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2016-02-26[x86] Resolve non-PIC undefweak symbols in executableH.J. Lu1-0/+61
For i386 and x86-64, non-PIC references to undefined weak symbols are resolved without dynamic relocation when creating executable. Resolved undefined weak symbols are removed from the dynamic symbol table in executable. One exception is on i386, we need resolved undefined weak symbols in the dynamic symbol table in PIE if input relocatable files contain branchs without PLT so that we can branch to 0 with dynamic relocation in text section. This makes behaviors of dynamic executable and position independent executable predictable with mixed PIC and non-PIC references to undefined weak symbols. If all references to undefined weak symbols are PIC, dynamic relocations against undefined weak symbols will be generated in executable unless -z nodynamic-undefined-weak is passed to linker. bfd/ 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. include/ PR ld/19636 PR ld/19704 PR ld/19719 * bfdlink.h (bfd_link_info): Add dynamic_undefined_weak. ld/ PR ld/19636 PR ld/19704 PR ld/19719 * Makefile.am (ELF_X86_DEPS): Add dynamic_undefined_weak.sh. * Makefile.in: Regenerated. * NEWS: Mention -z nodynamic-undefined-weak. * ld.texinfo: Document -z nodynamic-undefined-weak. * ldmain.c (main): Initialize dynamic_undefined_weak to -1. * emulparams/dynamic_undefined_weak.sh: New file. * emulparams/elf32_x86_64.sh: Source dynamic_undefined_weak.sh. * emulparams/elf_i386.sh: Likewise. * emulparams/elf_i386_be.sh: Likewise. * emulparams/elf_i386_chaos.sh: Likewise. * emulparams/elf_i386_ldso.sh: Likewise. * emulparams/elf_i386_vxworks.sh: Likewise. * emulparams/elf_iamcu.sh: Likewise. * emulparams/elf_k1om.sh: Likewise. * emulparams/elf_l1om.sh: Likewise. * emulparams/elf_x86_64.sh: Likewise. * emulparams/extern_protected_data.sh (PARSE_AND_LIST_OPTIONS): Append. (PARSE_AND_LIST_ARGS_CASE_Z): Likewise. * testsuite/ld-elf/pr19719a.c: New file. * testsuite/ld-elf/pr19719b.c: Likewise. * testsuite/ld-elf/pr19719c.c: Likewise. * testsuite/ld-elf/pr19719d.c: Likewise. * testsuite/ld-i386/pr19636-1.s: Likewise. * testsuite/ld-i386/pr19636-1a.d: Likewise. * testsuite/ld-i386/pr19636-1b.d: Likewise. * testsuite/ld-i386/pr19636-1c.d: Likewise. * testsuite/ld-i386/pr19636-1d-nacl.d: Likewise. * testsuite/ld-i386/pr19636-1d.d: Likewise. * testsuite/ld-i386/pr19636-1e.d: Likewise. * testsuite/ld-i386/pr19636-1f.d: Likewise. * testsuite/ld-i386/pr19636-1g.d: Likewise. * testsuite/ld-i386/pr19636-1h.d: Likewise. * testsuite/ld-i386/pr19636-1i.d: Likewise. * testsuite/ld-i386/pr19636-2.s: Likewise. * testsuite/ld-i386/pr19636-2a.d: Likewise. * testsuite/ld-i386/pr19636-2b.d: Likewise. * testsuite/ld-i386/pr19636-2c-nacl.d: Likewise. * testsuite/ld-i386/pr19636-2c.d: Likewise. * testsuite/ld-i386/pr19636-2d-nacl.d: Likewise. * testsuite/ld-i386/pr19636-2d.d: Likewise. * testsuite/ld-i386/pr19636-2e-nacl.d: Likewise. * testsuite/ld-i386/pr19636-2e.d: Likewise. * testsuite/ld-i386/pr19636-3.s: Likewise. * testsuite/ld-i386/pr19636-3a.d: Likewise. * testsuite/ld-i386/pr19636-3b.d: Likewise. * testsuite/ld-i386/pr19636-3c.d: Likewise. * testsuite/ld-i386/pr19636-3d.d: Likewise. * testsuite/ld-i386/pr19636-3e.d: Likewise. * testsuite/ld-i386/pr19636-3f.d: Likewise. * testsuite/ld-i386/pr19636-3g.d: Likewise. * testsuite/ld-i386/pr19636-4.s: Likewise. * testsuite/ld-i386/pr19636-4a.d: Likewise. * testsuite/ld-i386/pr19636-4b.d: Likewise. * testsuite/ld-i386/pr19636-4c.d: Likewise. * testsuite/ld-i386/pr19636-4d.d: Likewise. * testsuite/ld-i386/pr19704.out: Likewise. * testsuite/ld-i386/pr19704a.c: Likewise. * testsuite/ld-i386/pr19704b.c: Likewise. * testsuite/ld-x86-64/pr19636-1.s: Likewise. * testsuite/ld-x86-64/pr19636-1a.d: Likewise. * testsuite/ld-x86-64/pr19636-1b.d: Likewise. * testsuite/ld-x86-64/pr19636-1c.d: Likewise. * testsuite/ld-x86-64/pr19636-1d.d: Likewise. * testsuite/ld-x86-64/pr19636-1e.d: Likewise. * testsuite/ld-x86-64/pr19636-1f.d: Likewise. * testsuite/ld-x86-64/pr19636-1g.d: Likewise. * testsuite/ld-x86-64/pr19636-2.s: Likewise. * testsuite/ld-x86-64/pr19636-2a.d: Likewise. * testsuite/ld-x86-64/pr19636-2b.d: Likewise. * testsuite/ld-x86-64/pr19636-2c.d: Likewise. * testsuite/ld-x86-64/pr19636-2d-nacl.d: Likewise. * testsuite/ld-x86-64/pr19636-2d.d: Likewise. * testsuite/ld-x86-64/pr19636-2e.d: Likewise. * testsuite/ld-x86-64/pr19636-2f.d: Likewise. * testsuite/ld-x86-64/pr19636-2g.d: Likewise. * testsuite/ld-x86-64/pr19636-2h.d: Likewise. * testsuite/ld-x86-64/pr19636-2i.d: Likewise. * testsuite/ld-x86-64/pr19636-3.s: Likewise. * testsuite/ld-x86-64/pr19636-3a.d: Likewise. * testsuite/ld-x86-64/pr19636-3b.d: Likewise. * testsuite/ld-x86-64/pr19636-3c.d: Likewise. * testsuite/ld-x86-64/pr19636-3d.d: Likewise. * testsuite/ld-x86-64/pr19704.out: Likewise. * testsuite/ld-x86-64/pr19704a.c: Likewise. * testsuite/ld-x86-64/pr19704b.c: Likewise. * testsuite/ld-elf/shared.exp (mix_pic_and_non_pic): New. Run mix_pic_and_non_pic. * testsuite/ld-i386/i386.exp (undefined_weak): New. Run undefined_weak and PR ld/19636 tests. * testsuite/ld-x86-64/x86-64.exp: Likewise. * testsuite/ld-x86-64/pr13082-3b.d: Updated. * testsuite/ld-x86-64/pr13082-4b.d: Likewise.
2016-02-26Fix powerpc64 -r --save-restore-funcsAlan Modra1-0/+9
* 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.
2016-02-25Add elf_x86_64_need_picH.J. Lu1-0/+6
Add elf_x86_64_need_pic and replace x86_64_elf_howto_table[r_type].name with howto->name. * 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.
2016-02-24Update symbol version for symbol from linker scriptH.J. Lu1-0/+6
We need to update symbol version for symbols from linker script. bfd/ PR ld/19698 * elflink.c (bfd_elf_record_link_assignment): Set versioned if symbol version is unknown. ld/ PR ld/19698 * testsuite/ld-elf/pr19698.d: New file. * testsuite/ld-elf/pr19698.s: Likewise. * testsuite/ld-elf/pr19698.t: Likewise.
2016-02-24Set plt_got.offset to (bfd_vma) -1H.J. Lu1-0/+6
Since plt_got.offset may be updated in x86 allocate_dynrelocs, set plt_got.offset to (bfd_vma) -1 when setting needs_plt to 0. * 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.
2016-02-23Make linker assigned symbol dynamic only for shared objectH.J. Lu1-0/+6
Linker assigned symbols should be made dynamic by default only when creating shared object or relocatable executable. bfd/ * 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. ld/ * testsuite/ld-frv/fdpic-pie-6.d: Updated. * testsuite/ld-mips-elf/pie-n32.d: Likewise. * testsuite/ld-mips-elf/pie-n64.d: Likewise. * testsuite/ld-mips-elf/pie-o32.d: Likewise.
