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 | 8f28827 | 2009-08-16 22:05:48 +0200 | [diff] [blame] | 7 | #include "debug.h" |
| 8 | |
Arnaldo Carvalho de Melo | b32d133 | 2009-11-24 12:05:15 -0200 | [diff] [blame^] | 9 | #include <asm/bug.h> |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 10 | #include <libelf.h> |
| 11 | #include <gelf.h> |
| 12 | #include <elf.h> |
Arnaldo Carvalho de Melo | f1617b4 | 2009-11-18 20:20:52 -0200 | [diff] [blame] | 13 | #include <limits.h> |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 14 | #include <sys/utsname.h> |
Peter Zijlstra | 2cdbc46 | 2009-08-05 14:05:16 +0200 | [diff] [blame] | 15 | |
Arnaldo Carvalho de Melo | c12e15e | 2009-11-21 14:31:25 -0200 | [diff] [blame] | 16 | #ifndef NT_GNU_BUILD_ID |
| 17 | #define NT_GNU_BUILD_ID 3 |
| 18 | #endif |
| 19 | |
Arnaldo Carvalho de Melo | 94cb9e3 | 2009-08-06 14:43:17 -0300 | [diff] [blame] | 20 | enum dso_origin { |
| 21 | DSO__ORIG_KERNEL = 0, |
| 22 | DSO__ORIG_JAVA_JIT, |
| 23 | DSO__ORIG_FEDORA, |
| 24 | DSO__ORIG_UBUNTU, |
| 25 | DSO__ORIG_BUILDID, |
| 26 | DSO__ORIG_DSO, |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 27 | DSO__ORIG_KMODULE, |
Arnaldo Carvalho de Melo | 94cb9e3 | 2009-08-06 14:43:17 -0300 | [diff] [blame] | 28 | DSO__ORIG_NOT_FOUND, |
| 29 | }; |
| 30 | |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 31 | static void dsos__add(struct dso *dso); |
| 32 | static struct dso *dsos__find(const char *name); |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 33 | static struct map *map__new2(u64 start, struct dso *dso); |
| 34 | static void kernel_maps__insert(struct map *map); |
Arnaldo Carvalho de Melo | c338aee | 2009-11-20 20:51:27 -0200 | [diff] [blame] | 35 | static int dso__load_kernel_sym(struct dso *self, struct map *map, |
| 36 | symbol_filter_t filter); |
Arnaldo Carvalho de Melo | 00a192b | 2009-10-30 16:28:24 -0200 | [diff] [blame] | 37 | unsigned int symbol__priv_size; |
Arnaldo Carvalho de Melo | cc612d8 | 2009-11-23 16:39:10 -0200 | [diff] [blame] | 38 | static int vmlinux_path__nr_entries; |
| 39 | static char **vmlinux_path; |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 40 | |
Arnaldo Carvalho de Melo | b32d133 | 2009-11-24 12:05:15 -0200 | [diff] [blame^] | 41 | static struct symbol_conf symbol_conf__defaults = { |
| 42 | .use_modules = true, |
| 43 | .try_vmlinux_path = true, |
| 44 | }; |
| 45 | |
Arnaldo Carvalho de Melo | af427bf | 2009-10-05 14:26:17 -0300 | [diff] [blame] | 46 | static struct rb_root kernel_maps; |
| 47 | |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 48 | static void dso__fixup_sym_end(struct dso *self) |
Arnaldo Carvalho de Melo | af427bf | 2009-10-05 14:26:17 -0300 | [diff] [blame] | 49 | { |
| 50 | struct rb_node *nd, *prevnd = rb_first(&self->syms); |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 51 | struct symbol *curr, *prev; |
Arnaldo Carvalho de Melo | af427bf | 2009-10-05 14:26:17 -0300 | [diff] [blame] | 52 | |
| 53 | if (prevnd == NULL) |
| 54 | return; |
| 55 | |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 56 | curr = rb_entry(prevnd, struct symbol, rb_node); |
| 57 | |
Arnaldo Carvalho de Melo | af427bf | 2009-10-05 14:26:17 -0300 | [diff] [blame] | 58 | for (nd = rb_next(prevnd); nd; nd = rb_next(nd)) { |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 59 | prev = curr; |
| 60 | curr = rb_entry(nd, struct symbol, rb_node); |
Arnaldo Carvalho de Melo | af427bf | 2009-10-05 14:26:17 -0300 | [diff] [blame] | 61 | |
| 62 | if (prev->end == prev->start) |
| 63 | prev->end = curr->start - 1; |
Arnaldo Carvalho de Melo | af427bf | 2009-10-05 14:26:17 -0300 | [diff] [blame] | 64 | } |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 65 | |
| 66 | /* Last entry */ |
| 67 | if (curr->end == curr->start) |
| 68 | curr->end = roundup(curr->start, 4096); |
Arnaldo Carvalho de Melo | af427bf | 2009-10-05 14:26:17 -0300 | [diff] [blame] | 69 | } |
| 70 | |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 71 | static void kernel_maps__fixup_end(void) |
Arnaldo Carvalho de Melo | af427bf | 2009-10-05 14:26:17 -0300 | [diff] [blame] | 72 | { |
| 73 | struct map *prev, *curr; |
| 74 | struct rb_node *nd, *prevnd = rb_first(&kernel_maps); |
| 75 | |
| 76 | if (prevnd == NULL) |
| 77 | return; |
| 78 | |
| 79 | curr = rb_entry(prevnd, struct map, rb_node); |
Arnaldo Carvalho de Melo | af427bf | 2009-10-05 14:26:17 -0300 | [diff] [blame] | 80 | |
| 81 | for (nd = rb_next(prevnd); nd; nd = rb_next(nd)) { |
| 82 | prev = curr; |
| 83 | curr = rb_entry(nd, struct map, rb_node); |
| 84 | prev->end = curr->start - 1; |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 85 | } |
Arnaldo Carvalho de Melo | 90c8321 | 2009-11-21 14:31:24 -0200 | [diff] [blame] | 86 | |
| 87 | /* |
| 88 | * We still haven't the actual symbols, so guess the |
| 89 | * last map final address. |
| 90 | */ |
| 91 | curr->end = ~0UL; |
Arnaldo Carvalho de Melo | af427bf | 2009-10-05 14:26:17 -0300 | [diff] [blame] | 92 | } |
| 93 | |
Arnaldo Carvalho de Melo | 00a192b | 2009-10-30 16:28:24 -0200 | [diff] [blame] | 94 | 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] | 95 | { |
Arnaldo Carvalho de Melo | 0085c95 | 2009-05-28 14:55:13 -0300 | [diff] [blame] | 96 | size_t namelen = strlen(name) + 1; |
Arnaldo Carvalho de Melo | 00a192b | 2009-10-30 16:28:24 -0200 | [diff] [blame] | 97 | struct symbol *self = calloc(1, (symbol__priv_size + |
| 98 | sizeof(*self) + namelen)); |
Ingo Molnar | 0b73da3 | 2009-06-06 15:48:52 +0200 | [diff] [blame] | 99 | if (!self) |
| 100 | return NULL; |
| 101 | |
Arnaldo Carvalho de Melo | 00a192b | 2009-10-30 16:28:24 -0200 | [diff] [blame] | 102 | if (symbol__priv_size) { |
| 103 | memset(self, 0, symbol__priv_size); |
| 104 | self = ((void *)self) + symbol__priv_size; |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 105 | } |
Ingo Molnar | 0b73da3 | 2009-06-06 15:48:52 +0200 | [diff] [blame] | 106 | self->start = start; |
Mike Galbraith | 6cfcc53 | 2009-07-02 08:08:36 +0200 | [diff] [blame] | 107 | self->end = len ? start + len - 1 : start; |
Arnaldo Carvalho de Melo | e420499 | 2009-10-20 14:25:40 -0200 | [diff] [blame] | 108 | |
Arnaldo Carvalho de Melo | 6beba7a | 2009-10-21 17:34:06 -0200 | [diff] [blame] | 109 | 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] | 110 | |
Ingo Molnar | 0b73da3 | 2009-06-06 15:48:52 +0200 | [diff] [blame] | 111 | memcpy(self->name, name, namelen); |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 112 | |
| 113 | return self; |
| 114 | } |
| 115 | |
Arnaldo Carvalho de Melo | 00a192b | 2009-10-30 16:28:24 -0200 | [diff] [blame] | 116 | static void symbol__delete(struct symbol *self) |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 117 | { |
Arnaldo Carvalho de Melo | 00a192b | 2009-10-30 16:28:24 -0200 | [diff] [blame] | 118 | free(((void *)self) - symbol__priv_size); |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 119 | } |
| 120 | |
| 121 | static size_t symbol__fprintf(struct symbol *self, FILE *fp) |
| 122 | { |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 123 | return fprintf(fp, " %llx-%llx %s\n", |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 124 | self->start, self->end, self->name); |
| 125 | } |
| 126 | |
Arnaldo Carvalho de Melo | cfc10d3 | 2009-11-17 15:40:53 -0200 | [diff] [blame] | 127 | static void dso__set_long_name(struct dso *self, char *name) |
| 128 | { |
Arnaldo Carvalho de Melo | ef6ae72 | 2009-11-20 20:51:29 -0200 | [diff] [blame] | 129 | if (name == NULL) |
| 130 | return; |
Arnaldo Carvalho de Melo | cfc10d3 | 2009-11-17 15:40:53 -0200 | [diff] [blame] | 131 | self->long_name = name; |
| 132 | self->long_name_len = strlen(name); |
| 133 | } |
| 134 | |
| 135 | static void dso__set_basename(struct dso *self) |
| 136 | { |
| 137 | self->short_name = basename(self->long_name); |
| 138 | } |
| 139 | |
Arnaldo Carvalho de Melo | 00a192b | 2009-10-30 16:28:24 -0200 | [diff] [blame] | 140 | struct dso *dso__new(const char *name) |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 141 | { |
| 142 | struct dso *self = malloc(sizeof(*self) + strlen(name) + 1); |
| 143 | |
| 144 | if (self != NULL) { |
| 145 | strcpy(self->name, name); |
Arnaldo Carvalho de Melo | cfc10d3 | 2009-11-17 15:40:53 -0200 | [diff] [blame] | 146 | dso__set_long_name(self, self->name); |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 147 | self->short_name = self->name; |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 148 | self->syms = RB_ROOT; |
Peter Zijlstra | fc54db5 | 2009-06-05 14:04:59 +0200 | [diff] [blame] | 149 | self->find_symbol = dso__find_symbol; |
Arnaldo Carvalho de Melo | 52d422d | 2009-07-10 22:47:28 -0300 | [diff] [blame] | 150 | self->slen_calculated = 0; |
Arnaldo Carvalho de Melo | 94cb9e3 | 2009-08-06 14:43:17 -0300 | [diff] [blame] | 151 | self->origin = DSO__ORIG_NOT_FOUND; |
Arnaldo Carvalho de Melo | 8d06367 | 2009-11-04 18:50:43 -0200 | [diff] [blame] | 152 | self->loaded = 0; |
| 153 | self->has_build_id = 0; |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 154 | } |
| 155 | |
| 156 | return self; |
| 157 | } |
| 158 | |
| 159 | static void dso__delete_symbols(struct dso *self) |
| 160 | { |
| 161 | struct symbol *pos; |
| 162 | struct rb_node *next = rb_first(&self->syms); |
| 163 | |
| 164 | while (next) { |
| 165 | pos = rb_entry(next, struct symbol, rb_node); |
| 166 | next = rb_next(&pos->rb_node); |
Arnaldo Carvalho de Melo | c8c9652 | 2009-06-01 17:50:57 -0300 | [diff] [blame] | 167 | rb_erase(&pos->rb_node, &self->syms); |
Arnaldo Carvalho de Melo | 00a192b | 2009-10-30 16:28:24 -0200 | [diff] [blame] | 168 | symbol__delete(pos); |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 169 | } |
| 170 | } |
| 171 | |
| 172 | void dso__delete(struct dso *self) |
| 173 | { |
| 174 | dso__delete_symbols(self); |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 175 | if (self->long_name != self->name) |
| 176 | free(self->long_name); |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 177 | free(self); |
| 178 | } |
| 179 | |
Arnaldo Carvalho de Melo | 8d06367 | 2009-11-04 18:50:43 -0200 | [diff] [blame] | 180 | void dso__set_build_id(struct dso *self, void *build_id) |
| 181 | { |
| 182 | memcpy(self->build_id, build_id, sizeof(self->build_id)); |
| 183 | self->has_build_id = 1; |
| 184 | } |
| 185 | |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 186 | static void dso__insert_symbol(struct dso *self, struct symbol *sym) |
| 187 | { |
| 188 | struct rb_node **p = &self->syms.rb_node; |
