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

[Palmer Dabbelt]

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.