Arnaldo Carvalho de Melo | 5aab621 | 2010-03-25 19:59:00 -0300 | [diff] [blame] | 1 | #define _GNU_SOURCE |
| 2 | #include <ctype.h> |
| 3 | #include <dirent.h> |
| 4 | #include <errno.h> |
| 5 | #include <libgen.h> |
| 6 | #include <stdlib.h> |
| 7 | #include <stdio.h> |
| 8 | #include <string.h> |
| 9 | #include <sys/types.h> |
| 10 | #include <sys/stat.h> |
| 11 | #include <sys/param.h> |
| 12 | #include <fcntl.h> |
| 13 | #include <unistd.h> |
Arnaldo Carvalho de Melo | b36f19d | 2010-05-20 12:15:33 -0300 | [diff] [blame] | 14 | #include "build-id.h" |
Arnaldo Carvalho de Melo | 8a6c5b2 | 2010-07-20 14:42:52 -0300 | [diff] [blame] | 15 | #include "debug.h" |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 16 | #include "symbol.h" |
Arnaldo Carvalho de Melo | 5aab621 | 2010-03-25 19:59:00 -0300 | [diff] [blame] | 17 | #include "strlist.h" |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 18 | |
| 19 | #include <libelf.h> |
| 20 | #include <gelf.h> |
| 21 | #include <elf.h> |
Arnaldo Carvalho de Melo | f1617b4 | 2009-11-18 20:20:52 -0200 | [diff] [blame] | 22 | #include <limits.h> |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 23 | #include <sys/utsname.h> |
Peter Zijlstra | 2cdbc46 | 2009-08-05 14:05:16 +0200 | [diff] [blame] | 24 | |
Arnaldo Carvalho de Melo | c12e15e | 2009-11-21 14:31:25 -0200 | [diff] [blame] | 25 | #ifndef NT_GNU_BUILD_ID |
| 26 | #define NT_GNU_BUILD_ID 3 |
| 27 | #endif |
| 28 | |
Dave Martin | 21916c3 | 2010-07-30 09:08:08 -0300 | [diff] [blame] | 29 | static bool dso__build_id_equal(const struct dso *self, u8 *build_id); |
| 30 | 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] | 31 | 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] | 32 | static struct map *map__new2(u64 start, struct dso *dso, enum map_type type); |
Arnaldo Carvalho de Melo | c338aee | 2009-11-20 20:51:27 -0200 | [diff] [blame] | 33 | static int dso__load_kernel_sym(struct dso *self, struct map *map, |
Arnaldo Carvalho de Melo | 9de89fe | 2010-02-03 16:52:00 -0200 | [diff] [blame] | 34 | symbol_filter_t filter); |
Zhang, Yanmin | a1645ce | 2010-04-19 13:32:50 +0800 | [diff] [blame] | 35 | static int dso__load_guest_kernel_sym(struct dso *self, struct map *map, |
| 36 | symbol_filter_t filter); |
Arnaldo Carvalho de Melo | cc612d8 | 2009-11-23 16:39:10 -0200 | [diff] [blame] | 37 | static int vmlinux_path__nr_entries; |
| 38 | static char **vmlinux_path; |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 39 | |
Arnaldo Carvalho de Melo | 75be6cf | 2009-12-15 20:04:39 -0200 | [diff] [blame] | 40 | struct symbol_conf symbol_conf = { |
Arnaldo Carvalho de Melo | d599db3 | 2009-12-15 20:04:42 -0200 | [diff] [blame] | 41 | .exclude_other = true, |
Arnaldo Carvalho de Melo | b32d133 | 2009-11-24 12:05:15 -0200 | [diff] [blame] | 42 | .use_modules = true, |
| 43 | .try_vmlinux_path = true, |
| 44 | }; |
| 45 | |
Arnaldo Carvalho de Melo | 8a6c5b2 | 2010-07-20 14:42:52 -0300 | [diff] [blame] | 46 | int dso__name_len(const struct dso *self) |
| 47 | { |
| 48 | if (verbose) |
| 49 | return self->long_name_len; |
| 50 | |
| 51 | return self->short_name_len; |
| 52 | } |
| 53 | |
Arnaldo Carvalho de Melo | 3610583 | 2009-11-27 16:29:16 -0200 | [diff] [blame] | 54 | bool dso__loaded(const struct dso *self, enum map_type type) |
| 55 | { |
| 56 | return self->loaded & (1 << type); |
| 57 | } |
| 58 | |
Arnaldo Carvalho de Melo | 79406cd | 2009-12-11 18:50:22 -0200 | [diff] [blame] | 59 | bool dso__sorted_by_name(const struct dso *self, enum map_type type) |
| 60 | { |
| 61 | return self->sorted_by_name & (1 << type); |
| 62 | } |
| 63 | |
Arnaldo Carvalho de Melo | 79406cd | 2009-12-11 18:50:22 -0200 | [diff] [blame] | 64 | static void dso__set_sorted_by_name(struct dso *self, enum map_type type) |
| 65 | { |
| 66 | self->sorted_by_name |= (1 << type); |
| 67 | } |
| 68 | |
Arnaldo Carvalho de Melo | 36a3e64 | 2010-01-04 16:19:27 -0200 | [diff] [blame] | 69 | 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] | 70 | { |
| 71 | switch (map_type) { |
| 72 | case MAP__FUNCTION: |
| 73 | return symbol_type == 'T' || symbol_type == 'W'; |
Arnaldo Carvalho de Melo | f1dfa0b | 2009-12-11 14:50:39 -0200 | [diff] [blame] | 74 | case MAP__VARIABLE: |
| 75 | return symbol_type == 'D' || symbol_type == 'd'; |
Arnaldo Carvalho de Melo | 6893d4e | 2009-12-11 14:50:37 -0200 | [diff] [blame] | 76 | default: |
| 77 | return false; |
| 78 | } |
| 79 | } |
| 80 | |
Arnaldo Carvalho de Melo | fcf1203 | 2009-11-24 13:01:52 -0200 | [diff] [blame] | 81 | static void symbols__fixup_end(struct rb_root *self) |
Arnaldo Carvalho de Melo | af427bf | 2009-10-05 14:26:17 -0300 | [diff] [blame] | 82 | { |
Arnaldo Carvalho de Melo | fcf1203 | 2009-11-24 13:01:52 -0200 | [diff] [blame] | 83 | struct rb_node *nd, *prevnd = rb_first(self); |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 84 | struct symbol *curr, *prev; |
Arnaldo Carvalho de Melo | af427bf | 2009-10-05 14:26:17 -0300 | [diff] [blame] | 85 | |
| 86 | if (prevnd == NULL) |
| 87 | return; |
| 88 | |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 89 | curr = rb_entry(prevnd, struct symbol, rb_node); |
| 90 | |
Arnaldo Carvalho de Melo | af427bf | 2009-10-05 14:26:17 -0300 | [diff] [blame] | 91 | for (nd = rb_next(prevnd); nd; nd = rb_next(nd)) { |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 92 | prev = curr; |
| 93 | curr = rb_entry(nd, struct symbol, rb_node); |
Arnaldo Carvalho de Melo | af427bf | 2009-10-05 14:26:17 -0300 | [diff] [blame] | 94 | |
| 95 | if (prev->end == prev->start) |
| 96 | prev->end = curr->start - 1; |
Arnaldo Carvalho de Melo | af427bf | 2009-10-05 14:26:17 -0300 | [diff] [blame] | 97 | } |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 98 | |
| 99 | /* Last entry */ |
| 100 | if (curr->end == curr->start) |
| 101 | curr->end = roundup(curr->start, 4096); |
Arnaldo Carvalho de Melo | af427bf | 2009-10-05 14:26:17 -0300 | [diff] [blame] | 102 | } |
| 103 | |
Arnaldo Carvalho de Melo | 9958e1f | 2009-12-11 14:50:36 -0200 | [diff] [blame] | 104 | static void __map_groups__fixup_end(struct map_groups *self, enum map_type type) |
Arnaldo Carvalho de Melo | af427bf | 2009-10-05 14:26:17 -0300 | [diff] [blame] | 105 | { |
| 106 | struct map *prev, *curr; |
Arnaldo Carvalho de Melo | 95011c6 | 2009-11-27 16:29:20 -0200 | [diff] [blame] | 107 | struct rb_node *nd, *prevnd = rb_first(&self->maps[type]); |
Arnaldo Carvalho de Melo | af427bf | 2009-10-05 14:26:17 -0300 | [diff] [blame] | 108 | |
| 109 | if (prevnd == NULL) |
| 110 | return; |
| 111 | |
| 112 | curr = rb_entry(prevnd, struct map, rb_node); |
Arnaldo Carvalho de Melo | af427bf | 2009-10-05 14:26:17 -0300 | [diff] [blame] | 113 | |
| 114 | for (nd = rb_next(prevnd); nd; nd = rb_next(nd)) { |
| 115 | prev = curr; |
| 116 | curr = rb_entry(nd, struct map, rb_node); |
| 117 | prev->end = curr->start - 1; |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 118 | } |
Arnaldo Carvalho de Melo | 90c8321 | 2009-11-21 14:31:24 -0200 | [diff] [blame] | 119 | |
| 120 | /* |
| 121 | * We still haven't the actual symbols, so guess the |
| 122 | * last map final address. |
| 123 | */ |
| 124 | curr->end = ~0UL; |
Arnaldo Carvalho de Melo | af427bf | 2009-10-05 14:26:17 -0300 | [diff] [blame] | 125 | } |
| 126 | |
Arnaldo Carvalho de Melo | 9958e1f | 2009-12-11 14:50:36 -0200 | [diff] [blame] | 127 | static void map_groups__fixup_end(struct map_groups *self) |
Arnaldo Carvalho de Melo | 23ea4a3 | 2009-11-27 16:29:19 -0200 | [diff] [blame] | 128 | { |
| 129 | int i; |
| 130 | for (i = 0; i < MAP__NR_TYPES; ++i) |
Arnaldo Carvalho de Melo | 9958e1f | 2009-12-11 14:50:36 -0200 | [diff] [blame] | 131 | __map_groups__fixup_end(self, i); |
Arnaldo Carvalho de Melo | 23ea4a3 | 2009-11-27 16:29:19 -0200 | [diff] [blame] | 132 | } |
| 133 | |
Arnaldo Carvalho de Melo | c408fed | 2010-08-05 12:59:47 -0300 | [diff] [blame] | 134 | static struct symbol *symbol__new(u64 start, u64 len, u8 binding, |
| 135 | const char *name) |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 136 | { |
Arnaldo Carvalho de Melo | 0085c954 | 2009-05-28 14:55:13 -0300 | [diff] [blame] | 137 | size_t namelen = strlen(name) + 1; |
Arnaldo Carvalho de Melo | 5aab621 | 2010-03-25 19:59:00 -0300 | [diff] [blame] | 138 | struct symbol *self = calloc(1, (symbol_conf.priv_size + |
| 139 | sizeof(*self) + namelen)); |
Arnaldo Carvalho de Melo | 3647948 | 2009-11-24 12:05:16 -0200 | [diff] [blame] | 140 | if (self == NULL) |
Ingo Molnar | 0b73da3 | 2009-06-06 15:48:52 +0200 | [diff] [blame] | 141 | return NULL; |
| 142 | |
Arnaldo Carvalho de Melo | 75be6cf | 2009-12-15 20:04:39 -0200 | [diff] [blame] | 143 | if (symbol_conf.priv_size) |
| 144 | self = ((void *)self) + symbol_conf.priv_size; |
Arnaldo Carvalho de Melo | 3647948 | 2009-11-24 12:05:16 -0200 | [diff] [blame] | 145 | |
Arnaldo Carvalho de Melo | fefb0b9 | 2010-05-10 13:57:51 -0300 | [diff] [blame] | 146 | self->start = start; |
| 147 | self->end = len ? start + len - 1 : start; |
Arnaldo Carvalho de Melo | c408fed | 2010-08-05 12:59:47 -0300 | [diff] [blame] | 148 | self->binding = binding; |
Arnaldo Carvalho de Melo | fefb0b9 | 2010-05-10 13:57:51 -0300 | [diff] [blame] | 149 | self->namelen = namelen - 1; |
Arnaldo Carvalho de Melo | e420499 | 2009-10-20 14:25:40 -0200 | [diff] [blame] | 150 | |
Arnaldo Carvalho de Melo | 29a9f66 | 2010-02-03 16:52:06 -0200 | [diff] [blame] | 151 | pr_debug4("%s: %s %#Lx-%#Lx\n", __func__, name, start, self->end); |
Arnaldo Carvalho de Melo | e420499 | 2009-10-20 14:25:40 -0200 | [diff] [blame] | 152 | |
Ingo Molnar | 0b73da3 | 2009-06-06 15:48:52 +0200 | [diff] [blame] | 153 | memcpy(self->name, name, namelen); |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 154 | |
| 155 | return self; |
| 156 | } |
| 157 | |
Arnaldo Carvalho de Melo | 628ada0 | 2010-02-25 12:57:40 -0300 | [diff] [blame] | 158 | void symbol__delete(struct symbol *self) |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 159 | { |
Arnaldo Carvalho de Melo | 75be6cf | 2009-12-15 20:04:39 -0200 | [diff] [blame] | 160 | free(((void *)self) - symbol_conf.priv_size); |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 161 | } |
| 162 | |
| 163 | static size_t symbol__fprintf(struct symbol *self, FILE *fp) |
| 164 | { |
Arnaldo Carvalho de Melo | c408fed | 2010-08-05 12:59:47 -0300 | [diff] [blame] | 165 | return fprintf(fp, " %llx-%llx %c %s\n", |
| 166 | self->start, self->end, |
| 167 | self->binding == STB_GLOBAL ? 'g' : |
| 168 | self->binding == STB_LOCAL ? 'l' : 'w', |
| 169 | self->name); |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 170 | } |
| 171 | |
Arnaldo Carvalho de Melo | b7cece7 | 2010-01-13 13:22:17 -0200 | [diff] [blame] | 172 | void dso__set_long_name(struct dso *self, char *name) |
Arnaldo Carvalho de Melo | cfc10d3 | 2009-11-17 15:40:53 -0200 | [diff] [blame] | 173 | { |
Arnaldo Carvalho de Melo | ef6ae72 | 2009-11-20 20:51:29 -0200 | [diff] [blame] | 174 | if (name == NULL) |
| 175 | return; |
Arnaldo Carvalho de Melo | cfc10d3 | 2009-11-17 15:40:53 -0200 | [diff] [blame] | 176 | self->long_name = name; |
| 177 | self->long_name_len = strlen(name); |
| 178 | } |
| 179 | |
Arnaldo Carvalho de Melo | b63be8d | 2010-03-15 15:03:50 -0300 | [diff] [blame] | 180 | static void dso__set_short_name(struct dso *self, const char *name) |
| 181 | { |
| 182 | if (name == NULL) |
| 183 | return; |
| 184 | self->short_name = name; |
| 185 | self->short_name_len = strlen(name); |
| 186 | } |
| 187 | |
Arnaldo Carvalho de Melo | cfc10d3 | 2009-11-17 15:40:53 -0200 | [diff] [blame] | 188 | static void dso__set_basename(struct dso *self) |
| 189 | { |
Arnaldo Carvalho de Melo | b63be8d | 2010-03-15 15:03:50 -0300 | [diff] [blame] | 190 | dso__set_short_name(self, basename(self->long_name)); |
Arnaldo Carvalho de Melo | cfc10d3 | 2009-11-17 15:40:53 -0200 | [diff] [blame] | 191 | } |
| 192 | |
Arnaldo Carvalho de Melo | 00a192b | 2009-10-30 16:28:24 -0200 | [diff] [blame] | 193 | struct dso *dso__new(const char *name) |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 194 | { |
Arnaldo Carvalho de Melo | 5aab621 | 2010-03-25 19:59:00 -0300 | [diff] [blame] | 195 | struct dso *self = calloc(1, sizeof(*self) + strlen(name) + 1); |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 196 | |
| 197 | if (self != NULL) { |
Arnaldo Carvalho de Melo | 6a4694a | 2009-11-27 16:29:17 -0200 | [diff] [blame] | 198 | int i; |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 199 | strcpy(self->name, name); |
Arnaldo Carvalho de Melo | cfc10d3 | 2009-11-17 15:40:53 -0200 | [diff] [blame] | 200 | dso__set_long_name(self, self->name); |
Arnaldo Carvalho de Melo | b63be8d | 2010-03-15 15:03:50 -0300 | [diff] [blame] | 201 | dso__set_short_name(self, self->name); |
Arnaldo Carvalho de Melo | 6a4694a | 2009-11-27 16:29:17 -0200 | [diff] [blame] | 202 | for (i = 0; i < MAP__NR_TYPES; ++i) |
Arnaldo Carvalho de Melo | 79406cd | 2009-12-11 18:50:22 -0200 | [diff] [blame] | 203 | self->symbols[i] = self->symbol_names[i] = RB_ROOT; |
Arnaldo Carvalho de Melo | 52d422d | 2009-07-10 22:47:28 -0300 | [diff] [blame] | 204 | self->slen_calculated = 0; |
Arnaldo Carvalho de Melo | 94cb9e3 | 2009-08-06 14:43:17 -0300 | [diff] [blame] | 205 | self->origin = DSO__ORIG_NOT_FOUND; |
Arnaldo Carvalho de Melo | 8d06367 | 2009-11-04 18:50:43 -0200 | [diff] [blame] | 206 | self->loaded = 0; |
Arnaldo Carvalho de Melo | 79406cd | 2009-12-11 18:50:22 -0200 | [diff] [blame] | 207 | self->sorted_by_name = 0; |
Arnaldo Carvalho de Melo | 8d06367 | 2009-11-04 18:50:43 -0200 | [diff] [blame] | 208 | self->has_build_id = 0; |
Zhang, Yanmin | a1645ce | 2010-04-19 13:32:50 +0800 | [diff] [blame] | 209 | self->kernel = DSO_TYPE_USER; |
Masami Hiramatsu | 0ab061c | 2010-04-21 15:56:16 -0400 | [diff] [blame] | 210 | INIT_LIST_HEAD(&self->node); |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 211 | } |
| 212 | |
| 213 | return self; |
| 214 | } |
| 215 | |
Arnaldo Carvalho de Melo | fcf1203 | 2009-11-24 13:01:52 -0200 | [diff] [blame] | 216 | static void symbols__delete(struct rb_root *self) |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 217 | { |
| 218 | struct symbol *pos; |
Arnaldo Carvalho de Melo | fcf1203 | 2009-11-24 13:01:52 -0200 | [diff] [blame] | 219 | struct rb_node *next = rb_first(self); |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 220 | |
| 221 | while (next) { |
| 222 | pos = rb_entry(next, struct symbol, rb_node); |
| 223 | next = rb_next(&pos->rb_node); |
Arnaldo Carvalho de Melo | fcf1203 | 2009-11-24 13:01:52 -0200 | [diff] [blame] | 224 | rb_erase(&pos->rb_node, self); |
Arnaldo Carvalho de Melo | 00a192b | 2009-10-30 16:28:24 -0200 | [diff] [blame] | 225 | symbol__delete(pos); |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 226 | } |
| 227 | } |
| 228 | |
| 229 | void dso__delete(struct dso *self) |
| 230 | { |
Arnaldo Carvalho de Melo | 6a4694a | 2009-11-27 16:29:17 -0200 | [diff] [blame] | 231 | int i; |
| 232 | for (i = 0; i < MAP__NR_TYPES; ++i) |
| 233 | symbols__delete(&self->symbols[i]); |
Arnaldo Carvalho de Melo | 6e40625 | 2010-07-29 15:11:30 -0300 | [diff] [blame] | 234 | if (self->sname_alloc) |
| 235 | free((char *)self->short_name); |
| 236 | if (self->lname_alloc) |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 237 | free(self->long_name); |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 238 | free(self); |
| 239 | } |
| 240 | |
Arnaldo Carvalho de Melo | 8d06367 | 2009-11-04 18:50:43 -0200 | [diff] [blame] | 241 | void dso__set_build_id(struct dso *self, void *build_id) |
| 242 | { |
| 243 | memcpy(self->build_id, build_id, sizeof(self->build_id)); |
| 244 | self->has_build_id = 1; |
| 245 | } |
| 246 | |
Arnaldo Carvalho de Melo | fcf1203 | 2009-11-24 13:01:52 -0200 | [diff] [blame] | 247 | static void symbols__insert(struct rb_root *self, struct symbol *sym) |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 248 | { |
Arnaldo Carvalho de Melo | fcf1203 | 2009-11-24 13:01:52 -0200 | [diff] [blame] | 249 | struct rb_node **p = &self->rb_node; |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 250 | struct rb_node *parent = NULL; |
Paul Mackerras | 9cffa8d | 2009-06-19 22:21:42 +1000 | [diff] [blame] | 251 | const u64 ip = sym->start; |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 252 | struct symbol *s; |
| 253 | |
| 254 | while (*p != NULL) { |
| 255 | parent = *p; |
| 256 | s = rb_entry(parent, struct symbol, rb_node); |
| 257 | if (ip < s->start) |
| 258 | p = &(*p)->rb_left; |
| 259 | else |
| 260 | p = &(*p)->rb_right; |
| 261 | } |
| 262 | rb_link_node(&sym->rb_node, parent, p); |
Arnaldo Carvalho de Melo | fcf1203 | 2009-11-24 13:01:52 -0200 | [diff] [blame] | 263 | rb_insert_color(&sym->rb_node, self); |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 264 | } |
| 265 | |
Arnaldo Carvalho de Melo | fcf1203 | 2009-11-24 13:01:52 -0200 | [diff] [blame] | 266 | static struct symbol *symbols__find(struct rb_root *self, u64 ip) |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 267 | { |
| 268 | struct rb_node *n; |
| 269 | |
| 270 | if (self == NULL) |
| 271 | return NULL; |
| 272 | |
Arnaldo Carvalho de Melo | fcf1203 | 2009-11-24 13:01:52 -0200 | [diff] [blame] | 273 | n = self->rb_node; |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 274 | |
| 275 | while (n) { |
| 276 | struct symbol *s = rb_entry(n, struct symbol, rb_node); |
| 277 | |
| 278 | if (ip < s->start) |
| 279 | n = n->rb_left; |
| 280 | else if (ip > s->end) |
| 281 | n = n->rb_right; |
| 282 | else |
| 283 | return s; |
| 284 | } |
| 285 | |
| 286 | return NULL; |
| 287 | } |
| 288 | |
Arnaldo Carvalho de Melo | 79406cd | 2009-12-11 18:50:22 -0200 | [diff] [blame] | 289 | struct symbol_name_rb_node { |
| 290 | struct rb_node rb_node; |
| 291 | struct symbol sym; |
| 292 | }; |
| 293 | |
