1#ifndef __PERF_SYMBOL
2#define __PERF_SYMBOL 1
3
4#include <linux/types.h>
5#include <stdbool.h>
6#include <stdint.h>
7#include "map.h"
8#include "../perf.h"
9#include <linux/list.h>
10#include <linux/rbtree.h>
11#include <stdio.h>
12#include <byteswap.h>
13#include <libgen.h>
14#include "build-id.h"
15#include "event.h"
16#include "path.h"
17
18#ifdef HAVE_LIBELF_SUPPORT
19#include <libelf.h>
20#include <gelf.h>
21#endif
22#include <elf.h>
23
24#include "dso.h"
25
26
27
28
29
30#ifdef HAVE_LIBELF_MMAP_SUPPORT
31# define PERF_ELF_C_READ_MMAP ELF_C_READ_MMAP
32#else
33# define PERF_ELF_C_READ_MMAP ELF_C_READ
34#endif
35
36#ifdef HAVE_LIBELF_SUPPORT
37Elf_Scn *elf_section_by_name(Elf *elf, GElf_Ehdr *ep,
38 GElf_Shdr *shp, const char *name, size_t *idx);
39#endif
40
41#ifndef DMGL_PARAMS
42#define DMGL_NO_OPTS 0
43#define DMGL_PARAMS (1 << 0)
44#define DMGL_ANSI (1 << 1)
45#endif
46
47#define DSO__NAME_KALLSYMS "[kernel.kallsyms]"
48#define DSO__NAME_KCORE "[kernel.kcore]"
49
50
51
52
53
54struct symbol {
55 struct rb_node rb_node;
56 u64 start;
57 u64 end;
58 u16 namelen;
59 u8 binding;
60 u8 idle:1;
61 u8 ignore:1;
62 u8 arch_sym;
63 char name[0];
64};
65
66void symbol__delete(struct symbol *sym);
67void symbols__delete(struct rb_root *symbols);
68
69
70
71
72
73
74
75#define symbols__for_each_entry(symbols, pos, nd) \
76 for (nd = rb_first(symbols); \
77 nd && (pos = rb_entry(nd, struct symbol, rb_node)); \
78 nd = rb_next(nd))
79
80static inline size_t symbol__size(const struct symbol *sym)
81{
82 return sym->end - sym->start;
83}
84
85struct strlist;
86struct intlist;
87
88struct symbol_conf {
89 unsigned short priv_size;
90 unsigned short nr_events;
91 bool try_vmlinux_path,
92 init_annotation,
93 force,
94 ignore_vmlinux,
95 ignore_vmlinux_buildid,
96 show_kernel_path,
97 use_modules,
98 allow_aliases,
99 sort_by_name,
100 show_nr_samples,
101 show_total_period,
102 use_callchain,
103 cumulate_callchain,
104 show_branchflag_count,
105 exclude_other,
106 show_cpu_utilization,
107 initialized,
108 kptr_restrict,
109 annotate_asm_raw,
110 annotate_src,
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
151extern struct symbol_conf symbol_conf;
152
153struct symbol_name_rb_node {
154 struct rb_node rb_node;
155 struct symbol sym;
156};
157
158static 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
165extern int vmlinux_path__nr_entries;
166extern char **vmlinux_path;
167
168static inline void *symbol__priv(struct symbol *sym)
169{
170 return ((void *)sym) - symbol_conf.priv_size;
171}
172
173struct ref_reloc_sym {
174 const char *name;
175 u64 addr;
176 u64 unrelocated_addr;
177};
178
179struct map_symbol {
180 struct map *map;
181 struct symbol *sym;
182};
183
184struct addr_map_symbol {
185 struct map *map;
186 struct symbol *sym;
187 u64 addr;
188 u64 al_addr;
189};
190
191struct branch_info {
192 struct addr_map_symbol from;
193 struct addr_map_symbol to;
194 struct branch_flags flags;
195 char *srcline_from;
196 char *srcline_to;
197};
198
199struct mem_info {
200 struct addr_map_symbol iaddr;
201 struct addr_map_symbol daddr;
202 union perf_mem_data_src data_src;
203};
204
205struct addr_location {
206 struct machine *machine;
207 struct thread *thread;
208 struct map *map;
209 struct symbol *sym;
210 u64 addr;
211 char level;
212 u8 filtered;
213 u8 cpumode;
214 s32 cpu;
215 s32 socket;
216};
217
218struct symsrc {
219 char *name;
220 int fd;
221 enum dso_binary_type type;
222
223#ifdef HAVE_LIBELF_SUPPORT
224 Elf *elf;
225 GElf_Ehdr ehdr;
226
227 Elf_Scn *opdsec;
228 size_t opdidx;
229 GElf_Shdr opdshdr;
230
231 Elf_Scn *symtab;
232 GElf_Shdr symshdr;
233
234 Elf_Scn *dynsym;
235 size_t dynsym_idx;
236 GElf_Shdr dynshdr;
237
238 bool adjust_symbols;
239 bool is_64_bit;
240#endif
241};
242
243void symsrc__destroy(struct symsrc *ss);
244int symsrc__init(struct symsrc *ss, struct dso *dso, const char *name,
245 enum dso_binary_type type);
246bool symsrc__has_symtab(struct symsrc *ss);
247bool symsrc__possibly_runtime(struct symsrc *ss);
248
249int dso__load(struct dso *dso, struct map *map);
250int dso__load_vmlinux(struct dso *dso, struct map *map,
251 const char *vmlinux, bool vmlinux_allocated);
252int dso__load_vmlinux_path(struct dso *dso, struct map *map);
253int __dso__load_kallsyms(struct dso *dso, const char *filename, struct map *map,
254 bool no_kcore);
255int dso__load_kallsyms(struct dso *dso, const char *filename, struct map *map);
256
257void dso__insert_symbol(struct dso *dso, enum map_type type,
