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| author | Alan Modra <amodra@gmail.com> | 2024-11-26 08:24:19 +1030 |
|---|---|---|
| committer | Alan Modra <amodra@gmail.com> | 2024-11-27 08:52:24 +1030 |
| commit | 758a2290dbdf0d6d6c148c6cf25b2bcfd7a5b84f (patch) | |
| tree | 288a1f6f720a3ce25bae58a9e607edb1fb5fd35f /ld | |
| parent | ed489bf157498b9f0a68cd288caf57b820ba89e1 (diff) | |
| download | gdb-binutils-2_42-branch.zip gdb-binutils-2_42-branch.tar.gz gdb-binutils-2_42-branch.tar.bz2 | |
PR32387 ppc64 TLS optimization bug with -fno-plt codebinutils-2_42-branch
The inline plt code emitted by gcc is incompatible with the
linker/ld.so --tls-get-addr-optimize scheme. This is the runtime
optimisation where the first call to __tls_get_addr results in
__tls_get_addr updating the tls_index pair, then the special linker
stub using that to short-circuit second and subsequent calls for a
given tls symbol. Enabled by default when the linker sees
__tls_get_addr_opt is preseent, and enabled in ld.so when DT_PPC64_OPT
has PPC64_OPT_TLS set. Note that this is distinct from link-time tls
optimisation.
PR 32387
* elf64-ppc.c (ppc64_elf_check_relocs): Disable tls_get_addr_opt
on detecting inline plt calls to __tls_get_addr.
(cherry picked from commit 1686dc7079f1c03bdaffd2f779b92aa2b7ad97b5)
Diffstat (limited to 'ld')
0 files changed, 0 insertions, 0 deletions