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MAINTAINERS: Add phy-miphy28lp.c and phy-miphy365x.c to ARCH/STI architecture
[deliverable/linux.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 "ui/ui.h"
12 #include "sort.h"
13 #include "build-id.h"
14 #include "color.h"
15 #include "cache.h"
16 #include "symbol.h"
17 #include "debug.h"
18 #include "annotate.h"
19 #include "evsel.h"
20 #include <regex.h>
21 #include <pthread.h>
22 #include <linux/bitops.h>
23
24 const char *disassembler_style;
25 const char *objdump_path;
26 static regex_t file_lineno;
27
28 static struct ins *ins__find(const char *name);
29 static int disasm_line__parse(char *line, char **namep, char **rawp);
30
31 static void ins__delete(struct ins_operands *ops)
32 {
33 zfree(&ops->source.raw);
34 zfree(&ops->source.name);
35 zfree(&ops->target.raw);
36 zfree(&ops->target.name);
37 }
38
39 static int ins__raw_scnprintf(struct ins *ins, char *bf, size_t size,
40 struct ins_operands *ops)
41 {
42 return scnprintf(bf, size, "%-6.6s %s", ins->name, ops->raw);
43 }
44
45 int ins__scnprintf(struct ins *ins, char *bf, size_t size,
46 struct ins_operands *ops)
47 {
48 if (ins->ops->scnprintf)
49 return ins->ops->scnprintf(ins, bf, size, ops);
50
51 return ins__raw_scnprintf(ins, bf, size, ops);
52 }
53
54 static int call__parse(struct ins_operands *ops)
55 {
56 char *endptr, *tok, *name;
57
58 ops->target.addr = strtoull(ops->raw, &endptr, 16);
59
60 name = strchr(endptr, '<');
61 if (name == NULL)
62 goto indirect_call;
63
64 name++;
65
66 tok = strchr(name, '>');
67 if (tok == NULL)
68 return -1;
69
70 *tok = '\0';
71 ops->target.name = strdup(name);
72 *tok = '>';
73
74 return ops->target.name == NULL ? -1 : 0;
75
76 indirect_call:
77 tok = strchr(endptr, '(');
78 if (tok != NULL) {
79 ops->target.addr = 0;
80 return 0;
81 }
82
83 tok = strchr(endptr, '*');
84 if (tok == NULL)
85 return -1;
86
87 ops->target.addr = strtoull(tok + 1, NULL, 16);
88 return 0;
89 }
90
91 static int call__scnprintf(struct ins *ins, char *bf, size_t size,
92 struct ins_operands *ops)
93 {
94 if (ops->target.name)
95 return scnprintf(bf, size, "%-6.6s %s", ins->name, ops->target.name);
96
97 if (ops->target.addr == 0)
98 return ins__raw_scnprintf(ins, bf, size, ops);
99
100 return scnprintf(bf, size, "%-6.6s *%" PRIx64, ins->name, ops->target.addr);
101 }
102
103 static struct ins_ops call_ops = {
104 .parse = call__parse,
105 .scnprintf = call__scnprintf,
106 };
107
108 bool ins__is_call(const struct ins *ins)
109 {
110 return ins->ops == &call_ops;
111 }
112
113 static int jump__parse(struct ins_operands *ops)
114 {
115 const char *s = strchr(ops->raw, '+');
116
117 ops->target.addr = strtoull(ops->raw, NULL, 16);
118
119 if (s++ != NULL)
120 ops->target.offset = strtoull(s, NULL, 16);
121 else
122 ops->target.offset = UINT64_MAX;
123
124 return 0;
125 }
126
127 static int jump__scnprintf(struct ins *ins, char *bf, size_t size,
128 struct ins_operands *ops)
129 {
130 return scnprintf(bf, size, "%-6.6s %" PRIx64, ins->name, ops->target.offset);
131 }
132
133 static struct ins_ops jump_ops = {
134 .parse = jump__parse,
135 .scnprintf = jump__scnprintf,
136 };
137
138 bool ins__is_jump(const struct ins *ins)
139 {
140 return ins->ops == &jump_ops;
141 }
142
143 static int comment__symbol(char *raw, char *comment, u64 *addrp, char **namep)
144 {
145 char *endptr, *name, *t;
146
147 if (strstr(raw, "(%rip)") == NULL)
148 return 0;
149
150 *addrp = strtoull(comment, &endptr, 16);
151 name = strchr(endptr, '<');
152 if (name == NULL)
153 return -1;
154
155 name++;
156
157 t = strchr(name, '>');
158 if (t == NULL)
159 return 0;
160
161 *t = '\0';
162 *namep = strdup(name);
163 *t = '>';
164
165 return 0;
166 }
167
168 static int lock__parse(struct ins_operands *ops)
169 {
170 char *name;
171
172 ops->locked.ops = zalloc(sizeof(*ops->locked.ops));
173 if (ops->locked.ops == NULL)
174 return 0;
175
176 if (disasm_line__parse(ops->raw, &name, &ops->locked.ops->raw) < 0)
177 goto out_free_ops;
178
179 ops->locked.ins = ins__find(name);
180 free(name);
181
182 if (ops->locked.ins == NULL)
183 goto out_free_ops;
184
185 if (!ops->locked.ins->ops)
186 return 0;
187
188 if (ops->locked.ins->ops->parse &&
189 ops->locked.ins->ops->parse(ops->locked.ops) < 0)
190 goto out_free_ops;
191
192 return 0;
193
194 out_free_ops:
195 zfree(&ops->locked.ops);
196 return 0;
197 }
198
199 static int lock__scnprintf(struct ins *ins, char *bf, size_t size,
200 struct ins_operands *ops)
201 {
202 int printed;
203
204 if (ops->locked.ins == NULL)
205 return ins__raw_scnprintf(ins, bf, size, ops);
206
207 printed = scnprintf(bf, size, "%-6.6s ", ins->name);
208 return printed + ins__scnprintf(ops->locked.ins, bf + printed,
209 size - printed, ops->locked.ops);
210 }
211
212 static void lock__delete(struct ins_operands *ops)
213 {
214 struct ins *ins = ops->locked.ins;
215
216 if (ins && ins->ops->free)
217 ins->ops->free(ops->locked.ops);
218 else
