initial commit v2

hello.s

@@ -0,0 +1,16 @@
+BITS 64
+GLOBAL _start
+SECTION .text
+msg:	db "Hello, World!"
+len:	equ $-msg
+_start:
+	; initialize stuff for `write` syscall
+	mov rax, 1 ; write
+	mov rdi, 1 ; fd 1 (stdout)
+	mov rsi, $msg ; write from `msg`
+	mov rdx, $len ; write `len` bytes
+	syscall
+	; exit
+	mov rax, 60
+	mov rdi, 0
+	syscall