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| author | Nick Clifton <nickc@redhat.com> | 2016-11-23 11:10:39 +0000 |
|---|---|---|
| committer | Nick Clifton <nickc@redhat.com> | 2016-11-23 11:10:39 +0000 |
| commit | 1a9ccd70f9a75dc6b48d340059f28ef3550c107b (patch) | |
| tree | a270b05984cd44808359c6f6773ce0dfa5d3dff7 /bfd/elfxx-target.h | |
| parent | 128e85e3ab36b8e30f6612fb50de3cbb4ede6824 (diff) | |
| download | gdb-1a9ccd70f9a75dc6b48d340059f28ef3550c107b.zip gdb-1a9ccd70f9a75dc6b48d340059f28ef3550c107b.tar.gz gdb-1a9ccd70f9a75dc6b48d340059f28ef3550c107b.tar.bz2 | |
Fix the linker so that it will not silently generate ELF binaries with invalid program headers. Fix readelf to report such invalid binaries.
PR ld/20815
bfd * elf.c (elf_modify_segment_map): Allow empty LOAD segments if
they contain the program headers.
(_bfd_elf_map_sections_to_segments): If the linker created the
PHDR segment then always attempt to include it in a LOAD segment.
(assign_file_positions_for_non_load_sections): Allow LOAD segments
to overlap PHDR segments.
(phdr_sorter): New function. Sorts program headers.
(assign_file_positions_except_relocs): Sort the program headers
before writing them out. Issue an error if the PHDR segment is
not covered by a LOAD segment, unless the backend allows it.
* elf-bfd.h (struct elf_backend_data): Add
elf_backend_allow_non_load_phdr.
* elfxx-target.h (elf_backend_allow_non_load_phdr): Provide
default definition that returns FALSE.
(elfNN_bed): Initialise the elf_backend_allow_non_load_phdr
field.
* elf64-hppa.c (elf64_hppa_allow_non_load_phdr): New function.
Returns TRUE.
(elf_backend_allow_non_load_phdr): Define.
* elf-m10300.c (_bfd_mn10300_elf_size_dynamic_sections): Do not
place the interpreter string into the .interp section if the
nointerp flag is set in the link info structure.
* elf32-arc.c (elf_arc_size_dynamic_sections): Likewise.
* elf32-score7.c (score_elf_final_link_relocate): Allow for the
_gp symbol not being part of the output.
binutils* readelf.c (process_program_headers): Check PT_LOAD and PT_PHDR
segments for validity.
ld * ld.texinfo: Note that PT_TLS can be used as a segment type.
* testsuite/ld-discard/discard.ld: Add space for program headers.
* testsuite/ld-elf/flags1.ld: Likewise.
* testsuite/ld-elf/maxpage3.t: Likewise.
* testsuite/ld-elf/noload-1.t: Likewise.
* testsuite/ld-elf/orphan.ld: Likewise.
* testsuite/ld-elf/overlay.t: Likewise.
* testsuite/ld-elf/pr14052.t: Likewise.
* testsuite/ld-elf/pr19539.t: Likewise.
* testsuite/ld-elf/provide-hidden-1.ld: Likewise.
* testsuite/ld-elf/provide-hidden-s.ld: Likewise.
* testsuite/ld-elf/weak-dyn-1.ld: Likewise.
* testsuite/ld-i386/pr19539.t: Likewise.
* testsuite/ld-scripts/defined.t: Likewise.
* testsuite/ld-scripts/defined6.t: Likewise.
* testsuite/ld-scripts/dynamic-sections.t: Likewise.
* testsuite/ld-scripts/empty-aligned.t: Likewise.
* testsuite/ld-scripts/provide-2.t: Likewise.
* testsuite/ld-scripts/provide-4.t: Likewise.
* testsuite/ld-vax-elf/plt-local.ld: Likewise.
* testsuite/ld-x86-64/pr19539.t: Likewise.
* testsuite/ld-elf/ehdr_start-missing.d: Do not initialise the
dynamic linker.
* testsuite/ld-elf/ehdr_start-weak.d: Likewise.
* testsuite/ld-elf/elf.exp (pr14170, pr17068): Likewise.
* testsuite/ld-elf/loadaddr1.d: Update expected readelf output.
* testsuite/ld-elf/noload-2.d: Likewise.
* testsuite/ld-powerpc/vxworks2.sd: Likewise.
* testsuite/ld-scripts/phdrs3a.d: Likewise.
* testsuite/ld-scripts/size-2.d: Likewise.
* testsuite/ld-elf/group.ld: Add program headers.
* testsuite/ld-elf/overlay.d: Skip for SPU.
* testsuite/ld-elf/flags1.d: Skip for RX.
* testsuite/ld-elf/pr19162.d: Skip for HPPA64.
* testsuite/ld-elf/pr19539.d: Skip for ALPHA.
* testsuite/ld-scripts/empty-orphan.t: Update program headers.
* testsuite/ld-scripts/size-2.t: Likewise.
Diffstat (limited to 'bfd/elfxx-target.h')
| -rw-r--r-- | bfd/elfxx-target.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/bfd/elfxx-target.h b/bfd/elfxx-target.h index 5ff39dd..aff8621 100644 --- a/bfd/elfxx-target.h +++ b/bfd/elfxx-target.h @@ -479,6 +479,10 @@ #ifndef elf_backend_modify_program_headers #define elf_backend_modify_program_headers 0 #endif +#ifndef elf_backend_allow_non_load_phdr +#define elf_backend_allow_non_load_phdr \ + ((bfd_boolean (*) (bfd *, const Elf_Internal_Phdr *, unsigned)) bfd_false) +#endif #ifndef elf_backend_ecoff_debug_swap #define elf_backend_ecoff_debug_swap 0 #endif @@ -765,6 +769,7 @@ static struct elf_backend_data elfNN_bed = elf_backend_additional_program_headers, elf_backend_modify_segment_map, elf_backend_modify_program_headers, + elf_backend_allow_non_load_phdr, elf_backend_gc_keep, elf_backend_gc_mark_dynamic_ref, elf_backend_gc_mark_hook, |