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 <errno.h>
11 #include <inttypes.h>
12 #include "util.h"
13 #include "ui/ui.h"
14 #include "sort.h"
15 #include "build-id.h"
16 #include "color.h"
17 #include "config.h"
18 #include "cache.h"
19 #include "symbol.h"
20 #include "units.h"
21 #include "debug.h"
22 #include "annotate.h"
23 #include "evsel.h"
24 #include "evlist.h"
25 #include "block-range.h"
26 #include "string2.h"
27 #include "arch/common.h"
28 #include <regex.h>
29 #include <pthread.h>
30 #include <linux/bitops.h>
31 #include <linux/kernel.h>
32
33 /* FIXME: For the HE_COLORSET */
34 #include "ui/browser.h"
35
36 /*
37 * FIXME: Using the same values as slang.h,
38 * but that header may not be available everywhere
39 */
40 #define LARROW_CHAR ((unsigned char)',')
41 #define RARROW_CHAR ((unsigned char)'+')
42 #define DARROW_CHAR ((unsigned char)'.')
43 #define UARROW_CHAR ((unsigned char)'-')
44
45 #include "sane_ctype.h"
46
47 struct annotation_options annotation__default_options = {
48 .use_offset = true,
49 .jump_arrows = true,
50 .annotate_src = true,
51 .offset_level = ANNOTATION__OFFSET_JUMP_TARGETS,
52 .percent_type = PERCENT_PERIOD_LOCAL,
53 };
54
55 static regex_t file_lineno;
56
57 static struct ins_ops *ins__find(struct arch *arch, const char *name);
58 static void ins__sort(struct arch *arch);
59 static int disasm_line__parse(char *line, const char **namep, char **rawp);
60
61 struct arch {
62 const char *name;
63 struct ins *instructions;
64 size_t nr_instructions;
65 size_t nr_instructions_allocated;
66 struct ins_ops *(*associate_instruction_ops)(struct arch *arch, const char *name);
67 bool sorted_instructions;
68 bool initialized;
69 void *priv;
70 unsigned int model;
71 unsigned int family;
72 int (*init)(struct arch *arch, char *cpuid);
73 bool (*ins_is_fused)(struct arch *arch, const char *ins1,
74 const char *ins2);
75 struct {
76 char comment_char;
77 char skip_functions_char;
78 } objdump;
79 };
80
81 static struct ins_ops call_ops;
82 static struct ins_ops dec_ops;
83 static struct ins_ops jump_ops;
84 static struct ins_ops mov_ops;
85 static struct ins_ops nop_ops;
86 static struct ins_ops lock_ops;
87 static struct ins_ops ret_ops;
88
arch__grow_instructions(struct arch * arch)89 static int arch__grow_instructions(struct arch *arch)
90 {
91 struct ins *new_instructions;
92 size_t new_nr_allocated;
93
94 if (arch->nr_instructions_allocated == 0 && arch->instructions)
95 goto grow_from_non_allocated_table;
96
97 new_nr_allocated = arch->nr_instructions_allocated + 128;
98 new_instructions = realloc(arch->instructions, new_nr_allocated * sizeof(struct ins));
99 if (new_instructions == NULL)
100 return -1;
101
102 out_update_instructions:
103 arch->instructions = new_instructions;
104 arch->nr_instructions_allocated = new_nr_allocated;
105 return 0;
106
107 grow_from_non_allocated_table:
108 new_nr_allocated = arch->nr_instructions + 128;
109 new_instructions = calloc(new_nr_allocated, sizeof(struct ins));
110 if (new_instructions == NULL)
111 return -1;
112
113 memcpy(new_instructions, arch->instructions, arch->nr_instructions);
114 goto out_update_instructions;
115 }
116
arch__associate_ins_ops(struct arch * arch,const char * name,struct ins_ops * ops)117 static int arch__associate_ins_ops(struct arch* arch, const char *name, struct ins_ops *ops)
118 {
119 struct ins *ins;
120
121 if (arch->nr_instructions == arch->nr_instructions_allocated &&
122 arch__grow_instructions(arch))
123 return -1;
124
125 ins = &arch->instructions[arch->nr_instructions];
126 ins->name = strdup(name);
127 if (!ins->name)
128 return -1;
129
130 ins->ops = ops;
131 arch->nr_instructions++;
132
133 ins__sort(arch);
134 return 0;
135 }
136
137 #include "arch/arm/annotate/instructions.c"
138 #include "arch/arm64/annotate/instructions.c"
139 #include "arch/x86/annotate/instructions.c"
140 #include "arch/powerpc/annotate/instructions.c"
141 #include "arch/s390/annotate/instructions.c"
142
143 static struct arch architectures[] = {
144 {
145 .name = "arm",
146 .init = arm__annotate_init,
147 },
148 {
149 .name = "arm64",
150 .init = arm64__annotate_init,
151 },
152 {
153 .name = "x86",
154 .init = x86__annotate_init,
155 .instructions = x86__instructions,
156 .nr_instructions = ARRAY_SIZE(x86__instructions),
157 .ins_is_fused = x86__ins_is_fused,
158 .objdump = {
159 .comment_char = '#',
160 },
161 },
162 {
163 .name = "powerpc",
164 .init = powerpc__annotate_init,
165 },
166 {
167 .name = "s390",
168 .init = s390__annotate_init,
169 .objdump = {
170 .comment_char = '#',
171 },
172 },
173 };
174
ins__delete(struct ins_operands * ops)175 static void ins__delete(struct ins_operands *ops)
176 {
177 if (ops == NULL)
178 return;
179 zfree(&ops->source.raw);
180 zfree(&ops->source.name);
181 zfree(&ops->target.raw);
182 zfree(&ops->target.name);
183 }
184
ins__raw_scnprintf(struct ins * ins,char * bf,size_t size,struct ins_operands * ops)185 static int ins__raw_scnprintf(struct ins *ins, char *bf, size_t size,
186 struct ins_operands *ops)
187 {
188 return scnprintf(bf, size, "%-6s %s", ins->name, ops->raw);
189 }
190
ins__scnprintf(struct ins * ins,char * bf,size_t size,struct ins_operands * ops)191 int ins__scnprintf(struct ins *ins, char *bf, size_t size,
192 struct ins_operands *ops)
193 {
194 if (ins->ops->scnprintf)
195 return ins->ops->scnprintf(ins, bf, size, ops);
196
197 return ins__raw_scnprintf(ins, bf, size, ops);
198 }
199
ins__is_fused(struct arch * arch,const char * ins1,const char * ins2)200 bool ins__is_fused(struct arch *arch, const char *ins1, const char *ins2)
201 {
202 if (!arch || !arch->ins_is_fused)
203 return false;
204
205 return arch->ins_is_fused(arch, ins1, ins2);
206 }
207
call__parse(struct arch * arch,struct ins_operands * ops,struct map_symbol * ms)208 static int call__parse(struct arch *arch, struct ins_operands *ops, struct map_symbol *ms)
209 {
210 char *endptr, *tok, *name;
211 struct map *map = ms->map;
212 struct addr_map_symbol target = {
213 .map = map,
214 };
215
216 ops->target.addr = strtoull(ops->raw, &endptr, 16);
217
218 name = strchr(endptr, '<');
219 if (name == NULL)
220 goto indirect_call;
221
222 name++;
223
224 if (arch->objdump.skip_functions_char &&
225 strchr(name, arch->objdump.skip_functions_char))
226 return -1;
227
228 tok = strchr(name, '>');
229 if (tok == NULL)
230 return -1;
231
232 *tok = '\0';
233 ops->target.name = strdup(name);
234 *tok = '>';
235
236 if (ops->target.name == NULL)
237 return -1;
238 find_target:
239 target.addr = map__objdump_2mem(map, ops->target.addr);
240
241 if (map_groups__find_ams(&target) == 0 &&
242 map__rip_2objdump(target.map, map->map_ip(target.map, target.addr)) == ops->target.addr)
243 ops->target.sym = target.sym;
244
245 return 0;
246
247 indirect_call:
248 tok = strchr(endptr, '*');
249 if (tok != NULL) {
250 endptr++;
251
252 /* Indirect call can use a non-rip register and offset: callq *0x8(%rbx).
253 * Do not parse such instruction. */
254 if (strstr(endptr, "(%r") == NULL)
255 ops->target.addr = strtoull(endptr, NULL, 16);
256 }
257 goto find_target;
258 }
259
call__scnprintf(struct ins * ins,char * bf,size_t size,struct ins_operands * ops)260 static int call__scnprintf(struct ins *ins, char *bf, size_t size,
261 struct ins_operands *ops)
262 {
263 if (ops->target.sym)
264 return scnprintf(bf, size, "%-6s %s", ins->name, ops->target.sym->name);
265
266 if (ops->target.addr == 0)
267 return ins__raw_scnprintf(ins, bf, size, ops);
268
269 if (ops->target.name)
270 return scnprintf(bf, size, "%-6s %s", ins->name, ops->target.name);
271
272 return scnprintf(bf, size, "%-6s *%" PRIx64, ins->name, ops->target.addr);
273 }
274
275 static struct ins_ops call_ops = {
276 .parse = call__parse,
277 .scnprintf = call__scnprintf,
278 };
279
ins__is_call(const struct ins * ins)280 bool ins__is_call(const struct ins *ins)
281 {
282 return ins->ops == &call_ops || ins->ops == &s390_call_ops;
283 }
284
285 /*
286 * Prevents from matching commas in the comment section, e.g.:
287 * ffff200008446e70: b.cs ffff2000084470f4 <generic_exec_single+0x314> // b.hs, b.nlast
288 */
validate_comma(const char * c,struct ins_operands * ops)289 static inline const char *validate_comma(const char *c, struct ins_operands *ops)
290 {
291 if (ops->raw_comment && c > ops->raw_comment)
292 return NULL;
293
294 return c;
295 }
296
jump__parse(struct arch * arch,struct ins_operands * ops,struct map_symbol * ms)297 static int jump__parse(struct arch *arch, struct ins_operands *ops, struct map_symbol *ms)
298 {
299 struct map *map = ms->map;
300 struct symbol *sym = ms->sym;
301 struct addr_map_symbol target = {
302 .map = map,
303 };
304 const char *c = strchr(ops->raw, ',');
305 u64 start, end;
306
307 ops->raw_comment = strchr(ops->raw, arch->objdump.comment_char);
308 c = validate_comma(c, ops);
309
310 /*
311 * Examples of lines to parse for the _cpp_lex_token@@Base
312 * function:
313 *
314 * 1159e6c: jne 115aa32 <_cpp_lex_token@@Base+0xf92>
315 * 1159e8b: jne c469be <cpp_named_operator2name@@Base+0xa72>
316 *
317 * The first is a jump to an offset inside the same function,
318 * the second is to another function, i.e. that 0xa72 is an
319 * offset in the cpp_named_operator2name@@base function.
320 */
321 /*
322 * skip over possible up to 2 operands to get to address, e.g.:
323 * tbnz w0, #26, ffff0000083cd190 <security_file_permission+0xd0>
324 */
325 if (c++ != NULL) {
326 ops->target.addr = strtoull(c, NULL, 16);
327 if (!ops->target.addr) {
328 c = strchr(c, ',');
329 c = validate_comma(c, ops);
330 if (c++ != NULL)
331 ops->target.addr = strtoull(c, NULL, 16);
332 }
333 } else {
334 ops->target.addr = strtoull(ops->raw, NULL, 16);
335 }
336
337 target.addr = map__objdump_2mem(map, ops->target.addr);
338 start = map->unmap_ip(map, sym->start),
339 end = map->unmap_ip(map, sym->end);
340
341 ops->target.outside = target.addr < start || target.addr > end;
342
343 /*
344 * FIXME: things like this in _cpp_lex_token (gcc's cc1 program):
345
346 cpp_named_operator2name@@Base+0xa72
347
348 * Point to a place that is after the cpp_named_operator2name
349 * boundaries, i.e. in the ELF symbol table for cc1
350 * cpp_named_operator2name is marked as being 32-bytes long, but it in
351 * fact is much larger than that, so we seem to need a symbols__find()
352 * routine that looks for >= current->start and < next_symbol->start,
353 * possibly just for C++ objects?
354 *
355 * For now lets just make some progress by marking jumps to outside the
356 * current function as call like.
357 *
358 * Actual navigation will come next, with further understanding of how
359 * the symbol searching and disassembly should be done.
