add more modes

demo/kitchen-sink/docs/assembly_x86.asm

@@ -0,0 +1,18 @@
+section	.text
+    global main         ;must be declared for using gcc
+
+main:	                ;tell linker entry point
+
+	mov	edx, len	    ;message length
+	mov	ecx, msg	    ;message to write
+	mov	ebx, 1	        ;file descriptor (stdout)
+	mov	eax, 4	        ;system call number (sys_write)
+	int	0x80	        ;call kernel
+
+	mov	eax, 1	        ;system call number (sys_exit)
+	int	0x80	        ;call kernel
+
+section	.data
+
+msg	db	'Hello, world!',0xa	;our dear string
+len	equ	$ - msg			;length of our dear string