Re: Stack based-Register Based

On 20 Jan 2001 16:13:22 -0500, anton@mips.complang.tuwien.ac.at (Anton
Ertl) wrote or quoted :


>for interpreters stack machines are a good choice


These are easy to generate code for and easy to implement. Lots of
hobbyists have implemented a Forth interpreter for example, which is
very similar to a JVM. It ensures rapid proliferation to many
platforms, at least of a simple interpreter.


You don't need to deal with the problem of a limited supply of
registers. Since the number of registers and the way they work can
vary so much between platforms, it is best to keep any assumptions
about how they work out of the JVM design. That is really more a
matter of optimising and fine tuning.


A stack machine that almost fully implements the JVM stack machine
directly is quite possible. You don't need the overhead of a JIT.
This is important is something as tiny as a cellphone.




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Custom computer programming since 1963

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