Need to know how to make an ARMV8 assembly call from C code

Hello. I'm working on a DS-5 project for a computer architecture class.

Our instructor set up and put the project up for download. However for our final project my group and I are to work together on a small implementation of our choice.

Since its not easy to work on assembly in the same file together, we would like to add two additional calls to our C code provided by the instructor.

I need to know how to do such a thing. If someone could point me to a tutorial or explain the process I would greatly appreciate it!