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 "util.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 arch_sym;
62 char name[0];
63};
64
65void symbol__delete(struct symbol *sym);
66void symbols__delete(struct rb_root *symbols);
67
68
69
70
71
72
73
74#define symbols__for_each_entry(symbols, pos, nd) \
75 for (nd = rb_first(symbols); \
76 nd && (pos = rb_entry(nd, struct symbol, rb_node)); \
77 nd = rb_next(nd))
78
79static inline size_t symbol__size(const struct symbol *sym)
80{
81 return sym->end - sym->start;
82}
83
84struct strlist;
85struct intlist;
86
87struct symbol_conf {
88 unsigned short priv_size;
89 unsigned short nr_events;
90 bool try_vmlinux_path,
91 init_annotation,
92 force,
93 ignore_vmlinux,
94 ignore_vmlinux_buildid,
95 show_kernel_path,
96 use_modules,
97 allow_aliases,
98 sort_by_name,
99 show_nr_samples,
100 show_total_period,
101 use_callchain,
102 cumulate_callchain,
103 exclude_other,
104 show_cpu_utilization,
105 initialized,
106 kptr_restrict,
107 annotate_asm_raw,
108 annotate_src,
109 event_group,
110 demangle,
111 demangle_kernel,
112 filter_relative,
113 show_hist_headers,
114 branch_callstack,
115 has_filter,
116 show_ref_callgraph,
117 hide_unresolved,
118 raw_trace,
119 report_hierarchy;
120 const char *vmlinux_name,
121 *kallsyms_name,
122 *source_prefix,
123 *field_sep;
124 const char *default_guest_vmlinux_name,
125 *default_guest_kallsyms,
126 *default_guest_modules;
127 const char *guestmount;
128 const char *dso_list_str,
129 *comm_list_str,
130 *pid_list_str,
131 *tid_list_str,
132 *sym_list_str,
133 *col_width_list_str;
134 struct strlist *dso_list,
135 *comm_list,
136 *sym_list,
137 *dso_from_list,
138 *dso_to_list,
139 *sym_from_list,
140 *sym_to_list;
141 struct intlist *pid_list,
142 *tid_list;
143 const char *symfs;
144};
145
146extern struct symbol_conf symbol_conf;
147
148struct symbol_name_rb_node {
149 struct rb_node rb_node;
150 struct symbol sym;
151};
152
153static inline int __symbol__join_symfs(char *bf, size_t size, const char *path)
154{
155 return path__join(bf, size, symbol_conf.symfs, path);
156}
157
158#define symbol__join_symfs(bf, path) __symbol__join_symfs(bf, sizeof(bf), path)
159
160extern int vmlinux_path__nr_entries;
161extern char **vmlinux_path;
162
163static inline void *symbol__priv(struct symbol *sym)
164{
165 return ((void *)sym) - symbol_conf.priv_size;
166}
167
168struct ref_reloc_sym {
169 const char *name;
170 u64 addr;
171 u64 unrelocated_addr;
172};
173
174struct map_symbol {
175 struct map *map;
176 struct symbol *sym;
177};
178
179struct addr_map_symbol {
180 struct map *map;
181 struct symbol *sym;
182 u64 addr;
183 u64 al_addr;
184};
185
186struct branch_info {
187 struct addr_map_symbol from;
188 struct addr_map_symbol to;
189 struct branch_flags flags;
190 char *srcline_from;
191 char *srcline_to;
192};
193
194struct mem_info {
195 struct addr_map_symbol iaddr;
196 struct addr_map_symbol daddr;
197 union perf_mem_data_src data_src;
198};
199
200struct addr_location {
201 struct machine *machine;
202 struct thread *thread;
203 struct map *map;
204 struct symbol *sym;
205 u64 addr;
206 char level;
207 u8 filtered;
208 u8 cpumode;
209 s32 cpu;
210 s32 socket;
211};
212
213struct symsrc {
214 char *name;
215 int fd;
216 enum dso_binary_type type;
217
218#ifdef HAVE_LIBELF_SUPPORT
219 Elf *elf;
220 GElf_Ehdr ehdr;
221
222 Elf_Scn *opdsec;
223 size_t opdidx;
224 GElf_Shdr opdshdr;
225
226 Elf_Scn *symtab;
227 GElf_Shdr symshdr;
228
229 Elf_Scn *dynsym;
230 size_t dynsym_idx;
231 GElf_Shdr dynshdr;
232
233 bool adjust_symbols;
234 bool is_64_bit;
235#endif
236};
237
238void symsrc__destroy(struct symsrc *ss);
239int symsrc__init(struct symsrc *ss, struct dso *dso, const char *name,
240 enum dso_binary_type type);
241bool symsrc__has_symtab(struct symsrc *ss);
242bool symsrc__possibly_runtime(struct symsrc *ss);
243
244int dso__load(struct dso *dso, struct map *map);
245int dso__load_vmlinux(struct dso *dso, struct map *map,
246 const char *vmlinux, bool vmlinux_allocated);
247int dso__load_vmlinux_path(struct dso *dso, struct map *map);
248int __dso__load_kallsyms(struct dso *dso, const char *filename, struct map *map,
249 bool no_kcore);
250int dso__load_kallsyms(struct dso *dso, const char *filename, struct map *map);
