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2010-02-08 Tristan Gingold <gingold@adacore.com>
[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_mach_o_gen_mkobject
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_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 flagword flags;
94 };
95
96 static const struct mach_o_section_name_xlat dwarf_section_names_xlat[] =
97 {
98 { ".debug_frame", "__debug_frame", SEC_DEBUGGING },
99 { ".debug_info", "__debug_info", SEC_DEBUGGING },
100 { ".debug_abbrev", "__debug_abbrev", SEC_DEBUGGING },
101 { ".debug_aranges", "__debug_aranges", SEC_DEBUGGING },
102 { ".debug_macinfo", "__debug_macinfo", SEC_DEBUGGING },
103 { ".debug_line", "__debug_line", SEC_DEBUGGING },
104 { ".debug_loc", "__debug_loc", SEC_DEBUGGING },
105 { ".debug_pubnames", "__debug_pubnames", SEC_DEBUGGING },
106 { ".debug_pubtypes", "__debug_pubtypes", SEC_DEBUGGING },
107 { ".debug_str", "__debug_str", SEC_DEBUGGING },
108 { ".debug_ranges", "__debug_ranges", SEC_DEBUGGING },
109 { NULL, NULL, 0}
110 };
111
112 static const struct mach_o_section_name_xlat text_section_names_xlat[] =
113 {
114 { ".text", "__text", SEC_CODE | SEC_LOAD },
115 { ".const", "__const", SEC_READONLY | SEC_DATA | SEC_LOAD },
116 { ".cstring", "__cstring", SEC_READONLY | SEC_DATA | SEC_LOAD },
117 { ".eh_frame", "__eh_frame", SEC_READONLY | SEC_LOAD },
118 { NULL, NULL, 0}
119 };
120
121 static const struct mach_o_section_name_xlat data_section_names_xlat[] =
122 {
123 { ".data", "__data", SEC_DATA | SEC_LOAD },
124 { ".const_data", "__const", SEC_DATA | SEC_LOAD },
125 { ".dyld", "__dyld", SEC_DATA | SEC_LOAD },
126 { ".lazy_symbol_ptr", "__la_symbol_ptr", SEC_DATA | SEC_LOAD },
127 { ".non_lazy_symbol_ptr", "__nl_symbol_ptr", SEC_DATA | SEC_LOAD },
128 { ".bss", "__bss", SEC_NO_FLAGS },
129 { NULL, NULL, 0}
130 };
131
132 struct mach_o_segment_name_xlat
133 {
134 const char *segname;
135 const struct mach_o_section_name_xlat *sections;
136 };
137
138 static const struct mach_o_segment_name_xlat segsec_names_xlat[] =
139 {
140 { "__DWARF", dwarf_section_names_xlat },
141 { "__TEXT", text_section_names_xlat },
142 { "__DATA", data_section_names_xlat },
143 { NULL, NULL }
144 };
145
146
147 /* Mach-O to bfd names. */
148
149 static void
150 bfd_mach_o_convert_section_name_to_bfd (bfd *abfd, bfd_mach_o_section *section,
151 char **name, flagword *flags)
152 {
153 const struct mach_o_segment_name_xlat *seg;
154 char *res;
155 unsigned int len;
156 const char *pfx = "";
157
158 *name = NULL;
159 *flags = SEC_NO_FLAGS;
160
161 for (seg = segsec_names_xlat; seg->segname; seg++)
162 {
163 if (strcmp (seg->segname, section->segname) == 0)
164 {
165 const struct mach_o_section_name_xlat *sec;
166
167 for (sec = seg->sections; sec->mach_o_name; sec++)
168 {
169 if (strcmp (sec->mach_o_name, section->sectname) == 0)
170 {
171 len = strlen (sec->bfd_name);
172 res = bfd_alloc (abfd, len + 1);
173
174 if (res == NULL)
175 return;
176 strcpy (res, sec->bfd_name);
177 *name = res;
178 *flags = sec->flags;
179 return;
180 }
181 }
182 }
183 }
184
185 len = strlen (section->segname) + 1
186 + strlen (section->sectname) + 1;
187
188 /* Put "LC_SEGMENT." prefix if the segment name is weird (ie doesn't start
189 with an underscore. */
190 if (section->segname[0] != '_')
191 {
192 static const char seg_pfx[] = "LC_SEGMENT.";
193
194 pfx = seg_pfx;
195 len += sizeof (seg_pfx) - 1;
196 }
197
198 res = bfd_alloc (abfd, len);
199 if (res == NULL)
200 return;
201 snprintf (res, len, "%s%s.%s", pfx, section->segname, section->sectname);
202 *name = res;
203 }
204
205 /* Convert a bfd section name to a Mach-O segment + section name. */
206
207 static void
208 bfd_mach_o_convert_section_name_to_mach_o (bfd *abfd ATTRIBUTE_UNUSED,
209 asection *sect,
210 bfd_mach_o_section *section)
211 {
212 const struct mach_o_segment_name_xlat *seg;
213 const char *name = bfd_get_section_name (abfd, sect);
214 const char *dot;
215 unsigned int len;
216 unsigned int seglen;
217 unsigned int seclen;
218
219 /* List of well known names. They all start with a dot. */
220 if (name[0] == '.')
221 for (seg = segsec_names_xlat; seg->segname; seg++)
222 {
223 const struct mach_o_section_name_xlat *sec;
224
225 for (sec = seg->sections; sec->mach_o_name; sec++)
226 {
227 if (strcmp (sec->bfd_name, name) == 0)
228 {
229 strcpy (section->segname, seg->segname);
230 strcpy (section->sectname, sec->mach_o_name);
231 return;
232 }
233 }
234 }
235
236 /* Strip LC_SEGMENT. prefix. */
237 if (strncmp (name, "LC_SEGMENT.", 11) == 0)
238 name += 11;
239
240 /* Find a dot. */
241 dot = strchr (name, '.');
242 len = strlen (name);
243
244 /* Try to split name into segment and section names. */
245 if (dot && dot != name)
246 {
247 seglen = dot - name;
248 seclen = len - (dot + 1 - name);
249
250 if (seglen < 16 && seclen < 16)
251 {
252 memcpy (section->segname, name, seglen);
253 section->segname[seglen] = 0;
254 memcpy (section->sectname, dot + 1, seclen);
255 section->sectname[seclen] = 0;
256 return;
257 }
258 }
259
260 if (len > 16)
261 len = 16;
262 memcpy (section->segname, name, len);
263 section->segname[len] = 0;
264 memcpy (section->sectname, name, len);
265 section->sectname[len] = 0;
266 }
267
268 /* Return the size of an entry for section SEC.
269 Must be called only for symbol pointer section and symbol stubs
270 sections. */
271
272 static unsigned int
273 bfd_mach_o_section_get_entry_size (bfd *abfd, bfd_mach_o_section *sec)
274 {
275 switch (sec->flags & BFD_MACH_O_SECTION_TYPE_MASK)
276 {
277 case BFD_MACH_O_S_NON_LAZY_SYMBOL_POINTERS:
278 case BFD_MACH_O_S_LAZY_SYMBOL_POINTERS:
279 return bfd_mach_o_wide_p (abfd) ? 8 : 4;
280 case BFD_MACH_O_S_SYMBOL_STUBS:
281 return sec->reserved2;
282 default:
283 BFD_FAIL ();
284 return 0;
285 }
286 }
287
288 /* Return the number of indirect symbols for a section.
289 Must be called only for symbol pointer section and symbol stubs
290 sections. */
291
292 static unsigned int
293 bfd_mach_o_section_get_nbr_indirect (bfd *abfd, bfd_mach_o_section *sec)
294 {
295 unsigned int elsz;
296
297 elsz = bfd_mach_o_section_get_entry_size (abfd, sec);
298 if (elsz == 0)
299 return 0;
300 else
301 return sec->size / elsz;
302 }
303
304
305 /* Copy any private info we understand from the input symbol
306 to the output symbol. */
307
308 bfd_boolean
309 bfd_mach_o_bfd_copy_private_symbol_data (bfd *ibfd ATTRIBUTE_UNUSED,
310 asymbol *isymbol ATTRIBUTE_UNUSED,
311 bfd *obfd ATTRIBUTE_UNUSED,
312 asymbol *osymbol ATTRIBUTE_UNUSED)
313 {
314 return TRUE;
315 }
316
317 /* Copy any private info we understand from the input section
318 to the output section. */
319
320 bfd_boolean
321 bfd_mach_o_bfd_copy_private_section_data (bfd *ibfd ATTRIBUTE_UNUSED,
322 asection *isection ATTRIBUTE_UNUSED,
323 bfd *obfd ATTRIBUTE_UNUSED,
324 asection *osection ATTRIBUTE_UNUSED)
325 {
326 return TRUE;
327 }
328
329 /* Copy any private info we understand from the input bfd
330 to the output bfd. */
331
332 bfd_boolean
333 bfd_mach_o_bfd_copy_private_bfd_data (bfd *ibfd, bfd *obfd)
334 {
335 if (bfd_get_flavour (ibfd) != bfd_target_mach_o_flavour
336 || bfd_get_flavour (obfd) != bfd_target_mach_o_flavour)
337 return TRUE;
338
339 BFD_ASSERT (bfd_mach_o_valid (ibfd));
340 BFD_ASSERT (bfd_mach_o_valid (obfd));
341
342 /* FIXME: copy commands. */
343
344 return TRUE;
345 }
346
347 /* Count the total number of symbols. */
348
349 static long
350 bfd_mach_o_count_symbols (bfd *abfd)
351 {
352 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
353
354 if (mdata->symtab == NULL)
355 return 0;
356 return mdata->symtab->nsyms;
357 }
358
359 long
360 bfd_mach_o_get_symtab_upper_bound (bfd *abfd)
361 {
362 long nsyms = bfd_mach_o_count_symbols (abfd);
363
364 return ((nsyms + 1) * sizeof (asymbol *));
365 }
366
367 long
368 bfd_mach_o_canonicalize_symtab (bfd *abfd, asymbol **alocation)
369 {
370 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
371 long nsyms = bfd_mach_o_count_symbols (abfd);
372 bfd_mach_o_symtab_command *sym = mdata->symtab;
373 unsigned long j;
374
375 if (nsyms < 0)
376 return nsyms;
377
378 if (bfd_mach_o_read_symtab_symbols (abfd) != 0)
379 {
380 fprintf (stderr,
381 "bfd_mach_o_canonicalize_symtab: unable to load symbols\n");
382 return 0;
383 }
384
385 BFD_ASSERT (sym->symbols != NULL);
386
387 for (j = 0; j < sym->nsyms; j++)
388 alocation[j] = &sym->symbols[j].symbol;
389
390 alocation[j] = NULL;
391
392 return nsyms;
393 }
394
395 long
396 bfd_mach_o_get_synthetic_symtab (bfd *abfd,
397 long symcount ATTRIBUTE_UNUSED,
398 asymbol **syms ATTRIBUTE_UNUSED,
399 long dynsymcount ATTRIBUTE_UNUSED,
400 asymbol **dynsyms ATTRIBUTE_UNUSED,
401 asymbol **ret)
402 {
403 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
404 bfd_mach_o_dysymtab_command *dysymtab = mdata->dysymtab;
405 bfd_mach_o_symtab_command *symtab = mdata->symtab;
406 asymbol *s;
407 unsigned long count, i, j, n;
408 size_t size;
409 char *names;
410 char *nul_name;
411
412 *ret = NULL;
413
414 if (dysymtab == NULL || symtab == NULL || symtab->symbols == NULL)
415 return 0;
416
417 if (dysymtab->nindirectsyms == 0)
418 return 0;
419
420 count = dysymtab->nindirectsyms;
421 size = count * sizeof (asymbol) + 1;
422
423 for (j = 0; j < count; j++)
424 {
425 unsigned int isym = dysymtab->indirect_syms[j];
426
427 if (isym < symtab->nsyms && symtab->symbols[isym].symbol.name)
428 size += strlen (symtab->symbols[isym].symbol.name) + sizeof ("$stub");
429 }
430
431 s = *ret = (asymbol *) bfd_malloc (size);
432 if (s == NULL)
433 return -1;
434 names = (char *) (s + count);
435 nul_name = names;
436 *names++ = 0;
437
438 n = 0;
439 for (i = 0; i < mdata->nsects; i++)
440 {
441 bfd_mach_o_section *sec = mdata->sections[i];
442 unsigned int first, last;
443 bfd_vma addr;
444 bfd_vma entry_size;
445
446 switch (sec->flags & BFD_MACH_O_SECTION_TYPE_MASK)
447 {
448 case BFD_MACH_O_S_NON_LAZY_SYMBOL_POINTERS:
449 case BFD_MACH_O_S_LAZY_SYMBOL_POINTERS:
450 case BFD_MACH_O_S_SYMBOL_STUBS:
451 first = sec->reserved1;
452 last = first + bfd_mach_o_section_get_nbr_indirect (abfd, sec);
453 addr = sec->addr;
454 entry_size = bfd_mach_o_section_get_entry_size (abfd, sec);
455 for (j = first; j < last; j++)
456 {
457 unsigned int isym = dysymtab->indirect_syms[j];
458
459 s->flags = BSF_GLOBAL | BSF_SYNTHETIC;
460 s->section = sec->bfdsection;
461 s->value = addr - sec->addr;
462 s->udata.p = NULL;
463
464 if (isym < symtab->nsyms
465 && symtab->symbols[isym].symbol.name)
466 {
467 const char *sym = symtab->symbols[isym].symbol.name;
468 size_t len;
469
470 s->name = names;
471 len = strlen (sym);
472 memcpy (names, sym, len);
473 names += len;
474 memcpy (names, "$stub", sizeof ("$stub"));
475 names += sizeof ("$stub");
476 }
477 else
478 s->name = nul_name;
479
480 addr += entry_size;
481 s++;
482 n++;
483 }
484 break;
485 default:
486 break;
487 }
488 }
489
490 return n;
491 }
492
493 void
494 bfd_mach_o_get_symbol_info (bfd *abfd ATTRIBUTE_UNUSED,
495 asymbol *symbol,
496 symbol_info *ret)
497 {
498 bfd_symbol_info (symbol, ret);
499 }
500
501 void
502 bfd_mach_o_print_symbol (bfd *abfd,
503 void * afile,
504 asymbol *symbol,
505 bfd_print_symbol_type how)
506 {
507 FILE *file = (FILE *) afile;
508 const char *name;
509 bfd_mach_o_asymbol *asym = (bfd_mach_o_asymbol *)symbol;
510
511 switch (how)
512 {
513 case bfd_print_symbol_name:
514 fprintf (file, "%s", symbol->name);
515 break;
516 default:
517 bfd_print_symbol_vandf (abfd, (void *) file, symbol);
518 if (asym->n_type & BFD_MACH_O_N_STAB)
519 name = bfd_get_stab_name (asym->n_type);
520 else
521 switch (asym->n_type & BFD_MACH_O_N_TYPE)
522 {
523 case BFD_MACH_O_N_UNDF:
524 name = "UND";
525 break;
526 case BFD_MACH_O_N_ABS:
527 name = "ABS";
528 break;
529 case BFD_MACH_O_N_INDR:
530 name = "INDR";
531 break;
532 case BFD_MACH_O_N_PBUD:
533 name = "PBUD";
534 break;
535 case BFD_MACH_O_N_SECT:
536 name = "SECT";
537 break;
538 default:
539 name = "???";
540 break;
541 }
542 if (name == NULL)
543 name = "";
544 fprintf (file, " %02x %-6s %02x %04x",
545 asym->n_type, name, asym->n_sect, asym->n_desc);
546 if ((asym->n_type & BFD_MACH_O_N_STAB) == 0
547 && (asym->n_type & BFD_MACH_O_N_TYPE) == BFD_MACH_O_N_SECT)
548 fprintf (file, " %-5s", symbol->section->name);
549 fprintf (file, " %s", symbol->name);
550 }
551 }
552
553 static void
554 bfd_mach_o_convert_architecture (bfd_mach_o_cpu_type mtype,
555 bfd_mach_o_cpu_subtype msubtype ATTRIBUTE_UNUSED,
556 enum bfd_architecture *type,
557 unsigned long *subtype)
558 {
559 *subtype = bfd_arch_unknown;
560
561 switch (mtype)
562 {
563 case BFD_MACH_O_CPU_TYPE_VAX: *type = bfd_arch_vax; break;
564 case BFD_MACH_O_CPU_TYPE_MC680x0: *type = bfd_arch_m68k; break;
565 case BFD_MACH_O_CPU_TYPE_I386:
566 *type = bfd_arch_i386;
567 *subtype = bfd_mach_i386_i386;
568 break;
569 case BFD_MACH_O_CPU_TYPE_X86_64:
570 *type = bfd_arch_i386;
571 *subtype = bfd_mach_x86_64;
572 break;
573 case BFD_MACH_O_CPU_TYPE_MIPS: *type = bfd_arch_mips; break;
574 case BFD_MACH_O_CPU_TYPE_MC98000: *type = bfd_arch_m98k; break;
575 case BFD_MACH_O_CPU_TYPE_HPPA: *type = bfd_arch_hppa; break;
576 case BFD_MACH_O_CPU_TYPE_ARM: *type = bfd_arch_arm; break;
577 case BFD_MACH_O_CPU_TYPE_MC88000: *type = bfd_arch_m88k; break;
578 case BFD_MACH_O_CPU_TYPE_SPARC:
579 *type = bfd_arch_sparc;
580 *subtype = bfd_mach_sparc;
581 break;
582 case BFD_MACH_O_CPU_TYPE_I860: *type = bfd_arch_i860; break;
583 case BFD_MACH_O_CPU_TYPE_ALPHA: *type = bfd_arch_alpha; break;
584 case BFD_MACH_O_CPU_TYPE_POWERPC:
585 *type = bfd_arch_powerpc;
586 *subtype = bfd_mach_ppc;
587 break;
588 case BFD_MACH_O_CPU_TYPE_POWERPC_64:
589 *type = bfd_arch_powerpc;
590 *subtype = bfd_mach_ppc64;
591 break;
592 default:
593 *type = bfd_arch_unknown;
594 break;
595 }
596 }
597
598 static bfd_boolean
599 bfd_mach_o_write_header (bfd *abfd, bfd_mach_o_header *header)
600 {
601 unsigned char buf[32];
602 unsigned int size;
603
604 size = mach_o_wide_p (header) ?
605 BFD_MACH_O_HEADER_64_SIZE : BFD_MACH_O_HEADER_SIZE;
606
607 bfd_h_put_32 (abfd, header->magic, buf + 0);
608 bfd_h_put_32 (abfd, header->cputype, buf + 4);
609 bfd_h_put_32 (abfd, header->cpusubtype, buf + 8);
610 bfd_h_put_32 (abfd, header->filetype, buf + 12);
611 bfd_h_put_32 (abfd, header->ncmds, buf + 16);
612 bfd_h_put_32 (abfd, header->sizeofcmds, buf + 20);
613 bfd_h_put_32 (abfd, header->flags, buf + 24);
614
615 if (mach_o_wide_p (header))
616 bfd_h_put_32 (abfd, header->reserved, buf + 28);
617
618 if (bfd_seek (abfd, 0, SEEK_SET) != 0
619 || bfd_bwrite ((void *) buf, size, abfd) != size)
620 return FALSE;
621
622 return TRUE;
623 }
624
625 static int
626 bfd_mach_o_write_thread (bfd *abfd, bfd_mach_o_load_command *command)
627 {
628 bfd_mach_o_thread_command *cmd = &command->command.thread;
629 unsigned int i;
630 unsigned char buf[8];
631 unsigned int offset;
632 unsigned int nflavours;
633
634 BFD_ASSERT ((command->type == BFD_MACH_O_LC_THREAD)
635 || (command->type == BFD_MACH_O_LC_UNIXTHREAD));
636
637 offset = 8;
638 nflavours = 0;
639 for (i = 0; i < cmd->nflavours; i++)
640 {
641 BFD_ASSERT ((cmd->flavours[i].size % 4) == 0);
642 BFD_ASSERT (cmd->flavours[i].offset == (command->offset + offset + 8));
643
644 bfd_h_put_32 (abfd, cmd->flavours[i].flavour, buf);
645 bfd_h_put_32 (abfd, (cmd->flavours[i].size / 4), buf + 4);
646
647 if (bfd_seek (abfd, command->offset + offset, SEEK_SET) != 0
648 || bfd_bwrite ((void *) buf, 8, abfd) != 8)
649 return -1;
650
651 offset += cmd->flavours[i].size + 8;
652 }
653
654 return 0;
655 }
656
657 long
658 bfd_mach_o_get_reloc_upper_bound (bfd *abfd ATTRIBUTE_UNUSED,
659 asection *asect)
660 {
661 return (asect->reloc_count + 1) * sizeof (arelent *);
662 }
663
664 static int
665 bfd_mach_o_canonicalize_one_reloc (bfd *abfd, char *buf,
666 arelent *res, asymbol **syms)
667 {
668 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
669 bfd_mach_o_backend_data *bed = bfd_mach_o_get_backend_data (abfd);
670 bfd_mach_o_reloc_info reloc;
671 bfd_vma addr;
672 bfd_vma symnum;
673 asymbol **sym;
674
675 addr = bfd_get_32 (abfd, buf + 0);
676 symnum = bfd_get_32 (abfd, buf + 4);
677
678 if (addr & BFD_MACH_O_SR_SCATTERED)
679 {
680 unsigned int j;
681
682 /* Scattered relocation.
