On Fri, Sep 23, 2011 at 6:40 AM, Nick. nick.lsts@gmail.com wrote:

Hi guys!

In the past few days i tried to get InterpreterSimulator running without success. First of all, a little context about my goal: I'm digging into the VM because i would like to be able to delegate to some class (that I'll develop) the responsibility for, say, the method lookup algorithm.

With that in mind, here's what i've been doing: Using the Pharo 1.2 image Mariano Peck's prepared in his exellent article (http://marianopeck.wordpress.com/2011/04/23/how-to-debug-the-vm/), loaded the VMMaker package with the following script:

Deprecation raiseWarning: false. Gofer new squeaksource: 'MetacelloRepository'; package: 'ConfigurationOfCog'; load. (Smalltalk at: #ConfigurationOfCog) project latestVersion load.

Once it finishes (without errors) I "Save As" the current image as "demo.image", close it and open the original Pharo 1.2 image that Mariano provided. When, for example, I run:

(CogVMSimulator new openOn: 'demo.image') test or (InterpreterSimulatorLSB new openOn: 'demo.image') test

I get the following error: "Error: basicNew: failed" (see attached images at the end).

Weird. Something I remember about the simulator is that you need to run it with a VM that has the BochsIA32Plugin. Try Eliot's VM that will have it for sure. But anywya, I doesn't look related to your particula problem.

When I tried to load VMMaker in the Pharo 1.3 OneClick release, I got another error (see attached images at the end).

Yes, because you need some changes in order to make it work. I have attached those changes in the post. But those changes should be already integrated in latests Pharo 1.3. You don't have that error in the image I put of 1.2 because that image comes already with such changes.

Am I doing something wrong? Are those the right simulators to use? I can tell the difference between all that are available in VMMaker package.

Well...it depends on what you want. FOr example, if you build a stack VM then you should use instead StackInterpreterSimulator. So..for the Cog VM I guess it is CogVMSimulator.

If you go to here: http://www.squeakvm.org/svn/squeak/branches/Cog/image/ you can see http://www.squeakvm.org/svn/squeak/branches/Cog/image/VM%20Simulation%20Work... It might be outdated, but it can be a start point.

cheers

Thanks in advance!

Nick

http://forum.world.st/file/n3835723/error_while_trying_to_run_InterpreterSim...

http://forum.world.st/file/n3835723/Error_while_loading_VMMaker_in_Pharo-1.3...

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