[Vm-dev] New Cog VMs available

Eliot Miranda eliot.miranda at gmail.com
Fri Sep 26 23:50:31 UTC 2014

... at http://www.mirandabanda.org/files/Cog/VM/VM.r3083

CogVM source as per VMMaker.oscog-eem.886/r3083

Fix regression in V3 become youngReferrers management in
We /must/ prune young referrers if mapObjectReferencesInMachineCodeForBecome
removes a cog method from youngReferrers because it may get added back and
youngReferrers cannot contain duplicates.

Fix bug in sweepToFollowForwardersForPigCompact which failed to update and
answer lowest forwarder.  Fixes numForwarders == 0 assert failures.

Fix bug with become and class table not removing
classes which become causes them to be unhashed.

Fix bogus assert fail in synchronousSignal:. Refactor following code into
ensureSemaphoreForwardedThroughContext: and fix the assert there-in.

Use rawOverflowSlotsOf: in bytesInObject:.

Make a little more progress on Spur image segment support.  Provide a
classTableEntriesDo: and use it to compute an arrayOfUnmarkedClasses.

Make sure voidImplicitReceiverCacheAt: sets codeModified if IRCs are inline.

Make sure freeMethod: clears cmRefersToYoung

Fix assert in cogitPostGCAction: that would fire erroneously in Spur become.

Move evaluation of Cogit primitive desacriptor enabled function from
initialization to just-in-time, and add enablers on SmallInteger primitives
to ensure they are applied only to SmallInteger receivers (falling back to
interpreter prims if not).  Hence fix Cog for 4.1 (e.g. MuO) images.

Back out of saneMethodClassAssociation assert in
initialPCForHeader:method:.  Newspeak falls foul of this.

Make sure that the method is set on returning from a callback.
Fixes MNUs of atAddress: in exampleCqsort in the stack VMs.

Fix bugs in scripts and Windows manifests.

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