forcing C++ objects to an address (ABI issue B-7)

forcing C++ objects to an address (ABI issue B-7)

[Anthony Heading]

Hi,

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 GCC (specifically on Linux or Solaris if
that is relevant)?  Is it as simple as ensuring the executable text
is in the same place?  Or is some of the vtable data initialized at
runtime?

Any help much appreciated!

Thanks

Anthony



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Re: forcing C++ objects to an address (ABI issue B-7)

[llewelly]

Anthony Heading <aheading@jpmorgan.com> writes:

> Hi,
> 
> 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 GCC (specifically on Linux or Solaris if
> that is relevant)?  Is it as simple as ensuring the executable text
> is in the same place?  Or is some of the vtable data initialized at
> runtime?

I think you will have better luck asing on binutils at gnu.org, or gcc
at gcc.gnu.org .