alt Hacker NewsMonsieur, on Windows this problem was solved with a large development effort, that's why it goes unnoticed on you. Note that CPU level instruction emulation is literally the easiest problem of emulation. (Why do you think you can't just go and execute Nintendo Switch binaries on your Mac M1? Both run ARM64.)
On Windows, this was is implemented as SysWOW64. WOW64 means Windows on Windows 64. It makes the userland emulation and pretends towards the process that everything around him (incl. drivers) are the 32-bit ones.
Source: Microsoft.
https://devblogs.microsoft.com/oldnewthing/20081222-00/?p=19...
One of the big things here is that Intel and ARM processors are backwards-compatible with 32-bit instructions, even if they are 64-bit processors. Apple Silicon on the other hand is not, which is why Apple completely dropped support before switching.