Re: [PATCH V3 01/22] Documentation: LoongArch: Add basic documentations

Hi, Pavel,

On Fri, Sep 24, 2021 at 4:37 AM Pavel Machek [off-list ref] wrote:

Hi!

quoted

Add some basic documentations for LoongArch. LoongArch is a new RISC

... documentation ...

OK, thanks.

quoted

+wide in LA64. $r0 is always zero, and other registers has no special feature,

...have no special features...

OK, thanks.

quoted

+but we actually have an ABI register conversion as below.

convention?

Yes, should be convention here.

quoted

+``$r21``          ``$x``          Reserved            Unused
+``$r22``          ``$fp``         Frame pointer       Yes
+``$r23``-``$r31`` ``$s0``-``$s8`` Static registers    Yes
+================= =============== =================== ============

Not sure I know the term 'static registers' before.

"Static register" comes from the MIPS code "SAVE_STATIC", maybe it is
called "Saved register" in other places, but I think "static register"
is also OK.

Huacai

                                                                Pavel