| 1 | /* Mach-O support for BFD. |
| 2 | Copyright 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009 |
| 3 | Free Software Foundation, Inc. |
| 4 | |
| 5 | This file is part of BFD, the Binary File Descriptor library. |
| 6 | |
| 7 | This program is free software; you can redistribute it and/or modify |
| 8 | it under the terms of the GNU General Public License as published by |
| 9 | the Free Software Foundation; either version 3 of the License, or |
| 10 | (at your option) any later version. |
| 11 | |
| 12 | This program is distributed in the hope that it will be useful, |
| 13 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 15 | GNU General Public License for more details. |
| 16 | |
| 17 | You should have received a copy of the GNU General Public License |
| 18 | along with this program; if not, write to the Free Software |
| 19 | Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, |
| 20 | MA 02110-1301, USA. */ |
| 21 | |
| 22 | #include "sysdep.h" |
| 23 | #include "mach-o.h" |
| 24 | #include "bfd.h" |
| 25 | #include "libbfd.h" |
| 26 | #include "libiberty.h" |
| 27 | #include "aout/stab_gnu.h" |
| 28 | #include <ctype.h> |
| 29 | |
| 30 | #define bfd_mach_o_object_p bfd_mach_o_gen_object_p |
| 31 | #define bfd_mach_o_core_p bfd_mach_o_gen_core_p |
| 32 | #define bfd_mach_o_mkobject bfd_false |
| 33 | |
| 34 | unsigned int |
| 35 | bfd_mach_o_version (bfd *abfd) |
| 36 | { |
| 37 | bfd_mach_o_data_struct *mdata = NULL; |
| 38 | |
| 39 | BFD_ASSERT (bfd_mach_o_valid (abfd)); |
| 40 | mdata = abfd->tdata.mach_o_data; |
| 41 | |
| 42 | return mdata->header.version; |
| 43 | } |
| 44 | |
| 45 | bfd_boolean |
| 46 | bfd_mach_o_valid (bfd *abfd) |
| 47 | { |
| 48 | if (abfd == NULL || abfd->xvec == NULL) |
| 49 | return FALSE; |
| 50 | |
| 51 | if (abfd->xvec->flavour != bfd_target_mach_o_flavour) |
| 52 | return FALSE; |
| 53 | |
| 54 | if (abfd->tdata.mach_o_data == NULL) |
| 55 | return FALSE; |
| 56 | return TRUE; |
| 57 | } |
| 58 | |
| 59 | static INLINE bfd_boolean |
| 60 | mach_o_wide_p (bfd_mach_o_header *header) |
| 61 | { |
| 62 | switch (header->version) |
| 63 | { |
| 64 | case 1: |
| 65 | return FALSE; |
| 66 | case 2: |
| 67 | return TRUE; |
| 68 | default: |
| 69 | BFD_FAIL (); |
| 70 | return FALSE; |
| 71 | } |
| 72 | } |
| 73 | |
| 74 | static INLINE bfd_boolean |
| 75 | bfd_mach_o_wide_p (bfd *abfd) |
| 76 | { |
| 77 | return mach_o_wide_p (&abfd->tdata.mach_o_data->header); |
| 78 | } |
| 79 | |
| 80 | /* Tables to translate well known Mach-O segment/section names to bfd |
| 81 | names. Use of canonical names (such as .text or .debug_frame) is required |
| 82 | by gdb. */ |
| 83 | |
| 84 | struct mach_o_section_name_xlat |
| 85 | { |
| 86 | const char *bfd_name; |
| 87 | const char *mach_o_name; |
| 88 | }; |
| 89 | |
| 90 | static const struct mach_o_section_name_xlat dwarf_section_names_xlat[] = |
| 91 | { |
| 92 | { ".debug_frame", "__debug_frame" }, |
| 93 | { ".debug_info", "__debug_info" }, |
| 94 | { ".debug_abbrev", "__debug_abbrev" }, |
| 95 | { ".debug_aranges", "__debug_aranges" }, |
| 96 | { ".debug_macinfo", "__debug_macinfo" }, |
| 97 | { ".debug_line", "__debug_line" }, |
| 98 | { ".debug_loc", "__debug_loc" }, |
| 99 | { ".debug_pubnames", "__debug_pubnames" }, |
| 100 | { ".debug_pubtypes", "__debug_pubtypes" }, |
| 101 | { ".debug_str", "__debug_str" }, |
| 102 | { ".debug_ranges", "__debug_ranges" }, |
| 103 | { NULL, NULL} |
| 104 | }; |
| 105 | |
| 106 | static const struct mach_o_section_name_xlat text_section_names_xlat[] = |
| 107 | { |
| 108 | { ".text", "__text" }, |
| 109 | { ".cstring", "__cstring" }, |
| 110 | { ".eh_frame", "__eh_frame" }, |
| 111 | { NULL, NULL} |
| 112 | }; |
| 113 | |
| 114 | static const struct mach_o_section_name_xlat data_section_names_xlat[] = |
| 115 | { |
| 116 | { ".data", "__data" }, |
| 117 | { ".bss", "__bss" }, |
| 118 | { NULL, NULL} |
| 119 | }; |
| 120 | |
| 121 | struct mach_o_segment_name_xlat |
| 122 | { |
| 123 | const char *segname; |
| 124 | const struct mach_o_section_name_xlat *sections; |
| 125 | }; |
| 126 | |
| 127 | static const struct mach_o_segment_name_xlat segsec_names_xlat[] = |
| 128 | { |
| 129 | { "__DWARF", dwarf_section_names_xlat }, |
| 130 | { "__TEXT", text_section_names_xlat }, |
| 131 | { "__DATA", data_section_names_xlat }, |
| 132 | { NULL, NULL } |
| 133 | }; |
| 134 | |
| 135 | |
| 136 | /* Mach-O to bfd names. */ |
| 137 | |
| 138 | static char * |
| 139 | bfd_mach_o_convert_section_name_to_bfd (bfd *abfd, bfd_mach_o_section *section) |
| 140 | { |
| 141 | const struct mach_o_segment_name_xlat *seg; |
| 142 | char *res; |
| 143 | unsigned int len; |
| 144 | const char *pfx = ""; |
| 145 | |
| 146 | for (seg = segsec_names_xlat; seg->segname; seg++) |
| 147 | { |
| 148 | if (strcmp (seg->segname, section->segname) == 0) |
| 149 | { |
| 150 | const struct mach_o_section_name_xlat *sec; |
| 151 | |
| 152 | for (sec = seg->sections; sec->mach_o_name; sec++) |
| 153 | { |
| 154 | if (strcmp (sec->mach_o_name, section->sectname) == 0) |
| 155 | { |
| 156 | len = strlen (sec->bfd_name); |
| 157 | res = bfd_alloc (abfd, len + 1); |
| 158 | |
| 159 | if (res == NULL) |
| 160 | return NULL; |
| 161 | strcpy (res, sec->bfd_name); |
| 162 | return res; |
| 163 | } |
| 164 | } |
| 165 | } |
| 166 | } |
| 167 | |
| 168 | len = strlen (section->segname) + 1 |
| 169 | + strlen (section->sectname) + 1; |
| 170 | |
| 171 | /* Put "LC_SEGMENT." prefix if the segment name is weird (ie doesn't start |
| 172 | with an underscore. */ |
| 173 | if (section->segname[0] != '_') |
| 174 | { |
| 175 | static const char seg_pfx[] = "LC_SEGMENT."; |
| 176 | |
| 177 | pfx = seg_pfx; |
| 178 | len += sizeof (seg_pfx) - 1; |
| 179 | } |
| 180 | |
| 181 | res = bfd_alloc (abfd, len); |
| 182 | if (res == NULL) |
| 183 | return NULL; |
| 184 | snprintf (res, len, "%s%s.%s", pfx, section->segname, section->sectname); |
| 185 | return res; |
| 186 | } |
| 187 | |
| 188 | /* Convert a bfd section name to a Mach-O segment + section name. */ |
| 189 | |
| 190 | static void |
| 191 | bfd_mach_o_convert_section_name_to_mach_o (bfd *abfd ATTRIBUTE_UNUSED, |
| 192 | asection *sect, |
| 193 | bfd_mach_o_section *section) |
| 194 | { |
| 195 | const struct mach_o_segment_name_xlat *seg; |
| 196 | const char *name = bfd_get_section_name (abfd, sect); |
| 197 | const char *dot; |
| 198 | unsigned int len; |
| 199 | unsigned int seglen; |
| 200 | unsigned int seclen; |
| 201 | |
| 202 | /* List of well known names. They all start with a dot. */ |
| 203 | if (name[0] == '.') |
| 204 | for (seg = segsec_names_xlat; seg->segname; seg++) |
| 205 | { |
| 206 | const struct mach_o_section_name_xlat *sec; |
| 207 | |
| 208 | for (sec = seg->sections; sec->mach_o_name; sec++) |
| 209 | { |
| 210 | if (strcmp (sec->bfd_name, name) == 0) |
| 211 | { |
| 212 | strcpy (section->segname, seg->segname); |
| 213 | strcpy (section->sectname, sec->mach_o_name); |
| 214 | return; |
| 215 | } |
| 216 | } |
| 217 | } |
| 218 | |
| 219 | /* Strip LC_SEGMENT. prefix. */ |
| 220 | if (strncmp (name, "LC_SEGMENT.", 11) == 0) |
| 221 | name += 11; |
| 222 | |
| 223 | /* Find a dot. */ |
| 224 | dot = strchr (name, '.'); |
| 225 | len = strlen (name); |
| 226 | |
| 227 | /* Try to split name into segment and section names. */ |
| 228 | if (dot && dot != name) |
| 229 | { |
| 230 | seglen = dot - name; |
| 231 | seclen = len - (dot + 1 - name); |
| 232 | |
| 233 | if (seglen < 16 && seclen < 16) |
| 234 | { |
| 235 | memcpy (section->segname, name, seglen); |
| 236 | section->segname[seglen] = 0; |
| 237 | memcpy (section->sectname, dot + 1, seclen); |
| 238 | section->sectname[seclen] = 0; |
| 239 | return; |
| 240 | } |
| 241 | } |
| 242 | |
| 243 | if (len > 16) |
| 244 | len = 16; |
| 245 | memcpy (section->segname, name, len); |
| 246 | section->segname[len] = 0; |
| 247 | memcpy (section->sectname, name, len); |
| 248 | section->sectname[len] = 0; |
| 249 | } |
| 250 | |
| 251 | /* Copy any private info we understand from the input symbol |
| 252 | to the output symbol. */ |
| 253 | |
| 254 | bfd_boolean |
| 255 | bfd_mach_o_bfd_copy_private_symbol_data (bfd *ibfd ATTRIBUTE_UNUSED, |
| 256 | asymbol *isymbol ATTRIBUTE_UNUSED, |
| 257 | bfd *obfd ATTRIBUTE_UNUSED, |
| 258 | asymbol *osymbol ATTRIBUTE_UNUSED) |
| 259 | { |
| 260 | return TRUE; |
| 261 | } |
| 262 | |
| 263 | /* Copy any private info we understand from the input section |
| 264 | to the output section. */ |
| 265 | |
| 266 | bfd_boolean |
| 267 | bfd_mach_o_bfd_copy_private_section_data (bfd *ibfd ATTRIBUTE_UNUSED, |
| 268 | asection *isection ATTRIBUTE_UNUSED, |
| 269 | bfd *obfd ATTRIBUTE_UNUSED, |
| 270 | asection *osection ATTRIBUTE_UNUSED) |
| 271 | { |
| 272 | return TRUE; |
| 273 | } |
| 274 | |
| 275 | /* Copy any private info we understand from the input bfd |
| 276 | to the output bfd. */ |
| 277 | |
| 278 | bfd_boolean |
| 279 | bfd_mach_o_bfd_copy_private_bfd_data (bfd *ibfd, bfd *obfd) |
| 280 | { |
| 281 | if (bfd_get_flavour (ibfd) != bfd_target_mach_o_flavour |
| 282 | || bfd_get_flavour (obfd) != bfd_target_mach_o_flavour) |
| 283 | return TRUE; |
| 284 | |
| 285 | BFD_ASSERT (bfd_mach_o_valid (ibfd)); |
| 286 | BFD_ASSERT (bfd_mach_o_valid (obfd)); |
| 287 | |
| 288 | /* FIXME: copy commands. */ |
| 289 | |
| 290 | return TRUE; |
| 291 | } |
| 292 | |
| 293 | /* Count the total number of symbols. Traverse all sections. */ |
| 294 | |
| 295 | static long |
| 296 | bfd_mach_o_count_symbols (bfd *abfd) |
| 297 | { |
| 298 | bfd_mach_o_data_struct *mdata = NULL; |
| 299 | long nsyms = 0; |
| 300 | unsigned long i; |
| 301 | |
| 302 | BFD_ASSERT (bfd_mach_o_valid (abfd)); |
| 303 | mdata = abfd->tdata.mach_o_data; |
| 304 | |
| 305 | for (i = 0; i < mdata->header.ncmds; i++) |
| 306 | if (mdata->commands[i].type == BFD_MACH_O_LC_SYMTAB) |
| 307 | { |
| 308 | bfd_mach_o_symtab_command *sym = &mdata->commands[i].command.symtab; |
| 309 | nsyms += sym->nsyms; |
| 310 | } |
| 311 | |
| 312 | return nsyms; |
| 313 | } |
| 314 | |
| 315 | long |
| 316 | bfd_mach_o_get_symtab_upper_bound (bfd *abfd) |
| 317 | { |
| 318 | long nsyms = bfd_mach_o_count_symbols (abfd); |
| 319 | |
| 320 | if (nsyms < 0) |
| 321 | return nsyms; |
| 322 | |
| 323 | return ((nsyms + 1) * sizeof (asymbol *)); |
| 324 | } |
| 325 | |
| 326 | long |
| 327 | bfd_mach_o_canonicalize_symtab (bfd *abfd, asymbol **alocation) |
| 328 | { |
| 329 | bfd_mach_o_data_struct *mdata = abfd->tdata.mach_o_data; |
| 330 | long nsyms = bfd_mach_o_count_symbols (abfd); |
| 331 | asymbol **csym = alocation; |
| 332 | unsigned long i, j; |
| 333 | |
| 334 | if (nsyms < 0) |
| 335 | return nsyms; |
| 336 | |
| 337 | for (i = 0; i < mdata->header.ncmds; i++) |
| 338 | { |
| 339 | if (mdata->commands[i].type == BFD_MACH_O_LC_SYMTAB) |
| 340 | { |
| 341 | bfd_mach_o_symtab_command *sym = &mdata->commands[i].command.symtab; |
| 342 | |
| 343 | if (bfd_mach_o_scan_read_symtab_symbols (abfd, &mdata->commands[i].command.symtab) != 0) |
| 344 | { |
| 345 | fprintf (stderr, "bfd_mach_o_canonicalize_symtab: unable to load symbols for section %lu\n", i); |
| 346 | return 0; |
| 347 | } |
| 348 | |
| 349 | BFD_ASSERT (sym->symbols != NULL); |
| 350 | |
| 351 | for (j = 0; j < sym->nsyms; j++) |
| 352 | { |
| 353 | BFD_ASSERT (csym < (alocation + nsyms)); |
| 354 | *csym++ = &sym->symbols[j]; |
| 355 | } |
| 356 | } |
| 357 | } |
| 358 | |
| 359 | *csym++ = NULL; |
| 360 | |
| 361 | return nsyms; |
| 362 | } |
| 363 | |
| 364 | void |
| 365 | bfd_mach_o_get_symbol_info (bfd *abfd ATTRIBUTE_UNUSED, |
| 366 | asymbol *symbol, |
| 367 | symbol_info *ret) |
| 368 | { |
| 369 | bfd_symbol_info (symbol, ret); |
| 370 | } |
| 371 | |
| 372 | void |
| 373 | bfd_mach_o_print_symbol (bfd *abfd, |
| 374 | PTR afile, |
| 375 | asymbol *symbol, |
| 376 | bfd_print_symbol_type how) |
| 377 | { |
| 378 | FILE *file = (FILE *) afile; |
| 379 | unsigned char ntype; |
| 380 | unsigned char nsect; |
| 381 | unsigned int ndesc; |
| 382 | const char *name; |
| 383 | |
| 384 | switch (how) |
| 385 | { |
| 386 | case bfd_print_symbol_name: |
| 387 | fprintf (file, "%s", symbol->name); |
| 388 | break; |
| 389 | default: |
