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* bfd, ld: add CTF section linkingNick Alcock2019-10-031-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This is quite complicated because the CTF section's contents depend on the final contents of the symtab and strtab, because it has two sections whose contents are shuffled to be in 1:1 correspondence with the symtab, and an internal strtab that gets deduplicated against the ELF strtab (with offsets adjusted to point into the ELF strtab instead). It is also compressed if large enough, so its size depends on its contents! So we cannot construct it as early as most sections: we cannot even *begin* construction until after the symtab and strtab are finalized. Thankfully there is already one section treated similarly: compressed debugging sections: the only differences are that compressed debugging sections have extra handling to deal with their changing name if compressed (CTF sections are always called ".ctf" for now, though we have reserved ".ctf.*" against future use), and that compressed debugging sections have previously-uncompressed content which has to be stashed away for later compression, while CTF sections have no content at all until we generate it (very late). BFD also cannot do the link itself: libctf knows how to do it, and BFD cannot call libctf directly because libctf already depends on bfd for file I/O. So we have to use a pair of callbacks, one, examine_strtab, which allows a caller to examine the symtab and strtab after finalization (called from elf_link_swap_symbols_out(), right before the symtabs are written, and after the strtab has been finalized), and one which actually does the emission (called emit_ctf simply because it is grouped with a bunch of section-specific late-emission function calls at the bottom of bfd_elf_final_link, and a section-specific name seems best for that). emit_ctf is actually called *twice*: once from lang_process if the emulation suggests that this bfd target does not examine the symtab or strtab, and once via a bfd callback if it does. (This means that non-ELF targets still get CTF emitted, even though the late CTF emission stage is never called for them). v2: merged with non-ELF support patch: slight commit message adjustments. v3: do not spend time merging CTF, or crash, if the CTF section is explicitly discarded. Do not try to merge or compress CTF unless linking. v4: add CTF_COMPRESSION_THRESHOLD. Annul the freed input ctf_file_t's after writeout: set SEC_IN_MEMORY on the output contents so a future bfd enhancement knows it could free it. Add SEC_LINKER_CREATED | SEC_KEEP to avoid having to add .ctf to the linker script. Drop now-unnecessary ldlang.h-level elf-bfd.h include and hackery around it. Adapt to elf32.em->elf.em and elf-generic.em->ldelf*.c changes. v5: fix tabdamage. Drop #inclusions in .h files: include in .c files, .em files, and use struct forwards instead. Use bfd_section_is_ctf inline function rather than SECTION_IS_CTF macro. Move a few comments. * Makefile.def (dependencies): all-ld depends on all-libctf. * Makefile.in: Regenerated. include/ * bfdlink.h (elf_strtab_hash): New forward. (elf_sym_strtab): Likewise. (struct bfd_link_callbacks <examine_strtab>): New. (struct bfd_link_callbacks <emit_ctf>): Likewise. bfd/ * elf-bfd.h (bfd_section_is_ctf): New inline function. * elf.c (special_sections_c): Add ".ctf". (assign_file_positions_for_non_load_sections): Note that compressed debugging sections etc are not assigned here. Treat CTF sections like SEC_ELF_COMPRESS sections when is_linker_output: sh_offset -1. (assign_file_positions_except_relocs): Likewise. (find_section_in_list): Note that debugging and CTF sections, as well as reloc sections, are assigned later. (_bfd_elf_assign_file_positions_for_non_load): CTF sections get their size and contents updated. (_bfd_elf_set_section_contents): Skip CTF sections: unlike compressed sections, they have no uncompressed content to copy at this stage. * elflink.c (elf_link_swap_symbols_out): Call the examine_strtab callback right before the strtab is written out. (bfd_elf_final_link): Don't cache the section contents of CTF sections: they are not populated yet. Call the emit_ctf callback right at the end, after all the symbols and strings are flushed out. ld/ * ldlang.h: (struct lang_input_statement_struct): Add the_ctf. (struct elf_sym_strtab): Add forward. (struct elf_strtab_hash): Likewise. (ldlang_ctf_apply_strsym): Declare. (ldlang_write_ctf_late): Likewise. * ldemul.h (ldemul_emit_ctf_early): New. (ldemul_examine_strtab_for_ctf): Likewise. (ld_emulation_xfer_type) <emit_ctf_early>: Likewise. (ld_emulation_xfer_type) <examine_strtab_for_ctf>: Likewise. * ldemul.c (ldemul_emit_ctf_early): New. (ldemul_examine_strtab_for_ctf): Likewise. * ldlang.c: Include ctf-api.h. (CTF_COMPRESSION_THRESHOLD): New. (ctf_output): New. Initialized in... (ldlang_open_ctf): ... this new function. Open all the CTF sections in the input files: mark them non-loaded and empty so as not to copy their contents to the output, but linker-created so the section gets created in the target. (ldlang_merge_ctf): New, merge types via ctf_link_add_ctf and ctf_link. (ldlang_ctf_apply_strsym): New, an examine_strtab callback: wrap ldemul_examine_strtab_for_ctf. (lang_write_ctf): New, write out the CTF section. (ldlang_write_ctf_late): New, late call via bfd's emit_ctf hook. (lang_process): Call ldlang_open_ctf, ldlang_merge_ctf, and lang_write_ctf. * ldmain.c (link_callbacks): Add ldlang_ctf_apply_strsym, ldlang_write_ctf_late. * emultempl/aix.em: Add ctf-api.h. * emultempl/armcoff.em: Likewise. * emultempl/beos.em: Likewise. * emultempl/elf.em: Likewise. * emultempl/generic.em: Likewise. * emultempl/linux.em: Likewise. * emultempl/msp430.em: Likewise. * emultempl/pe.em: Likewise. * emultempl/pep.em: Likewise. * emultempl/ticoff.em: Likewise. * emultempl/vanilla.em: Likewise. * ldcref.c: Likewise. * ldctor.c: Likewise. * ldelf.c: Likewise. * ldelfgen.c: Likewise. * ldemul.c: Likewise. * ldexp.c: Likewise. * ldfile.c: Likewise. * ldgram.c: Likewise. * ldlex.l: Likewise. * ldmain.c: Likewise. * ldmisc.c: Likewise. * ldver.c: Likewise. * ldwrite.c: Likewise. * lexsup.c: Likewise. * mri.c: Likewise. * pe-dll.c: Likewise. * plugin.c: Likewise. * ldelfgen.c (ldelf_emit_ctf_early): New. (ldelf_examine_strtab_for_ctf): tell libctf about the symtab and strtab. (struct ctf_strsym_iter_cb_arg): New, state to do so. (ldelf_ctf_strtab_iter_cb): New: tell libctf about each string in the strtab in turn. (ldelf_ctf_symbols_iter_cb): New, tell libctf about each symbol in the symtab in turn. * ldelfgen.h (struct elf_sym_strtab): Add forward. (struct elf_strtab_hash): Likewise. (struct ctf_file): Likewise. (ldelf_emit_ctf_early): Declare. (ldelf_examine_strtab_for_ctf): Likewise. * emultempl/elf-generic.em (LDEMUL_EMIT_CTF_EARLY): Set it. (LDEMUL_EXAMINE_STRTAB_FOR_CTF): Likewise. * emultempl/aix.em (ld_${EMULATION_NAME}_emulation): Add emit_ctf_early and examine_strtab_for_ctf, NULL by default. * emultempl/armcoff.em (ld_${EMULATION_NAME}_emulation): Likewise. * emultempl/beos.em (ld_${EMULATION_NAME}_emulation): Likewise. * emultempl/elf.em (ld_${EMULATION_NAME}_emulation): Likewise. * emultempl/generic.em (ld_${EMULATION_NAME}_emulation): Likewise. * emultempl/linux.em (ld_${EMULATION_NAME}_emulation): Likewise. * emultempl/msp430.em (ld_${EMULATION_NAME}_emulation): Likewise. * emultempl/pe.em (ld_${EMULATION_NAME}_emulation): Likewise. * emultempl/pep.em (ld_${EMULATION_NAME}_emulation): Likewise. * emultempl/ticoff.em (ld_${EMULATION_NAME}_emulation): Likewise. * emultempl/vanilla.em (ld_vanilla_emulation): Likewise. * Makefile.am: Pull in libctf (and zlib, a transitive requirement for compressed CTF section emission). Pass it on to DejaGNU. * configure.ac: Add AM_ZLIB. * aclocal.m4: Added zlib.m4. * Makefile.in: Regenerated. * testsuite/ld-bootstrap/bootstrap.exp: Use it when relinking ld.
* -Bsymbolic is not for PIEsAlan Modra2019-10-021-42/+55
| | | | | | | | | | | | | Despite PR19615, it doesn't make sense to use -Bsymbolic with PIEs. Dynamic symbols in an executable won't be overridden anyway. * ld.texi (-Bsymbolic, -Bsymbolic-functions): Don't mention PIEs. * ld.h (symbolic_enum, dynamic_list_enum), (args_type <symbolic, dynamic_list>): Move to.. * lexsup.c (parse_args): ..here, using auto vars opt_symbolic and opt_dynamic_list rather than command_line fields. Only act on -Bsymbolic and -Bsymbolic-functions for shared library output. Free dynamic_list.
* stat_alloc castsAlan Modra2019-08-101-1/+1
| | | | | | | | | | | | | Casts from a void* just clutter the source. * ldexp.c (exp_intop, exp_bigintop, exp_relop, exp_binop, exp_trinop), (exp_unop, exp_nameop, exp_assop, exp_assert): Remove casts of stat_alloc return value. * ldlang.c (new_statement, new_afile, sort_def_symbol), (lang_memory_region_lookup, lang_memory_region_alias), (ldlang_add_undef, ldlang_add_require_defined, insert_pad), (lang_add_gc_name, lang_new_phdr): Likewise. * lexsup.c (set_segment_start): Likewise.
* PR24806, Linking with -T inside --start-group/--end-groupAlan Modra2019-08-011-0/+1
| | | | | | | | | | | | | | This patch processes INSERT AFTER and INSERT BEFORE in a user -T script when such a script is invoked on the command line inside --start-group/--end-group. Also, ld now warns when the user simply forgot --end-group. PR 24806 * ldlang.c (process_insert_statements): Add start of list parameter. Use rather than lang_os_list.head. Process insert statements inside group statements with a recursive call. (lang_process): Adjust process_insert_statements call. * lexsup.c (parse_args): Warn when adding missing --end-group.
