[Bug gas/21700] powerpc-ibm-aix6.1.0.0 fails with unresolved symbols

[cvs-commit at gcc dot gnu.org]

https://sourceware.org/bugzilla/show_bug.cgi?id=21700

--- Comment #14 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot 
gnu.org> ---
The master branch has been updated by Nick Clifton <nickc@sourceware.org>:

https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=c5df7e442e6cdc9303b7373842370d6ee8f67ea5

commit c5df7e442e6cdc9303b7373842370d6ee8f67ea5
Author: Cl?ment Chigot <clement.chigot@atos.net>
Date:   Tue Apr 20 14:40:43 2021 +0100

    Rework the R_NEG support on both gas and ld for the PowerPC AIX targets, in
order to manage C++ exceptions built with GCC.

    bfd     PR binutils/21700
            * reloc.c (BFD_RELOC_PPC_NEG): New relocation.
            * bfd-in2.h: Regenerate.
            * libbfd.h: Regenerate.
            * coff-rs6000.c (_bfd_xcoff_reloc_type_lookup): Add
            BFD_RELOC_PPC_NEG handler.
            (xcoff_reloc_type_neg): Correctly substract addend.
            * coff64-rs6000.c (xcoff64_howto_table): Add R_NEG_32
            howto.
            (xcoff64_rtype2howto): Add handler for R_NEG_32.
            (xcoff64_reloc_type_lookup): Add BFD_RELOC_PPC_NEG handler.
            * xcofflink.c (xcoff_need_ldrel_p): Check output section
            for R_POS-like relocations. New argument added.
            (xcoff_mark): Adapt to new xcoff_need_ldrel_p argument.
            (xcoff_link_input_bfd): Likewise.

    gas     * config/tc-ppc.c (ppc_get_csect_to_adjust): New function.
            (ppc_fix_adjustable): Manage fx_subsy part.
            (tc_gen_reloc): Create second relocation when both
            fx_addsy and fx_subsy are provided.
            * config/tc-ppc.h (RELOC_EXPANSION_POSSIBLE): New define.
            (MAX_RELOC_EXPANSION): Likewise.
            (TC_FORCE_RELOCATION_SUB_SAME): Likewise
            (UNDEFINED_DIFFERENCE_OK): Likewise
            * testsuite/gas/all/gas.exp: Skip difference between two
            undefined symbols test.

    ld      * testsuite/ld-powerpc/aix52.exp: Add new test.
            * testsuite/ld-powerpc/aix-neg-reloc-32.d: New test.
            * testsuite/ld-powerpc/aix-neg-reloc-64.d: New test.
            * testsuite/ld-powerpc/aix-neg-reloc.ex: New test.
            * testsuite/ld-powerpc/aix-neg-reloc.s: New test.

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