1
2
3
4
5
6
7
8
9
10#include "util.h"
11#include "build-id.h"
12#include "color.h"
13#include "cache.h"
14#include "symbol.h"
15#include "debug.h"
16#include "annotate.h"
17#include <pthread.h>
18#include <linux/bitops.h>
19
20const char *disassembler_style;
21const char *objdump_path;
22
23static struct ins *ins__find(const char *name);
24static int disasm_line__parse(char *line, char **namep, char **rawp);
25
26static void ins__delete(struct ins_operands *ops)
27{
28 free(ops->source.raw);
29 free(ops->source.name);
30 free(ops->target.raw);
31 free(ops->target.name);
32}
33
34static int ins__raw_scnprintf(struct ins *ins, char *bf, size_t size,
35 struct ins_operands *ops)
36{
37 return scnprintf(bf, size, "%-6.6s %s", ins->name, ops->raw);
38}
39
40int ins__scnprintf(struct ins *ins, char *bf, size_t size,
41 struct ins_operands *ops)
42{
43 if (ins->ops->scnprintf)
44 return ins->ops->scnprintf(ins, bf, size, ops);
45
46 return ins__raw_scnprintf(ins, bf, size, ops);
47}
48
49static int call__parse(struct ins_operands *ops)
50{
51 char *endptr, *tok, *name;
52
53 ops->target.addr = strtoull(ops->raw, &endptr, 16);
54
55 name = strchr(endptr, '<');
56 if (name == NULL)
57 goto indirect_call;
58
59 name++;
60
61 tok = strchr(name, '>');
62 if (tok == NULL)
63 return -1;
64
65 *tok = '\0';
66 ops->target.name = strdup(name);
67 *tok = '>';
68
69 return ops->target.name == NULL ? -1 : 0;
70
71indirect_call:
72 tok = strchr(endptr, '(');
73 if (tok != NULL) {
74 ops->target.addr = 0;
75 return 0;
76 }
77
78 tok = strchr(endptr, '*');
79 if (tok == NULL)
80 return -1;
81
82 ops->target.addr = strtoull(tok + 1, NULL, 16);
83 return 0;
84}
85
86static int call__scnprintf(struct ins *ins, char *bf, size_t size,
87 struct ins_operands *ops)
88{
89 if (ops->target.name)
90 return scnprintf(bf, size, "%-6.6s %s", ins->name, ops->target.name);
91
92 if (ops->target.addr == 0)
93 return ins__raw_scnprintf(ins, bf, size, ops);
94
95 return scnprintf(bf, size, "%-6.6s *%" PRIx64, ins->name, ops->target.addr);
96}
97
98static struct ins_ops call_ops = {
99 .parse = call__parse,
100 .scnprintf = call__scnprintf,
101};
102
103bool ins__is_call(const struct ins *ins)
104{
105 return ins->ops == &call_ops;
106}
107
108static int jump__parse(struct ins_operands *ops)
109{
110 const char *s = strchr(ops->raw, '+');
111
112 ops->target.addr = strtoll(ops->raw, NULL, 16);
113
114 if (s++ != NULL)
115 ops->target.offset = strtoll(s, NULL, 16);
116 else
117 ops->target.offset = UINT64_MAX;
118
119 return 0;
120}
121
122static int jump__scnprintf(struct ins *ins, char *bf, size_t size,
123 struct ins_operands *ops)
124{
125 return scnprintf(bf, size, "%-6.6s %" PRIx64, ins->name, ops->target.offset);
126}
127
128static struct ins_ops jump_ops = {
129 .parse = jump__parse,
130 .scnprintf = jump__scnprintf,
131};
132
133bool ins__is_jump(const struct ins *ins)
134{
135 return ins->ops == &jump_ops;
136}
137
138static int comment__symbol(char *raw, char *comment, u64 *addrp, char **namep)
139{
140 char *endptr, *name, *t;
141
142 if (strstr(raw, "(%rip)") == NULL)
143 return 0;
144
145 *addrp = strtoull(comment, &endptr, 16);
146 name = strchr(endptr, '<');
147 if (name == NULL)
148 return -1;
149
150 name++;
151
152 t = strchr(name, '>');
153 if (t == NULL)
154 return 0;
155
156 *t = '\0';
157 *namep = strdup(name);
158 *t = '>';
159
160 return 0;
161}
162
163static int lock__parse(struct ins_operands *ops)
164{
165 char *name;
166
167 ops->locked.ops = zalloc(sizeof(*ops->locked.ops));
168 if (ops->locked.ops == NULL)
169 return 0;
170
171 if (disasm_line__parse(ops->raw, &name, &ops->locked.ops->raw) < 0)
172 goto out_free_ops;
173
174 ops->locked.ins = ins__find(name);
