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.
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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.
Believe it or not, the article answers that question. The linked blog post from the devs has even more detail.
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.