this post was submitted on 06 Apr 2024
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Apple will start allowing emulators on the iOS App Store (9to5mac.com)
submitted 5 months ago by simple@lemm.ee to c/games@lemmy.world
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[–] WolfLink@lemmy.ml 1 points 4 months ago (1 children)

iOS natively supports JIT (by which we mean writable and executable memory) but Apple locks it down to only two use cases:

  1. The JavaScript engine in Safari
  2. Support for running a debugger

AltStore launches a debugger and connects it to your phone. Even though it’s not actually doing anything with a debugger, that’s enough to convince iOS to let your app use memory that’s both writable and executable (the key feature needed for JIT).

Without JIT you need to either resort to a slower form of emulation or do something creative.