* Have the linker report an error if the same script is used twice.Nick Clifton2019-05-221-1/+1
| | | | | | | | | | | | | | PR 24576 * ld/ldfile.c: (ldfile_open_command_file_1): Add new parameter - is_script. If true check that the file has not already been parsed as a linker script. (ldfile_open_script_file): New function. (ldfile_try_open_bfd): Use the new function in place of ldfile_open_command_line. * ldmain.c (main): Likewise. * lexsup.c (parse_args): Use the new function for opening linker scripts with the -T option. * ldfile.h (ldfile_open_script_file): Add prototype.
* ld: Add --no-print-map-discarded optionFaraz Shahbazker2019-04-111-0/+14
| | | | | | | | | | | | | | | | | | | | | | | | | | Add a new option to disable the listing of discarded sections in map file output. The use case stems from a large application built with -ffunction-sections --gc-sections where the list of discarded sections blows up the map file output. The default behaviour remains to print discarded sections, but the new option allows us to disable it. ld/ * NEWS: Mention new option --no-print-map-discarded. * ld.h (ld_config_type) <print_map_discarded>: New field. * ldlang.c (lang_map): Conditionally output discarded sections in map files based on configuration option. * ldlex.h (option_values) <OPTION_PRINT_MAP_DISCARDED, OPTION_NO_PRINT_MAP_DISCARDED>: New. * ldmain.c (main): Enabled print_map_discarded by default. * lexsup.c (ld_options): Add new command-line options. (parse_args) <OPTION_NO_PRINT_MAP_DISCARDED, OPTION_PRINT_MAP_DISCARDED>: New cases. * ld.texi: Document new options. * testsuite/ld-gc/gc.exp: Add new test. * testsuite/ld-gc/skip-map-discarded.s: New file. * testsuite/ld-gc/skip-map-discarded.d: New file. * testsuite/ld-gc/skip-map-discarded.map: New file.
* Update year range in copyright notice of binutils filesAlan Modra2019-01-011-1/+1
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* Report scripts and libraries searched for ld --traceAlan Modra2018-10-291-1/+1
| | | | | | | | | | | | | | | | | | | The idea of this change is to make -t output useful for users wanting to package all the object files involved in linking for a bug report. Something like the following should do the trick. gcc hello.c -save-temps -Wl,-t | xargs realpath | sort | uniq > files tar cJf test.tar.xz `cat files` * ldlang.c (load_symbols): When -t, print file names for script files and archives. * ldmain.c (trace_files): Make an int. (add_archive_element): Print archive elements only with multiple -t options, or when archive is thin. * ldmain.h (trace_files): Update. * ldmisc.c (vfinfo): Don't print both original path and path in sysroot. * lexsup.c (parse_args <t>): Increment trace_files.
* ld: Properly display default for -z separate-codeH.J. Lu2018-07-041-0/+7
| | | | | | | | Check DEFAULT_LD_Z_SEPARATE_CODE to display default for -z separate-code. PR ld/23358 * lexsup.c (elf_shlib_list_options): Properly display default for -z separate-code.
* [MicroBlaze] PIC data text relativeMichael Eager2018-04-171-0/+8
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Andrew Sadek <andrew.sadek.se@gmail.com> A new implemented feature in GCC Microblaze that allows Position Independent Code to run using Data Text Relative addressing instead of using Global Offset Table. Its aim was to make 'PIC' more efficient and flexible as elf size excess performance overhead were noticed when using GOT due to the indirect addressing. include/ChangeLog: * bfdlink.h (Add flag): Add new flag @ 'bfd_link_info' struct. * elf/microblaze.h (Add 3 new relocations): R_MICROBLAZE_TEXTPCREL_64, R_MICROBLAZE_TEXTREL_64 and R_MICROBLAZE_TEXTREL_32_LO for relax function. bfd/ChangeLog: * bfd/reloc.c (2 new BFD relocations): BFD_RELOC_MICROBLAZE_64_TEXTPCREL & BFD_RELOC_MICROBLAZE_64_TEXTPCREL * bfd/bfd-in2.h: Regenerate * bfd/libbfd.h: Regenerate * bfd/elf32-microblaze.c (Handle new relocs): define 'HOWTO' of 3 new relocs and handle them in both relocate and relax functions. (microblaze_elf_reloc_type_lookup): add mapping between for new bfd relocs. (microblaze_elf_relocate_section): Handle new relocs in case of elf relocation. (microblaze_elf_relax_section): Handle new relocs for elf relaxation. gas/ChangeLog: * gas/config/tc-microblaze.c (Handle new relocs directives in assembler): Handle new relocs from compiler output. (imm_types): add new imm types for data text relative addressing TEXT_OFFSET, TEXT_PC_OFFSET (md_convert_frag): conversion for BFD_RELOC_MICROBLAZE_64_TEXTPCREL, BFD_RELOC_MICROBLAZE_64_TEXTPCREL (md_apply_fix): apply fix for BFD_RELOC_MICROBLAZE_64_TEXTPCREL, BFD_RELOC_MICROBLAZE_64_TEXTPCREL (md_estimate_size_before_relax): estimate size for BFD_RELOC_MICROBLAZE_64_TEXTPCREL, BFD_RELOC_MICROBLAZE_64_TEXTPCREL (tc_gen_reloc): generate relocations for BFD_RELOC_MICROBLAZE_64_TEXTPCREL, BFD_RELOC_MICROBLAZE_64_TEXTPCREL ld/ChangeLog: * ld/lexsup.c (Add 2 ld options): (ld_options): add disable-multiple-abs-defs @ 'ld_options' array (parse_args): parse new option and pass flag to 'link_info' struct. * ld/ldlex.h (Add enum): add new enum @ 'option_values' enum. * ld/ld.texinfo (Add new option): Add description for 'disable-multiple-abs-defs' * ld/main.c: Initialize flags with false @ 'main'. Handle disable-multiple-abs-defs @ 'mutiple_definition'.
* ld error/warning messagesAlan Modra2018-02-261-31/+33
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch standardizes messages in ld, to better conform to the GNU coding standard. Besides issues of capitalization and full-stops, I've - Split up help messages for target options, so that adding a new option does not mean loss of translation for all the others. - Embedded tabs have been removed, since a user might have tab stops set at other than 8 char intervals. - Added missing program name (%P). ld isn't the compiler. - Put %F and %X first (and removed %X if %F was present). These can go anywhere, but look silly in the m%Fiddle of a message, and choosing "%P%F:" in some messages but "%F%P:" in others leads to the likelihood of duplication in ld.pot. Besides, the colon belongs with %P. * emulparams/call_nop.sh, * emulparams/cet.sh, * emulparams/elf32mcore.sh, * emultempl/aarch64elf.em * emultempl/aix.em, * emultempl/alphaelf.em, * emultempl/armcoff.em, * emultempl/armelf.em, * emultempl/avrelf.em, * emultempl/beos.em, * emultempl/bfin.em, * emultempl/cr16elf.em, * emultempl/elf32.em, * emultempl/elf-generic.em, * emultempl/hppaelf.em, * emultempl/linux.em, * emultempl/lnk960.em, * emultempl/m68hc1xelf.em, * emultempl/m68kcoff.em, * emultempl/m68kelf.em, * emultempl/metagelf.em, * emultempl/mipself.em, * emultempl/mmix-elfnmmo.em, * emultempl/mmo.em, * emultempl/msp430.em, * emultempl/nds32elf.em, * emultempl/nios2elf.em, * emultempl/pe.em, * emultempl/pep.em, * emultempl/ppc32elf.em, * emultempl/ppc64elf.em, * emultempl/scoreelf.em, * emultempl/sh64elf.em, * emultempl/spuelf.em, * emultempl/sunos.em, * emultempl/tic6xdsbt.em, * emultempl/ticoff.em, * emultempl/v850elf.em, * emultempl/vms.em, * emultempl/vxworks.em, * emultempl/xtensaelf.em, * ldcref.c, * ldctor.c, * ldexp.c, * ldfile.c, * ldgram.y, * ldlang.c, * ldmain.c, * ldmisc.c, * ldwrite.c, * lexsup.c, * mri.c, * pe-dll.c, * plugin.c: Standardize error/warning