SAFE public projects git trees. - safe/jmp/linux-2.6/blob - tools/perf/util/trace-event-parse.c

   1 /*
   2  * Copyright (C) 2009, Steven Rostedt <srostedt@redhat.com>
   3  *
   4  * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; version 2 of the License (not later!)
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License
  16  * along with this program; if not, write to the Free Software
  17  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  18  *
  19  * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  20  *
  21  *  The parts for function graph printing was taken and modified from the
  22  *  Linux Kernel that were written by Frederic Weisbecker.
  23  */
  24 #define _GNU_SOURCE
  25 #include <stdio.h>
  26 #include <stdlib.h>
  27 #include <string.h>
  28 #include <ctype.h>
  29 #include <errno.h>
  30
  31 #undef _GNU_SOURCE
  32 #include "../perf.h"
  33 #include "util.h"
  34 #include "trace-event.h"
  35
  36 int header_page_ts_offset;
  37 int header_page_ts_size;
  38 int header_page_size_offset;
  39 int header_page_size_size;
  40 int header_page_data_offset;
  41 int header_page_data_size;
  42
  43 int latency_format;
  44
  45 static char *input_buf;
  46 static unsigned long long input_buf_ptr;
  47 static unsigned long long input_buf_siz;
  48
  49 static int cpus;
  50 static int long_size;
  51 static int is_flag_field;
  52 static int is_symbolic_field;
  53
  54 static struct format_field *
  55 find_any_field(struct event *event, const char *name);
  56
  57 static void init_input_buf(char *buf, unsigned long long size)
  58 {
  59         input_buf = buf;
  60         input_buf_siz = size;
  61         input_buf_ptr = 0;
  62 }
  63
  64 struct cmdline {
  65         char *comm;
  66         int pid;
  67 };
  68
  69 static struct cmdline *cmdlines;
  70 static int cmdline_count;
  71
  72 static int cmdline_cmp(const void *a, const void *b)
  73 {
  74         const struct cmdline *ca = a;
  75         const struct cmdline *cb = b;
  76
  77         if (ca->pid < cb->pid)
  78                 return -1;
  79         if (ca->pid > cb->pid)
  80                 return 1;
  81
  82         return 0;
  83 }
  84
  85 void parse_cmdlines(char *file, int size __unused)
  86 {
  87         struct cmdline_list {
  88                 struct cmdline_list     *next;
  89                 char                    *comm;
  90                 int                     pid;
  91         } *list = NULL, *item;
  92         char *line;
  93         char *next = NULL;
  94         int i;
  95
  96         line = strtok_r(file, "\n", &next);
  97         while (line) {
  98                 item = malloc_or_die(sizeof(*item));
  99                 sscanf(line, "%d %as", &item->pid,
 100                        (float *)(void *)&item->comm); /* workaround gcc warning */
 101                 item->next = list;
 102                 list = item;
 103                 line = strtok_r(NULL, "\n", &next);
 104                 cmdline_count++;
 105         }
 106
 107         cmdlines = malloc_or_die(sizeof(*cmdlines) * cmdline_count);
 108
 109         i = 0;
 110         while (list) {
 111                 cmdlines[i].pid = list->pid;
 112                 cmdlines[i].comm = list->comm;
 113                 i++;
 114                 item = list;
 115                 list = list->next;
 116                 free(item);
 117         }
 118
 119         qsort(cmdlines, cmdline_count, sizeof(*cmdlines), cmdline_cmp);
 120 }
 121
 122 static struct func_map {
 123         unsigned long long              addr;
 124         char                            *func;
 125         char                            *mod;
 126 } *func_list;
 127 static unsigned int func_count;
 128
 129 static int func_cmp(const void *a, const void *b)
 130 {
 131         const struct func_map *fa = a;
 132         const struct func_map *fb = b;
 133
 134         if (fa->addr < fb->addr)
 135                 return -1;
 136         if (fa->addr > fb->addr)
 137                 return 1;
 138
 139         return 0;
 140 }
 141
 142 void parse_proc_kallsyms(char *file, unsigned int size __unused)
 143 {
 144         struct func_list {
 145                 struct func_list        *next;
 146                 unsigned long long      addr;
 147                 char                    *func;
 148                 char                    *mod;
 149         } *list = NULL, *item;
 150         char *line;
 151         char *next = NULL;
 152         char *addr_str;
 153         char ch;
 154         int ret;
 155         int i;
 156
 157         line = strtok_r(file, "\n", &next);
 158         while (line) {
 159                 item = malloc_or_die(sizeof(*item));
 160                 item->mod = NULL;
 161                 ret = sscanf(line, "%as %c %as\t[%as",
 162                              (float *)(void *)&addr_str, /* workaround gcc warning */
 163                              &ch,
 164                              (float *)(void *)&item->func,
 165                              (float *)(void *)&item->mod);
 166                 item->addr = strtoull(addr_str, NULL, 16);
 167                 free(addr_str);
 168
 169                 /* truncate the extra ']' */
 170                 if (item->mod)
 171                         item->mod[strlen(item->mod) - 1] = 0;
 172
 173
 174                 item->next = list;
 175                 list = item;
 176                 line = strtok_r(NULL, "\n", &next);
 177                 func_count++;
 178         }
 179
 180         func_list = malloc_or_die(sizeof(*func_list) * (func_count + 1));
 181
 182         i = 0;
 183         while (list) {
 184                 func_list[i].func = list->func;
 185                 func_list[i].addr = list->addr;
 186                 func_list[i].mod = list->mod;
 187                 i++;
 188                 item = list;
 189                 list = list->next;
 190                 free(item);
 191         }
 192
 193         qsort(func_list, func_count, sizeof(*func_list), func_cmp);
 194
 195         /*
 196          * Add a special record at the end.
 197          */
 198         func_list[func_count].func = NULL;
 199         func_list[func_count].addr = 0;
 200         func_list[func_count].mod = NULL;
 201 }
 202
 203 /*
 204  * We are searching for a record in between, not an exact
 205  * match.
 206  */
 207 static int func_bcmp(const void *a, const void *b)
 208 {
 209         const struct func_map *fa = a;
 210         const struct func_map *fb = b;
 211
 212         if ((fa->addr == fb->addr) ||
 213
 214             (fa->addr > fb->addr &&
 215              fa->addr < (fb+1)->addr))
 216                 return 0;
 217
 218         if (fa->addr < fb->addr)
 219                 return -1;
 220
 221         return 1;
 222 }
 223
 224 static struct func_map *find_func(unsigned long long addr)
 225 {
 226         struct func_map *func;
 227         struct func_map key;
 228
 229         key.addr = addr;
 230
 231         func = bsearch(&key, func_list, func_count, sizeof(*func_list),
 232                        func_bcmp);
 233
 234         return func;
 235 }
 236
 237 void print_funcs(void)
 238 {
 239         int i;
 240
 241         for (i = 0; i < (int)func_count; i++) {
 242                 printf("%016llx %s",
 243                        func_list[i].addr,
 244                        func_list[i].func);
 245                 if (func_list[i].mod)
 246                         printf(" [%s]\n", func_list[i].mod);
 247                 else
 248                         printf("\n");
 249         }
 250 }
 251
 252 static struct printk_map {
 253         unsigned long long              addr;
 254         char                            *printk;
 255 } *printk_list;
 256 static unsigned int printk_count;
 257
 258 static int printk_cmp(const void *a, const void *b)
 259 {
 260         const struct func_map *fa = a;
 261         const struct func_map *fb = b;
 262
 263         if (fa->addr < fb->addr)
 264                 return -1;
 265         if (fa->addr > fb->addr)
 266                 return 1;
 267
 268         return 0;
 269 }
 270
 271 static struct printk_map *find_printk(unsigned long long addr)
 272 {
 273         struct printk_map *printk;
 274         struct printk_map key;
 275
 276         key.addr = addr;
 277
 278         printk = bsearch(&key, printk_list, printk_count, sizeof(*printk_list),
 279                          printk_cmp);
 280
 281         return printk;
 282 }
 283
 284 void parse_ftrace_printk(char *file, unsigned int size __unused)
 285 {
 286         struct printk_list {
 287                 struct printk_list      *next;
 288                 unsigned long long      addr;
 289                 char                    *printk;
 290         } *list = NULL, *item;
 291         char *line;
 292         char *next = NULL;
 293         char *addr_str;
 294         int i;
 295
 296         line = strtok_r(file, "\n", &next);
 297         while (line) {
 298                 addr_str = strsep(&line, ":");
 299                 if (!line) {
 300                         warning("error parsing print strings");
 301                         break;
 302                 }
 303                 item = malloc_or_die(sizeof(*item));
 304                 item->addr = strtoull(addr_str, NULL, 16);
 305                 /* fmt still has a space, skip it */
 306                 item->printk = strdup(line+1);
 307                 item->next = list;
 308                 list = item;
 309                 line = strtok_r(NULL, "\n", &next);
 310                 printk_count++;
 311         }
 312
 313         printk_list = malloc_or_die(sizeof(*printk_list) * printk_count + 1);
 314
 315         i = 0;
 316         while (list) {
 317                 printk_list[i].printk = list->printk;
 318                 printk_list[i].addr = list->addr;
 319                 i++;
 320                 item = list;
 321                 list = list->next;
 322                 free(item);
 323         }
 324
 325         qsort(printk_list, printk_count, sizeof(*printk_list), printk_cmp);
 326 }
 327
 328 void print_printk(void)
 329 {
 330         int i;
 331
 332         for (i = 0; i < (int)printk_count; i++) {
 333                 printf("%016llx %s\n",
 334                        printk_list[i].addr,
 335                        printk_list[i].printk);
 336         }
 337 }
 338
 339 static struct event *alloc_event(void)
 340 {
 341         struct event *event;
 342
 343         event = malloc_or_die(sizeof(*event));
 344         memset(event, 0, sizeof(*event));
 345
 346         return event;
 347 }
 348
 349 enum event_type {
 350         EVENT_ERROR,
 351         EVENT_NONE,
 352         EVENT_SPACE,
 353         EVENT_NEWLINE,
 354         EVENT_OP,
 355         EVENT_DELIM,
 356         EVENT_ITEM,
 357         EVENT_DQUOTE,
 358         EVENT_SQUOTE,
 359 };
 360
 361 static struct event *event_list;
 362
 363 static void add_event(struct event *event)
 364 {
 365         event->next = event_list;
 366         event_list = event;
 367 }
 368
 369 static int event_item_type(enum event_type type)
 370 {
 371         switch (type) {
 372         case EVENT_ITEM ... EVENT_SQUOTE:
 373                 return 1;
 374         case EVENT_ERROR ... EVENT_DELIM:
 375         default:
 376                 return 0;
 377         }
 378 }
 379
 380 static void free_arg(struct print_arg *arg)
 381 {
 382         if (!arg)
 383                 return;
 384
 385         switch (arg->type) {
 386         case PRINT_ATOM:
 387                 if (arg->atom.atom)
 388                         free(arg->atom.atom);
 389                 break;
 390         case PRINT_NULL:
 391         case PRINT_FIELD ... PRINT_OP:
 392         default:
 393                 /* todo */
 394                 break;
 395         }
 396
 397         free(arg);
 398 }
 399
 400 static enum event_type get_type(int ch)
 401 {
 402         if (ch == '\n')
 403                 return EVENT_NEWLINE;
 404         if (isspace(ch))
 405                 return EVENT_SPACE;
 406         if (isalnum(ch) || ch == '_')
 407                 return EVENT_ITEM;
 408         if (ch == '\'')
 409                 return EVENT_SQUOTE;
 410         if (ch == '"')
 411                 return EVENT_DQUOTE;
 412         if (!isprint(ch))
 413                 return EVENT_NONE;
 414         if (ch == '(' || ch == ')' || ch == ',')
