+3  A: 

not sure if that's what you want but haXe is opensource. haXe has also a library that can produce bytecode from haxe code.

Cristi Băluță  2009-08-02 05:52:08
haXe’s format.abc is close what I’m looking for, but I’d like to be able to write code directly in assembly, not haXe code that generates assembly.If I can’t find a better option, this is probably what I’ll use; the haXe library looks like it’s very well done.
also  2009-08-02 06:21:38
A: 

It looks like As3c is what I'm looking for:

As3c is a bytecode compiler for the AVM2 written in C#.

also  2009-08-28 00:29:02

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