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, 20);
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 */
73
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