Hmm, why would anyone need to have asm snippets in a document processing
suite? And it looks like the bits are ABI-dependent, so at least three
variations (if the changes are endianness-safe) would be required to
handle all the ABIs that we support.
Openoffice wants to be able to interact with plugins written in many
languages, instead of writting a module for each possible combination it
chooses the so called bridge: every language interact with a common middle
language.
So we have now foreign function interfaces for at least OpenOffice, Mozilla,
Clisp and GCC's libffi. libffi recently got support for N32/N64 ABIs, and
is the only solution which isn't bound to a specific application (as long
as GCC is used).
Using libffi from Openoffice looks like the best long-term approach
to me.