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 | 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 | b0da954 | 2009-11-27 16:29:14 -0200 | [diff] [blame] | 31 | static void dsos__add(struct list_head *head, struct dso *dso); |
Arnaldo Carvalho de Melo | 9958e1f | 2009-12-11 14:50:36 -0200 | [diff] [blame] | 32 | static struct map *map_groups__find_by_name(struct map_groups *self, char *name); |
Arnaldo Carvalho de Melo | 3610583 | 2009-11-27 16:29:16 -0200 | [diff] [blame] | 33 | static struct map *map__new2(u64 start, struct dso *dso, enum map_type type); |
Arnaldo Carvalho de Melo | 6a4694a | 2009-11-27 16:29:17 -0200 | [diff] [blame] | 34 | struct symbol *dso__find_symbol(struct dso *self, enum map_type type, u64 addr); |
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, |
Arnaldo Carvalho de Melo | 9958e1f | 2009-12-11 14:50:36 -0200 | [diff] [blame] | 36 | struct map_groups *mg, 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 | 9958e1f | 2009-12-11 14:50:36 -0200 | [diff] [blame] | 46 | static struct map_groups kmaps_mem; |
| 47 | struct map_groups *kmaps = &kmaps_mem; |
Arnaldo Carvalho de Melo | af427bf | 2009-10-05 14:26:17 -0300 | [diff] [blame] | 48 | |
Arnaldo Carvalho de Melo | 3610583 | 2009-11-27 16:29:16 -0200 | [diff] [blame] | 49 | bool dso__loaded(const struct dso *self, enum map_type type) |
| 50 | { |
| 51 | return self->loaded & (1 << type); |
| 52 | } |
| 53 | |
| 54 | static void dso__set_loaded(struct dso *self, enum map_type type) |
| 55 | { |
| 56 | self->loaded |= (1 << type); |
| 57 | } |
| 58 | |
Arnaldo Carvalho de Melo | 6893d4e | 2009-12-11 14:50:37 -0200 | [diff] [blame^] | 59 | static bool symbol_type__is_a(char symbol_type, enum map_type map_type) |
| 60 | { |
| 61 | switch (map_type) { |
| 62 | case MAP__FUNCTION: |
| 63 | return symbol_type == 'T' || symbol_type == 'W'; |
| 64 | default: |
| 65 | return false; |
| 66 | } |
| 67 | } |
| 68 | |
Arnaldo Carvalho de Melo | fcf1203 | 2009-11-24 13:01:52 -0200 | [diff] [blame] | 69 | static void symbols__fixup_end(struct rb_root *self) |
Arnaldo Carvalho de Melo | af427bf | 2009-10-05 14:26:17 -0300 | [diff] [blame] | 70 | { |
Arnaldo Carvalho de Melo | fcf1203 | 2009-11-24 13:01:52 -0200 | [diff] [blame] | 71 | struct rb_node *nd, *prevnd = rb_first(self); |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 72 | struct symbol *curr, *prev; |
Arnaldo Carvalho de Melo | af427bf | 2009-10-05 14:26:17 -0300 | [diff] [blame] | 73 | |
| 74 | if (prevnd == NULL) |
| 75 | return; |
| 76 | |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 77 | curr = rb_entry(prevnd, struct symbol, rb_node); |
| 78 | |
Arnaldo Carvalho de Melo | af427bf | 2009-10-05 14:26:17 -0300 | [diff] [blame] | 79 | for (nd = rb_next(prevnd); nd; nd = rb_next(nd)) { |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 80 | prev = curr; |
| 81 | curr = rb_entry(nd, struct symbol, rb_node); |
Arnaldo Carvalho de Melo | af427bf | 2009-10-05 14:26:17 -0300 | [diff] [blame] | 82 | |
| 83 | if (prev->end == prev->start) |
| 84 | prev->end = curr->start - 1; |
Arnaldo Carvalho de Melo | af427bf | 2009-10-05 14:26:17 -0300 | [diff] [blame] | 85 | } |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 86 | |
| 87 | /* Last entry */ |
| 88 | if (curr->end == curr->start) |
| 89 | curr->end = roundup(curr->start, 4096); |
Arnaldo Carvalho de Melo | af427bf | 2009-10-05 14:26:17 -0300 | [diff] [blame] | 90 | } |
| 91 | |
Arnaldo Carvalho de Melo | 9958e1f | 2009-12-11 14:50:36 -0200 | [diff] [blame] | 92 | static void __map_groups__fixup_end(struct map_groups *self, enum map_type type) |
Arnaldo Carvalho de Melo | af427bf | 2009-10-05 14:26:17 -0300 | [diff] [blame] | 93 | { |
| 94 | struct map *prev, *curr; |
Arnaldo Carvalho de Melo | 95011c6 | 2009-11-27 16:29:20 -0200 | [diff] [blame] | 95 | struct rb_node *nd, *prevnd = rb_first(&self->maps[type]); |
Arnaldo Carvalho de Melo | af427bf | 2009-10-05 14:26:17 -0300 | [diff] [blame] | 96 | |
| 97 | if (prevnd == NULL) |
| 98 | return; |
| 99 | |
| 100 | curr = rb_entry(prevnd, struct map, rb_node); |
Arnaldo Carvalho de Melo | af427bf | 2009-10-05 14:26:17 -0300 | [diff] [blame] | 101 | |
| 102 | for (nd = rb_next(prevnd); nd; nd = rb_next(nd)) { |
| 103 | prev = curr; |
| 104 | curr = rb_entry(nd, struct map, rb_node); |
| 105 | prev->end = curr->start - 1; |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 106 | } |
Arnaldo Carvalho de Melo | 90c8321 | 2009-11-21 14:31:24 -0200 | [diff] [blame] | 107 | |
| 108 | /* |
| 109 | * We still haven't the actual symbols, so guess the |
| 110 | * last map final address. |
| 111 | */ |
| 112 | curr->end = ~0UL; |
Arnaldo Carvalho de Melo | af427bf | 2009-10-05 14:26:17 -0300 | [diff] [blame] | 113 | } |
| 114 | |
Arnaldo Carvalho de Melo | 9958e1f | 2009-12-11 14:50:36 -0200 | [diff] [blame] | 115 | static void map_groups__fixup_end(struct map_groups *self) |
Arnaldo Carvalho de Melo | 23ea4a3 | 2009-11-27 16:29:19 -0200 | [diff] [blame] | 116 | { |
| 117 | int i; |
| 118 | for (i = 0; i < MAP__NR_TYPES; ++i) |
Arnaldo Carvalho de Melo | 9958e1f | 2009-12-11 14:50:36 -0200 | [diff] [blame] | 119 | __map_groups__fixup_end(self, i); |
Arnaldo Carvalho de Melo | 23ea4a3 | 2009-11-27 16:29:19 -0200 | [diff] [blame] | 120 | } |
| 121 | |
Arnaldo Carvalho de Melo | 00a192b | 2009-10-30 16:28:24 -0200 | [diff] [blame] | 122 | 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] | 123 | { |
Arnaldo Carvalho de Melo | 0085c954 | 2009-05-28 14:55:13 -0300 | [diff] [blame] | 124 | size_t namelen = strlen(name) + 1; |
Arnaldo Carvalho de Melo | 3647948 | 2009-11-24 12:05:16 -0200 | [diff] [blame] | 125 | struct symbol *self = zalloc(symbol__priv_size + |
| 126 | sizeof(*self) + namelen); |
| 127 | if (self == NULL) |
Ingo Molnar | 0b73da3 | 2009-06-06 15:48:52 +0200 | [diff] [blame] | 128 | return NULL; |
| 129 | |
Arnaldo Carvalho de Melo | 3647948 | 2009-11-24 12:05:16 -0200 | [diff] [blame] | 130 | if (symbol__priv_size) |
Arnaldo Carvalho de Melo | 00a192b | 2009-10-30 16:28:24 -0200 | [diff] [blame] | 131 | self = ((void *)self) + symbol__priv_size; |
Arnaldo Carvalho de Melo | 3647948 | 2009-11-24 12:05:16 -0200 | [diff] [blame] | 132 | |
Ingo Molnar | 0b73da3 | 2009-06-06 15:48:52 +0200 | [diff] [blame] | 133 | self->start = start; |
Mike Galbraith | 6cfcc53 | 2009-07-02 08:08:36 +0200 | [diff] [blame] | 134 | self->end = len ? start + len - 1 : start; |
Arnaldo Carvalho de Melo | e420499 | 2009-10-20 14:25:40 -0200 | [diff] [blame] | 135 | |
Arnaldo Carvalho de Melo | 6beba7a | 2009-10-21 17:34:06 -0200 | [diff] [blame] | 136 | 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] | 137 | |
Ingo Molnar | 0b73da3 | 2009-06-06 15:48:52 +0200 | [diff] [blame] | 138 | memcpy(self->name, name, namelen); |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 139 | |
| 140 | return self; |
| 141 | } |
| 142 | |
Arnaldo Carvalho de Melo | 00a192b | 2009-10-30 16:28:24 -0200 | [diff] [blame] | 143 | static void symbol__delete(struct symbol *self) |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 144 | { |
Arnaldo Carvalho de Melo | 00a192b | 2009-10-30 16:28:24 -0200 | [diff] [blame] | 145 | free(((void *)self) - symbol__priv_size); |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 146 | } |
| 147 | |
| 148 | static size_t symbol__fprintf(struct symbol *self, FILE *fp) |
| 149 | { |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 150 | return fprintf(fp, " %llx-%llx %s\n", |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 151 | self->start, self->end, self->name); |
| 152 | } |
| 153 | |
Arnaldo Carvalho de Melo | cfc10d3 | 2009-11-17 15:40:53 -0200 | [diff] [blame] | 154 | static void dso__set_long_name(struct dso *self, char *name) |
| 155 | { |
Arnaldo Carvalho de Melo | ef6ae72 | 2009-11-20 20:51:29 -0200 | [diff] [blame] | 156 | if (name == NULL) |
| 157 | return; |
Arnaldo Carvalho de Melo | cfc10d3 | 2009-11-17 15:40:53 -0200 | [diff] [blame] | 158 | self->long_name = name; |
| 159 | self->long_name_len = strlen(name); |
| 160 | } |
| 161 | |
| 162 | static void dso__set_basename(struct dso *self) |
| 163 | { |
| 164 | self->short_name = basename(self->long_name); |
| 165 | } |
| 166 | |
Arnaldo Carvalho de Melo | 00a192b | 2009-10-30 16:28:24 -0200 | [diff] [blame] | 167 | struct dso *dso__new(const char *name) |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 168 | { |
| 169 | struct dso *self = malloc(sizeof(*self) + strlen(name) + 1); |
| 170 | |
| 171 | if (self != NULL) { |
Arnaldo Carvalho de Melo | 6a4694a | 2009-11-27 16:29:17 -0200 | [diff] [blame] | 172 | int i; |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 173 | strcpy(self->name, name); |
Arnaldo Carvalho de Melo | cfc10d3 | 2009-11-17 15:40:53 -0200 | [diff] [blame] | 174 | dso__set_long_name(self, self->name); |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 175 | self->short_name = self->name; |
Arnaldo Carvalho de Melo | 6a4694a | 2009-11-27 16:29:17 -0200 | [diff] [blame] | 176 | for (i = 0; i < MAP__NR_TYPES; ++i) |
| 177 | self->symbols[i] = RB_ROOT; |
| 178 | self->find_symbol = dso__find_symbol; |
Arnaldo Carvalho de Melo | 52d422d | 2009-07-10 22:47:28 -0300 | [diff] [blame] | 179 | self->slen_calculated = 0; |
Arnaldo Carvalho de Melo | 94cb9e3 | 2009-08-06 14:43:17 -0300 | [diff] [blame] | 180 | self->origin = DSO__ORIG_NOT_FOUND; |
Arnaldo Carvalho de Melo | 8d06367 | 2009-11-04 18:50:43 -0200 | [diff] [blame] | 181 | self->loaded = 0; |
| 182 | self->has_build_id = 0; |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 183 | } |
| 184 | |
| 185 | return self; |
| 186 | } |
| 187 | |
Arnaldo Carvalho de Melo | fcf1203 | 2009-11-24 13:01:52 -0200 | [diff] [blame] | 188 | static void symbols__delete(struct rb_root *self) |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 189 | { |
| 190 | struct symbol *pos; |
Arnaldo Carvalho de Melo | fcf1203 | 2009-11-24 13:01:52 -0200 | [diff] [blame] | 191 | struct rb_node *next = rb_first(self); |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 192 | |
| 193 | while (next) { |
| 194 | pos = rb_entry(next, struct symbol, rb_node); |
| 195 | next = rb_next(&pos->rb_node); |
Arnaldo Carvalho de Melo | fcf1203 | 2009-11-24 13:01:52 -0200 | [diff] [blame] | 196 | rb_erase(&pos->rb_node, self); |
Arnaldo Carvalho de Melo | 00a192b | 2009-10-30 16:28:24 -0200 | [diff] [blame] | 197 | symbol__delete(pos); |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 198 | } |
| 199 | } |
| 200 | |
| 201 | void dso__delete(struct dso *self) |
| 202 | { |
Arnaldo Carvalho de Melo | 6a4694a | 2009-11-27 16:29:17 -0200 | [diff] [blame] | 203 | int i; |
| 204 | for (i = 0; i < MAP__NR_TYPES; ++i) |
| 205 | symbols__delete(&self->symbols[i]); |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 206 | if (self->long_name != self->name) |
| 207 | free(self->long_name); |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 208 | free(self); |
| 209 | } |
| 210 | |
Arnaldo Carvalho de Melo | 8d06367 | 2009-11-04 18:50:43 -0200 | [diff] [blame] | 211 | void dso__set_build_id(struct dso *self, void *build_id) |
| 212 | { |
| 213 | memcpy(self->build_id, build_id, sizeof(self->build_id)); |
| 214 | self->has_build_id = 1; |
| 215 | } |
| 216 | |
Arnaldo Carvalho de Melo | fcf1203 | 2009-11-24 13:01:52 -0200 | [diff] [blame] | 217 | static void symbols__insert(struct rb_root *self, struct symbol *sym) |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 218 | { |
Arnaldo Carvalho de Melo | fcf1203 | 2009-11-24 13:01:52 -0200 | [diff] [blame] | 219 | struct rb_node **p = &self->rb_node; |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 220 | struct rb_node *parent = NULL; |
