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Merge tag 'perf-core-for-mingo-20160615' of git://git.kernel.org/pub/scm/linux/kernel...
[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 if (ops == NULL)
34 return;
35 zfree(&ops->source.raw);
36 zfree(&ops->source.name);
37 zfree(&ops->target.raw);
38 zfree(&ops->target.name);
39 }
40
41 static int ins__raw_scnprintf(struct ins *ins, char *bf, size_t size,
42 struct ins_operands *ops)
43 {
44 return scnprintf(bf, size, "%-6.6s %s", ins->name, ops->raw);
45 }
46
47 int ins__scnprintf(struct ins *ins, char *bf, size_t size,
48 struct ins_operands *ops)
49 {
50 if (ins->ops->scnprintf)
51 return ins->ops->scnprintf(ins, bf, size, ops);
52
53 return ins__raw_scnprintf(ins, bf, size, ops);
54 }
55
56 static int call__parse(struct ins_operands *ops)
57 {
58 char *endptr, *tok, *name;
59
60 ops->target.addr = strtoull(ops->raw, &endptr, 16);
61
62 name = strchr(endptr, '<');
63 if (name == NULL)
64 goto indirect_call;
65
66 name++;
67
68 #ifdef __arm__
69 if (strchr(name, '+'))
70 return -1;
71 #endif
72
73 tok = strchr(name, '>');
74 if (tok == NULL)
75 return -1;
76
77 *tok = '\0';
78 ops->target.name = strdup(name);
79 *tok = '>';
80
81 return ops->target.name == NULL ? -1 : 0;
82
83 indirect_call:
84 tok = strchr(endptr, '(');
85 if (tok != NULL) {
86 ops->target.addr = 0;
87 return 0;
88 }
89
90 tok = strchr(endptr, '*');
91 if (tok == NULL)
92 return -1;
93
94 ops->target.addr = strtoull(tok + 1, NULL, 16);
95 return 0;
96 }
97
98 static int call__scnprintf(struct ins *ins, char *bf, size_t size,
99 struct ins_operands *ops)
100 {
101 if (ops->target.name)
102 return scnprintf(bf, size, "%-6.6s %s", ins->name, ops->target.name);
103
104 if (ops->target.addr == 0)
105 return ins__raw_scnprintf(ins, bf, size, ops);
106
107 return scnprintf(bf, size, "%-6.6s *%" PRIx64, ins->name, ops->target.addr);
108 }
109
110 static struct ins_ops call_ops = {
111 .parse = call__parse,
112 .scnprintf = call__scnprintf,
113 };
114
115 bool ins__is_call(const struct ins *ins)
116 {
117 return ins->ops == &call_ops;
118 }
119
120 static int jump__parse(struct ins_operands *ops)
121 {
122 const char *s = strchr(ops->raw, '+');
123
124 ops->target.addr = strtoull(ops->raw, NULL, 16);
125
126 if (s++ != NULL)
127 ops->target.offset = strtoull(s, NULL, 16);
128 else
129 ops->target.offset = UINT64_MAX;
130
131 return 0;
132 }
133
134 static int jump__scnprintf(struct ins *ins, char *bf, size_t size,
135 struct ins_operands *ops)
136 {
137 return scnprintf(bf, size, "%-6.6s %" PRIx64, ins->name, ops->target.offset);
138 }
139
140 static struct ins_ops jump_ops = {
141 .parse = jump__parse,
142 .scnprintf = jump__scnprintf,
143 };
144
145 bool ins__is_jump(const struct ins *ins)
146 {
147 return ins->ops == &jump_ops;
148 }
149
150 static int comment__symbol(char *raw, char *comment, u64 *addrp, char **namep)
151 {
152 char *endptr, *name, *t;
153
154 if (strstr(raw, "(%rip)") == NULL)
155 return 0;
156
157 *addrp = strtoull(comment, &endptr, 16);
158 name = strchr(endptr, '<');
159 if (name == NULL)
160 return -1;
161
162 name++;
163
164 t = strchr(name, '>');
165 if (t == NULL)
166 return 0;
167
168 *t = '\0';
169 *namep = strdup(name);
170 *t = '>';
171
172 return 0;
173 }
174
175 static int lock__parse(struct ins_operands *ops)
176 {
177 char *name;
178
179 ops->locked.ops = zalloc(sizeof(*ops->locked.ops));
180 if (ops->locked.ops == NULL)
181 return 0;
182
183 if (disasm_line__parse(ops->raw, &name, &ops->locked.ops->raw) < 0)
184 goto out_free_ops;
185
186 ops->locked.ins = ins__find(name);
187 free(name);
188
189 if (ops->locked.ins == NULL)
190 goto out_free_ops;
191
192 if (!ops->locked.ins->ops)
193 return 0;
194
195 if (ops->locked.ins->ops->parse &&
196 ops->locked.ins->ops->parse(ops->locked.ops) < 0)
197 goto out_free_ops;
198
199 return 0;
200
201 out_free_ops:
202 zfree(&ops->locked.ops);
203 return 0;
204 }
205
206 static int lock__scnprintf(struct ins *ins, char *bf, size_t size,
207 struct ins_operands *ops)
208 {
209 int printed;
210
211 if (ops->locked.ins == NULL)
212 return ins__raw_scnprintf(ins, bf, size, ops);
213
214 printed = scnprintf(bf, size, "%-6.6s ", ins->name);
215 return printed + ins__scnprintf(ops->locked.ins, bf + printed,
216 size - printed, ops->locked.ops);
217 }
218
219 static void lock__delete(struct ins_operands *ops)
220 {
221 struct ins *ins = ops->locked.ins;
222
223 if (ins && ins->ops->free)
224 ins->ops->free(ops->locked.ops);
225 else
226 ins__delete(ops->locked.ops);
227
228 zfree(&ops->locked.ops);
229 zfree(&ops->target.raw);
230 zfree(&ops->target.name);
231 }
232
233 static struct ins_ops lock_ops = {
234 .free = lock__delete,
235 .parse = lock__parse,
236 .scnprintf = lock__scnprintf,
237 };
238
239 static int mov__parse(struct ins_operands *ops)
240 {
241 char *s = strchr(ops->raw, ','), *target, *comment, prev;
242
243 if (s == NULL)
244 return -1;
245
246 *s = '\0';
247 ops->source.raw = strdup(ops->raw);
248 *s = ',';
249
250 if (ops->source.raw == NULL)
251 return -1;
252
253 target = ++s;
254 #ifdef __arm__
255 comment = strchr(s, ';');
256 #else
257 comment = strchr(s, '#');
258 #endif
259
260 if (comment != NULL)
261 s = comment - 1;
262 else
263 s = strchr(s, '\0') - 1;
264
265 while (s > target && isspace(s[0]))
266 --s;
267 s++;
268 prev = *s;
269 *s = '\0';
270
271 ops->target.raw = strdup(target);
272 *s = prev;
273
274 if (ops->target.raw == NULL)
275 goto out_free_source;
276
277 if (comment == NULL)
278 return 0;
279
280 while (comment[0] != '\0' && isspace(comment[0]))
281 ++comment;
282
283 comment__symbol(ops->source.raw, comment, &ops->source.addr, &ops->source.name);
284 comment__symbol(ops->target.raw, comment, &ops->target.addr, &ops->target.name);
285
286 return 0;
287
288 out_free_source:
289 zfree(&ops->source.raw);
