diff options
| author | H.J. Lu <hjl.tools@gmail.com> | 2015-05-12 13:11:48 -0700 |
|---|---|---|
| committer | H.J. Lu <hjl.tools@gmail.com> | 2015-05-12 13:11:48 -0700 |
| commit | a3747075ae478f27bf3e0643021a85fb6cdad0e3 (patch) | |
| tree | 1ffd8565b79a36156fc3e391d79d9ecc6a7d4c63 /bfd/elf64-x86-64.c | |
| parent | 98624574ea8834b2084eb1f0ca7341feecc7329f (diff) | |
| download | gdb-a3747075ae478f27bf3e0643021a85fb6cdad0e3.zip gdb-a3747075ae478f27bf3e0643021a85fb6cdad0e3.tar.gz gdb-a3747075ae478f27bf3e0643021a85fb6cdad0e3.tar.bz2 | |
Allocate the first .plt entry space only if needed
Commit dd7e64d45b317128f5fe813a8da0b13b4ad046ae may optimize out
i386/x86-64 JUMP_SLOT relocation. If there is no JUMP_SLOT relocation
left, we don't need to the first .plt entry. This patch allocates
space for the first .plt entry only if we also reserve space for a PLT
slot for JUMP_SLOT relocation.
bfd/
* elf32-i386.c (elf_i386_allocate_dynrelocs): Allocate space
for the first .plt entry only if needed.
* elf64-x86-64.c (elf_x86_64_allocate_dynrelocs): Likewise.
ld/testsuite/
* ld-i386/i386.exp: Run pltgot-1 for Linux targets.
* ld-x86-64/x86-64.exp: Likewise.
* ld-i386/pltgot-1.d: New file.
* ld-i386/pltgot-1.s: Likewise.
* ld-x86-64/pltgot-1.d: Likewise.
* ld-x86-64/pltgot-1.s: Likewise.
Diffstat (limited to 'bfd/elf64-x86-64.c')
| -rw-r--r-- | bfd/elf64-x86-64.c | 9 |
1 files changed, 4 insertions, 5 deletions
diff --git a/bfd/elf64-x86-64.c b/bfd/elf64-x86-64.c index 34e0f83..e9b5601 100644 --- a/bfd/elf64-x86-64.c +++ b/bfd/elf64-x86-64.c @@ -2558,15 +2558,14 @@ elf_x86_64_allocate_dynrelocs (struct elf_link_hash_entry *h, void * inf) asection *bnd_s = htab->plt_bnd; asection *got_s = htab->plt_got; - /* If this is the first .plt entry, make room for the special - first entry. */ - if (s->size == 0) - s->size = plt_entry_size; - if (use_plt_got) eh->plt_got.offset = got_s->size; else { + /* If this is the first .plt entry, make room for the + special first entry. */ + if (s->size == 0) + s->size = plt_entry_size; h->plt.offset = s->size; if (bnd_s) eh->plt_bnd.offset = bnd_s->size; |