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2011-12-05 Tristan Gingold <gingold@adacore.com>
[binutils-gdb.git] / bfd / mach-o.c
1 /* Mach-O support for BFD.
2 Copyright 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008,
3 2009, 2010, 2011
4 Free Software Foundation, Inc.
5
6 This file is part of BFD, the Binary File Descriptor library.
7
8 This program is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 3 of the License, or
11 (at your option) any later version.
12
13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
17
18 You should have received a copy of the GNU General Public License
19 along with this program; if not, write to the Free Software
20 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
21 MA 02110-1301, USA. */
22
23 #include "sysdep.h"
24 #include "mach-o.h"
25 #include "bfd.h"
26 #include "libbfd.h"
27 #include "libiberty.h"
28 #include "aout/stab_gnu.h"
29 #include "mach-o/reloc.h"
30 #include "mach-o/external.h"
31 #include <ctype.h>
32
33 #define bfd_mach_o_object_p bfd_mach_o_gen_object_p
34 #define bfd_mach_o_core_p bfd_mach_o_gen_core_p
35 #define bfd_mach_o_mkobject bfd_mach_o_gen_mkobject
36
37 #define FILE_ALIGN(off, algn) \
38 (((off) + ((file_ptr) 1 << (algn)) - 1) & ((file_ptr) -1 << (algn)))
39
40 static int bfd_mach_o_read_symtab_symbols (bfd *);
41
42 unsigned int
43 bfd_mach_o_version (bfd *abfd)
44 {
45 bfd_mach_o_data_struct *mdata = NULL;
46
47 BFD_ASSERT (bfd_mach_o_valid (abfd));
48 mdata = bfd_mach_o_get_data (abfd);
49
50 return mdata->header.version;
51 }
52
53 bfd_boolean
54 bfd_mach_o_valid (bfd *abfd)
55 {
56 if (abfd == NULL || abfd->xvec == NULL)
57 return FALSE;
58
59 if (abfd->xvec->flavour != bfd_target_mach_o_flavour)
60 return FALSE;
61
62 if (bfd_mach_o_get_data (abfd) == NULL)
63 return FALSE;
64 return TRUE;
65 }
66
67 static INLINE bfd_boolean
68 mach_o_wide_p (bfd_mach_o_header *header)
69 {
70 switch (header->version)
71 {
72 case 1:
73 return FALSE;
74 case 2:
75 return TRUE;
76 default:
77 BFD_FAIL ();
78 return FALSE;
79 }
80 }
81
82 static INLINE bfd_boolean
83 bfd_mach_o_wide_p (bfd *abfd)
84 {
85 return mach_o_wide_p (&bfd_mach_o_get_data (abfd)->header);
86 }
87
88 /* Tables to translate well known Mach-O segment/section names to bfd
89 names. Use of canonical names (such as .text or .debug_frame) is required
90 by gdb. */
91
92 struct mach_o_section_name_xlat
93 {
94 const char *bfd_name;
95 const char *mach_o_name;
96 flagword flags;
97 };
98
99 static const struct mach_o_section_name_xlat dwarf_section_names_xlat[] =
100 {
101 { ".debug_frame", "__debug_frame", SEC_DEBUGGING },
102 { ".debug_info", "__debug_info", SEC_DEBUGGING },
103 { ".debug_abbrev", "__debug_abbrev", SEC_DEBUGGING },
104 { ".debug_aranges", "__debug_aranges", SEC_DEBUGGING },
105 { ".debug_macinfo", "__debug_macinfo", SEC_DEBUGGING },
106 { ".debug_line", "__debug_line", SEC_DEBUGGING },
107 { ".debug_loc", "__debug_loc", SEC_DEBUGGING },
108 { ".debug_pubnames", "__debug_pubnames", SEC_DEBUGGING },
109 { ".debug_pubtypes", "__debug_pubtypes", SEC_DEBUGGING },
110 { ".debug_str", "__debug_str", SEC_DEBUGGING },
111 { ".debug_ranges", "__debug_ranges", SEC_DEBUGGING },
112 { NULL, NULL, 0}
113 };
114
115 static const struct mach_o_section_name_xlat text_section_names_xlat[] =
116 {
117 { ".text", "__text", SEC_CODE | SEC_LOAD },
118 { ".const", "__const", SEC_READONLY | SEC_DATA | SEC_LOAD },
