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TOMOYO Linux Cross Reference
Linux/tools/perf/util/annotate.c

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  1 // SPDX-License-Identifier: GPL-2.0-only
  2 /*
  3  * Copyright (C) 2011, Red Hat Inc, Arnaldo Carvalho de Melo <acme@redhat.com>
  4  *
  5  * Parts came from builtin-annotate.c, see those files for further
  6  * copyright notes.
  7  */
  8 
  9 #include <errno.h>
 10 #include <inttypes.h>
 11 #include <libgen.h>
 12 #include <stdlib.h>
 13 #include "util.h" // hex_width()
 14 #include "ui/ui.h"
 15 #include "sort.h"
 16 #include "build-id.h"
 17 #include "color.h"
 18 #include "config.h"
 19 #include "dso.h"
 20 #include "env.h"
 21 #include "map.h"
 22 #include "maps.h"
 23 #include "symbol.h"
 24 #include "srcline.h"
 25 #include "units.h"
 26 #include "debug.h"
 27 #include "annotate.h"
 28 #include "evsel.h"
 29 #include "evlist.h"
 30 #include "bpf-event.h"
 31 #include "block-range.h"
 32 #include "string2.h"
 33 #include "util/event.h"
 34 #include "arch/common.h"
 35 #include <regex.h>
 36 #include <pthread.h>
 37 #include <linux/bitops.h>
 38 #include <linux/kernel.h>
 39 #include <linux/string.h>
 40 #include <subcmd/parse-options.h>
 41 #include <subcmd/run-command.h>
 42 
 43 /* FIXME: For the HE_COLORSET */
 44 #include "ui/browser.h"
 45 
 46 /*
 47  * FIXME: Using the same values as slang.h,
 48  * but that header may not be available everywhere
 49  */
 50 #define LARROW_CHAR     ((unsigned char)',')
 51 #define RARROW_CHAR     ((unsigned char)'+')
 52 #define DARROW_CHAR     ((unsigned char)'.')
 53 #define UARROW_CHAR     ((unsigned char)'-')
 54 
 55 #include <linux/ctype.h>
 56 
 57 struct annotation_options annotation__default_options = {
 58         .use_offset     = true,
 59         .jump_arrows    = true,
 60         .annotate_src   = true,
 61         .offset_level   = ANNOTATION__OFFSET_JUMP_TARGETS,
 62         .percent_type   = PERCENT_PERIOD_LOCAL,
 63 };
 64 
 65 static regex_t   file_lineno;
 66 
 67 static struct ins_ops *ins__find(struct arch *arch, const char *name);
 68 static void ins__sort(struct arch *arch);
 69 static int disasm_line__parse(char *line, const char **namep, char **rawp);
 70 
 71 struct arch {
 72         const char      *name;
 73         struct ins      *instructions;
 74         size_t          nr_instructions;
 75         size_t          nr_instructions_allocated;
 76         struct ins_ops  *(*associate_instruction_ops)(struct arch *arch, const char *name);
 77         bool            sorted_instructions;
 78         bool            initialized;
 79         void            *priv;
 80         unsigned int    model;
 81         unsigned int    family;
 82         int             (*init)(struct arch *arch, char *cpuid);
 83         bool            (*ins_is_fused)(struct arch *arch, const char *ins1,
 84                                         const char *ins2);
 85         struct          {
 86                 char comment_char;
 87                 char skip_functions_char;
 88         } objdump;
 89 };
 90 
 91 static struct ins_ops call_ops;
 92 static struct ins_ops dec_ops;
 93 static struct ins_ops jump_ops;
 94 static struct ins_ops mov_ops;
 95 static struct ins_ops nop_ops;
 96 static struct ins_ops lock_ops;
 97 static struct ins_ops ret_ops;
 98 
 99 static int arch__grow_instructions(struct arch *arch)
100 {
101         struct ins *new_instructions;
102         size_t new_nr_allocated;
103 
104         if (arch->nr_instructions_allocated == 0 && arch->instructions)
105                 goto grow_from_non_allocated_table;
106 
107         new_nr_allocated = arch->nr_instructions_allocated + 128;
108         new_instructions = realloc(arch->instructions, new_nr_allocated * sizeof(struct ins));
109         if (new_instructions == NULL)
110                 return -1;
111 
112 out_update_instructions:
113         arch->instructions = new_instructions;
114         arch->nr_instructions_allocated = new_nr_allocated;
115         return 0;
116 
117 grow_from_non_allocated_table:
118         new_nr_allocated = arch->nr_instructions + 128;
119         new_instructions = calloc(new_nr_allocated, sizeof(struct ins));
120         if (new_instructions == NULL)
121                 return -1;
122 
123         memcpy(new_instructions, arch->instructions, arch->nr_instructions);
124         goto out_update_instructions;
125 }
126 
127 static int arch__associate_ins_ops(struct arch* arch, const char *name, struct ins_ops *ops)
128 {
129         struct ins *ins;
130 
131         if (arch->nr_instructions == arch->nr_instructions_allocated &&
132             arch__grow_instructions(arch))
133                 return -1;
134 
135         ins = &arch->instructions[arch->nr_instructions];
136         ins->name = strdup(name);
137         if (!ins->name)
138                 return -1;
139 
140         ins->ops  = ops;
141         arch->nr_instructions++;
142 
143         ins__sort(arch);
144         return 0;
145 }
146 
147 #include "arch/arc/annotate/instructions.c"
148 #include "arch/arm/annotate/instructions.c"
149 #include "arch/arm64/annotate/instructions.c"
150 #include "arch/csky/annotate/instructions.c"
151 #include "arch/mips/annotate/instructions.c"
152 #include "arch/x86/annotate/instructions.c"
153 #include "arch/powerpc/annotate/instructions.c"
154 #include "arch/s390/annotate/instructions.c"
155 #include "arch/sparc/annotate/instructions.c"
156 
157 static struct arch architectures[] = {
158         {
159                 .name = "arc",
160                 .init = arc__annotate_init,
161         },
162         {
163                 .name = "arm",
164                 .init = arm__annotate_init,
165         },
166         {
167                 .name = "arm64",
168                 .init = arm64__annotate_init,
169         },
170         {
171                 .name = "csky",
172                 .init = csky__annotate_init,
173         },
174         {
175                 .name = "mips",
176                 .init = mips__annotate_init,
177                 .objdump = {
178                         .comment_char = '#',
179                 },
180         },
181         {
182                 .name = "x86",
183                 .init = x86__annotate_init,
184                 .instructions = x86__instructions,
185                 .nr_instructions = ARRAY_SIZE(x86__instructions),
186                 .ins_is_fused = x86__ins_is_fused,
187                 .objdump =  {
188                         .comment_char = '#',
189                 },
190         },
191         {
192                 .name = "powerpc",
193                 .init = powerpc__annotate_init,
194         },
195         {
196                 .name = "s390",
197                 .init = s390__annotate_init,
198                 .objdump =  {
199                         .comment_char = '#',
200                 },
201         },
202         {
203                 .name = "sparc",
204                 .init = sparc__annotate_init,
205                 .objdump = {
206                         .comment_char = '#',
207                 },
208         },
209 };
210 
211 static void ins__delete(struct ins_operands *ops)
212 {
213         if (ops == NULL)
214                 return;
215         zfree(&ops->source.raw);
216         zfree(&ops->source.name);
217         zfree(&ops->target.raw);
218         zfree(&ops->target.name);
219 }
220 
221 static int ins__raw_scnprintf(struct ins *ins, char *bf, size_t size,
222                               struct ins_operands *ops, int max_ins_name)
223 {
224         return scnprintf(bf, size, "%-*s %s", max_ins_name, ins->name, ops->raw);
225 }
226 
227 int ins__scnprintf(struct ins *ins, char *bf, size_t size,
228                    struct ins_operands *ops, int max_ins_name)
229 {
230         if (ins->ops->scnprintf)
231                 return ins->ops->scnprintf(ins, bf, size, ops, max_ins_name);
232 
233         return ins__raw_scnprintf(ins, bf, size, ops, max_ins_name);
234 }
235 
236 bool ins__is_fused(struct arch *arch, const char *ins1, const char *ins2)
237 {
238         if (!arch || !arch->ins_is_fused)
239                 return false;
240 
241         return arch->ins_is_fused(arch, ins1, ins2);
242 }
243 
244 static int call__parse(struct arch *arch, struct ins_operands *ops, struct map_symbol *ms)
245 {
246         char *endptr, *tok, *name;
247         struct map *map = ms->map;
248         struct addr_map_symbol target = {
249                 .ms = { .map = map, },
250         };
251 
252         ops->target.addr = strtoull(ops->raw, &endptr, 16);
253 
254         name = strchr(endptr, '<');
255         if (name == NULL)
256                 goto indirect_call;
257 
258         name++;
259 
260         if (arch->objdump.skip_functions_char &&
261             strchr(name, arch->objdump.skip_functions_char))
262                 return -1;
263 
264         tok = strchr(name, '>');
265         if (tok == NULL)
266                 return -1;
267 
268         *tok = '\0';
269         ops->target.name = strdup(name);
270         *tok = '>';
271 
272         if (ops->target.name == NULL)
273                 return -1;
274 find_target:
275         target.addr = map__objdump_2mem(map, ops->target.addr);
276 
277         if (maps__find_ams(ms->maps, &target) == 0 &&
278             map__rip_2objdump(target.ms.map, map->map_ip(target.ms.map, target.addr)) == ops->target.addr)
279                 ops->target.sym = target.ms.sym;
280 
281         return 0;
282 
283 indirect_call:
284         tok = strchr(endptr, '*');
285         if (tok != NULL) {
286                 endptr++;
287 
288                 /* Indirect call can use a non-rip register and offset: callq  *0x8(%rbx).
289                  * Do not parse such instruction.  */
290                 if (strstr(endptr, "(%r") == NULL)
291                         ops->target.addr = strtoull(endptr, NULL, 16);
292         }
293         goto find_target;
294 }
295 
296 static int call__scnprintf(struct ins *ins, char *bf, size_t size,
297                            struct ins_operands *ops, int max_ins_name)
298 {
299         if (ops->target.sym)
300                 return scnprintf(bf, size, "%-*s %s", max_ins_name, ins->name, ops->target.sym->name);
301 
302         if (ops->target.addr == 0)
303                 return ins__raw_scnprintf(ins, bf, size, ops, max_ins_name);
304 
305         if (ops->target.name)
306                 return scnprintf(bf, size, "%-*s %s", max_ins_name, ins->name, ops->target.name);
307 
308         return scnprintf(bf, size, "%-*s *%" PRIx64, max_ins_name, ins->name, ops->target.addr);
309 }
310 
311 static struct ins_ops call_ops = {
312         .parse     = call__parse,
313         .scnprintf = call__scnprintf,
314 };
315 
316 bool ins__is_call(const struct ins *ins)
317 {
318         return ins->ops == &call_ops || ins->ops == &s390_call_ops;
319 }
320 
321 /*
322  * Prevents from matching commas in the comment section, e.g.:
323  * ffff200008446e70:       b.cs    ffff2000084470f4 <generic_exec_single+0x314>  // b.hs, b.nlast
324  */
325 static inline const char *validate_comma(const char *c, struct ins_operands *ops)
326 {
327         if (ops->raw_comment && c > ops->raw_comment)
328                 return NULL;
329 
330         return c;
331 }
332 
333 static int jump__parse(struct arch *arch, struct ins_operands *ops, struct map_symbol *ms)
334 {
335         struct map *map = ms->map;
336         struct symbol *sym = ms->sym;
337         struct addr_map_symbol target = {
338                 .ms = { .map = map, },
339         };
340         const char *c = strchr(ops->raw, ',');
341         u64 start, end;
342 
343         ops->raw_comment = strchr(ops->raw, arch->objdump.comment_char);
344         c = validate_comma(c, ops);
345 
346         /*
347          * Examples of lines to parse for the _cpp_lex_token@@Base
348          * function:
349          *
350          * 1159e6c: jne    115aa32 <_cpp_lex_token@@Base+0xf92>
351          * 1159e8b: jne    c469be <cpp_named_operator2name@@Base+0xa72>
352          *
353          * The first is a jump to an offset inside the same function,
354          * the second is to another function, i.e. that 0xa72 is an
355          * offset in the cpp_named_operator2name@@base function.
356          */
357         /*
358          * skip over possible up to 2 operands to get to address, e.g.:
359          * tbnz  w0, #26, ffff0000083cd190 <security_file_permission+0xd0>
360          */
361         if (c++ != NULL) {
362                 ops->target.addr = strtoull(c, NULL, 16);
363                 if (!ops->target.addr) {
364                         c = strchr(c, ',');
365                         c = validate_comma(c, ops);
366                         if (c++ != NULL)
367                                 ops->target.addr = strtoull(c, NULL, 16);
368                 }
369         } else {
370                 ops->target.addr = strtoull(ops->raw, NULL, 16);
371         }
372 
373         target.addr = map__objdump_2mem(map, ops->target.addr);
374         start = map->unmap_ip(map, sym->start),
375         end = map->unmap_ip(map, sym->end);
376 
377         ops->target.outside = target.addr < start || target.addr > end;
378 
379         /*
380          * FIXME: things like this in _cpp_lex_token (gcc's cc1 program):
381 
382                 cpp_named_operator2name@@Base+0xa72
383 
384          * Point to a place that is after the cpp_named_operator2name
385          * boundaries, i.e.  in the ELF symbol table for cc1
386          * cpp_named_operator2name is marked as being 32-bytes long, but it in
387          * fact is much larger than that, so we seem to need a symbols__find()
388          * routine that looks for >= current->start and  < next_symbol->start,
389          * possibly just for C++ objects?
390          *
391          * For now lets just make some progress by marking jumps to outside the
392          * current function as call like.
393          *
394          * Actual navigation will come next, with further understanding of how
395          * the symbol searching and disassembly should be done.