Paul Mackerras | 9cffa8d | 2009-06-19 22:21:42 +1000 | [diff] [blame] | 221 | const u64 ip = sym->start; |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 222 | struct symbol *s; |
| 223 | |
| 224 | while (*p != NULL) { |
| 225 | parent = *p; |
| 226 | s = rb_entry(parent, struct symbol, rb_node); |
| 227 | if (ip < s->start) |
| 228 | p = &(*p)->rb_left; |
| 229 | else |
| 230 | p = &(*p)->rb_right; |
| 231 | } |
| 232 | rb_link_node(&sym->rb_node, parent, p); |
Arnaldo Carvalho de Melo | fcf1203 | 2009-11-24 13:01:52 -0200 | [diff] [blame] | 233 | rb_insert_color(&sym->rb_node, self); |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 234 | } |
| 235 | |
Arnaldo Carvalho de Melo | fcf1203 | 2009-11-24 13:01:52 -0200 | [diff] [blame] | 236 | static struct symbol *symbols__find(struct rb_root *self, u64 ip) |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 237 | { |
| 238 | struct rb_node *n; |
| 239 | |
| 240 | if (self == NULL) |
| 241 | return NULL; |
| 242 | |
Arnaldo Carvalho de Melo | fcf1203 | 2009-11-24 13:01:52 -0200 | [diff] [blame] | 243 | n = self->rb_node; |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 244 | |
| 245 | while (n) { |
| 246 | struct symbol *s = rb_entry(n, struct symbol, rb_node); |
| 247 | |
| 248 | if (ip < s->start) |
| 249 | n = n->rb_left; |
| 250 | else if (ip > s->end) |
| 251 | n = n->rb_right; |
| 252 | else |
| 253 | return s; |
| 254 | } |
| 255 | |
| 256 | return NULL; |
| 257 | } |
| 258 | |
Arnaldo Carvalho de Melo | 6a4694a | 2009-11-27 16:29:17 -0200 | [diff] [blame] | 259 | struct symbol *dso__find_symbol(struct dso *self, enum map_type type, u64 addr) |
Arnaldo Carvalho de Melo | fcf1203 | 2009-11-24 13:01:52 -0200 | [diff] [blame] | 260 | { |
Arnaldo Carvalho de Melo | 6a4694a | 2009-11-27 16:29:17 -0200 | [diff] [blame] | 261 | return symbols__find(&self->symbols[type], addr); |
Arnaldo Carvalho de Melo | fcf1203 | 2009-11-24 13:01:52 -0200 | [diff] [blame] | 262 | } |
| 263 | |
Arnaldo Carvalho de Melo | 8d06367 | 2009-11-04 18:50:43 -0200 | [diff] [blame] | 264 | int build_id__sprintf(u8 *self, int len, char *bf) |
| 265 | { |
| 266 | char *bid = bf; |
| 267 | u8 *raw = self; |
| 268 | int i; |
| 269 | |
| 270 | for (i = 0; i < len; ++i) { |
| 271 | sprintf(bid, "%02x", *raw); |
| 272 | ++raw; |
| 273 | bid += 2; |
| 274 | } |
| 275 | |
| 276 | return raw - self; |
| 277 | } |
| 278 | |
Arnaldo Carvalho de Melo | 9e03eb2 | 2009-11-16 16:32:44 -0200 | [diff] [blame] | 279 | size_t dso__fprintf_buildid(struct dso *self, FILE *fp) |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 280 | { |
Arnaldo Carvalho de Melo | 8d06367 | 2009-11-04 18:50:43 -0200 | [diff] [blame] | 281 | char sbuild_id[BUILD_ID_SIZE * 2 + 1]; |
Arnaldo Carvalho de Melo | 8d06367 | 2009-11-04 18:50:43 -0200 | [diff] [blame] | 282 | |
| 283 | 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] | 284 | return fprintf(fp, "%s", sbuild_id); |
| 285 | } |
| 286 | |
Arnaldo Carvalho de Melo | 95011c6 | 2009-11-27 16:29:20 -0200 | [diff] [blame] | 287 | size_t dso__fprintf(struct dso *self, enum map_type type, FILE *fp) |
Arnaldo Carvalho de Melo | 9e03eb2 | 2009-11-16 16:32:44 -0200 | [diff] [blame] | 288 | { |
| 289 | struct rb_node *nd; |
| 290 | size_t ret = fprintf(fp, "dso: %s (", self->short_name); |
| 291 | |
| 292 | ret += dso__fprintf_buildid(self, fp); |
Arnaldo Carvalho de Melo | 6a4694a | 2009-11-27 16:29:17 -0200 | [diff] [blame] | 293 | ret += fprintf(fp, ")\n"); |
Arnaldo Carvalho de Melo | 95011c6 | 2009-11-27 16:29:20 -0200 | [diff] [blame] | 294 | for (nd = rb_first(&self->symbols[type]); nd; nd = rb_next(nd)) { |
| 295 | struct symbol *pos = rb_entry(nd, struct symbol, rb_node); |
| 296 | ret += symbol__fprintf(pos, fp); |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 297 | } |
| 298 | |
| 299 | return ret; |
| 300 | } |
| 301 | |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 302 | /* |
| 303 | * Loads the function entries in /proc/kallsyms into kernel_map->dso, |
| 304 | * so that we can in the next step set the symbol ->end address and then |
| 305 | * call kernel_maps__split_kallsyms. |
| 306 | */ |
Arnaldo Carvalho de Melo | 4e06255 | 2009-11-27 16:29:18 -0200 | [diff] [blame] | 307 | static int dso__load_all_kallsyms(struct dso *self, struct map *map) |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 308 | { |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 309 | char *line = NULL; |
| 310 | size_t n; |
Arnaldo Carvalho de Melo | 4e06255 | 2009-11-27 16:29:18 -0200 | [diff] [blame] | 311 | struct rb_root *root = &self->symbols[map->type]; |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 312 | FILE *file = fopen("/proc/kallsyms", "r"); |
| 313 | |
| 314 | if (file == NULL) |
| 315 | goto out_failure; |
| 316 | |
| 317 | while (!feof(file)) { |
Paul Mackerras | 9cffa8d | 2009-06-19 22:21:42 +1000 | [diff] [blame] | 318 | u64 start; |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 319 | struct symbol *sym; |
| 320 | int line_len, len; |
| 321 | char symbol_type; |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 322 | char *symbol_name; |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 323 | |
| 324 | line_len = getline(&line, &n, file); |
| 325 | if (line_len < 0) |
| 326 | break; |
| 327 | |
| 328 | if (!line) |
| 329 | goto out_failure; |
| 330 | |
| 331 | line[--line_len] = '\0'; /* \n */ |
| 332 | |
Arnaldo Carvalho de Melo | a0055ae | 2009-06-01 17:50:19 -0300 | [diff] [blame] | 333 | len = hex2u64(line, &start); |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 334 | |
| 335 | len++; |
| 336 | if (len + 2 >= line_len) |
| 337 | continue; |
| 338 | |
| 339 | symbol_type = toupper(line[len]); |
Arnaldo Carvalho de Melo | 6893d4e | 2009-12-11 14:50:37 -0200 | [diff] [blame^] | 340 | if (!symbol_type__is_a(symbol_type, map->type)) |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 341 | continue; |
Arnaldo Carvalho de Melo | af427bf | 2009-10-05 14:26:17 -0300 | [diff] [blame] | 342 | |
| 343 | symbol_name = line + len + 2; |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 344 | /* |
| 345 | * Will fix up the end later, when we have all symbols sorted. |
| 346 | */ |
Arnaldo Carvalho de Melo | 00a192b | 2009-10-30 16:28:24 -0200 | [diff] [blame] | 347 | sym = symbol__new(start, 0, symbol_name); |
Arnaldo Carvalho de Melo | af427bf | 2009-10-05 14:26:17 -0300 | [diff] [blame] | 348 | |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 349 | if (sym == NULL) |
| 350 | goto out_delete_line; |
Arnaldo Carvalho de Melo | 8216416 | 2009-11-16 13:48:11 -0200 | [diff] [blame] | 351 | /* |
| 352 | * We will pass the symbols to the filter later, in |
Arnaldo Carvalho de Melo | 4e06255 | 2009-11-27 16:29:18 -0200 | [diff] [blame] | 353 | * map__split_kallsyms, when we have split the maps per module |
Arnaldo Carvalho de Melo | 8216416 | 2009-11-16 13:48:11 -0200 | [diff] [blame] | 354 | */ |
Arnaldo Carvalho de Melo | 4e06255 | 2009-11-27 16:29:18 -0200 | [diff] [blame] | 355 | symbols__insert(root, sym); |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 356 | } |
| 357 | |
| 358 | free(line); |
| 359 | fclose(file); |
| 360 | |
| 361 | return 0; |
| 362 | |
| 363 | out_delete_line: |
| 364 | free(line); |
| 365 | out_failure: |
| 366 | return -1; |
| 367 | } |
| 368 | |
| 369 | /* |
| 370 | * Split the symbols into maps, making sure there are no overlaps, i.e. the |
| 371 | * kernel range is broken in several maps, named [kernel].N, as we don't have |
| 372 | * the original ELF section names vmlinux have. |
| 373 | */ |
Arnaldo Carvalho de Melo | 9958e1f | 2009-12-11 14:50:36 -0200 | [diff] [blame] | 374 | static int dso__split_kallsyms(struct dso *self, struct map *map, |
| 375 | struct map_groups *mg, symbol_filter_t filter) |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 376 | { |
Arnaldo Carvalho de Melo | 4e06255 | 2009-11-27 16:29:18 -0200 | [diff] [blame] | 377 | struct map *curr_map = map; |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 378 | struct symbol *pos; |
| 379 | int count = 0; |
Arnaldo Carvalho de Melo | 4e06255 | 2009-11-27 16:29:18 -0200 | [diff] [blame] | 380 | struct rb_root *root = &self->symbols[map->type]; |
| 381 | struct rb_node *next = rb_first(root); |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 382 | int kernel_range = 0; |
| 383 | |
| 384 | while (next) { |
| 385 | char *module; |
| 386 | |
| 387 | pos = rb_entry(next, struct symbol, rb_node); |
| 388 | next = rb_next(&pos->rb_node); |
| 389 | |
| 390 | module = strchr(pos->name, '\t'); |
| 391 | if (module) { |
Arnaldo Carvalho de Melo | 9958e1f | 2009-12-11 14:50:36 -0200 | [diff] [blame] | 392 | if (!mg->use_modules) |
Arnaldo Carvalho de Melo | 1de8e24 | 2009-11-27 16:29:21 -0200 | [diff] [blame] | 393 | goto discard_symbol; |
| 394 | |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 395 | *module++ = '\0'; |
| 396 | |
Arnaldo Carvalho de Melo | 4e06255 | 2009-11-27 16:29:18 -0200 | [diff] [blame] | 397 | if (strcmp(self->name, module)) { |
Arnaldo Carvalho de Melo | 9958e1f | 2009-12-11 14:50:36 -0200 | [diff] [blame] | 398 | curr_map = map_groups__find_by_name(mg, module); |
Arnaldo Carvalho de Melo | 4e06255 | 2009-11-27 16:29:18 -0200 | [diff] [blame] | 399 | if (curr_map == NULL) { |
Arnaldo Carvalho de Melo | 95011c6 | 2009-11-27 16:29:20 -0200 | [diff] [blame] | 400 | pr_debug("/proc/{kallsyms,modules} " |
| 401 | "inconsistency!\n"); |
Arnaldo Carvalho de Melo | af427bf | 2009-10-05 14:26:17 -0300 | [diff] [blame] | 402 | return -1; |
| 403 | } |
| 404 | } |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 405 | /* |
| 406 | * So that we look just like we get from .ko files, |
| 407 | * i.e. not prelinked, relative to map->start. |
| 408 | */ |
Arnaldo Carvalho de Melo | 4e06255 | 2009-11-27 16:29:18 -0200 | [diff] [blame] | 409 | pos->start = curr_map->map_ip(curr_map, pos->start); |
| 410 | pos->end = curr_map->map_ip(curr_map, pos->end); |
| 411 | } else if (curr_map != map) { |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 412 | char dso_name[PATH_MAX]; |
| 413 | struct dso *dso; |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 414 | |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 415 | snprintf(dso_name, sizeof(dso_name), "[kernel].%d", |
| 416 | kernel_range++); |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 417 | |
Arnaldo Carvalho de Melo | 00a192b | 2009-10-30 16:28:24 -0200 | [diff] [blame] | 418 | dso = dso__new(dso_name); |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 419 | if (dso == NULL) |
| 420 | return -1; |
| 421 | |
Arnaldo Carvalho de Melo | 4e06255 | 2009-11-27 16:29:18 -0200 | [diff] [blame] | 422 | curr_map = map__new2(pos->start, dso, map->type); |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 423 | if (map == NULL) { |
| 424 | dso__delete(dso); |
| 425 | return -1; |
| 426 | } |
| 427 | |
Arnaldo Carvalho de Melo | 4e06255 | 2009-11-27 16:29:18 -0200 | [diff] [blame] | 428 | curr_map->map_ip = curr_map->unmap_ip = identity__map_ip; |
Arnaldo Carvalho de Melo | 9958e1f | 2009-12-11 14:50:36 -0200 | [diff] [blame] | 429 | map_groups__insert(mg, curr_map); |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 430 | ++kernel_range; |
| 431 | } |
| 432 | |
Arnaldo Carvalho de Melo | 4e06255 | 2009-11-27 16:29:18 -0200 | [diff] [blame] | 433 | if (filter && filter(curr_map, pos)) { |
Arnaldo Carvalho de Melo | 1de8e24 | 2009-11-27 16:29:21 -0200 | [diff] [blame] | 434 | discard_symbol: rb_erase(&pos->rb_node, root); |
