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Re: IFUNCs used by libc.so.6 internally on x86-64
- From: Joseph Myers <joseph at codesourcery dot com>
- To: Stefan Liebler <stli at linux dot vnet dot ibm dot com>
- Cc: <libc-alpha at sourceware dot org>
- Date: Thu, 1 Jun 2017 13:36:43 +0000
- Subject: Re: IFUNCs used by libc.so.6 internally on x86-64
- Authentication-results: sourceware.org; auth=none
- References: <35ad727a-a910-b5a3-0829-905e3bf0abcf@redhat.com> <7df1dcd4-e8e0-5966-92d9-5156d09cd6b6@linux.vnet.ibm.com>
On Wed, 31 May 2017, Stefan Liebler wrote:
> At least for s390x, using internal IFUNCs leads to a segfault while linking
> libc.so if older binutils (before 2.26) are used.
> Are internal IFUNCs supported on all architectures?
Very few architectures have any sort of IFUNC support in binutils or their
ABIs at all.
--
Joseph S. Myers
joseph@codesourcery.com