1 /* This is included from relocs_32/64.c */ 2 3 #define ElfW(type) _ElfW(ELF_BITS, type) 4 #define _ElfW(bits, type) __ElfW(bits, type) 5 #define __ElfW(bits, type) Elf##bits##_##type 6 7 #define Elf_Addr ElfW(Addr) 8 #define Elf_Ehdr ElfW(Ehdr) 9 #define Elf_Phdr ElfW(Phdr) 10 #define Elf_Shdr ElfW(Shdr) 11 #define Elf_Sym ElfW(Sym) 12 13 static Elf_Ehdr ehdr; 14 15 struct relocs { 16 uint32_t *offset; 17 unsigned long count; 18 unsigned long size; 19 }; 20 21 static struct relocs relocs; 22 23 struct section { 24 Elf_Shdr shdr; 25 struct section *link; 26 Elf_Sym *symtab; 27 Elf_Rel *reltab; 28 char *strtab; 29 long shdr_offset; 30 }; 31 static struct section *secs; 32 33 static const char * const regex_sym_kernel = { 34 /* Symbols matching these regex's should never be relocated */ 35 "^(__crc_)", 36 }; 37 38 static regex_t sym_regex_c; 39 40 static int regex_skip_reloc(const char *sym_name) 41 { 42 return !regexec(&sym_regex_c, sym_name, 0, NULL, 0); 43 } 44 45 static void regex_init(void) 46 { 47 char errbuf[128]; 48 int err; 49 50 err = regcomp(&sym_regex_c, regex_sym_kernel, 51 REG_EXTENDED|REG_NOSUB); 52 53 if (err) { 54 regerror(err, &sym_regex_c, errbuf, sizeof(errbuf)); 55 die("%s", errbuf); 56 } 57 } 58 59 static const char *rel_type(unsigned type) 60 { 61 static const char * const type_name[] = { 62 #define REL_TYPE(X)[X] = #X 63 REL_TYPE(R_MIPS_NONE), 64 REL_TYPE(R_MIPS_16), 65 REL_TYPE(R_MIPS_32), 66 REL_TYPE(R_MIPS_REL32), 67 REL_TYPE(R_MIPS_26), 68 REL_TYPE(R_MIPS_HI16), 69 REL_TYPE(R_MIPS_LO16), 70 REL_TYPE(R_MIPS_GPREL16), 71 REL_TYPE(R_MIPS_LITERAL), 72 REL_TYPE(R_MIPS_GOT16), 73 REL_TYPE(R_MIPS_PC16), 74 REL_TYPE(R_MIPS_CALL16), 75 REL_TYPE(R_MIPS_GPREL32), 76 REL_TYPE(R_MIPS_64), 77 REL_TYPE(R_MIPS_HIGHER), 78 REL_TYPE(R_MIPS_HIGHEST), 79 REL_TYPE(R_MIPS_PC21_S2), 80 REL_TYPE(R_MIPS_PC26_S2), 81 #undef REL_TYPE 82 }; 83 const char *name = "unknown type rel type name"; 84 85 if (type < ARRAY_SIZE(type_name) && type_name[type]) 86 name = type_name[type]; 87 return name; 88 } 89 90 static const char *sec_name(unsigned shndx) 91 { 92 const char *sec_strtab; 93 const char *name; 94 95 sec_strtab = secs[ehdr.e_shstrndx].strtab; 96 if (shndx < ehdr.e_shnum) 97 name = sec_strtab + secs[shndx].shdr.sh_name; 98 else if (shndx == SHN_ABS) 99 name = "ABSOLUTE"; 100 else if (shndx == SHN_COMMON) 101 name = "COMMON"; 102 else 103 name = "<noname>"; 104 return name; 105 } 106 107 static struct section *sec_lookup(const char *secname) 108 { 109 int i; 110 111 for (i = 0; i < ehdr.e_shnum; i++) 112 if (strcmp(secname, sec_name(i)) == 0) 113 return &secs[i]; 114 115 return NULL; 116 } 117 118 static const char *sym_name(const char *sym_strtab, Elf_Sym *sym) 119 { 120 const char *name; 121 122 if (sym->st_name) 123 name = sym_strtab + sym->st_name; 124 else 125 name = sec_name(sym->st_shndx); 126 return name; 127 } 128 129 #if BYTE_ORDER == LITTLE_ENDIAN 130 #define le16_to_cpu(val) (val) 131 #define le32_to_cpu(val) (val) 132 #define le64_to_cpu(val) (val) 133 #define be16_to_cpu(val) bswap_16(val) 134 #define be32_to_cpu(val) bswap_32(val) 