size.c revision 275192
1/*- 2 * Copyright (c) 2007 S.Sam Arun Raj 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 */ 26 27#include <sys/cdefs.h> 28#include <assert.h> 29#include <err.h> 30#include <fcntl.h> 31#include <gelf.h> 32#include <getopt.h> 33#include <libelftc.h> 34#include <stdint.h> 35#include <stdio.h> 36#include <stdlib.h> 37#include <string.h> 38#include <unistd.h> 39 40#include "_elftc.h" 41 42ELFTC_VCSID("$Id: size.c 2350 2011-12-19 10:20:06Z jkoshy $"); 43 44#define BUF_SIZE 1024 45#define ELF_ALIGN(val,x) (((val)+(x)-1) & ~((x)-1)) 46#define SIZE_VERSION_STRING "size 1.0" 47 48enum return_code { 49 RETURN_OK, 50 RETURN_NOINPUT, 51 RETURN_DATAERR, 52 RETURN_USAGE 53}; 54 55enum output_style { 56 STYLE_BERKELEY, 57 STYLE_SYSV 58}; 59 60enum radix_style { 61 RADIX_OCTAL, 62 RADIX_DECIMAL, 63 RADIX_HEX 64}; 65 66static uint64_t bss_size, data_size, text_size, total_size; 67static uint64_t bss_size_total, data_size_total, text_size_total; 68static int show_totals; 69static int size_option; 70static enum radix_style radix = RADIX_DECIMAL; 71static enum output_style style = STYLE_BERKELEY; 72static const char *default_args[2] = { "a.out", NULL }; 73 74static struct { 75 int row; 76 int col; 77 int *width; 78 char ***tbl; 79} *tb; 80 81enum { 82 OPT_FORMAT, 83 OPT_RADIX 84}; 85 86static struct option size_longopts[] = { 87 { "format", required_argument, &size_option, OPT_FORMAT }, 88 { "help", no_argument, NULL, 'h' }, 89 { "radix", required_argument, &size_option, OPT_RADIX }, 90 { "totals", no_argument, NULL, 't' }, 91 { "version", no_argument, NULL, 'V' }, 92 { NULL, 0, NULL, 0 } 93}; 94 95static void berkeley_calc(GElf_Shdr *); 96static void berkeley_footer(const char *, const char *, const char *); 97static void berkeley_header(void); 98static void berkeley_totals(void); 99static int handle_core(char const *, Elf *elf, GElf_Ehdr *); 100static void handle_core_note(Elf *, GElf_Ehdr *, GElf_Phdr *, char **); 101static int handle_elf(char const *); 102static void handle_phdr(Elf *, GElf_Ehdr *, GElf_Phdr *, uint32_t, 103 const char *); 104static void show_version(void); 105static void sysv_header(const char *, Elf_Arhdr *); 106static void sysv_footer(void); 107static void sysv_calc(Elf *, GElf_Ehdr *, GElf_Shdr *); 108static void usage(void); 109static void tbl_new(int); 110static void tbl_print(const char *, int); 111static void tbl_print_num(uint64_t, enum radix_style, int); 112static void tbl_append(void); 113static void tbl_flush(void); 114 115/* 116 * size utility using elf(3) and gelf(3) API to list section sizes and 117 * total in elf files. Supports only elf files (core dumps in elf 118 * included) that can be opened by libelf, other formats are not supported. 