Write the assembly code for this function:
int addInt8ToInt(int8_t num1, int num2):
Adds an 8-bit signed value to a 16-bit signed value and returns a 16-bit signed result. To do this properly, you should convert the 8-bit argument to a 16-bit argument before performing the addition. Use your int8ToInt function to accomplish this. Be careful with your registers! Even if nothing bad happens when you use call-used or call-safe registers we will be checking to make sure that you used them properly.