IPCs

Hello, I am trying to make a simple IPC logger in L4 (by modifying the kernel). I want to eventually log src, dest, and contents of the message. Where would be most effective place in the l4 kernel to do this, and how should I go about getting the message contents -- eg registers, flex pages or strings ? Thanks, Andrew -- Andrew Winter Davenport Georgia Institute of Technology College of Computing www.prism.gatech.edu/~gtg259m