Arnaldo Carvalho de Melo | 5aab621 | 2010-03-25 19:59:00 -0300 | [diff] [blame] | 1 | #include <dirent.h> |
| 2 | #include <errno.h> |
Arnaldo Carvalho de Melo | 5aab621 | 2010-03-25 19:59:00 -0300 | [diff] [blame] | 3 | #include <stdlib.h> |
| 4 | #include <stdio.h> |
| 5 | #include <string.h> |
| 6 | #include <sys/types.h> |
| 7 | #include <sys/stat.h> |
| 8 | #include <sys/param.h> |
| 9 | #include <fcntl.h> |
| 10 | #include <unistd.h> |
Arnaldo Carvalho de Melo | 9486aa3 | 2011-01-22 20:37:02 -0200 | [diff] [blame] | 11 | #include <inttypes.h> |
Arnaldo Carvalho de Melo | b36f19d | 2010-05-20 12:15:33 -0300 | [diff] [blame] | 12 | #include "build-id.h" |
Namhyung Kim | e334c72 | 2012-02-10 10:10:17 +0900 | [diff] [blame] | 13 | #include "util.h" |
Arnaldo Carvalho de Melo | 8a6c5b2 | 2010-07-20 14:42:52 -0300 | [diff] [blame] | 14 | #include "debug.h" |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 15 | #include "symbol.h" |
Arnaldo Carvalho de Melo | 5aab621 | 2010-03-25 19:59:00 -0300 | [diff] [blame] | 16 | #include "strlist.h" |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 17 | |
| 18 | #include <libelf.h> |
| 19 | #include <gelf.h> |
| 20 | #include <elf.h> |
Arnaldo Carvalho de Melo | f1617b4 | 2009-11-18 20:20:52 -0200 | [diff] [blame] | 21 | #include <limits.h> |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 22 | #include <sys/utsname.h> |
Peter Zijlstra | 2cdbc46 | 2009-08-05 14:05:16 +0200 | [diff] [blame] | 23 | |
Arnaldo Carvalho de Melo | 3b01a41 | 2010-12-22 01:08:36 -0200 | [diff] [blame] | 24 | #ifndef KSYM_NAME_LEN |
Ricardo Ribalda Delgado | c752d04 | 2011-10-20 09:43:26 +0200 | [diff] [blame] | 25 | #define KSYM_NAME_LEN 256 |
Arnaldo Carvalho de Melo | 3b01a41 | 2010-12-22 01:08:36 -0200 | [diff] [blame] | 26 | #endif |
| 27 | |
Arnaldo Carvalho de Melo | c12e15e | 2009-11-21 14:31:25 -0200 | [diff] [blame] | 28 | #ifndef NT_GNU_BUILD_ID |
| 29 | #define NT_GNU_BUILD_ID 3 |
| 30 | #endif |
| 31 | |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 32 | static bool dso__build_id_equal(const struct dso *dso, u8 *build_id); |
Dave Martin | 21916c3 | 2010-07-30 09:08:08 -0300 | [diff] [blame] | 33 | static int elf_read_build_id(Elf *elf, void *bf, size_t size); |
Arnaldo Carvalho de Melo | b0da954 | 2009-11-27 16:29:14 -0200 | [diff] [blame] | 34 | static void dsos__add(struct list_head *head, struct dso *dso); |
Arnaldo Carvalho de Melo | 3610583 | 2009-11-27 16:29:16 -0200 | [diff] [blame] | 35 | static struct map *map__new2(u64 start, struct dso *dso, enum map_type type); |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 36 | static int dso__load_kernel_sym(struct dso *dso, struct map *map, |
Arnaldo Carvalho de Melo | 9de89fe | 2010-02-03 16:52:00 -0200 | [diff] [blame] | 37 | symbol_filter_t filter); |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 38 | static int dso__load_guest_kernel_sym(struct dso *dso, struct map *map, |
Zhang, Yanmin | a1645ce | 2010-04-19 13:32:50 +0800 | [diff] [blame] | 39 | symbol_filter_t filter); |
Arnaldo Carvalho de Melo | cc612d8 | 2009-11-23 16:39:10 -0200 | [diff] [blame] | 40 | static int vmlinux_path__nr_entries; |
| 41 | static char **vmlinux_path; |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 42 | |
Arnaldo Carvalho de Melo | 75be6cf | 2009-12-15 20:04:39 -0200 | [diff] [blame] | 43 | struct symbol_conf symbol_conf = { |
Arnaldo Carvalho de Melo | d599db3 | 2009-12-15 20:04:42 -0200 | [diff] [blame] | 44 | .exclude_other = true, |
Arnaldo Carvalho de Melo | b32d133 | 2009-11-24 12:05:15 -0200 | [diff] [blame] | 45 | .use_modules = true, |
| 46 | .try_vmlinux_path = true, |
Stephane Eranian | 3e6a2a7 | 2011-05-17 17:32:07 +0200 | [diff] [blame] | 47 | .annotate_src = true, |
David Ahern | ec5761e | 2010-12-09 13:27:07 -0700 | [diff] [blame] | 48 | .symfs = "", |
Arnaldo Carvalho de Melo | b32d133 | 2009-11-24 12:05:15 -0200 | [diff] [blame] | 49 | }; |
| 50 | |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 51 | int dso__name_len(const struct dso *dso) |
Arnaldo Carvalho de Melo | 8a6c5b2 | 2010-07-20 14:42:52 -0300 | [diff] [blame] | 52 | { |
David Miller | 1e2dd2f | 2012-03-25 16:28:22 -0400 | [diff] [blame] | 53 | if (!dso) |
| 54 | return strlen("[unknown]"); |
Arnaldo Carvalho de Melo | 8a6c5b2 | 2010-07-20 14:42:52 -0300 | [diff] [blame] | 55 | if (verbose) |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 56 | return dso->long_name_len; |
Arnaldo Carvalho de Melo | 8a6c5b2 | 2010-07-20 14:42:52 -0300 | [diff] [blame] | 57 | |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 58 | return dso->short_name_len; |
Arnaldo Carvalho de Melo | 8a6c5b2 | 2010-07-20 14:42:52 -0300 | [diff] [blame] | 59 | } |
| 60 | |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 61 | bool dso__loaded(const struct dso *dso, enum map_type type) |
Arnaldo Carvalho de Melo | 3610583 | 2009-11-27 16:29:16 -0200 | [diff] [blame] | 62 | { |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 63 | return dso->loaded & (1 << type); |
Arnaldo Carvalho de Melo | 3610583 | 2009-11-27 16:29:16 -0200 | [diff] [blame] | 64 | } |
| 65 | |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 66 | bool dso__sorted_by_name(const struct dso *dso, enum map_type type) |
Arnaldo Carvalho de Melo | 79406cd | 2009-12-11 18:50:22 -0200 | [diff] [blame] | 67 | { |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 68 | return dso->sorted_by_name & (1 << type); |
Arnaldo Carvalho de Melo | 79406cd | 2009-12-11 18:50:22 -0200 | [diff] [blame] | 69 | } |
| 70 | |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 71 | static void dso__set_sorted_by_name(struct dso *dso, enum map_type type) |
Arnaldo Carvalho de Melo | 79406cd | 2009-12-11 18:50:22 -0200 | [diff] [blame] | 72 | { |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 73 | dso->sorted_by_name |= (1 << type); |
Arnaldo Carvalho de Melo | 79406cd | 2009-12-11 18:50:22 -0200 | [diff] [blame] | 74 | } |
| 75 | |
Arnaldo Carvalho de Melo | 36a3e64 | 2010-01-04 16:19:27 -0200 | [diff] [blame] | 76 | bool symbol_type__is_a(char symbol_type, enum map_type map_type) |
Arnaldo Carvalho de Melo | 6893d4e | 2009-12-11 14:50:37 -0200 | [diff] [blame] | 77 | { |
Anton Blanchard | 3187790 | 2011-08-24 16:40:16 +1000 | [diff] [blame] | 78 | symbol_type = toupper(symbol_type); |
| 79 | |
Arnaldo Carvalho de Melo | 6893d4e | 2009-12-11 14:50:37 -0200 | [diff] [blame] | 80 | switch (map_type) { |
| 81 | case MAP__FUNCTION: |
| 82 | return symbol_type == 'T' || symbol_type == 'W'; |
Arnaldo Carvalho de Melo | f1dfa0b | 2009-12-11 14:50:39 -0200 | [diff] [blame] | 83 | case MAP__VARIABLE: |
Anton Blanchard | 3187790 | 2011-08-24 16:40:16 +1000 | [diff] [blame] | 84 | return symbol_type == 'D'; |
Arnaldo Carvalho de Melo | 6893d4e | 2009-12-11 14:50:37 -0200 | [diff] [blame] | 85 | default: |
| 86 | return false; |
| 87 | } |
| 88 | } |
| 89 | |
Anton Blanchard | 694bf40 | 2011-08-24 16:40:17 +1000 | [diff] [blame] | 90 | static int prefix_underscores_count(const char *str) |
| 91 | { |
| 92 | const char *tail = str; |
| 93 | |
| 94 | while (*tail == '_') |
| 95 | tail++; |
| 96 | |
| 97 | return tail - str; |
| 98 | } |
| 99 | |
| 100 | #define SYMBOL_A 0 |
| 101 | #define SYMBOL_B 1 |
| 102 | |
| 103 | static int choose_best_symbol(struct symbol *syma, struct symbol *symb) |
| 104 | { |
| 105 | s64 a; |
| 106 | s64 b; |
| 107 | |
| 108 | /* Prefer a symbol with non zero length */ |
| 109 | a = syma->end - syma->start; |
| 110 | b = symb->end - symb->start; |
| 111 | if ((b == 0) && (a > 0)) |
| 112 | return SYMBOL_A; |
| 113 | else if ((a == 0) && (b > 0)) |
| 114 | return SYMBOL_B; |
| 115 | |
| 116 | /* Prefer a non weak symbol over a weak one */ |
| 117 | a = syma->binding == STB_WEAK; |
| 118 | b = symb->binding == STB_WEAK; |
| 119 | if (b && !a) |
| 120 | return SYMBOL_A; |
| 121 | if (a && !b) |
| 122 | return SYMBOL_B; |
| 123 | |
| 124 | /* Prefer a global symbol over a non global one */ |
| 125 | a = syma->binding == STB_GLOBAL; |
| 126 | b = symb->binding == STB_GLOBAL; |
| 127 | if (a && !b) |
| 128 | return SYMBOL_A; |
| 129 | if (b && !a) |
| 130 | return SYMBOL_B; |
| 131 | |
| 132 | /* Prefer a symbol with less underscores */ |
| 133 | a = prefix_underscores_count(syma->name); |
| 134 | b = prefix_underscores_count(symb->name); |
| 135 | if (b > a) |
| 136 | return SYMBOL_A; |
| 137 | else if (a > b) |
| 138 | return SYMBOL_B; |
| 139 | |
| 140 | /* If all else fails, choose the symbol with the longest name */ |
| 141 | if (strlen(syma->name) >= strlen(symb->name)) |
| 142 | return SYMBOL_A; |
| 143 | else |
| 144 | return SYMBOL_B; |
| 145 | } |
| 146 | |
| 147 | static void symbols__fixup_duplicate(struct rb_root *symbols) |
| 148 | { |
| 149 | struct rb_node *nd; |
| 150 | struct symbol *curr, *next; |
| 151 | |
| 152 | nd = rb_first(symbols); |
| 153 | |
| 154 | while (nd) { |
| 155 | curr = rb_entry(nd, struct symbol, rb_node); |
| 156 | again: |
| 157 | nd = rb_next(&curr->rb_node); |
| 158 | next = rb_entry(nd, struct symbol, rb_node); |
| 159 | |
| 160 | if (!nd) |
| 161 | break; |
| 162 | |
| 163 | if (curr->start != next->start) |
| 164 | continue; |
| 165 | |
| 166 | if (choose_best_symbol(curr, next) == SYMBOL_A) { |
| 167 | rb_erase(&next->rb_node, symbols); |
| 168 | goto again; |
| 169 | } else { |
| 170 | nd = rb_next(&curr->rb_node); |
| 171 | rb_erase(&curr->rb_node, symbols); |
| 172 | } |
| 173 | } |
| 174 | } |
| 175 | |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 176 | static void symbols__fixup_end(struct rb_root *symbols) |
Arnaldo Carvalho de Melo | af427bf | 2009-10-05 14:26:17 -0300 | [diff] [blame] | 177 | { |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 178 | struct rb_node *nd, *prevnd = rb_first(symbols); |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 179 | struct symbol *curr, *prev; |
Arnaldo Carvalho de Melo | af427bf | 2009-10-05 14:26:17 -0300 | [diff] [blame] | 180 | |
| 181 | if (prevnd == NULL) |
| 182 | return; |
| 183 | |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 184 | curr = rb_entry(prevnd, struct symbol, rb_node); |
| 185 | |
Arnaldo Carvalho de Melo | af427bf | 2009-10-05 14:26:17 -0300 | [diff] [blame] | 186 | for (nd = rb_next(prevnd); nd; nd = rb_next(nd)) { |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 187 | prev = curr; |
| 188 | curr = rb_entry(nd, struct symbol, rb_node); |
Arnaldo Carvalho de Melo | af427bf | 2009-10-05 14:26:17 -0300 | [diff] [blame] | 189 | |
Arnaldo Carvalho de Melo | 3b01a41 | 2010-12-22 01:08:36 -0200 | [diff] [blame] | 190 | if (prev->end == prev->start && prev->end != curr->start) |
Arnaldo Carvalho de Melo | af427bf | 2009-10-05 14:26:17 -0300 | [diff] [blame] | 191 | prev->end = curr->start - 1; |
Arnaldo Carvalho de Melo | af427bf | 2009-10-05 14:26:17 -0300 | [diff] [blame] | 192 | } |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 193 | |
| 194 | /* Last entry */ |
| 195 | if (curr->end == curr->start) |
| 196 | curr->end = roundup(curr->start, 4096); |
Arnaldo Carvalho de Melo | af427bf | 2009-10-05 14:26:17 -0300 | [diff] [blame] | 197 | } |
| 198 | |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 199 | static void __map_groups__fixup_end(struct map_groups *mg, enum map_type type) |
Arnaldo Carvalho de Melo | af427bf | 2009-10-05 14:26:17 -0300 | [diff] [blame] | 200 | { |
| 201 | struct map *prev, *curr; |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 202 | struct rb_node *nd, *prevnd = rb_first(&mg->maps[type]); |
Arnaldo Carvalho de Melo | af427bf | 2009-10-05 14:26:17 -0300 | [diff] [blame] | 203 | |
| 204 | if (prevnd == NULL) |
| 205 | return; |
| 206 | |
| 207 | curr = rb_entry(prevnd, struct map, rb_node); |
Arnaldo Carvalho de Melo | af427bf | 2009-10-05 14:26:17 -0300 | [diff] [blame] | 208 | |
| 209 | for (nd = rb_next(prevnd); nd; nd = rb_next(nd)) { |
| 210 | prev = curr; |
| 211 | curr = rb_entry(nd, struct map, rb_node); |
| 212 | prev->end = curr->start - 1; |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 213 | } |
Arnaldo Carvalho de Melo | 90c8321 | 2009-11-21 14:31:24 -0200 | [diff] [blame] | 214 | |
| 215 | /* |
| 216 | * We still haven't the actual symbols, so guess the |
| 217 | * last map final address. |
| 218 | */ |
Ian Munsie | 9d1faba | 2010-11-25 15:12:53 +1100 | [diff] [blame] | 219 | curr->end = ~0ULL; |
Arnaldo Carvalho de Melo | af427bf | 2009-10-05 14:26:17 -0300 | [diff] [blame] | 220 | } |
| 221 | |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 222 | static void map_groups__fixup_end(struct map_groups *mg) |
Arnaldo Carvalho de Melo | 23ea4a3 | 2009-11-27 16:29:19 -0200 | [diff] [blame] | 223 | { |
| 224 | int i; |
| 225 | for (i = 0; i < MAP__NR_TYPES; ++i) |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 226 | __map_groups__fixup_end(mg, i); |
Arnaldo Carvalho de Melo | 23ea4a3 | 2009-11-27 16:29:19 -0200 | [diff] [blame] | 227 | } |
| 228 | |
Arnaldo Carvalho de Melo | c408fed | 2010-08-05 12:59:47 -0300 | [diff] [blame] | 229 | static struct symbol *symbol__new(u64 start, u64 len, u8 binding, |
| 230 | const char *name) |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 231 | { |
Arnaldo Carvalho de Melo | 0085c954 | 2009-05-28 14:55:13 -0300 | [diff] [blame] | 232 | size_t namelen = strlen(name) + 1; |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 233 | struct symbol *sym = calloc(1, (symbol_conf.priv_size + |
| 234 | sizeof(*sym) + namelen)); |
| 235 | if (sym == NULL) |
Ingo Molnar | 0b73da3 | 2009-06-06 15:48:52 +0200 | [diff] [blame] | 236 | return NULL; |
| 237 | |
Arnaldo Carvalho de Melo | 75be6cf | 2009-12-15 20:04:39 -0200 | [diff] [blame] | 238 | if (symbol_conf.priv_size) |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 239 | sym = ((void *)sym) + symbol_conf.priv_size; |
Arnaldo Carvalho de Melo | 3647948 | 2009-11-24 12:05:16 -0200 | [diff] [blame] | 240 | |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 241 | sym->start = start; |
| 242 | sym->end = len ? start + len - 1 : start; |
| 243 | sym->binding = binding; |
| 244 | sym->namelen = namelen - 1; |
Arnaldo Carvalho de Melo | e420499 | 2009-10-20 14:25:40 -0200 | [diff] [blame] | 245 | |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 246 | pr_debug4("%s: %s %#" PRIx64 "-%#" PRIx64 "\n", |
| 247 | __func__, name, start, sym->end); |
| 248 | memcpy(sym->name, name, namelen); |
Arnaldo Carvalho de Melo | e420499 | 2009-10-20 14:25:40 -0200 | [diff] [blame] | 249 | |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 250 | return sym; |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 251 | } |
| 252 | |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 253 | void symbol__delete(struct symbol *sym) |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 254 | { |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 255 | free(((void *)sym) - symbol_conf.priv_size); |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 256 | } |
| 257 | |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 258 | static size_t symbol__fprintf(struct symbol *sym, FILE *fp) |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 259 | { |
Arnaldo Carvalho de Melo | 9486aa3 | 2011-01-22 20:37:02 -0200 | [diff] [blame] | 260 | return fprintf(fp, " %" PRIx64 "-%" PRIx64 " %c %s\n", |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 261 | sym->start, sym->end, |
| 262 | sym->binding == STB_GLOBAL ? 'g' : |
| 263 | sym->binding == STB_LOCAL ? 'l' : 'w', |
| 264 | sym->name); |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 265 | } |
| 266 | |
Akihiro Nagai | a978f2a | 2012-01-30 13:43:15 +0900 | [diff] [blame] | 267 | size_t symbol__fprintf_symname_offs(const struct symbol *sym, |
| 268 | const struct addr_location *al, FILE *fp) |
| 269 | { |
| 270 | unsigned long offset; |
| 271 | size_t length; |
| 272 | |
| 273 | if (sym && sym->name) { |
| 274 | length = fprintf(fp, "%s", sym->name); |
| 275 | if (al) { |
| 276 | offset = al->addr - sym->start; |
| 277 | length += fprintf(fp, "+0x%lx", offset); |
| 278 | } |
| 279 | return length; |
| 280 | } else |
| 281 | return fprintf(fp, "[unknown]"); |
| 282 | } |
| 283 | |
Akihiro Nagai | 547a92e | 2012-01-30 13:42:57 +0900 | [diff] [blame] | 284 | size_t symbol__fprintf_symname(const struct symbol *sym, FILE *fp) |
| 285 | { |
Akihiro Nagai | a978f2a | 2012-01-30 13:43:15 +0900 | [diff] [blame] | 286 | return symbol__fprintf_symname_offs(sym, NULL, fp); |
Akihiro Nagai | 547a92e | 2012-01-30 13:42:57 +0900 | [diff] [blame] | 287 | } |
| 288 | |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 289 | void dso__set_long_name(struct dso *dso, char *name) |
Arnaldo Carvalho de Melo | cfc10d3 | 2009-11-17 15:40:53 -0200 | [diff] [blame] | 290 | { |
Arnaldo Carvalho de Melo | ef6ae72 | 2009-11-20 20:51:29 -0200 | [diff] [blame] | 291 | if (name == NULL) |
| 292 | return; |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 293 | dso->long_name = name; |
| 294 | dso->long_name_len = strlen(name); |
Arnaldo Carvalho de Melo | cfc10d3 | 2009-11-17 15:40:53 -0200 | [diff] [blame] | 295 | } |
| 296 | |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 297 | static void dso__set_short_name(struct dso *dso, const char *name) |
Arnaldo Carvalho de Melo | b63be8d | 2010-03-15 15:03:50 -0300 | [diff] [blame] | 298 | { |
| 299 | if (name == NULL) |
| 300 | return; |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 301 | dso->short_name = name; |
| 302 | dso->short_name_len = strlen(name); |
Arnaldo Carvalho de Melo | b63be8d | 2010-03-15 15:03:50 -0300 | [diff] [blame] | 303 | } |
| 304 | |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 305 | static void dso__set_basename(struct dso *dso) |
Arnaldo Carvalho de Melo | cfc10d3 | 2009-11-17 15:40:53 -0200 | [diff] [blame] | 306 | { |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 307 | dso__set_short_name(dso, basename(dso->long_name)); |
Arnaldo Carvalho de Melo | cfc10d3 | 2009-11-17 15:40:53 -0200 | [diff] [blame] | 308 | } |
| 309 | |
Arnaldo Carvalho de Melo | 00a192b | 2009-10-30 16:28:24 -0200 | [diff] [blame] | 310 | struct dso *dso__new(const char *name) |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 311 | { |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 312 | struct dso *dso = calloc(1, sizeof(*dso) + strlen(name) + 1); |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 313 | |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 314 | if (dso != NULL) { |
Arnaldo Carvalho de Melo | 6a4694a | 2009-11-27 16:29:17 -0200 | [diff] [blame] | 315 | int i; |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 316 | strcpy(dso->name, name); |
| 317 | dso__set_long_name(dso, dso->name); |
| 318 | dso__set_short_name(dso, dso->name); |
Arnaldo Carvalho de Melo | 6a4694a | 2009-11-27 16:29:17 -0200 | [diff] [blame] | 319 | for (i = 0; i < MAP__NR_TYPES; ++i) |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 320 | dso->symbols[i] = dso->symbol_names[i] = RB_ROOT; |
| 321 | dso->symtab_type = SYMTAB__NOT_FOUND; |
| 322 | dso->loaded = 0; |
| 323 | dso->sorted_by_name = 0; |
| 324 | dso->has_build_id = 0; |
| 325 | dso->kernel = DSO_TYPE_USER; |
| 326 | INIT_LIST_HEAD(&dso->node); |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 327 | } |
| 328 | |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 329 | return dso; |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 330 | } |
| 331 | |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 332 | static void symbols__delete(struct rb_root *symbols) |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 333 | { |
| 334 | struct symbol *pos; |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 335 | struct rb_node *next = rb_first(symbols); |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 336 | |
| 337 | while (next) { |
| 338 | pos = rb_entry(next, struct symbol, rb_node); |
| 339 | next = rb_next(&pos->rb_node); |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 340 | rb_erase(&pos->rb_node, symbols); |
Arnaldo Carvalho de Melo | 00a192b | 2009-10-30 16:28:24 -0200 | [diff] [blame] | 341 | symbol__delete(pos); |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 342 | } |
| 343 | } |
| 344 | |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 345 | void dso__delete(struct dso *dso) |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 346 | { |
Arnaldo Carvalho de Melo | 6a4694a | 2009-11-27 16:29:17 -0200 | [diff] [blame] | 347 | int i; |
| 348 | for (i = 0; i < MAP__NR_TYPES; ++i) |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 349 | symbols__delete(&dso->symbols[i]); |
| 350 | if (dso->sname_alloc) |
| 351 | free((char *)dso->short_name); |
| 352 | if (dso->lname_alloc) |
| 353 | free(dso->long_name); |
| 354 | free(dso); |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 355 | } |
| 356 | |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 357 | void dso__set_build_id(struct dso *dso, void *build_id) |
