1. Explain in detail this instruction:

 mov rdi, [rbp-8] 

2. Assume that main calls foo. If foo and main follow standard calling conventions, what is accomplished by these instructions in foo?

 push rdi push rsi 

3. What does this instruction accomplish?

 imul rax, rsi, 4 

4. Explain these two instructions (taken from fac.asm).

 pop rsi mul rsi