1 /* Support to debug branch prediction. 2 Copyright (C) 2007 Red Hat, Inc. 3 This file is part of elfutils. 4 Written by Ulrich Drepper <drepper (at) redhat.com>, 2007. 5 6 This file is free software; you can redistribute it and/or modify 7 it under the terms of the GNU General Public License as published by 8 the Free Software Foundation; either version 3 of the License, or 9 (at your option) any later version. 10 11 elfutils is distributed in the hope that it will be useful, but 12 WITHOUT ANY WARRANTY; without even the implied warranty of 13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14 GNU General Public License for more details. 15 16 You should have received a copy of the GNU General Public License 17 along with this program. If not, see <http://www.gnu.org/licenses/>. */ 18 19 #include <stdio.h> 20 21 #if DEBUGPRED 22 extern const unsigned long int __start_predict_data; 23 extern const unsigned long int __stop_predict_data; 24 extern const unsigned long int __start_predict_line; 25 extern const char *const __start_predict_file; 26 27 static void 28 __attribute__ ((destructor)) 29 predprint (void) 30 { 31 const unsigned long int *s = &__start_predict_data; 32 const unsigned long int *e = &__stop_predict_data; 33 const unsigned long int *sl = &__start_predict_line; 34 const char *const *sf = &__start_predict_file; 35 while (s < e) 36 { 37 if (s[0] != 0 || s[1] != 0) 38 printf ("%s:%lu: wrong=%lu, correct=%lu%s\n", *sf, *sl, s[0], s[1], 39 s[0] > s[1] ? " <==== WARNING" : ""); 40 ++sl; 41 ++sf; 42 s += 2; 43 } 44 } 45 #endif 46
