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 | f1617b4 | 2009-11-18 20:20:52 -0200 | [diff] [blame] | 12 | #include <limits.h> |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 13 | #include <sys/utsname.h> |
Peter Zijlstra | 2cdbc46 | 2009-08-05 14:05:16 +0200 | [diff] [blame] | 14 | |
Arnaldo Carvalho de Melo | c12e15e | 2009-11-21 14:31:25 -0200 | [diff] [blame] | 15 | #ifndef NT_GNU_BUILD_ID |
| 16 | #define NT_GNU_BUILD_ID 3 |
| 17 | #endif |
| 18 | |
Arnaldo Carvalho de Melo | 94cb9e3 | 2009-08-06 14:43:17 -0300 | [diff] [blame] | 19 | enum dso_origin { |
| 20 | DSO__ORIG_KERNEL = 0, |
| 21 | DSO__ORIG_JAVA_JIT, |
| 22 | DSO__ORIG_FEDORA, |
| 23 | DSO__ORIG_UBUNTU, |
| 24 | DSO__ORIG_BUILDID, |
| 25 | DSO__ORIG_DSO, |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 26 | DSO__ORIG_KMODULE, |
Arnaldo Carvalho de Melo | 94cb9e3 | 2009-08-06 14:43:17 -0300 | [diff] [blame] | 27 | DSO__ORIG_NOT_FOUND, |
| 28 | }; |
| 29 | |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 30 | static void dsos__add(struct dso *dso); |
| 31 | static struct dso *dsos__find(const char *name); |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 32 | static struct map *map__new2(u64 start, struct dso *dso); |
| 33 | static void kernel_maps__insert(struct map *map); |
Arnaldo Carvalho de Melo | c338aee | 2009-11-20 20:51:27 -0200 | [diff] [blame] | 34 | static int dso__load_kernel_sym(struct dso *self, struct map *map, |
| 35 | symbol_filter_t filter); |
Arnaldo Carvalho de Melo | 00a192b | 2009-10-30 16:28:24 -0200 | [diff] [blame] | 36 | unsigned int symbol__priv_size; |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 37 | |
Arnaldo Carvalho de Melo | af427bf | 2009-10-05 14:26:17 -0300 | [diff] [blame] | 38 | static struct rb_root kernel_maps; |
| 39 | |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 40 | static void dso__fixup_sym_end(struct dso *self) |
Arnaldo Carvalho de Melo | af427bf | 2009-10-05 14:26:17 -0300 | [diff] [blame] | 41 | { |
| 42 | struct rb_node *nd, *prevnd = rb_first(&self->syms); |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 43 | struct symbol *curr, *prev; |
Arnaldo Carvalho de Melo | af427bf | 2009-10-05 14:26:17 -0300 | [diff] [blame] | 44 | |
| 45 | if (prevnd == NULL) |
| 46 | return; |
| 47 | |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 48 | curr = rb_entry(prevnd, struct symbol, rb_node); |
| 49 | |
Arnaldo Carvalho de Melo | af427bf | 2009-10-05 14:26:17 -0300 | [diff] [blame] | 50 | for (nd = rb_next(prevnd); nd; nd = rb_next(nd)) { |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 51 | prev = curr; |
| 52 | curr = rb_entry(nd, struct symbol, rb_node); |
Arnaldo Carvalho de Melo | af427bf | 2009-10-05 14:26:17 -0300 | [diff] [blame] | 53 | |
| 54 | if (prev->end == prev->start) |
| 55 | prev->end = curr->start - 1; |
Arnaldo Carvalho de Melo | af427bf | 2009-10-05 14:26:17 -0300 | [diff] [blame] | 56 | } |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 57 | |
| 58 | /* Last entry */ |
| 59 | if (curr->end == curr->start) |
| 60 | curr->end = roundup(curr->start, 4096); |
Arnaldo Carvalho de Melo | af427bf | 2009-10-05 14:26:17 -0300 | [diff] [blame] | 61 | } |
| 62 | |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 63 | static void kernel_maps__fixup_end(void) |
Arnaldo Carvalho de Melo | af427bf | 2009-10-05 14:26:17 -0300 | [diff] [blame] | 64 | { |
| 65 | struct map *prev, *curr; |
| 66 | struct rb_node *nd, *prevnd = rb_first(&kernel_maps); |
| 67 | |
| 68 | if (prevnd == NULL) |
| 69 | return; |
| 70 | |
| 71 | curr = rb_entry(prevnd, struct map, rb_node); |
Arnaldo Carvalho de Melo | af427bf | 2009-10-05 14:26:17 -0300 | [diff] [blame] | 72 | |
| 73 | for (nd = rb_next(prevnd); nd; nd = rb_next(nd)) { |
| 74 | prev = curr; |
| 75 | curr = rb_entry(nd, struct map, rb_node); |
| 76 | prev->end = curr->start - 1; |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 77 | } |
Arnaldo Carvalho de Melo | 90c8321 | 2009-11-21 14:31:24 -0200 | [diff] [blame] | 78 | |
| 79 | /* |
| 80 | * We still haven't the actual symbols, so guess the |
| 81 | * last map final address. |
| 82 | */ |
| 83 | curr->end = ~0UL; |
Arnaldo Carvalho de Melo | af427bf | 2009-10-05 14:26:17 -0300 | [diff] [blame] | 84 | } |
| 85 | |
Arnaldo Carvalho de Melo | 00a192b | 2009-10-30 16:28:24 -0200 | [diff] [blame] | 86 | 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] | 87 | { |
Arnaldo Carvalho de Melo | 0085c954 | 2009-05-28 14:55:13 -0300 | [diff] [blame] | 88 | size_t namelen = strlen(name) + 1; |
Arnaldo Carvalho de Melo | 00a192b | 2009-10-30 16:28:24 -0200 | [diff] [blame] | 89 | struct symbol *self = calloc(1, (symbol__priv_size + |
| 90 | sizeof(*self) + namelen)); |
Ingo Molnar | 0b73da3 | 2009-06-06 15:48:52 +0200 | [diff] [blame] | 91 | if (!self) |
| 92 | return NULL; |
| 93 | |
Arnaldo Carvalho de Melo | 00a192b | 2009-10-30 16:28:24 -0200 | [diff] [blame] | 94 | if (symbol__priv_size) { |
| 95 | memset(self, 0, symbol__priv_size); |
| 96 | self = ((void *)self) + symbol__priv_size; |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 97 | } |
Ingo Molnar | 0b73da3 | 2009-06-06 15:48:52 +0200 | [diff] [blame] | 98 | self->start = start; |
Mike Galbraith | 6cfcc53 | 2009-07-02 08:08:36 +0200 | [diff] [blame] | 99 | self->end = len ? start + len - 1 : start; |
Arnaldo Carvalho de Melo | e420499 | 2009-10-20 14:25:40 -0200 | [diff] [blame] | 100 | |
Arnaldo Carvalho de Melo | 6beba7a | 2009-10-21 17:34:06 -0200 | [diff] [blame] | 101 | 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] | 102 | |
Ingo Molnar | 0b73da3 | 2009-06-06 15:48:52 +0200 | [diff] [blame] | 103 | memcpy(self->name, name, namelen); |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 104 | |
| 105 | return self; |
| 106 | } |
| 107 | |
Arnaldo Carvalho de Melo | 00a192b | 2009-10-30 16:28:24 -0200 | [diff] [blame] | 108 | static void symbol__delete(struct symbol *self) |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 109 | { |
Arnaldo Carvalho de Melo | 00a192b | 2009-10-30 16:28:24 -0200 | [diff] [blame] | 110 | free(((void *)self) - symbol__priv_size); |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 111 | } |
| 112 | |
| 113 | static size_t symbol__fprintf(struct symbol *self, FILE *fp) |
| 114 | { |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 115 | return fprintf(fp, " %llx-%llx %s\n", |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 116 | self->start, self->end, self->name); |
| 117 | } |
| 118 | |
Arnaldo Carvalho de Melo | cfc10d3 | 2009-11-17 15:40:53 -0200 | [diff] [blame] | 119 | static void dso__set_long_name(struct dso *self, char *name) |
| 120 | { |
Arnaldo Carvalho de Melo | ef6ae72 | 2009-11-20 20:51:29 -0200 | [diff] [blame] | 121 | if (name == NULL) |
| 122 | return; |
Arnaldo Carvalho de Melo | cfc10d3 | 2009-11-17 15:40:53 -0200 | [diff] [blame] | 123 | self->long_name = name; |
| 124 | self->long_name_len = strlen(name); |
| 125 | } |
| 126 | |
| 127 | static void dso__set_basename(struct dso *self) |
| 128 | { |
| 129 | self->short_name = basename(self->long_name); |
| 130 | } |
| 131 | |
Arnaldo Carvalho de Melo | 00a192b | 2009-10-30 16:28:24 -0200 | [diff] [blame] | 132 | struct dso *dso__new(const char *name) |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 133 | { |
| 134 | struct dso *self = malloc(sizeof(*self) + strlen(name) + 1); |
| 135 | |
| 136 | if (self != NULL) { |
| 137 | strcpy(self->name, name); |
Arnaldo Carvalho de Melo | cfc10d3 | 2009-11-17 15:40:53 -0200 | [diff] [blame] | 138 | dso__set_long_name(self, self->name); |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 139 | self->short_name = self->name; |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 140 | self->syms = RB_ROOT; |
Peter Zijlstra | fc54db5 | 2009-06-05 14:04:59 +0200 | [diff] [blame] | 141 | self->find_symbol = dso__find_symbol; |
Arnaldo Carvalho de Melo | 52d422d | 2009-07-10 22:47:28 -0300 | [diff] [blame] | 142 | self->slen_calculated = 0; |
Arnaldo Carvalho de Melo | 94cb9e3 | 2009-08-06 14:43:17 -0300 | [diff] [blame] | 143 | self->origin = DSO__ORIG_NOT_FOUND; |
Arnaldo Carvalho de Melo | 8d06367 | 2009-11-04 18:50:43 -0200 | [diff] [blame] | 144 | self->loaded = 0; |
| 145 | self->has_build_id = 0; |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 146 | } |
| 147 | |
| 148 | return self; |
| 149 | } |
| 150 | |
| 151 | static void dso__delete_symbols(struct dso *self) |
| 152 | { |
| 153 | struct symbol *pos; |
| 154 | struct rb_node *next = rb_first(&self->syms); |
| 155 | |
| 156 | while (next) { |
| 157 | pos = rb_entry(next, struct symbol, rb_node); |
| 158 | next = rb_next(&pos->rb_node); |
Arnaldo Carvalho de Melo | c8c9652 | 2009-06-01 17:50:57 -0300 | [diff] [blame] | 159 | rb_erase(&pos->rb_node, &self->syms); |
Arnaldo Carvalho de Melo | 00a192b | 2009-10-30 16:28:24 -0200 | [diff] [blame] | 160 | symbol__delete(pos); |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 161 | } |
| 162 | } |
| 163 | |
| 164 | void dso__delete(struct dso *self) |
| 165 | { |
| 166 | dso__delete_symbols(self); |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 167 | if (self->long_name != self->name) |
| 168 | free(self->long_name); |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 169 | free(self); |
| 170 | } |
| 171 | |
Arnaldo Carvalho de Melo | 8d06367 | 2009-11-04 18:50:43 -0200 | [diff] [blame] | 172 | void dso__set_build_id(struct dso *self, void *build_id) |
| 173 | { |
| 174 | memcpy(self->build_id, build_id, sizeof(self->build_id)); |
| 175 | self->has_build_id = 1; |
| 176 | } |
| 177 | |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 178 | static void dso__insert_symbol(struct dso *self, struct symbol *sym) |
| 179 | { |
| 180 | struct rb_node **p = &self->syms.rb_node; |
| 181 | struct rb_node *parent = NULL; |
Paul Mackerras | 9cffa8d | 2009-06-19 22:21:42 +1000 | [diff] [blame] | 182 | const u64 ip = sym->start; |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 183 | struct symbol *s; |