Arnaldo Carvalho de Melo | 00a192b | 2009-10-30 16:28:24 -0200 | [diff] [blame] | 435 | symbol__delete(pos); |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 436 | } else { |
Arnaldo Carvalho de Melo | 4e06255 | 2009-11-27 16:29:18 -0200 | [diff] [blame] | 437 | if (curr_map != map) { |
| 438 | rb_erase(&pos->rb_node, root); |
| 439 | symbols__insert(&curr_map->dso->symbols[curr_map->type], pos); |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 440 | } |
Mike Galbraith | 9974f49 | 2009-07-02 08:05:58 +0200 | [diff] [blame] | 441 | count++; |
| 442 | } |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 443 | } |
| 444 | |
Mike Galbraith | 9974f49 | 2009-07-02 08:05:58 +0200 | [diff] [blame] | 445 | return count; |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 446 | } |
| 447 | |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 448 | |
Arnaldo Carvalho de Melo | 4e06255 | 2009-11-27 16:29:18 -0200 | [diff] [blame] | 449 | static int dso__load_kallsyms(struct dso *self, struct map *map, |
Arnaldo Carvalho de Melo | 9958e1f | 2009-12-11 14:50:36 -0200 | [diff] [blame] | 450 | struct map_groups *mg, symbol_filter_t filter) |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 451 | { |
Arnaldo Carvalho de Melo | 4e06255 | 2009-11-27 16:29:18 -0200 | [diff] [blame] | 452 | if (dso__load_all_kallsyms(self, map) < 0) |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 453 | return -1; |
| 454 | |
Arnaldo Carvalho de Melo | 4e06255 | 2009-11-27 16:29:18 -0200 | [diff] [blame] | 455 | symbols__fixup_end(&self->symbols[map->type]); |
| 456 | self->origin = DSO__ORIG_KERNEL; |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 457 | |
Arnaldo Carvalho de Melo | 9958e1f | 2009-12-11 14:50:36 -0200 | [diff] [blame] | 458 | return dso__split_kallsyms(self, map, mg, filter); |
Arnaldo Carvalho de Melo | 23ea4a3 | 2009-11-27 16:29:19 -0200 | [diff] [blame] | 459 | } |
| 460 | |
| 461 | size_t kernel_maps__fprintf(FILE *fp) |
| 462 | { |
| 463 | size_t printed = fprintf(fp, "Kernel maps:\n"); |
Arnaldo Carvalho de Melo | 9958e1f | 2009-12-11 14:50:36 -0200 | [diff] [blame] | 464 | printed += map_groups__fprintf_maps(kmaps, fp); |
Arnaldo Carvalho de Melo | 6beba7a | 2009-10-21 17:34:06 -0200 | [diff] [blame] | 465 | return printed + fprintf(fp, "END kernel maps\n"); |
Arnaldo Carvalho de Melo | af427bf | 2009-10-05 14:26:17 -0300 | [diff] [blame] | 466 | } |
| 467 | |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 468 | 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] | 469 | symbol_filter_t filter) |
Pekka Enberg | 80d496b | 2009-06-08 21:12:48 +0300 | [diff] [blame] | 470 | { |
| 471 | char *line = NULL; |
| 472 | size_t n; |
| 473 | FILE *file; |
| 474 | int nr_syms = 0; |
| 475 | |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 476 | file = fopen(self->long_name, "r"); |
Pekka Enberg | 80d496b | 2009-06-08 21:12:48 +0300 | [diff] [blame] | 477 | if (file == NULL) |
| 478 | goto out_failure; |
| 479 | |
| 480 | while (!feof(file)) { |
Paul Mackerras | 9cffa8d | 2009-06-19 22:21:42 +1000 | [diff] [blame] | 481 | u64 start, size; |
Pekka Enberg | 80d496b | 2009-06-08 21:12:48 +0300 | [diff] [blame] | 482 | struct symbol *sym; |
| 483 | int line_len, len; |
| 484 | |
| 485 | line_len = getline(&line, &n, file); |
| 486 | if (line_len < 0) |
| 487 | break; |
| 488 | |
| 489 | if (!line) |
| 490 | goto out_failure; |
| 491 | |
| 492 | line[--line_len] = '\0'; /* \n */ |
| 493 | |
| 494 | len = hex2u64(line, &start); |
| 495 | |
| 496 | len++; |
| 497 | if (len + 2 >= line_len) |
| 498 | continue; |
| 499 | |
| 500 | len += hex2u64(line + len, &size); |
| 501 | |
| 502 | len++; |
| 503 | if (len + 2 >= line_len) |
| 504 | continue; |
| 505 | |
Arnaldo Carvalho de Melo | 00a192b | 2009-10-30 16:28:24 -0200 | [diff] [blame] | 506 | sym = symbol__new(start, size, line + len); |
Pekka Enberg | 80d496b | 2009-06-08 21:12:48 +0300 | [diff] [blame] | 507 | |
| 508 | if (sym == NULL) |
| 509 | goto out_delete_line; |
| 510 | |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 511 | if (filter && filter(map, sym)) |
Arnaldo Carvalho de Melo | 00a192b | 2009-10-30 16:28:24 -0200 | [diff] [blame] | 512 | symbol__delete(sym); |
Pekka Enberg | 80d496b | 2009-06-08 21:12:48 +0300 | [diff] [blame] | 513 | else { |
Arnaldo Carvalho de Melo | 6a4694a | 2009-11-27 16:29:17 -0200 | [diff] [blame] | 514 | symbols__insert(&self->symbols[map->type], sym); |
Pekka Enberg | 80d496b | 2009-06-08 21:12:48 +0300 | [diff] [blame] | 515 | nr_syms++; |
| 516 | } |
| 517 | } |
| 518 | |
| 519 | free(line); |
| 520 | fclose(file); |
| 521 | |
| 522 | return nr_syms; |
| 523 | |
| 524 | out_delete_line: |
| 525 | free(line); |
| 526 | out_failure: |
| 527 | return -1; |
| 528 | } |
| 529 | |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 530 | /** |
| 531 | * elf_symtab__for_each_symbol - iterate thru all the symbols |
| 532 | * |
| 533 | * @self: struct elf_symtab instance to iterate |
Ingo Molnar | 83a0944 | 2009-08-15 12:26:57 +0200 | [diff] [blame] | 534 | * @idx: uint32_t idx |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 535 | * @sym: GElf_Sym iterator |
| 536 | */ |
Ingo Molnar | 83a0944 | 2009-08-15 12:26:57 +0200 | [diff] [blame] | 537 | #define elf_symtab__for_each_symbol(syms, nr_syms, idx, sym) \ |
| 538 | for (idx = 0, gelf_getsym(syms, idx, &sym);\ |
| 539 | idx < nr_syms; \ |
| 540 | idx++, gelf_getsym(syms, idx, &sym)) |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 541 | |
| 542 | static inline uint8_t elf_sym__type(const GElf_Sym *sym) |
| 543 | { |
| 544 | return GELF_ST_TYPE(sym->st_info); |
| 545 | } |
| 546 | |
| 547 | static inline int elf_sym__is_function(const GElf_Sym *sym) |
| 548 | { |
| 549 | return elf_sym__type(sym) == STT_FUNC && |
| 550 | sym->st_name != 0 && |
Arnaldo Carvalho de Melo | 8183313 | 2009-10-05 23:35:03 -0300 | [diff] [blame] | 551 | sym->st_shndx != SHN_UNDEF; |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 552 | } |
| 553 | |
Mike Galbraith | 6cfcc53 | 2009-07-02 08:08:36 +0200 | [diff] [blame] | 554 | static inline int elf_sym__is_label(const GElf_Sym *sym) |
| 555 | { |
| 556 | return elf_sym__type(sym) == STT_NOTYPE && |
| 557 | sym->st_name != 0 && |
| 558 | sym->st_shndx != SHN_UNDEF && |
| 559 | sym->st_shndx != SHN_ABS; |
| 560 | } |
| 561 | |
| 562 | static inline const char *elf_sec__name(const GElf_Shdr *shdr, |
| 563 | const Elf_Data *secstrs) |
| 564 | { |
| 565 | return secstrs->d_buf + shdr->sh_name; |
| 566 | } |
| 567 | |
| 568 | static inline int elf_sec__is_text(const GElf_Shdr *shdr, |
| 569 | const Elf_Data *secstrs) |
| 570 | { |
| 571 | return strstr(elf_sec__name(shdr, secstrs), "text") != NULL; |
| 572 | } |
| 573 | |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 574 | static inline const char *elf_sym__name(const GElf_Sym *sym, |
| 575 | const Elf_Data *symstrs) |
| 576 | { |
| 577 | return symstrs->d_buf + sym->st_name; |
| 578 | } |
| 579 | |
| 580 | static Elf_Scn *elf_section_by_name(Elf *elf, GElf_Ehdr *ep, |
| 581 | GElf_Shdr *shp, const char *name, |
Ingo Molnar | 83a0944 | 2009-08-15 12:26:57 +0200 | [diff] [blame] | 582 | size_t *idx) |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 583 | { |
| 584 | Elf_Scn *sec = NULL; |
| 585 | size_t cnt = 1; |
| 586 | |
| 587 | while ((sec = elf_nextscn(elf, sec)) != NULL) { |
| 588 | char *str; |
| 589 | |
| 590 | gelf_getshdr(sec, shp); |
| 591 | str = elf_strptr(elf, ep->e_shstrndx, shp->sh_name); |
| 592 | if (!strcmp(name, str)) { |
Ingo Molnar | 83a0944 | 2009-08-15 12:26:57 +0200 | [diff] [blame] | 593 | if (idx) |
| 594 | *idx = cnt; |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 595 | break; |
| 596 | } |
| 597 | ++cnt; |
| 598 | } |
| 599 | |
| 600 | return sec; |
| 601 | } |
| 602 | |
Arnaldo Carvalho de Melo | 8ce998d | 2009-06-03 00:54:33 -0300 | [diff] [blame] | 603 | #define elf_section__for_each_rel(reldata, pos, pos_mem, idx, nr_entries) \ |
| 604 | for (idx = 0, pos = gelf_getrel(reldata, 0, &pos_mem); \ |
| 605 | idx < nr_entries; \ |
| 606 | ++idx, pos = gelf_getrel(reldata, idx, &pos_mem)) |
| 607 | |
| 608 | #define elf_section__for_each_rela(reldata, pos, pos_mem, idx, nr_entries) \ |
| 609 | for (idx = 0, pos = gelf_getrela(reldata, 0, &pos_mem); \ |
| 610 | idx < nr_entries; \ |
| 611 | ++idx, pos = gelf_getrela(reldata, idx, &pos_mem)) |
| 612 | |
Arnaldo Carvalho de Melo | a25e46c | 2009-07-11 12:18:36 -0300 | [diff] [blame] | 613 | /* |
| 614 | * We need to check if we have a .dynsym, so that we can handle the |
| 615 | * .plt, synthesizing its symbols, that aren't on the symtabs (be it |
| 616 | * .dynsym or .symtab). |
| 617 | * And always look at the original dso, not at debuginfo packages, that |
| 618 | * have the PLT data stripped out (shdr_rel_plt.sh_type == SHT_NOBITS). |
| 619 | */ |
Arnaldo Carvalho de Melo | 8216416 | 2009-11-16 13:48:11 -0200 | [diff] [blame] | 620 | static int dso__synthesize_plt_symbols(struct dso *self, struct map *map, |
| 621 | symbol_filter_t filter) |
Arnaldo Carvalho de Melo | 8ce998d | 2009-06-03 00:54:33 -0300 | [diff] [blame] | 622 | { |
| 623 | uint32_t nr_rel_entries, idx; |
| 624 | GElf_Sym sym; |
Paul Mackerras | 9cffa8d | 2009-06-19 22:21:42 +1000 | [diff] [blame] | 625 | u64 plt_offset; |
Arnaldo Carvalho de Melo | 8ce998d | 2009-06-03 00:54:33 -0300 | [diff] [blame] | 626 | GElf_Shdr shdr_plt; |
| 627 | struct symbol *f; |
Arnaldo Carvalho de Melo | a25e46c | 2009-07-11 12:18:36 -0300 | [diff] [blame] | 628 | GElf_Shdr shdr_rel_plt, shdr_dynsym; |
Arnaldo Carvalho de Melo | 8ce998d | 2009-06-03 00:54:33 -0300 | [diff] [blame] | 629 | Elf_Data *reldata, *syms, *symstrs; |
Arnaldo Carvalho de Melo | a25e46c | 2009-07-11 12:18:36 -0300 | [diff] [blame] | 630 | Elf_Scn *scn_plt_rel, *scn_symstrs, *scn_dynsym; |
| 631 | size_t dynsym_idx; |
| 632 | GElf_Ehdr ehdr; |
Arnaldo Carvalho de Melo | 8ce998d | 2009-06-03 00:54:33 -0300 | [diff] [blame] | 633 | char sympltname[1024]; |
Arnaldo Carvalho de Melo | a25e46c | 2009-07-11 12:18:36 -0300 | [diff] [blame] | 634 | Elf *elf; |
| 635 | int nr = 0, symidx, fd, err = 0; |
Arnaldo Carvalho de Melo | 8ce998d | 2009-06-03 00:54:33 -0300 | [diff] [blame] | 636 | |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 637 | fd = open(self->long_name, O_RDONLY); |
Arnaldo Carvalho de Melo | a25e46c | 2009-07-11 12:18:36 -0300 | [diff] [blame] | 638 | if (fd < 0) |
| 639 | goto out; |
| 640 | |
Marti Raudsepp | 8408712 | 2009-10-24 19:10:36 +0300 | [diff] [blame] | 641 | elf = elf_begin(fd, PERF_ELF_C_READ_MMAP, NULL); |
Arnaldo Carvalho de Melo | a25e46c | 2009-07-11 12:18:36 -0300 | [diff] [blame] | 642 | if (elf == NULL) |
| 643 | goto out_close; |
| 644 | |
| 645 | if (gelf_getehdr(elf, &ehdr) == NULL) |
| 646 | goto out_elf_end; |
| 647 | |
| 648 | scn_dynsym = elf_section_by_name(elf, &ehdr, &shdr_dynsym, |
| 649 | ".dynsym", &dynsym_idx); |
| 650 | if (scn_dynsym == NULL) |
| 651 | goto out_elf_end; |
| 652 | |
| 653 | 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] | 654 | ".rela.plt", NULL); |
| 655 | if (scn_plt_rel == NULL) { |
Arnaldo Carvalho de Melo | a25e46c | 2009-07-11 12:18:36 -0300 | [diff] [blame] | 656 | 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] | 657 | ".rel.plt", NULL); |
| 658 | if (scn_plt_rel == 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 | |
Arnaldo Carvalho de Melo | a25e46c | 2009-07-11 12:18:36 -0300 | [diff] [blame] | 662 | err = -1; |
Arnaldo Carvalho de Melo | 8ce998d | 2009-06-03 00:54:33 -0300 | [diff] [blame] | 663 | |
