section .data                         ;Data section to declare constants , messages
    m1 db 10,"Hello world!"           ;messge declaration with define byte(dp) 10 for new line
    m2 db 10,"I am Abhishek Masali"
    l1 equ $- m1                      ;length of the message(l1)    
    l2 equ $- m2

section .text                         ;main program section  (code segment we can from outside)
    global _start

_start:

;-----------------------------Print message code ----------------------
    mov rax,1                       ;system call for write (rax = 64 bit registrer)
    mov rdi,1                       ;file handle 1 is stdout
    mov rsi,m1                      ;address of string to output
    mov rdx,l1                      ;number of bytes
    syscall                          ;invoke operating system to do the write

    mov rax,1
    mov rdi,1  
    mov rsi,m2
    mov rdx,l2
    ; syscall
    
;-----------------------------Exit code ----------------------------    

    mov rax, 60                      ;system call fro exit
    mov rdi, 0                       ;exit code 0
    syscall                          ;invokie operating systemto exit