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2009-09-30 Tristan Gingold <gingold@adacore.com>
[deliverable/binutils-gdb.git] / bfd / mach-o.c
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 #define FILE_ALIGN(off, algn) \
35 (((off) + ((file_ptr) 1 << (algn)) - 1) & ((file_ptr) -1 << (algn)))
36
37 static int bfd_mach_o_scan_read_symtab_symbols (bfd *);
38
39 unsigned int
40 bfd_mach_o_version (bfd *abfd)
41 {
42 bfd_mach_o_data_struct *mdata = NULL;
43
44 BFD_ASSERT (bfd_mach_o_valid (abfd));
45 mdata = bfd_mach_o_get_data (abfd);
46
47 return mdata->header.version;
48 }
49
50 bfd_boolean
51 bfd_mach_o_valid (bfd *abfd)
52 {
53 if (abfd == NULL || abfd->xvec == NULL)
54 return FALSE;
55
56 if (abfd->xvec->flavour != bfd_target_mach_o_flavour)
57 return FALSE;
58
59 if (bfd_mach_o_get_data (abfd) == NULL)
60 return FALSE;
61 return TRUE;
62 }
63
64 static INLINE bfd_boolean
65 mach_o_wide_p (bfd_mach_o_header *header)
66 {
67 switch (header->version)
68 {
69 case 1:
70 return FALSE;
71 case 2:
72 return TRUE;
73 default:
74 BFD_FAIL ();
75 return FALSE;
76 }
77 }
78
79 static INLINE bfd_boolean
80 bfd_mach_o_wide_p (bfd *abfd)
81 {
82 return mach_o_wide_p (&bfd_mach_o_get_data (abfd)->header);
83 }
84
85 /* Tables to translate well known Mach-O segment/section names to bfd
86 names. Use of canonical names (such as .text or .debug_frame) is required
87 by gdb. */
88
89 struct mach_o_section_name_xlat
90 {
91 const char *bfd_name;
92 const char *mach_o_name;
93 };
94
95 static const struct mach_o_section_name_xlat dwarf_section_names_xlat[] =
96 {
97 { ".debug_frame", "__debug_frame" },
98 { ".debug_info", "__debug_info" },
99 { ".debug_abbrev", "__debug_abbrev" },
100 { ".debug_aranges", "__debug_aranges" },
101 { ".debug_macinfo", "__debug_macinfo" },
102 { ".debug_line", "__debug_line" },
103 { ".debug_loc", "__debug_loc" },
104 { ".debug_pubnames", "__debug_pubnames" },
105 { ".debug_pubtypes", "__debug_pubtypes" },
106 { ".debug_str", "__debug_str" },
107 { ".debug_ranges", "__debug_ranges" },
108 { NULL, NULL}
109 };
110
111 static const struct mach_o_section_name_xlat text_section_names_xlat[] =
112 {
113 { ".text", "__text" },
114 { ".const", "__const" },
115 { ".cstring", "__cstring" },
116 { ".eh_frame", "__eh_frame" },
117 { NULL, NULL}
118 };
119
120 static const struct mach_o_section_name_xlat data_section_names_xlat[] =
121 {
122 { ".data", "__data" },
123 { ".bss", "__bss" },
124 { NULL, NULL}
125 };
126
127 struct mach_o_segment_name_xlat
128 {
129 const char *segname;
130 const struct mach_o_section_name_xlat *sections;
131 };
132
133 static const struct mach_o_segment_name_xlat segsec_names_xlat[] =
134 {
135 { "__DWARF", dwarf_section_names_xlat },
136 { "__TEXT", text_section_names_xlat },
137 { "__DATA", data_section_names_xlat },
138 { NULL, NULL }
139 };
140
141
142 /* Mach-O to bfd names. */
143
144 static char *
145 bfd_mach_o_convert_section_name_to_bfd (bfd *abfd, bfd_mach_o_section *section)
146 {
147 const struct mach_o_segment_name_xlat *seg;
148 char *res;
149 unsigned int len;
150 const char *pfx = "";
151
152 for (seg = segsec_names_xlat; seg->segname; seg++)
153 {
154 if (strcmp (seg->segname, section->segname) == 0)
155 {
156 const struct mach_o_section_name_xlat *sec;
157
158 for (sec = seg->sections; sec->mach_o_name; sec++)
159 {
160 if (strcmp (sec->mach_o_name, section->sectname) == 0)
161 {
162 len = strlen (sec->bfd_name);
163 res = bfd_alloc (abfd, len + 1);
164
165 if (res == NULL)
166 return NULL;
167 strcpy (res, sec->bfd_name);
168 return res;
169 }
170 }
171 }
172 }
173
174 len = strlen (section->segname) + 1
175 + strlen (section->sectname) + 1;
176
177 /* Put "LC_SEGMENT." prefix if the segment name is weird (ie doesn't start
178 with an underscore. */
179 if (section->segname[0] != '_')
180 {
181 static const char seg_pfx[] = "LC_SEGMENT.";
182
183 pfx = seg_pfx;
184 len += sizeof (seg_pfx) - 1;
185 }
186
187 res = bfd_alloc (abfd, len);
188 if (res == NULL)
189 return NULL;
190 snprintf (res, len, "%s%s.%s", pfx, section->segname, section->sectname);
191 return res;
192 }
193
194 /* Convert a bfd section name to a Mach-O segment + section name. */
195
196 static void
197 bfd_mach_o_convert_section_name_to_mach_o (bfd *abfd ATTRIBUTE_UNUSED,
198 asection *sect,
199 bfd_mach_o_section *section)
200 {
201 const struct mach_o_segment_name_xlat *seg;
202 const char *name = bfd_get_section_name (abfd, sect);
203 const char *dot;
204 unsigned int len;
205 unsigned int seglen;
206 unsigned int seclen;
207
208 /* List of well known names. They all start with a dot. */
209 if (name[0] == '.')
210 for (seg = segsec_names_xlat; seg->segname; seg++)
211 {
212 const struct mach_o_section_name_xlat *sec;
213
214 for (sec = seg->sections; sec->mach_o_name; sec++)
215 {
216 if (strcmp (sec->bfd_name, name) == 0)
217 {
218 strcpy (section->segname, seg->segname);
219 strcpy (section->sectname, sec->mach_o_name);
220 return;
221 }
222 }
223 }
224
225 /* Strip LC_SEGMENT. prefix. */
226 if (strncmp (name, "LC_SEGMENT.", 11) == 0)
227 name += 11;
228
229 /* Find a dot. */
230 dot = strchr (name, '.');
231 len = strlen (name);
232
233 /* Try to split name into segment and section names. */
234 if (dot && dot != name)
235 {
236 seglen = dot - name;
237 seclen = len - (dot + 1 - name);
238
239 if (seglen < 16 && seclen < 16)
240 {
241 memcpy (section->segname, name, seglen);
242 section->segname[seglen] = 0;
243 memcpy (section->sectname, dot + 1, seclen);
244 section->sectname[seclen] = 0;
245 return;
246 }
247 }
248
249 if (len > 16)
250 len = 16;
251 memcpy (section->segname, name, len);
252 section->segname[len] = 0;
253 memcpy (section->sectname, name, len);
254 section->sectname[len] = 0;
255 }
256
257 /* Copy any private info we understand from the input symbol
258 to the output symbol. */
259
260 bfd_boolean
261 bfd_mach_o_bfd_copy_private_symbol_data (bfd *ibfd ATTRIBUTE_UNUSED,
262 asymbol *isymbol ATTRIBUTE_UNUSED,
263 bfd *obfd ATTRIBUTE_UNUSED,
264 asymbol *osymbol ATTRIBUTE_UNUSED)
265 {
266 return TRUE;
267 }
268
269 /* Copy any private info we understand from the input section
270 to the output section. */
271
272 bfd_boolean
273 bfd_mach_o_bfd_copy_private_section_data (bfd *ibfd ATTRIBUTE_UNUSED,
274 asection *isection ATTRIBUTE_UNUSED,
275 bfd *obfd ATTRIBUTE_UNUSED,
276 asection *osection ATTRIBUTE_UNUSED)
277 {
278 return TRUE;
279 }
280
281 /* Copy any private info we understand from the input bfd
282 to the output bfd. */
283
284 bfd_boolean
285 bfd_mach_o_bfd_copy_private_bfd_data (bfd *ibfd, bfd *obfd)
286 {
287 if (bfd_get_flavour (ibfd) != bfd_target_mach_o_flavour
288 || bfd_get_flavour (obfd) != bfd_target_mach_o_flavour)
289 return TRUE;
290
291 BFD_ASSERT (bfd_mach_o_valid (ibfd));
292 BFD_ASSERT (bfd_mach_o_valid (obfd));
293
294 /* FIXME: copy commands. */
295
296 return TRUE;
297 }
298
299 /* Count the total number of symbols. */
300
301 static long
302 bfd_mach_o_count_symbols (bfd *abfd)
303 {
304 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
305
306 if (mdata->symtab == NULL)
307 return 0;
308 return mdata->symtab->nsyms;
309 }
310
311 long
312 bfd_mach_o_get_symtab_upper_bound (bfd *abfd)
313 {
314 long nsyms = bfd_mach_o_count_symbols (abfd);
315
316 return ((nsyms + 1) * sizeof (asymbol *));
317 }
318
319 long
320 bfd_mach_o_canonicalize_symtab (bfd *abfd, asymbol **alocation)
321 {
322 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
323 long nsyms = bfd_mach_o_count_symbols (abfd);
324 bfd_mach_o_symtab_command *sym = mdata->symtab;
325 unsigned long j;
326
327 if (nsyms < 0)
328 return nsyms;
329
330 if (bfd_mach_o_scan_read_symtab_symbols (abfd) != 0)
331 {
332 fprintf (stderr,
333 "bfd_mach_o_canonicalize_symtab: unable to load symbols\n");
334 return 0;
335 }
336
337 BFD_ASSERT (sym->symbols != NULL);
338
339 for (j = 0; j < sym->nsyms; j++)
340 alocation[j] = &sym->symbols[j].symbol;
341
342 alocation[j] = NULL;
343
344 return nsyms;
345 }
346
347 void
348 bfd_mach_o_get_symbol_info (bfd *abfd ATTRIBUTE_UNUSED,
349 asymbol *symbol,
350 symbol_info *ret)
351 {
352 bfd_symbol_info (symbol, ret);
353 }
354
355 void
356 bfd_mach_o_print_symbol (bfd *abfd,
357 PTR afile,
358 asymbol *symbol,
359 bfd_print_symbol_type how)
360 {
361 FILE *file = (FILE *) afile;
362 const char *name;
363 bfd_mach_o_asymbol *asym = (bfd_mach_o_asymbol *)symbol;
364
365 switch (how)
366 {
367 case bfd_print_symbol_name:
368 fprintf (file, "%s", symbol->name);
369 break;
370 default:
371 bfd_print_symbol_vandf (abfd, (PTR) file, symbol);
372 if (asym->n_type & BFD_MACH_O_N_STAB)
373 name = bfd_get_stab_name (asym->n_type);
374 else
375 switch (asym->n_type & BFD_MACH_O_N_TYPE)
376 {
377 case BFD_MACH_O_N_UNDF:
378 name = "UND";
379 break;
380 case BFD_MACH_O_N_ABS:
381 name = "ABS";
382 break;
383 case BFD_MACH_O_N_INDR:
384 name = "INDR";
385 break;
386 case BFD_MACH_O_N_PBUD:
387 name = "PBUD";
388 break;
389 case BFD_MACH_O_N_SECT:
390 name = "SECT";
391 break;
392 default:
393 name = "???";
394 break;
395 }
396 if (name == NULL)
397 name = "";
398 fprintf (file, " %02x %-6s %02x %04x",
399 asym->n_type, name, asym->n_sect, asym->n_desc);
400 if ((asym->n_type & BFD_MACH_O_N_STAB) == 0
401 && (asym->n_type & BFD_MACH_O_N_TYPE) == BFD_MACH_O_N_SECT)
402 fprintf (file, " %-5s", symbol->section->name);
403 fprintf (file, " %s", symbol->name);
404 }
405 }
406
407 static void
408 bfd_mach_o_convert_architecture (bfd_mach_o_cpu_type mtype,
409 bfd_mach_o_cpu_subtype msubtype ATTRIBUTE_UNUSED,
410 enum bfd_architecture *type,
411 unsigned long *subtype)
412 {
413 *subtype = bfd_arch_unknown;
414
415 switch (mtype)
416 {
417 case BFD_MACH_O_CPU_TYPE_VAX: *type = bfd_arch_vax; break;
418 case BFD_MACH_O_CPU_TYPE_MC680x0: *type = bfd_arch_m68k; break;
419 case BFD_MACH_O_CPU_TYPE_I386:
420 *type = bfd_arch_i386;
421 *subtype = bfd_mach_i386_i386;
422 break;
423 case BFD_MACH_O_CPU_TYPE_X86_64:
424 *type = bfd_arch_i386;
425 *subtype = bfd_mach_x86_64;
426 break;
427 case BFD_MACH_O_CPU_TYPE_MIPS: *type = bfd_arch_mips; break;
428 case BFD_MACH_O_CPU_TYPE_MC98000: *type = bfd_arch_m98k; break;
429 case BFD_MACH_O_CPU_TYPE_HPPA: *type = bfd_arch_hppa; break;
430 case BFD_MACH_O_CPU_TYPE_ARM: *type = bfd_arch_arm; break;
431 case BFD_MACH_O_CPU_TYPE_MC88000: *type = bfd_arch_m88k; break;
432 case BFD_MACH_O_CPU_TYPE_SPARC:
433 *type = bfd_arch_sparc;
434 *subtype = bfd_mach_sparc;
435 break;
436 case BFD_MACH_O_CPU_TYPE_I860: *type = bfd_arch_i860; break;
437 case BFD_MACH_O_CPU_TYPE_ALPHA: *type = bfd_arch_alpha; break;
438 case BFD_MACH_O_CPU_TYPE_POWERPC:
439 *type = bfd_arch_powerpc;
440 *subtype = bfd_mach_ppc;
441 break;
442 case BFD_MACH_O_CPU_TYPE_POWERPC_64:
443 *type = bfd_arch_powerpc;
444 *subtype = bfd_mach_ppc64;
445 break;
446 default:
447 *type = bfd_arch_unknown;
448 break;
449 }
450 }
451
452 static bfd_boolean
453 bfd_mach_o_write_header (bfd *abfd, bfd_mach_o_header *header)
454 {
455 unsigned char buf[32];
456 unsigned int size;
457
458 size = mach_o_wide_p (header) ?
459 BFD_MACH_O_HEADER_64_SIZE : BFD_MACH_O_HEADER_SIZE;
460
461 bfd_h_put_32 (abfd, header->magic, buf + 0);
462 bfd_h_put_32 (abfd, header->cputype, buf + 4);
463 bfd_h_put_32 (abfd, header->cpusubtype, buf + 8);
464 bfd_h_put_32 (abfd, header->filetype, buf + 12);
465 bfd_h_put_32 (abfd, header->ncmds, buf + 16);
466 bfd_h_put_32 (abfd, header->sizeofcmds, buf + 20);
467 bfd_h_put_32 (abfd, header->flags, buf + 24);
468
469 if (mach_o_wide_p (header))
470 bfd_h_put_32 (abfd, header->reserved, buf + 28);
471
472 if (bfd_seek (abfd, 0, SEEK_SET) != 0
473 || bfd_bwrite ((PTR) buf, size, abfd) != size)
474 return FALSE;
475
476 return TRUE;
477 }
478
479 static int
480 bfd_mach_o_scan_write_thread (bfd *abfd, bfd_mach_o_load_command *command)
481 {
482 bfd_mach_o_thread_command *cmd = &command->command.thread;
483 unsigned int i;
484 unsigned char buf[8];
485 unsigned int offset;
486 unsigned int nflavours;
487
488 BFD_ASSERT ((command->type == BFD_MACH_O_LC_THREAD)
489 || (command->type == BFD_MACH_O_LC_UNIXTHREAD));
490
491 offset = 8;
492 nflavours = 0;
493 for (i = 0; i < cmd->nflavours; i++)
494 {
495 BFD_ASSERT ((cmd->flavours[i].size % 4) == 0);
496 BFD_ASSERT (cmd->flavours[i].offset == (command->offset + offset + 8));
497
498 bfd_h_put_32 (abfd, cmd->flavours[i].flavour, buf);
499 bfd_h_put_32 (abfd, (cmd->flavours[i].size / 4), buf + 4);
500
501 if (bfd_seek (abfd, command->offset + offset, SEEK_SET) != 0
502 || bfd_bwrite ((PTR) buf, 8, abfd) != 8)
503 return -1;
504
505 offset += cmd->flavours[i].size + 8;
506 }
507
508 return 0;
509 }
510
511 long
512 bfd_mach_o_get_reloc_upper_bound (bfd *abfd ATTRIBUTE_UNUSED,
513 asection *asect)
514 {
515 return (asect->reloc_count + 1) * sizeof (arelent *);
516 }
517
518 static int
519 bfd_mach_o_canonicalize_one_reloc (bfd *abfd, char *buf,
520 arelent *res, asymbol **syms)
521 {
522 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
523 bfd_mach_o_backend_data *bed = bfd_mach_o_get_backend_data (abfd);
524 bfd_mach_o_reloc_info reloc;
525 bfd_vma addr;
526 bfd_vma symnum;
527 asymbol **sym;
528
529 addr = bfd_get_32 (abfd, buf + 0);
530 symnum = bfd_get_32 (abfd, buf + 4);
531
532 if (addr & BFD_MACH_O_SR_SCATTERED)
533 {
534 unsigned int j;
535
536 /* Scattered relocation.
