xref: /aosp_15_r20/external/elfutils/src/debugpred.h (revision 7304104da70ce23c86437a01be71edd1a2d7f37e)
1*7304104dSAndroid Build Coastguard Worker /* Support to debug branch prediction.
2*7304104dSAndroid Build Coastguard Worker    Copyright (C) 2007 Red Hat, Inc.
3*7304104dSAndroid Build Coastguard Worker    This file is part of elfutils.
4*7304104dSAndroid Build Coastguard Worker    Written by Ulrich Drepper <[email protected]>, 2007.
5*7304104dSAndroid Build Coastguard Worker 
6*7304104dSAndroid Build Coastguard Worker    This file is free software; you can redistribute it and/or modify
7*7304104dSAndroid Build Coastguard Worker    it under the terms of the GNU General Public License as published by
8*7304104dSAndroid Build Coastguard Worker    the Free Software Foundation; either version 3 of the License, or
9*7304104dSAndroid Build Coastguard Worker    (at your option) any later version.
10*7304104dSAndroid Build Coastguard Worker 
11*7304104dSAndroid Build Coastguard Worker    elfutils is distributed in the hope that it will be useful, but
12*7304104dSAndroid Build Coastguard Worker    WITHOUT ANY WARRANTY; without even the implied warranty of
13*7304104dSAndroid Build Coastguard Worker    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
14*7304104dSAndroid Build Coastguard Worker    GNU General Public License for more details.
15*7304104dSAndroid Build Coastguard Worker 
16*7304104dSAndroid Build Coastguard Worker    You should have received a copy of the GNU General Public License
17*7304104dSAndroid Build Coastguard Worker    along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
18*7304104dSAndroid Build Coastguard Worker 
19*7304104dSAndroid Build Coastguard Worker #include <stdio.h>
20*7304104dSAndroid Build Coastguard Worker 
21*7304104dSAndroid Build Coastguard Worker #if DEBUGPRED
22*7304104dSAndroid Build Coastguard Worker extern const unsigned long int __start_predict_data;
23*7304104dSAndroid Build Coastguard Worker extern const unsigned long int __stop_predict_data;
24*7304104dSAndroid Build Coastguard Worker extern const unsigned long int __start_predict_line;
25*7304104dSAndroid Build Coastguard Worker extern const char *const __start_predict_file;
26*7304104dSAndroid Build Coastguard Worker 
27*7304104dSAndroid Build Coastguard Worker static void
28*7304104dSAndroid Build Coastguard Worker __attribute__ ((destructor))
predprint(void)29*7304104dSAndroid Build Coastguard Worker predprint (void)
30*7304104dSAndroid Build Coastguard Worker {
31*7304104dSAndroid Build Coastguard Worker   const unsigned long int *s = &__start_predict_data;
32*7304104dSAndroid Build Coastguard Worker   const unsigned long int *e = &__stop_predict_data;
33*7304104dSAndroid Build Coastguard Worker   const unsigned long int *sl = &__start_predict_line;
34*7304104dSAndroid Build Coastguard Worker   const char *const *sf = &__start_predict_file;
35*7304104dSAndroid Build Coastguard Worker   while (s < e)
36*7304104dSAndroid Build Coastguard Worker     {
37*7304104dSAndroid Build Coastguard Worker       if (s[0] != 0 || s[1] != 0)
38*7304104dSAndroid Build Coastguard Worker 	printf ("%s:%lu: wrong=%lu, correct=%lu%s\n", *sf, *sl, s[0], s[1],
39*7304104dSAndroid Build Coastguard Worker 		s[0] > s[1] ? "   <==== WARNING" : "");
40*7304104dSAndroid Build Coastguard Worker       ++sl;
41*7304104dSAndroid Build Coastguard Worker       ++sf;
42*7304104dSAndroid Build Coastguard Worker       s += 2;
43*7304104dSAndroid Build Coastguard Worker     }
44*7304104dSAndroid Build Coastguard Worker }
45*7304104dSAndroid Build Coastguard Worker #endif
46