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2024-06-18libctf: dedup: enums with overlapping enumerators are conflictingNick Alcock4-0/+77
The CTF deduplicator was not considering enumerators inside enum types to be things that caused type conflicts, so if the following two TUs were linked together, you would end up with the following in the resulting dict: 1.c: enum foo { A, B }; 2.c: enum bar { A, B }; linked: enum foo { A, B }; enum bar { A, B }; This does work -- but it's not something that's valid C, and the general point of the shared dict is that it is something that you could potentially get from any valid C TU. So consider such types to be conflicting, but obviously don't consider actually identical enums to be conflicting, even though they too have (all) their identifiers in common. This involves surprisingly little code. The deduplicator detects conflicting types by counting types in a hash table of hash tables: decorated identifier -> (type hash -> count) where the COUNT is the number of times a given hash has been observed: any name with more than one hash associated with it is considered conflicting (the count is used to identify the most common such name for promotion to the shared dict). Before now, those identifiers were all the identifiers of types (possibly decorated with their namespace on the front for enumerator identifiers), but we can equally well put *enumeration constant names* in there, undecorated like the identifiers of types in the global namespace, with the type hash being the hash of each enum containing that enumerator. The existing conflicting-type-detection code will then accurately identify distinct enums with enumeration constants in common. The enum that contains the most commonly-appearing enumerators will be promoted to the shared dict. libctf/ * ctf-impl.h (ctf_dedup_t) <cd_name_counts>: Extend comment. * ctf-dedup.c (ctf_dedup_count_name): New, split out of... (ctf_dedup_populate_mappings): ... here. Call it for all * enumeration constants in an enum as well as types. ld/ * testsuite/ld-ctf/enum-3.c: New test CTF. * testsuite/ld-ctf/enum-4.c: Likewise. * testsuite/ld-ctf/overlapping-enums.d: New test. * testsuite/ld-ctf/overlapping-enums-2.d: Likewise.
2024-06-18Ensure that the text segment is aligned on disk when using --rosegment.Nick Clifton1-1/+1
2024-06-14x86: Add -z isa-level-report=[none|all|needed|used]H.J. Lu22-0/+291
Add -z isa-level-report=[none|all|needed|used] to the x86 ELF linker to report needed and used x86-64 ISA levels. bfd/ PR ld/31868 * elf-linker-x86.h (elf_x86_isa_level_report): New. (elf_linker_x86_params): Add isa_level_report. * elfxx-x86.c (report_isa_level): New. (_bfd_x86_elf_link_setup_gnu_properties): Check -z isa-level-report=[none|all|needed|used] to report needed and used x86-64 ISA level. ld/ PR ld/31868 * NEWS: Mention -z isa-level-report=[none|all|needed|used]. * ld.texi: Document -z isa-level-report=[none|all|needed|used]. * emulparams/elf32_x86_64.sh: Source x86-64-level-report.sh. * emulparams/elf_i386.sh: Likewise. * emulparams/elf_x86_64.sh: Likewise. * emulparams/x86-64-level-report.sh: New file. * testsuite/ld-i386/pr31868a.d: Likewise. * testsuite/ld-i386/pr31868b.d: Likewise. * testsuite/ld-i386/pr31868c.d: Likewise. * testsuite/ld-x86-64/pr31868a-x32.d: Likewise. * testsuite/ld-x86-64/pr31868a.d: Likewise. * testsuite/ld-x86-64/pr31868a.l: Likewise. * testsuite/ld-x86-64/pr31868a.s: Likewise. * testsuite/ld-x86-64/pr31868b-x32.d: Likewise. * testsuite/ld-x86-64/pr31868b.d: Likewise. * testsuite/ld-x86-64/pr31868b.l: Likewise. * testsuite/ld-x86-64/pr31868b.s: Likewise. * testsuite/ld-x86-64/pr31868c-x32.d: Likewise. * testsuite/ld-x86-64/pr31868c.d: Likewise. * testsuite/ld-x86-64/pr31868c.l: Likewise. * testsuite/ld-i386/i386.exp: Run PR ld/31868 tests. * testsuite/ld-x86-64/x86-64.exp: Likewise. Signed-off-by: H.J. Lu <hjl.tools@gmail.com>
2024-06-14ld: Align --no-error-execstack help outputH.J. Lu1-1/+1
* lexsup.c (elf_static_list_options): Align --no-error-execstack help output. Signed-off-by: H.J. Lu <hjl.tools@gmail.com>
2024-06-14Regenerate configure files in ld sub-directoryNick Clifton2-6/+6
2024-06-13Adjust linker tests that are sensitive to --rosegmentNick Clifton21-26/+26
2024-06-13Add --rosegment option to BFD linker to stop the '-z separate-code' from ↵Nick Clifton13-44/+703
generating two read-only segments. PR 30907
2024-06-10IBM zSystems: Rewrite l(g)rl @GOTENT to larl for --no-pieIlya Leoshkevich3-0/+35
Regtested on s390x-redhat-linux. Rewriting l(g)rl @GOTENT to larl is unnecessarily guarded by bfd_link_pic(). There were no use cases for this in the past, but since recently the Linux Kernel on s390x is compiled with -fPIE and linked with --no-pie. Remove the unnecessary bfd_link_pic() check. bfd/ChangeLog: * elf32-s390.c (elf_s390_relocate_section): Don't check for bfd_link_pic() when rewriting lrl@GOTENT to larl. (elf_s390_finish_dynamic_symbol): Emit a relative reloc for the above case. * elf64-s390.c (elf_s390_relocate_section): Don't check for bfd_link_pic() when rewriting lgrl@GOTENT to larl. (elf_s390_finish_dynamic_symbol): Emit a relative reloc for the above case. ld/ChangeLog: * testsuite/ld-s390/s390.exp: Hook up the new tests. * testsuite/ld-s390/gotreloc_31-no-pie-1.dd: New test. * testsuite/ld-s390/gotreloc_64-no-pie-1.dd: New test.
2024-06-10ld-aarch64: check support before launching dt_relr testsClément Chigot1-9/+11
Not all aarch64 targets supports dt_relr as this requires some mechanisms on the OS side. Adjust support_dt_relr helper and use it in aarch64-elf.exp.
2024-06-10autoupdate: regen after replacing obsolete macrosMatthieu Longo1-4/+2
2024-06-10autoupdate: add square brackets around arguments of AC_INITMatthieu Longo1-1/+1
https://www.gnu.org/savannah-checkouts/gnu/autoconf/manual/autoconf-2.72/autoconf.html#index-AC_005fINIT-2
2024-06-10autoupdate: replace obsolete macros AC_AIX, AC_MINIX, and AC_GNU_SOURCEMatthieu Longo1-1/+0
- AC_AIX, AC_MINIX, and AC_GNU_SOURCE by AC_USE_SYSTEM_EXTENSIONS https://www.gnu.org/savannah-checkouts/gnu/autoconf/manual/autoconf-2.72/autoconf.html#index-AC_005fAIX https://www.gnu.org/savannah-checkouts/gnu/autoconf/manual/autoconf-2.72/autoconf.html#index-AC_005fMINIX-1 https://www.gnu.org/savannah-checkouts/gnu/autoconf/manual/autoconf-2.72/autoconf.html#index-AC_005fGNU_005fSOURCE-1
2024-06-10autoupdate: replace obsolete macros AC_HELP_STRINGMatthieu Longo1-1/+1
- AC_HELP_STRING by AS_HELP_STRING https://www.gnu.org/savannah-checkouts/gnu/autoconf/manual/autoconf-2.72/autoconf.html#index-AC_005fHELP_005fSTRING-1 Except for the ifdef in lib-prefix.m4, make the defun of AC_LIB_ARG_WITH unconditional.