119 { ".cstring", "__cstring", SEC_READONLY | SEC_DATA | SEC_LOAD },
120 { ".eh_frame", "__eh_frame", SEC_READONLY | SEC_LOAD },
121 { NULL, NULL, 0}
122 };
123
124 static const struct mach_o_section_name_xlat data_section_names_xlat[] =
125 {
126 { ".data", "__data", SEC_DATA | SEC_LOAD },
127 { ".const_data", "__const", SEC_DATA | SEC_LOAD },
128 { ".dyld", "__dyld", SEC_DATA | SEC_LOAD },
129 { ".lazy_symbol_ptr", "__la_symbol_ptr", SEC_DATA | SEC_LOAD },
130 { ".non_lazy_symbol_ptr", "__nl_symbol_ptr", SEC_DATA | SEC_LOAD },
131 { ".bss", "__bss", SEC_NO_FLAGS },
132 { NULL, NULL, 0}
133 };
134
135 struct mach_o_segment_name_xlat
136 {
137 /* Segment name. */
138 const char *segname;
139
140 /* List of known sections for the segment. */
141 const struct mach_o_section_name_xlat *sections;
142 };
143
144 /* List of known segment names. */
145
146 static const struct mach_o_segment_name_xlat segsec_names_xlat[] =
147 {
148 { "__TEXT", text_section_names_xlat },
149 { "__DATA", data_section_names_xlat },
150 { "__DWARF", dwarf_section_names_xlat },
151 { NULL, NULL }
152 };
153
154 /* Mach-O to bfd names. */
155
156 void
157 bfd_mach_o_normalize_section_name (const char *segname, const char *sectname,
158 const char **name, flagword *flags)
159 {
160 const struct mach_o_segment_name_xlat *seg;
161
162 *name = NULL;
163 *flags = SEC_NO_FLAGS;
164
165 for (seg = segsec_names_xlat; seg->segname; seg++)
166 {
167 if (strncmp (seg->segname, segname, BFD_MACH_O_SEGNAME_SIZE) == 0)
168 {
169 const struct mach_o_section_name_xlat *sec;
170
171 for (sec = seg->sections; sec->mach_o_name; sec++)
172 {
173 if (strncmp (sec->mach_o_name, sectname,
174 BFD_MACH_O_SECTNAME_SIZE) == 0)
175 {
176 *name = sec->bfd_name;
177 *flags = sec->flags;
178 return;
179 }
180 }
181 return;
182 }
183 }
184 }
185
186 /* Convert Mach-O section name to BFD. Try to use standard names, otherwise
187 forge a new name. SEGNAME and SECTNAME are 16 bytes strings. */
188
189 static void
190 bfd_mach_o_convert_section_name_to_bfd
191 (bfd *abfd, const char *segname, const char *sectname,
192 const char **name, flagword *flags)
193 {
194 char *res;
195 unsigned int len;
196 const char *pfx = "";
197
198 /* First search for a canonical name. */
199 bfd_mach_o_normalize_section_name (segname, sectname, name, flags);
200
201 /* Return now if found. */
202 if (*name)
203 return;
204
205 len = 16 + 1 + 16 + 1;
206
207 /* Put "LC_SEGMENT." prefix if the segment name is weird (ie doesn't start
208 with an underscore. */
209 if (segname[0] != '_')
210 {
211 static const char seg_pfx[] = "LC_SEGMENT.";
212
213 pfx = seg_pfx;
214 len += sizeof (seg_pfx) - 1;
215 }
216
217 res = bfd_alloc (abfd, len);
218 if (res == NULL)
219 return;
220 snprintf (res, len, "%s%.16s.%.16s", pfx, segname, sectname);
221 *name = res;
222 *flags = SEC_NO_FLAGS;
223 }
224
225 /* Convert a bfd section name to a Mach-O segment + section name. */
226
227 static void
228 bfd_mach_o_convert_section_name_to_mach_o (bfd *abfd ATTRIBUTE_UNUSED,
229 asection *sect,
230 bfd_mach_o_section *section)
231 {
232 const struct mach_o_segment_name_xlat *seg;
233 const char *name = bfd_get_section_name (abfd, sect);
234 const char *dot;
235 unsigned int len;
236 unsigned int seglen;
237 unsigned int seclen;
238
239 /* List of well known names. They all start with a dot. */
240 if (name[0] == '.')