360 */
361 if (map_groups__find_ams(&target) == 0 &&
362 map__rip_2objdump(target.map, map->map_ip(target.map, target.addr)) == ops->target.addr)
363 ops->target.sym = target.sym;
364
365 if (!ops->target.outside) {
366 ops->target.offset = target.addr - start;
367 ops->target.offset_avail = true;
368 } else {
369 ops->target.offset_avail = false;
370 }
371
372 return 0;
373 }
374
jump__scnprintf(struct ins * ins,char * bf,size_t size,struct ins_operands * ops)375 static int jump__scnprintf(struct ins *ins, char *bf, size_t size,
376 struct ins_operands *ops)
377 {
378 const char *c;
379
380 if (!ops->target.addr || ops->target.offset < 0)
381 return ins__raw_scnprintf(ins, bf, size, ops);
382
383 if (ops->target.outside && ops->target.sym != NULL)
384 return scnprintf(bf, size, "%-6s %s", ins->name, ops->target.sym->name);
385
386 c = strchr(ops->raw, ',');
387 c = validate_comma(c, ops);
388
389 if (c != NULL) {
390 const char *c2 = strchr(c + 1, ',');
391
392 c2 = validate_comma(c2, ops);
393 /* check for 3-op insn */
394 if (c2 != NULL)
395 c = c2;
396 c++;
397
398 /* mirror arch objdump's space-after-comma style */
399 if (*c == ' ')
400 c++;
401 }
402
403 return scnprintf(bf, size, "%-6s %.*s%" PRIx64,
404 ins->name, c ? c - ops->raw : 0, ops->raw,
405 ops->target.offset);
406 }
407
408 static struct ins_ops jump_ops = {
409 .parse = jump__parse,
410 .scnprintf = jump__scnprintf,
411 };
412
ins__is_jump(const struct ins * ins)413 bool ins__is_jump(const struct ins *ins)
414 {
415 return ins->ops == &jump_ops;
416 }
417
comment__symbol(char * raw,char * comment,u64 * addrp,char ** namep)418 static int comment__symbol(char *raw, char *comment, u64 *addrp, char **namep)
419 {
420 char *endptr, *name, *t;
421
422 if (strstr(raw, "(%rip)") == NULL)
423 return 0;
424
425 *addrp = strtoull(comment, &endptr, 16);
426 if (endptr == comment)
427 return 0;
428 name = strchr(endptr, '<');
429 if (name == NULL)
430 return -1;
431
432 name++;
433
434 t = strchr(name, '>');
435 if (t == NULL)
436 return 0;
437
438 *t = '\0';
439 *namep = strdup(name);
440 *t = '>';
441
442 return 0;
443 }
444
lock__parse(struct arch * arch,struct ins_operands * ops,struct map_symbol * ms)445 static int lock__parse(struct arch *arch, struct ins_operands *ops, struct map_symbol *ms)
446 {
447 ops->locked.ops = zalloc(sizeof(*ops->locked.ops));
448 if (ops->locked.ops == NULL)
449 return 0;
450
451 if (disasm_line__parse(ops->raw, &ops->locked.ins.name, &ops->locked.ops->raw) < 0)
452 goto out_free_ops;
453
454 ops->locked.ins.ops = ins__find(arch, ops->locked.ins.name);
455
456 if (ops->locked.ins.ops == NULL)
457 goto out_free_ops;
458
459 if (ops->locked.ins.ops->parse &&
460 ops->locked.ins.ops->parse(arch, ops->locked.ops, ms) < 0)
461 goto out_free_ops;
462
463 return 0;
464
465 out_free_ops:
466 zfree(&ops->locked.ops);
467 return 0;
468 }
469
lock__scnprintf(struct ins * ins,char * bf,size_t size,struct ins_operands * ops)470 static int lock__scnprintf(struct ins *ins, char *bf, size_t size,
471 struct ins_operands *ops)
472 {
473 int printed;
474
475 if (ops->locked.ins.ops == NULL)
476 return ins__raw_scnprintf(ins, bf, size, ops);
477
478 printed = scnprintf(bf, size, "%-6s ", ins->name);
479 return printed + ins__scnprintf(&ops->locked.ins, bf + printed,
480 size - printed, ops->locked.ops);
481 }
482
lock__delete(struct ins_operands * ops)483 static void lock__delete(struct ins_operands *ops)
484 {
485 struct ins *ins = &ops->locked.ins;
486
487 if (ins->ops && ins->ops->free)
488 ins->ops->free(ops->locked.ops);
489 else
490 ins__delete(ops->locked.ops);
491
492 zfree(&ops->locked.ops);
493 zfree(&ops->target.raw);
494 zfree(&ops->target.name);
495 }
496
497 static struct ins_ops lock_ops = {
498 .free = lock__delete,
499 .parse = lock__parse,
500 .scnprintf = lock__scnprintf,
501 };
502
mov__parse(struct arch * arch,struct ins_operands * ops,struct map_symbol * ms __maybe_unused)503 static int mov__parse(struct arch *arch, struct ins_operands *ops, struct map_symbol *ms __maybe_unused)
504 {
505 char *s = strchr(ops->raw, ','), *target, *comment, prev;
506
507 if (s == NULL)
508 return -1;
509
510 *s = '\0';
511 ops->source.raw = strdup(ops->raw);
512 *s = ',';
513
514 if (ops->source.raw == NULL)
515 return -1;
516
517 target = ++s;
518 comment = strchr(s, arch->objdump.comment_char);
519
520 if (comment != NULL)
521 s = comment - 1;
522 else
523 s = strchr(s, '\0') - 1;
524
525 while (s > target && isspace(s[0]))
526 --s;
527 s++;
528 prev = *s;
529 *s = '\0';
530
531 ops->target.raw = strdup(target);
532 *s = prev;
533
534 if (ops->target.raw == NULL)
535 goto out_free_source;
536
537 if (comment == NULL)
538 return 0;
539
540 comment = ltrim(comment);
541 comment__symbol(ops->source.raw, comment + 1, &ops->source.addr, &ops->source.name);
542 comment__symbol(ops->target.raw, comment + 1, &ops->target.addr, &ops->target.name);
543
544 return 0;
545
546 out_free_source:
547 zfree(&ops->source.raw);
548 return -1;
549 }
550
mov__scnprintf(struct ins * ins,char * bf,size_t size,struct ins_operands * ops)551 static int mov__scnprintf(struct ins *ins, char *bf, size_t size,
552 struct ins_operands *ops)
553 {
554 return scnprintf(bf, size, "%-6s %s,%s", ins->name,
555 ops->source.name ?: ops->source.raw,
556 ops->target.name ?: ops->target.raw);
557 }
558
559 static struct ins_ops mov_ops = {
560 .parse = mov__parse,
561 .scnprintf = mov__scnprintf,
562 };
563
dec__parse(struct arch * arch __maybe_unused,struct ins_operands * ops,struct map_symbol * ms __maybe_unused)564 static int dec__parse(struct arch *arch __maybe_unused, struct ins_operands *ops, struct map_symbol *ms __maybe_unused)
565 {
566 char *target, *comment, *s, prev;
567
568 target = s = ops->raw;
569
570 while (s[0] != '\0' && !isspace(s[0]))
571 ++s;
572 prev = *s;
573 *s = '\0';
574
575 ops->target.raw = strdup(target);
576 *s = prev;
577
578 if (ops->target.raw == NULL)
579 return -1;
580
581 comment = strchr(s, arch->objdump.comment_char);
582 if (comment == NULL)
583 return 0;
584
585 comment = ltrim(comment);
586 comment__symbol(ops->target.raw, comment + 1, &ops->target.addr, &ops->target.name);
587
588 return 0;
589 }
590
dec__scnprintf(struct ins * ins,char * bf,size_t size,struct ins_operands * ops)591 static int dec__scnprintf(struct ins *ins, char *bf, size_t size,
592 struct ins_operands *ops)
593 {
594 return scnprintf(bf, size, "%-6s %s", ins->name,
595 ops->target.name ?: ops->target.raw);
596 }
597
598 static struct ins_ops dec_ops = {
599 .parse = dec__parse,
600 .scnprintf = dec__scnprintf,
601 };
602
nop__scnprintf(struct ins * ins __maybe_unused,char * bf,size_t size,struct ins_operands * ops __maybe_unused)603 static int nop__scnprintf(struct ins *ins __maybe_unused, char *bf, size_t size,
604 struct ins_operands *ops __maybe_unused)
605 {
606 return scnprintf(bf, size, "%-6s", "nop");
607 }
608
609 static struct ins_ops nop_ops = {
610 .scnprintf = nop__scnprintf,
611 };
612
613 static struct ins_ops ret_ops = {
614 .scnprintf = ins__raw_scnprintf,
615 };
616
ins__is_ret(const struct ins * ins)617 bool ins__is_ret(const struct ins *ins)
618 {
619 return ins->ops == &ret_ops;
620 }
621
ins__is_lock(const struct ins * ins)622 bool ins__is_lock(const struct ins *ins)
623 {
624 return ins->ops == &lock_ops;
625 }
626
ins__key_cmp(const void * name,const void * insp)627 static int ins__key_cmp(const void *name, const void *insp)
628 {
629 const struct ins *ins = insp;
630
631 return strcmp(name, ins->name);
632 }
633
ins__cmp(const void * a,const void * b)634 static int ins__cmp(const void *a, const void *b)
635 {
636 const struct ins *ia = a;
637 const struct ins *ib = b;
638
639 return strcmp(ia->name, ib->name);
640 }
641
ins__sort(struct arch * arch)642 static void ins__sort(struct arch *arch)
643 {
644 const int nmemb = arch->nr_instructions;
645
646 qsort(arch->instructions, nmemb, sizeof(struct ins), ins__cmp);
647 }
648
__ins__find(struct arch * arch,const char * name)649 static struct ins_ops *__ins__find(struct arch *arch, const char *name)
650 {
651 struct ins *ins;
652 const int nmemb = arch->nr_instructions;
653
654 if (!arch->sorted_instructions) {
655 ins__sort(arch);
656 arch->sorted_instructions = true;
657 }
658
659 ins = bsearch(name, arch->instructions, nmemb, sizeof(struct ins), ins__key_cmp);
660 return ins ? ins->ops : NULL;
661 }
662
ins__find(struct arch * arch,const char * name)663 static struct ins_ops *ins__find(struct arch *arch, const char *name)
664 {
665 struct ins_ops *ops = __ins__find(arch, name);
666
667 if (!ops && arch->associate_instruction_ops)
668 ops = arch->associate_instruction_ops(arch, name);
669
670 return ops;
671 }
672
arch__key_cmp(const void * name,const void * archp)673 static int arch__key_cmp(const void *name, const void *archp)
674 {
675 const struct arch *arch = archp;
676
677 return strcmp(name, arch->name);
678 }
679
arch__cmp(const void * a,const void * b)680 static int arch__cmp(const void *a, const void *b)
681 {
682 const struct arch *aa = a;
683 const struct arch *ab = b;
684
685 return strcmp(aa->name, ab->name);
686 }
687
arch__sort(void)688 static void arch__sort(void)
689 {
690 const int nmemb = ARRAY_SIZE(architectures);
691
692 qsort(architectures, nmemb, sizeof(struct arch), arch__cmp);
693 }
694
arch__find(const char * name)695 static struct arch *arch__find(const char *name)
696 {
697 const int nmemb = ARRAY_SIZE(architectures);
698 static bool sorted;
699
700 if (!sorted) {
701 arch__sort();
702 sorted = true;
703 }
704
705 return bsearch(name, architectures, nmemb, sizeof(struct arch), arch__key_cmp);
706 }
707
annotated_source__new(void)708 static struct annotated_source *annotated_source__new(void)
709 {
710 struct annotated_source *src = zalloc(sizeof(*src));
711
712 if (src != NULL)
713 INIT_LIST_HEAD(&src->source);
714
715 return src;
716 }
717
annotated_source__delete(struct annotated_source * src)718 static __maybe_unused void annotated_source__delete(struct annotated_source *src)
719 {
720 if (src == NULL)
721 return;
722 zfree(&src->histograms);
723 zfree(&src->cycles_hist);
724 free(src);
725 }
726
annotated_source__alloc_histograms(struct annotated_source * src,size_t size,int nr_hists)727 static int annotated_source__alloc_histograms(struct annotated_source *src,
728 size_t size, int nr_hists)
729 {
730 size_t sizeof_sym_hist;
731
732 /*
733 * Add buffer of one element for zero length symbol.
734 * When sample is taken from first instruction of
735 * zero length symbol, perf still resolves it and
736 * shows symbol name in perf report and allows to
737 * annotate it.
738 */
739 if (size == 0)
740 size = 1;
741
742 /* Check for overflow when calculating sizeof_sym_hist */
743 if (size > (SIZE_MAX - sizeof(struct sym_hist)) / sizeof(struct sym_hist_entry))
744 return -1;
745
746 sizeof_sym_hist = (sizeof(struct sym_hist) + size * sizeof(struct sym_hist_entry));
747
748 /* Check for overflow in zalloc argument */
749 if (sizeof_sym_hist > SIZE_MAX / nr_hists)
750 return -1;
751
752 src->sizeof_sym_hist = sizeof_sym_hist;
753 src->nr_histograms = nr_hists;
754 src->histograms = calloc(nr_hists, sizeof_sym_hist) ;
755 return src->histograms ? 0 : -1;
756 }
757
758 /* The cycles histogram is lazily allocated. */
symbol__alloc_hist_cycles(struct symbol * sym)759 static int symbol__alloc_hist_cycles(struct symbol *sym)
760 {
761 struct annotation *notes = symbol__annotation(sym);
762 const size_t size = symbol__size(sym);
763
764 notes->src->cycles_hist = calloc(size, sizeof(struct cyc_hist));
765 if (notes->src->cycles_hist == NULL)
766 return -1;
767 return 0;
768 }
769
symbol__annotate_zero_histograms(struct symbol * sym)770 void symbol__annotate_zero_histograms(struct symbol *sym)
771 {
772 struct annotation *notes = symbol__annotation(sym);
773
774 pthread_mutex_lock(¬es->lock);
775 if (notes->src != NULL) {
776 memset(notes->src->histograms, 0,
777 notes->src->nr_histograms * notes->src->sizeof_sym_hist);
778 if (notes->src->cycles_hist)
779 memset(notes->src->cycles_hist, 0,
780 symbol__size(sym) * sizeof(struct cyc_hist));
781 }
782 pthread_mutex_unlock(¬es->lock);
783 }
784
__symbol__account_cycles(struct cyc_hist * ch,u64 start,unsigned offset,unsigned cycles,unsigned have_start)785 static int __symbol__account_cycles(struct cyc_hist *ch,
786 u64 start,
787 unsigned offset, unsigned cycles,
788 unsigned have_start)
789 {
790 /*
791 * For now we can only account one basic block per
792 * final jump. But multiple could be overlapping.
