/* hello-amd64.S : example of using int 0x80 to do Linux syscalls */
/*
 * gcc -nostdlib -static hello-amd64.S -o hello
 */
#define STDIN_FILENO 0
#define STDOUT_FILENO 1
#define STDERR_FILENO 2
#define SYS_EXIT 60
#define SYS_WRITE 1

.text
.globl _start
_start:
	mov $SYS_WRITE, %rax
	mov $STDOUT_FILENO, %rdi
	mov $hello_world, %rsi
	mov $hello_world_len, %rdx
	syscall
	mov $SYS_EXIT, %rax
	xor %rdi, %rdi
	syscall

1:
	hlt
	jmp 1b

.data

hello_world:
	.ascii "Hello World\n"
hello_world_len = . - hello_world