2024-06-07aarch64: Test DT_RELR with discarded sectionsSzabolcs Nagy5-0/+114
2024-06-06Re: aarch64: Add some DT_RELR ld testsAlan Modra4-20/+20
aarch64-elf fails these tests due to .rela.dyn being at a different address to that expected, and due to the symbol table being different. Unexpected symbol numbering results in a mismatch of reloc r_info field, but these are shown decoded so the raw field doesn't really add anything to the test. * testsuite/ld-aarch64/relr-align.d: Accept any address for .relr.dyn section. Don't match raw r_info field. * testsuite/ld-aarch64/relr-data-shared.d: Likewise. * testsuite/ld-aarch64/relr-got-shared.d: Likewise. * testsuite/ld-aarch64/relr-text-shared.d: Likewise.
2024-06-04LoongArch: Disable linker relaxation if set the address of section or segmentmengqinggang3-0/+41
If set the address of section or segment, the offset from pc to symbol may become bigger and cause overflow.
2024-05-31aarch64: Add some DT_RELR ld testsSzabolcs Nagy12-0/+351
2024-05-31aarch64: Add DT_RELR supportSzabolcs Nagy3-0/+6
The logic to decide if an input relocation for a symbol becomes a particular kind of output relocation is one of the hard to maintain parts of the bfd ld backend, since it is partially repeated across elfNN_aarch64_check_relocs (where dynamic relocations are counted per symbol and input section), elfNN_aarch64_late_size_sections (where relocation sections are sized and GOT offsets assigned), elfNN_aarch64_relocate_section (where most relocations are applied and output to a relocation section), elfNN_aarch64_finish_dynamic_symbol (where some of the GOT relocations are applied and output). The DT_RELR support adds another layer to this complexity: after the output relocation sections are sized, so all dynamic relocations are accounted (in elfNN_aarch64_late_size_sections), we scan the symbols and input relocations again to decide which ones become relative relocations that can be packed. The sizes of the relocation sections are updated accordingly. This logic must be consistent with the code that applies the relocs later so each relative relocation is emitted exactly once: either in .rela.* or packed in .relr.dyn. Sizing of .relr.dyn is done via elfNN_aarch64_size_relative_relocs that may be called repeatedly whenever the layout changes since an address change can affect the size of the packed format. Then the final content is emitted in elfNN_aarch64_finish_relative_relocs, that is called after the layout is final and before relocations are applied and emitted. These hooks are only called if DT_RELR is enabled. We only pack relative relocs that are known to be aligned in the output during .relr.dyn sizing, the potentially unaligned relative relocs are emitted normally (in .rela.*, not packed), because the format requires aligned addresses.
2024-05-28ld: pru: Increase the default memory region sizesDimitar Dimitrov1-2/+2
The default memory region sizes for PRU were set somewhat arbitrarily to the sizes of the most popular BeagleBone board with AM33x SoC. But the PRU toolchain documentation has always instructed to use SoC-specific spec files to override the defaults and set the correct memory sizes [1]. The small default memory sizes can cause IMEM memory region overflow even for simple printf("Hello world") programs, as usually done by Autotools checks. The stdio is simply too big to fit in 8K instruction memory. This can confuse the check and lead to wrong feature selection during configure [2]. Fix by bumping the default DMEM and IMEM memory sizes. There is no need to backport this patch. Issue was caught with a feature-rich newlib build used for daily CI. The release builds of the PRU toolchain use stripped newlib configuration, which does not overflow the IMEM region, even for 8K. [1] https://github.com/dinuxbg/gnuprumcu [2] https://gcc.gnu.org/bugzilla/show_bug.cgi?id=115158 Signed-off-by: Dimitar Dimitrov <dimitar@dinux.eu>
2024-05-28RISC-V: Fixed overwritten IRELATIVE relocs in the .rel.iplt for data reloc.Nelson Chu6-7/+28
This was originally reported by Hau Hsu <hau.hsu@sifive.com>. Similar to commit 51a8a7c2e3cc0730831963651a55d23d1fae624d We shouldn't use riscv_elf_append_rela to add dynamic relocs into .rela.iplt in the riscv_elf_relocate_section when handling ifunc data reloc R_RISCV_32/64. This just like what did in the riscv_elf_finish_dynamic_symbol. bfd/ * elfnn-riscv.c (riscv_elf_relocate_section): We shouldn't use riscv_elf_append_rela to add dynamic relocs into .rela.iplt in the riscv_elf_relocate_section when handling ifunc data reloc. ld/ * testsuite/ld-riscv-elf/ifunc-overwrite.s: Updated and renamed. * testsuite/ld-riscv-elf/ifunc-overwrite-exe.rd: Likewise. * testsuite/ld-riscv-elf/ifunc-overwrite-pic.rd: Likewise. * testsuite/ld-riscv-elf/ifunc-overwrite-pie.rd: Likewise. * testsuite/ld-riscv-elf/ifunc-overwrite.d: Renamed.