537 Extract section and offset from r_value. */
538 res->sym_ptr_ptr = NULL;
539 res->addend = 0;
540 for (j = 0; j < mdata->nsects; j++)
541 {
542 bfd_mach_o_section *sect = mdata->sections[j];
543 if (symnum >= sect->addr && symnum < sect->addr + sect->size)
544 {
545 res->sym_ptr_ptr = sect->bfdsection->symbol_ptr_ptr;
546 res->addend = symnum - sect->addr;
547 break;
548 }
549 }
550 res->address = BFD_MACH_O_GET_SR_ADDRESS (addr);
551 reloc.r_type = BFD_MACH_O_GET_SR_TYPE (addr);
552 reloc.r_length = BFD_MACH_O_GET_SR_LENGTH (addr);
553 reloc.r_pcrel = addr & BFD_MACH_O_SR_PCREL;
554 reloc.r_scattered = 1;
555 }
556 else
557 {
558 unsigned int num = BFD_MACH_O_GET_R_SYMBOLNUM (symnum);
559 res->addend = 0;
560 res->address = addr;
561 if (symnum & BFD_MACH_O_R_EXTERN)
562 sym = syms + num;
563 else
564 {
565 BFD_ASSERT (num != 0);
566 BFD_ASSERT (num <= mdata->nsects);
567 sym = mdata->sections[num - 1]->bfdsection->symbol_ptr_ptr;
568 }
569 res->sym_ptr_ptr = sym;
570 reloc.r_type = BFD_MACH_O_GET_R_TYPE (symnum);
571 reloc.r_length = BFD_MACH_O_GET_R_LENGTH (symnum);
572 reloc.r_pcrel = (symnum & BFD_MACH_O_R_PCREL) ? 1 : 0;
573 reloc.r_scattered = 0;
574 }
575
576 if (!(*bed->_bfd_mach_o_swap_reloc_in)(res, &reloc))
577 return -1;
578 return 0;
579 }
580
581 static int
582 bfd_mach_o_canonicalize_relocs (bfd *abfd, unsigned long filepos,
583 unsigned long count,
584 arelent *res, asymbol **syms)
585 {
586 unsigned long i;
587 char *native_relocs;
588 bfd_size_type native_size;
589
590 /* Allocate and read relocs. */
591 native_size = count * BFD_MACH_O_RELENT_SIZE;
592 native_relocs = bfd_malloc (native_size);
593 if (native_relocs == NULL)
594 return -1;
595
596 if (bfd_seek (abfd, filepos, SEEK_SET) != 0
597 || bfd_bread (native_relocs, native_size, abfd) != native_size)
598 goto err;
599
600 for (i = 0; i < count; i++)
601 {
602 char *buf = native_relocs + BFD_MACH_O_RELENT_SIZE * i;
603
604 if (bfd_mach_o_canonicalize_one_reloc (abfd, buf, &res[i], syms) < 0)
605 goto err;
606 }
607 free (native_relocs);
608 return i;
609 err:
610 free (native_relocs);
611 return -1;
612 }
613
614 long
615 bfd_mach_o_canonicalize_reloc (bfd *abfd, asection *asect,
616 arelent **rels, asymbol **syms)
617 {
618 bfd_mach_o_backend_data *bed = bfd_mach_o_get_backend_data (abfd);
619 unsigned long i;
620 arelent *res;
621
622 if (asect->reloc_count == 0)
623 return 0;
624
625 /* No need to go further if we don't know how to read relocs. */
626 if (bed->_bfd_mach_o_swap_reloc_in == NULL)
627 return 0;
628
629 res = bfd_malloc (asect->reloc_count * sizeof (arelent));
630 if (res == NULL)
631 return -1;
632
633 if (bfd_mach_o_canonicalize_relocs (abfd, asect->rel_filepos,
634 asect->reloc_count, res, syms) < 0)
635 {
636 free (res);
637 return -1;
638 }
639
640 for (i = 0; i < asect->reloc_count; i++)
641 rels[i] = &res[i];
642 rels[i] = NULL;
643 asect->relocation = res;
644
645 return i;
646 }
647
648 long
649 bfd_mach_o_get_dynamic_reloc_upper_bound (bfd *abfd)
650 {
651 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
652
653 if (mdata->dysymtab == NULL)
654 return 1;
655 return (mdata->dysymtab->nextrel + mdata->dysymtab->nlocrel)
656 * sizeof (arelent *);
657 }
658
659 long
660 bfd_mach_o_canonicalize_dynamic_reloc (bfd *abfd, arelent **rels,
661 struct bfd_symbol **syms)
662 {
663 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
664 bfd_mach_o_dysymtab_command *dysymtab = mdata->dysymtab;
665 bfd_mach_o_backend_data *bed = bfd_mach_o_get_backend_data (abfd);
666 unsigned long i;
667 arelent *res;
668
669 if (dysymtab == NULL)
670 return 0;
671 if (dysymtab->nextrel == 0 && dysymtab->nlocrel == 0)
672 return 0;
673
674 /* No need to go further if we don't know how to read relocs. */
675 if (bed->_bfd_mach_o_swap_reloc_in == NULL)
676 return 0;
677
678 res = bfd_malloc ((dysymtab->nextrel + dysymtab->nlocrel) * sizeof (arelent));
679 if (res == NULL)
680 return -1;
681
682 if (bfd_mach_o_canonicalize_relocs (abfd, dysymtab->extreloff,
683 dysymtab->nextrel, res, syms) < 0)
684 {
685 free (res);
686 return -1;
687 }
688
689 if (bfd_mach_o_canonicalize_relocs (abfd, dysymtab->locreloff,
690 dysymtab->nlocrel,
691 res + dysymtab->nextrel, syms) < 0)
692 {
693 free (res);
694 return -1;
695 }
696
697 for (i = 0; i < dysymtab->nextrel + dysymtab->nlocrel; i++)
698 rels[i] = &res[i];
699 rels[i] = NULL;
700 return i;
701 }
702
703 static bfd_boolean
704 bfd_mach_o_scan_write_relocs (bfd *abfd, bfd_mach_o_section *section)
705 {
706 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
707 unsigned int i;
708 arelent **entries;
709 asection *sec;
710 bfd_mach_o_backend_data *bed = bfd_mach_o_get_backend_data (abfd);
711
712 sec = section->bfdsection;
713 if (sec->reloc_count == 0)
714 return TRUE;
715
716 if (bed->_bfd_mach_o_swap_reloc_out == NULL)
717 return TRUE;
718
719 /* Allocate relocation room. */
720 mdata->filelen = FILE_ALIGN(mdata->filelen, 2);
721 section->nreloc = sec->reloc_count;
722 sec->rel_filepos = mdata->filelen;
723 section->reloff = sec->rel_filepos;
724 mdata->filelen += sec->reloc_count * BFD_MACH_O_RELENT_SIZE;
725
726 if (bfd_seek (abfd, section->reloff, SEEK_SET) != 0)
727 return FALSE;
728
729 /* Convert and write. */
730 entries = section->bfdsection->orelocation;
731 for (i = 0; i < section->nreloc; i++)
732 {
733 arelent *rel = entries[i];
734 char buf[8];
735 bfd_mach_o_reloc_info info, *pinfo = &info;
736
737 /* Convert relocation to an intermediate representation. */
738 if (!(*bed->_bfd_mach_o_swap_reloc_out) (rel, pinfo))
739 return FALSE;
740
741 /* Lower the relocation info. */
742 if (pinfo->r_scattered)
743 {
744 unsigned long v;
745
746 v = BFD_MACH_O_SR_SCATTERED
747 | (pinfo->r_pcrel ? BFD_MACH_O_SR_PCREL : 0)
748 | BFD_MACH_O_SET_SR_LENGTH(pinfo->r_length)
749 | BFD_MACH_O_SET_SR_TYPE(pinfo->r_type)
750 | BFD_MACH_O_SET_SR_ADDRESS(pinfo->r_address);
751 bfd_put_32 (abfd, v, buf);
752 bfd_put_32 (abfd, pinfo->r_value, buf + 4);
753 }
754 else
755 {
756 unsigned long v;
757
758 bfd_put_32 (abfd, pinfo->r_address, buf);
759 v = BFD_MACH_O_SET_R_SYMBOLNUM (pinfo->r_value)
760 | (pinfo->r_pcrel ? BFD_MACH_O_R_PCREL : 0)
761 | BFD_MACH_O_SET_R_LENGTH (pinfo->r_length)
762 | (pinfo->r_extern ? BFD_MACH_O_R_EXTERN : 0)
763 | BFD_MACH_O_SET_R_TYPE (pinfo->r_type);
764 bfd_put_32 (abfd, v, buf + 4);
765 }
766
767 if (bfd_bwrite ((PTR) buf, BFD_MACH_O_RELENT_SIZE, abfd)
768 != BFD_MACH_O_RELENT_SIZE)
769 return FALSE;
770 }
771 return TRUE;
772 }
773
774 static int
775 bfd_mach_o_scan_write_section_32 (bfd *abfd, bfd_mach_o_section *section)
776 {
777 unsigned char buf[BFD_MACH_O_SECTION_SIZE];
778
779 memcpy (buf, section->sectname, 16);
780 memcpy (buf + 16, section->segname, 16);
781 bfd_h_put_32 (abfd, section->addr, buf + 32);
782 bfd_h_put_32 (abfd, section->size, buf + 36);
783 bfd_h_put_32 (abfd, section->offset, buf + 40);
784 bfd_h_put_32 (abfd, section->align, buf + 44);
785 bfd_h_put_32 (abfd, section->reloff, buf + 48);
786 bfd_h_put_32 (abfd, section->nreloc, buf + 52);
787 bfd_h_put_32 (abfd, section->flags, buf + 56);
788 bfd_h_put_32 (abfd, section->reserved1, buf + 60);
789 bfd_h_put_32 (abfd, section->reserved2, buf + 64);
790
791 if (bfd_bwrite ((PTR) buf, BFD_MACH_O_SECTION_SIZE, abfd)
792 != BFD_MACH_O_SECTION_SIZE)
793 return -1;
794
795 return 0;
796 }
797
798 static int
799 bfd_mach_o_scan_write_section_64 (bfd *abfd, bfd_mach_o_section *section)
800 {
801 unsigned char buf[BFD_MACH_O_SECTION_64_SIZE];
802
803 memcpy (buf, section->sectname, 16);
804 memcpy (buf + 16, section->segname, 16);
805 bfd_h_put_64 (abfd, section->addr, buf + 32);
806 bfd_h_put_64 (abfd, section->size, buf + 40);
807 bfd_h_put_32 (abfd, section->offset, buf + 48);
808 bfd_h_put_32 (abfd, section->align, buf + 52);
809 bfd_h_put_32 (abfd, section->reloff, buf + 56);
810 bfd_h_put_32 (abfd, section->nreloc, buf + 60);
811 bfd_h_put_32 (abfd, section->flags, buf + 64);
812 bfd_h_put_32 (abfd, section->reserved1, buf + 68);
813 bfd_h_put_32 (abfd, section->reserved2, buf + 72);
814 bfd_h_put_32 (abfd, section->reserved3, buf + 76);
815
816 if (bfd_bwrite ((PTR) buf, BFD_MACH_O_SECTION_64_SIZE, abfd)
817 != BFD_MACH_O_SECTION_64_SIZE)
818 return -1;
819
820 return 0;
821 }
822
823 static int
824 bfd_mach_o_scan_write_segment_32 (bfd *abfd, bfd_mach_o_load_command *command)
825 {
826 unsigned char buf[BFD_MACH_O_LC_SEGMENT_SIZE];
827 bfd_mach_o_segment_command *seg = &command->command.segment;
828 unsigned long i;
829
830 BFD_ASSERT (command->type == BFD_MACH_O_LC_SEGMENT);
831
832 for (i = 0; i < seg->nsects; i++)
833 if (!bfd_mach_o_scan_write_relocs (abfd, &seg->sections[i]))
834 return -1;
835
836 memcpy (buf, seg->segname, 16);
837 bfd_h_put_32 (abfd, seg->vmaddr, buf + 16);
838 bfd_h_put_32 (abfd, seg->vmsize, buf + 20);
839 bfd_h_put_32 (abfd, seg->fileoff, buf + 24);
840 bfd_h_put_32 (abfd, seg->filesize, buf + 28);
841 bfd_h_put_32 (abfd, seg->maxprot, buf + 32);
842 bfd_h_put_32 (abfd, seg->initprot, buf + 36);
843 bfd_h_put_32 (abfd, seg->nsects, buf + 40);
844 bfd_h_put_32 (abfd, seg->flags, buf + 44);
845
846 if (bfd_seek (abfd, command->offset + 8, SEEK_SET) != 0
847 || (bfd_bwrite ((PTR) buf, BFD_MACH_O_LC_SEGMENT_SIZE - 8, abfd)
848 != BFD_MACH_O_LC_SEGMENT_SIZE - 8))
849 return -1;
850
851 for (i = 0; i < seg->nsects; i++)
852 if (bfd_mach_o_scan_write_section_32 (abfd, &seg->sections[i]))
853 return -1;
854
855 return 0;
856 }
857
858 static int
859 bfd_mach_o_scan_write_segment_64 (bfd *abfd, bfd_mach_o_load_command *command)
860 {
861 unsigned char buf[BFD_MACH_O_LC_SEGMENT_64_SIZE];
862 bfd_mach_o_segment_command *seg = &command->command.segment;
863 unsigned long i;
864
865 BFD_ASSERT (command->type == BFD_MACH_O_LC_SEGMENT_64);
866
867 for (i = 0; i < seg->nsects; i++)
868 if (!bfd_mach_o_scan_write_relocs (abfd, &seg->sections[i]))
869 return -1;
870
871 memcpy (buf, seg->segname, 16);
872 bfd_h_put_64 (abfd, seg->vmaddr, buf + 16);
873 bfd_h_put_64 (abfd, seg->vmsize, buf + 24);
874 bfd_h_put_64 (abfd, seg->fileoff, buf + 32);
875 bfd_h_put_64 (abfd, seg->filesize, buf + 40);
876 bfd_h_put_32 (abfd, seg->maxprot, buf + 48);
877 bfd_h_put_32 (abfd, seg->initprot, buf + 52);
878 bfd_h_put_32 (abfd, seg->nsects, buf + 56);
879 bfd_h_put_32 (abfd, seg->flags, buf + 60);
880
881 if (bfd_seek (abfd, command->offset + 8, SEEK_SET) != 0
882 || (bfd_bwrite ((PTR) buf, BFD_MACH_O_LC_SEGMENT_64_SIZE - 8, abfd)
883 != BFD_MACH_O_LC_SEGMENT_64_SIZE - 8))
884 return -1;
885
886 for (i = 0; i < seg->nsects; i++)
887 if (bfd_mach_o_scan_write_section_64 (abfd, &seg->sections[i]))
888 return -1;
889
890 return 0;
891 }
892
893 static bfd_boolean
894 bfd_mach_o_scan_write_symtab (bfd *abfd, bfd_mach_o_load_command *command)
895 {
896 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
897 bfd_mach_o_symtab_command *sym = &command->command.symtab;
898 unsigned char buf[16];
899 unsigned long i;
900 unsigned int wide = bfd_mach_o_wide_p (abfd);
901 unsigned int symlen = wide ? BFD_MACH_O_NLIST_64_SIZE : BFD_MACH_O_NLIST_SIZE;
902 struct bfd_strtab_hash *strtab;
903 asymbol **symbols = bfd_get_outsymbols (abfd);
904
905 BFD_ASSERT (command->type == BFD_MACH_O_LC_SYMTAB);
906
907 /* Write the symbols first. */
908 mdata->filelen = FILE_ALIGN(mdata->filelen, wide ? 3 : 2);
909 sym->symoff = mdata->filelen;
910 if (bfd_seek (abfd, sym->symoff, SEEK_SET) != 0)
911 return FALSE;
912
913 sym->nsyms = bfd_get_symcount (abfd);
914 mdata->filelen += sym->nsyms * symlen;
915
916 strtab = _bfd_stringtab_init ();
917 if (strtab == NULL)
918 return FALSE;
919
920 for (i = 0; i < sym->nsyms; i++)
921 {
922 unsigned char buf[16];
923 bfd_size_type index;
924 bfd_mach_o_asymbol *s = (bfd_mach_o_asymbol *)symbols[i];
925
926 /* Compute name index. */
927 /* An index of 0 always means the empty string. */
928 if (s->symbol.name == 0 || s->symbol.name[0] == '\0')
929 index = 0;
930 else
931 {
932 index = _bfd_stringtab_add (strtab, s->symbol.name, TRUE, FALSE);
933 if (index == (bfd_size_type) -1)
934 goto err;
935 }
936 bfd_h_put_32 (abfd, index, buf);
937 bfd_h_put_8 (abfd, s->n_type, buf + 4);
938 bfd_h_put_8 (abfd, s->n_sect, buf + 5);
939 bfd_h_put_16 (abfd, s->n_desc, buf + 6);
940 if (wide)
941 bfd_h_put_64 (abfd, s->symbol.section->vma + s->symbol.value, buf + 8);
942 else
943 bfd_h_put_32 (abfd, s->symbol.section->vma + s->symbol.value, buf + 8);
944
945 if (bfd_bwrite ((PTR) buf, symlen, abfd) != symlen)
946 goto err;
947 }
948 sym->strsize = _bfd_stringtab_size (strtab);
949 sym->stroff = mdata->filelen;
950 mdata->filelen += sym->strsize;
951
952 if (_bfd_stringtab_emit (abfd, strtab) != TRUE)
953 goto err;
954 _bfd_stringtab_free (strtab);
955
956 /* The command. */
957 bfd_h_put_32 (abfd, sym->symoff, buf);
958 bfd_h_put_32 (abfd, sym->nsyms, buf + 4);
959 bfd_h_put_32 (abfd, sym->stroff, buf + 8);
960 bfd_h_put_32 (abfd, sym->strsize, buf + 12);
961
962 if (bfd_seek (abfd, command->offset + 8, SEEK_SET) != 0
963 || bfd_bwrite ((PTR) buf, 16, abfd) != 16)
964 return FALSE;
965
966 return TRUE;
967
968 err:
969 _bfd_stringtab_free (strtab);
970 return FALSE;
971 }
972
973 /* Process the symbols and generate Mach-O specific fields.