683 Extract section and offset from r_value. */
684 res->sym_ptr_ptr = NULL;
685 res->addend = 0;
686 for (j = 0; j < mdata->nsects; j++)
687 {
688 bfd_mach_o_section *sect = mdata->sections[j];
689 if (symnum >= sect->addr && symnum < sect->addr + sect->size)
690 {
691 res->sym_ptr_ptr = sect->bfdsection->symbol_ptr_ptr;
692 res->addend = symnum - sect->addr;
693 break;
694 }
695 }
696 res->address = BFD_MACH_O_GET_SR_ADDRESS (addr);
697 reloc.r_type = BFD_MACH_O_GET_SR_TYPE (addr);
698 reloc.r_length = BFD_MACH_O_GET_SR_LENGTH (addr);
699 reloc.r_pcrel = addr & BFD_MACH_O_SR_PCREL;
700 reloc.r_scattered = 1;
701 }
702 else
703 {
704 unsigned int num = BFD_MACH_O_GET_R_SYMBOLNUM (symnum);
705 res->addend = 0;
706 res->address = addr;
707 if (symnum & BFD_MACH_O_R_EXTERN)
708 {
709 sym = syms + num;
710 reloc.r_extern = 1;
711 }
712 else
713 {
714 BFD_ASSERT (num != 0);
715 BFD_ASSERT (num <= mdata->nsects);
716 sym = mdata->sections[num - 1]->bfdsection->symbol_ptr_ptr;
717 reloc.r_extern = 0;
718 }
719 res->sym_ptr_ptr = sym;
720 reloc.r_type = BFD_MACH_O_GET_R_TYPE (symnum);
721 reloc.r_length = BFD_MACH_O_GET_R_LENGTH (symnum);
722 reloc.r_pcrel = (symnum & BFD_MACH_O_R_PCREL) ? 1 : 0;
723 reloc.r_scattered = 0;
724 }
725
726 if (!(*bed->_bfd_mach_o_swap_reloc_in)(res, &reloc))
727 return -1;
728 return 0;
729 }
730
731 static int
732 bfd_mach_o_canonicalize_relocs (bfd *abfd, unsigned long filepos,
733 unsigned long count,
734 arelent *res, asymbol **syms)
735 {
736 unsigned long i;
737 char *native_relocs;
738 bfd_size_type native_size;
739
740 /* Allocate and read relocs. */
741 native_size = count * BFD_MACH_O_RELENT_SIZE;
742 native_relocs = bfd_malloc (native_size);
743 if (native_relocs == NULL)
744 return -1;
745
746 if (bfd_seek (abfd, filepos, SEEK_SET) != 0
747 || bfd_bread (native_relocs, native_size, abfd) != native_size)
748 goto err;
749
750 for (i = 0; i < count; i++)
751 {
752 char *buf = native_relocs + BFD_MACH_O_RELENT_SIZE * i;
753
754 if (bfd_mach_o_canonicalize_one_reloc (abfd, buf, &res[i], syms) < 0)
755 goto err;
756 }
757 free (native_relocs);
758 return i;
759 err:
760 free (native_relocs);
761 return -1;
762 }
763
764 long
765 bfd_mach_o_canonicalize_reloc (bfd *abfd, asection *asect,
766 arelent **rels, asymbol **syms)
767 {
768 bfd_mach_o_backend_data *bed = bfd_mach_o_get_backend_data (abfd);
769 unsigned long i;
770 arelent *res;
771
772 if (asect->reloc_count == 0)
773 return 0;
774
775 /* No need to go further if we don't know how to read relocs. */
776 if (bed->_bfd_mach_o_swap_reloc_in == NULL)
777 return 0;
778
779 res = bfd_malloc (asect->reloc_count * sizeof (arelent));
780 if (res == NULL)
781 return -1;
782
783 if (bfd_mach_o_canonicalize_relocs (abfd, asect->rel_filepos,
784 asect->reloc_count, res, syms) < 0)
785 {
786 free (res);
787 return -1;
788 }
789
790 for (i = 0; i < asect->reloc_count; i++)
791 rels[i] = &res[i];
792 rels[i] = NULL;
793 asect->relocation = res;
794
795 return i;
796 }
797
798 long
799 bfd_mach_o_get_dynamic_reloc_upper_bound (bfd *abfd)
800 {
801 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
802
803 if (mdata->dysymtab == NULL)
804 return 1;
805 return (mdata->dysymtab->nextrel + mdata->dysymtab->nlocrel)
806 * sizeof (arelent *);
807 }
808
809 long
810 bfd_mach_o_canonicalize_dynamic_reloc (bfd *abfd, arelent **rels,
811 struct bfd_symbol **syms)
812 {
813 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
814 bfd_mach_o_dysymtab_command *dysymtab = mdata->dysymtab;
815 bfd_mach_o_backend_data *bed = bfd_mach_o_get_backend_data (abfd);
816 unsigned long i;
817 arelent *res;
818
819 if (dysymtab == NULL)
820 return 0;
821 if (dysymtab->nextrel == 0 && dysymtab->nlocrel == 0)
822 return 0;
823
824 /* No need to go further if we don't know how to read relocs. */
825 if (bed->_bfd_mach_o_swap_reloc_in == NULL)
826 return 0;
827
828 res = bfd_malloc ((dysymtab->nextrel + dysymtab->nlocrel) * sizeof (arelent));
829 if (res == NULL)
830 return -1;
831
832 if (bfd_mach_o_canonicalize_relocs (abfd, dysymtab->extreloff,
833 dysymtab->nextrel, res, syms) < 0)
834 {
835 free (res);
836 return -1;
837 }
838
839 if (bfd_mach_o_canonicalize_relocs (abfd, dysymtab->locreloff,
840 dysymtab->nlocrel,
841 res + dysymtab->nextrel, syms) < 0)
842 {
843 free (res);
844 return -1;
845 }
846
847 for (i = 0; i < dysymtab->nextrel + dysymtab->nlocrel; i++)
848 rels[i] = &res[i];
849 rels[i] = NULL;
850 return i;
851 }
852
853 static bfd_boolean
854 bfd_mach_o_write_relocs (bfd *abfd, bfd_mach_o_section *section)
855 {
856 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
857 unsigned int i;
858 arelent **entries;
859 asection *sec;
860 bfd_mach_o_backend_data *bed = bfd_mach_o_get_backend_data (abfd);
861
862 sec = section->bfdsection;
863 if (sec->reloc_count == 0)
864 return TRUE;
865
866 if (bed->_bfd_mach_o_swap_reloc_out == NULL)
867 return TRUE;
868
869 /* Allocate relocation room. */
870 mdata->filelen = FILE_ALIGN(mdata->filelen, 2);
871 section->nreloc = sec->reloc_count;
872 sec->rel_filepos = mdata->filelen;
873 section->reloff = sec->rel_filepos;
874 mdata->filelen += sec->reloc_count * BFD_MACH_O_RELENT_SIZE;
875
876 if (bfd_seek (abfd, section->reloff, SEEK_SET) != 0)
877 return FALSE;
878
879 /* Convert and write. */
880 entries = section->bfdsection->orelocation;
881 for (i = 0; i < section->nreloc; i++)
882 {
883 arelent *rel = entries[i];
884 char buf[8];
885 bfd_mach_o_reloc_info info, *pinfo = &info;
886
887 /* Convert relocation to an intermediate representation. */
888 if (!(*bed->_bfd_mach_o_swap_reloc_out) (rel, pinfo))
889 return FALSE;
890
891 /* Lower the relocation info. */
892 if (pinfo->r_scattered)
893 {
894 unsigned long v;
895
896 v = BFD_MACH_O_SR_SCATTERED
897 | (pinfo->r_pcrel ? BFD_MACH_O_SR_PCREL : 0)
898 | BFD_MACH_O_SET_SR_LENGTH(pinfo->r_length)
899 | BFD_MACH_O_SET_SR_TYPE(pinfo->r_type)
900 | BFD_MACH_O_SET_SR_ADDRESS(pinfo->r_address);
901 bfd_put_32 (abfd, v, buf);
902 bfd_put_32 (abfd, pinfo->r_value, buf + 4);
903 }
904 else
905 {
906 unsigned long v;
907
908 bfd_put_32 (abfd, pinfo->r_address, buf);
909 v = BFD_MACH_O_SET_R_SYMBOLNUM (pinfo->r_value)
910 | (pinfo->r_pcrel ? BFD_MACH_O_R_PCREL : 0)
911 | BFD_MACH_O_SET_R_LENGTH (pinfo->r_length)
912 | (pinfo->r_extern ? BFD_MACH_O_R_EXTERN : 0)
913 | BFD_MACH_O_SET_R_TYPE (pinfo->r_type);
914 bfd_put_32 (abfd, v, buf + 4);
915 }
916
917 if (bfd_bwrite ((void *) buf, BFD_MACH_O_RELENT_SIZE, abfd)
918 != BFD_MACH_O_RELENT_SIZE)
919 return FALSE;
920 }
921 return TRUE;
922 }
923
924 static int
925 bfd_mach_o_write_section_32 (bfd *abfd, bfd_mach_o_section *section)
926 {
927 unsigned char buf[BFD_MACH_O_SECTION_SIZE];
928
929 memcpy (buf, section->sectname, 16);
930 memcpy (buf + 16, section->segname, 16);
931 bfd_h_put_32 (abfd, section->addr, buf + 32);
932 bfd_h_put_32 (abfd, section->size, buf + 36);
933 bfd_h_put_32 (abfd, section->offset, buf + 40);
934 bfd_h_put_32 (abfd, section->align, buf + 44);
935 bfd_h_put_32 (abfd, section->reloff, buf + 48);
936 bfd_h_put_32 (abfd, section->nreloc, buf + 52);
937 bfd_h_put_32 (abfd, section->flags, buf + 56);
938 bfd_h_put_32 (abfd, section->reserved1, buf + 60);
939 bfd_h_put_32 (abfd, section->reserved2, buf + 64);
940
941 if (bfd_bwrite ((void *) buf, BFD_MACH_O_SECTION_SIZE, abfd)
942 != BFD_MACH_O_SECTION_SIZE)
943 return -1;
944
945 return 0;
946 }
947
948 static int
949 bfd_mach_o_write_section_64 (bfd *abfd, bfd_mach_o_section *section)
950 {
951 unsigned char buf[BFD_MACH_O_SECTION_64_SIZE];
952
953 memcpy (buf, section->sectname, 16);
954 memcpy (buf + 16, section->segname, 16);
955 bfd_h_put_64 (abfd, section->addr, buf + 32);
956 bfd_h_put_64 (abfd, section->size, buf + 40);
957 bfd_h_put_32 (abfd, section->offset, buf + 48);
958 bfd_h_put_32 (abfd, section->align, buf + 52);
959 bfd_h_put_32 (abfd, section->reloff, buf + 56);
960 bfd_h_put_32 (abfd, section->nreloc, buf + 60);
961 bfd_h_put_32 (abfd, section->flags, buf + 64);
962 bfd_h_put_32 (abfd, section->reserved1, buf + 68);
963 bfd_h_put_32 (abfd, section->reserved2, buf + 72);
964 bfd_h_put_32 (abfd, section->reserved3, buf + 76);
965
966 if (bfd_bwrite ((void *) buf, BFD_MACH_O_SECTION_64_SIZE, abfd)
967 != BFD_MACH_O_SECTION_64_SIZE)
968 return -1;
969
970 return 0;
971 }
972
973 static int
974 bfd_mach_o_write_segment_32 (bfd *abfd, bfd_mach_o_load_command *command)
975 {
976 unsigned char buf[BFD_MACH_O_LC_SEGMENT_SIZE];
977 bfd_mach_o_segment_command *seg = &command->command.segment;
978 unsigned long i;
979
980 BFD_ASSERT (command->type == BFD_MACH_O_LC_SEGMENT);
981
982 for (i = 0; i < seg->nsects; i++)
983 if (!bfd_mach_o_write_relocs (abfd, &seg->sections[i]))
984 return -1;
985
986 memcpy (buf, seg->segname, 16);
987 bfd_h_put_32 (abfd, seg->vmaddr, buf + 16);
988 bfd_h_put_32 (abfd, seg->vmsize, buf + 20);
989 bfd_h_put_32 (abfd, seg->fileoff, buf + 24);
990 bfd_h_put_32 (abfd, seg->filesize, buf + 28);
991 bfd_h_put_32 (abfd, seg->maxprot, buf + 32);
992 bfd_h_put_32 (abfd, seg->initprot, buf + 36);
993 bfd_h_put_32 (abfd, seg->nsects, buf + 40);
994 bfd_h_put_32 (abfd, seg->flags, buf + 44);
995
996 if (bfd_seek (abfd, command->offset + 8, SEEK_SET) != 0
997 || (bfd_bwrite ((void *) buf, BFD_MACH_O_LC_SEGMENT_SIZE - 8, abfd)
998 != BFD_MACH_O_LC_SEGMENT_SIZE - 8))
999 return -1;
1000
1001 for (i = 0; i < seg->nsects; i++)
1002 if (bfd_mach_o_write_section_32 (abfd, &seg->sections[i]))
1003 return -1;
1004
1005 return 0;
1006 }
1007
1008 static int
1009 bfd_mach_o_write_segment_64 (bfd *abfd, bfd_mach_o_load_command *command)
1010 {
1011 unsigned char buf[BFD_MACH_O_LC_SEGMENT_64_SIZE];
1012 bfd_mach_o_segment_command *seg = &command->command.segment;
1013 unsigned long i;
1014
1015 BFD_ASSERT (command->type == BFD_MACH_O_LC_SEGMENT_64);
1016
1017 for (i = 0; i < seg->nsects; i++)
1018 if (!bfd_mach_o_write_relocs (abfd, &seg->sections[i]))
1019 return -1;
1020
1021 memcpy (buf, seg->segname, 16);
1022 bfd_h_put_64 (abfd, seg->vmaddr, buf + 16);
1023 bfd_h_put_64 (abfd, seg->vmsize, buf + 24);
1024 bfd_h_put_64 (abfd, seg->fileoff, buf + 32);
1025 bfd_h_put_64 (abfd, seg->filesize, buf + 40);
1026 bfd_h_put_32 (abfd, seg->maxprot, buf + 48);
1027 bfd_h_put_32 (abfd, seg->initprot, buf + 52);
1028 bfd_h_put_32 (abfd, seg->nsects, buf + 56);
1029 bfd_h_put_32 (abfd, seg->flags, buf + 60);
1030
1031 if (bfd_seek (abfd, command->offset + 8, SEEK_SET) != 0
1032 || (bfd_bwrite ((void *) buf, BFD_MACH_O_LC_SEGMENT_64_SIZE - 8, abfd)
1033 != BFD_MACH_O_LC_SEGMENT_64_SIZE - 8))
1034 return -1;
1035
1036 for (i = 0; i < seg->nsects; i++)
1037 if (bfd_mach_o_write_section_64 (abfd, &seg->sections[i]))
1038 return -1;
1039
1040 return 0;
1041 }
1042
1043 static bfd_boolean
1044 bfd_mach_o_write_symtab (bfd *abfd, bfd_mach_o_load_command *command)
1045 {
1046 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
1047 bfd_mach_o_symtab_command *sym = &command->command.symtab;
1048 unsigned char buf[16];
1049 unsigned long i;
1050 unsigned int wide = bfd_mach_o_wide_p (abfd);
1051 unsigned int symlen = wide ? BFD_MACH_O_NLIST_64_SIZE : BFD_MACH_O_NLIST_SIZE;
1052 struct bfd_strtab_hash *strtab;
1053 asymbol **symbols = bfd_get_outsymbols (abfd);
1054
1055 BFD_ASSERT (command->type == BFD_MACH_O_LC_SYMTAB);
1056
1057 /* Write the symbols first. */
1058 mdata->filelen = FILE_ALIGN(mdata->filelen, wide ? 3 : 2);
1059 sym->symoff = mdata->filelen;
1060 if (bfd_seek (abfd, sym->symoff, SEEK_SET) != 0)
1061 return FALSE;
1062
1063 sym->nsyms = bfd_get_symcount (abfd);
1064 mdata->filelen += sym->nsyms * symlen;
1065
1066 strtab = _bfd_stringtab_init ();
1067 if (strtab == NULL)
1068 return FALSE;
1069
1070 for (i = 0; i < sym->nsyms; i++)
1071 {
1072 bfd_size_type str_index;
1073 bfd_mach_o_asymbol *s = (bfd_mach_o_asymbol *)symbols[i];
1074
1075 /* Compute name index. */
1076 /* An index of 0 always means the empty string. */
1077 if (s->symbol.name == 0 || s->symbol.name[0] == '\0')
1078 str_index = 0;
1079 else
1080 {
1081 str_index = _bfd_stringtab_add (strtab, s->symbol.name, TRUE, FALSE);
1082 if (str_index == (bfd_size_type) -1)
1083 goto err;
1084 }
1085 bfd_h_put_32 (abfd, str_index, buf);
1086 bfd_h_put_8 (abfd, s->n_type, buf + 4);
1087 bfd_h_put_8 (abfd, s->n_sect, buf + 5);
1088 bfd_h_put_16 (abfd, s->n_desc, buf + 6);
1089 if (wide)
1090 bfd_h_put_64 (abfd, s->symbol.section->vma + s->symbol.value, buf + 8);
1091 else
1092 bfd_h_put_32 (abfd, s->symbol.section->vma + s->symbol.value, buf + 8);
1093
1094 if (bfd_bwrite ((void *) buf, symlen, abfd) != symlen)
1095 goto err;
1096 }
1097 sym->strsize = _bfd_stringtab_size (strtab);
1098 sym->stroff = mdata->filelen;
1099 mdata->filelen += sym->strsize;
1100
1101 if (_bfd_stringtab_emit (abfd, strtab) != TRUE)
1102 goto err;
1103 _bfd_stringtab_free (strtab);
1104
1105 /* The command. */
1106 bfd_h_put_32 (abfd, sym->symoff, buf);
1107 bfd_h_put_32 (abfd, sym->nsyms, buf + 4);
1108 bfd_h_put_32 (abfd, sym->stroff, buf + 8);
1109 bfd_h_put_32 (abfd, sym->strsize, buf + 12);
1110
1111 if (bfd_seek (abfd, command->offset + 8, SEEK_SET) != 0
1112 || bfd_bwrite ((void *) buf, 16, abfd) != 16)
1113 return FALSE;
1114
1115 return TRUE;
1116
1117 err:
1118 _bfd_stringtab_free (strtab);
1119 return FALSE;
1120 }
1121
1122 /* Process the symbols and generate Mach-O specific fields.
