elf_backend_copy_indirect_symbol so that backend has a chance to
copy other necessary fields.
* elf-bfd.h (struct elf_backend_data): Update description of
elf_backend_copy_indirect_symbol.
* elf.c (_bfd_elf_link_hash_copy_indirect): Bail out after
copying flags if this is a weakdef.
* elfxx-ia64.c (elfNN_ia64_hash_copy_indirect): Likewise.
(elfNN_ia64_aix_add_symbol_hook): Use elf_link_hash_lookup rather
than bfd_link_hash_lookup.
* elf32-i386 (elf_i386_adjust_dynamic_symbol): Don't do copy
reloc processing for weakdefs.
* elf32-hppa.c (elf32_hppa_adjust_dynamic_symbol): Likewise.
* elf64-ppc.c (ppc64_elf_adjust_dynamic_symbol): 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.
no longer allocate here. Localise some vars to blocks where they
are used. Remove separate switch stmt for creating .got sec.
(elf_i386_adjust_dynamic_symbol): Correct a comment. Remove
redundant casts and aborts. Delay setting of vars until needed.
(allocate_dynrelocs): Remove redundant casts and aborts.
(elf_i386_size_dynamic_sections): Move comment.
(elf_i386_finish_dynamic_symbol): Move expressions out of function
calls.
(elf_i386_relocate_section): Likewise. Comment typo fix.
(elf_i386_finish_dynamic_sections): Migrate common code out of
switch statement.
(elf_backend_* defines): Sort.
(elf_backend_copy_indirect_symbol): Define.
(struct elf_i386_link_hash_entry): Rename "root" to "elf".
(struct elf_i386_link_hash_table): Likewise.
(link_hash_newfunc): Get rid of unnecessary casts.
(elf_i386_link_hash_table_create): Likewise.
(elf_i386_check_relocs): Initialise local_got_refcounts to 0.
Don't test input section SEC_READONLY here to try to avoid copy
relocs, and keep dyn_relocs regardleas of ELF_LINK_NON_GOT_REF.
(elf_i386_adjust_dynamic_symbol): Check output section SEC_READONLY
here to properly test whether we need copy relocs. Do so for weak
syms too.
* elf32-hppa (elf32_hppa_copy_indirect_symbol): New function.
(elf_backend_copy_indirect_symbol): Define.
(struct elf32_hppa_link_hash_table): Rename "root" to "elf".
(stub_hash_newfunc): Get rid of unnecessary casts.
(hppa_link_hash_newfunc): Likewise.
(elf32_hppa_check_relocs): Initialise local_got_refcounts to 0.
Don't test input section SEC_READONLY here to try to avoid copy
relocs, and keep dyn_relocs regardleas of ELF_LINK_NON_GOT_REF.
(elf32_hppa_adjust_dynamic_symbol): Check output section SEC_READONLY
here to properly test whether we need copy relocs. Do so for weak
syms too.
(elf_i386_link_hash_newfunc): Rename to link_hash_newfunc.
(elf_i386_grok_prstatus): Move before linker functions.
(elf_i386_grok_psinfo): Likewise.
(elf_i386_fake_sections): Move so that functions are ordered.
(elf_i386_reloc_type_class): Likewise. Comment function purpose.
and "sreloc" fields.
* elf32-i386.c (struct elf_i386_dyn_relocs): Add "sec", and
"pc_count" fields. Remove "section" field.
(elf_i386_check_relocs): Don't set DF_TEXTREL here. Don't
allocate space for dynamic relocs here. Instead, record all
needed dynamic relocs via dyn_relocs and local_dynrel. Cache
pointer to "sreloc" section in elf_section_data.
(elf_i386_gc_sweep_hook): Sweep dyn_relocs and local_dynrel.
(allocate_plt_and_got_and_discard_relocs): Rename to
allocate_dynrelocs. Allocate rather than discarding dyn relocs.
(readonly_dynrelocs): New function.
(elf_i386_size_dynamic_sections): Call readonly_dynrelocs.
Rename "i" to "ibfd". Allocate space for local dyn relocs.
(elf_i386_relocate_section): Make use of cached sreloc.
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.
as well as DEF_DYNAMIC in test for avoided copy relocs.
(allocate_plt_and_got_and_discard_relocs): Likewise.
* elf32-i386.c (elf_i386_relocate_section): Likewise.
(allocate_plt_and_got_and_discard_relocs): Likewise.
(struct elf_backend_data): Add elf_backend_reloc_type_class.
(_bfd_elf_reloc_type_class): New.