| 390 | bfd_print_symbol_vandf (abfd, (PTR) file, symbol); |
| 391 | ntype = BFD_MACH_O_SYM_NTYPE (symbol); |
| 392 | nsect = BFD_MACH_O_SYM_NSECT (symbol); |
| 393 | ndesc = BFD_MACH_O_SYM_NDESC (symbol); |
| 394 | if (ntype & BFD_MACH_O_N_STAB) |
| 395 | name = bfd_get_stab_name (ntype); |
| 396 | else |
| 397 | switch (ntype & BFD_MACH_O_N_TYPE) |
| 398 | { |
| 399 | case BFD_MACH_O_N_UNDF: |
| 400 | name = "UND"; |
| 401 | break; |
| 402 | case BFD_MACH_O_N_ABS: |
| 403 | name = "ABS"; |
| 404 | break; |
| 405 | case BFD_MACH_O_N_INDR: |
| 406 | name = "INDR"; |
| 407 | break; |
| 408 | case BFD_MACH_O_N_PBUD: |
| 409 | name = "PBUD"; |
| 410 | break; |
| 411 | case BFD_MACH_O_N_SECT: |
| 412 | name = "SECT"; |
| 413 | break; |
| 414 | default: |
| 415 | name = "???"; |
| 416 | break; |
| 417 | } |
| 418 | if (name == NULL) |
| 419 | name = ""; |
| 420 | fprintf (file, " %02x %-6s %02x %04x", ntype, name, nsect, ndesc); |
| 421 | if ((ntype & BFD_MACH_O_N_STAB) == 0 |
| 422 | && (ntype & BFD_MACH_O_N_TYPE) == BFD_MACH_O_N_SECT) |
| 423 | fprintf (file, " %-5s", symbol->section->name); |
| 424 | fprintf (file, " %s", symbol->name); |
| 425 | } |
| 426 | } |
| 427 | |
| 428 | static void |
| 429 | bfd_mach_o_convert_architecture (bfd_mach_o_cpu_type mtype, |
| 430 | bfd_mach_o_cpu_subtype msubtype ATTRIBUTE_UNUSED, |
| 431 | enum bfd_architecture *type, |
| 432 | unsigned long *subtype) |
| 433 | { |
| 434 | *subtype = bfd_arch_unknown; |
| 435 | |
| 436 | switch (mtype) |
| 437 | { |
| 438 | case BFD_MACH_O_CPU_TYPE_VAX: *type = bfd_arch_vax; break; |
| 439 | case BFD_MACH_O_CPU_TYPE_MC680x0: *type = bfd_arch_m68k; break; |
| 440 | case BFD_MACH_O_CPU_TYPE_I386: |
| 441 | *type = bfd_arch_i386; |
| 442 | *subtype = bfd_mach_i386_i386; |
| 443 | break; |
| 444 | case BFD_MACH_O_CPU_TYPE_X86_64: |
| 445 | *type = bfd_arch_i386; |
| 446 | *subtype = bfd_mach_x86_64; |
| 447 | break; |
| 448 | case BFD_MACH_O_CPU_TYPE_MIPS: *type = bfd_arch_mips; break; |
| 449 | case BFD_MACH_O_CPU_TYPE_MC98000: *type = bfd_arch_m98k; break; |
| 450 | case BFD_MACH_O_CPU_TYPE_HPPA: *type = bfd_arch_hppa; break; |
| 451 | case BFD_MACH_O_CPU_TYPE_ARM: *type = bfd_arch_arm; break; |
| 452 | case BFD_MACH_O_CPU_TYPE_MC88000: *type = bfd_arch_m88k; break; |
| 453 | case BFD_MACH_O_CPU_TYPE_SPARC: |
| 454 | *type = bfd_arch_sparc; |
| 455 | *subtype = bfd_mach_sparc; |
| 456 | break; |
| 457 | case BFD_MACH_O_CPU_TYPE_I860: *type = bfd_arch_i860; break; |
| 458 | case BFD_MACH_O_CPU_TYPE_ALPHA: *type = bfd_arch_alpha; break; |
| 459 | case BFD_MACH_O_CPU_TYPE_POWERPC: |
| 460 | *type = bfd_arch_powerpc; |
| 461 | *subtype = bfd_mach_ppc; |
| 462 | break; |
| 463 | case BFD_MACH_O_CPU_TYPE_POWERPC_64: |
| 464 | *type = bfd_arch_powerpc; |
| 465 | *subtype = bfd_mach_ppc64; |
| 466 | break; |
| 467 | default: |
| 468 | *type = bfd_arch_unknown; |
| 469 | break; |
| 470 | } |
| 471 | } |
| 472 | |
| 473 | static bfd_boolean |
| 474 | bfd_mach_o_write_header (bfd *abfd, bfd_mach_o_header *header) |
| 475 | { |
| 476 | unsigned char buf[32]; |
| 477 | unsigned int size; |
| 478 | |
| 479 | size = mach_o_wide_p (header) ? |
| 480 | BFD_MACH_O_HEADER_64_SIZE : BFD_MACH_O_HEADER_SIZE; |
| 481 | |
| 482 | bfd_h_put_32 (abfd, header->magic, buf + 0); |
| 483 | bfd_h_put_32 (abfd, header->cputype, buf + 4); |
| 484 | bfd_h_put_32 (abfd, header->cpusubtype, buf + 8); |
| 485 | bfd_h_put_32 (abfd, header->filetype, buf + 12); |
| 486 | bfd_h_put_32 (abfd, header->ncmds, buf + 16); |
| 487 | bfd_h_put_32 (abfd, header->sizeofcmds, buf + 20); |
| 488 | bfd_h_put_32 (abfd, header->flags, buf + 24); |
| 489 | |
| 490 | if (mach_o_wide_p (header)) |
| 491 | bfd_h_put_32 (abfd, header->reserved, buf + 28); |
| 492 | |
| 493 | if (bfd_seek (abfd, 0, SEEK_SET) != 0 |
| 494 | || bfd_bwrite ((PTR) buf, size, abfd) != size) |
| 495 | return FALSE; |
| 496 | |
| 497 | return TRUE; |
| 498 | } |
| 499 | |
| 500 | static int |
| 501 | bfd_mach_o_scan_write_thread (bfd *abfd, bfd_mach_o_load_command *command) |
| 502 | { |
| 503 | bfd_mach_o_thread_command *cmd = &command->command.thread; |
| 504 | unsigned int i; |
| 505 | unsigned char buf[8]; |
| 506 | bfd_vma offset; |
| 507 | unsigned int nflavours; |
| 508 | |
| 509 | BFD_ASSERT ((command->type == BFD_MACH_O_LC_THREAD) |
| 510 | || (command->type == BFD_MACH_O_LC_UNIXTHREAD)); |
| 511 | |
| 512 | offset = 8; |
| 513 | nflavours = 0; |
| 514 | for (i = 0; i < cmd->nflavours; i++) |
| 515 | { |
| 516 | BFD_ASSERT ((cmd->flavours[i].size % 4) == 0); |
| 517 | BFD_ASSERT (cmd->flavours[i].offset == (command->offset + offset + 8)); |
| 518 | |
| 519 | bfd_h_put_32 (abfd, cmd->flavours[i].flavour, buf); |
| 520 | bfd_h_put_32 (abfd, (cmd->flavours[i].size / 4), buf + 4); |
| 521 | |
| 522 | if (bfd_seek (abfd, command->offset + offset, SEEK_SET) != 0 |
| 523 | || bfd_bwrite ((PTR) buf, 8, abfd) != 8) |
| 524 | return -1; |
| 525 | |
| 526 | offset += cmd->flavours[i].size + 8; |
| 527 | } |
| 528 | |
| 529 | return 0; |
| 530 | } |
| 531 | |
| 532 | static int |
| 533 | bfd_mach_o_scan_write_section_32 (bfd *abfd, |
| 534 | bfd_mach_o_section *section, |
| 535 | bfd_vma offset) |
| 536 | { |
| 537 | unsigned char buf[BFD_MACH_O_SECTION_SIZE]; |
| 538 | |
| 539 | memcpy (buf, section->sectname, 16); |
| 540 | memcpy (buf + 16, section->segname, 16); |
| 541 | bfd_h_put_32 (abfd, section->addr, buf + 32); |
| 542 | bfd_h_put_32 (abfd, section->size, buf + 36); |
| 543 | bfd_h_put_32 (abfd, section->offset, buf + 40); |
| 544 | bfd_h_put_32 (abfd, section->align, buf + 44); |
| 545 | bfd_h_put_32 (abfd, section->reloff, buf + 48); |
| 546 | bfd_h_put_32 (abfd, section->nreloc, buf + 52); |
| 547 | bfd_h_put_32 (abfd, section->flags, buf + 56); |
| 548 | bfd_h_put_32 (abfd, section->reserved1, buf + 60); |
| 549 | bfd_h_put_32 (abfd, section->reserved2, buf + 64); |
| 550 | |
| 551 | if (bfd_seek (abfd, offset, SEEK_SET) != 0 |
| 552 | || (bfd_bwrite ((PTR) buf, BFD_MACH_O_SECTION_SIZE, abfd) |
| 553 | != BFD_MACH_O_SECTION_SIZE)) |
| 554 | return -1; |
| 555 | |
| 556 | return 0; |
| 557 | } |
| 558 | |
| 559 | static int |
| 560 | bfd_mach_o_scan_write_section_64 (bfd *abfd, |
| 561 | bfd_mach_o_section *section, |
| 562 | bfd_vma offset) |
| 563 | { |
| 564 | unsigned char buf[BFD_MACH_O_SECTION_64_SIZE]; |
| 565 | |
| 566 | memcpy (buf, section->sectname, 16); |
| 567 | memcpy (buf + 16, section->segname, 16); |
| 568 | bfd_h_put_64 (abfd, section->addr, buf + 32); |
| 569 | bfd_h_put_64 (abfd, section->size, buf + 40); |
| 570 | bfd_h_put_32 (abfd, section->offset, buf + 48); |
| 571 | bfd_h_put_32 (abfd, section->align, buf + 52); |
| 572 | bfd_h_put_32 (abfd, section->reloff, buf + 56); |
| 573 | bfd_h_put_32 (abfd, section->nreloc, buf + 60); |
| 574 | bfd_h_put_32 (abfd, section->flags, buf + 64); |
| 575 | bfd_h_put_32 (abfd, section->reserved1, buf + 68); |
| 576 | bfd_h_put_32 (abfd, section->reserved2, buf + 72); |
| 577 | bfd_h_put_32 (abfd, section->reserved3, buf + 76); |
| 578 | |
| 579 | if (bfd_seek (abfd, offset, SEEK_SET) != 0 |
| 580 | || (bfd_bwrite ((PTR) buf, BFD_MACH_O_SECTION_64_SIZE, abfd) |
| 581 | != BFD_MACH_O_SECTION_64_SIZE)) |
| 582 | return -1; |
| 583 | |
| 584 | return 0; |
| 585 | } |
| 586 | |
| 587 | static int |
| 588 | bfd_mach_o_scan_write_segment_32 (bfd *abfd, bfd_mach_o_load_command *command) |
| 589 | { |
| 590 | unsigned char buf[BFD_MACH_O_LC_SEGMENT_SIZE]; |
| 591 | bfd_mach_o_segment_command *seg = &command->command.segment; |
| 592 | unsigned long i; |
| 593 | |
| 594 | BFD_ASSERT (command->type == BFD_MACH_O_LC_SEGMENT); |
| 595 | |
| 596 | memcpy (buf, seg->segname, 16); |
| 597 | |
| 598 | bfd_h_put_32 (abfd, seg->vmaddr, buf + 16); |
| 599 | bfd_h_put_32 (abfd, seg->vmsize, buf + 20); |
| 600 | bfd_h_put_32 (abfd, seg->fileoff, buf + 24); |
| 601 | bfd_h_put_32 (abfd, seg->filesize, buf + 28); |
| 602 | bfd_h_put_32 (abfd, seg->maxprot, buf + 32); |
| 603 | bfd_h_put_32 (abfd, seg->initprot, buf + 36); |
| 604 | bfd_h_put_32 (abfd, seg->nsects, buf + 40); |
| 605 | bfd_h_put_32 (abfd, seg->flags, buf + 44); |
| 606 | |
| 607 | if (bfd_seek (abfd, command->offset + 8, SEEK_SET) != 0 |
| 608 | || (bfd_bwrite ((PTR) buf, BFD_MACH_O_LC_SEGMENT_SIZE, abfd) |
| 609 | != BFD_MACH_O_LC_SEGMENT_SIZE)) |
| 610 | return -1; |
| 611 | |
| 612 | for (i = 0; i < seg->nsects; i++) |
| 613 | { |
| 614 | bfd_vma segoff = command->offset + BFD_MACH_O_LC_SEGMENT_SIZE |
| 615 | + (i * BFD_MACH_O_SECTION_SIZE); |
| 616 | |
| 617 | if (bfd_mach_o_scan_write_section_32 (abfd, &seg->sections[i], segoff)) |
| 618 | return -1; |
| 619 | } |
| 620 | return 0; |
| 621 | } |
| 622 | |
| 623 | static int |
| 624 | bfd_mach_o_scan_write_segment_64 (bfd *abfd, bfd_mach_o_load_command *command) |
| 625 | { |
| 626 | unsigned char buf[BFD_MACH_O_LC_SEGMENT_64_SIZE]; |
| 627 | bfd_mach_o_segment_command *seg = &command->command.segment; |
| 628 | unsigned long i; |
| 629 | |
| 630 | BFD_ASSERT (command->type == BFD_MACH_O_LC_SEGMENT_64); |
| 631 | |
| 632 | memcpy (buf, seg->segname, 16); |
| 633 | |
| 634 | bfd_h_put_64 (abfd, seg->vmaddr, buf + 16); |
| 635 | bfd_h_put_64 (abfd, seg->vmsize, buf + 24); |
| 636 | bfd_h_put_64 (abfd, seg->fileoff, buf + 32); |
| 637 | bfd_h_put_64 (abfd, seg->filesize, buf + 40); |
| 638 | bfd_h_put_32 (abfd, seg->maxprot, buf + 48); |
| 639 | bfd_h_put_32 (abfd, seg->initprot, buf + 52); |
| 640 | bfd_h_put_32 (abfd, seg->nsects, buf + 56); |
| 641 | bfd_h_put_32 (abfd, seg->flags, buf + 60); |
| 642 | |
| 643 | if (bfd_seek (abfd, command->offset + 8, SEEK_SET) != 0 |
| 644 | || (bfd_bwrite ((PTR) buf, BFD_MACH_O_LC_SEGMENT_64_SIZE, abfd) |
| 645 | != BFD_MACH_O_LC_SEGMENT_64_SIZE)) |
| 646 | return -1; |
| 647 | |
| 648 | for (i = 0; i < seg->nsects; i++) |
| 649 | { |
| 650 | bfd_vma segoff = command->offset + BFD_MACH_O_LC_SEGMENT_64_SIZE |
| 651 | + (i * BFD_MACH_O_SECTION_64_SIZE); |
| 652 | |
| 653 | if (bfd_mach_o_scan_write_section_64 (abfd, &seg->sections[i], segoff)) |
| 654 | return -1; |
| 655 | } |
| 656 | return 0; |
| 657 | } |
| 658 | |
| 659 | static bfd_boolean |
| 660 | bfd_mach_o_scan_write_symtab (bfd *abfd, bfd_mach_o_load_command *command) |
| 661 | { |
| 662 | bfd_mach_o_symtab_command *sym = &command->command.symtab; |
| 663 | unsigned char buf[16]; |
| 664 | unsigned long i; |
| 665 | unsigned int wide = bfd_mach_o_wide_p (abfd); |
| 666 | unsigned int symlen = wide ? 16 : 12; |
| 667 | struct bfd_strtab_hash *strtab; |
| 668 | asymbol **symbols = bfd_get_outsymbols (abfd); |
| 669 | |
| 670 | BFD_ASSERT (command->type == BFD_MACH_O_LC_SYMTAB); |
| 671 | |
| 672 | /* Write the symbols first. */ |
| 673 | if (bfd_seek (abfd, sym->symoff, SEEK_SET) != 0) |
| 674 | return FALSE; |
| 675 | |
| 676 | sym->nsyms = bfd_get_symcount (abfd); |
| 677 | |
| 678 | strtab = _bfd_stringtab_init (); |
| 679 | if (strtab == NULL) |
| 680 | return FALSE; |
| 681 | |
| 682 | for (i = 0; i < sym->nsyms; i++) |
| 683 | { |
| 684 | unsigned char buf[16]; |
| 685 | unsigned char ntype; |
| 686 | unsigned char nsect; |
| 687 | short ndesc; |
| 688 | bfd_size_type index; |
| 689 | asymbol *s = symbols[i]; |
| 690 | |
| 691 | /* Compute index. */ |
| 692 | /* An index of 0 always means the empty string. */ |
| 693 | if (s->name == 0 || s->name[0] == '\0') |
| 694 | index = 0; |
| 695 | else |
| 696 | { |
| 697 | index = _bfd_stringtab_add (strtab, s->name, TRUE, FALSE); |
| 698 | if (index == (bfd_size_type) -1) |
| 699 | goto err; |
| 700 | } |
| 701 | |
| 702 | /* Get back-end specific values. */ |
| 703 | ntype = BFD_MACH_O_SYM_NTYPE (s); |
| 704 | nsect = BFD_MACH_O_SYM_NSECT (s); |
| 705 | ndesc = BFD_MACH_O_SYM_NDESC (s); |
| 706 | |
| 707 | if (ntype == BFD_MACH_O_N_UNDF && !(s->flags & BSF_DEBUGGING)) |
| 708 | { |
| 709 | /* As genuine Mach-O symbols type shouldn't be N_UNDF (undefined |
| 710 | symbols should be N_UNDEF | N_EXT), we suppose the back-end |
| 711 | values haven't been set. */ |
| 712 | if (s->flags & (BSF_LOCAL | BSF_GLOBAL)) |
| 713 | { |
| 714 | if (s->section == bfd_abs_section_ptr) |
| 715 | ntype = BFD_MACH_O_N_ABS; |
| 716 | else if (s->section == bfd_und_section_ptr) |
| 717 | ntype = BFD_MACH_O_N_UNDF; |
