gas: document comments properly

Author: cirosantilli

README.md

@@ -145,7 +145,7 @@ x86 IA-32 and x86-64 userland minimal examples tutorial. Hundreds of runnable as
             1.  [.macro](gas/macro.S)
                 1.  [.altmacro](gas/altmacro.S)
             1.  [.irp](gas/irp.S)
-            1.  [Comments](gas/comments.md)
+            1.  [Comments](gas/comments.S)
         1.  Infrastructure
             1.  [lib_test](gas/lib_test.S)
         1.  [Bibliography](gas/bibliogrpahy.md)

gas/comments.S

@@ -0,0 +1,12 @@
+/* https://stackoverflow.com/questions/15663280/how-to-make-the-gnu-assembler-use-a-slash-for-comments/51991349#51991349 */
+
+#include "lib/common_gas.h"
+
+ENTRY
+    // mycomment
+    # mycomment
+#if 0
+    nop # mycomment
+#endif
+    nop // mycomment
+    EXIT