[PATCH v4 1/2] MIPS: support mips*64 as CPU and gnuabi64 as ABI

[YunQiang Su]

Maciej, I saw you commits, and thanks for your work.

I still have another concern: we need a mips64r6 default triples to support.

Currently, in my previous patch, I add a "*" between mips and 64, aka
mips*64*el-linux-gnu(abi64).
If you have concern about some cases, maybe we can define it only for
   mips*32*-linux-gnu
   mips*64*-linux-gnuabin32
   mips*64*-linux-gnuabi64

Andreas K. Huettel <dilfridge@gentoo.org> 于2023年7月26日周三 01:48写道：
>
> > > Ohh you are right, while, does mips*-linux without ABI section really matter?
> > > I never hear about it is used for any real system.
> >
> >  You may not have heard about it, but someone has added these machine
> > specifiers for a reason and I reckon seeing at least `mipsisa64-*-*' ones
> > used at one point, maybe at MTI back in ~2005.  Here the "isa64" suffix
> > only specifies the ISA level (just as with "isa32", etc.) and not the ABI
> > such as with the "64" suffix.
>
> OK so right now (restricting myself to BE)
>
> * pure 32bit system in Gentoo uses plain mips-unknown-linux-gnu
> * anything 64bit (including n32) uses mips64-unknown-linux-gnu
>
> We, Gentoo, plan to move
> * n32 to mips64-unknown-linux-gnuabin32 and
> * n64 to mips64-unknown-linux-gnuabi64
>
> but so far this is just a (though already far-developed) plan.
>
> (Also, I'm not really the main Gentoo mips expert to talk to...)
>
> --
> Andreas K. Hüttel
> dilfridge@gentoo.org
> Gentoo Linux developer
> (council, toolchain, base-system, perl, libreoffice)