| 189 | struct rb_node *parent = NULL; |
Paul Mackerras | 9cffa8d | 2009-06-19 22:21:42 +1000 | [diff] [blame] | 190 | const u64 ip = sym->start; |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 191 | struct symbol *s; |
| 192 | |
| 193 | while (*p != NULL) { |
| 194 | parent = *p; |
| 195 | s = rb_entry(parent, struct symbol, rb_node); |
| 196 | if (ip < s->start) |
| 197 | p = &(*p)->rb_left; |
| 198 | else |
| 199 | p = &(*p)->rb_right; |
| 200 | } |
| 201 | rb_link_node(&sym->rb_node, parent, p); |
| 202 | rb_insert_color(&sym->rb_node, &self->syms); |
| 203 | } |
| 204 | |
Paul Mackerras | 9cffa8d | 2009-06-19 22:21:42 +1000 | [diff] [blame] | 205 | struct symbol *dso__find_symbol(struct dso *self, u64 ip) |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 206 | { |
| 207 | struct rb_node *n; |
| 208 | |
| 209 | if (self == NULL) |
| 210 | return NULL; |
| 211 | |
| 212 | n = self->syms.rb_node; |
| 213 | |
| 214 | while (n) { |
| 215 | struct symbol *s = rb_entry(n, struct symbol, rb_node); |
| 216 | |
| 217 | if (ip < s->start) |
| 218 | n = n->rb_left; |
| 219 | else if (ip > s->end) |
| 220 | n = n->rb_right; |
| 221 | else |
| 222 | return s; |
| 223 | } |
| 224 | |
| 225 | return NULL; |
| 226 | } |
| 227 | |
Arnaldo Carvalho de Melo | 8d06367 | 2009-11-04 18:50:43 -0200 | [diff] [blame] | 228 | int build_id__sprintf(u8 *self, int len, char *bf) |
| 229 | { |
| 230 | char *bid = bf; |
| 231 | u8 *raw = self; |
| 232 | int i; |
| 233 | |
| 234 | for (i = 0; i < len; ++i) { |
| 235 | sprintf(bid, "%02x", *raw); |
| 236 | ++raw; |
| 237 | bid += 2; |
| 238 | } |
| 239 | |
| 240 | return raw - self; |
| 241 | } |
| 242 | |
Arnaldo Carvalho de Melo | 9e03eb2 | 2009-11-16 16:32:44 -0200 | [diff] [blame] | 243 | size_t dso__fprintf_buildid(struct dso *self, FILE *fp) |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 244 | { |
Arnaldo Carvalho de Melo | 8d06367 | 2009-11-04 18:50:43 -0200 | [diff] [blame] | 245 | char sbuild_id[BUILD_ID_SIZE * 2 + 1]; |
Arnaldo Carvalho de Melo | 8d06367 | 2009-11-04 18:50:43 -0200 | [diff] [blame] | 246 | |
| 247 | 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] | 248 | return fprintf(fp, "%s", sbuild_id); |
| 249 | } |
| 250 | |
| 251 | size_t dso__fprintf(struct dso *self, FILE *fp) |
| 252 | { |
| 253 | struct rb_node *nd; |
| 254 | size_t ret = fprintf(fp, "dso: %s (", self->short_name); |
| 255 | |
| 256 | ret += dso__fprintf_buildid(self, fp); |
| 257 | ret += fprintf(fp, ")\n"); |
Arnaldo Carvalho de Melo | 8d06367 | 2009-11-04 18:50:43 -0200 | [diff] [blame] | 258 | |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 259 | for (nd = rb_first(&self->syms); nd; nd = rb_next(nd)) { |
| 260 | struct symbol *pos = rb_entry(nd, struct symbol, rb_node); |
| 261 | ret += symbol__fprintf(pos, fp); |
| 262 | } |
| 263 | |
| 264 | return ret; |
| 265 | } |
| 266 | |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 267 | /* |
| 268 | * Loads the function entries in /proc/kallsyms into kernel_map->dso, |
| 269 | * so that we can in the next step set the symbol ->end address and then |
| 270 | * call kernel_maps__split_kallsyms. |
| 271 | */ |
Arnaldo Carvalho de Melo | 6beba7a | 2009-10-21 17:34:06 -0200 | [diff] [blame] | 272 | static int kernel_maps__load_all_kallsyms(void) |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 273 | { |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 274 | char *line = NULL; |
| 275 | size_t n; |
| 276 | FILE *file = fopen("/proc/kallsyms", "r"); |
| 277 | |
| 278 | if (file == NULL) |
| 279 | goto out_failure; |
| 280 | |
| 281 | while (!feof(file)) { |
Paul Mackerras | 9cffa8d | 2009-06-19 22:21:42 +1000 | [diff] [blame] | 282 | u64 start; |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 283 | struct symbol *sym; |
| 284 | int line_len, len; |
| 285 | char symbol_type; |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 286 | char *symbol_name; |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 287 | |
| 288 | line_len = getline(&line, &n, file); |
| 289 | if (line_len < 0) |
| 290 | break; |
| 291 | |
| 292 | if (!line) |
| 293 | goto out_failure; |
| 294 | |
| 295 | line[--line_len] = '\0'; /* \n */ |
| 296 | |
Arnaldo Carvalho de Melo | a0055ae | 2009-06-01 17:50:19 -0300 | [diff] [blame] | 297 | len = hex2u64(line, &start); |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 298 | |
| 299 | len++; |
| 300 | if (len + 2 >= line_len) |
| 301 | continue; |
| 302 | |
| 303 | symbol_type = toupper(line[len]); |
| 304 | /* |
| 305 | * We're interested only in code ('T'ext) |
| 306 | */ |
| 307 | if (symbol_type != 'T' && symbol_type != 'W') |
| 308 | continue; |
Arnaldo Carvalho de Melo | af427bf | 2009-10-05 14:26:17 -0300 | [diff] [blame] | 309 | |
| 310 | symbol_name = line + len + 2; |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 311 | /* |
| 312 | * Will fix up the end later, when we have all symbols sorted. |
| 313 | */ |
Arnaldo Carvalho de Melo | 00a192b | 2009-10-30 16:28:24 -0200 | [diff] [blame] | 314 | sym = symbol__new(start, 0, symbol_name); |
Arnaldo Carvalho de Melo | af427bf | 2009-10-05 14:26:17 -0300 | [diff] [blame] | 315 | |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 316 | if (sym == NULL) |
| 317 | goto out_delete_line; |
| 318 | |
Arnaldo Carvalho de Melo | 8216416 | 2009-11-16 13:48:11 -0200 | [diff] [blame] | 319 | /* |
| 320 | * We will pass the symbols to the filter later, in |
| 321 | * kernel_maps__split_kallsyms, when we have split the |
| 322 | * maps per module |
| 323 | */ |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 324 | dso__insert_symbol(kernel_map->dso, sym); |
| 325 | } |
| 326 | |
| 327 | free(line); |
| 328 | fclose(file); |
| 329 | |
| 330 | return 0; |
| 331 | |
| 332 | out_delete_line: |
| 333 | free(line); |
| 334 | out_failure: |
| 335 | return -1; |
| 336 | } |
| 337 | |
| 338 | /* |
| 339 | * Split the symbols into maps, making sure there are no overlaps, i.e. the |
| 340 | * kernel range is broken in several maps, named [kernel].N, as we don't have |
| 341 | * the original ELF section names vmlinux have. |
| 342 | */ |
Arnaldo Carvalho de Melo | c338aee | 2009-11-20 20:51:27 -0200 | [diff] [blame] | 343 | static int kernel_maps__split_kallsyms(symbol_filter_t filter) |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 344 | { |
| 345 | struct map *map = kernel_map; |
| 346 | struct symbol *pos; |
| 347 | int count = 0; |
| 348 | struct rb_node *next = rb_first(&kernel_map->dso->syms); |
| 349 | int kernel_range = 0; |
| 350 | |
| 351 | while (next) { |
| 352 | char *module; |
| 353 | |
| 354 | pos = rb_entry(next, struct symbol, rb_node); |
| 355 | next = rb_next(&pos->rb_node); |
| 356 | |
| 357 | module = strchr(pos->name, '\t'); |
| 358 | if (module) { |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 359 | *module++ = '\0'; |
| 360 | |
Arnaldo Carvalho de Melo | af427bf | 2009-10-05 14:26:17 -0300 | [diff] [blame] | 361 | if (strcmp(map->dso->name, module)) { |
| 362 | map = kernel_maps__find_by_dso_name(module); |
| 363 | if (!map) { |
Arnaldo Carvalho de Melo | 6beba7a | 2009-10-21 17:34:06 -0200 | [diff] [blame] | 364 | pr_err("/proc/{kallsyms,modules} " |
| 365 | "inconsistency!\n"); |
Arnaldo Carvalho de Melo | af427bf | 2009-10-05 14:26:17 -0300 | [diff] [blame] | 366 | return -1; |
| 367 | } |
| 368 | } |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 369 | /* |
| 370 | * So that we look just like we get from .ko files, |
| 371 | * i.e. not prelinked, relative to map->start. |
| 372 | */ |
| 373 | pos->start = map->map_ip(map, pos->start); |
| 374 | pos->end = map->map_ip(map, pos->end); |
| 375 | } else if (map != kernel_map) { |
| 376 | char dso_name[PATH_MAX]; |
| 377 | struct dso *dso; |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 378 | |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 379 | snprintf(dso_name, sizeof(dso_name), "[kernel].%d", |
| 380 | kernel_range++); |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 381 | |
Arnaldo Carvalho de Melo | 00a192b | 2009-10-30 16:28:24 -0200 | [diff] [blame] | 382 | dso = dso__new(dso_name); |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 383 | if (dso == NULL) |
| 384 | return -1; |
| 385 | |
| 386 | map = map__new2(pos->start, dso); |
| 387 | if (map == NULL) { |
| 388 | dso__delete(dso); |
| 389 | return -1; |
| 390 | } |
| 391 | |
Arnaldo Carvalho de Melo | ed52ce2 | 2009-10-19 17:17:57 -0200 | [diff] [blame] | 392 | map->map_ip = map->unmap_ip = identity__map_ip; |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 393 | kernel_maps__insert(map); |
| 394 | ++kernel_range; |
| 395 | } |
| 396 | |
| 397 | if (filter && filter(map, pos)) { |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 398 | rb_erase(&pos->rb_node, &kernel_map->dso->syms); |
Arnaldo Carvalho de Melo | 00a192b | 2009-10-30 16:28:24 -0200 | [diff] [blame] | 399 | symbol__delete(pos); |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 400 | } else { |
| 401 | if (map != kernel_map) { |
| 402 | rb_erase(&pos->rb_node, &kernel_map->dso->syms); |
| 403 | dso__insert_symbol(map->dso, pos); |
| 404 | } |
Mike Galbraith | 9974f49 | 2009-07-02 08:05:58 +0200 | [diff] [blame] | 405 | count++; |
| 406 | } |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 407 | } |
| 408 | |
Mike Galbraith | 9974f49 | 2009-07-02 08:05:58 +0200 | [diff] [blame] | 409 | return count; |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 410 | } |
| 411 | |
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 | static int kernel_maps__load_kallsyms(symbol_filter_t filter) |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 414 | { |
Arnaldo Carvalho de Melo | 6beba7a | 2009-10-21 17:34:06 -0200 | [diff] [blame] | 415 | if (kernel_maps__load_all_kallsyms()) |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 416 | return -1; |
| 417 | |
| 418 | dso__fixup_sym_end(kernel_map->dso); |
Arnaldo Carvalho de Melo | c338aee | 2009-11-20 20:51:27 -0200 | [diff] [blame] | 419 | kernel_map->dso->origin = DSO__ORIG_KERNEL; |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 420 | |
Arnaldo Carvalho de Melo | c338aee | 2009-11-20 20:51:27 -0200 | [diff] [blame] | 421 | return kernel_maps__split_kallsyms(filter); |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 422 | } |
| 423 | |
Arnaldo Carvalho de Melo | c338aee | 2009-11-20 20:51:27 -0200 | [diff] [blame] | 424 | size_t kernel_maps__fprintf(FILE *fp) |
Arnaldo Carvalho de Melo | af427bf | 2009-10-05 14:26:17 -0300 | [diff] [blame] | 425 | { |