175 if (ops->locked.ins == NULL)
176 goto out_free_ops;
177
178 if (!ops->locked.ins->ops)
179 return 0;
180
181 if (ops->locked.ins->ops->parse)
182 ops->locked.ins->ops->parse(ops->locked.ops);
183
184 return 0;
185
186out_free_ops:
187 free(ops->locked.ops);
188 ops->locked.ops = NULL;
189 return 0;
190}
191
192static int lock__scnprintf(struct ins *ins, char *bf, size_t size,
193 struct ins_operands *ops)
194{
195 int printed;
196
197 if (ops->locked.ins == NULL)
198 return ins__raw_scnprintf(ins, bf, size, ops);
199
200 printed = scnprintf(bf, size, "%-6.6s ", ins->name);
201 return printed + ins__scnprintf(ops->locked.ins, bf + printed,
202 size - printed, ops->locked.ops);
203}
204
205static void lock__delete(struct ins_operands *ops)
206{
207 free(ops->locked.ops);
208 free(ops->target.raw);
209 free(ops->target.name);
210}
211
212static struct ins_ops lock_ops = {
213 .free = lock__delete,
214 .parse = lock__parse,
215 .scnprintf = lock__scnprintf,
216};
217
218static int mov__parse(struct ins_operands *ops)
219{
220 char *s = strchr(ops->raw, ','), *target, *comment, prev;
221
222 if (s == NULL)
223 return -1;
224
225 *s = '\0';
226 ops->source.raw = strdup(ops->raw);
227 *s = ',';
228
229 if (ops->source.raw == NULL)
230 return -1;
231
232 target = ++s;
233
234 while (s[0] != '\0' && !isspace(s[0]))
235 ++s;
236 prev = *s;
237 *s = '\0';
238
239 ops->target.raw = strdup(target);
240 *s = prev;
241
242 if (ops->target.raw == NULL)
243 goto out_free_source;
244
245 comment = strchr(s, '#');
246 if (comment == NULL)
247 return 0;
248
249 while (comment[0] != '\0' && isspace(comment[0]))
250 ++comment;
251
252 comment__symbol(ops->source.raw, comment, &ops->source.addr, &ops->source.name);
253 comment__symbol(ops->target.raw, comment, &ops->target.addr, &ops->target.name);
254
255 return 0;
256
257out_free_source:
258 free(ops->source.raw);
259 ops->source.raw = NULL;
260 return -1;
261}
262
263static int mov__scnprintf(struct ins *ins, char *bf, size_t size,
264 struct ins_operands *ops)
265{
266 return scnprintf(bf, size, "%-6.6s %s,%s", ins->name,
267 ops->source.name ?: ops->source.raw,
268 ops->target.name ?: ops->target.raw);
269}
270
271static struct ins_ops mov_ops = {
272 .parse = mov__parse,
273 .scnprintf = mov__scnprintf,
274};
275
276static int dec__parse(struct ins_operands *ops)
277{
278 char *target, *comment, *s, prev;
279
280 target = s = ops->raw;
281
282 while (s[0] != '\0' && !isspace(s[0]))
283 ++s;
284 prev = *s;
285 *s = '\0';
286
287 ops->target.raw = strdup(target);
288 *s = prev;
289
290 if (ops->target.raw == NULL)
291 return -1;
292
293 comment = strchr(s, '#');
294 if (comment == NULL)
295 return 0;
296
297 while (comment[0] != '\0' && isspace(comment[0]))
298 ++comment;
299
300 comment__symbol(ops->target.raw, comment, &ops->target.addr, &ops->target.name);
301
302 return 0;
303}
304
305static int dec__scnprintf(struct ins *ins, char *bf, size_t size,
306 struct ins_operands *ops)
307{
308 return scnprintf(bf, size, "%-6.6s %s", ins->name,
309 ops->target.name ?: ops->target.raw);
310}
311
312static struct ins_ops dec_ops = {
313 .parse = dec__parse,
314 .scnprintf = dec__scnprintf,
315};
316
317static int nop__scnprintf(struct ins *ins __maybe_unused, char *bf, size_t size,
318 struct ins_operands *ops __maybe_unused)
319{
320 return scnprintf(bf, size, "%-6.6s", "nop");
321}
322
323static struct ins_ops nop_ops = {
324 .scnprintf = nop__scnprintf,
325};
326
327
328
329
330static struct ins instructions[] = {
331 { .name = "add", .ops = &mov_ops, },
332 { .name = "addl", .ops = &mov_ops, },
333 { .name = "addq", .ops = &mov_ops, },
334 { .name = "addw", .ops = &mov_ops, },
335 { .name = "and", .ops = &mov_ops, },