Arnaldo Carvalho de Melo | 8d06367 | 2009-11-04 18:50:43 -0200 | [diff] [blame] | 358 | { |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 359 | memcpy(dso->build_id, build_id, sizeof(dso->build_id)); |
| 360 | dso->has_build_id = 1; |
Arnaldo Carvalho de Melo | 8d06367 | 2009-11-04 18:50:43 -0200 | [diff] [blame] | 361 | } |
| 362 | |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 363 | static void symbols__insert(struct rb_root *symbols, struct symbol *sym) |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 364 | { |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 365 | struct rb_node **p = &symbols->rb_node; |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 366 | struct rb_node *parent = NULL; |
Paul Mackerras | 9cffa8d | 2009-06-19 22:21:42 +1000 | [diff] [blame] | 367 | const u64 ip = sym->start; |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 368 | struct symbol *s; |
| 369 | |
| 370 | while (*p != NULL) { |
| 371 | parent = *p; |
| 372 | s = rb_entry(parent, struct symbol, rb_node); |
| 373 | if (ip < s->start) |
| 374 | p = &(*p)->rb_left; |
| 375 | else |
| 376 | p = &(*p)->rb_right; |
| 377 | } |
| 378 | rb_link_node(&sym->rb_node, parent, p); |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 379 | rb_insert_color(&sym->rb_node, symbols); |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 380 | } |
| 381 | |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 382 | static struct symbol *symbols__find(struct rb_root *symbols, u64 ip) |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 383 | { |
| 384 | struct rb_node *n; |
| 385 | |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 386 | if (symbols == NULL) |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 387 | return NULL; |
| 388 | |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 389 | n = symbols->rb_node; |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 390 | |
| 391 | while (n) { |
| 392 | struct symbol *s = rb_entry(n, struct symbol, rb_node); |
| 393 | |
| 394 | if (ip < s->start) |
| 395 | n = n->rb_left; |
| 396 | else if (ip > s->end) |
| 397 | n = n->rb_right; |
| 398 | else |
| 399 | return s; |
| 400 | } |
| 401 | |
| 402 | return NULL; |
| 403 | } |
| 404 | |
Arnaldo Carvalho de Melo | 79406cd | 2009-12-11 18:50:22 -0200 | [diff] [blame] | 405 | struct symbol_name_rb_node { |
| 406 | struct rb_node rb_node; |
| 407 | struct symbol sym; |
| 408 | }; |
| 409 | |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 410 | static void symbols__insert_by_name(struct rb_root *symbols, struct symbol *sym) |
Arnaldo Carvalho de Melo | 79406cd | 2009-12-11 18:50:22 -0200 | [diff] [blame] | 411 | { |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 412 | struct rb_node **p = &symbols->rb_node; |
Arnaldo Carvalho de Melo | 79406cd | 2009-12-11 18:50:22 -0200 | [diff] [blame] | 413 | struct rb_node *parent = NULL; |
Rabin Vincent | 02a9d03 | 2010-11-23 22:08:18 +0530 | [diff] [blame] | 414 | struct symbol_name_rb_node *symn, *s; |
| 415 | |
| 416 | symn = container_of(sym, struct symbol_name_rb_node, sym); |
Arnaldo Carvalho de Melo | 79406cd | 2009-12-11 18:50:22 -0200 | [diff] [blame] | 417 | |
| 418 | while (*p != NULL) { |
| 419 | parent = *p; |
| 420 | s = rb_entry(parent, struct symbol_name_rb_node, rb_node); |
| 421 | if (strcmp(sym->name, s->sym.name) < 0) |
| 422 | p = &(*p)->rb_left; |
| 423 | else |
| 424 | p = &(*p)->rb_right; |
| 425 | } |
| 426 | rb_link_node(&symn->rb_node, parent, p); |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 427 | rb_insert_color(&symn->rb_node, symbols); |
Arnaldo Carvalho de Melo | 79406cd | 2009-12-11 18:50:22 -0200 | [diff] [blame] | 428 | } |
| 429 | |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 430 | static void symbols__sort_by_name(struct rb_root *symbols, |
| 431 | struct rb_root *source) |
Arnaldo Carvalho de Melo | 79406cd | 2009-12-11 18:50:22 -0200 | [diff] [blame] | 432 | { |
| 433 | struct rb_node *nd; |
| 434 | |
| 435 | for (nd = rb_first(source); nd; nd = rb_next(nd)) { |
| 436 | struct symbol *pos = rb_entry(nd, struct symbol, rb_node); |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 437 | symbols__insert_by_name(symbols, pos); |
Arnaldo Carvalho de Melo | 79406cd | 2009-12-11 18:50:22 -0200 | [diff] [blame] | 438 | } |
| 439 | } |
| 440 | |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 441 | static struct symbol *symbols__find_by_name(struct rb_root *symbols, |
| 442 | const char *name) |
Arnaldo Carvalho de Melo | 79406cd | 2009-12-11 18:50:22 -0200 | [diff] [blame] | 443 | { |
| 444 | struct rb_node *n; |
| 445 | |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 446 | if (symbols == NULL) |
Arnaldo Carvalho de Melo | 79406cd | 2009-12-11 18:50:22 -0200 | [diff] [blame] | 447 | return NULL; |
| 448 | |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 449 | n = symbols->rb_node; |
Arnaldo Carvalho de Melo | 79406cd | 2009-12-11 18:50:22 -0200 | [diff] [blame] | 450 | |
| 451 | while (n) { |
| 452 | struct symbol_name_rb_node *s; |
| 453 | int cmp; |
| 454 | |
| 455 | s = rb_entry(n, struct symbol_name_rb_node, rb_node); |
| 456 | cmp = strcmp(name, s->sym.name); |
| 457 | |
| 458 | if (cmp < 0) |
| 459 | n = n->rb_left; |
| 460 | else if (cmp > 0) |
| 461 | n = n->rb_right; |
| 462 | else |
| 463 | return &s->sym; |
| 464 | } |
| 465 | |
| 466 | return NULL; |
| 467 | } |
| 468 | |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 469 | struct symbol *dso__find_symbol(struct dso *dso, |
Arnaldo Carvalho de Melo | 79406cd | 2009-12-11 18:50:22 -0200 | [diff] [blame] | 470 | enum map_type type, u64 addr) |
Arnaldo Carvalho de Melo | fcf1203 | 2009-11-24 13:01:52 -0200 | [diff] [blame] | 471 | { |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 472 | return symbols__find(&dso->symbols[type], addr); |
Arnaldo Carvalho de Melo | fcf1203 | 2009-11-24 13:01:52 -0200 | [diff] [blame] | 473 | } |
| 474 | |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 475 | struct symbol *dso__find_symbol_by_name(struct dso *dso, enum map_type type, |
Arnaldo Carvalho de Melo | 79406cd | 2009-12-11 18:50:22 -0200 | [diff] [blame] | 476 | const char *name) |
| 477 | { |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 478 | return symbols__find_by_name(&dso->symbol_names[type], name); |
Arnaldo Carvalho de Melo | 79406cd | 2009-12-11 18:50:22 -0200 | [diff] [blame] | 479 | } |
| 480 | |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 481 | void dso__sort_by_name(struct dso *dso, enum map_type type) |
Arnaldo Carvalho de Melo | 79406cd | 2009-12-11 18:50:22 -0200 | [diff] [blame] | 482 | { |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 483 | dso__set_sorted_by_name(dso, type); |
| 484 | return symbols__sort_by_name(&dso->symbol_names[type], |
| 485 | &dso->symbols[type]); |
Arnaldo Carvalho de Melo | 79406cd | 2009-12-11 18:50:22 -0200 | [diff] [blame] | 486 | } |
| 487 | |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 488 | int build_id__sprintf(const u8 *build_id, int len, char *bf) |
Arnaldo Carvalho de Melo | 8d06367 | 2009-11-04 18:50:43 -0200 | [diff] [blame] | 489 | { |
| 490 | char *bid = bf; |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 491 | const u8 *raw = build_id; |
Arnaldo Carvalho de Melo | 8d06367 | 2009-11-04 18:50:43 -0200 | [diff] [blame] | 492 | int i; |
| 493 | |
| 494 | for (i = 0; i < len; ++i) { |
| 495 | sprintf(bid, "%02x", *raw); |
| 496 | ++raw; |
| 497 | bid += 2; |
| 498 | } |
| 499 | |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 500 | return raw - build_id; |
Arnaldo Carvalho de Melo | 8d06367 | 2009-11-04 18:50:43 -0200 | [diff] [blame] | 501 | } |
| 502 | |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 503 | size_t dso__fprintf_buildid(struct dso *dso, FILE *fp) |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 504 | { |
Arnaldo Carvalho de Melo | 8d06367 | 2009-11-04 18:50:43 -0200 | [diff] [blame] | 505 | char sbuild_id[BUILD_ID_SIZE * 2 + 1]; |
Arnaldo Carvalho de Melo | 8d06367 | 2009-11-04 18:50:43 -0200 | [diff] [blame] | 506 | |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 507 | build_id__sprintf(dso->build_id, sizeof(dso->build_id), sbuild_id); |
Arnaldo Carvalho de Melo | 9e03eb2 | 2009-11-16 16:32:44 -0200 | [diff] [blame] | 508 | return fprintf(fp, "%s", sbuild_id); |
| 509 | } |
| 510 | |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 511 | size_t dso__fprintf_symbols_by_name(struct dso *dso, |
| 512 | enum map_type type, FILE *fp) |
Srikar Dronamraju | 90f18e6 | 2010-08-25 19:13:29 +0530 | [diff] [blame] | 513 | { |
| 514 | size_t ret = 0; |
| 515 | struct rb_node *nd; |
| 516 | struct symbol_name_rb_node *pos; |
| 517 | |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 518 | for (nd = rb_first(&dso->symbol_names[type]); nd; nd = rb_next(nd)) { |
Srikar Dronamraju | 90f18e6 | 2010-08-25 19:13:29 +0530 | [diff] [blame] | 519 | pos = rb_entry(nd, struct symbol_name_rb_node, rb_node); |
| 520 | fprintf(fp, "%s\n", pos->sym.name); |
| 521 | } |
| 522 | |
| 523 | return ret; |
| 524 | } |
| 525 | |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 526 | size_t dso__fprintf(struct dso *dso, enum map_type type, FILE *fp) |
Arnaldo Carvalho de Melo | 9e03eb2 | 2009-11-16 16:32:44 -0200 | [diff] [blame] | 527 | { |
| 528 | struct rb_node *nd; |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 529 | size_t ret = fprintf(fp, "dso: %s (", dso->short_name); |
Arnaldo Carvalho de Melo | 9e03eb2 | 2009-11-16 16:32:44 -0200 | [diff] [blame] | 530 | |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 531 | if (dso->short_name != dso->long_name) |
| 532 | ret += fprintf(fp, "%s, ", dso->long_name); |
Arnaldo Carvalho de Melo | 3846df2 | 2010-02-22 16:15:39 -0300 | [diff] [blame] | 533 | ret += fprintf(fp, "%s, %sloaded, ", map_type__name[type], |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 534 | dso->loaded ? "" : "NOT "); |
| 535 | ret += dso__fprintf_buildid(dso, fp); |
Arnaldo Carvalho de Melo | 6a4694a | 2009-11-27 16:29:17 -0200 | [diff] [blame] | 536 | ret += fprintf(fp, ")\n"); |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 537 | for (nd = rb_first(&dso->symbols[type]); nd; nd = rb_next(nd)) { |
Arnaldo Carvalho de Melo | 95011c6 | 2009-11-27 16:29:20 -0200 | [diff] [blame] | 538 | struct symbol *pos = rb_entry(nd, struct symbol, rb_node); |
| 539 | ret += symbol__fprintf(pos, fp); |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 540 | } |
| 541 | |
| 542 | return ret; |
| 543 | } |
| 544 | |
Arnaldo Carvalho de Melo | 9e20144 | 2010-01-14 18:30:06 -0200 | [diff] [blame] | 545 | int kallsyms__parse(const char *filename, void *arg, |
| 546 | int (*process_symbol)(void *arg, const char *name, |
Arnaldo Carvalho de Melo | 3b01a41 | 2010-12-22 01:08:36 -0200 | [diff] [blame] | 547 | char type, u64 start, u64 end)) |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 548 | { |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 549 | char *line = NULL; |
| 550 | size_t n; |
Arnaldo Carvalho de Melo | 3b01a41 | 2010-12-22 01:08:36 -0200 | [diff] [blame] | 551 | int err = -1; |
Arnaldo Carvalho de Melo | 9e20144 | 2010-01-14 18:30:06 -0200 | [diff] [blame] | 552 | FILE *file = fopen(filename, "r"); |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 553 | |
| 554 | if (file == NULL) |
| 555 | goto out_failure; |
| 556 | |
Arnaldo Carvalho de Melo | 3b01a41 | 2010-12-22 01:08:36 -0200 | [diff] [blame] | 557 | err = 0; |
| 558 | |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 559 | while (!feof(file)) { |
Paul Mackerras | 9cffa8d | 2009-06-19 22:21:42 +1000 | [diff] [blame] | 560 | u64 start; |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 561 | int line_len, len; |
| 562 | char symbol_type; |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 563 | char *symbol_name; |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 564 | |
| 565 | line_len = getline(&line, &n, file); |
Zhang, Yanmin | a1645ce | 2010-04-19 13:32:50 +0800 | [diff] [blame] | 566 | if (line_len < 0 || !line) |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 567 | break; |
| 568 | |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 569 | line[--line_len] = '\0'; /* \n */ |
| 570 | |
Arnaldo Carvalho de Melo | a0055ae | 2009-06-01 17:50:19 -0300 | [diff] [blame] | 571 | len = hex2u64(line, &start); |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 572 | |
| 573 | len++; |
| 574 | if (len + 2 >= line_len) |
| 575 | continue; |
| 576 | |
Anton Blanchard | 3187790 | 2011-08-24 16:40:16 +1000 | [diff] [blame] | 577 | symbol_type = line[len]; |
Arnaldo Carvalho de Melo | 3b01a41 | 2010-12-22 01:08:36 -0200 | [diff] [blame] | 578 | len += 2; |
| 579 | symbol_name = line + len; |
| 580 | len = line_len - len; |
Arnaldo Carvalho de Melo | af427bf | 2009-10-05 14:26:17 -0300 | [diff] [blame] | 581 | |
Arnaldo Carvalho de Melo | 3b01a41 | 2010-12-22 01:08:36 -0200 | [diff] [blame] | 582 | if (len >= KSYM_NAME_LEN) { |
| 583 | err = -1; |
Arnaldo Carvalho de Melo | 682b335 | 2010-01-04 16:19:26 -0200 | [diff] [blame] | 584 | break; |
Arnaldo Carvalho de Melo | 3b01a41 | 2010-12-22 01:08:36 -0200 | [diff] [blame] | 585 | } |
| 586 | |
Anton Blanchard | 3f5a427 | 2011-08-24 16:40:15 +1000 | [diff] [blame] | 587 | /* |
| 588 | * module symbols are not sorted so we add all |
| 589 | * symbols with zero length and rely on |
| 590 | * symbols__fixup_end() to fix it up. |
| 591 | */ |
| 592 | err = process_symbol(arg, symbol_name, |
| 593 | symbol_type, start, start); |
| 594 | if (err) |
| 595 | break; |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 596 | } |
| 597 | |
| 598 | free(line); |
| 599 | fclose(file); |
Arnaldo Carvalho de Melo | 682b335 | 2010-01-04 16:19:26 -0200 | [diff] [blame] | 600 | return err; |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 601 | |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 602 | out_failure: |
| 603 | return -1; |
| 604 | } |
| 605 | |
Arnaldo Carvalho de Melo | 682b335 | 2010-01-04 16:19:26 -0200 | [diff] [blame] | 606 | struct process_kallsyms_args { |
| 607 | struct map *map; |
| 608 | struct dso *dso; |
| 609 | }; |
| 610 | |
Arnaldo Carvalho de Melo | c408fed | 2010-08-05 12:59:47 -0300 | [diff] [blame] | 611 | static u8 kallsyms2elf_type(char type) |
| 612 | { |
| 613 | if (type == 'W') |
| 614 | return STB_WEAK; |
| 615 | |
| 616 | return isupper(type) ? STB_GLOBAL : STB_LOCAL; |
| 617 | } |
| 618 | |
Arnaldo Carvalho de Melo | 682b335 | 2010-01-04 16:19:26 -0200 | [diff] [blame] | 619 | static int map__process_kallsym_symbol(void *arg, const char *name, |
Arnaldo Carvalho de Melo | 3b01a41 | 2010-12-22 01:08:36 -0200 | [diff] [blame] | 620 | char type, u64 start, u64 end) |
Arnaldo Carvalho de Melo | 682b335 | 2010-01-04 16:19:26 -0200 | [diff] [blame] | 621 | { |
| 622 | struct symbol *sym; |
| 623 | struct process_kallsyms_args *a = arg; |
| 624 | struct rb_root *root = &a->dso->symbols[a->map->type]; |
| 625 | |
| 626 | if (!symbol_type__is_a(type, a->map->type)) |
| 627 | return 0; |
| 628 | |
Arnaldo Carvalho de Melo | 3b01a41 | 2010-12-22 01:08:36 -0200 | [diff] [blame] | 629 | sym = symbol__new(start, end - start + 1, |
| 630 | kallsyms2elf_type(type), name); |
Arnaldo Carvalho de Melo | 682b335 | 2010-01-04 16:19:26 -0200 | [diff] [blame] | 631 | if (sym == NULL) |
| 632 | return -ENOMEM; |
| 633 | /* |
| 634 | * We will pass the symbols to the filter later, in |
| 635 | * map__split_kallsyms, when we have split the maps per module |
| 636 | */ |
| 637 | symbols__insert(root, sym); |
Zhang, Yanmin | a1645ce | 2010-04-19 13:32:50 +0800 | [diff] [blame] | 638 | |
Arnaldo Carvalho de Melo | 682b335 | 2010-01-04 16:19:26 -0200 | [diff] [blame] | 639 | return 0; |
| 640 | } |
| 641 | |
| 642 | /* |
| 643 | * Loads the function entries in /proc/kallsyms into kernel_map->dso, |
| 644 | * so that we can in the next step set the symbol ->end address and then |
| 645 | * call kernel_maps__split_kallsyms. |
| 646 | */ |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 647 | static int dso__load_all_kallsyms(struct dso *dso, const char *filename, |
Arnaldo Carvalho de Melo | 9e20144 | 2010-01-14 18:30:06 -0200 | [diff] [blame] | 648 | struct map *map) |
Arnaldo Carvalho de Melo | 682b335 | 2010-01-04 16:19:26 -0200 | [diff] [blame] | 649 | { |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 650 | struct process_kallsyms_args args = { .map = map, .dso = dso, }; |
Arnaldo Carvalho de Melo | 9e20144 | 2010-01-14 18:30:06 -0200 | [diff] [blame] | 651 | return kallsyms__parse(filename, &args, map__process_kallsym_symbol); |
Arnaldo Carvalho de Melo | 682b335 | 2010-01-04 16:19:26 -0200 | [diff] [blame] | 652 | } |
| 653 | |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 654 | /* |
| 655 | * Split the symbols into maps, making sure there are no overlaps, i.e. the |
| 656 | * kernel range is broken in several maps, named [kernel].N, as we don't have |
| 657 | * the original ELF section names vmlinux have. |
| 658 | */ |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 659 | static int dso__split_kallsyms(struct dso *dso, struct map *map, |
Arnaldo Carvalho de Melo | 9de89fe | 2010-02-03 16:52:00 -0200 | [diff] [blame] | 660 | symbol_filter_t filter) |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 661 | { |
Arnaldo Carvalho de Melo | 9de89fe | 2010-02-03 16:52:00 -0200 | [diff] [blame] | 662 | struct map_groups *kmaps = map__kmap(map)->kmaps; |
Arnaldo Carvalho de Melo | 23346f2 | 2010-04-27 21:17:50 -0300 | [diff] [blame] | 663 | struct machine *machine = kmaps->machine; |
Arnaldo Carvalho de Melo | 4e06255 | 2009-11-27 16:29:18 -0200 | [diff] [blame] | 664 | struct map *curr_map = map; |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 665 | struct symbol *pos; |
Arnaldo Carvalho de Melo | 8a95331 | 2010-11-29 12:44:15 -0200 | [diff] [blame] | 666 | int count = 0, moved = 0; |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 667 | struct rb_root *root = &dso->symbols[map->type]; |
Arnaldo Carvalho de Melo | 4e06255 | 2009-11-27 16:29:18 -0200 | [diff] [blame] | 668 | struct rb_node *next = rb_first(root); |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 669 | int kernel_range = 0; |
| 670 | |
| 671 | while (next) { |
| 672 | char *module; |
| 673 | |
| 674 | pos = rb_entry(next, struct symbol, rb_node); |
| 675 | next = rb_next(&pos->rb_node); |
| 676 | |
| 677 | module = strchr(pos->name, '\t'); |
| 678 | if (module) { |
Arnaldo Carvalho de Melo | 75be6cf | 2009-12-15 20:04:39 -0200 | [diff] [blame] | 679 | if (!symbol_conf.use_modules) |
Arnaldo Carvalho de Melo | 1de8e24 | 2009-11-27 16:29:21 -0200 | [diff] [blame] | 680 | goto discard_symbol; |
| 681 | |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 682 | *module++ = '\0'; |
| 683 | |
Arnaldo Carvalho de Melo | b7cece7 | 2010-01-13 13:22:17 -0200 | [diff] [blame] | 684 | if (strcmp(curr_map->dso->short_name, module)) { |
Zhang, Yanmin | a1645ce | 2010-04-19 13:32:50 +0800 | [diff] [blame] | 685 | if (curr_map != map && |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 686 | dso->kernel == DSO_TYPE_GUEST_KERNEL && |
Arnaldo Carvalho de Melo | 23346f2 | 2010-04-27 21:17:50 -0300 | [diff] [blame] | 687 | machine__is_default_guest(machine)) { |
Zhang, Yanmin | a1645ce | 2010-04-19 13:32:50 +0800 | [diff] [blame] | 688 | /* |
| 689 | * We assume all symbols of a module are |
| 690 | * continuous in * kallsyms, so curr_map |
| 691 | * points to a module and all its |
| 692 | * symbols are in its kmap. Mark it as |
| 693 | * loaded. |
| 694 | */ |
| 695 | dso__set_loaded(curr_map->dso, |
| 696 | curr_map->type); |
Arnaldo Carvalho de Melo | af427bf | 2009-10-05 14:26:17 -0300 | [diff] [blame] | 697 | } |
Arnaldo Carvalho de Melo | b7cece7 | 2010-01-13 13:22:17 -0200 | [diff] [blame] | 698 | |
Zhang, Yanmin | a1645ce | 2010-04-19 13:32:50 +0800 | [diff] [blame] | 699 | curr_map = map_groups__find_by_name(kmaps, |
| 700 | map->type, module); |
| 701 | if (curr_map == NULL) { |
Arnaldo Carvalho de Melo | 2f51903 | 2010-05-17 17:57:59 -0300 | [diff] [blame] | 702 | pr_debug("%s/proc/{kallsyms,modules} " |
Zhang, Yanmin | a1645ce | 2010-04-19 13:32:50 +0800 | [diff] [blame] | 703 | "inconsistency while looking " |
| 704 | "for \"%s\" module!\n", |
Arnaldo Carvalho de Melo | 23346f2 | 2010-04-27 21:17:50 -0300 | [diff] [blame] | 705 | machine->root_dir, module); |
Zhang, Yanmin | a1645ce | 2010-04-19 13:32:50 +0800 | [diff] [blame] | 706 | curr_map = map; |
| 707 | goto discard_symbol; |
| 708 | } |
| 709 | |
| 710 | if (curr_map->dso->loaded && |
Arnaldo Carvalho de Melo | 23346f2 | 2010-04-27 21:17:50 -0300 | [diff] [blame] | 711 | !machine__is_default_guest(machine)) |
Arnaldo Carvalho de Melo | b7cece7 | 2010-01-13 13:22:17 -0200 | [diff] [blame] | 712 | goto discard_symbol; |
