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2009-12-15 Tristan Gingold <gingold@adacore.com>
[binutils.git] / bfd / mach-o.c
blobab4ee742b6b6e9fe591b7d9792c44867e33f8099
1 /* Mach-O support for BFD.
2 Copyright 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009
3 Free Software Foundation, Inc.
4
5 This file is part of BFD, the Binary File Descriptor library.
6
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 3 of the License, or
10 (at your option) any later version.
11
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
16
17 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the Free Software
19 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
20 MA 02110-1301, USA. */
21
22 #include "sysdep.h"
23 #include "mach-o.h"
24 #include "bfd.h"
25 #include "libbfd.h"
26 #include "libiberty.h"
27 #include "aout/stab_gnu.h"
28 #include <ctype.h>
29
30 #define bfd_mach_o_object_p bfd_mach_o_gen_object_p
31 #define bfd_mach_o_core_p bfd_mach_o_gen_core_p
32 #define bfd_mach_o_mkobject bfd_false
33
34 #define FILE_ALIGN(off, algn) \
35 (((off) + ((file_ptr) 1 << (algn)) - 1) & ((file_ptr) -1 << (algn)))
36
37 static int bfd_mach_o_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 sym = syms + num;
709 else
710 {
711 BFD_ASSERT (num != 0);
712 BFD_ASSERT (num <= mdata->nsects);
713 sym = mdata->sections[num - 1]->bfdsection->symbol_ptr_ptr;
714 }
715 res->sym_ptr_ptr = sym;
716 reloc.r_type = BFD_MACH_O_GET_R_TYPE (symnum);
717 reloc.r_length = BFD_MACH_O_GET_R_LENGTH (symnum);
718 reloc.r_pcrel = (symnum & BFD_MACH_O_R_PCREL) ? 1 : 0;
719 reloc.r_scattered = 0;
720 }
721
722 if (!(*bed->_bfd_mach_o_swap_reloc_in)(res, &reloc))
723 return -1;
724 return 0;
725 }
726
727 static int
728 bfd_mach_o_canonicalize_relocs (bfd *abfd, unsigned long filepos,
729 unsigned long count,
730 arelent *res, asymbol **syms)
731 {
732 unsigned long i;
733 char *native_relocs;
734 bfd_size_type native_size;
735
736 /* Allocate and read relocs. */
737 native_size = count * BFD_MACH_O_RELENT_SIZE;
738 native_relocs = bfd_malloc (native_size);
739 if (native_relocs == NULL)
740 return -1;
741
742 if (bfd_seek (abfd, filepos, SEEK_SET) != 0
743 || bfd_bread (native_relocs, native_size, abfd) != native_size)
744 goto err;
745
746 for (i = 0; i < count; i++)
747 {
748 char *buf = native_relocs + BFD_MACH_O_RELENT_SIZE * i;
749
750 if (bfd_mach_o_canonicalize_one_reloc (abfd, buf, &res[i], syms) < 0)
751 goto err;
752 }
753 free (native_relocs);
754 return i;
755 err:
756 free (native_relocs);
757 return -1;
758 }
759
760 long
761 bfd_mach_o_canonicalize_reloc (bfd *abfd, asection *asect,
762 arelent **rels, asymbol **syms)
763 {
764 bfd_mach_o_backend_data *bed = bfd_mach_o_get_backend_data (abfd);
765 unsigned long i;
766 arelent *res;
767
768 if (asect->reloc_count == 0)
769 return 0;
770
771 /* No need to go further if we don't know how to read relocs. */
772 if (bed->_bfd_mach_o_swap_reloc_in == NULL)
773 return 0;
774
775 res = bfd_malloc (asect->reloc_count * sizeof (arelent));
776 if (res == NULL)
777 return -1;
778
779 if (bfd_mach_o_canonicalize_relocs (abfd, asect->rel_filepos,
780 asect->reloc_count, res, syms) < 0)
781 {
782 free (res);
783 return -1;
784 }
785
786 for (i = 0; i < asect->reloc_count; i++)
787 rels[i] = &res[i];
788 rels[i] = NULL;
789 asect->relocation = res;
790
791 return i;
792 }
793
794 long
795 bfd_mach_o_get_dynamic_reloc_upper_bound (bfd *abfd)
796 {
797 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
798
799 if (mdata->dysymtab == NULL)
800 return 1;
801 return (mdata->dysymtab->nextrel + mdata->dysymtab->nlocrel)
802 * sizeof (arelent *);
803 }
804
805 long
806 bfd_mach_o_canonicalize_dynamic_reloc (bfd *abfd, arelent **rels,
807 struct bfd_symbol **syms)
808 {
809 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
810 bfd_mach_o_dysymtab_command *dysymtab = mdata->dysymtab;
811 bfd_mach_o_backend_data *bed = bfd_mach_o_get_backend_data (abfd);
812 unsigned long i;
813 arelent *res;
814
815 if (dysymtab == NULL)
816 return 0;
817 if (dysymtab->nextrel == 0 && dysymtab->nlocrel == 0)
818 return 0;
819
820 /* No need to go further if we don't know how to read relocs. */
821 if (bed->_bfd_mach_o_swap_reloc_in == NULL)
822 return 0;
823
824 res = bfd_malloc ((dysymtab->nextrel + dysymtab->nlocrel) * sizeof (arelent));
825 if (res == NULL)
826 return -1;
827
828 if (bfd_mach_o_canonicalize_relocs (abfd, dysymtab->extreloff,
829 dysymtab->nextrel, res, syms) < 0)
830 {
831 free (res);
832 return -1;
833 }
834
835 if (bfd_mach_o_canonicalize_relocs (abfd, dysymtab->locreloff,
836 dysymtab->nlocrel,
837 res + dysymtab->nextrel, syms) < 0)
838 {
839 free (res);
840 return -1;
841 }
842
843 for (i = 0; i < dysymtab->nextrel + dysymtab->nlocrel; i++)
844 rels[i] = &res[i];
845 rels[i] = NULL;
846 return i;
847 }
848
849 static bfd_boolean
850 bfd_mach_o_write_relocs (bfd *abfd, bfd_mach_o_section *section)
851 {
852 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
853 unsigned int i;
854 arelent **entries;
855 asection *sec;
856 bfd_mach_o_backend_data *bed = bfd_mach_o_get_backend_data (abfd);
857
858 sec = section->bfdsection;
859 if (sec->reloc_count == 0)
860 return TRUE;
861
862 if (bed->_bfd_mach_o_swap_reloc_out == NULL)
863 return TRUE;
864
865 /* Allocate relocation room. */
866 mdata->filelen = FILE_ALIGN(mdata->filelen, 2);
867 section->nreloc = sec->reloc_count;
868 sec->rel_filepos = mdata->filelen;
869 section->reloff = sec->rel_filepos;
870 mdata->filelen += sec->reloc_count * BFD_MACH_O_RELENT_SIZE;
871
872 if (bfd_seek (abfd, section->reloff, SEEK_SET) != 0)
873 return FALSE;
874
875 /* Convert and write. */
876 entries = section->bfdsection->orelocation;
877 for (i = 0; i < section->nreloc; i++)
878 {
879 arelent *rel = entries[i];
880 char buf[8];
881 bfd_mach_o_reloc_info info, *pinfo = &info;
882
883 /* Convert relocation to an intermediate representation. */
884 if (!(*bed->_bfd_mach_o_swap_reloc_out) (rel, pinfo))
885 return FALSE;
886
887 /* Lower the relocation info. */
888 if (pinfo->r_scattered)
889 {
890 unsigned long v;
891
892 v = BFD_MACH_O_SR_SCATTERED
893 | (pinfo->r_pcrel ? BFD_MACH_O_SR_PCREL : 0)
894 | BFD_MACH_O_SET_SR_LENGTH(pinfo->r_length)
895 | BFD_MACH_O_SET_SR_TYPE(pinfo->r_type)
896 | BFD_MACH_O_SET_SR_ADDRESS(pinfo->r_address);
897 bfd_put_32 (abfd, v, buf);
898 bfd_put_32 (abfd, pinfo->r_value, buf + 4);
899 }
900 else
901 {
902 unsigned long v;
903
904 bfd_put_32 (abfd, pinfo->r_address, buf);
905 v = BFD_MACH_O_SET_R_SYMBOLNUM (pinfo->r_value)
906 | (pinfo->r_pcrel ? BFD_MACH_O_R_PCREL : 0)
907 | BFD_MACH_O_SET_R_LENGTH (pinfo->r_length)
908 | (pinfo->r_extern ? BFD_MACH_O_R_EXTERN : 0)
909 | BFD_MACH_O_SET_R_TYPE (pinfo->r_type);
910 bfd_put_32 (abfd, v, buf + 4);
911 }
912
913 if (bfd_bwrite ((void *) buf, BFD_MACH_O_RELENT_SIZE, abfd)
914 != BFD_MACH_O_RELENT_SIZE)
915 return FALSE;
916 }
917 return TRUE;
918 }
919
920 static int
921 bfd_mach_o_write_section_32 (bfd *abfd, bfd_mach_o_section *section)
922 {
923 unsigned char buf[BFD_MACH_O_SECTION_SIZE];
924
925 memcpy (buf, section->sectname, 16);
926 memcpy (buf + 16, section->segname, 16);
927 bfd_h_put_32 (abfd, section->addr, buf + 32);
928 bfd_h_put_32 (abfd, section->size, buf + 36);
929 bfd_h_put_32 (abfd, section->offset, buf + 40);
930 bfd_h_put_32 (abfd, section->align, buf + 44);
931 bfd_h_put_32 (abfd, section->reloff, buf + 48);
932 bfd_h_put_32 (abfd, section->nreloc, buf + 52);
933 bfd_h_put_32 (abfd, section->flags, buf + 56);
934 bfd_h_put_32 (abfd, section->reserved1, buf + 60);
935 bfd_h_put_32 (abfd, section->reserved2, buf + 64);
936
937 if (bfd_bwrite ((void *) buf, BFD_MACH_O_SECTION_SIZE, abfd)
938 != BFD_MACH_O_SECTION_SIZE)
939 return -1;
940
941 return 0;
942 }
943
944 static int
945 bfd_mach_o_write_section_64 (bfd *abfd, bfd_mach_o_section *section)
946 {
947 unsigned char buf[BFD_MACH_O_SECTION_64_SIZE];
948
949 memcpy (buf, section->sectname, 16);
950 memcpy (buf + 16, section->segname, 16);
951 bfd_h_put_64 (abfd, section->addr, buf + 32);
952 bfd_h_put_64 (abfd, section->size, buf + 40);
953 bfd_h_put_32 (abfd, section->offset, buf + 48);
954 bfd_h_put_32 (abfd, section->align, buf + 52);
955 bfd_h_put_32 (abfd, section->reloff, buf + 56);
956 bfd_h_put_32 (abfd, section->nreloc, buf + 60);
957 bfd_h_put_32 (abfd, section->flags, buf + 64);
958 bfd_h_put_32 (abfd, section->reserved1, buf + 68);
959 bfd_h_put_32 (abfd, section->reserved2, buf + 72);
960 bfd_h_put_32 (abfd, section->reserved3, buf + 76);
961
962 if (bfd_bwrite ((void *) buf, BFD_MACH_O_SECTION_64_SIZE, abfd)
963 != BFD_MACH_O_SECTION_64_SIZE)
964 return -1;
965
966 return 0;
967 }
968
969 static int
970 bfd_mach_o_write_segment_32 (bfd *abfd, bfd_mach_o_load_command *command)
971 {
972 unsigned char buf[BFD_MACH_O_LC_SEGMENT_SIZE];
973 bfd_mach_o_segment_command *seg = &command->command.segment;
974 unsigned long i;
975
976 BFD_ASSERT (command->type == BFD_MACH_O_LC_SEGMENT);
977
978 for (i = 0; i < seg->nsects; i++)
979 if (!bfd_mach_o_write_relocs (abfd, &seg->sections[i]))
980 return -1;
981
982 memcpy (buf, seg->segname, 16);
983 bfd_h_put_32 (abfd, seg->vmaddr, buf + 16);
984 bfd_h_put_32 (abfd, seg->vmsize, buf + 20);
985 bfd_h_put_32 (abfd, seg->fileoff, buf + 24);
986 bfd_h_put_32 (abfd, seg->filesize, buf + 28);
987 bfd_h_put_32 (abfd, seg->maxprot, buf + 32);
988 bfd_h_put_32 (abfd, seg->initprot, buf + 36);
989 bfd_h_put_32 (abfd, seg->nsects, buf + 40);
990 bfd_h_put_32 (abfd, seg->flags, buf + 44);
991
992 if (bfd_seek (abfd, command->offset + 8, SEEK_SET) != 0
993 || (bfd_bwrite ((void *) buf, BFD_MACH_O_LC_SEGMENT_SIZE - 8, abfd)
994 != BFD_MACH_O_LC_SEGMENT_SIZE - 8))
995 return -1;
996
997 for (i = 0; i < seg->nsects; i++)
998 if (bfd_mach_o_write_section_32 (abfd, &seg->sections[i]))
999 return -1;
1000
1001 return 0;
1002 }
1003
1004 static int
1005 bfd_mach_o_write_segment_64 (bfd *abfd, bfd_mach_o_load_command *command)
1006 {
1007 unsigned char buf[BFD_MACH_O_LC_SEGMENT_64_SIZE];
1008 bfd_mach_o_segment_command *seg = &command->command.segment;
1009 unsigned long i;
1010
1011 BFD_ASSERT (command->type == BFD_MACH_O_LC_SEGMENT_64);
1012
1013 for (i = 0; i < seg->nsects; i++)
1014 if (!bfd_mach_o_write_relocs (abfd, &seg->sections[i]))
1015 return -1;
1016
1017 memcpy (buf, seg->segname, 16);
1018 bfd_h_put_64 (abfd, seg->vmaddr, buf + 16);
1019 bfd_h_put_64 (abfd, seg->vmsize, buf + 24);
1020 bfd_h_put_64 (abfd, seg->fileoff, buf + 32);
1021 bfd_h_put_64 (abfd, seg->filesize, buf + 40);
1022 bfd_h_put_32 (abfd, seg->maxprot, buf + 48);
1023 bfd_h_put_32 (abfd, seg->initprot, buf + 52);
1024 bfd_h_put_32 (abfd, seg->nsects, buf + 56);
1025 bfd_h_put_32 (abfd, seg->flags, buf + 60);
1026
1027 if (bfd_seek (abfd, command->offset + 8, SEEK_SET) != 0
1028 || (bfd_bwrite ((void *) buf, BFD_MACH_O_LC_SEGMENT_64_SIZE - 8, abfd)
1029 != BFD_MACH_O_LC_SEGMENT_64_SIZE - 8))
1030 return -1;
1031
1032 for (i = 0; i < seg->nsects; i++)
1033 if (bfd_mach_o_write_section_64 (abfd, &seg->sections[i]))
1034 return -1;
1035
1036 return 0;
1037 }
1038
1039 static bfd_boolean
1040 bfd_mach_o_write_symtab (bfd *abfd, bfd_mach_o_load_command *command)
1041 {
1042 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
1043 bfd_mach_o_symtab_command *sym = &command->command.symtab;
1044 unsigned char buf[16];
1045 unsigned long i;
1046 unsigned int wide = bfd_mach_o_wide_p (abfd);
1047 unsigned int symlen = wide ? BFD_MACH_O_NLIST_64_SIZE : BFD_MACH_O_NLIST_SIZE;
1048 struct bfd_strtab_hash *strtab;
1049 asymbol **symbols = bfd_get_outsymbols (abfd);
1050
1051 BFD_ASSERT (command->type == BFD_MACH_O_LC_SYMTAB);
1052
1053 /* Write the symbols first. */
1054 mdata->filelen = FILE_ALIGN(mdata->filelen, wide ? 3 : 2);
1055 sym->symoff = mdata->filelen;
1056 if (bfd_seek (abfd, sym->symoff, SEEK_SET) != 0)
1057 return FALSE;
1058
1059 sym->nsyms = bfd_get_symcount (abfd);
1060 mdata->filelen += sym->nsyms * symlen;
1061
1062 strtab = _bfd_stringtab_init ();
1063 if (strtab == NULL)
1064 return FALSE;
1065
1066 for (i = 0; i < sym->nsyms; i++)
1067 {
1068 bfd_size_type str_index;
1069 bfd_mach_o_asymbol *s = (bfd_mach_o_asymbol *)symbols[i];
1070
1071 /* Compute name index. */
1072 /* An index of 0 always means the empty string. */
1073 if (s->symbol.name == 0 || s->symbol.name[0] == '\0')
1074 str_index = 0;
1075 else
1076 {
1077 str_index = _bfd_stringtab_add (strtab, s->symbol.name, TRUE, FALSE);
1078 if (str_index == (bfd_size_type) -1)
1079 goto err;
1080 }
1081 bfd_h_put_32 (abfd, str_index, buf);
1082 bfd_h_put_8 (abfd, s->n_type, buf + 4);
1083 bfd_h_put_8 (abfd, s->n_sect, buf + 5);
1084 bfd_h_put_16 (abfd, s->n_desc, buf + 6);
1085 if (wide)
1086 bfd_h_put_64 (abfd, s->symbol.section->vma + s->symbol.value, buf + 8);
1087 else
1088 bfd_h_put_32 (abfd, s->symbol.section->vma + s->symbol.value, buf + 8);
1089
1090 if (bfd_bwrite ((void *) buf, symlen, abfd) != symlen)
1091 goto err;
1092 }
1093 sym->strsize = _bfd_stringtab_size (strtab);
1094 sym->stroff = mdata->filelen;
1095 mdata->filelen += sym->strsize;
1096
1097 if (_bfd_stringtab_emit (abfd, strtab) != TRUE)
1098 goto err;
1099 _bfd_stringtab_free (strtab);
1100
1101 /* The command. */
1102 bfd_h_put_32 (abfd, sym->symoff, buf);
1103 bfd_h_put_32 (abfd, sym->nsyms, buf + 4);
1104 bfd_h_put_32 (abfd, sym->stroff, buf + 8);
1105 bfd_h_put_32 (abfd, sym->strsize, buf + 12);
1106
1107 if (bfd_seek (abfd, command->offset + 8, SEEK_SET) != 0
1108 || bfd_bwrite ((void *) buf, 16, abfd) != 16)
1109 return FALSE;
1110
1111 return TRUE;
1112
1113 err:
1114 _bfd_stringtab_free (strtab);
1115 return FALSE;
1116 }
1117
1118 /* Process the symbols and generate Mach-O specific fields.
