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 ip_callchain; 16 struct ref_reloc_sym; 17 struct map_groups; 18 struct machine; 19 struct evsel; 20 21 struct map { 22 union { 23 struct rb_node rb_node; 24 struct list_head node; 25 }; 26 u64 start; 27 u64 end; 28 bool erange_warned:1; 29 bool priv:1; 30 u32 prot; 31 u64 pgoff; 32 u64 reloc; 33 34 /* ip -> dso rip */ 35 u64 (*map_ip)(struct map *, u64); 36 /* dso rip -> ip */ 37 u64 (*unmap_ip)(struct map *, u64); 38 39 struct dso *dso; 40 refcount_t refcnt; 41 u32 flags; 42 }; 43 44 struct kmap; 45 46 struct kmap *__map__kmap(struct map *map); 47 struct kmap *map__kmap(struct map *map); 48 struct map_groups *map__kmaps(struct map *map); 49 50 static inline u64 map__map_ip(struct map *map, u64 ip) 51 { 52 return ip - map->start + map->pgoff; 53 } 54 55 static inline u64 map__unmap_ip(struct map *map, u64 ip) 56 { 57 return ip + map->start - map->pgoff; 58 } 59 60 static inline u64 identity__map_ip(struct map *map __maybe_unused, u64 ip) 61 { 62 return ip; 63 } 64 65 static inline size_t map__size(const struct map *map) 66 { 67 return map->end - map->start; 68 } 69 70 /* rip/ip <-> addr suitable for passing to `objdump --start-address=` */ 71 u64 map__rip_2objdump(struct map *map, u64 rip); 72 73 /* objdump address -> memory address */ 74 u64 map__objdump_2mem(struct map *map, u64 ip); 75 76 struct symbol; 77 struct thread; 78 79 /* map__for_each_symbol - iterate over the symbols in the given map 80 * 81 * @map: the 'struct map *' in which symbols itereated 82 * @pos: the 'struct symbol *' to use as a loop cursor 83 * @n: the 'struct rb_node *' to use as a temporary storage 84 * Note: caller must ensure map->dso is not NULL (map is loaded). 85 */ 86 #define map__for_each_symbol(map, pos, n) \ 87 dso__for_each_symbol(map->dso, pos, n) 88 89 /* map__for_each_symbol_with_name - iterate over the symbols in the given map 90 * that have the given name 91 * 92 * @map: the 'struct map *' in which symbols itereated 93 * @sym_name: the symbol name 94 * @pos: the 'struct symbol *' to use as a loop cursor 95 */ 96 #define __map__for_each_symbol_by_name(map, sym_name, pos) \ 97 for (pos = map__find_symbol_by_name(map, sym_name); \ 98 pos && \ 99 !symbol__match_symbol_name(pos->name, sym_name, \ 100 SYMBOL_TAG_INCLUDE__DEFAULT_ONLY); \ 101 pos = symbol__next_by_name(pos)) 102 103 #define map__for_each_symbol_by_name(map, sym_name, pos) \ 104 __map__for_each_symbol_by_name(map, sym_name, (pos)) 105 106 void map__init(struct map *map, 107 u64 start, u64 end, u64 pgoff, struct dso *dso); 108 109 struct dso_id; 110 111 struct map *map__new(struct machine *machine, u64 start, u64 len, 112 u64 pgoff, struct dso_id *id, u32 prot, u32 flags, 113 char *filename, struct thread *thread); 114 struct map *map__new2(u64 start, struct dso *dso); 115 void map__delete(struct map *map); 116 struct map *map__clone(struct map *map); 117 118 static inline struct map *map__get(struct map *map) 119 { 120 if (map) 121 refcount_inc(&map->refcnt); 122 return map; 123 } 124 125 void map__put(struct map *map); 126 127 static inline void __map__zput(struct map **map) 128 { 129 map__put(*map); 130 *map = NULL; 131 } 132 133 #define map__zput(map) __map__zput(&map) 134 135 size_t map__fprintf(struct map *map, FILE *fp); 136 size_t map__fprintf_dsoname(struct map *map, FILE *fp); 137 char *map__srcline(struct map *map, u64 addr, struct symbol *sym); 138 int map__fprintf_srcline(struct map *map, u64 addr, const char *prefix, 139 FILE *fp); 140 141 struct srccode_state; 142 143 int map__fprintf_srccode(struct map *map, u64 addr, 144 FILE *fp, struct srccode_state *state); 145 146 int map__load(struct map *map); 147 struct symbol *map__find_symbol(struct map *map, u64 addr); 148 struct symbol *map__find_symbol_by_name(struct map *map, const char *name); 149 void map__fixup_start(struct map *map); 150 void map__fixup_end(struct map *map); 151 152 void map__reloc_vmlinux(struct map *map); 153 154 int map__set_kallsyms_ref_reloc_sym(struct map *map, const char *symbol_name, 155 u64 addr); 156 157 bool __map__is_kernel(const struct map *map); 158 bool __map__is_extra_kernel_map(const struct map *map); 159 bool __map__is_bpf_prog(const struct map *map); 160 161 static inline bool __map__is_kmodule(const struct map *map) 162 { 163 return !__map__is_kernel(map) && !__map__is_extra_kernel_map(map) && 164 !__map__is_bpf_prog(map); 165 } 166 167 bool map__has_symbols(const struct map *map); 168 169 #define ENTRY_TRAMPOLINE_NAME "__entry_SYSCALL_64_trampoline" 170 171 static inline bool is_entry_trampoline(const char *name) 172 { 173 return !strcmp(name, ENTRY_TRAMPOLINE_NAME); 174 } 175 176 #endif /* __PERF_MAP_H */ 177