Arnaldo Carvalho de Melo | af427bf | 2009-10-05 14:26:17 -0300 | [diff] [blame] | 713 | } |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 714 | /* |
| 715 | * So that we look just like we get from .ko files, |
| 716 | * i.e. not prelinked, relative to map->start. |
| 717 | */ |
Arnaldo Carvalho de Melo | 4e06255 | 2009-11-27 16:29:18 -0200 | [diff] [blame] | 718 | pos->start = curr_map->map_ip(curr_map, pos->start); |
| 719 | pos->end = curr_map->map_ip(curr_map, pos->end); |
| 720 | } else if (curr_map != map) { |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 721 | char dso_name[PATH_MAX]; |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 722 | struct dso *ndso; |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 723 | |
Arnaldo Carvalho de Melo | 8a95331 | 2010-11-29 12:44:15 -0200 | [diff] [blame] | 724 | if (count == 0) { |
| 725 | curr_map = map; |
| 726 | goto filter_symbol; |
| 727 | } |
| 728 | |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 729 | if (dso->kernel == DSO_TYPE_GUEST_KERNEL) |
Zhang, Yanmin | a1645ce | 2010-04-19 13:32:50 +0800 | [diff] [blame] | 730 | snprintf(dso_name, sizeof(dso_name), |
| 731 | "[guest.kernel].%d", |
| 732 | kernel_range++); |
| 733 | else |
| 734 | snprintf(dso_name, sizeof(dso_name), |
| 735 | "[kernel].%d", |
| 736 | kernel_range++); |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 737 | |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 738 | ndso = dso__new(dso_name); |
| 739 | if (ndso == NULL) |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 740 | return -1; |
| 741 | |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 742 | ndso->kernel = dso->kernel; |
Zhang, Yanmin | a1645ce | 2010-04-19 13:32:50 +0800 | [diff] [blame] | 743 | |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 744 | curr_map = map__new2(pos->start, ndso, map->type); |
Zhang, Yanmin | 37fe5fc | 2010-02-25 11:00:51 +0800 | [diff] [blame] | 745 | if (curr_map == NULL) { |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 746 | dso__delete(ndso); |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 747 | return -1; |
| 748 | } |
| 749 | |
Arnaldo Carvalho de Melo | 4e06255 | 2009-11-27 16:29:18 -0200 | [diff] [blame] | 750 | curr_map->map_ip = curr_map->unmap_ip = identity__map_ip; |
Arnaldo Carvalho de Melo | 9de89fe | 2010-02-03 16:52:00 -0200 | [diff] [blame] | 751 | map_groups__insert(kmaps, curr_map); |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 752 | ++kernel_range; |
| 753 | } |
Arnaldo Carvalho de Melo | 8a95331 | 2010-11-29 12:44:15 -0200 | [diff] [blame] | 754 | filter_symbol: |
Arnaldo Carvalho de Melo | 4e06255 | 2009-11-27 16:29:18 -0200 | [diff] [blame] | 755 | if (filter && filter(curr_map, pos)) { |
Arnaldo Carvalho de Melo | 1de8e24 | 2009-11-27 16:29:21 -0200 | [diff] [blame] | 756 | discard_symbol: rb_erase(&pos->rb_node, root); |
Arnaldo Carvalho de Melo | 00a192b | 2009-10-30 16:28:24 -0200 | [diff] [blame] | 757 | symbol__delete(pos); |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 758 | } else { |
Arnaldo Carvalho de Melo | 4e06255 | 2009-11-27 16:29:18 -0200 | [diff] [blame] | 759 | if (curr_map != map) { |
| 760 | rb_erase(&pos->rb_node, root); |
| 761 | symbols__insert(&curr_map->dso->symbols[curr_map->type], pos); |
Arnaldo Carvalho de Melo | 8a95331 | 2010-11-29 12:44:15 -0200 | [diff] [blame] | 762 | ++moved; |
| 763 | } else |
| 764 | ++count; |
Mike Galbraith | 9974f49 | 2009-07-02 08:05:58 +0200 | [diff] [blame] | 765 | } |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 766 | } |
| 767 | |
Zhang, Yanmin | a1645ce | 2010-04-19 13:32:50 +0800 | [diff] [blame] | 768 | if (curr_map != map && |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 769 | dso->kernel == DSO_TYPE_GUEST_KERNEL && |
Arnaldo Carvalho de Melo | 23346f2 | 2010-04-27 21:17:50 -0300 | [diff] [blame] | 770 | machine__is_default_guest(kmaps->machine)) { |
Zhang, Yanmin | a1645ce | 2010-04-19 13:32:50 +0800 | [diff] [blame] | 771 | dso__set_loaded(curr_map->dso, curr_map->type); |
| 772 | } |
| 773 | |
Arnaldo Carvalho de Melo | 8a95331 | 2010-11-29 12:44:15 -0200 | [diff] [blame] | 774 | return count + moved; |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 775 | } |
| 776 | |
Arnaldo Carvalho de Melo | ec80fde | 2011-05-26 09:53:51 -0300 | [diff] [blame] | 777 | static bool symbol__restricted_filename(const char *filename, |
| 778 | const char *restricted_filename) |
| 779 | { |
| 780 | bool restricted = false; |
| 781 | |
| 782 | if (symbol_conf.kptr_restrict) { |
| 783 | char *r = realpath(filename, NULL); |
| 784 | |
| 785 | if (r != NULL) { |
| 786 | restricted = strcmp(r, restricted_filename) == 0; |
| 787 | free(r); |
| 788 | return restricted; |
| 789 | } |
| 790 | } |
| 791 | |
| 792 | return restricted; |
| 793 | } |
| 794 | |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 795 | int dso__load_kallsyms(struct dso *dso, const char *filename, |
Arnaldo Carvalho de Melo | 9de89fe | 2010-02-03 16:52:00 -0200 | [diff] [blame] | 796 | struct map *map, symbol_filter_t filter) |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 797 | { |
Arnaldo Carvalho de Melo | ec80fde | 2011-05-26 09:53:51 -0300 | [diff] [blame] | 798 | if (symbol__restricted_filename(filename, "/proc/kallsyms")) |
| 799 | return -1; |
| 800 | |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 801 | if (dso__load_all_kallsyms(dso, filename, map) < 0) |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 802 | return -1; |
| 803 | |
Anton Blanchard | 694bf40 | 2011-08-24 16:40:17 +1000 | [diff] [blame] | 804 | symbols__fixup_duplicate(&dso->symbols[map->type]); |
Anton Blanchard | 3f5a427 | 2011-08-24 16:40:15 +1000 | [diff] [blame] | 805 | symbols__fixup_end(&dso->symbols[map->type]); |
| 806 | |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 807 | if (dso->kernel == DSO_TYPE_GUEST_KERNEL) |
| 808 | dso->symtab_type = SYMTAB__GUEST_KALLSYMS; |
Zhang, Yanmin | a1645ce | 2010-04-19 13:32:50 +0800 | [diff] [blame] | 809 | else |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 810 | dso->symtab_type = SYMTAB__KALLSYMS; |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 811 | |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 812 | return dso__split_kallsyms(dso, map, filter); |
Arnaldo Carvalho de Melo | af427bf | 2009-10-05 14:26:17 -0300 | [diff] [blame] | 813 | } |
| 814 | |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 815 | static int dso__load_perf_map(struct dso *dso, struct map *map, |
Arnaldo Carvalho de Melo | 6beba7a | 2009-10-21 17:34:06 -0200 | [diff] [blame] | 816 | symbol_filter_t filter) |
Pekka Enberg | 80d496b | 2009-06-08 21:12:48 +0300 | [diff] [blame] | 817 | { |
| 818 | char *line = NULL; |
| 819 | size_t n; |
| 820 | FILE *file; |
| 821 | int nr_syms = 0; |
| 822 | |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 823 | file = fopen(dso->long_name, "r"); |
Pekka Enberg | 80d496b | 2009-06-08 21:12:48 +0300 | [diff] [blame] | 824 | if (file == NULL) |
| 825 | goto out_failure; |
| 826 | |
| 827 | while (!feof(file)) { |
Paul Mackerras | 9cffa8d | 2009-06-19 22:21:42 +1000 | [diff] [blame] | 828 | u64 start, size; |
Pekka Enberg | 80d496b | 2009-06-08 21:12:48 +0300 | [diff] [blame] | 829 | struct symbol *sym; |
| 830 | int line_len, len; |
| 831 | |
| 832 | line_len = getline(&line, &n, file); |
| 833 | if (line_len < 0) |
| 834 | break; |
| 835 | |
| 836 | if (!line) |
| 837 | goto out_failure; |
| 838 | |
| 839 | line[--line_len] = '\0'; /* \n */ |
| 840 | |
| 841 | len = hex2u64(line, &start); |
| 842 | |
| 843 | len++; |
| 844 | if (len + 2 >= line_len) |
| 845 | continue; |
| 846 | |
| 847 | len += hex2u64(line + len, &size); |
| 848 | |
| 849 | len++; |
| 850 | if (len + 2 >= line_len) |
| 851 | continue; |
| 852 | |
Arnaldo Carvalho de Melo | c408fed | 2010-08-05 12:59:47 -0300 | [diff] [blame] | 853 | sym = symbol__new(start, size, STB_GLOBAL, line + len); |
Pekka Enberg | 80d496b | 2009-06-08 21:12:48 +0300 | [diff] [blame] | 854 | |
| 855 | if (sym == NULL) |
| 856 | goto out_delete_line; |
| 857 | |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 858 | if (filter && filter(map, sym)) |
Arnaldo Carvalho de Melo | 00a192b | 2009-10-30 16:28:24 -0200 | [diff] [blame] | 859 | symbol__delete(sym); |
Pekka Enberg | 80d496b | 2009-06-08 21:12:48 +0300 | [diff] [blame] | 860 | else { |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 861 | symbols__insert(&dso->symbols[map->type], sym); |
Pekka Enberg | 80d496b | 2009-06-08 21:12:48 +0300 | [diff] [blame] | 862 | nr_syms++; |
| 863 | } |
| 864 | } |
| 865 | |
| 866 | free(line); |
| 867 | fclose(file); |
| 868 | |
| 869 | return nr_syms; |
| 870 | |
| 871 | out_delete_line: |
| 872 | free(line); |
| 873 | out_failure: |
| 874 | return -1; |
| 875 | } |
| 876 | |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 877 | /** |
| 878 | * elf_symtab__for_each_symbol - iterate thru all the symbols |
| 879 | * |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 880 | * @syms: struct elf_symtab instance to iterate |
Ingo Molnar | 83a0944 | 2009-08-15 12:26:57 +0200 | [diff] [blame] | 881 | * @idx: uint32_t idx |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 882 | * @sym: GElf_Sym iterator |
| 883 | */ |
Ingo Molnar | 83a0944 | 2009-08-15 12:26:57 +0200 | [diff] [blame] | 884 | #define elf_symtab__for_each_symbol(syms, nr_syms, idx, sym) \ |
| 885 | for (idx = 0, gelf_getsym(syms, idx, &sym);\ |
| 886 | idx < nr_syms; \ |
| 887 | idx++, gelf_getsym(syms, idx, &sym)) |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 888 | |
| 889 | static inline uint8_t elf_sym__type(const GElf_Sym *sym) |
| 890 | { |
| 891 | return GELF_ST_TYPE(sym->st_info); |
| 892 | } |
| 893 | |
| 894 | static inline int elf_sym__is_function(const GElf_Sym *sym) |
| 895 | { |
| 896 | return elf_sym__type(sym) == STT_FUNC && |
| 897 | sym->st_name != 0 && |
Arnaldo Carvalho de Melo | 8183313 | 2009-10-05 23:35:03 -0300 | [diff] [blame] | 898 | sym->st_shndx != SHN_UNDEF; |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 899 | } |
| 900 | |
Arnaldo Carvalho de Melo | f1dfa0b | 2009-12-11 14:50:39 -0200 | [diff] [blame] | 901 | static inline bool elf_sym__is_object(const GElf_Sym *sym) |
| 902 | { |
| 903 | return elf_sym__type(sym) == STT_OBJECT && |
| 904 | sym->st_name != 0 && |
| 905 | sym->st_shndx != SHN_UNDEF; |
| 906 | } |
| 907 | |
Mike Galbraith | 6cfcc53 | 2009-07-02 08:08:36 +0200 | [diff] [blame] | 908 | static inline int elf_sym__is_label(const GElf_Sym *sym) |
| 909 | { |
| 910 | return elf_sym__type(sym) == STT_NOTYPE && |
| 911 | sym->st_name != 0 && |
| 912 | sym->st_shndx != SHN_UNDEF && |
| 913 | sym->st_shndx != SHN_ABS; |
| 914 | } |
| 915 | |
| 916 | static inline const char *elf_sec__name(const GElf_Shdr *shdr, |
| 917 | const Elf_Data *secstrs) |
| 918 | { |
| 919 | return secstrs->d_buf + shdr->sh_name; |
| 920 | } |
| 921 | |
| 922 | static inline int elf_sec__is_text(const GElf_Shdr *shdr, |
| 923 | const Elf_Data *secstrs) |
| 924 | { |
| 925 | return strstr(elf_sec__name(shdr, secstrs), "text") != NULL; |
| 926 | } |
| 927 | |
Arnaldo Carvalho de Melo | f1dfa0b | 2009-12-11 14:50:39 -0200 | [diff] [blame] | 928 | static inline bool elf_sec__is_data(const GElf_Shdr *shdr, |
| 929 | const Elf_Data *secstrs) |
| 930 | { |
| 931 | return strstr(elf_sec__name(shdr, secstrs), "data") != NULL; |
| 932 | } |
| 933 | |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 934 | static inline const char *elf_sym__name(const GElf_Sym *sym, |
| 935 | const Elf_Data *symstrs) |
| 936 | { |
| 937 | return symstrs->d_buf + sym->st_name; |
| 938 | } |
| 939 | |
| 940 | static Elf_Scn *elf_section_by_name(Elf *elf, GElf_Ehdr *ep, |
| 941 | GElf_Shdr *shp, const char *name, |
Ingo Molnar | 83a0944 | 2009-08-15 12:26:57 +0200 | [diff] [blame] | 942 | size_t *idx) |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 943 | { |
| 944 | Elf_Scn *sec = NULL; |
| 945 | size_t cnt = 1; |
| 946 | |
| 947 | while ((sec = elf_nextscn(elf, sec)) != NULL) { |
| 948 | char *str; |
| 949 | |
| 950 | gelf_getshdr(sec, shp); |
| 951 | str = elf_strptr(elf, ep->e_shstrndx, shp->sh_name); |
| 952 | if (!strcmp(name, str)) { |
Ingo Molnar | 83a0944 | 2009-08-15 12:26:57 +0200 | [diff] [blame] | 953 | if (idx) |
| 954 | *idx = cnt; |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 955 | break; |
| 956 | } |
| 957 | ++cnt; |
| 958 | } |
| 959 | |
| 960 | return sec; |
| 961 | } |
| 962 | |
Arnaldo Carvalho de Melo | 8ce998d | 2009-06-03 00:54:33 -0300 | [diff] [blame] | 963 | #define elf_section__for_each_rel(reldata, pos, pos_mem, idx, nr_entries) \ |
| 964 | for (idx = 0, pos = gelf_getrel(reldata, 0, &pos_mem); \ |
| 965 | idx < nr_entries; \ |
| 966 | ++idx, pos = gelf_getrel(reldata, idx, &pos_mem)) |
| 967 | |
| 968 | #define elf_section__for_each_rela(reldata, pos, pos_mem, idx, nr_entries) \ |
| 969 | for (idx = 0, pos = gelf_getrela(reldata, 0, &pos_mem); \ |
| 970 | idx < nr_entries; \ |
| 971 | ++idx, pos = gelf_getrela(reldata, idx, &pos_mem)) |
| 972 | |
Arnaldo Carvalho de Melo | a25e46c | 2009-07-11 12:18:36 -0300 | [diff] [blame] | 973 | /* |
| 974 | * We need to check if we have a .dynsym, so that we can handle the |
| 975 | * .plt, synthesizing its symbols, that aren't on the symtabs (be it |
| 976 | * .dynsym or .symtab). |
| 977 | * And always look at the original dso, not at debuginfo packages, that |
| 978 | * have the PLT data stripped out (shdr_rel_plt.sh_type == SHT_NOBITS). |
| 979 | */ |
Jiri Olsa | 33ff581 | 2012-04-18 15:46:58 +0200 | [diff] [blame] | 980 | static int |
| 981 | dso__synthesize_plt_symbols(struct dso *dso, char *name, struct map *map, |
| 982 | symbol_filter_t filter) |
Arnaldo Carvalho de Melo | 8ce998d | 2009-06-03 00:54:33 -0300 | [diff] [blame] | 983 | { |
| 984 | uint32_t nr_rel_entries, idx; |
| 985 | GElf_Sym sym; |
Paul Mackerras | 9cffa8d | 2009-06-19 22:21:42 +1000 | [diff] [blame] | 986 | u64 plt_offset; |
Arnaldo Carvalho de Melo | 8ce998d | 2009-06-03 00:54:33 -0300 | [diff] [blame] | 987 | GElf_Shdr shdr_plt; |
| 988 | struct symbol *f; |
Arnaldo Carvalho de Melo | a25e46c | 2009-07-11 12:18:36 -0300 | [diff] [blame] | 989 | GElf_Shdr shdr_rel_plt, shdr_dynsym; |
Arnaldo Carvalho de Melo | 8ce998d | 2009-06-03 00:54:33 -0300 | [diff] [blame] | 990 | Elf_Data *reldata, *syms, *symstrs; |
Arnaldo Carvalho de Melo | a25e46c | 2009-07-11 12:18:36 -0300 | [diff] [blame] | 991 | Elf_Scn *scn_plt_rel, *scn_symstrs, *scn_dynsym; |
| 992 | size_t dynsym_idx; |
| 993 | GElf_Ehdr ehdr; |
Arnaldo Carvalho de Melo | 8ce998d | 2009-06-03 00:54:33 -0300 | [diff] [blame] | 994 | char sympltname[1024]; |
Arnaldo Carvalho de Melo | a25e46c | 2009-07-11 12:18:36 -0300 | [diff] [blame] | 995 | Elf *elf; |
| 996 | int nr = 0, symidx, fd, err = 0; |
Arnaldo Carvalho de Melo | 8ce998d | 2009-06-03 00:54:33 -0300 | [diff] [blame] | 997 | |
David Ahern | ec5761e | 2010-12-09 13:27:07 -0700 | [diff] [blame] | 998 | fd = open(name, O_RDONLY); |
Arnaldo Carvalho de Melo | a25e46c | 2009-07-11 12:18:36 -0300 | [diff] [blame] | 999 | if (fd < 0) |
| 1000 | goto out; |
| 1001 | |
Marti Raudsepp | 8408712 | 2009-10-24 19:10:36 +0300 | [diff] [blame] | 1002 | elf = elf_begin(fd, PERF_ELF_C_READ_MMAP, NULL); |
Arnaldo Carvalho de Melo | a25e46c | 2009-07-11 12:18:36 -0300 | [diff] [blame] | 1003 | if (elf == NULL) |
| 1004 | goto out_close; |
| 1005 | |
| 1006 | if (gelf_getehdr(elf, &ehdr) == NULL) |
| 1007 | goto out_elf_end; |
| 1008 | |
| 1009 | scn_dynsym = elf_section_by_name(elf, &ehdr, &shdr_dynsym, |
| 1010 | ".dynsym", &dynsym_idx); |
| 1011 | if (scn_dynsym == NULL) |
| 1012 | goto out_elf_end; |
| 1013 | |
| 1014 | 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] | 1015 | ".rela.plt", NULL); |
| 1016 | if (scn_plt_rel == NULL) { |
Arnaldo Carvalho de Melo | a25e46c | 2009-07-11 12:18:36 -0300 | [diff] [blame] | 1017 | 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] | 1018 | ".rel.plt", NULL); |
| 1019 | if (scn_plt_rel == NULL) |
Arnaldo Carvalho de Melo | a25e46c | 2009-07-11 12:18:36 -0300 | [diff] [blame] | 1020 | goto out_elf_end; |
Arnaldo Carvalho de Melo | 8ce998d | 2009-06-03 00:54:33 -0300 | [diff] [blame] | 1021 | } |
| 1022 | |
Arnaldo Carvalho de Melo | a25e46c | 2009-07-11 12:18:36 -0300 | [diff] [blame] | 1023 | err = -1; |
Arnaldo Carvalho de Melo | 8ce998d | 2009-06-03 00:54:33 -0300 | [diff] [blame] | 1024 | |
Arnaldo Carvalho de Melo | a25e46c | 2009-07-11 12:18:36 -0300 | [diff] [blame] | 1025 | if (shdr_rel_plt.sh_link != dynsym_idx) |
| 1026 | goto out_elf_end; |
| 1027 | |
| 1028 | if (elf_section_by_name(elf, &ehdr, &shdr_plt, ".plt", NULL) == NULL) |
| 1029 | goto out_elf_end; |
Arnaldo Carvalho de Melo | 8ce998d | 2009-06-03 00:54:33 -0300 | [diff] [blame] | 1030 | |
| 1031 | /* |
Ingo Molnar | 83a0944 | 2009-08-15 12:26:57 +0200 | [diff] [blame] | 1032 | * 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] | 1033 | * and the symbols in the .dynsym they refer to. |
| 1034 | */ |
| 1035 | reldata = elf_getdata(scn_plt_rel, NULL); |
| 1036 | if (reldata == NULL) |
Arnaldo Carvalho de Melo | a25e46c | 2009-07-11 12:18:36 -0300 | [diff] [blame] | 1037 | goto out_elf_end; |
Arnaldo Carvalho de Melo | 8ce998d | 2009-06-03 00:54:33 -0300 | [diff] [blame] | 1038 | |
| 1039 | syms = elf_getdata(scn_dynsym, NULL); |
| 1040 | if (syms == NULL) |
Arnaldo Carvalho de Melo | a25e46c | 2009-07-11 12:18:36 -0300 | [diff] [blame] | 1041 | goto out_elf_end; |
Arnaldo Carvalho de Melo | 8ce998d | 2009-06-03 00:54:33 -0300 | [diff] [blame] | 1042 | |
Arnaldo Carvalho de Melo | a25e46c | 2009-07-11 12:18:36 -0300 | [diff] [blame] | 1043 | scn_symstrs = elf_getscn(elf, shdr_dynsym.sh_link); |
Arnaldo Carvalho de Melo | 8ce998d | 2009-06-03 00:54:33 -0300 | [diff] [blame] | 1044 | if (scn_symstrs == NULL) |
Arnaldo Carvalho de Melo | a25e46c | 2009-07-11 12:18:36 -0300 | [diff] [blame] | 1045 | goto out_elf_end; |
Arnaldo Carvalho de Melo | 8ce998d | 2009-06-03 00:54:33 -0300 | [diff] [blame] | 1046 | |
| 1047 | symstrs = elf_getdata(scn_symstrs, NULL); |
| 1048 | if (symstrs == NULL) |
Arnaldo Carvalho de Melo | a25e46c | 2009-07-11 12:18:36 -0300 | [diff] [blame] | 1049 | goto out_elf_end; |
Arnaldo Carvalho de Melo | 8ce998d | 2009-06-03 00:54:33 -0300 | [diff] [blame] | 1050 | |
| 1051 | nr_rel_entries = shdr_rel_plt.sh_size / shdr_rel_plt.sh_entsize; |
| 1052 | plt_offset = shdr_plt.sh_offset; |
| 1053 | |
| 1054 | if (shdr_rel_plt.sh_type == SHT_RELA) { |
| 1055 | GElf_Rela pos_mem, *pos; |
| 1056 | |
| 1057 | elf_section__for_each_rela(reldata, pos, pos_mem, idx, |
| 1058 | nr_rel_entries) { |
| 1059 | symidx = GELF_R_SYM(pos->r_info); |
| 1060 | plt_offset += shdr_plt.sh_entsize; |
| 1061 | gelf_getsym(syms, symidx, &sym); |
| 1062 | snprintf(sympltname, sizeof(sympltname), |
| 1063 | "%s@plt", elf_sym__name(&sym, symstrs)); |
| 1064 | |
| 1065 | f = symbol__new(plt_offset, shdr_plt.sh_entsize, |
Arnaldo Carvalho de Melo | c408fed | 2010-08-05 12:59:47 -0300 | [diff] [blame] | 1066 | STB_GLOBAL, sympltname); |
Arnaldo Carvalho de Melo | 8ce998d | 2009-06-03 00:54:33 -0300 | [diff] [blame] | 1067 | if (!f) |
Arnaldo Carvalho de Melo | a25e46c | 2009-07-11 12:18:36 -0300 | [diff] [blame] | 1068 | goto out_elf_end; |
Arnaldo Carvalho de Melo | 8ce998d | 2009-06-03 00:54:33 -0300 | [diff] [blame] | 1069 | |
Arnaldo Carvalho de Melo | 8216416 | 2009-11-16 13:48:11 -0200 | [diff] [blame] | 1070 | if (filter && filter(map, f)) |
| 1071 | symbol__delete(f); |
| 1072 | else { |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 1073 | symbols__insert(&dso->symbols[map->type], f); |
Arnaldo Carvalho de Melo | 8216416 | 2009-11-16 13:48:11 -0200 | [diff] [blame] | 1074 | ++nr; |
| 1075 | } |
Arnaldo Carvalho de Melo | 8ce998d | 2009-06-03 00:54:33 -0300 | [diff] [blame] | 1076 | } |
| 1077 | } else if (shdr_rel_plt.sh_type == SHT_REL) { |
| 1078 | GElf_Rel pos_mem, *pos; |
| 1079 | elf_section__for_each_rel(reldata, pos, pos_mem, idx, |
| 1080 | nr_rel_entries) { |
| 1081 | symidx = GELF_R_SYM(pos->r_info); |
| 1082 | plt_offset += shdr_plt.sh_entsize; |
| 1083 | gelf_getsym(syms, symidx, &sym); |
| 1084 | snprintf(sympltname, sizeof(sympltname), |
| 1085 | "%s@plt", elf_sym__name(&sym, symstrs)); |
| 1086 | |
| 1087 | f = symbol__new(plt_offset, shdr_plt.sh_entsize, |
Arnaldo Carvalho de Melo | c408fed | 2010-08-05 12:59:47 -0300 | [diff] [blame] | 1088 | STB_GLOBAL, sympltname); |
Arnaldo Carvalho de Melo | 8ce998d | 2009-06-03 00:54:33 -0300 | [diff] [blame] | 1089 | if (!f) |
Arnaldo Carvalho de Melo | a25e46c | 2009-07-11 12:18:36 -0300 | [diff] [blame] | 1090 | goto out_elf_end; |
Arnaldo Carvalho de Melo | 8ce998d | 2009-06-03 00:54:33 -0300 | [diff] [blame] | 1091 | |
Arnaldo Carvalho de Melo | 8216416 | 2009-11-16 13:48:11 -0200 | [diff] [blame] | 1092 | if (filter && filter(map, f)) |
