Re: [Valgrind-developers] Re: basic block chaining

[Nicholas N. <nj...@ca...>]

Hi,

I can't add a lot to this discussion, but I have been reading about
Dynamo...

On Sat, 16 Nov 2002, Julian Seward wrote:

> - how to cleanly deal with jumps to unknown addresses, which always require
>   a lookup

Dynamo has some kind of table for these.

> Finally -- and this is the last part of the trick -- whenever we want to
> move or discard any translations, we first unchain *all* of them.

I think Dynamo actually flushes the entire code cache in this situation.
But it doesn't have LRU eviction, and their code cache seems to be a lot
smaller.  So maybe that's not relevant.

Also, w.r.t. indirect jumps, I think Dynamo encodes a lot of them as
direct jumps and then checks before making the jump that the direct jump
is to the right place.  This somehow turns out as a win...

N