* elfxx-target.h (elf_backend_reloc_type_class): Define.
(elfNN_bed): Add elf_backend_reloc_type_class.
* elf.c (_bfd_elf_reloc_type_class): New.
* elf32-i386.c (elf_i386_check_relocs): Set DF_TEXTREL if the reloc
is against read-only section.
(elf_i386_size_dynamic_sections): Use DF_TEXTREL flag instead of
looking up section names for DT_TEXTREL.
(elf_i386_reloc_type_class): New.
(elf_backend_reloc_type_class): Define.
* elf32-sparc.c (elf32_sparc_check_relocs): Set DF_TEXTREL if the
reloc is against read-only section.
(elf32_sparc_size_dynamic_sections): Use DF_TEXTREL flag instead of
looking up section names for DT_TEXTREL.
(elf32_sparc_reloc_type_class): New.
(elf_backend_reloc_type_class): Define.
* elf64-sparc.c (sparc64_elf_check_relocs): Set DF_TEXTREL if the
reloc is against read-only section.
(sparc64_elf_size_dynamic_sections): Use DF_TEXTREL flag instead of
looking up section names for DT_TEXTREL.
(sparc64_elf_reloc_type_class): New.
(elf_backend_reloc_type_class): Define.
* elfxx-ia64.c (struct elfNN_ia64_link_hash_table): Add reltext field.
(elfNN_ia64_hash_table_create): Clear ia64_info.
(get_reloc_section): Set DF_TEXTREL if the reloc is against read-only
section.
(elfNN_ia64_size_dynamic_sections): Use ia64_info->reltext flag
instead of looking up section names for DT_TEXTREL.
(elfNN_ia64_reloc_type_class): New.
(elf_backend_reloc_type_class): Define.
* elflink.h (size_dynamic_sections): Add spare DT_NULL tags.
(struct elf_link_sort_rela): New.
(elf_link_sort_cmp1, elf_link_sort_cmp2, elf_link_sort_relocs): New.
(elf_bfd_final_link): Call elf_link_sort_relocs.
Convert one spare DT_NULL into DT_RELCOUNT resp. DT_RELACOUNT if
necessary.
* bfdlink.h (struct bfd_link_info): Add combreloc and
spare_dynamic_tags fields.
* emultempl/elf32.em (place_orphan): Place orphan .rel* sections
into .rel.dyn resp. .rela.dyn if combreloc.
(get_script): If .x linker script is equal to .xn, only put it
once into the binary.
Add .xc and .xsc scripts.
(parse_args): Handle -z combreloc and -z nocombreloc.
* scripttempl/elf.sc (.rela.sbss): Fix a typo.
For .xc and .xsc scripts put all .rel* or .rela* input sections
but .rel*.plt and PLT-like sections into .rel.dyn resp. .rela.dyn.
* genscripts.sh (GENERATE_COMBRELOC_SCRIPT): Set if SCRIPT_NAME
is elf.
Strip trailing whitespace from script.
Generate .xc and .xsc scripts if requested.
* ldmain.c (main): Initialize link_info.combreloc and
link_info.spare_dynamic_tags.
* lexsup.c (OPTION_SPARE_DYNAMIC_TAGS): Define.
(ld_options): Add --spare-dynamic-tags option.
(parse_args): Likewise.
* ld.texinfo: Document -z combreloc and -z nocombreloc.
* ldint.texinfo: Document .xc and .xsc linker scripts.
* NEWS: Add notes about -z combreloc and SHF_MERGE.
here..
(elf_i386_adjust_dynamic_symbol): ..nor here..
(allocate_plt_and_got_and_discard_relocs): .. instead do so here
after gc has run.
(elf_i386_size_dynamic_sections): Fix a comment.
(elf_i386_relocate_section <R_386_32, R_386_PC32>): Rearrange code
involved in writing reloc out.
Ensure syms are dynamic if we might be emitting a reloc.
(allocate_plt_and_got_and_discard_relocs): Don't discard relocs
for undefweak or undefined syms..
(elf_i386_relocate_section <R_386_32, R_386_PC32>): .. and emit.
* elf32-i386.c (elf_i386_relocate_section): Check the
ELF_LINK_HASH_DEF_DYNAMIC to see if a symbol is not defined
in the regular object file and treat the weak definition as
the normal one.
unresolved_reloc test to exclude cases where we use "relocation"
before setting it to point into the .got. Reinstate fudge for
unresolved relocs in debugging sections.
