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perf symbols: Set symtab_type in dso__load_sym
[mirror_ubuntu-artful-kernel.git] / tools / perf / util / annotate.c
1 /*
2 * Copyright (C) 2011, Red Hat Inc, Arnaldo Carvalho de Melo <acme@redhat.com>
3 *
4 * Parts came from builtin-annotate.c, see those files for further
5 * copyright notes.
6 *
7 * Released under the GPL v2. (and only v2, not any later version)
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
19 const char *disassembler_style;
20
21 static struct ins *ins__find(const char *name);
22 static int disasm_line__parse(char *line, char **namep, char **rawp);
23
24 static void ins__delete(struct ins_operands *ops)
25 {
26 free(ops->source.raw);
27 free(ops->source.name);
28 free(ops->target.raw);
29 free(ops->target.name);
30 }
31
32 static int ins__raw_scnprintf(struct ins *ins, char *bf, size_t size,
33 struct ins_operands *ops)
34 {
35 return scnprintf(bf, size, "%-6.6s %s", ins->name, ops->raw);
36 }
37
38 int ins__scnprintf(struct ins *ins, char *bf, size_t size,
39 struct ins_operands *ops)
40 {
41 if (ins->ops->scnprintf)
42 return ins->ops->scnprintf(ins, bf, size, ops);
43
44 return ins__raw_scnprintf(ins, bf, size, ops);
45 }
46
47 static int call__parse(struct ins_operands *ops)
48 {
49 char *endptr, *tok, *name;
50
51 ops->target.addr = strtoull(ops->raw, &endptr, 16);
52
53 name = strchr(endptr, '<');
54 if (name == NULL)
55 goto indirect_call;
56
57 name++;
58
59 tok = strchr(name, '>');
60 if (tok == NULL)
61 return -1;
62
63 *tok = '\0';
64 ops->target.name = strdup(name);
65 *tok = '>';
66
67 return ops->target.name == NULL ? -1 : 0;
68
69 indirect_call:
70 tok = strchr(endptr, '(');
71 if (tok != NULL) {
72 ops->target.addr = 0;
73 return 0;
74 }
75
76 tok = strchr(endptr, '*');
77 if (tok == NULL)
78 return -1;
79
80 ops->target.addr = strtoull(tok + 1, NULL, 16);
81 return 0;
82 }
83
84 static int call__scnprintf(struct ins *ins, char *bf, size_t size,
85 struct ins_operands *ops)
86 {
87 if (ops->target.name)
88 return scnprintf(bf, size, "%-6.6s %s", ins->name, ops->target.name);
89
90 if (ops->target.addr == 0)
91 return ins__raw_scnprintf(ins, bf, size, ops);
92
93 return scnprintf(bf, size, "%-6.6s *%" PRIx64, ins->name, ops->target.addr);
94 }
95
96 static struct ins_ops call_ops = {
97 .parse = call__parse,
98 .scnprintf = call__scnprintf,
99 };
100
101 bool ins__is_call(const struct ins *ins)
102 {
103 return ins->ops == &call_ops;
104 }
105
106 static int jump__parse(struct ins_operands *ops)
107 {
108 const char *s = strchr(ops->raw, '+');
109
110 ops->target.addr = strtoll(ops->raw, NULL, 16);
111
112 if (s++ != NULL)
113 ops->target.offset = strtoll(s, NULL, 16);
114 else
115 ops->target.offset = UINT64_MAX;
116
117 return 0;
118 }
119
120 static int jump__scnprintf(struct ins *ins, char *bf, size_t size,
121 struct ins_operands *ops)
122 {
123 return scnprintf(bf, size, "%-6.6s %" PRIx64, ins->name, ops->target.offset);
124 }
125
126 static struct ins_ops jump_ops = {
127 .parse = jump__parse,
128 .scnprintf = jump__scnprintf,
129 };
130
131 bool ins__is_jump(const struct ins *ins)
132 {
133 return ins->ops == &jump_ops;
134 }
135
136 static int comment__symbol(char *raw, char *comment, u64 *addrp, char **namep)
137 {
138 char *endptr, *name, *t;
139
140 if (strstr(raw, "(%rip)") == NULL)
141 return 0;
142
143 *addrp = strtoull(comment, &endptr, 16);
144 name = strchr(endptr, '<');
145 if (name == NULL)
146 return -1;
147
148 name++;
149
150 t = strchr(name, '>');
151 if (t == NULL)
152 return 0;
153
154 *t = '\0';
155 *namep = strdup(name);
156 *t = '>';
157
158 return 0;
159 }
160
161 static int lock__parse(struct ins_operands *ops)
162 {
163 char *name;
164