1119 Number them. */
1120
1121 static bfd_boolean
1122 bfd_mach_o_mangle_symbols (bfd *abfd)
1123 {
1124 unsigned long i;
1125 asymbol **symbols = bfd_get_outsymbols (abfd);
1126
1127 for (i = 0; i < bfd_get_symcount (abfd); i++)
1128 {
1129 bfd_mach_o_asymbol *s = (bfd_mach_o_asymbol *)symbols[i];
1130
1131 if (s->n_type == BFD_MACH_O_N_UNDF && !(s->symbol.flags & BSF_DEBUGGING))
1132 {
1133 /* As genuine Mach-O symbols type shouldn't be N_UNDF (undefined
1134 symbols should be N_UNDEF | N_EXT), we suppose the back-end
1135 values haven't been set. */
1136 if (s->symbol.section == bfd_abs_section_ptr)
1137 s->n_type = BFD_MACH_O_N_ABS;
1138 else if (s->symbol.section == bfd_und_section_ptr)
1139 {
1140 s->n_type = BFD_MACH_O_N_UNDF;
1141 if (s->symbol.flags & BSF_WEAK)
1142 s->n_desc |= BFD_MACH_O_N_WEAK_REF;
1143 }
1144 else if (s->symbol.section == bfd_com_section_ptr)
1145 s->n_type = BFD_MACH_O_N_UNDF | BFD_MACH_O_N_EXT;
1146 else
1147 s->n_type = BFD_MACH_O_N_SECT;
1148
1149 if (s->symbol.flags & BSF_GLOBAL)
1150 s->n_type |= BFD_MACH_O_N_EXT;
1151 }
1152
1153 /* Compute section index. */
1154 if (s->symbol.section != bfd_abs_section_ptr
1155 && s->symbol.section != bfd_und_section_ptr
1156 && s->symbol.section != bfd_com_section_ptr)
1157 s->n_sect = s->symbol.section->target_index;
1158
1159 /* Number symbols. */
1160 s->symbol.udata.i = i;
1161 }
1162 return TRUE;
1163 }
1164
1165 bfd_boolean
1166 bfd_mach_o_write_contents (bfd *abfd)
1167 {
1168 unsigned int i;
1169 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
1170
1171 if (mdata->header.ncmds == 0)
1172 if (!bfd_mach_o_build_commands (abfd))
1173 return FALSE;
1174
1175 /* Now write header information. */
1176 if (mdata->header.filetype == 0)
1177 {
1178 if (abfd->flags & EXEC_P)
1179 mdata->header.filetype = BFD_MACH_O_MH_EXECUTE;
1180 else if (abfd->flags & DYNAMIC)
1181 mdata->header.filetype = BFD_MACH_O_MH_DYLIB;
1182 else
1183 mdata->header.filetype = BFD_MACH_O_MH_OBJECT;
1184 }
1185 if (!bfd_mach_o_write_header (abfd, &mdata->header))
1186 return FALSE;
1187
1188 /* Assign a number to each symbols. */
1189 if (!bfd_mach_o_mangle_symbols (abfd))
1190 return FALSE;
1191
1192 for (i = 0; i < mdata->header.ncmds; i++)
1193 {
1194 unsigned char buf[8];
1195 bfd_mach_o_load_command *cur = &mdata->commands[i];
1196 unsigned long typeflag;
1197
1198 typeflag = cur->type | (cur->type_required ? BFD_MACH_O_LC_REQ_DYLD : 0);
1199
1200 bfd_h_put_32 (abfd, typeflag, buf);
1201 bfd_h_put_32 (abfd, cur->len, buf + 4);
1202
1203 if (bfd_seek (abfd, cur->offset, SEEK_SET) != 0
1204 || bfd_bwrite ((void *) buf, 8, abfd) != 8)
1205 return FALSE;
1206
1207 switch (cur->type)
1208 {
1209 case BFD_MACH_O_LC_SEGMENT:
1210 if (bfd_mach_o_write_segment_32 (abfd, cur) != 0)
1211 return FALSE;
1212 break;
1213 case BFD_MACH_O_LC_SEGMENT_64:
1214 if (bfd_mach_o_write_segment_64 (abfd, cur) != 0)
1215 return FALSE;
1216 break;
1217 case BFD_MACH_O_LC_SYMTAB:
1218 if (!bfd_mach_o_write_symtab (abfd, cur))
1219 return FALSE;
1220 break;
1221 case BFD_MACH_O_LC_SYMSEG:
1222 break;
1223 case BFD_MACH_O_LC_THREAD:
1224 case BFD_MACH_O_LC_UNIXTHREAD:
1225 if (bfd_mach_o_write_thread (abfd, cur) != 0)
1226 return FALSE;
1227 break;
1228 case BFD_MACH_O_LC_LOADFVMLIB:
1229 case BFD_MACH_O_LC_IDFVMLIB:
1230 case BFD_MACH_O_LC_IDENT:
1231 case BFD_MACH_O_LC_FVMFILE:
1232 case BFD_MACH_O_LC_PREPAGE:
1233 case BFD_MACH_O_LC_DYSYMTAB:
1234 case BFD_MACH_O_LC_LOAD_DYLIB:
1235 case BFD_MACH_O_LC_LOAD_WEAK_DYLIB:
1236 case BFD_MACH_O_LC_ID_DYLIB:
1237 case BFD_MACH_O_LC_REEXPORT_DYLIB:
1238 case BFD_MACH_O_LC_LOAD_DYLINKER:
1239 case BFD_MACH_O_LC_ID_DYLINKER:
1240 case BFD_MACH_O_LC_PREBOUND_DYLIB:
1241 case BFD_MACH_O_LC_ROUTINES:
1242 case BFD_MACH_O_LC_SUB_FRAMEWORK:
1243 break;
1244 default:
1245 fprintf (stderr,
1246 "unable to write unknown load command 0x%lx\n",
1247 (unsigned long) cur->type);
1248 return FALSE;
1249 }
1250 }
1251
1252 return TRUE;
1253 }
1254
1255 /* Build Mach-O load commands from the sections. */
1256
1257 bfd_boolean
1258 bfd_mach_o_build_commands (bfd *abfd)
1259 {
1260 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
1261 unsigned int wide = mach_o_wide_p (&mdata->header);
1262 bfd_mach_o_segment_command *seg;
1263 bfd_mach_o_section *sections;
1264 asection *sec;
1265 bfd_mach_o_load_command *cmd;
1266 bfd_mach_o_load_command *symtab_cmd;
1267 int target_index;
1268
1269 /* Return now if commands are already built. */
1270 if (mdata->header.ncmds)
1271 return FALSE;
1272
1273 /* Very simple version: 1 command (segment) containing all sections. */
1274 mdata->header.ncmds = 2;
1275 mdata->commands = bfd_alloc (abfd, mdata->header.ncmds
1276 * sizeof (bfd_mach_o_load_command));
1277 if (mdata->commands == NULL)
1278 return FALSE;
1279 cmd = &mdata->commands[0];
1280 seg = &cmd->command.segment;
1281
1282 seg->nsects = bfd_count_sections (abfd);
1283 sections = bfd_alloc (abfd, seg->nsects * sizeof (bfd_mach_o_section));
1284 if (sections == NULL)
1285 return FALSE;
1286 seg->sections = sections;
1287
1288 /* Set segment command. */
1289 if (wide)
1290 {
1291 cmd->type = BFD_MACH_O_LC_SEGMENT_64;
1292 cmd->offset = BFD_MACH_O_HEADER_64_SIZE;
1293 cmd->len = BFD_MACH_O_LC_SEGMENT_64_SIZE
1294 + BFD_MACH_O_SECTION_64_SIZE * seg->nsects;
1295 }
1296 else
1297 {
1298 cmd->type = BFD_MACH_O_LC_SEGMENT;
1299 cmd->offset = BFD_MACH_O_HEADER_SIZE;
1300 cmd->len = BFD_MACH_O_LC_SEGMENT_SIZE
1301 + BFD_MACH_O_SECTION_SIZE * seg->nsects;
1302 }
1303 cmd->type_required = FALSE;
1304 mdata->header.sizeofcmds = cmd->len;
1305 mdata->filelen = cmd->offset + cmd->len;
1306
1307 /* Set symtab command. */
1308 symtab_cmd = &mdata->commands[1];
1309
1310 symtab_cmd->type = BFD_MACH_O_LC_SYMTAB;
1311 symtab_cmd->offset = cmd->offset + cmd->len;
1312 symtab_cmd->len = 6 * 4;
1313 symtab_cmd->type_required = FALSE;
1314
1315 mdata->header.sizeofcmds += symtab_cmd->len;
1316 mdata->filelen += symtab_cmd->len;
1317
1318 /* Fill segment command. */
1319 memset (seg->segname, 0, sizeof (seg->segname));
1320 seg->vmaddr = 0;
1321 seg->fileoff = mdata->filelen;
1322 seg->filesize = 0;
1323 seg->maxprot = BFD_MACH_O_PROT_READ | BFD_MACH_O_PROT_WRITE
1324 | BFD_MACH_O_PROT_EXECUTE;
1325 seg->initprot = seg->maxprot;
1326 seg->flags = 0;
1327
1328 /* Create Mach-O sections. */
1329 target_index = 0;
1330 for (sec = abfd->sections; sec; sec = sec->next)
1331 {
1332 sections->bfdsection = sec;
1333 bfd_mach_o_convert_section_name_to_mach_o (abfd, sec, sections);
1334 sections->addr = bfd_get_section_vma (abfd, sec);
1335 sections->size = bfd_get_section_size (sec);
1336 sections->align = bfd_get_section_alignment (abfd, sec);
1337
1338 if (sections->size != 0)
1339 {
1340 mdata->filelen = FILE_ALIGN (mdata->filelen, sections->align);
1341 sections->offset = mdata->filelen;
1342 }
1343 else
1344 sections->offset = 0;
1345 sections->reloff = 0;
1346 sections->nreloc = 0;
1347 sections->reserved1 = 0;
1348 sections->reserved2 = 0;
1349 sections->reserved3 = 0;
1350
1351 sec->filepos = sections->offset;
1352 sec->target_index = ++target_index;
1353
1354 mdata->filelen += sections->size;
1355 sections++;
1356 }
1357 seg->filesize = mdata->filelen - seg->fileoff;
1358 seg->vmsize = seg->filesize;
1359
1360 return TRUE;
1361 }
1362
1363 /* Set the contents of a section. */
1364
1365 bfd_boolean
1366 bfd_mach_o_set_section_contents (bfd *abfd,
1367 asection *section,
1368 const void * location,
1369 file_ptr offset,
1370 bfd_size_type count)
1371 {
1372 file_ptr pos;
1373
1374 /* This must be done first, because bfd_set_section_contents is
1375 going to set output_has_begun to TRUE. */
1376 if (! abfd->output_has_begun && ! bfd_mach_o_build_commands (abfd))
1377 return FALSE;
1378
1379 if (count == 0)
1380 return TRUE;
1381
1382 pos = section->filepos + offset;
1383 if (bfd_seek (abfd, pos, SEEK_SET) != 0
1384 || bfd_bwrite (location, count, abfd) != count)
1385 return FALSE;
1386
1387 return TRUE;
1388 }
1389
1390 int
1391 bfd_mach_o_sizeof_headers (bfd *a ATTRIBUTE_UNUSED,
1392 struct bfd_link_info *info ATTRIBUTE_UNUSED)
1393 {
1394 return 0;
1395 }
1396
1397 /* Make an empty symbol. This is required only because
1398 bfd_make_section_anyway wants to create a symbol for the section. */
1399
1400 asymbol *
1401 bfd_mach_o_make_empty_symbol (bfd *abfd)
1402 {
1403 asymbol *new_symbol;
1404
1405 new_symbol = bfd_zalloc (abfd, sizeof (bfd_mach_o_asymbol));
1406 if (new_symbol == NULL)
1407 return new_symbol;
1408 new_symbol->the_bfd = abfd;
1409 new_symbol->udata.i = 0;
1410 return new_symbol;
1411 }
1412
1413 static bfd_boolean
1414 bfd_mach_o_read_header (bfd *abfd, bfd_mach_o_header *header)
1415 {
1416 unsigned char buf[32];
1417 unsigned int size;
1418 bfd_vma (*get32) (const void *) = NULL;
1419
1420 /* Just read the magic number. */
1421 if (bfd_seek (abfd, 0, SEEK_SET) != 0
1422 || bfd_bread ((void *) buf, 4, abfd) != 4)
1423 return FALSE;
1424
1425 if (bfd_getb32 (buf) == BFD_MACH_O_MH_MAGIC)
1426 {
1427 header->byteorder = BFD_ENDIAN_BIG;
1428 header->magic = BFD_MACH_O_MH_MAGIC;
1429 header->version = 1;
1430 get32 = bfd_getb32;
1431 }
1432 else if (bfd_getl32 (buf) == BFD_MACH_O_MH_MAGIC)
1433 {
1434 header->byteorder = BFD_ENDIAN_LITTLE;
1435 header->magic = BFD_MACH_O_MH_MAGIC;
1436 header->version = 1;
1437 get32 = bfd_getl32;
1438 }
1439 else if (bfd_getb32 (buf) == BFD_MACH_O_MH_MAGIC_64)
1440 {
1441 header->byteorder = BFD_ENDIAN_BIG;
1442 header->magic = BFD_MACH_O_MH_MAGIC_64;
1443 header->version = 2;
1444 get32 = bfd_getb32;
1445 }
1446 else if (bfd_getl32 (buf) == BFD_MACH_O_MH_MAGIC_64)
1447 {
1448 header->byteorder = BFD_ENDIAN_LITTLE;
1449 header->magic = BFD_MACH_O_MH_MAGIC_64;
1450 header->version = 2;
1451 get32 = bfd_getl32;
1452 }
1453 else
1454 {
1455 header->byteorder = BFD_ENDIAN_UNKNOWN;
1456 return FALSE;
1457 }
1458
1459 /* Once the size of the header is known, read the full header. */
1460 size = mach_o_wide_p (header) ?