219 ins__delete(ops->locked.ops);
220
221 zfree(&ops->locked.ops);
222 zfree(&ops->target.raw);
223 zfree(&ops->target.name);
224 }
225
226 static struct ins_ops lock_ops = {
227 .free = lock__delete,
228 .parse = lock__parse,
229 .scnprintf = lock__scnprintf,
230 };
231
232 static int mov__parse(struct ins_operands *ops)
233 {
234 char *s = strchr(ops->raw, ','), *target, *comment, prev;
235
236 if (s == NULL)
237 return -1;
238
239 *s = '\0';
240 ops->source.raw = strdup(ops->raw);
241 *s = ',';
242
243 if (ops->source.raw == NULL)
244 return -1;
245
246 target = ++s;
247 comment = strchr(s, '#');
248
249 if (comment != NULL)
250 s = comment - 1;
251 else
252 s = strchr(s, '\0') - 1;
253
254 while (s > target && isspace(s[0]))
255 --s;
256 s++;
257 prev = *s;
258 *s = '\0';
259
260 ops->target.raw = strdup(target);
261 *s = prev;
262
263 if (ops->target.raw == NULL)
264 goto out_free_source;
265
266 if (comment == NULL)
267 return 0;
268
269 while (comment[0] != '\0' && isspace(comment[0]))
270 ++comment;
271
272 comment__symbol(ops->source.raw, comment, &ops->source.addr, &ops->source.name);
273 comment__symbol(ops->target.raw, comment, &ops->target.addr, &ops->target.name);
274
275 return 0;
276
277 out_free_source:
278 zfree(&ops->source.raw);
279 return -1;
280 }
281
282 static int mov__scnprintf(struct ins *ins, char *bf, size_t size,
283 struct ins_operands *ops)
284 {
285 return scnprintf(bf, size, "%-6.6s %s,%s", ins->name,
286 ops->source.name ?: ops->source.raw,
287 ops->target.name ?: ops->target.raw);
288 }
289
290 static struct ins_ops mov_ops = {
291 .parse = mov__parse,
292 .scnprintf = mov__scnprintf,
293 };
294
295 static int dec__parse(struct ins_operands *ops)
296 {
297 char *target, *comment, *s, prev;
298
299 target = s = ops->raw;
300
301 while (s[0] != '\0' && !isspace(s[0]))
302 ++s;
303 prev = *s;
304 *s = '\0';
305
306 ops->target.raw = strdup(target);
307 *s = prev;
308
309 if (ops->target.raw == NULL)
310 return -1;
311
312 comment = strchr(s, '#');
313 if (comment == NULL)
314 return 0;
315
316 while (comment[0] != '\0' && isspace(comment[0]))
317 ++comment;
318
319 comment__symbol(ops->target.raw, comment, &ops->target.addr, &ops->target.name);
320
321 return 0;
322 }
323
324 static int dec__scnprintf(struct ins *ins, char *bf, size_t size,
325 struct ins_operands *ops)
326 {
327 return scnprintf(bf, size, "%-6.6s %s", ins->name,
328 ops->target.name ?: ops->target.raw);
329 }
330
331 static struct ins_ops dec_ops = {
332 .parse = dec__parse,
333 .scnprintf = dec__scnprintf,
334 };
335
336 static int nop__scnprintf(struct ins *ins __maybe_unused, char *bf, size_t size,
337 struct ins_operands *ops __maybe_unused)
338 {
339 return scnprintf(bf, size, "%-6.6s", "nop");
340 }
341
342 static struct ins_ops nop_ops = {
343 .scnprintf = nop__scnprintf,
344 };
345
346 /*
347 * Must be sorted by name!
348 */
349 static struct ins instructions[] = {
350 { .name = "add", .ops = &mov_ops, },
351 { .name = "addl", .ops = &mov_ops, },
352 { .name = "addq", .ops = &mov_ops, },
353 { .name = "addw", .ops = &mov_ops, },
354 { .name = "and", .ops = &mov_ops, },
355 { .name = "bts", .ops = &mov_ops, },
356 { .name = "call", .ops = &call_ops, },
357 { .name = "callq", .ops = &call_ops, },
358 { .name = "cmp", .ops = &mov_ops, },
359 { .name = "cmpb", .ops = &mov_ops, },
360 { .name = "cmpl", .ops = &mov_ops, },
361 { .name = "cmpq", .ops = &mov_ops, },
362 { .name = "cmpw", .ops = &mov_ops, },
363 { .name = "cmpxch", .ops = &mov_ops, },
364 { .name = "dec", .ops = &dec_ops, },
365 { .name = "decl", .ops = &dec_ops, },
366 { .name = "imul", .ops = &mov_ops, },
367 { .name = "inc", .ops = &dec_ops, },
368 { .name = "incl", .ops = &dec_ops, },
369 { .name = "ja", .ops = &jump_ops, },
370 { .name = "jae", .ops = &jump_ops, },
371 { .name = "jb", .ops = &jump_ops, },
372 { .name = "jbe", .ops = &jump_ops, },
373 { .name = "jc", .ops = &jump_ops, },
374 { .name = "jcxz", .ops = &jump_ops, },
375 { .name = "je", .ops = &jump_ops, },
376 { .name = "jecxz", .ops = &jump_ops, },
377 { .name = "jg", .ops = &jump_ops, },
378 { .name = "jge", .ops = &jump_ops, },
379 { .name = "jl", .ops = &jump_ops, },
380 { .name = "jle", .ops = &jump_ops, },
381 { .name = "jmp", .ops = &jump_ops, },
382 { .name = "jmpq", .ops = &jump_ops, },
383 { .name = "jna", .ops = &jump_ops, },
384 { .name = "jnae", .ops = &jump_ops, },
385 { .name = "jnb", .ops = &jump_ops, },
386 { .name = "jnbe", .ops = &jump_ops, },
387 { .name = "jnc", .ops = &jump_ops, },
388 { .name = "jne", .ops = &jump_ops, },
389 { .name = "jng", .ops = &jump_ops, },
390 { .name = "jnge", .ops = &jump_ops, },
391 { .name = "jnl", .ops = &jump_ops, },
392 { .name = "jnle", .ops = &jump_ops, },
393 { .name = "jno", .ops = &jump_ops, },
394 { .name = "jnp", .ops = &jump_ops, },
395 { .name = "jns", .ops = &jump_ops, },
396 { .name = "jnz", .ops = &jump_ops, },
397 { .name = "jo", .ops = &jump_ops, },
