This demo (customInstructionDemo directory) shows how to use a custom instruction to accelerate the processing time of an algorithm. It demonstrates how performing an algorithm in hardware can provide significant acceleration vs, using software only. This demo uses the Tiny encryption algorithm to encrypt two 64-bit unsigned integers with a 128-bit key.

The demo first processes the algorithm with a custom instruction, and then processes the same algorithm in software. Timestamps indicate how many clock cycles are needed to output results.

Newlib

By default, newlib-nano is used for this demo.

See also: User Debug Configuration - To learn more about User Debug Configuration.

Execution Sequence:

The following shows the expected execution sequence:

***Starting Custom Instruction Demo*** 
Custom instruction method processing clock cycles: 350 
Software method processing clock cycles: 63378 
Custom instruction and software output results are matched .. 
***Succesfully Ran Demo*** 