1461 BFD_MACH_O_HEADER_64_SIZE : BFD_MACH_O_HEADER_SIZE;
1462
1463 if (bfd_seek (abfd, 0, SEEK_SET) != 0
1464 || bfd_bread ((void *) buf, size, abfd) != size)
1465 return FALSE;
1466
1467 header->cputype = (*get32) (buf + 4);
1468 header->cpusubtype = (*get32) (buf + 8);
1469 header->filetype = (*get32) (buf + 12);
1470 header->ncmds = (*get32) (buf + 16);
1471 header->sizeofcmds = (*get32) (buf + 20);
1472 header->flags = (*get32) (buf + 24);
1473
1474 if (mach_o_wide_p (header))
1475 header->reserved = (*get32) (buf + 28);
1476
1477 return TRUE;
1478 }
1479
1480 static asection *
1481 bfd_mach_o_make_bfd_section (bfd *abfd, bfd_mach_o_section *section,
1482 unsigned long prot)
1483 {
1484 asection *bfdsec;
1485 char *sname;
1486 flagword flags;
1487
1488 bfd_mach_o_convert_section_name_to_bfd (abfd, section, &sname, &flags);
1489 if (sname == NULL)
1490 return NULL;
1491
1492 if (flags == SEC_NO_FLAGS)
1493 {
1494 /* Try to guess flags. */
1495 if (section->flags & BFD_MACH_O_S_ATTR_DEBUG)
1496 flags = SEC_DEBUGGING;
1497 else
1498 {
1499 flags = SEC_ALLOC;
1500 if ((section->flags & BFD_MACH_O_SECTION_TYPE_MASK)
1501 != BFD_MACH_O_S_ZEROFILL)
1502 {
1503 flags |= SEC_LOAD;
1504 if (prot & BFD_MACH_O_PROT_EXECUTE)
1505 flags |= SEC_CODE;
1506 if (prot & BFD_MACH_O_PROT_WRITE)
1507 flags |= SEC_DATA;
1508 else if (prot & BFD_MACH_O_PROT_READ)
1509 flags |= SEC_READONLY;
1510 }
1511 }
1512 }
1513 else
1514 {
1515 if ((flags & SEC_DEBUGGING) == 0)
1516 flags |= SEC_ALLOC;
1517 }
1518
1519 if (section->offset != 0)
1520 flags |= SEC_HAS_CONTENTS;
1521 if (section->nreloc != 0)
1522 flags |= SEC_RELOC;
1523
1524 bfdsec = bfd_make_section_anyway_with_flags (abfd, sname, flags);
1525 if (bfdsec == NULL)
1526 return NULL;
1527
1528 bfdsec->vma = section->addr;
1529 bfdsec->lma = section->addr;
1530 bfdsec->size = section->size;
1531 bfdsec->filepos = section->offset;
1532 bfdsec->alignment_power = section->align;
1533 bfdsec->segment_mark = 0;
1534 bfdsec->reloc_count = section->nreloc;
1535 bfdsec->rel_filepos = section->reloff;
1536
1537 return bfdsec;
1538 }
1539
1540 static int
1541 bfd_mach_o_read_section_32 (bfd *abfd,
1542 bfd_mach_o_section *section,
1543 unsigned int offset,
1544 unsigned long prot)
1545 {
1546 unsigned char buf[BFD_MACH_O_SECTION_SIZE];
1547
1548 if (bfd_seek (abfd, offset, SEEK_SET) != 0
1549 || (bfd_bread ((void *) buf, BFD_MACH_O_SECTION_SIZE, abfd)
1550 != BFD_MACH_O_SECTION_SIZE))
1551 return -1;
1552
1553 memcpy (section->sectname, buf, 16);
1554 section->sectname[16] = '\0';
1555 memcpy (section->segname, buf + 16, 16);
1556 section->segname[16] = '\0';
1557 section->addr = bfd_h_get_32 (abfd, buf + 32);
1558 section->size = bfd_h_get_32 (abfd, buf + 36);
1559 section->offset = bfd_h_get_32 (abfd, buf + 40);
1560 section->align = bfd_h_get_32 (abfd, buf + 44);
1561 section->reloff = bfd_h_get_32 (abfd, buf + 48);
1562 section->nreloc = bfd_h_get_32 (abfd, buf + 52);
1563 section->flags = bfd_h_get_32 (abfd, buf + 56);
1564 section->reserved1 = bfd_h_get_32 (abfd, buf + 60);
1565 section->reserved2 = bfd_h_get_32 (abfd, buf + 64);
1566 section->reserved3 = 0;
1567 section->bfdsection = bfd_mach_o_make_bfd_section (abfd, section, prot);
1568
1569 if (section->bfdsection == NULL)
1570 return -1;
1571
1572 return 0;
1573 }
1574
1575 static int
1576 bfd_mach_o_read_section_64 (bfd *abfd,
1577 bfd_mach_o_section *section,
1578 unsigned int offset,
1579 unsigned long prot)
1580 {
1581 unsigned char buf[BFD_MACH_O_SECTION_64_SIZE];
1582
1583 if (bfd_seek (abfd, offset, SEEK_SET) != 0
1584 || (bfd_bread ((void *) buf, BFD_MACH_O_SECTION_64_SIZE, abfd)
1585 != BFD_MACH_O_SECTION_64_SIZE))
1586 return -1;
1587
1588 memcpy (section->sectname, buf, 16);
1589 section->sectname[16] = '\0';
1590 memcpy (section->segname, buf + 16, 16);
1591 section->segname[16] = '\0';
1592 section->addr = bfd_h_get_64 (abfd, buf + 32);
1593 section->size = bfd_h_get_64 (abfd, buf + 40);
1594 section->offset = bfd_h_get_32 (abfd, buf + 48);
1595 section->align = bfd_h_get_32 (abfd, buf + 52);
1596 section->reloff = bfd_h_get_32 (abfd, buf + 56);
1597 section->nreloc = bfd_h_get_32 (abfd, buf + 60);
1598 section->flags = bfd_h_get_32 (abfd, buf + 64);
1599 section->reserved1 = bfd_h_get_32 (abfd, buf + 68);
1600 section->reserved2 = bfd_h_get_32 (abfd, buf + 72);
1601 section->reserved3 = bfd_h_get_32 (abfd, buf + 76);
1602 section->bfdsection = bfd_mach_o_make_bfd_section (abfd, section, prot);
1603
1604 if (section->bfdsection == NULL)
1605 return -1;
1606
1607 return 0;
1608 }
1609
1610 static int
1611 bfd_mach_o_read_section (bfd *abfd,
1612 bfd_mach_o_section *section,
1613 unsigned int offset,
1614 unsigned long prot,
1615 unsigned int wide)
1616 {
1617 if (wide)
1618 return bfd_mach_o_read_section_64 (abfd, section, offset, prot);
1619 else
1620 return bfd_mach_o_read_section_32 (abfd, section, offset, prot);
1621 }
1622
1623 static int
1624 bfd_mach_o_read_symtab_symbol (bfd *abfd,
1625 bfd_mach_o_symtab_command *sym,
1626 bfd_mach_o_asymbol *s,
1627 unsigned long i)
1628 {
1629 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
1630 unsigned int wide = mach_o_wide_p (&mdata->header);
1631 unsigned int symwidth =
1632 wide ? BFD_MACH_O_NLIST_64_SIZE : BFD_MACH_O_NLIST_SIZE;
1633 unsigned int symoff = sym->symoff + (i * symwidth);
1634 unsigned char buf[16];
1635 unsigned char type = -1;
1636 unsigned char section = -1;
1637 short desc = -1;
1638 symvalue value = -1;
1639 unsigned long stroff = -1;
1640 unsigned int symtype = -1;
1641
1642 BFD_ASSERT (sym->strtab != NULL);
1643
1644 if (bfd_seek (abfd, symoff, SEEK_SET) != 0
1645 || bfd_bread ((void *) buf, symwidth, abfd) != symwidth)
1646 {
1647 fprintf (stderr, "bfd_mach_o_read_symtab_symbol: unable to read %d bytes at %lu\n",
1648 symwidth, (unsigned long) symoff);
1649 return -1;
1650 }
1651
1652 stroff = bfd_h_get_32 (abfd, buf);
1653 type = bfd_h_get_8 (abfd, buf + 4);
1654 symtype = type & BFD_MACH_O_N_TYPE;
1655 section = bfd_h_get_8 (abfd, buf + 5);
1656 desc = bfd_h_get_16 (abfd, buf + 6);
1657 if (wide)
1658 value = bfd_h_get_64 (abfd, buf + 8);
1659 else
1660 value = bfd_h_get_32 (abfd, buf + 8);
1661
1662 if (stroff >= sym->strsize)
1663 {
1664 fprintf (stderr, "bfd_mach_o_read_symtab_symbol: symbol name out of range (%lu >= %lu)\n",
1665 (unsigned long) stroff, (unsigned long) sym->strsize);
1666 return -1;
1667 }
1668
1669 s->symbol.the_bfd = abfd;
1670 s->symbol.name = sym->strtab + stroff;
1671 s->symbol.value = value;
1672 s->symbol.flags = 0x0;
1673 s->symbol.udata.i = 0;
1674 s->n_type = type;
1675 s->n_sect = section;
1676 s->n_desc = desc;
1677
1678 if (type & BFD_MACH_O_N_STAB)
1679 {
1680 s->symbol.flags |= BSF_DEBUGGING;
1681 s->symbol.section = bfd_und_section_ptr;
1682 switch (type)
1683 {
1684 case N_FUN:
1685 case N_STSYM:
1686 case N_LCSYM:
1687 case N_BNSYM:
1688 case N_SLINE:
1689 case N_ENSYM:
1690 case N_ECOMM:
1691 case N_ECOML:
1692 case N_GSYM:
1693 if ((section > 0) && (section <= mdata->nsects))
1694 {
1695 s->symbol.section = mdata->sections[section - 1]->bfdsection;
1696 s->symbol.value =
1697 s->symbol.value - mdata->sections[section - 1]->addr;
1698 }
1699 break;
1700 }
1701 }
1702 else
1703 {
1704 if (type & BFD_MACH_O_N_PEXT)
1705 s->symbol.flags |= BSF_GLOBAL;
1706
1707 if (type & BFD_MACH_O_N_EXT)
1708 s->symbol.flags |= BSF_GLOBAL;
1709
1710 if (!(type & (BFD_MACH_O_N_PEXT | BFD_MACH_O_N_EXT)))
1711 s->symbol.flags |= BSF_LOCAL;
1712
1713 switch (symtype)
1714 {
1715 case BFD_MACH_O_N_UNDF:
1716 if (type == (BFD_MACH_O_N_UNDF | BFD_MACH_O_N_EXT)
1717 && s->symbol.value != 0)
1718 {
1719 /* A common symbol. */
1720 s->symbol.section = bfd_com_section_ptr;
1721 s->symbol.flags = BSF_NO_FLAGS;
1722 }
1723 else
1724 {
1725 s->symbol.section = bfd_und_section_ptr;
1726 if (s->n_desc & BFD_MACH_O_N_WEAK_REF)
1727 s->symbol.flags |= BSF_WEAK;
1728 }
1729 break;
1730 case BFD_MACH_O_N_PBUD:
1731 s->symbol.section = bfd_und_section_ptr;
1732 break;
1733 case BFD_MACH_O_N_ABS:
1734 s->symbol.section = bfd_abs_section_ptr;
1735 break;
1736 case BFD_MACH_O_N_SECT:
1737 if ((section > 0) && (section <= mdata->nsects))
1738 {
1739 s->symbol.section = mdata->sections[section - 1]->bfdsection;
1740 s->symbol.value =
1741 s->symbol.value - mdata->sections[section - 1]->addr;
1742 }
1743 else
1744 {
1745 /* Mach-O uses 0 to mean "no section"; not an error. */
1746 if (section != 0)
1747 {
1748 fprintf (stderr, "bfd_mach_o_read_symtab_symbol: "
1749 "symbol \"%s\" specified invalid section %d (max %lu): setting to undefined\n",
1750 s->symbol.name, section, mdata->nsects);
1751 }
1752 s->symbol.section = bfd_und_section_ptr;
1753 }
1754 break;
1755 case BFD_MACH_O_N_INDR:
1756 fprintf (stderr, "bfd_mach_o_read_symtab_symbol: "
1757 "symbol \"%s\" is unsupported 'indirect' reference: setting to undefined\n",
1758 s->symbol.name);
1759 s->symbol.section = bfd_und_section_ptr;
1760 break;
1761 default:
1762 fprintf (stderr, "bfd_mach_o_read_symtab_symbol: "
1763 "symbol \"%s\" specified invalid type field 0x%x: setting to undefined\n",
1764 s->symbol.name, symtype);
1765 s->symbol.section = bfd_und_section_ptr;
1766 break;
1767 }
1768 }
1769
1770 return 0;
1771 }
1772
1773 static int
1774 bfd_mach_o_read_symtab_strtab (bfd *abfd)
1775 {
1776 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
1777 bfd_mach_o_symtab_command *sym = mdata->symtab;
1778
1779 /* Fail if there is no symtab. */
1780 if (sym == NULL)
1781 return -1;
1782
1783 /* Success if already loaded. */
1784 if (sym->strtab)
1785 return 0;
1786
1787 if (abfd->flags & BFD_IN_MEMORY)
1788 {
1789 struct bfd_in_memory *b;
1790
1791 b = (struct bfd_in_memory *) abfd->iostream;
1792
1793 if ((sym->stroff + sym->strsize) > b->size)
1794 {
1795 bfd_set_error (bfd_error_file_truncated);
1796 return -1;
1797 }
1798 sym->strtab = (char *) b->buffer + sym->stroff;
1799 }
1800 else
1801 {
1802 sym->strtab = bfd_alloc (abfd, sym->strsize);
1803 if (sym->strtab == NULL)
1804 return -1;
1805
1806 if (bfd_seek (abfd, sym->stroff, SEEK_SET) != 0
1807 || bfd_bread ((void *) sym->strtab, sym->strsize, abfd) != sym->strsize)
1808 {
1809 bfd_set_error (bfd_error_file_truncated);
1810 return -1;
1811 }
1812 }
1813
1814 return 0;
1815 }
1816
1817 static int
1818 bfd_mach_o_read_symtab_symbols (bfd *abfd)
1819 {
1820 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
1821 bfd_mach_o_symtab_command *sym = mdata->symtab;
1822 unsigned long i;
1823 int ret;
1824
1825 if (sym->symbols)
1826 return 0;
1827
1828 sym->symbols = bfd_alloc (abfd, sym->nsyms * sizeof (bfd_mach_o_asymbol));
1829
1830 if (sym->symbols == NULL)
1831 {
1832 fprintf (stderr, "bfd_mach_o_read_symtab_symbols: unable to allocate memory for symbols\n");
1833 return -1;
1834 }
1835
1836 ret = bfd_mach_o_read_symtab_strtab (abfd);
1837 if (ret != 0)
1838 return ret;
1839
1840 for (i = 0; i < sym->nsyms; i++)
1841 {
1842 ret = bfd_mach_o_read_symtab_symbol (abfd, sym, &sym->symbols[i], i);
1843 if (ret != 0)
1844 return ret;
1845 }
1846
1847 return 0;
1848 }
1849
1850 int
1851 bfd_mach_o_read_dysymtab_symbol (bfd *abfd,
1852 bfd_mach_o_dysymtab_command *dysym,
1853 bfd_mach_o_symtab_command *sym,
1854 bfd_mach_o_asymbol *s,
1855 unsigned long i)
1856 {
1857 unsigned long isymoff = dysym->indirectsymoff + (i * 4);
1858 unsigned long sym_index;
1859 unsigned char buf[4];
1860
1861 BFD_ASSERT (i < dysym->nindirectsyms);
1862
1863 if (bfd_seek (abfd, isymoff, SEEK_SET) != 0
1864 || bfd_bread ((void *) buf, 4, abfd) != 4)
1865 {
1866 fprintf (stderr, "bfd_mach_o_read_dysymtab_symbol: unable to read %lu bytes at %lu\n",
1867 (unsigned long) 4, isymoff);
1868 return -1;
1869 }
1870 sym_index = bfd_h_get_32 (abfd, buf);
1871
1872 return bfd_mach_o_read_symtab_symbol (abfd, sym, s, sym_index);
1873 }
1874
1875 static const char *
1876 bfd_mach_o_i386_flavour_string (unsigned int flavour)
1877 {
1878 switch ((int) flavour)
1879 {
1880 case BFD_MACH_O_x86_THREAD_STATE32: return "x86_THREAD_STATE32";
1881 case BFD_MACH_O_x86_FLOAT_STATE32: return "x86_FLOAT_STATE32";
1882 case BFD_MACH_O_x86_EXCEPTION_STATE32: return "x86_EXCEPTION_STATE32";
1883 case BFD_MACH_O_x86_THREAD_STATE64: return "x86_THREAD_STATE64";
1884 case BFD_MACH_O_x86_FLOAT_STATE64: return "x86_FLOAT_STATE64";
1885 case BFD_MACH_O_x86_EXCEPTION_STATE64: return "x86_EXCEPTION_STATE64";
1886 case BFD_MACH_O_x86_THREAD_STATE: return "x86_THREAD_STATE";
1887 case BFD_MACH_O_x86_FLOAT_STATE: return "x86_FLOAT_STATE";
1888 case BFD_MACH_O_x86_EXCEPTION_STATE: return "x86_EXCEPTION_STATE";
1889 case BFD_MACH_O_x86_DEBUG_STATE32: return "x86_DEBUG_STATE32";
1890 case BFD_MACH_O_x86_DEBUG_STATE64: return "x86_DEBUG_STATE64";
1891 case BFD_MACH_O_x86_DEBUG_STATE: return "x86_DEBUG_STATE";
1892 case BFD_MACH_O_x86_THREAD_STATE_NONE: return "x86_THREAD_STATE_NONE";
1893 default: return "UNKNOWN";
1894 }
1895 }
1896
1897 static const char *
1898 bfd_mach_o_ppc_flavour_string (unsigned int flavour)
1899 {
1900 switch ((int) flavour)
1901 {
1902 case BFD_MACH_O_PPC_THREAD_STATE: return "PPC_THREAD_STATE";
1903 case BFD_MACH_O_PPC_FLOAT_STATE: return "PPC_FLOAT_STATE";
1904 case BFD_MACH_O_PPC_EXCEPTION_STATE: return "PPC_EXCEPTION_STATE";
1905 case BFD_MACH_O_PPC_VECTOR_STATE: return "PPC_VECTOR_STATE";
1906 case BFD_MACH_O_PPC_THREAD_STATE64: return "PPC_THREAD_STATE64";
