Re: Public domain Pcode spec/interpreter

pardo@cs.washington.edu (David Keppel)
Sat, 17 Sep 1994 21:40:25 GMT

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Newsgroups: comp.compilers
From: pardo@cs.washington.edu (David Keppel)
Keywords: code
Organization: Computer Science & Engineering, U. of Washington, Seattle
References: 94-09-033 94-09-070
Date: Sat, 17 Sep 1994 21:40:25 GMT

John Levine writes:
>[There have been lots of systems that use p-code to permit highly portable
>binaries. ...]


As a historical footnote, I recall my cousin (an old-time hacker) said
that a company in the 60's wrote most of their compilers in a virtual
machine code. Retargeting meant writing a new back-end, a new
interpreter, and some key inner loops, but the basic task was
simplified over a machine language port. Speed was OK because the
v-code primitives were tuned to common compiler tasks.


If anybody wants details, let me know and I'll ask for 'em.


;-D on ( History hysteria ) Pardo
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