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TOMOYO Linux Cross Reference
Linux/tools/objtool/warn.h

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  1 /*
  2  * Copyright (C) 2015 Josh Poimboeuf <jpoimboe@redhat.com>
  3  *
  4  * This program is free software; you can redistribute it and/or
  5  * modify it under the terms of the GNU General Public License
  6  * as published by the Free Software Foundation; either version 2
  7  * of the License, or (at your option) any later version.
  8  *
  9  * This program is distributed in the hope that it will be useful,
 10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
 11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 12  * GNU General Public License for more details.
 13  *
 14  * You should have received a copy of the GNU General Public License
 15  * along with this program; if not, see <http://www.gnu.org/licenses/>.
 16  */
 17 
 18 #ifndef _WARN_H
 19 #define _WARN_H
 20 
 21 #include <stdlib.h>
 22 #include <string.h>
 23 #include <sys/types.h>
 24 #include <sys/stat.h>
 25 #include <fcntl.h>
 26 #include "elf.h"
 27 
 28 extern const char *objname;
 29 
 30 static inline char *offstr(struct section *sec, unsigned long offset)
 31 {
 32         struct symbol *func;
 33         char *name, *str;
 34         unsigned long name_off;
 35 
 36         func = find_containing_func(sec, offset);
 37         if (func) {
 38                 name = func->name;
 39                 name_off = offset - func->offset;
 40         } else {
 41                 name = sec->name;
 42                 name_off = offset;
 43         }
 44 
 45         str = malloc(strlen(name) + 20);
 46 
 47         if (func)
 48                 sprintf(str, "%s()+0x%lx", name, name_off);
 49         else
 50                 sprintf(str, "%s+0x%lx", name, name_off);
 51 
 52         return str;
 53 }
 54 
 55 #define WARN(format, ...)                               \
 56         fprintf(stderr,                                 \
 57                 "%s: warning: objtool: " format "\n",   \
 58                 objname, ##__VA_ARGS__)
 59 
 60 #define WARN_FUNC(format, sec, offset, ...)             \
 61 ({                                                      \
 62         char *_str = offstr(sec, offset);               \
 63         WARN("%s: " format, _str, ##__VA_ARGS__);       \
 64         free(_str);                                     \
 65 })
 66 
 67 #define WARN_ELF(format, ...)                           \
 68         WARN(format ": %s", ##__VA_ARGS__, elf_errmsg(-1))
 69 
 70 #endif /* _WARN_H */
 71 

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