From: Bakul Shah <bakul@bitblocks.com>
To: Fans of the OS Plan 9 from Bell Labs <9fans@9fans.net>
Subject: Re: [9fans] JIT (mostly off topic)
Date: Tue, 9 Sep 2014 21:48:14 -0700 [thread overview]
Message-ID: <20140910044814.78442B827@mail.bitblocks.com> (raw)
In-Reply-To: Your message of "Tue, 09 Sep 2014 22:45:01 BST." <5027045b88fe7d178a0926131e4205f1@quintile.net>
On Tue, 09 Sep 2014 22:45:01 BST "Steve Simon" <steve@quintile.net> wrote:
> Years ago The Commander and Bart Locanthi used JIT
> in the form of some C that write machine code into an
> array of chars, cast it to a function pointer, and called it.
> (I appologise if the details are not correct but this is the idea).
>
> I have a need for such a thing again - trying to speed up
> a compressed video decoder.
>
> Anyone done such a thing this millenium? Does the x86 data execution
> prevention mean you just cannot do this - my targets are desktop OSs
> other than plan9 (sadly).
Have you looked at libjit or luajit? There are a bunch of
projects using JIT on the fly! You may also want to look at
Nils Holm's subc (a 5Kloc compiler for a subset of C +
codegens for 386,arm,x86-64, each in 260..427 lines). For an
example of generating assembly code using C functions.
prev parent reply other threads:[~2014-09-10 4:48 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-09-09 21:45 Steve Simon
2014-09-09 22:04 ` Aram Hăvărneanu
2014-09-09 22:09 ` Daniel Peyrolon
2014-09-09 22:18 ` Skip Tavakkolian
2014-09-09 23:53 ` Rob Pike
2014-09-10 4:48 ` Bakul Shah [this message]
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