On Mon, Sep 06, 2021 at 10:58:53AM +0200, Jakub Jelinek via Gcc-patches wrote:
> On Mon, Sep 06, 2021 at 08:49:27AM +0100, Iain Sandoe wrote:
> > > Ok. The *.ver changes are still needed (see above), but that can be done
> > > incrementally.
> >
> > I can commit the .ver change if that’s approved, sure - for the record I
> > haven’t checked
> > any targets other than Darwin and Linux.
>
> The following patch exports it for Linux from config/i386/*.ver where it
> IMNSHO belongs, aarch64 already exports some of those at GCC_11* and other
> targets might add them at completely different gcc versions.
>
> Tested on x86_64-linux, verified the right symbols are exported, ok for trunk?
Bootstrapped/regtested on x86_64-linux and i686-linux successfully, though
actually __divhc3 and __mulhc3 aren't exported, they aren't even compiled
into libgcc_s.so.1. Is that on purpose (large functions very unlikely being
used in most of the programs)? If yes, I'll drop the __divhc3/__mulhc3
lines. If not,
LIB2ADD_ST += $(addprefix $(srcdir)/config/i386/, $(libgcc2-hf-extras))
should be changed to
LIB2ADD += $(addprefix $(srcdir)/config/i386/, $(libgcc2-hf-extras))
(untested), or even the LIB2FUNCS_EXCLUDE dropped?
> 2021-09-06 Jakub Jelinek <ja...@redhat.com>
> Iain Sandoe <i...@sandoe.co.uk>
>
> * config/i386/libgcc-glibc.ver: Add %inherit GCC_12.0.0 GCC_7.0.0
> and export *hf* and *hc* functions at GCC_12.0.0.
>
> --- libgcc/config/i386/libgcc-glibc.ver.jj 2021-01-05 00:13:58.142298913
> +0100
> +++ libgcc/config/i386/libgcc-glibc.ver 2021-09-06 10:47:52.244726676
> +0200
> @@ -194,3 +194,23 @@ GCC_4.8.0 {
> __cpu_indicator_init
> }
> %endif
> +
> +%inherit GCC_12.0.0 GCC_7.0.0
> +GCC_12.0.0 {
> + __divhc3
> + __mulhc3
> + __eqhf2
> + __nehf2
> + __extendhfdf2
> + __extendhfsf2
> + __extendhftf2
> + __extendhfxf2
> + __fixhfti
> + __fixunshfti
> + __floattihf
> + __floatuntihf
> + __truncdfhf2
> + __truncsfhf2
> + __trunctfhf2
> + __truncxfhf2
> +}
Jakub
