Hi all,
I was wondering if the following would be *possible* to do (but not
necessarily easy or the most elegant solution):
1. Fork the open source OpenJDK HotSpot Java Virtual Machine code
(written in C). Refactor its code to automatically look at a particular
memory address to load an executable JAR.
2. Compile that forked HotSpot VM code along with RIOT-OS and generate
an executable for a given platform (say 32-bit ARM)
3. Flash the executable to the ARM chip
4. Flash a JAR to some ROM that is memory addressable from that chip
5. ...
6. Profit.
The intention here is that when the chip powers up, the RIOT-OS app
(again a forked HotSpot JVM) loads an executable JAR from a specific
place in memory. Boom: you're running Java on a RTOS.
I understand there are various projects out there attempting to run a
JVM on an embedded tech (Java Card, etc.). But to my knowledge, none of
these projects leverage the above proposed technique. And the reason for
that is either:
1. I'm overlooking something obvious that makes this approach a
non-starter; or
2. No one's ever tried this before
I'm willing to bet that its the former reason and not the latter. But in
that case, I'd be interested in what the things are that I'm overlooking!
Thanks for any-and-all-help!
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