396          */
397         if (maps__find_ams(ms->maps, &target) == 0 &&
398             map__rip_2objdump(target.ms.map, map->map_ip(target.ms.map, target.addr)) == ops->target.addr)
399                 ops->target.sym = target.ms.sym;
400 
401         if (!ops->target.outside) {
402                 ops->target.offset = target.addr - start;
403                 ops->target.offset_avail = true;
404         } else {
405                 ops->target.offset_avail = false;
406         }
407 
408         return 0;
409 }
410 
411 static int jump__scnprintf(struct ins *ins, char *bf, size_t size,
412                            struct ins_operands *ops, int max_ins_name)
413 {
414         const char *c;
415 
416         if (!ops->target.addr || ops->target.offset < 0)
417                 return ins__raw_scnprintf(ins, bf, size, ops, max_ins_name);
418 
419         if (ops->target.outside && ops->target.sym != NULL)
420                 return scnprintf(bf, size, "%-*s %s", max_ins_name, ins->name, ops->target.sym->name);
421 
422         c = strchr(ops->raw, ',');
423         c = validate_comma(c, ops);
424 
425         if (c != NULL) {
426                 const char *c2 = strchr(c + 1, ',');
427 
428                 c2 = validate_comma(c2, ops);
429                 /* check for 3-op insn */
430                 if (c2 != NULL)
431                         c = c2;
432                 c++;
433 
434                 /* mirror arch objdump's space-after-comma style */
435                 if (*c == ' ')
436                         c++;
437         }
438 
439         return scnprintf(bf, size, "%-*s %.*s%" PRIx64, max_ins_name,
440                          ins->name, c ? c - ops->raw : 0, ops->raw,
441                          ops->target.offset);
442 }
443 
444 static struct ins_ops jump_ops = {
445         .parse     = jump__parse,
446         .scnprintf = jump__scnprintf,
447 };
448 
449 bool ins__is_jump(const struct ins *ins)
450 {
451         return ins->ops == &jump_ops;
452 }
453 
454 static int comment__symbol(char *raw, char *comment, u64 *addrp, char **namep)
455 {
456         char *endptr, *name, *t;
457 
458         if (strstr(raw, "(%rip)") == NULL)
459                 return 0;
460 
461         *addrp = strtoull(comment, &endptr, 16);
462         if (endptr == comment)
463                 return 0;
464         name = strchr(endptr, '<');
465         if (name == NULL)
466                 return -1;
467 
468         name++;
469 
470         t = strchr(name, '>');
471         if (t == NULL)
472                 return 0;
473 
474         *t = '\0';
475         *namep = strdup(name);
476         *t = '>';
477 
478         return 0;
479 }
480 
481 static int lock__parse(struct arch *arch, struct ins_operands *ops, struct map_symbol *ms)
482 {
483         ops->locked.ops = zalloc(sizeof(*ops->locked.ops));
484         if (ops->locked.ops == NULL)
485                 return 0;
486 
487         if (disasm_line__parse(ops->raw, &ops->locked.ins.name, &ops->locked.ops->raw) < 0)
488                 goto out_free_ops;
489 
490         ops->locked.ins.ops = ins__find(arch, ops->locked.ins.name);
491 
492         if (ops->locked.ins.ops == NULL)
493                 goto out_free_ops;
494 
495         if (ops->locked.ins.ops->parse &&
496             ops->locked.ins.ops->parse(arch, ops->locked.ops, ms) < 0)
497                 goto out_free_ops;
498 
499         return 0;
500 
501 out_free_ops:
502         zfree(&ops->locked.ops);
503         return 0;
504 }
505 
506 static int lock__scnprintf(struct ins *ins, char *bf, size_t size,
507                            struct ins_operands *ops, int max_ins_name)
508 {
509         int printed;
510 
511         if (ops->locked.ins.ops == NULL)
512                 return ins__raw_scnprintf(ins, bf, size, ops, max_ins_name);
513 
514         printed = scnprintf(bf, size, "%-*s ", max_ins_name, ins->name);
515         return printed + ins__scnprintf(&ops->locked.ins, bf + printed,
516                                         size - printed, ops->locked.ops, max_ins_name);
517 }
518 
519 static void lock__delete(struct ins_operands *ops)
520 {
521         struct ins *ins = &ops->locked.ins;
522 
523         if (ins->ops && ins->ops->free)
524                 ins->ops->free(ops->locked.ops);
525         else
526                 ins__delete(ops->locked.ops);
527 
528         zfree(&ops->locked.ops);
529         zfree(&ops->target.raw);
530         zfree(&ops->target.name);
531 }
532 
533 static struct ins_ops lock_ops = {
534         .free      = lock__delete,
535         .parse     = lock__parse,
536         .scnprintf = lock__scnprintf,
537 };
538 
539 static int mov__parse(struct arch *arch, struct ins_operands *ops, struct map_symbol *ms __maybe_unused)
540 {
541         char *s = strchr(ops->raw, ','), *target, *comment, prev;
542 
543         if (s == NULL)
544                 return -1;
545 
546         *s = '\0';
547         ops->source.raw = strdup(ops->raw);
548         *s = ',';
549 
550         if (ops->source.raw == NULL)
551                 return -1;
552 
553         target = ++s;
554         comment = strchr(s, arch->objdump.comment_char);
555 
556         if (comment != NULL)
557                 s = comment - 1;
558         else
559                 s = strchr(s, '\0') - 1;
560 
561         while (s > target && isspace(s[0]))
562                 --s;
563         s++;
564         prev = *s;
565         *s = '\0';
566 
567         ops->target.raw = strdup(target);
568         *s = prev;
569 
570         if (ops->target.raw == NULL)
571                 goto out_free_source;
572 
573         if (comment == NULL)
574                 return 0;
575 
576         comment = skip_spaces(comment);
577         comment__symbol(ops->source.raw, comment + 1, &ops->source.addr, &ops->source.name);
578         comment__symbol(ops->target.raw, comment + 1, &ops->target.addr, &ops->target.name);
579 
580         return 0;
581 
582 out_free_source:
583         zfree(&ops->source.raw);
584         return -1;
585 }
586 
587 static int mov__scnprintf(struct ins *ins, char *bf, size_t size,
588                            struct ins_operands *ops, int max_ins_name)
589 {
590         return scnprintf(bf, size, "%-*s %s,%s", max_ins_name, ins->name,
591                          ops->source.name ?: ops->source.raw,
592                          ops->target.name ?: ops->target.raw);
593 }
594 
595 static struct ins_ops mov_ops = {
596         .parse     = mov__parse,
597         .scnprintf = mov__scnprintf,
598 };
599 
600 static int dec__parse(struct arch *arch __maybe_unused, struct ins_operands *ops, struct map_symbol *ms __maybe_unused)
601 {
602         char *target, *comment, *s, prev;
603 
604         target = s = ops->raw;
605 
606         while (s[0] != '\0' && !isspace(s[0]))
607                 ++s;
608         prev = *s;
609         *s = '\0';
610 
611         ops->target.raw = strdup(target);
612         *s = prev;
613 
614         if (ops->target.raw == NULL)
615                 return -1;
616 
617         comment = strchr(s, arch->objdump.comment_char);
618         if (comment == NULL)
619                 return 0;
620 
621         comment = skip_spaces(comment);
622         comment__symbol(ops->target.raw, comment + 1, &ops->target.addr, &ops->target.name);
623 
624         return 0;
625 }
626 
627 static int dec__scnprintf(struct ins *ins, char *bf, size_t size,
628                            struct ins_operands *ops, int max_ins_name)
629 {
630         return scnprintf(bf, size, "%-*s %s", max_ins_name, ins->name,
631                          ops->target.name ?: ops->target.raw);
632 }
633 
634 static struct ins_ops dec_ops = {
635         .parse     = dec__parse,
636         .scnprintf = dec__scnprintf,
637 };
638 
639 static int nop__scnprintf(struct ins *ins __maybe_unused, char *bf, size_t size,
640                           struct ins_operands *ops __maybe_unused, int max_ins_name)
641 {
642         return scnprintf(bf, size, "%-*s", max_ins_name, "nop");
643 }
644 
645 static struct ins_ops nop_ops = {
646         .scnprintf = nop__scnprintf,
647 };
648 
649 static struct ins_ops ret_ops = {
650         .scnprintf = ins__raw_scnprintf,
651 };
652 
653 bool ins__is_ret(const struct ins *ins)
654 {
655         return ins->ops == &ret_ops;
656 }
657 
658 bool ins__is_lock(const struct ins *ins)
659 {
660         return ins->ops == &lock_ops;
661 }
662 
663 static int ins__key_cmp(const void *name, const void *insp)
664 {
665         const struct ins *ins = insp;
666 
667         return strcmp(name, ins->name);
668 }
669 
670 static int ins__cmp(const void *a, const void *b)
671 {
672         const struct ins *ia = a;
673         const struct ins *ib = b;
674 
675         return strcmp(ia->name, ib->name);
676 }
677 
678 static void ins__sort(struct arch *arch)
679 {
680         const int nmemb = arch->nr_instructions;
681 
682         qsort(arch->instructions, nmemb, sizeof(struct ins), ins__cmp);
683 }
684 
685 static struct ins_ops *__ins__find(struct arch *arch, const char *name)
686 {
687         struct ins *ins;
688         const int nmemb = arch->nr_instructions;
689 
690         if (!arch->sorted_instructions) {
691                 ins__sort(arch);
692                 arch->sorted_instructions = true;
693         }
694 
695         ins = bsearch(name, arch->instructions, nmemb, sizeof(struct ins), ins__key_cmp);
696         return ins ? ins->ops : NULL;
697 }
698 
699 static struct ins_ops *ins__find(struct arch *arch, const char *name)
700 {
701         struct ins_ops *ops = __ins__find(arch, name);
702 
703         if (!ops && arch->associate_instruction_ops)
704                 ops = arch->associate_instruction_ops(arch, name);
705 
706         return ops;
707 }
708 
709 static int arch__key_cmp(const void *name, const void *archp)
710 {
711         const struct arch *arch = archp;
712 
713         return strcmp(name, arch->name);
714 }
715 
716 static int arch__cmp(const void *a, const void *b)
717 {
718         const struct arch *aa = a;
719         const struct arch *ab = b;
720 
721         return strcmp(aa->name, ab->name);
722 }
723 
724 static void arch__sort(void)
725 {
726         const int nmemb = ARRAY_SIZE(architectures);
727 
728         qsort(architectures, nmemb, sizeof(struct arch), arch__cmp);
729 }
730 
731 static struct arch *arch__find(const char *name)
732 {
733         const int nmemb = ARRAY_SIZE(architectures);
734         static bool sorted;
735 
736         if (!sorted) {
737                 arch__sort();
738                 sorted = true;
739         }
740 
741         return bsearch(name, architectures, nmemb, sizeof(struct arch), arch__key_cmp);
742 }
743 
744 static struct annotated_source *annotated_source__new(void)
745 {
746         struct annotated_source *src = zalloc(sizeof(*src));
747 
748         if (src != NULL)
749                 INIT_LIST_HEAD(&src->source);
750 
751         return src;
752 }
753 
754 static __maybe_unused void annotated_source__delete(struct annotated_source *src)
755 {
756         if (src == NULL)
757                 return;
758         zfree(&src->histograms);
759         zfree(&src->cycles_hist);
760         free(src);
761 }
762 
763 static int annotated_source__alloc_histograms(struct annotated_source *src,
764                                               size_t size, int nr_hists)
765 {
766         size_t sizeof_sym_hist;
767 
768         /*
769          * Add buffer of one element for zero length symbol.
770          * When sample is taken from first instruction of
771          * zero length symbol, perf still resolves it and
772          * shows symbol name in perf report and allows to
773          * annotate it.
774          */
775         if (size == 0)
776                 size = 1;
777 
778         /* Check for overflow when calculating sizeof_sym_hist */
779         if (size > (SIZE_MAX - sizeof(struct sym_hist)) / sizeof(struct sym_hist_entry))
780                 return -1;
781 
782         sizeof_sym_hist = (sizeof(struct sym_hist) + size * sizeof(struct sym_hist_entry));
783 
784         /* Check for overflow in zalloc argument */
785         if (sizeof_sym_hist > SIZE_MAX / nr_hists)
786                 return -1;
787 
788         src->sizeof_sym_hist = sizeof_sym_hist;
789         src->nr_histograms   = nr_hists;
790         src->histograms      = calloc(nr_hists, sizeof_sym_hist) ;
791         return src->histograms ? 0 : -1;
792 }
793 
794 /* The cycles histogram is lazily allocated. */
795 static int symbol__alloc_hist_cycles(struct symbol *sym)
796 {
797         struct annotation *notes = symbol__annotation(sym);
798         const size_t size = symbol__size(sym);
799 
800         notes->src->cycles_hist = calloc(size, sizeof(struct cyc_hist));
801         if (notes->src->cycles_hist == NULL)
802                 return -1;
803         return 0;
804 }
805 
806 void symbol__annotate_zero_histograms(struct symbol *sym)
807 {
808         struct annotation *notes = symbol__annotation(sym);
809 
810         pthread_mutex_lock(&notes->lock);
811         if (notes->src != NULL) {
812                 memset(notes->src->histograms, 0,
813                        notes->src->nr_histograms * notes->src->sizeof_sym_hist);
814                 if (notes->src->cycles_hist)
815                         memset(notes->src->cycles_hist, 0,
816                                 symbol__size(sym) * sizeof(struct cyc_hist));
817         }
818         pthread_mutex_unlock(&notes->lock);
819 }
820 
821 static int __symbol__account_cycles(struct cyc_hist *ch,
822                                     u64 start,
823                                     unsigned offset, unsigned cycles,
824                                     unsigned have_start)
825 {
826         /*
827          * For now we can only account one basic block per
828          * final jump. But multiple could be overlapping.
829          * Always account the longest one. So when
830          * a shorter one has been already seen throw it away.
831          *
832          * We separately always account the full cycles.
