tools/perf/util/annotate.c

   1 // SPDX-License-Identifier: GPL-2.0-only
   2 /*
   3  * Copyright (C) 2011, Red Hat Inc, Arnaldo Carvalho de Melo <[email protected]>
   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 "bpf-utils.h"
  32 #include "block-range.h"
  33 #include "string2.h"
  34 #include "util/event.h"
  35 #include "arch/common.h"
  36 #include "namespaces.h"
  37 #include <regex.h>
  38 #include <linux/bitops.h>
  39 #include <linux/kernel.h>
  40 #include <linux/string.h>
  41 #include <subcmd/parse-options.h>
  42 #include <subcmd/run-command.h>
  43
  44 /* FIXME: For the HE_COLORSET */
  45 #include "ui/browser.h"
  46
  47 /*
  48  * FIXME: Using the same values as slang.h,
  49  * but that header may not be available everywhere
  50  */
  51 #define LARROW_CHAR     ((unsigned char)',')
  52 #define RARROW_CHAR     ((unsigned char)'+')
  53 #define DARROW_CHAR     ((unsigned char)'.')
  54 #define UARROW_CHAR     ((unsigned char)'-')
  55
  56 #include <linux/ctype.h>
  57
  58 struct annotation_options annotation__default_options = {
  59         .use_offset     = true,
  60         .jump_arrows    = true,
  61         .annotate_src   = true,
  62         .offset_level   = ANNOTATION__OFFSET_JUMP_TARGETS,
  63         .percent_type   = PERCENT_PERIOD_LOCAL,
  64 };
  65
  66 static regex_t   file_lineno;
  67
  68 static struct ins_ops *ins__find(struct arch *arch, const char *name);
  69 static void ins__sort(struct arch *arch);
  70 static int disasm_line__parse(char *line, const char **namep, char **rawp);
  71
  72 struct arch {
  73         const char      *name;
  74         struct ins      *instructions;
  75         size_t          nr_instructions;
  76         size_t          nr_instructions_allocated;
  77         struct ins_ops  *(*associate_instruction_ops)(struct arch *arch, const char *name);
  78         bool            sorted_instructions;
  79         bool            initialized;
  80         void            *priv;
  81         unsigned int    model;
  82         unsigned int    family;
  83         int             (*init)(struct arch *arch, char *cpuid);
  84         bool            (*ins_is_fused)(struct arch *arch, const char *ins1,
  85                                         const char *ins2);
  86         struct          {
  87                 char comment_char;
  88                 char skip_functions_char;
  89         } objdump;
  90 };
  91
  92 static struct ins_ops call_ops;
  93 static struct ins_ops dec_ops;
  94 static struct ins_ops jump_ops;
  95 static struct ins_ops mov_ops;
  96 static struct ins_ops nop_ops;
  97 static struct ins_ops lock_ops;
  98 static struct ins_ops ret_ops;
  99
 100 static int arch__grow_instructions(struct arch *arch)
 101 {
 102         struct ins *new_instructions;
 103         size_t new_nr_allocated;
 104
 105         if (arch->nr_instructions_allocated == 0 && arch->instructions)
 106                 goto grow_from_non_allocated_table;
 107
 108         new_nr_allocated = arch->nr_instructions_allocated + 128;
 109         new_instructions = realloc(arch->instructions, new_nr_allocated * sizeof(struct ins));
 110         if (new_instructions == NULL)
 111                 return -1;
 112
 113 out_update_instructions:
 114         arch->instructions = new_instructions;
 115         arch->nr_instructions_allocated = new_nr_allocated;
 116         return 0;
 117
 118 grow_from_non_allocated_table:
 119         new_nr_allocated = arch->nr_instructions + 128;
 120         new_instructions = calloc(new_nr_allocated, sizeof(struct ins));
 121         if (new_instructions == NULL)
 122                 return -1;
 123
 124         memcpy(new_instructions, arch->instructions, arch->nr_instructions);
 125         goto out_update_instructions;
 126 }
 127
 128 static int arch__associate_ins_ops(struct arch* arch, const char *name, struct ins_ops *ops)
 129 {
 130         struct ins *ins;
 131
 132         if (arch->nr_instructions == arch->nr_instructions_allocated &&
 133             arch__grow_instructions(arch))
 134                 return -1;
 135
 136         ins = &arch->instructions[arch->nr_instructions];
 137         ins->name = strdup(name);
 138         if (!ins->name)
 139                 return -1;
 140
 141         ins->ops  = ops;
 142         arch->nr_instructions++;
 143
 144         ins__sort(arch);
 145         return 0;
 146 }
 147
 148 #include "arch/arc/annotate/instructions.c"
 149 #include "arch/arm/annotate/instructions.c"
 150 #include "arch/arm64/annotate/instructions.c"
 151 #include "arch/csky/annotate/instructions.c"
 152 #include "arch/mips/annotate/instructions.c"
 153 #include "arch/x86/annotate/instructions.c"
 154 #include "arch/powerpc/annotate/instructions.c"
 155 #include "arch/riscv64/annotate/instructions.c"
 156 #include "arch/s390/annotate/instructions.c"
 157 #include "arch/sparc/annotate/instructions.c"
 158
 159 static struct arch architectures[] = {
 160         {
 161                 .name = "arc",
 162                 .init = arc__annotate_init,
 163         },
 164         {
 165                 .name = "arm",
 166                 .init = arm__annotate_init,
 167         },
 168         {
 169                 .name = "arm64",
 170                 .init = arm64__annotate_init,
 171         },
 172         {
 173                 .name = "csky",
 174                 .init = csky__annotate_init,
 175         },
 176         {
 177                 .name = "mips",
 178                 .init = mips__annotate_init,
 179                 .objdump = {
 180                         .comment_char = '#',
 181                 },
 182         },
 183         {
 184                 .name = "x86",
 185                 .init = x86__annotate_init,
 186                 .instructions = x86__instructions,
 187                 .nr_instructions = ARRAY_SIZE(x86__instructions),
 188                 .objdump =  {
 189                         .comment_char = '#',
 190                 },
 191         },
 192         {
 193                 .name = "powerpc",
 194                 .init = powerpc__annotate_init,
 195         },
 196         {
 197                 .name = "riscv64",
 198                 .init = riscv64__annotate_init,
 199         },
 200         {
 201                 .name = "s390",
 202                 .init = s390__annotate_init,
 203                 .objdump =  {
 204                         .comment_char = '#',
 205                 },
 206         },
 207         {
 208                 .name = "sparc",
 209                 .init = sparc__annotate_init,
 210                 .objdump = {
 211                         .comment_char = '#',
 212                 },
 213         },
 214 };
 215
 216 static void ins__delete(struct ins_operands *ops)
 217 {
 218         if (ops == NULL)
 219                 return;
 220         zfree(&ops->source.raw);
 221         zfree(&ops->source.name);
 222         zfree(&ops->target.raw);
 223         zfree(&ops->target.name);
 224 }
 225
 226 static int ins__raw_scnprintf(struct ins *ins, char *bf, size_t size,
 227                               struct ins_operands *ops, int max_ins_name)
 228 {
 229         return scnprintf(bf, size, "%-*s %s", max_ins_name, ins->name, ops->raw);
 230 }
 231
 232 int ins__scnprintf(struct ins *ins, char *bf, size_t size,
 233                    struct ins_operands *ops, int max_ins_name)
 234 {
 235         if (ins->ops->scnprintf)
 236                 return ins->ops->scnprintf(ins, bf, size, ops, max_ins_name);
 237
 238         return ins__raw_scnprintf(ins, bf, size, ops, max_ins_name);
 239 }
 240
 241 bool ins__is_fused(struct arch *arch, const char *ins1, const char *ins2)
 242 {
 243         if (!arch || !arch->ins_is_fused)
 244                 return false;
 245
 246         return arch->ins_is_fused(arch, ins1, ins2);
 247 }
 248
 249 static int call__parse(struct arch *arch, struct ins_operands *ops, struct map_symbol *ms)
 250 {
 251         char *endptr, *tok, *name;
 252         struct map *map = ms->map;
 253         struct addr_map_symbol target = {
 254                 .ms = { .map = map, },
 255         };
 256
 257         ops->target.addr = strtoull(ops->raw, &endptr, 16);
 258
 259         name = strchr(endptr, '<');
 260         if (name == NULL)
 261                 goto indirect_call;
 262
 263         name++;
 264
 265         if (arch->objdump.skip_functions_char &&
 266             strchr(name, arch->objdump.skip_functions_char))
 267                 return -1;
 268
 269         tok = strchr(name, '>');
 270         if (tok == NULL)
 271                 return -1;
 272
 273         *tok = '\0';
 274         ops->target.name = strdup(name);
 275         *tok = '>';
 276
 277         if (ops->target.name == NULL)
 278                 return -1;
 279 find_target:
 280         target.addr = map__objdump_2mem(map, ops->target.addr);
 281
 282         if (maps__find_ams(ms->maps, &target) == 0 &&
 283             map__rip_2objdump(target.ms.map, map->map_ip(target.ms.map, target.addr)) == ops->target.addr)
 284                 ops->target.sym = target.ms.sym;
 285
 286         return 0;
 287
 288 indirect_call:
 289         tok = strchr(endptr, '*');
 290         if (tok != NULL) {
 291                 endptr++;
 292
 293                 /* Indirect call can use a non-rip register and offset: callq  *0x8(%rbx).
 294                  * Do not parse such instruction.  */
 295                 if (strstr(endptr, "(%r") == NULL)
 296                         ops->target.addr = strtoull(endptr, NULL, 16);
 297         }
 298         goto find_target;
 299 }
 300
 301 static int call__scnprintf(struct ins *ins, char *bf, size_t size,
 302                            struct ins_operands *ops, int max_ins_name)
 303 {
 304         if (ops->target.sym)
 305                 return scnprintf(bf, size, "%-*s %s", max_ins_name, ins->name, ops->target.sym->name);
 306
 307         if (ops->target.addr == 0)
 308                 return ins__raw_scnprintf(ins, bf, size, ops, max_ins_name);
 309
 310         if (ops->target.name)
 311                 return scnprintf(bf, size, "%-*s %s", max_ins_name, ins->name, ops->target.name);
 312
 313         return scnprintf(bf, size, "%-*s *%" PRIx64, max_ins_name, ins->name, ops->target.addr);
 314 }
 315
 316 static struct ins_ops call_ops = {
 317         .parse     = call__parse,
 318         .scnprintf = call__scnprintf,
 319 };
 320
 321 bool ins__is_call(const struct ins *ins)
 322 {
 323         return ins->ops == &call_ops || ins->ops == &s390_call_ops;
 324 }
 325
 326 /*
 327  * Prevents from matching commas in the comment section, e.g.:
 328  * ffff200008446e70:       b.cs    ffff2000084470f4 <generic_exec_single+0x314>  // b.hs, b.nlast
 329  *
 330  * and skip comma as part of function arguments, e.g.:
 331  * 1d8b4ac <linemap_lookup(line_maps const*, unsigned int)+0xcc>
 332  */
 333 static inline const char *validate_comma(const char *c, struct ins_operands *ops)
 334 {
 335         if (ops->raw_comment && c > ops->raw_comment)
 336                 return NULL;
 337
 338         if (ops->raw_func_start && c > ops->raw_func_start)
 339                 return NULL;
 340
 341         return c;
 342 }
 343
 344 static int jump__parse(struct arch *arch, struct ins_operands *ops, struct map_symbol *ms)
 345 {
 346         struct map *map = ms->map;
 347         struct symbol *sym = ms->sym;
 348         struct addr_map_symbol target = {
 349                 .ms = { .map = map, },
 350         };
 351         const char *c = strchr(ops->raw, ',');
 352         u64 start, end;
 353
 354         ops->raw_comment = strchr(ops->raw, arch->objdump.comment_char);
 355         ops->raw_func_start = strchr(ops->raw, '<');
 356
 357         c = validate_comma(c, ops);
 358
 359         /*
 360          * Examples of lines to parse for the _cpp_lex_token@@Base
 361          * function:
 362          *
 363          * 1159e6c: jne    115aa32 <_cpp_lex_token@@Base+0xf92>
 364          * 1159e8b: jne    c469be <cpp_named_operator2name@@Base+0xa72>
 365          *
 366          * The first is a jump to an offset inside the same function,
 367          * the second is to another function, i.e. that 0xa72 is an
 368          * offset in the cpp_named_operator2name@@base function.
 369          */
 370         /*
 371          * skip over possible up to 2 operands to get to address, e.g.:
 372          * tbnz  w0, #26, ffff0000083cd190 <security_file_permission+0xd0>
 373          */
 374         if (c++ != NULL) {
 375                 ops->target.addr = strtoull(c, NULL, 16);
 376                 if (!ops->target.addr) {
 377                         c = strchr(c, ',');
 378                         c = validate_comma(c, ops);
 379                         if (c++ != NULL)
 380                                 ops->target.addr = strtoull(c, NULL, 16);
 381                 }
 382         } else {
 383                 ops->target.addr = strtoull(ops->raw, NULL, 16);
 384         }
 385
 386         target.addr = map__objdump_2mem(map, ops->target.addr);
 387         start = map->unmap_ip(map, sym->start),
 388         end = map->unmap_ip(map, sym->end);
 389
 390         ops->target.outside = target.addr < start || target.addr > end;
 391
 392         /*
 393          * FIXME: things like this in _cpp_lex_token (gcc's cc1 program):
 394
 395                 cpp_named_operator2name@@Base+0xa72
 396
 397          * Point to a place that is after the cpp_named_operator2name
 398          * boundaries, i.e.  in the ELF symbol table for cc1
 399          * cpp_named_operator2name is marked as being 32-bytes long, but it in
 400          * fact is much larger than that, so we seem to need a symbols__find()
 401          * routine that looks for >= current->start and  < next_symbol->start,
 402          * possibly just for C++ objects?
 403          *
 404          * For now lets just make some progress by marking jumps to outside the
 405          * current function as call like.
 406          *
 407          * Actual navigation will come next, with further understanding of how
 408          * the symbol searching and disassembly should be done.