| 294 | static void symbols__insert_by_name(struct rb_root *self, struct symbol *sym) |
| 295 | { |
| 296 | struct rb_node **p = &self->rb_node; |
| 297 | struct rb_node *parent = NULL; |
Rabin Vincent | 02a9d03 | 2010-11-23 22:08:18 +0530 | [diff] [blame] | 298 | struct symbol_name_rb_node *symn, *s; |
| 299 | |
| 300 | symn = container_of(sym, struct symbol_name_rb_node, sym); |
Arnaldo Carvalho de Melo | 79406cd | 2009-12-11 18:50:22 -0200 | [diff] [blame] | 301 | |
| 302 | while (*p != NULL) { |
| 303 | parent = *p; |
| 304 | s = rb_entry(parent, struct symbol_name_rb_node, rb_node); |
| 305 | if (strcmp(sym->name, s->sym.name) < 0) |
| 306 | p = &(*p)->rb_left; |
| 307 | else |
| 308 | p = &(*p)->rb_right; |
| 309 | } |
| 310 | rb_link_node(&symn->rb_node, parent, p); |
| 311 | rb_insert_color(&symn->rb_node, self); |
| 312 | } |
| 313 | |
| 314 | static void symbols__sort_by_name(struct rb_root *self, struct rb_root *source) |
| 315 | { |
| 316 | struct rb_node *nd; |
| 317 | |
| 318 | for (nd = rb_first(source); nd; nd = rb_next(nd)) { |
| 319 | struct symbol *pos = rb_entry(nd, struct symbol, rb_node); |
| 320 | symbols__insert_by_name(self, pos); |
| 321 | } |
| 322 | } |
| 323 | |
| 324 | static struct symbol *symbols__find_by_name(struct rb_root *self, const char *name) |
| 325 | { |
| 326 | struct rb_node *n; |
| 327 | |
| 328 | if (self == NULL) |
| 329 | return NULL; |
| 330 | |
| 331 | n = self->rb_node; |
| 332 | |
| 333 | while (n) { |
| 334 | struct symbol_name_rb_node *s; |
| 335 | int cmp; |
| 336 | |
| 337 | s = rb_entry(n, struct symbol_name_rb_node, rb_node); |
| 338 | cmp = strcmp(name, s->sym.name); |
| 339 | |
| 340 | if (cmp < 0) |
| 341 | n = n->rb_left; |
| 342 | else if (cmp > 0) |
| 343 | n = n->rb_right; |
| 344 | else |
| 345 | return &s->sym; |
| 346 | } |
| 347 | |
| 348 | return NULL; |
| 349 | } |
| 350 | |
| 351 | struct symbol *dso__find_symbol(struct dso *self, |
| 352 | enum map_type type, u64 addr) |
Arnaldo Carvalho de Melo | fcf1203 | 2009-11-24 13:01:52 -0200 | [diff] [blame] | 353 | { |
Arnaldo Carvalho de Melo | 6a4694a | 2009-11-27 16:29:17 -0200 | [diff] [blame] | 354 | return symbols__find(&self->symbols[type], addr); |
Arnaldo Carvalho de Melo | fcf1203 | 2009-11-24 13:01:52 -0200 | [diff] [blame] | 355 | } |
| 356 | |
Arnaldo Carvalho de Melo | 79406cd | 2009-12-11 18:50:22 -0200 | [diff] [blame] | 357 | struct symbol *dso__find_symbol_by_name(struct dso *self, enum map_type type, |
| 358 | const char *name) |
| 359 | { |
| 360 | return symbols__find_by_name(&self->symbol_names[type], name); |
| 361 | } |
| 362 | |
| 363 | void dso__sort_by_name(struct dso *self, enum map_type type) |
| 364 | { |
| 365 | dso__set_sorted_by_name(self, type); |
| 366 | return symbols__sort_by_name(&self->symbol_names[type], |
| 367 | &self->symbols[type]); |
| 368 | } |
| 369 | |
Arnaldo Carvalho de Melo | ef12a14 | 2010-01-20 15:28:45 -0200 | [diff] [blame] | 370 | int build_id__sprintf(const u8 *self, int len, char *bf) |
Arnaldo Carvalho de Melo | 8d06367 | 2009-11-04 18:50:43 -0200 | [diff] [blame] | 371 | { |
| 372 | char *bid = bf; |
Arnaldo Carvalho de Melo | ef12a14 | 2010-01-20 15:28:45 -0200 | [diff] [blame] | 373 | const u8 *raw = self; |
Arnaldo Carvalho de Melo | 8d06367 | 2009-11-04 18:50:43 -0200 | [diff] [blame] | 374 | int i; |
| 375 | |
| 376 | for (i = 0; i < len; ++i) { |
| 377 | sprintf(bid, "%02x", *raw); |
| 378 | ++raw; |
| 379 | bid += 2; |
| 380 | } |
| 381 | |
| 382 | return raw - self; |
| 383 | } |
| 384 | |
Arnaldo Carvalho de Melo | 9e03eb2 | 2009-11-16 16:32:44 -0200 | [diff] [blame] | 385 | size_t dso__fprintf_buildid(struct dso *self, FILE *fp) |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 386 | { |
Arnaldo Carvalho de Melo | 8d06367 | 2009-11-04 18:50:43 -0200 | [diff] [blame] | 387 | char sbuild_id[BUILD_ID_SIZE * 2 + 1]; |
Arnaldo Carvalho de Melo | 8d06367 | 2009-11-04 18:50:43 -0200 | [diff] [blame] | 388 | |
| 389 | build_id__sprintf(self->build_id, sizeof(self->build_id), sbuild_id); |
Arnaldo Carvalho de Melo | 9e03eb2 | 2009-11-16 16:32:44 -0200 | [diff] [blame] | 390 | return fprintf(fp, "%s", sbuild_id); |
| 391 | } |
| 392 | |
Srikar Dronamraju | 90f18e6 | 2010-08-25 19:13:29 +0530 | [diff] [blame] | 393 | size_t dso__fprintf_symbols_by_name(struct dso *self, enum map_type type, FILE *fp) |
| 394 | { |
| 395 | size_t ret = 0; |
| 396 | struct rb_node *nd; |
| 397 | struct symbol_name_rb_node *pos; |
| 398 | |
| 399 | for (nd = rb_first(&self->symbol_names[type]); nd; nd = rb_next(nd)) { |
| 400 | pos = rb_entry(nd, struct symbol_name_rb_node, rb_node); |
| 401 | fprintf(fp, "%s\n", pos->sym.name); |
| 402 | } |
| 403 | |
| 404 | return ret; |
| 405 | } |
| 406 | |
Arnaldo Carvalho de Melo | 95011c6 | 2009-11-27 16:29:20 -0200 | [diff] [blame] | 407 | size_t dso__fprintf(struct dso *self, enum map_type type, FILE *fp) |
Arnaldo Carvalho de Melo | 9e03eb2 | 2009-11-16 16:32:44 -0200 | [diff] [blame] | 408 | { |
| 409 | struct rb_node *nd; |
| 410 | size_t ret = fprintf(fp, "dso: %s (", self->short_name); |
| 411 | |
Arnaldo Carvalho de Melo | 3846df2 | 2010-02-22 16:15:39 -0300 | [diff] [blame] | 412 | if (self->short_name != self->long_name) |
| 413 | ret += fprintf(fp, "%s, ", self->long_name); |
| 414 | ret += fprintf(fp, "%s, %sloaded, ", map_type__name[type], |
| 415 | self->loaded ? "" : "NOT "); |
Arnaldo Carvalho de Melo | 9e03eb2 | 2009-11-16 16:32:44 -0200 | [diff] [blame] | 416 | ret += dso__fprintf_buildid(self, fp); |
Arnaldo Carvalho de Melo | 6a4694a | 2009-11-27 16:29:17 -0200 | [diff] [blame] | 417 | ret += fprintf(fp, ")\n"); |
Arnaldo Carvalho de Melo | 95011c6 | 2009-11-27 16:29:20 -0200 | [diff] [blame] | 418 | for (nd = rb_first(&self->symbols[type]); nd; nd = rb_next(nd)) { |
| 419 | struct symbol *pos = rb_entry(nd, struct symbol, rb_node); |
| 420 | ret += symbol__fprintf(pos, fp); |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 421 | } |
| 422 | |
| 423 | return ret; |
| 424 | } |
| 425 | |
Arnaldo Carvalho de Melo | 9e20144 | 2010-01-14 18:30:06 -0200 | [diff] [blame] | 426 | int kallsyms__parse(const char *filename, void *arg, |
| 427 | int (*process_symbol)(void *arg, const char *name, |
Arnaldo Carvalho de Melo | 682b335 | 2010-01-04 16:19:26 -0200 | [diff] [blame] | 428 | char type, u64 start)) |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 429 | { |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 430 | char *line = NULL; |
| 431 | size_t n; |
Arnaldo Carvalho de Melo | 682b335 | 2010-01-04 16:19:26 -0200 | [diff] [blame] | 432 | int err = 0; |
Arnaldo Carvalho de Melo | 9e20144 | 2010-01-14 18:30:06 -0200 | [diff] [blame] | 433 | FILE *file = fopen(filename, "r"); |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 434 | |
| 435 | if (file == NULL) |
| 436 | goto out_failure; |
| 437 | |
| 438 | while (!feof(file)) { |
Paul Mackerras | 9cffa8d | 2009-06-19 22:21:42 +1000 | [diff] [blame] | 439 | u64 start; |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 440 | int line_len, len; |
| 441 | char symbol_type; |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 442 | char *symbol_name; |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 443 | |
| 444 | line_len = getline(&line, &n, file); |
Zhang, Yanmin | a1645ce | 2010-04-19 13:32:50 +0800 | [diff] [blame] | 445 | if (line_len < 0 || !line) |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 446 | break; |
| 447 | |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 448 | line[--line_len] = '\0'; /* \n */ |
| 449 | |
Arnaldo Carvalho de Melo | a0055ae | 2009-06-01 17:50:19 -0300 | [diff] [blame] | 450 | len = hex2u64(line, &start); |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 451 | |
| 452 | len++; |
| 453 | if (len + 2 >= line_len) |
| 454 | continue; |
| 455 | |
| 456 | symbol_type = toupper(line[len]); |
Arnaldo Carvalho de Melo | af427bf | 2009-10-05 14:26:17 -0300 | [diff] [blame] | 457 | symbol_name = line + len + 2; |
Arnaldo Carvalho de Melo | af427bf | 2009-10-05 14:26:17 -0300 | [diff] [blame] | 458 | |
Arnaldo Carvalho de Melo | 682b335 | 2010-01-04 16:19:26 -0200 | [diff] [blame] | 459 | err = process_symbol(arg, symbol_name, symbol_type, start); |
| 460 | if (err) |
| 461 | break; |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 462 | } |
| 463 | |
| 464 | free(line); |
| 465 | fclose(file); |
Arnaldo Carvalho de Melo | 682b335 | 2010-01-04 16:19:26 -0200 | [diff] [blame] | 466 | return err; |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 467 | |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 468 | out_failure: |
| 469 | return -1; |
| 470 | } |
| 471 | |
Arnaldo Carvalho de Melo | 682b335 | 2010-01-04 16:19:26 -0200 | [diff] [blame] | 472 | struct process_kallsyms_args { |
| 473 | struct map *map; |
| 474 | struct dso *dso; |
| 475 | }; |
| 476 | |
Arnaldo Carvalho de Melo | c408fed | 2010-08-05 12:59:47 -0300 | [diff] [blame] | 477 | static u8 kallsyms2elf_type(char type) |
| 478 | { |
| 479 | if (type == 'W') |
| 480 | return STB_WEAK; |
| 481 | |
| 482 | return isupper(type) ? STB_GLOBAL : STB_LOCAL; |
| 483 | } |
| 484 | |
Arnaldo Carvalho de Melo | 682b335 | 2010-01-04 16:19:26 -0200 | [diff] [blame] | 485 | static int map__process_kallsym_symbol(void *arg, const char *name, |
| 486 | char type, u64 start) |
| 487 | { |
| 488 | struct symbol *sym; |
| 489 | struct process_kallsyms_args *a = arg; |
| 490 | struct rb_root *root = &a->dso->symbols[a->map->type]; |
| 491 | |
| 492 | if (!symbol_type__is_a(type, a->map->type)) |
| 493 | return 0; |
| 494 | |
| 495 | /* |
| 496 | * Will fix up the end later, when we have all symbols sorted. |
| 497 | */ |
Arnaldo Carvalho de Melo | c408fed | 2010-08-05 12:59:47 -0300 | [diff] [blame] | 498 | sym = symbol__new(start, 0, kallsyms2elf_type(type), name); |
Arnaldo Carvalho de Melo | 682b335 | 2010-01-04 16:19:26 -0200 | [diff] [blame] | 499 | |
| 500 | if (sym == NULL) |
| 501 | return -ENOMEM; |
| 502 | /* |
| 503 | * We will pass the symbols to the filter later, in |
| 504 | * map__split_kallsyms, when we have split the maps per module |
| 505 | */ |
| 506 | symbols__insert(root, sym); |
Zhang, Yanmin | a1645ce | 2010-04-19 13:32:50 +0800 | [diff] [blame] | 507 | |
Arnaldo Carvalho de Melo | 682b335 | 2010-01-04 16:19:26 -0200 | [diff] [blame] | 508 | return 0; |
| 509 | } |
| 510 | |
| 511 | /* |
| 512 | * Loads the function entries in /proc/kallsyms into kernel_map->dso, |
| 513 | * so that we can in the next step set the symbol ->end address and then |
| 514 | * call kernel_maps__split_kallsyms. |
| 515 | */ |
Arnaldo Carvalho de Melo | 9e20144 | 2010-01-14 18:30:06 -0200 | [diff] [blame] | 516 | static int dso__load_all_kallsyms(struct dso *self, const char *filename, |
| 517 | struct map *map) |
Arnaldo Carvalho de Melo | 682b335 | 2010-01-04 16:19:26 -0200 | [diff] [blame] | 518 | { |
| 519 | struct process_kallsyms_args args = { .map = map, .dso = self, }; |
Arnaldo Carvalho de Melo | 9e20144 | 2010-01-14 18:30:06 -0200 | [diff] [blame] | 520 | return kallsyms__parse(filename, &args, map__process_kallsym_symbol); |
Arnaldo Carvalho de Melo | 682b335 | 2010-01-04 16:19:26 -0200 | [diff] [blame] | 521 | } |
| 522 | |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 523 | /* |
| 524 | * Split the symbols into maps, making sure there are no overlaps, i.e. the |
| 525 | * kernel range is broken in several maps, named [kernel].N, as we don't have |
| 526 | * the original ELF section names vmlinux have. |
| 527 | */ |
Arnaldo Carvalho de Melo | 9958e1f | 2009-12-11 14:50:36 -0200 | [diff] [blame] | 528 | static int dso__split_kallsyms(struct dso *self, struct map *map, |
Arnaldo Carvalho de Melo | 9de89fe | 2010-02-03 16:52:00 -0200 | [diff] [blame] | 529 | symbol_filter_t filter) |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 530 | { |
Arnaldo Carvalho de Melo | 9de89fe | 2010-02-03 16:52:00 -0200 | [diff] [blame] | 531 | struct map_groups *kmaps = map__kmap(map)->kmaps; |
Arnaldo Carvalho de Melo | 23346f2 | 2010-04-27 21:17:50 -0300 | [diff] [blame] | 532 | struct machine *machine = kmaps->machine; |
Arnaldo Carvalho de Melo | 4e06255 | 2009-11-27 16:29:18 -0200 | [diff] [blame] | 533 | struct map *curr_map = map; |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 534 | struct symbol *pos; |
| 535 | int count = 0; |
Arnaldo Carvalho de Melo | 4e06255 | 2009-11-27 16:29:18 -0200 | [diff] [blame] | 536 | struct rb_root *root = &self->symbols[map->type]; |
| 537 | struct rb_node *next = rb_first(root); |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 538 | int kernel_range = 0; |
| 539 | |
| 540 | while (next) { |
| 541 | char *module; |
| 542 | |
| 543 | pos = rb_entry(next, struct symbol, rb_node); |
| 544 | next = rb_next(&pos->rb_node); |
| 545 | |
| 546 | module = strchr(pos->name, '\t'); |
| 547 | if (module) { |
Arnaldo Carvalho de Melo | 75be6cf | 2009-12-15 20:04:39 -0200 | [diff] [blame] | 548 | if (!symbol_conf.use_modules) |
Arnaldo Carvalho de Melo | 1de8e24 | 2009-11-27 16:29:21 -0200 | [diff] [blame] | 549 | goto discard_symbol; |
| 550 | |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 551 | *module++ = '\0'; |
| 552 | |
Arnaldo Carvalho de Melo | b7cece7 | 2010-01-13 13:22:17 -0200 | [diff] [blame] | 553 | if (strcmp(curr_map->dso->short_name, module)) { |
Zhang, Yanmin | a1645ce | 2010-04-19 13:32:50 +0800 | [diff] [blame] | 554 | if (curr_map != map && |
Arnaldo Carvalho de Melo | 23346f2 | 2010-04-27 21:17:50 -0300 | [diff] [blame] | 555 | self->kernel == DSO_TYPE_GUEST_KERNEL && |
| 556 | machine__is_default_guest(machine)) { |
Zhang, Yanmin | a1645ce | 2010-04-19 13:32:50 +0800 | [diff] [blame] | 557 | /* |
| 558 | * We assume all symbols of a module are |
| 559 | * continuous in * kallsyms, so curr_map |
| 560 | * points to a module and all its |
| 561 | * symbols are in its kmap. Mark it as |
| 562 | * loaded. |
| 563 | */ |
| 564 | dso__set_loaded(curr_map->dso, |
| 565 | curr_map->type); |
Arnaldo Carvalho de Melo | af427bf | 2009-10-05 14:26:17 -0300 | [diff] [blame] | 566 | } |
Arnaldo Carvalho de Melo | b7cece7 | 2010-01-13 13:22:17 -0200 | [diff] [blame] | 567 | |
Zhang, Yanmin | a1645ce | 2010-04-19 13:32:50 +0800 | [diff] [blame] | 568 | curr_map = map_groups__find_by_name(kmaps, |
| 569 | map->type, module); |
| 570 | if (curr_map == NULL) { |
Arnaldo Carvalho de Melo | 2f51903 | 2010-05-17 17:57:59 -0300 | [diff] [blame] | 571 | pr_debug("%s/proc/{kallsyms,modules} " |
Zhang, Yanmin | a1645ce | 2010-04-19 13:32:50 +0800 | [diff] [blame] | 572 | "inconsistency while looking " |
| 573 | "for \"%s\" module!\n", |
Arnaldo Carvalho de Melo | 23346f2 | 2010-04-27 21:17:50 -0300 | [diff] [blame] | 574 | machine->root_dir, module); |
Zhang, Yanmin | a1645ce | 2010-04-19 13:32:50 +0800 | [diff] [blame] | 575 | curr_map = map; |
| 576 | goto discard_symbol; |
| 577 | } |
| 578 | |
| 579 | if (curr_map->dso->loaded && |
Arnaldo Carvalho de Melo | 23346f2 | 2010-04-27 21:17:50 -0300 | [diff] [blame] | 580 | !machine__is_default_guest(machine)) |
Arnaldo Carvalho de Melo | b7cece7 | 2010-01-13 13:22:17 -0200 | [diff] [blame] | 581 | goto discard_symbol; |
Arnaldo Carvalho de Melo | af427bf | 2009-10-05 14:26:17 -0300 | [diff] [blame] | 582 | } |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 583 | /* |
| 584 | * So that we look just like we get from .ko files, |
| 585 | * i.e. not prelinked, relative to map->start. |
| 586 | */ |
Arnaldo Carvalho de Melo | 4e06255 | 2009-11-27 16:29:18 -0200 | [diff] [blame] | 587 | pos->start = curr_map->map_ip(curr_map, pos->start); |
| 588 | pos->end = curr_map->map_ip(curr_map, pos->end); |
| 589 | } else if (curr_map != map) { |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 590 | char dso_name[PATH_MAX]; |
| 591 | struct dso *dso; |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 592 | |
Zhang, Yanmin | a1645ce | 2010-04-19 13:32:50 +0800 | [diff] [blame] | 593 | if (self->kernel == DSO_TYPE_GUEST_KERNEL) |
| 594 | snprintf(dso_name, sizeof(dso_name), |
| 595 | "[guest.kernel].%d", |
| 596 | kernel_range++); |
| 597 | else |
| 598 | snprintf(dso_name, sizeof(dso_name), |
| 599 | "[kernel].%d", |
| 600 | kernel_range++); |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 601 | |
Arnaldo Carvalho de Melo | 00a192b | 2009-10-30 16:28:24 -0200 | [diff] [blame] | 602 | dso = dso__new(dso_name); |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 603 | if (dso == NULL) |
| 604 | return -1; |
| 605 | |
Zhang, Yanmin | a1645ce | 2010-04-19 13:32:50 +0800 | [diff] [blame] | 606 | dso->kernel = self->kernel; |
| 607 | |
Arnaldo Carvalho de Melo | 4e06255 | 2009-11-27 16:29:18 -0200 | [diff] [blame] | 608 | curr_map = map__new2(pos->start, dso, map->type); |
Zhang, Yanmin | 37fe5fc | 2010-02-25 11:00:51 +0800 | [diff] [blame] | 609 | if (curr_map == NULL) { |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 610 | dso__delete(dso); |
| 611 | return -1; |
| 612 | } |
| 613 | |
Arnaldo Carvalho de Melo | 4e06255 | 2009-11-27 16:29:18 -0200 | [diff] [blame] | 614 | 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] | 615 | map_groups__insert(kmaps, curr_map); |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 616 | ++kernel_range; |
| 617 | } |
| 618 | |
Arnaldo Carvalho de Melo | 4e06255 | 2009-11-27 16:29:18 -0200 | [diff] [blame] | 619 | if (filter && filter(curr_map, pos)) { |
Arnaldo Carvalho de Melo | 1de8e24 | 2009-11-27 16:29:21 -0200 | [diff] [blame] | 620 | discard_symbol: rb_erase(&pos->rb_node, root); |
Arnaldo Carvalho de Melo | 00a192b | 2009-10-30 16:28:24 -0200 | [diff] [blame] | 621 | symbol__delete(pos); |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 622 | } else { |
Arnaldo Carvalho de Melo | 4e06255 | 2009-11-27 16:29:18 -0200 | [diff] [blame] | 623 | if (curr_map != map) { |