* elf32-i386.c (elf_i386_check_relocs): Tweak condition under
which .got created. Mark symbols used by R_386_32 and R_386_PC32
relocs as ELF_LINK_NON_GOT_REF to create COPY relocs only when the
reloc is in a read-only section. Instead, allocate space for a
dynamic reloc to reference the library symbol directly. Keep
track of space we allocate using pcrel_relocs_copied.
(discard_copies): Delete, and move code to ..
(allocate_plt_and_got): ..here. Rename to
allocate_plt_and_got_and_discard_relocs. Remove unneeded dynamic
relocs for non-shared link.
(elf_i386_size_dynamic_sections): Update calls to above functions.
(elf_i386_relocate_section): Write out the dynamic relocs. Add
more ugly logic to avoid "unresolvable relocation" error. Use
htab shortcut in place of elf_hash_table macro.
(elf_i386_finish_dynamic_sections): Allow that dynamic .got may
not always be created now.
discard_copies, and use elf_link_hash_entry arg rather than
elf_i386_link_hash_entry.
(elf_i386_link_hash_traverse): Delete.
(elf_i386_size_dynamic_sections): Adjust call to discard_copies.
Tidy sizing of dynamic sections.
(elf_i386_check_relocs <R_386_32, R_386_PC32>): Reference count
possible .plt entries.
(elf_i386_gc_sweep_hook): Likewise.
(elf_i386_adjust_dynamic_symbol): Discard .plt entries for
everything with plt.refcount <= 0.
* elf32-i386.c (elf_i386_check_relocs): Don't allocate .got and
.relgot space here.
(elf_i386_gc_sweep_hook): ..and no need to deallocate here..
(elf32_hppa_adjust_dynamic_symbol): ..and don't allocate .plt and
.rel.plt here..
(allocate_plt_and_got): ..instead do it all here. New function.
(elf_i386_size_dynamic_sections): Allocate local .got space and
call allocate_plt_and_got. No need to zap .relgot if not dynamic.
(bfd_elf32_bfd_final_link): Delete. (ie. use regular final link
rather than gc variety).
(WILL_CALL_FINISH_DYNAMIC_SYMBOL): Define.
(elf_i386_relocate_section): Use it here and correct handling of
R_386_GOT32. Provide section and offset for "unresolvable
relocation" error message.
(elf_i386_finish_dynamic_symbol): Correct handling of R_386_GOT32.
* elf32-i386.c (struct elf_i386_link_hash_table): Add sgot,
sgotplt, srelgot, splt, srelplt, sdynbss, srelbss fields.
(elf_i386_link_hash_table_create): Init them.
(create_got_section): New function.
(elf_i386_create_dynamic_sections): New function.
(elf_backend_create_dynamic_sections): Set to above.
(elf_i386_check_relocs): Use shortcuts from hash table rather than
calling bfd_get_section_by_name.
(elf_i386_gc_sweep_hook): Likewise.
(elf_i386_adjust_dynamic_symbol): Likewise.
(elf_i386_size_dynamic_sections): Likewise.
(elf_i386_relocate_section): Likewise.
(elf_i386_finish_dynamic_sections): Likewise.
* elf32-i386.c (elf_i386_check_relocs): Report files with bad
relocation section names.
(elf_i386_relocate_section): Report files with bad relocation
section names and return false.
* elf32-arm.h (elf32_arm_size_dynamic_sections): Also set
DF_TEXTREL if DT_TEXTREL is set.
* elf32-i370.c (i370_elf_size_dynamic_sections): Likewise.
* elf32-i386.c (elf_i386_size_dynamic_sections): Likewise.
* elf32-m68k.c (elf_m68k_size_dynamic_sections): Likewise.
* elf32-mips.c (_bfd_mips_elf_size_dynamic_sections): Likewise.
* elf32-ppc.c (ppc_elf_size_dynamic_sections): Likewise.
* elf32-sparc.c (elf32_sparc_size_dynamic_sections): Likewise.
* elf64-alpha.c (elf64_alpha_size_dynamic_sections): Likewise.
* elf64-hppa.c (elf64_hppa_size_dynamic_sections): Likewise.
* elf64-ia64.c (elf64_ia64_size_dynamic_sections): Likewise.
* elf64-sparc.c (sparc64_elf_size_dynamic_sections): Likewise.
* bfd/elflink.h (NAME(bfd_elf,size_dynamic_sections)): Also
set DF_SYMBOLIC for symbolic link. Also set DT_RUNPATH if
DT_RPATH is set.
Set the DT_FLAGS and DT_FLAGS_1 entries if necessary.