 415                 return EVENT_DELIM;
 416
 417         return EVENT_OP;
 418 }
 419
 420 static int __read_char(void)
 421 {
 422         if (input_buf_ptr >= input_buf_siz)
 423                 return -1;
 424
 425         return input_buf[input_buf_ptr++];
 426 }
 427
 428 static int __peek_char(void)
 429 {
 430         if (input_buf_ptr >= input_buf_siz)
 431                 return -1;
 432
 433         return input_buf[input_buf_ptr];
 434 }
 435
 436 static enum event_type __read_token(char **tok)
 437 {
 438         char buf[BUFSIZ];
 439         int ch, last_ch, quote_ch, next_ch;
 440         int i = 0;
 441         int tok_size = 0;
 442         enum event_type type;
 443
 444         *tok = NULL;
 445
 446
 447         ch = __read_char();
 448         if (ch < 0)
 449                 return EVENT_NONE;
 450
 451         type = get_type(ch);
 452         if (type == EVENT_NONE)
 453                 return type;
 454
 455         buf[i++] = ch;
 456
 457         switch (type) {
 458         case EVENT_NEWLINE:
 459         case EVENT_DELIM:
 460                 *tok = malloc_or_die(2);
 461                 (*tok)[0] = ch;
 462                 (*tok)[1] = 0;
 463                 return type;
 464
 465         case EVENT_OP:
 466                 switch (ch) {
 467                 case '-':
 468                         next_ch = __peek_char();
 469                         if (next_ch == '>') {
 470                                 buf[i++] = __read_char();
 471                                 break;
 472                         }
 473                         /* fall through */
 474                 case '+':
 475                 case '|':
 476                 case '&':
 477                 case '>':
 478                 case '<':
 479                         last_ch = ch;
 480                         ch = __peek_char();
 481                         if (ch != last_ch)
 482                                 goto test_equal;
 483                         buf[i++] = __read_char();
 484                         switch (last_ch) {
 485                         case '>':
 486                         case '<':
 487                                 goto test_equal;
 488                         default:
 489                                 break;
 490                         }
 491                         break;
 492                 case '!':
 493                 case '=':
 494                         goto test_equal;
 495                 default: /* what should we do instead? */
 496                         break;
 497                 }
 498                 buf[i] = 0;
 499                 *tok = strdup(buf);
 500                 return type;
 501
 502  test_equal:
 503                 ch = __peek_char();
 504                 if (ch == '=')
 505                         buf[i++] = __read_char();
 506                 break;
 507
 508         case EVENT_DQUOTE:
 509         case EVENT_SQUOTE:
 510                 /* don't keep quotes */
 511                 i--;
 512                 quote_ch = ch;
 513                 last_ch = 0;
 514                 do {
 515                         if (i == (BUFSIZ - 1)) {
 516                                 buf[i] = 0;
 517                                 if (*tok) {
 518                                         *tok = realloc(*tok, tok_size + BUFSIZ);
 519                                         if (!*tok)
 520                                                 return EVENT_NONE;
 521                                         strcat(*tok, buf);
 522                                 } else
 523                                         *tok = strdup(buf);
 524
 525                                 if (!*tok)
 526                                         return EVENT_NONE;
 527                                 tok_size += BUFSIZ;
 528                                 i = 0;
 529                         }
 530                         last_ch = ch;
 531                         ch = __read_char();
 532                         buf[i++] = ch;
 533                         /* the '\' '\' will cancel itself */
 534                         if (ch == '\\' && last_ch == '\\')
 535                                 last_ch = 0;
 536                 } while (ch != quote_ch || last_ch == '\\');
 537                 /* remove the last quote */
 538                 i--;
 539                 goto out;
 540
 541         case EVENT_ERROR ... EVENT_SPACE:
 542         case EVENT_ITEM:
 543         default:
 544                 break;
 545         }
 546
 547         while (get_type(__peek_char()) == type) {
 548                 if (i == (BUFSIZ - 1)) {
 549                         buf[i] = 0;
 550                         if (*tok) {
 551                                 *tok = realloc(*tok, tok_size + BUFSIZ);
 552                                 if (!*tok)
 553                                         return EVENT_NONE;
 554                                 strcat(*tok, buf);
 555                         } else
 556                                 *tok = strdup(buf);
 557
 558                         if (!*tok)
 559                                 return EVENT_NONE;
 560                         tok_size += BUFSIZ;
 561                         i = 0;
 562                 }
 563                 ch = __read_char();
 564                 buf[i++] = ch;
 565         }
 566
 567  out:
 568         buf[i] = 0;
 569         if (*tok) {
 570                 *tok = realloc(*tok, tok_size + i);
 571                 if (!*tok)
 572                         return EVENT_NONE;
 573                 strcat(*tok, buf);
 574         } else
 575                 *tok = strdup(buf);
 576         if (!*tok)
 577                 return EVENT_NONE;
 578
 579         return type;
 580 }
 581
 582 static void free_token(char *tok)
 583 {
 584         if (tok)
 585                 free(tok);
 586 }
 587
 588 static enum event_type read_token(char **tok)
 589 {
 590         enum event_type type;
 591
 592         for (;;) {
 593                 type = __read_token(tok);
 594                 if (type != EVENT_SPACE)
 595                         return type;
 596
 597                 free_token(*tok);
 598         }
 599
 600         /* not reached */
 601         return EVENT_NONE;
 602 }
 603
 604 /* no newline */
 605 static enum event_type read_token_item(char **tok)
 606 {
 607         enum event_type type;
 608
 609         for (;;) {
 610                 type = __read_token(tok);
 611                 if (type != EVENT_SPACE && type != EVENT_NEWLINE)
 612                         return type;
 613
 614                 free_token(*tok);
 615         }
 616
 617         /* not reached */
 618         return EVENT_NONE;
 619 }
 620
 621 static int test_type(enum event_type type, enum event_type expect)
 622 {
 623         if (type != expect) {
 624                 warning("Error: expected type %d but read %d",
 625                     expect, type);
 626                 return -1;
 627         }
 628         return 0;
 629 }
 630
 631 static int test_type_token(enum event_type type, char *token,
 632                     enum event_type expect, const char *expect_tok)
 633 {
 634         if (type != expect) {
 635                 warning("Error: expected type %d but read %d",
 636                     expect, type);
 637                 return -1;
 638         }
 639
 640         if (strcmp(token, expect_tok) != 0) {
 641                 warning("Error: expected '%s' but read '%s'",
 642                     expect_tok, token);
 643                 return -1;
 644         }
 645         return 0;
 646 }
 647
 648 static int __read_expect_type(enum event_type expect, char **tok, int newline_ok)
 649 {
 650         enum event_type type;
 651
 652         if (newline_ok)
 653                 type = read_token(tok);
 654         else
 655                 type = read_token_item(tok);
 656         return test_type(type, expect);
 657 }
 658
 659 static int read_expect_type(enum event_type expect, char **tok)
 660 {
 661         return __read_expect_type(expect, tok, 1);
 662 }
 663
 664 static int __read_expected(enum event_type expect, const char *str, int newline_ok)
 665 {
 666         enum event_type type;
 667         char *token;
 668         int ret;
 669
 670         if (newline_ok)
 671                 type = read_token(&token);
 672         else
 673                 type = read_token_item(&token);
 674
 675         ret = test_type_token(type, token, expect, str);
 676
 677         free_token(token);
 678
 679         return ret;
 680 }
 681
 682 static int read_expected(enum event_type expect, const char *str)
 683 {
 684         return __read_expected(expect, str, 1);
 685 }
 686
 687 static int read_expected_item(enum event_type expect, const char *str)
 688 {
 689         return __read_expected(expect, str, 0);
 690 }
 691
 692 static char *event_read_name(void)
 693 {
 694         char *token;
 695
 696         if (read_expected(EVENT_ITEM, "name") < 0)
 697                 return NULL;
 698
 699         if (read_expected(EVENT_OP, ":") < 0)
 700                 return NULL;
 701
 702         if (read_expect_type(EVENT_ITEM, &token) < 0)
 703                 goto fail;
 704
 705         return token;
 706
 707  fail:
 708         free_token(token);
 709         return NULL;
 710 }
 711
 712 static int event_read_id(void)
 713 {
 714         char *token;
 715         int id;
 716
 717         if (read_expected_item(EVENT_ITEM, "ID") < 0)
 718                 return -1;
 719
 720         if (read_expected(EVENT_OP, ":") < 0)
 721                 return -1;
 722
 723         if (read_expect_type(EVENT_ITEM, &token) < 0)
 724                 goto fail;
 725
 726         id = strtoul(token, NULL, 0);
 727         free_token(token);
 728         return id;
 729
 730  fail:
 731         free_token(token);
 732         return -1;
 733 }
 734
 735 static int field_is_string(struct format_field *field)
 736 {
 737         if ((field->flags & FIELD_IS_ARRAY) &&
 738             (!strstr(field->type, "char") || !strstr(field->type, "u8") ||
 739              !strstr(field->type, "s8")))
 740                 return 1;
 741
 742         return 0;
 743 }
 744
 745 static int field_is_dynamic(struct format_field *field)
 746 {
 747         if (!strcmp(field->type, "__data_loc"))
 748                 return 1;
 749
 750         return 0;
 751 }
 752
 753 static int event_read_fields(struct event *event, struct format_field **fields)
 754 {
 755         struct format_field *field = NULL;
 756         enum event_type type;
 757         char *token;
 758         char *last_token;
 759         int count = 0;
 760
 761         do {
 762                 type = read_token(&token);
 763                 if (type == EVENT_NEWLINE) {
 764                         free_token(token);
 765                         return count;
 766                 }
 767
 768                 count++;
 769
 770                 if (test_type_token(type, token, EVENT_ITEM, "field"))
 771                         goto fail;
 772                 free_token(token);
 773
 774                 type = read_token(&token);
 775                 /*
 776                  * The ftrace fields may still use the "special" name.
 777                  * Just ignore it.
 778                  */
 779                 if (event->flags & EVENT_FL_ISFTRACE &&
 780                     type == EVENT_ITEM && strcmp(token, "special") == 0) {
 781                         free_token(token);
 782                         type = read_token(&token);
 783                 }
 784
 785                 if (test_type_token(type, token, EVENT_OP, ":") < 0)
 786                         return -1;
 787
 788                 if (read_expect_type(EVENT_ITEM, &token) < 0)
 789                         goto fail;
 790
 791                 last_token = token;
 792
 793                 field = malloc_or_die(sizeof(*field));
 794                 memset(field, 0, sizeof(*field));
 795
 796                 /* read the rest of the type */
 797                 for (;;) {
 798                         type = read_token(&token);
 799                         if (type == EVENT_ITEM ||
 800                             (type == EVENT_OP && strcmp(token, "*") == 0) ||
 801                             /*
 802                              * Some of the ftrace fields are broken and have
 803                              * an illegal "." in them.