| 624 | rb_erase(&pos->rb_node, root); |
| 625 | symbols__insert(&curr_map->dso->symbols[curr_map->type], pos); |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 626 | } |
Mike Galbraith | 9974f49 | 2009-07-02 08:05:58 +0200 | [diff] [blame] | 627 | count++; |
| 628 | } |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 629 | } |
| 630 | |
Zhang, Yanmin | a1645ce | 2010-04-19 13:32:50 +0800 | [diff] [blame] | 631 | if (curr_map != map && |
| 632 | self->kernel == DSO_TYPE_GUEST_KERNEL && |
Arnaldo Carvalho de Melo | 23346f2 | 2010-04-27 21:17:50 -0300 | [diff] [blame] | 633 | machine__is_default_guest(kmaps->machine)) { |
Zhang, Yanmin | a1645ce | 2010-04-19 13:32:50 +0800 | [diff] [blame] | 634 | dso__set_loaded(curr_map->dso, curr_map->type); |
| 635 | } |
| 636 | |
Mike Galbraith | 9974f49 | 2009-07-02 08:05:58 +0200 | [diff] [blame] | 637 | return count; |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 638 | } |
| 639 | |
Arnaldo Carvalho de Melo | 9de89fe | 2010-02-03 16:52:00 -0200 | [diff] [blame] | 640 | int dso__load_kallsyms(struct dso *self, const char *filename, |
| 641 | struct map *map, symbol_filter_t filter) |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 642 | { |
Arnaldo Carvalho de Melo | 9e20144 | 2010-01-14 18:30:06 -0200 | [diff] [blame] | 643 | if (dso__load_all_kallsyms(self, filename, map) < 0) |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 644 | return -1; |
| 645 | |
Arnaldo Carvalho de Melo | 4e06255 | 2009-11-27 16:29:18 -0200 | [diff] [blame] | 646 | symbols__fixup_end(&self->symbols[map->type]); |
Zhang, Yanmin | a1645ce | 2010-04-19 13:32:50 +0800 | [diff] [blame] | 647 | if (self->kernel == DSO_TYPE_GUEST_KERNEL) |
| 648 | self->origin = DSO__ORIG_GUEST_KERNEL; |
| 649 | else |
| 650 | self->origin = DSO__ORIG_KERNEL; |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 651 | |
Arnaldo Carvalho de Melo | 9de89fe | 2010-02-03 16:52:00 -0200 | [diff] [blame] | 652 | return dso__split_kallsyms(self, map, filter); |
Arnaldo Carvalho de Melo | af427bf | 2009-10-05 14:26:17 -0300 | [diff] [blame] | 653 | } |
| 654 | |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 655 | static int dso__load_perf_map(struct dso *self, struct map *map, |
Arnaldo Carvalho de Melo | 6beba7a | 2009-10-21 17:34:06 -0200 | [diff] [blame] | 656 | symbol_filter_t filter) |
Pekka Enberg | 80d496b | 2009-06-08 21:12:48 +0300 | [diff] [blame] | 657 | { |
| 658 | char *line = NULL; |
| 659 | size_t n; |
| 660 | FILE *file; |
| 661 | int nr_syms = 0; |
| 662 | |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 663 | file = fopen(self->long_name, "r"); |
Pekka Enberg | 80d496b | 2009-06-08 21:12:48 +0300 | [diff] [blame] | 664 | if (file == NULL) |
| 665 | goto out_failure; |
| 666 | |
| 667 | while (!feof(file)) { |
Paul Mackerras | 9cffa8d | 2009-06-19 22:21:42 +1000 | [diff] [blame] | 668 | u64 start, size; |
Pekka Enberg | 80d496b | 2009-06-08 21:12:48 +0300 | [diff] [blame] | 669 | struct symbol *sym; |
| 670 | int line_len, len; |
| 671 | |
| 672 | line_len = getline(&line, &n, file); |
| 673 | if (line_len < 0) |
| 674 | break; |
| 675 | |
| 676 | if (!line) |
| 677 | goto out_failure; |
| 678 | |
| 679 | line[--line_len] = '\0'; /* \n */ |
| 680 | |
| 681 | len = hex2u64(line, &start); |
| 682 | |
| 683 | len++; |
| 684 | if (len + 2 >= line_len) |
| 685 | continue; |
| 686 | |
| 687 | len += hex2u64(line + len, &size); |
| 688 | |
| 689 | len++; |
| 690 | if (len + 2 >= line_len) |
| 691 | continue; |
| 692 | |
Arnaldo Carvalho de Melo | c408fed | 2010-08-05 12:59:47 -0300 | [diff] [blame] | 693 | sym = symbol__new(start, size, STB_GLOBAL, line + len); |
Pekka Enberg | 80d496b | 2009-06-08 21:12:48 +0300 | [diff] [blame] | 694 | |
| 695 | if (sym == NULL) |
| 696 | goto out_delete_line; |
| 697 | |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 698 | if (filter && filter(map, sym)) |
Arnaldo Carvalho de Melo | 00a192b | 2009-10-30 16:28:24 -0200 | [diff] [blame] | 699 | symbol__delete(sym); |
Pekka Enberg | 80d496b | 2009-06-08 21:12:48 +0300 | [diff] [blame] | 700 | else { |
Arnaldo Carvalho de Melo | 6a4694a | 2009-11-27 16:29:17 -0200 | [diff] [blame] | 701 | symbols__insert(&self->symbols[map->type], sym); |
Pekka Enberg | 80d496b | 2009-06-08 21:12:48 +0300 | [diff] [blame] | 702 | nr_syms++; |
| 703 | } |
| 704 | } |
| 705 | |
| 706 | free(line); |
| 707 | fclose(file); |
| 708 | |
| 709 | return nr_syms; |
| 710 | |
| 711 | out_delete_line: |
| 712 | free(line); |
| 713 | out_failure: |
| 714 | return -1; |
| 715 | } |
| 716 | |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 717 | /** |
| 718 | * elf_symtab__for_each_symbol - iterate thru all the symbols |
| 719 | * |
| 720 | * @self: struct elf_symtab instance to iterate |
Ingo Molnar | 83a0944 | 2009-08-15 12:26:57 +0200 | [diff] [blame] | 721 | * @idx: uint32_t idx |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 722 | * @sym: GElf_Sym iterator |
| 723 | */ |
Ingo Molnar | 83a0944 | 2009-08-15 12:26:57 +0200 | [diff] [blame] | 724 | #define elf_symtab__for_each_symbol(syms, nr_syms, idx, sym) \ |
| 725 | for (idx = 0, gelf_getsym(syms, idx, &sym);\ |
| 726 | idx < nr_syms; \ |
| 727 | idx++, gelf_getsym(syms, idx, &sym)) |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 728 | |
| 729 | static inline uint8_t elf_sym__type(const GElf_Sym *sym) |
| 730 | { |
| 731 | return GELF_ST_TYPE(sym->st_info); |
| 732 | } |
| 733 | |
| 734 | static inline int elf_sym__is_function(const GElf_Sym *sym) |
| 735 | { |
| 736 | return elf_sym__type(sym) == STT_FUNC && |
| 737 | sym->st_name != 0 && |
Arnaldo Carvalho de Melo | 8183313 | 2009-10-05 23:35:03 -0300 | [diff] [blame] | 738 | sym->st_shndx != SHN_UNDEF; |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 739 | } |
| 740 | |
Arnaldo Carvalho de Melo | f1dfa0b | 2009-12-11 14:50:39 -0200 | [diff] [blame] | 741 | static inline bool elf_sym__is_object(const GElf_Sym *sym) |
| 742 | { |
| 743 | return elf_sym__type(sym) == STT_OBJECT && |
| 744 | sym->st_name != 0 && |
| 745 | sym->st_shndx != SHN_UNDEF; |
| 746 | } |
| 747 | |
Mike Galbraith | 6cfcc53 | 2009-07-02 08:08:36 +0200 | [diff] [blame] | 748 | static inline int elf_sym__is_label(const GElf_Sym *sym) |
| 749 | { |
| 750 | return elf_sym__type(sym) == STT_NOTYPE && |
| 751 | sym->st_name != 0 && |
| 752 | sym->st_shndx != SHN_UNDEF && |
| 753 | sym->st_shndx != SHN_ABS; |
| 754 | } |
| 755 | |
| 756 | static inline const char *elf_sec__name(const GElf_Shdr *shdr, |
| 757 | const Elf_Data *secstrs) |
| 758 | { |
| 759 | return secstrs->d_buf + shdr->sh_name; |
| 760 | } |
| 761 | |
| 762 | static inline int elf_sec__is_text(const GElf_Shdr *shdr, |
| 763 | const Elf_Data *secstrs) |
| 764 | { |
| 765 | return strstr(elf_sec__name(shdr, secstrs), "text") != NULL; |
| 766 | } |
| 767 | |
Arnaldo Carvalho de Melo | f1dfa0b | 2009-12-11 14:50:39 -0200 | [diff] [blame] | 768 | static inline bool elf_sec__is_data(const GElf_Shdr *shdr, |
| 769 | const Elf_Data *secstrs) |
| 770 | { |
| 771 | return strstr(elf_sec__name(shdr, secstrs), "data") != NULL; |
| 772 | } |
| 773 | |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 774 | static inline const char *elf_sym__name(const GElf_Sym *sym, |
| 775 | const Elf_Data *symstrs) |
| 776 | { |
| 777 | return symstrs->d_buf + sym->st_name; |
| 778 | } |
| 779 | |
| 780 | static Elf_Scn *elf_section_by_name(Elf *elf, GElf_Ehdr *ep, |
| 781 | GElf_Shdr *shp, const char *name, |
Ingo Molnar | 83a0944 | 2009-08-15 12:26:57 +0200 | [diff] [blame] | 782 | size_t *idx) |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 783 | { |
| 784 | Elf_Scn *sec = NULL; |
| 785 | size_t cnt = 1; |
| 786 | |
| 787 | while ((sec = elf_nextscn(elf, sec)) != NULL) { |
| 788 | char *str; |
| 789 | |
| 790 | gelf_getshdr(sec, shp); |
| 791 | str = elf_strptr(elf, ep->e_shstrndx, shp->sh_name); |
| 792 | if (!strcmp(name, str)) { |
Ingo Molnar | 83a0944 | 2009-08-15 12:26:57 +0200 | [diff] [blame] | 793 | if (idx) |
| 794 | *idx = cnt; |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 795 | break; |
| 796 | } |
| 797 | ++cnt; |
| 798 | } |
| 799 | |
| 800 | return sec; |
| 801 | } |
| 802 | |
Arnaldo Carvalho de Melo | 8ce998d | 2009-06-03 00:54:33 -0300 | [diff] [blame] | 803 | #define elf_section__for_each_rel(reldata, pos, pos_mem, idx, nr_entries) \ |
| 804 | for (idx = 0, pos = gelf_getrel(reldata, 0, &pos_mem); \ |
| 805 | idx < nr_entries; \ |
| 806 | ++idx, pos = gelf_getrel(reldata, idx, &pos_mem)) |
| 807 | |
| 808 | #define elf_section__for_each_rela(reldata, pos, pos_mem, idx, nr_entries) \ |
| 809 | for (idx = 0, pos = gelf_getrela(reldata, 0, &pos_mem); \ |
| 810 | idx < nr_entries; \ |
| 811 | ++idx, pos = gelf_getrela(reldata, idx, &pos_mem)) |
| 812 | |
Arnaldo Carvalho de Melo | a25e46c | 2009-07-11 12:18:36 -0300 | [diff] [blame] | 813 | /* |
| 814 | * We need to check if we have a .dynsym, so that we can handle the |
| 815 | * .plt, synthesizing its symbols, that aren't on the symtabs (be it |
| 816 | * .dynsym or .symtab). |
| 817 | * And always look at the original dso, not at debuginfo packages, that |
| 818 | * have the PLT data stripped out (shdr_rel_plt.sh_type == SHT_NOBITS). |
| 819 | */ |
Arnaldo Carvalho de Melo | 8216416 | 2009-11-16 13:48:11 -0200 | [diff] [blame] | 820 | static int dso__synthesize_plt_symbols(struct dso *self, struct map *map, |
| 821 | symbol_filter_t filter) |
Arnaldo Carvalho de Melo | 8ce998d | 2009-06-03 00:54:33 -0300 | [diff] [blame] | 822 | { |
| 823 | uint32_t nr_rel_entries, idx; |
| 824 | GElf_Sym sym; |
Paul Mackerras | 9cffa8d | 2009-06-19 22:21:42 +1000 | [diff] [blame] | 825 | u64 plt_offset; |
Arnaldo Carvalho de Melo | 8ce998d | 2009-06-03 00:54:33 -0300 | [diff] [blame] | 826 | GElf_Shdr shdr_plt; |
| 827 | struct symbol *f; |
Arnaldo Carvalho de Melo | a25e46c | 2009-07-11 12:18:36 -0300 | [diff] [blame] | 828 | GElf_Shdr shdr_rel_plt, shdr_dynsym; |
Arnaldo Carvalho de Melo | 8ce998d | 2009-06-03 00:54:33 -0300 | [diff] [blame] | 829 | Elf_Data *reldata, *syms, *symstrs; |
Arnaldo Carvalho de Melo | a25e46c | 2009-07-11 12:18:36 -0300 | [diff] [blame] | 830 | Elf_Scn *scn_plt_rel, *scn_symstrs, *scn_dynsym; |
| 831 | size_t dynsym_idx; |
| 832 | GElf_Ehdr ehdr; |
Arnaldo Carvalho de Melo | 8ce998d | 2009-06-03 00:54:33 -0300 | [diff] [blame] | 833 | char sympltname[1024]; |
Arnaldo Carvalho de Melo | a25e46c | 2009-07-11 12:18:36 -0300 | [diff] [blame] | 834 | Elf *elf; |
| 835 | int nr = 0, symidx, fd, err = 0; |
Arnaldo Carvalho de Melo | 8ce998d | 2009-06-03 00:54:33 -0300 | [diff] [blame] | 836 | |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 837 | fd = open(self->long_name, O_RDONLY); |
Arnaldo Carvalho de Melo | a25e46c | 2009-07-11 12:18:36 -0300 | [diff] [blame] | 838 | if (fd < 0) |
| 839 | goto out; |
| 840 | |
Marti Raudsepp | 8408712 | 2009-10-24 19:10:36 +0300 | [diff] [blame] | 841 | elf = elf_begin(fd, PERF_ELF_C_READ_MMAP, NULL); |
Arnaldo Carvalho de Melo | a25e46c | 2009-07-11 12:18:36 -0300 | [diff] [blame] | 842 | if (elf == NULL) |
| 843 | goto out_close; |
| 844 | |
| 845 | if (gelf_getehdr(elf, &ehdr) == NULL) |
| 846 | goto out_elf_end; |
| 847 | |
| 848 | scn_dynsym = elf_section_by_name(elf, &ehdr, &shdr_dynsym, |
| 849 | ".dynsym", &dynsym_idx); |
| 850 | if (scn_dynsym == NULL) |
| 851 | goto out_elf_end; |
| 852 | |
| 853 | 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] | 854 | ".rela.plt", NULL); |
| 855 | if (scn_plt_rel == NULL) { |
Arnaldo Carvalho de Melo | a25e46c | 2009-07-11 12:18:36 -0300 | [diff] [blame] | 856 | 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] | 857 | ".rel.plt", NULL); |
| 858 | if (scn_plt_rel == NULL) |
Arnaldo Carvalho de Melo | a25e46c | 2009-07-11 12:18:36 -0300 | [diff] [blame] | 859 | goto out_elf_end; |
Arnaldo Carvalho de Melo | 8ce998d | 2009-06-03 00:54:33 -0300 | [diff] [blame] | 860 | } |
| 861 | |
Arnaldo Carvalho de Melo | a25e46c | 2009-07-11 12:18:36 -0300 | [diff] [blame] | 862 | err = -1; |
Arnaldo Carvalho de Melo | 8ce998d | 2009-06-03 00:54:33 -0300 | [diff] [blame] | 863 | |
Arnaldo Carvalho de Melo | a25e46c | 2009-07-11 12:18:36 -0300 | [diff] [blame] | 864 | if (shdr_rel_plt.sh_link != dynsym_idx) |
| 865 | goto out_elf_end; |
| 866 | |
| 867 | if (elf_section_by_name(elf, &ehdr, &shdr_plt, ".plt", NULL) == NULL) |
| 868 | goto out_elf_end; |
Arnaldo Carvalho de Melo | 8ce998d | 2009-06-03 00:54:33 -0300 | [diff] [blame] | 869 | |
| 870 | /* |
Ingo Molnar | 83a0944 | 2009-08-15 12:26:57 +0200 | [diff] [blame] | 871 | * 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] | 872 | * and the symbols in the .dynsym they refer to. |
| 873 | */ |
| 874 | reldata = elf_getdata(scn_plt_rel, NULL); |
| 875 | if (reldata == NULL) |
Arnaldo Carvalho de Melo | a25e46c | 2009-07-11 12:18:36 -0300 | [diff] [blame] | 876 | goto out_elf_end; |
Arnaldo Carvalho de Melo | 8ce998d | 2009-06-03 00:54:33 -0300 | [diff] [blame] | 877 | |
| 878 | syms = elf_getdata(scn_dynsym, NULL); |
| 879 | if (syms == NULL) |
Arnaldo Carvalho de Melo | a25e46c | 2009-07-11 12:18:36 -0300 | [diff] [blame] | 880 | goto out_elf_end; |
Arnaldo Carvalho de Melo | 8ce998d | 2009-06-03 00:54:33 -0300 | [diff] [blame] | 881 | |
Arnaldo Carvalho de Melo | a25e46c | 2009-07-11 12:18:36 -0300 | [diff] [blame] | 882 | scn_symstrs = elf_getscn(elf, shdr_dynsym.sh_link); |
Arnaldo Carvalho de Melo | 8ce998d | 2009-06-03 00:54:33 -0300 | [diff] [blame] | 883 | if (scn_symstrs == NULL) |
Arnaldo Carvalho de Melo | a25e46c | 2009-07-11 12:18:36 -0300 | [diff] [blame] | 884 | goto out_elf_end; |
Arnaldo Carvalho de Melo | 8ce998d | 2009-06-03 00:54:33 -0300 | [diff] [blame] | 885 | |
| 886 | symstrs = elf_getdata(scn_symstrs, NULL); |
| 887 | if (symstrs == NULL) |
Arnaldo Carvalho de Melo | a25e46c | 2009-07-11 12:18:36 -0300 | [diff] [blame] | 888 | goto out_elf_end; |
Arnaldo Carvalho de Melo | 8ce998d | 2009-06-03 00:54:33 -0300 | [diff] [blame] | 889 | |
| 890 | nr_rel_entries = shdr_rel_plt.sh_size / shdr_rel_plt.sh_entsize; |
| 891 | plt_offset = shdr_plt.sh_offset; |
| 892 | |
| 893 | if (shdr_rel_plt.sh_type == SHT_RELA) { |
| 894 | GElf_Rela pos_mem, *pos; |
| 895 | |
| 896 | elf_section__for_each_rela(reldata, pos, pos_mem, idx, |
| 897 | nr_rel_entries) { |
| 898 | symidx = GELF_R_SYM(pos->r_info); |
| 899 | plt_offset += shdr_plt.sh_entsize; |
| 900 | gelf_getsym(syms, symidx, &sym); |
| 901 | snprintf(sympltname, sizeof(sympltname), |
| 902 | "%s@plt", elf_sym__name(&sym, symstrs)); |
| 903 | |
| 904 | f = symbol__new(plt_offset, shdr_plt.sh_entsize, |
Arnaldo Carvalho de Melo | c408fed | 2010-08-05 12:59:47 -0300 | [diff] [blame] | 905 | STB_GLOBAL, sympltname); |
Arnaldo Carvalho de Melo | 8ce998d | 2009-06-03 00:54:33 -0300 | [diff] [blame] | 906 | if (!f) |
Arnaldo Carvalho de Melo | a25e46c | 2009-07-11 12:18:36 -0300 | [diff] [blame] | 907 | goto out_elf_end; |
Arnaldo Carvalho de Melo | 8ce998d | 2009-06-03 00:54:33 -0300 | [diff] [blame] | 908 | |
Arnaldo Carvalho de Melo | 8216416 | 2009-11-16 13:48:11 -0200 | [diff] [blame] | 909 | if (filter && filter(map, f)) |
| 910 | symbol__delete(f); |
| 911 | else { |
Arnaldo Carvalho de Melo | 6a4694a | 2009-11-27 16:29:17 -0200 | [diff] [blame] | 912 | symbols__insert(&self->symbols[map->type], f); |
Arnaldo Carvalho de Melo | 8216416 | 2009-11-16 13:48:11 -0200 | [diff] [blame] | 913 | ++nr; |
| 914 | } |
Arnaldo Carvalho de Melo | 8ce998d | 2009-06-03 00:54:33 -0300 | [diff] [blame] | 915 | } |
| 916 | } else if (shdr_rel_plt.sh_type == SHT_REL) { |
| 917 | GElf_Rel pos_mem, *pos; |
| 918 | elf_section__for_each_rel(reldata, pos, pos_mem, idx, |
| 919 | nr_rel_entries) { |
| 920 | symidx = GELF_R_SYM(pos->r_info); |
| 921 | plt_offset += shdr_plt.sh_entsize; |
| 922 | gelf_getsym(syms, symidx, &sym); |
| 923 | snprintf(sympltname, sizeof(sympltname), |
| 924 | "%s@plt", elf_sym__name(&sym, symstrs)); |
| 925 | |
| 926 | f = symbol__new(plt_offset, shdr_plt.sh_entsize, |
Arnaldo Carvalho de Melo | c408fed | 2010-08-05 12:59:47 -0300 | [diff] [blame] | 927 | STB_GLOBAL, sympltname); |
Arnaldo Carvalho de Melo | 8ce998d | 2009-06-03 00:54:33 -0300 | [diff] [blame] | 928 | if (!f) |
Arnaldo Carvalho de Melo | a25e46c | 2009-07-11 12:18:36 -0300 | [diff] [blame] | 929 | goto out_elf_end; |
Arnaldo Carvalho de Melo | 8ce998d | 2009-06-03 00:54:33 -0300 | [diff] [blame] | 930 | |
Arnaldo Carvalho de Melo | 8216416 | 2009-11-16 13:48:11 -0200 | [diff] [blame] | 931 | if (filter && filter(map, f)) |
| 932 | symbol__delete(f); |
| 933 | else { |
Arnaldo Carvalho de Melo | 6a4694a | 2009-11-27 16:29:17 -0200 | [diff] [blame] | 934 | symbols__insert(&self->symbols[map->type], f); |
Arnaldo Carvalho de Melo | 8216416 | 2009-11-16 13:48:11 -0200 | [diff] [blame] | 935 | ++nr; |
| 936 | } |
Arnaldo Carvalho de Melo | 8ce998d | 2009-06-03 00:54:33 -0300 | [diff] [blame] | 937 | } |
Arnaldo Carvalho de Melo | 8ce998d | 2009-06-03 00:54:33 -0300 | [diff] [blame] | 938 | } |
| 939 | |
Arnaldo Carvalho de Melo | a25e46c | 2009-07-11 12:18:36 -0300 | [diff] [blame] | 940 | err = 0; |
| 941 | out_elf_end: |
| 942 | elf_end(elf); |
| 943 | out_close: |
| 944 | close(fd); |
| 945 | |
| 946 | if (err == 0) |
| 947 | return nr; |
| 948 | out: |
Arnaldo Carvalho de Melo | fe2197b | 2010-03-11 20:12:40 -0300 | [diff] [blame] | 949 | pr_debug("%s: problems reading %s PLT info.\n", |
| 950 | __func__, self->long_name); |
Arnaldo Carvalho de Melo | a25e46c | 2009-07-11 12:18:36 -0300 | [diff] [blame] | 951 | return 0; |
Arnaldo Carvalho de Melo | 8ce998d | 2009-06-03 00:54:33 -0300 | [diff] [blame] | 952 | } |
| 953 | |
Arnaldo Carvalho de Melo | d45868d | 2009-12-11 14:50:38 -0200 | [diff] [blame] | 954 | static bool elf_sym__is_a(GElf_Sym *self, enum map_type type) |
| 955 | { |
| 956 | switch (type) { |
| 957 | case MAP__FUNCTION: |
