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From: "mark at klomp dot org" <sourceware-bugzilla@sourceware.org>
To: elfutils-devel@sourceware.org
Subject: [Bug tools/28495] Add support for SHT_RELR to eu-readelf
Date: Tue, 29 Aug 2023 11:01:54 +0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=3D28495

Mark Wielaard <mark at klomp dot org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|ASSIGNED                    |RESOLVED
         Resolution|---                         |FIXED

--- Comment #6 from Mark Wielaard <mark at klomp dot org> ---
commit 39f2c500542f69c2f1a13fd0ae4eaa5778d2ed8d
Author: Mark Wielaard <mark@klomp.org>
Date:   Sun Jul 23 23:14:31 2023 +0200

    libelf, readelf, elflint: Add RELR support

    Handle RELR as defined here:
    https://groups.google.com/g/generic-abi/c/bX460iggiKg/m/YT2RrjpMAwAJ

    Introduce new ELF_T_RELR Elf_Type and handle it for SHT_RELR.  Check
    various properties in elflint.  Print RELR relocations in
    readelf. Just the entries with -U.  Just the addresses with -N. And
    addresses plus symbol/offsets by default.

    Also add a test to check that gelf.h works with the system elf.h.

            * libebl/eblsectiontypename.c (ebl_section_type_name): Add RELR
            to knownstype.
            * libelf/elf32_updatenull.c (updatenull_wrlock): Handle
            sh_entsize for SHT_RELR.
            * libelf/gelf.h (GElf_Relr): New typedef for Elf64_Relr.
            * libelf/gelf_fsize.c (__libelf_type_sizes): Add ELF_T_RELR.
            * libelf/gelf_xlate.c (__elf_xfctstom): Likewise.
            * libelf/gelf_xlate.h: Add RELR as FUNDAMENTAL.
            * libelf/libelf.h (Elf_Type): Add ELF_T_RELR. Add RELR
            defines/typedefs if undefined in system elf.h.
            * libelf/libelfP.h: Define ELF32_FSZ_RELR and ELF64_FSZ_RELR.
            * src/elflint.c (check_reloc_shdr): Check she_entsize for
            ELF_T_RELR.
            (check_relr): New function.
            (check_dynamic): Handle DT_RELR.
            (special_sections): Add SHT_RELR.
            (check_sections): Call check_relr.
            * src/readelf.c (print_relocs): Also accept a Dwfl_Module.
            (handle_relocs_relr): New function.
            (print_dwarf_addr): Make static and declare early.
            (process_elf_file): Pass dwflmod to print_relocs.
            (handle_dynamic): Handle DT_RELRSZ and DTRELRENT.
            * system-elf-gelf-test.c: New test.
            * Makefile.am (TESTS): Add system-elf-gelf-test.
            (check_PROGRAMS): Likewise.
            (system_elf_gelf_test_CPPFLAGS): New variable.
            (system_elf_gelf_test_LDADD): Likewise.

    https://sourceware.org/bugzilla/show_bug.cgi?id=3D28495

    Signed-off-by: Mark Wielaard <mark@klomp.org>

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