165 ops->locked.ops = zalloc(sizeof(*ops->locked.ops));
166 if (ops->locked.ops == NULL)
167 return 0;
168
169 if (disasm_line__parse(ops->raw, &name, &ops->locked.ops->raw) < 0)
170 goto out_free_ops;
171
172 ops->locked.ins = ins__find(name);
173 if (ops->locked.ins == NULL)
174 goto out_free_ops;
175
176 if (!ops->locked.ins->ops)
177 return 0;
178
179 if (ops->locked.ins->ops->parse)
180 ops->locked.ins->ops->parse(ops->locked.ops);
181
182 return 0;
183
184 out_free_ops:
185 free(ops->locked.ops);
186 ops->locked.ops = NULL;
187 return 0;
188 }
189
190 static int lock__scnprintf(struct ins *ins, char *bf, size_t size,
191 struct ins_operands *ops)
192 {
193 int printed;
194
195 if (ops->locked.ins == NULL)
196 return ins__raw_scnprintf(ins, bf, size, ops);
197
198 printed = scnprintf(bf, size, "%-6.6s ", ins->name);
199 return printed + ins__scnprintf(ops->locked.ins, bf + printed,
200 size - printed, ops->locked.ops);
201 }
202
203 static void lock__delete(struct ins_operands *ops)
204 {
205 free(ops->locked.ops);
206 free(ops->target.raw);
207 free(ops->target.name);
208 }
209
210 static struct ins_ops lock_ops = {
211 .free = lock__delete,
212 .parse = lock__parse,
213 .scnprintf = lock__scnprintf,
214 };
215
216 static int mov__parse(struct ins_operands *ops)
217 {
218 char *s = strchr(ops->raw, ','), *target, *comment, prev;
219
220 if (s == NULL)
221 return -1;
222
223 *s = '\0';
224 ops->source.raw = strdup(ops->raw);
225 *s = ',';
226
227 if (ops->source.raw == NULL)
228 return -1;
229
230 target = ++s;
231
232 while (s[0] != '\0' && !isspace(s[0]))
233 ++s;
234 prev = *s;
235 *s = '\0';
236
237 ops->target.raw = strdup(target);
238 *s = prev;
239
240 if (ops->target.raw == NULL)
241 goto out_free_source;
242
243 comment = strchr(s, '#');
244 if (comment == NULL)
245 return 0;
246
247 while (comment[0] != '\0' && isspace(comment[0]))
248 ++comment;
249
250 comment__symbol(ops->source.raw, comment, &ops->source.addr, &ops->source.name);
251 comment__symbol(ops->target.raw, comment, &ops->target.addr, &ops->target.name);
252
253 return 0;
254
255 out_free_source:
256 free(ops->source.raw);
257 ops->source.raw = NULL;
258 return -1;
259 }
260
261 static int mov__scnprintf(struct ins *ins, char *bf, size_t size,
262 struct ins_operands *ops)
263 {
264 return scnprintf(bf, size, "%-6.6s %s,%s", ins->name,
265 ops->source.name ?: ops->source.raw,
266 ops->target.name ?: ops->target.raw);
267 }
268
269 static struct ins_ops mov_ops = {
270 .parse = mov__parse,
271 .scnprintf = mov__scnprintf,
272 };
273
274 static int dec__parse(struct ins_operands *ops)
275 {
276 char *target, *comment, *s, prev;
277
278 target = s = ops->raw;
279
280 while (s[0] != '\0' && !isspace(s[0]))
281 ++s;
282 prev = *s;
283 *s = '\0';
284
285 ops->target.raw = strdup(target);
286 *s = prev;
287
288 if (ops->target.raw == NULL)
289 return -1;
290
291 comment = strchr(s, '#');
292 if (comment == NULL)
293 return 0;
294
295 while (comment[0] != '\0' && isspace(comment[0]))
296 ++comment;
297
298 comment__symbol(ops->target.raw, comment, &ops->target.addr, &ops->target.name);
299
300 return 0;
301 }
302
303 static int dec__scnprintf(struct ins *ins, char *bf, size_t size,
304 struct ins_operands *ops)
305 {
306 return scnprintf(bf, size, "%-6.6s %s", ins->name,
307 ops->target.name ?: ops->target.raw);
308 }
309
310 static struct ins_ops dec_ops = {
311 .parse = dec__parse,
312 .scnprintf = dec__scnprintf,
313 };
314
315 static int nop__scnprintf(struct ins *ins __used, char *bf, size_t size,
316 struct ins_operands *ops __used)
317 {
318 return scnprintf(bf, size, "%-6.6s", "nop");
319 }
320
321 static struct ins_ops nop_ops = {
322 .scnprintf = nop__scnprintf,
323 };
324
325 /*
326 * Must be sorted by name!