| 718 | else if (s->section == bfd_com_section_ptr) |
| 719 | ntype = BFD_MACH_O_N_UNDF | BFD_MACH_O_N_EXT; |
| 720 | else |
| 721 | ntype = BFD_MACH_O_N_SECT; |
| 722 | |
| 723 | ntype |= (s->flags & BSF_GLOBAL) ? BFD_MACH_O_N_EXT : 0; |
| 724 | } |
| 725 | } |
| 726 | |
| 727 | /* Compute section index. */ |
| 728 | if (s->section != bfd_abs_section_ptr |
| 729 | && s->section != bfd_und_section_ptr |
| 730 | && s->section != bfd_com_section_ptr) |
| 731 | nsect = s->section->target_index; |
| 732 | |
| 733 | bfd_h_put_32 (abfd, index, buf); |
| 734 | bfd_h_put_8 (abfd, ntype, buf + 4); |
| 735 | bfd_h_put_8 (abfd, nsect, buf + 5); |
| 736 | bfd_h_put_16 (abfd, ndesc, buf + 6); |
| 737 | if (wide) |
| 738 | bfd_h_put_64 (abfd, s->section->vma + s->value, buf + 8); |
| 739 | else |
| 740 | bfd_h_put_32 (abfd, s->section->vma + s->value, buf + 8); |
| 741 | |
| 742 | if (bfd_bwrite ((PTR) buf, symlen, abfd) != symlen) |
| 743 | goto err; |
| 744 | } |
| 745 | sym->strsize = _bfd_stringtab_size (strtab); |
| 746 | sym->stroff = sym->symoff + sym->nsyms * symlen; |
| 747 | |
| 748 | if (_bfd_stringtab_emit (abfd, strtab) != TRUE) |
| 749 | goto err; |
| 750 | _bfd_stringtab_free (strtab); |
| 751 | |
| 752 | /* The command. */ |
| 753 | bfd_h_put_32 (abfd, sym->symoff, buf); |
| 754 | bfd_h_put_32 (abfd, sym->nsyms, buf + 4); |
| 755 | bfd_h_put_32 (abfd, sym->stroff, buf + 8); |
| 756 | bfd_h_put_32 (abfd, sym->strsize, buf + 12); |
| 757 | |
| 758 | if (bfd_seek (abfd, command->offset + 8, SEEK_SET) != 0 |
| 759 | || bfd_bwrite ((PTR) buf, 16, abfd) != 16) |
| 760 | return FALSE; |
| 761 | |
| 762 | return TRUE; |
| 763 | |
| 764 | err: |
| 765 | _bfd_stringtab_free (strtab); |
| 766 | return FALSE; |
| 767 | } |
| 768 | |
| 769 | bfd_boolean |
| 770 | bfd_mach_o_write_contents (bfd *abfd) |
| 771 | { |
| 772 | unsigned int i; |
| 773 | bfd_mach_o_data_struct *mdata = abfd->tdata.mach_o_data; |
| 774 | |
| 775 | /* Now write header information. */ |
| 776 | if (mdata->header.filetype == 0) |
| 777 | { |
| 778 | if (abfd->flags & EXEC_P) |
| 779 | mdata->header.filetype = BFD_MACH_O_MH_EXECUTE; |
| 780 | else if (abfd->flags & DYNAMIC) |
| 781 | mdata->header.filetype = BFD_MACH_O_MH_DYLIB; |
| 782 | else |
| 783 | mdata->header.filetype = BFD_MACH_O_MH_OBJECT; |
| 784 | } |
| 785 | if (!bfd_mach_o_write_header (abfd, &mdata->header)) |
| 786 | return FALSE; |
| 787 | |
| 788 | for (i = 0; i < mdata->header.ncmds; i++) |
| 789 | { |
| 790 | unsigned char buf[8]; |
| 791 | bfd_mach_o_load_command *cur = &mdata->commands[i]; |
| 792 | unsigned long typeflag; |
| 793 | |
| 794 | typeflag = cur->type | (cur->type_required ? BFD_MACH_O_LC_REQ_DYLD : 0); |
| 795 | |
| 796 | bfd_h_put_32 (abfd, typeflag, buf); |
| 797 | bfd_h_put_32 (abfd, cur->len, buf + 4); |
| 798 | |
| 799 | if (bfd_seek (abfd, cur->offset, SEEK_SET) != 0 |
| 800 | || bfd_bwrite ((PTR) buf, 8, abfd) != 8) |
| 801 | return FALSE; |
| 802 | |
| 803 | switch (cur->type) |
| 804 | { |
| 805 | case BFD_MACH_O_LC_SEGMENT: |
| 806 | if (bfd_mach_o_scan_write_segment_32 (abfd, cur) != 0) |
| 807 | return FALSE; |
| 808 | break; |
| 809 | case BFD_MACH_O_LC_SEGMENT_64: |
| 810 | if (bfd_mach_o_scan_write_segment_64 (abfd, cur) != 0) |
| 811 | return FALSE; |
| 812 | break; |
| 813 | case BFD_MACH_O_LC_SYMTAB: |
| 814 | if (!bfd_mach_o_scan_write_symtab (abfd, cur)) |
| 815 | return FALSE; |
| 816 | break; |
| 817 | case BFD_MACH_O_LC_SYMSEG: |
| 818 | break; |
| 819 | case BFD_MACH_O_LC_THREAD: |
| 820 | case BFD_MACH_O_LC_UNIXTHREAD: |
| 821 | if (bfd_mach_o_scan_write_thread (abfd, cur) != 0) |
| 822 | return FALSE; |
| 823 | break; |
| 824 | case BFD_MACH_O_LC_LOADFVMLIB: |
| 825 | case BFD_MACH_O_LC_IDFVMLIB: |
| 826 | case BFD_MACH_O_LC_IDENT: |
| 827 | case BFD_MACH_O_LC_FVMFILE: |
| 828 | case BFD_MACH_O_LC_PREPAGE: |
| 829 | case BFD_MACH_O_LC_DYSYMTAB: |
| 830 | case BFD_MACH_O_LC_LOAD_DYLIB: |
| 831 | case BFD_MACH_O_LC_LOAD_WEAK_DYLIB: |
| 832 | case BFD_MACH_O_LC_ID_DYLIB: |
| 833 | case BFD_MACH_O_LC_LOAD_DYLINKER: |
| 834 | case BFD_MACH_O_LC_ID_DYLINKER: |
| 835 | case BFD_MACH_O_LC_PREBOUND_DYLIB: |
| 836 | case BFD_MACH_O_LC_ROUTINES: |
| 837 | case BFD_MACH_O_LC_SUB_FRAMEWORK: |
| 838 | break; |
| 839 | default: |
| 840 | fprintf (stderr, |
| 841 | "unable to write unknown load command 0x%lx\n", |
| 842 | (unsigned long) cur->type); |
| 843 | return FALSE; |
| 844 | } |
| 845 | } |
| 846 | |
| 847 | return TRUE; |
| 848 | } |
| 849 | |
| 850 | /* Build Mach-O load commands from the sections. */ |
| 851 | |
| 852 | bfd_boolean |
| 853 | bfd_mach_o_build_commands (bfd *abfd) |
| 854 | { |
| 855 | bfd_mach_o_data_struct *mdata = bfd_get_mach_o_data (abfd); |
| 856 | unsigned int wide = mach_o_wide_p (&mdata->header); |
| 857 | bfd_mach_o_segment_command *seg; |
| 858 | bfd_mach_o_section *sections; |
| 859 | asection *sec; |
| 860 | file_ptr filepos; |
| 861 | bfd_mach_o_load_command *cmd; |
| 862 | bfd_mach_o_load_command *symtab_cmd; |
| 863 | int target_index; |
| 864 | |
| 865 | /* Return now if commands are already built. */ |
| 866 | if (mdata->header.ncmds) |
| 867 | return FALSE; |
| 868 | |
| 869 | /* Very simple version: 1 command (segment) containing all sections. */ |
| 870 | mdata->header.ncmds = 2; |
| 871 | mdata->commands = bfd_alloc (abfd, mdata->header.ncmds |
| 872 | * sizeof (bfd_mach_o_load_command)); |
| 873 | if (mdata->commands == NULL) |
| 874 | return FALSE; |
| 875 | cmd = &mdata->commands[0]; |
| 876 | seg = &cmd->command.segment; |
| 877 | |
| 878 | seg->nsects = bfd_count_sections (abfd); |
| 879 | sections = bfd_alloc (abfd, seg->nsects * sizeof (bfd_mach_o_section)); |
| 880 | if (sections == NULL) |
| 881 | return FALSE; |
| 882 | seg->sections = sections; |
| 883 | |
| 884 | /* Set segment command. */ |
| 885 | if (wide) |
| 886 | { |
| 887 | cmd->type = BFD_MACH_O_LC_SEGMENT_64; |
| 888 | cmd->offset = BFD_MACH_O_HEADER_64_SIZE; |
| 889 | cmd->len = BFD_MACH_O_LC_SEGMENT_64_SIZE |
| 890 | + BFD_MACH_O_SECTION_64_SIZE * seg->nsects; |
| 891 | } |
| 892 | else |
| 893 | { |
| 894 | cmd->type = BFD_MACH_O_LC_SEGMENT; |
| 895 | cmd->offset = BFD_MACH_O_HEADER_SIZE; |
| 896 | cmd->len = BFD_MACH_O_LC_SEGMENT_SIZE |
| 897 | + BFD_MACH_O_SECTION_SIZE * seg->nsects; |
| 898 | } |
| 899 | cmd->type_required = FALSE; |
| 900 | mdata->header.sizeofcmds = cmd->len; |
| 901 | filepos = cmd->offset + cmd->len; |
| 902 | |
| 903 | /* Set symtab command. */ |
| 904 | symtab_cmd = &mdata->commands[1]; |
| 905 | |
| 906 | symtab_cmd->type = BFD_MACH_O_LC_SYMTAB; |
| 907 | symtab_cmd->offset = cmd->offset + cmd->len; |
| 908 | symtab_cmd->len = 6 * 4; |
| 909 | symtab_cmd->type_required = FALSE; |
| 910 | |
| 911 | mdata->header.sizeofcmds += symtab_cmd->len; |
| 912 | filepos += symtab_cmd->len; |
| 913 | |
| 914 | /* Fill segment command. */ |
| 915 | memset (seg->segname, 0, sizeof (seg->segname)); |
| 916 | seg->vmaddr = 0; |
| 917 | seg->fileoff = filepos; |
| 918 | seg->filesize = 0; |
| 919 | seg->maxprot = BFD_MACH_O_PROT_READ | BFD_MACH_O_PROT_WRITE |
| 920 | | BFD_MACH_O_PROT_EXECUTE; |
| 921 | seg->initprot = seg->maxprot; |
| 922 | seg->flags = 0; |
| 923 | |
| 924 | /* Create Mach-O sections. */ |
| 925 | target_index = 0; |
| 926 | for (sec = abfd->sections; sec; sec = sec->next) |
| 927 | { |
| 928 | sections->bfdsection = sec; |
| 929 | bfd_mach_o_convert_section_name_to_mach_o (abfd, sec, sections); |
| 930 | sections->addr = bfd_get_section_vma (abfd, sec); |
| 931 | sections->size = bfd_get_section_size (sec); |
| 932 | sections->align = bfd_get_section_alignment (abfd, sec); |
| 933 | |
| 934 | filepos = (filepos + ((file_ptr) 1 << sections->align) - 1) |
| 935 | & ((file_ptr) -1 << sections->align); |
| 936 | sections->offset = filepos; |
| 937 | sections->reloff = 0; |
| 938 | sections->nreloc = 0; |
| 939 | sections->reserved1 = 0; |
| 940 | sections->reserved2 = 0; |
| 941 | sections->reserved3 = 0; |
| 942 | |
| 943 | sec->filepos = filepos; |
| 944 | sec->target_index = ++target_index; |
| 945 | |
| 946 | filepos += sections->size; |
| 947 | sections++; |
| 948 | } |
| 949 | seg->filesize = filepos - seg->fileoff; |
| 950 | seg->vmsize = seg->filesize; |
| 951 | |
| 952 | /* Fill symtab command. |
| 953 | Note: we don't know the number of symbols. |
| 954 | Also, symtab is at the end since the length of the symbol table (and |
| 955 | string table) is not known. */ |
| 956 | symtab_cmd->command.symtab.symoff = filepos; |
| 957 | |
| 958 | return TRUE; |
| 959 | } |
| 960 | |
| 961 | /* Set the contents of a section. */ |
| 962 | |
| 963 | bfd_boolean |
| 964 | bfd_mach_o_set_section_contents (bfd *abfd, |
| 965 | asection *section, |
| 966 | const void * location, |
| 967 | file_ptr offset, |
| 968 | bfd_size_type count) |
| 969 | { |
| 970 | file_ptr pos; |
| 971 | |
| 972 | /* This must be done first, because bfd_set_section_contents is |
| 973 | going to set output_has_begun to TRUE. */ |
| 974 | if (! abfd->output_has_begun && ! bfd_mach_o_build_commands (abfd)) |
| 975 | return FALSE; |
| 976 | |
| 977 | if (count == 0) |
| 978 | return TRUE; |
| 979 | |
| 980 | pos = section->filepos + offset; |
| 981 | if (bfd_seek (abfd, pos, SEEK_SET) != 0 |
| 982 | || bfd_bwrite (location, count, abfd) != count) |
| 983 | return FALSE; |
| 984 | |
| 985 | return TRUE; |
| 986 | } |
| 987 | |
| 988 | int |
| 989 | bfd_mach_o_sizeof_headers (bfd *a ATTRIBUTE_UNUSED, |
| 990 | struct bfd_link_info *info ATTRIBUTE_UNUSED) |
| 991 | { |
| 992 | return 0; |
| 993 | } |
| 994 | |
| 995 | /* Make an empty symbol. This is required only because |
| 996 | bfd_make_section_anyway wants to create a symbol for the section. */ |
| 997 | |
| 998 | asymbol * |
| 999 | bfd_mach_o_make_empty_symbol (bfd *abfd) |
| 1000 | { |
| 1001 | asymbol *new; |
| 1002 | |
| 1003 | new = bfd_zalloc (abfd, sizeof (* new)); |
| 1004 | if (new == NULL) |
| 1005 | return new; |
| 1006 | new->the_bfd = abfd; |
| 1007 | return new; |
| 1008 | } |
| 1009 | |
| 1010 | static bfd_boolean |
| 1011 | bfd_mach_o_read_header (bfd *abfd, bfd_mach_o_header *header) |
| 1012 | { |
| 1013 | unsigned char buf[32]; |
| 1014 | unsigned int size; |
| 1015 | bfd_vma (*get32) (const void *) = NULL; |
| 1016 | |
| 1017 | /* Just read the magic number. */ |
| 1018 | if (bfd_seek (abfd, 0, SEEK_SET) != 0 |
| 1019 | || bfd_bread ((PTR) buf, 4, abfd) != 4) |
| 1020 | return FALSE; |
| 1021 | |
| 1022 | if (bfd_getb32 (buf) == BFD_MACH_O_MH_MAGIC) |
| 1023 | { |
| 1024 | header->byteorder = BFD_ENDIAN_BIG; |
| 1025 | header->magic = BFD_MACH_O_MH_MAGIC; |
| 1026 | header->version = 1; |
| 1027 | get32 = bfd_getb32; |
| 1028 | } |
| 1029 | else if (bfd_getl32 (buf) == BFD_MACH_O_MH_MAGIC) |
| 1030 | { |
| 1031 | header->byteorder = BFD_ENDIAN_LITTLE; |
| 1032 | header->magic = BFD_MACH_O_MH_MAGIC; |
| 1033 | header->version = 1; |
| 1034 | get32 = bfd_getl32; |
| 1035 | } |
| 1036 | else if (bfd_getb32 (buf) == BFD_MACH_O_MH_MAGIC_64) |
| 1037 | { |
| 1038 | header->byteorder = BFD_ENDIAN_BIG; |
| 1039 | header->magic = BFD_MACH_O_MH_MAGIC_64; |
| 1040 | header->version = 2; |
| 1041 | get32 = bfd_getb32; |
| 1042 | } |
| 1043 | else if (bfd_getl32 (buf) == BFD_MACH_O_MH_MAGIC_64) |
| 1044 | { |
| 1045 | header->byteorder = BFD_ENDIAN_LITTLE; |
| 1046 | header->magic = BFD_MACH_O_MH_MAGIC_64; |
| 1047 | header->version = 2; |
| 1048 | get32 = bfd_getl32; |
| 1049 | } |
| 1050 | else |
| 1051 | { |
| 1052 | header->byteorder = BFD_ENDIAN_UNKNOWN; |
| 1053 | return FALSE; |
| 1054 | } |
| 1055 | |
| 1056 | /* Once the size of the header is known, read the full header. */ |
| 1057 | size = mach_o_wide_p (header) ? |
| 1058 | BFD_MACH_O_HEADER_64_SIZE : BFD_MACH_O_HEADER_SIZE; |
| 1059 | |
| 1060 | if (bfd_seek (abfd, 0, SEEK_SET) != 0 |
| 1061 | || bfd_bread ((PTR) buf, size, abfd) != size) |
| 1062 | return FALSE; |
| 1063 | |
| 1064 | header->cputype = (*get32) (buf + 4); |
| 1065 | header->cpusubtype = (*get32) (buf + 8); |
| 1066 | header->filetype = (*get32) (buf + 12); |
| 1067 | header->ncmds = (*get32) (buf + 16); |
| 1068 | header->sizeofcmds = (*get32) (buf + 20); |
| 1069 | header->flags = (*get32) (buf + 24); |
