Discard FDEs for zero-length address ranges.

[deliverable/binutils-gdb.git] / bfd / ChangeLog

2016-02-26  H.J. Lu  <hongjiu.lu@intel.com>

	PR ld/19645
	* bfd.c (bfd): Change flags to 20 bits.
	(BFD_CONVERT_ELF_COMMON): New.
	(BFD_USE_ELF_STT_COMMON): Likewise.
	(BFD_FLAGS_SAVED): Add BFD_CONVERT_ELF_COMMON and
	BFD_USE_ELF_STT_COMMON.
	(BFD_FLAGS_FOR_BFD_USE_MASK): Likewise.
	* configure.ac: Remove --enable-elf-stt-common.
	* elf.c (swap_out_syms): Choose STT_COMMON or STT_OBJECT for
	common symbol depending on BFD_CONVERT_ELF_COMMON and
	BFD_USE_ELF_STT_COMMON.
	* elfcode.h (elf_slurp_symbol_table): Set BSF_ELF_COMMON for
	STT_COMMON.
	* elflink.c (bfd_elf_link_mark_dynamic_symbol): Also check
	STT_COMMON.
	(elf_link_convert_common_type): New function.
	(elf_link_output_extsym): Choose STT_COMMON or STT_OBJECT for
	common symbol depending on BFD_CONVERT_ELF_COMMON and
	BFD_USE_ELF_STT_COMMON.  Set sym.st_info after sym.st_shndx.
	* elfxx-target.h (TARGET_BIG_SYM): Add BFD_CONVERT_ELF_COMMON
	and BFD_USE_ELF_STT_COMMON to object_flags.
	(TARGET_LITTLE_SYM): Likewise.
	* syms.c (BSF_KEEP_G): Renamed to ...
	(BSF_ELF_COMMON): This.
	* bfd-in2.h: Regenerated.
	* config.in: Likewise.
	* configure: Likewise.

2016-02-26  H.J. Lu  <hongjiu.lu@intel.com>

	PR ld/19636
	PR ld/19704
	PR ld/19719
	* elf32-i386.c (UNDEFINED_WEAK_RESOLVED_TO_ZERO): New.
	(elf_i386_link_hash_entry): Add has_got_reloc and
	has_non_got_reloc.
	(elf_i386_link_hash_table): Add interp.
	(elf_i386_link_hash_newfunc): Initialize has_got_reloc and
	has_non_got_reloc.
	(elf_i386_copy_indirect_symbol): Copy has_got_reloc and
	has_non_got_reloc.
	(elf_i386_check_relocs): Set has_got_reloc and has_non_got_reloc.
	(elf_i386_fixup_symbol): New function.
	(elf_i386_pie_finish_undefweak_symbol): Likewise.
	(elf_i386_allocate_dynrelocs): Don't allocate space for dynamic
	relocations and discard relocations against resolved undefined
	weak symbols in executable.  Don't make resolved undefined weak
	symbols in executable dynamic.  Keep dynamic non-GOT/non-PLT
	relocation against undefined weak symbols in PIE.
	(elf_i386_size_dynamic_sections): Set interp to .interp section.
	(elf_i386_relocate_section): Don't generate dynamic relocations
	against resolved undefined weak symbols in PIE, except for
	R_386_PC32.
	(elf_i386_finish_dynamic_symbol): Keep PLT/GOT entries without
	dynamic PLT/GOT relocations for resolved undefined weak symbols.
	Don't generate dynamic relocation against resolved undefined weak
	symbol in executable.
	(elf_i386_finish_dynamic_sections): Call
	elf_i386_pie_finish_undefweak_symbol on all symbols in PIE.
	(elf_backend_fixup_symbol): New.
	* elf64-x86-64.c (UNDEFINED_WEAK_RESOLVED_TO_ZERO): New.
	(elf_x86_64_link_hash_entry): Add has_got_reloc and
	has_non_got_reloc.
	(elf_x86_64_link_hash_table): Add interp.
	(elf_x86_64_link_hash_newfunc): Initialize has_got_reloc and
	has_non_got_reloc.
	(elf_x86_64_copy_indirect_symbol): Copy has_got_reloc and
	has_non_got_reloc.
	(elf_x86_64_check_relocs): Set has_got_reloc and
	has_non_got_reloc.
	(elf_x86_64_fixup_symbol): New function.
	(elf_x86_64_pie_finish_undefweak_symbol): Likewise.
	(elf_x86_64_allocate_dynrelocs): Don't allocate space for dynamic
	relocations and discard relocations against resolved undefined
	weak symbols in executable.  Don't make resolved undefined weak
	symbols in executable dynamic.
	(elf_x86_64_size_dynamic_sections): Set interp to .interp section.
	(elf_x86_64_relocate_section): Check relocation overflow for
	dynamic relocations against unresolved weak undefined symbols.
	Don't generate dynamic relocations against resolved weak
	undefined symbols in PIE.
	(elf_x86_64_finish_dynamic_symbol): Keep PLT/GOT entries without
	dynamic PLT/GOT relocations for resolved undefined weak symbols.
	Don't generate dynamic relocation against resolved undefined weak
	symbol in executable.
	(elf_x86_64_finish_dynamic_sections): Call
	elf_x86_64_pie_finish_undefweak_symbol on all symbols in PIE.
	(elf_backend_fixup_symbol): New.