| 1093 | symbol__delete(f); |
| 1094 | else { |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 1095 | symbols__insert(&dso->symbols[map->type], f); |
Arnaldo Carvalho de Melo | 8216416 | 2009-11-16 13:48:11 -0200 | [diff] [blame] | 1096 | ++nr; |
| 1097 | } |
Arnaldo Carvalho de Melo | 8ce998d | 2009-06-03 00:54:33 -0300 | [diff] [blame] | 1098 | } |
Arnaldo Carvalho de Melo | 8ce998d | 2009-06-03 00:54:33 -0300 | [diff] [blame] | 1099 | } |
| 1100 | |
Arnaldo Carvalho de Melo | a25e46c | 2009-07-11 12:18:36 -0300 | [diff] [blame] | 1101 | err = 0; |
| 1102 | out_elf_end: |
| 1103 | elf_end(elf); |
| 1104 | out_close: |
| 1105 | close(fd); |
| 1106 | |
| 1107 | if (err == 0) |
| 1108 | return nr; |
| 1109 | out: |
Arnaldo Carvalho de Melo | fe2197b | 2010-03-11 20:12:40 -0300 | [diff] [blame] | 1110 | pr_debug("%s: problems reading %s PLT info.\n", |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 1111 | __func__, dso->long_name); |
Arnaldo Carvalho de Melo | a25e46c | 2009-07-11 12:18:36 -0300 | [diff] [blame] | 1112 | return 0; |
Arnaldo Carvalho de Melo | 8ce998d | 2009-06-03 00:54:33 -0300 | [diff] [blame] | 1113 | } |
| 1114 | |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 1115 | static bool elf_sym__is_a(GElf_Sym *sym, enum map_type type) |
Arnaldo Carvalho de Melo | d45868d | 2009-12-11 14:50:38 -0200 | [diff] [blame] | 1116 | { |
| 1117 | switch (type) { |
| 1118 | case MAP__FUNCTION: |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 1119 | return elf_sym__is_function(sym); |
Arnaldo Carvalho de Melo | f1dfa0b | 2009-12-11 14:50:39 -0200 | [diff] [blame] | 1120 | case MAP__VARIABLE: |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 1121 | return elf_sym__is_object(sym); |
Arnaldo Carvalho de Melo | d45868d | 2009-12-11 14:50:38 -0200 | [diff] [blame] | 1122 | default: |
| 1123 | return false; |
| 1124 | } |
| 1125 | } |
| 1126 | |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 1127 | static bool elf_sec__is_a(GElf_Shdr *shdr, Elf_Data *secstrs, |
| 1128 | enum map_type type) |
Arnaldo Carvalho de Melo | d45868d | 2009-12-11 14:50:38 -0200 | [diff] [blame] | 1129 | { |
| 1130 | switch (type) { |
| 1131 | case MAP__FUNCTION: |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 1132 | return elf_sec__is_text(shdr, secstrs); |
Arnaldo Carvalho de Melo | f1dfa0b | 2009-12-11 14:50:39 -0200 | [diff] [blame] | 1133 | case MAP__VARIABLE: |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 1134 | return elf_sec__is_data(shdr, secstrs); |
Arnaldo Carvalho de Melo | d45868d | 2009-12-11 14:50:38 -0200 | [diff] [blame] | 1135 | default: |
| 1136 | return false; |
| 1137 | } |
| 1138 | } |
| 1139 | |
Eric B Munson | 70c3856 | 2010-06-14 14:56:33 +0100 | [diff] [blame] | 1140 | static size_t elf_addr_to_index(Elf *elf, GElf_Addr addr) |
| 1141 | { |
| 1142 | Elf_Scn *sec = NULL; |
| 1143 | GElf_Shdr shdr; |
| 1144 | size_t cnt = 1; |
| 1145 | |
| 1146 | while ((sec = elf_nextscn(elf, sec)) != NULL) { |
| 1147 | gelf_getshdr(sec, &shdr); |
| 1148 | |
| 1149 | if ((addr >= shdr.sh_addr) && |
| 1150 | (addr < (shdr.sh_addr + shdr.sh_size))) |
| 1151 | return cnt; |
| 1152 | |
| 1153 | ++cnt; |
| 1154 | } |
| 1155 | |
| 1156 | return -1; |
| 1157 | } |
| 1158 | |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 1159 | static int dso__load_sym(struct dso *dso, struct map *map, const char *name, |
Dave Martin | 6da80ce | 2010-07-30 09:50:09 -0300 | [diff] [blame] | 1160 | int fd, symbol_filter_t filter, int kmodule, |
| 1161 | int want_symtab) |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 1162 | { |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 1163 | struct kmap *kmap = dso->kernel ? map__kmap(map) : NULL; |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 1164 | struct map *curr_map = map; |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 1165 | struct dso *curr_dso = dso; |
Mike Galbraith | 6cfcc53 | 2009-07-02 08:08:36 +0200 | [diff] [blame] | 1166 | Elf_Data *symstrs, *secstrs; |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 1167 | uint32_t nr_syms; |
| 1168 | int err = -1; |
Ingo Molnar | 83a0944 | 2009-08-15 12:26:57 +0200 | [diff] [blame] | 1169 | uint32_t idx; |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 1170 | GElf_Ehdr ehdr; |
Eric B Munson | 70c3856 | 2010-06-14 14:56:33 +0100 | [diff] [blame] | 1171 | GElf_Shdr shdr, opdshdr; |
| 1172 | Elf_Data *syms, *opddata = NULL; |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 1173 | GElf_Sym sym; |
Eric B Munson | 70c3856 | 2010-06-14 14:56:33 +0100 | [diff] [blame] | 1174 | Elf_Scn *sec, *sec_strndx, *opdsec; |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 1175 | Elf *elf; |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1176 | int nr = 0; |
Eric B Munson | 70c3856 | 2010-06-14 14:56:33 +0100 | [diff] [blame] | 1177 | size_t opdidx = 0; |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 1178 | |
Marti Raudsepp | 8408712 | 2009-10-24 19:10:36 +0300 | [diff] [blame] | 1179 | elf = elf_begin(fd, PERF_ELF_C_READ_MMAP, NULL); |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 1180 | if (elf == NULL) { |
Dave Martin | 8b1389e | 2010-07-30 09:36:08 -0300 | [diff] [blame] | 1181 | pr_debug("%s: cannot read %s ELF file.\n", __func__, name); |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 1182 | goto out_close; |
| 1183 | } |
| 1184 | |
| 1185 | if (gelf_getehdr(elf, &ehdr) == NULL) { |
Dave Martin | 8b1389e | 2010-07-30 09:36:08 -0300 | [diff] [blame] | 1186 | pr_debug("%s: cannot get elf header.\n", __func__); |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 1187 | goto out_elf_end; |
| 1188 | } |
| 1189 | |
Dave Martin | 6da80ce | 2010-07-30 09:50:09 -0300 | [diff] [blame] | 1190 | /* Always reject images with a mismatched build-id: */ |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 1191 | if (dso->has_build_id) { |
Dave Martin | 21916c3 | 2010-07-30 09:08:08 -0300 | [diff] [blame] | 1192 | u8 build_id[BUILD_ID_SIZE]; |
| 1193 | |
Stephane Eranian | be96ea8 | 2010-10-22 17:25:01 +0200 | [diff] [blame] | 1194 | if (elf_read_build_id(elf, build_id, BUILD_ID_SIZE) < 0) |
Dave Martin | 21916c3 | 2010-07-30 09:08:08 -0300 | [diff] [blame] | 1195 | goto out_elf_end; |
| 1196 | |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 1197 | if (!dso__build_id_equal(dso, build_id)) |
Dave Martin | 21916c3 | 2010-07-30 09:08:08 -0300 | [diff] [blame] | 1198 | goto out_elf_end; |
| 1199 | } |
| 1200 | |
Arnaldo Carvalho de Melo | 8ce998d | 2009-06-03 00:54:33 -0300 | [diff] [blame] | 1201 | sec = elf_section_by_name(elf, &ehdr, &shdr, ".symtab", NULL); |
| 1202 | if (sec == NULL) { |
Dave Martin | 6da80ce | 2010-07-30 09:50:09 -0300 | [diff] [blame] | 1203 | if (want_symtab) |
| 1204 | goto out_elf_end; |
| 1205 | |
Arnaldo Carvalho de Melo | a25e46c | 2009-07-11 12:18:36 -0300 | [diff] [blame] | 1206 | sec = elf_section_by_name(elf, &ehdr, &shdr, ".dynsym", NULL); |
| 1207 | if (sec == NULL) |
Arnaldo Carvalho de Melo | 8ce998d | 2009-06-03 00:54:33 -0300 | [diff] [blame] | 1208 | goto out_elf_end; |
Arnaldo Carvalho de Melo | 8ce998d | 2009-06-03 00:54:33 -0300 | [diff] [blame] | 1209 | } |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 1210 | |
Eric B Munson | 70c3856 | 2010-06-14 14:56:33 +0100 | [diff] [blame] | 1211 | opdsec = elf_section_by_name(elf, &ehdr, &opdshdr, ".opd", &opdidx); |
Anton Blanchard | adb0918 | 2011-08-24 16:40:14 +1000 | [diff] [blame] | 1212 | if (opdshdr.sh_type != SHT_PROGBITS) |
| 1213 | opdsec = NULL; |
Eric B Munson | 70c3856 | 2010-06-14 14:56:33 +0100 | [diff] [blame] | 1214 | if (opdsec) |
| 1215 | opddata = elf_rawdata(opdsec, NULL); |
| 1216 | |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 1217 | syms = elf_getdata(sec, NULL); |
| 1218 | if (syms == NULL) |
| 1219 | goto out_elf_end; |
| 1220 | |
| 1221 | sec = elf_getscn(elf, shdr.sh_link); |
| 1222 | if (sec == NULL) |
| 1223 | goto out_elf_end; |
| 1224 | |
| 1225 | symstrs = elf_getdata(sec, NULL); |
| 1226 | if (symstrs == NULL) |
| 1227 | goto out_elf_end; |
| 1228 | |
Mike Galbraith | 6cfcc53 | 2009-07-02 08:08:36 +0200 | [diff] [blame] | 1229 | sec_strndx = elf_getscn(elf, ehdr.e_shstrndx); |
| 1230 | if (sec_strndx == NULL) |
| 1231 | goto out_elf_end; |
| 1232 | |
| 1233 | secstrs = elf_getdata(sec_strndx, NULL); |
Stoyan Gaydarov | 9b30a26 | 2009-07-30 05:25:29 -0500 | [diff] [blame] | 1234 | if (secstrs == NULL) |
Mike Galbraith | 6cfcc53 | 2009-07-02 08:08:36 +0200 | [diff] [blame] | 1235 | goto out_elf_end; |
| 1236 | |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 1237 | nr_syms = shdr.sh_size / shdr.sh_entsize; |
| 1238 | |
Arjan van de Ven | e9fbc9d | 2009-06-06 21:22:33 +0200 | [diff] [blame] | 1239 | memset(&sym, 0, sizeof(sym)); |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 1240 | if (dso->kernel == DSO_TYPE_USER) { |
| 1241 | dso->adjust_symbols = (ehdr.e_type == ET_EXEC || |
Arnaldo Carvalho de Melo | 30d7a77 | 2009-07-02 21:24:14 -0300 | [diff] [blame] | 1242 | elf_section_by_name(elf, &ehdr, &shdr, |
| 1243 | ".gnu.prelink_undo", |
| 1244 | NULL) != NULL); |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 1245 | } else { |
| 1246 | dso->adjust_symbols = 0; |
| 1247 | } |
Ingo Molnar | 83a0944 | 2009-08-15 12:26:57 +0200 | [diff] [blame] | 1248 | elf_symtab__for_each_symbol(syms, nr_syms, idx, sym) { |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 1249 | struct symbol *f; |
Arnaldo Carvalho de Melo | 56b03f3 | 2010-01-05 16:50:31 -0200 | [diff] [blame] | 1250 | const char *elf_name = elf_sym__name(&sym, symstrs); |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 1251 | char *demangled = NULL; |
Mike Galbraith | 6cfcc53 | 2009-07-02 08:08:36 +0200 | [diff] [blame] | 1252 | int is_label = elf_sym__is_label(&sym); |
| 1253 | const char *section_name; |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 1254 | |
Arnaldo Carvalho de Melo | 9de89fe | 2010-02-03 16:52:00 -0200 | [diff] [blame] | 1255 | if (kmap && kmap->ref_reloc_sym && kmap->ref_reloc_sym->name && |
| 1256 | strcmp(elf_name, kmap->ref_reloc_sym->name) == 0) |
| 1257 | kmap->ref_reloc_sym->unrelocated_addr = sym.st_value; |
Arnaldo Carvalho de Melo | 56b03f3 | 2010-01-05 16:50:31 -0200 | [diff] [blame] | 1258 | |
Arnaldo Carvalho de Melo | d45868d | 2009-12-11 14:50:38 -0200 | [diff] [blame] | 1259 | if (!is_label && !elf_sym__is_a(&sym, map->type)) |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 1260 | continue; |
| 1261 | |
Dave Martin | 696b97a | 2010-08-09 12:21:18 +0100 | [diff] [blame] | 1262 | /* Reject ARM ELF "mapping symbols": these aren't unique and |
| 1263 | * don't identify functions, so will confuse the profile |
| 1264 | * output: */ |
| 1265 | if (ehdr.e_machine == EM_ARM) { |
| 1266 | if (!strcmp(elf_name, "$a") || |
| 1267 | !strcmp(elf_name, "$d") || |
| 1268 | !strcmp(elf_name, "$t")) |
| 1269 | continue; |
| 1270 | } |
| 1271 | |
Eric B Munson | 70c3856 | 2010-06-14 14:56:33 +0100 | [diff] [blame] | 1272 | if (opdsec && sym.st_shndx == opdidx) { |
| 1273 | u32 offset = sym.st_value - opdshdr.sh_addr; |
| 1274 | u64 *opd = opddata->d_buf + offset; |
| 1275 | sym.st_value = *opd; |
| 1276 | sym.st_shndx = elf_addr_to_index(elf, sym.st_value); |
| 1277 | } |
| 1278 | |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 1279 | sec = elf_getscn(elf, sym.st_shndx); |
| 1280 | if (!sec) |
| 1281 | goto out_elf_end; |
| 1282 | |
| 1283 | gelf_getshdr(sec, &shdr); |
Mike Galbraith | 6cfcc53 | 2009-07-02 08:08:36 +0200 | [diff] [blame] | 1284 | |
Arnaldo Carvalho de Melo | d45868d | 2009-12-11 14:50:38 -0200 | [diff] [blame] | 1285 | if (is_label && !elf_sec__is_a(&shdr, secstrs, map->type)) |
Mike Galbraith | 6cfcc53 | 2009-07-02 08:08:36 +0200 | [diff] [blame] | 1286 | continue; |
| 1287 | |
| 1288 | section_name = elf_sec__name(&shdr, secstrs); |
Ingo Molnar | 0b73da3 | 2009-06-06 15:48:52 +0200 | [diff] [blame] | 1289 | |
Dr. David Alan Gilbert | b2f8fb2 | 2011-01-21 16:40:19 +0000 | [diff] [blame] | 1290 | /* On ARM, symbols for thumb functions have 1 added to |
| 1291 | * the symbol address as a flag - remove it */ |
| 1292 | if ((ehdr.e_machine == EM_ARM) && |
| 1293 | (map->type == MAP__FUNCTION) && |
| 1294 | (sym.st_value & 1)) |
| 1295 | --sym.st_value; |
| 1296 | |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 1297 | if (dso->kernel != DSO_TYPE_USER || kmodule) { |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 1298 | char dso_name[PATH_MAX]; |
| 1299 | |
| 1300 | if (strcmp(section_name, |
Arnaldo Carvalho de Melo | b63be8d | 2010-03-15 15:03:50 -0300 | [diff] [blame] | 1301 | (curr_dso->short_name + |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 1302 | dso->short_name_len)) == 0) |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 1303 | goto new_symbol; |
| 1304 | |
| 1305 | if (strcmp(section_name, ".text") == 0) { |
| 1306 | curr_map = map; |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 1307 | curr_dso = dso; |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 1308 | goto new_symbol; |
| 1309 | } |
| 1310 | |
| 1311 | snprintf(dso_name, sizeof(dso_name), |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 1312 | "%s%s", dso->short_name, section_name); |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 1313 | |
Arnaldo Carvalho de Melo | 9de89fe | 2010-02-03 16:52:00 -0200 | [diff] [blame] | 1314 | curr_map = map_groups__find_by_name(kmap->kmaps, map->type, dso_name); |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 1315 | if (curr_map == NULL) { |
| 1316 | u64 start = sym.st_value; |
| 1317 | |
| 1318 | if (kmodule) |
| 1319 | start += map->start + shdr.sh_offset; |
| 1320 | |
Arnaldo Carvalho de Melo | 00a192b | 2009-10-30 16:28:24 -0200 | [diff] [blame] | 1321 | curr_dso = dso__new(dso_name); |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 1322 | if (curr_dso == NULL) |
| 1323 | goto out_elf_end; |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 1324 | curr_dso->kernel = dso->kernel; |
| 1325 | curr_dso->long_name = dso->long_name; |
| 1326 | curr_dso->long_name_len = dso->long_name_len; |
Arnaldo Carvalho de Melo | 3610583 | 2009-11-27 16:29:16 -0200 | [diff] [blame] | 1327 | curr_map = map__new2(start, curr_dso, |
Arnaldo Carvalho de Melo | 6275ce2 | 2010-02-03 16:52:01 -0200 | [diff] [blame] | 1328 | map->type); |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 1329 | if (curr_map == NULL) { |
| 1330 | dso__delete(curr_dso); |
| 1331 | goto out_elf_end; |
| 1332 | } |
Arnaldo Carvalho de Melo | ed52ce2 | 2009-10-19 17:17:57 -0200 | [diff] [blame] | 1333 | curr_map->map_ip = identity__map_ip; |
| 1334 | curr_map->unmap_ip = identity__map_ip; |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 1335 | curr_dso->symtab_type = dso->symtab_type; |
Arnaldo Carvalho de Melo | 9de89fe | 2010-02-03 16:52:00 -0200 | [diff] [blame] | 1336 | map_groups__insert(kmap->kmaps, curr_map); |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 1337 | dsos__add(&dso->node, curr_dso); |
Arnaldo Carvalho de Melo | 6275ce2 | 2010-02-03 16:52:01 -0200 | [diff] [blame] | 1338 | dso__set_loaded(curr_dso, map->type); |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 1339 | } else |
| 1340 | curr_dso = curr_map->dso; |
| 1341 | |
| 1342 | goto new_symbol; |
Arnaldo Carvalho de Melo | af427bf | 2009-10-05 14:26:17 -0300 | [diff] [blame] | 1343 | } |
| 1344 | |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 1345 | if (curr_dso->adjust_symbols) { |
Arnaldo Carvalho de Melo | 9486aa3 | 2011-01-22 20:37:02 -0200 | [diff] [blame] | 1346 | pr_debug4("%s: adjusting symbol: st_value: %#" PRIx64 " " |
| 1347 | "sh_addr: %#" PRIx64 " sh_offset: %#" PRIx64 "\n", __func__, |
Arnaldo Carvalho de Melo | 29a9f66 | 2010-02-03 16:52:06 -0200 | [diff] [blame] | 1348 | (u64)sym.st_value, (u64)shdr.sh_addr, |
| 1349 | (u64)shdr.sh_offset); |
Arnaldo Carvalho de Melo | f5812a7 | 2009-06-30 11:43:17 -0300 | [diff] [blame] | 1350 | sym.st_value -= shdr.sh_addr - shdr.sh_offset; |
Arnaldo Carvalho de Melo | af427bf | 2009-10-05 14:26:17 -0300 | [diff] [blame] | 1351 | } |
Arnaldo Carvalho de Melo | 28ac909 | 2009-07-20 14:14:12 -0300 | [diff] [blame] | 1352 | /* |
| 1353 | * We need to figure out if the object was created from C++ sources |
| 1354 | * DWARF DW_compile_unit has this, but we don't always have access |
| 1355 | * to it... |
| 1356 | */ |
Ingo Molnar | 83a0944 | 2009-08-15 12:26:57 +0200 | [diff] [blame] | 1357 | demangled = bfd_demangle(NULL, elf_name, DMGL_PARAMS | DMGL_ANSI); |
Arnaldo Carvalho de Melo | 28ac909 | 2009-07-20 14:14:12 -0300 | [diff] [blame] | 1358 | if (demangled != NULL) |
Ingo Molnar | 83a0944 | 2009-08-15 12:26:57 +0200 | [diff] [blame] | 1359 | elf_name = demangled; |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 1360 | new_symbol: |
Arnaldo Carvalho de Melo | c408fed | 2010-08-05 12:59:47 -0300 | [diff] [blame] | 1361 | f = symbol__new(sym.st_value, sym.st_size, |
| 1362 | GELF_ST_BIND(sym.st_info), elf_name); |
Arnaldo Carvalho de Melo | 28ac909 | 2009-07-20 14:14:12 -0300 | [diff] [blame] | 1363 | free(demangled); |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 1364 | if (!f) |
| 1365 | goto out_elf_end; |
| 1366 | |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 1367 | if (filter && filter(curr_map, f)) |
Arnaldo Carvalho de Melo | 00a192b | 2009-10-30 16:28:24 -0200 | [diff] [blame] | 1368 | symbol__delete(f); |
Arnaldo Carvalho de Melo | 69ee69f | 2009-05-28 14:55:26 -0300 | [diff] [blame] | 1369 | else { |
Arnaldo Carvalho de Melo | 6a4694a | 2009-11-27 16:29:17 -0200 | [diff] [blame] | 1370 | symbols__insert(&curr_dso->symbols[curr_map->type], f); |
Arnaldo Carvalho de Melo | 69ee69f | 2009-05-28 14:55:26 -0300 | [diff] [blame] | 1371 | nr++; |
| 1372 | } |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 1373 | } |
| 1374 | |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 1375 | /* |
| 1376 | * For misannotated, zeroed, ASM function sizes. |
| 1377 | */ |
Arnaldo Carvalho de Melo | 6275ce2 | 2010-02-03 16:52:01 -0200 | [diff] [blame] | 1378 | if (nr > 0) { |
Anton Blanchard | 694bf40 | 2011-08-24 16:40:17 +1000 | [diff] [blame] | 1379 | symbols__fixup_duplicate(&dso->symbols[map->type]); |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 1380 | symbols__fixup_end(&dso->symbols[map->type]); |
Arnaldo Carvalho de Melo | 6275ce2 | 2010-02-03 16:52:01 -0200 | [diff] [blame] | 1381 | if (kmap) { |
| 1382 | /* |
| 1383 | * We need to fixup this here too because we create new |
| 1384 | * maps here, for things like vsyscall sections. |
| 1385 | */ |
| 1386 | __map_groups__fixup_end(kmap->kmaps, map->type); |
| 1387 | } |
| 1388 | } |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 1389 | err = nr; |
| 1390 | out_elf_end: |
| 1391 | elf_end(elf); |
| 1392 | out_close: |
| 1393 | return err; |
| 1394 | } |
| 1395 | |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 1396 | static bool dso__build_id_equal(const struct dso *dso, u8 *build_id) |
Arnaldo Carvalho de Melo | 78075ca | 2009-11-20 20:51:26 -0200 | [diff] [blame] | 1397 | { |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 1398 | return memcmp(dso->build_id, build_id, sizeof(dso->build_id)) == 0; |
Arnaldo Carvalho de Melo | 78075ca | 2009-11-20 20:51:26 -0200 | [diff] [blame] | 1399 | } |
| 1400 | |
Zhang, Yanmin | a1645ce | 2010-04-19 13:32:50 +0800 | [diff] [blame] | 1401 | bool __dsos__read_build_ids(struct list_head *head, bool with_hits) |
Frederic Weisbecker | 57f395a | 2009-11-11 04:51:04 +0100 | [diff] [blame] | 1402 | { |
Arnaldo Carvalho de Melo | e30a3d1 | 2009-11-18 20:20:51 -0200 | [diff] [blame] | 1403 | bool have_build_id = false; |
Frederic Weisbecker | 57f395a | 2009-11-11 04:51:04 +0100 | [diff] [blame] | 1404 | struct dso *pos; |
| 1405 | |
Arnaldo Carvalho de Melo | 6122e4e | 2010-02-03 16:52:05 -0200 | [diff] [blame] | 1406 | list_for_each_entry(pos, head, node) { |
| 1407 | if (with_hits && !pos->hit) |
| 1408 | continue; |
Arnaldo Carvalho de Melo | f6e1467 | 2010-05-19 11:13:02 -0300 | [diff] [blame] | 1409 | if (pos->has_build_id) { |
| 1410 | have_build_id = true; |
| 1411 | continue; |
| 1412 | } |
Arnaldo Carvalho de Melo | e30a3d1 | 2009-11-18 20:20:51 -0200 | [diff] [blame] | 1413 | if (filename__read_build_id(pos->long_name, pos->build_id, |
| 1414 | sizeof(pos->build_id)) > 0) { |
| 1415 | have_build_id = true; |
| 1416 | pos->has_build_id = true; |
| 1417 | } |
Arnaldo Carvalho de Melo | 6122e4e | 2010-02-03 16:52:05 -0200 | [diff] [blame] | 1418 | } |
Frederic Weisbecker | 57f395a | 2009-11-11 04:51:04 +0100 | [diff] [blame] | 1419 | |
Arnaldo Carvalho de Melo | e30a3d1 | 2009-11-18 20:20:51 -0200 | [diff] [blame] | 1420 | return have_build_id; |
Frederic Weisbecker | 57f395a | 2009-11-11 04:51:04 +0100 | [diff] [blame] | 1421 | } |
| 1422 | |
