[Bug target/38239] [4.9, 5, 6 regression] The function mcount in gmon.o changes register ecx

[cvs-commit at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=38239

--- Comment #10 from GCC Commits <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Rainer Orth <ro@gcc.gnu.org>:

https://gcc.gnu.org/g:8ceb5e4a6020d16a251c14efe5b7d2b3b88dfec9

commit r17-1566-g8ceb5e4a6020d16a251c14efe5b7d2b3b88dfec9
Author: Rainer Orth <ro@CeBiTec.Uni-Bielefeld.DE>
Date:   Mon Jun 15 14:18:59 2026 +0200

    libgcc: Fix _mcount on 32-bit Solaris/x86 [PR38239]

    Profiling on 32-bit Solaris/x86 has been broken since

    Save call-clobbered registers in _mcount on 32-bit Solaris/x86 (PR
target/38239)
    https://gcc.gnu.org/pipermail/gcc-patches/2016-March/444175.html

    This was only recently noticed when setting up a Solaris/i386 binutils
    buildbot.

    Since internal_mcount is a regular function on Solaris, the selfpc and
    frompcindex args need to pushed to the stack.  Besides, the patch fixes
    a couple of warnings in gmon.c

    Bootstrapped withoug regressions on i386-pc-solaris2.11.  With this
    patch, the binutils gprof tests PASS.

    2026-06-12  Rainer Orth  <ro@CeBiTec.Uni-Bielefeld.DE>

            libgcc:
            PR target/38239
            * config/sol2/gmon.c [__i386__] (_mcount): Pass selfpc, frompc to
            internal_mcount.
            (internal_mcount): Remove already_setup.
            Remove obsolete comment.
            (moncontrol): Disable profil(2) deprecation warning.