Arnaldo Carvalho de Melo | a25e46c | 2009-07-11 12:18:36 -0300 | [diff] [blame] | 664 | if (shdr_rel_plt.sh_link != dynsym_idx) |
| 665 | goto out_elf_end; |
| 666 | |
| 667 | if (elf_section_by_name(elf, &ehdr, &shdr_plt, ".plt", NULL) == NULL) |
| 668 | goto out_elf_end; |
Arnaldo Carvalho de Melo | 8ce998d | 2009-06-03 00:54:33 -0300 | [diff] [blame] | 669 | |
| 670 | /* |
Ingo Molnar | 83a0944 | 2009-08-15 12:26:57 +0200 | [diff] [blame] | 671 | * 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] | 672 | * and the symbols in the .dynsym they refer to. |
| 673 | */ |
| 674 | reldata = elf_getdata(scn_plt_rel, NULL); |
| 675 | if (reldata == NULL) |
Arnaldo Carvalho de Melo | a25e46c | 2009-07-11 12:18:36 -0300 | [diff] [blame] | 676 | goto out_elf_end; |
Arnaldo Carvalho de Melo | 8ce998d | 2009-06-03 00:54:33 -0300 | [diff] [blame] | 677 | |
| 678 | syms = elf_getdata(scn_dynsym, NULL); |
| 679 | if (syms == NULL) |
Arnaldo Carvalho de Melo | a25e46c | 2009-07-11 12:18:36 -0300 | [diff] [blame] | 680 | goto out_elf_end; |
Arnaldo Carvalho de Melo | 8ce998d | 2009-06-03 00:54:33 -0300 | [diff] [blame] | 681 | |
Arnaldo Carvalho de Melo | a25e46c | 2009-07-11 12:18:36 -0300 | [diff] [blame] | 682 | scn_symstrs = elf_getscn(elf, shdr_dynsym.sh_link); |
Arnaldo Carvalho de Melo | 8ce998d | 2009-06-03 00:54:33 -0300 | [diff] [blame] | 683 | if (scn_symstrs == NULL) |
Arnaldo Carvalho de Melo | a25e46c | 2009-07-11 12:18:36 -0300 | [diff] [blame] | 684 | goto out_elf_end; |
Arnaldo Carvalho de Melo | 8ce998d | 2009-06-03 00:54:33 -0300 | [diff] [blame] | 685 | |
| 686 | symstrs = elf_getdata(scn_symstrs, NULL); |
| 687 | if (symstrs == NULL) |
Arnaldo Carvalho de Melo | a25e46c | 2009-07-11 12:18:36 -0300 | [diff] [blame] | 688 | goto out_elf_end; |
Arnaldo Carvalho de Melo | 8ce998d | 2009-06-03 00:54:33 -0300 | [diff] [blame] | 689 | |
| 690 | nr_rel_entries = shdr_rel_plt.sh_size / shdr_rel_plt.sh_entsize; |
| 691 | plt_offset = shdr_plt.sh_offset; |
| 692 | |
| 693 | if (shdr_rel_plt.sh_type == SHT_RELA) { |
| 694 | GElf_Rela pos_mem, *pos; |
| 695 | |
| 696 | elf_section__for_each_rela(reldata, pos, pos_mem, idx, |
| 697 | nr_rel_entries) { |
| 698 | symidx = GELF_R_SYM(pos->r_info); |
| 699 | plt_offset += shdr_plt.sh_entsize; |
| 700 | gelf_getsym(syms, symidx, &sym); |
| 701 | snprintf(sympltname, sizeof(sympltname), |
| 702 | "%s@plt", elf_sym__name(&sym, symstrs)); |
| 703 | |
| 704 | f = symbol__new(plt_offset, shdr_plt.sh_entsize, |
Arnaldo Carvalho de Melo | 00a192b | 2009-10-30 16:28:24 -0200 | [diff] [blame] | 705 | sympltname); |
Arnaldo Carvalho de Melo | 8ce998d | 2009-06-03 00:54:33 -0300 | [diff] [blame] | 706 | if (!f) |
Arnaldo Carvalho de Melo | a25e46c | 2009-07-11 12:18:36 -0300 | [diff] [blame] | 707 | goto out_elf_end; |
Arnaldo Carvalho de Melo | 8ce998d | 2009-06-03 00:54:33 -0300 | [diff] [blame] | 708 | |
Arnaldo Carvalho de Melo | 8216416 | 2009-11-16 13:48:11 -0200 | [diff] [blame] | 709 | if (filter && filter(map, f)) |
| 710 | symbol__delete(f); |
| 711 | else { |
Arnaldo Carvalho de Melo | 6a4694a | 2009-11-27 16:29:17 -0200 | [diff] [blame] | 712 | symbols__insert(&self->symbols[map->type], f); |
Arnaldo Carvalho de Melo | 8216416 | 2009-11-16 13:48:11 -0200 | [diff] [blame] | 713 | ++nr; |
| 714 | } |
Arnaldo Carvalho de Melo | 8ce998d | 2009-06-03 00:54:33 -0300 | [diff] [blame] | 715 | } |
| 716 | } else if (shdr_rel_plt.sh_type == SHT_REL) { |
| 717 | GElf_Rel pos_mem, *pos; |
| 718 | elf_section__for_each_rel(reldata, pos, pos_mem, idx, |
| 719 | nr_rel_entries) { |
| 720 | symidx = GELF_R_SYM(pos->r_info); |
| 721 | plt_offset += shdr_plt.sh_entsize; |
| 722 | gelf_getsym(syms, symidx, &sym); |
| 723 | snprintf(sympltname, sizeof(sympltname), |
| 724 | "%s@plt", elf_sym__name(&sym, symstrs)); |
| 725 | |
| 726 | f = symbol__new(plt_offset, shdr_plt.sh_entsize, |
Arnaldo Carvalho de Melo | 00a192b | 2009-10-30 16:28:24 -0200 | [diff] [blame] | 727 | sympltname); |
Arnaldo Carvalho de Melo | 8ce998d | 2009-06-03 00:54:33 -0300 | [diff] [blame] | 728 | if (!f) |
Arnaldo Carvalho de Melo | a25e46c | 2009-07-11 12:18:36 -0300 | [diff] [blame] | 729 | goto out_elf_end; |
Arnaldo Carvalho de Melo | 8ce998d | 2009-06-03 00:54:33 -0300 | [diff] [blame] | 730 | |
Arnaldo Carvalho de Melo | 8216416 | 2009-11-16 13:48:11 -0200 | [diff] [blame] | 731 | if (filter && filter(map, f)) |
| 732 | symbol__delete(f); |
| 733 | else { |
Arnaldo Carvalho de Melo | 6a4694a | 2009-11-27 16:29:17 -0200 | [diff] [blame] | 734 | symbols__insert(&self->symbols[map->type], f); |
Arnaldo Carvalho de Melo | 8216416 | 2009-11-16 13:48:11 -0200 | [diff] [blame] | 735 | ++nr; |
| 736 | } |
Arnaldo Carvalho de Melo | 8ce998d | 2009-06-03 00:54:33 -0300 | [diff] [blame] | 737 | } |
Arnaldo Carvalho de Melo | 8ce998d | 2009-06-03 00:54:33 -0300 | [diff] [blame] | 738 | } |
| 739 | |
Arnaldo Carvalho de Melo | a25e46c | 2009-07-11 12:18:36 -0300 | [diff] [blame] | 740 | err = 0; |
| 741 | out_elf_end: |
| 742 | elf_end(elf); |
| 743 | out_close: |
| 744 | close(fd); |
| 745 | |
| 746 | if (err == 0) |
| 747 | return nr; |
| 748 | out: |
Arnaldo Carvalho de Melo | 6beba7a | 2009-10-21 17:34:06 -0200 | [diff] [blame] | 749 | pr_warning("%s: problems reading %s PLT info.\n", |
| 750 | __func__, self->long_name); |
Arnaldo Carvalho de Melo | a25e46c | 2009-07-11 12:18:36 -0300 | [diff] [blame] | 751 | return 0; |
Arnaldo Carvalho de Melo | 8ce998d | 2009-06-03 00:54:33 -0300 | [diff] [blame] | 752 | } |
| 753 | |
Arnaldo Carvalho de Melo | 95011c6 | 2009-11-27 16:29:20 -0200 | [diff] [blame] | 754 | static int dso__load_sym(struct dso *self, struct map *map, |
Arnaldo Carvalho de Melo | 9958e1f | 2009-12-11 14:50:36 -0200 | [diff] [blame] | 755 | struct map_groups *mg, const char *name, int fd, |
Arnaldo Carvalho de Melo | 95011c6 | 2009-11-27 16:29:20 -0200 | [diff] [blame] | 756 | symbol_filter_t filter, int kernel, int kmodule) |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 757 | { |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 758 | struct map *curr_map = map; |
| 759 | struct dso *curr_dso = self; |
| 760 | size_t dso_name_len = strlen(self->short_name); |
Mike Galbraith | 6cfcc53 | 2009-07-02 08:08:36 +0200 | [diff] [blame] | 761 | Elf_Data *symstrs, *secstrs; |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 762 | uint32_t nr_syms; |
| 763 | int err = -1; |
Ingo Molnar | 83a0944 | 2009-08-15 12:26:57 +0200 | [diff] [blame] | 764 | uint32_t idx; |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 765 | GElf_Ehdr ehdr; |
| 766 | GElf_Shdr shdr; |
| 767 | Elf_Data *syms; |
| 768 | GElf_Sym sym; |
Arnaldo Carvalho de Melo | a25e46c | 2009-07-11 12:18:36 -0300 | [diff] [blame] | 769 | Elf_Scn *sec, *sec_strndx; |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 770 | Elf *elf; |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 771 | int nr = 0; |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 772 | |
Marti Raudsepp | 8408712 | 2009-10-24 19:10:36 +0300 | [diff] [blame] | 773 | elf = elf_begin(fd, PERF_ELF_C_READ_MMAP, NULL); |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 774 | if (elf == NULL) { |
Arnaldo Carvalho de Melo | 6beba7a | 2009-10-21 17:34:06 -0200 | [diff] [blame] | 775 | 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] | 776 | goto out_close; |
| 777 | } |
| 778 | |
| 779 | if (gelf_getehdr(elf, &ehdr) == NULL) { |
Arnaldo Carvalho de Melo | 6beba7a | 2009-10-21 17:34:06 -0200 | [diff] [blame] | 780 | pr_err("%s: cannot get elf header.\n", __func__); |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 781 | goto out_elf_end; |
| 782 | } |
| 783 | |
Arnaldo Carvalho de Melo | 8ce998d | 2009-06-03 00:54:33 -0300 | [diff] [blame] | 784 | sec = elf_section_by_name(elf, &ehdr, &shdr, ".symtab", NULL); |
| 785 | if (sec == NULL) { |
Arnaldo Carvalho de Melo | a25e46c | 2009-07-11 12:18:36 -0300 | [diff] [blame] | 786 | sec = elf_section_by_name(elf, &ehdr, &shdr, ".dynsym", NULL); |
| 787 | if (sec == NULL) |
Arnaldo Carvalho de Melo | 8ce998d | 2009-06-03 00:54:33 -0300 | [diff] [blame] | 788 | goto out_elf_end; |
Arnaldo Carvalho de Melo | 8ce998d | 2009-06-03 00:54:33 -0300 | [diff] [blame] | 789 | } |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 790 | |
| 791 | syms = elf_getdata(sec, NULL); |
| 792 | if (syms == NULL) |
| 793 | goto out_elf_end; |
| 794 | |
| 795 | sec = elf_getscn(elf, shdr.sh_link); |
| 796 | if (sec == NULL) |
| 797 | goto out_elf_end; |
| 798 | |
| 799 | symstrs = elf_getdata(sec, NULL); |
| 800 | if (symstrs == NULL) |
| 801 | goto out_elf_end; |
| 802 | |
Mike Galbraith | 6cfcc53 | 2009-07-02 08:08:36 +0200 | [diff] [blame] | 803 | sec_strndx = elf_getscn(elf, ehdr.e_shstrndx); |
| 804 | if (sec_strndx == NULL) |
| 805 | goto out_elf_end; |
| 806 | |
| 807 | secstrs = elf_getdata(sec_strndx, NULL); |
Stoyan Gaydarov | 9b30a26 | 2009-07-30 05:25:29 -0500 | [diff] [blame] | 808 | if (secstrs == NULL) |
Mike Galbraith | 6cfcc53 | 2009-07-02 08:08:36 +0200 | [diff] [blame] | 809 | goto out_elf_end; |
| 810 | |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 811 | nr_syms = shdr.sh_size / shdr.sh_entsize; |
| 812 | |
Arjan van de Ven | e9fbc9d | 2009-06-06 21:22:33 +0200 | [diff] [blame] | 813 | memset(&sym, 0, sizeof(sym)); |
Mike Galbraith | d20ff6b | 2009-07-20 14:01:38 +0200 | [diff] [blame] | 814 | if (!kernel) { |
| 815 | self->adjust_symbols = (ehdr.e_type == ET_EXEC || |
Arnaldo Carvalho de Melo | 30d7a77 | 2009-07-02 21:24:14 -0300 | [diff] [blame] | 816 | elf_section_by_name(elf, &ehdr, &shdr, |
| 817 | ".gnu.prelink_undo", |
| 818 | NULL) != NULL); |
Mike Galbraith | d20ff6b | 2009-07-20 14:01:38 +0200 | [diff] [blame] | 819 | } else self->adjust_symbols = 0; |
| 820 | |
Ingo Molnar | 83a0944 | 2009-08-15 12:26:57 +0200 | [diff] [blame] | 821 | elf_symtab__for_each_symbol(syms, nr_syms, idx, sym) { |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 822 | struct symbol *f; |
Ingo Molnar | 83a0944 | 2009-08-15 12:26:57 +0200 | [diff] [blame] | 823 | const char *elf_name; |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 824 | char *demangled = NULL; |
Mike Galbraith | 6cfcc53 | 2009-07-02 08:08:36 +0200 | [diff] [blame] | 825 | int is_label = elf_sym__is_label(&sym); |
| 826 | const char *section_name; |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 827 | |
Mike Galbraith | 6cfcc53 | 2009-07-02 08:08:36 +0200 | [diff] [blame] | 828 | if (!is_label && !elf_sym__is_function(&sym)) |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 829 | continue; |
| 830 | |
| 831 | sec = elf_getscn(elf, sym.st_shndx); |
| 832 | if (!sec) |
| 833 | goto out_elf_end; |
| 834 | |
| 835 | gelf_getshdr(sec, &shdr); |
Mike Galbraith | 6cfcc53 | 2009-07-02 08:08:36 +0200 | [diff] [blame] | 836 | |
| 837 | if (is_label && !elf_sec__is_text(&shdr, secstrs)) |
| 838 | continue; |
| 839 | |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 840 | elf_name = elf_sym__name(&sym, symstrs); |
Mike Galbraith | 6cfcc53 | 2009-07-02 08:08:36 +0200 | [diff] [blame] | 841 | section_name = elf_sec__name(&shdr, secstrs); |
Ingo Molnar | 0b73da3 | 2009-06-06 15:48:52 +0200 | [diff] [blame] | 842 | |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 843 | if (kernel || kmodule) { |
| 844 | char dso_name[PATH_MAX]; |
| 845 | |
| 846 | if (strcmp(section_name, |
| 847 | curr_dso->short_name + dso_name_len) == 0) |
| 848 | goto new_symbol; |
| 849 | |
| 850 | if (strcmp(section_name, ".text") == 0) { |
| 851 | curr_map = map; |
| 852 | curr_dso = self; |
| 853 | goto new_symbol; |
