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| author | H.J. Lu <hjl.tools@gmail.com> | 2010-07-13 16:59:14 +0000 |
|---|---|---|
| committer | H.J. Lu <hjl.tools@gmail.com> | 2010-07-13 16:59:14 +0000 |
| commit | bb1cb422aef79013990a3331f837a8dd24d71165 (patch) | |
| tree | feeacaf154cf0e24afcea5451d49e3b400bf94a9 /bfd/elf-ifunc.c | |
| parent | 9aa1f1e33995b48c94b8d6833d071751aa02f751 (diff) | |
| download | gdb-bb1cb422aef79013990a3331f837a8dd24d71165.zip gdb-bb1cb422aef79013990a3331f837a8dd24d71165.tar.gz gdb-bb1cb422aef79013990a3331f837a8dd24d71165.tar.bz2 | |
Support garbage collection against STT_GNU_IFUNC symbols.
bfd/
2010-07-13 H.J. Lu <hongjiu.lu@intel.com>
PR ld/11791
* elf-ifunc.c (_bfd_elf_allocate_ifunc_dyn_relocs): Support
garbage collection against STT_GNU_IFUNC symbols.
* elf32-i386.c (elf_i386_get_local_sym_hash): Don't set
elf.plt.offset/elf.got.offset to -1.
(elf_i386_tls_transition): Skip TLS transition for functions.
(elf_i386_gc_sweep_hook): Support STT_GNU_IFUNC symbols.
* elf64-x86-64.c (elf64_x86_64_get_local_sym_hash): Don't set
elf.plt.offset/elf.got.offset to -1.
(elf64_x86_64_tls_transition): Skip TLS transition for functions.
(elf64_x86_64_gc_sweep_hook): Support STT_GNU_IFUNC symbols.
ld/testsuite/
2010-07-13 H.J. Lu <hongjiu.lu@intel.com>
PR ld/11791
* ld-ifunc/ifunc-10-i386.d: New.
* ld-ifunc/ifunc-10-i386.s: Likewise.
* ld-ifunc/ifunc-10-x86-64.d: Likewise.
* ld-ifunc/ifunc-10-x86-64.s: Likewise.
* ld-ifunc/ifunc-11-i386.d: Likewise.
* ld-ifunc/ifunc-11-i386.s: Likewise.
* ld-ifunc/ifunc-11-x86-64.d: Likewise.
* ld-ifunc/ifunc-11-x86-64.s: Likewise.
Diffstat (limited to 'bfd/elf-ifunc.c')
| -rw-r--r-- | bfd/elf-ifunc.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/bfd/elf-ifunc.c b/bfd/elf-ifunc.c index 0de236f..760fc26 100644 --- a/bfd/elf-ifunc.c +++ b/bfd/elf-ifunc.c @@ -187,6 +187,15 @@ _bfd_elf_allocate_ifunc_dyn_relocs (struct bfd_link_info *info, htab = elf_hash_table (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; + } + /* Return and discard space for dynamic relocations against it if it is never referenced in a non-shared object. */ if (!h->ref_regular) |