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2018-11-06Automatic date update in version.inGDB Administrator1-1/+1
2018-11-05Automatic date update in version.inGDB Administrator1-1/+1
2018-11-04Automatic date update in version.inGDB Administrator1-1/+1
2018-11-03Automatic date update in version.inGDB Administrator1-1/+1
2018-11-02PR23850, strip should not discard/move .rela.plt in executableAlan Modra2-8/+17
strip/objcopy can't deal with alloc reloc sections, not .rela.dyn or .rela.plt in a dynamic executable, or .rela.plt/.rela.iplt in a static executable. So, don't have BFD treat them as side-channel data associated with the section they are relocating. PR 23850 * elf.c (bfd_section_from_shdr): Treat SHF_ALLOC SHT_REL* sections in an executable or shared library as normal sections.
2018-11-02Automatic date update in version.inGDB Administrator1-1/+1
2018-11-01Automatic date update in version.inGDB Administrator1-1/+1
2018-10-31Don't create got section while processing TLS Local Exec relocations.Renlin Li2-3/+5
For Local Exec TLS model, the offset of the variable from the thread pointer can be computed at static link time. This doesn't require GOT indirection. The initial change is a bad fix for a problem during TLS GD -> LE relaxation. The proper fix is to check whether _GLOBAL_OFFSET_TABLE_ is referenced, create got section if yes. And the fix is already in the repository. bfd/ 2018-10-31 Renlin Li <renlin.li@arm.com> * elfnn-aarch64.c (elfNN_aarch64_check_relocs): Don't create got section for Local Exec TLS model.
2018-10-31Automatic date update in version.inGDB Administrator1-1/+1
2018-10-30Automatic date update in version.inGDB Administrator1-1/+1
2018-10-29Automatic date update in version.inGDB Administrator1-1/+1
2018-10-28Automatic date update in version.inGDB Administrator1-1/+1
2018-10-27Automatic date update in version.inGDB Administrator1-1/+1
2018-10-26Automatic date update in version.inGDB Administrator1-1/+1
2018-10-24ELF: Hide symbols defined in discarded input sectionsH.J. Lu2-2/+16
When assigning symbol version, we should hide debug symbols defined in discarded sections from IR objects so that they can be removed later. bfd/ PR ld/23818 * elflink.c (_bfd_elf_link_assign_sym_version): Hide symbols defined in discarded input sections. ld/ PR ld/23818 * testsuite/ld-plugin/lto.exp: Run PR ld/23818 test. * testsuite/ld-plugin/pr23818.d: New file. * testsuite/ld-plugin/pr23818.t: Likewise. * testsuite/ld-plugin/pr23818a.c: Likewise. * testsuite/ld-plugin/pr23818b.c: Likewise.
2018-10-25Automatic date update in version.inGDB Administrator1-1/+1
2018-10-24cmse_scan segfaultAlan Modra2-1/+7
elf_sym_hashes for as-needed libs will be zeroed if the library is found to be not needed. More than that, the local symbols for such a library should not be considered by cmse_scan. * elf32-arm.c (elf32_arm_size_stubs): Ignore as-needed libs that were not needed.
2018-10-24Automatic date update in version.inGDB Administrator1-1/+1
2018-10-23S12Z: New 32 bit Reloc.John Darrington1-0/+23
Third party tools produce 32 bit relocs at index 6 with strange properties. This change moves the existing 32 bit reloc (R_S12Z_EXT32) to index 7 and introduces a new one (R_S12Z_CW32) at index 6 to try to support code generated by these tools. * bfd/elf32-s12z.c (elf_s12z_howto_table) [R_S12Z_CW32]: New member. * binutils/readelf.c (is_32bit_abs_reloc): Reloc type 7 is also 32 bit. * include/elf/s12z.h (elf_s12z_reloc_tpe) [RELOC_NUMBER (R_S12Z_CW32)]: New enum.