| 184 | |
| 185 | while (*p != NULL) { |
| 186 | parent = *p; |
| 187 | s = rb_entry(parent, struct symbol, rb_node); |
| 188 | if (ip < s->start) |
| 189 | p = &(*p)->rb_left; |
| 190 | else |
| 191 | p = &(*p)->rb_right; |
| 192 | } |
| 193 | rb_link_node(&sym->rb_node, parent, p); |
| 194 | rb_insert_color(&sym->rb_node, &self->syms); |
| 195 | } |
| 196 | |
Paul Mackerras | 9cffa8d | 2009-06-19 22:21:42 +1000 | [diff] [blame] | 197 | struct symbol *dso__find_symbol(struct dso *self, u64 ip) |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 198 | { |
| 199 | struct rb_node *n; |
| 200 | |
| 201 | if (self == NULL) |
| 202 | return NULL; |
| 203 | |
| 204 | n = self->syms.rb_node; |
| 205 | |
| 206 | while (n) { |
| 207 | struct symbol *s = rb_entry(n, struct symbol, rb_node); |
| 208 | |
| 209 | if (ip < s->start) |
| 210 | n = n->rb_left; |
| 211 | else if (ip > s->end) |
| 212 | n = n->rb_right; |
| 213 | else |
| 214 | return s; |
| 215 | } |
| 216 | |
| 217 | return NULL; |
| 218 | } |
| 219 | |
Arnaldo Carvalho de Melo | 8d06367 | 2009-11-04 18:50:43 -0200 | [diff] [blame] | 220 | int build_id__sprintf(u8 *self, int len, char *bf) |
| 221 | { |
| 222 | char *bid = bf; |
| 223 | u8 *raw = self; |
| 224 | int i; |
| 225 | |
| 226 | for (i = 0; i < len; ++i) { |
| 227 | sprintf(bid, "%02x", *raw); |
| 228 | ++raw; |
| 229 | bid += 2; |
| 230 | } |
| 231 | |
| 232 | return raw - self; |
| 233 | } |
| 234 | |
Arnaldo Carvalho de Melo | 9e03eb2 | 2009-11-16 16:32:44 -0200 | [diff] [blame] | 235 | size_t dso__fprintf_buildid(struct dso *self, FILE *fp) |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 236 | { |
Arnaldo Carvalho de Melo | 8d06367 | 2009-11-04 18:50:43 -0200 | [diff] [blame] | 237 | char sbuild_id[BUILD_ID_SIZE * 2 + 1]; |
Arnaldo Carvalho de Melo | 8d06367 | 2009-11-04 18:50:43 -0200 | [diff] [blame] | 238 | |
| 239 | build_id__sprintf(self->build_id, sizeof(self->build_id), sbuild_id); |
Arnaldo Carvalho de Melo | 9e03eb2 | 2009-11-16 16:32:44 -0200 | [diff] [blame] | 240 | return fprintf(fp, "%s", sbuild_id); |
| 241 | } |
| 242 | |
| 243 | size_t dso__fprintf(struct dso *self, FILE *fp) |
| 244 | { |
| 245 | struct rb_node *nd; |
| 246 | size_t ret = fprintf(fp, "dso: %s (", self->short_name); |
| 247 | |
| 248 | ret += dso__fprintf_buildid(self, fp); |
| 249 | ret += fprintf(fp, ")\n"); |
Arnaldo Carvalho de Melo | 8d06367 | 2009-11-04 18:50:43 -0200 | [diff] [blame] | 250 | |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 251 | for (nd = rb_first(&self->syms); nd; nd = rb_next(nd)) { |
| 252 | struct symbol *pos = rb_entry(nd, struct symbol, rb_node); |
| 253 | ret += symbol__fprintf(pos, fp); |
| 254 | } |
| 255 | |
| 256 | return ret; |
| 257 | } |
| 258 | |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 259 | /* |
| 260 | * Loads the function entries in /proc/kallsyms into kernel_map->dso, |
| 261 | * so that we can in the next step set the symbol ->end address and then |
| 262 | * call kernel_maps__split_kallsyms. |
| 263 | */ |
Arnaldo Carvalho de Melo | 6beba7a | 2009-10-21 17:34:06 -0200 | [diff] [blame] | 264 | static int kernel_maps__load_all_kallsyms(void) |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 265 | { |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 266 | char *line = NULL; |
| 267 | size_t n; |
| 268 | FILE *file = fopen("/proc/kallsyms", "r"); |
| 269 | |
| 270 | if (file == NULL) |
| 271 | goto out_failure; |
| 272 | |
| 273 | while (!feof(file)) { |
Paul Mackerras | 9cffa8d | 2009-06-19 22:21:42 +1000 | [diff] [blame] | 274 | u64 start; |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 275 | struct symbol *sym; |
| 276 | int line_len, len; |
| 277 | char symbol_type; |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 278 | char *symbol_name; |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 279 | |
| 280 | line_len = getline(&line, &n, file); |
| 281 | if (line_len < 0) |
| 282 | break; |
| 283 | |
| 284 | if (!line) |
| 285 | goto out_failure; |
| 286 | |
| 287 | line[--line_len] = '\0'; /* \n */ |
| 288 | |
Arnaldo Carvalho de Melo | a0055ae | 2009-06-01 17:50:19 -0300 | [diff] [blame] | 289 | len = hex2u64(line, &start); |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 290 | |
| 291 | len++; |
| 292 | if (len + 2 >= line_len) |
| 293 | continue; |
| 294 | |
| 295 | symbol_type = toupper(line[len]); |
| 296 | /* |
| 297 | * We're interested only in code ('T'ext) |
| 298 | */ |
| 299 | if (symbol_type != 'T' && symbol_type != 'W') |
| 300 | continue; |
Arnaldo Carvalho de Melo | af427bf | 2009-10-05 14:26:17 -0300 | [diff] [blame] | 301 | |
| 302 | symbol_name = line + len + 2; |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 303 | /* |
| 304 | * Will fix up the end later, when we have all symbols sorted. |
| 305 | */ |
Arnaldo Carvalho de Melo | 00a192b | 2009-10-30 16:28:24 -0200 | [diff] [blame] | 306 | sym = symbol__new(start, 0, symbol_name); |
Arnaldo Carvalho de Melo | af427bf | 2009-10-05 14:26:17 -0300 | [diff] [blame] | 307 | |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 308 | if (sym == NULL) |
| 309 | goto out_delete_line; |
| 310 | |
Arnaldo Carvalho de Melo | 8216416 | 2009-11-16 13:48:11 -0200 | [diff] [blame] | 311 | /* |
| 312 | * We will pass the symbols to the filter later, in |
| 313 | * kernel_maps__split_kallsyms, when we have split the |
| 314 | * maps per module |
| 315 | */ |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 316 | dso__insert_symbol(kernel_map->dso, sym); |
| 317 | } |
| 318 | |
| 319 | free(line); |
| 320 | fclose(file); |
| 321 | |
| 322 | return 0; |
| 323 | |
| 324 | out_delete_line: |
| 325 | free(line); |
| 326 | out_failure: |
| 327 | return -1; |
| 328 | } |
| 329 | |
| 330 | /* |
| 331 | * Split the symbols into maps, making sure there are no overlaps, i.e. the |
| 332 | * kernel range is broken in several maps, named [kernel].N, as we don't have |
| 333 | * the original ELF section names vmlinux have. |
| 334 | */ |
Arnaldo Carvalho de Melo | c338aee | 2009-11-20 20:51:27 -0200 | [diff] [blame] | 335 | static int kernel_maps__split_kallsyms(symbol_filter_t filter) |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 336 | { |
| 337 | struct map *map = kernel_map; |
| 338 | struct symbol *pos; |
| 339 | int count = 0; |
| 340 | struct rb_node *next = rb_first(&kernel_map->dso->syms); |
| 341 | int kernel_range = 0; |
| 342 | |
| 343 | while (next) { |
| 344 | char *module; |
| 345 | |
| 346 | pos = rb_entry(next, struct symbol, rb_node); |
| 347 | next = rb_next(&pos->rb_node); |
| 348 | |
| 349 | module = strchr(pos->name, '\t'); |
| 350 | if (module) { |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 351 | *module++ = '\0'; |
| 352 | |
Arnaldo Carvalho de Melo | af427bf | 2009-10-05 14:26:17 -0300 | [diff] [blame] | 353 | if (strcmp(map->dso->name, module)) { |
| 354 | map = kernel_maps__find_by_dso_name(module); |
| 355 | if (!map) { |
Arnaldo Carvalho de Melo | 6beba7a | 2009-10-21 17:34:06 -0200 | [diff] [blame] | 356 | pr_err("/proc/{kallsyms,modules} " |
| 357 | "inconsistency!\n"); |
Arnaldo Carvalho de Melo | af427bf | 2009-10-05 14:26:17 -0300 | [diff] [blame] | 358 | return -1; |
| 359 | } |
| 360 | } |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 361 | /* |
| 362 | * So that we look just like we get from .ko files, |
| 363 | * i.e. not prelinked, relative to map->start. |
| 364 | */ |
| 365 | pos->start = map->map_ip(map, pos->start); |
| 366 | pos->end = map->map_ip(map, pos->end); |
| 367 | } else if (map != kernel_map) { |
| 368 | char dso_name[PATH_MAX]; |
| 369 | struct dso *dso; |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 370 | |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 371 | snprintf(dso_name, sizeof(dso_name), "[kernel].%d", |
| 372 | kernel_range++); |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 373 | |
Arnaldo Carvalho de Melo | 00a192b | 2009-10-30 16:28:24 -0200 | [diff] [blame] | 374 | dso = dso__new(dso_name); |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 375 | if (dso == NULL) |
| 376 | return -1; |
| 377 | |
| 378 | map = map__new2(pos->start, dso); |
| 379 | if (map == NULL) { |
| 380 | dso__delete(dso); |
| 381 | return -1; |
| 382 | } |
| 383 | |
Arnaldo Carvalho de Melo | ed52ce2 | 2009-10-19 17:17:57 -0200 | [diff] [blame] | 384 | map->map_ip = map->unmap_ip = identity__map_ip; |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 385 | kernel_maps__insert(map); |
| 386 | ++kernel_range; |
| 387 | } |
| 388 | |
| 389 | if (filter && filter(map, pos)) { |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 390 | rb_erase(&pos->rb_node, &kernel_map->dso->syms); |
Arnaldo Carvalho de Melo | 00a192b | 2009-10-30 16:28:24 -0200 | [diff] [blame] | 391 | symbol__delete(pos); |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 392 | } else { |
| 393 | if (map != kernel_map) { |
| 394 | rb_erase(&pos->rb_node, &kernel_map->dso->syms); |
| 395 | dso__insert_symbol(map->dso, pos); |
| 396 | } |
Mike Galbraith | 9974f49 | 2009-07-02 08:05:58 +0200 | [diff] [blame] | 397 | count++; |
| 398 | } |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 399 | } |
| 400 | |
Mike Galbraith | 9974f49 | 2009-07-02 08:05:58 +0200 | [diff] [blame] | 401 | return count; |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 402 | } |
| 403 | |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 404 | |
Arnaldo Carvalho de Melo | c338aee | 2009-11-20 20:51:27 -0200 | [diff] [blame] | 405 | static int kernel_maps__load_kallsyms(symbol_filter_t filter) |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 406 | { |
Arnaldo Carvalho de Melo | 6beba7a | 2009-10-21 17:34:06 -0200 | [diff] [blame] | 407 | if (kernel_maps__load_all_kallsyms()) |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 408 | return -1; |
| 409 | |
| 410 | dso__fixup_sym_end(kernel_map->dso); |
Arnaldo Carvalho de Melo | c338aee | 2009-11-20 20:51:27 -0200 | [diff] [blame] | 411 | kernel_map->dso->origin = DSO__ORIG_KERNEL; |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 412 | |