336 { .name = "bts", .ops = &mov_ops, },
337 { .name = "call", .ops = &call_ops, },
338 { .name = "callq", .ops = &call_ops, },
339 { .name = "cmp", .ops = &mov_ops, },
340 { .name = "cmpb", .ops = &mov_ops, },
341 { .name = "cmpl", .ops = &mov_ops, },
342 { .name = "cmpq", .ops = &mov_ops, },
343 { .name = "cmpw", .ops = &mov_ops, },
344 { .name = "cmpxch", .ops = &mov_ops, },
345 { .name = "dec", .ops = &dec_ops, },
346 { .name = "decl", .ops = &dec_ops, },
347 { .name = "imul", .ops = &mov_ops, },
348 { .name = "inc", .ops = &dec_ops, },
349 { .name = "incl", .ops = &dec_ops, },
350 { .name = "ja", .ops = &jump_ops, },
351 { .name = "jae", .ops = &jump_ops, },
352 { .name = "jb", .ops = &jump_ops, },
353 { .name = "jbe", .ops = &jump_ops, },
354 { .name = "jc", .ops = &jump_ops, },
355 { .name = "jcxz", .ops = &jump_ops, },
356 { .name = "je", .ops = &jump_ops, },
357 { .name = "jecxz", .ops = &jump_ops, },
358 { .name = "jg", .ops = &jump_ops, },
359 { .name = "jge", .ops = &jump_ops, },
360 { .name = "jl", .ops = &jump_ops, },
361 { .name = "jle", .ops = &jump_ops, },
362 { .name = "jmp", .ops = &jump_ops, },
363 { .name = "jmpq", .ops = &jump_ops, },
364 { .name = "jna", .ops = &jump_ops, },
365 { .name = "jnae", .ops = &jump_ops, },
366 { .name = "jnb", .ops = &jump_ops, },
367 { .name = "jnbe", .ops = &jump_ops, },
368 { .name = "jnc", .ops = &jump_ops, },
369 { .name = "jne", .ops = &jump_ops, },
370 { .name = "jng", .ops = &jump_ops, },
371 { .name = "jnge", .ops = &jump_ops, },
372 { .name = "jnl", .ops = &jump_ops, },
373 { .name = "jnle", .ops = &jump_ops, },
374 { .name = "jno", .ops = &jump_ops, },
375 { .name = "jnp", .ops = &jump_ops, },
376 { .name = "jns", .ops = &jump_ops, },
377 { .name = "jnz", .ops = &jump_ops, },
378 { .name = "jo", .ops = &jump_ops, },
379 { .name = "jp", .ops = &jump_ops, },
380 { .name = "jpe", .ops = &jump_ops, },
381 { .name = "jpo", .ops = &jump_ops, },
382 { .name = "jrcxz", .ops = &jump_ops, },
383 { .name = "js", .ops = &jump_ops, },
384 { .name = "jz", .ops = &jump_ops, },
385 { .name = "lea", .ops = &mov_ops, },
386 { .name = "lock", .ops = &lock_ops, },
387 { .name = "mov", .ops = &mov_ops, },
388 { .name = "movb", .ops = &mov_ops, },
389 { .name = "movdqa",.ops = &mov_ops, },
390 { .name = "movl", .ops = &mov_ops, },
391 { .name = "movq", .ops = &mov_ops, },
392 { .name = "movslq", .ops = &mov_ops, },
393 { .name = "movzbl", .ops = &mov_ops, },
394 { .name = "movzwl", .ops = &mov_ops, },
395 { .name = "nop", .ops = &nop_ops, },
396 { .name = "nopl", .ops = &nop_ops, },
397 { .name = "nopw", .ops = &nop_ops, },
398 { .name = "or", .ops = &mov_ops, },
399 { .name = "orl", .ops = &mov_ops, },
400 { .name = "test", .ops = &mov_ops, },
401 { .name = "testb", .ops = &mov_ops, },
402 { .name = "testl", .ops = &mov_ops, },
403 { .name = "xadd", .ops = &mov_ops, },
404 { .name = "xbeginl", .ops = &jump_ops, },
405 { .name = "xbeginq", .ops = &jump_ops, },
406};
407
408static int ins__cmp(const void *name, const void *insp)
409{
410 const struct ins *ins = insp;
411
412 return strcmp(name, ins->name);
413}
414
415static struct ins *ins__find(const char *name)
416{
417 const int nmemb = ARRAY_SIZE(instructions);
418
419 return bsearch(name, instructions, nmemb, sizeof(struct ins), ins__cmp);
420}
421
422int symbol__annotate_init(struct map *map __maybe_unused, struct symbol *sym)
423{
424 struct annotation *notes = symbol__annotation(sym);
425 pthread_mutex_init(¬es->lock, NULL);
426 return 0;
427}
428
429int symbol__alloc_hist(struct symbol *sym)
430{
431 struct annotation *notes = symbol__annotation(sym);
432 const size_t size = symbol__size(sym);
433 size_t sizeof_sym_hist;
434
435
436 if (size > (SIZE_MAX - sizeof(struct sym_hist)) / sizeof(u64))