Arnaldo Carvalho de Melo | fd7a346 | 2009-11-20 20:51:25 -0200 | [diff] [blame] | 1423 | /* |
| 1424 | * Align offset to 4 bytes as needed for note name and descriptor data. |
| 1425 | */ |
| 1426 | #define NOTE_ALIGN(n) (((n) + 3) & -4U) |
| 1427 | |
Dave Martin | 21916c3 | 2010-07-30 09:08:08 -0300 | [diff] [blame] | 1428 | static int elf_read_build_id(Elf *elf, void *bf, size_t size) |
Arnaldo Carvalho de Melo | 4d1e00a | 2009-08-05 19:02:49 -0300 | [diff] [blame] | 1429 | { |
Dave Martin | 21916c3 | 2010-07-30 09:08:08 -0300 | [diff] [blame] | 1430 | int err = -1; |
Arnaldo Carvalho de Melo | 4d1e00a | 2009-08-05 19:02:49 -0300 | [diff] [blame] | 1431 | GElf_Ehdr ehdr; |
| 1432 | GElf_Shdr shdr; |
Arnaldo Carvalho de Melo | fd7a346 | 2009-11-20 20:51:25 -0200 | [diff] [blame] | 1433 | Elf_Data *data; |
Arnaldo Carvalho de Melo | 4d1e00a | 2009-08-05 19:02:49 -0300 | [diff] [blame] | 1434 | Elf_Scn *sec; |
Pekka Enberg | e57cfcd | 2009-11-22 12:29:44 +0200 | [diff] [blame] | 1435 | Elf_Kind ek; |
Arnaldo Carvalho de Melo | fd7a346 | 2009-11-20 20:51:25 -0200 | [diff] [blame] | 1436 | void *ptr; |
Arnaldo Carvalho de Melo | 4d1e00a | 2009-08-05 19:02:49 -0300 | [diff] [blame] | 1437 | |
Arnaldo Carvalho de Melo | 2643ce1 | 2009-11-03 21:46:10 -0200 | [diff] [blame] | 1438 | if (size < BUILD_ID_SIZE) |
| 1439 | goto out; |
| 1440 | |
Pekka Enberg | e57cfcd | 2009-11-22 12:29:44 +0200 | [diff] [blame] | 1441 | ek = elf_kind(elf); |
| 1442 | if (ek != ELF_K_ELF) |
Dave Martin | 21916c3 | 2010-07-30 09:08:08 -0300 | [diff] [blame] | 1443 | goto out; |
Pekka Enberg | e57cfcd | 2009-11-22 12:29:44 +0200 | [diff] [blame] | 1444 | |
Arnaldo Carvalho de Melo | 4d1e00a | 2009-08-05 19:02:49 -0300 | [diff] [blame] | 1445 | if (gelf_getehdr(elf, &ehdr) == NULL) { |
Arnaldo Carvalho de Melo | 6beba7a | 2009-10-21 17:34:06 -0200 | [diff] [blame] | 1446 | pr_err("%s: cannot get elf header.\n", __func__); |
Dave Martin | 21916c3 | 2010-07-30 09:08:08 -0300 | [diff] [blame] | 1447 | goto out; |
Arnaldo Carvalho de Melo | 4d1e00a | 2009-08-05 19:02:49 -0300 | [diff] [blame] | 1448 | } |
| 1449 | |
Arnaldo Carvalho de Melo | 2643ce1 | 2009-11-03 21:46:10 -0200 | [diff] [blame] | 1450 | sec = elf_section_by_name(elf, &ehdr, &shdr, |
| 1451 | ".note.gnu.build-id", NULL); |
Arnaldo Carvalho de Melo | fd7a346 | 2009-11-20 20:51:25 -0200 | [diff] [blame] | 1452 | if (sec == NULL) { |
| 1453 | sec = elf_section_by_name(elf, &ehdr, &shdr, |
| 1454 | ".notes", NULL); |
| 1455 | if (sec == NULL) |
Dave Martin | 21916c3 | 2010-07-30 09:08:08 -0300 | [diff] [blame] | 1456 | goto out; |
Arnaldo Carvalho de Melo | fd7a346 | 2009-11-20 20:51:25 -0200 | [diff] [blame] | 1457 | } |
| 1458 | |
| 1459 | data = elf_getdata(sec, NULL); |
| 1460 | if (data == NULL) |
Dave Martin | 21916c3 | 2010-07-30 09:08:08 -0300 | [diff] [blame] | 1461 | goto out; |
Arnaldo Carvalho de Melo | 4d1e00a | 2009-08-05 19:02:49 -0300 | [diff] [blame] | 1462 | |
Arnaldo Carvalho de Melo | fd7a346 | 2009-11-20 20:51:25 -0200 | [diff] [blame] | 1463 | ptr = data->d_buf; |
| 1464 | while (ptr < (data->d_buf + data->d_size)) { |
| 1465 | GElf_Nhdr *nhdr = ptr; |
Stephane Eranian | be96ea8 | 2010-10-22 17:25:01 +0200 | [diff] [blame] | 1466 | size_t namesz = NOTE_ALIGN(nhdr->n_namesz), |
| 1467 | descsz = NOTE_ALIGN(nhdr->n_descsz); |
Arnaldo Carvalho de Melo | fd7a346 | 2009-11-20 20:51:25 -0200 | [diff] [blame] | 1468 | const char *name; |
| 1469 | |
| 1470 | ptr += sizeof(*nhdr); |
| 1471 | name = ptr; |
| 1472 | ptr += namesz; |
| 1473 | if (nhdr->n_type == NT_GNU_BUILD_ID && |
| 1474 | nhdr->n_namesz == sizeof("GNU")) { |
| 1475 | if (memcmp(name, "GNU", sizeof("GNU")) == 0) { |
Stephane Eranian | be96ea8 | 2010-10-22 17:25:01 +0200 | [diff] [blame] | 1476 | size_t sz = min(size, descsz); |
| 1477 | memcpy(bf, ptr, sz); |
| 1478 | memset(bf + sz, 0, size - sz); |
| 1479 | err = descsz; |
Arnaldo Carvalho de Melo | fd7a346 | 2009-11-20 20:51:25 -0200 | [diff] [blame] | 1480 | break; |
| 1481 | } |
| 1482 | } |
| 1483 | ptr += descsz; |
| 1484 | } |
Dave Martin | 21916c3 | 2010-07-30 09:08:08 -0300 | [diff] [blame] | 1485 | |
| 1486 | out: |
| 1487 | return err; |
| 1488 | } |
| 1489 | |
| 1490 | int filename__read_build_id(const char *filename, void *bf, size_t size) |
| 1491 | { |
| 1492 | int fd, err = -1; |
| 1493 | Elf *elf; |
| 1494 | |
| 1495 | if (size < BUILD_ID_SIZE) |
| 1496 | goto out; |
| 1497 | |
| 1498 | fd = open(filename, O_RDONLY); |
| 1499 | if (fd < 0) |
| 1500 | goto out; |
| 1501 | |
| 1502 | elf = elf_begin(fd, PERF_ELF_C_READ_MMAP, NULL); |
| 1503 | if (elf == NULL) { |
| 1504 | pr_debug2("%s: cannot read %s ELF file.\n", __func__, filename); |
| 1505 | goto out_close; |
| 1506 | } |
| 1507 | |
| 1508 | err = elf_read_build_id(elf, bf, size); |
| 1509 | |
Arnaldo Carvalho de Melo | 2643ce1 | 2009-11-03 21:46:10 -0200 | [diff] [blame] | 1510 | elf_end(elf); |
| 1511 | out_close: |
| 1512 | close(fd); |
| 1513 | out: |
| 1514 | return err; |
| 1515 | } |
| 1516 | |
Arnaldo Carvalho de Melo | f1617b4 | 2009-11-18 20:20:52 -0200 | [diff] [blame] | 1517 | int sysfs__read_build_id(const char *filename, void *build_id, size_t size) |
| 1518 | { |
| 1519 | int fd, err = -1; |
| 1520 | |
| 1521 | if (size < BUILD_ID_SIZE) |
| 1522 | goto out; |
| 1523 | |
| 1524 | fd = open(filename, O_RDONLY); |
| 1525 | if (fd < 0) |
| 1526 | goto out; |
| 1527 | |
| 1528 | while (1) { |
| 1529 | char bf[BUFSIZ]; |
| 1530 | GElf_Nhdr nhdr; |
Stephane Eranian | be96ea8 | 2010-10-22 17:25:01 +0200 | [diff] [blame] | 1531 | size_t namesz, descsz; |
Arnaldo Carvalho de Melo | f1617b4 | 2009-11-18 20:20:52 -0200 | [diff] [blame] | 1532 | |
| 1533 | if (read(fd, &nhdr, sizeof(nhdr)) != sizeof(nhdr)) |
| 1534 | break; |
| 1535 | |
Arnaldo Carvalho de Melo | fd7a346 | 2009-11-20 20:51:25 -0200 | [diff] [blame] | 1536 | namesz = NOTE_ALIGN(nhdr.n_namesz); |
| 1537 | descsz = NOTE_ALIGN(nhdr.n_descsz); |
Arnaldo Carvalho de Melo | f1617b4 | 2009-11-18 20:20:52 -0200 | [diff] [blame] | 1538 | if (nhdr.n_type == NT_GNU_BUILD_ID && |
| 1539 | nhdr.n_namesz == sizeof("GNU")) { |
Stephane Eranian | be96ea8 | 2010-10-22 17:25:01 +0200 | [diff] [blame] | 1540 | if (read(fd, bf, namesz) != (ssize_t)namesz) |
Arnaldo Carvalho de Melo | f1617b4 | 2009-11-18 20:20:52 -0200 | [diff] [blame] | 1541 | break; |
| 1542 | if (memcmp(bf, "GNU", sizeof("GNU")) == 0) { |
Stephane Eranian | be96ea8 | 2010-10-22 17:25:01 +0200 | [diff] [blame] | 1543 | size_t sz = min(descsz, size); |
| 1544 | if (read(fd, build_id, sz) == (ssize_t)sz) { |
| 1545 | memset(build_id + sz, 0, size - sz); |
Arnaldo Carvalho de Melo | f1617b4 | 2009-11-18 20:20:52 -0200 | [diff] [blame] | 1546 | err = 0; |
| 1547 | break; |
| 1548 | } |
Stephane Eranian | be96ea8 | 2010-10-22 17:25:01 +0200 | [diff] [blame] | 1549 | } else if (read(fd, bf, descsz) != (ssize_t)descsz) |
Arnaldo Carvalho de Melo | f1617b4 | 2009-11-18 20:20:52 -0200 | [diff] [blame] | 1550 | break; |
| 1551 | } else { |
| 1552 | int n = namesz + descsz; |
| 1553 | if (read(fd, bf, n) != n) |
| 1554 | break; |
| 1555 | } |
| 1556 | } |
| 1557 | close(fd); |
| 1558 | out: |
| 1559 | return err; |
| 1560 | } |
| 1561 | |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 1562 | char dso__symtab_origin(const struct dso *dso) |
Arnaldo Carvalho de Melo | 94cb9e3 | 2009-08-06 14:43:17 -0300 | [diff] [blame] | 1563 | { |
| 1564 | static const char origin[] = { |
Arnaldo Carvalho de Melo | 878b439 | 2011-03-11 13:13:36 -0300 | [diff] [blame] | 1565 | [SYMTAB__KALLSYMS] = 'k', |
| 1566 | [SYMTAB__JAVA_JIT] = 'j', |
| 1567 | [SYMTAB__BUILD_ID_CACHE] = 'B', |
| 1568 | [SYMTAB__FEDORA_DEBUGINFO] = 'f', |
| 1569 | [SYMTAB__UBUNTU_DEBUGINFO] = 'u', |
| 1570 | [SYMTAB__BUILDID_DEBUGINFO] = 'b', |
| 1571 | [SYMTAB__SYSTEM_PATH_DSO] = 'd', |
| 1572 | [SYMTAB__SYSTEM_PATH_KMODULE] = 'K', |
| 1573 | [SYMTAB__GUEST_KALLSYMS] = 'g', |
| 1574 | [SYMTAB__GUEST_KMODULE] = 'G', |
Arnaldo Carvalho de Melo | 94cb9e3 | 2009-08-06 14:43:17 -0300 | [diff] [blame] | 1575 | }; |
| 1576 | |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 1577 | if (dso == NULL || dso->symtab_type == SYMTAB__NOT_FOUND) |
Arnaldo Carvalho de Melo | 94cb9e3 | 2009-08-06 14:43:17 -0300 | [diff] [blame] | 1578 | return '!'; |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 1579 | return origin[dso->symtab_type]; |
Arnaldo Carvalho de Melo | 94cb9e3 | 2009-08-06 14:43:17 -0300 | [diff] [blame] | 1580 | } |
| 1581 | |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 1582 | int dso__load(struct dso *dso, struct map *map, symbol_filter_t filter) |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 1583 | { |
Arnaldo Carvalho de Melo | 4d1e00a | 2009-08-05 19:02:49 -0300 | [diff] [blame] | 1584 | int size = PATH_MAX; |
Arnaldo Carvalho de Melo | c338aee | 2009-11-20 20:51:27 -0200 | [diff] [blame] | 1585 | char *name; |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 1586 | int ret = -1; |
| 1587 | int fd; |
Arnaldo Carvalho de Melo | 23346f2 | 2010-04-27 21:17:50 -0300 | [diff] [blame] | 1588 | struct machine *machine; |
Zhang, Yanmin | a1645ce | 2010-04-19 13:32:50 +0800 | [diff] [blame] | 1589 | const char *root_dir; |
Dave Martin | 6da80ce | 2010-07-30 09:50:09 -0300 | [diff] [blame] | 1590 | int want_symtab; |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 1591 | |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 1592 | dso__set_loaded(dso, map->type); |
Arnaldo Carvalho de Melo | 66bd842 | 2009-10-28 21:51:21 -0200 | [diff] [blame] | 1593 | |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 1594 | if (dso->kernel == DSO_TYPE_KERNEL) |
| 1595 | return dso__load_kernel_sym(dso, map, filter); |
| 1596 | else if (dso->kernel == DSO_TYPE_GUEST_KERNEL) |
| 1597 | return dso__load_guest_kernel_sym(dso, map, filter); |
Zhang, Yanmin | a1645ce | 2010-04-19 13:32:50 +0800 | [diff] [blame] | 1598 | |
Arnaldo Carvalho de Melo | 23346f2 | 2010-04-27 21:17:50 -0300 | [diff] [blame] | 1599 | if (map->groups && map->groups->machine) |
| 1600 | machine = map->groups->machine; |
Zhang, Yanmin | a1645ce | 2010-04-19 13:32:50 +0800 | [diff] [blame] | 1601 | else |
Arnaldo Carvalho de Melo | 23346f2 | 2010-04-27 21:17:50 -0300 | [diff] [blame] | 1602 | machine = NULL; |
Arnaldo Carvalho de Melo | c338aee | 2009-11-20 20:51:27 -0200 | [diff] [blame] | 1603 | |
| 1604 | name = malloc(size); |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 1605 | if (!name) |
| 1606 | return -1; |
| 1607 | |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 1608 | dso->adjust_symbols = 0; |
Arnaldo Carvalho de Melo | f5812a7 | 2009-06-30 11:43:17 -0300 | [diff] [blame] | 1609 | |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 1610 | if (strncmp(dso->name, "/tmp/perf-", 10) == 0) { |
Pekka Enberg | 981c125 | 2011-08-09 22:54:18 +0300 | [diff] [blame] | 1611 | struct stat st; |
| 1612 | |
Vasiliy Kulikov | e9b52ef | 2011-08-12 00:55:37 +0400 | [diff] [blame] | 1613 | if (lstat(dso->name, &st) < 0) |
Pekka Enberg | 981c125 | 2011-08-09 22:54:18 +0300 | [diff] [blame] | 1614 | return -1; |
| 1615 | |
| 1616 | if (st.st_uid && (st.st_uid != geteuid())) { |
| 1617 | pr_warning("File %s not owned by current user or root, " |
| 1618 | "ignoring it.\n", dso->name); |
| 1619 | return -1; |
| 1620 | } |
| 1621 | |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 1622 | ret = dso__load_perf_map(dso, map, filter); |
| 1623 | dso->symtab_type = ret > 0 ? SYMTAB__JAVA_JIT : |
Arnaldo Carvalho de Melo | 878b439 | 2011-03-11 13:13:36 -0300 | [diff] [blame] | 1624 | SYMTAB__NOT_FOUND; |
Arnaldo Carvalho de Melo | 94cb9e3 | 2009-08-06 14:43:17 -0300 | [diff] [blame] | 1625 | return ret; |
| 1626 | } |
| 1627 | |
Dave Martin | 6da80ce | 2010-07-30 09:50:09 -0300 | [diff] [blame] | 1628 | /* Iterate over candidate debug images. |
| 1629 | * On the first pass, only load images if they have a full symtab. |
| 1630 | * Failing that, do a second pass where we accept .dynsym also |
| 1631 | */ |
Arnaldo Carvalho de Melo | 60e4b10 | 2011-03-22 15:42:14 -0300 | [diff] [blame] | 1632 | want_symtab = 1; |
| 1633 | restart: |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 1634 | for (dso->symtab_type = SYMTAB__BUILD_ID_CACHE; |
| 1635 | dso->symtab_type != SYMTAB__NOT_FOUND; |
| 1636 | dso->symtab_type++) { |
| 1637 | switch (dso->symtab_type) { |
Arnaldo Carvalho de Melo | 878b439 | 2011-03-11 13:13:36 -0300 | [diff] [blame] | 1638 | case SYMTAB__BUILD_ID_CACHE: |
David Ahern | ec5761e | 2010-12-09 13:27:07 -0700 | [diff] [blame] | 1639 | /* skip the locally configured cache if a symfs is given */ |
| 1640 | if (symbol_conf.symfs[0] || |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 1641 | (dso__build_id_filename(dso, name, size) == NULL)) { |
Dave Martin | 6da80ce | 2010-07-30 09:50:09 -0300 | [diff] [blame] | 1642 | continue; |
David Ahern | ec5761e | 2010-12-09 13:27:07 -0700 | [diff] [blame] | 1643 | } |
Dave Martin | 6da80ce | 2010-07-30 09:50:09 -0300 | [diff] [blame] | 1644 | break; |
Arnaldo Carvalho de Melo | 878b439 | 2011-03-11 13:13:36 -0300 | [diff] [blame] | 1645 | case SYMTAB__FEDORA_DEBUGINFO: |
David Ahern | ec5761e | 2010-12-09 13:27:07 -0700 | [diff] [blame] | 1646 | snprintf(name, size, "%s/usr/lib/debug%s.debug", |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 1647 | symbol_conf.symfs, dso->long_name); |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 1648 | break; |
Arnaldo Carvalho de Melo | 878b439 | 2011-03-11 13:13:36 -0300 | [diff] [blame] | 1649 | case SYMTAB__UBUNTU_DEBUGINFO: |
David Ahern | ec5761e | 2010-12-09 13:27:07 -0700 | [diff] [blame] | 1650 | snprintf(name, size, "%s/usr/lib/debug%s", |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 1651 | symbol_conf.symfs, dso->long_name); |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 1652 | break; |
Arnaldo Carvalho de Melo | 878b439 | 2011-03-11 13:13:36 -0300 | [diff] [blame] | 1653 | case SYMTAB__BUILDID_DEBUGINFO: { |
Dave Martin | 6da80ce | 2010-07-30 09:50:09 -0300 | [diff] [blame] | 1654 | char build_id_hex[BUILD_ID_SIZE * 2 + 1]; |
| 1655 | |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 1656 | if (!dso->has_build_id) |
Dave Martin | 6da80ce | 2010-07-30 09:50:09 -0300 | [diff] [blame] | 1657 | continue; |
| 1658 | |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 1659 | build_id__sprintf(dso->build_id, |
| 1660 | sizeof(dso->build_id), |
Dave Martin | 6da80ce | 2010-07-30 09:50:09 -0300 | [diff] [blame] | 1661 | build_id_hex); |
| 1662 | snprintf(name, size, |
David Ahern | ec5761e | 2010-12-09 13:27:07 -0700 | [diff] [blame] | 1663 | "%s/usr/lib/debug/.build-id/%.2s/%s.debug", |
| 1664 | symbol_conf.symfs, build_id_hex, build_id_hex + 2); |
Arnaldo Carvalho de Melo | 4d1e00a | 2009-08-05 19:02:49 -0300 | [diff] [blame] | 1665 | } |
Dave Martin | 6da80ce | 2010-07-30 09:50:09 -0300 | [diff] [blame] | 1666 | break; |
Arnaldo Carvalho de Melo | 878b439 | 2011-03-11 13:13:36 -0300 | [diff] [blame] | 1667 | case SYMTAB__SYSTEM_PATH_DSO: |
David Ahern | ec5761e | 2010-12-09 13:27:07 -0700 | [diff] [blame] | 1668 | snprintf(name, size, "%s%s", |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 1669 | symbol_conf.symfs, dso->long_name); |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 1670 | break; |
Arnaldo Carvalho de Melo | 878b439 | 2011-03-11 13:13:36 -0300 | [diff] [blame] | 1671 | case SYMTAB__GUEST_KMODULE: |
Kyle McMartin | fb7d0b3 | 2011-01-24 11:13:04 -0500 | [diff] [blame] | 1672 | if (map->groups && machine) |
| 1673 | root_dir = machine->root_dir; |
Zhang, Yanmin | a1645ce | 2010-04-19 13:32:50 +0800 | [diff] [blame] | 1674 | else |
| 1675 | root_dir = ""; |
David Ahern | ec5761e | 2010-12-09 13:27:07 -0700 | [diff] [blame] | 1676 | snprintf(name, size, "%s%s%s", symbol_conf.symfs, |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 1677 | root_dir, dso->long_name); |
David Ahern | ec5761e | 2010-12-09 13:27:07 -0700 | [diff] [blame] | 1678 | break; |
| 1679 | |
Arnaldo Carvalho de Melo | 878b439 | 2011-03-11 13:13:36 -0300 | [diff] [blame] | 1680 | case SYMTAB__SYSTEM_PATH_KMODULE: |
David Ahern | ec5761e | 2010-12-09 13:27:07 -0700 | [diff] [blame] | 1681 | snprintf(name, size, "%s%s", symbol_conf.symfs, |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 1682 | dso->long_name); |
Zhang, Yanmin | a1645ce | 2010-04-19 13:32:50 +0800 | [diff] [blame] | 1683 | break; |
Arnaldo Carvalho de Melo | 60e4b10 | 2011-03-22 15:42:14 -0300 | [diff] [blame] | 1684 | default:; |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 1685 | } |
Dave Martin | 6da80ce | 2010-07-30 09:50:09 -0300 | [diff] [blame] | 1686 | |
| 1687 | /* Name is now the name of the next image to try */ |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 1688 | fd = open(name, O_RDONLY); |
Dave Martin | 6da80ce | 2010-07-30 09:50:09 -0300 | [diff] [blame] | 1689 | if (fd < 0) |
| 1690 | continue; |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 1691 | |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 1692 | ret = dso__load_sym(dso, map, name, fd, filter, 0, |
Dave Martin | 6da80ce | 2010-07-30 09:50:09 -0300 | [diff] [blame] | 1693 | want_symtab); |
| 1694 | close(fd); |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 1695 | |
Dave Martin | 6da80ce | 2010-07-30 09:50:09 -0300 | [diff] [blame] | 1696 | /* |
| 1697 | * Some people seem to have debuginfo files _WITHOUT_ debug |
| 1698 | * info!?!? |
| 1699 | */ |
| 1700 | if (!ret) |
| 1701 | continue; |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 1702 | |
Dave Martin | 6da80ce | 2010-07-30 09:50:09 -0300 | [diff] [blame] | 1703 | if (ret > 0) { |
Jiri Olsa | 33ff581 | 2012-04-18 15:46:58 +0200 | [diff] [blame] | 1704 | int nr_plt; |
| 1705 | |
| 1706 | nr_plt = dso__synthesize_plt_symbols(dso, name, map, filter); |
Dave Martin | 6da80ce | 2010-07-30 09:50:09 -0300 | [diff] [blame] | 1707 | if (nr_plt > 0) |
| 1708 | ret += nr_plt; |
| 1709 | break; |
| 1710 | } |
Arnaldo Carvalho de Melo | a25e46c | 2009-07-11 12:18:36 -0300 | [diff] [blame] | 1711 | } |
Dave Martin | 6da80ce | 2010-07-30 09:50:09 -0300 | [diff] [blame] | 1712 | |
Arnaldo Carvalho de Melo | 60e4b10 | 2011-03-22 15:42:14 -0300 | [diff] [blame] | 1713 | /* |
| 1714 | * If we wanted a full symtab but no image had one, |
| 1715 | * relax our requirements and repeat the search. |
| 1716 | */ |
| 1717 | if (ret <= 0 && want_symtab) { |
| 1718 | want_symtab = 0; |
| 1719 | goto restart; |
| 1720 | } |
| 1721 | |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 1722 | free(name); |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 1723 | if (ret < 0 && strstr(dso->name, " (deleted)") != NULL) |
Arnaldo Carvalho de Melo | 1340e6b | 2009-08-11 17:04:36 -0300 | [diff] [blame] | 1724 | return 0; |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 1725 | return ret; |
| 1726 | } |
| 1727 | |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 1728 | struct map *map_groups__find_by_name(struct map_groups *mg, |
Arnaldo Carvalho de Melo | 79406cd | 2009-12-11 18:50:22 -0200 | [diff] [blame] | 1729 | enum map_type type, const char *name) |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1730 | { |
| 1731 | struct rb_node *nd; |
| 1732 | |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 1733 | for (nd = rb_first(&mg->maps[type]); nd; nd = rb_next(nd)) { |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1734 | struct map *map = rb_entry(nd, struct map, rb_node); |
| 1735 | |
Arnaldo Carvalho de Melo | b7cece7 | 2010-01-13 13:22:17 -0200 | [diff] [blame] | 1736 | if (map->dso && strcmp(map->dso->short_name, name) == 0) |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1737 | return map; |
| 1738 | } |
| 1739 | |
| 1740 | return NULL; |
| 1741 | } |
| 1742 | |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 1743 | static int dso__kernel_module_get_build_id(struct dso *dso, |
| 1744 | const char *root_dir) |
Arnaldo Carvalho de Melo | b7cece7 | 2010-01-13 13:22:17 -0200 | [diff] [blame] | 1745 | { |
| 1746 | char filename[PATH_MAX]; |
| 1747 | /* |
| 1748 | * kernel module short names are of the form "[module]" and |
| 1749 | * we need just "module" here. |
| 1750 | */ |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 1751 | const char *name = dso->short_name + 1; |
Arnaldo Carvalho de Melo | b7cece7 | 2010-01-13 13:22:17 -0200 | [diff] [blame] | 1752 | |
| 1753 | snprintf(filename, sizeof(filename), |
Zhang, Yanmin | a1645ce | 2010-04-19 13:32:50 +0800 | [diff] [blame] | 1754 | "%s/sys/module/%.*s/notes/.note.gnu.build-id", |
| 1755 | root_dir, (int)strlen(name) - 1, name); |
Arnaldo Carvalho de Melo | b7cece7 | 2010-01-13 13:22:17 -0200 | [diff] [blame] | 1756 | |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 1757 | if (sysfs__read_build_id(filename, dso->build_id, |
| 1758 | sizeof(dso->build_id)) == 0) |
| 1759 | dso->has_build_id = true; |