833          */
834         ch[offset].num_aggr++;
835         ch[offset].cycles_aggr += cycles;
836 
837         if (cycles > ch[offset].cycles_max)
838                 ch[offset].cycles_max = cycles;
839 
840         if (ch[offset].cycles_min) {
841                 if (cycles && cycles < ch[offset].cycles_min)
842                         ch[offset].cycles_min = cycles;
843         } else
844                 ch[offset].cycles_min = cycles;
845 
846         if (!have_start && ch[offset].have_start)
847                 return 0;
848         if (ch[offset].num) {
849                 if (have_start && (!ch[offset].have_start ||
850                                    ch[offset].start > start)) {
851                         ch[offset].have_start = 0;
852                         ch[offset].cycles = 0;
853                         ch[offset].num = 0;
854                         if (ch[offset].reset < 0xffff)
855                                 ch[offset].reset++;
856                 } else if (have_start &&
857                            ch[offset].start < start)
858                         return 0;
859         }
860 
861         if (ch[offset].num < NUM_SPARKS)
862                 ch[offset].cycles_spark[ch[offset].num] = cycles;
863 
864         ch[offset].have_start = have_start;
865         ch[offset].start = start;
866         ch[offset].cycles += cycles;
867         ch[offset].num++;
868         return 0;
869 }
870 
871 static int __symbol__inc_addr_samples(struct map_symbol *ms,
872                                       struct annotated_source *src, int evidx, u64 addr,
873                                       struct perf_sample *sample)
874 {
875         struct symbol *sym = ms->sym;
876         unsigned offset;
877         struct sym_hist *h;
878 
879         pr_debug3("%s: addr=%#" PRIx64 "\n", __func__, ms->map->unmap_ip(ms->map, addr));
880 
881         if ((addr < sym->start || addr >= sym->end) &&
882             (addr != sym->end || sym->start != sym->end)) {
883                 pr_debug("%s(%d): ERANGE! sym->name=%s, start=%#" PRIx64 ", addr=%#" PRIx64 ", end=%#" PRIx64 "\n",
884                        __func__, __LINE__, sym->name, sym->start, addr, sym->end);
885                 return -ERANGE;
886         }
887 
888         offset = addr - sym->start;
889         h = annotated_source__histogram(src, evidx);
890         if (h == NULL) {
891                 pr_debug("%s(%d): ENOMEM! sym->name=%s, start=%#" PRIx64 ", addr=%#" PRIx64 ", end=%#" PRIx64 ", func: %d\n",
892                          __func__, __LINE__, sym->name, sym->start, addr, sym->end, sym->type == STT_FUNC);
893                 return -ENOMEM;
894         }
895         h->nr_samples++;
896         h->addr[offset].nr_samples++;
897         h->period += sample->period;
898         h->addr[offset].period += sample->period;
899 
900         pr_debug3("%#" PRIx64 " %s: period++ [addr: %#" PRIx64 ", %#" PRIx64
901                   ", evidx=%d] => nr_samples: %" PRIu64 ", period: %" PRIu64 "\n",
902                   sym->start, sym->name, addr, addr - sym->start, evidx,
903                   h->addr[offset].nr_samples, h->addr[offset].period);
904         return 0;
905 }
906 
907 static struct cyc_hist *symbol__cycles_hist(struct symbol *sym)
908 {
909         struct annotation *notes = symbol__annotation(sym);
910 
911         if (notes->src == NULL) {
912                 notes->src = annotated_source__new();
913                 if (notes->src == NULL)
914                         return NULL;
915                 goto alloc_cycles_hist;
916         }
917 
918         if (!notes->src->cycles_hist) {
919 alloc_cycles_hist:
920                 symbol__alloc_hist_cycles(sym);
921         }
922 
923         return notes->src->cycles_hist;
924 }
925 
926 struct annotated_source *symbol__hists(struct symbol *sym, int nr_hists)
927 {
928         struct annotation *notes = symbol__annotation(sym);
929 
930         if (notes->src == NULL) {
931                 notes->src = annotated_source__new();
932                 if (notes->src == NULL)
933                         return NULL;
934                 goto alloc_histograms;
935         }
936 
937         if (notes->src->histograms == NULL) {
938 alloc_histograms:
939                 annotated_source__alloc_histograms(notes->src, symbol__size(sym),
940                                                    nr_hists);
941         }
942 
943         return notes->src;
944 }
945 
946 static int symbol__inc_addr_samples(struct map_symbol *ms,
947                                     struct evsel *evsel, u64 addr,
948                                     struct perf_sample *sample)
949 {
950         struct symbol *sym = ms->sym;
951         struct annotated_source *src;
952 
953         if (sym == NULL)
954                 return 0;
955         src = symbol__hists(sym, evsel->evlist->core.nr_entries);
956         return src ? __symbol__inc_addr_samples(ms, src, evsel->idx, addr, sample) : 0;
957 }
958 
959 static int symbol__account_cycles(u64 addr, u64 start,
960                                   struct symbol *sym, unsigned cycles)
961 {
962         struct cyc_hist *cycles_hist;
963         unsigned offset;
964 
965         if (sym == NULL)
966                 return 0;
967         cycles_hist = symbol__cycles_hist(sym);
968         if (cycles_hist == NULL)
969                 return -ENOMEM;
970         if (addr < sym->start || addr >= sym->end)
971                 return -ERANGE;
972 
973         if (start) {
974                 if (start < sym->start || start >= sym->end)
975                         return -ERANGE;
976                 if (start >= addr)
977                         start = 0;
978         }
979         offset = addr - sym->start;
980         return __symbol__account_cycles(cycles_hist,
981                                         start ? start - sym->start : 0,
982                                         offset, cycles,
983                                         !!start);
984 }
985 
986 int addr_map_symbol__account_cycles(struct addr_map_symbol *ams,
987                                     struct addr_map_symbol *start,
988                                     unsigned cycles)
989 {
990         u64 saddr = 0;
991         int err;
992 
993         if (!cycles)
994                 return 0;
995 
996         /*
997          * Only set start when IPC can be computed. We can only
998          * compute it when the basic block is completely in a single
999          * function.
1000          * Special case the case when the jump is elsewhere, but
1001          * it starts on the function start.
1002          */
1003         if (start &&
1004                 (start->ms.sym == ams->ms.sym ||
1005                  (ams->ms.sym &&
1006                    start->addr == ams->ms.sym->start + ams->ms.map->start)))
1007                 saddr = start->al_addr;
1008         if (saddr == 0)
1009                 pr_debug2("BB with bad start: addr %"PRIx64" start %"PRIx64" sym %"PRIx64" saddr %"PRIx64"\n",
1010                         ams->addr,
1011                         start ? start->addr : 0,
1012                         ams->ms.sym ? ams->ms.sym->start + ams->ms.map->start : 0,
1013                         saddr);
1014         err = symbol__account_cycles(ams->al_addr, saddr, ams->ms.sym, cycles);
1015         if (err)
1016                 pr_debug2("account_cycles failed %d\n", err);
1017         return err;
1018 }
1019 
1020 static unsigned annotation__count_insn(struct annotation *notes, u64 start, u64 end)
1021 {
1022         unsigned n_insn = 0;
1023         u64 offset;
1024 
1025         for (offset = start; offset <= end; offset++) {
1026                 if (notes->offsets[offset])
1027                         n_insn++;
1028         }
1029         return n_insn;
1030 }
1031 
1032 static void annotation__count_and_fill(struct annotation *notes, u64 start, u64 end, struct cyc_hist *ch)
1033 {
1034         unsigned n_insn;
1035         unsigned int cover_insn = 0;
1036         u64 offset;
1037 
1038         n_insn = annotation__count_insn(notes, start, end);
1039         if (n_insn && ch->num && ch->cycles) {
1040                 float ipc = n_insn / ((double)ch->cycles / (double)ch->num);
1041 
1042                 /* Hide data when there are too many overlaps. */
1043                 if (ch->reset >= 0x7fff)
1044                         return;
1045 
1046                 for (offset = start; offset <= end; offset++) {
1047                         struct annotation_line *al = notes->offsets[offset];
1048 
1049                         if (al && al->ipc == 0.0) {
1050                                 al->ipc = ipc;
1051                                 cover_insn++;
1052                         }
1053                 }
1054 
1055                 if (cover_insn) {
1056                         notes->hit_cycles += ch->cycles;
1057                         notes->hit_insn += n_insn * ch->num;
1058                         notes->cover_insn += cover_insn;
1059                 }
1060         }
1061 }
1062 
1063 void annotation__compute_ipc(struct annotation *notes, size_t size)
1064 {
1065         s64 offset;
1066 
1067         if (!notes->src || !notes->src->cycles_hist)
1068                 return;
1069 
1070         notes->total_insn = annotation__count_insn(notes, 0, size - 1);
1071         notes->hit_cycles = 0;
1072         notes->hit_insn = 0;
1073         notes->cover_insn = 0;
1074 
1075         pthread_mutex_lock(&notes->lock);
1076         for (offset = size - 1; offset >= 0; --offset) {
1077                 struct cyc_hist *ch;
1078 
1079                 ch = &notes->src->cycles_hist[offset];
1080                 if (ch && ch->cycles) {
1081                         struct annotation_line *al;
1082 
1083                         if (ch->have_start)
1084                                 annotation__count_and_fill(notes, ch->start, offset, ch);
1085                         al = notes->offsets[offset];
1086                         if (al && ch->num_aggr) {
1087                                 al->cycles = ch->cycles_aggr / ch->num_aggr;
1088                                 al->cycles_max = ch->cycles_max;
1089                                 al->cycles_min = ch->cycles_min;
1090                         }
1091                         notes->have_cycles = true;
1092                 }
1093         }
1094         pthread_mutex_unlock(&notes->lock);
1095 }
1096 
1097 int addr_map_symbol__inc_samples(struct addr_map_symbol *ams, struct perf_sample *sample,
1098                                  struct evsel *evsel)
1099 {
1100         return symbol__inc_addr_samples(&ams->ms, evsel, ams->al_addr, sample);
1101 }
1102 
1103 int hist_entry__inc_addr_samples(struct hist_entry *he, struct perf_sample *sample,
1104                                  struct evsel *evsel, u64 ip)
1105 {
1106         return symbol__inc_addr_samples(&he->ms, evsel, ip, sample);
1107 }
1108 
1109 static void disasm_line__init_ins(struct disasm_line *dl, struct arch *arch, struct map_symbol *ms)
1110 {
1111         dl->ins.ops = ins__find(arch, dl->ins.name);
1112 
1113         if (!dl->ins.ops)
1114                 return;
1115 
1116         if (dl->ins.ops->parse && dl->ins.ops->parse(arch, &dl->ops, ms) < 0)
1117                 dl->ins.ops = NULL;
1118 }
1119 
1120 static int disasm_line__parse(char *line, const char **namep, char **rawp)
1121 {
1122         char tmp, *name = skip_spaces(line);
1123 
1124         if (name[0] == '\0')
1125                 return -1;
1126 
1127         *rawp = name + 1;
1128 
1129         while ((*rawp)[0] != '\0' && !isspace((*rawp)[0]))
1130                 ++*rawp;
1131 
1132         tmp = (*rawp)[0];
1133         (*rawp)[0] = '\0';
1134         *namep = strdup(name);
1135 
1136         if (*namep == NULL)
1137                 goto out;
1138 
1139         (*rawp)[0] = tmp;
1140         *rawp = strim(*rawp);
1141 
1142         return 0;
1143 
1144 out:
1145         return -1;
1146 }
1147 
1148 struct annotate_args {
1149         struct arch               *arch;
1150         struct map_symbol         ms;
1151         struct evsel              *evsel;
1152         struct annotation_options *options;
1153         s64                       offset;
1154         char                      *line;
1155         int                       line_nr;
1156 };
1157 
1158 static void annotation_line__init(struct annotation_line *al,
1159                                   struct annotate_args *args,
1160                                   int nr)
1161 {
1162         al->offset = args->offset;
1163         al->line = strdup(args->line);
1164         al->line_nr = args->line_nr;
1165         al->data_nr = nr;
1166 }
1167 
1168 static void annotation_line__exit(struct annotation_line *al)
1169 {
1170         free_srcline(al->path);
1171         zfree(&al->line);
1172 }
1173 
1174 static size_t disasm_line_size(int nr)
1175 {
1176         struct annotation_line *al;
1177 
1178         return (sizeof(struct disasm_line) + (sizeof(al->data[0]) * nr));
1179 }
1180 
1181 /*
1182  * Allocating the disasm annotation line data with
1183  * following structure:
1184  *
1185  *    -------------------------------------------
1186  *    struct disasm_line | struct annotation_line
1187  *    -------------------------------------------
1188  *
1189  * We have 'struct annotation_line' member as last member
1190  * of 'struct disasm_line' to have an easy access.
1191  */
1192 static struct disasm_line *disasm_line__new(struct annotate_args *args)
1193 {
1194         struct disasm_line *dl = NULL;
1195         int nr = 1;
1196 
1197         if (evsel__is_group_event(args->evsel))
1198                 nr = args->evsel->core.nr_members;
1199 
1200         dl = zalloc(disasm_line_size(nr));
1201         if (!dl)
1202                 return NULL;
1203 
1204         annotation_line__init(&dl->al, args, nr);
1205         if (dl->al.line == NULL)
1206                 goto out_delete;
1207 
1208         if (args->offset != -1) {
1209                 if (disasm_line__parse(dl->al.line, &dl->ins.name, &dl->ops.raw) < 0)
1210                         goto out_free_line;
1211 
1212                 disasm_line__init_ins(dl, args->arch, &args->ms);
1213         }
1214 
1215         return dl;
1216 
1217 out_free_line:
1218         zfree(&dl->al.line);
1219 out_delete:
1220         free(dl);
1221         return NULL;
1222 }
1223 
1224 void disasm_line__free(struct disasm_line *dl)
1225 {
1226         if (dl->ins.ops && dl->ins.ops->free)
1227                 dl->ins.ops->free(&dl->ops);
1228         else
1229                 ins__delete(&dl->ops);
1230         zfree(&dl->ins.name);
1231         annotation_line__exit(&dl->al);
1232         free(dl);
1233 }
1234 
1235 int disasm_line__scnprintf(struct disasm_line *dl, char *bf, size_t size, bool raw, int max_ins_name)
1236 {
1237         if (raw || !dl->ins.ops)
1238                 return scnprintf(bf, size, "%-*s %s", max_ins_name, dl->ins.name, dl->ops.raw);
1239 
1240         return ins__scnprintf(&dl->ins, bf, size, &dl->ops, max_ins_name);
1241 }
1242 
1243 static void annotation_line__add(struct annotation_line *al, struct list_head *head)
1244 {
1245         list_add_tail(&al->node, head);
1246 }
1247 
1248 struct annotation_line *
1249 annotation_line__next(struct annotation_line *pos, struct list_head *head)
1250 {
1251         list_for_each_entry_continue(pos, head, node)
1252                 if (pos->offset >= 0)
1253                         return pos;
1254 
1255         return NULL;
1256 }
1257 
1258 static const char *annotate__address_color(struct block_range *br)
1259 {
1260         double cov = block_range__coverage(br);
1261 
1262         if (cov >= 0) {
1263                 /* mark red for >75% coverage */
1264                 if (cov > 0.75)
1265                         return PERF_COLOR_RED;
1266 
1267                 /* mark dull for <1% coverage */
1268                 if (cov < 0.01)
1269                         return PERF_COLOR_NORMAL;
1270         }
1271 
1272         return PERF_COLOR_MAGENTA;
1273 }
1274 
1275 static const char *annotate__asm_color(struct block_range *br)
1276 {
1277         double cov = block_range__coverage(br);
1278 
1279         if (cov >= 0) {
1280                 /* mark dull for <1% coverage */
1281                 if (cov < 0.01)
1282                         return PERF_COLOR_NORMAL;
1283         }
1284 
1285         return PERF_COLOR_BLUE;
1286 }
1287 
1288 static void annotate__branch_printf(struct block_range *br, u64 addr)
1289 {
1290         bool emit_comment = true;
1291 
1292         if (!br)
1293                 return;
1294 
1295 #if 1
1296         if (br->is_target && br->start == addr) {
1297                 struct block_range *branch = br;
1298                 double p;
1299 
1300                 /*
1301                  * Find matching branch to our target.
