[Libre-soc-dev] Implicit setvli on blr?

Jacob Lifshay programmerjake at gmail.com
Mon May 24 06:07:42 BST 2021

On Sun, May 23, 2021, 22:01 Lauri Kasanen <cand at gmx.com> wrote:

> Hi,
> Something that came up, since the spec is "return to normal openpower
> mode on function return", is there an implicit setvli 1,1 on blr?

Afaik no. what would happen is, whenever executing a branch instruction,
the cpu would switch out of vblock and/or 16-bit decoding modes -- both of
which aren't going to be implemented for now, so nothing special happens.


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