290 return -1;
291 }
292
293 static int mov__scnprintf(struct ins *ins, char *bf, size_t size,
294 struct ins_operands *ops)
295 {
296 return scnprintf(bf, size, "%-6.6s %s,%s", ins->name,
297 ops->source.name ?: ops->source.raw,
298 ops->target.name ?: ops->target.raw);
299 }
300
301 static struct ins_ops mov_ops = {
302 .parse = mov__parse,
303 .scnprintf = mov__scnprintf,
304 };
305
306 static int dec__parse(struct ins_operands *ops)
307 {
308 char *target, *comment, *s, prev;
309
310 target = s = ops->raw;
311
312 while (s[0] != '\0' && !isspace(s[0]))
313 ++s;
314 prev = *s;
315 *s = '\0';
316
317 ops->target.raw = strdup(target);
318 *s = prev;
319
320 if (ops->target.raw == NULL)
321 return -1;
322
323 comment = strchr(s, '#');
324 if (comment == NULL)
325 return 0;
326
327 while (comment[0] != '\0' && isspace(comment[0]))
328 ++comment;
329
330 comment__symbol(ops->target.raw, comment, &ops->target.addr, &ops->target.name);
331
332 return 0;
333 }
334
335 static int dec__scnprintf(struct ins *ins, char *bf, size_t size,
336 struct ins_operands *ops)
337 {
338 return scnprintf(bf, size, "%-6.6s %s", ins->name,
339 ops->target.name ?: ops->target.raw);
340 }
341
342 static struct ins_ops dec_ops = {
343 .parse = dec__parse,
344 .scnprintf = dec__scnprintf,
345 };
346
347 static int nop__scnprintf(struct ins *ins __maybe_unused, char *bf, size_t size,
348 struct ins_operands *ops __maybe_unused)
349 {
350 return scnprintf(bf, size, "%-6.6s", "nop");
351 }
352
353 static struct ins_ops nop_ops = {
354 .scnprintf = nop__scnprintf,
355 };
356
357 static struct ins instructions[] = {
358 { .name = "add", .ops = &mov_ops, },
359 { .name = "addl", .ops = &mov_ops, },
360 { .name = "addq", .ops = &mov_ops, },
361 { .name = "addw", .ops = &mov_ops, },
362 { .name = "and", .ops = &mov_ops, },
363 #ifdef __arm__
364 { .name = "b", .ops = &jump_ops, }, // might also be a call
365 { .name = "bcc", .ops = &jump_ops, },
366 { .name = "bcs", .ops = &jump_ops, },
367 { .name = "beq", .ops = &jump_ops, },
368 { .name = "bge", .ops = &jump_ops, },
369 { .name = "bgt", .ops = &jump_ops, },
370 { .name = "bhi", .ops = &jump_ops, },
371 { .name = "bl", .ops = &call_ops, },
372 { .name = "bls", .ops = &jump_ops, },
373 { .name = "blt", .ops = &jump_ops, },
374 { .name = "blx", .ops = &call_ops, },
375 { .name = "bne", .ops = &jump_ops, },
376 #endif
377 { .name = "bts", .ops = &mov_ops, },
378 { .name = "call", .ops = &call_ops, },
379 { .name = "callq", .ops = &call_ops, },
380 { .name = "cmp", .ops = &mov_ops, },
381 { .name = "cmpb", .ops = &mov_ops, },
382 { .name = "cmpl", .ops = &mov_ops, },
383 { .name = "cmpq", .ops = &mov_ops, },
384 { .name = "cmpw", .ops = &mov_ops, },
385 { .name = "cmpxch", .ops = &mov_ops, },
386 { .name = "dec", .ops = &dec_ops, },
387 { .name = "decl", .ops = &dec_ops, },
388 { .name = "imul", .ops = &mov_ops, },
389 { .name = "inc", .ops = &dec_ops, },
390 { .name = "incl", .ops = &dec_ops, },
391 { .name = "ja", .ops = &jump_ops, },
392 { .name = "jae", .ops = &jump_ops, },
393 { .name = "jb", .ops = &jump_ops, },
394 { .name = "jbe", .ops = &jump_ops, },
395 { .name = "jc", .ops = &jump_ops, },
396 { .name = "jcxz", .ops = &jump_ops, },
397 { .name = "je", .ops = &jump_ops, },
398 { .name = "jecxz", .ops = &jump_ops, },
399 { .name = "jg", .ops = &jump_ops, },
400 { .name = "jge", .ops = &jump_ops, },
401 { .name = "jl", .ops = &jump_ops, },
402 { .name = "jle", .ops = &jump_ops, },
403 { .name = "jmp", .ops = &jump_ops, },
404 { .name = "jmpq", .ops = &jump_ops, },
405 { .name = "jna", .ops = &jump_ops, },
406 { .name = "jnae", .ops = &jump_ops, },
407 { .name = "jnb", .ops = &jump_ops, },
408 { .name = "jnbe", .ops = &jump_ops, },
409 { .name = "jnc", .ops = &jump_ops, },
410 { .name = "jne", .ops = &jump_ops, },
411 { .name = "jng", .ops = &jump_ops, },
412 { .name = "jnge", .ops = &jump_ops, },
413 { .name = "jnl", .ops = &jump_ops, },
414 { .name = "jnle", .ops = &jump_ops, },
415 { .name = "jno", .ops = &jump_ops, },
416 { .name = "jnp", .ops = &jump_ops, },
417 { .name = "jns", .ops = &jump_ops, },
418 { .name = "jnz", .ops = &jump_ops, },
419 { .name = "jo", .ops = &jump_ops, },
420 { .name = "jp", .ops = &jump_ops, },
421 { .name = "jpe", .ops = &jump_ops, },
422 { .name = "jpo", .ops = &jump_ops, },
423 { .name = "jrcxz", .ops = &jump_ops, },
424 { .name = "js", .ops = &jump_ops, },
425 { .name = "jz", .ops = &jump_ops, },
426 { .name = "lea", .ops = &mov_ops, },
427 { .name = "lock", .ops = &lock_ops, },
428 { .name = "mov", .ops = &mov_ops, },
429 { .name = "movb", .ops = &mov_ops, },
430 { .name = "movdqa",.ops = &mov_ops, },
431 { .name = "movl", .ops = &mov_ops, },
432 { .name = "movq", .ops = &mov_ops, },
433 { .name = "movslq", .ops = &mov_ops, },
434 { .name = "movzbl", .ops = &mov_ops, },
435 { .name = "movzwl", .ops = &mov_ops, },
436 { .name = "nop", .ops = &nop_ops, },
437 { .name = "nopl", .ops = &nop_ops, },
438 { .name = "nopw", .ops = &nop_ops, },
439 { .name = "or", .ops = &mov_ops, },
440 { .name = "orl", .ops = &mov_ops, },
441 { .name = "test", .ops = &mov_ops, },
442 { .name = "testb", .ops = &mov_ops, },
443 { .name = "testl", .ops = &mov_ops, },
444 { .name = "xadd", .ops = &mov_ops, },
445 { .name = "xbeginl", .ops = &jump_ops, },
446 { .name = "xbeginq", .ops = &jump_ops, },
447 };
448
449 static int ins__key_cmp(const void *name, const void *insp)
450 {
451 const struct ins *ins = insp;
452
453 return strcmp(name, ins->name);
454 }
455
456 static int ins__cmp(const void *a, const void *b)
457 {
458 const struct ins *ia = a;
459 const struct ins *ib = b;
460
461 return strcmp(ia->name, ib->name);
462 }
463
464 static void ins__sort(void)
465 {
466 const int nmemb = ARRAY_SIZE(instructions);
467
468 qsort(instructions, nmemb, sizeof(struct ins), ins__cmp);
469 }
470
