1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
|
/* SPDX-License-Identifier: GPL-2.0-or-later */
/*
* Copyright (C) 2017 Josh Poimboeuf <jpoimboe@redhat.com>
*/
#ifndef _CHECK_H
#define _CHECK_H
#include <stdbool.h>
#include "cfi.h"
#include "arch.h"
struct insn_state {
struct cfi_state cfi;
unsigned int uaccess_stack;
bool uaccess;
bool df;
bool noinstr;
s8 instr;
};
struct alt_group {
/*
* Pointer from a replacement group to the original group. NULL if it
* *is* the original group.
*/
struct alt_group *orig_group;
/* First and last instructions in the group */
struct instruction *first_insn, *last_insn;
/*
* Byte-offset-addressed len-sized array of pointers to CFI structs.
* This is shared with the other alt_groups in the same alternative.
*/
struct cfi_state **cfi;
};
struct instruction {
struct list_head list;
struct hlist_node hash;
struct list_head call_node;
struct section *sec;
unsigned long offset;
unsigned int len;
enum insn_type type;
unsigned long immediate;
bool dead_end, ignore, ignore_alts;
bool hint;
bool save, restore;
bool retpoline_safe;
bool entry;
s8 instr;
u8 visited;
struct alt_group *alt_group;
struct symbol *call_dest;
struct instruction *jump_dest;
struct instruction *first_jump_src;
struct reloc *jump_table;
struct reloc *reloc;
struct list_head alts;
struct symbol *func;
struct list_head stack_ops;
struct cfi_state *cfi;
};
#define VISITED_BRANCH 0x01
#define VISITED_BRANCH_UACCESS 0x02
#define VISITED_BRANCH_MASK 0x03
#define VISITED_ENTRY 0x04
static inline bool is_static_jump(struct instruction *insn)
{
return insn->type == INSN_JUMP_CONDITIONAL ||
insn->type == INSN_JUMP_UNCONDITIONAL;
}
static inline bool is_dynamic_jump(struct instruction *insn)
{
return insn->type == INSN_JUMP_DYNAMIC ||
insn->type == INSN_JUMP_DYNAMIC_CONDITIONAL;
}
static inline bool is_jump(struct instruction *insn)
{
return is_static_jump(insn) || is_dynamic_jump(insn);
}
struct instruction *find_insn(struct objtool_file *file,
struct section *sec, unsigned long offset);
#define for_each_insn(file, insn) \
list_for_each_entry(insn, &file->insn_list, list)
#define sec_for_each_insn(file, sec, insn) \
for (insn = find_insn(file, sec, 0); \
insn && &insn->list != &file->insn_list && \
insn->sec == sec; \
insn = list_next_entry(insn, list))
#endif /* _CHECK_H */
|