398 { .name = "jp", .ops = &jump_ops, },
399 { .name = "jpe", .ops = &jump_ops, },
400 { .name = "jpo", .ops = &jump_ops, },
401 { .name = "jrcxz", .ops = &jump_ops, },
402 { .name = "js", .ops = &jump_ops, },
403 { .name = "jz", .ops = &jump_ops, },
404 { .name = "lea", .ops = &mov_ops, },
405 { .name = "lock", .ops = &lock_ops, },
406 { .name = "mov", .ops = &mov_ops, },
407 { .name = "movb", .ops = &mov_ops, },
408 { .name = "movdqa",.ops = &mov_ops, },
409 { .name = "movl", .ops = &mov_ops, },
410 { .name = "movq", .ops = &mov_ops, },
411 { .name = "movslq", .ops = &mov_ops, },
412 { .name = "movzbl", .ops = &mov_ops, },
413 { .name = "movzwl", .ops = &mov_ops, },
414 { .name = "nop", .ops = &nop_ops, },
415 { .name = "nopl", .ops = &nop_ops, },
416 { .name = "nopw", .ops = &nop_ops, },
417 { .name = "or", .ops = &mov_ops, },
418 { .name = "orl", .ops = &mov_ops, },
419 { .name = "test", .ops = &mov_ops, },
420 { .name = "testb", .ops = &mov_ops, },
421 { .name = "testl", .ops = &mov_ops, },
422 { .name = "xadd", .ops = &mov_ops, },
423 { .name = "xbeginl", .ops = &jump_ops, },
424 { .name = "xbeginq", .ops = &jump_ops, },
425 };
426
427 static int ins__cmp(const void *name, const void *insp)
428 {
429 const struct ins *ins = insp;
430
431 return strcmp(name, ins->name);
432 }
433
434 static struct ins *ins__find(const char *name)
435 {
436 const int nmemb = ARRAY_SIZE(instructions);
437
438 return bsearch(name, instructions, nmemb, sizeof(struct ins), ins__cmp);
439 }
440
441 int symbol__annotate_init(struct map *map __maybe_unused, struct symbol *sym)
442 {
443 struct annotation *notes = symbol__annotation(sym);
444 pthread_mutex_init(&notes->lock, NULL);
445 return 0;
446 }
447
448 int symbol__alloc_hist(struct symbol *sym)
449 {
450 struct annotation *notes = symbol__annotation(sym);
451 const size_t size = symbol__size(sym);
452 size_t sizeof_sym_hist;
453
454 /* Check for overflow when calculating sizeof_sym_hist */
455 if (size > (SIZE_MAX - sizeof(struct sym_hist)) / sizeof(u64))
456 return -1;
457
458 sizeof_sym_hist = (sizeof(struct sym_hist) + size * sizeof(u64));
459
460 /* Check for overflow in zalloc argument */
461 if (sizeof_sym_hist > (SIZE_MAX - sizeof(*notes->src))
462 / symbol_conf.nr_events)
463 return -1;
464
465 notes->src = zalloc(sizeof(*notes->src) + symbol_conf.nr_events * sizeof_sym_hist);
466 if (notes->src == NULL)
467 return -1;
468 notes->src->sizeof_sym_hist = sizeof_sym_hist;
469 notes->src->nr_histograms = symbol_conf.nr_events;
470 INIT_LIST_HEAD(&notes->src->source);
471 return 0;
472 }
473
474 void symbol__annotate_zero_histograms(struct symbol *sym)
475 {
476 struct annotation *notes = symbol__annotation(sym);
477
478 pthread_mutex_lock(&notes->lock);
479 if (notes->src != NULL)
480 memset(notes->src->histograms, 0,
481 notes->src->nr_histograms * notes->src->sizeof_sym_hist);
482 pthread_mutex_unlock(&notes->lock);
483 }
484
485 static int __symbol__inc_addr_samples(struct symbol *sym, struct map *map,
486 struct annotation *notes, int evidx, u64 addr)
487 {
488 unsigned offset;
489 struct sym_hist *h;
490
491 pr_debug3("%s: addr=%#" PRIx64 "\n", __func__, map->unmap_ip(map, addr));
492
493 if (addr < sym->start || addr >= sym->end)
494 return -ERANGE;
495
496 offset = addr - sym->start;
497 h = annotation__histogram(notes, evidx);
498 h->sum++;
499 h->addr[offset]++;
500
501 pr_debug3("%#" PRIx64 " %s: period++ [addr: %#" PRIx64 ", %#" PRIx64
502 ", evidx=%d] => %" PRIu64 "\n", sym->start, sym->name,
503 addr, addr - sym->start, evidx, h->addr[offset]);
504 return 0;
505 }
506
507 static int symbol__inc_addr_samples(struct symbol *sym, struct map *map,
508 int evidx, u64 addr)
509 {
510 struct annotation *notes;
511
512 if (sym == NULL)
513 return 0;
514
515 notes = symbol__annotation(sym);
516 if (notes->src == NULL) {
517 if (symbol__alloc_hist(sym) < 0)
518 return -ENOMEM;
519 }
520
521 return __symbol__inc_addr_samples(sym, map, notes, evidx, addr);
522 }
523
524 int addr_map_symbol__inc_samples(struct addr_map_symbol *ams, int evidx)
525 {
526 return symbol__inc_addr_samples(ams->sym, ams->map, evidx, ams->al_addr);
527 }
528
529 int hist_entry__inc_addr_samples(struct hist_entry *he, int evidx, u64 ip)
530 {
531 return symbol__inc_addr_samples(he->ms.sym, he->ms.map, evidx, ip);
532 }
533
534 static void disasm_line__init_ins(struct disasm_line *dl)
535 {
536 dl->ins = ins__find(dl->name);
537
538 if (dl->ins == NULL)
539 return;
540
541 if (!dl->ins->ops)
542 return;
543
544 if (dl->ins->ops->parse && dl->ins->ops->parse(&dl->ops) < 0)
545 dl->ins = NULL;
546 }
547
548 static int disasm_line__parse(char *line, char **namep, char **rawp)
549 {
550 char *name = line, tmp;
551
552 while (isspace(name[0]))
553 ++name;
554
555 if (name[0] == '\0')
556 return -1;
557
558 *rawp = name + 1;
559
560 while ((*rawp)[0] != '\0' && !isspace((*rawp)[0]))
561 ++*rawp;
562
563 tmp = (*rawp)[0];
564 (*rawp)[0] = '\0';
565 *namep = strdup(name);
