STDIN = 0
STDOUT = 1
SYS_EXIT = 1
SYS_WRITE = 4
SYS_READ = 3
EXIT_SUCCESS = 0

.data
    text: .space 10,0
    text_len: .long .-text

.text
    .global _start
    _start:

    	movl $SYS_READ, %eax
    	movl $STDIN, %ebx
    	movl $text, %ecx
    	movl text_len, %edx
    	int $0x80

	movl $0, %edi 			# iterator
	movq %rax, %r8 			# ilosc znakow z stdin

######	movq $0, %rax
	dec %r8

main_loop:

	movl $0, %ebx 			# zerowanie tmp

	movb text(, %edi, 1), %bl 	#znak z bufora do tmp

	subb $0x30, %bl			#ASCII -> hex (dla 0-9)

	cmp $9, %ebx 			# jesli dalej > 9 (czyli znaki A-Z)
	jl next
	subb $0x07, %bl

next:

	addq %rbx, %r9			# r9 - "akumulator"
	shlq $4, %r9

	inc %edi			#nastepna pozycja
	cmp %r8d, %edi
	jl main_loop

end:

	shrq $4, %r9

    mov $SYS_EXIT, %eax
    mov $EXIT_SUCCESS, %ebx
    int $0x80