Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 1 | #include "util.h" |
| 2 | #include "../perf.h" |
Arnaldo Carvalho de Melo | a0055ae | 2009-06-01 17:50:19 -0300 | [diff] [blame] | 3 | #include "string.h" |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 4 | #include "symbol.h" |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 5 | #include "thread.h" |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 6 | |
Frederic Weisbecker | 8f28827a | 2009-08-16 22:05:48 +0200 | [diff] [blame] | 7 | #include "debug.h" |
| 8 | |
Arnaldo Carvalho de Melo | b32d133 | 2009-11-24 12:05:15 -0200 | [diff] [blame] | 9 | #include <asm/bug.h> |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 10 | #include <libelf.h> |
| 11 | #include <gelf.h> |
| 12 | #include <elf.h> |
Arnaldo Carvalho de Melo | f1617b4 | 2009-11-18 20:20:52 -0200 | [diff] [blame] | 13 | #include <limits.h> |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 14 | #include <sys/utsname.h> |
Peter Zijlstra | 2cdbc46 | 2009-08-05 14:05:16 +0200 | [diff] [blame] | 15 | |
Arnaldo Carvalho de Melo | c12e15e | 2009-11-21 14:31:25 -0200 | [diff] [blame] | 16 | #ifndef NT_GNU_BUILD_ID |
| 17 | #define NT_GNU_BUILD_ID 3 |
| 18 | #endif |
| 19 | |
Arnaldo Carvalho de Melo | 94cb9e3 | 2009-08-06 14:43:17 -0300 | [diff] [blame] | 20 | enum dso_origin { |
| 21 | DSO__ORIG_KERNEL = 0, |
| 22 | DSO__ORIG_JAVA_JIT, |
| 23 | DSO__ORIG_FEDORA, |
| 24 | DSO__ORIG_UBUNTU, |
| 25 | DSO__ORIG_BUILDID, |
| 26 | DSO__ORIG_DSO, |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 27 | DSO__ORIG_KMODULE, |
Arnaldo Carvalho de Melo | 94cb9e3 | 2009-08-06 14:43:17 -0300 | [diff] [blame] | 28 | DSO__ORIG_NOT_FOUND, |
| 29 | }; |
| 30 | |
Arnaldo Carvalho de Melo | b0da954 | 2009-11-27 16:29:14 -0200 | [diff] [blame] | 31 | static void dsos__add(struct list_head *head, struct dso *dso); |
Arnaldo Carvalho de Melo | 95011c6 | 2009-11-27 16:29:20 -0200 | [diff] [blame^] | 32 | static struct map *thread__find_map_by_name(struct thread *self, char *name); |
Arnaldo Carvalho de Melo | 3610583 | 2009-11-27 16:29:16 -0200 | [diff] [blame] | 33 | static struct map *map__new2(u64 start, struct dso *dso, enum map_type type); |
Arnaldo Carvalho de Melo | 6a4694a | 2009-11-27 16:29:17 -0200 | [diff] [blame] | 34 | struct symbol *dso__find_symbol(struct dso *self, enum map_type type, u64 addr); |
Arnaldo Carvalho de Melo | c338aee | 2009-11-20 20:51:27 -0200 | [diff] [blame] | 35 | static int dso__load_kernel_sym(struct dso *self, struct map *map, |
Arnaldo Carvalho de Melo | 95011c6 | 2009-11-27 16:29:20 -0200 | [diff] [blame^] | 36 | struct thread *thread, symbol_filter_t filter); |
Arnaldo Carvalho de Melo | 00a192b | 2009-10-30 16:28:24 -0200 | [diff] [blame] | 37 | unsigned int symbol__priv_size; |
Arnaldo Carvalho de Melo | cc612d8 | 2009-11-23 16:39:10 -0200 | [diff] [blame] | 38 | static int vmlinux_path__nr_entries; |
| 39 | static char **vmlinux_path; |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 40 | |
Arnaldo Carvalho de Melo | b32d133 | 2009-11-24 12:05:15 -0200 | [diff] [blame] | 41 | static struct symbol_conf symbol_conf__defaults = { |
| 42 | .use_modules = true, |
| 43 | .try_vmlinux_path = true, |
| 44 | }; |
| 45 | |
Arnaldo Carvalho de Melo | 95011c6 | 2009-11-27 16:29:20 -0200 | [diff] [blame^] | 46 | static struct thread kthread_mem, *kthread = &kthread_mem; |
Arnaldo Carvalho de Melo | af427bf | 2009-10-05 14:26:17 -0300 | [diff] [blame] | 47 | |
Arnaldo Carvalho de Melo | 3610583 | 2009-11-27 16:29:16 -0200 | [diff] [blame] | 48 | bool dso__loaded(const struct dso *self, enum map_type type) |
| 49 | { |
| 50 | return self->loaded & (1 << type); |
| 51 | } |
| 52 | |
| 53 | static void dso__set_loaded(struct dso *self, enum map_type type) |
| 54 | { |
| 55 | self->loaded |= (1 << type); |
| 56 | } |
| 57 | |
Arnaldo Carvalho de Melo | fcf1203 | 2009-11-24 13:01:52 -0200 | [diff] [blame] | 58 | static void symbols__fixup_end(struct rb_root *self) |
Arnaldo Carvalho de Melo | af427bf | 2009-10-05 14:26:17 -0300 | [diff] [blame] | 59 | { |
Arnaldo Carvalho de Melo | fcf1203 | 2009-11-24 13:01:52 -0200 | [diff] [blame] | 60 | struct rb_node *nd, *prevnd = rb_first(self); |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 61 | struct symbol *curr, *prev; |
Arnaldo Carvalho de Melo | af427bf | 2009-10-05 14:26:17 -0300 | [diff] [blame] | 62 | |
| 63 | if (prevnd == NULL) |
| 64 | return; |
| 65 | |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 66 | curr = rb_entry(prevnd, struct symbol, rb_node); |
| 67 | |
Arnaldo Carvalho de Melo | af427bf | 2009-10-05 14:26:17 -0300 | [diff] [blame] | 68 | for (nd = rb_next(prevnd); nd; nd = rb_next(nd)) { |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 69 | prev = curr; |
| 70 | curr = rb_entry(nd, struct symbol, rb_node); |
Arnaldo Carvalho de Melo | af427bf | 2009-10-05 14:26:17 -0300 | [diff] [blame] | 71 | |
| 72 | if (prev->end == prev->start) |
| 73 | prev->end = curr->start - 1; |
Arnaldo Carvalho de Melo | af427bf | 2009-10-05 14:26:17 -0300 | [diff] [blame] | 74 | } |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 75 | |
| 76 | /* Last entry */ |
| 77 | if (curr->end == curr->start) |
| 78 | curr->end = roundup(curr->start, 4096); |
Arnaldo Carvalho de Melo | af427bf | 2009-10-05 14:26:17 -0300 | [diff] [blame] | 79 | } |
| 80 | |
Arnaldo Carvalho de Melo | 95011c6 | 2009-11-27 16:29:20 -0200 | [diff] [blame^] | 81 | static void __thread__fixup_maps_end(struct thread *self, enum map_type type) |
Arnaldo Carvalho de Melo | af427bf | 2009-10-05 14:26:17 -0300 | [diff] [blame] | 82 | { |
| 83 | struct map *prev, *curr; |
Arnaldo Carvalho de Melo | 95011c6 | 2009-11-27 16:29:20 -0200 | [diff] [blame^] | 84 | struct rb_node *nd, *prevnd = rb_first(&self->maps[type]); |
Arnaldo Carvalho de Melo | af427bf | 2009-10-05 14:26:17 -0300 | [diff] [blame] | 85 | |
| 86 | if (prevnd == NULL) |
| 87 | return; |
| 88 | |
| 89 | curr = rb_entry(prevnd, struct map, rb_node); |
Arnaldo Carvalho de Melo | af427bf | 2009-10-05 14:26:17 -0300 | [diff] [blame] | 90 | |
| 91 | for (nd = rb_next(prevnd); nd; nd = rb_next(nd)) { |
| 92 | prev = curr; |
| 93 | curr = rb_entry(nd, struct map, rb_node); |
| 94 | prev->end = curr->start - 1; |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 95 | } |
Arnaldo Carvalho de Melo | 90c8321 | 2009-11-21 14:31:24 -0200 | [diff] [blame] | 96 | |
| 97 | /* |
| 98 | * We still haven't the actual symbols, so guess the |
| 99 | * last map final address. |
| 100 | */ |
| 101 | curr->end = ~0UL; |
Arnaldo Carvalho de Melo | af427bf | 2009-10-05 14:26:17 -0300 | [diff] [blame] | 102 | } |
| 103 | |
Arnaldo Carvalho de Melo | 95011c6 | 2009-11-27 16:29:20 -0200 | [diff] [blame^] | 104 | static void thread__fixup_maps_end(struct thread *self) |
Arnaldo Carvalho de Melo | 23ea4a3 | 2009-11-27 16:29:19 -0200 | [diff] [blame] | 105 | { |
| 106 | int i; |
| 107 | for (i = 0; i < MAP__NR_TYPES; ++i) |
Arnaldo Carvalho de Melo | 95011c6 | 2009-11-27 16:29:20 -0200 | [diff] [blame^] | 108 | __thread__fixup_maps_end(self, i); |
Arnaldo Carvalho de Melo | 23ea4a3 | 2009-11-27 16:29:19 -0200 | [diff] [blame] | 109 | } |
| 110 | |
Arnaldo Carvalho de Melo | 00a192b | 2009-10-30 16:28:24 -0200 | [diff] [blame] | 111 | static struct symbol *symbol__new(u64 start, u64 len, const char *name) |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 112 | { |
Arnaldo Carvalho de Melo | 0085c954 | 2009-05-28 14:55:13 -0300 | [diff] [blame] | 113 | size_t namelen = strlen(name) + 1; |
Arnaldo Carvalho de Melo | 3647948 | 2009-11-24 12:05:16 -0200 | [diff] [blame] | 114 | struct symbol *self = zalloc(symbol__priv_size + |
| 115 | sizeof(*self) + namelen); |
| 116 | if (self == NULL) |
Ingo Molnar | 0b73da3 | 2009-06-06 15:48:52 +0200 | [diff] [blame] | 117 | return NULL; |
| 118 | |
Arnaldo Carvalho de Melo | 3647948 | 2009-11-24 12:05:16 -0200 | [diff] [blame] | 119 | if (symbol__priv_size) |
Arnaldo Carvalho de Melo | 00a192b | 2009-10-30 16:28:24 -0200 | [diff] [blame] | 120 | self = ((void *)self) + symbol__priv_size; |
Arnaldo Carvalho de Melo | 3647948 | 2009-11-24 12:05:16 -0200 | [diff] [blame] | 121 | |
Ingo Molnar | 0b73da3 | 2009-06-06 15:48:52 +0200 | [diff] [blame] | 122 | self->start = start; |
Mike Galbraith | 6cfcc53 | 2009-07-02 08:08:36 +0200 | [diff] [blame] | 123 | self->end = len ? start + len - 1 : start; |
Arnaldo Carvalho de Melo | e420499 | 2009-10-20 14:25:40 -0200 | [diff] [blame] | 124 | |
Arnaldo Carvalho de Melo | 6beba7a | 2009-10-21 17:34:06 -0200 | [diff] [blame] | 125 | pr_debug3("%s: %s %#Lx-%#Lx\n", __func__, name, start, self->end); |
Arnaldo Carvalho de Melo | e420499 | 2009-10-20 14:25:40 -0200 | [diff] [blame] | 126 | |
Ingo Molnar | 0b73da3 | 2009-06-06 15:48:52 +0200 | [diff] [blame] | 127 | memcpy(self->name, name, namelen); |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 128 | |
| 129 | return self; |
| 130 | } |
| 131 | |
Arnaldo Carvalho de Melo | 00a192b | 2009-10-30 16:28:24 -0200 | [diff] [blame] | 132 | static void symbol__delete(struct symbol *self) |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 133 | { |
Arnaldo Carvalho de Melo | 00a192b | 2009-10-30 16:28:24 -0200 | [diff] [blame] | 134 | free(((void *)self) - symbol__priv_size); |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 135 | } |
| 136 | |
| 137 | static size_t symbol__fprintf(struct symbol *self, FILE *fp) |
| 138 | { |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 139 | return fprintf(fp, " %llx-%llx %s\n", |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 140 | self->start, self->end, self->name); |
| 141 | } |
| 142 | |
Arnaldo Carvalho de Melo | cfc10d3 | 2009-11-17 15:40:53 -0200 | [diff] [blame] | 143 | static void dso__set_long_name(struct dso *self, char *name) |
| 144 | { |
Arnaldo Carvalho de Melo | ef6ae72 | 2009-11-20 20:51:29 -0200 | [diff] [blame] | 145 | if (name == NULL) |
| 146 | return; |
Arnaldo Carvalho de Melo | cfc10d3 | 2009-11-17 15:40:53 -0200 | [diff] [blame] | 147 | self->long_name = name; |
| 148 | self->long_name_len = strlen(name); |
| 149 | } |
| 150 | |
| 151 | static void dso__set_basename(struct dso *self) |
| 152 | { |
| 153 | self->short_name = basename(self->long_name); |
| 154 | } |
| 155 | |
Arnaldo Carvalho de Melo | 00a192b | 2009-10-30 16:28:24 -0200 | [diff] [blame] | 156 | struct dso *dso__new(const char *name) |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 157 | { |
| 158 | struct dso *self = malloc(sizeof(*self) + strlen(name) + 1); |
| 159 | |
| 160 | if (self != NULL) { |
Arnaldo Carvalho de Melo | 6a4694a | 2009-11-27 16:29:17 -0200 | [diff] [blame] | 161 | int i; |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 162 | strcpy(self->name, name); |
Arnaldo Carvalho de Melo | cfc10d3 | 2009-11-17 15:40:53 -0200 | [diff] [blame] | 163 | dso__set_long_name(self, self->name); |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 164 | self->short_name = self->name; |
Arnaldo Carvalho de Melo | 6a4694a | 2009-11-27 16:29:17 -0200 | [diff] [blame] | 165 | for (i = 0; i < MAP__NR_TYPES; ++i) |
| 166 | self->symbols[i] = RB_ROOT; |
| 167 | self->find_symbol = dso__find_symbol; |
Arnaldo Carvalho de Melo | 52d422d | 2009-07-10 22:47:28 -0300 | [diff] [blame] | 168 | self->slen_calculated = 0; |
Arnaldo Carvalho de Melo | 94cb9e3 | 2009-08-06 14:43:17 -0300 | [diff] [blame] | 169 | self->origin = DSO__ORIG_NOT_FOUND; |
Arnaldo Carvalho de Melo | 8d06367 | 2009-11-04 18:50:43 -0200 | [diff] [blame] | 170 | self->loaded = 0; |
| 171 | self->has_build_id = 0; |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 172 | } |
| 173 | |
| 174 | return self; |
| 175 | } |
| 176 | |
Arnaldo Carvalho de Melo | fcf1203 | 2009-11-24 13:01:52 -0200 | [diff] [blame] | 177 | static void symbols__delete(struct rb_root *self) |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 178 | { |
| 179 | struct symbol *pos; |
