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 struct rb_node rb_node_name; 27 u64 start; 28 u64 end; 29 bool erange_warned; 30 u32 priv; 31 u32 prot; 32 u32 flags; 33 u64 pgoff; 34 u64 reloc; 35 u32 maj, min; /* only valid for MMAP2 record */ 36 u64 ino; /* only valid for MMAP2 record */ 37 u64 ino_generation;/* only valid for MMAP2 record */ 38 39 /* ip -> dso rip */ 40 u64 (*map_ip)(struct map *, u64); 41 /* dso rip -> ip */ 42 u64 (*unmap_ip)(struct map *, u64); 43 44 struct dso *dso; 45 struct map_groups *groups; 46 refcount_t refcnt; 47 }; 48 49 struct kmap; 50 51 struct kmap *__map__kmap(struct map *map); 52 struct kmap *map__kmap(struct map *map); 53 struct map_groups *map__kmaps(struct map *map); 54 55 static inline u64 map__map_ip(struct map *map, u64 ip) 56 { 57 return ip - map->start + map->pgoff; 58 } 59 60 static inline u64 map__unmap_ip(struct map *map, u64 ip) 61 { 62 return ip + map->start - map->pgoff; 63 } 64 65 static inline u64 identity__map_ip(struct map *map __maybe_unused, u64 ip) 66 { 67 return ip; 68 } 69 70 static inline size_t map__size(const struct map *map) 71 { 72 return map->end - map->start; 73 } 74 75 /* rip/ip <-> addr suitable for passing to `objdump --start-address=` */ 76 u64 map__rip_2objdump(struct map *map, u64 rip); 77 78 /* objdump address -> memory address */ 79 u64 map__objdump_2mem(struct map *map, u64 ip); 80 81 struct symbol; 82 struct thread; 83 84 /* map__for_each_symbol - iterate over the symbols in the given map 85 * 86 * @map: the 'struct map *' in which symbols itereated 87 * @pos: the 'struct symbol *' to use as a loop cursor 88 * @n: the 'struct rb_node *' to use as a temporary storage 89 * Note: caller must ensure map->dso is not NULL (map is loaded). 90 */ 91 #define map__for_each_symbol(map, pos, n) \ 92 dso__for_each_symbol(map->dso, pos, n) 93 94 /* map__for_each_symbol_with_name - iterate over the symbols in the given map 95 * that have the given name 96 * 97 * @map: the 'struct map *' in which symbols itereated 98 * @sym_name: the symbol name 99 * @pos: the 'struct symbol *' to use as a loop cursor 100 */ 101 #define __map__for_each_symbol_by_name(map, sym_name, pos) \ 102 for (pos = map__find_symbol_by_name(map, sym_name); \ 103 pos && \ 104 !symbol__match_symbol_name(pos->name, sym_name, \ 105 SYMBOL_TAG_INCLUDE__DEFAULT_ONLY); \ 106 pos = symbol__next_by_name(pos)) 107 108 #define map__for_each_symbol_by_name(map, sym_name, pos) \ 109 __map__for_each_symbol_by_name(map, sym_name, (pos)) 110 111 void map__init(struct map *map, 112 u64 start, u64 end, u64 pgoff, struct dso *dso); 113 struct map *map__new(struct machine *machine, u64 start, u64 len, 114 u64 pgoff, u32 d_maj, u32 d_min, u64 ino, 115 u64 ino_gen, u32 prot, u32 flags, 116 char *filename, struct thread *thread); 117 struct map *map__new2(u64 start, struct dso *dso); 118 void map__delete(struct map *map); 119 struct map *map__clone(struct map *map); 120 121 static inline struct map *map__get(struct map *map) 122 { 123 if (map) 124 refcount_inc(&map->refcnt); 125 return map; 126 } 127 128 void map__put(struct map *map); 129 130 static inline void __map__zput(struct map **map) 131 { 132 map__put(*map); 133 *map = NULL; 134 } 135 136 #define map__zput(map) __map__zput(&map) 137 138 size_t map__fprintf(struct map *map, FILE *fp); 139 size_t map__fprintf_dsoname(struct map *map, FILE *fp); 140 char *map__srcline(struct map *map, u64 addr, struct symbol *sym); 141 int map__fprintf_srcline(struct map *map, u64 addr, const char *prefix, 142 FILE *fp); 143 144 struct srccode_state; 145 146 int map__fprintf_srccode(struct map *map, u64 addr, 147 FILE *fp, struct srccode_state *state); 148 149 int map__load(struct map *map); 150 struct symbol *map__find_symbol(struct map *map, u64 addr); 151 struct symbol *map__find_symbol_by_name(struct map *map, const char *name); 152 void map__fixup_start(struct map *map); 153 void map__fixup_end(struct map *map); 154 155 void map__reloc_vmlinux(struct map *map); 156 157 int map__set_kallsyms_ref_reloc_sym(struct map *map, const char *symbol_name, 158 u64 addr); 159 160 bool __map__is_kernel(const struct map *map); 161 bool __map__is_extra_kernel_map(const struct map *map); 162 bool __map__is_bpf_prog(const struct map *map); 163 164 static inline bool __map__is_kmodule(const struct map *map) 165 { 166 return !__map__is_kernel(map) && !__map__is_extra_kernel_map(map) && 167 !__map__is_bpf_prog(map); 168 } 169 170 bool map__has_symbols(const struct map *map); 171 172 #define ENTRY_TRAMPOLINE_NAME "__entry_SYSCALL_64_trampoline" 173 174 static inline bool is_entry_trampoline(const char *name) 175 { 176 return !strcmp(name, ENTRY_TRAMPOLINE_NAME); 177 } 178 179 #endif /* __PERF_MAP_H */ 180