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| author | Nick Clifton <nickc@redhat.com> | 2018-03-09 14:37:36 +0000 |
|---|---|---|
| committer | Nick Clifton <nickc@redhat.com> | 2018-03-09 14:37:36 +0000 |
| commit | f657f8c4a1dc0ac69b16b1dc6eacbf5286f1f0a0 (patch) | |
| tree | cd660cfaf14687bc4785722975206591959142d8 /bfd/elfnn-aarch64.c | |
| parent | 9bd8e0b072ad5fc5b8956fd5d3e51dc5a9b0f236 (diff) | |
| download | gdb-f657f8c4a1dc0ac69b16b1dc6eacbf5286f1f0a0.zip gdb-f657f8c4a1dc0ac69b16b1dc6eacbf5286f1f0a0.tar.gz gdb-f657f8c4a1dc0ac69b16b1dc6eacbf5286f1f0a0.tar.bz2 | |
Fix Sparc, s390 and AArch64 targets so that they can handle relocs against ifunc symbols found in note sections.
Following on from PR 22929, I have found the same problem exists with
other ifunc supporting targets too. Plus see this link for the bug
being reported against the s390x binutils for Fedora rawhide:
https://bugzilla.redhat.com/show_bug.cgi?id=1553705
So I am going to check in the patch below which applies the same
change that H.J. made for the x86_64 target to the other affected
targets. (Specifically: S390, AArch64 and Sparc). Plus it adds a new
test to the linker testsuite to make sure that this problem stays
fixed.
bfd * elf64-s390.c (elf_s390_relocate_section): Move check for
relocations against non-allocated sections to before the code that
handles ifunc relocations.
* elf32-s390.c (elf_s390_relocate_section): Likewise.
* elfnn-aarch64.c (elfNN_aarch64_final_link_relocate): Treat
relocs against IFUNC symbols in non-allocated sections as relocs
against FUNC symbols.
* elfxx-sparc.c (_bfd_sparc_elf_relocate_section): Likewise.
ld * testsuite/ld-ifunc/ifuncmod5.s: New test. Checks that targets
that support IFUNC symbols can handle relocations against those
symbols in NOTE sections.
* testsuite/ld-ifunc/ifuncmod5.d: New file: Driver for the new
test.
* testsuite/ld-ifunc/ifunc.exp: Run the new test.
Diffstat (limited to 'bfd/elfnn-aarch64.c')
| -rw-r--r-- | bfd/elfnn-aarch64.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/bfd/elfnn-aarch64.c b/bfd/elfnn-aarch64.c index beef91a..c1986b7 100644 --- a/bfd/elfnn-aarch64.c +++ b/bfd/elfnn-aarch64.c @@ -5110,6 +5110,11 @@ elfNN_aarch64_final_link_relocate (reloc_howto_type *howto, if ((input_section->flags & SEC_ALLOC) == 0) { + /* If this is a SHT_NOTE section without SHF_ALLOC, treat + STT_GNU_IFUNC symbol as STT_FUNC. */ + if (elf_section_type (input_section) == SHT_NOTE) + goto skip_ifunc; + /* Dynamic relocs are not propagated for SEC_DEBUGGING sections because such sections are not SEC_ALLOC and thus ld.so will not process them. */ @@ -5305,6 +5310,7 @@ bad_ifunc_reloc: } } + skip_ifunc: resolved_to_zero = (h != NULL && UNDEFWEAK_NO_DYNAMIC_RELOC (info, h)); |