Question

##Notice: write in HLA code

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Create an HLA Assembly language program that prompts for a single integer value from the user and prints an boxy pattern like the one shown below. If the number is negative, don't print anything at all.

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Here are some example program dialogues to guide your efforts:

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Feed Me: 5
55555
5 5
5 5
5 5
55555

Feed Me: -6

Feed Me: 3
333
3 3
333

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In an effort to help you focus on building an Assembly program, I’d like to offer you the following C statements matches the program specifications stated above. If you like, use them as the basis for building your Assembly program.

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SAMPLE C CODE:
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int i, n, j;
printf( "Feed Me:" );
scanf( "%d", &n );

for (i=1; i<=n; i++) {
if (i == 1 || i == n) { // first or last row
for (j = 1; j <= n; j++) {
printf( "%d", n );
}
printf( "\n" );
}
else { // internal rows of the box
printf( "%d", n );
for (j = 1; j <= n-2; j++) {
printf( " " );
}
printf( "%d", n );
printf( "\n" );
}

}

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##Answer the questinon in HLA Assembly language program.

Answer 1

The code is as follows:

.LC0:
        .string "Feed Me:"
.LC1:
        .string "%d"
main:
        push    rbp
        mov     rbp, rsp
        sub     rsp, 16
        mov     edi, OFFSET FLAT:.LC0
        mov     eax, 0
        call    printf
        lea     rax, [rbp-12]
        mov     rsi, rax
        mov     edi, OFFSET FLAT:.LC1
        mov     eax, 0
        call    scanf
        mov     eax, DWORD PTR [rbp-12]
        test    eax, eax
        js      .L15
        mov     DWORD PTR [rbp-4], 1
        jmp     .L4
.L12:
        cmp     DWORD PTR [rbp-4], 1
        je      .L5
        mov     eax, DWORD PTR [rbp-12]
        cmp     DWORD PTR [rbp-4], eax
        jne     .L6
.L5:
        mov     DWORD PTR [rbp-8], 1
        jmp     .L7
.L8:
        mov     eax, DWORD PTR [rbp-12]
        mov     esi, eax
        mov     edi, OFFSET FLAT:.LC1
        mov     eax, 0
        call    printf
        add     DWORD PTR [rbp-8], 1
.L7:
        mov     eax, DWORD PTR [rbp-12]
        cmp     DWORD PTR [rbp-8], eax
        jle     .L8
        mov     edi, 10
        call    putchar
        jmp     .L9
.L6:
        mov     eax, DWORD PTR [rbp-12]
        mov     esi, eax
        mov     edi, OFFSET FLAT:.LC1
        mov     eax, 0
        call    printf
        mov     DWORD PTR [rbp-8], 1
        jmp     .L10
.L11:
        mov     edi, 32
        call    putchar
        add     DWORD PTR [rbp-8], 1
.L10:
        mov     eax, DWORD PTR [rbp-12]
        sub     eax, 1
        cmp     DWORD PTR [rbp-8], eax
        jl      .L11
        mov     eax, DWORD PTR [rbp-12]
        mov     esi, eax
        mov     edi, OFFSET FLAT:.LC1
        mov     eax, 0
        call    printf
        mov     edi, 10
        call    putchar
.L9:
        add     DWORD PTR [rbp-4], 1
.L4:
        mov     eax, DWORD PTR [rbp-12]
        cmp     DWORD PTR [rbp-4], eax
        jle     .L12
        mov     eax, 0
        jmp     .L1
.L15:
        nop
        nop
.L1:
        leave
        ret