2016-02-26  Alan Modra  <amodra@gmail.com>

	* elf64-ppc.c (create_linkage_sections): Create sfpr when
	save_restore_funcs, rest of sections when not relocatable.
	(ppc64_elf_init_stub_bfd): Always call create_linkage_sections.
	(sfpr_define): Define all symbols on emitted code.
	(ppc64_elf_func_desc_adjust): Adjust for sfpr now being created
	when relocatable.  Move sfpr_define loop earlier.

2016-02-24  H.J. Lu  <hongjiu.lu@intel.com>

	* elf64-x86-64.c (elf_x86_64_need_pic): New function.
	(elf_x86_64_relocate_section): Use it.  Replace
	x86_64_elf_howto_table[r_type] with howto.

2016-02-24  H.J. Lu  <hongjiu.lu@intel.com>

	PR ld/19698
	* elflink.c (bfd_elf_record_link_assignment): Set versioned if
	symbol version is unknown.

2016-02-24  H.J. Lu  <hongjiu.lu@intel.com>

	* elf32-i386.c (elf_i386_allocate_dynrelocs): Set plt_got.offset
	to (bfd_vma) -1 when setting needs_plt to 0.
	* elf64-x86-64.c (elf_x86_64_allocate_dynrelocs): Likewise.

2016-02-23  H.J. Lu  <hongjiu.lu@intel.com>

	* elflink.c (bfd_elf_record_link_assignment): Check for shared
	library, instead of PIC, and don't check PDE when making linker
	assigned symbol dynamic.

2016-02-23  Faraz Shahbazker  <faraz.shahbazker@imgtec.com>

	* bfd/elfxx-mips.c (_bfd_mips_post_process_headers): Increment
	ABIVERSION for non-executable stack.

2016-02-23  Rich Felker  <bugdal@aerifal.cx>

	PR target/19516
	* elf32-microblaze.c (microblaze_elf_finish_dynamic_symbol):
	Always produce a RELATIVE reloc for a local symbol.

2016-02-23  Hans-Peter Nilsson  <hp@axis.com>

	Fix test-case ld-elf/pr19617b
	* elf32-cris.c (elf_cris_discard_excess_program_dynamics): Don't
	discard unused non-function symbols when --dynamic-list-data.

2016-02-22  H.J. Lu  <hongjiu.lu@intel.com>

	* elflink.c (_bfd_elf_link_renumber_dynsyms): Always create the
	dynsym section, even if it is empty, with dynamic sections.

2016-02-22  H.J. Lu  <hongjiu.lu@intel.com>

	* syms.c: Remove BSF_COMMON from comments.
	* bfd-in2.h: Regenerated.

2016-02-22  Jiong Wang  <jiong.wang@arm.com>

	* elfnn-aarch64. (aarch64_type_of_stub): Remove redundation calcuation
	for destination.  Remove useless function parameters.
	(elfNN_aarch64_size_stubs): Update parameters for aarch64_type_of_stub.

2016-02-19  Nick Clifton  <nickc@redhat.com>

	PR ld/19629
	* aoutx.h (aout_link_add_symbols): Check for out of range string
	table offsets.

	PR ld/19628
	* reloc.c (bfd_generic_get_relocated_section_contents): Stop
	processing if we encounter a reloc without an associated symbol.

2016-02-18  H.J. Lu  <hongjiu.lu@intel.com>

	PR ld/19617
	* elflink.c (elf_link_add_object_symbols): Always create dynamic
	sections for -E/--dynamic-list.

2016-02-17  H.J. Lu  <hongjiu.lu@intel.com>

	* elf64-x86-64.c (elf_backend_omit_section_dynsym): New.  Defined
	to bfd_true.