1123 Number them. */
1124
1125 static bfd_boolean
1126 bfd_mach_o_mangle_symbols (bfd *abfd)
1127 {
1128 unsigned long i;
1129 asymbol **symbols = bfd_get_outsymbols (abfd);
1130
1131 for (i = 0; i < bfd_get_symcount (abfd); i++)
1132 {
1133 bfd_mach_o_asymbol *s = (bfd_mach_o_asymbol *)symbols[i];
1134
1135 if (s->n_type == BFD_MACH_O_N_UNDF && !(s->symbol.flags & BSF_DEBUGGING))
1136 {
1137 /* As genuine Mach-O symbols type shouldn't be N_UNDF (undefined
1138 symbols should be N_UNDEF | N_EXT), we suppose the back-end
1139 values haven't been set. */
1140 if (s->symbol.section == bfd_abs_section_ptr)
1141 s->n_type = BFD_MACH_O_N_ABS;
1142 else if (s->symbol.section == bfd_und_section_ptr)
1143 {
1144 s->n_type = BFD_MACH_O_N_UNDF;
1145 if (s->symbol.flags & BSF_WEAK)
1146 s->n_desc |= BFD_MACH_O_N_WEAK_REF;
1147 }
1148 else if (s->symbol.section == bfd_com_section_ptr)
1149 s->n_type = BFD_MACH_O_N_UNDF | BFD_MACH_O_N_EXT;
1150 else
1151 s->n_type = BFD_MACH_O_N_SECT;
1152
1153 if (s->symbol.flags & BSF_GLOBAL)
1154 s->n_type |= BFD_MACH_O_N_EXT;
1155 }
1156
1157 /* Compute section index. */
1158 if (s->symbol.section != bfd_abs_section_ptr
1159 && s->symbol.section != bfd_und_section_ptr
1160 && s->symbol.section != bfd_com_section_ptr)
1161 s->n_sect = s->symbol.section->target_index;
1162
1163 /* Number symbols. */
1164 s->symbol.udata.i = i;
1165 }
1166 return TRUE;
1167 }
1168
1169 bfd_boolean
1170 bfd_mach_o_write_contents (bfd *abfd)
1171 {
1172 unsigned int i;
1173 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
1174
1175 if (mdata->header.ncmds == 0)
1176 if (!bfd_mach_o_build_commands (abfd))
1177 return FALSE;
1178
1179 /* Now write header information. */
1180 if (mdata->header.filetype == 0)
1181 {
1182 if (abfd->flags & EXEC_P)
1183 mdata->header.filetype = BFD_MACH_O_MH_EXECUTE;
1184 else if (abfd->flags & DYNAMIC)
1185 mdata->header.filetype = BFD_MACH_O_MH_DYLIB;
1186 else
1187 mdata->header.filetype = BFD_MACH_O_MH_OBJECT;
1188 }
1189 if (!bfd_mach_o_write_header (abfd, &mdata->header))
1190 return FALSE;
1191
1192 /* Assign a number to each symbols. */
1193 if (!bfd_mach_o_mangle_symbols (abfd))
1194 return FALSE;
1195
1196 for (i = 0; i < mdata->header.ncmds; i++)
1197 {
1198 unsigned char buf[8];
1199 bfd_mach_o_load_command *cur = &mdata->commands[i];
1200 unsigned long typeflag;
1201
1202 typeflag = cur->type | (cur->type_required ? BFD_MACH_O_LC_REQ_DYLD : 0);
1203
1204 bfd_h_put_32 (abfd, typeflag, buf);
1205 bfd_h_put_32 (abfd, cur->len, buf + 4);
1206
1207 if (bfd_seek (abfd, cur->offset, SEEK_SET) != 0
1208 || bfd_bwrite ((void *) buf, 8, abfd) != 8)
1209 return FALSE;
1210
1211 switch (cur->type)
1212 {
1213 case BFD_MACH_O_LC_SEGMENT:
1214 if (bfd_mach_o_write_segment_32 (abfd, cur) != 0)
1215 return FALSE;
1216 break;
1217 case BFD_MACH_O_LC_SEGMENT_64:
1218 if (bfd_mach_o_write_segment_64 (abfd, cur) != 0)
1219 return FALSE;
1220 break;
1221 case BFD_MACH_O_LC_SYMTAB:
1222 if (!bfd_mach_o_write_symtab (abfd, cur))
1223 return FALSE;
1224 break;
1225 case BFD_MACH_O_LC_SYMSEG:
1226 break;
1227 case BFD_MACH_O_LC_THREAD:
1228 case BFD_MACH_O_LC_UNIXTHREAD:
1229 if (bfd_mach_o_write_thread (abfd, cur) != 0)
1230 return FALSE;
1231 break;
1232 case BFD_MACH_O_LC_LOADFVMLIB:
1233 case BFD_MACH_O_LC_IDFVMLIB:
1234 case BFD_MACH_O_LC_IDENT:
1235 case BFD_MACH_O_LC_FVMFILE:
1236 case BFD_MACH_O_LC_PREPAGE:
1237 case BFD_MACH_O_LC_DYSYMTAB:
1238 case BFD_MACH_O_LC_LOAD_DYLIB:
1239 case BFD_MACH_O_LC_LOAD_WEAK_DYLIB:
1240 case BFD_MACH_O_LC_ID_DYLIB:
1241 case BFD_MACH_O_LC_REEXPORT_DYLIB:
1242 case BFD_MACH_O_LC_LOAD_DYLINKER:
1243 case BFD_MACH_O_LC_ID_DYLINKER:
1244 case BFD_MACH_O_LC_PREBOUND_DYLIB:
1245 case BFD_MACH_O_LC_ROUTINES:
1246 case BFD_MACH_O_LC_SUB_FRAMEWORK:
1247 break;
1248 default:
1249 fprintf (stderr,
1250 "unable to write unknown load command 0x%lx\n",
1251 (unsigned long) cur->type);
1252 return FALSE;
1253 }
1254 }
1255
1256 return TRUE;
1257 }
1258
1259 /* Build Mach-O load commands from the sections. */
1260
1261 bfd_boolean
1262 bfd_mach_o_build_commands (bfd *abfd)
1263 {
1264 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
1265 unsigned int wide = mach_o_wide_p (&mdata->header);
1266 bfd_mach_o_segment_command *seg;
1267 bfd_mach_o_section *sections;
1268 asection *sec;
1269 bfd_mach_o_load_command *cmd;
1270 bfd_mach_o_load_command *symtab_cmd;
1271 int target_index;
1272
1273 /* Return now if commands are already built. */
1274 if (mdata->header.ncmds)
1275 return FALSE;
1276
1277 /* Very simple version: 1 command (segment) containing all sections. */
1278 mdata->header.ncmds = 2;
1279 mdata->commands = bfd_alloc (abfd, mdata->header.ncmds
1280 * sizeof (bfd_mach_o_load_command));
1281 if (mdata->commands == NULL)
1282 return FALSE;
1283 cmd = &mdata->commands[0];
1284 seg = &cmd->command.segment;
1285
1286 seg->nsects = bfd_count_sections (abfd);
1287 sections = bfd_alloc (abfd, seg->nsects * sizeof (bfd_mach_o_section));
1288 if (sections == NULL)
1289 return FALSE;
1290 seg->sections = sections;
1291
1292 /* Set segment command. */
1293 if (wide)
1294 {
1295 cmd->type = BFD_MACH_O_LC_SEGMENT_64;
1296 cmd->offset = BFD_MACH_O_HEADER_64_SIZE;
1297 cmd->len = BFD_MACH_O_LC_SEGMENT_64_SIZE
1298 + BFD_MACH_O_SECTION_64_SIZE * seg->nsects;
1299 }
1300 else
1301 {
1302 cmd->type = BFD_MACH_O_LC_SEGMENT;
1303 cmd->offset = BFD_MACH_O_HEADER_SIZE;
1304 cmd->len = BFD_MACH_O_LC_SEGMENT_SIZE
1305 + BFD_MACH_O_SECTION_SIZE * seg->nsects;
1306 }
1307 cmd->type_required = FALSE;
1308 mdata->header.sizeofcmds = cmd->len;
1309 mdata->filelen = cmd->offset + cmd->len;
1310
1311 /* Set symtab command. */
1312 symtab_cmd = &mdata->commands[1];
1313
1314 symtab_cmd->type = BFD_MACH_O_LC_SYMTAB;
1315 symtab_cmd->offset = cmd->offset + cmd->len;
1316 symtab_cmd->len = 6 * 4;
1317 symtab_cmd->type_required = FALSE;
1318
1319 mdata->header.sizeofcmds += symtab_cmd->len;
1320 mdata->filelen += symtab_cmd->len;
1321
1322 /* Fill segment command. */
1323 memset (seg->segname, 0, sizeof (seg->segname));
1324 seg->vmaddr = 0;
1325 seg->fileoff = mdata->filelen;
1326 seg->filesize = 0;
1327 seg->maxprot = BFD_MACH_O_PROT_READ | BFD_MACH_O_PROT_WRITE
1328 | BFD_MACH_O_PROT_EXECUTE;
1329 seg->initprot = seg->maxprot;
1330 seg->flags = 0;
1331
1332 /* Create Mach-O sections. */
1333 target_index = 0;
1334 for (sec = abfd->sections; sec; sec = sec->next)
1335 {
1336 sections->bfdsection = sec;
1337 bfd_mach_o_convert_section_name_to_mach_o (abfd, sec, sections);
1338 sections->addr = bfd_get_section_vma (abfd, sec);
1339 sections->size = bfd_get_section_size (sec);
1340 sections->align = bfd_get_section_alignment (abfd, sec);
1341
1342 if (sections->size != 0)
1343 {
1344 mdata->filelen = FILE_ALIGN (mdata->filelen, sections->align);
1345 sections->offset = mdata->filelen;
1346 }
1347 else
1348 sections->offset = 0;
1349 sections->reloff = 0;
1350 sections->nreloc = 0;
1351 sections->reserved1 = 0;
1352 sections->reserved2 = 0;
1353 sections->reserved3 = 0;
1354
1355 sec->filepos = sections->offset;
1356 sec->target_index = ++target_index;
1357
1358 mdata->filelen += sections->size;
1359 sections++;
1360 }
1361 seg->filesize = mdata->filelen - seg->fileoff;
1362 seg->vmsize = seg->filesize;
1363
1364 return TRUE;
1365 }
1366
1367 /* Set the contents of a section. */
1368
1369 bfd_boolean
1370 bfd_mach_o_set_section_contents (bfd *abfd,
1371 asection *section,
1372 const void * location,
1373 file_ptr offset,
1374 bfd_size_type count)
1375 {
1376 file_ptr pos;
1377
1378 /* This must be done first, because bfd_set_section_contents is
1379 going to set output_has_begun to TRUE. */
1380 if (! abfd->output_has_begun && ! bfd_mach_o_build_commands (abfd))
1381 return FALSE;
1382
1383 if (count == 0)
1384 return TRUE;
1385
1386 pos = section->filepos + offset;
1387 if (bfd_seek (abfd, pos, SEEK_SET) != 0
1388 || bfd_bwrite (location, count, abfd) != count)
1389 return FALSE;
1390
1391 return TRUE;
1392 }
1393
1394 int
1395 bfd_mach_o_sizeof_headers (bfd *a ATTRIBUTE_UNUSED,
1396 struct bfd_link_info *info ATTRIBUTE_UNUSED)
1397 {
1398 return 0;
1399 }
1400
1401 /* Make an empty symbol. This is required only because
1402 bfd_make_section_anyway wants to create a symbol for the section. */
1403
1404 asymbol *
1405 bfd_mach_o_make_empty_symbol (bfd *abfd)
1406 {
1407 asymbol *new_symbol;
1408
1409 new_symbol = bfd_zalloc (abfd, sizeof (bfd_mach_o_asymbol));
1410 if (new_symbol == NULL)
1411 return new_symbol;
1412 new_symbol->the_bfd = abfd;
1413 new_symbol->udata.i = 0;
1414 return new_symbol;
1415 }
1416
1417 static bfd_boolean
1418 bfd_mach_o_read_header (bfd *abfd, bfd_mach_o_header *header)
1419 {
1420 unsigned char buf[32];
1421 unsigned int size;
1422 bfd_vma (*get32) (const void *) = NULL;
1423
1424 /* Just read the magic number. */
1425 if (bfd_seek (abfd, 0, SEEK_SET) != 0
1426 || bfd_bread ((void *) buf, 4, abfd) != 4)
1427 return FALSE;
1428
1429 if (bfd_getb32 (buf) == BFD_MACH_O_MH_MAGIC)
1430 {
1431 header->byteorder = BFD_ENDIAN_BIG;
1432 header->magic = BFD_MACH_O_MH_MAGIC;
1433 header->version = 1;
1434 get32 = bfd_getb32;
1435 }
1436 else if (bfd_getl32 (buf) == BFD_MACH_O_MH_MAGIC)
1437 {
1438 header->byteorder = BFD_ENDIAN_LITTLE;
1439 header->magic = BFD_MACH_O_MH_MAGIC;
1440 header->version = 1;
1441 get32 = bfd_getl32;
1442 }
1443 else if (bfd_getb32 (buf) == BFD_MACH_O_MH_MAGIC_64)
1444 {
1445 header->byteorder = BFD_ENDIAN_BIG;
1446 header->magic = BFD_MACH_O_MH_MAGIC_64;
1447 header->version = 2;
1448 get32 = bfd_getb32;
1449 }
1450 else if (bfd_getl32 (buf) == BFD_MACH_O_MH_MAGIC_64)
1451 {
1452 header->byteorder = BFD_ENDIAN_LITTLE;
1453 header->magic = BFD_MACH_O_MH_MAGIC_64;
1454 header->version = 2;
1455 get32 = bfd_getl32;
1456 }
1457 else
1458 {
1459 header->byteorder = BFD_ENDIAN_UNKNOWN;
1460 return FALSE;
1461 }
1462
1463 /* Once the size of the header is known, read the full header. */
1464 size = mach_o_wide_p (header) ?
1465 BFD_MACH_O_HEADER_64_SIZE : BFD_MACH_O_HEADER_SIZE;
1466
1467 if (bfd_seek (abfd, 0, SEEK_SET) != 0
1468 || bfd_bread ((void *) buf, size, abfd) != size)
1469 return FALSE;
1470
1471 header->cputype = (*get32) (buf + 4);
1472 header->cpusubtype = (*get32) (buf + 8);
1473 header->filetype = (*get32) (buf + 12);
1474 header->ncmds = (*get32) (buf + 16);
1475 header->sizeofcmds = (*get32) (buf + 20);
1476 header->flags = (*get32) (buf + 24);
1477
1478 if (mach_o_wide_p (header))
1479 header->reserved = (*get32) (buf + 28);
1480
1481 return TRUE;
1482 }
1483
1484 static asection *
1485 bfd_mach_o_make_bfd_section (bfd *abfd, bfd_mach_o_section *section,
1486 unsigned long prot)
1487 {
1488 asection *bfdsec;
1489 char *sname;
1490 flagword flags;
1491
1492 bfd_mach_o_convert_section_name_to_bfd (abfd, section, &sname, &flags);
1493 if (sname == NULL)
1494 return NULL;
1495
1496 if (flags == SEC_NO_FLAGS)
1497 {
1498 /* Try to guess flags. */
1499 if (section->flags & BFD_MACH_O_S_ATTR_DEBUG)
1500 flags = SEC_DEBUGGING;
1501 else
1502 {
1503 flags = SEC_ALLOC;
1504 if ((section->flags & BFD_MACH_O_SECTION_TYPE_MASK)
1505 != BFD_MACH_O_S_ZEROFILL)
1506 {
1507 flags |= SEC_LOAD;
1508 if (prot & BFD_MACH_O_PROT_EXECUTE)
1509 flags |= SEC_CODE;
1510 if (prot & BFD_MACH_O_PROT_WRITE)
1511 flags |= SEC_DATA;
1512 else if (prot & BFD_MACH_O_PROT_READ)
1513 flags |= SEC_READONLY;
1514 }
1515 }
1516 }
1517 else
1518 {
1519 if ((flags & SEC_DEBUGGING) == 0)
1520 flags |= SEC_ALLOC;
1521 }
1522
1523 if (section->offset != 0)
1524 flags |= SEC_HAS_CONTENTS;
1525 if (section->nreloc != 0)
1526 flags |= SEC_RELOC;
1527
1528 bfdsec = bfd_make_section_anyway_with_flags (abfd, sname, flags);
1529 if (bfdsec == NULL)
1530 return NULL;
1531
1532 bfdsec->vma = section->addr;
1533 bfdsec->lma = section->addr;
1534 bfdsec->size = section->size;
1535 bfdsec->filepos = section->offset;
1536 bfdsec->alignment_power = section->align;
1537 bfdsec->segment_mark = 0;
1538 bfdsec->reloc_count = section->nreloc;
1539 bfdsec->rel_filepos = section->reloff;
1540
1541 return bfdsec;
1542 }
1543
1544 static int
1545 bfd_mach_o_read_section_32 (bfd *abfd,
1546 bfd_mach_o_section *section,
1547 unsigned int offset,
1548 unsigned long prot)
1549 {
1550 unsigned char buf[BFD_MACH_O_SECTION_SIZE];
1551
1552 if (bfd_seek (abfd, offset, SEEK_SET) != 0
1553 || (bfd_bread ((void *) buf, BFD_MACH_O_SECTION_SIZE, abfd)
1554 != BFD_MACH_O_SECTION_SIZE))
1555 return -1;
1556
1557 memcpy (section->sectname, buf, 16);
1558 section->sectname[16] = '\0';
1559 memcpy (section->segname, buf + 16, 16);
1560 section->segname[16] = '\0';
1561 section->addr = bfd_h_get_32 (abfd, buf + 32);
1562 section->size = bfd_h_get_32 (abfd, buf + 36);
1563 section->offset = bfd_h_get_32 (abfd, buf + 40);
1564 section->align = bfd_h_get_32 (abfd, buf + 44);
1565 section->reloff = bfd_h_get_32 (abfd, buf + 48);
1566 section->nreloc = bfd_h_get_32 (abfd, buf + 52);
1567 section->flags = bfd_h_get_32 (abfd, buf + 56);
1568 section->reserved1 = bfd_h_get_32 (abfd, buf + 60);
1569 section->reserved2 = bfd_h_get_32 (abfd, buf + 64);
1570 section->reserved3 = 0;
1571 section->bfdsection = bfd_mach_o_make_bfd_section (abfd, section, prot);
1572
1573 if (section->bfdsection == NULL)
1574 return -1;
1575
1576 return 0;
1577 }
1578
1579 static int
1580 bfd_mach_o_read_section_64 (bfd *abfd,
1581 bfd_mach_o_section *section,
1582 unsigned int offset,
1583 unsigned long prot)
1584 {
1585 unsigned char buf[BFD_MACH_O_SECTION_64_SIZE];
1586
1587 if (bfd_seek (abfd, offset, SEEK_SET) != 0
1588 || (bfd_bread ((void *) buf, BFD_MACH_O_SECTION_64_SIZE, abfd)
1589 != BFD_MACH_O_SECTION_64_SIZE))
1590 return -1;
1591
1592 memcpy (section->sectname, buf, 16);
1593 section->sectname[16] = '\0';
1594 memcpy (section->segname, buf + 16, 16);
1595 section->segname[16] = '\0';
1596 section->addr = bfd_h_get_64 (abfd, buf + 32);
1597 section->size = bfd_h_get_64 (abfd, buf + 40);
1598 section->offset = bfd_h_get_32 (abfd, buf + 48);
1599 section->align = bfd_h_get_32 (abfd, buf + 52);
1600 section->reloff = bfd_h_get_32 (abfd, buf + 56);
1601 section->nreloc = bfd_h_get_32 (abfd, buf + 60);
1602 section->flags = bfd_h_get_32 (abfd, buf + 64);
1603 section->reserved1 = bfd_h_get_32 (abfd, buf + 68);
1604 section->reserved2 = bfd_h_get_32 (abfd, buf + 72);
1605 section->reserved3 = bfd_h_get_32 (abfd, buf + 76);
1606 section->bfdsection = bfd_mach_o_make_bfd_section (abfd, section, prot);
1607
1608 if (section->bfdsection == NULL)
1609 return -1;
1610
1611 return 0;
1612 }
1613
1614 static int
1615 bfd_mach_o_read_section (bfd *abfd,
1616 bfd_mach_o_section *section,
1617 unsigned int offset,
1618 unsigned long prot,
1619 unsigned int wide)
1620 {
1621 if (wide)
1622 return bfd_mach_o_read_section_64 (abfd, section, offset, prot);
1623 else
1624 return bfd_mach_o_read_section_32 (abfd, section, offset, prot);
1625 }
1626
1627 static int
1628 bfd_mach_o_read_symtab_symbol (bfd *abfd,
1629 bfd_mach_o_symtab_command *sym,
1630 bfd_mach_o_asymbol *s,
1631 unsigned long i)
1632 {
1633 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
1634 unsigned int wide = mach_o_wide_p (&mdata->header);
1635 unsigned int symwidth =
1636 wide ? BFD_MACH_O_NLIST_64_SIZE : BFD_MACH_O_NLIST_SIZE;
1637 unsigned int symoff = sym->symoff + (i * symwidth);
1638 unsigned char buf[16];
1639 unsigned char type = -1;
1640 unsigned char section = -1;
1641 short desc = -1;
1642 symvalue value = -1;
1643 unsigned long stroff = -1;
1644 unsigned int symtype = -1;
1645
1646 BFD_ASSERT (sym->strtab != NULL);
1647
1648 if (bfd_seek (abfd, symoff, SEEK_SET) != 0
1649 || bfd_bread ((void *) buf, symwidth, abfd) != symwidth)