 409          */
 410         if (maps__find_ams(ms->maps, &target) == 0 &&
 411             map__rip_2objdump(target.ms.map, map->map_ip(target.ms.map, target.addr)) == ops->target.addr)
 412                 ops->target.sym = target.ms.sym;
 413
 414         if (!ops->target.outside) {
 415                 ops->target.offset = target.addr - start;
 416                 ops->target.offset_avail = true;
 417         } else {
 418                 ops->target.offset_avail = false;
 419         }
 420
 421         return 0;
 422 }
 423
 424 static int jump__scnprintf(struct ins *ins, char *bf, size_t size,
 425                            struct ins_operands *ops, int max_ins_name)
 426 {
 427         const char *c;
 428
 429         if (!ops->target.addr || ops->target.offset < 0)
 430                 return ins__raw_scnprintf(ins, bf, size, ops, max_ins_name);
 431
 432         if (ops->target.outside && ops->target.sym != NULL)
 433                 return scnprintf(bf, size, "%-*s %s", max_ins_name, ins->name, ops->target.sym->name);
 434
 435         c = strchr(ops->raw, ',');
 436         c = validate_comma(c, ops);
 437
 438         if (c != NULL) {
 439                 const char *c2 = strchr(c + 1, ',');
 440
 441                 c2 = validate_comma(c2, ops);
 442                 /* check for 3-op insn */
 443                 if (c2 != NULL)
 444                         c = c2;
 445                 c++;
 446
 447                 /* mirror arch objdump's space-after-comma style */
 448                 if (*c == ' ')
 449                         c++;
 450         }
 451
 452         return scnprintf(bf, size, "%-*s %.*s%" PRIx64, max_ins_name,
 453                          ins->name, c ? c - ops->raw : 0, ops->raw,
 454                          ops->target.offset);
 455 }
 456
 457 static struct ins_ops jump_ops = {
 458         .parse     = jump__parse,
 459         .scnprintf = jump__scnprintf,
 460 };
 461
 462 bool ins__is_jump(const struct ins *ins)
 463 {
 464         return ins->ops == &jump_ops;
 465 }
 466
 467 static int comment__symbol(char *raw, char *comment, u64 *addrp, char **namep)
 468 {
 469         char *endptr, *name, *t;
 470
 471         if (strstr(raw, "(%rip)") == NULL)
 472                 return 0;
 473
 474         *addrp = strtoull(comment, &endptr, 16);
 475         if (endptr == comment)
 476                 return 0;
 477         name = strchr(endptr, '<');
 478         if (name == NULL)
 479                 return -1;
 480
 481         name++;
 482
 483         t = strchr(name, '>');
 484         if (t == NULL)
 485                 return 0;
 486
 487         *t = '\0';
 488         *namep = strdup(name);
 489         *t = '>';
 490
 491         return 0;
 492 }
 493
 494 static int lock__parse(struct arch *arch, struct ins_operands *ops, struct map_symbol *ms)
 495 {
 496         ops->locked.ops = zalloc(sizeof(*ops->locked.ops));
 497         if (ops->locked.ops == NULL)
 498                 return 0;
 499
 500         if (disasm_line__parse(ops->raw, &ops->locked.ins.name, &ops->locked.ops->raw) < 0)
 501                 goto out_free_ops;
 502
 503         ops->locked.ins.ops = ins__find(arch, ops->locked.ins.name);
 504
 505         if (ops->locked.ins.ops == NULL)
 506                 goto out_free_ops;
 507
 508         if (ops->locked.ins.ops->parse &&
 509             ops->locked.ins.ops->parse(arch, ops->locked.ops, ms) < 0)
 510                 goto out_free_ops;
 511
 512         return 0;
 513
 514 out_free_ops:
 515         zfree(&ops->locked.ops);
 516         return 0;
 517 }
 518
 519 static int lock__scnprintf(struct ins *ins, char *bf, size_t size,
 520                            struct ins_operands *ops, int max_ins_name)
 521 {
 522         int printed;
 523
 524         if (ops->locked.ins.ops == NULL)
 525                 return ins__raw_scnprintf(ins, bf, size, ops, max_ins_name);
 526
 527         printed = scnprintf(bf, size, "%-*s ", max_ins_name, ins->name);
 528         return printed + ins__scnprintf(&ops->locked.ins, bf + printed,
 529                                         size - printed, ops->locked.ops, max_ins_name);
 530 }
 531
 532 static void lock__delete(struct ins_operands *ops)
 533 {
 534         struct ins *ins = &ops->locked.ins;
 535
 536         if (ins->ops && ins->ops->free)
 537                 ins->ops->free(ops->locked.ops);
 538         else
 539                 ins__delete(ops->locked.ops);
 540
 541         zfree(&ops->locked.ops);
 542         zfree(&ops->target.raw);
 543         zfree(&ops->target.name);
 544 }
 545
 546 static struct ins_ops lock_ops = {
 547         .free      = lock__delete,
 548         .parse     = lock__parse,
 549         .scnprintf = lock__scnprintf,
 550 };
 551
 552 static int mov__parse(struct arch *arch, struct ins_operands *ops, struct map_symbol *ms __maybe_unused)
 553 {
 554         char *s = strchr(ops->raw, ','), *target, *comment, prev;
 555
 556         if (s == NULL)
 557                 return -1;
 558
 559         *s = '\0';
 560         ops->source.raw = strdup(ops->raw);
 561         *s = ',';
 562
 563         if (ops->source.raw == NULL)
 564                 return -1;
 565
 566         target = ++s;
 567         comment = strchr(s, arch->objdump.comment_char);
 568
 569         if (comment != NULL)
 570                 s = comment - 1;
 571         else
 572                 s = strchr(s, '\0') - 1;
 573
 574         while (s > target && isspace(s[0]))
 575                 --s;
 576         s++;
 577         prev = *s;
 578         *s = '\0';
 579
 580         ops->target.raw = strdup(target);
 581         *s = prev;
 582
 583         if (ops->target.raw == NULL)
 584                 goto out_free_source;
 585
 586         if (comment == NULL)
 587                 return 0;
 588
 589         comment = skip_spaces(comment);
 590         comment__symbol(ops->source.raw, comment + 1, &ops->source.addr, &ops->source.name);
 591         comment__symbol(ops->target.raw, comment + 1, &ops->target.addr, &ops->target.name);
 592
 593         return 0;
 594
 595 out_free_source:
 596         zfree(&ops->source.raw);
 597         return -1;
 598 }
 599
 600 static int mov__scnprintf(struct ins *ins, char *bf, size_t size,
 601                            struct ins_operands *ops, int max_ins_name)
 602 {
 603         return scnprintf(bf, size, "%-*s %s,%s", max_ins_name, ins->name,
 604                          ops->source.name ?: ops->source.raw,
 605                          ops->target.name ?: ops->target.raw);
 606 }
 607
 608 static struct ins_ops mov_ops = {
 609         .parse     = mov__parse,
 610         .scnprintf = mov__scnprintf,
 611 };
 612
 613 static int dec__parse(struct arch *arch __maybe_unused, struct ins_operands *ops, struct map_symbol *ms __maybe_unused)
 614 {
 615         char *target, *comment, *s, prev;
 616
 617         target = s = ops->raw;
 618
 619         while (s[0] != '\0' && !isspace(s[0]))
 620                 ++s;
 621         prev = *s;
 622         *s = '\0';
 623
 624         ops->target.raw = strdup(target);
 625         *s = prev;
 626
 627         if (ops->target.raw == NULL)
 628                 return -1;
 629
 630         comment = strchr(s, arch->objdump.comment_char);
 631         if (comment == NULL)
 632                 return 0;
 633
 634         comment = skip_spaces(comment);
 635         comment__symbol(ops->target.raw, comment + 1, &ops->target.addr, &ops->target.name);
 636
 637         return 0;
 638 }
 639
 640 static int dec__scnprintf(struct ins *ins, char *bf, size_t size,
 641                            struct ins_operands *ops, int max_ins_name)
 642 {
 643         return scnprintf(bf, size, "%-*s %s", max_ins_name, ins->name,
 644                          ops->target.name ?: ops->target.raw);
 645 }
 646
 647 static struct ins_ops dec_ops = {
 648         .parse     = dec__parse,
 649         .scnprintf = dec__scnprintf,
 650 };
 651
 652 static int nop__scnprintf(struct ins *ins __maybe_unused, char *bf, size_t size,
 653                           struct ins_operands *ops __maybe_unused, int max_ins_name)
 654 {
 655         return scnprintf(bf, size, "%-*s", max_ins_name, "nop");
 656 }
 657
 658 static struct ins_ops nop_ops = {
 659         .scnprintf = nop__scnprintf,
 660 };
 661
 662 static struct ins_ops ret_ops = {
 663         .scnprintf = ins__raw_scnprintf,
 664 };
 665
 666 bool ins__is_ret(const struct ins *ins)
 667 {
 668         return ins->ops == &ret_ops;
 669 }
 670
 671 bool ins__is_lock(const struct ins *ins)
 672 {
 673         return ins->ops == &lock_ops;
 674 }
 675
 676 static int ins__key_cmp(const void *name, const void *insp)
 677 {
 678         const struct ins *ins = insp;
 679
 680         return strcmp(name, ins->name);
 681 }
 682
 683 static int ins__cmp(const void *a, const void *b)
 684 {
 685         const struct ins *ia = a;
 686         const struct ins *ib = b;
 687
 688         return strcmp(ia->name, ib->name);
 689 }
 690
 691 static void ins__sort(struct arch *arch)
 692 {
 693         const int nmemb = arch->nr_instructions;
 694
 695         qsort(arch->instructions, nmemb, sizeof(struct ins), ins__cmp);
 696 }
 697
 698 static struct ins_ops *__ins__find(struct arch *arch, const char *name)
 699 {
 700         struct ins *ins;
 701         const int nmemb = arch->nr_instructions;
 702
 703         if (!arch->sorted_instructions) {
 704                 ins__sort(arch);
 705                 arch->sorted_instructions = true;
 706         }
 707
 708         ins = bsearch(name, arch->instructions, nmemb, sizeof(struct ins), ins__key_cmp);
 709         return ins ? ins->ops : NULL;
 710 }
 711
 712 static struct ins_ops *ins__find(struct arch *arch, const char *name)
 713 {
 714         struct ins_ops *ops = __ins__find(arch, name);
 715
 716         if (!ops && arch->associate_instruction_ops)
 717                 ops = arch->associate_instruction_ops(arch, name);
 718
 719         return ops;
 720 }
 721
 722 static int arch__key_cmp(const void *name, const void *archp)
 723 {
 724         const struct arch *arch = archp;
 725
 726         return strcmp(name, arch->name);
 727 }
 728
 729 static int arch__cmp(const void *a, const void *b)
 730 {
 731         const struct arch *aa = a;
 732         const struct arch *ab = b;
 733
 734         return strcmp(aa->name, ab->name);
 735 }
 736
 737 static void arch__sort(void)
 738 {
 739         const int nmemb = ARRAY_SIZE(architectures);
 740
 741         qsort(architectures, nmemb, sizeof(struct arch), arch__cmp);
 742 }
 743
 744 static struct arch *arch__find(const char *name)
 745 {
 746         const int nmemb = ARRAY_SIZE(architectures);
 747         static bool sorted;
 748
 749         if (!sorted) {
 750                 arch__sort();
 751                 sorted = true;
 752         }
 753
 754         return bsearch(name, architectures, nmemb, sizeof(struct arch), arch__key_cmp);
 755 }
 756
 757 static struct annotated_source *annotated_source__new(void)
 758 {
 759         struct annotated_source *src = zalloc(sizeof(*src));
 760
 761         if (src != NULL)
 762                 INIT_LIST_HEAD(&src->source);
 763
 764         return src;
 765 }
 766
 767 static __maybe_unused void annotated_source__delete(struct annotated_source *src)
 768 {
 769         if (src == NULL)
 770                 return;
 771         zfree(&src->histograms);
 772         zfree(&src->cycles_hist);
 773         free(src);
 774 }
 775
 776 static int annotated_source__alloc_histograms(struct annotated_source *src,
 777                                               size_t size, int nr_hists)
 778 {
 779         size_t sizeof_sym_hist;
 780
 781         /*
 782          * Add buffer of one element for zero length symbol.
 783          * When sample is taken from first instruction of
 784          * zero length symbol, perf still resolves it and
 785          * shows symbol name in perf report and allows to
 786          * annotate it.
 787          */
 788         if (size == 0)
 789                 size = 1;
 790
 791         /* Check for overflow when calculating sizeof_sym_hist */
 792         if (size > (SIZE_MAX - sizeof(struct sym_hist)) / sizeof(struct sym_hist_entry))
 793                 return -1;
 794
 795         sizeof_sym_hist = (sizeof(struct sym_hist) + size * sizeof(struct sym_hist_entry));
 796
 797         /* Check for overflow in zalloc argument */
 798         if (sizeof_sym_hist > SIZE_MAX / nr_hists)
 799                 return -1;
 800
 801         src->sizeof_sym_hist = sizeof_sym_hist;
 802         src->nr_histograms   = nr_hists;
 803         src->histograms      = calloc(nr_hists, sizeof_sym_hist) ;
 804         return src->histograms ? 0 : -1;
 805 }
 806
 807 /* The cycles histogram is lazily allocated. */
 808 static int symbol__alloc_hist_cycles(struct symbol *sym)
 809 {
 810         struct annotation *notes = symbol__annotation(sym);
 811         const size_t size = symbol__size(sym);
 812
 813         notes->src->cycles_hist = calloc(size, sizeof(struct cyc_hist));
 814         if (notes->src->cycles_hist == NULL)
 815                 return -1;
 816         return 0;
 817 }
 818
 819 void symbol__annotate_zero_histograms(struct symbol *sym)
 820 {
 821         struct annotation *notes = symbol__annotation(sym);
 822
 823         mutex_lock(&notes->lock);
 824         if (notes->src != NULL) {
 825                 memset(notes->src->histograms, 0,
 826                        notes->src->nr_histograms * notes->src->sizeof_sym_hist);
 827                 if (notes->src->cycles_hist)
 828                         memset(notes->src->cycles_hist, 0,
 829                                 symbol__size(sym) * sizeof(struct cyc_hist));
 830         }
 831         mutex_unlock(&notes->lock);
 832 }
 833
 834 static int __symbol__account_cycles(struct cyc_hist *ch,
 835                                     u64 start,
 836                                     unsigned offset, unsigned cycles,
 837                                     unsigned have_start)
 838 {
 839         /*
 840          * For now we can only account one basic block per
 841          * final jump. But multiple could be overlapping.
 842          * Always account the longest one. So when
 843          * a shorter one has been already seen throw it away.
 844          *
 845          * We separately always account the full cycles.
