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[Bug ld/26656] power10 libstdc++.so segfault in __cxxabiv1::__cxa_throw
From: |
cvs-commit at gcc dot gnu.org |
Subject: |
[Bug ld/26656] power10 libstdc++.so segfault in __cxxabiv1::__cxa_throw |
Date: |
Thu, 24 Sep 2020 02:45:51 +0000 |
https://sourceware.org/bugzilla/show_bug.cgi?id=26656
--- Comment #3 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot
gnu.org> ---
The binutils-2_35-branch branch has been updated by Alan Modra
<amodra@sourceware.org>:
https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=6f9a6c28850f6839ff61af22c277b2abbf7895da
commit 6f9a6c28850f6839ff61af22c277b2abbf7895da
Author: Alan Modra <amodra@gmail.com>
Date: Tue Sep 22 22:51:42 2020 +0930
PR26656, power10 libstdc++.so segfault in __cxxabiv1::__cxa_throw
This adds missing support for a power10 version of the __tls_get_addr
call stub implementing DT_PPC64_OPT PPC64_OPT_TLS. Without this,
power10 code using __tls_get_addr fails miserably at runtime unless
the --no-tls-get-addr-optimize option is given.
PR 26656
* elf64-ppc.c (plt_stub_size): Add "odd" param. Use it with
size_power10_offset rather than calculating from start of stub.
Add size for notoc tls_get_addr_opt stub.
(plt_stub_pad): Add "odd" param, pass to plt_stub_size.
(build_tls_get_addr_head, build_tls_get_addr_tail): New functions.
(build_tls_get_addr_stub): Delete.
(ppc_build_one_stub): Use a temp for htab->params->stub_bfd.
Emit notoc tls_get_addr_opt stub. Move eh_frame code to
suit. Adjust code to use bfd_tls_get_addr_head/tail in place
of build_tls_get_addr_stub.
(ppc_size_one_stub): Size notoc tls_get_addr_opt stub.
Adjust plt_stub_size and plt_stub_pad calls. Correct "odd"
when padding stub. Size eh_frame for notoc stub too.
Correct lr_restore value.
(ppc64_elf_relocate_section): Don't skip over first insn of
notoc tls_get_addr_opt stub.
(cherry picked from commit 294338867c268b6da43327b6cbe70e746bff1a04)
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- [Bug ld/26656] New: power10 libstdc++.so segfault in __cxxabiv1::__cxa_throw, amodra at gmail dot com, 2020/09/23
- [Bug ld/26656] power10 libstdc++.so segfault in __cxxabiv1::__cxa_throw, amodra at gmail dot com, 2020/09/23
- [Bug ld/26656] power10 libstdc++.so segfault in __cxxabiv1::__cxa_throw, amodra at gmail dot com, 2020/09/23
- [Bug ld/26656] power10 libstdc++.so segfault in __cxxabiv1::__cxa_throw, cvs-commit at gcc dot gnu.org, 2020/09/23
- [Bug ld/26656] power10 libstdc++.so segfault in __cxxabiv1::__cxa_throw,
cvs-commit at gcc dot gnu.org <=
- [Bug ld/26656] power10 libstdc++.so segfault in __cxxabiv1::__cxa_throw, amodra at gmail dot com, 2020/09/23
- [Bug ld/26656] power10 libstdc++.so segfault in __cxxabiv1::__cxa_throw, cvs-commit at gcc dot gnu.org, 2020/09/27
- [Bug ld/26656] power10 libstdc++.so segfault in __cxxabiv1::__cxa_throw, cvs-commit at gcc dot gnu.org, 2020/09/27