327 */
328 static struct ins instructions[] = {
329 { .name = "add", .ops = &mov_ops, },
330 { .name = "addl", .ops = &mov_ops, },
331 { .name = "addq", .ops = &mov_ops, },
332 { .name = "addw", .ops = &mov_ops, },
333 { .name = "and", .ops = &mov_ops, },
334 { .name = "bts", .ops = &mov_ops, },
335 { .name = "call", .ops = &call_ops, },
336 { .name = "callq", .ops = &call_ops, },
337 { .name = "cmp", .ops = &mov_ops, },
338 { .name = "cmpb", .ops = &mov_ops, },
339 { .name = "cmpl", .ops = &mov_ops, },
340 { .name = "cmpq", .ops = &mov_ops, },
341 { .name = "cmpw", .ops = &mov_ops, },
342 { .name = "cmpxch", .ops = &mov_ops, },
343 { .name = "dec", .ops = &dec_ops, },
344 { .name = "decl", .ops = &dec_ops, },
345 { .name = "imul", .ops = &mov_ops, },
346 { .name = "inc", .ops = &dec_ops, },
347 { .name = "incl", .ops = &dec_ops, },
348 { .name = "ja", .ops = &jump_ops, },
349 { .name = "jae", .ops = &jump_ops, },
350 { .name = "jb", .ops = &jump_ops, },
351 { .name = "jbe", .ops = &jump_ops, },
352 { .name = "jc", .ops = &jump_ops, },
353 { .name = "jcxz", .ops = &jump_ops, },
354 { .name = "je", .ops = &jump_ops, },
355 { .name = "jecxz", .ops = &jump_ops, },
356 { .name = "jg", .ops = &jump_ops, },
357 { .name = "jge", .ops = &jump_ops, },
358 { .name = "jl", .ops = &jump_ops, },
359 { .name = "jle", .ops = &jump_ops, },
360 { .name = "jmp", .ops = &jump_ops, },
361 { .name = "jmpq", .ops = &jump_ops, },
362 { .name = "jna", .ops = &jump_ops, },
363 { .name = "jnae", .ops = &jump_ops, },
364 { .name = "jnb", .ops = &jump_ops, },
365 { .name = "jnbe", .ops = &jump_ops, },
366 { .name = "jnc", .ops = &jump_ops, },
367 { .name = "jne", .ops = &jump_ops, },
368 { .name = "jng", .ops = &jump_ops, },
369 { .name = "jnge", .ops = &jump_ops, },
370 { .name = "jnl", .ops = &jump_ops, },
371 { .name = "jnle", .ops = &jump_ops, },
372 { .name = "jno", .ops = &jump_ops, },
373 { .name = "jnp", .ops = &jump_ops, },
374 { .name = "jns", .ops = &jump_ops, },
375 { .name = "jnz", .ops = &jump_ops, },
376 { .name = "jo", .ops = &jump_ops, },
377 { .name = "jp", .ops = &jump_ops, },
378 { .name = "jpe", .ops = &jump_ops, },
379 { .name = "jpo", .ops = &jump_ops, },
380 { .name = "jrcxz", .ops = &jump_ops, },
381 { .name = "js", .ops = &jump_ops, },
382 { .name = "jz", .ops = &jump_ops, },
383 { .name = "lea", .ops = &mov_ops, },
384 { .name = "lock", .ops = &lock_ops, },
385 { .name = "mov", .ops = &mov_ops, },
386 { .name = "movb", .ops = &mov_ops, },
387 { .name = "movdqa",.ops = &mov_ops, },
388 { .name = "movl", .ops = &mov_ops, },
389 { .name = "movq", .ops = &mov_ops, },
390 { .name = "movslq", .ops = &mov_ops, },
391 { .name = "movzbl", .ops = &mov_ops, },
392 { .name = "movzwl", .ops = &mov_ops, },
393 { .name = "nop", .ops = &nop_ops, },
394 { .name = "nopl", .ops = &nop_ops, },
395 { .name = "nopw", .ops = &nop_ops, },
396 { .name = "or", .ops = &mov_ops, },
397 { .name = "orl", .ops = &mov_ops, },
398 { .name = "test", .ops = &mov_ops, },
399 { .name = "testb", .ops = &mov_ops, },
400 { .name = "testl", .ops = &mov_ops, },
401 { .name = "xadd", .ops = &mov_ops, },
402 };
403
404 static int ins__cmp(const void *name, const void *insp)
405 {
406 const struct ins *ins = insp;
407
408 return strcmp(name, ins->name);
409 }
410
411 static struct ins *ins__find(const char *name)
412 {
413 const int nmemb = ARRAY_SIZE(instructions);
414
415 return bsearch(name, instructions, nmemb, sizeof(struct ins), ins__cmp);
416 }
417
418 int symbol__annotate_init(struct map *map __used, struct symbol *sym)
419 {
420 struct annotation *notes = symbol__annotation(sym);
421 pthread_mutex_init(&notes->lock, NULL);
