Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 1 | #include "util.h" |
| 2 | #include "../perf.h" |
Arnaldo Carvalho de Melo | a0055ae | 2009-06-01 17:50:19 -0300 | [diff] [blame] | 3 | #include "string.h" |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 4 | #include "symbol.h" |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 5 | #include "thread.h" |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 6 | |
Frederic Weisbecker | 8f28827a | 2009-08-16 22:05:48 +0200 | [diff] [blame] | 7 | #include "debug.h" |
| 8 | |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 9 | #include <libelf.h> |
| 10 | #include <gelf.h> |
| 11 | #include <elf.h> |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 12 | #include <sys/utsname.h> |
Peter Zijlstra | 2cdbc46 | 2009-08-05 14:05:16 +0200 | [diff] [blame] | 13 | |
Arnaldo Carvalho de Melo | 94cb9e3 | 2009-08-06 14:43:17 -0300 | [diff] [blame] | 14 | enum dso_origin { |
| 15 | DSO__ORIG_KERNEL = 0, |
| 16 | DSO__ORIG_JAVA_JIT, |
| 17 | DSO__ORIG_FEDORA, |
| 18 | DSO__ORIG_UBUNTU, |
| 19 | DSO__ORIG_BUILDID, |
| 20 | DSO__ORIG_DSO, |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 21 | DSO__ORIG_KMODULE, |
Arnaldo Carvalho de Melo | 94cb9e3 | 2009-08-06 14:43:17 -0300 | [diff] [blame] | 22 | DSO__ORIG_NOT_FOUND, |
| 23 | }; |
| 24 | |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 25 | static void dsos__add(struct dso *dso); |
| 26 | static struct dso *dsos__find(const char *name); |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 27 | static struct map *map__new2(u64 start, struct dso *dso); |
| 28 | static void kernel_maps__insert(struct map *map); |
Arnaldo Carvalho de Melo | 00a192b | 2009-10-30 16:28:24 -0200 | [diff] [blame^] | 29 | unsigned int symbol__priv_size; |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 30 | |
Arnaldo Carvalho de Melo | af427bf | 2009-10-05 14:26:17 -0300 | [diff] [blame] | 31 | static struct rb_root kernel_maps; |
| 32 | |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 33 | static void dso__fixup_sym_end(struct dso *self) |
Arnaldo Carvalho de Melo | af427bf | 2009-10-05 14:26:17 -0300 | [diff] [blame] | 34 | { |
| 35 | struct rb_node *nd, *prevnd = rb_first(&self->syms); |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 36 | struct symbol *curr, *prev; |
Arnaldo Carvalho de Melo | af427bf | 2009-10-05 14:26:17 -0300 | [diff] [blame] | 37 | |
| 38 | if (prevnd == NULL) |
| 39 | return; |
| 40 | |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 41 | curr = rb_entry(prevnd, struct symbol, rb_node); |
| 42 | |
Arnaldo Carvalho de Melo | af427bf | 2009-10-05 14:26:17 -0300 | [diff] [blame] | 43 | for (nd = rb_next(prevnd); nd; nd = rb_next(nd)) { |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 44 | prev = curr; |
| 45 | curr = rb_entry(nd, struct symbol, rb_node); |
Arnaldo Carvalho de Melo | af427bf | 2009-10-05 14:26:17 -0300 | [diff] [blame] | 46 | |
| 47 | if (prev->end == prev->start) |
| 48 | prev->end = curr->start - 1; |
Arnaldo Carvalho de Melo | af427bf | 2009-10-05 14:26:17 -0300 | [diff] [blame] | 49 | } |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 50 | |
| 51 | /* Last entry */ |
| 52 | if (curr->end == curr->start) |
| 53 | curr->end = roundup(curr->start, 4096); |
Arnaldo Carvalho de Melo | af427bf | 2009-10-05 14:26:17 -0300 | [diff] [blame] | 54 | } |
| 55 | |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 56 | static void kernel_maps__fixup_end(void) |
Arnaldo Carvalho de Melo | af427bf | 2009-10-05 14:26:17 -0300 | [diff] [blame] | 57 | { |
| 58 | struct map *prev, *curr; |
| 59 | struct rb_node *nd, *prevnd = rb_first(&kernel_maps); |
| 60 | |
| 61 | if (prevnd == NULL) |
| 62 | return; |
| 63 | |
| 64 | curr = rb_entry(prevnd, struct map, rb_node); |
Arnaldo Carvalho de Melo | af427bf | 2009-10-05 14:26:17 -0300 | [diff] [blame] | 65 | |
| 66 | for (nd = rb_next(prevnd); nd; nd = rb_next(nd)) { |
| 67 | prev = curr; |
| 68 | curr = rb_entry(nd, struct map, rb_node); |
| 69 | prev->end = curr->start - 1; |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 70 | } |
| 71 | |
| 72 | nd = rb_last(&curr->dso->syms); |
| 73 | if (nd) { |
| 74 | struct symbol *sym = rb_entry(nd, struct symbol, rb_node); |
| 75 | curr->end = sym->end; |
Arnaldo Carvalho de Melo | af427bf | 2009-10-05 14:26:17 -0300 | [diff] [blame] | 76 | } |
| 77 | } |
| 78 | |
Arnaldo Carvalho de Melo | 00a192b | 2009-10-30 16:28:24 -0200 | [diff] [blame^] | 79 | static struct symbol *symbol__new(u64 start, u64 len, const char *name) |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 80 | { |
Arnaldo Carvalho de Melo | 0085c954 | 2009-05-28 14:55:13 -0300 | [diff] [blame] | 81 | size_t namelen = strlen(name) + 1; |
Arnaldo Carvalho de Melo | 00a192b | 2009-10-30 16:28:24 -0200 | [diff] [blame^] | 82 | struct symbol *self = calloc(1, (symbol__priv_size + |
| 83 | sizeof(*self) + namelen)); |
Ingo Molnar | 0b73da3 | 2009-06-06 15:48:52 +0200 | [diff] [blame] | 84 | if (!self) |
| 85 | return NULL; |
| 86 | |
Arnaldo Carvalho de Melo | 00a192b | 2009-10-30 16:28:24 -0200 | [diff] [blame^] | 87 | if (symbol__priv_size) { |
| 88 | memset(self, 0, symbol__priv_size); |
| 89 | self = ((void *)self) + symbol__priv_size; |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 90 | } |
Ingo Molnar | 0b73da3 | 2009-06-06 15:48:52 +0200 | [diff] [blame] | 91 | self->start = start; |
Mike Galbraith | 6cfcc53 | 2009-07-02 08:08:36 +0200 | [diff] [blame] | 92 | self->end = len ? start + len - 1 : start; |
Arnaldo Carvalho de Melo | e420499 | 2009-10-20 14:25:40 -0200 | [diff] [blame] | 93 | |
Arnaldo Carvalho de Melo | 6beba7a | 2009-10-21 17:34:06 -0200 | [diff] [blame] | 94 | pr_debug3("%s: %s %#Lx-%#Lx\n", __func__, name, start, self->end); |
Arnaldo Carvalho de Melo | e420499 | 2009-10-20 14:25:40 -0200 | [diff] [blame] | 95 | |
Ingo Molnar | 0b73da3 | 2009-06-06 15:48:52 +0200 | [diff] [blame] | 96 | memcpy(self->name, name, namelen); |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 97 | |
| 98 | return self; |
| 99 | } |
| 100 | |
Arnaldo Carvalho de Melo | 00a192b | 2009-10-30 16:28:24 -0200 | [diff] [blame^] | 101 | static void symbol__delete(struct symbol *self) |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 102 | { |
Arnaldo Carvalho de Melo | 00a192b | 2009-10-30 16:28:24 -0200 | [diff] [blame^] | 103 | free(((void *)self) - symbol__priv_size); |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 104 | } |
| 105 | |
| 106 | static size_t symbol__fprintf(struct symbol *self, FILE *fp) |
| 107 | { |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 108 | return fprintf(fp, " %llx-%llx %s\n", |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 109 | self->start, self->end, self->name); |
| 110 | } |
| 111 | |
Arnaldo Carvalho de Melo | 00a192b | 2009-10-30 16:28:24 -0200 | [diff] [blame^] | 112 | struct dso *dso__new(const char *name) |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 113 | { |
| 114 | struct dso *self = malloc(sizeof(*self) + strlen(name) + 1); |
| 115 | |
| 116 | if (self != NULL) { |
| 117 | strcpy(self->name, name); |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 118 | self->long_name = self->name; |
| 119 | self->short_name = self->name; |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 120 | self->syms = RB_ROOT; |
Peter Zijlstra | fc54db5 | 2009-06-05 14:04:59 +0200 | [diff] [blame] | 121 | self->find_symbol = dso__find_symbol; |
Arnaldo Carvalho de Melo | 52d422d | 2009-07-10 22:47:28 -0300 | [diff] [blame] | 122 | self->slen_calculated = 0; |
Arnaldo Carvalho de Melo | 94cb9e3 | 2009-08-06 14:43:17 -0300 | [diff] [blame] | 123 | self->origin = DSO__ORIG_NOT_FOUND; |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 124 | } |
| 125 | |
| 126 | return self; |
| 127 | } |
| 128 | |
| 129 | static void dso__delete_symbols(struct dso *self) |
| 130 | { |
| 131 | struct symbol *pos; |
| 132 | struct rb_node *next = rb_first(&self->syms); |
| 133 | |
| 134 | while (next) { |
| 135 | pos = rb_entry(next, struct symbol, rb_node); |
| 136 | next = rb_next(&pos->rb_node); |
Arnaldo Carvalho de Melo | c8c9652 | 2009-06-01 17:50:57 -0300 | [diff] [blame] | 137 | rb_erase(&pos->rb_node, &self->syms); |
Arnaldo Carvalho de Melo | 00a192b | 2009-10-30 16:28:24 -0200 | [diff] [blame^] | 138 | symbol__delete(pos); |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 139 | } |
| 140 | } |
| 141 | |
| 142 | void dso__delete(struct dso *self) |
| 143 | { |
| 144 | dso__delete_symbols(self); |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 145 | if (self->long_name != self->name) |
| 146 | free(self->long_name); |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 147 | free(self); |
| 148 | } |
| 149 | |
| 150 | static void dso__insert_symbol(struct dso *self, struct symbol *sym) |
| 151 | { |
