Brian made a tutorial on using eclipse for JTAG debugging LM3S based boards:
I have published in the docs section a guide on how to use Eclipse to do JTAG based hardware debugging for the LM3S development boards (Cygni, Eridani, Procyon).Eclipse is complex software which has a lot of power and settings, not all of which I know so if you like a setting different than what is in the guide feel free to leave a comment about it or contact me. Same goes if you notice a mistake in the guide.The screenshot above shows how the environment looks after following the guide.
Via the forum.