471 static struct ins *ins__find(const char *name)
472 {
473 const int nmemb = ARRAY_SIZE(instructions);
474 static bool sorted;
475
476 if (!sorted) {
477 ins__sort();
478 sorted = true;
479 }
480
481 return bsearch(name, instructions, nmemb, sizeof(struct ins), ins__key_cmp);
482 }
483
484 int symbol__annotate_init(struct map *map __maybe_unused, struct symbol *sym)
485 {
486 struct annotation *notes = symbol__annotation(sym);
487 pthread_mutex_init(&notes->lock, NULL);
488 return 0;
489 }
490
491 int symbol__alloc_hist(struct symbol *sym)
492 {
493 struct annotation *notes = symbol__annotation(sym);
494 const size_t size = symbol__size(sym);
495 size_t sizeof_sym_hist;
496
497 /* Check for overflow when calculating sizeof_sym_hist */
498 if (size > (SIZE_MAX - sizeof(struct sym_hist)) / sizeof(u64))
499 return -1;
500
501 sizeof_sym_hist = (sizeof(struct sym_hist) + size * sizeof(u64));
502
503 /* Check for overflow in zalloc argument */
504 if (sizeof_sym_hist > (SIZE_MAX - sizeof(*notes->src))
505 / symbol_conf.nr_events)
506 return -1;
507
508 notes->src = zalloc(sizeof(*notes->src) + symbol_conf.nr_events * sizeof_sym_hist);
509 if (notes->src == NULL)
510 return -1;
511 notes->src->sizeof_sym_hist = sizeof_sym_hist;
512 notes->src->nr_histograms = symbol_conf.nr_events;
513 INIT_LIST_HEAD(&notes->src->source);
514 return 0;
515 }
516
517 /* The cycles histogram is lazily allocated. */
518 static int symbol__alloc_hist_cycles(struct symbol *sym)
519 {
520 struct annotation *notes = symbol__annotation(sym);
521 const size_t size = symbol__size(sym);
522
523 notes->src->cycles_hist = calloc(size, sizeof(struct cyc_hist));
524 if (notes->src->cycles_hist == NULL)
525 return -1;
526 return 0;
527 }
528
529 void symbol__annotate_zero_histograms(struct symbol *sym)
530 {
531 struct annotation *notes = symbol__annotation(sym);
532
533 pthread_mutex_lock(&notes->lock);
534 if (notes->src != NULL) {
535 memset(notes->src->histograms, 0,
536 notes->src->nr_histograms * notes->src->sizeof_sym_hist);
537 if (notes->src->cycles_hist)
538 memset(notes->src->cycles_hist, 0,
539 symbol__size(sym) * sizeof(struct cyc_hist));
540 }
541 pthread_mutex_unlock(&notes->lock);
542 }
543
544 static int __symbol__account_cycles(struct annotation *notes,
545 u64 start,
546 unsigned offset, unsigned cycles,
547 unsigned have_start)
548 {
549 struct cyc_hist *ch;
550
551 ch = notes->src->cycles_hist;
552 /*
553 * For now we can only account one basic block per
554 * final jump. But multiple could be overlapping.
555 * Always account the longest one. So when
556 * a shorter one has been already seen throw it away.
557 *
558 * We separately always account the full cycles.
559 */
560 ch[offset].num_aggr++;
561 ch[offset].cycles_aggr += cycles;
562
563 if (!have_start && ch[offset].have_start)
564 return 0;
565 if (ch[offset].num) {
566 if (have_start && (!ch[offset].have_start ||
567 ch[offset].start > start)) {
568 ch[offset].have_start = 0;
569 ch[offset].cycles = 0;
570 ch[offset].num = 0;
571 if (ch[offset].reset < 0xffff)
572 ch[offset].reset++;
573 } else if (have_start &&
574 ch[offset].start < start)
575 return 0;
576 }
577 ch[offset].have_start = have_start;
578 ch[offset].start = start;
579 ch[offset].cycles += cycles;
580 ch[offset].num++;
581 return 0;
582 }
583
584 static int __symbol__inc_addr_samples(struct symbol *sym, struct map *map,
585 struct annotation *notes, int evidx, u64 addr)
586 {
587 unsigned offset;
588 struct sym_hist *h;
589
590 pr_debug3("%s: addr=%#" PRIx64 "\n", __func__, map->unmap_ip(map, addr));
591
592 if (addr < sym->start || addr >= sym->end) {
593 pr_debug("%s(%d): ERANGE! sym->name=%s, start=%#" PRIx64 ", addr=%#" PRIx64 ", end=%#" PRIx64 "\n",
594 __func__, __LINE__, sym->name, sym->start, addr, sym->end);
595 return -ERANGE;
596 }
597
598 offset = addr - sym->start;
599 h = annotation__histogram(notes, evidx);
600 h->sum++;
601 h->addr[offset]++;
602
603 pr_debug3("%#" PRIx64 " %s: period++ [addr: %#" PRIx64 ", %#" PRIx64
604 ", evidx=%d] => %" PRIu64 "\n", sym->start, sym->name,
605 addr, addr - sym->start, evidx, h->addr[offset]);
606 return 0;
607 }
608
609 static struct annotation *symbol__get_annotation(struct symbol *sym, bool cycles)
610 {
611 struct annotation *notes = symbol__annotation(sym);
612
613 if (notes->src == NULL) {
614 if (symbol__alloc_hist(sym) < 0)
615 return NULL;
616 }
617 if (!notes->src->cycles_hist && cycles) {
618 if (symbol__alloc_hist_cycles(sym) < 0)
619 return NULL;
620 }
621 return notes;
622 }
623
624 static int symbol__inc_addr_samples(struct symbol *sym, struct map *map,
625 int evidx, u64 addr)
626 {
627 struct annotation *notes;
628
629 if (sym == NULL)
630 return 0;
631 notes = symbol__get_annotation(sym, false);
632 if (notes == NULL)
633 return -ENOMEM;
634 return __symbol__inc_addr_samples(sym, map, notes, evidx, addr);
635 }
636
637 static int symbol__account_cycles(u64 addr, u64 start,
638 struct symbol *sym, unsigned cycles)
639 {
640 struct annotation *notes;
641 unsigned offset;
642
643 if (sym == NULL)
644 return 0;
645 notes = symbol__get_annotation(sym, true);
646 if (notes == NULL)
647 return -ENOMEM;
648 if (addr < sym->start || addr >= sym->end)
649 return -ERANGE;
650
651 if (start) {
652 if (start < sym->start || start >= sym->end)
653 return -ERANGE;
654 if (start >= addr)
655 start = 0;
656 }
657 offset = addr - sym->start;
658 return __symbol__account_cycles(notes,
659 start ? start - sym->start : 0,
660 offset, cycles,
661 !!start);
662 }
663
664 int addr_map_symbol__account_cycles(struct addr_map_symbol *ams,
665 struct addr_map_symbol *start,
666 unsigned cycles)
667 {
668 u64 saddr = 0;
669 int err;
670
671 if (!cycles)
672 return 0;
673
674 /*
675 * Only set start when IPC can be computed. We can only
676 * compute it when the basic block is completely in a single
677 * function.
