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