566
567 if (*namep == NULL)
568 goto out_free_name;
569
570 (*rawp)[0] = tmp;
571
572 if ((*rawp)[0] != '\0') {
573 (*rawp)++;
574 while (isspace((*rawp)[0]))
575 ++(*rawp);
576 }
577
578 return 0;
579
580 out_free_name:
581 zfree(namep);
582 return -1;
583 }
584
585 static struct disasm_line *disasm_line__new(s64 offset, char *line,
586 size_t privsize, int line_nr)
587 {
588 struct disasm_line *dl = zalloc(sizeof(*dl) + privsize);
589
590 if (dl != NULL) {
591 dl->offset = offset;
592 dl->line = strdup(line);
593 dl->line_nr = line_nr;
594 if (dl->line == NULL)
595 goto out_delete;
596
597 if (offset != -1) {
598 if (disasm_line__parse(dl->line, &dl->name, &dl->ops.raw) < 0)
599 goto out_free_line;
600
601 disasm_line__init_ins(dl);
602 }
603 }
604
605 return dl;
606
607 out_free_line:
608 zfree(&dl->line);
609 out_delete:
610 free(dl);
611 return NULL;
612 }
613
614 void disasm_line__free(struct disasm_line *dl)
615 {
616 zfree(&dl->line);
617 zfree(&dl->name);
618 if (dl->ins && dl->ins->ops->free)
619 dl->ins->ops->free(&dl->ops);
620 else
621 ins__delete(&dl->ops);
622 free(dl);
623 }
624
625 int disasm_line__scnprintf(struct disasm_line *dl, char *bf, size_t size, bool raw)
626 {
627 if (raw || !dl->ins)
628 return scnprintf(bf, size, "%-6.6s %s", dl->name, dl->ops.raw);
629
630 return ins__scnprintf(dl->ins, bf, size, &dl->ops);
631 }
632
633 static void disasm__add(struct list_head *head, struct disasm_line *line)
634 {
635 list_add_tail(&line->node, head);
636 }
637
638 struct disasm_line *disasm__get_next_ip_line(struct list_head *head, struct disasm_line *pos)
639 {
640 list_for_each_entry_continue(pos, head, node)
641 if (pos->offset >= 0)
642 return pos;
643
644 return NULL;
645 }
646
647 double disasm__calc_percent(struct annotation *notes, int evidx, s64 offset,
648 s64 end, const char **path)
649 {
650 struct source_line *src_line = notes->src->lines;
651 double percent = 0.0;
652
653 if (src_line) {
654 size_t sizeof_src_line = sizeof(*src_line) +
655 sizeof(src_line->p) * (src_line->nr_pcnt - 1);
656
657 while (offset < end) {
658 src_line = (void *)notes->src->lines +
659 (sizeof_src_line * offset);
660
661 if (*path == NULL)
662 *path = src_line->path;
663
664 percent += src_line->p[evidx].percent;
665 offset++;
666 }
667 } else {
668 struct sym_hist *h = annotation__histogram(notes, evidx);
669 unsigned int hits = 0;
670
671 while (offset < end)
672 hits += h->addr[offset++];
673
674 if (h->sum)
675 percent = 100.0 * hits / h->sum;
676 }
677
678 return percent;
679 }
680
681 static int disasm_line__print(struct disasm_line *dl, struct symbol *sym, u64 start,
682 struct perf_evsel *evsel, u64 len, int min_pcnt, int printed,
683 int max_lines, struct disasm_line *queue)
684 {
685 static const char *prev_line;
686 static const char *prev_color;
687
688 if (dl->offset != -1) {
689 const char *path = NULL;
690 double percent, max_percent = 0.0;
691 double *ppercents = &percent;
692 int i, nr_percent = 1;
693 const char *color;
694 struct annotation *notes = symbol__annotation(sym);
695 s64 offset = dl->offset;
696 const u64 addr = start + offset;
697 struct disasm_line *next;
698
699 next = disasm__get_next_ip_line(&notes->src->source, dl);
700
701 if (perf_evsel__is_group_event(evsel)) {
702 nr_percent = evsel->nr_members;
703 ppercents = calloc(nr_percent, sizeof(double));
704 if (ppercents == NULL)
705 return -1;
706 }
707
708 for (i = 0; i < nr_percent; i++) {
709 percent = disasm__calc_percent(notes,
710 notes->src->lines ? i : evsel->idx + i,
711 offset,
712 next ? next->offset : (s64) len,
713 &path);
714
715 ppercents[i] = percent;
716 if (percent > max_percent)
717 max_percent = percent;
718 }
719
720 if (max_percent < min_pcnt)
721 return -1;
722
723 if (max_lines && printed >= max_lines)
724 return 1;
725
726 if (queue != NULL) {
727 list_for_each_entry_from(queue, &notes->src->source, node) {
728 if (queue == dl)
729 break;
730 disasm_line__print(queue, sym, start, evsel, len,
731 0, 0, 1, NULL);
732 }
733 }
734
735 color = get_percent_color(max_percent);
736
737 /*
738 * Also color the filename and line if needed, with
739 * the same color than the percentage. Don't print it
740 * twice for close colored addr with the same filename:line
741 */
742 if (path) {
743 if (!prev_line || strcmp(prev_line, path)
744 || color != prev_color) {
745 color_fprintf(stdout, color, " %s", path);
746 prev_line = path;
747 prev_color = color;
748 }
749 }
750
751 for (i = 0; i < nr_percent; i++) {
752 percent = ppercents[i];
753 color = get_percent_color(percent);
754 color_fprintf(stdout, color, " %7.2f", percent);
755 }
756
757 printf(" : ");
758 color_fprintf(stdout, PERF_COLOR_MAGENTA, " %" PRIx64 ":", addr);
759 color_fprintf(stdout, PERF_COLOR_BLUE, "%s\n", dl->line);
760
761 if (ppercents != &percent)
762 free(ppercents);
763
764 } else if (max_lines && printed >= max_lines)
765 return 1;
766 else {
767 int width = 8;
768
769 if (queue)
770 return -1;