678 * Special case the case when the jump is elsewhere, but
679 * it starts on the function start.
680 */
681 if (start &&
682 (start->sym == ams->sym ||
683 (ams->sym &&
684 start->addr == ams->sym->start + ams->map->start)))
685 saddr = start->al_addr;
686 if (saddr == 0)
687 pr_debug2("BB with bad start: addr %"PRIx64" start %"PRIx64" sym %"PRIx64" saddr %"PRIx64"\n",
688 ams->addr,
689 start ? start->addr : 0,
690 ams->sym ? ams->sym->start + ams->map->start : 0,
691 saddr);
692 err = symbol__account_cycles(ams->al_addr, saddr, ams->sym, cycles);
693 if (err)
694 pr_debug2("account_cycles failed %d\n", err);
695 return err;
696 }
697
698 int addr_map_symbol__inc_samples(struct addr_map_symbol *ams, int evidx)
699 {
700 return symbol__inc_addr_samples(ams->sym, ams->map, evidx, ams->al_addr);
701 }
702
703 int hist_entry__inc_addr_samples(struct hist_entry *he, int evidx, u64 ip)
704 {
705 return symbol__inc_addr_samples(he->ms.sym, he->ms.map, evidx, ip);
706 }
707
708 static void disasm_line__init_ins(struct disasm_line *dl)
709 {
710 dl->ins = ins__find(dl->name);
711
712 if (dl->ins == NULL)
713 return;
714
715 if (!dl->ins->ops)
716 return;
717
718 if (dl->ins->ops->parse && dl->ins->ops->parse(&dl->ops) < 0)
719 dl->ins = NULL;
720 }
721
722 static int disasm_line__parse(char *line, char **namep, char **rawp)
723 {
724 char *name = line, tmp;
725
726 while (isspace(name[0]))
727 ++name;
728
729 if (name[0] == '\0')
730 return -1;
731
732 *rawp = name + 1;
733
734 while ((*rawp)[0] != '\0' && !isspace((*rawp)[0]))
735 ++*rawp;
736
737 tmp = (*rawp)[0];
738 (*rawp)[0] = '\0';
739 *namep = strdup(name);
740
741 if (*namep == NULL)
742 goto out_free_name;
743
744 (*rawp)[0] = tmp;
745
746 if ((*rawp)[0] != '\0') {
747 (*rawp)++;
748 while (isspace((*rawp)[0]))
749 ++(*rawp);
750 }
751
752 return 0;
753
754 out_free_name:
755 zfree(namep);
756 return -1;
757 }
758
759 static struct disasm_line *disasm_line__new(s64 offset, char *line,
760 size_t privsize, int line_nr)
761 {
762 struct disasm_line *dl = zalloc(sizeof(*dl) + privsize);
763
764 if (dl != NULL) {
765 dl->offset = offset;
766 dl->line = strdup(line);
767 dl->line_nr = line_nr;
768 if (dl->line == NULL)
769 goto out_delete;
770
771 if (offset != -1) {
772 if (disasm_line__parse(dl->line, &dl->name, &dl->ops.raw) < 0)
773 goto out_free_line;
774
775 disasm_line__init_ins(dl);
776 }
777 }
778
779 return dl;
780
781 out_free_line:
782 zfree(&dl->line);
783 out_delete:
784 free(dl);
785 return NULL;
786 }
787
788 void disasm_line__free(struct disasm_line *dl)
789 {
790 zfree(&dl->line);
791 zfree(&dl->name);
792 if (dl->ins && dl->ins->ops->free)
793 dl->ins->ops->free(&dl->ops);
794 else
795 ins__delete(&dl->ops);
796 free(dl);
797 }
798
799 int disasm_line__scnprintf(struct disasm_line *dl, char *bf, size_t size, bool raw)
800 {
801 if (raw || !dl->ins)
802 return scnprintf(bf, size, "%-6.6s %s", dl->name, dl->ops.raw);
803
804 return ins__scnprintf(dl->ins, bf, size, &dl->ops);
805 }
806
807 static void disasm__add(struct list_head *head, struct disasm_line *line)
808 {
809 list_add_tail(&line->node, head);
810 }
811
812 struct disasm_line *disasm__get_next_ip_line(struct list_head *head, struct disasm_line *pos)
813 {
814 list_for_each_entry_continue(pos, head, node)
815 if (pos->offset >= 0)
816 return pos;
817
818 return NULL;
819 }
820
821 double disasm__calc_percent(struct annotation *notes, int evidx, s64 offset,
822 s64 end, const char **path, u64 *nr_samples)
823 {
824 struct source_line *src_line = notes->src->lines;
825 double percent = 0.0;
826 *nr_samples = 0;
827
828 if (src_line) {
829 size_t sizeof_src_line = sizeof(*src_line) +
830 sizeof(src_line->samples) * (src_line->nr_pcnt - 1);
831
832 while (offset < end) {
833 src_line = (void *)notes->src->lines +
834 (sizeof_src_line * offset);
835
836 if (*path == NULL)
837 *path = src_line->path;
838
839 percent += src_line->samples[evidx].percent;
840 *nr_samples += src_line->samples[evidx].nr;
841 offset++;
842 }
843 } else {
844 struct sym_hist *h = annotation__histogram(notes, evidx);
845 unsigned int hits = 0;
846
847 while (offset < end)
848 hits += h->addr[offset++];
849
850 if (h->sum) {
851 *nr_samples = hits;
852 percent = 100.0 * hits / h->sum;
853 }
854 }
855
856 return percent;
857 }
858
859 static int disasm_line__print(struct disasm_line *dl, struct symbol *sym, u64 start,
860 struct perf_evsel *evsel, u64 len, int min_pcnt, int printed,
861 int max_lines, struct disasm_line *queue)
862 {
863 static const char *prev_line;
864 static const char *prev_color;
865
866 if (dl->offset != -1) {
867 const char *path = NULL;
868 u64 nr_samples;
869 double percent, max_percent = 0.0;
870 double *ppercents = &percent;
871 u64 *psamples = &nr_samples;
872 int i, nr_percent = 1;
873 const char *color;
874 struct annotation *notes = symbol__annotation(sym);
875 s64 offset = dl->offset;
876 const u64 addr = start + offset;
877 struct disasm_line *next;
878
879 next = disasm__get_next_ip_line(&notes->src->source, dl);
880
881 if (perf_evsel__is_group_event(evsel)) {
882 nr_percent = evsel->nr_members;
883 ppercents = calloc(nr_percent, sizeof(double));
884 psamples = calloc(nr_percent, sizeof(u64));
