A. What value does rfun store in the callee-saved register%rbx?

B. Fill in the missing expressions in the C code shown above.

C. What does rfun(3,4)return in%rax?

Problem 9. (8 points): Extra Credit Consider a C function having the general structure: long int rrun(long int x, long int y) long init nx long int ny - longint ry - 0 return 1 IV - rfun (nx, nyl; return This Coude yields the following y86 64 machine code: fun: irmova remove anda js $0, Srax Ardi, rdx Srd, rdx .LB .LB: pushg Srbx renoversi, Srbx irmov -1, "rdx adda rdx, si adda rdx, Erdi call rtun addq Srba, rax pop ret The questions on the next page are about these pieces of code, Problem 9. (8 points): Extra Credit Consider a C function having the general structure: long int rrun(long int x, long int y) long init nx long int ny - longint ry - 0 return 1 IV - rfun (nx, nyl; return This Coude yields the following y86 64 machine code: fun: irmova remove anda js $0, Srax Ardi, rdx Srd, rdx .LB .LB: pushg Srbx renoversi, Srbx irmov -1, "rdx adda rdx, si adda rdx, Erdi call rtun addq Srba, rax pop ret The questions on the next page are about these pieces of code