Arnaldo Carvalho de Melo | c338aee | 2009-11-20 20:51:27 -0200 | [diff] [blame] | 413 | return kernel_maps__split_kallsyms(filter); |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 414 | } |
| 415 | |
Arnaldo Carvalho de Melo | c338aee | 2009-11-20 20:51:27 -0200 | [diff] [blame] | 416 | size_t kernel_maps__fprintf(FILE *fp) |
Arnaldo Carvalho de Melo | af427bf | 2009-10-05 14:26:17 -0300 | [diff] [blame] | 417 | { |
Arnaldo Carvalho de Melo | 6beba7a | 2009-10-21 17:34:06 -0200 | [diff] [blame] | 418 | size_t printed = fprintf(fp, "Kernel maps:\n"); |
Arnaldo Carvalho de Melo | af427bf | 2009-10-05 14:26:17 -0300 | [diff] [blame] | 419 | struct rb_node *nd; |
| 420 | |
Arnaldo Carvalho de Melo | af427bf | 2009-10-05 14:26:17 -0300 | [diff] [blame] | 421 | for (nd = rb_first(&kernel_maps); nd; nd = rb_next(nd)) { |
| 422 | struct map *pos = rb_entry(nd, struct map, rb_node); |
| 423 | |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 424 | printed += fprintf(fp, "Map:"); |
Arnaldo Carvalho de Melo | af427bf | 2009-10-05 14:26:17 -0300 | [diff] [blame] | 425 | printed += map__fprintf(pos, fp); |
Arnaldo Carvalho de Melo | 6beba7a | 2009-10-21 17:34:06 -0200 | [diff] [blame] | 426 | if (verbose > 1) { |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 427 | printed += dso__fprintf(pos->dso, fp); |
| 428 | printed += fprintf(fp, "--\n"); |
| 429 | } |
Arnaldo Carvalho de Melo | af427bf | 2009-10-05 14:26:17 -0300 | [diff] [blame] | 430 | } |
| 431 | |
Arnaldo Carvalho de Melo | 6beba7a | 2009-10-21 17:34:06 -0200 | [diff] [blame] | 432 | return printed + fprintf(fp, "END kernel maps\n"); |
Arnaldo Carvalho de Melo | af427bf | 2009-10-05 14:26:17 -0300 | [diff] [blame] | 433 | } |
| 434 | |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 435 | 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] | 436 | symbol_filter_t filter) |
Pekka Enberg | 80d496b | 2009-06-08 21:12:48 +0300 | [diff] [blame] | 437 | { |
| 438 | char *line = NULL; |
| 439 | size_t n; |
| 440 | FILE *file; |
| 441 | int nr_syms = 0; |
| 442 | |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 443 | file = fopen(self->long_name, "r"); |
Pekka Enberg | 80d496b | 2009-06-08 21:12:48 +0300 | [diff] [blame] | 444 | if (file == NULL) |
| 445 | goto out_failure; |
| 446 | |
| 447 | while (!feof(file)) { |
Paul Mackerras | 9cffa8d | 2009-06-19 22:21:42 +1000 | [diff] [blame] | 448 | u64 start, size; |
Pekka Enberg | 80d496b | 2009-06-08 21:12:48 +0300 | [diff] [blame] | 449 | struct symbol *sym; |
| 450 | int line_len, len; |
| 451 | |
| 452 | line_len = getline(&line, &n, file); |
| 453 | if (line_len < 0) |
| 454 | break; |
| 455 | |
| 456 | if (!line) |
| 457 | goto out_failure; |
| 458 | |
| 459 | line[--line_len] = '\0'; /* \n */ |
| 460 | |
| 461 | len = hex2u64(line, &start); |
| 462 | |
| 463 | len++; |
| 464 | if (len + 2 >= line_len) |
| 465 | continue; |
| 466 | |
| 467 | len += hex2u64(line + len, &size); |
| 468 | |
| 469 | len++; |
| 470 | if (len + 2 >= line_len) |
| 471 | continue; |
| 472 | |
Arnaldo Carvalho de Melo | 00a192b | 2009-10-30 16:28:24 -0200 | [diff] [blame] | 473 | sym = symbol__new(start, size, line + len); |
Pekka Enberg | 80d496b | 2009-06-08 21:12:48 +0300 | [diff] [blame] | 474 | |
| 475 | if (sym == NULL) |
| 476 | goto out_delete_line; |
| 477 | |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 478 | if (filter && filter(map, sym)) |
Arnaldo Carvalho de Melo | 00a192b | 2009-10-30 16:28:24 -0200 | [diff] [blame] | 479 | symbol__delete(sym); |
Pekka Enberg | 80d496b | 2009-06-08 21:12:48 +0300 | [diff] [blame] | 480 | else { |
| 481 | dso__insert_symbol(self, sym); |
| 482 | nr_syms++; |
| 483 | } |
| 484 | } |
| 485 | |
| 486 | free(line); |
| 487 | fclose(file); |
| 488 | |
| 489 | return nr_syms; |
| 490 | |
| 491 | out_delete_line: |
| 492 | free(line); |
| 493 | out_failure: |
| 494 | return -1; |
| 495 | } |
| 496 | |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 497 | /** |
| 498 | * elf_symtab__for_each_symbol - iterate thru all the symbols |
| 499 | * |
| 500 | * @self: struct elf_symtab instance to iterate |
Ingo Molnar | 83a0944 | 2009-08-15 12:26:57 +0200 | [diff] [blame] | 501 | * @idx: uint32_t idx |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 502 | * @sym: GElf_Sym iterator |
| 503 | */ |
Ingo Molnar | 83a0944 | 2009-08-15 12:26:57 +0200 | [diff] [blame] | 504 | #define elf_symtab__for_each_symbol(syms, nr_syms, idx, sym) \ |
| 505 | for (idx = 0, gelf_getsym(syms, idx, &sym);\ |
| 506 | idx < nr_syms; \ |
| 507 | idx++, gelf_getsym(syms, idx, &sym)) |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 508 | |
| 509 | static inline uint8_t elf_sym__type(const GElf_Sym *sym) |
| 510 | { |
| 511 | return GELF_ST_TYPE(sym->st_info); |
| 512 | } |
| 513 | |
| 514 | static inline int elf_sym__is_function(const GElf_Sym *sym) |
| 515 | { |
| 516 | return elf_sym__type(sym) == STT_FUNC && |
| 517 | sym->st_name != 0 && |
Arnaldo Carvalho de Melo | 8183313 | 2009-10-05 23:35:03 -0300 | [diff] [blame] | 518 | sym->st_shndx != SHN_UNDEF; |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 519 | } |
| 520 | |
Mike Galbraith | 6cfcc53 | 2009-07-02 08:08:36 +0200 | [diff] [blame] | 521 | static inline int elf_sym__is_label(const GElf_Sym *sym) |
| 522 | { |
| 523 | return elf_sym__type(sym) == STT_NOTYPE && |
| 524 | sym->st_name != 0 && |
| 525 | sym->st_shndx != SHN_UNDEF && |
| 526 | sym->st_shndx != SHN_ABS; |
| 527 | } |
| 528 | |
| 529 | static inline const char *elf_sec__name(const GElf_Shdr *shdr, |
| 530 | const Elf_Data *secstrs) |
| 531 | { |
| 532 | return secstrs->d_buf + shdr->sh_name; |
| 533 | } |
| 534 | |
| 535 | static inline int elf_sec__is_text(const GElf_Shdr *shdr, |
| 536 | const Elf_Data *secstrs) |
| 537 | { |
| 538 | return strstr(elf_sec__name(shdr, secstrs), "text") != NULL; |
| 539 | } |
| 540 | |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 541 | static inline const char *elf_sym__name(const GElf_Sym *sym, |
| 542 | const Elf_Data *symstrs) |
| 543 | { |
| 544 | return symstrs->d_buf + sym->st_name; |
| 545 | } |
| 546 | |
| 547 | static Elf_Scn *elf_section_by_name(Elf *elf, GElf_Ehdr *ep, |
| 548 | GElf_Shdr *shp, const char *name, |
Ingo Molnar | 83a0944 | 2009-08-15 12:26:57 +0200 | [diff] [blame] | 549 | size_t *idx) |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 550 | { |
| 551 | Elf_Scn *sec = NULL; |
| 552 | size_t cnt = 1; |
| 553 | |
| 554 | while ((sec = elf_nextscn(elf, sec)) != NULL) { |
| 555 | char *str; |
| 556 | |
| 557 | gelf_getshdr(sec, shp); |
| 558 | str = elf_strptr(elf, ep->e_shstrndx, shp->sh_name); |
| 559 | if (!strcmp(name, str)) { |
Ingo Molnar | 83a0944 | 2009-08-15 12:26:57 +0200 | [diff] [blame] | 560 | if (idx) |
| 561 | *idx = cnt; |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 562 | break; |
| 563 | } |
| 564 | ++cnt; |
| 565 | } |
| 566 | |
| 567 | return sec; |
| 568 | } |
| 569 | |
Arnaldo Carvalho de Melo | 8ce998d | 2009-06-03 00:54:33 -0300 | [diff] [blame] | 570 | #define elf_section__for_each_rel(reldata, pos, pos_mem, idx, nr_entries) \ |
| 571 | for (idx = 0, pos = gelf_getrel(reldata, 0, &pos_mem); \ |
| 572 | idx < nr_entries; \ |
| 573 | ++idx, pos = gelf_getrel(reldata, idx, &pos_mem)) |
| 574 | |
| 575 | #define elf_section__for_each_rela(reldata, pos, pos_mem, idx, nr_entries) \ |
| 576 | for (idx = 0, pos = gelf_getrela(reldata, 0, &pos_mem); \ |
| 577 | idx < nr_entries; \ |
| 578 | ++idx, pos = gelf_getrela(reldata, idx, &pos_mem)) |
| 579 | |
Arnaldo Carvalho de Melo | a25e46c | 2009-07-11 12:18:36 -0300 | [diff] [blame] | 580 | /* |
| 581 | * We need to check if we have a .dynsym, so that we can handle the |
| 582 | * .plt, synthesizing its symbols, that aren't on the symtabs (be it |
| 583 | * .dynsym or .symtab). |
| 584 | * And always look at the original dso, not at debuginfo packages, that |
| 585 | * have the PLT data stripped out (shdr_rel_plt.sh_type == SHT_NOBITS). |
| 586 | */ |
Arnaldo Carvalho de Melo | 8216416 | 2009-11-16 13:48:11 -0200 | [diff] [blame] | 587 | static int dso__synthesize_plt_symbols(struct dso *self, struct map *map, |
| 588 | symbol_filter_t filter) |
Arnaldo Carvalho de Melo | 8ce998d | 2009-06-03 00:54:33 -0300 | [diff] [blame] | 589 | { |
| 590 | uint32_t nr_rel_entries, idx; |
| 591 | GElf_Sym sym; |
Paul Mackerras | 9cffa8d | 2009-06-19 22:21:42 +1000 | [diff] [blame] | 592 | u64 plt_offset; |
Arnaldo Carvalho de Melo | 8ce998d | 2009-06-03 00:54:33 -0300 | [diff] [blame] | 593 | GElf_Shdr shdr_plt; |
| 594 | struct symbol *f; |
Arnaldo Carvalho de Melo | a25e46c | 2009-07-11 12:18:36 -0300 | [diff] [blame] | 595 | GElf_Shdr shdr_rel_plt, shdr_dynsym; |
Arnaldo Carvalho de Melo | 8ce998d | 2009-06-03 00:54:33 -0300 | [diff] [blame] | 596 | Elf_Data *reldata, *syms, *symstrs; |
Arnaldo Carvalho de Melo | a25e46c | 2009-07-11 12:18:36 -0300 | [diff] [blame] | 597 | Elf_Scn *scn_plt_rel, *scn_symstrs, *scn_dynsym; |
| 598 | size_t dynsym_idx; |
| 599 | GElf_Ehdr ehdr; |
Arnaldo Carvalho de Melo | 8ce998d | 2009-06-03 00:54:33 -0300 | [diff] [blame] | 600 | char sympltname[1024]; |
Arnaldo Carvalho de Melo | a25e46c | 2009-07-11 12:18:36 -0300 | [diff] [blame] | 601 | Elf *elf; |
| 602 | int nr = 0, symidx, fd, err = 0; |
Arnaldo Carvalho de Melo | 8ce998d | 2009-06-03 00:54:33 -0300 | [diff] [blame] | 603 | |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 604 | fd = open(self->long_name, O_RDONLY); |
Arnaldo Carvalho de Melo | a25e46c | 2009-07-11 12:18:36 -0300 | [diff] [blame] | 605 | if (fd < 0) |
| 606 | goto out; |
| 607 | |
Marti Raudsepp | 8408712 | 2009-10-24 19:10:36 +0300 | [diff] [blame] | 608 | elf = elf_begin(fd, PERF_ELF_C_READ_MMAP, NULL); |
Arnaldo Carvalho de Melo | a25e46c | 2009-07-11 12:18:36 -0300 | [diff] [blame] | 609 | if (elf == NULL) |
| 610 | goto out_close; |
| 611 | |
| 612 | if (gelf_getehdr(elf, &ehdr) == NULL) |
| 613 | goto out_elf_end; |
