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

[Milian Wolff]

On Montag, 7. Mai 2018 22:08:26 CEST Bert Wesarg wrote:
> 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?

See my follow-up mail, it doesn't compile.

> 2) Does the default model produces __tls_get_addr in the asm output?
> 
> I assume you answered only the second one?
> 
> Bert
> 
> > Thanks


-- 
Milian Wolff
address@hidden
http://milianw.de

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