258 struct symbol *sym);
259
260struct symbol *dso__find_symbol(struct dso *dso, enum map_type type,
261 u64 addr);
262struct symbol *dso__find_symbol_by_name(struct dso *dso, enum map_type type,
263 const char *name);
264struct symbol *symbol__next_by_name(struct symbol *sym);
265
266struct symbol *dso__first_symbol(struct dso *dso, enum map_type type);
267struct symbol *dso__last_symbol(struct dso *dso, enum map_type type);
268struct symbol *dso__next_symbol(struct symbol *sym);
269
270enum dso_type dso__type_fd(int fd);
271
272int filename__read_build_id(const char *filename, void *bf, size_t size);
273int sysfs__read_build_id(const char *filename, void *bf, size_t size);
274int modules__parse(const char *filename, void *arg,
275 int (*process_module)(void *arg, const char *name,
276 u64 start));
277int filename__read_debuglink(const char *filename, char *debuglink,
278 size_t size);
279
280struct perf_env;
281int symbol__init(struct perf_env *env);
282void symbol__exit(void);
283void symbol__elf_init(void);
284int symbol__annotation_init(void);
285
286struct symbol *symbol__new(u64 start, u64 len, u8 binding, const char *name);
287size_t __symbol__fprintf_symname_offs(const struct symbol *sym,
288 const struct addr_location *al,
289 bool unknown_as_addr,
290 bool print_offsets, FILE *fp);
291size_t symbol__fprintf_symname_offs(const struct symbol *sym,
292 const struct addr_location *al, FILE *fp);
293size_t __symbol__fprintf_symname(const struct symbol *sym,
294 const struct addr_location *al,
295 bool unknown_as_addr, FILE *fp);
296size_t symbol__fprintf_symname(const struct symbol *sym, FILE *fp);
297size_t symbol__fprintf(struct symbol *sym, FILE *fp);
298bool symbol_type__is_a(char symbol_type, enum map_type map_type);
299bool symbol__restricted_filename(const char *filename,
300 const char *restricted_filename);
301int symbol__config_symfs(const struct option *opt __maybe_unused,
302 const char *dir, int unset __maybe_unused);
303
304int dso__load_sym(struct dso *dso, struct map *map, struct symsrc *syms_ss,
305 struct symsrc *runtime_ss, int kmodule);
306int dso__synthesize_plt_symbols(struct dso *dso, struct symsrc *ss,
307 struct map *map);
308
309char *dso__demangle_sym(struct dso *dso, int kmodule, char *elf_name);
310
311void __symbols__insert(struct rb_root *symbols, struct symbol *sym, bool kernel);
312void symbols__insert(struct rb_root *symbols, struct symbol *sym);
313void symbols__fixup_duplicate(struct rb_root *symbols);
314void symbols__fixup_end(struct rb_root *symbols);
315void __map_groups__fixup_end(struct map_groups *mg, enum map_type type);
316
317typedef int (*mapfn_t)(u64 start, u64 len, u64 pgoff, void *data);
318int 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
323struct 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
332int kcore_extract__create(struct kcore_extract *kce);
333void kcore_extract__delete(struct kcore_extract *kce);
334
335int kcore_copy(const char *from_dir, const char *to_dir);
336int compare_proc_modules(const char *from, const char *to);
337
338int setup_list(struct strlist **list, const char *list_str,
339 const char *list_name);
340int setup_intlist(struct intlist **list, const char *list_str,
341 const char *list_name);
342
343#ifdef HAVE_LIBELF_SUPPORT
344bool elf__needs_adjust_symbols(GElf_Ehdr ehdr);
345void arch__sym_update(struct symbol *s, GElf_Sym *sym);
346#endif
347
348#define SYMBOL_A 0
349#define SYMBOL_B 1
350
351int arch__compare_symbol_names(const char *namea, const char *nameb);
352int arch__compare_symbol_names_n(const char *namea, const char *nameb,
353 unsigned int n);
354int arch__choose_best_symbol(struct symbol *syma, struct symbol *symb);
355
356enum symbol_tag_include {
357 SYMBOL_TAG_INCLUDE__NONE = 0,
358 SYMBOL_TAG_INCLUDE__DEFAULT_ONLY
359};
360
361int symbol__match_symbol_name(const char *namea, const char *nameb,
362 enum symbol_tag_include includes);
363
364
365struct sdt_note {
366 char *name;
367 char *provider;
368 char *args;
369 bool bit32;
370 union {
371 Elf64_Addr a64[3];
372 Elf32_Addr a32[3];
373 } addr;
374 struct list_head note_list;
375};
376
377int get_sdt_note_list(struct list_head *head, const char *target);
378int cleanup_sdt_note_list(struct list_head *sdt_notes);
379int sdt_notes__get_count(struct list_head *start);
380
381#define SDT_BASE_SCN ".stapsdt.base"
382#define SDT_NOTE_SCN ".note.stapsdt"
383#define SDT_NOTE_TYPE 3
384#define SDT_NOTE_NAME "stapsdt"
385#define NR_ADDR 3
386
387#endif
388