create userland tests

Fix some more tabs.

Parse the "Simulated exit code not 0!" string in gem5 and exit with the proper status

baremetal/interactive/assert_fail.c

@@ -1,6 +1,6 @@
 #include <common.h>
 
 int main(void) {
-	common_assert_fail();
+    common_assert_fail();
 }