New Cog VMs available

>
> at http://www.mirandabanda.org/files/Cog/VM/VM.r3236/
>
> CogVM binaries as per VMMaker.oscog-eem.1029/r3236
>
> Fix stupid, stupid bug in copying vm profile samples between buffers when the
> circular buffer index has wrapped.
>
> Fix monumental blunder in jitted store-check code.  The saved registers mask
> needs to be the *or* of the value reg and the caller-saved registers, not the
> *and*!!
>
> Make the pin primitives Spur-only.
>
> Never inline mapStackPages, for debugging.
>
> Spur:
> Reduce the max num literals in the alternate header format to 15, and steal
> the bit for the Sista optimized method flag.
>
> Make postBecomeAction's stack sweep only occur in Spur (fix regression).
> Refactor so that the scan is not inlined. Don't assume newMethod is
> non-immediate in post-become actions.
>
> Fix stack adjust slip in primitiveSmallFloatTimesTwoPower
>
> Make ensureBehaviorHash: fail for uninitialized
> behaviours and hence fix the Behavior basicNew basicNew hang.
>
> Optionalize some api methods the Spur Cogit doesn't use.
>
> Rename and correct ensureSemaphoreForwardedThroughContext: to
> ensureSemaphoreUnforwardedThroughContext:, its intended function.
>
> Make shouldRemapObj: filter-out objects already in newSpace
> since mapStackPages, via mapInterpreterOops, can visit objects
> twice in a scavenge, GC, compact sequence.
>
> Make sure the caller (& saved) context(s) in base frames stack page are
> followed post-become in followForwardingPointersInStackZone:.
>
> Fix bad bug introduced in become changes in  VMMaker.oscog-eem.841 through 844.
> The class table contains puns, e.g. using Array and WeakArray.  These class
> index puns must not mislead the allInstances primitive into concluding that
> the class in question is at multiple indices and wrongly purge it.
>
> Fix slip in primitivePin. Also be lenient w.r.t. unpinning married contexts.
> Move the check down into StackInterpreter's version.  This allows e.g.
>     self allObjectsDo: [:o| o unpin]
>
> Bow to the inevitable and add a manual override for primitive accessor depth.
> Use it in at: & at:put:.  If manual override is not used then the automatically
> computed depth is too deep because of context access.
>
> Newspeak:
> Integrate Ryan's newer absent receiver sends, which first apeared in
> VMMaker.oscog-eem.919, abandoned because of Glue issues now resolved.  Includes
> nice refactoring of absent send argument marshalling into its own routine.
>
> LargeIntegersPlugin:
> Remove/fix assumption of 32-bit digit length in normalization routines.
>
> --
> best,
> Eliot
>

>
>
> On 02-02-2015, at 9:24 AM, Douglas McPherson <[hidden email]> wrote:
>
> > ARMv6 stack/v3 and stack/spur VMs updated accordingly.
>
> We’ll soon be adding ARMv7 quadcore Pi support -
> http://www.raspberrypi.org/raspberry-pi-2-on-sale/
>
> I’ve been using one for some time now and it is certainly nicely faster. The multiple cores make quite a difference to overall system performance even if Squeak can’t directly take advantage. The memory interface seems faster too.

>
> ---- tim Rowledge <[hidden email]> wrote:
>>
>>
>> On 02-02-2015, at 9:24 AM, Douglas McPherson <[hidden email]> wrote:
>>
>>> ARMv6 stack/v3 and stack/spur VMs updated accordingly.
>>
>> We’ll soon be adding ARMv7 quadcore Pi support -
>> http://www.raspberrypi.org/raspberry-pi-2-on-sale/
>>
>> I’ve been using one for some time now and it is certainly nicely faster. The multiple cores make quite a difference to overall system performance even if Squeak can’t directly take advantage. The memory interface seems faster too.
>
> I was going to ask you about this as I saw the RPi 2 announcement today. I figured you probably already had one :)