~ [ source navigation ] ~ [ diff markup ] ~ [ identifier search ] ~

TOMOYO Linux Cross Reference
Linux/tools/perf/util/symbol.h

Version: ~ [ linux-5.12-rc5 ] ~ [ linux-5.11.11 ] ~ [ linux-5.10.27 ] ~ [ linux-5.9.16 ] ~ [ linux-5.8.18 ] ~ [ linux-5.7.19 ] ~ [ linux-5.6.19 ] ~ [ linux-5.5.19 ] ~ [ linux-5.4.109 ] ~ [ linux-5.3.18 ] ~ [ linux-5.2.21 ] ~ [ linux-5.1.21 ] ~ [ linux-5.0.21 ] ~ [ linux-4.20.17 ] ~ [ linux-4.19.184 ] ~ [ linux-4.18.20 ] ~ [ linux-4.17.19 ] ~ [ linux-4.16.18 ] ~ [ linux-4.15.18 ] ~ [ linux-4.14.228 ] ~ [ linux-4.13.16 ] ~ [ linux-4.12.14 ] ~ [ linux-4.11.12 ] ~ [ linux-4.10.17 ] ~ [ linux-4.9.264 ] ~ [ linux-4.8.17 ] ~ [ linux-4.7.10 ] ~ [ linux-4.6.7 ] ~ [ linux-4.5.7 ] ~ [ linux-4.4.264 ] ~ [ linux-4.3.6 ] ~ [ linux-4.2.8 ] ~ [ linux-4.1.52 ] ~ [ linux-4.0.9 ] ~ [ linux-3.18.140 ] ~ [ linux-3.16.85 ] ~ [ linux-3.14.79 ] ~ [ linux-3.12.74 ] ~ [ linux-3.10.108 ] ~ [ linux-2.6.32.71 ] ~ [ linux-2.6.0 ] ~ [ linux-2.4.37.11 ] ~ [ unix-v6-master ] ~ [ ccs-tools-1.8.5 ] ~ [ policy-sample ] ~
Architecture: ~ [ i386 ] ~ [ alpha ] ~ [ m68k ] ~ [ mips ] ~ [ ppc ] ~ [ sparc ] ~ [ sparc64 ] ~

