Were they emulating the x86 code in realtime, or pre-translating it to RISC-V in the way that Apple’s Rosetta 2 does for ARM? If the former, that is indeed impressive performance.
The original blog post (linked in the article) refers to this as a DynaRec, i.e. a dynamic recompiler. So it’s not exactly emulating, but nor is it the ahead-of-time recompilation that Rosetta 2 can do.
Were they emulating the x86 code in realtime, or pre-translating it to RISC-V in the way that Apple’s Rosetta 2 does for ARM? If the former, that is indeed impressive performance.
I don’t even care. The fact that we’re at a point where it runs means a whole bunch of "step one"s have been succefully taken.
Believe it or not, the article answers that question. The linked blog post from the devs has even more detail.
The original blog post (linked in the article) refers to this as a DynaRec, i.e. a dynamic recompiler. So it’s not exactly emulating, but nor is it the ahead-of-time recompilation that Rosetta 2 can do.