135 #define be64_to_cpu(val) bswap_64(val) 136 137 #define cpu_to_le16(val) (val) 138 #define cpu_to_le32(val) (val) 139 #define cpu_to_le64(val) (val) 140 #define cpu_to_be16(val) bswap_16(val) 141 #define cpu_to_be32(val) bswap_32(val) 142 #define cpu_to_be64(val) bswap_64(val) 143 #endif 144 #if BYTE_ORDER == BIG_ENDIAN 145 #define le16_to_cpu(val) bswap_16(val) 146 #define le32_to_cpu(val) bswap_32(val) 147 #define le64_to_cpu(val) bswap_64(val) 148 #define be16_to_cpu(val) (val) 149 #define be32_to_cpu(val) (val) 150 #define be64_to_cpu(val) (val) 151 152 #define cpu_to_le16(val) bswap_16(val) 153 #define cpu_to_le32(val) bswap_32(val) 154 #define cpu_to_le64(val) bswap_64(val) 155 #define cpu_to_be16(val) (val) 156 #define cpu_to_be32(val) (val) 157 #define cpu_to_be64(val) (val) 158 #endif 159 160 static uint16_t elf16_to_cpu(uint16_t val) 161 { 162 if (ehdr.e_ident[EI_DATA] == ELFDATA2LSB) 163 return le16_to_cpu(val); 164 else 165 return be16_to_cpu(val); 166 } 167 168 static uint32_t elf32_to_cpu(uint32_t val) 169 { 170 if (ehdr.e_ident[EI_DATA] == ELFDATA2LSB) 171 return le32_to_cpu(val); 172 else 173 return be32_to_cpu(val); 174 } 175 176 static uint32_t cpu_to_elf32(uint32_t val) 177 { 178 if (ehdr.e_ident[EI_DATA] == ELFDATA2LSB) 179 return cpu_to_le32(val); 180 else 181 return cpu_to_be32(val); 182 } 183 184 #define elf_half_to_cpu(x) elf16_to_cpu(x) 185 #define elf_word_to_cpu(x) elf32_to_cpu(x) 186 187 #if ELF_BITS == 64 188 static uint64_t elf64_to_cpu(uint64_t val) 189 { 190 if (ehdr.e_ident[EI_DATA] == ELFDATA2LSB) 191 return le64_to_cpu(val); 192 else 193 return be64_to_cpu(val); 194 } 195 #define elf_addr_to_cpu(x) elf64_to_cpu(x) 196 #define elf_off_to_cpu(x) elf64_to_cpu(x) 197 #define elf_xword_to_cpu(x) elf64_to_cpu(x) 198 #else 199 #define elf_addr_to_cpu(x) elf32_to_cpu(x) 200 #define elf_off_to_cpu(x) elf32_to_cpu(x) 201 #define elf_xword_to_cpu(x) elf32_to_cpu(x) 202 #endif 203 204 static void read_ehdr(FILE *fp) 205 { 206 if (fread(&ehdr, sizeof(ehdr), 1, fp) != 1) 207 die("Cannot read ELF header: %s\n", strerror(errno)); 208 209 if (memcmp(ehdr.e_ident, ELFMAG, SELFMAG) != 0) 210 die("No ELF magic\n"); 211 212 if (ehdr.e_ident[EI_CLASS] != ELF_CLASS) 213 die("Not a %d bit executable\n", ELF_BITS); 214 215 if ((ehdr.e_ident[EI_DATA] != ELFDATA2LSB) && 216 (ehdr.e_ident[EI_DATA] != ELFDATA2MSB)) 217 die("Unknown ELF Endianness\n"); 218 219 if (ehdr.e_ident[EI_VERSION] != EV_CURRENT) 220 die("Unknown ELF version\n"); 221 222 /* Convert the fields to native endian */ 223 ehdr.e_type = elf_half_to_cpu(ehdr.e_type); 224 ehdr.e_machine = elf_half_to_cpu(ehdr.e_machine); 225 ehdr.e_version = elf_word_to_cpu(ehdr.e_version); 226 ehdr.e_entry = elf_addr_to_cpu(ehdr.e_entry); 227 ehdr.e_phoff = elf_off_to_cpu(ehdr.e_phoff); 228 ehdr.e_shoff = elf_off_to_cpu(ehdr.e_shoff); 229 ehdr.e_flags = elf_word_to_cpu(ehdr.e_flags); 230 ehdr.e_ehsize = elf_half_to_cpu(ehdr.e_ehsize); 231 ehdr.e_phentsize = elf_half_to_cpu(ehdr.e_phentsize); 232 ehdr.e_phnum = elf_half_to_cpu(ehdr.e_phnum); 233 ehdr.e_shentsize = elf_half_to_cpu(ehdr.e_shentsize); 234 ehdr.e_shnum = elf_half_to_cpu(ehdr.e_shnum); 235 ehdr.e_shstrndx = elf_half_to_cpu(ehdr.e_shstrndx); 236 237 if ((ehdr.e_type != ET_EXEC) && (ehdr.e_type != ET_DYN)) 238 die("Unsupported ELF header type\n"); 239 240 if (ehdr.e_machine != ELF_MACHINE) 241 die("Not for %s\n", ELF_MACHINE_NAME); 242 243 if (ehdr.e_version != EV_CURRENT) 244 die("Unknown ELF version\n"); 245 246 if (ehdr.e_ehsize != sizeof(Elf_Ehdr)) 247 die("Bad Elf header size\n"); 248 249 if (ehdr.e_phentsize != sizeof(Elf_Phdr)) 250 die("Bad program header entry\n"); 251 252 if (ehdr.e_shentsize != sizeof(Elf_Shdr)) 253 die("Bad section header entry\n"); 254 255 if (ehdr.e_shstrndx >= ehdr.e_shnum) 256 die("String table index out of bounds\n"); 257 } 258 259 static void read_shdrs(FILE *fp) 260 { 261 int i; 262 Elf_Shdr shdr; 263 264 secs = calloc(ehdr.e_shnum, sizeof(struct section)); 265 if (!secs) 266 die("Unable to allocate %d section headers\n", ehdr.e_shnum); 267 268 if (fseek(fp, ehdr.e_shoff, SEEK_SET) < 0) 269 die("Seek to %d failed: %s\n", ehdr.e_shoff, strerror(errno)); 270 271 for (i = 0; i < ehdr.e_shnum; i++) { 272 struct section *sec = &secs[i]; 273 274 sec->shdr_offset = ftell(fp); 275 if (fread(&shdr, sizeof(shdr), 1, fp) != 1) 276 die("Cannot read ELF section headers %d/%d: %s\n", 277 i, ehdr.e_shnum, strerror(errno)); 278 sec->shdr.sh_name = elf_word_to_cpu(shdr.sh_name); 279 sec->shdr.sh_type = elf_word_to_cpu(shdr.sh_type); 280 sec->shdr.sh_flags = elf_xword_to_cpu(shdr.sh_flags); 281 sec->shdr.sh_addr = elf_addr_to_cpu(shdr.sh_addr); 282 sec->shdr.sh_offset = elf_off_to_cpu(shdr.sh_offset); 283 sec->shdr.sh_size = elf_xword_to_cpu(shdr.sh_size); 284 sec->shdr.sh_link = elf_word_to_cpu(shdr.sh_link); 285 sec->shdr.sh_info = elf_word_to_cpu(shdr.sh_info); 286 sec->shdr.sh_addralign = elf_xword_to_cpu(shdr.sh_addralign); 287 sec->shdr.sh_entsize = elf_xword_to_cpu(shdr.sh_entsize); 288 if (sec->shdr.sh_link < ehdr.e_shnum) 289 sec->link = &secs[sec->shdr.sh_link]; 290 } 291 } 292 293 static void read_strtabs(FILE *fp) 294 { 295 int i; 296 297 for (i = 0; i < ehdr.e_shnum; i++) { 298 struct section *sec = &secs[i]; 299 300 if (sec->shdr.sh_type != SHT_STRTAB) 301 continue; 302 303 sec->strtab = malloc(sec->shdr.sh_size); 304 if (!sec->strtab) 305 die("malloc of %d bytes for strtab failed\n", 306 sec->shdr.sh_size); 307 308 if (fseek(fp, sec->shdr.sh_offset, SEEK_SET) < 0) 309 die("Seek to %d failed: %s\n", 310 sec->shdr.sh_offset, strerror(errno)); 311 312 if (fread(sec->strtab, 1, sec->shdr.sh_size, fp) != 313 sec->shdr.sh_size) 314 die("Cannot read symbol table: %s\n", strerror(errno)); 315 } 316 } 317 318 static void read_symtabs(FILE *fp) 319 { 320 int i, j; 321 322 for (i = 0; i < ehdr.e_shnum; i++) { 323 struct section *sec = &secs[i]; 324 if (sec->shdr.sh_type != SHT_SYMTAB) 325 continue; 326 327 sec->symtab = malloc(sec->shdr.sh_size); 328 if (!sec->symtab) 329 die("malloc of %d bytes for symtab failed\n", 330 sec->shdr.sh_size); 331 332 if (fseek(fp, sec->shdr.sh_offset, SEEK_SET) < 0) 333 die("Seek