2016-02-23Increment the ABIVERSION to 5 for MIPS objects with non-executable stacks.Faraz Shahbazker1-0/+5
* bfd/elfxx-mips.c (_bfd_mips_post_process_headers): Increment ABIVERSION for non-executable stack.
2016-02-23Fix the genetation of GOT entries for the Microblaze target.Rich Felker1-0/+6
PR target/19516 * elf32-microblaze.c (microblaze_elf_finish_dynamic_symbol): Always produce a RELATIVE reloc for a local symbol.
2016-02-23Fix test-case ld-elf/pr19617bHans-Peter Nilsson1-0/+6
* elf32-cris.c (elf_cris_discard_excess_program_dynamics): Don't discard unused non-function symbols when --dynamic-list-data.
2016-02-22Always create dynsym section with dynamic sectionsH.J. Lu1-0/+5
We should always create the dynsym section, even if it is empty, with dynamic sections. * elflink.c (_bfd_elf_link_renumber_dynsyms): Always create the dynsym section, even if it is empty, with dynamic sections.
2016-02-22Remove BSF_COMMON from commentsH.J. Lu1-0/+5
BSF_COMMON isn't defined in BFD. * syms.c: Remove BSF_COMMON from comments. * bfd-in2.h: Regenerated.
2016-02-22[AArch64] Remove redundant calculation of plt stub destination for veneerJiong Wang1-0/+6
elfNN_aarch64_size_stubs, the caller of aarch64_type_stub has redirected the final destination of long branch veneer to plt stub if the call should go through it. It's redundant to do the same check and redirect again from scratch inside aarch64_type_stub. bfd/ * 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.
2016-02-19Prevent a seg-fault in the linker when accessing a specially crafted, ↵Nick Clifton1-0/+4
corrupt, aout binary. PR ld/19629 * aoutx.h (aout_link_add_symbols): Check for out of range string table offsets.
2016-02-19Fix a seg-fault in the linker when it encounters a corrupt binary containing ↵Nick Clifton1-0/+6
a reloc with no associated symbol. PR ld/19628 * reloc.c (bfd_generic_get_relocated_section_contents): Stop processing if we encounter a reloc without an associated symbol.
2016-02-18Always create dynamic sections for -E/--dynamic-listH.J. Lu1-0/+6
In embedded environments, including boot loaders, the non-PIC executable needs to export its symbols to modules loaded in the future. We should always create dynamic sections for -E/--dynamic-list. bfd/ PR ld/19617 * elflink.c (elf_link_add_object_symbols): Always create dynamic sections for -E/--dynamic-list. ld/ PR ld/19617 * testsuite/ld-elf/pr19617.s: New file. * testsuite/ld-elf/pr19617a.d: Likewise. * testsuite/ld-elf/pr19617b.d: Likewise. * testsuite/ld-elf/pr19617c.d: Likewise.
2016-02-17[x86-64] Omit dynamic sections symbolsH.J. Lu1-0/+5
Define elf_backend_omit_section_dynsym to bfd_true for x86-64, similar to i386, x86-64 doesn't need dynamic sections symbols. bfd/ * elf64-x86-64.c (elf_backend_omit_section_dynsym): New. Defined to bfd_true. ld/ * testsuite/ld-ifunc/ifunc-1-local-x86.d: Updated. * testsuite/ld-ifunc/ifunc-1-x86.d: Likewise. * testsuite/ld-ifunc/ifunc-2-local-x86-64.d: Likewise. * testsuite/ld-ifunc/ifunc-2-x86-64.d: Likewise. * testsuite/ld-ifunc/ifunc-3a-x86.d: Likewise. * testsuite/ld-ifunc/pr17154-x86-64.d: Likewise. * testsuite/ld-x86-64/bnd-ifunc-1.d: Likewise. * testsuite/ld-x86-64/bnd-ifunc-2.d: Likewise. * testsuite/ld-x86-64/bnd-plt-1.d: Likewise. * testsuite/ld-x86-64/ilp32-4-nacl.d: Likewise. * testsuite/ld-x86-64/ilp32-4.d: Likewise. * testsuite/ld-x86-64/load1c-nacl.d: Likewise. * testsuite/ld-x86-64/load1c.d: Likewise. * testsuite/ld-x86-64/load1d-nacl.d: Likewise. * testsuite/ld-x86-64/load1d.d: Likewise. * testsuite/ld-x86-64/pr14207.d: Likewise. * testsuite/ld-x86-64/pr19162.d: Likewise. * testsuite/ld-x86-64/tlsdesc-nacl.rd: Likewise. * testsuite/ld-x86-64/tlsdesc.rd: Likewise. * testsuite/ld-x86-64/tlsgdesc-nacl.rd: Likewise. * testsuite/ld-x86-64/tlsgdesc.rd: Likewise. * testsuite/ld-x86-64/tlspic-nacl.rd: Likewise. * testsuite/ld-x86-64/tlspic.rd: Likewise.