974 Number them. */
975
976 static bfd_boolean
977 bfd_mach_o_mangle_symbols (bfd *abfd)
978 {
979 unsigned long i;
980 asymbol **symbols = bfd_get_outsymbols (abfd);
981
982 for (i = 0; i < bfd_get_symcount (abfd); i++)
983 {
984 bfd_mach_o_asymbol *s = (bfd_mach_o_asymbol *)symbols[i];
985
986 if (s->n_type == BFD_MACH_O_N_UNDF && !(s->symbol.flags & BSF_DEBUGGING))
987 {
988 /* As genuine Mach-O symbols type shouldn't be N_UNDF (undefined
989 symbols should be N_UNDEF | N_EXT), we suppose the back-end
990 values haven't been set. */
991 if (s->symbol.section == bfd_abs_section_ptr)
992 s->n_type = BFD_MACH_O_N_ABS;
993 else if (s->symbol.section == bfd_und_section_ptr)
994 {
995 s->n_type = BFD_MACH_O_N_UNDF;
996 if (s->symbol.flags & BSF_WEAK)
997 s->n_desc |= BFD_MACH_O_N_WEAK_REF;
998 }
999 else if (s->symbol.section == bfd_com_section_ptr)
1000 s->n_type = BFD_MACH_O_N_UNDF | BFD_MACH_O_N_EXT;
1001 else
1002 s->n_type = BFD_MACH_O_N_SECT;
1003
1004 if (s->symbol.flags & BSF_GLOBAL)
1005 s->n_type |= BFD_MACH_O_N_EXT;
1006 }
1007
1008 /* Compute section index. */
1009 if (s->symbol.section != bfd_abs_section_ptr
1010 && s->symbol.section != bfd_und_section_ptr
1011 && s->symbol.section != bfd_com_section_ptr)
1012 s->n_sect = s->symbol.section->target_index;
1013
1014 /* Number symbols. */
1015 s->symbol.udata.i = i;
1016 }
1017 return TRUE;
1018 }
1019
1020 bfd_boolean
1021 bfd_mach_o_write_contents (bfd *abfd)
1022 {
1023 unsigned int i;
1024 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
1025
1026 if (mdata->header.ncmds == 0)
1027 if (!bfd_mach_o_build_commands (abfd))
1028 return FALSE;
1029
1030 /* Now write header information. */
1031 if (mdata->header.filetype == 0)
1032 {
1033 if (abfd->flags & EXEC_P)
1034 mdata->header.filetype = BFD_MACH_O_MH_EXECUTE;
1035 else if (abfd->flags & DYNAMIC)
1036 mdata->header.filetype = BFD_MACH_O_MH_DYLIB;
1037 else
1038 mdata->header.filetype = BFD_MACH_O_MH_OBJECT;
1039 }
1040 if (!bfd_mach_o_write_header (abfd, &mdata->header))
1041 return FALSE;
1042
1043 /* Assign a number to each symbols. */
1044 if (!bfd_mach_o_mangle_symbols (abfd))
1045 return FALSE;
1046
1047 for (i = 0; i < mdata->header.ncmds; i++)
1048 {
1049 unsigned char buf[8];
1050 bfd_mach_o_load_command *cur = &mdata->commands[i];
1051 unsigned long typeflag;
1052
1053 typeflag = cur->type | (cur->type_required ? BFD_MACH_O_LC_REQ_DYLD : 0);
1054
1055 bfd_h_put_32 (abfd, typeflag, buf);
1056 bfd_h_put_32 (abfd, cur->len, buf + 4);
1057
1058 if (bfd_seek (abfd, cur->offset, SEEK_SET) != 0
1059 || bfd_bwrite ((PTR) buf, 8, abfd) != 8)
1060 return FALSE;
1061
1062 switch (cur->type)
1063 {
1064 case BFD_MACH_O_LC_SEGMENT:
1065 if (bfd_mach_o_scan_write_segment_32 (abfd, cur) != 0)
1066 return FALSE;
1067 break;
1068 case BFD_MACH_O_LC_SEGMENT_64:
1069 if (bfd_mach_o_scan_write_segment_64 (abfd, cur) != 0)
1070 return FALSE;
1071 break;
1072 case BFD_MACH_O_LC_SYMTAB:
1073 if (!bfd_mach_o_scan_write_symtab (abfd, cur))
1074 return FALSE;
1075 break;
1076 case BFD_MACH_O_LC_SYMSEG:
1077 break;
1078 case BFD_MACH_O_LC_THREAD:
1079 case BFD_MACH_O_LC_UNIXTHREAD:
1080 if (bfd_mach_o_scan_write_thread (abfd, cur) != 0)
1081 return FALSE;
1082 break;
1083 case BFD_MACH_O_LC_LOADFVMLIB:
1084 case BFD_MACH_O_LC_IDFVMLIB:
1085 case BFD_MACH_O_LC_IDENT:
1086 case BFD_MACH_O_LC_FVMFILE:
1087 case BFD_MACH_O_LC_PREPAGE:
1088 case BFD_MACH_O_LC_DYSYMTAB:
1089 case BFD_MACH_O_LC_LOAD_DYLIB:
1090 case BFD_MACH_O_LC_LOAD_WEAK_DYLIB:
1091 case BFD_MACH_O_LC_ID_DYLIB:
1092 case BFD_MACH_O_LC_REEXPORT_DYLIB:
1093 case BFD_MACH_O_LC_LOAD_DYLINKER:
1094 case BFD_MACH_O_LC_ID_DYLINKER:
1095 case BFD_MACH_O_LC_PREBOUND_DYLIB:
1096 case BFD_MACH_O_LC_ROUTINES:
1097 case BFD_MACH_O_LC_SUB_FRAMEWORK:
1098 break;
1099 default:
1100 fprintf (stderr,
1101 "unable to write unknown load command 0x%lx\n",
1102 (unsigned long) cur->type);
1103 return FALSE;
1104 }
1105 }
1106
1107 return TRUE;
1108 }
1109
1110 /* Build Mach-O load commands from the sections. */
1111
1112 bfd_boolean
1113 bfd_mach_o_build_commands (bfd *abfd)
1114 {
1115 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
1116 unsigned int wide = mach_o_wide_p (&mdata->header);
1117 bfd_mach_o_segment_command *seg;
1118 bfd_mach_o_section *sections;
1119 asection *sec;
1120 bfd_mach_o_load_command *cmd;
1121 bfd_mach_o_load_command *symtab_cmd;
1122 int target_index;
1123
1124 /* Return now if commands are already built. */
1125 if (mdata->header.ncmds)
1126 return FALSE;
1127
1128 /* Very simple version: 1 command (segment) containing all sections. */
1129 mdata->header.ncmds = 2;
1130 mdata->commands = bfd_alloc (abfd, mdata->header.ncmds
1131 * sizeof (bfd_mach_o_load_command));
1132 if (mdata->commands == NULL)
1133 return FALSE;
1134 cmd = &mdata->commands[0];
1135 seg = &cmd->command.segment;
1136
1137 seg->nsects = bfd_count_sections (abfd);
1138 sections = bfd_alloc (abfd, seg->nsects * sizeof (bfd_mach_o_section));
1139 if (sections == NULL)
1140 return FALSE;
1141 seg->sections = sections;
1142
1143 /* Set segment command. */
1144 if (wide)
1145 {
1146 cmd->type = BFD_MACH_O_LC_SEGMENT_64;
1147 cmd->offset = BFD_MACH_O_HEADER_64_SIZE;
1148 cmd->len = BFD_MACH_O_LC_SEGMENT_64_SIZE
1149 + BFD_MACH_O_SECTION_64_SIZE * seg->nsects;
1150 }
1151 else
1152 {
1153 cmd->type = BFD_MACH_O_LC_SEGMENT;
1154 cmd->offset = BFD_MACH_O_HEADER_SIZE;
1155 cmd->len = BFD_MACH_O_LC_SEGMENT_SIZE
1156 + BFD_MACH_O_SECTION_SIZE * seg->nsects;
1157 }
1158 cmd->type_required = FALSE;
1159 mdata->header.sizeofcmds = cmd->len;
1160 mdata->filelen = cmd->offset + cmd->len;
1161
1162 /* Set symtab command. */
1163 symtab_cmd = &mdata->commands[1];
1164
1165 symtab_cmd->type = BFD_MACH_O_LC_SYMTAB;
1166 symtab_cmd->offset = cmd->offset + cmd->len;
1167 symtab_cmd->len = 6 * 4;
1168 symtab_cmd->type_required = FALSE;
1169
1170 mdata->header.sizeofcmds += symtab_cmd->len;
1171 mdata->filelen += symtab_cmd->len;
1172
1173 /* Fill segment command. */
1174 memset (seg->segname, 0, sizeof (seg->segname));
1175 seg->vmaddr = 0;
1176 seg->fileoff = mdata->filelen;
1177 seg->filesize = 0;
1178 seg->maxprot = BFD_MACH_O_PROT_READ | BFD_MACH_O_PROT_WRITE
1179 | BFD_MACH_O_PROT_EXECUTE;
1180 seg->initprot = seg->maxprot;
1181 seg->flags = 0;
1182
1183 /* Create Mach-O sections. */
1184 target_index = 0;
1185 for (sec = abfd->sections; sec; sec = sec->next)
1186 {
1187 sections->bfdsection = sec;
1188 bfd_mach_o_convert_section_name_to_mach_o (abfd, sec, sections);
1189 sections->addr = bfd_get_section_vma (abfd, sec);
1190 sections->size = bfd_get_section_size (sec);
1191 sections->align = bfd_get_section_alignment (abfd, sec);
1192
1193 if (sections->size != 0)
1194 {
1195 mdata->filelen = FILE_ALIGN (mdata->filelen, sections->align);
1196 sections->offset = mdata->filelen;
1197 }
1198 else
1199 sections->offset = 0;
1200 sections->reloff = 0;
1201 sections->nreloc = 0;
1202 sections->reserved1 = 0;
1203 sections->reserved2 = 0;
1204 sections->reserved3 = 0;
1205
1206 sec->filepos = sections->offset;
1207 sec->target_index = ++target_index;
1208
1209 mdata->filelen += sections->size;
1210 sections++;
1211 }
1212 seg->filesize = mdata->filelen - seg->fileoff;
1213 seg->vmsize = seg->filesize;
1214
1215 return TRUE;
1216 }
1217
1218 /* Set the contents of a section. */
1219
1220 bfd_boolean
1221 bfd_mach_o_set_section_contents (bfd *abfd,
1222 asection *section,
1223 const void * location,
1224 file_ptr offset,
1225 bfd_size_type count)
1226 {
1227 file_ptr pos;
1228
1229 /* This must be done first, because bfd_set_section_contents is
1230 going to set output_has_begun to TRUE. */
1231 if (! abfd->output_has_begun && ! bfd_mach_o_build_commands (abfd))
1232 return FALSE;
1233
1234 if (count == 0)
1235 return TRUE;
1236
1237 pos = section->filepos + offset;
1238 if (bfd_seek (abfd, pos, SEEK_SET) != 0
1239 || bfd_bwrite (location, count, abfd) != count)
1240 return FALSE;
1241
1242 return TRUE;
1243 }
1244
1245 int
1246 bfd_mach_o_sizeof_headers (bfd *a ATTRIBUTE_UNUSED,
1247 struct bfd_link_info *info ATTRIBUTE_UNUSED)
1248 {
1249 return 0;
1250 }
1251
1252 /* Make an empty symbol. This is required only because
1253 bfd_make_section_anyway wants to create a symbol for the section. */
1254
1255 asymbol *
1256 bfd_mach_o_make_empty_symbol (bfd *abfd)
1257 {
1258 asymbol *new_symbol;
1259
1260 new_symbol = bfd_zalloc (abfd, sizeof (bfd_mach_o_asymbol));
1261 if (new_symbol == NULL)
1262 return new_symbol;
1263 new_symbol->the_bfd = abfd;
1264 new_symbol->udata.i = 0;
1265 return new_symbol;
1266 }
1267
1268 static bfd_boolean
1269 bfd_mach_o_read_header (bfd *abfd, bfd_mach_o_header *header)
1270 {
1271 unsigned char buf[32];
1272 unsigned int size;
1273 bfd_vma (*get32) (const void *) = NULL;
1274
1275 /* Just read the magic number. */
1276 if (bfd_seek (abfd, 0, SEEK_SET) != 0
1277 || bfd_bread ((PTR) buf, 4, abfd) != 4)
1278 return FALSE;
1279
1280 if (bfd_getb32 (buf) == BFD_MACH_O_MH_MAGIC)
1281 {
1282 header->byteorder = BFD_ENDIAN_BIG;
1283 header->magic = BFD_MACH_O_MH_MAGIC;
1284 header->version = 1;
1285 get32 = bfd_getb32;
1286 }
1287 else if (bfd_getl32 (buf) == BFD_MACH_O_MH_MAGIC)
1288 {
1289 header->byteorder = BFD_ENDIAN_LITTLE;
1290 header->magic = BFD_MACH_O_MH_MAGIC;
1291 header->version = 1;
1292 get32 = bfd_getl32;
1293 }
1294 else if (bfd_getb32 (buf) == BFD_MACH_O_MH_MAGIC_64)
1295 {
1296 header->byteorder = BFD_ENDIAN_BIG;
1297 header->magic = BFD_MACH_O_MH_MAGIC_64;
1298 header->version = 2;
1299 get32 = bfd_getb32;
1300 }
1301 else if (bfd_getl32 (buf) == BFD_MACH_O_MH_MAGIC_64)
1302 {
1303 header->byteorder = BFD_ENDIAN_LITTLE;
1304 header->magic = BFD_MACH_O_MH_MAGIC_64;
1305 header->version = 2;
1306 get32 = bfd_getl32;
1307 }
1308 else
1309 {
1310 header->byteorder = BFD_ENDIAN_UNKNOWN;
1311 return FALSE;
1312 }
1313
1314 /* Once the size of the header is known, read the full header. */
1315 size = mach_o_wide_p (header) ?
1316 BFD_MACH_O_HEADER_64_SIZE : BFD_MACH_O_HEADER_SIZE;
1317
1318 if (bfd_seek (abfd, 0, SEEK_SET) != 0
1319 || bfd_bread ((PTR) buf, size, abfd) != size)
1320 return FALSE;
1321
1322 header->cputype = (*get32) (buf + 4);
1323 header->cpusubtype = (*get32) (buf + 8);
1324 header->filetype = (*get32) (buf + 12);
1325 header->ncmds = (*get32) (buf + 16);
1326 header->sizeofcmds = (*get32) (buf + 20);
1327 header->flags = (*get32) (buf + 24);
1328
1329 if (mach_o_wide_p (header))
1330 header->reserved = (*get32) (buf + 28);
1331
1332 return TRUE;
1333 }
1334
1335 static asection *
1336 bfd_mach_o_make_bfd_section (bfd *abfd, bfd_mach_o_section *section,
1337 unsigned long prot)
1338 {
1339 asection *bfdsec;
1340 char *sname;
1341 flagword flags;
1342
1343 sname = bfd_mach_o_convert_section_name_to_bfd (abfd, section);
1344 if (sname == NULL)
1345 return NULL;
1346
1347 if (section->flags & BFD_MACH_O_S_ATTR_DEBUG)
1348 flags = SEC_HAS_CONTENTS | SEC_DEBUGGING;
1349 else
1350 {
1351 flags = SEC_ALLOC;
1352 if ((section->flags & BFD_MACH_O_SECTION_TYPE_MASK)
1353 != BFD_MACH_O_S_ZEROFILL)
1354 {
1355 flags |= SEC_HAS_CONTENTS | SEC_LOAD;
1356 if (prot & BFD_MACH_O_PROT_EXECUTE)
1357 flags |= SEC_CODE;
1358 if (prot & BFD_MACH_O_PROT_WRITE)
1359 flags |= SEC_DATA;
1360 else if (prot & BFD_MACH_O_PROT_READ)
1361 flags |= SEC_READONLY;
1362 }
1363 }
1364 if (section->nreloc != 0)
1365 flags |= SEC_RELOC;
1366
1367 bfdsec = bfd_make_section_anyway_with_flags (abfd, sname, flags);
1368 if (bfdsec == NULL)
1369 return NULL;
1370
1371 bfdsec->vma = section->addr;
1372 bfdsec->lma = section->addr;
1373 bfdsec->size = section->size;
1374 bfdsec->filepos = section->offset;
1375 bfdsec->alignment_power = section->align;
1376 bfdsec->segment_mark = 0;
1377 bfdsec->reloc_count = section->nreloc;
1378 bfdsec->rel_filepos = section->reloff;
1379
1380 return bfdsec;
1381 }
1382
1383 static int
1384 bfd_mach_o_scan_read_section_32 (bfd *abfd,
1385 bfd_mach_o_section *section,
1386 unsigned int offset,
1387 unsigned long prot)
1388 {
1389 unsigned char buf[BFD_MACH_O_SECTION_SIZE];
1390
1391 if (bfd_seek (abfd, offset, SEEK_SET) != 0
1392 || (bfd_bread ((PTR) buf, BFD_MACH_O_SECTION_SIZE, abfd)
1393 != BFD_MACH_O_SECTION_SIZE))
1394 return -1;
1395
1396 memcpy (section->sectname, buf, 16);
1397 section->sectname[16] = '\0';
1398 memcpy (section->segname, buf + 16, 16);
1399 section->segname[16] = '\0';
1400 section->addr = bfd_h_get_32 (abfd, buf + 32);
1401 section->size = bfd_h_get_32 (abfd, buf + 36);
1402 section->offset = bfd_h_get_32 (abfd, buf + 40);
1403 section->align = bfd_h_get_32 (abfd, buf + 44);
1404 section->reloff = bfd_h_get_32 (abfd, buf + 48);
1405 section->nreloc = bfd_h_get_32 (abfd, buf + 52);
1406 section->flags = bfd_h_get_32 (abfd, buf + 56);
1407 section->reserved1 = bfd_h_get_32 (abfd, buf + 60);
1408 section->reserved2 = bfd_h_get_32 (abfd, buf + 64);
1409 section->reserved3 = 0;
1410 section->bfdsection = bfd_mach_o_make_bfd_section (abfd, section, prot);
1411
1412 if (section->bfdsection == NULL)
1413 return -1;
1414
1415 return 0;
1416 }
1417
1418 static int
1419 bfd_mach_o_scan_read_section_64 (bfd *abfd,
1420 bfd_mach_o_section *section,
1421 unsigned int offset,
1422 unsigned long prot)
1423 {
1424 unsigned char buf[BFD_MACH_O_SECTION_64_SIZE];
1425
1426 if (bfd_seek (abfd, offset, SEEK_SET) != 0
1427 || (bfd_bread ((PTR) buf, BFD_MACH_O_SECTION_64_SIZE, abfd)
1428 != BFD_MACH_O_SECTION_64_SIZE))
1429 return -1;
1430
1431 memcpy (section->sectname, buf, 16);
1432 section->sectname[16] = '\0';
1433 memcpy (section->segname, buf + 16, 16);
1434 section->segname[16] = '\0';
1435 section->addr = bfd_h_get_64 (abfd, buf + 32);
1436 section->size = bfd_h_get_64 (abfd, buf + 40);
1437 section->offset = bfd_h_get_32 (abfd, buf + 48);
1438 section->align = bfd_h_get_32 (abfd, buf + 52);
1439 section->reloff = bfd_h_get_32 (abfd, buf + 56);
1440 section->nreloc = bfd_h_get_32 (abfd, buf + 60);
1441 section->flags = bfd_h_get_32 (abfd, buf + 64);
1442 section->reserved1 = bfd_h_get_32 (abfd, buf + 68);
1443 section->reserved2 = bfd_h_get_32 (abfd, buf + 72);
1444 section->reserved3 = bfd_h_get_32 (abfd, buf + 76);
1445 section->bfdsection = bfd_mach_o_make_bfd_section (abfd, section, prot);
1446
1447 if (section->bfdsection == NULL)
1448 return -1;
1449
1450 return 0;
1451 }
1452
1453 static int
1454 bfd_mach_o_scan_read_section (bfd *abfd,
1455 bfd_mach_o_section *section,
1456 unsigned int offset,
1457 unsigned long prot,
1458 unsigned int wide)
1459 {
1460 if (wide)
1461 return bfd_mach_o_scan_read_section_64 (abfd, section, offset, prot);
1462 else
1463 return bfd_mach_o_scan_read_section_32 (abfd, section, offset, prot);
1464 }
1465
1466 static int
1467 bfd_mach_o_scan_read_symtab_symbol (bfd *abfd,
1468 bfd_mach_o_symtab_command *sym,
1469 bfd_mach_o_asymbol *s,
1470 unsigned long i)
1471 {
1472 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
1473 unsigned int wide = mach_o_wide_p (&mdata->header);
1474 unsigned int symwidth =
1475 wide ? BFD_MACH_O_NLIST_64_SIZE : BFD_MACH_O_NLIST_SIZE;
1476 unsigned int symoff = sym->symoff + (i * symwidth);
1477 unsigned char buf[16];
1478 unsigned char type = -1;
1479 unsigned char section = -1;
1480 short desc = -1;
1481 symvalue value = -1;
1482 unsigned long stroff = -1;
1483 unsigned int symtype = -1;
1484
1485 BFD_ASSERT (sym->strtab != NULL);
1486
1487 if (bfd_seek (abfd, symoff, SEEK_SET) != 0
1488 || bfd_bread ((PTR) buf, symwidth, abfd) != symwidth)
1489 {
1490 fprintf (stderr, "bfd_mach_o_scan_read_symtab_symbol: unable to read %d bytes at %lu\n",
1491 symwidth, (unsigned long) symoff);
1492 return -1;
1493 }
1494
1495 stroff = bfd_h_get_32 (abfd, buf);