| 958 | return elf_sym__is_function(self); |
Arnaldo Carvalho de Melo | f1dfa0b | 2009-12-11 14:50:39 -0200 | [diff] [blame] | 959 | case MAP__VARIABLE: |
| 960 | return elf_sym__is_object(self); |
Arnaldo Carvalho de Melo | d45868d | 2009-12-11 14:50:38 -0200 | [diff] [blame] | 961 | default: |
| 962 | return false; |
| 963 | } |
| 964 | } |
| 965 | |
| 966 | static bool elf_sec__is_a(GElf_Shdr *self, Elf_Data *secstrs, enum map_type type) |
| 967 | { |
| 968 | switch (type) { |
| 969 | case MAP__FUNCTION: |
| 970 | return elf_sec__is_text(self, secstrs); |
Arnaldo Carvalho de Melo | f1dfa0b | 2009-12-11 14:50:39 -0200 | [diff] [blame] | 971 | case MAP__VARIABLE: |
| 972 | return elf_sec__is_data(self, secstrs); |
Arnaldo Carvalho de Melo | d45868d | 2009-12-11 14:50:38 -0200 | [diff] [blame] | 973 | default: |
| 974 | return false; |
| 975 | } |
| 976 | } |
| 977 | |
Eric B Munson | 70c3856 | 2010-06-14 14:56:33 +0100 | [diff] [blame] | 978 | static size_t elf_addr_to_index(Elf *elf, GElf_Addr addr) |
| 979 | { |
| 980 | Elf_Scn *sec = NULL; |
| 981 | GElf_Shdr shdr; |
| 982 | size_t cnt = 1; |
| 983 | |
| 984 | while ((sec = elf_nextscn(elf, sec)) != NULL) { |
| 985 | gelf_getshdr(sec, &shdr); |
| 986 | |
| 987 | if ((addr >= shdr.sh_addr) && |
| 988 | (addr < (shdr.sh_addr + shdr.sh_size))) |
| 989 | return cnt; |
| 990 | |
| 991 | ++cnt; |
| 992 | } |
| 993 | |
| 994 | return -1; |
| 995 | } |
| 996 | |
Arnaldo Carvalho de Melo | 9de89fe | 2010-02-03 16:52:00 -0200 | [diff] [blame] | 997 | static int dso__load_sym(struct dso *self, struct map *map, const char *name, |
Dave Martin | 6da80ce | 2010-07-30 09:50:09 -0300 | [diff] [blame] | 998 | int fd, symbol_filter_t filter, int kmodule, |
| 999 | int want_symtab) |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 1000 | { |
Arnaldo Carvalho de Melo | 9de89fe | 2010-02-03 16:52:00 -0200 | [diff] [blame] | 1001 | struct kmap *kmap = self->kernel ? map__kmap(map) : NULL; |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 1002 | struct map *curr_map = map; |
| 1003 | struct dso *curr_dso = self; |
Mike Galbraith | 6cfcc53 | 2009-07-02 08:08:36 +0200 | [diff] [blame] | 1004 | Elf_Data *symstrs, *secstrs; |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 1005 | uint32_t nr_syms; |
| 1006 | int err = -1; |
Ingo Molnar | 83a0944 | 2009-08-15 12:26:57 +0200 | [diff] [blame] | 1007 | uint32_t idx; |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 1008 | GElf_Ehdr ehdr; |
Eric B Munson | 70c3856 | 2010-06-14 14:56:33 +0100 | [diff] [blame] | 1009 | GElf_Shdr shdr, opdshdr; |
| 1010 | Elf_Data *syms, *opddata = NULL; |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 1011 | GElf_Sym sym; |
Eric B Munson | 70c3856 | 2010-06-14 14:56:33 +0100 | [diff] [blame] | 1012 | Elf_Scn *sec, *sec_strndx, *opdsec; |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 1013 | Elf *elf; |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1014 | int nr = 0; |
Eric B Munson | 70c3856 | 2010-06-14 14:56:33 +0100 | [diff] [blame] | 1015 | size_t opdidx = 0; |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 1016 | |
Marti Raudsepp | 8408712 | 2009-10-24 19:10:36 +0300 | [diff] [blame] | 1017 | elf = elf_begin(fd, PERF_ELF_C_READ_MMAP, NULL); |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 1018 | if (elf == NULL) { |
Dave Martin | 8b1389e | 2010-07-30 09:36:08 -0300 | [diff] [blame] | 1019 | 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] | 1020 | goto out_close; |
| 1021 | } |
| 1022 | |
| 1023 | if (gelf_getehdr(elf, &ehdr) == NULL) { |
Dave Martin | 8b1389e | 2010-07-30 09:36:08 -0300 | [diff] [blame] | 1024 | pr_debug("%s: cannot get elf header.\n", __func__); |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 1025 | goto out_elf_end; |
| 1026 | } |
| 1027 | |
Dave Martin | 6da80ce | 2010-07-30 09:50:09 -0300 | [diff] [blame] | 1028 | /* Always reject images with a mismatched build-id: */ |
Dave Martin | 21916c3 | 2010-07-30 09:08:08 -0300 | [diff] [blame] | 1029 | if (self->has_build_id) { |
| 1030 | u8 build_id[BUILD_ID_SIZE]; |
| 1031 | |
| 1032 | if (elf_read_build_id(elf, build_id, |
| 1033 | BUILD_ID_SIZE) != BUILD_ID_SIZE) |
| 1034 | goto out_elf_end; |
| 1035 | |
| 1036 | if (!dso__build_id_equal(self, build_id)) |
| 1037 | goto out_elf_end; |
| 1038 | } |
| 1039 | |
Arnaldo Carvalho de Melo | 8ce998d | 2009-06-03 00:54:33 -0300 | [diff] [blame] | 1040 | sec = elf_section_by_name(elf, &ehdr, &shdr, ".symtab", NULL); |
| 1041 | if (sec == NULL) { |
Dave Martin | 6da80ce | 2010-07-30 09:50:09 -0300 | [diff] [blame] | 1042 | if (want_symtab) |
| 1043 | goto out_elf_end; |
| 1044 | |
Arnaldo Carvalho de Melo | a25e46c | 2009-07-11 12:18:36 -0300 | [diff] [blame] | 1045 | sec = elf_section_by_name(elf, &ehdr, &shdr, ".dynsym", NULL); |
| 1046 | if (sec == NULL) |
Arnaldo Carvalho de Melo | 8ce998d | 2009-06-03 00:54:33 -0300 | [diff] [blame] | 1047 | goto out_elf_end; |
Arnaldo Carvalho de Melo | 8ce998d | 2009-06-03 00:54:33 -0300 | [diff] [blame] | 1048 | } |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 1049 | |
Eric B Munson | 70c3856 | 2010-06-14 14:56:33 +0100 | [diff] [blame] | 1050 | opdsec = elf_section_by_name(elf, &ehdr, &opdshdr, ".opd", &opdidx); |
| 1051 | if (opdsec) |
| 1052 | opddata = elf_rawdata(opdsec, NULL); |
| 1053 | |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 1054 | syms = elf_getdata(sec, NULL); |
| 1055 | if (syms == NULL) |
| 1056 | goto out_elf_end; |
| 1057 | |
| 1058 | sec = elf_getscn(elf, shdr.sh_link); |
| 1059 | if (sec == NULL) |
| 1060 | goto out_elf_end; |
| 1061 | |
| 1062 | symstrs = elf_getdata(sec, NULL); |
| 1063 | if (symstrs == NULL) |
| 1064 | goto out_elf_end; |
| 1065 | |
Mike Galbraith | 6cfcc53 | 2009-07-02 08:08:36 +0200 | [diff] [blame] | 1066 | sec_strndx = elf_getscn(elf, ehdr.e_shstrndx); |
| 1067 | if (sec_strndx == NULL) |
| 1068 | goto out_elf_end; |
| 1069 | |
| 1070 | secstrs = elf_getdata(sec_strndx, NULL); |
Stoyan Gaydarov | 9b30a26 | 2009-07-30 05:25:29 -0500 | [diff] [blame] | 1071 | if (secstrs == NULL) |
Mike Galbraith | 6cfcc53 | 2009-07-02 08:08:36 +0200 | [diff] [blame] | 1072 | goto out_elf_end; |
| 1073 | |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 1074 | nr_syms = shdr.sh_size / shdr.sh_entsize; |
| 1075 | |
Arjan van de Ven | e9fbc9d | 2009-06-06 21:22:33 +0200 | [diff] [blame] | 1076 | memset(&sym, 0, sizeof(sym)); |
Zhang, Yanmin | a1645ce | 2010-04-19 13:32:50 +0800 | [diff] [blame] | 1077 | if (self->kernel == DSO_TYPE_USER) { |
Mike Galbraith | d20ff6b | 2009-07-20 14:01:38 +0200 | [diff] [blame] | 1078 | self->adjust_symbols = (ehdr.e_type == ET_EXEC || |
Arnaldo Carvalho de Melo | 30d7a77 | 2009-07-02 21:24:14 -0300 | [diff] [blame] | 1079 | elf_section_by_name(elf, &ehdr, &shdr, |
| 1080 | ".gnu.prelink_undo", |
| 1081 | NULL) != NULL); |
Mike Galbraith | d20ff6b | 2009-07-20 14:01:38 +0200 | [diff] [blame] | 1082 | } else self->adjust_symbols = 0; |
| 1083 | |
Ingo Molnar | 83a0944 | 2009-08-15 12:26:57 +0200 | [diff] [blame] | 1084 | elf_symtab__for_each_symbol(syms, nr_syms, idx, sym) { |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 1085 | struct symbol *f; |
Arnaldo Carvalho de Melo | 56b03f3 | 2010-01-05 16:50:31 -0200 | [diff] [blame] | 1086 | const char *elf_name = elf_sym__name(&sym, symstrs); |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 1087 | char *demangled = NULL; |
Mike Galbraith | 6cfcc53 | 2009-07-02 08:08:36 +0200 | [diff] [blame] | 1088 | int is_label = elf_sym__is_label(&sym); |
| 1089 | const char *section_name; |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 1090 | |
Arnaldo Carvalho de Melo | 9de89fe | 2010-02-03 16:52:00 -0200 | [diff] [blame] | 1091 | if (kmap && kmap->ref_reloc_sym && kmap->ref_reloc_sym->name && |
| 1092 | strcmp(elf_name, kmap->ref_reloc_sym->name) == 0) |
| 1093 | kmap->ref_reloc_sym->unrelocated_addr = sym.st_value; |
Arnaldo Carvalho de Melo | 56b03f3 | 2010-01-05 16:50:31 -0200 | [diff] [blame] | 1094 | |
Arnaldo Carvalho de Melo | d45868d | 2009-12-11 14:50:38 -0200 | [diff] [blame] | 1095 | if (!is_label && !elf_sym__is_a(&sym, map->type)) |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 1096 | continue; |
| 1097 | |
Dave Martin | 696b97a | 2010-08-09 12:21:18 +0100 | [diff] [blame] | 1098 | /* Reject ARM ELF "mapping symbols": these aren't unique and |
| 1099 | * don't identify functions, so will confuse the profile |
| 1100 | * output: */ |
| 1101 | if (ehdr.e_machine == EM_ARM) { |
| 1102 | if (!strcmp(elf_name, "$a") || |
| 1103 | !strcmp(elf_name, "$d") || |
| 1104 | !strcmp(elf_name, "$t")) |
| 1105 | continue; |
| 1106 | } |
| 1107 | |
Eric B Munson | 70c3856 | 2010-06-14 14:56:33 +0100 | [diff] [blame] | 1108 | if (opdsec && sym.st_shndx == opdidx) { |
| 1109 | u32 offset = sym.st_value - opdshdr.sh_addr; |
| 1110 | u64 *opd = opddata->d_buf + offset; |
| 1111 | sym.st_value = *opd; |
| 1112 | sym.st_shndx = elf_addr_to_index(elf, sym.st_value); |
| 1113 | } |
| 1114 | |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 1115 | sec = elf_getscn(elf, sym.st_shndx); |
| 1116 | if (!sec) |
| 1117 | goto out_elf_end; |
| 1118 | |
| 1119 | gelf_getshdr(sec, &shdr); |
Mike Galbraith | 6cfcc53 | 2009-07-02 08:08:36 +0200 | [diff] [blame] | 1120 | |
Arnaldo Carvalho de Melo | d45868d | 2009-12-11 14:50:38 -0200 | [diff] [blame] | 1121 | if (is_label && !elf_sec__is_a(&shdr, secstrs, map->type)) |
Mike Galbraith | 6cfcc53 | 2009-07-02 08:08:36 +0200 | [diff] [blame] | 1122 | continue; |
| 1123 | |
| 1124 | section_name = elf_sec__name(&shdr, secstrs); |
Ingo Molnar | 0b73da3 | 2009-06-06 15:48:52 +0200 | [diff] [blame] | 1125 | |
Zhang, Yanmin | a1645ce | 2010-04-19 13:32:50 +0800 | [diff] [blame] | 1126 | if (self->kernel != DSO_TYPE_USER || kmodule) { |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 1127 | char dso_name[PATH_MAX]; |
| 1128 | |
| 1129 | if (strcmp(section_name, |
Arnaldo Carvalho de Melo | b63be8d | 2010-03-15 15:03:50 -0300 | [diff] [blame] | 1130 | (curr_dso->short_name + |
| 1131 | self->short_name_len)) == 0) |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 1132 | goto new_symbol; |
| 1133 | |
| 1134 | if (strcmp(section_name, ".text") == 0) { |
| 1135 | curr_map = map; |
| 1136 | curr_dso = self; |
| 1137 | goto new_symbol; |
| 1138 | } |
| 1139 | |
| 1140 | snprintf(dso_name, sizeof(dso_name), |
| 1141 | "%s%s", self->short_name, section_name); |
| 1142 | |
Arnaldo Carvalho de Melo | 9de89fe | 2010-02-03 16:52:00 -0200 | [diff] [blame] | 1143 | 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] | 1144 | if (curr_map == NULL) { |
| 1145 | u64 start = sym.st_value; |
| 1146 | |
| 1147 | if (kmodule) |
| 1148 | start += map->start + shdr.sh_offset; |
| 1149 | |
Arnaldo Carvalho de Melo | 00a192b | 2009-10-30 16:28:24 -0200 | [diff] [blame] | 1150 | curr_dso = dso__new(dso_name); |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 1151 | if (curr_dso == NULL) |
| 1152 | goto out_elf_end; |
Zhang, Yanmin | a1645ce | 2010-04-19 13:32:50 +0800 | [diff] [blame] | 1153 | curr_dso->kernel = self->kernel; |
Arnaldo Carvalho de Melo | 3610583 | 2009-11-27 16:29:16 -0200 | [diff] [blame] | 1154 | curr_map = map__new2(start, curr_dso, |
Arnaldo Carvalho de Melo | 6275ce2 | 2010-02-03 16:52:01 -0200 | [diff] [blame] | 1155 | map->type); |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 1156 | if (curr_map == NULL) { |
| 1157 | dso__delete(curr_dso); |
| 1158 | goto out_elf_end; |
| 1159 | } |
Arnaldo Carvalho de Melo | ed52ce2 | 2009-10-19 17:17:57 -0200 | [diff] [blame] | 1160 | curr_map->map_ip = identity__map_ip; |
| 1161 | curr_map->unmap_ip = identity__map_ip; |
Arnaldo Carvalho de Melo | b0a9ab6 | 2010-03-15 11:46:58 -0300 | [diff] [blame] | 1162 | curr_dso->origin = self->origin; |
Arnaldo Carvalho de Melo | 9de89fe | 2010-02-03 16:52:00 -0200 | [diff] [blame] | 1163 | map_groups__insert(kmap->kmaps, curr_map); |
Zhang, Yanmin | a1645ce | 2010-04-19 13:32:50 +0800 | [diff] [blame] | 1164 | dsos__add(&self->node, curr_dso); |
Arnaldo Carvalho de Melo | 6275ce2 | 2010-02-03 16:52:01 -0200 | [diff] [blame] | 1165 | dso__set_loaded(curr_dso, map->type); |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 1166 | } else |
| 1167 | curr_dso = curr_map->dso; |
| 1168 | |
| 1169 | goto new_symbol; |
Arnaldo Carvalho de Melo | af427bf | 2009-10-05 14:26:17 -0300 | [diff] [blame] | 1170 | } |
| 1171 | |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 1172 | if (curr_dso->adjust_symbols) { |
Arnaldo Carvalho de Melo | 29a9f66 | 2010-02-03 16:52:06 -0200 | [diff] [blame] | 1173 | pr_debug4("%s: adjusting symbol: st_value: %#Lx " |
| 1174 | "sh_addr: %#Lx sh_offset: %#Lx\n", __func__, |
| 1175 | (u64)sym.st_value, (u64)shdr.sh_addr, |
| 1176 | (u64)shdr.sh_offset); |
Arnaldo Carvalho de Melo | f5812a7 | 2009-06-30 11:43:17 -0300 | [diff] [blame] | 1177 | sym.st_value -= shdr.sh_addr - shdr.sh_offset; |
Arnaldo Carvalho de Melo | af427bf | 2009-10-05 14:26:17 -0300 | [diff] [blame] | 1178 | } |
Arnaldo Carvalho de Melo | 28ac909 | 2009-07-20 14:14:12 -0300 | [diff] [blame] | 1179 | /* |
| 1180 | * We need to figure out if the object was created from C++ sources |
| 1181 | * DWARF DW_compile_unit has this, but we don't always have access |
| 1182 | * to it... |
| 1183 | */ |
Ingo Molnar | 83a0944 | 2009-08-15 12:26:57 +0200 | [diff] [blame] | 1184 | demangled = bfd_demangle(NULL, elf_name, DMGL_PARAMS | DMGL_ANSI); |
Arnaldo Carvalho de Melo | 28ac909 | 2009-07-20 14:14:12 -0300 | [diff] [blame] | 1185 | if (demangled != NULL) |
Ingo Molnar | 83a0944 | 2009-08-15 12:26:57 +0200 | [diff] [blame] | 1186 | elf_name = demangled; |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 1187 | new_symbol: |
Arnaldo Carvalho de Melo | c408fed | 2010-08-05 12:59:47 -0300 | [diff] [blame] | 1188 | f = symbol__new(sym.st_value, sym.st_size, |
| 1189 | GELF_ST_BIND(sym.st_info), elf_name); |
Arnaldo Carvalho de Melo | 28ac909 | 2009-07-20 14:14:12 -0300 | [diff] [blame] | 1190 | free(demangled); |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 1191 | if (!f) |
| 1192 | goto out_elf_end; |
| 1193 | |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 1194 | if (filter && filter(curr_map, f)) |
Arnaldo Carvalho de Melo | 00a192b | 2009-10-30 16:28:24 -0200 | [diff] [blame] | 1195 | symbol__delete(f); |
Arnaldo Carvalho de Melo | 69ee69f | 2009-05-28 14:55:26 -0300 | [diff] [blame] | 1196 | else { |
Arnaldo Carvalho de Melo | 6a4694a | 2009-11-27 16:29:17 -0200 | [diff] [blame] | 1197 | symbols__insert(&curr_dso->symbols[curr_map->type], f); |
Arnaldo Carvalho de Melo | 69ee69f | 2009-05-28 14:55:26 -0300 | [diff] [blame] | 1198 | nr++; |
| 1199 | } |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 1200 | } |
| 1201 | |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 1202 | /* |
| 1203 | * For misannotated, zeroed, ASM function sizes. |
| 1204 | */ |
Arnaldo Carvalho de Melo | 6275ce2 | 2010-02-03 16:52:01 -0200 | [diff] [blame] | 1205 | if (nr > 0) { |
Arnaldo Carvalho de Melo | 6a4694a | 2009-11-27 16:29:17 -0200 | [diff] [blame] | 1206 | symbols__fixup_end(&self->symbols[map->type]); |
Arnaldo Carvalho de Melo | 6275ce2 | 2010-02-03 16:52:01 -0200 | [diff] [blame] | 1207 | if (kmap) { |
| 1208 | /* |
| 1209 | * We need to fixup this here too because we create new |
| 1210 | * maps here, for things like vsyscall sections. |
| 1211 | */ |
| 1212 | __map_groups__fixup_end(kmap->kmaps, map->type); |
| 1213 | } |
| 1214 | } |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 1215 | err = nr; |
| 1216 | out_elf_end: |
| 1217 | elf_end(elf); |
| 1218 | out_close: |
| 1219 | return err; |
| 1220 | } |
| 1221 | |
Arnaldo Carvalho de Melo | 78075ca | 2009-11-20 20:51:26 -0200 | [diff] [blame] | 1222 | static bool dso__build_id_equal(const struct dso *self, u8 *build_id) |
| 1223 | { |
| 1224 | return memcmp(self->build_id, build_id, sizeof(self->build_id)) == 0; |
| 1225 | } |
| 1226 | |
Zhang, Yanmin | a1645ce | 2010-04-19 13:32:50 +0800 | [diff] [blame] | 1227 | bool __dsos__read_build_ids(struct list_head *head, bool with_hits) |
Frederic Weisbecker | 57f395a | 2009-11-11 04:51:04 +0100 | [diff] [blame] | 1228 | { |
Arnaldo Carvalho de Melo | e30a3d1 | 2009-11-18 20:20:51 -0200 | [diff] [blame] | 1229 | bool have_build_id = false; |
Frederic Weisbecker | 57f395a | 2009-11-11 04:51:04 +0100 | [diff] [blame] | 1230 | struct dso *pos; |
| 1231 | |
Arnaldo Carvalho de Melo | 6122e4e | 2010-02-03 16:52:05 -0200 | [diff] [blame] | 1232 | list_for_each_entry(pos, head, node) { |
| 1233 | if (with_hits && !pos->hit) |
| 1234 | continue; |
Arnaldo Carvalho de Melo | f6e1467 | 2010-05-19 11:13:02 -0300 | [diff] [blame] | 1235 | if (pos->has_build_id) { |
| 1236 | have_build_id = true; |
| 1237 | continue; |
| 1238 | } |
Arnaldo Carvalho de Melo | e30a3d1 | 2009-11-18 20:20:51 -0200 | [diff] [blame] | 1239 | if (filename__read_build_id(pos->long_name, pos->build_id, |
| 1240 | sizeof(pos->build_id)) > 0) { |
| 1241 | have_build_id = true; |
| 1242 | pos->has_build_id = true; |
| 1243 | } |
Arnaldo Carvalho de Melo | 6122e4e | 2010-02-03 16:52:05 -0200 | [diff] [blame] | 1244 | } |
Frederic Weisbecker | 57f395a | 2009-11-11 04:51:04 +0100 | [diff] [blame] | 1245 | |
Arnaldo Carvalho de Melo | e30a3d1 | 2009-11-18 20:20:51 -0200 | [diff] [blame] | 1246 | return have_build_id; |
Frederic Weisbecker | 57f395a | 2009-11-11 04:51:04 +0100 | [diff] [blame] | 1247 | } |
| 1248 | |
Arnaldo Carvalho de Melo | fd7a346 | 2009-11-20 20:51:25 -0200 | [diff] [blame] | 1249 | /* |
| 1250 | * Align offset to 4 bytes as needed for note name and descriptor data. |
| 1251 | */ |
| 1252 | #define NOTE_ALIGN(n) (((n) + 3) & -4U) |
| 1253 | |
Dave Martin | 21916c3 | 2010-07-30 09:08:08 -0300 | [diff] [blame] | 1254 | 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] | 1255 | { |
