[Vm-dev] Squeak Port for Android: Update

[Bert Freudenberg]

On 25.04.2011, at 13:13, David T. Lewis wrote:

> 
> 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 <andreas.raab at gmx.de> 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

... the point being that the generated sources are *identical* across platforms. Only the platform support code differs, all platforms share the same "VM".

- Bert -