1907 case BFD_MACH_O_PPC_EXCEPTION_STATE64: return "PPC_EXCEPTION_STATE64";
1908 default: return "UNKNOWN";
1909 }
1910 }
1911
1912 static int
1913 bfd_mach_o_read_dylinker (bfd *abfd, bfd_mach_o_load_command *command)
1914 {
1915 bfd_mach_o_dylinker_command *cmd = &command->command.dylinker;
1916 unsigned char buf[4];
1917 unsigned int nameoff;
1918
1919 BFD_ASSERT ((command->type == BFD_MACH_O_LC_ID_DYLINKER)
1920 || (command->type == BFD_MACH_O_LC_LOAD_DYLINKER));
1921
1922 if (bfd_seek (abfd, command->offset + 8, SEEK_SET) != 0
1923 || bfd_bread ((void *) buf, 4, abfd) != 4)
1924 return -1;
1925
1926 nameoff = bfd_h_get_32 (abfd, buf + 0);
1927
1928 cmd->name_offset = command->offset + nameoff;
1929 cmd->name_len = command->len - nameoff;
1930 cmd->name_str = bfd_alloc (abfd, cmd->name_len);
1931 if (cmd->name_str == NULL)
1932 return -1;
1933 if (bfd_seek (abfd, cmd->name_offset, SEEK_SET) != 0
1934 || bfd_bread (cmd->name_str, cmd->name_len, abfd) != cmd->name_len)
1935 return -1;
1936 return 0;
1937 }
1938
1939 static int
1940 bfd_mach_o_read_dylib (bfd *abfd, bfd_mach_o_load_command *command)
1941 {
1942 bfd_mach_o_dylib_command *cmd = &command->command.dylib;
1943 unsigned char buf[16];
1944 unsigned int nameoff;
1945
1946 switch (command->type)
1947 {
1948 case BFD_MACH_O_LC_LOAD_DYLIB:
1949 case BFD_MACH_O_LC_LOAD_WEAK_DYLIB:
1950 case BFD_MACH_O_LC_ID_DYLIB:
1951 case BFD_MACH_O_LC_REEXPORT_DYLIB:
1952 break;
1953 default:
1954 BFD_FAIL ();
1955 return -1;
1956 }
1957
1958 if (bfd_seek (abfd, command->offset + 8, SEEK_SET) != 0
1959 || bfd_bread ((void *) buf, 16, abfd) != 16)
1960 return -1;
1961
1962 nameoff = bfd_h_get_32 (abfd, buf + 0);
1963 cmd->timestamp = bfd_h_get_32 (abfd, buf + 4);
1964 cmd->current_version = bfd_h_get_32 (abfd, buf + 8);
1965 cmd->compatibility_version = bfd_h_get_32 (abfd, buf + 12);
1966
1967 cmd->name_offset = command->offset + nameoff;
1968 cmd->name_len = command->len - nameoff;
1969 cmd->name_str = bfd_alloc (abfd, cmd->name_len);
1970 if (cmd->name_str == NULL)
1971 return -1;
1972 if (bfd_seek (abfd, cmd->name_offset, SEEK_SET) != 0
1973 || bfd_bread (cmd->name_str, cmd->name_len, abfd) != cmd->name_len)
1974 return -1;
1975 return 0;
1976 }
1977
1978 static int
1979 bfd_mach_o_read_prebound_dylib (bfd *abfd ATTRIBUTE_UNUSED,
1980 bfd_mach_o_load_command *command ATTRIBUTE_UNUSED)
1981 {
1982 /* bfd_mach_o_prebound_dylib_command *cmd = &command->command.prebound_dylib; */
1983
1984 BFD_ASSERT (command->type == BFD_MACH_O_LC_PREBOUND_DYLIB);
1985 return 0;
1986 }
1987
1988 static int
1989 bfd_mach_o_read_thread (bfd *abfd, bfd_mach_o_load_command *command)
1990 {
1991 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
1992 bfd_mach_o_thread_command *cmd = &command->command.thread;
1993 unsigned char buf[8];
1994 unsigned int offset;
1995 unsigned int nflavours;
1996 unsigned int i;
1997
1998 BFD_ASSERT ((command->type == BFD_MACH_O_LC_THREAD)
1999 || (command->type == BFD_MACH_O_LC_UNIXTHREAD));
2000
2001 /* Count the number of threads. */
2002 offset = 8;
2003 nflavours = 0;
2004 while (offset != command->len)
2005 {
2006 if (offset >= command->len)
2007 return -1;
2008
2009 if (bfd_seek (abfd, command->offset + offset, SEEK_SET) != 0
2010 || bfd_bread ((void *) buf, 8, abfd) != 8)
2011 return -1;
2012
2013 offset += 8 + bfd_h_get_32 (abfd, buf + 4) * 4;
2014 nflavours++;
2015 }
2016
2017 /* Allocate threads. */
2018 cmd->flavours = bfd_alloc
2019 (abfd, nflavours * sizeof (bfd_mach_o_thread_flavour));
2020 if (cmd->flavours == NULL)
2021 return -1;
2022 cmd->nflavours = nflavours;
2023
2024 offset = 8;
2025 nflavours = 0;
2026 while (offset != command->len)
2027 {
2028 if (offset >= command->len)
2029 return -1;
2030
2031 if (nflavours >= cmd->nflavours)
2032 return -1;
2033
2034 if (bfd_seek (abfd, command->offset + offset, SEEK_SET) != 0
2035 || bfd_bread ((void *) buf, 8, abfd) != 8)
2036 return -1;
2037
2038 cmd->flavours[nflavours].flavour = bfd_h_get_32 (abfd, buf);
2039 cmd->flavours[nflavours].offset = command->offset + offset + 8;
2040 cmd->flavours[nflavours].size = bfd_h_get_32 (abfd, buf + 4) * 4;
2041 offset += cmd->flavours[nflavours].size + 8;
2042 nflavours++;
2043 }
2044
2045 for (i = 0; i < nflavours; i++)
2046 {
2047 asection *bfdsec;
2048 unsigned int snamelen;
2049 char *sname;
2050 const char *flavourstr;
2051 const char *prefix = "LC_THREAD";
2052 unsigned int j = 0;
2053
2054 switch (mdata->header.cputype)
2055 {
2056 case BFD_MACH_O_CPU_TYPE_POWERPC:
2057 case BFD_MACH_O_CPU_TYPE_POWERPC_64:
2058 flavourstr = bfd_mach_o_ppc_flavour_string (cmd->flavours[i].flavour);
2059 break;
2060 case BFD_MACH_O_CPU_TYPE_I386:
2061 case BFD_MACH_O_CPU_TYPE_X86_64:
2062 flavourstr = bfd_mach_o_i386_flavour_string (cmd->flavours[i].flavour);
2063 break;
2064 default:
2065 flavourstr = "UNKNOWN_ARCHITECTURE";
2066 break;
2067 }
2068
2069 snamelen = strlen (prefix) + 1 + 20 + 1 + strlen (flavourstr) + 1;
2070 sname = bfd_alloc (abfd, snamelen);
2071 if (sname == NULL)
2072 return -1;
2073
2074 for (;;)
2075 {
2076 sprintf (sname, "%s.%s.%u", prefix, flavourstr, j);
2077 if (bfd_get_section_by_name (abfd, sname) == NULL)
2078 break;
2079 j++;
2080 }
2081
2082 bfdsec = bfd_make_section_with_flags (abfd, sname, SEC_HAS_CONTENTS);
2083
2084 bfdsec->vma = 0;
2085 bfdsec->lma = 0;
2086 bfdsec->size = cmd->flavours[i].size;
2087 bfdsec->filepos = cmd->flavours[i].offset;
2088 bfdsec->alignment_power = 0x0;
2089
2090 cmd->section = bfdsec;
2091 }
2092
2093 return 0;
2094 }
2095
2096 static int
2097 bfd_mach_o_read_dysymtab (bfd *abfd, bfd_mach_o_load_command *command)
2098 {
2099 bfd_mach_o_dysymtab_command *cmd = &command->command.dysymtab;
2100 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
2101 unsigned char buf[72];
2102
2103 BFD_ASSERT (command->type == BFD_MACH_O_LC_DYSYMTAB);
2104
2105 if (bfd_seek (abfd, command->offset + 8, SEEK_SET) != 0
2106 || bfd_bread ((void *) buf, 72, abfd) != 72)
2107 return -1;
2108
2109 cmd->ilocalsym = bfd_h_get_32 (abfd, buf + 0);
2110 cmd->nlocalsym = bfd_h_get_32 (abfd, buf + 4);
2111 cmd->iextdefsym = bfd_h_get_32 (abfd, buf + 8);
2112 cmd->nextdefsym = bfd_h_get_32 (abfd, buf + 12);
2113 cmd->iundefsym = bfd_h_get_32 (abfd, buf + 16);
2114 cmd->nundefsym = bfd_h_get_32 (abfd, buf + 20);
2115 cmd->tocoff = bfd_h_get_32 (abfd, buf + 24);
2116 cmd->ntoc = bfd_h_get_32 (abfd, buf + 28);
2117 cmd->modtaboff = bfd_h_get_32 (abfd, buf + 32);
2118 cmd->nmodtab = bfd_h_get_32 (abfd, buf + 36);
2119 cmd->extrefsymoff = bfd_h_get_32 (abfd, buf + 40);
2120 cmd->nextrefsyms = bfd_h_get_32 (abfd, buf + 44);
2121 cmd->indirectsymoff = bfd_h_get_32 (abfd, buf + 48);
2122 cmd->nindirectsyms = bfd_h_get_32 (abfd, buf + 52);
2123 cmd->extreloff = bfd_h_get_32 (abfd, buf + 56);
2124 cmd->nextrel = bfd_h_get_32 (abfd, buf + 60);
2125 cmd->locreloff = bfd_h_get_32 (abfd, buf + 64);
2126 cmd->nlocrel = bfd_h_get_32 (abfd, buf + 68);
2127
2128 if (cmd->nmodtab != 0)
2129 {
2130 unsigned int i;
2131 int wide = bfd_mach_o_wide_p (abfd);
2132 unsigned int module_len = wide ? 56 : 52;
2133
2134 cmd->dylib_module =
2135 bfd_alloc (abfd, cmd->nmodtab * sizeof (bfd_mach_o_dylib_module));
2136 if (cmd->dylib_module == NULL)
2137 return -1;
2138
2139 if (bfd_seek (abfd, cmd->modtaboff, SEEK_SET) != 0)
2140 return -1;
2141
2142 for (i = 0; i < cmd->nmodtab; i++)
2143 {
2144 bfd_mach_o_dylib_module *module = &cmd->dylib_module[i];
2145 unsigned long v;
2146
2147 if (bfd_bread ((void *) buf, module_len, abfd) != module_len)
2148 return -1;
2149
2150 module->module_name_idx = bfd_h_get_32 (abfd, buf + 0);
2151 module->iextdefsym = bfd_h_get_32 (abfd, buf + 4);
2152 module->nextdefsym = bfd_h_get_32 (abfd, buf + 8);
2153 module->irefsym = bfd_h_get_32 (abfd, buf + 12);
2154 module->nrefsym = bfd_h_get_32 (abfd, buf + 16);
2155 module->ilocalsym = bfd_h_get_32 (abfd, buf + 20);
2156 module->nlocalsym = bfd_h_get_32 (abfd, buf + 24);
2157 module->iextrel = bfd_h_get_32 (abfd, buf + 28);
2158 module->nextrel = bfd_h_get_32 (abfd, buf + 32);
2159 v = bfd_h_get_32 (abfd, buf +36);
2160 module->iinit = v & 0xffff;
2161 module->iterm = (v >> 16) & 0xffff;
2162 v = bfd_h_get_32 (abfd, buf + 40);
2163 module->ninit = v & 0xffff;
2164 module->nterm = (v >> 16) & 0xffff;
2165 if (wide)
2166 {
2167 module->objc_module_info_size = bfd_h_get_32 (abfd, buf + 44);
2168 module->objc_module_info_addr = bfd_h_get_64 (abfd, buf + 48);
2169 }
2170 else
2171 {
2172 module->objc_module_info_addr = bfd_h_get_32 (abfd, buf + 44);
2173 module->objc_module_info_size = bfd_h_get_32 (abfd, buf + 48);
2174 }
2175 }
2176 }
2177
2178 if (cmd->ntoc != 0)
2179 {
2180 unsigned int i;
2181
2182 cmd->dylib_toc = bfd_alloc
2183 (abfd, cmd->ntoc * sizeof (bfd_mach_o_dylib_table_of_content));
2184 if (cmd->dylib_toc == NULL)
2185 return -1;
2186
2187 if (bfd_seek (abfd, cmd->tocoff, SEEK_SET) != 0)
2188 return -1;
2189
2190 for (i = 0; i < cmd->ntoc; i++)
2191 {
2192 bfd_mach_o_dylib_table_of_content *toc = &cmd->dylib_toc[i];
2193
2194 if (bfd_bread ((void *) buf, 8, abfd) != 8)
2195 return -1;
2196
2197 toc->symbol_index = bfd_h_get_32 (abfd, buf + 0);
2198 toc->module_index = bfd_h_get_32 (abfd, buf + 4);
2199 }
2200 }
2201
2202 if (cmd->nindirectsyms != 0)
2203 {
2204 unsigned int i;
2205
2206 cmd->indirect_syms = bfd_alloc
2207 (abfd, cmd->nindirectsyms * sizeof (unsigned int));
2208 if (cmd->indirect_syms == NULL)
2209 return -1;
2210
2211 if (bfd_seek (abfd, cmd->indirectsymoff, SEEK_SET) != 0)
2212 return -1;
2213
2214 for (i = 0; i < cmd->nindirectsyms; i++)
2215 {
2216 unsigned int *is = &cmd->indirect_syms[i];
2217
2218 if (bfd_bread ((void *) buf, 4, abfd) != 4)
2219 return -1;
2220
2221 *is = bfd_h_get_32 (abfd, buf + 0);
2222 }
2223 }
2224
2225 if (cmd->nextrefsyms != 0)
2226 {
2227 unsigned long v;
2228 unsigned int i;
2229
2230 cmd->ext_refs = bfd_alloc
2231 (abfd, cmd->nextrefsyms * sizeof (bfd_mach_o_dylib_reference));
2232 if (cmd->ext_refs == NULL)
2233 return -1;
2234
2235 if (bfd_seek (abfd, cmd->extrefsymoff, SEEK_SET) != 0)
2236 return -1;
2237
2238 for (i = 0; i < cmd->nextrefsyms; i++)
2239 {
2240 bfd_mach_o_dylib_reference *ref = &cmd->ext_refs[i];
2241
2242 if (bfd_bread ((void *) buf, 4, abfd) != 4)
2243 return -1;
2244
2245 /* Fields isym and flags are written as bit-fields, thus we need
2246 a specific processing for endianness. */
2247 v = bfd_h_get_32 (abfd, buf + 0);
2248 if (bfd_big_endian (abfd))
2249 {
2250 ref->isym = (v >> 8) & 0xffffff;
2251 ref->flags = v & 0xff;
2252 }
2253 else
2254 {
2255 ref->isym = v & 0xffffff;
2256 ref->flags = (v >> 24) & 0xff;
2257 }
2258 }
2259 }
2260
2261 if (mdata->dysymtab)
2262 return -1;
2263 mdata->dysymtab = cmd;
2264
2265 return 0;
2266 }
2267
2268 static int
2269 bfd_mach_o_read_symtab (bfd *abfd, bfd_mach_o_load_command *command)
2270 {
2271 bfd_mach_o_symtab_command *symtab = &command->command.symtab;
2272 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
2273 unsigned char buf[16];
2274
2275 BFD_ASSERT (command->type == BFD_MACH_O_LC_SYMTAB);
2276
2277 if (bfd_seek (abfd, command->offset + 8, SEEK_SET) != 0
2278 || bfd_bread ((void *) buf, 16, abfd) != 16)
2279 return -1;
2280
2281 symtab->symoff = bfd_h_get_32 (abfd, buf);
2282 symtab->nsyms = bfd_h_get_32 (abfd, buf + 4);
2283 symtab->stroff = bfd_h_get_32 (abfd, buf + 8);
2284 symtab->strsize = bfd_h_get_32 (abfd, buf + 12);
2285 symtab->symbols = NULL;
2286 symtab->strtab = NULL;
2287
2288 if (symtab->nsyms != 0)
2289 abfd->flags |= HAS_SYMS;
2290
2291 if (mdata->symtab)
2292 return -1;
2293 mdata->symtab = symtab;
2294 return 0;
2295 }
2296
2297 static int
2298 bfd_mach_o_read_uuid (bfd *abfd, bfd_mach_o_load_command *command)
2299 {
2300 bfd_mach_o_uuid_command *cmd = &command->command.uuid;
2301 asection *bfdsec;
2302 char *sname;
2303 static const char prefix[] = "LC_UUID";
2304
2305 BFD_ASSERT (command->type == BFD_MACH_O_LC_UUID);
2306
2307 if (bfd_seek (abfd, command->offset + 8, SEEK_SET) != 0
2308 || bfd_bread ((void *) cmd->uuid, 16, abfd) != 16)
2309 return -1;
2310
2311 sname = bfd_alloc (abfd, strlen (prefix) + 1);
2312 if (sname == NULL)
2313 return -1;
2314 strcpy (sname, prefix);
2315
2316 bfdsec = bfd_make_section_anyway_with_flags (abfd, sname, SEC_HAS_CONTENTS);
2317 if (bfdsec == NULL)
2318 return -1;
2319
2320 bfdsec->vma = 0;
2321 bfdsec->lma = 0;
2322 bfdsec->size = command->len - 8;
2323 bfdsec->filepos = command->offset + 8;
2324 bfdsec->alignment_power = 0;
2325
2326 cmd->section = bfdsec;
2327
2328 return 0;
2329 }
2330
2331 static int
2332 bfd_mach_o_read_linkedit (bfd *abfd, bfd_mach_o_load_command *command)
2333 {
2334 bfd_mach_o_linkedit_command *cmd = &command->command.linkedit;
2335 char buf[8];
2336
2337 if (bfd_seek (abfd, command->offset + 8, SEEK_SET) != 0
2338 || bfd_bread ((void *) buf, 8, abfd) != 8)
2339 return -1;
2340
2341 cmd->dataoff = bfd_get_32 (abfd, buf + 0);
2342 cmd->datasize = bfd_get_32 (abfd, buf + 4);
2343 return 0;
2344 }
2345
2346 static int
2347 bfd_mach_o_read_str (bfd *abfd, bfd_mach_o_load_command *command)
2348 {
2349 bfd_mach_o_str_command *cmd = &command->command.str;
2350 char buf[4];
2351 unsigned long off;
2352
2353 if (bfd_seek (abfd, command->offset + 8, SEEK_SET) != 0
2354 || bfd_bread ((void *) buf, 4, abfd) != 4)
2355 return -1;
2356
2357 off = bfd_get_32 (abfd, buf + 0);
2358 cmd->stroff = command->offset + off;
2359 cmd->str_len = command->len - off;
