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| author | Jiong Wang <jiong.wang@arm.com> | 2016-05-03 11:59:37 +0100 |
|---|---|---|
| committer | Jiong Wang <jiong.wang@arm.com> | 2016-05-03 11:59:37 +0100 |
| commit | 1f56df9d0d5ad89806c24e71f296576d82344613 (patch) | |
| tree | 5119f229d105a5dbb5a18c77cef5407d318a7fde /bfd/bfd-in2.h | |
| parent | 20f55f3866ab70778d08fec2c09626cff9ed781d (diff) | |
| download | gdb-1f56df9d0d5ad89806c24e71f296576d82344613.zip gdb-1f56df9d0d5ad89806c24e71f296576d82344613.tar.gz gdb-1f56df9d0d5ad89806c24e71f296576d82344613.tar.bz2 | |
[AArch64] Also puts value in place for R_AARCH64_RELATIVE
When handling absolute relocations for global symbols bind within the
shared object, AArch64 will generate one dynamic RELATIVE relocation,
but won't apply the value for this absolution relocations at static
linking stage. This is different from AArch64 gold linker and x86-64.
This is not a bug as AArch64 is RELA, there is only guarantee that
relocation addend is placed in the relocation entry. But some
system softwares originally writen for x86-64 might assume AArch64
bfd linker gets the same behavior as x86-64, then they could take
advantage of this buy skipping those RELATIVE dynamic relocations
if the load address is the same as the static linking address.
This patch makes AArch64 BFD linker applies absolution relocations at
static linking stage for scenario described above. Meanwhile old AArch64
android loader has a bug (PR19163) which relies on current linker behavior
as a workaround, so the same option --no-apply-dynamic-relocs added.
Diffstat (limited to 'bfd/bfd-in2.h')
| -rw-r--r-- | bfd/bfd-in2.h | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/bfd/bfd-in2.h b/bfd/bfd-in2.h index a19a651..f68c1076 100644 --- a/bfd/bfd-in2.h +++ b/bfd/bfd-in2.h @@ -968,10 +968,10 @@ extern void bfd_elf32_aarch64_init_maps (bfd *); extern void bfd_elf64_aarch64_set_options - (bfd *, struct bfd_link_info *, int, int, int, int, int); + (bfd *, struct bfd_link_info *, int, int, int, int, int, int); extern void bfd_elf32_aarch64_set_options - (bfd *, struct bfd_link_info *, int, int, int, int, int); + (bfd *, struct bfd_link_info *, int, int, int, int, int, int); /* ELF AArch64 mapping symbol support. */ #define BFD_AARCH64_SPECIAL_SYM_TYPE_MAP (1 << 0) |