 846          */
 847         ch[offset].num_aggr++;
 848         ch[offset].cycles_aggr += cycles;
 849
 850         if (cycles > ch[offset].cycles_max)
 851                 ch[offset].cycles_max = cycles;
 852
 853         if (ch[offset].cycles_min) {
 854                 if (cycles && cycles < ch[offset].cycles_min)
 855                         ch[offset].cycles_min = cycles;
 856         } else
 857                 ch[offset].cycles_min = cycles;
 858
 859         if (!have_start && ch[offset].have_start)
 860                 return 0;
 861         if (ch[offset].num) {
 862                 if (have_start && (!ch[offset].have_start ||
 863                                    ch[offset].start > start)) {
 864                         ch[offset].have_start = 0;
 865                         ch[offset].cycles = 0;
 866                         ch[offset].num = 0;
 867                         if (ch[offset].reset < 0xffff)
 868                                 ch[offset].reset++;
 869                 } else if (have_start &&
 870                            ch[offset].start < start)
 871                         return 0;
 872         }
 873
 874         if (ch[offset].num < NUM_SPARKS)
 875                 ch[offset].cycles_spark[ch[offset].num] = cycles;
 876
 877         ch[offset].have_start = have_start;
 878         ch[offset].start = start;
 879         ch[offset].cycles += cycles;
 880         ch[offset].num++;
 881         return 0;
 882 }
 883
 884 static int __symbol__inc_addr_samples(struct map_symbol *ms,
 885                                       struct annotated_source *src, int evidx, u64 addr,
 886                                       struct perf_sample *sample)
 887 {
 888         struct symbol *sym = ms->sym;
 889         unsigned offset;
 890         struct sym_hist *h;
 891
 892         pr_debug3("%s: addr=%#" PRIx64 "\n", __func__, ms->map->unmap_ip(ms->map, addr));
 893
 894         if ((addr < sym->start || addr >= sym->end) &&
 895             (addr != sym->end || sym->start != sym->end)) {
 896                 pr_debug("%s(%d): ERANGE! sym->name=%s, start=%#" PRIx64 ", addr=%#" PRIx64 ", end=%#" PRIx64 "\n",
 897                        __func__, __LINE__, sym->name, sym->start, addr, sym->end);
 898                 return -ERANGE;
 899         }
 900
 901         offset = addr - sym->start;
 902         h = annotated_source__histogram(src, evidx);
 903         if (h == NULL) {
 904                 pr_debug("%s(%d): ENOMEM! sym->name=%s, start=%#" PRIx64 ", addr=%#" PRIx64 ", end=%#" PRIx64 ", func: %d\n",
 905                          __func__, __LINE__, sym->name, sym->start, addr, sym->end, sym->type == STT_FUNC);
 906                 return -ENOMEM;
 907         }
 908         h->nr_samples++;
 909         h->addr[offset].nr_samples++;
 910         h->period += sample->period;
 911         h->addr[offset].period += sample->period;
 912
 913         pr_debug3("%#" PRIx64 " %s: period++ [addr: %#" PRIx64 ", %#" PRIx64
 914                   ", evidx=%d] => nr_samples: %" PRIu64 ", period: %" PRIu64 "\n",
 915                   sym->start, sym->name, addr, addr - sym->start, evidx,
 916                   h->addr[offset].nr_samples, h->addr[offset].period);
 917         return 0;
 918 }
 919
 920 static struct cyc_hist *symbol__cycles_hist(struct symbol *sym)
 921 {
 922         struct annotation *notes = symbol__annotation(sym);
 923
 924         if (notes->src == NULL) {
 925                 notes->src = annotated_source__new();
 926                 if (notes->src == NULL)
 927                         return NULL;
 928                 goto alloc_cycles_hist;
 929         }
 930
 931         if (!notes->src->cycles_hist) {
 932 alloc_cycles_hist:
 933                 symbol__alloc_hist_cycles(sym);
 934         }
 935
 936         return notes->src->cycles_hist;
 937 }
 938
 939 struct annotated_source *symbol__hists(struct symbol *sym, int nr_hists)
 940 {
 941         struct annotation *notes = symbol__annotation(sym);
 942
 943         if (notes->src == NULL) {
 944                 notes->src = annotated_source__new();
 945                 if (notes->src == NULL)
 946                         return NULL;
 947                 goto alloc_histograms;
 948         }
 949
 950         if (notes->src->histograms == NULL) {
 951 alloc_histograms:
 952                 annotated_source__alloc_histograms(notes->src, symbol__size(sym),
 953                                                    nr_hists);
 954         }
 955
 956         return notes->src;
 957 }
 958
 959 static int symbol__inc_addr_samples(struct map_symbol *ms,
 960                                     struct evsel *evsel, u64 addr,
 961                                     struct perf_sample *sample)
 962 {
 963         struct symbol *sym = ms->sym;
 964         struct annotated_source *src;
 965
 966         if (sym == NULL)
 967                 return 0;
 968         src = symbol__hists(sym, evsel->evlist->core.nr_entries);
 969         return src ? __symbol__inc_addr_samples(ms, src, evsel->core.idx, addr, sample) : 0;
 970 }
 971
 972 static int symbol__account_cycles(u64 addr, u64 start,
 973                                   struct symbol *sym, unsigned cycles)
 974 {
 975         struct cyc_hist *cycles_hist;
 976         unsigned offset;
 977
 978         if (sym == NULL)
 979                 return 0;
 980         cycles_hist = symbol__cycles_hist(sym);
 981         if (cycles_hist == NULL)
 982                 return -ENOMEM;
 983         if (addr < sym->start || addr >= sym->end)
 984                 return -ERANGE;
 985
 986         if (start) {
 987                 if (start < sym->start || start >= sym->end)
 988                         return -ERANGE;
 989                 if (start >= addr)
 990                         start = 0;
 991         }
 992         offset = addr - sym->start;
 993         return __symbol__account_cycles(cycles_hist,
 994                                         start ? start - sym->start : 0,
 995                                         offset, cycles,
 996                                         !!start);
 997 }
 998
 999 int addr_map_symbol__account_cycles(struct addr_map_symbol *ams,
1000                                     struct addr_map_symbol *start,
1001                                     unsigned cycles)
1002 {
1003         u64 saddr = 0;
1004         int err;
1005
1006         if (!cycles)
1007                 return 0;
1008
1009         /*
1010          * Only set start when IPC can be computed. We can only
1011          * compute it when the basic block is completely in a single
1012          * function.
1013          * Special case the case when the jump is elsewhere, but
1014          * it starts on the function start.
1015          */
1016         if (start &&
1017                 (start->ms.sym == ams->ms.sym ||
1018                  (ams->ms.sym &&
1019                    start->addr == ams->ms.sym->start + ams->ms.map->start)))
1020                 saddr = start->al_addr;
1021         if (saddr == 0)
1022                 pr_debug2("BB with bad start: addr %"PRIx64" start %"PRIx64" sym %"PRIx64" saddr %"PRIx64"\n",
1023                         ams->addr,
1024                         start ? start->addr : 0,
1025                         ams->ms.sym ? ams->ms.sym->start + ams->ms.map->start : 0,
1026                         saddr);
1027         err = symbol__account_cycles(ams->al_addr, saddr, ams->ms.sym, cycles);
1028         if (err)
1029                 pr_debug2("account_cycles failed %d\n", err);
1030         return err;
1031 }
1032
1033 static unsigned annotation__count_insn(struct annotation *notes, u64 start, u64 end)
1034 {
1035         unsigned n_insn = 0;
1036         u64 offset;
1037
1038         for (offset = start; offset <= end; offset++) {
1039                 if (notes->offsets[offset])
1040                         n_insn++;
1041         }
1042         return n_insn;
1043 }
1044
1045 static void annotation__count_and_fill(struct annotation *notes, u64 start, u64 end, struct cyc_hist *ch)
1046 {
1047         unsigned n_insn;
1048         unsigned int cover_insn = 0;
1049         u64 offset;
1050
1051         n_insn = annotation__count_insn(notes, start, end);
1052         if (n_insn && ch->num && ch->cycles) {
1053                 float ipc = n_insn / ((double)ch->cycles / (double)ch->num);
1054
1055                 /* Hide data when there are too many overlaps. */
1056                 if (ch->reset >= 0x7fff)
1057                         return;
1058
1059                 for (offset = start; offset <= end; offset++) {
1060                         struct annotation_line *al = notes->offsets[offset];
1061
1062                         if (al && al->ipc == 0.0) {
1063                                 al->ipc = ipc;
1064                                 cover_insn++;
1065                         }
1066                 }
1067
1068                 if (cover_insn) {
1069                         notes->hit_cycles += ch->cycles;
1070                         notes->hit_insn += n_insn * ch->num;
1071                         notes->cover_insn += cover_insn;
1072                 }
1073         }
1074 }
1075
1076 void annotation__compute_ipc(struct annotation *notes, size_t size)
1077 {
1078         s64 offset;
1079
1080         if (!notes->src || !notes->src->cycles_hist)
1081                 return;
1082
1083         notes->total_insn = annotation__count_insn(notes, 0, size - 1);
1084         notes->hit_cycles = 0;
1085         notes->hit_insn = 0;
1086         notes->cover_insn = 0;
1087
1088         mutex_lock(&notes->lock);
1089         for (offset = size - 1; offset >= 0; --offset) {
1090                 struct cyc_hist *ch;
1091
1092                 ch = &notes->src->cycles_hist[offset];
1093                 if (ch && ch->cycles) {
1094                         struct annotation_line *al;
1095
1096                         if (ch->have_start)
1097                                 annotation__count_and_fill(notes, ch->start, offset, ch);
1098                         al = notes->offsets[offset];
1099                         if (al && ch->num_aggr) {
1100                                 al->cycles = ch->cycles_aggr / ch->num_aggr;
1101                                 al->cycles_max = ch->cycles_max;
1102                                 al->cycles_min = ch->cycles_min;
1103                         }
1104                         notes->have_cycles = true;
1105                 }
1106         }
1107         mutex_unlock(&notes->lock);
1108 }
1109
1110 int addr_map_symbol__inc_samples(struct addr_map_symbol *ams, struct perf_sample *sample,
1111                                  struct evsel *evsel)
1112 {
1113         return symbol__inc_addr_samples(&ams->ms, evsel, ams->al_addr, sample);
1114 }
1115
1116 int hist_entry__inc_addr_samples(struct hist_entry *he, struct perf_sample *sample,
1117                                  struct evsel *evsel, u64 ip)
1118 {
1119         return symbol__inc_addr_samples(&he->ms, evsel, ip, sample);
1120 }
1121
1122 static void disasm_line__init_ins(struct disasm_line *dl, struct arch *arch, struct map_symbol *ms)
1123 {
1124         dl->ins.ops = ins__find(arch, dl->ins.name);
1125
1126         if (!dl->ins.ops)
1127                 return;
1128
1129         if (dl->ins.ops->parse && dl->ins.ops->parse(arch, &dl->ops, ms) < 0)
1130                 dl->ins.ops = NULL;
1131 }
1132
1133 static int disasm_line__parse(char *line, const char **namep, char **rawp)
1134 {
1135         char tmp, *name = skip_spaces(line);
1136
1137         if (name[0] == '\0')
1138                 return -1;
1139
1140         *rawp = name + 1;
1141
1142         while ((*rawp)[0] != '\0' && !isspace((*rawp)[0]))
1143                 ++*rawp;
1144
1145         tmp = (*rawp)[0];
1146         (*rawp)[0] = '\0';
1147         *namep = strdup(name);
1148
1149         if (*namep == NULL)
1150                 goto out;
1151
1152         (*rawp)[0] = tmp;
1153         *rawp = strim(*rawp);
1154
1155         return 0;
1156
1157 out:
1158         return -1;
1159 }
1160
1161 struct annotate_args {
1162         struct arch               *arch;
1163         struct map_symbol         ms;
1164         struct evsel              *evsel;
1165         struct annotation_options *options;
1166         s64                       offset;
1167         char                      *line;
1168         int                       line_nr;
1169         char                      *fileloc;
1170 };
1171
1172 static void annotation_line__init(struct annotation_line *al,
1173                                   struct annotate_args *args,
1174                                   int nr)
1175 {
1176         al->offset = args->offset;
1177         al->line = strdup(args->line);
1178         al->line_nr = args->line_nr;
1179         al->fileloc = args->fileloc;
1180         al->data_nr = nr;
1181 }
1182
1183 static void annotation_line__exit(struct annotation_line *al)
1184 {
1185         free_srcline(al->path);
1186         zfree(&al->line);
1187 }
1188
1189 static size_t disasm_line_size(int nr)
1190 {
1191         struct annotation_line *al;
1192
1193         return (sizeof(struct disasm_line) + (sizeof(al->data[0]) * nr));
1194 }
1195
1196 /*
1197  * Allocating the disasm annotation line data with
1198  * following structure:
1199  *
1200  *    -------------------------------------------
1201  *    struct disasm_line | struct annotation_line
1202  *    -------------------------------------------
1203  *
1204  * We have 'struct annotation_line' member as last member
1205  * of 'struct disasm_line' to have an easy access.
1206  */
1207 static struct disasm_line *disasm_line__new(struct annotate_args *args)
1208 {
1209         struct disasm_line *dl = NULL;
1210         int nr = 1;
1211
1212         if (evsel__is_group_event(args->evsel))
1213                 nr = args->evsel->core.nr_members;
1214
1215         dl = zalloc(disasm_line_size(nr));
1216         if (!dl)
1217                 return NULL;
1218
1219         annotation_line__init(&dl->al, args, nr);
1220         if (dl->al.line == NULL)
1221                 goto out_delete;
1222
1223         if (args->offset != -1) {
1224                 if (disasm_line__parse(dl->al.line, &dl->ins.name, &dl->ops.raw) < 0)
1225                         goto out_free_line;
1226
1227                 disasm_line__init_ins(dl, args->arch, &args->ms);
1228         }
1229
1230         return dl;
1231
1232 out_free_line:
1233         zfree(&dl->al.line);
1234 out_delete:
1235         free(dl);
1236         return NULL;
1237 }
1238
1239 void disasm_line__free(struct disasm_line *dl)
1240 {
1241         if (dl->ins.ops && dl->ins.ops->free)
1242                 dl->ins.ops->free(&dl->ops);
1243         else
1244                 ins__delete(&dl->ops);
1245         zfree(&dl->ins.name);
1246         annotation_line__exit(&dl->al);
1247         free(dl);
1248 }
1249
1250 int disasm_line__scnprintf(struct disasm_line *dl, char *bf, size_t size, bool raw, int max_ins_name)
1251 {
1252         if (raw || !dl->ins.ops)
1253                 return scnprintf(bf, size, "%-*s %s", max_ins_name, dl->ins.name, dl->ops.raw);
1254
1255         return ins__scnprintf(&dl->ins, bf, size, &dl->ops, max_ins_name);
1256 }
1257
1258 void annotation__init(struct annotation *notes)
1259 {
1260         mutex_init(&notes->lock);
1261 }
1262
1263 void annotation__exit(struct annotation *notes)
1264 {
1265         annotated_source__delete(notes->src);
1266         mutex_destroy(&notes->lock);
1267 }
1268
1269 static void annotation_line__add(struct annotation_line *al, struct list_head *head)
1270 {
1271         list_add_tail(&al->node, head);
1272 }
1273
1274 struct annotation_line *
1275 annotation_line__next(struct annotation_line *pos, struct list_head *head)
1276 {
1277         list_for_each_entry_continue(pos, head, node)
1278                 if (pos->offset >= 0)
1279                         return pos;
1280
1281         return NULL;
1282 }
1283
1284 static const char *annotate__address_color(struct block_range *br)
1285 {
1286         double cov = block_range__coverage(br);
1287
1288         if (cov >= 0) {
1289                 /* mark red for >75% coverage */
1290                 if (cov > 0.75)
1291                         return PERF_COLOR_RED;
1292
1293                 /* mark dull for <1% coverage */
1294                 if (cov < 0.01)
1295                         return PERF_COLOR_NORMAL;
1296         }
1297
1298         return PERF_COLOR_MAGENTA;
1299 }
1300
1301 static const char *annotate__asm_color(struct block_range *br)
1302 {
1303         double cov = block_range__coverage(br);
1304
1305         if (cov >= 0) {
1306                 /* mark dull for <1% coverage */
1307                 if (cov < 0.01)
1308                         return PERF_COLOR_NORMAL;
1309         }
1310
1311         return PERF_COLOR_BLUE;
1312 }
1313
1314 static void annotate__branch_printf(struct block_range *br, u64 addr)
1315 {
1316         bool emit_comment = true;
1317
1318         if (!br)
1319                 return;
1320
1321 #if 1
1322         if (br->is_target && br->start == addr) {
1323                 struct block_range *branch = br;
1324                 double p;
1325
1326                 /*
1327                  * Find matching branch to our target.