Arnaldo Carvalho de Melo | fcf1203 | 2009-11-24 13:01:52 -0200 | [diff] [blame] | 180 | struct rb_node *next = rb_first(self); |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 181 | |
| 182 | while (next) { |
| 183 | pos = rb_entry(next, struct symbol, rb_node); |
| 184 | next = rb_next(&pos->rb_node); |
Arnaldo Carvalho de Melo | fcf1203 | 2009-11-24 13:01:52 -0200 | [diff] [blame] | 185 | rb_erase(&pos->rb_node, self); |
Arnaldo Carvalho de Melo | 00a192b | 2009-10-30 16:28:24 -0200 | [diff] [blame] | 186 | symbol__delete(pos); |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 187 | } |
| 188 | } |
| 189 | |
| 190 | void dso__delete(struct dso *self) |
| 191 | { |
Arnaldo Carvalho de Melo | 6a4694a | 2009-11-27 16:29:17 -0200 | [diff] [blame] | 192 | int i; |
| 193 | for (i = 0; i < MAP__NR_TYPES; ++i) |
| 194 | symbols__delete(&self->symbols[i]); |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 195 | if (self->long_name != self->name) |
| 196 | free(self->long_name); |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 197 | free(self); |
| 198 | } |
| 199 | |
Arnaldo Carvalho de Melo | 8d06367 | 2009-11-04 18:50:43 -0200 | [diff] [blame] | 200 | void dso__set_build_id(struct dso *self, void *build_id) |
| 201 | { |
| 202 | memcpy(self->build_id, build_id, sizeof(self->build_id)); |
| 203 | self->has_build_id = 1; |
| 204 | } |
| 205 | |
Arnaldo Carvalho de Melo | fcf1203 | 2009-11-24 13:01:52 -0200 | [diff] [blame] | 206 | 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] | 207 | { |
Arnaldo Carvalho de Melo | fcf1203 | 2009-11-24 13:01:52 -0200 | [diff] [blame] | 208 | struct rb_node **p = &self->rb_node; |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 209 | struct rb_node *parent = NULL; |
Paul Mackerras | 9cffa8d | 2009-06-19 22:21:42 +1000 | [diff] [blame] | 210 | const u64 ip = sym->start; |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 211 | struct symbol *s; |
| 212 | |
| 213 | while (*p != NULL) { |
| 214 | parent = *p; |
| 215 | s = rb_entry(parent, struct symbol, rb_node); |
| 216 | if (ip < s->start) |
| 217 | p = &(*p)->rb_left; |
| 218 | else |
| 219 | p = &(*p)->rb_right; |
| 220 | } |
| 221 | rb_link_node(&sym->rb_node, parent, p); |
Arnaldo Carvalho de Melo | fcf1203 | 2009-11-24 13:01:52 -0200 | [diff] [blame] | 222 | rb_insert_color(&sym->rb_node, self); |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 223 | } |
| 224 | |
Arnaldo Carvalho de Melo | fcf1203 | 2009-11-24 13:01:52 -0200 | [diff] [blame] | 225 | 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] | 226 | { |
| 227 | struct rb_node *n; |
| 228 | |
| 229 | if (self == NULL) |
| 230 | return NULL; |
| 231 | |
Arnaldo Carvalho de Melo | fcf1203 | 2009-11-24 13:01:52 -0200 | [diff] [blame] | 232 | n = self->rb_node; |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 233 | |
| 234 | while (n) { |
| 235 | struct symbol *s = rb_entry(n, struct symbol, rb_node); |
| 236 | |
| 237 | if (ip < s->start) |
| 238 | n = n->rb_left; |
| 239 | else if (ip > s->end) |
| 240 | n = n->rb_right; |
| 241 | else |
| 242 | return s; |
| 243 | } |
| 244 | |
| 245 | return NULL; |
| 246 | } |
| 247 | |
Arnaldo Carvalho de Melo | 6a4694a | 2009-11-27 16:29:17 -0200 | [diff] [blame] | 248 | struct symbol *dso__find_symbol(struct dso *self, enum map_type type, u64 addr) |
Arnaldo Carvalho de Melo | fcf1203 | 2009-11-24 13:01:52 -0200 | [diff] [blame] | 249 | { |
Arnaldo Carvalho de Melo | 6a4694a | 2009-11-27 16:29:17 -0200 | [diff] [blame] | 250 | return symbols__find(&self->symbols[type], addr); |
Arnaldo Carvalho de Melo | fcf1203 | 2009-11-24 13:01:52 -0200 | [diff] [blame] | 251 | } |
| 252 | |
Arnaldo Carvalho de Melo | 8d06367 | 2009-11-04 18:50:43 -0200 | [diff] [blame] | 253 | int build_id__sprintf(u8 *self, int len, char *bf) |
| 254 | { |
| 255 | char *bid = bf; |
| 256 | u8 *raw = self; |
| 257 | int i; |
| 258 | |
| 259 | for (i = 0; i < len; ++i) { |
| 260 | sprintf(bid, "%02x", *raw); |
| 261 | ++raw; |
| 262 | bid += 2; |
| 263 | } |
| 264 | |
| 265 | return raw - self; |
| 266 | } |
| 267 | |
Arnaldo Carvalho de Melo | 9e03eb2 | 2009-11-16 16:32:44 -0200 | [diff] [blame] | 268 | size_t dso__fprintf_buildid(struct dso *self, FILE *fp) |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 269 | { |
Arnaldo Carvalho de Melo | 8d06367 | 2009-11-04 18:50:43 -0200 | [diff] [blame] | 270 | char sbuild_id[BUILD_ID_SIZE * 2 + 1]; |
Arnaldo Carvalho de Melo | 8d06367 | 2009-11-04 18:50:43 -0200 | [diff] [blame] | 271 | |
| 272 | 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] | 273 | return fprintf(fp, "%s", sbuild_id); |
| 274 | } |
| 275 | |
Arnaldo Carvalho de Melo | 95011c6 | 2009-11-27 16:29:20 -0200 | [diff] [blame^] | 276 | 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] | 277 | { |
| 278 | struct rb_node *nd; |
| 279 | size_t ret = fprintf(fp, "dso: %s (", self->short_name); |
| 280 | |
| 281 | ret += dso__fprintf_buildid(self, fp); |
Arnaldo Carvalho de Melo | 6a4694a | 2009-11-27 16:29:17 -0200 | [diff] [blame] | 282 | ret += fprintf(fp, ")\n"); |
Arnaldo Carvalho de Melo | 95011c6 | 2009-11-27 16:29:20 -0200 | [diff] [blame^] | 283 | for (nd = rb_first(&self->symbols[type]); nd; nd = rb_next(nd)) { |
| 284 | struct symbol *pos = rb_entry(nd, struct symbol, rb_node); |
| 285 | ret += symbol__fprintf(pos, fp); |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 286 | } |
| 287 | |
| 288 | return ret; |
| 289 | } |
| 290 | |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 291 | /* |
| 292 | * Loads the function entries in /proc/kallsyms into kernel_map->dso, |
| 293 | * so that we can in the next step set the symbol ->end address and then |
| 294 | * call kernel_maps__split_kallsyms. |
| 295 | */ |
Arnaldo Carvalho de Melo | 4e06255 | 2009-11-27 16:29:18 -0200 | [diff] [blame] | 296 | static int dso__load_all_kallsyms(struct dso *self, struct map *map) |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 297 | { |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 298 | char *line = NULL; |
| 299 | size_t n; |
Arnaldo Carvalho de Melo | 4e06255 | 2009-11-27 16:29:18 -0200 | [diff] [blame] | 300 | struct rb_root *root = &self->symbols[map->type]; |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 301 | FILE *file = fopen("/proc/kallsyms", "r"); |
| 302 | |
| 303 | if (file == NULL) |
| 304 | goto out_failure; |
| 305 | |
| 306 | while (!feof(file)) { |
Paul Mackerras | 9cffa8d | 2009-06-19 22:21:42 +1000 | [diff] [blame] | 307 | u64 start; |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 308 | struct symbol *sym; |
| 309 | int line_len, len; |
| 310 | char symbol_type; |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 311 | char *symbol_name; |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 312 | |
| 313 | line_len = getline(&line, &n, file); |
| 314 | if (line_len < 0) |
| 315 | break; |
| 316 | |
| 317 | if (!line) |
| 318 | goto out_failure; |
| 319 | |
| 320 | line[--line_len] = '\0'; /* \n */ |
| 321 | |
Arnaldo Carvalho de Melo | a0055ae | 2009-06-01 17:50:19 -0300 | [diff] [blame] | 322 | len = hex2u64(line, &start); |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 323 | |
| 324 | len++; |
| 325 | if (len + 2 >= line_len) |
| 326 | continue; |
| 327 | |
| 328 | symbol_type = toupper(line[len]); |
| 329 | /* |
| 330 | * We're interested only in code ('T'ext) |
| 331 | */ |
| 332 | if (symbol_type != 'T' && symbol_type != 'W') |
| 333 | continue; |
Arnaldo Carvalho de Melo | af427bf | 2009-10-05 14:26:17 -0300 | [diff] [blame] | 334 | |
| 335 | symbol_name = line + len + 2; |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 336 | /* |
| 337 | * Will fix up the end later, when we have all symbols sorted. |
| 338 | */ |
Arnaldo Carvalho de Melo | 00a192b | 2009-10-30 16:28:24 -0200 | [diff] [blame] | 339 | sym = symbol__new(start, 0, symbol_name); |
Arnaldo Carvalho de Melo | af427bf | 2009-10-05 14:26:17 -0300 | [diff] [blame] | 340 | |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 341 | if (sym == NULL) |
| 342 | goto out_delete_line; |
Arnaldo Carvalho de Melo | 8216416 | 2009-11-16 13:48:11 -0200 | [diff] [blame] | 343 | /* |
| 344 | * We will pass the symbols to the filter later, in |
Arnaldo Carvalho de Melo | 4e06255 | 2009-11-27 16:29:18 -0200 | [diff] [blame] | 345 | * map__split_kallsyms, when we have split the maps per module |
Arnaldo Carvalho de Melo | 8216416 | 2009-11-16 13:48:11 -0200 | [diff] [blame] | 346 | */ |
Arnaldo Carvalho de Melo | 4e06255 | 2009-11-27 16:29:18 -0200 | [diff] [blame] | 347 | symbols__insert(root, sym); |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 348 | } |
| 349 | |
| 350 | free(line); |
| 351 | fclose(file); |
| 352 | |
| 353 | return 0; |
| 354 | |
| 355 | out_delete_line: |
| 356 | free(line); |
| 357 | out_failure: |
| 358 | return -1; |
| 359 | } |
| 360 | |
| 361 | /* |
| 362 | * Split the symbols into maps, making sure there are no overlaps, i.e. the |
| 363 | * kernel range is broken in several maps, named [kernel].N, as we don't have |
| 364 | * the original ELF section names vmlinux have. |
| 365 | */ |
Arnaldo Carvalho de Melo | 95011c6 | 2009-11-27 16:29:20 -0200 | [diff] [blame^] | 366 | static int dso__split_kallsyms(struct dso *self, struct map *map, struct thread *thread, |
Arnaldo Carvalho de Melo | 4e06255 | 2009-11-27 16:29:18 -0200 | [diff] [blame] | 367 | symbol_filter_t filter) |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 368 | { |
Arnaldo Carvalho de Melo | 4e06255 | 2009-11-27 16:29:18 -0200 | [diff] [blame] | 369 | struct map *curr_map = map; |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 370 | struct symbol *pos; |
| 371 | int count = 0; |
Arnaldo Carvalho de Melo | 4e06255 | 2009-11-27 16:29:18 -0200 | [diff] [blame] | 372 | struct rb_root *root = &self->symbols[map->type]; |
| 373 | struct rb_node *next = rb_first(root); |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 374 | int kernel_range = 0; |
| 375 | |
| 376 | while (next) { |
| 377 | char *module; |
| 378 | |
| 379 | pos = rb_entry(next, struct symbol, rb_node); |
| 380 | next = rb_next(&pos->rb_node); |
| 381 | |
| 382 | module = strchr(pos->name, '\t'); |
| 383 | if (module) { |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 384 | *module++ = '\0'; |
| 385 | |
Arnaldo Carvalho de Melo | 4e06255 | 2009-11-27 16:29:18 -0200 | [diff] [blame] | 386 | if (strcmp(self->name, module)) { |
Arnaldo Carvalho de Melo | 95011c6 | 2009-11-27 16:29:20 -0200 | [diff] [blame^] | 387 | curr_map = thread__find_map_by_name(thread, module); |
Arnaldo Carvalho de Melo | 4e06255 | 2009-11-27 16:29:18 -0200 | [diff] [blame] | 388 | if (curr_map == NULL) { |
Arnaldo Carvalho de Melo | 95011c6 | 2009-11-27 16:29:20 -0200 | [diff] [blame^] | 389 | pr_debug("/proc/{kallsyms,modules} " |
| 390 | "inconsistency!\n"); |
Arnaldo Carvalho de Melo | af427bf | 2009-10-05 14:26:17 -0300 | [diff] [blame] | 391 | return -1; |
| 392 | } |
| 393 | } |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 394 | /* |
| 395 | * So that we look just like we get from .ko files, |
| 396 | * i.e. not prelinked, relative to map->start. |
| 397 | */ |
Arnaldo Carvalho de Melo | 4e06255 | 2009-11-27 16:29:18 -0200 | [diff] [blame] | 398 | pos->start = curr_map->map_ip(curr_map, pos->start); |
| 399 | pos->end = curr_map->map_ip(curr_map, pos->end); |
| 400 | } else if (curr_map != map) { |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 401 | char dso_name[PATH_MAX]; |
| 402 | struct dso *dso; |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 403 | |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 404 | snprintf(dso_name, sizeof(dso_name), "[kernel].%d", |
| 405 | kernel_range++); |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 406 | |
Arnaldo Carvalho de Melo | 00a192b | 2009-10-30 16:28:24 -0200 | [diff] [blame] | 407 | dso = dso__new(dso_name); |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 408 | if (dso == NULL) |
| 409 | return -1; |
| 410 | |