Dave Martin | 21916c3 | 2010-07-30 09:08:08 -0300 | [diff] [blame] | 1256 | int err = -1; |
Arnaldo Carvalho de Melo | 4d1e00a | 2009-08-05 19:02:49 -0300 | [diff] [blame] | 1257 | GElf_Ehdr ehdr; |
| 1258 | GElf_Shdr shdr; |
Arnaldo Carvalho de Melo | fd7a346 | 2009-11-20 20:51:25 -0200 | [diff] [blame] | 1259 | Elf_Data *data; |
Arnaldo Carvalho de Melo | 4d1e00a | 2009-08-05 19:02:49 -0300 | [diff] [blame] | 1260 | Elf_Scn *sec; |
Pekka Enberg | e57cfcd | 2009-11-22 12:29:44 +0200 | [diff] [blame] | 1261 | Elf_Kind ek; |
Arnaldo Carvalho de Melo | fd7a346 | 2009-11-20 20:51:25 -0200 | [diff] [blame] | 1262 | void *ptr; |
Arnaldo Carvalho de Melo | 4d1e00a | 2009-08-05 19:02:49 -0300 | [diff] [blame] | 1263 | |
Arnaldo Carvalho de Melo | 2643ce1 | 2009-11-03 21:46:10 -0200 | [diff] [blame] | 1264 | if (size < BUILD_ID_SIZE) |
| 1265 | goto out; |
| 1266 | |
Pekka Enberg | e57cfcd | 2009-11-22 12:29:44 +0200 | [diff] [blame] | 1267 | ek = elf_kind(elf); |
| 1268 | if (ek != ELF_K_ELF) |
Dave Martin | 21916c3 | 2010-07-30 09:08:08 -0300 | [diff] [blame] | 1269 | goto out; |
Pekka Enberg | e57cfcd | 2009-11-22 12:29:44 +0200 | [diff] [blame] | 1270 | |
Arnaldo Carvalho de Melo | 4d1e00a | 2009-08-05 19:02:49 -0300 | [diff] [blame] | 1271 | if (gelf_getehdr(elf, &ehdr) == NULL) { |
Arnaldo Carvalho de Melo | 6beba7a | 2009-10-21 17:34:06 -0200 | [diff] [blame] | 1272 | pr_err("%s: cannot get elf header.\n", __func__); |
Dave Martin | 21916c3 | 2010-07-30 09:08:08 -0300 | [diff] [blame] | 1273 | goto out; |
Arnaldo Carvalho de Melo | 4d1e00a | 2009-08-05 19:02:49 -0300 | [diff] [blame] | 1274 | } |
| 1275 | |
Arnaldo Carvalho de Melo | 2643ce1 | 2009-11-03 21:46:10 -0200 | [diff] [blame] | 1276 | sec = elf_section_by_name(elf, &ehdr, &shdr, |
| 1277 | ".note.gnu.build-id", NULL); |
Arnaldo Carvalho de Melo | fd7a346 | 2009-11-20 20:51:25 -0200 | [diff] [blame] | 1278 | if (sec == NULL) { |
| 1279 | sec = elf_section_by_name(elf, &ehdr, &shdr, |
| 1280 | ".notes", NULL); |
| 1281 | if (sec == NULL) |
Dave Martin | 21916c3 | 2010-07-30 09:08:08 -0300 | [diff] [blame] | 1282 | goto out; |
Arnaldo Carvalho de Melo | fd7a346 | 2009-11-20 20:51:25 -0200 | [diff] [blame] | 1283 | } |
| 1284 | |
| 1285 | data = elf_getdata(sec, NULL); |
| 1286 | if (data == NULL) |
Dave Martin | 21916c3 | 2010-07-30 09:08:08 -0300 | [diff] [blame] | 1287 | goto out; |
Arnaldo Carvalho de Melo | 4d1e00a | 2009-08-05 19:02:49 -0300 | [diff] [blame] | 1288 | |
Arnaldo Carvalho de Melo | fd7a346 | 2009-11-20 20:51:25 -0200 | [diff] [blame] | 1289 | ptr = data->d_buf; |
| 1290 | while (ptr < (data->d_buf + data->d_size)) { |
| 1291 | GElf_Nhdr *nhdr = ptr; |
| 1292 | int namesz = NOTE_ALIGN(nhdr->n_namesz), |
| 1293 | descsz = NOTE_ALIGN(nhdr->n_descsz); |
| 1294 | const char *name; |
| 1295 | |
| 1296 | ptr += sizeof(*nhdr); |
| 1297 | name = ptr; |
| 1298 | ptr += namesz; |
| 1299 | if (nhdr->n_type == NT_GNU_BUILD_ID && |
| 1300 | nhdr->n_namesz == sizeof("GNU")) { |
| 1301 | if (memcmp(name, "GNU", sizeof("GNU")) == 0) { |
| 1302 | memcpy(bf, ptr, BUILD_ID_SIZE); |
| 1303 | err = BUILD_ID_SIZE; |
| 1304 | break; |
| 1305 | } |
| 1306 | } |
| 1307 | ptr += descsz; |
| 1308 | } |
Dave Martin | 21916c3 | 2010-07-30 09:08:08 -0300 | [diff] [blame] | 1309 | |
| 1310 | out: |
| 1311 | return err; |
| 1312 | } |
| 1313 | |
| 1314 | int filename__read_build_id(const char *filename, void *bf, size_t size) |
| 1315 | { |
| 1316 | int fd, err = -1; |
| 1317 | Elf *elf; |
| 1318 | |
| 1319 | if (size < BUILD_ID_SIZE) |
| 1320 | goto out; |
| 1321 | |
| 1322 | fd = open(filename, O_RDONLY); |
| 1323 | if (fd < 0) |
| 1324 | goto out; |
| 1325 | |
| 1326 | elf = elf_begin(fd, PERF_ELF_C_READ_MMAP, NULL); |
| 1327 | if (elf == NULL) { |
| 1328 | pr_debug2("%s: cannot read %s ELF file.\n", __func__, filename); |
| 1329 | goto out_close; |
| 1330 | } |
| 1331 | |
| 1332 | err = elf_read_build_id(elf, bf, size); |
| 1333 | |
Arnaldo Carvalho de Melo | 2643ce1 | 2009-11-03 21:46:10 -0200 | [diff] [blame] | 1334 | elf_end(elf); |
| 1335 | out_close: |
| 1336 | close(fd); |
| 1337 | out: |
| 1338 | return err; |
| 1339 | } |
| 1340 | |
Arnaldo Carvalho de Melo | f1617b4 | 2009-11-18 20:20:52 -0200 | [diff] [blame] | 1341 | int sysfs__read_build_id(const char *filename, void *build_id, size_t size) |
| 1342 | { |
| 1343 | int fd, err = -1; |
| 1344 | |
| 1345 | if (size < BUILD_ID_SIZE) |
| 1346 | goto out; |
| 1347 | |
| 1348 | fd = open(filename, O_RDONLY); |
| 1349 | if (fd < 0) |
| 1350 | goto out; |
| 1351 | |
| 1352 | while (1) { |
| 1353 | char bf[BUFSIZ]; |
| 1354 | GElf_Nhdr nhdr; |
| 1355 | int namesz, descsz; |
| 1356 | |
| 1357 | if (read(fd, &nhdr, sizeof(nhdr)) != sizeof(nhdr)) |
| 1358 | break; |
| 1359 | |
Arnaldo Carvalho de Melo | fd7a346 | 2009-11-20 20:51:25 -0200 | [diff] [blame] | 1360 | namesz = NOTE_ALIGN(nhdr.n_namesz); |
| 1361 | descsz = NOTE_ALIGN(nhdr.n_descsz); |
Arnaldo Carvalho de Melo | f1617b4 | 2009-11-18 20:20:52 -0200 | [diff] [blame] | 1362 | if (nhdr.n_type == NT_GNU_BUILD_ID && |
| 1363 | nhdr.n_namesz == sizeof("GNU")) { |
| 1364 | if (read(fd, bf, namesz) != namesz) |
| 1365 | break; |
| 1366 | if (memcmp(bf, "GNU", sizeof("GNU")) == 0) { |
| 1367 | if (read(fd, build_id, |
| 1368 | BUILD_ID_SIZE) == BUILD_ID_SIZE) { |
| 1369 | err = 0; |
| 1370 | break; |
| 1371 | } |
| 1372 | } else if (read(fd, bf, descsz) != descsz) |
| 1373 | break; |
| 1374 | } else { |
| 1375 | int n = namesz + descsz; |
| 1376 | if (read(fd, bf, n) != n) |
| 1377 | break; |
| 1378 | } |
| 1379 | } |
| 1380 | close(fd); |
| 1381 | out: |
| 1382 | return err; |
| 1383 | } |
| 1384 | |
Arnaldo Carvalho de Melo | 94cb9e3 | 2009-08-06 14:43:17 -0300 | [diff] [blame] | 1385 | char dso__symtab_origin(const struct dso *self) |
| 1386 | { |
| 1387 | static const char origin[] = { |
| 1388 | [DSO__ORIG_KERNEL] = 'k', |
| 1389 | [DSO__ORIG_JAVA_JIT] = 'j', |
Arnaldo Carvalho de Melo | 4cf4013 | 2009-12-27 21:37:06 -0200 | [diff] [blame] | 1390 | [DSO__ORIG_BUILD_ID_CACHE] = 'B', |
Arnaldo Carvalho de Melo | 94cb9e3 | 2009-08-06 14:43:17 -0300 | [diff] [blame] | 1391 | [DSO__ORIG_FEDORA] = 'f', |
| 1392 | [DSO__ORIG_UBUNTU] = 'u', |
| 1393 | [DSO__ORIG_BUILDID] = 'b', |
| 1394 | [DSO__ORIG_DSO] = 'd', |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1395 | [DSO__ORIG_KMODULE] = 'K', |
Zhang, Yanmin | a1645ce | 2010-04-19 13:32:50 +0800 | [diff] [blame] | 1396 | [DSO__ORIG_GUEST_KERNEL] = 'g', |
| 1397 | [DSO__ORIG_GUEST_KMODULE] = 'G', |
Arnaldo Carvalho de Melo | 94cb9e3 | 2009-08-06 14:43:17 -0300 | [diff] [blame] | 1398 | }; |
| 1399 | |
| 1400 | if (self == NULL || self->origin == DSO__ORIG_NOT_FOUND) |
| 1401 | return '!'; |
| 1402 | return origin[self->origin]; |
| 1403 | } |
| 1404 | |
Arnaldo Carvalho de Melo | 9de89fe | 2010-02-03 16:52:00 -0200 | [diff] [blame] | 1405 | int dso__load(struct dso *self, struct map *map, symbol_filter_t filter) |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 1406 | { |
Arnaldo Carvalho de Melo | 4d1e00a | 2009-08-05 19:02:49 -0300 | [diff] [blame] | 1407 | int size = PATH_MAX; |
Arnaldo Carvalho de Melo | c338aee | 2009-11-20 20:51:27 -0200 | [diff] [blame] | 1408 | char *name; |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 1409 | int ret = -1; |
| 1410 | int fd; |
Arnaldo Carvalho de Melo | 23346f2 | 2010-04-27 21:17:50 -0300 | [diff] [blame] | 1411 | struct machine *machine; |
Zhang, Yanmin | a1645ce | 2010-04-19 13:32:50 +0800 | [diff] [blame] | 1412 | const char *root_dir; |
Dave Martin | 6da80ce | 2010-07-30 09:50:09 -0300 | [diff] [blame] | 1413 | int want_symtab; |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 1414 | |
Arnaldo Carvalho de Melo | 3610583 | 2009-11-27 16:29:16 -0200 | [diff] [blame] | 1415 | dso__set_loaded(self, map->type); |
Arnaldo Carvalho de Melo | 66bd842 | 2009-10-28 21:51:21 -0200 | [diff] [blame] | 1416 | |
Zhang, Yanmin | a1645ce | 2010-04-19 13:32:50 +0800 | [diff] [blame] | 1417 | if (self->kernel == DSO_TYPE_KERNEL) |
Arnaldo Carvalho de Melo | 9de89fe | 2010-02-03 16:52:00 -0200 | [diff] [blame] | 1418 | return dso__load_kernel_sym(self, map, filter); |
Zhang, Yanmin | a1645ce | 2010-04-19 13:32:50 +0800 | [diff] [blame] | 1419 | else if (self->kernel == DSO_TYPE_GUEST_KERNEL) |
| 1420 | return dso__load_guest_kernel_sym(self, map, filter); |
| 1421 | |
Arnaldo Carvalho de Melo | 23346f2 | 2010-04-27 21:17:50 -0300 | [diff] [blame] | 1422 | if (map->groups && map->groups->machine) |
| 1423 | machine = map->groups->machine; |
Zhang, Yanmin | a1645ce | 2010-04-19 13:32:50 +0800 | [diff] [blame] | 1424 | else |
Arnaldo Carvalho de Melo | 23346f2 | 2010-04-27 21:17:50 -0300 | [diff] [blame] | 1425 | machine = NULL; |
Arnaldo Carvalho de Melo | c338aee | 2009-11-20 20:51:27 -0200 | [diff] [blame] | 1426 | |
| 1427 | name = malloc(size); |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 1428 | if (!name) |
| 1429 | return -1; |
| 1430 | |
Arnaldo Carvalho de Melo | 30d7a77 | 2009-07-02 21:24:14 -0300 | [diff] [blame] | 1431 | self->adjust_symbols = 0; |
Arnaldo Carvalho de Melo | f5812a7 | 2009-06-30 11:43:17 -0300 | [diff] [blame] | 1432 | |
Arnaldo Carvalho de Melo | 94cb9e3 | 2009-08-06 14:43:17 -0300 | [diff] [blame] | 1433 | if (strncmp(self->name, "/tmp/perf-", 10) == 0) { |
Arnaldo Carvalho de Melo | 6beba7a | 2009-10-21 17:34:06 -0200 | [diff] [blame] | 1434 | ret = dso__load_perf_map(self, map, filter); |
Arnaldo Carvalho de Melo | 94cb9e3 | 2009-08-06 14:43:17 -0300 | [diff] [blame] | 1435 | self->origin = ret > 0 ? DSO__ORIG_JAVA_JIT : |
| 1436 | DSO__ORIG_NOT_FOUND; |
| 1437 | return ret; |
| 1438 | } |
| 1439 | |
Dave Martin | 6da80ce | 2010-07-30 09:50:09 -0300 | [diff] [blame] | 1440 | /* Iterate over candidate debug images. |
| 1441 | * On the first pass, only load images if they have a full symtab. |
| 1442 | * Failing that, do a second pass where we accept .dynsym also |
| 1443 | */ |
| 1444 | for (self->origin = DSO__ORIG_BUILD_ID_CACHE, want_symtab = 1; |
| 1445 | self->origin != DSO__ORIG_NOT_FOUND; |
| 1446 | self->origin++) { |
Arnaldo Carvalho de Melo | 94cb9e3 | 2009-08-06 14:43:17 -0300 | [diff] [blame] | 1447 | switch (self->origin) { |
Dave Martin | 6da80ce | 2010-07-30 09:50:09 -0300 | [diff] [blame] | 1448 | case DSO__ORIG_BUILD_ID_CACHE: |
| 1449 | if (dso__build_id_filename(self, name, size) == NULL) |
| 1450 | continue; |
| 1451 | break; |
Arnaldo Carvalho de Melo | 94cb9e3 | 2009-08-06 14:43:17 -0300 | [diff] [blame] | 1452 | case DSO__ORIG_FEDORA: |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1453 | snprintf(name, size, "/usr/lib/debug%s.debug", |
| 1454 | self->long_name); |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 1455 | break; |
Arnaldo Carvalho de Melo | 94cb9e3 | 2009-08-06 14:43:17 -0300 | [diff] [blame] | 1456 | case DSO__ORIG_UBUNTU: |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1457 | snprintf(name, size, "/usr/lib/debug%s", |
| 1458 | self->long_name); |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 1459 | break; |
Dave Martin | 6da80ce | 2010-07-30 09:50:09 -0300 | [diff] [blame] | 1460 | case DSO__ORIG_BUILDID: { |
| 1461 | char build_id_hex[BUILD_ID_SIZE * 2 + 1]; |
| 1462 | |
| 1463 | if (!self->has_build_id) |
| 1464 | continue; |
| 1465 | |
| 1466 | build_id__sprintf(self->build_id, |
| 1467 | sizeof(self->build_id), |
| 1468 | build_id_hex); |
| 1469 | snprintf(name, size, |
| 1470 | "/usr/lib/debug/.build-id/%.2s/%s.debug", |
| 1471 | build_id_hex, build_id_hex + 2); |
Arnaldo Carvalho de Melo | 4d1e00a | 2009-08-05 19:02:49 -0300 | [diff] [blame] | 1472 | } |
Dave Martin | 6da80ce | 2010-07-30 09:50:09 -0300 | [diff] [blame] | 1473 | break; |
Arnaldo Carvalho de Melo | 94cb9e3 | 2009-08-06 14:43:17 -0300 | [diff] [blame] | 1474 | case DSO__ORIG_DSO: |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1475 | snprintf(name, size, "%s", self->long_name); |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 1476 | break; |
Zhang, Yanmin | a1645ce | 2010-04-19 13:32:50 +0800 | [diff] [blame] | 1477 | case DSO__ORIG_GUEST_KMODULE: |
Arnaldo Carvalho de Melo | 23346f2 | 2010-04-27 21:17:50 -0300 | [diff] [blame] | 1478 | if (map->groups && map->groups->machine) |
| 1479 | root_dir = map->groups->machine->root_dir; |
Zhang, Yanmin | a1645ce | 2010-04-19 13:32:50 +0800 | [diff] [blame] | 1480 | else |
| 1481 | root_dir = ""; |
| 1482 | snprintf(name, size, "%s%s", root_dir, self->long_name); |
| 1483 | break; |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 1484 | |
| 1485 | default: |
Dave Martin | 6da80ce | 2010-07-30 09:50:09 -0300 | [diff] [blame] | 1486 | /* |
| 1487 | * If we wanted a full symtab but no image had one, |
| 1488 | * relax our requirements and repeat the search. |
| 1489 | */ |
| 1490 | if (want_symtab) { |
| 1491 | want_symtab = 0; |
| 1492 | self->origin = DSO__ORIG_BUILD_ID_CACHE; |
| 1493 | } else |
| 1494 | continue; |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 1495 | } |
Dave Martin | 6da80ce | 2010-07-30 09:50:09 -0300 | [diff] [blame] | 1496 | |
| 1497 | /* 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] | 1498 | fd = open(name, O_RDONLY); |
Dave Martin | 6da80ce | 2010-07-30 09:50:09 -0300 | [diff] [blame] | 1499 | if (fd < 0) |
| 1500 | continue; |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 1501 | |
Dave Martin | 6da80ce | 2010-07-30 09:50:09 -0300 | [diff] [blame] | 1502 | ret = dso__load_sym(self, map, name, fd, filter, 0, |
| 1503 | want_symtab); |
| 1504 | close(fd); |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 1505 | |
Dave Martin | 6da80ce | 2010-07-30 09:50:09 -0300 | [diff] [blame] | 1506 | /* |
| 1507 | * Some people seem to have debuginfo files _WITHOUT_ debug |
| 1508 | * info!?!? |
| 1509 | */ |
| 1510 | if (!ret) |
| 1511 | continue; |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 1512 | |
Dave Martin | 6da80ce | 2010-07-30 09:50:09 -0300 | [diff] [blame] | 1513 | if (ret > 0) { |
| 1514 | int nr_plt = dso__synthesize_plt_symbols(self, map, filter); |
| 1515 | if (nr_plt > 0) |
| 1516 | ret += nr_plt; |
| 1517 | break; |
| 1518 | } |
Arnaldo Carvalho de Melo | a25e46c | 2009-07-11 12:18:36 -0300 | [diff] [blame] | 1519 | } |
Dave Martin | 6da80ce | 2010-07-30 09:50:09 -0300 | [diff] [blame] | 1520 | |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 1521 | free(name); |
Arnaldo Carvalho de Melo | 1340e6b | 2009-08-11 17:04:36 -0300 | [diff] [blame] | 1522 | if (ret < 0 && strstr(self->name, " (deleted)") != NULL) |
| 1523 | return 0; |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 1524 | return ret; |
| 1525 | } |
| 1526 | |
Arnaldo Carvalho de Melo | 79406cd | 2009-12-11 18:50:22 -0200 | [diff] [blame] | 1527 | struct map *map_groups__find_by_name(struct map_groups *self, |
| 1528 | enum map_type type, const char *name) |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1529 | { |
| 1530 | struct rb_node *nd; |
| 1531 | |
Arnaldo Carvalho de Melo | 79406cd | 2009-12-11 18:50:22 -0200 | [diff] [blame] | 1532 | for (nd = rb_first(&self->maps[type]); nd; nd = rb_next(nd)) { |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1533 | struct map *map = rb_entry(nd, struct map, rb_node); |
| 1534 | |
Arnaldo Carvalho de Melo | b7cece7 | 2010-01-13 13:22:17 -0200 | [diff] [blame] | 1535 | if (map->dso && strcmp(map->dso->short_name, name) == 0) |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1536 | return map; |
| 1537 | } |
| 1538 | |
| 1539 | return NULL; |
| 1540 | } |
| 1541 | |
Zhang, Yanmin | a1645ce | 2010-04-19 13:32:50 +0800 | [diff] [blame] | 1542 | static int dso__kernel_module_get_build_id(struct dso *self, |
| 1543 | const char *root_dir) |
Arnaldo Carvalho de Melo | b7cece7 | 2010-01-13 13:22:17 -0200 | [diff] [blame] | 1544 | { |
| 1545 | char filename[PATH_MAX]; |
| 1546 | /* |
| 1547 | * kernel module short names are of the form "[module]" and |
| 1548 | * we need just "module" here. |
| 1549 | */ |
| 1550 | const char *name = self->short_name + 1; |
| 1551 | |
| 1552 | snprintf(filename, sizeof(filename), |
Zhang, Yanmin | a1645ce | 2010-04-19 13:32:50 +0800 | [diff] [blame] | 1553 | "%s/sys/module/%.*s/notes/.note.gnu.build-id", |
| 1554 | root_dir, (int)strlen(name) - 1, name); |
Arnaldo Carvalho de Melo | b7cece7 | 2010-01-13 13:22:17 -0200 | [diff] [blame] | 1555 | |
| 1556 | if (sysfs__read_build_id(filename, self->build_id, |
| 1557 | sizeof(self->build_id)) == 0) |
| 1558 | self->has_build_id = true; |
| 1559 | |
| 1560 | return 0; |
| 1561 | } |
| 1562 | |
Zhang, Yanmin | a1645ce | 2010-04-19 13:32:50 +0800 | [diff] [blame] | 1563 | static int map_groups__set_modules_path_dir(struct map_groups *self, |
| 1564 | const char *dir_name) |
Mike Galbraith | 6cfcc53 | 2009-07-02 08:08:36 +0200 | [diff] [blame] | 1565 | { |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1566 | struct dirent *dent; |
Arnaldo Carvalho de Melo | 5aab621 | 2010-03-25 19:59:00 -0300 | [diff] [blame] | 1567 | DIR *dir = opendir(dir_name); |
Gui Jianfeng | 7453434 | 2010-06-24 15:04:02 +0800 | [diff] [blame] | 1568 | int ret = 0; |
Mike Galbraith | 6cfcc53 | 2009-07-02 08:08:36 +0200 | [diff] [blame] | 1569 | |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1570 | if (!dir) { |
Arnaldo Carvalho de Melo | 5aab621 | 2010-03-25 19:59:00 -0300 | [diff] [blame] | 1571 | 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] | 1572 | return -1; |
Mike Galbraith | 6cfcc53 | 2009-07-02 08:08:36 +0200 | [diff] [blame] | 1573 | } |
| 1574 | |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1575 | while ((dent = readdir(dir)) != NULL) { |
| 1576 | char path[PATH_MAX]; |
Zhang, Yanmin | a1645ce | 2010-04-19 13:32:50 +0800 | [diff] [blame] | 1577 | struct stat st; |
Mike Galbraith | 6cfcc53 | 2009-07-02 08:08:36 +0200 | [diff] [blame] | 1578 | |
