3 ms·

Rosetta 2 includes both ahead-of-time translation and run-time emulation. It can run x64 jit software for example.

• coldtea 6y ago
  The jit is run-time translation still - not run-time emulation.
  • dtech 6y ago
    Can you provide a definition that specifies the difference? The end result is identical: being able to run software compiled for foreign ISA.
    • coldtea 6y ago
      It doesn't emulate a whole CPU and has the simulated CPU run the code. It translates instructions directly to the different ISA.
  • saagarjha 6y ago
    That is literally how performant emulators work.
    • coldtea 6y ago
      At that level though, emulation/translation/simulation is blurred.
      • saagarjha 6y ago
        Somewhat, they're really not exclusive. You could say Rosetta is an x86 emulator that uses AOT binary translation and JIT compilation.