Arnaldo Carvalho de Melo | 6beba7a | 2009-10-21 17:34:06 -0200 | [diff] [blame] | 426 | size_t printed = fprintf(fp, "Kernel maps:\n"); |
Arnaldo Carvalho de Melo | af427bf | 2009-10-05 14:26:17 -0300 | [diff] [blame] | 427 | struct rb_node *nd; |
| 428 | |
Arnaldo Carvalho de Melo | af427bf | 2009-10-05 14:26:17 -0300 | [diff] [blame] | 429 | for (nd = rb_first(&kernel_maps); nd; nd = rb_next(nd)) { |
| 430 | struct map *pos = rb_entry(nd, struct map, rb_node); |
| 431 | |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 432 | printed += fprintf(fp, "Map:"); |
Arnaldo Carvalho de Melo | af427bf | 2009-10-05 14:26:17 -0300 | [diff] [blame] | 433 | printed += map__fprintf(pos, fp); |
Arnaldo Carvalho de Melo | 6beba7a | 2009-10-21 17:34:06 -0200 | [diff] [blame] | 434 | if (verbose > 1) { |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 435 | printed += dso__fprintf(pos->dso, fp); |
| 436 | printed += fprintf(fp, "--\n"); |
| 437 | } |
Arnaldo Carvalho de Melo | af427bf | 2009-10-05 14:26:17 -0300 | [diff] [blame] | 438 | } |
| 439 | |
Arnaldo Carvalho de Melo | 6beba7a | 2009-10-21 17:34:06 -0200 | [diff] [blame] | 440 | return printed + fprintf(fp, "END kernel maps\n"); |
Arnaldo Carvalho de Melo | af427bf | 2009-10-05 14:26:17 -0300 | [diff] [blame] | 441 | } |
| 442 | |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 443 | 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] | 444 | symbol_filter_t filter) |
Pekka Enberg | 80d496b | 2009-06-08 21:12:48 +0300 | [diff] [blame] | 445 | { |
| 446 | char *line = NULL; |
| 447 | size_t n; |
| 448 | FILE *file; |
| 449 | int nr_syms = 0; |
| 450 | |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 451 | file = fopen(self->long_name, "r"); |
Pekka Enberg | 80d496b | 2009-06-08 21:12:48 +0300 | [diff] [blame] | 452 | if (file == NULL) |
| 453 | goto out_failure; |
| 454 | |
| 455 | while (!feof(file)) { |
Paul Mackerras | 9cffa8d | 2009-06-19 22:21:42 +1000 | [diff] [blame] | 456 | u64 start, size; |
Pekka Enberg | 80d496b | 2009-06-08 21:12:48 +0300 | [diff] [blame] | 457 | struct symbol *sym; |
| 458 | int line_len, len; |
| 459 | |
| 460 | line_len = getline(&line, &n, file); |
| 461 | if (line_len < 0) |
| 462 | break; |
| 463 | |
| 464 | if (!line) |
| 465 | goto out_failure; |
| 466 | |
| 467 | line[--line_len] = '\0'; /* \n */ |
| 468 | |
| 469 | len = hex2u64(line, &start); |
| 470 | |
| 471 | len++; |
| 472 | if (len + 2 >= line_len) |
| 473 | continue; |
| 474 | |
| 475 | len += hex2u64(line + len, &size); |
| 476 | |
| 477 | len++; |
| 478 | if (len + 2 >= line_len) |
| 479 | continue; |
| 480 | |
Arnaldo Carvalho de Melo | 00a192b | 2009-10-30 16:28:24 -0200 | [diff] [blame] | 481 | sym = symbol__new(start, size, line + len); |
Pekka Enberg | 80d496b | 2009-06-08 21:12:48 +0300 | [diff] [blame] | 482 | |
| 483 | if (sym == NULL) |
| 484 | goto out_delete_line; |
| 485 | |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 486 | if (filter && filter(map, sym)) |
Arnaldo Carvalho de Melo | 00a192b | 2009-10-30 16:28:24 -0200 | [diff] [blame] | 487 | symbol__delete(sym); |
Pekka Enberg | 80d496b | 2009-06-08 21:12:48 +0300 | [diff] [blame] | 488 | else { |
| 489 | dso__insert_symbol(self, sym); |
| 490 | nr_syms++; |
| 491 | } |
| 492 | } |
| 493 | |
| 494 | free(line); |
| 495 | fclose(file); |
| 496 | |
| 497 | return nr_syms; |
| 498 | |
| 499 | out_delete_line: |
| 500 | free(line); |
| 501 | out_failure: |
| 502 | return -1; |
| 503 | } |
| 504 | |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 505 | /** |
| 506 | * elf_symtab__for_each_symbol - iterate thru all the symbols |
| 507 | * |
| 508 | * @self: struct elf_symtab instance to iterate |
Ingo Molnar | 83a0944 | 2009-08-15 12:26:57 +0200 | [diff] [blame] | 509 | * @idx: uint32_t idx |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 510 | * @sym: GElf_Sym iterator |
| 511 | */ |
Ingo Molnar | 83a0944 | 2009-08-15 12:26:57 +0200 | [diff] [blame] | 512 | #define elf_symtab__for_each_symbol(syms, nr_syms, idx, sym) \ |
| 513 | for (idx = 0, gelf_getsym(syms, idx, &sym);\ |
| 514 | idx < nr_syms; \ |
| 515 | idx++, gelf_getsym(syms, idx, &sym)) |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 516 | |
| 517 | static inline uint8_t elf_sym__type(const GElf_Sym *sym) |
| 518 | { |
| 519 | return GELF_ST_TYPE(sym->st_info); |
| 520 | } |
| 521 | |
| 522 | static inline int elf_sym__is_function(const GElf_Sym *sym) |
| 523 | { |
| 524 | return elf_sym__type(sym) == STT_FUNC && |
| 525 | sym->st_name != 0 && |
Arnaldo Carvalho de Melo | 8183313 | 2009-10-05 23:35:03 -0300 | [diff] [blame] | 526 | sym->st_shndx != SHN_UNDEF; |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 527 | } |
| 528 | |
Mike Galbraith | 6cfcc53 | 2009-07-02 08:08:36 +0200 | [diff] [blame] | 529 | static inline int elf_sym__is_label(const GElf_Sym *sym) |
| 530 | { |
| 531 | return elf_sym__type(sym) == STT_NOTYPE && |
| 532 | sym->st_name != 0 && |
| 533 | sym->st_shndx != SHN_UNDEF && |
| 534 | sym->st_shndx != SHN_ABS; |
| 535 | } |
| 536 | |
| 537 | static inline const char *elf_sec__name(const GElf_Shdr *shdr, |
| 538 | const Elf_Data *secstrs) |
| 539 | { |
| 540 | return secstrs->d_buf + shdr->sh_name; |
| 541 | } |
| 542 | |
| 543 | static inline int elf_sec__is_text(const GElf_Shdr *shdr, |
| 544 | const Elf_Data *secstrs) |
| 545 | { |
| 546 | return strstr(elf_sec__name(shdr, secstrs), "text") != NULL; |
| 547 | } |
| 548 | |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 549 | static inline const char *elf_sym__name(const GElf_Sym *sym, |
| 550 | const Elf_Data *symstrs) |
| 551 | { |
| 552 | return symstrs->d_buf + sym->st_name; |
| 553 | } |
| 554 | |
| 555 | static Elf_Scn *elf_section_by_name(Elf *elf, GElf_Ehdr *ep, |
| 556 | GElf_Shdr *shp, const char *name, |
Ingo Molnar | 83a0944 | 2009-08-15 12:26:57 +0200 | [diff] [blame] | 557 | size_t *idx) |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 558 | { |
| 559 | Elf_Scn *sec = NULL; |
| 560 | size_t cnt = 1; |
| 561 | |
| 562 | while ((sec = elf_nextscn(elf, sec)) != NULL) { |
| 563 | char *str; |
| 564 | |
| 565 | gelf_getshdr(sec, shp); |
| 566 | str = elf_strptr(elf, ep->e_shstrndx, shp->sh_name); |
| 567 | if (!strcmp(name, str)) { |
Ingo Molnar | 83a0944 | 2009-08-15 12:26:57 +0200 | [diff] [blame] | 568 | if (idx) |
| 569 | *idx = cnt; |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 570 | break; |
| 571 | } |
| 572 | ++cnt; |
| 573 | } |
| 574 | |
| 575 | return sec; |
| 576 | } |
| 577 | |
Arnaldo Carvalho de Melo | 8ce998d | 2009-06-03 00:54:33 -0300 | [diff] [blame] | 578 | #define elf_section__for_each_rel(reldata, pos, pos_mem, idx, nr_entries) \ |
| 579 | for (idx = 0, pos = gelf_getrel(reldata, 0, &pos_mem); \ |
| 580 | idx < nr_entries; \ |
| 581 | ++idx, pos = gelf_getrel(reldata, idx, &pos_mem)) |
| 582 | |
| 583 | #define elf_section__for_each_rela(reldata, pos, pos_mem, idx, nr_entries) \ |
| 584 | for (idx = 0, pos = gelf_getrela(reldata, 0, &pos_mem); \ |
| 585 | idx < nr_entries; \ |
| 586 | ++idx, pos = gelf_getrela(reldata, idx, &pos_mem)) |
| 587 | |
Arnaldo Carvalho de Melo | a25e46c | 2009-07-11 12:18:36 -0300 | [diff] [blame] | 588 | /* |
| 589 | * We need to check if we have a .dynsym, so that we can handle the |
| 590 | * .plt, synthesizing its symbols, that aren't on the symtabs (be it |
| 591 | * .dynsym or .symtab). |
| 592 | * And always look at the original dso, not at debuginfo packages, that |
| 593 | * have the PLT data stripped out (shdr_rel_plt.sh_type == SHT_NOBITS). |
| 594 | */ |
Arnaldo Carvalho de Melo | 8216416 | 2009-11-16 13:48:11 -0200 | [diff] [blame] | 595 | static int dso__synthesize_plt_symbols(struct dso *self, struct map *map, |
| 596 | symbol_filter_t filter) |
Arnaldo Carvalho de Melo | 8ce998d | 2009-06-03 00:54:33 -0300 | [diff] [blame] | 597 | { |
| 598 | uint32_t nr_rel_entries, idx; |
| 599 | GElf_Sym sym; |
Paul Mackerras | 9cffa8d | 2009-06-19 22:21:42 +1000 | [diff] [blame] | 600 | u64 plt_offset; |
Arnaldo Carvalho de Melo | 8ce998d | 2009-06-03 00:54:33 -0300 | [diff] [blame] | 601 | GElf_Shdr shdr_plt; |
| 602 | struct symbol *f; |
Arnaldo Carvalho de Melo | a25e46c | 2009-07-11 12:18:36 -0300 | [diff] [blame] | 603 | GElf_Shdr shdr_rel_plt, shdr_dynsym; |
Arnaldo Carvalho de Melo | 8ce998d | 2009-06-03 00:54:33 -0300 | [diff] [blame] | 604 | Elf_Data *reldata, *syms, *symstrs; |
Arnaldo Carvalho de Melo | a25e46c | 2009-07-11 12:18:36 -0300 | [diff] [blame] | 605 | Elf_Scn *scn_plt_rel, *scn_symstrs, *scn_dynsym; |
| 606 | size_t dynsym_idx; |
| 607 | GElf_Ehdr ehdr; |
Arnaldo Carvalho de Melo | 8ce998d | 2009-06-03 00:54:33 -0300 | [diff] [blame] | 608 | char sympltname[1024]; |
Arnaldo Carvalho de Melo | a25e46c | 2009-07-11 12:18:36 -0300 | [diff] [blame] | 609 | Elf *elf; |
| 610 | int nr = 0, symidx, fd, err = 0; |
Arnaldo Carvalho de Melo | 8ce998d | 2009-06-03 00:54:33 -0300 | [diff] [blame] | 611 | |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 612 | fd = open(self->long_name, O_RDONLY); |
Arnaldo Carvalho de Melo | a25e46c | 2009-07-11 12:18:36 -0300 | [diff] [blame] | 613 | if (fd < 0) |
| 614 | goto out; |
| 615 | |
Marti Raudsepp | 8408712 | 2009-10-24 19:10:36 +0300 | [diff] [blame] | 616 | elf = elf_begin(fd, PERF_ELF_C_READ_MMAP, NULL); |
Arnaldo Carvalho de Melo | a25e46c | 2009-07-11 12:18:36 -0300 | [diff] [blame] | 617 | if (elf == NULL) |
| 618 | goto out_close; |
| 619 | |
| 620 | if (gelf_getehdr(elf, &ehdr) == NULL) |
| 621 | goto out_elf_end; |
| 622 | |
| 623 | scn_dynsym = elf_section_by_name(elf, &ehdr, &shdr_dynsym, |
| 624 | ".dynsym", &dynsym_idx); |
| 625 | if (scn_dynsym == NULL) |
| 626 | goto out_elf_end; |
| 627 | |
| 628 | 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] | 629 | ".rela.plt", NULL); |
| 630 | if (scn_plt_rel == NULL) { |
Arnaldo Carvalho de Melo | a25e46c | 2009-07-11 12:18:36 -0300 | [diff] [blame] | 631 | 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] | 632 | ".rel.plt", NULL); |
| 633 | if (scn_plt_rel == NULL) |
Arnaldo Carvalho de Melo | a25e46c | 2009-07-11 12:18:36 -0300 | [diff] [blame] | 634 | goto out_elf_end; |
Arnaldo Carvalho de Melo | 8ce998d | 2009-06-03 00:54:33 -0300 | [diff] [blame] | 635 | } |
| 636 | |
Arnaldo Carvalho de Melo | a25e46c | 2009-07-11 12:18:36 -0300 | [diff] [blame] | 637 | err = -1; |
Arnaldo Carvalho de Melo | 8ce998d | 2009-06-03 00:54:33 -0300 | [diff] [blame] | 638 | |
Arnaldo Carvalho de Melo | a25e46c | 2009-07-11 12:18:36 -0300 | [diff] [blame] | 639 | if (shdr_rel_plt.sh_link != dynsym_idx) |
