SYSCALL32 = 0x80
EXIT = 1
STDIN = 0
READ = 3
BUF_SIZE = 10
HexDistance = 'a' - 10
WRITE = 4
STDOUT = 1
.data
BUF: .space BUF_SIZE, 0
.text
.globl _start
_start:
	movl $BUF_SIZE, %edx
	movl $BUF, %ecx
	movl $STDIN, %ebx
	movl $READ, %eax
	int $SYSCALL32
	movl %eax, %esi
	dec %esi
	dec %esi
	movl $0, %edi
convert:
	movb BUF(,%edi,1), %bl
	cmpb $'9', %bl
	jg subHex
	sub $'0',%bl
	jmp setValue
subHex:
	sub $HexDistance,%bl
setValue:
	movb %bl, BUF(,%edi,1)
	cmp %eax, %edi
	jge setRegister
	inc %edi
	jmp convert
setRegister:
	mov $0,%edi
	xor %eax, %eax
setValueInRegister:
	movb BUF(,%edi,1), %bl
	or %bl,%al
#	shl $4, %rax
	cmpl %esi, %edi
	je koniec
	shl $4, %eax
	inc %edi
	jmp setValueInRegister
koniec:
#	shr $4, %rax
	movl $EXIT, %eax
	int $SYSCALL32