[Vm-dev] Alien on Spur and "el capitan"?

[Esteban Lorenzano]

> On 19 Oct 2015, at 20:01, Nicolas Cellier <nicolas.cellier.aka.nice at gmail.com> wrote:
> 
> I regularly sync (merge) with Eliot branch, but I'm a few months behind, not much time recently.
> Also, I upgraded Xcode to latest version but did not yet tried to compile the VM, so no premature promises...
> I'll try and have a look and will keep you informed…

thanks!


> 
> cheers
> 
> 2015-10-19 19:56 GMT+02:00 Esteban Lorenzano <estebanlm at gmail.com <mailto:estebanlm at gmail.com>>:
>  
> I don’t know about Eliot, but I cannot wait. 
> Without Alien, I have no FFI with callbacks.
> Without FFI with callbacks I have no replacement for NativeBoost. 
> Without NativeBoost I have not Athens (and OSWindow)
> And without those, Pharo cannot migrate to Spur. 
> 
> So if you have a working version (or partially working), please, share it. 
> 
> Esteban
> 
>> On 19 Oct 2015, at 19:48, Nicolas Cellier <nicolas.cellier.aka.nice at gmail.com <mailto:nicolas.cellier.aka.nice at gmail.com>> wrote:
>> 
>> I've changed many of these in my experimental branch when trying to remove lot of UB - but it's not up to date with latest Eliot .oscog versions...
>> 
>> I'd like we review some of these changes, but only if Eliot is ready, he has many things cooking already.
>> 
>> http://smalltalkhub.com/mc/nice/NiceVMExperiments/main <http://smalltalkhub.com/mc/nice/NiceVMExperiments/main>
>> 
>> 2015-10-19 18:31 GMT+02:00 Esteban Lorenzano <estebanlm at gmail.com <mailto:estebanlm at gmail.com>>:
>>  
>> Hi, 
>> 
>> Does anyone tested Alien on Spur and "El capitan"? specifically callbacks?
>> For me, a completely broken :(
>> 
>> 1) this structure (in maybeInlinePositive32BitIntegerFor: and others): 
>> 
>> 	(integerValue >= 0
>> 	 and: [objectMemory isIntegerValue: integerValue]) ifTrue:
>> 		[^objectMemory integerObjectOf: integerValue].
>> 
>> Does not works if “integer value” is an unsigned long, because compiler assumes it will always be true, then remove the if, then answers a wrong value. 
>> 
>> 2) assertCStackWellAligned always fail. No idea why because if does not says anything, just jmp back to the regular flow. 
>> 
>> 3) finally, ceCaptureCStackPointers also fails… this can be because (2) or because other reasons (it also jmps back so no clue) (method generateCaptureCStackPointers: clarifies is a hack, so I suppose it stopped to work). 
>> 
>> I guess solution of (1) is easy: argument number just has to be a sqLong instead an unsigned long. 
>> 
>> But for 2 and 3 I have no idea where to start.
>> 
>> Does anyone has an idea?
>> 
>> Esteban
>> 
>> 
>> 
> 
> 
> 

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