relocation entries for weak undefined symbols with non-default
visibility.
(elf64_x86_64_relocate_section): Initialize the GOT entries and
skip R_386_32/R_386_PC32 for weak undefined symbols with
non-default visibility.
ELF_LINK_NON_GOT_REF for weakdefs when symbol already adjusted.
(ELIMINATE_COPY_RELOCS): Define as one. Use throughout.
(elf_x86_64_adjust_dynamic_symbol): For weak symbols, copy
ELF_LINK_NON_GOT_REF from weakdef.
to the x86-64 backend. Get a closer match to elf32-i386.
(struct elf64_x86_64_dyn_relocs): Rename from
elf64_x86_64_pcrel_relocs_copied, add additional fields. Change
all users.
(struct elf64_x86_64_link_hash_table): Add short cuts to some
sections.
(link_hash_newfunc): Rename from elf64_x86_64_link_hash_newfunc,
remove casts, initialize new hash members.
(create_got_section): New.
(elf64_x86_64_create_dynamic_sections): New.
(elf64_x86_64_copy_indirect_symbol): New.
(elf64_x86_64_check_relocs): Don't allocate space for dynamic
relocs, .got or .relgot here but do it in allocate_dynrelocs.
Reference count possible .plt and .got entries. Don't test input
section SEC_READONLY here to try to avoid copy relocs, and keep
dyn_relocs regardless of ELF_LINK_NON_GOT_REF. Don't set
DF_TEXTREL here. Delay setting of variables until needed. Cache
pointer to "sreloc" section in elf_section_data. Tweak condition
under which .got created. Report files with bad relocation
section names.
(elf64_x86_64_gc_sweep_hook): Sweep dyn_relocs and local_dynrel.
Reference count possible .plt entries. Don't deallocate .got and
.relgot space here.
(elf64_x86_64_adjust_dynamic_symbol): Handle nocopyreloc. Don't
do copy reloc processing for weakdefs. Remove redundant casts and
aborts. Delay setting of vars until needed. Move creation of
dynamic symbols and allocation of .plt and .rela.plt to
allocate_dynrelocs. Replace BFD_ASSERT with abort.
(WILL_CALL_FINISH_DYNAMIC_SYMBOL): New.
(allocate_dynrelocs): New.
(readonly_dynrelocs): New.
(elf64_x86_64_size_dynamic_sections): Call readonly_dynrelocs.
Allocate space for dyn relocs. Replace BFD_ASSERT with abort.
Zero out the dynamic allocated content space.
(elf64_x86_64_discard_copies): Removed.
(elf64_x86_64_relocate_section): Make use of dynamic section
short-cuts. Localise vars, and delay setting. Better error
reporting, replace BFD_ASSERT with abort. Check
ELF_LINK_HASH_DEF_DYNAMIC to see if a symbol is not defined in the
regular object file and tread the weak definition as the normal
one. Don't discard relocs for undefweak or undefined symbols and
check !DEF_REGULAR as well as DEF_DYNAMIC in test for avoided copy
relocs.
(elf64_x86_64_finish_dynamic_symbol): Don't copy relocs for
symbols that have been forced local. Use same test to decide if
we can use a relative reloc for got as relocate_section. Expand
SHN_UNDEF comment. Move expressions out of function calls.
Replace BFD_ASSERT with abort.
(bfd_elf64_bfd_final_link): Removed.
(elf_backend_copy_indirect_symbol): Define.
include/elf/ChangeLog
* external.h (Elf_External_Sym_Shndx): Declare.
* internal.h (struct elf_internal_sym <st_shndx>): Make it an
unsigned int.
* common.h (SHN_BAD): Define.
bfd/ChangeLog
* configure.in: Bump bfd version.
* configure: Regenerate.
* elf-bfd.h (elf_size_info <swap_symbol_out>): Add shndx param.
(bfd_elf32_swap_symbol_in): Likewise.
