Question

Please Write the whole program in assembly i am able to calculate the fibonacci series but not sure how to print it in reverse order. Please give a Complete code !!

Programming Exercise 1 (10 points): [call it Ass2-Q1.asm] Write an ASM program that reads an integer number N and then displays the first N values of the Fibonacci number sequence, described by: Fib(0) = 0, Fib(1) = 1, Fib(N) = Fib(N-2) + Fib(N-1)

Thus, if the input is N = 10, your program Ass1-Q1.exe should display the following single line:

Fibonacci sequence with N = 10 is: 55 34 21 13 8 5 3 2 1 1 0

Note: the Fibonacci sequence should be displayed in the order given above…

Answer 1

.LC0:
        .string " "
reverseFibonacci(int):
        push    rbp
        mov     rbp, rsp
        push    rbx
        sub     rsp, 56
        mov     DWORD PTR [rbp-52], edi
        mov     rax, rsp
        mov     rbx, rax
        mov     eax, DWORD PTR [rbp-52]
        cdqe
        sub     rax, 1
        mov     QWORD PTR [rbp-32], rax
        mov     rdx, rax
        add     rdx, 1
        mov     r10, rdx
        mov     r11d, 0
        mov     rdx, rax
        add     rdx, 1
        mov     r8, rdx
        mov     r9d, 0
        add     rax, 1
        lea     rdx, [0+rax*4]
        mov     eax, 16
        sub     rax, 1
        add     rax, rdx
        mov     esi, 16
        mov     edx, 0
        div     rsi
        imul    rax, rax, 16
        sub     rsp, rax
        mov     rax, rsp
        add     rax, 3
        shr     rax, 2
        sal     rax, 2
        mov     QWORD PTR [rbp-40], rax
        mov     rax, QWORD PTR [rbp-40]
        mov     DWORD PTR [rax], 0
        mov     rax, QWORD PTR [rbp-40]
        mov     DWORD PTR [rax+4], 1
        mov     DWORD PTR [rbp-24], 2
.L3:
        mov     eax, DWORD PTR [rbp-24]
        cmp     eax, DWORD PTR [rbp-52]
        jge     .L2
        mov     eax, DWORD PTR [rbp-24]
        lea     edx, [rax-2]
        mov     rax, QWORD PTR [rbp-40]
        movsx   rdx, edx
        mov     ecx, DWORD PTR [rax+rdx*4]
        mov     eax, DWORD PTR [rbp-24]
        lea     edx, [rax-1]
        mov     rax, QWORD PTR [rbp-40]
        movsx   rdx, edx
        mov     eax, DWORD PTR [rax+rdx*4]
        add     ecx, eax
        mov     rax, QWORD PTR [rbp-40]
        mov     edx, DWORD PTR [rbp-24]
        movsx   rdx, edx
        mov     DWORD PTR [rax+rdx*4], ecx
        add     DWORD PTR [rbp-24], 1
        jmp     .L3
.L2:
        mov     eax, DWORD PTR [rbp-52]
        sub     eax, 1
        mov     DWORD PTR [rbp-20], eax
.L5:
        cmp     DWORD PTR [rbp-20], 0
        js      .L4
        mov     rax, QWORD PTR [rbp-40]
        mov     edx, DWORD PTR [rbp-20]
        movsx   rdx, edx
        mov     eax, DWORD PTR [rax+rdx*4]
        mov     esi, eax
        mov     edi, OFFSET FLAT:_ZSt4cout
        call    std::basic_ostream<char, std::char_traits<char> >::operator<<(int)
        mov     esi, OFFSET FLAT:.LC0
        mov     rdi, rax
        call    std::basic_ostream<char, std::char_traits<char> >& std::operator<< <std::char_traits<char> >(std::basic_ostream<char, std::char_traits<char> >&, char const*)
        sub     DWORD PTR [rbp-20], 1
        jmp     .L5
.L4:
        mov     rsp, rbx
        nop
        mov     rbx, QWORD PTR [rbp-8]
        leave
        ret
main:
        push    rbp
        mov     rbp, rsp
        sub     rsp, 16
        mov     DWORD PTR [rbp-4], 10
        mov     eax, DWORD PTR [rbp-4]
        mov     edi, eax
        call    reverseFibonacci(int)
        mov     eax, 0
        leave
        ret
__static_initialization_and_destruction_0(int, int):
        push    rbp
        mov     rbp, rsp
        sub     rsp, 16
        mov     DWORD PTR [rbp-4], edi
        mov     DWORD PTR [rbp-8], esi
        cmp     DWORD PTR [rbp-4], 1
        jne     .L10
        cmp     DWORD PTR [rbp-8], 65535
        jne     .L10
        mov     edi, OFFSET FLAT:_ZStL8__ioinit
        call    std::ios_base::Init::Init() [complete object constructor]
        mov     edx, OFFSET FLAT:__dso_handle
        mov     esi, OFFSET FLAT:_ZStL8__ioinit
        mov     edi, OFFSET FLAT:_ZNSt8ios_base4InitD1Ev
        call    __cxa_atexit
.L10:
        nop
        leave
        ret
_GLOBAL__sub_I_reverseFibonacci(int):
        push    rbp
        mov     rbp, rsp
        mov     esi, 65535
        mov     edi, 1
        call    __static_initialization_and_destruction_0(int, int)
        pop     rbp
        ret

x86-64 gcc 10.2 compiler