| 152 | struct rb_node **p = &self->syms.rb_node; |
| 153 | struct rb_node *parent = NULL; |
Paul Mackerras | 9cffa8d | 2009-06-19 22:21:42 +1000 | [diff] [blame] | 154 | const u64 ip = sym->start; |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 155 | struct symbol *s; |
| 156 | |
| 157 | while (*p != NULL) { |
| 158 | parent = *p; |
| 159 | s = rb_entry(parent, struct symbol, rb_node); |
| 160 | if (ip < s->start) |
| 161 | p = &(*p)->rb_left; |
| 162 | else |
| 163 | p = &(*p)->rb_right; |
| 164 | } |
| 165 | rb_link_node(&sym->rb_node, parent, p); |
| 166 | rb_insert_color(&sym->rb_node, &self->syms); |
| 167 | } |
| 168 | |
Paul Mackerras | 9cffa8d | 2009-06-19 22:21:42 +1000 | [diff] [blame] | 169 | struct symbol *dso__find_symbol(struct dso *self, u64 ip) |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 170 | { |
| 171 | struct rb_node *n; |
| 172 | |
| 173 | if (self == NULL) |
| 174 | return NULL; |
| 175 | |
| 176 | n = self->syms.rb_node; |
| 177 | |
| 178 | while (n) { |
| 179 | struct symbol *s = rb_entry(n, struct symbol, rb_node); |
| 180 | |
| 181 | if (ip < s->start) |
| 182 | n = n->rb_left; |
| 183 | else if (ip > s->end) |
| 184 | n = n->rb_right; |
| 185 | else |
| 186 | return s; |
| 187 | } |
| 188 | |
| 189 | return NULL; |
| 190 | } |
| 191 | |
| 192 | size_t dso__fprintf(struct dso *self, FILE *fp) |
| 193 | { |
Arnaldo Carvalho de Melo | a2a99e8 | 2009-10-05 14:26:18 -0300 | [diff] [blame] | 194 | size_t ret = fprintf(fp, "dso: %s\n", self->short_name); |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 195 | |
| 196 | struct rb_node *nd; |
| 197 | for (nd = rb_first(&self->syms); nd; nd = rb_next(nd)) { |
| 198 | struct symbol *pos = rb_entry(nd, struct symbol, rb_node); |
| 199 | ret += symbol__fprintf(pos, fp); |
| 200 | } |
| 201 | |
| 202 | return ret; |
| 203 | } |
| 204 | |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 205 | /* |
| 206 | * Loads the function entries in /proc/kallsyms into kernel_map->dso, |
| 207 | * so that we can in the next step set the symbol ->end address and then |
| 208 | * call kernel_maps__split_kallsyms. |
| 209 | */ |
Arnaldo Carvalho de Melo | 6beba7a | 2009-10-21 17:34:06 -0200 | [diff] [blame] | 210 | static int kernel_maps__load_all_kallsyms(void) |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 211 | { |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 212 | char *line = NULL; |
| 213 | size_t n; |
| 214 | FILE *file = fopen("/proc/kallsyms", "r"); |
| 215 | |
| 216 | if (file == NULL) |
| 217 | goto out_failure; |
| 218 | |
| 219 | while (!feof(file)) { |
Paul Mackerras | 9cffa8d | 2009-06-19 22:21:42 +1000 | [diff] [blame] | 220 | u64 start; |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 221 | struct symbol *sym; |
| 222 | int line_len, len; |
| 223 | char symbol_type; |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 224 | char *symbol_name; |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 225 | |
| 226 | line_len = getline(&line, &n, file); |
| 227 | if (line_len < 0) |
| 228 | break; |
| 229 | |
| 230 | if (!line) |
| 231 | goto out_failure; |
| 232 | |
| 233 | line[--line_len] = '\0'; /* \n */ |
| 234 | |
Arnaldo Carvalho de Melo | a0055ae | 2009-06-01 17:50:19 -0300 | [diff] [blame] | 235 | len = hex2u64(line, &start); |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 236 | |
| 237 | len++; |
| 238 | if (len + 2 >= line_len) |
| 239 | continue; |
| 240 | |
| 241 | symbol_type = toupper(line[len]); |
| 242 | /* |
| 243 | * We're interested only in code ('T'ext) |
| 244 | */ |
| 245 | if (symbol_type != 'T' && symbol_type != 'W') |
| 246 | continue; |
Arnaldo Carvalho de Melo | af427bf | 2009-10-05 14:26:17 -0300 | [diff] [blame] | 247 | |
| 248 | symbol_name = line + len + 2; |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 249 | /* |
| 250 | * Will fix up the end later, when we have all symbols sorted. |
| 251 | */ |
Arnaldo Carvalho de Melo | 00a192b | 2009-10-30 16:28:24 -0200 | [diff] [blame^] | 252 | sym = symbol__new(start, 0, symbol_name); |
Arnaldo Carvalho de Melo | af427bf | 2009-10-05 14:26:17 -0300 | [diff] [blame] | 253 | |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 254 | if (sym == NULL) |
| 255 | goto out_delete_line; |
| 256 | |
| 257 | dso__insert_symbol(kernel_map->dso, sym); |
| 258 | } |
| 259 | |
| 260 | free(line); |
| 261 | fclose(file); |
| 262 | |
| 263 | return 0; |
| 264 | |
| 265 | out_delete_line: |
| 266 | free(line); |
| 267 | out_failure: |
| 268 | return -1; |
| 269 | } |
| 270 | |
| 271 | /* |
| 272 | * Split the symbols into maps, making sure there are no overlaps, i.e. the |
| 273 | * kernel range is broken in several maps, named [kernel].N, as we don't have |
| 274 | * the original ELF section names vmlinux have. |
| 275 | */ |
| 276 | static int kernel_maps__split_kallsyms(symbol_filter_t filter, int use_modules) |
| 277 | { |
| 278 | struct map *map = kernel_map; |
| 279 | struct symbol *pos; |
| 280 | int count = 0; |
| 281 | struct rb_node *next = rb_first(&kernel_map->dso->syms); |
| 282 | int kernel_range = 0; |
| 283 | |
| 284 | while (next) { |
| 285 | char *module; |
| 286 | |
| 287 | pos = rb_entry(next, struct symbol, rb_node); |
| 288 | next = rb_next(&pos->rb_node); |
| 289 | |
| 290 | module = strchr(pos->name, '\t'); |
| 291 | if (module) { |
Arnaldo Carvalho de Melo | af427bf | 2009-10-05 14:26:17 -0300 | [diff] [blame] | 292 | if (!use_modules) |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 293 | goto delete_symbol; |
| 294 | |
| 295 | *module++ = '\0'; |
| 296 | |
Arnaldo Carvalho de Melo | af427bf | 2009-10-05 14:26:17 -0300 | [diff] [blame] | 297 | if (strcmp(map->dso->name, module)) { |
| 298 | map = kernel_maps__find_by_dso_name(module); |
| 299 | if (!map) { |
Arnaldo Carvalho de Melo | 6beba7a | 2009-10-21 17:34:06 -0200 | [diff] [blame] | 300 | pr_err("/proc/{kallsyms,modules} " |
| 301 | "inconsistency!\n"); |
Arnaldo Carvalho de Melo | af427bf | 2009-10-05 14:26:17 -0300 | [diff] [blame] | 302 | return -1; |
| 303 | } |
| 304 | } |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 305 | /* |
| 306 | * So that we look just like we get from .ko files, |
| 307 | * i.e. not prelinked, relative to map->start. |
| 308 | */ |
| 309 | pos->start = map->map_ip(map, pos->start); |
| 310 | pos->end = map->map_ip(map, pos->end); |
| 311 | } else if (map != kernel_map) { |
| 312 | char dso_name[PATH_MAX]; |
| 313 | struct dso *dso; |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 314 | |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 315 | snprintf(dso_name, sizeof(dso_name), "[kernel].%d", |
| 316 | kernel_range++); |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 317 | |
Arnaldo Carvalho de Melo | 00a192b | 2009-10-30 16:28:24 -0200 | [diff] [blame^] | 318 | dso = dso__new(dso_name); |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 319 | if (dso == NULL) |
| 320 | return -1; |
| 321 | |
| 322 | map = map__new2(pos->start, dso); |
| 323 | if (map == NULL) { |
| 324 | dso__delete(dso); |
| 325 | return -1; |
| 326 | } |
| 327 | |
Arnaldo Carvalho de Melo | ed52ce2 | 2009-10-19 17:17:57 -0200 | [diff] [blame] | 328 | map->map_ip = map->unmap_ip = identity__map_ip; |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 329 | kernel_maps__insert(map); |
| 330 | ++kernel_range; |
| 331 | } |
| 332 | |
| 333 | if (filter && filter(map, pos)) { |
| 334 | delete_symbol: |
| 335 | rb_erase(&pos->rb_node, &kernel_map->dso->syms); |
Arnaldo Carvalho de Melo | 00a192b | 2009-10-30 16:28:24 -0200 | [diff] [blame^] | 336 | symbol__delete(pos); |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 337 | } else { |
| 338 | if (map != kernel_map) { |
| 339 | rb_erase(&pos->rb_node, &kernel_map->dso->syms); |
| 340 | dso__insert_symbol(map->dso, pos); |
| 341 | } |
Mike Galbraith | 9974f49 | 2009-07-02 08:05:58 +0200 | [diff] [blame] | 342 | count++; |
| 343 | } |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 344 | } |
| 345 | |
Mike Galbraith | 9974f49 | 2009-07-02 08:05:58 +0200 | [diff] [blame] | 346 | return count; |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 347 | } |
| 348 | |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 349 | |
Arnaldo Carvalho de Melo | 6beba7a | 2009-10-21 17:34:06 -0200 | [diff] [blame] | 350 | static int kernel_maps__load_kallsyms(symbol_filter_t filter, int use_modules) |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 351 | { |
Arnaldo Carvalho de Melo | 6beba7a | 2009-10-21 17:34:06 -0200 | [diff] [blame] | 352 | if (kernel_maps__load_all_kallsyms()) |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 353 | return -1; |
| 354 | |
| 355 | dso__fixup_sym_end(kernel_map->dso); |
| 356 | |
| 357 | return kernel_maps__split_kallsyms(filter, use_modules); |
| 358 | } |
| 359 | |