(bfd_elf32_swap_symbol_out): Likewise.
(bfd_elf64_swap_symbol_in): Likewise.
(bfd_elf64_swap_symbol_out): Likewise.
(elf_reloc_cookie): Add locsym_shndx field. Make locsyms a PTR.
(elf_obj_tdata): Add num_elf_sections, symtab_shndx_hdr and
symtab_shndx_section.
(elf_numsections): Define.
(elf_symtab_shndx): Define.
* elf.c (setup_group): Use elf_numsections rather than header e_shnum.
(bfd_elf_find_section): Likewise.
(bfd_section_from_elf_index): Likewise.
(bfd_section_from_shdr): Likewise. Handle SHT_SYMTAB_SHNDX.
(bfd_section_from_r_symndx): Read symbol shndx extension, and
translate st_shndx for > SHN_HIRESERVE.
(assign_section_numbers): Skip reserved sections. Assign
symtab_shndx_section and elf_numsections. Exclude reserved
sections from e_shnum. Set up symtab_shndx_hdr.
(_bfd_elf_compute_section_file_positions): Handle symtab_shndx_hdr.
(map_sections_to_segments): Don't map eh_frame_hdr unless required.
(assign_file_positions_except_relocs): Use elf_numsections rather
than header e_shnum. Skip reserved sections and symtab_shndx_section.
(prep_headers): Set name for symtab_shndx_hdr.
(_bfd_elf_assign_file_positions_for_relocs): Use elf_numsections.
(_bfd_elf_write_object_contents): Likewise. Skip reserved sections.
(_bfd_elf_section_from_bfd_section): Check bfd_{abs,com,und}_section
first. Use elf_section_data if available. Use elf_numsections.
Start scan at index 1.
(copy_private_bfd_data ): Comment fixes.
(MAP_ONESYMTAB): Define above SHN_HIOS.
(MAP_DYNSYMTAB): Likewise.
(MAP_STRTAB): Likewise.
(MAP_SHSTRTAB): Likewise.
(MAP_SYM_SHNDX): New define.
(_bfd_elf_copy_private_symbol_data): Handle symtab_shndx_section.
(swap_out_syms): Swap out SHT_SYMTAB_SHNDX section too.
* elfcode.h (elf_swap_symbol_in): Add shndx param, and handle shndx
extension.
(elf_swap_symbol_out): Likewise.
(elf_object_p): Set elf_numsections, and use instead of e_shnum.
Initialialise reserved elf_elfsections to point at shdr[0]. Remove
redundant bfd_release calls.
(elf_slurp_symbol_table): Read symbol shndx extension, and use with
elf_swap_symbol_in. Translate st_shndx for > SHN_HIRESERVE too.
* elflink.h (elf_link_is_defined_archive_symbol): Read symbol shndx
extension, and use with elf_swap_symbol_in.
(elf_link_record_local_dynamic_symbol): Likewise.
(elf_link_add_object_symbols): Likewise. Also translate st_shndx
for elf sections > SHN_HIRESERVE.
(NAME(bfd_elf,size_dynamic_sections)): Adjust elf_swap_symbol_out
call.
(struct elf_final_link_info): Add locsym_shndx and symshndxbuf.
(elf_bfd_final_link): Allocate the above, and tidy code allocating
other buffers. Use elf_numsections instead of e_shnum. Adjust
elf_swap_symbol_out calls.
(elf_link_output_sym): Swap out symbol shndx extension too.
(elf_link_flush_output_syms): And flush them to disk.
(elf_link_output_extsym): Use SHN_BAD. Adjust elf_swap_symbol_out
calls.
(elf_gc_mark): Read symbol shndx extension, and use with
elf_swap_symbol_in.
(elf_link_input_bfd): Likewise, Translate st_shndx for elf sections
> SHN_HIRESERVE too. Use SHN_BAD.
