[Bug ld/18176] Large file size due to padding for PT_GNU_RELRO segment

[cvs-commit at gcc dot gnu.org]

https://sourceware.org/bugzilla/show_bug.cgi?id=18176

--- Comment #4 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot 
gnu.org> ---
The master branch has been updated by Alan Modra <amodra@sourceware.org>:

https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=31b4d3a16f200bf04db8439a63b72bba7af4e1be

commit 31b4d3a16f200bf04db8439a63b72bba7af4e1be
Author: Alan Modra <amodra@gmail.com>
Date:   Thu Feb 3 08:57:47 2022 +1030

    PR28824, relro security issues, x86 keep COMMONPAGESIZE relro

    x86 treats MAXPAGESIZE as a memory optimisation parameter, actual
    hardware paging is always COMMPAGESIZE of 4k.  Use COMMONPAGESIZE for
    the end of the relro segment alignment.

    The previous patch regresses pr18176, increasing the testcase file
    size from 322208 to 2099872 bytes.  Fixing this on x86 will require
    introducing a gap after the end of the relro segment (of up to
    relropagesize-1 bytes).

            PR 28824
            PR 18176
            * ld.h (ld_config_type): Add relro_use_commonpagesize field.
            * ldexp.c (fold_segment_align): Set relropagesize depending on
            relro_use_commonpagesize.
            * emultempl/elf-x86.em (elf_x86_create_output_section_statements):
            Set relro_use_commonpagesize.
            * testsuite/ld-x86-64/pr18176.d: xfail.

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