1302                  */
1303                 while (!branch->is_branch)
1304                         branch = block_range__next(branch);
1305 
1306                 p = 100 *(double)br->entry / branch->coverage;
1307 
1308                 if (p > 0.1) {
1309                         if (emit_comment) {
1310                                 emit_comment = false;
1311                                 printf("\t#");
1312                         }
1313 
1314                         /*
1315                          * The percentage of coverage joined at this target in relation
1316                          * to the next branch.
1317                          */
1318                         printf(" +%.2f%%", p);
1319                 }
1320         }
1321 #endif
1322         if (br->is_branch && br->end == addr) {
1323                 double p = 100*(double)br->taken / br->coverage;
1324 
1325                 if (p > 0.1) {
1326                         if (emit_comment) {
1327                                 emit_comment = false;
1328                                 printf("\t#");
1329                         }
1330 
1331                         /*
1332                          * The percentage of coverage leaving at this branch, and
1333                          * its prediction ratio.
1334                          */
1335                         printf(" -%.2f%% (p:%.2f%%)", p, 100*(double)br->pred  / br->taken);
1336                 }
1337         }
1338 }
1339 
1340 static int disasm_line__print(struct disasm_line *dl, u64 start, int addr_fmt_width)
1341 {
1342         s64 offset = dl->al.offset;
1343         const u64 addr = start + offset;
1344         struct block_range *br;
1345 
1346         br = block_range__find(addr);
1347         color_fprintf(stdout, annotate__address_color(br), "  %*" PRIx64 ":", addr_fmt_width, addr);
1348         color_fprintf(stdout, annotate__asm_color(br), "%s", dl->al.line);
1349         annotate__branch_printf(br, addr);
1350         return 0;
1351 }
1352 
1353 static int
1354 annotation_line__print(struct annotation_line *al, struct symbol *sym, u64 start,
1355                        struct evsel *evsel, u64 len, int min_pcnt, int printed,
1356                        int max_lines, struct annotation_line *queue, int addr_fmt_width,
1357                        int percent_type)
1358 {
1359         struct disasm_line *dl = container_of(al, struct disasm_line, al);
1360         static const char *prev_line;
1361         static const char *prev_color;
1362 
1363         if (al->offset != -1) {
1364                 double max_percent = 0.0;
1365                 int i, nr_percent = 1;
1366                 const char *color;
1367                 struct annotation *notes = symbol__annotation(sym);
1368 
1369                 for (i = 0; i < al->data_nr; i++) {
1370                         double percent;
1371 
1372                         percent = annotation_data__percent(&al->data[i],
1373                                                            percent_type);
1374 
1375                         if (percent > max_percent)
1376                                 max_percent = percent;
1377                 }
1378 
1379                 if (al->data_nr > nr_percent)
1380                         nr_percent = al->data_nr;
1381 
1382                 if (max_percent < min_pcnt)
1383                         return -1;
1384 
1385                 if (max_lines && printed >= max_lines)
1386                         return 1;
1387 
1388                 if (queue != NULL) {
1389                         list_for_each_entry_from(queue, &notes->src->source, node) {
1390                                 if (queue == al)
1391                                         break;
1392                                 annotation_line__print(queue, sym, start, evsel, len,
1393                                                        0, 0, 1, NULL, addr_fmt_width,
1394                                                        percent_type);
1395                         }
1396                 }
1397 
1398                 color = get_percent_color(max_percent);
1399 
1400                 /*
1401                  * Also color the filename and line if needed, with
1402                  * the same color than the percentage. Don't print it
1403                  * twice for close colored addr with the same filename:line
1404                  */
1405                 if (al->path) {
1406                         if (!prev_line || strcmp(prev_line, al->path)
1407                                        || color != prev_color) {
1408                                 color_fprintf(stdout, color, " %s", al->path);
1409                                 prev_line = al->path;
1410                                 prev_color = color;
1411                         }
1412                 }
1413 
1414                 for (i = 0; i < nr_percent; i++) {
1415                         struct annotation_data *data = &al->data[i];
1416                         double percent;
1417 
1418                         percent = annotation_data__percent(data, percent_type);
1419                         color = get_percent_color(percent);
1420 
1421                         if (symbol_conf.show_total_period)
1422                                 color_fprintf(stdout, color, " %11" PRIu64,
1423                                               data->he.period);
1424                         else if (symbol_conf.show_nr_samples)
1425                                 color_fprintf(stdout, color, " %7" PRIu64,
1426                                               data->he.nr_samples);
1427                         else
1428                                 color_fprintf(stdout, color, " %7.2f", percent);
1429                 }
1430 
1431                 printf(" : ");
1432 
1433                 disasm_line__print(dl, start, addr_fmt_width);
1434                 printf("\n");
1435         } else if (max_lines && printed >= max_lines)
1436                 return 1;
1437         else {
1438                 int width = symbol_conf.show_total_period ? 12 : 8;
1439 
1440                 if (queue)
1441                         return -1;
1442 
1443                 if (evsel__is_group_event(evsel))
1444                         width *= evsel->core.nr_members;
1445 
1446                 if (!*al->line)
1447                         printf(" %*s:\n", width, " ");
1448                 else
1449                         printf(" %*s:     %*s %s\n", width, " ", addr_fmt_width, " ", al->line);
1450         }
1451 
1452         return 0;
1453 }
1454 
1455 /*
1456  * symbol__parse_objdump_line() parses objdump output (with -d --no-show-raw)
1457  * which looks like following
1458  *
1459  *  0000000000415500 <_init>:
1460  *    415500:       sub    $0x8,%rsp
1461  *    415504:       mov    0x2f5ad5(%rip),%rax        # 70afe0 <_DYNAMIC+0x2f8>
1462  *    41550b:       test   %rax,%rax
1463  *    41550e:       je     415515 <_init+0x15>
1464  *    415510:       callq  416e70 <__gmon_start__@plt>
1465  *    415515:       add    $0x8,%rsp
1466  *    415519:       retq
1467  *
1468  * it will be parsed and saved into struct disasm_line as
1469  *  <offset>       <name>  <ops.raw>
1470  *
1471  * The offset will be a relative offset from the start of the symbol and -1
1472  * means that it's not a disassembly line so should be treated differently.
1473  * The ops.raw part will be parsed further according to type of the instruction.
1474  */
1475 static int symbol__parse_objdump_line(struct symbol *sym,
1476                                       struct annotate_args *args,
1477                                       char *parsed_line, int *line_nr)
1478 {
1479         struct map *map = args->ms.map;
1480         struct annotation *notes = symbol__annotation(sym);
1481         struct disasm_line *dl;
1482         char *tmp;
1483         s64 line_ip, offset = -1;
1484         regmatch_t match[2];
1485 
1486         /* /filename:linenr ? Save line number and ignore. */
1487         if (regexec(&file_lineno, parsed_line, 2, match, 0) == 0) {
1488                 *line_nr = atoi(parsed_line + match[1].rm_so);
1489                 return 0;
1490         }
1491 
1492         /* Process hex address followed by ':'. */
1493         line_ip = strtoull(parsed_line, &tmp, 16);
1494         if (parsed_line != tmp && tmp[0] == ':' && tmp[1] != '\0') {
1495                 u64 start = map__rip_2objdump(map, sym->start),
1496                     end = map__rip_2objdump(map, sym->end);
1497 
1498                 offset = line_ip - start;
1499                 if ((u64)line_ip < start || (u64)line_ip >= end)
1500                         offset = -1;
1501                 else
1502                         parsed_line = tmp + 1;
1503         }
1504 
1505         args->offset  = offset;
1506         args->line    = parsed_line;
1507         args->line_nr = *line_nr;
1508         args->ms.sym  = sym;
1509 
1510         dl = disasm_line__new(args);
1511         (*line_nr)++;
1512 
1513         if (dl == NULL)
1514                 return -1;
1515 
1516         if (!disasm_line__has_local_offset(dl)) {
1517                 dl->ops.target.offset = dl->ops.target.addr -
1518                                         map__rip_2objdump(map, sym->start);
1519                 dl->ops.target.offset_avail = true;
1520         }
1521 
1522         /* kcore has no symbols, so add the call target symbol */
1523         if (dl->ins.ops && ins__is_call(&dl->ins) && !dl->ops.target.sym) {
1524                 struct addr_map_symbol target = {
1525                         .addr = dl->ops.target.addr,
1526                         .ms = { .map = map, },
1527                 };
1528 
1529                 if (!maps__find_ams(args->ms.maps, &target) &&
1530                     target.ms.sym->start == target.al_addr)
1531                         dl->ops.target.sym = target.ms.sym;
1532         }
1533 
1534         annotation_line__add(&dl->al, &notes->src->source);
1535 
1536         return 0;
1537 }
1538 
1539 static __attribute__((constructor)) void symbol__init_regexpr(void)
1540 {
1541         regcomp(&file_lineno, "^/[^:]+:([0-9]+)", REG_EXTENDED);
1542 }
1543 
1544 static void delete_last_nop(struct symbol *sym)
1545 {
1546         struct annotation *notes = symbol__annotation(sym);
1547         struct list_head *list = &notes->src->source;
1548         struct disasm_line *dl;
1549 
1550         while (!list_empty(list)) {
1551                 dl = list_entry(list->prev, struct disasm_line, al.node);
1552 
1553                 if (dl->ins.ops) {
1554                         if (dl->ins.ops != &nop_ops)
1555                                 return;
1556                 } else {
1557                         if (!strstr(dl->al.line, " nop ") &&
1558                             !strstr(dl->al.line, " nopl ") &&
1559                             !strstr(dl->al.line, " nopw "))
1560                                 return;
1561                 }
1562 
1563                 list_del_init(&dl->al.node);
1564                 disasm_line__free(dl);
1565         }
1566 }
1567 
1568 int symbol__strerror_disassemble(struct map_symbol *ms, int errnum, char *buf, size_t buflen)
1569 {
1570         struct dso *dso = ms->map->dso;
1571 
1572         BUG_ON(buflen == 0);
1573 
1574         if (errnum >= 0) {
1575                 str_error_r(errnum, buf, buflen);
1576                 return 0;
1577         }
1578 
1579         switch (errnum) {
1580         case SYMBOL_ANNOTATE_ERRNO__NO_VMLINUX: {
1581                 char bf[SBUILD_ID_SIZE + 15] = " with build id ";
1582                 char *build_id_msg = NULL;
1583 
1584                 if (dso->has_build_id) {
1585                         build_id__sprintf(&dso->bid, bf + 15);
1586                         build_id_msg = bf;
1587                 }
1588                 scnprintf(buf, buflen,
1589                           "No vmlinux file%s\nwas found in the path.\n\n"
1590                           "Note that annotation using /proc/kcore requires CAP_SYS_RAWIO capability.\n\n"
1591                           "Please use:\n\n"
1592                           "  perf buildid-cache -vu vmlinux\n\n"
1593                           "or:\n\n"
1594                           "  --vmlinux vmlinux\n", build_id_msg ?: "");
1595         }
1596                 break;
1597         case SYMBOL_ANNOTATE_ERRNO__NO_LIBOPCODES_FOR_BPF:
1598                 scnprintf(buf, buflen, "Please link with binutils's libopcode to enable BPF annotation");
1599                 break;
1600         case SYMBOL_ANNOTATE_ERRNO__ARCH_INIT_REGEXP:
1601                 scnprintf(buf, buflen, "Problems with arch specific instruction name regular expressions.");
1602                 break;
1603         case SYMBOL_ANNOTATE_ERRNO__ARCH_INIT_CPUID_PARSING:
1604                 scnprintf(buf, buflen, "Problems while parsing the CPUID in the arch specific initialization.");
1605                 break;
1606         case SYMBOL_ANNOTATE_ERRNO__BPF_INVALID_FILE:
1607                 scnprintf(buf, buflen, "Invalid BPF file: %s.", dso->long_name);
1608                 break;
1609         case SYMBOL_ANNOTATE_ERRNO__BPF_MISSING_BTF:
1610                 scnprintf(buf, buflen, "The %s BPF file has no BTF section, compile with -g or use pahole -J.",
1611                           dso->long_name);
1612                 break;
1613         default:
1614                 scnprintf(buf, buflen, "Internal error: Invalid %d error code\n", errnum);
1615                 break;
1616         }
1617 
1618         return 0;
1619 }
1620 
1621 static int dso__disassemble_filename(struct dso *dso, char *filename, size_t filename_size)
1622 {
1623         char linkname[PATH_MAX];
1624         char *build_id_filename;
1625         char *build_id_path = NULL;
1626         char *pos;
1627         int len;
1628 
1629         if (dso->symtab_type == DSO_BINARY_TYPE__KALLSYMS &&
1630             !dso__is_kcore(dso))
1631                 return SYMBOL_ANNOTATE_ERRNO__NO_VMLINUX;
1632 
1633         build_id_filename = dso__build_id_filename(dso, NULL, 0, false);
1634         if (build_id_filename) {
1635                 __symbol__join_symfs(filename, filename_size, build_id_filename);
1636                 free(build_id_filename);
1637         } else {
1638                 if (dso->has_build_id)
1639                         return ENOMEM;
1640                 goto fallback;
1641         }
1642 
1643         build_id_path = strdup(filename);
1644         if (!build_id_path)
1645                 return ENOMEM;
1646 
1647         /*
1648          * old style build-id cache has name of XX/XXXXXXX.. while
1649          * new style has XX/XXXXXXX../{elf,kallsyms,vdso}.
1650          * extract the build-id part of dirname in the new style only.