| 854 | } |
| 855 | |
| 856 | snprintf(dso_name, sizeof(dso_name), |
| 857 | "%s%s", self->short_name, section_name); |
| 858 | |
Arnaldo Carvalho de Melo | 9958e1f | 2009-12-11 14:50:36 -0200 | [diff] [blame] | 859 | curr_map = map_groups__find_by_name(mg, dso_name); |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 860 | if (curr_map == NULL) { |
| 861 | u64 start = sym.st_value; |
| 862 | |
| 863 | if (kmodule) |
| 864 | start += map->start + shdr.sh_offset; |
| 865 | |
Arnaldo Carvalho de Melo | 00a192b | 2009-10-30 16:28:24 -0200 | [diff] [blame] | 866 | curr_dso = dso__new(dso_name); |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 867 | if (curr_dso == NULL) |
| 868 | goto out_elf_end; |
Arnaldo Carvalho de Melo | 3610583 | 2009-11-27 16:29:16 -0200 | [diff] [blame] | 869 | curr_map = map__new2(start, curr_dso, |
| 870 | MAP__FUNCTION); |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 871 | if (curr_map == NULL) { |
| 872 | dso__delete(curr_dso); |
| 873 | goto out_elf_end; |
| 874 | } |
Arnaldo Carvalho de Melo | ed52ce2 | 2009-10-19 17:17:57 -0200 | [diff] [blame] | 875 | curr_map->map_ip = identity__map_ip; |
| 876 | curr_map->unmap_ip = identity__map_ip; |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 877 | curr_dso->origin = DSO__ORIG_KERNEL; |
Arnaldo Carvalho de Melo | 9958e1f | 2009-12-11 14:50:36 -0200 | [diff] [blame] | 878 | map_groups__insert(kmaps, curr_map); |
Arnaldo Carvalho de Melo | b0da954 | 2009-11-27 16:29:14 -0200 | [diff] [blame] | 879 | dsos__add(&dsos__kernel, curr_dso); |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 880 | } else |
| 881 | curr_dso = curr_map->dso; |
| 882 | |
| 883 | goto new_symbol; |
Arnaldo Carvalho de Melo | af427bf | 2009-10-05 14:26:17 -0300 | [diff] [blame] | 884 | } |
| 885 | |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 886 | if (curr_dso->adjust_symbols) { |
Arnaldo Carvalho de Melo | 6beba7a | 2009-10-21 17:34:06 -0200 | [diff] [blame] | 887 | pr_debug2("adjusting symbol: st_value: %Lx sh_addr: " |
| 888 | "%Lx sh_offset: %Lx\n", (u64)sym.st_value, |
| 889 | (u64)shdr.sh_addr, (u64)shdr.sh_offset); |
Arnaldo Carvalho de Melo | f5812a7 | 2009-06-30 11:43:17 -0300 | [diff] [blame] | 890 | sym.st_value -= shdr.sh_addr - shdr.sh_offset; |
Arnaldo Carvalho de Melo | af427bf | 2009-10-05 14:26:17 -0300 | [diff] [blame] | 891 | } |
Arnaldo Carvalho de Melo | 28ac909 | 2009-07-20 14:14:12 -0300 | [diff] [blame] | 892 | /* |
| 893 | * We need to figure out if the object was created from C++ sources |
| 894 | * DWARF DW_compile_unit has this, but we don't always have access |
| 895 | * to it... |
| 896 | */ |
Ingo Molnar | 83a0944 | 2009-08-15 12:26:57 +0200 | [diff] [blame] | 897 | demangled = bfd_demangle(NULL, elf_name, DMGL_PARAMS | DMGL_ANSI); |
Arnaldo Carvalho de Melo | 28ac909 | 2009-07-20 14:14:12 -0300 | [diff] [blame] | 898 | if (demangled != NULL) |
Ingo Molnar | 83a0944 | 2009-08-15 12:26:57 +0200 | [diff] [blame] | 899 | elf_name = demangled; |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 900 | new_symbol: |
Arnaldo Carvalho de Melo | 00a192b | 2009-10-30 16:28:24 -0200 | [diff] [blame] | 901 | 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] | 902 | free(demangled); |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 903 | if (!f) |
| 904 | goto out_elf_end; |
| 905 | |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 906 | if (filter && filter(curr_map, f)) |
Arnaldo Carvalho de Melo | 00a192b | 2009-10-30 16:28:24 -0200 | [diff] [blame] | 907 | symbol__delete(f); |
Arnaldo Carvalho de Melo | 69ee69f | 2009-05-28 14:55:26 -0300 | [diff] [blame] | 908 | else { |
Arnaldo Carvalho de Melo | 6a4694a | 2009-11-27 16:29:17 -0200 | [diff] [blame] | 909 | symbols__insert(&curr_dso->symbols[curr_map->type], f); |
Arnaldo Carvalho de Melo | 69ee69f | 2009-05-28 14:55:26 -0300 | [diff] [blame] | 910 | nr++; |
| 911 | } |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 912 | } |
| 913 | |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 914 | /* |
| 915 | * For misannotated, zeroed, ASM function sizes. |
| 916 | */ |
| 917 | if (nr > 0) |
Arnaldo Carvalho de Melo | 6a4694a | 2009-11-27 16:29:17 -0200 | [diff] [blame] | 918 | symbols__fixup_end(&self->symbols[map->type]); |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 919 | err = nr; |
| 920 | out_elf_end: |
| 921 | elf_end(elf); |
| 922 | out_close: |
| 923 | return err; |
| 924 | } |
| 925 | |
Arnaldo Carvalho de Melo | 78075ca | 2009-11-20 20:51:26 -0200 | [diff] [blame] | 926 | static bool dso__build_id_equal(const struct dso *self, u8 *build_id) |
| 927 | { |
| 928 | return memcmp(self->build_id, build_id, sizeof(self->build_id)) == 0; |
| 929 | } |
| 930 | |
Arnaldo Carvalho de Melo | b0da954 | 2009-11-27 16:29:14 -0200 | [diff] [blame] | 931 | static bool __dsos__read_build_ids(struct list_head *head) |
Frederic Weisbecker | 57f395a | 2009-11-11 04:51:04 +0100 | [diff] [blame] | 932 | { |
Arnaldo Carvalho de Melo | e30a3d1 | 2009-11-18 20:20:51 -0200 | [diff] [blame] | 933 | bool have_build_id = false; |
Frederic Weisbecker | 57f395a | 2009-11-11 04:51:04 +0100 | [diff] [blame] | 934 | struct dso *pos; |
| 935 | |
Arnaldo Carvalho de Melo | b0da954 | 2009-11-27 16:29:14 -0200 | [diff] [blame] | 936 | list_for_each_entry(pos, head, node) |
Arnaldo Carvalho de Melo | e30a3d1 | 2009-11-18 20:20:51 -0200 | [diff] [blame] | 937 | if (filename__read_build_id(pos->long_name, pos->build_id, |
| 938 | sizeof(pos->build_id)) > 0) { |
| 939 | have_build_id = true; |
| 940 | pos->has_build_id = true; |
| 941 | } |
Frederic Weisbecker | 57f395a | 2009-11-11 04:51:04 +0100 | [diff] [blame] | 942 | |
Arnaldo Carvalho de Melo | e30a3d1 | 2009-11-18 20:20:51 -0200 | [diff] [blame] | 943 | return have_build_id; |
Frederic Weisbecker | 57f395a | 2009-11-11 04:51:04 +0100 | [diff] [blame] | 944 | } |
| 945 | |
Arnaldo Carvalho de Melo | b0da954 | 2009-11-27 16:29:14 -0200 | [diff] [blame] | 946 | bool dsos__read_build_ids(void) |
| 947 | { |
Arnaldo Carvalho de Melo | 8b4825b | 2009-12-09 20:09:37 -0200 | [diff] [blame] | 948 | bool kbuildids = __dsos__read_build_ids(&dsos__kernel), |
| 949 | ubuildids = __dsos__read_build_ids(&dsos__user); |
| 950 | return kbuildids || ubuildids; |
Arnaldo Carvalho de Melo | b0da954 | 2009-11-27 16:29:14 -0200 | [diff] [blame] | 951 | } |
| 952 | |
Arnaldo Carvalho de Melo | fd7a346 | 2009-11-20 20:51:25 -0200 | [diff] [blame] | 953 | /* |
| 954 | * Align offset to 4 bytes as needed for note name and descriptor data. |
| 955 | */ |
| 956 | #define NOTE_ALIGN(n) (((n) + 3) & -4U) |
| 957 | |
Arnaldo Carvalho de Melo | 2643ce1 | 2009-11-03 21:46:10 -0200 | [diff] [blame] | 958 | 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] | 959 | { |
Arnaldo Carvalho de Melo | 2643ce1 | 2009-11-03 21:46:10 -0200 | [diff] [blame] | 960 | int fd, err = -1; |
Arnaldo Carvalho de Melo | 4d1e00a | 2009-08-05 19:02:49 -0300 | [diff] [blame] | 961 | GElf_Ehdr ehdr; |
| 962 | GElf_Shdr shdr; |
Arnaldo Carvalho de Melo | fd7a346 | 2009-11-20 20:51:25 -0200 | [diff] [blame] | 963 | Elf_Data *data; |
Arnaldo Carvalho de Melo | 4d1e00a | 2009-08-05 19:02:49 -0300 | [diff] [blame] | 964 | Elf_Scn *sec; |
Pekka Enberg | e57cfcd | 2009-11-22 12:29:44 +0200 | [diff] [blame] | 965 | Elf_Kind ek; |
Arnaldo Carvalho de Melo | fd7a346 | 2009-11-20 20:51:25 -0200 | [diff] [blame] | 966 | void *ptr; |
Arnaldo Carvalho de Melo | 4d1e00a | 2009-08-05 19:02:49 -0300 | [diff] [blame] | 967 | Elf *elf; |
Arnaldo Carvalho de Melo | 4d1e00a | 2009-08-05 19:02:49 -0300 | [diff] [blame] | 968 | |
Arnaldo Carvalho de Melo | 2643ce1 | 2009-11-03 21:46:10 -0200 | [diff] [blame] | 969 | if (size < BUILD_ID_SIZE) |
| 970 | goto out; |
| 971 | |
| 972 | fd = open(filename, O_RDONLY); |
Arnaldo Carvalho de Melo | 4d1e00a | 2009-08-05 19:02:49 -0300 | [diff] [blame] | 973 | if (fd < 0) |
| 974 | goto out; |
| 975 | |
Marti Raudsepp | 8408712 | 2009-10-24 19:10:36 +0300 | [diff] [blame] | 976 | elf = elf_begin(fd, PERF_ELF_C_READ_MMAP, NULL); |
Arnaldo Carvalho de Melo | 4d1e00a | 2009-08-05 19:02:49 -0300 | [diff] [blame] | 977 | if (elf == NULL) { |
Arnaldo Carvalho de Melo | 8d06367 | 2009-11-04 18:50:43 -0200 | [diff] [blame] | 978 | 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] | 979 | goto out_close; |
| 980 | } |
| 981 | |
Pekka Enberg | e57cfcd | 2009-11-22 12:29:44 +0200 | [diff] [blame] | 982 | ek = elf_kind(elf); |
| 983 | if (ek != ELF_K_ELF) |
| 984 | goto out_elf_end; |
| 985 | |
Arnaldo Carvalho de Melo | 4d1e00a | 2009-08-05 19:02:49 -0300 | [diff] [blame] | 986 | if (gelf_getehdr(elf, &ehdr) == NULL) { |
Arnaldo Carvalho de Melo | 6beba7a | 2009-10-21 17:34:06 -0200 | [diff] [blame] | 987 | pr_err("%s: cannot get elf header.\n", __func__); |
Arnaldo Carvalho de Melo | 4d1e00a | 2009-08-05 19:02:49 -0300 | [diff] [blame] | 988 | goto out_elf_end; |
| 989 | } |
| 990 | |
Arnaldo Carvalho de Melo | 2643ce1 | 2009-11-03 21:46:10 -0200 | [diff] [blame] | 991 | sec = elf_section_by_name(elf, &ehdr, &shdr, |
| 992 | ".note.gnu.build-id", NULL); |
Arnaldo Carvalho de Melo | fd7a346 | 2009-11-20 20:51:25 -0200 | [diff] [blame] | 993 | if (sec == NULL) { |
| 994 | sec = elf_section_by_name(elf, &ehdr, &shdr, |
| 995 | ".notes", NULL); |
| 996 | if (sec == NULL) |
| 997 | goto out_elf_end; |
| 998 | } |
| 999 | |
| 1000 | data = elf_getdata(sec, NULL); |
| 1001 | if (data == NULL) |
Arnaldo Carvalho de Melo | 4d1e00a | 2009-08-05 19:02:49 -0300 | [diff] [blame] | 1002 | goto out_elf_end; |
| 1003 | |
Arnaldo Carvalho de Melo | fd7a346 | 2009-11-20 20:51:25 -0200 | [diff] [blame] | 1004 | ptr = data->d_buf; |
| 1005 | while (ptr < (data->d_buf + data->d_size)) { |
| 1006 | GElf_Nhdr *nhdr = ptr; |
| 1007 | int namesz = NOTE_ALIGN(nhdr->n_namesz), |
| 1008 | descsz = NOTE_ALIGN(nhdr->n_descsz); |
| 1009 | const char *name; |
| 1010 | |
| 1011 | ptr += sizeof(*nhdr); |
| 1012 | name = ptr; |
| 1013 | ptr += namesz; |
| 1014 | if (nhdr->n_type == NT_GNU_BUILD_ID && |
| 1015 | nhdr->n_namesz == sizeof("GNU")) { |
| 1016 | if (memcmp(name, "GNU", sizeof("GNU")) == 0) { |
| 1017 | memcpy(bf, ptr, BUILD_ID_SIZE); |
| 1018 | err = BUILD_ID_SIZE; |
| 1019 | break; |
| 1020 | } |
| 1021 | } |
| 1022 | ptr += descsz; |
| 1023 | } |
Arnaldo Carvalho de Melo | 2643ce1 | 2009-11-03 21:46:10 -0200 | [diff] [blame] | 1024 | out_elf_end: |
| 1025 | elf_end(elf); |
| 1026 | out_close: |
| 1027 | close(fd); |
| 1028 | out: |
| 1029 | return err; |
| 1030 | } |
| 1031 | |
Arnaldo Carvalho de Melo | f1617b4 | 2009-11-18 20:20:52 -0200 | [diff] [blame] | 1032 | int sysfs__read_build_id(const char *filename, void *build_id, size_t size) |
| 1033 | { |
| 1034 | int fd, err = -1; |
| 1035 | |
| 1036 | if (size < BUILD_ID_SIZE) |
| 1037 | goto out; |
| 1038 | |
| 1039 | fd = open(filename, O_RDONLY); |
| 1040 | if (fd < 0) |
| 1041 | goto out; |
| 1042 | |
| 1043 | while (1) { |
| 1044 | char bf[BUFSIZ]; |
| 1045 | GElf_Nhdr nhdr; |
| 1046 | int namesz, descsz; |
| 1047 | |
| 1048 | if (read(fd, &nhdr, sizeof(nhdr)) != sizeof(nhdr)) |
| 1049 | break; |
| 1050 | |
Arnaldo Carvalho de Melo | fd7a346 | 2009-11-20 20:51:25 -0200 | [diff] [blame] | 1051 | namesz = NOTE_ALIGN(nhdr.n_namesz); |
| 1052 | descsz = NOTE_ALIGN(nhdr.n_descsz); |
Arnaldo Carvalho de Melo | f1617b4 | 2009-11-18 20:20:52 -0200 | [diff] [blame] | 1053 | if (nhdr.n_type == NT_GNU_BUILD_ID && |
| 1054 | nhdr.n_namesz == sizeof("GNU")) { |
| 1055 | if (read(fd, bf, namesz) != namesz) |
| 1056 | break; |
| 1057 | if (memcmp(bf, "GNU", sizeof("GNU")) == 0) { |