Zhang, Yanmin | a1645ce | 2010-04-19 13:32:50 +0800 | [diff] [blame] | 1579 | /*sshfs might return bad dent->d_type, so we have to stat*/ |
| 1580 | sprintf(path, "%s/%s", dir_name, dent->d_name); |
| 1581 | if (stat(path, &st)) |
| 1582 | continue; |
| 1583 | |
| 1584 | if (S_ISDIR(st.st_mode)) { |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1585 | if (!strcmp(dent->d_name, ".") || |
| 1586 | !strcmp(dent->d_name, "..")) |
| 1587 | continue; |
Mike Galbraith | 6cfcc53 | 2009-07-02 08:08:36 +0200 | [diff] [blame] | 1588 | |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1589 | snprintf(path, sizeof(path), "%s/%s", |
Arnaldo Carvalho de Melo | 5aab621 | 2010-03-25 19:59:00 -0300 | [diff] [blame] | 1590 | dir_name, dent->d_name); |
Gui Jianfeng | 7453434 | 2010-06-24 15:04:02 +0800 | [diff] [blame] | 1591 | ret = map_groups__set_modules_path_dir(self, path); |
| 1592 | if (ret < 0) |
| 1593 | goto out; |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1594 | } else { |
| 1595 | char *dot = strrchr(dent->d_name, '.'), |
| 1596 | dso_name[PATH_MAX]; |
| 1597 | struct map *map; |
Arnaldo Carvalho de Melo | cfc10d3 | 2009-11-17 15:40:53 -0200 | [diff] [blame] | 1598 | char *long_name; |
Mike Galbraith | 6cfcc53 | 2009-07-02 08:08:36 +0200 | [diff] [blame] | 1599 | |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1600 | if (dot == NULL || strcmp(dot, ".ko")) |
| 1601 | continue; |
| 1602 | snprintf(dso_name, sizeof(dso_name), "[%.*s]", |
| 1603 | (int)(dot - dent->d_name), dent->d_name); |
Mike Galbraith | 6cfcc53 | 2009-07-02 08:08:36 +0200 | [diff] [blame] | 1604 | |
Arnaldo Carvalho de Melo | a2a99e8 | 2009-10-05 14:26:18 -0300 | [diff] [blame] | 1605 | strxfrchar(dso_name, '-', '_'); |
Arnaldo Carvalho de Melo | 9de89fe | 2010-02-03 16:52:00 -0200 | [diff] [blame] | 1606 | map = map_groups__find_by_name(self, MAP__FUNCTION, dso_name); |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1607 | if (map == NULL) |
| 1608 | continue; |
Mike Galbraith | 6cfcc53 | 2009-07-02 08:08:36 +0200 | [diff] [blame] | 1609 | |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1610 | snprintf(path, sizeof(path), "%s/%s", |
Arnaldo Carvalho de Melo | 5aab621 | 2010-03-25 19:59:00 -0300 | [diff] [blame] | 1611 | dir_name, dent->d_name); |
Mike Galbraith | 6cfcc53 | 2009-07-02 08:08:36 +0200 | [diff] [blame] | 1612 | |
Arnaldo Carvalho de Melo | cfc10d3 | 2009-11-17 15:40:53 -0200 | [diff] [blame] | 1613 | long_name = strdup(path); |
Gui Jianfeng | 7453434 | 2010-06-24 15:04:02 +0800 | [diff] [blame] | 1614 | if (long_name == NULL) { |
| 1615 | ret = -1; |
| 1616 | goto out; |
| 1617 | } |
Arnaldo Carvalho de Melo | cfc10d3 | 2009-11-17 15:40:53 -0200 | [diff] [blame] | 1618 | dso__set_long_name(map->dso, long_name); |
Arnaldo Carvalho de Melo | 6e40625 | 2010-07-29 15:11:30 -0300 | [diff] [blame] | 1619 | map->dso->lname_alloc = 1; |
Zhang, Yanmin | a1645ce | 2010-04-19 13:32:50 +0800 | [diff] [blame] | 1620 | dso__kernel_module_get_build_id(map->dso, ""); |
Mike Galbraith | 6cfcc53 | 2009-07-02 08:08:36 +0200 | [diff] [blame] | 1621 | } |
Mike Galbraith | 6cfcc53 | 2009-07-02 08:08:36 +0200 | [diff] [blame] | 1622 | } |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1623 | |
Gui Jianfeng | 7453434 | 2010-06-24 15:04:02 +0800 | [diff] [blame] | 1624 | out: |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1625 | closedir(dir); |
Gui Jianfeng | 7453434 | 2010-06-24 15:04:02 +0800 | [diff] [blame] | 1626 | return ret; |
Mike Galbraith | 6cfcc53 | 2009-07-02 08:08:36 +0200 | [diff] [blame] | 1627 | } |
| 1628 | |
Zhang, Yanmin | a1645ce | 2010-04-19 13:32:50 +0800 | [diff] [blame] | 1629 | static char *get_kernel_version(const char *root_dir) |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1630 | { |
Zhang, Yanmin | a1645ce | 2010-04-19 13:32:50 +0800 | [diff] [blame] | 1631 | char version[PATH_MAX]; |
| 1632 | FILE *file; |
| 1633 | char *name, *tmp; |
| 1634 | const char *prefix = "Linux version "; |
| 1635 | |
| 1636 | sprintf(version, "%s/proc/version", root_dir); |
| 1637 | file = fopen(version, "r"); |
| 1638 | if (!file) |
| 1639 | return NULL; |
| 1640 | |
| 1641 | version[0] = '\0'; |
| 1642 | tmp = fgets(version, sizeof(version), file); |
| 1643 | fclose(file); |
| 1644 | |
| 1645 | name = strstr(version, prefix); |
| 1646 | if (!name) |
| 1647 | return NULL; |
| 1648 | name += strlen(prefix); |
| 1649 | tmp = strchr(name, ' '); |
| 1650 | if (tmp) |
| 1651 | *tmp = '\0'; |
| 1652 | |
| 1653 | return strdup(name); |
| 1654 | } |
| 1655 | |
Arnaldo Carvalho de Melo | d28c622 | 2010-04-27 21:20:43 -0300 | [diff] [blame] | 1656 | static int machine__set_modules_path(struct machine *self) |
Zhang, Yanmin | a1645ce | 2010-04-19 13:32:50 +0800 | [diff] [blame] | 1657 | { |
| 1658 | char *version; |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1659 | char modules_path[PATH_MAX]; |
| 1660 | |
Arnaldo Carvalho de Melo | d28c622 | 2010-04-27 21:20:43 -0300 | [diff] [blame] | 1661 | version = get_kernel_version(self->root_dir); |
Zhang, Yanmin | a1645ce | 2010-04-19 13:32:50 +0800 | [diff] [blame] | 1662 | if (!version) |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1663 | return -1; |
| 1664 | |
Zhang, Yanmin | a1645ce | 2010-04-19 13:32:50 +0800 | [diff] [blame] | 1665 | snprintf(modules_path, sizeof(modules_path), "%s/lib/modules/%s/kernel", |
Arnaldo Carvalho de Melo | d28c622 | 2010-04-27 21:20:43 -0300 | [diff] [blame] | 1666 | self->root_dir, version); |
Zhang, Yanmin | a1645ce | 2010-04-19 13:32:50 +0800 | [diff] [blame] | 1667 | free(version); |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1668 | |
Arnaldo Carvalho de Melo | d28c622 | 2010-04-27 21:20:43 -0300 | [diff] [blame] | 1669 | return map_groups__set_modules_path_dir(&self->kmaps, modules_path); |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1670 | } |
| 1671 | |
| 1672 | /* |
| 1673 | * Constructor variant for modules (where we know from /proc/modules where |
| 1674 | * they are loaded) and for vmlinux, where only after we load all the |
| 1675 | * symbols we'll know where it starts and ends. |
| 1676 | */ |
Arnaldo Carvalho de Melo | 3610583 | 2009-11-27 16:29:16 -0200 | [diff] [blame] | 1677 | 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] | 1678 | { |
Arnaldo Carvalho de Melo | 5aab621 | 2010-03-25 19:59:00 -0300 | [diff] [blame] | 1679 | struct map *self = calloc(1, (sizeof(*self) + |
| 1680 | (dso->kernel ? sizeof(struct kmap) : 0))); |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1681 | if (self != NULL) { |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1682 | /* |
Arnaldo Carvalho de Melo | afb7b4f | 2009-10-30 16:28:23 -0200 | [diff] [blame] | 1683 | * ->end will be filled after we load all the symbols |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1684 | */ |
Arnaldo Carvalho de Melo | 3610583 | 2009-11-27 16:29:16 -0200 | [diff] [blame] | 1685 | map__init(self, type, start, 0, 0, dso); |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1686 | } |
Arnaldo Carvalho de Melo | afb7b4f | 2009-10-30 16:28:23 -0200 | [diff] [blame] | 1687 | |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1688 | return self; |
| 1689 | } |
| 1690 | |
Arnaldo Carvalho de Melo | d28c622 | 2010-04-27 21:20:43 -0300 | [diff] [blame] | 1691 | struct map *machine__new_module(struct machine *self, u64 start, |
| 1692 | const char *filename) |
Arnaldo Carvalho de Melo | b7cece7 | 2010-01-13 13:22:17 -0200 | [diff] [blame] | 1693 | { |
| 1694 | struct map *map; |
Arnaldo Carvalho de Melo | d28c622 | 2010-04-27 21:20:43 -0300 | [diff] [blame] | 1695 | struct dso *dso = __dsos__findnew(&self->kernel_dsos, filename); |
Arnaldo Carvalho de Melo | b7cece7 | 2010-01-13 13:22:17 -0200 | [diff] [blame] | 1696 | |
| 1697 | if (dso == NULL) |
| 1698 | return NULL; |
| 1699 | |
| 1700 | map = map__new2(start, dso, MAP__FUNCTION); |
| 1701 | if (map == NULL) |
| 1702 | return NULL; |
| 1703 | |
Arnaldo Carvalho de Melo | d28c622 | 2010-04-27 21:20:43 -0300 | [diff] [blame] | 1704 | if (machine__is_host(self)) |
Zhang, Yanmin | a1645ce | 2010-04-19 13:32:50 +0800 | [diff] [blame] | 1705 | dso->origin = DSO__ORIG_KMODULE; |
| 1706 | else |
| 1707 | dso->origin = DSO__ORIG_GUEST_KMODULE; |
Arnaldo Carvalho de Melo | d28c622 | 2010-04-27 21:20:43 -0300 | [diff] [blame] | 1708 | map_groups__insert(&self->kmaps, map); |
Arnaldo Carvalho de Melo | b7cece7 | 2010-01-13 13:22:17 -0200 | [diff] [blame] | 1709 | return map; |
| 1710 | } |
| 1711 | |
Arnaldo Carvalho de Melo | d28c622 | 2010-04-27 21:20:43 -0300 | [diff] [blame] | 1712 | static int machine__create_modules(struct machine *self) |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1713 | { |
| 1714 | char *line = NULL; |
| 1715 | size_t n; |
Zhang, Yanmin | a1645ce | 2010-04-19 13:32:50 +0800 | [diff] [blame] | 1716 | FILE *file; |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1717 | struct map *map; |
Zhang, Yanmin | a1645ce | 2010-04-19 13:32:50 +0800 | [diff] [blame] | 1718 | const char *modules; |
| 1719 | char path[PATH_MAX]; |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1720 | |
Arnaldo Carvalho de Melo | d28c622 | 2010-04-27 21:20:43 -0300 | [diff] [blame] | 1721 | if (machine__is_default_guest(self)) |
Zhang, Yanmin | a1645ce | 2010-04-19 13:32:50 +0800 | [diff] [blame] | 1722 | modules = symbol_conf.default_guest_modules; |
| 1723 | else { |
Arnaldo Carvalho de Melo | d28c622 | 2010-04-27 21:20:43 -0300 | [diff] [blame] | 1724 | sprintf(path, "%s/proc/modules", self->root_dir); |
Zhang, Yanmin | a1645ce | 2010-04-19 13:32:50 +0800 | [diff] [blame] | 1725 | modules = path; |
| 1726 | } |
| 1727 | |
| 1728 | file = fopen(modules, "r"); |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1729 | if (file == NULL) |
| 1730 | return -1; |
| 1731 | |
| 1732 | while (!feof(file)) { |
| 1733 | char name[PATH_MAX]; |
| 1734 | u64 start; |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1735 | char *sep; |
| 1736 | int line_len; |
| 1737 | |
| 1738 | line_len = getline(&line, &n, file); |
| 1739 | if (line_len < 0) |
| 1740 | break; |
| 1741 | |
| 1742 | if (!line) |
| 1743 | goto out_failure; |
| 1744 | |
| 1745 | line[--line_len] = '\0'; /* \n */ |
| 1746 | |
| 1747 | sep = strrchr(line, 'x'); |
| 1748 | if (sep == NULL) |
| 1749 | continue; |
| 1750 | |
| 1751 | hex2u64(sep + 1, &start); |
| 1752 | |
| 1753 | sep = strchr(line, ' '); |
| 1754 | if (sep == NULL) |
| 1755 | continue; |
| 1756 | |
| 1757 | *sep = '\0'; |
| 1758 | |
| 1759 | snprintf(name, sizeof(name), "[%s]", line); |
Arnaldo Carvalho de Melo | d28c622 | 2010-04-27 21:20:43 -0300 | [diff] [blame] | 1760 | map = machine__new_module(self, start, name); |
Arnaldo Carvalho de Melo | b7cece7 | 2010-01-13 13:22:17 -0200 | [diff] [blame] | 1761 | if (map == NULL) |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1762 | goto out_delete_line; |
Arnaldo Carvalho de Melo | d28c622 | 2010-04-27 21:20:43 -0300 | [diff] [blame] | 1763 | dso__kernel_module_get_build_id(map->dso, self->root_dir); |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1764 | } |
| 1765 | |
| 1766 | free(line); |
| 1767 | fclose(file); |
| 1768 | |
Arnaldo Carvalho de Melo | d28c622 | 2010-04-27 21:20:43 -0300 | [diff] [blame] | 1769 | return machine__set_modules_path(self); |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1770 | |
| 1771 | out_delete_line: |
| 1772 | free(line); |
| 1773 | out_failure: |
| 1774 | return -1; |
| 1775 | } |
| 1776 | |
Arnaldo Carvalho de Melo | 9958e1f | 2009-12-11 14:50:36 -0200 | [diff] [blame] | 1777 | static int dso__load_vmlinux(struct dso *self, struct map *map, |
Arnaldo Carvalho de Melo | 6beba7a | 2009-10-21 17:34:06 -0200 | [diff] [blame] | 1778 | const char *vmlinux, symbol_filter_t filter) |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 1779 | { |
Arnaldo Carvalho de Melo | fbd733b | 2009-11-20 20:51:28 -0200 | [diff] [blame] | 1780 | int err = -1, fd; |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 1781 | |
Arnaldo Carvalho de Melo | fbd733b | 2009-11-20 20:51:28 -0200 | [diff] [blame] | 1782 | fd = open(vmlinux, O_RDONLY); |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 1783 | if (fd < 0) |
| 1784 | return -1; |
| 1785 | |
Arnaldo Carvalho de Melo | 3610583 | 2009-11-27 16:29:16 -0200 | [diff] [blame] | 1786 | dso__set_loaded(self, map->type); |
Dave Martin | 6da80ce | 2010-07-30 09:50:09 -0300 | [diff] [blame] | 1787 | err = dso__load_sym(self, map, vmlinux, fd, filter, 0, 0); |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 1788 | close(fd); |
| 1789 | |
Arnaldo Carvalho de Melo | 3846df2 | 2010-02-22 16:15:39 -0300 | [diff] [blame] | 1790 | if (err > 0) |
| 1791 | pr_debug("Using %s for symbols\n", vmlinux); |
| 1792 | |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 1793 | return err; |
| 1794 | } |
| 1795 | |
Arnaldo Carvalho de Melo | a19afe4 | 2010-01-27 21:05:50 -0200 | [diff] [blame] | 1796 | int dso__load_vmlinux_path(struct dso *self, struct map *map, |
Arnaldo Carvalho de Melo | 9de89fe | 2010-02-03 16:52:00 -0200 | [diff] [blame] | 1797 | symbol_filter_t filter) |
Arnaldo Carvalho de Melo | a19afe4 | 2010-01-27 21:05:50 -0200 | [diff] [blame] | 1798 | { |
| 1799 | int i, err = 0; |
Arnaldo Carvalho de Melo | 5ad90e4 | 2010-05-26 13:26:02 -0300 | [diff] [blame] | 1800 | char *filename; |
Arnaldo Carvalho de Melo | a19afe4 | 2010-01-27 21:05:50 -0200 | [diff] [blame] | 1801 | |
| 1802 | 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] | 1803 | vmlinux_path__nr_entries + 1); |
| 1804 | |
| 1805 | filename = dso__build_id_filename(self, NULL, 0); |
| 1806 | if (filename != NULL) { |
| 1807 | err = dso__load_vmlinux(self, map, filename, filter); |
| 1808 | if (err > 0) { |
| 1809 | dso__set_long_name(self, filename); |
| 1810 | goto out; |
| 1811 | } |
| 1812 | free(filename); |
| 1813 | } |
Arnaldo Carvalho de Melo | a19afe4 | 2010-01-27 21:05:50 -0200 | [diff] [blame] | 1814 | |
| 1815 | for (i = 0; i < vmlinux_path__nr_entries; ++i) { |
Arnaldo Carvalho de Melo | 9de89fe | 2010-02-03 16:52:00 -0200 | [diff] [blame] | 1816 | err = dso__load_vmlinux(self, map, vmlinux_path[i], filter); |
Arnaldo Carvalho de Melo | a19afe4 | 2010-01-27 21:05:50 -0200 | [diff] [blame] | 1817 | if (err > 0) { |
Arnaldo Carvalho de Melo | a19afe4 | 2010-01-27 21:05:50 -0200 | [diff] [blame] | 1818 | dso__set_long_name(self, strdup(vmlinux_path[i])); |
| 1819 | break; |
| 1820 | } |
| 1821 | } |
Arnaldo Carvalho de Melo | 5ad90e4 | 2010-05-26 13:26:02 -0300 | [diff] [blame] | 1822 | out: |
Arnaldo Carvalho de Melo | a19afe4 | 2010-01-27 21:05:50 -0200 | [diff] [blame] | 1823 | return err; |
| 1824 | } |
| 1825 | |
Arnaldo Carvalho de Melo | c338aee | 2009-11-20 20:51:27 -0200 | [diff] [blame] | 1826 | static int dso__load_kernel_sym(struct dso *self, struct map *map, |
Arnaldo Carvalho de Melo | 9de89fe | 2010-02-03 16:52:00 -0200 | [diff] [blame] | 1827 | symbol_filter_t filter) |
Arnaldo Carvalho de Melo | a827c87 | 2009-05-28 14:55:19 -0300 | [diff] [blame] | 1828 | { |
Arnaldo Carvalho de Melo | cc612d8 | 2009-11-23 16:39:10 -0200 | [diff] [blame] | 1829 | int err; |
Arnaldo Carvalho de Melo | 9e20144 | 2010-01-14 18:30:06 -0200 | [diff] [blame] | 1830 | const char *kallsyms_filename = NULL; |
| 1831 | char *kallsyms_allocated_filename = NULL; |
Arnaldo Carvalho de Melo | dc8d6ab | 2010-01-19 10:36:14 -0200 | [diff] [blame] | 1832 | /* |
| 1833 | * Step 1: if the user specified a vmlinux filename, use it and only |
| 1834 | * it, reporting errors to the user if it cannot be used. |
| 1835 | * |
| 1836 | * For instance, try to analyse an ARM perf.data file _without_ a |
| 1837 | * build-id, or if the user specifies the wrong path to the right |
| 1838 | * vmlinux file, obviously we can't fallback to another vmlinux (a |
| 1839 | * x86_86 one, on the machine where analysis is being performed, say), |
| 1840 | * or worse, /proc/kallsyms. |
| 1841 | * |
| 1842 | * If the specified file _has_ a build-id and there is a build-id |
| 1843 | * section in the perf.data file, we will still do the expected |
| 1844 | * validation in dso__load_vmlinux and will bail out if they don't |
| 1845 | * match. |
| 1846 | */ |
| 1847 | if (symbol_conf.vmlinux_name != NULL) { |
Arnaldo Carvalho de Melo | 9de89fe | 2010-02-03 16:52:00 -0200 | [diff] [blame] | 1848 | err = dso__load_vmlinux(self, map, |
Arnaldo Carvalho de Melo | dc8d6ab | 2010-01-19 10:36:14 -0200 | [diff] [blame] | 1849 | symbol_conf.vmlinux_name, filter); |
Arnaldo Carvalho de Melo | e7dadc0 | 2010-06-03 18:35:55 -0300 | [diff] [blame] | 1850 | if (err > 0) { |
| 1851 | dso__set_long_name(self, |
| 1852 | strdup(symbol_conf.vmlinux_name)); |
| 1853 | goto out_fixup; |
| 1854 | } |
| 1855 | return err; |
Arnaldo Carvalho de Melo | dc8d6ab | 2010-01-19 10:36:14 -0200 | [diff] [blame] | 1856 | } |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1857 | |
Arnaldo Carvalho de Melo | cc612d8 | 2009-11-23 16:39:10 -0200 | [diff] [blame] | 1858 | if (vmlinux_path != NULL) { |
Arnaldo Carvalho de Melo | 9de89fe | 2010-02-03 16:52:00 -0200 | [diff] [blame] | 1859 | err = dso__load_vmlinux_path(self, map, filter); |
Arnaldo Carvalho de Melo | a19afe4 | 2010-01-27 21:05:50 -0200 | [diff] [blame] | 1860 | if (err > 0) |
| 1861 | goto out_fixup; |
Arnaldo Carvalho de Melo | cc612d8 | 2009-11-23 16:39:10 -0200 | [diff] [blame] | 1862 | } |
| 1863 | |
Arnaldo Carvalho de Melo | b7cece7 | 2010-01-13 13:22:17 -0200 | [diff] [blame] | 1864 | /* |
| 1865 | * Say the kernel DSO was created when processing the build-id header table, |
| 1866 | * we have a build-id, so check if it is the same as the running kernel, |
| 1867 | * using it if it is. |
| 1868 | */ |
| 1869 | if (self->has_build_id) { |
| 1870 | u8 kallsyms_build_id[BUILD_ID_SIZE]; |
