1 /* SPDX-License-Identifier: GPL-2.0 */
3 #define __PERF_SYMBOL 1
5 #include <linux/types.h>
10 #include <linux/list.h>
11 #include <linux/rbtree.h>
19 #ifdef HAVE_LIBELF_SUPPORT
28 * libelf 0.8.x and earlier do not support ELF_C_READ_MMAP;
29 * for newer versions we can use mmap to reduce memory usage:
31 #ifdef HAVE_LIBELF_MMAP_SUPPORT
32 # define PERF_ELF_C_READ_MMAP ELF_C_READ_MMAP
34 # define PERF_ELF_C_READ_MMAP ELF_C_READ
37 #ifdef HAVE_LIBELF_SUPPORT
38 Elf_Scn *elf_section_by_name(Elf *elf, GElf_Ehdr *ep,
39 GElf_Shdr *shp, const char *name, size_t *idx);
43 #define DMGL_NO_OPTS 0 /* For readability... */
44 #define DMGL_PARAMS (1 << 0) /* Include function args */
45 #define DMGL_ANSI (1 << 1) /* Include const, volatile, etc */
48 #define DSO__NAME_KALLSYMS "[kernel.kallsyms]"
49 #define DSO__NAME_KCORE "[kernel.kcore]"
51 /** struct symbol - symtab entry
53 * @ignore - resolvable but tools ignore it (e.g. idle routines)
56 struct rb_node rb_node;
67 void symbol__delete(struct symbol *sym);
68 void symbols__delete(struct rb_root *symbols);
70 /* symbols__for_each_entry - iterate over symbols (rb_root)
72 * @symbols: the rb_root of symbols
73 * @pos: the 'struct symbol *' to use as a loop cursor
74 * @nd: the 'struct rb_node *' to use as a temporary storage
76 #define symbols__for_each_entry(symbols, pos, nd) \
77 for (nd = rb_first(symbols); \
78 nd && (pos = rb_entry(nd, struct symbol, rb_node)); \
81 static inline size_t symbol__size(const struct symbol *sym)
83 return sym->end - sym->start;
90 unsigned short priv_size;
91 unsigned short nr_events;
92 bool try_vmlinux_path,
96 ignore_vmlinux_buildid,
105 show_branchflag_count,
107 show_cpu_utilization,
124 const char *vmlinux_name,
128 const char *default_guest_vmlinux_name,
129 *default_guest_kallsyms,
130 *default_guest_modules;
131 const char *guestmount;
132 const char *dso_list_str,
139 struct strlist *dso_list,
147 struct intlist *pid_list,
152 extern struct symbol_conf symbol_conf;
154 struct symbol_name_rb_node {
155 struct rb_node rb_node;
159 static inline int __symbol__join_symfs(char *bf, size_t size, const char *path)
161 return path__join(bf, size, symbol_conf.symfs, path);
164 #define symbol__join_symfs(bf, path) __symbol__join_symfs(bf, sizeof(bf), path)
166 extern int vmlinux_path__nr_entries;
167 extern char **vmlinux_path;
169 static inline void *symbol__priv(struct symbol *sym)
171 return ((void *)sym) - symbol_conf.priv_size;
174 struct ref_reloc_sym {
177 u64 unrelocated_addr;
185 struct addr_map_symbol {
194 struct addr_map_symbol from;
195 struct addr_map_symbol to;
196 struct branch_flags flags;
202 struct addr_map_symbol iaddr;
203 struct addr_map_symbol daddr;
204 union perf_mem_data_src data_src;
207 struct addr_location {
208 struct machine *machine;
209 struct thread *thread;
223 enum dso_binary_type type;
225 #ifdef HAVE_LIBELF_SUPPORT
245 void symsrc__destroy(struct symsrc *ss);
246 int symsrc__init(struct symsrc *ss, struct dso *dso, const char *name,
247 enum dso_binary_type type);
248 bool symsrc__has_symtab(struct symsrc *ss);
249 bool symsrc__possibly_runtime(struct symsrc *ss);
251 int dso__load(struct dso *dso, struct map *map);
252 int dso__load_vmlinux(struct dso *dso, struct map *map,
253 const char *vmlinux, bool vmlinux_allocated);
254 int dso__load_vmlinux_path(struct dso *dso, struct map *map);
255 int __dso__load_kallsyms(struct dso *dso, const char *filename, struct map *map,
257 int dso__load_kallsyms(struct dso *dso, const char *filename, struct map *map);
259 void dso__insert_symbol(struct dso *dso, enum map_type type,
262 struct symbol *dso__find_symbol(struct dso *dso, enum map_type type,
264 struct symbol *dso__find_symbol_by_name(struct dso *dso, enum map_type type,
266 struct symbol *symbol__next_by_name(struct symbol *sym);
268 struct symbol *dso__first_symbol(struct dso *dso, enum map_type type);
269 struct symbol *dso__last_symbol(struct dso *dso, enum map_type type);
270 struct symbol *dso__next_symbol(struct symbol *sym);
272 enum dso_type dso__type_fd(int fd);
274 int filename__read_build_id(const char *filename, void *bf, size_t size);