1496 type = bfd_h_get_8 (abfd, buf + 4);
1497 symtype = type & BFD_MACH_O_N_TYPE;
1498 section = bfd_h_get_8 (abfd, buf + 5);
1499 desc = bfd_h_get_16 (abfd, buf + 6);
1500 if (wide)
1501 value = bfd_h_get_64 (abfd, buf + 8);
1502 else
1503 value = bfd_h_get_32 (abfd, buf + 8);
1504
1505 if (stroff >= sym->strsize)
1506 {
1507 fprintf (stderr, "bfd_mach_o_scan_read_symtab_symbol: symbol name out of range (%lu >= %lu)\n",
1508 (unsigned long) stroff, (unsigned long) sym->strsize);
1509 return -1;
1510 }
1511
1512 s->symbol.the_bfd = abfd;
1513 s->symbol.name = sym->strtab + stroff;
1514 s->symbol.value = value;
1515 s->symbol.flags = 0x0;
1516 s->symbol.udata.i = 0;
1517 s->n_type = type;
1518 s->n_sect = section;
1519 s->n_desc = desc;
1520
1521 if (type & BFD_MACH_O_N_STAB)
1522 {
1523 s->symbol.flags |= BSF_DEBUGGING;
1524 s->symbol.section = bfd_und_section_ptr;
1525 switch (type)
1526 {
1527 case N_FUN:
1528 case N_STSYM:
1529 case N_LCSYM:
1530 case N_BNSYM:
1531 case N_SLINE:
1532 case N_ENSYM:
1533 case N_ECOMM:
1534 case N_ECOML:
1535 case N_GSYM:
1536 if ((section > 0) && (section <= mdata->nsects))
1537 {
1538 s->symbol.section = mdata->sections[section - 1]->bfdsection;
1539 s->symbol.value =
1540 s->symbol.value - mdata->sections[section - 1]->addr;
1541 }
1542 break;
1543 }
1544 }
1545 else
1546 {
1547 if (type & BFD_MACH_O_N_PEXT)
1548 s->symbol.flags |= BSF_GLOBAL;
1549
1550 if (type & BFD_MACH_O_N_EXT)
1551 s->symbol.flags |= BSF_GLOBAL;
1552
1553 if (!(type & (BFD_MACH_O_N_PEXT | BFD_MACH_O_N_EXT)))
1554 s->symbol.flags |= BSF_LOCAL;
1555
1556 switch (symtype)
1557 {
1558 case BFD_MACH_O_N_UNDF:
1559 if (type == (BFD_MACH_O_N_UNDF | BFD_MACH_O_N_EXT)
1560 && s->symbol.value != 0)
1561 {
1562 /* A common symbol. */
1563 s->symbol.section = bfd_com_section_ptr;
1564 s->symbol.flags = BSF_NO_FLAGS;
1565 }
1566 else
1567 {
1568 s->symbol.section = bfd_und_section_ptr;
1569 if (s->n_desc & BFD_MACH_O_N_WEAK_REF)
1570 s->symbol.flags |= BSF_WEAK;
1571 }
1572 break;
1573 case BFD_MACH_O_N_PBUD:
1574 s->symbol.section = bfd_und_section_ptr;
1575 break;
1576 case BFD_MACH_O_N_ABS:
1577 s->symbol.section = bfd_abs_section_ptr;
1578 break;
1579 case BFD_MACH_O_N_SECT:
1580 if ((section > 0) && (section <= mdata->nsects))
1581 {
1582 s->symbol.section = mdata->sections[section - 1]->bfdsection;
1583 s->symbol.value =
1584 s->symbol.value - mdata->sections[section - 1]->addr;
1585 }
1586 else
1587 {
1588 /* Mach-O uses 0 to mean "no section"; not an error. */
1589 if (section != 0)
1590 {
1591 fprintf (stderr, "bfd_mach_o_scan_read_symtab_symbol: "
1592 "symbol \"%s\" specified invalid section %d (max %lu): setting to undefined\n",
1593 s->symbol.name, section, mdata->nsects);
1594 }
1595 s->symbol.section = bfd_und_section_ptr;
1596 }
1597 break;
1598 case BFD_MACH_O_N_INDR:
1599 fprintf (stderr, "bfd_mach_o_scan_read_symtab_symbol: "
1600 "symbol \"%s\" is unsupported 'indirect' reference: setting to undefined\n",
1601 s->symbol.name);
1602 s->symbol.section = bfd_und_section_ptr;
1603 break;
1604 default:
1605 fprintf (stderr, "bfd_mach_o_scan_read_symtab_symbol: "
1606 "symbol \"%s\" specified invalid type field 0x%x: setting to undefined\n",
1607 s->symbol.name, symtype);
1608 s->symbol.section = bfd_und_section_ptr;
1609 break;
1610 }
1611 }
1612
1613 return 0;
1614 }
1615
1616 static int
1617 bfd_mach_o_scan_read_symtab_strtab (bfd *abfd)
1618 {
1619 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
1620 bfd_mach_o_symtab_command *sym = mdata->symtab;
1621
1622 /* Fail if there is no symtab. */
1623 if (sym == NULL)
1624 return -1;
1625
1626 /* Success if already loaded. */
1627 if (sym->strtab)
1628 return 0;
1629
1630 if (abfd->flags & BFD_IN_MEMORY)
1631 {
1632 struct bfd_in_memory *b;
1633
1634 b = (struct bfd_in_memory *) abfd->iostream;
1635
1636 if ((sym->stroff + sym->strsize) > b->size)
1637 {
1638 bfd_set_error (bfd_error_file_truncated);
1639 return -1;
1640 }
1641 sym->strtab = (char *) b->buffer + sym->stroff;
1642 }
1643 else
1644 {
1645 sym->strtab = bfd_alloc (abfd, sym->strsize);
1646 if (sym->strtab == NULL)
1647 return -1;
1648
1649 if (bfd_seek (abfd, sym->stroff, SEEK_SET) != 0
1650 || bfd_bread ((PTR) sym->strtab, sym->strsize, abfd) != sym->strsize)
1651 {
1652 bfd_set_error (bfd_error_file_truncated);
1653 return -1;
1654 }
1655 }
1656
1657 return 0;
1658 }
1659
1660 static int
1661 bfd_mach_o_scan_read_symtab_symbols (bfd *abfd)
1662 {
1663 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
1664 bfd_mach_o_symtab_command *sym = mdata->symtab;
1665 unsigned long i;
1666 int ret;
1667
1668 if (sym->symbols)
1669 return 0;
1670
1671 sym->symbols = bfd_alloc (abfd, sym->nsyms * sizeof (bfd_mach_o_asymbol));
1672
1673 if (sym->symbols == NULL)
1674 {
1675 fprintf (stderr, "bfd_mach_o_scan_read_symtab_symbols: unable to allocate memory for symbols\n");
1676 return -1;
1677 }
1678
1679 ret = bfd_mach_o_scan_read_symtab_strtab (abfd);
1680 if (ret != 0)
1681 return ret;
1682
1683 for (i = 0; i < sym->nsyms; i++)
1684 {
1685 ret = bfd_mach_o_scan_read_symtab_symbol (abfd, sym, &sym->symbols[i], i);
1686 if (ret != 0)
1687 return ret;
1688 }
1689
1690 return 0;
1691 }
1692
1693 int
1694 bfd_mach_o_scan_read_dysymtab_symbol (bfd *abfd,
1695 bfd_mach_o_dysymtab_command *dysym,
1696 bfd_mach_o_symtab_command *sym,
1697 bfd_mach_o_asymbol *s,
1698 unsigned long i)
1699 {
1700 unsigned long isymoff = dysym->indirectsymoff + (i * 4);
1701 unsigned long symindex;
1702 unsigned char buf[4];
1703
1704 BFD_ASSERT (i < dysym->nindirectsyms);
1705
1706 if (bfd_seek (abfd, isymoff, SEEK_SET) != 0
1707 || bfd_bread ((PTR) buf, 4, abfd) != 4)
1708 {
1709 fprintf (stderr, "bfd_mach_o_scan_read_dysymtab_symbol: unable to read %lu bytes at %lu\n",
1710 (unsigned long) 4, isymoff);
1711 return -1;
1712 }
1713 symindex = bfd_h_get_32 (abfd, buf);
1714
1715 return bfd_mach_o_scan_read_symtab_symbol (abfd, sym, s, symindex);
1716 }
1717
1718 static const char *
1719 bfd_mach_o_i386_flavour_string (unsigned int flavour)
1720 {
1721 switch ((int) flavour)
1722 {
1723 case BFD_MACH_O_x86_THREAD_STATE32: return "x86_THREAD_STATE32";
1724 case BFD_MACH_O_x86_FLOAT_STATE32: return "x86_FLOAT_STATE32";
1725 case BFD_MACH_O_x86_EXCEPTION_STATE32: return "x86_EXCEPTION_STATE32";
1726 case BFD_MACH_O_x86_THREAD_STATE64: return "x86_THREAD_STATE64";
1727 case BFD_MACH_O_x86_FLOAT_STATE64: return "x86_FLOAT_STATE64";
1728 case BFD_MACH_O_x86_EXCEPTION_STATE64: return "x86_EXCEPTION_STATE64";
1729 case BFD_MACH_O_x86_THREAD_STATE: return "x86_THREAD_STATE";
1730 case BFD_MACH_O_x86_FLOAT_STATE: return "x86_FLOAT_STATE";
1731 case BFD_MACH_O_x86_EXCEPTION_STATE: return "x86_EXCEPTION_STATE";
1732 case BFD_MACH_O_x86_DEBUG_STATE32: return "x86_DEBUG_STATE32";
1733 case BFD_MACH_O_x86_DEBUG_STATE64: return "x86_DEBUG_STATE64";
1734 case BFD_MACH_O_x86_DEBUG_STATE: return "x86_DEBUG_STATE";
1735 case BFD_MACH_O_x86_THREAD_STATE_NONE: return "x86_THREAD_STATE_NONE";
1736 default: return "UNKNOWN";
1737 }
1738 }
1739
1740 static const char *
1741 bfd_mach_o_ppc_flavour_string (unsigned int flavour)
1742 {
1743 switch ((int) flavour)
1744 {
1745 case BFD_MACH_O_PPC_THREAD_STATE: return "PPC_THREAD_STATE";
1746 case BFD_MACH_O_PPC_FLOAT_STATE: return "PPC_FLOAT_STATE";
1747 case BFD_MACH_O_PPC_EXCEPTION_STATE: return "PPC_EXCEPTION_STATE";
1748 case BFD_MACH_O_PPC_VECTOR_STATE: return "PPC_VECTOR_STATE";
1749 case BFD_MACH_O_PPC_THREAD_STATE64: return "PPC_THREAD_STATE64";
1750 case BFD_MACH_O_PPC_EXCEPTION_STATE64: return "PPC_EXCEPTION_STATE64";
1751 default: return "UNKNOWN";
1752 }
1753 }
1754
1755 static int
1756 bfd_mach_o_scan_read_dylinker (bfd *abfd,
1757 bfd_mach_o_load_command *command)
1758 {
1759 bfd_mach_o_dylinker_command *cmd = &command->command.dylinker;
1760 unsigned char buf[4];
1761 unsigned int nameoff;
1762
1763 BFD_ASSERT ((command->type == BFD_MACH_O_LC_ID_DYLINKER)
1764 || (command->type == BFD_MACH_O_LC_LOAD_DYLINKER));
1765
1766 if (bfd_seek (abfd, command->offset + 8, SEEK_SET) != 0
1767 || bfd_bread ((PTR) buf, 4, abfd) != 4)
1768 return -1;
1769
1770 nameoff = bfd_h_get_32 (abfd, buf + 0);
1771
1772 cmd->name_offset = command->offset + nameoff;
1773 cmd->name_len = command->len - nameoff;
1774 cmd->name_str = bfd_alloc (abfd, cmd->name_len);
1775 if (cmd->name_str == NULL)
1776 return -1;
1777 if (bfd_seek (abfd, cmd->name_offset, SEEK_SET) != 0
1778 || bfd_bread (cmd->name_str, cmd->name_len, abfd) != cmd->name_len)
1779 return -1;
1780 return 0;
1781 }
1782
1783 static int
1784 bfd_mach_o_scan_read_dylib (bfd *abfd, bfd_mach_o_load_command *command)
1785 {
1786 bfd_mach_o_dylib_command *cmd = &command->command.dylib;
1787 unsigned char buf[16];
1788 unsigned int nameoff;
1789
1790 switch (command->type)
1791 {
1792 case BFD_MACH_O_LC_LOAD_DYLIB:
1793 case BFD_MACH_O_LC_LOAD_WEAK_DYLIB:
1794 case BFD_MACH_O_LC_ID_DYLIB:
1795 case BFD_MACH_O_LC_REEXPORT_DYLIB:
1796 break;
1797 default:
1798 BFD_FAIL ();
1799 return -1;
1800 }
1801
1802 if (bfd_seek (abfd, command->offset + 8, SEEK_SET) != 0
1803 || bfd_bread ((PTR) buf, 16, abfd) != 16)
1804 return -1;
1805
1806 nameoff = bfd_h_get_32 (abfd, buf + 0);
1807 cmd->timestamp = bfd_h_get_32 (abfd, buf + 4);
1808 cmd->current_version = bfd_h_get_32 (abfd, buf + 8);
1809 cmd->compatibility_version = bfd_h_get_32 (abfd, buf + 12);
1810
1811 cmd->name_offset = command->offset + nameoff;
1812 cmd->name_len = command->len - nameoff;
1813 cmd->name_str = bfd_alloc (abfd, cmd->name_len);
1814 if (cmd->name_str == NULL)
1815 return -1;
1816 if (bfd_seek (abfd, cmd->name_offset, SEEK_SET) != 0
1817 || bfd_bread (cmd->name_str, cmd->name_len, abfd) != cmd->name_len)
1818 return -1;
1819 return 0;
1820 }
1821
1822 static int
1823 bfd_mach_o_scan_read_prebound_dylib (bfd *abfd ATTRIBUTE_UNUSED,
1824 bfd_mach_o_load_command *command ATTRIBUTE_UNUSED)
1825 {
1826 /* bfd_mach_o_prebound_dylib_command *cmd = &command->command.prebound_dylib; */
1827
1828 BFD_ASSERT (command->type == BFD_MACH_O_LC_PREBOUND_DYLIB);
1829 return 0;
1830 }
1831
1832 static int
1833 bfd_mach_o_scan_read_thread (bfd *abfd, bfd_mach_o_load_command *command)
1834 {
1835 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
1836 bfd_mach_o_thread_command *cmd = &command->command.thread;
1837 unsigned char buf[8];
1838 unsigned int offset;
1839 unsigned int nflavours;
1840 unsigned int i;
1841
1842 BFD_ASSERT ((command->type == BFD_MACH_O_LC_THREAD)
1843 || (command->type == BFD_MACH_O_LC_UNIXTHREAD));
1844
1845 /* Count the number of threads. */
1846 offset = 8;
1847 nflavours = 0;
1848 while (offset != command->len)
1849 {
1850 if (offset >= command->len)
1851 return -1;
1852
1853 if (bfd_seek (abfd, command->offset + offset, SEEK_SET) != 0
1854 || bfd_bread ((PTR) buf, 8, abfd) != 8)
1855 return -1;
1856
1857 offset += 8 + bfd_h_get_32 (abfd, buf + 4) * 4;
1858 nflavours++;
1859 }
1860
1861 /* Allocate threads. */
1862 cmd->flavours = bfd_alloc
1863 (abfd, nflavours * sizeof (bfd_mach_o_thread_flavour));
1864 if (cmd->flavours == NULL)
1865 return -1;
1866 cmd->nflavours = nflavours;
1867
1868 offset = 8;
1869 nflavours = 0;
1870 while (offset != command->len)
1871 {
1872 if (offset >= command->len)
1873 return -1;
1874
1875 if (nflavours >= cmd->nflavours)
1876 return -1;
1877
1878 if (bfd_seek (abfd, command->offset + offset, SEEK_SET) != 0
1879 || bfd_bread ((PTR) buf, 8, abfd) != 8)
1880 return -1;
1881
1882 cmd->flavours[nflavours].flavour = bfd_h_get_32 (abfd, buf);
1883 cmd->flavours[nflavours].offset = command->offset + offset + 8;
1884 cmd->flavours[nflavours].size = bfd_h_get_32 (abfd, buf + 4) * 4;
1885 offset += cmd->flavours[nflavours].size + 8;
1886 nflavours++;
1887 }
1888
1889 for (i = 0; i < nflavours; i++)
1890 {
1891 asection *bfdsec;
1892 unsigned int snamelen;
1893 char *sname;
1894 const char *flavourstr;
1895 const char *prefix = "LC_THREAD";
1896 unsigned int j = 0;
1897
1898 switch (mdata->header.cputype)
1899 {
1900 case BFD_MACH_O_CPU_TYPE_POWERPC:
1901 case BFD_MACH_O_CPU_TYPE_POWERPC_64:
1902 flavourstr = bfd_mach_o_ppc_flavour_string (cmd->flavours[i].flavour);
1903 break;
1904 case BFD_MACH_O_CPU_TYPE_I386:
1905 case BFD_MACH_O_CPU_TYPE_X86_64:
1906 flavourstr = bfd_mach_o_i386_flavour_string (cmd->flavours[i].flavour);
1907 break;
1908 default:
1909 flavourstr = "UNKNOWN_ARCHITECTURE";
1910 break;
1911 }
1912
1913 snamelen = strlen (prefix) + 1 + 20 + 1 + strlen (flavourstr) + 1;
1914 sname = bfd_alloc (abfd, snamelen);
1915 if (sname == NULL)
1916 return -1;
1917
1918 for (;;)
1919 {
1920 sprintf (sname, "%s.%s.%u", prefix, flavourstr, j);
1921 if (bfd_get_section_by_name (abfd, sname) == NULL)
1922 break;
1923 j++;
1924 }
1925
1926 bfdsec = bfd_make_section_with_flags (abfd, sname, SEC_HAS_CONTENTS);
1927
1928 bfdsec->vma = 0;
1929 bfdsec->lma = 0;
1930 bfdsec->size = cmd->flavours[i].size;
1931 bfdsec->filepos = cmd->flavours[i].offset;
1932 bfdsec->alignment_power = 0x0;
1933
1934 cmd->section = bfdsec;
1935 }
1936
1937 return 0;
1938 }
1939
1940 static int
1941 bfd_mach_o_scan_read_dysymtab (bfd *abfd, bfd_mach_o_load_command *command)
1942 {
1943 bfd_mach_o_dysymtab_command *cmd = &command->command.dysymtab;
1944 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
1945 unsigned char buf[72];
1946
1947 BFD_ASSERT (command->type == BFD_MACH_O_LC_DYSYMTAB);
1948
1949 if (bfd_seek (abfd, command->offset + 8, SEEK_SET) != 0
1950 || bfd_bread ((PTR) buf, 72, abfd) != 72)
1951 return -1;
1952
1953 cmd->ilocalsym = bfd_h_get_32 (abfd, buf + 0);
1954 cmd->nlocalsym = bfd_h_get_32 (abfd, buf + 4);
1955 cmd->iextdefsym = bfd_h_get_32 (abfd, buf + 8);
1956 cmd->nextdefsym = bfd_h_get_32 (abfd, buf + 12);
1957 cmd->iundefsym = bfd_h_get_32 (abfd, buf + 16);
1958 cmd->nundefsym = bfd_h_get_32 (abfd, buf + 20);
1959 cmd->tocoff = bfd_h_get_32 (abfd, buf + 24);
1960 cmd->ntoc = bfd_h_get_32 (abfd, buf + 28);
1961 cmd->modtaboff = bfd_h_get_32 (abfd, buf + 32);
1962 cmd->nmodtab = bfd_h_get_32 (abfd, buf + 36);
1963 cmd->extrefsymoff = bfd_h_get_32 (abfd, buf + 40);
1964 cmd->nextrefsyms = bfd_h_get_32 (abfd, buf + 44);
1965 cmd->indirectsymoff = bfd_h_get_32 (abfd, buf + 48);
1966 cmd->nindirectsyms = bfd_h_get_32 (abfd, buf + 52);
1967 cmd->extreloff = bfd_h_get_32 (abfd, buf + 56);
1968 cmd->nextrel = bfd_h_get_32 (abfd, buf + 60);
1969 cmd->locreloff = bfd_h_get_32 (abfd, buf + 64);
1970 cmd->nlocrel = bfd_h_get_32 (abfd, buf + 68);
1971
1972 if (cmd->nmodtab != 0)
1973 {
1974 char buf[56];
1975 unsigned int i;
1976 int wide = bfd_mach_o_wide_p (abfd);
1977 unsigned int module_len = wide ? 56 : 52;
1978
1979 cmd->dylib_module =
1980 bfd_alloc (abfd, cmd->nmodtab * sizeof (bfd_mach_o_dylib_module));
1981 if (cmd->dylib_module == NULL)
1982 return -1;
1983
1984 if (bfd_seek (abfd, cmd->modtaboff, SEEK_SET) != 0)
1985 return -1;
1986
1987 for (i = 0; i < cmd->nmodtab; i++)
1988 {
1989 bfd_mach_o_dylib_module *module = &cmd->dylib_module[i];
1990 unsigned long v;
1991
1992 if (bfd_bread ((PTR) buf, module_len, abfd) != module_len)
1993 return -1;
1994
1995 module->module_name_idx = bfd_h_get_32 (abfd, buf + 0);
1996 module->iextdefsym = bfd_h_get_32 (abfd, buf + 4);
1997 module->nextdefsym = bfd_h_get_32 (abfd, buf + 8);
1998 module->irefsym = bfd_h_get_32 (abfd, buf + 12);
1999 module->nrefsym = bfd_h_get_32 (abfd, buf + 16);
2000 module->ilocalsym = bfd_h_get_32 (abfd, buf + 20);
2001 module->nlocalsym = bfd_h_get_32 (abfd, buf + 24);
2002 module->iextrel = bfd_h_get_32 (abfd, buf + 28);
2003 module->nextrel = bfd_h_get_32 (abfd, buf + 32);
2004 v = bfd_h_get_32 (abfd, buf +36);
2005 module->iinit = v & 0xffff;