Arnaldo Carvalho de Melo | 6beba7a | 2009-10-21 17:34:06 -0200 | [diff] [blame] | 360 | static size_t kernel_maps__fprintf(FILE *fp) |
Arnaldo Carvalho de Melo | af427bf | 2009-10-05 14:26:17 -0300 | [diff] [blame] | 361 | { |
Arnaldo Carvalho de Melo | 6beba7a | 2009-10-21 17:34:06 -0200 | [diff] [blame] | 362 | size_t printed = fprintf(fp, "Kernel maps:\n"); |
Arnaldo Carvalho de Melo | af427bf | 2009-10-05 14:26:17 -0300 | [diff] [blame] | 363 | struct rb_node *nd; |
| 364 | |
Arnaldo Carvalho de Melo | af427bf | 2009-10-05 14:26:17 -0300 | [diff] [blame] | 365 | for (nd = rb_first(&kernel_maps); nd; nd = rb_next(nd)) { |
| 366 | struct map *pos = rb_entry(nd, struct map, rb_node); |
| 367 | |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 368 | printed += fprintf(fp, "Map:"); |
Arnaldo Carvalho de Melo | af427bf | 2009-10-05 14:26:17 -0300 | [diff] [blame] | 369 | printed += map__fprintf(pos, fp); |
Arnaldo Carvalho de Melo | 6beba7a | 2009-10-21 17:34:06 -0200 | [diff] [blame] | 370 | if (verbose > 1) { |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 371 | printed += dso__fprintf(pos->dso, fp); |
| 372 | printed += fprintf(fp, "--\n"); |
| 373 | } |
Arnaldo Carvalho de Melo | af427bf | 2009-10-05 14:26:17 -0300 | [diff] [blame] | 374 | } |
| 375 | |
Arnaldo Carvalho de Melo | 6beba7a | 2009-10-21 17:34:06 -0200 | [diff] [blame] | 376 | return printed + fprintf(fp, "END kernel maps\n"); |
Arnaldo Carvalho de Melo | af427bf | 2009-10-05 14:26:17 -0300 | [diff] [blame] | 377 | } |
| 378 | |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 379 | static int dso__load_perf_map(struct dso *self, struct map *map, |
Arnaldo Carvalho de Melo | 6beba7a | 2009-10-21 17:34:06 -0200 | [diff] [blame] | 380 | symbol_filter_t filter) |
Pekka Enberg | 80d496b | 2009-06-08 21:12:48 +0300 | [diff] [blame] | 381 | { |
| 382 | char *line = NULL; |
| 383 | size_t n; |
| 384 | FILE *file; |
| 385 | int nr_syms = 0; |
| 386 | |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 387 | file = fopen(self->long_name, "r"); |
Pekka Enberg | 80d496b | 2009-06-08 21:12:48 +0300 | [diff] [blame] | 388 | if (file == NULL) |
| 389 | goto out_failure; |
| 390 | |
| 391 | while (!feof(file)) { |
Paul Mackerras | 9cffa8d | 2009-06-19 22:21:42 +1000 | [diff] [blame] | 392 | u64 start, size; |
Pekka Enberg | 80d496b | 2009-06-08 21:12:48 +0300 | [diff] [blame] | 393 | struct symbol *sym; |
| 394 | int line_len, len; |
| 395 | |
| 396 | line_len = getline(&line, &n, file); |
| 397 | if (line_len < 0) |
| 398 | break; |
| 399 | |
| 400 | if (!line) |
| 401 | goto out_failure; |
| 402 | |
| 403 | line[--line_len] = '\0'; /* \n */ |
| 404 | |
| 405 | len = hex2u64(line, &start); |
| 406 | |
| 407 | len++; |
| 408 | if (len + 2 >= line_len) |
| 409 | continue; |
| 410 | |
| 411 | len += hex2u64(line + len, &size); |
| 412 | |
| 413 | len++; |
| 414 | if (len + 2 >= line_len) |
| 415 | continue; |
| 416 | |
Arnaldo Carvalho de Melo | 00a192b | 2009-10-30 16:28:24 -0200 | [diff] [blame^] | 417 | sym = symbol__new(start, size, line + len); |
Pekka Enberg | 80d496b | 2009-06-08 21:12:48 +0300 | [diff] [blame] | 418 | |
| 419 | if (sym == NULL) |
| 420 | goto out_delete_line; |
| 421 | |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 422 | if (filter && filter(map, sym)) |
Arnaldo Carvalho de Melo | 00a192b | 2009-10-30 16:28:24 -0200 | [diff] [blame^] | 423 | symbol__delete(sym); |
Pekka Enberg | 80d496b | 2009-06-08 21:12:48 +0300 | [diff] [blame] | 424 | else { |
| 425 | dso__insert_symbol(self, sym); |
| 426 | nr_syms++; |
| 427 | } |
| 428 | } |
| 429 | |
| 430 | free(line); |
| 431 | fclose(file); |
| 432 | |
| 433 | return nr_syms; |
| 434 | |
| 435 | out_delete_line: |
| 436 | free(line); |
| 437 | out_failure: |
| 438 | return -1; |
| 439 | } |
| 440 | |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 441 | /** |
| 442 | * elf_symtab__for_each_symbol - iterate thru all the symbols |
| 443 | * |
| 444 | * @self: struct elf_symtab instance to iterate |
Ingo Molnar | 83a0944 | 2009-08-15 12:26:57 +0200 | [diff] [blame] | 445 | * @idx: uint32_t idx |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 446 | * @sym: GElf_Sym iterator |
| 447 | */ |
Ingo Molnar | 83a0944 | 2009-08-15 12:26:57 +0200 | [diff] [blame] | 448 | #define elf_symtab__for_each_symbol(syms, nr_syms, idx, sym) \ |
| 449 | for (idx = 0, gelf_getsym(syms, idx, &sym);\ |
| 450 | idx < nr_syms; \ |
| 451 | idx++, gelf_getsym(syms, idx, &sym)) |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 452 | |
| 453 | static inline uint8_t elf_sym__type(const GElf_Sym *sym) |
| 454 | { |
| 455 | return GELF_ST_TYPE(sym->st_info); |
| 456 | } |
| 457 | |
| 458 | static inline int elf_sym__is_function(const GElf_Sym *sym) |
| 459 | { |
| 460 | return elf_sym__type(sym) == STT_FUNC && |
| 461 | sym->st_name != 0 && |
Arnaldo Carvalho de Melo | 8183313 | 2009-10-05 23:35:03 -0300 | [diff] [blame] | 462 | sym->st_shndx != SHN_UNDEF; |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 463 | } |
| 464 | |
Mike Galbraith | 6cfcc53 | 2009-07-02 08:08:36 +0200 | [diff] [blame] | 465 | static inline int elf_sym__is_label(const GElf_Sym *sym) |
| 466 | { |
| 467 | return elf_sym__type(sym) == STT_NOTYPE && |
| 468 | sym->st_name != 0 && |
| 469 | sym->st_shndx != SHN_UNDEF && |
| 470 | sym->st_shndx != SHN_ABS; |
| 471 | } |
| 472 | |
| 473 | static inline const char *elf_sec__name(const GElf_Shdr *shdr, |
| 474 | const Elf_Data *secstrs) |
| 475 | { |
| 476 | return secstrs->d_buf + shdr->sh_name; |
| 477 | } |
| 478 | |
| 479 | static inline int elf_sec__is_text(const GElf_Shdr *shdr, |
| 480 | const Elf_Data *secstrs) |
| 481 | { |
| 482 | return strstr(elf_sec__name(shdr, secstrs), "text") != NULL; |
| 483 | } |
| 484 | |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 485 | static inline const char *elf_sym__name(const GElf_Sym *sym, |
| 486 | const Elf_Data *symstrs) |
| 487 | { |
| 488 | return symstrs->d_buf + sym->st_name; |
| 489 | } |
| 490 | |
| 491 | static Elf_Scn *elf_section_by_name(Elf *elf, GElf_Ehdr *ep, |
| 492 | GElf_Shdr *shp, const char *name, |
Ingo Molnar | 83a0944 | 2009-08-15 12:26:57 +0200 | [diff] [blame] | 493 | size_t *idx) |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 494 | { |
| 495 | Elf_Scn *sec = NULL; |
| 496 | size_t cnt = 1; |
| 497 | |
| 498 | while ((sec = elf_nextscn(elf, sec)) != NULL) { |
| 499 | char *str; |
| 500 | |
| 501 | gelf_getshdr(sec, shp); |
| 502 | str = elf_strptr(elf, ep->e_shstrndx, shp->sh_name); |
| 503 | if (!strcmp(name, str)) { |
Ingo Molnar | 83a0944 | 2009-08-15 12:26:57 +0200 | [diff] [blame] | 504 | if (idx) |
| 505 | *idx = cnt; |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 506 | break; |
| 507 | } |
| 508 | ++cnt; |
| 509 | } |
| 510 | |
| 511 | return sec; |
| 512 | } |
| 513 | |
Arnaldo Carvalho de Melo | 8ce998d | 2009-06-03 00:54:33 -0300 | [diff] [blame] | 514 | #define elf_section__for_each_rel(reldata, pos, pos_mem, idx, nr_entries) \ |
| 515 | for (idx = 0, pos = gelf_getrel(reldata, 0, &pos_mem); \ |
| 516 | idx < nr_entries; \ |
| 517 | ++idx, pos = gelf_getrel(reldata, idx, &pos_mem)) |
| 518 | |
| 519 | #define elf_section__for_each_rela(reldata, pos, pos_mem, idx, nr_entries) \ |
| 520 | for (idx = 0, pos = gelf_getrela(reldata, 0, &pos_mem); \ |
| 521 | idx < nr_entries; \ |
| 522 | ++idx, pos = gelf_getrela(reldata, idx, &pos_mem)) |
| 523 | |
Arnaldo Carvalho de Melo | a25e46c | 2009-07-11 12:18:36 -0300 | [diff] [blame] | 524 | /* |
| 525 | * We need to check if we have a .dynsym, so that we can handle the |
| 526 | * .plt, synthesizing its symbols, that aren't on the symtabs (be it |
| 527 | * .dynsym or .symtab). |
| 528 | * And always look at the original dso, not at debuginfo packages, that |
| 529 | * have the PLT data stripped out (shdr_rel_plt.sh_type == SHT_NOBITS). |
| 530 | */ |
Arnaldo Carvalho de Melo | 6beba7a | 2009-10-21 17:34:06 -0200 | [diff] [blame] | 531 | static int dso__synthesize_plt_symbols(struct dso *self) |
Arnaldo Carvalho de Melo | 8ce998d | 2009-06-03 00:54:33 -0300 | [diff] [blame] | 532 | { |
| 533 | uint32_t nr_rel_entries, idx; |
| 534 | GElf_Sym sym; |
Paul Mackerras | 9cffa8d | 2009-06-19 22:21:42 +1000 | [diff] [blame] | 535 | u64 plt_offset; |
Arnaldo Carvalho de Melo | 8ce998d | 2009-06-03 00:54:33 -0300 | [diff] [blame] | 536 | GElf_Shdr shdr_plt; |
| 537 | struct symbol *f; |
Arnaldo Carvalho de Melo | a25e46c | 2009-07-11 12:18:36 -0300 | [diff] [blame] | 538 | GElf_Shdr shdr_rel_plt, shdr_dynsym; |
Arnaldo Carvalho de Melo | 8ce998d | 2009-06-03 00:54:33 -0300 | [diff] [blame] | 539 | Elf_Data *reldata, *syms, *symstrs; |
Arnaldo Carvalho de Melo | a25e46c | 2009-07-11 12:18:36 -0300 | [diff] [blame] | 540 | Elf_Scn *scn_plt_rel, *scn_symstrs, *scn_dynsym; |
| 541 | size_t dynsym_idx; |
| 542 | GElf_Ehdr ehdr; |
