tools/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 "elf.h"
  11 #include "cfi.h"
  12 #include "arch.h"
  13 #include "orc.h"
  14 #include <linux/hashtable.h>
  15
  16 struct insn_state {
  17         struct cfi_reg cfa;
  18         struct cfi_reg regs[CFI_NUM_REGS];
  19         int stack_size;
  20         unsigned char type;
  21         bool bp_scratch;
  22         bool drap, end, uaccess, df;
  23         unsigned int uaccess_stack;
  24         int drap_reg, drap_offset;
  25         struct cfi_reg vals[CFI_NUM_REGS];
  26 };
  27
  28 struct instruction {
  29         struct list_head list;
  30         struct hlist_node hash;
  31         struct section *sec;
  32         unsigned long offset;
  33         unsigned int len;
  34         enum insn_type type;
  35         unsigned long immediate;
  36         bool alt_group, dead_end, ignore, hint, save, restore, ignore_alts;
  37         bool retpoline_safe;
  38         u8 visited;
  39         struct symbol *call_dest;
  40         struct instruction *jump_dest;
  41         struct instruction *first_jump_src;
  42         struct rela *jump_table;
  43         struct list_head alts;
  44         struct symbol *func;
  45         struct stack_op stack_op;
  46         struct insn_state state;
  47         struct orc_entry orc;
  48 };
  49
  50 struct objtool_file {
  51         struct elf *elf;
  52         struct list_head insn_list;
  53         DECLARE_HASHTABLE(insn_hash, 16);
  54         bool ignore_unreachables, c_file, hints, rodata;
  55 };
  56
  57 int check(const char *objname, bool orc);
  58
  59 struct instruction *find_insn(struct objtool_file *file,
  60                               struct section *sec, unsigned long offset);
  61
  62 #define for_each_insn(file, insn)                                       \
  63         list_for_each_entry(insn, &file->insn_list, list)
  64
  65 #define sec_for_each_insn(file, sec, insn)                              \
  66         for (insn = find_insn(file, sec, 0);                            \
  67              insn && &insn->list != &file->insn_list &&                 \
  68                         insn->sec == sec;                               \
  69              insn = list_next_entry(insn, list))
  70
  71
  72 #endif /* _CHECK_H */