Arnaldo Carvalho de Melo | b7cece7 | 2010-01-13 13:22:17 -0200 | [diff] [blame] | 1760 | |
| 1761 | return 0; |
| 1762 | } |
| 1763 | |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 1764 | static int map_groups__set_modules_path_dir(struct map_groups *mg, |
Zhang, Yanmin | a1645ce | 2010-04-19 13:32:50 +0800 | [diff] [blame] | 1765 | const char *dir_name) |
Mike Galbraith | 6cfcc53 | 2009-07-02 08:08:36 +0200 | [diff] [blame] | 1766 | { |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1767 | struct dirent *dent; |
Arnaldo Carvalho de Melo | 5aab621 | 2010-03-25 19:59:00 -0300 | [diff] [blame] | 1768 | DIR *dir = opendir(dir_name); |
Gui Jianfeng | 7453434 | 2010-06-24 15:04:02 +0800 | [diff] [blame] | 1769 | int ret = 0; |
Mike Galbraith | 6cfcc53 | 2009-07-02 08:08:36 +0200 | [diff] [blame] | 1770 | |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1771 | if (!dir) { |
Arnaldo Carvalho de Melo | 5aab621 | 2010-03-25 19:59:00 -0300 | [diff] [blame] | 1772 | pr_debug("%s: cannot open %s dir\n", __func__, dir_name); |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1773 | return -1; |
Mike Galbraith | 6cfcc53 | 2009-07-02 08:08:36 +0200 | [diff] [blame] | 1774 | } |
| 1775 | |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1776 | while ((dent = readdir(dir)) != NULL) { |
| 1777 | char path[PATH_MAX]; |
Zhang, Yanmin | a1645ce | 2010-04-19 13:32:50 +0800 | [diff] [blame] | 1778 | struct stat st; |
Mike Galbraith | 6cfcc53 | 2009-07-02 08:08:36 +0200 | [diff] [blame] | 1779 | |
Zhang, Yanmin | a1645ce | 2010-04-19 13:32:50 +0800 | [diff] [blame] | 1780 | /*sshfs might return bad dent->d_type, so we have to stat*/ |
Namhyung Kim | 2b600f9 | 2011-12-13 00:16:51 +0900 | [diff] [blame] | 1781 | snprintf(path, sizeof(path), "%s/%s", dir_name, dent->d_name); |
Zhang, Yanmin | a1645ce | 2010-04-19 13:32:50 +0800 | [diff] [blame] | 1782 | if (stat(path, &st)) |
| 1783 | continue; |
| 1784 | |
| 1785 | if (S_ISDIR(st.st_mode)) { |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1786 | if (!strcmp(dent->d_name, ".") || |
| 1787 | !strcmp(dent->d_name, "..")) |
| 1788 | continue; |
Mike Galbraith | 6cfcc53 | 2009-07-02 08:08:36 +0200 | [diff] [blame] | 1789 | |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 1790 | ret = map_groups__set_modules_path_dir(mg, path); |
Gui Jianfeng | 7453434 | 2010-06-24 15:04:02 +0800 | [diff] [blame] | 1791 | if (ret < 0) |
| 1792 | goto out; |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1793 | } else { |
| 1794 | char *dot = strrchr(dent->d_name, '.'), |
| 1795 | dso_name[PATH_MAX]; |
| 1796 | struct map *map; |
Arnaldo Carvalho de Melo | cfc10d3 | 2009-11-17 15:40:53 -0200 | [diff] [blame] | 1797 | char *long_name; |
Mike Galbraith | 6cfcc53 | 2009-07-02 08:08:36 +0200 | [diff] [blame] | 1798 | |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1799 | if (dot == NULL || strcmp(dot, ".ko")) |
| 1800 | continue; |
| 1801 | snprintf(dso_name, sizeof(dso_name), "[%.*s]", |
| 1802 | (int)(dot - dent->d_name), dent->d_name); |
Mike Galbraith | 6cfcc53 | 2009-07-02 08:08:36 +0200 | [diff] [blame] | 1803 | |
Arnaldo Carvalho de Melo | a2a99e8 | 2009-10-05 14:26:18 -0300 | [diff] [blame] | 1804 | strxfrchar(dso_name, '-', '_'); |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 1805 | map = map_groups__find_by_name(mg, MAP__FUNCTION, |
| 1806 | dso_name); |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1807 | if (map == NULL) |
| 1808 | continue; |
Mike Galbraith | 6cfcc53 | 2009-07-02 08:08:36 +0200 | [diff] [blame] | 1809 | |
Arnaldo Carvalho de Melo | cfc10d3 | 2009-11-17 15:40:53 -0200 | [diff] [blame] | 1810 | long_name = strdup(path); |
Gui Jianfeng | 7453434 | 2010-06-24 15:04:02 +0800 | [diff] [blame] | 1811 | if (long_name == NULL) { |
| 1812 | ret = -1; |
| 1813 | goto out; |
| 1814 | } |
Arnaldo Carvalho de Melo | cfc10d3 | 2009-11-17 15:40:53 -0200 | [diff] [blame] | 1815 | dso__set_long_name(map->dso, long_name); |
Arnaldo Carvalho de Melo | 6e40625 | 2010-07-29 15:11:30 -0300 | [diff] [blame] | 1816 | map->dso->lname_alloc = 1; |
Zhang, Yanmin | a1645ce | 2010-04-19 13:32:50 +0800 | [diff] [blame] | 1817 | dso__kernel_module_get_build_id(map->dso, ""); |
Mike Galbraith | 6cfcc53 | 2009-07-02 08:08:36 +0200 | [diff] [blame] | 1818 | } |
Mike Galbraith | 6cfcc53 | 2009-07-02 08:08:36 +0200 | [diff] [blame] | 1819 | } |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1820 | |
Gui Jianfeng | 7453434 | 2010-06-24 15:04:02 +0800 | [diff] [blame] | 1821 | out: |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1822 | closedir(dir); |
Gui Jianfeng | 7453434 | 2010-06-24 15:04:02 +0800 | [diff] [blame] | 1823 | return ret; |
Mike Galbraith | 6cfcc53 | 2009-07-02 08:08:36 +0200 | [diff] [blame] | 1824 | } |
| 1825 | |
Zhang, Yanmin | a1645ce | 2010-04-19 13:32:50 +0800 | [diff] [blame] | 1826 | static char *get_kernel_version(const char *root_dir) |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1827 | { |
Zhang, Yanmin | a1645ce | 2010-04-19 13:32:50 +0800 | [diff] [blame] | 1828 | char version[PATH_MAX]; |
| 1829 | FILE *file; |
| 1830 | char *name, *tmp; |
| 1831 | const char *prefix = "Linux version "; |
| 1832 | |
| 1833 | sprintf(version, "%s/proc/version", root_dir); |
| 1834 | file = fopen(version, "r"); |
| 1835 | if (!file) |
| 1836 | return NULL; |
| 1837 | |
| 1838 | version[0] = '\0'; |
| 1839 | tmp = fgets(version, sizeof(version), file); |
| 1840 | fclose(file); |
| 1841 | |
| 1842 | name = strstr(version, prefix); |
| 1843 | if (!name) |
| 1844 | return NULL; |
| 1845 | name += strlen(prefix); |
| 1846 | tmp = strchr(name, ' '); |
| 1847 | if (tmp) |
| 1848 | *tmp = '\0'; |
| 1849 | |
| 1850 | return strdup(name); |
| 1851 | } |
| 1852 | |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 1853 | static int machine__set_modules_path(struct machine *machine) |
Zhang, Yanmin | a1645ce | 2010-04-19 13:32:50 +0800 | [diff] [blame] | 1854 | { |
| 1855 | char *version; |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1856 | char modules_path[PATH_MAX]; |
| 1857 | |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 1858 | version = get_kernel_version(machine->root_dir); |
Zhang, Yanmin | a1645ce | 2010-04-19 13:32:50 +0800 | [diff] [blame] | 1859 | if (!version) |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1860 | return -1; |
| 1861 | |
Zhang, Yanmin | a1645ce | 2010-04-19 13:32:50 +0800 | [diff] [blame] | 1862 | snprintf(modules_path, sizeof(modules_path), "%s/lib/modules/%s/kernel", |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 1863 | machine->root_dir, version); |
Zhang, Yanmin | a1645ce | 2010-04-19 13:32:50 +0800 | [diff] [blame] | 1864 | free(version); |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1865 | |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 1866 | return map_groups__set_modules_path_dir(&machine->kmaps, modules_path); |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1867 | } |
| 1868 | |
| 1869 | /* |
| 1870 | * Constructor variant for modules (where we know from /proc/modules where |
| 1871 | * they are loaded) and for vmlinux, where only after we load all the |
| 1872 | * symbols we'll know where it starts and ends. |
| 1873 | */ |
Arnaldo Carvalho de Melo | 3610583 | 2009-11-27 16:29:16 -0200 | [diff] [blame] | 1874 | 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] | 1875 | { |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 1876 | struct map *map = calloc(1, (sizeof(*map) + |
| 1877 | (dso->kernel ? sizeof(struct kmap) : 0))); |
| 1878 | if (map != NULL) { |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1879 | /* |
Arnaldo Carvalho de Melo | afb7b4f | 2009-10-30 16:28:23 -0200 | [diff] [blame] | 1880 | * ->end will be filled after we load all the symbols |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1881 | */ |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 1882 | map__init(map, type, start, 0, 0, dso); |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1883 | } |
Arnaldo Carvalho de Melo | afb7b4f | 2009-10-30 16:28:23 -0200 | [diff] [blame] | 1884 | |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 1885 | return map; |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1886 | } |
| 1887 | |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 1888 | struct map *machine__new_module(struct machine *machine, u64 start, |
Arnaldo Carvalho de Melo | d28c622 | 2010-04-27 21:20:43 -0300 | [diff] [blame] | 1889 | const char *filename) |
Arnaldo Carvalho de Melo | b7cece7 | 2010-01-13 13:22:17 -0200 | [diff] [blame] | 1890 | { |
| 1891 | struct map *map; |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 1892 | struct dso *dso = __dsos__findnew(&machine->kernel_dsos, filename); |
Arnaldo Carvalho de Melo | b7cece7 | 2010-01-13 13:22:17 -0200 | [diff] [blame] | 1893 | |
| 1894 | if (dso == NULL) |
| 1895 | return NULL; |
| 1896 | |
| 1897 | map = map__new2(start, dso, MAP__FUNCTION); |
| 1898 | if (map == NULL) |
| 1899 | return NULL; |
| 1900 | |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 1901 | if (machine__is_host(machine)) |
Arnaldo Carvalho de Melo | 878b439 | 2011-03-11 13:13:36 -0300 | [diff] [blame] | 1902 | dso->symtab_type = SYMTAB__SYSTEM_PATH_KMODULE; |
Zhang, Yanmin | a1645ce | 2010-04-19 13:32:50 +0800 | [diff] [blame] | 1903 | else |
Arnaldo Carvalho de Melo | 878b439 | 2011-03-11 13:13:36 -0300 | [diff] [blame] | 1904 | dso->symtab_type = SYMTAB__GUEST_KMODULE; |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 1905 | map_groups__insert(&machine->kmaps, map); |
Arnaldo Carvalho de Melo | b7cece7 | 2010-01-13 13:22:17 -0200 | [diff] [blame] | 1906 | return map; |
| 1907 | } |
| 1908 | |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 1909 | static int machine__create_modules(struct machine *machine) |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1910 | { |
| 1911 | char *line = NULL; |
| 1912 | size_t n; |
Zhang, Yanmin | a1645ce | 2010-04-19 13:32:50 +0800 | [diff] [blame] | 1913 | FILE *file; |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1914 | struct map *map; |
Zhang, Yanmin | a1645ce | 2010-04-19 13:32:50 +0800 | [diff] [blame] | 1915 | const char *modules; |
| 1916 | char path[PATH_MAX]; |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1917 | |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 1918 | if (machine__is_default_guest(machine)) |
Zhang, Yanmin | a1645ce | 2010-04-19 13:32:50 +0800 | [diff] [blame] | 1919 | modules = symbol_conf.default_guest_modules; |
| 1920 | else { |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 1921 | sprintf(path, "%s/proc/modules", machine->root_dir); |
Zhang, Yanmin | a1645ce | 2010-04-19 13:32:50 +0800 | [diff] [blame] | 1922 | modules = path; |
| 1923 | } |
| 1924 | |
Arnaldo Carvalho de Melo | ec80fde | 2011-05-26 09:53:51 -0300 | [diff] [blame] | 1925 | if (symbol__restricted_filename(path, "/proc/modules")) |
| 1926 | return -1; |
| 1927 | |
Zhang, Yanmin | a1645ce | 2010-04-19 13:32:50 +0800 | [diff] [blame] | 1928 | file = fopen(modules, "r"); |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1929 | if (file == NULL) |
| 1930 | return -1; |
| 1931 | |
| 1932 | while (!feof(file)) { |
| 1933 | char name[PATH_MAX]; |
| 1934 | u64 start; |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1935 | char *sep; |
| 1936 | int line_len; |
| 1937 | |
| 1938 | line_len = getline(&line, &n, file); |
| 1939 | if (line_len < 0) |
| 1940 | break; |
| 1941 | |
| 1942 | if (!line) |
| 1943 | goto out_failure; |
| 1944 | |
| 1945 | line[--line_len] = '\0'; /* \n */ |
| 1946 | |
| 1947 | sep = strrchr(line, 'x'); |
| 1948 | if (sep == NULL) |
| 1949 | continue; |
| 1950 | |
| 1951 | hex2u64(sep + 1, &start); |
| 1952 | |
| 1953 | sep = strchr(line, ' '); |
| 1954 | if (sep == NULL) |
| 1955 | continue; |
| 1956 | |
| 1957 | *sep = '\0'; |
| 1958 | |
| 1959 | snprintf(name, sizeof(name), "[%s]", line); |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 1960 | map = machine__new_module(machine, start, name); |
Arnaldo Carvalho de Melo | b7cece7 | 2010-01-13 13:22:17 -0200 | [diff] [blame] | 1961 | if (map == NULL) |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1962 | goto out_delete_line; |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 1963 | dso__kernel_module_get_build_id(map->dso, machine->root_dir); |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1964 | } |
| 1965 | |
| 1966 | free(line); |
| 1967 | fclose(file); |
| 1968 | |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 1969 | return machine__set_modules_path(machine); |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1970 | |
| 1971 | out_delete_line: |
| 1972 | free(line); |
| 1973 | out_failure: |
| 1974 | return -1; |
| 1975 | } |
| 1976 | |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 1977 | int dso__load_vmlinux(struct dso *dso, struct map *map, |
Franck Bui-Huu | fd930ff | 2010-12-10 14:06:03 +0100 | [diff] [blame] | 1978 | const char *vmlinux, symbol_filter_t filter) |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 1979 | { |
Arnaldo Carvalho de Melo | fbd733b | 2009-11-20 20:51:28 -0200 | [diff] [blame] | 1980 | int err = -1, fd; |
David Ahern | ec5761e | 2010-12-09 13:27:07 -0700 | [diff] [blame] | 1981 | char symfs_vmlinux[PATH_MAX]; |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 1982 | |
Arnaldo Carvalho de Melo | a639dc6 | 2011-02-28 13:54:38 -0300 | [diff] [blame] | 1983 | snprintf(symfs_vmlinux, sizeof(symfs_vmlinux), "%s%s", |
David Ahern | ec5761e | 2010-12-09 13:27:07 -0700 | [diff] [blame] | 1984 | symbol_conf.symfs, vmlinux); |
| 1985 | fd = open(symfs_vmlinux, O_RDONLY); |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 1986 | if (fd < 0) |
| 1987 | return -1; |
| 1988 | |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 1989 | dso__set_long_name(dso, (char *)vmlinux); |
| 1990 | dso__set_loaded(dso, map->type); |
| 1991 | err = dso__load_sym(dso, map, symfs_vmlinux, fd, filter, 0, 0); |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 1992 | close(fd); |
| 1993 | |
Arnaldo Carvalho de Melo | 3846df2 | 2010-02-22 16:15:39 -0300 | [diff] [blame] | 1994 | if (err > 0) |
David Ahern | ec5761e | 2010-12-09 13:27:07 -0700 | [diff] [blame] | 1995 | pr_debug("Using %s for symbols\n", symfs_vmlinux); |
Arnaldo Carvalho de Melo | 3846df2 | 2010-02-22 16:15:39 -0300 | [diff] [blame] | 1996 | |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 1997 | return err; |
| 1998 | } |
| 1999 | |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 2000 | int dso__load_vmlinux_path(struct dso *dso, struct map *map, |
Arnaldo Carvalho de Melo | 9de89fe | 2010-02-03 16:52:00 -0200 | [diff] [blame] | 2001 | symbol_filter_t filter) |
Arnaldo Carvalho de Melo | a19afe4 | 2010-01-27 21:05:50 -0200 | [diff] [blame] | 2002 | { |
| 2003 | int i, err = 0; |
Arnaldo Carvalho de Melo | 5ad90e4 | 2010-05-26 13:26:02 -0300 | [diff] [blame] | 2004 | char *filename; |
Arnaldo Carvalho de Melo | a19afe4 | 2010-01-27 21:05:50 -0200 | [diff] [blame] | 2005 | |
| 2006 | pr_debug("Looking at the vmlinux_path (%d entries long)\n", |
Arnaldo Carvalho de Melo | 5ad90e4 | 2010-05-26 13:26:02 -0300 | [diff] [blame] | 2007 | vmlinux_path__nr_entries + 1); |
| 2008 | |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 2009 | filename = dso__build_id_filename(dso, NULL, 0); |
Arnaldo Carvalho de Melo | 5ad90e4 | 2010-05-26 13:26:02 -0300 | [diff] [blame] | 2010 | if (filename != NULL) { |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 2011 | err = dso__load_vmlinux(dso, map, filename, filter); |
Arnaldo Carvalho de Melo | 5ad90e4 | 2010-05-26 13:26:02 -0300 | [diff] [blame] | 2012 | if (err > 0) { |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 2013 | dso__set_long_name(dso, filename); |
Arnaldo Carvalho de Melo | 5ad90e4 | 2010-05-26 13:26:02 -0300 | [diff] [blame] | 2014 | goto out; |
| 2015 | } |
| 2016 | free(filename); |
| 2017 | } |
Arnaldo Carvalho de Melo | a19afe4 | 2010-01-27 21:05:50 -0200 | [diff] [blame] | 2018 | |
| 2019 | for (i = 0; i < vmlinux_path__nr_entries; ++i) { |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 2020 | err = dso__load_vmlinux(dso, map, vmlinux_path[i], filter); |
Arnaldo Carvalho de Melo | a19afe4 | 2010-01-27 21:05:50 -0200 | [diff] [blame] | 2021 | if (err > 0) { |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 2022 | dso__set_long_name(dso, strdup(vmlinux_path[i])); |
Arnaldo Carvalho de Melo | a19afe4 | 2010-01-27 21:05:50 -0200 | [diff] [blame] | 2023 | break; |
| 2024 | } |
| 2025 | } |
Arnaldo Carvalho de Melo | 5ad90e4 | 2010-05-26 13:26:02 -0300 | [diff] [blame] | 2026 | out: |
Arnaldo Carvalho de Melo | a19afe4 | 2010-01-27 21:05:50 -0200 | [diff] [blame] | 2027 | return err; |
| 2028 | } |
| 2029 | |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 2030 | static int dso__load_kernel_sym(struct dso *dso, struct map *map, |
Arnaldo Carvalho de Melo | 9de89fe | 2010-02-03 16:52:00 -0200 | [diff] [blame] | 2031 | symbol_filter_t filter) |
Arnaldo Carvalho de Melo | a827c87 | 2009-05-28 14:55:19 -0300 | [diff] [blame] | 2032 | { |
Arnaldo Carvalho de Melo | cc612d8 | 2009-11-23 16:39:10 -0200 | [diff] [blame] | 2033 | int err; |
Arnaldo Carvalho de Melo | 9e20144 | 2010-01-14 18:30:06 -0200 | [diff] [blame] | 2034 | const char *kallsyms_filename = NULL; |
| 2035 | char *kallsyms_allocated_filename = NULL; |
Arnaldo Carvalho de Melo | dc8d6ab | 2010-01-19 10:36:14 -0200 | [diff] [blame] | 2036 | /* |
David Ahern | b226a5a7 | 2010-12-07 19:39:46 -0700 | [diff] [blame] | 2037 | * Step 1: if the user specified a kallsyms or vmlinux filename, use |
| 2038 | * it and only it, reporting errors to the user if it cannot be used. |
Arnaldo Carvalho de Melo | dc8d6ab | 2010-01-19 10:36:14 -0200 | [diff] [blame] | 2039 | * |
| 2040 | * For instance, try to analyse an ARM perf.data file _without_ a |
| 2041 | * build-id, or if the user specifies the wrong path to the right |
| 2042 | * vmlinux file, obviously we can't fallback to another vmlinux (a |
| 2043 | * x86_86 one, on the machine where analysis is being performed, say), |
| 2044 | * or worse, /proc/kallsyms. |
| 2045 | * |
| 2046 | * If the specified file _has_ a build-id and there is a build-id |
| 2047 | * section in the perf.data file, we will still do the expected |
| 2048 | * validation in dso__load_vmlinux and will bail out if they don't |
| 2049 | * match. |
| 2050 | */ |
David Ahern | b226a5a7 | 2010-12-07 19:39:46 -0700 | [diff] [blame] | 2051 | if (symbol_conf.kallsyms_name != NULL) { |
| 2052 | kallsyms_filename = symbol_conf.kallsyms_name; |
| 2053 | goto do_kallsyms; |
| 2054 | } |
| 2055 | |
Arnaldo Carvalho de Melo | dc8d6ab | 2010-01-19 10:36:14 -0200 | [diff] [blame] | 2056 | if (symbol_conf.vmlinux_name != NULL) { |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 2057 | err = dso__load_vmlinux(dso, map, |
Arnaldo Carvalho de Melo | dc8d6ab | 2010-01-19 10:36:14 -0200 | [diff] [blame] | 2058 | symbol_conf.vmlinux_name, filter); |
Arnaldo Carvalho de Melo | e7dadc0 | 2010-06-03 18:35:55 -0300 | [diff] [blame] | 2059 | if (err > 0) { |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 2060 | dso__set_long_name(dso, |
Arnaldo Carvalho de Melo | e7dadc0 | 2010-06-03 18:35:55 -0300 | [diff] [blame] | 2061 | strdup(symbol_conf.vmlinux_name)); |
| 2062 | goto out_fixup; |
| 2063 | } |
| 2064 | return err; |
Arnaldo Carvalho de Melo | dc8d6ab | 2010-01-19 10:36:14 -0200 | [diff] [blame] | 2065 | } |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 2066 | |
Arnaldo Carvalho de Melo | cc612d8 | 2009-11-23 16:39:10 -0200 | [diff] [blame] | 2067 | if (vmlinux_path != NULL) { |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 2068 | err = dso__load_vmlinux_path(dso, map, filter); |
Arnaldo Carvalho de Melo | a19afe4 | 2010-01-27 21:05:50 -0200 | [diff] [blame] | 2069 | if (err > 0) |
| 2070 | goto out_fixup; |
Arnaldo Carvalho de Melo | cc612d8 | 2009-11-23 16:39:10 -0200 | [diff] [blame] | 2071 | } |
| 2072 | |
David Ahern | ec5761e | 2010-12-09 13:27:07 -0700 | [diff] [blame] | 2073 | /* do not try local files if a symfs was given */ |
| 2074 | if (symbol_conf.symfs[0] != 0) |
| 2075 | return -1; |
| 2076 | |
Arnaldo Carvalho de Melo | b7cece7 | 2010-01-13 13:22:17 -0200 | [diff] [blame] | 2077 | /* |
| 2078 | * Say the kernel DSO was created when processing the build-id header table, |
| 2079 | * we have a build-id, so check if it is the same as the running kernel, |
| 2080 | * using it if it is. |
| 2081 | */ |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 2082 | if (dso->has_build_id) { |
Arnaldo Carvalho de Melo | b7cece7 | 2010-01-13 13:22:17 -0200 | [diff] [blame] | 2083 | u8 kallsyms_build_id[BUILD_ID_SIZE]; |
Arnaldo Carvalho de Melo | 9e20144 | 2010-01-14 18:30:06 -0200 | [diff] [blame] | 2084 | char sbuild_id[BUILD_ID_SIZE * 2 + 1]; |
