Both of these exist (to various degrees) at http://uclibc.debian.net/ .
I'm not sure the specific binary packages you need are built -- the
uclibc package there can be cross-built with the standard emdebian
cross compiler package, and the toolchain package is a simple wrapper
that can be easily rebuilt (also needs glibc based cross compiler
installed).
The following packages have unmet dependencies:
uclibc-toolchain: Depends: g++-4.1 (= 4.1.1-21) but 4.1.2-19 is to be installed
E: Broken packages
If you manage to compile all packages that you need against the uclibc
packages, removing glibc should be possible.