2006 module->iterm = (v >> 16) & 0xffff;
2007 v = bfd_h_get_32 (abfd, buf + 40);
2008 module->ninit = v & 0xffff;
2009 module->nterm = (v >> 16) & 0xffff;
2010 if (wide)
2011 {
2012 module->objc_module_info_size = bfd_h_get_32 (abfd, buf + 44);
2013 module->objc_module_info_addr = bfd_h_get_64 (abfd, buf + 48);
2014 }
2015 else
2016 {
2017 module->objc_module_info_addr = bfd_h_get_32 (abfd, buf + 44);
2018 module->objc_module_info_size = bfd_h_get_32 (abfd, buf + 48);
2019 }
2020 }
2021 }
2022
2023 if (cmd->ntoc != 0)
2024 {
2025 char buf[8];
2026 unsigned int i;
2027
2028 cmd->dylib_toc = bfd_alloc
2029 (abfd, cmd->ntoc * sizeof (bfd_mach_o_dylib_table_of_content));
2030 if (cmd->dylib_toc == NULL)
2031 return -1;
2032
2033 if (bfd_seek (abfd, cmd->tocoff, SEEK_SET) != 0)
2034 return -1;
2035
2036 for (i = 0; i < cmd->ntoc; i++)
2037 {
2038 bfd_mach_o_dylib_table_of_content *toc = &cmd->dylib_toc[i];
2039
2040 if (bfd_bread ((PTR) buf, 8, abfd) != 8)
2041 return -1;
2042
2043 toc->symbol_index = bfd_h_get_32 (abfd, buf + 0);
2044 toc->module_index = bfd_h_get_32 (abfd, buf + 4);
2045 }
2046 }
2047
2048 if (cmd->nindirectsyms != 0)
2049 {
2050 char buf[4];
2051 unsigned int i;
2052
2053 cmd->indirect_syms = bfd_alloc
2054 (abfd, cmd->nindirectsyms * sizeof (unsigned int));
2055 if (cmd->indirect_syms == NULL)
2056 return -1;
2057
2058 if (bfd_seek (abfd, cmd->indirectsymoff, SEEK_SET) != 0)
2059 return -1;
2060
2061 for (i = 0; i < cmd->nindirectsyms; i++)
2062 {
2063 unsigned int *is = &cmd->indirect_syms[i];
2064
2065 if (bfd_bread ((PTR) buf, 4, abfd) != 4)
2066 return -1;
2067
2068 *is = bfd_h_get_32 (abfd, buf + 0);
2069 }
2070 }
2071
2072 if (cmd->nextrefsyms != 0)
2073 {
2074 char buf[4];
2075 unsigned long v;
2076 unsigned int i;
2077
2078 cmd->ext_refs = bfd_alloc
2079 (abfd, cmd->nextrefsyms * sizeof (bfd_mach_o_dylib_reference));
2080 if (cmd->ext_refs == NULL)
2081 return -1;
2082
2083 if (bfd_seek (abfd, cmd->extrefsymoff, SEEK_SET) != 0)
2084 return -1;
2085
2086 for (i = 0; i < cmd->nextrefsyms; i++)
2087 {
2088 bfd_mach_o_dylib_reference *ref = &cmd->ext_refs[i];
2089
2090 if (bfd_bread ((PTR) buf, 4, abfd) != 4)
2091 return -1;
2092
2093 /* Fields isym and flags are written as bit-fields, thus we need
2094 a specific processing for endianness. */
2095 v = bfd_h_get_32 (abfd, buf + 0);
2096 if (bfd_big_endian (abfd))
2097 {
2098 ref->isym = (v >> 8) & 0xffffff;
2099 ref->flags = v & 0xff;
2100 }
2101 else
2102 {
2103 ref->isym = v & 0xffffff;
2104 ref->flags = (v >> 24) & 0xff;
2105 }
2106 }
2107 }
2108
2109 if (mdata->dysymtab)
2110 return -1;
2111 mdata->dysymtab = cmd;
2112
2113 return 0;
2114 }
2115
2116 static int
2117 bfd_mach_o_scan_read_symtab (bfd *abfd, bfd_mach_o_load_command *command)
2118 {
2119 bfd_mach_o_symtab_command *symtab = &command->command.symtab;
2120 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
2121 unsigned char buf[16];
2122
2123 BFD_ASSERT (command->type == BFD_MACH_O_LC_SYMTAB);
2124
2125 if (bfd_seek (abfd, command->offset + 8, SEEK_SET) != 0
2126 || bfd_bread ((PTR) buf, 16, abfd) != 16)
2127 return -1;
2128
2129 symtab->symoff = bfd_h_get_32 (abfd, buf);
2130 symtab->nsyms = bfd_h_get_32 (abfd, buf + 4);
2131 symtab->stroff = bfd_h_get_32 (abfd, buf + 8);
2132 symtab->strsize = bfd_h_get_32 (abfd, buf + 12);
2133 symtab->symbols = NULL;
2134 symtab->strtab = NULL;
2135
2136 if (symtab->nsyms != 0)
2137 abfd->flags |= HAS_SYMS;
2138
2139 if (mdata->symtab)
2140 return -1;
2141 mdata->symtab = symtab;
2142 return 0;
2143 }
2144
2145 static int
2146 bfd_mach_o_scan_read_uuid (bfd *abfd, bfd_mach_o_load_command *command)
2147 {
2148 bfd_mach_o_uuid_command *cmd = &command->command.uuid;
2149 asection *bfdsec;
2150 char *sname;
2151 static const char prefix[] = "LC_UUID";
2152
2153 BFD_ASSERT (command->type == BFD_MACH_O_LC_UUID);
2154
2155 if (bfd_seek (abfd, command->offset + 8, SEEK_SET) != 0
2156 || bfd_bread ((PTR) cmd->uuid, 16, abfd) != 16)
2157 return -1;
2158
2159 sname = bfd_alloc (abfd, strlen (prefix) + 1);
2160 if (sname == NULL)
2161 return -1;
2162 strcpy (sname, prefix);
2163
2164 bfdsec = bfd_make_section_anyway_with_flags (abfd, sname, SEC_HAS_CONTENTS);
2165 if (bfdsec == NULL)
2166 return -1;
2167
2168 bfdsec->vma = 0;
2169 bfdsec->lma = 0;
2170 bfdsec->size = command->len - 8;
2171 bfdsec->filepos = command->offset + 8;
2172 bfdsec->alignment_power = 0;
2173
2174 cmd->section = bfdsec;
2175
2176 return 0;
2177 }
2178
2179 static int
2180 bfd_mach_o_scan_read_linkedit (bfd *abfd, bfd_mach_o_load_command *command)
2181 {
2182 bfd_mach_o_linkedit_command *cmd = &command->command.linkedit;
2183 char buf[8];
2184
2185 if (bfd_seek (abfd, command->offset + 8, SEEK_SET) != 0
2186 || bfd_bread ((PTR) buf, 8, abfd) != 8)
2187 return -1;
2188
2189 cmd->dataoff = bfd_get_32 (abfd, buf + 0);
2190 cmd->datasize = bfd_get_32 (abfd, buf + 4);
2191 return 0;
2192 }
2193
2194 static int
2195 bfd_mach_o_scan_read_str (bfd *abfd, bfd_mach_o_load_command *command)
2196 {
2197 bfd_mach_o_str_command *cmd = &command->command.str;
2198 char buf[4];
2199 unsigned long off;
2200
2201 if (bfd_seek (abfd, command->offset + 8, SEEK_SET) != 0
2202 || bfd_bread ((PTR) buf, 4, abfd) != 4)
2203 return -1;
2204
2205 off = bfd_get_32 (abfd, buf + 0);
2206 cmd->stroff = command->offset + off;
2207 cmd->str_len = command->len - off;
2208 cmd->str = bfd_alloc (abfd, cmd->str_len);
2209 if (cmd->str == NULL)
2210 return -1;
2211 if (bfd_seek (abfd, cmd->stroff, SEEK_SET) != 0
2212 || bfd_bread ((PTR) cmd->str, cmd->str_len, abfd) != cmd->str_len)
2213 return -1;
2214 return 0;
2215 }
2216
2217 static int
2218 bfd_mach_o_scan_read_dyld_info (bfd *abfd, bfd_mach_o_load_command *command)
2219 {
2220 bfd_mach_o_dyld_info_command *cmd = &command->command.dyld_info;
2221 char buf[40];
2222
2223 if (bfd_seek (abfd, command->offset + 8, SEEK_SET) != 0
2224 || bfd_bread ((PTR) buf, sizeof (buf), abfd) != sizeof (buf))
2225 return -1;
2226
2227 cmd->rebase_off = bfd_get_32 (abfd, buf + 0);
2228 cmd->rebase_size = bfd_get_32 (abfd, buf + 4);
2229 cmd->bind_off = bfd_get_32 (abfd, buf + 8);
2230 cmd->bind_size = bfd_get_32 (abfd, buf + 12);
2231 cmd->weak_bind_off = bfd_get_32 (abfd, buf + 16);
2232 cmd->weak_bind_size = bfd_get_32 (abfd, buf + 20);
2233 cmd->lazy_bind_off = bfd_get_32 (abfd, buf + 24);
2234 cmd->lazy_bind_size = bfd_get_32 (abfd, buf + 28);
2235 cmd->export_off = bfd_get_32 (abfd, buf + 32);
2236 cmd->export_size = bfd_get_32 (abfd, buf + 36);
2237 return 0;
2238 }
2239
2240 static int
2241 bfd_mach_o_scan_read_segment (bfd *abfd,
2242 bfd_mach_o_load_command *command,
2243 unsigned int wide)
2244 {
2245 unsigned char buf[64];
2246 bfd_mach_o_segment_command *seg = &command->command.segment;
2247 unsigned long i;
2248
2249 if (wide)
2250 {
2251 BFD_ASSERT (command->type == BFD_MACH_O_LC_SEGMENT_64);
2252
2253 if (bfd_seek (abfd, command->offset + 8, SEEK_SET) != 0
2254 || bfd_bread ((PTR) buf, 64, abfd) != 64)
2255 return -1;
2256
2257 memcpy (seg->segname, buf, 16);
2258 seg->segname[16] = '\0';
2259
2260 seg->vmaddr = bfd_h_get_64 (abfd, buf + 16);
2261 seg->vmsize = bfd_h_get_64 (abfd, buf + 24);
2262 seg->fileoff = bfd_h_get_64 (abfd, buf + 32);
2263 seg->filesize = bfd_h_get_64 (abfd, buf + 40);
2264 seg->maxprot = bfd_h_get_32 (abfd, buf + 48);
2265 seg->initprot = bfd_h_get_32 (abfd, buf + 52);
2266 seg->nsects = bfd_h_get_32 (abfd, buf + 56);
2267 seg->flags = bfd_h_get_32 (abfd, buf + 60);
2268 }
2269 else
2270 {
2271 BFD_ASSERT (command->type == BFD_MACH_O_LC_SEGMENT);
2272
2273 if (bfd_seek (abfd, command->offset + 8, SEEK_SET) != 0
2274 || bfd_bread ((PTR) buf, 48, abfd) != 48)
2275 return -1;
2276
2277 memcpy (seg->segname, buf, 16);
2278 seg->segname[16] = '\0';
2279
2280 seg->vmaddr = bfd_h_get_32 (abfd, buf + 16);
2281 seg->vmsize = bfd_h_get_32 (abfd, buf + 20);
2282 seg->fileoff = bfd_h_get_32 (abfd, buf + 24);
2283 seg->filesize = bfd_h_get_32 (abfd, buf + 28);
2284 seg->maxprot = bfd_h_get_32 (abfd, buf + 32);
2285 seg->initprot = bfd_h_get_32 (abfd, buf + 36);
2286 seg->nsects = bfd_h_get_32 (abfd, buf + 40);
2287 seg->flags = bfd_h_get_32 (abfd, buf + 44);
2288 }
2289
2290 if (seg->nsects != 0)
2291 {
2292 seg->sections = bfd_alloc (abfd, seg->nsects
2293 * sizeof (bfd_mach_o_section));
2294 if (seg->sections == NULL)
2295 return -1;
2296
2297 for (i = 0; i < seg->nsects; i++)
2298 {
2299 bfd_vma segoff;
2300 if (wide)
2301 segoff = command->offset + BFD_MACH_O_LC_SEGMENT_64_SIZE
2302 + (i * BFD_MACH_O_SECTION_64_SIZE);
2303 else
2304 segoff = command->offset + BFD_MACH_O_LC_SEGMENT_SIZE
2305 + (i * BFD_MACH_O_SECTION_SIZE);
2306
2307 if (bfd_mach_o_scan_read_section
2308 (abfd, &seg->sections[i], segoff, seg->initprot, wide) != 0)
2309 return -1;
2310 }
2311 }
2312
2313 return 0;
2314 }
2315
2316 static int
2317 bfd_mach_o_scan_read_segment_32 (bfd *abfd, bfd_mach_o_load_command *command)
2318 {
2319 return bfd_mach_o_scan_read_segment (abfd, command, 0);
2320 }
2321
2322 static int
2323 bfd_mach_o_scan_read_segment_64 (bfd *abfd, bfd_mach_o_load_command *command)
2324 {
2325 return bfd_mach_o_scan_read_segment (abfd, command, 1);
2326 }
2327
2328 static int
2329 bfd_mach_o_scan_read_command (bfd *abfd, bfd_mach_o_load_command *command)
2330 {
2331 unsigned char buf[8];
2332
2333 /* Read command type and length. */
2334 if (bfd_seek (abfd, command->offset, SEEK_SET) != 0
2335 || bfd_bread ((PTR) buf, 8, abfd) != 8)
2336 return -1;
2337
2338 command->type = bfd_h_get_32 (abfd, buf) & ~BFD_MACH_O_LC_REQ_DYLD;
2339 command->type_required = (bfd_h_get_32 (abfd, buf) & BFD_MACH_O_LC_REQ_DYLD
2340 ? TRUE : FALSE);
2341 command->len = bfd_h_get_32 (abfd, buf + 4);
2342
2343 switch (command->type)
2344 {
2345 case BFD_MACH_O_LC_SEGMENT:
2346 if (bfd_mach_o_scan_read_segment_32 (abfd, command) != 0)
2347 return -1;
2348 break;
2349 case BFD_MACH_O_LC_SEGMENT_64:
2350 if (bfd_mach_o_scan_read_segment_64 (abfd, command) != 0)
2351 return -1;
2352 break;
2353 case BFD_MACH_O_LC_SYMTAB:
2354 if (bfd_mach_o_scan_read_symtab (abfd, command) != 0)
2355 return -1;
2356 break;
2357 case BFD_MACH_O_LC_SYMSEG:
2358 break;
2359 case BFD_MACH_O_LC_THREAD:
2360 case BFD_MACH_O_LC_UNIXTHREAD:
2361 if (bfd_mach_o_scan_read_thread (abfd, command) != 0)
2362 return -1;
2363 break;
2364 case BFD_MACH_O_LC_LOAD_DYLINKER:
2365 case BFD_MACH_O_LC_ID_DYLINKER:
2366 if (bfd_mach_o_scan_read_dylinker (abfd, command) != 0)
2367 return -1;
2368 break;
2369 case BFD_MACH_O_LC_LOAD_DYLIB:
2370 case BFD_MACH_O_LC_ID_DYLIB:
2371 case BFD_MACH_O_LC_LOAD_WEAK_DYLIB:
2372 case BFD_MACH_O_LC_REEXPORT_DYLIB:
2373 if (bfd_mach_o_scan_read_dylib (abfd, command) != 0)
2374 return -1;
2375 break;
2376 case BFD_MACH_O_LC_PREBOUND_DYLIB:
2377 if (bfd_mach_o_scan_read_prebound_dylib (abfd, command) != 0)
2378 return -1;
2379 break;
2380 case BFD_MACH_O_LC_LOADFVMLIB:
2381 case BFD_MACH_O_LC_IDFVMLIB:
2382 case BFD_MACH_O_LC_IDENT:
2383 case BFD_MACH_O_LC_FVMFILE:
2384 case BFD_MACH_O_LC_PREPAGE:
2385 case BFD_MACH_O_LC_ROUTINES:
2386 break;
2387 case BFD_MACH_O_LC_SUB_FRAMEWORK:
2388 case BFD_MACH_O_LC_SUB_UMBRELLA:
2389 case BFD_MACH_O_LC_SUB_LIBRARY:
2390 case BFD_MACH_O_LC_SUB_CLIENT:
2391 if (bfd_mach_o_scan_read_str (abfd, command) != 0)
2392 return -1;
2393 break;
2394 case BFD_MACH_O_LC_DYSYMTAB:
2395 if (bfd_mach_o_scan_read_dysymtab (abfd, command) != 0)
2396 return -1;
2397 break;
2398 case BFD_MACH_O_LC_TWOLEVEL_HINTS:
2399 case BFD_MACH_O_LC_PREBIND_CKSUM:
2400 break;
2401 case BFD_MACH_O_LC_UUID:
2402 if (bfd_mach_o_scan_read_uuid (abfd, command) != 0)
2403 return -1;
2404 break;
2405 case BFD_MACH_O_LC_CODE_SIGNATURE:
2406 case BFD_MACH_O_LC_SEGMENT_SPLIT_INFO:
2407 if (bfd_mach_o_scan_read_linkedit (abfd, command) != 0)
2408 return -1;
2409 break;
2410 case BFD_MACH_O_LC_DYLD_INFO:
2411 if (bfd_mach_o_scan_read_dyld_info (abfd, command) != 0)
2412 return -1;
2413 break;
2414 default:
2415 fprintf (stderr, "unable to read unknown load command 0x%lx\n",
2416 (unsigned long) command->type);
2417 break;
2418 }
2419
2420 return 0;
2421 }
2422
2423 static void
2424 bfd_mach_o_flatten_sections (bfd *abfd)
2425 {
2426 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
2427 long csect = 0;
2428 unsigned long i, j;
2429
2430 /* Count total number of sections. */
2431 mdata->nsects = 0;
2432
2433 for (i = 0; i < mdata->header.ncmds; i++)
2434 {
2435 if (mdata->commands[i].type == BFD_MACH_O_LC_SEGMENT
2436 || mdata->commands[i].type == BFD_MACH_O_LC_SEGMENT_64)
2437 {
2438 bfd_mach_o_segment_command *seg;
2439
2440 seg = &mdata->commands[i].command.segment;
2441 mdata->nsects += seg->nsects;
2442 }
2443 }
2444
2445 /* Allocate sections array. */
2446 mdata->sections = bfd_alloc (abfd,
2447 mdata->nsects * sizeof (bfd_mach_o_section *));
2448
2449 /* Fill the array. */
2450 csect = 0;
2451
2452 for (i = 0; i < mdata->header.ncmds; i++)
2453 {
2454 if (mdata->commands[i].type == BFD_MACH_O_LC_SEGMENT
2455 || mdata->commands[i].type == BFD_MACH_O_LC_SEGMENT_64)
2456 {
2457 bfd_mach_o_segment_command *seg;
2458
2459 seg = &mdata->commands[i].command.segment;
2460 BFD_ASSERT (csect + seg->nsects <= mdata->nsects);
2461
2462 for (j = 0; j < seg->nsects; j++)
2463 mdata->sections[csect++] = &seg->sections[j];
2464 }
2465 }
2466 }
2467
2468 int
2469 bfd_mach_o_scan_start_address (bfd *abfd)
2470 {
2471 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
2472 bfd_mach_o_thread_command *cmd = NULL;
2473 unsigned long i;
2474
2475 for (i = 0; i < mdata->header.ncmds; i++)
2476 {
2477 if ((mdata->commands[i].type == BFD_MACH_O_LC_THREAD) ||
2478 (mdata->commands[i].type == BFD_MACH_O_LC_UNIXTHREAD))
2479 {
2480 if (cmd == NULL)
2481 cmd = &mdata->commands[i].command.thread;
2482 else
2483 return 0;
2484 }
2485 }
2486
2487 if (cmd == NULL)
2488 return 0;
2489
2490 for (i = 0; i < cmd->nflavours; i++)
2491 {
2492 if ((mdata->header.cputype == BFD_MACH_O_CPU_TYPE_I386)
2493 && (cmd->flavours[i].flavour
2494 == (unsigned long) BFD_MACH_O_x86_THREAD_STATE32))
2495 {
2496 unsigned char buf[4];
2497
2498 if (bfd_seek (abfd, cmd->flavours[i].offset + 40, SEEK_SET) != 0
2499 || bfd_bread (buf, 4, abfd) != 4)
2500 return -1;
2501
2502 abfd->start_address = bfd_h_get_32 (abfd, buf);
2503 }
2504 else if ((mdata->header.cputype == BFD_MACH_O_CPU_TYPE_POWERPC)
2505 && (cmd->flavours[i].flavour == BFD_MACH_O_PPC_THREAD_STATE))
2506 {
2507 unsigned char buf[4];
2508
2509 if (bfd_seek (abfd, cmd->flavours[i].offset + 0, SEEK_SET) != 0
2510 || bfd_bread (buf, 4, abfd) != 4)
2511 return -1;
2512
2513 abfd->start_address = bfd_h_get_32 (abfd, buf);
2514 }
2515 else if ((mdata->header.cputype == BFD_MACH_O_CPU_TYPE_POWERPC_64)
2516 && (cmd->flavours[i].flavour == BFD_MACH_O_PPC_THREAD_STATE64))
2517 {
2518 unsigned char buf[8];
2519
2520 if (bfd_seek (abfd, cmd->flavours[i].offset + 0, SEEK_SET) != 0
2521 || bfd_bread (buf, 8, abfd) != 8)
2522 return -1;
2523
2524 abfd->start_address = bfd_h_get_64 (abfd, buf);
2525 }
2526 else if ((mdata->header.cputype == BFD_MACH_O_CPU_TYPE_X86_64)
2527 && (cmd->flavours[i].flavour == BFD_MACH_O_x86_THREAD_STATE64))
2528 {
2529 unsigned char buf[8];
2530
2531 if (bfd_seek (abfd, cmd->flavours[i].offset + (16 * 8), SEEK_SET) != 0
2532 || bfd_bread (buf, 8, abfd) != 8)
2533 return -1;
2534
2535 abfd->start_address = bfd_h_get_64 (abfd, buf);
2536 }
2537 }
2538
2539 return 0;
2540 }
2541
2542 int
2543 bfd_mach_o_scan (bfd *abfd,
2544 bfd_mach_o_header *header,
2545 bfd_mach_o_data_struct *mdata)
2546 {
2547 unsigned int i;
2548 enum bfd_architecture cputype;
2549 unsigned long cpusubtype;
2550 unsigned int hdrsize;
2551
2552 hdrsize = mach_o_wide_p (header) ?
