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2019-07-18[PowerPC64] Don't store TLS_EXPLICIT in tls_maskAlan Modra1-0/+10
This saves a bit in tls_mask, and fixes a bug that could be triggered in the unlikely case that both @got (usual ELF style) and @toc (PowerOpen style) code was used to set up args for __tls_get_addr. * elf64-ppc.c (TLS_EXPLICIT): Define as 256. (ppc64_elf_check_relocs): Don't store TLS_EXPLICIT even if char is more than 8 bits. (ppc64_elf_tls_optimize): Likewise. Make tls_set, tls_clear, and tls_type vars unsigned int. (ppc64_elf_relocate_section): Use r_type rather than TLS_EXPLICIT to select r_type edit.
2019-07-18[PowerPC] Rename TLS_TPRELGD to TLS_GDIEAlan Modra1-0/+6
Choose a better name, that reflects why the flag is set (GD to IE optimisation) rather than what the flag produces (TPREL64 reloc on a single GOT entry replacing a tls_index pair). * elf32-ppc.c (TLS_GDIE): Rename from TLS_TPRELGD throughout file. Correct comment. * elf64-ppc.c (TLS_GDIE): Likewise.
2019-07-18[PowerPC64] correct tprel offset limitAlan Modra1-0/+5
I don't expect anyone will have hit this bug. You'd need a TLS segment of 2G before you'd notice. * elf64-ppc.c (ppc64_elf_tls_optimize): Correct test for allowed range of tp-relative offsets.
2019-07-15Fix __bss_start assertion failure in _bfd_elf_fix_symbol_flagsAlan Modra1-0/+5
> Building LLVM 6.0 on FreeBSD/powerpc (devel/llvm60 port) the assertion > in the subject trips (displays twice) when linking libLTO.so.1. The > issue has been filed in FreeBSD's bugzilla, at > https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=237068 . It appears > the 'llvm::hashing::detail::get_execution_seed()::seed@@JL_LLVM_6.0' > symbol is being weakly aliased to an indirect symbol > __bss_start@@JL_LLVM_6.0. Since __bss_start@@JL_LLVM_6.0 is an > indirect symbol, it fails the assertion. I haven't looked under a debugger at your testcase but I think I know what is going on here. You have a shared library with a weakly defined llvm::hashing::detail::get_execution_seed()::seed which happens to be at the same location as __bss_start in that library. At the time the linker loads symbols for that library, it sees they are both versioned and thus introduces non-versioned indirect symbols for them. The linker considers the symbols as possibly being aliases, setting up h->u.alias and h->is_weakalias such that __bss_start@@JL_LLVM_6.0 is the definition. No real problem so far, the definition is bfd_link_hash_defined, except that the zero size, no type __bss_start symbol possibly should not be considered an alias in the first place. Later, __bss_start as defined by the linker script is entered into the linker symbol table. This is similar to __bss_start being defined by a regular object file in that ELF symbol resolution rules say that the value of __bss_start in the library is overridden by __bss_start in the executable/library being produced. So to accomplish the override, ld flips __bss_start from being an indirect symbol pointing at __bss_start@@JL_LLVM_6.0 to __bss_start@@JL_LLVM_6.0 being an indirect symbol pointing at __bss_start. That's how we get an unexpected indirect symbol and hit the assert. What should happen I think, is for the def->def_regular code above the assert to run in this case. The symbols are no longer aliases. * elflink.c (_bfd_elf_fix_symbol_flags): If the def for an alias is no longer bfd_link_hash_defined, clear the alias.
