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2022-02-25RISC-V: Remove a loop in the ISA parserTsukasa OI1-7/+4
Since commit e601909a3287bf541c6a7d82214bb387d2c76d82 ("RISC-V: Support to parse the multi-letter prefix in the architecture string.") changed so that all prefixed extensions are parsed in single riscv_parse_prefixed_ext call, a "while" loop on riscv_parse_subset is no longer required. bfd/ChangeLog: * elfxx-riscv.c (riscv_parse_subset): Remove unnecessary loop.
2022-02-25Automatic date update in version.inGDB Administrator1-1/+1
2022-02-24Automatic date update in version.inGDB Administrator1-1/+1
2022-02-23RISC-V: PR28733, add missing extension info to 'unrecognized opcode' errorPatrick O'Neill2-0/+97
Currently we report errors as "unrecognized opcode `fence.i'" when the opcode isn't part of the selected extensions. This patch expands that error message to include the missing extension information. For example, now the error message would be "unrecognized opcode `fence.i', extension `zifencei' required". If the opcode is not a part of any extension, the error message reverts to "unrecognized opcode `<op statement>'". Signed-off-by: Patrick O'Neill <patrick@rivosinc.com> bfd/ pr 28733 * elfxx-riscv.c (riscv_multi_subset_supports_ext): New function, used to return the extension string for each INSN_CLASS_*. * elfxx-riscv.h: Added extern riscv_multi_subset_supports_ext. gas/ pr 28733 * config/tc-riscv.c (struct riscv_ip_error): New structure, contains information about errors that occur within the riscv_ip. (riscv_ip): Use struct riscv_ip_error to report more detailed errors. * testsuite/gas/riscv/c-fld-fsd-fail.l: Updated. * testsuite/gas/riscv/march-imply-i2p1-01.: Likewise.
2022-02-23Automatic date update in version.inGDB Administrator1-1/+1
2022-02-22RISC-V: Maintain a string to hold the canonical orderKito Cheng1-17/+5
Using dummy entry in riscv_supported_std_ext cause confusing and wrongly support `b` and `k` extensions. bfd/ * elfxx-riscv.c (riscv_supported_std_ext): Drop unsupported extensions. (riscv_ext_canonical_order): New. (riscv_init_ext_order): Use riscv_ext_canonical_order rather than riscv_supported_std_ext to compute canonical order. V2 Changes: - Use `*ext` rather than `*ext != NULL` for checking is reach end of string.
2022-02-22Automatic date update in version.inGDB Administrator1-1/+1
2022-02-22Re: ld: Support customized output section typeAlan Modra2-9/+16
"DO NOT EDIT!" says the comment at the top of bfd-in2.h. Move the new type field where it belongs. PR ld/28841 * section.c (struct bfd_section): Add type. Formatting. (BFD_FAKE_SECTION): Formatting. * bfd-in2.h: Regenerate.
2022-02-21Automatic date update in version.inGDB Administrator1-1/+1
2022-02-20Automatic date update in version.inGDB Administrator1-1/+1
2022-02-19Automatic date update in version.inGDB Administrator1-1/+1
2022-02-18Automatic date update in version.inGDB Administrator1-1/+1
2022-02-17Updated Serbian translations for the bfd, gold, ld and opcodes directoriesNick Clifton2-1487/+1640
2022-02-17Automatic date update in version.inGDB Administrator1-1/+1
2022-02-16ld: Support customized output section typeFangrui Song4-5/+20
bfd/ PR ld/28841 * bfd-in2.h (struct bfd_section): Add type. (discarded_section): Add field. * elf.c (elf_fake_sections): Handle bfd_section::type. * section.c (BFD_FAKE_SECTION): Add field. * mri.c (mri_draw_tree): Update function call. ld/ PR ld/28841 * ld.texi: Document new output section type. * ldlex.l: Add new token TYPE. * ldgram.y: Handle TYPE=exp. * ldlang.h: Add type_section to list of section types. * ldlang.c (lang_add_section): Handle type_section. (map_input_to_output_sections): Handle type_section. * testsuite/ld-scripts/output-section-types.t: Add tests. * testsuite/ld-scripts/output-section-types.d: Update.
