Re: SableJIT and ARM

Chris Pickett wrote:

> Philippe Laporte wrote:
>
>> Hi,
>>     I had issues with the JIT in another email and have yet to have 
>> received an answer about that...
>>
>> In the mean time, should I understand that only David knows his way 
>> around the JIT?
>
>
> I assume he is the most reliable source of info.  David is a full-time 
> developer now and I would guess his availability for new SableJIT work 
> is low.  However, his thesis is probably quite good documentation.  I 
> see that it is not yet on the web.
>
Suppose people want to get into SableJIT, surely someone should be 
available to answer some simple, preliminary questions...

>> The ports page does not claim ARM support for the JIT. Is that 
>> section of the site up to date?
>
>
> I'm not aware of any ports page describing SableJIT support besides 
> David's personal homepage at:
>
> http://www.sable.mcgill.ca/~dbelan2/
>
> I also do not know how simple an ARM port would be, although SableJIT 
> was designed to be retargetable.  You should check the availability of 
> ARM ports of other open source JITs (note the distinction between JIT 
> and VM) before committing to development of an ARM port for SableJIT. 
> For example, there was work on JikesRVM, and a solution like JCVM, 
> which was partially derived from SableVM, might also work, although I 
> suspect the presence of Soot itself makes JCVM too big.  I don't 
> really now about other systems like Kaffe and gcj but they are also 
> popular.

Well, at least Jazelle support would be rather easy...

I'm trying to get the Jato guy to take a look at SableJIT...

>
> Indeed, a summary of your comparison between the various open source 
> Java projects would probably be valuable to both yourself and others.


to come...:-) 

> I would actually suggest making a new article about Free / open source 
> Java and putting it in Wikipedia, complete with a comparison table.


great idea, will keep around.

>
> In general, Planet Classpath is a good starting place for more info on 
> other projects:
>
> http://planet.classpath.org/


Thanks again.

>
>> (I'll get back into the CVS soon, promised...)
>>
>> Sable on ARM, how does it do in general? I've been assuming that it 
>> was fine, but now looking again at the ports page I am getting 
>> confused. Would be nice to update that info (I wouldn't have to 
>> defend Sable so much...:-)
>
>
> See http://sablevm.org/wiki/Porting :
>
> Debian GNU/Linux
>   arm (direct works, IT needed for inlined, possibly some other inlined
>        specific issues)

yes, that's what I saw, and was wondering if this was up-to-date...

>
> You are free and encouraged to edit these Wiki pages.  For example, if 
> you want to create pages on SableJIT support.

will check it out