| 640 | goto out_elf_end; |
| 641 | |
| 642 | if (elf_section_by_name(elf, &ehdr, &shdr_plt, ".plt", NULL) == NULL) |
| 643 | goto out_elf_end; |
Arnaldo Carvalho de Melo | 8ce998d | 2009-06-03 00:54:33 -0300 | [diff] [blame] | 644 | |
| 645 | /* |
Ingo Molnar | 83a0944 | 2009-08-15 12:26:57 +0200 | [diff] [blame] | 646 | * 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] | 647 | * and the symbols in the .dynsym they refer to. |
| 648 | */ |
| 649 | reldata = elf_getdata(scn_plt_rel, NULL); |
| 650 | if (reldata == 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 | syms = elf_getdata(scn_dynsym, NULL); |
| 654 | if (syms == 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 | |
Arnaldo Carvalho de Melo | a25e46c | 2009-07-11 12:18:36 -0300 | [diff] [blame] | 657 | scn_symstrs = elf_getscn(elf, shdr_dynsym.sh_link); |
Arnaldo Carvalho de Melo | 8ce998d | 2009-06-03 00:54:33 -0300 | [diff] [blame] | 658 | if (scn_symstrs == NULL) |
Arnaldo Carvalho de Melo | a25e46c | 2009-07-11 12:18:36 -0300 | [diff] [blame] | 659 | goto out_elf_end; |
Arnaldo Carvalho de Melo | 8ce998d | 2009-06-03 00:54:33 -0300 | [diff] [blame] | 660 | |
| 661 | symstrs = elf_getdata(scn_symstrs, NULL); |
| 662 | if (symstrs == NULL) |
Arnaldo Carvalho de Melo | a25e46c | 2009-07-11 12:18:36 -0300 | [diff] [blame] | 663 | goto out_elf_end; |
Arnaldo Carvalho de Melo | 8ce998d | 2009-06-03 00:54:33 -0300 | [diff] [blame] | 664 | |
| 665 | nr_rel_entries = shdr_rel_plt.sh_size / shdr_rel_plt.sh_entsize; |
| 666 | plt_offset = shdr_plt.sh_offset; |
| 667 | |
| 668 | if (shdr_rel_plt.sh_type == SHT_RELA) { |
| 669 | GElf_Rela pos_mem, *pos; |
| 670 | |
| 671 | elf_section__for_each_rela(reldata, pos, pos_mem, idx, |
| 672 | nr_rel_entries) { |
| 673 | symidx = GELF_R_SYM(pos->r_info); |
| 674 | plt_offset += shdr_plt.sh_entsize; |
| 675 | gelf_getsym(syms, symidx, &sym); |
| 676 | snprintf(sympltname, sizeof(sympltname), |
| 677 | "%s@plt", elf_sym__name(&sym, symstrs)); |
| 678 | |
| 679 | f = symbol__new(plt_offset, shdr_plt.sh_entsize, |
Arnaldo Carvalho de Melo | 00a192b | 2009-10-30 16:28:24 -0200 | [diff] [blame] | 680 | sympltname); |
Arnaldo Carvalho de Melo | 8ce998d | 2009-06-03 00:54:33 -0300 | [diff] [blame] | 681 | if (!f) |
Arnaldo Carvalho de Melo | a25e46c | 2009-07-11 12:18:36 -0300 | [diff] [blame] | 682 | goto out_elf_end; |
Arnaldo Carvalho de Melo | 8ce998d | 2009-06-03 00:54:33 -0300 | [diff] [blame] | 683 | |
Arnaldo Carvalho de Melo | 8216416 | 2009-11-16 13:48:11 -0200 | [diff] [blame] | 684 | if (filter && filter(map, f)) |
| 685 | symbol__delete(f); |
| 686 | else { |
| 687 | dso__insert_symbol(self, f); |
| 688 | ++nr; |
| 689 | } |
Arnaldo Carvalho de Melo | 8ce998d | 2009-06-03 00:54:33 -0300 | [diff] [blame] | 690 | } |
| 691 | } else if (shdr_rel_plt.sh_type == SHT_REL) { |
| 692 | GElf_Rel pos_mem, *pos; |
| 693 | elf_section__for_each_rel(reldata, pos, pos_mem, idx, |
| 694 | nr_rel_entries) { |
| 695 | symidx = GELF_R_SYM(pos->r_info); |
| 696 | plt_offset += shdr_plt.sh_entsize; |
| 697 | gelf_getsym(syms, symidx, &sym); |
| 698 | snprintf(sympltname, sizeof(sympltname), |
| 699 | "%s@plt", elf_sym__name(&sym, symstrs)); |
| 700 | |
| 701 | f = symbol__new(plt_offset, shdr_plt.sh_entsize, |
Arnaldo Carvalho de Melo | 00a192b | 2009-10-30 16:28:24 -0200 | [diff] [blame] | 702 | sympltname); |
Arnaldo Carvalho de Melo | 8ce998d | 2009-06-03 00:54:33 -0300 | [diff] [blame] | 703 | if (!f) |
Arnaldo Carvalho de Melo | a25e46c | 2009-07-11 12:18:36 -0300 | [diff] [blame] | 704 | goto out_elf_end; |
Arnaldo Carvalho de Melo | 8ce998d | 2009-06-03 00:54:33 -0300 | [diff] [blame] | 705 | |
Arnaldo Carvalho de Melo | 8216416 | 2009-11-16 13:48:11 -0200 | [diff] [blame] | 706 | if (filter && filter(map, f)) |
| 707 | symbol__delete(f); |
| 708 | else { |
| 709 | dso__insert_symbol(self, f); |
| 710 | ++nr; |
| 711 | } |
Arnaldo Carvalho de Melo | 8ce998d | 2009-06-03 00:54:33 -0300 | [diff] [blame] | 712 | } |
Arnaldo Carvalho de Melo | 8ce998d | 2009-06-03 00:54:33 -0300 | [diff] [blame] | 713 | } |
| 714 | |
Arnaldo Carvalho de Melo | a25e46c | 2009-07-11 12:18:36 -0300 | [diff] [blame] | 715 | err = 0; |
| 716 | out_elf_end: |
| 717 | elf_end(elf); |
| 718 | out_close: |
| 719 | close(fd); |
| 720 | |
| 721 | if (err == 0) |
| 722 | return nr; |
| 723 | out: |
Arnaldo Carvalho de Melo | 6beba7a | 2009-10-21 17:34:06 -0200 | [diff] [blame] | 724 | pr_warning("%s: problems reading %s PLT info.\n", |
| 725 | __func__, self->long_name); |
Arnaldo Carvalho de Melo | a25e46c | 2009-07-11 12:18:36 -0300 | [diff] [blame] | 726 | return 0; |
Arnaldo Carvalho de Melo | 8ce998d | 2009-06-03 00:54:33 -0300 | [diff] [blame] | 727 | } |
| 728 | |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 729 | static int dso__load_sym(struct dso *self, struct map *map, const char *name, |
| 730 | int fd, symbol_filter_t filter, int kernel, |
Arnaldo Carvalho de Melo | 6beba7a | 2009-10-21 17:34:06 -0200 | [diff] [blame] | 731 | int kmodule) |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 732 | { |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 733 | struct map *curr_map = map; |
| 734 | struct dso *curr_dso = self; |
| 735 | size_t dso_name_len = strlen(self->short_name); |
Mike Galbraith | 6cfcc53 | 2009-07-02 08:08:36 +0200 | [diff] [blame] | 736 | Elf_Data *symstrs, *secstrs; |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 737 | uint32_t nr_syms; |
| 738 | int err = -1; |
Ingo Molnar | 83a0944 | 2009-08-15 12:26:57 +0200 | [diff] [blame] | 739 | uint32_t idx; |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 740 | GElf_Ehdr ehdr; |
| 741 | GElf_Shdr shdr; |
| 742 | Elf_Data *syms; |
| 743 | GElf_Sym sym; |
Arnaldo Carvalho de Melo | a25e46c | 2009-07-11 12:18:36 -0300 | [diff] [blame] | 744 | Elf_Scn *sec, *sec_strndx; |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 745 | Elf *elf; |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 746 | int nr = 0; |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 747 | |
Marti Raudsepp | 8408712 | 2009-10-24 19:10:36 +0300 | [diff] [blame] | 748 | elf = elf_begin(fd, PERF_ELF_C_READ_MMAP, NULL); |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 749 | if (elf == NULL) { |
Arnaldo Carvalho de Melo | 6beba7a | 2009-10-21 17:34:06 -0200 | [diff] [blame] | 750 | 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] | 751 | goto out_close; |
| 752 | } |
| 753 | |
| 754 | if (gelf_getehdr(elf, &ehdr) == NULL) { |
Arnaldo Carvalho de Melo | 6beba7a | 2009-10-21 17:34:06 -0200 | [diff] [blame] | 755 | pr_err("%s: cannot get elf header.\n", __func__); |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 756 | goto out_elf_end; |
| 757 | } |
| 758 | |
Arnaldo Carvalho de Melo | 8ce998d | 2009-06-03 00:54:33 -0300 | [diff] [blame] | 759 | sec = elf_section_by_name(elf, &ehdr, &shdr, ".symtab", NULL); |
| 760 | if (sec == NULL) { |
Arnaldo Carvalho de Melo | a25e46c | 2009-07-11 12:18:36 -0300 | [diff] [blame] | 761 | sec = elf_section_by_name(elf, &ehdr, &shdr, ".dynsym", NULL); |
| 762 | if (sec == NULL) |
Arnaldo Carvalho de Melo | 8ce998d | 2009-06-03 00:54:33 -0300 | [diff] [blame] | 763 | goto out_elf_end; |
Arnaldo Carvalho de Melo | 8ce998d | 2009-06-03 00:54:33 -0300 | [diff] [blame] | 764 | } |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 765 | |
| 766 | syms = elf_getdata(sec, NULL); |
| 767 | if (syms == NULL) |
| 768 | goto out_elf_end; |
| 769 | |
| 770 | sec = elf_getscn(elf, shdr.sh_link); |
| 771 | if (sec == NULL) |
| 772 | goto out_elf_end; |
| 773 | |
| 774 | symstrs = elf_getdata(sec, NULL); |
| 775 | if (symstrs == NULL) |
| 776 | goto out_elf_end; |
| 777 | |
Mike Galbraith | 6cfcc53 | 2009-07-02 08:08:36 +0200 | [diff] [blame] | 778 | sec_strndx = elf_getscn(elf, ehdr.e_shstrndx); |
| 779 | if (sec_strndx == NULL) |
| 780 | goto out_elf_end; |
| 781 | |
| 782 | secstrs = elf_getdata(sec_strndx, NULL); |
Stoyan Gaydarov | 9b30a26 | 2009-07-30 05:25:29 -0500 | [diff] [blame] | 783 | if (secstrs == NULL) |
Mike Galbraith | 6cfcc53 | 2009-07-02 08:08:36 +0200 | [diff] [blame] | 784 | goto out_elf_end; |
| 785 | |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 786 | nr_syms = shdr.sh_size / shdr.sh_entsize; |
| 787 | |
Arjan van de Ven | e9fbc9d | 2009-06-06 21:22:33 +0200 | [diff] [blame] | 788 | memset(&sym, 0, sizeof(sym)); |
Mike Galbraith | d20ff6b | 2009-07-20 14:01:38 +0200 | [diff] [blame] | 789 | if (!kernel) { |
| 790 | self->adjust_symbols = (ehdr.e_type == ET_EXEC || |
Arnaldo Carvalho de Melo | 30d7a77 | 2009-07-02 21:24:14 -0300 | [diff] [blame] | 791 | elf_section_by_name(elf, &ehdr, &shdr, |
| 792 | ".gnu.prelink_undo", |
| 793 | NULL) != NULL); |
Mike Galbraith | d20ff6b | 2009-07-20 14:01:38 +0200 | [diff] [blame] | 794 | } else self->adjust_symbols = 0; |
| 795 | |
Ingo Molnar | 83a0944 | 2009-08-15 12:26:57 +0200 | [diff] [blame] | 796 | elf_symtab__for_each_symbol(syms, nr_syms, idx, sym) { |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 797 | struct symbol *f; |
Ingo Molnar | 83a0944 | 2009-08-15 12:26:57 +0200 | [diff] [blame] | 798 | const char *elf_name; |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 799 | char *demangled = NULL; |
Mike Galbraith | 6cfcc53 | 2009-07-02 08:08:36 +0200 | [diff] [blame] | 800 | int is_label = elf_sym__is_label(&sym); |
| 801 | const char *section_name; |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 802 | |
Mike Galbraith | 6cfcc53 | 2009-07-02 08:08:36 +0200 | [diff] [blame] | 803 | if (!is_label && !elf_sym__is_function(&sym)) |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 804 | continue; |
| 805 | |
| 806 | sec = elf_getscn(elf, sym.st_shndx); |
| 807 | if (!sec) |
| 808 | goto out_elf_end; |
| 809 | |
| 810 | gelf_getshdr(sec, &shdr); |
Mike Galbraith | 6cfcc53 | 2009-07-02 08:08:36 +0200 | [diff] [blame] | 811 | |
| 812 | if (is_label && !elf_sec__is_text(&shdr, secstrs)) |
| 813 | continue; |
| 814 | |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 815 | elf_name = elf_sym__name(&sym, symstrs); |
Mike Galbraith | 6cfcc53 | 2009-07-02 08:08:36 +0200 | [diff] [blame] | 816 | section_name = elf_sec__name(&shdr, secstrs); |
Ingo Molnar | 0b73da3 | 2009-06-06 15:48:52 +0200 | [diff] [blame] | 817 | |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 818 | if (kernel || kmodule) { |
| 819 | char dso_name[PATH_MAX]; |
| 820 | |
| 821 | if (strcmp(section_name, |
| 822 | curr_dso->short_name + dso_name_len) == 0) |
| 823 | goto new_symbol; |
