1
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
29
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
38Elf_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
44#define DMGL_PARAMS (1 << 0)
45#define DMGL_ANSI (1 << 1)
46#endif
47
48#define DSO__NAME_KALLSYMS "[kernel.kallsyms]"
49#define DSO__NAME_KCORE "[kernel.kcore]"
50
51
52
53
54
55struct 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 bool annotate2;
67 char name[0];
68};
69
70void symbol__delete(struct symbol *sym);
71void symbols__delete(struct rb_root *symbols);
72
73
74
75
76
77
78
79#define symbols__for_each_entry(symbols, pos, nd) \
80 for (nd = rb_first(symbols); \
81 nd && (pos = rb_entry(nd, struct symbol, rb_node)); \
82 nd = rb_next(nd))
83
84static inline size_t symbol__size(const struct symbol *sym)
85{
86 return sym->end - sym->start;
87}
88
89struct strlist;
90struct intlist;
91
92struct symbol_conf {
93 unsigned short priv_size;
94 bool try_vmlinux_path,
95 init_annotation,
96 force,
97 ignore_vmlinux,
98 ignore_vmlinux_buildid,
99 show_kernel_path,
100 use_modules,
101 allow_aliases,
102 sort_by_name,
103 show_nr_samples,
104 show_total_period,
105 use_callchain,
106 cumulate_callchain,
107 show_branchflag_count,
108 exclude_other,
109 show_cpu_utilization,
110 initialized,
111 kptr_restrict,
112 event_group,
113 demangle,
114 demangle_kernel,
115 filter_relative,
116 show_hist_headers,
117 branch_callstack,
118 has_filter,
119 show_ref_callgraph,
120 hide_unresolved,
121 raw_trace,
122 report_hierarchy,
123 inline_name;
124 const char *vmlinux_name,
125 *kallsyms_name,
126 *source_prefix,
127 *field_sep,
128 *graph_function;
129 const char *default_guest_vmlinux_name,
130 *default_guest_kallsyms,
131 *default_guest_modules;
132 const char *guestmount;
133 const char *dso_list_str,
134 *comm_list_str,
135 *pid_list_str,
136 *tid_list_str,
137 *sym_list_str,
138 *col_width_list_str,
139 *bt_stop_list_str;
140 struct strlist *dso_list,
141 *comm_list,
142 *sym_list,
143 *dso_from_list,
144 *dso_to_list,
145 *sym_from_list,
146 *sym_to_list,
147 *bt_stop_list;
148 struct intlist *pid_list,
149 *tid_list;
150 const char *symfs;
151};
152
153extern struct symbol_conf symbol_conf;
154
155struct symbol_name_rb_node {
156 struct rb_node rb_node;
157 struct symbol sym;
158};
159
160static inline int __symbol__join_symfs(char *bf, size_t size, const char *path)
161{
162 return path__join(bf, size, symbol_conf.symfs, path);
163}
164
165#define symbol__join_symfs(bf, path) __symbol__join_symfs(bf, sizeof(bf), path)
166
167extern int vmlinux_path__nr_entries;
168extern char **vmlinux_path;
169
170static inline void *symbol__priv(struct symbol *sym)
171{
172 return ((void *)sym) - symbol_conf.priv_size;
173}
174
175struct ref_reloc_sym {
176 const char *name;
177 u64 addr;
178 u64 unrelocated_addr;
179};
180
181struct map_symbol {
182 struct map *map;
183 struct symbol *sym;
184};
185
186struct addr_map_symbol {
187 struct map *map;
188 struct symbol *sym;
189 u64 addr;
190 u64 al_addr;
191 u64 phys_addr;
192};
193
194struct branch_info {
195 struct addr_map_symbol from;
196 struct addr_map_symbol to;
197 struct branch_flags flags;
198 char *srcline_from;
199 char *srcline_to;
200};
201