 804                              */
 805                             (event->flags & EVENT_FL_ISFTRACE &&
 806                              type == EVENT_OP && strcmp(token, ".") == 0)) {
 807
 808                                 if (strcmp(token, "*") == 0)
 809                                         field->flags |= FIELD_IS_POINTER;
 810
 811                                 if (field->type) {
 812                                         field->type = realloc(field->type,
 813                                                               strlen(field->type) +
 814                                                               strlen(last_token) + 2);
 815                                         strcat(field->type, " ");
 816                                         strcat(field->type, last_token);
 817                                 } else
 818                                         field->type = last_token;
 819                                 last_token = token;
 820                                 continue;
 821                         }
 822
 823                         break;
 824                 }
 825
 826                 if (!field->type) {
 827                         die("no type found");
 828                         goto fail;
 829                 }
 830                 field->name = last_token;
 831
 832                 if (test_type(type, EVENT_OP))
 833                         goto fail;
 834
 835                 if (strcmp(token, "[") == 0) {
 836                         enum event_type last_type = type;
 837                         char *brackets = token;
 838                         int len;
 839
 840                         field->flags |= FIELD_IS_ARRAY;
 841
 842                         type = read_token(&token);
 843                         while (strcmp(token, "]") != 0) {
 844                                 if (last_type == EVENT_ITEM &&
 845                                     type == EVENT_ITEM)
 846                                         len = 2;
 847                                 else
 848                                         len = 1;
 849                                 last_type = type;
 850
 851                                 brackets = realloc(brackets,
 852                                                    strlen(brackets) +
 853                                                    strlen(token) + len);
 854                                 if (len == 2)
 855                                         strcat(brackets, " ");
 856                                 strcat(brackets, token);
 857                                 free_token(token);
 858                                 type = read_token(&token);
 859                                 if (type == EVENT_NONE) {
 860                                         die("failed to find token");
 861                                         goto fail;
 862                                 }
 863                         }
 864
 865                         free_token(token);
 866
 867                         brackets = realloc(brackets, strlen(brackets) + 2);
 868                         strcat(brackets, "]");
 869
 870                         /* add brackets to type */
 871
 872                         type = read_token(&token);
 873                         /*
 874                          * If the next token is not an OP, then it is of
 875                          * the format: type [] item;
 876                          */
 877                         if (type == EVENT_ITEM) {
 878                                 field->type = realloc(field->type,
 879                                                       strlen(field->type) +
 880                                                       strlen(field->name) +
 881                                                       strlen(brackets) + 2);
 882                                 strcat(field->type, " ");
 883                                 strcat(field->type, field->name);
 884                                 free_token(field->name);
 885                                 strcat(field->type, brackets);
 886                                 field->name = token;
 887                                 type = read_token(&token);
 888                         } else {
 889                                 field->type = realloc(field->type,
 890                                                       strlen(field->type) +
 891                                                       strlen(brackets) + 1);
 892                                 strcat(field->type, brackets);
 893                         }
 894                         free(brackets);
 895                 }
 896
 897                 if (field_is_string(field)) {
 898                         field->flags |= FIELD_IS_STRING;
 899                         if (field_is_dynamic(field))
 900                                 field->flags |= FIELD_IS_DYNAMIC;
 901                 }
 902
 903                 if (test_type_token(type, token,  EVENT_OP, ";"))
 904                         goto fail;
 905                 free_token(token);
 906
 907                 if (read_expected(EVENT_ITEM, "offset") < 0)
 908                         goto fail_expect;
 909
 910                 if (read_expected(EVENT_OP, ":") < 0)
 911                         goto fail_expect;
 912
 913                 if (read_expect_type(EVENT_ITEM, &token))
 914                         goto fail;
 915                 field->offset = strtoul(token, NULL, 0);
 916                 free_token(token);
 917
 918                 if (read_expected(EVENT_OP, ";") < 0)
 919                         goto fail_expect;
 920
 921                 if (read_expected(EVENT_ITEM, "size") < 0)
 922                         goto fail_expect;
 923
 924                 if (read_expected(EVENT_OP, ":") < 0)
 925                         goto fail_expect;
 926
 927                 if (read_expect_type(EVENT_ITEM, &token))
 928                         goto fail;
 929                 field->size = strtoul(token, NULL, 0);
 930                 free_token(token);
 931
 932                 if (read_expected(EVENT_OP, ";") < 0)
 933                         goto fail_expect;
 934
 935                 type = read_token(&token);
 936                 if (type != EVENT_NEWLINE) {
 937                         /* newer versions of the kernel have a "signed" type */
 938                         if (test_type_token(type, token, EVENT_ITEM, "signed"))
 939                                 goto fail;
 940
 941                         free_token(token);
 942
 943                         if (read_expected(EVENT_OP, ":") < 0)
 944                                 goto fail_expect;
 945
 946                         if (read_expect_type(EVENT_ITEM, &token))
 947                                 goto fail;
 948
 949                         if (strtoul(token, NULL, 0))
 950                                 field->flags |= FIELD_IS_SIGNED;
 951
 952                         free_token(token);
 953                         if (read_expected(EVENT_OP, ";") < 0)
 954                                 goto fail_expect;
 955
 956                         if (read_expect_type(EVENT_NEWLINE, &token))
 957                                 goto fail;
 958                 }
 959
 960                 free_token(token);
 961
 962                 *fields = field;
 963                 fields = &field->next;
 964
 965         } while (1);
 966
 967         return 0;
 968
 969 fail:
 970         free_token(token);
 971 fail_expect:
 972         if (field)
 973                 free(field);
 974         return -1;
 975 }
 976
 977 static int event_read_format(struct event *event)
 978 {
 979         char *token;
 980         int ret;
 981
 982         if (read_expected_item(EVENT_ITEM, "format") < 0)
 983                 return -1;
 984
 985         if (read_expected(EVENT_OP, ":") < 0)
 986                 return -1;
 987
 988         if (read_expect_type(EVENT_NEWLINE, &token))
 989                 goto fail;
 990         free_token(token);
 991
 992         ret = event_read_fields(event, &event->format.common_fields);
 993         if (ret < 0)
 994                 return ret;
 995         event->format.nr_common = ret;
 996
 997         ret = event_read_fields(event, &event->format.fields);
 998         if (ret < 0)
 999                 return ret;
1000         event->format.nr_fields = ret;
1001
1002         return 0;
1003
1004  fail:
1005         free_token(token);
1006         return -1;
1007 }
1008
1009 enum event_type
1010 process_arg_token(struct event *event, struct print_arg *arg,
1011                   char **tok, enum event_type type);
1012
1013 static enum event_type
1014 process_arg(struct event *event, struct print_arg *arg, char **tok)
1015 {
1016         enum event_type type;
1017         char *token;
1018
1019         type = read_token(&token);
1020         *tok = token;
1021
1022         return process_arg_token(event, arg, tok, type);
1023 }
1024
1025 static enum event_type
1026 process_cond(struct event *event, struct print_arg *top, char **tok)
1027 {
1028         struct print_arg *arg, *left, *right;
1029         enum event_type type;
1030         char *token = NULL;
1031
1032         arg = malloc_or_die(sizeof(*arg));
1033         memset(arg, 0, sizeof(*arg));
1034
1035         left = malloc_or_die(sizeof(*left));
1036
1037         right = malloc_or_die(sizeof(*right));
1038
1039         arg->type = PRINT_OP;
1040         arg->op.left = left;
1041         arg->op.right = right;
1042
1043         *tok = NULL;
1044         type = process_arg(event, left, &token);
1045         if (test_type_token(type, token, EVENT_OP, ":"))
1046                 goto out_free;
1047
1048         arg->op.op = token;
1049
1050         type = process_arg(event, right, &token);
1051
1052         top->op.right = arg;
1053
1054         *tok = token;
1055         return type;
1056
1057 out_free:
1058         free_token(*tok);
1059         free(right);
1060         free(left);
1061         free_arg(arg);
1062         return EVENT_ERROR;
1063 }
1064
1065 static enum event_type
1066 process_array(struct event *event, struct print_arg *top, char **tok)
1067 {
1068         struct print_arg *arg;
1069         enum event_type type;
1070         char *token = NULL;
1071
1072         arg = malloc_or_die(sizeof(*arg));
1073         memset(arg, 0, sizeof(*arg));
1074
1075         *tok = NULL;
1076         type = process_arg(event, arg, &token);
1077         if (test_type_token(type, token, EVENT_OP, "]"))
1078                 goto out_free;
1079
1080         top->op.right = arg;
1081
1082         free_token(token);
1083         type = read_token_item(&token);
1084         *tok = token;
1085
1086         return type;
1087
1088 out_free:
1089         free_token(*tok);
1090         free_arg(arg);
1091         return EVENT_ERROR;
1092 }
1093
1094 static int get_op_prio(char *op)
1095 {
1096         if (!op[1]) {
1097                 switch (op[0]) {
1098                 case '*':
1099                 case '/':
1100                 case '%':
1101                         return 6;
1102                 case '+':
1103                 case '-':
1104                         return 7;
1105                         /* '>>' and '<<' are 8 */
1106                 case '<':
1107                 case '>':
1108                         return 9;
1109                         /* '==' and '!=' are 10 */
1110                 case '&':
1111                         return 11;
1112                 case '^':
1113                         return 12;
1114                 case '|':
1115                         return 13;
1116                 case '?':
1117                         return 16;
1118                 default:
1119                         die("unknown op '%c'", op[0]);
1120                         return -1;
1121                 }
1122         } else {
1123                 if (strcmp(op, "++") == 0 ||
1124                     strcmp(op, "--") == 0) {
1125                         return 3;
1126                 } else if (strcmp(op, ">>") == 0 ||
1127                            strcmp(op, "<<") == 0) {
1128                         return 8;
1129                 } else if (strcmp(op, ">=") == 0 ||
1130                            strcmp(op, "<=") == 0) {
1131                         return 9;
1132                 } else if (strcmp(op, "==") == 0 ||
1133                            strcmp(op, "!=") == 0) {
1134                         return 10;
1135                 } else if (strcmp(op, "&&") == 0) {
1136                         return 14;
1137                 } else if (strcmp(op, "||") == 0) {
1138                         return 15;
1139                 } else {
1140                         die("unknown op '%s'", op);
1141                         return -1;
1142                 }
1143         }
1144 }
1145
1146 static void set_op_prio(struct print_arg *arg)
1147 {
1148
1149         /* single ops are the greatest */
1150         if (!arg->op.left || arg->op.left->type == PRINT_NULL) {
1151                 arg->op.prio = 0;
1152                 return;
1153         }
1154
1155         arg->op.prio = get_op_prio(arg->op.op);
1156 }
1157
1158 static enum event_type
1159 process_op(struct event *event, struct print_arg *arg, char **tok)
1160 {
1161         struct print_arg *left, *right = NULL;
1162         enum event_type type;
1163         char *token;
1164
1165         /* the op is passed in via tok */
1166         token = *tok;
1167
1168         if (arg->type == PRINT_OP && !arg->op.left) {
1169                 /* handle single op */
1170                 if (token[1]) {
1171                         die("bad op token %s", token);
1172                         return EVENT_ERROR;
1173                 }
1174                 switch (token[0]) {
1175                 case '!':
1176                 case '+':
1177                 case '-':
1178                         break;
1179                 default:
1180                         die("bad op token %s", token);
1181                         return EVENT_ERROR;
1182                 }
1183
1184                 /* make an empty left */
1185                 left = malloc_or_die(sizeof(*left));
1186                 left->type = PRINT_NULL;
1187                 arg->op.left = left;
1188
1189                 right = malloc_or_die(sizeof(*right));
1190                 arg->op.right = right;
1191
1192                 type = process_arg(event, right, tok);
1193
1194         } else if (strcmp(token, "?") == 0) {
1195
1196                 left = malloc_or_die(sizeof(*left));
1197                 /* copy the top arg to the left */
1198                 *left = *arg;
1199
1200                 arg->type = PRINT_OP;
