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