793 * Always account the longest one. So when
794 * a shorter one has been already seen throw it away.
795 *
796 * We separately always account the full cycles.
797 */
798 ch[offset].num_aggr++;
799 ch[offset].cycles_aggr += cycles;
800
801 if (cycles > ch[offset].cycles_max)
802 ch[offset].cycles_max = cycles;
803
804 if (ch[offset].cycles_min) {
805 if (cycles && cycles < ch[offset].cycles_min)
806 ch[offset].cycles_min = cycles;
807 } else
808 ch[offset].cycles_min = cycles;
809
810 if (!have_start && ch[offset].have_start)
811 return 0;
812 if (ch[offset].num) {
813 if (have_start && (!ch[offset].have_start ||
814 ch[offset].start > start)) {
815 ch[offset].have_start = 0;
816 ch[offset].cycles = 0;
817 ch[offset].num = 0;
818 if (ch[offset].reset < 0xffff)
819 ch[offset].reset++;
820 } else if (have_start &&
821 ch[offset].start < start)
822 return 0;
823 }
824 ch[offset].have_start = have_start;
825 ch[offset].start = start;
826 ch[offset].cycles += cycles;
827 ch[offset].num++;
828 return 0;
829 }
830
__symbol__inc_addr_samples(struct symbol * sym,struct map * map,struct annotated_source * src,int evidx,u64 addr,struct perf_sample * sample)831 static int __symbol__inc_addr_samples(struct symbol *sym, struct map *map,
832 struct annotated_source *src, int evidx, u64 addr,
833 struct perf_sample *sample)
834 {
835 unsigned offset;
836 struct sym_hist *h;
837
838 pr_debug3("%s: addr=%#" PRIx64 "\n", __func__, map->unmap_ip(map, addr));
839
840 if ((addr < sym->start || addr >= sym->end) &&
841 (addr != sym->end || sym->start != sym->end)) {
842 pr_debug("%s(%d): ERANGE! sym->name=%s, start=%#" PRIx64 ", addr=%#" PRIx64 ", end=%#" PRIx64 "\n",
843 __func__, __LINE__, sym->name, sym->start, addr, sym->end);
844 return -ERANGE;
845 }
846
847 offset = addr - sym->start;
848 h = annotated_source__histogram(src, evidx);
849 if (h == NULL) {
850 pr_debug("%s(%d): ENOMEM! sym->name=%s, start=%#" PRIx64 ", addr=%#" PRIx64 ", end=%#" PRIx64 ", func: %d\n",
851 __func__, __LINE__, sym->name, sym->start, addr, sym->end, sym->type == STT_FUNC);
852 return -ENOMEM;
853 }
854 h->nr_samples++;
855 h->addr[offset].nr_samples++;
856 h->period += sample->period;
857 h->addr[offset].period += sample->period;
858
859 pr_debug3("%#" PRIx64 " %s: period++ [addr: %#" PRIx64 ", %#" PRIx64
860 ", evidx=%d] => nr_samples: %" PRIu64 ", period: %" PRIu64 "\n",
861 sym->start, sym->name, addr, addr - sym->start, evidx,
862 h->addr[offset].nr_samples, h->addr[offset].period);
863 return 0;
864 }
865
symbol__cycles_hist(struct symbol * sym)866 static struct cyc_hist *symbol__cycles_hist(struct symbol *sym)
867 {
868 struct annotation *notes = symbol__annotation(sym);
869
870 if (notes->src == NULL) {
871 notes->src = annotated_source__new();
872 if (notes->src == NULL)
873 return NULL;
874 goto alloc_cycles_hist;
875 }
876
877 if (!notes->src->cycles_hist) {
878 alloc_cycles_hist:
879 symbol__alloc_hist_cycles(sym);
880 }
881
882 return notes->src->cycles_hist;
883 }
884
symbol__hists(struct symbol * sym,int nr_hists)885 struct annotated_source *symbol__hists(struct symbol *sym, int nr_hists)
886 {
887 struct annotation *notes = symbol__annotation(sym);
888
889 if (notes->src == NULL) {
890 notes->src = annotated_source__new();
891 if (notes->src == NULL)
892 return NULL;
893 goto alloc_histograms;
894 }
895
896 if (notes->src->histograms == NULL) {
897 alloc_histograms:
898 annotated_source__alloc_histograms(notes->src, symbol__size(sym),
899 nr_hists);
900 }
901
902 return notes->src;
903 }
904
symbol__inc_addr_samples(struct symbol * sym,struct map * map,struct perf_evsel * evsel,u64 addr,struct perf_sample * sample)905 static int symbol__inc_addr_samples(struct symbol *sym, struct map *map,
906 struct perf_evsel *evsel, u64 addr,
907 struct perf_sample *sample)
908 {
909 struct annotated_source *src;
910
911 if (sym == NULL)
912 return 0;
913 src = symbol__hists(sym, evsel->evlist->nr_entries);
914 if (src == NULL)
915 return -ENOMEM;
916 return __symbol__inc_addr_samples(sym, map, src, evsel->idx, addr, sample);
917 }
918
symbol__account_cycles(u64 addr,u64 start,struct symbol * sym,unsigned cycles)919 static int symbol__account_cycles(u64 addr, u64 start,
920 struct symbol *sym, unsigned cycles)
921 {
922 struct cyc_hist *cycles_hist;
923 unsigned offset;
924
925 if (sym == NULL)
926 return 0;
927 cycles_hist = symbol__cycles_hist(sym);
928 if (cycles_hist == NULL)
929 return -ENOMEM;
930 if (addr < sym->start || addr >= sym->end)
931 return -ERANGE;
932
933 if (start) {
934 if (start < sym->start || start >= sym->end)
935 return -ERANGE;
936 if (start >= addr)
937 start = 0;
938 }
939 offset = addr - sym->start;
940 return __symbol__account_cycles(cycles_hist,
941 start ? start - sym->start : 0,
942 offset, cycles,
943 !!start);
944 }
945
addr_map_symbol__account_cycles(struct addr_map_symbol * ams,struct addr_map_symbol * start,unsigned cycles)946 int addr_map_symbol__account_cycles(struct addr_map_symbol *ams,
947 struct addr_map_symbol *start,
948 unsigned cycles)
949 {
950 u64 saddr = 0;
951 int err;
952
953 if (!cycles)
954 return 0;
955
956 /*
957 * Only set start when IPC can be computed. We can only
958 * compute it when the basic block is completely in a single
959 * function.
960 * Special case the case when the jump is elsewhere, but
961 * it starts on the function start.
962 */
963 if (start &&
964 (start->sym == ams->sym ||
965 (ams->sym &&
966 start->addr == ams->sym->start + ams->map->start)))
967 saddr = start->al_addr;
968 if (saddr == 0)
969 pr_debug2("BB with bad start: addr %"PRIx64" start %"PRIx64" sym %"PRIx64" saddr %"PRIx64"\n",
970 ams->addr,
971 start ? start->addr : 0,
972 ams->sym ? ams->sym->start + ams->map->start : 0,
973 saddr);
974 err = symbol__account_cycles(ams->al_addr, saddr, ams->sym, cycles);
975 if (err)
976 pr_debug2("account_cycles failed %d\n", err);
977 return err;
978 }
979
annotation__count_insn(struct annotation * notes,u64 start,u64 end)980 static unsigned annotation__count_insn(struct annotation *notes, u64 start, u64 end)
981 {
982 unsigned n_insn = 0;
983 u64 offset;
984
985 for (offset = start; offset <= end; offset++) {
986 if (notes->offsets[offset])
987 n_insn++;
988 }
989 return n_insn;
990 }
991
annotation__count_and_fill(struct annotation * notes,u64 start,u64 end,struct cyc_hist * ch)992 static void annotation__count_and_fill(struct annotation *notes, u64 start, u64 end, struct cyc_hist *ch)
993 {
994 unsigned n_insn;
995 u64 offset;
996
997 n_insn = annotation__count_insn(notes, start, end);
998 if (n_insn && ch->num && ch->cycles) {
999 float ipc = n_insn / ((double)ch->cycles / (double)ch->num);
1000
1001 /* Hide data when there are too many overlaps. */
1002 if (ch->reset >= 0x7fff || ch->reset >= ch->num / 2)
1003 return;
1004
1005 for (offset = start; offset <= end; offset++) {
1006 struct annotation_line *al = notes->offsets[offset];
1007
1008 if (al)
1009 al->ipc = ipc;
1010 }
1011 }
1012 }
1013
annotation__compute_ipc(struct annotation * notes,size_t size)1014 void annotation__compute_ipc(struct annotation *notes, size_t size)
1015 {
1016 u64 offset;
1017
1018 if (!notes->src || !notes->src->cycles_hist)
1019 return;
1020
1021 pthread_mutex_lock(¬es->lock);
1022 for (offset = 0; offset < size; ++offset) {
1023 struct cyc_hist *ch;
1024
1025 ch = ¬es->src->cycles_hist[offset];
1026 if (ch && ch->cycles) {
1027 struct annotation_line *al;
1028
1029 if (ch->have_start)
1030 annotation__count_and_fill(notes, ch->start, offset, ch);
1031 al = notes->offsets[offset];
1032 if (al && ch->num_aggr) {
1033 al->cycles = ch->cycles_aggr / ch->num_aggr;
1034 al->cycles_max = ch->cycles_max;
1035 al->cycles_min = ch->cycles_min;
1036 }
1037 notes->have_cycles = true;
1038 }
1039 }
1040 pthread_mutex_unlock(¬es->lock);
1041 }
1042
addr_map_symbol__inc_samples(struct addr_map_symbol * ams,struct perf_sample * sample,struct perf_evsel * evsel)1043 int addr_map_symbol__inc_samples(struct addr_map_symbol *ams, struct perf_sample *sample,
1044 struct perf_evsel *evsel)
1045 {
1046 return symbol__inc_addr_samples(ams->sym, ams->map, evsel, ams->al_addr, sample);
1047 }
1048
hist_entry__inc_addr_samples(struct hist_entry * he,struct perf_sample * sample,struct perf_evsel * evsel,u64 ip)1049 int hist_entry__inc_addr_samples(struct hist_entry *he, struct perf_sample *sample,
1050 struct perf_evsel *evsel, u64 ip)
1051 {
1052 return symbol__inc_addr_samples(he->ms.sym, he->ms.map, evsel, ip, sample);
1053 }
1054
disasm_line__init_ins(struct disasm_line * dl,struct arch * arch,struct map_symbol * ms)1055 static void disasm_line__init_ins(struct disasm_line *dl, struct arch *arch, struct map_symbol *ms)
1056 {
1057 dl->ins.ops = ins__find(arch, dl->ins.name);
1058
1059 if (!dl->ins.ops)
1060 return;
1061
1062 if (dl->ins.ops->parse && dl->ins.ops->parse(arch, &dl->ops, ms) < 0)
1063 dl->ins.ops = NULL;
1064 }
1065
disasm_line__parse(char * line,const char ** namep,char ** rawp)1066 static int disasm_line__parse(char *line, const char **namep, char **rawp)
1067 {
1068 char tmp, *name = ltrim(line);
1069
1070 if (name[0] == '\0')
1071 return -1;
1072
1073 *rawp = name + 1;
1074
1075 while ((*rawp)[0] != '\0' && !isspace((*rawp)[0]))
1076 ++*rawp;
1077
1078 tmp = (*rawp)[0];
1079 (*rawp)[0] = '\0';
1080 *namep = strdup(name);
1081
1082 if (*namep == NULL)
1083 goto out_free_name;
1084
1085 (*rawp)[0] = tmp;
1086 *rawp = ltrim(*rawp);
1087
1088 return 0;
1089
1090 out_free_name:
1091 free((void *)namep);
1092 *namep = NULL;
1093 return -1;
1094 }
1095
1096 struct annotate_args {
1097 size_t privsize;
1098 struct arch *arch;
1099 struct map_symbol ms;
1100 struct perf_evsel *evsel;
1101 struct annotation_options *options;
1102 s64 offset;
1103 char *line;
1104 int line_nr;
1105 };
1106
annotation_line__delete(struct annotation_line * al)1107 static void annotation_line__delete(struct annotation_line *al)
1108 {
1109 void *ptr = (void *) al - al->privsize;
1110
1111 free_srcline(al->path);
1112 zfree(&al->line);
1113 free(ptr);
1114 }
1115
1116 /*
1117 * Allocating the annotation line data with following
1118 * structure:
1119 *
1120 * --------------------------------------
1121 * private space | struct annotation_line
1122 * --------------------------------------
1123 *
1124 * Size of the private space is stored in 'struct annotation_line'.