messages. * testsuite/ld-arc/jli-overflow.err, * testsuite/ld-arm/cmse-implib-errors.out, * testsuite/ld-arm/cmse-new-earlier-later-implib.out, * testsuite/ld-arm/cmse-new-implib-not-sg-in-implib.out, * testsuite/ld-arm/cmse-new-wrong-implib.out, * testsuite/ld-arm/cmse-veneers-no-gnu_sgstubs.out, * testsuite/ld-arm/cmse-veneers-wrong-entryfct.out, * testsuite/ld-arm/vxworks1-static.d, * testsuite/ld-cris/tls-err-20x.d, * testsuite/ld-cris/tls-err-29.d, * testsuite/ld-cris/tls-err-31.d, * testsuite/ld-cris/tls-err-33.d, * testsuite/ld-cris/tls-err-35.d, * testsuite/ld-cris/tls-err-37.d, * testsuite/ld-cris/tls-err-39.d, * testsuite/ld-cris/tls-err-41.d, * testsuite/ld-cris/tls-err-43.d, * testsuite/ld-cris/tls-err-45.d, * testsuite/ld-cris/tls-err-47.d, * testsuite/ld-cris/tls-err-49.d, * testsuite/ld-cris/tls-err-51.d, * testsuite/ld-cris/tls-err-67.d, * testsuite/ld-elf/dwarf2.err, * testsuite/ld-elf/dwarf3.err, * testsuite/ld-elf/orphan-5.l, * testsuite/ld-elf/orphan-6.l, * testsuite/ld-i386/vxworks1-static.d, * testsuite/ld-mips-elf/bal-jalx-pic-micromips-n32.d, * testsuite/ld-mips-elf/bal-jalx-pic-micromips-n64.d, * testsuite/ld-mips-elf/bal-jalx-pic-micromips.d, * testsuite/ld-mips-elf/bal-jalx-pic-n32.d, * testsuite/ld-mips-elf/bal-jalx-pic-n64.d, * testsuite/ld-mips-elf/bal-jalx-pic.d, * testsuite/ld-mips-elf/jal-global-overflow-1.d, * testsuite/ld-mips-elf/jal-local-overflow-1.d, * testsuite/ld-mips-elf/mode-change-error-1.d, * testsuite/ld-mips-elf/unaligned-branch-2.d, * testsuite/ld-mips-elf/unaligned-branch-ignore-2.d, * testsuite/ld-mips-elf/unaligned-branch-ignore-micromips.d, * testsuite/ld-mips-elf/unaligned-branch-ignore-mips16.d, * testsuite/ld-mips-elf/unaligned-branch-ignore-r6-1.d, * testsuite/ld-mips-elf/unaligned-branch-micromips.d, * testsuite/ld-mips-elf/unaligned-branch-mips16.d, * testsuite/ld-mips-elf/unaligned-branch-r6-1.d, * testsuite/ld-mips-elf/unaligned-branch-r6-2.d, * testsuite/ld-mips-elf/unaligned-branch.d, * testsuite/ld-mips-elf/unaligned-jalx-1.d, * testsuite/ld-mips-elf/unaligned-jalx-3.d, * testsuite/ld-mips-elf/unaligned-jalx-addend-1.d, * testsuite/ld-mips-elf/unaligned-jalx-addend-3.d, * testsuite/ld-mips-elf/unaligned-jalx-addend-micromips-1.d, * testsuite/ld-mips-elf/unaligned-jalx-addend-mips16-1.d, * testsuite/ld-mips-elf/unaligned-jalx-micromips-1.d, * testsuite/ld-mips-elf/unaligned-jalx-mips16-1.d, * testsuite/ld-mips-elf/unaligned-jump-micromips.d, * testsuite/ld-mips-elf/unaligned-jump-mips16.d, * testsuite/ld-mips-elf/unaligned-jump.d, * testsuite/ld-mips-elf/unaligned-ldpc-1.d, * testsuite/ld-mips-elf/unaligned-lwpc-1.d, * testsuite/ld-mips-elf/undefined.d, * testsuite/ld-mips-elf/vxworks1-static.d, * testsuite/ld-mmix/bpo-20.d, * testsuite/ld-mmix/bpo-20m.d, * testsuite/ld-mmix/bpo-7.d, * testsuite/ld-mmix/bpo-7m.d, * testsuite/ld-mmix/bpo-8.d, * testsuite/ld-mmix/bpo-8m.d, * testsuite/ld-mmix/greg-17.d, * testsuite/ld-mmix/greg-18.d, * testsuite/ld-mmix/greg-8.d, * testsuite/ld-mmix/greg-9.d, * testsuite/ld-plugin/plugin-14.d, * testsuite/ld-plugin/plugin-15.d, * testsuite/ld-plugin/plugin-16.d, * testsuite/ld-plugin/plugin-20.d, * testsuite/ld-plugin/plugin-21.d, * testsuite/ld-plugin/plugin-22.d, * testsuite/ld-plugin/plugin-23.d, * testsuite/ld-plugin/plugin-6.d, * testsuite/ld-plugin/plugin-7.d, * testsuite/ld-plugin/plugin-8.d, * testsuite/ld-powerpc/aix-weak-3-32.d, * testsuite/ld-powerpc/aix-weak-3-64.d, * testsuite/ld-powerpc/vxworks1-static.d, * testsuite/ld-sh/vxworks1-static.d, * testsuite/ld-sparc/vxworks1-static.d, * testsuite/ld-undefined/undefined.exp, * testsuite/ld-x86-64/pie1.d: Update for changed errors and warnings. * testsuite/ld-elf/warn1.d, * testsuite/ld-elf/warn2.d: Correct regex.
* ld: Add "-z separate-code" option to ELF linkerH.J. Lu2018-01-111-0/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | The new "-z separate-code" option will generate separate code LOAD segment which must be in wholly disjoint pages from any other data. include/ PR ld/22393 * bfdlink.h (bfd_link_info): Add separate_code. ld/ PR ld/22393 * NEWS: Mention "-z separate-code". * emultempl/elf32.em (gld${EMULATION_NAME}_get_script): Get builtin linker scripts and return linker scripts from disk for "-z separate-code". (gld${EMULATION_NAME}_handle_option): Handle "-z separate-code" and "-z noseparate-code". * genscripts.sh: Generate linker scripts for "-z separate-code". (LD_FLAG): Set to *textonly for "-z separate-code". * ld.texinfo: Document "-z separate-code". * lexsup.c (elf_shlib_list_options): Add linker help messsages for "-z separate-code" and "-z noseparate-code". * scripttempl/elf.sc (SEPARATE_TEXT): New (TEXT_SEGMENT_ALIGN): Likewise. Use ${TEXT_SEGMENT_ALIGN} to align and pad text segment to ${MAXPAGESIZE}.
* Update year range in copyright notice of binutils filesAlan Modra2018-01-031-1/+1
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* ld whitespace fixesAlan Modra2017-10-121-21/+21
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * pe-dll.c: Formatting, whitespace fixes. * NEWS: Whitespace fixes. * configure.ac: Likewise. * configure.tgt: Likewise. * deffilep.y: Likewise. * genscripts.sh: Likewise. * ld.texinfo: Likewise. * ldgram.y: Likewise. * ldlang.c: Likewise. * ldlex.l: Likewise. * lexsup.c: Likewise. * plugin.c: Likewise. * emulparams/arc-endianness.sh: Likewise. * emulparams/elf32_x86_64.sh: Likewise. * emulparams/elf64mmix.sh: Likewise. * emulparams/elf_x86_64.sh: Likewise. * emulparams/h8300elf.sh: Likewise. * emulparams/h8300elf_linux.sh: Likewise. * emulparams/vxworks.sh: Likewise. * emultempl/aarch64elf.em: Likewise. * emultempl/aix.em: Likewise. * emultempl/armelf.em: Likewise. * emultempl/avrelf.em: Likewise. * emultempl/beos.em: Likewise. * emultempl/hppaelf.em: Likewise. * emultempl/m68kcoff.em: Likewise. * emultempl/m68kelf.em: Likewise. * emultempl/metagelf.em: Likewise. * emultempl/msp430.em: Likewise. * emultempl/nds32elf.em: Likewise. * emultempl/pe.em: Likewise. * emultempl/pep.em: Likewise. * emultempl/ppc64elf.em: Likewise. * emultempl/sh64elf.em: Likewise. * emultempl/spu_ovl.S: Likewise. * emultempl/spuelf.em: Likewise. * emultempl/tic6xdsbt.em: Likewise. * emultempl/ticoff.em: Likewise. * emultempl/vms.em: Likewise. * po/Make-in: Likewise. * scripttempl/DWARF.sc: Likewise. * scripttempl/aix.sc: Likewise. * scripttempl/alpha.sc: Likewise. * scripttempl/alphavms.sc: Likewise. * scripttempl/aout.sc: Likewise. * scripttempl/arclinux.sc: Likewise. * scripttempl/armaout.sc: Likewise. * scripttempl/armbpabi.sc: Likewise. * scripttempl/armcoff.sc: Likewise. * scripttempl/avr.sc: Likewise. * scripttempl/crisaout.sc: Likewise. * scripttempl/delta68.sc: Likewise. * scripttempl/dlx.sc: Likewise. * scripttempl/elf.sc: Likewise. * scripttempl/elf32cr16.sc: Likewise. * scripttempl/elf32cr16c.sc: Likewise. * scripttempl/elf32crx.sc: Likewise. * scripttempl/elf32msp430.sc: Likewise. * scripttempl/elf32msp430_3.sc: Likewise. * scripttempl/elf32sh-symbian.sc: Likewise. * scripttempl/elf32xc16x.sc: Likewise. * scripttempl/elf32xc16xl.sc: Likewise. * scripttempl/elf32xc16xs.sc: Likewise. * scripttempl/elf64hppa.sc: Likewise. * scripttempl/elf_chaos.sc: Likewise. * scripttempl/elfarc.sc: Likewise. * scripttempl/elfarcv2.sc: Likewise. * scripttempl/elfd10v.sc: Likewise. * scripttempl/elfd30v.sc: Likewise. * scripttempl/elfi370.sc: Likewise. * scripttempl/elfm68hc11.sc: Likewise. * scripttempl/elfm68hc12.sc: Likewise. * scripttempl/elfmicroblaze.sc: Likewise. * scripttempl/elfxgate.sc: Likewise. * scripttempl/elfxtensa.sc: Likewise. * scripttempl/epiphany_4x4.sc: Likewise. * scripttempl/epocpe.sc: Likewise. * scripttempl/h8300.sc: Likewise. * scripttempl/h8300h.sc: Likewise. * scripttempl/h8300hn.sc: Likewise. * scripttempl/h8300s.sc: Likewise. * scripttempl/h8300sn.sc: Likewise. * scripttempl/h8300sx.sc: Likewise. * scripttempl/h8300sxn.sc: Likewise. * scripttempl/h8500.sc: Likewise. * scripttempl/h8500b.sc: Likewise. * scripttempl/h8500c.sc: Likewise. * scripttempl/h8500m.sc: Likewise. * scripttempl/h8500s.sc: Likewise. * scripttempl/hppaelf.sc: Likewise. * scripttempl/i386beos.sc: Likewise. * scripttempl/i386coff.sc: Likewise. * scripttempl/i386go32.sc: Likewise. * scripttempl/i386msdos.sc: Likewise. * scripttempl/i860coff.sc: Likewise. * scripttempl/i960.sc: Likewise. * scripttempl/ia64vms.sc: Likewise. * scripttempl/ip2k.sc: Likewise. * scripttempl/iq2000.sc: Likewise. * scripttempl/m68kaux.sc: Likewise. * scripttempl/m68kcoff.sc: Likewise. * scripttempl/m88kbcs.sc: Likewise. * scripttempl/mcorepe.sc: Likewise. * scripttempl/mep.sc: Likewise. * scripttempl/mips.sc: Likewise. * scripttempl/mipsbsd.sc: Likewise. * scripttempl/mmo.sc: Likewise. * scripttempl/moxie.sc: Likewise. * scripttempl/nds32elf.sc: Likewise. * scripttempl/nw.sc: Likewise. * scripttempl/pe.sc: Likewise. * scripttempl/pep.sc: Likewise. * scripttempl/pj.sc: Likewise. * scripttempl/ppcpe.sc: Likewise. * scripttempl/psos.sc: Likewise. * scripttempl/riscix.sc: Likewise. * scripttempl/sh.sc: Likewise. * scripttempl/sparccoff.sc: Likewise. * scripttempl/st2000.sc: Likewise. * scripttempl/tic30aout.sc: Likewise. * scripttempl/tic30coff.sc: Likewise. * scripttempl/tic4xcoff.sc: Likewise. * scripttempl/tic54xcoff.sc: Likewise. * scripttempl/tic80coff.sc: Likewise. * scripttempl/v850.sc: Likewise. * scripttempl/v850_rh850.sc: Likewise. * scripttempl/vanilla.sc: Likewise. * scripttempl/visium.sc: Likewise. * scripttempl/w65.sc: Likewise. * scripttempl/xstormy16.sc: Likewise. * scripttempl/z80.sc: Likewise. * scripttempl/z8000.sc: Likewise. * configure: Regenerate.