2553 BFD_MACH_O_HEADER_64_SIZE : BFD_MACH_O_HEADER_SIZE;
2554
2555 mdata->header = *header;
2556
2557 abfd->flags = abfd->flags & BFD_IN_MEMORY;
2558 switch (header->filetype)
2559 {
2560 case BFD_MACH_O_MH_OBJECT:
2561 abfd->flags |= HAS_RELOC;
2562 break;
2563 case BFD_MACH_O_MH_EXECUTE:
2564 abfd->flags |= EXEC_P;
2565 break;
2566 case BFD_MACH_O_MH_DYLIB:
2567 case BFD_MACH_O_MH_BUNDLE:
2568 abfd->flags |= DYNAMIC;
2569 break;
2570 }
2571
2572 abfd->tdata.mach_o_data = mdata;
2573
2574 bfd_mach_o_convert_architecture (header->cputype, header->cpusubtype,
2575 &cputype, &cpusubtype);
2576 if (cputype == bfd_arch_unknown)
2577 {
2578 fprintf (stderr, "bfd_mach_o_scan: unknown architecture 0x%lx/0x%lx\n",
2579 header->cputype, header->cpusubtype);
2580 return -1;
2581 }
2582
2583 bfd_set_arch_mach (abfd, cputype, cpusubtype);
2584
2585 if (header->ncmds != 0)
2586 {
2587 mdata->commands = bfd_alloc
2588 (abfd, header->ncmds * sizeof (bfd_mach_o_load_command));
2589 if (mdata->commands == NULL)
2590 return -1;
2591
2592 for (i = 0; i < header->ncmds; i++)
2593 {
2594 bfd_mach_o_load_command *cur = &mdata->commands[i];
2595
2596 if (i == 0)
2597 cur->offset = hdrsize;
2598 else
2599 {
2600 bfd_mach_o_load_command *prev = &mdata->commands[i - 1];
2601 cur->offset = prev->offset + prev->len;
2602 }
2603
2604 if (bfd_mach_o_scan_read_command (abfd, cur) < 0)
2605 return -1;
2606 }
2607 }
2608
2609 if (bfd_mach_o_scan_start_address (abfd) < 0)
2610 return -1;
2611
2612 bfd_mach_o_flatten_sections (abfd);
2613 return 0;
2614 }
2615
2616 bfd_boolean
2617 bfd_mach_o_mkobject_init (bfd *abfd)
2618 {
2619 bfd_mach_o_data_struct *mdata = NULL;
2620
2621 mdata = bfd_alloc (abfd, sizeof (bfd_mach_o_data_struct));
2622 if (mdata == NULL)
2623 return FALSE;
2624 abfd->tdata.mach_o_data = mdata;
2625
2626 mdata->header.magic = 0;
2627 mdata->header.cputype = 0;
2628 mdata->header.cpusubtype = 0;
2629 mdata->header.filetype = 0;
2630 mdata->header.ncmds = 0;
2631 mdata->header.sizeofcmds = 0;
2632 mdata->header.flags = 0;
2633 mdata->header.byteorder = BFD_ENDIAN_UNKNOWN;
2634 mdata->commands = NULL;
2635 mdata->nsects = 0;
2636 mdata->sections = NULL;
2637
2638 return TRUE;
2639 }
2640
2641 const bfd_target *
2642 bfd_mach_o_header_p (bfd *abfd,
2643 bfd_mach_o_filetype filetype,
2644 bfd_mach_o_cpu_type cputype)
2645 {
2646 struct bfd_preserve preserve;
2647 bfd_mach_o_header header;
2648
2649 preserve.marker = NULL;
2650 if (!bfd_mach_o_read_header (abfd, &header))
2651 goto wrong;
2652
2653 if (! (header.byteorder == BFD_ENDIAN_BIG
2654 || header.byteorder == BFD_ENDIAN_LITTLE))
2655 {
2656 fprintf (stderr, "unknown header byte-order value 0x%lx\n",
2657 (unsigned long) header.byteorder);
2658 goto wrong;
2659 }
2660
2661 if (! ((header.byteorder == BFD_ENDIAN_BIG
2662 && abfd->xvec->byteorder == BFD_ENDIAN_BIG
2663 && abfd->xvec->header_byteorder == BFD_ENDIAN_BIG)
2664 || (header.byteorder == BFD_ENDIAN_LITTLE
2665 && abfd->xvec->byteorder == BFD_ENDIAN_LITTLE
2666 && abfd->xvec->header_byteorder == BFD_ENDIAN_LITTLE)))
2667 goto wrong;
2668
2669 /* Check cputype and filetype.
2670 In case of wildcard, do not accept magics that are handled by existing
2671 targets. */
2672 if (cputype)
2673 {
2674 if (header.cputype != cputype)
2675 goto wrong;
2676 }
2677 else
2678 {
2679 switch (header.cputype)
2680 {
2681 case BFD_MACH_O_CPU_TYPE_I386:
2682 /* Handled by mach-o-i386 */
2683 goto wrong;
2684 default:
2685 break;
2686 }
2687 }
2688 if (filetype)
2689 {
2690 if (header.filetype != filetype)
2691 goto wrong;
2692 }
2693 else
2694 {
2695 switch (header.filetype)
2696 {
2697 case BFD_MACH_O_MH_CORE:
2698 /* Handled by core_p */
2699 goto wrong;
2700 default:
2701 break;
2702 }
2703 }
2704
2705 preserve.marker = bfd_zalloc (abfd, sizeof (bfd_mach_o_data_struct));
2706 if (preserve.marker == NULL
2707 || !bfd_preserve_save (abfd, &preserve))
2708 goto fail;
2709
2710 if (bfd_mach_o_scan (abfd, &header,
2711 (bfd_mach_o_data_struct *) preserve.marker) != 0)
2712 goto wrong;
2713
2714 bfd_preserve_finish (abfd, &preserve);
2715 return abfd->xvec;
2716
2717 wrong:
2718 bfd_set_error (bfd_error_wrong_format);
2719
2720 fail:
2721 if (preserve.marker != NULL)
2722 bfd_preserve_restore (abfd, &preserve);
2723 return NULL;
2724 }
2725
2726 static const bfd_target *
2727 bfd_mach_o_gen_object_p (bfd *abfd)
2728 {
2729 return bfd_mach_o_header_p (abfd, 0, 0);
2730 }
2731
2732 static const bfd_target *
2733 bfd_mach_o_gen_core_p (bfd *abfd)
2734 {
2735 return bfd_mach_o_header_p (abfd, BFD_MACH_O_MH_CORE, 0);
2736 }
2737
2738 typedef struct mach_o_fat_archentry
2739 {
2740 unsigned long cputype;
2741 unsigned long cpusubtype;
2742 unsigned long offset;
2743 unsigned long size;
2744 unsigned long align;
2745 } mach_o_fat_archentry;
2746
2747 typedef struct mach_o_fat_data_struct
2748 {
2749 unsigned long magic;
2750 unsigned long nfat_arch;
2751 mach_o_fat_archentry *archentries;
2752 } mach_o_fat_data_struct;
2753
2754 const bfd_target *
2755 bfd_mach_o_archive_p (bfd *abfd)
2756 {
2757 mach_o_fat_data_struct *adata = NULL;
2758 unsigned char buf[20];
2759 unsigned long i;
2760
2761 if (bfd_seek (abfd, 0, SEEK_SET) != 0
2762 || bfd_bread ((PTR) buf, 8, abfd) != 8)
2763 goto error;
2764
2765 adata = bfd_alloc (abfd, sizeof (mach_o_fat_data_struct));
2766 if (adata == NULL)
2767 goto error;
2768
2769 adata->magic = bfd_getb32 (buf);
2770 adata->nfat_arch = bfd_getb32 (buf + 4);
2771 if (adata->magic != 0xcafebabe)
2772 goto error;
2773 /* Avoid matching Java bytecode files, which have the same magic number.
2774 In the Java bytecode file format this field contains the JVM version,
2775 which starts at 43.0. */
2776 if (adata->nfat_arch > 30)
2777 goto error;
2778
2779 adata->archentries =
2780 bfd_alloc (abfd, adata->nfat_arch * sizeof (mach_o_fat_archentry));
2781 if (adata->archentries == NULL)
2782 goto error;
2783
2784 for (i = 0; i < adata->nfat_arch; i++)
2785 {
2786 if (bfd_seek (abfd, 8 + 20 * i, SEEK_SET) != 0
2787 || bfd_bread ((PTR) buf, 20, abfd) != 20)
2788 goto error;
2789 adata->archentries[i].cputype = bfd_getb32 (buf);
2790 adata->archentries[i].cpusubtype = bfd_getb32 (buf + 4);
2791 adata->archentries[i].offset = bfd_getb32 (buf + 8);
2792 adata->archentries[i].size = bfd_getb32 (buf + 12);
2793 adata->archentries[i].align = bfd_getb32 (buf + 16);
2794 }
2795
2796 abfd->tdata.mach_o_fat_data = adata;
2797 return abfd->xvec;
2798
2799 error:
2800 if (adata != NULL)
2801 bfd_release (abfd, adata);
2802 bfd_set_error (bfd_error_wrong_format);
2803 return NULL;
2804 }
2805
2806 bfd *
2807 bfd_mach_o_openr_next_archived_file (bfd *archive, bfd *prev)
2808 {
2809 mach_o_fat_data_struct *adata;
2810 mach_o_fat_archentry *entry = NULL;
2811 unsigned long i;
2812 bfd *nbfd;
2813 enum bfd_architecture arch_type;
2814 unsigned long arch_subtype;
2815
2816 adata = (mach_o_fat_data_struct *) archive->tdata.mach_o_fat_data;
2817 BFD_ASSERT (adata != NULL);
2818
2819 /* Find index of previous entry. */
2820 if (prev == NULL)
2821 i = 0; /* Start at first one. */
2822 else
2823 {
2824 for (i = 0; i < adata->nfat_arch; i++)
2825 {
2826 if (adata->archentries[i].offset == prev->origin)
2827 break;
2828 }
2829
2830 if (i == adata->nfat_arch)
2831 {
2832 /* Not found. */
2833 bfd_set_error (bfd_error_bad_value);
2834 return NULL;
2835 }
2836 i++; /* Get next entry. */
2837 }
2838
2839 if (i >= adata->nfat_arch)
2840 {
2841 bfd_set_error (bfd_error_no_more_archived_files);
2842 return NULL;
2843 }
2844
2845 entry = &adata->archentries[i];
2846 nbfd = _bfd_new_bfd_contained_in (archive);
2847 if (nbfd == NULL)
2848 return NULL;
2849
2850 nbfd->origin = entry->offset;
2851
2852 bfd_mach_o_convert_architecture (entry->cputype, entry->cpusubtype,
2853 &arch_type, &arch_subtype);
2854 /* Create the member filename.
2855 Use FILENAME:ARCH_NAME. */
2856 {
2857 char *s = NULL;
2858 const char *arch_name;
2859 size_t arch_file_len = strlen (bfd_get_filename (archive));
2860
2861 arch_name = bfd_printable_arch_mach (arch_type, arch_subtype);
2862 s = bfd_malloc (arch_file_len + 1 + strlen (arch_name) + 1);
2863 if (s == NULL)
2864 return NULL;
2865 memcpy (s, bfd_get_filename (archive), arch_file_len);
2866 s[arch_file_len] = ':';
2867 strcpy (s + arch_file_len + 1, arch_name);
2868 nbfd->filename = s;
2869 }
2870 nbfd->iostream = NULL;
2871 bfd_set_arch_mach (nbfd, arch_type, arch_subtype);
2872
2873 return nbfd;
2874 }
2875
2876 /* If ABFD format is FORMAT and architecture is ARCH, return it.
2877 If ABFD is a fat image containing a member that corresponds to FORMAT
2878 and ARCH, returns it.
2879 In other case, returns NULL.
2880 This function allows transparent uses of fat images. */
2881 bfd *
2882 bfd_mach_o_fat_extract (bfd *abfd,
2883 bfd_format format,
2884 const bfd_arch_info_type *arch)
2885 {
2886 bfd *res;
2887 mach_o_fat_data_struct *adata;
2888 unsigned int i;
2889
2890 if (bfd_check_format (abfd, format))
2891 {
2892 if (bfd_get_arch_info (abfd) == arch)
2893 return abfd;
2894 return NULL;
2895 }
2896 if (!bfd_check_format (abfd, bfd_archive)
2897 || abfd->xvec != &mach_o_fat_vec)
2898 return NULL;
2899
2900 /* This is a Mach-O fat image. */
2901 adata = (mach_o_fat_data_struct *) abfd->tdata.mach_o_fat_data;
2902 BFD_ASSERT (adata != NULL);
2903
2904 for (i = 0; i < adata->nfat_arch; i++)
2905 {
2906 struct mach_o_fat_archentry *e = &adata->archentries[i];
2907 enum bfd_architecture cpu_type;
2908 unsigned long cpu_subtype;
2909
2910 bfd_mach_o_convert_architecture (e->cputype, e->cpusubtype,
2911 &cpu_type, &cpu_subtype);
2912 if (cpu_type != arch->arch || cpu_subtype != arch->mach)
2913 continue;
2914
2915 /* The architecture is found. */
2916 res = _bfd_new_bfd_contained_in (abfd);
2917 if (res == NULL)
2918 return NULL;
2919
2920 res->origin = e->offset;
2921
2922 res->filename = strdup (abfd->filename);
2923 res->iostream = NULL;
2924
2925 if (bfd_check_format (res, format))
2926 {
2927 BFD_ASSERT (bfd_get_arch_info (res) == arch);
2928 return res;
2929 }
2930 bfd_close (res);
2931 return NULL;
2932 }
2933
2934 return NULL;
2935 }
2936
2937 int
2938 bfd_mach_o_lookup_section (bfd *abfd,
2939 asection *section,
2940 bfd_mach_o_load_command **mcommand,
2941 bfd_mach_o_section **msection)
2942 {
2943 struct mach_o_data_struct *md = bfd_mach_o_get_data (abfd);
2944 unsigned int i, j, num;
2945
2946 bfd_mach_o_load_command *ncmd = NULL;
2947 bfd_mach_o_section *nsect = NULL;
2948
2949 BFD_ASSERT (mcommand != NULL);
2950 BFD_ASSERT (msection != NULL);
2951
2952 num = 0;
2953 for (i = 0; i < md->header.ncmds; i++)
2954 {
2955 struct bfd_mach_o_load_command *cmd = &md->commands[i];
2956 struct bfd_mach_o_segment_command *seg = NULL;
2957
2958 if (cmd->type != BFD_MACH_O_LC_SEGMENT
2959 || cmd->type != BFD_MACH_O_LC_SEGMENT_64)
2960 continue;
2961 seg = &cmd->command.segment;
2962
2963 for (j = 0; j < seg->nsects; j++)
2964 {
2965 struct bfd_mach_o_section *sect = &seg->sections[j];
2966
2967 if (sect->bfdsection == section)
2968 {
2969 if (num == 0)
2970 {
2971 nsect = sect;
2972 ncmd = cmd;
2973 }
2974 num++;
2975 }
2976 }
2977 }
2978
2979 *mcommand = ncmd;
2980 *msection = nsect;
2981 return num;
2982 }
2983
2984 int
2985 bfd_mach_o_lookup_command (bfd *abfd,
2986 bfd_mach_o_load_command_type type,
2987 bfd_mach_o_load_command **mcommand)
2988 {
2989 struct mach_o_data_struct *md = bfd_mach_o_get_data (abfd);
2990 bfd_mach_o_load_command *ncmd = NULL;
2991 unsigned int i, num;
2992
2993 BFD_ASSERT (md != NULL);
2994 BFD_ASSERT (mcommand != NULL);
2995
2996 num = 0;
2997 for (i = 0; i < md->header.ncmds; i++)
2998 {
2999 struct bfd_mach_o_load_command *cmd = &md->commands[i];
3000
3001 if (cmd->type != type)
3002 continue;
3003
3004 if (num == 0)
3005 ncmd = cmd;
3006 num++;
3007 }
3008
3009 *mcommand = ncmd;
3010 return num;
3011 }
3012
3013 unsigned long
3014 bfd_mach_o_stack_addr (enum bfd_mach_o_cpu_type type)
3015 {
3016 switch (type)
3017 {
3018 case BFD_MACH_O_CPU_TYPE_MC680x0:
3019 return 0x04000000;
3020 case BFD_MACH_O_CPU_TYPE_MC88000:
3021 return 0xffffe000;
3022 case BFD_MACH_O_CPU_TYPE_POWERPC:
3023 return 0xc0000000;
3024 case BFD_MACH_O_CPU_TYPE_I386:
3025 return 0xc0000000;
3026 case BFD_MACH_O_CPU_TYPE_SPARC:
3027 return 0xf0000000;
3028 case BFD_MACH_O_CPU_TYPE_I860:
3029 return 0;
3030 case BFD_MACH_O_CPU_TYPE_HPPA:
3031 return 0xc0000000 - 0x04000000;
3032 default:
3033 return 0;
3034 }
3035 }
3036
3037 typedef struct bfd_mach_o_xlat_name
3038 {
3039 const char *name;
3040 unsigned long val;
3041 }
3042 bfd_mach_o_xlat_name;
3043
3044 static void
3045 bfd_mach_o_print_flags (const bfd_mach_o_xlat_name *table,
3046 unsigned long val,
3047 FILE *file)
3048 {
3049 int first = 1;
3050
3051 for (; table->name; table++)
3052 {
3053 if (table->val & val)
3054 {
3055 if (!first)
3056 fprintf (file, "+");
3057 fprintf (file, "%s", table->name);
3058 val &= ~table->val;
3059 first = 0;
3060 }
3061 }
3062 if (val)
3063 {
3064 if (!first)
3065 fprintf (file, "+");
3066 fprintf (file, "0x%lx", val);
3067 return;
3068 }
3069 if (first)
3070 fprintf (file, "-");
3071 }
3072
3073 static const char *
3074 bfd_mach_o_get_name (const bfd_mach_o_xlat_name *table, unsigned long val)
3075 {
3076 for (; table->name; table++)
3077 if (table->val == val)
3078 return table->name;
3079 return "*UNKNOWN*";
3080 }
3081
3082 static bfd_mach_o_xlat_name bfd_mach_o_cpu_name[] =
3083 {
3084 { "vax", BFD_MACH_O_CPU_TYPE_VAX },
