[Vm-dev] 64bit FFI?

Andreas Raab andreas.raab at gmx.de
Thu Feb 12 19:07:22 UTC 2009

Eliot Miranda wrote:
> I'm assuming that in-memory the 64-bit VM has 64-bit oops, right?  So 
> the VM has to swizzle 32-bit pointers to 64-bit.  I haven't come across 
> this swizzling code yet.  I thought that the swizzling was done by the 
> system tracer.  Where is the in-VM code to swizzle pointers to 64-bits?

oopForPointer/pointerForOop translate between OOPs and pointers. So you 
can translate from a 32bit Oop into a 64bit pointer by adding a base 
address and vice versa.

   - Andreas

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