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