to %d failed: %s\n", 334 sec->shdr.sh_offset, strerror(errno)); 335 336 if (fread(sec->symtab, 1, sec->shdr.sh_size, fp) != 337 sec->shdr.sh_size) 338 die("Cannot read symbol table: %s\n", strerror(errno)); 339 340 for (j = 0; j < sec->shdr.sh_size/sizeof(Elf_Sym); j++) { 341 Elf_Sym *sym = &sec->symtab[j]; 342 343 sym->st_name = elf_word_to_cpu(sym->st_name); 344 sym->st_value = elf_addr_to_cpu(sym->st_value); 345 sym->st_size = elf_xword_to_cpu(sym->st_size); 346 sym->st_shndx = elf_half_to_cpu(sym->st_shndx); 347 } 348 } 349 } 350 351 static void read_relocs(FILE *fp) 352 { 353 static unsigned long base = 0; 354 int i, j; 355 356 if (!base) { 357 struct section *sec = sec_lookup(".text"); 358 359 if (!sec) 360 die("Could not find .text section\n"); 361 362 base = sec->shdr.sh_addr; 363 } 364 365 for (i = 0; i < ehdr.e_shnum; i++) { 366 struct section *sec = &secs[i]; 367 368 if (sec->shdr.sh_type != SHT_REL_TYPE) 369 continue; 370 371 sec->reltab = malloc(sec->shdr.sh_size); 372 if (!sec->reltab) 373 die("malloc of %d bytes for relocs failed\n", 374 sec->shdr.sh_size); 375 376 if (fseek(fp, sec->shdr.sh_offset, SEEK_SET) < 0) 377 die("Seek to %d failed: %s\n", 378 sec->shdr.sh_offset, strerror(errno)); 379 380 if (fread(sec->reltab, 1, sec->shdr.sh_size, fp) != 381 sec->shdr.sh_size) 382 die("Cannot read symbol table: %s\n", strerror(errno)); 383 384 for (j = 0; j < sec->shdr.sh_size/sizeof(Elf_Rel); j++) { 385 Elf_Rel *rel = &sec->reltab[j]; 386 387 rel->r_offset = elf_addr_to_cpu(rel->r_offset); 388 /* Set offset into kernel image */ 389 rel->r_offset -= base; 390 #if (ELF_BITS == 32) 391 rel->r_info = elf_xword_to_cpu(rel->r_info); 392 #else 393 /* Convert MIPS64 RELA format - only the symbol 394 * index needs converting to native endianness 395 */ 396 rel->r_info = rel->r_info; 397 ELF_R_SYM(rel->r_info) = elf32_to_cpu(ELF_R_SYM(rel->r_info)); 398 #endif 399 #if (SHT_REL_TYPE == SHT_RELA) 400 rel->r_addend = elf_xword_to_cpu(rel->r_addend); 401 #endif 402 } 403 } 404 } 405 406 static void remove_relocs(FILE *fp) 407 { 408 int i; 409 Elf_Shdr shdr; 410 411 for (i = 0; i < ehdr.e_shnum; i++) { 412 struct section *sec = &secs[i]; 413 414 if (sec->shdr.sh_type != SHT_REL_TYPE) 415 continue; 416 417 if (fseek(fp, sec->shdr_offset, SEEK_SET) < 0) 418 die("Seek to %d failed: %s\n", 419 sec->shdr_offset, strerror(errno)); 420 421 if (fread(&shdr, sizeof(shdr), 1, fp) != 1) 422 die("Cannot read ELF section headers %d/%d: %s\n", 423 i, ehdr.e_shnum, strerror(errno)); 424 425 /* Set relocation section size to 0, effectively removing it. 426 * This is necessary due to lack of support for relocations 427 * in objcopy when creating 32bit elf from 64bit elf. 428 */ 429 shdr.sh_size = 0; 430 431 if (fseek(fp, sec->shdr_offset, SEEK_SET) < 0) 432 die("Seek to %d failed: %s\n", 433 sec->shdr_offset, strerror(errno)); 434 435 if (fwrite(&shdr, sizeof(shdr), 1, fp) != 1) 436 die("Cannot write ELF section headers %d/%d: %s\n", 437 i, ehdr.e_shnum, strerror(errno)); 438 } 439 } 440 441 static void add_reloc(struct relocs *r, uint32_t offset, unsigned type) 442 { 443 /* Relocation representation in binary table: 444 * |76543210|76543210|76543210|76543210| 445 * | Type | offset from _text >> 2 | 446 */ 447 offset >>= 2; 448 if (offset > 0x00FFFFFF) 449 die("Kernel image exceeds maximum size for relocation!