| 614 | |
| 615 | scn_dynsym = elf_section_by_name(elf, &ehdr, &shdr_dynsym, |
| 616 | ".dynsym", &dynsym_idx); |
| 617 | if (scn_dynsym == NULL) |
| 618 | goto out_elf_end; |
| 619 | |
| 620 | 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] | 621 | ".rela.plt", NULL); |
| 622 | if (scn_plt_rel == NULL) { |
Arnaldo Carvalho de Melo | a25e46c | 2009-07-11 12:18:36 -0300 | [diff] [blame] | 623 | 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] | 624 | ".rel.plt", NULL); |
| 625 | if (scn_plt_rel == NULL) |
Arnaldo Carvalho de Melo | a25e46c | 2009-07-11 12:18:36 -0300 | [diff] [blame] | 626 | goto out_elf_end; |
Arnaldo Carvalho de Melo | 8ce998d | 2009-06-03 00:54:33 -0300 | [diff] [blame] | 627 | } |
| 628 | |
Arnaldo Carvalho de Melo | a25e46c | 2009-07-11 12:18:36 -0300 | [diff] [blame] | 629 | err = -1; |
Arnaldo Carvalho de Melo | 8ce998d | 2009-06-03 00:54:33 -0300 | [diff] [blame] | 630 | |
Arnaldo Carvalho de Melo | a25e46c | 2009-07-11 12:18:36 -0300 | [diff] [blame] | 631 | if (shdr_rel_plt.sh_link != dynsym_idx) |
| 632 | goto out_elf_end; |
| 633 | |
| 634 | if (elf_section_by_name(elf, &ehdr, &shdr_plt, ".plt", NULL) == NULL) |
| 635 | goto out_elf_end; |
Arnaldo Carvalho de Melo | 8ce998d | 2009-06-03 00:54:33 -0300 | [diff] [blame] | 636 | |
| 637 | /* |
Ingo Molnar | 83a0944 | 2009-08-15 12:26:57 +0200 | [diff] [blame] | 638 | * 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] | 639 | * and the symbols in the .dynsym they refer to. |
| 640 | */ |
| 641 | reldata = elf_getdata(scn_plt_rel, NULL); |
| 642 | if (reldata == NULL) |
Arnaldo Carvalho de Melo | a25e46c | 2009-07-11 12:18:36 -0300 | [diff] [blame] | 643 | goto out_elf_end; |
Arnaldo Carvalho de Melo | 8ce998d | 2009-06-03 00:54:33 -0300 | [diff] [blame] | 644 | |
| 645 | syms = elf_getdata(scn_dynsym, NULL); |
| 646 | if (syms == NULL) |
Arnaldo Carvalho de Melo | a25e46c | 2009-07-11 12:18:36 -0300 | [diff] [blame] | 647 | goto out_elf_end; |
Arnaldo Carvalho de Melo | 8ce998d | 2009-06-03 00:54:33 -0300 | [diff] [blame] | 648 | |
Arnaldo Carvalho de Melo | a25e46c | 2009-07-11 12:18:36 -0300 | [diff] [blame] | 649 | scn_symstrs = elf_getscn(elf, shdr_dynsym.sh_link); |
Arnaldo Carvalho de Melo | 8ce998d | 2009-06-03 00:54:33 -0300 | [diff] [blame] | 650 | if (scn_symstrs == NULL) |
Arnaldo Carvalho de Melo | a25e46c | 2009-07-11 12:18:36 -0300 | [diff] [blame] | 651 | goto out_elf_end; |
Arnaldo Carvalho de Melo | 8ce998d | 2009-06-03 00:54:33 -0300 | [diff] [blame] | 652 | |
| 653 | symstrs = elf_getdata(scn_symstrs, NULL); |
| 654 | if (symstrs == NULL) |
Arnaldo Carvalho de Melo | a25e46c | 2009-07-11 12:18:36 -0300 | [diff] [blame] | 655 | goto out_elf_end; |
Arnaldo Carvalho de Melo | 8ce998d | 2009-06-03 00:54:33 -0300 | [diff] [blame] | 656 | |
| 657 | nr_rel_entries = shdr_rel_plt.sh_size / shdr_rel_plt.sh_entsize; |
| 658 | plt_offset = shdr_plt.sh_offset; |
| 659 | |
| 660 | if (shdr_rel_plt.sh_type == SHT_RELA) { |
| 661 | GElf_Rela pos_mem, *pos; |
| 662 | |
| 663 | elf_section__for_each_rela(reldata, pos, pos_mem, idx, |
| 664 | nr_rel_entries) { |
| 665 | symidx = GELF_R_SYM(pos->r_info); |
| 666 | plt_offset += shdr_plt.sh_entsize; |
| 667 | gelf_getsym(syms, symidx, &sym); |
| 668 | snprintf(sympltname, sizeof(sympltname), |
| 669 | "%s@plt", elf_sym__name(&sym, symstrs)); |
| 670 | |
| 671 | f = symbol__new(plt_offset, shdr_plt.sh_entsize, |
Arnaldo Carvalho de Melo | 00a192b | 2009-10-30 16:28:24 -0200 | [diff] [blame] | 672 | sympltname); |
Arnaldo Carvalho de Melo | 8ce998d | 2009-06-03 00:54:33 -0300 | [diff] [blame] | 673 | if (!f) |
Arnaldo Carvalho de Melo | a25e46c | 2009-07-11 12:18:36 -0300 | [diff] [blame] | 674 | goto out_elf_end; |
Arnaldo Carvalho de Melo | 8ce998d | 2009-06-03 00:54:33 -0300 | [diff] [blame] | 675 | |
Arnaldo Carvalho de Melo | 8216416 | 2009-11-16 13:48:11 -0200 | [diff] [blame] | 676 | if (filter && filter(map, f)) |
| 677 | symbol__delete(f); |
| 678 | else { |
| 679 | dso__insert_symbol(self, f); |
| 680 | ++nr; |
| 681 | } |
Arnaldo Carvalho de Melo | 8ce998d | 2009-06-03 00:54:33 -0300 | [diff] [blame] | 682 | } |
| 683 | } else if (shdr_rel_plt.sh_type == SHT_REL) { |
| 684 | GElf_Rel pos_mem, *pos; |
| 685 | elf_section__for_each_rel(reldata, pos, pos_mem, idx, |
| 686 | nr_rel_entries) { |
| 687 | symidx = GELF_R_SYM(pos->r_info); |
| 688 | plt_offset += shdr_plt.sh_entsize; |
| 689 | gelf_getsym(syms, symidx, &sym); |
| 690 | snprintf(sympltname, sizeof(sympltname), |
| 691 | "%s@plt", elf_sym__name(&sym, symstrs)); |
| 692 | |
| 693 | f = symbol__new(plt_offset, shdr_plt.sh_entsize, |
Arnaldo Carvalho de Melo | 00a192b | 2009-10-30 16:28:24 -0200 | [diff] [blame] | 694 | sympltname); |
Arnaldo Carvalho de Melo | 8ce998d | 2009-06-03 00:54:33 -0300 | [diff] [blame] | 695 | if (!f) |
Arnaldo Carvalho de Melo | a25e46c | 2009-07-11 12:18:36 -0300 | [diff] [blame] | 696 | goto out_elf_end; |
Arnaldo Carvalho de Melo | 8ce998d | 2009-06-03 00:54:33 -0300 | [diff] [blame] | 697 | |
Arnaldo Carvalho de Melo | 8216416 | 2009-11-16 13:48:11 -0200 | [diff] [blame] | 698 | if (filter && filter(map, f)) |
| 699 | symbol__delete(f); |
| 700 | else { |
| 701 | dso__insert_symbol(self, f); |
| 702 | ++nr; |
| 703 | } |
Arnaldo Carvalho de Melo | 8ce998d | 2009-06-03 00:54:33 -0300 | [diff] [blame] | 704 | } |
Arnaldo Carvalho de Melo | 8ce998d | 2009-06-03 00:54:33 -0300 | [diff] [blame] | 705 | } |
| 706 | |
Arnaldo Carvalho de Melo | a25e46c | 2009-07-11 12:18:36 -0300 | [diff] [blame] | 707 | err = 0; |
| 708 | out_elf_end: |
| 709 | elf_end(elf); |
| 710 | out_close: |
| 711 | close(fd); |
| 712 | |
| 713 | if (err == 0) |
| 714 | return nr; |
| 715 | out: |
Arnaldo Carvalho de Melo | 6beba7a | 2009-10-21 17:34:06 -0200 | [diff] [blame] | 716 | pr_warning("%s: problems reading %s PLT info.\n", |
| 717 | __func__, self->long_name); |
Arnaldo Carvalho de Melo | a25e46c | 2009-07-11 12:18:36 -0300 | [diff] [blame] | 718 | return 0; |
Arnaldo Carvalho de Melo | 8ce998d | 2009-06-03 00:54:33 -0300 | [diff] [blame] | 719 | } |
| 720 | |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 721 | static int dso__load_sym(struct dso *self, struct map *map, const char *name, |
| 722 | int fd, symbol_filter_t filter, int kernel, |
Arnaldo Carvalho de Melo | 6beba7a | 2009-10-21 17:34:06 -0200 | [diff] [blame] | 723 | int kmodule) |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 724 | { |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 725 | struct map *curr_map = map; |
| 726 | struct dso *curr_dso = self; |
| 727 | size_t dso_name_len = strlen(self->short_name); |
Mike Galbraith | 6cfcc53 | 2009-07-02 08:08:36 +0200 | [diff] [blame] | 728 | Elf_Data *symstrs, *secstrs; |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 729 | uint32_t nr_syms; |
| 730 | int err = -1; |
Ingo Molnar | 83a0944 | 2009-08-15 12:26:57 +0200 | [diff] [blame] | 731 | uint32_t idx; |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 732 | GElf_Ehdr ehdr; |
| 733 | GElf_Shdr shdr; |
| 734 | Elf_Data *syms; |
| 735 | GElf_Sym sym; |
Arnaldo Carvalho de Melo | a25e46c | 2009-07-11 12:18:36 -0300 | [diff] [blame] | 736 | Elf_Scn *sec, *sec_strndx; |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 737 | Elf *elf; |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 738 | int nr = 0; |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 739 | |
Marti Raudsepp | 8408712 | 2009-10-24 19:10:36 +0300 | [diff] [blame] | 740 | elf = elf_begin(fd, PERF_ELF_C_READ_MMAP, NULL); |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 741 | if (elf == NULL) { |
Arnaldo Carvalho de Melo | 6beba7a | 2009-10-21 17:34:06 -0200 | [diff] [blame] | 742 | 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] | 743 | goto out_close; |
| 744 | } |
| 745 | |
| 746 | if (gelf_getehdr(elf, &ehdr) == NULL) { |
Arnaldo Carvalho de Melo | 6beba7a | 2009-10-21 17:34:06 -0200 | [diff] [blame] | 747 | pr_err("%s: cannot get elf header.\n", __func__); |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 748 | goto out_elf_end; |
| 749 | } |
| 750 | |
Arnaldo Carvalho de Melo | 8ce998d | 2009-06-03 00:54:33 -0300 | [diff] [blame] | 751 | sec = elf_section_by_name(elf, &ehdr, &shdr, ".symtab", NULL); |
| 752 | if (sec == NULL) { |
Arnaldo Carvalho de Melo | a25e46c | 2009-07-11 12:18:36 -0300 | [diff] [blame] | 753 | sec = elf_section_by_name(elf, &ehdr, &shdr, ".dynsym", NULL); |
| 754 | if (sec == NULL) |
Arnaldo Carvalho de Melo | 8ce998d | 2009-06-03 00:54:33 -0300 | [diff] [blame] | 755 | goto out_elf_end; |
Arnaldo Carvalho de Melo | 8ce998d | 2009-06-03 00:54:33 -0300 | [diff] [blame] | 756 | } |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 757 | |
| 758 | syms = elf_getdata(sec, NULL); |
| 759 | if (syms == NULL) |
| 760 | goto out_elf_end; |
| 761 | |
| 762 | sec = elf_getscn(elf, shdr.sh_link); |
| 763 | if (sec == NULL) |
| 764 | goto out_elf_end; |
| 765 | |
| 766 | symstrs = elf_getdata(sec, NULL); |
| 767 | if (symstrs == NULL) |
| 768 | goto out_elf_end; |
| 769 | |
Mike Galbraith | 6cfcc53 | 2009-07-02 08:08:36 +0200 | [diff] [blame] | 770 | sec_strndx = elf_getscn(elf, ehdr.e_shstrndx); |
| 771 | if (sec_strndx == NULL) |
| 772 | goto out_elf_end; |
| 773 | |
| 774 | secstrs = elf_getdata(sec_strndx, NULL); |
Stoyan Gaydarov | 9b30a26 | 2009-07-30 05:25:29 -0500 | [diff] [blame] | 775 | if (secstrs == NULL) |
Mike Galbraith | 6cfcc53 | 2009-07-02 08:08:36 +0200 | [diff] [blame] | 776 | goto out_elf_end; |
| 777 | |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 778 | nr_syms = shdr.sh_size / shdr.sh_entsize; |
| 779 | |
Arjan van de Ven | e9fbc9d | 2009-06-06 21:22:33 +0200 | [diff] [blame] | 780 | memset(&sym, 0, sizeof(sym)); |
Mike Galbraith | d20ff6b | 2009-07-20 14:01:38 +0200 | [diff] [blame] | 781 | if (!kernel) { |
| 782 | self->adjust_symbols = (ehdr.e_type == ET_EXEC || |
Arnaldo Carvalho de Melo | 30d7a77 | 2009-07-02 21:24:14 -0300 | [diff] [blame] | 783 | elf_section_by_name(elf, &ehdr, &shdr, |
