i need help writing this naked function in assemply code __declspec(naked) int i

Question

i need help writing this naked function in assemply code

__declspec(naked)

int isPalindrome(char *input_string, int left_index, int right_index)

   // C code to be converted to x86 assembly /* Input Validation
   if (NULL == input_string || left_index < 0 || right_index < 0){
   return -1;
   }
   // Recursion termination condition
   if (left_index >= right_index)
   return 1;
   if (input_string[left_index] == input_string[right_index]){
   return isPalindrome(input_string, left_index + 1, right_index - 1);
   }
   return -1;
   */

__asm {
       mov eax, 0
       // BEGIN YOUR CODE HERE

       // END YOUR CODE HERE
       ret

Explanation / Answer

isPalindrome(char*, int, int):
        push    rbp
        mov     rbp, rsp
        sub     rsp, 16
        mov     QWORD PTR [rbp-8], rdi
        mov     DWORD PTR [rbp-12], esi
        mov     DWORD PTR [rbp-16], edx
        cmp     QWORD PTR [rbp-8], 0
        je      .L2
        cmp     DWORD PTR [rbp-12], 0
        js      .L2
        cmp     DWORD PTR [rbp-16], 0
        jns     .L3
.L2:
        mov     eax, -1
        jmp     .L4
.L3:
        mov     eax, DWORD PTR [rbp-12]
        cmp     eax, DWORD PTR [rbp-16]
        jl      .L5
        mov     eax, 1
        jmp     .L4
.L5:
        mov     eax, DWORD PTR [rbp-12]
        movsx   rdx, eax
        mov     rax, QWORD PTR [rbp-8]
        add     rax, rdx
        movzx   edx, BYTE PTR [rax]
        mov     eax, DWORD PTR [rbp-16]
        movsx   rcx, eax
        mov     rax, QWORD PTR [rbp-8]
        add     rax, rcx
        movzx   eax, BYTE PTR [rax]
        cmp     dl, al
        jne     .L6
        mov     eax, DWORD PTR [rbp-16]
        lea     edx, [rax-1]
        mov     eax, DWORD PTR [rbp-12]
        lea     ecx, [rax+1]
        mov     rax, QWORD PTR [rbp-8]
        mov     esi, ecx
        mov     rdi, rax
        call    isPalindrome(char*, int, int)
        jmp     .L4
.L6:
        mov     eax, -1
.L4:
        leave
        ret

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