Arnaldo Carvalho de Melo | 8ce998d | 2009-06-03 00:54:33 -0300 | [diff] [blame] | 543 | char sympltname[1024]; |
Arnaldo Carvalho de Melo | a25e46c | 2009-07-11 12:18:36 -0300 | [diff] [blame] | 544 | Elf *elf; |
| 545 | int nr = 0, symidx, fd, err = 0; |
Arnaldo Carvalho de Melo | 8ce998d | 2009-06-03 00:54:33 -0300 | [diff] [blame] | 546 | |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 547 | fd = open(self->long_name, O_RDONLY); |
Arnaldo Carvalho de Melo | a25e46c | 2009-07-11 12:18:36 -0300 | [diff] [blame] | 548 | if (fd < 0) |
| 549 | goto out; |
| 550 | |
| 551 | elf = elf_begin(fd, ELF_C_READ_MMAP, NULL); |
| 552 | if (elf == NULL) |
| 553 | goto out_close; |
| 554 | |
| 555 | if (gelf_getehdr(elf, &ehdr) == NULL) |
| 556 | goto out_elf_end; |
| 557 | |
| 558 | scn_dynsym = elf_section_by_name(elf, &ehdr, &shdr_dynsym, |
| 559 | ".dynsym", &dynsym_idx); |
| 560 | if (scn_dynsym == NULL) |
| 561 | goto out_elf_end; |
| 562 | |
| 563 | scn_plt_rel = elf_section_by_name(elf, &ehdr, &shdr_rel_plt, |
Arnaldo Carvalho de Melo | 8ce998d | 2009-06-03 00:54:33 -0300 | [diff] [blame] | 564 | ".rela.plt", NULL); |
| 565 | if (scn_plt_rel == NULL) { |
Arnaldo Carvalho de Melo | a25e46c | 2009-07-11 12:18:36 -0300 | [diff] [blame] | 566 | scn_plt_rel = elf_section_by_name(elf, &ehdr, &shdr_rel_plt, |
Arnaldo Carvalho de Melo | 8ce998d | 2009-06-03 00:54:33 -0300 | [diff] [blame] | 567 | ".rel.plt", NULL); |
| 568 | if (scn_plt_rel == NULL) |
Arnaldo Carvalho de Melo | a25e46c | 2009-07-11 12:18:36 -0300 | [diff] [blame] | 569 | goto out_elf_end; |
Arnaldo Carvalho de Melo | 8ce998d | 2009-06-03 00:54:33 -0300 | [diff] [blame] | 570 | } |
| 571 | |
Arnaldo Carvalho de Melo | a25e46c | 2009-07-11 12:18:36 -0300 | [diff] [blame] | 572 | err = -1; |
Arnaldo Carvalho de Melo | 8ce998d | 2009-06-03 00:54:33 -0300 | [diff] [blame] | 573 | |
Arnaldo Carvalho de Melo | a25e46c | 2009-07-11 12:18:36 -0300 | [diff] [blame] | 574 | if (shdr_rel_plt.sh_link != dynsym_idx) |
| 575 | goto out_elf_end; |
| 576 | |
| 577 | if (elf_section_by_name(elf, &ehdr, &shdr_plt, ".plt", NULL) == NULL) |
| 578 | goto out_elf_end; |
Arnaldo Carvalho de Melo | 8ce998d | 2009-06-03 00:54:33 -0300 | [diff] [blame] | 579 | |
| 580 | /* |
Ingo Molnar | 83a0944 | 2009-08-15 12:26:57 +0200 | [diff] [blame] | 581 | * Fetch the relocation section to find the idxes to the GOT |
Arnaldo Carvalho de Melo | 8ce998d | 2009-06-03 00:54:33 -0300 | [diff] [blame] | 582 | * and the symbols in the .dynsym they refer to. |
| 583 | */ |
| 584 | reldata = elf_getdata(scn_plt_rel, NULL); |
| 585 | if (reldata == NULL) |
Arnaldo Carvalho de Melo | a25e46c | 2009-07-11 12:18:36 -0300 | [diff] [blame] | 586 | goto out_elf_end; |
Arnaldo Carvalho de Melo | 8ce998d | 2009-06-03 00:54:33 -0300 | [diff] [blame] | 587 | |
| 588 | syms = elf_getdata(scn_dynsym, NULL); |
| 589 | if (syms == NULL) |
Arnaldo Carvalho de Melo | a25e46c | 2009-07-11 12:18:36 -0300 | [diff] [blame] | 590 | goto out_elf_end; |
Arnaldo Carvalho de Melo | 8ce998d | 2009-06-03 00:54:33 -0300 | [diff] [blame] | 591 | |
Arnaldo Carvalho de Melo | a25e46c | 2009-07-11 12:18:36 -0300 | [diff] [blame] | 592 | scn_symstrs = elf_getscn(elf, shdr_dynsym.sh_link); |
Arnaldo Carvalho de Melo | 8ce998d | 2009-06-03 00:54:33 -0300 | [diff] [blame] | 593 | if (scn_symstrs == NULL) |
Arnaldo Carvalho de Melo | a25e46c | 2009-07-11 12:18:36 -0300 | [diff] [blame] | 594 | goto out_elf_end; |
Arnaldo Carvalho de Melo | 8ce998d | 2009-06-03 00:54:33 -0300 | [diff] [blame] | 595 | |
| 596 | symstrs = elf_getdata(scn_symstrs, NULL); |
| 597 | if (symstrs == NULL) |
Arnaldo Carvalho de Melo | a25e46c | 2009-07-11 12:18:36 -0300 | [diff] [blame] | 598 | goto out_elf_end; |
Arnaldo Carvalho de Melo | 8ce998d | 2009-06-03 00:54:33 -0300 | [diff] [blame] | 599 | |
| 600 | nr_rel_entries = shdr_rel_plt.sh_size / shdr_rel_plt.sh_entsize; |
| 601 | plt_offset = shdr_plt.sh_offset; |
| 602 | |
| 603 | if (shdr_rel_plt.sh_type == SHT_RELA) { |
| 604 | GElf_Rela pos_mem, *pos; |
| 605 | |
| 606 | elf_section__for_each_rela(reldata, pos, pos_mem, idx, |
| 607 | nr_rel_entries) { |
| 608 | symidx = GELF_R_SYM(pos->r_info); |
| 609 | plt_offset += shdr_plt.sh_entsize; |
| 610 | gelf_getsym(syms, symidx, &sym); |
| 611 | snprintf(sympltname, sizeof(sympltname), |
| 612 | "%s@plt", elf_sym__name(&sym, symstrs)); |
| 613 | |
| 614 | f = symbol__new(plt_offset, shdr_plt.sh_entsize, |
Arnaldo Carvalho de Melo | 00a192b | 2009-10-30 16:28:24 -0200 | [diff] [blame^] | 615 | sympltname); |
Arnaldo Carvalho de Melo | 8ce998d | 2009-06-03 00:54:33 -0300 | [diff] [blame] | 616 | if (!f) |
Arnaldo Carvalho de Melo | a25e46c | 2009-07-11 12:18:36 -0300 | [diff] [blame] | 617 | goto out_elf_end; |
Arnaldo Carvalho de Melo | 8ce998d | 2009-06-03 00:54:33 -0300 | [diff] [blame] | 618 | |
| 619 | dso__insert_symbol(self, f); |
| 620 | ++nr; |
| 621 | } |
| 622 | } else if (shdr_rel_plt.sh_type == SHT_REL) { |
| 623 | GElf_Rel pos_mem, *pos; |
| 624 | elf_section__for_each_rel(reldata, pos, pos_mem, idx, |
| 625 | nr_rel_entries) { |
| 626 | symidx = GELF_R_SYM(pos->r_info); |
| 627 | plt_offset += shdr_plt.sh_entsize; |
| 628 | gelf_getsym(syms, symidx, &sym); |
| 629 | snprintf(sympltname, sizeof(sympltname), |
| 630 | "%s@plt", elf_sym__name(&sym, symstrs)); |
| 631 | |
| 632 | f = symbol__new(plt_offset, shdr_plt.sh_entsize, |
Arnaldo Carvalho de Melo | 00a192b | 2009-10-30 16:28:24 -0200 | [diff] [blame^] | 633 | sympltname); |
Arnaldo Carvalho de Melo | 8ce998d | 2009-06-03 00:54:33 -0300 | [diff] [blame] | 634 | if (!f) |
Arnaldo Carvalho de Melo | a25e46c | 2009-07-11 12:18:36 -0300 | [diff] [blame] | 635 | goto out_elf_end; |
Arnaldo Carvalho de Melo | 8ce998d | 2009-06-03 00:54:33 -0300 | [diff] [blame] | 636 | |
| 637 | dso__insert_symbol(self, f); |
| 638 | ++nr; |
| 639 | } |
Arnaldo Carvalho de Melo | 8ce998d | 2009-06-03 00:54:33 -0300 | [diff] [blame] | 640 | } |
| 641 | |
Arnaldo Carvalho de Melo | a25e46c | 2009-07-11 12:18:36 -0300 | [diff] [blame] | 642 | err = 0; |
| 643 | out_elf_end: |
| 644 | elf_end(elf); |
| 645 | out_close: |
| 646 | close(fd); |
| 647 | |
| 648 | if (err == 0) |
| 649 | return nr; |
| 650 | out: |
Arnaldo Carvalho de Melo | 6beba7a | 2009-10-21 17:34:06 -0200 | [diff] [blame] | 651 | pr_warning("%s: problems reading %s PLT info.\n", |
| 652 | __func__, self->long_name); |
Arnaldo Carvalho de Melo | a25e46c | 2009-07-11 12:18:36 -0300 | [diff] [blame] | 653 | return 0; |
Arnaldo Carvalho de Melo | 8ce998d | 2009-06-03 00:54:33 -0300 | [diff] [blame] | 654 | } |
| 655 | |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 656 | static int dso__load_sym(struct dso *self, struct map *map, const char *name, |
| 657 | int fd, symbol_filter_t filter, int kernel, |
Arnaldo Carvalho de Melo | 6beba7a | 2009-10-21 17:34:06 -0200 | [diff] [blame] | 658 | int kmodule) |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 659 | { |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 660 | struct map *curr_map = map; |
| 661 | struct dso *curr_dso = self; |
| 662 | size_t dso_name_len = strlen(self->short_name); |
Mike Galbraith | 6cfcc53 | 2009-07-02 08:08:36 +0200 | [diff] [blame] | 663 | Elf_Data *symstrs, *secstrs; |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 664 | uint32_t nr_syms; |
| 665 | int err = -1; |
Ingo Molnar | 83a0944 | 2009-08-15 12:26:57 +0200 | [diff] [blame] | 666 | uint32_t idx; |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 667 | GElf_Ehdr ehdr; |
| 668 | GElf_Shdr shdr; |
| 669 | Elf_Data *syms; |
| 670 | GElf_Sym sym; |
Arnaldo Carvalho de Melo | a25e46c | 2009-07-11 12:18:36 -0300 | [diff] [blame] | 671 | Elf_Scn *sec, *sec_strndx; |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 672 | Elf *elf; |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 673 | int nr = 0; |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 674 | |
| 675 | elf = elf_begin(fd, ELF_C_READ_MMAP, NULL); |
| 676 | if (elf == NULL) { |
Arnaldo Carvalho de Melo | 6beba7a | 2009-10-21 17:34:06 -0200 | [diff] [blame] | 677 | pr_err("%s: cannot read %s ELF file.\n", __func__, name); |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 678 | goto out_close; |
| 679 | } |
| 680 | |
| 681 | if (gelf_getehdr(elf, &ehdr) == NULL) { |
Arnaldo Carvalho de Melo | 6beba7a | 2009-10-21 17:34:06 -0200 | [diff] [blame] | 682 | pr_err("%s: cannot get elf header.\n", __func__); |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 683 | goto out_elf_end; |
| 684 | } |
| 685 | |
Arnaldo Carvalho de Melo | 8ce998d | 2009-06-03 00:54:33 -0300 | [diff] [blame] | 686 | sec = elf_section_by_name(elf, &ehdr, &shdr, ".symtab", NULL); |
| 687 | if (sec == NULL) { |
Arnaldo Carvalho de Melo | a25e46c | 2009-07-11 12:18:36 -0300 | [diff] [blame] | 688 | sec = elf_section_by_name(elf, &ehdr, &shdr, ".dynsym", NULL); |
| 689 | if (sec == NULL) |
