[Vm-dev] Re: Need a marker primitive

[timfelgentreff]

In RSqueakVM we always run the simulation for BitBlt and Balloon (so when
e.g. the copyBits primitive comes up, the VM just creates a frame running
the copyBitsSimulated method). This generally works well, but when the
simulation triggers a primitiveFail, it'll just be a Smalltalk-level halt,
and we have to jump through hoops in RSqueakVM to catch that and run the
fallback code. If instead we add a primitive into
InterpreterSimulator>>primitiveFail, we can catch that and know that we
should run the fallback code.



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