Rosetta 2 is remarkably fast when compared to other x86-on-ARM emulators. I’ve spent a little time looking at how it works, out of idle curiosity, and found it to be quite unusual, so I figured I’d put together my notes. My understanding is a bit rough, and is mostly based on reading the ahead-of-time translated code, and making inferences about the runtime from that. Let me know if you have any corrections, or find any tricks I’ve missed. IDA Pro screenshot: side-by-side comparison of Rosetta 2...