| 1058 | if (read(fd, build_id, |
| 1059 | BUILD_ID_SIZE) == BUILD_ID_SIZE) { |
| 1060 | err = 0; |
| 1061 | break; |
| 1062 | } |
| 1063 | } else if (read(fd, bf, descsz) != descsz) |
| 1064 | break; |
| 1065 | } else { |
| 1066 | int n = namesz + descsz; |
| 1067 | if (read(fd, bf, n) != n) |
| 1068 | break; |
| 1069 | } |
| 1070 | } |
| 1071 | close(fd); |
| 1072 | out: |
| 1073 | return err; |
| 1074 | } |
| 1075 | |
Arnaldo Carvalho de Melo | 94cb9e3 | 2009-08-06 14:43:17 -0300 | [diff] [blame] | 1076 | char dso__symtab_origin(const struct dso *self) |
| 1077 | { |
| 1078 | static const char origin[] = { |
| 1079 | [DSO__ORIG_KERNEL] = 'k', |
| 1080 | [DSO__ORIG_JAVA_JIT] = 'j', |
| 1081 | [DSO__ORIG_FEDORA] = 'f', |
| 1082 | [DSO__ORIG_UBUNTU] = 'u', |
| 1083 | [DSO__ORIG_BUILDID] = 'b', |
| 1084 | [DSO__ORIG_DSO] = 'd', |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1085 | [DSO__ORIG_KMODULE] = 'K', |
Arnaldo Carvalho de Melo | 94cb9e3 | 2009-08-06 14:43:17 -0300 | [diff] [blame] | 1086 | }; |
| 1087 | |
| 1088 | if (self == NULL || self->origin == DSO__ORIG_NOT_FOUND) |
| 1089 | return '!'; |
| 1090 | return origin[self->origin]; |
| 1091 | } |
| 1092 | |
Arnaldo Carvalho de Melo | 6beba7a | 2009-10-21 17:34:06 -0200 | [diff] [blame] | 1093 | 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] | 1094 | { |
Arnaldo Carvalho de Melo | 4d1e00a | 2009-08-05 19:02:49 -0300 | [diff] [blame] | 1095 | int size = PATH_MAX; |
Arnaldo Carvalho de Melo | c338aee | 2009-11-20 20:51:27 -0200 | [diff] [blame] | 1096 | char *name; |
Arnaldo Carvalho de Melo | d3379ab | 2009-11-18 20:20:50 -0200 | [diff] [blame] | 1097 | u8 build_id[BUILD_ID_SIZE]; |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 1098 | int ret = -1; |
| 1099 | int fd; |
| 1100 | |
Arnaldo Carvalho de Melo | 3610583 | 2009-11-27 16:29:16 -0200 | [diff] [blame] | 1101 | dso__set_loaded(self, map->type); |
Arnaldo Carvalho de Melo | 66bd842 | 2009-10-28 21:51:21 -0200 | [diff] [blame] | 1102 | |
Arnaldo Carvalho de Melo | c338aee | 2009-11-20 20:51:27 -0200 | [diff] [blame] | 1103 | if (self->kernel) |
Arnaldo Carvalho de Melo | 9958e1f | 2009-12-11 14:50:36 -0200 | [diff] [blame] | 1104 | return dso__load_kernel_sym(self, map, kmaps, filter); |
Arnaldo Carvalho de Melo | c338aee | 2009-11-20 20:51:27 -0200 | [diff] [blame] | 1105 | |
| 1106 | name = malloc(size); |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 1107 | if (!name) |
| 1108 | return -1; |
| 1109 | |
Arnaldo Carvalho de Melo | 30d7a77 | 2009-07-02 21:24:14 -0300 | [diff] [blame] | 1110 | self->adjust_symbols = 0; |
Arnaldo Carvalho de Melo | f5812a7 | 2009-06-30 11:43:17 -0300 | [diff] [blame] | 1111 | |
Arnaldo Carvalho de Melo | 94cb9e3 | 2009-08-06 14:43:17 -0300 | [diff] [blame] | 1112 | if (strncmp(self->name, "/tmp/perf-", 10) == 0) { |
Arnaldo Carvalho de Melo | 6beba7a | 2009-10-21 17:34:06 -0200 | [diff] [blame] | 1113 | ret = dso__load_perf_map(self, map, filter); |
Arnaldo Carvalho de Melo | 94cb9e3 | 2009-08-06 14:43:17 -0300 | [diff] [blame] | 1114 | self->origin = ret > 0 ? DSO__ORIG_JAVA_JIT : |
| 1115 | DSO__ORIG_NOT_FOUND; |
| 1116 | return ret; |
| 1117 | } |
| 1118 | |
| 1119 | self->origin = DSO__ORIG_FEDORA - 1; |
Pekka Enberg | 80d496b | 2009-06-08 21:12:48 +0300 | [diff] [blame] | 1120 | |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 1121 | more: |
| 1122 | do { |
Arnaldo Carvalho de Melo | 94cb9e3 | 2009-08-06 14:43:17 -0300 | [diff] [blame] | 1123 | self->origin++; |
| 1124 | switch (self->origin) { |
| 1125 | case DSO__ORIG_FEDORA: |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1126 | snprintf(name, size, "/usr/lib/debug%s.debug", |
| 1127 | self->long_name); |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 1128 | break; |
Arnaldo Carvalho de Melo | 94cb9e3 | 2009-08-06 14:43:17 -0300 | [diff] [blame] | 1129 | case DSO__ORIG_UBUNTU: |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1130 | snprintf(name, size, "/usr/lib/debug%s", |
| 1131 | self->long_name); |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 1132 | break; |
Arnaldo Carvalho de Melo | 94cb9e3 | 2009-08-06 14:43:17 -0300 | [diff] [blame] | 1133 | case DSO__ORIG_BUILDID: |
Arnaldo Carvalho de Melo | d3379ab | 2009-11-18 20:20:50 -0200 | [diff] [blame] | 1134 | if (filename__read_build_id(self->long_name, build_id, |
| 1135 | sizeof(build_id))) { |
| 1136 | char build_id_hex[BUILD_ID_SIZE * 2 + 1]; |
| 1137 | |
| 1138 | build_id__sprintf(build_id, sizeof(build_id), |
| 1139 | build_id_hex); |
Arnaldo Carvalho de Melo | 4d1e00a | 2009-08-05 19:02:49 -0300 | [diff] [blame] | 1140 | snprintf(name, size, |
| 1141 | "/usr/lib/debug/.build-id/%.2s/%s.debug", |
Arnaldo Carvalho de Melo | d3379ab | 2009-11-18 20:20:50 -0200 | [diff] [blame] | 1142 | build_id_hex, build_id_hex + 2); |
| 1143 | if (self->has_build_id) |
| 1144 | goto compare_build_id; |
| 1145 | break; |
Arnaldo Carvalho de Melo | 4d1e00a | 2009-08-05 19:02:49 -0300 | [diff] [blame] | 1146 | } |
Arnaldo Carvalho de Melo | 94cb9e3 | 2009-08-06 14:43:17 -0300 | [diff] [blame] | 1147 | self->origin++; |
Arnaldo Carvalho de Melo | 4d1e00a | 2009-08-05 19:02:49 -0300 | [diff] [blame] | 1148 | /* Fall thru */ |
Arnaldo Carvalho de Melo | 94cb9e3 | 2009-08-06 14:43:17 -0300 | [diff] [blame] | 1149 | case DSO__ORIG_DSO: |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1150 | snprintf(name, size, "%s", self->long_name); |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 1151 | break; |
| 1152 | |
| 1153 | default: |
| 1154 | goto out; |
| 1155 | } |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 1156 | |
Arnaldo Carvalho de Melo | 8d06367 | 2009-11-04 18:50:43 -0200 | [diff] [blame] | 1157 | if (self->has_build_id) { |
Arnaldo Carvalho de Melo | d3379ab | 2009-11-18 20:20:50 -0200 | [diff] [blame] | 1158 | if (filename__read_build_id(name, build_id, |
| 1159 | sizeof(build_id)) < 0) |
Arnaldo Carvalho de Melo | 8d06367 | 2009-11-04 18:50:43 -0200 | [diff] [blame] | 1160 | goto more; |
Arnaldo Carvalho de Melo | 8d06367 | 2009-11-04 18:50:43 -0200 | [diff] [blame] | 1161 | compare_build_id: |
Arnaldo Carvalho de Melo | 78075ca | 2009-11-20 20:51:26 -0200 | [diff] [blame] | 1162 | if (!dso__build_id_equal(self, build_id)) |
Arnaldo Carvalho de Melo | 8d06367 | 2009-11-04 18:50:43 -0200 | [diff] [blame] | 1163 | goto more; |
| 1164 | } |
| 1165 | |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 1166 | fd = open(name, O_RDONLY); |
| 1167 | } while (fd < 0); |
| 1168 | |
Arnaldo Carvalho de Melo | 95011c6 | 2009-11-27 16:29:20 -0200 | [diff] [blame] | 1169 | ret = dso__load_sym(self, map, NULL, name, fd, filter, 0, 0); |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 1170 | close(fd); |
| 1171 | |
| 1172 | /* |
| 1173 | * Some people seem to have debuginfo files _WITHOUT_ debug info!?!? |
| 1174 | */ |
| 1175 | if (!ret) |
| 1176 | goto more; |
| 1177 | |
Arnaldo Carvalho de Melo | a25e46c | 2009-07-11 12:18:36 -0300 | [diff] [blame] | 1178 | if (ret > 0) { |
Arnaldo Carvalho de Melo | 8216416 | 2009-11-16 13:48:11 -0200 | [diff] [blame] | 1179 | int nr_plt = dso__synthesize_plt_symbols(self, map, filter); |
Arnaldo Carvalho de Melo | a25e46c | 2009-07-11 12:18:36 -0300 | [diff] [blame] | 1180 | if (nr_plt > 0) |
| 1181 | ret += nr_plt; |
| 1182 | } |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 1183 | out: |
| 1184 | free(name); |
Arnaldo Carvalho de Melo | 1340e6b | 2009-08-11 17:04:36 -0300 | [diff] [blame] | 1185 | if (ret < 0 && strstr(self->name, " (deleted)") != NULL) |
| 1186 | return 0; |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 1187 | return ret; |
| 1188 | } |
| 1189 | |
Arnaldo Carvalho de Melo | 9958e1f | 2009-12-11 14:50:36 -0200 | [diff] [blame] | 1190 | static struct map *map_groups__find_by_name(struct map_groups *self, char *name) |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1191 | { |
| 1192 | struct rb_node *nd; |
| 1193 | |
Arnaldo Carvalho de Melo | 95011c6 | 2009-11-27 16:29:20 -0200 | [diff] [blame] | 1194 | for (nd = rb_first(&self->maps[MAP__FUNCTION]); nd; nd = rb_next(nd)) { |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1195 | struct map *map = rb_entry(nd, struct map, rb_node); |
| 1196 | |
| 1197 | if (map->dso && strcmp(map->dso->name, name) == 0) |
| 1198 | return map; |
| 1199 | } |
| 1200 | |
| 1201 | return NULL; |
| 1202 | } |
| 1203 | |
Arnaldo Carvalho de Melo | c338aee | 2009-11-20 20:51:27 -0200 | [diff] [blame] | 1204 | static int dsos__set_modules_path_dir(char *dirname) |
Mike Galbraith | 6cfcc53 | 2009-07-02 08:08:36 +0200 | [diff] [blame] | 1205 | { |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1206 | struct dirent *dent; |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1207 | DIR *dir = opendir(dirname); |
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 (!dir) { |
Arnaldo Carvalho de Melo | 87f8ea4 | 2009-11-22 13:21:41 -0200 | [diff] [blame] | 1210 | pr_debug("%s: cannot open %s dir\n", __func__, dirname); |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1211 | return -1; |
Mike Galbraith | 6cfcc53 | 2009-07-02 08:08:36 +0200 | [diff] [blame] | 1212 | } |
| 1213 | |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1214 | while ((dent = readdir(dir)) != NULL) { |
| 1215 | char path[PATH_MAX]; |
Mike Galbraith | 6cfcc53 | 2009-07-02 08:08:36 +0200 | [diff] [blame] | 1216 | |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1217 | if (dent->d_type == DT_DIR) { |
| 1218 | if (!strcmp(dent->d_name, ".") || |
| 1219 | !strcmp(dent->d_name, "..")) |
| 1220 | continue; |
Mike Galbraith | 6cfcc53 | 2009-07-02 08:08:36 +0200 | [diff] [blame] | 1221 | |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1222 | snprintf(path, sizeof(path), "%s/%s", |
| 1223 | dirname, dent->d_name); |
Arnaldo Carvalho de Melo | c338aee | 2009-11-20 20:51:27 -0200 | [diff] [blame] | 1224 | if (dsos__set_modules_path_dir(path) < 0) |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1225 | goto failure; |
| 1226 | } else { |
| 1227 | char *dot = strrchr(dent->d_name, '.'), |
| 1228 | dso_name[PATH_MAX]; |
| 1229 | struct map *map; |
Arnaldo Carvalho de Melo | cfc10d3 | 2009-11-17 15:40:53 -0200 | [diff] [blame] | 1230 | char *long_name; |
Mike Galbraith | 6cfcc53 | 2009-07-02 08:08:36 +0200 | [diff] [blame] | 1231 | |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1232 | if (dot == NULL || strcmp(dot, ".ko")) |
| 1233 | continue; |
| 1234 | snprintf(dso_name, sizeof(dso_name), "[%.*s]", |
| 1235 | (int)(dot - dent->d_name), dent->d_name); |
Mike Galbraith | 6cfcc53 | 2009-07-02 08:08:36 +0200 | [diff] [blame] | 1236 | |
Arnaldo Carvalho de Melo | a2a99e8 | 2009-10-05 14:26:18 -0300 | [diff] [blame] | 1237 | strxfrchar(dso_name, '-', '_'); |
Arnaldo Carvalho de Melo | 9958e1f | 2009-12-11 14:50:36 -0200 | [diff] [blame] | 1238 | map = map_groups__find_by_name(kmaps, dso_name); |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1239 | if (map == NULL) |
| 1240 | continue; |
Mike Galbraith | 6cfcc53 | 2009-07-02 08:08:36 +0200 | [diff] [blame] | 1241 | |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1242 | snprintf(path, sizeof(path), "%s/%s", |
| 1243 | dirname, dent->d_name); |
Mike Galbraith | 6cfcc53 | 2009-07-02 08:08:36 +0200 | [diff] [blame] | 1244 | |
Arnaldo Carvalho de Melo | cfc10d3 | 2009-11-17 15:40:53 -0200 | [diff] [blame] | 1245 | long_name = strdup(path); |
| 1246 | if (long_name == NULL) |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1247 | goto failure; |
Arnaldo Carvalho de Melo | cfc10d3 | 2009-11-17 15:40:53 -0200 | [diff] [blame] | 1248 | dso__set_long_name(map->dso, long_name); |