| 824 | |
| 825 | if (strcmp(section_name, ".text") == 0) { |
| 826 | curr_map = map; |
| 827 | curr_dso = self; |
| 828 | goto new_symbol; |
| 829 | } |
| 830 | |
| 831 | snprintf(dso_name, sizeof(dso_name), |
| 832 | "%s%s", self->short_name, section_name); |
| 833 | |
| 834 | curr_map = kernel_maps__find_by_dso_name(dso_name); |
| 835 | if (curr_map == NULL) { |
| 836 | u64 start = sym.st_value; |
| 837 | |
| 838 | if (kmodule) |
| 839 | start += map->start + shdr.sh_offset; |
| 840 | |
Arnaldo Carvalho de Melo | 00a192b | 2009-10-30 16:28:24 -0200 | [diff] [blame] | 841 | curr_dso = dso__new(dso_name); |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 842 | if (curr_dso == NULL) |
| 843 | goto out_elf_end; |
| 844 | curr_map = map__new2(start, curr_dso); |
| 845 | if (curr_map == NULL) { |
| 846 | dso__delete(curr_dso); |
| 847 | goto out_elf_end; |
| 848 | } |
Arnaldo Carvalho de Melo | ed52ce2 | 2009-10-19 17:17:57 -0200 | [diff] [blame] | 849 | curr_map->map_ip = identity__map_ip; |
| 850 | curr_map->unmap_ip = identity__map_ip; |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 851 | curr_dso->origin = DSO__ORIG_KERNEL; |
| 852 | kernel_maps__insert(curr_map); |
| 853 | dsos__add(curr_dso); |
| 854 | } else |
| 855 | curr_dso = curr_map->dso; |
| 856 | |
| 857 | goto new_symbol; |
Arnaldo Carvalho de Melo | af427bf | 2009-10-05 14:26:17 -0300 | [diff] [blame] | 858 | } |
| 859 | |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 860 | if (curr_dso->adjust_symbols) { |
Arnaldo Carvalho de Melo | 6beba7a | 2009-10-21 17:34:06 -0200 | [diff] [blame] | 861 | pr_debug2("adjusting symbol: st_value: %Lx sh_addr: " |
| 862 | "%Lx sh_offset: %Lx\n", (u64)sym.st_value, |
| 863 | (u64)shdr.sh_addr, (u64)shdr.sh_offset); |
Arnaldo Carvalho de Melo | f5812a7 | 2009-06-30 11:43:17 -0300 | [diff] [blame] | 864 | sym.st_value -= shdr.sh_addr - shdr.sh_offset; |
Arnaldo Carvalho de Melo | af427bf | 2009-10-05 14:26:17 -0300 | [diff] [blame] | 865 | } |
Arnaldo Carvalho de Melo | 28ac909 | 2009-07-20 14:14:12 -0300 | [diff] [blame] | 866 | /* |
| 867 | * We need to figure out if the object was created from C++ sources |
| 868 | * DWARF DW_compile_unit has this, but we don't always have access |
| 869 | * to it... |
| 870 | */ |
Ingo Molnar | 83a0944 | 2009-08-15 12:26:57 +0200 | [diff] [blame] | 871 | demangled = bfd_demangle(NULL, elf_name, DMGL_PARAMS | DMGL_ANSI); |
Arnaldo Carvalho de Melo | 28ac909 | 2009-07-20 14:14:12 -0300 | [diff] [blame] | 872 | if (demangled != NULL) |
Ingo Molnar | 83a0944 | 2009-08-15 12:26:57 +0200 | [diff] [blame] | 873 | elf_name = demangled; |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 874 | new_symbol: |
Arnaldo Carvalho de Melo | 00a192b | 2009-10-30 16:28:24 -0200 | [diff] [blame] | 875 | 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] | 876 | free(demangled); |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 877 | if (!f) |
| 878 | goto out_elf_end; |
| 879 | |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 880 | if (filter && filter(curr_map, f)) |
Arnaldo Carvalho de Melo | 00a192b | 2009-10-30 16:28:24 -0200 | [diff] [blame] | 881 | symbol__delete(f); |
Arnaldo Carvalho de Melo | 69ee69f | 2009-05-28 14:55:26 -0300 | [diff] [blame] | 882 | else { |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 883 | dso__insert_symbol(curr_dso, f); |
Arnaldo Carvalho de Melo | 69ee69f | 2009-05-28 14:55:26 -0300 | [diff] [blame] | 884 | nr++; |
| 885 | } |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 886 | } |
| 887 | |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 888 | /* |
| 889 | * For misannotated, zeroed, ASM function sizes. |
| 890 | */ |
| 891 | if (nr > 0) |
| 892 | dso__fixup_sym_end(self); |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 893 | err = nr; |
| 894 | out_elf_end: |
| 895 | elf_end(elf); |
| 896 | out_close: |
| 897 | return err; |
| 898 | } |
| 899 | |
Arnaldo Carvalho de Melo | 78075ca | 2009-11-20 20:51:26 -0200 | [diff] [blame] | 900 | static bool dso__build_id_equal(const struct dso *self, u8 *build_id) |
| 901 | { |
| 902 | return memcmp(self->build_id, build_id, sizeof(self->build_id)) == 0; |
| 903 | } |
| 904 | |
Arnaldo Carvalho de Melo | e30a3d1 | 2009-11-18 20:20:51 -0200 | [diff] [blame] | 905 | bool dsos__read_build_ids(void) |
Frederic Weisbecker | 57f395a | 2009-11-11 04:51:04 +0100 | [diff] [blame] | 906 | { |
Arnaldo Carvalho de Melo | e30a3d1 | 2009-11-18 20:20:51 -0200 | [diff] [blame] | 907 | bool have_build_id = false; |
Frederic Weisbecker | 57f395a | 2009-11-11 04:51:04 +0100 | [diff] [blame] | 908 | struct dso *pos; |
| 909 | |
Arnaldo Carvalho de Melo | e30a3d1 | 2009-11-18 20:20:51 -0200 | [diff] [blame] | 910 | list_for_each_entry(pos, &dsos, node) |
| 911 | if (filename__read_build_id(pos->long_name, pos->build_id, |
| 912 | sizeof(pos->build_id)) > 0) { |
| 913 | have_build_id = true; |
| 914 | pos->has_build_id = true; |
| 915 | } |
Frederic Weisbecker | 57f395a | 2009-11-11 04:51:04 +0100 | [diff] [blame] | 916 | |
Arnaldo Carvalho de Melo | e30a3d1 | 2009-11-18 20:20:51 -0200 | [diff] [blame] | 917 | return have_build_id; |
Frederic Weisbecker | 57f395a | 2009-11-11 04:51:04 +0100 | [diff] [blame] | 918 | } |
| 919 | |
Arnaldo Carvalho de Melo | fd7a346 | 2009-11-20 20:51:25 -0200 | [diff] [blame] | 920 | /* |
| 921 | * Align offset to 4 bytes as needed for note name and descriptor data. |
| 922 | */ |
| 923 | #define NOTE_ALIGN(n) (((n) + 3) & -4U) |
| 924 | |
Arnaldo Carvalho de Melo | 2643ce1 | 2009-11-03 21:46:10 -0200 | [diff] [blame] | 925 | 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] | 926 | { |
Arnaldo Carvalho de Melo | 2643ce1 | 2009-11-03 21:46:10 -0200 | [diff] [blame] | 927 | int fd, err = -1; |
Arnaldo Carvalho de Melo | 4d1e00a | 2009-08-05 19:02:49 -0300 | [diff] [blame] | 928 | GElf_Ehdr ehdr; |
| 929 | GElf_Shdr shdr; |
Arnaldo Carvalho de Melo | fd7a346 | 2009-11-20 20:51:25 -0200 | [diff] [blame] | 930 | Elf_Data *data; |
Arnaldo Carvalho de Melo | 4d1e00a | 2009-08-05 19:02:49 -0300 | [diff] [blame] | 931 | Elf_Scn *sec; |
Pekka Enberg | e57cfcd | 2009-11-22 12:29:44 +0200 | [diff] [blame] | 932 | Elf_Kind ek; |
Arnaldo Carvalho de Melo | fd7a346 | 2009-11-20 20:51:25 -0200 | [diff] [blame] | 933 | void *ptr; |
Arnaldo Carvalho de Melo | 4d1e00a | 2009-08-05 19:02:49 -0300 | [diff] [blame] | 934 | Elf *elf; |
Arnaldo Carvalho de Melo | 4d1e00a | 2009-08-05 19:02:49 -0300 | [diff] [blame] | 935 | |
Arnaldo Carvalho de Melo | 2643ce1 | 2009-11-03 21:46:10 -0200 | [diff] [blame] | 936 | if (size < BUILD_ID_SIZE) |
| 937 | goto out; |
| 938 | |
| 939 | fd = open(filename, O_RDONLY); |
Arnaldo Carvalho de Melo | 4d1e00a | 2009-08-05 19:02:49 -0300 | [diff] [blame] | 940 | if (fd < 0) |
| 941 | goto out; |
| 942 | |
Marti Raudsepp | 8408712 | 2009-10-24 19:10:36 +0300 | [diff] [blame] | 943 | elf = elf_begin(fd, PERF_ELF_C_READ_MMAP, NULL); |
Arnaldo Carvalho de Melo | 4d1e00a | 2009-08-05 19:02:49 -0300 | [diff] [blame] | 944 | if (elf == NULL) { |
Arnaldo Carvalho de Melo | 8d06367 | 2009-11-04 18:50:43 -0200 | [diff] [blame] | 945 | 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] | 946 | goto out_close; |
| 947 | } |
| 948 | |
Pekka Enberg | e57cfcd | 2009-11-22 12:29:44 +0200 | [diff] [blame] | 949 | ek = elf_kind(elf); |
| 950 | if (ek != ELF_K_ELF) |
| 951 | goto out_elf_end; |
| 952 | |
Arnaldo Carvalho de Melo | 4d1e00a | 2009-08-05 19:02:49 -0300 | [diff] [blame] | 953 | if (gelf_getehdr(elf, &ehdr) == NULL) { |
Arnaldo Carvalho de Melo | 6beba7a | 2009-10-21 17:34:06 -0200 | [diff] [blame] | 954 | pr_err("%s: cannot get elf header.\n", __func__); |
Arnaldo Carvalho de Melo | 4d1e00a | 2009-08-05 19:02:49 -0300 | [diff] [blame] | 955 | goto out_elf_end; |
| 956 | } |
| 957 | |
Arnaldo Carvalho de Melo | 2643ce1 | 2009-11-03 21:46:10 -0200 | [diff] [blame] | 958 | sec = elf_section_by_name(elf, &ehdr, &shdr, |
| 959 | ".note.gnu.build-id", NULL); |
Arnaldo Carvalho de Melo | fd7a346 | 2009-11-20 20:51:25 -0200 | [diff] [blame] | 960 | if (sec == NULL) { |
| 961 | sec = elf_section_by_name(elf, &ehdr, &shdr, |
| 962 | ".notes", NULL); |
| 963 | if (sec == NULL) |
| 964 | goto out_elf_end; |
| 965 | } |
| 966 | |
| 967 | data = elf_getdata(sec, NULL); |
| 968 | if (data == NULL) |
Arnaldo Carvalho de Melo | 4d1e00a | 2009-08-05 19:02:49 -0300 | [diff] [blame] | 969 | goto out_elf_end; |
| 970 | |
Arnaldo Carvalho de Melo | fd7a346 | 2009-11-20 20:51:25 -0200 | [diff] [blame] | 971 | ptr = data->d_buf; |
| 972 | while (ptr < (data->d_buf + data->d_size)) { |
| 973 | GElf_Nhdr *nhdr = ptr; |
| 974 | int namesz = NOTE_ALIGN(nhdr->n_namesz), |
| 975 | descsz = NOTE_ALIGN(nhdr->n_descsz); |
| 976 | const char *name; |
| 977 | |
| 978 | ptr += sizeof(*nhdr); |
| 979 | name = ptr; |
| 980 | ptr += namesz; |
| 981 | if (nhdr->n_type == NT_GNU_BUILD_ID && |
| 982 | nhdr->n_namesz == sizeof("GNU")) { |
| 983 | if (memcmp(name, "GNU", sizeof("GNU")) == 0) { |
| 984 | memcpy(bf, ptr, BUILD_ID_SIZE); |
| 985 | err = BUILD_ID_SIZE; |
| 986 | break; |
| 987 | } |
| 988 | } |
| 989 | ptr += descsz; |
| 990 | } |
Arnaldo Carvalho de Melo | 2643ce1 | 2009-11-03 21:46:10 -0200 | [diff] [blame] | 991 | out_elf_end: |
| 992 | elf_end(elf); |
| 993 | out_close: |
| 994 | close(fd); |
| 995 | out: |
| 996 | return err; |
| 997 | } |
| 998 | |
Arnaldo Carvalho de Melo | f1617b4 | 2009-11-18 20:20:52 -0200 | [diff] [blame] | 999 | int sysfs__read_build_id(const char *filename, void *build_id, size_t size) |
| 1000 | { |
| 1001 | int fd, err = -1; |
| 1002 | |
| 1003 | if (size < BUILD_ID_SIZE) |
| 1004 | goto out; |
| 1005 | |
| 1006 | fd = open(filename, O_RDONLY); |
| 1007 | if (fd < 0) |
| 1008 | goto out; |
| 1009 | |
| 1010 | while (1) { |
| 1011 | char bf[BUFSIZ]; |
| 1012 | GElf_Nhdr nhdr; |
| 1013 | int namesz, descsz; |
| 1014 | |
| 1015 | if (read(fd, &nhdr, sizeof(nhdr)) != sizeof(nhdr)) |
| 1016 | break; |
| 1017 | |
Arnaldo Carvalho de Melo | fd7a346 | 2009-11-20 20:51:25 -0200 | [diff] [blame] | 1018 | namesz = NOTE_ALIGN(nhdr.n_namesz); |
| 1019 | descsz = NOTE_ALIGN(nhdr.n_descsz); |
Arnaldo Carvalho de Melo | f1617b4 | 2009-11-18 20:20:52 -0200 | [diff] [blame] | 1020 | if (nhdr.n_type == NT_GNU_BUILD_ID && |
| 1021 | nhdr.n_namesz == sizeof("GNU")) { |
| 1022 | if (read(fd, bf, namesz) != namesz) |
| 1023 | break; |
| 1024 | if (memcmp(bf, "GNU", sizeof("GNU")) == 0) { |
| 1025 | if (read(fd, build_id, |
| 1026 | BUILD_ID_SIZE) == BUILD_ID_SIZE) { |
| 1027 | err = 0; |