2022-02-16pe_ILF_make_a_symbol_reloc segfaultAlan Modra1-1/+1
pei-aarch64-little apparently lacks support for BFD_RELOC_RVA. * peicode.h (pe_ILF_make_a_symbol_reloc): Don't segfault on NULL howto.
2022-02-16What to do when sh_addralign isn't a power of twoAlan Modra1-6/+7
BFD generally doesn't handle anything but a power of two section alignment, and ELF sh_addralign is required to be an integral power of two (or zero) by the ELF spec. Of course this is ignored by fuzzers, and because bfd_log2 rounds up, we can end up with alignment_power being 32 on a 32-bit object or 64 on a 64-bit object. That then triggers ubsan warnings in places like bfd_update_compression_header where we want to convert from alignment_power back to an alignment. I suppose we could reject object files that have non-compliant sh_addralign, but I think it's also reasonable to use the greatest power of two divisor of sh_addralign, ie. the rightmost 1 bit. * elf.c (_bfd_elf_make_section_from_shdr): Use greatest power of two divisor of sh_addralign. (_bfd_elf_assign_file_position_for_section): Likewise. (assign_file_positions_for_non_load_sections): Likewise.
2022-02-16asan: buffer overflow in vms-alpha.cAlan Modra1-1/+3
* vms-alpha.c (evax_bfd_print_dst): Sanity check another place printing strings.
2022-02-16asan: buffer overflow in peXXigen.cAlan Modra1-4/+10
* peXXigen.c (_bfd_XX_bfd_copy_private_bfd_data_common): Properly sanity check DataDirectory[PE_DEBUG_DATA].Size.
2022-02-16Automatic date update in version.inGDB Administrator1-1/+1
2022-02-15i386: Update I386_NEED_DYNAMIC_RELOC_TYPE_P for DT_TEXTRELH.J. Lu1-0/+1
Update I386_NEED_DYNAMIC_RELOC_TYPE_P to allow R_386_TLS_IE for relocation in read-only section. bfd/ PR ld/28894 * elfxx-x86.h (I386_NEED_DYNAMIC_RELOC_TYPE_P): Allow R_386_TLS_IE. ld/ PR ld/28894 * testsuite/ld-i386/i386.exp: Run pr28894. * testsuite/ld-i386/pr28894.d: New file. * testsuite/ld-i386/pr28894.s: Likewise.
2022-02-15Automatic date update in version.inGDB Administrator1-1/+1
2022-02-13ld: Keep indirect symbol from IR if referenced from shared objectH.J. Lu1-3/+2
Don't change indirect symbol defined in IR to undefined if it is referenced from shared object. bfd/ PR ld/28879 * elflink.c (_bfd_elf_merge_symbol): Don't change indirect symbol defined in IR to undefined if it is referenced from shared object. ld/ PR ld/28879 * testsuite/ld-plugin/lto.exp: Run PR ld/28879 tests. * testsuite/ld-plugin/pr28879a.cc: New file. * testsuite/ld-plugin/pr28879b.cc: Likewise.
2022-02-14Automatic date update in version.inGDB Administrator1-1/+1
2022-02-13Remove bfd ELF_RELROPAGESIZEAlan Modra6-23/+4
Now that ld properly aligns the end of the relro segment, the hack to make relro work on powerpc can disappear. bfd/ * bfd.c (bfd_emul_get_commonpagesize): Remove relro param. Don't return bed->relropagesize. * elf-bfd.h (struct elf_backend_data): Remove relropagesize. * elfxx-target.h (ELF_RELROPAGESIZE): Remove. * elf32-ppc.c (ELF_RELROPAGESIZE): Don't define. * elf64-ppc.c: Likewise. * bfd-in2.h: Regenerate. ld/ * ldemul.c (after_parse_default): Adjust bfd_emul_get_commonpagesize call.