1651          */
1652         pos = strrchr(build_id_path, '/');
1653         if (pos && strlen(pos) < SBUILD_ID_SIZE - 2)
1654                 dirname(build_id_path);
1655 
1656         if (dso__is_kcore(dso))
1657                 goto fallback;
1658 
1659         len = readlink(build_id_path, linkname, sizeof(linkname) - 1);
1660         if (len < 0)
1661                 goto fallback;
1662 
1663         linkname[len] = '\0';
1664         if (strstr(linkname, DSO__NAME_KALLSYMS) ||
1665                 access(filename, R_OK)) {
1666 fallback:
1667                 /*
1668                  * If we don't have build-ids or the build-id file isn't in the
1669                  * cache, or is just a kallsyms file, well, lets hope that this
1670                  * DSO is the same as when 'perf record' ran.
1671                  */
1672                 __symbol__join_symfs(filename, filename_size, dso->long_name);
1673         }
1674 
1675         free(build_id_path);
1676         return 0;
1677 }
1678 
1679 #if defined(HAVE_LIBBFD_SUPPORT) && defined(HAVE_LIBBPF_SUPPORT)
1680 #define PACKAGE "perf"
1681 #include <bfd.h>
1682 #include <dis-asm.h>
1683 #include <bpf/bpf.h>
1684 #include <bpf/btf.h>
1685 #include <bpf/libbpf.h>
1686 #include <linux/btf.h>
1687 
1688 static int symbol__disassemble_bpf(struct symbol *sym,
1689                                    struct annotate_args *args)
1690 {
1691         struct annotation *notes = symbol__annotation(sym);
1692         struct annotation_options *opts = args->options;
1693         struct bpf_prog_info_linear *info_linear;
1694         struct bpf_prog_linfo *prog_linfo = NULL;
1695         struct bpf_prog_info_node *info_node;
1696         int len = sym->end - sym->start;
1697         disassembler_ftype disassemble;
1698         struct map *map = args->ms.map;
1699         struct disassemble_info info;
1700         struct dso *dso = map->dso;
1701         int pc = 0, count, sub_id;
1702         struct btf *btf = NULL;
1703         char tpath[PATH_MAX];
1704         size_t buf_size;
1705         int nr_skip = 0;
1706         char *buf;
1707         bfd *bfdf;
1708         int ret;
1709         FILE *s;
1710 
1711         if (dso->binary_type != DSO_BINARY_TYPE__BPF_PROG_INFO)
1712                 return SYMBOL_ANNOTATE_ERRNO__BPF_INVALID_FILE;
1713 
1714         pr_debug("%s: handling sym %s addr %" PRIx64 " len %" PRIx64 "\n", __func__,
1715                   sym->name, sym->start, sym->end - sym->start);
1716 
1717         memset(tpath, 0, sizeof(tpath));
1718         perf_exe(tpath, sizeof(tpath));
1719 
1720         bfdf = bfd_openr(tpath, NULL);
1721         assert(bfdf);
1722         assert(bfd_check_format(bfdf, bfd_object));
1723 
1724         s = open_memstream(&buf, &buf_size);
1725         if (!s) {
1726                 ret = errno;
1727                 goto out;
1728         }
1729         init_disassemble_info(&info, s,
1730                               (fprintf_ftype) fprintf);
1731 
1732         info.arch = bfd_get_arch(bfdf);
1733         info.mach = bfd_get_mach(bfdf);
1734 
1735         info_node = perf_env__find_bpf_prog_info(dso->bpf_prog.env,
1736                                                  dso->bpf_prog.id);
1737         if (!info_node) {
1738                 ret = SYMBOL_ANNOTATE_ERRNO__BPF_MISSING_BTF;
1739                 goto out;
1740         }
1741         info_linear = info_node->info_linear;
1742         sub_id = dso->bpf_prog.sub_id;
1743 
1744         info.buffer = (void *)(uintptr_t)(info_linear->info.jited_prog_insns);
1745         info.buffer_length = info_linear->info.jited_prog_len;
1746 
1747         if (info_linear->info.nr_line_info)
1748                 prog_linfo = bpf_prog_linfo__new(&info_linear->info);
1749 
1750         if (info_linear->info.btf_id) {
1751                 struct btf_node *node;
1752 
1753                 node = perf_env__find_btf(dso->bpf_prog.env,
1754                                           info_linear->info.btf_id);
1755                 if (node)
1756                         btf = btf__new((__u8 *)(node->data),
1757                                        node->data_size);
1758         }
1759 
1760         disassemble_init_for_target(&info);
1761 
1762 #ifdef DISASM_FOUR_ARGS_SIGNATURE
1763         disassemble = disassembler(info.arch,
1764                                    bfd_big_endian(bfdf),
1765                                    info.mach,
1766                                    bfdf);
1767 #else
1768         disassemble = disassembler(bfdf);
1769 #endif
1770         assert(disassemble);
1771 
1772         fflush(s);
1773         do {
1774                 const struct bpf_line_info *linfo = NULL;
1775                 struct disasm_line *dl;
1776                 size_t prev_buf_size;
1777                 const char *srcline;
1778                 u64 addr;
1779 
1780                 addr = pc + ((u64 *)(uintptr_t)(info_linear->info.jited_ksyms))[sub_id];
1781                 count = disassemble(pc, &info);
1782 
1783                 if (prog_linfo)
1784                         linfo = bpf_prog_linfo__lfind_addr_func(prog_linfo,
1785                                                                 addr, sub_id,
1786                                                                 nr_skip);
1787 
1788                 if (linfo && btf) {
1789                         srcline = btf__name_by_offset(btf, linfo->line_off);
1790                         nr_skip++;
1791                 } else
1792                         srcline = NULL;
1793 
1794                 fprintf(s, "\n");
1795                 prev_buf_size = buf_size;
1796                 fflush(s);
1797 
1798                 if (!opts->hide_src_code && srcline) {
1799                         args->offset = -1;
1800                         args->line = strdup(srcline);
1801                         args->line_nr = 0;
1802                         args->ms.sym  = sym;
1803                         dl = disasm_line__new(args);
1804                         if (dl) {
1805                                 annotation_line__add(&dl->al,
1806                                                      &notes->src->source);
1807                         }
1808                 }
1809 
1810                 args->offset = pc;
1811                 args->line = buf + prev_buf_size;
1812                 args->line_nr = 0;
1813                 args->ms.sym  = sym;
1814                 dl = disasm_line__new(args);
1815                 if (dl)
1816                         annotation_line__add(&dl->al, &notes->src->source);
1817 
1818                 pc += count;
1819         } while (count > 0 && pc < len);
1820 
1821         ret = 0;
1822 out:
1823         free(prog_linfo);
1824         free(btf);
1825         fclose(s);
1826         bfd_close(bfdf);
1827         return ret;
1828 }
1829 #else // defined(HAVE_LIBBFD_SUPPORT) && defined(HAVE_LIBBPF_SUPPORT)
1830 static int symbol__disassemble_bpf(struct symbol *sym __maybe_unused,
1831                                    struct annotate_args *args __maybe_unused)
1832 {
1833         return SYMBOL_ANNOTATE_ERRNO__NO_LIBOPCODES_FOR_BPF;
1834 }
1835 #endif // defined(HAVE_LIBBFD_SUPPORT) && defined(HAVE_LIBBPF_SUPPORT)
1836 
1837 static int
1838 symbol__disassemble_bpf_image(struct symbol *sym,
1839                               struct annotate_args *args)
1840 {
1841         struct annotation *notes = symbol__annotation(sym);
1842         struct disasm_line *dl;
1843 
1844         args->offset = -1;
1845         args->line = strdup("to be implemented");
1846         args->line_nr = 0;
1847         dl = disasm_line__new(args);
1848         if (dl)
1849                 annotation_line__add(&dl->al, &notes->src->source);
1850 
1851         free(args->line);
1852         return 0;
1853 }
1854 
1855 /*
1856  * Possibly create a new version of line with tabs expanded. Returns the
1857  * existing or new line, storage is updated if a new line is allocated. If
1858  * allocation fails then NULL is returned.
1859  */
1860 static char *expand_tabs(char *line, char **storage, size_t *storage_len)
1861 {
1862         size_t i, src, dst, len, new_storage_len, num_tabs;
1863         char *new_line;
1864         size_t line_len = strlen(line);
1865 
1866         for (num_tabs = 0, i = 0; i < line_len; i++)
1867                 if (line[i] == '\t')
1868                         num_tabs++;
1869 
1870         if (num_tabs == 0)
1871                 return line;
1872 
1873         /*
1874          * Space for the line and '\0', less the leading and trailing
1875          * spaces. Each tab may introduce 7 additional spaces.
1876          */
1877         new_storage_len = line_len + 1 + (num_tabs * 7);
1878 
1879         new_line = malloc(new_storage_len);
1880         if (new_line == NULL) {
1881                 pr_err("Failure allocating memory for tab expansion\n");
1882                 return NULL;
1883         }
1884 
1885         /*
1886          * Copy regions starting at src and expand tabs. If there are two
1887          * adjacent tabs then 'src == i', the memcpy is of size 0 and the spaces
1888          * are inserted.
1889          */
1890         for (i = 0, src = 0, dst = 0; i < line_len && num_tabs; i++) {
1891                 if (line[i] == '\t') {
1892                         len = i - src;
1893                         memcpy(&new_line[dst], &line[src], len);
1894                         dst += len;
1895                         new_line[dst++] = ' ';
1896                         while (dst % 8 != 0)
1897                                 new_line[dst++] = ' ';
1898                         src = i + 1;
1899                         num_tabs--;
1900                 }
1901         }
1902 
1903         /* Expand the last region. */
1904         len = line_len - src;
1905         memcpy(&new_line[dst], &line[src], len);
1906         dst += len;
1907         new_line[dst] = '\0';
1908 
1909         free(*storage);
1910         *storage = new_line;
1911         *storage_len = new_storage_len;
1912         return new_line;
1913 
1914 }
1915 
1916 static int symbol__disassemble(struct symbol *sym, struct annotate_args *args)
1917 {
1918         struct annotation_options *opts = args->options;
1919         struct map *map = args->ms.map;
1920         struct dso *dso = map->dso;
1921         char *command;
1922         FILE *file;
1923         char symfs_filename[PATH_MAX];
1924         struct kcore_extract kce;
1925         bool delete_extract = false;
1926         bool decomp = false;
1927         int lineno = 0;
1928         int nline;
1929         char *line;
1930         size_t line_len;
1931         const char *objdump_argv[] = {
1932                 "/bin/sh",
1933                 "-c",
1934                 NULL, /* Will be the objdump command to run. */
1935                 "--",
1936                 NULL, /* Will be the symfs path. */
1937                 NULL,
1938         };
1939         struct child_process objdump_process;
1940         int err = dso__disassemble_filename(dso, symfs_filename, sizeof(symfs_filename));
1941 
1942         if (err)
1943                 return err;
1944 
1945         pr_debug("%s: filename=%s, sym=%s, start=%#" PRIx64 ", end=%#" PRIx64 "\n", __func__,
1946                  symfs_filename, sym->name, map->unmap_ip(map, sym->start),
1947                  map->unmap_ip(map, sym->end));
1948 
1949         pr_debug("annotating [%p] %30s : [%p] %30s\n",
1950                  dso, dso->long_name, sym, sym->name);
1951 
1952         if (dso->binary_type == DSO_BINARY_TYPE__BPF_PROG_INFO) {
1953                 return symbol__disassemble_bpf(sym, args);
1954         } else if (dso->binary_type == DSO_BINARY_TYPE__BPF_IMAGE) {
1955                 return symbol__disassemble_bpf_image(sym, args);
1956         } else if (dso__is_kcore(dso)) {
1957                 kce.kcore_filename = symfs_filename;
1958                 kce.addr = map__rip_2objdump(map, sym->start);
1959                 kce.offs = sym->start;
1960                 kce.len = sym->end - sym->start;
1961                 if (!kcore_extract__create(&kce)) {
1962                         delete_extract = true;
1963                         strlcpy(symfs_filename, kce.extract_filename,
1964                                 sizeof(symfs_filename));
1965                 }
1966         } else if (dso__needs_decompress(dso)) {
1967                 char tmp[KMOD_DECOMP_LEN];
1968 
1969                 if (dso__decompress_kmodule_path(dso, symfs_filename,
1970                                                  tmp, sizeof(tmp)) < 0)
1971                         return -1;
1972 
1973                 decomp = true;
1974                 strcpy(symfs_filename, tmp);
1975         }
1976 
1977         err = asprintf(&command,
1978                  "%s %s%s --start-address=0x%016" PRIx64
1979                  " --stop-address=0x%016" PRIx64
1980                  " -l -d %s %s %s %c%s%c %s%s -C \"$1\"",
1981                  opts->objdump_path ?: "objdump",
1982                  opts->disassembler_style ? "-M " : "",
1983                  opts->disassembler_style ?: "",
1984                  map__rip_2objdump(map, sym->start),
1985                  map__rip_2objdump(map, sym->end),
1986                  opts->show_asm_raw ? "" : "--no-show-raw-insn",
1987                  opts->annotate_src ? "-S" : "",
1988                  opts->prefix ? "--prefix " : "",
1989                  opts->prefix ? '"' : ' ',
1990                  opts->prefix ?: "",
1991                  opts->prefix ? '"' : ' ',
1992                  opts->prefix_strip ? "--prefix-strip=" : "",
1993                  opts->prefix_strip ?: "");
1994 
1995         if (err < 0) {
1996                 pr_err("Failure allocating memory for the command to run\n");
1997                 goto out_remove_tmp;
1998         }
1999 
2000         pr_debug("Executing: %s\n", command);
2001 
2002         objdump_argv[2] = command;
2003         objdump_argv[4] = symfs_filename;
2004 
2005         /* Create a pipe to read from for stdout */
2006         memset(&objdump_process, 0, sizeof(objdump_process));
2007         objdump_process.argv = objdump_argv;
2008         objdump_process.out = -1;
2009         if (start_command(&objdump_process)) {
2010                 pr_err("Failure starting to run %s\n", command);
2011                 err = -1;
2012                 goto out_free_command;
2013         }
2014 
2015         file = fdopen(objdump_process.out, "r");
2016         if (!file) {
2017                 pr_err("Failure creating FILE stream for %s\n", command);
2018                 /*
2019                  * If we were using debug info should retry with
2020                  * original binary.