\n"); 450 451 offset = (offset & 0x00FFFFFF) | ((type & 0xFF) << 24); 452 453 if (r->count == r->size) { 454 unsigned long newsize = r->size + 50000; 455 void *mem = realloc(r->offset, newsize * sizeof(r->offset[0])); 456 457 if (!mem) 458 die("realloc failed\n"); 459 460 r->offset = mem; 461 r->size = newsize; 462 } 463 r->offset[r->count++] = offset; 464 } 465 466 static void walk_relocs(int (*process)(struct section *sec, Elf_Rel *rel, 467 Elf_Sym *sym, const char *symname)) 468 { 469 int i; 470 471 /* Walk through the relocations */ 472 for (i = 0; i < ehdr.e_shnum; i++) { 473 char *sym_strtab; 474 Elf_Sym *sh_symtab; 475 struct section *sec_applies, *sec_symtab; 476 int j; 477 struct section *sec = &secs[i]; 478 479 if (sec->shdr.sh_type != SHT_REL_TYPE) 480 continue; 481 482 sec_symtab = sec->link; 483 sec_applies = &secs[sec->shdr.sh_info]; 484 if (!(sec_applies->shdr.sh_flags & SHF_ALLOC)) 485 continue; 486 487 sh_symtab = sec_symtab->symtab; 488 sym_strtab = sec_symtab->link->strtab; 489 for (j = 0; j < sec->shdr.sh_size/sizeof(Elf_Rel); j++) { 490 Elf_Rel *rel = &sec->reltab[j]; 491 Elf_Sym *sym = &sh_symtab[ELF_R_SYM(rel->r_info)]; 492 const char *symname = sym_name(sym_strtab, sym); 493 494 process(sec, rel, sym, symname); 495 } 496 } 497 } 498 499 static int do_reloc(struct section *sec, Elf_Rel *rel, Elf_Sym *sym, 500 const char *symname) 501 { 502 unsigned r_type = ELF_R_TYPE(rel->r_info); 503 unsigned bind = ELF_ST_BIND(sym->st_info); 504 505 if ((bind == STB_WEAK) && (sym->st_value == 0)) { 506 /* Don't relocate weak symbols without a target */ 507 return 0; 508 } 509 510 if (regex_skip_reloc(symname)) 511 return 0; 512 513 switch (r_type) { 514 case R_MIPS_NONE: 515 case R_MIPS_REL32: 516 case R_MIPS_PC16: 517 case R_MIPS_PC21_S2: 518 case R_MIPS_PC26_S2: 519 /* 520 * NONE can be ignored and PC relative relocations don't 521 * need to be adjusted. 522 */ 523 case R_MIPS_HIGHEST: 524 case R_MIPS_HIGHER: 525 /* We support relocating within the same 4Gb segment only, 526 * thus leaving the top 32bits unchanged 527 */ 528 case R_MIPS_LO16: 529 /* We support relocating by 64k jumps only 530 * thus leaving the bottom 16bits unchanged 531 */ 532 break; 533 534 case R_MIPS_64: 535 case R_MIPS_32: 536 case R_MIPS_26: 537 case R_MIPS_HI16: 538 add_reloc(&relocs, rel->r_offset, r_type); 539 break; 540 541 default: 542 die("Unsupported relocation type: %s (%d)\n", 543 rel_type(r_type), r_type); 544 break; 545 } 546 547 return 0; 548 } 549 550 static int write_reloc_as_bin(uint32_t v, FILE *f) 551 { 552 unsigned char buf[4]; 553 554 v = cpu_to_elf32(v); 555 556 memcpy(buf, &v, sizeof(uint32_t)); 557 return fwrite(buf, 1, 4, f); 558 } 559 560 static int write_reloc_as_text(uint32_t v, FILE *f) 561 { 562 int res; 563 564 res = fprintf(f, "\t.long 0x%08"PRIx32"\n", v); 565 if (res < 0) 566 return res; 567 else 568 return sizeof(uint32_t); 569 } 570 571 static void emit_relocs(int as_text, int as_bin, FILE *outf) 572 { 573 int i; 574 int (*write_reloc)(uint32_t, FILE *) = write_reloc_as_bin; 575 int size = 0; 576 int size_reserved; 577 struct section *sec_reloc; 578 579 sec_reloc = sec_lookup(".data.reloc"); 580 if (!sec_reloc) 581 die("Could not find relocation section\n"); 582 583 size_reserved = sec_reloc->shdr.sh_size; 584 585 /* Collect up the relocations */ 586 walk_relocs(do_reloc); 587 588 /* Print the relocations */ 589 if (as_text) { 590 /* Print the relocations in a form suitable that 591 * gas will like. 592 */ 593 printf(".section \".data.reloc\",\"a\"\n"); 594 printf(".balign 4\n"); 595 /* Output text to stdout */ 596 write_reloc = write_reloc_as_text; 597 outf = stdout; 598 } else if (as_bin) { 599 /* Output raw binary to stdout */ 600 outf = stdout; 601 } else { 602 /* Seek to offset of the relocation section. 603 * Each relocation is then written into the 604 * vmlinux kernel image. 605 */ 606 if (fseek(outf, sec_reloc->shdr.sh_offset, SEEK_SET) < 0) { 607 die("Seek to %d failed: %s\n", 608 sec_reloc->shdr.sh_offset, strerror(errno)); 609 } 610 } 611 612 for (i = 0; i < relocs.count; i++) 613 size += write_reloc(relocs.offset[i], outf); 614 615 /* Print a stop, but only if we've actually written some relocs */ 616 if (size) 617 size += write_reloc(0, outf); 618 619 if (size > size_reserved) 620 /* Die, but suggest a value for CONFIG_RELOCATION_TABLE_SIZE 621 * which will fix this problem and allow a bit of headroom 622 * if more kernel features are enabled 623 */ 624 die("Relocations overflow available space!\n" \ 625 "Please adjust CONFIG_RELOCATION_TABLE_SIZE " \ 626 "to at least 0x%08x\n", (size + 0x1000) & ~0xFFF); 627 } 628 629 /* 630 * As an aid to debugging problems with different linkers 631 * print summary information about the relocs. 632 * Since different linkers tend to emit the sections in 633 * different orders we use the section names in the output. 634 */ 635 static int do_reloc_info(struct section *sec, Elf_Rel *rel, ElfW(Sym) *sym, 636 const char *symname) 637 { 638 printf("%16s 0x%08x %16s %40s %16s\n", 639 sec_name(sec->shdr.sh_info), 640 (unsigned int)rel->r_offset, 641 rel_type(ELF_R_TYPE(rel->r_info)), 642 symname, 643 sec_name(sym->st_shndx)); 644 return 0; 645 } 646 647 static void print_reloc_info(void) 648 { 649 printf("%16s %10s %16s %40s %16s\n", 650 "reloc section", 651 "offset", 652 "reloc type", 653 "symbol", 654 "symbol section"); 655 walk_relocs(do_reloc_info); 656 } 657 658 #if ELF_BITS == 64 659 # define process process_64 660 #else 661 # define process process_32 662 #endif 663 664 void process(FILE *fp, int as_text, int as_bin, 665 int show_reloc_info, int keep_relocs) 666 { 667 regex_init(); 668 read_ehdr(fp); 669 read_shdrs(fp); 670 read_strtabs(fp); 671 read_symtabs(fp); 672 read_relocs(fp); 673 if (show_reloc_info) { 674 print_reloc_info(); 675 return; 676 } 677 emit_relocs(as_text, as_bin, fp); 678 if (!keep_relocs) 679 remove_relocs(fp); 680 } 681