2019-07-13Dynamic TLS section symbolsAlan Modra1-0/+12
It is possible to create shared libraries on PowerPC using -ftls-model=inital-exec or -ftls-model=local-exec. The first is half reasonable, getting you a shared library that can't be dlopen'd but otherwise is reasonable. The second is quite bad. Not only do you lose being able to dlopen, the library also has dynamic text relocations. Worse, the TPREL16_LO, TPREL16_HA and other TPREL16 dynamic relocs emitted were wrong, resulting in wrong values being applied by ld.so. Using the first TLS section symbol in dynamic relocations for local TLS symbols doesn't work. It's wrong because TLS symbols used by TLS relocs have values relative to the TLS segment, whereas the TLS section symbols are addresses. This patch instead uses a symbol index of zero which is used elsewhere by PowerPC on dynamic TLS relocs. It's not strictly ABI compliant to use a non-TLS symbol with TLS relocs but symbol index zero can be interpreted as "no symbol". Not using the first TLS section symbol means it doesn't need to be dynamic. The patch also fixes a further problem with PowerPC32 dynamic TPREL16* relocs, which shouldn't have the symbol value in the addend as we do for non-TLS symbols. bfd/ * elflink.c (_bfd_elf_omit_section_dynsym_default): Don't keep tls_sec. (_bfd_elf_init_1_index_section): Prefer not using TLS sections. (_bfd_elf_init_2_index_sections): Likewise. * elf64-ppc.c (ppc64_elf_relocate_section): When emitting dynamic relocations for local TLS symbols, use STN_UNDEF as the relocation symbol. * elf32-ppc.c (ppc_elf_relocate_section): Likewise, and don't leave TLS symbol value in the addend. ld/ * testsuite/ld-powerpc/tlsso.r: Update. * testsuite/ld-powerpc/tlsso32.g: Update. * testsuite/ld-powerpc/tlsso32.r: Update. * testsuite/ld-powerpc/tlstocso.r: Update. * testsuite/ld-cris/tls-dso-dtpoffd2.d: Update. * testsuite/ld-cris/tls-dso-dtpoffd4.d: Update. * testsuite/ld-cris/tls-dso-tpoffgotcomm1.d: Update. * testsuite/ld-cris/tls-gd-1.d: Update. * testsuite/ld-cris/tls-gd-1h.d: Update. * testsuite/ld-cris/tls-gd-2.d: Update. * testsuite/ld-cris/tls-gd-2h.d: Update. * testsuite/ld-cris/tls-ie-10.d: Update. * testsuite/ld-cris/tls-ie-11.d: Update. * testsuite/ld-cris/tls-ie-8.d: Update. * testsuite/ld-cris/tls-ie-9.d: Update. * testsuite/ld-cris/tls-js1.d: Update. * testsuite/ld-cris/tls-ld-4.d: Update. * testsuite/ld-cris/tls-ld-5.d: Update. * testsuite/ld-cris/tls-ld-6.d: Update. * testsuite/ld-cris/tls-ld-7.d: Update. * testsuite/ld-cris/tls-ldgd-14.d: Update. * testsuite/ld-cris/tls-ldgd-15.d: Update. * testsuite/ld-cris/tls-ldgdx-14.d: Update. * testsuite/ld-cris/tls-ldgdx-15.d: Update. * testsuite/ld-cris/tls-local-54.d: Update. * testsuite/ld-cris/tls-local-60.d: Update. * testsuite/ld-cris/tls-local-61.d: Update. * testsuite/ld-cris/tls-local-63.d: Update. * testsuite/ld-cris/tls-local-64.d: Update. * testsuite/ld-cris/tls-ok-30.d: Update. * testsuite/ld-cris/tls-ok-32.d: Update. * testsuite/ld-cris/tls-ok-34.d: Update. * testsuite/ld-mips-elf/tls-multi-got-1.got: Update. * testsuite/ld-mips-elf/tls-multi-got-1.r: Update. * testsuite/ld-mips-elf/tlsdyn-pie-o32.d: Update. * testsuite/ld-mips-elf/tlsdyn-pie-o32.got: Update. * testsuite/ld-mips-elf/tlslib-o32-hidden.got: Update. * testsuite/ld-mips-elf/tlslib-o32-ver.got: Update. * testsuite/ld-mips-elf/tlslib-o32.got: Update. * testsuite/ld-s390/tlspic.rd: Update. * testsuite/ld-s390/tlspic_64.rd: Update. * testsuite/ld-sparc/tlssunnopic32.rd: Update. * testsuite/ld-sparc/tlssunnopic64.rd: Update. * testsuite/ld-sparc/tlssunpic32.rd: Update. * testsuite/ld-sparc/tlssunpic64.rd: Update.
2019-07-08PR24785, bfd crashes on empty .PPC.EMB.apuinfo sectionAlan Modra1-0/+6
PR 24785 * elf32-ppc.c (_bfd_elf_ppc_set_arch): Sanity check .PPC.EMB.apuinfo size before reading first word.
2019-07-02Stop the BFD library from issuing a warning message when processing ↵Nick Clifton1-0/+9
allocated sections in debuginfo files that lie outside of any loadable segment. PR 24717 * elf.c (is_debuginfo_file): New function. (assign_file_positions_for_non_load_sections): Do not warn about allocated sections outside of loadable segments if they are found in a debuginfo file. * elf-bfd.h (is_debuginfo_file): Prototype.
2019-07-02Fix a bug recently introduced to the linker where it would complain about a ↵Nick Clifton1-0/+6
section being larger than a file, even if the section was artificial. PR 24753 bfd * compress.c (bfd_get_full_section_contents): Do not complain about linker created sections that are larger than the file size. ld * emultempl/aarch64elf.em (_aarch64_add_stub_section): Include the LINKER_CREATED section flag when creating the stub section.