* Add -z globalaudit linker command line option to set the DF_GLOBALAUDIT flag ↵Nick Clifton2017-08-111-0/+2
| | | | | | | | | | | | | | | bit in the dynamic tags. * emultempl/elf32.em (handle_option): Accept the -z globalaudit command line option. * lexsup.c (elf_static_list_options): Add -z globalaudit. * ld.texinfo: Document the support for the new command line option. * NEWS: Mention the new feature. * testsuite/ld-elf/audit.exp: Add a test of the -z globalaudit command line option. * testsuite/ld-elf/globalaudit.rd: New file: Expected output from readelf.
* Treat common symbol as undefined for --no-define-commonH.J. Lu2017-08-061-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When --no-define-common is used to build shared library, treat common symbol as undefined so that common symbols that are referenced from a shared library to be assigned addresses only in the main program. This eliminates the unused duplicate space in the shared library, and also prevents any possible confusion over resolving to the wrong duplicate when there are many dynamic modules with specialized search paths for runtime symbol resolution. --no-define-common is only allowed when building a shared library. bfd/ PR ld/21903: * elflink.c (elf_link_add_object_symbols): Treat common symbol as undefined for --no-define-common. include/ PR ld/21903: * bfdlink.h (bfd_link_info): Add inhibit_common_definition. ld/ PR ld/21903: * ld.h (command_line): Remove inhibit_common_definition. * ldgram.y: Replace command_line.inhibit_common_definition with link_info.inhibit_common_definition. * ldlang.c (lang_common): Likewise. * lexsup.c (parse_args): Likewise. * ldmain.c (main): Only allow --no-define-common with -shared. * testsuite/ld-elf/pr21903.s: New file. * testsuite/ld-elf/pr21903a.d: Likewise. * testsuite/ld-elf/pr21903b.d: Likewise. * testsuite/ld-elf/pr21903c.d: Likewise. * testsuite/ld-elf/pr21903d.d: Likewise. * testsuite/ld-elf/pr21903e.d: Likewise.
* Correct "ld --help" to display "-z stack-size=SIZE"H.J. Lu2017-06-151-1/+1
| | | | | | | | ELF Linker command line option to set stack size is "-z stack-size=SIZE", not "-z stacksize=SIZE". * exsup.c (elf_shlib_list_options): Display "-z stack-size=SIZE" instead of "-z stacksize=SIZE".
* ld: Allow section groups to be resolved as part of a relocatable linkAndrew Burgess2017-06-061-0/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This commit adds a new linker feature: the ability to resolve section groups as part of a relocatable link. Currently section groups are automatically resolved when performing a final link, and are carried through when performing a relocatable link. By carried through this means that one copy of each section group (from all the copies that might be found in all the input files) is placed into the output file. Sections that are part of a section group will not match input section specifiers within a linker script and are forcibly kept as separate sections. There is a slight resemblance between section groups and common section. Like section groups, common sections are carried through when performing a relocatable link, and resolved (allocated actual space) only at final link time. However, with common sections there is an ability to force the linker to allocate space for the common sections when performing a relocatable link, there's currently no such ability for section groups. This commit adds such a mechanism. This new facility can be accessed in two ways, first there's a command line switch --force-group-allocation, second, there's a new linker script command FORCE_GROUP_ALLOCATION. If one of these is used when performing a relocatable link then the linker will resolve the section groups as though it were performing a final link, the section group will be deleted, and the members of the group will be placed like normal input sections. If there are multiple copies of the group (from multiple input files) then only one copy of the group members will be placed, the duplicate copies will be discarded. Unlike common sections that have the --no-define-common command line flag, and INHIBIT_COMMON_ALLOCATION linker script command there is no way to prevent group resolution during a final link, this is because the ELF gABI specifically prohibits the presence of SHT_GROUP sections in a fully linked executable. However, the code as written should make adding such a feature trivial, setting the new resolve_section_groups flag to false during a final link should work as you'd expect. bfd/ChangeLog: * elf.c (_bfd_elf_make_section_from_shdr): Don't initially mark SEC_GROUP sections as SEC_EXCLUDE. (bfd_elf_set_group_contents): Replace use of abort with an assert. (assign_section_numbers): Use resolve_section_groups flag instead of relocatable link type. (_bfd_elf_init_private_section_data): Use resolve_section_groups flag instead of checking the final_link flag for part of the checks in here. Fix white space as a result. * elflink.c (elf_link_input_bfd): Use resolve_section_groups flag instead of relocatable link type. (bfd_elf_final_link): Likewise. include/ChangeLog: * bfdlink.h (struct bfd_link_info): Add new resolve_section_groups flag. ld/ChangeLog: * ld.h (struct args_type): Add force_group_allocation field. * ldgram.y: Add support for FORCE_GROUP_ALLOCATION. * ldlex.h: Likewise. * ldlex.l: Likewise. * lexsup.c: Likewise. * ldlang.c (unique_section_p): Check resolve_section_groups flag not the relaxable link flag. (lang_add_section): Discard section groups when we're resolving groups. Clear the SEC_LINK_ONCE flag if we're resolving section groups. * ldmain.c (main): Initialise resolve_section_groups flag in link_info based on command line flags. * testsuite/ld-elf/group11.d: New file. * testsuite/ld-elf/group12.d: New file. * testsuite/ld-elf/group12.ld: New file. * NEWS: Mention new features. * ld.texinfo (Options): Document --force-group-allocation. (Miscellaneous Commands): Document FORCE_GROUP_ALLOCATION.
* Update year range in copyright notice of all files.Alan Modra2017-01-021-1/+1
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* Implement and document --gc-keep-exportedfincs2016-12-161-0/+6
| | | | | | | | | | | | | include/ * bfdlink.h (struct bfd_link_info): Add gc_keep_exported. bfd/ * elflink.c (bfd_elf_gc_mark_dynamic_ref_symbol): Add handling for info->gc_keep_exported. (bfd_elf_gc_sections): Likewise. ld/ * ld.texinfo: Document --gc-keep-exported. * ldlex.h (enum option_values): Add OPTION_GC_KEEP_EXPORTED. * lexsup.c (parse_args): Add handling for --gc-keep-exported.
* lexsup.c (parse_args): Add break at end of default case.Nick Clifton2016-11-141-0/+1
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* -Wimplicit-fallthrough warning fixesAlan Modra2016-10-061-1/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Comment changes. bfd/ * coff-h8300.c: Spell fall through comments consistently. * coffgen.c: Likewise. * elf32-hppa.c: Likewise. * elf32-ppc.c: Likewise. * elf32-score.c: Likewise. * elf32-score7.c: Likewise. * elf64-ppc.c: Likewise. * elfxx-aarch64.c: Likewise. * elfxx-mips.c: Likewise. * cpu-ns32k.c: Add missing fall through comments. * elf-m10300.c: Likewise. * elf32-arm.c: Likewise. * elf32-avr.c: Likewise. * elf32-bfin.c: Likewise. * elf32-frv.c: Likewise. * elf32-i386.c: Likewise. * elf32-microblaze.c: Likewise. * elf32-nds32.c: Likewise. * elf32-ppc.c: Likewise. * elf32-rl78.c: Likewise. * elf32-rx.c: Likewise. * elf32-s390.c: Likewise. * elf32-sh.c: Likewise. * elf32-tic6x.c: Likewise. * elf64-ia64-vms.c: Likewise. * elf64-ppc.c: Likewise. * elf64-s390.c: Likewise. * elf64-x86-64.c: Likewise. * elflink.c: Likewise. * elfnn-aarch64.c: Likewise. * elfnn-ia64.c: Likewise. * ieee.c: Likewise. * oasys.c: Likewise. * pdp11.c: Likewise. * srec.c: Likewise. * versados.c: Likewise. opcodes/ * aarch64-opc.c: Spell fall through comments consistently. * i386-dis.c: Likewise. * aarch64-dis.c: Add missing fall through comments. * aarch64-opc.c: Likewise. * arc-dis.c: Likewise. * arm-dis.c: Likewise. * i386-dis.c: Likewise. * m68k-dis.c: Likewise. * mep-asm.c: Likewise. * ns32k-dis.c: Likewise. * sh-dis.c: Likewise. * tic4x-dis.c: Likewise. * tic6x-dis.c: Likewise. * vax-dis.c: Likewise. binutils/ * dlltool.c: Spell fall through comments consistently. * objcopy.c: Likewise. * readelf.c: Likewise. * dwarf.c: Add missing fall through comments. * elfcomm.c: Likewise. * sysinfo.y: Likewise. * readelf.c: Likewise. Also remove extraneous comments. gas/ * app.c: Add missing fall through comments. * dw2gencfi.c: Likewise. * expr.c: Likewise. * config/tc-alpha.c: Likewise. * config/tc-arc.c: Likewise. * config/tc-arm.c: Likewise. * config/tc-cr16.c: Likewise. * config/tc-crx.c: Likewise. * config/tc-dlx.c: Likewise. * config/tc-h8300.c: Likewise. * config/tc-hppa.c: Likewise. * config/tc-i370.c: Likewise. * config/tc-i386.c: Likewise. * config/tc-i960.c: Likewise. * config/tc-ia64.c: Likewise. * config/tc-m68hc11.c: Likewise. * config/tc-m68k.c: Likewise. * config/tc-mep.c: Likewise. * config/tc-metag.c: Likewise. * config/tc-microblaze.c: Likewise. * config/tc-mips.c: Likewise. * config/tc-ns32k.c: Likewise. * config/tc-rx.c: Likewise. * config/tc-score.c: Likewise. * config/tc-score7.c: Likewise. * config/tc-sh.c: Likewise. * config/tc-tic4x.c: Likewise. * config/tc-vax.c: Likewise. * config/tc-xstormy16.c: Likewise. * config/tc-z80.c: Likewise. * config/tc-z8k.c: Likewise. * config/obj-elf.c: Likewise. * config/tc-i386.c: Likewise. * depend.c: Spell fall through comments consistently. * config/tc-arm.c: Likewise. * config/tc-d10v.c: Likewise. * config/tc-i960.c: Likewise. * config/tc-ia64.c: Likewise. * config/tc-m68k.c: Likewise. * config/tc-mcore.c: Likewise. * config/tc-mep.c: Likewise. * config/tc-ns32k.c: Likewise. * config/tc-visium.c: Likewise. * config/tc-xstormy16.c: Likewise. * config/tc-z8k.c: Likewise. gprof/ * gprof.c: Add missing fall through comments. ld/ * lexsup.c: Spell fall through comments consistently and add missing fall through comments.