| 1070 | |
| 1071 | if (mach_o_wide_p (header)) |
| 1072 | header->reserved = (*get32) (buf + 28); |
| 1073 | |
| 1074 | return TRUE; |
| 1075 | } |
| 1076 | |
| 1077 | static asection * |
| 1078 | bfd_mach_o_make_bfd_section (bfd *abfd, bfd_mach_o_section *section, |
| 1079 | unsigned long prot) |
| 1080 | { |
| 1081 | asection *bfdsec; |
| 1082 | char *sname; |
| 1083 | flagword flags; |
| 1084 | |
| 1085 | sname = bfd_mach_o_convert_section_name_to_bfd (abfd, section); |
| 1086 | if (sname == NULL) |
| 1087 | return NULL; |
| 1088 | |
| 1089 | if (section->flags & BFD_MACH_O_S_ATTR_DEBUG) |
| 1090 | flags = SEC_HAS_CONTENTS | SEC_DEBUGGING; |
| 1091 | else |
| 1092 | { |
| 1093 | flags = SEC_ALLOC; |
| 1094 | if ((section->flags & BFD_MACH_O_SECTION_TYPE_MASK) |
| 1095 | != BFD_MACH_O_S_ZEROFILL) |
| 1096 | { |
| 1097 | flags |= SEC_HAS_CONTENTS | SEC_LOAD; |
| 1098 | if (prot & BFD_MACH_O_PROT_EXECUTE) |
| 1099 | flags |= SEC_CODE; |
| 1100 | if (prot & BFD_MACH_O_PROT_WRITE) |
| 1101 | flags |= SEC_DATA; |
| 1102 | else if (prot & BFD_MACH_O_PROT_READ) |
| 1103 | flags |= SEC_READONLY; |
| 1104 | } |
| 1105 | } |
| 1106 | bfdsec = bfd_make_section_anyway_with_flags (abfd, sname, flags); |
| 1107 | if (bfdsec == NULL) |
| 1108 | return NULL; |
| 1109 | |
| 1110 | bfdsec->vma = section->addr; |
| 1111 | bfdsec->lma = section->addr; |
| 1112 | bfdsec->size = section->size; |
| 1113 | bfdsec->filepos = section->offset; |
| 1114 | bfdsec->alignment_power = section->align; |
| 1115 | bfdsec->segment_mark = 0; |
| 1116 | |
| 1117 | return bfdsec; |
| 1118 | } |
| 1119 | |
| 1120 | static int |
| 1121 | bfd_mach_o_scan_read_section_32 (bfd *abfd, |
| 1122 | bfd_mach_o_section *section, |
| 1123 | bfd_vma offset, |
| 1124 | unsigned long prot) |
| 1125 | { |
| 1126 | unsigned char buf[BFD_MACH_O_SECTION_SIZE]; |
| 1127 | |
| 1128 | if (bfd_seek (abfd, offset, SEEK_SET) != 0 |
| 1129 | || (bfd_bread ((PTR) buf, BFD_MACH_O_SECTION_SIZE, abfd) |
| 1130 | != BFD_MACH_O_SECTION_SIZE)) |
| 1131 | return -1; |
| 1132 | |
| 1133 | memcpy (section->sectname, buf, 16); |
| 1134 | section->sectname[16] = '\0'; |
| 1135 | memcpy (section->segname, buf + 16, 16); |
| 1136 | section->segname[16] = '\0'; |
| 1137 | section->addr = bfd_h_get_32 (abfd, buf + 32); |
| 1138 | section->size = bfd_h_get_32 (abfd, buf + 36); |
| 1139 | section->offset = bfd_h_get_32 (abfd, buf + 40); |
| 1140 | section->align = bfd_h_get_32 (abfd, buf + 44); |
| 1141 | section->reloff = bfd_h_get_32 (abfd, buf + 48); |
| 1142 | section->nreloc = bfd_h_get_32 (abfd, buf + 52); |
| 1143 | section->flags = bfd_h_get_32 (abfd, buf + 56); |
| 1144 | section->reserved1 = bfd_h_get_32 (abfd, buf + 60); |
| 1145 | section->reserved2 = bfd_h_get_32 (abfd, buf + 64); |
| 1146 | section->reserved3 = 0; |
| 1147 | section->bfdsection = bfd_mach_o_make_bfd_section (abfd, section, prot); |
| 1148 | |
| 1149 | if (section->bfdsection == NULL) |
| 1150 | return -1; |
| 1151 | |
| 1152 | return 0; |
| 1153 | } |
| 1154 | |
| 1155 | static int |
| 1156 | bfd_mach_o_scan_read_section_64 (bfd *abfd, |
| 1157 | bfd_mach_o_section *section, |
| 1158 | bfd_vma offset, |
| 1159 | unsigned long prot) |
| 1160 | { |
| 1161 | unsigned char buf[BFD_MACH_O_SECTION_64_SIZE]; |
| 1162 | |
| 1163 | if (bfd_seek (abfd, offset, SEEK_SET) != 0 |
| 1164 | || (bfd_bread ((PTR) buf, BFD_MACH_O_SECTION_64_SIZE, abfd) |
| 1165 | != BFD_MACH_O_SECTION_64_SIZE)) |
| 1166 | return -1; |
| 1167 | |
| 1168 | memcpy (section->sectname, buf, 16); |
| 1169 | section->sectname[16] = '\0'; |
| 1170 | memcpy (section->segname, buf + 16, 16); |
| 1171 | section->segname[16] = '\0'; |
| 1172 | section->addr = bfd_h_get_64 (abfd, buf + 32); |
| 1173 | section->size = bfd_h_get_64 (abfd, buf + 40); |
| 1174 | section->offset = bfd_h_get_32 (abfd, buf + 48); |
| 1175 | section->align = bfd_h_get_32 (abfd, buf + 52); |
| 1176 | section->reloff = bfd_h_get_32 (abfd, buf + 56); |
| 1177 | section->nreloc = bfd_h_get_32 (abfd, buf + 60); |
| 1178 | section->flags = bfd_h_get_32 (abfd, buf + 64); |
| 1179 | section->reserved1 = bfd_h_get_32 (abfd, buf + 68); |
| 1180 | section->reserved2 = bfd_h_get_32 (abfd, buf + 72); |
| 1181 | section->reserved3 = bfd_h_get_32 (abfd, buf + 76); |
| 1182 | section->bfdsection = bfd_mach_o_make_bfd_section (abfd, section, prot); |
| 1183 | |
| 1184 | if (section->bfdsection == NULL) |
| 1185 | return -1; |
| 1186 | |
| 1187 | return 0; |
| 1188 | } |
| 1189 | |
| 1190 | static int |
| 1191 | bfd_mach_o_scan_read_section (bfd *abfd, |
| 1192 | bfd_mach_o_section *section, |
| 1193 | bfd_vma offset, |
| 1194 | unsigned long prot, |
| 1195 | unsigned int wide) |
| 1196 | { |
| 1197 | if (wide) |
| 1198 | return bfd_mach_o_scan_read_section_64 (abfd, section, offset, prot); |
| 1199 | else |
| 1200 | return bfd_mach_o_scan_read_section_32 (abfd, section, offset, prot); |
| 1201 | } |
| 1202 | |
| 1203 | int |
| 1204 | bfd_mach_o_scan_read_symtab_symbol (bfd *abfd, |
| 1205 | bfd_mach_o_symtab_command *sym, |
| 1206 | asymbol *s, |
| 1207 | unsigned long i) |
| 1208 | { |
| 1209 | bfd_mach_o_data_struct *mdata = abfd->tdata.mach_o_data; |
| 1210 | unsigned int wide = mach_o_wide_p (&mdata->header); |
| 1211 | unsigned int symwidth = wide ? 16 : 12; |
| 1212 | bfd_vma symoff = sym->symoff + (i * symwidth); |
| 1213 | unsigned char buf[16]; |
| 1214 | unsigned char type = -1; |
| 1215 | unsigned char section = -1; |
| 1216 | short desc = -1; |
| 1217 | symvalue value = -1; |
| 1218 | unsigned long stroff = -1; |
| 1219 | unsigned int symtype = -1; |
| 1220 | |
| 1221 | BFD_ASSERT (sym->strtab != NULL); |
| 1222 | |
| 1223 | if (bfd_seek (abfd, symoff, SEEK_SET) != 0 |
| 1224 | || bfd_bread ((PTR) buf, symwidth, abfd) != symwidth) |
| 1225 | { |
| 1226 | fprintf (stderr, "bfd_mach_o_scan_read_symtab_symbol: unable to read %d bytes at %lu\n", |
| 1227 | symwidth, (unsigned long) symoff); |
| 1228 | return -1; |
| 1229 | } |
| 1230 | |
| 1231 | stroff = bfd_h_get_32 (abfd, buf); |
| 1232 | type = bfd_h_get_8 (abfd, buf + 4); |
| 1233 | symtype = type & BFD_MACH_O_N_TYPE; |
| 1234 | section = bfd_h_get_8 (abfd, buf + 5); |
| 1235 | desc = bfd_h_get_16 (abfd, buf + 6); |
| 1236 | if (wide) |
| 1237 | value = bfd_h_get_64 (abfd, buf + 8); |
| 1238 | else |
| 1239 | value = bfd_h_get_32 (abfd, buf + 8); |
| 1240 | |
| 1241 | if (stroff >= sym->strsize) |
| 1242 | { |
| 1243 | fprintf (stderr, "bfd_mach_o_scan_read_symtab_symbol: symbol name out of range (%lu >= %lu)\n", |
| 1244 | (unsigned long) stroff, (unsigned long) sym->strsize); |
| 1245 | return -1; |
| 1246 | } |
| 1247 | |
| 1248 | s->the_bfd = abfd; |
| 1249 | s->name = sym->strtab + stroff; |
| 1250 | s->value = value; |
| 1251 | s->udata.i = (type << 24) | (section << 16) | desc; |
| 1252 | s->flags = 0x0; |
| 1253 | |
| 1254 | if (type & BFD_MACH_O_N_STAB) |
| 1255 | { |
| 1256 | s->flags |= BSF_DEBUGGING; |
| 1257 | s->section = bfd_und_section_ptr; |
| 1258 | switch (type) |
| 1259 | { |
| 1260 | case N_FUN: |
| 1261 | case N_STSYM: |
| 1262 | case N_LCSYM: |
| 1263 | case N_BNSYM: |
| 1264 | case N_SLINE: |
| 1265 | case N_ENSYM: |
| 1266 | case N_ECOMM: |
| 1267 | case N_ECOML: |
| 1268 | case N_GSYM: |
| 1269 | if ((section > 0) && (section <= mdata->nsects)) |
| 1270 | { |
| 1271 | s->section = mdata->sections[section - 1]->bfdsection; |
| 1272 | s->value = s->value - mdata->sections[section - 1]->addr; |
| 1273 | } |
| 1274 | break; |
| 1275 | } |
| 1276 | } |
| 1277 | else |
| 1278 | { |
| 1279 | if (type & BFD_MACH_O_N_PEXT) |
| 1280 | s->flags |= BSF_GLOBAL; |
| 1281 | |
| 1282 | if (type & BFD_MACH_O_N_EXT) |
| 1283 | s->flags |= BSF_GLOBAL; |
| 1284 | |
| 1285 | if (!(type & (BFD_MACH_O_N_PEXT | BFD_MACH_O_N_EXT))) |
| 1286 | s->flags |= BSF_LOCAL; |
| 1287 | |
| 1288 | switch (symtype) |
| 1289 | { |
| 1290 | case BFD_MACH_O_N_UNDF: |
| 1291 | if (type == (BFD_MACH_O_N_UNDF | BFD_MACH_O_N_EXT) |
| 1292 | && s->value != 0) |
| 1293 | { |
| 1294 | /* A common symbol. */ |
| 1295 | s->section = bfd_com_section_ptr; |
| 1296 | s->flags = BSF_NO_FLAGS; |
| 1297 | } |
| 1298 | else |
| 1299 | s->section = bfd_und_section_ptr; |
| 1300 | break; |
| 1301 | case BFD_MACH_O_N_PBUD: |
| 1302 | s->section = bfd_und_section_ptr; |
| 1303 | break; |
| 1304 | case BFD_MACH_O_N_ABS: |
| 1305 | s->section = bfd_abs_section_ptr; |
| 1306 | break; |
| 1307 | case BFD_MACH_O_N_SECT: |
| 1308 | if ((section > 0) && (section <= mdata->nsects)) |
| 1309 | { |
| 1310 | s->section = mdata->sections[section - 1]->bfdsection; |
| 1311 | s->value = s->value - mdata->sections[section - 1]->addr; |
| 1312 | } |
| 1313 | else |
| 1314 | { |
| 1315 | /* Mach-O uses 0 to mean "no section"; not an error. */ |
| 1316 | if (section != 0) |
| 1317 | { |
| 1318 | fprintf (stderr, "bfd_mach_o_scan_read_symtab_symbol: " |
| 1319 | "symbol \"%s\" specified invalid section %d (max %lu): setting to undefined\n", |
| 1320 | s->name, section, mdata->nsects); |
| 1321 | } |
| 1322 | s->section = bfd_und_section_ptr; |
| 1323 | } |
| 1324 | break; |
| 1325 | case BFD_MACH_O_N_INDR: |
| 1326 | fprintf (stderr, "bfd_mach_o_scan_read_symtab_symbol: " |
| 1327 | "symbol \"%s\" is unsupported 'indirect' reference: setting to undefined\n", |
| 1328 | s->name); |
| 1329 | s->section = bfd_und_section_ptr; |
| 1330 | break; |
| 1331 | default: |
| 1332 | fprintf (stderr, "bfd_mach_o_scan_read_symtab_symbol: " |
| 1333 | "symbol \"%s\" specified invalid type field 0x%x: setting to undefined\n", |
| 1334 | s->name, symtype); |
| 1335 | s->section = bfd_und_section_ptr; |
| 1336 | break; |
| 1337 | } |
| 1338 | } |
| 1339 | |
| 1340 | return 0; |
| 1341 | } |
| 1342 | |
| 1343 | int |
| 1344 | bfd_mach_o_scan_read_symtab_strtab (bfd *abfd, |
| 1345 | bfd_mach_o_symtab_command *sym) |
| 1346 | { |
| 1347 | BFD_ASSERT (sym->strtab == NULL); |
| 1348 | |
| 1349 | if (abfd->flags & BFD_IN_MEMORY) |
| 1350 | { |
| 1351 | struct bfd_in_memory *b; |
| 1352 | |
| 1353 | b = (struct bfd_in_memory *) abfd->iostream; |
| 1354 | |
| 1355 | if ((sym->stroff + sym->strsize) > b->size) |
| 1356 | { |
| 1357 | bfd_set_error (bfd_error_file_truncated); |
| 1358 | return -1; |
| 1359 | } |
| 1360 | sym->strtab = (char *) b->buffer + sym->stroff; |
| 1361 | return 0; |
| 1362 | } |
| 1363 | |
| 1364 | sym->strtab = bfd_alloc (abfd, sym->strsize); |
| 1365 | if (sym->strtab == NULL) |
| 1366 | return -1; |
| 1367 | |
| 1368 | if (bfd_seek (abfd, sym->stroff, SEEK_SET) != 0 |
| 1369 | || bfd_bread ((PTR) sym->strtab, sym->strsize, abfd) != sym->strsize) |
| 1370 | { |
| 1371 | fprintf (stderr, "bfd_mach_o_scan_read_symtab_strtab: unable to read %lu bytes at %lu\n", |
| 1372 | sym->strsize, sym->stroff); |
| 1373 | return -1; |
| 1374 | } |
| 1375 | |
| 1376 | return 0; |
| 1377 | } |
| 1378 | |
| 1379 | int |
| 1380 | bfd_mach_o_scan_read_symtab_symbols (bfd *abfd, |
| 1381 | bfd_mach_o_symtab_command *sym) |
| 1382 | { |
| 1383 | unsigned long i; |
| 1384 | int ret; |
| 1385 | |
| 1386 | BFD_ASSERT (sym->symbols == NULL); |
| 1387 | sym->symbols = bfd_alloc (abfd, sym->nsyms * sizeof (asymbol)); |
| 1388 | |
| 1389 | if (sym->symbols == NULL) |
| 1390 | { |
| 1391 | fprintf (stderr, "bfd_mach_o_scan_read_symtab_symbols: unable to allocate memory for symbols\n"); |
| 1392 | return -1; |
| 1393 | } |
| 1394 | |
| 1395 | ret = bfd_mach_o_scan_read_symtab_strtab (abfd, sym); |
| 1396 | if (ret != 0) |
| 1397 | return ret; |
| 1398 | |
| 1399 | for (i = 0; i < sym->nsyms; i++) |
| 1400 | { |
| 1401 | ret = bfd_mach_o_scan_read_symtab_symbol (abfd, sym, &sym->symbols[i], i); |
| 1402 | if (ret != 0) |
| 1403 | return ret; |
| 1404 | } |
| 1405 | |
| 1406 | return 0; |
| 1407 | } |
| 1408 | |
| 1409 | int |
| 1410 | bfd_mach_o_scan_read_dysymtab_symbol (bfd *abfd, |
| 1411 | bfd_mach_o_dysymtab_command *dysym, |
| 1412 | bfd_mach_o_symtab_command *sym, |
| 1413 | asymbol *s, |
| 1414 | unsigned long i) |
| 1415 | { |
| 1416 | unsigned long isymoff = dysym->indirectsymoff + (i * 4); |
| 1417 | unsigned long symindex; |
| 1418 | unsigned char buf[4]; |
| 1419 | |
| 1420 | BFD_ASSERT (i < dysym->nindirectsyms); |
| 1421 | |
| 1422 | if (bfd_seek (abfd, isymoff, SEEK_SET) != 0 |
