<a href="http://www.cs.washington.edu/research/compiler/papers.d/shade.html">Shade: 		A Fast Instruction-Set Simulator for Execution Profiling</a>.         A fast extensible cross-machine simulator that collects all         sorts of tracing information. 	It's implemented using RTCG. 	See also the 	<a href="http://www.cs.washington.edu/homes/pardo/sim.d/index.html">Simulators 		home page</a>. </ul>
