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Re: nptl/tst-thread-exit-clobber failure on armv7l-*-linux-gnueabihf

From: Florian Weimer <fweimer at redhat dot com>
To: Szabolcs Nagy <Szabolcs dot Nagy at arm dot com>
Cc: "libc-alpha\@sourceware.org" <libc-alpha at sourceware dot org>, nd <nd at arm dot com>
Date: Tue, 29 Jan 2019 13:57:40 +0100
Subject: Re: nptl/tst-thread-exit-clobber failure on armv7l-*-linux-gnueabihf
References: <87d0ogsjtu.fsf@oldenburg2.str.redhat.com> <ed20fb0c-3684-6020-af3d-7df1fedec9ac@arm.com>

* Szabolcs Nagy:

> the arm _dl_runtime_resolve code does not seem to preserve fp regs,
> i'm not sure why that works, but we should look out for gcc-9 changes
> that may start using fp regs in the arm dynamic linker.

i386 has a test case for that, using objdump --disassemble.  See
sysdeps/i386/tst-ld-sse-use.sh.  It may be possible to reuse some ideas
from it.

Thanks,
Florian

References:
- nptl/tst-thread-exit-clobber failure on armv7l-*-linux-gnueabihf
  - From: Florian Weimer
- Re: nptl/tst-thread-exit-clobber failure on armv7l-*-linux-gnueabihf
  - From: Szabolcs Nagy

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