119 */ 120int 121main(int argc, char **argv) 122{ 123 int ch, r, rc; 124 const char **files, *fn; 125 126 rc = RETURN_OK; 127 128 if (elf_version(EV_CURRENT) == EV_NONE) 129 errx(EXIT_FAILURE, "ELF library initialization failed: %s", 130 elf_errmsg(-1)); 131 132 while ((ch = getopt_long(argc, argv, "ABVdhotx", size_longopts, 133 NULL)) != -1) 134 switch((char)ch) { 135 case 'A': 136 style = STYLE_SYSV; 137 break; 138 case 'B': 139 style = STYLE_BERKELEY; 140 break; 141 case 'V': 142 show_version(); 143 break; 144 case 'd': 145 radix = RADIX_DECIMAL; 146 break; 147 case 'o': 148 radix = RADIX_OCTAL; 149 break; 150 case 't': 151 show_totals = 1; 152 break; 153 case 'x': 154 radix = RADIX_HEX; 155 break; 156 case 0: 157 switch (size_option) { 158 case OPT_FORMAT: 159 if (*optarg == 's' || *optarg == 'S') 160 style = STYLE_SYSV; 161 else if (*optarg == 'b' || *optarg == 'B') 162 style = STYLE_BERKELEY; 163 else { 164 warnx("unrecognized format \"%s\".", 165 optarg); 166 usage(); 167 } 168 break; 169 case OPT_RADIX: 170 r = strtol(optarg, NULL, 10); 171 if (r == 8) 172 radix = RADIX_OCTAL; 173 else if (r == 10) 174 radix = RADIX_DECIMAL; 175 else if (r == 16) 176 radix = RADIX_HEX; 177 else { 178 warnx("unsupported radix \"%s\".", 179 optarg); 180 usage(); 181 } 182 break; 183 default: 184 err(EXIT_FAILURE, "Error in option handling."); 185 /*NOTREACHED*/ 186 } 187 break; 188 case 'h': 189 case '?': 190 default: 191 usage(); 192 /* NOTREACHED */ 193 } 194 argc -= optind; 195 argv += optind; 196 197 files = (argc == 0) ? default_args : (void *) argv; 198 199 while ((fn = *files) != NULL) { 200 rc = handle_elf(fn); 201 if (rc != RETURN_OK) 202 warnx(rc == RETURN_NOINPUT ? 203 "'%s': No such file" : 204 "%s: File format not recognized", fn); 205 files++; 206 } 207 if (style == STYLE_BERKELEY) { 208 if (show_totals) 209 berkeley_totals(); 210 tbl_flush(); 211 } 212 return (rc); 213} 214 215static Elf_Data * 216xlatetom(Elf *elf, GElf_Ehdr *elfhdr, void *_src, void *_dst, 217 Elf_Type type, size_t size) 218{ 219 Elf_Data src, dst; 220 221 src.d_buf = _src; 222 src.d_type = type; 223 src.d_version = elfhdr->e_version; 224 src.d_size = size; 225 dst.d_buf = _dst; 226 dst.d_version = elfhdr->e_version; 227 dst.d_size = size; 228 return (gelf_xlatetom(elf, &dst, &src, elfhdr->e_ident[EI_DATA])); 229} 230 231#define NOTE_OFFSET_32(nhdr, namesz, offset) \ 232 ((char *)nhdr + sizeof(Elf32_Nhdr) + \ 233 ELF_ALIGN((int32_t)namesz, 4) + offset) 234 235#define NOTE_OFFSET_64(nhdr, namesz, offset) \ 236 ((char *)nhdr + sizeof(Elf32_Nhdr) + \ 237 ELF_ALIGN((int32_t)namesz, 8) + offset) 238 239#define PID32(nhdr, namesz, offset) \ 240 (pid_t)*((int *)((uintptr_t)NOTE_OFFSET_32(nhdr, \ 241 namesz, offset))); 242 243#define PID64(nhdr, namesz, offset) \ 244 (pid_t)*((int *)((uintptr_t)NOTE_OFFSET_64(nhdr, \ 245 namesz, offset))); 246 247#define NEXT_NOTE(elfhdr, descsz, namesz, offset) do { \ 248 if (elfhdr->e_ident[EI_CLASS] == ELFCLASS32) { \ 249 offset += ELF_ALIGN((int32_t)descsz, 4) + \ 250 sizeof(Elf32_Nhdr) + \ 251 ELF_ALIGN((int32_t)namesz, 4); \ 252 } else { \ 253 offset += ELF_ALIGN((int32_t)descsz, 8) + \ 254 sizeof(Elf32_Nhdr) + \ 255 ELF_ALIGN((int32_t)namesz, 8); \ 256 } \ 257} while (0) 258 259/* 260 * Parse individual note entries inside a PT_NOTE segment. 