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Re: gcj, shared libraries, and -Bsymbolic
On Wed, Jan 26, 2005 at 09:54:58AM +0000, Andrew Haley wrote:
> I know. However, at present this breaks CNI. The Right Way to solve
> this is to fix CNI so that calls to Java methods use the Java
> runtime's name resolution scheme. However, we have a pressing
> deadline for the 4.0 release.
How much work do you think it is?
> Can you give me some idea just how much extra overhead is implied by
> .protected? It seems to me that it has the semantics we require.
Pretty significant. If you ever take the address of a protected
symbol (which I think you're likely to do, building vtables), then
we have to search all the modules in the symbol search path for
the first one that defines a plt entry for that symbol. That plt
entry becomes the canonical value for that symbol.
We really REALLY need some pointer-type relocations that explicitly
say that function pointer equality is not required, cause that's the
only way to fix this.