1 #ifndef __PERF_MAP_H 2 #define __PERF_MAP_H 3 4 #include <linux/atomic.h> 5 #include <linux/compiler.h> 6 #include <linux/list.h> 7 #include <linux/rbtree.h> 8 #include <pthread.h> 9 #include <stdio.h> 10 #include <stdbool.h> 11 #include <linux/types.h> 12 13 enum map_type { 14 MAP__FUNCTION = 0, 15 MAP__VARIABLE, 16 }; 17 18 #define MAP__NR_TYPES (MAP__VARIABLE + 1) 19 20 extern const char *map_type__name[MAP__NR_TYPES]; 21 22 struct dso; 23 struct ip_callchain; 24 struct ref_reloc_sym; 25 struct map_groups; 26 struct machine; 27 struct perf_evsel; 28 29 struct map { 30 union { 31 struct rb_node rb_node; 32 struct list_head node; 33 }; 34 u64 start; 35 u64 end; 36 u8 /* enum map_type */ type; 37 bool referenced; 38 bool erange_warned; 39 u32 priv; 40 u32 prot; 41 u32 flags; 42 u64 pgoff; 43 u64 reloc; 44 u32 maj, min; /* only valid for MMAP2 record */ 45 u64 ino; /* only valid for MMAP2 record */ 46 u64 ino_generation;/* only valid for MMAP2 record */ 47 48 /* ip -> dso rip */ 49 u64 (*map_ip)(struct map *, u64); 50 /* dso rip -> ip */ 51 u64 (*unmap_ip)(struct map *, u64); 52 53 struct dso *dso; 54 struct map_groups *groups; 55 atomic_t refcnt; 56 }; 57 58 struct kmap { 59 struct ref_reloc_sym *ref_reloc_sym; 60 struct map_groups *kmaps; 61 }; 62 63 struct maps { 64 struct rb_root entries; 65 pthread_rwlock_t lock; 66 struct list_head removed_maps; 67 }; 68 69 struct map_groups { 70 struct maps maps[MAP__NR_TYPES]; 71 struct machine *machine; 72 atomic_t refcnt; 73 }; 74 75 struct map_groups *map_groups__new(struct machine *machine); 76 void map_groups__delete(struct map_groups *mg); 77 bool map_groups__empty(struct map_groups *mg); 78 79 static inline struct map_groups *map_groups__get(struct map_groups *mg) 80 { 81 if (mg) 82 atomic_inc(&mg->refcnt); 83 return mg; 84 } 85 86 void map_groups__put(struct map_groups *mg); 87 88 struct kmap *map__kmap(struct map *map); 89 struct map_groups *map__kmaps(struct map *map); 90 91 static inline u64 map__map_ip(struct map *map, u64 ip) 92 { 93 return ip - map->start + map->pgoff; 94 } 95 96 static inline u64 map__unmap_ip(struct map *map, u64 ip) 97 { 98 return ip + map->start - map->pgoff; 99 } 100 101 static inline u64 identity__map_ip(struct map *map __maybe_unused, u64 ip) 102 { 103 return ip; 104 } 105 106 107 /* rip/ip <-> addr suitable for passing to `objdump --start-address=` */ 108 u64 map__rip_2objdump(struct map *map, u64 rip); 109 110 /* objdump address -> memory address */ 111 u64 map__objdump_2mem(struct map *map, u64 ip); 112 113 struct symbol; 114 struct thread; 115 116 /* map__for_each_symbol - iterate over the symbols in the given map 117 * 118 * @map: the 'struct map *' in which symbols itereated 119 * @pos: the 'struct symbol *' to use as a loop cursor 120 * @n: the 'struct rb_node *' to use as a temporary storage 121 * Note: caller must ensure map->dso is not NULL (map is loaded). 122 */ 123 #define map__for_each_symbol(map, pos, n) \ 124 dso__for_each_symbol(map->dso, pos, n, map->type) 125 126 /* map__for_each_symbol_with_name - iterate over the symbols in the given map 127 * that have the given name 128 * 129 * @map: the 'struct map *' in which symbols itereated 130 * @sym_name: the symbol name 131 * @pos: the 'struct symbol *' to use as a loop cursor 132 * @filter: to use when loading the DSO 133 */ 134 #define __map__for_each_symbol_by_name(map, sym_name, pos, filter) \ 135 for (pos = map__find_symbol_by_name(map, sym_name, filter); \ 136 pos && arch__compare_symbol_names(pos->name, sym_name) == 0; \ 137 pos = symbol__next_by_name(pos)) 138 139 #define map__for_each_symbol_by_name(map, sym_name, pos) \ 140 __map__for_each_symbol_by_name(map, sym_name, (pos), NULL) 141 142 typedef int (*symbol_filter_t)(struct map *map, struct symbol *sym); 143 144 int arch__compare_symbol_names(const