2019-07-02PR ld/24709 [arm] linker crash and assertion failure with CMSEChristophe Lyon1-0/+7
As discussed in the PR, we do not support the case where CMSE stubs are inserted too far from their destination. This would require an intermediate long-branch stub, which is tricky in this context. Instead of crashing, this patch emit an error message and exits. 2019-07-02 Christophe Lyon <christophe.lyon@linaro.org> * bfd/elf32-arm.c (CMSE_STUB_NAME): New define. (elf32_arm_get_stub_entry): Do not try to emit long-branch stubs for CMSE stubs. (arm_dedicated_stub_output_section_name): Use CMSE_STUB_NAME. Change-Id: I6d4e1c0fdee6bb9f4b07e5e1b46700b5ba31c62e
2019-07-02Ensure that debug information is retained for ARMv8-M security functions.Srinath Parvathaneni1-0/+6
Consider a file containing only Armv8-M secure entry functions. This file is compiled and linked with "-march=armv8-m.main -mfloat-abi=hard -mfpu=fpv5-sp-d16 -mcmse -static --specs=rdimon.specs -Wl,--section-start,.gnu.sgstubs=0x190000 -ffunction-sections -fdata-sections -Wl,--gc-sections -g" options to generate an executable. The executable generated does not contain any debug information of these secure entry functions even though it contains secure entry functions in the .text section. This patch fixes this problem.
2019-07-01Correct the calculation of offsets for ARM exidx relocs when performing a ↵Nick Clifton1-0/+6
partial link. PR 23839 bfd * elf32-arm.c (elf32_arm_update_relocs): Do not include the section VMA in the offset used to update exidx relocs. ld * testsuite/ld-arm/unwind-4.d: Adjust for corrected calculation of exidx relocs.
2019-06-28Prevent attempts to allocate excessive amounts of memory when parsing ↵Nick Clifton1-0/+8
corrupt ELF files. PR 24708 * elf.c (_bfd_elf_slurp_version_tables): Check for an excessively large version reference section. * compress.c (bfd_get_full_section_contents): Check for an uncompressed section whose size is larger than the file size.
2019-06-28Plugin target handlingAlan Modra1-0/+11
This patch fixes failures with LTO on mingw32 targets. Since git commit 7cf7fcc83c all possible targets (minus binary) are matched in bfd_check_format_matches rather than lower priority targets being excluded once a higher priority target matches. During linking that results in the ld/plugin.c plugin_object_p function being called with the input file xvec set to plugin_vec, which means plugin_get_ir_dummy_bfd doesn't see the real format of the file (pe-i386). It defaults to the output format instead, which happens to be pei-i386, and this wrong choice persists for the dummy bfd. pei-i386 isn't recognised as a valid linker input file. So, omit recognizing a plugin object in bfd_check_format_matches when some other object format matches, and make sure those other object formats are checked first. * format.c (bfd_check_format_matches): Don't match plugin target if another target matches. Expand comment. * targets.c (_bfd_target_vector): Move plugin_vec after all other non-corefile targets, outside !SELECT_VECS. * config.bfd: Don't handle targ=plugin here. * configure.ac: Don't add plugin to enable_targets or handle in target loop setting selvecs and other target vars. * configure: Regenerate.
2019-06-26Ensure that when attempting to process an ARM Mach-O file with unknown ↵Nick Clifton1-0/+8
relocs, that a suitable error message is displayed. PR 24703 binutils* bucomm.c (bfd_nonfatal): If no bfd error code has been set then indicate this in the output. (bfd_nonfatal_message): Likewise. bfd * mach-o-arm.c (bfd_mach_o_arm_canonicalize_one_reloc): Add error messages for failures. * mach-o.c (bfd_mach_o_canonicalize_relocs): Set an bfd error code if returning an error value.
2019-06-25bfd/elf-properties: avoid shadowing a C library symbolJan Beulich1-0/+5
With my (oldish) gcc/glibc combination I'm seeing .../bfd/elf-properties.c: In function ‘elf_find_and_remove_property’: .../bfd/elf-properties.c:244: error: declaration of ‘remove’ shadows a global declaration /usr/include/stdio.h:157: error: shadowed declaration is here
2019-06-24RISC-V: Enable lui relaxation for CODE and MERGE sections.Jim Wilson1-0/+9
2019-06-24 Ilia Diachkov <ilia.diachkov@optimitech.com> bfd/ * elfnn-riscv.c (_bfd_riscv_relax_lui): Delete early exit when SEC_MERGE or SEC_CODE flags are set. (_bfd_riscv_relax_section): New local symtype. Set sym_sec and symtype consistently. Don't include sec_addr (sym_sec) in symval. Add check for SEC_INFO_TYPE_MERGE and call _bfd_merged_section_offset. Add sec_addr (sym_sec) after handling merge sections.
2019-06-24elf: Remove the property after reporting its removalH.J. Lu1-0/+6
commit d2ef37ebd9f771d06edf1fdea37970f60b242b2d Author: H.J. Lu <hjl.tools@gmail.com> Date: Fri Dec 7 08:30:30 2018 -0800 elf: Report property change when merging properties failed to remove the property after reporting it has been removed. This patch corrects it. bfd/ PR ld/24721 * elf-properties.c (elf_merge_gnu_property_list): Remove the property after reporting property removal. ld/ PR ld/24721 * testsuite/ld-x86-64/x86-64.exp: Run PR ld/24721 tests. * testsuite/ld-x86-64/pr24721-x32.d: New file. * testsuite/ld-x86-64/pr24721.d: Likewise. * testsuite/ld-x86-64/pr24721.map: Likewise. * testsuite/ld-x86-64/pr24721a.s: Likewise. * testsuite/ld-x86-64/pr24721b.s: Likewise.
