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Re: [Qemu-devel] [patch] gcc4 host support

From: Ian Rogers
Subject: Re: [Qemu-devel] [patch] gcc4 host support
Date: Thu, 19 May 2005 17:18:42 +0100
User-agent: Mozilla Thunderbird 0.8 (X11/20040913)

You may also want to look at Dawson Engler's VCODE. Like GNU Lightning it's not been touched in a while.


Gwenole Beauchesne wrote:

On Thu, 19 May 2005, Paul Brook wrote:

Do you have a URL? Neither google nor freshmeat.net turn up anything useful.

Sorry, here it is:
<http://svn.valgrind.org/vex/trunk/> (used for valgrind 3.0)

It would be nice if we could use some sort of portable JIT library, however I think in reality a few qemu specific hacks(most of which we already use with dyngen) and a relatively dumb JIT are going to perform better.

What about using GNU lightning as an intermediate solution? It has a RISC-style ISA with up to 6 registers exposed. It's "dumb" (no optimization) but it's good at generating code. I think it matches most the "synthetic instruction" approach of dyngen.

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