Arnaldo Carvalho de Melo | 8ce998d | 2009-06-03 00:54:33 -0300 | [diff] [blame] | 690 | goto out_elf_end; |
Arnaldo Carvalho de Melo | 8ce998d | 2009-06-03 00:54:33 -0300 | [diff] [blame] | 691 | } |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 692 | |
| 693 | syms = elf_getdata(sec, NULL); |
| 694 | if (syms == NULL) |
| 695 | goto out_elf_end; |
| 696 | |
| 697 | sec = elf_getscn(elf, shdr.sh_link); |
| 698 | if (sec == NULL) |
| 699 | goto out_elf_end; |
| 700 | |
| 701 | symstrs = elf_getdata(sec, NULL); |
| 702 | if (symstrs == NULL) |
| 703 | goto out_elf_end; |
| 704 | |
Mike Galbraith | 6cfcc53 | 2009-07-02 08:08:36 +0200 | [diff] [blame] | 705 | sec_strndx = elf_getscn(elf, ehdr.e_shstrndx); |
| 706 | if (sec_strndx == NULL) |
| 707 | goto out_elf_end; |
| 708 | |
| 709 | secstrs = elf_getdata(sec_strndx, NULL); |
Stoyan Gaydarov | 9b30a26 | 2009-07-30 05:25:29 -0500 | [diff] [blame] | 710 | if (secstrs == NULL) |
Mike Galbraith | 6cfcc53 | 2009-07-02 08:08:36 +0200 | [diff] [blame] | 711 | goto out_elf_end; |
| 712 | |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 713 | nr_syms = shdr.sh_size / shdr.sh_entsize; |
| 714 | |
Arjan van de Ven | e9fbc9d | 2009-06-06 21:22:33 +0200 | [diff] [blame] | 715 | memset(&sym, 0, sizeof(sym)); |
Mike Galbraith | d20ff6b | 2009-07-20 14:01:38 +0200 | [diff] [blame] | 716 | if (!kernel) { |
| 717 | self->adjust_symbols = (ehdr.e_type == ET_EXEC || |
Arnaldo Carvalho de Melo | 30d7a77 | 2009-07-02 21:24:14 -0300 | [diff] [blame] | 718 | elf_section_by_name(elf, &ehdr, &shdr, |
| 719 | ".gnu.prelink_undo", |
| 720 | NULL) != NULL); |
Mike Galbraith | d20ff6b | 2009-07-20 14:01:38 +0200 | [diff] [blame] | 721 | } else self->adjust_symbols = 0; |
| 722 | |
Ingo Molnar | 83a0944 | 2009-08-15 12:26:57 +0200 | [diff] [blame] | 723 | elf_symtab__for_each_symbol(syms, nr_syms, idx, sym) { |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 724 | struct symbol *f; |
Ingo Molnar | 83a0944 | 2009-08-15 12:26:57 +0200 | [diff] [blame] | 725 | const char *elf_name; |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 726 | char *demangled = NULL; |
Mike Galbraith | 6cfcc53 | 2009-07-02 08:08:36 +0200 | [diff] [blame] | 727 | int is_label = elf_sym__is_label(&sym); |
| 728 | const char *section_name; |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 729 | |
Mike Galbraith | 6cfcc53 | 2009-07-02 08:08:36 +0200 | [diff] [blame] | 730 | if (!is_label && !elf_sym__is_function(&sym)) |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 731 | continue; |
| 732 | |
| 733 | sec = elf_getscn(elf, sym.st_shndx); |
| 734 | if (!sec) |
| 735 | goto out_elf_end; |
| 736 | |
| 737 | gelf_getshdr(sec, &shdr); |
Mike Galbraith | 6cfcc53 | 2009-07-02 08:08:36 +0200 | [diff] [blame] | 738 | |
| 739 | if (is_label && !elf_sec__is_text(&shdr, secstrs)) |
| 740 | continue; |
| 741 | |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 742 | elf_name = elf_sym__name(&sym, symstrs); |
Mike Galbraith | 6cfcc53 | 2009-07-02 08:08:36 +0200 | [diff] [blame] | 743 | section_name = elf_sec__name(&shdr, secstrs); |
Ingo Molnar | 0b73da3 | 2009-06-06 15:48:52 +0200 | [diff] [blame] | 744 | |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 745 | if (kernel || kmodule) { |
| 746 | char dso_name[PATH_MAX]; |
| 747 | |
| 748 | if (strcmp(section_name, |
| 749 | curr_dso->short_name + dso_name_len) == 0) |
| 750 | goto new_symbol; |
| 751 | |
| 752 | if (strcmp(section_name, ".text") == 0) { |
| 753 | curr_map = map; |
| 754 | curr_dso = self; |
| 755 | goto new_symbol; |
| 756 | } |
| 757 | |
| 758 | snprintf(dso_name, sizeof(dso_name), |
| 759 | "%s%s", self->short_name, section_name); |
| 760 | |
| 761 | curr_map = kernel_maps__find_by_dso_name(dso_name); |
| 762 | if (curr_map == NULL) { |
| 763 | u64 start = sym.st_value; |
| 764 | |
| 765 | if (kmodule) |
| 766 | start += map->start + shdr.sh_offset; |
| 767 | |
Arnaldo Carvalho de Melo | 00a192b | 2009-10-30 16:28:24 -0200 | [diff] [blame^] | 768 | curr_dso = dso__new(dso_name); |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 769 | if (curr_dso == NULL) |
| 770 | goto out_elf_end; |
| 771 | curr_map = map__new2(start, curr_dso); |
| 772 | if (curr_map == NULL) { |
| 773 | dso__delete(curr_dso); |
| 774 | goto out_elf_end; |
| 775 | } |
Arnaldo Carvalho de Melo | ed52ce2 | 2009-10-19 17:17:57 -0200 | [diff] [blame] | 776 | curr_map->map_ip = identity__map_ip; |
| 777 | curr_map->unmap_ip = identity__map_ip; |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 778 | curr_dso->origin = DSO__ORIG_KERNEL; |
| 779 | kernel_maps__insert(curr_map); |
| 780 | dsos__add(curr_dso); |
| 781 | } else |
| 782 | curr_dso = curr_map->dso; |
| 783 | |
| 784 | goto new_symbol; |
Arnaldo Carvalho de Melo | af427bf | 2009-10-05 14:26:17 -0300 | [diff] [blame] | 785 | } |
| 786 | |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 787 | if (curr_dso->adjust_symbols) { |
Arnaldo Carvalho de Melo | 6beba7a | 2009-10-21 17:34:06 -0200 | [diff] [blame] | 788 | pr_debug2("adjusting symbol: st_value: %Lx sh_addr: " |
| 789 | "%Lx sh_offset: %Lx\n", (u64)sym.st_value, |
| 790 | (u64)shdr.sh_addr, (u64)shdr.sh_offset); |
Arnaldo Carvalho de Melo | f5812a7 | 2009-06-30 11:43:17 -0300 | [diff] [blame] | 791 | sym.st_value -= shdr.sh_addr - shdr.sh_offset; |
Arnaldo Carvalho de Melo | af427bf | 2009-10-05 14:26:17 -0300 | [diff] [blame] | 792 | } |
Arnaldo Carvalho de Melo | 28ac909 | 2009-07-20 14:14:12 -0300 | [diff] [blame] | 793 | /* |
| 794 | * We need to figure out if the object was created from C++ sources |
| 795 | * DWARF DW_compile_unit has this, but we don't always have access |
| 796 | * to it... |
| 797 | */ |
Ingo Molnar | 83a0944 | 2009-08-15 12:26:57 +0200 | [diff] [blame] | 798 | demangled = bfd_demangle(NULL, elf_name, DMGL_PARAMS | DMGL_ANSI); |
Arnaldo Carvalho de Melo | 28ac909 | 2009-07-20 14:14:12 -0300 | [diff] [blame] | 799 | if (demangled != NULL) |
Ingo Molnar | 83a0944 | 2009-08-15 12:26:57 +0200 | [diff] [blame] | 800 | elf_name = demangled; |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 801 | new_symbol: |
Arnaldo Carvalho de Melo | 00a192b | 2009-10-30 16:28:24 -0200 | [diff] [blame^] | 802 | f = symbol__new(sym.st_value, sym.st_size, elf_name); |
Arnaldo Carvalho de Melo | 28ac909 | 2009-07-20 14:14:12 -0300 | [diff] [blame] | 803 | free(demangled); |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 804 | if (!f) |
| 805 | goto out_elf_end; |
| 806 | |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 807 | if (filter && filter(curr_map, f)) |
Arnaldo Carvalho de Melo | 00a192b | 2009-10-30 16:28:24 -0200 | [diff] [blame^] | 808 | symbol__delete(f); |
Arnaldo Carvalho de Melo | 69ee69f | 2009-05-28 14:55:26 -0300 | [diff] [blame] | 809 | else { |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 810 | dso__insert_symbol(curr_dso, f); |
Arnaldo Carvalho de Melo | 69ee69f | 2009-05-28 14:55:26 -0300 | [diff] [blame] | 811 | nr++; |
| 812 | } |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 813 | } |
| 814 | |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 815 | /* |
| 816 | * For misannotated, zeroed, ASM function sizes. |
| 817 | */ |
| 818 | if (nr > 0) |
| 819 | dso__fixup_sym_end(self); |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 820 | err = nr; |
| 821 | out_elf_end: |
| 822 | elf_end(elf); |
| 823 | out_close: |
| 824 | return err; |
| 825 | } |
| 826 | |
Arnaldo Carvalho de Melo | 4d1e00a | 2009-08-05 19:02:49 -0300 | [diff] [blame] | 827 | #define BUILD_ID_SIZE 128 |
| 828 | |
Arnaldo Carvalho de Melo | 6beba7a | 2009-10-21 17:34:06 -0200 | [diff] [blame] | 829 | static char *dso__read_build_id(struct dso *self) |
Arnaldo Carvalho de Melo | 4d1e00a | 2009-08-05 19:02:49 -0300 | [diff] [blame] | 830 | { |
| 831 | int i; |
| 832 | GElf_Ehdr ehdr; |
| 833 | GElf_Shdr shdr; |
| 834 | Elf_Data *build_id_data; |
| 835 | Elf_Scn *sec; |
| 836 | char *build_id = NULL, *bid; |
| 837 | unsigned char *raw; |
| 838 | Elf *elf; |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 839 | int fd = open(self->long_name, O_RDONLY); |
Arnaldo Carvalho de Melo | 4d1e00a | 2009-08-05 19:02:49 -0300 | [diff] [blame] | 840 | |
| 841 | if (fd < 0) |
| 842 | goto out; |
| 843 | |
| 844 | elf = elf_begin(fd, ELF_C_READ_MMAP, NULL); |
| 845 | if (elf == NULL) { |
Arnaldo Carvalho de Melo | 6beba7a | 2009-10-21 17:34:06 -0200 | [diff] [blame] | 846 | pr_err("%s: cannot read %s ELF file.\n", __func__, |
| 847 | self->long_name); |
Arnaldo Carvalho de Melo | 4d1e00a | 2009-08-05 19:02:49 -0300 | [diff] [blame] | 848 | goto out_close; |
| 849 | } |
| 850 | |
| 851 | if (gelf_getehdr(elf, &ehdr) == NULL) { |
Arnaldo Carvalho de Melo | 6beba7a | 2009-10-21 17:34:06 -0200 | [diff] [blame] | 852 | pr_err("%s: cannot get elf header.\n", __func__); |
