Syntax: Assembler


.text
	.global _start

_start:
	# ssize_t sys_write(unsigned int fd, const char __user * buf, size_t count)
	movl  $len, %edx    # size_t count
	movl  $msg, %ecx    # const char __user * buf
	movl  $1,   %ebx    # unsigned int fd
	movl  $4,   %eax    # system call number (sys_write)
	int   $0x80         # call kernel

	# void _exit(int status);
	movl  $0,   %ebx    # int status
	movl  $1,   %eax    # system call number (sys_exit)
	int   $0x80         # call kernel

.data

msg:
	.ascii "Hello, world!\n"
	len = . - msg