2021                  */
2022                 err = -1;
2023                 goto out_close_stdout;
2024         }
2025 
2026         /* Storage for getline. */
2027         line = NULL;
2028         line_len = 0;
2029 
2030         nline = 0;
2031         while (!feof(file)) {
2032                 const char *match;
2033                 char *expanded_line;
2034 
2035                 if (getline(&line, &line_len, file) < 0 || !line)
2036                         break;
2037 
2038                 /* Skip lines containing "filename:" */
2039                 match = strstr(line, symfs_filename);
2040                 if (match && match[strlen(symfs_filename)] == ':')
2041                         continue;
2042 
2043                 expanded_line = strim(line);
2044                 expanded_line = expand_tabs(expanded_line, &line, &line_len);
2045                 if (!expanded_line)
2046                         break;
2047 
2048                 /*
2049                  * The source code line number (lineno) needs to be kept in
2050                  * across calls to symbol__parse_objdump_line(), so that it
2051                  * can associate it with the instructions till the next one.
2052                  * See disasm_line__new() and struct disasm_line::line_nr.
2053                  */
2054                 if (symbol__parse_objdump_line(sym, args, expanded_line,
2055                                                &lineno) < 0)
2056                         break;
2057                 nline++;
2058         }
2059         free(line);
2060 
2061         err = finish_command(&objdump_process);
2062         if (err)
2063                 pr_err("Error running %s\n", command);
2064 
2065         if (nline == 0) {
2066                 err = -1;
2067                 pr_err("No output from %s\n", command);
2068         }
2069 
2070         /*
2071          * kallsyms does not have symbol sizes so there may a nop at the end.
2072          * Remove it.
2073          */
2074         if (dso__is_kcore(dso))
2075                 delete_last_nop(sym);
2076 
2077         fclose(file);
2078 
2079 out_close_stdout:
2080         close(objdump_process.out);
2081 
2082 out_free_command:
2083         free(command);
2084 
2085 out_remove_tmp:
2086         if (decomp)
2087                 unlink(symfs_filename);
2088 
2089         if (delete_extract)
2090                 kcore_extract__delete(&kce);
2091 
2092         return err;
2093 }
2094 
2095 static void calc_percent(struct sym_hist *sym_hist,
2096                          struct hists *hists,
2097                          struct annotation_data *data,
2098                          s64 offset, s64 end)
2099 {
2100         unsigned int hits = 0;
2101         u64 period = 0;
2102 
2103         while (offset < end) {
2104                 hits   += sym_hist->addr[offset].nr_samples;
2105                 period += sym_hist->addr[offset].period;
2106                 ++offset;
2107         }
2108 
2109         if (sym_hist->nr_samples) {
2110                 data->he.period     = period;
2111                 data->he.nr_samples = hits;
2112                 data->percent[PERCENT_HITS_LOCAL] = 100.0 * hits / sym_hist->nr_samples;
2113         }
2114 
2115         if (hists->stats.nr_non_filtered_samples)
2116                 data->percent[PERCENT_HITS_GLOBAL] = 100.0 * hits / hists->stats.nr_non_filtered_samples;
2117 
2118         if (sym_hist->period)
2119                 data->percent[PERCENT_PERIOD_LOCAL] = 100.0 * period / sym_hist->period;
2120 
2121         if (hists->stats.total_period)
2122                 data->percent[PERCENT_PERIOD_GLOBAL] = 100.0 * period / hists->stats.total_period;
2123 }
2124 
2125 static void annotation__calc_percent(struct annotation *notes,
2126                                      struct evsel *leader, s64 len)
2127 {
2128         struct annotation_line *al, *next;
2129         struct evsel *evsel;
2130 
2131         list_for_each_entry(al, &notes->src->source, node) {
2132                 s64 end;
2133                 int i = 0;
2134 
2135                 if (al->offset == -1)
2136                         continue;
2137 
2138                 next = annotation_line__next(al, &notes->src->source);
2139                 end  = next ? next->offset : len;
2140 
2141                 for_each_group_evsel(evsel, leader) {
2142                         struct hists *hists = evsel__hists(evsel);
2143                         struct annotation_data *data;
2144                         struct sym_hist *sym_hist;
2145 
2146                         BUG_ON(i >= al->data_nr);
2147 
2148                         sym_hist = annotation__histogram(notes, evsel->idx);
2149                         data = &al->data[i++];
2150 
2151                         calc_percent(sym_hist, hists, data, al->offset, end);
2152                 }
2153         }
2154 }
2155 
2156 void symbol__calc_percent(struct symbol *sym, struct evsel *evsel)
2157 {
2158         struct annotation *notes = symbol__annotation(sym);
2159 
2160         annotation__calc_percent(notes, evsel, symbol__size(sym));
2161 }
2162 
2163 int symbol__annotate(struct map_symbol *ms, struct evsel *evsel,
2164                      struct annotation_options *options, struct arch **parch)
2165 {
2166         struct symbol *sym = ms->sym;
2167         struct annotation *notes = symbol__annotation(sym);
2168         struct annotate_args args = {
2169                 .evsel          = evsel,
2170                 .options        = options,
2171         };
2172         struct perf_env *env = evsel__env(evsel);
2173         const char *arch_name = perf_env__arch(env);
2174         struct arch *arch;
2175         int err;
2176 
2177         if (!arch_name)
2178                 return errno;
2179 
2180         args.arch = arch = arch__find(arch_name);
2181         if (arch == NULL)
2182                 return ENOTSUP;
2183 
2184         if (parch)
2185                 *parch = arch;
2186 
2187         if (arch->init) {
2188                 err = arch->init(arch, env ? env->cpuid : NULL);
2189                 if (err) {
2190                         pr_err("%s: failed to initialize %s arch priv area\n", __func__, arch->name);
2191                         return err;
2192                 }
2193         }
2194 
2195         args.ms = *ms;
2196         notes->start = map__rip_2objdump(ms->map, sym->start);
2197 
2198         return symbol__disassemble(sym, &args);
2199 }
2200 
2201 static void insert_source_line(struct rb_root *root, struct annotation_line *al,
2202                                struct annotation_options *opts)
2203 {
2204         struct annotation_line *iter;
2205         struct rb_node **p = &root->rb_node;
2206         struct rb_node *parent = NULL;
2207         int i, ret;
2208 
2209         while (*p != NULL) {
2210                 parent = *p;
2211                 iter = rb_entry(parent, struct annotation_line, rb_node);
2212 
2213                 ret = strcmp(iter->path, al->path);
2214                 if (ret == 0) {
2215                         for (i = 0; i < al->data_nr; i++) {
2216                                 iter->data[i].percent_sum += annotation_data__percent(&al->data[i],
2217                                                                                       opts->percent_type);
2218                         }
2219                         return;
2220                 }
2221 
2222                 if (ret < 0)
2223                         p = &(*p)->rb_left;
2224                 else
2225                         p = &(*p)->rb_right;
2226         }
2227 
2228         for (i = 0; i < al->data_nr; i++) {
2229                 al->data[i].percent_sum = annotation_data__percent(&al->data[i],
2230                                                                    opts->percent_type);
2231         }
2232 
2233         rb_link_node(&al->rb_node, parent, p);
2234         rb_insert_color(&al->rb_node, root);
2235 }
2236 
2237 static int cmp_source_line(struct annotation_line *a, struct annotation_line *b)
2238 {
2239         int i;
2240 
2241         for (i = 0; i < a->data_nr; i++) {
2242                 if (a->data[i].percent_sum == b->data[i].percent_sum)
2243                         continue;
2244                 return a->data[i].percent_sum > b->data[i].percent_sum;
2245         }
2246 
2247         return 0;
2248 }
2249 
2250 static void __resort_source_line(struct rb_root *root, struct annotation_line *al)
2251 {
2252         struct annotation_line *iter;
2253         struct rb_node **p = &root->rb_node;
2254         struct rb_node *parent = NULL;
2255 
2256         while (*p != NULL) {
2257                 parent = *p;
2258                 iter = rb_entry(parent, struct annotation_line, rb_node);
2259 
2260                 if (cmp_source_line(al, iter))
2261                         p = &(*p)->rb_left;
2262                 else
2263                         p = &(*p)->rb_right;
2264         }
2265 
2266         rb_link_node(&al->rb_node, parent, p);
2267         rb_insert_color(&al->rb_node, root);
2268 }
2269 
2270 static void resort_source_line(struct rb_root *dest_root, struct rb_root *src_root)
2271 {
2272         struct annotation_line *al;
2273         struct rb_node *node;
2274 
2275         node = rb_first(src_root);
2276         while (node) {
2277                 struct rb_node *next;
2278 
2279                 al = rb_entry(node, struct annotation_line, rb_node);
2280                 next = rb_next(node);
2281                 rb_erase(node, src_root);
2282 
2283                 __resort_source_line(dest_root, al);
2284                 node = next;
2285         }
2286 }
2287 
2288 static void print_summary(struct rb_root *root, const char *filename)
2289 {
2290         struct annotation_line *al;
2291         struct rb_node *node;
2292 
2293         printf("\nSorted summary for file %s\n", filename);
2294         printf("----------------------------------------------\n\n");
2295 
2296         if (RB_EMPTY_ROOT(root)) {
2297                 printf(" Nothing higher than %1.1f%%\n", MIN_GREEN);
2298                 return;
2299         }
2300 
2301         node = rb_first(root);
2302         while (node) {
2303                 double percent, percent_max = 0.0;
2304                 const char *color;
2305                 char *path;
2306                 int i;
2307 
2308                 al = rb_entry(node, struct annotation_line, rb_node);
2309                 for (i = 0; i < al->data_nr; i++) {
2310                         percent = al->data[i].percent_sum;
2311                         color = get_percent_color(percent);
2312                         color_fprintf(stdout, color, " %7.2f", percent);
2313 
2314                         if (percent > percent_max)
2315                                 percent_max = percent;
2316                 }
2317 
2318                 path = al->path;
2319                 color = get_percent_color(percent_max);
2320                 color_fprintf(stdout, color, " %s\n", path);
2321 
2322                 node = rb_next(node);
2323         }
2324 }
2325 
2326 static void symbol__annotate_hits(struct symbol *sym, struct evsel *evsel)
2327 {
2328         struct annotation *notes = symbol__annotation(sym);
2329         struct sym_hist *h = annotation__histogram(notes, evsel->idx);
2330         u64 len = symbol__size(sym), offset;
2331 
2332         for (offset = 0; offset < len; ++offset)
2333                 if (h->addr[offset].nr_samples != 0)
2334                         printf("%*" PRIx64 ": %" PRIu64 "\n", BITS_PER_LONG / 2,
2335                                sym->start + offset, h->addr[offset].nr_samples);
2336         printf("%*s: %" PRIu64 "\n", BITS_PER_LONG / 2, "h->nr_samples", h->nr_samples);
2337 }
2338 
2339 static int annotated_source__addr_fmt_width(struct list_head *lines, u64 start)
2340 {
2341         char bf[32];
2342         struct annotation_line *line;
2343 
2344         list_for_each_entry_reverse(line, lines, node) {
2345                 if (line->offset != -1)
2346                         return scnprintf(bf, sizeof(bf), "%" PRIx64, start + line->offset);
2347         }
2348 
2349         return 0;
2350 }
2351 
2352 int symbol__annotate_printf(struct map_symbol *ms, struct evsel *evsel,
2353                             struct annotation_options *opts)
2354 {
2355         struct map *map = ms->map;
2356         struct symbol *sym = ms->sym;
2357         struct dso *dso = map->dso;
2358         char *filename;
2359         const char *d_filename;
2360         const char *evsel_name = evsel__name(evsel);
2361         struct annotation *notes = symbol__annotation(sym);
2362         struct sym_hist *h = annotation__histogram(notes, evsel->idx);
2363         struct annotation_line *pos, *queue = NULL;
2364         u64 start = map__rip_2objdump(map, sym->start);
2365         int printed = 2, queue_len = 0, addr_fmt_width;
2366         int more = 0;
2367         bool context = opts->context;
2368         u64 len;
2369         int width = symbol_conf.show_total_period ? 12 : 8;
2370         int graph_dotted_len;
2371         char buf[512];
2372 
2373         filename = strdup(dso->long_name);
2374         if (!filename)
2375                 return -ENOMEM;
2376 
2377         if (opts->full_path)
2378                 d_filename = filename;
2379         else
2380                 d_filename = basename(filename);
2381 
2382         len = symbol__size(sym);
2383 
2384         if (evsel__is_group_event(evsel)) {
2385                 width *= evsel->core.nr_members;
2386                 evsel__group_desc(evsel, buf, sizeof(buf));
2387                 evsel_name = buf;
2388         }
2389 
2390         graph_dotted_len = printf(" %-*.*s|     Source code & Disassembly of %s for %s (%" PRIu64 " samples, "
2391                                   "percent: %s)\n",
2392                                   width, width, symbol_conf.show_total_period ? "Period" :
2393                                   symbol_conf.show_nr_samples ? "Samples" : "Percent",
2394                                   d_filename, evsel_name, h->nr_samples,
2395                                   percent_type_str(opts->percent_type));
2396 
2397         printf("%-*.*s----\n",
2398                graph_dotted_len, graph_dotted_len, graph_dotted_line);
2399 
2400         if (verbose > 0)
2401                 symbol__annotate_hits(sym, evsel);
2402 
2403         addr_fmt_width = annotated_source__addr_fmt_width(&notes->src->source, start);
2404 
2405         list_for_each_entry(pos, &notes->src->source, node) {
2406                 int err;
2407 
2408                 if (context && queue == NULL) {
2409                         queue = pos;
2410                         queue_len = 0;
2411                 }
2412 
2413                 err = annotation_line__print(pos, sym, start, evsel, len,
2414                                              opts->min_pcnt, printed, opts->max_lines,
2415                                              queue, addr_fmt_width, opts->percent_type);
2416 
2417                 switch (err) {
2418                 case 0:
2419                         ++printed;
2420                         if (context) {
2421                                 printed += queue_len;
2422                                 queue = NULL;
2423                                 queue_len = 0;
2424                         }
2425                         break;
2426                 case 1:
2427                         /* filtered by max_lines */
2428                         ++more;
2429                         break;
2430                 case -1:
2431                 default:
2432                         /*
2433                          * Filtered by min_pcnt or non IP lines when
2434                          * context != 0
2435                          */
2436                         if (!context)
2437                                 break;
2438                         if (queue_len == context)
2439                                 queue = list_entry(queue->node.next, typeof(*queue), node);
2440                         else
2441                                 ++queue_len;
2442                         break;
2443                 }
2444         }
2445 
2446         free(filename);
2447 
2448         return more;
2449 }
2450 
2451 static void FILE__set_percent_color(void *fp __maybe_unused,
2452                                     double percent __maybe_unused,
2453                                     bool current __maybe_unused)
2454 {
2455 }
2456 
2457 static int FILE__set_jumps_percent_color(void *fp __maybe_unused,
2458                                          int nr __maybe_unused, bool current __maybe_unused)
2459 {
2460         return 0;
2461 }
2462 
2463 static int FILE__set_color(void *fp __maybe_unused, int color __maybe_unused)
2464 {
2465         return 0;
2466 }
2467 
2468 static void FILE__printf(void *fp, const char *fmt, ...)