2024-05-27LoongArch: Fix relaxation overflow caused by ld -z separate-codemengqinggang6-36/+114
ld -z separate-code let .text and .rodata in two different but read only segment. If the symbol and pc in two segment, the offset from pc to symbol need to consider segment alignment. Add a function 'loongarch_two_sections_in_same_segment' to determine whether two sections are in the same segment.
2024-05-25ld: Document -pie -Ttext-segment=ORG generates ET_EXECH.J. Lu1-1/+4
This is the v2 patch I am checking in. H.J.
2024-05-21ld: silence makeinfo warningsJan Beulich1-2/+2
Older tool versions (4.12 in my case) demand . or , after @xref{}; arrange for this to be the case.
2024-05-14Improve objdump -p output of PE Import and Export TablesPali Roh?r4-12/+12
PR 31738
2024-05-10Add --section-ordering command line option to the bfd linker.Nick Clifton22-65/+462
2024-05-08ld: Add PR ld/31710 testsH.J. Lu4-0/+63
PR ld/31710 * testsuite/ld-elf/wrap.exp: Run ld/31710 tests. * testsuite/ld-elf/wrap2.h: New file. * testsuite/ld-elf/wrap2a.c: Likewise. * testsuite/ld-elf/wrap2b.c: Likewise.
2024-05-08ld: Run --wrap tests only if supportedH.J. Lu1-19/+15
Run --wrap tests with shared library only if -shared is supported. * testsuite/ld-elf/wrap.exp: Run --wrap tests with shared library only if -shared is supported.
2024-05-08RISC-V: Support B, Zaamo and Zalrsc extensions.Nelson Chu4-4/+4
* https://github.com/riscv/riscv-b/tags Added standard B extension back, which implies Zba, Zbb and Zbs extensions. * https://github.com/riscv/riscv-zaamo-zalrsc/tags Splited standard A extension into two new extensions, Zaamo and Zalrsc. The A extension implies Zaamo and Zalrsc extensions. Not sure if we need to do the similar check as i and zicsr/zifencei. Passed riscv[32|64]-[elf/linux] binutils testcases. bfd/ * elfxx-riscv.c (riscv_implicit_subsets): Added imply rules for A and B extensions. The A implies Zaamo and Zalrsc, the B implies Zba, Zbb and Zbs. (riscv_supported_std_ext): Supported B extension with v1.0. (riscv_supported_std_z_ext): Supported Zaamo and Zalrsc with v1.0. (riscv_multi_subset_supports, riscv_multi_subset_supports_ext): Updated. include/ * opcode/riscv.h (riscv_insn_class): Removed INSN_CLASS_A, Added INSN_CLASS_ZAAMO and INSN_CLASS_ZALRSC. opcodes/ * riscv-opc.c (riscv_opcodes): Splited standard A extension into two new extensions, Zaamo and Zalrsc. gas/ * testsuite/gas/riscv/march-imply-a.d: New testcase. * testsuite/gas/riscv/march-imply-b.d: New testcase. * testsuite/gas/riscv/attribute-01.d: Updated. * testsuite/gas/riscv/attribute-02.d: Updated. * testsuite/gas/riscv/attribute-03.d: Updated. * testsuite/gas/riscv/attribute-04.d: Updated. * testsuite/gas/riscv/attribute-05.d: Updated. * testsuite/gas/riscv/attribute-10.d: Updated. * testsuite/gas/riscv/mapping-symbols.d: Updated. * testsuite/gas/riscv/march-imply-g.d: Updated. * testsuite/gas/riscv/march-imply-unsupported.d: Updated. * testsuite/gas/riscv/march-ok-reorder.d: Updated. ld/ * testsuite/ld-riscv-elf/attr-merge-arch-01.d: Updated. * testsuite/ld-riscv-elf/attr-merge-arch-02.d: Updated. * testsuite/ld-riscv-elf/attr-merge-arch-03.d: Updated. * testsuite/ld-riscv-elf/attr-merge-user-ext-01.d: Updated.
