[Vm-dev] literals in compiled method

[Helmut Rohregger]

Am 15.03.2013 13:18, schrieb Mariano Martinez Peck:
>
> On Thu, Mar 14, 2013 at 8:35 PM, Helmut Rohregger 
> <helmut.rohregger at gmail.com <mailto:helmut.rohregger at gmail.com>> wrote:
>
>
>     Hi all
>
>     maybe someone of you can help me.
>     i am trying to read in a Squeak4.3.image in Java. My question is
>     about the image-format.
>     when i read in a compiled method, there is a object header, then a
>     compiled method header and then some literals. The last 2 literals
>     are always a ByteSymbol (message selector) and an association
>     which contains the class. 
>
>
> Not always ;)  For those methods that have primitives/pragmas, the 
> penuntimal literal is an instance of AdditionalMethodState (which 
> contains the selector).
> See (Object>>#class) literals at: 2
>
ah ok. So this is an AdditionalMethodState which holds the selector and 
pragmas or properties. Thanks for pointing this out.
>
>     I know the address of this association is at 0x1631470 in my image.
>     But the address stored as literal in the compiled method is
>     0x4801470. This is 0x31D0000 more then expected.
>     Anyone an idea, where this comes from?
>     Or maybe some help, where to look, to discover this?!?
>
>     thanks
>
No idea, why the stored address differs from the real address?
>
> -- 
> Mariano
> http://marianopeck.wordpress.com

Helmut

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