1125 *
1126 */
1127 static struct annotation_line *
annotation_line__new(struct annotate_args * args,size_t privsize)1128 annotation_line__new(struct annotate_args *args, size_t privsize)
1129 {
1130 struct annotation_line *al;
1131 struct perf_evsel *evsel = args->evsel;
1132 size_t size = privsize + sizeof(*al);
1133 int nr = 1;
1134
1135 if (perf_evsel__is_group_event(evsel))
1136 nr = evsel->nr_members;
1137
1138 size += sizeof(al->data[0]) * nr;
1139
1140 al = zalloc(size);
1141 if (al) {
1142 al = (void *) al + privsize;
1143 al->privsize = privsize;
1144 al->offset = args->offset;
1145 al->line = strdup(args->line);
1146 al->line_nr = args->line_nr;
1147 al->data_nr = nr;
1148 }
1149
1150 return al;
1151 }
1152
1153 /*
1154 * Allocating the disasm annotation line data with
1155 * following structure:
1156 *
1157 * ------------------------------------------------------------
1158 * privsize space | struct disasm_line | struct annotation_line
1159 * ------------------------------------------------------------
1160 *
1161 * We have 'struct annotation_line' member as last member
1162 * of 'struct disasm_line' to have an easy access.
1163 *
1164 */
disasm_line__new(struct annotate_args * args)1165 static struct disasm_line *disasm_line__new(struct annotate_args *args)
1166 {
1167 struct disasm_line *dl = NULL;
1168 struct annotation_line *al;
1169 size_t privsize = args->privsize + offsetof(struct disasm_line, al);
1170
1171 al = annotation_line__new(args, privsize);
1172 if (al != NULL) {
1173 dl = disasm_line(al);
1174
1175 if (dl->al.line == NULL)
1176 goto out_delete;
1177
1178 if (args->offset != -1) {
1179 if (disasm_line__parse(dl->al.line, &dl->ins.name, &dl->ops.raw) < 0)
1180 goto out_free_line;
1181
1182 disasm_line__init_ins(dl, args->arch, &args->ms);
1183 }
1184 }
1185
1186 return dl;
1187
1188 out_free_line:
1189 zfree(&dl->al.line);
1190 out_delete:
1191 free(dl);
1192 return NULL;
1193 }
1194
disasm_line__free(struct disasm_line * dl)1195 void disasm_line__free(struct disasm_line *dl)
1196 {
1197 if (dl->ins.ops && dl->ins.ops->free)
1198 dl->ins.ops->free(&dl->ops);
1199 else
1200 ins__delete(&dl->ops);
1201 free((void *)dl->ins.name);
1202 dl->ins.name = NULL;
1203 annotation_line__delete(&dl->al);
1204 }
1205
disasm_line__scnprintf(struct disasm_line * dl,char * bf,size_t size,bool raw)1206 int disasm_line__scnprintf(struct disasm_line *dl, char *bf, size_t size, bool raw)
1207 {
1208 if (raw || !dl->ins.ops)
1209 return scnprintf(bf, size, "%-6s %s", dl->ins.name, dl->ops.raw);
1210
1211 return ins__scnprintf(&dl->ins, bf, size, &dl->ops);
1212 }
1213
annotation_line__add(struct annotation_line * al,struct list_head * head)1214 static void annotation_line__add(struct annotation_line *al, struct list_head *head)
1215 {
1216 list_add_tail(&al->node, head);
1217 }
1218
1219 struct annotation_line *
annotation_line__next(struct annotation_line * pos,struct list_head * head)1220 annotation_line__next(struct annotation_line *pos, struct list_head *head)
1221 {
1222 list_for_each_entry_continue(pos, head, node)
1223 if (pos->offset >= 0)
1224 return pos;
1225
1226 return NULL;
1227 }
1228
annotate__address_color(struct block_range * br)1229 static const char *annotate__address_color(struct block_range *br)
1230 {
1231 double cov = block_range__coverage(br);
1232
1233 if (cov >= 0) {
1234 /* mark red for >75% coverage */
1235 if (cov > 0.75)
1236 return PERF_COLOR_RED;
1237
1238 /* mark dull for <1% coverage */
1239 if (cov < 0.01)
1240 return PERF_COLOR_NORMAL;
1241 }
1242
1243 return PERF_COLOR_MAGENTA;
1244 }
1245
annotate__asm_color(struct block_range * br)1246 static const char *annotate__asm_color(struct block_range *br)
1247 {
1248 double cov = block_range__coverage(br);
1249
1250 if (cov >= 0) {
1251 /* mark dull for <1% coverage */
1252 if (cov < 0.01)
1253 return PERF_COLOR_NORMAL;
1254 }
1255
1256 return PERF_COLOR_BLUE;
1257 }
1258
annotate__branch_printf(struct block_range * br,u64 addr)1259 static void annotate__branch_printf(struct block_range *br, u64 addr)
1260 {
1261 bool emit_comment = true;
1262
1263 if (!br)
1264 return;
1265
1266 #if 1
1267 if (br->is_target && br->start == addr) {
1268 struct block_range *branch = br;
1269 double p;
1270
1271 /*
1272 * Find matching branch to our target.
1273 */
1274 while (!branch->is_branch)
1275 branch = block_range__next(branch);
1276
1277 p = 100 *(double)br->entry / branch->coverage;
1278
1279 if (p > 0.1) {
1280 if (emit_comment) {
1281 emit_comment = false;
1282 printf("\t#");
1283 }
1284
1285 /*
1286 * The percentage of coverage joined at this target in relation
1287 * to the next branch.
1288 */
1289 printf(" +%.2f%%", p);
1290 }
1291 }
1292 #endif
1293 if (br->is_branch && br->end == addr) {
1294 double p = 100*(double)br->taken / br->coverage;
1295
1296 if (p > 0.1) {
1297 if (emit_comment) {
1298 emit_comment = false;
1299 printf("\t#");
1300 }
1301
1302 /*
1303 * The percentage of coverage leaving at this branch, and
1304 * its prediction ratio.
1305 */
1306 printf(" -%.2f%% (p:%.2f%%)", p, 100*(double)br->pred / br->taken);
1307 }
1308 }
1309 }
1310
disasm_line__print(struct disasm_line * dl,u64 start,int addr_fmt_width)1311 static int disasm_line__print(struct disasm_line *dl, u64 start, int addr_fmt_width)
1312 {
1313 s64 offset = dl->al.offset;
1314 const u64 addr = start + offset;
1315 struct block_range *br;
1316
1317 br = block_range__find(addr);
1318 color_fprintf(stdout, annotate__address_color(br), " %*" PRIx64 ":", addr_fmt_width, addr);
1319 color_fprintf(stdout, annotate__asm_color(br), "%s", dl->al.line);
1320 annotate__branch_printf(br, addr);
1321 return 0;
1322 }
1323
1324 static int
annotation_line__print(struct annotation_line * al,struct symbol * sym,u64 start,struct perf_evsel * evsel,u64 len,int min_pcnt,int printed,int max_lines,struct annotation_line * queue,int addr_fmt_width,int percent_type)1325 annotation_line__print(struct annotation_line *al, struct symbol *sym, u64 start,
1326 struct perf_evsel *evsel, u64 len, int min_pcnt, int printed,
1327 int max_lines, struct annotation_line *queue, int addr_fmt_width,
1328 int percent_type)
1329 {
1330 struct disasm_line *dl = container_of(al, struct disasm_line, al);
1331 static const char *prev_line;
1332 static const char *prev_color;
1333
1334 if (al->offset != -1) {
1335 double max_percent = 0.0;
1336 int i, nr_percent = 1;
1337 const char *color;
1338 struct annotation *notes = symbol__annotation(sym);
1339
1340 for (i = 0; i < al->data_nr; i++) {
1341 double percent;
1342
1343 percent = annotation_data__percent(&al->data[i],
1344 percent_type);
1345
1346 if (percent > max_percent)
1347 max_percent = percent;
1348 }
1349
1350 if (al->data_nr > nr_percent)
1351 nr_percent = al->data_nr;
1352
1353 if (max_percent < min_pcnt)
1354 return -1;
1355
1356 if (max_lines && printed >= max_lines)
1357 return 1;
1358
1359 if (queue != NULL) {
1360 list_for_each_entry_from(queue, ¬es->src->source, node) {
1361 if (queue == al)
1362 break;
1363 annotation_line__print(queue, sym, start, evsel, len,
1364 0, 0, 1, NULL, addr_fmt_width,
1365 percent_type);
1366 }
1367 }
1368
1369 color = get_percent_color(max_percent);
1370
1371 /*
1372 * Also color the filename and line if needed, with
1373 * the same color than the percentage. Don't print it
1374 * twice for close colored addr with the same filename:line
1375 */
1376 if (al->path) {
1377 if (!prev_line || strcmp(prev_line, al->path)
1378 || color != prev_color) {
1379 color_fprintf(stdout, color, " %s", al->path);
1380 prev_line = al->path;
1381 prev_color = color;
1382 }
1383 }
1384
1385 for (i = 0; i < nr_percent; i++) {
1386 struct annotation_data *data = &al->data[i];
1387 double percent;
1388
1389 percent = annotation_data__percent(data, percent_type);
1390 color = get_percent_color(percent);
1391
1392 if (symbol_conf.show_total_period)
1393 color_fprintf(stdout, color, " %11" PRIu64,
1394 data->he.period);
1395 else if (symbol_conf.show_nr_samples)
1396 color_fprintf(stdout, color, " %7" PRIu64,
1397 data->he.nr_samples);
1398 else
1399 color_fprintf(stdout, color, " %7.2f", percent);
1400 }
1401
1402 printf(" : ");
1403
1404 disasm_line__print(dl, start, addr_fmt_width);
1405 printf("\n");
1406 } else if (max_lines && printed >= max_lines)
1407 return 1;
1408 else {
1409 int width = symbol_conf.show_total_period ? 12 : 8;
1410
1411 if (queue)
1412 return -1;
1413
1414 if (perf_evsel__is_group_event(evsel))
1415 width *= evsel->nr_members;
1416
1417 if (!*al->line)
1418 printf(" %*s:\n", width, " ");
1419 else
1420 printf(" %*s: %*s %s\n", width, " ", addr_fmt_width, " ", al->line);
1421 }
1422
1423 return 0;
1424 }
1425
1426 /*
1427 * symbol__parse_objdump_line() parses objdump output (with -d --no-show-raw)
1428 * which looks like following
1429 *
1430 * 0000000000415500 <_init>:
1431 * 415500: sub $0x8,%rsp
1432 * 415504: mov 0x2f5ad5(%rip),%rax # 70afe0 <_DYNAMIC+0x2f8>
1433 * 41550b: test %rax,%rax
1434 * 41550e: je 415515 <_init+0x15>
1435 * 415510: callq 416e70 <__gmon_start__@plt>
1436 * 415515: add $0x8,%rsp
1437 * 415519: retq
1438 *
1439 * it will be parsed and saved into struct disasm_line as
1440 * <offset> <name> <ops.raw>
1441 *
1442 * The offset will be a relative offset from the start of the symbol and -1
1443 * means that it's not a disassembly line so should be treated differently.
1444 * The ops.raw part will be parsed further according to type of the instruction.