261 */ 262static void 263handle_core_note(Elf *elf, GElf_Ehdr *elfhdr, GElf_Phdr *phdr, 264 char **cmd_line) 265{ 266 size_t max_size; 267 uint64_t raw_size; 268 GElf_Off offset; 269 static pid_t pid; 270 uintptr_t ver; 271 Elf32_Nhdr *nhdr, nhdr_l; 272 static int reg_pseudo = 0, reg2_pseudo = 0, regxfp_pseudo = 0; 273 char buf[BUF_SIZE], *data, *name; 274 275 if (elf == NULL || elfhdr == NULL || phdr == NULL) 276 return; 277 278 data = elf_rawfile(elf, &max_size); 279 offset = phdr->p_offset; 280 while (data != NULL && offset < phdr->p_offset + phdr->p_filesz) { 281 nhdr = (Elf32_Nhdr *)(uintptr_t)((char*)data + offset); 282 memset(&nhdr_l, 0, sizeof(Elf32_Nhdr)); 283 if (!xlatetom(elf, elfhdr, &nhdr->n_type, &nhdr_l.n_type, 284 ELF_T_WORD, sizeof(Elf32_Word)) || 285 !xlatetom(elf, elfhdr, &nhdr->n_descsz, &nhdr_l.n_descsz, 286 ELF_T_WORD, sizeof(Elf32_Word)) || 287 !xlatetom(elf, elfhdr, &nhdr->n_namesz, &nhdr_l.n_namesz, 288 ELF_T_WORD, sizeof(Elf32_Word))) 289 break; 290 291 name = (char *)((char *)nhdr + sizeof(Elf32_Nhdr)); 292 switch (nhdr_l.n_type) { 293 case NT_PRSTATUS: { 294 raw_size = 0; 295 if (elfhdr->e_ident[EI_OSABI] == ELFOSABI_FREEBSD && 296 nhdr_l.n_namesz == 0x8 && 297 !strcmp(name,"FreeBSD")) { 298 if (elfhdr->e_ident[EI_CLASS] == ELFCLASS32) { 299 raw_size = (uint64_t)*((uint32_t *) 300 (uintptr_t)(name + 301 ELF_ALIGN((int32_t) 302 nhdr_l.n_namesz, 4) + 8)); 303 ver = (uintptr_t)NOTE_OFFSET_32(nhdr, 304 nhdr_l.n_namesz,0); 305 if (*((int *)ver) == 1) 306 pid = PID32(nhdr, 307 nhdr_l.n_namesz, 24); 308 } else { 309 raw_size = *((uint64_t *)(uintptr_t) 310 (name + ELF_ALIGN((int32_t) 311 nhdr_l.n_namesz, 8) + 16)); 312 ver = (uintptr_t)NOTE_OFFSET_64(nhdr, 313 nhdr_l.n_namesz,0); 314 if (*((int *)ver) == 1) 315 pid = PID64(nhdr, 316 nhdr_l.n_namesz, 40); 317 } 318 xlatetom(elf, elfhdr, &raw_size, &raw_size, 319 ELF_T_WORD, sizeof(uint64_t)); 320 xlatetom(elf, elfhdr, &pid, &pid, ELF_T_WORD, 321 sizeof(pid_t)); 322 } 323 324 if (raw_size != 0 && style == STYLE_SYSV) { 325 (void) snprintf(buf, BUF_SIZE, "%s/%d", 326 ".reg", pid); 327 tbl_append(); 328 tbl_print(buf, 0); 329 tbl_print_num(raw_size, radix, 1); 330 tbl_print_num(0, radix, 2); 331 if (!reg_pseudo) { 332 tbl_append(); 333 tbl_print(".reg", 0); 334 tbl_print_num(raw_size, radix, 1); 335 tbl_print_num(0, radix, 2); 336 reg_pseudo = 1; 337 text_size_total += raw_size; 338 } 339 text_size_total += raw_size; 340 } 341 } 342 break; 343 case NT_FPREGSET: /* same as NT_PRFPREG */ 344 if (style == STYLE_SYSV) { 345 (void) snprintf(buf, BUF_SIZE, 346 "%s/%d", ".reg2", pid); 