3085 { "mc680x0", BFD_MACH_O_CPU_TYPE_MC680x0 },
3086 { "i386", BFD_MACH_O_CPU_TYPE_I386 },
3087 { "mips", BFD_MACH_O_CPU_TYPE_MIPS },
3088 { "mc98000", BFD_MACH_O_CPU_TYPE_MC98000 },
3089 { "hppa", BFD_MACH_O_CPU_TYPE_HPPA },
3090 { "arm", BFD_MACH_O_CPU_TYPE_ARM },
3091 { "mc88000", BFD_MACH_O_CPU_TYPE_MC88000 },
3092 { "sparc", BFD_MACH_O_CPU_TYPE_SPARC },
3093 { "i860", BFD_MACH_O_CPU_TYPE_I860 },
3094 { "alpha", BFD_MACH_O_CPU_TYPE_ALPHA },
3095 { "powerpc", BFD_MACH_O_CPU_TYPE_POWERPC },
3096 { "powerpc_64", BFD_MACH_O_CPU_TYPE_POWERPC_64 },
3097 { "x86_64", BFD_MACH_O_CPU_TYPE_X86_64 },
3098 { NULL, 0}
3099 };
3100
3101 static bfd_mach_o_xlat_name bfd_mach_o_filetype_name[] =
3102 {
3103 { "object", BFD_MACH_O_MH_OBJECT },
3104 { "execute", BFD_MACH_O_MH_EXECUTE },
3105 { "fvmlib", BFD_MACH_O_MH_FVMLIB },
3106 { "core", BFD_MACH_O_MH_CORE },
3107 { "preload", BFD_MACH_O_MH_PRELOAD },
3108 { "dylib", BFD_MACH_O_MH_DYLIB },
3109 { "dylinker", BFD_MACH_O_MH_DYLINKER },
3110 { "bundle", BFD_MACH_O_MH_BUNDLE },
3111 { "dylib_stub", BFD_MACH_O_MH_DYLIB_STUB },
3112 { "dym", BFD_MACH_O_MH_DSYM },
3113 { "kext_bundle", BFD_MACH_O_MH_KEXT_BUNDLE },
3114 { NULL, 0}
3115 };
3116
3117 static bfd_mach_o_xlat_name bfd_mach_o_header_flags_name[] =
3118 {
3119 { "noundefs", BFD_MACH_O_MH_NOUNDEFS },
3120 { "incrlink", BFD_MACH_O_MH_INCRLINK },
3121 { "dyldlink", BFD_MACH_O_MH_DYLDLINK },
3122 { "bindatload", BFD_MACH_O_MH_BINDATLOAD },
3123 { "prebound", BFD_MACH_O_MH_PREBOUND },
3124 { "split_segs", BFD_MACH_O_MH_SPLIT_SEGS },
3125 { "lazy_init", BFD_MACH_O_MH_LAZY_INIT },
3126 { "twolevel", BFD_MACH_O_MH_TWOLEVEL },
3127 { "force_flat", BFD_MACH_O_MH_FORCE_FLAT },
3128 { "nomultidefs", BFD_MACH_O_MH_NOMULTIDEFS },
3129 { "nofixprebinding", BFD_MACH_O_MH_NOFIXPREBINDING },
3130 { "prebindable", BFD_MACH_O_MH_PREBINDABLE },
3131 { "allmodsbound", BFD_MACH_O_MH_ALLMODSBOUND },
3132 { "subsections_via_symbols", BFD_MACH_O_MH_SUBSECTIONS_VIA_SYMBOLS },
3133 { "canonical", BFD_MACH_O_MH_CANONICAL },
3134 { "weak_defines", BFD_MACH_O_MH_WEAK_DEFINES },
3135 { "binds_to_weak", BFD_MACH_O_MH_BINDS_TO_WEAK },
3136 { "allow_stack_execution", BFD_MACH_O_MH_ALLOW_STACK_EXECUTION },
3137 { "root_safe", BFD_MACH_O_MH_ROOT_SAFE },
3138 { "setuid_safe", BFD_MACH_O_MH_SETUID_SAFE },
3139 { "no_reexported_dylibs", BFD_MACH_O_MH_NO_REEXPORTED_DYLIBS },
3140 { "pie", BFD_MACH_O_MH_PIE },
3141 { NULL, 0}
3142 };
3143
3144 static bfd_mach_o_xlat_name bfd_mach_o_section_type_name[] =
3145 {
3146 { "regular", BFD_MACH_O_S_REGULAR},
3147 { "zerofill", BFD_MACH_O_S_ZEROFILL},
3148 { "cstring_literals", BFD_MACH_O_S_CSTRING_LITERALS},
3149 { "4byte_literals", BFD_MACH_O_S_4BYTE_LITERALS},
3150 { "8byte_literals", BFD_MACH_O_S_8BYTE_LITERALS},
3151 { "literal_pointers", BFD_MACH_O_S_LITERAL_POINTERS},
3152 { "non_lazy_symbol_pointers", BFD_MACH_O_S_NON_LAZY_SYMBOL_POINTERS},
3153 { "lazy_symbol_pointers", BFD_MACH_O_S_LAZY_SYMBOL_POINTERS},
3154 { "symbol_stubs", BFD_MACH_O_S_SYMBOL_STUBS},
3155 { "mod_init_func_pointers", BFD_MACH_O_S_MOD_INIT_FUNC_POINTERS},
3156 { "mod_fini_func_pointers", BFD_MACH_O_S_MOD_FINI_FUNC_POINTERS},
3157 { "coalesced", BFD_MACH_O_S_COALESCED},
3158 { "gb_zerofill", BFD_MACH_O_S_GB_ZEROFILL},
3159 { "interposing", BFD_MACH_O_S_INTERPOSING},
3160 { "16byte_literals", BFD_MACH_O_S_16BYTE_LITERALS},
3161 { "dtrace_dof", BFD_MACH_O_S_DTRACE_DOF},
3162 { "lazy_dylib_symbol_pointers", BFD_MACH_O_S_LAZY_DYLIB_SYMBOL_POINTERS},
3163 { NULL, 0}
3164 };
3165
3166 static bfd_mach_o_xlat_name bfd_mach_o_section_attribute_name[] =
3167 {
3168 { "loc_reloc", BFD_MACH_O_S_ATTR_LOC_RELOC },
3169 { "ext_reloc", BFD_MACH_O_S_ATTR_EXT_RELOC },
3170 { "some_instructions", BFD_MACH_O_S_ATTR_SOME_INSTRUCTIONS },
3171 { "debug", BFD_MACH_O_S_ATTR_DEBUG },
3172 { "modifying_code", BFD_MACH_O_S_SELF_MODIFYING_CODE },
3173 { "live_support", BFD_MACH_O_S_ATTR_LIVE_SUPPORT },
3174 { "no_dead_strip", BFD_MACH_O_S_ATTR_NO_DEAD_STRIP },
3175 { "strip_static_syms", BFD_MACH_O_S_ATTR_STRIP_STATIC_SYMS },
3176 { "no_toc", BFD_MACH_O_S_ATTR_NO_TOC },
3177 { "pure_instructions", BFD_MACH_O_S_ATTR_PURE_INSTRUCTIONS },
3178 { NULL, 0}
3179 };
3180
3181 static bfd_mach_o_xlat_name bfd_mach_o_load_command_name[] =
3182 {
3183 { "segment", BFD_MACH_O_LC_SEGMENT},
3184 { "symtab", BFD_MACH_O_LC_SYMTAB},
3185 { "symseg", BFD_MACH_O_LC_SYMSEG},
3186 { "thread", BFD_MACH_O_LC_THREAD},
3187 { "unixthread", BFD_MACH_O_LC_UNIXTHREAD},
3188 { "loadfvmlib", BFD_MACH_O_LC_LOADFVMLIB},
3189 { "idfvmlib", BFD_MACH_O_LC_IDFVMLIB},
3190 { "ident", BFD_MACH_O_LC_IDENT},
3191 { "fvmfile", BFD_MACH_O_LC_FVMFILE},
3192 { "prepage", BFD_MACH_O_LC_PREPAGE},
3193 { "dysymtab", BFD_MACH_O_LC_DYSYMTAB},
3194 { "load_dylib", BFD_MACH_O_LC_LOAD_DYLIB},
3195 { "id_dylib", BFD_MACH_O_LC_ID_DYLIB},
3196 { "load_dylinker", BFD_MACH_O_LC_LOAD_DYLINKER},
3197 { "id_dylinker", BFD_MACH_O_LC_ID_DYLINKER},
3198 { "prebound_dylib", BFD_MACH_O_LC_PREBOUND_DYLIB},
3199 { "routines", BFD_MACH_O_LC_ROUTINES},
3200 { "sub_framework", BFD_MACH_O_LC_SUB_FRAMEWORK},
3201 { "sub_umbrella", BFD_MACH_O_LC_SUB_UMBRELLA},
3202 { "sub_client", BFD_MACH_O_LC_SUB_CLIENT},
3203 { "sub_library", BFD_MACH_O_LC_SUB_LIBRARY},
3204 { "twolevel_hints", BFD_MACH_O_LC_TWOLEVEL_HINTS},
3205 { "prebind_cksum", BFD_MACH_O_LC_PREBIND_CKSUM},
3206 { "load_weak_dylib", BFD_MACH_O_LC_LOAD_WEAK_DYLIB},
3207 { "segment_64", BFD_MACH_O_LC_SEGMENT_64},
3208 { "routines_64", BFD_MACH_O_LC_ROUTINES_64},
3209 { "uuid", BFD_MACH_O_LC_UUID},
3210 { "rpath", BFD_MACH_O_LC_RPATH},
3211 { "code_signature", BFD_MACH_O_LC_CODE_SIGNATURE},
3212 { "segment_split_info", BFD_MACH_O_LC_SEGMENT_SPLIT_INFO},
3213 { "reexport_dylib", BFD_MACH_O_LC_REEXPORT_DYLIB},
3214 { "lazy_load_dylib", BFD_MACH_O_LC_LAZY_LOAD_DYLIB},
3215 { "encryption_info", BFD_MACH_O_LC_ENCRYPTION_INFO},
3216 { "dyld_info", BFD_MACH_O_LC_DYLD_INFO},
3217 { NULL, 0}
3218 };
3219
3220 static void
3221 bfd_mach_o_print_private_header (bfd *abfd, FILE *file)
3222 {
3223 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
3224 bfd_mach_o_header *h = &mdata->header;
3225
3226 fputs (_("Mach-O header:\n"), file);
3227 fprintf (file, _(" magic : %08lx\n"), h->magic);
3228 fprintf (file, _(" cputype : %08lx (%s)\n"), h->cputype,
3229 bfd_mach_o_get_name (bfd_mach_o_cpu_name, h->cputype));
3230 fprintf (file, _(" cpusubtype: %08lx\n"), h->cpusubtype);
3231 fprintf (file, _(" filetype : %08lx (%s)\n"),
3232 h->filetype,
3233 bfd_mach_o_get_name (bfd_mach_o_filetype_name, h->filetype));
3234 fprintf (file, _(" ncmds : %08lx\n"), h->ncmds);
3235 fprintf (file, _(" sizeofcmds: %08lx\n"), h->sizeofcmds);
3236 fprintf (file, _(" flags : %08lx ("), h->flags);
3237 bfd_mach_o_print_flags (bfd_mach_o_header_flags_name, h->flags, file);
3238 fputs (_(")\n"), file);
3239 fprintf (file, _(" reserved : %08x\n"), h->reserved);
3240 }
3241
3242 static void
3243 bfd_mach_o_print_section_map (bfd *abfd, FILE *file)
3244 {
3245 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
3246 unsigned int i, j;
3247 unsigned int sec_nbr = 0;
3248
3249 fputs (_("Segments and Sections:\n"), file);
3250 fputs (_(" #: Segment name Section name Address\n"), file);
3251
3252 for (i = 0; i < mdata->header.ncmds; i++)
3253 {
3254 bfd_mach_o_segment_command *seg;
3255
3256 if (mdata->commands[i].type != BFD_MACH_O_LC_SEGMENT
3257 && mdata->commands[i].type != BFD_MACH_O_LC_SEGMENT_64)
3258 continue;
3259
3260 seg = &mdata->commands[i].command.segment;
3261
3262 fprintf (file, "[Segment %-16s ", seg->segname);
3263 fprintf_vma (file, seg->vmaddr);
3264 fprintf (file, "-");
3265 fprintf_vma (file, seg->vmaddr + seg->vmsize - 1);
3266 fputc (' ', file);
3267 fputc (seg->initprot & BFD_MACH_O_PROT_READ ? 'r' : '-', file);
3268 fputc (seg->initprot & BFD_MACH_O_PROT_WRITE ? 'w' : '-', file);
3269 fputc (seg->initprot & BFD_MACH_O_PROT_EXECUTE ? 'x' : '-', file);
3270 fprintf (file, "]\n");
3271 for (j = 0; j < seg->nsects; j++)
3272 {
3273 bfd_mach_o_section *sec = &seg->sections[j];
3274 fprintf (file, "%02u: %-16s %-16s ", ++sec_nbr,
3275 sec->segname, sec->sectname);
3276 fprintf_vma (file, sec->addr);
3277 fprintf (file, " ");
3278 fprintf_vma (file, sec->size);
3279 fprintf (file, " %08lx\n", sec->flags);
3280 }
3281 }
3282 }
3283
3284 /* Return the size of an entry for section SEC.
3285 Must be called only for symbol pointer section and symbol stubs
3286 sections. */
3287
3288 static unsigned int
3289 bfd_mach_o_section_get_entry_size (bfd *abfd, bfd_mach_o_section *sec)
3290 {
3291 switch (sec->flags & BFD_MACH_O_SECTION_TYPE_MASK)
3292 {
3293 case BFD_MACH_O_S_NON_LAZY_SYMBOL_POINTERS:
3294 case BFD_MACH_O_S_LAZY_SYMBOL_POINTERS:
3295 return bfd_mach_o_wide_p (abfd) ? 8 : 4;
3296 case BFD_MACH_O_S_SYMBOL_STUBS:
3297 return sec->reserved2;
3298 default:
3299 BFD_FAIL ();
3300 return 0;
3301 }
3302 }
3303
3304 /* Return the number of indirect symbols for a section.
3305 Must be called only for symbol pointer section and symbol stubs
3306 sections. */
3307
3308 static unsigned int
3309 bfd_mach_o_section_get_nbr_indirect (bfd *abfd, bfd_mach_o_section *sec)
3310 {
3311 unsigned int elsz;
3312
3313 elsz = bfd_mach_o_section_get_entry_size (abfd, sec);
3314 if (elsz == 0)
3315 return 0;
3316 else
3317 return sec->size / elsz;
3318 }
3319
3320 static void
3321 bfd_mach_o_print_section (bfd *abfd ATTRIBUTE_UNUSED,
3322 bfd_mach_o_section *sec, FILE *file)
3323 {
3324 fprintf (file, " Section: %-16s %-16s (bfdname: %s)\n",
3325 sec->sectname, sec->segname, sec->bfdsection->name);
3326 fprintf (file, " addr: ");
3327 fprintf_vma (file, sec->addr);
3328 fprintf (file, " size: ");
3329 fprintf_vma (file, sec->size);
3330 fprintf (file, " offset: ");
3331 fprintf_vma (file, sec->offset);
3332 fprintf (file, "\n");
3333 fprintf (file, " align: %ld", sec->align);
3334 fprintf (file, " nreloc: %lu reloff: ", sec->nreloc);
3335 fprintf_vma (file, sec->reloff);
3336 fprintf (file, "\n");
3337 fprintf (file, " flags: %08lx (type: %s", sec->flags,
3338 bfd_mach_o_get_name (bfd_mach_o_section_type_name,
3339 sec->flags & BFD_MACH_O_SECTION_TYPE_MASK));
3340 fprintf (file, " attr: ");
3341 bfd_mach_o_print_flags (bfd_mach_o_section_attribute_name,
3342 sec->flags & BFD_MACH_O_SECTION_ATTRIBUTES_MASK,
3343 file);
3344 fprintf (file, ")\n");
3345 switch (sec->flags & BFD_MACH_O_SECTION_TYPE_MASK)
3346 {
3347 case BFD_MACH_O_S_NON_LAZY_SYMBOL_POINTERS:
3348 case BFD_MACH_O_S_LAZY_SYMBOL_POINTERS:
3349 case BFD_MACH_O_S_SYMBOL_STUBS:
3350 fprintf (file, " first indirect sym: %lu", sec->reserved1);
3351 fprintf (file, " (%u entries)",
3352 bfd_mach_o_section_get_nbr_indirect (abfd, sec));
3353 break;
3354 default:
3355 fprintf (file, " reserved1: 0x%lx", sec->reserved1);
3356 break;
3357 }
3358 switch (sec->flags & BFD_MACH_O_SECTION_TYPE_MASK)
3359 {
3360 case BFD_MACH_O_S_SYMBOL_STUBS:
3361 fprintf (file, " stub size: %lu", sec->reserved2);
3362 break;
3363 default:
3364 fprintf (file, " reserved2: 0x%lx", sec->reserved2);
3365 break;
3366 }
3367 fprintf (file, " reserved3: 0x%lx\n", sec->reserved3);
3368 }
3369
3370 static void
3371 bfd_mach_o_print_segment (bfd *abfd ATTRIBUTE_UNUSED,
3372 bfd_mach_o_load_command *cmd, FILE *file)
3373 {
3374 bfd_mach_o_segment_command *seg = &cmd->command.segment;
3375 unsigned int i;
3376
3377 fprintf (file, " name: %s\n", *seg->segname ? seg->segname : "*none*");
3378 fprintf (file, " vmaddr: ");
3379 fprintf_vma (file, seg->vmaddr);
3380 fprintf (file, " vmsize: ");
3381 fprintf_vma (file, seg->vmsize);
3382 fprintf (file, "\n");
3383 fprintf (file, " fileoff: ");
3384 fprintf_vma (file, seg->fileoff);
3385 fprintf (file, " filesize: ");
3386 fprintf_vma (file, (bfd_vma)seg->filesize);
3387 fprintf (file, " endoff: ");
3388 fprintf_vma (file, (bfd_vma)(seg->fileoff + seg->filesize));
3389 fprintf (file, "\n");
3390 fprintf (file, " nsects: %lu ", seg->nsects);
3391 fprintf (file, " flags: %lx\n", seg->flags);
3392 for (i = 0; i < seg->nsects; i++)
3393 bfd_mach_o_print_section (abfd, &seg->sections[i], file);
3394 }
3395
3396 static void
3397 bfd_mach_o_print_dysymtab (bfd *abfd ATTRIBUTE_UNUSED,
3398 bfd_mach_o_load_command *cmd, FILE *file)
3399 {
3400 bfd_mach_o_dysymtab_command *dysymtab = &cmd->command.dysymtab;
3401 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
3402 unsigned int i;
3403
3404 fprintf (file, " local symbols: idx: %10lu num: %-8lu",
3405 dysymtab->ilocalsym, dysymtab->nlocalsym);
3406 fprintf (file, " (nxtidx: %lu)\n",
3407 dysymtab->ilocalsym + dysymtab->nlocalsym);
3408 fprintf (file, " external symbols: idx: %10lu num: %-8lu",
3409 dysymtab->iextdefsym, dysymtab->nextdefsym);
3410 fprintf (file, " (nxtidx: %lu)\n",
3411 dysymtab->iextdefsym + dysymtab->nextdefsym);
3412 fprintf (file, " undefined symbols: idx: %10lu num: %-8lu",
3413 dysymtab->iundefsym, dysymtab->nundefsym);
3414 fprintf (file, " (nxtidx: %lu)\n",
3415 dysymtab->iundefsym + dysymtab->nundefsym);
3416 fprintf (file, " table of content: off: 0x%08lx num: %-8lu",
3417 dysymtab->tocoff, dysymtab->ntoc);
3418 fprintf (file, " (endoff: 0x%08lx)\n",
3419 dysymtab->tocoff
3420 + dysymtab->ntoc * BFD_MACH_O_TABLE_OF_CONTENT_SIZE);
3421 fprintf (file, " module table: off: 0x%08lx num: %-8lu",
3422 dysymtab->modtaboff, dysymtab->nmodtab);
3423 fprintf (file, " (endoff: 0x%08lx)\n",
3424 dysymtab->modtaboff + dysymtab->nmodtab
3425 * (mach_o_wide_p (&mdata->header) ?