885 if (ppercents == NULL || psamples == NULL) {
886 return -1;
887 }
888 }
889
890 for (i = 0; i < nr_percent; i++) {
891 percent = disasm__calc_percent(notes,
892 notes->src->lines ? i : evsel->idx + i,
893 offset,
894 next ? next->offset : (s64) len,
895 &path, &nr_samples);
896
897 ppercents[i] = percent;
898 psamples[i] = nr_samples;
899 if (percent > max_percent)
900 max_percent = percent;
901 }
902
903 if (max_percent < min_pcnt)
904 return -1;
905
906 if (max_lines && printed >= max_lines)
907 return 1;
908
909 if (queue != NULL) {
910 list_for_each_entry_from(queue, &notes->src->source, node) {
911 if (queue == dl)
912 break;
913 disasm_line__print(queue, sym, start, evsel, len,
914 0, 0, 1, NULL);
915 }
916 }
917
918 color = get_percent_color(max_percent);
919
920 /*
921 * Also color the filename and line if needed, with
922 * the same color than the percentage. Don't print it
923 * twice for close colored addr with the same filename:line
924 */
925 if (path) {
926 if (!prev_line || strcmp(prev_line, path)
927 || color != prev_color) {
928 color_fprintf(stdout, color, " %s", path);
929 prev_line = path;
930 prev_color = color;
931 }
932 }
933
934 for (i = 0; i < nr_percent; i++) {
935 percent = ppercents[i];
936 nr_samples = psamples[i];
937 color = get_percent_color(percent);
938
939 if (symbol_conf.show_total_period)
940 color_fprintf(stdout, color, " %7" PRIu64,
941 nr_samples);
942 else
943 color_fprintf(stdout, color, " %7.2f", percent);
944 }
945
946 printf(" : ");
947 color_fprintf(stdout, PERF_COLOR_MAGENTA, " %" PRIx64 ":", addr);
948 color_fprintf(stdout, PERF_COLOR_BLUE, "%s\n", dl->line);
949
950 if (ppercents != &percent)
951 free(ppercents);
952
953 if (psamples != &nr_samples)
954 free(psamples);
955
956 } else if (max_lines && printed >= max_lines)
957 return 1;
958 else {
959 int width = 8;
960
961 if (queue)
962 return -1;
963
964 if (perf_evsel__is_group_event(evsel))
965 width *= evsel->nr_members;
966
967 if (!*dl->line)
968 printf(" %*s:\n", width, " ");
969 else
970 printf(" %*s: %s\n", width, " ", dl->line);
971 }
972
973 return 0;
974 }
975
976 /*
977 * symbol__parse_objdump_line() parses objdump output (with -d --no-show-raw)
978 * which looks like following
979 *
980 * 0000000000415500 <_init>:
981 * 415500: sub $0x8,%rsp
982 * 415504: mov 0x2f5ad5(%rip),%rax # 70afe0 <_DYNAMIC+0x2f8>
983 * 41550b: test %rax,%rax
984 * 41550e: je 415515 <_init+0x15>
985 * 415510: callq 416e70 <__gmon_start__@plt>
986 * 415515: add $0x8,%rsp
987 * 415519: retq
988 *
989 * it will be parsed and saved into struct disasm_line as
990 * <offset> <name> <ops.raw>
991 *
992 * The offset will be a relative offset from the start of the symbol and -1
993 * means that it's not a disassembly line so should be treated differently.
994 * The ops.raw part will be parsed further according to type of the instruction.
995 */
996 static int symbol__parse_objdump_line(struct symbol *sym, struct map *map,
997 FILE *file, size_t privsize,
998 int *line_nr)
999 {
1000 struct annotation *notes = symbol__annotation(sym);
1001 struct disasm_line *dl;
1002 char *line = NULL, *parsed_line, *tmp, *tmp2, *c;
1003 size_t line_len;
1004 s64 line_ip, offset = -1;
1005 regmatch_t match[2];
1006
1007 if (getline(&line, &line_len, file) < 0)
1008 return -1;
1009
1010 if (!line)
1011 return -1;
1012
1013 while (line_len != 0 && isspace(line[line_len - 1]))
1014 line[--line_len] = '\0';
1015
1016 c = strchr(line, '\n');
1017 if (c)
1018 *c = 0;
1019
1020 line_ip = -1;
1021 parsed_line = line;
1022
1023 /* /filename:linenr ? Save line number and ignore. */
1024 if (regexec(&file_lineno, line, 2, match, 0) == 0) {
1025 *line_nr = atoi(line + match[1].rm_so);
1026 return 0;
1027 }
1028
1029 /*
1030 * Strip leading spaces:
1031 */
1032 tmp = line;
1033 while (*tmp) {
1034 if (*tmp != ' ')
1035 break;
1036 tmp++;
1037 }
1038
1039 if (*tmp) {
1040 /*
1041 * Parse hexa addresses followed by ':'
1042 */
1043 line_ip = strtoull(tmp, &tmp2, 16);
1044 if (*tmp2 != ':' || tmp == tmp2 || tmp2[1] == '\0')
1045 line_ip = -1;
1046 }
1047
1048 if (line_ip != -1) {
1049 u64 start = map__rip_2objdump(map, sym->start),
1050 end = map__rip_2objdump(map, sym->end);
1051
1052 offset = line_ip - start;
1053 if ((u64)line_ip < start || (u64)line_ip >= end)
1054 offset = -1;
1055 else
1056 parsed_line = tmp2 + 1;
1057 }
1058
1059 dl = disasm_line__new(offset, parsed_line, privsize, *line_nr);
1060 free(line);
1061 (*line_nr)++;
1062
1063 if (dl == NULL)
1064 return -1;
1065
1066 if (dl->ops.target.offset == UINT64_MAX)
1067 dl->ops.target.offset = dl->ops.target.addr -
1068 map__rip_2objdump(map, sym->start);
1069
1070 /* kcore has no symbols, so add the call target name */
1071 if (dl->ins && ins__is_call(dl->ins) && !dl->ops.target.name) {
1072 struct addr_map_symbol target = {
1073 .map = map,
1074 .addr = dl->ops.target.addr,
1075 };
1076
1077 if (!map_groups__find_ams(&target, NULL) &&
1078 target.sym->start == target.al_addr)
1079 dl->ops.target.name = strdup(target.sym->name);
1080 }
1081
1082 disasm__add(&notes->src->source, dl);
1083
1084 return 0;
1085 }
1086
1087 static __attribute__((constructor)) void symbol__init_regexpr(void)
1088 {
1089 regcomp(&file_lineno, "^/[^:]+:([0-9]+)", REG_EXTENDED);