347 tbl_append(); 348 tbl_print(buf, 0); 349 tbl_print_num(nhdr_l.n_descsz, radix, 1); 350 tbl_print_num(0, radix, 2); 351 if (!reg2_pseudo) { 352 tbl_append(); 353 tbl_print(".reg2", 0); 354 tbl_print_num(nhdr_l.n_descsz, radix, 355 1); 356 tbl_print_num(0, radix, 2); 357 reg2_pseudo = 1; 358 text_size_total += nhdr_l.n_descsz; 359 } 360 text_size_total += nhdr_l.n_descsz; 361 } 362 break; 363 case NT_AUXV: 364 if (style == STYLE_SYSV) { 365 tbl_append(); 366 tbl_print(".auxv", 0); 367 tbl_print_num(nhdr_l.n_descsz, radix, 1); 368 tbl_print_num(0, radix, 2); 369 text_size_total += nhdr_l.n_descsz; 370 } 371 break; 372 case NT_PRXFPREG: 373 if (style == STYLE_SYSV) { 374 (void) snprintf(buf, BUF_SIZE, "%s/%d", 375 ".reg-xfp", pid); 376 tbl_append(); 377 tbl_print(buf, 0); 378 tbl_print_num(nhdr_l.n_descsz, radix, 1); 379 tbl_print_num(0, radix, 2); 380 if (!regxfp_pseudo) { 381 tbl_append(); 382 tbl_print(".reg-xfp", 0); 383 tbl_print_num(nhdr_l.n_descsz, radix, 384 1); 385 tbl_print_num(0, radix, 2); 386 regxfp_pseudo = 1; 387 text_size_total += nhdr_l.n_descsz; 388 } 389 text_size_total += nhdr_l.n_descsz; 390 } 391 break; 392 case NT_PSINFO: 393 case NT_PRPSINFO: { 394 /* FreeBSD 64-bit */ 395 if (nhdr_l.n_descsz == 0x78 && 396 !strcmp(name,"FreeBSD")) { 397 *cmd_line = strdup(NOTE_OFFSET_64(nhdr, 398 nhdr_l.n_namesz, 33)); 399 /* FreeBSD 32-bit */ 400 } else if (nhdr_l.n_descsz == 0x6c && 401 !strcmp(name,"FreeBSD")) { 402 *cmd_line = strdup(NOTE_OFFSET_32(nhdr, 403 nhdr_l.n_namesz, 25)); 404 } 405 /* Strip any trailing spaces */ 406 if (*cmd_line != NULL) { 407 char *s; 408 409 s = *cmd_line + strlen(*cmd_line); 410 while (s > *cmd_line) { 411 if (*(s-1) != 0x20) break; 412 s--; 413 } 414 *s = 0; 415 } 416 break; 417 } 418 case NT_PSTATUS: 419 case NT_LWPSTATUS: 420 default: 421 break; 422 } 423 NEXT_NOTE(elfhdr, nhdr_l.n_descsz, nhdr_l.n_namesz, offset); 424 } 425} 426 427/* 428 * Handles program headers except for PT_NOTE, when sysv output stlye is 429 * choosen, prints out the segment name and length. For berkely output 430 * style only PT_LOAD segments are handled, and text, 431 * data, bss size is calculated for them. 432 */ 433static void 434handle_phdr(Elf *elf, GElf_Ehdr *elfhdr, GElf_Phdr *phdr, 435 uint32_t idx, const char *name) 436{ 437 uint64_t addr, size; 438 int split; 439 char buf[BUF_SIZE]; 440 441 if (elf == NULL || elfhdr == NULL || phdr == NULL) 442 return; 443 444 size = addr = 0; 445 split = (phdr->p_memsz > 0) && (phdr->p_filesz > 0) && 446 (phdr->p_memsz > phdr->p_filesz); 447 448 if (style == STYLE_SYSV) { 449 (void) snprintf(buf, BUF_SIZE, 450 "%s%d%s", name, idx, (split ? "a" : "")); 451 tbl_append(); 452 tbl_print(buf, 0); 453 tbl_print_num(phdr->p_filesz, radix, 1); 454 tbl_print_num(phdr->p_vaddr, radix, 2); 455 text_size_total += phdr->p_filesz; 456 if (split) { 457 size = phdr->p_memsz - phdr->p_filesz; 458 addr = phdr->p_vaddr + phdr->p_filesz; 459 (void) snprintf(buf, BUF_SIZE, "%s%d%s", name, 460 idx, "b"); 461 text_size_total += phdr->p_memsz - phdr->p_filesz; 462 tbl_append(); 463 tbl_print(buf, 0); 464 tbl_print_num(size, radix, 1); 465 tbl_print_num(addr, radix, 2); 466 } 467 } else { 468 if (phdr->p_type != PT_LOAD) 469 return; 470 if ((phdr->p_flags & PF_W) && !