.09.23 09:38, Chris Johns wrote:
>>>>> The issue I faced was no score interface to get the TLS base for a thread to
>>>>> determine a symbol's offset. If we had that and something to say if TLS is
>>>>> supported libdl would be easy to fix.
>>>> Why don't we add this interface if it simplifies things?
>>> Yes please, that would be good. I do not know the TSL support well enough to do
>>> a decent job of it.
>> Which interface do you need?
> A define that says TLS is support for an arch?
> 
> A call that returns the base address for an arch? I have added some in libdl:
> 
> https://git.rtems.org/rtems/tree/cpukit/libdl/rtl-tls.c
> 
> however having this in score would mean a new arch does not break libdl.

Yes, this should be definitely added to the CPU port. What is the 
purpose of rtems_rtl_tls_get_base()? It seems to be unused.

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