2469 {
2470         va_list args;
2471 
2472         va_start(args, fmt);
2473         vfprintf(fp, fmt, args);
2474         va_end(args);
2475 }
2476 
2477 static void FILE__write_graph(void *fp, int graph)
2478 {
2479         const char *s;
2480         switch (graph) {
2481 
2482         case DARROW_CHAR: s = "↓"; break;
2483         case UARROW_CHAR: s = "↑"; break;
2484         case LARROW_CHAR: s = "←"; break;
2485         case RARROW_CHAR: s = "→"; break;
2486         default:                s = "?"; break;
2487         }
2488 
2489         fputs(s, fp);
2490 }
2491 
2492 static int symbol__annotate_fprintf2(struct symbol *sym, FILE *fp,
2493                                      struct annotation_options *opts)
2494 {
2495         struct annotation *notes = symbol__annotation(sym);
2496         struct annotation_write_ops wops = {
2497                 .first_line              = true,
2498                 .obj                     = fp,
2499                 .set_color               = FILE__set_color,
2500                 .set_percent_color       = FILE__set_percent_color,
2501                 .set_jumps_percent_color = FILE__set_jumps_percent_color,
2502                 .printf                  = FILE__printf,
2503                 .write_graph             = FILE__write_graph,
2504         };
2505         struct annotation_line *al;
2506 
2507         list_for_each_entry(al, &notes->src->source, node) {
2508                 if (annotation_line__filter(al, notes))
2509                         continue;
2510                 annotation_line__write(al, notes, &wops, opts);
2511                 fputc('\n', fp);
2512                 wops.first_line = false;
2513         }
2514 
2515         return 0;
2516 }
2517 
2518 int map_symbol__annotation_dump(struct map_symbol *ms, struct evsel *evsel,
2519                                 struct annotation_options *opts)
2520 {
2521         const char *ev_name = evsel__name(evsel);
2522         char buf[1024];
2523         char *filename;
2524         int err = -1;
2525         FILE *fp;
2526 
2527         if (asprintf(&filename, "%s.annotation", ms->sym->name) < 0)
2528                 return -1;
2529 
2530         fp = fopen(filename, "w");
2531         if (fp == NULL)
2532                 goto out_free_filename;
2533 
2534         if (evsel__is_group_event(evsel)) {
2535                 evsel__group_desc(evsel, buf, sizeof(buf));
2536                 ev_name = buf;
2537         }
2538 
2539         fprintf(fp, "%s() %s\nEvent: %s\n\n",
2540                 ms->sym->name, ms->map->dso->long_name, ev_name);
2541         symbol__annotate_fprintf2(ms->sym, fp, opts);
2542 
2543         fclose(fp);
2544         err = 0;
2545 out_free_filename:
2546         free(filename);
2547         return err;
2548 }
2549 
2550 void symbol__annotate_zero_histogram(struct symbol *sym, int evidx)
2551 {
2552         struct annotation *notes = symbol__annotation(sym);
2553         struct sym_hist *h = annotation__histogram(notes, evidx);
2554 
2555         memset(h, 0, notes->src->sizeof_sym_hist);
2556 }
2557 
2558 void symbol__annotate_decay_histogram(struct symbol *sym, int evidx)
2559 {
2560         struct annotation *notes = symbol__annotation(sym);
2561         struct sym_hist *h = annotation__histogram(notes, evidx);
2562         int len = symbol__size(sym), offset;
2563 
2564         h->nr_samples = 0;
2565         for (offset = 0; offset < len; ++offset) {
2566                 h->addr[offset].nr_samples = h->addr[offset].nr_samples * 7 / 8;
2567                 h->nr_samples += h->addr[offset].nr_samples;
2568         }
2569 }
2570 
2571 void annotated_source__purge(struct annotated_source *as)
2572 {
2573         struct annotation_line *al, *n;
2574 
2575         list_for_each_entry_safe(al, n, &as->source, node) {
2576                 list_del_init(&al->node);
2577                 disasm_line__free(disasm_line(al));
2578         }
2579 }
2580 
2581 static size_t disasm_line__fprintf(struct disasm_line *dl, FILE *fp)
2582 {
2583         size_t printed;
2584 
2585         if (dl->al.offset == -1)
2586                 return fprintf(fp, "%s\n", dl->al.line);
2587 
2588         printed = fprintf(fp, "%#" PRIx64 " %s", dl->al.offset, dl->ins.name);
2589 
2590         if (dl->ops.raw[0] != '\0') {
2591                 printed += fprintf(fp, "%.*s %s\n", 6 - (int)printed, " ",
2592                                    dl->ops.raw);
2593         }
2594 
2595         return printed + fprintf(fp, "\n");
2596 }
2597 
2598 size_t disasm__fprintf(struct list_head *head, FILE *fp)
2599 {
2600         struct disasm_line *pos;
2601         size_t printed = 0;
2602 
2603         list_for_each_entry(pos, head, al.node)
2604                 printed += disasm_line__fprintf(pos, fp);
2605 
2606         return printed;
2607 }
2608 
2609 bool disasm_line__is_valid_local_jump(struct disasm_line *dl, struct symbol *sym)
2610 {
2611         if (!dl || !dl->ins.ops || !ins__is_jump(&dl->ins) ||
2612             !disasm_line__has_local_offset(dl) || dl->ops.target.offset < 0 ||
2613             dl->ops.target.offset >= (s64)symbol__size(sym))
2614                 return false;
2615 
2616         return true;
2617 }
2618 
2619 void annotation__mark_jump_targets(struct annotation *notes, struct symbol *sym)
2620 {
2621         u64 offset, size = symbol__size(sym);
2622 
2623         /* PLT symbols contain external offsets */
2624         if (strstr(sym->name, "@plt"))
2625                 return;
2626 
2627         for (offset = 0; offset < size; ++offset) {
2628                 struct annotation_line *al = notes->offsets[offset];
2629                 struct disasm_line *dl;
2630 
2631                 dl = disasm_line(al);
2632 
2633                 if (!disasm_line__is_valid_local_jump(dl, sym))
2634                         continue;
2635 
2636                 al = notes->offsets[dl->ops.target.offset];
2637 
2638                 /*
2639                  * FIXME: Oops, no jump target? Buggy disassembler? Or do we
2640                  * have to adjust to the previous offset?
2641                  */
2642                 if (al == NULL)
2643                         continue;
2644 
2645                 if (++al->jump_sources > notes->max_jump_sources)
2646                         notes->max_jump_sources = al->jump_sources;
2647         }
2648 }
2649 
2650 void annotation__set_offsets(struct annotation *notes, s64 size)
2651 {
2652         struct annotation_line *al;
2653 
2654         notes->max_line_len = 0;
2655         notes->nr_entries = 0;
2656         notes->nr_asm_entries = 0;
2657 
2658         list_for_each_entry(al, &notes->src->source, node) {
2659                 size_t line_len = strlen(al->line);
2660 
2661                 if (notes->max_line_len < line_len)
2662                         notes->max_line_len = line_len;
2663                 al->idx = notes->nr_entries++;
2664                 if (al->offset != -1) {
2665                         al->idx_asm = notes->nr_asm_entries++;
2666                         /*
2667                          * FIXME: short term bandaid to cope with assembly
2668                          * routines that comes with labels in the same column
2669                          * as the address in objdump, sigh.
2670                          *
2671                          * E.g. copy_user_generic_unrolled
2672                          */
2673                         if (al->offset < size)
2674                                 notes->offsets[al->offset] = al;
2675                 } else
2676                         al->idx_asm = -1;
2677         }
2678 }
2679 
2680 static inline int width_jumps(int n)
2681 {
2682         if (n >= 100)
2683                 return 5;
2684         if (n / 10)
2685                 return 2;
2686         return 1;
2687 }
2688 
2689 static int annotation__max_ins_name(struct annotation *notes)
2690 {
2691         int max_name = 0, len;
2692         struct annotation_line *al;
2693 
2694         list_for_each_entry(al, &notes->src->source, node) {
2695                 if (al->offset == -1)
2696                         continue;
2697 
2698                 len = strlen(disasm_line(al)->ins.name);
2699                 if (max_name < len)
2700                         max_name = len;
2701         }
2702 
2703         return max_name;
2704 }
2705 
2706 void annotation__init_column_widths(struct annotation *notes, struct symbol *sym)
2707 {
2708         notes->widths.addr = notes->widths.target =
2709                 notes->widths.min_addr = hex_width(symbol__size(sym));
2710         notes->widths.max_addr = hex_width(sym->end);
2711         notes->widths.jumps = width_jumps(notes->max_jump_sources);
2712         notes->widths.max_ins_name = annotation__max_ins_name(notes);
2713 }
2714 
2715 void annotation__update_column_widths(struct annotation *notes)
2716 {
2717         if (notes->options->use_offset)
2718                 notes->widths.target = notes->widths.min_addr;
2719         else
2720                 notes->widths.target = notes->widths.max_addr;
2721 
2722         notes->widths.addr = notes->widths.target;
2723 
2724         if (notes->options->show_nr_jumps)
2725                 notes->widths.addr += notes->widths.jumps + 1;
2726 }
2727 
2728 static void annotation__calc_lines(struct annotation *notes, struct map *map,
2729                                    struct rb_root *root,
2730                                    struct annotation_options *opts)
2731 {
2732         struct annotation_line *al;
2733         struct rb_root tmp_root = RB_ROOT;
2734 
2735         list_for_each_entry(al, &notes->src->source, node) {
2736                 double percent_max = 0.0;
2737                 int i;
2738 
2739                 for (i = 0; i < al->data_nr; i++) {
2740                         double percent;
2741 
2742                         percent = annotation_data__percent(&al->data[i],
2743                                                            opts->percent_type);
2744 
2745                         if (percent > percent_max)
2746                                 percent_max = percent;
2747                 }
2748 
2749                 if (percent_max <= 0.5)
2750                         continue;
2751 
2752                 al->path = get_srcline(map->dso, notes->start + al->offset, NULL,
2753                                        false, true, notes->start + al->offset);
2754                 insert_source_line(&tmp_root, al, opts);
2755         }
2756 
2757         resort_source_line(root, &tmp_root);
2758 }
2759 
2760 static void symbol__calc_lines(struct map_symbol *ms, struct rb_root *root,
2761                                struct annotation_options *opts)
2762 {
2763         struct annotation *notes = symbol__annotation(ms->sym);
2764 
2765         annotation__calc_lines(notes, ms->map, root, opts);
2766 }
2767 
2768 int symbol__tty_annotate2(struct map_symbol *ms, struct evsel *evsel,
2769                           struct annotation_options *opts)
2770 {
2771         struct dso *dso = ms->map->dso;
2772         struct symbol *sym = ms->sym;
2773         struct rb_root source_line = RB_ROOT;
2774         struct hists *hists = evsel__hists(evsel);
2775         char buf[1024];
2776 
2777         if (symbol__annotate2(ms, evsel, opts, NULL) < 0)
2778                 return -1;
2779 
2780         if (opts->print_lines) {
2781                 srcline_full_filename = opts->full_path;
2782                 symbol__calc_lines(ms, &source_line, opts);
2783                 print_summary(&source_line, dso->long_name);
2784         }
2785 
2786         hists__scnprintf_title(hists, buf, sizeof(buf));
2787         fprintf(stdout, "%s, [percent: %s]\n%s() %s\n",
2788                 buf, percent_type_str(opts->percent_type), sym->name, dso->long_name);
2789         symbol__annotate_fprintf2(sym, stdout, opts);
2790 
2791         annotated_source__purge(symbol__annotation(sym)->src);
2792 
2793         return 0;
2794 }
2795 
2796 int symbol__tty_annotate(struct map_symbol *ms, struct evsel *evsel,
2797                          struct annotation_options *opts)
2798 {
2799         struct dso *dso = ms->map->dso;
2800         struct symbol *sym = ms->sym;
2801         struct rb_root source_line = RB_ROOT;
2802 
2803         if (symbol__annotate(ms, evsel, opts, NULL) < 0)
2804                 return -1;
2805 
2806         symbol__calc_percent(sym, evsel);
2807 
2808         if (opts->print_lines) {
2809                 srcline_full_filename = opts->full_path;
2810                 symbol__calc_lines(ms, &source_line, opts);
2811                 print_summary(&source_line, dso->long_name);
2812         }
2813 
2814         symbol__annotate_printf(ms, evsel, opts);
2815 
2816         annotated_source__purge(symbol__annotation(sym)->src);
2817 
2818         return 0;
2819 }
2820 
2821 bool ui__has_annotation(void)
2822 {
2823         return use_browser == 1 && perf_hpp_list.sym;
2824 }
2825 
2826 
2827 static double annotation_line__max_percent(struct annotation_line *al,
2828                                            struct annotation *notes,
2829                                            unsigned int percent_type)
2830 {
2831         double percent_max = 0.0;
2832         int i;
2833 
2834         for (i = 0; i < notes->nr_events; i++) {
2835                 double percent;
2836 
2837                 percent = annotation_data__percent(&al->data[i],
2838                                                    percent_type);
2839 
2840                 if (percent > percent_max)
2841                         percent_max = percent;
2842         }
2843 
2844         return percent_max;
2845 }
2846 
2847 static void disasm_line__write(struct disasm_line *dl, struct annotation *notes,
2848                                void *obj, char *bf, size_t size,
2849                                void (*obj__printf)(void *obj, const char *fmt, ...),
2850                                void (*obj__write_graph)(void *obj, int graph))
2851 {
2852         if (dl->ins.ops && dl->ins.ops->scnprintf) {
2853                 if (ins__is_jump(&dl->ins)) {
2854                         bool fwd;
2855 
2856                         if (dl->ops.target.outside)
2857                                 goto call_like;
2858                         fwd = dl->ops.target.offset > dl->al.offset;
2859                         obj__write_graph(obj, fwd ? DARROW_CHAR : UARROW_CHAR);
2860                         obj__printf(obj, " ");
2861                 } else if (ins__is_call(&dl->ins)) {
2862 call_like:
2863                         obj__write_graph(obj, RARROW_CHAR);
2864                         obj__printf(obj, " ");
2865                 } else if (ins__is_ret(&dl->ins)) {
2866                         obj__write_graph(obj, LARROW_CHAR);
2867                         obj__printf(obj, " ");
2868                 } else {
2869                         obj__printf(obj, "  ");
2870                 }
2871         } else {
2872                 obj__printf(obj, "  ");
2873         }
2874 
2875         disasm_line__scnprintf(dl, bf, size, !notes->options->use_offset, notes->widths.max_ins_name);
2876 }
2877 
2878 static void ipc_coverage_string(char *bf, int size, struct annotation *notes)
2879 {
2880         double ipc = 0.0, coverage = 0.0;
2881 
2882         if (notes->hit_cycles)
2883                 ipc = notes->hit_insn / ((double)notes->hit_cycles);