(phdr->p_flags & PF_X)) { 471 data_size += phdr->p_filesz; 472 if (split) 473 data_size += phdr->p_memsz - phdr->p_filesz; 474 } else { 475 text_size += phdr->p_filesz; 476 if (split) 477 text_size += phdr->p_memsz - phdr->p_filesz; 478 } 479 } 480} 481 482/* 483 * Given a core dump file, this function maps program headers to segments. 484 */ 485static int 486handle_core(char const *name, Elf *elf, GElf_Ehdr *elfhdr) 487{ 488 GElf_Phdr phdr; 489 uint32_t i; 490 char *core_cmdline; 491 const char *seg_name; 492 493 if (name == NULL || elf == NULL || elfhdr == NULL) 494 return (RETURN_DATAERR); 495 if (elfhdr->e_shnum != 0 || elfhdr->e_type != ET_CORE) 496 return (RETURN_DATAERR); 497 498 seg_name = core_cmdline = NULL; 499 if (style == STYLE_SYSV) 500 sysv_header(name, NULL); 501 else 502 berkeley_header(); 503 504 for (i = 0; i < elfhdr->e_phnum; i++) { 505 if (gelf_getphdr(elf, i, &phdr) != NULL) { 506 if (phdr.p_type == PT_NOTE) { 507 handle_phdr(elf, elfhdr, &phdr, i, "note"); 508 handle_core_note(elf, elfhdr, &phdr, 509 &core_cmdline); 510 } else { 511 switch(phdr.p_type) { 512 case PT_NULL: 513 seg_name = "null"; 514 break; 515 case PT_LOAD: 516 seg_name = "load"; 517 break; 518 case PT_DYNAMIC: 519 seg_name = "dynamic"; 520 break; 521 case PT_INTERP: 522 seg_name = "interp"; 523 break; 524 case PT_SHLIB: 525 seg_name = "shlib"; 526 break; 527 case PT_PHDR: 528 seg_name = "phdr"; 529 break; 530 case PT_GNU_EH_FRAME: 531 seg_name = "eh_frame_hdr"; 532 break; 533 case PT_GNU_STACK: 534 seg_name = "stack"; 535 break; 536 default: 537 seg_name = "segment"; 538 } 539 handle_phdr(elf, elfhdr, &phdr, i, seg_name); 540 } 541 } 542 } 543 544 if (style == STYLE_BERKELEY) { 545 if (core_cmdline != NULL) { 546 berkeley_footer(core_cmdline, name, 547 "core file invoked as"); 548 } else { 549 berkeley_footer(core_cmdline, name, "core file"); 550 } 551 } else { 552 sysv_footer(); 553 if (core_cmdline != NULL) { 554 (void) printf(" (core file invoked as %s)\n\n", 555 core_cmdline); 556 } else { 557 (void) printf(" (core file)\n\n"); 558 } 559 } 560 free(core_cmdline); 561 return (RETURN_OK); 562} 563 564/* 565 * Given an elf object,ar(1) filename, and based on the output style 566 * and radix format the various sections and their length will be printed 567 * or the size of the text, data, bss sections will be printed out. 568 */ 569static int 570handle_elf(char const *name) 571{ 572 GElf_Ehdr elfhdr; 573 GElf_Shdr shdr; 574 Elf *elf, *elf1; 575 Elf_Arhdr *arhdr; 576 Elf_Scn *scn; 577 Elf_Cmd elf_cmd; 578 int exit_code, fd; 579 580 if (name == NULL) 581 return (RETURN_NOINPUT); 582 583 if ((fd = open(name, O_RDONLY, 0)) < 0) 584 return (RETURN_NOINPUT); 585 586 elf_cmd = ELF_C_READ; 587 elf1 = elf_begin(fd, elf_cmd, NULL); 588 while ((elf = elf_begin(fd, elf_cmd, elf1)) != NULL) { 589 arhdr = elf_getarhdr(elf); 590 if (elf_kind(elf) == ELF_K_NONE && arhdr == NULL) { 591 (void) elf_end(elf); 592 (void) elf_end(elf1); 593 (void) close(fd); 594 return (RETURN_DATAERR); 595 } 596 if (elf_kind(elf) != ELF_K_ELF || 597 (gelf_getehdr(elf, &elfhdr) == NULL)) { 598 elf_cmd = elf_next(elf); 599 (void) elf_end(elf); 600 warnx("%s: File format not recognized", 601 arhdr->ar_name); 602 continue; 603 } 604 /* Core dumps are handled seperately */ 605 if (elfhdr.e_shnum == 0 && elfhdr.e_type == ET_CORE) { 606 exit_code = handle_core(name, elf, &elfhdr); 607 (void) elf_end(elf); 608 (void) elf_end(elf1); 609 (void) close(fd); 610 return (exit_code); 611 } else { 612 scn = NULL; 613 if (style == STYLE_BERKELEY) { 614 berkeley_header(); 615 while ((scn = elf_nextscn(elf, scn)) != NULL) { 616 if (gelf_getshdr(scn, &shdr) != NULL) 617 berkeley_calc(&shdr); 618 } 619 } else { 620 sysv_header(name, arhdr); 621 scn = NULL; 622 while ((scn = elf_nextscn(elf, scn)) != NULL) { 623 if (gelf_getshdr(scn, &shdr) != NULL) 624 sysv_calc(elf, &elfhdr, &shdr); 625 } 626 } 627 if (style == STYLE_BERKELEY) { 628 if (arhdr != NULL) { 629 berkeley_footer(name, arhdr->ar_name, 630 "ex"); 631 } else { 632 berkeley_footer(name, NULL, "ex"); 633 } 634 } else { 635 sysv_footer(); 636 } 637 } 638 elf_cmd = elf_next(elf); 639 (void) elf_end(elf); 640 } 641 (void) elf_end(elf1); 642 (void) close(fd); 643 return (RETURN_OK); 644} 645 646/* 647 * Sysv formatting helper functions. 648 */ 649static void 650sysv_header(const char *name, Elf_Arhdr *arhdr) 651{ 652 653 text_size_total = 0; 654 if (arhdr != NULL) 655 (void) printf("%s (ex %s):\n", arhdr->ar_name, name); 656 else 657 (void) printf("%s :\n", name); 658 tbl_new(3); 659 tbl_append(); 660 tbl_print("section", 0); 661 tbl_print("size", 1); 662 tbl_print("addr", 2); 663} 664 665static void 666sysv_calc(Elf *elf, GElf_Ehdr *elfhdr, GElf_Shdr *shdr) 667{ 668 char *section_name; 669 670 section_name = elf_strptr(elf, elfhdr->e_shstrndx, 671 (size_t) shdr->sh_name); 672 if ((shdr->sh_type == SHT_SYMTAB || 673 shdr->sh_type == SHT_STRTAB || shdr->sh_type == SHT_RELA || 674 shdr->sh_type == SHT_REL) && shdr->sh_addr == 0) 675 return; 676 tbl_append(); 677 tbl_print(section_name, 0); 678 tbl_print_num(shdr->sh_size, radix, 1); 679 tbl_print_num(shdr->sh_addr, radix, 2); 680 text_size_total += shdr->sh_size; 681} 682 683static void 684sysv_footer(void) 685{ 686 tbl_append(); 687 tbl_print("Total", 0); 688 tbl_print_num(text_size_total, radix, 1); 689 tbl_flush(); 690 putchar('\n'); 691} 692 693/* 694 * berkeley style output formatting helper functions. 