422 return 0;
423 }
424
425 int symbol__alloc_hist(struct symbol *sym)
426 {
427 struct annotation *notes = symbol__annotation(sym);
428 const size_t size = symbol__size(sym);
429 size_t sizeof_sym_hist;
430
431 /* Check for overflow when calculating sizeof_sym_hist */
432 if (size > (SIZE_MAX - sizeof(struct sym_hist)) / sizeof(u64))
433 return -1;
434
435 sizeof_sym_hist = (sizeof(struct sym_hist) + size * sizeof(u64));
436
437 /* Check for overflow in zalloc argument */
438 if (sizeof_sym_hist > (SIZE_MAX - sizeof(*notes->src))
439 / symbol_conf.nr_events)
440 return -1;
441
442 notes->src = zalloc(sizeof(*notes->src) + symbol_conf.nr_events * sizeof_sym_hist);
443 if (notes->src == NULL)
444 return -1;
445 notes->src->sizeof_sym_hist = sizeof_sym_hist;
446 notes->src->nr_histograms = symbol_conf.nr_events;
447 INIT_LIST_HEAD(&notes->src->source);
448 return 0;
449 }
450
451 void symbol__annotate_zero_histograms(struct symbol *sym)
452 {
453 struct annotation *notes = symbol__annotation(sym);
454
455 pthread_mutex_lock(&notes->lock);
456 if (notes->src != NULL)
457 memset(notes->src->histograms, 0,
458 notes->src->nr_histograms * notes->src->sizeof_sym_hist);
459 pthread_mutex_unlock(&notes->lock);
460 }
461
462 int symbol__inc_addr_samples(struct symbol *sym, struct map *map,
463 int evidx, u64 addr)
464 {
465 unsigned offset;
466 struct annotation *notes;
467 struct sym_hist *h;
468
469 notes = symbol__annotation(sym);
470 if (notes->src == NULL)
471 return -ENOMEM;
472
473 pr_debug3("%s: addr=%#" PRIx64 "\n", __func__, map->unmap_ip(map, addr));
474
475 if (addr < sym->start || addr > sym->end)
476 return -ERANGE;
477
478 offset = addr - sym->start;
479 h = annotation__histogram(notes, evidx);
480 h->sum++;
481 h->addr[offset]++;
482
483 pr_debug3("%#" PRIx64 " %s: period++ [addr: %#" PRIx64 ", %#" PRIx64
484 ", evidx=%d] => %" PRIu64 "\n", sym->start, sym->name,
485 addr, addr - sym->start, evidx, h->addr[offset]);
486 return 0;
487 }
488
489 static void disasm_line__init_ins(struct disasm_line *dl)
490 {
491 dl->ins = ins__find(dl->name);
492
493 if (dl->ins == NULL)
494 return;
495
496 if (!dl->ins->ops)
497 return;
498
499 if (dl->ins->ops->parse)
500 dl->ins->ops->parse(&dl->ops);
501 }
502
503 static int disasm_line__parse(char *line, char **namep, char **rawp)
504 {
505 char *name = line, tmp;
506
507 while (isspace(name[0]))
508 ++name;
509
510 if (name[0] == '\0')
511 return -1;
512
513 *rawp = name + 1;
514
515 while ((*rawp)[0] != '\0' && !isspace((*rawp)[0]))
516 ++*rawp;
517
518 tmp = (*rawp)[0];
519 (*rawp)[0] = '\0';
520 *namep = strdup(name);
521
522 if (*namep == NULL)
523 goto out_free_name;
524
525 (*rawp)[0] = tmp;
526
527 if ((*rawp)[0] != '\0') {
528 (*rawp)++;
529 while (isspace((*rawp)[0]))
530 ++(*rawp);
531 }
532
533 return 0;
534
535 out_free_name:
536 free(*namep);
537 *namep = NULL;
538 return -1;
539 }
540
541 static struct disasm_line *disasm_line__new(s64 offset, char *line, size_t privsize)
542 {
543 struct disasm_line *dl = zalloc(sizeof(*dl) + privsize);
544
545 if (dl != NULL) {
546 dl->offset = offset;
547 dl->line = strdup(line);
548 if (dl->line == NULL)
549 goto out_delete;
550
551 if (offset != -1) {
552 if (disasm_line__parse(dl->line, &dl->name, &dl->ops.raw) < 0)
553 goto out_free_line;
554
555 disasm_line__init_ins(dl);
556 }
557 }
558
559 return dl;
560
561 out_free_line:
562 free(dl->line);
563 out_delete:
564 free(dl);
565 return NULL;
566 }
567
568 void disasm_line__free(struct disasm_line *dl)
569 {
570 free(dl->line);
571 free(dl->name);
572 if (dl->ins && dl->ins->ops->free)
573 dl->ins->ops->free(&dl->ops);
574 else
575 ins__delete(&dl->ops);