Arnaldo Carvalho de Melo | 4e06255 | 2009-11-27 16:29:18 -0200 | [diff] [blame] | 411 | curr_map = map__new2(pos->start, dso, map->type); |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 412 | if (map == NULL) { |
| 413 | dso__delete(dso); |
| 414 | return -1; |
| 415 | } |
| 416 | |
Arnaldo Carvalho de Melo | 4e06255 | 2009-11-27 16:29:18 -0200 | [diff] [blame] | 417 | curr_map->map_ip = curr_map->unmap_ip = identity__map_ip; |
Arnaldo Carvalho de Melo | 95011c6 | 2009-11-27 16:29:20 -0200 | [diff] [blame^] | 418 | __thread__insert_map(thread, curr_map); |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 419 | ++kernel_range; |
| 420 | } |
| 421 | |
Arnaldo Carvalho de Melo | 4e06255 | 2009-11-27 16:29:18 -0200 | [diff] [blame] | 422 | if (filter && filter(curr_map, pos)) { |
| 423 | rb_erase(&pos->rb_node, root); |
Arnaldo Carvalho de Melo | 00a192b | 2009-10-30 16:28:24 -0200 | [diff] [blame] | 424 | symbol__delete(pos); |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 425 | } else { |
Arnaldo Carvalho de Melo | 4e06255 | 2009-11-27 16:29:18 -0200 | [diff] [blame] | 426 | if (curr_map != map) { |
| 427 | rb_erase(&pos->rb_node, root); |
| 428 | symbols__insert(&curr_map->dso->symbols[curr_map->type], pos); |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 429 | } |
Mike Galbraith | 9974f49 | 2009-07-02 08:05:58 +0200 | [diff] [blame] | 430 | count++; |
| 431 | } |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 432 | } |
| 433 | |
Mike Galbraith | 9974f49 | 2009-07-02 08:05:58 +0200 | [diff] [blame] | 434 | return count; |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 435 | } |
| 436 | |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 437 | |
Arnaldo Carvalho de Melo | 4e06255 | 2009-11-27 16:29:18 -0200 | [diff] [blame] | 438 | static int dso__load_kallsyms(struct dso *self, struct map *map, |
Arnaldo Carvalho de Melo | 95011c6 | 2009-11-27 16:29:20 -0200 | [diff] [blame^] | 439 | struct thread *thread, symbol_filter_t filter) |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 440 | { |
Arnaldo Carvalho de Melo | 4e06255 | 2009-11-27 16:29:18 -0200 | [diff] [blame] | 441 | if (dso__load_all_kallsyms(self, map) < 0) |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 442 | return -1; |
| 443 | |
Arnaldo Carvalho de Melo | 4e06255 | 2009-11-27 16:29:18 -0200 | [diff] [blame] | 444 | symbols__fixup_end(&self->symbols[map->type]); |
| 445 | self->origin = DSO__ORIG_KERNEL; |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 446 | |
Arnaldo Carvalho de Melo | 95011c6 | 2009-11-27 16:29:20 -0200 | [diff] [blame^] | 447 | return dso__split_kallsyms(self, map, thread, filter); |
Arnaldo Carvalho de Melo | 23ea4a3 | 2009-11-27 16:29:19 -0200 | [diff] [blame] | 448 | } |
| 449 | |
| 450 | size_t kernel_maps__fprintf(FILE *fp) |
| 451 | { |
| 452 | size_t printed = fprintf(fp, "Kernel maps:\n"); |
Arnaldo Carvalho de Melo | 95011c6 | 2009-11-27 16:29:20 -0200 | [diff] [blame^] | 453 | printed += thread__fprintf_maps(kthread, fp); |
Arnaldo Carvalho de Melo | 6beba7a | 2009-10-21 17:34:06 -0200 | [diff] [blame] | 454 | return printed + fprintf(fp, "END kernel maps\n"); |
Arnaldo Carvalho de Melo | af427bf | 2009-10-05 14:26:17 -0300 | [diff] [blame] | 455 | } |
| 456 | |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 457 | 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] | 458 | symbol_filter_t filter) |
Pekka Enberg | 80d496b | 2009-06-08 21:12:48 +0300 | [diff] [blame] | 459 | { |
| 460 | char *line = NULL; |
| 461 | size_t n; |
| 462 | FILE *file; |
| 463 | int nr_syms = 0; |
| 464 | |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 465 | file = fopen(self->long_name, "r"); |
Pekka Enberg | 80d496b | 2009-06-08 21:12:48 +0300 | [diff] [blame] | 466 | if (file == NULL) |
| 467 | goto out_failure; |
| 468 | |
| 469 | while (!feof(file)) { |
Paul Mackerras | 9cffa8d | 2009-06-19 22:21:42 +1000 | [diff] [blame] | 470 | u64 start, size; |
Pekka Enberg | 80d496b | 2009-06-08 21:12:48 +0300 | [diff] [blame] | 471 | struct symbol *sym; |
| 472 | int line_len, len; |
| 473 | |
| 474 | line_len = getline(&line, &n, file); |
| 475 | if (line_len < 0) |
| 476 | break; |
| 477 | |
| 478 | if (!line) |
| 479 | goto out_failure; |
| 480 | |
| 481 | line[--line_len] = '\0'; /* \n */ |
| 482 | |
| 483 | len = hex2u64(line, &start); |
| 484 | |
| 485 | len++; |
| 486 | if (len + 2 >= line_len) |
| 487 | continue; |
| 488 | |
| 489 | len += hex2u64(line + len, &size); |
| 490 | |
| 491 | len++; |
| 492 | if (len + 2 >= line_len) |
| 493 | continue; |
| 494 | |
Arnaldo Carvalho de Melo | 00a192b | 2009-10-30 16:28:24 -0200 | [diff] [blame] | 495 | sym = symbol__new(start, size, line + len); |
Pekka Enberg | 80d496b | 2009-06-08 21:12:48 +0300 | [diff] [blame] | 496 | |
| 497 | if (sym == NULL) |
| 498 | goto out_delete_line; |
| 499 | |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 500 | if (filter && filter(map, sym)) |
Arnaldo Carvalho de Melo | 00a192b | 2009-10-30 16:28:24 -0200 | [diff] [blame] | 501 | symbol__delete(sym); |
Pekka Enberg | 80d496b | 2009-06-08 21:12:48 +0300 | [diff] [blame] | 502 | else { |
Arnaldo Carvalho de Melo | 6a4694a | 2009-11-27 16:29:17 -0200 | [diff] [blame] | 503 | symbols__insert(&self->symbols[map->type], sym); |
Pekka Enberg | 80d496b | 2009-06-08 21:12:48 +0300 | [diff] [blame] | 504 | nr_syms++; |
| 505 | } |
| 506 | } |
| 507 | |
| 508 | free(line); |
| 509 | fclose(file); |
| 510 | |
| 511 | return nr_syms; |
| 512 | |
| 513 | out_delete_line: |
| 514 | free(line); |
| 515 | out_failure: |
| 516 | return -1; |
| 517 | } |
| 518 | |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 519 | /** |
| 520 | * elf_symtab__for_each_symbol - iterate thru all the symbols |
| 521 | * |
| 522 | * @self: struct elf_symtab instance to iterate |
Ingo Molnar | 83a0944 | 2009-08-15 12:26:57 +0200 | [diff] [blame] | 523 | * @idx: uint32_t idx |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 524 | * @sym: GElf_Sym iterator |
| 525 | */ |
Ingo Molnar | 83a0944 | 2009-08-15 12:26:57 +0200 | [diff] [blame] | 526 | #define elf_symtab__for_each_symbol(syms, nr_syms, idx, sym) \ |
| 527 | for (idx = 0, gelf_getsym(syms, idx, &sym);\ |
| 528 | idx < nr_syms; \ |
| 529 | idx++, gelf_getsym(syms, idx, &sym)) |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 530 | |
| 531 | static inline uint8_t elf_sym__type(const GElf_Sym *sym) |
| 532 | { |
| 533 | return GELF_ST_TYPE(sym->st_info); |
| 534 | } |
| 535 | |
| 536 | static inline int elf_sym__is_function(const GElf_Sym *sym) |
| 537 | { |
| 538 | return elf_sym__type(sym) == STT_FUNC && |
| 539 | sym->st_name != 0 && |
Arnaldo Carvalho de Melo | 8183313 | 2009-10-05 23:35:03 -0300 | [diff] [blame] | 540 | sym->st_shndx != SHN_UNDEF; |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 541 | } |
| 542 | |
Mike Galbraith | 6cfcc53 | 2009-07-02 08:08:36 +0200 | [diff] [blame] | 543 | static inline int elf_sym__is_label(const GElf_Sym *sym) |
| 544 | { |
| 545 | return elf_sym__type(sym) == STT_NOTYPE && |
| 546 | sym->st_name != 0 && |
| 547 | sym->st_shndx != SHN_UNDEF && |
| 548 | sym->st_shndx != SHN_ABS; |
| 549 | } |
| 550 | |
| 551 | static inline const char *elf_sec__name(const GElf_Shdr *shdr, |
| 552 | const Elf_Data *secstrs) |
| 553 | { |
| 554 | return secstrs->d_buf + shdr->sh_name; |
| 555 | } |
| 556 | |
| 557 | static inline int elf_sec__is_text(const GElf_Shdr *shdr, |
| 558 | const Elf_Data *secstrs) |
| 559 | { |
| 560 | return strstr(elf_sec__name(shdr, secstrs), "text") != NULL; |
| 561 | } |
| 562 | |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 563 | static inline const char *elf_sym__name(const GElf_Sym *sym, |
| 564 | const Elf_Data *symstrs) |
| 565 | { |
| 566 | return symstrs->d_buf + sym->st_name; |
| 567 | } |
| 568 | |
| 569 | static Elf_Scn *elf_section_by_name(Elf *elf, GElf_Ehdr *ep, |
| 570 | GElf_Shdr *shp, const char *name, |
Ingo Molnar | 83a0944 | 2009-08-15 12:26:57 +0200 | [diff] [blame] | 571 | size_t *idx) |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 572 | { |
| 573 | Elf_Scn *sec = NULL; |
| 574 | size_t cnt = 1; |
| 575 | |
| 576 | while ((sec = elf_nextscn(elf, sec)) != NULL) { |
| 577 | char *str; |
| 578 | |
| 579 | gelf_getshdr(sec, shp); |
| 580 | str = elf_strptr(elf, ep->e_shstrndx, shp->sh_name); |
| 581 | if (!strcmp(name, str)) { |
Ingo Molnar | 83a0944 | 2009-08-15 12:26:57 +0200 | [diff] [blame] | 582 | if (idx) |
| 583 | *idx = cnt; |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 584 | break; |
| 585 | } |
| 586 | ++cnt; |
| 587 | } |
| 588 | |
| 589 | return sec; |
| 590 | } |
| 591 | |
Arnaldo Carvalho de Melo | 8ce998d | 2009-06-03 00:54:33 -0300 | [diff] [blame] | 592 | #define elf_section__for_each_rel(reldata, pos, pos_mem, idx, nr_entries) \ |
| 593 | for (idx = 0, pos = gelf_getrel(reldata, 0, &pos_mem); \ |
| 594 | idx < nr_entries; \ |
| 595 | ++idx, pos = gelf_getrel(reldata, idx, &pos_mem)) |
| 596 | |
| 597 | #define elf_section__for_each_rela(reldata, pos, pos_mem, idx, nr_entries) \ |
| 598 | for (idx = 0, pos = gelf_getrela(reldata, 0, &pos_mem); \ |
| 599 | idx < nr_entries; \ |
| 600 | ++idx, pos = gelf_getrela(reldata, idx, &pos_mem)) |
| 601 | |
Arnaldo Carvalho de Melo | a25e46c | 2009-07-11 12:18:36 -0300 | [diff] [blame] | 602 | /* |
| 603 | * We need to check if we have a .dynsym, so that we can handle the |
| 604 | * .plt, synthesizing its symbols, that aren't on the symtabs (be it |
| 605 | * .dynsym or .symtab). |
| 606 | * And always look at the original dso, not at debuginfo packages, that |
| 607 | * have the PLT data stripped out (shdr_rel_plt.sh_type == SHT_NOBITS). |
| 608 | */ |
Arnaldo Carvalho de Melo | 8216416 | 2009-11-16 13:48:11 -0200 | [diff] [blame] | 609 | static int dso__synthesize_plt_symbols(struct dso *self, struct map *map, |
| 610 | symbol_filter_t filter) |
Arnaldo Carvalho de Melo | 8ce998d | 2009-06-03 00:54:33 -0300 | [diff] [blame] | 611 | { |
| 612 | uint32_t nr_rel_entries, idx; |
| 613 | GElf_Sym sym; |
Paul Mackerras | 9cffa8d | 2009-06-19 22:21:42 +1000 | [diff] [blame] | 614 | u64 plt_offset; |
Arnaldo Carvalho de Melo | 8ce998d | 2009-06-03 00:54:33 -0300 | [diff] [blame] | 615 | GElf_Shdr shdr_plt; |
| 616 | struct symbol *f; |
Arnaldo Carvalho de Melo | a25e46c | 2009-07-11 12:18:36 -0300 | [diff] [blame] | 617 | GElf_Shdr shdr_rel_plt, shdr_dynsym; |
Arnaldo Carvalho de Melo | 8ce998d | 2009-06-03 00:54:33 -0300 | [diff] [blame] | 618 | Elf_Data *reldata, *syms, *symstrs; |
Arnaldo Carvalho de Melo | a25e46c | 2009-07-11 12:18:36 -0300 | [diff] [blame] | 619 | Elf_Scn *scn_plt_rel, *scn_symstrs, *scn_dynsym; |
| 620 | size_t dynsym_idx; |
| 621 | GElf_Ehdr ehdr; |
Arnaldo Carvalho de Melo | 8ce998d | 2009-06-03 00:54:33 -0300 | [diff] [blame] | 622 | char sympltname[1024]; |
Arnaldo Carvalho de Melo | a25e46c | 2009-07-11 12:18:36 -0300 | [diff] [blame] | 623 | Elf *elf; |
| 624 | int nr = 0, symidx, fd, err = 0; |
Arnaldo Carvalho de Melo | 8ce998d | 2009-06-03 00:54:33 -0300 | [diff] [blame] | 625 | |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 626 | fd = open(self->long_name, O_RDONLY); |
Arnaldo Carvalho de Melo | a25e46c | 2009-07-11 12:18:36 -0300 | [diff] [blame] | 627 | if (fd < 0) |
| 628 | goto out; |
| 629 | |
Marti Raudsepp | 8408712 | 2009-10-24 19:10:36 +0300 | [diff] [blame] | 630 | elf = elf_begin(fd, PERF_ELF_C_READ_MMAP, NULL); |
Arnaldo Carvalho de Melo | a25e46c | 2009-07-11 12:18:36 -0300 | [diff] [blame] | 631 | if (elf == NULL) |
| 632 | goto out_close; |
| 633 | |
| 634 | if (gelf_getehdr(elf, &ehdr) == NULL) |
| 635 | goto out_elf_end; |
| 636 | |
| 637 | scn_dynsym = elf_section_by_name(elf, &ehdr, &shdr_dynsym, |
| 638 | ".dynsym", &dynsym_idx); |
| 639 | if (scn_dynsym == NULL) |
| 640 | goto out_elf_end; |
| 641 | |
| 642 | 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] | 643 | ".rela.plt", NULL); |
| 644 | if (scn_plt_rel == NULL) { |