1445 */
symbol__parse_objdump_line(struct symbol * sym,FILE * file,struct annotate_args * args,int * line_nr)1446 static int symbol__parse_objdump_line(struct symbol *sym, FILE *file,
1447 struct annotate_args *args,
1448 int *line_nr)
1449 {
1450 struct map *map = args->ms.map;
1451 struct annotation *notes = symbol__annotation(sym);
1452 struct disasm_line *dl;
1453 char *line = NULL, *parsed_line, *tmp, *tmp2;
1454 size_t line_len;
1455 s64 line_ip, offset = -1;
1456 regmatch_t match[2];
1457
1458 if (getline(&line, &line_len, file) < 0)
1459 return -1;
1460
1461 if (!line)
1462 return -1;
1463
1464 line_ip = -1;
1465 parsed_line = rtrim(line);
1466
1467 /* /filename:linenr ? Save line number and ignore. */
1468 if (regexec(&file_lineno, parsed_line, 2, match, 0) == 0) {
1469 *line_nr = atoi(parsed_line + match[1].rm_so);
1470 return 0;
1471 }
1472
1473 tmp = ltrim(parsed_line);
1474 if (*tmp) {
1475 /*
1476 * Parse hexa addresses followed by ':'
1477 */
1478 line_ip = strtoull(tmp, &tmp2, 16);
1479 if (*tmp2 != ':' || tmp == tmp2 || tmp2[1] == '\0')
1480 line_ip = -1;
1481 }
1482
1483 if (line_ip != -1) {
1484 u64 start = map__rip_2objdump(map, sym->start),
1485 end = map__rip_2objdump(map, sym->end);
1486
1487 offset = line_ip - start;
1488 if ((u64)line_ip < start || (u64)line_ip >= end)
1489 offset = -1;
1490 else
1491 parsed_line = tmp2 + 1;
1492 }
1493
1494 args->offset = offset;
1495 args->line = parsed_line;
1496 args->line_nr = *line_nr;
1497 args->ms.sym = sym;
1498
1499 dl = disasm_line__new(args);
1500 free(line);
1501 (*line_nr)++;
1502
1503 if (dl == NULL)
1504 return -1;
1505
1506 if (!disasm_line__has_local_offset(dl)) {
1507 dl->ops.target.offset = dl->ops.target.addr -
1508 map__rip_2objdump(map, sym->start);
1509 dl->ops.target.offset_avail = true;
1510 }
1511
1512 /* kcore has no symbols, so add the call target symbol */
1513 if (dl->ins.ops && ins__is_call(&dl->ins) && !dl->ops.target.sym) {
1514 struct addr_map_symbol target = {
1515 .map = map,
1516 .addr = dl->ops.target.addr,
1517 };
1518
1519 if (!map_groups__find_ams(&target) &&
1520 target.sym->start == target.al_addr)
1521 dl->ops.target.sym = target.sym;
1522 }
1523
1524 annotation_line__add(&dl->al, ¬es->src->source);
1525
1526 return 0;
1527 }
1528
symbol__init_regexpr(void)1529 static __attribute__((constructor)) void symbol__init_regexpr(void)
1530 {
1531 regcomp(&file_lineno, "^/[^:]+:([0-9]+)", REG_EXTENDED);
1532 }
1533
delete_last_nop(struct symbol * sym)1534 static void delete_last_nop(struct symbol *sym)
1535 {
1536 struct annotation *notes = symbol__annotation(sym);
1537 struct list_head *list = ¬es->src->source;
1538 struct disasm_line *dl;
1539
1540 while (!list_empty(list)) {
1541 dl = list_entry(list->prev, struct disasm_line, al.node);
1542
1543 if (dl->ins.ops) {
1544 if (dl->ins.ops != &nop_ops)
1545 return;
1546 } else {
1547 if (!strstr(dl->al.line, " nop ") &&
1548 !strstr(dl->al.line, " nopl ") &&
1549 !strstr(dl->al.line, " nopw "))
1550 return;
1551 }
1552
1553 list_del(&dl->al.node);
1554 disasm_line__free(dl);
1555 }
1556 }
1557
symbol__strerror_disassemble(struct symbol * sym __maybe_unused,struct map * map,int errnum,char * buf,size_t buflen)1558 int symbol__strerror_disassemble(struct symbol *sym __maybe_unused, struct map *map,
1559 int errnum, char *buf, size_t buflen)
1560 {
1561 struct dso *dso = map->dso;
1562
1563 BUG_ON(buflen == 0);
1564
1565 if (errnum >= 0) {
1566 str_error_r(errnum, buf, buflen);
1567 return 0;
1568 }
1569
1570 switch (errnum) {
1571 case SYMBOL_ANNOTATE_ERRNO__NO_VMLINUX: {
1572 char bf[SBUILD_ID_SIZE + 15] = " with build id ";
1573 char *build_id_msg = NULL;
1574
1575 if (dso->has_build_id) {
1576 build_id__sprintf(dso->build_id,
1577 sizeof(dso->build_id), bf + 15);
1578 build_id_msg = bf;
1579 }
1580 scnprintf(buf, buflen,
1581 "No vmlinux file%s\nwas found in the path.\n\n"
1582 "Note that annotation using /proc/kcore requires CAP_SYS_RAWIO capability.\n\n"
1583 "Please use:\n\n"
1584 " perf buildid-cache -vu vmlinux\n\n"
1585 "or:\n\n"
1586 " --vmlinux vmlinux\n", build_id_msg ?: "");
1587 }
1588 break;
1589 default:
1590 scnprintf(buf, buflen, "Internal error: Invalid %d error code\n", errnum);
1591 break;
1592 }
1593
1594 return 0;
1595 }
1596
dso__disassemble_filename(struct dso * dso,char * filename,size_t filename_size)1597 static int dso__disassemble_filename(struct dso *dso, char *filename, size_t filename_size)
1598 {
1599 char linkname[PATH_MAX];
1600 char *build_id_filename;
1601 char *build_id_path = NULL;
1602 char *pos;
1603
1604 if (dso->symtab_type == DSO_BINARY_TYPE__KALLSYMS &&
1605 !dso__is_kcore(dso))
1606 return SYMBOL_ANNOTATE_ERRNO__NO_VMLINUX;
1607
1608 build_id_filename = dso__build_id_filename(dso, NULL, 0, false);
1609 if (build_id_filename) {
1610 __symbol__join_symfs(filename, filename_size, build_id_filename);
1611 free(build_id_filename);
1612 } else {
1613 if (dso->has_build_id)
1614 return ENOMEM;
1615 goto fallback;
1616 }
1617
1618 build_id_path = strdup(filename);
1619 if (!build_id_path)
1620 return -1;
1621
1622 /*
1623 * old style build-id cache has name of XX/XXXXXXX.. while
1624 * new style has XX/XXXXXXX../{elf,kallsyms,vdso}.
1625 * extract the build-id part of dirname in the new style only.
1626 */
1627 pos = strrchr(build_id_path, '/');
1628 if (pos && strlen(pos) < SBUILD_ID_SIZE - 2)
1629 dirname(build_id_path);
1630
1631 if (dso__is_kcore(dso) ||
1632 readlink(build_id_path, linkname, sizeof(linkname)) < 0 ||
1633 strstr(linkname, DSO__NAME_KALLSYMS) ||
1634 access(filename, R_OK)) {
1635 fallback:
1636 /*
1637 * If we don't have build-ids or the build-id file isn't in the
1638 * cache, or is just a kallsyms file, well, lets hope that this
1639 * DSO is the same as when 'perf record' ran.
1640 */
1641 __symbol__join_symfs(filename, filename_size, dso->long_name);
1642 }
1643
1644 free(build_id_path);
1645 return 0;
1646 }
1647
symbol__disassemble(struct symbol * sym,struct annotate_args * args)1648 static int symbol__disassemble(struct symbol *sym, struct annotate_args *args)
1649 {
1650 struct annotation_options *opts = args->options;
1651 struct map *map = args->ms.map;
1652 struct dso *dso = map->dso;
1653 char *command;
1654 FILE *file;
1655 char symfs_filename[PATH_MAX];
1656 struct kcore_extract kce;
1657 bool delete_extract = false;
1658 bool decomp = false;
1659 int stdout_fd[2];
1660 int lineno = 0;
1661 int nline;
1662 pid_t pid;
1663 int err = dso__disassemble_filename(dso, symfs_filename, sizeof(symfs_filename));
1664
1665 if (err)
1666 return err;
1667
1668 pr_debug("%s: filename=%s, sym=%s, start=%#" PRIx64 ", end=%#" PRIx64 "\n", __func__,
1669 symfs_filename, sym->name, map->unmap_ip(map, sym->start),
1670 map->unmap_ip(map, sym->end));
1671
1672 pr_debug("annotating [%p] %30s : [%p] %30s\n",
1673 dso, dso->long_name, sym, sym->name);
1674
1675 if (dso__is_kcore(dso)) {
1676 kce.kcore_filename = symfs_filename;
1677 kce.addr = map__rip_2objdump(map, sym->start);
1678 kce.offs = sym->start;
1679 kce.len = sym->end - sym->start;
1680 if (!kcore_extract__create(&kce)) {
1681 delete_extract = true;
1682 strlcpy(symfs_filename, kce.extract_filename,
1683 sizeof(symfs_filename));
1684 }
1685 } else if (dso__needs_decompress(dso)) {
1686 char tmp[KMOD_DECOMP_LEN];
1687
1688 if (dso__decompress_kmodule_path(dso, symfs_filename,
1689 tmp, sizeof(tmp)) < 0)
1690 goto out;
1691
1692 decomp = true;
1693 strcpy(symfs_filename, tmp);
1694 }
1695
1696 err = asprintf(&command,
1697 "%s %s%s --start-address=0x%016" PRIx64
1698 " --stop-address=0x%016" PRIx64
1699 " -l -d %s %s -C \"%s\" 2>/dev/null|grep -v \"%s:\"|expand",
1700 opts->objdump_path ?: "objdump",
1701 opts->disassembler_style ? "-M " : "",
1702 opts->disassembler_style ?: "",
1703 map__rip_2objdump(map, sym->start),
1704 map__rip_2objdump(map, sym->end),
1705 opts->show_asm_raw ? "" : "--no-show-raw",
1706 opts->annotate_src ? "-S" : "",
1707 symfs_filename, symfs_filename);
1708
1709 if (err < 0) {
1710 pr_err("Failure allocating memory for the command to run\n");
1711 goto out_remove_tmp;
1712 }
1713
1714 pr_debug("Executing: %s\n", command);
1715
1716 err = -1;
1717 if (pipe(stdout_fd) < 0) {
1718 pr_err("Failure creating the pipe to run %s\n", command);
1719 goto out_free_command;
1720 }
1721
1722 pid = fork();
1723 if (pid < 0) {
1724 pr_err("Failure forking to run %s\n", command);
1725 goto out_close_stdout;
1726 }
1727
1728 if (pid == 0) {
1729 close(stdout_fd[0]);
1730 dup2(stdout_fd[1], 1);
1731 close(stdout_fd[1]);
1732 execl("/bin/sh", "sh", "-c", command, NULL);
1733 perror(command);
1734 exit(-1);
1735 }
1736
1737 close(stdout_fd[1]);
1738
1739 file = fdopen(stdout_fd[0], "r");
1740 if (!file) {
1741 pr_err("Failure creating FILE stream for %s\n", command);
1742 /*
1743 * If we were using debug info should retry with
1744 * original binary.
1745 */
1746 goto out_free_command;
1747 }
1748
1749 nline = 0;
1750 while (!feof(file)) {
1751 /*
1752 * The source code line number (lineno) needs to be kept in
1753 * accross calls to symbol__parse_objdump_line(), so that it
1754 * can associate it with the instructions till the next one.
1755 * See disasm_line__new() and struct disasm_line::line_nr.
1756 */
1757 if (symbol__parse_objdump_line(sym, file, args, &lineno) < 0)
1758 break;
1759 nline++;
1760 }
1761
1762 if (nline == 0)
1763 pr_err("No output from %s\n", command);
1764
1765 /*
1766 * kallsyms does not have symbol sizes so there may a nop at the end.
1767 * Remove it.