Arnaldo Carvalho de Melo | 4d1e00a | 2009-08-05 19:02:49 -0300 | [diff] [blame] | 853 | goto out_elf_end; |
| 854 | } |
| 855 | |
| 856 | sec = elf_section_by_name(elf, &ehdr, &shdr, ".note.gnu.build-id", NULL); |
| 857 | if (sec == NULL) |
| 858 | goto out_elf_end; |
| 859 | |
| 860 | build_id_data = elf_getdata(sec, NULL); |
| 861 | if (build_id_data == NULL) |
| 862 | goto out_elf_end; |
| 863 | build_id = malloc(BUILD_ID_SIZE); |
| 864 | if (build_id == NULL) |
| 865 | goto out_elf_end; |
| 866 | raw = build_id_data->d_buf + 16; |
| 867 | bid = build_id; |
| 868 | |
| 869 | for (i = 0; i < 20; ++i) { |
| 870 | sprintf(bid, "%02x", *raw); |
| 871 | ++raw; |
| 872 | bid += 2; |
| 873 | } |
Arnaldo Carvalho de Melo | 6beba7a | 2009-10-21 17:34:06 -0200 | [diff] [blame] | 874 | pr_debug2("%s(%s): %s\n", __func__, self->long_name, build_id); |
Arnaldo Carvalho de Melo | 4d1e00a | 2009-08-05 19:02:49 -0300 | [diff] [blame] | 875 | out_elf_end: |
| 876 | elf_end(elf); |
| 877 | out_close: |
| 878 | close(fd); |
| 879 | out: |
| 880 | return build_id; |
| 881 | } |
| 882 | |
Arnaldo Carvalho de Melo | 94cb9e3 | 2009-08-06 14:43:17 -0300 | [diff] [blame] | 883 | char dso__symtab_origin(const struct dso *self) |
| 884 | { |
| 885 | static const char origin[] = { |
| 886 | [DSO__ORIG_KERNEL] = 'k', |
| 887 | [DSO__ORIG_JAVA_JIT] = 'j', |
| 888 | [DSO__ORIG_FEDORA] = 'f', |
| 889 | [DSO__ORIG_UBUNTU] = 'u', |
| 890 | [DSO__ORIG_BUILDID] = 'b', |
| 891 | [DSO__ORIG_DSO] = 'd', |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 892 | [DSO__ORIG_KMODULE] = 'K', |
Arnaldo Carvalho de Melo | 94cb9e3 | 2009-08-06 14:43:17 -0300 | [diff] [blame] | 893 | }; |
| 894 | |
| 895 | if (self == NULL || self->origin == DSO__ORIG_NOT_FOUND) |
| 896 | return '!'; |
| 897 | return origin[self->origin]; |
| 898 | } |
| 899 | |
Arnaldo Carvalho de Melo | 6beba7a | 2009-10-21 17:34:06 -0200 | [diff] [blame] | 900 | int dso__load(struct dso *self, struct map *map, symbol_filter_t filter) |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 901 | { |
Arnaldo Carvalho de Melo | 4d1e00a | 2009-08-05 19:02:49 -0300 | [diff] [blame] | 902 | int size = PATH_MAX; |
| 903 | char *name = malloc(size), *build_id = NULL; |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 904 | int ret = -1; |
| 905 | int fd; |
| 906 | |
Arnaldo Carvalho de Melo | 66bd842 | 2009-10-28 21:51:21 -0200 | [diff] [blame] | 907 | self->loaded = true; |
| 908 | |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 909 | if (!name) |
| 910 | return -1; |
| 911 | |
Arnaldo Carvalho de Melo | 30d7a77 | 2009-07-02 21:24:14 -0300 | [diff] [blame] | 912 | self->adjust_symbols = 0; |
Arnaldo Carvalho de Melo | f5812a7 | 2009-06-30 11:43:17 -0300 | [diff] [blame] | 913 | |
Arnaldo Carvalho de Melo | 94cb9e3 | 2009-08-06 14:43:17 -0300 | [diff] [blame] | 914 | if (strncmp(self->name, "/tmp/perf-", 10) == 0) { |
Arnaldo Carvalho de Melo | 6beba7a | 2009-10-21 17:34:06 -0200 | [diff] [blame] | 915 | ret = dso__load_perf_map(self, map, filter); |
Arnaldo Carvalho de Melo | 94cb9e3 | 2009-08-06 14:43:17 -0300 | [diff] [blame] | 916 | self->origin = ret > 0 ? DSO__ORIG_JAVA_JIT : |
| 917 | DSO__ORIG_NOT_FOUND; |
| 918 | return ret; |
| 919 | } |
| 920 | |
| 921 | self->origin = DSO__ORIG_FEDORA - 1; |
Pekka Enberg | 80d496b | 2009-06-08 21:12:48 +0300 | [diff] [blame] | 922 | |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 923 | more: |
| 924 | do { |
Arnaldo Carvalho de Melo | 94cb9e3 | 2009-08-06 14:43:17 -0300 | [diff] [blame] | 925 | self->origin++; |
| 926 | switch (self->origin) { |
| 927 | case DSO__ORIG_FEDORA: |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 928 | snprintf(name, size, "/usr/lib/debug%s.debug", |
| 929 | self->long_name); |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 930 | break; |
Arnaldo Carvalho de Melo | 94cb9e3 | 2009-08-06 14:43:17 -0300 | [diff] [blame] | 931 | case DSO__ORIG_UBUNTU: |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 932 | snprintf(name, size, "/usr/lib/debug%s", |
| 933 | self->long_name); |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 934 | break; |
Arnaldo Carvalho de Melo | 94cb9e3 | 2009-08-06 14:43:17 -0300 | [diff] [blame] | 935 | case DSO__ORIG_BUILDID: |
Arnaldo Carvalho de Melo | 6beba7a | 2009-10-21 17:34:06 -0200 | [diff] [blame] | 936 | build_id = dso__read_build_id(self); |
Arnaldo Carvalho de Melo | 4d1e00a | 2009-08-05 19:02:49 -0300 | [diff] [blame] | 937 | if (build_id != NULL) { |
| 938 | snprintf(name, size, |
| 939 | "/usr/lib/debug/.build-id/%.2s/%s.debug", |
| 940 | build_id, build_id + 2); |
| 941 | free(build_id); |
| 942 | break; |
| 943 | } |
Arnaldo Carvalho de Melo | 94cb9e3 | 2009-08-06 14:43:17 -0300 | [diff] [blame] | 944 | self->origin++; |
Arnaldo Carvalho de Melo | 4d1e00a | 2009-08-05 19:02:49 -0300 | [diff] [blame] | 945 | /* Fall thru */ |
Arnaldo Carvalho de Melo | 94cb9e3 | 2009-08-06 14:43:17 -0300 | [diff] [blame] | 946 | case DSO__ORIG_DSO: |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 947 | snprintf(name, size, "%s", self->long_name); |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 948 | break; |
| 949 | |
| 950 | default: |
| 951 | goto out; |
| 952 | } |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 953 | |
| 954 | fd = open(name, O_RDONLY); |
| 955 | } while (fd < 0); |
| 956 | |
Arnaldo Carvalho de Melo | 6beba7a | 2009-10-21 17:34:06 -0200 | [diff] [blame] | 957 | ret = dso__load_sym(self, map, name, fd, filter, 0, 0); |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 958 | close(fd); |
| 959 | |
| 960 | /* |
| 961 | * Some people seem to have debuginfo files _WITHOUT_ debug info!?!? |
| 962 | */ |
| 963 | if (!ret) |
| 964 | goto more; |
| 965 | |
Arnaldo Carvalho de Melo | a25e46c | 2009-07-11 12:18:36 -0300 | [diff] [blame] | 966 | if (ret > 0) { |
Arnaldo Carvalho de Melo | 6beba7a | 2009-10-21 17:34:06 -0200 | [diff] [blame] | 967 | int nr_plt = dso__synthesize_plt_symbols(self); |
Arnaldo Carvalho de Melo | a25e46c | 2009-07-11 12:18:36 -0300 | [diff] [blame] | 968 | if (nr_plt > 0) |
| 969 | ret += nr_plt; |
| 970 | } |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 971 | out: |
| 972 | free(name); |
Arnaldo Carvalho de Melo | 1340e6b | 2009-08-11 17:04:36 -0300 | [diff] [blame] | 973 | if (ret < 0 && strstr(self->name, " (deleted)") != NULL) |
| 974 | return 0; |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 975 | return ret; |
| 976 | } |
| 977 | |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 978 | struct map *kernel_map; |
| 979 | |
| 980 | static void kernel_maps__insert(struct map *map) |
Mike Galbraith | 6cfcc53 | 2009-07-02 08:08:36 +0200 | [diff] [blame] | 981 | { |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 982 | maps__insert(&kernel_maps, map); |
| 983 | } |
Mike Galbraith | 6cfcc53 | 2009-07-02 08:08:36 +0200 | [diff] [blame] | 984 | |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 985 | struct symbol *kernel_maps__find_symbol(u64 ip, struct map **mapp) |
| 986 | { |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 987 | struct map *map = maps__find(&kernel_maps, ip); |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 988 | |
| 989 | if (mapp) |
| 990 | *mapp = map; |
| 991 | |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 992 | if (map) { |
| 993 | ip = map->map_ip(map, ip); |
| 994 | return map->dso->find_symbol(map->dso, ip); |
| 995 | } |
| 996 | |
| 997 | return NULL; |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 998 | } |
| 999 | |
| 1000 | struct map *kernel_maps__find_by_dso_name(const char *name) |
| 1001 | { |
| 1002 | struct rb_node *nd; |
| 1003 | |
| 1004 | for (nd = rb_first(&kernel_maps); nd; nd = rb_next(nd)) { |
| 1005 | struct map *map = rb_entry(nd, struct map, rb_node); |
| 1006 | |
| 1007 | if (map->dso && strcmp(map->dso->name, name) == 0) |
| 1008 | return map; |
| 1009 | } |
| 1010 | |
| 1011 | return NULL; |
| 1012 | } |
| 1013 | |
| 1014 | static int dso__load_module_sym(struct dso *self, struct map *map, |
Arnaldo Carvalho de Melo | 6beba7a | 2009-10-21 17:34:06 -0200 | [diff] [blame] | 1015 | symbol_filter_t filter) |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1016 | { |
| 1017 | int err = 0, fd = open(self->long_name, O_RDONLY); |
| 1018 | |
Arnaldo Carvalho de Melo | 66bd842 | 2009-10-28 21:51:21 -0200 | [diff] [blame] | 1019 | self->loaded = true; |
| 1020 | |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1021 | if (fd < 0) { |
Arnaldo Carvalho de Melo | 6beba7a | 2009-10-21 17:34:06 -0200 | [diff] [blame] | 1022 | pr_err("%s: cannot open %s\n", __func__, self->long_name); |
Mike Galbraith | 6cfcc53 | 2009-07-02 08:08:36 +0200 | [diff] [blame] | 1023 | return err; |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1024 | } |
Mike Galbraith | 6cfcc53 | 2009-07-02 08:08:36 +0200 | [diff] [blame] | 1025 | |