251
252void dso__insert_symbol(struct dso *dso, enum map_type type,
253 struct symbol *sym);
254
255struct symbol *dso__find_symbol(struct dso *dso, enum map_type type,
256 u64 addr);
257struct symbol *dso__find_symbol_by_name(struct dso *dso, enum map_type type,
258 const char *name);
259struct symbol *symbol__next_by_name(struct symbol *sym);
260
261struct symbol *dso__first_symbol(struct dso *dso, enum map_type type);
262struct symbol *dso__last_symbol(struct dso *dso, enum map_type type);
263struct symbol *dso__next_symbol(struct symbol *sym);
264
265enum dso_type dso__type_fd(int fd);
266
267int filename__read_build_id(const char *filename, void *bf, size_t size);
268int sysfs__read_build_id(const char *filename, void *bf, size_t size);
269int modules__parse(const char *filename, void *arg,
270 int (*process_module)(void *arg, const char *name,
271 u64 start));
272int filename__read_debuglink(const char *filename, char *debuglink,
273 size_t size);
274
275struct perf_env;
276int symbol__init(struct perf_env *env);
277void symbol__exit(void);
278void symbol__elf_init(void);
279int symbol__annotation_init(void);
280
281struct symbol *symbol__new(u64 start, u64 len, u8 binding, const char *name);
282size_t __symbol__fprintf_symname_offs(const struct symbol *sym,
283 const struct addr_location *al,
284 bool unknown_as_addr, FILE *fp);
285size_t symbol__fprintf_symname_offs(const struct symbol *sym,
286 const struct addr_location *al, FILE *fp);
287size_t __symbol__fprintf_symname(const struct symbol *sym,
288 const struct addr_location *al,
289 bool unknown_as_addr, FILE *fp);
290size_t symbol__fprintf_symname(const struct symbol *sym, FILE *fp);
291size_t symbol__fprintf(struct symbol *sym, FILE *fp);
292bool symbol_type__is_a(char symbol_type, enum map_type map_type);
293bool symbol__restricted_filename(const char *filename,
294 const char *restricted_filename);
295int symbol__config_symfs(const struct option *opt __maybe_unused,
296 const char *dir, int unset __maybe_unused);
297
298int dso__load_sym(struct dso *dso, struct map *map, struct symsrc *syms_ss,
299 struct symsrc *runtime_ss, int kmodule);
300int dso__synthesize_plt_symbols(struct dso *dso, struct symsrc *ss,
301 struct map *map);
302
303void __symbols__insert(struct rb_root *symbols, struct symbol *sym, bool kernel);
304void symbols__insert(struct rb_root *symbols, struct symbol *sym);
305void symbols__fixup_duplicate(struct rb_root *symbols);
306void symbols__fixup_end(struct rb_root *symbols);
307void __map_groups__fixup_end(struct map_groups *mg, enum map_type type);
308
309typedef int (*mapfn_t)(u64 start, u64 len, u64 pgoff, void *data);
310int file__read_maps(int fd, bool exe, mapfn_t mapfn, void *data,
311 bool *is_64_bit);
312
313#define PERF_KCORE_EXTRACT "/tmp/perf-kcore-XXXXXX"
314
315struct kcore_extract {
316 char *kcore_filename;
317 u64 addr;
318 u64 offs;
319 u64 len;
320 char extract_filename[sizeof(PERF_KCORE_EXTRACT)];
321 int fd;
322};
323
324int kcore_extract__create(struct kcore_extract *kce);
325void kcore_extract__delete(struct kcore_extract *kce);
326
327int kcore_copy(const char *from_dir, const char *to_dir);
328int compare_proc_modules(const char *from, const char *to);
329
330int setup_list(struct strlist **list, const char *list_str,
331 const char *list_name);
332int setup_intlist(struct intlist **list, const char *list_str,
333 const char *list_name);
334
335#ifdef HAVE_LIBELF_SUPPORT
336bool elf__needs_adjust_symbols(GElf_Ehdr ehdr);
337void arch__sym_update(struct symbol *s, GElf_Sym *sym);
338#endif
339
340#define SYMBOL_A 0
341#define SYMBOL_B 1
342
343int arch__choose_best_symbol(struct symbol *syma, struct symbol *symb);
344
345
346struct sdt_note {
347 char *name;
348 char *provider;
349 bool bit32;
350 union {
351 Elf64_Addr a64[3];
352 Elf32_Addr a32[3];
353 } addr;
354 struct list_head note_list;
355};
356
357int get_sdt_note_list(struct list_head *head, const char *target);
358int cleanup_sdt_note_list(struct list_head *sdt_notes);
359int sdt_notes__get_count(struct list_head *start);
360
361#define SDT_BASE_SCN ".stapsdt.base"
362#define SDT_NOTE_SCN ".note.stapsdt"
363#define SDT_NOTE_TYPE 3
364#define SDT_NOTE_NAME "stapsdt"
365#define NR_ADDR 3
366
367#endif
368