1328                  */
1329                 while (!branch->is_branch)
1330                         branch = block_range__next(branch);
1331
1332                 p = 100 *(double)br->entry / branch->coverage;
1333
1334                 if (p > 0.1) {
1335                         if (emit_comment) {
1336                                 emit_comment = false;
1337                                 printf("\t#");
1338                         }
1339
1340                         /*
1341                          * The percentage of coverage joined at this target in relation
1342                          * to the next branch.
1343                          */
1344                         printf(" +%.2f%%", p);
1345                 }
1346         }
1347 #endif
1348         if (br->is_branch && br->end == addr) {
1349                 double p = 100*(double)br->taken / br->coverage;
1350
1351                 if (p > 0.1) {
1352                         if (emit_comment) {
1353                                 emit_comment = false;
1354                                 printf("\t#");
1355                         }
1356
1357                         /*
1358                          * The percentage of coverage leaving at this branch, and
1359                          * its prediction ratio.
1360                          */
1361                         printf(" -%.2f%% (p:%.2f%%)", p, 100*(double)br->pred  / br->taken);
1362                 }
1363         }
1364 }
1365
1366 static int disasm_line__print(struct disasm_line *dl, u64 start, int addr_fmt_width)
1367 {
1368         s64 offset = dl->al.offset;
1369         const u64 addr = start + offset;
1370         struct block_range *br;
1371
1372         br = block_range__find(addr);
1373         color_fprintf(stdout, annotate__address_color(br), "  %*" PRIx64 ":", addr_fmt_width, addr);
1374         color_fprintf(stdout, annotate__asm_color(br), "%s", dl->al.line);
1375         annotate__branch_printf(br, addr);
1376         return 0;
1377 }
1378
1379 static int
1380 annotation_line__print(struct annotation_line *al, struct symbol *sym, u64 start,
1381                        struct evsel *evsel, u64 len, int min_pcnt, int printed,
1382                        int max_lines, struct annotation_line *queue, int addr_fmt_width,
1383                        int percent_type)
1384 {
1385         struct disasm_line *dl = container_of(al, struct disasm_line, al);
1386         static const char *prev_line;
1387
1388         if (al->offset != -1) {
1389                 double max_percent = 0.0;
1390                 int i, nr_percent = 1;
1391                 const char *color;
1392                 struct annotation *notes = symbol__annotation(sym);
1393
1394                 for (i = 0; i < al->data_nr; i++) {
1395                         double percent;
1396
1397                         percent = annotation_data__percent(&al->data[i],
1398                                                            percent_type);
1399
1400                         if (percent > max_percent)
1401                                 max_percent = percent;
1402                 }
1403
1404                 if (al->data_nr > nr_percent)
1405                         nr_percent = al->data_nr;
1406
1407                 if (max_percent < min_pcnt)
1408                         return -1;
1409
1410                 if (max_lines && printed >= max_lines)
1411                         return 1;
1412
1413                 if (queue != NULL) {
1414                         list_for_each_entry_from(queue, &notes->src->source, node) {
1415                                 if (queue == al)
1416                                         break;
1417                                 annotation_line__print(queue, sym, start, evsel, len,
1418                                                        0, 0, 1, NULL, addr_fmt_width,
1419                                                        percent_type);
1420                         }
1421                 }
1422
1423                 color = get_percent_color(max_percent);
1424
1425                 for (i = 0; i < nr_percent; i++) {
1426                         struct annotation_data *data = &al->data[i];
1427                         double percent;
1428
1429                         percent = annotation_data__percent(data, percent_type);
1430                         color = get_percent_color(percent);
1431
1432                         if (symbol_conf.show_total_period)
1433                                 color_fprintf(stdout, color, " %11" PRIu64,
1434                                               data->he.period);
1435                         else if (symbol_conf.show_nr_samples)
1436                                 color_fprintf(stdout, color, " %7" PRIu64,
1437                                               data->he.nr_samples);
1438                         else
1439                                 color_fprintf(stdout, color, " %7.2f", percent);
1440                 }
1441
1442                 printf(" : ");
1443
1444                 disasm_line__print(dl, start, addr_fmt_width);
1445
1446                 /*
1447                  * Also color the filename and line if needed, with
1448                  * the same color than the percentage. Don't print it
1449                  * twice for close colored addr with the same filename:line
1450                  */
1451                 if (al->path) {
1452                         if (!prev_line || strcmp(prev_line, al->path)) {
1453                                 color_fprintf(stdout, color, " // %s", al->path);
1454                                 prev_line = al->path;
1455                         }
1456                 }
1457
1458                 printf("\n");
1459         } else if (max_lines && printed >= max_lines)
1460                 return 1;
1461         else {
1462                 int width = symbol_conf.show_total_period ? 12 : 8;
1463
1464                 if (queue)
1465                         return -1;
1466
1467                 if (evsel__is_group_event(evsel))
1468                         width *= evsel->core.nr_members;
1469
1470                 if (!*al->line)
1471                         printf(" %*s:\n", width, " ");
1472                 else
1473                         printf(" %*s: %-*d %s\n", width, " ", addr_fmt_width, al->line_nr, al->line);
1474         }
1475
1476         return 0;
1477 }
1478
1479 /*
1480  * symbol__parse_objdump_line() parses objdump output (with -d --no-show-raw)
1481  * which looks like following
1482  *
1483  *  0000000000415500 <_init>:
1484  *    415500:       sub    $0x8,%rsp
1485  *    415504:       mov    0x2f5ad5(%rip),%rax        # 70afe0 <_DYNAMIC+0x2f8>
1486  *    41550b:       test   %rax,%rax
1487  *    41550e:       je     415515 <_init+0x15>
1488  *    415510:       callq  416e70 <__gmon_start__@plt>
1489  *    415515:       add    $0x8,%rsp
1490  *    415519:       retq
1491  *
1492  * it will be parsed and saved into struct disasm_line as
1493  *  <offset>       <name>  <ops.raw>
1494  *
1495  * The offset will be a relative offset from the start of the symbol and -1
1496  * means that it's not a disassembly line so should be treated differently.
1497  * The ops.raw part will be parsed further according to type of the instruction.
1498  */
1499 static int symbol__parse_objdump_line(struct symbol *sym,
1500                                       struct annotate_args *args,
1501                                       char *parsed_line, int *line_nr, char **fileloc)
1502 {
1503         struct map *map = args->ms.map;
1504         struct annotation *notes = symbol__annotation(sym);
1505         struct disasm_line *dl;
1506         char *tmp;
1507         s64 line_ip, offset = -1;
1508         regmatch_t match[2];
1509
1510         /* /filename:linenr ? Save line number and ignore. */
1511         if (regexec(&file_lineno, parsed_line, 2, match, 0) == 0) {
1512                 *line_nr = atoi(parsed_line + match[1].rm_so);
1513                 *fileloc = strdup(parsed_line);
1514                 return 0;
1515         }
1516
1517         /* Process hex address followed by ':'. */
1518         line_ip = strtoull(parsed_line, &tmp, 16);
1519         if (parsed_line != tmp && tmp[0] == ':' && tmp[1] != '\0') {
1520                 u64 start = map__rip_2objdump(map, sym->start),
1521                     end = map__rip_2objdump(map, sym->end);
1522
1523                 offset = line_ip - start;
1524                 if ((u64)line_ip < start || (u64)line_ip >= end)
1525                         offset = -1;
1526                 else
1527                         parsed_line = tmp + 1;
1528         }
1529
1530         args->offset  = offset;
1531         args->line    = parsed_line;
1532         args->line_nr = *line_nr;
1533         args->fileloc = *fileloc;
1534         args->ms.sym  = sym;
1535
1536         dl = disasm_line__new(args);
1537         (*line_nr)++;
1538
1539         if (dl == NULL)
1540                 return -1;
1541
1542         if (!disasm_line__has_local_offset(dl)) {
1543                 dl->ops.target.offset = dl->ops.target.addr -
1544                                         map__rip_2objdump(map, sym->start);
1545                 dl->ops.target.offset_avail = true;
1546         }
1547
1548         /* kcore has no symbols, so add the call target symbol */
1549         if (dl->ins.ops && ins__is_call(&dl->ins) && !dl->ops.target.sym) {
1550                 struct addr_map_symbol target = {
1551                         .addr = dl->ops.target.addr,
1552                         .ms = { .map = map, },
1553                 };
1554
1555                 if (!maps__find_ams(args->ms.maps, &target) &&
1556                     target.ms.sym->start == target.al_addr)
1557                         dl->ops.target.sym = target.ms.sym;
1558         }
1559
1560         annotation_line__add(&dl->al, &notes->src->source);
1561
1562         return 0;
1563 }
1564
1565 static __attribute__((constructor)) void symbol__init_regexpr(void)
1566 {
1567         regcomp(&file_lineno, "^/[^:]+:([0-9]+)", REG_EXTENDED);
1568 }
1569
1570 static void delete_last_nop(struct symbol *sym)
1571 {
1572         struct annotation *notes = symbol__annotation(sym);
1573         struct list_head *list = &notes->src->source;
1574         struct disasm_line *dl;
1575
1576         while (!list_empty(list)) {
1577                 dl = list_entry(list->prev, struct disasm_line, al.node);
1578
1579                 if (dl->ins.ops) {
1580                         if (dl->ins.ops != &nop_ops)
1581                                 return;
1582                 } else {
1583                         if (!strstr(dl->al.line, " nop ") &&
1584                             !strstr(dl->al.line, " nopl ") &&
1585                             !strstr(dl->al.line, " nopw "))
1586                                 return;
1587                 }
1588
1589                 list_del_init(&dl->al.node);
1590                 disasm_line__free(dl);
1591         }
1592 }
1593
1594 int symbol__strerror_disassemble(struct map_symbol *ms, int errnum, char *buf, size_t buflen)
1595 {
1596         struct dso *dso = ms->map->dso;
1597
1598         BUG_ON(buflen == 0);
1599
1600         if (errnum >= 0) {
1601                 str_error_r(errnum, buf, buflen);
1602                 return 0;
1603         }
1604
1605         switch (errnum) {
1606         case SYMBOL_ANNOTATE_ERRNO__NO_VMLINUX: {
1607                 char bf[SBUILD_ID_SIZE + 15] = " with build id ";
1608                 char *build_id_msg = NULL;
1609
1610                 if (dso->has_build_id) {
1611                         build_id__sprintf(&dso->bid, bf + 15);
1612                         build_id_msg = bf;
1613                 }
1614                 scnprintf(buf, buflen,
1615                           "No vmlinux file%s\nwas found in the path.\n\n"
1616                           "Note that annotation using /proc/kcore requires CAP_SYS_RAWIO capability.\n\n"
1617                           "Please use:\n\n"
1618                           "  perf buildid-cache -vu vmlinux\n\n"
1619                           "or:\n\n"
1620                           "  --vmlinux vmlinux\n", build_id_msg ?: "");
1621         }
1622                 break;
1623         case SYMBOL_ANNOTATE_ERRNO__NO_LIBOPCODES_FOR_BPF:
1624                 scnprintf(buf, buflen, "Please link with binutils's libopcode to enable BPF annotation");
1625                 break;
1626         case SYMBOL_ANNOTATE_ERRNO__ARCH_INIT_REGEXP:
1627                 scnprintf(buf, buflen, "Problems with arch specific instruction name regular expressions.");
1628                 break;
1629         case SYMBOL_ANNOTATE_ERRNO__ARCH_INIT_CPUID_PARSING:
1630                 scnprintf(buf, buflen, "Problems while parsing the CPUID in the arch specific initialization.");
1631                 break;
1632         case SYMBOL_ANNOTATE_ERRNO__BPF_INVALID_FILE:
1633                 scnprintf(buf, buflen, "Invalid BPF file: %s.", dso->long_name);
1634                 break;
1635         case SYMBOL_ANNOTATE_ERRNO__BPF_MISSING_BTF:
1636                 scnprintf(buf, buflen, "The %s BPF file has no BTF section, compile with -g or use pahole -J.",
1637                           dso->long_name);
1638                 break;
1639         default:
1640                 scnprintf(buf, buflen, "Internal error: Invalid %d error code\n", errnum);
1641                 break;
1642         }
1643
1644         return 0;
1645 }
1646
1647 static int dso__disassemble_filename(struct dso *dso, char *filename, size_t filename_size)
1648 {
1649         char linkname[PATH_MAX];
1650         char *build_id_filename;
1651         char *build_id_path = NULL;
1652         char *pos;
1653         int len;
1654
1655         if (dso->symtab_type == DSO_BINARY_TYPE__KALLSYMS &&
1656             !dso__is_kcore(dso))
1657                 return SYMBOL_ANNOTATE_ERRNO__NO_VMLINUX;
1658
1659         build_id_filename = dso__build_id_filename(dso, NULL, 0, false);
1660         if (build_id_filename) {
1661                 __symbol__join_symfs(filename, filename_size, build_id_filename);
1662                 free(build_id_filename);
1663         } else {
1664                 if (dso->has_build_id)
1665                         return ENOMEM;
1666                 goto fallback;
1667         }
1668
1669         build_id_path = strdup(filename);
1670         if (!build_id_path)
1671                 return ENOMEM;
1672
1673         /*
1674          * old style build-id cache has name of XX/XXXXXXX.. while
1675          * new style has XX/XXXXXXX../{elf,kallsyms,vdso}.
1676          * extract the build-id part of dirname in the new style only.
1677          */
1678         pos = strrchr(build_id_path, '/');
1679         if (pos && strlen(pos) < SBUILD_ID_SIZE - 2)
1680                 dirname(build_id_path);
1681
1682         if (dso__is_kcore(dso))
1683                 goto fallback;
1684
1685         len = readlink(build_id_path, linkname, sizeof(linkname) - 1);
1686         if (len < 0)
1687                 goto fallback;
1688
1689         linkname[len] = '\0';
1690         if (strstr(linkname, DSO__NAME_KALLSYMS) ||
1691                 access(filename, R_OK)) {
1692 fallback:
1693                 /*
1694                  * If we don't have build-ids or the build-id file isn't in the
1695                  * cache, or is just a kallsyms file, well, lets hope that this
1696                  * DSO is the same as when 'perf record' ran.