| 1423 | || bfd_bread ((PTR) buf, 4, abfd) != 4) |
| 1424 | { |
| 1425 | fprintf (stderr, "bfd_mach_o_scan_read_dysymtab_symbol: unable to read %lu bytes at %lu\n", |
| 1426 | (unsigned long) 4, isymoff); |
| 1427 | return -1; |
| 1428 | } |
| 1429 | symindex = bfd_h_get_32 (abfd, buf); |
| 1430 | |
| 1431 | return bfd_mach_o_scan_read_symtab_symbol (abfd, sym, s, symindex); |
| 1432 | } |
| 1433 | |
| 1434 | static const char * |
| 1435 | bfd_mach_o_i386_flavour_string (unsigned int flavour) |
| 1436 | { |
| 1437 | switch ((int) flavour) |
| 1438 | { |
| 1439 | case BFD_MACH_O_x86_THREAD_STATE32: return "x86_THREAD_STATE32"; |
| 1440 | case BFD_MACH_O_x86_FLOAT_STATE32: return "x86_FLOAT_STATE32"; |
| 1441 | case BFD_MACH_O_x86_EXCEPTION_STATE32: return "x86_EXCEPTION_STATE32"; |
| 1442 | case BFD_MACH_O_x86_THREAD_STATE64: return "x86_THREAD_STATE64"; |
| 1443 | case BFD_MACH_O_x86_FLOAT_STATE64: return "x86_FLOAT_STATE64"; |
| 1444 | case BFD_MACH_O_x86_EXCEPTION_STATE64: return "x86_EXCEPTION_STATE64"; |
| 1445 | case BFD_MACH_O_x86_THREAD_STATE: return "x86_THREAD_STATE"; |
| 1446 | case BFD_MACH_O_x86_FLOAT_STATE: return "x86_FLOAT_STATE"; |
| 1447 | case BFD_MACH_O_x86_EXCEPTION_STATE: return "x86_EXCEPTION_STATE"; |
| 1448 | case BFD_MACH_O_x86_DEBUG_STATE32: return "x86_DEBUG_STATE32"; |
| 1449 | case BFD_MACH_O_x86_DEBUG_STATE64: return "x86_DEBUG_STATE64"; |
| 1450 | case BFD_MACH_O_x86_DEBUG_STATE: return "x86_DEBUG_STATE"; |
| 1451 | case BFD_MACH_O_THREAD_STATE_NONE: return "THREAD_STATE_NONE"; |
| 1452 | default: return "UNKNOWN"; |
| 1453 | } |
| 1454 | } |
| 1455 | |
| 1456 | static const char * |
| 1457 | bfd_mach_o_ppc_flavour_string (unsigned int flavour) |
| 1458 | { |
| 1459 | switch ((int) flavour) |
| 1460 | { |
| 1461 | case BFD_MACH_O_PPC_THREAD_STATE: return "PPC_THREAD_STATE"; |
| 1462 | case BFD_MACH_O_PPC_FLOAT_STATE: return "PPC_FLOAT_STATE"; |
| 1463 | case BFD_MACH_O_PPC_EXCEPTION_STATE: return "PPC_EXCEPTION_STATE"; |
| 1464 | case BFD_MACH_O_PPC_VECTOR_STATE: return "PPC_VECTOR_STATE"; |
| 1465 | default: return "UNKNOWN"; |
| 1466 | } |
| 1467 | } |
| 1468 | |
| 1469 | static int |
| 1470 | bfd_mach_o_scan_read_dylinker (bfd *abfd, |
| 1471 | bfd_mach_o_load_command *command) |
| 1472 | { |
| 1473 | bfd_mach_o_dylinker_command *cmd = &command->command.dylinker; |
| 1474 | unsigned char buf[4]; |
| 1475 | unsigned int nameoff; |
| 1476 | asection *bfdsec; |
| 1477 | char *sname; |
| 1478 | const char *prefix; |
| 1479 | |
| 1480 | BFD_ASSERT ((command->type == BFD_MACH_O_LC_ID_DYLINKER) |
| 1481 | || (command->type == BFD_MACH_O_LC_LOAD_DYLINKER)); |
| 1482 | |
| 1483 | if (bfd_seek (abfd, command->offset + 8, SEEK_SET) != 0 |
| 1484 | || bfd_bread ((PTR) buf, 4, abfd) != 4) |
| 1485 | return -1; |
| 1486 | |
| 1487 | nameoff = bfd_h_get_32 (abfd, buf + 0); |
| 1488 | |
| 1489 | cmd->name_offset = command->offset + nameoff; |
| 1490 | cmd->name_len = command->len - nameoff; |
| 1491 | |
| 1492 | if (command->type == BFD_MACH_O_LC_LOAD_DYLINKER) |
| 1493 | prefix = "LC_LOAD_DYLINKER"; |
| 1494 | else if (command->type == BFD_MACH_O_LC_ID_DYLINKER) |
| 1495 | prefix = "LC_ID_DYLINKER"; |
| 1496 | else |
| 1497 | abort (); |
| 1498 | |
| 1499 | sname = bfd_alloc (abfd, strlen (prefix) + 1); |
| 1500 | if (sname == NULL) |
| 1501 | return -1; |
| 1502 | strcpy (sname, prefix); |
| 1503 | |
| 1504 | bfdsec = bfd_make_section_anyway_with_flags (abfd, sname, SEC_HAS_CONTENTS); |
| 1505 | if (bfdsec == NULL) |
| 1506 | return -1; |
| 1507 | |
| 1508 | bfdsec->vma = 0; |
| 1509 | bfdsec->lma = 0; |
| 1510 | bfdsec->size = command->len - nameoff; |
| 1511 | bfdsec->filepos = command->offset + nameoff; |
| 1512 | bfdsec->alignment_power = 0; |
| 1513 | |
| 1514 | cmd->section = bfdsec; |
| 1515 | |
| 1516 | return 0; |
| 1517 | } |
| 1518 | |
| 1519 | static int |
| 1520 | bfd_mach_o_scan_read_dylib (bfd *abfd, bfd_mach_o_load_command *command) |
| 1521 | { |
| 1522 | bfd_mach_o_dylib_command *cmd = &command->command.dylib; |
| 1523 | unsigned char buf[16]; |
| 1524 | unsigned int nameoff; |
| 1525 | asection *bfdsec; |
| 1526 | char *sname; |
| 1527 | const char *prefix; |
| 1528 | |
| 1529 | BFD_ASSERT ((command->type == BFD_MACH_O_LC_ID_DYLIB) |
| 1530 | || (command->type == BFD_MACH_O_LC_LOAD_DYLIB) |
| 1531 | || (command->type == BFD_MACH_O_LC_LOAD_WEAK_DYLIB)); |
| 1532 | |
| 1533 | if (bfd_seek (abfd, command->offset + 8, SEEK_SET) != 0 |
| 1534 | || bfd_bread ((PTR) buf, 16, abfd) != 16) |
| 1535 | return -1; |
| 1536 | |
| 1537 | nameoff = bfd_h_get_32 (abfd, buf + 0); |
| 1538 | cmd->timestamp = bfd_h_get_32 (abfd, buf + 4); |
| 1539 | cmd->current_version = bfd_h_get_32 (abfd, buf + 8); |
| 1540 | cmd->compatibility_version = bfd_h_get_32 (abfd, buf + 12); |
| 1541 | |
| 1542 | cmd->name_offset = command->offset + nameoff; |
| 1543 | cmd->name_len = command->len - nameoff; |
| 1544 | |
| 1545 | if (command->type == BFD_MACH_O_LC_LOAD_DYLIB) |
| 1546 | prefix = "LC_LOAD_DYLIB"; |
| 1547 | else if (command->type == BFD_MACH_O_LC_LOAD_WEAK_DYLIB) |
| 1548 | prefix = "LC_LOAD_WEAK_DYLIB"; |
| 1549 | else if (command->type == BFD_MACH_O_LC_ID_DYLIB) |
| 1550 | prefix = "LC_ID_DYLIB"; |
| 1551 | else |
| 1552 | abort (); |
| 1553 | |
| 1554 | sname = bfd_alloc (abfd, strlen (prefix) + 1); |
| 1555 | if (sname == NULL) |
| 1556 | return -1; |
| 1557 | strcpy (sname, prefix); |
| 1558 | |
| 1559 | bfdsec = bfd_make_section_anyway_with_flags (abfd, sname, SEC_HAS_CONTENTS); |
| 1560 | if (bfdsec == NULL) |
| 1561 | return -1; |
| 1562 | |
| 1563 | bfdsec->vma = 0; |
| 1564 | bfdsec->lma = 0; |
| 1565 | bfdsec->size = command->len - 8; |
| 1566 | bfdsec->filepos = command->offset + 8; |
| 1567 | bfdsec->alignment_power = 0; |
| 1568 | |
| 1569 | cmd->section = bfdsec; |
| 1570 | |
| 1571 | return 0; |
| 1572 | } |
| 1573 | |
| 1574 | static int |
| 1575 | bfd_mach_o_scan_read_prebound_dylib (bfd *abfd ATTRIBUTE_UNUSED, |
| 1576 | bfd_mach_o_load_command *command ATTRIBUTE_UNUSED) |
| 1577 | { |
| 1578 | /* bfd_mach_o_prebound_dylib_command *cmd = &command->command.prebound_dylib; */ |
| 1579 | |
| 1580 | BFD_ASSERT (command->type == BFD_MACH_O_LC_PREBOUND_DYLIB); |
| 1581 | return 0; |
| 1582 | } |
| 1583 | |
| 1584 | static int |
| 1585 | bfd_mach_o_scan_read_thread (bfd *abfd, bfd_mach_o_load_command *command) |
| 1586 | { |
| 1587 | bfd_mach_o_data_struct *mdata = NULL; |
| 1588 | bfd_mach_o_thread_command *cmd = &command->command.thread; |
| 1589 | unsigned char buf[8]; |
| 1590 | bfd_vma offset; |
| 1591 | unsigned int nflavours; |
| 1592 | unsigned int i; |
| 1593 | |
| 1594 | BFD_ASSERT ((command->type == BFD_MACH_O_LC_THREAD) |
| 1595 | || (command->type == BFD_MACH_O_LC_UNIXTHREAD)); |
| 1596 | |
| 1597 | BFD_ASSERT (bfd_mach_o_valid (abfd)); |
| 1598 | mdata = abfd->tdata.mach_o_data; |
| 1599 | |
| 1600 | offset = 8; |
| 1601 | nflavours = 0; |
| 1602 | while (offset != command->len) |
| 1603 | { |
| 1604 | if (offset >= command->len) |
| 1605 | return -1; |
| 1606 | |
| 1607 | if (bfd_seek (abfd, command->offset + offset, SEEK_SET) != 0 |
| 1608 | || bfd_bread ((PTR) buf, 8, abfd) != 8) |
| 1609 | return -1; |
| 1610 | |
| 1611 | offset += 8 + bfd_h_get_32 (abfd, buf + 4) * 4; |
| 1612 | nflavours++; |
| 1613 | } |
| 1614 | |
| 1615 | cmd->flavours = bfd_alloc (abfd, nflavours * sizeof (bfd_mach_o_thread_flavour)); |
| 1616 | if (cmd->flavours == NULL) |
| 1617 | return -1; |
| 1618 | cmd->nflavours = nflavours; |
| 1619 | |
| 1620 | offset = 8; |
| 1621 | nflavours = 0; |
| 1622 | while (offset != command->len) |
| 1623 | { |
| 1624 | if (offset >= command->len) |
| 1625 | return -1; |
| 1626 | |
| 1627 | if (nflavours >= cmd->nflavours) |
| 1628 | return -1; |
| 1629 | |
| 1630 | if (bfd_seek (abfd, command->offset + offset, SEEK_SET) != 0 |
| 1631 | || bfd_bread ((PTR) buf, 8, abfd) != 8) |
| 1632 | return -1; |
| 1633 | |
| 1634 | cmd->flavours[nflavours].flavour = bfd_h_get_32 (abfd, buf); |
| 1635 | cmd->flavours[nflavours].offset = command->offset + offset + 8; |
| 1636 | cmd->flavours[nflavours].size = bfd_h_get_32 (abfd, buf + 4) * 4; |
| 1637 | offset += cmd->flavours[nflavours].size + 8; |
| 1638 | nflavours++; |
| 1639 | } |
| 1640 | |
| 1641 | for (i = 0; i < nflavours; i++) |
| 1642 | { |
| 1643 | asection *bfdsec; |
| 1644 | unsigned int snamelen; |
| 1645 | char *sname; |
| 1646 | const char *flavourstr; |
| 1647 | const char *prefix = "LC_THREAD"; |
| 1648 | unsigned int j = 0; |
| 1649 | |
| 1650 | switch (mdata->header.cputype) |
| 1651 | { |
| 1652 | case BFD_MACH_O_CPU_TYPE_POWERPC: |
| 1653 | case BFD_MACH_O_CPU_TYPE_POWERPC_64: |
| 1654 | flavourstr = bfd_mach_o_ppc_flavour_string (cmd->flavours[i].flavour); |
| 1655 | break; |
| 1656 | case BFD_MACH_O_CPU_TYPE_I386: |
| 1657 | case BFD_MACH_O_CPU_TYPE_X86_64: |
| 1658 | flavourstr = bfd_mach_o_i386_flavour_string (cmd->flavours[i].flavour); |
| 1659 | break; |
| 1660 | default: |
| 1661 | flavourstr = "UNKNOWN_ARCHITECTURE"; |
| 1662 | break; |
| 1663 | } |
| 1664 | |
| 1665 | snamelen = strlen (prefix) + 1 + 20 + 1 + strlen (flavourstr) + 1; |
| 1666 | sname = bfd_alloc (abfd, snamelen); |
| 1667 | if (sname == NULL) |
| 1668 | return -1; |
| 1669 | |
| 1670 | for (;;) |
| 1671 | { |
| 1672 | sprintf (sname, "%s.%s.%u", prefix, flavourstr, j); |
| 1673 | if (bfd_get_section_by_name (abfd, sname) == NULL) |
| 1674 | break; |
| 1675 | j++; |
| 1676 | } |
| 1677 | |
| 1678 | bfdsec = bfd_make_section_with_flags (abfd, sname, SEC_HAS_CONTENTS); |
| 1679 | |
| 1680 | bfdsec->vma = 0; |
| 1681 | bfdsec->lma = 0; |
| 1682 | bfdsec->size = cmd->flavours[i].size; |
| 1683 | bfdsec->filepos = cmd->flavours[i].offset; |
| 1684 | bfdsec->alignment_power = 0x0; |
| 1685 | |
| 1686 | cmd->section = bfdsec; |
| 1687 | } |
| 1688 | |
| 1689 | return 0; |
| 1690 | } |
| 1691 | |
| 1692 | static int |
| 1693 | bfd_mach_o_scan_read_dysymtab (bfd *abfd, bfd_mach_o_load_command *command) |
| 1694 | { |
| 1695 | bfd_mach_o_dysymtab_command *seg = &command->command.dysymtab; |
| 1696 | unsigned char buf[72]; |
| 1697 | |
| 1698 | BFD_ASSERT (command->type == BFD_MACH_O_LC_DYSYMTAB); |
| 1699 | |
| 1700 | if (bfd_seek (abfd, command->offset + 8, SEEK_SET) != 0 |
| 1701 | || bfd_bread ((PTR) buf, 72, abfd) != 72) |
| 1702 | return -1; |
| 1703 | |
| 1704 | seg->ilocalsym = bfd_h_get_32 (abfd, buf + 0); |
| 1705 | seg->nlocalsym = bfd_h_get_32 (abfd, buf + 4); |
| 1706 | seg->iextdefsym = bfd_h_get_32 (abfd, buf + 8); |
| 1707 | seg->nextdefsym = bfd_h_get_32 (abfd, buf + 12); |
| 1708 | seg->iundefsym = bfd_h_get_32 (abfd, buf + 16); |
| 1709 | seg->nundefsym = bfd_h_get_32 (abfd, buf + 20); |
| 1710 | seg->tocoff = bfd_h_get_32 (abfd, buf + 24); |
| 1711 | seg->ntoc = bfd_h_get_32 (abfd, buf + 28); |
| 1712 | seg->modtaboff = bfd_h_get_32 (abfd, buf + 32); |
| 1713 | seg->nmodtab = bfd_h_get_32 (abfd, buf + 36); |
| 1714 | seg->extrefsymoff = bfd_h_get_32 (abfd, buf + 40); |
| 1715 | seg->nextrefsyms = bfd_h_get_32 (abfd, buf + 44); |
| 1716 | seg->indirectsymoff = bfd_h_get_32 (abfd, buf + 48); |
| 1717 | seg->nindirectsyms = bfd_h_get_32 (abfd, buf + 52); |
| 1718 | seg->extreloff = bfd_h_get_32 (abfd, buf + 56); |
| 1719 | seg->nextrel = bfd_h_get_32 (abfd, buf + 60); |
| 1720 | seg->locreloff = bfd_h_get_32 (abfd, buf + 64); |
| 1721 | seg->nlocrel = bfd_h_get_32 (abfd, buf + 68); |
| 1722 | |
| 1723 | return 0; |
| 1724 | } |
| 1725 | |
| 1726 | static int |
| 1727 | bfd_mach_o_scan_read_symtab (bfd *abfd, bfd_mach_o_load_command *command) |
| 1728 | { |
| 1729 | bfd_mach_o_symtab_command *seg = &command->command.symtab; |
| 1730 | unsigned char buf[16]; |
| 1731 | |
| 1732 | BFD_ASSERT (command->type == BFD_MACH_O_LC_SYMTAB); |
| 1733 | |
| 1734 | if (bfd_seek (abfd, command->offset + 8, SEEK_SET) != 0 |
| 1735 | || bfd_bread ((PTR) buf, 16, abfd) != 16) |
| 1736 | return -1; |
| 1737 | |
| 1738 | seg->symoff = bfd_h_get_32 (abfd, buf); |
| 1739 | seg->nsyms = bfd_h_get_32 (abfd, buf + 4); |
| 1740 | seg->stroff = bfd_h_get_32 (abfd, buf + 8); |
| 1741 | seg->strsize = bfd_h_get_32 (abfd, buf + 12); |
| 1742 | seg->symbols = NULL; |
| 1743 | seg->strtab = NULL; |
