[Vm-dev] New Cog VMs available

Tobias Pape Das.Linux at gmx.de
Thu Mar 5 21:43:02 UTC 2015

Hi Eliot,

Thanks for the new build!

On 05.03.2015, at 22:22, Eliot Miranda <eliot.miranda at gmail.com> wrote:

> Hi All,
>     recent instability seems to have been cured.  Please find new VMs at http://www.mirandabanda.org/files/Cog/VM/VM.r3266.  For Squeakers, these are close to release candidates for the upcoming 5.0 release.

Mentioning this, I'd like to ask what your policy regarding bundled plugins is.
Which ones won't be included, which ones could?
For example, I am missing the FT2 plugin or the ObjectiveC-Plugin for OSX.


>  I have one last modification to do with free space handling on start-up in Spur (the current VMs over-allocate free space), and maybe a minor speed-up of the LargeIntegersPlugin; other than that I intend bug fixes only.
> CogVM binaries as per VMMaker.oscog-eem.1085/r3266
> Avoid duplication in fetching active process and scheduler in process-switch machinery.
> Take advantage of endianness for simpler large integer initialization.
> Simplify primitiveMakePoint. Include primitiveMethodXray to introspect on Cog state of methods.
> Refactor positive32BitIntegerFor: and signed32BitIntegerFor: in the realization that these
> reduce to essentially integerObjectOf: in 64-bit Spur.  The idea is to inline if in 64-bit Spur
> but not if in the 32-bit VMs.  Add notOption: processing to allow excluding
> noInlineSigned32BitIntegerFor: et al.  Add hasSixtyFourBitImmediates to no longer assume that
> wordSize = 8 implies 64-bit immediates.
> Use positiveMachineIntegerFor: in place of positive32BitIntegerFor: in some plugins.
> Simplify primitiveDisplayString given isArray:.
> Simplify two B3DAcceleratorPlugin prims given topRemappableOop and isArray:
> Slang:
> Changes to type inferrence/propagation and inlining to better support 64-bit Spur.
> See change log of VMMaker.oscog in 1067-1085 range for exhaustive details.

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