2360 cmd->str = bfd_alloc (abfd, cmd->str_len);
2361 if (cmd->str == NULL)
2362 return -1;
2363 if (bfd_seek (abfd, cmd->stroff, SEEK_SET) != 0
2364 || bfd_bread ((void *) cmd->str, cmd->str_len, abfd) != cmd->str_len)
2365 return -1;
2366 return 0;
2367 }
2368
2369 static int
2370 bfd_mach_o_read_dyld_info (bfd *abfd, bfd_mach_o_load_command *command)
2371 {
2372 bfd_mach_o_dyld_info_command *cmd = &command->command.dyld_info;
2373 char buf[40];
2374
2375 if (bfd_seek (abfd, command->offset + 8, SEEK_SET) != 0
2376 || bfd_bread ((void *) buf, sizeof (buf), abfd) != sizeof (buf))
2377 return -1;
2378
2379 cmd->rebase_off = bfd_get_32 (abfd, buf + 0);
2380 cmd->rebase_size = bfd_get_32 (abfd, buf + 4);
2381 cmd->bind_off = bfd_get_32 (abfd, buf + 8);
2382 cmd->bind_size = bfd_get_32 (abfd, buf + 12);
2383 cmd->weak_bind_off = bfd_get_32 (abfd, buf + 16);
2384 cmd->weak_bind_size = bfd_get_32 (abfd, buf + 20);
2385 cmd->lazy_bind_off = bfd_get_32 (abfd, buf + 24);
2386 cmd->lazy_bind_size = bfd_get_32 (abfd, buf + 28);
2387 cmd->export_off = bfd_get_32 (abfd, buf + 32);
2388 cmd->export_size = bfd_get_32 (abfd, buf + 36);
2389 return 0;
2390 }
2391
2392 static int
2393 bfd_mach_o_read_segment (bfd *abfd,
2394 bfd_mach_o_load_command *command,
2395 unsigned int wide)
2396 {
2397 unsigned char buf[64];
2398 bfd_mach_o_segment_command *seg = &command->command.segment;
2399 unsigned long i;
2400
2401 if (wide)
2402 {
2403 BFD_ASSERT (command->type == BFD_MACH_O_LC_SEGMENT_64);
2404
2405 if (bfd_seek (abfd, command->offset + 8, SEEK_SET) != 0
2406 || bfd_bread ((void *) buf, 64, abfd) != 64)
2407 return -1;
2408
2409 memcpy (seg->segname, buf, 16);
2410 seg->segname[16] = '\0';
2411
2412 seg->vmaddr = bfd_h_get_64 (abfd, buf + 16);
2413 seg->vmsize = bfd_h_get_64 (abfd, buf + 24);
2414 seg->fileoff = bfd_h_get_64 (abfd, buf + 32);
2415 seg->filesize = bfd_h_get_64 (abfd, buf + 40);
2416 seg->maxprot = bfd_h_get_32 (abfd, buf + 48);
2417 seg->initprot = bfd_h_get_32 (abfd, buf + 52);
2418 seg->nsects = bfd_h_get_32 (abfd, buf + 56);
2419 seg->flags = bfd_h_get_32 (abfd, buf + 60);
2420 }
2421 else
2422 {
2423 BFD_ASSERT (command->type == BFD_MACH_O_LC_SEGMENT);
2424
2425 if (bfd_seek (abfd, command->offset + 8, SEEK_SET) != 0
2426 || bfd_bread ((void *) buf, 48, abfd) != 48)
2427 return -1;
2428
2429 memcpy (seg->segname, buf, 16);
2430 seg->segname[16] = '\0';
2431
2432 seg->vmaddr = bfd_h_get_32 (abfd, buf + 16);
2433 seg->vmsize = bfd_h_get_32 (abfd, buf + 20);
2434 seg->fileoff = bfd_h_get_32 (abfd, buf + 24);
2435 seg->filesize = bfd_h_get_32 (abfd, buf + 28);
2436 seg->maxprot = bfd_h_get_32 (abfd, buf + 32);
2437 seg->initprot = bfd_h_get_32 (abfd, buf + 36);
2438 seg->nsects = bfd_h_get_32 (abfd, buf + 40);
2439 seg->flags = bfd_h_get_32 (abfd, buf + 44);
2440 }
2441
2442 if (seg->nsects != 0)
2443 {
2444 seg->sections = bfd_alloc (abfd, seg->nsects
2445 * sizeof (bfd_mach_o_section));
2446 if (seg->sections == NULL)
2447 return -1;
2448
2449 for (i = 0; i < seg->nsects; i++)
2450 {
2451 bfd_vma segoff;
2452 if (wide)
2453 segoff = command->offset + BFD_MACH_O_LC_SEGMENT_64_SIZE
2454 + (i * BFD_MACH_O_SECTION_64_SIZE);
2455 else
2456 segoff = command->offset + BFD_MACH_O_LC_SEGMENT_SIZE
2457 + (i * BFD_MACH_O_SECTION_SIZE);
2458
2459 if (bfd_mach_o_read_section
2460 (abfd, &seg->sections[i], segoff, seg->initprot, wide) != 0)
2461 return -1;
2462 }
2463 }
2464
2465 return 0;
2466 }
2467
2468 static int
2469 bfd_mach_o_read_segment_32 (bfd *abfd, bfd_mach_o_load_command *command)
2470 {
2471 return bfd_mach_o_read_segment (abfd, command, 0);
2472 }
2473
2474 static int
2475 bfd_mach_o_read_segment_64 (bfd *abfd, bfd_mach_o_load_command *command)
2476 {
2477 return bfd_mach_o_read_segment (abfd, command, 1);
2478 }
2479
2480 static int
2481 bfd_mach_o_read_command (bfd *abfd, bfd_mach_o_load_command *command)
2482 {
2483 unsigned char buf[8];
2484
2485 /* Read command type and length. */
2486 if (bfd_seek (abfd, command->offset, SEEK_SET) != 0
2487 || bfd_bread ((void *) buf, 8, abfd) != 8)
2488 return -1;
2489
2490 command->type = bfd_h_get_32 (abfd, buf) & ~BFD_MACH_O_LC_REQ_DYLD;
2491 command->type_required = (bfd_h_get_32 (abfd, buf) & BFD_MACH_O_LC_REQ_DYLD
2492 ? TRUE : FALSE);
2493 command->len = bfd_h_get_32 (abfd, buf + 4);
2494
2495 switch (command->type)
2496 {
2497 case BFD_MACH_O_LC_SEGMENT:
2498 if (bfd_mach_o_read_segment_32 (abfd, command) != 0)
2499 return -1;
2500 break;
2501 case BFD_MACH_O_LC_SEGMENT_64:
2502 if (bfd_mach_o_read_segment_64 (abfd, command) != 0)
2503 return -1;
2504 break;
2505 case BFD_MACH_O_LC_SYMTAB:
2506 if (bfd_mach_o_read_symtab (abfd, command) != 0)
2507 return -1;
2508 break;
2509 case BFD_MACH_O_LC_SYMSEG:
2510 break;
2511 case BFD_MACH_O_LC_THREAD:
2512 case BFD_MACH_O_LC_UNIXTHREAD:
2513 if (bfd_mach_o_read_thread (abfd, command) != 0)
2514 return -1;
2515 break;
2516 case BFD_MACH_O_LC_LOAD_DYLINKER:
2517 case BFD_MACH_O_LC_ID_DYLINKER:
2518 if (bfd_mach_o_read_dylinker (abfd, command) != 0)
2519 return -1;
2520 break;
2521 case BFD_MACH_O_LC_LOAD_DYLIB:
2522 case BFD_MACH_O_LC_ID_DYLIB:
2523 case BFD_MACH_O_LC_LOAD_WEAK_DYLIB:
2524 case BFD_MACH_O_LC_REEXPORT_DYLIB:
2525 if (bfd_mach_o_read_dylib (abfd, command) != 0)
2526 return -1;
2527 break;
2528 case BFD_MACH_O_LC_PREBOUND_DYLIB:
2529 if (bfd_mach_o_read_prebound_dylib (abfd, command) != 0)
2530 return -1;
2531 break;
2532 case BFD_MACH_O_LC_LOADFVMLIB:
2533 case BFD_MACH_O_LC_IDFVMLIB:
2534 case BFD_MACH_O_LC_IDENT:
2535 case BFD_MACH_O_LC_FVMFILE:
2536 case BFD_MACH_O_LC_PREPAGE:
2537 case BFD_MACH_O_LC_ROUTINES:
2538 break;
2539 case BFD_MACH_O_LC_SUB_FRAMEWORK:
2540 case BFD_MACH_O_LC_SUB_UMBRELLA:
2541 case BFD_MACH_O_LC_SUB_LIBRARY:
2542 case BFD_MACH_O_LC_SUB_CLIENT:
2543 case BFD_MACH_O_LC_RPATH:
2544 if (bfd_mach_o_read_str (abfd, command) != 0)
2545 return -1;
2546 break;
2547 case BFD_MACH_O_LC_DYSYMTAB:
2548 if (bfd_mach_o_read_dysymtab (abfd, command) != 0)
2549 return -1;
2550 break;
2551 case BFD_MACH_O_LC_TWOLEVEL_HINTS:
2552 case BFD_MACH_O_LC_PREBIND_CKSUM:
2553 break;
2554 case BFD_MACH_O_LC_UUID:
2555 if (bfd_mach_o_read_uuid (abfd, command) != 0)
2556 return -1;
2557 break;
2558 case BFD_MACH_O_LC_CODE_SIGNATURE:
2559 case BFD_MACH_O_LC_SEGMENT_SPLIT_INFO:
2560 if (bfd_mach_o_read_linkedit (abfd, command) != 0)
2561 return -1;
2562 break;
2563 case BFD_MACH_O_LC_DYLD_INFO:
2564 if (bfd_mach_o_read_dyld_info (abfd, command) != 0)
2565 return -1;
2566 break;
2567 default:
2568 fprintf (stderr, "unable to read unknown load command 0x%lx\n",
2569 (unsigned long) command->type);
2570 break;
2571 }
2572
2573 return 0;
2574 }
2575
2576 static void
2577 bfd_mach_o_flatten_sections (bfd *abfd)
2578 {
2579 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
2580 long csect = 0;
2581 unsigned long i, j;
2582
2583 /* Count total number of sections. */
2584 mdata->nsects = 0;
2585
2586 for (i = 0; i < mdata->header.ncmds; i++)
2587 {
2588 if (mdata->commands[i].type == BFD_MACH_O_LC_SEGMENT
2589 || mdata->commands[i].type == BFD_MACH_O_LC_SEGMENT_64)
2590 {
2591 bfd_mach_o_segment_command *seg;
2592
2593 seg = &mdata->commands[i].command.segment;
2594 mdata->nsects += seg->nsects;
2595 }
2596 }
2597
2598 /* Allocate sections array. */
2599 mdata->sections = bfd_alloc (abfd,
2600 mdata->nsects * sizeof (bfd_mach_o_section *));
2601
2602 /* Fill the array. */
2603 csect = 0;
2604
2605 for (i = 0; i < mdata->header.ncmds; i++)
2606 {
2607 if (mdata->commands[i].type == BFD_MACH_O_LC_SEGMENT
2608 || mdata->commands[i].type == BFD_MACH_O_LC_SEGMENT_64)
2609 {
2610 bfd_mach_o_segment_command *seg;
2611
2612 seg = &mdata->commands[i].command.segment;
2613 BFD_ASSERT (csect + seg->nsects <= mdata->nsects);
2614
2615 for (j = 0; j < seg->nsects; j++)
2616 mdata->sections[csect++] = &seg->sections[j];
2617 }
2618 }
2619 }
2620
2621 int
2622 bfd_mach_o_scan_start_address (bfd *abfd)
2623 {
2624 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
2625 bfd_mach_o_thread_command *cmd = NULL;
2626 unsigned long i;
2627
2628 for (i = 0; i < mdata->header.ncmds; i++)
2629 {
2630 if ((mdata->commands[i].type == BFD_MACH_O_LC_THREAD) ||
2631 (mdata->commands[i].type == BFD_MACH_O_LC_UNIXTHREAD))
2632 {
2633 if (cmd == NULL)
2634 cmd = &mdata->commands[i].command.thread;
2635 else
2636 return 0;
2637 }
2638 }
2639
2640 if (cmd == NULL)
2641 return 0;
2642
2643 for (i = 0; i < cmd->nflavours; i++)
2644 {
2645 if ((mdata->header.cputype == BFD_MACH_O_CPU_TYPE_I386)
2646 && (cmd->flavours[i].flavour
2647 == (unsigned long) BFD_MACH_O_x86_THREAD_STATE32))
2648 {
2649 unsigned char buf[4];
2650
2651 if (bfd_seek (abfd, cmd->flavours[i].offset + 40, SEEK_SET) != 0
2652 || bfd_bread (buf, 4, abfd) != 4)
2653 return -1;
2654
2655 abfd->start_address = bfd_h_get_32 (abfd, buf);
2656 }
2657 else if ((mdata->header.cputype == BFD_MACH_O_CPU_TYPE_POWERPC)
2658 && (cmd->flavours[i].flavour == BFD_MACH_O_PPC_THREAD_STATE))
2659 {
2660 unsigned char buf[4];
2661
2662 if (bfd_seek (abfd, cmd->flavours[i].offset + 0, SEEK_SET) != 0
2663 || bfd_bread (buf, 4, abfd) != 4)
2664 return -1;
2665
2666 abfd->start_address = bfd_h_get_32 (abfd, buf);
2667 }
2668 else if ((mdata->header.cputype == BFD_MACH_O_CPU_TYPE_POWERPC_64)
2669 && (cmd->flavours[i].flavour == BFD_MACH_O_PPC_THREAD_STATE64))
2670 {
2671 unsigned char buf[8];
2672
2673 if (bfd_seek (abfd, cmd->flavours[i].offset + 0, SEEK_SET) != 0
2674 || bfd_bread (buf, 8, abfd) != 8)
2675 return -1;
2676
2677 abfd->start_address = bfd_h_get_64 (abfd, buf);
2678 }
2679 else if ((mdata->header.cputype == BFD_MACH_O_CPU_TYPE_X86_64)
2680 && (cmd->flavours[i].flavour == BFD_MACH_O_x86_THREAD_STATE64))
2681 {
2682 unsigned char buf[8];
2683
2684 if (bfd_seek (abfd, cmd->flavours[i].offset + (16 * 8), SEEK_SET) != 0
2685 || bfd_bread (buf, 8, abfd) != 8)
2686 return -1;
2687
2688 abfd->start_address = bfd_h_get_64 (abfd, buf);
2689 }
2690 }
2691
2692 return 0;
2693 }
2694
2695 int
2696 bfd_mach_o_scan (bfd *abfd,
2697 bfd_mach_o_header *header,
2698 bfd_mach_o_data_struct *mdata)
2699 {
2700 unsigned int i;
2701 enum bfd_architecture cputype;
2702 unsigned long cpusubtype;
2703 unsigned int hdrsize;
2704
2705 hdrsize = mach_o_wide_p (header) ?
2706 BFD_MACH_O_HEADER_64_SIZE : BFD_MACH_O_HEADER_SIZE;
2707
2708 mdata->header = *header;
2709
2710 abfd->flags = abfd->flags & BFD_IN_MEMORY;
2711 switch (header->filetype)
2712 {
2713 case BFD_MACH_O_MH_OBJECT:
2714 abfd->flags |= HAS_RELOC;
2715 break;
2716 case BFD_MACH_O_MH_EXECUTE:
2717 abfd->flags |= EXEC_P;
2718 break;
2719 case BFD_MACH_O_MH_DYLIB:
2720 case BFD_MACH_O_MH_BUNDLE:
2721 abfd->flags |= DYNAMIC;
2722 break;
2723 }
2724
2725 abfd->tdata.mach_o_data = mdata;
2726
2727 bfd_mach_o_convert_architecture (header->cputype, header->cpusubtype,
2728 &cputype, &cpusubtype);
2729 if (cputype == bfd_arch_unknown)
2730 {
2731 fprintf (stderr, "bfd_mach_o_scan: unknown architecture 0x%lx/0x%lx\n",
2732 header->cputype, header->cpusubtype);
2733 return -1;
2734 }
2735
2736 bfd_set_arch_mach (abfd, cputype, cpusubtype);
2737
2738 if (header->ncmds != 0)
2739 {
2740 mdata->commands = bfd_alloc
2741 (abfd, header->ncmds * sizeof (bfd_mach_o_load_command));
2742 if (mdata->commands == NULL)
2743 return -1;
2744
2745 for (i = 0; i < header->ncmds; i++)
2746 {
2747 bfd_mach_o_load_command *cur = &mdata->commands[i];
2748
2749 if (i == 0)
2750 cur->offset = hdrsize;
2751 else
2752 {
2753 bfd_mach_o_load_command *prev = &mdata->commands[i - 1];
2754 cur->offset = prev->offset + prev->len;
2755 }
2756
2757 if (bfd_mach_o_read_command (abfd, cur) < 0)
2758 return -1;
2759 }
2760 }
2761
2762 if (bfd_mach_o_scan_start_address (abfd) < 0)
2763 return -1;
2764
2765 bfd_mach_o_flatten_sections (abfd);
2766 return 0;
2767 }
2768
2769 bfd_boolean
2770 bfd_mach_o_mkobject_init (bfd *abfd)
2771 {
2772 bfd_mach_o_data_struct *mdata = NULL;
2773
2774 mdata = bfd_alloc (abfd, sizeof (bfd_mach_o_data_struct));
2775 if (mdata == NULL)
2776 return FALSE;
2777 abfd->tdata.mach_o_data = mdata;
2778
2779 mdata->header.magic = 0;
2780 mdata->header.cputype = 0;
2781 mdata->header.cpusubtype = 0;
2782 mdata->header.filetype = 0;
2783 mdata->header.ncmds = 0;
2784 mdata->header.sizeofcmds = 0;
2785 mdata->header.flags = 0;
2786 mdata->header.byteorder = BFD_ENDIAN_UNKNOWN;
2787 mdata->commands = NULL;
2788 mdata->nsects = 0;
2789 mdata->sections = NULL;
2790
2791 return TRUE;
2792 }
2793
2794 const bfd_target *
2795 bfd_mach_o_header_p (bfd *abfd,
2796 bfd_mach_o_filetype filetype,
2797 bfd_mach_o_cpu_type cputype)
2798 {
2799 struct bfd_preserve preserve;
2800 bfd_mach_o_header header;
2801
2802 preserve.marker = NULL;
2803 if (!bfd_mach_o_read_header (abfd, &header))
2804 goto wrong;
2805
2806 if (! (header.byteorder == BFD_ENDIAN_BIG
2807 || header.byteorder == BFD_ENDIAN_LITTLE))
2808 {
2809 fprintf (stderr, "unknown header byte-order value 0x%lx\n",
2810 (unsigned long) header.byteorder);
2811 goto wrong;
2812 }
2813
2814 if (! ((header.byteorder == BFD_ENDIAN_BIG
2815 && abfd->xvec->byteorder == BFD_ENDIAN_BIG
2816 && abfd->xvec->header_byteorder == BFD_ENDIAN_BIG)
2817 || (header.byteorder == BFD_ENDIAN_LITTLE
2818 && abfd->xvec->byteorder == BFD_ENDIAN_LITTLE
2819 && abfd->xvec->header_byteorder == BFD_ENDIAN_LITTLE)))
2820 goto wrong;
2821
2822 /* Check cputype and filetype.