241 for (seg = segsec_names_xlat; seg->segname; seg++)
242 {
243 const struct mach_o_section_name_xlat *sec;
244
245 for (sec = seg->sections; sec->mach_o_name; sec++)
246 {
247 if (strcmp (sec->bfd_name, name) == 0)
248 {
249 strcpy (section->segname, seg->segname);
250 strcpy (section->sectname, sec->mach_o_name);
251 return;
252 }
253 }
254 }
255
256 /* Strip LC_SEGMENT. prefix. */
257 if (strncmp (name, "LC_SEGMENT.", 11) == 0)
258 name += 11;
259
260 /* Find a dot. */
261 dot = strchr (name, '.');
262 len = strlen (name);
263
264 /* Try to split name into segment and section names. */
265 if (dot && dot != name)
266 {
267 seglen = dot - name;
268 seclen = len - (dot + 1 - name);
269
270 if (seglen < 16 && seclen < 16)
271 {
272 memcpy (section->segname, name, seglen);
273 section->segname[seglen] = 0;
274 memcpy (section->sectname, dot + 1, seclen);
275 section->sectname[seclen] = 0;
276 return;
277 }
278 }
279
280 if (len > 16)
281 len = 16;
282 memcpy (section->segname, name, len);
283 section->segname[len] = 0;
284 memcpy (section->sectname, name, len);
285 section->sectname[len] = 0;
286 }
287
288 /* Return the size of an entry for section SEC.
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_entry_size (bfd *abfd, bfd_mach_o_section *sec)
294 {
295 switch (sec->flags & BFD_MACH_O_SECTION_TYPE_MASK)
296 {
297 case BFD_MACH_O_S_NON_LAZY_SYMBOL_POINTERS:
298 case BFD_MACH_O_S_LAZY_SYMBOL_POINTERS:
299 return bfd_mach_o_wide_p (abfd) ? 8 : 4;
300 case BFD_MACH_O_S_SYMBOL_STUBS:
301 return sec->reserved2;
302 default:
303 BFD_FAIL ();
304 return 0;
305 }
306 }
307
308 /* Return the number of indirect symbols for a section.
309 Must be called only for symbol pointer section and symbol stubs
310 sections. */
311
312 static unsigned int
313 bfd_mach_o_section_get_nbr_indirect (bfd *abfd, bfd_mach_o_section *sec)
314 {
315 unsigned int elsz;
316
317 elsz = bfd_mach_o_section_get_entry_size (abfd, sec);
318 if (elsz == 0)
319 return 0;
320 else
321 return sec->size / elsz;
322 }
323
324
325 /* Copy any private info we understand from the input symbol
326 to the output symbol. */
327
328 bfd_boolean
329 bfd_mach_o_bfd_copy_private_symbol_data (bfd *ibfd ATTRIBUTE_UNUSED,
330 asymbol *isymbol ATTRIBUTE_UNUSED,
331 bfd *obfd ATTRIBUTE_UNUSED,
332 asymbol *osymbol ATTRIBUTE_UNUSED)
333 {
334 return TRUE;
335 }
336
337 /* Copy any private info we understand from the input section
338 to the output section. */
339
340 bfd_boolean
341 bfd_mach_o_bfd_copy_private_section_data (bfd *ibfd ATTRIBUTE_UNUSED,
342 asection *isection ATTRIBUTE_UNUSED,
343 bfd *obfd ATTRIBUTE_UNUSED,
344 asection *osection ATTRIBUTE_UNUSED)
345 {
346 return TRUE;
347 }
348
349 /* Copy any private info we understand from the input bfd
350 to the output bfd. */
351
352 bfd_boolean
353 bfd_mach_o_bfd_copy_private_bfd_data (bfd *ibfd, bfd *obfd)
354 {
355 if (bfd_get_flavour (ibfd) != bfd_target_mach_o_flavour
356 || bfd_get_flavour (obfd) != bfd_target_mach_o_flavour)
357 return TRUE;
358
359 BFD_ASSERT (bfd_mach_o_valid (ibfd));
360 BFD_ASSERT (bfd_mach_o_valid (obfd));
