• nave@lemmy.ca
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    7 months ago

    you only get JIT by paying for a special developer license or using exploits on very specific iOS versions.

    Actually Altstore has AltJIT which works on all iOS versions altstore supports but requires you to be connected to the same network as a computer running altstore.

    run a VM or something

    UTM (which is based on QEMU) is already available on iOS.

    • kadu@lemmy.world
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      7 months ago

      but requires you to be connected to the same network as a computer running altstore.

      So you mean iOS doesn’t natively support JIT for App Store apps and requires hacky workarounds?

      • WolfLink@lemmy.ml
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        7 months ago

        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.