2019-06-23PR24704, Internal error building skiboot for powerpc64-linux-gnuAlan Modra1-0/+7
While the skiboot linker script bears some culpability in this PR, it's also true that the GOT indirect to GOT relative optimisation for 16-bit offsets isn't safe. At least, it isn't safe to remove the GOT entry based on distance between the GOT pointer and symbol calculated from the preliminary layout. So this patch removes that optimisation, and reduces the range allowed for 32-bit and 34-bit offsets. PR 24704 bfd/ * elf64-ppc.c (R_PPC64_GOT16_DS): Don't set has_gotrel. (ppc64_elf_edit_toc): Don't remove R_PPC64_GOT16_DS got entries. Reduce range of offsets allowed for other GOT relocs. ld/ * testsuite/ld-powerpc/elfv2exe.d: Update. * testsuite/ld-powerpc/elfv2so.d: Update.
2019-06-23PR24689 again, string table corruptionAlan Modra1-0/+5
Depending on optimisation level and gcc version, git commit 890f750a3b introduces a false positive warning that i_shdrp may be used uninitialized. PR 24689 * elfcode.h (elf_object_p): Warning fix.
2019-06-21PR24689, string table corruptionAlan Modra1-0/+5
The testcase in the PR had a e_shstrndx section of type SHT_GROUP. hdr->contents were initialized by setup_group rather than being read from the file, thus last byte was not zero and string dereference ran off the end of the buffer. PR 24689 * elfcode.h (elf_object_p): Check type of e_shstrndx section.
2019-06-19PR24697, R_PPC_EMB_SDA21 relocationAlan Modra1-0/+6
PR 24697 * elf32-ppc.c (ppc_elf_relocate_section): Don't read insn for R_PPC_EMB_RELSDA. Mask low bit of R_PPC_EMB_SDA21 r_offset.
2019-06-19PowerPC64 notoc callsAlan Modra1-0/+6
Calls from functions that don't have a valid toc pointer in r2 (these calls are marked with _NOTOC relocs) to functions that require r2 valid must go via the callee global entry point. This patch corrects the condition the linker was using to detect functions that require r2 to be valid. Values of both zero and one in st_other local entry bits mean a function doesn't care about r2. * elf64-ppc.c (ppc64_elf_inline_plt): Correct st_other test for functions that require r2 valid to use local entry. (ppc64_elf_size_stubs, ppc64_elf_relocate_section): Likewise.
2019-06-17aarch64: remove unnecessary loc_hash_table traversalSzabolcs Nagy1-0/+6
The loc_hash_table should only contain local ifunc symbols. The current code already aborts if there is anything else and for defined ifunc symbols elfNN_aarch64_allocate_dynrelocs is a no-op. bfd/ChangeLog: * elfnn-aarch64.c (elfNN_aarch64_allocate_local_dynrelocs): Remove. (elfNN_aarch64_size_dynamic_sections): Remove loc_hash_table traversal with elfNN_aarch64_allocate_local_dynrelocs.
2019-06-14Add R_AARCH64_P32_MOVW_PREL_* ELF32 relocsSzabolcs Nagy1-0/+4
These ilp32 relocations were missing for some reason. bfd/ChangeLog: * elfnn-aarch64.c: Enable MOVW_PREL relocs for ELF32. include/ChangeLog: * elf/aarch64.h (R_AARCH64_P32_MOVW_PREL_G0): Define. (R_AARCH64_P32_MOVW_PREL_G0_NC): Define. (R_AARCH64_P32_MOVW_PREL_G1): Define. ld/ChangeLog: * testsuite/ld-aarch64/aarch64-elf.exp: Add emit-relocs-22 and -23. * testsuite/ld-aarch64/emit-relocs-22.d: New test. * testsuite/ld-aarch64/emit-relocs-22.s: New test. * testsuite/ld-aarch64/emit-relocs-23.d: New test. * testsuite/ld-aarch64/emit-relocs-23.s: New test.
2019-06-14Regenerate with approved autotools versionAlan Modra1-0/+5
bfd/ * Makefile.in: Regenerate. * configure: Regenerate. binutils/ * Makefile.in: Regenerate. * aclocal.m4: Regenerate. * doc/Makefile.in: Regenerate. gas/ * Makefile.in: Regenerate. * configure: Regenerate. * doc/Makefile.in: Regenerate. ld/ * Makefile.in: Regenerate. * configure: Regenerate. libctf/ * configure: Regenerate.
2019-06-14PowerPC comment fixesAlan Modra1-0/+4
"paddi rt,sym@pcrel" as an abbreviation for "paddi rt,0,sym@pcrel,1" is invalid, so replace with "pla rt,sym@pcrel" which is a valid form of "pla rt,sym@pcrel(0),1". * elf64-ppc.c: Fix comments involving paddi.
