which is why there are no browsers other than Safari
Want that explicitly forbidden? Browsers don’t need jit to be fast enough
Comment on Apple will start allowing emulators on the iOS App Store
kadu@lemmy.world 7 months ago
Do we know if these emulators will support JIT? JIT has always been prohibited on iOS (which is why there are no browsers other than Safari - Firefox and Chrome on iOS are just a Safari WebView plus a crappy interface on top).
Even when sideloading emulators, you only get JIT by paying for a special developer license or using exploits on very specific iOS versions.
Without JIT, sure, go nuts emulating the NES… But forget about anything more demanding than a GameCube, or using this to run a VM or something.
Lojcs@lemm.ee 7 months ago
echo64@lemmy.world 7 months ago
Yes, op is a little confused.
- Browsers (were, still are in many regions) forbidden from using any engine other than the iOS provided webkit.
- Dynamic recompilation is not possible on iOS because of how iOS does code signing. This basically blocks the entire concept of executing instructions that weren’t part of the original signed code.
pivot_root@lemmy.world 7 months ago
The GameCube also needs a JIT for decent performance. On a phone, that will especially hurt to emulate the CPU in software.
nave@lemmy.ca 7 months ago
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.
kadu@lemmy.world 7 months ago
So you mean iOS doesn’t natively support JIT for App Store apps and require hacky workarounds?
WolfLink@lemmy.ml 6 months ago
iOS natively supports JIT (by which we mean writable and executable memory) but Apple locks it down to only two use cases:
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.
kadu@lemmy.world 6 months ago
nave@lemmy.ca 7 months ago
I was just pointing out that OPs list was incomplete. Also theoretically someone could include altjit in their app because the App Store guidelines don’t explicitly say you can’t.
tsonfeir@lemm.ee 7 months ago
Sadly jail breaking is required after iOS 11
nave@lemmy.ca 7 months ago
For what?
tsonfeir@lemm.ee 7 months ago
For for UTM