Mike Galbraith | 6cfcc53 | 2009-07-02 08:08:36 +0200 | [diff] [blame] | 1249 | } |
Mike Galbraith | 6cfcc53 | 2009-07-02 08:08:36 +0200 | [diff] [blame] | 1250 | } |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1251 | |
Arnaldo Carvalho de Melo | c338aee | 2009-11-20 20:51:27 -0200 | [diff] [blame] | 1252 | return 0; |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1253 | failure: |
| 1254 | closedir(dir); |
| 1255 | return -1; |
Mike Galbraith | 6cfcc53 | 2009-07-02 08:08:36 +0200 | [diff] [blame] | 1256 | } |
| 1257 | |
Arnaldo Carvalho de Melo | c338aee | 2009-11-20 20:51:27 -0200 | [diff] [blame] | 1258 | static int dsos__set_modules_path(void) |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1259 | { |
| 1260 | struct utsname uts; |
| 1261 | char modules_path[PATH_MAX]; |
| 1262 | |
| 1263 | if (uname(&uts) < 0) |
| 1264 | return -1; |
| 1265 | |
| 1266 | snprintf(modules_path, sizeof(modules_path), "/lib/modules/%s/kernel", |
| 1267 | uts.release); |
| 1268 | |
Arnaldo Carvalho de Melo | c338aee | 2009-11-20 20:51:27 -0200 | [diff] [blame] | 1269 | return dsos__set_modules_path_dir(modules_path); |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1270 | } |
| 1271 | |
| 1272 | /* |
| 1273 | * Constructor variant for modules (where we know from /proc/modules where |
| 1274 | * they are loaded) and for vmlinux, where only after we load all the |
| 1275 | * symbols we'll know where it starts and ends. |
| 1276 | */ |
Arnaldo Carvalho de Melo | 3610583 | 2009-11-27 16:29:16 -0200 | [diff] [blame] | 1277 | static struct map *map__new2(u64 start, struct dso *dso, enum map_type type) |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1278 | { |
| 1279 | struct map *self = malloc(sizeof(*self)); |
| 1280 | |
| 1281 | if (self != NULL) { |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1282 | /* |
Arnaldo Carvalho de Melo | afb7b4f | 2009-10-30 16:28:23 -0200 | [diff] [blame] | 1283 | * ->end will be filled after we load all the symbols |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1284 | */ |
Arnaldo Carvalho de Melo | 3610583 | 2009-11-27 16:29:16 -0200 | [diff] [blame] | 1285 | map__init(self, type, start, 0, 0, dso); |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1286 | } |
Arnaldo Carvalho de Melo | afb7b4f | 2009-10-30 16:28:23 -0200 | [diff] [blame] | 1287 | |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1288 | return self; |
| 1289 | } |
| 1290 | |
Arnaldo Carvalho de Melo | 9958e1f | 2009-12-11 14:50:36 -0200 | [diff] [blame] | 1291 | static int map_groups__create_module_maps(struct map_groups *self) |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1292 | { |
| 1293 | char *line = NULL; |
| 1294 | size_t n; |
| 1295 | FILE *file = fopen("/proc/modules", "r"); |
| 1296 | struct map *map; |
| 1297 | |
| 1298 | if (file == NULL) |
| 1299 | return -1; |
| 1300 | |
| 1301 | while (!feof(file)) { |
| 1302 | char name[PATH_MAX]; |
| 1303 | u64 start; |
| 1304 | struct dso *dso; |
| 1305 | char *sep; |
| 1306 | int line_len; |
| 1307 | |
| 1308 | line_len = getline(&line, &n, file); |
| 1309 | if (line_len < 0) |
| 1310 | break; |
| 1311 | |
| 1312 | if (!line) |
| 1313 | goto out_failure; |
| 1314 | |
| 1315 | line[--line_len] = '\0'; /* \n */ |
| 1316 | |
| 1317 | sep = strrchr(line, 'x'); |
| 1318 | if (sep == NULL) |
| 1319 | continue; |
| 1320 | |
| 1321 | hex2u64(sep + 1, &start); |
| 1322 | |
| 1323 | sep = strchr(line, ' '); |
| 1324 | if (sep == NULL) |
| 1325 | continue; |
| 1326 | |
| 1327 | *sep = '\0'; |
| 1328 | |
| 1329 | snprintf(name, sizeof(name), "[%s]", line); |
Arnaldo Carvalho de Melo | 00a192b | 2009-10-30 16:28:24 -0200 | [diff] [blame] | 1330 | dso = dso__new(name); |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1331 | |
| 1332 | if (dso == NULL) |
| 1333 | goto out_delete_line; |
| 1334 | |
Arnaldo Carvalho de Melo | 3610583 | 2009-11-27 16:29:16 -0200 | [diff] [blame] | 1335 | map = map__new2(start, dso, MAP__FUNCTION); |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1336 | if (map == NULL) { |
| 1337 | dso__delete(dso); |
| 1338 | goto out_delete_line; |
| 1339 | } |
| 1340 | |
Arnaldo Carvalho de Melo | f1617b4 | 2009-11-18 20:20:52 -0200 | [diff] [blame] | 1341 | snprintf(name, sizeof(name), |
| 1342 | "/sys/module/%s/notes/.note.gnu.build-id", line); |
| 1343 | if (sysfs__read_build_id(name, dso->build_id, |
| 1344 | sizeof(dso->build_id)) == 0) |
| 1345 | dso->has_build_id = true; |
| 1346 | |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1347 | dso->origin = DSO__ORIG_KMODULE; |
Arnaldo Carvalho de Melo | 9958e1f | 2009-12-11 14:50:36 -0200 | [diff] [blame] | 1348 | map_groups__insert(self, map); |
Arnaldo Carvalho de Melo | b0da954 | 2009-11-27 16:29:14 -0200 | [diff] [blame] | 1349 | dsos__add(&dsos__kernel, dso); |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1350 | } |
| 1351 | |
| 1352 | free(line); |
| 1353 | fclose(file); |
| 1354 | |
Arnaldo Carvalho de Melo | c338aee | 2009-11-20 20:51:27 -0200 | [diff] [blame] | 1355 | return dsos__set_modules_path(); |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1356 | |
| 1357 | out_delete_line: |
| 1358 | free(line); |
| 1359 | out_failure: |
| 1360 | return -1; |
| 1361 | } |
| 1362 | |
Arnaldo Carvalho de Melo | 9958e1f | 2009-12-11 14:50:36 -0200 | [diff] [blame] | 1363 | static int dso__load_vmlinux(struct dso *self, struct map *map, |
| 1364 | struct map_groups *mg, |
Arnaldo Carvalho de Melo | 6beba7a | 2009-10-21 17:34:06 -0200 | [diff] [blame] | 1365 | const char *vmlinux, symbol_filter_t filter) |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 1366 | { |
Arnaldo Carvalho de Melo | fbd733b | 2009-11-20 20:51:28 -0200 | [diff] [blame] | 1367 | int err = -1, fd; |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 1368 | |
Arnaldo Carvalho de Melo | fbd733b | 2009-11-20 20:51:28 -0200 | [diff] [blame] | 1369 | if (self->has_build_id) { |
| 1370 | u8 build_id[BUILD_ID_SIZE]; |
Arnaldo Carvalho de Melo | 66bd842 | 2009-10-28 21:51:21 -0200 | [diff] [blame] | 1371 | |
Arnaldo Carvalho de Melo | fbd733b | 2009-11-20 20:51:28 -0200 | [diff] [blame] | 1372 | if (filename__read_build_id(vmlinux, build_id, |
| 1373 | sizeof(build_id)) < 0) { |
| 1374 | pr_debug("No build_id in %s, ignoring it\n", vmlinux); |
| 1375 | return -1; |
| 1376 | } |
| 1377 | if (!dso__build_id_equal(self, build_id)) { |
| 1378 | char expected_build_id[BUILD_ID_SIZE * 2 + 1], |
| 1379 | vmlinux_build_id[BUILD_ID_SIZE * 2 + 1]; |
| 1380 | |
| 1381 | build_id__sprintf(self->build_id, |
| 1382 | sizeof(self->build_id), |
| 1383 | expected_build_id); |
| 1384 | build_id__sprintf(build_id, sizeof(build_id), |
| 1385 | vmlinux_build_id); |
| 1386 | pr_debug("build_id in %s is %s while expected is %s, " |
| 1387 | "ignoring it\n", vmlinux, vmlinux_build_id, |
| 1388 | expected_build_id); |
| 1389 | return -1; |
| 1390 | } |
| 1391 | } |
| 1392 | |
| 1393 | fd = open(vmlinux, O_RDONLY); |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 1394 | if (fd < 0) |
| 1395 | return -1; |
| 1396 | |
Arnaldo Carvalho de Melo | 3610583 | 2009-11-27 16:29:16 -0200 | [diff] [blame] | 1397 | dso__set_loaded(self, map->type); |
Arnaldo Carvalho de Melo | 9958e1f | 2009-12-11 14:50:36 -0200 | [diff] [blame] | 1398 | err = dso__load_sym(self, map, mg, self->long_name, fd, filter, 1, 0); |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 1399 | close(fd); |
| 1400 | |
| 1401 | return err; |
| 1402 | } |
| 1403 | |
Arnaldo Carvalho de Melo | c338aee | 2009-11-20 20:51:27 -0200 | [diff] [blame] | 1404 | static int dso__load_kernel_sym(struct dso *self, struct map *map, |
Arnaldo Carvalho de Melo | 9958e1f | 2009-12-11 14:50:36 -0200 | [diff] [blame] | 1405 | struct map_groups *mg, symbol_filter_t filter) |
Arnaldo Carvalho de Melo | a827c87 | 2009-05-28 14:55:19 -0300 | [diff] [blame] | 1406 | { |
Arnaldo Carvalho de Melo | cc612d8 | 2009-11-23 16:39:10 -0200 | [diff] [blame] | 1407 | int err; |
| 1408 | bool is_kallsyms; |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1409 | |
Arnaldo Carvalho de Melo | cc612d8 | 2009-11-23 16:39:10 -0200 | [diff] [blame] | 1410 | if (vmlinux_path != NULL) { |
| 1411 | int i; |
| 1412 | pr_debug("Looking at the vmlinux_path (%d entries long)\n", |
| 1413 | vmlinux_path__nr_entries); |
| 1414 | for (i = 0; i < vmlinux_path__nr_entries; ++i) { |
Arnaldo Carvalho de Melo | 9958e1f | 2009-12-11 14:50:36 -0200 | [diff] [blame] | 1415 | err = dso__load_vmlinux(self, map, mg, |
Arnaldo Carvalho de Melo | 95011c6 | 2009-11-27 16:29:20 -0200 | [diff] [blame] | 1416 | vmlinux_path[i], filter); |
Arnaldo Carvalho de Melo | cc612d8 | 2009-11-23 16:39:10 -0200 | [diff] [blame] | 1417 | if (err > 0) { |
| 1418 | pr_debug("Using %s for symbols\n", |
| 1419 | vmlinux_path[i]); |
| 1420 | dso__set_long_name(self, |
| 1421 | strdup(vmlinux_path[i])); |
| 1422 | goto out_fixup; |
| 1423 | } |
| 1424 | } |
| 1425 | } |
| 1426 | |
| 1427 | is_kallsyms = self->long_name[0] == '['; |
| 1428 | if (is_kallsyms) |
| 1429 | goto do_kallsyms; |
| 1430 | |
Arnaldo Carvalho de Melo | 9958e1f | 2009-12-11 14:50:36 -0200 | [diff] [blame] | 1431 | err = dso__load_vmlinux(self, map, mg, self->long_name, filter); |
Arnaldo Carvalho de Melo | ef6ae72 | 2009-11-20 20:51:29 -0200 | [diff] [blame] | 1432 | if (err <= 0) { |
Arnaldo Carvalho de Melo | cc612d8 | 2009-11-23 16:39:10 -0200 | [diff] [blame] | 1433 | pr_info("The file %s cannot be used, " |
| 1434 | "trying to use /proc/kallsyms...", self->long_name); |
Arnaldo Carvalho de Melo | cc612d8 | 2009-11-23 16:39:10 -0200 | [diff] [blame] | 1435 | do_kallsyms: |
Arnaldo Carvalho de Melo | 9958e1f | 2009-12-11 14:50:36 -0200 | [diff] [blame] | 1436 | err = dso__load_kallsyms(self, map, mg, filter); |
Arnaldo Carvalho de Melo | cc612d8 | 2009-11-23 16:39:10 -0200 | [diff] [blame] | 1437 | if (err > 0 && !is_kallsyms) |
Arnaldo Carvalho de Melo | ef6ae72 | 2009-11-20 20:51:29 -0200 | [diff] [blame] | 1438 | dso__set_long_name(self, strdup("[kernel.kallsyms]")); |
| 1439 | } |
Arnaldo Carvalho de Melo | a827c87 | 2009-05-28 14:55:19 -0300 | [diff] [blame] | 1440 | |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1441 | if (err > 0) { |
Arnaldo Carvalho de Melo | cc612d8 | 2009-11-23 16:39:10 -0200 | [diff] [blame] | 1442 | out_fixup: |
Arnaldo Carvalho de Melo | 6a4694a | 2009-11-27 16:29:17 -0200 | [diff] [blame] | 1443 | map__fixup_start(map); |
| 1444 | map__fixup_end(map); |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1445 | } |
Arnaldo Carvalho de Melo | 94cb9e3 | 2009-08-06 14:43:17 -0300 | [diff] [blame] | 1446 | |
Arnaldo Carvalho de Melo | a827c87 | 2009-05-28 14:55:19 -0300 | [diff] [blame] | 1447 | return err; |
| 1448 | } |
| 1449 | |
Arnaldo Carvalho de Melo | b0da954 | 2009-11-27 16:29:14 -0200 | [diff] [blame] | 1450 | LIST_HEAD(dsos__user); |
| 1451 | LIST_HEAD(dsos__kernel); |
Arnaldo Carvalho de Melo | cc612d8 | 2009-11-23 16:39:10 -0200 | [diff] [blame] | 1452 | struct dso *vdso; |
Frederic Weisbecker | cd84c2a | 2009-08-12 10:03:49 +0200 | [diff] [blame] | 1453 | |
Arnaldo Carvalho de Melo | b0da954 | 2009-11-27 16:29:14 -0200 | [diff] [blame] | 1454 | static void dsos__add(struct list_head *head, struct dso *dso) |
Frederic Weisbecker | cd84c2a | 2009-08-12 10:03:49 +0200 | [diff] [blame] | 1455 | { |
Arnaldo Carvalho de Melo | b0da954 | 2009-11-27 16:29:14 -0200 | [diff] [blame] | 1456 | list_add_tail(&dso->node, head); |
Frederic Weisbecker | cd84c2a | 2009-08-12 10:03:49 +0200 | [diff] [blame] | 1457 | } |
| 1458 | |