2022-02-13Automatic date update in version.inGDB Administrator1-1/+1
2022-02-12Automatic date update in version.inGDB Administrator1-1/+1
2022-02-11x86: Disallow invalid relocation against protected symbolH.J. Lu4-4/+53
I am checking this into master and will backport it to 2.38 branch. H.J ---- On x86, GCC 12 supports -mno-direct-extern-access to enable canonical reference to protected function and disable copy relocation. With -mno-direct-extern-access, the canonical protected function symbols must be accessed via canonical reference and the protected data symbols in shared libraries are non-copyable. Under glibc 2.35, non-canonical reference to the canonical protected function will get the run-time error: ./y: internal_f: ./libfoo.so: non-canonical reference to canonical protected function and copy relocations against the non-copyable protected symbols will get the run-time error: ./x: internal_i: ./libfoo.so: copy relocation against non-copyable protected symbol Update x86 linker to disallow non-canonical reference to the canonical protected function: ld: plt.o: non-canonical reference to canonical protected function `internal_f' in libfoo.so ld: failed to set dynamic section sizes: bad value and copy relocation against the non-copyable protected symbol: ld: main.o: copy relocation against non-copyable protected symbol `internal_i' in libfoo.so at link-time. bfd/ PR ld/28875 * elf-properties.c (_bfd_elf_parse_gnu_properties): Don't skip shared libraries for GNU_PROPERTY_1_NEEDED_INDIRECT_EXTERN_ACCESS. * elf32-i386.c (elf_i386_scan_relocs): Disallow non-canonical reference to canonical protected function. * elf64-x86-64.c (elf_x86_64_scan_relocs): Likewise. * elfxx-x86.c (elf_x86_allocate_dynrelocs): Don't allow copy relocation against non-copyable protected symbol. ld/ PR ld/28875 * testsuite/ld-i386/i386.exp: Check non-canonical reference to canonical protected function and check copy relocation against non-copyable protected symbol. * testsuite/ld-i386/pr21997-1.err: New file. * testsuite/ld-i386/pr28875.err: Likewise. * testsuite/ld-i386/pr28875a.c: Likewise. * testsuite/ld-i386/pr28875b.c: Likewise. * testsuite/ld-x86-64/pr21997-1a.err: Updated. * testsuite/ld-x86-64/pr21997-1b.err: Likewise. * testsuite/ld-x86-64/pr28875-data.err: New file. * testsuite/ld-x86-64/pr28875-func.err: Likewise. * testsuite/ld-x86-64/x86-64.exp: Check non-canonical reference to canonical protected function and check copy relocation against non-copyable protected symbol.
2022-02-11bfd: Remove return with expression in void functionMichael Forney2-1/+6
* bfd.c (bfd_set_gp_value): Remove return with expression in void function.
2022-02-11Automatic date update in version.inGDB Administrator1-1/+1
2022-02-10Automatic date update in version.inGDB Administrator1-1/+1
2022-02-09Update the obsolete list and how-to-make-a-release documentation now that ↵Nick Clifton2-3/+8
the 2.38 release is out.
2022-02-09Work around gcc-4 warnings in elf64-ppc.cAlan Modra1-22/+14
elf64-ppc.c: In function 'ppc64_elf_size_dynamic_sections': elf64-ppc.c:10309:45: error: value computed is not used [-Werror=unused-value] ++lgot_ents, ++lgot_masks, isym != NULL && isym++) It is of course a silly warning, fixed in later versions of gcc. I wrote "isym != NULL && isym++" rather than the simpler "isym++" to stop sanitisers complaining about incrementing a NULL pointer. isym is of course unused in any code path where it might start off as NULL. Sometimes you can't win. So don't try to be clever in reading local symbols only when needed. 99 times out of 100 they will be cached anyway. * elf64-ppc.c (ppc64_elf_size_dynamic_sections): Avoid annoying warnings by always reading local syms. (ppc64_elf_layout_multitoc): Likewise.