| 1744 | |
| 1745 | if (seg->nsyms != 0) |
| 1746 | abfd->flags |= HAS_SYMS; |
| 1747 | |
| 1748 | return 0; |
| 1749 | } |
| 1750 | |
| 1751 | static int |
| 1752 | bfd_mach_o_scan_read_uuid (bfd *abfd, bfd_mach_o_load_command *command) |
| 1753 | { |
| 1754 | bfd_mach_o_uuid_command *cmd = &command->command.uuid; |
| 1755 | asection *bfdsec; |
| 1756 | char *sname; |
| 1757 | static const char prefix[] = "LC_UUID"; |
| 1758 | |
| 1759 | BFD_ASSERT (command->type == BFD_MACH_O_LC_UUID); |
| 1760 | |
| 1761 | if (bfd_seek (abfd, command->offset + 8, SEEK_SET) != 0 |
| 1762 | || bfd_bread ((PTR) cmd->uuid, 16, abfd) != 16) |
| 1763 | return -1; |
| 1764 | |
| 1765 | sname = bfd_alloc (abfd, strlen (prefix) + 1); |
| 1766 | if (sname == NULL) |
| 1767 | return -1; |
| 1768 | strcpy (sname, prefix); |
| 1769 | |
| 1770 | bfdsec = bfd_make_section_anyway_with_flags (abfd, sname, SEC_HAS_CONTENTS); |
| 1771 | if (bfdsec == NULL) |
| 1772 | return -1; |
| 1773 | |
| 1774 | bfdsec->vma = 0; |
| 1775 | bfdsec->lma = 0; |
| 1776 | bfdsec->size = command->len - 8; |
| 1777 | bfdsec->filepos = command->offset + 8; |
| 1778 | bfdsec->alignment_power = 0; |
| 1779 | |
| 1780 | cmd->section = bfdsec; |
| 1781 | |
| 1782 | return 0; |
| 1783 | } |
| 1784 | |
| 1785 | static int |
| 1786 | bfd_mach_o_scan_read_segment (bfd *abfd, |
| 1787 | bfd_mach_o_load_command *command, |
| 1788 | unsigned int wide) |
| 1789 | { |
| 1790 | unsigned char buf[64]; |
| 1791 | bfd_mach_o_segment_command *seg = &command->command.segment; |
| 1792 | unsigned long i; |
| 1793 | |
| 1794 | if (wide) |
| 1795 | { |
| 1796 | BFD_ASSERT (command->type == BFD_MACH_O_LC_SEGMENT_64); |
| 1797 | |
| 1798 | if (bfd_seek (abfd, command->offset + 8, SEEK_SET) != 0 |
| 1799 | || bfd_bread ((PTR) buf, 64, abfd) != 64) |
| 1800 | return -1; |
| 1801 | |
| 1802 | memcpy (seg->segname, buf, 16); |
| 1803 | seg->segname[16] = '\0'; |
| 1804 | |
| 1805 | seg->vmaddr = bfd_h_get_64 (abfd, buf + 16); |
| 1806 | seg->vmsize = bfd_h_get_64 (abfd, buf + 24); |
| 1807 | seg->fileoff = bfd_h_get_64 (abfd, buf + 32); |
| 1808 | seg->filesize = bfd_h_get_64 (abfd, buf + 40); |
| 1809 | seg->maxprot = bfd_h_get_32 (abfd, buf + 48); |
| 1810 | seg->initprot = bfd_h_get_32 (abfd, buf + 52); |
| 1811 | seg->nsects = bfd_h_get_32 (abfd, buf + 56); |
| 1812 | seg->flags = bfd_h_get_32 (abfd, buf + 60); |
| 1813 | } |
| 1814 | else |
| 1815 | { |
| 1816 | BFD_ASSERT (command->type == BFD_MACH_O_LC_SEGMENT); |
| 1817 | |
| 1818 | if (bfd_seek (abfd, command->offset + 8, SEEK_SET) != 0 |
| 1819 | || bfd_bread ((PTR) buf, 48, abfd) != 48) |
| 1820 | return -1; |
| 1821 | |
| 1822 | memcpy (seg->segname, buf, 16); |
| 1823 | seg->segname[16] = '\0'; |
| 1824 | |
| 1825 | seg->vmaddr = bfd_h_get_32 (abfd, buf + 16); |
| 1826 | seg->vmsize = bfd_h_get_32 (abfd, buf + 20); |
| 1827 | seg->fileoff = bfd_h_get_32 (abfd, buf + 24); |
| 1828 | seg->filesize = bfd_h_get_32 (abfd, buf + 28); |
| 1829 | seg->maxprot = bfd_h_get_32 (abfd, buf + 32); |
| 1830 | seg->initprot = bfd_h_get_32 (abfd, buf + 36); |
| 1831 | seg->nsects = bfd_h_get_32 (abfd, buf + 40); |
| 1832 | seg->flags = bfd_h_get_32 (abfd, buf + 44); |
| 1833 | } |
| 1834 | |
| 1835 | if (seg->nsects != 0) |
| 1836 | { |
| 1837 | seg->sections = bfd_alloc (abfd, seg->nsects |
| 1838 | * sizeof (bfd_mach_o_section)); |
| 1839 | if (seg->sections == NULL) |
| 1840 | return -1; |
| 1841 | |
| 1842 | for (i = 0; i < seg->nsects; i++) |
| 1843 | { |
| 1844 | bfd_vma segoff; |
| 1845 | if (wide) |
| 1846 | segoff = command->offset + BFD_MACH_O_LC_SEGMENT_64_SIZE |
| 1847 | + (i * BFD_MACH_O_SECTION_64_SIZE); |
| 1848 | else |
| 1849 | segoff = command->offset + BFD_MACH_O_LC_SEGMENT_SIZE |
| 1850 | + (i * BFD_MACH_O_SECTION_SIZE); |
| 1851 | |
| 1852 | if (bfd_mach_o_scan_read_section |
| 1853 | (abfd, &seg->sections[i], segoff, seg->initprot, wide) != 0) |
| 1854 | return -1; |
| 1855 | } |
| 1856 | } |
| 1857 | |
| 1858 | return 0; |
| 1859 | } |
| 1860 | |
| 1861 | static int |
| 1862 | bfd_mach_o_scan_read_segment_32 (bfd *abfd, bfd_mach_o_load_command *command) |
| 1863 | { |
| 1864 | return bfd_mach_o_scan_read_segment (abfd, command, 0); |
| 1865 | } |
| 1866 | |
| 1867 | static int |
| 1868 | bfd_mach_o_scan_read_segment_64 (bfd *abfd, bfd_mach_o_load_command *command) |
| 1869 | { |
| 1870 | return bfd_mach_o_scan_read_segment (abfd, command, 1); |
| 1871 | } |
| 1872 | |
| 1873 | static int |
| 1874 | bfd_mach_o_scan_read_command (bfd *abfd, bfd_mach_o_load_command *command) |
| 1875 | { |
| 1876 | unsigned char buf[8]; |
| 1877 | |
| 1878 | if (bfd_seek (abfd, command->offset, SEEK_SET) != 0 |
| 1879 | || bfd_bread ((PTR) buf, 8, abfd) != 8) |
| 1880 | return -1; |
| 1881 | |
| 1882 | command->type = bfd_h_get_32 (abfd, buf) & ~BFD_MACH_O_LC_REQ_DYLD; |
| 1883 | command->type_required = (bfd_h_get_32 (abfd, buf) & BFD_MACH_O_LC_REQ_DYLD |
| 1884 | ? TRUE : FALSE); |
| 1885 | command->len = bfd_h_get_32 (abfd, buf + 4); |
| 1886 | |
| 1887 | switch (command->type) |
| 1888 | { |
| 1889 | case BFD_MACH_O_LC_SEGMENT: |
| 1890 | if (bfd_mach_o_scan_read_segment_32 (abfd, command) != 0) |
| 1891 | return -1; |
| 1892 | break; |
| 1893 | case BFD_MACH_O_LC_SEGMENT_64: |
| 1894 | if (bfd_mach_o_scan_read_segment_64 (abfd, command) != 0) |
| 1895 | return -1; |
| 1896 | break; |
| 1897 | case BFD_MACH_O_LC_SYMTAB: |
| 1898 | if (bfd_mach_o_scan_read_symtab (abfd, command) != 0) |
| 1899 | return -1; |
| 1900 | break; |
| 1901 | case BFD_MACH_O_LC_SYMSEG: |
| 1902 | break; |
| 1903 | case BFD_MACH_O_LC_THREAD: |
| 1904 | case BFD_MACH_O_LC_UNIXTHREAD: |
| 1905 | if (bfd_mach_o_scan_read_thread (abfd, command) != 0) |
| 1906 | return -1; |
| 1907 | break; |
| 1908 | case BFD_MACH_O_LC_LOAD_DYLINKER: |
| 1909 | case BFD_MACH_O_LC_ID_DYLINKER: |
| 1910 | if (bfd_mach_o_scan_read_dylinker (abfd, command) != 0) |
| 1911 | return -1; |
| 1912 | break; |
| 1913 | case BFD_MACH_O_LC_LOAD_DYLIB: |
| 1914 | case BFD_MACH_O_LC_ID_DYLIB: |
| 1915 | case BFD_MACH_O_LC_LOAD_WEAK_DYLIB: |
| 1916 | if (bfd_mach_o_scan_read_dylib (abfd, command) != 0) |
| 1917 | return -1; |
| 1918 | break; |
| 1919 | case BFD_MACH_O_LC_PREBOUND_DYLIB: |
| 1920 | if (bfd_mach_o_scan_read_prebound_dylib (abfd, command) != 0) |
| 1921 | return -1; |
| 1922 | break; |
| 1923 | case BFD_MACH_O_LC_LOADFVMLIB: |
| 1924 | case BFD_MACH_O_LC_IDFVMLIB: |
| 1925 | case BFD_MACH_O_LC_IDENT: |
| 1926 | case BFD_MACH_O_LC_FVMFILE: |
| 1927 | case BFD_MACH_O_LC_PREPAGE: |
| 1928 | case BFD_MACH_O_LC_ROUTINES: |
| 1929 | case BFD_MACH_O_LC_SUB_FRAMEWORK: |
| 1930 | break; |
| 1931 | case BFD_MACH_O_LC_DYSYMTAB: |
| 1932 | if (bfd_mach_o_scan_read_dysymtab (abfd, command) != 0) |
| 1933 | return -1; |
| 1934 | break; |
| 1935 | case BFD_MACH_O_LC_SUB_UMBRELLA: |
| 1936 | case BFD_MACH_O_LC_SUB_CLIENT: |
| 1937 | case BFD_MACH_O_LC_SUB_LIBRARY: |
| 1938 | case BFD_MACH_O_LC_TWOLEVEL_HINTS: |
| 1939 | case BFD_MACH_O_LC_PREBIND_CKSUM: |
| 1940 | break; |
| 1941 | case BFD_MACH_O_LC_UUID: |
| 1942 | if (bfd_mach_o_scan_read_uuid (abfd, command) != 0) |
| 1943 | return -1; |
| 1944 | break; |
| 1945 | case BFD_MACH_O_LC_CODE_SIGNATURE: |
| 1946 | case BFD_MACH_O_LC_SEGMENT_SPLIT_INFO: |
| 1947 | case BFD_MACH_O_LC_REEXPORT_DYLIB: |
| 1948 | break; |
| 1949 | default: |
| 1950 | fprintf (stderr, "unable to read unknown load command 0x%lx\n", |
| 1951 | (unsigned long) command->type); |
| 1952 | break; |
| 1953 | } |
| 1954 | |
| 1955 | return 0; |
| 1956 | } |
| 1957 | |
| 1958 | static void |
| 1959 | bfd_mach_o_flatten_sections (bfd *abfd) |
| 1960 | { |
| 1961 | bfd_mach_o_data_struct *mdata = abfd->tdata.mach_o_data; |
| 1962 | long csect = 0; |
| 1963 | unsigned long i, j; |
| 1964 | |
| 1965 | /* Count total number of sections. */ |
| 1966 | mdata->nsects = 0; |
| 1967 | |
| 1968 | for (i = 0; i < mdata->header.ncmds; i++) |
| 1969 | { |
| 1970 | if (mdata->commands[i].type == BFD_MACH_O_LC_SEGMENT |
| 1971 | || mdata->commands[i].type == BFD_MACH_O_LC_SEGMENT_64) |
| 1972 | { |
| 1973 | bfd_mach_o_segment_command *seg; |
| 1974 | |
| 1975 | seg = &mdata->commands[i].command.segment; |
| 1976 | mdata->nsects += seg->nsects; |
| 1977 | } |
| 1978 | } |
| 1979 | |
| 1980 | /* Allocate sections array. */ |
| 1981 | mdata->sections = bfd_alloc (abfd, |
| 1982 | mdata->nsects * sizeof (bfd_mach_o_section *)); |
| 1983 | |
| 1984 | /* Fill the array. */ |
| 1985 | csect = 0; |
| 1986 | |
| 1987 | for (i = 0; i < mdata->header.ncmds; i++) |
| 1988 | { |
| 1989 | if (mdata->commands[i].type == BFD_MACH_O_LC_SEGMENT |
| 1990 | || mdata->commands[i].type == BFD_MACH_O_LC_SEGMENT_64) |
| 1991 | { |
| 1992 | bfd_mach_o_segment_command *seg; |
| 1993 | |
| 1994 | seg = &mdata->commands[i].command.segment; |
| 1995 | BFD_ASSERT (csect + seg->nsects <= mdata->nsects); |
| 1996 | |
| 1997 | for (j = 0; j < seg->nsects; j++) |
| 1998 | mdata->sections[csect++] = &seg->sections[j]; |
| 1999 | } |
| 2000 | } |
| 2001 | } |
| 2002 | |
| 2003 | int |
| 2004 | bfd_mach_o_scan_start_address (bfd *abfd) |
| 2005 | { |
| 2006 | bfd_mach_o_data_struct *mdata = abfd->tdata.mach_o_data; |
| 2007 | bfd_mach_o_thread_command *cmd = NULL; |
| 2008 | unsigned long i; |
| 2009 | |
| 2010 | for (i = 0; i < mdata->header.ncmds; i++) |
| 2011 | { |
| 2012 | if ((mdata->commands[i].type == BFD_MACH_O_LC_THREAD) || |
| 2013 | (mdata->commands[i].type == BFD_MACH_O_LC_UNIXTHREAD)) |
| 2014 | { |
| 2015 | if (cmd == NULL) |
| 2016 | cmd = &mdata->commands[i].command.thread; |
| 2017 | else |
| 2018 | return 0; |
| 2019 | } |
| 2020 | } |
| 2021 | |
| 2022 | if (cmd == NULL) |
| 2023 | return 0; |
| 2024 | |
| 2025 | for (i = 0; i < cmd->nflavours; i++) |
| 2026 | { |
| 2027 | if ((mdata->header.cputype == BFD_MACH_O_CPU_TYPE_I386) |
| 2028 | && (cmd->flavours[i].flavour |
| 2029 | == (unsigned long) BFD_MACH_O_x86_THREAD_STATE32)) |
| 2030 | { |
| 2031 | unsigned char buf[4]; |
| 2032 | |
| 2033 | if (bfd_seek (abfd, cmd->flavours[i].offset + 40, SEEK_SET) != 0 |
| 2034 | || bfd_bread (buf, 4, abfd) != 4) |
| 2035 | return -1; |
| 2036 | |
| 2037 | abfd->start_address = bfd_h_get_32 (abfd, buf); |
| 2038 | } |
| 2039 | else if ((mdata->header.cputype == BFD_MACH_O_CPU_TYPE_POWERPC) |
| 2040 | && (cmd->flavours[i].flavour == BFD_MACH_O_PPC_THREAD_STATE)) |
| 2041 | { |
| 2042 | unsigned char buf[4]; |
| 2043 | |
| 2044 | if (bfd_seek (abfd, cmd->flavours[i].offset + 0, SEEK_SET) != 0 |
| 2045 | || bfd_bread (buf, 4, abfd) != 4) |
| 2046 | return -1; |
| 2047 | |
| 2048 | abfd->start_address = bfd_h_get_32 (abfd, buf); |
| 2049 | } |
| 2050 | else if ((mdata->header.cputype == BFD_MACH_O_CPU_TYPE_POWERPC_64) |
| 2051 | && (cmd->flavours[i].flavour == BFD_MACH_O_PPC_THREAD_STATE_64)) |
| 2052 | { |
| 2053 | unsigned char buf[8]; |
| 2054 | |
| 2055 | if (bfd_seek (abfd, cmd->flavours[i].offset + 0, SEEK_SET) != 0 |
| 2056 | || bfd_bread (buf, 8, abfd) != 8) |
| 2057 | return -1; |
| 2058 | |
| 2059 | abfd->start_address = bfd_h_get_64 (abfd, buf); |
| 2060 | } |
| 2061 | else if ((mdata->header.cputype == BFD_MACH_O_CPU_TYPE_X86_64) |
| 2062 | && (cmd->flavours[i].flavour == BFD_MACH_O_x86_THREAD_STATE64)) |
| 2063 | { |
| 2064 | unsigned char buf[8]; |
| 2065 | |
| 2066 | if (bfd_seek (abfd, cmd->flavours[i].offset + (16 * 8), SEEK_SET) != 0 |
| 2067 | || bfd_bread (buf, 8, abfd) != 8) |
| 2068 | return -1; |
| 2069 | |
| 2070 | abfd->start_address = bfd_h_get_64 (abfd, buf); |
| 2071 | } |
| 2072 | } |
| 2073 | |
| 2074 | return 0; |
| 2075 | } |
| 2076 | |
| 2077 | int |
| 2078 | bfd_mach_o_scan (bfd *abfd, |
| 2079 | bfd_mach_o_header *header, |
| 2080 | bfd_mach_o_data_struct *mdata) |
| 2081 | { |
| 2082 | unsigned int i; |
| 2083 | enum bfd_architecture cputype; |
| 2084 | unsigned long cpusubtype; |
| 2085 | unsigned int hdrsize; |
| 2086 | |
| 2087 | hdrsize = mach_o_wide_p (header) ? |
| 2088 | BFD_MACH_O_HEADER_64_SIZE : BFD_MACH_O_HEADER_SIZE; |
| 2089 | |
| 2090 | mdata->header = *header; |
| 2091 | mdata->symbols = NULL; |
| 2092 | |
| 2093 | abfd->flags = abfd->flags & BFD_IN_MEMORY; |
| 2094 | switch (header->filetype) |
| 2095 | { |
| 2096 | case BFD_MACH_O_MH_OBJECT: |