437 return -1;
438
439 sizeof_sym_hist = (sizeof(struct sym_hist) + size * sizeof(u64));
440
441
442 if (sizeof_sym_hist > (SIZE_MAX - sizeof(*notes->src))
443 / symbol_conf.nr_events)
444 return -1;
445
446 notes->src = zalloc(sizeof(*notes->src) + symbol_conf.nr_events * sizeof_sym_hist);
447 if (notes->src == NULL)
448 return -1;
449 notes->src->sizeof_sym_hist = sizeof_sym_hist;
450 notes->src->nr_histograms = symbol_conf.nr_events;
451 INIT_LIST_HEAD(¬es->src->source);
452 return 0;
453}
454
455void symbol__annotate_zero_histograms(struct symbol *sym)
456{
457 struct annotation *notes = symbol__annotation(sym);
458
459 pthread_mutex_lock(¬es->lock);
460 if (notes->src != NULL)
461 memset(notes->src->histograms, 0,
462 notes->src->nr_histograms * notes->src->sizeof_sym_hist);
463 pthread_mutex_unlock(¬es->lock);
464}
465
466int symbol__inc_addr_samples(struct symbol *sym, struct map *map,
467 int evidx, u64 addr)
468{
469 unsigned offset;
470 struct annotation *notes;
471 struct sym_hist *h;
472
473 notes = symbol__annotation(sym);
474 if (notes->src == NULL)
475 return -ENOMEM;
476
477 pr_debug3("%s: addr=%#" PRIx64 "\n", __func__, map->unmap_ip(map, addr));
478
479 if (addr < sym->start || addr > sym->end)
480 return -ERANGE;
481
482 offset = addr - sym->start;
483 h = annotation__histogram(notes, evidx);
484 h->sum++;
485 h->addr[offset]++;
486
487 pr_debug3("%#" PRIx64 " %s: period++ [addr: %#" PRIx64 ", %#" PRIx64
488 ", evidx=%d] => %" PRIu64 "\n", sym->start, sym->name,
489 addr, addr - sym->start, evidx, h->addr[offset]);
490 return 0;
491}
492
493static void disasm_line__init_ins(struct disasm_line *dl)
494{
495 dl->ins = ins__find(dl->name);
496
497 if (dl->ins == NULL)
498 return;
499
500 if (!dl->ins->ops)
501 return;
502
503 if (dl->ins->ops->parse)
504 dl->ins->ops->parse(&dl->ops);
505}
506
507static int disasm_line__parse(char *line, char **namep, char **rawp)
508{
509 char *name = line, tmp;
510
511 while (isspace(name[0]))
512 ++name;
513
514 if (name[0] == '\0')
515 return -1;
516
517 *rawp = name + 1;
518
519 while ((*rawp)[0] != '\0' && !isspace((*rawp)[0]))
520 ++*rawp;
521
522 tmp = (*rawp)[0];
523 (*rawp)[0] = '\0';
524 *namep = strdup(name);
525
526 if (*namep == NULL)
527 goto out_free_name;
528
529 (*rawp)[0] = tmp;
530
531 if ((*rawp)[0] != '\0') {
532 (*rawp)++;
533 while (isspace((*rawp)[0]))
534 ++(*rawp);
535 }
536
537 return 0;
538
539out_free_name:
540 free(*namep);
541 *namep = NULL;
542 return -1;
543}
544
545static struct disasm_line *disasm_line__new(s64 offset, char *line, size_t privsize)
546{
547 struct disasm_line *dl = zalloc(sizeof(*dl) + privsize);
548
549 if (dl != NULL) {
550 dl->offset = offset;
551 dl->line = strdup(line);
552 if (dl->line == NULL)
553 goto out_delete;
554
555 if (offset != -1) {
556 if (disasm_line__parse(dl->line, &dl->name, &dl->ops.raw) < 0)
557 goto out_free_line;
558
559 disasm_line__init_ins(dl);
560 }
561 }
562
563 return dl;
564
565out_free_line:
566 free(dl->line);
567out_delete:
568 free(dl);
569 return NULL;
570}
571
572void disasm_line__free(struct disasm_line *dl)
573{
574 free(dl->line);
575 free(dl->name);
576 if (dl->ins && dl->ins->ops->free)
577 dl->ins->ops->free(&dl->ops);
578 else
579 ins__delete(&dl->ops);
580 free(dl);
581}
582
583int disasm_line__scnprintf(struct disasm_line *dl, char *bf, size_t size, bool raw)
584{
585 if (raw || !dl->ins)
586 return scnprintf(bf, size, "%-6.6s %s", dl->name, dl->ops.raw);
587
588 return ins__scnprintf(dl->ins, bf, size, &dl->ops);
589}
590
591static void disasm__add(struct list_head *head, struct disasm_line *line)
592{
593 list_add_tail(&line->node, head);
594}
595