771
772 if (perf_evsel__is_group_event(evsel))
773 width *= evsel->nr_members;
774
775 if (!*dl->line)
776 printf(" %*s:\n", width, " ");
777 else
778 printf(" %*s: %s\n", width, " ", dl->line);
779 }
780
781 return 0;
782 }
783
784 /*
785 * symbol__parse_objdump_line() parses objdump output (with -d --no-show-raw)
786 * which looks like following
787 *
788 * 0000000000415500 <_init>:
789 * 415500: sub $0x8,%rsp
790 * 415504: mov 0x2f5ad5(%rip),%rax # 70afe0 <_DYNAMIC+0x2f8>
791 * 41550b: test %rax,%rax
792 * 41550e: je 415515 <_init+0x15>
793 * 415510: callq 416e70 <__gmon_start__@plt>
794 * 415515: add $0x8,%rsp
795 * 415519: retq
796 *
797 * it will be parsed and saved into struct disasm_line as
798 * <offset> <name> <ops.raw>
799 *
800 * The offset will be a relative offset from the start of the symbol and -1
801 * means that it's not a disassembly line so should be treated differently.
802 * The ops.raw part will be parsed further according to type of the instruction.
803 */
804 static int symbol__parse_objdump_line(struct symbol *sym, struct map *map,
805 FILE *file, size_t privsize,
806 int *line_nr)
807 {
808 struct annotation *notes = symbol__annotation(sym);
809 struct disasm_line *dl;
810 char *line = NULL, *parsed_line, *tmp, *tmp2, *c;
811 size_t line_len;
812 s64 line_ip, offset = -1;
813 regmatch_t match[2];
814
815 if (getline(&line, &line_len, file) < 0)
816 return -1;
817
818 if (!line)
819 return -1;
820
821 while (line_len != 0 && isspace(line[line_len - 1]))
822 line[--line_len] = '\0';
823
824 c = strchr(line, '\n');
825 if (c)
826 *c = 0;
827
828 line_ip = -1;
829 parsed_line = line;
830
831 /* /filename:linenr ? Save line number and ignore. */
832 if (regexec(&file_lineno, line, 2, match, 0) == 0) {
833 *line_nr = atoi(line + match[1].rm_so);
834 return 0;
835 }
836
837 /*
838 * Strip leading spaces:
839 */
840 tmp = line;
841 while (*tmp) {
842 if (*tmp != ' ')
843 break;
844 tmp++;
845 }
846
847 if (*tmp) {
848 /*
849 * Parse hexa addresses followed by ':'
850 */
851 line_ip = strtoull(tmp, &tmp2, 16);
852 if (*tmp2 != ':' || tmp == tmp2 || tmp2[1] == '\0')
853 line_ip = -1;
854 }
855
856 if (line_ip != -1) {
857 u64 start = map__rip_2objdump(map, sym->start),
858 end = map__rip_2objdump(map, sym->end);
859
860 offset = line_ip - start;
861 if ((u64)line_ip < start || (u64)line_ip >= end)
862 offset = -1;
863 else
864 parsed_line = tmp2 + 1;
865 }
866
867 dl = disasm_line__new(offset, parsed_line, privsize, *line_nr);
868 free(line);
869 (*line_nr)++;
870
871 if (dl == NULL)
872 return -1;
873
874 if (dl->ops.target.offset == UINT64_MAX)
875 dl->ops.target.offset = dl->ops.target.addr -
876 map__rip_2objdump(map, sym->start);
877
878 /* kcore has no symbols, so add the call target name */
879 if (dl->ins && ins__is_call(dl->ins) && !dl->ops.target.name) {
880 struct addr_map_symbol target = {
881 .map = map,
882 .addr = dl->ops.target.addr,
883 };
884
885 if (!map_groups__find_ams(&target, NULL) &&
886 target.sym->start == target.al_addr)
887 dl->ops.target.name = strdup(target.sym->name);
888 }
889
890 disasm__add(&notes->src->source, dl);
891
892 return 0;
893 }
894
895 static __attribute__((constructor)) void symbol__init_regexpr(void)
896 {
897 regcomp(&file_lineno, "^/[^:]+:([0-9]+)", REG_EXTENDED);
898 }
899
900 static void delete_last_nop(struct symbol *sym)
901 {
902 struct annotation *notes = symbol__annotation(sym);
903 struct list_head *list = &notes->src->source;
904 struct disasm_line *dl;
905
906 while (!list_empty(list)) {
907 dl = list_entry(list->prev, struct disasm_line, node);
908
909 if (dl->ins && dl->ins->ops) {
910 if (dl->ins->ops != &nop_ops)
911 return;
912 } else {
913 if (!strstr(dl->line, " nop ") &&
914 !strstr(dl->line, " nopl ") &&
915 !strstr(dl->line, " nopw "))
916 return;
917 }
918
919 list_del(&dl->node);
920 disasm_line__free(dl);
921 }
922 }
923
924 int symbol__annotate(struct symbol *sym, struct map *map, size_t privsize)
925 {
926 struct dso *dso = map->dso;
927 char *filename = dso__build_id_filename(dso, NULL, 0);
928 bool free_filename = true;
929 char command[PATH_MAX * 2];
930 FILE *file;
931 int err = 0;
932 char symfs_filename[PATH_MAX];
933 struct kcore_extract kce;
934 bool delete_extract = false;
935 int lineno = 0;
936
937 if (filename)
938 symbol__join_symfs(symfs_filename, filename);
939
940 if (filename == NULL) {
941 if (dso->has_build_id) {
942 pr_err("Can't annotate %s: not enough memory\n",
943 sym->name);
944 return -ENOMEM;
945 }
946 goto fallback;
947 } else if (dso__is_kcore(dso)) {
948 goto fallback;
949 } else if (readlink(symfs_filename, command, sizeof(command)) < 0 ||
950 strstr(command, "[kernel.kallsyms]") ||
951 access(symfs_filename, R_OK)) {
952 free(filename);
953 fallback:
954 /*
955 * If we don't have build-ids or the build-id file isn't in the
956 * cache, or is just a kallsyms file, well, lets hope that this
957 * DSO is the same as when 'perf record' ran.