361
362 /* FIXME: copy commands. */
363
364 return TRUE;
365 }
366
367 /* Count the total number of symbols. */
368
369 static long
370 bfd_mach_o_count_symbols (bfd *abfd)
371 {
372 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
373
374 if (mdata->symtab == NULL)
375 return 0;
376 return mdata->symtab->nsyms;
377 }
378
379 long
380 bfd_mach_o_get_symtab_upper_bound (bfd *abfd)
381 {
382 long nsyms = bfd_mach_o_count_symbols (abfd);
383
384 return ((nsyms + 1) * sizeof (asymbol *));
385 }
386
387 long
388 bfd_mach_o_canonicalize_symtab (bfd *abfd, asymbol **alocation)
389 {
390 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
391 long nsyms = bfd_mach_o_count_symbols (abfd);
392 bfd_mach_o_symtab_command *sym = mdata->symtab;
393 unsigned long j;
394
395 if (nsyms < 0)
396 return nsyms;
397
398 if (nsyms == 0)
399 {
400 /* Do not try to read symbols if there are none. */
401 alocation[0] = NULL;
402 return 0;
403 }
404
405 if (bfd_mach_o_read_symtab_symbols (abfd) != 0)
406 {
407 (*_bfd_error_handler) (_("bfd_mach_o_canonicalize_symtab: unable to load symbols"));
408 return 0;
409 }
410
411 BFD_ASSERT (sym->symbols != NULL);
412
413 for (j = 0; j < sym->nsyms; j++)
414 alocation[j] = &sym->symbols[j].symbol;
415
416 alocation[j] = NULL;
417
418 return nsyms;
419 }
420
421 long
422 bfd_mach_o_get_synthetic_symtab (bfd *abfd,
423 long symcount ATTRIBUTE_UNUSED,
424 asymbol **syms ATTRIBUTE_UNUSED,
425 long dynsymcount ATTRIBUTE_UNUSED,
426 asymbol **dynsyms ATTRIBUTE_UNUSED,
427 asymbol **ret)
428 {
429 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
430 bfd_mach_o_dysymtab_command *dysymtab = mdata->dysymtab;
431 bfd_mach_o_symtab_command *symtab = mdata->symtab;
432 asymbol *s;
433 unsigned long count, i, j, n;
434 size_t size;
435 char *names;
436 char *nul_name;
437
438 *ret = NULL;
439
440 if (dysymtab == NULL || symtab == NULL || symtab->symbols == NULL)
441 return 0;
442
443 if (dysymtab->nindirectsyms == 0)
444 return 0;
445
446 count = dysymtab->nindirectsyms;
447 size = count * sizeof (asymbol) + 1;
448
449 for (j = 0; j < count; j++)
450 {
451 unsigned int isym = dysymtab->indirect_syms[j];
452
453 if (isym < symtab->nsyms && symtab->symbols[isym].symbol.name)
454 size += strlen (symtab->symbols[isym].symbol.name) + sizeof ("$stub");
455 }
456
457 s = *ret = (asymbol *) bfd_malloc (size);
458 if (s == NULL)
459 return -1;
460 names = (char *) (s + count);
461 nul_name = names;
462 *names++ = 0;
463
464 n = 0;
465 for (i = 0; i < mdata->nsects; i++)
466 {
467 bfd_mach_o_section *sec = mdata->sections[i];
468 unsigned int first, last;
469 bfd_vma addr;
470 bfd_vma entry_size;
471
472 switch (sec->flags & BFD_MACH_O_SECTION_TYPE_MASK)
473 {
474 case BFD_MACH_O_S_NON_LAZY_SYMBOL_POINTERS:
475 case BFD_MACH_O_S_LAZY_SYMBOL_POINTERS:
476 case BFD_MACH_O_S_SYMBOL_STUBS:
477 first = sec->reserved1;
478 last = first + bfd_mach_o_section_get_nbr_indirect (abfd, sec);
479 addr = sec->addr;
480 entry_size = bfd_mach_o_section_get_entry_size (abfd, sec);
481 for (j = first; j < last; j++)
482 {