596struct disasm_line *disasm__get_next_ip_line(struct list_head *head, struct disasm_line *pos)
597{
598 list_for_each_entry_continue(pos, head, node)
599 if (pos->offset >= 0)
600 return pos;
601
602 return NULL;
603}
604
605static int disasm_line__print(struct disasm_line *dl, struct symbol *sym, u64 start,
606 int evidx, u64 len, int min_pcnt, int printed,
607 int max_lines, struct disasm_line *queue)
608{
609 static const char *prev_line;
610 static const char *prev_color;
611
612 if (dl->offset != -1) {
613 const char *path = NULL;
614 unsigned int hits = 0;
615 double percent = 0.0;
616 const char *color;
617 struct annotation *notes = symbol__annotation(sym);
618 struct source_line *src_line = notes->src->lines;
619 struct sym_hist *h = annotation__histogram(notes, evidx);
620 s64 offset = dl->offset;
621 const u64 addr = start + offset;
622 struct disasm_line *next;
623
624 next = disasm__get_next_ip_line(¬es->src->source, dl);
625
626 while (offset < (s64)len &&
627 (next == NULL || offset < next->offset)) {
628 if (src_line) {
629 if (path == NULL)
630 path = src_line[offset].path;
631 percent += src_line[offset].percent;
632 } else
633 hits += h->addr[offset];
634
635 ++offset;
636 }
637
638 if (src_line == NULL && h->sum)
639 percent = 100.0 * hits / h->sum;
640
641 if (percent < min_pcnt)
642 return -1;
643
644 if (max_lines && printed >= max_lines)
645 return 1;
646
647 if (queue != NULL) {
648 list_for_each_entry_from(queue, ¬es->src->source, node) {
649 if (queue == dl)
650 break;
651 disasm_line__print(queue, sym, start, evidx, len,
652 0, 0, 1, NULL);
653 }
654 }
655
656 color = get_percent_color(percent);
657
658
659
660
661
662
663 if (path) {
664 if (!prev_line || strcmp(prev_line, path)
665 || color != prev_color) {
666 color_fprintf(stdout, color, " %s", path);
667 prev_line = path;
668 prev_color = color;
669 }
670 }
671
672 color_fprintf(stdout, color, " %7.2f", percent);
673 printf(" : ");
674 color_fprintf(stdout, PERF_COLOR_MAGENTA, " %" PRIx64 ":", addr);
675 color_fprintf(stdout, PERF_COLOR_BLUE, "%s\n", dl->line);
676 } else if (max_lines && printed >= max_lines)
677 return 1;
678 else {
679 if (queue)
680 return -1;
681
682 if (!*dl->line)
683 printf(" :\n");
684 else
685 printf(" : %s\n", dl->line);
686 }
687
688 return 0;
689}
690
691static int symbol__parse_objdump_line(struct symbol *sym, struct map *map,
692 FILE *file, size_t privsize)
693{
694 struct annotation *notes = symbol__annotation(sym);
695 struct disasm_line *dl;
696 char *line = NULL, *parsed_line, *tmp, *tmp2, *c;
697 size_t line_len;
698 s64 line_ip, offset = -1;
699
700 if (getline(&line, &line_len, file) < 0)
701 return -1;
702
703 if (!line)
704 return -1;
705
706 while (line_len != 0 && isspace(line[line_len - 1]))
707 line[--line_len] = '\0';
708
709 c = strchr(line, '\n');
710 if (c)
711 *c = 0;
712
713 line_ip = -1;
714 parsed_line = line;
715
716
717
718
719 tmp = line;
720 while (*tmp) {
721 if (*tmp != ' ')
722 break;
723 tmp++;
724 }
725
726 if (*tmp) {
727
728
729
730 line_ip = strtoull(tmp, &tmp2, 16);
731 if (*tmp2 != ':' || tmp == tmp2 || tmp2[1] == '\0')
732 line_ip = -1;
733 }
734
735 if (line_ip != -1) {
736 u64 start = map__rip_2objdump(map, sym->start),
737 end = map__rip_2objdump(map, sym->end);
738
739 offset = line_ip - start;
740 if (offset < 0 || (u64)line_ip > end)
741 offset = -1;
742 else
743 parsed_line = tmp2 + 1;
744 }
745
746 dl = disasm_line__new(offset, parsed_line, privsize);
747 free(line);
748
749 if (dl == NULL)
750 return -1;
751
752 disasm__add(¬es->src->source, dl);
753
754 return 0;
755}
756
757int symbol__annotate(struct symbol *sym, struct map *map, size_t privsize)
758{
759 struct dso *dso = map->dso;
760 char *filename = dso__build_id_filename(dso, NULL, 0);
