X-Git-Url: https://pintos-os.org/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=src%2Ftests%2Fuserprog%2Fsc-boundary.c;h=28525684d9676c70c4913ef2a4d8c513d2f44009;hb=09bbcd059d4ce05bf6b8da829795409e2da9a899;hp=10340b43f175e929797a15d14bbf2c249c38f3dc;hpb=4ebf33908a571a7cde93fe618902b044e3633cdf;p=pintos-anon

diff --git a/src/tests/userprog/sc-boundary.c b/src/tests/userprog/sc-boundary.c
index 10340b4..2852568 100644
--- a/src/tests/userprog/sc-boundary.c
+++ b/src/tests/userprog/sc-boundary.c
@@ -1,3 +1,6 @@
+/* Invokes a system call with the system call number and its
+   argument on separate pages.  This must work. */
+
 #include <syscall-nr.h>
 #include "tests/userprog/boundary.h"
 #include "tests/lib.h"
@@ -14,6 +17,6 @@ test_main (void)
   p[1] = 42;
 
   /* Invoke the system call. */
-  asm volatile ("mov %%esp, %0; int 0x30" :: "g" (p));
+  asm volatile ("movl %0, %%esp; int $0x30" :: "g" (p));
   fail ("should have called exit(42)");
 }