2019-06-12Prevent a seg-fault from objdup when disassembling binaries which do not ↵Adam Lackorzymski1-0/+7
contain a symbol table. PR 24643 * elf32-arm.c (arm_elf_find_function): Fail if the symol table is absent, or the bfd is not in the ELF formart. * elfnn-aarch64.c (aarch64_elf_find_function): Likewise.
2019-06-10Add support for NetBSD/sh3 core file sections. Merge multiple copies of ↵Christos Zoulas1-0/+10
auxv section creation into one function. PR 24650 * elf.c (elfcore_make_auxv_note_section): New function. (elfcore_grok_note): Use it. (elfcore_grok_freebsd_note): Likewise. (elfcore_grok_openbsd_note): Likewise. (elfcore_grok_netbsd_note): Likewise. Plus add support for NT_NETBSDCORE_AUXV notes.
2019-06-06[BFD, AArch64] Fix PT_GNU_PROPERTY alignment issueSudakshina Das1-0/+5
If the new GNU property section was being created by the linker (this will happen only if none of the inputs have any GNU property section but the command line to the linker forces a bti with --force-bti), the alignment of the section and hence the program header of PT_GNU_PROPERTY type was not being set correctly. This patch fixes this issue. bfd/ChangeLog: 2019-06-06 Sudakshina Das <sudi.das@arm.com> * elfxx-aarch64.c (_bfd_aarch64_elf_link_setup_gnu_properties): Set alignment of the new gnu property section. ld/ChangeLog: 2019-06-06 Sudakshina Das <sudi.das@arm.com> * testsuite/ld-aarch64/aarch64-elf.exp: Add new tests. * testsuite/ld-aarch64/property-bti-pac4-a.d: New test. * testsuite/ld-aarch64/property-bti-pac4-b.d: New test. * testsuite/ld-aarch64/property-bti-pac4.s: New test.
2019-06-06[LD, AArch64] Move ELF options behind -zSudakshina Das1-0/+8
This patch moves the current AArch64 ld options of --force-bti and --pac-plt to -z force-bti and -z pac-plt since these are ELF specific options. *** bfd/ChangeLog *** 2019-06-06 Sudakshina Das <sudi.das@arm.com> * bfd-in.h: Change comment. * bfd-in2.h: Regenerate. * elfnn-aarch64.c (elfNN_aarch64_merge_gnu_properties): Update warning. * elfxx-aarch64.c (_bfd_aarch64_elf_link_setup_gnu_properties): Likwise. *** ld/ChangeLog *** 2019-06-06 Sudakshina Das <sudi.das@arm.com> * NEWS: Update options names. * emultempl/aarch64elf.em (OPTION_FORCE_BTI, OPTION_PAC_PLT): Remove. (PARSE_AND_LIST_LONGOPTS): Remove force-bti and pac-plt. (PARSE_AND_LIST_OPTIONS): Update to -z. (PARSE_AND_LIST_ARGS_CASE_Z_AARCH64): New. (PARSE_AND_LIST_ARGS_CASE_Z): Add PARSE_AND_LIST_ARGS_CASE_Z_AARCH64. (PARSE_AND_LIST_ARGS_CASES): Move cases for these options. * testsuite/ld-aarch64/bti-pac-plt-1.d: Update option. * testsuite/ld-aarch64/bti-pac-plt-2.d: Likewise. * testsuite/ld-aarch64/bti-plt-1.d: Likewise. * testsuite/ld-aarch64/bti-plt-2.d: Likewise. * testsuite/ld-aarch64/bti-plt-3.d: Likewise. * testsuite/ld-aarch64/bti-plt-4.d: Likewise. * testsuite/ld-aarch64/bti-plt-6.d: Likewise. * testsuite/ld-aarch64/bti-plt-7.d: Likewise. * testsuite/ld-aarch64/bti-warn.d: Likewise. * testsuite/ld-aarch64/pac-plt-1.d: Likewise. * testsuite/ld-aarch64/pac-plt-2.d: Likewise.
2019-05-28MIPS/LD: Skip overflow check for %pcrel_hi relocationsFaraz Shahbazker1-0/+5
Overflow checks were removed for all hi16 relocations except PC-relative high relocations per PR ld/16720. Remove overflow checks from %pcrel_hi relocations so that we can correctly handle negative offsets from PC. bfd/ * elfxx-mips.c (mips_elf_calculate_relocation) <R_MIPS_PCHI16>: Remove overflow check. ld/ * testsuite/ld-mips-elf/undefweak-overflow.s: Remove test case for pcrel_hi/pcrel_lo. * testsuite/ld-mips-elf/undefweak-overflow.d: Update to match. * testsuite/ld-mips-elf/reloc-pcrel-r6.s: New test source. * testsuite/ld-mips-elf/reloc-pcrel-r6.d: New test linker script. * testsuite/ld-mips-elf/reloc-pcrel-r6.ld: New test. * testsuite/ld-mips-elf/mips-elf.exp: Run the new test.
