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 static inline struct kmap *map__kmap(struct map *map) 80 { 81 return (struct kmap *)(map + 1); 82 } 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 && strcmp(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 void map__init(struct map *map, enum map_type type, 138 u64 start, u64 end, u64 pgoff, struct dso *dso); 139 struct map *map__new(struct machine *machine, u64 start, u64 len, 140 u64 pgoff, u32 pid, u32 d_maj, u32 d_min, u64 ino, 141 u64 ino_gen, u32 prot, u32 flags, 142 char *filename, enum map_type type, struct thread *thread); 143 struct map *map__new2(u64 start, struct dso *dso, enum map_type type); 144 void map__delete(struct map *map); 145 struct map *map__clone(struct map *map); 146 int map__overlap(struct map *l, struct map *r); 147 size_t map__fprintf(struct map *map, FILE *fp); 148 size_t map__fprintf_dsoname(struct map *map, FILE *fp); 149 int map__fprintf_srcline(struct map *map, u64 addr, const char *prefix, 150 FILE *fp); 151 152 int map__load(struct map *map, symbol_filter_t filter); 153 struct symbol *map__find_symbol(struct map *map, 154 u64 addr, symbol_filter_t filter); 155 struct symbol *map__find_symbol_by_name(struct map *map, const char *name, 156 symbol_filter_t filter); 157 void map__fixup_start(struct map *map); 158 void map__fixup_end(struct map *map); 159 160 void map__reloc_vmlinux(struct map *map); 161 162 size_t __map_groups__fprintf_maps(struct map_groups *mg, enum map_type type, 163 FILE *fp); 164 void maps__insert(struct rb_root *maps, struct map *map); 165 void maps__remove(struct rb_root *maps, struct map *map); 166 struct map *maps__find(struct rb_root *maps, u64 addr); 167 struct map *maps__first(struct rb_root *maps); 168 struct map *maps__next(struct map *map); 169 void map_groups__init(struct map_groups *mg, struct machine *machine); 170 void map_groups__exit(struct map_groups *mg); 171 int map_groups__clone(struct map_groups *mg, 172 struct map_groups *parent, enum map_type type); 173 size_t map_groups__fprintf(struct map_groups *mg, FILE *fp); 174 175 int maps__set_kallsyms_ref_reloc_sym(struct map **maps, const char *symbol_name, 176 u64 addr); 177 178 static inline void map_groups__insert(struct map_groups *mg, struct map *map) 179 { 180 maps__insert(&mg->maps[map->type], map); 181 map->groups = mg; 182 } 183 184 static inline void map_groups__remove(struct map_groups *mg, struct map *map) 185 { 186 maps__remove(&mg->maps[map->type], map); 187 } 188 189 static inline struct map *map_groups__find(struct map_groups *mg, 190 enum map_type type, u64 addr) 191 { 192 return maps__find(&mg->maps[type], addr); 193 } 194 195 static inline struct map *map_groups__first(struct map_groups *mg, 196 enum map_type type) 197 { 198 return maps__first(&mg->maps[type]); 199 } 200 201 static inline struct map *map_groups__next(struct map *map) 202 { 203 return maps__next(map); 204 } 205 206 struct symbol *map_groups__find_symbol(struct map_groups *mg, 207 enum map_type type, u64 addr, 208 struct map **mapp, 209 symbol_filter_t filter); 210 211 struct symbol *map_groups__find_symbol_by_name(struct map_groups *mg, 212 enum map_type type, 213 const char *name, 214 struct map **mapp, 215 symbol_filter_t filter); 216 217 struct addr_map_symbol; 218 219 int map_groups__find_ams(struct addr_map_symbol *ams, symbol_filter_t filter); 220 221 static inline 222 struct symbol *map_groups__find_function_by_name(struct map_groups *mg, 223 const char *name, struct map **mapp, 224 symbol_filter_t filter) 225 { 226 return map_groups__find_symbol_by_name(mg, MAP__FUNCTION, name, mapp, filter); 227 } 228 229 int map_groups__fixup_overlappings(struct map_groups *mg, struct map *map, 230 FILE *fp); 231 232 struct map *map_groups__find_by_name(struct map_groups *mg, 233 enum map_type type, const char *name); 234 235 void map_groups__flush(struct map_groups *mg); 236 237 #endif /* __PERF_MAP_H */ 238