Add another example

examples/label_loop.asmsh

@@ -0,0 +1,18 @@
+mov $27, %rcx
+.label print
+push %rcx
+mov $27, %rbx
+sub %rcx, %rbx
+add $0x0a40, %rbx
+push %rbx
+mov $1, %rax
+mov %rsp, %rsi
+mov $2, %rdx
+syscall
+
+pop %rbx
+pop %rcx
+.breakpoint after loop @print
+
+.run
+.quit