275 int sysfs__read_build_id(const char *filename, void *bf, size_t size);
276 int modules__parse(const char *filename, void *arg,
277 int (*process_module)(void *arg, const char *name,
278 u64 start, u64 size));
279 int filename__read_debuglink(const char *filename, char *debuglink,
283 int symbol__init(struct perf_env *env);
284 void symbol__exit(void);
285 void symbol__elf_init(void);
286 int symbol__annotation_init(void);
288 struct symbol *symbol__new(u64 start, u64 len, u8 binding, const char *name);
289 size_t __symbol__fprintf_symname_offs(const struct symbol *sym,
290 const struct addr_location *al,
291 bool unknown_as_addr,
292 bool print_offsets, FILE *fp);
293 size_t symbol__fprintf_symname_offs(const struct symbol *sym,
294 const struct addr_location *al, FILE *fp);
295 size_t __symbol__fprintf_symname(const struct symbol *sym,
296 const struct addr_location *al,
297 bool unknown_as_addr, FILE *fp);
298 size_t symbol__fprintf_symname(const struct symbol *sym, FILE *fp);
299 size_t symbol__fprintf(struct symbol *sym, FILE *fp);
300 bool symbol_type__is_a(char symbol_type, enum map_type map_type);
301 bool symbol__restricted_filename(const char *filename,
302 const char *restricted_filename);
303 int symbol__config_symfs(const struct option *opt __maybe_unused,
304 const char *dir, int unset __maybe_unused);
306 int dso__load_sym(struct dso *dso, struct map *map, struct symsrc *syms_ss,
307 struct symsrc *runtime_ss, int kmodule);
308 int dso__synthesize_plt_symbols(struct dso *dso, struct symsrc *ss,
311 char *dso__demangle_sym(struct dso *dso, int kmodule, const char *elf_name);
313 void __symbols__insert(struct rb_root *symbols, struct symbol *sym, bool kernel);
314 void symbols__insert(struct rb_root *symbols, struct symbol *sym);
315 void symbols__fixup_duplicate(struct rb_root *symbols);
316 void symbols__fixup_end(struct rb_root *symbols);
317 void __map_groups__fixup_end(struct map_groups *mg, enum map_type type);
319 typedef int (*mapfn_t)(u64 start, u64 len, u64 pgoff, void *data);
320 int file__read_maps(int fd, bool exe, mapfn_t mapfn, void *data,
323 #define PERF_KCORE_EXTRACT "/tmp/perf-kcore-XXXXXX"
325 struct kcore_extract {
326 char *kcore_filename;
330 char extract_filename[sizeof(PERF_KCORE_EXTRACT)];
334 int kcore_extract__create(struct kcore_extract *kce);
335 void kcore_extract__delete(struct kcore_extract *kce);
337 int kcore_copy(const char *from_dir, const char *to_dir);
338 int compare_proc_modules(const char *from, const char *to);
340 int setup_list(struct strlist **list, const char *list_str,
341 const char *list_name);
342 int setup_intlist(struct intlist **list, const char *list_str,
343 const char *list_name);
345 #ifdef HAVE_LIBELF_SUPPORT
346 bool elf__needs_adjust_symbols(GElf_Ehdr ehdr);
347 void arch__sym_update(struct symbol *s, GElf_Sym *sym);
350 const char *arch__normalize_symbol_name(const char *name);
354 void arch__symbols__fixup_end(struct symbol *p, struct symbol *c);
355 int arch__compare_symbol_names(const char *namea, const char *nameb);
356 int arch__compare_symbol_names_n(const char *namea, const char *nameb,
358 int arch__choose_best_symbol(struct symbol *syma, struct symbol *symb);
360 enum symbol_tag_include {
361 SYMBOL_TAG_INCLUDE__NONE = 0,
362 SYMBOL_TAG_INCLUDE__DEFAULT_ONLY
365 int symbol__match_symbol_name(const char *namea, const char *nameb,
366 enum symbol_tag_include includes);
368 /* structure containing an SDT note's info */
370 char *name; /* name of the note*/
371 char *provider; /* provider name */
373 bool bit32; /* whether the location is 32 bits? */
374 union { /* location, base and semaphore addrs */
378 struct list_head note_list; /* SDT notes' list */
381 int get_sdt_note_list(struct list_head *head, const char *target);
382 int cleanup_sdt_note_list(struct list_head *sdt_notes);
383 int sdt_notes__get_count(struct list_head *start);
385 #define SDT_BASE_SCN ".stapsdt.base"
386 #define SDT_NOTE_SCN ".note.stapsdt"
387 #define SDT_NOTE_TYPE 3
388 #define SDT_NOTE_NAME "stapsdt"
391 #endif /* __PERF_SYMBOL */