[Vm-dev] Re: Need a marker primitive

[Eliot Miranda]

Hi Tim,

    why not create a subclass of InterpreterProxy to use as your interface and have it implement primitiveFail appropriately?  You can also create a subclass of BitBltSimulation to modify as required for your situation.  I don't see that a pragma solved anything here.

Eliot (phone)

On Apr 25, 2015, at 2:28 PM, timfelgentreff <timfelgentreff at gmail.com> wrote:

> 
> 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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