* Add support for disabling automatic generation of .eh_frame_hdr sections in ↵Nick Clifton2016-09-141-0/+2
| | | | | | | | | | | | ELF based linkers. PR ld/20537 * emultempl/elf32.em: More OPTION_xxx values into an enum. Add OPTION_NO_EH_FRAME_HDR. (_add_options): Add support for --no-eh-frame-hdr. * ld.texinfo: Document new option. * lexsup.c (elf_shlib_list_options): List new option. * NEWS: Mention the new option.
* Add support for creating ELF import librariesThomas Preud'homme2016-07-151-0/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 2016-07-15 Thomas Preud'homme <thomas.preudhomme@arm.com> bfd/ * elf-bfd.h (elf_backend_filter_implib_symbols): Declare backend hook. (_bfd_elf_filter_global_symbols): Declare. * elf.c (_bfd_elf_filter_global_symbols): New function. * elflink.c (elf_filter_global_symbols): Likewise. (elf_output_implib): Likewise. (bfd_elf_final_link): Call above function, failing if it does. * elfxx-target.h (elf_backend_filter_implib_symbols): Define macro and default it to NULL. (elf_backend_copy_indirect_symbol): Fix spacing. (elf_backend_hide_symbol): Likewise. (elfNN_bed): Initialize elf_backend_filter_implib_symbols backend hook. include/ * bfdlink.h (struct bfd_link_info): Declare new ldscript_def and out_implib_bfd fields. 2016-07-15 Thomas Preud'homme <thomas.preudhomme@arm.com> Nick Clifton <nickc@redhat.com> ld/ * emultempl/elf32.em (gld${EMULATION_NAME}_after_open): Open import library file for writing and initialize implib_bfd field of link_info structure. * emultempl/pe.em (pe_implib_filename): Remove variable declaration. (OPTION_IMPLIB_FILENAME): Remove macro definition. (gld${EMULATION_NAME}_add_options): Remove --out-implib option. (gld_${EMULATION_NAME}_list_options): Likewise. (gld${EMULATION_NAME}_handle_option): Likewise. (gld_${EMULATION_NAME}_finish): Use command_line.out_implib_filename instead of pe_implib_filename. * emultempl/pep.em (pep_implib_filename): Remove variable declaration. (OPTION_IMPLIB_FILENAME): Remove enumerator. (gld${EMULATION_NAME}_add_options): Remove --out-implib option. (gld_${EMULATION_NAME}_list_options): Likewise. (gld${EMULATION_NAME}_handle_option): Likewise. (gld_${EMULATION_NAME}_finish): Use command_line.out_implib_filename instead of pep_implib_filename. * ld.h (args_type): Declare new out_implib_filename field. * ld.texinfo (--out-implib): Move documentation to arch-independent part and rephrase to apply to ELF targets. * ldexp.c (exp_fold_tree_1): Set ldscript_def field to 1 for symbols defined in linker scripts. * ldlex.h (enum option_values): Declare new OPTION_OUT_IMPLIB enumerator. * lexsup.c (ld_options): Add entry for new --out-implib switch. (parse_args): Handle OPTION_OUT_IMPLIB case. * testsuite/ld-elf/elf.exp (Generate empty import library): New test. (Generate import library): Likewise. * testsuite/ld-elf/implib.s: Likewise. * testsuite/ld-elf/implib.rd: New file. * testsuite/ld-elf/empty-implib.out: Likewise
* Allow a second -T<section>=<addr> to override a previous version on the same ↵Nick Clifton2016-06-271-0/+1
| | | | | | | | | | linker command line. PR ld/20302 * lexsup.c (set_segment_start): If resetting the start address of a section, remember to generate a new script element as well. * testsuite/ld-scripts/pr20302.d: New test. * testsuite/ld-scripts/scripts.exp: Run the new test.
* Check DEFAULT_LD_Z_RELRO for -z relro help messageH.J. Lu2016-06-241-1/+8
| | | | | * lexsup.c (elf_shlib_list_options): Check DEFAULT_LD_Z_RELRO for -z relro help message.
* Properly implement STT_COMMONH.J. Lu2016-02-261-0/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The BFD configure option, --enable-elf-stt-common, can't be to used to verify STT_COMMON implementation with the normal binutils build. Instead, this patch removes it from BFD. It adds --elf-stt-common=[no|yes] to ELF assembler/objcopy and adds -z common/-z nocommon to ld. A configure option, --enable-elf-stt-common, is added to gas to specify whether ELF assembler should generate common symbols with the STT_COMMON type by default. Since BSF_KEEP_G is never used, it is renamed to BSF_ELF_COMMON for ELF common symbols. bfd/ 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. binutils/ PR ld/19645 * NEWS: Mention --elf-stt-common= for objcopy. * doc/binutils.texi: Document --elf-stt-common= for objcopy. * objcopy.c (do_elf_stt_common): New. (command_line_switch): Add OPTION_ELF_STT_COMMON. (copy_options): Add --elf-stt-common=. (copy_usage): Add --elf-stt-common=. (copy_object): Also check do_elf_stt_common for ELF targets. (copy_file): Handle do_elf_stt_common. (copy_main): Handle OPTION_ELF_STT_COMMON. * readelf.c (apply_relocations): Support STT_COMMON. * testsuite/binutils-all/common-1.s: New file. * testsuite/binutils-all/common-1a.d: Likewise. * testsuite/binutils-all/common-1b.d: Likewise. * testsuite/binutils-all/common-1c.d: Likewise. * testsuite/binutils-all/common-1d.d: Likewise. * testsuite/binutils-all/common-1e.d: Likewise. * testsuite/binutils-all/common-1f.d: Likewise. * testsuite/binutils-all/common-2.s: Likewise. * testsuite/binutils-all/common-2a.d: Likewise. * testsuite/binutils-all/common-2b.d: Likewise. * testsuite/binutils-all/common-2c.d: Likewise. * testsuite/binutils-all/common-2d.d: Likewise. * testsuite/binutils-all/common-2e.d: Likewise. * testsuite/binutils-all/common-2f.d: Likewise. * testsuite/binutils-all/objcopy.exp (objcopy_test_elf_common_symbols): New proc. Run objcopy_test_elf_common_symbols for ELF targets gas/ PR ld/19645 * NEWS: Mention --enable-elf-stt-common and --elf-stt-common= for ELF assemblers. * as.c (flag_use_elf_stt_common): New. (show_usage): Add --elf-stt-common=. (option_values): Add OPTION_ELF_STT_COMMON. (std_longopts): Add --elf-stt-common=. (parse_args): Handle --elf-stt-common=. * as.h (flag_use_elf_stt_common): New. * config.in: Regenerated. * configure: Likewise. * configure.ac: Add --enable-elf-stt-common and define DEFAULT_GENERATE_ELF_STT_COMMON. * gas/write.c (write_object_file): Set BFD_CONVERT_ELF_COMMON and BFD_USE_ELF_STT_COMMON if flag_use_elf_stt_common is set. * doc/as.texinfo: Document --elf-stt-common=. * testsuite/gas/elf/common3.s: New file. * testsuite/gas/elf/common3a.d: Likewise. * testsuite/gas/elf/common3b.d: Likewise. * testsuite/gas/elf/common4.s: Likewise. * testsuite/gas/elf/common4a.d: Likewise. * testsuite/gas/elf/common4b.d: Likewise. * testsuite/gas/i386/dw2-compress-3b.d: Likewise. * testsuite/gas/i386/dw2-compressed-3b.d: Likewise. * testsuite/gas/elf/elf.exp: Run common3a, common3b, common4a and common4b. * testsuite/gas/i386/dw2-compress-3.d: Renamed to ... * testsuite/gas/i386/dw2-compress-3a.d: This. Pass --elf-stt-common=no to as. * testsuite/gas/i386/dw2-compressed-3.d: Renamed to ... * testsuite/gas/i386/dw2-compressed-3a.d: This. Pass --elf-stt-common=no to as. * testsuite/gas/i386/i386.exp: Run dw2-compress-3a, dw2-compress-3b, dw2-compressed-3a and dw2-compressed-3b instead of dw2-compress-3 and dw2-compressed-3. include/ PR ld/19645 * bfdlink.h (bfd_link_elf_stt_common): New enum. (bfd_link_info): Add elf_stt_common. ld/ PR ld/19645 * NEWS: Mention -z common/-z nocommon for ELF targets. * emultempl/elf32.em (gld${EMULATION_NAME}_handle_option): Handle -z common and -z nocommon. * ld.texinfo: Document -z common/-z nocommon. * lexsup.c (elf_shlib_list_options): Add -z common/-z nocommon. * testsuite/ld-elf/tls_common.exp: Test --elf-stt-common=no and --elf-stt-common=yes with assembler. * testsuite/ld-elfcomm/common-1.s: New file. * testsuite/ld-elfcomm/common-1a.d: Likewise. * testsuite/ld-elfcomm/common-1b.d: Likewise. * testsuite/ld-elfcomm/common-1c.d: Likewise. * testsuite/ld-elfcomm/common-1d.d: Likewise. * testsuite/ld-elfcomm/common-1e.d: Likewise. * testsuite/ld-elfcomm/common-1f.d: Likewise. * testsuite/ld-elfcomm/common-2.s: Likewise. * testsuite/ld-elfcomm/common-2a.d: Likewise. * testsuite/ld-elfcomm/common-2b.d: Likewise. * testsuite/ld-elfcomm/common-2c.d: Likewise. * testsuite/ld-elfcomm/common-2d.d: Likewise. * testsuite/ld-elfcomm/common-2e.d: Likewise. * testsuite/ld-elfcomm/common-2f.d: Likewise. * testsuite/ld-elfcomm/common-3a.rd: Likewise. * testsuite/ld-elfcomm/common-3b.rd: Likewise. * testsuite/ld-i386/pr19645.d: Likewise. * testsuite/ld-i386/pr19645.s: Likewise. * testsuite/ld-x86-64/largecomm-1.s: Likewise. * testsuite/ld-x86-64/largecomm-1a.d: Likewise. * testsuite/ld-x86-64/largecomm-1b.d: Likewise. * testsuite/ld-x86-64/largecomm-1c.d: Likewise. * testsuite/ld-x86-64/largecomm-1d.d: Likewise. * testsuite/ld-x86-64/largecomm-1e.d: Likewise. * testsuite/ld-x86-64/largecomm-1f.d: Likewise. * testsuite/ld-x86-64/pr19645.d: Likewise. * testsuite/ld-x86-64/pr19645.s: Likewise. * testsuite/ld-elfcomm/elfcomm.exp: Test --elf-stt-common=yes with assembler. (assembler_generates_commons): Removed. Run -z common/-z nocommon tests. Run *.d tests. * testsuite/ld-i386/i386.exp: Run pr19645. * testsuite/ld-x86-64/x86-64.exp: Likewise. * testsuite/ld-x86-64/dwarfreloc.exp: Test --elf-stt-common with assembler. Test STT_COMMON with readelf.