2024-05-07LoongArch: Fix ld test failures caused by using instruction aliasesLulu Cai1-1/+1
Different versions of objdump may take different forms of output for instructions. Use -M no-aliases to avoid the failure of ld test cases caused by objdump using aliases.
2024-04-29Fix initiali state of DWARF v5 line number table in BFD libraryNick Clifton1-1/+1
PR 30783
2024-04-25LoongArch: Add bad static relocation check and output more information to userLulu Cai7-0/+45
Absolute address symbols cannot be used with -shared. We output more information to the user than just BFD_ASSETR.
2024-04-24Update readelf's display of RELR sections to include the number of locations ↵Nick Clifton13-13/+13
relocated
2024-04-23ignore some symbols in elf.c:swap_out_symsAlan Modra1-1/+1
The reason behind this patch was noticing that generic ELF targets fail to remove "bar" in the recently committed ld-elf/undefweak-1 test. (Despite that, those targets pass the test due to it being too strict when matching symbols. "bar" gets turned into a local weak defined absolute symbol.) swap_out_syms currently drops local section syms that are defined in discarded sections. Extend that to also drop other symbols in discarded sections too, even global symbols. The linker goes to quite a lot of effort to ensure globals in discarded section take a definition from the kept linkonce or comdat group section. So the global sym change should only affect cases where something is quite wrong about the set of linkonce or comdat group sections. However that change to elf_map_symbols meant we dropped _DYNAMIC_LINK / _DYNAMIC_LINKING for mips, a global absolute symbol given STT_SECTION type for some reason. That problem is fixed by reverting the pr14493 change which is no longer needed due to a) BSF_SECTION_SYM_USED on x86, and b) fixing objcopy to use copy_private_symbol_data. bfd/ PR 14493 * elf.c (ignore_sym): Rename from ignore_section_sym. Return true for any symbol without a section or in a discarded section. Revert pr14493 change. (elf_map_symbols): Tidy. Use ignore_sym on all symbols. (swap_out_syms): Tidy. ld/ * testsuite/ld-elf/undefweak-1.rd: Match any "bar".
2024-04-23xfail undefweak-1 test for alphaAlan Modra1-1/+1
".set" has a different meaning on alpha. Changing it to ".equ" runs into ".equ" having a different meaning on hppa, and changing it to "=" runs into trouble on bfin. * testsuite/ld-elf/elf.exp (undefweak-1): xfail on alpha, don't xfail for genelf.
2024-04-20LoongArch: Add -mignore-start-align optionmengqinggang7-2/+43
Ignore .align at the start of a section may result in misalignment when partial linking. Manually add -mignore-start-align option without partial linking. Gcc -falign-functions add .align 5 to the start of a section, it causes some error message mismatch. Set these testcases to xfail on LoongArch target.