483 unsigned int isym = dysymtab->indirect_syms[j];
484
485 s->flags = BSF_GLOBAL | BSF_SYNTHETIC;
486 s->section = sec->bfdsection;
487 s->value = addr - sec->addr;
488 s->udata.p = NULL;
489
490 if (isym < symtab->nsyms
491 && symtab->symbols[isym].symbol.name)
492 {
493 const char *sym = symtab->symbols[isym].symbol.name;
494 size_t len;
495
496 s->name = names;
497 len = strlen (sym);
498 memcpy (names, sym, len);
499 names += len;
500 memcpy (names, "$stub", sizeof ("$stub"));
501 names += sizeof ("$stub");
502 }
503 else
504 s->name = nul_name;
505
506 addr += entry_size;
507 s++;
508 n++;
509 }
510 break;
511 default:
512 break;
513 }
514 }
515
516 return n;
517 }
518
519 void
520 bfd_mach_o_get_symbol_info (bfd *abfd ATTRIBUTE_UNUSED,
521 asymbol *symbol,
522 symbol_info *ret)
523 {
524 bfd_symbol_info (symbol, ret);
525 }
526
527 void
528 bfd_mach_o_print_symbol (bfd *abfd,
529 void * afile,
530 asymbol *symbol,
531 bfd_print_symbol_type how)
532 {
533 FILE *file = (FILE *) afile;
534 const char *name;
535 bfd_mach_o_asymbol *asym = (bfd_mach_o_asymbol *)symbol;
536
537 switch (how)
538 {
539 case bfd_print_symbol_name:
540 fprintf (file, "%s", symbol->name);
541 break;
542 default:
543 bfd_print_symbol_vandf (abfd, (void *) file, symbol);
544 if (asym->n_type & BFD_MACH_O_N_STAB)
545 name = bfd_get_stab_name (asym->n_type);
546 else
547 switch (asym->n_type & BFD_MACH_O_N_TYPE)
548 {
549 case BFD_MACH_O_N_UNDF:
550 if (symbol->value == 0)
551 name = "UND";
552 else
553 name = "COM";
554 break;
555 case BFD_MACH_O_N_ABS:
556 name = "ABS";
557 break;
558 case BFD_MACH_O_N_INDR:
559 name = "INDR";
560 break;
561 case BFD_MACH_O_N_PBUD:
562 name = "PBUD";
563 break;
564 case BFD_MACH_O_N_SECT:
565 name = "SECT";
566 break;
567 default:
568 name = "???";
569 break;
570 }
571 if (name == NULL)
572 name = "";
573 fprintf (file, " %02x %-6s %02x %04x",
574 asym->n_type, name, asym->n_sect, asym->n_desc);
575 if ((asym->n_type & BFD_MACH_O_N_STAB) == 0
576 && (asym->n_type & BFD_MACH_O_N_TYPE) == BFD_MACH_O_N_SECT)
577 fprintf (file, " [%s]", symbol->section->name);
578 fprintf (file, " %s", symbol->name);
579 }
580 }
581
582 static void
583 bfd_mach_o_convert_architecture (bfd_mach_o_cpu_type mtype,
584 bfd_mach_o_cpu_subtype msubtype ATTRIBUTE_UNUSED,
585 enum bfd_architecture *type,
586 unsigned long *subtype)
587 {
588 *subtype = bfd_arch_unknown;
589
590 switch (mtype)
591 {
592 case BFD_MACH_O_CPU_TYPE_VAX: *type = bfd_arch_vax; break;
593 case BFD_MACH_O_CPU_TYPE_MC680x0: *type = bfd_arch_m68k; break;
594 case BFD_MACH_O_CPU_TYPE_I386:
595 *type = bfd_arch_i386;
596 *subtype = bfd_mach_i386_i386;
597 break;
598 case BFD_MACH_O_CPU_TYPE_X86_64:
599 *type = bfd_arch_i386;
600 *subtype = bfd_mach_x86_64;
601 break;
602 case BFD_MACH_O_CPU_TYPE_MIPS: *type = bfd_arch_mips; break;
603 case BFD_MACH_O_CPU_TYPE_MC98000: *type = bfd_arch_m98k; break;
604 case BFD_MACH_O_CPU_TYPE_HPPA: *type = bfd_arch_hppa; break;
605 case BFD_MACH_O_CPU_TYPE_ARM: *type = bfd_arch_arm; break;
606 case BFD_MACH_O_CPU_TYPE_MC88000: *type = bfd_arch_m88k; break;