Arnaldo Carvalho de Melo | a25e46c | 2009-07-11 12:18:36 -0300 | [diff] [blame] | 645 | 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] | 646 | ".rel.plt", NULL); |
| 647 | if (scn_plt_rel == NULL) |
Arnaldo Carvalho de Melo | a25e46c | 2009-07-11 12:18:36 -0300 | [diff] [blame] | 648 | goto out_elf_end; |
Arnaldo Carvalho de Melo | 8ce998d | 2009-06-03 00:54:33 -0300 | [diff] [blame] | 649 | } |
| 650 | |
Arnaldo Carvalho de Melo | a25e46c | 2009-07-11 12:18:36 -0300 | [diff] [blame] | 651 | err = -1; |
Arnaldo Carvalho de Melo | 8ce998d | 2009-06-03 00:54:33 -0300 | [diff] [blame] | 652 | |
Arnaldo Carvalho de Melo | a25e46c | 2009-07-11 12:18:36 -0300 | [diff] [blame] | 653 | if (shdr_rel_plt.sh_link != dynsym_idx) |
| 654 | goto out_elf_end; |
| 655 | |
| 656 | if (elf_section_by_name(elf, &ehdr, &shdr_plt, ".plt", NULL) == NULL) |
| 657 | goto out_elf_end; |
Arnaldo Carvalho de Melo | 8ce998d | 2009-06-03 00:54:33 -0300 | [diff] [blame] | 658 | |
| 659 | /* |
Ingo Molnar | 83a0944 | 2009-08-15 12:26:57 +0200 | [diff] [blame] | 660 | * 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] | 661 | * and the symbols in the .dynsym they refer to. |
| 662 | */ |
| 663 | reldata = elf_getdata(scn_plt_rel, NULL); |
| 664 | if (reldata == NULL) |
Arnaldo Carvalho de Melo | a25e46c | 2009-07-11 12:18:36 -0300 | [diff] [blame] | 665 | goto out_elf_end; |
Arnaldo Carvalho de Melo | 8ce998d | 2009-06-03 00:54:33 -0300 | [diff] [blame] | 666 | |
| 667 | syms = elf_getdata(scn_dynsym, NULL); |
| 668 | if (syms == NULL) |
Arnaldo Carvalho de Melo | a25e46c | 2009-07-11 12:18:36 -0300 | [diff] [blame] | 669 | goto out_elf_end; |
Arnaldo Carvalho de Melo | 8ce998d | 2009-06-03 00:54:33 -0300 | [diff] [blame] | 670 | |
Arnaldo Carvalho de Melo | a25e46c | 2009-07-11 12:18:36 -0300 | [diff] [blame] | 671 | scn_symstrs = elf_getscn(elf, shdr_dynsym.sh_link); |
Arnaldo Carvalho de Melo | 8ce998d | 2009-06-03 00:54:33 -0300 | [diff] [blame] | 672 | if (scn_symstrs == NULL) |
Arnaldo Carvalho de Melo | a25e46c | 2009-07-11 12:18:36 -0300 | [diff] [blame] | 673 | goto out_elf_end; |
Arnaldo Carvalho de Melo | 8ce998d | 2009-06-03 00:54:33 -0300 | [diff] [blame] | 674 | |
| 675 | symstrs = elf_getdata(scn_symstrs, NULL); |
| 676 | if (symstrs == NULL) |
Arnaldo Carvalho de Melo | a25e46c | 2009-07-11 12:18:36 -0300 | [diff] [blame] | 677 | goto out_elf_end; |
Arnaldo Carvalho de Melo | 8ce998d | 2009-06-03 00:54:33 -0300 | [diff] [blame] | 678 | |
| 679 | nr_rel_entries = shdr_rel_plt.sh_size / shdr_rel_plt.sh_entsize; |
| 680 | plt_offset = shdr_plt.sh_offset; |
| 681 | |
| 682 | if (shdr_rel_plt.sh_type == SHT_RELA) { |
| 683 | GElf_Rela pos_mem, *pos; |
| 684 | |
| 685 | elf_section__for_each_rela(reldata, pos, pos_mem, idx, |
| 686 | nr_rel_entries) { |
| 687 | symidx = GELF_R_SYM(pos->r_info); |
| 688 | plt_offset += shdr_plt.sh_entsize; |
| 689 | gelf_getsym(syms, symidx, &sym); |
| 690 | snprintf(sympltname, sizeof(sympltname), |
| 691 | "%s@plt", elf_sym__name(&sym, symstrs)); |
| 692 | |
| 693 | f = symbol__new(plt_offset, shdr_plt.sh_entsize, |
Arnaldo Carvalho de Melo | 00a192b | 2009-10-30 16:28:24 -0200 | [diff] [blame] | 694 | sympltname); |
Arnaldo Carvalho de Melo | 8ce998d | 2009-06-03 00:54:33 -0300 | [diff] [blame] | 695 | if (!f) |
Arnaldo Carvalho de Melo | a25e46c | 2009-07-11 12:18:36 -0300 | [diff] [blame] | 696 | goto out_elf_end; |
Arnaldo Carvalho de Melo | 8ce998d | 2009-06-03 00:54:33 -0300 | [diff] [blame] | 697 | |
Arnaldo Carvalho de Melo | 8216416 | 2009-11-16 13:48:11 -0200 | [diff] [blame] | 698 | if (filter && filter(map, f)) |
| 699 | symbol__delete(f); |
| 700 | else { |
Arnaldo Carvalho de Melo | 6a4694a | 2009-11-27 16:29:17 -0200 | [diff] [blame] | 701 | symbols__insert(&self->symbols[map->type], f); |
Arnaldo Carvalho de Melo | 8216416 | 2009-11-16 13:48:11 -0200 | [diff] [blame] | 702 | ++nr; |
| 703 | } |
Arnaldo Carvalho de Melo | 8ce998d | 2009-06-03 00:54:33 -0300 | [diff] [blame] | 704 | } |
| 705 | } else if (shdr_rel_plt.sh_type == SHT_REL) { |
| 706 | GElf_Rel pos_mem, *pos; |
| 707 | elf_section__for_each_rel(reldata, pos, pos_mem, idx, |
| 708 | nr_rel_entries) { |
| 709 | symidx = GELF_R_SYM(pos->r_info); |
| 710 | plt_offset += shdr_plt.sh_entsize; |
| 711 | gelf_getsym(syms, symidx, &sym); |
| 712 | snprintf(sympltname, sizeof(sympltname), |
| 713 | "%s@plt", elf_sym__name(&sym, symstrs)); |
| 714 | |
| 715 | f = symbol__new(plt_offset, shdr_plt.sh_entsize, |
Arnaldo Carvalho de Melo | 00a192b | 2009-10-30 16:28:24 -0200 | [diff] [blame] | 716 | sympltname); |
Arnaldo Carvalho de Melo | 8ce998d | 2009-06-03 00:54:33 -0300 | [diff] [blame] | 717 | if (!f) |
Arnaldo Carvalho de Melo | a25e46c | 2009-07-11 12:18:36 -0300 | [diff] [blame] | 718 | goto out_elf_end; |
Arnaldo Carvalho de Melo | 8ce998d | 2009-06-03 00:54:33 -0300 | [diff] [blame] | 719 | |
Arnaldo Carvalho de Melo | 8216416 | 2009-11-16 13:48:11 -0200 | [diff] [blame] | 720 | if (filter && filter(map, f)) |
| 721 | symbol__delete(f); |
| 722 | else { |
Arnaldo Carvalho de Melo | 6a4694a | 2009-11-27 16:29:17 -0200 | [diff] [blame] | 723 | symbols__insert(&self->symbols[map->type], f); |
Arnaldo Carvalho de Melo | 8216416 | 2009-11-16 13:48:11 -0200 | [diff] [blame] | 724 | ++nr; |
| 725 | } |
Arnaldo Carvalho de Melo | 8ce998d | 2009-06-03 00:54:33 -0300 | [diff] [blame] | 726 | } |
Arnaldo Carvalho de Melo | 8ce998d | 2009-06-03 00:54:33 -0300 | [diff] [blame] | 727 | } |
| 728 | |
Arnaldo Carvalho de Melo | a25e46c | 2009-07-11 12:18:36 -0300 | [diff] [blame] | 729 | err = 0; |
| 730 | out_elf_end: |
| 731 | elf_end(elf); |
| 732 | out_close: |
| 733 | close(fd); |
| 734 | |
| 735 | if (err == 0) |
| 736 | return nr; |
| 737 | out: |
Arnaldo Carvalho de Melo | 6beba7a | 2009-10-21 17:34:06 -0200 | [diff] [blame] | 738 | pr_warning("%s: problems reading %s PLT info.\n", |
| 739 | __func__, self->long_name); |
Arnaldo Carvalho de Melo | a25e46c | 2009-07-11 12:18:36 -0300 | [diff] [blame] | 740 | return 0; |
Arnaldo Carvalho de Melo | 8ce998d | 2009-06-03 00:54:33 -0300 | [diff] [blame] | 741 | } |
| 742 | |
Arnaldo Carvalho de Melo | 95011c6 | 2009-11-27 16:29:20 -0200 | [diff] [blame^] | 743 | static int dso__load_sym(struct dso *self, struct map *map, |
| 744 | struct thread *thread, const char *name, int fd, |
| 745 | symbol_filter_t filter, int kernel, int kmodule) |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 746 | { |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 747 | struct map *curr_map = map; |
| 748 | struct dso *curr_dso = self; |
| 749 | size_t dso_name_len = strlen(self->short_name); |
Mike Galbraith | 6cfcc53 | 2009-07-02 08:08:36 +0200 | [diff] [blame] | 750 | Elf_Data *symstrs, *secstrs; |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 751 | uint32_t nr_syms; |
| 752 | int err = -1; |
Ingo Molnar | 83a0944 | 2009-08-15 12:26:57 +0200 | [diff] [blame] | 753 | uint32_t idx; |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 754 | GElf_Ehdr ehdr; |
| 755 | GElf_Shdr shdr; |
| 756 | Elf_Data *syms; |
| 757 | GElf_Sym sym; |
Arnaldo Carvalho de Melo | a25e46c | 2009-07-11 12:18:36 -0300 | [diff] [blame] | 758 | Elf_Scn *sec, *sec_strndx; |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 759 | Elf *elf; |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 760 | int nr = 0; |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 761 | |
Marti Raudsepp | 8408712 | 2009-10-24 19:10:36 +0300 | [diff] [blame] | 762 | elf = elf_begin(fd, PERF_ELF_C_READ_MMAP, NULL); |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 763 | if (elf == NULL) { |
Arnaldo Carvalho de Melo | 6beba7a | 2009-10-21 17:34:06 -0200 | [diff] [blame] | 764 | pr_err("%s: cannot read %s ELF file.\n", __func__, name); |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 765 | goto out_close; |
| 766 | } |
| 767 | |
| 768 | if (gelf_getehdr(elf, &ehdr) == NULL) { |
Arnaldo Carvalho de Melo | 6beba7a | 2009-10-21 17:34:06 -0200 | [diff] [blame] | 769 | pr_err("%s: cannot get elf header.\n", __func__); |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 770 | goto out_elf_end; |
| 771 | } |
| 772 | |
Arnaldo Carvalho de Melo | 8ce998d | 2009-06-03 00:54:33 -0300 | [diff] [blame] | 773 | sec = elf_section_by_name(elf, &ehdr, &shdr, ".symtab", NULL); |
| 774 | if (sec == NULL) { |
Arnaldo Carvalho de Melo | a25e46c | 2009-07-11 12:18:36 -0300 | [diff] [blame] | 775 | sec = elf_section_by_name(elf, &ehdr, &shdr, ".dynsym", NULL); |
| 776 | if (sec == NULL) |
Arnaldo Carvalho de Melo | 8ce998d | 2009-06-03 00:54:33 -0300 | [diff] [blame] | 777 | goto out_elf_end; |
Arnaldo Carvalho de Melo | 8ce998d | 2009-06-03 00:54:33 -0300 | [diff] [blame] | 778 | } |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 779 | |
| 780 | syms = elf_getdata(sec, NULL); |
| 781 | if (syms == NULL) |
| 782 | goto out_elf_end; |
| 783 | |
| 784 | sec = elf_getscn(elf, shdr.sh_link); |
| 785 | if (sec == NULL) |
| 786 | goto out_elf_end; |
| 787 | |
| 788 | symstrs = elf_getdata(sec, NULL); |
| 789 | if (symstrs == NULL) |
| 790 | goto out_elf_end; |
| 791 | |
Mike Galbraith | 6cfcc53 | 2009-07-02 08:08:36 +0200 | [diff] [blame] | 792 | sec_strndx = elf_getscn(elf, ehdr.e_shstrndx); |
| 793 | if (sec_strndx == NULL) |
| 794 | goto out_elf_end; |
| 795 | |
| 796 | secstrs = elf_getdata(sec_strndx, NULL); |
Stoyan Gaydarov | 9b30a26 | 2009-07-30 05:25:29 -0500 | [diff] [blame] | 797 | if (secstrs == NULL) |
Mike Galbraith | 6cfcc53 | 2009-07-02 08:08:36 +0200 | [diff] [blame] | 798 | goto out_elf_end; |
| 799 | |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 800 | nr_syms = shdr.sh_size / shdr.sh_entsize; |
| 801 | |
Arjan van de Ven | e9fbc9d | 2009-06-06 21:22:33 +0200 | [diff] [blame] | 802 | memset(&sym, 0, sizeof(sym)); |
Mike Galbraith | d20ff6b | 2009-07-20 14:01:38 +0200 | [diff] [blame] | 803 | if (!kernel) { |
| 804 | self->adjust_symbols = (ehdr.e_type == ET_EXEC || |
Arnaldo Carvalho de Melo | 30d7a77 | 2009-07-02 21:24:14 -0300 | [diff] [blame] | 805 | elf_section_by_name(elf, &ehdr, &shdr, |
| 806 | ".gnu.prelink_undo", |
| 807 | NULL) != NULL); |
Mike Galbraith | d20ff6b | 2009-07-20 14:01:38 +0200 | [diff] [blame] | 808 | } else self->adjust_symbols = 0; |
| 809 | |
Ingo Molnar | 83a0944 | 2009-08-15 12:26:57 +0200 | [diff] [blame] | 810 | elf_symtab__for_each_symbol(syms, nr_syms, idx, sym) { |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 811 | struct symbol *f; |
Ingo Molnar | 83a0944 | 2009-08-15 12:26:57 +0200 | [diff] [blame] | 812 | const char *elf_name; |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 813 | char *demangled = NULL; |
Mike Galbraith | 6cfcc53 | 2009-07-02 08:08:36 +0200 | [diff] [blame] | 814 | int is_label = elf_sym__is_label(&sym); |
| 815 | const char *section_name; |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 816 | |
Mike Galbraith | 6cfcc53 | 2009-07-02 08:08:36 +0200 | [diff] [blame] | 817 | if (!is_label && !elf_sym__is_function(&sym)) |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 818 | continue; |
| 819 | |
| 820 | sec = elf_getscn(elf, sym.st_shndx); |
| 821 | if (!sec) |
| 822 | goto out_elf_end; |
| 823 | |
| 824 | gelf_getshdr(sec, &shdr); |
Mike Galbraith | 6cfcc53 | 2009-07-02 08:08:36 +0200 | [diff] [blame] | 825 | |
| 826 | if (is_label && !elf_sec__is_text(&shdr, secstrs)) |
| 827 | continue; |
| 828 | |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 829 | elf_name = elf_sym__name(&sym, symstrs); |
Mike Galbraith | 6cfcc53 | 2009-07-02 08:08:36 +0200 | [diff] [blame] | 830 | section_name = elf_sec__name(&shdr, secstrs); |
Ingo Molnar | 0b73da3 | 2009-06-06 15:48:52 +0200 | [diff] [blame] | 831 | |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 832 | if (kernel || kmodule) { |
| 833 | char dso_name[PATH_MAX]; |
| 834 | |
| 835 | if (strcmp(section_name, |
| 836 | curr_dso->short_name + dso_name_len) == 0) |
| 837 | goto new_symbol; |
| 838 | |
| 839 | if (strcmp(section_name, ".text") == 0) { |
| 840 | curr_map = map; |
| 841 | curr_dso = self; |
| 842 | goto new_symbol; |