202struct mem_info {
203 struct addr_map_symbol iaddr;
204 struct addr_map_symbol daddr;
205 union perf_mem_data_src data_src;
206 refcount_t refcnt;
207};
208
209struct addr_location {
210 struct machine *machine;
211 struct thread *thread;
212 struct map *map;
213 struct symbol *sym;
214 const char *srcline;
215 u64 addr;
216 char level;
217 u8 filtered;
218 u8 cpumode;
219 s32 cpu;
220 s32 socket;
221};
222
223struct symsrc {
224 char *name;
225 int fd;
226 enum dso_binary_type type;
227
228#ifdef HAVE_LIBELF_SUPPORT
229 Elf *elf;
230 GElf_Ehdr ehdr;
231
232 Elf_Scn *opdsec;
233 size_t opdidx;
234 GElf_Shdr opdshdr;
235
236 Elf_Scn *symtab;
237 GElf_Shdr symshdr;
238
239 Elf_Scn *dynsym;
240 size_t dynsym_idx;
241 GElf_Shdr dynshdr;
242
243 bool adjust_symbols;
244 bool is_64_bit;
245#endif
246};
247
248void symsrc__destroy(struct symsrc *ss);
249int symsrc__init(struct symsrc *ss, struct dso *dso, const char *name,
250 enum dso_binary_type type);
251bool symsrc__has_symtab(struct symsrc *ss);
252bool symsrc__possibly_runtime(struct symsrc *ss);
253
254int dso__load(struct dso *dso, struct map *map);
255int dso__load_vmlinux(struct dso *dso, struct map *map,
256 const char *vmlinux, bool vmlinux_allocated);
257int dso__load_vmlinux_path(struct dso *dso, struct map *map);
258int __dso__load_kallsyms(struct dso *dso, const char *filename, struct map *map,
259 bool no_kcore);
260int dso__load_kallsyms(struct dso *dso, const char *filename, struct map *map);
261
262void dso__insert_symbol(struct dso *dso,
263 struct symbol *sym);
264
265struct symbol *dso__find_symbol(struct dso *dso, u64 addr);
266struct symbol *dso__find_symbol_by_name(struct dso *dso, const char *name);
267
268struct symbol *symbol__next_by_name(struct symbol *sym);
269
270struct symbol *dso__first_symbol(struct dso *dso);
271struct symbol *dso__last_symbol(struct dso *dso);
272struct symbol *dso__next_symbol(struct symbol *sym);
273
274enum dso_type dso__type_fd(int fd);
275
276int filename__read_build_id(const char *filename, void *bf, size_t size);
277int sysfs__read_build_id(const char *filename, void *bf, size_t size);
278int modules__parse(const char *filename, void *arg,
279 int (*process_module)(void *arg, const char *name,
280 u64 start, u64 size));
281int filename__read_debuglink(const char *filename, char *debuglink,
282 size_t size);
283
284struct perf_env;
285int symbol__init(struct perf_env *env);
286void symbol__exit(void);
287void symbol__elf_init(void);
288int symbol__annotation_init(void);
289
290struct symbol *symbol__new(u64 start, u64 len, u8 binding, u8 type, const char *name);
291size_t __symbol__fprintf_symname_offs(const struct symbol *sym,
292 const struct addr_location *al,
293 bool unknown_as_addr,
294 bool print_offsets, FILE *fp);
295size_t symbol__fprintf_symname_offs(const struct symbol *sym,
296 const struct addr_location *al, FILE *fp);
297size_t __symbol__fprintf_symname(const struct symbol *sym,
298 const struct addr_location *al,
299 bool unknown_as_addr, FILE *fp);
300size_t symbol__fprintf_symname(const struct symbol *sym, FILE *fp);
301size_t symbol__fprintf(struct symbol *sym, FILE *fp);
302bool symbol__restricted_filename(const char *filename,
303 const char *restricted_filename);