2016-02-16  Joseph Myers  <joseph@codesourcery.com>

	* plugin.c (plugin_vec): Set match priority to 255.
	* format.c (bfd_check_format_matches) [BFD_SUPPORTS_PLUGINS]: When
	matching against the plugin vector, take priority from there not
	from TEMP.

2016-02-15  Nick Clifton  <nickc@redhat.com>

	* elf-bfd.h (struct bfd_elf_special_section): Use unsigned values
	for length and type fields.  Use a signed value for the
	suffix_length field.

2016-02-10  H.J. Lu  <hongjiu.lu@intel.com>

	PR ld/19601
	* elf32-i386.c (elf_i386_relocate_section): Mask off the least
	significant bit in GOT offset for R_386_GOT32X.

2016-02-10  Nick Clifton  <nickc@redhat.com>

	PR 19405
	* elf32-nios2.c (nios2_elf32_install_imm16): Allow for signed
	immediate values.
	* elf-eh-frame.c (_bfd_elf_discard_section_eh_frame): Limit the
	number of messages about FDE encoding preventing .eh_frame_hdr
	generation.

2016-02-09  Nick Clifton  <nickc@redhat.com>

	* oasys.c (oasys_archive_p): Fix indentation.
	* elf32-nds32.c (nds32_elf_relax_section): Use an unsigned
	constant for left shifting.

	* elfnn-aarch64.c (elfNN_aarch64_relocate_section): Add a more
	helpful warning message to explain why certain AArch64 relocs
	might overflow.

2016-02-05  Simon Marchi  <simon.marchi@ericsson.com>

	* pe-mips.c (coff_mips_reloc): Fix formatting.

2016-02-05  Cupertino Miranda  <Cupertino.Miranda@synopsys.com>

	* cpu-arc.c: Change default archure from bfd_mach_arc_arcv2
	to bfd_mach_arc_arc600.

2016-02-04  Alan Modra  <amodra@gmail.com>

	* elf64-ppc.c (ppc64_elf_relocate_section): Adjust last patch
	for big-endian.

2016-02-02  H.J. Lu  <hongjiu.lu@intel.com>

	PR ld/19542
	* elf64-x86-64.c (elf_x86_64_convert_load): Store the estimated
	distances in the compressed_size field of the output section.

2016-02-02  Alan Modra  <amodra@gmail.com>

	* elf64-ppc.c (ppc64_elf_relocate_section): Further restrict
	ELFv2 entry optimization.

2016-02-02  H.J. Lu  <hongjiu.lu@intel.com>

	PR binutils/19547
	* elf.c (assign_section_numbers): Clear HAS_RELOC if there are
	no relocations in relocatable files.

2016-02-01  H.J. Lu  <hongjiu.lu@intel.com>

	PR ld/19553
	* elflink.c (elf_link_add_object_symbols): Don't add DT_NEEDED
	if a symbol from a library loaded via DT_NEEDED doesn't match
	the symbol referenced by regular object.

2016-02-01  Nathaniel Smith  <njs@pobox.com>

	* peicode.h (pe_ILF_build_a_bfd): Create an import symbol for both
	CODE and DATA.

2016-02-01  Alan Modra  <amodra@gmail.com>

	* elf64-x86-64.c (elf_x86_64_get_plt_sym_val): Don't abort on
	an out of range reloc_index.
	* elf32-i386.c (elf_i386_get_plt_sym_val): Likewise.

2016-02-01  Kamil Rytarowski  <n54@gmx.com>

	* Makefile.am (OPTIONAL_BACKENDS): Add netbsd-core.lo.
	(OPTIONAL_BACKENDS_CFILES): Add netbsd-core.c.
	* Makefile.in: Regenerated.

2016-02-01  Jan Kratochvil  <jan.kratochvil@redhat.com>

	* elf64-s390.c (elf_s390_reloc_name_lookup): Fix indentation.

2016-01-31  John David Anglin  <danglin@gcc.gnu.org>

	PR ld/19526
	* elf32-hppa.c (elf32_hppa_final_link): Don't sort non-regular output
	files.
	* elf64-hppa.c (elf32_hppa_final_link): Likewise.  Remove retval.

2016-01-30  H.J. Lu  <hongjiu.lu@intel.com>

	PR ld/19539
	* elf32-i386.c (elf_i386_reloc_type_class): Check relocation
	against STT_GNU_IFUNC symbol only with dynamic symbols.
	* elf64-x86-64.c (elf_x86_64_reloc_type_class): Likewise.

2016-01-28  H.J. Lu  <hongjiu.lu@intel.com>

	PR binutils/19523
	* dwarf2.c (_bfd_dwarf2_slurp_debug_info): Set BFD_DECOMPRESS to
	decompress debug sections.