695 */ 696static void 697berkeley_header(void) 698{ 699 static int printed; 700 701 text_size = data_size = bss_size = 0; 702 if (!printed) { 703 tbl_new(6); 704 tbl_append(); 705 tbl_print("text", 0); 706 tbl_print("data", 1); 707 tbl_print("bss", 2); 708 if (radix == RADIX_OCTAL) 709 tbl_print("oct", 3); 710 else 711 tbl_print("dec", 3); 712 tbl_print("hex", 4); 713 tbl_print("filename", 5); 714 printed = 1; 715 } 716} 717 718static void 719berkeley_calc(GElf_Shdr *shdr) 720{ 721 if (shdr != NULL) { 722 if (!(shdr->sh_flags & SHF_ALLOC)) 723 return; 724 if ((shdr->sh_flags & SHF_ALLOC) && 725 ((shdr->sh_flags & SHF_EXECINSTR) || 726 !(shdr->sh_flags & SHF_WRITE))) 727 text_size += shdr->sh_size; 728 else if ((shdr->sh_flags & SHF_ALLOC) && 729 (shdr->sh_flags & SHF_WRITE) && 730 (shdr->sh_type != SHT_NOBITS)) 731 data_size += shdr->sh_size; 732 else 733 bss_size += shdr->sh_size; 734 } 735} 736 737static void 738berkeley_totals(void) 739{ 740 long unsigned int grand_total; 741 742 grand_total = text_size_total + data_size_total + bss_size_total; 743 tbl_append(); 744 tbl_print_num(text_size_total, radix, 0); 745 tbl_print_num(data_size_total, radix, 1); 746 tbl_print_num(bss_size_total, radix, 2); 747 if (radix == RADIX_OCTAL) 748 tbl_print_num(grand_total, RADIX_OCTAL, 3); 749 else 750 tbl_print_num(grand_total, RADIX_DECIMAL, 3); 751 tbl_print_num(grand_total, RADIX_HEX, 4); 752} 753 754static void 755berkeley_footer(const char *name, const char *ar_name, const char *msg) 756{ 757 char buf[BUF_SIZE]; 758 759 total_size = text_size + data_size + bss_size; 760 if (show_totals) { 761 text_size_total += text_size; 762 bss_size_total += bss_size; 763 data_size_total += data_size; 764 } 765 766 tbl_append(); 767 tbl_print_num(text_size, radix, 0); 768 tbl_print_num(data_size, radix, 1); 769 tbl_print_num(bss_size, radix, 2); 770 if (radix == RADIX_OCTAL) 771 tbl_print_num(total_size, RADIX_OCTAL, 3); 772 else 773 tbl_print_num(total_size, RADIX_DECIMAL, 3); 774 tbl_print_num(total_size, RADIX_HEX, 4); 775 if (ar_name != NULL && name != NULL) 776 (void) snprintf(buf, BUF_SIZE, "%s (%s %s)", ar_name, msg, 777 name); 778 else if (ar_name != NULL && name == NULL) 779 (void) snprintf(buf, BUF_SIZE, "%s (%s)", ar_name, msg); 780 else 781 (void) snprintf(buf, BUF_SIZE, "%s", name); 782 tbl_print(buf, 5); 783} 784 785 786static void 787tbl_new(int col) 788{ 789 790 assert(tb == NULL); 791 assert(col > 0); 792 if ((tb = calloc(1, sizeof(*tb))) == NULL) 793 err(EXIT_FAILURE, "calloc"); 794 if ((tb->tbl = calloc(col, sizeof(*tb->tbl))) == NULL) 795 err(EXIT_FAILURE, "calloc"); 796 if ((tb->width = calloc(col, sizeof(*tb->width))) == NULL) 797 err(EXIT_FAILURE, "calloc"); 798 tb->col = col; 799 tb->row = 0; 800} 801 802static void 803tbl_print(const char *s, int col) 804{ 805 int len; 806 807 assert(tb != NULL && tb->col > 0 && tb->row > 0 && col < tb->col); 808 assert(s != NULL && tb->tbl[col][tb->row - 1] == NULL); 809 if ((tb->tbl[col][tb->row - 1] = strdup(s)) == NULL) 810 err(EXIT_FAILURE, "strdup"); 811 len = strlen(s); 812 if (len > tb->width[col]) 813 tb->width[col] = len; 814} 815 816static void 817tbl_print_num(uint64_t num, enum radix_style rad, int col) 818{ 819 char buf[BUF_SIZE]; 820 821 (void) snprintf(buf, BUF_SIZE, (rad == RADIX_DECIMAL ? "%ju" : 822 ((rad == RADIX_OCTAL) ? "0%jo" : "0x%jx")), (uintmax_t) num); 823 tbl_print(buf, col); 824} 825 826static void 827tbl_append(void) 828{ 829 int i; 830 831 assert(tb != NULL && tb->col > 0); 832 tb->row++; 833 for (i = 0; i < tb->col; i++) { 834 tb->tbl[i] = realloc(tb->tbl[i], sizeof(*tb->tbl[i]) * tb->row); 835 if (tb->tbl[i] == NULL) 836 err(EXIT_FAILURE, "realloc"); 837 tb->tbl[i][tb->row - 1] = NULL; 838 } 839} 840 841static void 842tbl_flush(void) 843{ 844 const char *str; 845 int i, j; 846 847 if (tb == NULL) 848 return; 849 850 assert(tb->col > 0); 851 for (i = 0; i < tb->row; i++) { 852 if (style == STYLE_BERKELEY) 853 printf(" "); 854 for (j = 0; j < tb->col; j++) { 855 str = (tb->tbl[j][i] != NULL ? tb->tbl[j][i] : ""); 856 if (style == STYLE_SYSV && j == 0) 857 printf("%-*s", tb->width[j], str); 858 else if (style == STYLE_BERKELEY && j == tb->col - 1) 859 printf("%s", str); 860 else 861 printf("%*s", tb->width[j], str); 862 if (j == tb->col -1) 863 putchar('\n'); 864 else 865 printf(" "); 866 } 867 } 868 869 for (i = 0; i < tb->col; i++) { 870 for (j = 0; j < tb->row; j++) { 871 if (tb->tbl[i][j]) 872 free(tb->tbl[i][j]); 873 } 874 free(tb->tbl[i]); 875 } 876 free(tb->tbl); 877 free(tb->width); 878 free(tb); 879 tb = NULL; 880} 881 882#define USAGE_MESSAGE "\ 883Usage: %s [options] file ...\n\ 884 Display sizes of ELF sections.\n\n\ 885 Options:\n\ 886 --format=format Display output in specified format. Supported\n\ 887 values are `berkeley' and `sysv'.\n\ 888 --help Display this help message and exit.\n\ 889 --radix=radix Display numeric values in the specified radix.\n\ 890 Supported values are: 8, 10 and 16.\n\ 891 --totals Show cumulative totals of section sizes.\n\ 892 --version Display a version identifier and exit.\n\ 893 -A Equivalent to `--format=sysv'.\n\ 894 -B Equivalent to `--format=berkeley'.\n\ 895 -V Equivalent to `--version'.\n\ 896 -d Equivalent to `--radix=10'.\n\ 897 -h Same as option --help.\n\ 898 -o Equivalent to `--radix=8'.\n\ 899 -t Equivalent to option --totals.\n\ 900 -x Equivalent to `--radix=16'.\n" 901 902static void 903usage(void) 904{ 905 (void) fprintf(stderr, USAGE_MESSAGE, ELFTC_GETPROGNAME()); 906 exit(EXIT_FAILURE); 907} 908 909static void 910show_version(void) 911{ 912 (void) printf("%s (%s)\n", ELFTC_GETPROGNAME(), elftc_version()); 913 exit(EXIT_SUCCESS); 914} 915