2016-02-16Fix BFD format matching for x86_64-w64-mingw32 -m32 LTO.Joseph Myers1-0/+7
In <https://sourceware.org/ml/binutils/2015-12/msg00190.html> (commit 4a07dc81356ed8728e204e9aabeb256703c59aef), Kwok fixed a problem with the template used for a dummy BFD for an IR file for LTO on MinGW, where the input and output formats are not the same. A problem, however, remains in the case of linking for x86_64-w64-mingw32 -m32, where LTO linking reports an ambiguity between the pe-i386 and pei-i386 formats. An object (pe-i386) with plugin data is being tested by the linker to see what formats match. The default format initially set by the linker when bfd_check_format_matches is called is pei-i386 (as that's the output format from the linker script), which does not match, so the function goes on to the loop over possible BFD vectors. The pe-i386 vector matches, as it should. One other vector matches: the plugin vector. bfd_check_format_matches tests a vector for matching by temporarily modifying the BFD object to use that vector then using _bfd_check_format on it. So the BFD object is temporarily using plugin_vec. _bfd_check_format ends up using bfd_plugin_object_p which uses plugin_object_p from ld which uses plugin_get_ir_dummy_bfd which succeeds, having created a BFD based on link_info.output_bfd (because srctemplate is the BFD temporarily using plugin_vec, even after Kwok's patch link_info.output_bfd is all that's available to base the dummy BFD on). So we end up with a match from the plugin vector which uses the pei-i386 vector even though the pei-i386 vector itself does not match the input object. (In the i686-mingw32 case, as opposed to this multilib case, pe-i386 is the default BFD target, which would short-circuit that logic.) There are two cases of the linker handling inputs with a plugin: they may be inputs that are also accepted by some non-plugin BFD format, as here, or they may be a format that would not be recognized at all, as with some tests in the ld testsuite. In the former case, there is no need for BFD to accept the objects using the plugin vector, as the linker has its own logic to allow plugins to claim objects accepted by some other BFD vector. Thus, this patch arranges for the plugin vector to have the lowest match priority, and for the priority from that vector to be used in the relevant case (the attempted match to the plugin vector results in TEMP pointing to the pei-i386 vector). Tested for GCC and Binutils testsuites for x86_64-pc-linux-gnu, as well as verifying that it fixes the observed LTO issue for x86_64-w64-mingw32. * 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.
2016-02-15Enhance GAS's .section directive so that it can take numeric values for the ↵Nick Clifton1-0/+6
flags and type fields. (ELF only) gas * doc/as.texinfo (.section): Document that numeric values can now be used for the flags and type fields of the ELF target's .section directive. Add notes about the restrictions on setting flags and types. * config/obj-elf.c (obj_elf_change_section): Allow known sections to be given processor specific section types. Allow processor and application specific flags of a section to be set after definition. (obj_elf_parse_section_letters): Handle parsing numeric values. (obj_elf_section_type): Handle parsing numeric values. (obj_elf_section): Allow numeric type values. * config/obj-elf.h (obj_elf_change_section): Update prototype. * testsuite/gas/elf/section10.d: New test. * testsuite/gas/elf/section10.s: Source file for new test. * testsuite/gas/elf/elf.exp: Run the new test. * testsuite/gas/i386/ilp32/x86-64-unwind.d: Remove dependency upon the description of the flags produced by readelf. * testsuite/gas/tic6x/scomm-directive-4.d: Likewise. * NEWS: Mention the new feature. bfd * 