Commit | Line | Data |
---|---|---|
66e274f3 FW |
1 | #include "event.h" |
2 | #include "symbol.h" | |
3 | #include <stdlib.h> | |
4 | #include <string.h> | |
5 | #include <stdio.h> | |
e4204992 | 6 | #include "debug.h" |
66e274f3 | 7 | |
3846df2e ACM |
8 | const char *map_type__name[MAP__NR_TYPES] = { |
9 | [MAP__FUNCTION] = "Functions", | |
10 | [MAP__VARIABLE] = "Variables", | |
11 | }; | |
12 | ||
66e274f3 FW |
13 | static inline int is_anon_memory(const char *filename) |
14 | { | |
15 | return strcmp(filename, "//anon") == 0; | |
16 | } | |
17 | ||
18 | static int strcommon(const char *pathname, char *cwd, int cwdlen) | |
19 | { | |
20 | int n = 0; | |
21 | ||
22 | while (n < cwdlen && pathname[n] == cwd[n]) | |
23 | ++n; | |
24 | ||
25 | return n; | |
26 | } | |
27 | ||
3610583c ACM |
28 | void map__init(struct map *self, enum map_type type, |
29 | u64 start, u64 end, u64 pgoff, struct dso *dso) | |
afb7b4f0 | 30 | { |
3610583c | 31 | self->type = type; |
afb7b4f0 ACM |
32 | self->start = start; |
33 | self->end = end; | |
34 | self->pgoff = pgoff; | |
35 | self->dso = dso; | |
36 | self->map_ip = map__map_ip; | |
37 | self->unmap_ip = map__unmap_ip; | |
38 | RB_CLEAR_NODE(&self->rb_node); | |
39 | } | |
40 | ||
3610583c ACM |
41 | struct map *map__new(struct mmap_event *event, enum map_type type, |
42 | char *cwd, int cwdlen) | |
66e274f3 FW |
43 | { |
44 | struct map *self = malloc(sizeof(*self)); | |
45 | ||
46 | if (self != NULL) { | |
47 | const char *filename = event->filename; | |
48 | char newfilename[PATH_MAX]; | |
afb7b4f0 | 49 | struct dso *dso; |
66e274f3 FW |
50 | int anon; |
51 | ||
52 | if (cwd) { | |
53 | int n = strcommon(filename, cwd, cwdlen); | |
54 | ||
55 | if (n == cwdlen) { | |
56 | snprintf(newfilename, sizeof(newfilename), | |
57 | ".%s", filename + n); | |
58 | filename = newfilename; | |
59 | } | |
60 | } | |
61 | ||
62 | anon = is_anon_memory(filename); | |
63 | ||
64 | if (anon) { | |
65 | snprintf(newfilename, sizeof(newfilename), "/tmp/perf-%d.map", event->pid); | |
66 | filename = newfilename; | |
67 | } | |
68 | ||
00a192b3 | 69 | dso = dsos__findnew(filename); |
afb7b4f0 | 70 | if (dso == NULL) |
66e274f3 FW |
71 | goto out_delete; |
72 | ||
3610583c | 73 | map__init(self, type, event->start, event->start + event->len, |
afb7b4f0 ACM |
74 | event->pgoff, dso); |
75 | ||
8d92c02a ACM |
76 | if (anon) { |
77 | set_identity: | |
ed52ce2e | 78 | self->map_ip = self->unmap_ip = identity__map_ip; |
8d92c02a ACM |
79 | } else if (strcmp(filename, "[vdso]") == 0) { |
80 | dso__set_loaded(dso, self->type); | |
81 | goto set_identity; | |
82 | } | |
66e274f3 FW |
83 | } |
84 | return self; | |
85 | out_delete: | |
86 | free(self); | |
87 | return NULL; | |
88 | } | |
89 | ||
c338aee8 ACM |
90 | void map__delete(struct map *self) |
91 | { | |
92 | free(self); | |
93 | } | |
94 | ||
6a4694a4 | 95 | void map__fixup_start(struct map *self) |
c338aee8 | 96 | { |
6a4694a4 | 97 | struct rb_root *symbols = &self->dso->symbols[self->type]; |
fcf1203a | 98 | struct rb_node *nd = rb_first(symbols); |
c338aee8 ACM |
99 | if (nd != NULL) { |
100 | struct symbol *sym = rb_entry(nd, struct symbol, rb_node); | |
101 | self->start = sym->start; | |
102 | } | |
103 | } | |
104 | ||
6a4694a4 | 105 | void map__fixup_end(struct map *self) |
c338aee8 | 106 | { |
6a4694a4 | 107 | struct rb_root *symbols = &self->dso->symbols[self->type]; |
fcf1203a | 108 | struct rb_node *nd = rb_last(symbols); |
c338aee8 ACM |
109 | if (nd != NULL) { |
110 | struct symbol *sym = rb_entry(nd, struct symbol, rb_node); | |
111 | self->end = sym->end; | |
112 | } | |
113 | } | |
114 | ||
d70a5402 ACM |
115 | #define DSO__DELETED "(deleted)" |
116 | ||
9de89fe7 | 117 | int map__load(struct map *self, symbol_filter_t filter) |
66bd8424 | 118 | { |