2024-04-18elf: Strip unreferenced weak undefined symbolsH.J. Lu8-0/+87
Linker will resolve an undefined symbol only if it is referenced by relocation. Unreferenced weak undefined symbols serve no purpose. Weak undefined symbols appear in the dynamic symbol table only when they are referenced by dynamic relocation. Mark symbols with relocation and strip undefined weak symbols if they don't have relocation and aren't in the dynamic symbol table. bfd/ PR ld/31652 * elf-bfd.h (elf_link_hash_entry): Add has_reloc. * elf-vxworks.c (elf_vxworks_emit_relocs): Set has_reloc. * elflink.c (_bfd_elf_link_output_relocs): Likewise. (elf_link_output_extsym): Strip undefined weak symbols if they don't have relocation and aren't in the dynamic symbol table. ld/ PR ld/31652 * testsuite/ld-elf/elf.exp: Run undefweak tests. * testsuite/ld-elf/undefweak-1.rd: New file. * testsuite/ld-elf/undefweak-1a.s: Likewise. * testsuite/ld-elf/undefweak-1b.s: Likewise. * testsuite/ld-x86-64/weakundef-1.nd: Likewise. * testsuite/ld-x86-64/weakundef-1a.s: Likewise. * testsuite/ld-x86-64/weakundef-1b.s: Likewise. * testsuite/ld-x86-64/x86-64.exp: Run undefweak tests.
2024-04-16elf: Skip the archive if the symbol isn't referencedH.J. Lu4-0/+49
Also skip the archive if the symbol isn't referenced by a regular object. bfd/ PR ld/31644 * elflink.c (elf_link_add_archive_symbols): Also skip the archive if the symbol isn't referenced by a regular object. ld/ PR ld/31644 * testsuite/ld-plugin/lto.exp: Run PR ld/31644 tests. * testsuite/ld-plugin/pr31644a.c: New test. * testsuite/ld-plugin/pr31644b.c: Likewise. * testsuite/ld-plugin/pr31644c.c: Likewise.
2024-04-16Simplify readelf's RELR relocation display.Fangrui Song13-26/+26
2024-04-11Improve readelf's display of RELR relocs.Nick Clifton13-39/+53
2024-04-10mmap: Avoid the sanitizer configure check failureH.J. Lu4-2/+8
When -fsanitize=address,undefined is used to build, the mmap configure check failed with ================================================================= ==231796==ERROR: LeakSanitizer: detected memory leaks Direct leak of 4096 byte(s) in 1 object(s) allocated from: #0 0x7cdd3d0defdf in __interceptor_malloc ../../../../src/libsanitizer/asan/asan_malloc_linux.cpp:69 #1 0x5750c7f6d72b in main /home/alan/build/gas-san/all/bfd/conftest.c:239 Direct leak of 4096 byte(s) in 1 object(s) allocated from: #0 0x7cdd3d0defdf in __interceptor_malloc ../../../../src/libsanitizer/asan/asan_malloc_linux.cpp:69 #1 0x5750c7f6d2e1 in main /home/alan/build/gas-san/all/bfd/conftest.c:190 SUMMARY: AddressSanitizer: 8192 byte(s) leaked in 2 allocation(s). Replace AC_FUNC_MMAP with GCC_AC_FUNC_MMAP to avoid the sanitizer configure check failure. bfd/ * configure.ac: Replace AC_FUNC_MMAP with GCC_AC_FUNC_MMAP. * Makefile.in: Regenerated. * aclocal.m4: Likewise. * configure: Likewise. binutils/ * configure.ac: Replace AC_FUNC_MMAP with GCC_AC_FUNC_MMAP. * Makefile.in: Regenerated. * aclocal.m4: Likewise. * configure: Likewise. ld/ * configure.ac: Replace AC_FUNC_MMAP with GCC_AC_FUNC_MMAP. * Makefile.in: Regenerated. * aclocal.m4: Likewise. * configure: Likewise. libctf/ * configure.ac: Replace AC_FUNC_MMAP with GCC_AC_FUNC_MMAP. * Makefile.in: Regenerated. * aclocal.m4: Likewise. * configure: Likewise. libsframe/ * configure.ac: Replace AC_FUNC_MMAP with GCC_AC_FUNC_MMAP. * Makefile.in: Regenerated. * aclocal.m4: Likewise. * configure: Likewise.