* Enable -Bsymbolic and -Bsymbolic-functions to PIEH.J. Lu2016-02-111-6/+5
| | | | | | | | | | | | | | | | | | Before binutils 2.26, -Bsymbolic and -Bsymbolic-functions were also applied to PIE so that "ld -pie -Bsymbolic -E" can be used to export symbols in PIE with local binding. This patch re-enables -Bsymbolic and -Bsymbolic-functions for PIE. PR ld/19615 * ld.texinfo: Document -Bsymbolic and -Bsymbolic-functions for PIE. * lexsup.c (parse_args): Enable -Bsymbolic and -Bsymbolic-functions for PIE. * testsuite/ld-i386/i386.exp: Run pr19175. * testsuite/ld-i386/pr19615.d: New file. * testsuite/ld-i386/pr19615.s: Likewise. * testsuite/ld-x86-64/pr19615.d: Likewise. * testsuite/ld-x86-64/pr19615.s: Likewise.
* Copyright update for binutilsAlan Modra2016-01-011-1/+1
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* Fix reporting of command line options that need an argument, but which occur ↵Nick Clifton2015-10-291-4/+25
| | | | | | | | | as the last option on the command line. PR ld/19146 * lexsup.c (parse_args): Correct error message for an option that is missing its argument if that option is the last one on the command line.
* Reset x86 Linux targets to not compressing debug sections by default. ↵Nick Clifton2015-10-211-0/+7
| | | | | | | | | | | | | | | | | | | | | | | | | | Enable compression of debug sections by default in the linker, if so configured. PR gas/19109 . * configure.ac: Note the 'none' is an acceptable argument to --enable-compressed-debug-sections. * configure: Regenerate. gas * configure.ac: Restore --enable-compressed-debug-sections. Do not enable compressed debug sections by default for x86 Linux targets. * configure: Regenerate. ld * configure.ac: Add --enable-compressed-debug-sections. * configure: Regenerate. * config.in: Regenerate. * ld.texinfo: Document how to determine the default action for debug sections. * ldmain.c (main): If DEFAULT_FLAG_COMPRESS_DEBUG is defined then set the compress_debug field of the link_info structure to zlib-gabi. * lexsup.c (elf_static_list_options): Output the default setting for the --compress-debug-sections option. * NEWS: Mention the new configure option.
* Add --no-dynamic-linker option to ld, for static PIE useRich Felker2015-09-201-0/+7
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Inhibits output of .interp section in ELF executables. include/ * bfdlink.h (struct bfd_link_info): Add "nointerp" field. bfd/ * elflink.c (_bfd_elf_link_create_dynamic_sections): Don't create .interp when info->nointerp. (bfd_elf_size_dynamic_sections): Adjust assert. * elf32-arm.c (elf32_arm_size_dynamic_sections): Don't size .interp when info->nointerp. * elf32-bfin.c (elf32_bfinfdpic_size_dynamic_sections): Likewise. * elf32-cr16.c (_bfd_cr16_elf_size_dynamic_sections): Likewise. * elf32-cris.c (elf_cris_size_dynamic_sections): Likewise. * elf32-frv.c (elf32_frvfdpic_size_dynamic_sections): Likewise. * elf32-hppa.c (elf32_hppa_size_dynamic_sections): Likewise. * elf32-i370.c (i370_elf_size_dynamic_sections): Likewise. * elf32-i386.c (elf_i386_size_dynamic_sections): Likewise. * elf32-lm32.c (lm32_elf_size_dynamic_sections): Likewise. * elf32-m32r.c (m32r_elf_size_dynamic_sections): Likewise. * elf32-m68k.c (elf_m68k_size_dynamic_sections): Likewise. * elf32-metag.c (elf_metag_size_dynamic_sections): Likewise. * elf32-nds32.c (nds32_elf_size_dynamic_sections): Likewise. * elf32-nios2.c (nios2_elf32_size_dynamic_sections): Likewise. * elf32-or1k.c (or1k_elf_size_dynamic_sections): Likewise. * elf32-ppc.c (ppc_elf_size_dynamic_sections): Likewise. * elf32-s390.c (elf_s390_size_dynamic_sections): Likewise. * elf32-score.c (s3_bfd_score_elf_size_dynamic_sections): Likewise. * elf32-score7.c (s7_bfd_score_elf_size_dynamic_sections): Likewise. * elf32-sh.c (sh_elf_size_dynamic_sections): Likewise. * elf32-tic6x.c (elf32_tic6x_size_dynamic_sections): Likewise. * elf32-tilepro.c (tilepro_elf_size_dynamic_sections): Likewise. * elf32-vax.c (elf_vax_size_dynamic_sections): Likewise. * elf32-xtensa.c (elf_xtensa_size_dynamic_sections): Likewise. * elf64-alpha.c (elf64_alpha_size_dynamic_sections): Likewise. * elf64-hppa.c (elf64_hppa_size_dynamic_sections): Likewise. * elf64-ppc.c (ppc64_elf_size_dynamic_sections): Likewise. * elf64-s390.c (elf_s390_size_dynamic_sections): Likewise. * elf64-sh64.c (sh64_elf64_size_dynamic_sections): Likewise. * elf64-x86-64.c (elf_x86_64_size_dynamic_sections): Likewise. * elfnn-aarch64.c (elfNN_aarch64_size_dynamic_sections): Likewise. * elfnn-ia64.c (elfNN_ia64_size_dynamic_sections): Likewise. * elfxx-mips.c (_bfd_mips_elf_size_dynamic_sections): Likewise. * elfxx-sparc.c (_bfd_sparc_elf_size_dynamic_sections): Likewise. * elfxx-tilegx.c (tilegx_elf_size_dynamic_sections): Likewise. ld/ * ld.texinfo (--no-dynamic-linker): Document. * ldlex.h (enum option_values): Add OPTION_NO_DYNAMIC_LINKER. * lexsup.c (ld_options, parse_args): Handle --no-dynamic-linker.
* ld: Extend options for altering orphan handling behaviour.Andrew Burgess2015-09-041-10/+17
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Replace the options --warn-orphan and --no-warn-orphan with a single option --orphan-handling=MODE, where mode can be place, warn, error, and discard. Mode 'place' is the default, and is the current behaviour, placing the orphan section into a suitable output section. Mode 'warn' is the same as '--warn-orphan'. The orphan is also placed using the same algorithm as for 'place'. Mode 'error' is the same as '--warn-orphan' and '--fatal-warnings'. Mode 'discard' assigns all output sections to the /DISCARD/ section. ld/ChangeLog: * ld.h (enum orphan_handling_enum): New. (ld_config_type): Remove warn_orphan, add orphan_handling. * ldemul.c (ldemul_place_orphan): Remove warning about orphan sections. * ldlang.c (ldlang_place_orphan): New function. (lang_place_orphans): Call ldlang_place_orphan. * ldlex.h (enum option_values): Remove OPTION_WARN_ORPHAN and OPTION_NO_WARN_ORPHAN, add OPTION_ORPHAN_HANDLING. * lexsup.c (ld_options): Remove 'warn-orphan' and 'no-warn-orphan', add 'orphan-handling'. (parse_args): Remove handling for OPTION_WARN_ORPHAN and OPTION_NO_WARN_ORPHAN, add handling for OPTION_ORPHAN_HANDLING. * NEWS: Replace text about --warn-orphan with --orphan-handling. * ld.texinfo (Options): Remove --warn-orphan entry and add entry on --orphan-handling. (Orphan Sections): Add reference to relevant command line options. ld/testsuite/ChangeLog: * ld-elf/elf.exp: Switch to rely on run_dump_test. * ld-elf/orphan-5.l: Update expected output. * ld-elf/orphan-5.d: New file. * ld-elf/orphan-6.d: New file. * ld-elf/orphan-6.l: New file. * ld-elf/orphan-7.d: New file. * ld-elf/orphan-7.map: New file. * ld-elf/orphan-8.d: New file. * ld-elf/orphan-8.map: New file.
* Remove link_info.picAlan Modra2015-08-191-3/+1
| | | | | | | | | | | | | | | | | | Adding type_pie to output_type allows us to remove link_info.pic and with some reordering of the enum, produces better code. include/ * bfdlink.h (enum output_type): Delete type_executable, add type_pde and type_pie. Reorder. (struct bfd_link_info): Delete pic field. (bfd_link_executable, bfd_link_pde, bfd_link_pie, bfd_link_pic): Adjust. ld/ * emultempl/aix.em: Don't set link_info.pic. * emultempl/pe.em: Likewise. * emultempl/pep.em: Likewise. * emultempl/sunos.em: Likewise. * lexsup.c (parse_args): Likewise. Set type_pie for -pie. * plugin.c (set_tv_header <LDPT_LINKER_OUTPUT>): Simplify.