Arnaldo Carvalho de Melo | b0da954 | 2009-11-27 16:29:14 -0200 | [diff] [blame] | 1459 | static struct dso *dsos__find(struct list_head *head, const char *name) |
Frederic Weisbecker | cd84c2a | 2009-08-12 10:03:49 +0200 | [diff] [blame] | 1460 | { |
| 1461 | struct dso *pos; |
| 1462 | |
Arnaldo Carvalho de Melo | b0da954 | 2009-11-27 16:29:14 -0200 | [diff] [blame] | 1463 | list_for_each_entry(pos, head, node) |
Frederic Weisbecker | cd84c2a | 2009-08-12 10:03:49 +0200 | [diff] [blame] | 1464 | if (strcmp(pos->name, name) == 0) |
| 1465 | return pos; |
| 1466 | return NULL; |
| 1467 | } |
| 1468 | |
Arnaldo Carvalho de Melo | 00a192b | 2009-10-30 16:28:24 -0200 | [diff] [blame] | 1469 | struct dso *dsos__findnew(const char *name) |
Frederic Weisbecker | cd84c2a | 2009-08-12 10:03:49 +0200 | [diff] [blame] | 1470 | { |
Arnaldo Carvalho de Melo | b0da954 | 2009-11-27 16:29:14 -0200 | [diff] [blame] | 1471 | struct dso *dso = dsos__find(&dsos__user, name); |
Frederic Weisbecker | cd84c2a | 2009-08-12 10:03:49 +0200 | [diff] [blame] | 1472 | |
Arnaldo Carvalho de Melo | e420499 | 2009-10-20 14:25:40 -0200 | [diff] [blame] | 1473 | if (!dso) { |
Arnaldo Carvalho de Melo | 00a192b | 2009-10-30 16:28:24 -0200 | [diff] [blame] | 1474 | dso = dso__new(name); |
Arnaldo Carvalho de Melo | cfc10d3 | 2009-11-17 15:40:53 -0200 | [diff] [blame] | 1475 | if (dso != NULL) { |
Arnaldo Carvalho de Melo | b0da954 | 2009-11-27 16:29:14 -0200 | [diff] [blame] | 1476 | dsos__add(&dsos__user, dso); |
Arnaldo Carvalho de Melo | cfc10d3 | 2009-11-17 15:40:53 -0200 | [diff] [blame] | 1477 | dso__set_basename(dso); |
| 1478 | } |
Arnaldo Carvalho de Melo | 66bd842 | 2009-10-28 21:51:21 -0200 | [diff] [blame] | 1479 | } |
Frederic Weisbecker | cd84c2a | 2009-08-12 10:03:49 +0200 | [diff] [blame] | 1480 | |
| 1481 | return dso; |
Frederic Weisbecker | cd84c2a | 2009-08-12 10:03:49 +0200 | [diff] [blame] | 1482 | } |
| 1483 | |
Arnaldo Carvalho de Melo | b0da954 | 2009-11-27 16:29:14 -0200 | [diff] [blame] | 1484 | static void __dsos__fprintf(struct list_head *head, FILE *fp) |
Frederic Weisbecker | cd84c2a | 2009-08-12 10:03:49 +0200 | [diff] [blame] | 1485 | { |
| 1486 | struct dso *pos; |
| 1487 | |
Arnaldo Carvalho de Melo | 95011c6 | 2009-11-27 16:29:20 -0200 | [diff] [blame] | 1488 | list_for_each_entry(pos, head, node) { |
| 1489 | int i; |
| 1490 | for (i = 0; i < MAP__NR_TYPES; ++i) |
| 1491 | dso__fprintf(pos, i, fp); |
| 1492 | } |
Frederic Weisbecker | cd84c2a | 2009-08-12 10:03:49 +0200 | [diff] [blame] | 1493 | } |
| 1494 | |
Arnaldo Carvalho de Melo | b0da954 | 2009-11-27 16:29:14 -0200 | [diff] [blame] | 1495 | void dsos__fprintf(FILE *fp) |
| 1496 | { |
| 1497 | __dsos__fprintf(&dsos__kernel, fp); |
| 1498 | __dsos__fprintf(&dsos__user, fp); |
| 1499 | } |
| 1500 | |
| 1501 | static size_t __dsos__fprintf_buildid(struct list_head *head, FILE *fp) |
Arnaldo Carvalho de Melo | 9e03eb2 | 2009-11-16 16:32:44 -0200 | [diff] [blame] | 1502 | { |
| 1503 | struct dso *pos; |
| 1504 | size_t ret = 0; |
| 1505 | |
Arnaldo Carvalho de Melo | b0da954 | 2009-11-27 16:29:14 -0200 | [diff] [blame] | 1506 | list_for_each_entry(pos, head, node) { |
Arnaldo Carvalho de Melo | 9e03eb2 | 2009-11-16 16:32:44 -0200 | [diff] [blame] | 1507 | ret += dso__fprintf_buildid(pos, fp); |
Arnaldo Carvalho de Melo | 1124ba7 | 2009-11-16 21:45:25 -0200 | [diff] [blame] | 1508 | ret += fprintf(fp, " %s\n", pos->long_name); |
Arnaldo Carvalho de Melo | 9e03eb2 | 2009-11-16 16:32:44 -0200 | [diff] [blame] | 1509 | } |
| 1510 | return ret; |
| 1511 | } |
| 1512 | |
Arnaldo Carvalho de Melo | b0da954 | 2009-11-27 16:29:14 -0200 | [diff] [blame] | 1513 | size_t dsos__fprintf_buildid(FILE *fp) |
| 1514 | { |
| 1515 | return (__dsos__fprintf_buildid(&dsos__kernel, fp) + |
| 1516 | __dsos__fprintf_buildid(&dsos__user, fp)); |
| 1517 | } |
| 1518 | |
Arnaldo Carvalho de Melo | 9958e1f | 2009-12-11 14:50:36 -0200 | [diff] [blame] | 1519 | static int map_groups__create_kernel_map(struct map_groups *self, const char *vmlinux) |
Frederic Weisbecker | cd84c2a | 2009-08-12 10:03:49 +0200 | [diff] [blame] | 1520 | { |
Arnaldo Carvalho de Melo | 4e06255 | 2009-11-27 16:29:18 -0200 | [diff] [blame] | 1521 | struct map *kmap; |
Arnaldo Carvalho de Melo | 95011c6 | 2009-11-27 16:29:20 -0200 | [diff] [blame] | 1522 | struct dso *kernel = dso__new(vmlinux ?: "[kernel.kallsyms]"); |
Frederic Weisbecker | cd84c2a | 2009-08-12 10:03:49 +0200 | [diff] [blame] | 1523 | |
Arnaldo Carvalho de Melo | 2446042 | 2009-11-18 20:20:53 -0200 | [diff] [blame] | 1524 | if (kernel == NULL) |
Arnaldo Carvalho de Melo | c338aee | 2009-11-20 20:51:27 -0200 | [diff] [blame] | 1525 | return -1; |
| 1526 | |
Arnaldo Carvalho de Melo | 4e06255 | 2009-11-27 16:29:18 -0200 | [diff] [blame] | 1527 | kmap = map__new2(0, kernel, MAP__FUNCTION); |
| 1528 | if (kmap == NULL) |
Arnaldo Carvalho de Melo | c338aee | 2009-11-20 20:51:27 -0200 | [diff] [blame] | 1529 | goto out_delete_kernel_dso; |
| 1530 | |
Arnaldo Carvalho de Melo | 4e06255 | 2009-11-27 16:29:18 -0200 | [diff] [blame] | 1531 | kmap->map_ip = kmap->unmap_ip = identity__map_ip; |
| 1532 | kernel->short_name = "[kernel]"; |
| 1533 | kernel->kernel = 1; |
Arnaldo Carvalho de Melo | 2446042 | 2009-11-18 20:20:53 -0200 | [diff] [blame] | 1534 | |
Arnaldo Carvalho de Melo | 00a192b | 2009-10-30 16:28:24 -0200 | [diff] [blame] | 1535 | vdso = dso__new("[vdso]"); |
Arnaldo Carvalho de Melo | c338aee | 2009-11-20 20:51:27 -0200 | [diff] [blame] | 1536 | if (vdso == NULL) |
| 1537 | goto out_delete_kernel_map; |
Arnaldo Carvalho de Melo | 3610583 | 2009-11-27 16:29:16 -0200 | [diff] [blame] | 1538 | dso__set_loaded(vdso, MAP__FUNCTION); |
Frederic Weisbecker | cd84c2a | 2009-08-12 10:03:49 +0200 | [diff] [blame] | 1539 | |
Arnaldo Carvalho de Melo | 2446042 | 2009-11-18 20:20:53 -0200 | [diff] [blame] | 1540 | if (sysfs__read_build_id("/sys/kernel/notes", kernel->build_id, |
| 1541 | sizeof(kernel->build_id)) == 0) |
| 1542 | kernel->has_build_id = true; |
| 1543 | |
Arnaldo Carvalho de Melo | 9958e1f | 2009-12-11 14:50:36 -0200 | [diff] [blame] | 1544 | map_groups__insert(self, kmap); |
Arnaldo Carvalho de Melo | b0da954 | 2009-11-27 16:29:14 -0200 | [diff] [blame] | 1545 | dsos__add(&dsos__kernel, kernel); |
| 1546 | dsos__add(&dsos__user, vdso); |
Frederic Weisbecker | cd84c2a | 2009-08-12 10:03:49 +0200 | [diff] [blame] | 1547 | |
Arnaldo Carvalho de Melo | c338aee | 2009-11-20 20:51:27 -0200 | [diff] [blame] | 1548 | return 0; |
| 1549 | |
| 1550 | out_delete_kernel_map: |
Arnaldo Carvalho de Melo | 4e06255 | 2009-11-27 16:29:18 -0200 | [diff] [blame] | 1551 | map__delete(kmap); |
Arnaldo Carvalho de Melo | c338aee | 2009-11-20 20:51:27 -0200 | [diff] [blame] | 1552 | out_delete_kernel_dso: |
| 1553 | dso__delete(kernel); |
| 1554 | return -1; |
Arnaldo Carvalho de Melo | 2446042 | 2009-11-18 20:20:53 -0200 | [diff] [blame] | 1555 | } |
| 1556 | |
Arnaldo Carvalho de Melo | cc612d8 | 2009-11-23 16:39:10 -0200 | [diff] [blame] | 1557 | static void vmlinux_path__exit(void) |
Arnaldo Carvalho de Melo | 2446042 | 2009-11-18 20:20:53 -0200 | [diff] [blame] | 1558 | { |
Arnaldo Carvalho de Melo | cc612d8 | 2009-11-23 16:39:10 -0200 | [diff] [blame] | 1559 | while (--vmlinux_path__nr_entries >= 0) { |
| 1560 | free(vmlinux_path[vmlinux_path__nr_entries]); |
| 1561 | vmlinux_path[vmlinux_path__nr_entries] = NULL; |
| 1562 | } |
| 1563 | |
| 1564 | free(vmlinux_path); |
| 1565 | vmlinux_path = NULL; |
| 1566 | } |
| 1567 | |
| 1568 | static int vmlinux_path__init(void) |
| 1569 | { |
| 1570 | struct utsname uts; |
| 1571 | char bf[PATH_MAX]; |
| 1572 | |
| 1573 | if (uname(&uts) < 0) |
Arnaldo Carvalho de Melo | 2446042 | 2009-11-18 20:20:53 -0200 | [diff] [blame] | 1574 | return -1; |
| 1575 | |
Arnaldo Carvalho de Melo | cc612d8 | 2009-11-23 16:39:10 -0200 | [diff] [blame] | 1576 | vmlinux_path = malloc(sizeof(char *) * 5); |
| 1577 | if (vmlinux_path == NULL) |
| 1578 | return -1; |
| 1579 | |
| 1580 | vmlinux_path[vmlinux_path__nr_entries] = strdup("vmlinux"); |
| 1581 | if (vmlinux_path[vmlinux_path__nr_entries] == NULL) |
| 1582 | goto out_fail; |
| 1583 | ++vmlinux_path__nr_entries; |
| 1584 | vmlinux_path[vmlinux_path__nr_entries] = strdup("/boot/vmlinux"); |
| 1585 | if (vmlinux_path[vmlinux_path__nr_entries] == NULL) |
| 1586 | goto out_fail; |
| 1587 | ++vmlinux_path__nr_entries; |
| 1588 | snprintf(bf, sizeof(bf), "/boot/vmlinux-%s", uts.release); |
| 1589 | vmlinux_path[vmlinux_path__nr_entries] = strdup(bf); |
| 1590 | if (vmlinux_path[vmlinux_path__nr_entries] == NULL) |
| 1591 | goto out_fail; |
| 1592 | ++vmlinux_path__nr_entries; |
| 1593 | snprintf(bf, sizeof(bf), "/lib/modules/%s/build/vmlinux", uts.release); |
| 1594 | vmlinux_path[vmlinux_path__nr_entries] = strdup(bf); |
| 1595 | if (vmlinux_path[vmlinux_path__nr_entries] == NULL) |
| 1596 | goto out_fail; |
| 1597 | ++vmlinux_path__nr_entries; |
| 1598 | snprintf(bf, sizeof(bf), "/usr/lib/debug/lib/modules/%s/vmlinux", |
| 1599 | uts.release); |
| 1600 | vmlinux_path[vmlinux_path__nr_entries] = strdup(bf); |
| 1601 | if (vmlinux_path[vmlinux_path__nr_entries] == NULL) |
| 1602 | goto out_fail; |
| 1603 | ++vmlinux_path__nr_entries; |
| 1604 | |
| 1605 | return 0; |
| 1606 | |
| 1607 | out_fail: |
| 1608 | vmlinux_path__exit(); |
| 1609 | return -1; |
| 1610 | } |
| 1611 | |
Arnaldo Carvalho de Melo | 95011c6 | 2009-11-27 16:29:20 -0200 | [diff] [blame] | 1612 | int symbol__init(struct symbol_conf *conf) |
Arnaldo Carvalho de Melo | cc612d8 | 2009-11-23 16:39:10 -0200 | [diff] [blame] | 1613 | { |
Arnaldo Carvalho de Melo | b32d133 | 2009-11-24 12:05:15 -0200 | [diff] [blame] | 1614 | const struct symbol_conf *pconf = conf ?: &symbol_conf__defaults; |
| 1615 | |
Arnaldo Carvalho de Melo | 95011c6 | 2009-11-27 16:29:20 -0200 | [diff] [blame] | 1616 | elf_version(EV_CURRENT); |
Arnaldo Carvalho de Melo | b32d133 | 2009-11-24 12:05:15 -0200 | [diff] [blame] | 1617 | symbol__priv_size = pconf->priv_size; |
Arnaldo Carvalho de Melo | 9958e1f | 2009-12-11 14:50:36 -0200 | [diff] [blame] | 1618 | map_groups__init(kmaps); |
Arnaldo Carvalho de Melo | b32d133 | 2009-11-24 12:05:15 -0200 | [diff] [blame] | 1619 | |
| 1620 | if (pconf->try_vmlinux_path && vmlinux_path__init() < 0) |
Arnaldo Carvalho de Melo | cc612d8 | 2009-11-23 16:39:10 -0200 | [diff] [blame] | 1621 | return -1; |
| 1622 | |
Arnaldo Carvalho de Melo | 9958e1f | 2009-12-11 14:50:36 -0200 | [diff] [blame] | 1623 | if (map_groups__create_kernel_map(kmaps, pconf->vmlinux_name) < 0) { |
Arnaldo Carvalho de Melo | cc612d8 | 2009-11-23 16:39:10 -0200 | [diff] [blame] | 1624 | vmlinux_path__exit(); |
| 1625 | return -1; |
| 1626 | } |
| 1627 | |
Arnaldo Carvalho de Melo | 9958e1f | 2009-12-11 14:50:36 -0200 | [diff] [blame] | 1628 | kmaps->use_modules = pconf->use_modules; |
| 1629 | if (pconf->use_modules && map_groups__create_module_maps(kmaps) < 0) |
Arnaldo Carvalho de Melo | 87f8ea4 | 2009-11-22 13:21:41 -0200 | [diff] [blame] | 1630 | pr_debug("Failed to load list of modules in use, " |
| 1631 | "continuing...\n"); |
Arnaldo Carvalho de Melo | 90c8321 | 2009-11-21 14:31:24 -0200 | [diff] [blame] | 1632 | /* |
| 1633 | * Now that we have all the maps created, just set the ->end of them: |
| 1634 | */ |
Arnaldo Carvalho de Melo | 9958e1f | 2009-12-11 14:50:36 -0200 | [diff] [blame] | 1635 | map_groups__fixup_end(kmaps); |
Arnaldo Carvalho de Melo | 6671cb1 | 2009-11-20 20:51:24 -0200 | [diff] [blame] | 1636 | return 0; |
Frederic Weisbecker | cd84c2a | 2009-08-12 10:03:49 +0200 | [diff] [blame] | 1637 | } |