1201                 arg->op.op = token;
1202                 arg->op.left = left;
1203                 arg->op.prio = 0;
1204
1205                 type = process_cond(event, arg, tok);
1206
1207         } else if (strcmp(token, ">>") == 0 ||
1208                    strcmp(token, "<<") == 0 ||
1209                    strcmp(token, "&") == 0 ||
1210                    strcmp(token, "|") == 0 ||
1211                    strcmp(token, "&&") == 0 ||
1212                    strcmp(token, "||") == 0 ||
1213                    strcmp(token, "-") == 0 ||
1214                    strcmp(token, "+") == 0 ||
1215                    strcmp(token, "*") == 0 ||
1216                    strcmp(token, "^") == 0 ||
1217                    strcmp(token, "/") == 0 ||
1218                    strcmp(token, "<") == 0 ||
1219                    strcmp(token, ">") == 0 ||
1220                    strcmp(token, "==") == 0 ||
1221                    strcmp(token, "!=") == 0) {
1222
1223                 left = malloc_or_die(sizeof(*left));
1224
1225                 /* copy the top arg to the left */
1226                 *left = *arg;
1227
1228                 arg->type = PRINT_OP;
1229                 arg->op.op = token;
1230                 arg->op.left = left;
1231
1232                 set_op_prio(arg);
1233
1234                 right = malloc_or_die(sizeof(*right));
1235
1236                 type = read_token_item(&token);
1237                 *tok = token;
1238
1239                 /* could just be a type pointer */
1240                 if ((strcmp(arg->op.op, "*") == 0) &&
1241                     type == EVENT_DELIM && (strcmp(token, ")") == 0)) {
1242                         if (left->type != PRINT_ATOM)
1243                                 die("bad pointer type");
1244                         left->atom.atom = realloc(left->atom.atom,
1245                                             sizeof(left->atom.atom) + 3);
1246                         strcat(left->atom.atom, " *");
1247                         *arg = *left;
1248                         free(arg);
1249
1250                         return type;
1251                 }
1252
1253                 type = process_arg_token(event, right, tok, type);
1254
1255                 arg->op.right = right;
1256
1257         } else if (strcmp(token, "[") == 0) {
1258
1259                 left = malloc_or_die(sizeof(*left));
1260                 *left = *arg;
1261
1262                 arg->type = PRINT_OP;
1263                 arg->op.op = token;
1264                 arg->op.left = left;
1265
1266                 arg->op.prio = 0;
1267                 type = process_array(event, arg, tok);
1268
1269         } else {
1270                 warning("unknown op '%s'", token);
1271                 event->flags |= EVENT_FL_FAILED;
1272                 /* the arg is now the left side */
1273                 return EVENT_NONE;
1274         }
1275
1276         if (type == EVENT_OP) {
1277                 int prio;
1278
1279                 /* higher prios need to be closer to the root */
1280                 prio = get_op_prio(*tok);
1281
1282                 if (prio > arg->op.prio)
1283                         return process_op(event, arg, tok);
1284
1285                 return process_op(event, right, tok);
1286         }
1287
1288         return type;
1289 }
1290
1291 static enum event_type
1292 process_entry(struct event *event __unused, struct print_arg *arg,
1293               char **tok)
1294 {
1295         enum event_type type;
1296         char *field;
1297         char *token;
1298
1299         if (read_expected(EVENT_OP, "->") < 0)
1300                 return EVENT_ERROR;
1301
1302         if (read_expect_type(EVENT_ITEM, &token) < 0)
1303                 goto fail;
1304         field = token;
1305
1306         arg->type = PRINT_FIELD;
1307         arg->field.name = field;
1308
1309         if (is_flag_field) {
1310                 arg->field.field = find_any_field(event, arg->field.name);
1311                 arg->field.field->flags |= FIELD_IS_FLAG;
1312                 is_flag_field = 0;
1313         } else if (is_symbolic_field) {
1314                 arg->field.field = find_any_field(event, arg->field.name);
1315                 arg->field.field->flags |= FIELD_IS_SYMBOLIC;
1316                 is_symbolic_field = 0;
1317         }
1318
1319         type = read_token(&token);
1320         *tok = token;
1321
1322         return type;
1323
1324 fail:
1325         free_token(token);
1326         return EVENT_ERROR;
1327 }
1328
1329 static char *arg_eval (struct print_arg *arg);
1330
1331 static long long arg_num_eval(struct print_arg *arg)
1332 {
1333         long long left, right;
1334         long long val = 0;
1335
1336         switch (arg->type) {
1337         case PRINT_ATOM:
1338                 val = strtoll(arg->atom.atom, NULL, 0);
1339                 break;
1340         case PRINT_TYPE:
1341                 val = arg_num_eval(arg->typecast.item);
1342                 break;
1343         case PRINT_OP:
1344                 switch (arg->op.op[0]) {
1345                 case '|':
1346                         left = arg_num_eval(arg->op.left);
1347                         right = arg_num_eval(arg->op.right);
1348                         if (arg->op.op[1])
1349                                 val = left || right;
1350                         else
1351                                 val = left | right;
1352                         break;
1353                 case '&':
1354                         left = arg_num_eval(arg->op.left);
1355                         right = arg_num_eval(arg->op.right);
1356                         if (arg->op.op[1])
1357                                 val = left && right;
1358                         else
1359                                 val = left & right;
1360                         break;
1361                 case '<':
1362                         left = arg_num_eval(arg->op.left);
1363                         right = arg_num_eval(arg->op.right);
1364                         switch (arg->op.op[1]) {
1365                         case 0:
1366                                 val = left < right;
1367                                 break;
1368                         case '<':
1369                                 val = left << right;
1370                                 break;
1371                         case '=':
1372                                 val = left <= right;
1373                                 break;
1374                         default:
1375                                 die("unknown op '%s'", arg->op.op);
1376                         }
1377                         break;
1378                 case '>':
1379                         left = arg_num_eval(arg->op.left);
1380                         right = arg_num_eval(arg->op.right);
1381                         switch (arg->op.op[1]) {
1382                         case 0:
1383                                 val = left > right;
1384                                 break;
1385                         case '>':
1386                                 val = left >> right;
1387                                 break;
1388                         case '=':
1389                                 val = left >= right;
1390                                 break;
1391                         default:
1392                                 die("unknown op '%s'", arg->op.op);
1393                         }
1394                         break;
1395                 case '=':
1396                         left = arg_num_eval(arg->op.left);
1397                         right = arg_num_eval(arg->op.right);
1398
1399                         if (arg->op.op[1] != '=')
1400                                 die("unknown op '%s'", arg->op.op);
1401
1402                         val = left == right;
1403                         break;
1404                 case '!':
1405                         left = arg_num_eval(arg->op.left);
1406                         right = arg_num_eval(arg->op.right);
1407
1408                         switch (arg->op.op[1]) {
1409                         case '=':
1410                                 val = left != right;
1411                                 break;
1412                         default:
1413                                 die("unknown op '%s'", arg->op.op);
1414                         }
1415                         break;
1416                 default:
1417                         die("unknown op '%s'", arg->op.op);
1418                 }
1419                 break;
1420
1421         case PRINT_NULL:
1422         case PRINT_FIELD ... PRINT_SYMBOL:
1423         case PRINT_STRING:
1424         default:
1425                 die("invalid eval type %d", arg->type);
1426
1427         }
1428         return val;
1429 }
1430
1431 static char *arg_eval (struct print_arg *arg)
1432 {
1433         long long val;
1434         static char buf[20];
1435
1436         switch (arg->type) {
1437         case PRINT_ATOM:
1438                 return arg->atom.atom;
1439         case PRINT_TYPE:
1440                 return arg_eval(arg->typecast.item);
1441         case PRINT_OP:
1442                 val = arg_num_eval(arg);
1443                 sprintf(buf, "%lld", val);
1444                 return buf;
1445
1446         case PRINT_NULL:
1447         case PRINT_FIELD ... PRINT_SYMBOL:
1448         case PRINT_STRING:
1449         default:
1450                 die("invalid eval type %d", arg->type);
1451                 break;
1452         }
1453
1454         return NULL;
1455 }
1456
1457 static enum event_type
1458 process_fields(struct event *event, struct print_flag_sym **list, char **tok)
1459 {
1460         enum event_type type;
1461         struct print_arg *arg = NULL;
1462         struct print_flag_sym *field;
1463         char *token = NULL;
1464         char *value;
1465
1466         do {
1467                 free_token(token);
1468                 type = read_token_item(&token);
1469                 if (test_type_token(type, token, EVENT_OP, "{"))
1470                         break;
1471
1472                 arg = malloc_or_die(sizeof(*arg));
1473
1474                 free_token(token);
1475                 type = process_arg(event, arg, &token);
1476                 if (test_type_token(type, token, EVENT_DELIM, ","))
1477                         goto out_free;
1478
1479                 field = malloc_or_die(sizeof(*field));
1480                 memset(field, 0, sizeof(*field));
1481
1482                 value = arg_eval(arg);
1483                 field->value = strdup(value);
1484
1485                 free_token(token);
1486                 type = process_arg(event, arg, &token);
1487                 if (test_type_token(type, token, EVENT_OP, "}"))
1488                         goto out_free;
1489
1490                 value = arg_eval(arg);
1491                 field->str = strdup(value);
1492                 free_arg(arg);
1493                 arg = NULL;
1494
1495                 *list = field;
1496                 list = &field->next;
1497
1498                 free_token(token);
1499                 type = read_token_item(&token);
1500         } while (type == EVENT_DELIM && strcmp(token, ",") == 0);
1501
1502         *tok = token;
1503         return type;
1504
1505 out_free:
1506         free_arg(arg);
1507         free_token(token);
1508
1509         return EVENT_ERROR;
1510 }
1511
1512 static enum event_type
1513 process_flags(struct event *event, struct print_arg *arg, char **tok)
1514 {
1515         struct print_arg *field;
1516         enum event_type type;
1517         char *token;
1518
1519         memset(arg, 0, sizeof(*arg));
1520         arg->type = PRINT_FLAGS;
1521
1522         if (read_expected_item(EVENT_DELIM, "(") < 0)
1523                 return EVENT_ERROR;
1524
1525         field = malloc_or_die(sizeof(*field));
1526
1527         type = process_arg(event, field, &token);
1528         if (test_type_token(type, token, EVENT_DELIM, ","))
1529                 goto out_free;
1530
1531         arg->flags.field = field;
1532
1533         type = read_token_item(&token);
1534         if (event_item_type(type)) {
1535                 arg->flags.delim = token;
1536                 type = read_token_item(&token);
1537         }
1538
1539         if (test_type_token(type, token, EVENT_DELIM, ","))
1540                 goto out_free;
1541
1542         type = process_fields(event, &arg->flags.flags, &token);
1543         if (test_type_token(type, token, EVENT_DELIM, ")"))
1544                 goto out_free;
1545
1546         free_token(token);
1547         type = read_token_item(tok);
1548         return type;
1549
1550 out_free:
1551         free_token(token);
1552         return EVENT_ERROR;
1553 }
1554
1555 static enum event_type
1556 process_symbols(struct event *event, struct print_arg *arg, char **tok)
1557 {
1558         struct print_arg *field;
1559         enum event_type type;
1560         char *token;
1561
1562         memset(arg, 0, sizeof(*arg));
1563         arg->type = PRINT_SYMBOL;
1564
1565         if (read_expected_item(EVENT_DELIM, "(") < 0)
1566                 return EVENT_ERROR;
1567
1568         field = malloc_or_die(sizeof(*field));
1569
1570         type = process_arg(event, field, &token);
1571         if (test_type_token(type, token, EVENT_DELIM, ","))
1572                 goto out_free;
1573
1574         arg->symbol.field = field;
1575
1576         type = process_fields(event, &arg->symbol.symbols, &token);
1577         if (test_type_token(type, token, EVENT_DELIM, ")"))
1578                 goto out_free;
1579
1580         free_token(token);
1581         type = read_token_item(tok);
1582         return type;
1583
1584 out_free:
1585         free_token(token);
1586         return EVENT_ERROR;
1587 }
1588
1589 static enum event_type
1590 process_paren(struct event *event, struct print_arg *arg, char **tok)
1591 {
1592         struct print_arg *item_arg;
1593         enum event_type type;
1594         char *token;
1595
1596         type = process_arg(event, arg, &token);
1597
1598         if (type == EVENT_ERROR)
1599                 return EVENT_ERROR;
1600
1601         if (type == EVENT_OP)
1602                 type = process_op(event, arg, &token);
1603
1604         if (type == EVENT_ERROR)
1605                 return EVENT_ERROR;
1606
1607         if (test_type_token(type, token, EVENT_DELIM, ")")) {
1608                 free_token(token);
1609                 return EVENT_ERROR;
1610         }
1611
1612         free_token(token);
1613         type = read_token_item(&token);
1614
1615         /*
1616          * If the next token is an item or another open paren, then
1617          * this was a typecast.
