Add explanatory comments to vm tests.

[pintos-anon] / src / tests / vm / pt-grow-pusha.c

diff --git a/src/tests/vm/pt-grow-pusha.c b/src/tests/vm/pt-grow-pusha.c
index 759688066c05464eba2dc19f7f21264c6c6b4328..b6b165fa185e9d29cb469df9517748d95d469821 100644 (file)
--- a/src/tests/vm/pt-grow-pusha.c
+++ b/src/tests/vm/pt-grow-pusha.c
@@ -1,3 +1,7 @@
+/* Expand the stack by 32 bytes all at once using the PUSHA
+   instruction.
+   This must succeed. */
+
 #include <string.h>
 #include "tests/arc4.h"
 #include "tests/cksum.h"