| 784 | ".gnu.prelink_undo", |
| 785 | NULL) != NULL); |
Mike Galbraith | d20ff6b | 2009-07-20 14:01:38 +0200 | [diff] [blame] | 786 | } else self->adjust_symbols = 0; |
| 787 | |
Ingo Molnar | 83a0944 | 2009-08-15 12:26:57 +0200 | [diff] [blame] | 788 | elf_symtab__for_each_symbol(syms, nr_syms, idx, sym) { |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 789 | struct symbol *f; |
Ingo Molnar | 83a0944 | 2009-08-15 12:26:57 +0200 | [diff] [blame] | 790 | const char *elf_name; |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 791 | char *demangled = NULL; |
Mike Galbraith | 6cfcc53 | 2009-07-02 08:08:36 +0200 | [diff] [blame] | 792 | int is_label = elf_sym__is_label(&sym); |
| 793 | const char *section_name; |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 794 | |
Mike Galbraith | 6cfcc53 | 2009-07-02 08:08:36 +0200 | [diff] [blame] | 795 | if (!is_label && !elf_sym__is_function(&sym)) |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 796 | continue; |
| 797 | |
| 798 | sec = elf_getscn(elf, sym.st_shndx); |
| 799 | if (!sec) |
| 800 | goto out_elf_end; |
| 801 | |
| 802 | gelf_getshdr(sec, &shdr); |
Mike Galbraith | 6cfcc53 | 2009-07-02 08:08:36 +0200 | [diff] [blame] | 803 | |
| 804 | if (is_label && !elf_sec__is_text(&shdr, secstrs)) |
| 805 | continue; |
| 806 | |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 807 | elf_name = elf_sym__name(&sym, symstrs); |
Mike Galbraith | 6cfcc53 | 2009-07-02 08:08:36 +0200 | [diff] [blame] | 808 | section_name = elf_sec__name(&shdr, secstrs); |
Ingo Molnar | 0b73da3 | 2009-06-06 15:48:52 +0200 | [diff] [blame] | 809 | |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 810 | if (kernel || kmodule) { |
| 811 | char dso_name[PATH_MAX]; |
| 812 | |
| 813 | if (strcmp(section_name, |
| 814 | curr_dso->short_name + dso_name_len) == 0) |
| 815 | goto new_symbol; |
| 816 | |
| 817 | if (strcmp(section_name, ".text") == 0) { |
| 818 | curr_map = map; |
| 819 | curr_dso = self; |
| 820 | goto new_symbol; |
| 821 | } |
| 822 | |
| 823 | snprintf(dso_name, sizeof(dso_name), |
| 824 | "%s%s", self->short_name, section_name); |
| 825 | |
| 826 | curr_map = kernel_maps__find_by_dso_name(dso_name); |
| 827 | if (curr_map == NULL) { |
| 828 | u64 start = sym.st_value; |
| 829 | |
| 830 | if (kmodule) |
| 831 | start += map->start + shdr.sh_offset; |
| 832 | |
Arnaldo Carvalho de Melo | 00a192b | 2009-10-30 16:28:24 -0200 | [diff] [blame] | 833 | curr_dso = dso__new(dso_name); |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 834 | if (curr_dso == NULL) |
| 835 | goto out_elf_end; |
| 836 | curr_map = map__new2(start, curr_dso); |
| 837 | if (curr_map == NULL) { |
| 838 | dso__delete(curr_dso); |
| 839 | goto out_elf_end; |
| 840 | } |
Arnaldo Carvalho de Melo | ed52ce2 | 2009-10-19 17:17:57 -0200 | [diff] [blame] | 841 | curr_map->map_ip = identity__map_ip; |
| 842 | curr_map->unmap_ip = identity__map_ip; |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 843 | curr_dso->origin = DSO__ORIG_KERNEL; |
| 844 | kernel_maps__insert(curr_map); |
| 845 | dsos__add(curr_dso); |
| 846 | } else |
| 847 | curr_dso = curr_map->dso; |
| 848 | |
| 849 | goto new_symbol; |
Arnaldo Carvalho de Melo | af427bf | 2009-10-05 14:26:17 -0300 | [diff] [blame] | 850 | } |
| 851 | |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 852 | if (curr_dso->adjust_symbols) { |
Arnaldo Carvalho de Melo | 6beba7a | 2009-10-21 17:34:06 -0200 | [diff] [blame] | 853 | pr_debug2("adjusting symbol: st_value: %Lx sh_addr: " |
| 854 | "%Lx sh_offset: %Lx\n", (u64)sym.st_value, |
| 855 | (u64)shdr.sh_addr, (u64)shdr.sh_offset); |
Arnaldo Carvalho de Melo | f5812a7 | 2009-06-30 11:43:17 -0300 | [diff] [blame] | 856 | sym.st_value -= shdr.sh_addr - shdr.sh_offset; |
Arnaldo Carvalho de Melo | af427bf | 2009-10-05 14:26:17 -0300 | [diff] [blame] | 857 | } |
Arnaldo Carvalho de Melo | 28ac909 | 2009-07-20 14:14:12 -0300 | [diff] [blame] | 858 | /* |
| 859 | * We need to figure out if the object was created from C++ sources |
| 860 | * DWARF DW_compile_unit has this, but we don't always have access |
| 861 | * to it... |
| 862 | */ |
Ingo Molnar | 83a0944 | 2009-08-15 12:26:57 +0200 | [diff] [blame] | 863 | demangled = bfd_demangle(NULL, elf_name, DMGL_PARAMS | DMGL_ANSI); |
Arnaldo Carvalho de Melo | 28ac909 | 2009-07-20 14:14:12 -0300 | [diff] [blame] | 864 | if (demangled != NULL) |
Ingo Molnar | 83a0944 | 2009-08-15 12:26:57 +0200 | [diff] [blame] | 865 | elf_name = demangled; |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 866 | new_symbol: |
Arnaldo Carvalho de Melo | 00a192b | 2009-10-30 16:28:24 -0200 | [diff] [blame] | 867 | 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] | 868 | free(demangled); |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 869 | if (!f) |
| 870 | goto out_elf_end; |
| 871 | |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 872 | if (filter && filter(curr_map, f)) |
Arnaldo Carvalho de Melo | 00a192b | 2009-10-30 16:28:24 -0200 | [diff] [blame] | 873 | symbol__delete(f); |
Arnaldo Carvalho de Melo | 69ee69f | 2009-05-28 14:55:26 -0300 | [diff] [blame] | 874 | else { |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 875 | dso__insert_symbol(curr_dso, f); |
Arnaldo Carvalho de Melo | 69ee69f | 2009-05-28 14:55:26 -0300 | [diff] [blame] | 876 | nr++; |
| 877 | } |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 878 | } |
| 879 | |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 880 | /* |
| 881 | * For misannotated, zeroed, ASM function sizes. |
| 882 | */ |
| 883 | if (nr > 0) |
| 884 | dso__fixup_sym_end(self); |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 885 | err = nr; |
| 886 | out_elf_end: |
| 887 | elf_end(elf); |
| 888 | out_close: |
| 889 | return err; |
| 890 | } |
| 891 | |
Arnaldo Carvalho de Melo | 78075ca | 2009-11-20 20:51:26 -0200 | [diff] [blame] | 892 | static bool dso__build_id_equal(const struct dso *self, u8 *build_id) |
| 893 | { |
| 894 | return memcmp(self->build_id, build_id, sizeof(self->build_id)) == 0; |
| 895 | } |
| 896 | |
Arnaldo Carvalho de Melo | e30a3d1 | 2009-11-18 20:20:51 -0200 | [diff] [blame] | 897 | bool dsos__read_build_ids(void) |
Frederic Weisbecker | 57f395a | 2009-11-11 04:51:04 +0100 | [diff] [blame] | 898 | { |
Arnaldo Carvalho de Melo | e30a3d1 | 2009-11-18 20:20:51 -0200 | [diff] [blame] | 899 | bool have_build_id = false; |
Frederic Weisbecker | 57f395a | 2009-11-11 04:51:04 +0100 | [diff] [blame] | 900 | struct dso *pos; |
| 901 | |
Arnaldo Carvalho de Melo | e30a3d1 | 2009-11-18 20:20:51 -0200 | [diff] [blame] | 902 | list_for_each_entry(pos, &dsos, node) |
| 903 | if (filename__read_build_id(pos->long_name, pos->build_id, |
| 904 | sizeof(pos->build_id)) > 0) { |
| 905 | have_build_id = true; |
| 906 | pos->has_build_id = true; |
| 907 | } |
Frederic Weisbecker | 57f395a | 2009-11-11 04:51:04 +0100 | [diff] [blame] | 908 | |
Arnaldo Carvalho de Melo | e30a3d1 | 2009-11-18 20:20:51 -0200 | [diff] [blame] | 909 | return have_build_id; |
Frederic Weisbecker | 57f395a | 2009-11-11 04:51:04 +0100 | [diff] [blame] | 910 | } |
| 911 | |
Arnaldo Carvalho de Melo | fd7a346 | 2009-11-20 20:51:25 -0200 | [diff] [blame] | 912 | /* |
| 913 | * Align offset to 4 bytes as needed for note name and descriptor data. |
| 914 | */ |
| 915 | #define NOTE_ALIGN(n) (((n) + 3) & -4U) |
| 916 | |
Arnaldo Carvalho de Melo | 2643ce1 | 2009-11-03 21:46:10 -0200 | [diff] [blame] | 917 | int filename__read_build_id(const char *filename, void *bf, size_t size) |
Arnaldo Carvalho de Melo | 4d1e00a | 2009-08-05 19:02:49 -0300 | [diff] [blame] | 918 | { |
Arnaldo Carvalho de Melo | 2643ce1 | 2009-11-03 21:46:10 -0200 | [diff] [blame] | 919 | int fd, err = -1; |
Arnaldo Carvalho de Melo | 4d1e00a | 2009-08-05 19:02:49 -0300 | [diff] [blame] | 920 | GElf_Ehdr ehdr; |
| 921 | GElf_Shdr shdr; |
Arnaldo Carvalho de Melo | fd7a346 | 2009-11-20 20:51:25 -0200 | [diff] [blame] | 922 | Elf_Data *data; |
Arnaldo Carvalho de Melo | 4d1e00a | 2009-08-05 19:02:49 -0300 | [diff] [blame] | 923 | Elf_Scn *sec; |
Pekka Enberg | e57cfcd | 2009-11-22 12:29:44 +0200 | [diff] [blame] | 924 | Elf_Kind ek; |
Arnaldo Carvalho de Melo | fd7a346 | 2009-11-20 20:51:25 -0200 | [diff] [blame] | 925 | void *ptr; |
Arnaldo Carvalho de Melo | 4d1e00a | 2009-08-05 19:02:49 -0300 | [diff] [blame] | 926 | Elf *elf; |
Arnaldo Carvalho de Melo | 4d1e00a | 2009-08-05 19:02:49 -0300 | [diff] [blame] | 927 | |
Arnaldo Carvalho de Melo | 2643ce1 | 2009-11-03 21:46:10 -0200 | [diff] [blame] | 928 | if (size < BUILD_ID_SIZE) |
| 929 | goto out; |
| 930 | |
| 931 | fd = open(filename, O_RDONLY); |
Arnaldo Carvalho de Melo | 4d1e00a | 2009-08-05 19:02:49 -0300 | [diff] [blame] | 932 | if (fd < 0) |
| 933 | goto out; |
| 934 | |
Marti Raudsepp | 8408712 | 2009-10-24 19:10:36 +0300 | [diff] [blame] | 935 | elf = elf_begin(fd, PERF_ELF_C_READ_MMAP, NULL); |
Arnaldo Carvalho de Melo | 4d1e00a | 2009-08-05 19:02:49 -0300 | [diff] [blame] | 936 | if (elf == NULL) { |
Arnaldo Carvalho de Melo | 8d06367 | 2009-11-04 18:50:43 -0200 | [diff] [blame] | 937 | pr_debug2("%s: cannot read %s ELF file.\n", __func__, filename); |
Arnaldo Carvalho de Melo | 4d1e00a | 2009-08-05 19:02:49 -0300 | [diff] [blame] | 938 | goto out_close; |
| 939 | } |
| 940 | |
Pekka Enberg | e57cfcd | 2009-11-22 12:29:44 +0200 | [diff] [blame] | 941 | ek = elf_kind(elf); |
| 942 | if (ek != ELF_K_ELF) |
| 943 | goto out_elf_end; |
| 944 | |
Arnaldo Carvalho de Melo | 4d1e00a | 2009-08-05 19:02:49 -0300 | [diff] [blame] | 945 | if (gelf_getehdr(elf, &ehdr) == NULL) { |
Arnaldo Carvalho de Melo | 6beba7a | 2009-10-21 17:34:06 -0200 | [diff] [blame] | 946 | pr_err("%s: cannot get elf header.\n", __func__); |
Arnaldo Carvalho de Melo | 4d1e00a | 2009-08-05 19:02:49 -0300 | [diff] [blame] | 947 | goto out_elf_end; |
| 948 | } |
| 949 | |
Arnaldo Carvalho de Melo | 2643ce1 | 2009-11-03 21:46:10 -0200 | [diff] [blame] | 950 | sec = elf_section_by_name(elf, &ehdr, &shdr, |
| 951 | ".note.gnu.build-id", NULL); |