1618          */
1619         if (event_item_type(type) ||
1620             (type == EVENT_DELIM && strcmp(token, "(") == 0)) {
1621
1622                 /* make this a typecast and contine */
1623
1624                 /* prevous must be an atom */
1625                 if (arg->type != PRINT_ATOM)
1626                         die("previous needed to be PRINT_ATOM");
1627
1628                 item_arg = malloc_or_die(sizeof(*item_arg));
1629
1630                 arg->type = PRINT_TYPE;
1631                 arg->typecast.type = arg->atom.atom;
1632                 arg->typecast.item = item_arg;
1633                 type = process_arg_token(event, item_arg, &token, type);
1634
1635         }
1636
1637         *tok = token;
1638         return type;
1639 }
1640
1641
1642 static enum event_type
1643 process_str(struct event *event __unused, struct print_arg *arg, char **tok)
1644 {
1645         enum event_type type;
1646         char *token;
1647
1648         if (read_expected(EVENT_DELIM, "(") < 0)
1649                 return EVENT_ERROR;
1650
1651         if (read_expect_type(EVENT_ITEM, &token) < 0)
1652                 goto fail;
1653
1654         arg->type = PRINT_STRING;
1655         arg->string.string = token;
1656         arg->string.offset = -1;
1657
1658         if (read_expected(EVENT_DELIM, ")") < 0)
1659                 return EVENT_ERROR;
1660
1661         type = read_token(&token);
1662         *tok = token;
1663
1664         return type;
1665 fail:
1666         free_token(token);
1667         return EVENT_ERROR;
1668 }
1669
1670 enum event_type
1671 process_arg_token(struct event *event, struct print_arg *arg,
1672                   char **tok, enum event_type type)
1673 {
1674         char *token;
1675         char *atom;
1676
1677         token = *tok;
1678
1679         switch (type) {
1680         case EVENT_ITEM:
1681                 if (strcmp(token, "REC") == 0) {
1682                         free_token(token);
1683                         type = process_entry(event, arg, &token);
1684                 } else if (strcmp(token, "__print_flags") == 0) {
1685                         free_token(token);
1686                         is_flag_field = 1;
1687                         type = process_flags(event, arg, &token);
1688                 } else if (strcmp(token, "__print_symbolic") == 0) {
1689                         free_token(token);
1690                         is_symbolic_field = 1;
1691                         type = process_symbols(event, arg, &token);
1692                 } else if (strcmp(token, "__get_str") == 0) {
1693                         free_token(token);
1694                         type = process_str(event, arg, &token);
1695                 } else {
1696                         atom = token;
1697                         /* test the next token */
1698                         type = read_token_item(&token);
1699
1700                         /* atoms can be more than one token long */
1701                         while (type == EVENT_ITEM) {
1702                                 atom = realloc(atom, strlen(atom) + strlen(token) + 2);
1703                                 strcat(atom, " ");
1704                                 strcat(atom, token);
1705                                 free_token(token);
1706                                 type = read_token_item(&token);
1707                         }
1708
1709                         /* todo, test for function */
1710
1711                         arg->type = PRINT_ATOM;
1712                         arg->atom.atom = atom;
1713                 }
1714                 break;
1715         case EVENT_DQUOTE:
1716         case EVENT_SQUOTE:
1717                 arg->type = PRINT_ATOM;
1718                 arg->atom.atom = token;
1719                 type = read_token_item(&token);
1720                 break;
1721         case EVENT_DELIM:
1722                 if (strcmp(token, "(") == 0) {
1723                         free_token(token);
1724                         type = process_paren(event, arg, &token);
1725                         break;
1726                 }
1727         case EVENT_OP:
1728                 /* handle single ops */
1729                 arg->type = PRINT_OP;
1730                 arg->op.op = token;
1731                 arg->op.left = NULL;
1732                 type = process_op(event, arg, &token);
1733
1734                 break;
1735
1736         case EVENT_ERROR ... EVENT_NEWLINE:
1737         default:
1738                 die("unexpected type %d", type);
1739         }
1740         *tok = token;
1741
1742         return type;
1743 }
1744
1745 static int event_read_print_args(struct event *event, struct print_arg **list)
1746 {
1747         enum event_type type = EVENT_ERROR;
1748         struct print_arg *arg;
1749         char *token;
1750         int args = 0;
1751
1752         do {
1753                 if (type == EVENT_NEWLINE) {
1754                         free_token(token);
1755                         type = read_token_item(&token);
1756                         continue;
1757                 }
1758
1759                 arg = malloc_or_die(sizeof(*arg));
1760                 memset(arg, 0, sizeof(*arg));
1761
1762                 type = process_arg(event, arg, &token);
1763
1764                 if (type == EVENT_ERROR) {
1765                         free_arg(arg);
1766                         return -1;
1767                 }
1768
1769                 *list = arg;
1770                 args++;
1771
1772                 if (type == EVENT_OP) {
1773                         type = process_op(event, arg, &token);
1774                         list = &arg->next;
1775                         continue;
1776                 }
1777
1778                 if (type == EVENT_DELIM && strcmp(token, ",") == 0) {
1779                         free_token(token);
1780                         *list = arg;
1781                         list = &arg->next;
1782                         continue;
1783                 }
1784                 break;
1785         } while (type != EVENT_NONE);
1786
1787         if (type != EVENT_NONE)
1788                 free_token(token);
1789
1790         return args;
1791 }
1792
1793 static int event_read_print(struct event *event)
1794 {
1795         enum event_type type;
1796         char *token;
1797         int ret;
1798
1799         if (read_expected_item(EVENT_ITEM, "print") < 0)
1800                 return -1;
1801
1802         if (read_expected(EVENT_ITEM, "fmt") < 0)
1803                 return -1;
1804
1805         if (read_expected(EVENT_OP, ":") < 0)
1806                 return -1;
1807
1808         if (read_expect_type(EVENT_DQUOTE, &token) < 0)
1809                 goto fail;
1810
1811  concat:
1812         event->print_fmt.format = token;
1813         event->print_fmt.args = NULL;
1814
1815         /* ok to have no arg */
1816         type = read_token_item(&token);
1817
1818         if (type == EVENT_NONE)
1819                 return 0;
1820
1821         /* Handle concatination of print lines */
1822         if (type == EVENT_DQUOTE) {
1823                 char *cat;
1824
1825                 cat = malloc_or_die(strlen(event->print_fmt.format) +
1826                                     strlen(token) + 1);
1827                 strcpy(cat, event->print_fmt.format);
1828                 strcat(cat, token);
1829                 free_token(token);
1830                 free_token(event->print_fmt.format);
1831                 event->print_fmt.format = NULL;
1832                 token = cat;
1833                 goto concat;
1834         }
1835
1836         if (test_type_token(type, token, EVENT_DELIM, ","))
1837                 goto fail;
1838
1839         free_token(token);
1840
1841         ret = event_read_print_args(event, &event->print_fmt.args);
1842         if (ret < 0)
1843                 return -1;
1844
1845         return ret;
1846
1847  fail:
1848         free_token(token);
1849         return -1;
1850 }
1851
1852 static struct format_field *
1853 find_common_field(struct event *event, const char *name)
1854 {
1855         struct format_field *format;
1856
1857         for (format = event->format.common_fields;
1858              format; format = format->next) {
1859                 if (strcmp(format->name, name) == 0)
1860                         break;
1861         }
1862
1863         return format;
1864 }
1865
1866 static struct format_field *
1867 find_field(struct event *event, const char *name)
1868 {
1869         struct format_field *format;
1870
1871         for (format = event->format.fields;
1872              format; format = format->next) {
1873                 if (strcmp(format->name, name) == 0)
1874                         break;
1875         }
1876
1877         return format;
1878 }
1879
1880 static struct format_field *
1881 find_any_field(struct event *event, const char *name)
1882 {
1883         struct format_field *format;
1884
1885         format = find_common_field(event, name);
1886         if (format)
1887                 return format;
1888         return find_field(event, name);
1889 }
1890
1891 unsigned long long read_size(void *ptr, int size)
1892 {
1893         switch (size) {
1894         case 1:
1895                 return *(unsigned char *)ptr;
1896         case 2:
1897                 return data2host2(ptr);
1898         case 4:
1899                 return data2host4(ptr);
1900         case 8:
1901                 return data2host8(ptr);
1902         default:
1903                 /* BUG! */
1904                 return 0;
1905         }
1906 }
1907
1908 unsigned long long
1909 raw_field_value(struct event *event, const char *name, void *data)
1910 {
1911         struct format_field *field;
1912
1913         field = find_any_field(event, name);
1914         if (!field)
1915                 return 0ULL;
1916
1917         return read_size(data + field->offset, field->size);
1918 }
1919
1920 void *raw_field_ptr(struct event *event, const char *name, void *data)
1921 {
1922         struct format_field *field;
1923
1924         field = find_any_field(event, name);
1925         if (!field)
1926                 return NULL;
1927
1928         return data + field->offset;
1929 }
1930
1931 static int get_common_info(const char *type, int *offset, int *size)
1932 {
1933         struct event *event;
1934         struct format_field *field;
1935
1936         /*
1937          * All events should have the same common elements.
1938          * Pick any event to find where the type is;
1939          */
1940         if (!event_list)
1941                 die("no event_list!");
1942
1943         event = event_list;
1944         field = find_common_field(event, type);
1945         if (!field)
1946                 die("field '%s' not found", type);
1947
1948         *offset = field->offset;
1949         *size = field->size;
1950
1951         return 0;
1952 }
1953
1954 static int __parse_common(void *data, int *size, int *offset,
1955                           const char *name)
1956 {
1957         int ret;
1958
1959         if (!*size) {
1960                 ret = get_common_info(name, offset, size);
1961                 if (ret < 0)
1962                         return ret;
1963         }
1964         return read_size(data + *offset, *size);
1965 }
1966
1967 int trace_parse_common_type(void *data)
1968 {
1969         static int type_offset;
1970         static int type_size;
1971
1972         return __parse_common(data, &type_size, &type_offset,
1973                               "common_type");
1974 }
1975
1976 int trace_parse_common_pid(void *data)
1977 {
1978         static int pid_offset;
1979         static int pid_size;
1980
1981         return __parse_common(data, &pid_size, &pid_offset,
1982                               "common_pid");
1983 }
1984
1985 int parse_common_pc(void *data)
1986 {
1987         static int pc_offset;
1988         static int pc_size;
1989
1990         return __parse_common(data, &pc_size, &pc_offset,
1991                               "common_preempt_count");
1992 }
1993
1994 int parse_common_flags(void *data)
1995 {
1996         static int flags_offset;
1997         static int flags_size;
1998
1999         return __parse_common(data, &flags_size, &flags_offset,
2000                               "common_flags");
2001 }
2002
2003 int parse_common_lock_depth(void *data)
2004 {
2005         static int ld_offset;
2006         static int ld_size;
2007         int ret;
2008
2009         ret = __parse_common(data, &ld_size, &ld_offset,
2010                              "common_lock_depth");
2011         if (ret < 0)
2012                 return -1;
2013
2014         return ret;
2015 }
2016
2017 struct event *trace_find_event(int id)
2018 {
2019         struct event *event;
2020
2021         for (event = event_list; event; event = event->next) {
2022                 if (event->id == id)
2023                         break;
2024         }
2025         return event;
2026 }
2027
2028 struct event *trace_find_next_event(struct event *event)
2029 {
2030         if (!event)
2031                 return event_list;
2032
2033         return event->next;
2034 }
2035
2036 static unsigned long long eval_num_arg(void *data, int size,
2037                                    struct event *event, struct print_arg *arg)
2038 {
2039         unsigned long long val = 0;
2040         unsigned long long left, right;
2041         struct print_arg *larg;
2042
2043         switch (arg->type) {
2044         case PRINT_NULL:
2045                 /* ?? */
2046                 return 0;
2047         case PRINT_ATOM:
2048                 return strtoull(arg->atom.atom, NULL, 0);
2049         case PRINT_FIELD:
2050                 if (!arg->field.field) {
2051                         arg->field.field = find_any_field(event, arg->field.name);
2052                         if (!arg->field.field)
2053                                 die("field %s not found", arg->field.name);
2054                 }
2055                 /* must be a number */
2056                 val = read_size(data + arg->field.field->offset,
2057                                 arg->field.field->size);
2058                 break;
2059         case PRINT_FLAGS:
2060         case PRINT_SYMBOL:
2061                 break;
2062         case PRINT_TYPE:
2063                 return eval_num_arg(data, size, event, arg->typecast.item);
2064         case PRINT_STRING:
2065                 return 0;
2066                 break;
2067         case PRINT_OP:
2068                 if (strcmp(arg->op.op, "[") == 0) {
2069                         /*
2070                          * Arrays are special, since we don't want
2071                          * to read the arg as is.