1768 */
1769 if (dso__is_kcore(dso))
1770 delete_last_nop(sym);
1771
1772 fclose(file);
1773 err = 0;
1774 out_free_command:
1775 free(command);
1776 out_remove_tmp:
1777 close(stdout_fd[0]);
1778
1779 if (decomp)
1780 unlink(symfs_filename);
1781
1782 if (delete_extract)
1783 kcore_extract__delete(&kce);
1784 out:
1785 return err;
1786
1787 out_close_stdout:
1788 close(stdout_fd[1]);
1789 goto out_free_command;
1790 }
1791
calc_percent(struct sym_hist * sym_hist,struct hists * hists,struct annotation_data * data,s64 offset,s64 end)1792 static void calc_percent(struct sym_hist *sym_hist,
1793 struct hists *hists,
1794 struct annotation_data *data,
1795 s64 offset, s64 end)
1796 {
1797 unsigned int hits = 0;
1798 u64 period = 0;
1799
1800 while (offset < end) {
1801 hits += sym_hist->addr[offset].nr_samples;
1802 period += sym_hist->addr[offset].period;
1803 ++offset;
1804 }
1805
1806 if (sym_hist->nr_samples) {
1807 data->he.period = period;
1808 data->he.nr_samples = hits;
1809 data->percent[PERCENT_HITS_LOCAL] = 100.0 * hits / sym_hist->nr_samples;
1810 }
1811
1812 if (hists->stats.nr_non_filtered_samples)
1813 data->percent[PERCENT_HITS_GLOBAL] = 100.0 * hits / hists->stats.nr_non_filtered_samples;
1814
1815 if (sym_hist->period)
1816 data->percent[PERCENT_PERIOD_LOCAL] = 100.0 * period / sym_hist->period;
1817
1818 if (hists->stats.total_period)
1819 data->percent[PERCENT_PERIOD_GLOBAL] = 100.0 * period / hists->stats.total_period;
1820 }
1821
annotation__calc_percent(struct annotation * notes,struct perf_evsel * leader,s64 len)1822 static void annotation__calc_percent(struct annotation *notes,
1823 struct perf_evsel *leader, s64 len)
1824 {
1825 struct annotation_line *al, *next;
1826 struct perf_evsel *evsel;
1827
1828 list_for_each_entry(al, ¬es->src->source, node) {
1829 s64 end;
1830 int i = 0;
1831
1832 if (al->offset == -1)
1833 continue;
1834
1835 next = annotation_line__next(al, ¬es->src->source);
1836 end = next ? next->offset : len;
1837
1838 for_each_group_evsel(evsel, leader) {
1839 struct hists *hists = evsel__hists(evsel);
1840 struct annotation_data *data;
1841 struct sym_hist *sym_hist;
1842
1843 BUG_ON(i >= al->data_nr);
1844
1845 sym_hist = annotation__histogram(notes, evsel->idx);
1846 data = &al->data[i++];
1847
1848 calc_percent(sym_hist, hists, data, al->offset, end);
1849 }
1850 }
1851 }
1852
symbol__calc_percent(struct symbol * sym,struct perf_evsel * evsel)1853 void symbol__calc_percent(struct symbol *sym, struct perf_evsel *evsel)
1854 {
1855 struct annotation *notes = symbol__annotation(sym);
1856
1857 annotation__calc_percent(notes, evsel, symbol__size(sym));
1858 }
1859
symbol__annotate(struct symbol * sym,struct map * map,struct perf_evsel * evsel,size_t privsize,struct annotation_options * options,struct arch ** parch)1860 int symbol__annotate(struct symbol *sym, struct map *map,
1861 struct perf_evsel *evsel, size_t privsize,
1862 struct annotation_options *options,
1863 struct arch **parch)
1864 {
1865 struct annotate_args args = {
1866 .privsize = privsize,
1867 .evsel = evsel,
1868 .options = options,
1869 };
1870 struct perf_env *env = perf_evsel__env(evsel);
1871 const char *arch_name = perf_env__arch(env);
1872 struct arch *arch;
1873 int err;
1874
1875 if (!arch_name)
1876 return -1;
1877
1878 args.arch = arch = arch__find(arch_name);
1879 if (arch == NULL)
1880 return -ENOTSUP;
1881
1882 if (parch)
1883 *parch = arch;
1884
1885 if (arch->init) {
1886 err = arch->init(arch, env ? env->cpuid : NULL);
1887 if (err) {
1888 pr_err("%s: failed to initialize %s arch priv area\n", __func__, arch->name);
1889 return err;
1890 }
1891 }
1892
1893 args.ms.map = map;
1894 args.ms.sym = sym;
1895
1896 return symbol__disassemble(sym, &args);
1897 }
1898
insert_source_line(struct rb_root * root,struct annotation_line * al,struct annotation_options * opts)1899 static void insert_source_line(struct rb_root *root, struct annotation_line *al,
1900 struct annotation_options *opts)
1901 {
1902 struct annotation_line *iter;
1903 struct rb_node **p = &root->rb_node;
1904 struct rb_node *parent = NULL;
1905 int i, ret;
1906
1907 while (*p != NULL) {
1908 parent = *p;
1909 iter = rb_entry(parent, struct annotation_line, rb_node);
1910
1911 ret = strcmp(iter->path, al->path);
1912 if (ret == 0) {
1913 for (i = 0; i < al->data_nr; i++) {
1914 iter->data[i].percent_sum += annotation_data__percent(&al->data[i],
1915 opts->percent_type);
1916 }
1917 return;
1918 }
1919
1920 if (ret < 0)
1921 p = &(*p)->rb_left;
1922 else
1923 p = &(*p)->rb_right;
1924 }
1925
1926 for (i = 0; i < al->data_nr; i++) {
1927 al->data[i].percent_sum = annotation_data__percent(&al->data[i],
1928 opts->percent_type);
1929 }
1930
1931 rb_link_node(&al->rb_node, parent, p);
1932 rb_insert_color(&al->rb_node, root);
1933 }
1934
cmp_source_line(struct annotation_line * a,struct annotation_line * b)1935 static int cmp_source_line(struct annotation_line *a, struct annotation_line *b)
1936 {
1937 int i;
1938
1939 for (i = 0; i < a->data_nr; i++) {
1940 if (a->data[i].percent_sum == b->data[i].percent_sum)
1941 continue;
1942 return a->data[i].percent_sum > b->data[i].percent_sum;
1943 }
1944
1945 return 0;
1946 }
1947
__resort_source_line(struct rb_root * root,struct annotation_line * al)1948 static void __resort_source_line(struct rb_root *root, struct annotation_line *al)
1949 {
1950 struct annotation_line *iter;
1951 struct rb_node **p = &root->rb_node;
1952 struct rb_node *parent = NULL;
1953
1954 while (*p != NULL) {
1955 parent = *p;
1956 iter = rb_entry(parent, struct annotation_line, rb_node);
1957
1958 if (cmp_source_line(al, iter))
1959 p = &(*p)->rb_left;
1960 else
1961 p = &(*p)->rb_right;
1962 }
1963
1964 rb_link_node(&al->rb_node, parent, p);
1965 rb_insert_color(&al->rb_node, root);
1966 }
1967
resort_source_line(struct rb_root * dest_root,struct rb_root * src_root)1968 static void resort_source_line(struct rb_root *dest_root, struct rb_root *src_root)
1969 {
1970 struct annotation_line *al;
1971 struct rb_node *node;
1972
1973 node = rb_first(src_root);
1974 while (node) {
1975 struct rb_node *next;
1976
1977 al = rb_entry(node, struct annotation_line, rb_node);
1978 next = rb_next(node);
1979 rb_erase(node, src_root);
1980
1981 __resort_source_line(dest_root, al);
1982 node = next;
1983 }
1984 }
1985
print_summary(struct rb_root * root,const char * filename)1986 static void print_summary(struct rb_root *root, const char *filename)
1987 {
1988 struct annotation_line *al;
1989 struct rb_node *node;
1990
1991 printf("\nSorted summary for file %s\n", filename);
1992 printf("----------------------------------------------\n\n");
1993
1994 if (RB_EMPTY_ROOT(root)) {
1995 printf(" Nothing higher than %1.1f%%\n", MIN_GREEN);
1996 return;
1997 }
1998
1999 node = rb_first(root);
2000 while (node) {
2001 double percent, percent_max = 0.0;
2002 const char *color;
2003 char *path;
2004 int i;
2005
2006 al = rb_entry(node, struct annotation_line, rb_node);
2007 for (i = 0; i < al->data_nr; i++) {
2008 percent = al->data[i].percent_sum;
2009 color = get_percent_color(percent);
2010 color_fprintf(stdout, color, " %7.2f", percent);
2011
2012 if (percent > percent_max)
2013 percent_max = percent;
2014 }
2015
2016 path = al->path;
2017 color = get_percent_color(percent_max);
2018 color_fprintf(stdout, color, " %s\n", path);
2019
2020 node = rb_next(node);
2021 }
2022 }
2023
symbol__annotate_hits(struct symbol * sym,struct perf_evsel * evsel)2024 static void symbol__annotate_hits(struct symbol *sym, struct perf_evsel *evsel)
2025 {
2026 struct annotation *notes = symbol__annotation(sym);
2027 struct sym_hist *h = annotation__histogram(notes, evsel->idx);
2028 u64 len = symbol__size(sym), offset;
2029
2030 for (offset = 0; offset < len; ++offset)
2031 if (h->addr[offset].nr_samples != 0)
2032 printf("%*" PRIx64 ": %" PRIu64 "\n", BITS_PER_LONG / 2,
2033 sym->start + offset, h->addr[offset].nr_samples);
2034 printf("%*s: %" PRIu64 "\n", BITS_PER_LONG / 2, "h->nr_samples", h->nr_samples);
2035 }
2036
annotated_source__addr_fmt_width(struct list_head * lines,u64 start)2037 static int annotated_source__addr_fmt_width(struct list_head *lines, u64 start)
2038 {
2039 char bf[32];
2040 struct annotation_line *line;
2041
2042 list_for_each_entry_reverse(line, lines, node) {
2043 if (line->offset != -1)
2044 return scnprintf(bf, sizeof(bf), "%" PRIx64, start + line->offset);
2045 }
2046
2047 return 0;
2048 }
2049
symbol__annotate_printf(struct symbol * sym,struct map * map,struct perf_evsel * evsel,struct annotation_options * opts)2050 int symbol__annotate_printf(struct symbol *sym, struct map *map,
2051 struct perf_evsel *evsel,
2052 struct annotation_options *opts)
2053 {
2054 struct dso *dso = map->dso;
2055 char *filename;
2056 const char *d_filename;
2057 const char *evsel_name = perf_evsel__name(evsel);
2058 struct annotation *notes = symbol__annotation(sym);
2059 struct sym_hist *h = annotation__histogram(notes, evsel->idx);
2060 struct annotation_line *pos, *queue = NULL;
2061 u64 start = map__rip_2objdump(map, sym->start);
2062 int printed = 2, queue_len = 0, addr_fmt_width;
2063 int more = 0;
2064 bool context = opts->context;
2065 u64 len;
2066 int width = symbol_conf.show_total_period ? 12 : 8;
2067 int graph_dotted_len;
2068 char buf[512];
2069
2070 filename = strdup(dso->long_name);
2071 if (!filename)
2072 return -ENOMEM;
2073
2074 if (opts->full_path)
2075 d_filename = filename;
2076 else
2077 d_filename = basename(filename);
2078
2079 len = symbol__size(sym);
2080
2081 if (perf_evsel__is_group_event(evsel)) {
2082 width *= evsel->nr_members;
2083 perf_evsel__group_desc(evsel, buf, sizeof(buf));
2084 evsel_name = buf;
2085 }
2086
2087 graph_dotted_len = printf(" %-*.*s| Source code & Disassembly of %s for %s (%" PRIu64 " samples, "
2088 "percent: %s)\n",
2089 width, width, symbol_conf.show_total_period ? "Period" :
2090 symbol_conf.show_nr_samples ? "Samples" : "Percent",
2091 d_filename, evsel_name, h->nr_samples,
2092 percent_type_str(opts->percent_type));
2093
2094 printf("%-*.*s----\n",
2095 graph_dotted_len, graph_dotted_len, graph_dotted_line);
2096
2097 if (verbose > 0)
2098 symbol__annotate_hits(sym, evsel);
2099
2100 addr_fmt_width = annotated_source__addr_fmt_width(¬es->src->source, start);
2101
2102 list_for_each_entry(pos, ¬es->src->source, node) {
2103 int err;
2104
2105 if (context && queue == NULL) {
2106 queue = pos;
2107 queue_len = 0;
2108 }
2109
2110 err = annotation_line__print(pos, sym, start, evsel, len,
2111 opts->min_pcnt, printed, opts->max_lines,
2112 queue, addr_fmt_width, opts->percent_type);
2113
2114 switch (err) {
2115 case 0:
2116 ++printed;
2117 if (context) {
2118 printed += queue_len;
2119 queue = NULL;
2120 queue_len = 0;
2121 }
2122 break;
2123 case 1:
2124 /* filtered by max_lines */
2125 ++more;
2126 break;
2127 case -1:
2128 default:
2129 /*
2130 * Filtered by min_pcnt or non IP lines when
2131 * context != 0
2132 */
2133 if (!context)
2134 break;
2135 if (queue_len == context)
2136 queue = list_entry(queue->node.next, typeof(*queue), node);
2137 else
2138 ++queue_len;
2139 break;
2140 }
2141 }
2142
2143 free(filename);
2144
2145 return more;
2146 }
2147
FILE__set_percent_color(void * fp __maybe_unused,double percent __maybe_unused,bool current __maybe_unused)2148 static void FILE__set_percent_color(void *fp __maybe_unused,
2149 double percent __maybe_unused,
2150 bool current __maybe_unused)
2151 {
2152 }
2153
FILE__set_jumps_percent_color(void * fp __maybe_unused,int nr __maybe_unused,bool current __maybe_unused)2154 static int FILE__set_jumps_percent_color(void *fp __maybe_unused,
2155 int nr __maybe_unused, bool current __maybe_unused)
2156 {
2157 return 0;
2158 }
2159
FILE__set_color(void * fp __maybe_unused,int color __maybe_unused)2160 static int FILE__set_color(void *fp __maybe_unused, int color __maybe_unused)
2161 {
2162 return 0;
2163 }
2164
FILE__printf(void * fp,const char * fmt,...)2165 static void FILE__printf(void *fp, const char *fmt, ...)