958 */
959 filename = (char *)dso->long_name;
960 symbol__join_symfs(symfs_filename, filename);
961 free_filename = false;
962 }
963
964 if (dso->symtab_type == DSO_BINARY_TYPE__KALLSYMS &&
965 !dso__is_kcore(dso)) {
966 char bf[BUILD_ID_SIZE * 2 + 16] = " with build id ";
967 char *build_id_msg = NULL;
968
969 if (dso->annotate_warned)
970 goto out_free_filename;
971
972 if (dso->has_build_id) {
973 build_id__sprintf(dso->build_id,
974 sizeof(dso->build_id), bf + 15);
975 build_id_msg = bf;
976 }
977 err = -ENOENT;
978 dso->annotate_warned = 1;
979 pr_err("Can't annotate %s:\n\n"
980 "No vmlinux file%s\nwas found in the path.\n\n"
981 "Please use:\n\n"
982 " perf buildid-cache -vu vmlinux\n\n"
983 "or:\n\n"
984 " --vmlinux vmlinux\n",
985 sym->name, build_id_msg ?: "");
986 goto out_free_filename;
987 }
988
989 pr_debug("%s: filename=%s, sym=%s, start=%#" PRIx64 ", end=%#" PRIx64 "\n", __func__,
990 filename, sym->name, map->unmap_ip(map, sym->start),
991 map->unmap_ip(map, sym->end));
992
993 pr_debug("annotating [%p] %30s : [%p] %30s\n",
994 dso, dso->long_name, sym, sym->name);
995
996 if (dso__is_kcore(dso)) {
997 kce.kcore_filename = symfs_filename;
998 kce.addr = map__rip_2objdump(map, sym->start);
999 kce.offs = sym->start;
1000 kce.len = sym->end - sym->start;
1001 if (!kcore_extract__create(&kce)) {
1002 delete_extract = true;
1003 strlcpy(symfs_filename, kce.extract_filename,
1004 sizeof(symfs_filename));
1005 if (free_filename) {
1006 free(filename);
1007 free_filename = false;
1008 }
1009 filename = symfs_filename;
1010 }
1011 }
1012
1013 snprintf(command, sizeof(command),
1014 "%s %s%s --start-address=0x%016" PRIx64
1015 " --stop-address=0x%016" PRIx64
1016 " -l -d %s %s -C %s 2>/dev/null|grep -v %s|expand",
1017 objdump_path ? objdump_path : "objdump",
1018 disassembler_style ? "-M " : "",
1019 disassembler_style ? disassembler_style : "",
1020 map__rip_2objdump(map, sym->start),
1021 map__rip_2objdump(map, sym->end),
1022 symbol_conf.annotate_asm_raw ? "" : "--no-show-raw",
1023 symbol_conf.annotate_src ? "-S" : "",
1024 symfs_filename, filename);
1025
1026 pr_debug("Executing: %s\n", command);
1027
1028 file = popen(command, "r");
1029 if (!file)
1030 goto out_free_filename;
1031
1032 while (!feof(file))
1033 if (symbol__parse_objdump_line(sym, map, file, privsize,
1034 &lineno) < 0)
1035 break;
1036
1037 /*
1038 * kallsyms does not have symbol sizes so there may a nop at the end.
1039 * Remove it.
