If 'xvlog' or 'xelab' xilinx commands are failing, exit from
run_tb.sh script without trying to run simulation.
Signed-off-by: stefan.raus <stefan.raus@analog.com>
Create a common 'run_tb.sh' script to be called by every testbench.
Unify file and testbenches names.
Fix util_pack/cpack_tb.
Add parameters '-batch' and '-gui' for modelsim and xsim simulators (default is gui)
Add ascript for that generates output in xml format (used by CI tools).
Build a large mux from smaller ones defined by the REQ_MUX_SZ parameter
Use EN_REG to add a register at the output of the small muxes to help
timing closure.