2016-01-25  Maciej W. Rozycki  <macro@imgtec.com>

	* elf32-arc.c (elf_arc_finish_dynamic_symbol): Rename `index' to
	`dynindx'.

2016-01-25  Nick Clifton  <nickc@redhat.com>

	PR target/19435
	* mach-o.c (bfd_mach_o_close_and_cleanup): Suppress code to free
	dsym filename buffer.

2016-01-24  Maciej W. Rozycki  <macro@imgtec.com>

	* elfxx-mips.c (BZ16_REG_FIELD): Simplify calculation.

2016-01-24  Maciej W. Rozycki  <macro@imgtec.com>

	* elfxx-mips.c (BZ16_REG): Correct calculation.

2016-01-21  Nick Clifton  <nickc@redhat.com>

	* elf32-arc.c (ADD_RELA): Fix compile time warning errors by
	changing the type of _loc to be bfd_byte *.
	(elf_arc_finish_dynamic_symbol): Likewise.

2016-01-21  Nick Clifton  <nickc@redhat.com>

	PR ld/19455
	* elf32-arm.c (elf32_arm_create_dynamic_sections): Set the ELF
	class of the linker stub bfd.
	(elf32_arm_check_relocs): Skip check for pic format after
	processing a vxWorks R_ARM_ABS12 reloc.
	* elflink.c (bfd_elf_final_link): Check for ELFCLASSNONE when
	reporting a class mismatch.

2016-01-21  Jiong Wang  <jiong.wang@arm.com>

	* elfnn-aarch64.c (aarch64_type_of_stub): Allow insert long branch
	veneer for sym_sec != input_sec.
	(elfNN_aarch64_size_stub): Support STT_SECTION symbol.
	(elfNN_aarch64_final_link_relocate): Take rela addend into account when
	calculation destination.

2016-01-21  Alan Modra  <amodra@gmail.com>

	* elf-linux-core.h (swap_linux_prpsinfo32_out): New function.
	(swap_linux_prpsinfo64_out): New function.
	(LINUX_PRPSINFO32_SWAP_FIELDS): Delete.
	(LINUX_PRPSINFO64_SWAP_FIELDS): Delete.
	* elf.c (elfcore_write_linux_prpsinfo32): Adjust.  Don't memset.
	(elfcore_write_linux_prpsinfo64): Likewise.
	* elf32-ppc.c (swap_ppc_linux_prpsinfo32_out): New function.
	(PPC_LINUX_PRPSINFO32_SWAP_FIELDS): Delete.
	(elfcore_write_ppc_linux_prpsinfo32): Adjust.  Don't memset.

2016-01-21  Alan Modra  <amodra@gmail.com>

	* elf-linux-core.h: Rename from elf-linux-psinfo.h.
	* elf.c: Adjust #include.
	* elf32-ppc.c: Don't #include elf-linux-psinfo.h
	* Makefile.am (SOURCE_HFILES): Update.
	* Makefile.in: Regenerate.
	* po/SRC-PORFILES.in: Regenerate.

2016-01-21  Alan Modra  <amodra@gmail.com>

	* configure.ac: Move corefile selection later in file.  Move
	tdefaults code immediately after other target vector code.
	* configure: Regenerate.

2016-01-20  Mickael Guene  <mickael.guene@st.com>

	* elf32-arm.c (elf32_arm_special_sections): Remove catch of noread
	section using '.text.noread' pattern.

2016-01-19  John Baldwin  <jhb@FreeBSD.org>

	* elf.c (elfcore_grok_note): Recognize NT_FREEBSD_THRMISC notes.

2016-01-18  Miranda Cupertino  <Cupertino.Miranda@synopsys.com>
	    Zissulescu Claudiu  <Claudiu.Zissulescu@synopsys.com>

