Question

write an assembly program which computes the hamming distance between the values in R0 and R1 and returns the result in R2

Answer 1

So I will provide the c++ code of hamming code after I will convert it into assembly language

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// Function to calculate hamming distance 

int hammingDistance(int n1, int n2) 
{ 

    int x = n1 ^ n2; 

    int setBits = 0; 

  

    while (x > 0) { 

        setBits += x & 1; 

        x >>= 1; 

    } 

hammingDistance:
push rbp
mov rbp, rsp
mov DWORD PTR [rbp-20], edi
mov DWORD PTR [rbp-24], esi
mov eax, DWORD PTR [rbp-20]
xor eax, DWORD PTR [rbp-24]
mov DWORD PTR [rbp-4], eax
mov DWORD PTR [rbp-8], 0
jmp .L2
.L3:
mov eax, DWORD PTR [rbp-4]
and eax, 1
add DWORD PTR [rbp-8], eax
sar DWORD PTR [rbp-4]
.L2:
cmp DWORD PTR [rbp-4], 0
jg .L3
mov eax, DWORD PTR [rbp-8]
pop rbp
ret