1697                  */
1698                 __symbol__join_symfs(filename, filename_size, dso->long_name);
1699
1700                 mutex_lock(&dso->lock);
1701                 if (access(filename, R_OK) && errno == ENOENT && dso->nsinfo) {
1702                         char *new_name = filename_with_chroot(dso->nsinfo->pid,
1703                                                               filename);
1704                         if (new_name) {
1705                                 strlcpy(filename, new_name, filename_size);
1706                                 free(new_name);
1707                         }
1708                 }
1709                 mutex_unlock(&dso->lock);
1710         }
1711
1712         free(build_id_path);
1713         return 0;
1714 }
1715
1716 #if defined(HAVE_LIBBFD_SUPPORT) && defined(HAVE_LIBBPF_SUPPORT)
1717 #define PACKAGE "perf"
1718 #include <bfd.h>
1719 #include <dis-asm.h>
1720 #include <bpf/bpf.h>
1721 #include <bpf/btf.h>
1722 #include <bpf/libbpf.h>
1723 #include <linux/btf.h>
1724 #include <tools/dis-asm-compat.h>
1725
1726 static int symbol__disassemble_bpf(struct symbol *sym,
1727                                    struct annotate_args *args)
1728 {
1729         struct annotation *notes = symbol__annotation(sym);
1730         struct annotation_options *opts = args->options;
1731         struct bpf_prog_linfo *prog_linfo = NULL;
1732         struct bpf_prog_info_node *info_node;
1733         int len = sym->end - sym->start;
1734         disassembler_ftype disassemble;
1735         struct map *map = args->ms.map;
1736         struct perf_bpil *info_linear;
1737         struct disassemble_info info;
1738         struct dso *dso = map->dso;
1739         int pc = 0, count, sub_id;
1740         struct btf *btf = NULL;
1741         char tpath[PATH_MAX];
1742         size_t buf_size;
1743         int nr_skip = 0;
1744         char *buf;
1745         bfd *bfdf;
1746         int ret;
1747         FILE *s;
1748
1749         if (dso->binary_type != DSO_BINARY_TYPE__BPF_PROG_INFO)
1750                 return SYMBOL_ANNOTATE_ERRNO__BPF_INVALID_FILE;
1751
1752         pr_debug("%s: handling sym %s addr %" PRIx64 " len %" PRIx64 "\n", __func__,
1753                   sym->name, sym->start, sym->end - sym->start);
1754
1755         memset(tpath, 0, sizeof(tpath));
1756         perf_exe(tpath, sizeof(tpath));
1757
1758         bfdf = bfd_openr(tpath, NULL);
1759         assert(bfdf);
1760         assert(bfd_check_format(bfdf, bfd_object));
1761
1762         s = open_memstream(&buf, &buf_size);
1763         if (!s) {
1764                 ret = errno;
1765                 goto out;
1766         }
1767         init_disassemble_info_compat(&info, s,
1768                                      (fprintf_ftype) fprintf,
1769                                      fprintf_styled);
1770         info.arch = bfd_get_arch(bfdf);
1771         info.mach = bfd_get_mach(bfdf);
1772
1773         info_node = perf_env__find_bpf_prog_info(dso->bpf_prog.env,
1774                                                  dso->bpf_prog.id);
1775         if (!info_node) {
1776                 ret = SYMBOL_ANNOTATE_ERRNO__BPF_MISSING_BTF;
1777                 goto out;
1778         }
1779         info_linear = info_node->info_linear;
1780         sub_id = dso->bpf_prog.sub_id;
1781
1782         info.buffer = (void *)(uintptr_t)(info_linear->info.jited_prog_insns);
1783         info.buffer_length = info_linear->info.jited_prog_len;
1784
1785         if (info_linear->info.nr_line_info)
1786                 prog_linfo = bpf_prog_linfo__new(&info_linear->info);
1787
1788         if (info_linear->info.btf_id) {
1789                 struct btf_node *node;
1790
1791                 node = perf_env__find_btf(dso->bpf_prog.env,
1792                                           info_linear->info.btf_id);
1793                 if (node)
1794                         btf = btf__new((__u8 *)(node->data),
1795                                        node->data_size);
1796         }
1797
1798         disassemble_init_for_target(&info);
1799
1800 #ifdef DISASM_FOUR_ARGS_SIGNATURE
1801         disassemble = disassembler(info.arch,
1802                                    bfd_big_endian(bfdf),
1803                                    info.mach,
1804                                    bfdf);
1805 #else
1806         disassemble = disassembler(bfdf);
1807 #endif
1808         assert(disassemble);
1809
1810         fflush(s);
1811         do {
1812                 const struct bpf_line_info *linfo = NULL;
1813                 struct disasm_line *dl;
1814                 size_t prev_buf_size;
1815                 const char *srcline;
1816                 u64 addr;
1817
1818                 addr = pc + ((u64 *)(uintptr_t)(info_linear->info.jited_ksyms))[sub_id];
1819                 count = disassemble(pc, &info);
1820
1821                 if (prog_linfo)
1822                         linfo = bpf_prog_linfo__lfind_addr_func(prog_linfo,
1823                                                                 addr, sub_id,
1824                                                                 nr_skip);
1825
1826                 if (linfo && btf) {
1827                         srcline = btf__name_by_offset(btf, linfo->line_off);
1828                         nr_skip++;
1829                 } else
1830                         srcline = NULL;
1831
1832                 fprintf(s, "\n");
1833                 prev_buf_size = buf_size;
1834                 fflush(s);
1835
1836                 if (!opts->hide_src_code && srcline) {
1837                         args->offset = -1;
1838                         args->line = strdup(srcline);
1839                         args->line_nr = 0;
1840                         args->fileloc = NULL;
1841                         args->ms.sym  = sym;
1842                         dl = disasm_line__new(args);
1843                         if (dl) {
1844                                 annotation_line__add(&dl->al,
1845                                                      &notes->src->source);
1846                         }
1847                 }
1848
1849                 args->offset = pc;
1850                 args->line = buf + prev_buf_size;
1851                 args->line_nr = 0;
1852                 args->fileloc = NULL;
1853                 args->ms.sym  = sym;
1854                 dl = disasm_line__new(args);
1855                 if (dl)
1856                         annotation_line__add(&dl->al, &notes->src->source);
1857
1858                 pc += count;
1859         } while (count > 0 && pc < len);
1860
1861         ret = 0;
1862 out:
1863         free(prog_linfo);
1864         btf__free(btf);
1865         fclose(s);
1866         bfd_close(bfdf);
1867         return ret;
1868 }
1869 #else // defined(HAVE_LIBBFD_SUPPORT) && defined(HAVE_LIBBPF_SUPPORT)
1870 static int symbol__disassemble_bpf(struct symbol *sym __maybe_unused,
1871                                    struct annotate_args *args __maybe_unused)
1872 {
1873         return SYMBOL_ANNOTATE_ERRNO__NO_LIBOPCODES_FOR_BPF;
1874 }
1875 #endif // defined(HAVE_LIBBFD_SUPPORT) && defined(HAVE_LIBBPF_SUPPORT)
1876
1877 static int
1878 symbol__disassemble_bpf_image(struct symbol *sym,
1879                               struct annotate_args *args)
1880 {
1881         struct annotation *notes = symbol__annotation(sym);
1882         struct disasm_line *dl;
1883
1884         args->offset = -1;
1885         args->line = strdup("to be implemented");
1886         args->line_nr = 0;
1887         args->fileloc = NULL;
1888         dl = disasm_line__new(args);
1889         if (dl)
1890                 annotation_line__add(&dl->al, &notes->src->source);
1891
1892         free(args->line);
1893         return 0;
1894 }
1895
1896 /*
1897  * Possibly create a new version of line with tabs expanded. Returns the
1898  * existing or new line, storage is updated if a new line is allocated. If
1899  * allocation fails then NULL is returned.
1900  */
1901 static char *expand_tabs(char *line, char **storage, size_t *storage_len)
1902 {
1903         size_t i, src, dst, len, new_storage_len, num_tabs;
1904         char *new_line;
1905         size_t line_len = strlen(line);
1906
1907         for (num_tabs = 0, i = 0; i < line_len; i++)
1908                 if (line[i] == '\t')
1909                         num_tabs++;
1910
1911         if (num_tabs == 0)
1912                 return line;
1913
1914         /*
1915          * Space for the line and '\0', less the leading and trailing
1916          * spaces. Each tab may introduce 7 additional spaces.
1917          */
1918         new_storage_len = line_len + 1 + (num_tabs * 7);
1919
1920         new_line = malloc(new_storage_len);
1921         if (new_line == NULL) {
1922                 pr_err("Failure allocating memory for tab expansion\n");
1923                 return NULL;
1924         }
1925
1926         /*
1927          * Copy regions starting at src and expand tabs. If there are two
1928          * adjacent tabs then 'src == i', the memcpy is of size 0 and the spaces
1929          * are inserted.
1930          */
1931         for (i = 0, src = 0, dst = 0; i < line_len && num_tabs; i++) {
1932                 if (line[i] == '\t') {
1933                         len = i - src;
1934                         memcpy(&new_line[dst], &line[src], len);
1935                         dst += len;
1936                         new_line[dst++] = ' ';
1937                         while (dst % 8 != 0)
1938                                 new_line[dst++] = ' ';
1939                         src = i + 1;
1940                         num_tabs--;
1941                 }
1942         }
1943
1944         /* Expand the last region. */
1945         len = line_len - src;
1946         memcpy(&new_line[dst], &line[src], len);
1947         dst += len;
1948         new_line[dst] = '\0';
1949
1950         free(*storage);
1951         *storage = new_line;
1952         *storage_len = new_storage_len;
1953         return new_line;
1954
1955 }
1956
1957 static int symbol__disassemble(struct symbol *sym, struct annotate_args *args)
1958 {
1959         struct annotation_options *opts = args->options;
1960         struct map *map = args->ms.map;
1961         struct dso *dso = map->dso;
1962         char *command;
1963         FILE *file;
1964         char symfs_filename[PATH_MAX];
1965         struct kcore_extract kce;
1966         bool delete_extract = false;
1967         bool decomp = false;
1968         int lineno = 0;
1969         char *fileloc = NULL;
1970         int nline;
1971         char *line;
1972         size_t line_len;
1973         const char *objdump_argv[] = {
1974                 "/bin/sh",
1975                 "-c",
1976                 NULL, /* Will be the objdump command to run. */
1977                 "--",
1978                 NULL, /* Will be the symfs path. */
1979                 NULL,
1980         };
1981         struct child_process objdump_process;
1982         int err = dso__disassemble_filename(dso, symfs_filename, sizeof(symfs_filename));
1983
1984         if (err)
1985                 return err;
1986
1987         pr_debug("%s: filename=%s, sym=%s, start=%#" PRIx64 ", end=%#" PRIx64 "\n", __func__,
1988                  symfs_filename, sym->name, map->unmap_ip(map, sym->start),
1989                  map->unmap_ip(map, sym->end));
1990
1991         pr_debug("annotating [%p] %30s : [%p] %30s\n",
1992                  dso, dso->long_name, sym, sym->name);
1993
1994         if (dso->binary_type == DSO_BINARY_TYPE__BPF_PROG_INFO) {
1995                 return symbol__disassemble_bpf(sym, args);
1996         } else if (dso->binary_type == DSO_BINARY_TYPE__BPF_IMAGE) {
1997                 return symbol__disassemble_bpf_image(sym, args);
1998         } else if (dso__is_kcore(dso)) {
1999                 kce.kcore_filename = symfs_filename;
2000                 kce.addr = map__rip_2objdump(map, sym->start);
2001                 kce.offs = sym->start;
2002                 kce.len = sym->end - sym->start;
2003                 if (!kcore_extract__create(&kce)) {
2004                         delete_extract = true;
2005                         strlcpy(symfs_filename, kce.extract_filename,
2006                                 sizeof(symfs_filename));
2007                 }
2008         } else if (dso__needs_decompress(dso)) {
2009                 char tmp[KMOD_DECOMP_LEN];
2010
2011                 if (dso__decompress_kmodule_path(dso, symfs_filename,
2012                                                  tmp, sizeof(tmp)) < 0)
2013                         return -1;
2014
2015                 decomp = true;
2016                 strcpy(symfs_filename, tmp);
2017         }
2018
2019         err = asprintf(&command,
2020                  "%s %s%s --start-address=0x%016" PRIx64
2021                  " --stop-address=0x%016" PRIx64
2022                  " -l -d %s %s %s %c%s%c %s%s -C \"$1\"",
2023                  opts->objdump_path ?: "objdump",
2024                  opts->disassembler_style ? "-M " : "",
2025                  opts->disassembler_style ?: "",
2026                  map__rip_2objdump(map, sym->start),
2027                  map__rip_2objdump(map, sym->end),
2028                  opts->show_asm_raw ? "" : "--no-show-raw-insn",
2029                  opts->annotate_src ? "-S" : "",
2030                  opts->prefix ? "--prefix " : "",
2031                  opts->prefix ? '"' : ' ',
2032                  opts->prefix ?: "",
2033                  opts->prefix ? '"' : ' ',
2034                  opts->prefix_strip ? "--prefix-strip=" : "",
2035                  opts->prefix_strip ?: "");
2036
2037         if (err < 0) {
2038                 pr_err("Failure allocating memory for the command to run\n");
2039                 goto out_remove_tmp;
2040         }
2041
2042         pr_debug("Executing: %s\n", command);
2043
2044         objdump_argv[2] = command;
2045         objdump_argv[4] = symfs_filename;
2046
2047         /* Create a pipe to read from for stdout */
2048         memset(&objdump_process, 0, sizeof(objdump_process));
2049         objdump_process.argv = objdump_argv;
2050         objdump_process.out = -1;
2051         objdump_process.err = -1;
2052         objdump_process.no_stderr = 1;
2053         if (start_command(&objdump_process)) {
2054                 pr_err("Failure starting to run %s\n", command);
2055                 err = -1;
2056                 goto out_free_command;
2057         }
2058
2059         file = fdopen(objdump_process.out, "r");
2060         if (!file) {
2061                 pr_err("Failure creating FILE stream for %s\n", command);
2062                 /*
2063                  * If we were using debug info should retry with
2064                  * original binary.
