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[Bug gas/28230] .tfloat change breaks existing assembly codes


From: cvs-commit at gcc dot gnu.org
Subject: [Bug gas/28230] .tfloat change breaks existing assembly codes
Date: Mon, 16 Aug 2021 21:50:43 +0000

https://sourceware.org/bugzilla/show_bug.cgi?id=28230

--- Comment #3 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot 
gnu.org> ---
The master branch has been updated by H.J. Lu <hjl@sourceware.org>:

https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=ff01bb6c2321680660979fb9a4ab027348ea94ed

commit ff01bb6c2321680660979fb9a4ab027348ea94ed
Author: H.J. Lu <hjl.tools@gmail.com>
Date:   Sun Aug 15 13:17:41 2021 -0700

    x86: Don't pad .tfloat directive output

    .tfloat output should always be 10 bytes without padding, independent
    of psABIs.  In glibc, x86 assembly codes expect 10-byte .tfloat output.
    This also reduces .ds.x output and .tfloat output with hex input from
    12 bytes to 10 bytes to match .tfloat output.

            PR gas/28230
            * NEWS: Mention changes of .ds.x output and .tfloat output with
            hex input.
            * config/tc-i386.c (x86_tfloat_pad): Removed.
            * config/tc-i386.h (X_PRECISION_PAD): Changed to 0.
            (x86_tfloat_pad): Removed.
            * testsuite/gas/i386/fp.s: If NO_TFLOAT_PADDING isn't defined,
            add explicit paddings after .tfloat, .ds.x, .dc.x and .dcb.x
            directives.
            * testsuite/gas/i386/i386.exp (ASFLAGS): Append
            "--defsym NO_TFLOAT_PADDING=1" when running the fp test.

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