MPassignment1, Assembly

MPassignment1

; Enter your name as input and print it, using macros, procedure, loops.
; Rakesh Tiwari 3239

%macro print 2
    mov rax, 1
    mov rdi, 1
    mov rsi, %1
    mov rdx, %2
    syscall
%endmacro

%macro scan 2
    mov rax, 0
    mov rdi, 0
    mov rsi, %1
    mov rdx, %2
    syscall
%endmacro

section .data
    mssg1 db "Enter Your number : "
    mssg1_len: equ $-mssg1
    mssg2 db "Your number is : "
    mssg2_len: equ $-mssg2
    err db "Error"
    errlen equ $-err
    newline db 10
    count db 5

section .bss
    num1 resb 17
    temp resb 17
    hex1 resq 5
    
section .text
    global _start
    _start:
    mov rsi, hex1
    mov rcx, 5
    nexts:
        push rcx
        push rsi
        
        print mssg1, mssg1_len
        scan num1, 17
        print newline, 1
        call ascii_hex
        pop rsi
        pop rcx
        mov [rsi], rbx
        add rsi, 8
    loop nexts
    
    mov rsi, hex1
    mov rcx, 5
    nextd:
        mov rbx, [rsi]
        push rcx
        push rsi
        print mssg2, mssg2_len
        call display64
        print newline, 1
        pop rsi
        pop rcx
        add rsi, 8
    loop nextd
    
    mov rax, 60
    mov rdi, 0
    syscall

error:
    print err, errlen
    print newline, 1
    mov rax, 60
    mov rdi, 0
    syscall
    
ascii_hex:
    mov rsi, num1
    mov rax, 0
    mov rbx, 0
    mov rcx, 16
    next:
        rol rbx, 4
        mov al, [rsi]
        
        cmp al, 29H
        jbe error
        cmp al, 47H
        jge error
        cmp al, 40H
        je error
        cmp al, 39H
        jbe sub30h
        sub al, 7H
        sub30h:
            sub al, 30H
        add bl, al
        inc rsi
    loop next
    ret

display64:
    mov rsi, temp
    mov rcx,16
    next1: 
        ROL rbx, 4
        mov al, bl
        AND al, 0FH
        CMP al, 9h
        jbe lab
        ADD al, 7H
        lab:
            ADD al, 30H
        mov [rsi], al
        inc rsi
    loop next1
    print temp, 16
    ret


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