At 17:42 2/1/00 +0100, Wolfgang Hoschek wrote:
>Does anyone know whether there are any VMs out there that generate CPU
>specific machine code?
>Eg. detect a PentiumIII and issue approprate prefetch instructions, etc.
>If so, is there material available describing how far such CPU specific
>support goes?
The VM itself persee wouldn't be generating machine code, rather executing
it's own in order to interpret your class; thus it's a compiler question,
how was the jvm compiled? does the vm itself use those instructions?
Actually, I think you may be refering to JITC technology? In which case
I know the IBM jitter generates cpu level specific code on other platforms,
based on the diagnostic outputs I have been asked to copy to them for
problem determination... I don't know about the linux jit. IBM research
may have put out some papers about jit methodology... but I doubt they
would go into that level of detail.....
cabbey at home dot net <*> http://members.home.net/cabbey
I want a binary interface to the brain!
Today's opto-mechanical digital interfaces are just too slow!
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