rtems coverage testing through an open source simulator?

[shizheng]

Hi, all

I feel very interesting about RTEMS testing.
On the wiki page(http://rtems.rtems.org/wiki/index.php/Open_Projects),
it says "Automated coverage testing using an open source simulator".
Can anyone give a more detailed description about it?

I guess that some people may have already done a simulator
which helps coverage testing a lot, but I couldn't find one :(

regards, shizheng