| 843 | } |
| 844 | |
| 845 | snprintf(dso_name, sizeof(dso_name), |
| 846 | "%s%s", self->short_name, section_name); |
| 847 | |
Arnaldo Carvalho de Melo | 95011c6 | 2009-11-27 16:29:20 -0200 | [diff] [blame^] | 848 | curr_map = thread__find_map_by_name(thread, dso_name); |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 849 | if (curr_map == NULL) { |
| 850 | u64 start = sym.st_value; |
| 851 | |
| 852 | if (kmodule) |
| 853 | start += map->start + shdr.sh_offset; |
| 854 | |
Arnaldo Carvalho de Melo | 00a192b | 2009-10-30 16:28:24 -0200 | [diff] [blame] | 855 | curr_dso = dso__new(dso_name); |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 856 | if (curr_dso == NULL) |
| 857 | goto out_elf_end; |
Arnaldo Carvalho de Melo | 3610583 | 2009-11-27 16:29:16 -0200 | [diff] [blame] | 858 | curr_map = map__new2(start, curr_dso, |
| 859 | MAP__FUNCTION); |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 860 | if (curr_map == NULL) { |
| 861 | dso__delete(curr_dso); |
| 862 | goto out_elf_end; |
| 863 | } |
Arnaldo Carvalho de Melo | ed52ce2 | 2009-10-19 17:17:57 -0200 | [diff] [blame] | 864 | curr_map->map_ip = identity__map_ip; |
| 865 | curr_map->unmap_ip = identity__map_ip; |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 866 | curr_dso->origin = DSO__ORIG_KERNEL; |
Arnaldo Carvalho de Melo | 95011c6 | 2009-11-27 16:29:20 -0200 | [diff] [blame^] | 867 | __thread__insert_map(kthread, curr_map); |
Arnaldo Carvalho de Melo | b0da954 | 2009-11-27 16:29:14 -0200 | [diff] [blame] | 868 | dsos__add(&dsos__kernel, curr_dso); |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 869 | } else |
| 870 | curr_dso = curr_map->dso; |
| 871 | |
| 872 | goto new_symbol; |
Arnaldo Carvalho de Melo | af427bf | 2009-10-05 14:26:17 -0300 | [diff] [blame] | 873 | } |
| 874 | |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 875 | if (curr_dso->adjust_symbols) { |
Arnaldo Carvalho de Melo | 6beba7a | 2009-10-21 17:34:06 -0200 | [diff] [blame] | 876 | pr_debug2("adjusting symbol: st_value: %Lx sh_addr: " |
| 877 | "%Lx sh_offset: %Lx\n", (u64)sym.st_value, |
| 878 | (u64)shdr.sh_addr, (u64)shdr.sh_offset); |
Arnaldo Carvalho de Melo | f5812a7 | 2009-06-30 11:43:17 -0300 | [diff] [blame] | 879 | sym.st_value -= shdr.sh_addr - shdr.sh_offset; |
Arnaldo Carvalho de Melo | af427bf | 2009-10-05 14:26:17 -0300 | [diff] [blame] | 880 | } |
Arnaldo Carvalho de Melo | 28ac909 | 2009-07-20 14:14:12 -0300 | [diff] [blame] | 881 | /* |
| 882 | * We need to figure out if the object was created from C++ sources |
| 883 | * DWARF DW_compile_unit has this, but we don't always have access |
| 884 | * to it... |
| 885 | */ |
Ingo Molnar | 83a0944 | 2009-08-15 12:26:57 +0200 | [diff] [blame] | 886 | demangled = bfd_demangle(NULL, elf_name, DMGL_PARAMS | DMGL_ANSI); |
Arnaldo Carvalho de Melo | 28ac909 | 2009-07-20 14:14:12 -0300 | [diff] [blame] | 887 | if (demangled != NULL) |
Ingo Molnar | 83a0944 | 2009-08-15 12:26:57 +0200 | [diff] [blame] | 888 | elf_name = demangled; |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 889 | new_symbol: |
Arnaldo Carvalho de Melo | 00a192b | 2009-10-30 16:28:24 -0200 | [diff] [blame] | 890 | f = symbol__new(sym.st_value, sym.st_size, elf_name); |
Arnaldo Carvalho de Melo | 28ac909 | 2009-07-20 14:14:12 -0300 | [diff] [blame] | 891 | free(demangled); |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 892 | if (!f) |
| 893 | goto out_elf_end; |
| 894 | |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 895 | if (filter && filter(curr_map, f)) |
Arnaldo Carvalho de Melo | 00a192b | 2009-10-30 16:28:24 -0200 | [diff] [blame] | 896 | symbol__delete(f); |
Arnaldo Carvalho de Melo | 69ee69f | 2009-05-28 14:55:26 -0300 | [diff] [blame] | 897 | else { |
Arnaldo Carvalho de Melo | 6a4694a | 2009-11-27 16:29:17 -0200 | [diff] [blame] | 898 | symbols__insert(&curr_dso->symbols[curr_map->type], f); |
Arnaldo Carvalho de Melo | 69ee69f | 2009-05-28 14:55:26 -0300 | [diff] [blame] | 899 | nr++; |
| 900 | } |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 901 | } |
| 902 | |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 903 | /* |
| 904 | * For misannotated, zeroed, ASM function sizes. |
| 905 | */ |
| 906 | if (nr > 0) |
Arnaldo Carvalho de Melo | 6a4694a | 2009-11-27 16:29:17 -0200 | [diff] [blame] | 907 | symbols__fixup_end(&self->symbols[map->type]); |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 908 | err = nr; |
| 909 | out_elf_end: |
| 910 | elf_end(elf); |
| 911 | out_close: |
| 912 | return err; |
| 913 | } |
| 914 | |
Arnaldo Carvalho de Melo | 78075ca | 2009-11-20 20:51:26 -0200 | [diff] [blame] | 915 | static bool dso__build_id_equal(const struct dso *self, u8 *build_id) |
| 916 | { |
| 917 | return memcmp(self->build_id, build_id, sizeof(self->build_id)) == 0; |
| 918 | } |
| 919 | |
Arnaldo Carvalho de Melo | b0da954 | 2009-11-27 16:29:14 -0200 | [diff] [blame] | 920 | static bool __dsos__read_build_ids(struct list_head *head) |
Frederic Weisbecker | 57f395a | 2009-11-11 04:51:04 +0100 | [diff] [blame] | 921 | { |
Arnaldo Carvalho de Melo | e30a3d1 | 2009-11-18 20:20:51 -0200 | [diff] [blame] | 922 | bool have_build_id = false; |
Frederic Weisbecker | 57f395a | 2009-11-11 04:51:04 +0100 | [diff] [blame] | 923 | struct dso *pos; |
| 924 | |
Arnaldo Carvalho de Melo | b0da954 | 2009-11-27 16:29:14 -0200 | [diff] [blame] | 925 | list_for_each_entry(pos, head, node) |
Arnaldo Carvalho de Melo | e30a3d1 | 2009-11-18 20:20:51 -0200 | [diff] [blame] | 926 | if (filename__read_build_id(pos->long_name, pos->build_id, |
| 927 | sizeof(pos->build_id)) > 0) { |
| 928 | have_build_id = true; |
| 929 | pos->has_build_id = true; |
| 930 | } |
Frederic Weisbecker | 57f395a | 2009-11-11 04:51:04 +0100 | [diff] [blame] | 931 | |
Arnaldo Carvalho de Melo | e30a3d1 | 2009-11-18 20:20:51 -0200 | [diff] [blame] | 932 | return have_build_id; |
Frederic Weisbecker | 57f395a | 2009-11-11 04:51:04 +0100 | [diff] [blame] | 933 | } |
| 934 | |
Arnaldo Carvalho de Melo | b0da954 | 2009-11-27 16:29:14 -0200 | [diff] [blame] | 935 | bool dsos__read_build_ids(void) |
| 936 | { |
| 937 | return __dsos__read_build_ids(&dsos__kernel) || |
| 938 | __dsos__read_build_ids(&dsos__user); |
| 939 | } |
| 940 | |
Arnaldo Carvalho de Melo | fd7a346 | 2009-11-20 20:51:25 -0200 | [diff] [blame] | 941 | /* |
| 942 | * Align offset to 4 bytes as needed for note name and descriptor data. |
| 943 | */ |
| 944 | #define NOTE_ALIGN(n) (((n) + 3) & -4U) |
| 945 | |
Arnaldo Carvalho de Melo | 2643ce1 | 2009-11-03 21:46:10 -0200 | [diff] [blame] | 946 | int filename__read_build_id(const char *filename, void *bf, size_t size) |
Arnaldo Carvalho de Melo | 4d1e00a | 2009-08-05 19:02:49 -0300 | [diff] [blame] | 947 | { |
Arnaldo Carvalho de Melo | 2643ce1 | 2009-11-03 21:46:10 -0200 | [diff] [blame] | 948 | int fd, err = -1; |
Arnaldo Carvalho de Melo | 4d1e00a | 2009-08-05 19:02:49 -0300 | [diff] [blame] | 949 | GElf_Ehdr ehdr; |
| 950 | GElf_Shdr shdr; |
Arnaldo Carvalho de Melo | fd7a346 | 2009-11-20 20:51:25 -0200 | [diff] [blame] | 951 | Elf_Data *data; |
Arnaldo Carvalho de Melo | 4d1e00a | 2009-08-05 19:02:49 -0300 | [diff] [blame] | 952 | Elf_Scn *sec; |
Pekka Enberg | e57cfcd | 2009-11-22 12:29:44 +0200 | [diff] [blame] | 953 | Elf_Kind ek; |
Arnaldo Carvalho de Melo | fd7a346 | 2009-11-20 20:51:25 -0200 | [diff] [blame] | 954 | void *ptr; |
Arnaldo Carvalho de Melo | 4d1e00a | 2009-08-05 19:02:49 -0300 | [diff] [blame] | 955 | Elf *elf; |
Arnaldo Carvalho de Melo | 4d1e00a | 2009-08-05 19:02:49 -0300 | [diff] [blame] | 956 | |
Arnaldo Carvalho de Melo | 2643ce1 | 2009-11-03 21:46:10 -0200 | [diff] [blame] | 957 | if (size < BUILD_ID_SIZE) |
| 958 | goto out; |
| 959 | |
| 960 | fd = open(filename, O_RDONLY); |
Arnaldo Carvalho de Melo | 4d1e00a | 2009-08-05 19:02:49 -0300 | [diff] [blame] | 961 | if (fd < 0) |
| 962 | goto out; |
| 963 | |
Marti Raudsepp | 8408712 | 2009-10-24 19:10:36 +0300 | [diff] [blame] | 964 | elf = elf_begin(fd, PERF_ELF_C_READ_MMAP, NULL); |
Arnaldo Carvalho de Melo | 4d1e00a | 2009-08-05 19:02:49 -0300 | [diff] [blame] | 965 | if (elf == NULL) { |
Arnaldo Carvalho de Melo | 8d06367 | 2009-11-04 18:50:43 -0200 | [diff] [blame] | 966 | pr_debug2("%s: cannot read %s ELF file.\n", __func__, filename); |
Arnaldo Carvalho de Melo | 4d1e00a | 2009-08-05 19:02:49 -0300 | [diff] [blame] | 967 | goto out_close; |
| 968 | } |
| 969 | |
Pekka Enberg | e57cfcd | 2009-11-22 12:29:44 +0200 | [diff] [blame] | 970 | ek = elf_kind(elf); |
| 971 | if (ek != ELF_K_ELF) |
| 972 | goto out_elf_end; |
| 973 | |
Arnaldo Carvalho de Melo | 4d1e00a | 2009-08-05 19:02:49 -0300 | [diff] [blame] | 974 | if (gelf_getehdr(elf, &ehdr) == NULL) { |
Arnaldo Carvalho de Melo | 6beba7a | 2009-10-21 17:34:06 -0200 | [diff] [blame] | 975 | pr_err("%s: cannot get elf header.\n", __func__); |
Arnaldo Carvalho de Melo | 4d1e00a | 2009-08-05 19:02:49 -0300 | [diff] [blame] | 976 | goto out_elf_end; |
| 977 | } |
| 978 | |
Arnaldo Carvalho de Melo | 2643ce1 | 2009-11-03 21:46:10 -0200 | [diff] [blame] | 979 | sec = elf_section_by_name(elf, &ehdr, &shdr, |
| 980 | ".note.gnu.build-id", NULL); |
Arnaldo Carvalho de Melo | fd7a346 | 2009-11-20 20:51:25 -0200 | [diff] [blame] | 981 | if (sec == NULL) { |
| 982 | sec = elf_section_by_name(elf, &ehdr, &shdr, |
| 983 | ".notes", NULL); |
| 984 | if (sec == NULL) |
| 985 | goto out_elf_end; |
| 986 | } |
| 987 | |
| 988 | data = elf_getdata(sec, NULL); |
| 989 | if (data == NULL) |
Arnaldo Carvalho de Melo | 4d1e00a | 2009-08-05 19:02:49 -0300 | [diff] [blame] | 990 | goto out_elf_end; |
| 991 | |
Arnaldo Carvalho de Melo | fd7a346 | 2009-11-20 20:51:25 -0200 | [diff] [blame] | 992 | ptr = data->d_buf; |
| 993 | while (ptr < (data->d_buf + data->d_size)) { |
| 994 | GElf_Nhdr *nhdr = ptr; |
| 995 | int namesz = NOTE_ALIGN(nhdr->n_namesz), |
| 996 | descsz = NOTE_ALIGN(nhdr->n_descsz); |
| 997 | const char *name; |
| 998 | |
| 999 | ptr += sizeof(*nhdr); |
| 1000 | name = ptr; |
| 1001 | ptr += namesz; |
| 1002 | if (nhdr->n_type == NT_GNU_BUILD_ID && |
| 1003 | nhdr->n_namesz == sizeof("GNU")) { |
| 1004 | if (memcmp(name, "GNU", sizeof("GNU")) == 0) { |
| 1005 | memcpy(bf, ptr, BUILD_ID_SIZE); |
| 1006 | err = BUILD_ID_SIZE; |
| 1007 | break; |
| 1008 | } |
| 1009 | } |
| 1010 | ptr += descsz; |
| 1011 | } |
Arnaldo Carvalho de Melo | 2643ce1 | 2009-11-03 21:46:10 -0200 | [diff] [blame] | 1012 | out_elf_end: |
| 1013 | elf_end(elf); |
| 1014 | out_close: |
| 1015 | close(fd); |
| 1016 | out: |
| 1017 | return err; |
| 1018 | } |
| 1019 | |
Arnaldo Carvalho de Melo | f1617b4 | 2009-11-18 20:20:52 -0200 | [diff] [blame] | 1020 | int sysfs__read_build_id(const char *filename, void *build_id, size_t size) |
| 1021 | { |
| 1022 | int fd, err = -1; |
| 1023 | |
| 1024 | if (size < BUILD_ID_SIZE) |
| 1025 | goto out; |
| 1026 | |
| 1027 | fd = open(filename, O_RDONLY); |
| 1028 | if (fd < 0) |
| 1029 | goto out; |
| 1030 | |
| 1031 | while (1) { |
| 1032 | char bf[BUFSIZ]; |
| 1033 | GElf_Nhdr nhdr; |
| 1034 | int namesz, descsz; |
| 1035 | |
| 1036 | if (read(fd, &nhdr, sizeof(nhdr)) != sizeof(nhdr)) |
| 1037 | break; |
| 1038 | |
Arnaldo Carvalho de Melo | fd7a346 | 2009-11-20 20:51:25 -0200 | [diff] [blame] | 1039 | namesz = NOTE_ALIGN(nhdr.n_namesz); |
| 1040 | descsz = NOTE_ALIGN(nhdr.n_descsz); |
Arnaldo Carvalho de Melo | f1617b4 | 2009-11-18 20:20:52 -0200 | [diff] [blame] | 1041 | if (nhdr.n_type == NT_GNU_BUILD_ID && |
| 1042 | nhdr.n_namesz == sizeof("GNU")) { |
| 1043 | if (read(fd, bf, namesz) != namesz) |
| 1044 | break; |
| 1045 | if (memcmp(bf, "GNU", sizeof("GNU")) == 0) { |
| 1046 | if (read(fd, build_id, |
| 1047 | BUILD_ID_SIZE) == BUILD_ID_SIZE) { |
| 1048 | err = 0; |
| 1049 | break; |
| 1050 | } |
| 1051 | } else if (read(fd, bf, descsz) != descsz) |
| 1052 | break; |
| 1053 | } else { |
| 1054 | int n = namesz + descsz; |
| 1055 | if (read(fd, bf, n) != n) |
| 1056 | break; |
| 1057 | } |
| 1058 | } |
| 1059 | close(fd); |
