1 /* SPDX-License-Identifier: GPL-2.0 */ 2 #ifndef __PERF_MAP_H 3 #define __PERF_MAP_H 4 5 #include <linux/refcount.h> 6 #include <linux/compiler.h> 7 #include <linux/list.h> 8 #include <linux/rbtree.h> 9 #include <stdio.h> 10 #include <string.h> 11 #include <stdbool.h> 12 #include <linux/types.h> 13 14 struct dso; 15 struct maps; 16 struct machine; 17 18 struct map { 19 u64 start; 20 u64 end; 21 bool erange_warned:1; 22 bool priv:1; 23 u32 prot; 24 u64 pgoff; 25 u64 reloc; 26 27 /* ip -> dso rip */ 28 u64 (*map_ip)(const struct map *, u64); 29 /* dso rip -> ip */ 30 u64 (*unmap_ip)(const struct map *, u64); 31 32 struct dso *dso; 33 refcount_t refcnt; 34 u32 flags; 35 }; 36 37 struct kmap; 38 39 struct kmap *__map__kmap(struct map *map); 40 struct kmap *map__kmap(struct map *map); 41 struct maps *map__kmaps(struct map *map); 42 43 /* ip -> dso rip */ 44 u64 map__map_ip(const struct map *map, u64 ip); 45 /* dso rip -> ip */ 46 u64 map__unmap_ip(const struct map *map, u64 ip); 47 /* Returns ip */ 48 u64 identity__map_ip(const struct map *map __maybe_unused, u64 ip); 49 50 static inline struct dso *map__dso(const struct map *map) 51 { 52 return map->dso; 53 } 54 55 static inline size_t map__size(const struct map *map) 56 { 57 return map->end - map->start; 58 } 59 60 /* rip/ip <-> addr suitable for passing to `objdump --start-address=` */ 61 u64 map__rip_2objdump(struct map *map, u64 rip); 62 63 /* objdump address -> memory address */ 64 u64 map__objdump_2mem(struct map *map, u64 ip); 65 66 struct symbol; 67 struct thread; 68 69 /* map__for_each_symbol - iterate over the symbols in the given map 70 * 71 * @map: the 'struct map *' in which symbols are iterated 72 * @pos: the 'struct symbol *' to use as a loop cursor 73 * @n: the 'struct rb_node *' to use as a temporary storage 74 * Note: caller must ensure map->dso is not NULL (map is loaded). 75 */ 76 #define map__for_each_symbol(map, pos, n) \ 77 dso__for_each_symbol(map__dso(map), pos, n) 78 79 /* map__for_each_symbol_with_name - iterate over the symbols in the given map 80 * that have the given name 81 * 82 * @map: the 'struct map *' in which symbols are iterated 83 * @sym_name: the symbol name 84 * @pos: the 'struct symbol *' to use as a loop cursor 85 */ 86 #define __map__for_each_symbol_by_name(map, sym_name, pos) \ 87 for (pos = map__find_symbol_by_name(map, sym_name); \ 88 pos && \ 89 !symbol__match_symbol_name(pos->name, sym_name, \ 90 SYMBOL_TAG_INCLUDE__DEFAULT_ONLY); \ 91 pos = symbol__next_by_name(pos)) 92 93 #define map__for_each_symbol_by_name(map, sym_name, pos) \ 94 __map__for_each_symbol_by_name(map, sym_name, (pos)) 95 96 void map__init(struct map *map, 97 u64 start, u64 end, u64 pgoff, struct dso *dso); 98 99 struct dso_id; 100 struct build_id; 101 102 struct map *map__new(struct machine *machine, u64 start, u64 len, 103 u64 pgoff, struct dso_id *id, u32 prot, u32 flags, 104 struct build_id *bid, char *filename, struct thread *thread); 105 struct map *map__new2(u64 start, struct dso *dso); 106 void map__delete(struct map *map); 107 struct map *map__clone(struct map *map); 108 109 static inline struct map *map__get(struct map *map) 110 { 111 if (map) 112 refcount_inc(&map->refcnt); 113 return map; 114 } 115 116 void map__put(struct map *map); 117 118 static inline void __map__zput(struct map **map) 119 { 120 map__put(*map); 121 *map = NULL; 122 } 123 124 #define map__zput(map) __map__zput(&map) 125 126 size_t map__fprintf(struct map *map, FILE *fp); 127 size_t map__fprintf_dsoname(struct map *map, FILE *fp); 128 char *map__srcline(struct map *map, u64 addr, struct symbol *sym); 129 int map__fprintf_srcline(struct map *map, u64 addr, const char *prefix, 130 FILE *fp); 131 132 int map__load(struct map *map); 133 struct symbol *map__find_symbol(struct map *map, u64 addr); 134 struct symbol *map__find_symbol_by_name(struct map *map, const char *name); 135 void map__fixup_start(struct map *map); 136 void map__fixup_end(struct map *map); 137 138 int map__set_kallsyms_ref_reloc_sym(struct map *map, const char *symbol_name, 139 u64 addr); 140 141 bool __map__is_kernel(const struct map *map); 142 bool __map__is_extra_kernel_map(const struct map *map); 143 bool __map__is_bpf_prog(const struct map *map); 144 bool __map__is_bpf_image(const struct map *map); 145 bool __map__is_ool(const struct map *map); 146 147 static inline bool __map__is_kmodule(const struct map *map) 148 { 149 return !__map__is_kernel(map) && !__map__is_extra_kernel_map(map) && 150 !__map__is_bpf_prog(map) && !__map__is_ool(map) && 151 !__map__is_bpf_image(map); 152 } 153 154 bool map__has_symbols(const struct map *map); 155 156 bool map__contains_symbol(const struct map *map, const struct symbol *sym); 157 158 #define ENTRY_TRAMPOLINE_NAME "__entry_SYSCALL_64_trampoline" 159 160 static inline bool is_entry_trampoline(const char *name) 161 { 162 return !strcmp(name, ENTRY_TRAMPOLINE_NAME); 163 } 164 165 static inline bool is_bpf_image(const char *name) 166 { 167 return strncmp(name, "bpf_trampoline_", sizeof("bpf_trampoline_") - 1) == 0 || 168 strncmp(name, "bpf_dispatcher_", sizeof("bpf_dispatcher_") - 1) == 0; 169 } 170 171 static inline int is_anon_memory(const char *filename) 172 { 173 return !strcmp(filename, "//anon") || 174 !strncmp(filename, "/dev/zero", sizeof("/dev/zero") - 1) || 175 !strncmp(filename, "/anon_hugepage", sizeof("/anon_hugepage") - 1); 176 } 177 178 static inline int is_no_dso_memory(const char *filename) 179 { 180 return !strncmp(filename, "[stack", 6) || 181 !strncmp(filename, "/SYSV", 5) || 182 !strcmp(filename, "[heap]"); 183 } 184 #endif /* __PERF_MAP_H */ 185