1 files changed, 53 insertions, 0 deletions
diff --git a/src/debugpred.h b/src/debugpred.h
new file mode 100644
index 0000000..41d4679
--- /dev/null
+++ b/src/debugpred.h
@@ -0,0 +1,53 @@
+/* Support to debug branch prediction.
+   Copyright (C) 2007 Red Hat, Inc.
+   This file is part of Red Hat elfutils.
+   Written by Ulrich Drepper <drepper@redhat.com>, 2007.
+
+   Red Hat elfutils is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by the
+   Free Software Foundation; version 2 of the License.
+
+   Red Hat elfutils is distributed in the hope that it will be useful, but
+   WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   General Public License for more details.
+
+   You should have received a copy of the GNU General Public License along
+   with Red Hat elfutils; if not, write to the Free Software Foundation,
+   Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301 USA.
+
+   Red Hat elfutils is an included package of the Open Invention Network.
+   An included package of the Open Invention Network is a package for which
+   Open Invention Network licensees cross-license their patents.  No patent
+   license is granted, either expressly or impliedly, by designation as an
+   included package.  Should you wish to participate in the Open Invention
+   Network licensing program, please visit www.openinventionnetwork.com
+   <http://www.openinventionnetwork.com>.  */
+
+#include <stdio.h>
+
+#if DEBUGPRED
+extern const unsigned long int __start_predict_data;
+extern const unsigned long int __stop_predict_data;
+extern const unsigned long int __start_predict_line;
+extern const char *const __start_predict_file;
+
+static void
+__attribute__ ((destructor))
+predprint (void)
+{
+  const unsigned long int *s = &__start_predict_data;
+  const unsigned long int *e = &__stop_predict_data;
+  const unsigned long int *sl = &__start_predict_line;
+  const char *const *sf = &__start_predict_file;
+  while (s < e)
+    {
+      if (s[0] != 0 || s[1] != 0)
+	printf ("%s:%lu: wrong=%lu, correct=%lu%s\n", *sf, *sl, s[0], s[1],
+		s[0] > s[1] ? "   <==== WARNING" : "");
+      ++sl;
+      ++sf;
+      s += 2;
+    }
+}
+#endif