On Fri, 2023-12-01 at 18:01 +0800, Xi Ruoyao wrote:
> On Fri, 2023-12-01 at 17:55 +0800, mengqinggang wrote:
> > Generate la.tls.desc macro instruction for TLS descriptors model.
> >
> > la.tls.desc expand to
> > pcalau12i $a0, %desc_pc_hi20(a)
> > ld.d $a1, $a0, %desc_ld_pc_lo12(a)
> > addi.d $a0, $a0, %desc_add_pc_lo12(a)
> > jirl $ra, $a1, %desc_call(a)
> >
> > The default is TLS descriptors, but can be configure with
> > -mtls-dialect={desc,trad}.
>
> No, the default should be trad to be compatible with old Glibc and
> Binutils.
>
> Or you can check the value of --with-glibc-version=M.N and the GAS
> feature when GCC is configured to decide the default.
And GCC is in stage 3 now. To me this change is significant enough to
be deferred into GCC 15 stage 1.
--
Xi Ruoyao <xry...@xry111.site>
School of Aerospace Science and Technology, Xidian University