2022-02-09Automatic date update in version.inGDB Administrator1-1/+1
2022-02-08RISC-V: Stop reporting warnings for mismatched extension versionsPalmer Dabbelt1-54/+24
The extension version checking logic is really just too complicated to encode into the linker, trying to do so causes more harm than good. This removes the checks and the associated tests, leaving the logic to keep the largest version of each extension linked into the target. bfd/ * elfnn-riscv.c (riscv_version_mismatch): Rename to riscv_update_subset_version, and stop reporting warnings on version mismatches. (riscv_merge_std_ext): Adjust calls to riscv_version_mismatch. (riscv_merge_multi_letter_ext): Likewise. ld/ * testsuite/ld-riscv-elf/attr-merge-arch-failed-01.d: Remove * testsuite/ld-riscv-elf/attr-merge-arch-failed-01a.s: Likewise * testsuite/ld-riscv-elf/attr-merge-arch-failed-01b.s: Likewise * testsuite/ld-riscv-elf/attr-merge-arch-failed-02.d: Likewise * testsuite/ld-riscv-elf/attr-merge-arch-failed-02a.s: Likewise * testsuite/ld-riscv-elf/attr-merge-arch-failed-02b.s: Likewise * testsuite/ld-riscv-elf/attr-merge-arch-failed-02c.s: Likewise * testsuite/ld-riscv-elf/attr-merge-arch-failed-02d.s: Likewise * testsuite/ld-riscv-elf/attr-merge-user-ext-01.d: New test. * testsuite/ld-riscv-elf/attr-merge-user-ext-rv32i21_m2p0.s: Likewise. * testsuite/ld-riscv-elf/attr-merge-user-ext-rv32i21_m2p1.s: Likewise. * testsuite/ld-riscv-elf/ld-riscv-elf.exp: Remove obselete attr-merge-arch-failed-{01,02}, replace with attr-merge-user-ext-01. Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
2022-02-07i386: Allow GOT32 relocations against ABS symbolsH.J. Lu1-4/+6
GOT32 relocations are allowed since absolute value + addend is stored in the GOT slot. Tested on glibc 2.35 build with GCC 11.2 and -Os. bfd/ PR ld/28870 * elfxx-x86.c (_bfd_elf_x86_valid_reloc_p): Also allow GOT32 relocations. ld/ PR ld/28870 * testsuite/ld-i386/i386.exp: Run pr28870. * testsuite/ld-i386/pr28870.d: New file. * testsuite/ld-i386/pr28870.s: Likewise.
2022-02-08Automatic date update in version.inGDB Administrator1-1/+1
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2022-02-06Automatic date update in version.inGDB Administrator1-1/+1
2022-02-05x86: Skip undefined symbol when finishing DT_RELRH.J. Lu1-2/+4
Don't abort for undefined symbol when finishing DT_RELR. Instead, skip undefined symbol. Undefined symbol will be reported by relocate_section. * elfxx-x86.c (elf_x86_size_or_finish_relative_reloc): Skip undefined symbol in finishing phase.
2022-02-05Detect .eh_frame_hdr earlier for SIZEOF_HEADERSAlan Modra4-11/+19
Current code detects the need for PT_GNU_EH_FRAME using a field set by _bfd_elf_discard_section_eh_frame_hdr, which is called fairly late in the linking process. Use the elf hash table eh_info instead, which is set up earlier by size_dynamic_sections. * elf-bfd.h (struct output_elf_obj_tdata): Delete eh_frame_hdr. (elf_eh_frame_hdr): Don't define. (_bfd_elf_discard_section_eh_frame_hdr): Update prototype. * elf-eh-frame.c (_bfd_elf_discard_section_eh_frame_hdr): Delete abfd parameter. Don't set elf_eh_frame_hdr. * elf.c (elf_eh_frame_hdr): New function. (get_program_header_size): Adjust elf_eh_frame_hdr call. (_bfd_elf_map_sections_to_segments): Likewise.