Arnaldo Carvalho de Melo | fd7a346 | 2009-11-20 20:51:25 -0200 | [diff] [blame] | 952 | if (sec == NULL) { |
| 953 | sec = elf_section_by_name(elf, &ehdr, &shdr, |
| 954 | ".notes", NULL); |
| 955 | if (sec == NULL) |
| 956 | goto out_elf_end; |
| 957 | } |
| 958 | |
| 959 | data = elf_getdata(sec, NULL); |
| 960 | if (data == NULL) |
Arnaldo Carvalho de Melo | 4d1e00a | 2009-08-05 19:02:49 -0300 | [diff] [blame] | 961 | goto out_elf_end; |
| 962 | |
Arnaldo Carvalho de Melo | fd7a346 | 2009-11-20 20:51:25 -0200 | [diff] [blame] | 963 | ptr = data->d_buf; |
| 964 | while (ptr < (data->d_buf + data->d_size)) { |
| 965 | GElf_Nhdr *nhdr = ptr; |
| 966 | int namesz = NOTE_ALIGN(nhdr->n_namesz), |
| 967 | descsz = NOTE_ALIGN(nhdr->n_descsz); |
| 968 | const char *name; |
| 969 | |
| 970 | ptr += sizeof(*nhdr); |
| 971 | name = ptr; |
| 972 | ptr += namesz; |
| 973 | if (nhdr->n_type == NT_GNU_BUILD_ID && |
| 974 | nhdr->n_namesz == sizeof("GNU")) { |
| 975 | if (memcmp(name, "GNU", sizeof("GNU")) == 0) { |
| 976 | memcpy(bf, ptr, BUILD_ID_SIZE); |
| 977 | err = BUILD_ID_SIZE; |
| 978 | break; |
| 979 | } |
| 980 | } |
| 981 | ptr += descsz; |
| 982 | } |
Arnaldo Carvalho de Melo | 2643ce1 | 2009-11-03 21:46:10 -0200 | [diff] [blame] | 983 | out_elf_end: |
| 984 | elf_end(elf); |
| 985 | out_close: |
| 986 | close(fd); |
| 987 | out: |
| 988 | return err; |
| 989 | } |
| 990 | |
Arnaldo Carvalho de Melo | f1617b4 | 2009-11-18 20:20:52 -0200 | [diff] [blame] | 991 | int sysfs__read_build_id(const char *filename, void *build_id, size_t size) |
| 992 | { |
| 993 | int fd, err = -1; |
| 994 | |
| 995 | if (size < BUILD_ID_SIZE) |
| 996 | goto out; |
| 997 | |
| 998 | fd = open(filename, O_RDONLY); |
| 999 | if (fd < 0) |
| 1000 | goto out; |
| 1001 | |
| 1002 | while (1) { |
| 1003 | char bf[BUFSIZ]; |
| 1004 | GElf_Nhdr nhdr; |
| 1005 | int namesz, descsz; |
| 1006 | |
| 1007 | if (read(fd, &nhdr, sizeof(nhdr)) != sizeof(nhdr)) |
| 1008 | break; |
| 1009 | |
Arnaldo Carvalho de Melo | fd7a346 | 2009-11-20 20:51:25 -0200 | [diff] [blame] | 1010 | namesz = NOTE_ALIGN(nhdr.n_namesz); |
| 1011 | descsz = NOTE_ALIGN(nhdr.n_descsz); |
Arnaldo Carvalho de Melo | f1617b4 | 2009-11-18 20:20:52 -0200 | [diff] [blame] | 1012 | if (nhdr.n_type == NT_GNU_BUILD_ID && |
| 1013 | nhdr.n_namesz == sizeof("GNU")) { |
| 1014 | if (read(fd, bf, namesz) != namesz) |
| 1015 | break; |
| 1016 | if (memcmp(bf, "GNU", sizeof("GNU")) == 0) { |
| 1017 | if (read(fd, build_id, |
| 1018 | BUILD_ID_SIZE) == BUILD_ID_SIZE) { |
| 1019 | err = 0; |
| 1020 | break; |
| 1021 | } |
| 1022 | } else if (read(fd, bf, descsz) != descsz) |
| 1023 | break; |
| 1024 | } else { |
| 1025 | int n = namesz + descsz; |
| 1026 | if (read(fd, bf, n) != n) |
| 1027 | break; |
| 1028 | } |
| 1029 | } |
| 1030 | close(fd); |
| 1031 | out: |
| 1032 | return err; |
| 1033 | } |
| 1034 | |
Arnaldo Carvalho de Melo | 94cb9e3 | 2009-08-06 14:43:17 -0300 | [diff] [blame] | 1035 | char dso__symtab_origin(const struct dso *self) |
| 1036 | { |
| 1037 | static const char origin[] = { |
| 1038 | [DSO__ORIG_KERNEL] = 'k', |
| 1039 | [DSO__ORIG_JAVA_JIT] = 'j', |
| 1040 | [DSO__ORIG_FEDORA] = 'f', |
| 1041 | [DSO__ORIG_UBUNTU] = 'u', |
| 1042 | [DSO__ORIG_BUILDID] = 'b', |
| 1043 | [DSO__ORIG_DSO] = 'd', |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1044 | [DSO__ORIG_KMODULE] = 'K', |
Arnaldo Carvalho de Melo | 94cb9e3 | 2009-08-06 14:43:17 -0300 | [diff] [blame] | 1045 | }; |
| 1046 | |
| 1047 | if (self == NULL || self->origin == DSO__ORIG_NOT_FOUND) |
| 1048 | return '!'; |
| 1049 | return origin[self->origin]; |
| 1050 | } |
| 1051 | |
Arnaldo Carvalho de Melo | 6beba7a | 2009-10-21 17:34:06 -0200 | [diff] [blame] | 1052 | 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] | 1053 | { |
Arnaldo Carvalho de Melo | 4d1e00a | 2009-08-05 19:02:49 -0300 | [diff] [blame] | 1054 | int size = PATH_MAX; |
Arnaldo Carvalho de Melo | c338aee | 2009-11-20 20:51:27 -0200 | [diff] [blame] | 1055 | char *name; |
Arnaldo Carvalho de Melo | d3379ab | 2009-11-18 20:20:50 -0200 | [diff] [blame] | 1056 | u8 build_id[BUILD_ID_SIZE]; |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 1057 | int ret = -1; |
| 1058 | int fd; |
| 1059 | |
Arnaldo Carvalho de Melo | 8d06367 | 2009-11-04 18:50:43 -0200 | [diff] [blame] | 1060 | self->loaded = 1; |
Arnaldo Carvalho de Melo | 66bd842 | 2009-10-28 21:51:21 -0200 | [diff] [blame] | 1061 | |
Arnaldo Carvalho de Melo | c338aee | 2009-11-20 20:51:27 -0200 | [diff] [blame] | 1062 | if (self->kernel) |
| 1063 | return dso__load_kernel_sym(self, map, filter); |
| 1064 | |
| 1065 | name = malloc(size); |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 1066 | if (!name) |
| 1067 | return -1; |
| 1068 | |
Arnaldo Carvalho de Melo | 30d7a77 | 2009-07-02 21:24:14 -0300 | [diff] [blame] | 1069 | self->adjust_symbols = 0; |
Arnaldo Carvalho de Melo | f5812a7 | 2009-06-30 11:43:17 -0300 | [diff] [blame] | 1070 | |
Arnaldo Carvalho de Melo | 94cb9e3 | 2009-08-06 14:43:17 -0300 | [diff] [blame] | 1071 | if (strncmp(self->name, "/tmp/perf-", 10) == 0) { |
Arnaldo Carvalho de Melo | 6beba7a | 2009-10-21 17:34:06 -0200 | [diff] [blame] | 1072 | ret = dso__load_perf_map(self, map, filter); |
Arnaldo Carvalho de Melo | 94cb9e3 | 2009-08-06 14:43:17 -0300 | [diff] [blame] | 1073 | self->origin = ret > 0 ? DSO__ORIG_JAVA_JIT : |
| 1074 | DSO__ORIG_NOT_FOUND; |
| 1075 | return ret; |
| 1076 | } |
| 1077 | |
| 1078 | self->origin = DSO__ORIG_FEDORA - 1; |
Pekka Enberg | 80d496b | 2009-06-08 21:12:48 +0300 | [diff] [blame] | 1079 | |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 1080 | more: |
| 1081 | do { |
Arnaldo Carvalho de Melo | 94cb9e3 | 2009-08-06 14:43:17 -0300 | [diff] [blame] | 1082 | self->origin++; |
| 1083 | switch (self->origin) { |
| 1084 | case DSO__ORIG_FEDORA: |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1085 | snprintf(name, size, "/usr/lib/debug%s.debug", |
| 1086 | self->long_name); |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 1087 | break; |
Arnaldo Carvalho de Melo | 94cb9e3 | 2009-08-06 14:43:17 -0300 | [diff] [blame] | 1088 | case DSO__ORIG_UBUNTU: |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1089 | snprintf(name, size, "/usr/lib/debug%s", |
| 1090 | self->long_name); |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 1091 | break; |
Arnaldo Carvalho de Melo | 94cb9e3 | 2009-08-06 14:43:17 -0300 | [diff] [blame] | 1092 | case DSO__ORIG_BUILDID: |
Arnaldo Carvalho de Melo | d3379ab | 2009-11-18 20:20:50 -0200 | [diff] [blame] | 1093 | if (filename__read_build_id(self->long_name, build_id, |
| 1094 | sizeof(build_id))) { |
| 1095 | char build_id_hex[BUILD_ID_SIZE * 2 + 1]; |
| 1096 | |
| 1097 | build_id__sprintf(build_id, sizeof(build_id), |
| 1098 | build_id_hex); |
Arnaldo Carvalho de Melo | 4d1e00a | 2009-08-05 19:02:49 -0300 | [diff] [blame] | 1099 | snprintf(name, size, |
| 1100 | "/usr/lib/debug/.build-id/%.2s/%s.debug", |
Arnaldo Carvalho de Melo | d3379ab | 2009-11-18 20:20:50 -0200 | [diff] [blame] | 1101 | build_id_hex, build_id_hex + 2); |
| 1102 | if (self->has_build_id) |
| 1103 | goto compare_build_id; |
| 1104 | break; |
Arnaldo Carvalho de Melo | 4d1e00a | 2009-08-05 19:02:49 -0300 | [diff] [blame] | 1105 | } |
Arnaldo Carvalho de Melo | 94cb9e3 | 2009-08-06 14:43:17 -0300 | [diff] [blame] | 1106 | self->origin++; |
Arnaldo Carvalho de Melo | 4d1e00a | 2009-08-05 19:02:49 -0300 | [diff] [blame] | 1107 | /* Fall thru */ |
Arnaldo Carvalho de Melo | 94cb9e3 | 2009-08-06 14:43:17 -0300 | [diff] [blame] | 1108 | case DSO__ORIG_DSO: |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1109 | snprintf(name, size, "%s", self->long_name); |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 1110 | break; |
| 1111 | |
| 1112 | default: |
| 1113 | goto out; |
| 1114 | } |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 1115 | |
Arnaldo Carvalho de Melo | 8d06367 | 2009-11-04 18:50:43 -0200 | [diff] [blame] | 1116 | if (self->has_build_id) { |
Arnaldo Carvalho de Melo | d3379ab | 2009-11-18 20:20:50 -0200 | [diff] [blame] | 1117 | if (filename__read_build_id(name, build_id, |
| 1118 | sizeof(build_id)) < 0) |
Arnaldo Carvalho de Melo | 8d06367 | 2009-11-04 18:50:43 -0200 | [diff] [blame] | 1119 | goto more; |
Arnaldo Carvalho de Melo | 8d06367 | 2009-11-04 18:50:43 -0200 | [diff] [blame] | 1120 | compare_build_id: |
Arnaldo Carvalho de Melo | 78075ca | 2009-11-20 20:51:26 -0200 | [diff] [blame] | 1121 | if (!dso__build_id_equal(self, build_id)) |
Arnaldo Carvalho de Melo | 8d06367 | 2009-11-04 18:50:43 -0200 | [diff] [blame] | 1122 | goto more; |
| 1123 | } |
| 1124 | |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 1125 | fd = open(name, O_RDONLY); |
| 1126 | } while (fd < 0); |
| 1127 | |
Arnaldo Carvalho de Melo | 6beba7a | 2009-10-21 17:34:06 -0200 | [diff] [blame] | 1128 | 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] | 1129 | close(fd); |
| 1130 | |
| 1131 | /* |
| 1132 | * Some people seem to have debuginfo files _WITHOUT_ debug info!?!? |
| 1133 | */ |
| 1134 | if (!ret) |
| 1135 | goto more; |
| 1136 | |
Arnaldo Carvalho de Melo | a25e46c | 2009-07-11 12:18:36 -0300 | [diff] [blame] | 1137 | if (ret > 0) { |
Arnaldo Carvalho de Melo | 8216416 | 2009-11-16 13:48:11 -0200 | [diff] [blame] | 1138 | int nr_plt = dso__synthesize_plt_symbols(self, map, filter); |
Arnaldo Carvalho de Melo | a25e46c | 2009-07-11 12:18:36 -0300 | [diff] [blame] | 1139 | if (nr_plt > 0) |
| 1140 | ret += nr_plt; |
| 1141 | } |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 1142 | out: |
| 1143 | free(name); |
Arnaldo Carvalho de Melo | 1340e6b | 2009-08-11 17:04:36 -0300 | [diff] [blame] | 1144 | if (ret < 0 && strstr(self->name, " (deleted)") != NULL) |
| 1145 | return 0; |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 1146 | return ret; |
| 1147 | } |
| 1148 | |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1149 | struct map *kernel_map; |
| 1150 | |
| 1151 | static void kernel_maps__insert(struct map *map) |