2166 {
2167 va_list args;
2168
2169 va_start(args, fmt);
2170 vfprintf(fp, fmt, args);
2171 va_end(args);
2172 }
2173
FILE__write_graph(void * fp,int graph)2174 static void FILE__write_graph(void *fp, int graph)
2175 {
2176 const char *s;
2177 switch (graph) {
2178
2179 case DARROW_CHAR: s = "↓"; break;
2180 case UARROW_CHAR: s = "↑"; break;
2181 case LARROW_CHAR: s = "←"; break;
2182 case RARROW_CHAR: s = "→"; break;
2183 default: s = "?"; break;
2184 }
2185
2186 fputs(s, fp);
2187 }
2188
symbol__annotate_fprintf2(struct symbol * sym,FILE * fp,struct annotation_options * opts)2189 static int symbol__annotate_fprintf2(struct symbol *sym, FILE *fp,
2190 struct annotation_options *opts)
2191 {
2192 struct annotation *notes = symbol__annotation(sym);
2193 struct annotation_write_ops wops = {
2194 .first_line = true,
2195 .obj = fp,
2196 .set_color = FILE__set_color,
2197 .set_percent_color = FILE__set_percent_color,
2198 .set_jumps_percent_color = FILE__set_jumps_percent_color,
2199 .printf = FILE__printf,
2200 .write_graph = FILE__write_graph,
2201 };
2202 struct annotation_line *al;
2203
2204 list_for_each_entry(al, ¬es->src->source, node) {
2205 if (annotation_line__filter(al, notes))
2206 continue;
2207 annotation_line__write(al, notes, &wops, opts);
2208 fputc('\n', fp);
2209 wops.first_line = false;
2210 }
2211
2212 return 0;
2213 }
2214
map_symbol__annotation_dump(struct map_symbol * ms,struct perf_evsel * evsel,struct annotation_options * opts)2215 int map_symbol__annotation_dump(struct map_symbol *ms, struct perf_evsel *evsel,
2216 struct annotation_options *opts)
2217 {
2218 const char *ev_name = perf_evsel__name(evsel);
2219 char buf[1024];
2220 char *filename;
2221 int err = -1;
2222 FILE *fp;
2223
2224 if (asprintf(&filename, "%s.annotation", ms->sym->name) < 0)
2225 return -1;
2226
2227 fp = fopen(filename, "w");
2228 if (fp == NULL)
2229 goto out_free_filename;
2230
2231 if (perf_evsel__is_group_event(evsel)) {
2232 perf_evsel__group_desc(evsel, buf, sizeof(buf));
2233 ev_name = buf;
2234 }
2235
2236 fprintf(fp, "%s() %s\nEvent: %s\n\n",
2237 ms->sym->name, ms->map->dso->long_name, ev_name);
2238 symbol__annotate_fprintf2(ms->sym, fp, opts);
2239
2240 fclose(fp);
2241 err = 0;
2242 out_free_filename:
2243 free(filename);
2244 return err;
2245 }
2246
symbol__annotate_zero_histogram(struct symbol * sym,int evidx)2247 void symbol__annotate_zero_histogram(struct symbol *sym, int evidx)
2248 {
2249 struct annotation *notes = symbol__annotation(sym);
2250 struct sym_hist *h = annotation__histogram(notes, evidx);
2251
2252 memset(h, 0, notes->src->sizeof_sym_hist);
2253 }
2254
symbol__annotate_decay_histogram(struct symbol * sym,int evidx)2255 void symbol__annotate_decay_histogram(struct symbol *sym, int evidx)
2256 {
2257 struct annotation *notes = symbol__annotation(sym);
2258 struct sym_hist *h = annotation__histogram(notes, evidx);
2259 int len = symbol__size(sym), offset;
2260
2261 h->nr_samples = 0;
2262 for (offset = 0; offset < len; ++offset) {
2263 h->addr[offset].nr_samples = h->addr[offset].nr_samples * 7 / 8;
2264 h->nr_samples += h->addr[offset].nr_samples;
2265 }
2266 }
2267
annotated_source__purge(struct annotated_source * as)2268 void annotated_source__purge(struct annotated_source *as)
2269 {
2270 struct annotation_line *al, *n;
2271
2272 list_for_each_entry_safe(al, n, &as->source, node) {
2273 list_del(&al->node);
2274 disasm_line__free(disasm_line(al));
2275 }
2276 }
2277
disasm_line__fprintf(struct disasm_line * dl,FILE * fp)2278 static size_t disasm_line__fprintf(struct disasm_line *dl, FILE *fp)
2279 {
2280 size_t printed;
2281
2282 if (dl->al.offset == -1)
2283 return fprintf(fp, "%s\n", dl->al.line);
2284
2285 printed = fprintf(fp, "%#" PRIx64 " %s", dl->al.offset, dl->ins.name);
2286
2287 if (dl->ops.raw[0] != '\0') {
2288 printed += fprintf(fp, "%.*s %s\n", 6 - (int)printed, " ",
2289 dl->ops.raw);
2290 }
2291
2292 return printed + fprintf(fp, "\n");
2293 }
2294
disasm__fprintf(struct list_head * head,FILE * fp)2295 size_t disasm__fprintf(struct list_head *head, FILE *fp)
2296 {
2297 struct disasm_line *pos;
2298 size_t printed = 0;
2299
2300 list_for_each_entry(pos, head, al.node)
2301 printed += disasm_line__fprintf(pos, fp);
2302
2303 return printed;
2304 }
2305
disasm_line__is_valid_local_jump(struct disasm_line * dl,struct symbol * sym)2306 bool disasm_line__is_valid_local_jump(struct disasm_line *dl, struct symbol *sym)
2307 {
2308 if (!dl || !dl->ins.ops || !ins__is_jump(&dl->ins) ||
2309 !disasm_line__has_local_offset(dl) || dl->ops.target.offset < 0 ||
2310 dl->ops.target.offset >= (s64)symbol__size(sym))
2311 return false;
2312
2313 return true;
2314 }
2315
annotation__mark_jump_targets(struct annotation * notes,struct symbol * sym)2316 void annotation__mark_jump_targets(struct annotation *notes, struct symbol *sym)
2317 {
2318 u64 offset, size = symbol__size(sym);
2319
2320 /* PLT symbols contain external offsets */
2321 if (strstr(sym->name, "@plt"))
2322 return;
2323
2324 for (offset = 0; offset < size; ++offset) {
2325 struct annotation_line *al = notes->offsets[offset];
2326 struct disasm_line *dl;
2327
2328 dl = disasm_line(al);
2329
2330 if (!disasm_line__is_valid_local_jump(dl, sym))
2331 continue;
2332
2333 al = notes->offsets[dl->ops.target.offset];
2334
2335 /*
2336 * FIXME: Oops, no jump target? Buggy disassembler? Or do we
2337 * have to adjust to the previous offset?
2338 */
2339 if (al == NULL)
2340 continue;
2341
2342 if (++al->jump_sources > notes->max_jump_sources)
2343 notes->max_jump_sources = al->jump_sources;
2344
2345 ++notes->nr_jumps;
2346 }
2347 }
2348
annotation__set_offsets(struct annotation * notes,s64 size)2349 void annotation__set_offsets(struct annotation *notes, s64 size)
2350 {
2351 struct annotation_line *al;
2352
2353 notes->max_line_len = 0;
2354
2355 list_for_each_entry(al, ¬es->src->source, node) {
2356 size_t line_len = strlen(al->line);
2357
2358 if (notes->max_line_len < line_len)
2359 notes->max_line_len = line_len;
2360 al->idx = notes->nr_entries++;
2361 if (al->offset != -1) {
2362 al->idx_asm = notes->nr_asm_entries++;
2363 /*
2364 * FIXME: short term bandaid to cope with assembly
2365 * routines that comes with labels in the same column
2366 * as the address in objdump, sigh.
2367 *
2368 * E.g. copy_user_generic_unrolled
2369 */
2370 if (al->offset < size)
2371 notes->offsets[al->offset] = al;
2372 } else
2373 al->idx_asm = -1;
2374 }
2375 }
2376
width_jumps(int n)2377 static inline int width_jumps(int n)
2378 {
2379 if (n >= 100)
2380 return 5;
2381 if (n / 10)
2382 return 2;
2383 return 1;
2384 }
2385
annotation__init_column_widths(struct annotation * notes,struct symbol * sym)2386 void annotation__init_column_widths(struct annotation *notes, struct symbol *sym)
2387 {
2388 notes->widths.addr = notes->widths.target =
2389 notes->widths.min_addr = hex_width(symbol__size(sym));
2390 notes->widths.max_addr = hex_width(sym->end);
2391 notes->widths.jumps = width_jumps(notes->max_jump_sources);
2392 }
2393
annotation__update_column_widths(struct annotation * notes)2394 void annotation__update_column_widths(struct annotation *notes)
2395 {
2396 if (notes->options->use_offset)
2397 notes->widths.target = notes->widths.min_addr;
2398 else
2399 notes->widths.target = notes->widths.max_addr;
2400
2401 notes->widths.addr = notes->widths.target;
2402
2403 if (notes->options->show_nr_jumps)
2404 notes->widths.addr += notes->widths.jumps + 1;
2405 }
2406
annotation__calc_lines(struct annotation * notes,struct map * map,struct rb_root * root,struct annotation_options * opts)2407 static void annotation__calc_lines(struct annotation *notes, struct map *map,
2408 struct rb_root *root,
2409 struct annotation_options *opts)
2410 {
2411 struct annotation_line *al;
2412 struct rb_root tmp_root = RB_ROOT;
2413
2414 list_for_each_entry(al, ¬es->src->source, node) {
2415 double percent_max = 0.0;
2416 int i;
2417
2418 for (i = 0; i < al->data_nr; i++) {
2419 double percent;
2420
2421 percent = annotation_data__percent(&al->data[i],
2422 opts->percent_type);
2423
2424 if (percent > percent_max)
2425 percent_max = percent;
2426 }
2427
2428 if (percent_max <= 0.5)
2429 continue;
2430
2431 al->path = get_srcline(map->dso, notes->start + al->offset, NULL,
2432 false, true, notes->start + al->offset);
2433 insert_source_line(&tmp_root, al, opts);
2434 }
2435
2436 resort_source_line(root, &tmp_root);
2437 }
2438
symbol__calc_lines(struct symbol * sym,struct map * map,struct rb_root * root,struct annotation_options * opts)2439 static void symbol__calc_lines(struct symbol *sym, struct map *map,
2440 struct rb_root *root,
2441 struct annotation_options *opts)
2442 {
2443 struct annotation *notes = symbol__annotation(sym);
2444
2445 annotation__calc_lines(notes, map, root, opts);
2446 }
2447
symbol__tty_annotate2(struct symbol * sym,struct map * map,struct perf_evsel * evsel,struct annotation_options * opts)2448 int symbol__tty_annotate2(struct symbol *sym, struct map *map,
2449 struct perf_evsel *evsel,
2450 struct annotation_options *opts)
2451 {
2452 struct dso *dso = map->dso;
2453 struct rb_root source_line = RB_ROOT;
2454 struct hists *hists = evsel__hists(evsel);
2455 char buf[1024];
2456
2457 if (symbol__annotate2(sym, map, evsel, opts, NULL) < 0)
2458 return -1;
2459
2460 if (opts->print_lines) {
2461 srcline_full_filename = opts->full_path;
2462 symbol__calc_lines(sym, map, &source_line, opts);
2463 print_summary(&source_line, dso->long_name);
2464 }
2465
2466 hists__scnprintf_title(hists, buf, sizeof(buf));
2467 fprintf(stdout, "%s, [percent: %s]\n%s() %s\n",
2468 buf, percent_type_str(opts->percent_type), sym->name, dso->long_name);
2469 symbol__annotate_fprintf2(sym, stdout, opts);
2470
2471 annotated_source__purge(symbol__annotation(sym)->src);
2472
2473 return 0;
2474 }
2475
symbol__tty_annotate(struct symbol * sym,struct map * map,struct perf_evsel * evsel,struct annotation_options * opts)2476 int symbol__tty_annotate(struct symbol *sym, struct map *map,
2477 struct perf_evsel *evsel,
2478 struct annotation_options *opts)
2479 {
2480 struct dso *dso = map->dso;
2481 struct rb_root source_line = RB_ROOT;
2482
2483 if (symbol__annotate(sym, map, evsel, 0, opts, NULL) < 0)
2484 return -1;
2485
2486 symbol__calc_percent(sym, evsel);
2487
2488 if (opts->print_lines) {
2489 srcline_full_filename = opts->full_path;
2490 symbol__calc_lines(sym, map, &source_line, opts);
2491 print_summary(&source_line, dso->long_name);
2492 }
2493
2494 symbol__annotate_printf(sym, map, evsel, opts);
2495
2496 annotated_source__purge(symbol__annotation(sym)->src);
2497
2498 return 0;
2499 }
2500
ui__has_annotation(void)2501 bool ui__has_annotation(void)
2502 {
2503 return use_browser == 1 && perf_hpp_list.sym;
2504 }
2505
2506
annotation_line__max_percent(struct annotation_line * al,struct annotation * notes,unsigned int percent_type)2507 static double annotation_line__max_percent(struct annotation_line *al,
2508 struct annotation *notes,
2509 unsigned int percent_type)
2510 {
2511 double percent_max = 0.0;
2512 int i;
2513
2514 for (i = 0; i < notes->nr_events; i++) {
2515 double percent;
2516
2517 percent = annotation_data__percent(&al->data[i],
2518 percent_type);
2519
2520 if (percent > percent_max)
2521 percent_max = percent;
2522 }
2523
2524 return percent_max;
2525 }
2526
disasm_line__write(struct disasm_line * dl,struct annotation * notes,void * obj,char * bf,size_t size,void (* obj__printf)(void * obj,const char * fmt,...),void (* obj__write_graph)(void * obj,int graph))2527 static void disasm_line__write(struct disasm_line *dl, struct annotation *notes,
2528 void *obj, char *bf, size_t size,
2529 void (*obj__printf)(void *obj, const char *fmt, ...),