2022-02-05Automatic date update in version.inGDB Administrator1-1/+1
2022-02-04Automatic date update in version.inGDB Administrator1-1/+1
2022-02-03x86: Update X86_64_GOT_TYPE_P to cover more GOT relocationsH.J. Lu1-1/+5
Add R_X86_64_GOT32, R_X86_64_GOT64, R_X86_64_GOTPCREL64 and R_X86_64_GOTPLT64 to X86_64_GOT_TYPE_P to cover more GOT relocations. PR ld/28858 * elfxx-x86.h (X86_64_GOT_TYPE_P): Add R_X86_64_GOT32, R_X86_64_GOT64, R_X86_64_GOTPCREL64 and R_X86_64_GOTPLT64.
2022-02-03PowerPC64 treatment of absolute symbolsAlan Modra1-62/+126
Supporting -static-pie on PowerPC64 requires the linker to properly treat SHN_ABS symbols for cases like glibc's _nl_current_LC_CTYPE_used absolute symbol. I've been slow to fix the linker on powerpc because there is some chance that this will break some shared libraries or PIEs. bfd/ * elf64-ppc.c (ppc64_elf_check_relocs): Consolidate local sym handling code. Don't count dyn relocs against non-dynamic absolute symbols. (dec_dynrel_count): Adjust to suit. (ppc64_elf_edit_toc): Don't remove entries for absolute symbols when pic. (allocate_got): Don't allocate space for got relocs against non-dynamic absolute syms. (ppc64_elf_layout_multitoc): Likewise. (got_and_plt_relr): Likewise. (ppc64_elf_size_dynamic_sections): Likewise for local got. (got_and_plt_relr_for_local_syms): Likewise. (ppc64_elf_size_stubs): Don't allocate space for relr either. (ppc64_elf_relocate_section): Don't write relocs against non-dynamic absolute symbols. Don't optimise got and toc code sequences loading absolute symbol entries. ld/ * testsuite/ld-powerpc/abs-reloc.s, * testsuite/ld-powerpc/abs-static.d, * testsuite/ld-powerpc/abs-static.r, * testsuite/ld-powerpc/abs-pie.d, * testsuite/ld-powerpc/abs-pie.r, * testsuite/ld-powerpc/abs-shared.d, * testsuite/ld-powerpc/abs-shared.r, * testsuite/ld-powerpc/abs-pie-relr.d, * testsuite/ld-powerpc/abs-pie-relr.r, * testsuite/ld-powerpc/abs-shared-relr.d, * testsuite/ld-powerpc/abs-shared-relr.r: New tests. * testsuite/ld-powerpc/powerpc.exp: Run them.
2022-02-03Automatic date update in version.inGDB Administrator1-1/+1
2022-02-02Stop the BFD library complaining about compressed dwarf debug string ↵Nick Clifton2-2/+12
sections being too big. PR 28834 * dwarf2.c (read_section): Change the heuristic that checks for overlarge dwarf debug info sections.
2022-02-02or1k: Avoid R_OR1K_GOT16 signed overflow by using special howtoStafford Horne2-4/+27
Previously when fixing PR 21464 we masked out upper bits of the relocation value in order to avoid overflow complaints when acceptable. It turns out this does not work when the relocation value ends up being signed. To fix this this patch introduces a special howto with complain_on_overflow set to complain_overflow_dont. This is used in place of the normal R_OR1K_GOT16 howto when we detect R_OR1K_GOT_AHI16 relocations. bfd/ChangeLog: PR 28735 * elf32-or1k.c (or1k_elf_got16_no_overflow_howto): Define. (or1k_elf_relocate_section): Use new howto instead of trying to mask out relocation bits.
2022-02-02Automatic date update in version.inGDB Administrator1-1/+1
2022-02-01Automatic date update in version.inGDB Administrator1-1/+1
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