2024-04-10Re: ld testsuite: Append NOSANITIZE_CFLAGS to CFLAGS_FOR_TARGETAlan Modra1-4/+4
Don't use CC_FOR_TARGET in the bootstrap test, a silly idea aiming at consistency that made things worse. The objects being linked were built using $CC, so $CC should be used to link. * testsuite/ld-bootstrap/bootstrap.exp: Revert last change.
2024-04-09LoongArch: ld: Move .got .got.plt before .data and protect .got with relromengqinggang4-1/+27
Move .got .got.plt before .data so .got can be protected with -zrelro. And the first two entries of .got.plt (_dl_runtime_resolve and link map) are placed within the relro region.
2024-04-09ld testsuite: Append NOSANITIZE_CFLAGS to CFLAGS_FOR_TARGETAlan Modra2-4/+7
The idea here is build tests without sanitizer flags, so they don't fail due to many not using the compiler to link and thus result in undefined symbols, since libasan is not supplied. We definitely do not want a compiler to perform linking in most cases, and it's complicated to supply libasan (and would possibly disturb testcase output). * testsuite/config/default.exp (CFLAGS_FOR_TARGET), (CXXFLAGS_FOR_TARGET): Append NOSANITIZE_CFLAGS. * testsuite/ld-bootstrap/bootstrap.exp: Use CC_FOR_TARGET and CFLAGS_FOR_TARGET throughout.
2024-04-08ld: Add PR ld/31615 testsH.J. Lu6-0/+66
PR ld/31615 * testsuite/ld-plugin/lto.exp: Run ld/31615 tests. * testsuite/ld-plugin/pr31615.ver: New file. * testsuite/ld-plugin/pr31615a.c: Likewise. * testsuite/ld-plugin/pr31615b.c: Likewise. * testsuite/ld-plugin/pr31615c.c: Likewise. * testsuite/ld-plugin/pr31615d.c: Likewise.
2024-04-05elf: Always honor the first definition in shared object and archiveH.J. Lu10-0/+137
GCC doesn't put builtin function symbol references, which are defined in the shared C library, in the IR symbol table. When linker rescans shared objects and archives for newly added symbol references generated from the IR inputs, it skips definitions of the builtin functions in shared objects and archives. Add first_hash to elf_link_hash_table to track unreferenced definitions defined first in shared objects and archives. Always use them to resolve any references. bfd/ PR ld/31482 PR ld/31489 * elf-bfd.h (elf_link_hash_table): Add first_hash. * elflink.c (elf_link_add_to_first_hash): New function. (elf_link_add_object_symbols): Initialize first_hash for an IR input. Always use the first definition in shared object. Add the first unreferenced dynamic definition to first_hash. (_bfd_elf_archive_symbol_lookup): Add the first unreferenced definition to first_hash.. (elf_link_add_archive_symbols): Use the symbol definition in archive if symbol is defined first in this archive. (_bfd_elf_link_hash_table_free): Also free first_hash. ld/ PR ld/31482 PR ld/31489 * testsuite/ld-plugin/lto.exp: Add PR ld/31482 and PR ld/31489 tests. * testsuite/ld-elf/pr31482a-no-lto.c: New file. * testsuite/ld-elf/pr31482b-no-lto.c: Likewise. * testsuite/ld-elf/pr31482c-no-lto.c: Likewise. * testsuite/ld-elf/pr31482d-no-lto.c: Likewise. * testsuite/ld-plugin/pass1.out: Likewise. * testsuite/ld-plugin/pr31482a.c: Likewise. * testsuite/ld-plugin/pr31482b.c: Likewise. * testsuite/ld-plugin/pr31482c.c: Likewise.