2072                          */
2073                         if (arg->op.left->type != PRINT_FIELD)
2074                                 goto default_op; /* oops, all bets off */
2075                         larg = arg->op.left;
2076                         if (!larg->field.field) {
2077                                 larg->field.field =
2078                                         find_any_field(event, larg->field.name);
2079                                 if (!larg->field.field)
2080                                         die("field %s not found", larg->field.name);
2081                         }
2082                         right = eval_num_arg(data, size, event, arg->op.right);
2083                         val = read_size(data + larg->field.field->offset +
2084                                         right * long_size, long_size);
2085                         break;
2086                 }
2087  default_op:
2088                 left = eval_num_arg(data, size, event, arg->op.left);
2089                 right = eval_num_arg(data, size, event, arg->op.right);
2090                 switch (arg->op.op[0]) {
2091                 case '|':
2092                         if (arg->op.op[1])
2093                                 val = left || right;
2094                         else
2095                                 val = left | right;
2096                         break;
2097                 case '&':
2098                         if (arg->op.op[1])
2099                                 val = left && right;
2100                         else
2101                                 val = left & right;
2102                         break;
2103                 case '<':
2104                         switch (arg->op.op[1]) {
2105                         case 0:
2106                                 val = left < right;
2107                                 break;
2108                         case '<':
2109                                 val = left << right;
2110                                 break;
2111                         case '=':
2112                                 val = left <= right;
2113                                 break;
2114                         default:
2115                                 die("unknown op '%s'", arg->op.op);
2116                         }
2117                         break;
2118                 case '>':
2119                         switch (arg->op.op[1]) {
2120                         case 0:
2121                                 val = left > right;
2122                                 break;
2123                         case '>':
2124                                 val = left >> right;
2125                                 break;
2126                         case '=':
2127                                 val = left >= right;
2128                                 break;
2129                         default:
2130                                 die("unknown op '%s'", arg->op.op);
2131                         }
2132                         break;
2133                 case '=':
2134                         if (arg->op.op[1] != '=')
2135                                 die("unknown op '%s'", arg->op.op);
2136                         val = left == right;
2137                         break;
2138                 case '-':
2139                         val = left - right;
2140                         break;
2141                 case '+':
2142                         val = left + right;
2143                         break;
2144                 default:
2145                         die("unknown op '%s'", arg->op.op);
2146                 }
2147                 break;
2148         default: /* not sure what to do there */
2149                 return 0;
2150         }
2151         return val;
2152 }
2153
2154 struct flag {
2155         const char *name;
2156         unsigned long long value;
2157 };
2158
2159 static const struct flag flags[] = {
2160         { "HI_SOFTIRQ", 0 },
2161         { "TIMER_SOFTIRQ", 1 },
2162         { "NET_TX_SOFTIRQ", 2 },
2163         { "NET_RX_SOFTIRQ", 3 },
2164         { "BLOCK_SOFTIRQ", 4 },
2165         { "BLOCK_IOPOLL_SOFTIRQ", 5 },
2166         { "TASKLET_SOFTIRQ", 6 },
2167         { "SCHED_SOFTIRQ", 7 },
2168         { "HRTIMER_SOFTIRQ", 8 },
2169         { "RCU_SOFTIRQ", 9 },
2170
2171         { "HRTIMER_NORESTART", 0 },
2172         { "HRTIMER_RESTART", 1 },
2173 };
2174
2175 unsigned long long eval_flag(const char *flag)
2176 {
2177         int i;
2178
2179         /*
2180          * Some flags in the format files do not get converted.
2181          * If the flag is not numeric, see if it is something that
2182          * we already know about.
2183          */
2184         if (isdigit(flag[0]))
2185                 return strtoull(flag, NULL, 0);
2186
2187         for (i = 0; i < (int)(sizeof(flags)/sizeof(flags[0])); i++)
2188                 if (strcmp(flags[i].name, flag) == 0)
2189                         return flags[i].value;
2190
2191         return 0;
2192 }
2193
2194 static void print_str_arg(void *data, int size,
2195                           struct event *event, struct print_arg *arg)
2196 {
2197         struct print_flag_sym *flag;
2198         unsigned long long val, fval;
2199         char *str;
2200         int print;
2201
2202         switch (arg->type) {
2203         case PRINT_NULL:
2204                 /* ?? */
2205                 return;
2206         case PRINT_ATOM:
2207                 printf("%s", arg->atom.atom);
2208                 return;
2209         case PRINT_FIELD:
2210                 if (!arg->field.field) {
2211                         arg->field.field = find_any_field(event, arg->field.name);
2212                         if (!arg->field.field)
2213                                 die("field %s not found", arg->field.name);
2214                 }
2215                 str = malloc_or_die(arg->field.field->size + 1);
2216                 memcpy(str, data + arg->field.field->offset,
2217                        arg->field.field->size);
2218                 str[arg->field.field->size] = 0;
2219                 printf("%s", str);
2220                 free(str);
2221                 break;
2222         case PRINT_FLAGS:
2223                 val = eval_num_arg(data, size, event, arg->flags.field);
2224                 print = 0;
2225                 for (flag = arg->flags.flags; flag; flag = flag->next) {
2226                         fval = eval_flag(flag->value);
2227                         if (!val && !fval) {
2228                                 printf("%s", flag->str);
2229                                 break;
2230                         }
2231                         if (fval && (val & fval) == fval) {
2232                                 if (print && arg->flags.delim)
2233                                         printf("%s", arg->flags.delim);
2234                                 printf("%s", flag->str);
2235                                 print = 1;
2236                                 val &= ~fval;
2237                         }
2238                 }
2239                 break;
2240         case PRINT_SYMBOL:
2241                 val = eval_num_arg(data, size, event, arg->symbol.field);
2242                 for (flag = arg->symbol.symbols; flag; flag = flag->next) {
2243                         fval = eval_flag(flag->value);
2244                         if (val == fval) {
2245                                 printf("%s", flag->str);
2246                                 break;
2247                         }
2248                 }
2249                 break;
2250
2251         case PRINT_TYPE:
2252                 break;
2253         case PRINT_STRING: {
2254                 int str_offset;
2255
2256                 if (arg->string.offset == -1) {
2257                         struct format_field *f;
2258
2259                         f = find_any_field(event, arg->string.string);
2260                         arg->string.offset = f->offset;
2261                 }
2262                 str_offset = *(int *)(data + arg->string.offset);
2263                 str_offset &= 0xffff;
2264                 printf("%s", ((char *)data) + str_offset);
2265                 break;
2266         }
2267         case PRINT_OP:
2268                 /*
2269                  * The only op for string should be ? :
2270                  */
2271                 if (arg->op.op[0] != '?')
2272                         return;
2273                 val = eval_num_arg(data, size, event, arg->op.left);
2274                 if (val)
2275                         print_str_arg(data, size, event, arg->op.right->op.left);
2276                 else
2277                         print_str_arg(data, size, event, arg->op.right->op.right);
2278                 break;
2279         default:
2280                 /* well... */
2281                 break;
2282         }
2283 }
2284
2285 static struct print_arg *make_bprint_args(char *fmt, void *data, int size, struct event *event)
2286 {
2287         static struct format_field *field, *ip_field;
2288         struct print_arg *args, *arg, **next;
2289         unsigned long long ip, val;
2290         char *ptr;
2291         void *bptr;
2292
2293         if (!field) {
2294                 field = find_field(event, "buf");
2295                 if (!field)
2296                         die("can't find buffer field for binary printk");
2297                 ip_field = find_field(event, "ip");
2298                 if (!ip_field)
2299                         die("can't find ip field for binary printk");
2300         }
2301
2302         ip = read_size(data + ip_field->offset, ip_field->size);
2303
2304         /*
2305          * The first arg is the IP pointer.
2306          */
2307         args = malloc_or_die(sizeof(*args));
2308         arg = args;
2309         arg->next = NULL;
2310         next = &arg->next;
2311
2312         arg->type = PRINT_ATOM;
2313         arg->atom.atom = malloc_or_die(32);
2314         sprintf(arg->atom.atom, "%lld", ip);
2315
2316         /* skip the first "%pf : " */
2317         for (ptr = fmt + 6, bptr = data + field->offset;
2318              bptr < data + size && *ptr; ptr++) {
2319                 int ls = 0;
2320
2321                 if (*ptr == '%') {
2322  process_again:
2323                         ptr++;
2324                         switch (*ptr) {
2325                         case '%':
2326                                 break;
2327                         case 'l':
2328                                 ls++;
2329                                 goto process_again;
2330                         case 'L':
2331                                 ls = 2;
2332                                 goto process_again;
2333                         case '0' ... '9':
2334                                 goto process_again;
2335                         case 'p':
2336                                 ls = 1;
2337                                 /* fall through */
2338                         case 'd':
2339                         case 'u':
2340                         case 'x':
2341                         case 'i':
2342                                 /* the pointers are always 4 bytes aligned */
2343                                 bptr = (void *)(((unsigned long)bptr + 3) &
2344                                                 ~3);
2345                                 switch (ls) {
2346                                 case 0:
2347                                 case 1:
2348                                         ls = long_size;
2349                                         break;
2350                                 case 2:
2351                                         ls = 8;
2352                                 default:
2353                                         break;
2354                                 }
2355                                 val = read_size(bptr, ls);
2356                                 bptr += ls;
2357                                 arg = malloc_or_die(sizeof(*arg));
2358                                 arg->next = NULL;
2359                                 arg->type = PRINT_ATOM;
2360                                 arg->atom.atom = malloc_or_die(32);
2361                                 sprintf(arg->atom.atom, "%lld", val);
2362                                 *next = arg;
2363                                 next = &arg->next;
2364                                 break;
2365                         case 's':
2366                                 arg = malloc_or_die(sizeof(*arg));
2367                                 arg->next = NULL;
2368                                 arg->type = PRINT_STRING;
2369                                 arg->string.string = strdup(bptr);
2370                                 bptr += strlen(bptr) + 1;
2371                                 *next = arg;
2372                                 next = &arg->next;
2373                         default:
2374                                 break;
2375                         }
2376                 }
2377         }
2378
2379         return args;
2380 }
2381
2382 static void free_args(struct print_arg *args)
2383 {
2384         struct print_arg *next;
2385
2386         while (args) {
2387                 next = args->next;
2388
2389                 if (args->type == PRINT_ATOM)
2390                         free(args->atom.atom);
2391                 else
2392                         free(args->string.string);
2393                 free(args);
2394                 args = next;
2395         }
2396 }
2397
2398 static char *get_bprint_format(void *data, int size __unused, struct event *event)
2399 {
2400         unsigned long long addr;
2401         static struct format_field *field;
2402         struct printk_map *printk;
2403         char *format;
2404         char *p;
2405
2406         if (!field) {
2407                 field = find_field(event, "fmt");
2408                 if (!field)
2409                         die("can't find format field for binary printk");
2410                 printf("field->offset = %d size=%d\n", field->offset, field->size);
2411         }
2412
2413         addr = read_size(data + field->offset, field->size);
2414
2415         printk = find_printk(addr);
2416         if (!printk) {
2417                 format = malloc_or_die(45);
2418                 sprintf(format, "%%pf : (NO FORMAT FOUND at %llx)\n",
2419                         addr);
2420                 return format;
2421         }
2422
2423         p = printk->printk;
2424         /* Remove any quotes. */
2425         if (*p == '"')
2426                 p++;
2427         format = malloc_or_die(strlen(p) + 10);
2428         sprintf(format, "%s : %s", "%pf", p);
2429         /* remove ending quotes and new line since we will add one too */
2430         p = format + strlen(format) - 1;
2431         if (*p == '"')
2432                 *p = 0;
2433
2434         p -= 2;
2435         if (strcmp(p, "\\n") == 0)
2436                 *p = 0;
2437
2438         return format;
2439 }
2440
2441 static void pretty_print(void *data, int size, struct event *event)
2442 {
2443         struct print_fmt *print_fmt = &event->print_fmt;
2444         struct print_arg *arg = print_fmt->args;
2445         struct print_arg *args = NULL;
2446         const char *ptr = print_fmt->format;
2447         unsigned long long val;
2448         struct func_map *func;
2449         const char *saveptr;
2450         char *bprint_fmt = NULL;
2451         char format[32];
2452         int show_func;
2453         int len;
2454         int ls;
2455
2456         if (event->flags & EVENT_FL_ISFUNC)
2457                 ptr = " %pF <-- %pF";
2458
2459         if (event->flags & EVENT_FL_ISBPRINT) {
2460                 bprint_fmt = get_bprint_format(data, size, event);
2461                 args = make_bprint_args(bprint_fmt, data, size, event);
2462                 arg = args;
2463                 ptr = bprint_fmt;
2464         }
2465
2466         for (; *ptr; ptr++) {
2467                 ls = 0;
2468                 if (*ptr == '\\') {
2469                         ptr++;
2470                         switch (*ptr) {
2471                         case 'n':
2472                                 printf("\n");
2473                                 break;
2474                         case 't':
2475                                 printf("\t");
2476                                 break;
2477                         case 'r':
2478                                 printf("\r");
2479                                 break;
2480                         case '\\':
2481                                 printf("\\");
2482                                 break;
2483                         default:
2484                                 printf("%c", *ptr);
2485                                 break;
2486                         }
2487
2488                 } else if (*ptr == '%') {
2489                         saveptr = ptr;
2490                         show_func = 0;
2491  cont_process:
2492                         ptr++;
2493                         switch (*ptr) {
2494                         case '%':
2495                                 printf("%%");
2496                                 break;
2497                         case 'l':
2498                                 ls++;
2499                                 goto cont_process;
2500                         case 'L':
2501                                 ls = 2;
2502                                 goto cont_process;
2503                         case 'z':
2504                         case 'Z':
2505                         case '0' ... '9':
2506                                 goto cont_process;
2507                         case 'p':
2508                                 if (long_size == 4)
2509                                         ls = 1;
2510                                 else
2511                                         ls = 2;
2512
2513                                 if (*(ptr+1) == 'F' ||
2514                                     *(ptr+1) == 'f') {
2515                                         ptr++;
2516                                         show_func = *ptr;
2517                                 }
2518
2519                                 /* fall through */
2520                         case 'd':
2521                         case 'i':
2522                         case 'x':
2523                         case 'X':
2524                         case 'u':
2525                                 if (!arg)
2526                                         die("no argument match");
2527
2528                                 len = ((unsigned long)ptr + 1) -
2529                                         (unsigned long)saveptr;
2530
2531                                 /* should never happen */
2532                                 if (len > 32)
2533                                         die("bad format!");
2534
2535                                 memcpy(format, saveptr, len);
2536                                 format[len] = 0;
2537
2538                                 val = eval_num_arg(data, size, event, arg);
2539                                 arg = arg->next;
2540
2541                                 if (show_func) {
2542                                         func = find_func(val);
2543                                         if (func) {
2544                                                 printf("%s", func->func);
2545                                                 if (show_func == 'F')
2546                                                         printf("+0x%llx",
2547                                                                val - func->addr);
2548                                                 break;
2549                                         }
2550                                 }
2551                                 switch (ls) {
2552                                 case 0:
2553                                         printf(format, (int)val);
2554                                         break;
2555                                 case 1:
2556                                         printf(format, (long)val);
2557                                         break;
2558                                 case 2:
2559                                         printf(format, (long long)val);
2560                                         break;
2561                                 default:
2562                                         die("bad count (%d)", ls);
2563                                 }
2564                                 break;
2565                         case 's':
2566                                 if (!arg)
2567                                         die("no matching argument");
2568
2569                                 print_str_arg(data, size, event, arg);
2570                                 arg = arg->next;
2571                                 break;
2572                         default:
2573                                 printf(">%c<", *ptr);
2574
2575                         }
2576                 } else
2577                         printf("%c", *ptr);
2578         }
2579
2580         if (args) {
2581                 free_args(args);
2582                 free(bprint_fmt);
2583         }
2584 }
2585
2586 static inline int log10_cpu(int nb)
2587 {
2588         if (nb / 100)
2589                 return 3;
2590         if (nb / 10)
2591                 return 2;
2592         return 1;
2593 }
2594
2595 static void print_lat_fmt(void *data, int size __unused)
2596 {
2597         unsigned int lat_flags;
2598         unsigned int pc;
2599         int lock_depth;
2600         int hardirq;
2601         int softirq;
2602
2603         lat_flags = parse_common_flags(data);
2604         pc = parse_common_pc(data);
2605         lock_depth = parse_common_lock_depth(data);
2606
2607         hardirq = lat_flags & TRACE_FLAG_HARDIRQ;
2608         softirq = lat_flags & TRACE_FLAG_SOFTIRQ;
2609
2610         printf("%c%c%c",
2611                (lat_flags & TRACE_FLAG_IRQS_OFF) ? 'd' :
2612                (lat_flags & TRACE_FLAG_IRQS_NOSUPPORT) ?
