harmony-dev mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Robin Garner" <robin.gar...@anu.edu.au>
Subject Re: half-baked idea? j2me
Date Tue, 01 Nov 2005 13:09:33 GMT
> On 11/1/05, Robin Garner <Robin.Garner@anu.edu.au> wrote:
>> Rodrigo Kumpera wrote:
>>
>> >AFAIK IKVM, sablevm and jamvm all run on portable devices.
>> >
>> >Developing a j2me jvm is not as easier as it seens, first, the
>> >footprint and execution performance must be really optimized, so
>> >expect a LOT of assembly coding.
>> >
>> >
>> Back to the language wars again :)  This does not necessarily follow.
>> Try googling for the 'squawk' VM - they had a poster at OOPSLA last
>> week.  This is a java-in-java virtual machine targetted at embedded
>> devices.  The core VM runs in 80KB of memory.  Device drivers are all
>> written in Java.
>>
>
> Robin,
>
> With a java-in-java VM even if you don't write directly in assembly
> you still need to generate machine code with java anyway, and that
> will look a lot like asm (JikesRVM baseline JITer for example). With
> C, for example, you can get away using just an interpreter.

My mistake, obviously.  When you said "performance must be really
optimized, so expect a LOT of assembly coding", I assumed you were saying
that large chunks of the VM would need to be written in assembler in order
to get adequate performance.

So what _was_ the point you were making ?

cheers


Mime
View raw message