  1 /* SPDX-License-Identifier: GPL-2.0 */
  2 #ifndef __PERF_SYMBOL
  3 #define __PERF_SYMBOL 1
  4 
  5 #include <linux/types.h>
  6 #include <stdbool.h>
  7 #include <stdint.h>
  8 #include "map.h"
  9 #include "../perf.h"
 10 #include <linux/list.h>
 11 #include <linux/rbtree.h>
 12 #include <stdio.h>
 13 #include <byteswap.h>
 14 #include <libgen.h>
 15 #include "build-id.h"
 16 #include "event.h"
 17 #include "path.h"
 18 
 19 #ifdef HAVE_LIBELF_SUPPORT
 20 #include <libelf.h>
 21 #include <gelf.h>
 22 #endif
 23 #include <elf.h>
 24 
 25 #include "dso.h"
 26 
 27 /*
 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:
 30  */
 31 #ifdef HAVE_LIBELF_MMAP_SUPPORT
 32 # define PERF_ELF_C_READ_MMAP ELF_C_READ_MMAP
 33 #else
 34 # define PERF_ELF_C_READ_MMAP ELF_C_READ
 35 #endif
 36 
 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);
 40 #endif
 41 
 42 #ifndef DMGL_PARAMS
 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 */
 46 #endif
 47 
 48 #define DSO__NAME_KALLSYMS      "[kernel.kallsyms]"
 49 #define DSO__NAME_KCORE         "[kernel.kcore]"
 50 
 51 /** struct symbol - symtab entry
 52  *
 53  * @ignore - resolvable but tools ignore it (e.g. idle routines)
 54  */
 55 struct symbol {
 56         struct rb_node  rb_node;
 57         u64             start;
 58         u64             end;
 59         u16             namelen;
 60         u8              type:4;
 61         u8              binding:4;
 62         u8              idle:1;
 63         u8              ignore:1;
 64         u8              inlined:1;
 65         u8              arch_sym;
 66         char            name[0];
 67 };
 68 
 69 void symbol__delete(struct symbol *sym);
 70 void symbols__delete(struct rb_root *symbols);
 71 
 72 /* symbols__for_each_entry - iterate over symbols (rb_root)
 73  *
 74  * @symbols: the rb_root of symbols
 75  * @pos: the 'struct symbol *' to use as a loop cursor
 76  * @nd: the 'struct rb_node *' to use as a temporary storage
 77  */
 78 #define symbols__for_each_entry(symbols, pos, nd)                       \
 79         for (nd = rb_first(symbols);                                    \
 80              nd && (pos = rb_entry(nd, struct symbol, rb_node));        \
 81              nd = rb_next(nd))
 82 
 83 static inline size_t symbol__size(const struct symbol *sym)
 84 {
 85         return sym->end - sym->start;
 86 }
 87 
 88 struct strlist;
 89 struct intlist;
 90 
 91 struct symbol_conf {
 92         unsigned short  priv_size;
 93         bool            try_vmlinux_path,
 94                         init_annotation,
 95                         force,
 96                         ignore_vmlinux,
 97                         ignore_vmlinux_buildid,
 98                         show_kernel_path,
 99                         use_modules,
100                         allow_aliases,
101                         sort_by_name,
102                         show_nr_samples,
103                         show_total_period,
104                         use_callchain,
105                         cumulate_callchain,
106                         show_branchflag_count,
107                         exclude_other,
108                         show_cpu_utilization,
109                         initialized,
110                         kptr_restrict,
111                         event_group,
112                         demangle,
113                         demangle_kernel,
114                         filter_relative,
115                         show_hist_headers,
116                         branch_callstack,
117                         has_filter,
118                         show_ref_callgraph,
119                         hide_unresolved,
120                         raw_trace,
121                         report_hierarchy,
122                         inline_name;
123         const char      *vmlinux_name,
124                         *kallsyms_name,
125                         *source_prefix,
126                         *field_sep;
127         const char      *default_guest_vmlinux_name,
128                         *default_guest_kallsyms,
129                         *default_guest_modules;
130         const char      *guestmount;
131         const char      *dso_list_str,
132                         *comm_list_str,
133                         *pid_list_str,
134                         *tid_list_str,
135                         *sym_list_str,
136                         *col_width_list_str,
