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The scourge of x86 emulation

295 points · 100 comments · dagmx

  1. dagmx · · focus · HN ↗
    For reference , Fex is a translation framework for x86 to ARM much like Apple’s Rosetta2 and Microsoft’s Prism.

    Valve sponsor development as it’s also the way the new Steam Frame supports x86 games. It’s also being used (as a fork) in Crossover Beta to replace the use of Rosetta2.

    1. MiroslavPokorny · · focus · HN ↗
      Why doesnt Stream require their binaries to be compiled to some bytecode and transpiled during the install ?

      THen they wouldnt require any emulator for any new compiles.

      1. raverbashing · · focus · HN ↗
        They do

        x86 bytecode is bytecode

        1. ErroneousBosh · · focus · HN ↗
          I mean don't modern CPUs basically just run an x86_64 emulator on a RISC machine anyway? Like there's a layer between the microcode and the actual x86 instructions already.
          1. raverbashing · · focus · HN ↗
            I think it's more like a (kinda) VLIW machine but yes, pretty much
            1. MiroslavPokorny · · focus · HN ↗
              VLIW implies packets of different independent instructions that can be executed in parallel. I dont think this definition is ever true for the vast majority of x86 instructions.
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