2065                  */
2066                 err = -1;
2067                 goto out_close_stdout;
2068         }
2069
2070         /* Storage for getline. */
2071         line = NULL;
2072         line_len = 0;
2073
2074         nline = 0;
2075         while (!feof(file)) {
2076                 const char *match;
2077                 char *expanded_line;
2078
2079                 if (getline(&line, &line_len, file) < 0 || !line)
2080                         break;
2081
2082                 /* Skip lines containing "filename:" */
2083                 match = strstr(line, symfs_filename);
2084                 if (match && match[strlen(symfs_filename)] == ':')
2085                         continue;
2086
2087                 expanded_line = strim(line);
2088                 expanded_line = expand_tabs(expanded_line, &line, &line_len);
2089                 if (!expanded_line)
2090                         break;
2091
2092                 /*
2093                  * The source code line number (lineno) needs to be kept in
2094                  * across calls to symbol__parse_objdump_line(), so that it
2095                  * can associate it with the instructions till the next one.
2096                  * See disasm_line__new() and struct disasm_line::line_nr.
2097                  */
2098                 if (symbol__parse_objdump_line(sym, args, expanded_line,
2099                                                &lineno, &fileloc) < 0)
2100                         break;
2101                 nline++;
2102         }
2103         free(line);
2104
2105         err = finish_command(&objdump_process);
2106         if (err)
2107                 pr_err("Error running %s\n", command);
2108
2109         if (nline == 0) {
2110                 err = -1;
2111                 pr_err("No output from %s\n", command);
2112         }
2113
2114         /*
2115          * kallsyms does not have symbol sizes so there may a nop at the end.
2116          * Remove it.
2117          */
2118         if (dso__is_kcore(dso))
2119                 delete_last_nop(sym);
2120
2121         fclose(file);
2122
2123 out_close_stdout:
2124         close(objdump_process.out);
2125
2126 out_free_command:
2127         free(command);
2128
2129 out_remove_tmp:
2130         if (decomp)
2131                 unlink(symfs_filename);
2132
2133         if (delete_extract)
2134                 kcore_extract__delete(&kce);
2135
2136         return err;
2137 }
2138
2139 static void calc_percent(struct sym_hist *sym_hist,
2140                          struct hists *hists,
2141                          struct annotation_data *data,
2142                          s64 offset, s64 end)
2143 {
2144         unsigned int hits = 0;
2145         u64 period = 0;
2146
2147         while (offset < end) {
2148                 hits   += sym_hist->addr[offset].nr_samples;
2149                 period += sym_hist->addr[offset].period;
2150                 ++offset;
2151         }
2152
2153         if (sym_hist->nr_samples) {
2154                 data->he.period     = period;
2155                 data->he.nr_samples = hits;
2156                 data->percent[PERCENT_HITS_LOCAL] = 100.0 * hits / sym_hist->nr_samples;
2157         }
2158
2159         if (hists->stats.nr_non_filtered_samples)
2160                 data->percent[PERCENT_HITS_GLOBAL] = 100.0 * hits / hists->stats.nr_non_filtered_samples;
2161
2162         if (sym_hist->period)
2163                 data->percent[PERCENT_PERIOD_LOCAL] = 100.0 * period / sym_hist->period;
2164
2165         if (hists->stats.total_period)
2166                 data->percent[PERCENT_PERIOD_GLOBAL] = 100.0 * period / hists->stats.total_period;
2167 }
2168
2169 static void annotation__calc_percent(struct annotation *notes,
2170                                      struct evsel *leader, s64 len)
2171 {
2172         struct annotation_line *al, *next;
2173         struct evsel *evsel;
2174
2175         list_for_each_entry(al, &notes->src->source, node) {
2176                 s64 end;
2177                 int i = 0;
2178
2179                 if (al->offset == -1)
2180                         continue;
2181
2182                 next = annotation_line__next(al, &notes->src->source);
2183                 end  = next ? next->offset : len;
2184
2185                 for_each_group_evsel(evsel, leader) {
2186                         struct hists *hists = evsel__hists(evsel);
2187                         struct annotation_data *data;
2188                         struct sym_hist *sym_hist;
2189
2190                         BUG_ON(i >= al->data_nr);
2191
2192                         sym_hist = annotation__histogram(notes, evsel->core.idx);
2193                         data = &al->data[i++];
2194
2195                         calc_percent(sym_hist, hists, data, al->offset, end);
2196                 }
2197         }
2198 }
2199
2200 void symbol__calc_percent(struct symbol *sym, struct evsel *evsel)
2201 {
2202         struct annotation *notes = symbol__annotation(sym);
2203
2204         annotation__calc_percent(notes, evsel, symbol__size(sym));
2205 }
2206
2207 int symbol__annotate(struct map_symbol *ms, struct evsel *evsel,
2208                      struct annotation_options *options, struct arch **parch)
2209 {
2210         struct symbol *sym = ms->sym;
2211         struct annotation *notes = symbol__annotation(sym);
2212         struct annotate_args args = {
2213                 .evsel          = evsel,
2214                 .options        = options,
2215         };
2216         struct perf_env *env = evsel__env(evsel);
2217         const char *arch_name = perf_env__arch(env);
2218         struct arch *arch;
2219         int err;
2220
2221         if (!arch_name)
2222                 return errno;
2223
2224         args.arch = arch = arch__find(arch_name);
2225         if (arch == NULL) {
2226                 pr_err("%s: unsupported arch %s\n", __func__, arch_name);
2227                 return ENOTSUP;
2228         }
2229
2230         if (parch)
2231                 *parch = arch;
2232
2233         if (arch->init) {
2234                 err = arch->init(arch, env ? env->cpuid : NULL);
2235                 if (err) {
2236                         pr_err("%s: failed to initialize %s arch priv area\n", __func__, arch->name);
2237                         return err;
2238                 }
2239         }
2240
2241         args.ms = *ms;
2242         if (notes->options && notes->options->full_addr)
2243                 notes->start = map__objdump_2mem(ms->map, ms->sym->start);
2244         else
2245                 notes->start = map__rip_2objdump(ms->map, ms->sym->start);
2246
2247         return symbol__disassemble(sym, &args);
2248 }
2249
2250 static void insert_source_line(struct rb_root *root, struct annotation_line *al,
2251                                struct annotation_options *opts)
2252 {
2253         struct annotation_line *iter;
2254         struct rb_node **p = &root->rb_node;
2255         struct rb_node *parent = NULL;
2256         int i, ret;
2257
2258         while (*p != NULL) {
2259                 parent = *p;
2260                 iter = rb_entry(parent, struct annotation_line, rb_node);
2261
2262                 ret = strcmp(iter->path, al->path);
2263                 if (ret == 0) {
2264                         for (i = 0; i < al->data_nr; i++) {
2265                                 iter->data[i].percent_sum += annotation_data__percent(&al->data[i],
2266                                                                                       opts->percent_type);
2267                         }
2268                         return;
2269                 }
2270
2271                 if (ret < 0)
2272                         p = &(*p)->rb_left;
2273                 else
2274                         p = &(*p)->rb_right;
2275         }
2276
2277         for (i = 0; i < al->data_nr; i++) {
2278                 al->data[i].percent_sum = annotation_data__percent(&al->data[i],
2279                                                                    opts->percent_type);
2280         }
2281
2282         rb_link_node(&al->rb_node, parent, p);
2283         rb_insert_color(&al->rb_node, root);
2284 }
2285
2286 static int cmp_source_line(struct annotation_line *a, struct annotation_line *b)
2287 {
2288         int i;
2289
2290         for (i = 0; i < a->data_nr; i++) {
2291                 if (a->data[i].percent_sum == b->data[i].percent_sum)
2292                         continue;
2293                 return a->data[i].percent_sum > b->data[i].percent_sum;
2294         }
2295
2296         return 0;
2297 }
2298
2299 static void __resort_source_line(struct rb_root *root, struct annotation_line *al)
2300 {
2301         struct annotation_line *iter;
2302         struct rb_node **p = &root->rb_node;
2303         struct rb_node *parent = NULL;
2304
2305         while (*p != NULL) {
2306                 parent = *p;
2307                 iter = rb_entry(parent, struct annotation_line, rb_node);
2308
2309                 if (cmp_source_line(al, iter))
2310                         p = &(*p)->rb_left;
2311                 else
2312                         p = &(*p)->rb_right;
2313         }
2314
2315         rb_link_node(&al->rb_node, parent, p);
2316         rb_insert_color(&al->rb_node, root);
2317 }
2318
2319 static void resort_source_line(struct rb_root *dest_root, struct rb_root *src_root)
2320 {
2321         struct annotation_line *al;
2322         struct rb_node *node;
2323
2324         node = rb_first(src_root);
2325         while (node) {
2326                 struct rb_node *next;
2327
2328                 al = rb_entry(node, struct annotation_line, rb_node);
2329                 next = rb_next(node);
2330                 rb_erase(node, src_root);
2331
2332                 __resort_source_line(dest_root, al);
2333                 node = next;
2334         }
2335 }
2336
2337 static void print_summary(struct rb_root *root, const char *filename)
2338 {
2339         struct annotation_line *al;
2340         struct rb_node *node;
2341
2342         printf("\nSorted summary for file %s\n", filename);
2343         printf("----------------------------------------------\n\n");
2344
2345         if (RB_EMPTY_ROOT(root)) {
2346                 printf(" Nothing higher than %1.1f%%\n", MIN_GREEN);
2347                 return;
2348         }
2349
2350         node = rb_first(root);
2351         while (node) {
2352                 double percent, percent_max = 0.0;
2353                 const char *color;
2354                 char *path;
2355                 int i;
2356
2357                 al = rb_entry(node, struct annotation_line, rb_node);
2358                 for (i = 0; i < al->data_nr; i++) {
2359                         percent = al->data[i].percent_sum;
2360                         color = get_percent_color(percent);
2361                         color_fprintf(stdout, color, " %7.2f", percent);
2362
2363                         if (percent > percent_max)
2364                                 percent_max = percent;
2365                 }
2366
2367                 path = al->path;
2368                 color = get_percent_color(percent_max);
2369                 color_fprintf(stdout, color, " %s\n", path);
2370
2371                 node = rb_next(node);
2372         }
2373 }
2374
2375 static void symbol__annotate_hits(struct symbol *sym, struct evsel *evsel)
2376 {
2377         struct annotation *notes = symbol__annotation(sym);
2378         struct sym_hist *h = annotation__histogram(notes, evsel->core.idx);
2379         u64 len = symbol__size(sym), offset;
2380
2381         for (offset = 0; offset < len; ++offset)
2382                 if (h->addr[offset].nr_samples != 0)
2383                         printf("%*" PRIx64 ": %" PRIu64 "\n", BITS_PER_LONG / 2,
2384                                sym->start + offset, h->addr[offset].nr_samples);
2385         printf("%*s: %" PRIu64 "\n", BITS_PER_LONG / 2, "h->nr_samples", h->nr_samples);
2386 }
2387
2388 static int annotated_source__addr_fmt_width(struct list_head *lines, u64 start)
2389 {
2390         char bf[32];
2391         struct annotation_line *line;
2392
2393         list_for_each_entry_reverse(line, lines, node) {
2394                 if (line->offset != -1)
2395                         return scnprintf(bf, sizeof(bf), "%" PRIx64, start + line->offset);
2396         }
2397
2398         return 0;
2399 }
2400
2401 int symbol__annotate_printf(struct map_symbol *ms, struct evsel *evsel,
2402                             struct annotation_options *opts)
2403 {
2404         struct map *map = ms->map;
2405         struct symbol *sym = ms->sym;
2406         struct dso *dso = map->dso;
2407         char *filename;
2408         const char *d_filename;
2409         const char *evsel_name = evsel__name(evsel);
2410         struct annotation *notes = symbol__annotation(sym);
2411         struct sym_hist *h = annotation__histogram(notes, evsel->core.idx);
2412         struct annotation_line *pos, *queue = NULL;
2413         u64 start = map__rip_2objdump(map, sym->start);
2414         int printed = 2, queue_len = 0, addr_fmt_width;
2415         int more = 0;
2416         bool context = opts->context;
2417         u64 len;
2418         int width = symbol_conf.show_total_period ? 12 : 8;
2419         int graph_dotted_len;
2420         char buf[512];
2421
2422         filename = strdup(dso->long_name);
2423         if (!filename)
2424                 return -ENOMEM;
2425
2426         if (opts->full_path)
2427                 d_filename = filename;
2428         else
2429                 d_filename = basename(filename);
2430
2431         len = symbol__size(sym);
2432
2433         if (evsel__is_group_event(evsel)) {
2434                 width *= evsel->core.nr_members;
2435                 evsel__group_desc(evsel, buf, sizeof(buf));
2436                 evsel_name = buf;
2437         }
2438
2439         graph_dotted_len = printf(" %-*.*s|     Source code & Disassembly of %s for %s (%" PRIu64 " samples, "
2440                                   "percent: %s)\n",
2441                                   width, width, symbol_conf.show_total_period ? "Period" :
2442                                   symbol_conf.show_nr_samples ? "Samples" : "Percent",
2443                                   d_filename, evsel_name, h->nr_samples,
2444                                   percent_type_str(opts->percent_type));
2445
2446         printf("%-*.*s----\n",
2447                graph_dotted_len, graph_dotted_len, graph_dotted_line);
2448
2449         if (verbose > 0)
2450                 symbol__annotate_hits(sym, evsel);
2451
2452         addr_fmt_width = annotated_source__addr_fmt_width(&notes->src->source, start);
2453
2454         list_for_each_entry(pos, &notes->src->source, node) {
2455                 int err;
2456
2457                 if (context && queue == NULL) {
2458                         queue = pos;
2459                         queue_len = 0;
2460                 }
2461
2462                 err = annotation_line__print(pos, sym, start, evsel, len,
2463                                              opts->min_pcnt, printed, opts->max_lines,
2464                                              queue, addr_fmt_width, opts->percent_type);
2465
2466                 switch (err) {
2467                 case 0:
2468                         ++printed;
2469                         if (context) {
2470                                 printed += queue_len;
2471                                 queue = NULL;
2472                                 queue_len = 0;
2473                         }
2474                         break;
2475                 case 1:
2476                         /* filtered by max_lines */
2477                         ++more;
2478                         break;
2479                 case -1:
2480                 default:
2481                         /*
2482                          * Filtered by min_pcnt or non IP lines when
2483                          * context != 0
2484                          */
2485                         if (!context)
2486                                 break;
2487                         if (queue_len == context)
2488                                 queue = list_entry(queue->node.next, typeof(*queue), node);
2489                         else
2490                                 ++queue_len;
2491                         break;
2492                 }
2493         }
2494
2495         free(filename);
2496
2497         return more;
2498 }
2499
2500 static void FILE__set_percent_color(void *fp __maybe_unused,
2501                                     double percent __maybe_unused,
2502                                     bool current __maybe_unused)
2503 {
2504 }
2505
2506 static int FILE__set_jumps_percent_color(void *fp __maybe_unused,
2507                                          int nr __maybe_unused, bool current __maybe_unused)
2508 {
2509         return 0;
2510 }
2511
2512 static int FILE__set_color(void *fp __maybe_unused, int color __maybe_unused)
2513 {
2514         return 0;
2515 }
2516
2517 static void FILE__printf(void *fp, const char *fmt, ...)