| 2097 | abfd->flags |= HAS_RELOC; |
| 2098 | break; |
| 2099 | case BFD_MACH_O_MH_EXECUTE: |
| 2100 | abfd->flags |= EXEC_P; |
| 2101 | break; |
| 2102 | case BFD_MACH_O_MH_DYLIB: |
| 2103 | case BFD_MACH_O_MH_BUNDLE: |
| 2104 | abfd->flags |= DYNAMIC; |
| 2105 | break; |
| 2106 | } |
| 2107 | |
| 2108 | abfd->tdata.mach_o_data = mdata; |
| 2109 | |
| 2110 | bfd_mach_o_convert_architecture (header->cputype, header->cpusubtype, |
| 2111 | &cputype, &cpusubtype); |
| 2112 | if (cputype == bfd_arch_unknown) |
| 2113 | { |
| 2114 | fprintf (stderr, "bfd_mach_o_scan: unknown architecture 0x%lx/0x%lx\n", |
| 2115 | header->cputype, header->cpusubtype); |
| 2116 | return -1; |
| 2117 | } |
| 2118 | |
| 2119 | bfd_set_arch_mach (abfd, cputype, cpusubtype); |
| 2120 | |
| 2121 | if (header->ncmds != 0) |
| 2122 | { |
| 2123 | mdata->commands = bfd_alloc (abfd, header->ncmds * sizeof (bfd_mach_o_load_command)); |
| 2124 | if (mdata->commands == NULL) |
| 2125 | return -1; |
| 2126 | |
| 2127 | for (i = 0; i < header->ncmds; i++) |
| 2128 | { |
| 2129 | bfd_mach_o_load_command *cur = &mdata->commands[i]; |
| 2130 | |
| 2131 | if (i == 0) |
| 2132 | cur->offset = hdrsize; |
| 2133 | else |
| 2134 | { |
| 2135 | bfd_mach_o_load_command *prev = &mdata->commands[i - 1]; |
| 2136 | cur->offset = prev->offset + prev->len; |
| 2137 | } |
| 2138 | |
| 2139 | if (bfd_mach_o_scan_read_command (abfd, cur) < 0) |
| 2140 | return -1; |
| 2141 | } |
| 2142 | } |
| 2143 | |
| 2144 | if (bfd_mach_o_scan_start_address (abfd) < 0) |
| 2145 | return -1; |
| 2146 | |
| 2147 | bfd_mach_o_flatten_sections (abfd); |
| 2148 | return 0; |
| 2149 | } |
| 2150 | |
| 2151 | bfd_boolean |
| 2152 | bfd_mach_o_mkobject_init (bfd *abfd) |
| 2153 | { |
| 2154 | bfd_mach_o_data_struct *mdata = NULL; |
| 2155 | |
| 2156 | mdata = bfd_alloc (abfd, sizeof (bfd_mach_o_data_struct)); |
| 2157 | if (mdata == NULL) |
| 2158 | return FALSE; |
| 2159 | abfd->tdata.mach_o_data = mdata; |
| 2160 | |
| 2161 | mdata->header.magic = 0; |
| 2162 | mdata->header.cputype = 0; |
| 2163 | mdata->header.cpusubtype = 0; |
| 2164 | mdata->header.filetype = 0; |
| 2165 | mdata->header.ncmds = 0; |
| 2166 | mdata->header.sizeofcmds = 0; |
| 2167 | mdata->header.flags = 0; |
| 2168 | mdata->header.byteorder = BFD_ENDIAN_UNKNOWN; |
| 2169 | mdata->commands = NULL; |
| 2170 | mdata->nsymbols = 0; |
| 2171 | mdata->symbols = NULL; |
| 2172 | mdata->nsects = 0; |
| 2173 | mdata->sections = NULL; |
| 2174 | mdata->ibfd = NULL; |
| 2175 | |
| 2176 | return TRUE; |
| 2177 | } |
| 2178 | |
| 2179 | const bfd_target * |
| 2180 | bfd_mach_o_header_p (bfd *abfd, |
| 2181 | bfd_mach_o_filetype filetype, |
| 2182 | bfd_mach_o_cpu_type cputype) |
| 2183 | { |
| 2184 | struct bfd_preserve preserve; |
| 2185 | bfd_mach_o_header header; |
| 2186 | |
| 2187 | preserve.marker = NULL; |
| 2188 | if (!bfd_mach_o_read_header (abfd, &header)) |
| 2189 | goto wrong; |
| 2190 | |
| 2191 | if (! (header.byteorder == BFD_ENDIAN_BIG |
| 2192 | || header.byteorder == BFD_ENDIAN_LITTLE)) |
| 2193 | { |
| 2194 | fprintf (stderr, "unknown header byte-order value 0x%lx\n", |
| 2195 | (unsigned long) header.byteorder); |
| 2196 | goto wrong; |
| 2197 | } |
| 2198 | |
| 2199 | if (! ((header.byteorder == BFD_ENDIAN_BIG |
| 2200 | && abfd->xvec->byteorder == BFD_ENDIAN_BIG |
| 2201 | && abfd->xvec->header_byteorder == BFD_ENDIAN_BIG) |
| 2202 | || (header.byteorder == BFD_ENDIAN_LITTLE |
| 2203 | && abfd->xvec->byteorder == BFD_ENDIAN_LITTLE |
| 2204 | && abfd->xvec->header_byteorder == BFD_ENDIAN_LITTLE))) |
| 2205 | goto wrong; |
| 2206 | |
| 2207 | /* Check cputype and filetype. |
| 2208 | In case of wildcard, do not accept magics that are handled by existing |
| 2209 | targets. */ |
| 2210 | if (cputype) |
| 2211 | { |
| 2212 | if (header.cputype != cputype) |
| 2213 | goto wrong; |
| 2214 | } |
| 2215 | else |
| 2216 | { |
| 2217 | switch (header.cputype) |
| 2218 | { |
| 2219 | case BFD_MACH_O_CPU_TYPE_I386: |
| 2220 | /* Handled by mach-o-i386 */ |
| 2221 | goto wrong; |
| 2222 | default: |
| 2223 | break; |
| 2224 | } |
| 2225 | } |
| 2226 | if (filetype) |
| 2227 | { |
| 2228 | if (header.filetype != filetype) |
| 2229 | goto wrong; |
| 2230 | } |
| 2231 | else |
| 2232 | { |
| 2233 | switch (header.filetype) |
| 2234 | { |
| 2235 | case BFD_MACH_O_MH_CORE: |
| 2236 | /* Handled by core_p */ |
| 2237 | goto wrong; |
| 2238 | default: |
| 2239 | break; |
| 2240 | } |
| 2241 | } |
| 2242 | |
| 2243 | preserve.marker = bfd_zalloc (abfd, sizeof (bfd_mach_o_data_struct)); |
| 2244 | if (preserve.marker == NULL |
| 2245 | || !bfd_preserve_save (abfd, &preserve)) |
| 2246 | goto fail; |
| 2247 | |
| 2248 | if (bfd_mach_o_scan (abfd, &header, |
| 2249 | (bfd_mach_o_data_struct *) preserve.marker) != 0) |
| 2250 | goto wrong; |
| 2251 | |
| 2252 | bfd_preserve_finish (abfd, &preserve); |
| 2253 | return abfd->xvec; |
| 2254 | |
| 2255 | wrong: |
| 2256 | bfd_set_error (bfd_error_wrong_format); |
| 2257 | |
| 2258 | fail: |
| 2259 | if (preserve.marker != NULL) |
| 2260 | bfd_preserve_restore (abfd, &preserve); |
| 2261 | return NULL; |
| 2262 | } |
| 2263 | |
| 2264 | static const bfd_target * |
| 2265 | bfd_mach_o_gen_object_p (bfd *abfd) |
| 2266 | { |
| 2267 | return bfd_mach_o_header_p (abfd, 0, 0); |
| 2268 | } |
| 2269 | |
| 2270 | static const bfd_target * |
| 2271 | bfd_mach_o_gen_core_p (bfd *abfd) |
| 2272 | { |
| 2273 | return bfd_mach_o_header_p (abfd, BFD_MACH_O_MH_CORE, 0); |
| 2274 | } |
| 2275 | |
| 2276 | typedef struct mach_o_fat_archentry |
| 2277 | { |
| 2278 | unsigned long cputype; |
| 2279 | unsigned long cpusubtype; |
| 2280 | unsigned long offset; |
| 2281 | unsigned long size; |
| 2282 | unsigned long align; |
| 2283 | } mach_o_fat_archentry; |
| 2284 | |
| 2285 | typedef struct mach_o_fat_data_struct |
| 2286 | { |
| 2287 | unsigned long magic; |
| 2288 | unsigned long nfat_arch; |
| 2289 | mach_o_fat_archentry *archentries; |
| 2290 | } mach_o_fat_data_struct; |
| 2291 | |
| 2292 | const bfd_target * |
| 2293 | bfd_mach_o_archive_p (bfd *abfd) |
| 2294 | { |
| 2295 | mach_o_fat_data_struct *adata = NULL; |
| 2296 | unsigned char buf[20]; |
| 2297 | unsigned long i; |
| 2298 | |
| 2299 | if (bfd_seek (abfd, 0, SEEK_SET) != 0 |
| 2300 | || bfd_bread ((PTR) buf, 8, abfd) != 8) |
| 2301 | goto error; |
| 2302 | |
| 2303 | adata = bfd_alloc (abfd, sizeof (mach_o_fat_data_struct)); |
| 2304 | if (adata == NULL) |
| 2305 | goto error; |
| 2306 | |
| 2307 | adata->magic = bfd_getb32 (buf); |
| 2308 | adata->nfat_arch = bfd_getb32 (buf + 4); |
| 2309 | if (adata->magic != 0xcafebabe) |
| 2310 | goto error; |
| 2311 | /* Avoid matching Java bytecode files, which have the same magic number. |
| 2312 | In the Java bytecode file format this field contains the JVM version, |
| 2313 | which starts at 43.0. */ |
| 2314 | if (adata->nfat_arch > 30) |
| 2315 | goto error; |
| 2316 | |
| 2317 | adata->archentries = |
| 2318 | bfd_alloc (abfd, adata->nfat_arch * sizeof (mach_o_fat_archentry)); |
| 2319 | if (adata->archentries == NULL) |
| 2320 | goto error; |
| 2321 | |
| 2322 | for (i = 0; i < adata->nfat_arch; i++) |
| 2323 | { |
| 2324 | if (bfd_seek (abfd, 8 + 20 * i, SEEK_SET) != 0 |
| 2325 | || bfd_bread ((PTR) buf, 20, abfd) != 20) |
| 2326 | goto error; |
| 2327 | adata->archentries[i].cputype = bfd_getb32 (buf); |
| 2328 | adata->archentries[i].cpusubtype = bfd_getb32 (buf + 4); |
| 2329 | adata->archentries[i].offset = bfd_getb32 (buf + 8); |
| 2330 | adata->archentries[i].size = bfd_getb32 (buf + 12); |
| 2331 | adata->archentries[i].align = bfd_getb32 (buf + 16); |
| 2332 | } |
| 2333 | |
| 2334 | abfd->tdata.mach_o_fat_data = adata; |
| 2335 | return abfd->xvec; |
| 2336 | |
| 2337 | error: |
| 2338 | if (adata != NULL) |
| 2339 | bfd_release (abfd, adata); |
| 2340 | bfd_set_error (bfd_error_wrong_format); |
| 2341 | return NULL; |
| 2342 | } |
| 2343 | |
| 2344 | bfd * |
| 2345 | bfd_mach_o_openr_next_archived_file (bfd *archive, bfd *prev) |
| 2346 | { |
| 2347 | mach_o_fat_data_struct *adata; |
| 2348 | mach_o_fat_archentry *entry = NULL; |
| 2349 | unsigned long i; |
| 2350 | bfd *nbfd; |
| 2351 | enum bfd_architecture arch_type; |
| 2352 | unsigned long arch_subtype; |
| 2353 | |
| 2354 | adata = (mach_o_fat_data_struct *) archive->tdata.mach_o_fat_data; |
| 2355 | BFD_ASSERT (adata != NULL); |
| 2356 | |
| 2357 | /* Find index of previous entry. */ |
| 2358 | if (prev == NULL) |
| 2359 | i = 0; /* Start at first one. */ |
| 2360 | else |
| 2361 | { |
| 2362 | for (i = 0; i < adata->nfat_arch; i++) |
| 2363 | { |
| 2364 | if (adata->archentries[i].offset == prev->origin) |
| 2365 | break; |
| 2366 | } |
| 2367 | |
| 2368 | if (i == adata->nfat_arch) |
| 2369 | { |
| 2370 | /* Not found. */ |
| 2371 | bfd_set_error (bfd_error_bad_value); |
| 2372 | return NULL; |
| 2373 | } |
| 2374 | i++; /* Get next entry. */ |
| 2375 | } |
| 2376 | |
| 2377 | if (i >= adata->nfat_arch) |
| 2378 | { |
| 2379 | bfd_set_error (bfd_error_no_more_archived_files); |
| 2380 | return NULL; |
| 2381 | } |
| 2382 | |
| 2383 | entry = &adata->archentries[i]; |
| 2384 | nbfd = _bfd_new_bfd_contained_in (archive); |
| 2385 | if (nbfd == NULL) |
| 2386 | return NULL; |
| 2387 | |
| 2388 | nbfd->origin = entry->offset; |
| 2389 | |
| 2390 | bfd_mach_o_convert_architecture (entry->cputype, entry->cpusubtype, |
| 2391 | &arch_type, &arch_subtype); |
| 2392 | /* Create the member filename. |
| 2393 | Use FILENAME:ARCH_NAME. */ |
| 2394 | { |
| 2395 | char *s = NULL; |
| 2396 | const char *arch_name; |
| 2397 | size_t arch_file_len = strlen (bfd_get_filename (archive)); |
| 2398 | |
| 2399 | arch_name = bfd_printable_arch_mach (arch_type, arch_subtype); |
| 2400 | s = bfd_malloc (arch_file_len + 1 + strlen (arch_name) + 1); |
| 2401 | if (s == NULL) |
| 2402 | return NULL; |
| 2403 | memcpy (s, bfd_get_filename (archive), arch_file_len); |
| 2404 | s[arch_file_len] = ':'; |
| 2405 | strcpy (s + arch_file_len + 1, arch_name); |
| 2406 | nbfd->filename = s; |
| 2407 | } |
| 2408 | nbfd->iostream = NULL; |
| 2409 | bfd_set_arch_mach (nbfd, arch_type, arch_subtype); |
| 2410 | |
| 2411 | return nbfd; |
| 2412 | } |
| 2413 | |
| 2414 | /* If ABFD format is FORMAT and architecture is ARCH, return it. |
| 2415 | If ABFD is a fat image containing a member that corresponds to FORMAT |
| 2416 | and ARCH, returns it. |
| 2417 | In other case, returns NULL. |
| 2418 | This function allows transparent uses of fat images. */ |
| 2419 | bfd * |
| 2420 | bfd_mach_o_fat_extract (bfd *abfd, |
| 2421 | bfd_format format, |
| 2422 | const bfd_arch_info_type *arch) |
| 2423 | { |
| 2424 | bfd *res; |
| 2425 | mach_o_fat_data_struct *adata; |
| 2426 | unsigned int i; |
| 2427 | |
| 2428 | if (bfd_check_format (abfd, format)) |
| 2429 | { |
| 2430 | if (bfd_get_arch_info (abfd) == arch) |
| 2431 | return abfd; |
| 2432 | return NULL; |
| 2433 | } |
| 2434 | if (!bfd_check_format (abfd, bfd_archive) |
| 2435 | || abfd->xvec != &mach_o_fat_vec) |
| 2436 | return NULL; |
| 2437 | |
| 2438 | /* This is a Mach-O fat image. */ |
| 2439 | adata = (mach_o_fat_data_struct *) abfd->tdata.mach_o_fat_data; |
| 2440 | BFD_ASSERT (adata != NULL); |
| 2441 | |
| 2442 | for (i = 0; i < adata->nfat_arch; i++) |
| 2443 | { |
| 2444 | struct mach_o_fat_archentry *e = &adata->archentries[i]; |
| 2445 | enum bfd_architecture cpu_type; |
| 2446 | unsigned long cpu_subtype; |
| 2447 | |
| 2448 | bfd_mach_o_convert_architecture (e->cputype, e->cpusubtype, |
| 2449 | &cpu_type, &cpu_subtype); |
| 2450 | if (cpu_type != arch->arch || cpu_subtype != arch->mach) |
| 2451 | continue; |
| 2452 | |
| 2453 | /* The architecture is found. */ |
| 2454 | res = _bfd_new_bfd_contained_in (abfd); |
| 2455 | if (res == NULL) |
| 2456 | return NULL; |
| 2457 | |
| 2458 | res->origin = e->offset; |
| 2459 | |
| 2460 | res->filename = strdup (abfd->filename); |
| 2461 | res->iostream = NULL; |
| 2462 | |
| 2463 | if (bfd_check_format (res, format)) |
| 2464 | { |
| 2465 | BFD_ASSERT (bfd_get_arch_info (res) == arch); |
| 2466 | return res; |
| 2467 | } |
| 2468 | bfd_close (res); |
| 2469 | return NULL; |
| 2470 | } |
| 2471 | |
| 2472 | return NULL; |