607 case BFD_MACH_O_CPU_TYPE_SPARC:
608 *type = bfd_arch_sparc;
609 *subtype = bfd_mach_sparc;
610 break;
611 case BFD_MACH_O_CPU_TYPE_I860: *type = bfd_arch_i860; break;
612 case BFD_MACH_O_CPU_TYPE_ALPHA: *type = bfd_arch_alpha; break;
613 case BFD_MACH_O_CPU_TYPE_POWERPC:
614 *type = bfd_arch_powerpc;
615 *subtype = bfd_mach_ppc;
616 break;
617 case BFD_MACH_O_CPU_TYPE_POWERPC_64:
618 *type = bfd_arch_powerpc;
619 *subtype = bfd_mach_ppc64;
620 break;
621 default:
622 *type = bfd_arch_unknown;
623 break;
624 }
625 }
626
627 static bfd_boolean
628 bfd_mach_o_write_header (bfd *abfd, bfd_mach_o_header *header)
629 {
630 struct mach_o_header_external raw;
631 unsigned int size;
632
633 size = mach_o_wide_p (header) ?
634 BFD_MACH_O_HEADER_64_SIZE : BFD_MACH_O_HEADER_SIZE;
635
636 bfd_h_put_32 (abfd, header->magic, raw.magic);
637 bfd_h_put_32 (abfd, header->cputype, raw.cputype);
638 bfd_h_put_32 (abfd, header->cpusubtype, raw.cpusubtype);
639 bfd_h_put_32 (abfd, header->filetype, raw.filetype);
640 bfd_h_put_32 (abfd, header->ncmds, raw.ncmds);
641 bfd_h_put_32 (abfd, header->sizeofcmds, raw.sizeofcmds);
642 bfd_h_put_32 (abfd, header->flags, raw.flags);
643
644 if (mach_o_wide_p (header))
645 bfd_h_put_32 (abfd, header->reserved, raw.reserved);
646
647 if (bfd_seek (abfd, 0, SEEK_SET) != 0
648 || bfd_bwrite (&raw, size, abfd) != size)
649 return FALSE;
650
651 return TRUE;
652 }
653
654 static int
655 bfd_mach_o_write_thread (bfd *abfd, bfd_mach_o_load_command *command)
656 {
657 bfd_mach_o_thread_command *cmd = &command->command.thread;
658 unsigned int i;
659 struct mach_o_thread_command_external raw;
660 unsigned int offset;
661
662 BFD_ASSERT ((command->type == BFD_MACH_O_LC_THREAD)
663 || (command->type == BFD_MACH_O_LC_UNIXTHREAD));
664
665 offset = 8;
666 for (i = 0; i < cmd->nflavours; i++)
667 {
668 BFD_ASSERT ((cmd->flavours[i].size % 4) == 0);
669 BFD_ASSERT (cmd->flavours[i].offset ==
670 (command->offset + offset + BFD_MACH_O_LC_SIZE));
671
672 bfd_h_put_32 (abfd, cmd->flavours[i].flavour, raw.flavour);
673 bfd_h_put_32 (abfd, (cmd->flavours[i].size / 4), raw.count);
674
675 if (bfd_seek (abfd, command->offset + offset, SEEK_SET) != 0
676 || bfd_bwrite (&raw, sizeof (raw), abfd) != sizeof (raw))
677 return -1;
678
679 offset += cmd->flavours[i].size + sizeof (raw);
680 }
681
682 return 0;
683 }
684
685 long
686 bfd_mach_o_get_reloc_upper_bound (bfd *abfd ATTRIBUTE_UNUSED,
687 asection *asect)
688 {
689 return (asect->reloc_count + 1) * sizeof (arelent *);
690 }
691
692 static int
693 bfd_mach_o_canonicalize_one_reloc (bfd *abfd,
694 struct mach_o_reloc_info_external *raw,
695 arelent *res, asymbol **syms)
696 {
697 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
698 bfd_mach_o_backend_data *bed = bfd_mach_o_get_backend_data (abfd);
699 bfd_mach_o_reloc_info reloc;
700 bfd_vma addr;
701 bfd_vma symnum;
702 asymbol **sym;
703
704 addr = bfd_get_32 (abfd, raw->r_address);
705 symnum = bfd_get_32 (abfd, raw->r_symbolnum);
706
707 if (addr & BFD_MACH_O_SR_SCATTERED)
708 {
709 unsigned int j;
710
711 /* Scattered relocation.