1090 }
1091
1092 static void delete_last_nop(struct symbol *sym)
1093 {
1094 struct annotation *notes = symbol__annotation(sym);
1095 struct list_head *list = &notes->src->source;
1096 struct disasm_line *dl;
1097
1098 while (!list_empty(list)) {
1099 dl = list_entry(list->prev, struct disasm_line, node);
1100
1101 if (dl->ins && dl->ins->ops) {
1102 if (dl->ins->ops != &nop_ops)
1103 return;
1104 } else {
1105 if (!strstr(dl->line, " nop ") &&
1106 !strstr(dl->line, " nopl ") &&
1107 !strstr(dl->line, " nopw "))
1108 return;
1109 }
1110
1111 list_del(&dl->node);
1112 disasm_line__free(dl);
1113 }
1114 }
1115
1116 int symbol__annotate(struct symbol *sym, struct map *map, size_t privsize)
1117 {
1118 struct dso *dso = map->dso;
1119 char *filename = dso__build_id_filename(dso, NULL, 0);
1120 bool free_filename = true;
1121 char command[PATH_MAX * 2];
1122 FILE *file;
1123 int err = 0;
1124 char symfs_filename[PATH_MAX];
1125 struct kcore_extract kce;
1126 bool delete_extract = false;
1127 int lineno = 0;
1128 int nline;
1129
1130 if (filename)
1131 symbol__join_symfs(symfs_filename, filename);
1132
1133 if (filename == NULL) {
1134 if (dso->has_build_id) {
1135 pr_err("Can't annotate %s: not enough memory\n",
1136 sym->name);
1137 return -ENOMEM;
1138 }
1139 goto fallback;
1140 } else if (dso__is_kcore(dso)) {
1141 goto fallback;
1142 } else if (readlink(symfs_filename, command, sizeof(command)) < 0 ||
1143 strstr(command, DSO__NAME_KALLSYMS) ||
1144 access(symfs_filename, R_OK)) {
1145 free(filename);
1146 fallback:
1147 /*
1148 * If we don't have build-ids or the build-id file isn't in the
1149 * cache, or is just a kallsyms file, well, lets hope that this
1150 * DSO is the same as when 'perf record' ran.
1151 */
1152 filename = (char *)dso->long_name;
1153 symbol__join_symfs(symfs_filename, filename);
1154 free_filename = false;
1155 }
1156
1157 if (dso->symtab_type == DSO_BINARY_TYPE__KALLSYMS &&
1158 !dso__is_kcore(dso)) {
1159 char bf[SBUILD_ID_SIZE + 15] = " with build id ";
1160 char *build_id_msg = NULL;
1161
1162 if (dso->annotate_warned)
1163 goto out_free_filename;
1164
1165 if (dso->has_build_id) {
1166 build_id__sprintf(dso->build_id,
1167 sizeof(dso->build_id), bf + 15);
1168 build_id_msg = bf;
1169 }
1170 err = -ENOENT;
1171 dso->annotate_warned = 1;
1172 pr_err("Can't annotate %s:\n\n"
1173 "No vmlinux file%s\nwas found in the path.\n\n"
1174 "Note that annotation using /proc/kcore requires CAP_SYS_RAWIO capability.\n\n"
1175 "Please use:\n\n"
1176 " perf buildid-cache -vu vmlinux\n\n"
1177 "or:\n\n"
1178 " --vmlinux vmlinux\n",
1179 sym->name, build_id_msg ?: "");
1180 goto out_free_filename;
1181 }
1182
1183 pr_debug("%s: filename=%s, sym=%s, start=%#" PRIx64 ", end=%#" PRIx64 "\n", __func__,
1184 filename, sym->name, map->unmap_ip(map, sym->start),
1185 map->unmap_ip(map, sym->end));
1186
1187 pr_debug("annotating [%p] %30s : [%p] %30s\n",
1188 dso, dso->long_name, sym, sym->name);
1189
1190 if (dso__is_kcore(dso)) {
1191 kce.kcore_filename = symfs_filename;
1192 kce.addr = map__rip_2objdump(map, sym->start);
1193 kce.offs = sym->start;
1194 kce.len = sym->end - sym->start;
1195 if (!kcore_extract__create(&kce)) {
1196 delete_extract = true;
1197 strlcpy(symfs_filename, kce.extract_filename,
1198 sizeof(symfs_filename));
1199 if (free_filename) {
1200 free(filename);
1201 free_filename = false;
1202 }
1203 filename = symfs_filename;
1204 }
1205 } else if (dso__needs_decompress(dso)) {
1206 char tmp[PATH_MAX];
1207 struct kmod_path m;
1208 int fd;
1209 bool ret;
1210
1211 if (kmod_path__parse_ext(&m, symfs_filename))
1212 goto out_free_filename;
1213
1214 snprintf(tmp, PATH_MAX, "/tmp/perf-kmod-XXXXXX");
1215
1216 fd = mkstemp(tmp);
1217 if (fd < 0) {
1218 free(m.ext);
1219 goto out_free_filename;
1220 }
1221
1222 ret = decompress_to_file(m.ext, symfs_filename, fd);
1223
1224 if (ret)
1225 pr_err("Cannot decompress %s %s\n", m.ext, symfs_filename);
1226
1227 free(m.ext);
1228 close(fd);
1229
1230 if (!ret)
1231 goto out_free_filename;
1232
1233 strcpy(symfs_filename, tmp);
1234 }
1235
1236 snprintf(command, sizeof(command),
1237 "%s %s%s --start-address=0x%016" PRIx64
1238 " --stop-address=0x%016" PRIx64
1239 " -l -d %s %s -C %s 2>/dev/null|grep -v %s|expand",
1240 objdump_path ? objdump_path : "objdump",
1241 disassembler_style ? "-M " : "",
1242 disassembler_style ? disassembler_style : "",
1243 map__rip_2objdump(map, sym->start),
1244 map__rip_2objdump(map, sym->end),
1245 symbol_conf.annotate_asm_raw ? "" : "--no-show-raw",
1246 symbol_conf.annotate_src ? "-S" : "",
1247 symfs_filename, filename);
1248
1249 pr_debug("Executing: %s\n", command);
1250
1251 file = popen(command, "r");
1252 if (!file) {
1253 pr_err("Failure running %s\n", command);
1254 /*
1255 * If we were using debug info should retry with
1256 * original binary.
1257 */
1258 goto out_remove_tmp;
1259 }
1260
1261 nline = 0;
1262 while (!feof(file)) {
1263 if (symbol__parse_objdump_line(sym, map, file, privsize,
1264 &lineno) < 0)
1265 break;
1266 nline++;
1267 }
1268
1269 if (nline == 0)
1270 pr_err("No output from %s\n", command);
1271
1272 /*
1273 * kallsyms does not have symbol sizes so there may a nop at the end.
1274 * Remove it.