2823 In case of wildcard, do not accept magics that are handled by existing
2824 targets. */
2825 if (cputype)
2826 {
2827 if (header.cputype != cputype)
2828 goto wrong;
2829 }
2830 else
2831 {
2832 switch (header.cputype)
2833 {
2834 case BFD_MACH_O_CPU_TYPE_I386:
2835 /* Handled by mach-o-i386 */
2836 goto wrong;
2837 default:
2838 break;
2839 }
2840 }
2841 if (filetype)
2842 {
2843 if (header.filetype != filetype)
2844 goto wrong;
2845 }
2846 else
2847 {
2848 switch (header.filetype)
2849 {
2850 case BFD_MACH_O_MH_CORE:
2851 /* Handled by core_p */
2852 goto wrong;
2853 default:
2854 break;
2855 }
2856 }
2857
2858 preserve.marker = bfd_zalloc (abfd, sizeof (bfd_mach_o_data_struct));
2859 if (preserve.marker == NULL
2860 || !bfd_preserve_save (abfd, &preserve))
2861 goto fail;
2862
2863 if (bfd_mach_o_scan (abfd, &header,
2864 (bfd_mach_o_data_struct *) preserve.marker) != 0)
2865 goto wrong;
2866
2867 bfd_preserve_finish (abfd, &preserve);
2868 return abfd->xvec;
2869
2870 wrong:
2871 bfd_set_error (bfd_error_wrong_format);
2872
2873 fail:
2874 if (preserve.marker != NULL)
2875 bfd_preserve_restore (abfd, &preserve);
2876 return NULL;
2877 }
2878
2879 static const bfd_target *
2880 bfd_mach_o_gen_object_p (bfd *abfd)
2881 {
2882 return bfd_mach_o_header_p (abfd, 0, 0);
2883 }
2884
2885 static const bfd_target *
2886 bfd_mach_o_gen_core_p (bfd *abfd)
2887 {
2888 return bfd_mach_o_header_p (abfd, BFD_MACH_O_MH_CORE, 0);
2889 }
2890
2891 typedef struct mach_o_fat_archentry
2892 {
2893 unsigned long cputype;
2894 unsigned long cpusubtype;
2895 unsigned long offset;
2896 unsigned long size;
2897 unsigned long align;
2898 } mach_o_fat_archentry;
2899
2900 typedef struct mach_o_fat_data_struct
2901 {
2902 unsigned long magic;
2903 unsigned long nfat_arch;
2904 mach_o_fat_archentry *archentries;
2905 } mach_o_fat_data_struct;
2906
2907 const bfd_target *
2908 bfd_mach_o_archive_p (bfd *abfd)
2909 {
2910 mach_o_fat_data_struct *adata = NULL;
2911 unsigned char buf[20];
2912 unsigned long i;
2913
2914 if (bfd_seek (abfd, 0, SEEK_SET) != 0
2915 || bfd_bread ((void *) buf, 8, abfd) != 8)
2916 goto error;
2917
2918 adata = bfd_alloc (abfd, sizeof (mach_o_fat_data_struct));
2919 if (adata == NULL)
2920 goto error;
2921
2922 adata->magic = bfd_getb32 (buf);
2923 adata->nfat_arch = bfd_getb32 (buf + 4);
2924 if (adata->magic != 0xcafebabe)
2925 goto error;
2926 /* Avoid matching Java bytecode files, which have the same magic number.
2927 In the Java bytecode file format this field contains the JVM version,
2928 which starts at 43.0. */
2929 if (adata->nfat_arch > 30)
2930 goto error;
2931
2932 adata->archentries =
2933 bfd_alloc (abfd, adata->nfat_arch * sizeof (mach_o_fat_archentry));
2934 if (adata->archentries == NULL)
2935 goto error;
2936
2937 for (i = 0; i < adata->nfat_arch; i++)
2938 {
2939 if (bfd_seek (abfd, 8 + 20 * i, SEEK_SET) != 0
2940 || bfd_bread ((void *) buf, 20, abfd) != 20)
2941 goto error;
2942 adata->archentries[i].cputype = bfd_getb32 (buf);
2943 adata->archentries[i].cpusubtype = bfd_getb32 (buf + 4);
2944 adata->archentries[i].offset = bfd_getb32 (buf + 8);
2945 adata->archentries[i].size = bfd_getb32 (buf + 12);
2946 adata->archentries[i].align = bfd_getb32 (buf + 16);
2947 }
2948
2949 abfd->tdata.mach_o_fat_data = adata;
2950 return abfd->xvec;
2951
2952 error:
2953 if (adata != NULL)
2954 bfd_release (abfd, adata);
2955 bfd_set_error (bfd_error_wrong_format);
2956 return NULL;
2957 }
2958
2959 bfd *
2960 bfd_mach_o_openr_next_archived_file (bfd *archive, bfd *prev)
2961 {
2962 mach_o_fat_data_struct *adata;
2963 mach_o_fat_archentry *entry = NULL;
2964 unsigned long i;
2965 bfd *nbfd;
2966 enum bfd_architecture arch_type;
2967 unsigned long arch_subtype;
2968
2969 adata = (mach_o_fat_data_struct *) archive->tdata.mach_o_fat_data;
2970 BFD_ASSERT (adata != NULL);
2971
2972 /* Find index of previous entry. */
2973 if (prev == NULL)
2974 i = 0; /* Start at first one. */
2975 else
2976 {
2977 for (i = 0; i < adata->nfat_arch; i++)
2978 {
2979 if (adata->archentries[i].offset == prev->origin)
2980 break;
2981 }
2982
2983 if (i == adata->nfat_arch)
2984 {
2985 /* Not found. */
2986 bfd_set_error (bfd_error_bad_value);
2987 return NULL;
2988 }
2989 i++; /* Get next entry. */
2990 }
2991
2992 if (i >= adata->nfat_arch)
2993 {
2994 bfd_set_error (bfd_error_no_more_archived_files);
2995 return NULL;
2996 }
2997
2998 entry = &adata->archentries[i];
2999 nbfd = _bfd_new_bfd_contained_in (archive);
3000 if (nbfd == NULL)
3001 return NULL;
3002
3003 nbfd->origin = entry->offset;
3004
3005 bfd_mach_o_convert_architecture (entry->cputype, entry->cpusubtype,
3006 &arch_type, &arch_subtype);
3007 /* Create the member filename.
3008 Use FILENAME:ARCH_NAME. */
3009 {
3010 char *s = NULL;
3011 const char *arch_name;
3012 size_t arch_file_len = strlen (bfd_get_filename (archive));
3013
3014 arch_name = bfd_printable_arch_mach (arch_type, arch_subtype);
3015 s = bfd_malloc (arch_file_len + 1 + strlen (arch_name) + 1);
3016 if (s == NULL)
3017 return NULL;
3018 memcpy (s, bfd_get_filename (archive), arch_file_len);
3019 s[arch_file_len] = ':';
3020 strcpy (s + arch_file_len + 1, arch_name);
3021 nbfd->filename = s;
3022 }
3023 nbfd->iostream = NULL;
3024 bfd_set_arch_mach (nbfd, arch_type, arch_subtype);
3025
3026 return nbfd;
3027 }
3028
3029 /* If ABFD format is FORMAT and architecture is ARCH, return it.
3030 If ABFD is a fat image containing a member that corresponds to FORMAT
3031 and ARCH, returns it.
3032 In other case, returns NULL.
3033 This function allows transparent uses of fat images. */
3034 bfd *
3035 bfd_mach_o_fat_extract (bfd *abfd,
3036 bfd_format format,
3037 const bfd_arch_info_type *arch)
3038 {
3039 bfd *res;
3040 mach_o_fat_data_struct *adata;
3041 unsigned int i;
3042
3043 if (bfd_check_format (abfd, format))
3044 {
3045 if (bfd_get_arch_info (abfd) == arch)
3046 return abfd;
3047 return NULL;
3048 }
3049 if (!bfd_check_format (abfd, bfd_archive)
3050 || abfd->xvec != &mach_o_fat_vec)
3051 return NULL;
3052
3053 /* This is a Mach-O fat image. */
3054 adata = (mach_o_fat_data_struct *) abfd->tdata.mach_o_fat_data;
3055 BFD_ASSERT (adata != NULL);
3056
3057 for (i = 0; i < adata->nfat_arch; i++)
3058 {
3059 struct mach_o_fat_archentry *e = &adata->archentries[i];
3060 enum bfd_architecture cpu_type;
3061 unsigned long cpu_subtype;
3062
3063 bfd_mach_o_convert_architecture (e->cputype, e->cpusubtype,
3064 &cpu_type, &cpu_subtype);
3065 if (cpu_type != arch->arch || cpu_subtype != arch->mach)
3066 continue;
3067
3068 /* The architecture is found. */
3069 res = _bfd_new_bfd_contained_in (abfd);
3070 if (res == NULL)
3071 return NULL;
3072
3073 res->origin = e->offset;
3074
3075 res->filename = strdup (abfd->filename);
3076 res->iostream = NULL;
3077
3078 if (bfd_check_format (res, format))
3079 {
3080 BFD_ASSERT (bfd_get_arch_info (res) == arch);
3081 return res;
3082 }
3083 bfd_close (res);
3084 return NULL;
3085 }
3086
3087 return NULL;
3088 }
3089
3090 int
3091 bfd_mach_o_lookup_section (bfd *abfd,
3092 asection *section,
3093 bfd_mach_o_load_command **mcommand,
3094 bfd_mach_o_section **msection)
3095 {
3096 struct mach_o_data_struct *md = bfd_mach_o_get_data (abfd);
3097 unsigned int i, j, num;
3098
3099 bfd_mach_o_load_command *ncmd = NULL;
3100 bfd_mach_o_section *nsect = NULL;
3101
3102 BFD_ASSERT (mcommand != NULL);
3103 BFD_ASSERT (msection != NULL);
3104
3105 num = 0;
3106 for (i = 0; i < md->header.ncmds; i++)
3107 {
3108 struct bfd_mach_o_load_command *cmd = &md->commands[i];
3109 struct bfd_mach_o_segment_command *seg = NULL;
3110
3111 if (cmd->type != BFD_MACH_O_LC_SEGMENT
3112 || cmd->type != BFD_MACH_O_LC_SEGMENT_64)
3113 continue;
3114 seg = &cmd->command.segment;
3115
3116 for (j = 0; j < seg->nsects; j++)
3117 {
3118 struct bfd_mach_o_section *sect = &seg->sections[j];
3119
3120 if (sect->bfdsection == section)
3121 {
3122 if (num == 0)
3123 {
3124 nsect = sect;
3125 ncmd = cmd;
3126 }
3127 num++;
3128 }
3129 }
3130 }
3131
3132 *mcommand = ncmd;
3133 *msection = nsect;
3134 return num;
3135 }
3136
3137 int
3138 bfd_mach_o_lookup_command (bfd *abfd,
3139 bfd_mach_o_load_command_type type,
3140 bfd_mach_o_load_command **mcommand)
3141 {
3142 struct mach_o_data_struct *md = bfd_mach_o_get_data (abfd);
3143 bfd_mach_o_load_command *ncmd = NULL;
3144 unsigned int i, num;
3145
3146 BFD_ASSERT (md != NULL);
3147 BFD_ASSERT (mcommand != NULL);
3148
3149 num = 0;
3150 for (i = 0; i < md->header.ncmds; i++)
3151 {
3152 struct bfd_mach_o_load_command *cmd = &md->commands[i];
3153
3154 if (cmd->type != type)
3155 continue;
3156
3157 if (num == 0)
3158 ncmd = cmd;
3159 num++;
3160 }
3161
3162 *mcommand = ncmd;
3163 return num;
3164 }
3165
3166 unsigned long
3167 bfd_mach_o_stack_addr (enum bfd_mach_o_cpu_type type)
3168 {
3169 switch (type)
3170 {
3171 case BFD_MACH_O_CPU_TYPE_MC680x0:
3172 return 0x04000000;
3173 case BFD_MACH_O_CPU_TYPE_MC88000:
3174 return 0xffffe000;
3175 case BFD_MACH_O_CPU_TYPE_POWERPC:
3176 return 0xc0000000;
3177 case BFD_MACH_O_CPU_TYPE_I386:
3178 return 0xc0000000;
3179 case BFD_MACH_O_CPU_TYPE_SPARC:
3180 return 0xf0000000;
3181 case BFD_MACH_O_CPU_TYPE_I860:
3182 return 0;
3183 case BFD_MACH_O_CPU_TYPE_HPPA:
3184 return 0xc0000000 - 0x04000000;
3185 default:
3186 return 0;
3187 }
3188 }
3189
3190 typedef struct bfd_mach_o_xlat_name
3191 {
3192 const char *name;
3193 unsigned long val;
3194 }
3195 bfd_mach_o_xlat_name;
3196
3197 static void
3198 bfd_mach_o_print_flags (const bfd_mach_o_xlat_name *table,
3199 unsigned long val,
3200 FILE *file)
3201 {
3202 int first = 1;
3203
3204 for (; table->name; table++)
3205 {
3206 if (table->val & val)
3207 {
3208 if (!first)
3209 fprintf (file, "+");
3210 fprintf (file, "%s", table->name);
3211 val &= ~table->val;
3212 first = 0;
3213 }
3214 }
3215 if (val)
3216 {
3217 if (!first)
3218 fprintf (file, "+");
3219 fprintf (file, "0x%lx", val);
3220 return;
3221 }
3222 if (first)
3223 fprintf (file, "-");
3224 }
3225
3226 static const char *
3227 bfd_mach_o_get_name (const bfd_mach_o_xlat_name *table, unsigned long val)
3228 {
3229 for (; table->name; table++)
3230 if (table->val == val)
3231 return table->name;
3232 return "*UNKNOWN*";
3233 }
3234
3235 static bfd_mach_o_xlat_name bfd_mach_o_cpu_name[] =
3236 {
3237 { "vax", BFD_MACH_O_CPU_TYPE_VAX },
3238 { "mc680x0", BFD_MACH_O_CPU_TYPE_MC680x0 },
3239 { "i386", BFD_MACH_O_CPU_TYPE_I386 },
3240 { "mips", BFD_MACH_O_CPU_TYPE_MIPS },
3241 { "mc98000", BFD_MACH_O_CPU_TYPE_MC98000 },
3242 { "hppa", BFD_MACH_O_CPU_TYPE_HPPA },
3243 { "arm", BFD_MACH_O_CPU_TYPE_ARM },
3244 { "mc88000", BFD_MACH_O_CPU_TYPE_MC88000 },
3245 { "sparc", BFD_MACH_O_CPU_TYPE_SPARC },
3246 { "i860", BFD_MACH_O_CPU_TYPE_I860 },
3247 { "alpha", BFD_MACH_O_CPU_TYPE_ALPHA },
3248 { "powerpc", BFD_MACH_O_CPU_TYPE_POWERPC },
3249 { "powerpc_64", BFD_MACH_O_CPU_TYPE_POWERPC_64 },
3250 { "x86_64", BFD_MACH_O_CPU_TYPE_X86_64 },
3251 { NULL, 0}
3252 };
3253
3254 static bfd_mach_o_xlat_name bfd_mach_o_filetype_name[] =
3255 {
3256 { "object", BFD_MACH_O_MH_OBJECT },
3257 { "execute", BFD_MACH_O_MH_EXECUTE },
3258 { "fvmlib", BFD_MACH_O_MH_FVMLIB },
3259 { "core", BFD_MACH_O_MH_CORE },
3260 { "preload", BFD_MACH_O_MH_PRELOAD },
3261 { "dylib", BFD_MACH_O_MH_DYLIB },
3262 { "dylinker", BFD_MACH_O_MH_DYLINKER },
3263 { "bundle", BFD_MACH_O_MH_BUNDLE },