1650 {
1651 fprintf (stderr, "bfd_mach_o_read_symtab_symbol: unable to read %d bytes at %lu\n",
1652 symwidth, (unsigned long) symoff);
1653 return -1;
1654 }
1655
1656 stroff = bfd_h_get_32 (abfd, buf);
1657 type = bfd_h_get_8 (abfd, buf + 4);
1658 symtype = type & BFD_MACH_O_N_TYPE;
1659 section = bfd_h_get_8 (abfd, buf + 5);
1660 desc = bfd_h_get_16 (abfd, buf + 6);
1661 if (wide)
1662 value = bfd_h_get_64 (abfd, buf + 8);
1663 else
1664 value = bfd_h_get_32 (abfd, buf + 8);
1665
1666 if (stroff >= sym->strsize)
1667 {
1668 fprintf (stderr, "bfd_mach_o_read_symtab_symbol: symbol name out of range (%lu >= %lu)\n",
1669 (unsigned long) stroff, (unsigned long) sym->strsize);
1670 return -1;
1671 }
1672
1673 s->symbol.the_bfd = abfd;
1674 s->symbol.name = sym->strtab + stroff;
1675 s->symbol.value = value;
1676 s->symbol.flags = 0x0;
1677 s->symbol.udata.i = 0;
1678 s->n_type = type;
1679 s->n_sect = section;
1680 s->n_desc = desc;
1681
1682 if (type & BFD_MACH_O_N_STAB)
1683 {
1684 s->symbol.flags |= BSF_DEBUGGING;
1685 s->symbol.section = bfd_und_section_ptr;
1686 switch (type)
1687 {
1688 case N_FUN:
1689 case N_STSYM:
1690 case N_LCSYM:
1691 case N_BNSYM:
1692 case N_SLINE:
1693 case N_ENSYM:
1694 case N_ECOMM:
1695 case N_ECOML:
1696 case N_GSYM:
1697 if ((section > 0) && (section <= mdata->nsects))
1698 {
1699 s->symbol.section = mdata->sections[section - 1]->bfdsection;
1700 s->symbol.value =
1701 s->symbol.value - mdata->sections[section - 1]->addr;
1702 }
1703 break;
1704 }
1705 }
1706 else
1707 {
1708 if (type & BFD_MACH_O_N_PEXT)
1709 s->symbol.flags |= BSF_GLOBAL;
1710
1711 if (type & BFD_MACH_O_N_EXT)
1712 s->symbol.flags |= BSF_GLOBAL;
1713
1714 if (!(type & (BFD_MACH_O_N_PEXT | BFD_MACH_O_N_EXT)))
1715 s->symbol.flags |= BSF_LOCAL;
1716
1717 switch (symtype)
1718 {
1719 case BFD_MACH_O_N_UNDF:
1720 if (type == (BFD_MACH_O_N_UNDF | BFD_MACH_O_N_EXT)
1721 && s->symbol.value != 0)
1722 {
1723 /* A common symbol. */
1724 s->symbol.section = bfd_com_section_ptr;
1725 s->symbol.flags = BSF_NO_FLAGS;
1726 }
1727 else
1728 {
1729 s->symbol.section = bfd_und_section_ptr;
1730 if (s->n_desc & BFD_MACH_O_N_WEAK_REF)
1731 s->symbol.flags |= BSF_WEAK;
1732 }
1733 break;
1734 case BFD_MACH_O_N_PBUD:
1735 s->symbol.section = bfd_und_section_ptr;
1736 break;
1737 case BFD_MACH_O_N_ABS:
1738 s->symbol.section = bfd_abs_section_ptr;
1739 break;
1740 case BFD_MACH_O_N_SECT:
1741 if ((section > 0) && (section <= mdata->nsects))
1742 {
1743 s->symbol.section = mdata->sections[section - 1]->bfdsection;
1744 s->symbol.value =
1745 s->symbol.value - mdata->sections[section - 1]->addr;
1746 }
1747 else
1748 {
1749 /* Mach-O uses 0 to mean "no section"; not an error. */
1750 if (section != 0)
1751 {
1752 fprintf (stderr, "bfd_mach_o_read_symtab_symbol: "
1753 "symbol \"%s\" specified invalid section %d (max %lu): setting to undefined\n",
1754 s->symbol.name, section, mdata->nsects);
1755 }
1756 s->symbol.section = bfd_und_section_ptr;
1757 }
1758 break;
1759 case BFD_MACH_O_N_INDR:
1760 fprintf (stderr, "bfd_mach_o_read_symtab_symbol: "
1761 "symbol \"%s\" is unsupported 'indirect' reference: setting to undefined\n",
1762 s->symbol.name);
1763 s->symbol.section = bfd_und_section_ptr;
1764 break;
1765 default:
1766 fprintf (stderr, "bfd_mach_o_read_symtab_symbol: "
1767 "symbol \"%s\" specified invalid type field 0x%x: setting to undefined\n",
1768 s->symbol.name, symtype);
1769 s->symbol.section = bfd_und_section_ptr;
1770 break;
1771 }
1772 }
1773
1774 return 0;
1775 }
1776
1777 static int
1778 bfd_mach_o_read_symtab_strtab (bfd *abfd)
1779 {
1780 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
1781 bfd_mach_o_symtab_command *sym = mdata->symtab;
1782
1783 /* Fail if there is no symtab. */
1784 if (sym == NULL)
1785 return -1;
1786
1787 /* Success if already loaded. */
1788 if (sym->strtab)
1789 return 0;
1790
1791 if (abfd->flags & BFD_IN_MEMORY)
1792 {
1793 struct bfd_in_memory *b;
1794
1795 b = (struct bfd_in_memory *) abfd->iostream;
1796
1797 if ((sym->stroff + sym->strsize) > b->size)
1798 {
1799 bfd_set_error (bfd_error_file_truncated);
1800 return -1;
1801 }
1802 sym->strtab = (char *) b->buffer + sym->stroff;
1803 }
1804 else
1805 {
1806 sym->strtab = bfd_alloc (abfd, sym->strsize);
1807 if (sym->strtab == NULL)
1808 return -1;
1809
1810 if (bfd_seek (abfd, sym->stroff, SEEK_SET) != 0
1811 || bfd_bread ((void *) sym->strtab, sym->strsize, abfd) != sym->strsize)
1812 {
1813 bfd_set_error (bfd_error_file_truncated);
1814 return -1;
1815 }
1816 }
1817
1818 return 0;
1819 }
1820
1821 static int
1822 bfd_mach_o_read_symtab_symbols (bfd *abfd)
1823 {
1824 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
1825 bfd_mach_o_symtab_command *sym = mdata->symtab;
1826 unsigned long i;
1827 int ret;
1828
1829 if (sym->symbols)
1830 return 0;
1831
1832 sym->symbols = bfd_alloc (abfd, sym->nsyms * sizeof (bfd_mach_o_asymbol));
1833
1834 if (sym->symbols == NULL)
1835 {
1836 fprintf (stderr, "bfd_mach_o_read_symtab_symbols: unable to allocate memory for symbols\n");
1837 return -1;
1838 }
1839
1840 ret = bfd_mach_o_read_symtab_strtab (abfd);
1841 if (ret != 0)
1842 return ret;
1843
1844 for (i = 0; i < sym->nsyms; i++)
1845 {
1846 ret = bfd_mach_o_read_symtab_symbol (abfd, sym, &sym->symbols[i], i);
1847 if (ret != 0)
1848 return ret;
1849 }
1850
1851 return 0;
1852 }
1853
1854 int
1855 bfd_mach_o_read_dysymtab_symbol (bfd *abfd,
1856 bfd_mach_o_dysymtab_command *dysym,
1857 bfd_mach_o_symtab_command *sym,
1858 bfd_mach_o_asymbol *s,
1859 unsigned long i)
1860 {
1861 unsigned long isymoff = dysym->indirectsymoff + (i * 4);
1862 unsigned long sym_index;
1863 unsigned char buf[4];
1864
1865 BFD_ASSERT (i < dysym->nindirectsyms);
1866
1867 if (bfd_seek (abfd, isymoff, SEEK_SET) != 0
1868 || bfd_bread ((void *) buf, 4, abfd) != 4)
1869 {
1870 fprintf (stderr, "bfd_mach_o_read_dysymtab_symbol: unable to read %lu bytes at %lu\n",
1871 (unsigned long) 4, isymoff);
1872 return -1;
1873 }
1874 sym_index = bfd_h_get_32 (abfd, buf);
1875
1876 return bfd_mach_o_read_symtab_symbol (abfd, sym, s, sym_index);
1877 }
1878
1879 static const char *
1880 bfd_mach_o_i386_flavour_string (unsigned int flavour)
1881 {
1882 switch ((int) flavour)
1883 {
1884 case BFD_MACH_O_x86_THREAD_STATE32: return "x86_THREAD_STATE32";
1885 case BFD_MACH_O_x86_FLOAT_STATE32: return "x86_FLOAT_STATE32";
1886 case BFD_MACH_O_x86_EXCEPTION_STATE32: return "x86_EXCEPTION_STATE32";
1887 case BFD_MACH_O_x86_THREAD_STATE64: return "x86_THREAD_STATE64";
1888 case BFD_MACH_O_x86_FLOAT_STATE64: return "x86_FLOAT_STATE64";
1889 case BFD_MACH_O_x86_EXCEPTION_STATE64: return "x86_EXCEPTION_STATE64";
1890 case BFD_MACH_O_x86_THREAD_STATE: return "x86_THREAD_STATE";
1891 case BFD_MACH_O_x86_FLOAT_STATE: return "x86_FLOAT_STATE";
1892 case BFD_MACH_O_x86_EXCEPTION_STATE: return "x86_EXCEPTION_STATE";
1893 case BFD_MACH_O_x86_DEBUG_STATE32: return "x86_DEBUG_STATE32";
1894 case BFD_MACH_O_x86_DEBUG_STATE64: return "x86_DEBUG_STATE64";
1895 case BFD_MACH_O_x86_DEBUG_STATE: return "x86_DEBUG_STATE";
1896 case BFD_MACH_O_x86_THREAD_STATE_NONE: return "x86_THREAD_STATE_NONE";
1897 default: return "UNKNOWN";
1898 }
1899 }
1900
1901 static const char *
1902 bfd_mach_o_ppc_flavour_string (unsigned int flavour)
1903 {
1904 switch ((int) flavour)
1905 {
1906 case BFD_MACH_O_PPC_THREAD_STATE: return "PPC_THREAD_STATE";
1907 case BFD_MACH_O_PPC_FLOAT_STATE: return "PPC_FLOAT_STATE";
1908 case BFD_MACH_O_PPC_EXCEPTION_STATE: return "PPC_EXCEPTION_STATE";
1909 case BFD_MACH_O_PPC_VECTOR_STATE: return "PPC_VECTOR_STATE";
1910 case BFD_MACH_O_PPC_THREAD_STATE64: return "PPC_THREAD_STATE64";
1911 case BFD_MACH_O_PPC_EXCEPTION_STATE64: return "PPC_EXCEPTION_STATE64";
1912 default: return "UNKNOWN";
1913 }
1914 }
1915
1916 static int
1917 bfd_mach_o_read_dylinker (bfd *abfd, bfd_mach_o_load_command *command)
1918 {
1919 bfd_mach_o_dylinker_command *cmd = &command->command.dylinker;
1920 unsigned char buf[4];
1921 unsigned int nameoff;
1922
1923 BFD_ASSERT ((command->type == BFD_MACH_O_LC_ID_DYLINKER)
1924 || (command->type == BFD_MACH_O_LC_LOAD_DYLINKER));
1925
1926 if (bfd_seek (abfd, command->offset + 8, SEEK_SET) != 0
1927 || bfd_bread ((void *) buf, 4, abfd) != 4)
1928 return -1;
1929
1930 nameoff = bfd_h_get_32 (abfd, buf + 0);
1931
1932 cmd->name_offset = command->offset + nameoff;
1933 cmd->name_len = command->len - nameoff;
1934 cmd->name_str = bfd_alloc (abfd, cmd->name_len);
1935 if (cmd->name_str == NULL)
1936 return -1;
1937 if (bfd_seek (abfd, cmd->name_offset, SEEK_SET) != 0
1938 || bfd_bread (cmd->name_str, cmd->name_len, abfd) != cmd->name_len)
1939 return -1;
1940 return 0;
1941 }
1942
1943 static int
1944 bfd_mach_o_read_dylib (bfd *abfd, bfd_mach_o_load_command *command)
1945 {
1946 bfd_mach_o_dylib_command *cmd = &command->command.dylib;
1947 unsigned char buf[16];
1948 unsigned int nameoff;
1949
1950 switch (command->type)
1951 {
1952 case BFD_MACH_O_LC_LOAD_DYLIB:
1953 case BFD_MACH_O_LC_LOAD_WEAK_DYLIB:
1954 case BFD_MACH_O_LC_ID_DYLIB:
1955 case BFD_MACH_O_LC_REEXPORT_DYLIB:
1956 break;
1957 default:
1958 BFD_FAIL ();
1959 return -1;
1960 }
1961
1962 if (bfd_seek (abfd, command->offset + 8, SEEK_SET) != 0
1963 || bfd_bread ((void *) buf, 16, abfd) != 16)
1964 return -1;
1965
1966 nameoff = bfd_h_get_32 (abfd, buf + 0);
1967 cmd->timestamp = bfd_h_get_32 (abfd, buf + 4);
1968 cmd->current_version = bfd_h_get_32 (abfd, buf + 8);
1969 cmd->compatibility_version = bfd_h_get_32 (abfd, buf + 12);
1970
1971 cmd->name_offset = command->offset + nameoff;
1972 cmd->name_len = command->len - nameoff;
1973 cmd->name_str = bfd_alloc (abfd, cmd->name_len);
1974 if (cmd->name_str == NULL)
1975 return -1;
1976 if (bfd_seek (abfd, cmd->name_offset, SEEK_SET) != 0
1977 || bfd_bread (cmd->name_str, cmd->name_len, abfd) != cmd->name_len)
1978 return -1;
1979 return 0;
1980 }
1981
1982 static int
1983 bfd_mach_o_read_prebound_dylib (bfd *abfd ATTRIBUTE_UNUSED,
1984 bfd_mach_o_load_command *command ATTRIBUTE_UNUSED)
1985 {
1986 /* bfd_mach_o_prebound_dylib_command *cmd = &command->command.prebound_dylib; */
1987
1988 BFD_ASSERT (command->type == BFD_MACH_O_LC_PREBOUND_DYLIB);
1989 return 0;
1990 }
1991
1992 static int
1993 bfd_mach_o_read_thread (bfd *abfd, bfd_mach_o_load_command *command)
1994 {
1995 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
1996 bfd_mach_o_thread_command *cmd = &command->command.thread;
1997 unsigned char buf[8];
1998 unsigned int offset;
1999 unsigned int nflavours;
2000 unsigned int i;
2001
2002 BFD_ASSERT ((command->type == BFD_MACH_O_LC_THREAD)
2003 || (command->type == BFD_MACH_O_LC_UNIXTHREAD));
2004
2005 /* Count the number of threads. */
2006 offset = 8;
2007 nflavours = 0;
2008 while (offset != command->len)
2009 {
2010 if (offset >= command->len)
2011 return -1;
2012
2013 if (bfd_seek (abfd, command->offset + offset, SEEK_SET) != 0
2014 || bfd_bread ((void *) buf, 8, abfd) != 8)
2015 return -1;
2016
2017 offset += 8 + bfd_h_get_32 (abfd, buf + 4) * 4;
2018 nflavours++;
2019 }
2020
2021 /* Allocate threads. */
2022 cmd->flavours = bfd_alloc
2023 (abfd, nflavours * sizeof (bfd_mach_o_thread_flavour));
2024 if (cmd->flavours == NULL)
2025 return -1;
2026 cmd->nflavours = nflavours;
2027
2028 offset = 8;
2029 nflavours = 0;
2030 while (offset != command->len)
2031 {
2032 if (offset >= command->len)
2033 return -1;
2034
2035 if (nflavours >= cmd->nflavours)
2036 return -1;
2037
2038 if (bfd_seek (abfd, command->offset + offset, SEEK_SET) != 0
2039 || bfd_bread ((void *) buf, 8, abfd) != 8)
2040 return -1;
2041
2042 cmd->flavours[nflavours].flavour = bfd_h_get_32 (abfd, buf);
2043 cmd->flavours[nflavours].offset = command->offset + offset + 8;
2044 cmd->flavours[nflavours].size = bfd_h_get_32 (abfd, buf + 4) * 4;
2045 offset += cmd->flavours[nflavours].size + 8;
2046 nflavours++;
2047 }
2048
2049 for (i = 0; i < nflavours; i++)
2050 {
2051 asection *bfdsec;
2052 unsigned int snamelen;
2053 char *sname;
2054 const char *flavourstr;
2055 const char *prefix = "LC_THREAD";
2056 unsigned int j = 0;
2057
2058 switch (mdata->header.cputype)
2059 {
2060 case BFD_MACH_O_CPU_TYPE_POWERPC:
2061 case BFD_MACH_O_CPU_TYPE_POWERPC_64:
2062 flavourstr = bfd_mach_o_ppc_flavour_string (cmd->flavours[i].flavour);
2063 break;
2064 case BFD_MACH_O_CPU_TYPE_I386:
2065 case BFD_MACH_O_CPU_TYPE_X86_64:
2066 flavourstr = bfd_mach_o_i386_flavour_string (cmd->flavours[i].flavour);
2067 break;
2068 default:
2069 flavourstr = "UNKNOWN_ARCHITECTURE";
2070 break;
2071 }
2072
2073 snamelen = strlen (prefix) + 1 + 20 + 1 + strlen (flavourstr) + 1;
2074 sname = bfd_alloc (abfd, snamelen);
2075 if (sname == NULL)
2076 return -1;
2077
2078 for (;;)
2079 {
2080 sprintf (sname, "%s.%s.%u", prefix, flavourstr, j);
2081 if (bfd_get_section_by_name (abfd, sname) == NULL)
2082 break;
2083 j++;
2084 }
2085
2086 bfdsec = bfd_make_section_with_flags (abfd, sname, SEC_HAS_CONTENTS);
2087
2088 bfdsec->vma = 0;
2089 bfdsec->lma = 0;
2090 bfdsec->size = cmd->flavours[i].size;
2091 bfdsec->filepos = cmd->flavours[i].offset;
2092 bfdsec->alignment_power = 0x0;
2093
2094 cmd->section = bfdsec;
2095 }
2096
2097 return 0;
2098 }
2099
2100 static int
2101 bfd_mach_o_read_dysymtab (bfd *abfd, bfd_mach_o_load_command *command)
2102 {
2103 bfd_mach_o_dysymtab_command *cmd = &command->command.dysymtab;
2104 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
2105 unsigned char buf[72];
2106
2107 BFD_ASSERT (command->type == BFD_MACH_O_LC_DYSYMTAB);
2108
2109 if (bfd_seek (abfd, command->offset + 8, SEEK_SET) != 0
2110 || bfd_bread ((void *) buf, 72, abfd) != 72)
2111 return -1;
2112
2113 cmd->ilocalsym = bfd_h_get_32 (abfd, buf + 0);
2114 cmd->nlocalsym = bfd_h_get_32 (abfd, buf + 4);
2115 cmd->iextdefsym = bfd_h_get_32 (abfd, buf + 8);
2116 cmd->nextdefsym = bfd_h_get_32 (abfd, buf + 12);
2117 cmd->iundefsym = bfd_h_get_32 (abfd, buf + 16);
2118 cmd->nundefsym = bfd_h_get_32 (abfd, buf + 20);
2119 cmd->tocoff = bfd_h_get_32 (abfd, buf + 24);
2120 cmd->ntoc = bfd_h_get_32 (abfd, buf + 28);
2121 cmd->modtaboff = bfd_h_get_32 (abfd, buf + 32);
2122 cmd->nmodtab = bfd_h_get_32 (abfd, buf + 36);
2123 cmd->extrefsymoff = bfd_h_get_32 (abfd, buf + 40);
2124 cmd->nextrefsyms = bfd_h_get_32 (abfd, buf + 44);
2125 cmd->indirectsymoff = bfd_h_get_32 (abfd, buf + 48);
2126 cmd->nindirectsyms = bfd_h_get_32 (abfd, buf + 52);
2127 cmd->extreloff = bfd_h_get_32 (abfd, buf + 56);
2128 cmd->nextrel = bfd_h_get_32 (abfd, buf + 60);
2129 cmd->locreloff = bfd_h_get_32 (abfd, buf + 64);
2130 cmd->nlocrel = bfd_h_get_32 (abfd, buf + 68);
2131
2132 if (cmd->nmodtab != 0)
2133 {
2134 unsigned int i;
2135 int wide = bfd_mach_o_wide_p (abfd);
2136 unsigned int module_len = wide ? 56 : 52;
2137
2138 cmd->dylib_module =
2139 bfd_alloc (abfd, cmd->nmodtab * sizeof (bfd_mach_o_dylib_module));
2140 if (cmd->dylib_module == NULL)
2141 return -1;
2142
2143 if (bfd_seek (abfd, cmd->modtaboff, SEEK_SET) != 0)
2144 return -1;
2145
2146 for (i = 0; i < cmd->nmodtab; i++)
2147 {
2148 bfd_mach_o_dylib_module *module = &cmd->dylib_module[i];
2149 unsigned long v;
2150
2151 if (bfd_bread ((void *) buf, module_len, abfd) != module_len)
2152 return -1;
2153
2154 module->module_name_idx = bfd_h_get_32 (abfd, buf + 0);
2155 module->iextdefsym = bfd_h_get_32 (abfd, buf + 4);
2156 module->nextdefsym = bfd_h_get_32 (abfd, buf + 8);
2157 module->irefsym = bfd_h_get_32 (abfd, buf + 12);
2158 module->nrefsym = bfd_h_get_32 (abfd, buf + 16);
2159 module->ilocalsym = bfd_h_get_32 (abfd, buf + 20);
2160 module->nlocalsym = bfd_h_get_32 (abfd, buf + 24);
2161 module->iextrel = bfd_h_get_32 (abfd, buf + 28);