1275 */
1276 if (dso__is_kcore(dso))
1277 delete_last_nop(sym);
1278
1279 pclose(file);
1280
1281 out_remove_tmp:
1282 if (dso__needs_decompress(dso))
1283 unlink(symfs_filename);
1284 out_free_filename:
1285 if (delete_extract)
1286 kcore_extract__delete(&kce);
1287 if (free_filename)
1288 free(filename);
1289 return err;
1290 }
1291
1292 static void insert_source_line(struct rb_root *root, struct source_line *src_line)
1293 {
1294 struct source_line *iter;
1295 struct rb_node **p = &root->rb_node;
1296 struct rb_node *parent = NULL;
1297 int i, ret;
1298
1299 while (*p != NULL) {
1300 parent = *p;
1301 iter = rb_entry(parent, struct source_line, node);
1302
1303 ret = strcmp(iter->path, src_line->path);
1304 if (ret == 0) {
1305 for (i = 0; i < src_line->nr_pcnt; i++)
1306 iter->samples[i].percent_sum += src_line->samples[i].percent;
1307 return;
1308 }
1309
1310 if (ret < 0)
1311 p = &(*p)->rb_left;
1312 else
1313 p = &(*p)->rb_right;
1314 }
1315
1316 for (i = 0; i < src_line->nr_pcnt; i++)
1317 src_line->samples[i].percent_sum = src_line->samples[i].percent;
1318
1319 rb_link_node(&src_line->node, parent, p);
1320 rb_insert_color(&src_line->node, root);
1321 }
1322
1323 static int cmp_source_line(struct source_line *a, struct source_line *b)
1324 {
1325 int i;
1326
1327 for (i = 0; i < a->nr_pcnt; i++) {
1328 if (a->samples[i].percent_sum == b->samples[i].percent_sum)
1329 continue;
1330 return a->samples[i].percent_sum > b->samples[i].percent_sum;
1331 }
1332
1333 return 0;
1334 }
1335
1336 static void __resort_source_line(struct rb_root *root, struct source_line *src_line)
1337 {
1338 struct source_line *iter;
1339 struct rb_node **p = &root->rb_node;
1340 struct rb_node *parent = NULL;
1341
1342 while (*p != NULL) {
1343 parent = *p;
1344 iter = rb_entry(parent, struct source_line, node);
1345
1346 if (cmp_source_line(src_line, iter))
1347 p = &(*p)->rb_left;
1348 else
1349 p = &(*p)->rb_right;
1350 }
1351
1352 rb_link_node(&src_line->node, parent, p);
1353 rb_insert_color(&src_line->node, root);
1354 }
1355
1356 static void resort_source_line(struct rb_root *dest_root, struct rb_root *src_root)
1357 {
1358 struct source_line *src_line;
1359 struct rb_node *node;
1360
1361 node = rb_first(src_root);
1362 while (node) {
1363 struct rb_node *next;
1364
1365 src_line = rb_entry(node, struct source_line, node);
1366 next = rb_next(node);
1367 rb_erase(node, src_root);
1368
1369 __resort_source_line(dest_root, src_line);
1370 node = next;
1371 }
1372 }
1373
1374 static void symbol__free_source_line(struct symbol *sym, int len)
1375 {
1376 struct annotation *notes = symbol__annotation(sym);
1377 struct source_line *src_line = notes->src->lines;
1378 size_t sizeof_src_line;
1379 int i;
1380
1381 sizeof_src_line = sizeof(*src_line) +
1382 (sizeof(src_line->samples) * (src_line->nr_pcnt - 1));
1383
1384 for (i = 0; i < len; i++) {
1385 free_srcline(src_line->path);
1386 src_line = (void *)src_line + sizeof_src_line;
1387 }
1388
1389 zfree(&notes->src->lines);
1390 }
1391
1392 /* Get the filename:line for the colored entries */
1393 static int symbol__get_source_line(struct symbol *sym, struct map *map,
1394 struct perf_evsel *evsel,
1395 struct rb_root *root, int len)
1396 {
1397 u64 start;
1398 int i, k;
1399 int evidx = evsel->idx;
1400 struct source_line *src_line;
1401 struct annotation *notes = symbol__annotation(sym);
1402 struct sym_hist *h = annotation__histogram(notes, evidx);
1403 struct rb_root tmp_root = RB_ROOT;
1404 int nr_pcnt = 1;
1405 u64 h_sum = h->sum;
1406 size_t sizeof_src_line = sizeof(struct source_line);
1407
1408 if (perf_evsel__is_group_event(evsel)) {
1409 for (i = 1; i < evsel->nr_members; i++) {
1410 h = annotation__histogram(notes, evidx + i);
1411 h_sum += h->sum;
1412 }
1413 nr_pcnt = evsel->nr_members;
1414 sizeof_src_line += (nr_pcnt - 1) * sizeof(src_line->samples);
1415 }
1416
1417 if (!h_sum)
1418 return 0;
1419
1420 src_line = notes->src->lines = calloc(len, sizeof_src_line);
1421 if (!notes->src->lines)
1422 return -1;
1423
1424 start = map__rip_2objdump(map, sym->start);
1425
1426 for (i = 0; i < len; i++) {
1427 u64 offset;
1428 double percent_max = 0.0;
1429
1430 src_line->nr_pcnt = nr_pcnt;
1431
1432 for (k = 0; k < nr_pcnt; k++) {
1433 h = annotation__histogram(notes, evidx + k);
1434 src_line->samples[k].percent = 100.0 * h->addr[i] / h->sum;
1435
1436 if (src_line->samples[k].percent > percent_max)
1437 percent_max = src_line->samples[k].percent;
1438 }
1439
1440 if (percent_max <= 0.5)
1441 goto next;
1442
1443 offset = start + i;
1444 src_line->path = get_srcline(map->dso, offset, NULL, false);
1445 insert_source_line(&tmp_root, src_line);
1446
1447 next:
1448 src_line = (void *)src_line + sizeof_src_line;
1449 }
1450
1451 resort_source_line(root, &tmp_root);
1452 return 0;
1453 }
1454
1455 static void print_summary(struct rb_root *root, const char *filename)
1456 {
1457 struct source_line *src_line;
1458 struct rb_node *node;
1459
1460 printf("\nSorted summary for file %s\n", filename);
1461 printf("----------------------------------------------\n\n");
1462
1463 if (RB_EMPTY_ROOT(root)) {
1464 printf(" Nothing higher than %1.1f%%\n", MIN_GREEN);
1465 return;
1466 }
1467
1468 node = rb_first(root);
1469 while (node) {
1470 double percent, percent_max = 0.0;
1471 const char *color;
1472 char *path;
1473 int i;
1474
1475 src_line = rb_entry(node, struct source_line, node);
1476 for (i = 0; i < src_line->nr_pcnt; i++) {
1477 percent = src_line->samples[i].percent_sum;
1478 color = get_percent_color(percent);
1479 color_fprintf(stdout, color, " %7.2f", percent);
1480
1481 if (percent > percent_max)
