ARM Cogit
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Hi All,
thanks to hard work by Tim Rowledge and Lars Wasserman we now have a functional JIT for the ARM in the simulator. We're still probably some weeks away from a functional ARM JIT VM; issues like instruction cache flushing on real hardware can be tricky to solve. But we're at least ready to start trying to compile the JIT VM for ARM. Doug, see that I added a build directory for build.linux32ARM/squeak.cog.spur. Hopefully a fast VM for Raspberry Pi and Android is only a few weeks away. -- best,
Eliot |
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Yes!
Thanks to all for that effort. Thierry Le 22/04/2015 20:42, Eliot Miranda a écrit : > Hi All, > > thanks to hard work by Tim Rowledge and Lars Wasserman we now have > a functional JIT for the ARM in the simulator. We're still probably > some weeks away from a functional ARM JIT VM; issues like instruction > cache flushing on real hardware can be tricky to solve. But we're at > least ready to start trying to compile the JIT VM for ARM. Doug, see > that I added a build directory for build.linux32ARM/squeak.cog.spur. > Hopefully a fast VM for Raspberry Pi and Android is only a few weeks away. > -- > best, > Eliot |
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In reply to this post by Eliot Miranda-2
> On 22 Apr 2015, at 14:42, Eliot Miranda <[hidden email]> wrote: Hi, > thanks to hard work by Tim Rowledge and Lars Wasserman we now have a functional JIT for the ARM in the simulator. We're still probably some weeks away from a functional ARM JIT VM; issues like instruction cache flushing on real hardware can be tricky to solve. But we're at least ready to start trying to compile the JIT VM for ARM. Doug, see that I added a build directory for build.linux32ARM/squeak.cog.spur. Hopefully a fast VM for Raspberry Pi and Android is only a few weeks away. tricky in which sense? The Linux kernel offers a syscall (cacheflush) where one provides the start page and end page and GCC provides a builtin function for this as well (__clear_cache). holger cache flush: https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/tree/arch/arm/kernel/traps.c?id=9ea18f8cab5f1c36cdd0f09717e35ceb48c36a87#n611 |
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In reply to this post by Eliot Miranda-2
> On Apr 22, 2015, at 11:42, Eliot Miranda <[hidden email]> wrote:
> > Hi All, > > thanks to hard work by Tim Rowledge and Lars Wasserman we now have a functional JIT for the ARM in the simulator. We're still probably some weeks away from a functional ARM JIT VM; issues like instruction cache flushing on real hardware can be tricky to solve. But we're at least ready to start trying to compile the JIT VM for ARM. Doug, see that I added a build directory for build.linux32ARM/squeak.cog.spur. Hopefully a fast VM for Raspberry Pi and Android is only a few weeks away. > -- > best, > Eliot +1000 This is terrific news! Thanks to you, Tim, and Lars! Doug |
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In reply to this post by Holger Freyther
Hi Holger,
On Wed, Apr 22, 2015 at 11:52 AM, Holger Freyther <[hidden email]> wrote:
that's good news. It wasn't always that easy. When we got the ARM JIT working for VisualWorks we had to use hand-rolled code to flush the cache as linux didn't provide a reliable function at that time. So perhaps we're closer than we think. But it's always wise to lengthen time estimates, not shorten them :-) holger best,
Eliot |
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In reply to this post by Eliot Miranda-2
Yes , yes , yesssss , would love to have Pharo available on Android and use it on my smartphone on a daily basis , thank you very much guys.
On Wed, Apr 22, 2015 at 9:42 PM Eliot Miranda <[hidden email]> wrote:
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In reply to this post by Eliot Miranda-2
This is really excellent!
Keep pushing this. I'm eager to play with a raspberry. We should continue to revisit the UI elements to consume less in any case. Because I'm convinced that we are doing too many things at the wrong place. Stef Le 22/4/15 21:42, Eliot Miranda a écrit : > Hi All, > > thanks to hard work by Tim Rowledge and Lars Wasserman we now have > a functional JIT for the ARM in the simulator. We're still probably > some weeks away from a functional ARM JIT VM; issues like instruction > cache flushing on real hardware can be tricky to solve. But we're at > least ready to start trying to compile the JIT VM for ARM. Doug, see > that I added a build directory for build.linux32ARM/squeak.cog.spur. > Hopefully a fast VM for Raspberry Pi and Android is only a few weeks away. > -- > best, > Eliot |
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Hi Any news on Pharo VM for android? ;) Cheers, Alex On Thu, Apr 23, 2015 at 7:54 AM, stepharo <[hidden email]> wrote: This is really excellent! |
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Alex, have you tried building a Cog VM from the Cog svn sources? I expect, provided you hack around the NativeBoost uses, that the VM will work. On Tue, Oct 6, 2015 at 12:55 PM, Aliaksei Syrel <[hidden email]> wrote:
_,,,^..^,,,_ best, Eliot |
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In reply to this post by Aliaksei Syrel
Hi alex
First we are discussing with inria to see if one of their engineer can work a month to check what jb did. Because JB was revisiting the VM from scratch but he did not finish. It will be on the roadmap for the new engineer the consortium will hire. Second you can find information about the way Jannik deployed Phratch on Android http://www.phratch.com/archives/408 Stef
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In reply to this post by Eliot Miranda-2
Android needs also some java crap in the middle (along with an “idle vm”) to work… just ARM support is not enough. But there was CogDroid some time ago, kind of hacky but worked and there is JB work who I hope is taken and finished eventually/soon. btw… my idea is to take JB's approach to “idle vm” and (once finished) translate it to regular VM… consuming a constant of 5% cpu is not good at all :(
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