2518 {
2519         va_list args;
2520
2521         va_start(args, fmt);
2522         vfprintf(fp, fmt, args);
2523         va_end(args);
2524 }
2525
2526 static void FILE__write_graph(void *fp, int graph)
2527 {
2528         const char *s;
2529         switch (graph) {
2530
2531         case DARROW_CHAR: s = "↓"; break;
2532         case UARROW_CHAR: s = "↑"; break;
2533         case LARROW_CHAR: s = "←"; break;
2534         case RARROW_CHAR: s = "→"; break;
2535         default:                s = "?"; break;
2536         }
2537
2538         fputs(s, fp);
2539 }
2540
2541 static int symbol__annotate_fprintf2(struct symbol *sym, FILE *fp,
2542                                      struct annotation_options *opts)
2543 {
2544         struct annotation *notes = symbol__annotation(sym);
2545         struct annotation_write_ops wops = {
2546                 .first_line              = true,
2547                 .obj                     = fp,
2548                 .set_color               = FILE__set_color,
2549                 .set_percent_color       = FILE__set_percent_color,
2550                 .set_jumps_percent_color = FILE__set_jumps_percent_color,
2551                 .printf                  = FILE__printf,
2552                 .write_graph             = FILE__write_graph,
2553         };
2554         struct annotation_line *al;
2555
2556         list_for_each_entry(al, &notes->src->source, node) {
2557                 if (annotation_line__filter(al, notes))
2558                         continue;
2559                 annotation_line__write(al, notes, &wops, opts);
2560                 fputc('\n', fp);
2561                 wops.first_line = false;
2562         }
2563
2564         return 0;
2565 }
2566
2567 int map_symbol__annotation_dump(struct map_symbol *ms, struct evsel *evsel,
2568                                 struct annotation_options *opts)
2569 {
2570         const char *ev_name = evsel__name(evsel);
2571         char buf[1024];
2572         char *filename;
2573         int err = -1;
2574         FILE *fp;
2575
2576         if (asprintf(&filename, "%s.annotation", ms->sym->name) < 0)
2577                 return -1;
2578
2579         fp = fopen(filename, "w");
2580         if (fp == NULL)
2581                 goto out_free_filename;
2582
2583         if (evsel__is_group_event(evsel)) {
2584                 evsel__group_desc(evsel, buf, sizeof(buf));
2585                 ev_name = buf;
2586         }
2587
2588         fprintf(fp, "%s() %s\nEvent: %s\n\n",
2589                 ms->sym->name, ms->map->dso->long_name, ev_name);
2590         symbol__annotate_fprintf2(ms->sym, fp, opts);
2591
2592         fclose(fp);
2593         err = 0;
2594 out_free_filename:
2595         free(filename);
2596         return err;
2597 }
2598
2599 void symbol__annotate_zero_histogram(struct symbol *sym, int evidx)
2600 {
2601         struct annotation *notes = symbol__annotation(sym);
2602         struct sym_hist *h = annotation__histogram(notes, evidx);
2603
2604         memset(h, 0, notes->src->sizeof_sym_hist);
2605 }
2606
2607 void symbol__annotate_decay_histogram(struct symbol *sym, int evidx)
2608 {
2609         struct annotation *notes = symbol__annotation(sym);
2610         struct sym_hist *h = annotation__histogram(notes, evidx);
2611         int len = symbol__size(sym), offset;
2612
2613         h->nr_samples = 0;
2614         for (offset = 0; offset < len; ++offset) {
2615                 h->addr[offset].nr_samples = h->addr[offset].nr_samples * 7 / 8;
2616                 h->nr_samples += h->addr[offset].nr_samples;
2617         }
2618 }
2619
2620 void annotated_source__purge(struct annotated_source *as)
2621 {
2622         struct annotation_line *al, *n;
2623
2624         list_for_each_entry_safe(al, n, &as->source, node) {
2625                 list_del_init(&al->node);
2626                 disasm_line__free(disasm_line(al));
2627         }
2628 }
2629
2630 static size_t disasm_line__fprintf(struct disasm_line *dl, FILE *fp)
2631 {
2632         size_t printed;
2633
2634         if (dl->al.offset == -1)
2635                 return fprintf(fp, "%s\n", dl->al.line);
2636
2637         printed = fprintf(fp, "%#" PRIx64 " %s", dl->al.offset, dl->ins.name);
2638
2639         if (dl->ops.raw[0] != '\0') {
2640                 printed += fprintf(fp, "%.*s %s\n", 6 - (int)printed, " ",
2641                                    dl->ops.raw);
2642         }
2643
2644         return printed + fprintf(fp, "\n");
2645 }
2646
2647 size_t disasm__fprintf(struct list_head *head, FILE *fp)
2648 {
2649         struct disasm_line *pos;
2650         size_t printed = 0;
2651
2652         list_for_each_entry(pos, head, al.node)
2653                 printed += disasm_line__fprintf(pos, fp);
2654
2655         return printed;
2656 }
2657
2658 bool disasm_line__is_valid_local_jump(struct disasm_line *dl, struct symbol *sym)
2659 {
2660         if (!dl || !dl->ins.ops || !ins__is_jump(&dl->ins) ||
2661             !disasm_line__has_local_offset(dl) || dl->ops.target.offset < 0 ||
2662             dl->ops.target.offset >= (s64)symbol__size(sym))
2663                 return false;
2664
2665         return true;
2666 }
2667
2668 void annotation__mark_jump_targets(struct annotation *notes, struct symbol *sym)
2669 {
2670         u64 offset, size = symbol__size(sym);
2671
2672         /* PLT symbols contain external offsets */
2673         if (strstr(sym->name, "@plt"))
2674                 return;
2675
2676         for (offset = 0; offset < size; ++offset) {
2677                 struct annotation_line *al = notes->offsets[offset];
2678                 struct disasm_line *dl;
2679
2680                 dl = disasm_line(al);
2681
2682                 if (!disasm_line__is_valid_local_jump(dl, sym))
2683                         continue;
2684
2685                 al = notes->offsets[dl->ops.target.offset];
2686
2687                 /*
2688                  * FIXME: Oops, no jump target? Buggy disassembler? Or do we
2689                  * have to adjust to the previous offset?
2690                  */
2691                 if (al == NULL)
2692                         continue;
2693
2694                 if (++al->jump_sources > notes->max_jump_sources)
2695                         notes->max_jump_sources = al->jump_sources;
2696         }
2697 }
2698
2699 void annotation__set_offsets(struct annotation *notes, s64 size)
2700 {
2701         struct annotation_line *al;
2702
2703         notes->max_line_len = 0;
2704         notes->nr_entries = 0;
2705         notes->nr_asm_entries = 0;
2706
2707         list_for_each_entry(al, &notes->src->source, node) {
2708                 size_t line_len = strlen(al->line);
2709
2710                 if (notes->max_line_len < line_len)
2711                         notes->max_line_len = line_len;
2712                 al->idx = notes->nr_entries++;
2713                 if (al->offset != -1) {
2714                         al->idx_asm = notes->nr_asm_entries++;
2715                         /*
2716                          * FIXME: short term bandaid to cope with assembly
2717                          * routines that comes with labels in the same column
2718                          * as the address in objdump, sigh.
2719                          *
2720                          * E.g. copy_user_generic_unrolled
2721                          */
2722                         if (al->offset < size)
2723                                 notes->offsets[al->offset] = al;
2724                 } else
2725                         al->idx_asm = -1;
2726         }
2727 }
2728
2729 static inline int width_jumps(int n)
2730 {
2731         if (n >= 100)
2732                 return 5;
2733         if (n / 10)
2734                 return 2;
2735         return 1;
2736 }
2737
2738 static int annotation__max_ins_name(struct annotation *notes)
2739 {
2740         int max_name = 0, len;
2741         struct annotation_line *al;
2742
2743         list_for_each_entry(al, &notes->src->source, node) {
2744                 if (al->offset == -1)
2745                         continue;
2746
2747                 len = strlen(disasm_line(al)->ins.name);
2748                 if (max_name < len)
2749                         max_name = len;
2750         }
2751
2752         return max_name;
2753 }
2754
2755 void annotation__init_column_widths(struct annotation *notes, struct symbol *sym)
2756 {
2757         notes->widths.addr = notes->widths.target =
2758                 notes->widths.min_addr = hex_width(symbol__size(sym));
2759         notes->widths.max_addr = hex_width(sym->end);
2760         notes->widths.jumps = width_jumps(notes->max_jump_sources);
2761         notes->widths.max_ins_name = annotation__max_ins_name(notes);
2762 }
2763
2764 void annotation__update_column_widths(struct annotation *notes)
2765 {
2766         if (notes->options->use_offset)
2767                 notes->widths.target = notes->widths.min_addr;
2768         else if (notes->options->full_addr)
2769                 notes->widths.target = BITS_PER_LONG / 4;
2770         else
2771                 notes->widths.target = notes->widths.max_addr;
2772
2773         notes->widths.addr = notes->widths.target;
2774
2775         if (notes->options->show_nr_jumps)
2776                 notes->widths.addr += notes->widths.jumps + 1;
2777 }
2778
2779 void annotation__toggle_full_addr(struct annotation *notes, struct map_symbol *ms)
2780 {
2781         notes->options->full_addr = !notes->options->full_addr;
2782
2783         if (notes->options->full_addr)
2784                 notes->start = map__objdump_2mem(ms->map, ms->sym->start);
2785         else
2786                 notes->start = map__rip_2objdump(ms->map, ms->sym->start);
2787
2788         annotation__update_column_widths(notes);
2789 }
2790
2791 static void annotation__calc_lines(struct annotation *notes, struct map *map,
2792                                    struct rb_root *root,
2793                                    struct annotation_options *opts)
2794 {
2795         struct annotation_line *al;
2796         struct rb_root tmp_root = RB_ROOT;
2797
2798         list_for_each_entry(al, &notes->src->source, node) {
2799                 double percent_max = 0.0;
2800                 int i;
2801
2802                 for (i = 0; i < al->data_nr; i++) {
2803                         double percent;
2804
2805                         percent = annotation_data__percent(&al->data[i],
2806                                                            opts->percent_type);
2807
2808                         if (percent > percent_max)
2809                                 percent_max = percent;
2810                 }
2811
2812                 if (percent_max <= 0.5)
2813                         continue;
2814
2815                 al->path = get_srcline(map->dso, notes->start + al->offset, NULL,
2816                                        false, true, notes->start + al->offset);
2817                 insert_source_line(&tmp_root, al, opts);
2818         }
2819
2820         resort_source_line(root, &tmp_root);
2821 }
2822
2823 static void symbol__calc_lines(struct map_symbol *ms, struct rb_root *root,
2824                                struct annotation_options *opts)
2825 {
2826         struct annotation *notes = symbol__annotation(ms->sym);
2827
2828         annotation__calc_lines(notes, ms->map, root, opts);
2829 }
2830
2831 int symbol__tty_annotate2(struct map_symbol *ms, struct evsel *evsel,
2832                           struct annotation_options *opts)
2833 {
2834         struct dso *dso = ms->map->dso;
2835         struct symbol *sym = ms->sym;
2836         struct rb_root source_line = RB_ROOT;
2837         struct hists *hists = evsel__hists(evsel);
2838         char buf[1024];
2839         int err;
2840
2841         err = symbol__annotate2(ms, evsel, opts, NULL);
2842         if (err) {
2843                 char msg[BUFSIZ];
2844
2845                 dso->annotate_warned = true;
2846                 symbol__strerror_disassemble(ms, err, msg, sizeof(msg));
2847                 ui__error("Couldn't annotate %s:\n%s", sym->name, msg);
2848                 return -1;
2849         }
2850
2851         if (opts->print_lines) {
2852                 srcline_full_filename = opts->full_path;
2853                 symbol__calc_lines(ms, &source_line, opts);
2854                 print_summary(&source_line, dso->long_name);
2855         }
2856
2857         hists__scnprintf_title(hists, buf, sizeof(buf));
2858         fprintf(stdout, "%s, [percent: %s]\n%s() %s\n",
2859                 buf, percent_type_str(opts->percent_type), sym->name, dso->long_name);
2860         symbol__annotate_fprintf2(sym, stdout, opts);
2861
2862         annotated_source__purge(symbol__annotation(sym)->src);
2863
2864         return 0;
2865 }
2866
2867 int symbol__tty_annotate(struct map_symbol *ms, struct evsel *evsel,
2868                          struct annotation_options *opts)
2869 {
2870         struct dso *dso = ms->map->dso;
2871         struct symbol *sym = ms->sym;
2872         struct rb_root source_line = RB_ROOT;
2873         int err;
2874
2875         err = symbol__annotate(ms, evsel, opts, NULL);
2876         if (err) {
2877                 char msg[BUFSIZ];
2878
2879                 dso->annotate_warned = true;
2880                 symbol__strerror_disassemble(ms, err, msg, sizeof(msg));
2881                 ui__error("Couldn't annotate %s:\n%s", sym->name, msg);
2882                 return -1;
2883         }
2884
2885         symbol__calc_percent(sym, evsel);
2886
2887         if (opts->print_lines) {
2888                 srcline_full_filename = opts->full_path;
2889                 symbol__calc_lines(ms, &source_line, opts);
2890                 print_summary(&source_line, dso->long_name);
2891         }
2892
2893         symbol__annotate_printf(ms, evsel, opts);
2894
2895         annotated_source__purge(symbol__annotation(sym)->src);
2896
2897         return 0;
2898 }
2899
2900 bool ui__has_annotation(void)
2901 {
2902         return use_browser == 1 && perf_hpp_list.sym;
2903 }
2904
2905
2906 static double annotation_line__max_percent(struct annotation_line *al,
2907                                            struct annotation *notes,
2908                                            unsigned int percent_type)
2909 {
2910         double percent_max = 0.0;
2911         int i;
2912
2913         for (i = 0; i < notes->nr_events; i++) {
2914                 double percent;
2915
2916                 percent = annotation_data__percent(&al->data[i],
2917                                                    percent_type);
2918
2919                 if (percent > percent_max)
2920                         percent_max = percent;
2921         }
2922
2923         return percent_max;
2924 }
2925
2926 static void disasm_line__write(struct disasm_line *dl, struct annotation *notes,
2927                                void *obj, char *bf, size_t size,
2928                                void (*obj__printf)(void *obj, const char *fmt, ...),
2929                                void (*obj__write_graph)(void *obj, int graph))
2930 {
2931         if (dl->ins.ops && dl->ins.ops->scnprintf) {
2932                 if (ins__is_jump(&dl->ins)) {
2933                         bool fwd;
2934
2935                         if (dl->ops.target.outside)
2936                                 goto call_like;
2937                         fwd = dl->ops.target.offset > dl->al.offset;
2938                         obj__write_graph(obj, fwd ? DARROW_CHAR : UARROW_CHAR);
2939                         obj__printf(obj, " ");
2940                 } else if (ins__is_call(&dl->ins)) {
2941 call_like:
2942                         obj__write_graph(obj, RARROW_CHAR);
2943                         obj__printf(obj, " ");
2944                 } else if (ins__is_ret(&dl->ins)) {
2945                         obj__write_graph(obj, LARROW_CHAR);
2946                         obj__printf(obj, " ");
2947                 } else {
2948                         obj__printf(obj, "  ");
2949                 }