2613                'X' : '.',
2614                (lat_flags & TRACE_FLAG_NEED_RESCHED) ?
2615                'N' : '.',
2616                (hardirq && softirq) ? 'H' :
2617                hardirq ? 'h' : softirq ? 's' : '.');
2618
2619         if (pc)
2620                 printf("%x", pc);
2621         else
2622                 printf(".");
2623
2624         if (lock_depth < 0)
2625                 printf(".");
2626         else
2627                 printf("%d", lock_depth);
2628 }
2629
2630 /* taken from Linux, written by Frederic Weisbecker */
2631 static void print_graph_cpu(int cpu)
2632 {
2633         int i;
2634         int log10_this = log10_cpu(cpu);
2635         int log10_all = log10_cpu(cpus);
2636
2637
2638         /*
2639          * Start with a space character - to make it stand out
2640          * to the right a bit when trace output is pasted into
2641          * email:
2642          */
2643         printf(" ");
2644
2645         /*
2646          * Tricky - we space the CPU field according to the max
2647          * number of online CPUs. On a 2-cpu system it would take
2648          * a maximum of 1 digit - on a 128 cpu system it would
2649          * take up to 3 digits:
2650          */
2651         for (i = 0; i < log10_all - log10_this; i++)
2652                 printf(" ");
2653
2654         printf("%d) ", cpu);
2655 }
2656
2657 #define TRACE_GRAPH_PROCINFO_LENGTH     14
2658 #define TRACE_GRAPH_INDENT      2
2659
2660 static void print_graph_proc(int pid, const char *comm)
2661 {
2662         /* sign + log10(MAX_INT) + '\0' */
2663         char pid_str[11];
2664         int spaces = 0;
2665         int len;
2666         int i;
2667
2668         sprintf(pid_str, "%d", pid);
2669
2670         /* 1 stands for the "-" character */
2671         len = strlen(comm) + strlen(pid_str) + 1;
2672
2673         if (len < TRACE_GRAPH_PROCINFO_LENGTH)
2674                 spaces = TRACE_GRAPH_PROCINFO_LENGTH - len;
2675
2676         /* First spaces to align center */
2677         for (i = 0; i < spaces / 2; i++)
2678                 printf(" ");
2679
2680         printf("%s-%s", comm, pid_str);
2681
2682         /* Last spaces to align center */
2683         for (i = 0; i < spaces - (spaces / 2); i++)
2684                 printf(" ");
2685 }
2686
2687 static struct record *
2688 get_return_for_leaf(int cpu, int cur_pid, unsigned long long cur_func,
2689                     struct record *next)
2690 {
2691         struct format_field *field;
2692         struct event *event;
2693         unsigned long val;
2694         int type;
2695         int pid;
2696
2697         type = trace_parse_common_type(next->data);
2698         event = trace_find_event(type);
2699         if (!event)
2700                 return NULL;
2701
2702         if (!(event->flags & EVENT_FL_ISFUNCRET))
2703                 return NULL;
2704
2705         pid = trace_parse_common_pid(next->data);
2706         field = find_field(event, "func");
2707         if (!field)
2708                 die("function return does not have field func");
2709
2710         val = read_size(next->data + field->offset, field->size);
2711
2712         if (cur_pid != pid || cur_func != val)
2713                 return NULL;
2714
2715         /* this is a leaf, now advance the iterator */
2716         return trace_read_data(cpu);
2717 }
2718
2719 /* Signal a overhead of time execution to the output */
2720 static void print_graph_overhead(unsigned long long duration)
2721 {
2722         /* Non nested entry or return */
2723         if (duration == ~0ULL)
2724                 return (void)printf("  ");
2725
2726         /* Duration exceeded 100 msecs */
2727         if (duration > 100000ULL)
2728                 return (void)printf("! ");
2729
2730         /* Duration exceeded 10 msecs */
2731         if (duration > 10000ULL)
2732                 return (void)printf("+ ");
2733
2734         printf("  ");
2735 }
2736
2737 static void print_graph_duration(unsigned long long duration)
2738 {
2739         unsigned long usecs = duration / 1000;
2740         unsigned long nsecs_rem = duration % 1000;
2741         /* log10(ULONG_MAX) + '\0' */
2742         char msecs_str[21];
2743         char nsecs_str[5];
2744         int len;
2745         int i;
2746
2747         sprintf(msecs_str, "%lu", usecs);
2748
2749         /* Print msecs */
2750         len = printf("%lu", usecs);
2751
2752         /* Print nsecs (we don't want to exceed 7 numbers) */
2753         if (len < 7) {
2754                 snprintf(nsecs_str, 8 - len, "%03lu", nsecs_rem);
2755                 len += printf(".%s", nsecs_str);
2756         }
2757
2758         printf(" us ");
2759
2760         /* Print remaining spaces to fit the row's width */
2761         for (i = len; i < 7; i++)
2762                 printf(" ");
2763
2764         printf("|  ");
2765 }
2766
2767 static void
2768 print_graph_entry_leaf(struct event *event, void *data, struct record *ret_rec)
2769 {
2770         unsigned long long rettime, calltime;
2771         unsigned long long duration, depth;
2772         unsigned long long val;
2773         struct format_field *field;
2774         struct func_map *func;
2775         struct event *ret_event;
2776         int type;
2777         int i;
2778
2779         type = trace_parse_common_type(ret_rec->data);
2780         ret_event = trace_find_event(type);
2781
2782         field = find_field(ret_event, "rettime");
2783         if (!field)
2784                 die("can't find rettime in return graph");
2785         rettime = read_size(ret_rec->data + field->offset, field->size);
2786
2787         field = find_field(ret_event, "calltime");
2788         if (!field)
2789                 die("can't find rettime in return graph");
2790         calltime = read_size(ret_rec->data + field->offset, field->size);
2791
2792         duration = rettime - calltime;
2793
2794         /* Overhead */
2795         print_graph_overhead(duration);
2796
2797         /* Duration */
2798         print_graph_duration(duration);
2799
2800         field = find_field(event, "depth");
2801         if (!field)
2802                 die("can't find depth in entry graph");
2803         depth = read_size(data + field->offset, field->size);
2804
2805         /* Function */
2806         for (i = 0; i < (int)(depth * TRACE_GRAPH_INDENT); i++)
2807                 printf(" ");
2808
2809         field = find_field(event, "func");
2810         if (!field)
2811                 die("can't find func in entry graph");
2812         val = read_size(data + field->offset, field->size);
2813         func = find_func(val);
2814
2815         if (func)
2816                 printf("%s();", func->func);
2817         else
2818                 printf("%llx();", val);
2819 }
2820
2821 static void print_graph_nested(struct event *event, void *data)
2822 {
2823         struct format_field *field;
2824         unsigned long long depth;
2825         unsigned long long val;
2826         struct func_map *func;
2827         int i;
2828
2829         /* No overhead */
2830         print_graph_overhead(-1);
2831
2832         /* No time */
2833         printf("           |  ");
2834
2835         field = find_field(event, "depth");
2836         if (!field)
2837                 die("can't find depth in entry graph");
2838         depth = read_size(data + field->offset, field->size);
2839
2840         /* Function */
2841         for (i = 0; i < (int)(depth * TRACE_GRAPH_INDENT); i++)
2842                 printf(" ");
2843
2844         field = find_field(event, "func");
2845         if (!field)
2846                 die("can't find func in entry graph");
2847         val = read_size(data + field->offset, field->size);
2848         func = find_func(val);
2849
2850         if (func)
2851                 printf("%s() {", func->func);
2852         else
2853                 printf("%llx() {", val);
2854 }
2855
2856 static void
2857 pretty_print_func_ent(void *data, int size, struct event *event,
2858                       int cpu, int pid, const char *comm,
2859                       unsigned long secs, unsigned long usecs)
2860 {
2861         struct format_field *field;
2862         struct record *rec;
2863         void *copy_data;
2864         unsigned long val;
2865
2866         printf("%5lu.%06lu |  ", secs, usecs);
2867
2868         print_graph_cpu(cpu);
2869         print_graph_proc(pid, comm);
2870
2871         printf(" | ");
2872
2873         if (latency_format) {
2874                 print_lat_fmt(data, size);
2875                 printf(" | ");
2876         }
2877
2878         field = find_field(event, "func");
2879         if (!field)
2880                 die("function entry does not have func field");
2881
2882         val = read_size(data + field->offset, field->size);
2883
2884         /*
2885          * peek_data may unmap the data pointer. Copy it first.
