From: "Andreas Färber" <andreas.faerber@web.de>
To: Stefan Weil <weil@mail.berlios.de>
Cc: QEMU Developers <qemu-devel@nongnu.org>
Subject: Re: [Qemu-devel] [PATCH 6/8] tcg: Add bytecode generator for tcg interpreter
Date: Sun, 09 Oct 2011 18:19:14 +0200 [thread overview]
Message-ID: <4E91C982.2060501@web.de> (raw)
In-Reply-To: <4E87853B.20308@mail.berlios.de>
Am 01.10.2011 23:25, schrieb Stefan Weil:
> Am 01.10.2011 18:54, schrieb Andreas Färber:
>> Am 17.09.2011 22:00, schrieb Stefan Weil:
>>> +The bytecode consists of opcodes (same numeric values as those used by
>>> +TCG), command length and arguments of variable size and number.
>>
>> While reusing TCG opcode values certainly makes things easy to
>> implement, have you evaluated using LLVM bitcode as alternative to a
>> fully custom intermediate code format?
>
> I had a look on several bytecode representations - initially I thought
> of using Java. LLVM was on my list, too, but I cannot say that I really
> evaluated any of these alternatives. My primary goal was to learn more
> about TCG and to get something working, and as you said, reusing the
> TCG opcodes made things easier.
Okay, just thought I'd ask the blunt question. :)
We should be careful not to expose it to outside processes as discussed
elsewhere in the thread or we will have to start caring about ABI
versioning.
> LLVM might also be used as a replacement for TCG.
> It would be really interesting to see how both compare.
Maybe suited for a GSoC project?
Andreas
next prev parent reply other threads:[~2011-10-09 16:19 UTC|newest]
Thread overview: 48+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-09-17 19:59 [Qemu-devel] [PATCH 0/8] tcg/interpreter: Add TCG + interpreter for bytecode (virtual machine) Stefan Weil
2011-09-17 20:00 ` [Qemu-devel] [PATCH 1/8] tcg: Declare TCG_TARGET_REG_BITS in tcg.h Stefan Weil
2011-09-17 20:00 ` [Qemu-devel] [PATCH 2/8] tcg: Don't declare TCG_TARGET_REG_BITS in tcg-target.h Stefan Weil
2011-09-17 20:00 ` [Qemu-devel] [PATCH 3/8] tcg: Add forward declarations for local functions Stefan Weil
2011-09-17 21:40 ` Peter Maydell
2011-09-17 20:00 ` [Qemu-devel] [PATCH 4/8] tcg: Add some assertions Stefan Weil
2011-09-17 20:00 ` [Qemu-devel] [PATCH 5/8] tcg: Add interpreter for bytecode Stefan Weil
2011-09-18 4:03 ` Andi Kleen
2011-09-18 5:49 ` Stefan Weil
2011-09-18 7:22 ` Paolo Bonzini
2011-09-18 17:54 ` Avi Kivity
2011-09-19 6:52 ` Andi Kleen
2011-09-19 11:56 ` Avi Kivity
2011-09-19 14:48 ` Andi Kleen
2011-09-18 10:18 ` Blue Swirl
2011-09-19 16:43 ` Richard Henderson
2011-09-19 20:24 ` Stuart Brady
2011-10-16 21:54 ` Stuart Brady
2011-09-17 20:00 ` [Qemu-devel] [PATCH 6/8] tcg: Add bytecode generator for tcg interpreter Stefan Weil
2011-09-18 10:03 ` Blue Swirl
2011-09-19 22:28 ` Stuart Brady
2011-10-01 16:54 ` Andreas Färber
2011-10-01 21:25 ` Stefan Weil
2011-10-09 16:19 ` Andreas Färber [this message]
2011-09-17 20:00 ` [Qemu-devel] [PATCH 7/8] tcg: Add tcg interpreter to configure / make Stefan Weil
2011-09-18 9:37 ` Blue Swirl
2011-09-18 10:14 ` Stefan Weil
2011-09-17 20:00 ` [Qemu-devel] [PATCH 8/8] ppc: Support tcg interpreter on ppc hosts Stefan Weil
2011-09-17 21:31 ` Peter Maydell
2011-09-17 21:33 ` Stefan Weil
2011-09-18 10:26 ` [Qemu-devel] [PATCH 0/8] tcg/interpreter: Add TCG + interpreter for bytecode (virtual machine) Blue Swirl
2011-09-18 10:49 ` malc
2011-09-18 12:12 ` Blue Swirl
2011-09-18 12:46 ` malc
2011-09-18 13:00 ` Blue Swirl
2011-09-18 13:13 ` malc
2011-09-18 13:26 ` Blue Swirl
2011-09-25 20:37 ` Stefan Weil
2011-10-01 12:02 ` Blue Swirl
2011-09-18 15:02 ` Mulyadi Santosa
2011-09-18 15:13 ` Stefan Weil
2011-09-18 16:39 ` Mulyadi Santosa
2011-09-18 20:15 ` Stefan Weil
2011-09-19 15:14 ` Mulyadi Santosa
2011-09-19 8:40 ` David Gilbert
2011-09-19 10:20 ` Stefan Hajnoczi
2011-09-19 10:27 ` David Gilbert
2011-09-18 18:02 ` Avi Kivity
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