| 2473 | } |
| 2474 | |
| 2475 | int |
| 2476 | bfd_mach_o_lookup_section (bfd *abfd, |
| 2477 | asection *section, |
| 2478 | bfd_mach_o_load_command **mcommand, |
| 2479 | bfd_mach_o_section **msection) |
| 2480 | { |
| 2481 | struct mach_o_data_struct *md = abfd->tdata.mach_o_data; |
| 2482 | unsigned int i, j, num; |
| 2483 | |
| 2484 | bfd_mach_o_load_command *ncmd = NULL; |
| 2485 | bfd_mach_o_section *nsect = NULL; |
| 2486 | |
| 2487 | BFD_ASSERT (mcommand != NULL); |
| 2488 | BFD_ASSERT (msection != NULL); |
| 2489 | |
| 2490 | num = 0; |
| 2491 | for (i = 0; i < md->header.ncmds; i++) |
| 2492 | { |
| 2493 | struct bfd_mach_o_load_command *cmd = &md->commands[i]; |
| 2494 | struct bfd_mach_o_segment_command *seg = NULL; |
| 2495 | |
| 2496 | if (cmd->type != BFD_MACH_O_LC_SEGMENT |
| 2497 | || cmd->type != BFD_MACH_O_LC_SEGMENT_64) |
| 2498 | continue; |
| 2499 | seg = &cmd->command.segment; |
| 2500 | |
| 2501 | if (seg->segment == section) |
| 2502 | { |
| 2503 | if (num == 0) |
| 2504 | ncmd = cmd; |
| 2505 | num++; |
| 2506 | } |
| 2507 | |
| 2508 | for (j = 0; j < seg->nsects; j++) |
| 2509 | { |
| 2510 | struct bfd_mach_o_section *sect = &seg->sections[j]; |
| 2511 | |
| 2512 | if (sect->bfdsection == section) |
| 2513 | { |
| 2514 | if (num == 0) |
| 2515 | nsect = sect; |
| 2516 | num++; |
| 2517 | } |
| 2518 | } |
| 2519 | } |
| 2520 | |
| 2521 | *mcommand = ncmd; |
| 2522 | *msection = nsect; |
| 2523 | return num; |
| 2524 | } |
| 2525 | |
| 2526 | int |
| 2527 | bfd_mach_o_lookup_command (bfd *abfd, |
| 2528 | bfd_mach_o_load_command_type type, |
| 2529 | bfd_mach_o_load_command **mcommand) |
| 2530 | { |
| 2531 | struct mach_o_data_struct *md = NULL; |
| 2532 | bfd_mach_o_load_command *ncmd = NULL; |
| 2533 | unsigned int i, num; |
| 2534 | |
| 2535 | md = abfd->tdata.mach_o_data; |
| 2536 | |
| 2537 | BFD_ASSERT (md != NULL); |
| 2538 | BFD_ASSERT (mcommand != NULL); |
| 2539 | |
| 2540 | num = 0; |
| 2541 | for (i = 0; i < md->header.ncmds; i++) |
| 2542 | { |
| 2543 | struct bfd_mach_o_load_command *cmd = &md->commands[i]; |
| 2544 | |
| 2545 | if (cmd->type != type) |
| 2546 | continue; |
| 2547 | |
| 2548 | if (num == 0) |
| 2549 | ncmd = cmd; |
| 2550 | num++; |
| 2551 | } |
| 2552 | |
| 2553 | *mcommand = ncmd; |
| 2554 | return num; |
| 2555 | } |
| 2556 | |
| 2557 | unsigned long |
| 2558 | bfd_mach_o_stack_addr (enum bfd_mach_o_cpu_type type) |
| 2559 | { |
| 2560 | switch (type) |
| 2561 | { |
| 2562 | case BFD_MACH_O_CPU_TYPE_MC680x0: |
| 2563 | return 0x04000000; |
| 2564 | case BFD_MACH_O_CPU_TYPE_MC88000: |
| 2565 | return 0xffffe000; |
| 2566 | case BFD_MACH_O_CPU_TYPE_POWERPC: |
| 2567 | return 0xc0000000; |
| 2568 | case BFD_MACH_O_CPU_TYPE_I386: |
| 2569 | return 0xc0000000; |
| 2570 | case BFD_MACH_O_CPU_TYPE_SPARC: |
| 2571 | return 0xf0000000; |
| 2572 | case BFD_MACH_O_CPU_TYPE_I860: |
| 2573 | return 0; |
| 2574 | case BFD_MACH_O_CPU_TYPE_HPPA: |
| 2575 | return 0xc0000000 - 0x04000000; |
| 2576 | default: |
| 2577 | return 0; |
| 2578 | } |
| 2579 | } |
| 2580 | |
| 2581 | bfd_boolean |
| 2582 | bfd_mach_o_bfd_print_private_bfd_data (bfd *abfd, PTR ptr) |
| 2583 | { |
| 2584 | bfd_mach_o_data_struct *mdata = abfd->tdata.mach_o_data; |
| 2585 | FILE *file = (FILE *) ptr; |
| 2586 | unsigned int i, j; |
| 2587 | unsigned int sec_nbr = 0; |
| 2588 | |
| 2589 | fprintf (file, _("Segments and Sections:\n")); |
| 2590 | fprintf (file, _(" #: Segment name Section name Address\n")); |
| 2591 | |
| 2592 | for (i = 0; i < mdata->header.ncmds; i++) |
| 2593 | { |
| 2594 | bfd_mach_o_segment_command *seg; |
| 2595 | |
| 2596 | if (mdata->commands[i].type != BFD_MACH_O_LC_SEGMENT |
| 2597 | && mdata->commands[i].type != BFD_MACH_O_LC_SEGMENT_64) |
| 2598 | continue; |
| 2599 | |
| 2600 | seg = &mdata->commands[i].command.segment; |
| 2601 | |
| 2602 | fprintf (file, "[Segment %-16s ", seg->segname); |
| 2603 | fprintf_vma (file, seg->vmaddr); |
| 2604 | fprintf (file, "-"); |
| 2605 | fprintf_vma (file, seg->vmaddr + seg->vmsize - 1); |
| 2606 | fputc (' ', file); |
| 2607 | fputc (seg->initprot & BFD_MACH_O_PROT_READ ? 'r' : '-', file); |
| 2608 | fputc (seg->initprot & BFD_MACH_O_PROT_WRITE ? 'w' : '-', file); |
| 2609 | fputc (seg->initprot & BFD_MACH_O_PROT_EXECUTE ? 'x' : '-', file); |
| 2610 | fprintf (file, "]\n"); |
| 2611 | for (j = 0; j < seg->nsects; j++) |
| 2612 | { |
| 2613 | bfd_mach_o_section *sec = &seg->sections[j]; |
| 2614 | fprintf (file, "%02u: %-16s %-16s ", ++sec_nbr, |
| 2615 | sec->segname, sec->sectname); |
| 2616 | fprintf_vma (file, sec->addr); |
| 2617 | fprintf (file, " "); |
| 2618 | fprintf_vma (file, sec->size); |
| 2619 | fprintf (file, " %08lx\n", sec->flags); |
| 2620 | } |
| 2621 | } |
| 2622 | |
| 2623 | for (i = 0; i < mdata->header.ncmds; i++) |
| 2624 | { |
| 2625 | bfd_mach_o_load_command *cmd = &mdata->commands[i]; |
| 2626 | |
| 2627 | switch (cmd->type) |
| 2628 | { |
| 2629 | case BFD_MACH_O_LC_SEGMENT: |
| 2630 | case BFD_MACH_O_LC_SEGMENT_64: |
| 2631 | break; |
| 2632 | case BFD_MACH_O_LC_UUID: |
| 2633 | { |
| 2634 | bfd_mach_o_uuid_command *uuid = &cmd->command.uuid; |
| 2635 | unsigned int i; |
| 2636 | |
| 2637 | fprintf (file, "\n" |
| 2638 | "UUID:"); |
| 2639 | for (i = 0; i < sizeof (uuid->uuid); i++) |
| 2640 | fprintf (file, " %02x", uuid->uuid[i]); |
| 2641 | fputc ('\n', file); |
| 2642 | } |
| 2643 | break; |
| 2644 | case BFD_MACH_O_LC_LOAD_DYLIB: |
| 2645 | { |
| 2646 | bfd_mach_o_dylib_command *dylib = &cmd->command.dylib; |
| 2647 | bfd_byte *data = NULL; |
| 2648 | |
| 2649 | if (! bfd_malloc_and_get_section (abfd, dylib->section, &data)) |
| 2650 | { |
| 2651 | if (data != NULL) |
| 2652 | free (data); |
| 2653 | break; |
| 2654 | } |
| 2655 | fprintf (file, "\n" |
| 2656 | "LOAD_DYLIB: %s\n", |
| 2657 | data + dylib->name_offset - cmd->offset - 8); |
| 2658 | fprintf (file, " time stamp: 0x%08lx\n", |
| 2659 | dylib->timestamp); |
| 2660 | fprintf (file, " current version: 0x%08lx\n", |
| 2661 | dylib->current_version); |
| 2662 | fprintf (file, " comptibility version: 0x%08lx\n", |
| 2663 | dylib->compatibility_version); |
| 2664 | free (data); |
| 2665 | break; |
| 2666 | } |
| 2667 | case BFD_MACH_O_LC_LOAD_DYLINKER: |
| 2668 | { |
| 2669 | bfd_mach_o_dylinker_command *linker = &cmd->command.dylinker; |
| 2670 | bfd_byte *data = NULL; |
| 2671 | |
| 2672 | if (! bfd_malloc_and_get_section (abfd, linker->section, &data)) |
| 2673 | { |
| 2674 | if (data != NULL) |
| 2675 | free (data); |
| 2676 | break; |
| 2677 | } |
| 2678 | fprintf (file, "\n" |
| 2679 | "LOAD_DYLINKER: %s\n", |
| 2680 | data + linker->name_offset - cmd->offset - 8); |
| 2681 | free (data); |
| 2682 | break; |
| 2683 | } |
| 2684 | case BFD_MACH_O_LC_SYMTAB: |
| 2685 | { |
| 2686 | bfd_mach_o_symtab_command *symtab = &cmd->command.symtab; |
| 2687 | fprintf (file, "\n" |
| 2688 | "LC_SYMTAB: nsyms: %lu, strsize: %lu\n", |
| 2689 | symtab->nsyms, symtab->strsize); |
| 2690 | break; |
| 2691 | } |
| 2692 | case BFD_MACH_O_LC_DYSYMTAB: |
| 2693 | { |
| 2694 | bfd_mach_o_dysymtab_command *dysymtab = &cmd->command.dysymtab; |
| 2695 | fprintf (file, "\n" |
| 2696 | "LC_DYSYMTAB:\n" |
| 2697 | " local symbols: index: %lu number: %lu\n", |
| 2698 | dysymtab->ilocalsym, dysymtab->nlocalsym); |
| 2699 | fprintf (file, |
| 2700 | " external symbols: index: %lu number: %lu\n", |
| 2701 | dysymtab->iextdefsym, dysymtab->nextdefsym); |
| 2702 | fprintf (file, |
| 2703 | " undefined symbols: index: %lu number: %lu\n", |
| 2704 | dysymtab->iundefsym, dysymtab->nundefsym); |
| 2705 | fprintf (file, |
| 2706 | " ntoc: offset: %lu number: %lu\n", |
| 2707 | dysymtab->tocoff, dysymtab->ntoc); |
| 2708 | fprintf (file, |
| 2709 | " module table: offset: %lu number: %lu\n", |
| 2710 | dysymtab->modtaboff, dysymtab->nmodtab); |
| 2711 | break; |
| 2712 | } |
| 2713 | default: |
| 2714 | fprintf (file, "LC_%d\n", cmd->type); |
| 2715 | break; |
| 2716 | } |
| 2717 | } |
| 2718 | |
| 2719 | return TRUE; |
| 2720 | } |
| 2721 | |
| 2722 | int |
| 2723 | bfd_mach_o_core_fetch_environment (bfd *abfd, |
| 2724 | unsigned char **rbuf, |
| 2725 | unsigned int *rlen) |
| 2726 | { |
| 2727 | bfd_mach_o_data_struct *mdata = abfd->tdata.mach_o_data; |
| 2728 | unsigned long stackaddr = bfd_mach_o_stack_addr (mdata->header.cputype); |
| 2729 | unsigned int i = 0; |
| 2730 | |
| 2731 | for (i = 0; i < mdata->header.ncmds; i++) |
| 2732 | { |
| 2733 | bfd_mach_o_load_command *cur = &mdata->commands[i]; |
| 2734 | bfd_mach_o_segment_command *seg = NULL; |
| 2735 | |
| 2736 | if (cur->type != BFD_MACH_O_LC_SEGMENT) |
| 2737 | continue; |
| 2738 | |
| 2739 | seg = &cur->command.segment; |
| 2740 | |
| 2741 | if ((seg->vmaddr + seg->vmsize) == stackaddr) |
| 2742 | { |
| 2743 | unsigned long start = seg->fileoff; |
| 2744 | unsigned long end = seg->fileoff + seg->filesize; |
| 2745 | unsigned char *buf = bfd_malloc (1024); |
| 2746 | unsigned long size = 1024; |
| 2747 | |
| 2748 | for (;;) |
| 2749 | { |
| 2750 | bfd_size_type nread = 0; |
| 2751 | unsigned long offset; |
| 2752 | int found_nonnull = 0; |
| 2753 | |
| 2754 | if (size > (end - start)) |
| 2755 | size = (end - start); |
| 2756 | |
| 2757 | buf = bfd_realloc_or_free (buf, size); |
| 2758 | if (buf == NULL) |
| 2759 | return -1; |
| 2760 | |
| 2761 | if (bfd_seek (abfd, end - size, SEEK_SET) != 0) |
| 2762 | { |
| 2763 | free (buf); |
| 2764 | return -1; |
| 2765 | } |
| 2766 | |
| 2767 | nread = bfd_bread (buf, size, abfd); |
| 2768 | |
| 2769 | if (nread != size) |
| 2770 | { |
| 2771 | free (buf); |
| 2772 | return -1; |
| 2773 | } |
| 2774 | |
| 2775 | for (offset = 4; offset <= size; offset += 4) |
| 2776 | { |
| 2777 | unsigned long val; |
| 2778 | |
| 2779 | val = *((unsigned long *) (buf + size - offset)); |
| 2780 | if (! found_nonnull) |
| 2781 | { |
| 2782 | if (val != 0) |
| 2783 | found_nonnull = 1; |
| 2784 | } |
| 2785 | else if (val == 0x0) |
| 2786 | { |
| 2787 | unsigned long bottom; |
| 2788 | unsigned long top; |
| 2789 | |
| 2790 | bottom = seg->fileoff + seg->filesize - offset; |
| 2791 | top = seg->fileoff + seg->filesize - 4; |
| 2792 | *rbuf = bfd_malloc (top - bottom); |
| 2793 | *rlen = top - bottom; |
| 2794 | |
| 2795 | memcpy (*rbuf, buf + size - *rlen, *rlen); |
| 2796 | free (buf); |
| 2797 | return 0; |
| 2798 | } |
| 2799 | } |
| 2800 | |
| 2801 | if (size == (end - start)) |
| 2802 | break; |
| 2803 | |
| 2804 | size *= 2; |
| 2805 | } |
| 2806 | |
| 2807 | free (buf); |
| 2808 | } |
| 2809 | } |
| 2810 | |
| 2811 | return -1; |
| 2812 | } |
| 2813 | |
| 2814 | char * |
| 2815 | bfd_mach_o_core_file_failing_command (bfd *abfd) |
| 2816 | { |
| 2817 | unsigned char *buf = NULL; |
| 2818 | unsigned int len = 0; |
| 2819 | int ret = -1; |
| 2820 | |
| 2821 | ret = bfd_mach_o_core_fetch_environment (abfd, &buf, &len); |
| 2822 | if (ret < 0) |
| 2823 | return NULL; |
| 2824 | |
| 2825 | return (char *) buf; |
| 2826 | } |
| 2827 | |
| 2828 | int |
| 2829 | bfd_mach_o_core_file_failing_signal (bfd *abfd ATTRIBUTE_UNUSED) |
| 2830 | { |
| 2831 | return 0; |
| 2832 | } |
| 2833 | |
| 2834 | #define TARGET_NAME mach_o_be_vec |
| 2835 | #define TARGET_STRING "mach-o-be" |
| 2836 | #define TARGET_BIG_ENDIAN 1 |
| 2837 | #define TARGET_ARCHIVE 0 |
| 2838 | |
| 2839 | #include "mach-o-target.c" |
| 2840 | |
| 2841 | #undef TARGET_NAME |
| 2842 | #undef TARGET_STRING |
| 2843 | #undef TARGET_BIG_ENDIAN |
| 2844 | #undef TARGET_ARCHIVE |
| 2845 | |
| 2846 | #define TARGET_NAME mach_o_le_vec |
| 2847 | #define TARGET_STRING "mach-o-le" |
| 2848 | #define TARGET_BIG_ENDIAN 0 |
| 2849 | #define TARGET_ARCHIVE 0 |
| 2850 | |
| 2851 | #include "mach-o-target.c" |
| 2852 | |
| 2853 | #undef TARGET_NAME |
| 2854 | #undef TARGET_STRING |
| 2855 | #undef TARGET_BIG_ENDIAN |
| 2856 | #undef TARGET_ARCHIVE |
| 2857 | |
| 2858 | #define TARGET_NAME mach_o_fat_vec |
| 2859 | #define TARGET_STRING "mach-o-fat" |
| 2860 | #define TARGET_BIG_ENDIAN 1 |
| 2861 | #define TARGET_ARCHIVE 1 |
| 2862 | |
| 2863 | #include "mach-o-target.c" |
| 2864 | |
| 2865 | #undef TARGET_NAME |
| 2866 | #undef TARGET_STRING |
| 2867 | #undef TARGET_BIG_ENDIAN |
| 2868 | #undef TARGET_ARCHIVE |