| 1060 | out: |
| 1061 | return err; |
| 1062 | } |
| 1063 | |
Arnaldo Carvalho de Melo | 94cb9e3 | 2009-08-06 14:43:17 -0300 | [diff] [blame] | 1064 | char dso__symtab_origin(const struct dso *self) |
| 1065 | { |
| 1066 | static const char origin[] = { |
| 1067 | [DSO__ORIG_KERNEL] = 'k', |
| 1068 | [DSO__ORIG_JAVA_JIT] = 'j', |
| 1069 | [DSO__ORIG_FEDORA] = 'f', |
| 1070 | [DSO__ORIG_UBUNTU] = 'u', |
| 1071 | [DSO__ORIG_BUILDID] = 'b', |
| 1072 | [DSO__ORIG_DSO] = 'd', |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1073 | [DSO__ORIG_KMODULE] = 'K', |
Arnaldo Carvalho de Melo | 94cb9e3 | 2009-08-06 14:43:17 -0300 | [diff] [blame] | 1074 | }; |
| 1075 | |
| 1076 | if (self == NULL || self->origin == DSO__ORIG_NOT_FOUND) |
| 1077 | return '!'; |
| 1078 | return origin[self->origin]; |
| 1079 | } |
| 1080 | |
Arnaldo Carvalho de Melo | 6beba7a | 2009-10-21 17:34:06 -0200 | [diff] [blame] | 1081 | 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] | 1082 | { |
Arnaldo Carvalho de Melo | 4d1e00a | 2009-08-05 19:02:49 -0300 | [diff] [blame] | 1083 | int size = PATH_MAX; |
Arnaldo Carvalho de Melo | c338aee | 2009-11-20 20:51:27 -0200 | [diff] [blame] | 1084 | char *name; |
Arnaldo Carvalho de Melo | d3379ab | 2009-11-18 20:20:50 -0200 | [diff] [blame] | 1085 | u8 build_id[BUILD_ID_SIZE]; |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 1086 | int ret = -1; |
| 1087 | int fd; |
| 1088 | |
Arnaldo Carvalho de Melo | 3610583 | 2009-11-27 16:29:16 -0200 | [diff] [blame] | 1089 | dso__set_loaded(self, map->type); |
Arnaldo Carvalho de Melo | 66bd842 | 2009-10-28 21:51:21 -0200 | [diff] [blame] | 1090 | |
Arnaldo Carvalho de Melo | c338aee | 2009-11-20 20:51:27 -0200 | [diff] [blame] | 1091 | if (self->kernel) |
Arnaldo Carvalho de Melo | 95011c6 | 2009-11-27 16:29:20 -0200 | [diff] [blame^] | 1092 | return dso__load_kernel_sym(self, map, kthread, filter); |
Arnaldo Carvalho de Melo | c338aee | 2009-11-20 20:51:27 -0200 | [diff] [blame] | 1093 | |
| 1094 | name = malloc(size); |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 1095 | if (!name) |
| 1096 | return -1; |
| 1097 | |
Arnaldo Carvalho de Melo | 30d7a77 | 2009-07-02 21:24:14 -0300 | [diff] [blame] | 1098 | self->adjust_symbols = 0; |
Arnaldo Carvalho de Melo | f5812a7 | 2009-06-30 11:43:17 -0300 | [diff] [blame] | 1099 | |
Arnaldo Carvalho de Melo | 94cb9e3 | 2009-08-06 14:43:17 -0300 | [diff] [blame] | 1100 | if (strncmp(self->name, "/tmp/perf-", 10) == 0) { |
Arnaldo Carvalho de Melo | 6beba7a | 2009-10-21 17:34:06 -0200 | [diff] [blame] | 1101 | ret = dso__load_perf_map(self, map, filter); |
Arnaldo Carvalho de Melo | 94cb9e3 | 2009-08-06 14:43:17 -0300 | [diff] [blame] | 1102 | self->origin = ret > 0 ? DSO__ORIG_JAVA_JIT : |
| 1103 | DSO__ORIG_NOT_FOUND; |
| 1104 | return ret; |
| 1105 | } |
| 1106 | |
| 1107 | self->origin = DSO__ORIG_FEDORA - 1; |
Pekka Enberg | 80d496b | 2009-06-08 21:12:48 +0300 | [diff] [blame] | 1108 | |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 1109 | more: |
| 1110 | do { |
Arnaldo Carvalho de Melo | 94cb9e3 | 2009-08-06 14:43:17 -0300 | [diff] [blame] | 1111 | self->origin++; |
| 1112 | switch (self->origin) { |
| 1113 | case DSO__ORIG_FEDORA: |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1114 | snprintf(name, size, "/usr/lib/debug%s.debug", |
| 1115 | self->long_name); |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 1116 | break; |
Arnaldo Carvalho de Melo | 94cb9e3 | 2009-08-06 14:43:17 -0300 | [diff] [blame] | 1117 | case DSO__ORIG_UBUNTU: |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1118 | snprintf(name, size, "/usr/lib/debug%s", |
| 1119 | self->long_name); |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 1120 | break; |
Arnaldo Carvalho de Melo | 94cb9e3 | 2009-08-06 14:43:17 -0300 | [diff] [blame] | 1121 | case DSO__ORIG_BUILDID: |
Arnaldo Carvalho de Melo | d3379ab | 2009-11-18 20:20:50 -0200 | [diff] [blame] | 1122 | if (filename__read_build_id(self->long_name, build_id, |
| 1123 | sizeof(build_id))) { |
| 1124 | char build_id_hex[BUILD_ID_SIZE * 2 + 1]; |
| 1125 | |
| 1126 | build_id__sprintf(build_id, sizeof(build_id), |
| 1127 | build_id_hex); |
Arnaldo Carvalho de Melo | 4d1e00a | 2009-08-05 19:02:49 -0300 | [diff] [blame] | 1128 | snprintf(name, size, |
| 1129 | "/usr/lib/debug/.build-id/%.2s/%s.debug", |
Arnaldo Carvalho de Melo | d3379ab | 2009-11-18 20:20:50 -0200 | [diff] [blame] | 1130 | build_id_hex, build_id_hex + 2); |
| 1131 | if (self->has_build_id) |
| 1132 | goto compare_build_id; |
| 1133 | break; |
Arnaldo Carvalho de Melo | 4d1e00a | 2009-08-05 19:02:49 -0300 | [diff] [blame] | 1134 | } |
Arnaldo Carvalho de Melo | 94cb9e3 | 2009-08-06 14:43:17 -0300 | [diff] [blame] | 1135 | self->origin++; |
Arnaldo Carvalho de Melo | 4d1e00a | 2009-08-05 19:02:49 -0300 | [diff] [blame] | 1136 | /* Fall thru */ |
Arnaldo Carvalho de Melo | 94cb9e3 | 2009-08-06 14:43:17 -0300 | [diff] [blame] | 1137 | case DSO__ORIG_DSO: |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1138 | snprintf(name, size, "%s", self->long_name); |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 1139 | break; |
| 1140 | |
| 1141 | default: |
| 1142 | goto out; |
| 1143 | } |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 1144 | |
Arnaldo Carvalho de Melo | 8d06367 | 2009-11-04 18:50:43 -0200 | [diff] [blame] | 1145 | if (self->has_build_id) { |
Arnaldo Carvalho de Melo | d3379ab | 2009-11-18 20:20:50 -0200 | [diff] [blame] | 1146 | if (filename__read_build_id(name, build_id, |
| 1147 | sizeof(build_id)) < 0) |
Arnaldo Carvalho de Melo | 8d06367 | 2009-11-04 18:50:43 -0200 | [diff] [blame] | 1148 | goto more; |
Arnaldo Carvalho de Melo | 8d06367 | 2009-11-04 18:50:43 -0200 | [diff] [blame] | 1149 | compare_build_id: |
Arnaldo Carvalho de Melo | 78075ca | 2009-11-20 20:51:26 -0200 | [diff] [blame] | 1150 | if (!dso__build_id_equal(self, build_id)) |
Arnaldo Carvalho de Melo | 8d06367 | 2009-11-04 18:50:43 -0200 | [diff] [blame] | 1151 | goto more; |
| 1152 | } |
| 1153 | |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 1154 | fd = open(name, O_RDONLY); |
| 1155 | } while (fd < 0); |
| 1156 | |
Arnaldo Carvalho de Melo | 95011c6 | 2009-11-27 16:29:20 -0200 | [diff] [blame^] | 1157 | ret = dso__load_sym(self, map, NULL, name, fd, filter, 0, 0); |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 1158 | close(fd); |
| 1159 | |
| 1160 | /* |
| 1161 | * Some people seem to have debuginfo files _WITHOUT_ debug info!?!? |
| 1162 | */ |
| 1163 | if (!ret) |
| 1164 | goto more; |
| 1165 | |
Arnaldo Carvalho de Melo | a25e46c | 2009-07-11 12:18:36 -0300 | [diff] [blame] | 1166 | if (ret > 0) { |
Arnaldo Carvalho de Melo | 8216416 | 2009-11-16 13:48:11 -0200 | [diff] [blame] | 1167 | int nr_plt = dso__synthesize_plt_symbols(self, map, filter); |
Arnaldo Carvalho de Melo | a25e46c | 2009-07-11 12:18:36 -0300 | [diff] [blame] | 1168 | if (nr_plt > 0) |
| 1169 | ret += nr_plt; |
| 1170 | } |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 1171 | out: |
| 1172 | free(name); |
Arnaldo Carvalho de Melo | 1340e6b | 2009-08-11 17:04:36 -0300 | [diff] [blame] | 1173 | if (ret < 0 && strstr(self->name, " (deleted)") != NULL) |
| 1174 | return 0; |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 1175 | return ret; |
| 1176 | } |
| 1177 | |
Arnaldo Carvalho de Melo | 95011c6 | 2009-11-27 16:29:20 -0200 | [diff] [blame^] | 1178 | static struct symbol *thread__find_symbol(struct thread *self, u64 ip, |
| 1179 | enum map_type type, struct map **mapp, |
| 1180 | symbol_filter_t filter) |
Mike Galbraith | 6cfcc53 | 2009-07-02 08:08:36 +0200 | [diff] [blame] | 1181 | { |
Arnaldo Carvalho de Melo | 95011c6 | 2009-11-27 16:29:20 -0200 | [diff] [blame^] | 1182 | struct map *map = thread__find_map(self, type, ip); |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1183 | |
| 1184 | if (mapp) |
| 1185 | *mapp = map; |
| 1186 | |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 1187 | if (map) { |
| 1188 | ip = map->map_ip(map, ip); |
Arnaldo Carvalho de Melo | 6a4694a | 2009-11-27 16:29:17 -0200 | [diff] [blame] | 1189 | return map__find_symbol(map, ip, filter); |
Arnaldo Carvalho de Melo | 95011c6 | 2009-11-27 16:29:20 -0200 | [diff] [blame^] | 1190 | } |
Arnaldo Carvalho de Melo | 2e538c4 | 2009-10-07 13:48:56 -0300 | [diff] [blame] | 1191 | |
| 1192 | return NULL; |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1193 | } |
| 1194 | |
Arnaldo Carvalho de Melo | 23ea4a3 | 2009-11-27 16:29:19 -0200 | [diff] [blame] | 1195 | struct symbol *kernel_maps__find_function(u64 ip, struct map **mapp, |
| 1196 | symbol_filter_t filter) |
| 1197 | { |
Arnaldo Carvalho de Melo | 95011c6 | 2009-11-27 16:29:20 -0200 | [diff] [blame^] | 1198 | return thread__find_symbol(kthread, ip, MAP__FUNCTION, mapp, filter); |
Arnaldo Carvalho de Melo | 23ea4a3 | 2009-11-27 16:29:19 -0200 | [diff] [blame] | 1199 | } |
| 1200 | |
Arnaldo Carvalho de Melo | 95011c6 | 2009-11-27 16:29:20 -0200 | [diff] [blame^] | 1201 | static struct map *thread__find_map_by_name(struct thread *self, char *name) |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1202 | { |
| 1203 | struct rb_node *nd; |
| 1204 | |
Arnaldo Carvalho de Melo | 95011c6 | 2009-11-27 16:29:20 -0200 | [diff] [blame^] | 1205 | for (nd = rb_first(&self->maps[MAP__FUNCTION]); nd; nd = rb_next(nd)) { |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1206 | struct map *map = rb_entry(nd, struct map, rb_node); |
| 1207 | |
| 1208 | if (map->dso && strcmp(map->dso->name, name) == 0) |
| 1209 | return map; |
| 1210 | } |
| 1211 | |
| 1212 | return NULL; |
| 1213 | } |
| 1214 | |
Arnaldo Carvalho de Melo | c338aee | 2009-11-20 20:51:27 -0200 | [diff] [blame] | 1215 | static int dsos__set_modules_path_dir(char *dirname) |
Mike Galbraith | 6cfcc53 | 2009-07-02 08:08:36 +0200 | [diff] [blame] | 1216 | { |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1217 | struct dirent *dent; |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1218 | DIR *dir = opendir(dirname); |
Mike Galbraith | 6cfcc53 | 2009-07-02 08:08:36 +0200 | [diff] [blame] | 1219 | |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1220 | if (!dir) { |
Arnaldo Carvalho de Melo | 87f8ea4 | 2009-11-22 13:21:41 -0200 | [diff] [blame] | 1221 | pr_debug("%s: cannot open %s dir\n", __func__, dirname); |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1222 | return -1; |
Mike Galbraith | 6cfcc53 | 2009-07-02 08:08:36 +0200 | [diff] [blame] | 1223 | } |
| 1224 | |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1225 | while ((dent = readdir(dir)) != NULL) { |
| 1226 | char path[PATH_MAX]; |
Mike Galbraith | 6cfcc53 | 2009-07-02 08:08:36 +0200 | [diff] [blame] | 1227 | |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1228 | if (dent->d_type == DT_DIR) { |
| 1229 | if (!strcmp(dent->d_name, ".") || |
| 1230 | !strcmp(dent->d_name, "..")) |
| 1231 | continue; |
Mike Galbraith | 6cfcc53 | 2009-07-02 08:08:36 +0200 | [diff] [blame] | 1232 | |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1233 | snprintf(path, sizeof(path), "%s/%s", |
| 1234 | dirname, dent->d_name); |
Arnaldo Carvalho de Melo | c338aee | 2009-11-20 20:51:27 -0200 | [diff] [blame] | 1235 | if (dsos__set_modules_path_dir(path) < 0) |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1236 | goto failure; |
| 1237 | } else { |
| 1238 | char *dot = strrchr(dent->d_name, '.'), |
| 1239 | dso_name[PATH_MAX]; |
| 1240 | struct map *map; |
Arnaldo Carvalho de Melo | cfc10d3 | 2009-11-17 15:40:53 -0200 | [diff] [blame] | 1241 | char *long_name; |
Mike Galbraith | 6cfcc53 | 2009-07-02 08:08:36 +0200 | [diff] [blame] | 1242 | |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1243 | if (dot == NULL || strcmp(dot, ".ko")) |
| 1244 | continue; |
| 1245 | snprintf(dso_name, sizeof(dso_name), "[%.*s]", |
| 1246 | (int)(dot - dent->d_name), dent->d_name); |
Mike Galbraith | 6cfcc53 | 2009-07-02 08:08:36 +0200 | [diff] [blame] | 1247 | |
