[Vm-dev] Help/advice tracking down a squeak-vm regression

[Bert Freudenberg]

On 11.05.2012, at 19:43, Eliot Miranda wrote:

> 
> 
> On Fri, May 11, 2012 at 6:46 AM, Bert Freudenberg <bert at freudenbergs.de> wrote:
> 
> I just checked. Most, if not all of the problems, come from Scratch's use of numbered primitives. They were deprecated in favor of named primitives.
> 
> IMHO it would be reasonably simple to re-instate these primitives in the VM. Right now they are simply mapped to primitiveFail. This would get us back the ability to run many old images, unmodified.
> 
> Alas I've used a few of these for Cog:
> 
>  #(#(161 #primitiveSetIdentityHash)
>     #(169 #primitiveNotIdentical)
>     #(175 #primitiveBehaviorHash)
>     #(176 #primitiveMaxIdentityHash)
>     #(185 #primitiveExitCriticalSection)
>     #(213 #primitiveContextXray)
>     #(214 #primitiveVoidVMState)
>     #(215 #primitiveVoidVMStateForMethod)
>     #(218 #primitiveDoNamedPrimitiveWithArgs)
>     #(240 #primitiveUTCMicrosecondClock)
>     #(241 #primitiveLocalMicrosecondClock)
>     #(242 #primitiveSignalAtUTCMicroseconds)
>     #(243 #primitiveUpdateTimezone))
>  
> I think your change set is the way to go.

Well, as David suggested, we could switch them based on the image magic number.

- Bert -


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