asgn8.asm

%macro print 2
    mov rax,01
    mov rdi,01
    mov rsi,%1
    mov rdx,%2
    syscall
%endmacro
 
section .data

	array db 10h,20h,30h,40h,50h

	msg1: db 'Before Non-Overlap :',0xa
	len1: equ $-msg1

	msg2: db 'After Non-Overlap :',0xa
	len2: equ $-msg2

	msg3: db ' ',0xa
	len3: equ $-msg3

	msg4: db ' : '
	len4: equ $-msg4

	count db 0
	count1 db 0
	count2 db 0
	count3 db 0
	count4  db 0
	count5  db 0
 
section .bss
	addr resb 16
	num1 resb 2
       

section .text
global _start

_start:
	print msg1, len1

        xor rsi,rsi

	mov rsi,array
	mov byte[count],05

up:
	mov rbx,rsi
	push rsi
	mov rdi,addr
	call HtoA1
	pop rsi

	mov dl,[rsi]
	push rsi
	mov rdi,num1
	call HtoA2
	pop rsi

	inc rsi

	dec byte[count]
	jnz up

	mov rsi,array
	mov rdi,array+05h
	mov byte[count3],05h

loop10:
	mov dl,00h
	movsb
	dec byte[count3]
	jnz loop10

	xor rsi,rsi

	mov rsi,array
	mov rdi,array+05h
	mov byte[count5],05h

loop11:

	mov dl,byte[rdi]
	mov byte[rsi],dl
	inc rsi
	inc rdi
	dec byte[count5]
	jnz loop11
	
	print msg2, len2

        xor rsi,rsi
        mov rsi,array
        mov byte[count4],0Ah

up10:
	mov rbx,rsi
	push rsi
	mov rdi,addr
	call HtoA1
	pop rsi

	mov dl,[rsi]
	push rsi
	mov rdi,num1
	call HtoA2
	pop rsi

	inc rsi

	dec byte[count4]
	jnz up10
               
Exit:
	mov rax,60
	mov rdx,00
	syscall 
	
; ================ SUBROUTINES ==========================

HtoA1:
	mov byte[count1],16
 
	dup1:
	rol rbx,4
	mov al,bl
	and al,0fh
	cmp al,09
	jg p3
	add al,30h
	jmp p4
	
	p3: add al,37h
	
	p4:mov [rdi],al
	inc rdi
	dec byte[count1]
	jnz dup1

	print addr,16
	
	print msg4, len4
 
	ret	

HtoA2:
	mov byte[count2],02

	dup2:

	rol dl,04
	mov al,dl
	and al,0fh
	cmp al,09h
	jg p31
	add al,30h
	jmp p41

	p31: add al,37h
	p41:mov [rdi],al

	inc rdi
	dec byte[count2]
	jnz dup2

	print num1, 02

	print msg3, len3

	ret

; code at home/desktop/21226
;10,13 represents next line    
;equ replaces the the code by that block
;bss block section size --> that does dynamic input thats not initialised

;codes to run the file are
;save file as abc.asm
;open the location and open folder in terminal where file is saved\
;type command    nams -f elf64 asgn7.asm
;type ls     
;check asgn1.o file is created or not
;type ld -o file asgn7.o
;type ls
;check in green the file is created or not
;type ./file and run