Arnaldo Carvalho de Melo | a2a99e8 | 2009-10-05 14:26:18 -0300 | [diff] [blame] | 1248 | strxfrchar(dso_name, '-', '_'); |
Arnaldo Carvalho de Melo | 95011c6 | 2009-11-27 16:29:20 -0200 | [diff] [blame^] | 1249 | map = thread__find_map_by_name(kthread, dso_name); |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1250 | if (map == NULL) |
| 1251 | continue; |
Mike Galbraith | 6cfcc53 | 2009-07-02 08:08:36 +0200 | [diff] [blame] | 1252 | |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1253 | snprintf(path, sizeof(path), "%s/%s", |
| 1254 | dirname, dent->d_name); |
Mike Galbraith | 6cfcc53 | 2009-07-02 08:08:36 +0200 | [diff] [blame] | 1255 | |
Arnaldo Carvalho de Melo | cfc10d3 | 2009-11-17 15:40:53 -0200 | [diff] [blame] | 1256 | long_name = strdup(path); |
| 1257 | if (long_name == NULL) |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1258 | goto failure; |
Arnaldo Carvalho de Melo | cfc10d3 | 2009-11-17 15:40:53 -0200 | [diff] [blame] | 1259 | dso__set_long_name(map->dso, long_name); |
Mike Galbraith | 6cfcc53 | 2009-07-02 08:08:36 +0200 | [diff] [blame] | 1260 | } |
Mike Galbraith | 6cfcc53 | 2009-07-02 08:08:36 +0200 | [diff] [blame] | 1261 | } |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1262 | |
Arnaldo Carvalho de Melo | c338aee | 2009-11-20 20:51:27 -0200 | [diff] [blame] | 1263 | return 0; |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1264 | failure: |
| 1265 | closedir(dir); |
| 1266 | return -1; |
Mike Galbraith | 6cfcc53 | 2009-07-02 08:08:36 +0200 | [diff] [blame] | 1267 | } |
| 1268 | |
Arnaldo Carvalho de Melo | c338aee | 2009-11-20 20:51:27 -0200 | [diff] [blame] | 1269 | static int dsos__set_modules_path(void) |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1270 | { |
| 1271 | struct utsname uts; |
| 1272 | char modules_path[PATH_MAX]; |
| 1273 | |
| 1274 | if (uname(&uts) < 0) |
| 1275 | return -1; |
| 1276 | |
| 1277 | snprintf(modules_path, sizeof(modules_path), "/lib/modules/%s/kernel", |
| 1278 | uts.release); |
| 1279 | |
Arnaldo Carvalho de Melo | c338aee | 2009-11-20 20:51:27 -0200 | [diff] [blame] | 1280 | return dsos__set_modules_path_dir(modules_path); |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1281 | } |
| 1282 | |
| 1283 | /* |
| 1284 | * Constructor variant for modules (where we know from /proc/modules where |
| 1285 | * they are loaded) and for vmlinux, where only after we load all the |
| 1286 | * symbols we'll know where it starts and ends. |
| 1287 | */ |
Arnaldo Carvalho de Melo | 3610583 | 2009-11-27 16:29:16 -0200 | [diff] [blame] | 1288 | 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] | 1289 | { |
| 1290 | struct map *self = malloc(sizeof(*self)); |
| 1291 | |
| 1292 | if (self != NULL) { |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1293 | /* |
Arnaldo Carvalho de Melo | afb7b4f | 2009-10-30 16:28:23 -0200 | [diff] [blame] | 1294 | * ->end will be filled after we load all the symbols |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1295 | */ |
Arnaldo Carvalho de Melo | 3610583 | 2009-11-27 16:29:16 -0200 | [diff] [blame] | 1296 | map__init(self, type, start, 0, 0, dso); |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1297 | } |
Arnaldo Carvalho de Melo | afb7b4f | 2009-10-30 16:28:23 -0200 | [diff] [blame] | 1298 | |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1299 | return self; |
| 1300 | } |
| 1301 | |
Arnaldo Carvalho de Melo | 95011c6 | 2009-11-27 16:29:20 -0200 | [diff] [blame^] | 1302 | static int thread__create_module_maps(struct thread *self) |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1303 | { |
| 1304 | char *line = NULL; |
| 1305 | size_t n; |
| 1306 | FILE *file = fopen("/proc/modules", "r"); |
| 1307 | struct map *map; |
| 1308 | |
| 1309 | if (file == NULL) |
| 1310 | return -1; |
| 1311 | |
| 1312 | while (!feof(file)) { |
| 1313 | char name[PATH_MAX]; |
| 1314 | u64 start; |
| 1315 | struct dso *dso; |
| 1316 | char *sep; |
| 1317 | int line_len; |
| 1318 | |
| 1319 | line_len = getline(&line, &n, file); |
| 1320 | if (line_len < 0) |
| 1321 | break; |
| 1322 | |
| 1323 | if (!line) |
| 1324 | goto out_failure; |
| 1325 | |
| 1326 | line[--line_len] = '\0'; /* \n */ |
| 1327 | |
| 1328 | sep = strrchr(line, 'x'); |
| 1329 | if (sep == NULL) |
| 1330 | continue; |
| 1331 | |
| 1332 | hex2u64(sep + 1, &start); |
| 1333 | |
| 1334 | sep = strchr(line, ' '); |
| 1335 | if (sep == NULL) |
| 1336 | continue; |
| 1337 | |
| 1338 | *sep = '\0'; |
| 1339 | |
| 1340 | snprintf(name, sizeof(name), "[%s]", line); |
Arnaldo Carvalho de Melo | 00a192b | 2009-10-30 16:28:24 -0200 | [diff] [blame] | 1341 | dso = dso__new(name); |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1342 | |
| 1343 | if (dso == NULL) |
| 1344 | goto out_delete_line; |
| 1345 | |
Arnaldo Carvalho de Melo | 3610583 | 2009-11-27 16:29:16 -0200 | [diff] [blame] | 1346 | map = map__new2(start, dso, MAP__FUNCTION); |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1347 | if (map == NULL) { |
| 1348 | dso__delete(dso); |
| 1349 | goto out_delete_line; |
| 1350 | } |
| 1351 | |
Arnaldo Carvalho de Melo | f1617b4 | 2009-11-18 20:20:52 -0200 | [diff] [blame] | 1352 | snprintf(name, sizeof(name), |
| 1353 | "/sys/module/%s/notes/.note.gnu.build-id", line); |
| 1354 | if (sysfs__read_build_id(name, dso->build_id, |
| 1355 | sizeof(dso->build_id)) == 0) |
| 1356 | dso->has_build_id = true; |
| 1357 | |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1358 | dso->origin = DSO__ORIG_KMODULE; |
Arnaldo Carvalho de Melo | 95011c6 | 2009-11-27 16:29:20 -0200 | [diff] [blame^] | 1359 | __thread__insert_map(self, map); |
Arnaldo Carvalho de Melo | b0da954 | 2009-11-27 16:29:14 -0200 | [diff] [blame] | 1360 | dsos__add(&dsos__kernel, dso); |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1361 | } |
| 1362 | |
| 1363 | free(line); |
| 1364 | fclose(file); |
| 1365 | |
Arnaldo Carvalho de Melo | c338aee | 2009-11-20 20:51:27 -0200 | [diff] [blame] | 1366 | return dsos__set_modules_path(); |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1367 | |
| 1368 | out_delete_line: |
| 1369 | free(line); |
| 1370 | out_failure: |
| 1371 | return -1; |
| 1372 | } |
| 1373 | |
Arnaldo Carvalho de Melo | 95011c6 | 2009-11-27 16:29:20 -0200 | [diff] [blame^] | 1374 | static int dso__load_vmlinux(struct dso *self, struct map *map, struct thread *thread, |
Arnaldo Carvalho de Melo | 6beba7a | 2009-10-21 17:34:06 -0200 | [diff] [blame] | 1375 | const char *vmlinux, symbol_filter_t filter) |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 1376 | { |
Arnaldo Carvalho de Melo | fbd733b | 2009-11-20 20:51:28 -0200 | [diff] [blame] | 1377 | int err = -1, fd; |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 1378 | |
Arnaldo Carvalho de Melo | fbd733b | 2009-11-20 20:51:28 -0200 | [diff] [blame] | 1379 | if (self->has_build_id) { |
| 1380 | u8 build_id[BUILD_ID_SIZE]; |
Arnaldo Carvalho de Melo | 66bd842 | 2009-10-28 21:51:21 -0200 | [diff] [blame] | 1381 | |
Arnaldo Carvalho de Melo | fbd733b | 2009-11-20 20:51:28 -0200 | [diff] [blame] | 1382 | if (filename__read_build_id(vmlinux, build_id, |
| 1383 | sizeof(build_id)) < 0) { |
| 1384 | pr_debug("No build_id in %s, ignoring it\n", vmlinux); |
| 1385 | return -1; |
| 1386 | } |
| 1387 | if (!dso__build_id_equal(self, build_id)) { |
| 1388 | char expected_build_id[BUILD_ID_SIZE * 2 + 1], |
| 1389 | vmlinux_build_id[BUILD_ID_SIZE * 2 + 1]; |
| 1390 | |
| 1391 | build_id__sprintf(self->build_id, |
| 1392 | sizeof(self->build_id), |
| 1393 | expected_build_id); |
| 1394 | build_id__sprintf(build_id, sizeof(build_id), |
| 1395 | vmlinux_build_id); |
| 1396 | pr_debug("build_id in %s is %s while expected is %s, " |
| 1397 | "ignoring it\n", vmlinux, vmlinux_build_id, |
| 1398 | expected_build_id); |
| 1399 | return -1; |
| 1400 | } |
| 1401 | } |
| 1402 | |
| 1403 | fd = open(vmlinux, O_RDONLY); |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 1404 | if (fd < 0) |
| 1405 | return -1; |
| 1406 | |
Arnaldo Carvalho de Melo | 3610583 | 2009-11-27 16:29:16 -0200 | [diff] [blame] | 1407 | dso__set_loaded(self, map->type); |
Arnaldo Carvalho de Melo | 95011c6 | 2009-11-27 16:29:20 -0200 | [diff] [blame^] | 1408 | err = dso__load_sym(self, map, thread, self->long_name, fd, filter, 1, 0); |
Arnaldo Carvalho de Melo | a2928c4 | 2009-05-28 14:55:04 -0300 | [diff] [blame] | 1409 | close(fd); |
| 1410 | |
| 1411 | return err; |
| 1412 | } |
| 1413 | |
Arnaldo Carvalho de Melo | c338aee | 2009-11-20 20:51:27 -0200 | [diff] [blame] | 1414 | static int dso__load_kernel_sym(struct dso *self, struct map *map, |
Arnaldo Carvalho de Melo | 95011c6 | 2009-11-27 16:29:20 -0200 | [diff] [blame^] | 1415 | struct thread *thread, symbol_filter_t filter) |
Arnaldo Carvalho de Melo | a827c87 | 2009-05-28 14:55:19 -0300 | [diff] [blame] | 1416 | { |
Arnaldo Carvalho de Melo | cc612d8 | 2009-11-23 16:39:10 -0200 | [diff] [blame] | 1417 | int err; |
| 1418 | bool is_kallsyms; |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1419 | |
Arnaldo Carvalho de Melo | cc612d8 | 2009-11-23 16:39:10 -0200 | [diff] [blame] | 1420 | if (vmlinux_path != NULL) { |
| 1421 | int i; |
| 1422 | pr_debug("Looking at the vmlinux_path (%d entries long)\n", |
| 1423 | vmlinux_path__nr_entries); |
| 1424 | for (i = 0; i < vmlinux_path__nr_entries; ++i) { |
Arnaldo Carvalho de Melo | 95011c6 | 2009-11-27 16:29:20 -0200 | [diff] [blame^] | 1425 | err = dso__load_vmlinux(self, map, thread, |
| 1426 | vmlinux_path[i], filter); |
Arnaldo Carvalho de Melo | cc612d8 | 2009-11-23 16:39:10 -0200 | [diff] [blame] | 1427 | if (err > 0) { |
| 1428 | pr_debug("Using %s for symbols\n", |
| 1429 | vmlinux_path[i]); |
| 1430 | dso__set_long_name(self, |
| 1431 | strdup(vmlinux_path[i])); |
| 1432 | goto out_fixup; |
| 1433 | } |
| 1434 | } |
| 1435 | } |
| 1436 | |
| 1437 | is_kallsyms = self->long_name[0] == '['; |
| 1438 | if (is_kallsyms) |
| 1439 | goto do_kallsyms; |
| 1440 | |
Arnaldo Carvalho de Melo | 95011c6 | 2009-11-27 16:29:20 -0200 | [diff] [blame^] | 1441 | err = dso__load_vmlinux(self, map, thread, self->long_name, filter); |
Arnaldo Carvalho de Melo | ef6ae72 | 2009-11-20 20:51:29 -0200 | [diff] [blame] | 1442 | if (err <= 0) { |
Arnaldo Carvalho de Melo | cc612d8 | 2009-11-23 16:39:10 -0200 | [diff] [blame] | 1443 | pr_info("The file %s cannot be used, " |
| 1444 | "trying to use /proc/kallsyms...", self->long_name); |
Arnaldo Carvalho de Melo | cc612d8 | 2009-11-23 16:39:10 -0200 | [diff] [blame] | 1445 | do_kallsyms: |
Arnaldo Carvalho de Melo | 95011c6 | 2009-11-27 16:29:20 -0200 | [diff] [blame^] | 1446 | err = dso__load_kallsyms(self, map, thread, filter); |
Arnaldo Carvalho de Melo | cc612d8 | 2009-11-23 16:39:10 -0200 | [diff] [blame] | 1447 | if (err > 0 && !is_kallsyms) |
Arnaldo Carvalho de Melo | ef6ae72 | 2009-11-20 20:51:29 -0200 | [diff] [blame] | 1448 | dso__set_long_name(self, strdup("[kernel.kallsyms]")); |
| 1449 | } |
Arnaldo Carvalho de Melo | a827c87 | 2009-05-28 14:55:19 -0300 | [diff] [blame] | 1450 | |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1451 | if (err > 0) { |
Arnaldo Carvalho de Melo | cc612d8 | 2009-11-23 16:39:10 -0200 | [diff] [blame] | 1452 | out_fixup: |
Arnaldo Carvalho de Melo | 6a4694a | 2009-11-27 16:29:17 -0200 | [diff] [blame] | 1453 | map__fixup_start(map); |
| 1454 | map__fixup_end(map); |
Arnaldo Carvalho de Melo | 439d473 | 2009-10-02 03:29:58 -0300 | [diff] [blame] | 1455 | } |
Arnaldo Carvalho de Melo | 94cb9e3 | 2009-08-06 14:43:17 -0300 | [diff] [blame] | 1456 | |
Arnaldo Carvalho de Melo | a827c87 | 2009-05-28 14:55:19 -0300 | [diff] [blame] | 1457 | return err; |
| 1458 | } |
| 1459 | |
Arnaldo Carvalho de Melo | b0da954 | 2009-11-27 16:29:14 -0200 | [diff] [blame] | 1460 | LIST_HEAD(dsos__user); |
| 1461 | LIST_HEAD(dsos__kernel); |
Arnaldo Carvalho de Melo | cc612d8 | 2009-11-23 16:39:10 -0200 | [diff] [blame] | 1462 | struct dso *vdso; |
Frederic Weisbecker | cd84c2a | 2009-08-12 10:03:49 +0200 | [diff] [blame] | 1463 | |
