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
|
// SPDX-License-Identifier: GPL-2.0
#include <linux/compiler.h>
#include <sys/types.h>
#include <regex.h>
struct arm64_annotate {
regex_t call_insn,
jump_insn;
};
static struct ins_ops *arm64__associate_instruction_ops(struct arch *arch, const char *name)
{
struct arm64_annotate *arm = arch->priv;
struct ins_ops *ops;
regmatch_t match[2];
if (!regexec(&arm->jump_insn, name, 2, match, 0))
ops = &jump_ops;
else if (!regexec(&arm->call_insn, name, 2, match, 0))
ops = &call_ops;
else if (!strcmp(name, "ret"))
ops = &ret_ops;
else
return NULL;
arch__associate_ins_ops(arch, name, ops);
return ops;
}
static int arm64__annotate_init(struct arch *arch, char *cpuid __maybe_unused)
{
struct arm64_annotate *arm;
int err;
if (arch->initialized)
return 0;
arm = zalloc(sizeof(*arm));
if (!arm)
return -1;
/* bl, blr */
err = regcomp(&arm->call_insn, "^blr?$", REG_EXTENDED);
if (err)
goto out_free_arm;
/* b, b.cond, br, cbz/cbnz, tbz/tbnz */
err = regcomp(&arm->jump_insn, "^[ct]?br?\\.?(cc|cs|eq|ge|gt|hi|le|ls|lt|mi|ne|pl)?n?z?$",
REG_EXTENDED);
if (err)
goto out_free_call;
arch->initialized = true;
arch->priv = arm;
arch->associate_instruction_ops = arm64__associate_instruction_ops;
arch->objdump.comment_char = '/';
arch->objdump.skip_functions_char = '+';
return 0;
out_free_call:
regfree(&arm->call_insn);
out_free_arm:
free(arm);
return -1;
}
|
