X-Git-Url: http://drtracing.org/?a=blobdiff_plain;f=gdb%2Ftestsuite%2Fgdb.reverse%2Finsn-reverse.c;h=b3881d44251cd168cc4ac81808f13396f92efadd;hb=9c027c2f6c5cdb3db0b8c72c06b691c5ba502279;hp=08d382d080b49bbca06246159db452aa10012607;hpb=c524d11e50729ac1a14ac1e749d9a5c459881391;p=deliverable%2Fbinutils-gdb.git

diff --git a/gdb/testsuite/gdb.reverse/insn-reverse.c b/gdb/testsuite/gdb.reverse/insn-reverse.c
index 08d382d080..b3881d4425 100644
--- a/gdb/testsuite/gdb.reverse/insn-reverse.c
+++ b/gdb/testsuite/gdb.reverse/insn-reverse.c
@@ -15,6 +15,9 @@
    You should have received a copy of the GNU General Public License
    along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
 
+#include <stdlib.h>
+#include <stdio.h>
+
 typedef void (*testcase_ftype) (void);
 
 /* The arch-specific files need to implement both the initialize function
@@ -45,16 +48,48 @@ initialize (void)
    array is defined together with them.  */
 static int n_testcases = (sizeof (testcases) / sizeof (testcase_ftype));
 
+static void
+usage (void)
+{
+  printf ("usage: insn-reverse <0-%d>\n", n_testcases - 1);
+}
+
+static int test_nr;
+
+static void
+parse_args (int argc, char **argv)
+{
+  if (argc != 2)
+    {
+      usage ();
+      exit (1);
+    }
+
+  char *tail;
+  test_nr = strtol (argv[1], &tail, 10);
+  if (*tail != '\0')
+    {
+      usage ();
+      exit (1);
+    }
+
+  int in_range_p = 0 <= test_nr && test_nr < n_testcases;
+  if (!in_range_p)
+    {
+      usage ();
+      exit (1);
+    }
+}
+
 int
-main ()
+main (int argc, char **argv)
 {
-  int i = 0;
+  parse_args (argc, argv);
 
   /* Initialize any required arch-specific bits.  */
   initialize ();
 
-  for (i = 0; i < n_testcases; i++)
-    testcases[i] ();
+  testcases[test_nr] ();
 
   return 0;
 }