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CVS HEAD has preliminary support for callbacks on some platforms, but the interface is neither exported nor finalized yet.

See sbcl-devel for lenghty interface ramblings by Nikodemus. His current plan is to leave future issues to future and finish the current stuff first: if Win32 port needs an extended interface that means we must break all of SB-ALIEN, so be it -- but little sense to worry about it right now. TODO

Describtion of the callback mechanism can be found in the internals manual under "Foreign linkage".

Patch to fix PPC callback and vararg bugs on sbcl-devel

I've submitted a patch to sbcl-devel that roll rtoym's cmucl bug fixes over to sbcl. This fixes bugs with calling vararg functions, callbacks with 64-bit args and args <= 16 bits. -- Cyrus Harmon

callback API status?

Is this going to be finalized any time soon?

sbcl-callback stuff in cvs

can this be removed?

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