2884 
2885         if (notes->total_insn) {
2886                 coverage = notes->cover_insn * 100.0 /
2887                         ((double)notes->total_insn);
2888         }
2889 
2890         scnprintf(bf, size, "(Average IPC: %.2f, IPC Coverage: %.1f%%)",
2891                   ipc, coverage);
2892 }
2893 
2894 static void __annotation_line__write(struct annotation_line *al, struct annotation *notes,
2895                                      bool first_line, bool current_entry, bool change_color, int width,
2896                                      void *obj, unsigned int percent_type,
2897                                      int  (*obj__set_color)(void *obj, int color),
2898                                      void (*obj__set_percent_color)(void *obj, double percent, bool current),
2899                                      int  (*obj__set_jumps_percent_color)(void *obj, int nr, bool current),
2900                                      void (*obj__printf)(void *obj, const char *fmt, ...),
2901                                      void (*obj__write_graph)(void *obj, int graph))
2902 
2903 {
2904         double percent_max = annotation_line__max_percent(al, notes, percent_type);
2905         int pcnt_width = annotation__pcnt_width(notes),
2906             cycles_width = annotation__cycles_width(notes);
2907         bool show_title = false;
2908         char bf[256];
2909         int printed;
2910 
2911         if (first_line && (al->offset == -1 || percent_max == 0.0)) {
2912                 if (notes->have_cycles) {
2913                         if (al->ipc == 0.0 && al->cycles == 0)
2914                                 show_title = true;
2915                 } else
2916                         show_title = true;
2917         }
2918 
2919         if (al->offset != -1 && percent_max != 0.0) {
2920                 int i;
2921 
2922                 for (i = 0; i < notes->nr_events; i++) {
2923                         double percent;
2924 
2925                         percent = annotation_data__percent(&al->data[i], percent_type);
2926 
2927                         obj__set_percent_color(obj, percent, current_entry);
2928                         if (symbol_conf.show_total_period) {
2929                                 obj__printf(obj, "%11" PRIu64 " ", al->data[i].he.period);
2930                         } else if (symbol_conf.show_nr_samples) {
2931                                 obj__printf(obj, "%6" PRIu64 " ",
2932                                                    al->data[i].he.nr_samples);
2933                         } else {
2934                                 obj__printf(obj, "%6.2f ", percent);
2935                         }
2936                 }
2937         } else {
2938                 obj__set_percent_color(obj, 0, current_entry);
2939 
2940                 if (!show_title)
2941                         obj__printf(obj, "%-*s", pcnt_width, " ");
2942                 else {
2943                         obj__printf(obj, "%-*s", pcnt_width,
2944                                            symbol_conf.show_total_period ? "Period" :
2945                                            symbol_conf.show_nr_samples ? "Samples" : "Percent");
2946                 }
2947         }
2948 
2949         if (notes->have_cycles) {
2950                 if (al->ipc)
2951                         obj__printf(obj, "%*.2f ", ANNOTATION__IPC_WIDTH - 1, al->ipc);
2952                 else if (!show_title)
2953                         obj__printf(obj, "%*s", ANNOTATION__IPC_WIDTH, " ");
2954                 else
2955                         obj__printf(obj, "%*s ", ANNOTATION__IPC_WIDTH - 1, "IPC");
2956 
2957                 if (!notes->options->show_minmax_cycle) {
2958                         if (al->cycles)
2959                                 obj__printf(obj, "%*" PRIu64 " ",
2960                                            ANNOTATION__CYCLES_WIDTH - 1, al->cycles);
2961                         else if (!show_title)
2962                                 obj__printf(obj, "%*s",
2963                                             ANNOTATION__CYCLES_WIDTH, " ");
2964                         else
2965                                 obj__printf(obj, "%*s ",
2966                                             ANNOTATION__CYCLES_WIDTH - 1,
2967                                             "Cycle");
2968                 } else {
2969                         if (al->cycles) {
2970                                 char str[32];
2971 
2972                                 scnprintf(str, sizeof(str),
2973                                         "%" PRIu64 "(%" PRIu64 "/%" PRIu64 ")",
2974                                         al->cycles, al->cycles_min,
2975                                         al->cycles_max);
2976 
2977                                 obj__printf(obj, "%*s ",
2978                                             ANNOTATION__MINMAX_CYCLES_WIDTH - 1,
2979                                             str);
2980                         } else if (!show_title)
2981                                 obj__printf(obj, "%*s",
2982                                             ANNOTATION__MINMAX_CYCLES_WIDTH,
2983                                             " ");
2984                         else
2985                                 obj__printf(obj, "%*s ",
2986                                             ANNOTATION__MINMAX_CYCLES_WIDTH - 1,
2987                                             "Cycle(min/max)");
2988                 }
2989 
2990                 if (show_title && !*al->line) {
2991                         ipc_coverage_string(bf, sizeof(bf), notes);
2992                         obj__printf(obj, "%*s", ANNOTATION__AVG_IPC_WIDTH, bf);
2993                 }
2994         }
2995 
2996         obj__printf(obj, " ");
2997 
2998         if (!*al->line)
2999                 obj__printf(obj, "%-*s", width - pcnt_width - cycles_width, " ");
3000         else if (al->offset == -1) {
3001                 if (al->line_nr && notes->options->show_linenr)
3002                         printed = scnprintf(bf, sizeof(bf), "%-*d ", notes->widths.addr + 1, al->line_nr);
3003                 else
3004                         printed = scnprintf(bf, sizeof(bf), "%-*s  ", notes->widths.addr, " ");
3005                 obj__printf(obj, bf);
3006                 obj__printf(obj, "%-*s", width - printed - pcnt_width - cycles_width + 1, al->line);
3007         } else {
3008                 u64 addr = al->offset;
3009                 int color = -1;
3010 
3011                 if (!notes->options->use_offset)
3012                         addr += notes->start;
3013 
3014                 if (!notes->options->use_offset) {
3015                         printed = scnprintf(bf, sizeof(bf), "%" PRIx64 ": ", addr);
3016                 } else {
3017                         if (al->jump_sources &&
3018                             notes->options->offset_level >= ANNOTATION__OFFSET_JUMP_TARGETS) {
3019                                 if (notes->options->show_nr_jumps) {
3020                                         int prev;
3021                                         printed = scnprintf(bf, sizeof(bf), "%*d ",
3022                                                             notes->widths.jumps,
3023                                                             al->jump_sources);
3024                                         prev = obj__set_jumps_percent_color(obj, al->jump_sources,
3025                                                                             current_entry);
3026                                         obj__printf(obj, bf);
3027                                         obj__set_color(obj, prev);
3028                                 }
3029 print_addr:
3030                                 printed = scnprintf(bf, sizeof(bf), "%*" PRIx64 ": ",
3031                                                     notes->widths.target, addr);
3032                         } else if (ins__is_call(&disasm_line(al)->ins) &&
3033                                    notes->options->offset_level >= ANNOTATION__OFFSET_CALL) {
3034                                 goto print_addr;
3035                         } else if (notes->options->offset_level == ANNOTATION__MAX_OFFSET_LEVEL) {
3036                                 goto print_addr;
3037                         } else {
3038                                 printed = scnprintf(bf, sizeof(bf), "%-*s  ",
3039                                                     notes->widths.addr, " ");
3040                         }
3041                 }
3042 
3043                 if (change_color)
3044                         color = obj__set_color(obj, HE_COLORSET_ADDR);
3045                 obj__printf(obj, bf);
3046                 if (change_color)
3047                         obj__set_color(obj, color);
3048 
3049                 disasm_line__write(disasm_line(al), notes, obj, bf, sizeof(bf), obj__printf, obj__write_graph);
3050 
3051                 obj__printf(obj, "%-*s", width - pcnt_width - cycles_width - 3 - printed, bf);
3052         }
3053 
3054 }
3055 
3056 void annotation_line__write(struct annotation_line *al, struct annotation *notes,
3057                             struct annotation_write_ops *wops,
3058                             struct annotation_options *opts)
3059 {
3060         __annotation_line__write(al, notes, wops->first_line, wops->current_entry,
3061                                  wops->change_color, wops->width, wops->obj,
3062                                  opts->percent_type,
3063                                  wops->set_color, wops->set_percent_color,
3064                                  wops->set_jumps_percent_color, wops->printf,
3065                                  wops->write_graph);
3066 }
3067 
3068 int symbol__annotate2(struct map_symbol *ms, struct evsel *evsel,
3069                       struct annotation_options *options, struct arch **parch)
3070 {
3071         struct symbol *sym = ms->sym;
3072         struct annotation *notes = symbol__annotation(sym);
3073         size_t size = symbol__size(sym);
3074         int nr_pcnt = 1, err;
3075 
3076         notes->offsets = zalloc(size * sizeof(struct annotation_line *));
3077         if (notes->offsets == NULL)
3078                 return ENOMEM;
3079 
3080         if (evsel__is_group_event(evsel))
3081                 nr_pcnt = evsel->core.nr_members;
3082 
3083         err = symbol__annotate(ms, evsel, options, parch);
3084         if (err)
3085                 goto out_free_offsets;
3086 
3087         notes->options = options;
3088 
3089         symbol__calc_percent(sym, evsel);
3090 
3091         annotation__set_offsets(notes, size);
3092         annotation__mark_jump_targets(notes, sym);
3093         annotation__compute_ipc(notes, size);
3094         annotation__init_column_widths(notes, sym);
3095         notes->nr_events = nr_pcnt;
3096 
3097         annotation__update_column_widths(notes);
3098         sym->annotate2 = true;
3099 
3100         return 0;
3101 
3102 out_free_offsets:
3103         zfree(&notes->offsets);
3104         return err;
3105 }
3106 
3107 static int annotation__config(const char *var, const char *value, void *data)
3108 {
3109         struct annotation_options *opt = data;
3110 
3111         if (!strstarts(var, "annotate."))
3112                 return 0;
3113 
3114         if (!strcmp(var, "annotate.offset_level")) {
3115                 perf_config_u8(&opt->offset_level, "offset_level", value);
3116 
3117                 if (opt->offset_level > ANNOTATION__MAX_OFFSET_LEVEL)
3118                         opt->offset_level = ANNOTATION__MAX_OFFSET_LEVEL;
3119                 else if (opt->offset_level < ANNOTATION__MIN_OFFSET_LEVEL)
3120                         opt->offset_level = ANNOTATION__MIN_OFFSET_LEVEL;
3121         } else if (!strcmp(var, "annotate.hide_src_code")) {
3122                 opt->hide_src_code = perf_config_bool("hide_src_code", value);
3123         } else if (!strcmp(var, "annotate.jump_arrows")) {
3124                 opt->jump_arrows = perf_config_bool("jump_arrows", value);
3125         } else if (!strcmp(var, "annotate.show_linenr")) {
3126                 opt->show_linenr = perf_config_bool("show_linenr", value);
3127         } else if (!strcmp(var, "annotate.show_nr_jumps")) {
3128                 opt->show_nr_jumps = perf_config_bool("show_nr_jumps", value);
3129         } else if (!strcmp(var, "annotate.show_nr_samples")) {
3130                 symbol_conf.show_nr_samples = perf_config_bool("show_nr_samples",
3131                                                                 value);
3132         } else if (!strcmp(var, "annotate.show_total_period")) {
3133                 symbol_conf.show_total_period = perf_config_bool("show_total_period",
3134                                                                 value);
3135         } else if (!strcmp(var, "annotate.use_offset")) {
3136                 opt->use_offset = perf_config_bool("use_offset", value);
3137         } else if (!strcmp(var, "annotate.disassembler_style")) {
3138                 opt->disassembler_style = value;
3139         } else {
3140                 pr_debug("%s variable unknown, ignoring...", var);
3141         }
3142 
3143         return 0;
3144 }
3145 
3146 void annotation_config__init(struct annotation_options *opt)
3147 {
3148         perf_config(annotation__config, opt);
3149 }
3150 
3151 static unsigned int parse_percent_type(char *str1, char *str2)
3152 {
3153         unsigned int type = (unsigned int) -1;
3154 
3155         if (!strcmp("period", str1)) {
3156                 if (!strcmp("local", str2))
3157                         type = PERCENT_PERIOD_LOCAL;
3158                 else if (!strcmp("global", str2))
3159                         type = PERCENT_PERIOD_GLOBAL;
3160         }
3161 
3162         if (!strcmp("hits", str1)) {
3163                 if (!strcmp("local", str2))
3164                         type = PERCENT_HITS_LOCAL;
3165                 else if (!strcmp("global", str2))
3166                         type = PERCENT_HITS_GLOBAL;
3167         }
3168 
3169         return type;
3170 }
3171 
3172 int annotate_parse_percent_type(const struct option *opt, const char *_str,
3173                                 int unset __maybe_unused)
3174 {
3175         struct annotation_options *opts = opt->value;
3176         unsigned int type;
3177         char *str1, *str2;
3178         int err = -1;
3179 
3180         str1 = strdup(_str);
3181         if (!str1)
3182                 return -ENOMEM;
3183 
3184         str2 = strchr(str1, '-');
3185         if (!str2)
3186                 goto out;
3187 
3188         *str2++ = 0;
3189 
3190         type = parse_percent_type(str1, str2);
3191         if (type == (unsigned int) -1)
3192                 type = parse_percent_type(str2, str1);
3193         if (type != (unsigned int) -1) {
3194                 opts->percent_type = type;
3195                 err = 0;
3196         }
3197 
3198 out:
3199         free(str1);
3200         return err;
3201 }
3202 
3203 int annotate_check_args(struct annotation_options *args)
3204 {
3205         if (args->prefix_strip && !args->prefix) {
3206                 pr_err("--prefix-strip requires --prefix\n");
3207                 return -1;
3208         }
3209         return 0;
3210 }
3211 

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