section .text
global main

main:
        push    prompt1             ; push prompt1
        push    prompt1Len          ; push length
        call    print               ; call print

        call    read                ; call read

        mov     esi, str
        sub     byte [esi], 0x30

        push    prompt2             ; push prompt1
        push    prompt2Len          ; push length
        call    print               ; call print

        call    read
        mov     edi, str
        sub     byte [edi], 0x30

        push    esi                 ; push int val of input
        push    eax                 ; push num of read bytes

        call    print               ; print

        ; close
        mov     eax, 1
        mov     ebx, 0
        int     0x80

print:
        push    ebp
        mov     ebp, esp

        mov     edx, [ebp+8]
        mov     ecx, [ebp+12]
        mov     eax, 4
        mov     ebx, 1
        int     0x80
        mov     esp, ebp
        pop     ebp
        ret

read:
        push    ebp
        mov     ebp, esp

        mov     eax, 3
        mov     ebx, 0
        mov     ecx, str
        mov     edx, 100
        int     0x80

        mov     esp, ebp
        pop     ebp
        ret

stringlen:
        push    ebp
        mov     ebp, esp                ;pre amble

        mov     ecx, [ebp + 8]

        xor     eax, eax                ; length

startLoop:
        xor     edx, edx
        mov     dl, byte[ecx]
        inc     eax

        cmp     dl, 0x0                 ; check for \0
        je      end                     ; restart loop if not \0
        cmp     dl, 'a'
        jb      next
        cmp     dl, 'z'
        ja      next
        sub     dl, 0x20
        mov     [ecx], dl

next:
        inc     ecx
        jmp     startLoop

end:
        inc ecx
        mov     byte[ecx], 0xa
        inc eax
        pop     ebp
        ret

section .data
        str:    times   100     db  0             ; allocate 100 byte buffer
        lf:     db      10                   ; new line for full buffer
        prompt1 db      'Enter first Number: '
        prompt1Len equ $-prompt1
        prompt2 db      'Enter second Number: '
        prompt2Len equ $-prompt2



all = numberequ

numberequ: numberequ.o
    gcc -m32 -o numberequ numberequ.o

numberequ.o: numberequ.asm
    nasm -f elf32 -g numberequ.asm

clean:
    rm -rf *.o numberequ



section .text
global main

main:
        mov     eax, [esp + 0x08]       ; get argv ptr
        mov     esi, [eax + 0x04]       ; get argv[1]

        push    esi                     ; push string for strlen
        call    stringlen               ; call string length

        push    eax                     ; push string length for print

        call    print

        ; sys_exit
        mov    eax, 1
        int    0x80

print:
        push    ebp
        mov     ebp, esp

        mov     edx, [ebp+8]
        mov     ecx, [ebp+12]
        mov     eax, 4
        mov     ebx, 1
        int     0x80
        pop     ebp
        ret

stringlen:
        push    ebp
        mov     ebp, esp                ;pre amble

        mov     ecx, [ebp + 8]

        xor     eax, eax                ; length

startLoop:
        xor     edx, edx
        mov     dl, byte[ecx]
        inc     eax

        cmp     dl, 0x0                 ; check for \0
        je      end                     ; restart loop if not \0
        cmp     dl, 'a'
        jb      next
        cmp     dl, 'z'
        ja      next
        sub     dl, 0x20
        mov     [ecx], dl

next:
        inc     ecx
        jmp     startLoop

end:
        inc ecx
        mov     byte[ecx], 0xa
        inc eax
        pop     ebp
        ret



all = lowertoupper

lowertoupper: lowertoupper.o
    gcc -m32 -o lowertoupper lowertoupper.o

lowertoupper.o: lowertoupper.asm
    nasm -f elf32 -g lowertoupper.asm

clean:
    rm -rf *.o lowertoupper