761 bool free_filename = true;
762 char command[PATH_MAX * 2];
763 FILE *file;
764 int err = 0;
765 char symfs_filename[PATH_MAX];
766
767 if (filename) {
768 snprintf(symfs_filename, sizeof(symfs_filename), "%s%s",
769 symbol_conf.symfs, filename);
770 }
771
772 if (filename == NULL) {
773 if (dso->has_build_id) {
774 pr_err("Can't annotate %s: not enough memory\n",
775 sym->name);
776 return -ENOMEM;
777 }
778 goto fallback;
779 } else if (readlink(symfs_filename, command, sizeof(command)) < 0 ||
780 strstr(command, "[kernel.kallsyms]") ||
781 access(symfs_filename, R_OK)) {
782 free(filename);
783fallback:
784
785
786
787
788
789 filename = dso->long_name;
790 snprintf(symfs_filename, sizeof(symfs_filename), "%s%s",
791 symbol_conf.symfs, filename);
792 free_filename = false;
793 }
794
795 if (dso->symtab_type == DSO_BINARY_TYPE__KALLSYMS) {
796 char bf[BUILD_ID_SIZE * 2 + 16] = " with build id ";
797 char *build_id_msg = NULL;
798
799 if (dso->annotate_warned)
800 goto out_free_filename;
801
802 if (dso->has_build_id) {
803 build_id__sprintf(dso->build_id,
804 sizeof(dso->build_id), bf + 15);
805 build_id_msg = bf;
806 }
807 err = -ENOENT;
808 dso->annotate_warned = 1;
809 pr_err("Can't annotate %s:\n\n"
810 "No vmlinux file%s\nwas found in the path.\n\n"
811 "Please use:\n\n"
812 " perf buildid-cache -vu vmlinux\n\n"
813 "or:\n\n"
814 " --vmlinux vmlinux\n",
815 sym->name, build_id_msg ?: "");
816 goto out_free_filename;
817 }
818
819 pr_debug("%s: filename=%s, sym=%s, start=%#" PRIx64 ", end=%#" PRIx64 "\n", __func__,
820 filename, sym->name, map->unmap_ip(map, sym->start),
821 map->unmap_ip(map, sym->end));
822
823 pr_debug("annotating [%p] %30s : [%p] %30s\n",
824 dso, dso->long_name, sym, sym->name);
825
826 snprintf(command, sizeof(command),
827 "%s %s%s --start-address=0x%016" PRIx64
828 " --stop-address=0x%016" PRIx64
829 " -d %s %s -C %s|grep -v %s|expand",
830 objdump_path ? objdump_path : "objdump",
831 disassembler_style ? "-M " : "",
832 disassembler_style ? disassembler_style : "",
833 map__rip_2objdump(map, sym->start),
834 map__rip_2objdump(map, sym->end+1),
835 symbol_conf.annotate_asm_raw ? "" : "--no-show-raw",
836 symbol_conf.annotate_src ? "-S" : "",
837 symfs_filename, filename);
838
839 pr_debug("Executing: %s\n", command);
840
841 file = popen(command, "r");
842 if (!file)
843 goto out_free_filename;
844
845 while (!feof(file))
846 if (symbol__parse_objdump_line(sym, map, file, privsize) < 0)
847 break;
848
849 pclose(file);
850out_free_filename:
851 if (free_filename)
852 free(filename);
853 return err;
854}
855
856static void insert_source_line(struct rb_root *root, struct source_line *src_line)
857{
858 struct source_line *iter;
859 struct rb_node **p = &root->rb_node;
860 struct rb_node *parent = NULL;
861 int ret;
862
863 while (*p != NULL) {
864 parent = *p;
865 iter = rb_entry(parent, struct source_line, node);
866
867 ret = strcmp(iter->path, src_line->path);
868 if (ret == 0) {
869 iter->percent_sum += src_line->percent;
870 return;
871 }
872
873 if (ret < 0)
874 p = &(*p)->rb_left;
875 else
876 p = &(*p)->rb_right;
877 }
878
879 src_line->percent_sum = src_line->percent;
880
881 rb_link_node(&src_line->node, parent, p);
882 rb_insert_color(&src_line->node, root);
883}
884
885static void __resort_source_line(struct rb_root *root, struct source_line *src_line)
886{
887 struct source_line *iter;
888 struct rb_node **p = &root->rb_node;
889 struct rb_node *parent = NULL;
890
891 while (*p != NULL) {
892 parent = *p;
893 iter = rb_entry(parent, struct source_line, node);
894
895 if (src_line->percent_sum > iter->percent_sum)
896 p = &(*p)->rb_left;
897 else
898 p = &(*p)->rb_right;
899 }
900
901 rb_link_node(&src_line->node, parent, p);
