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Linux 5.1.15
[linux/fpc-iii.git] / tools / perf / arch / arm64 / annotate / instructions.c
blob8f70a1b282dfbc25edde9a0f133542e2411cedd4
1 // SPDX-License-Identifier: GPL-2.0
2 #include <linux/compiler.h>
3 #include <sys/types.h>
4 #include <regex.h>
5
6 struct arm64_annotate {
7 regex_t call_insn,
8 jump_insn;
9 };
10
11 static int arm64_mov__parse(struct arch *arch __maybe_unused,
12 struct ins_operands *ops,
13 struct map_symbol *ms __maybe_unused)
14 {
15 char *s = strchr(ops->raw, ','), *target, *endptr;
16
17 if (s == NULL)
18 return -1;
19
20 *s = '\0';
21 ops->source.raw = strdup(ops->raw);
22 *s = ',';
23
24 if (ops->source.raw == NULL)
25 return -1;
26
27 target = ++s;
28 ops->target.raw = strdup(target);
29 if (ops->target.raw == NULL)
30 goto out_free_source;
31
32 ops->target.addr = strtoull(target, &endptr, 16);
33 if (endptr == target)
34 goto out_free_target;
35
36 s = strchr(endptr, '<');
37 if (s == NULL)
38 goto out_free_target;
39 endptr = strchr(s + 1, '>');
40 if (endptr == NULL)
41 goto out_free_target;
42
43 *endptr = '\0';
44 *s = ' ';
45 ops->target.name = strdup(s);
46 *s = '<';
47 *endptr = '>';
48 if (ops->target.name == NULL)
49 goto out_free_target;
50
51 return 0;
52
53 out_free_target:
54 zfree(&ops->target.raw);
55 out_free_source:
56 zfree(&ops->source.raw);
57 return -1;
58 }
59
60 static int mov__scnprintf(struct ins *ins, char *bf, size_t size,
61 struct ins_operands *ops, int max_ins_name);
62
63 static struct ins_ops arm64_mov_ops = {
64 .parse = arm64_mov__parse,
65 .scnprintf = mov__scnprintf,
66 };
67
68 static struct ins_ops *arm64__associate_instruction_ops(struct arch *arch, const char *name)
69 {
70 struct arm64_annotate *arm = arch->priv;
71 struct ins_ops *ops;
72 regmatch_t match[2];
73
74 if (!regexec(&arm->jump_insn, name, 2, match, 0))
75 ops = &jump_ops;
76 else if (!regexec(&arm->call_insn, name, 2, match, 0))
77 ops = &call_ops;
78 else if (!strcmp(name, "ret"))
79 ops = &ret_ops;
80 else
81 ops = &arm64_mov_ops;
82
83 arch__associate_ins_ops(arch, name, ops);
84 return ops;
85 }
86
87 static int arm64__annotate_init(struct arch *arch, char *cpuid __maybe_unused)
88 {
89 struct arm64_annotate *arm;
90 int err;
91
92 if (arch->initialized)
93 return 0;
94
95 arm = zalloc(sizeof(*arm));
96 if (!arm)
97 return -1;
98
99 /* bl, blr */
100 err = regcomp(&arm->call_insn, "^blr?$", REG_EXTENDED);
101 if (err)
102 goto out_free_arm;
103 /* b, b.cond, br, cbz/cbnz, tbz/tbnz */
104 err = regcomp(&arm->jump_insn, "^[ct]?br?\\.?(cc|cs|eq|ge|gt|hi|le|ls|lt|mi|ne|pl)?n?z?$",
105 REG_EXTENDED);
106 if (err)
107 goto out_free_call;
108
109 arch->initialized = true;
110 arch->priv = arm;
111 arch->associate_instruction_ops = arm64__associate_instruction_ops;
112 arch->objdump.comment_char = '/';
113 arch->objdump.skip_functions_char = '+';
114 return 0;
115
116 out_free_call:
117 regfree(&arm->call_insn);
118 out_free_arm:
119 free(arm);
120 return -1;
121 }
Linux with added FPC-III support