576 free(dl);
577 }
578
579 int disasm_line__scnprintf(struct disasm_line *dl, char *bf, size_t size, bool raw)
580 {
581 if (raw || !dl->ins)
582 return scnprintf(bf, size, "%-6.6s %s", dl->name, dl->ops.raw);
583
584 return ins__scnprintf(dl->ins, bf, size, &dl->ops);
585 }
586
587 static void disasm__add(struct list_head *head, struct disasm_line *line)
588 {
589 list_add_tail(&line->node, head);
590 }
591
592 struct disasm_line *disasm__get_next_ip_line(struct list_head *head, struct disasm_line *pos)
593 {
594 list_for_each_entry_continue(pos, head, node)
595 if (pos->offset >= 0)
596 return pos;
597
598 return NULL;
599 }
600
601 static int disasm_line__print(struct disasm_line *dl, struct symbol *sym, u64 start,
602 int evidx, u64 len, int min_pcnt, int printed,
603 int max_lines, struct disasm_line *queue)
604 {
605 static const char *prev_line;
606 static const char *prev_color;
607
608 if (dl->offset != -1) {
609 const char *path = NULL;
610 unsigned int hits = 0;
611 double percent = 0.0;
612 const char *color;
613 struct annotation *notes = symbol__annotation(sym);
614 struct source_line *src_line = notes->src->lines;
615 struct sym_hist *h = annotation__histogram(notes, evidx);
616 s64 offset = dl->offset;
617 const u64 addr = start + offset;
618 struct disasm_line *next;
619
620 next = disasm__get_next_ip_line(&notes->src->source, dl);
621
622 while (offset < (s64)len &&
623 (next == NULL || offset < next->offset)) {
624 if (src_line) {
625 if (path == NULL)
626 path = src_line[offset].path;
627 percent += src_line[offset].percent;
628 } else
629 hits += h->addr[offset];
630
631 ++offset;
632 }
633
634 if (src_line == NULL && h->sum)
635 percent = 100.0 * hits / h->sum;
636
637 if (percent < min_pcnt)
638 return -1;
639
640 if (max_lines && printed >= max_lines)
641 return 1;
642
643 if (queue != NULL) {
644 list_for_each_entry_from(queue, &notes->src->source, node) {
645 if (queue == dl)
646 break;
647 disasm_line__print(queue, sym, start, evidx, len,
648 0, 0, 1, NULL);
649 }
650 }
651
652 color = get_percent_color(percent);
653
654 /*
655 * Also color the filename and line if needed, with
656 * the same color than the percentage. Don't print it
657 * twice for close colored addr with the same filename:line
658 */
659 if (path) {
660 if (!prev_line || strcmp(prev_line, path)
661 || color != prev_color) {
662 color_fprintf(stdout, color, " %s", path);
663 prev_line = path;
664 prev_color = color;
665 }
666 }
667
668 color_fprintf(stdout, color, " %7.2f", percent);
669 printf(" : ");
670 color_fprintf(stdout, PERF_COLOR_MAGENTA, " %" PRIx64 ":", addr);
671 color_fprintf(stdout, PERF_COLOR_BLUE, "%s\n", dl->line);
672 } else if (max_lines && printed >= max_lines)
673 return 1;
674 else {
675 if (queue)
676 return -1;
677
678 if (!*dl->line)
679 printf(" :\n");
680 else
681 printf(" : %s\n", dl->line);
682 }
683
684 return 0;
685 }
686
687 static int symbol__parse_objdump_line(struct symbol *sym, struct map *map,
688 FILE *file, size_t privsize)
689 {
690 struct annotation *notes = symbol__annotation(sym);
691 struct disasm_line *dl;
692 char *line = NULL, *parsed_line, *tmp, *tmp2, *c;
693 size_t line_len;
694 s64 line_ip, offset = -1;
695
696 if (getline(&line, &line_len, file) < 0)
697 return -1;
698
699 if (!line)
700 return -1;
701
702 while (line_len != 0 && isspace(line[line_len - 1]))
703 line[--line_len] = '\0';
704
705 c = strchr(line, '\n');
706 if (c)
707 *c = 0;
708
709 line_ip = -1;
710 parsed_line = line;
711
712 /*
713 * Strip leading spaces:
714 */
715 tmp = line;
716 while (*tmp) {
717 if (*tmp != ' ')
718 break;
719 tmp++;
720 }
721
722 if (*tmp) {
723 /*