902 rb_insert_color(&src_line->node, root);
903}
904
905static void resort_source_line(struct rb_root *dest_root, struct rb_root *src_root)
906{
907 struct source_line *src_line;
908 struct rb_node *node;
909
910 node = rb_first(src_root);
911 while (node) {
912 struct rb_node *next;
913
914 src_line = rb_entry(node, struct source_line, node);
915 next = rb_next(node);
916 rb_erase(node, src_root);
917
918 __resort_source_line(dest_root, src_line);
919 node = next;
920 }
921}
922
923static void symbol__free_source_line(struct symbol *sym, int len)
924{
925 struct annotation *notes = symbol__annotation(sym);
926 struct source_line *src_line = notes->src->lines;
927 int i;
928
929 for (i = 0; i < len; i++)
930 free(src_line[i].path);
931
932 free(src_line);
933 notes->src->lines = NULL;
934}
935
936
937static int symbol__get_source_line(struct symbol *sym, struct map *map,
938 int evidx, struct rb_root *root, int len,
939 const char *filename)
940{
941 u64 start;
942 int i;
943 char cmd[PATH_MAX * 2];
944 struct source_line *src_line;
945 struct annotation *notes = symbol__annotation(sym);
946 struct sym_hist *h = annotation__histogram(notes, evidx);
947 struct rb_root tmp_root = RB_ROOT;
948
949 if (!h->sum)
950 return 0;
951
952 src_line = notes->src->lines = calloc(len, sizeof(struct source_line));
953 if (!notes->src->lines)
954 return -1;
955
956 start = map__rip_2objdump(map, sym->start);
957
958 for (i = 0; i < len; i++) {
959 char *path = NULL;
960 size_t line_len;
961 u64 offset;
962 FILE *fp;
963
964 src_line[i].percent = 100.0 * h->addr[i] / h->sum;
965 if (src_line[i].percent <= 0.5)
966 continue;
967
968 offset = start + i;
969 sprintf(cmd, "addr2line -e %s %016" PRIx64, filename, offset);
970 fp = popen(cmd, "r");
971 if (!fp)
972 continue;
973
974 if (getline(&path, &line_len, fp) < 0 || !line_len)
975 goto next;
976
977 src_line[i].path = malloc(sizeof(char) * line_len + 1);
978 if (!src_line[i].path)
979 goto next;
980
981 strcpy(src_line[i].path, path);
982 insert_source_line(&tmp_root, &src_line[i]);
983
984 next:
985 pclose(fp);
986 }
987
988 resort_source_line(root, &tmp_root);
989 return 0;
990}
991
992static void print_summary(struct rb_root *root, const char *filename)
993{
994 struct source_line *src_line;
995 struct rb_node *node;
996
997 printf("\nSorted summary for file %s\n", filename);
998 printf("----------------------------------------------\n\n");
999
1000 if (RB_EMPTY_ROOT(root)) {
1001 printf(" Nothing higher than %1.1f%%\n", MIN_GREEN);
1002 return;
1003 }
1004
1005 node = rb_first(root);
1006 while (node) {
1007 double percent;
1008 const char *color;
1009 char *path;
1010
1011 src_line = rb_entry(node, struct source_line, node);
1012 percent = src_line->percent_sum;
1013 color = get_percent_color(percent);
1014 path = src_line->path;
1015
1016 color_fprintf(stdout, color, " %7.2f %s", percent, path);
1017 node = rb_next(node);
1018 }
1019}
1020
1021static void symbol__annotate_hits(struct symbol *sym, int evidx)
1022{
1023 struct annotation *notes = symbol__annotation(sym);
1024 struct sym_hist *h = annotation__histogram(notes, evidx);
1025 u64 len = symbol__size(sym), offset;
1026
1027 for (offset = 0; offset < len; ++offset)
1028 if (h->addr[offset] != 0)
1029 printf("%*" PRIx64 ": %" PRIu64 "\n", BITS_PER_LONG / 2,
1030 sym->start + offset, h->addr[offset]);
1031 printf("%*s: %" PRIu64 "\n", BITS_PER_LONG / 2, "h->sum", h->sum);
1032}
1033
1034int symbol__annotate_printf(struct symbol *sym, struct map *map, int evidx,
1035 bool full_paths, int min_pcnt, int max_lines,
1036 int context)
1037{
1038 struct dso *dso = map->dso;
1039 char *filename;
1040 const char *d_filename;
1041 struct annotation *notes = symbol__annotation(sym);