Arnaldo Carvalho de Melo | b7cece7 | 2010-01-13 13:22:17 -0200 | [diff] [blame] | 2085 | |
| 2086 | if (sysfs__read_build_id("/sys/kernel/notes", kallsyms_build_id, |
Arnaldo Carvalho de Melo | 8d0591f | 2010-01-14 18:30:05 -0200 | [diff] [blame] | 2087 | sizeof(kallsyms_build_id)) == 0) { |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 2088 | if (dso__build_id_equal(dso, kallsyms_build_id)) { |
Arnaldo Carvalho de Melo | 9e20144 | 2010-01-14 18:30:06 -0200 | [diff] [blame] | 2089 | kallsyms_filename = "/proc/kallsyms"; |
Arnaldo Carvalho de Melo | 8d0591f | 2010-01-14 18:30:05 -0200 | [diff] [blame] | 2090 | goto do_kallsyms; |
Arnaldo Carvalho de Melo | 9e20144 | 2010-01-14 18:30:06 -0200 | [diff] [blame] | 2091 | } |
Arnaldo Carvalho de Melo | 8d0591f | 2010-01-14 18:30:05 -0200 | [diff] [blame] | 2092 | } |
Arnaldo Carvalho de Melo | dc8d6ab | 2010-01-19 10:36:14 -0200 | [diff] [blame] | 2093 | /* |
| 2094 | * Now look if we have it on the build-id cache in |
| 2095 | * $HOME/.debug/[kernel.kallsyms]. |
| 2096 | */ |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 2097 | build_id__sprintf(dso->build_id, sizeof(dso->build_id), |
Arnaldo Carvalho de Melo | 9e20144 | 2010-01-14 18:30:06 -0200 | [diff] [blame] | 2098 | sbuild_id); |
| 2099 | |
| 2100 | if (asprintf(&kallsyms_allocated_filename, |
| 2101 | "%s/.debug/[kernel.kallsyms]/%s", |
Arnaldo Carvalho de Melo | 3846df2 | 2010-02-22 16:15:39 -0300 | [diff] [blame] | 2102 | getenv("HOME"), sbuild_id) == -1) { |
| 2103 | pr_err("Not enough memory for kallsyms file lookup\n"); |
Arnaldo Carvalho de Melo | 8d0591f | 2010-01-14 18:30:05 -0200 | [diff] [blame] | 2104 | return -1; |
Arnaldo Carvalho de Melo | 3846df2 | 2010-02-22 16:15:39 -0300 | [diff] [blame] | 2105 | } |
Arnaldo Carvalho de Melo | 8d0591f | 2010-01-14 18:30:05 -0200 | [diff] [blame] | 2106 | |
Arnaldo Carvalho de Melo | 19fc2de | 2010-01-22 14:35:02 -0200 | [diff] [blame] | 2107 | kallsyms_filename = kallsyms_allocated_filename; |
| 2108 | |
Arnaldo Carvalho de Melo | dc8d6ab | 2010-01-19 10:36:14 -0200 | [diff] [blame] | 2109 | if (access(kallsyms_filename, F_OK)) { |
Arnaldo Carvalho de Melo | 3846df2 | 2010-02-22 16:15:39 -0300 | [diff] [blame] | 2110 | pr_err("No kallsyms or vmlinux with build-id %s " |
| 2111 | "was found\n", sbuild_id); |
Arnaldo Carvalho de Melo | dc8d6ab | 2010-01-19 10:36:14 -0200 | [diff] [blame] | 2112 | free(kallsyms_allocated_filename); |
| 2113 | return -1; |
| 2114 | } |
Arnaldo Carvalho de Melo | dc8d6ab | 2010-01-19 10:36:14 -0200 | [diff] [blame] | 2115 | } else { |
| 2116 | /* |
| 2117 | * Last resort, if we don't have a build-id and couldn't find |
| 2118 | * any vmlinux file, try the running kernel kallsyms table. |
| 2119 | */ |
| 2120 | kallsyms_filename = "/proc/kallsyms"; |
Arnaldo Carvalho de Melo | ef6ae72 | 2009-11-20 20:51:29 -0200 | [diff] [blame] | 2121 | } |
Arnaldo Carvalho de Melo | a827c87 | 2009-05-28 14:55:19 -0300 | [diff] [blame] | 2122 | |
Arnaldo Carvalho de Melo | dc8d6ab | 2010-01-19 10:36:14 -0200 | [diff] [blame] | 2123 | do_kallsyms: |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 2124 | err = dso__load_kallsyms(dso, kallsyms_filename, map, filter); |
Arnaldo Carvalho de Melo | 3846df2 | 2010-02-22 16:15:39 -0300 | [diff] [blame] | 2125 | if (err > 0) |
| 2126 | pr_debug("Using %s for symbols\n", kallsyms_filename); |
Arnaldo Carvalho de Melo | dc8d6ab | 2010-01-19 10:36:14 -0200 | [diff] [blame] | 2127 | free(kallsyms_allocated_filename); |
| 2128 | |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 2129 | if (err > 0) { |
Arnaldo Carvalho de Melo | cc612d8 | 2009-11-23 16:39:10 -0200 | [diff] [blame] | 2130 | out_fixup: |
Arnaldo Carvalho de Melo | e1c7c6a | 2010-01-22 14:35:01 -0200 | [diff] [blame] | 2131 | if (kallsyms_filename != NULL) |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 2132 | dso__set_long_name(dso, strdup("[kernel.kallsyms]")); |
Arnaldo Carvalho de Melo | 6a4694a | 2009-11-27 16:29:17 -0200 | [diff] [blame] | 2133 | map__fixup_start(map); |
| 2134 | map__fixup_end(map); |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 2135 | } |
Arnaldo Carvalho de Melo | 94cb9e3 | 2009-08-06 14:43:17 -0300 | [diff] [blame] | 2136 | |
Arnaldo Carvalho de Melo | a827c87 | 2009-05-28 14:55:19 -0300 | [diff] [blame] | 2137 | return err; |
| 2138 | } |
| 2139 | |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 2140 | static int dso__load_guest_kernel_sym(struct dso *dso, struct map *map, |
| 2141 | symbol_filter_t filter) |
Zhang, Yanmin | a1645ce | 2010-04-19 13:32:50 +0800 | [diff] [blame] | 2142 | { |
| 2143 | int err; |
| 2144 | const char *kallsyms_filename = NULL; |
Arnaldo Carvalho de Melo | 23346f2 | 2010-04-27 21:17:50 -0300 | [diff] [blame] | 2145 | struct machine *machine; |
Zhang, Yanmin | a1645ce | 2010-04-19 13:32:50 +0800 | [diff] [blame] | 2146 | char path[PATH_MAX]; |
| 2147 | |
| 2148 | if (!map->groups) { |
| 2149 | pr_debug("Guest kernel map hasn't the point to groups\n"); |
| 2150 | return -1; |
| 2151 | } |
Arnaldo Carvalho de Melo | 23346f2 | 2010-04-27 21:17:50 -0300 | [diff] [blame] | 2152 | machine = map->groups->machine; |
Zhang, Yanmin | a1645ce | 2010-04-19 13:32:50 +0800 | [diff] [blame] | 2153 | |
Arnaldo Carvalho de Melo | 23346f2 | 2010-04-27 21:17:50 -0300 | [diff] [blame] | 2154 | if (machine__is_default_guest(machine)) { |
Zhang, Yanmin | a1645ce | 2010-04-19 13:32:50 +0800 | [diff] [blame] | 2155 | /* |
| 2156 | * if the user specified a vmlinux filename, use it and only |
| 2157 | * it, reporting errors to the user if it cannot be used. |
| 2158 | * Or use file guest_kallsyms inputted by user on commandline |
| 2159 | */ |
| 2160 | if (symbol_conf.default_guest_vmlinux_name != NULL) { |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 2161 | err = dso__load_vmlinux(dso, map, |
Zhang, Yanmin | a1645ce | 2010-04-19 13:32:50 +0800 | [diff] [blame] | 2162 | symbol_conf.default_guest_vmlinux_name, filter); |
| 2163 | goto out_try_fixup; |
| 2164 | } |
| 2165 | |
| 2166 | kallsyms_filename = symbol_conf.default_guest_kallsyms; |
| 2167 | if (!kallsyms_filename) |
| 2168 | return -1; |
| 2169 | } else { |
Arnaldo Carvalho de Melo | 23346f2 | 2010-04-27 21:17:50 -0300 | [diff] [blame] | 2170 | sprintf(path, "%s/proc/kallsyms", machine->root_dir); |
Zhang, Yanmin | a1645ce | 2010-04-19 13:32:50 +0800 | [diff] [blame] | 2171 | kallsyms_filename = path; |
| 2172 | } |
| 2173 | |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 2174 | err = dso__load_kallsyms(dso, kallsyms_filename, map, filter); |
Zhang, Yanmin | a1645ce | 2010-04-19 13:32:50 +0800 | [diff] [blame] | 2175 | if (err > 0) |
| 2176 | pr_debug("Using %s for symbols\n", kallsyms_filename); |
| 2177 | |
| 2178 | out_try_fixup: |
| 2179 | if (err > 0) { |
| 2180 | if (kallsyms_filename != NULL) { |
Arnaldo Carvalho de Melo | 48ea8f5 | 2010-04-27 21:19:05 -0300 | [diff] [blame] | 2181 | machine__mmap_name(machine, path, sizeof(path)); |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 2182 | dso__set_long_name(dso, strdup(path)); |
Zhang, Yanmin | a1645ce | 2010-04-19 13:32:50 +0800 | [diff] [blame] | 2183 | } |
| 2184 | map__fixup_start(map); |
| 2185 | map__fixup_end(map); |
| 2186 | } |
| 2187 | |
| 2188 | return err; |
| 2189 | } |
Frederic Weisbecker | cd84c2a | 2009-08-12 10:03:49 +0200 | [diff] [blame] | 2190 | |
Arnaldo Carvalho de Melo | b0da954 | 2009-11-27 16:29:14 -0200 | [diff] [blame] | 2191 | static void dsos__add(struct list_head *head, struct dso *dso) |
Frederic Weisbecker | cd84c2a | 2009-08-12 10:03:49 +0200 | [diff] [blame] | 2192 | { |
Arnaldo Carvalho de Melo | b0da954 | 2009-11-27 16:29:14 -0200 | [diff] [blame] | 2193 | list_add_tail(&dso->node, head); |
Frederic Weisbecker | cd84c2a | 2009-08-12 10:03:49 +0200 | [diff] [blame] | 2194 | } |
| 2195 | |
Arnaldo Carvalho de Melo | b0da954 | 2009-11-27 16:29:14 -0200 | [diff] [blame] | 2196 | static struct dso *dsos__find(struct list_head *head, const char *name) |
Frederic Weisbecker | cd84c2a | 2009-08-12 10:03:49 +0200 | [diff] [blame] | 2197 | { |
| 2198 | struct dso *pos; |
| 2199 | |
Arnaldo Carvalho de Melo | b0da954 | 2009-11-27 16:29:14 -0200 | [diff] [blame] | 2200 | list_for_each_entry(pos, head, node) |
Arnaldo Carvalho de Melo | cf4e5b0 | 2010-01-14 23:45:27 -0200 | [diff] [blame] | 2201 | if (strcmp(pos->long_name, name) == 0) |
Frederic Weisbecker | cd84c2a | 2009-08-12 10:03:49 +0200 | [diff] [blame] | 2202 | return pos; |
| 2203 | return NULL; |
| 2204 | } |
| 2205 | |
Arnaldo Carvalho de Melo | a89e5abe | 2010-01-07 19:59:39 -0200 | [diff] [blame] | 2206 | struct dso *__dsos__findnew(struct list_head *head, const char *name) |
Frederic Weisbecker | cd84c2a | 2009-08-12 10:03:49 +0200 | [diff] [blame] | 2207 | { |
Arnaldo Carvalho de Melo | a89e5abe | 2010-01-07 19:59:39 -0200 | [diff] [blame] | 2208 | struct dso *dso = dsos__find(head, name); |
Frederic Weisbecker | cd84c2a | 2009-08-12 10:03:49 +0200 | [diff] [blame] | 2209 | |
Arnaldo Carvalho de Melo | e420499 | 2009-10-20 14:25:40 -0200 | [diff] [blame] | 2210 | if (!dso) { |
Arnaldo Carvalho de Melo | 00a192b | 2009-10-30 16:28:24 -0200 | [diff] [blame] | 2211 | dso = dso__new(name); |
Arnaldo Carvalho de Melo | cfc10d3 | 2009-11-17 15:40:53 -0200 | [diff] [blame] | 2212 | if (dso != NULL) { |
Arnaldo Carvalho de Melo | a89e5abe | 2010-01-07 19:59:39 -0200 | [diff] [blame] | 2213 | dsos__add(head, dso); |
Arnaldo Carvalho de Melo | cfc10d3 | 2009-11-17 15:40:53 -0200 | [diff] [blame] | 2214 | dso__set_basename(dso); |
| 2215 | } |
Arnaldo Carvalho de Melo | 66bd842 | 2009-10-28 21:51:21 -0200 | [diff] [blame] | 2216 | } |
Frederic Weisbecker | cd84c2a | 2009-08-12 10:03:49 +0200 | [diff] [blame] | 2217 | |
| 2218 | return dso; |
Frederic Weisbecker | cd84c2a | 2009-08-12 10:03:49 +0200 | [diff] [blame] | 2219 | } |
| 2220 | |
Arnaldo Carvalho de Melo | 1f626bc | 2010-05-09 19:57:08 -0300 | [diff] [blame] | 2221 | size_t __dsos__fprintf(struct list_head *head, FILE *fp) |
Frederic Weisbecker | cd84c2a | 2009-08-12 10:03:49 +0200 | [diff] [blame] | 2222 | { |
| 2223 | struct dso *pos; |
Arnaldo Carvalho de Melo | cbf6968 | 2010-04-27 21:22:44 -0300 | [diff] [blame] | 2224 | size_t ret = 0; |
Frederic Weisbecker | cd84c2a | 2009-08-12 10:03:49 +0200 | [diff] [blame] | 2225 | |
Arnaldo Carvalho de Melo | 95011c6 | 2009-11-27 16:29:20 -0200 | [diff] [blame] | 2226 | list_for_each_entry(pos, head, node) { |
| 2227 | int i; |
| 2228 | for (i = 0; i < MAP__NR_TYPES; ++i) |
Arnaldo Carvalho de Melo | cbf6968 | 2010-04-27 21:22:44 -0300 | [diff] [blame] | 2229 | ret += dso__fprintf(pos, i, fp); |
Arnaldo Carvalho de Melo | 95011c6 | 2009-11-27 16:29:20 -0200 | [diff] [blame] | 2230 | } |
Arnaldo Carvalho de Melo | cbf6968 | 2010-04-27 21:22:44 -0300 | [diff] [blame] | 2231 | |
| 2232 | return ret; |
Frederic Weisbecker | cd84c2a | 2009-08-12 10:03:49 +0200 | [diff] [blame] | 2233 | } |
| 2234 | |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 2235 | size_t machines__fprintf_dsos(struct rb_root *machines, FILE *fp) |
Arnaldo Carvalho de Melo | b0da954 | 2009-11-27 16:29:14 -0200 | [diff] [blame] | 2236 | { |
Zhang, Yanmin | a1645ce | 2010-04-19 13:32:50 +0800 | [diff] [blame] | 2237 | struct rb_node *nd; |
Arnaldo Carvalho de Melo | cbf6968 | 2010-04-27 21:22:44 -0300 | [diff] [blame] | 2238 | size_t ret = 0; |
Zhang, Yanmin | a1645ce | 2010-04-19 13:32:50 +0800 | [diff] [blame] | 2239 | |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 2240 | for (nd = rb_first(machines); nd; nd = rb_next(nd)) { |
Arnaldo Carvalho de Melo | 23346f2 | 2010-04-27 21:17:50 -0300 | [diff] [blame] | 2241 | struct machine *pos = rb_entry(nd, struct machine, rb_node); |
Arnaldo Carvalho de Melo | cbf6968 | 2010-04-27 21:22:44 -0300 | [diff] [blame] | 2242 | ret += __dsos__fprintf(&pos->kernel_dsos, fp); |
| 2243 | ret += __dsos__fprintf(&pos->user_dsos, fp); |
Zhang, Yanmin | a1645ce | 2010-04-19 13:32:50 +0800 | [diff] [blame] | 2244 | } |
Arnaldo Carvalho de Melo | cbf6968 | 2010-04-27 21:22:44 -0300 | [diff] [blame] | 2245 | |
| 2246 | return ret; |
Arnaldo Carvalho de Melo | b0da954 | 2009-11-27 16:29:14 -0200 | [diff] [blame] | 2247 | } |
| 2248 | |
Arnaldo Carvalho de Melo | 88d3d9b7 | 2010-01-14 23:45:30 -0200 | [diff] [blame] | 2249 | static size_t __dsos__fprintf_buildid(struct list_head *head, FILE *fp, |
| 2250 | bool with_hits) |
Arnaldo Carvalho de Melo | 9e03eb2 | 2009-11-16 16:32:44 -0200 | [diff] [blame] | 2251 | { |
| 2252 | struct dso *pos; |
| 2253 | size_t ret = 0; |
| 2254 | |
Arnaldo Carvalho de Melo | b0da954 | 2009-11-27 16:29:14 -0200 | [diff] [blame] | 2255 | list_for_each_entry(pos, head, node) { |
Arnaldo Carvalho de Melo | 88d3d9b7 | 2010-01-14 23:45:30 -0200 | [diff] [blame] | 2256 | if (with_hits && !pos->hit) |
| 2257 | continue; |
Arnaldo Carvalho de Melo | 9e03eb2 | 2009-11-16 16:32:44 -0200 | [diff] [blame] | 2258 | ret += dso__fprintf_buildid(pos, fp); |
Arnaldo Carvalho de Melo | 1124ba7 | 2009-11-16 21:45:25 -0200 | [diff] [blame] | 2259 | ret += fprintf(fp, " %s\n", pos->long_name); |
Arnaldo Carvalho de Melo | 9e03eb2 | 2009-11-16 16:32:44 -0200 | [diff] [blame] | 2260 | } |
| 2261 | return ret; |
| 2262 | } |
| 2263 | |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 2264 | size_t machine__fprintf_dsos_buildid(struct machine *machine, FILE *fp, |
| 2265 | bool with_hits) |
Arnaldo Carvalho de Melo | f869097 | 2010-05-19 13:41:23 -0300 | [diff] [blame] | 2266 | { |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 2267 | return __dsos__fprintf_buildid(&machine->kernel_dsos, fp, with_hits) + |
| 2268 | __dsos__fprintf_buildid(&machine->user_dsos, fp, with_hits); |
Arnaldo Carvalho de Melo | f869097 | 2010-05-19 13:41:23 -0300 | [diff] [blame] | 2269 | } |
| 2270 | |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 2271 | size_t machines__fprintf_dsos_buildid(struct rb_root *machines, |
| 2272 | FILE *fp, bool with_hits) |
Arnaldo Carvalho de Melo | b0da954 | 2009-11-27 16:29:14 -0200 | [diff] [blame] | 2273 | { |
Zhang, Yanmin | a1645ce | 2010-04-19 13:32:50 +0800 | [diff] [blame] | 2274 | struct rb_node *nd; |
| 2275 | size_t ret = 0; |
| 2276 | |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 2277 | for (nd = rb_first(machines); nd; nd = rb_next(nd)) { |
Arnaldo Carvalho de Melo | 23346f2 | 2010-04-27 21:17:50 -0300 | [diff] [blame] | 2278 | struct machine *pos = rb_entry(nd, struct machine, rb_node); |
Arnaldo Carvalho de Melo | f869097 | 2010-05-19 13:41:23 -0300 | [diff] [blame] | 2279 | ret += machine__fprintf_dsos_buildid(pos, fp, with_hits); |
Zhang, Yanmin | a1645ce | 2010-04-19 13:32:50 +0800 | [diff] [blame] | 2280 | } |
| 2281 | return ret; |
Arnaldo Carvalho de Melo | b0da954 | 2009-11-27 16:29:14 -0200 | [diff] [blame] | 2282 | } |
| 2283 | |
Jiri Olsa | f57b05e | 2011-06-01 21:43:46 +0200 | [diff] [blame] | 2284 | static struct dso* |
| 2285 | dso__kernel_findnew(struct machine *machine, const char *name, |
| 2286 | const char *short_name, int dso_type) |
Arnaldo Carvalho de Melo | fd1d908 | 2010-01-27 21:05:51 -0200 | [diff] [blame] | 2287 | { |
Jiri Olsa | f57b05e | 2011-06-01 21:43:46 +0200 | [diff] [blame] | 2288 | /* |
| 2289 | * The kernel dso could be created by build_id processing. |
| 2290 | */ |
| 2291 | struct dso *dso = __dsos__findnew(&machine->kernel_dsos, name); |
Arnaldo Carvalho de Melo | fd1d908 | 2010-01-27 21:05:51 -0200 | [diff] [blame] | 2292 | |
Jiri Olsa | f57b05e | 2011-06-01 21:43:46 +0200 | [diff] [blame] | 2293 | /* |
| 2294 | * We need to run this in all cases, since during the build_id |
| 2295 | * processing we had no idea this was the kernel dso. |
| 2296 | */ |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 2297 | if (dso != NULL) { |
Jiri Olsa | f57b05e | 2011-06-01 21:43:46 +0200 | [diff] [blame] | 2298 | dso__set_short_name(dso, short_name); |
| 2299 | dso->kernel = dso_type; |
Zhang, Yanmin | a1645ce | 2010-04-19 13:32:50 +0800 | [diff] [blame] | 2300 | } |
| 2301 | |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 2302 | return dso; |
Zhang, Yanmin | a1645ce | 2010-04-19 13:32:50 +0800 | [diff] [blame] | 2303 | } |
| 2304 | |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 2305 | void dso__read_running_kernel_build_id(struct dso *dso, struct machine *machine) |
Zhang, Yanmin | a1645ce | 2010-04-19 13:32:50 +0800 | [diff] [blame] | 2306 | { |
| 2307 | char path[PATH_MAX]; |
| 2308 | |
Arnaldo Carvalho de Melo | 23346f2 | 2010-04-27 21:17:50 -0300 | [diff] [blame] | 2309 | if (machine__is_default_guest(machine)) |
Zhang, Yanmin | a1645ce | 2010-04-19 13:32:50 +0800 | [diff] [blame] | 2310 | return; |
Arnaldo Carvalho de Melo | 23346f2 | 2010-04-27 21:17:50 -0300 | [diff] [blame] | 2311 | sprintf(path, "%s/sys/kernel/notes", machine->root_dir); |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 2312 | if (sysfs__read_build_id(path, dso->build_id, |
| 2313 | sizeof(dso->build_id)) == 0) |
| 2314 | dso->has_build_id = true; |
Arnaldo Carvalho de Melo | fd1d908 | 2010-01-27 21:05:51 -0200 | [diff] [blame] | 2315 | } |
| 2316 | |
Jiri Olsa | f57b05e | 2011-06-01 21:43:46 +0200 | [diff] [blame] | 2317 | static struct dso *machine__get_kernel(struct machine *machine) |
Frederic Weisbecker | cd84c2a | 2009-08-12 10:03:49 +0200 | [diff] [blame] | 2318 | { |
Zhang, Yanmin | a1645ce | 2010-04-19 13:32:50 +0800 | [diff] [blame] | 2319 | const char *vmlinux_name = NULL; |
| 2320 | struct dso *kernel; |
Frederic Weisbecker | cd84c2a | 2009-08-12 10:03:49 +0200 | [diff] [blame] | 2321 | |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 2322 | if (machine__is_host(machine)) { |
Zhang, Yanmin | a1645ce | 2010-04-19 13:32:50 +0800 | [diff] [blame] | 2323 | vmlinux_name = symbol_conf.vmlinux_name; |
Jiri Olsa | f57b05e | 2011-06-01 21:43:46 +0200 | [diff] [blame] | 2324 | if (!vmlinux_name) |
| 2325 | vmlinux_name = "[kernel.kallsyms]"; |
| 2326 | |
| 2327 | kernel = dso__kernel_findnew(machine, vmlinux_name, |
| 2328 | "[kernel]", |
| 2329 | DSO_TYPE_KERNEL); |
Zhang, Yanmin | a1645ce | 2010-04-19 13:32:50 +0800 | [diff] [blame] | 2330 | } else { |
Jiri Olsa | f57b05e | 2011-06-01 21:43:46 +0200 | [diff] [blame] | 2331 | char bf[PATH_MAX]; |
| 2332 | |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 2333 | if (machine__is_default_guest(machine)) |
Zhang, Yanmin | a1645ce | 2010-04-19 13:32:50 +0800 | [diff] [blame] | 2334 | vmlinux_name = symbol_conf.default_guest_vmlinux_name; |
Jiri Olsa | f57b05e | 2011-06-01 21:43:46 +0200 | [diff] [blame] | 2335 | if (!vmlinux_name) |
| 2336 | vmlinux_name = machine__mmap_name(machine, bf, |
| 2337 | sizeof(bf)); |
| 2338 | |
| 2339 | kernel = dso__kernel_findnew(machine, vmlinux_name, |
| 2340 | "[guest.kernel]", |
| 2341 | DSO_TYPE_GUEST_KERNEL); |
Arnaldo Carvalho de Melo | 8d92c02 | 2010-02-03 16:52:02 -0200 | [diff] [blame] | 2342 | } |
Frederic Weisbecker | cd84c2a | 2009-08-12 10:03:49 +0200 | [diff] [blame] | 2343 | |
Jiri Olsa | f57b05e | 2011-06-01 21:43:46 +0200 | [diff] [blame] | 2344 | if (kernel != NULL && (!kernel->has_build_id)) |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 2345 | dso__read_running_kernel_build_id(kernel, machine); |
Jiri Olsa | f57b05e | 2011-06-01 21:43:46 +0200 | [diff] [blame] | 2346 | |
Arnaldo Carvalho de Melo | f1dfa0b | 2009-12-11 14:50:39 -0200 | [diff] [blame] | 2347 | return kernel; |
Arnaldo Carvalho de Melo | f1dfa0b | 2009-12-11 14:50:39 -0200 | [diff] [blame] | 2348 | } |
| 2349 | |
Ming Lei | d214afb | 2010-11-25 19:27:25 +0800 | [diff] [blame] | 2350 | struct process_args { |
| 2351 | u64 start; |
| 2352 | }; |
| 2353 | |
| 2354 | static int symbol__in_kernel(void *arg, const char *name, |
Arnaldo Carvalho de Melo | 3b01a41 | 2010-12-22 01:08:36 -0200 | [diff] [blame] | 2355 | char type __used, u64 start, u64 end __used) |
Ming Lei | d214afb | 2010-11-25 19:27:25 +0800 | [diff] [blame] | 2356 | { |
| 2357 | struct process_args *args = arg; |
| 2358 | |
| 2359 | if (strchr(name, '[')) |
| 2360 | return 0; |
| 2361 | |
| 2362 | args->start = start; |
| 2363 | return 1; |
| 2364 | } |
| 2365 | |
| 2366 | /* Figure out the start address of kernel map from /proc/kallsyms */ |
| 2367 | static u64 machine__get_kernel_start_addr(struct machine *machine) |
| 2368 | { |
| 2369 | const char *filename; |
| 2370 | char path[PATH_MAX]; |
| 2371 | struct process_args args; |
| 2372 | |
| 2373 | if (machine__is_host(machine)) { |
| 2374 | filename = "/proc/kallsyms"; |
| 2375 | } else { |
| 2376 | if (machine__is_default_guest(machine)) |
| 2377 | filename = (char *)symbol_conf.default_guest_kallsyms; |
| 2378 | else { |
| 2379 | sprintf(path, "%s/proc/kallsyms", machine->root_dir); |
| 2380 | filename = path; |
| 2381 | } |
| 2382 | } |
| 2383 | |
Arnaldo Carvalho de Melo | ec80fde | 2011-05-26 09:53:51 -0300 | [diff] [blame] | 2384 | if (symbol__restricted_filename(filename, "/proc/kallsyms")) |