724 * Parse hexa addresses followed by ':'
725 */
726 line_ip = strtoull(tmp, &tmp2, 16);
727 if (*tmp2 != ':' || tmp == tmp2 || tmp2[1] == '\0')
728 line_ip = -1;
729 }
730
731 if (line_ip != -1) {
732 u64 start = map__rip_2objdump(map, sym->start),
733 end = map__rip_2objdump(map, sym->end);
734
735 offset = line_ip - start;
736 if (offset < 0 || (u64)line_ip > end)
737 offset = -1;
738 else
739 parsed_line = tmp2 + 1;
740 }
741
742 dl = disasm_line__new(offset, parsed_line, privsize);
743 free(line);
744
745 if (dl == NULL)
746 return -1;
747
748 disasm__add(&notes->src->source, dl);
749
750 return 0;
751 }
752
753 int symbol__annotate(struct symbol *sym, struct map *map, size_t privsize)
754 {
755 struct dso *dso = map->dso;
756 char *filename = dso__build_id_filename(dso, NULL, 0);
757 bool free_filename = true;
758 char command[PATH_MAX * 2];
759 FILE *file;
760 int err = 0;
761 char symfs_filename[PATH_MAX];
762
763 if (filename) {
764 snprintf(symfs_filename, sizeof(symfs_filename), "%s%s",
765 symbol_conf.symfs, filename);
766 }
767
768 if (filename == NULL) {
769 if (dso->has_build_id) {
770 pr_err("Can't annotate %s: not enough memory\n",
771 sym->name);
772 return -ENOMEM;
773 }
774 goto fallback;
775 } else if (readlink(symfs_filename, command, sizeof(command)) < 0 ||
776 strstr(command, "[kernel.kallsyms]") ||
777 access(symfs_filename, R_OK)) {
778 free(filename);
779 fallback:
780 /*
781 * If we don't have build-ids or the build-id file isn't in the
782 * cache, or is just a kallsyms file, well, lets hope that this
783 * DSO is the same as when 'perf record' ran.
784 */
785 filename = dso->long_name;
786 snprintf(symfs_filename, sizeof(symfs_filename), "%s%s",
787 symbol_conf.symfs, filename);
788 free_filename = false;
789 }
790
791 if (dso->symtab_type == DSO_BINARY_TYPE__KALLSYMS) {
792 char bf[BUILD_ID_SIZE * 2 + 16] = " with build id ";
793 char *build_id_msg = NULL;
794
795 if (dso->annotate_warned)
796 goto out_free_filename;
797
798 if (dso->has_build_id) {
799 build_id__sprintf(dso->build_id,
800 sizeof(dso->build_id), bf + 15);
801 build_id_msg = bf;
802 }
803 err = -ENOENT;
804 dso->annotate_warned = 1;
805 pr_err("Can't annotate %s:\n\n"
806 "No vmlinux file%s\nwas found in the path.\n\n"
807 "Please use:\n\n"
808 " perf buildid-cache -av vmlinux\n\n"
809 "or:\n\n"
810 " --vmlinux vmlinux\n",
811 sym->name, build_id_msg ?: "");
812 goto out_free_filename;
813 }
814
815 pr_debug("%s: filename=%s, sym=%s, start=%#" PRIx64 ", end=%#" PRIx64 "\n", __func__,
816 filename, sym->name, map->unmap_ip(map, sym->start),
817 map->unmap_ip(map, sym->end));
818
819 pr_debug("annotating [%p] %30s : [%p] %30s\n",
820 dso, dso->long_name, sym, sym->name);
821
822 snprintf(command, sizeof(command),
823 "objdump %s%s --start-address=0x%016" PRIx64
824 " --stop-address=0x%016" PRIx64
825 " -d %s %s -C %s|grep -v %s|expand",
826 disassembler_style ? "-M " : "",
827 disassembler_style ? disassembler_style : "",
828 map__rip_2objdump(map, sym->start),
829 map__rip_2objdump(map, sym->end+1),
830 symbol_conf.annotate_asm_raw ? "" : "--no-show-raw",
831 symbol_conf.annotate_src ? "-S" : "",
832 symfs_filename, filename);
833
834 pr_debug("Executing: %s\n", command);
835
836 file = popen(command, "r");
837 if (!file)
838 goto out_free_filename;
839
840 while (!feof(file))
841 if (symbol__parse_objdump_line(sym, map, file, privsize) < 0)
842 break;
843
844 pclose(file);
845 out_free_filename:
846 if (free_filename)
847 free(filename);
848 return err;
849 }
850
851 static void insert_source_line(struct rb_root *root, struct source_line *src_line)
852 {
853 struct source_line *iter;