2018-10-23PR23806, NULL pointer dereference in merge_stringsAlan Modra2-4/+17
PR 23806 * merge.c (_bfd_add_merge_section): Don't attempt to merge sections with ridiculously large alignments.
2018-10-23PR23805, NULL pointer dereference in elf_link_input_bfdAlan Modra2-6/+21
PR 23805 * elflink.c (elf_link_input_bfd): Don't segfault on finding STT_TLS symbols without any TLS sections. Instead, change the symbol type to STT_NOTYPE.
2018-10-23PR23804, buffer overflow in sec_merge_hash_lookupAlan Modra2-0/+9
PR 23804 * merge.c (_bfd_add_merge_section): Don't attempt to merge sections where size is not a multiple of entsize.
2018-10-23Automatic date update in version.inGDB Administrator1-1/+1
2018-10-22Automatic date update in version.inGDB Administrator1-1/+1
2018-10-21Automatic date update in version.inGDB Administrator1-1/+1
2018-10-20PR23788, objcopy: failed to find link sectionAlan Modra2-9/+15
Symbol tables can change when a number of objcopy options are used. I figure string tables are similarly changeable. PR 23788 * elf.c (section_match): Don't require a size match for SHT_SYMTAB or SHT_STRTAB.
2018-10-20Automatic date update in version.inGDB Administrator1-1/+1
2018-10-19Automatic date update in version.inGDB Administrator1-1/+1
2018-10-18Automatic date update in version.inGDB Administrator1-1/+1
2018-10-17PR23653, ld SIGSEGVs when attempts to link sparc object with x86_64 libraryAlan Modra2-0/+7
This patch improves dynobj selection. This allows the testcase in the PR to proceed further before segfaulting due to other bugs in the sparc backend. ../ld/ld-new --eh-frame-hdr -m elf_x86_64 -shared -o bug.so.5 bug.o ./libc.so.6 ./crtendS.o ../ld/ld-new: sparc architecture of input file `bug.o' is incompatible with i386:x86-64 output ../ld/ld-new: bug.o: in function `a': bug.c:(.text+0x4): undefined reference to `_GLOBAL_OFFSET_TABLE_' ../ld/ld-new: bug.c:(.text+0x8): undefined reference to `_GLOBAL_OFFSET_TABLE_' Segmentation fault PR 23653 * elflink.c (_bfd_elf_link_create_dynstrtab): Match elf_object_id too when choosing dynobj.
2018-10-17Automatic date update in version.inGDB Administrator1-1/+1
2018-10-16Simplify PR23110 PE_DEBUG_DATA size checksAlan Modra2-12/+7
The negative size check can be rolled into the "exceeds space left in section" check if that is done using an unsigned comparison. We know that "addr - section->vma" is never larger than section->size since the section is found by find_section_by_vma. * peXXigen.c (_bfd_XX_bfd_copy_private_bfd_data_common): Simplify PE_DEBUG_DATA size checks.
2018-10-16PR23781, _bfd_pe_bfd_copy_private_bfd_data_common memory leakAlan Modra2-0/+10
PR 23781 * peXXigen.c (_bfd_XX_bfd_copy_private_bfd_data_common): Free data before returning.
2018-10-16Automatic date update in version.inGDB Administrator1-1/+1
2018-10-16Re: BFD_INIT_MAGICAlan Modra3-3/+9
I should know better than to introduce the first use of size_t in bfd.h. PR 23534 * init.c (bfd_init): Return an unsigned int. bfd-in2.h: Regenerate.