2024-04-05Add missing install-dvi and install-ps Makefie targets.Christophe Lyon1-0/+2
For some reason, these targets are missing although others from the same family are present. This looks like an oversight. This enables calling 'make install-dvi' from the top-level build directory.
2024-04-02PR31458, FAIL: MIPS eh-frame 3 with --no-keep-memoryH.J. Lu1-0/+1
PR 31458 bfd/ * elf-bfd.h (_bfd_elf_link_read_relocs), (_bfd_elf_link_info_read_relocs): Constify section. * elflink.c: Likewise. * elfxx-mips.c (_bfd_mips_elf_eh_frame_address_size): Read relocs again in case --no-keep-memory. ld/ * testsuite/ld-mips-elf/mips-elf.exp: Run --no-keep-memory version of eh-frame3 test.
2024-04-02PR 30569, always call elf_backend_size_dynamic_sectionsAlan Modra1-4/+3
This largely mechanical patch is preparation for a followup patch. For quite some time I've thought that it would be useful to call elf_backend_size_dynamic_sections even when no dynamic objects are seen by the linker. That's what this patch does, with some renaming. There are no functional changes to the linker, just a move of the dynobj test in bfd_elf_size_dynamic_sections to target backend functions, replacing the asserts/aborts already there. No doubt some of the current always_size_sections functions could be moved to size_dynamic_sections but I haven't made that change. Because both hooks are now always called, I have renamed always_size_sections to early_size_sections and size_dynamic_sections to late_size_sections. I condisdered calling late_size_sections plain size_sections, since this is the usual target dynamic section sizing hook, but decided that searching the sources for "size_sections" would then hit early_size_sections and other functions.
2024-04-01hppa: Implement PA 2.0 symbolic relocations for long displacementsJohn David Anglin2-1/+2
The PA 2.0 architecture introduced several new load and store instructions with long displacements. These include floating point loads and stores for word mode, and integer and floating point loads and stores for double words. Currently, ld does not correctly support symbolic relocations for these instructions. If these are used, ld applies the standard R_PARISC_DPREL14R relocation and corrupts the instruction. This change uses bfd_hppa_insn2fmt to determine the correct relocation format. We need to check the computed displacement as the immediate value used in these instruction must be a multiple of 4 or 8 depending on whether the access is for a word or double word. A misaligned offset can potentially occur if the symbol is not properly aligned or if $global$ (the global pointer) is not double word aligned. $global$ is provided as a .data section start symbol. The patch adjusts elf.sc and hppalinux.sh to align .data to a 8-byte boundary in non-shared and non-pie links. 2024-04-01 John David Anglin <danglin@gcc.gnu.org> PR ld/31503 bfd/ChangeLog: * elf32-hppa.c (final_link_relocate): Output ld/ChangeLog: * emulparams/hppalinux.sh (DATA_SECTION_ALIGNMENT): Define. * scripttempl/elf.sc: Align .data section to DATA_SECTION_ALIGNMENT when relocating.
2024-04-01LoongArch: Fix the issue of excessive relocation generated by GD and IELulu Cai2-49/+49
Currently, whether GD and IE generate dynamic relocation is determined by SYMBOL_REFERENCES_LOCAL and bfd_link_executable. This results in dynamic relocations still being generated in some situations where dynamic relocations are not necessary (such as the undefined weak symbol in static links). We use RLARCH_TLS_GD_IE_NEED_DYN_RELOC macros to determine whether GD/IE needs dynamic relocation. If GD/IE requires dynamic relocation, set need_reloc to true and indx to be a dynamic index. At the same time, some test cases were modified to use regular expression matching instead of complete disassembly matching.
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