Question

Translate the following C code into M4K assembly language. You do not have to use the frame pointer, just use $sp if you need to use the stack. You do not have to show the stack initialization nor stack cleanup. If you need a specific value for an address, just make an assumption.

int A;

main()

{

int B = 5;

B = A+B

}; // main

//Disassembly starts here

!main()

{

//stack and frame pointer init // you do not have to show it

! int B = 5; //fill in the blanks

! B = A + B; //fill in the blanks

} // main

Answer 1

A:

.zero 4

main:

push rbp

mov rbp, rsp

mov DWORD PTR [rbp-4], 5

mov eax, DWORD PTR A[rip]

add DWORD PTR [rbp-4], eax

mov eax, 0

pop rbp

ret