2162 module->nextrel = bfd_h_get_32 (abfd, buf + 32);
2163 v = bfd_h_get_32 (abfd, buf +36);
2164 module->iinit = v & 0xffff;
2165 module->iterm = (v >> 16) & 0xffff;
2166 v = bfd_h_get_32 (abfd, buf + 40);
2167 module->ninit = v & 0xffff;
2168 module->nterm = (v >> 16) & 0xffff;
2169 if (wide)
2170 {
2171 module->objc_module_info_size = bfd_h_get_32 (abfd, buf + 44);
2172 module->objc_module_info_addr = bfd_h_get_64 (abfd, buf + 48);
2173 }
2174 else
2175 {
2176 module->objc_module_info_addr = bfd_h_get_32 (abfd, buf + 44);
2177 module->objc_module_info_size = bfd_h_get_32 (abfd, buf + 48);
2178 }
2179 }
2180 }
2181
2182 if (cmd->ntoc != 0)
2183 {
2184 unsigned int i;
2185
2186 cmd->dylib_toc = bfd_alloc
2187 (abfd, cmd->ntoc * sizeof (bfd_mach_o_dylib_table_of_content));
2188 if (cmd->dylib_toc == NULL)
2189 return -1;
2190
2191 if (bfd_seek (abfd, cmd->tocoff, SEEK_SET) != 0)
2192 return -1;
2193
2194 for (i = 0; i < cmd->ntoc; i++)
2195 {
2196 bfd_mach_o_dylib_table_of_content *toc = &cmd->dylib_toc[i];
2197
2198 if (bfd_bread ((void *) buf, 8, abfd) != 8)
2199 return -1;
2200
2201 toc->symbol_index = bfd_h_get_32 (abfd, buf + 0);
2202 toc->module_index = bfd_h_get_32 (abfd, buf + 4);
2203 }
2204 }
2205
2206 if (cmd->nindirectsyms != 0)
2207 {
2208 unsigned int i;
2209
2210 cmd->indirect_syms = bfd_alloc
2211 (abfd, cmd->nindirectsyms * sizeof (unsigned int));
2212 if (cmd->indirect_syms == NULL)
2213 return -1;
2214
2215 if (bfd_seek (abfd, cmd->indirectsymoff, SEEK_SET) != 0)
2216 return -1;
2217
2218 for (i = 0; i < cmd->nindirectsyms; i++)
2219 {
2220 unsigned int *is = &cmd->indirect_syms[i];
2221
2222 if (bfd_bread ((void *) buf, 4, abfd) != 4)
2223 return -1;
2224
2225 *is = bfd_h_get_32 (abfd, buf + 0);
2226 }
2227 }
2228
2229 if (cmd->nextrefsyms != 0)
2230 {
2231 unsigned long v;
2232 unsigned int i;
2233
2234 cmd->ext_refs = bfd_alloc
2235 (abfd, cmd->nextrefsyms * sizeof (bfd_mach_o_dylib_reference));
2236 if (cmd->ext_refs == NULL)
2237 return -1;
2238
2239 if (bfd_seek (abfd, cmd->extrefsymoff, SEEK_SET) != 0)
2240 return -1;
2241
2242 for (i = 0; i < cmd->nextrefsyms; i++)
2243 {
2244 bfd_mach_o_dylib_reference *ref = &cmd->ext_refs[i];
2245
2246 if (bfd_bread ((void *) buf, 4, abfd) != 4)
2247 return -1;
2248
2249 /* Fields isym and flags are written as bit-fields, thus we need
2250 a specific processing for endianness. */
2251 v = bfd_h_get_32 (abfd, buf + 0);
2252 if (bfd_big_endian (abfd))
2253 {
2254 ref->isym = (v >> 8) & 0xffffff;
2255 ref->flags = v & 0xff;
2256 }
2257 else
2258 {
2259 ref->isym = v & 0xffffff;
2260 ref->flags = (v >> 24) & 0xff;
2261 }
2262 }
2263 }
2264
2265 if (mdata->dysymtab)
2266 return -1;
2267 mdata->dysymtab = cmd;
2268
2269 return 0;
2270 }
2271
2272 static int
2273 bfd_mach_o_read_symtab (bfd *abfd, bfd_mach_o_load_command *command)
2274 {
2275 bfd_mach_o_symtab_command *symtab = &command->command.symtab;
2276 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
2277 unsigned char buf[16];
2278
2279 BFD_ASSERT (command->type == BFD_MACH_O_LC_SYMTAB);
2280
2281 if (bfd_seek (abfd, command->offset + 8, SEEK_SET) != 0
2282 || bfd_bread ((void *) buf, 16, abfd) != 16)
2283 return -1;
2284
2285 symtab->symoff = bfd_h_get_32 (abfd, buf);
2286 symtab->nsyms = bfd_h_get_32 (abfd, buf + 4);
2287 symtab->stroff = bfd_h_get_32 (abfd, buf + 8);
2288 symtab->strsize = bfd_h_get_32 (abfd, buf + 12);
2289 symtab->symbols = NULL;
2290 symtab->strtab = NULL;
2291
2292 if (symtab->nsyms != 0)
2293 abfd->flags |= HAS_SYMS;
2294
2295 if (mdata->symtab)
2296 return -1;
2297 mdata->symtab = symtab;
2298 return 0;
2299 }
2300
2301 static int
2302 bfd_mach_o_read_uuid (bfd *abfd, bfd_mach_o_load_command *command)
2303 {
2304 bfd_mach_o_uuid_command *cmd = &command->command.uuid;
2305
2306 BFD_ASSERT (command->type == BFD_MACH_O_LC_UUID);
2307
2308 if (bfd_seek (abfd, command->offset + 8, SEEK_SET) != 0
2309 || bfd_bread ((void *) cmd->uuid, 16, abfd) != 16)
2310 return -1;
2311
2312 return 0;
2313 }
2314
2315 static int
2316 bfd_mach_o_read_linkedit (bfd *abfd, bfd_mach_o_load_command *command)
2317 {
2318 bfd_mach_o_linkedit_command *cmd = &command->command.linkedit;
2319 char buf[8];
2320
2321 if (bfd_seek (abfd, command->offset + 8, SEEK_SET) != 0
2322 || bfd_bread ((void *) buf, 8, abfd) != 8)
2323 return -1;
2324
2325 cmd->dataoff = bfd_get_32 (abfd, buf + 0);
2326 cmd->datasize = bfd_get_32 (abfd, buf + 4);
2327 return 0;
2328 }
2329
2330 static int
2331 bfd_mach_o_read_str (bfd *abfd, bfd_mach_o_load_command *command)
2332 {
2333 bfd_mach_o_str_command *cmd = &command->command.str;
2334 char buf[4];
2335 unsigned long off;
2336
2337 if (bfd_seek (abfd, command->offset + 8, SEEK_SET) != 0
2338 || bfd_bread ((void *) buf, 4, abfd) != 4)
2339 return -1;
2340
2341 off = bfd_get_32 (abfd, buf + 0);
2342 cmd->stroff = command->offset + off;
2343 cmd->str_len = command->len - off;
2344 cmd->str = bfd_alloc (abfd, cmd->str_len);
2345 if (cmd->str == NULL)
2346 return -1;
2347 if (bfd_seek (abfd, cmd->stroff, SEEK_SET) != 0
2348 || bfd_bread ((void *) cmd->str, cmd->str_len, abfd) != cmd->str_len)
2349 return -1;
2350 return 0;
2351 }
2352
2353 static int
2354 bfd_mach_o_read_dyld_info (bfd *abfd, bfd_mach_o_load_command *command)
2355 {
2356 bfd_mach_o_dyld_info_command *cmd = &command->command.dyld_info;
2357 char buf[40];
2358
2359 if (bfd_seek (abfd, command->offset + 8, SEEK_SET) != 0
2360 || bfd_bread ((void *) buf, sizeof (buf), abfd) != sizeof (buf))
2361 return -1;
2362
2363 cmd->rebase_off = bfd_get_32 (abfd, buf + 0);
2364 cmd->rebase_size = bfd_get_32 (abfd, buf + 4);
2365 cmd->bind_off = bfd_get_32 (abfd, buf + 8);
2366 cmd->bind_size = bfd_get_32 (abfd, buf + 12);
2367 cmd->weak_bind_off = bfd_get_32 (abfd, buf + 16);
2368 cmd->weak_bind_size = bfd_get_32 (abfd, buf + 20);
2369 cmd->lazy_bind_off = bfd_get_32 (abfd, buf + 24);
2370 cmd->lazy_bind_size = bfd_get_32 (abfd, buf + 28);
2371 cmd->export_off = bfd_get_32 (abfd, buf + 32);
2372 cmd->export_size = bfd_get_32 (abfd, buf + 36);
2373 return 0;
2374 }
2375
2376 static int
2377 bfd_mach_o_read_segment (bfd *abfd,
2378 bfd_mach_o_load_command *command,
2379 unsigned int wide)
2380 {
2381 unsigned char buf[64];
2382 bfd_mach_o_segment_command *seg = &command->command.segment;
2383 unsigned long i;
2384
2385 if (wide)
2386 {
2387 BFD_ASSERT (command->type == BFD_MACH_O_LC_SEGMENT_64);
2388
2389 if (bfd_seek (abfd, command->offset + 8, SEEK_SET) != 0
2390 || bfd_bread ((void *) buf, 64, abfd) != 64)
2391 return -1;
2392
2393 memcpy (seg->segname, buf, 16);
2394 seg->segname[16] = '\0';
2395
2396 seg->vmaddr = bfd_h_get_64 (abfd, buf + 16);
2397 seg->vmsize = bfd_h_get_64 (abfd, buf + 24);
2398 seg->fileoff = bfd_h_get_64 (abfd, buf + 32);
2399 seg->filesize = bfd_h_get_64 (abfd, buf + 40);
2400 seg->maxprot = bfd_h_get_32 (abfd, buf + 48);
2401 seg->initprot = bfd_h_get_32 (abfd, buf + 52);
2402 seg->nsects = bfd_h_get_32 (abfd, buf + 56);
2403 seg->flags = bfd_h_get_32 (abfd, buf + 60);
2404 }
2405 else
2406 {
2407 BFD_ASSERT (command->type == BFD_MACH_O_LC_SEGMENT);
2408
2409 if (bfd_seek (abfd, command->offset + 8, SEEK_SET) != 0
2410 || bfd_bread ((void *) buf, 48, abfd) != 48)
2411 return -1;
2412
2413 memcpy (seg->segname, buf, 16);
2414 seg->segname[16] = '\0';
2415
2416 seg->vmaddr = bfd_h_get_32 (abfd, buf + 16);
2417 seg->vmsize = bfd_h_get_32 (abfd, buf + 20);
2418 seg->fileoff = bfd_h_get_32 (abfd, buf + 24);
2419 seg->filesize = bfd_h_get_32 (abfd, buf + 28);
2420 seg->maxprot = bfd_h_get_32 (abfd, buf + 32);
2421 seg->initprot = bfd_h_get_32 (abfd, buf + 36);
2422 seg->nsects = bfd_h_get_32 (abfd, buf + 40);
2423 seg->flags = bfd_h_get_32 (abfd, buf + 44);
2424 }
2425
2426 if (seg->nsects != 0)
2427 {
2428 seg->sections = bfd_alloc (abfd, seg->nsects
2429 * sizeof (bfd_mach_o_section));
2430 if (seg->sections == NULL)
2431 return -1;
2432
2433 for (i = 0; i < seg->nsects; i++)
2434 {
2435 bfd_vma segoff;
2436 if (wide)
2437 segoff = command->offset + BFD_MACH_O_LC_SEGMENT_64_SIZE
2438 + (i * BFD_MACH_O_SECTION_64_SIZE);
2439 else
2440 segoff = command->offset + BFD_MACH_O_LC_SEGMENT_SIZE
2441 + (i * BFD_MACH_O_SECTION_SIZE);
2442
2443 if (bfd_mach_o_read_section
2444 (abfd, &seg->sections[i], segoff, seg->initprot, wide) != 0)
2445 return -1;
2446 }
2447 }
2448
2449 return 0;
2450 }
2451
2452 static int
2453 bfd_mach_o_read_segment_32 (bfd *abfd, bfd_mach_o_load_command *command)
2454 {
2455 return bfd_mach_o_read_segment (abfd, command, 0);
2456 }
2457
2458 static int
2459 bfd_mach_o_read_segment_64 (bfd *abfd, bfd_mach_o_load_command *command)
2460 {
2461 return bfd_mach_o_read_segment (abfd, command, 1);
2462 }
2463
2464 static int
2465 bfd_mach_o_read_command (bfd *abfd, bfd_mach_o_load_command *command)
2466 {
2467 unsigned char buf[8];
2468
2469 /* Read command type and length. */
2470 if (bfd_seek (abfd, command->offset, SEEK_SET) != 0
2471 || bfd_bread ((void *) buf, 8, abfd) != 8)
2472 return -1;
2473
2474 command->type = bfd_h_get_32 (abfd, buf) & ~BFD_MACH_O_LC_REQ_DYLD;
2475 command->type_required = (bfd_h_get_32 (abfd, buf) & BFD_MACH_O_LC_REQ_DYLD
2476 ? TRUE : FALSE);
2477 command->len = bfd_h_get_32 (abfd, buf + 4);
2478
2479 switch (command->type)
2480 {
2481 case BFD_MACH_O_LC_SEGMENT:
2482 if (bfd_mach_o_read_segment_32 (abfd, command) != 0)
2483 return -1;
2484 break;
2485 case BFD_MACH_O_LC_SEGMENT_64:
2486 if (bfd_mach_o_read_segment_64 (abfd, command) != 0)
2487 return -1;
2488 break;
2489 case BFD_MACH_O_LC_SYMTAB:
2490 if (bfd_mach_o_read_symtab (abfd, command) != 0)
2491 return -1;
2492 break;
2493 case BFD_MACH_O_LC_SYMSEG:
2494 break;
2495 case BFD_MACH_O_LC_THREAD:
2496 case BFD_MACH_O_LC_UNIXTHREAD:
2497 if (bfd_mach_o_read_thread (abfd, command) != 0)
2498 return -1;
2499 break;
2500 case BFD_MACH_O_LC_LOAD_DYLINKER:
2501 case BFD_MACH_O_LC_ID_DYLINKER:
2502 if (bfd_mach_o_read_dylinker (abfd, command) != 0)
2503 return -1;
2504 break;
2505 case BFD_MACH_O_LC_LOAD_DYLIB:
2506 case BFD_MACH_O_LC_ID_DYLIB:
2507 case BFD_MACH_O_LC_LOAD_WEAK_DYLIB:
2508 case BFD_MACH_O_LC_REEXPORT_DYLIB:
2509 if (bfd_mach_o_read_dylib (abfd, command) != 0)
2510 return -1;
2511 break;
2512 case BFD_MACH_O_LC_PREBOUND_DYLIB:
2513 if (bfd_mach_o_read_prebound_dylib (abfd, command) != 0)
2514 return -1;
2515 break;
2516 case BFD_MACH_O_LC_LOADFVMLIB:
2517 case BFD_MACH_O_LC_IDFVMLIB:
2518 case BFD_MACH_O_LC_IDENT:
2519 case BFD_MACH_O_LC_FVMFILE:
2520 case BFD_MACH_O_LC_PREPAGE:
2521 case BFD_MACH_O_LC_ROUTINES:
2522 break;
2523 case BFD_MACH_O_LC_SUB_FRAMEWORK:
2524 case BFD_MACH_O_LC_SUB_UMBRELLA:
2525 case BFD_MACH_O_LC_SUB_LIBRARY:
2526 case BFD_MACH_O_LC_SUB_CLIENT:
2527 case BFD_MACH_O_LC_RPATH:
2528 if (bfd_mach_o_read_str (abfd, command) != 0)
2529 return -1;
2530 break;
2531 case BFD_MACH_O_LC_DYSYMTAB:
2532 if (bfd_mach_o_read_dysymtab (abfd, command) != 0)
2533 return -1;
2534 break;
2535 case BFD_MACH_O_LC_TWOLEVEL_HINTS:
2536 case BFD_MACH_O_LC_PREBIND_CKSUM:
2537 break;
2538 case BFD_MACH_O_LC_UUID:
2539 if (bfd_mach_o_read_uuid (abfd, command) != 0)
2540 return -1;
2541 break;
2542 case BFD_MACH_O_LC_CODE_SIGNATURE:
2543 case BFD_MACH_O_LC_SEGMENT_SPLIT_INFO:
2544 if (bfd_mach_o_read_linkedit (abfd, command) != 0)
2545 return -1;
2546 break;
2547 case BFD_MACH_O_LC_DYLD_INFO:
2548 if (bfd_mach_o_read_dyld_info (abfd, command) != 0)
2549 return -1;
2550 break;
2551 default:
2552 fprintf (stderr, "unable to read unknown load command 0x%lx\n",
2553 (unsigned long) command->type);
2554 break;
2555 }
2556
2557 return 0;
2558 }
2559
2560 static void
2561 bfd_mach_o_flatten_sections (bfd *abfd)
2562 {
2563 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
2564 long csect = 0;
2565 unsigned long i, j;
2566
2567 /* Count total number of sections. */
2568 mdata->nsects = 0;
2569
2570 for (i = 0; i < mdata->header.ncmds; i++)
2571 {
2572 if (mdata->commands[i].type == BFD_MACH_O_LC_SEGMENT
2573 || mdata->commands[i].type == BFD_MACH_O_LC_SEGMENT_64)
2574 {
2575 bfd_mach_o_segment_command *seg;
2576
2577 seg = &mdata->commands[i].command.segment;
2578 mdata->nsects += seg->nsects;
2579 }
2580 }
2581
2582 /* Allocate sections array. */
2583 mdata->sections = bfd_alloc (abfd,
2584 mdata->nsects * sizeof (bfd_mach_o_section *));
2585
2586 /* Fill the array. */
2587 csect = 0;
2588
2589 for (i = 0; i < mdata->header.ncmds; i++)
2590 {
2591 if (mdata->commands[i].type == BFD_MACH_O_LC_SEGMENT
2592 || mdata->commands[i].type == BFD_MACH_O_LC_SEGMENT_64)
2593 {
2594 bfd_mach_o_segment_command *seg;
2595
2596 seg = &mdata->commands[i].command.segment;
2597 BFD_ASSERT (csect + seg->nsects <= mdata->nsects);
2598
2599 for (j = 0; j < seg->nsects; j++)
2600 mdata->sections[csect++] = &seg->sections[j];
2601 }
2602 }
2603 }
2604
2605 int
2606 bfd_mach_o_scan_start_address (bfd *abfd)
2607 {
2608 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
2609 bfd_mach_o_thread_command *cmd = NULL;
2610 unsigned long i;
2611
2612 for (i = 0; i < mdata->header.ncmds; i++)
2613 {
2614 if ((mdata->commands[i].type == BFD_MACH_O_LC_THREAD) ||
2615 (mdata->commands[i].type == BFD_MACH_O_LC_UNIXTHREAD))
2616 {
2617 if (cmd == NULL)
2618 cmd = &mdata->commands[i].command.thread;
2619 else
2620 return 0;
2621 }
2622 }
2623
2624 if (cmd == NULL)
2625 return 0;
2626
2627 for (i = 0; i < cmd->nflavours; i++)
2628 {
2629 if ((mdata->header.cputype == BFD_MACH_O_CPU_TYPE_I386)
2630 && (cmd->flavours[i].flavour
2631 == (unsigned long) BFD_MACH_O_x86_THREAD_STATE32))
2632 {
2633 unsigned char buf[4];
2634
2635 if (bfd_seek (abfd, cmd->flavours[i].offset + 40, SEEK_SET) != 0
2636 || bfd_bread (buf, 4, abfd) != 4)
2637 return -1;
2638
2639 abfd->start_address = bfd_h_get_32 (abfd, buf);
2640 }
2641 else if ((mdata->header.cputype == BFD_MACH_O_CPU_TYPE_POWERPC)
2642 && (cmd->flavours[i].flavour == BFD_MACH_O_PPC_THREAD_STATE))
2643 {
2644 unsigned char buf[4];
2645
2646 if (bfd_seek (abfd, cmd->flavours[i].offset + 0, SEEK_SET) != 0
2647 || bfd_bread (buf, 4, abfd) != 4)
2648 return -1;
2649
2650 abfd->start_address = bfd_h_get_32 (abfd, buf);
2651 }
2652 else if ((mdata->header.cputype == BFD_MACH_O_CPU_TYPE_POWERPC_64)
2653 && (cmd->flavours[i].flavour == BFD_MACH_O_PPC_THREAD_STATE64))
2654 {
2655 unsigned char buf[8];
2656
2657 if (bfd_seek (abfd, cmd->flavours[i].offset + 0, SEEK_SET) != 0
2658 || bfd_bread (buf, 8, abfd) != 8)
2659 return -1;
2660
2661 abfd->start_address = bfd_h_get_64 (abfd, buf);
2662 }
2663 else if ((mdata->header.cputype == BFD_MACH_O_CPU_TYPE_X86_64)
2664 && (cmd->flavours[i].flavour == BFD_MACH_O_x86_THREAD_STATE64))
2665 {
2666 unsigned char buf[8];
2667
2668 if (bfd_seek (abfd, cmd->flavours[i].offset + (16 * 8), SEEK_SET) != 0
2669 || bfd_bread (buf, 8, abfd) != 8)
2670 return -1;
2671
2672 abfd->start_address = bfd_h_get_64 (abfd, buf);
2673 }
2674 }
2675
2676 return 0;
2677 }
2678
2679 bfd_boolean
2680 bfd_mach_o_set_arch_mach (bfd *abfd,
2681 enum bfd_architecture arch,
2682 unsigned long machine)
2683 {
2684 bfd_mach_o_backend_data *bed = bfd_mach_o_get_backend_data (abfd);
2685
2686 /* If this isn't the right architecture for this backend, and this
2687 isn't the generic backend, fail. */
2688 if (arch != bed->arch
2689 && arch != bfd_arch_unknown
2690 && bed->arch != bfd_arch_unknown)
2691 return FALSE;
2692
2693 return bfd_default_set_arch_mach (abfd, arch, machine);
2694 }
2695
2696 int
2697 bfd_mach_o_scan (bfd *abfd,
2698 bfd_mach_o_header *header,
2699 bfd_mach_o_data_struct *mdata)
2700 {
2701 unsigned int i;
2702 enum bfd_architecture cputype;
2703 unsigned long cpusubtype;
2704 unsigned int hdrsize;
2705
2706 hdrsize = mach_o_wide_p (header) ?
