tools/objtool/include/objtool/check.h

   1 /* SPDX-License-Identifier: GPL-2.0-or-later */
   2 /*
   3  * Copyright (C) 2017 Josh Poimboeuf <jpoimboe@redhat.com>
   4  */
   5
   6 #ifndef _CHECK_H
   7 #define _CHECK_H
   8
   9 #include <stdbool.h>
  10 #include <objtool/cfi.h>
  11 #include <objtool/arch.h>
  12
  13 struct insn_state {
  14         struct cfi_state cfi;
  15         unsigned int uaccess_stack;
  16         bool uaccess;
  17         bool df;
  18         bool noinstr;
  19         s8 instr;
  20 };
  21
  22 struct instruction {
  23         struct list_head list;
  24         struct hlist_node hash;
  25         struct list_head static_call_node;
  26         struct section *sec;
  27         unsigned long offset;
  28         unsigned int len;
  29         enum insn_type type;
  30         unsigned long immediate;
  31         bool dead_end, ignore, ignore_alts;
  32         bool hint;
  33         bool retpoline_safe;
  34         s8 instr;
  35         u8 visited;
  36         u8 ret_offset;
  37         int alt_group;
  38         struct symbol *call_dest;
  39         struct instruction *jump_dest;
  40         struct instruction *first_jump_src;
  41         struct reloc *jump_table;
  42         struct list_head alts;
  43         struct symbol *func;
  44         struct list_head stack_ops;
  45         struct cfi_state cfi;
  46 };
  47
  48 static inline bool is_static_jump(struct instruction *insn)
  49 {
  50         return insn->type == INSN_JUMP_CONDITIONAL ||
  51                insn->type == INSN_JUMP_UNCONDITIONAL;
  52 }
  53
  54 struct instruction *find_insn(struct objtool_file *file,
  55                               struct section *sec, unsigned long offset);
  56
  57 #define for_each_insn(file, insn)                                       \
  58         list_for_each_entry(insn, &file->insn_list, list)
  59
  60 #define sec_for_each_insn(file, sec, insn)                              \
  61         for (insn = find_insn(file, sec, 0);                            \
  62              insn && &insn->list != &file->insn_list &&                 \
  63                         insn->sec == sec;                               \
  64              insn = list_next_entry(insn, list))
  65
  66 #endif /* _CHECK_H */