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. binutils* readelf.c (get_section_type_name): Add hex prefix to offsets printed for LOPROC and LOOS values. Ensure that a result is always returned for the V850 target, even when an unrecognised processor specific value is encountered. (process_section_headers): Display key values in the order in which they appear to the user. Add the "C (compressed)" value to the list. ld * testsuite/ld-i386/pr12718.d: Remove dependency upon the description of the flags produced by readelf. * testsuite/ld-i386/pr12921.d: Likewise. * testsuite/ld-i386/tlsbin-nacl.rd: Likewise. * testsuite/ld-i386/tlsbin.rd: Likewise. * testsuite/ld-i386/tlsbindesc-nacl.rd: Likewise. * testsuite/ld-i386/tlsbindesc.rd: Likewise. * testsuite/ld-i386/tlsdesc-nacl.rd: Likewise. * testsuite/ld-i386/tlsdesc.rd: Likewise. * testsuite/ld-i386/tlsgdesc-nacl.rd: Likewise. * testsuite/ld-i386/tlsgdesc.rd: Likewise. * testsuite/ld-i386/tlsnopic-nacl.rd: Likewise. * testsuite/ld-i386/tlsnopic.rd: Likewise. * testsuite/ld-i386/tlspic-nacl.rd: Likewise. * testsuite/ld-i386/tlspic.rd: Likewise. * testsuite/ld-s390/tlsbin.rd: Likewise. * testsuite/ld-s390/tlsbin_64.rd: Likewise. * testsuite/ld-s390/tlspic.rd: Likewise. * testsuite/ld-s390/tlspic_64.rd: Likewise. * testsuite/ld-sh/tlsbin-2.d: Likewise. * testsuite/ld-sh/tlspic-2.d: Likewise. * testsuite/ld-tic6x/common.d: Likewise. * testsuite/ld-tic6x/shlib-1.rd: Likewise. * testsuite/ld-tic6x/shlib-1b.rd: Likewise. * testsuite/ld-tic6x/shlib-1r.rd: Likewise. * testsuite/ld-tic6x/shlib-1rb.rd: Likewise. * testsuite/ld-tic6x/shlib-app-1.rd: Likewise. * testsuite/ld-tic6x/shlib-app-1b.rd: Likewise. * testsuite/ld-tic6x/shlib-app-1r.rd: Likewise. * testsuite/ld-tic6x/shlib-app-1rb.rd: Likewise. * testsuite/ld-tic6x/shlib-noindex.rd: Likewise. * testsuite/ld-tic6x/static-app-1.rd: Likewise. * testsuite/ld-tic6x/static-app-1b.rd: Likewise. * testsuite/ld-tic6x/static-app-1r.rd: Likewise. * testsuite/ld-tic6x/static-app-1rb.rd: Likewise. * testsuite/ld-x86-64/ilp32-4-nacl.d: Likewise. * testsuite/ld-x86-64/ilp32-4.d: Likewise. * testsuite/ld-x86-64/pr12718.d: Likewise. * testsuite/ld-x86-64/pr12921.d: Likewise. * testsuite/ld-x86-64/split-by-file-nacl.rd: Likewise. * testsuite/ld-x86-64/split-by-file.rd: Likewise. * testsuite/ld-x86-64/tlsbin-nacl.rd: Likewise. * testsuite/ld-x86-64/tlsbin.rd: Likewise. * testsuite/ld-x86-64/tlsbindesc-nacl.rd: Likewise. * testsuite/ld-x86-64/tlsbindesc.rd: Likewise. * testsuite/ld-x86-64/tlsdesc-nacl.rd: Likewise. * testsuite/ld-x86-64/tlsdesc.rd: Likewise. * testsuite/ld-x86-64/tlsgdesc-nacl.rd: Likewise. * testsuite/ld-x86-64/tlsgdesc.rd: Likewise. * testsuite/ld-x86-64/tlspic-nacl.rd: Likewise. * testsuite/ld-x86-64/tlspic.rd: Likewise. * testsuite/ld-xtensa/tlsbin.rd: Likewise. * testsuite/ld-xtensa/tlspic.rd: Likewise.
2016-02-10Mask off the least significant bit in GOT offsetH.J. Lu1-0/+6
The least significant bit in GOT offset is to record whether we have initialized the GOT entry in R_386_GOT32 processing. We need to mask it off for R_386_GOT32X. PR ld/19601 * elf32-i386.c (elf_i386_relocate_section): Mask off the least significant bit in GOT offset for R_386_GOT32X.
2016-02-10Correct assertion in NIOS2 linker to allow signed 16-buit immediate values.Nick Clifton1-0/+9
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.
2016-02-09Fix compile time warnings building the binutils with a gcc6 compiler.Nick Clifton1-0/+4
include * opcode/metag.h (metag_scondtab): Mark as possibly unused. * opcode/nds32.h (nds32_r45map): Likewise. (nds32_r54map): Likewise. * opcode/visium.h (gen_reg_table): Likewise. (fp_reg_table, cc_table, opcode_table): Likewise. bfd * oasys.c (oasys_archive_p): Fix indentation. * elf32-nds32.c (nds32_elf_relax_section): Use an unsigned constant for left shifting.
