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| author | H.J. Lu <hjl.tools@gmail.com> | 2011-01-06 18:45:05 +0000 |
|---|---|---|
| committer | H.J. Lu <hjl.tools@gmail.com> | 2011-01-06 18:45:05 +0000 |
| commit | 3db2e7dda697d71311d698f21d7c65b8ec1774ca (patch) | |
| tree | 673b7abbfab3b1b454a5d9677950f0a919ca83d1 /bfd/elf-ifunc.c | |
| parent | ccfc3d6e06d5b9d2ebd8b8e4239f1313e33f40ac (diff) | |
| download | gdb-3db2e7dda697d71311d698f21d7c65b8ec1774ca.zip gdb-3db2e7dda697d71311d698f21d7c65b8ec1774ca.tar.gz gdb-3db2e7dda697d71311d698f21d7c65b8ec1774ca.tar.bz2 | |
Handle STT_GNU_IFUNC symols when building shared library.
bfd/
2012-01-06 H.J. Lu <hongjiu.lu@intel.com>
PR ld/12366
PR ld/12371
* elf-ifunc.c (_bfd_elf_allocate_ifunc_dyn_relocs): Properly
handle symbols marked with regular reference, but not non-GOT
reference when building shared library.
* elf32-i386.c (elf_i386_gc_sweep_hook): Properly handle
local and global STT_GNU_IFUNC symols when building shared
library.
* elf64-x86-64.c (elf_x86_64_gc_sweep_hook): Likewise.
ld/testsuite/
2012-01-06 H.J. Lu <hongjiu.lu@intel.com>
PR ld/12366
PR ld/12371
* ld-ifunc/ifunc-10-i386.s: Add more tests.
* ld-ifunc/ifunc-10-x86-64.s: Likewise.
* ld-ifunc/ifunc-11-i386.s: Likewise.
* ld-ifunc/ifunc-11-x86-64.s: Likewise.
* ld-ifunc/ifunc-12-i386.d: New.
* ld-ifunc/ifunc-12-i386.s: Likewise.
* ld-ifunc/ifunc-12-x86-64.d: Likewise.
* ld-ifunc/ifunc-12-x86-64.s: Likewise.
* ld-ifunc/ifunc-13-i386.d: Likewise.
* ld-ifunc/ifunc-13-x86-64.d: Likewise.
* ld-ifunc/ifunc-13a-i386.s: Likewise.
* ld-ifunc/ifunc-13a-x86-64.s: Likewise.
* ld-ifunc/ifunc-13b-i386.s: Likewise.
* ld-ifunc/ifunc-13b-x86-64.s: Likewise.
Diffstat (limited to 'bfd/elf-ifunc.c')
| -rw-r--r-- | bfd/elf-ifunc.c | 27 |
1 files changed, 23 insertions, 4 deletions
diff --git a/bfd/elf-ifunc.c b/bfd/elf-ifunc.c index 760fc26..17b23c2 100644 --- a/bfd/elf-ifunc.c +++ b/bfd/elf-ifunc.c @@ -190,10 +190,29 @@ _bfd_elf_allocate_ifunc_dyn_relocs (struct bfd_link_info *info, /* Support garbage collection against STT_GNU_IFUNC symbols. */ if (h->plt.refcount <= 0 && h->got.refcount <= 0) { - h->got = htab->init_got_offset; - h->plt = htab->init_plt_offset; - *head = NULL; - return TRUE; + /* When building shared library, we need to handle the case + where it is marked with regular reference, but not non-GOT + reference. It may happen if we didn't see STT_GNU_IFUNC + symbol at the time when checking relocations. */ + bfd_size_type count = 0; + + if (info->shared + && !h->non_got_ref + && h->ref_regular) + { + for (p = *head; p != NULL; p = p->next) + count += p->count; + if (count != 0) + h->non_got_ref = 1; + } + + if (count == 0) + { + h->got = htab->init_got_offset; + h->plt = htab->init_plt_offset; + *head = NULL; + return TRUE; + } } /* Return and discard space for dynamic relocations against it if |