tools/objtool/check.h

   1 /*
   2  * Copyright (C) 2017 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 _CHECK_H
  19 #define _CHECK_H
  20
  21 #include <stdbool.h>
  22 #include "elf.h"
  23 #include "cfi.h"
  24 #include "arch.h"
  25 #include <linux/hashtable.h>
  26
  27 struct insn_state {
  28         struct cfi_reg cfa;
  29         struct cfi_reg regs[CFI_NUM_REGS];
  30         int stack_size;
  31         bool bp_scratch;
  32         bool drap;
  33         int drap_reg;
  34 };
  35
  36 struct instruction {
  37         struct list_head list;
  38         struct hlist_node hash;
  39         struct section *sec;
  40         unsigned long offset;
  41         unsigned int len;
  42         unsigned char type;
  43         unsigned long immediate;
  44         bool alt_group, visited, dead_end, ignore;
  45         struct symbol *call_dest;
  46         struct instruction *jump_dest;
  47         struct list_head alts;
  48         struct symbol *func;
  49         struct stack_op stack_op;
  50         struct insn_state state;
  51 };
  52
  53 struct objtool_file {
  54         struct elf *elf;
  55         struct list_head insn_list;
  56         DECLARE_HASHTABLE(insn_hash, 16);
  57         struct section *rodata, *whitelist;
  58         bool ignore_unreachables, c_file;
  59 };
  60
  61 int check(const char *objname, bool nofp);
  62
  63 #define for_each_insn(file, insn)                                       \
  64         list_for_each_entry(insn, &file->insn_list, list)
  65
  66 #endif /* _CHECK_H */