* Add output_type to bfd_link_infoH.J. Lu2015-08-181-19/+27
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The "shared" field in bfd_link_info is set for both DSO and and PIE. There are separate fields for executable and relocatable outputs. This patch adds an "output_type" field: enum output_type { type_unknown = 0, type_executable, type_dll, type_relocatable }; and a "pic" field to bfd_link_info to replace shared, executable and relocatable fields so that we can use the "output_type" field to check for output type and the "pic" field check if output is PIC. Macros, bfd_link_executable, bfd_link_dll, bfd_link_relocatable, bfd_link_pic and bfd_link_pie, are provided to check for output features. bfd/ * bfd/aoutx.h: Replace shared, executable, relocatable and pie fields with bfd_link_executable, bfd_link_dll, bfd_link_relocatable, bfd_link_pic and bfd_link_pie. * bfd/bout.c: Likewise. * bfd/coff-alpha.c: Likewise. * bfd/coff-arm.c: Likewise. * bfd/coff-i386.c: Likewise. * bfd/coff-i960.c: Likewise. * bfd/coff-m68k.c: Likewise. * bfd/coff-mcore.c: Likewise. * bfd/coff-mips.c: Likewise. * bfd/coff-ppc.c: Likewise. * bfd/coff-rs6000.c: Likewise. * bfd/coff-sh.c: Likewise. * bfd/coff-tic80.c: Likewise. * bfd/coff-x86_64.c: Likewise. * bfd/coff64-rs6000.c: Likewise. * bfd/coffgen.c: Likewise. * bfd/cofflink.c: Likewise. * bfd/ecoff.c: Likewise. * bfd/ecofflink.c: Likewise. * bfd/elf-bfd.h: Likewise. * bfd/elf-eh-frame.c: Likewise. * bfd/elf-ifunc.c: Likewise. * bfd/elf-m10200.c: Likewise. * bfd/elf-m10300.c: Likewise. * bfd/elf-s390-common.c: Likewise. * bfd/elf-vxworks.c: Likewise. * bfd/elf.c: Likewise. * bfd/elf32-arm.c: Likewise. * bfd/elf32-avr.c: Likewise. * bfd/elf32-bfin.c: Likewise. * bfd/elf32-cr16.c: Likewise. * bfd/elf32-cr16c.c: Likewise. * bfd/elf32-cris.c: Likewise. * bfd/elf32-crx.c: Likewise. * bfd/elf32-d10v.c: Likewise. * bfd/elf32-dlx.c: Likewise. * bfd/elf32-epiphany.c: Likewise. * bfd/elf32-fr30.c: Likewise. * bfd/elf32-frv.c: Likewise. * bfd/elf32-ft32.c: Likewise. * bfd/elf32-h8300.c: Likewise. * bfd/elf32-hppa.c: Likewise. * bfd/elf32-i370.c: Likewise. * bfd/elf32-i386.c: Likewise. * bfd/elf32-i860.c: Likewise. * bfd/elf32-ip2k.c: Likewise. * bfd/elf32-iq2000.c: Likewise. * bfd/elf32-lm32.c: Likewise. * bfd/elf32-m32c.c: Likewise. * bfd/elf32-m32r.c: Likewise. * bfd/elf32-m68hc11.c: Likewise. * bfd/elf32-m68hc1x.c: Likewise. * bfd/elf32-m68k.c: Likewise. * bfd/elf32-mcore.c: Likewise. * bfd/elf32-mep.c: Likewise. * bfd/elf32-metag.c: Likewise. * bfd/elf32-microblaze.c: Likewise. * bfd/elf32-moxie.c: Likewise. * bfd/elf32-msp430.c: Likewise. * bfd/elf32-mt.c: Likewise. * bfd/elf32-nds32.c: Likewise. * bfd/elf32-nios2.c: Likewise. * bfd/elf32-or1k.c: Likewise. * bfd/elf32-ppc.c: Likewise. * bfd/elf32-rl78.c: Likewise. * bfd/elf32-rx.c: Likewise. * bfd/elf32-s390.c: Likewise. * bfd/elf32-score.c: Likewise. * bfd/elf32-score7.c: Likewise. * bfd/elf32-sh-symbian.c: Likewise. * bfd/elf32-sh.c: Likewise. * bfd/elf32-sh64.c: Likewise. * bfd/elf32-spu.c: Likewise. * bfd/elf32-tic6x.c: Likewise. * bfd/elf32-tilepro.c: Likewise. * bfd/elf32-v850.c: Likewise. * bfd/elf32-vax.c: Likewise. * bfd/elf32-visium.c: Likewise. * bfd/elf32-xc16x.c: Likewise. * bfd/elf32-xstormy16.c: Likewise. * bfd/elf32-xtensa.c: Likewise. * bfd/elf64-alpha.c: Likewise. * bfd/elf64-hppa.c: Likewise. * bfd/elf64-ia64-vms.c: Likewise. * bfd/elf64-mmix.c: Likewise. * bfd/elf64-ppc.c: Likewise. * bfd/elf64-s390.c: Likewise. * bfd/elf64-sh64.c: Likewise. * bfd/elf64-x86-64.c: Likewise. * bfd/elflink.c: Likewise. * bfd/elfnn-aarch64.c: Likewise. * bfd/elfnn-ia64.c: Likewise. * bfd/elfxx-mips.c: Likewise. * bfd/elfxx-sparc.c: Likewise. * bfd/elfxx-tilegx.c: Likewise. * bfd/i386linux.c: Likewise. * bfd/linker.c: Likewise. * bfd/m68klinux.c: Likewise. * bfd/pdp11.c: Likewise. * bfd/pe-mips.c: Likewise. * bfd/peXXigen.c: Likewise. * bfd/reloc.c: Likewise. * bfd/reloc16.c: Likewise. * bfd/sparclinux.c: Likewise. * bfd/sunos.c: Likewise. * bfd/vms-alpha.c: Likewise. * bfd/xcofflink.c: Likewise. include/ * include/bfdlink.h (output_type): New enum. (bfd_link_executable): New macro. (bfd_link_dll): Likewise. (bfd_link_relocatable): Likewise. (bfd_link_pic): Likewise. (bfd_link_pie): Likewise. (bfd_link_info): Remove shared, executable, pie and relocatable. Add output_type and pic. ld/ * ld/ldctor.c: Replace shared, executable, relocatable and pie fields with bfd_link_executable, bfd_link_dll, bfd_link_relocatable, bfd_link_pic and bfd_link_pie. * ld/ldemul.c: Likewise. * ld/ldfile.c: Likewise. * ld/ldlang.c: Likewise. * ld/ldmain.c: Likewise. * ld/ldwrite.c: Likewise. * ld/lexsup.c: Likewise. * ld/pe-dll.c: Likewise. * ld/plugin.c: Likewise. * ld/emultempl/aarch64elf.em: Likewise. * ld/emultempl/aix.em: Likewise. * ld/emultempl/alphaelf.em: Likewise. * ld/emultempl/armcoff.em: Likewise. * ld/emultempl/armelf.em: Likewise. * ld/emultempl/avrelf.em: Likewise. * ld/emultempl/beos.em: Likewise. * ld/emultempl/cr16elf.em: Likewise. * ld/emultempl/elf-generic.em: Likewise. * ld/emultempl/elf32.em: Likewise. * ld/emultempl/genelf.em: Likewise. * ld/emultempl/generic.em: Likewise. * ld/emultempl/gld960.em: Likewise. * ld/emultempl/gld960c.em: Likewise. * ld/emultempl/hppaelf.em: Likewise. * ld/emultempl/irix.em: Likewise. * ld/emultempl/linux.em: Likewise. * ld/emultempl/lnk960.em: Likewise. * ld/emultempl/m68hc1xelf.em: Likewise. * ld/emultempl/m68kcoff.em: Likewise. * ld/emultempl/m68kelf.em: Likewise. * ld/emultempl/metagelf.em: Likewise. * ld/emultempl/mipself.em: Likewise. * ld/emultempl/mmo.em: Likewise. * ld/emultempl/msp430.em: Likewise. * ld/emultempl/nds32elf.em: Likewise. * ld/emultempl/needrelax.em: Likewise. * ld/emultempl/nios2elf.em: Likewise. * ld/emultempl/pe.em: Likewise. * ld/emultempl/pep.em: Likewise. * ld/emultempl/ppc32elf.em: Likewise. * ld/emultempl/ppc64elf.em: Likewise. * ld/emultempl/sh64elf.em: Likewise. * ld/emultempl/solaris2.em: Likewise. * ld/emultempl/spuelf.em: Likewise. * ld/emultempl/sunos.em: Likewise. * ld/emultempl/tic6xdsbt.em: Likewise. * ld/emultempl/ticoff.em: Likewise. * ld/emultempl/v850elf.em: Likewise. * ld/emultempl/vms.em: Likewise. * ld/emultempl/vxworks.em: Likewise.
* ld: Add '--require-defined' command line option.Andrew Burgess2015-08-041-0/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add a new command line option '--require-defined' to the linker. This option operates identically to the '--undefined' option, except that if the symbol is not defined in the final output file then the linker will exit with an error. When making use of --gc-section, or just when trying to pull in parts of a library, it is not uncommon for a user to use the '--undefined' command line option to specify a symbol that the user then expects to be defined by one of the object files supplied to the link. However, if for any reason the symbol is not satisfied by an object provided to the link the user will be left with an undefined symbol in the output file, instead of a defined symbol. In some cases the above behaviour is what the user wants, in other cases though we can do better. The '--require-defined' option tries to fill this gap. The symbol passed to the '--require-defined' option is treated exactly as if the symbol was passed to '--undefined', however, before the linker exits a check is made that all symbols passed to '--require-defined' are actually defined, if any are not then the link will fail with an error. ld/ChangeLog: * ld.texinfo (Options): Document --require-defined option. * ldlang.c (struct require_defined_symbol): New structure. (require_defined_symbol_list): New variable. (ldlang_add_require_defined): New function. (ldlang_check_require_defined_symbols): New function. (lang_process): Check required symbols are defined. * ldlang.h (ldlang_add_require_defined): Declare. * ldlex.h (enum option_values): Add OPTION_REQUIRE_DEFINED_SYMBOL. * lexsup.c (ld_options): Add '--require-defined' entry. (parse_args): Handle '--require-defined' entry. * NEWS: Mention new '--require-defined' option. ld/testsuite/ChangeLog: * ld-undefined/require-defined-1.d: New file. * ld-undefined/require-defined-2.d: New file. * ld-undefined/require-defined-3.d: New file. * ld-undefined/require-defined-4.d: New file. * ld-undefined/require-defined-5.d: New file. * ld-undefined/require-defined.exp: New file. * ld-undefined/require-defined.s: New file.