1042 struct disasm_line *pos, *queue = NULL;
1043 u64 start = map__rip_2objdump(map, sym->start);
1044 int printed = 2, queue_len = 0;
1045 int more = 0;
1046 u64 len;
1047
1048 filename = strdup(dso->long_name);
1049 if (!filename)
1050 return -ENOMEM;
1051
1052 if (full_paths)
1053 d_filename = filename;
1054 else
1055 d_filename = basename(filename);
1056
1057 len = symbol__size(sym);
1058
1059 printf(" Percent | Source code & Disassembly of %s\n", d_filename);
1060 printf("------------------------------------------------\n");
1061
1062 if (verbose)
1063 symbol__annotate_hits(sym, evidx);
1064
1065 list_for_each_entry(pos, ¬es->src->source, node) {
1066 if (context && queue == NULL) {
1067 queue = pos;
1068 queue_len = 0;
1069 }
1070
1071 switch (disasm_line__print(pos, sym, start, evidx, len,
1072 min_pcnt, printed, max_lines,
1073 queue)) {
1074 case 0:
1075 ++printed;
1076 if (context) {
1077 printed += queue_len;
1078 queue = NULL;
1079 queue_len = 0;
1080 }
1081 break;
1082 case 1:
1083
1084 ++more;
1085 break;
1086 case -1:
1087 default:
1088
1089
1090
1091
1092 if (!context)
1093 break;
1094 if (queue_len == context)
1095 queue = list_entry(queue->node.next, typeof(*queue), node);
1096 else
1097 ++queue_len;
1098 break;
1099 }
1100 }
1101
1102 free(filename);
1103
1104 return more;
1105}
1106
1107void symbol__annotate_zero_histogram(struct symbol *sym, int evidx)
1108{
1109 struct annotation *notes = symbol__annotation(sym);
1110 struct sym_hist *h = annotation__histogram(notes, evidx);
1111
1112 memset(h, 0, notes->src->sizeof_sym_hist);
1113}
1114
1115void symbol__annotate_decay_histogram(struct symbol *sym, int evidx)
1116{
1117 struct annotation *notes = symbol__annotation(sym);
1118 struct sym_hist *h = annotation__histogram(notes, evidx);
1119 int len = symbol__size(sym), offset;
1120
1121 h->sum = 0;
1122 for (offset = 0; offset < len; ++offset) {
1123 h->addr[offset] = h->addr[offset] * 7 / 8;
1124 h->sum += h->addr[offset];
1125 }
1126}
1127
1128void disasm__purge(struct list_head *head)
1129{
1130 struct disasm_line *pos, *n;
1131
1132 list_for_each_entry_safe(pos, n, head, node) {
1133 list_del(&pos->node);
1134 disasm_line__free(pos);
1135 }
1136}
1137
1138static size_t disasm_line__fprintf(struct disasm_line *dl, FILE *fp)
1139{
1140 size_t printed;
1141
1142 if (dl->offset == -1)
1143 return fprintf(fp, "%s\n", dl->line);
1144
1145 printed = fprintf(fp, "%#" PRIx64 " %s", dl->offset, dl->name);
1146
1147 if (dl->ops.raw[0] != '\0') {
1148 printed += fprintf(fp, "%.*s %s\n", 6 - (int)printed, " ",
1149 dl->ops.raw);
1150 }
1151
1152 return printed + fprintf(fp, "\n");
1153}
1154
1155size_t disasm__fprintf(struct list_head *head, FILE *fp)
1156{
1157 struct disasm_line *pos;
1158 size_t printed = 0;
1159
1160 list_for_each_entry(pos, head, node)
1161 printed += disasm_line__fprintf(pos, fp);
1162
1163 return printed;
1164}
1165
1166int symbol__tty_annotate(struct symbol *sym, struct map *map, int evidx,
1167 bool print_lines, bool full_paths, int min_pcnt,
1168 int max_lines)
1169{
1170 struct dso *dso = map->dso;
1171 const char *filename = dso->long_name;
1172 struct rb_root source_line = RB_ROOT;
1173 u64 len;
1174
1175 if (symbol__annotate(sym, map, 0) < 0)
1176 return -1;
1177
1178 len = symbol__size(sym);
1179
1180 if (print_lines) {
1181 symbol__get_source_line(sym, map, evidx, &source_line,
1182 len, filename);
1183 print_summary(&source_line, filename);
1184 }
1185
1186 symbol__annotate_printf(sym, map, evidx, full_paths,
1187 min_pcnt, max_lines, 0);
1188 if (print_lines)
1189 symbol__free_source_line(sym, len);
1190
1191 disasm__purge(&symbol__annotation(sym)->src->source);
1192
1193 return 0;
1194}
1195
