.equ LEN, 6

.section .bss

hello:

.zero LEN

.global _start

.section .text

_start:

mov $hello, %eax

movb $0x48, (%eax) // 'H'

movb $0x65, 1(%eax) // 'e'

movb $0x6c, 2(%eax) // 'l'

movb $0x6c, 3(%eax) // 'l'

movb $0x6f, 4(%eax) // 'o'

movb $0xa, 5(%eax) // LF

pushl $LEN

push %eax

call printlen

pushl $0

call exit

printlen: // void printlen(char* str, int32_t len)

mov $4, %eax // syscall 4: write

mov $1, %ebx // arg0: stdout

mov 4(%esp), %ecx // arg1: buf

mov 8(%esp), %edx // arg2: count

int $0x80 // syscall

ret

exit: // void exit(int32_t code)

mov $1, %eax // syscall 1: exit

mov 4(%esp), %ebx // arg0: err_code

int $0x80 // syscall

ret