* Don't set link_info.executable for "ld -r"H.J. Lu2015-07-291-1/+1
| | | | | | | | | | | | | | | | | | | This patch changes "ld -r" not to set link_info.executable. It removes !info->relocatable check for info->executable and adds it for !info->executable in elflink.c. bfd/ * elflink.c (elf_link_add_object_symbols): Remove !info->relocatable check for info->executable. Add !info->relocatable check for !info->executable. (elf_link_output_extsym): Remove !info->relocatable check for info->executable. ld/ * lexsup.c (parse_args): Don't set link_info.executable to TRUE for link_info.relocatable.
* Add new ld option: --print-memory-usageTristan Gingold2015-06-121-0/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | ld/ * NEWS: Mention new option. * lexsup.c (parse_args): Handle --print-memory-usage. (ld_options): Add --print-memory-usage. * ldmain.c (main): Call lang_print_memory_usage. * ldlex.h (enum option_values): Add OPTION_PRINT_MEMORY_USAGE. * ldlang.h: Add prototype of lang_print_memory_usage. * ldlang.c (lang_print_memory_size, lang_print_memory_usage): New functions. * ld.texinfo (Options): Document --print-memory-usage. * ld.h (args_type): Add print_memory_usage field. ld/testsuite/ * ld-scripts/print-memory-usage-1.t, * ld-scripts/print-memory-usage-1.s, * ld-scripts/print-memory-usage-1.l, * ld-scripts/print-memory-usage-2.t, * ld-scripts/print-memory-usage-2.l, * ld-scripts/print-memory-usage-3.s, * ld-scripts/print-memory-usage-3.t, * ld-scripts/print-memory-usage-3.l, * ld-scripts/print-memory-usage.t: New tests. * ld-scripts/print-memory-usage.exp: Run them.
* Add --compress-debug-sections=[none|zlib|zlib-gnu|zlib-gabi]H.J. Lu2015-04-141-0/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch adds --compress-debug-sections=[none|zlib|zlib-gnu|zlib-gabi] to ld for ELF targets to support generating compressed DWARF debug sections. We always generate .zdebug_* section since section names have been finalized and they can't be changed easily when compression is being performed. bfd/ * bfd-in.h (compressed_debug_section_type): New. * compress.c (bfd_compress_section_contents): Add an argument for linker write compression and always generate .zdebug_* section when linking. (bfd_init_section_compress_status): Pass FALSE to bfd_compress_section_contents. (bfd_compress_section): New function. * elf.c (elf_fake_sections): For linking, set SEC_ELF_COMPRESS on DWARF debug sections if COMPRESS_DEBUG is set and rename section if COMPRESS_DEBUG_GABI_ZLIB isn't set. (assign_file_positions_for_non_load_sections): Set sh_offset to -1 if SEC_ELF_COMPRESS is set. (assign_file_positions_except_relocs): Likwise. (_bfd_elf_assign_file_positions_for_relocs): Renamed to ... (_bfd_elf_assign_file_positions_for_non_load): This. Change return time to bfd_boolean. Compress the section if SEC_ELF_COMPRESS is set. (_bfd_elf_write_object_contents): Updated. (_bfd_elf_set_section_contents): Write section contents to the buffer if SEC_ELF_COMPRESS is set. * merge.c: Include "elf-bfd.h". (sec_merge_emit): Add arguments for contents and offset. Write to contents with offset if contents isn't NULL. (_bfd_write_merged_section): Write section contents to the buffer if SEC_ELF_COMPRESS is set. Pass contents and output_offset to sec_merge_emit. * elflink.c (bfd_elf_final_link): Allocate the buffer for output section contents if SEC_ELF_COMPRESS is set. * section.c (SEC_ELF_COMPRESS): New. * bfd-in2.h: Regenerated. gas/ * as.h (compressed_debug_section_type): Removed. include/ * bfdlink.h (bfd_link_info): Add compress_debug. ld/ * ld.texinfo: Document --compress-debug-sections=. * ldmain.c (main): Set BFD_COMPRESS on output_bfd if COMPRESS_DEBUG is set. Set BFD_COMPRESS_GABI on output_bfd for COMPRESS_DEBUG_GABI_ZLIB. * lexsup.c (elf_static_list_options): Add --compress-debug-sections=. * emultempl/elf32.em (OPTION_COMPRESS_DEBUG): New. (xtra_long): Add "compress-debug-sections". (gld${EMULATION_NAME}_handle_option): Handle OPTION_COMPRESS_DEBUG. ld/testsuite/ * ld-elf/compress.exp (build_tests): Add tests for --compress-debug-sections=. (run_tests): Likewise. Add additonal tests for --compress-debug-sections=. * ld-elf/gabiend.rt: New file. * ld-elf/gabinormal.rt: Likewise. * ld-elf/gnubegin.rS: Likewise. * ld-elf/gnunormal.rS: Likewise. * ld-elf/zlibbegin.rS: Likewise. * ld-elf/zlibnormal.rS: Likewise.
* Add ld_list_optionsH.J. Lu2015-04-081-0/+108
| | | | | | | | | | | | | | | | | | | | | | | | | This patch adds ld_list_options for ELF targets to avoid duplicated outputs from ld --help. * Makefile.am (ELF_CLFAGS): New. (AM_CFLAGS): Add $(ELF_CLFAGS). * configure.ac (elf_list_options): New. AC_SUBST. (elf_shlib_list_options): Likewise. (elf_plt_unwind_list_options): Likewise. * lexsup.c (elf_shlib_list_options): New. (elf_static_list_options): Likewise. (elf_plt_unwind_list_options): Likewise. (ld_list_options): Likewise. (help): Call ld_list_options. * Makefile.in: Regenerated. * configure: Likewise. * emulparams/plt_unwind.sh (PLT_UNWIND): New. (PARSE_AND_LIST_OPTIONS): Removed. * emultempl/elf32.em (gld_list_options): New. (gld${EMULATION_NAME}_list_options): Define only if BNDPLT or PARSE_AND_LIST_OPTIONS is defined. (ld_${EMULATION_NAME}_emulation): Replace gld${EMULATION_NAME}_list_options with ${gld_list_options.
* Add new linker option: --warn-orphan which generates warning messages when ↵Nick Clifton2015-04-071-0/+10
| | | | | | | | | | | | | | | | | | orphan sections are detected. ld * ld.h (struct ld_config_type): Add new field: warn_orphan. * ldlex.h (enum option_values): Add OPTION_WARN_ORPHAN and OPTION_NO_WARN_ORPHAN. * lexsup.c (ld_options): Add --warn-orphan and --no-warn-orphan. (parse_args): Handle the new options. * ldemul.c (ldemul_place_orphan): If requested, generate a warning message when an orphan section is placed in the output file. * ld.texinfo: Document the new option. * NEWS: Mention the new feature. tests * ld-elf/orphan-5.l: New test - checks the linker's output with --warn-orphan enabled. * ld-elf/elf.exp: Run the new test.
* Fixes a problem where "ld -ixxx" would report an error of "ld: bad -rpath ↵Nick Clifton2015-02-231-1/+1
| | | | | | | option". * lexsup.c (parse_args): Produce a more reasonable error message when -ixxx or -rxxx is the last option on the linker command line.
* Add --[no-]map-whole-files for gold compatibilityH.J. Lu2015-02-111-0/+6
| | | | | | | | | | | | | Gold supports: --map-whole-files Map whole files to memory (default on 64-bit hosts) --no-map-whole-files Map relevant file parts to memory (default on 32-bit hosts) This patch adds --[no-]map-whole-files command line options for gold compatibility. They are ignored for ld. * lexsup.c (ld_options): Add --[no-]map-whole-files for gold option compatibility.
* ChangeLog rotatation and copyright year updateAlan Modra2015-01-021-1/+1
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* Implement --print-sysroot in ld.Hans-Peter Nilsson2014-10-171-0/+7
| | | | | | * ldlex.h (enum option_values): Add entry OPTION_PRINT_SYSROOT. * lexsup.c (ld_options): Add entry for --print-sysroot. (parse_args) <OPTION_PRINT_SYSROOT>: Print sysroot and exit early.
* * ldlang.h (struct lang_input_statement_flags): Add pushedUlrich Drepper2014-08-081-0/+23
| | | | | | | | | | member. * ldlex.h (enum option_values): Add OPTION_PUSH_STATE and OPTION_POP_STATE. * lexsup.c (ld_options): Add entries for --push-state and --pop-state. (parse_args): Handle OPTION_PUSH_STATE and OPTION_POP_STATE. * ld.texinfo: Document --push-state and --pop-state.
* lexsup.c (parse_args): Check whether provided SONAME is emptyUlrich Drepper2014-06-301-1/+11
| | | | | string. If yes, warn and ignore it. Don't overwrite valid SONAME with empty string.
* Update copyright yearsAlan Modra2014-03-051-3/+1
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* * ld.texinfo (-Tldata-segment): Describe.Alan Modra2013-01-141-0/+5
| | | | | | | * ldlex.h (OPTION_TLDATA_SEGMENT): New enum value. * lexsup.c (ld_options): Add -Tldata-segment. (parse_args): Handle OPTION_TLDATA_SEGMENT. * scripttempl/elf.sc: Support LARGE_DATA_ADDR.
* Add fuse-ld= for GCC linker option compatibilityH.J. Lu2013-01-071-0/+3
| | | | | * lexsup.c (ld_options): Add fuse-ld= for GCC linker option compatibility.