854 struct rb_node **p = &root->rb_node;
855 struct rb_node *parent = NULL;
856
857 while (*p != NULL) {
858 parent = *p;
859 iter = rb_entry(parent, struct source_line, node);
860
861 if (src_line->percent > iter->percent)
862 p = &(*p)->rb_left;
863 else
864 p = &(*p)->rb_right;
865 }
866
867 rb_link_node(&src_line->node, parent, p);
868 rb_insert_color(&src_line->node, root);
869 }
870
871 static void symbol__free_source_line(struct symbol *sym, int len)
872 {
873 struct annotation *notes = symbol__annotation(sym);
874 struct source_line *src_line = notes->src->lines;
875 int i;
876
877 for (i = 0; i < len; i++)
878 free(src_line[i].path);
879
880 free(src_line);
881 notes->src->lines = NULL;
882 }
883
884 /* Get the filename:line for the colored entries */
885 static int symbol__get_source_line(struct symbol *sym, struct map *map,
886 int evidx, struct rb_root *root, int len,
887 const char *filename)
888 {
889 u64 start;
890 int i;
891 char cmd[PATH_MAX * 2];
892 struct source_line *src_line;
893 struct annotation *notes = symbol__annotation(sym);
894 struct sym_hist *h = annotation__histogram(notes, evidx);
895
896 if (!h->sum)
897 return 0;
898
899 src_line = notes->src->lines = calloc(len, sizeof(struct source_line));
900 if (!notes->src->lines)
901 return -1;
902
903 start = map__rip_2objdump(map, sym->start);
904
905 for (i = 0; i < len; i++) {
906 char *path = NULL;
907 size_t line_len;
908 u64 offset;
909 FILE *fp;
910
911 src_line[i].percent = 100.0 * h->addr[i] / h->sum;
912 if (src_line[i].percent <= 0.5)
913 continue;
914
915 offset = start + i;
916 sprintf(cmd, "addr2line -e %s %016" PRIx64, filename, offset);
917 fp = popen(cmd, "r");
918 if (!fp)
919 continue;
920
921 if (getline(&path, &line_len, fp) < 0 || !line_len)
922 goto next;
923
924 src_line[i].path = malloc(sizeof(char) * line_len + 1);
925 if (!src_line[i].path)
926 goto next;
927
928 strcpy(src_line[i].path, path);
929 insert_source_line(root, &src_line[i]);
930
931 next:
932 pclose(fp);
933 }
934
935 return 0;
936 }
937
938 static void print_summary(struct rb_root *root, const char *filename)
939 {
940 struct source_line *src_line;
941 struct rb_node *node;
942
943 printf("\nSorted summary for file %s\n", filename);
944 printf("----------------------------------------------\n\n");
945
946 if (RB_EMPTY_ROOT(root)) {
947 printf(" Nothing higher than %1.1f%%\n", MIN_GREEN);
948 return;
949 }
950
951 node = rb_first(root);
952 while (node) {
953 double percent;
954 const char *color;
955 char *path;
956
957 src_line = rb_entry(node, struct source_line, node);
958 percent = src_line->percent;
959 color = get_percent_color(percent);
960 path = src_line->path;
961
962 color_fprintf(stdout, color, " %7.2f %s", percent, path);
963 node = rb_next(node);
964 }
965 }
966
967 static void symbol__annotate_hits(struct symbol *sym, int evidx)
968 {
969 struct annotation *notes = symbol__annotation(sym);
970 struct sym_hist *h = annotation__histogram(notes, evidx);
971 u64 len = symbol__size(sym), offset;
972
973 for (offset = 0; offset < len; ++offset)
974 if (h->addr[offset] != 0)
975 printf("%*" PRIx64 ": %" PRIu64 "\n", BITS_PER_LONG / 2,
976 sym->start + offset, h->addr[offset]);
977 printf("%*s: %" PRIu64 "\n", BITS_PER_LONG / 2, "h->sum", h->sum);
978 }
979
980 int symbol__annotate_printf(struct symbol *sym, struct map *map, int evidx,
981 bool full_paths, int min_pcnt, int max_lines,
982 int context)
983 {
984 struct dso *dso = map->dso;
985 const char *filename = dso->long_name, *d_filename;
986 struct annotation *notes = symbol__annotation(sym);
987 struct disasm_line *pos, *queue = NULL;
988 u64 start = map__rip_2objdump(map, sym->start);