2018-10-15BFD_INIT_MAGICAlan Modra3-3/+21
This patch performs a run-time test that a shared libbfd.so has been compiled with the same size bfd_vma as that of apps using the library. On a 32-bit host it is easily possible to have one libbfd.so compiled to support 64-bit targets (or configured with --enable-64-bit-bfd) while another only supports 32-bit targets. The two libraries will have differently sized bfd_vma types, and if the wrong one is loaded all sorts of weird behaviour might be seen. bfd/ PR 23534 * init.c (BFD_INIT_MAGIC): Define. (bfd_init): Return BFD_INIT_MAGIC. bfd-in2.h: Regenerate. binutils/ PR 23534 * addr2line.c (main): Exit with fatal error if bfd_init returns an unexpected value. * ar.c (main): Likewise. * dlltool.c (identify_dll_for_implib): Likewise. * nm.c (main): Likewise. * objcopy.c (main): Likewise. * objdump.c (main): Likewise. * size.c (main): Likewise. * strings.c (main): Likewise. * windmc.c (main): Likewise. * windres.c (main): Likewise. gas/ PR 23534 * as.c (main): Exit with fatal error if bfd_init returns an unexpected value. ld/ PR 23534 * ldmain.c (main): Exit with fatal error if bfd_init returns an unexpected value.
2018-10-15Automatic date update in version.inGDB Administrator1-1/+1
2018-10-14Automatic date update in version.inGDB Administrator1-1/+1
2018-10-13_bfd_clear_contents bounds checkingAlan Modra14-23/+50
This PR shows a fuzzed binary triggering a segfault via a bad relocation in .debug_line. It turns out that unlike normal relocations applied to a section, the linker applies those with symbols from discarded sections via _bfd_clear_contents without checking that the relocation is within the section bounds. The same thing now happens when reading debug sections since commit a4cd947aca23, the PR23425 fix. PR 23770 PR 23425 * reloc.c (_bfd_clear_contents): Replace "location" param with "buf" and "off". Bounds check "off". Return status. * cofflink.c (_bfd_coff_generic_relocate_section): Update _bfd_clear_contents call. * elf-bfd.h (RELOC_AGAINST_DISCARDED_SECTION): Likewise. * elf32-arc.c (elf_arc_relocate_section): Likewise. * elf32-i386.c (elf_i386_relocate_section): Likewise. * elf32-metag.c (metag_final_link_relocate): Likewise. * elf32-nds32.c (nds32_elf_get_relocated_section_contents): Likewise. * elf32-ppc.c (ppc_elf_relocate_section): Likewise. * elf32-visium.c (visium_elf_relocate_section): Likewise. * elf64-ppc.c (ppc64_elf_relocate_section): Likewise. * elf64-x86-64.c *(elf_x86_64_relocate_section): Likewise. * libbfd-in.h (_bfd_clear_contents): Update prototype. * libbfd.h: Regenerate.
2018-10-13Automatic date update in version.inGDB Administrator1-1/+1
2018-10-12Automatic date update in version.inGDB Administrator1-1/+1
2018-10-11Automatic date update in version.inGDB Administrator1-1/+1
2018-10-10Automatic date update in version.inGDB Administrator1-1/+1
2018-10-09Do not place symbols into a discarded .dynsymEgeyar Bagcioglu2-3/+9
Prevents getting an error about dynamic symbols in sections indexed 64K+ when .dynsym is discarded. * elflink.c (elf_link_output_extsym): Do not place symbols into a discarded .dynsym.
2018-10-09Automatic date update in version.inGDB Administrator1-1/+1
2018-10-08x86: Don't add GNU_PROPERTY_X86_FEATURE_2_NEEDED for -z separate-codeH.J. Lu2-45/+7
With commit 64029e93683a266c38d19789e780f3748bd6a188 Author: Alan Modra <amodra@gmail.com> Date: Fri Oct 5 11:40:54 2018 +0930 Separate header PT_LOAD for -z separate-code there is no need to add a GNU_PROPERTY_X86_ISA_1_USED note to force program header in in non-code PT_LOAD segment when -z separate-code is used. bfd/ PR ld/23428 * elfxx-x86.c (_bfd_x86_elf_link_setup_gnu_properties): Don't add GNU_PROPERTY_X86_FEATURE_2_NEEDED to force program header in non-code PT_LOAD segment. ld/ PR ld/23428 * testsuite/ld-i386/property-x86-4a.d: Updated. * testsuite/ld-x86-64/property-x86-4a-x32.d: Likewise. * testsuite/ld-x86-64/property-x86-4a.d: Likewise.