2019-05-28COFF linker segmentation faultsAlan Modra1-0/+6
A plugin can change the element, so call the generic bfd_link_add_symbols. PR 24596 * cofflink.c (coff_link_check_archive_element): Don't assume element is a coff object file after calling add_archive_element.
2019-05-28Microblaze linker segmentation faultAlan Modra1-0/+6
PR 24596 * elf32-microblaze.c (microblaze_elf_finish_dynamic_sections): Don't attempt to set sh_entsize for excluded PLT section.
2019-05-28Alpha-linux linker segmentation faultAlan Modra1-0/+7
This patch cures a linker segfault, and "FAIL: Build pr22263-1". PR 24596 * elf64-alpha.c (elf64_alpha_relocate_section): Don't attempt to emit R_ALPHA_GOTTPREL in PIEs, for which no space is allocated in alpha_dynamic_entries_for_reloc.
2019-05-28LM32 linker segmentation faultsAlan Modra1-0/+7
PR 24596 * elf32-lm32.c (lm32_elf_finish_dynamic_sections): Don't segfault on NULL output_section. * elflink.c (elf_final_link_free): Don't free -1 symshndxbuf.
2019-05-28m68k linker segmentation faultsAlan Modra1-0/+8
This doesn't fix the underlying bug, but an abort is better than a segfault. PR 24596 * elf32-m68k.c (elf_m68k_get_got_entry): Don't create a new entry when MUST_FIND. Abort when MUST_FIND not found. (elf_m68k_get_bfd2got_entry): Likewise. (elf_m68k_relocate_section): Remove now useless assert.
2019-05-28HPPA64 linker segmentation faultsAlan Modra1-0/+8
One of the ld tests produces: failed with: <Segmentation fault>, no expected output FAIL: Discarded dynamic relocation section This patch cures the segv. (The test still fails with ld producing a really messed up output, DT_RELA at address 0!) PR 24596 * elf64-hppa.c (elf64_hppa_finalize_dynreloc): Get the output bfd from bfd_link_info, not an output section owner. (elf64_hppa_finish_dynamic_symbol, elf64_hppa_finalize_opd): Likewise. (elf_hppa_final_link_relocate): Likewise.
2019-05-28Obsolete tic30-aout, and linker segmentation faultsAlan Modra1-0/+8
See also the FIXME. tic30-aout linker support is so bad (and has been that way since the initial tic30-aout commit) that I'm obsoleting the target. This patch fixes numerous linker testsuite segmentation faults. PR 24596 * aout-tic30.c (MY_bfd_final_link): Don't segfault on missing create_object_symbols_section, obj_textsec, obj_datasec or obj_bsssec. Fix other errors in placement. * config.bfd: Obsolete tic30-aout.
2019-05-28XCOFF linker segmentation faultAlan Modra1-0/+8
The XCOFF linker temporarily trims the output bfd section list, without adjusting section_count to suit. This is a little rude, but the dwarf line number code can easily cope with this situation. So check for a NULL end of list as well as limiting the saved section VMAs to the first section_count list entries. Also fixes -FAIL: Weak test 3 (main, static) (32-bit) -FAIL: Weak test 3 (main, static) (64-bit) PR 24596 * dwarf2.c (save_section_vma, section_vma_same): Check for NULL end of section list as well as section_count. * xcofflink.c (xcoff_link_add_symbols): Fix temporarily changed section list before returning error.
2019-05-27Another generic ELF target assertion failureAlan Modra1-0/+4
After fixing the ld-elf/pr22836-1a segmentation fault we run into an assertion failure due to the generic ELF target not removing empty SHT_GROUP sections. Avoid that. * elf.c (bfd_elf_set_group_contents): Exit on zero size section.
2019-05-27Generic ELF target group signature symbolAlan Modra1-0/+5
Even though the generic ELF target doesn't handle groups correctly, this helps avoid a segfault in bfd_elf_set_group_contents seen on d30v-elf, dlx-elf, pj-elf, and xgate-elf when linking the pr22836 testcase. PR 24596 bfd/ * linker.c (_bfd_generic_link_output_symbols): Heed BSF_KEEP. ld/ * emultempl/genelf.em (gld${EMULATION_NAME}_after_open): Set BFS_KEEP on group signature symbol.