3264 { "dylib_stub", BFD_MACH_O_MH_DYLIB_STUB },
3265 { "dym", BFD_MACH_O_MH_DSYM },
3266 { "kext_bundle", BFD_MACH_O_MH_KEXT_BUNDLE },
3267 { NULL, 0}
3268 };
3269
3270 static bfd_mach_o_xlat_name bfd_mach_o_header_flags_name[] =
3271 {
3272 { "noundefs", BFD_MACH_O_MH_NOUNDEFS },
3273 { "incrlink", BFD_MACH_O_MH_INCRLINK },
3274 { "dyldlink", BFD_MACH_O_MH_DYLDLINK },
3275 { "bindatload", BFD_MACH_O_MH_BINDATLOAD },
3276 { "prebound", BFD_MACH_O_MH_PREBOUND },
3277 { "split_segs", BFD_MACH_O_MH_SPLIT_SEGS },
3278 { "lazy_init", BFD_MACH_O_MH_LAZY_INIT },
3279 { "twolevel", BFD_MACH_O_MH_TWOLEVEL },
3280 { "force_flat", BFD_MACH_O_MH_FORCE_FLAT },
3281 { "nomultidefs", BFD_MACH_O_MH_NOMULTIDEFS },
3282 { "nofixprebinding", BFD_MACH_O_MH_NOFIXPREBINDING },
3283 { "prebindable", BFD_MACH_O_MH_PREBINDABLE },
3284 { "allmodsbound", BFD_MACH_O_MH_ALLMODSBOUND },
3285 { "subsections_via_symbols", BFD_MACH_O_MH_SUBSECTIONS_VIA_SYMBOLS },
3286 { "canonical", BFD_MACH_O_MH_CANONICAL },
3287 { "weak_defines", BFD_MACH_O_MH_WEAK_DEFINES },
3288 { "binds_to_weak", BFD_MACH_O_MH_BINDS_TO_WEAK },
3289 { "allow_stack_execution", BFD_MACH_O_MH_ALLOW_STACK_EXECUTION },
3290 { "root_safe", BFD_MACH_O_MH_ROOT_SAFE },
3291 { "setuid_safe", BFD_MACH_O_MH_SETUID_SAFE },
3292 { "no_reexported_dylibs", BFD_MACH_O_MH_NO_REEXPORTED_DYLIBS },
3293 { "pie", BFD_MACH_O_MH_PIE },
3294 { NULL, 0}
3295 };
3296
3297 static bfd_mach_o_xlat_name bfd_mach_o_section_type_name[] =
3298 {
3299 { "regular", BFD_MACH_O_S_REGULAR},
3300 { "zerofill", BFD_MACH_O_S_ZEROFILL},
3301 { "cstring_literals", BFD_MACH_O_S_CSTRING_LITERALS},
3302 { "4byte_literals", BFD_MACH_O_S_4BYTE_LITERALS},
3303 { "8byte_literals", BFD_MACH_O_S_8BYTE_LITERALS},
3304 { "literal_pointers", BFD_MACH_O_S_LITERAL_POINTERS},
3305 { "non_lazy_symbol_pointers", BFD_MACH_O_S_NON_LAZY_SYMBOL_POINTERS},
3306 { "lazy_symbol_pointers", BFD_MACH_O_S_LAZY_SYMBOL_POINTERS},
3307 { "symbol_stubs", BFD_MACH_O_S_SYMBOL_STUBS},
3308 { "mod_init_func_pointers", BFD_MACH_O_S_MOD_INIT_FUNC_POINTERS},
3309 { "mod_fini_func_pointers", BFD_MACH_O_S_MOD_FINI_FUNC_POINTERS},
3310 { "coalesced", BFD_MACH_O_S_COALESCED},
3311 { "gb_zerofill", BFD_MACH_O_S_GB_ZEROFILL},
3312 { "interposing", BFD_MACH_O_S_INTERPOSING},
3313 { "16byte_literals", BFD_MACH_O_S_16BYTE_LITERALS},
3314 { "dtrace_dof", BFD_MACH_O_S_DTRACE_DOF},
3315 { "lazy_dylib_symbol_pointers", BFD_MACH_O_S_LAZY_DYLIB_SYMBOL_POINTERS},
3316 { NULL, 0}
3317 };
3318
3319 static bfd_mach_o_xlat_name bfd_mach_o_section_attribute_name[] =
3320 {
3321 { "loc_reloc", BFD_MACH_O_S_ATTR_LOC_RELOC },
3322 { "ext_reloc", BFD_MACH_O_S_ATTR_EXT_RELOC },
3323 { "some_instructions", BFD_MACH_O_S_ATTR_SOME_INSTRUCTIONS },
3324 { "debug", BFD_MACH_O_S_ATTR_DEBUG },
3325 { "modifying_code", BFD_MACH_O_S_SELF_MODIFYING_CODE },
3326 { "live_support", BFD_MACH_O_S_ATTR_LIVE_SUPPORT },
3327 { "no_dead_strip", BFD_MACH_O_S_ATTR_NO_DEAD_STRIP },
3328 { "strip_static_syms", BFD_MACH_O_S_ATTR_STRIP_STATIC_SYMS },
3329 { "no_toc", BFD_MACH_O_S_ATTR_NO_TOC },
3330 { "pure_instructions", BFD_MACH_O_S_ATTR_PURE_INSTRUCTIONS },
3331 { NULL, 0}
3332 };
3333
3334 static bfd_mach_o_xlat_name bfd_mach_o_load_command_name[] =
3335 {
3336 { "segment", BFD_MACH_O_LC_SEGMENT},
3337 { "symtab", BFD_MACH_O_LC_SYMTAB},
3338 { "symseg", BFD_MACH_O_LC_SYMSEG},
3339 { "thread", BFD_MACH_O_LC_THREAD},
3340 { "unixthread", BFD_MACH_O_LC_UNIXTHREAD},
3341 { "loadfvmlib", BFD_MACH_O_LC_LOADFVMLIB},
3342 { "idfvmlib", BFD_MACH_O_LC_IDFVMLIB},
3343 { "ident", BFD_MACH_O_LC_IDENT},
3344 { "fvmfile", BFD_MACH_O_LC_FVMFILE},
3345 { "prepage", BFD_MACH_O_LC_PREPAGE},
3346 { "dysymtab", BFD_MACH_O_LC_DYSYMTAB},
3347 { "load_dylib", BFD_MACH_O_LC_LOAD_DYLIB},
3348 { "id_dylib", BFD_MACH_O_LC_ID_DYLIB},
3349 { "load_dylinker", BFD_MACH_O_LC_LOAD_DYLINKER},
3350 { "id_dylinker", BFD_MACH_O_LC_ID_DYLINKER},
3351 { "prebound_dylib", BFD_MACH_O_LC_PREBOUND_DYLIB},
3352 { "routines", BFD_MACH_O_LC_ROUTINES},
3353 { "sub_framework", BFD_MACH_O_LC_SUB_FRAMEWORK},
3354 { "sub_umbrella", BFD_MACH_O_LC_SUB_UMBRELLA},
3355 { "sub_client", BFD_MACH_O_LC_SUB_CLIENT},
3356 { "sub_library", BFD_MACH_O_LC_SUB_LIBRARY},
3357 { "twolevel_hints", BFD_MACH_O_LC_TWOLEVEL_HINTS},
3358 { "prebind_cksum", BFD_MACH_O_LC_PREBIND_CKSUM},
3359 { "load_weak_dylib", BFD_MACH_O_LC_LOAD_WEAK_DYLIB},
3360 { "segment_64", BFD_MACH_O_LC_SEGMENT_64},
3361 { "routines_64", BFD_MACH_O_LC_ROUTINES_64},
3362 { "uuid", BFD_MACH_O_LC_UUID},
3363 { "rpath", BFD_MACH_O_LC_RPATH},
3364 { "code_signature", BFD_MACH_O_LC_CODE_SIGNATURE},
3365 { "segment_split_info", BFD_MACH_O_LC_SEGMENT_SPLIT_INFO},
3366 { "reexport_dylib", BFD_MACH_O_LC_REEXPORT_DYLIB},
3367 { "lazy_load_dylib", BFD_MACH_O_LC_LAZY_LOAD_DYLIB},
3368 { "encryption_info", BFD_MACH_O_LC_ENCRYPTION_INFO},
3369 { "dyld_info", BFD_MACH_O_LC_DYLD_INFO},
3370 { NULL, 0}
3371 };
3372
3373 static void
3374 bfd_mach_o_print_private_header (bfd *abfd, FILE *file)
3375 {
3376 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
3377 bfd_mach_o_header *h = &mdata->header;
3378
3379 fputs (_("Mach-O header:\n"), file);
3380 fprintf (file, _(" magic : %08lx\n"), h->magic);
3381 fprintf (file, _(" cputype : %08lx (%s)\n"), h->cputype,
3382 bfd_mach_o_get_name (bfd_mach_o_cpu_name, h->cputype));
3383 fprintf (file, _(" cpusubtype: %08lx\n"), h->cpusubtype);
3384 fprintf (file, _(" filetype : %08lx (%s)\n"),
3385 h->filetype,
3386 bfd_mach_o_get_name (bfd_mach_o_filetype_name, h->filetype));
3387 fprintf (file, _(" ncmds : %08lx (%lu)\n"), h->ncmds, h->ncmds);
3388 fprintf (file, _(" sizeofcmds: %08lx\n"), h->sizeofcmds);
3389 fprintf (file, _(" flags : %08lx ("), h->flags);
3390 bfd_mach_o_print_flags (bfd_mach_o_header_flags_name, h->flags, file);
3391 fputs (_(")\n"), file);
3392 fprintf (file, _(" reserved : %08x\n"), h->reserved);
3393 }
3394
3395 static void
3396 bfd_mach_o_print_section_map (bfd *abfd, FILE *file)
3397 {
3398 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
3399 unsigned int i, j;
3400 unsigned int sec_nbr = 0;
3401
3402 fputs (_("Segments and Sections:\n"), file);
3403 fputs (_(" #: Segment name Section name Address\n"), file);
3404
3405 for (i = 0; i < mdata->header.ncmds; i++)
3406 {
3407 bfd_mach_o_segment_command *seg;
3408
3409 if (mdata->commands[i].type != BFD_MACH_O_LC_SEGMENT
3410 && mdata->commands[i].type != BFD_MACH_O_LC_SEGMENT_64)
3411 continue;
3412
3413 seg = &mdata->commands[i].command.segment;
3414
3415 fprintf (file, "[Segment %-16s ", seg->segname);
3416 fprintf_vma (file, seg->vmaddr);
3417 fprintf (file, "-");
3418 fprintf_vma (file, seg->vmaddr + seg->vmsize - 1);
3419 fputc (' ', file);
3420 fputc (seg->initprot & BFD_MACH_O_PROT_READ ? 'r' : '-', file);
3421 fputc (seg->initprot & BFD_MACH_O_PROT_WRITE ? 'w' : '-', file);
3422 fputc (seg->initprot & BFD_MACH_O_PROT_EXECUTE ? 'x' : '-', file);
3423 fprintf (file, "]\n");
3424 for (j = 0; j < seg->nsects; j++)
3425 {
3426 bfd_mach_o_section *sec = &seg->sections[j];
3427 fprintf (file, "%02u: %-16s %-16s ", ++sec_nbr,
3428 sec->segname, sec->sectname);
3429 fprintf_vma (file, sec->addr);
3430 fprintf (file, " ");
3431 fprintf_vma (file, sec->size);
3432 fprintf (file, " %08lx\n", sec->flags);
3433 }
3434 }
3435 }
3436
3437 static void
3438 bfd_mach_o_print_section (bfd *abfd ATTRIBUTE_UNUSED,
3439 bfd_mach_o_section *sec, FILE *file)
3440 {
3441 fprintf (file, " Section: %-16s %-16s (bfdname: %s)\n",
3442 sec->sectname, sec->segname, sec->bfdsection->name);
3443 fprintf (file, " addr: ");
3444 fprintf_vma (file, sec->addr);
3445 fprintf (file, " size: ");
3446 fprintf_vma (file, sec->size);
3447 fprintf (file, " offset: ");
3448 fprintf_vma (file, sec->offset);
3449 fprintf (file, "\n");
3450 fprintf (file, " align: %ld", sec->align);
3451 fprintf (file, " nreloc: %lu reloff: ", sec->nreloc);
3452 fprintf_vma (file, sec->reloff);
3453 fprintf (file, "\n");
3454 fprintf (file, " flags: %08lx (type: %s", sec->flags,
3455 bfd_mach_o_get_name (bfd_mach_o_section_type_name,
3456 sec->flags & BFD_MACH_O_SECTION_TYPE_MASK));
3457 fprintf (file, " attr: ");
3458 bfd_mach_o_print_flags (bfd_mach_o_section_attribute_name,
3459 sec->flags & BFD_MACH_O_SECTION_ATTRIBUTES_MASK,
3460 file);
3461 fprintf (file, ")\n");
3462 switch (sec->flags & BFD_MACH_O_SECTION_TYPE_MASK)
3463 {
3464 case BFD_MACH_O_S_NON_LAZY_SYMBOL_POINTERS:
3465 case BFD_MACH_O_S_LAZY_SYMBOL_POINTERS:
3466 case BFD_MACH_O_S_SYMBOL_STUBS:
3467 fprintf (file, " first indirect sym: %lu", sec->reserved1);
3468 fprintf (file, " (%u entries)",
3469 bfd_mach_o_section_get_nbr_indirect (abfd, sec));
3470 break;
3471 default:
3472 fprintf (file, " reserved1: 0x%lx", sec->reserved1);
3473 break;
3474 }
3475 switch (sec->flags & BFD_MACH_O_SECTION_TYPE_MASK)
3476 {
3477 case BFD_MACH_O_S_SYMBOL_STUBS:
3478 fprintf (file, " stub size: %lu", sec->reserved2);
3479 break;
3480 default:
3481 fprintf (file, " reserved2: 0x%lx", sec->reserved2);
3482 break;
3483 }
3484 fprintf (file, " reserved3: 0x%lx\n", sec->reserved3);
3485 }
3486
3487 static void
3488 bfd_mach_o_print_segment (bfd *abfd ATTRIBUTE_UNUSED,
3489 bfd_mach_o_load_command *cmd, FILE *file)
3490 {
3491 bfd_mach_o_segment_command *seg = &cmd->command.segment;
3492 unsigned int i;
3493
3494 fprintf (file, " name: %s\n", *seg->segname ? seg->segname : "*none*");
3495 fprintf (file, " vmaddr: ");
3496 fprintf_vma (file, seg->vmaddr);
3497 fprintf (file, " vmsize: ");
3498 fprintf_vma (file, seg->vmsize);
3499 fprintf (file, "\n");
3500 fprintf (file, " fileoff: ");
3501 fprintf_vma (file, seg->fileoff);
3502 fprintf (file, " filesize: ");
3503 fprintf_vma (file, (bfd_vma)seg->filesize);
3504 fprintf (file, " endoff: ");
3505 fprintf_vma (file, (bfd_vma)(seg->fileoff + seg->filesize));
3506 fprintf (file, "\n");
3507 fprintf (file, " nsects: %lu ", seg->nsects);
3508 fprintf (file, " flags: %lx\n", seg->flags);
3509 for (i = 0; i < seg->nsects; i++)
3510 bfd_mach_o_print_section (abfd, &seg->sections[i], file);
3511 }
3512
3513 static void
3514 bfd_mach_o_print_dysymtab (bfd *abfd ATTRIBUTE_UNUSED,
3515 bfd_mach_o_load_command *cmd, FILE *file)
3516 {
3517 bfd_mach_o_dysymtab_command *dysymtab = &cmd->command.dysymtab;
3518 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
3519 unsigned int i;
3520
3521 fprintf (file, " local symbols: idx: %10lu num: %-8lu",
3522 dysymtab->ilocalsym, dysymtab->nlocalsym);
3523 fprintf (file, " (nxtidx: %lu)\n",
3524 dysymtab->ilocalsym + dysymtab->nlocalsym);
3525 fprintf (file, " external symbols: idx: %10lu num: %-8lu",
3526 dysymtab->iextdefsym, dysymtab->nextdefsym);
3527 fprintf (file, " (nxtidx: %lu)\n",
3528 dysymtab->iextdefsym + dysymtab->nextdefsym);
3529 fprintf (file, " undefined symbols: idx: %10lu num: %-8lu",
3530 dysymtab->iundefsym, dysymtab->nundefsym);
3531 fprintf (file, " (nxtidx: %lu)\n",
3532 dysymtab->iundefsym + dysymtab->nundefsym);
3533 fprintf (file, " table of content: off: 0x%08lx num: %-8lu",
3534 dysymtab->tocoff, dysymtab->ntoc);
3535 fprintf (file, " (endoff: 0x%08lx)\n",
3536 dysymtab->tocoff
3537 + dysymtab->ntoc * BFD_MACH_O_TABLE_OF_CONTENT_SIZE);
3538 fprintf (file, " module table: off: 0x%08lx num: %-8lu",
3539 dysymtab->modtaboff, dysymtab->nmodtab);
3540 fprintf (file, " (endoff: 0x%08lx)\n",
3541 dysymtab->modtaboff + dysymtab->nmodtab
3542 * (mach_o_wide_p (&mdata->header) ?