Mike Galbraith | 6cfcc53 | 2009-07-02 08:08:36 +0200 | [diff] [blame] | 1152 | { |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1153 | maps__insert(&kernel_maps, map); |
| 1154 | } |
Mike Galbraith | 6cfcc53 | 2009-07-02 08:08:36 +0200 | [diff] [blame] | 1155 | |
Arnaldo Carvalho de Melo | c338aee | 2009-11-20 20:51:27 -0200 | [diff] [blame] | 1156 | struct symbol *kernel_maps__find_symbol(u64 ip, struct map **mapp, |
| 1157 | symbol_filter_t filter) |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1158 | { |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1159 | struct map *map = maps__find(&kernel_maps, ip); |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1160 | |
| 1161 | if (mapp) |
| 1162 | *mapp = map; |
| 1163 | |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 1164 | if (map) { |
| 1165 | ip = map->map_ip(map, ip); |
Arnaldo Carvalho de Melo | c338aee | 2009-11-20 20:51:27 -0200 | [diff] [blame] | 1166 | return map__find_symbol(map, ip, filter); |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 1167 | } |
| 1168 | |
| 1169 | return NULL; |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1170 | } |
| 1171 | |
| 1172 | struct map *kernel_maps__find_by_dso_name(const char *name) |
| 1173 | { |
| 1174 | struct rb_node *nd; |
| 1175 | |
| 1176 | for (nd = rb_first(&kernel_maps); nd; nd = rb_next(nd)) { |
| 1177 | struct map *map = rb_entry(nd, struct map, rb_node); |
| 1178 | |
| 1179 | if (map->dso && strcmp(map->dso->name, name) == 0) |
| 1180 | return map; |
| 1181 | } |
| 1182 | |
| 1183 | return NULL; |
| 1184 | } |
| 1185 | |
Arnaldo Carvalho de Melo | c338aee | 2009-11-20 20:51:27 -0200 | [diff] [blame] | 1186 | static int dsos__set_modules_path_dir(char *dirname) |
Mike Galbraith | 6cfcc53 | 2009-07-02 08:08:36 +0200 | [diff] [blame] | 1187 | { |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1188 | struct dirent *dent; |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1189 | DIR *dir = opendir(dirname); |
Mike Galbraith | 6cfcc53 | 2009-07-02 08:08:36 +0200 | [diff] [blame] | 1190 | |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1191 | if (!dir) { |
Arnaldo Carvalho de Melo | 6beba7a | 2009-10-21 17:34:06 -0200 | [diff] [blame] | 1192 | pr_err("%s: cannot open %s dir\n", __func__, dirname); |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1193 | return -1; |
Mike Galbraith | 6cfcc53 | 2009-07-02 08:08:36 +0200 | [diff] [blame] | 1194 | } |
| 1195 | |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1196 | while ((dent = readdir(dir)) != NULL) { |
| 1197 | char path[PATH_MAX]; |
Mike Galbraith | 6cfcc53 | 2009-07-02 08:08:36 +0200 | [diff] [blame] | 1198 | |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1199 | if (dent->d_type == DT_DIR) { |
| 1200 | if (!strcmp(dent->d_name, ".") || |
| 1201 | !strcmp(dent->d_name, "..")) |
| 1202 | continue; |
Mike Galbraith | 6cfcc53 | 2009-07-02 08:08:36 +0200 | [diff] [blame] | 1203 | |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1204 | snprintf(path, sizeof(path), "%s/%s", |
| 1205 | dirname, dent->d_name); |
Arnaldo Carvalho de Melo | c338aee | 2009-11-20 20:51:27 -0200 | [diff] [blame] | 1206 | if (dsos__set_modules_path_dir(path) < 0) |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1207 | goto failure; |
| 1208 | } else { |
| 1209 | char *dot = strrchr(dent->d_name, '.'), |
| 1210 | dso_name[PATH_MAX]; |
| 1211 | struct map *map; |
Arnaldo Carvalho de Melo | cfc10d3 | 2009-11-17 15:40:53 -0200 | [diff] [blame] | 1212 | char *long_name; |
Mike Galbraith | 6cfcc53 | 2009-07-02 08:08:36 +0200 | [diff] [blame] | 1213 | |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1214 | if (dot == NULL || strcmp(dot, ".ko")) |
| 1215 | continue; |
| 1216 | snprintf(dso_name, sizeof(dso_name), "[%.*s]", |
| 1217 | (int)(dot - dent->d_name), dent->d_name); |
Mike Galbraith | 6cfcc53 | 2009-07-02 08:08:36 +0200 | [diff] [blame] | 1218 | |
Arnaldo Carvalho de Melo | a2a99e8 | 2009-10-05 14:26:18 -0300 | [diff] [blame] | 1219 | strxfrchar(dso_name, '-', '_'); |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1220 | map = kernel_maps__find_by_dso_name(dso_name); |
| 1221 | if (map == NULL) |
| 1222 | continue; |
Mike Galbraith | 6cfcc53 | 2009-07-02 08:08:36 +0200 | [diff] [blame] | 1223 | |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1224 | snprintf(path, sizeof(path), "%s/%s", |
| 1225 | dirname, dent->d_name); |
Mike Galbraith | 6cfcc53 | 2009-07-02 08:08:36 +0200 | [diff] [blame] | 1226 | |
Arnaldo Carvalho de Melo | cfc10d3 | 2009-11-17 15:40:53 -0200 | [diff] [blame] | 1227 | long_name = strdup(path); |
| 1228 | if (long_name == NULL) |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1229 | goto failure; |
Arnaldo Carvalho de Melo | cfc10d3 | 2009-11-17 15:40:53 -0200 | [diff] [blame] | 1230 | dso__set_long_name(map->dso, long_name); |
Mike Galbraith | 6cfcc53 | 2009-07-02 08:08:36 +0200 | [diff] [blame] | 1231 | } |
Mike Galbraith | 6cfcc53 | 2009-07-02 08:08:36 +0200 | [diff] [blame] | 1232 | } |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1233 | |
Arnaldo Carvalho de Melo | c338aee | 2009-11-20 20:51:27 -0200 | [diff] [blame] | 1234 | return 0; |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1235 | failure: |
| 1236 | closedir(dir); |
| 1237 | return -1; |
Mike Galbraith | 6cfcc53 | 2009-07-02 08:08:36 +0200 | [diff] [blame] | 1238 | } |
| 1239 | |
Arnaldo Carvalho de Melo | c338aee | 2009-11-20 20:51:27 -0200 | [diff] [blame] | 1240 | static int dsos__set_modules_path(void) |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1241 | { |
| 1242 | struct utsname uts; |
| 1243 | char modules_path[PATH_MAX]; |
| 1244 | |
| 1245 | if (uname(&uts) < 0) |
| 1246 | return -1; |
| 1247 | |
| 1248 | snprintf(modules_path, sizeof(modules_path), "/lib/modules/%s/kernel", |
| 1249 | uts.release); |
| 1250 | |
Arnaldo Carvalho de Melo | c338aee | 2009-11-20 20:51:27 -0200 | [diff] [blame] | 1251 | return dsos__set_modules_path_dir(modules_path); |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1252 | } |
| 1253 | |
| 1254 | /* |
| 1255 | * Constructor variant for modules (where we know from /proc/modules where |
| 1256 | * they are loaded) and for vmlinux, where only after we load all the |
| 1257 | * symbols we'll know where it starts and ends. |
| 1258 | */ |
| 1259 | static struct map *map__new2(u64 start, struct dso *dso) |
| 1260 | { |
| 1261 | struct map *self = malloc(sizeof(*self)); |
| 1262 | |
| 1263 | if (self != NULL) { |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1264 | /* |
Arnaldo Carvalho de Melo | afb7b4f | 2009-10-30 16:28:23 -0200 | [diff] [blame] | 1265 | * ->end will be filled after we load all the symbols |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1266 | */ |
Arnaldo Carvalho de Melo | afb7b4f | 2009-10-30 16:28:23 -0200 | [diff] [blame] | 1267 | map__init(self, start, 0, 0, dso); |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1268 | } |
Arnaldo Carvalho de Melo | afb7b4f | 2009-10-30 16:28:23 -0200 | [diff] [blame] | 1269 | |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1270 | return self; |
| 1271 | } |
| 1272 | |
Arnaldo Carvalho de Melo | c338aee | 2009-11-20 20:51:27 -0200 | [diff] [blame] | 1273 | static int kernel_maps__create_module_maps(void) |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1274 | { |
| 1275 | char *line = NULL; |
| 1276 | size_t n; |
| 1277 | FILE *file = fopen("/proc/modules", "r"); |
| 1278 | struct map *map; |
| 1279 | |
| 1280 | if (file == NULL) |
| 1281 | return -1; |
| 1282 | |
| 1283 | while (!feof(file)) { |
| 1284 | char name[PATH_MAX]; |
| 1285 | u64 start; |
| 1286 | struct dso *dso; |
| 1287 | char *sep; |
| 1288 | int line_len; |
| 1289 | |
| 1290 | line_len = getline(&line, &n, file); |
| 1291 | if (line_len < 0) |
| 1292 | break; |
| 1293 | |
| 1294 | if (!line) |
| 1295 | goto out_failure; |
| 1296 | |
| 1297 | line[--line_len] = '\0'; /* \n */ |
| 1298 | |
| 1299 | sep = strrchr(line, 'x'); |
| 1300 | if (sep == NULL) |
| 1301 | continue; |
| 1302 | |
| 1303 | hex2u64(sep + 1, &start); |
| 1304 | |
| 1305 | sep = strchr(line, ' '); |
| 1306 | if (sep == NULL) |
| 1307 | continue; |
| 1308 | |
| 1309 | *sep = '\0'; |
| 1310 | |
| 1311 | snprintf(name, sizeof(name), "[%s]", line); |
Arnaldo Carvalho de Melo | 00a192b | 2009-10-30 16:28:24 -0200 | [diff] [blame] | 1312 | dso = dso__new(name); |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1313 | |
| 1314 | if (dso == NULL) |
| 1315 | goto out_delete_line; |
| 1316 | |
| 1317 | map = map__new2(start, dso); |
| 1318 | if (map == NULL) { |
| 1319 | dso__delete(dso); |
| 1320 | goto out_delete_line; |
| 1321 | } |
| 1322 | |
Arnaldo Carvalho de Melo | f1617b4 | 2009-11-18 20:20:52 -0200 | [diff] [blame] | 1323 | snprintf(name, sizeof(name), |
| 1324 | "/sys/module/%s/notes/.note.gnu.build-id", line); |
| 1325 | if (sysfs__read_build_id(name, dso->build_id, |
| 1326 | sizeof(dso->build_id)) == 0) |
| 1327 | dso->has_build_id = true; |
| 1328 | |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1329 | dso->origin = DSO__ORIG_KMODULE; |
| 1330 | kernel_maps__insert(map); |
| 1331 | dsos__add(dso); |
| 1332 | } |
| 1333 | |
| 1334 | free(line); |
| 1335 | fclose(file); |
| 1336 | |
Arnaldo Carvalho de Melo | c338aee | 2009-11-20 20:51:27 -0200 | [diff] [blame] | 1337 | return dsos__set_modules_path(); |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1338 | |
| 1339 | out_delete_line: |
| 1340 | free(line); |
| 1341 | out_failure: |
| 1342 | return -1; |
| 1343 | } |
| 1344 | |
| 1345 | 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] | 1346 | const char *vmlinux, symbol_filter_t filter) |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 1347 | { |
Arnaldo Carvalho de Melo | fbd733b | 2009-11-20 20:51:28 -0200 | [diff] [blame] | 1348 | int err = -1, fd; |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 1349 | |
Arnaldo Carvalho de Melo | fbd733b | 2009-11-20 20:51:28 -0200 | [diff] [blame] | 1350 | if (self->has_build_id) { |