1040 */
1041 if (dso__is_kcore(dso))
1042 delete_last_nop(sym);
1043
1044 pclose(file);
1045 out_free_filename:
1046 if (delete_extract)
1047 kcore_extract__delete(&kce);
1048 if (free_filename)
1049 free(filename);
1050 return err;
1051 }
1052
1053 static void insert_source_line(struct rb_root *root, struct source_line *src_line)
1054 {
1055 struct source_line *iter;
1056 struct rb_node **p = &root->rb_node;
1057 struct rb_node *parent = NULL;
1058 int i, ret;
1059
1060 while (*p != NULL) {
1061 parent = *p;
1062 iter = rb_entry(parent, struct source_line, node);
1063
1064 ret = strcmp(iter->path, src_line->path);
1065 if (ret == 0) {
1066 for (i = 0; i < src_line->nr_pcnt; i++)
1067 iter->p[i].percent_sum += src_line->p[i].percent;
1068 return;
1069 }
1070
1071 if (ret < 0)
1072 p = &(*p)->rb_left;
1073 else
1074 p = &(*p)->rb_right;
1075 }
1076
1077 for (i = 0; i < src_line->nr_pcnt; i++)
1078 src_line->p[i].percent_sum = src_line->p[i].percent;
1079
1080 rb_link_node(&src_line->node, parent, p);
1081 rb_insert_color(&src_line->node, root);
1082 }
1083
1084 static int cmp_source_line(struct source_line *a, struct source_line *b)
1085 {
1086 int i;
1087
1088 for (i = 0; i < a->nr_pcnt; i++) {
1089 if (a->p[i].percent_sum == b->p[i].percent_sum)
1090 continue;
1091 return a->p[i].percent_sum > b->p[i].percent_sum;
1092 }
1093
1094 return 0;
1095 }
1096
1097 static void __resort_source_line(struct rb_root *root, struct source_line *src_line)
1098 {
1099 struct source_line *iter;
1100 struct rb_node **p = &root->rb_node;
1101 struct rb_node *parent = NULL;
1102
1103 while (*p != NULL) {
1104 parent = *p;
1105 iter = rb_entry(parent, struct source_line, node);
1106
1107 if (cmp_source_line(src_line, iter))
1108 p = &(*p)->rb_left;
1109 else
1110 p = &(*p)->rb_right;
1111 }
1112
1113 rb_link_node(&src_line->node, parent, p);
1114 rb_insert_color(&src_line->node, root);
1115 }
1116
1117 static void resort_source_line(struct rb_root *dest_root, struct rb_root *src_root)
1118 {
1119 struct source_line *src_line;
1120 struct rb_node *node;
1121
1122 node = rb_first(src_root);
1123 while (node) {
1124 struct rb_node *next;
1125
1126 src_line = rb_entry(node, struct source_line, node);
1127 next = rb_next(node);
1128 rb_erase(node, src_root);
1129
1130 __resort_source_line(dest_root, src_line);
1131 node = next;
1132 }
1133 }
1134
1135 static void symbol__free_source_line(struct symbol *sym, int len)
1136 {
1137 struct annotation *notes = symbol__annotation(sym);
1138 struct source_line *src_line = notes->src->lines;
1139 size_t sizeof_src_line;
1140 int i;
1141
1142 sizeof_src_line = sizeof(*src_line) +
1143 (sizeof(src_line->p) * (src_line->nr_pcnt - 1));
1144
1145 for (i = 0; i < len; i++) {
1146 free_srcline(src_line->path);
1147 src_line = (void *)src_line + sizeof_src_line;
1148 }
1149
1150 zfree(&notes->src->lines);
1151 }
1152
1153 /* Get the filename:line for the colored entries */
1154 static int symbol__get_source_line(struct symbol *sym, struct map *map,
1155 struct perf_evsel *evsel,
1156 struct rb_root *root, int len)
1157 {
1158 u64 start;
1159 int i, k;
1160 int evidx = evsel->idx;
1161 struct source_line *src_line;
1162 struct annotation *notes = symbol__annotation(sym);
1163 struct sym_hist *h = annotation__histogram(notes, evidx);
1164 struct rb_root tmp_root = RB_ROOT;
1165 int nr_pcnt = 1;
1166 u64 h_sum = h->sum;
1167 size_t sizeof_src_line = sizeof(struct source_line);
1168
1169 if (perf_evsel__is_group_event(evsel)) {
1170 for (i = 1; i < evsel->nr_members; i++) {
1171 h = annotation__histogram(notes, evidx + i);
1172 h_sum += h->sum;
1173 }
1174 nr_pcnt = evsel->nr_members;
1175 sizeof_src_line += (nr_pcnt - 1) * sizeof(src_line->p);
1176 }
1177
1178 if (!h_sum)
1179 return 0;
1180
1181 src_line = notes->src->lines = calloc(len, sizeof_src_line);
1182 if (!notes->src->lines)
1183 return -1;
1184
1185 start = map__rip_2objdump(map, sym->start);
1186
1187 for (i = 0; i < len; i++) {
1188 u64 offset;
1189 double percent_max = 0.0;
1190
1191 src_line->nr_pcnt = nr_pcnt;
1192
1193 for (k = 0; k < nr_pcnt; k++) {
1194 h = annotation__histogram(notes, evidx + k);
1195 src_line->p[k].percent = 100.0 * h->addr[i] / h->sum;
1196
1197 if (src_line->p[k].percent > percent_max)
1198 percent_max = src_line->p[k].percent;
1199 }
1200
1201 if (percent_max <= 0.5)
1202 goto next;
1203
1204 offset = start + i;
1205 src_line->path = get_srcline(map->dso, offset, NULL, false);
1206 insert_source_line(&tmp_root, src_line);
1207
1208 next:
1209 src_line = (void *)src_line + sizeof_src_line;
1210 }
1211
1212 resort_source_line(root, &tmp_root);
1213 return 0;
1214 }
1215
1216 static void print_summary(struct rb_root *root, const char *filename)
1217 {
1218 struct source_line *src_line;
1219 struct rb_node *node;
1220
1221 printf("\nSorted summary for file %s\n", filename);
1222 printf("----------------------------------------------\n\n");
1223
1224 if (RB_EMPTY_ROOT(root)) {
1225 printf(" Nothing higher than %1.1f%%\n", MIN_GREEN);
1226 return;
1227 }
1228
1229 node = rb_first(root);
1230 while (node) {
1231 double percent, percent_max = 0.0;
1232 const char *color;
1233 char *path;
1234 int i;
1235
1236 src_line = rb_entry(node, struct source_line, node);
1237 for (i = 0; i < src_line->nr_pcnt; i++) {
1238 percent = src_line->p[i].percent_sum;
1239 color = get_percent_color(percent);
1240 color_fprintf(stdout, color, " %7.2f", percent);
1241
1242 if (percent > percent_max)
1243 percent_max = percent;
1244 }
1245
1246 path = src_line->path;