(elf_reloc_symbol_deleted_p): Use symbol shndx extensions with
elf_swap_symbol_in. Translate st_shndx > SHN_HIRESERVE too.
(elf_bfd_discard_info): Read symbol shndx extension. Don't attempt
to continue after a bfd error.
* elf-m10200.c (mn10200_elf_relax_section): Only read local syms.
Stash them immediately to symtab_hdr->contents rather than later
in multiple places. Clean up afterwards. Read symbol shndx
extension, and use with swap_symbol_in. Translate SHN_UNDEF,
SHN_ABS, SHN_COMMON and elf sections > SHN_HIRESERVE to bfd
sections too. Remove dead code.
(mn10200_elf_relax_delete_bytes): Use symbol shndx extension
when swapping in symbols. Tidy code adjusting global syms.
Don't swap in global syms.
(mn10200_elf_symbol_address_p): Likewise. Remove extsyms param.
(mn10200_elf_get_relocated_section_contents): Read symbol shndx
extension, and use with swap_symbol_in. Rename "size" -> "amt"
to maximize code in common with other files. Translate st_shndx
for > SHN_HIRESERVE too. Remove dead code.
* elf-m10300.c (mn10300_elf_relax_section): Only read local syms.
Stash them immediately to symtab_hdr->contents rather than later
in multiple places. Clean up afterwards. Read symbol shndx
extension, and use with swap_symbol_in. Remove dead code.
(mn10300_elf_relax_delete_bytes): As for elf-m10200.c.
(mn10300_elf_symbol_address_p): Likewise.
(mn10300_elf_get_relocated_section_contents): Likewise.
* elf32-h8300.c (elf32_h8_relax_section): As for elf-m10300.c.
(elf32_h8_relax_delete_bytes): Likewise.
(elf32_h8_symbol_address_p): Likewise.
(elf32_h8_get_relocated_section_contents): Likewise.
* elf32-hppa.c (elf32_hppa_size_stubs): Read symbol shndx
extension, and use with swap_symbol_in.
* elf64-hppa.c (elf64_hppa_check_relocs): Likewise.
* elf32-i370.c (i370_elf_finish_dynamic_sections): Adjust call to
bfd_elf32_swap_symbol_out.
* elf32-m32r.c (m32r_elf_get_relocated_section_contents): Translate
elf sections > SHN_HIRESERVE too.
* elf32-m68k.c (bfd_m68k_elf32_create_embedded_relocs): Only read
local syms. Read symbol shndx extension, and use with swap_symbol_in.
* elf32-mips.c (_bfd_mips_elf_final_write_processing): Use
elf_numsections rather than header e_shnum.
* elf32-sh.c (sh_elf_relax_section): As for elf-m10300.c.
(sh_elf_relax_delete_bytes): Likewise.
(sh_elf_get_relocated_section_contents): Likewise. Only read local
symbols.
* elf32-v850.c (v850_elf_symbol_processing): Use an unsigned int to
hold section index. Use elf_numsections rather than e_shnum.
Rename "index" -> "indx" to avoid shadowing warning.
(v850_elf_add_symbol_hook): Likewise.
* elf64-alpha.c (elf64_alpha_relax_section): Only read local syms.
Read symbol shndx extension, and use with swap_symbol_in.
* elf32-xstormy16.c (xstormy16_elf_relax_section): Likewise.
Translate SHN_COMMON and elf sections > SHN_HIRESERVE too.
* elfxx-ia64.c (elfNN_ia64_relax_section): Likewise.
(elfNN_ia64_aix_add_symbol_hook): Use elf_numsections.
* elf-m10300.c (mn10300_elf_gc_mark_hook): Remove unnecessary checks
before calling bfd_section_from_elf_index on local syms.
* elf32-arm.h (elf32_arm_gc_mark_hook): Likewise.
* elf32-avr.c (elf32_avr_gc_mark_hook): Likewise.
* elf32-cris.c (cris_elf_gc_mark_hook): Likewise.