2016-02-09Add a more helpful warning message to explain why some AArch64 relocations ↵Nick Clifton1-0/+6
can overflow. bfd * elfnn-aarch64.c (elfNN_aarch64_relocate_section): Add a more helpful warning message to explain why certain AArch64 relocs might overflow. ld * testsuite/ld-aarch64/reloc-overflow-bad.d: New test. * testsuite/ld-aarch64/reloc-overflow-1.s: New source file. * testsuite/ld-aarch64/reloc-overflow-2.s: New source file. * testsuite/ld-aarch64/aarch64-elf.exp: Run the new test.
2016-02-09Revert "Add a more helpful warning message to explain why some AArch64 ↵Walfred Tedeschi1-6/+0
relocations can overflow." This reverts commit 2ea53e003163338a403d5afbb2046cafb8f3abe9.
2016-02-09Add a more helpful warning message to explain why some AArch64 relocations ↵Nick Clifton1-0/+6
can overflow. bfd * elfnn-aarch64.c (elfNN_aarch64_relocate_section): Add a more helpful warning message to explain why certain AArch64 relocs might overflow. ld * testsuite/ld-aarch64/reloc-overflow-bad.d: New test. * testsuite/ld-aarch64/reloc-overflow-1.s: New source file. * testsuite/ld-aarch64/reloc-overflow-2.s: New source file. * testsuite/ld-aarch64/aarch64-elf.exp: Run the new test.
2016-02-05Fix formatting of pe-mips.c file.Simon Marchi1-0/+4
* pe-mips.c (coff_mips_reloc): Fix formatting.
2016-02-05Change the default architecture value for ARC bfds so that they have the ↵Cupertino Miranda1-0/+5
lowest possible value, and hence can be merged with other ARC binaries wihtout changing their architecture value. bfd * cpu-arc.c: Change default archure from bfd_mach_arc_arcv2 to bfd_mach_arc_arc600. binutils * testsuite/binutils-all/objdump.exp: Update expected default architecture value for ARC binaries.
2016-02-04Fix "PowerPC64 ELFv2 entry code" for big-endianAlan Modra1-0/+5
bfd/ * elf64-ppc.c (ppc64_elf_relocate_section): Adjust last patch for big-endian. gold/ * powerpc.cc (relocate): Adjust last patch for big-endian.
2016-02-02Fix typos in bfd/ChangeLog and bfd/elf64-x86-64.cH.J. Lu1-1/+1
2016-02-02Store estimated istrances in compressed_sizeH.J. Lu1-0/+6
elf_x86_64_convert_load is very time consuming since it is called on each input section and has a loop over input text sections to estimate the branch distrance. We can store the estimated distrances in the compressed_size field of the output section, which is only used to decompress the compressed input section. Before the patch, linking clang 3.9 takes 52 seconds. After the patch, it only takes 2.5 seconds. PR ld/19542 * elf64-x86-64.c (elf_x86_64_convert_load): Store the estimated distrances in the compressed_size field of the output section.
2016-02-02PowerPC64 ELFv2 entry codeAlan Modra1-0/+5
This tightens the condition under which ld optimizes PIC entry code to non-PIC. bfd/ * elf64-ppc.c (ppc64_elf_relocate_section): Further restrict ELFv2 entry optimization. gold/ * powerpc.cc (relocate): Further restrict ELFv2 entry optimization.
2016-02-02Clear HAS_RELOC if there are no relocationsH.J. Lu1-0/+6
The HAS_RELOC bit should be cleared when relocations are removed from relocatable files. bfd/ PR binutils/19547 * elf.c (assign_section_numbers): Clear HAS_RELOC if there are no relocations in relocatable files. binutils/ PR binutils/19547 * testsuite/binutils-all/objcopy.exp (objcopy_test_without_global_symbol): New proc. Run objcopy_test_without_global_symbol. * testsuite/binutils-all/pr19547.c: New file.
