diff options
| author | Maciej W. Rozycki <macro@imgtec.com> | 2016-01-04 23:00:24 +0000 |
|---|---|---|
| committer | Maciej W. Rozycki <macro@imgtec.com> | 2016-01-04 23:00:24 +0000 |
| commit | 23ba6f1807299311717df4d48b5f68d534ab6c47 (patch) | |
| tree | bd5b0f8c34364bd741758b64eed2bcee60a2c935 /bfd | |
| parent | cf8502c1314287df100e44f81c4e3cf32c198353 (diff) | |
MIPS/BFD: Suppress attribute checks for null input
We currently special-case the handling of attribute checks on input
objects and make them even before we check a given input object actually
contains any sections. This does not add value as empty objects do not
cause a compatibility concern and we already make this observation for
other properties such as ELF file header flags. Moreover the attributes
themselves are stored in a `.gnu.attributes' section so the absence of
any section (except from a few special cases) implies there have been no
attributes provided either. Therefore it is safe to move the attribute
checks later on, after the null-section check has been made.
bfd/
* elfxx-mips.c (_bfd_mips_elf_merge_private_bfd_data): Suppress
attribute checks for null input.
Diffstat (limited to 'bfd')
| -rw-r--r-- | bfd/ChangeLog | 5 | ||||
| -rw-r--r-- | bfd/elfxx-mips.c | 30 |
2 files changed, 20 insertions, 15 deletions
diff --git a/bfd/ChangeLog b/bfd/ChangeLog index 7d0fdb87cb..06dc3b3d7e 100644 --- a/bfd/ChangeLog +++ b/bfd/ChangeLog @@ -1,5 +1,10 @@ 2016-01-04 Maciej W. Rozycki <macro@imgtec.com> + * elfxx-mips.c (_bfd_mips_elf_merge_private_bfd_data): Suppress + attribute checks for null input. + +2016-01-04 Maciej W. Rozycki <macro@imgtec.com> + * elfxx-mips.c (_bfd_mips_elf_merge_private_bfd_data): Use local pointers to target data. diff --git a/bfd/elfxx-mips.c b/bfd/elfxx-mips.c index 39e65d68a0..e502f73c79 100644 --- a/bfd/elfxx-mips.c +++ b/bfd/elfxx-mips.c @@ -15056,21 +15056,9 @@ _bfd_mips_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd) return FALSE; } - /* Set up the FP ABI attribute from the abiflags if it is not already - set. */ - if (in_tdata->abiflags_valid) - { - obj_attribute *in_attr = elf_known_obj_attributes (ibfd)[OBJ_ATTR_GNU]; - if (in_attr[Tag_GNU_MIPS_ABI_FP].i == Val_GNU_MIPS_ABI_FP_ANY) - in_attr[Tag_GNU_MIPS_ABI_FP].i = in_tdata->abiflags.fp_abi; - } - - if (!mips_elf_merge_obj_attributes (ibfd, obfd)) - return FALSE; - - /* Check to see if the input BFD actually contains any sections. - If not, its flags may not have been initialised either, but it cannot - actually cause any incompatibility. */ + /* Check to see if the input BFD actually contains any sections. If not, + then it has no attributes, and its flags may not have been initialized + either, but it cannot actually cause any incompatibility. */ for (sec = ibfd->sections; sec != NULL; sec = sec->next) { /* Ignore synthetic sections and empty .text, .data and .bss sections @@ -15092,6 +15080,18 @@ _bfd_mips_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd) if (null_input_bfd) return TRUE; + /* Set up the FP ABI attribute from the abiflags if it is not already + set. */ + if (in_tdata->abiflags_valid) + { + obj_attribute *in_attr = elf_known_obj_attributes (ibfd)[OBJ_ATTR_GNU]; + if (in_attr[Tag_GNU_MIPS_ABI_FP].i == Val_GNU_MIPS_ABI_FP_ANY) + in_attr[Tag_GNU_MIPS_ABI_FP].i = in_tdata->abiflags.fp_abi; + } + + if (!mips_elf_merge_obj_attributes (ibfd, obfd)) + return FALSE; + /* Populate abiflags using existing information. */ if (!in_tdata->abiflags_valid) { |