1482 percent_max = percent;
1483 }
1484
1485 path = src_line->path;
1486 color = get_percent_color(percent_max);
1487 color_fprintf(stdout, color, " %s\n", path);
1488
1489 node = rb_next(node);
1490 }
1491 }
1492
1493 static void symbol__annotate_hits(struct symbol *sym, struct perf_evsel *evsel)
1494 {
1495 struct annotation *notes = symbol__annotation(sym);
1496 struct sym_hist *h = annotation__histogram(notes, evsel->idx);
1497 u64 len = symbol__size(sym), offset;
1498
1499 for (offset = 0; offset < len; ++offset)
1500 if (h->addr[offset] != 0)
1501 printf("%*" PRIx64 ": %" PRIu64 "\n", BITS_PER_LONG / 2,
1502 sym->start + offset, h->addr[offset]);
1503 printf("%*s: %" PRIu64 "\n", BITS_PER_LONG / 2, "h->sum", h->sum);
1504 }
1505
1506 int symbol__annotate_printf(struct symbol *sym, struct map *map,
1507 struct perf_evsel *evsel, bool full_paths,
1508 int min_pcnt, int max_lines, int context)
1509 {
1510 struct dso *dso = map->dso;
1511 char *filename;
1512 const char *d_filename;
1513 const char *evsel_name = perf_evsel__name(evsel);
1514 struct annotation *notes = symbol__annotation(sym);
1515 struct disasm_line *pos, *queue = NULL;
1516 u64 start = map__rip_2objdump(map, sym->start);
1517 int printed = 2, queue_len = 0;
1518 int more = 0;
1519 u64 len;
1520 int width = 8;
1521 int namelen, evsel_name_len, graph_dotted_len;
1522
1523 filename = strdup(dso->long_name);
1524 if (!filename)
1525 return -ENOMEM;
1526
1527 if (full_paths)
1528 d_filename = filename;
1529 else
1530 d_filename = basename(filename);
1531
1532 len = symbol__size(sym);
1533 namelen = strlen(d_filename);
1534 evsel_name_len = strlen(evsel_name);
1535
1536 if (perf_evsel__is_group_event(evsel))
1537 width *= evsel->nr_members;
1538
1539 printf(" %-*.*s| Source code & Disassembly of %s for %s\n",
1540 width, width, "Percent", d_filename, evsel_name);
1541
1542 graph_dotted_len = width + namelen + evsel_name_len;
1543 printf("-%-*.*s-----------------------------------------\n",
1544 graph_dotted_len, graph_dotted_len, graph_dotted_line);
1545
1546 if (verbose)
1547 symbol__annotate_hits(sym, evsel);
1548
1549 list_for_each_entry(pos, &notes->src->source, node) {
1550 if (context && queue == NULL) {
1551 queue = pos;
1552 queue_len = 0;
1553 }
1554
1555 switch (disasm_line__print(pos, sym, start, evsel, len,
1556 min_pcnt, printed, max_lines,
1557 queue)) {
1558 case 0:
1559 ++printed;
1560 if (context) {
1561 printed += queue_len;
1562 queue = NULL;
1563 queue_len = 0;
1564 }
1565 break;
1566 case 1:
1567 /* filtered by max_lines */
1568 ++more;
1569 break;
1570 case -1:
1571 default:
1572 /*
1573 * Filtered by min_pcnt or non IP lines when
1574 * context != 0
1575 */
1576 if (!context)
1577 break;
1578 if (queue_len == context)
1579 queue = list_entry(queue->node.next, typeof(*queue), node);
1580 else
1581 ++queue_len;
1582 break;
1583 }
1584 }
1585
1586 free(filename);
1587
1588 return more;
1589 }
1590
1591 void symbol__annotate_zero_histogram(struct symbol *sym, int evidx)
1592 {
1593 struct annotation *notes = symbol__annotation(sym);
1594 struct sym_hist *h = annotation__histogram(notes, evidx);
1595
1596 memset(h, 0, notes->src->sizeof_sym_hist);
1597 }
1598
1599 void symbol__annotate_decay_histogram(struct symbol *sym, int evidx)
1600 {
1601 struct annotation *notes = symbol__annotation(sym);
1602 struct sym_hist *h = annotation__histogram(notes, evidx);
1603 int len = symbol__size(sym), offset;
1604
1605 h->sum = 0;
1606 for (offset = 0; offset < len; ++offset) {
1607 h->addr[offset] = h->addr[offset] * 7 / 8;
1608 h->sum += h->addr[offset];
1609 }
1610 }
1611
1612 void disasm__purge(struct list_head *head)
1613 {
1614 struct disasm_line *pos, *n;
1615
1616 list_for_each_entry_safe(pos, n, head, node) {
1617 list_del(&pos->node);
1618 disasm_line__free(pos);
1619 }
1620 }
1621
1622 static size_t disasm_line__fprintf(struct disasm_line *dl, FILE *fp)
1623 {
1624 size_t printed;
1625
1626 if (dl->offset == -1)
1627 return fprintf(fp, "%s\n", dl->line);
1628
1629 printed = fprintf(fp, "%#" PRIx64 " %s", dl->offset, dl->name);
1630
1631 if (dl->ops.raw[0] != '\0') {
1632 printed += fprintf(fp, "%.*s %s\n", 6 - (int)printed, " ",
1633 dl->ops.raw);
1634 }
1635
1636 return printed + fprintf(fp, "\n");
1637 }
1638
1639 size_t disasm__fprintf(struct list_head *head, FILE *fp)
1640 {
1641 struct disasm_line *pos;
1642 size_t printed = 0;
1643
1644 list_for_each_entry(pos, head, node)
1645 printed += disasm_line__fprintf(pos, fp);
1646
1647 return printed;
1648 }
1649
1650 int symbol__tty_annotate(struct symbol *sym, struct map *map,
1651 struct perf_evsel *evsel, bool print_lines,
1652 bool full_paths, int min_pcnt, int max_lines)
1653 {
1654 struct dso *dso = map->dso;
1655 struct rb_root source_line = RB_ROOT;
1656 u64 len;
1657
1658 if (symbol__annotate(sym, map, 0) < 0)
1659 return -1;
1660
1661 len = symbol__size(sym);
1662
1663 if (print_lines) {
1664 srcline_full_filename = full_paths;
1665 symbol__get_source_line(sym, map, evsel, &source_line, len);
1666 print_summary(&source_line, dso->long_name);
1667 }
1668
1669 symbol__annotate_printf(sym, map, evsel, full_paths,
1670 min_pcnt, max_lines, 0);
1671 if (print_lines)
1672 symbol__free_source_line(sym, len);
1673
1674 disasm__purge(&symbol__annotation(sym)->src->source);
1675
1676 return 0;
1677 }
1678
1679 int hist_entry__annotate(struct hist_entry *he, size_t privsize)
1680 {
1681 return symbol__annotate(he->ms.sym, he->ms.map, privsize);
1682 }
1683
1684 bool ui__has_annotation(void)
1685 {
1686 return use_browser == 1 && perf_hpp_list.sym;
1687 }
Linux kernel - Deliverables
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