2016-02-01Don't add DT_NEEDED for unmatched symbolH.J. Lu1-0/+7
Don't add DT_NEEDED if a symbol from a library loaded via DT_NEEDED doesn't match the symbol referenced by regular object. bfd/ 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. ld/testsuite/ PR ld/19553 * testsuite/ld-elf/indirect.exp: Run tests for PR ld/19553. * testsuite/ld-elf/pr19553.map: New file. * testsuite/ld-elf/pr19553.map: Likewise. * testsuite/ld-elf/pr19553a.c: Likewise. * testsuite/ld-elf/pr19553b.c: Likewise. * testsuite/ld-elf/pr19553b.out: Likewise. * testsuite/ld-elf/pr19553c.c: Likewise. * testsuite/ld-elf/pr19553c.out: Likewise. * testsuite/ld-elf/pr19553d.c: Likewise. * testsuite/ld-elf/pr19553d.out: Likewise.
2016-02-01Add support for importing data from ILF images.Nathaniel Smith1-0/+5
* peicode.h (pe_ILF_build_a_bfd): Create an import symbol for both CODE and DATA.
2016-02-01x86 synthetic plt symbolsAlan Modra1-0/+6
Changing "pushq $1" in the following to "pushq $too_big" results in an abort. BFD shouldn't abort on (deliberately) bad user input. 400480: ff 25 9a 0b 20 00 jmpq *0x200b9a(%rip) 400486: 68 01 00 00 00 pushq $0x1 40048b: e9 d0 ff ff ff jmpq 400460 <_init+0x20> * 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.
2016-02-01Fix NetBSD build with BSD and GNU make(1).Kamil Rytarowski1-0/+6
* Makefile.am (OPTIONAL_BACKENDS): Add netbsd-core.lo. (OPTIONAL_BACKENDS_CFILES): Add netbsd-core.c. * Makefile.in: Regenerated.
2016-02-01elf64-s390.c: Fix -Werror=misleading-indentationJan Kratochvil1-0/+4
../../bfd/elf64-s390.c: In function 'elf_s390_reloc_name_lookup': ../../bfd/elf64-s390.c:340:5: error: statement is indented as if it were guarded by... [-Werror=misleading-indentation] if (strcasecmp (elf64_s390_vtinherit_howto.name, r_name) == 0) ^~ ../../bfd/elf64-s390.c:333:3: note: ...this 'for' clause, but it is not for (i = 0; ^~~ bfd/ * elf64-s390.c (elf_s390_reloc_name_lookup): Fix indentation.
2016-01-31Fix /usr/bin/ld: final link failed: File truncated error on hppa.John David Anglin1-0/+7
2016-01-30Check reloc against IFUNC symbol only with dynamic symbolsH.J. Lu1-0/+7
There is no need to check relocation IFUNC symbol if there are no dynamic symbols. bfd/ 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. ld/ PR ld/19539 * testsuite/ld-elf/pr19539.d: New file. * testsuite/ld-elf/pr19539.s: Likewise. * testsuite/ld-elf/pr19539.t: Likewise.
2016-01-28Set BFD_DECOMPRESS to decompress debug sectionsH.J. Lu1-0/+6
We should set BFD_DECOMPRESS to decompress debug sections when reading in DWARF debug sections. bfd/ PR binutils/19523 * dwarf2.c (_bfd_dwarf2_slurp_debug_info): Set BFD_DECOMPRESS to decompress debug sections. binutils/ PR binutils/19523 * Makefile.am (check-DEJAGNU): Pass CC and CC_FOR_BUILD to runtest. * Makefile.in: Regenerated. * testsuite/binutils-all/compress.exp (test_gnu_debuglink): New proc. Run test_gnu_debuglink for native ELF build.
2016-01-25ARC/BFD: Fix a build error from `index' shadowing a global declarationMaciej W. Rozycki1-0/+5
bfd/ * elf32-arc.c (elf_arc_finish_dynamic_symbol): Rename `index' to `dynindx'.
2016-01-25Fix memory corruption on Mach-O systems by suppressing a memory tidy up.Nick Clifton1-0/+6
PR target/19435 * mach-o.c (bfd_mach_o_close_and_cleanup): Suppress code to free dsym filename buffer.
2016-01-24MIPS/BFD: Simplify register index calculation in BZ16_REG_FIELDMaciej W. Rozycki1-0/+4
Just mask higher bits off, which returns the same set of 3-bit register encodings of { 0, 1, 2, 3, 4, 5, 6, 7 } for the allowed 5-bit encodings of { 16, 17, 2, 3, 4, 5, 6, 7 }. Input has already been validated with OP16_VALID_REG. bfd/ * elfxx-mips.c (BZ16_REG_FIELD): Simplify calculation.