| 1351 | u8 build_id[BUILD_ID_SIZE]; |
Arnaldo Carvalho de Melo | 66bd842 | 2009-10-28 21:51:21 -0200 | [diff] [blame] | 1352 | |
Arnaldo Carvalho de Melo | fbd733b | 2009-11-20 20:51:28 -0200 | [diff] [blame] | 1353 | if (filename__read_build_id(vmlinux, build_id, |
| 1354 | sizeof(build_id)) < 0) { |
| 1355 | pr_debug("No build_id in %s, ignoring it\n", vmlinux); |
| 1356 | return -1; |
| 1357 | } |
| 1358 | if (!dso__build_id_equal(self, build_id)) { |
| 1359 | char expected_build_id[BUILD_ID_SIZE * 2 + 1], |
| 1360 | vmlinux_build_id[BUILD_ID_SIZE * 2 + 1]; |
| 1361 | |
| 1362 | build_id__sprintf(self->build_id, |
| 1363 | sizeof(self->build_id), |
| 1364 | expected_build_id); |
| 1365 | build_id__sprintf(build_id, sizeof(build_id), |
| 1366 | vmlinux_build_id); |
| 1367 | pr_debug("build_id in %s is %s while expected is %s, " |
| 1368 | "ignoring it\n", vmlinux, vmlinux_build_id, |
| 1369 | expected_build_id); |
| 1370 | return -1; |
| 1371 | } |
| 1372 | } |
| 1373 | |
| 1374 | fd = open(vmlinux, O_RDONLY); |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 1375 | if (fd < 0) |
| 1376 | return -1; |
| 1377 | |
Arnaldo Carvalho de Melo | fbd733b | 2009-11-20 20:51:28 -0200 | [diff] [blame] | 1378 | self->loaded = 1; |
Arnaldo Carvalho de Melo | 6beba7a | 2009-10-21 17:34:06 -0200 | [diff] [blame] | 1379 | 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] | 1380 | |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 1381 | close(fd); |
| 1382 | |
| 1383 | return err; |
| 1384 | } |
| 1385 | |
Arnaldo Carvalho de Melo | c338aee | 2009-11-20 20:51:27 -0200 | [diff] [blame] | 1386 | static int dso__load_kernel_sym(struct dso *self, struct map *map, |
| 1387 | symbol_filter_t filter) |
Arnaldo Carvalho de Melo | a827c87 | 2009-05-28 14:55:19 -0300 | [diff] [blame] | 1388 | { |
Arnaldo Carvalho de Melo | c338aee | 2009-11-20 20:51:27 -0200 | [diff] [blame] | 1389 | int err = dso__load_vmlinux(self, map, self->name, filter); |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1390 | |
Arnaldo Carvalho de Melo | ef6ae72 | 2009-11-20 20:51:29 -0200 | [diff] [blame] | 1391 | if (err <= 0) { |
Arnaldo Carvalho de Melo | c338aee | 2009-11-20 20:51:27 -0200 | [diff] [blame] | 1392 | err = kernel_maps__load_kallsyms(filter); |
Arnaldo Carvalho de Melo | ef6ae72 | 2009-11-20 20:51:29 -0200 | [diff] [blame] | 1393 | if (err > 0) |
| 1394 | dso__set_long_name(self, strdup("[kernel.kallsyms]")); |
| 1395 | } |
Arnaldo Carvalho de Melo | a827c87 | 2009-05-28 14:55:19 -0300 | [diff] [blame] | 1396 | |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1397 | if (err > 0) { |
Arnaldo Carvalho de Melo | c338aee | 2009-11-20 20:51:27 -0200 | [diff] [blame] | 1398 | map__fixup_start(map); |
| 1399 | map__fixup_end(map); |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1400 | } |
Arnaldo Carvalho de Melo | 94cb9e3 | 2009-08-06 14:43:17 -0300 | [diff] [blame] | 1401 | |
Arnaldo Carvalho de Melo | a827c87 | 2009-05-28 14:55:19 -0300 | [diff] [blame] | 1402 | return err; |
| 1403 | } |
| 1404 | |
Frederic Weisbecker | cd84c2a | 2009-08-12 10:03:49 +0200 | [diff] [blame] | 1405 | LIST_HEAD(dsos); |
Frederic Weisbecker | cd84c2a | 2009-08-12 10:03:49 +0200 | [diff] [blame] | 1406 | struct dso *vdso; |
Frederic Weisbecker | cd84c2a | 2009-08-12 10:03:49 +0200 | [diff] [blame] | 1407 | |
Ingo Molnar | 83a0944 | 2009-08-15 12:26:57 +0200 | [diff] [blame] | 1408 | const char *vmlinux_name = "vmlinux"; |
Frederic Weisbecker | cd84c2a | 2009-08-12 10:03:49 +0200 | [diff] [blame] | 1409 | |
| 1410 | static void dsos__add(struct dso *dso) |
| 1411 | { |
| 1412 | list_add_tail(&dso->node, &dsos); |
| 1413 | } |
| 1414 | |
| 1415 | static struct dso *dsos__find(const char *name) |
| 1416 | { |
| 1417 | struct dso *pos; |
| 1418 | |
| 1419 | list_for_each_entry(pos, &dsos, node) |
| 1420 | if (strcmp(pos->name, name) == 0) |
| 1421 | return pos; |
| 1422 | return NULL; |
| 1423 | } |
| 1424 | |
Arnaldo Carvalho de Melo | 00a192b | 2009-10-30 16:28:24 -0200 | [diff] [blame] | 1425 | struct dso *dsos__findnew(const char *name) |
Frederic Weisbecker | cd84c2a | 2009-08-12 10:03:49 +0200 | [diff] [blame] | 1426 | { |
| 1427 | struct dso *dso = dsos__find(name); |
Frederic Weisbecker | cd84c2a | 2009-08-12 10:03:49 +0200 | [diff] [blame] | 1428 | |
Arnaldo Carvalho de Melo | e420499 | 2009-10-20 14:25:40 -0200 | [diff] [blame] | 1429 | if (!dso) { |
Arnaldo Carvalho de Melo | 00a192b | 2009-10-30 16:28:24 -0200 | [diff] [blame] | 1430 | dso = dso__new(name); |
Arnaldo Carvalho de Melo | cfc10d3 | 2009-11-17 15:40:53 -0200 | [diff] [blame] | 1431 | if (dso != NULL) { |
Arnaldo Carvalho de Melo | e420499 | 2009-10-20 14:25:40 -0200 | [diff] [blame] | 1432 | dsos__add(dso); |
Arnaldo Carvalho de Melo | cfc10d3 | 2009-11-17 15:40:53 -0200 | [diff] [blame] | 1433 | dso__set_basename(dso); |
| 1434 | } |
Arnaldo Carvalho de Melo | 66bd842 | 2009-10-28 21:51:21 -0200 | [diff] [blame] | 1435 | } |
Frederic Weisbecker | cd84c2a | 2009-08-12 10:03:49 +0200 | [diff] [blame] | 1436 | |
| 1437 | return dso; |
Frederic Weisbecker | cd84c2a | 2009-08-12 10:03:49 +0200 | [diff] [blame] | 1438 | } |
| 1439 | |
| 1440 | void dsos__fprintf(FILE *fp) |
| 1441 | { |
| 1442 | struct dso *pos; |
| 1443 | |
| 1444 | list_for_each_entry(pos, &dsos, node) |
| 1445 | dso__fprintf(pos, fp); |
| 1446 | } |
| 1447 | |
Arnaldo Carvalho de Melo | 9e03eb2 | 2009-11-16 16:32:44 -0200 | [diff] [blame] | 1448 | size_t dsos__fprintf_buildid(FILE *fp) |
| 1449 | { |
| 1450 | struct dso *pos; |
| 1451 | size_t ret = 0; |
| 1452 | |
| 1453 | list_for_each_entry(pos, &dsos, node) { |
| 1454 | ret += dso__fprintf_buildid(pos, fp); |
Arnaldo Carvalho de Melo | 1124ba7 | 2009-11-16 21:45:25 -0200 | [diff] [blame] | 1455 | ret += fprintf(fp, " %s\n", pos->long_name); |
Arnaldo Carvalho de Melo | 9e03eb2 | 2009-11-16 16:32:44 -0200 | [diff] [blame] | 1456 | } |
| 1457 | return ret; |
| 1458 | } |
| 1459 | |
Arnaldo Carvalho de Melo | c338aee | 2009-11-20 20:51:27 -0200 | [diff] [blame] | 1460 | static int kernel_maps__create_kernel_map(void) |
Frederic Weisbecker | cd84c2a | 2009-08-12 10:03:49 +0200 | [diff] [blame] | 1461 | { |
Arnaldo Carvalho de Melo | 2446042 | 2009-11-18 20:20:53 -0200 | [diff] [blame] | 1462 | struct dso *kernel = dso__new(vmlinux_name); |
Frederic Weisbecker | cd84c2a | 2009-08-12 10:03:49 +0200 | [diff] [blame] | 1463 | |
Arnaldo Carvalho de Melo | 2446042 | 2009-11-18 20:20:53 -0200 | [diff] [blame] | 1464 | if (kernel == NULL) |
Arnaldo Carvalho de Melo | c338aee | 2009-11-20 20:51:27 -0200 | [diff] [blame] | 1465 | return -1; |
| 1466 | |
| 1467 | kernel_map = map__new2(0, kernel); |
| 1468 | if (kernel_map == NULL) |
| 1469 | goto out_delete_kernel_dso; |
| 1470 | |
| 1471 | kernel_map->map_ip = kernel_map->unmap_ip = identity__map_ip; |
Arnaldo Carvalho de Melo | 2446042 | 2009-11-18 20:20:53 -0200 | [diff] [blame] | 1472 | |
| 1473 | kernel->short_name = "[kernel]"; |
Arnaldo Carvalho de Melo | c338aee | 2009-11-20 20:51:27 -0200 | [diff] [blame] | 1474 | kernel->kernel = 1; |
Arnaldo Carvalho de Melo | 00a192b | 2009-10-30 16:28:24 -0200 | [diff] [blame] | 1475 | vdso = dso__new("[vdso]"); |
Arnaldo Carvalho de Melo | c338aee | 2009-11-20 20:51:27 -0200 | [diff] [blame] | 1476 | if (vdso == NULL) |
| 1477 | goto out_delete_kernel_map; |
Frederic Weisbecker | cd84c2a | 2009-08-12 10:03:49 +0200 | [diff] [blame] | 1478 | |
Arnaldo Carvalho de Melo | 2446042 | 2009-11-18 20:20:53 -0200 | [diff] [blame] | 1479 | if (sysfs__read_build_id("/sys/kernel/notes", kernel->build_id, |
| 1480 | sizeof(kernel->build_id)) == 0) |
| 1481 | kernel->has_build_id = true; |
| 1482 | |
Arnaldo Carvalho de Melo | c338aee | 2009-11-20 20:51:27 -0200 | [diff] [blame] | 1483 | kernel_maps__insert(kernel_map); |
Arnaldo Carvalho de Melo | 2446042 | 2009-11-18 20:20:53 -0200 | [diff] [blame] | 1484 | dsos__add(kernel); |
Frederic Weisbecker | cd84c2a | 2009-08-12 10:03:49 +0200 | [diff] [blame] | 1485 | dsos__add(vdso); |
| 1486 | |
Arnaldo Carvalho de Melo | c338aee | 2009-11-20 20:51:27 -0200 | [diff] [blame] | 1487 | return 0; |
| 1488 | |
| 1489 | out_delete_kernel_map: |
| 1490 | map__delete(kernel_map); |
| 1491 | kernel_map = NULL; |
| 1492 | out_delete_kernel_dso: |
| 1493 | dso__delete(kernel); |
| 1494 | return -1; |
Arnaldo Carvalho de Melo | 2446042 | 2009-11-18 20:20:53 -0200 | [diff] [blame] | 1495 | } |
| 1496 | |
Arnaldo Carvalho de Melo | c338aee | 2009-11-20 20:51:27 -0200 | [diff] [blame] | 1497 | int kernel_maps__init(bool use_modules) |
Arnaldo Carvalho de Melo | 2446042 | 2009-11-18 20:20:53 -0200 | [diff] [blame] | 1498 | { |
Arnaldo Carvalho de Melo | c338aee | 2009-11-20 20:51:27 -0200 | [diff] [blame] | 1499 | if (kernel_maps__create_kernel_map() < 0) |
Arnaldo Carvalho de Melo | 2446042 | 2009-11-18 20:20:53 -0200 | [diff] [blame] | 1500 | return -1; |
| 1501 | |
Arnaldo Carvalho de Melo | c338aee | 2009-11-20 20:51:27 -0200 | [diff] [blame] | 1502 | if (use_modules && kernel_maps__create_module_maps() < 0) |
| 1503 | pr_warning("Failed to load list of modules in use, " |
| 1504 | "continuing...\n"); |
Arnaldo Carvalho de Melo | 90c8321 | 2009-11-21 14:31:24 -0200 | [diff] [blame] | 1505 | /* |
| 1506 | * Now that we have all the maps created, just set the ->end of them: |
| 1507 | */ |
| 1508 | kernel_maps__fixup_end(); |
Arnaldo Carvalho de Melo | 6671cb1 | 2009-11-20 20:51:24 -0200 | [diff] [blame] | 1509 | return 0; |
Frederic Weisbecker | cd84c2a | 2009-08-12 10:03:49 +0200 | [diff] [blame] | 1510 | } |
| 1511 | |
Arnaldo Carvalho de Melo | 00a192b | 2009-10-30 16:28:24 -0200 | [diff] [blame] | 1512 | void symbol__init(unsigned int priv_size) |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 1513 | { |
| 1514 | elf_version(EV_CURRENT); |
Arnaldo Carvalho de Melo | 00a192b | 2009-10-30 16:28:24 -0200 | [diff] [blame] | 1515 | symbol__priv_size = priv_size; |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 1516 | } |