3426 BFD_MACH_O_DYLIB_MODULE_64_SIZE : BFD_MACH_O_DYLIB_MODULE_SIZE));
3427 fprintf (file, " external reference table: off: 0x%08lx num: %-8lu",
3428 dysymtab->extrefsymoff, dysymtab->nextrefsyms);
3429 fprintf (file, " (endoff: 0x%08lx)\n",
3430 dysymtab->extrefsymoff
3431 + dysymtab->nextrefsyms * BFD_MACH_O_REFERENCE_SIZE);
3432 fprintf (file, " indirect symbol table: off: 0x%08lx num: %-8lu",
3433 dysymtab->indirectsymoff, dysymtab->nindirectsyms);
3434 fprintf (file, " (endoff: 0x%08lx)\n",
3435 dysymtab->indirectsymoff
3436 + dysymtab->nindirectsyms * BFD_MACH_O_INDIRECT_SYMBOL_SIZE);
3437 fprintf (file, " external relocation table: off: 0x%08lx num: %-8lu",
3438 dysymtab->extreloff, dysymtab->nextrel);
3439 fprintf (file, " (endoff: 0x%08lx)\n",
3440 dysymtab->extreloff + dysymtab->nextrel * BFD_MACH_O_RELENT_SIZE);
3441 fprintf (file, " local relocation table: off: 0x%08lx num: %-8lu",
3442 dysymtab->locreloff, dysymtab->nlocrel);
3443 fprintf (file, " (endoff: 0x%08lx)\n",
3444 dysymtab->locreloff + dysymtab->nlocrel * BFD_MACH_O_RELENT_SIZE);
3445
3446 if (dysymtab->ntoc > 0
3447 || dysymtab->nindirectsyms > 0
3448 || dysymtab->nextrefsyms > 0)
3449 {
3450 /* Try to read the symbols to display the toc or indirect symbols. */
3451 bfd_mach_o_scan_read_symtab_symbols (abfd);
3452 }
3453 else if (dysymtab->nmodtab > 0)
3454 {
3455 /* Try to read the strtab to display modules name. */
3456 bfd_mach_o_scan_read_symtab_strtab (abfd);
3457 }
3458
3459 for (i = 0; i < dysymtab->nmodtab; i++)
3460 {
3461 bfd_mach_o_dylib_module *module = &dysymtab->dylib_module[i];
3462 fprintf (file, " module %u:\n", i);
3463 fprintf (file, " name: %lu", module->module_name_idx);
3464 if (mdata->symtab && mdata->symtab->strtab)
3465 fprintf (file, ": %s",
3466 mdata->symtab->strtab + module->module_name_idx);
3467 fprintf (file, "\n");
3468 fprintf (file, " extdefsym: idx: %8lu num: %lu\n",
3469 module->iextdefsym, module->nextdefsym);
3470 fprintf (file, " refsym: idx: %8lu num: %lu\n",
3471 module->irefsym, module->nrefsym);
3472 fprintf (file, " localsym: idx: %8lu num: %lu\n",
3473 module->ilocalsym, module->nlocalsym);
3474 fprintf (file, " extrel: idx: %8lu num: %lu\n",
3475 module->iextrel, module->nextrel);
3476 fprintf (file, " init: idx: %8u num: %u\n",
3477 module->iinit, module->ninit);
3478 fprintf (file, " term: idx: %8u num: %u\n",
3479 module->iterm, module->nterm);
3480 fprintf (file, " objc_module_info: addr: ");
3481 fprintf_vma (file, module->objc_module_info_addr);
3482 fprintf (file, " size: %lu\n", module->objc_module_info_size);
3483 }
3484
3485 if (dysymtab->ntoc > 0)
3486 {
3487 bfd_mach_o_symtab_command *symtab = mdata->symtab;
3488
3489 fprintf (file, " table of content: (symbol/module)\n");
3490 for (i = 0; i < dysymtab->ntoc; i++)
3491 {
3492 bfd_mach_o_dylib_table_of_content *toc = &dysymtab->dylib_toc[i];
3493
3494 fprintf (file, " %4u: ", i);
3495 if (symtab && symtab->symbols && toc->symbol_index < symtab->nsyms)
3496 {
3497 const char *name = symtab->symbols[toc->symbol_index].symbol.name;
3498 fprintf (file, "%s (%lu)", name ? name : "*invalid*",
3499 toc->symbol_index);
3500 }
3501 else
3502 fprintf (file, "%lu", toc->symbol_index);
3503
3504 fprintf (file, " / ");
3505 if (symtab && symtab->strtab
3506 && toc->module_index < dysymtab->nmodtab)
3507 {
3508 bfd_mach_o_dylib_module *mod;
3509 mod = &dysymtab->dylib_module[toc->module_index];
3510 fprintf (file, "%s (%lu)",
3511 symtab->strtab + mod->module_name_idx,
3512 toc->module_index);
3513 }
3514 else
3515 fprintf (file, "%lu", toc->module_index);
3516
3517 fprintf (file, "\n");
3518 }
3519 }
3520
3521 if (dysymtab->nindirectsyms != 0)
3522 {
3523 fprintf (file, " indirect symbols:\n");
3524
3525 for (i = 0; i < mdata->nsects; i++)
3526 {
3527 bfd_mach_o_section *sec = mdata->sections[i];
3528 unsigned int j, first, last;
3529 bfd_mach_o_symtab_command *symtab = mdata->symtab;
3530 bfd_vma addr;
3531 bfd_vma entry_size;
3532
3533 switch (sec->flags & BFD_MACH_O_SECTION_TYPE_MASK)
3534 {
3535 case BFD_MACH_O_S_NON_LAZY_SYMBOL_POINTERS:
3536 case BFD_MACH_O_S_LAZY_SYMBOL_POINTERS:
3537 case BFD_MACH_O_S_SYMBOL_STUBS:
3538 first = sec->reserved1;
3539 last = first + bfd_mach_o_section_get_nbr_indirect (abfd, sec);
3540 addr = sec->addr;
3541 entry_size = bfd_mach_o_section_get_entry_size (abfd, sec);
3542 fprintf (file, " for section %s.%s:\n",
3543 sec->segname, sec->sectname);
3544 for (j = first; j < last; j++)
3545 {
3546 unsigned int isym = dysymtab->indirect_syms[j];
3547
3548 fprintf (file, " ");
3549 fprintf_vma (file, addr);
3550 fprintf (file, " %5u: 0x%08x", j, isym);
3551 if (isym & BFD_MACH_O_INDIRECT_SYMBOL_LOCAL)
3552 fprintf (file, " LOCAL");
3553 if (isym & BFD_MACH_O_INDIRECT_SYMBOL_ABS)
3554 fprintf (file, " ABSOLUTE");
3555 if (symtab && symtab->symbols
3556 && isym < symtab->nsyms
3557 && symtab->symbols[isym].symbol.name)
3558 fprintf (file, " %s", symtab->symbols[isym].symbol.name);
3559 fprintf (file, "\n");
3560 addr += entry_size;
3561 }
3562 break;
3563 default:
3564 break;
3565 }
3566 }
3567 }
3568 if (dysymtab->nextrefsyms > 0)
3569 {
3570 bfd_mach_o_symtab_command *symtab = mdata->symtab;
3571
3572 fprintf (file, " external reference table: (symbol flags)\n");
3573 for (i = 0; i < dysymtab->nextrefsyms; i++)
3574 {
3575 bfd_mach_o_dylib_reference *ref = &dysymtab->ext_refs[i];
3576
3577 fprintf (file, " %4u: %5lu 0x%02lx", i, ref->isym, ref->flags);
3578 if (symtab && symtab->symbols
3579 && ref->isym < symtab->nsyms
3580 && symtab->symbols[ref->isym].symbol.name)
3581 fprintf (file, " %s", symtab->symbols[ref->isym].symbol.name);
3582 fprintf (file, "\n");
3583 }
3584 }
3585
3586 }
3587
3588 static void
3589 bfd_mach_o_print_dyld_info (bfd *abfd ATTRIBUTE_UNUSED,
3590 bfd_mach_o_load_command *cmd, FILE *file)
3591 {
3592 bfd_mach_o_dyld_info_command *info = &cmd->command.dyld_info;
3593
3594 fprintf (file, " rebase: off: 0x%08x size: %-8u\n",
3595 info->rebase_off, info->rebase_size);
3596 fprintf (file, " bind: off: 0x%08x size: %-8u\n",
3597 info->bind_off, info->bind_size);
3598 fprintf (file, " weak bind: off: 0x%08x size: %-8u\n",
3599 info->weak_bind_off, info->weak_bind_size);
3600 fprintf (file, " lazy bind: off: 0x%08x size: %-8u\n",
3601 info->lazy_bind_off, info->lazy_bind_size);
3602 fprintf (file, " export: off: 0x%08x size: %-8u\n",
3603 info->export_off, info->export_size);
3604 }
3605
3606 bfd_boolean
3607 bfd_mach_o_bfd_print_private_bfd_data (bfd *abfd, PTR ptr)
3608 {
3609 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
3610 FILE *file = (FILE *) ptr;
3611 unsigned int i;
3612
3613 bfd_mach_o_print_private_header (abfd, file);
3614 fputc ('\n', file);
3615
3616 for (i = 0; i < mdata->header.ncmds; i++)
3617 {
3618 bfd_mach_o_load_command *cmd = &mdata->commands[i];
3619
3620 fprintf (file, "Load command %s:",
3621 bfd_mach_o_get_name (bfd_mach_o_load_command_name, cmd->type));
3622 switch (cmd->type)
3623 {
3624 case BFD_MACH_O_LC_SEGMENT:
3625 case BFD_MACH_O_LC_SEGMENT_64:
3626 bfd_mach_o_print_segment (abfd, cmd, file);
3627 break;
3628 case BFD_MACH_O_LC_UUID:
3629 {
3630 bfd_mach_o_uuid_command *uuid = &cmd->command.uuid;
3631 unsigned int i;
3632
3633 for (i = 0; i < sizeof (uuid->uuid); i++)
3634 fprintf (file, " %02x", uuid->uuid[i]);
3635 fputc ('\n', file);
3636 }
3637 break;
3638 case BFD_MACH_O_LC_LOAD_DYLIB:
3639 case BFD_MACH_O_LC_LOAD_WEAK_DYLIB:
3640 case BFD_MACH_O_LC_REEXPORT_DYLIB:
3641 case BFD_MACH_O_LC_ID_DYLIB:
3642 {
3643 bfd_mach_o_dylib_command *dylib = &cmd->command.dylib;
3644 fprintf (file, " %s\n", dylib->name_str);
3645 fprintf (file, " time stamp: 0x%08lx\n",
3646 dylib->timestamp);
3647 fprintf (file, " current version: 0x%08lx\n",
3648 dylib->current_version);
3649 fprintf (file, " comptibility version: 0x%08lx\n",
3650 dylib->compatibility_version);
3651 break;
3652 }
3653 case BFD_MACH_O_LC_LOAD_DYLINKER:
3654 case BFD_MACH_O_LC_ID_DYLINKER:
3655 fprintf (file, " %s\n", cmd->command.dylinker.name_str);
3656 break;
3657 case BFD_MACH_O_LC_SYMTAB:
3658 {
3659 bfd_mach_o_symtab_command *symtab = &cmd->command.symtab;
3660 fprintf (file,
3661 "\n"
3662 " symoff: 0x%08x nsyms: %8u (endoff: 0x%08x)\n",
3663 symtab->symoff, symtab->nsyms,
3664 symtab->symoff + symtab->nsyms
3665 * (mach_o_wide_p (&mdata->header)
3666 ? BFD_MACH_O_NLIST_64_SIZE : BFD_MACH_O_NLIST_SIZE));
3667 fprintf (file,
3668 " stroff: 0x%08x strsize: %8u (endoff: 0x%08x)\n",
3669 symtab->stroff, symtab->strsize,
3670 symtab->stroff + symtab->strsize);
3671 break;
3672 }
3673 case BFD_MACH_O_LC_DYSYMTAB:
3674 fprintf (file, "\n");
3675 bfd_mach_o_print_dysymtab (abfd, cmd, file);
3676 break;
3677 case BFD_MACH_O_LC_CODE_SIGNATURE:
3678 case BFD_MACH_O_LC_SEGMENT_SPLIT_INFO:
3679 {
3680 bfd_mach_o_linkedit_command *linkedit = &cmd->command.linkedit;
3681 fprintf
3682 (file, "\n"
3683 " dataoff: 0x%08lx datasize: 0x%08lx (endoff: 0x%08lx)\n",
3684 linkedit->dataoff, linkedit->datasize,
3685 linkedit->dataoff + linkedit->datasize);
3686 break;
3687 }
3688 case BFD_MACH_O_LC_SUB_FRAMEWORK:
3689 case BFD_MACH_O_LC_SUB_UMBRELLA:
3690 case BFD_MACH_O_LC_SUB_LIBRARY:
3691 case BFD_MACH_O_LC_SUB_CLIENT:
3692 {
3693 bfd_mach_o_str_command *str = &cmd->command.str;
3694 fprintf (file, " %s\n", str->str);
3695 break;
3696 }
3697 case BFD_MACH_O_LC_THREAD:
3698 case BFD_MACH_O_LC_UNIXTHREAD:
3699 {
3700 bfd_mach_o_thread_command *thread = &cmd->command.thread;
3701 unsigned int j;
3702 bfd_mach_o_backend_data *bed = bfd_mach_o_get_backend_data (abfd);
3703
3704 fprintf (file, " nflavours: %lu\n", thread->nflavours);
3705 for (j = 0; j < thread->nflavours; j++)
3706 {
3707 bfd_mach_o_thread_flavour *flavour = &thread->flavours[j];
3708
3709 fprintf (file, " %2u: flavour: 0x%08lx offset: 0x%08lx"
3710 " size: 0x%08lx\n",
3711 j, flavour->flavour, flavour->offset,
3712 flavour->size);
3713 if (bed->_bfd_mach_o_print_thread)
3714 {
3715 char *buf = bfd_malloc (flavour->size);
3716
3717 if (buf
3718 && bfd_seek (abfd, flavour->offset, SEEK_SET) == 0
3719 && (bfd_bread (buf, flavour->size, abfd)
3720 == flavour->size))
3721 (*bed->_bfd_mach_o_print_thread)(abfd, flavour,
3722 file, buf);
3723 free (buf);
3724 }
3725 }
3726 break;
3727 }
3728 case BFD_MACH_O_LC_DYLD_INFO:
3729 fprintf (file, "\n");
3730 bfd_mach_o_print_dyld_info (abfd, cmd, file);
3731 break;
3732 default:
3733 fprintf (file, "\n");
3734 break;
3735 }
3736 fputc ('\n', file);
3737 }
3738
3739 bfd_mach_o_print_section_map (abfd, file);
3740
3741 return TRUE;
3742 }
3743
3744 int
3745 bfd_mach_o_core_fetch_environment (bfd *abfd,
3746 unsigned char **rbuf,
3747 unsigned int *rlen)
3748 {
3749 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
3750 unsigned long stackaddr = bfd_mach_o_stack_addr (mdata->header.cputype);
3751 unsigned int i = 0;
3752
3753 for (i = 0; i < mdata->header.ncmds; i++)
3754 {
3755 bfd_mach_o_load_command *cur = &mdata->commands[i];
3756 bfd_mach_o_segment_command *seg = NULL;
3757
3758 if (cur->type != BFD_MACH_O_LC_SEGMENT)
3759 continue;
3760
3761 seg = &cur->command.segment;
3762
3763 if ((seg->vmaddr + seg->vmsize) == stackaddr)
3764 {
3765 unsigned long start = seg->fileoff;
3766 unsigned long end = seg->fileoff + seg->filesize;
3767 unsigned char *buf = bfd_malloc (1024);
3768 unsigned long size = 1024;
3769
3770 for (;;)
3771 {
3772 bfd_size_type nread = 0;
3773 unsigned long offset;
3774 int found_nonnull = 0;
3775
3776 if (size > (end - start))
3777 size = (end - start);
3778
3779 buf = bfd_realloc_or_free (buf, size);
3780 if (buf == NULL)
3781 return -1;
3782
3783 if (bfd_seek (abfd, end - size, SEEK_SET) != 0)
3784 {
3785 free (buf);
3786 return -1;
3787 }
3788
3789 nread = bfd_bread (buf, size, abfd);
3790
3791 if (nread != size)
3792 {
3793 free (buf);
3794 return -1;
3795 }
3796
3797 for (offset = 4; offset <= size; offset += 4)
3798 {
3799 unsigned long val;
3800
3801 val = *((unsigned long *) (buf + size - offset));
3802 if (! found_nonnull)
3803 {
3804 if (val != 0)
3805 found_nonnull = 1;
3806 }
3807 else if (val == 0x0)
3808 {
3809 unsigned long bottom;
3810 unsigned long top;
3811
3812 bottom = seg->fileoff + seg->filesize - offset;
3813 top = seg->fileoff + seg->filesize - 4;
3814 *rbuf = bfd_malloc (top - bottom);
3815 *rlen = top - bottom;
3816
3817 memcpy (*rbuf, buf + size - *rlen, *rlen);
3818 free (buf);
3819 return 0;
3820 }
3821 }
3822
3823 if (size == (end - start))
3824 break;
3825
3826 size *= 2;
3827 }
3828
3829 free (buf);
3830 }
3831 }
3832
3833 return -1;
3834 }
3835
3836 char *
3837 bfd_mach_o_core_file_failing_command (bfd *abfd)
3838 {
3839 unsigned char *buf = NULL;
3840 unsigned int len = 0;
3841 int ret = -1;
3842
3843 ret = bfd_mach_o_core_fetch_environment (abfd, &buf, &len);
3844 if (ret < 0)
3845 return NULL;
3846
3847 return (char *) buf;
3848 }
3849
3850 int
3851 bfd_mach_o_core_file_failing_signal (bfd *abfd ATTRIBUTE_UNUSED)
3852 {
3853 return 0;
3854 }
3855
3856 #define bfd_mach_o_bfd_reloc_type_lookup _bfd_norelocs_bfd_reloc_type_lookup
3857 #define bfd_mach_o_bfd_reloc_name_lookup _bfd_norelocs_bfd_reloc_name_lookup
3858
3859 #define bfd_mach_o_swap_reloc_in NULL
3860 #define bfd_mach_o_swap_reloc_out NULL
3861 #define bfd_mach_o_print_thread NULL
3862
3863 #define TARGET_NAME mach_o_be_vec
3864 #define TARGET_STRING "mach-o-be"
3865 #define TARGET_BIG_ENDIAN 1
3866 #define TARGET_ARCHIVE 0
3867 #include "mach-o-target.c"
3868
3869 #undef TARGET_NAME
3870 #undef TARGET_STRING
3871 #undef TARGET_BIG_ENDIAN
3872 #undef TARGET_ARCHIVE
3873
3874 #define TARGET_NAME mach_o_le_vec
3875 #define TARGET_STRING "mach-o-le"
3876 #define TARGET_BIG_ENDIAN 0
3877 #define TARGET_ARCHIVE 0
3878
3879 #include "mach-o-target.c"
3880
3881 #undef TARGET_NAME
3882 #undef TARGET_STRING
3883 #undef TARGET_BIG_ENDIAN
3884 #undef TARGET_ARCHIVE
3885
3886 #define TARGET_NAME mach_o_fat_vec
3887 #define TARGET_STRING "mach-o-fat"
3888 #define TARGET_BIG_ENDIAN 1
3889 #define TARGET_ARCHIVE 1
3890
3891 #include "mach-o-target.c"
3892
3893 #undef TARGET_NAME
3894 #undef TARGET_STRING
3895 #undef TARGET_BIG_ENDIAN
3896 #undef TARGET_ARCHIVE
GDB Binutils - Deliverables
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