3543 BFD_MACH_O_DYLIB_MODULE_64_SIZE : BFD_MACH_O_DYLIB_MODULE_SIZE));
3544 fprintf (file, " external reference table: off: 0x%08lx num: %-8lu",
3545 dysymtab->extrefsymoff, dysymtab->nextrefsyms);
3546 fprintf (file, " (endoff: 0x%08lx)\n",
3547 dysymtab->extrefsymoff
3548 + dysymtab->nextrefsyms * BFD_MACH_O_REFERENCE_SIZE);
3549 fprintf (file, " indirect symbol table: off: 0x%08lx num: %-8lu",
3550 dysymtab->indirectsymoff, dysymtab->nindirectsyms);
3551 fprintf (file, " (endoff: 0x%08lx)\n",
3552 dysymtab->indirectsymoff
3553 + dysymtab->nindirectsyms * BFD_MACH_O_INDIRECT_SYMBOL_SIZE);
3554 fprintf (file, " external relocation table: off: 0x%08lx num: %-8lu",
3555 dysymtab->extreloff, dysymtab->nextrel);
3556 fprintf (file, " (endoff: 0x%08lx)\n",
3557 dysymtab->extreloff + dysymtab->nextrel * BFD_MACH_O_RELENT_SIZE);
3558 fprintf (file, " local relocation table: off: 0x%08lx num: %-8lu",
3559 dysymtab->locreloff, dysymtab->nlocrel);
3560 fprintf (file, " (endoff: 0x%08lx)\n",
3561 dysymtab->locreloff + dysymtab->nlocrel * BFD_MACH_O_RELENT_SIZE);
3562
3563 if (dysymtab->ntoc > 0
3564 || dysymtab->nindirectsyms > 0
3565 || dysymtab->nextrefsyms > 0)
3566 {
3567 /* Try to read the symbols to display the toc or indirect symbols. */
3568 bfd_mach_o_read_symtab_symbols (abfd);
3569 }
3570 else if (dysymtab->nmodtab > 0)
3571 {
3572 /* Try to read the strtab to display modules name. */
3573 bfd_mach_o_read_symtab_strtab (abfd);
3574 }
3575
3576 for (i = 0; i < dysymtab->nmodtab; i++)
3577 {
3578 bfd_mach_o_dylib_module *module = &dysymtab->dylib_module[i];
3579 fprintf (file, " module %u:\n", i);
3580 fprintf (file, " name: %lu", module->module_name_idx);
3581 if (mdata->symtab && mdata->symtab->strtab)
3582 fprintf (file, ": %s",
3583 mdata->symtab->strtab + module->module_name_idx);
3584 fprintf (file, "\n");
3585 fprintf (file, " extdefsym: idx: %8lu num: %lu\n",
3586 module->iextdefsym, module->nextdefsym);
3587 fprintf (file, " refsym: idx: %8lu num: %lu\n",
3588 module->irefsym, module->nrefsym);
3589 fprintf (file, " localsym: idx: %8lu num: %lu\n",
3590 module->ilocalsym, module->nlocalsym);
3591 fprintf (file, " extrel: idx: %8lu num: %lu\n",
3592 module->iextrel, module->nextrel);
3593 fprintf (file, " init: idx: %8u num: %u\n",
3594 module->iinit, module->ninit);
3595 fprintf (file, " term: idx: %8u num: %u\n",
3596 module->iterm, module->nterm);
3597 fprintf (file, " objc_module_info: addr: ");
3598 fprintf_vma (file, module->objc_module_info_addr);
3599 fprintf (file, " size: %lu\n", module->objc_module_info_size);
3600 }
3601
3602 if (dysymtab->ntoc > 0)
3603 {
3604 bfd_mach_o_symtab_command *symtab = mdata->symtab;
3605
3606 fprintf (file, " table of content: (symbol/module)\n");
3607 for (i = 0; i < dysymtab->ntoc; i++)
3608 {
3609 bfd_mach_o_dylib_table_of_content *toc = &dysymtab->dylib_toc[i];
3610
3611 fprintf (file, " %4u: ", i);
3612 if (symtab && symtab->symbols && toc->symbol_index < symtab->nsyms)
3613 {
3614 const char *name = symtab->symbols[toc->symbol_index].symbol.name;
3615 fprintf (file, "%s (%lu)", name ? name : "*invalid*",
3616 toc->symbol_index);
3617 }
3618 else
3619 fprintf (file, "%lu", toc->symbol_index);
3620
3621 fprintf (file, " / ");
3622 if (symtab && symtab->strtab
3623 && toc->module_index < dysymtab->nmodtab)
3624 {
3625 bfd_mach_o_dylib_module *mod;
3626 mod = &dysymtab->dylib_module[toc->module_index];
3627 fprintf (file, "%s (%lu)",
3628 symtab->strtab + mod->module_name_idx,
3629 toc->module_index);
3630 }
3631 else
3632 fprintf (file, "%lu", toc->module_index);
3633
3634 fprintf (file, "\n");
3635 }
3636 }
3637
3638 if (dysymtab->nindirectsyms != 0)
3639 {
3640 fprintf (file, " indirect symbols:\n");
3641
3642 for (i = 0; i < mdata->nsects; i++)
3643 {
3644 bfd_mach_o_section *sec = mdata->sections[i];
3645 unsigned int j, first, last;
3646 bfd_mach_o_symtab_command *symtab = mdata->symtab;
3647 bfd_vma addr;
3648 bfd_vma entry_size;
3649
3650 switch (sec->flags & BFD_MACH_O_SECTION_TYPE_MASK)
3651 {
3652 case BFD_MACH_O_S_NON_LAZY_SYMBOL_POINTERS:
3653 case BFD_MACH_O_S_LAZY_SYMBOL_POINTERS:
3654 case BFD_MACH_O_S_SYMBOL_STUBS:
3655 first = sec->reserved1;
3656 last = first + bfd_mach_o_section_get_nbr_indirect (abfd, sec);
3657 addr = sec->addr;
3658 entry_size = bfd_mach_o_section_get_entry_size (abfd, sec);
3659 fprintf (file, " for section %s.%s:\n",
3660 sec->segname, sec->sectname);
3661 for (j = first; j < last; j++)
3662 {
3663 unsigned int isym = dysymtab->indirect_syms[j];
3664
3665 fprintf (file, " ");
3666 fprintf_vma (file, addr);
3667 fprintf (file, " %5u: 0x%08x", j, isym);
3668 if (isym & BFD_MACH_O_INDIRECT_SYMBOL_LOCAL)
3669 fprintf (file, " LOCAL");
3670 if (isym & BFD_MACH_O_INDIRECT_SYMBOL_ABS)
3671 fprintf (file, " ABSOLUTE");
3672 if (symtab && symtab->symbols
3673 && isym < symtab->nsyms
3674 && symtab->symbols[isym].symbol.name)
3675 fprintf (file, " %s", symtab->symbols[isym].symbol.name);
3676 fprintf (file, "\n");
3677 addr += entry_size;
3678 }
3679 break;
3680 default:
3681 break;
3682 }
3683 }
3684 }
3685 if (dysymtab->nextrefsyms > 0)
3686 {
3687 bfd_mach_o_symtab_command *symtab = mdata->symtab;
3688
3689 fprintf (file, " external reference table: (symbol flags)\n");
3690 for (i = 0; i < dysymtab->nextrefsyms; i++)
3691 {
3692 bfd_mach_o_dylib_reference *ref = &dysymtab->ext_refs[i];
3693
3694 fprintf (file, " %4u: %5lu 0x%02lx", i, ref->isym, ref->flags);
3695 if (symtab && symtab->symbols
3696 && ref->isym < symtab->nsyms
3697 && symtab->symbols[ref->isym].symbol.name)
3698 fprintf (file, " %s", symtab->symbols[ref->isym].symbol.name);
3699 fprintf (file, "\n");
3700 }
3701 }
3702
3703 }
3704
3705 static void
3706 bfd_mach_o_print_dyld_info (bfd *abfd ATTRIBUTE_UNUSED,
3707 bfd_mach_o_load_command *cmd, FILE *file)
3708 {
3709 bfd_mach_o_dyld_info_command *info = &cmd->command.dyld_info;
3710
3711 fprintf (file, " rebase: off: 0x%08x size: %-8u\n",
3712 info->rebase_off, info->rebase_size);
3713 fprintf (file, " bind: off: 0x%08x size: %-8u\n",
3714 info->bind_off, info->bind_size);
3715 fprintf (file, " weak bind: off: 0x%08x size: %-8u\n",
3716 info->weak_bind_off, info->weak_bind_size);
3717 fprintf (file, " lazy bind: off: 0x%08x size: %-8u\n",
3718 info->lazy_bind_off, info->lazy_bind_size);
3719 fprintf (file, " export: off: 0x%08x size: %-8u\n",
3720 info->export_off, info->export_size);
3721 }
3722
3723 bfd_boolean
3724 bfd_mach_o_bfd_print_private_bfd_data (bfd *abfd, void * ptr)
3725 {
3726 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
3727 FILE *file = (FILE *) ptr;
3728 unsigned int i;
3729
3730 bfd_mach_o_print_private_header (abfd, file);
3731 fputc ('\n', file);
3732
3733 for (i = 0; i < mdata->header.ncmds; i++)
3734 {
3735 bfd_mach_o_load_command *cmd = &mdata->commands[i];
3736
3737 fprintf (file, "Load command %s:",
3738 bfd_mach_o_get_name (bfd_mach_o_load_command_name, cmd->type));
3739 switch (cmd->type)
3740 {
3741 case BFD_MACH_O_LC_SEGMENT:
3742 case BFD_MACH_O_LC_SEGMENT_64:
3743 bfd_mach_o_print_segment (abfd, cmd, file);
3744 break;
3745 case BFD_MACH_O_LC_UUID:
3746 {
3747 bfd_mach_o_uuid_command *uuid = &cmd->command.uuid;
3748 unsigned int j;
3749
3750 for (j = 0; j < sizeof (uuid->uuid); j ++)
3751 fprintf (file, " %02x", uuid->uuid[j]);
3752 fputc ('\n', file);
3753 }
3754 break;
3755 case BFD_MACH_O_LC_LOAD_DYLIB:
3756 case BFD_MACH_O_LC_LOAD_WEAK_DYLIB:
3757 case BFD_MACH_O_LC_REEXPORT_DYLIB:
3758 case BFD_MACH_O_LC_ID_DYLIB:
3759 {
3760 bfd_mach_o_dylib_command *dylib = &cmd->command.dylib;
3761 fprintf (file, " %s\n", dylib->name_str);
3762 fprintf (file, " time stamp: 0x%08lx\n",
3763 dylib->timestamp);
3764 fprintf (file, " current version: 0x%08lx\n",
3765 dylib->current_version);
3766 fprintf (file, " comptibility version: 0x%08lx\n",
3767 dylib->compatibility_version);
3768 break;
3769 }
3770 case BFD_MACH_O_LC_LOAD_DYLINKER:
3771 case BFD_MACH_O_LC_ID_DYLINKER:
3772 fprintf (file, " %s\n", cmd->command.dylinker.name_str);
3773 break;
3774 case BFD_MACH_O_LC_SYMTAB:
3775 {
3776 bfd_mach_o_symtab_command *symtab = &cmd->command.symtab;
3777 fprintf (file,
3778 "\n"
3779 " symoff: 0x%08x nsyms: %8u (endoff: 0x%08x)\n",
3780 symtab->symoff, symtab->nsyms,
3781 symtab->symoff + symtab->nsyms
3782 * (mach_o_wide_p (&mdata->header)
3783 ? BFD_MACH_O_NLIST_64_SIZE : BFD_MACH_O_NLIST_SIZE));
3784 fprintf (file,
3785 " stroff: 0x%08x strsize: %8u (endoff: 0x%08x)\n",
3786 symtab->stroff, symtab->strsize,
3787 symtab->stroff + symtab->strsize);
3788 break;
3789 }
3790 case BFD_MACH_O_LC_DYSYMTAB:
3791 fprintf (file, "\n");
3792 bfd_mach_o_print_dysymtab (abfd, cmd, file);
3793 break;
3794 case BFD_MACH_O_LC_CODE_SIGNATURE:
3795 case BFD_MACH_O_LC_SEGMENT_SPLIT_INFO:
3796 {
3797 bfd_mach_o_linkedit_command *linkedit = &cmd->command.linkedit;
3798 fprintf
3799 (file, "\n"
3800 " dataoff: 0x%08lx datasize: 0x%08lx (endoff: 0x%08lx)\n",
3801 linkedit->dataoff, linkedit->datasize,
3802 linkedit->dataoff + linkedit->datasize);
3803 break;
3804 }
3805 case BFD_MACH_O_LC_SUB_FRAMEWORK:
3806 case BFD_MACH_O_LC_SUB_UMBRELLA:
3807 case BFD_MACH_O_LC_SUB_LIBRARY:
3808 case BFD_MACH_O_LC_SUB_CLIENT:
3809 case BFD_MACH_O_LC_RPATH:
3810 {
3811 bfd_mach_o_str_command *str = &cmd->command.str;
3812 fprintf (file, " %s\n", str->str);
3813 break;
3814 }
3815 case BFD_MACH_O_LC_THREAD:
3816 case BFD_MACH_O_LC_UNIXTHREAD:
3817 {
3818 bfd_mach_o_thread_command *thread = &cmd->command.thread;
3819 unsigned int j;
3820 bfd_mach_o_backend_data *bed = bfd_mach_o_get_backend_data (abfd);
3821
3822 fprintf (file, " nflavours: %lu\n", thread->nflavours);
3823 for (j = 0; j < thread->nflavours; j++)
3824 {
3825 bfd_mach_o_thread_flavour *flavour = &thread->flavours[j];
3826
3827 fprintf (file, " %2u: flavour: 0x%08lx offset: 0x%08lx"
3828 " size: 0x%08lx\n",
3829 j, flavour->flavour, flavour->offset,
3830 flavour->size);
3831 if (bed->_bfd_mach_o_print_thread)
3832 {
3833 char *buf = bfd_malloc (flavour->size);
3834
3835 if (buf
3836 && bfd_seek (abfd, flavour->offset, SEEK_SET) == 0
3837 && (bfd_bread (buf, flavour->size, abfd)
3838 == flavour->size))
3839 (*bed->_bfd_mach_o_print_thread)(abfd, flavour,
3840 file, buf);
3841 free (buf);
3842 }
3843 }
3844 break;
3845 }
3846 case BFD_MACH_O_LC_DYLD_INFO:
3847 fprintf (file, "\n");
3848 bfd_mach_o_print_dyld_info (abfd, cmd, file);
3849 break;
3850 default:
3851 fprintf (file, "\n");
3852 break;
3853 }
3854 fputc ('\n', file);
3855 }
3856
3857 bfd_mach_o_print_section_map (abfd, file);
3858
3859 return TRUE;
3860 }
3861
3862 int
3863 bfd_mach_o_core_fetch_environment (bfd *abfd,
3864 unsigned char **rbuf,
3865 unsigned int *rlen)
3866 {
3867 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
3868 unsigned long stackaddr = bfd_mach_o_stack_addr (mdata->header.cputype);
3869 unsigned int i = 0;
3870
3871 for (i = 0; i < mdata->header.ncmds; i++)
3872 {
3873 bfd_mach_o_load_command *cur = &mdata->commands[i];
3874 bfd_mach_o_segment_command *seg = NULL;
3875
3876 if (cur->type != BFD_MACH_O_LC_SEGMENT)
3877 continue;
3878
3879 seg = &cur->command.segment;
3880
3881 if ((seg->vmaddr + seg->vmsize) == stackaddr)
3882 {
3883 unsigned long start = seg->fileoff;
3884 unsigned long end = seg->fileoff + seg->filesize;
3885 unsigned char *buf = bfd_malloc (1024);
3886 unsigned long size = 1024;
3887
3888 for (;;)
3889 {
3890 bfd_size_type nread = 0;
3891 unsigned long offset;
3892 int found_nonnull = 0;
3893
3894 if (size > (end - start))
3895 size = (end - start);
3896
3897 buf = bfd_realloc_or_free (buf, size);
3898 if (buf == NULL)
3899 return -1;
3900
3901 if (bfd_seek (abfd, end - size, SEEK_SET) != 0)
3902 {
3903 free (buf);
3904 return -1;
3905 }
3906
3907 nread = bfd_bread (buf, size, abfd);
3908
3909 if (nread != size)
3910 {
3911 free (buf);
3912 return -1;
3913 }
3914
3915 for (offset = 4; offset <= size; offset += 4)
3916 {
3917 unsigned long val;
3918
3919 val = *((unsigned long *) (buf + size - offset));
3920 if (! found_nonnull)
3921 {
3922 if (val != 0)
3923 found_nonnull = 1;
3924 }
3925 else if (val == 0x0)
3926 {
3927 unsigned long bottom;
3928 unsigned long top;
3929
3930 bottom = seg->fileoff + seg->filesize - offset;
3931 top = seg->fileoff + seg->filesize - 4;
3932 *rbuf = bfd_malloc (top - bottom);
3933 *rlen = top - bottom;
3934
3935 memcpy (*rbuf, buf + size - *rlen, *rlen);
3936 free (buf);
3937 return 0;
3938 }
3939 }
3940
3941 if (size == (end - start))
3942 break;
3943
3944 size *= 2;
3945 }
3946
3947 free (buf);
3948 }
3949 }
3950
3951 return -1;
3952 }
3953
3954 char *
3955 bfd_mach_o_core_file_failing_command (bfd *abfd)
3956 {
3957 unsigned char *buf = NULL;
3958 unsigned int len = 0;
3959 int ret = -1;
3960
3961 ret = bfd_mach_o_core_fetch_environment (abfd, &buf, &len);
3962 if (ret < 0)
3963 return NULL;
3964
3965 return (char *) buf;
3966 }
3967
3968 int
3969 bfd_mach_o_core_file_failing_signal (bfd *abfd ATTRIBUTE_UNUSED)
3970 {
3971 return 0;
3972 }
3973
3974 #define bfd_mach_o_bfd_reloc_type_lookup _bfd_norelocs_bfd_reloc_type_lookup
3975 #define bfd_mach_o_bfd_reloc_name_lookup _bfd_norelocs_bfd_reloc_name_lookup
3976
3977 #define bfd_mach_o_swap_reloc_in NULL
3978 #define bfd_mach_o_swap_reloc_out NULL
3979 #define bfd_mach_o_print_thread NULL
3980
3981 #define TARGET_NAME mach_o_be_vec
3982 #define TARGET_STRING "mach-o-be"
3983 #define TARGET_BIG_ENDIAN 1
3984 #define TARGET_ARCHIVE 0
3985 #include "mach-o-target.c"
3986
3987 #undef TARGET_NAME
3988 #undef TARGET_STRING
3989 #undef TARGET_BIG_ENDIAN
3990 #undef TARGET_ARCHIVE
3991
3992 #define TARGET_NAME mach_o_le_vec
3993 #define TARGET_STRING "mach-o-le"
3994 #define TARGET_BIG_ENDIAN 0
3995 #define TARGET_ARCHIVE 0
3996
3997 #include "mach-o-target.c"
3998
3999 #undef TARGET_NAME
4000 #undef TARGET_STRING
4001 #undef TARGET_BIG_ENDIAN
4002 #undef TARGET_ARCHIVE
4003
4004 #define TARGET_NAME mach_o_fat_vec
4005 #define TARGET_STRING "mach-o-fat"
4006 #define TARGET_BIG_ENDIAN 1
4007 #define TARGET_ARCHIVE 1
4008
4009 #include "mach-o-target.c"
4010
4011 #undef TARGET_NAME
4012 #undef TARGET_STRING
4013 #undef TARGET_BIG_ENDIAN
4014 #undef TARGET_ARCHIVE
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