2707 BFD_MACH_O_HEADER_64_SIZE : BFD_MACH_O_HEADER_SIZE;
2708
2709 mdata->header = *header;
2710
2711 abfd->flags = abfd->flags & BFD_IN_MEMORY;
2712 switch (header->filetype)
2713 {
2714 case BFD_MACH_O_MH_OBJECT:
2715 abfd->flags |= HAS_RELOC;
2716 break;
2717 case BFD_MACH_O_MH_EXECUTE:
2718 abfd->flags |= EXEC_P;
2719 break;
2720 case BFD_MACH_O_MH_DYLIB:
2721 case BFD_MACH_O_MH_BUNDLE:
2722 abfd->flags |= DYNAMIC;
2723 break;
2724 }
2725
2726 abfd->tdata.mach_o_data = mdata;
2727
2728 bfd_mach_o_convert_architecture (header->cputype, header->cpusubtype,
2729 &cputype, &cpusubtype);
2730 if (cputype == bfd_arch_unknown)
2731 {
2732 fprintf (stderr, "bfd_mach_o_scan: unknown architecture 0x%lx/0x%lx\n",
2733 header->cputype, header->cpusubtype);
2734 return -1;
2735 }
2736
2737 bfd_set_arch_mach (abfd, cputype, cpusubtype);
2738
2739 if (header->ncmds != 0)
2740 {
2741 mdata->commands = bfd_alloc
2742 (abfd, header->ncmds * sizeof (bfd_mach_o_load_command));
2743 if (mdata->commands == NULL)
2744 return -1;
2745
2746 for (i = 0; i < header->ncmds; i++)
2747 {
2748 bfd_mach_o_load_command *cur = &mdata->commands[i];
2749
2750 if (i == 0)
2751 cur->offset = hdrsize;
2752 else
2753 {
2754 bfd_mach_o_load_command *prev = &mdata->commands[i - 1];
2755 cur->offset = prev->offset + prev->len;
2756 }
2757
2758 if (bfd_mach_o_read_command (abfd, cur) < 0)
2759 return -1;
2760 }
2761 }
2762
2763 if (bfd_mach_o_scan_start_address (abfd) < 0)
2764 return -1;
2765
2766 bfd_mach_o_flatten_sections (abfd);
2767 return 0;
2768 }
2769
2770 bfd_boolean
2771 bfd_mach_o_mkobject_init (bfd *abfd)
2772 {
2773 bfd_mach_o_data_struct *mdata = NULL;
2774
2775 mdata = bfd_alloc (abfd, sizeof (bfd_mach_o_data_struct));
2776 if (mdata == NULL)
2777 return FALSE;
2778 abfd->tdata.mach_o_data = mdata;
2779
2780 mdata->header.magic = 0;
2781 mdata->header.cputype = 0;
2782 mdata->header.cpusubtype = 0;
2783 mdata->header.filetype = 0;
2784 mdata->header.ncmds = 0;
2785 mdata->header.sizeofcmds = 0;
2786 mdata->header.flags = 0;
2787 mdata->header.byteorder = BFD_ENDIAN_UNKNOWN;
2788 mdata->commands = NULL;
2789 mdata->nsects = 0;
2790 mdata->sections = NULL;
2791
2792 return TRUE;
2793 }
2794
2795 static bfd_boolean
2796 bfd_mach_o_gen_mkobject (bfd *abfd)
2797 {
2798 bfd_mach_o_data_struct *mdata;
2799
2800 if (!bfd_mach_o_mkobject_init (abfd))
2801 return FALSE;
2802
2803 mdata = bfd_mach_o_get_data (abfd);
2804 mdata->header.magic = BFD_MACH_O_MH_MAGIC;
2805 mdata->header.cputype = 0;
2806 mdata->header.cpusubtype = 0;
2807 mdata->header.byteorder = abfd->xvec->byteorder;
2808 mdata->header.version = 1;
2809
2810 return TRUE;
2811 }
2812
2813 const bfd_target *
2814 bfd_mach_o_header_p (bfd *abfd,
2815 bfd_mach_o_filetype filetype,
2816 bfd_mach_o_cpu_type cputype)
2817 {
2818 struct bfd_preserve preserve;
2819 bfd_mach_o_header header;
2820
2821 preserve.marker = NULL;
2822 if (!bfd_mach_o_read_header (abfd, &header))
2823 goto wrong;
2824
2825 if (! (header.byteorder == BFD_ENDIAN_BIG
2826 || header.byteorder == BFD_ENDIAN_LITTLE))
2827 {
2828 fprintf (stderr, "unknown header byte-order value 0x%lx\n",
2829 (unsigned long) header.byteorder);
2830 goto wrong;
2831 }
2832
2833 if (! ((header.byteorder == BFD_ENDIAN_BIG
2834 && abfd->xvec->byteorder == BFD_ENDIAN_BIG
2835 && abfd->xvec->header_byteorder == BFD_ENDIAN_BIG)
2836 || (header.byteorder == BFD_ENDIAN_LITTLE
2837 && abfd->xvec->byteorder == BFD_ENDIAN_LITTLE
2838 && abfd->xvec->header_byteorder == BFD_ENDIAN_LITTLE)))
2839 goto wrong;
2840
2841 /* Check cputype and filetype.
2842 In case of wildcard, do not accept magics that are handled by existing
2843 targets. */
2844 if (cputype)
2845 {
2846 if (header.cputype != cputype)
2847 goto wrong;
2848 }
2849 else
2850 {
2851 switch (header.cputype)
2852 {
2853 case BFD_MACH_O_CPU_TYPE_I386:
2854 /* Handled by mach-o-i386 */
2855 goto wrong;
2856 default:
2857 break;
2858 }
2859 }
2860 if (filetype)
2861 {
2862 if (header.filetype != filetype)
2863 goto wrong;
2864 }
2865 else
2866 {
2867 switch (header.filetype)
2868 {
2869 case BFD_MACH_O_MH_CORE:
2870 /* Handled by core_p */
2871 goto wrong;
2872 default:
2873 break;
2874 }
2875 }
2876
2877 preserve.marker = bfd_zalloc (abfd, sizeof (bfd_mach_o_data_struct));
2878 if (preserve.marker == NULL
2879 || !bfd_preserve_save (abfd, &preserve))
2880 goto fail;
2881
2882 if (bfd_mach_o_scan (abfd, &header,
2883 (bfd_mach_o_data_struct *) preserve.marker) != 0)
2884 goto wrong;
2885
2886 bfd_preserve_finish (abfd, &preserve);
2887 return abfd->xvec;
2888
2889 wrong:
2890 bfd_set_error (bfd_error_wrong_format);
2891
2892 fail:
2893 if (preserve.marker != NULL)
2894 bfd_preserve_restore (abfd, &preserve);
2895 return NULL;
2896 }
2897
2898 static const bfd_target *
2899 bfd_mach_o_gen_object_p (bfd *abfd)
2900 {
2901 return bfd_mach_o_header_p (abfd, 0, 0);
2902 }
2903
2904 static const bfd_target *
2905 bfd_mach_o_gen_core_p (bfd *abfd)
2906 {
2907 return bfd_mach_o_header_p (abfd, BFD_MACH_O_MH_CORE, 0);
2908 }
2909
2910 typedef struct mach_o_fat_archentry
2911 {
2912 unsigned long cputype;
2913 unsigned long cpusubtype;
2914 unsigned long offset;
2915 unsigned long size;
2916 unsigned long align;
2917 } mach_o_fat_archentry;
2918
2919 typedef struct mach_o_fat_data_struct
2920 {
2921 unsigned long magic;
2922 unsigned long nfat_arch;
2923 mach_o_fat_archentry *archentries;
2924 } mach_o_fat_data_struct;
2925
2926 const bfd_target *
2927 bfd_mach_o_archive_p (bfd *abfd)
2928 {
2929 mach_o_fat_data_struct *adata = NULL;
2930 unsigned char buf[20];
2931 unsigned long i;
2932
2933 if (bfd_seek (abfd, 0, SEEK_SET) != 0
2934 || bfd_bread ((void *) buf, 8, abfd) != 8)
2935 goto error;
2936
2937 adata = bfd_alloc (abfd, sizeof (mach_o_fat_data_struct));
2938 if (adata == NULL)
2939 goto error;
2940
2941 adata->magic = bfd_getb32 (buf);
2942 adata->nfat_arch = bfd_getb32 (buf + 4);
2943 if (adata->magic != 0xcafebabe)
2944 goto error;
2945 /* Avoid matching Java bytecode files, which have the same magic number.
2946 In the Java bytecode file format this field contains the JVM version,
2947 which starts at 43.0. */
2948 if (adata->nfat_arch > 30)
2949 goto error;
2950
2951 adata->archentries =
2952 bfd_alloc (abfd, adata->nfat_arch * sizeof (mach_o_fat_archentry));
2953 if (adata->archentries == NULL)
2954 goto error;
2955
2956 for (i = 0; i < adata->nfat_arch; i++)
2957 {
2958 if (bfd_seek (abfd, 8 + 20 * i, SEEK_SET) != 0
2959 || bfd_bread ((void *) buf, 20, abfd) != 20)
2960 goto error;
2961 adata->archentries[i].cputype = bfd_getb32 (buf);
2962 adata->archentries[i].cpusubtype = bfd_getb32 (buf + 4);
2963 adata->archentries[i].offset = bfd_getb32 (buf + 8);
2964 adata->archentries[i].size = bfd_getb32 (buf + 12);
2965 adata->archentries[i].align = bfd_getb32 (buf + 16);
2966 }
2967
2968 abfd->tdata.mach_o_fat_data = adata;
2969 return abfd->xvec;
2970
2971 error:
2972 if (adata != NULL)
2973 bfd_release (abfd, adata);
2974 bfd_set_error (bfd_error_wrong_format);
2975 return NULL;
2976 }
2977
2978 bfd *
2979 bfd_mach_o_openr_next_archived_file (bfd *archive, bfd *prev)
2980 {
2981 mach_o_fat_data_struct *adata;
2982 mach_o_fat_archentry *entry = NULL;
2983 unsigned long i;
2984 bfd *nbfd;
2985 enum bfd_architecture arch_type;
2986 unsigned long arch_subtype;
2987
2988 adata = (mach_o_fat_data_struct *) archive->tdata.mach_o_fat_data;
2989 BFD_ASSERT (adata != NULL);
2990
2991 /* Find index of previous entry. */
2992 if (prev == NULL)
2993 i = 0; /* Start at first one. */
2994 else
2995 {
2996 for (i = 0; i < adata->nfat_arch; i++)
2997 {
2998 if (adata->archentries[i].offset == prev->origin)
2999 break;
3000 }
3001
3002 if (i == adata->nfat_arch)
3003 {
3004 /* Not found. */
3005 bfd_set_error (bfd_error_bad_value);
3006 return NULL;
3007 }
3008 i++; /* Get next entry. */
3009 }
3010
3011 if (i >= adata->nfat_arch)
3012 {
3013 bfd_set_error (bfd_error_no_more_archived_files);
3014 return NULL;
3015 }
3016
3017 entry = &adata->archentries[i];
3018 nbfd = _bfd_new_bfd_contained_in (archive);
3019 if (nbfd == NULL)
3020 return NULL;
3021
3022 nbfd->origin = entry->offset;
3023
3024 bfd_mach_o_convert_architecture (entry->cputype, entry->cpusubtype,
3025 &arch_type, &arch_subtype);
3026 /* Create the member filename.
3027 Use FILENAME:ARCH_NAME. */
3028 {
3029 char *s = NULL;
3030 const char *arch_name;
3031 size_t arch_file_len = strlen (bfd_get_filename (archive));
3032
3033 arch_name = bfd_printable_arch_mach (arch_type, arch_subtype);
3034 s = bfd_malloc (arch_file_len + 1 + strlen (arch_name) + 1);
3035 if (s == NULL)
3036 return NULL;
3037 memcpy (s, bfd_get_filename (archive), arch_file_len);
3038 s[arch_file_len] = ':';
3039 strcpy (s + arch_file_len + 1, arch_name);
3040 nbfd->filename = s;
3041 }
3042 nbfd->iostream = NULL;
3043 bfd_set_arch_mach (nbfd, arch_type, arch_subtype);
3044
3045 return nbfd;
3046 }
3047
3048 /* If ABFD format is FORMAT and architecture is ARCH, return it.
3049 If ABFD is a fat image containing a member that corresponds to FORMAT
3050 and ARCH, returns it.
