bfd: fix recognition of arch-specific augmentations
This patch fixes _bfd_elf_parse_eh_frame so it will not recognize
machine/architecture specific augmentation characters in EH Frame
CFIs.
Regtested in x86_64-linux-gnu and aarch64-linux-gnu.
bfd/ChangeLog:
* elf-eh-frame.c (_bfd_elf_parse_eh_frame): Recognize augmentation
'B' only if targetting aarch64.
diff --git a/bfd/elf-eh-frame.c b/bfd/elf-eh-frame.c
index 0250a8f..aca1617 100644
--- a/bfd/elf-eh-frame.c
+++ b/bfd/elf-eh-frame.c
@@ -802,6 +802,8 @@
switch (*aug++)
{
case 'B':
+ if (abfd->arch_info->arch != bfd_arch_aarch64)
+ goto unrecognized;
break;
case 'L':
REQUIRE (read_byte (&buf, end, &cie->lsda_encoding));
@@ -843,6 +845,7 @@
REQUIRE (skip_bytes (&buf, end, per_width));
}
break;
+ unrecognized:
default:
/* Unrecognized augmentation. Better bail out. */
goto free_no_table;