712 Extract section and offset from r_value. */
713 res->sym_ptr_ptr = NULL;
714 res->addend = 0;
715 for (j = 0; j < mdata->nsects; j++)
716 {
717 bfd_mach_o_section *sect = mdata->sections[j];
718 if (symnum >= sect->addr && symnum < sect->addr + sect->size)
719 {
720 res->sym_ptr_ptr = sect->bfdsection->symbol_ptr_ptr;
721 res->addend = symnum - sect->addr;
722 break;
723 }
724 }
725 res->address = BFD_MACH_O_GET_SR_ADDRESS (addr);
726 reloc.r_type = BFD_MACH_O_GET_SR_TYPE (addr);
727 reloc.r_length = BFD_MACH_O_GET_SR_LENGTH (addr);
728 reloc.r_pcrel = addr & BFD_MACH_O_SR_PCREL;
729 reloc.r_scattered = 1;
730 }
731 else
732 {
733 unsigned int num = BFD_MACH_O_GET_R_SYMBOLNUM (symnum);
734 res->addend = 0;
735 res->address = addr;
736 if (symnum & BFD_MACH_O_R_EXTERN)
737 {
738 sym = syms + num;
739 reloc.r_extern = 1;
740 }
741 else
742 {
743 BFD_ASSERT (num != 0);
744 BFD_ASSERT (num <= mdata->nsects);
745 sym = mdata->sections[num - 1]->bfdsection->symbol_ptr_ptr;
746 /* For a symbol defined in section S, the addend (stored in the
747 binary) contains the address of the section. To comply with
748 bfd conventio, substract the section address.
749 Use the address from the header, so that the user can modify
750 the vma of the section. */
751 res->addend = -mdata->sections[num - 1]->addr;
752 reloc.r_extern = 0;
753 }
754 res->sym_ptr_ptr = sym;
755 reloc.r_type = BFD_MACH_O_GET_R_TYPE (symnum);
756 reloc.r_length = BFD_MACH_O_GET_R_LENGTH (symnum);
757 reloc.r_pcrel = (symnum & BFD_MACH_O_R_PCREL) ? 1 : 0;
758 reloc.r_scattered = 0;
759 }
760
761 if (!(*bed->_bfd_mach_o_swap_reloc_in)(res, &reloc))
762 return -1;
763 return 0;
764 }
765
766 static int
767 bfd_mach_o_canonicalize_relocs (bfd *abfd, unsigned long filepos,
768 unsigned long count,
769 arelent *res, asymbol **syms)
770 {
771 unsigned long i;
772 struct mach_o_reloc_info_external *native_relocs;
773 bfd_size_type native_size;
774
775 /* Allocate and read relocs. */
776 native_size = count * BFD_MACH_O_RELENT_SIZE;
777 native_relocs =
778 (struct mach_o_reloc_info_external *) bfd_malloc (native_size);
779 if (native_relocs == NULL)
780 return -1;
781
782 if (bfd_seek (abfd, filepos, SEEK_SET) != 0
783 || bfd_bread (native_relocs, native_size, abfd) != native_size)
784 goto err;
785
786 for (i = 0; i < count; i++)
787 {
788 if (bfd_mach_o_canonicalize_one_reloc (abfd, &native_relocs[i],
789 &res[i], syms) < 0)
790 goto err;
791 }
792 free (native_relocs);
793 return i;
794 err:
795 free (native_relocs);
796 return -1;
797 }
798
799 long
800 bfd_mach_o_canonicalize_reloc (bfd *abfd, asection *asect,
801 arelent **rels, asymbol **syms)
802 {
803 bfd_mach_o_backend_data *bed = bfd_mach_o_get_backend_data (abfd);
804 unsigned long i;
805 arelent *res;
806
807 if (asect->reloc_count == 0)
808 return 0;
809
810 /* No need to go further if we don't know how to read relocs. */