2950         } else {
2951                 obj__printf(obj, "  ");
2952         }
2953
2954         disasm_line__scnprintf(dl, bf, size, !notes->options->use_offset, notes->widths.max_ins_name);
2955 }
2956
2957 static void ipc_coverage_string(char *bf, int size, struct annotation *notes)
2958 {
2959         double ipc = 0.0, coverage = 0.0;
2960
2961         if (notes->hit_cycles)
2962                 ipc = notes->hit_insn / ((double)notes->hit_cycles);
2963
2964         if (notes->total_insn) {
2965                 coverage = notes->cover_insn * 100.0 /
2966                         ((double)notes->total_insn);
2967         }
2968
2969         scnprintf(bf, size, "(Average IPC: %.2f, IPC Coverage: %.1f%%)",
2970                   ipc, coverage);
2971 }
2972
2973 static void __annotation_line__write(struct annotation_line *al, struct annotation *notes,
2974                                      bool first_line, bool current_entry, bool change_color, int width,
2975                                      void *obj, unsigned int percent_type,
2976                                      int  (*obj__set_color)(void *obj, int color),
2977                                      void (*obj__set_percent_color)(void *obj, double percent, bool current),
2978                                      int  (*obj__set_jumps_percent_color)(void *obj, int nr, bool current),
2979                                      void (*obj__printf)(void *obj, const char *fmt, ...),
2980                                      void (*obj__write_graph)(void *obj, int graph))
2981
2982 {
2983         double percent_max = annotation_line__max_percent(al, notes, percent_type);
2984         int pcnt_width = annotation__pcnt_width(notes),
2985             cycles_width = annotation__cycles_width(notes);
2986         bool show_title = false;
2987         char bf[256];
2988         int printed;
2989
2990         if (first_line && (al->offset == -1 || percent_max == 0.0)) {
2991                 if (notes->have_cycles) {
2992                         if (al->ipc == 0.0 && al->cycles == 0)
2993                                 show_title = true;
2994                 } else
2995                         show_title = true;
2996         }
2997
2998         if (al->offset != -1 && percent_max != 0.0) {
2999                 int i;
3000
3001                 for (i = 0; i < notes->nr_events; i++) {
3002                         double percent;
3003
3004                         percent = annotation_data__percent(&al->data[i], percent_type);
3005
3006                         obj__set_percent_color(obj, percent, current_entry);
3007                         if (symbol_conf.show_total_period) {
3008                                 obj__printf(obj, "%11" PRIu64 " ", al->data[i].he.period);
3009                         } else if (symbol_conf.show_nr_samples) {
3010                                 obj__printf(obj, "%6" PRIu64 " ",
3011                                                    al->data[i].he.nr_samples);
3012                         } else {
3013                                 obj__printf(obj, "%6.2f ", percent);
3014                         }
3015                 }
3016         } else {
3017                 obj__set_percent_color(obj, 0, current_entry);
3018
3019                 if (!show_title)
3020                         obj__printf(obj, "%-*s", pcnt_width, " ");
3021                 else {
3022                         obj__printf(obj, "%-*s", pcnt_width,
3023                                            symbol_conf.show_total_period ? "Period" :
3024                                            symbol_conf.show_nr_samples ? "Samples" : "Percent");
3025                 }
3026         }
3027
3028         if (notes->have_cycles) {
3029                 if (al->ipc)
3030                         obj__printf(obj, "%*.2f ", ANNOTATION__IPC_WIDTH - 1, al->ipc);
3031                 else if (!show_title)
3032                         obj__printf(obj, "%*s", ANNOTATION__IPC_WIDTH, " ");
3033                 else
3034                         obj__printf(obj, "%*s ", ANNOTATION__IPC_WIDTH - 1, "IPC");
3035
3036                 if (!notes->options->show_minmax_cycle) {
3037                         if (al->cycles)
3038                                 obj__printf(obj, "%*" PRIu64 " ",
3039                                            ANNOTATION__CYCLES_WIDTH - 1, al->cycles);
3040                         else if (!show_title)
3041                                 obj__printf(obj, "%*s",
3042                                             ANNOTATION__CYCLES_WIDTH, " ");
3043                         else
3044                                 obj__printf(obj, "%*s ",
3045                                             ANNOTATION__CYCLES_WIDTH - 1,
3046                                             "Cycle");
3047                 } else {
3048                         if (al->cycles) {
3049                                 char str[32];
3050
3051                                 scnprintf(str, sizeof(str),
3052                                         "%" PRIu64 "(%" PRIu64 "/%" PRIu64 ")",
3053                                         al->cycles, al->cycles_min,
3054                                         al->cycles_max);
3055
3056                                 obj__printf(obj, "%*s ",
3057                                             ANNOTATION__MINMAX_CYCLES_WIDTH - 1,
3058                                             str);
3059                         } else if (!show_title)
3060                                 obj__printf(obj, "%*s",
3061                                             ANNOTATION__MINMAX_CYCLES_WIDTH,
3062                                             " ");
3063                         else
3064                                 obj__printf(obj, "%*s ",
3065                                             ANNOTATION__MINMAX_CYCLES_WIDTH - 1,
3066                                             "Cycle(min/max)");
3067                 }
3068
3069                 if (show_title && !*al->line) {
3070                         ipc_coverage_string(bf, sizeof(bf), notes);
3071                         obj__printf(obj, "%*s", ANNOTATION__AVG_IPC_WIDTH, bf);
3072                 }
3073         }
3074
3075         obj__printf(obj, " ");
3076
3077         if (!*al->line)
3078                 obj__printf(obj, "%-*s", width - pcnt_width - cycles_width, " ");
3079         else if (al->offset == -1) {
3080                 if (al->line_nr && notes->options->show_linenr)
3081                         printed = scnprintf(bf, sizeof(bf), "%-*d ", notes->widths.addr + 1, al->line_nr);
3082                 else
3083                         printed = scnprintf(bf, sizeof(bf), "%-*s  ", notes->widths.addr, " ");
3084                 obj__printf(obj, bf);
3085                 obj__printf(obj, "%-*s", width - printed - pcnt_width - cycles_width + 1, al->line);
3086         } else {
3087                 u64 addr = al->offset;
3088                 int color = -1;
3089
3090                 if (!notes->options->use_offset)
3091                         addr += notes->start;
3092
3093                 if (!notes->options->use_offset) {
3094                         printed = scnprintf(bf, sizeof(bf), "%" PRIx64 ": ", addr);
3095                 } else {
3096                         if (al->jump_sources &&
3097                             notes->options->offset_level >= ANNOTATION__OFFSET_JUMP_TARGETS) {
3098                                 if (notes->options->show_nr_jumps) {
3099                                         int prev;
3100                                         printed = scnprintf(bf, sizeof(bf), "%*d ",
3101                                                             notes->widths.jumps,
3102                                                             al->jump_sources);
3103                                         prev = obj__set_jumps_percent_color(obj, al->jump_sources,
3104                                                                             current_entry);
3105                                         obj__printf(obj, bf);
3106                                         obj__set_color(obj, prev);
3107                                 }
3108 print_addr:
3109                                 printed = scnprintf(bf, sizeof(bf), "%*" PRIx64 ": ",
3110                                                     notes->widths.target, addr);
3111                         } else if (ins__is_call(&disasm_line(al)->ins) &&
3112                                    notes->options->offset_level >= ANNOTATION__OFFSET_CALL) {
3113                                 goto print_addr;
3114                         } else if (notes->options->offset_level == ANNOTATION__MAX_OFFSET_LEVEL) {
3115                                 goto print_addr;
3116                         } else {
3117                                 printed = scnprintf(bf, sizeof(bf), "%-*s  ",
3118                                                     notes->widths.addr, " ");
3119                         }
3120                 }
3121
3122                 if (change_color)
3123                         color = obj__set_color(obj, HE_COLORSET_ADDR);
3124                 obj__printf(obj, bf);
3125                 if (change_color)
3126                         obj__set_color(obj, color);
3127
3128                 disasm_line__write(disasm_line(al), notes, obj, bf, sizeof(bf), obj__printf, obj__write_graph);
3129
3130                 obj__printf(obj, "%-*s", width - pcnt_width - cycles_width - 3 - printed, bf);
3131         }
3132
3133 }
3134
3135 void annotation_line__write(struct annotation_line *al, struct annotation *notes,
3136                             struct annotation_write_ops *wops,
3137                             struct annotation_options *opts)
3138 {
3139         __annotation_line__write(al, notes, wops->first_line, wops->current_entry,
3140                                  wops->change_color, wops->width, wops->obj,
3141                                  opts->percent_type,
3142                                  wops->set_color, wops->set_percent_color,
3143                                  wops->set_jumps_percent_color, wops->printf,
3144                                  wops->write_graph);
3145 }
3146
3147 int symbol__annotate2(struct map_symbol *ms, struct evsel *evsel,
3148                       struct annotation_options *options, struct arch **parch)
3149 {
3150         struct symbol *sym = ms->sym;
3151         struct annotation *notes = symbol__annotation(sym);
3152         size_t size = symbol__size(sym);
3153         int nr_pcnt = 1, err;
3154
3155         notes->offsets = zalloc(size * sizeof(struct annotation_line *));
3156         if (notes->offsets == NULL)
3157                 return ENOMEM;
3158
3159         if (evsel__is_group_event(evsel))
3160                 nr_pcnt = evsel->core.nr_members;
3161
3162         err = symbol__annotate(ms, evsel, options, parch);
3163         if (err)
3164                 goto out_free_offsets;
3165
3166         notes->options = options;
3167
3168         symbol__calc_percent(sym, evsel);
3169
3170         annotation__set_offsets(notes, size);
3171         annotation__mark_jump_targets(notes, sym);
3172         annotation__compute_ipc(notes, size);
3173         annotation__init_column_widths(notes, sym);
3174         notes->nr_events = nr_pcnt;
3175
3176         annotation__update_column_widths(notes);
3177         sym->annotate2 = 1;
3178
3179         return 0;
3180
3181 out_free_offsets:
3182         zfree(&notes->offsets);
3183         return err;
3184 }
3185
3186 static int annotation__config(const char *var, const char *value, void *data)
3187 {
3188         struct annotation_options *opt = data;
3189
3190         if (!strstarts(var, "annotate."))
3191                 return 0;
3192
3193         if (!strcmp(var, "annotate.offset_level")) {
3194                 perf_config_u8(&opt->offset_level, "offset_level", value);
3195
3196                 if (opt->offset_level > ANNOTATION__MAX_OFFSET_LEVEL)
3197                         opt->offset_level = ANNOTATION__MAX_OFFSET_LEVEL;
3198                 else if (opt->offset_level < ANNOTATION__MIN_OFFSET_LEVEL)
3199                         opt->offset_level = ANNOTATION__MIN_OFFSET_LEVEL;
3200         } else if (!strcmp(var, "annotate.hide_src_code")) {
3201                 opt->hide_src_code = perf_config_bool("hide_src_code", value);
3202         } else if (!strcmp(var, "annotate.jump_arrows")) {
3203                 opt->jump_arrows = perf_config_bool("jump_arrows", value);
3204         } else if (!strcmp(var, "annotate.show_linenr")) {
3205                 opt->show_linenr = perf_config_bool("show_linenr", value);
3206         } else if (!strcmp(var, "annotate.show_nr_jumps")) {
3207                 opt->show_nr_jumps = perf_config_bool("show_nr_jumps", value);
3208         } else if (!strcmp(var, "annotate.show_nr_samples")) {
3209                 symbol_conf.show_nr_samples = perf_config_bool("show_nr_samples",
3210                                                                 value);
3211         } else if (!strcmp(var, "annotate.show_total_period")) {
3212                 symbol_conf.show_total_period = perf_config_bool("show_total_period",
3213                                                                 value);
3214         } else if (!strcmp(var, "annotate.use_offset")) {
3215                 opt->use_offset = perf_config_bool("use_offset", value);
3216         } else if (!strcmp(var, "annotate.disassembler_style")) {
3217                 opt->disassembler_style = value;
3218         } else if (!strcmp(var, "annotate.demangle")) {
3219                 symbol_conf.demangle = perf_config_bool("demangle", value);
3220         } else if (!strcmp(var, "annotate.demangle_kernel")) {
3221                 symbol_conf.demangle_kernel = perf_config_bool("demangle_kernel", value);
3222         } else {
3223                 pr_debug("%s variable unknown, ignoring...", var);
3224         }
3225
3226         return 0;
3227 }
3228
3229 void annotation_config__init(struct annotation_options *opt)
3230 {
3231         perf_config(annotation__config, opt);
3232 }
3233
3234 static unsigned int parse_percent_type(char *str1, char *str2)
3235 {
3236         unsigned int type = (unsigned int) -1;
3237
3238         if (!strcmp("period", str1)) {
3239                 if (!strcmp("local", str2))
3240                         type = PERCENT_PERIOD_LOCAL;
3241                 else if (!strcmp("global", str2))
3242                         type = PERCENT_PERIOD_GLOBAL;
3243         }
3244
3245         if (!strcmp("hits", str1)) {
3246                 if (!strcmp("local", str2))
3247                         type = PERCENT_HITS_LOCAL;
3248                 else if (!strcmp("global", str2))
3249                         type = PERCENT_HITS_GLOBAL;
3250         }
3251
3252         return type;
3253 }
3254
3255 int annotate_parse_percent_type(const struct option *opt, const char *_str,
3256                                 int unset __maybe_unused)
3257 {
3258         struct annotation_options *opts = opt->value;
3259         unsigned int type;
3260         char *str1, *str2;
3261         int err = -1;
3262
3263         str1 = strdup(_str);
3264         if (!str1)
3265                 return -ENOMEM;
3266
3267         str2 = strchr(str1, '-');
3268         if (!str2)
3269                 goto out;
3270
3271         *str2++ = 0;
3272
3273         type = parse_percent_type(str1, str2);
3274         if (type == (unsigned int) -1)
3275                 type = parse_percent_type(str2, str1);
3276         if (type != (unsigned int) -1) {
3277                 opts->percent_type = type;
3278                 err = 0;
3279         }
3280
3281 out:
3282         free(str1);
3283         return err;
3284 }
3285
3286 int annotate_check_args(struct annotation_options *args)
3287 {
3288         if (args->prefix_strip && !args->prefix) {
3289                 pr_err("--prefix-strip requires --prefix\n");
3290                 return -1;
3291         }
3292         return 0;
3293 }