diff options
| author | Alan Modra <amodra@gmail.com> | 2017-07-31 10:18:46 +0930 |
|---|---|---|
| committer | Alan Modra <amodra@gmail.com> | 2017-07-31 13:20:44 +0930 |
| commit | d44c746aedeb31aacd867edc2da30dedc1e63e15 (patch) | |
| tree | 2e8e6f68db504b37e84bfc8644321e4ccfc983c5 /bfd | |
| parent | 93e0a1eab1c7963d77513aa503b129ea03cd6d39 (diff) | |
| download | binutils-gdb-d44c746aedeb31aacd867edc2da30dedc1e63e15.tar.gz | |
PR 21847, PowerPC64 --plt-localentry again
This makes ld warn about --plt-localentry if a version of glibc
without the necessary ld.so checks is detected, and revises the
documentation.
bfd/
* elf64-ppc.c (ppc64_elf_tls_setup): Warn on --plt-localentry
without ld.so checks.
gold/
* powerpc.cc (Target_powerpc::scan_relocs): Warn on --plt-localentry
without ld.so checks.
ld/
* ld.texinfo (plt-localentry): Revise.
Diffstat (limited to 'bfd')
| -rw-r--r-- | bfd/ChangeLog | 5 | ||||
| -rw-r--r-- | bfd/elf64-ppc.c | 6 |
2 files changed, 11 insertions, 0 deletions
diff --git a/bfd/ChangeLog b/bfd/ChangeLog index 41c935dd0d8..9839a3487f5 100644 --- a/bfd/ChangeLog +++ b/bfd/ChangeLog @@ -1,3 +1,8 @@ +2017-07-31 Alan Modra <amodra@gmail.com> + + * elf64-ppc.c (ppc64_elf_tls_setup): Warn on --plt-localentry + without ld.so checks. + 2017-07-29 Alan Modra <amodra@gmail.com> PR 21847 diff --git a/bfd/elf64-ppc.c b/bfd/elf64-ppc.c index 5f3c79f8111..7f4f7b6b86f 100644 --- a/bfd/elf64-ppc.c +++ b/bfd/elf64-ppc.c @@ -8372,6 +8372,12 @@ ppc64_elf_tls_setup (struct bfd_link_info *info) --plt-localentry can cause trouble. */ if (htab->params->plt_localentry0 < 0) htab->params->plt_localentry0 = 0; + if (htab->params->plt_localentry0 + && elf_link_hash_lookup (&htab->elf, "GLIBC_2.26", + FALSE, FALSE, FALSE) == NULL) + info->callbacks->einfo + (_("%P: warning: --plt-localentry is especially dangerous without " + "ld.so support to detect ABI violations.\n")); htab->tls_get_addr = ((struct ppc_link_hash_entry *) elf_link_hash_lookup (&htab->elf, ".__tls_get_addr", |