Thursday, June 27, 2002

Hello, world!

It's running! Those who have ever implemented a JVM know that running "Hello, World!" requires a very large percentage of the VM to be up and running, so I'm very happy to have reached this point.

If anyone wants to see the results for themselves, a zip file containing the executable and two dlls is available here.

The full project is available here.

There are still many things todo (in no particular order):

  • Implement jumping into and out of try blocks (run peverify on hello.exe to see what I mean ;-))
  • A few missing bytecodes need to be implemented
  • CLR exceptions need to be mapped to Java exceptions
  • Exceptions should retain their stacktraces even though they are thrown again
  • Many classpath native methods have to be implemented
  • Many JNI methods need to be implemented
  • Figure out how to deal with final fields (CLR initonly is not the same as Java's final. In Java a class is allowed to change a final field (although most JITs don't support that))
  • Figure out a way to make sure that generated types are finished in the proper order, to avoid deadlock. This is a major problem now, if I don't save the dynamic assembly before starting to execute the main method, the loading of classes deadlocks.
  • Many things I haven't even discovered yet ;-)
6/27/2002 12:39:22 PM (W. Europe Daylight Time, UTC+02:00)  #    Comments [0]
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I apologize for the lameness of this, but the comment spam was driving me nuts. In order to be able to post a comment, you need to answer a simple question. Hopefully this question is easy enough not to annoy serious commenters, but hard enough to keep the spammers away.

Anti-Spam Question: What method on java.lang.System returns an object's original hashcode (i.e. the one that would be returned by java.lang.Object.hashCode() if it wasn't overridden)? (case is significant)

Answer:  
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