1 // SPDX-License-Identifier: GPL-2.0
2 /*
3 * Perf annotate functions.
4 *
5 * Copyright (C) 2020-2023 Loongson Technology Corporation Limited
6 */
7
loongarch_call__parse(struct arch * arch,struct ins_operands * ops,struct map_symbol * ms)8 static int loongarch_call__parse(struct arch *arch, struct ins_operands *ops, struct map_symbol *ms)
9 {
10 char *c, *endptr, *tok, *name;
11 struct map *map = ms->map;
12 struct addr_map_symbol target = {
13 .ms = { .map = map, },
14 };
15
16 c = strchr(ops->raw, '#');
17 if (c++ == NULL)
18 return -1;
19
20 ops->target.addr = strtoull(c, &endptr, 16);
21
22 name = strchr(endptr, '<');
23 name++;
24
25 if (arch->objdump.skip_functions_char &&
26 strchr(name, arch->objdump.skip_functions_char))
27 return -1;
28
29 tok = strchr(name, '>');
30 if (tok == NULL)
31 return -1;
32
33 *tok = '\0';
34 ops->target.name = strdup(name);
35 *tok = '>';
36
37 if (ops->target.name == NULL)
38 return -1;
39
40 target.addr = map__objdump_2mem(map, ops->target.addr);
41
42 if (maps__find_ams(ms->maps, &target) == 0 &&
43 map__rip_2objdump(target.ms.map, map__map_ip(target.ms.map, target.addr)) == ops->target.addr)
44 ops->target.sym = target.ms.sym;
45
46 return 0;
47 }
48
49 static struct ins_ops loongarch_call_ops = {
50 .parse = loongarch_call__parse,
51 .scnprintf = call__scnprintf,
52 };
53
loongarch_jump__parse(struct arch * arch,struct ins_operands * ops,struct map_symbol * ms)54 static int loongarch_jump__parse(struct arch *arch, struct ins_operands *ops, struct map_symbol *ms)
55 {
56 struct map *map = ms->map;
57 struct symbol *sym = ms->sym;
58 struct addr_map_symbol target = {
59 .ms = { .map = map, },
60 };
61 const char *c = strchr(ops->raw, '#');
62 u64 start, end;
63
64 ops->raw_comment = strchr(ops->raw, arch->objdump.comment_char);
65 ops->raw_func_start = strchr(ops->raw, '<');
66
67 if (ops->raw_func_start && c > ops->raw_func_start)
68 c = NULL;
69
70 if (c++ != NULL)
71 ops->target.addr = strtoull(c, NULL, 16);
72 else
73 ops->target.addr = strtoull(ops->raw, NULL, 16);
74
75 target.addr = map__objdump_2mem(map, ops->target.addr);
76 start = map__unmap_ip(map, sym->start);
77 end = map__unmap_ip(map, sym->end);
78
79 ops->target.outside = target.addr < start || target.addr > end;
80
81 if (maps__find_ams(ms->maps, &target) == 0 &&
82 map__rip_2objdump(target.ms.map, map__map_ip(target.ms.map, target.addr)) == ops->target.addr)
83 ops->target.sym = target.ms.sym;
84
85 if (!ops->target.outside) {
86 ops->target.offset = target.addr - start;
87 ops->target.offset_avail = true;
88 } else {
89 ops->target.offset_avail = false;
90 }
91
92 return 0;
93 }
94
95 static struct ins_ops loongarch_jump_ops = {
96 .parse = loongarch_jump__parse,
97 .scnprintf = jump__scnprintf,
98 };
99
100 static
loongarch__associate_ins_ops(struct arch * arch,const char * name)101 struct ins_ops *loongarch__associate_ins_ops(struct arch *arch, const char *name)
102 {
103 struct ins_ops *ops = NULL;
104
105 if (!strcmp(name, "bl"))
106 ops = &loongarch_call_ops;
107 else if (!strcmp(name, "jirl"))
108 ops = &ret_ops;
109 else if (!strcmp(name, "b") ||
110 !strncmp(name, "beq", 3) ||
111 !strncmp(name, "bne", 3) ||
112 !strncmp(name, "blt", 3) ||
113 !strncmp(name, "bge", 3) ||
114 !strncmp(name, "bltu", 4) ||
115 !strncmp(name, "bgeu", 4))
116 ops = &loongarch_jump_ops;
117 else
118 return NULL;
119
120 arch__associate_ins_ops(arch, name, ops);
121
122 return ops;
123 }
124
125 static
loongarch__annotate_init(struct arch * arch,char * cpuid __maybe_unused)126 int loongarch__annotate_init(struct arch *arch, char *cpuid __maybe_unused)
127 {
128 if (!arch->initialized) {
129 arch->associate_instruction_ops = loongarch__associate_ins_ops;
130 arch->initialized = true;
131 arch->objdump.comment_char = '#';
132 }
133
134 return 0;
135 }
136