* elf32-d10v.c (elf32_d10v_gc_mark_hook): Likewise.
* elf32-fr30.c (fr30_elf_gc_mark_hook): Likewise.
* elf32-hppa.c (elf32_hppa_gc_mark_hook): Likewise.
* elf32-i386.c (elf_i386_gc_mark_hook): Likewise.
* elf32-m32r.c (m32r_elf_gc_mark_hook): Likewise.
* elf32-m68k.c (elf_m68k_gc_mark_hook): Likewise.
* elf32-mcore.c (mcore_elf_gc_mark_hook): Likewise.
* elf32-mips.c (_bfd_mips_elf_gc_mark_hook): Likewise.
* elf32-openrisc.c (openrisc_elf_gc_mark_hook): Likewise.
* elf32-ppc.c (ppc_elf_gc_mark_hook): Likewise.
* elf32-s390.c (elf_s390_gc_mark_hook): Likewise.
* elf32-sh.c (sh_elf_gc_mark_hook): Likewise.
* elf32-sparc.c (elf32_sparc_gc_mark_hook): Likewise.
* elf32-v850.c (v850_elf_gc_mark_hook): Likewise.
* elf32-xstormy16.c (xstormy16_elf_gc_mark_hook): Likewise.
* elf64-mips.c (mips_elf64_gc_mark_hook): Likewise.
* elf64-mmix.c (mmix_elf_gc_mark_hook): Likewise.
* elf64-ppc.c (ppc64_elf_gc_mark_hook): Likewise.
* elf64-s390.c (elf_s390_gc_mark_hook): Likewise.
* elf64-x86-64.c (elf64_x86_64_gc_mark_hook): Likewise.
binutils/ChangeLog
* readelf.c (symtab_shndx_hdr): New global.
(SECTION_HEADER_INDEX): Define.
(SECTION_HEADER_NUM): Define.
(SECTION_HEADER): Define.
(GET_ELF_SYMBOLS): Pass two params rather than three.
(get_32bit_elf_symbols): Take file and section args. Read and
use SHT_SYMTAB_SHNDX.
(get_64bit_elf_symbols): Likewise.
(dump_relocations): Use SECTION_HEADER to index "section_headers".
(process_section_headers): Likewise. Use SECTION_HEADER_NUM too.
Remember symtab_shdx_hdr.
(process_program_headers): Scan from index 1 for segment map.
(slurp_ia64_unwind_table): Use SECTION_HEADER to index
"section_headers".
(process_relocs): Likewise. Also adjust call to GET_ELF_SYMBOLS.
(process_unwind): Likewise.
(process_version_sections): Likewise.
(process_symbol_table): Likewise.
(display_debug_info): Likewise.
(process_dynamic_segment): Fake up a symtab section for changed
GET_ELF_SYMBOLS.
(get_symbol_index_type): Check SHN_LOOS before SHN_LORESERVE.
(process_program_headers): Kill signed/unsigned warning.
(load_debug_str): Likewise.
(display_debug_info): Likewise.
(struct elf_backend_data): Add can_refcount.
* elf.c (_bfd_elf_link_hash_newfunc): Get rid of a few casts. Set
got.refcount and plt.refcount from init_refcount.
(_bfd_elf_link_hash_table_init): Set up init_refcount.
(_bfd_elf_link_hash_copy_indirect): Reference got/plt.refcount
rather than got/plt.offset, and test for <= 0 rather than -1.
* elflink.h (size_dynamic_sections): Set init_refcount to -1.
* elfxx-target.h (elf_backend_can_refcount): Define.
(elfNN_bed): Init can_refcount.
* linker.c (_bfd_link_hash_newfunc): Get rid of a few casts.
(_bfd_generic_link_hash_newfunc): Likewise.
* elf32-cris.c (cris_elf_check_relocs): Modify for refcounts
starting from zero.
(elf_backend_can_refcount): Define.
