Hi,

I made a new version of the system-tracer (in attachment).
It works fine with the latest pharo version.

For wordSize, we decide to create a instance variable in SmalltalkImage, which is initialized at startup.
The method initialPC is:

---
initialPC
	"Answer the program counter for the receiver's first bytecode."

	^ (self numLiterals + 1) * SmalltalkImage current wordSize + 1
---

The fix will be integrated in Pharo soon.
It is also in attachment.

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Cheers

On Jan 3, 2010, at 06:46 , John M McIntosh wrote:

> Ok, well I was hoping that Laval Jannik would review the changes/solution in http://bugs.squeak.org/view.php?id=7430
> then update his original System-Tracing.2forPharo3.cs  Then test to confirm we can build a 64bit image from the current Pharo image
> 
> 
> On 2010-01-02, at 6:46 PM, David T. Lewis wrote:
> 
>> John, one additional note.
>> 
>> The SystemTracer changesets currently in circulation have an obsolete
>> implementation of SystemDictionary>>wordSize.The original 64-bit
>> Squeak used vmParameterAt: 27 for the VM to answer its word size,
>> but this was later changed to vmParameter at: 40. This is the reason
>> that the original "dist3" 64-bit image does not work on current VMs.
>> 
>> You will want to revert #wordSize back to a current version
>> so that it uses vmParameter at: 40.
>> 
>> This issue will go away when we implement the cached #wordSize fixes
>> discussed separately (http://bugs.squeak.org/view.php?id=7430), but
>> I wanted to mention it because I spotted the obsolete method in the
>> System-Tracing2forPharo.cs change set.
>> 
> 
> --
> ===========================================================================
> John M. McIntosh <johnmci at smalltalkconsulting.com>   Twitter:  squeaker68882
> Corporate Smalltalk Consulting Ltd.  http://www.smalltalkconsulting.com
> ===========================================================================
> 
> 
> 
> 

---
Jannik Laval
---