2886          */
2887         copy_data = malloc_or_die(size);
2888         memcpy(copy_data, data, size);
2889         data = copy_data;
2890
2891         rec = trace_peek_data(cpu);
2892         if (rec) {
2893                 rec = get_return_for_leaf(cpu, pid, val, rec);
2894                 if (rec) {
2895                         print_graph_entry_leaf(event, data, rec);
2896                         goto out_free;
2897                 }
2898         }
2899         print_graph_nested(event, data);
2900 out_free:
2901         free(data);
2902 }
2903
2904 static void
2905 pretty_print_func_ret(void *data, int size __unused, struct event *event,
2906                       int cpu, int pid, const char *comm,
2907                       unsigned long secs, unsigned long usecs)
2908 {
2909         unsigned long long rettime, calltime;
2910         unsigned long long duration, depth;
2911         struct format_field *field;
2912         int i;
2913
2914         printf("%5lu.%06lu |  ", secs, usecs);
2915
2916         print_graph_cpu(cpu);
2917         print_graph_proc(pid, comm);
2918
2919         printf(" | ");
2920
2921         if (latency_format) {
2922                 print_lat_fmt(data, size);
2923                 printf(" | ");
2924         }
2925
2926         field = find_field(event, "rettime");
2927         if (!field)
2928                 die("can't find rettime in return graph");
2929         rettime = read_size(data + field->offset, field->size);
2930
2931         field = find_field(event, "calltime");
2932         if (!field)
2933                 die("can't find calltime in return graph");
2934         calltime = read_size(data + field->offset, field->size);
2935
2936         duration = rettime - calltime;
2937
2938         /* Overhead */
2939         print_graph_overhead(duration);
2940
2941         /* Duration */
2942         print_graph_duration(duration);
2943
2944         field = find_field(event, "depth");
2945         if (!field)
2946                 die("can't find depth in entry graph");
2947         depth = read_size(data + field->offset, field->size);
2948
2949         /* Function */
2950         for (i = 0; i < (int)(depth * TRACE_GRAPH_INDENT); i++)
2951                 printf(" ");
2952
2953         printf("}");
2954 }
2955
2956 static void
2957 pretty_print_func_graph(void *data, int size, struct event *event,
2958                         int cpu, int pid, const char *comm,
2959                         unsigned long secs, unsigned long usecs)
2960 {
2961         if (event->flags & EVENT_FL_ISFUNCENT)
2962                 pretty_print_func_ent(data, size, event,
2963                                       cpu, pid, comm, secs, usecs);
2964         else if (event->flags & EVENT_FL_ISFUNCRET)
2965                 pretty_print_func_ret(data, size, event,
2966                                       cpu, pid, comm, secs, usecs);
2967         printf("\n");
2968 }
2969
2970 void print_event(int cpu, void *data, int size, unsigned long long nsecs,
2971                   char *comm)
2972 {
2973         struct event *event;
2974         unsigned long secs;
2975         unsigned long usecs;
2976         int type;
2977         int pid;
2978
2979         secs = nsecs / NSECS_PER_SEC;
2980         nsecs -= secs * NSECS_PER_SEC;
2981         usecs = nsecs / NSECS_PER_USEC;
2982
2983         type = trace_parse_common_type(data);
2984
2985         event = trace_find_event(type);
2986         if (!event) {
2987                 warning("ug! no event found for type %d", type);
2988                 return;
2989         }
2990
2991         pid = trace_parse_common_pid(data);
2992
2993         if (event->flags & (EVENT_FL_ISFUNCENT | EVENT_FL_ISFUNCRET))
2994                 return pretty_print_func_graph(data, size, event, cpu,
2995                                                pid, comm, secs, usecs);
2996
2997         if (latency_format) {
2998                 printf("%8.8s-%-5d %3d",
2999                        comm, pid, cpu);
3000                 print_lat_fmt(data, size);
3001         } else
3002                 printf("%16s-%-5d [%03d]", comm, pid,  cpu);
3003
3004         printf(" %5lu.%06lu: %s: ", secs, usecs, event->name);
3005
3006         if (event->flags & EVENT_FL_FAILED) {
3007                 printf("EVENT '%s' FAILED TO PARSE\n",
3008                        event->name);
3009                 return;
3010         }
3011
3012         pretty_print(data, size, event);
3013         printf("\n");
3014 }
3015
3016 static void print_fields(struct print_flag_sym *field)
3017 {
3018         printf("{ %s, %s }", field->value, field->str);
3019         if (field->next) {
3020                 printf(", ");
3021                 print_fields(field->next);
3022         }
3023 }
3024
3025 static void print_args(struct print_arg *args)
3026 {
3027         int print_paren = 1;
3028
3029         switch (args->type) {
3030         case PRINT_NULL:
3031                 printf("null");
3032                 break;
3033         case PRINT_ATOM:
3034                 printf("%s", args->atom.atom);
3035                 break;
3036         case PRINT_FIELD:
3037                 printf("REC->%s", args->field.name);
3038                 break;
3039         case PRINT_FLAGS:
3040                 printf("__print_flags(");
3041                 print_args(args->flags.field);
3042                 printf(", %s, ", args->flags.delim);
3043                 print_fields(args->flags.flags);
3044                 printf(")");
3045                 break;
3046         case PRINT_SYMBOL:
3047                 printf("__print_symbolic(");
3048                 print_args(args->symbol.field);
3049                 printf(", ");
3050                 print_fields(args->symbol.symbols);
3051                 printf(")");
3052                 break;
3053         case PRINT_STRING:
3054                 printf("__get_str(%s)", args->string.string);
3055                 break;
3056         case PRINT_TYPE:
3057                 printf("(%s)", args->typecast.type);
3058                 print_args(args->typecast.item);
3059                 break;
3060         case PRINT_OP:
3061                 if (strcmp(args->op.op, ":") == 0)
3062                         print_paren = 0;
3063                 if (print_paren)
3064                         printf("(");
3065                 print_args(args->op.left);
3066                 printf(" %s ", args->op.op);
3067                 print_args(args->op.right);
3068                 if (print_paren)
3069                         printf(")");
3070                 break;
3071         default:
3072                 /* we should warn... */
3073                 return;
3074         }
3075         if (args->next) {
3076                 printf("\n");
3077                 print_args(args->next);
3078         }
3079 }
3080
3081 static void parse_header_field(const char *field,
3082                                int *offset, int *size)
3083 {
3084         char *token;
3085         int type;
3086
3087         if (read_expected(EVENT_ITEM, "field") < 0)
3088                 return;
3089         if (read_expected(EVENT_OP, ":") < 0)
3090                 return;
3091
3092         /* type */
3093         if (read_expect_type(EVENT_ITEM, &token) < 0)
3094                 goto fail;
3095         free_token(token);
3096
3097         if (read_expected(EVENT_ITEM, field) < 0)
3098                 return;
3099         if (read_expected(EVENT_OP, ";") < 0)
3100                 return;
3101         if (read_expected(EVENT_ITEM, "offset") < 0)
3102                 return;
3103         if (read_expected(EVENT_OP, ":") < 0)
3104                 return;
3105         if (read_expect_type(EVENT_ITEM, &token) < 0)
3106                 goto fail;
3107         *offset = atoi(token);
3108         free_token(token);
3109         if (read_expected(EVENT_OP, ";") < 0)
3110                 return;
3111         if (read_expected(EVENT_ITEM, "size") < 0)
3112                 return;
3113         if (read_expected(EVENT_OP, ":") < 0)
3114                 return;
3115         if (read_expect_type(EVENT_ITEM, &token) < 0)
3116                 goto fail;
3117         *size = atoi(token);
3118         free_token(token);
3119         if (read_expected(EVENT_OP, ";") < 0)
3120                 return;
3121         type = read_token(&token);
3122         if (type != EVENT_NEWLINE) {
3123                 /* newer versions of the kernel have a "signed" type */
3124                 if (type != EVENT_ITEM)
3125                         goto fail;
3126
3127                 if (strcmp(token, "signed") != 0)
3128                         goto fail;
3129
3130                 free_token(token);
3131
3132                 if (read_expected(EVENT_OP, ":") < 0)
3133                         return;
3134
3135                 if (read_expect_type(EVENT_ITEM, &token))
3136                         goto fail;
3137
3138                 free_token(token);
3139                 if (read_expected(EVENT_OP, ";") < 0)
3140                         return;
3141
3142                 if (read_expect_type(EVENT_NEWLINE, &token))
3143                         goto fail;
3144         }
3145  fail:
3146         free_token(token);
3147 }
3148
3149 int parse_header_page(char *buf, unsigned long size)
3150 {
3151         init_input_buf(buf, size);
3152
3153         parse_header_field("timestamp", &header_page_ts_offset,
3154                            &header_page_ts_size);
3155         parse_header_field("commit", &header_page_size_offset,
3156                            &header_page_size_size);
3157         parse_header_field("data", &header_page_data_offset,
3158                            &header_page_data_size);
3159
3160         return 0;
3161 }
3162
3163 int parse_ftrace_file(char *buf, unsigned long size)
3164 {
3165         struct format_field *field;
3166         struct print_arg *arg, **list;
3167         struct event *event;
3168         int ret;
3169
3170         init_input_buf(buf, size);
3171
3172         event = alloc_event();
3173         if (!event)
3174                 return -ENOMEM;
3175
3176         event->flags |= EVENT_FL_ISFTRACE;
3177
3178         event->name = event_read_name();
3179         if (!event->name)
3180                 die("failed to read ftrace event name");
3181
3182         if (strcmp(event->name, "function") == 0)
3183                 event->flags |= EVENT_FL_ISFUNC;
3184
3185         else if (strcmp(event->name, "funcgraph_entry") == 0)
3186                 event->flags |= EVENT_FL_ISFUNCENT;
3187
3188         else if (strcmp(event->name, "funcgraph_exit") == 0)
3189                 event->flags |= EVENT_FL_ISFUNCRET;
3190
3191         else if (strcmp(event->name, "bprint") == 0)
3192                 event->flags |= EVENT_FL_ISBPRINT;
3193
3194         event->id = event_read_id();
3195         if (event->id < 0)
3196                 die("failed to read ftrace event id");
3197
3198         add_event(event);
3199
3200         ret = event_read_format(event);
3201         if (ret < 0)
3202                 die("failed to read ftrace event format");
3203
3204         ret = event_read_print(event);
3205         if (ret < 0)
3206                 die("failed to read ftrace event print fmt");
3207
3208         /* New ftrace handles args */
3209         if (ret > 0)
3210                 return 0;
3211         /*
3212          * The arguments for ftrace files are parsed by the fields.
3213          * Set up the fields as their arguments.
3214          */
3215         list = &event->print_fmt.args;
3216         for (field = event->format.fields; field; field = field->next) {
3217                 arg = malloc_or_die(sizeof(*arg));
3218                 memset(arg, 0, sizeof(*arg));
3219                 *list = arg;
3220                 list = &arg->next;
3221                 arg->type = PRINT_FIELD;
3222                 arg->field.name = field->name;
3223                 arg->field.field = field;
3224         }
3225         return 0;
3226 }
3227
3228 int parse_event_file(char *buf, unsigned long size, char *sys)
3229 {
3230         struct event *event;
3231         int ret;
3232
3233         init_input_buf(buf, size);
3234
3235         event = alloc_event();
3236         if (!event)
3237                 return -ENOMEM;
3238
3239         event->name = event_read_name();
3240         if (!event->name)
3241                 die("failed to read event name");
3242
3243         event->id = event_read_id();
3244         if (event->id < 0)
3245                 die("failed to read event id");
3246
3247         ret = event_read_format(event);
3248         if (ret < 0) {
3249                 warning("failed to read event format for %s", event->name);
3250                 goto event_failed;
3251         }
3252
3253         ret = event_read_print(event);
3254         if (ret < 0) {
3255                 warning("failed to read event print fmt for %s", event->name);
3256                 goto event_failed;
3257         }
3258
3259         event->system = strdup(sys);
3260
3261 #define PRINT_ARGS 0
3262         if (PRINT_ARGS && event->print_fmt.args)
3263                 print_args(event->print_fmt.args);
3264
3265         add_event(event);
3266         return 0;
3267
3268  event_failed:
3269         event->flags |= EVENT_FL_FAILED;
3270         /* still add it even if it failed */
3271         add_event(event);
3272         return -1;
3273 }
3274
3275 void parse_set_info(int nr_cpus, int long_sz)
3276 {
3277         cpus = nr_cpus;
3278         long_size = long_sz;
3279 }