Arnaldo Carvalho de Melo | 9e20144 | 2010-01-14 18:30:06 -0200 | [diff] [blame] | 1871 | char sbuild_id[BUILD_ID_SIZE * 2 + 1]; |
Arnaldo Carvalho de Melo | b7cece7 | 2010-01-13 13:22:17 -0200 | [diff] [blame] | 1872 | |
| 1873 | 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] | 1874 | sizeof(kallsyms_build_id)) == 0) { |
Arnaldo Carvalho de Melo | 9e20144 | 2010-01-14 18:30:06 -0200 | [diff] [blame] | 1875 | if (dso__build_id_equal(self, kallsyms_build_id)) { |
| 1876 | kallsyms_filename = "/proc/kallsyms"; |
Arnaldo Carvalho de Melo | 8d0591f | 2010-01-14 18:30:05 -0200 | [diff] [blame] | 1877 | goto do_kallsyms; |
Arnaldo Carvalho de Melo | 9e20144 | 2010-01-14 18:30:06 -0200 | [diff] [blame] | 1878 | } |
Arnaldo Carvalho de Melo | 8d0591f | 2010-01-14 18:30:05 -0200 | [diff] [blame] | 1879 | } |
Arnaldo Carvalho de Melo | dc8d6ab | 2010-01-19 10:36:14 -0200 | [diff] [blame] | 1880 | /* |
| 1881 | * Now look if we have it on the build-id cache in |
| 1882 | * $HOME/.debug/[kernel.kallsyms]. |
| 1883 | */ |
Arnaldo Carvalho de Melo | 9e20144 | 2010-01-14 18:30:06 -0200 | [diff] [blame] | 1884 | build_id__sprintf(self->build_id, sizeof(self->build_id), |
| 1885 | sbuild_id); |
| 1886 | |
| 1887 | if (asprintf(&kallsyms_allocated_filename, |
| 1888 | "%s/.debug/[kernel.kallsyms]/%s", |
Arnaldo Carvalho de Melo | 3846df2 | 2010-02-22 16:15:39 -0300 | [diff] [blame] | 1889 | getenv("HOME"), sbuild_id) == -1) { |
| 1890 | pr_err("Not enough memory for kallsyms file lookup\n"); |
Arnaldo Carvalho de Melo | 8d0591f | 2010-01-14 18:30:05 -0200 | [diff] [blame] | 1891 | return -1; |
Arnaldo Carvalho de Melo | 3846df2 | 2010-02-22 16:15:39 -0300 | [diff] [blame] | 1892 | } |
Arnaldo Carvalho de Melo | 8d0591f | 2010-01-14 18:30:05 -0200 | [diff] [blame] | 1893 | |
Arnaldo Carvalho de Melo | 19fc2de | 2010-01-22 14:35:02 -0200 | [diff] [blame] | 1894 | kallsyms_filename = kallsyms_allocated_filename; |
| 1895 | |
Arnaldo Carvalho de Melo | dc8d6ab | 2010-01-19 10:36:14 -0200 | [diff] [blame] | 1896 | if (access(kallsyms_filename, F_OK)) { |
Arnaldo Carvalho de Melo | 3846df2 | 2010-02-22 16:15:39 -0300 | [diff] [blame] | 1897 | pr_err("No kallsyms or vmlinux with build-id %s " |
| 1898 | "was found\n", sbuild_id); |
Arnaldo Carvalho de Melo | dc8d6ab | 2010-01-19 10:36:14 -0200 | [diff] [blame] | 1899 | free(kallsyms_allocated_filename); |
| 1900 | return -1; |
| 1901 | } |
Arnaldo Carvalho de Melo | dc8d6ab | 2010-01-19 10:36:14 -0200 | [diff] [blame] | 1902 | } else { |
| 1903 | /* |
| 1904 | * Last resort, if we don't have a build-id and couldn't find |
| 1905 | * any vmlinux file, try the running kernel kallsyms table. |
| 1906 | */ |
| 1907 | kallsyms_filename = "/proc/kallsyms"; |
Arnaldo Carvalho de Melo | ef6ae72 | 2009-11-20 20:51:29 -0200 | [diff] [blame] | 1908 | } |
Arnaldo Carvalho de Melo | a827c87 | 2009-05-28 14:55:19 -0300 | [diff] [blame] | 1909 | |
Arnaldo Carvalho de Melo | dc8d6ab | 2010-01-19 10:36:14 -0200 | [diff] [blame] | 1910 | do_kallsyms: |
Arnaldo Carvalho de Melo | 9de89fe | 2010-02-03 16:52:00 -0200 | [diff] [blame] | 1911 | err = dso__load_kallsyms(self, kallsyms_filename, map, filter); |
Arnaldo Carvalho de Melo | 3846df2 | 2010-02-22 16:15:39 -0300 | [diff] [blame] | 1912 | if (err > 0) |
| 1913 | pr_debug("Using %s for symbols\n", kallsyms_filename); |
Arnaldo Carvalho de Melo | dc8d6ab | 2010-01-19 10:36:14 -0200 | [diff] [blame] | 1914 | free(kallsyms_allocated_filename); |
| 1915 | |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1916 | if (err > 0) { |
Arnaldo Carvalho de Melo | cc612d8 | 2009-11-23 16:39:10 -0200 | [diff] [blame] | 1917 | out_fixup: |
Arnaldo Carvalho de Melo | e1c7c6a | 2010-01-22 14:35:01 -0200 | [diff] [blame] | 1918 | if (kallsyms_filename != NULL) |
Arnaldo Carvalho de Melo | dc8d6ab | 2010-01-19 10:36:14 -0200 | [diff] [blame] | 1919 | dso__set_long_name(self, strdup("[kernel.kallsyms]")); |
Arnaldo Carvalho de Melo | 6a4694a | 2009-11-27 16:29:17 -0200 | [diff] [blame] | 1920 | map__fixup_start(map); |
| 1921 | map__fixup_end(map); |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1922 | } |
Arnaldo Carvalho de Melo | 94cb9e3 | 2009-08-06 14:43:17 -0300 | [diff] [blame] | 1923 | |
Arnaldo Carvalho de Melo | a827c87 | 2009-05-28 14:55:19 -0300 | [diff] [blame] | 1924 | return err; |
| 1925 | } |
| 1926 | |
Zhang, Yanmin | a1645ce | 2010-04-19 13:32:50 +0800 | [diff] [blame] | 1927 | static int dso__load_guest_kernel_sym(struct dso *self, struct map *map, |
| 1928 | symbol_filter_t filter) |
| 1929 | { |
| 1930 | int err; |
| 1931 | const char *kallsyms_filename = NULL; |
Arnaldo Carvalho de Melo | 23346f2 | 2010-04-27 21:17:50 -0300 | [diff] [blame] | 1932 | struct machine *machine; |
Zhang, Yanmin | a1645ce | 2010-04-19 13:32:50 +0800 | [diff] [blame] | 1933 | char path[PATH_MAX]; |
| 1934 | |
| 1935 | if (!map->groups) { |
| 1936 | pr_debug("Guest kernel map hasn't the point to groups\n"); |
| 1937 | return -1; |
| 1938 | } |
Arnaldo Carvalho de Melo | 23346f2 | 2010-04-27 21:17:50 -0300 | [diff] [blame] | 1939 | machine = map->groups->machine; |
Zhang, Yanmin | a1645ce | 2010-04-19 13:32:50 +0800 | [diff] [blame] | 1940 | |
Arnaldo Carvalho de Melo | 23346f2 | 2010-04-27 21:17:50 -0300 | [diff] [blame] | 1941 | if (machine__is_default_guest(machine)) { |
Zhang, Yanmin | a1645ce | 2010-04-19 13:32:50 +0800 | [diff] [blame] | 1942 | /* |
| 1943 | * if the user specified a vmlinux filename, use it and only |
| 1944 | * it, reporting errors to the user if it cannot be used. |
| 1945 | * Or use file guest_kallsyms inputted by user on commandline |
| 1946 | */ |
| 1947 | if (symbol_conf.default_guest_vmlinux_name != NULL) { |
| 1948 | err = dso__load_vmlinux(self, map, |
| 1949 | symbol_conf.default_guest_vmlinux_name, filter); |
| 1950 | goto out_try_fixup; |
| 1951 | } |
| 1952 | |
| 1953 | kallsyms_filename = symbol_conf.default_guest_kallsyms; |
| 1954 | if (!kallsyms_filename) |
| 1955 | return -1; |
| 1956 | } else { |
Arnaldo Carvalho de Melo | 23346f2 | 2010-04-27 21:17:50 -0300 | [diff] [blame] | 1957 | sprintf(path, "%s/proc/kallsyms", machine->root_dir); |
Zhang, Yanmin | a1645ce | 2010-04-19 13:32:50 +0800 | [diff] [blame] | 1958 | kallsyms_filename = path; |
| 1959 | } |
| 1960 | |
| 1961 | err = dso__load_kallsyms(self, kallsyms_filename, map, filter); |
| 1962 | if (err > 0) |
| 1963 | pr_debug("Using %s for symbols\n", kallsyms_filename); |
| 1964 | |
| 1965 | out_try_fixup: |
| 1966 | if (err > 0) { |
| 1967 | if (kallsyms_filename != NULL) { |
Arnaldo Carvalho de Melo | 48ea8f5 | 2010-04-27 21:19:05 -0300 | [diff] [blame] | 1968 | machine__mmap_name(machine, path, sizeof(path)); |
Arnaldo Carvalho de Melo | 23346f2 | 2010-04-27 21:17:50 -0300 | [diff] [blame] | 1969 | dso__set_long_name(self, strdup(path)); |
Zhang, Yanmin | a1645ce | 2010-04-19 13:32:50 +0800 | [diff] [blame] | 1970 | } |
| 1971 | map__fixup_start(map); |
| 1972 | map__fixup_end(map); |
| 1973 | } |
| 1974 | |
| 1975 | return err; |
| 1976 | } |
Frederic Weisbecker | cd84c2a | 2009-08-12 10:03:49 +0200 | [diff] [blame] | 1977 | |
Arnaldo Carvalho de Melo | b0da954 | 2009-11-27 16:29:14 -0200 | [diff] [blame] | 1978 | static void dsos__add(struct list_head *head, struct dso *dso) |
Frederic Weisbecker | cd84c2a | 2009-08-12 10:03:49 +0200 | [diff] [blame] | 1979 | { |
Arnaldo Carvalho de Melo | b0da954 | 2009-11-27 16:29:14 -0200 | [diff] [blame] | 1980 | list_add_tail(&dso->node, head); |
Frederic Weisbecker | cd84c2a | 2009-08-12 10:03:49 +0200 | [diff] [blame] | 1981 | } |
| 1982 | |
Arnaldo Carvalho de Melo | b0da954 | 2009-11-27 16:29:14 -0200 | [diff] [blame] | 1983 | static struct dso *dsos__find(struct list_head *head, const char *name) |
Frederic Weisbecker | cd84c2a | 2009-08-12 10:03:49 +0200 | [diff] [blame] | 1984 | { |
| 1985 | struct dso *pos; |
| 1986 | |
Arnaldo Carvalho de Melo | b0da954 | 2009-11-27 16:29:14 -0200 | [diff] [blame] | 1987 | list_for_each_entry(pos, head, node) |
Arnaldo Carvalho de Melo | cf4e5b0 | 2010-01-14 23:45:27 -0200 | [diff] [blame] | 1988 | if (strcmp(pos->long_name, name) == 0) |
Frederic Weisbecker | cd84c2a | 2009-08-12 10:03:49 +0200 | [diff] [blame] | 1989 | return pos; |
| 1990 | return NULL; |
| 1991 | } |
| 1992 | |
Arnaldo Carvalho de Melo | a89e5abe | 2010-01-07 19:59:39 -0200 | [diff] [blame] | 1993 | struct dso *__dsos__findnew(struct list_head *head, const char *name) |
Frederic Weisbecker | cd84c2a | 2009-08-12 10:03:49 +0200 | [diff] [blame] | 1994 | { |
Arnaldo Carvalho de Melo | a89e5abe | 2010-01-07 19:59:39 -0200 | [diff] [blame] | 1995 | struct dso *dso = dsos__find(head, name); |
Frederic Weisbecker | cd84c2a | 2009-08-12 10:03:49 +0200 | [diff] [blame] | 1996 | |
Arnaldo Carvalho de Melo | e420499 | 2009-10-20 14:25:40 -0200 | [diff] [blame] | 1997 | if (!dso) { |
Arnaldo Carvalho de Melo | 00a192b | 2009-10-30 16:28:24 -0200 | [diff] [blame] | 1998 | dso = dso__new(name); |
Arnaldo Carvalho de Melo | cfc10d3 | 2009-11-17 15:40:53 -0200 | [diff] [blame] | 1999 | if (dso != NULL) { |
Arnaldo Carvalho de Melo | a89e5abe | 2010-01-07 19:59:39 -0200 | [diff] [blame] | 2000 | dsos__add(head, dso); |
Arnaldo Carvalho de Melo | cfc10d3 | 2009-11-17 15:40:53 -0200 | [diff] [blame] | 2001 | dso__set_basename(dso); |
| 2002 | } |
Arnaldo Carvalho de Melo | 66bd842 | 2009-10-28 21:51:21 -0200 | [diff] [blame] | 2003 | } |
Frederic Weisbecker | cd84c2a | 2009-08-12 10:03:49 +0200 | [diff] [blame] | 2004 | |
| 2005 | return dso; |
Frederic Weisbecker | cd84c2a | 2009-08-12 10:03:49 +0200 | [diff] [blame] | 2006 | } |
| 2007 | |
Arnaldo Carvalho de Melo | 1f626bc | 2010-05-09 19:57:08 -0300 | [diff] [blame] | 2008 | size_t __dsos__fprintf(struct list_head *head, FILE *fp) |
Frederic Weisbecker | cd84c2a | 2009-08-12 10:03:49 +0200 | [diff] [blame] | 2009 | { |
| 2010 | struct dso *pos; |
Arnaldo Carvalho de Melo | cbf6968 | 2010-04-27 21:22:44 -0300 | [diff] [blame] | 2011 | size_t ret = 0; |
Frederic Weisbecker | cd84c2a | 2009-08-12 10:03:49 +0200 | [diff] [blame] | 2012 | |
Arnaldo Carvalho de Melo | 95011c6 | 2009-11-27 16:29:20 -0200 | [diff] [blame] | 2013 | list_for_each_entry(pos, head, node) { |
| 2014 | int i; |
| 2015 | for (i = 0; i < MAP__NR_TYPES; ++i) |
Arnaldo Carvalho de Melo | cbf6968 | 2010-04-27 21:22:44 -0300 | [diff] [blame] | 2016 | ret += dso__fprintf(pos, i, fp); |
Arnaldo Carvalho de Melo | 95011c6 | 2009-11-27 16:29:20 -0200 | [diff] [blame] | 2017 | } |
Arnaldo Carvalho de Melo | cbf6968 | 2010-04-27 21:22:44 -0300 | [diff] [blame] | 2018 | |
| 2019 | return ret; |
Frederic Weisbecker | cd84c2a | 2009-08-12 10:03:49 +0200 | [diff] [blame] | 2020 | } |
| 2021 | |
Arnaldo Carvalho de Melo | cbf6968 | 2010-04-27 21:22:44 -0300 | [diff] [blame] | 2022 | size_t machines__fprintf_dsos(struct rb_root *self, FILE *fp) |
Arnaldo Carvalho de Melo | b0da954 | 2009-11-27 16:29:14 -0200 | [diff] [blame] | 2023 | { |
Zhang, Yanmin | a1645ce | 2010-04-19 13:32:50 +0800 | [diff] [blame] | 2024 | struct rb_node *nd; |
Arnaldo Carvalho de Melo | cbf6968 | 2010-04-27 21:22:44 -0300 | [diff] [blame] | 2025 | size_t ret = 0; |
Zhang, Yanmin | a1645ce | 2010-04-19 13:32:50 +0800 | [diff] [blame] | 2026 | |
Arnaldo Carvalho de Melo | cbf6968 | 2010-04-27 21:22:44 -0300 | [diff] [blame] | 2027 | for (nd = rb_first(self); nd; nd = rb_next(nd)) { |
Arnaldo Carvalho de Melo | 23346f2 | 2010-04-27 21:17:50 -0300 | [diff] [blame] | 2028 | struct machine *pos = rb_entry(nd, struct machine, rb_node); |
Arnaldo Carvalho de Melo | cbf6968 | 2010-04-27 21:22:44 -0300 | [diff] [blame] | 2029 | ret += __dsos__fprintf(&pos->kernel_dsos, fp); |
| 2030 | ret += __dsos__fprintf(&pos->user_dsos, fp); |
Zhang, Yanmin | a1645ce | 2010-04-19 13:32:50 +0800 | [diff] [blame] | 2031 | } |
Arnaldo Carvalho de Melo | cbf6968 | 2010-04-27 21:22:44 -0300 | [diff] [blame] | 2032 | |
| 2033 | return ret; |
Arnaldo Carvalho de Melo | b0da954 | 2009-11-27 16:29:14 -0200 | [diff] [blame] | 2034 | } |
| 2035 | |
Arnaldo Carvalho de Melo | 88d3d9b7 | 2010-01-14 23:45:30 -0200 | [diff] [blame] | 2036 | static size_t __dsos__fprintf_buildid(struct list_head *head, FILE *fp, |
| 2037 | bool with_hits) |
Arnaldo Carvalho de Melo | 9e03eb2 | 2009-11-16 16:32:44 -0200 | [diff] [blame] | 2038 | { |
| 2039 | struct dso *pos; |
| 2040 | size_t ret = 0; |
| 2041 | |
Arnaldo Carvalho de Melo | b0da954 | 2009-11-27 16:29:14 -0200 | [diff] [blame] | 2042 | list_for_each_entry(pos, head, node) { |
Arnaldo Carvalho de Melo | 88d3d9b7 | 2010-01-14 23:45:30 -0200 | [diff] [blame] | 2043 | if (with_hits && !pos->hit) |
| 2044 | continue; |
Arnaldo Carvalho de Melo | 9e03eb2 | 2009-11-16 16:32:44 -0200 | [diff] [blame] | 2045 | ret += dso__fprintf_buildid(pos, fp); |
Arnaldo Carvalho de Melo | 1124ba7 | 2009-11-16 21:45:25 -0200 | [diff] [blame] | 2046 | ret += fprintf(fp, " %s\n", pos->long_name); |
Arnaldo Carvalho de Melo | 9e03eb2 | 2009-11-16 16:32:44 -0200 | [diff] [blame] | 2047 | } |
| 2048 | return ret; |
| 2049 | } |
| 2050 | |
Arnaldo Carvalho de Melo | f869097 | 2010-05-19 13:41:23 -0300 | [diff] [blame] | 2051 | size_t machine__fprintf_dsos_buildid(struct machine *self, FILE *fp, bool with_hits) |
| 2052 | { |
| 2053 | return __dsos__fprintf_buildid(&self->kernel_dsos, fp, with_hits) + |
| 2054 | __dsos__fprintf_buildid(&self->user_dsos, fp, with_hits); |
| 2055 | } |
| 2056 | |
Arnaldo Carvalho de Melo | cbf6968 | 2010-04-27 21:22:44 -0300 | [diff] [blame] | 2057 | size_t machines__fprintf_dsos_buildid(struct rb_root *self, FILE *fp, bool with_hits) |
Arnaldo Carvalho de Melo | b0da954 | 2009-11-27 16:29:14 -0200 | [diff] [blame] | 2058 | { |
Zhang, Yanmin | a1645ce | 2010-04-19 13:32:50 +0800 | [diff] [blame] | 2059 | struct rb_node *nd; |
| 2060 | size_t ret = 0; |
| 2061 | |
Arnaldo Carvalho de Melo | cbf6968 | 2010-04-27 21:22:44 -0300 | [diff] [blame] | 2062 | for (nd = rb_first(self); nd; nd = rb_next(nd)) { |
Arnaldo Carvalho de Melo | 23346f2 | 2010-04-27 21:17:50 -0300 | [diff] [blame] | 2063 | struct machine *pos = rb_entry(nd, struct machine, rb_node); |
Arnaldo Carvalho de Melo | f869097 | 2010-05-19 13:41:23 -0300 | [diff] [blame] | 2064 | ret += machine__fprintf_dsos_buildid(pos, fp, with_hits); |
Zhang, Yanmin | a1645ce | 2010-04-19 13:32:50 +0800 | [diff] [blame] | 2065 | } |
| 2066 | return ret; |
Arnaldo Carvalho de Melo | b0da954 | 2009-11-27 16:29:14 -0200 | [diff] [blame] | 2067 | } |
| 2068 | |
Arnaldo Carvalho de Melo | fd1d908 | 2010-01-27 21:05:51 -0200 | [diff] [blame] | 2069 | struct dso *dso__new_kernel(const char *name) |
| 2070 | { |
| 2071 | struct dso *self = dso__new(name ?: "[kernel.kallsyms]"); |
| 2072 | |
| 2073 | if (self != NULL) { |
Arnaldo Carvalho de Melo | b63be8d | 2010-03-15 15:03:50 -0300 | [diff] [blame] | 2074 | dso__set_short_name(self, "[kernel]"); |
Zhang, Yanmin | a1645ce | 2010-04-19 13:32:50 +0800 | [diff] [blame] | 2075 | self->kernel = DSO_TYPE_KERNEL; |
Arnaldo Carvalho de Melo | fd1d908 | 2010-01-27 21:05:51 -0200 | [diff] [blame] | 2076 | } |
| 2077 | |
| 2078 | return self; |
| 2079 | } |
| 2080 | |
Arnaldo Carvalho de Melo | 23346f2 | 2010-04-27 21:17:50 -0300 | [diff] [blame] | 2081 | static struct dso *dso__new_guest_kernel(struct machine *machine, |
Zhang, Yanmin | a1645ce | 2010-04-19 13:32:50 +0800 | [diff] [blame] | 2082 | const char *name) |
Arnaldo Carvalho de Melo | fd1d908 | 2010-01-27 21:05:51 -0200 | [diff] [blame] | 2083 | { |
Arnaldo Carvalho de Melo | 48ea8f5 | 2010-04-27 21:19:05 -0300 | [diff] [blame] | 2084 | char bf[PATH_MAX]; |
| 2085 | struct dso *self = dso__new(name ?: machine__mmap_name(machine, bf, sizeof(bf))); |
Zhang, Yanmin | a1645ce | 2010-04-19 13:32:50 +0800 | [diff] [blame] | 2086 | |
Zhang, Yanmin | a1645ce | 2010-04-19 13:32:50 +0800 | [diff] [blame] | 2087 | if (self != NULL) { |
| 2088 | dso__set_short_name(self, "[guest.kernel]"); |
| 2089 | self->kernel = DSO_TYPE_GUEST_KERNEL; |
| 2090 | } |
| 2091 | |
| 2092 | return self; |
| 2093 | } |
| 2094 | |
Arnaldo Carvalho de Melo | 23346f2 | 2010-04-27 21:17:50 -0300 | [diff] [blame] | 2095 | void dso__read_running_kernel_build_id(struct dso *self, struct machine *machine) |
Zhang, Yanmin | a1645ce | 2010-04-19 13:32:50 +0800 | [diff] [blame] | 2096 | { |
| 2097 | char path[PATH_MAX]; |
| 2098 | |
Arnaldo Carvalho de Melo | 23346f2 | 2010-04-27 21:17:50 -0300 | [diff] [blame] | 2099 | if (machine__is_default_guest(machine)) |
Zhang, Yanmin | a1645ce | 2010-04-19 13:32:50 +0800 | [diff] [blame] | 2100 | return; |
Arnaldo Carvalho de Melo | 23346f2 | 2010-04-27 21:17:50 -0300 | [diff] [blame] | 2101 | sprintf(path, "%s/sys/kernel/notes", machine->root_dir); |
Zhang, Yanmin | a1645ce | 2010-04-19 13:32:50 +0800 | [diff] [blame] | 2102 | if (sysfs__read_build_id(path, self->build_id, |
Arnaldo Carvalho de Melo | fd1d908 | 2010-01-27 21:05:51 -0200 | [diff] [blame] | 2103 | sizeof(self->build_id)) == 0) |
| 2104 | self->has_build_id = true; |
| 2105 | } |
| 2106 | |
Arnaldo Carvalho de Melo | 5c0541d | 2010-04-29 15:25:23 -0300 | [diff] [blame] | 2107 | static struct dso *machine__create_kernel(struct machine *self) |
Frederic Weisbecker | cd84c2a | 2009-08-12 10:03:49 +0200 | [diff] [blame] | 2108 | { |
Zhang, Yanmin | a1645ce | 2010-04-19 13:32:50 +0800 | [diff] [blame] | 2109 | const char *vmlinux_name = NULL; |
| 2110 | struct dso *kernel; |
Frederic Weisbecker | cd84c2a | 2009-08-12 10:03:49 +0200 | [diff] [blame] | 2111 | |
Arnaldo Carvalho de Melo | 5c0541d | 2010-04-29 15:25:23 -0300 | [diff] [blame] | 2112 | if (machine__is_host(self)) { |
Zhang, Yanmin | a1645ce | 2010-04-19 13:32:50 +0800 | [diff] [blame] | 2113 | vmlinux_name = symbol_conf.vmlinux_name; |
| 2114 | kernel = dso__new_kernel(vmlinux_name); |
| 2115 | } else { |
Arnaldo Carvalho de Melo | 5c0541d | 2010-04-29 15:25:23 -0300 | [diff] [blame] | 2116 | if (machine__is_default_guest(self)) |