2530 void (*obj__write_graph)(void *obj, int graph))
2531 {
2532 if (dl->ins.ops && dl->ins.ops->scnprintf) {
2533 if (ins__is_jump(&dl->ins)) {
2534 bool fwd;
2535
2536 if (dl->ops.target.outside)
2537 goto call_like;
2538 fwd = dl->ops.target.offset > dl->al.offset;
2539 obj__write_graph(obj, fwd ? DARROW_CHAR : UARROW_CHAR);
2540 obj__printf(obj, " ");
2541 } else if (ins__is_call(&dl->ins)) {
2542 call_like:
2543 obj__write_graph(obj, RARROW_CHAR);
2544 obj__printf(obj, " ");
2545 } else if (ins__is_ret(&dl->ins)) {
2546 obj__write_graph(obj, LARROW_CHAR);
2547 obj__printf(obj, " ");
2548 } else {
2549 obj__printf(obj, " ");
2550 }
2551 } else {
2552 obj__printf(obj, " ");
2553 }
2554
2555 disasm_line__scnprintf(dl, bf, size, !notes->options->use_offset);
2556 }
2557
__annotation_line__write(struct annotation_line * al,struct annotation * notes,bool first_line,bool current_entry,bool change_color,int width,void * obj,unsigned int percent_type,int (* obj__set_color)(void * obj,int color),void (* obj__set_percent_color)(void * obj,double percent,bool current),int (* obj__set_jumps_percent_color)(void * obj,int nr,bool current),void (* obj__printf)(void * obj,const char * fmt,...),void (* obj__write_graph)(void * obj,int graph))2558 static void __annotation_line__write(struct annotation_line *al, struct annotation *notes,
2559 bool first_line, bool current_entry, bool change_color, int width,
2560 void *obj, unsigned int percent_type,
2561 int (*obj__set_color)(void *obj, int color),
2562 void (*obj__set_percent_color)(void *obj, double percent, bool current),
2563 int (*obj__set_jumps_percent_color)(void *obj, int nr, bool current),
2564 void (*obj__printf)(void *obj, const char *fmt, ...),
2565 void (*obj__write_graph)(void *obj, int graph))
2566
2567 {
2568 double percent_max = annotation_line__max_percent(al, notes, percent_type);
2569 int pcnt_width = annotation__pcnt_width(notes),
2570 cycles_width = annotation__cycles_width(notes);
2571 bool show_title = false;
2572 char bf[256];
2573 int printed;
2574
2575 if (first_line && (al->offset == -1 || percent_max == 0.0)) {
2576 if (notes->have_cycles) {
2577 if (al->ipc == 0.0 && al->cycles == 0)
2578 show_title = true;
2579 } else
2580 show_title = true;
2581 }
2582
2583 if (al->offset != -1 && percent_max != 0.0) {
2584 int i;
2585
2586 for (i = 0; i < notes->nr_events; i++) {
2587 double percent;
2588
2589 percent = annotation_data__percent(&al->data[i], percent_type);
2590
2591 obj__set_percent_color(obj, percent, current_entry);
2592 if (notes->options->show_total_period) {
2593 obj__printf(obj, "%11" PRIu64 " ", al->data[i].he.period);
2594 } else if (notes->options->show_nr_samples) {
2595 obj__printf(obj, "%6" PRIu64 " ",
2596 al->data[i].he.nr_samples);
2597 } else {
2598 obj__printf(obj, "%6.2f ", percent);
2599 }
2600 }
2601 } else {
2602 obj__set_percent_color(obj, 0, current_entry);
2603
2604 if (!show_title)
2605 obj__printf(obj, "%-*s", pcnt_width, " ");
2606 else {
2607 obj__printf(obj, "%-*s", pcnt_width,
2608 notes->options->show_total_period ? "Period" :
2609 notes->options->show_nr_samples ? "Samples" : "Percent");
2610 }
2611 }
2612
2613 if (notes->have_cycles) {
2614 if (al->ipc)
2615 obj__printf(obj, "%*.2f ", ANNOTATION__IPC_WIDTH - 1, al->ipc);
2616 else if (!show_title)
2617 obj__printf(obj, "%*s", ANNOTATION__IPC_WIDTH, " ");
2618 else
2619 obj__printf(obj, "%*s ", ANNOTATION__IPC_WIDTH - 1, "IPC");
2620
2621 if (!notes->options->show_minmax_cycle) {
2622 if (al->cycles)
2623 obj__printf(obj, "%*" PRIu64 " ",
2624 ANNOTATION__CYCLES_WIDTH - 1, al->cycles);
2625 else if (!show_title)
2626 obj__printf(obj, "%*s",
2627 ANNOTATION__CYCLES_WIDTH, " ");
2628 else
2629 obj__printf(obj, "%*s ",
2630 ANNOTATION__CYCLES_WIDTH - 1,
2631 "Cycle");
2632 } else {
2633 if (al->cycles) {
2634 char str[32];
2635
2636 scnprintf(str, sizeof(str),
2637 "%" PRIu64 "(%" PRIu64 "/%" PRIu64 ")",
2638 al->cycles, al->cycles_min,
2639 al->cycles_max);
2640
2641 obj__printf(obj, "%*s ",
2642 ANNOTATION__MINMAX_CYCLES_WIDTH - 1,
2643 str);
2644 } else if (!show_title)
2645 obj__printf(obj, "%*s",
2646 ANNOTATION__MINMAX_CYCLES_WIDTH,
2647 " ");
2648 else
2649 obj__printf(obj, "%*s ",
2650 ANNOTATION__MINMAX_CYCLES_WIDTH - 1,
2651 "Cycle(min/max)");
2652 }
2653 }
2654
2655 obj__printf(obj, " ");
2656
2657 if (!*al->line)
2658 obj__printf(obj, "%-*s", width - pcnt_width - cycles_width, " ");
2659 else if (al->offset == -1) {
2660 if (al->line_nr && notes->options->show_linenr)
2661 printed = scnprintf(bf, sizeof(bf), "%-*d ", notes->widths.addr + 1, al->line_nr);
2662 else
2663 printed = scnprintf(bf, sizeof(bf), "%-*s ", notes->widths.addr, " ");
2664 obj__printf(obj, bf);
2665 obj__printf(obj, "%-*s", width - printed - pcnt_width - cycles_width + 1, al->line);
2666 } else {
2667 u64 addr = al->offset;
2668 int color = -1;
2669
2670 if (!notes->options->use_offset)
2671 addr += notes->start;
2672
2673 if (!notes->options->use_offset) {
2674 printed = scnprintf(bf, sizeof(bf), "%" PRIx64 ": ", addr);
2675 } else {
2676 if (al->jump_sources &&
2677 notes->options->offset_level >= ANNOTATION__OFFSET_JUMP_TARGETS) {
2678 if (notes->options->show_nr_jumps) {
2679 int prev;
2680 printed = scnprintf(bf, sizeof(bf), "%*d ",
2681 notes->widths.jumps,
2682 al->jump_sources);
2683 prev = obj__set_jumps_percent_color(obj, al->jump_sources,
2684 current_entry);
2685 obj__printf(obj, bf);
2686 obj__set_color(obj, prev);
2687 }
2688 print_addr:
2689 printed = scnprintf(bf, sizeof(bf), "%*" PRIx64 ": ",
2690 notes->widths.target, addr);
2691 } else if (ins__is_call(&disasm_line(al)->ins) &&
2692 notes->options->offset_level >= ANNOTATION__OFFSET_CALL) {
2693 goto print_addr;
2694 } else if (notes->options->offset_level == ANNOTATION__MAX_OFFSET_LEVEL) {
2695 goto print_addr;
2696 } else {
2697 printed = scnprintf(bf, sizeof(bf), "%-*s ",
2698 notes->widths.addr, " ");
2699 }
2700 }
2701
2702 if (change_color)
2703 color = obj__set_color(obj, HE_COLORSET_ADDR);
2704 obj__printf(obj, bf);
2705 if (change_color)
2706 obj__set_color(obj, color);
2707
2708 disasm_line__write(disasm_line(al), notes, obj, bf, sizeof(bf), obj__printf, obj__write_graph);
2709
2710 obj__printf(obj, "%-*s", width - pcnt_width - cycles_width - 3 - printed, bf);
2711 }
2712
2713 }
2714
annotation_line__write(struct annotation_line * al,struct annotation * notes,struct annotation_write_ops * wops,struct annotation_options * opts)2715 void annotation_line__write(struct annotation_line *al, struct annotation *notes,
2716 struct annotation_write_ops *wops,
2717 struct annotation_options *opts)
2718 {
2719 __annotation_line__write(al, notes, wops->first_line, wops->current_entry,
2720 wops->change_color, wops->width, wops->obj,
2721 opts->percent_type,
2722 wops->set_color, wops->set_percent_color,
2723 wops->set_jumps_percent_color, wops->printf,
2724 wops->write_graph);
2725 }
2726
symbol__annotate2(struct symbol * sym,struct map * map,struct perf_evsel * evsel,struct annotation_options * options,struct arch ** parch)2727 int symbol__annotate2(struct symbol *sym, struct map *map, struct perf_evsel *evsel,
2728 struct annotation_options *options, struct arch **parch)
2729 {
2730 struct annotation *notes = symbol__annotation(sym);
2731 size_t size = symbol__size(sym);
2732 int nr_pcnt = 1, err;
2733
2734 notes->offsets = zalloc(size * sizeof(struct annotation_line *));
2735 if (notes->offsets == NULL)
2736 return -1;
2737
2738 if (perf_evsel__is_group_event(evsel))
2739 nr_pcnt = evsel->nr_members;
2740
2741 err = symbol__annotate(sym, map, evsel, 0, options, parch);
2742 if (err)
2743 goto out_free_offsets;
2744
2745 notes->options = options;
2746
2747 symbol__calc_percent(sym, evsel);
2748
2749 notes->start = map__rip_2objdump(map, sym->start);
2750
2751 annotation__set_offsets(notes, size);
2752 annotation__mark_jump_targets(notes, sym);
2753 annotation__compute_ipc(notes, size);
2754 annotation__init_column_widths(notes, sym);
2755 notes->nr_events = nr_pcnt;
2756
2757 annotation__update_column_widths(notes);
2758
2759 return 0;
2760
2761 out_free_offsets:
2762 zfree(¬es->offsets);
2763 return -1;
2764 }
2765
2766 #define ANNOTATION__CFG(n) \
2767 { .name = #n, .value = &annotation__default_options.n, }
2768
2769 /*
2770 * Keep the entries sorted, they are bsearch'ed
2771 */
2772 static struct annotation_config {
2773 const char *name;
2774 void *value;
2775 } annotation__configs[] = {
2776 ANNOTATION__CFG(hide_src_code),
2777 ANNOTATION__CFG(jump_arrows),
2778 ANNOTATION__CFG(offset_level),
2779 ANNOTATION__CFG(show_linenr),
2780 ANNOTATION__CFG(show_nr_jumps),
2781 ANNOTATION__CFG(show_nr_samples),
2782 ANNOTATION__CFG(show_total_period),
2783 ANNOTATION__CFG(use_offset),
2784 };
2785
2786 #undef ANNOTATION__CFG
2787
annotation_config__cmp(const void * name,const void * cfgp)2788 static int annotation_config__cmp(const void *name, const void *cfgp)
2789 {
2790 const struct annotation_config *cfg = cfgp;
2791
2792 return strcmp(name, cfg->name);
2793 }
2794
annotation__config(const char * var,const char * value,void * data __maybe_unused)2795 static int annotation__config(const char *var, const char *value,
2796 void *data __maybe_unused)
2797 {
2798 struct annotation_config *cfg;
2799 const char *name;
2800
2801 if (!strstarts(var, "annotate."))
2802 return 0;
2803
2804 name = var + 9;
2805 cfg = bsearch(name, annotation__configs, ARRAY_SIZE(annotation__configs),
2806 sizeof(struct annotation_config), annotation_config__cmp);
2807
2808 if (cfg == NULL)
2809 pr_debug("%s variable unknown, ignoring...", var);
2810 else if (strcmp(var, "annotate.offset_level") == 0) {
2811 perf_config_int(cfg->value, name, value);
2812
2813 if (*(int *)cfg->value > ANNOTATION__MAX_OFFSET_LEVEL)
2814 *(int *)cfg->value = ANNOTATION__MAX_OFFSET_LEVEL;
2815 else if (*(int *)cfg->value < ANNOTATION__MIN_OFFSET_LEVEL)
2816 *(int *)cfg->value = ANNOTATION__MIN_OFFSET_LEVEL;
2817 } else {
2818 *(bool *)cfg->value = perf_config_bool(name, value);
2819 }
2820 return 0;
2821 }
2822
annotation_config__init(void)2823 void annotation_config__init(void)
2824 {
2825 perf_config(annotation__config, NULL);
2826
2827 annotation__default_options.show_total_period = symbol_conf.show_total_period;
2828 annotation__default_options.show_nr_samples = symbol_conf.show_nr_samples;
2829 }
2830
parse_percent_type(char * str1,char * str2)2831 static unsigned int parse_percent_type(char *str1, char *str2)
2832 {
2833 unsigned int type = (unsigned int) -1;
2834
2835 if (!strcmp("period", str1)) {
2836 if (!strcmp("local", str2))
2837 type = PERCENT_PERIOD_LOCAL;
2838 else if (!strcmp("global", str2))
2839 type = PERCENT_PERIOD_GLOBAL;
2840 }
2841
2842 if (!strcmp("hits", str1)) {
2843 if (!strcmp("local", str2))
2844 type = PERCENT_HITS_LOCAL;
2845 else if (!strcmp("global", str2))
2846 type = PERCENT_HITS_GLOBAL;
2847 }
2848
2849 return type;
2850 }
2851
annotate_parse_percent_type(const struct option * opt,const char * _str,int unset __maybe_unused)2852 int annotate_parse_percent_type(const struct option *opt, const char *_str,
2853 int unset __maybe_unused)
2854 {
2855 struct annotation_options *opts = opt->value;
2856 unsigned int type;
2857 char *str1, *str2;
2858 int err = -1;
2859
2860 str1 = strdup(_str);
2861 if (!str1)
2862 return -ENOMEM;
2863
2864 str2 = strchr(str1, '-');
2865 if (!str2)
2866 goto out;
2867
2868 *str2++ = 0;
2869
2870 type = parse_percent_type(str1, str2);
2871 if (type == (unsigned int) -1)
2872 type = parse_percent_type(str2, str1);
2873 if (type != (unsigned int) -1) {
2874 opts->percent_type = type;
2875 err = 0;
2876 }
2877
2878 out:
2879 free(str1);
2880 return err;
2881 }
2882