char *namea, const char *nameb); 145 void map__init(struct map *map, enum map_type type, 146 u64 start, u64 end, u64 pgoff, struct dso *dso); 147 struct map *map__new(struct machine *machine, u64 start, u64 len, 148 u64 pgoff, u32 pid, u32 d_maj, u32 d_min, u64 ino, 149 u64 ino_gen, u32 prot, u32 flags, 150 char *filename, enum map_type type, struct thread *thread); 151 struct map *map__new2(u64 start, struct dso *dso, enum map_type type); 152 void map__delete(struct map *map); 153 struct map *map__clone(struct map *map); 154 155 static inline struct map *map__get(struct map *map) 156 { 157 if (map) 158 atomic_inc(&map->refcnt); 159 return map; 160 } 161 162 void map__put(struct map *map); 163 164 int map__overlap(struct map *l, struct map *r); 165 size_t map__fprintf(struct map *map, FILE *fp); 166 size_t map__fprintf_dsoname(struct map *map, FILE *fp); 167 int map__fprintf_srcline(struct map *map, u64 addr, const char *prefix, 168 FILE *fp); 169 170 int map__load(struct map *map, symbol_filter_t filter); 171 struct symbol *map__find_symbol(struct map *map, 172 u64 addr, symbol_filter_t filter); 173 struct symbol *map__find_symbol_by_name(struct map *map, const char *name, 174 symbol_filter_t filter); 175 void map__fixup_start(struct map *map); 176 void map__fixup_end(struct map *map); 177 178 void map__reloc_vmlinux(struct map *map); 179 180 size_t __map_groups__fprintf_maps(struct map_groups *mg, enum map_type type, 181 FILE *fp); 182 void maps__insert(struct maps *maps, struct map *map); 183 void maps__remove(struct maps *maps, struct map *map); 184 struct map *maps__find(struct maps *maps, u64 addr); 185 struct map *maps__first(struct maps *maps); 186 struct map *map__next(struct map *map); 187 void map_groups__init(struct map_groups *mg, struct machine *machine); 188 void map_groups__exit(struct map_groups *mg); 189 int map_groups__clone(struct map_groups *mg, 190 struct map_groups *parent, enum map_type type); 191 size_t map_groups__fprintf(struct map_groups *mg, FILE *fp); 192 193 int maps__set_kallsyms_ref_reloc_sym(struct map **maps, const char *symbol_name, 194 u64 addr); 195 196 static inline void map_groups__insert(struct map_groups *mg, struct map *map) 197 { 198 maps__insert(&mg->maps[map->type], map); 199 map->groups = mg; 200 } 201 202 static inline void map_groups__remove(struct map_groups *mg, struct map *map) 203 { 204 maps__remove(&mg->maps[map->type], map); 205 } 206 207 static inline struct map *map_groups__find(struct map_groups *mg, 208 enum map_type type, u64 addr) 209 { 210 return maps__find(&mg->maps[type], addr); 211 } 212 213 static inline struct map *map_groups__first(struct map_groups *mg, 214 enum map_type type) 215 { 216 return maps__first(&mg->maps[type]); 217 } 218 219 static inline struct map *map_groups__next(struct map *map) 220 { 221 return map__next(map); 222 } 223 224 struct symbol *map_groups__find_symbol(struct map_groups *mg, 225 enum map_type type, u64 addr, 226 struct map **mapp, 227 symbol_filter_t filter); 228 229 struct symbol *map_groups__find_symbol_by_name(struct map_groups *mg, 230 enum map_type type, 231 const char *name, 232 struct map **mapp, 233 symbol_filter_t filter); 234 235 struct addr_map_symbol; 236 237 int map_groups__find_ams(struct addr_map_symbol *ams, symbol_filter_t filter); 238 239 static inline 240 struct symbol *map_groups__find_function_by_name(struct map_groups *mg, 241 const char *name, struct map **mapp, 242 symbol_filter_t filter) 243 { 244 return map_groups__find_symbol_by_name(mg, MAP__FUNCTION, name, mapp, filter); 245 } 246 247 int map_groups__fixup_overlappings(struct map_groups *mg, struct map *map, 248 FILE *fp); 249 250 struct map *map_groups__find_by_name(struct map_groups *mg, 251 enum map_type type, const char *name); 252 253 #endif /* __PERF_MAP_H */ 254