989 int printed = 2, queue_len = 0;
990 int more = 0;
991 u64 len;
992
993 if (full_paths)
994 d_filename = filename;
995 else
996 d_filename = basename(filename);
997
998 len = symbol__size(sym);
999
1000 printf(" Percent | Source code & Disassembly of %s\n", d_filename);
1001 printf("------------------------------------------------\n");
1002
1003 if (verbose)
1004 symbol__annotate_hits(sym, evidx);
1005
1006 list_for_each_entry(pos, &notes->src->source, node) {
1007 if (context && queue == NULL) {
1008 queue = pos;
1009 queue_len = 0;
1010 }
1011
1012 switch (disasm_line__print(pos, sym, start, evidx, len,
1013 min_pcnt, printed, max_lines,
1014 queue)) {
1015 case 0:
1016 ++printed;
1017 if (context) {
1018 printed += queue_len;
1019 queue = NULL;
1020 queue_len = 0;
1021 }
1022 break;
1023 case 1:
1024 /* filtered by max_lines */
1025 ++more;
1026 break;
1027 case -1:
1028 default:
1029 /*
1030 * Filtered by min_pcnt or non IP lines when
1031 * context != 0
1032 */
1033 if (!context)
1034 break;
1035 if (queue_len == context)
1036 queue = list_entry(queue->node.next, typeof(*queue), node);
1037 else
1038 ++queue_len;
1039 break;
1040 }
1041 }
1042
1043 return more;
1044 }
1045
1046 void symbol__annotate_zero_histogram(struct symbol *sym, int evidx)
1047 {
1048 struct annotation *notes = symbol__annotation(sym);
1049 struct sym_hist *h = annotation__histogram(notes, evidx);
1050
1051 memset(h, 0, notes->src->sizeof_sym_hist);
1052 }
1053
1054 void symbol__annotate_decay_histogram(struct symbol *sym, int evidx)
1055 {
1056 struct annotation *notes = symbol__annotation(sym);
1057 struct sym_hist *h = annotation__histogram(notes, evidx);
1058 int len = symbol__size(sym), offset;
1059
1060 h->sum = 0;
1061 for (offset = 0; offset < len; ++offset) {
1062 h->addr[offset] = h->addr[offset] * 7 / 8;
1063 h->sum += h->addr[offset];
1064 }
1065 }
1066
1067 void disasm__purge(struct list_head *head)
1068 {
1069 struct disasm_line *pos, *n;
1070
1071 list_for_each_entry_safe(pos, n, head, node) {
1072 list_del(&pos->node);
1073 disasm_line__free(pos);
1074 }
1075 }
1076
1077 static size_t disasm_line__fprintf(struct disasm_line *dl, FILE *fp)
1078 {
1079 size_t printed;
1080
1081 if (dl->offset == -1)
1082 return fprintf(fp, "%s\n", dl->line);
1083
1084 printed = fprintf(fp, "%#" PRIx64 " %s", dl->offset, dl->name);
1085
1086 if (dl->ops.raw[0] != '\0') {
1087 printed += fprintf(fp, "%.*s %s\n", 6 - (int)printed, " ",
1088 dl->ops.raw);
1089 }
1090
1091 return printed + fprintf(fp, "\n");
1092 }
1093
1094 size_t disasm__fprintf(struct list_head *head, FILE *fp)
1095 {
1096 struct disasm_line *pos;
1097 size_t printed = 0;
1098
1099 list_for_each_entry(pos, head, node)
1100 printed += disasm_line__fprintf(pos, fp);
1101
1102 return printed;
1103 }
1104
1105 int symbol__tty_annotate(struct symbol *sym, struct map *map, int evidx,
1106 bool print_lines, bool full_paths, int min_pcnt,
1107 int max_lines)
1108 {
1109 struct dso *dso = map->dso;
1110 const char *filename = dso->long_name;
1111 struct rb_root source_line = RB_ROOT;
1112 u64 len;
1113
1114 if (symbol__annotate(sym, map, 0) < 0)
1115 return -1;
1116
1117 len = symbol__size(sym);
1118
1119 if (print_lines) {
1120 symbol__get_source_line(sym, map, evidx, &source_line,
1121 len, filename);
1122 print_summary(&source_line, filename);
1123 }
1124
1125 symbol__annotate_printf(sym, map, evidx, full_paths,
1126 min_pcnt, max_lines, 0);
1127 if (print_lines)
1128 symbol__free_source_line(sym, len);
1129
1130 disasm__purge(&symbol__annotation(sym)->src->source);
1131
1132 return 0;
1133 }
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