[Libre-soc-dev] LD/ST Elwidth Overrides

[lkcl]

On September 1, 2021 6:41:27 PM UTC, Jacob Lifshay <programmerjake at gmail.com> wrote:

>so, the reserved combination is signed, and everything else is
>unsigned?

(trim!! please! :)

yes, or, i realised (see updated page) the bit marked
"reserved" can *be* the signed EA bit.  bit 2

https://libre-soc.org/openpower/sv/ldst/

bit 2 = 1    signed EA
bit 2 = 0    unsigned EA.

cannot be combined with other modes (Bits 0:1 != 0b00) but that's ok.  defaults to unsigned.

l.