Re: [Libunwind-devel] tls_model("initial-exec") attribute prevents dynamic loading of libunwind via dlopen()

[Bert Wesarg]

On Mon, May 7, 2018 at 9:27 PM, Milian Wolff <address@hidden> wrote:
> On Mittwoch, 2. Mai 2018 13:23:03 CEST Bert Wesarg wrote:
>> Dear Milian,
>>
>> I tried to remember why we choose the initial-exec model, but could
>> not found any reasons. By reading
>> https://www.akkadia.org/drepper/tls.pdf again, I would say
>> "local-exec" is the right way to go here. Which should be the default
>> for 'static' variables anyway. Can you please confirm, that this works
>> for you. Its just important, that there are no calls to
>> __tls_get_addr() in the asm output.
>
> No, with the default I do see __tls_get_addr in the asm output (i.e. matches
> in Gparser.o). So probably, the default isn't OK to be used everywhere.

Sorry, that were two questions:

1) Does "local-exec" works with dlopen for you?

2) Does the default model produces __tls_get_addr in the asm output?

I assume you answered only the second one?

Bert

>
> Thanks