137                         *bt_stop_list_str;
138        struct strlist   *dso_list,
139                         *comm_list,
140                         *sym_list,
141                         *dso_from_list,
142                         *dso_to_list,
143                         *sym_from_list,
144                         *sym_to_list,
145                         *bt_stop_list;
146         struct intlist  *pid_list,
147                         *tid_list;
148         const char      *symfs;
149 };
150 
151 extern struct symbol_conf symbol_conf;
152 
153 struct symbol_name_rb_node {
154         struct rb_node  rb_node;
155         struct symbol   sym;
156 };
157 
158 static inline int __symbol__join_symfs(char *bf, size_t size, const char *path)
159 {
160         return path__join(bf, size, symbol_conf.symfs, path);
161 }
162 
163 #define symbol__join_symfs(bf, path) __symbol__join_symfs(bf, sizeof(bf), path)
164 
165 extern int vmlinux_path__nr_entries;
166 extern char **vmlinux_path;
167 
168 static inline void *symbol__priv(struct symbol *sym)
169 {
170         return ((void *)sym) - symbol_conf.priv_size;
171 }
172 
173 struct ref_reloc_sym {
174         const char      *name;
175         u64             addr;
176         u64             unrelocated_addr;
177 };
178 
179 struct map_symbol {
180         struct map    *map;
181         struct symbol *sym;
182 };
183 
184 struct addr_map_symbol {
185         struct map    *map;
186         struct symbol *sym;
187         u64           addr;
188         u64           al_addr;
189         u64           phys_addr;
190 };
191 
192 struct branch_info {
193         struct addr_map_symbol from;
194         struct addr_map_symbol to;
195         struct branch_flags flags;
196         char                    *srcline_from;
197         char                    *srcline_to;
198 };
199 
200 struct mem_info {
201         struct addr_map_symbol  iaddr;
202         struct addr_map_symbol  daddr;
203         union perf_mem_data_src data_src;
204         refcount_t              refcnt;
205 };
206 
207 struct addr_location {
208         struct machine *machine;
209         struct thread *thread;
210         struct map    *map;
211         struct symbol *sym;
212         const char    *srcline;
213         u64           addr;
214         char          level;
215         u8            filtered;
216         u8            cpumode;
217         s32           cpu;
218         s32           socket;
219 };
220 
221 struct symsrc {
222         char *name;
223         int fd;
224         enum dso_binary_type type;
225 
226 #ifdef HAVE_LIBELF_SUPPORT
227         Elf *elf;
228         GElf_Ehdr ehdr;
229 
230         Elf_Scn *opdsec;
231         size_t opdidx;
232         GElf_Shdr opdshdr;
233 
234         Elf_Scn *symtab;
235         GElf_Shdr symshdr;
236 
237         Elf_Scn *dynsym;
238         size_t dynsym_idx;
239         GElf_Shdr dynshdr;
240 
241         bool adjust_symbols;
242         bool is_64_bit;
243 #endif
244 };
245 
246 void symsrc__destroy(struct symsrc *ss);
247 int symsrc__init(struct symsrc *ss, struct dso *dso, const char *name,
248                  enum dso_binary_type type);
249 bool symsrc__has_symtab(struct symsrc *ss);
250 bool symsrc__possibly_runtime(struct symsrc *ss);
251 
252 int dso__load(struct dso *dso, struct map *map);
253 int dso__load_vmlinux(struct dso *dso, struct map *map,
254                       const char *vmlinux, bool vmlinux_allocated);
255 int dso__load_vmlinux_path(struct dso *dso, struct map *map);
256 int __dso__load_kallsyms(struct dso *dso, const char *filename, struct map *map,
257                          bool no_kcore);
258 int dso__load_kallsyms(struct dso *dso, const char *filename, struct map *map);
259 
260 void dso__insert_symbol(struct dso *dso,
261                         struct symbol *sym);
262 
263 struct symbol *dso__find_symbol(struct dso *dso, u64 addr);
264 struct symbol *dso__find_symbol_by_name(struct dso *dso, const char *name);
265 
266 struct symbol *symbol__next_by_name(struct symbol *sym);
267 
268 struct symbol *dso__first_symbol(struct dso *dso);
269 struct symbol *dso__last_symbol(struct dso *dso);
270 struct symbol *dso__next_symbol(struct symbol *sym);
271 
272 enum dso_type dso__type_fd(int fd);
273 
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,
280                              size_t size);
281 
282 struct perf_env;
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);
287 