| 2385 | return 0; |
| 2386 | |
Ming Lei | d214afb | 2010-11-25 19:27:25 +0800 | [diff] [blame] | 2387 | if (kallsyms__parse(filename, &args, symbol__in_kernel) <= 0) |
| 2388 | return 0; |
| 2389 | |
| 2390 | return args.start; |
| 2391 | } |
| 2392 | |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 2393 | int __machine__create_kernel_maps(struct machine *machine, struct dso *kernel) |
Arnaldo Carvalho de Melo | f1dfa0b | 2009-12-11 14:50:39 -0200 | [diff] [blame] | 2394 | { |
Arnaldo Carvalho de Melo | de17648 | 2010-01-04 16:19:29 -0200 | [diff] [blame] | 2395 | enum map_type type; |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 2396 | u64 start = machine__get_kernel_start_addr(machine); |
Arnaldo Carvalho de Melo | f1dfa0b | 2009-12-11 14:50:39 -0200 | [diff] [blame] | 2397 | |
Arnaldo Carvalho de Melo | de17648 | 2010-01-04 16:19:29 -0200 | [diff] [blame] | 2398 | for (type = 0; type < MAP__NR_TYPES; ++type) { |
Arnaldo Carvalho de Melo | 9de89fe | 2010-02-03 16:52:00 -0200 | [diff] [blame] | 2399 | struct kmap *kmap; |
| 2400 | |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 2401 | machine->vmlinux_maps[type] = map__new2(start, kernel, type); |
| 2402 | if (machine->vmlinux_maps[type] == NULL) |
Arnaldo Carvalho de Melo | de17648 | 2010-01-04 16:19:29 -0200 | [diff] [blame] | 2403 | return -1; |
Arnaldo Carvalho de Melo | f1dfa0b | 2009-12-11 14:50:39 -0200 | [diff] [blame] | 2404 | |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 2405 | machine->vmlinux_maps[type]->map_ip = |
| 2406 | machine->vmlinux_maps[type]->unmap_ip = |
| 2407 | identity__map_ip; |
| 2408 | kmap = map__kmap(machine->vmlinux_maps[type]); |
| 2409 | kmap->kmaps = &machine->kmaps; |
| 2410 | map_groups__insert(&machine->kmaps, |
| 2411 | machine->vmlinux_maps[type]); |
Arnaldo Carvalho de Melo | f1dfa0b | 2009-12-11 14:50:39 -0200 | [diff] [blame] | 2412 | } |
| 2413 | |
Arnaldo Carvalho de Melo | f1dfa0b | 2009-12-11 14:50:39 -0200 | [diff] [blame] | 2414 | return 0; |
Arnaldo Carvalho de Melo | 2446042 | 2009-11-18 20:20:53 -0200 | [diff] [blame] | 2415 | } |
| 2416 | |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 2417 | void machine__destroy_kernel_maps(struct machine *machine) |
Arnaldo Carvalho de Melo | 076c6e45 | 2010-08-02 18:18:28 -0300 | [diff] [blame] | 2418 | { |
| 2419 | enum map_type type; |
| 2420 | |
| 2421 | for (type = 0; type < MAP__NR_TYPES; ++type) { |
| 2422 | struct kmap *kmap; |
| 2423 | |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 2424 | if (machine->vmlinux_maps[type] == NULL) |
Arnaldo Carvalho de Melo | 076c6e45 | 2010-08-02 18:18:28 -0300 | [diff] [blame] | 2425 | continue; |
| 2426 | |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 2427 | kmap = map__kmap(machine->vmlinux_maps[type]); |
| 2428 | map_groups__remove(&machine->kmaps, |
| 2429 | machine->vmlinux_maps[type]); |
Arnaldo Carvalho de Melo | 076c6e45 | 2010-08-02 18:18:28 -0300 | [diff] [blame] | 2430 | if (kmap->ref_reloc_sym) { |
| 2431 | /* |
| 2432 | * ref_reloc_sym is shared among all maps, so free just |
| 2433 | * on one of them. |
| 2434 | */ |
| 2435 | if (type == MAP__FUNCTION) { |
| 2436 | free((char *)kmap->ref_reloc_sym->name); |
| 2437 | kmap->ref_reloc_sym->name = NULL; |
| 2438 | free(kmap->ref_reloc_sym); |
| 2439 | } |
| 2440 | kmap->ref_reloc_sym = NULL; |
| 2441 | } |
| 2442 | |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 2443 | map__delete(machine->vmlinux_maps[type]); |
| 2444 | machine->vmlinux_maps[type] = NULL; |
Arnaldo Carvalho de Melo | 076c6e45 | 2010-08-02 18:18:28 -0300 | [diff] [blame] | 2445 | } |
| 2446 | } |
| 2447 | |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 2448 | int machine__create_kernel_maps(struct machine *machine) |
Arnaldo Carvalho de Melo | 5c0541d | 2010-04-29 15:25:23 -0300 | [diff] [blame] | 2449 | { |
Jiri Olsa | f57b05e | 2011-06-01 21:43:46 +0200 | [diff] [blame] | 2450 | struct dso *kernel = machine__get_kernel(machine); |
Arnaldo Carvalho de Melo | 5c0541d | 2010-04-29 15:25:23 -0300 | [diff] [blame] | 2451 | |
| 2452 | if (kernel == NULL || |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 2453 | __machine__create_kernel_maps(machine, kernel) < 0) |
Arnaldo Carvalho de Melo | 5c0541d | 2010-04-29 15:25:23 -0300 | [diff] [blame] | 2454 | return -1; |
| 2455 | |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 2456 | if (symbol_conf.use_modules && machine__create_modules(machine) < 0) |
Arnaldo Carvalho de Melo | 5c0541d | 2010-04-29 15:25:23 -0300 | [diff] [blame] | 2457 | pr_debug("Problems creating module maps, continuing anyway...\n"); |
| 2458 | /* |
| 2459 | * Now that we have all the maps created, just set the ->end of them: |
| 2460 | */ |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 2461 | map_groups__fixup_end(&machine->kmaps); |
Arnaldo Carvalho de Melo | 5c0541d | 2010-04-29 15:25:23 -0300 | [diff] [blame] | 2462 | return 0; |
| 2463 | } |
| 2464 | |
Arnaldo Carvalho de Melo | cc612d8 | 2009-11-23 16:39:10 -0200 | [diff] [blame] | 2465 | static void vmlinux_path__exit(void) |
Arnaldo Carvalho de Melo | 2446042 | 2009-11-18 20:20:53 -0200 | [diff] [blame] | 2466 | { |
Arnaldo Carvalho de Melo | cc612d8 | 2009-11-23 16:39:10 -0200 | [diff] [blame] | 2467 | while (--vmlinux_path__nr_entries >= 0) { |
| 2468 | free(vmlinux_path[vmlinux_path__nr_entries]); |
| 2469 | vmlinux_path[vmlinux_path__nr_entries] = NULL; |
| 2470 | } |
| 2471 | |
| 2472 | free(vmlinux_path); |
| 2473 | vmlinux_path = NULL; |
| 2474 | } |
| 2475 | |
| 2476 | static int vmlinux_path__init(void) |
| 2477 | { |
| 2478 | struct utsname uts; |
| 2479 | char bf[PATH_MAX]; |
| 2480 | |
Arnaldo Carvalho de Melo | cc612d8 | 2009-11-23 16:39:10 -0200 | [diff] [blame] | 2481 | vmlinux_path = malloc(sizeof(char *) * 5); |
| 2482 | if (vmlinux_path == NULL) |
| 2483 | return -1; |
| 2484 | |
| 2485 | vmlinux_path[vmlinux_path__nr_entries] = strdup("vmlinux"); |
| 2486 | if (vmlinux_path[vmlinux_path__nr_entries] == NULL) |
| 2487 | goto out_fail; |
| 2488 | ++vmlinux_path__nr_entries; |
| 2489 | vmlinux_path[vmlinux_path__nr_entries] = strdup("/boot/vmlinux"); |
| 2490 | if (vmlinux_path[vmlinux_path__nr_entries] == NULL) |
| 2491 | goto out_fail; |
| 2492 | ++vmlinux_path__nr_entries; |
David Ahern | ec5761e | 2010-12-09 13:27:07 -0700 | [diff] [blame] | 2493 | |
| 2494 | /* only try running kernel version if no symfs was given */ |
| 2495 | if (symbol_conf.symfs[0] != 0) |
| 2496 | return 0; |
| 2497 | |
| 2498 | if (uname(&uts) < 0) |
| 2499 | return -1; |
| 2500 | |
Arnaldo Carvalho de Melo | cc612d8 | 2009-11-23 16:39:10 -0200 | [diff] [blame] | 2501 | snprintf(bf, sizeof(bf), "/boot/vmlinux-%s", uts.release); |
| 2502 | vmlinux_path[vmlinux_path__nr_entries] = strdup(bf); |
| 2503 | if (vmlinux_path[vmlinux_path__nr_entries] == NULL) |
| 2504 | goto out_fail; |
| 2505 | ++vmlinux_path__nr_entries; |
| 2506 | snprintf(bf, sizeof(bf), "/lib/modules/%s/build/vmlinux", uts.release); |
| 2507 | vmlinux_path[vmlinux_path__nr_entries] = strdup(bf); |
| 2508 | if (vmlinux_path[vmlinux_path__nr_entries] == NULL) |
| 2509 | goto out_fail; |
| 2510 | ++vmlinux_path__nr_entries; |
| 2511 | snprintf(bf, sizeof(bf), "/usr/lib/debug/lib/modules/%s/vmlinux", |
| 2512 | uts.release); |
| 2513 | vmlinux_path[vmlinux_path__nr_entries] = strdup(bf); |
| 2514 | if (vmlinux_path[vmlinux_path__nr_entries] == NULL) |
| 2515 | goto out_fail; |
| 2516 | ++vmlinux_path__nr_entries; |
| 2517 | |
| 2518 | return 0; |
| 2519 | |
| 2520 | out_fail: |
| 2521 | vmlinux_path__exit(); |
| 2522 | return -1; |
| 2523 | } |
| 2524 | |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 2525 | size_t machine__fprintf_vmlinux_path(struct machine *machine, FILE *fp) |
Arnaldo Carvalho de Melo | b0a9ab6 | 2010-03-15 11:46:58 -0300 | [diff] [blame] | 2526 | { |
| 2527 | int i; |
| 2528 | size_t printed = 0; |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 2529 | struct dso *kdso = machine->vmlinux_maps[MAP__FUNCTION]->dso; |
Arnaldo Carvalho de Melo | 5ad90e4 | 2010-05-26 13:26:02 -0300 | [diff] [blame] | 2530 | |
| 2531 | if (kdso->has_build_id) { |
| 2532 | char filename[PATH_MAX]; |
| 2533 | if (dso__build_id_filename(kdso, filename, sizeof(filename))) |
| 2534 | printed += fprintf(fp, "[0] %s\n", filename); |
| 2535 | } |
Arnaldo Carvalho de Melo | b0a9ab6 | 2010-03-15 11:46:58 -0300 | [diff] [blame] | 2536 | |
| 2537 | for (i = 0; i < vmlinux_path__nr_entries; ++i) |
Arnaldo Carvalho de Melo | 5ad90e4 | 2010-05-26 13:26:02 -0300 | [diff] [blame] | 2538 | printed += fprintf(fp, "[%d] %s\n", |
| 2539 | i + kdso->has_build_id, vmlinux_path[i]); |
Arnaldo Carvalho de Melo | b0a9ab6 | 2010-03-15 11:46:58 -0300 | [diff] [blame] | 2540 | |
| 2541 | return printed; |
| 2542 | } |
| 2543 | |
Arnaldo Carvalho de Melo | 655000e | 2009-12-15 20:04:40 -0200 | [diff] [blame] | 2544 | static int setup_list(struct strlist **list, const char *list_str, |
| 2545 | const char *list_name) |
| 2546 | { |
| 2547 | if (list_str == NULL) |
| 2548 | return 0; |
| 2549 | |
| 2550 | *list = strlist__new(true, list_str); |
| 2551 | if (!*list) { |
| 2552 | pr_err("problems parsing %s list\n", list_name); |
| 2553 | return -1; |
| 2554 | } |
| 2555 | return 0; |
| 2556 | } |
| 2557 | |
Arnaldo Carvalho de Melo | ec80fde | 2011-05-26 09:53:51 -0300 | [diff] [blame] | 2558 | static bool symbol__read_kptr_restrict(void) |
| 2559 | { |
| 2560 | bool value = false; |
| 2561 | |
| 2562 | if (geteuid() != 0) { |
| 2563 | FILE *fp = fopen("/proc/sys/kernel/kptr_restrict", "r"); |
| 2564 | if (fp != NULL) { |
| 2565 | char line[8]; |
| 2566 | |
| 2567 | if (fgets(line, sizeof(line), fp) != NULL) |
| 2568 | value = atoi(line) != 0; |
| 2569 | |
| 2570 | fclose(fp); |
| 2571 | } |
| 2572 | } |
| 2573 | |
| 2574 | return value; |
| 2575 | } |
| 2576 | |
Arnaldo Carvalho de Melo | 75be6cf | 2009-12-15 20:04:39 -0200 | [diff] [blame] | 2577 | int symbol__init(void) |
Arnaldo Carvalho de Melo | cc612d8 | 2009-11-23 16:39:10 -0200 | [diff] [blame] | 2578 | { |
David Ahern | ec5761e | 2010-12-09 13:27:07 -0700 | [diff] [blame] | 2579 | const char *symfs; |
| 2580 | |
Jovi Zhang | 85e00b5 | 2010-09-09 13:30:59 -0300 | [diff] [blame] | 2581 | if (symbol_conf.initialized) |
| 2582 | return 0; |
| 2583 | |
David S. Miller | 4d43951 | 2011-03-29 14:18:39 -0300 | [diff] [blame] | 2584 | symbol_conf.priv_size = ALIGN(symbol_conf.priv_size, sizeof(u64)); |
| 2585 | |
Arnaldo Carvalho de Melo | 95011c6 | 2009-11-27 16:29:20 -0200 | [diff] [blame] | 2586 | elf_version(EV_CURRENT); |
Arnaldo Carvalho de Melo | 75be6cf | 2009-12-15 20:04:39 -0200 | [diff] [blame] | 2587 | if (symbol_conf.sort_by_name) |
| 2588 | symbol_conf.priv_size += (sizeof(struct symbol_name_rb_node) - |
| 2589 | sizeof(struct symbol)); |
Arnaldo Carvalho de Melo | b32d133 | 2009-11-24 12:05:15 -0200 | [diff] [blame] | 2590 | |
Arnaldo Carvalho de Melo | 75be6cf | 2009-12-15 20:04:39 -0200 | [diff] [blame] | 2591 | if (symbol_conf.try_vmlinux_path && vmlinux_path__init() < 0) |
Arnaldo Carvalho de Melo | cc612d8 | 2009-11-23 16:39:10 -0200 | [diff] [blame] | 2592 | return -1; |
| 2593 | |
Arnaldo Carvalho de Melo | c410a33 | 2009-12-15 20:04:41 -0200 | [diff] [blame] | 2594 | if (symbol_conf.field_sep && *symbol_conf.field_sep == '.') { |
| 2595 | pr_err("'.' is the only non valid --field-separator argument\n"); |
| 2596 | return -1; |
| 2597 | } |
| 2598 | |
Arnaldo Carvalho de Melo | 655000e | 2009-12-15 20:04:40 -0200 | [diff] [blame] | 2599 | if (setup_list(&symbol_conf.dso_list, |
| 2600 | symbol_conf.dso_list_str, "dso") < 0) |
| 2601 | return -1; |
| 2602 | |
| 2603 | if (setup_list(&symbol_conf.comm_list, |
| 2604 | symbol_conf.comm_list_str, "comm") < 0) |
| 2605 | goto out_free_dso_list; |
| 2606 | |
| 2607 | if (setup_list(&symbol_conf.sym_list, |
| 2608 | symbol_conf.sym_list_str, "symbol") < 0) |
| 2609 | goto out_free_comm_list; |
| 2610 | |
David Ahern | ec5761e | 2010-12-09 13:27:07 -0700 | [diff] [blame] | 2611 | /* |
| 2612 | * A path to symbols of "/" is identical to "" |
| 2613 | * reset here for simplicity. |
| 2614 | */ |
| 2615 | symfs = realpath(symbol_conf.symfs, NULL); |
| 2616 | if (symfs == NULL) |
| 2617 | symfs = symbol_conf.symfs; |
| 2618 | if (strcmp(symfs, "/") == 0) |
| 2619 | symbol_conf.symfs = ""; |
| 2620 | if (symfs != symbol_conf.symfs) |
| 2621 | free((void *)symfs); |
| 2622 | |
Arnaldo Carvalho de Melo | ec80fde | 2011-05-26 09:53:51 -0300 | [diff] [blame] | 2623 | symbol_conf.kptr_restrict = symbol__read_kptr_restrict(); |
| 2624 | |
Jovi Zhang | 85e00b5 | 2010-09-09 13:30:59 -0300 | [diff] [blame] | 2625 | symbol_conf.initialized = true; |
Arnaldo Carvalho de Melo | 4aa6563 | 2009-12-13 19:50:29 -0200 | [diff] [blame] | 2626 | return 0; |
Arnaldo Carvalho de Melo | 655000e | 2009-12-15 20:04:40 -0200 | [diff] [blame] | 2627 | |
Arnaldo Carvalho de Melo | 655000e | 2009-12-15 20:04:40 -0200 | [diff] [blame] | 2628 | out_free_comm_list: |
| 2629 | strlist__delete(symbol_conf.comm_list); |
Namhyung Kim | d74c896 | 2011-12-13 00:16:52 +0900 | [diff] [blame] | 2630 | out_free_dso_list: |
| 2631 | strlist__delete(symbol_conf.dso_list); |
Arnaldo Carvalho de Melo | 655000e | 2009-12-15 20:04:40 -0200 | [diff] [blame] | 2632 | return -1; |
Arnaldo Carvalho de Melo | 4aa6563 | 2009-12-13 19:50:29 -0200 | [diff] [blame] | 2633 | } |
Arnaldo Carvalho de Melo | cc612d8 | 2009-11-23 16:39:10 -0200 | [diff] [blame] | 2634 | |
Arnaldo Carvalho de Melo | d65a458 | 2010-07-30 18:31:28 -0300 | [diff] [blame] | 2635 | void symbol__exit(void) |
| 2636 | { |
Jovi Zhang | 85e00b5 | 2010-09-09 13:30:59 -0300 | [diff] [blame] | 2637 | if (!symbol_conf.initialized) |
| 2638 | return; |
Arnaldo Carvalho de Melo | d65a458 | 2010-07-30 18:31:28 -0300 | [diff] [blame] | 2639 | strlist__delete(symbol_conf.sym_list); |
| 2640 | strlist__delete(symbol_conf.dso_list); |
| 2641 | strlist__delete(symbol_conf.comm_list); |
| 2642 | vmlinux_path__exit(); |
| 2643 | symbol_conf.sym_list = symbol_conf.dso_list = symbol_conf.comm_list = NULL; |
Jovi Zhang | 85e00b5 | 2010-09-09 13:30:59 -0300 | [diff] [blame] | 2644 | symbol_conf.initialized = false; |
Arnaldo Carvalho de Melo | d65a458 | 2010-07-30 18:31:28 -0300 | [diff] [blame] | 2645 | } |
| 2646 | |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 2647 | int machines__create_kernel_maps(struct rb_root *machines, pid_t pid) |
Arnaldo Carvalho de Melo | 4aa6563 | 2009-12-13 19:50:29 -0200 | [diff] [blame] | 2648 | { |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 2649 | struct machine *machine = machines__findnew(machines, pid); |
Arnaldo Carvalho de Melo | 9de89fe | 2010-02-03 16:52:00 -0200 | [diff] [blame] | 2650 | |
Arnaldo Carvalho de Melo | 23346f2 | 2010-04-27 21:17:50 -0300 | [diff] [blame] | 2651 | if (machine == NULL) |
Zhang, Yanmin | a1645ce | 2010-04-19 13:32:50 +0800 | [diff] [blame] | 2652 | return -1; |
Arnaldo Carvalho de Melo | 4aa6563 | 2009-12-13 19:50:29 -0200 | [diff] [blame] | 2653 | |
Arnaldo Carvalho de Melo | 5c0541d | 2010-04-29 15:25:23 -0300 | [diff] [blame] | 2654 | return machine__create_kernel_maps(machine); |
Frederic Weisbecker | cd84c2a | 2009-08-12 10:03:49 +0200 | [diff] [blame] | 2655 | } |
Arnaldo Carvalho de Melo | 5aab621 | 2010-03-25 19:59:00 -0300 | [diff] [blame] | 2656 | |
| 2657 | static int hex(char ch) |
| 2658 | { |
| 2659 | if ((ch >= '0') && (ch <= '9')) |
| 2660 | return ch - '0'; |
| 2661 | if ((ch >= 'a') && (ch <= 'f')) |
| 2662 | return ch - 'a' + 10; |
| 2663 | if ((ch >= 'A') && (ch <= 'F')) |
| 2664 | return ch - 'A' + 10; |
| 2665 | return -1; |
| 2666 | } |
| 2667 | |
| 2668 | /* |
| 2669 | * While we find nice hex chars, build a long_val. |
| 2670 | * Return number of chars processed. |
| 2671 | */ |
| 2672 | int hex2u64(const char *ptr, u64 *long_val) |
| 2673 | { |
| 2674 | const char *p = ptr; |
| 2675 | *long_val = 0; |
| 2676 | |
| 2677 | while (*p) { |
| 2678 | const int hex_val = hex(*p); |
| 2679 | |
| 2680 | if (hex_val < 0) |
| 2681 | break; |
| 2682 | |
| 2683 | *long_val = (*long_val << 4) | hex_val; |
| 2684 | p++; |
| 2685 | } |
| 2686 | |
| 2687 | return p - ptr; |
| 2688 | } |
| 2689 | |
| 2690 | char *strxfrchar(char *s, char from, char to) |
| 2691 | { |
| 2692 | char *p = s; |
| 2693 | |
| 2694 | while ((p = strchr(p, from)) != NULL) |
| 2695 | *p++ = to; |
| 2696 | |
| 2697 | return s; |
| 2698 | } |
Zhang, Yanmin | a1645ce | 2010-04-19 13:32:50 +0800 | [diff] [blame] | 2699 | |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 2700 | int machines__create_guest_kernel_maps(struct rb_root *machines) |
Zhang, Yanmin | a1645ce | 2010-04-19 13:32:50 +0800 | [diff] [blame] | 2701 | { |
| 2702 | int ret = 0; |
| 2703 | struct dirent **namelist = NULL; |
| 2704 | int i, items = 0; |
| 2705 | char path[PATH_MAX]; |
| 2706 | pid_t pid; |
| 2707 | |
| 2708 | if (symbol_conf.default_guest_vmlinux_name || |
| 2709 | symbol_conf.default_guest_modules || |
| 2710 | symbol_conf.default_guest_kallsyms) { |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 2711 | machines__create_kernel_maps(machines, DEFAULT_GUEST_KERNEL_ID); |
Zhang, Yanmin | a1645ce | 2010-04-19 13:32:50 +0800 | [diff] [blame] | 2712 | } |
| 2713 | |
| 2714 | if (symbol_conf.guestmount) { |
| 2715 | items = scandir(symbol_conf.guestmount, &namelist, NULL, NULL); |
| 2716 | if (items <= 0) |
| 2717 | return -ENOENT; |
| 2718 | for (i = 0; i < items; i++) { |
| 2719 | if (!isdigit(namelist[i]->d_name[0])) { |
| 2720 | /* Filter out . and .. */ |
| 2721 | continue; |
| 2722 | } |
| 2723 | pid = atoi(namelist[i]->d_name); |
| 2724 | sprintf(path, "%s/%s/proc/kallsyms", |
| 2725 | symbol_conf.guestmount, |
| 2726 | namelist[i]->d_name); |
| 2727 | ret = access(path, R_OK); |
| 2728 | if (ret) { |
| 2729 | pr_debug("Can't access file %s\n", path); |
| 2730 | goto failure; |
| 2731 | } |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 2732 | machines__create_kernel_maps(machines, pid); |
Zhang, Yanmin | a1645ce | 2010-04-19 13:32:50 +0800 | [diff] [blame] | 2733 | } |
| 2734 | failure: |
| 2735 | free(namelist); |
| 2736 | } |
| 2737 | |
| 2738 | return ret; |
| 2739 | } |
Arnaldo Carvalho de Melo | 5c0541d | 2010-04-29 15:25:23 -0300 | [diff] [blame] | 2740 | |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 2741 | void machines__destroy_guest_kernel_maps(struct rb_root *machines) |
Arnaldo Carvalho de Melo | 076c6e45 | 2010-08-02 18:18:28 -0300 | [diff] [blame] | 2742 | { |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 2743 | struct rb_node *next = rb_first(machines); |
Arnaldo Carvalho de Melo | 076c6e45 | 2010-08-02 18:18:28 -0300 | [diff] [blame] | 2744 | |
| 2745 | while (next) { |
| 2746 | struct machine *pos = rb_entry(next, struct machine, rb_node); |
| 2747 | |
| 2748 | next = rb_next(&pos->rb_node); |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 2749 | rb_erase(&pos->rb_node, machines); |
Arnaldo Carvalho de Melo | 076c6e45 | 2010-08-02 18:18:28 -0300 | [diff] [blame] | 2750 | machine__delete(pos); |
| 2751 | } |
| 2752 | } |
| 2753 | |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 2754 | int machine__load_kallsyms(struct machine *machine, const char *filename, |
Arnaldo Carvalho de Melo | 5c0541d | 2010-04-29 15:25:23 -0300 | [diff] [blame] | 2755 | enum map_type type, symbol_filter_t filter) |
| 2756 | { |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 2757 | struct map *map = machine->vmlinux_maps[type]; |
Arnaldo Carvalho de Melo | 5c0541d | 2010-04-29 15:25:23 -0300 | [diff] [blame] | 2758 | int ret = dso__load_kallsyms(map->dso, filename, map, filter); |
| 2759 | |
| 2760 | if (ret > 0) { |
| 2761 | dso__set_loaded(map->dso, type); |
| 2762 | /* |
| 2763 | * Since /proc/kallsyms will have multiple sessions for the |
| 2764 | * kernel, with modules between them, fixup the end of all |
| 2765 | * sections. |
| 2766 | */ |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 2767 | __map_groups__fixup_end(&machine->kmaps, type); |
Arnaldo Carvalho de Melo | 5c0541d | 2010-04-29 15:25:23 -0300 | [diff] [blame] | 2768 | } |
| 2769 | |
| 2770 | return ret; |
| 2771 | } |
| 2772 | |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 2773 | int machine__load_vmlinux_path(struct machine *machine, enum map_type type, |
Arnaldo Carvalho de Melo | 5c0541d | 2010-04-29 15:25:23 -0300 | [diff] [blame] | 2774 | symbol_filter_t filter) |
| 2775 | { |
Arnaldo Carvalho de Melo | aeafcba | 2011-03-31 10:56:28 -0300 | [diff] [blame] | 2776 | struct map *map = machine->vmlinux_maps[type]; |
Arnaldo Carvalho de Melo | 5c0541d | 2010-04-29 15:25:23 -0300 | [diff] [blame] | 2777 | int ret = dso__load_vmlinux_path(map->dso, map, filter); |
| 2778 | |
| 2779 | if (ret > 0) { |
| 2780 | dso__set_loaded(map->dso, type); |
| 2781 | map__reloc_vmlinux(map); |
| 2782 | } |
| 2783 | |
| 2784 | return ret; |
| 2785 | } |