2019-05-24aarch64: handle STO_AARCH64_VARIANT_PCS in bfdSzabolcs Nagy1-0/+8
Propagate STO_AARCH64_VARIANT_PCS st_other attribute to the output and add DT_AARCH64_VARIANT_PCS dynamic tag if necessary. Mismatching attributes are not diagnosed. bfd/ChangeLog: * elfnn-aarch64.c (elfNN_aarch64_merge_symbol_attribute): New function. (struct elf_aarch64_link_hash_table): Add variant_pcs member. (elfNN_aarch64_allocate_dynrelocs): Update variant_pcs. (elfNN_aarch64_size_dynamic_sections): Add DT_AARCH64_VARIANT_PCS. (elf_backend_merge_symbol_attribute): Define. ld/ChangeLog: * testsuite/ld-aarch64/aarch64-elf.exp: Add new tests. * testsuite/ld-aarch64/variant_pcs-1.s: New asm for tests. * testsuite/ld-aarch64/variant_pcs-2.s: New asm for tests. * testsuite/ld-aarch64/variant_pcs-now.d: New test. * testsuite/ld-aarch64/variant_pcs-r.d: New test. * testsuite/ld-aarch64/variant_pcs-shared.d: New test. * testsuite/ld-aarch64/variant_pcs.ld: New linker script for tests.
2019-05-24Regen POTFILES for bpfAlan Modra1-0/+4
bfd/ * po/SRC-POTFILES.in: Regenerate. gas/ * po/POTFILES.in: Regenerate. ld/ * po/BLD-POTFILES.in: Regenerate. opcodes/ * po/POTFILES.in: Regenerate.
2019-05-24PowerPC notoc linkage stubsAlan Modra1-0/+15
Use pcrel addressing instructions in linkage stubs. bfd/ * elf64-ppc.c: Comment on powerxx _notoc stub variants. (LI_R11_0, LIS_R11, ORI_R11_R11_0, SLDI_R11_R11_34): Define. (PADDI_R12_PC, PLD_R12_PC, D34, HA34): Define. (struct ppc_link_hash_table): Add powerxx_stubs. (ppc64_elf_check_relocs): Set powerxx_stubs. (build_powerxx_offset, size_powerxx_offset), (num_relocs_for_powerxx_offset), (emit_relocs_for_powerxx_offset): New functions. (plt_stub_size): Size powerxx stubs. (ppc_build_one_stub): Emit powerxx stubs. (ppc_size_one_stub): Size powerxx stubs. Omit .eh_frame for powerxx stubs. ld/ * testsuite/ld-powerpc/notoc2.d, * testsuite/ld-powerpc/notoc2.s: New test. * testsuite/ld-powerpc/powerpc.exp: Run it.
2019-05-24PowerPC GOT_PCREL34 optimisationAlan Modra1-0/+9
bfd/ * elf64-ppc.c (ppc64_elf_check_relocs): Set has_gotrel for R_PPC64_GOT_PCREL34. (xlate_pcrel_opt): New function. (ppc64_elf_edit_toc): Handle R_PPC64_GOT_PCREL34. (ppc64_elf_relocate_section): Edit GOT indirect to GOT relative for R_PPC64_GOT_PCREL34. Implement R_PPC64_PCREL_OPT optimisation. ld/ * testsuite/ld-powerpc/pcrelopt.s, * testsuite/ld-powerpc/pcrelopt.d, * testsuite/ld-powerpc/pcrelopt.sec: New test. * testsuite/ld-powerpc/powerpc.exp: Run it.
2019-05-24PowerPC relocations for prefix insnsAlan Modra1-0/+32
include/ * elf/ppc64.h (R_PPC64_PLTSEQ_NOTOC, R_PPC64_PLTCALL_NOTOC), (R_PPC64_PCREL_OPT, R_PPC64_D34, R_PPC64_D34_LO, R_PPC64_D34_HI30), (R_PPC64_D34_HA30, R_PPC64_PCREL34, R_PPC64_GOT_PCREL34), (R_PPC64_PLT_PCREL34, R_PPC64_PLT_PCREL34_NOTOC), (R_PPC64_ADDR16_HIGHER34, R_PPC64_ADDR16_HIGHERA34), (R_PPC64_ADDR16_HIGHEST34, R_PPC64_ADDR16_HIGHESTA34), (R_PPC64_REL16_HIGHER34, R_PPC64_REL16_HIGHERA34), (R_PPC64_REL16_HIGHEST34, R_PPC64_REL16_HIGHESTA34), (R_PPC64_D28, R_PPC64_PCREL28): Define. bfd/ * reloc.c (BFD_RELOC_PPC64_D34, BFD_RELOC_PPC64_D34_LO), (BFD_RELOC_PPC64_D34_HI30, BFD_RELOC_PPC64_D34_HA30), (BFD_RELOC_PPC64_PCREL34, BFD_RELOC_PPC64_GOT_PCREL34), (BFD_RELOC_PPC64_PLT_PCREL34), (BFD_RELOC_PPC64_ADDR16_HIGHER34, BFD_RELOC_PPC64_ADDR16_HIGHERA34), (BFD_RELOC_PPC64_ADDR16_HIGHEST34, BFD_RELOC_PPC64_ADDR16_HIGHESTA34), (BFD_RELOC_PPC64_REL16_HIGHER34, BFD_RELOC_PPC64_REL16_HIGHERA34), (BFD_RELOC_PPC64_REL16_HIGHEST34, BFD_RELOC_PPC64_REL16_HIGHESTA34), (BFD_RELOC_PPC64_D28, BFD_RELOC_PPC64_PCREL28): New reloc enums. * elf64-ppc.c (PNOP): Define. (ppc64_elf_howto_raw): Add reloc howtos for new relocations. (ppc64_elf_reloc_type_lookup): Translate new bfd reloc numbers. (ppc64_elf_ha_reloc): Adjust addend for highera34 and highesta34 relocs. (ppc64_elf_prefix_reloc): New function. (struct ppc_link_hash_table): Add notoc_plt. (is_branch_reloc): Add R_PPC64_PLTCALL_NOTOC. (is_plt_seq_reloc): Add R_PPC64_PLT_PCREL34, R_PPC64_PLT_PCREL34_NOTOC, and R_PPC64_PLTSEQ_NOTOC. (ppc64_elf_check_relocs): Handle pcrel got and plt relocs. Set has_pltcall for section on seeing R_PPC64_PLTCALL_NOTOC. Handle possible need for dynamic relocs on non-pcrel powerxx relocs. (dec_dynrel_count): Handle non-pcrel powerxx relocs. (ppc64_elf_inline_plt): Handle R_PPC64_PLTCALL_NOTOC. (toc_adjusting_stub_needed): Likewise. (ppc64_elf_tls_optimize): Handle R_PPC64_PLTSEQ_NOTOC. (ppc64_elf_relocate_section): Handle new powerxx relocs. * bfd-in2.h: Regenerate. * libbfd.h: Regenerate. gas/ * config/tc-ppc.c (ppc_elf_suffix): Support @pcrel, @got@pcrel, @plt@pcrel, @higher34, @highera34, @highest34, and @highesta34. (fixup_size): Handle new powerxx relocs. (md_assemble): Warn for @pcrel on non-prefix insns. Accept @l, @h and @ha on prefix insns, and infer reloc without any @ suffix. Translate powerxx relocs to suit DQ and DS field instructions. Include operand tests as well as opcode test to translate BFD_RELOC_HI16_S to BFD_RELOC_PPC_16DX_HA. (ppc_fix_adjustable): Return false for pcrel GOT and PLT relocs. (md_apply_fix): Handle new powerxx relocs. * config/tc-ppc.h (TC_FORCE_RELOCATION_SUB_LOCAL): Accept BFD_RELOC_PPC64_ADDR16_HIGHER34, BFD_RELOC_PPC64_ADDR16_HIGHERA34, BFD_RELOC_PPC64_ADDR16_HIGHEST34, BFD_RELOC_PPC64_ADDR16_HIGHESTA34, BFD_RELOC_PPC64_D34, and BFD_RELOC_PPC64_D28. * testsuite/gas/ppc/prefix-reloc.d, * testsuite/gas/ppc/prefix-reloc.s: New test. * testsuite/gas/ppc/ppc.exp: Run it.
2019-05-23bfd: fix build with --enable-targets=all in 32-bit hostsJose E. Marchesi1-1/+7
This patch avoids for bpf_elf64_le_vec to be referenced in targmatch.h when building a BFD without BFD64, resulting in an undefined symbol. This was a regression introduced along with the BPF target. bfd/ChangeLog: 2019-05-23 Jose E. Marchesi <jose.marchesi@oracle.com> * config.bfd (targ_cpu): Process bpf-*-none only if BFD64. * configure.ac: Set target_size=64 for bpf_elf64_le_vec and bpf_elf64_be_vec. * configure: Regenerate.
2019-05-23bfd: add support for eBPFJose E. Marchesi1-0/+20
This patch adds support to BFD for elf64-bpf, in both little-endian and big-endian variants. bfd/ChangeLog: 2019-05-23 Jose E. Marchesi <jose.marchesi@oracle.com> * configure.ac: Add bpf_elf64_le_vec and bpf_elf64_be_vec. * configure: Regenerated. * Makefile.am (ALL_MACHINES): Add cpu-bpf.lo. (ALL_MACHINES_CFILES): Add cpu-bpf.c. (BFD64_BACKENDS): Add elf64-bpf.lo. (BFD64_BACKENDS_CFILES): Add elf64-bpf.c. * Makefile.in (SOURCE_HFILES): Regenerate. * config.bfd (targ_cpu): Handle bpf-*-* targets. * cpu-bpf.c: New file. * elf64-bpf.c: Likewise. * targets.c (_bfd_target_vector): Add bpf_elf64_be_vec and bpf_elf64_le_vec. * archures.c: Define architecture bfd_arch_bpf and machine bfd_arch_bpf. * reloc.c: Define BFD relocations used by the BPF target. * bfd-in2.h: Regenerated. * libbfd.h: Likewise.
2019-05-22ARM STM32L4XX erratum test failure with MALLOC_PERTURB_Alan Modra1-0/+5
* elf32-arm.c (arm_allocate_glue_section_space): Clear section contents.
2019-05-22vms-alpha gas segfaultAlan Modra1-0/+5
* vms-alpha.c (_bfd_vms_write_etir): Don't attempt further processing on "size error in section".
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