288 struct symbol *symbol__new(u64 start, u64 len, u8 binding, u8 type, 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__restricted_filename(const char *filename,
301                                  const char *restricted_filename);
302 int symbol__config_symfs(const struct option *opt __maybe_unused,
303                          const char *dir, int unset __maybe_unused);
304 
305 int dso__load_sym(struct dso *dso, struct map *map, struct symsrc *syms_ss,
306                   struct symsrc *runtime_ss, int kmodule);
307 int dso__synthesize_plt_symbols(struct dso *dso, struct symsrc *ss);
308 
309 char *dso__demangle_sym(struct dso *dso, int kmodule, const char *elf_name);
310 
311 void __symbols__insert(struct rb_root *symbols, struct symbol *sym, bool kernel);
312 void symbols__insert(struct rb_root *symbols, struct symbol *sym);
313 void symbols__fixup_duplicate(struct rb_root *symbols);
314 void symbols__fixup_end(struct rb_root *symbols);
315 void map_groups__fixup_end(struct map_groups *mg);
316 
317 typedef int (*mapfn_t)(u64 start, u64 len, u64 pgoff, void *data);
318 int file__read_maps(int fd, bool exe, mapfn_t mapfn, void *data,
319                     bool *is_64_bit);
320 
321 #define PERF_KCORE_EXTRACT "/tmp/perf-kcore-XXXXXX"
322 
323 struct kcore_extract {
324         char *kcore_filename;
325         u64 addr;
326         u64 offs;
327         u64 len;
328         char extract_filename[sizeof(PERF_KCORE_EXTRACT)];
329         int fd;
330 };
331 
332 int kcore_extract__create(struct kcore_extract *kce);
333 void kcore_extract__delete(struct kcore_extract *kce);
334 
335 int kcore_copy(const char *from_dir, const char *to_dir);
336 int compare_proc_modules(const char *from, const char *to);
337 
338 int setup_list(struct strlist **list, const char *list_str,
339                const char *list_name);
340 int setup_intlist(struct intlist **list, const char *list_str,
341                   const char *list_name);
342 
343 #ifdef HAVE_LIBELF_SUPPORT
344 bool elf__needs_adjust_symbols(GElf_Ehdr ehdr);
345 void arch__sym_update(struct symbol *s, GElf_Sym *sym);
346 #endif
347 
348 const char *arch__normalize_symbol_name(const char *name);
349 #define SYMBOL_A 0
350 #define SYMBOL_B 1
351 
352 int arch__compare_symbol_names(const char *namea, const char *nameb);
353 int arch__compare_symbol_names_n(const char *namea, const char *nameb,
354                                  unsigned int n);
355 int arch__choose_best_symbol(struct symbol *syma, struct symbol *symb);
356 
357 enum symbol_tag_include {
358         SYMBOL_TAG_INCLUDE__NONE = 0,
359         SYMBOL_TAG_INCLUDE__DEFAULT_ONLY
360 };
361 
362 int symbol__match_symbol_name(const char *namea, const char *nameb,
363                               enum symbol_tag_include includes);
364 
365 /* structure containing an SDT note's info */
366 struct sdt_note {
367         char *name;                     /* name of the note*/
368         char *provider;                 /* provider name */
369         char *args;
370         bool bit32;                     /* whether the location is 32 bits? */
371         union {                         /* location, base and semaphore addrs */
372                 Elf64_Addr a64[3];
373                 Elf32_Addr a32[3];
374         } addr;
375         struct list_head note_list;     /* SDT notes' list */
376 };
377 
378 int get_sdt_note_list(struct list_head *head, const char *target);
379 int cleanup_sdt_note_list(struct list_head *sdt_notes);
380 int sdt_notes__get_count(struct list_head *start);
381 
382 #define SDT_BASE_SCN ".stapsdt.base"
383 #define SDT_NOTE_SCN  ".note.stapsdt"
384 #define SDT_NOTE_TYPE 3
385 #define SDT_NOTE_NAME "stapsdt"
386 #define NR_ADDR 3
387 
388 struct mem_info *mem_info__new(void);
389 struct mem_info *mem_info__get(struct mem_info *mi);
390 void   mem_info__put(struct mem_info *mi);
391 
392 static inline void __mem_info__zput(struct mem_info **mi)
393 {
394         mem_info__put(*mi);
395         *mi = NULL;
396 }
397 
398 #define mem_info__zput(mi) __mem_info__zput(&mi)
399 
400 #endif /* __PERF_SYMBOL */
401 

~ [ source navigation ] ~ [ diff markup ] ~ [ identifier search ] ~

kernel.org | git.kernel.org | LWN.net | Project Home | Wiki (Japanese) | Wiki (English) | SVN repository | Mail admin

Linux® is a registered trademark of Linus Torvalds in the United States and other countries.
TOMOYO® is a registered trademark of NTT DATA CORPORATION.

osdn.jp