Squeak Port for Android: Update

>
> Mariano,
>
> Mariano Peck wrote:
>
>> The fork of the adroid VM is from the Interpreter VM, isn't it ?
>
> Yes, as much as I can tell.
>
>> Have you ever consider or have in mind to adapt the Cog StackVM ?  I
>> remember John saying that this improved performance in the iPhone.
>
> This might be a direction for future work. But not a small thing, I expect.

>  
> On Wed, Apr 20, 2011 at 8:16 AM, Andreas Raab <[hidden email]> wrote:
>
> >
> > On 4/20/2011 0:37, Dimitry Golubovsky wrote:
> >
> >> Since I haven't seen the Slang sources (I have no idea where they are)
> >> of the Event VM, I cannot tell much.
> >>
> >
> > They are right here:
> >
> > http://squeakvm.org/win32/experimental/androidvm.zip
> >
> >
> But where is VMMaker? I mean...the mcz or something from VMMaker so that you
> can recreate the C sources ?

>
> On Sun, Apr 24, 2011 at 11:08:31PM +0200, Mariano Martinez Peck wrote:
>>
>> On Wed, Apr 20, 2011 at 8:16 AM, Andreas Raab <[hidden email]> wrote:
>>
>>>
>>> On 4/20/2011 0:37, Dimitry Golubovsky wrote:
>>>
>>>> Since I haven't seen the Slang sources (I have no idea where they are)
>>>> of the Event VM, I cannot tell much.
>>>>
>>>
>>> They are right here:
>>>
>>> http://squeakvm.org/win32/experimental/androidvm.zip
>>>
>>>
>> But where is VMMaker? I mean...the mcz or something from VMMaker so that you
>> can recreate the C sources ?
>
> I am not an Android developer, but I think I can point you to the
> answer.
>
> Andreas gives an overview of the the VM works on the Google
> source project <http://code.google.com/p/squeak-android-vm/>.
>
> If you unpack the sources (androidvm.zip) you will find an Eclipse
> project with some Java glue code for integrating the VM into the
> Android environment, and bunch of C code in the project/jni folder.
> This includes the interp.c file generated from VMMaker, which has
> this identification at the top of the file:
>
> /* Automatically generated from Squeak on 17 January 2010 5:57:19 pm
>   by VMMaker 3.11.8
> */
>
> The "VMMaker 3.11.8" tag gives an approximate idea of the VMMaker
> version, and if you look through the VMMaker archives on SqueakSource,
> you can see that this would have come from a VMMaker based on this
> version:
>
>  Name: VMMaker-dtl.147
>  Time: 1 November 2009, 10:41:36 pm
>  Ancestors: VMMaker-dtl.146
>
>  VMMaker 3.11.8
>  Reference Mantis 7407: BitBlt. Incorrect alpha values for several rules.
>  Add VMMaker-BitBlt-AlphaFixes-jmv-M7407.cs bitblt alpha fixes by Juan Vuletich
>
> So you can reasonably conclude that Andreas was using a standard
> VMMaker from this time period, possibly with some local changes
> but basically a generic VMMaker.
>
> As for the local changes, I would expect that they are the changes
> that Andreas posted here:
>  http://lists.squeakfoundation.org/pipermail/vm-dev/2009-November/003437.html
>
> So the fileout would be this attachment:
>  http://lists.squeakfoundation.org/pipermail/vm-dev/attachments/20091113/970e2f4e/EventVM.1.bin
>
> Andreas' posting here has the relevant links:
>  http://lists.squeakfoundation.org/pipermail/vm-dev/2011-April/007510.html
>
> So in conclusion, the VMMaker for the Android VM is "hiding" right
> where it has always been, in SqS/VMMaker :)
>
> I cannot say for certain, but my expectation is that you could
> use any version of VMMaker that you want (including the oscog branch)
> as long as you generate an interpreter with no Intel dependencies. So
> if you wanted to apply the event VM changes to a StackInterpreter, I
> can think of no reason that this would not work also.
>
> HTH,
> Dave