[PATCH v4 01/13] C-SKY: ABI related code

[Richard W.M. Jones]

On Fri, Sep 28, 2018 at 06:46:08PM -0700, Palmer Dabbelt wrote:
> On Wed, 12 Sep 2018 01:23:29 PDT (-0700), fweimer@redhat.com wrote:
> >On 09/12/2018 09:07 AM, Mao Han wrote:
> >>It seems used to call some pre-init function for libc, register transactional
> >>memory clone tables and invoke global constructors on C-SKY. Althrough I
> >>haven't found any constructors call by _init, I just tend to have _init and
> >>_fini as most other arch have these.
> >
> >The expectation is that for new glibc ports, GCC is tweaked to generate
> >the array variant of these constructs exclusively, like RISC-V did.
> >Then you won't need the function variant.
> 
> I think we're the only ones who do it this way, but it appears to
> work and saves us a few symbols so I see no reason not to do so.  In
> RISC-V land we're pretty aggressive about pruning old interfaces,
> but this one doesn't appear to have bitten us anywhere (or at least,
> has bitten us less than others :)).
> 
> The distro guys are probably in a better place to comment on this
> decision, though, as this is one of those things that will only crop
> up in real code.  I've added a few people who are more plugged in to
> these sorts of issues than I am.

I read the thread, which for reference starts here:

  https://sourceware.org/ml/libc-alpha/2018-09/threads.html#00126

As mafm said too, we'd need to know what to look for to answer this
question.  If you can suggest either a message that might have
appeared in the log files during compilation, or a test we can run
across all final binaries/libraries, then I'd be able to do that for
Fedora.

Rich.

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