3051 In other case, returns NULL.
3052 This function allows transparent uses of fat images. */
3053 bfd *
3054 bfd_mach_o_fat_extract (bfd *abfd,
3055 bfd_format format,
3056 const bfd_arch_info_type *arch)
3057 {
3058 bfd *res;
3059 mach_o_fat_data_struct *adata;
3060 unsigned int i;
3061
3062 if (bfd_check_format (abfd, format))
3063 {
3064 if (bfd_get_arch_info (abfd) == arch)
3065 return abfd;
3066 return NULL;
3067 }
3068 if (!bfd_check_format (abfd, bfd_archive)
3069 || abfd->xvec != &mach_o_fat_vec)
3070 return NULL;
3071
3072 /* This is a Mach-O fat image. */
3073 adata = (mach_o_fat_data_struct *) abfd->tdata.mach_o_fat_data;
3074 BFD_ASSERT (adata != NULL);
3075
3076 for (i = 0; i < adata->nfat_arch; i++)
3077 {
3078 struct mach_o_fat_archentry *e = &adata->archentries[i];
3079 enum bfd_architecture cpu_type;
3080 unsigned long cpu_subtype;
3081
3082 bfd_mach_o_convert_architecture (e->cputype, e->cpusubtype,
3083 &cpu_type, &cpu_subtype);
3084 if (cpu_type != arch->arch || cpu_subtype != arch->mach)
3085 continue;
3086
3087 /* The architecture is found. */
3088 res = _bfd_new_bfd_contained_in (abfd);
3089 if (res == NULL)
3090 return NULL;
3091
3092 res->origin = e->offset;
3093
3094 res->filename = strdup (abfd->filename);
3095 res->iostream = NULL;
3096
3097 if (bfd_check_format (res, format))
3098 {
3099 BFD_ASSERT (bfd_get_arch_info (res) == arch);
3100 return res;
3101 }
3102 bfd_close (res);
3103 return NULL;
3104 }
3105
3106 return NULL;
3107 }
3108
3109 int
3110 bfd_mach_o_lookup_section (bfd *abfd,
3111 asection *section,
3112 bfd_mach_o_load_command **mcommand,
3113 bfd_mach_o_section **msection)
3114 {
3115 struct mach_o_data_struct *md = bfd_mach_o_get_data (abfd);
3116 unsigned int i, j, num;
3117
3118 bfd_mach_o_load_command *ncmd = NULL;
3119 bfd_mach_o_section *nsect = NULL;
3120
3121 BFD_ASSERT (mcommand != NULL);
3122 BFD_ASSERT (msection != NULL);
3123
3124 num = 0;
3125 for (i = 0; i < md->header.ncmds; i++)
3126 {
3127 struct bfd_mach_o_load_command *cmd = &md->commands[i];
3128 struct bfd_mach_o_segment_command *seg = NULL;
3129
3130 if (cmd->type != BFD_MACH_O_LC_SEGMENT
3131 || cmd->type != BFD_MACH_O_LC_SEGMENT_64)
3132 continue;
3133 seg = &cmd->command.segment;
3134
3135 for (j = 0; j < seg->nsects; j++)
3136 {
3137 struct bfd_mach_o_section *sect = &seg->sections[j];
3138
3139 if (sect->bfdsection == section)
3140 {
3141 if (num == 0)
3142 {
3143 nsect = sect;
3144 ncmd = cmd;
3145 }
3146 num++;
3147 }
3148 }
3149 }
3150
3151 *mcommand = ncmd;
3152 *msection = nsect;
3153 return num;
3154 }
3155
3156 int
3157 bfd_mach_o_lookup_command (bfd *abfd,
3158 bfd_mach_o_load_command_type type,
3159 bfd_mach_o_load_command **mcommand)
3160 {
3161 struct mach_o_data_struct *md = bfd_mach_o_get_data (abfd);
3162 bfd_mach_o_load_command *ncmd = NULL;
3163 unsigned int i, num;
3164
3165 BFD_ASSERT (md != NULL);
3166 BFD_ASSERT (mcommand != NULL);
3167
3168 num = 0;
3169 for (i = 0; i < md->header.ncmds; i++)
3170 {
3171 struct bfd_mach_o_load_command *cmd = &md->commands[i];
3172
3173 if (cmd->type != type)
3174 continue;
3175
3176 if (num == 0)
3177 ncmd = cmd;
3178 num++;
3179 }
3180
3181 *mcommand = ncmd;
3182 return num;
3183 }
3184
3185 unsigned long
3186 bfd_mach_o_stack_addr (enum bfd_mach_o_cpu_type type)
3187 {
3188 switch (type)
3189 {
3190 case BFD_MACH_O_CPU_TYPE_MC680x0:
3191 return 0x04000000;
3192 case BFD_MACH_O_CPU_TYPE_MC88000:
3193 return 0xffffe000;
3194 case BFD_MACH_O_CPU_TYPE_POWERPC:
3195 return 0xc0000000;
3196 case BFD_MACH_O_CPU_TYPE_I386:
3197 return 0xc0000000;
3198 case BFD_MACH_O_CPU_TYPE_SPARC:
3199 return 0xf0000000;
3200 case BFD_MACH_O_CPU_TYPE_I860:
3201 return 0;
3202 case BFD_MACH_O_CPU_TYPE_HPPA:
3203 return 0xc0000000 - 0x04000000;
3204 default:
3205 return 0;
3206 }
3207 }
3208
3209 typedef struct bfd_mach_o_xlat_name
3210 {
3211 const char *name;
3212 unsigned long val;
3213 }
3214 bfd_mach_o_xlat_name;
3215
3216 static void
3217 bfd_mach_o_print_flags (const bfd_mach_o_xlat_name *table,
3218 unsigned long val,
3219 FILE *file)
3220 {
3221 int first = 1;
3222
3223 for (; table->name; table++)
3224 {
3225 if (table->val & val)
3226 {
3227 if (!first)
3228 fprintf (file, "+");
3229 fprintf (file, "%s", table->name);
3230 val &= ~table->val;
3231 first = 0;
3232 }
3233 }
3234 if (val)
3235 {
3236 if (!first)
3237 fprintf (file, "+");
3238 fprintf (file, "0x%lx", val);
3239 return;
3240 }
3241 if (first)
3242 fprintf (file, "-");
3243 }
3244
3245 static const char *
3246 bfd_mach_o_get_name (const bfd_mach_o_xlat_name *table, unsigned long val)
3247 {
3248 for (; table->name; table++)
3249 if (table->val == val)
3250 return table->name;
3251 return "*UNKNOWN*";
3252 }
3253
3254 static bfd_mach_o_xlat_name bfd_mach_o_cpu_name[] =
3255 {
3256 { "vax", BFD_MACH_O_CPU_TYPE_VAX },
3257 { "mc680x0", BFD_MACH_O_CPU_TYPE_MC680x0 },
3258 { "i386", BFD_MACH_O_CPU_TYPE_I386 },
3259 { "mips", BFD_MACH_O_CPU_TYPE_MIPS },
3260 { "mc98000", BFD_MACH_O_CPU_TYPE_MC98000 },
3261 { "hppa", BFD_MACH_O_CPU_TYPE_HPPA },
3262 { "arm", BFD_MACH_O_CPU_TYPE_ARM },
3263 { "mc88000", BFD_MACH_O_CPU_TYPE_MC88000 },
3264 { "sparc", BFD_MACH_O_CPU_TYPE_SPARC },
3265 { "i860", BFD_MACH_O_CPU_TYPE_I860 },
3266 { "alpha", BFD_MACH_O_CPU_TYPE_ALPHA },
3267 { "powerpc", BFD_MACH_O_CPU_TYPE_POWERPC },
3268 { "powerpc_64", BFD_MACH_O_CPU_TYPE_POWERPC_64 },
3269 { "x86_64", BFD_MACH_O_CPU_TYPE_X86_64 },
3270 { NULL, 0}
3271 };
3272
3273 static bfd_mach_o_xlat_name bfd_mach_o_filetype_name[] =
3274 {
3275 { "object", BFD_MACH_O_MH_OBJECT },
3276 { "execute", BFD_MACH_O_MH_EXECUTE },
3277 { "fvmlib", BFD_MACH_O_MH_FVMLIB },
3278 { "core", BFD_MACH_O_MH_CORE },
3279 { "preload", BFD_MACH_O_MH_PRELOAD },
3280 { "dylib", BFD_MACH_O_MH_DYLIB },
3281 { "dylinker", BFD_MACH_O_MH_DYLINKER },
3282 { "bundle", BFD_MACH_O_MH_BUNDLE },
3283 { "dylib_stub", BFD_MACH_O_MH_DYLIB_STUB },
3284 { "dym", BFD_MACH_O_MH_DSYM },
3285 { "kext_bundle", BFD_MACH_O_MH_KEXT_BUNDLE },
3286 { NULL, 0}
3287 };
3288
3289 static bfd_mach_o_xlat_name bfd_mach_o_header_flags_name[] =
3290 {
3291 { "noundefs", BFD_MACH_O_MH_NOUNDEFS },
3292 { "incrlink", BFD_MACH_O_MH_INCRLINK },
3293 { "dyldlink", BFD_MACH_O_MH_DYLDLINK },
3294 { "bindatload", BFD_MACH_O_MH_BINDATLOAD },
3295 { "prebound", BFD_MACH_O_MH_PREBOUND },
3296 { "split_segs", BFD_MACH_O_MH_SPLIT_SEGS },
3297 { "lazy_init", BFD_MACH_O_MH_LAZY_INIT },
3298 { "twolevel", BFD_MACH_O_MH_TWOLEVEL },
3299 { "force_flat", BFD_MACH_O_MH_FORCE_FLAT },
3300 { "nomultidefs", BFD_MACH_O_MH_NOMULTIDEFS },
3301 { "nofixprebinding", BFD_MACH_O_MH_NOFIXPREBINDING },
3302 { "prebindable", BFD_MACH_O_MH_PREBINDABLE },
3303 { "allmodsbound", BFD_MACH_O_MH_ALLMODSBOUND },
3304 { "subsections_via_symbols", BFD_MACH_O_MH_SUBSECTIONS_VIA_SYMBOLS },
3305 { "canonical", BFD_MACH_O_MH_CANONICAL },
3306 { "weak_defines", BFD_MACH_O_MH_WEAK_DEFINES },
3307 { "binds_to_weak", BFD_MACH_O_MH_BINDS_TO_WEAK },
3308 { "allow_stack_execution", BFD_MACH_O_MH_ALLOW_STACK_EXECUTION },
3309 { "root_safe", BFD_MACH_O_MH_ROOT_SAFE },
3310 { "setuid_safe", BFD_MACH_O_MH_SETUID_SAFE },
3311 { "no_reexported_dylibs", BFD_MACH_O_MH_NO_REEXPORTED_DYLIBS },
3312 { "pie", BFD_MACH_O_MH_PIE },
3313 { NULL, 0}
3314 };
3315
3316 static bfd_mach_o_xlat_name bfd_mach_o_section_type_name[] =
3317 {
3318 { "regular", BFD_MACH_O_S_REGULAR},
3319 { "zerofill", BFD_MACH_O_S_ZEROFILL},
3320 { "cstring_literals", BFD_MACH_O_S_CSTRING_LITERALS},
3321 { "4byte_literals", BFD_MACH_O_S_4BYTE_LITERALS},
3322 { "8byte_literals", BFD_MACH_O_S_8BYTE_LITERALS},
3323 { "literal_pointers", BFD_MACH_O_S_LITERAL_POINTERS},
3324 { "non_lazy_symbol_pointers", BFD_MACH_O_S_NON_LAZY_SYMBOL_POINTERS},
3325 { "lazy_symbol_pointers", BFD_MACH_O_S_LAZY_SYMBOL_POINTERS},
3326 { "symbol_stubs", BFD_MACH_O_S_SYMBOL_STUBS},
3327 { "mod_init_func_pointers", BFD_MACH_O_S_MOD_INIT_FUNC_POINTERS},
3328 { "mod_fini_func_pointers", BFD_MACH_O_S_MOD_FINI_FUNC_POINTERS},
3329 { "coalesced", BFD_MACH_O_S_COALESCED},
3330 { "gb_zerofill", BFD_MACH_O_S_GB_ZEROFILL},
3331 { "interposing", BFD_MACH_O_S_INTERPOSING},
3332 { "16byte_literals", BFD_MACH_O_S_16BYTE_LITERALS},
3333 { "dtrace_dof", BFD_MACH_O_S_DTRACE_DOF},
3334 { "lazy_dylib_symbol_pointers", BFD_MACH_O_S_LAZY_DYLIB_SYMBOL_POINTERS},
3335 { NULL, 0}
3336 };
3337
3338 static bfd_mach_o_xlat_name bfd_mach_o_section_attribute_name[] =
3339 {
3340 { "loc_reloc", BFD_MACH_O_S_ATTR_LOC_RELOC },
3341 { "ext_reloc", BFD_MACH_O_S_ATTR_EXT_RELOC },
3342 { "some_instructions", BFD_MACH_O_S_ATTR_SOME_INSTRUCTIONS },
3343 { "debug", BFD_MACH_O_S_ATTR_DEBUG },
3344 { "modifying_code", BFD_MACH_O_S_SELF_MODIFYING_CODE },
3345 { "live_support", BFD_MACH_O_S_ATTR_LIVE_SUPPORT },
3346 { "no_dead_strip", BFD_MACH_O_S_ATTR_NO_DEAD_STRIP },
3347 { "strip_static_syms", BFD_MACH_O_S_ATTR_STRIP_STATIC_SYMS },
3348 { "no_toc", BFD_MACH_O_S_ATTR_NO_TOC },
3349 { "pure_instructions", BFD_MACH_O_S_ATTR_PURE_INSTRUCTIONS },
3350 { NULL, 0}
3351 };
3352
3353 static bfd_mach_o_xlat_name bfd_mach_o_load_command_name[] =
3354 {
3355 { "segment", BFD_MACH_O_LC_SEGMENT},
3356 { "symtab", BFD_MACH_O_LC_SYMTAB},
3357 { "symseg", BFD_MACH_O_LC_SYMSEG},
3358 { "thread", BFD_MACH_O_LC_THREAD},
3359 { "unixthread", BFD_MACH_O_LC_UNIXTHREAD},
3360 { "loadfvmlib", BFD_MACH_O_LC_LOADFVMLIB},
3361 { "idfvmlib", BFD_MACH_O_LC_IDFVMLIB},
3362 { "ident", BFD_MACH_O_LC_IDENT},
3363 { "fvmfile", BFD_MACH_O_LC_FVMFILE},
3364 { "prepage", BFD_MACH_O_LC_PREPAGE},
3365 { "dysymtab", BFD_MACH_O_LC_DYSYMTAB},
3366 { "load_dylib", BFD_MACH_O_LC_LOAD_DYLIB},
3367 { "id_dylib", BFD_MACH_O_LC_ID_DYLIB},
3368 { "load_dylinker", BFD_MACH_O_LC_LOAD_DYLINKER},
3369 { "id_dylinker", BFD_MACH_O_LC_ID_DYLINKER},
3370 { "prebound_dylib", BFD_MACH_O_LC_PREBOUND_DYLIB},
3371 { "routines", BFD_MACH_O_LC_ROUTINES},
3372 { "sub_framework", BFD_MACH_O_LC_SUB_FRAMEWORK},
3373 { "sub_umbrella", BFD_MACH_O_LC_SUB_UMBRELLA},
3374 { "sub_client", BFD_MACH_O_LC_SUB_CLIENT},
3375 { "sub_library", BFD_MACH_O_LC_SUB_LIBRARY},
3376 { "twolevel_hints", BFD_MACH_O_LC_TWOLEVEL_HINTS},
3377 { "prebind_cksum", BFD_MACH_O_LC_PREBIND_CKSUM},
3378 { "load_weak_dylib", BFD_MACH_O_LC_LOAD_WEAK_DYLIB},
3379 { "segment_64", BFD_MACH_O_LC_SEGMENT_64},
3380 { "routines_64", BFD_MACH_O_LC_ROUTINES_64},
3381 { "uuid", BFD_MACH_O_LC_UUID},
3382 { "rpath", BFD_MACH_O_LC_RPATH},
3383 { "code_signature", BFD_MACH_O_LC_CODE_SIGNATURE},
3384 { "segment_split_info", BFD_MACH_O_LC_SEGMENT_SPLIT_INFO},
3385 { "reexport_dylib", BFD_MACH_O_LC_REEXPORT_DYLIB},
3386 { "lazy_load_dylib", BFD_MACH_O_LC_LAZY_LOAD_DYLIB},
3387 { "encryption_info", BFD_MACH_O_LC_ENCRYPTION_INFO},
3388 { "dyld_info", BFD_MACH_O_LC_DYLD_INFO},
3389 { NULL, 0}
3390 };
3391
3392 static void
3393 bfd_mach_o_print_private_header (bfd *abfd, FILE *file)
3394 {
3395 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
3396 bfd_mach_o_header *h = &mdata->header;
3397
3398 fputs (_("Mach-O header:\n"), file);
3399 fprintf (file, _(" magic : %08lx\n"), h->magic);
3400 fprintf (file, _(" cputype : %08lx (%s)\n"), h->cputype,
3401 bfd_mach_o_get_name (bfd_mach_o_cpu_name, h->cputype));
3402 fprintf (file, _(" cpusubtype: %08lx\n"), h->cpusubtype);
3403 fprintf (file, _(" filetype : %08lx (%s)\n"),
3404 h->filetype,
3405 bfd_mach_o_get_name (bfd_mach_o_filetype_name, h->filetype));
3406 fprintf (file, _(" ncmds : %08lx (%lu)\n"), h->ncmds, h->ncmds);
3407 fprintf (file, _(" sizeofcmds: %08lx\n"), h->sizeofcmds);
3408 fprintf (file, _(" flags : %08lx ("), h->flags);
3409 bfd_mach_o_print_flags (bfd_mach_o_header_flags_name, h->flags, file);
3410 fputs (_(")\n"), file);
3411 fprintf (file, _(" reserved : %08x\n"), h->reserved);
3412 }
3413
3414 static void
3415 bfd_mach_o_print_section_map (bfd *abfd, FILE *file)
3416 {
3417 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
3418 unsigned int i, j;
3419 unsigned int sec_nbr = 0;
3420
3421 fputs (_("Segments and Sections:\n"), file);
3422 fputs (_(" #: Segment name Section name Address\n"), file);
3423
3424 for (i = 0; i < mdata->header.ncmds; i++)
3425 {
3426 bfd_mach_o_segment_command *seg;
3427
3428 if (mdata->commands[i].type != BFD_MACH_O_LC_SEGMENT
3429 && mdata->commands[i].type != BFD_MACH_O_LC_SEGMENT_64)
3430 continue;
3431
3432 seg = &mdata->commands[i].command.segment;
3433
3434 fprintf (file, "[Segment %-16s ", seg->segname);
3435 fprintf_vma (file, seg->vmaddr);
3436 fprintf (file, "-");
3437 fprintf_vma (file, seg->vmaddr + seg->vmsize - 1);
3438 fputc (' ', file);
3439 fputc (seg->initprot & BFD_MACH_O_PROT_READ ? 'r' : '-', file);
3440 fputc (seg->initprot & BFD_MACH_O_PROT_WRITE ? 'w' : '-', file);
3441 fputc (seg->initprot & BFD_MACH_O_PROT_EXECUTE ? 'x' : '-', file);
3442 fprintf (file, "]\n");
3443 for (j = 0; j < seg->nsects; j++)
3444 {
3445 bfd_mach_o_section *sec = &seg->sections[j];
3446 fprintf (file, "%02u: %-16s %-16s ", ++sec_nbr,
3447 sec->segname, sec->sectname);
3448 fprintf_vma (file, sec->addr);
3449 fprintf (file, " ");
3450 fprintf_vma (file, sec->size);
3451 fprintf (file, " %08lx\n", sec->flags);
3452 }
3453 }
3454 }
3455
3456 static void
3457 bfd_mach_o_print_section (bfd *abfd ATTRIBUTE_UNUSED,
3458 bfd_mach_o_section *sec, FILE *file)
3459 {
3460 fprintf (file, " Section: %-16s %-16s (bfdname: %s)\n",
3461 sec->sectname, sec->segname, sec->bfdsection->name);
3462 fprintf (file, " addr: ");
3463 fprintf_vma (file, sec->addr);
3464 fprintf (file, " size: ");
3465 fprintf_vma (file, sec->size);
3466 fprintf (file, " offset: ");
3467 fprintf_vma (file, sec->offset);
3468 fprintf (file, "\n");
3469 fprintf (file, " align: %ld", sec->align);
3470 fprintf (file, " nreloc: %lu reloff: ", sec->nreloc);
3471 fprintf_vma (file, sec->reloff);
3472 fprintf (file, "\n");
3473 fprintf (file, " flags: %08lx (type: %s", sec->flags,
3474 bfd_mach_o_get_name (bfd_mach_o_section_type_name,
3475 sec->flags & BFD_MACH_O_SECTION_TYPE_MASK));
3476 fprintf (file, " attr: ");
3477 bfd_mach_o_print_flags (bfd_mach_o_section_attribute_name,
3478 sec->flags & BFD_MACH_O_SECTION_ATTRIBUTES_MASK,
3479 file);
3480 fprintf (file, ")\n");
3481 switch (sec->flags & BFD_MACH_O_SECTION_TYPE_MASK)
3482 {
3483 case BFD_MACH_O_S_NON_LAZY_SYMBOL_POINTERS:
3484 case BFD_MACH_O_S_LAZY_SYMBOL_POINTERS:
3485 case BFD_MACH_O_S_SYMBOL_STUBS:
3486 fprintf (file, " first indirect sym: %lu", sec->reserved1);
3487 fprintf (file, " (%u entries)",
3488 bfd_mach_o_section_get_nbr_indirect (abfd, sec));
3489 break;
3490 default:
3491 fprintf (file, " reserved1: 0x%lx", sec->reserved1);
3492 break;
3493 }
3494 switch (sec->flags & BFD_MACH_O_SECTION_TYPE_MASK)
3495 {
3496 case BFD_MACH_O_S_SYMBOL_STUBS:
3497 fprintf (file, " stub size: %lu", sec->reserved2);
3498 break;
3499 default:
3500 fprintf (file, " reserved2: 0x%lx", sec->reserved2);
3501 break;
3502 }
3503 fprintf (file, " reserved3: 0x%lx\n", sec->reserved3);
3504 }
3505
3506 static void
3507 bfd_mach_o_print_segment (bfd *abfd ATTRIBUTE_UNUSED,
3508 bfd_mach_o_load_command *cmd, FILE *file)
3509 {
3510 bfd_mach_o_segment_command *seg = &cmd->command.segment;
3511 unsigned int i;
3512
3513 fprintf (file, " name: %s\n", *seg->segname ? seg->segname : "*none*");
3514 fprintf (file, " vmaddr: ");
3515 fprintf_vma (file, seg->vmaddr);
3516 fprintf (file, " vmsize: ");
3517 fprintf_vma (file, seg->vmsize);
3518 fprintf (file, "\n");
3519 fprintf (file, " fileoff: ");
3520 fprintf_vma (file, seg->fileoff);
3521 fprintf (file, " filesize: ");
3522 fprintf_vma (file, (bfd_vma)seg->filesize);
3523 fprintf (file, " endoff: ");
3524 fprintf_vma (file, (bfd_vma)(seg->fileoff + seg->filesize));
3525 fprintf (file, "\n");
3526 fprintf (file, " nsects: %lu ", seg->nsects);
3527 fprintf (file, " flags: %lx\n", seg->flags);
3528 for (i = 0; i < seg->nsects; i++)
3529 bfd_mach_o_print_section (abfd, &seg->sections[i], file);
3530 }
3531
3532 static void
3533 bfd_mach_o_print_dysymtab (bfd *abfd ATTRIBUTE_UNUSED,
3534 bfd_mach_o_load_command *cmd, FILE *file)
3535 {
3536 bfd_mach_o_dysymtab_command *dysymtab = &cmd->command.dysymtab;
3537 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
3538 unsigned int i;
3539
3540 fprintf (file, " local symbols: idx: %10lu num: %-8lu",
3541 dysymtab->ilocalsym, dysymtab->nlocalsym);
3542 fprintf (file, " (nxtidx: %lu)\n",
3543 dysymtab->ilocalsym + dysymtab->nlocalsym);
3544 fprintf (file, " external symbols: idx: %10lu num: %-8lu",
3545 dysymtab->iextdefsym, dysymtab->nextdefsym);
3546 fprintf (file, " (nxtidx: %lu)\n",
3547 dysymtab->iextdefsym + dysymtab->nextdefsym);
3548 fprintf (file, " undefined symbols: idx: %10lu num: %-8lu",
3549 dysymtab->iundefsym, dysymtab->nundefsym);
3550 fprintf (file, " (nxtidx: %lu)\n",
3551 dysymtab->iundefsym + dysymtab->nundefsym);
3552 fprintf (file, " table of content: off: 0x%08lx num: %-8lu",
3553 dysymtab->tocoff, dysymtab->ntoc);
3554 fprintf (file, " (endoff: 0x%08lx)\n",
3555 dysymtab->tocoff
3556 + dysymtab->ntoc * BFD_MACH_O_TABLE_OF_CONTENT_SIZE);
3557 fprintf (file, " module table: off: 0x%08lx num: %-8lu",
3558 dysymtab->modtaboff, dysymtab->nmodtab);
3559 fprintf (file, " (endoff: 0x%08lx)\n",
3560 dysymtab->modtaboff + dysymtab->nmodtab
3561 * (mach_o_wide_p (&mdata->header) ?