| 1028 | break; |
| 1029 | } |
| 1030 | } else if (read(fd, bf, descsz) != descsz) |
| 1031 | break; |
| 1032 | } else { |
| 1033 | int n = namesz + descsz; |
| 1034 | if (read(fd, bf, n) != n) |
| 1035 | break; |
| 1036 | } |
| 1037 | } |
| 1038 | close(fd); |
| 1039 | out: |
| 1040 | return err; |
| 1041 | } |
| 1042 | |
Arnaldo Carvalho de Melo | 94cb9e3 | 2009-08-06 14:43:17 -0300 | [diff] [blame] | 1043 | char dso__symtab_origin(const struct dso *self) |
| 1044 | { |
| 1045 | static const char origin[] = { |
| 1046 | [DSO__ORIG_KERNEL] = 'k', |
| 1047 | [DSO__ORIG_JAVA_JIT] = 'j', |
| 1048 | [DSO__ORIG_FEDORA] = 'f', |
| 1049 | [DSO__ORIG_UBUNTU] = 'u', |
| 1050 | [DSO__ORIG_BUILDID] = 'b', |
| 1051 | [DSO__ORIG_DSO] = 'd', |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1052 | [DSO__ORIG_KMODULE] = 'K', |
Arnaldo Carvalho de Melo | 94cb9e3 | 2009-08-06 14:43:17 -0300 | [diff] [blame] | 1053 | }; |
| 1054 | |
| 1055 | if (self == NULL || self->origin == DSO__ORIG_NOT_FOUND) |
| 1056 | return '!'; |
| 1057 | return origin[self->origin]; |
| 1058 | } |
| 1059 | |
Arnaldo Carvalho de Melo | 6beba7a | 2009-10-21 17:34:06 -0200 | [diff] [blame] | 1060 | 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] | 1061 | { |
Arnaldo Carvalho de Melo | 4d1e00a | 2009-08-05 19:02:49 -0300 | [diff] [blame] | 1062 | int size = PATH_MAX; |
Arnaldo Carvalho de Melo | c338aee | 2009-11-20 20:51:27 -0200 | [diff] [blame] | 1063 | char *name; |
Arnaldo Carvalho de Melo | d3379ab | 2009-11-18 20:20:50 -0200 | [diff] [blame] | 1064 | u8 build_id[BUILD_ID_SIZE]; |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 1065 | int ret = -1; |
| 1066 | int fd; |
| 1067 | |
Arnaldo Carvalho de Melo | 8d06367 | 2009-11-04 18:50:43 -0200 | [diff] [blame] | 1068 | self->loaded = 1; |
Arnaldo Carvalho de Melo | 66bd842 | 2009-10-28 21:51:21 -0200 | [diff] [blame] | 1069 | |
Arnaldo Carvalho de Melo | c338aee | 2009-11-20 20:51:27 -0200 | [diff] [blame] | 1070 | if (self->kernel) |
| 1071 | return dso__load_kernel_sym(self, map, filter); |
| 1072 | |
| 1073 | name = malloc(size); |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 1074 | if (!name) |
| 1075 | return -1; |
| 1076 | |
Arnaldo Carvalho de Melo | 30d7a77 | 2009-07-02 21:24:14 -0300 | [diff] [blame] | 1077 | self->adjust_symbols = 0; |
Arnaldo Carvalho de Melo | f5812a7 | 2009-06-30 11:43:17 -0300 | [diff] [blame] | 1078 | |
Arnaldo Carvalho de Melo | 94cb9e3 | 2009-08-06 14:43:17 -0300 | [diff] [blame] | 1079 | if (strncmp(self->name, "/tmp/perf-", 10) == 0) { |
Arnaldo Carvalho de Melo | 6beba7a | 2009-10-21 17:34:06 -0200 | [diff] [blame] | 1080 | ret = dso__load_perf_map(self, map, filter); |
Arnaldo Carvalho de Melo | 94cb9e3 | 2009-08-06 14:43:17 -0300 | [diff] [blame] | 1081 | self->origin = ret > 0 ? DSO__ORIG_JAVA_JIT : |
| 1082 | DSO__ORIG_NOT_FOUND; |
| 1083 | return ret; |
| 1084 | } |
| 1085 | |
| 1086 | self->origin = DSO__ORIG_FEDORA - 1; |
Pekka Enberg | 80d496b | 2009-06-08 21:12:48 +0300 | [diff] [blame] | 1087 | |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 1088 | more: |
| 1089 | do { |
Arnaldo Carvalho de Melo | 94cb9e3 | 2009-08-06 14:43:17 -0300 | [diff] [blame] | 1090 | self->origin++; |
| 1091 | switch (self->origin) { |
| 1092 | case DSO__ORIG_FEDORA: |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1093 | snprintf(name, size, "/usr/lib/debug%s.debug", |
| 1094 | self->long_name); |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 1095 | break; |
Arnaldo Carvalho de Melo | 94cb9e3 | 2009-08-06 14:43:17 -0300 | [diff] [blame] | 1096 | case DSO__ORIG_UBUNTU: |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1097 | snprintf(name, size, "/usr/lib/debug%s", |
| 1098 | self->long_name); |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 1099 | break; |
Arnaldo Carvalho de Melo | 94cb9e3 | 2009-08-06 14:43:17 -0300 | [diff] [blame] | 1100 | case DSO__ORIG_BUILDID: |
Arnaldo Carvalho de Melo | d3379ab | 2009-11-18 20:20:50 -0200 | [diff] [blame] | 1101 | if (filename__read_build_id(self->long_name, build_id, |
| 1102 | sizeof(build_id))) { |
| 1103 | char build_id_hex[BUILD_ID_SIZE * 2 + 1]; |
| 1104 | |
| 1105 | build_id__sprintf(build_id, sizeof(build_id), |
| 1106 | build_id_hex); |
Arnaldo Carvalho de Melo | 4d1e00a | 2009-08-05 19:02:49 -0300 | [diff] [blame] | 1107 | snprintf(name, size, |
| 1108 | "/usr/lib/debug/.build-id/%.2s/%s.debug", |
Arnaldo Carvalho de Melo | d3379ab | 2009-11-18 20:20:50 -0200 | [diff] [blame] | 1109 | build_id_hex, build_id_hex + 2); |
| 1110 | if (self->has_build_id) |
| 1111 | goto compare_build_id; |
| 1112 | break; |
Arnaldo Carvalho de Melo | 4d1e00a | 2009-08-05 19:02:49 -0300 | [diff] [blame] | 1113 | } |
Arnaldo Carvalho de Melo | 94cb9e3 | 2009-08-06 14:43:17 -0300 | [diff] [blame] | 1114 | self->origin++; |
Arnaldo Carvalho de Melo | 4d1e00a | 2009-08-05 19:02:49 -0300 | [diff] [blame] | 1115 | /* Fall thru */ |
Arnaldo Carvalho de Melo | 94cb9e3 | 2009-08-06 14:43:17 -0300 | [diff] [blame] | 1116 | case DSO__ORIG_DSO: |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1117 | snprintf(name, size, "%s", self->long_name); |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 1118 | break; |
| 1119 | |
| 1120 | default: |
| 1121 | goto out; |
| 1122 | } |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 1123 | |
Arnaldo Carvalho de Melo | 8d06367 | 2009-11-04 18:50:43 -0200 | [diff] [blame] | 1124 | if (self->has_build_id) { |
Arnaldo Carvalho de Melo | d3379ab | 2009-11-18 20:20:50 -0200 | [diff] [blame] | 1125 | if (filename__read_build_id(name, build_id, |
| 1126 | sizeof(build_id)) < 0) |
Arnaldo Carvalho de Melo | 8d06367 | 2009-11-04 18:50:43 -0200 | [diff] [blame] | 1127 | goto more; |
Arnaldo Carvalho de Melo | 8d06367 | 2009-11-04 18:50:43 -0200 | [diff] [blame] | 1128 | compare_build_id: |
Arnaldo Carvalho de Melo | 78075ca | 2009-11-20 20:51:26 -0200 | [diff] [blame] | 1129 | if (!dso__build_id_equal(self, build_id)) |
Arnaldo Carvalho de Melo | 8d06367 | 2009-11-04 18:50:43 -0200 | [diff] [blame] | 1130 | goto more; |
| 1131 | } |
| 1132 | |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 1133 | fd = open(name, O_RDONLY); |
| 1134 | } while (fd < 0); |
| 1135 | |
Arnaldo Carvalho de Melo | 6beba7a | 2009-10-21 17:34:06 -0200 | [diff] [blame] | 1136 | 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] | 1137 | close(fd); |
| 1138 | |
| 1139 | /* |
| 1140 | * Some people seem to have debuginfo files _WITHOUT_ debug info!?!? |
| 1141 | */ |
| 1142 | if (!ret) |
| 1143 | goto more; |
| 1144 | |
Arnaldo Carvalho de Melo | a25e46c | 2009-07-11 12:18:36 -0300 | [diff] [blame] | 1145 | if (ret > 0) { |
Arnaldo Carvalho de Melo | 8216416 | 2009-11-16 13:48:11 -0200 | [diff] [blame] | 1146 | int nr_plt = dso__synthesize_plt_symbols(self, map, filter); |
Arnaldo Carvalho de Melo | a25e46c | 2009-07-11 12:18:36 -0300 | [diff] [blame] | 1147 | if (nr_plt > 0) |
| 1148 | ret += nr_plt; |
| 1149 | } |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 1150 | out: |
| 1151 | free(name); |
Arnaldo Carvalho de Melo | 1340e6b | 2009-08-11 17:04:36 -0300 | [diff] [blame] | 1152 | if (ret < 0 && strstr(self->name, " (deleted)") != NULL) |
| 1153 | return 0; |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 1154 | return ret; |
| 1155 | } |
| 1156 | |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1157 | struct map *kernel_map; |
| 1158 | |
| 1159 | static void kernel_maps__insert(struct map *map) |
Mike Galbraith | 6cfcc53 | 2009-07-02 08:08:36 +0200 | [diff] [blame] | 1160 | { |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1161 | maps__insert(&kernel_maps, map); |
| 1162 | } |
Mike Galbraith | 6cfcc53 | 2009-07-02 08:08:36 +0200 | [diff] [blame] | 1163 | |
Arnaldo Carvalho de Melo | c338aee | 2009-11-20 20:51:27 -0200 | [diff] [blame] | 1164 | struct symbol *kernel_maps__find_symbol(u64 ip, struct map **mapp, |
| 1165 | symbol_filter_t filter) |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1166 | { |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1167 | struct map *map = maps__find(&kernel_maps, ip); |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1168 | |
| 1169 | if (mapp) |
| 1170 | *mapp = map; |
| 1171 | |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 1172 | if (map) { |
| 1173 | ip = map->map_ip(map, ip); |
Arnaldo Carvalho de Melo | c338aee | 2009-11-20 20:51:27 -0200 | [diff] [blame] | 1174 | return map__find_symbol(map, ip, filter); |
Arnaldo Carvalho de Melo | b32d133 | 2009-11-24 12:05:15 -0200 | [diff] [blame^] | 1175 | } else |
| 1176 | WARN_ONCE(RB_EMPTY_ROOT(&kernel_maps), |
| 1177 | "Empty kernel_maps, was symbol__init() called?\n"); |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 1178 | |
| 1179 | return NULL; |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1180 | } |
| 1181 | |
| 1182 | struct map *kernel_maps__find_by_dso_name(const char *name) |
| 1183 | { |
| 1184 | struct rb_node *nd; |
| 1185 | |
| 1186 | for (nd = rb_first(&kernel_maps); nd; nd = rb_next(nd)) { |
| 1187 | struct map *map = rb_entry(nd, struct map, rb_node); |
| 1188 | |
| 1189 | if (map->dso && strcmp(map->dso->name, name) == 0) |
| 1190 | return map; |
| 1191 | } |
| 1192 | |
| 1193 | return NULL; |
| 1194 | } |
| 1195 | |
Arnaldo Carvalho de Melo | c338aee | 2009-11-20 20:51:27 -0200 | [diff] [blame] | 1196 | static int dsos__set_modules_path_dir(char *dirname) |
Mike Galbraith | 6cfcc53 | 2009-07-02 08:08:36 +0200 | [diff] [blame] | 1197 | { |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1198 | struct dirent *dent; |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1199 | DIR *dir = opendir(dirname); |
Mike Galbraith | 6cfcc53 | 2009-07-02 08:08:36 +0200 | [diff] [blame] | 1200 | |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1201 | if (!dir) { |
Arnaldo Carvalho de Melo | 87f8ea4 | 2009-11-22 13:21:41 -0200 | [diff] [blame] | 1202 | pr_debug("%s: cannot open %s dir\n", __func__, dirname); |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1203 | return -1; |
Mike Galbraith | 6cfcc53 | 2009-07-02 08:08:36 +0200 | [diff] [blame] | 1204 | } |
| 1205 | |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1206 | while ((dent = readdir(dir)) != NULL) { |
| 1207 | char path[PATH_MAX]; |
Mike Galbraith | 6cfcc53 | 2009-07-02 08:08:36 +0200 | [diff] [blame] | 1208 | |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1209 | if (dent->d_type == DT_DIR) { |
| 1210 | if (!strcmp(dent->d_name, ".") || |
| 1211 | !strcmp(dent->d_name, "..")) |
| 1212 | continue; |