304int symbol__config_symfs(const struct option *opt __maybe_unused,
305 const char *dir, int unset __maybe_unused);
306
307int dso__load_sym(struct dso *dso, struct map *map, struct symsrc *syms_ss,
308 struct symsrc *runtime_ss, int kmodule);
309int dso__synthesize_plt_symbols(struct dso *dso, struct symsrc *ss);
310
311char *dso__demangle_sym(struct dso *dso, int kmodule, const char *elf_name);
312
313void __symbols__insert(struct rb_root *symbols, struct symbol *sym, bool kernel);
314void symbols__insert(struct rb_root *symbols, struct symbol *sym);
315void symbols__fixup_duplicate(struct rb_root *symbols);
316void symbols__fixup_end(struct rb_root *symbols);
317void map_groups__fixup_end(struct map_groups *mg);
318
319typedef int (*mapfn_t)(u64 start, u64 len, u64 pgoff, void *data);
320int file__read_maps(int fd, bool exe, mapfn_t mapfn, void *data,
321 bool *is_64_bit);
322
323#define PERF_KCORE_EXTRACT "/tmp/perf-kcore-XXXXXX"
324
325struct kcore_extract {
326 char *kcore_filename;
327 u64 addr;
328 u64 offs;
329 u64 len;
330 char extract_filename[sizeof(PERF_KCORE_EXTRACT)];
331 int fd;
332};
333
334int kcore_extract__create(struct kcore_extract *kce);
335void kcore_extract__delete(struct kcore_extract *kce);
336
337int kcore_copy(const char *from_dir, const char *to_dir);
338int compare_proc_modules(const char *from, const char *to);
339
340int setup_list(struct strlist **list, const char *list_str,
341 const char *list_name);
342int setup_intlist(struct intlist **list, const char *list_str,
343 const char *list_name);
344
345#ifdef HAVE_LIBELF_SUPPORT
346bool elf__needs_adjust_symbols(GElf_Ehdr ehdr);
347void arch__sym_update(struct symbol *s, GElf_Sym *sym);
348#endif
349
350const char *arch__normalize_symbol_name(const char *name);
351#define SYMBOL_A 0
352#define SYMBOL_B 1
353
354int arch__compare_symbol_names(const char *namea, const char *nameb);
355int arch__compare_symbol_names_n(const char *namea, const char *nameb,
356 unsigned int n);
357int arch__choose_best_symbol(struct symbol *syma, struct symbol *symb);
358
359enum symbol_tag_include {
360 SYMBOL_TAG_INCLUDE__NONE = 0,
361 SYMBOL_TAG_INCLUDE__DEFAULT_ONLY
362};
363
364int symbol__match_symbol_name(const char *namea, const char *nameb,
365 enum symbol_tag_include includes);
366
367
368struct sdt_note {
369 char *name;
370 char *provider;
371 char *args;
372 bool bit32;
373 union {
374 Elf64_Addr a64[3];
375 Elf32_Addr a32[3];
376 } addr;
377 struct list_head note_list;
378};
379
380int get_sdt_note_list(struct list_head *head, const char *target);
381int cleanup_sdt_note_list(struct list_head *sdt_notes);
382int sdt_notes__get_count(struct list_head *start);
383
384#define SDT_PROBES_SCN ".probes"
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"
389#define NR_ADDR 3
390
391enum {
392 SDT_NOTE_IDX_LOC = 0,
393 SDT_NOTE_IDX_BASE,
394 SDT_NOTE_IDX_REFCTR,
395};
396
397struct mem_info *mem_info__new(void);
398struct mem_info *mem_info__get(struct mem_info *mi);
399void mem_info__put(struct mem_info *mi);
400
401static inline void __mem_info__zput(struct mem_info **mi)
402{
403 mem_info__put(*mi);
404 *mi = NULL;
405}
406
407#define mem_info__zput(mi) __mem_info__zput(&mi)
408
409#endif
410