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