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 | snprintf(path, sizeof(path), "%s/%s", |
| 1215 | dirname, dent->d_name); |
Arnaldo Carvalho de Melo | c338aee | 2009-11-20 20:51:27 -0200 | [diff] [blame] | 1216 | if (dsos__set_modules_path_dir(path) < 0) |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1217 | goto failure; |
| 1218 | } else { |
| 1219 | char *dot = strrchr(dent->d_name, '.'), |
| 1220 | dso_name[PATH_MAX]; |
| 1221 | struct map *map; |
Arnaldo Carvalho de Melo | cfc10d3 | 2009-11-17 15:40:53 -0200 | [diff] [blame] | 1222 | char *long_name; |
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 | if (dot == NULL || strcmp(dot, ".ko")) |
| 1225 | continue; |
| 1226 | snprintf(dso_name, sizeof(dso_name), "[%.*s]", |
| 1227 | (int)(dot - dent->d_name), dent->d_name); |
Mike Galbraith | 6cfcc53 | 2009-07-02 08:08:36 +0200 | [diff] [blame] | 1228 | |
Arnaldo Carvalho de Melo | a2a99e8 | 2009-10-05 14:26:18 -0300 | [diff] [blame] | 1229 | strxfrchar(dso_name, '-', '_'); |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1230 | map = kernel_maps__find_by_dso_name(dso_name); |
| 1231 | if (map == NULL) |
| 1232 | continue; |
Mike Galbraith | 6cfcc53 | 2009-07-02 08:08:36 +0200 | [diff] [blame] | 1233 | |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1234 | snprintf(path, sizeof(path), "%s/%s", |
| 1235 | dirname, dent->d_name); |
Mike Galbraith | 6cfcc53 | 2009-07-02 08:08:36 +0200 | [diff] [blame] | 1236 | |
Arnaldo Carvalho de Melo | cfc10d3 | 2009-11-17 15:40:53 -0200 | [diff] [blame] | 1237 | long_name = strdup(path); |
| 1238 | if (long_name == NULL) |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1239 | goto failure; |
Arnaldo Carvalho de Melo | cfc10d3 | 2009-11-17 15:40:53 -0200 | [diff] [blame] | 1240 | dso__set_long_name(map->dso, long_name); |
Mike Galbraith | 6cfcc53 | 2009-07-02 08:08:36 +0200 | [diff] [blame] | 1241 | } |
Mike Galbraith | 6cfcc53 | 2009-07-02 08:08:36 +0200 | [diff] [blame] | 1242 | } |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1243 | |
Arnaldo Carvalho de Melo | c338aee | 2009-11-20 20:51:27 -0200 | [diff] [blame] | 1244 | return 0; |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1245 | failure: |
| 1246 | closedir(dir); |
| 1247 | return -1; |
Mike Galbraith | 6cfcc53 | 2009-07-02 08:08:36 +0200 | [diff] [blame] | 1248 | } |
| 1249 | |
Arnaldo Carvalho de Melo | c338aee | 2009-11-20 20:51:27 -0200 | [diff] [blame] | 1250 | static int dsos__set_modules_path(void) |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1251 | { |
| 1252 | struct utsname uts; |
| 1253 | char modules_path[PATH_MAX]; |
| 1254 | |
| 1255 | if (uname(&uts) < 0) |
| 1256 | return -1; |
| 1257 | |
| 1258 | snprintf(modules_path, sizeof(modules_path), "/lib/modules/%s/kernel", |
| 1259 | uts.release); |
| 1260 | |
Arnaldo Carvalho de Melo | c338aee | 2009-11-20 20:51:27 -0200 | [diff] [blame] | 1261 | return dsos__set_modules_path_dir(modules_path); |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1262 | } |
| 1263 | |
| 1264 | /* |
| 1265 | * Constructor variant for modules (where we know from /proc/modules where |
| 1266 | * they are loaded) and for vmlinux, where only after we load all the |
| 1267 | * symbols we'll know where it starts and ends. |
| 1268 | */ |
| 1269 | static struct map *map__new2(u64 start, struct dso *dso) |
| 1270 | { |
| 1271 | struct map *self = malloc(sizeof(*self)); |
| 1272 | |
| 1273 | if (self != NULL) { |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1274 | /* |
Arnaldo Carvalho de Melo | afb7b4f | 2009-10-30 16:28:23 -0200 | [diff] [blame] | 1275 | * ->end will be filled after we load all the symbols |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1276 | */ |
Arnaldo Carvalho de Melo | afb7b4f | 2009-10-30 16:28:23 -0200 | [diff] [blame] | 1277 | map__init(self, start, 0, 0, dso); |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1278 | } |
Arnaldo Carvalho de Melo | afb7b4f | 2009-10-30 16:28:23 -0200 | [diff] [blame] | 1279 | |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1280 | return self; |
| 1281 | } |
| 1282 | |
Arnaldo Carvalho de Melo | c338aee | 2009-11-20 20:51:27 -0200 | [diff] [blame] | 1283 | static int kernel_maps__create_module_maps(void) |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1284 | { |
| 1285 | char *line = NULL; |
| 1286 | size_t n; |
| 1287 | FILE *file = fopen("/proc/modules", "r"); |
| 1288 | struct map *map; |
| 1289 | |
| 1290 | if (file == NULL) |
| 1291 | return -1; |
| 1292 | |
| 1293 | while (!feof(file)) { |
| 1294 | char name[PATH_MAX]; |
| 1295 | u64 start; |
| 1296 | struct dso *dso; |
| 1297 | char *sep; |
| 1298 | int line_len; |
| 1299 | |
| 1300 | line_len = getline(&line, &n, file); |
| 1301 | if (line_len < 0) |
| 1302 | break; |
| 1303 | |
| 1304 | if (!line) |
| 1305 | goto out_failure; |
| 1306 | |
| 1307 | line[--line_len] = '\0'; /* \n */ |
| 1308 | |
| 1309 | sep = strrchr(line, 'x'); |
| 1310 | if (sep == NULL) |
| 1311 | continue; |
| 1312 | |
| 1313 | hex2u64(sep + 1, &start); |
| 1314 | |
| 1315 | sep = strchr(line, ' '); |
| 1316 | if (sep == NULL) |
| 1317 | continue; |
| 1318 | |
| 1319 | *sep = '\0'; |
| 1320 | |
| 1321 | snprintf(name, sizeof(name), "[%s]", line); |
Arnaldo Carvalho de Melo | 00a192b | 2009-10-30 16:28:24 -0200 | [diff] [blame] | 1322 | dso = dso__new(name); |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1323 | |
| 1324 | if (dso == NULL) |
| 1325 | goto out_delete_line; |
| 1326 | |
| 1327 | map = map__new2(start, dso); |
| 1328 | if (map == NULL) { |
| 1329 | dso__delete(dso); |
| 1330 | goto out_delete_line; |
| 1331 | } |
| 1332 | |
Arnaldo Carvalho de Melo | f1617b4 | 2009-11-18 20:20:52 -0200 | [diff] [blame] | 1333 | snprintf(name, sizeof(name), |
| 1334 | "/sys/module/%s/notes/.note.gnu.build-id", line); |
| 1335 | if (sysfs__read_build_id(name, dso->build_id, |
| 1336 | sizeof(dso->build_id)) == 0) |
| 1337 | dso->has_build_id = true; |
| 1338 | |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1339 | dso->origin = DSO__ORIG_KMODULE; |
| 1340 | kernel_maps__insert(map); |
| 1341 | dsos__add(dso); |
| 1342 | } |
| 1343 | |
| 1344 | free(line); |
| 1345 | fclose(file); |
| 1346 | |
Arnaldo Carvalho de Melo | c338aee | 2009-11-20 20:51:27 -0200 | [diff] [blame] | 1347 | return dsos__set_modules_path(); |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1348 | |
| 1349 | out_delete_line: |
| 1350 | free(line); |
| 1351 | out_failure: |
| 1352 | return -1; |
| 1353 | } |
| 1354 | |
| 1355 | 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] | 1356 | const char *vmlinux, symbol_filter_t filter) |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 1357 | { |
Arnaldo Carvalho de Melo | fbd733b | 2009-11-20 20:51:28 -0200 | [diff] [blame] | 1358 | int err = -1, fd; |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 1359 | |
Arnaldo Carvalho de Melo | fbd733b | 2009-11-20 20:51:28 -0200 | [diff] [blame] | 1360 | if (self->has_build_id) { |
| 1361 | u8 build_id[BUILD_ID_SIZE]; |
Arnaldo Carvalho de Melo | 66bd842 | 2009-10-28 21:51:21 -0200 | [diff] [blame] | 1362 | |
Arnaldo Carvalho de Melo | fbd733b | 2009-11-20 20:51:28 -0200 | [diff] [blame] | 1363 | if (filename__read_build_id(vmlinux, build_id, |
| 1364 | sizeof(build_id)) < 0) { |
| 1365 | pr_debug("No build_id in %s, ignoring it\n", vmlinux); |
| 1366 | return -1; |
| 1367 | } |
| 1368 | if (!dso__build_id_equal(self, build_id)) { |
| 1369 | char expected_build_id[BUILD_ID_SIZE * 2 + 1], |
| 1370 | vmlinux_build_id[BUILD_ID_SIZE * 2 + 1]; |
| 1371 | |
| 1372 | build_id__sprintf(self->build_id, |
| 1373 | sizeof(self->build_id), |
| 1374 | expected_build_id); |
| 1375 | build_id__sprintf(build_id, sizeof(build_id), |
| 1376 | vmlinux_build_id); |
| 1377 | pr_debug("build_id in %s is %s while expected is %s, " |
| 1378 | "ignoring it\n", vmlinux, vmlinux_build_id, |
| 1379 | expected_build_id); |
| 1380 | return -1; |
| 1381 | } |
| 1382 | } |
| 1383 | |
| 1384 | fd = open(vmlinux, O_RDONLY); |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 1385 | if (fd < 0) |
| 1386 | return -1; |
| 1387 | |
Arnaldo Carvalho de Melo | fbd733b | 2009-11-20 20:51:28 -0200 | [diff] [blame] | 1388 | self->loaded = 1; |
Arnaldo Carvalho de Melo | 6beba7a | 2009-10-21 17:34:06 -0200 | [diff] [blame] | 1389 | 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] | 1390 | |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 1391 | close(fd); |
| 1392 | |
| 1393 | return err; |
| 1394 | } |
| 1395 | |
Arnaldo Carvalho de Melo | c338aee | 2009-11-20 20:51:27 -0200 | [diff] [blame] | 1396 | static int dso__load_kernel_sym(struct dso *self, struct map *map, |
| 1397 | symbol_filter_t filter) |
Arnaldo Carvalho de Melo | a827c87 | 2009-05-28 14:55:19 -0300 | [diff] [blame] | 1398 | { |
Arnaldo Carvalho de Melo | cc612d8 | 2009-11-23 16:39:10 -0200 | [diff] [blame] | 1399 | int err; |
| 1400 | bool is_kallsyms; |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1401 | |
Arnaldo Carvalho de Melo | cc612d8 | 2009-11-23 16:39:10 -0200 | [diff] [blame] | 1402 | if (vmlinux_path != NULL) { |
| 1403 | int i; |
| 1404 | pr_debug("Looking at the vmlinux_path (%d entries long)\n", |
| 1405 | vmlinux_path__nr_entries); |
| 1406 | for (i = 0; i < vmlinux_path__nr_entries; ++i) { |
| 1407 | err = dso__load_vmlinux(self, map, vmlinux_path[i], |
| 1408 | filter); |
| 1409 | if (err > 0) { |
| 1410 | pr_debug("Using %s for symbols\n", |
| 1411 | vmlinux_path[i]); |
| 1412 | dso__set_long_name(self, |
| 1413 | strdup(vmlinux_path[i])); |
| 1414 | goto out_fixup; |
| 1415 | } |
| 1416 | } |
| 1417 | } |
| 1418 | |
| 1419 | is_kallsyms = self->long_name[0] == '['; |
| 1420 | if (is_kallsyms) |
| 1421 | goto do_kallsyms; |
| 1422 | |
| 1423 | err = dso__load_vmlinux(self, map, self->long_name, filter); |
Arnaldo Carvalho de Melo | ef6ae72 | 2009-11-20 20:51:29 -0200 | [diff] [blame] | 1424 | if (err <= 0) { |
Arnaldo Carvalho de Melo | cc612d8 | 2009-11-23 16:39:10 -0200 | [diff] [blame] | 1425 | pr_info("The file %s cannot be used, " |
| 1426 | "trying to use /proc/kallsyms...", self->long_name); |
| 1427 | sleep(2); |
| 1428 | do_kallsyms: |
Arnaldo Carvalho de Melo | c338aee | 2009-11-20 20:51:27 -0200 | [diff] [blame] | 1429 | err = kernel_maps__load_kallsyms(filter); |
Arnaldo Carvalho de Melo | cc612d8 | 2009-11-23 16:39:10 -0200 | [diff] [blame] | 1430 | if (err > 0 && !is_kallsyms) |
Arnaldo Carvalho de Melo | ef6ae72 | 2009-11-20 20:51:29 -0200 | [diff] [blame] | 1431 | dso__set_long_name(self, strdup("[kernel.kallsyms]")); |