Arnaldo Carvalho de Melo | b0da954 | 2009-11-27 16:29:14 -0200 | [diff] [blame] | 1464 | static void dsos__add(struct list_head *head, struct dso *dso) |
Frederic Weisbecker | cd84c2a | 2009-08-12 10:03:49 +0200 | [diff] [blame] | 1465 | { |
Arnaldo Carvalho de Melo | b0da954 | 2009-11-27 16:29:14 -0200 | [diff] [blame] | 1466 | list_add_tail(&dso->node, head); |
Frederic Weisbecker | cd84c2a | 2009-08-12 10:03:49 +0200 | [diff] [blame] | 1467 | } |
| 1468 | |
Arnaldo Carvalho de Melo | b0da954 | 2009-11-27 16:29:14 -0200 | [diff] [blame] | 1469 | static struct dso *dsos__find(struct list_head *head, const char *name) |
Frederic Weisbecker | cd84c2a | 2009-08-12 10:03:49 +0200 | [diff] [blame] | 1470 | { |
| 1471 | struct dso *pos; |
| 1472 | |
Arnaldo Carvalho de Melo | b0da954 | 2009-11-27 16:29:14 -0200 | [diff] [blame] | 1473 | list_for_each_entry(pos, head, node) |
Frederic Weisbecker | cd84c2a | 2009-08-12 10:03:49 +0200 | [diff] [blame] | 1474 | if (strcmp(pos->name, name) == 0) |
| 1475 | return pos; |
| 1476 | return NULL; |
| 1477 | } |
| 1478 | |
Arnaldo Carvalho de Melo | 00a192b | 2009-10-30 16:28:24 -0200 | [diff] [blame] | 1479 | struct dso *dsos__findnew(const char *name) |
Frederic Weisbecker | cd84c2a | 2009-08-12 10:03:49 +0200 | [diff] [blame] | 1480 | { |
Arnaldo Carvalho de Melo | b0da954 | 2009-11-27 16:29:14 -0200 | [diff] [blame] | 1481 | struct dso *dso = dsos__find(&dsos__user, name); |
Frederic Weisbecker | cd84c2a | 2009-08-12 10:03:49 +0200 | [diff] [blame] | 1482 | |
Arnaldo Carvalho de Melo | e420499 | 2009-10-20 14:25:40 -0200 | [diff] [blame] | 1483 | if (!dso) { |
Arnaldo Carvalho de Melo | 00a192b | 2009-10-30 16:28:24 -0200 | [diff] [blame] | 1484 | dso = dso__new(name); |
Arnaldo Carvalho de Melo | cfc10d3 | 2009-11-17 15:40:53 -0200 | [diff] [blame] | 1485 | if (dso != NULL) { |
Arnaldo Carvalho de Melo | b0da954 | 2009-11-27 16:29:14 -0200 | [diff] [blame] | 1486 | dsos__add(&dsos__user, dso); |
Arnaldo Carvalho de Melo | cfc10d3 | 2009-11-17 15:40:53 -0200 | [diff] [blame] | 1487 | dso__set_basename(dso); |
| 1488 | } |
Arnaldo Carvalho de Melo | 66bd842 | 2009-10-28 21:51:21 -0200 | [diff] [blame] | 1489 | } |
Frederic Weisbecker | cd84c2a | 2009-08-12 10:03:49 +0200 | [diff] [blame] | 1490 | |
| 1491 | return dso; |
Frederic Weisbecker | cd84c2a | 2009-08-12 10:03:49 +0200 | [diff] [blame] | 1492 | } |
| 1493 | |
Arnaldo Carvalho de Melo | b0da954 | 2009-11-27 16:29:14 -0200 | [diff] [blame] | 1494 | static void __dsos__fprintf(struct list_head *head, FILE *fp) |
Frederic Weisbecker | cd84c2a | 2009-08-12 10:03:49 +0200 | [diff] [blame] | 1495 | { |
| 1496 | struct dso *pos; |
| 1497 | |
Arnaldo Carvalho de Melo | 95011c6 | 2009-11-27 16:29:20 -0200 | [diff] [blame^] | 1498 | list_for_each_entry(pos, head, node) { |
| 1499 | int i; |
| 1500 | for (i = 0; i < MAP__NR_TYPES; ++i) |
| 1501 | dso__fprintf(pos, i, fp); |
| 1502 | } |
Frederic Weisbecker | cd84c2a | 2009-08-12 10:03:49 +0200 | [diff] [blame] | 1503 | } |
| 1504 | |
Arnaldo Carvalho de Melo | b0da954 | 2009-11-27 16:29:14 -0200 | [diff] [blame] | 1505 | void dsos__fprintf(FILE *fp) |
| 1506 | { |
| 1507 | __dsos__fprintf(&dsos__kernel, fp); |
| 1508 | __dsos__fprintf(&dsos__user, fp); |
| 1509 | } |
| 1510 | |
| 1511 | static size_t __dsos__fprintf_buildid(struct list_head *head, FILE *fp) |
Arnaldo Carvalho de Melo | 9e03eb2 | 2009-11-16 16:32:44 -0200 | [diff] [blame] | 1512 | { |
| 1513 | struct dso *pos; |
| 1514 | size_t ret = 0; |
| 1515 | |
Arnaldo Carvalho de Melo | b0da954 | 2009-11-27 16:29:14 -0200 | [diff] [blame] | 1516 | list_for_each_entry(pos, head, node) { |
Arnaldo Carvalho de Melo | 9e03eb2 | 2009-11-16 16:32:44 -0200 | [diff] [blame] | 1517 | ret += dso__fprintf_buildid(pos, fp); |
Arnaldo Carvalho de Melo | 1124ba7 | 2009-11-16 21:45:25 -0200 | [diff] [blame] | 1518 | ret += fprintf(fp, " %s\n", pos->long_name); |
Arnaldo Carvalho de Melo | 9e03eb2 | 2009-11-16 16:32:44 -0200 | [diff] [blame] | 1519 | } |
| 1520 | return ret; |
| 1521 | } |
| 1522 | |
Arnaldo Carvalho de Melo | b0da954 | 2009-11-27 16:29:14 -0200 | [diff] [blame] | 1523 | size_t dsos__fprintf_buildid(FILE *fp) |
| 1524 | { |
| 1525 | return (__dsos__fprintf_buildid(&dsos__kernel, fp) + |
| 1526 | __dsos__fprintf_buildid(&dsos__user, fp)); |
| 1527 | } |
| 1528 | |
Arnaldo Carvalho de Melo | 95011c6 | 2009-11-27 16:29:20 -0200 | [diff] [blame^] | 1529 | static int thread__create_kernel_map(struct thread *self, const char *vmlinux) |
Frederic Weisbecker | cd84c2a | 2009-08-12 10:03:49 +0200 | [diff] [blame] | 1530 | { |
Arnaldo Carvalho de Melo | 4e06255 | 2009-11-27 16:29:18 -0200 | [diff] [blame] | 1531 | struct map *kmap; |
Arnaldo Carvalho de Melo | 95011c6 | 2009-11-27 16:29:20 -0200 | [diff] [blame^] | 1532 | struct dso *kernel = dso__new(vmlinux ?: "[kernel.kallsyms]"); |
Frederic Weisbecker | cd84c2a | 2009-08-12 10:03:49 +0200 | [diff] [blame] | 1533 | |
Arnaldo Carvalho de Melo | 2446042 | 2009-11-18 20:20:53 -0200 | [diff] [blame] | 1534 | if (kernel == NULL) |
Arnaldo Carvalho de Melo | c338aee | 2009-11-20 20:51:27 -0200 | [diff] [blame] | 1535 | return -1; |
| 1536 | |
Arnaldo Carvalho de Melo | 4e06255 | 2009-11-27 16:29:18 -0200 | [diff] [blame] | 1537 | kmap = map__new2(0, kernel, MAP__FUNCTION); |
| 1538 | if (kmap == NULL) |
Arnaldo Carvalho de Melo | c338aee | 2009-11-20 20:51:27 -0200 | [diff] [blame] | 1539 | goto out_delete_kernel_dso; |
| 1540 | |
Arnaldo Carvalho de Melo | 4e06255 | 2009-11-27 16:29:18 -0200 | [diff] [blame] | 1541 | kmap->map_ip = kmap->unmap_ip = identity__map_ip; |
| 1542 | kernel->short_name = "[kernel]"; |
| 1543 | kernel->kernel = 1; |
Arnaldo Carvalho de Melo | 2446042 | 2009-11-18 20:20:53 -0200 | [diff] [blame] | 1544 | |
Arnaldo Carvalho de Melo | 00a192b | 2009-10-30 16:28:24 -0200 | [diff] [blame] | 1545 | vdso = dso__new("[vdso]"); |
Arnaldo Carvalho de Melo | c338aee | 2009-11-20 20:51:27 -0200 | [diff] [blame] | 1546 | if (vdso == NULL) |
| 1547 | goto out_delete_kernel_map; |
Arnaldo Carvalho de Melo | 3610583 | 2009-11-27 16:29:16 -0200 | [diff] [blame] | 1548 | dso__set_loaded(vdso, MAP__FUNCTION); |
Frederic Weisbecker | cd84c2a | 2009-08-12 10:03:49 +0200 | [diff] [blame] | 1549 | |
Arnaldo Carvalho de Melo | 2446042 | 2009-11-18 20:20:53 -0200 | [diff] [blame] | 1550 | if (sysfs__read_build_id("/sys/kernel/notes", kernel->build_id, |
| 1551 | sizeof(kernel->build_id)) == 0) |
| 1552 | kernel->has_build_id = true; |
| 1553 | |
Arnaldo Carvalho de Melo | 95011c6 | 2009-11-27 16:29:20 -0200 | [diff] [blame^] | 1554 | __thread__insert_map(self, kmap); |
Arnaldo Carvalho de Melo | b0da954 | 2009-11-27 16:29:14 -0200 | [diff] [blame] | 1555 | dsos__add(&dsos__kernel, kernel); |
| 1556 | dsos__add(&dsos__user, vdso); |
Frederic Weisbecker | cd84c2a | 2009-08-12 10:03:49 +0200 | [diff] [blame] | 1557 | |
Arnaldo Carvalho de Melo | c338aee | 2009-11-20 20:51:27 -0200 | [diff] [blame] | 1558 | return 0; |
| 1559 | |
| 1560 | out_delete_kernel_map: |
Arnaldo Carvalho de Melo | 4e06255 | 2009-11-27 16:29:18 -0200 | [diff] [blame] | 1561 | map__delete(kmap); |
Arnaldo Carvalho de Melo | c338aee | 2009-11-20 20:51:27 -0200 | [diff] [blame] | 1562 | out_delete_kernel_dso: |
| 1563 | dso__delete(kernel); |
| 1564 | return -1; |
Arnaldo Carvalho de Melo | 2446042 | 2009-11-18 20:20:53 -0200 | [diff] [blame] | 1565 | } |
| 1566 | |
Arnaldo Carvalho de Melo | cc612d8 | 2009-11-23 16:39:10 -0200 | [diff] [blame] | 1567 | static void vmlinux_path__exit(void) |
Arnaldo Carvalho de Melo | 2446042 | 2009-11-18 20:20:53 -0200 | [diff] [blame] | 1568 | { |
Arnaldo Carvalho de Melo | cc612d8 | 2009-11-23 16:39:10 -0200 | [diff] [blame] | 1569 | while (--vmlinux_path__nr_entries >= 0) { |
| 1570 | free(vmlinux_path[vmlinux_path__nr_entries]); |
| 1571 | vmlinux_path[vmlinux_path__nr_entries] = NULL; |
| 1572 | } |
| 1573 | |
| 1574 | free(vmlinux_path); |
| 1575 | vmlinux_path = NULL; |
| 1576 | } |
| 1577 | |
| 1578 | static int vmlinux_path__init(void) |
| 1579 | { |
| 1580 | struct utsname uts; |
| 1581 | char bf[PATH_MAX]; |
| 1582 | |
| 1583 | if (uname(&uts) < 0) |
Arnaldo Carvalho de Melo | 2446042 | 2009-11-18 20:20:53 -0200 | [diff] [blame] | 1584 | return -1; |
| 1585 | |
Arnaldo Carvalho de Melo | cc612d8 | 2009-11-23 16:39:10 -0200 | [diff] [blame] | 1586 | vmlinux_path = malloc(sizeof(char *) * 5); |
| 1587 | if (vmlinux_path == NULL) |
| 1588 | return -1; |
| 1589 | |
| 1590 | vmlinux_path[vmlinux_path__nr_entries] = strdup("vmlinux"); |
| 1591 | if (vmlinux_path[vmlinux_path__nr_entries] == NULL) |
| 1592 | goto out_fail; |
| 1593 | ++vmlinux_path__nr_entries; |
| 1594 | vmlinux_path[vmlinux_path__nr_entries] = strdup("/boot/vmlinux"); |
| 1595 | if (vmlinux_path[vmlinux_path__nr_entries] == NULL) |
| 1596 | goto out_fail; |
| 1597 | ++vmlinux_path__nr_entries; |
| 1598 | snprintf(bf, sizeof(bf), "/boot/vmlinux-%s", uts.release); |
| 1599 | vmlinux_path[vmlinux_path__nr_entries] = strdup(bf); |
| 1600 | if (vmlinux_path[vmlinux_path__nr_entries] == NULL) |
| 1601 | goto out_fail; |
| 1602 | ++vmlinux_path__nr_entries; |
| 1603 | snprintf(bf, sizeof(bf), "/lib/modules/%s/build/vmlinux", uts.release); |
| 1604 | vmlinux_path[vmlinux_path__nr_entries] = strdup(bf); |
| 1605 | if (vmlinux_path[vmlinux_path__nr_entries] == NULL) |
| 1606 | goto out_fail; |
| 1607 | ++vmlinux_path__nr_entries; |
| 1608 | snprintf(bf, sizeof(bf), "/usr/lib/debug/lib/modules/%s/vmlinux", |
| 1609 | uts.release); |
| 1610 | vmlinux_path[vmlinux_path__nr_entries] = strdup(bf); |
| 1611 | if (vmlinux_path[vmlinux_path__nr_entries] == NULL) |
| 1612 | goto out_fail; |
| 1613 | ++vmlinux_path__nr_entries; |
| 1614 | |
| 1615 | return 0; |
| 1616 | |
| 1617 | out_fail: |
| 1618 | vmlinux_path__exit(); |
| 1619 | return -1; |
| 1620 | } |
| 1621 | |
Arnaldo Carvalho de Melo | 95011c6 | 2009-11-27 16:29:20 -0200 | [diff] [blame^] | 1622 | int symbol__init(struct symbol_conf *conf) |
Arnaldo Carvalho de Melo | cc612d8 | 2009-11-23 16:39:10 -0200 | [diff] [blame] | 1623 | { |
Arnaldo Carvalho de Melo | b32d133 | 2009-11-24 12:05:15 -0200 | [diff] [blame] | 1624 | const struct symbol_conf *pconf = conf ?: &symbol_conf__defaults; |
| 1625 | |
Arnaldo Carvalho de Melo | 95011c6 | 2009-11-27 16:29:20 -0200 | [diff] [blame^] | 1626 | elf_version(EV_CURRENT); |
Arnaldo Carvalho de Melo | b32d133 | 2009-11-24 12:05:15 -0200 | [diff] [blame] | 1627 | symbol__priv_size = pconf->priv_size; |
Arnaldo Carvalho de Melo | 95011c6 | 2009-11-27 16:29:20 -0200 | [diff] [blame^] | 1628 | thread__init(kthread, 0); |
Arnaldo Carvalho de Melo | b32d133 | 2009-11-24 12:05:15 -0200 | [diff] [blame] | 1629 | |
| 1630 | if (pconf->try_vmlinux_path && vmlinux_path__init() < 0) |
Arnaldo Carvalho de Melo | cc612d8 | 2009-11-23 16:39:10 -0200 | [diff] [blame] | 1631 | return -1; |
| 1632 | |
Arnaldo Carvalho de Melo | 95011c6 | 2009-11-27 16:29:20 -0200 | [diff] [blame^] | 1633 | if (thread__create_kernel_map(kthread, pconf->vmlinux_name) < 0) { |
Arnaldo Carvalho de Melo | cc612d8 | 2009-11-23 16:39:10 -0200 | [diff] [blame] | 1634 | vmlinux_path__exit(); |
| 1635 | return -1; |
| 1636 | } |
| 1637 | |
Arnaldo Carvalho de Melo | 95011c6 | 2009-11-27 16:29:20 -0200 | [diff] [blame^] | 1638 | if (pconf->use_modules && thread__create_module_maps(kthread) < 0) |
Arnaldo Carvalho de Melo | 87f8ea4 | 2009-11-22 13:21:41 -0200 | [diff] [blame] | 1639 | pr_debug("Failed to load list of modules in use, " |
| 1640 | "continuing...\n"); |
Arnaldo Carvalho de Melo | 90c8321 | 2009-11-21 14:31:24 -0200 | [diff] [blame] | 1641 | /* |
| 1642 | * Now that we have all the maps created, just set the ->end of them: |
| 1643 | */ |
Arnaldo Carvalho de Melo | 95011c6 | 2009-11-27 16:29:20 -0200 | [diff] [blame^] | 1644 | thread__fixup_maps_end(kthread); |
Arnaldo Carvalho de Melo | 6671cb1 | 2009-11-20 20:51:24 -0200 | [diff] [blame] | 1645 | return 0; |
Frederic Weisbecker | cd84c2a | 2009-08-12 10:03:49 +0200 | [diff] [blame] | 1646 | } |