[fpc-pascal] Working Free Pascal android JNI example

Michael Van Canneyt michael at freepascal.org
Tue Dec 7 15:45:30 CET 2010

On Tue, 7 Dec 2010, Sven Barth wrote:

> Am 07.12.2010 12:12, schrieb Matt Emson:
>> On 07/12/2010 10:46, Felipe Monteiro de Carvalho wrote:
>>> Still not ideal, however.
>> Well, no. As Android targets any processor - not just ARM. Indeed, there
>> are Intel based versions. Native is bad, and only come in to existence
>> to compete with other platforms with purely native compilation - and
>> then purely to counteract criticisms on the performance of games and
>> multimedia apps. Davlik was created for a reason - compile once, run on
>> multiple targets. Would it not be a better solution to create a Dalvik
>> back-end? As I understand it, Dalvik is very, far from a traditional
>> stack based Java VM and closer to a traditional register based processor
>> in design. I know little about it, but the benefits of Android, as a
>> platform, are completely lost when one focuses on native compilation.
> I don't see it that problematic to create a Dalvik code generator (or a 
> normal Java or CIL one). The biggest problem is to create a suitable RTL and 
> to be able to use the classes that are provided by the VM.

In fact I think this is one of the more easy things.
The main problem seems to me that you need to support things like pointers,
which is something deeply embedded in Pascal.


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