Zhang, Yanmin | a1645ce | 2010-04-19 13:32:50 +0800 | [diff] [blame] | 2117 | vmlinux_name = symbol_conf.default_guest_vmlinux_name; |
Arnaldo Carvalho de Melo | 5c0541d | 2010-04-29 15:25:23 -0300 | [diff] [blame] | 2118 | kernel = dso__new_guest_kernel(self, vmlinux_name); |
Arnaldo Carvalho de Melo | 8d92c02 | 2010-02-03 16:52:02 -0200 | [diff] [blame] | 2119 | } |
Frederic Weisbecker | cd84c2a | 2009-08-12 10:03:49 +0200 | [diff] [blame] | 2120 | |
Zhang, Yanmin | a1645ce | 2010-04-19 13:32:50 +0800 | [diff] [blame] | 2121 | if (kernel != NULL) { |
Arnaldo Carvalho de Melo | 5c0541d | 2010-04-29 15:25:23 -0300 | [diff] [blame] | 2122 | dso__read_running_kernel_build_id(kernel, self); |
| 2123 | dsos__add(&self->kernel_dsos, kernel); |
Zhang, Yanmin | a1645ce | 2010-04-19 13:32:50 +0800 | [diff] [blame] | 2124 | } |
Arnaldo Carvalho de Melo | f1dfa0b | 2009-12-11 14:50:39 -0200 | [diff] [blame] | 2125 | return kernel; |
Arnaldo Carvalho de Melo | f1dfa0b | 2009-12-11 14:50:39 -0200 | [diff] [blame] | 2126 | } |
| 2127 | |
Arnaldo Carvalho de Melo | d28c622 | 2010-04-27 21:20:43 -0300 | [diff] [blame] | 2128 | int __machine__create_kernel_maps(struct machine *self, struct dso *kernel) |
Arnaldo Carvalho de Melo | f1dfa0b | 2009-12-11 14:50:39 -0200 | [diff] [blame] | 2129 | { |
Arnaldo Carvalho de Melo | de17648 | 2010-01-04 16:19:29 -0200 | [diff] [blame] | 2130 | enum map_type type; |
Arnaldo Carvalho de Melo | f1dfa0b | 2009-12-11 14:50:39 -0200 | [diff] [blame] | 2131 | |
Arnaldo Carvalho de Melo | de17648 | 2010-01-04 16:19:29 -0200 | [diff] [blame] | 2132 | for (type = 0; type < MAP__NR_TYPES; ++type) { |
Arnaldo Carvalho de Melo | 9de89fe | 2010-02-03 16:52:00 -0200 | [diff] [blame] | 2133 | struct kmap *kmap; |
| 2134 | |
Arnaldo Carvalho de Melo | d28c622 | 2010-04-27 21:20:43 -0300 | [diff] [blame] | 2135 | self->vmlinux_maps[type] = map__new2(0, kernel, type); |
| 2136 | if (self->vmlinux_maps[type] == NULL) |
Arnaldo Carvalho de Melo | de17648 | 2010-01-04 16:19:29 -0200 | [diff] [blame] | 2137 | return -1; |
Arnaldo Carvalho de Melo | f1dfa0b | 2009-12-11 14:50:39 -0200 | [diff] [blame] | 2138 | |
Arnaldo Carvalho de Melo | d28c622 | 2010-04-27 21:20:43 -0300 | [diff] [blame] | 2139 | self->vmlinux_maps[type]->map_ip = |
| 2140 | self->vmlinux_maps[type]->unmap_ip = identity__map_ip; |
Arnaldo Carvalho de Melo | 9de89fe | 2010-02-03 16:52:00 -0200 | [diff] [blame] | 2141 | |
Arnaldo Carvalho de Melo | d28c622 | 2010-04-27 21:20:43 -0300 | [diff] [blame] | 2142 | kmap = map__kmap(self->vmlinux_maps[type]); |
| 2143 | kmap->kmaps = &self->kmaps; |
| 2144 | map_groups__insert(&self->kmaps, self->vmlinux_maps[type]); |
Arnaldo Carvalho de Melo | f1dfa0b | 2009-12-11 14:50:39 -0200 | [diff] [blame] | 2145 | } |
| 2146 | |
Arnaldo Carvalho de Melo | f1dfa0b | 2009-12-11 14:50:39 -0200 | [diff] [blame] | 2147 | return 0; |
Arnaldo Carvalho de Melo | 2446042 | 2009-11-18 20:20:53 -0200 | [diff] [blame] | 2148 | } |
| 2149 | |
Arnaldo Carvalho de Melo | 076c6e45 | 2010-08-02 18:18:28 -0300 | [diff] [blame] | 2150 | void machine__destroy_kernel_maps(struct machine *self) |
| 2151 | { |
| 2152 | enum map_type type; |
| 2153 | |
| 2154 | for (type = 0; type < MAP__NR_TYPES; ++type) { |
| 2155 | struct kmap *kmap; |
| 2156 | |
| 2157 | if (self->vmlinux_maps[type] == NULL) |
| 2158 | continue; |
| 2159 | |
| 2160 | kmap = map__kmap(self->vmlinux_maps[type]); |
| 2161 | map_groups__remove(&self->kmaps, self->vmlinux_maps[type]); |
| 2162 | if (kmap->ref_reloc_sym) { |
| 2163 | /* |
| 2164 | * ref_reloc_sym is shared among all maps, so free just |
| 2165 | * on one of them. |
| 2166 | */ |
| 2167 | if (type == MAP__FUNCTION) { |
| 2168 | free((char *)kmap->ref_reloc_sym->name); |
| 2169 | kmap->ref_reloc_sym->name = NULL; |
| 2170 | free(kmap->ref_reloc_sym); |
| 2171 | } |
| 2172 | kmap->ref_reloc_sym = NULL; |
| 2173 | } |
| 2174 | |
| 2175 | map__delete(self->vmlinux_maps[type]); |
| 2176 | self->vmlinux_maps[type] = NULL; |
| 2177 | } |
| 2178 | } |
| 2179 | |
Arnaldo Carvalho de Melo | 5c0541d | 2010-04-29 15:25:23 -0300 | [diff] [blame] | 2180 | int machine__create_kernel_maps(struct machine *self) |
| 2181 | { |
| 2182 | struct dso *kernel = machine__create_kernel(self); |
| 2183 | |
| 2184 | if (kernel == NULL || |
| 2185 | __machine__create_kernel_maps(self, kernel) < 0) |
| 2186 | return -1; |
| 2187 | |
| 2188 | if (symbol_conf.use_modules && machine__create_modules(self) < 0) |
| 2189 | pr_debug("Problems creating module maps, continuing anyway...\n"); |
| 2190 | /* |
| 2191 | * Now that we have all the maps created, just set the ->end of them: |
| 2192 | */ |
| 2193 | map_groups__fixup_end(&self->kmaps); |
| 2194 | return 0; |
| 2195 | } |
| 2196 | |
Arnaldo Carvalho de Melo | cc612d8 | 2009-11-23 16:39:10 -0200 | [diff] [blame] | 2197 | static void vmlinux_path__exit(void) |
Arnaldo Carvalho de Melo | 2446042 | 2009-11-18 20:20:53 -0200 | [diff] [blame] | 2198 | { |
Arnaldo Carvalho de Melo | cc612d8 | 2009-11-23 16:39:10 -0200 | [diff] [blame] | 2199 | while (--vmlinux_path__nr_entries >= 0) { |
| 2200 | free(vmlinux_path[vmlinux_path__nr_entries]); |
| 2201 | vmlinux_path[vmlinux_path__nr_entries] = NULL; |
| 2202 | } |
| 2203 | |
| 2204 | free(vmlinux_path); |
| 2205 | vmlinux_path = NULL; |
| 2206 | } |
| 2207 | |
| 2208 | static int vmlinux_path__init(void) |
| 2209 | { |
| 2210 | struct utsname uts; |
| 2211 | char bf[PATH_MAX]; |
| 2212 | |
| 2213 | if (uname(&uts) < 0) |
Arnaldo Carvalho de Melo | 2446042 | 2009-11-18 20:20:53 -0200 | [diff] [blame] | 2214 | return -1; |
| 2215 | |
Arnaldo Carvalho de Melo | cc612d8 | 2009-11-23 16:39:10 -0200 | [diff] [blame] | 2216 | vmlinux_path = malloc(sizeof(char *) * 5); |
| 2217 | if (vmlinux_path == NULL) |
| 2218 | return -1; |
| 2219 | |
| 2220 | vmlinux_path[vmlinux_path__nr_entries] = strdup("vmlinux"); |
| 2221 | if (vmlinux_path[vmlinux_path__nr_entries] == NULL) |
| 2222 | goto out_fail; |
| 2223 | ++vmlinux_path__nr_entries; |
| 2224 | vmlinux_path[vmlinux_path__nr_entries] = strdup("/boot/vmlinux"); |
| 2225 | if (vmlinux_path[vmlinux_path__nr_entries] == NULL) |
| 2226 | goto out_fail; |
| 2227 | ++vmlinux_path__nr_entries; |
| 2228 | snprintf(bf, sizeof(bf), "/boot/vmlinux-%s", uts.release); |
| 2229 | vmlinux_path[vmlinux_path__nr_entries] = strdup(bf); |
| 2230 | if (vmlinux_path[vmlinux_path__nr_entries] == NULL) |
| 2231 | goto out_fail; |
| 2232 | ++vmlinux_path__nr_entries; |
| 2233 | snprintf(bf, sizeof(bf), "/lib/modules/%s/build/vmlinux", uts.release); |
| 2234 | vmlinux_path[vmlinux_path__nr_entries] = strdup(bf); |
| 2235 | if (vmlinux_path[vmlinux_path__nr_entries] == NULL) |
| 2236 | goto out_fail; |
| 2237 | ++vmlinux_path__nr_entries; |
| 2238 | snprintf(bf, sizeof(bf), "/usr/lib/debug/lib/modules/%s/vmlinux", |
| 2239 | uts.release); |
| 2240 | vmlinux_path[vmlinux_path__nr_entries] = strdup(bf); |
| 2241 | if (vmlinux_path[vmlinux_path__nr_entries] == NULL) |
| 2242 | goto out_fail; |
| 2243 | ++vmlinux_path__nr_entries; |
| 2244 | |
| 2245 | return 0; |
| 2246 | |
| 2247 | out_fail: |
| 2248 | vmlinux_path__exit(); |
| 2249 | return -1; |
| 2250 | } |
| 2251 | |
Arnaldo Carvalho de Melo | 5ad90e4 | 2010-05-26 13:26:02 -0300 | [diff] [blame] | 2252 | size_t machine__fprintf_vmlinux_path(struct machine *self, FILE *fp) |
Arnaldo Carvalho de Melo | b0a9ab6 | 2010-03-15 11:46:58 -0300 | [diff] [blame] | 2253 | { |
| 2254 | int i; |
| 2255 | size_t printed = 0; |
Arnaldo Carvalho de Melo | 5ad90e4 | 2010-05-26 13:26:02 -0300 | [diff] [blame] | 2256 | struct dso *kdso = self->vmlinux_maps[MAP__FUNCTION]->dso; |
| 2257 | |
| 2258 | if (kdso->has_build_id) { |
| 2259 | char filename[PATH_MAX]; |
| 2260 | if (dso__build_id_filename(kdso, filename, sizeof(filename))) |
| 2261 | printed += fprintf(fp, "[0] %s\n", filename); |
| 2262 | } |
Arnaldo Carvalho de Melo | b0a9ab6 | 2010-03-15 11:46:58 -0300 | [diff] [blame] | 2263 | |
| 2264 | for (i = 0; i < vmlinux_path__nr_entries; ++i) |
Arnaldo Carvalho de Melo | 5ad90e4 | 2010-05-26 13:26:02 -0300 | [diff] [blame] | 2265 | printed += fprintf(fp, "[%d] %s\n", |
| 2266 | i + kdso->has_build_id, vmlinux_path[i]); |
Arnaldo Carvalho de Melo | b0a9ab6 | 2010-03-15 11:46:58 -0300 | [diff] [blame] | 2267 | |
| 2268 | return printed; |
| 2269 | } |
| 2270 | |
Arnaldo Carvalho de Melo | 655000e | 2009-12-15 20:04:40 -0200 | [diff] [blame] | 2271 | static int setup_list(struct strlist **list, const char *list_str, |
| 2272 | const char *list_name) |
| 2273 | { |
| 2274 | if (list_str == NULL) |
| 2275 | return 0; |
| 2276 | |
| 2277 | *list = strlist__new(true, list_str); |
| 2278 | if (!*list) { |
| 2279 | pr_err("problems parsing %s list\n", list_name); |
| 2280 | return -1; |
| 2281 | } |
| 2282 | return 0; |
| 2283 | } |
| 2284 | |
Arnaldo Carvalho de Melo | 75be6cf | 2009-12-15 20:04:39 -0200 | [diff] [blame] | 2285 | int symbol__init(void) |
Arnaldo Carvalho de Melo | cc612d8 | 2009-11-23 16:39:10 -0200 | [diff] [blame] | 2286 | { |
Jovi Zhang | 85e00b5 | 2010-09-09 13:30:59 -0300 | [diff] [blame] | 2287 | if (symbol_conf.initialized) |
| 2288 | return 0; |
| 2289 | |
Arnaldo Carvalho de Melo | 95011c6 | 2009-11-27 16:29:20 -0200 | [diff] [blame] | 2290 | elf_version(EV_CURRENT); |
Arnaldo Carvalho de Melo | 75be6cf | 2009-12-15 20:04:39 -0200 | [diff] [blame] | 2291 | if (symbol_conf.sort_by_name) |
| 2292 | symbol_conf.priv_size += (sizeof(struct symbol_name_rb_node) - |
| 2293 | sizeof(struct symbol)); |
Arnaldo Carvalho de Melo | b32d133 | 2009-11-24 12:05:15 -0200 | [diff] [blame] | 2294 | |
Arnaldo Carvalho de Melo | 75be6cf | 2009-12-15 20:04:39 -0200 | [diff] [blame] | 2295 | if (symbol_conf.try_vmlinux_path && vmlinux_path__init() < 0) |
Arnaldo Carvalho de Melo | cc612d8 | 2009-11-23 16:39:10 -0200 | [diff] [blame] | 2296 | return -1; |
| 2297 | |
Arnaldo Carvalho de Melo | c410a33 | 2009-12-15 20:04:41 -0200 | [diff] [blame] | 2298 | if (symbol_conf.field_sep && *symbol_conf.field_sep == '.') { |
| 2299 | pr_err("'.' is the only non valid --field-separator argument\n"); |
| 2300 | return -1; |
| 2301 | } |
| 2302 | |
Arnaldo Carvalho de Melo | 655000e | 2009-12-15 20:04:40 -0200 | [diff] [blame] | 2303 | if (setup_list(&symbol_conf.dso_list, |
| 2304 | symbol_conf.dso_list_str, "dso") < 0) |
| 2305 | return -1; |
| 2306 | |
| 2307 | if (setup_list(&symbol_conf.comm_list, |
| 2308 | symbol_conf.comm_list_str, "comm") < 0) |
| 2309 | goto out_free_dso_list; |
| 2310 | |
| 2311 | if (setup_list(&symbol_conf.sym_list, |
| 2312 | symbol_conf.sym_list_str, "symbol") < 0) |
| 2313 | goto out_free_comm_list; |
| 2314 | |
Jovi Zhang | 85e00b5 | 2010-09-09 13:30:59 -0300 | [diff] [blame] | 2315 | symbol_conf.initialized = true; |
Arnaldo Carvalho de Melo | 4aa6563 | 2009-12-13 19:50:29 -0200 | [diff] [blame] | 2316 | return 0; |
Arnaldo Carvalho de Melo | 655000e | 2009-12-15 20:04:40 -0200 | [diff] [blame] | 2317 | |
| 2318 | out_free_dso_list: |
| 2319 | strlist__delete(symbol_conf.dso_list); |
| 2320 | out_free_comm_list: |
| 2321 | strlist__delete(symbol_conf.comm_list); |
| 2322 | return -1; |
Arnaldo Carvalho de Melo | 4aa6563 | 2009-12-13 19:50:29 -0200 | [diff] [blame] | 2323 | } |
Arnaldo Carvalho de Melo | cc612d8 | 2009-11-23 16:39:10 -0200 | [diff] [blame] | 2324 | |
Arnaldo Carvalho de Melo | d65a458 | 2010-07-30 18:31:28 -0300 | [diff] [blame] | 2325 | void symbol__exit(void) |
| 2326 | { |
Jovi Zhang | 85e00b5 | 2010-09-09 13:30:59 -0300 | [diff] [blame] | 2327 | if (!symbol_conf.initialized) |
| 2328 | return; |
Arnaldo Carvalho de Melo | d65a458 | 2010-07-30 18:31:28 -0300 | [diff] [blame] | 2329 | strlist__delete(symbol_conf.sym_list); |
| 2330 | strlist__delete(symbol_conf.dso_list); |
| 2331 | strlist__delete(symbol_conf.comm_list); |
| 2332 | vmlinux_path__exit(); |
| 2333 | 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] | 2334 | symbol_conf.initialized = false; |
Arnaldo Carvalho de Melo | d65a458 | 2010-07-30 18:31:28 -0300 | [diff] [blame] | 2335 | } |
| 2336 | |
Arnaldo Carvalho de Melo | d28c622 | 2010-04-27 21:20:43 -0300 | [diff] [blame] | 2337 | int machines__create_kernel_maps(struct rb_root *self, pid_t pid) |
Arnaldo Carvalho de Melo | 4aa6563 | 2009-12-13 19:50:29 -0200 | [diff] [blame] | 2338 | { |
Arnaldo Carvalho de Melo | d28c622 | 2010-04-27 21:20:43 -0300 | [diff] [blame] | 2339 | struct machine *machine = machines__findnew(self, pid); |
Arnaldo Carvalho de Melo | 9de89fe | 2010-02-03 16:52:00 -0200 | [diff] [blame] | 2340 | |
Arnaldo Carvalho de Melo | 23346f2 | 2010-04-27 21:17:50 -0300 | [diff] [blame] | 2341 | if (machine == NULL) |
Zhang, Yanmin | a1645ce | 2010-04-19 13:32:50 +0800 | [diff] [blame] | 2342 | return -1; |
Arnaldo Carvalho de Melo | 4aa6563 | 2009-12-13 19:50:29 -0200 | [diff] [blame] | 2343 | |
Arnaldo Carvalho de Melo | 5c0541d | 2010-04-29 15:25:23 -0300 | [diff] [blame] | 2344 | return machine__create_kernel_maps(machine); |
Frederic Weisbecker | cd84c2a | 2009-08-12 10:03:49 +0200 | [diff] [blame] | 2345 | } |
Arnaldo Carvalho de Melo | 5aab621 | 2010-03-25 19:59:00 -0300 | [diff] [blame] | 2346 | |
| 2347 | static int hex(char ch) |
| 2348 | { |
| 2349 | if ((ch >= '0') && (ch <= '9')) |
| 2350 | return ch - '0'; |
| 2351 | if ((ch >= 'a') && (ch <= 'f')) |
| 2352 | return ch - 'a' + 10; |
| 2353 | if ((ch >= 'A') && (ch <= 'F')) |
| 2354 | return ch - 'A' + 10; |
| 2355 | return -1; |
| 2356 | } |
| 2357 | |
| 2358 | /* |
| 2359 | * While we find nice hex chars, build a long_val. |
| 2360 | * Return number of chars processed. |
| 2361 | */ |
| 2362 | int hex2u64(const char *ptr, u64 *long_val) |
| 2363 | { |
| 2364 | const char *p = ptr; |
| 2365 | *long_val = 0; |
| 2366 | |
| 2367 | while (*p) { |
| 2368 | const int hex_val = hex(*p); |
| 2369 | |
| 2370 | if (hex_val < 0) |
| 2371 | break; |
| 2372 | |
| 2373 | *long_val = (*long_val << 4) | hex_val; |
| 2374 | p++; |
| 2375 | } |
| 2376 | |
| 2377 | return p - ptr; |
| 2378 | } |
| 2379 | |
| 2380 | char *strxfrchar(char *s, char from, char to) |
| 2381 | { |
| 2382 | char *p = s; |
| 2383 | |
| 2384 | while ((p = strchr(p, from)) != NULL) |
| 2385 | *p++ = to; |
| 2386 | |
| 2387 | return s; |
| 2388 | } |
Zhang, Yanmin | a1645ce | 2010-04-19 13:32:50 +0800 | [diff] [blame] | 2389 | |
Arnaldo Carvalho de Melo | d28c622 | 2010-04-27 21:20:43 -0300 | [diff] [blame] | 2390 | int machines__create_guest_kernel_maps(struct rb_root *self) |
Zhang, Yanmin | a1645ce | 2010-04-19 13:32:50 +0800 | [diff] [blame] | 2391 | { |
| 2392 | int ret = 0; |
| 2393 | struct dirent **namelist = NULL; |
| 2394 | int i, items = 0; |
| 2395 | char path[PATH_MAX]; |
| 2396 | pid_t pid; |
| 2397 | |
| 2398 | if (symbol_conf.default_guest_vmlinux_name || |
| 2399 | symbol_conf.default_guest_modules || |
| 2400 | symbol_conf.default_guest_kallsyms) { |
Arnaldo Carvalho de Melo | d28c622 | 2010-04-27 21:20:43 -0300 | [diff] [blame] | 2401 | machines__create_kernel_maps(self, DEFAULT_GUEST_KERNEL_ID); |
Zhang, Yanmin | a1645ce | 2010-04-19 13:32:50 +0800 | [diff] [blame] | 2402 | } |
| 2403 | |
| 2404 | if (symbol_conf.guestmount) { |
| 2405 | items = scandir(symbol_conf.guestmount, &namelist, NULL, NULL); |
| 2406 | if (items <= 0) |
| 2407 | return -ENOENT; |
| 2408 | for (i = 0; i < items; i++) { |
| 2409 | if (!isdigit(namelist[i]->d_name[0])) { |
| 2410 | /* Filter out . and .. */ |
| 2411 | continue; |
| 2412 | } |
| 2413 | pid = atoi(namelist[i]->d_name); |
| 2414 | sprintf(path, "%s/%s/proc/kallsyms", |
| 2415 | symbol_conf.guestmount, |
| 2416 | namelist[i]->d_name); |
| 2417 | ret = access(path, R_OK); |
| 2418 | if (ret) { |
| 2419 | pr_debug("Can't access file %s\n", path); |
| 2420 | goto failure; |
| 2421 | } |
Arnaldo Carvalho de Melo | d28c622 | 2010-04-27 21:20:43 -0300 | [diff] [blame] | 2422 | machines__create_kernel_maps(self, pid); |
Zhang, Yanmin | a1645ce | 2010-04-19 13:32:50 +0800 | [diff] [blame] | 2423 | } |
| 2424 | failure: |
| 2425 | free(namelist); |
| 2426 | } |
| 2427 | |
| 2428 | return ret; |
| 2429 | } |
Arnaldo Carvalho de Melo | 5c0541d | 2010-04-29 15:25:23 -0300 | [diff] [blame] | 2430 | |
Arnaldo Carvalho de Melo | 076c6e45 | 2010-08-02 18:18:28 -0300 | [diff] [blame] | 2431 | void machines__destroy_guest_kernel_maps(struct rb_root *self) |
| 2432 | { |
| 2433 | struct rb_node *next = rb_first(self); |
| 2434 | |
| 2435 | while (next) { |
| 2436 | struct machine *pos = rb_entry(next, struct machine, rb_node); |
| 2437 | |
| 2438 | next = rb_next(&pos->rb_node); |
| 2439 | rb_erase(&pos->rb_node, self); |
| 2440 | machine__delete(pos); |
| 2441 | } |
| 2442 | } |
| 2443 | |
Arnaldo Carvalho de Melo | 5c0541d | 2010-04-29 15:25:23 -0300 | [diff] [blame] | 2444 | int machine__load_kallsyms(struct machine *self, const char *filename, |
| 2445 | enum map_type type, symbol_filter_t filter) |
| 2446 | { |
| 2447 | struct map *map = self->vmlinux_maps[type]; |
| 2448 | int ret = dso__load_kallsyms(map->dso, filename, map, filter); |
| 2449 | |
| 2450 | if (ret > 0) { |
| 2451 | dso__set_loaded(map->dso, type); |
| 2452 | /* |
| 2453 | * Since /proc/kallsyms will have multiple sessions for the |
| 2454 | * kernel, with modules between them, fixup the end of all |
| 2455 | * sections. |
| 2456 | */ |
| 2457 | __map_groups__fixup_end(&self->kmaps, type); |
| 2458 | } |
| 2459 | |
| 2460 | return ret; |
| 2461 | } |
| 2462 | |
| 2463 | int machine__load_vmlinux_path(struct machine *self, enum map_type type, |
| 2464 | symbol_filter_t filter) |
| 2465 | { |
| 2466 | struct map *map = self->vmlinux_maps[type]; |
| 2467 | int ret = dso__load_vmlinux_path(map->dso, map, filter); |
| 2468 | |
| 2469 | if (ret > 0) { |
| 2470 | dso__set_loaded(map->dso, type); |
| 2471 | map__reloc_vmlinux(map); |
| 2472 | } |
| 2473 | |
| 2474 | return ret; |
| 2475 | } |