2016-01-24MIPS/BFD: Correct register index calculation in BZ16_REGMaciej W. Rozycki1-0/+4
For the 3-bit register encodings of { 0, 1, 2, 3, 4, 5, 6, 7 } return the 5-bit encodings of { 16, 17, 2, 3, 4, 5, 6, 7 } respectively rather than { 24, 25, 2, 3, 4, 5, 6, 7 }. bfd/ * elfxx-mips.c (BZ16_REG): Correct calculation.
2016-01-21Fix compile time errors building ARC target on a 32-bit host.Nick Clifton1-0/+6
* 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.
2016-01-21Fix unexpected failures in the linker testsuite for ARM VxWorks targets.Nick Clifton1-0/+10
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. * testsuite/ld-arm/vxworks1-lib.dd: Update for current disassmebler output. * testsuite/ld-arm/vxworks1-lib.rd: Likewise. * testsuite/ld-arm/vxworks1.dd: Likewise. * testsuite/ld-arm/vxworks1.rd: Likewise. * testsuite/ld-arm/vxworks1.ld: Set the output format.
2016-01-21[AArch64] Relax long branch veneer insertion for non STT_FUNC symbolJiong Wang1-0/+8
As defined at AArch64 ELF Specification (4.6.7 Call and Jump relocations), symbol with type of non STT_FUNC but in different input section with relocation place should insert long branch veneer also. Meanwhile the current long branch veneer infrastructure havn't considered the situation where the branch destination is "sym_value + rela->addend". This was OK because we only insert veneer for long call destination is STT_FUNC symbol for which the addend is always zero. But as we relax the support to other situations by this patch, we need to handle addend be non-zero value. For example, for static function, relocation against "local symbol" are turned into relocation against "section symbol + offset" where there is a valid addend. bfd/ * 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. ld/ * testsuite/ld-aarch64/farcall-section.d: Delete. * testsuite/ld-aarch64/farcall-section.s: Delete. * testsuite/ld-aarch64/farcall-b-section.d: New expectation file. * testsuite/ld-aarch64/farcall-bl-section.d: Likewise. * testsuite/ld-aarch64/farcall-b-section.s: New testcase. * testsuite/ld-aarch64/farcall-bl-section.s: Likewise. * testsuite/ld-aarch64/aarch64-elf.exp: Likewise.
2016-01-21Convert macros in elf-linux-core.h to inline functionsAlan Modra1-0/+12
Besides changing some macros into inline functions, this removes redundant memsets and uses bfd_put_* rather than H_PUT_*. * 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.
2016-01-21Rename elf-linux-psinfo.h to elf-linux-core.hAlan Modra1-0/+9
Since it will sometime have more than just prpsinfo. Also, elf32-ppc.c needlessly includes this header. * 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.
2016-01-21bfd/configure reorganisationAlan Modra1-0/+6
Corefile code should be moved after running config.bfd, because it uses want64. * configure.ac: Move corefile selection later in file. Move tdefaults code immediately after other target vector code. * configure: Regenerate.
2016-01-20Add support for an ARM specific 'y' section attribute flag to mark the ↵Mickael Guene1-0/+5
section as NOREAD. bfd/ChangeLog: * elf32-arm.c ((elf32_arm_special_sections): Remove catch of noread section using '.text.noread' pattern. gas/ChangeLog: * config/obj-elf.c (obj_elf_change_section) : Allow arm section with SHF_ARM_NOREAD section flag. * config/tc-arm.h (md_elf_section_letter) : Implement this hook to handle letter 'y'. (arm_elf_section_letter) : Declare it. * config/tc-arm.c (arm_elf_section_letter): Handle letter 'y' to set SHF_ARM_NOREAD section flag. * doc/c-arm.texi (ARM section attribute 'y'): Document it. gas/testsuite/ChangeLog: * gas/arm/section-execute-only.s: New test case. * gas/arm/section-execute-only.d: Expected output. ld/testsuite/ChangeLog: * ld-arm/thumb1-noread-not-present-mixing-two-section.s: Add 'y' attribute usage. * ld-arm/thumb1-noread-present-one-section.s: Likewise. * ld-arm/thumb1-noread-present-two-section.s: Likewise. * ld-arm/thumb1-input-section-flag-match.s: Likewise. binutils/ChangeLog: * readelf.c (get_elf_section_flags): Display y letter for section with SHF_ARM_NOREAD section flag in readelf section output. (process_section_headers): Add y letter in readelf section output key mapping for ARM architecture.
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