how to force C++ objects to an address? (ABI issue B-7)

[Anthony Heading <aheading at jpmorgan dot com>]

Hi,

I asked this question on two gcc lists, without any result. Perhaps
this is a better place to ask?

In http://www.codesourcery.com/cxx-abi/cxx-closed.html#B7, the question
of how to support C++ objects in shared memory is resolved by requiring
"to force the objects, Vtables, functions, etc. to the same addresses
in the various processes involved."

How could this be done with g++ and binutils (specifically on Linux
or Solaris if that is relevant)?  Is it necessary only to ensure
that a common shared library is mapped into memory at the same location
in each process? Or is it more complex than that?

Any help much appreciated!

Thanks

Anthony



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