	* arc-plt.def: New file.
	* arc-plt.h: Likewise.
	* elf32-arc.c (elf_arc_abs_plt0_entry, elf_arc_abs_pltn_entry,
		       elf_arcV2_abs_plt0_entry, elf_arcV2_abs_pltn_entry,
		       elf_arc_pic_plt0_entry, elf_arc_pic_pltn_entry,
		       elf_arcV2_pic_plt0_entry, elf_arcV2_pic_pltn_entry): Remove.
	(name_for_global_symbol): Added.
	(ADD_RELA): Helper to create dynamic relocs.
	(new_got_entry_to_list): Create a new got entry in linked list.
	(symbol_has_entry_of_type): Search for specific type of entry in
	list.
	(is_reloc_for_GOT): return FALSE for any TLS related relocs.
	(is_reloc_for_TLS, arc_elf_set_private_flags)
	(arc_elf_print_private_bfd_data, arc_elf_copy_private_bfd_data)
	(arc_elf_merge_private_bfd_data): New functions.
	(debug_arc_reloc): Cleaned debug info printing.
	(PDATA reloc): Changed not to perform address alignment.
	(reverse_me): Added. Fix for ARC_32 relocs.
	(arc_do_relocation): Return bfd_reloc_of when no relocation should
	occur.
	(arc_get_local_got_ents): Renamed from arc_get_local_got_offsets.
	Changed function to access an array of list of GOT entries instead
	of just an array of offsets.
	(elf_arc_relocate_section): Added support for PIC and TLS related relocations.
	(elf_arc_check_relocs): Likewise.
	(elf_arc_adjust_dynamic_symbol, elf_arc_finish_dynamic_symbol,
	(elf_arc_finish_dynamic_sections): Likewise
	(arc_create_dynamic_sections): Modified conditions to create
	dynamic sections.
	(ADD_SYMBOL_REF_SEC_AND_RELOC): New macro.
	(plt_do_relocs_for_symbol, relocate_plt_for_symbol)
	(relocate_plt_for_entry): Changed to support new way to define PLT
	related code.
	(add_symbol_to_plt): Likewise.
	(arc_elf_link_hash_table_create): New function.

2016-01-18  Nick Clifton  <nickc@redhat.com>

	PR ld/19440
	* coff-rs6000.c (_bfd_xcoff_swap_sym_in): Sign extend external
	section number into internal section number.
	* coff64-rs6000.c (_bfd_xcoff64_swap_sym_in): Likewise.
	* coffswap.h (coff_swap_sym_in): Likewise.
	* peXXigen.c (_bfd_XXi_swap_sym_in): Likewise.
	* coffcode.h (_coff_bigobj_swap_sym_in): Make sure that internal
	section number field is big enough to hold the external value.

2016-01-17  Alan Modra  <amodra@gmail.com>

	* configure: Regenerate.

2016-01-12  Yury Usishchev  <y.usishchev@samsung.com>

	* elf32-arm.c (elf32_arm_fix_exidx_coverage): Insert cantunwind
	when address in first unwind entry does not match start of
	section.

2016-01-08  Richard Sandiford  <richard.sandiford@arm.com>
	    Jiong Wang  <jiong.wang@arm.com>

	PR ld/19368
	* elf32-arm.c (elf32_arm_reloc_type_class): Map R_ARM_IRELATIVE to
	reloc_class_ifunc.

2016-01-06  Andrew Burgess  <andrew.burgess@embecosm.com>

	* elf32-arc.c (reloc_type_to_name): Change ARC_RELOC_HOWTO to
	place 'R_' before the reloc name returned.
	(elf_arc_howto_table): Change ARC_RELOC_HOWTO to place 'R_' before
	the relocation string.

2016-01-04  Maciej W. Rozycki  <macro@imgtec.com>

	* elfxx-mips.c (mips_elf_merge_obj_abiflags): New function,
	factored out from...
	(_bfd_mips_elf_merge_private_bfd_data): ... here.

2016-01-04  Maciej W. Rozycki  <macro@imgtec.com>

	* elfxx-mips.c (_bfd_mips_elf_merge_private_bfd_data): Move
	attribute check after ELF file header flag check.

2016-01-04  Maciej W. Rozycki  <macro@imgtec.com>

	* elfxx-mips.c (mips_elf_merge_obj_attributes): Propagate the
	return status from `_bfd_elf_merge_object_attributes'.

2016-01-04  Maciej W. Rozycki  <macro@imgtec.com>

	* elfxx-mips.c (mips_elf_merge_obj_e_flags): New function,
	factored out from...
	(_bfd_mips_elf_merge_private_bfd_data): ... here.

2016-01-04  Maciej W. Rozycki  <macro@imgtec.com>

	* elfxx-mips.c (_bfd_mips_elf_merge_private_bfd_data): Fold the
	handling of input MIPS ABI flags together.

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.

2016-01-04  Maciej W. Rozycki  <macro@imgtec.com>

	* elfxx-mips.c (_bfd_mips_elf_merge_private_bfd_data): Correct
	an FP ABI warning.

2016-01-01  Alan Modra  <amodra@gmail.com>

	Update year range in copyright notice of all files.

For older changes see ChangeLog-2015 and doc/ChangeLog-0415
\f
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