Arnaldo Carvalho de Melo | 6beba7a | 2009-10-21 17:34:06 -0200 | [diff] [blame] | 1026 | err = dso__load_sym(self, map, self->long_name, fd, filter, 0, 1); |
Mike Galbraith | 6cfcc53 | 2009-07-02 08:08:36 +0200 | [diff] [blame] | 1027 | close(fd); |
| 1028 | |
| 1029 | return err; |
| 1030 | } |
| 1031 | |
Arnaldo Carvalho de Melo | 6beba7a | 2009-10-21 17:34:06 -0200 | [diff] [blame] | 1032 | static int dsos__load_modules_sym_dir(char *dirname, symbol_filter_t filter) |
Mike Galbraith | 6cfcc53 | 2009-07-02 08:08:36 +0200 | [diff] [blame] | 1033 | { |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1034 | struct dirent *dent; |
| 1035 | int nr_symbols = 0, err; |
| 1036 | DIR *dir = opendir(dirname); |
Mike Galbraith | 6cfcc53 | 2009-07-02 08:08:36 +0200 | [diff] [blame] | 1037 | |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1038 | if (!dir) { |
Arnaldo Carvalho de Melo | 6beba7a | 2009-10-21 17:34:06 -0200 | [diff] [blame] | 1039 | pr_err("%s: cannot open %s dir\n", __func__, dirname); |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1040 | return -1; |
Mike Galbraith | 6cfcc53 | 2009-07-02 08:08:36 +0200 | [diff] [blame] | 1041 | } |
| 1042 | |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1043 | while ((dent = readdir(dir)) != NULL) { |
| 1044 | char path[PATH_MAX]; |
Mike Galbraith | 6cfcc53 | 2009-07-02 08:08:36 +0200 | [diff] [blame] | 1045 | |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1046 | if (dent->d_type == DT_DIR) { |
| 1047 | if (!strcmp(dent->d_name, ".") || |
| 1048 | !strcmp(dent->d_name, "..")) |
| 1049 | continue; |
Mike Galbraith | 6cfcc53 | 2009-07-02 08:08:36 +0200 | [diff] [blame] | 1050 | |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1051 | snprintf(path, sizeof(path), "%s/%s", |
| 1052 | dirname, dent->d_name); |
Arnaldo Carvalho de Melo | 6beba7a | 2009-10-21 17:34:06 -0200 | [diff] [blame] | 1053 | err = dsos__load_modules_sym_dir(path, filter); |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1054 | if (err < 0) |
| 1055 | goto failure; |
| 1056 | } else { |
| 1057 | char *dot = strrchr(dent->d_name, '.'), |
| 1058 | dso_name[PATH_MAX]; |
| 1059 | struct map *map; |
| 1060 | struct rb_node *last; |
Mike Galbraith | 6cfcc53 | 2009-07-02 08:08:36 +0200 | [diff] [blame] | 1061 | |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1062 | if (dot == NULL || strcmp(dot, ".ko")) |
| 1063 | continue; |
| 1064 | snprintf(dso_name, sizeof(dso_name), "[%.*s]", |
| 1065 | (int)(dot - dent->d_name), dent->d_name); |
Mike Galbraith | 6cfcc53 | 2009-07-02 08:08:36 +0200 | [diff] [blame] | 1066 | |
Arnaldo Carvalho de Melo | a2a99e8 | 2009-10-05 14:26:18 -0300 | [diff] [blame] | 1067 | strxfrchar(dso_name, '-', '_'); |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1068 | map = kernel_maps__find_by_dso_name(dso_name); |
| 1069 | if (map == NULL) |
| 1070 | continue; |
Mike Galbraith | 6cfcc53 | 2009-07-02 08:08:36 +0200 | [diff] [blame] | 1071 | |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1072 | snprintf(path, sizeof(path), "%s/%s", |
| 1073 | dirname, dent->d_name); |
Mike Galbraith | 6cfcc53 | 2009-07-02 08:08:36 +0200 | [diff] [blame] | 1074 | |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1075 | map->dso->long_name = strdup(path); |
| 1076 | if (map->dso->long_name == NULL) |
| 1077 | goto failure; |
| 1078 | |
Arnaldo Carvalho de Melo | 6beba7a | 2009-10-21 17:34:06 -0200 | [diff] [blame] | 1079 | err = dso__load_module_sym(map->dso, map, filter); |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1080 | if (err < 0) |
| 1081 | goto failure; |
| 1082 | last = rb_last(&map->dso->syms); |
| 1083 | if (last) { |
| 1084 | struct symbol *sym; |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 1085 | /* |
| 1086 | * We do this here as well, even having the |
| 1087 | * symbol size found in the symtab because |
| 1088 | * misannotated ASM symbols may have the size |
| 1089 | * set to zero. |
| 1090 | */ |
| 1091 | dso__fixup_sym_end(map->dso); |
| 1092 | |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1093 | sym = rb_entry(last, struct symbol, rb_node); |
| 1094 | map->end = map->start + sym->end; |
Mike Galbraith | 6cfcc53 | 2009-07-02 08:08:36 +0200 | [diff] [blame] | 1095 | } |
| 1096 | } |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1097 | nr_symbols += err; |
Mike Galbraith | 6cfcc53 | 2009-07-02 08:08:36 +0200 | [diff] [blame] | 1098 | } |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1099 | |
| 1100 | return nr_symbols; |
| 1101 | failure: |
| 1102 | closedir(dir); |
| 1103 | return -1; |
Mike Galbraith | 6cfcc53 | 2009-07-02 08:08:36 +0200 | [diff] [blame] | 1104 | } |
| 1105 | |
Arnaldo Carvalho de Melo | 6beba7a | 2009-10-21 17:34:06 -0200 | [diff] [blame] | 1106 | static int dsos__load_modules_sym(symbol_filter_t filter) |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1107 | { |
| 1108 | struct utsname uts; |
| 1109 | char modules_path[PATH_MAX]; |
| 1110 | |
| 1111 | if (uname(&uts) < 0) |
| 1112 | return -1; |
| 1113 | |
| 1114 | snprintf(modules_path, sizeof(modules_path), "/lib/modules/%s/kernel", |
| 1115 | uts.release); |
| 1116 | |
Arnaldo Carvalho de Melo | 6beba7a | 2009-10-21 17:34:06 -0200 | [diff] [blame] | 1117 | return dsos__load_modules_sym_dir(modules_path, filter); |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1118 | } |
| 1119 | |
| 1120 | /* |
| 1121 | * Constructor variant for modules (where we know from /proc/modules where |
| 1122 | * they are loaded) and for vmlinux, where only after we load all the |
| 1123 | * symbols we'll know where it starts and ends. |
| 1124 | */ |
| 1125 | static struct map *map__new2(u64 start, struct dso *dso) |
| 1126 | { |
| 1127 | struct map *self = malloc(sizeof(*self)); |
| 1128 | |
| 1129 | if (self != NULL) { |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1130 | /* |
Arnaldo Carvalho de Melo | afb7b4f | 2009-10-30 16:28:23 -0200 | [diff] [blame] | 1131 | * ->end will be filled after we load all the symbols |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1132 | */ |
Arnaldo Carvalho de Melo | afb7b4f | 2009-10-30 16:28:23 -0200 | [diff] [blame] | 1133 | map__init(self, start, 0, 0, dso); |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1134 | } |
Arnaldo Carvalho de Melo | afb7b4f | 2009-10-30 16:28:23 -0200 | [diff] [blame] | 1135 | |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1136 | return self; |
| 1137 | } |
| 1138 | |
Arnaldo Carvalho de Melo | 00a192b | 2009-10-30 16:28:24 -0200 | [diff] [blame^] | 1139 | static int dsos__load_modules(void) |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1140 | { |
| 1141 | char *line = NULL; |
| 1142 | size_t n; |
| 1143 | FILE *file = fopen("/proc/modules", "r"); |
| 1144 | struct map *map; |
| 1145 | |
| 1146 | if (file == NULL) |
| 1147 | return -1; |
| 1148 | |
| 1149 | while (!feof(file)) { |
| 1150 | char name[PATH_MAX]; |
| 1151 | u64 start; |
| 1152 | struct dso *dso; |
| 1153 | char *sep; |
| 1154 | int line_len; |
| 1155 | |
| 1156 | line_len = getline(&line, &n, file); |
| 1157 | if (line_len < 0) |
| 1158 | break; |
| 1159 | |
| 1160 | if (!line) |
| 1161 | goto out_failure; |
| 1162 | |
| 1163 | line[--line_len] = '\0'; /* \n */ |
| 1164 | |
| 1165 | sep = strrchr(line, 'x'); |
| 1166 | if (sep == NULL) |
| 1167 | continue; |
| 1168 | |
| 1169 | hex2u64(sep + 1, &start); |
| 1170 | |
| 1171 | sep = strchr(line, ' '); |
| 1172 | if (sep == NULL) |
| 1173 | continue; |
| 1174 | |
| 1175 | *sep = '\0'; |
| 1176 | |
| 1177 | snprintf(name, sizeof(name), "[%s]", line); |
Arnaldo Carvalho de Melo | 00a192b | 2009-10-30 16:28:24 -0200 | [diff] [blame^] | 1178 | dso = dso__new(name); |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1179 | |
| 1180 | if (dso == NULL) |
| 1181 | goto out_delete_line; |
| 1182 | |
| 1183 | map = map__new2(start, dso); |
| 1184 | if (map == NULL) { |
| 1185 | dso__delete(dso); |
| 1186 | goto out_delete_line; |
| 1187 | } |
| 1188 | |
| 1189 | dso->origin = DSO__ORIG_KMODULE; |
| 1190 | kernel_maps__insert(map); |
| 1191 | dsos__add(dso); |
| 1192 | } |
| 1193 | |
| 1194 | free(line); |
| 1195 | fclose(file); |
| 1196 | |
Arnaldo Carvalho de Melo | af427bf | 2009-10-05 14:26:17 -0300 | [diff] [blame] | 1197 | return 0; |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1198 | |
| 1199 | out_delete_line: |
| 1200 | free(line); |
| 1201 | out_failure: |
| 1202 | return -1; |
| 1203 | } |
| 1204 | |
| 1205 | static int dso__load_vmlinux(struct dso *self, struct map *map, |
Arnaldo Carvalho de Melo | 6beba7a | 2009-10-21 17:34:06 -0200 | [diff] [blame] | 1206 | const char *vmlinux, symbol_filter_t filter) |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 1207 | { |
| 1208 | int err, fd = open(vmlinux, O_RDONLY); |
| 1209 | |
Arnaldo Carvalho de Melo | 66bd842 | 2009-10-28 21:51:21 -0200 | [diff] [blame] | 1210 | self->loaded = true; |