79406cd7 | 119 | const char *name = self->dso->long_name; |
a128168d | 120 | int nr; |
79406cd7 | 121 | |
a128168d MH |
122 | if (dso__loaded(self->dso, self->type)) |
123 | return 0; | |
124 | ||
9de89fe7 | 125 | nr = dso__load(self->dso, self, filter); |
79406cd7 ACM |
126 | if (nr < 0) { |
127 | if (self->dso->has_build_id) { | |
128 | char sbuild_id[BUILD_ID_SIZE * 2 + 1]; | |
129 | ||
130 | build_id__sprintf(self->dso->build_id, | |
131 | sizeof(self->dso->build_id), | |
132 | sbuild_id); | |
133 | pr_warning("%s with build id %s not found", | |
134 | name, sbuild_id); | |
135 | } else | |
136 | pr_warning("Failed to open %s", name); | |
137 | ||
138 | pr_warning(", continuing without symbols\n"); | |
139 | return -1; | |
140 | } else if (nr == 0) { | |
141 | const size_t len = strlen(name); | |
142 | const size_t real_len = len - sizeof(DSO__DELETED); | |
143 | ||
144 | if (len > sizeof(DSO__DELETED) && | |
145 | strcmp(name + real_len + 1, DSO__DELETED) == 0) { | |
146 | pr_warning("%.*s was updated, restart the long " | |
147 | "running apps that use it!\n", | |
148 | (int)real_len, name); | |
149 | } else { | |
150 | pr_warning("no symbols found in %s, maybe install " | |
151 | "a debug package?\n", name); | |
66bd8424 | 152 | } |
79406cd7 ACM |
153 | |
154 | return -1; | |
66bd8424 | 155 | } |
9de89fe7 ACM |
156 | /* |
157 | * Only applies to the kernel, as its symtabs aren't relative like the | |
158 | * module ones. | |
159 | */ | |
160 | if (self->dso->kernel) | |
161 | map__reloc_vmlinux(self); | |
66bd8424 | 162 | |
79406cd7 ACM |
163 | return 0; |
164 | } | |
165 | ||
9de89fe7 ACM |
166 | struct symbol *map__find_symbol(struct map *self, u64 addr, |
167 | symbol_filter_t filter) | |
79406cd7 | 168 | { |
9de89fe7 | 169 | if (map__load(self, filter) < 0) |
79406cd7 ACM |
170 | return NULL; |
171 | ||
ea08d8cb | 172 | return dso__find_symbol(self->dso, self->type, addr); |
66bd8424 ACM |
173 | } |
174 | ||
79406cd7 ACM |
175 | struct symbol *map__find_symbol_by_name(struct map *self, const char *name, |
176 | symbol_filter_t filter) | |
177 | { | |
9de89fe7 | 178 | if (map__load(self, filter) < 0) |
79406cd7 ACM |
179 | return NULL; |
180 | ||
181 | if (!dso__sorted_by_name(self->dso, self->type)) | |
182 | dso__sort_by_name(self->dso, self->type); | |
183 | ||
184 | return dso__find_symbol_by_name(self->dso, self->type, name); | |
185 | } | |
186 | ||
66e274f3 FW |
187 | struct map *map__clone(struct map *self) |
188 | { | |
189 | struct map *map = malloc(sizeof(*self)); | |
190 | ||
191 | if (!map) | |
192 | return NULL; | |
193 | ||
194 | memcpy(map, self, sizeof(*self)); | |
195 | ||
196 | return map; | |
197 | } | |
198 | ||
199 | int map__overlap(struct map *l, struct map *r) | |
200 | { | |
201 | if (l->start > r->start) { | |
202 | struct map *t = l; | |
203 | l = r; | |
204 | r = t; | |
205 | } | |
206 | ||
207 | if (l->end > r->start) | |
208 | return 1; | |
209 | ||
210 | return 0; | |
211 | } | |
212 | ||
213 | size_t map__fprintf(struct map *self, FILE *fp) | |
214 | { | |
215 | return fprintf(fp, " %Lx-%Lx %Lx %s\n", | |
216 | self->start, self->end, self->pgoff, self->dso->name); | |
217 | } | |
7a2b6209 KS |
218 | |
219 | /* | |
220 | * objdump wants/reports absolute IPs for ET_EXEC, and RIPs for ET_DYN. | |
221 | * map->dso->adjust_symbols==1 for ET_EXEC-like cases. | |
222 | */ | |
223 | u64 map__rip_2objdump(struct map *map, u64 rip) | |
224 | { | |
225 | u64 addr = map->dso->adjust_symbols ? | |
226 | map->unmap_ip(map, rip) : /* RIP -> IP */ | |
227 | rip; | |
228 | return addr; | |
229 | } | |
ee11b90b KS |
230 | |
231 | u64 map__objdump_2ip(struct map *map, u64 addr) | |
232 | { | |
233 | u64 ip = map->dso->adjust_symbols ? | |
234 | addr : | |
235 | map->unmap_ip(map, addr); /* RIP -> IP */ | |
236 | return ip; | |
237 | } |