2018-10-08Separate header PT_LOAD for -z separate-codeAlan Modra3-73/+125
This patch, along with previous patches in the series, supports putting the ELF file header and program headers in a PT_LOAD without sections. Logic governing whether headers a loaded has changed a little: The primary reason to include headers is now the presence of SIZEOF_HEADERS in a linker script. However, to support scripts that may have reserved space for headers by hand, we continue to add headers whenever the first section address is past the end of headers modulo page size. include/ * bfdlink.h (struct bfd_link_info): Add load_phdrs field. bfd/ * elf-nacl.c (nacl_modify_segment_map): Cope with header PT_LOAD lacking sections. * elf.c (_bfd_elf_map_sections_to_segments): Assume file and program headers are required when info->load_phdrs. Reorganize code handling program headers. Generate a mapping without sections just for file and program headers when -z separate-code would indicate they should be on a different page to the first section. ld/ * ldexp.c (fold_name <SIZEOF_HEADERS>): Set link_info.load_phdrs. * testsuite/ld-elf/loadaddr1.d: Pass -z noseparate-code. * testsuite/ld-elf/loadaddr2.d: Likewise. * testsuite/ld-i386/vxworks2.sd: Adjust expected output. * testsuite/ld-powerpc/vxworks2.sd: Likewise. * testsuite/ld-elf/overlay.d: Remove spu xfail. * testsuite/ld-spu/ovl.lnk: Don't use SIZEOF_HEADERS. * testsuite/ld-tic6x/dsbt-be.ld: Likewise. * testsuite/ld-tic6x/dsbt-inrange.ld: Likewise. * testsuite/ld-tic6x/dsbt-overflow.ld: Likewise. * testsuite/ld-tic6x/dsbt.ld: Likewise.
2018-10-08Use p_vaddr_offset to set p_vaddr on segments without sectionsAlan Modra2-10/+22
p_vaddr is currently set from the first section vma if a segment has sections, and to zero if a segment has no sections. This means we lose p_vaddr when objcopy'ing executables if a segment without sections has a non-zero p_vaddr. This patch saves p_vaddr to p_vaddr_offset, and to make the use of p_vaddr_offset consistent, inverts the sign. (It's now added to section vma to get segment vaddr, and added to zero when there are no sections.) * elf.c (assign_file_positions_for_load_sections): Set p_vaddr from m->p_vaddr_offset for segments without sections. Invert sign of p_vaddr_offset. (rewrite_elf_program_header, copy_elf_program_header): Save old segment p_vaddr to p_vaddr_offset. Invert sign of p_vaddr_offset.
2018-10-08No PT_INTERP when .interp is zero sizeAlan Modra2-2/+9
Some targets don't set a default interpreter, resulting in an empty .interp section unless --dynamic-linker is passed to ld. A PT_INTERP without a path is rather useless. The testsuite change fixes a failure on microblaze-linux. bfd/ * elf.c (get_program_header_size): Don't count PT_INTERP if .interp is empty. (_bfd_elf_map_sections_to_segments): Don't create PT_INTERP if .interp is empty. ld/ * testsuite/ld-elf/pr22423.d: Pass --dynamic-linker to ld.
2018-10-08SPU overlay headersAlan Modra2-11/+32
Overlay PT_LOAD headers are moved early for reasons explained by comments in spu_elf_modify_segment_map. This patch fixes cases that shouldn't occur in sane SPU executables. * elf32-spu.c (spu_elf_modify_segment_map): Don't insert overlays before segment containing headers.
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