Black screen about gc4ios

[jakeb072001]

I think it's something to do with permissions or the emulation core.
Whatever it is I hope it gets fixed soon.

[Nmzik]

Hmm...
Log:

Update Main Frame: OGL
Asking for window handle
2016-06-03 11:30:12.470 Dolphin[919:10193] Boot Started, waiting for run state
2016-06-03 11:30:12.471 Dolphin[919:10193] Core booted
shm_open failed: Operation not permitted
Warning: Failed to map 1 GB of memory space: Cannot allocate memory
Failed to map 1 GB of memory space: Cannot allocate memory
Memory Setup of size 100925440 starting at 0x0
mmap failed
Warning: MemoryMap_Setup: Failed finding a memory base.
MemoryMap_Setup: Failed finding a memory base.
2016-06-03 11:30:13.759 Dolphin[919:10193] Reloading
2016-06-03 11:30:14.760 Dolphin[919:10193] Reloading

[Nmzik]

FIXED
To be able to run on iOS 9 you need to change source code.
Change this
void* base = mmap(0, MemSize, PROT_READ | PROT_WRITE, MAP_ANON | MAP_PRIVATE, -1, 0);
to this
void* base = mmap(0, MemSize, PROT_READ | PROT_WRITE, MAP_ANON | MAP_PRIVATE | MAP_JIT, -1, 0);
in MemArena.cpp
Wow. Wii Games seems to be Working!
@WilliamLCobb Please update code

[jakeb072001]

Could you possibly send a compiled version with the fix?
I don't have a Mac.

[nfsvsgta]

Yeah

[Nmzik]

@jakeb072001 Sorry. I can't do that. You need to wait @WilliamLCobb to update deb in his repo

[jakeb072001]

Ok.

[nfsvsgta]

👍

[WilliamLCobb]

@Nmzik wait what? How did you get The JIT flag to work? That's the source of all of the JIT problems because apple disallows it

[nfsvsgta]

Is that a good thing. Something to celebrate?

[Nmzik]

@WilliamLCobb I'm sorry, what? "apple disallows it" in non-jailbroken device.

[Nmzik]

But i think u need to add check for iOS version :
if (ios9) then void* base = mmap(0, MemSize, PROT_READ | PROT_WRITE, MAP_ANON | MAP_PRIVATE | MAP_JIT, -1, 0);
i am not sure about iOS 8

[nfsvsgta]

What about iOS 8. It won't work on it?

[Nmzik]

Jit is working on iOS 9
Sample code :

uint8_t codetest[] = {0xE7,0x23,0x00,0xB9,0xE7,0x23,0x40,0xB9,0xC0,0x03,0x5F,0xD6};
void *mem = mmap(NULL, 1024, PROT_WRITE | PROT_EXEC, MAP_ANON | MAP_PRIVATE | MAP_JIT, -1, 0);
memcpy(mem, codetest, sizeof(codetest));
void (*func)() = (void(*)())mem;
func();

[jakeb072001]

Wait, so your telling me that the source of the JIT problem was just a single word?

[Nmzik]

You can enable/activate JIT in your code/program/app only if you have jailbroken device! You can't do it on non-jailbroken device (apple disallows it). So, basically, yes - its just a single word. But, again, i am not sure about iOS 8 at all as there was different exploit used to escalate privileges (Pangu Taig stuff...).

[jakeb072001]

Well I'm on iOS 9 and jailbroken so I'm happy!

[MaquinaDelMisterio]

@Nmzik Thanks for sharing that jit line.I need jailbreak, i can't load Paper Mario rom, it stay on black screen. And by the way, @jakeb072001 How is it running with jailbreak on iOS 9?

[jakeb072001]

@MaquinaDelMisterio I don't have the new version yet because I don't have a Mac.
I have to wait until the next update from @WilliamLCobb .
When I get the new update I will tell you.

[MaquinaDelMisterio]

@jakeb072001 I would like to help you, but my developer account its free, and i only can use the app on my device. And thanks, i would love to see how performace its doing with jit.

[WilliamLCobb]

But the kernel wasn't patched for 64-bit devices. You "shouldn't" be able to run that code. I'll try it

[WilliamLCobb]

And the blackscreen means the device was not able to allocate a 1GB block of continuous memory. I don't think this check is necessary though so I'll remove it

[nfsvsgta]

Ok so now what

[Nmzik]

It's actually runnable:)

[nfsvsgta]

Sorry if m disturbing but when will the cydia repo be updated? And will the black screen be fixed?

[Nmzik]

@WilliamLCobb You should try it.It will run! Make breakpoint to check

[WilliamLCobb]

@nfsvsgta probably tonight. This is an early alpha and I have a few other projects I have to spend time on too to pay the rent. Things should start to work better in the next few days. I'll let you know when I update it

@Nmzik I'll give it a shot right now. If this works JIT should work perfectly with very little effort

[WilliamLCobb]

Did you have to add any entitlements or did it just work?

[Nmzik]

It just work:)

[nfsvsgta]

Thanks

[WilliamLCobb]

@Nmzik Just tried and it doesn't work. Whats your iOS version and phone?

[Nmzik]

iOS 9.0.2 iPhone 5S. I am not joking. It's working

[nfsvsgta]

Thanks for that commit

[WilliamLCobb]

whoah it's working now... I don't know why, it shouldn't work. Even with a jailbreak pangu never patched the kernel

[WilliamLCobb]

So JIT is working... I'll update if I get a game to run

[Nmzik]

Good to hear it