| 1211 | |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 1212 | if (fd < 0) |
| 1213 | return -1; |
| 1214 | |
Arnaldo Carvalho de Melo | 6beba7a | 2009-10-21 17:34:06 -0200 | [diff] [blame] | 1215 | err = dso__load_sym(self, map, self->long_name, fd, filter, 1, 0); |
Mike Galbraith | 6cfcc53 | 2009-07-02 08:08:36 +0200 | [diff] [blame] | 1216 | |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 1217 | close(fd); |
| 1218 | |
| 1219 | return err; |
| 1220 | } |
| 1221 | |
Arnaldo Carvalho de Melo | 00a192b | 2009-10-30 16:28:24 -0200 | [diff] [blame^] | 1222 | int dsos__load_kernel(const char *vmlinux, symbol_filter_t filter, |
| 1223 | int use_modules) |
Arnaldo Carvalho de Melo | a827c87 | 2009-05-28 14:55:19 -0300 | [diff] [blame] | 1224 | { |
| 1225 | int err = -1; |
Arnaldo Carvalho de Melo | 00a192b | 2009-10-30 16:28:24 -0200 | [diff] [blame^] | 1226 | struct dso *dso = dso__new(vmlinux); |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1227 | |
| 1228 | if (dso == NULL) |
| 1229 | return -1; |
| 1230 | |
| 1231 | dso->short_name = "[kernel]"; |
| 1232 | kernel_map = map__new2(0, dso); |
| 1233 | if (kernel_map == NULL) |
| 1234 | goto out_delete_dso; |
| 1235 | |
Arnaldo Carvalho de Melo | ed52ce2 | 2009-10-19 17:17:57 -0200 | [diff] [blame] | 1236 | kernel_map->map_ip = kernel_map->unmap_ip = identity__map_ip; |
Arnaldo Carvalho de Melo | a827c87 | 2009-05-28 14:55:19 -0300 | [diff] [blame] | 1237 | |
Arnaldo Carvalho de Melo | 00a192b | 2009-10-30 16:28:24 -0200 | [diff] [blame^] | 1238 | if (use_modules && dsos__load_modules() < 0) { |
Arnaldo Carvalho de Melo | 6beba7a | 2009-10-21 17:34:06 -0200 | [diff] [blame] | 1239 | pr_warning("Failed to load list of modules in use! " |
| 1240 | "Continuing...\n"); |
Arnaldo Carvalho de Melo | af427bf | 2009-10-05 14:26:17 -0300 | [diff] [blame] | 1241 | use_modules = 0; |
| 1242 | } |
| 1243 | |
Mike Galbraith | 6cfcc53 | 2009-07-02 08:08:36 +0200 | [diff] [blame] | 1244 | if (vmlinux) { |
Arnaldo Carvalho de Melo | 6beba7a | 2009-10-21 17:34:06 -0200 | [diff] [blame] | 1245 | err = dso__load_vmlinux(dso, kernel_map, vmlinux, filter); |
Mike Galbraith | 508c4d0 | 2009-09-23 11:20:58 +0200 | [diff] [blame] | 1246 | if (err > 0 && use_modules) { |
Arnaldo Carvalho de Melo | 6beba7a | 2009-10-21 17:34:06 -0200 | [diff] [blame] | 1247 | int syms = dsos__load_modules_sym(filter); |
Mike Galbraith | 508c4d0 | 2009-09-23 11:20:58 +0200 | [diff] [blame] | 1248 | |
Arnaldo Carvalho de Melo | af427bf | 2009-10-05 14:26:17 -0300 | [diff] [blame] | 1249 | if (syms < 0) |
Arnaldo Carvalho de Melo | 6beba7a | 2009-10-21 17:34:06 -0200 | [diff] [blame] | 1250 | pr_warning("Failed to read module symbols!" |
| 1251 | " Continuing...\n"); |
Arnaldo Carvalho de Melo | af427bf | 2009-10-05 14:26:17 -0300 | [diff] [blame] | 1252 | else |
| 1253 | err += syms; |
Mike Galbraith | 508c4d0 | 2009-09-23 11:20:58 +0200 | [diff] [blame] | 1254 | } |
Mike Galbraith | 6cfcc53 | 2009-07-02 08:08:36 +0200 | [diff] [blame] | 1255 | } |
Arnaldo Carvalho de Melo | a827c87 | 2009-05-28 14:55:19 -0300 | [diff] [blame] | 1256 | |
Mike Galbraith | 9974f49 | 2009-07-02 08:05:58 +0200 | [diff] [blame] | 1257 | if (err <= 0) |
Arnaldo Carvalho de Melo | 6beba7a | 2009-10-21 17:34:06 -0200 | [diff] [blame] | 1258 | err = kernel_maps__load_kallsyms(filter, use_modules); |
Arnaldo Carvalho de Melo | a827c87 | 2009-05-28 14:55:19 -0300 | [diff] [blame] | 1259 | |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1260 | if (err > 0) { |
| 1261 | struct rb_node *node = rb_first(&dso->syms); |
| 1262 | struct symbol *sym = rb_entry(node, struct symbol, rb_node); |
| 1263 | |
| 1264 | kernel_map->start = sym->start; |
| 1265 | node = rb_last(&dso->syms); |
| 1266 | sym = rb_entry(node, struct symbol, rb_node); |
| 1267 | kernel_map->end = sym->end; |
| 1268 | |
| 1269 | dso->origin = DSO__ORIG_KERNEL; |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 1270 | kernel_maps__insert(kernel_map); |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1271 | /* |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 1272 | * Now that we have all sorted out, just set the ->end of all |
| 1273 | * maps: |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1274 | */ |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 1275 | kernel_maps__fixup_end(); |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1276 | dsos__add(dso); |
Arnaldo Carvalho de Melo | af427bf | 2009-10-05 14:26:17 -0300 | [diff] [blame] | 1277 | |
Arnaldo Carvalho de Melo | 6beba7a | 2009-10-21 17:34:06 -0200 | [diff] [blame] | 1278 | if (verbose) |
| 1279 | kernel_maps__fprintf(stderr); |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1280 | } |
Arnaldo Carvalho de Melo | 94cb9e3 | 2009-08-06 14:43:17 -0300 | [diff] [blame] | 1281 | |
Arnaldo Carvalho de Melo | a827c87 | 2009-05-28 14:55:19 -0300 | [diff] [blame] | 1282 | return err; |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1283 | |
| 1284 | out_delete_dso: |
| 1285 | dso__delete(dso); |
| 1286 | return -1; |
Arnaldo Carvalho de Melo | a827c87 | 2009-05-28 14:55:19 -0300 | [diff] [blame] | 1287 | } |
| 1288 | |
Frederic Weisbecker | cd84c2a | 2009-08-12 10:03:49 +0200 | [diff] [blame] | 1289 | LIST_HEAD(dsos); |
Frederic Weisbecker | cd84c2a | 2009-08-12 10:03:49 +0200 | [diff] [blame] | 1290 | struct dso *vdso; |
Frederic Weisbecker | cd84c2a | 2009-08-12 10:03:49 +0200 | [diff] [blame] | 1291 | |
Ingo Molnar | 83a0944 | 2009-08-15 12:26:57 +0200 | [diff] [blame] | 1292 | const char *vmlinux_name = "vmlinux"; |
Frederic Weisbecker | cd84c2a | 2009-08-12 10:03:49 +0200 | [diff] [blame] | 1293 | int modules; |
| 1294 | |
| 1295 | static void dsos__add(struct dso *dso) |
| 1296 | { |
| 1297 | list_add_tail(&dso->node, &dsos); |
| 1298 | } |
| 1299 | |
| 1300 | static struct dso *dsos__find(const char *name) |
| 1301 | { |
| 1302 | struct dso *pos; |
| 1303 | |
| 1304 | list_for_each_entry(pos, &dsos, node) |
| 1305 | if (strcmp(pos->name, name) == 0) |
| 1306 | return pos; |
| 1307 | return NULL; |
| 1308 | } |
| 1309 | |
Arnaldo Carvalho de Melo | 00a192b | 2009-10-30 16:28:24 -0200 | [diff] [blame^] | 1310 | struct dso *dsos__findnew(const char *name) |
Frederic Weisbecker | cd84c2a | 2009-08-12 10:03:49 +0200 | [diff] [blame] | 1311 | { |
| 1312 | struct dso *dso = dsos__find(name); |
Frederic Weisbecker | cd84c2a | 2009-08-12 10:03:49 +0200 | [diff] [blame] | 1313 | |
Arnaldo Carvalho de Melo | e420499 | 2009-10-20 14:25:40 -0200 | [diff] [blame] | 1314 | if (!dso) { |
Arnaldo Carvalho de Melo | 00a192b | 2009-10-30 16:28:24 -0200 | [diff] [blame^] | 1315 | dso = dso__new(name); |
Arnaldo Carvalho de Melo | 66bd842 | 2009-10-28 21:51:21 -0200 | [diff] [blame] | 1316 | if (dso != NULL) |
Arnaldo Carvalho de Melo | e420499 | 2009-10-20 14:25:40 -0200 | [diff] [blame] | 1317 | dsos__add(dso); |
Arnaldo Carvalho de Melo | 66bd842 | 2009-10-28 21:51:21 -0200 | [diff] [blame] | 1318 | } |
Frederic Weisbecker | cd84c2a | 2009-08-12 10:03:49 +0200 | [diff] [blame] | 1319 | |
| 1320 | return dso; |
Frederic Weisbecker | cd84c2a | 2009-08-12 10:03:49 +0200 | [diff] [blame] | 1321 | } |
| 1322 | |
| 1323 | void dsos__fprintf(FILE *fp) |
| 1324 | { |
| 1325 | struct dso *pos; |
| 1326 | |
| 1327 | list_for_each_entry(pos, &dsos, node) |
| 1328 | dso__fprintf(pos, fp); |
| 1329 | } |
| 1330 | |
Arnaldo Carvalho de Melo | 00a192b | 2009-10-30 16:28:24 -0200 | [diff] [blame^] | 1331 | int load_kernel(symbol_filter_t filter) |
Frederic Weisbecker | cd84c2a | 2009-08-12 10:03:49 +0200 | [diff] [blame] | 1332 | { |
Arnaldo Carvalho de Melo | 00a192b | 2009-10-30 16:28:24 -0200 | [diff] [blame^] | 1333 | if (dsos__load_kernel(vmlinux_name, filter, modules) <= 0) |
Frederic Weisbecker | cd84c2a | 2009-08-12 10:03:49 +0200 | [diff] [blame] | 1334 | return -1; |
| 1335 | |
Arnaldo Carvalho de Melo | 00a192b | 2009-10-30 16:28:24 -0200 | [diff] [blame^] | 1336 | vdso = dso__new("[vdso]"); |
Frederic Weisbecker | cd84c2a | 2009-08-12 10:03:49 +0200 | [diff] [blame] | 1337 | if (!vdso) |
| 1338 | return -1; |
| 1339 | |
Frederic Weisbecker | cd84c2a | 2009-08-12 10:03:49 +0200 | [diff] [blame] | 1340 | dsos__add(vdso); |
| 1341 | |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1342 | return 0; |
Frederic Weisbecker | cd84c2a | 2009-08-12 10:03:49 +0200 | [diff] [blame] | 1343 | } |
| 1344 | |
Arnaldo Carvalho de Melo | 00a192b | 2009-10-30 16:28:24 -0200 | [diff] [blame^] | 1345 | void symbol__init(unsigned int priv_size) |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 1346 | { |
| 1347 | elf_version(EV_CURRENT); |
Arnaldo Carvalho de Melo | 00a192b | 2009-10-30 16:28:24 -0200 | [diff] [blame^] | 1348 | symbol__priv_size = priv_size; |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 1349 | } |