* elf32-hppa.c (elf32_hppa_check_relocs): Modify for refcounts
starting from zero.
(elf32_hppa_copy_indirect_symbol): Make static to agree with
prototype.
(elf_backend_can_refcount): Define.
* elf32-i386.c (elf_i386_check_relocs): Modify for refcounts
starting from zero.
(allocate_dynrelocs): Set plt/got.offset rather than *.refcount.
(elf_i386_finish_dynamic_symbol): Expand SHN_UNDEF comment.
(elf_i386_finish_dynamic_sections): Use local var so line < 80 chars.
(elf_backend_can_refcount): Define.
(elf_i386_copy_indirect_symbol): Make static to agree with
prototype. Formatting fix.
* elf32-m68k.c (elf_m68k_check_relocs): Modify for refcounts
starting from zero.
(elf_backend_can_refcount): Define.
* elf32-ppc.c (ppc_elf_check_relocs): Modify for refcounts
starting from zero.
(elf_backend_can_refcount): Define.
* elf32-s390.c (elf_s390_check_relocs): Modify for refcounts
starting from zero.
(elf_backend_can_refcount): Define.
* elf64-s390.c (elf_s390_check_relocs): Modify for refcounts
starting from zero.
(elf_backend_can_refcount): Define.
* elf64-x86-64.c (elf64_x86_64_check_relocs): Modify for refcounts
starting from zero.
(elf_backend_can_refcount): Define.
o bfd_read and bfd_write lose an unnecessary param and become
bfd_bread and bfd_bwrite.
o bfd_*alloc now all take a bfd_size_type arg, and will error if
size_t is too small. eg. 32 bit host, 64 bit bfd, verrry big files
or bugs in linker scripts etc.
o file_ptr becomes a bfd_signed_vma. Besides matching sizes with
various other types involved in handling sections, this should make
it easier for bfd to support a 64 bit off_t on 32 bit hosts that
provide it.
o I've made the H_GET_* and H_PUT_* macros (which invoke bfd_h_{get,put}_*)
generally available. They now cast their args to bfd_vma and
bfd_byte * as appropriate, which removes a swag of casts from the
source.
o Bug fixes to bfd_get8, aix386_core_vec, elf32_h8_relax_section, and
aout-encap.c.
o Zillions of formatting and -Wconversion fixes.
the reloc is against read-only section.
(elf64_x86_64_size_dynamic_sections): Use DF_TEXTREL flag instead
of looking up section names for DT_TEXTREL.
(elf64_x86_64_reloc_type_class): New.
(elf_backend_reloc_type_class): Define.
* elf64-x86-64.c (elf64_x86_64_finish_dynamic_symbol): Add an
assertion.
(elf64_x86_64_check_relocs): Fix VTENTRY relocation; set an
alignment of 8 for .rela sections; handle further relocations.
out handled entries.
(elf64_x86_64_finish_dynamic_symbol): Set up GOT entries.
(elf64_x86_64_relocate_section): Fix GOTPCREL calculation.
(elf64_x86_64_relocate_section): Merge entries for GOTPCREL and
GOT32.
* elf64-x86-64.c: Small formatting fixes and rearrangements of code.
(elf64_86_64_size_info): Struct added to fix a problem
with the hashtable string entries.
(elf64_x86_64_adjust_dynamic_symbol): Add generation of .got.plt.
(elf64_x86_64_size_dynamic_sections): A FIXME removed.
(elf64_x86_64_size_dynamic_sections): Fix a dynamic entry and
remove the FIXME for this.
(elf64_x86_64_adjust_dynamic_symbol): Fix check for unneeded .plt
section. Also removed the FIXME for it.
(x86_64_elf_howto_table): Use bfd_elf_generic_reloc.
(ELF_DYNAMIC_INTERPRETER): Fix the name of the dynamic linker.
(elf64_x86_64_finish_dynamic_sections): Enable .got.plt writing.