| 1432 | } |
Arnaldo Carvalho de Melo | a827c87 | 2009-05-28 14:55:19 -0300 | [diff] [blame] | 1433 | |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1434 | if (err > 0) { |
Arnaldo Carvalho de Melo | cc612d8 | 2009-11-23 16:39:10 -0200 | [diff] [blame] | 1435 | out_fixup: |
Arnaldo Carvalho de Melo | c338aee | 2009-11-20 20:51:27 -0200 | [diff] [blame] | 1436 | map__fixup_start(map); |
| 1437 | map__fixup_end(map); |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1438 | } |
Arnaldo Carvalho de Melo | 94cb9e3 | 2009-08-06 14:43:17 -0300 | [diff] [blame] | 1439 | |
Arnaldo Carvalho de Melo | a827c87 | 2009-05-28 14:55:19 -0300 | [diff] [blame] | 1440 | return err; |
| 1441 | } |
| 1442 | |
Frederic Weisbecker | cd84c2a | 2009-08-12 10:03:49 +0200 | [diff] [blame] | 1443 | LIST_HEAD(dsos); |
Arnaldo Carvalho de Melo | cc612d8 | 2009-11-23 16:39:10 -0200 | [diff] [blame] | 1444 | struct dso *vdso; |
Frederic Weisbecker | cd84c2a | 2009-08-12 10:03:49 +0200 | [diff] [blame] | 1445 | |
| 1446 | static void dsos__add(struct dso *dso) |
| 1447 | { |
| 1448 | list_add_tail(&dso->node, &dsos); |
| 1449 | } |
| 1450 | |
| 1451 | static struct dso *dsos__find(const char *name) |
| 1452 | { |
| 1453 | struct dso *pos; |
| 1454 | |
| 1455 | list_for_each_entry(pos, &dsos, node) |
| 1456 | if (strcmp(pos->name, name) == 0) |
| 1457 | return pos; |
| 1458 | return NULL; |
| 1459 | } |
| 1460 | |
Arnaldo Carvalho de Melo | 00a192b | 2009-10-30 16:28:24 -0200 | [diff] [blame] | 1461 | struct dso *dsos__findnew(const char *name) |
Frederic Weisbecker | cd84c2a | 2009-08-12 10:03:49 +0200 | [diff] [blame] | 1462 | { |
| 1463 | struct dso *dso = dsos__find(name); |
Frederic Weisbecker | cd84c2a | 2009-08-12 10:03:49 +0200 | [diff] [blame] | 1464 | |
Arnaldo Carvalho de Melo | e420499 | 2009-10-20 14:25:40 -0200 | [diff] [blame] | 1465 | if (!dso) { |
Arnaldo Carvalho de Melo | 00a192b | 2009-10-30 16:28:24 -0200 | [diff] [blame] | 1466 | dso = dso__new(name); |
Arnaldo Carvalho de Melo | cfc10d3 | 2009-11-17 15:40:53 -0200 | [diff] [blame] | 1467 | if (dso != NULL) { |
Arnaldo Carvalho de Melo | e420499 | 2009-10-20 14:25:40 -0200 | [diff] [blame] | 1468 | dsos__add(dso); |
Arnaldo Carvalho de Melo | cfc10d3 | 2009-11-17 15:40:53 -0200 | [diff] [blame] | 1469 | dso__set_basename(dso); |
| 1470 | } |
Arnaldo Carvalho de Melo | 66bd842 | 2009-10-28 21:51:21 -0200 | [diff] [blame] | 1471 | } |
Frederic Weisbecker | cd84c2a | 2009-08-12 10:03:49 +0200 | [diff] [blame] | 1472 | |
| 1473 | return dso; |
Frederic Weisbecker | cd84c2a | 2009-08-12 10:03:49 +0200 | [diff] [blame] | 1474 | } |
| 1475 | |
| 1476 | void dsos__fprintf(FILE *fp) |
| 1477 | { |
| 1478 | struct dso *pos; |
| 1479 | |
| 1480 | list_for_each_entry(pos, &dsos, node) |
| 1481 | dso__fprintf(pos, fp); |
| 1482 | } |
| 1483 | |
Arnaldo Carvalho de Melo | 9e03eb2 | 2009-11-16 16:32:44 -0200 | [diff] [blame] | 1484 | size_t dsos__fprintf_buildid(FILE *fp) |
| 1485 | { |
| 1486 | struct dso *pos; |
| 1487 | size_t ret = 0; |
| 1488 | |
| 1489 | list_for_each_entry(pos, &dsos, node) { |
| 1490 | ret += dso__fprintf_buildid(pos, fp); |
Arnaldo Carvalho de Melo | 1124ba7 | 2009-11-16 21:45:25 -0200 | [diff] [blame] | 1491 | ret += fprintf(fp, " %s\n", pos->long_name); |
Arnaldo Carvalho de Melo | 9e03eb2 | 2009-11-16 16:32:44 -0200 | [diff] [blame] | 1492 | } |
| 1493 | return ret; |
| 1494 | } |
| 1495 | |
Arnaldo Carvalho de Melo | b32d133 | 2009-11-24 12:05:15 -0200 | [diff] [blame^] | 1496 | static int kernel_maps__create_kernel_map(const struct symbol_conf *conf) |
Frederic Weisbecker | cd84c2a | 2009-08-12 10:03:49 +0200 | [diff] [blame] | 1497 | { |
Arnaldo Carvalho de Melo | b32d133 | 2009-11-24 12:05:15 -0200 | [diff] [blame^] | 1498 | struct dso *kernel = dso__new(conf->vmlinux_name ?: "[kernel.kallsyms]"); |
Frederic Weisbecker | cd84c2a | 2009-08-12 10:03:49 +0200 | [diff] [blame] | 1499 | |
Arnaldo Carvalho de Melo | 2446042 | 2009-11-18 20:20:53 -0200 | [diff] [blame] | 1500 | if (kernel == NULL) |
Arnaldo Carvalho de Melo | c338aee | 2009-11-20 20:51:27 -0200 | [diff] [blame] | 1501 | return -1; |
| 1502 | |
| 1503 | kernel_map = map__new2(0, kernel); |
| 1504 | if (kernel_map == NULL) |
| 1505 | goto out_delete_kernel_dso; |
| 1506 | |
Arnaldo Carvalho de Melo | cc612d8 | 2009-11-23 16:39:10 -0200 | [diff] [blame] | 1507 | kernel_map->map_ip = kernel_map->unmap_ip = identity__map_ip; |
| 1508 | kernel->short_name = "[kernel]"; |
| 1509 | kernel->kernel = 1; |
Arnaldo Carvalho de Melo | 2446042 | 2009-11-18 20:20:53 -0200 | [diff] [blame] | 1510 | |
Arnaldo Carvalho de Melo | 00a192b | 2009-10-30 16:28:24 -0200 | [diff] [blame] | 1511 | vdso = dso__new("[vdso]"); |
Arnaldo Carvalho de Melo | c338aee | 2009-11-20 20:51:27 -0200 | [diff] [blame] | 1512 | if (vdso == NULL) |
| 1513 | goto out_delete_kernel_map; |
Frederic Weisbecker | cd84c2a | 2009-08-12 10:03:49 +0200 | [diff] [blame] | 1514 | |
Arnaldo Carvalho de Melo | 2446042 | 2009-11-18 20:20:53 -0200 | [diff] [blame] | 1515 | if (sysfs__read_build_id("/sys/kernel/notes", kernel->build_id, |
| 1516 | sizeof(kernel->build_id)) == 0) |
| 1517 | kernel->has_build_id = true; |
| 1518 | |
Arnaldo Carvalho de Melo | c338aee | 2009-11-20 20:51:27 -0200 | [diff] [blame] | 1519 | kernel_maps__insert(kernel_map); |
Arnaldo Carvalho de Melo | 2446042 | 2009-11-18 20:20:53 -0200 | [diff] [blame] | 1520 | dsos__add(kernel); |
Frederic Weisbecker | cd84c2a | 2009-08-12 10:03:49 +0200 | [diff] [blame] | 1521 | dsos__add(vdso); |
| 1522 | |
Arnaldo Carvalho de Melo | c338aee | 2009-11-20 20:51:27 -0200 | [diff] [blame] | 1523 | return 0; |
| 1524 | |
| 1525 | out_delete_kernel_map: |
| 1526 | map__delete(kernel_map); |
| 1527 | kernel_map = NULL; |
| 1528 | out_delete_kernel_dso: |
| 1529 | dso__delete(kernel); |
| 1530 | return -1; |
Arnaldo Carvalho de Melo | 2446042 | 2009-11-18 20:20:53 -0200 | [diff] [blame] | 1531 | } |
| 1532 | |
Arnaldo Carvalho de Melo | cc612d8 | 2009-11-23 16:39:10 -0200 | [diff] [blame] | 1533 | static void vmlinux_path__exit(void) |
Arnaldo Carvalho de Melo | 2446042 | 2009-11-18 20:20:53 -0200 | [diff] [blame] | 1534 | { |
Arnaldo Carvalho de Melo | cc612d8 | 2009-11-23 16:39:10 -0200 | [diff] [blame] | 1535 | while (--vmlinux_path__nr_entries >= 0) { |
| 1536 | free(vmlinux_path[vmlinux_path__nr_entries]); |
| 1537 | vmlinux_path[vmlinux_path__nr_entries] = NULL; |
| 1538 | } |
| 1539 | |
| 1540 | free(vmlinux_path); |
| 1541 | vmlinux_path = NULL; |
| 1542 | } |
| 1543 | |
| 1544 | static int vmlinux_path__init(void) |
| 1545 | { |
| 1546 | struct utsname uts; |
| 1547 | char bf[PATH_MAX]; |
| 1548 | |
| 1549 | if (uname(&uts) < 0) |
Arnaldo Carvalho de Melo | 2446042 | 2009-11-18 20:20:53 -0200 | [diff] [blame] | 1550 | return -1; |
| 1551 | |
Arnaldo Carvalho de Melo | cc612d8 | 2009-11-23 16:39:10 -0200 | [diff] [blame] | 1552 | vmlinux_path = malloc(sizeof(char *) * 5); |
| 1553 | if (vmlinux_path == NULL) |
| 1554 | return -1; |
| 1555 | |
| 1556 | vmlinux_path[vmlinux_path__nr_entries] = strdup("vmlinux"); |
| 1557 | if (vmlinux_path[vmlinux_path__nr_entries] == NULL) |
| 1558 | goto out_fail; |
| 1559 | ++vmlinux_path__nr_entries; |
| 1560 | vmlinux_path[vmlinux_path__nr_entries] = strdup("/boot/vmlinux"); |
| 1561 | if (vmlinux_path[vmlinux_path__nr_entries] == NULL) |
| 1562 | goto out_fail; |
| 1563 | ++vmlinux_path__nr_entries; |
| 1564 | snprintf(bf, sizeof(bf), "/boot/vmlinux-%s", uts.release); |
| 1565 | vmlinux_path[vmlinux_path__nr_entries] = strdup(bf); |
| 1566 | if (vmlinux_path[vmlinux_path__nr_entries] == NULL) |
| 1567 | goto out_fail; |
| 1568 | ++vmlinux_path__nr_entries; |
| 1569 | snprintf(bf, sizeof(bf), "/lib/modules/%s/build/vmlinux", uts.release); |
| 1570 | vmlinux_path[vmlinux_path__nr_entries] = strdup(bf); |
| 1571 | if (vmlinux_path[vmlinux_path__nr_entries] == NULL) |
| 1572 | goto out_fail; |
| 1573 | ++vmlinux_path__nr_entries; |
| 1574 | snprintf(bf, sizeof(bf), "/usr/lib/debug/lib/modules/%s/vmlinux", |
| 1575 | uts.release); |
| 1576 | vmlinux_path[vmlinux_path__nr_entries] = strdup(bf); |
| 1577 | if (vmlinux_path[vmlinux_path__nr_entries] == NULL) |
| 1578 | goto out_fail; |
| 1579 | ++vmlinux_path__nr_entries; |
| 1580 | |
| 1581 | return 0; |
| 1582 | |
| 1583 | out_fail: |
| 1584 | vmlinux_path__exit(); |
| 1585 | return -1; |
| 1586 | } |
| 1587 | |
Arnaldo Carvalho de Melo | b32d133 | 2009-11-24 12:05:15 -0200 | [diff] [blame^] | 1588 | static int kernel_maps__init(const struct symbol_conf *conf) |
Arnaldo Carvalho de Melo | cc612d8 | 2009-11-23 16:39:10 -0200 | [diff] [blame] | 1589 | { |
Arnaldo Carvalho de Melo | b32d133 | 2009-11-24 12:05:15 -0200 | [diff] [blame^] | 1590 | const struct symbol_conf *pconf = conf ?: &symbol_conf__defaults; |
| 1591 | |
| 1592 | symbol__priv_size = pconf->priv_size; |
| 1593 | |
| 1594 | if (pconf->try_vmlinux_path && vmlinux_path__init() < 0) |
Arnaldo Carvalho de Melo | cc612d8 | 2009-11-23 16:39:10 -0200 | [diff] [blame] | 1595 | return -1; |
| 1596 | |
Arnaldo Carvalho de Melo | b32d133 | 2009-11-24 12:05:15 -0200 | [diff] [blame^] | 1597 | if (kernel_maps__create_kernel_map(pconf) < 0) { |
Arnaldo Carvalho de Melo | cc612d8 | 2009-11-23 16:39:10 -0200 | [diff] [blame] | 1598 | vmlinux_path__exit(); |
| 1599 | return -1; |
| 1600 | } |
| 1601 | |
Arnaldo Carvalho de Melo | b32d133 | 2009-11-24 12:05:15 -0200 | [diff] [blame^] | 1602 | if (pconf->use_modules && kernel_maps__create_module_maps() < 0) |
Arnaldo Carvalho de Melo | 87f8ea4 | 2009-11-22 13:21:41 -0200 | [diff] [blame] | 1603 | pr_debug("Failed to load list of modules in use, " |
| 1604 | "continuing...\n"); |
Arnaldo Carvalho de Melo | 90c8321 | 2009-11-21 14:31:24 -0200 | [diff] [blame] | 1605 | /* |
| 1606 | * Now that we have all the maps created, just set the ->end of them: |
| 1607 | */ |
| 1608 | kernel_maps__fixup_end(); |
Arnaldo Carvalho de Melo | 6671cb1 | 2009-11-20 20:51:24 -0200 | [diff] [blame] | 1609 | return 0; |
Frederic Weisbecker | cd84c2a | 2009-08-12 10:03:49 +0200 | [diff] [blame] | 1610 | } |
| 1611 | |
Arnaldo Carvalho de Melo | b32d133 | 2009-11-24 12:05:15 -0200 | [diff] [blame^] | 1612 | int symbol__init(struct symbol_conf *conf) |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 1613 | { |
| 1614 | elf_version(EV_CURRENT); |
Arnaldo Carvalho de Melo | b32d133 | 2009-11-24 12:05:15 -0200 | [diff] [blame^] | 1615 | return kernel_maps__init(conf); |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 1616 | } |