Ben Cheng | 25b3c04 | 2013-11-20 14:45:36 -0800 | [diff] [blame^] | 1 | /* Support to debug branch prediction. |
| 2 | Copyright (C) 2007 Red Hat, Inc. |
| 3 | This file is part of Red Hat elfutils. |
| 4 | Written by Ulrich Drepper <drepper@redhat.com>, 2007. |
| 5 | |
| 6 | Red Hat elfutils is free software; you can redistribute it and/or modify |
| 7 | it under the terms of the GNU General Public License as published by the |
| 8 | Free Software Foundation; version 2 of the License. |
| 9 | |
| 10 | Red Hat elfutils is distributed in the hope that it will be useful, but |
| 11 | WITHOUT ANY WARRANTY; without even the implied warranty of |
| 12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 13 | General Public License for more details. |
| 14 | |
| 15 | You should have received a copy of the GNU General Public License along |
| 16 | with Red Hat elfutils; if not, write to the Free Software Foundation, |
| 17 | Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301 USA. |
| 18 | |
| 19 | Red Hat elfutils is an included package of the Open Invention Network. |
| 20 | An included package of the Open Invention Network is a package for which |
| 21 | Open Invention Network licensees cross-license their patents. No patent |
| 22 | license is granted, either expressly or impliedly, by designation as an |
| 23 | included package. Should you wish to participate in the Open Invention |
| 24 | Network licensing program, please visit www.openinventionnetwork.com |
| 25 | <http://www.openinventionnetwork.com>. */ |
| 26 | |
| 27 | #include <stdio.h> |
| 28 | |
| 29 | #if DEBUGPRED |
| 30 | extern const unsigned long int __start_predict_data; |
| 31 | extern const unsigned long int __stop_predict_data; |
| 32 | extern const unsigned long int __start_predict_line; |
| 33 | extern const char *const __start_predict_file; |
| 34 | |
| 35 | static void |
| 36 | __attribute__ ((destructor)) |
| 37 | predprint (void) |
| 38 | { |
| 39 | const unsigned long int *s = &__start_predict_data; |
| 40 | const unsigned long int *e = &__stop_predict_data; |
| 41 | const unsigned long int *sl = &__start_predict_line; |
| 42 | const char *const *sf = &__start_predict_file; |
| 43 | while (s < e) |
| 44 | { |
| 45 | if (s[0] != 0 || s[1] != 0) |
| 46 | printf ("%s:%lu: wrong=%lu, correct=%lu%s\n", *sf, *sl, s[0], s[1], |
| 47 | s[0] > s[1] ? " <==== WARNING" : ""); |
| 48 | ++sl; |
| 49 | ++sf; |
| 50 | s += 2; |
| 51 | } |
| 52 | } |
| 53 | #endif |