3562 BFD_MACH_O_DYLIB_MODULE_64_SIZE : BFD_MACH_O_DYLIB_MODULE_SIZE));
3563 fprintf (file, " external reference table: off: 0x%08lx num: %-8lu",
3564 dysymtab->extrefsymoff, dysymtab->nextrefsyms);
3565 fprintf (file, " (endoff: 0x%08lx)\n",
3566 dysymtab->extrefsymoff
3567 + dysymtab->nextrefsyms * BFD_MACH_O_REFERENCE_SIZE);
3568 fprintf (file, " indirect symbol table: off: 0x%08lx num: %-8lu",
3569 dysymtab->indirectsymoff, dysymtab->nindirectsyms);
3570 fprintf (file, " (endoff: 0x%08lx)\n",
3571 dysymtab->indirectsymoff
3572 + dysymtab->nindirectsyms * BFD_MACH_O_INDIRECT_SYMBOL_SIZE);
3573 fprintf (file, " external relocation table: off: 0x%08lx num: %-8lu",
3574 dysymtab->extreloff, dysymtab->nextrel);
3575 fprintf (file, " (endoff: 0x%08lx)\n",
3576 dysymtab->extreloff + dysymtab->nextrel * BFD_MACH_O_RELENT_SIZE);
3577 fprintf (file, " local relocation table: off: 0x%08lx num: %-8lu",
3578 dysymtab->locreloff, dysymtab->nlocrel);
3579 fprintf (file, " (endoff: 0x%08lx)\n",
3580 dysymtab->locreloff + dysymtab->nlocrel * BFD_MACH_O_RELENT_SIZE);
3581
3582 if (dysymtab->ntoc > 0
3583 || dysymtab->nindirectsyms > 0
3584 || dysymtab->nextrefsyms > 0)
3585 {
3586 /* Try to read the symbols to display the toc or indirect symbols. */
3587 bfd_mach_o_read_symtab_symbols (abfd);
3588 }
3589 else if (dysymtab->nmodtab > 0)
3590 {
3591 /* Try to read the strtab to display modules name. */
3592 bfd_mach_o_read_symtab_strtab (abfd);
3593 }
3594
3595 for (i = 0; i < dysymtab->nmodtab; i++)
3596 {
3597 bfd_mach_o_dylib_module *module = &dysymtab->dylib_module[i];
3598 fprintf (file, " module %u:\n", i);
3599 fprintf (file, " name: %lu", module->module_name_idx);
3600 if (mdata->symtab && mdata->symtab->strtab)
3601 fprintf (file, ": %s",
3602 mdata->symtab->strtab + module->module_name_idx);
3603 fprintf (file, "\n");
3604 fprintf (file, " extdefsym: idx: %8lu num: %lu\n",
3605 module->iextdefsym, module->nextdefsym);
3606 fprintf (file, " refsym: idx: %8lu num: %lu\n",
3607 module->irefsym, module->nrefsym);
3608 fprintf (file, " localsym: idx: %8lu num: %lu\n",
3609 module->ilocalsym, module->nlocalsym);
3610 fprintf (file, " extrel: idx: %8lu num: %lu\n",
3611 module->iextrel, module->nextrel);
3612 fprintf (file, " init: idx: %8u num: %u\n",
3613 module->iinit, module->ninit);
3614 fprintf (file, " term: idx: %8u num: %u\n",
3615 module->iterm, module->nterm);
3616 fprintf (file, " objc_module_info: addr: ");
3617 fprintf_vma (file, module->objc_module_info_addr);
3618 fprintf (file, " size: %lu\n", module->objc_module_info_size);
3619 }
3620
3621 if (dysymtab->ntoc > 0)
3622 {
3623 bfd_mach_o_symtab_command *symtab = mdata->symtab;
3624
3625 fprintf (file, " table of content: (symbol/module)\n");
3626 for (i = 0; i < dysymtab->ntoc; i++)
3627 {
3628 bfd_mach_o_dylib_table_of_content *toc = &dysymtab->dylib_toc[i];
3629
3630 fprintf (file, " %4u: ", i);
3631 if (symtab && symtab->symbols && toc->symbol_index < symtab->nsyms)
3632 {
3633 const char *name = symtab->symbols[toc->symbol_index].symbol.name;
3634 fprintf (file, "%s (%lu)", name ? name : "*invalid*",
3635 toc->symbol_index);
3636 }
3637 else
3638 fprintf (file, "%lu", toc->symbol_index);
3639
3640 fprintf (file, " / ");
3641 if (symtab && symtab->strtab
3642 && toc->module_index < dysymtab->nmodtab)
3643 {
3644 bfd_mach_o_dylib_module *mod;
3645 mod = &dysymtab->dylib_module[toc->module_index];
3646 fprintf (file, "%s (%lu)",
3647 symtab->strtab + mod->module_name_idx,
3648 toc->module_index);
3649 }
3650 else
3651 fprintf (file, "%lu", toc->module_index);
3652
3653 fprintf (file, "\n");
3654 }
3655 }
3656
3657 if (dysymtab->nindirectsyms != 0)
3658 {
3659 fprintf (file, " indirect symbols:\n");
3660
3661 for (i = 0; i < mdata->nsects; i++)
3662 {
3663 bfd_mach_o_section *sec = mdata->sections[i];
3664 unsigned int j, first, last;
3665 bfd_mach_o_symtab_command *symtab = mdata->symtab;
3666 bfd_vma addr;
3667 bfd_vma entry_size;
3668
3669 switch (sec->flags & BFD_MACH_O_SECTION_TYPE_MASK)
3670 {
3671 case BFD_MACH_O_S_NON_LAZY_SYMBOL_POINTERS:
3672 case BFD_MACH_O_S_LAZY_SYMBOL_POINTERS:
3673 case BFD_MACH_O_S_SYMBOL_STUBS:
3674 first = sec->reserved1;
3675 last = first + bfd_mach_o_section_get_nbr_indirect (abfd, sec);
3676 addr = sec->addr;
3677 entry_size = bfd_mach_o_section_get_entry_size (abfd, sec);
3678 fprintf (file, " for section %s.%s:\n",
3679 sec->segname, sec->sectname);
3680 for (j = first; j < last; j++)
3681 {
3682 unsigned int isym = dysymtab->indirect_syms[j];
3683
3684 fprintf (file, " ");
3685 fprintf_vma (file, addr);
3686 fprintf (file, " %5u: 0x%08x", j, isym);
3687 if (isym & BFD_MACH_O_INDIRECT_SYMBOL_LOCAL)
3688 fprintf (file, " LOCAL");
3689 if (isym & BFD_MACH_O_INDIRECT_SYMBOL_ABS)
3690 fprintf (file, " ABSOLUTE");
3691 if (symtab && symtab->symbols
3692 && isym < symtab->nsyms
3693 && symtab->symbols[isym].symbol.name)
3694 fprintf (file, " %s", symtab->symbols[isym].symbol.name);
3695 fprintf (file, "\n");
3696 addr += entry_size;
3697 }
3698 break;
3699 default:
3700 break;
3701 }
3702 }
3703 }
3704 if (dysymtab->nextrefsyms > 0)
3705 {
3706 bfd_mach_o_symtab_command *symtab = mdata->symtab;
3707
3708 fprintf (file, " external reference table: (symbol flags)\n");
3709 for (i = 0; i < dysymtab->nextrefsyms; i++)
3710 {
3711 bfd_mach_o_dylib_reference *ref = &dysymtab->ext_refs[i];
3712
3713 fprintf (file, " %4u: %5lu 0x%02lx", i, ref->isym, ref->flags);
3714 if (symtab && symtab->symbols
3715 && ref->isym < symtab->nsyms
3716 && symtab->symbols[ref->isym].symbol.name)
3717 fprintf (file, " %s", symtab->symbols[ref->isym].symbol.name);
3718 fprintf (file, "\n");
3719 }
3720 }
3721
3722 }
3723
3724 static void
3725 bfd_mach_o_print_dyld_info (bfd *abfd ATTRIBUTE_UNUSED,
3726 bfd_mach_o_load_command *cmd, FILE *file)
3727 {
3728 bfd_mach_o_dyld_info_command *info = &cmd->command.dyld_info;
3729
3730 fprintf (file, " rebase: off: 0x%08x size: %-8u\n",
3731 info->rebase_off, info->rebase_size);
3732 fprintf (file, " bind: off: 0x%08x size: %-8u\n",
3733 info->bind_off, info->bind_size);
3734 fprintf (file, " weak bind: off: 0x%08x size: %-8u\n",
3735 info->weak_bind_off, info->weak_bind_size);
3736 fprintf (file, " lazy bind: off: 0x%08x size: %-8u\n",
3737 info->lazy_bind_off, info->lazy_bind_size);
3738 fprintf (file, " export: off: 0x%08x size: %-8u\n",
3739 info->export_off, info->export_size);
3740 }
3741
3742 bfd_boolean
3743 bfd_mach_o_bfd_print_private_bfd_data (bfd *abfd, void * ptr)
3744 {
3745 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
3746 FILE *file = (FILE *) ptr;
3747 unsigned int i;
3748
3749 bfd_mach_o_print_private_header (abfd, file);
3750 fputc ('\n', file);
3751
3752 for (i = 0; i < mdata->header.ncmds; i++)
3753 {
3754 bfd_mach_o_load_command *cmd = &mdata->commands[i];
3755
3756 fprintf (file, "Load command %s:",
3757 bfd_mach_o_get_name (bfd_mach_o_load_command_name, cmd->type));
3758 switch (cmd->type)
3759 {
3760 case BFD_MACH_O_LC_SEGMENT:
3761 case BFD_MACH_O_LC_SEGMENT_64:
3762 bfd_mach_o_print_segment (abfd, cmd, file);
3763 break;
3764 case BFD_MACH_O_LC_UUID:
3765 {
3766 bfd_mach_o_uuid_command *uuid = &cmd->command.uuid;
3767 unsigned int j;
3768
3769 for (j = 0; j < sizeof (uuid->uuid); j ++)
3770 fprintf (file, " %02x", uuid->uuid[j]);
3771 fputc ('\n', file);
3772 }
3773 break;
3774 case BFD_MACH_O_LC_LOAD_DYLIB:
3775 case BFD_MACH_O_LC_LOAD_WEAK_DYLIB:
3776 case BFD_MACH_O_LC_REEXPORT_DYLIB:
3777 case BFD_MACH_O_LC_ID_DYLIB:
3778 {
3779 bfd_mach_o_dylib_command *dylib = &cmd->command.dylib;
3780 fprintf (file, " %s\n", dylib->name_str);
3781 fprintf (file, " time stamp: 0x%08lx\n",
3782 dylib->timestamp);
3783 fprintf (file, " current version: 0x%08lx\n",
3784 dylib->current_version);
3785 fprintf (file, " comptibility version: 0x%08lx\n",
3786 dylib->compatibility_version);
3787 break;
3788 }
3789 case BFD_MACH_O_LC_LOAD_DYLINKER:
3790 case BFD_MACH_O_LC_ID_DYLINKER:
3791 fprintf (file, " %s\n", cmd->command.dylinker.name_str);
3792 break;
3793 case BFD_MACH_O_LC_SYMTAB:
3794 {
3795 bfd_mach_o_symtab_command *symtab = &cmd->command.symtab;
3796 fprintf (file,
3797 "\n"
3798 " symoff: 0x%08x nsyms: %8u (endoff: 0x%08x)\n",
3799 symtab->symoff, symtab->nsyms,
3800 symtab->symoff + symtab->nsyms
3801 * (mach_o_wide_p (&mdata->header)
3802 ? BFD_MACH_O_NLIST_64_SIZE : BFD_MACH_O_NLIST_SIZE));
3803 fprintf (file,
3804 " stroff: 0x%08x strsize: %8u (endoff: 0x%08x)\n",
3805 symtab->stroff, symtab->strsize,
3806 symtab->stroff + symtab->strsize);
3807 break;
3808 }
3809 case BFD_MACH_O_LC_DYSYMTAB:
3810 fprintf (file, "\n");
3811 bfd_mach_o_print_dysymtab (abfd, cmd, file);
3812 break;
3813 case BFD_MACH_O_LC_CODE_SIGNATURE:
3814 case BFD_MACH_O_LC_SEGMENT_SPLIT_INFO:
3815 {
3816 bfd_mach_o_linkedit_command *linkedit = &cmd->command.linkedit;
3817 fprintf
3818 (file, "\n"
3819 " dataoff: 0x%08lx datasize: 0x%08lx (endoff: 0x%08lx)\n",
3820 linkedit->dataoff, linkedit->datasize,
3821 linkedit->dataoff + linkedit->datasize);
3822 break;
3823 }
3824 case BFD_MACH_O_LC_SUB_FRAMEWORK:
3825 case BFD_MACH_O_LC_SUB_UMBRELLA:
3826 case BFD_MACH_O_LC_SUB_LIBRARY:
3827 case BFD_MACH_O_LC_SUB_CLIENT:
3828 case BFD_MACH_O_LC_RPATH:
3829 {
3830 bfd_mach_o_str_command *str = &cmd->command.str;
3831 fprintf (file, " %s\n", str->str);
3832 break;
3833 }
3834 case BFD_MACH_O_LC_THREAD:
3835 case BFD_MACH_O_LC_UNIXTHREAD:
3836 {
3837 bfd_mach_o_thread_command *thread = &cmd->command.thread;
3838 unsigned int j;
3839 bfd_mach_o_backend_data *bed = bfd_mach_o_get_backend_data (abfd);
3840
3841 fprintf (file, " nflavours: %lu\n", thread->nflavours);
3842 for (j = 0; j < thread->nflavours; j++)
3843 {
3844 bfd_mach_o_thread_flavour *flavour = &thread->flavours[j];
3845
3846 fprintf (file, " %2u: flavour: 0x%08lx offset: 0x%08lx"
3847 " size: 0x%08lx\n",
3848 j, flavour->flavour, flavour->offset,
3849 flavour->size);
3850 if (bed->_bfd_mach_o_print_thread)
3851 {
3852 char *buf = bfd_malloc (flavour->size);
3853
3854 if (buf
3855 && bfd_seek (abfd, flavour->offset, SEEK_SET) == 0
3856 && (bfd_bread (buf, flavour->size, abfd)
3857 == flavour->size))
3858 (*bed->_bfd_mach_o_print_thread)(abfd, flavour,
3859 file, buf);
3860 free (buf);
3861 }
3862 }
3863 break;
3864 }
3865 case BFD_MACH_O_LC_DYLD_INFO:
3866 fprintf (file, "\n");
3867 bfd_mach_o_print_dyld_info (abfd, cmd, file);
3868 break;
3869 default:
3870 fprintf (file, "\n");
3871 break;
3872 }
3873 fputc ('\n', file);
3874 }
3875
3876 bfd_mach_o_print_section_map (abfd, file);
3877
3878 return TRUE;
3879 }
3880
3881 int
3882 bfd_mach_o_core_fetch_environment (bfd *abfd,
3883 unsigned char **rbuf,
3884 unsigned int *rlen)
3885 {
3886 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
3887 unsigned long stackaddr = bfd_mach_o_stack_addr (mdata->header.cputype);
3888 unsigned int i = 0;
3889
3890 for (i = 0; i < mdata->header.ncmds; i++)
3891 {
3892 bfd_mach_o_load_command *cur = &mdata->commands[i];
3893 bfd_mach_o_segment_command *seg = NULL;
3894
3895 if (cur->type != BFD_MACH_O_LC_SEGMENT)
3896 continue;
3897
3898 seg = &cur->command.segment;
3899
3900 if ((seg->vmaddr + seg->vmsize) == stackaddr)
3901 {
3902 unsigned long start = seg->fileoff;
3903 unsigned long end = seg->fileoff + seg->filesize;
3904 unsigned char *buf = bfd_malloc (1024);
3905 unsigned long size = 1024;
3906
3907 for (;;)
3908 {
3909 bfd_size_type nread = 0;
3910 unsigned long offset;
3911 int found_nonnull = 0;
3912
3913 if (size > (end - start))
3914 size = (end - start);
3915
3916 buf = bfd_realloc_or_free (buf, size);
3917 if (buf == NULL)
3918 return -1;
3919
3920 if (bfd_seek (abfd, end - size, SEEK_SET) != 0)
3921 {
3922 free (buf);
3923 return -1;
3924 }
3925
3926 nread = bfd_bread (buf, size, abfd);
3927
3928 if (nread != size)
3929 {
3930 free (buf);
3931 return -1;
3932 }
3933
3934 for (offset = 4; offset <= size; offset += 4)
3935 {
3936 unsigned long val;
3937
3938 val = *((unsigned long *) (buf + size - offset));
3939 if (! found_nonnull)
3940 {
3941 if (val != 0)
3942 found_nonnull = 1;
3943 }
3944 else if (val == 0x0)
3945 {
3946 unsigned long bottom;
3947 unsigned long top;
3948
3949 bottom = seg->fileoff + seg->filesize - offset;
3950 top = seg->fileoff + seg->filesize - 4;
3951 *rbuf = bfd_malloc (top - bottom);
3952 *rlen = top - bottom;
3953
3954 memcpy (*rbuf, buf + size - *rlen, *rlen);
3955 free (buf);
3956 return 0;
3957 }
3958 }
3959
3960 if (size == (end - start))
3961 break;
3962
3963 size *= 2;
3964 }
3965
3966 free (buf);
3967 }
3968 }
3969
3970 return -1;
3971 }
3972
3973 char *
3974 bfd_mach_o_core_file_failing_command (bfd *abfd)
3975 {
3976 unsigned char *buf = NULL;
3977 unsigned int len = 0;
3978 int ret = -1;
3979
3980 ret = bfd_mach_o_core_fetch_environment (abfd, &buf, &len);
3981 if (ret < 0)
3982 return NULL;
3983
3984 return (char *) buf;
3985 }
3986
3987 int
3988 bfd_mach_o_core_file_failing_signal (bfd *abfd ATTRIBUTE_UNUSED)
3989 {
3990 return 0;
3991 }
3992
3993 #define bfd_mach_o_bfd_reloc_type_lookup _bfd_norelocs_bfd_reloc_type_lookup
3994 #define bfd_mach_o_bfd_reloc_name_lookup _bfd_norelocs_bfd_reloc_name_lookup
3995
3996 #define bfd_mach_o_swap_reloc_in NULL
3997 #define bfd_mach_o_swap_reloc_out NULL
3998 #define bfd_mach_o_print_thread NULL
3999
4000 #define TARGET_NAME mach_o_be_vec
4001 #define TARGET_STRING "mach-o-be"
4002 #define TARGET_ARCHITECTURE bfd_arch_unknown
4003 #define TARGET_BIG_ENDIAN 1
4004 #define TARGET_ARCHIVE 0
4005 #include "mach-o-target.c"
4006
4007 #undef TARGET_NAME
4008 #undef TARGET_STRING
4009 #undef TARGET_ARCHITECTURE
4010 #undef TARGET_BIG_ENDIAN
4011 #undef TARGET_ARCHIVE
4012
4013 #define TARGET_NAME mach_o_le_vec
4014 #define TARGET_STRING "mach-o-le"
4015 #define TARGET_ARCHITECTURE bfd_arch_unknown
4016 #define TARGET_BIG_ENDIAN 0
4017 #define TARGET_ARCHIVE 0
4018
4019 #include "mach-o-target.c"
4020
4021 #undef TARGET_NAME
4022 #undef TARGET_STRING
4023 #undef TARGET_ARCHITECTURE
4024 #undef TARGET_BIG_ENDIAN
4025 #undef TARGET_ARCHIVE
4026
4027 /* Not yet handled: creating an archive. */
4028 #define bfd_mach_o_mkarchive _bfd_noarchive_mkarchive
4029
4030 /* Not used. */
4031 #define bfd_mach_o_read_ar_hdr _bfd_noarchive_read_ar_hdr
4032 #define bfd_mach_o_write_ar_hdr _bfd_noarchive_write_ar_hdr
4033 #define bfd_mach_o_slurp_armap _bfd_noarchive_slurp_armap
4034 #define bfd_mach_o_slurp_extended_name_table _bfd_noarchive_slurp_extended_name_table
4035 #define bfd_mach_o_construct_extended_name_table _bfd_noarchive_construct_extended_name_table
4036 #define bfd_mach_o_truncate_arname _bfd_noarchive_truncate_arname
4037 #define bfd_mach_o_write_armap _bfd_noarchive_write_armap
4038 #define bfd_mach_o_get_elt_at_index _bfd_noarchive_get_elt_at_index
4039 #define bfd_mach_o_generic_stat_arch_elt _bfd_noarchive_generic_stat_arch_elt
4040 #define bfd_mach_o_update_armap_timestamp _bfd_noarchive_update_armap_timestamp
4041
4042 #define TARGET_NAME mach_o_fat_vec
4043 #define TARGET_STRING "mach-o-fat"
4044 #define TARGET_ARCHITECTURE bfd_arch_unknown
4045 #define TARGET_BIG_ENDIAN 1
4046 #define TARGET_ARCHIVE 1
4047
4048 #include "mach-o-target.c"
4049
4050 #undef TARGET_NAME
4051 #undef TARGET_STRING
4052 #undef TARGET_ARCHITECTURE
4053 #undef TARGET_BIG_ENDIAN
4054 #undef TARGET_ARCHIVE