1247 color = get_percent_color(percent_max);
1248 color_fprintf(stdout, color, " %s\n", path);
1249
1250 node = rb_next(node);
1251 }
1252 }
1253
1254 static void symbol__annotate_hits(struct symbol *sym, struct perf_evsel *evsel)
1255 {
1256 struct annotation *notes = symbol__annotation(sym);
1257 struct sym_hist *h = annotation__histogram(notes, evsel->idx);
1258 u64 len = symbol__size(sym), offset;
1259
1260 for (offset = 0; offset < len; ++offset)
1261 if (h->addr[offset] != 0)
1262 printf("%*" PRIx64 ": %" PRIu64 "\n", BITS_PER_LONG / 2,
1263 sym->start + offset, h->addr[offset]);
1264 printf("%*s: %" PRIu64 "\n", BITS_PER_LONG / 2, "h->sum", h->sum);
1265 }
1266
1267 int symbol__annotate_printf(struct symbol *sym, struct map *map,
1268 struct perf_evsel *evsel, bool full_paths,
1269 int min_pcnt, int max_lines, int context)
1270 {
1271 struct dso *dso = map->dso;
1272 char *filename;
1273 const char *d_filename;
1274 const char *evsel_name = perf_evsel__name(evsel);
1275 struct annotation *notes = symbol__annotation(sym);
1276 struct disasm_line *pos, *queue = NULL;
1277 u64 start = map__rip_2objdump(map, sym->start);
1278 int printed = 2, queue_len = 0;
1279 int more = 0;
1280 u64 len;
1281 int width = 8;
1282 int namelen, evsel_name_len, graph_dotted_len;
1283
1284 filename = strdup(dso->long_name);
1285 if (!filename)
1286 return -ENOMEM;
1287
1288 if (full_paths)
1289 d_filename = filename;
1290 else
1291 d_filename = basename(filename);
1292
1293 len = symbol__size(sym);
1294 namelen = strlen(d_filename);
1295 evsel_name_len = strlen(evsel_name);
1296
1297 if (perf_evsel__is_group_event(evsel))
1298 width *= evsel->nr_members;
1299
1300 printf(" %-*.*s| Source code & Disassembly of %s for %s\n",
1301 width, width, "Percent", d_filename, evsel_name);
1302
1303 graph_dotted_len = width + namelen + evsel_name_len;
1304 printf("-%-*.*s-----------------------------------------\n",
1305 graph_dotted_len, graph_dotted_len, graph_dotted_line);
1306
1307 if (verbose)
1308 symbol__annotate_hits(sym, evsel);
1309
1310 list_for_each_entry(pos, &notes->src->source, node) {
1311 if (context && queue == NULL) {
1312 queue = pos;
1313 queue_len = 0;
1314 }
1315
1316 switch (disasm_line__print(pos, sym, start, evsel, len,
1317 min_pcnt, printed, max_lines,
1318 queue)) {
1319 case 0:
1320 ++printed;
1321 if (context) {
1322 printed += queue_len;
1323 queue = NULL;
1324 queue_len = 0;
1325 }
1326 break;
1327 case 1:
1328 /* filtered by max_lines */
1329 ++more;
1330 break;
1331 case -1:
1332 default:
1333 /*
1334 * Filtered by min_pcnt or non IP lines when
1335 * context != 0
1336 */
1337 if (!context)
1338 break;
1339 if (queue_len == context)
1340 queue = list_entry(queue->node.next, typeof(*queue), node);
1341 else
1342 ++queue_len;
1343 break;
1344 }
1345 }
1346
1347 free(filename);
1348
1349 return more;
1350 }
1351
1352 void symbol__annotate_zero_histogram(struct symbol *sym, int evidx)
1353 {
1354 struct annotation *notes = symbol__annotation(sym);
1355 struct sym_hist *h = annotation__histogram(notes, evidx);
1356
1357 memset(h, 0, notes->src->sizeof_sym_hist);
1358 }
1359
1360 void symbol__annotate_decay_histogram(struct symbol *sym, int evidx)
1361 {
1362 struct annotation *notes = symbol__annotation(sym);
1363 struct sym_hist *h = annotation__histogram(notes, evidx);
1364 int len = symbol__size(sym), offset;
1365
1366 h->sum = 0;
1367 for (offset = 0; offset < len; ++offset) {
1368 h->addr[offset] = h->addr[offset] * 7 / 8;
1369 h->sum += h->addr[offset];
1370 }
1371 }
1372
1373 void disasm__purge(struct list_head *head)
1374 {
1375 struct disasm_line *pos, *n;
1376
1377 list_for_each_entry_safe(pos, n, head, node) {
1378 list_del(&pos->node);
1379 disasm_line__free(pos);
1380 }
1381 }
1382
1383 static size_t disasm_line__fprintf(struct disasm_line *dl, FILE *fp)
1384 {
1385 size_t printed;
1386
1387 if (dl->offset == -1)
1388 return fprintf(fp, "%s\n", dl->line);
1389
1390 printed = fprintf(fp, "%#" PRIx64 " %s", dl->offset, dl->name);
1391
1392 if (dl->ops.raw[0] != '\0') {
1393 printed += fprintf(fp, "%.*s %s\n", 6 - (int)printed, " ",
1394 dl->ops.raw);
1395 }
1396
1397 return printed + fprintf(fp, "\n");
1398 }
1399
1400 size_t disasm__fprintf(struct list_head *head, FILE *fp)
1401 {
1402 struct disasm_line *pos;
1403 size_t printed = 0;
1404
1405 list_for_each_entry(pos, head, node)
1406 printed += disasm_line__fprintf(pos, fp);
1407
1408 return printed;
1409 }
1410
1411 int symbol__tty_annotate(struct symbol *sym, struct map *map,
1412 struct perf_evsel *evsel, bool print_lines,
1413 bool full_paths, int min_pcnt, int max_lines)
1414 {
1415 struct dso *dso = map->dso;
1416 struct rb_root source_line = RB_ROOT;
1417 u64 len;
1418
1419 if (symbol__annotate(sym, map, 0) < 0)
1420 return -1;
1421
1422 len = symbol__size(sym);
1423
1424 if (print_lines) {
1425 symbol__get_source_line(sym, map, evsel, &source_line, len);
1426 print_summary(&source_line, dso->long_name);
1427 }
1428
1429 symbol__annotate_printf(sym, map, evsel, full_paths,
1430 min_pcnt, max_lines, 0);
1431 if (print_lines)
1432 symbol__free_source_line(sym, len);
1433
1434 disasm__purge(&symbol__annotation(sym)->src->source);
1435
1436 return 0;
1437 }
1438
1439 int hist_entry__annotate(struct hist_entry *he, size_t privsize)
1440 {
1441 return symbol__annotate(he->ms.sym, he->ms.map, privsize);
1442 }
1443
1444 bool ui__has_annotation(void)
1445 {
1446 return use_browser == 1 && sort__has_sym;
1447 }
Linux kernel - Deliverables
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