811 if (bed->_bfd_mach_o_swap_reloc_in == NULL)
812 return 0;
813
814 res = bfd_malloc (asect->reloc_count * sizeof (arelent));
815 if (res == NULL)
816 return -1;
817
818 if (bfd_mach_o_canonicalize_relocs (abfd, asect->rel_filepos,
819 asect->reloc_count, res, syms) < 0)
820 {
821 free (res);
822 return -1;
823 }
824
825 for (i = 0; i < asect->reloc_count; i++)
826 rels[i] = &res[i];
827 rels[i] = NULL;
828 asect->relocation = res;
829
830 return i;
831 }
832
833 long
834 bfd_mach_o_get_dynamic_reloc_upper_bound (bfd *abfd)
835 {
836 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
837
838 if (mdata->dysymtab == NULL)
839 return 1;
840 return (mdata->dysymtab->nextrel + mdata->dysymtab->nlocrel)
841 * sizeof (arelent *);
842 }
843
844 long
845 bfd_mach_o_canonicalize_dynamic_reloc (bfd *abfd, arelent **rels,
846 struct bfd_symbol **syms)
847 {
848 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
849 bfd_mach_o_dysymtab_command *dysymtab = mdata->dysymtab;
850 bfd_mach_o_backend_data *bed = bfd_mach_o_get_backend_data (abfd);
851 unsigned long i;
852 arelent *res;
853
854 if (dysymtab == NULL)
855 return 0;
856 if (dysymtab->nextrel == 0 && dysymtab->nlocrel == 0)
857 return 0;
858
859 /* No need to go further if we don't know how to read relocs. */
860 if (bed->_bfd_mach_o_swap_reloc_in == NULL)
861 return 0;
862
863 res = bfd_malloc ((dysymtab->nextrel + dysymtab->nlocrel) * sizeof (arelent));
864 if (res == NULL)
865 return -1;
866
867 if (bfd_mach_o_canonicalize_relocs (abfd, dysymtab->extreloff,
868 dysymtab->nextrel, res, syms) < 0)
869 {
870 free (res);
871 return -1;
872 }
873
874 if (bfd_mach_o_canonicalize_relocs (abfd, dysymtab->locreloff,
875 dysymtab->nlocrel,
876 res + dysymtab->nextrel, syms) < 0)
877 {
878 free (res);
879 return -1;
880 }
881
882 for (i = 0; i < dysymtab->nextrel + dysymtab->nlocrel; i++)
883 rels[i] = &res[i];
884 rels[i] = NULL;
885 return i;
886 }
887
888 static bfd_boolean
889 bfd_mach_o_write_relocs (bfd *abfd, bfd_mach_o_section *section)
890 {
891 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
892 unsigned int i;
893 arelent **entries;
894 asection *sec;
895 bfd_mach_o_backend_data *bed = bfd_mach_o_get_backend_data (abfd);
896
897 sec = section->bfdsection;
898 if (sec->reloc_count == 0)
899 return TRUE;
900
901 if (bed->_bfd_mach_o_swap_reloc_out == NULL)
902 return TRUE;
903
904 /* Allocate relocation room. */
905 mdata->filelen = FILE_ALIGN(mdata->filelen, 2);
906 section->nreloc = sec->reloc_count;
907 sec->rel_filepos = mdata->filelen;
908 section->reloff = sec->rel_filepos;
909 mdata->filelen += sec->reloc_count * BFD_MACH_O_RELENT_SIZE;
910
911 if (bfd_seek (abfd, section->reloff, SEEK_SET) != 0)
912 return FALSE;
913
914 /* Convert and write. */
915 entries = section->bfdsection->orelocation;
916 for (i = 0; i < section->nreloc; i++)
917 {
918 arelent *rel = entries[i];
919 struct mach_o_reloc_info_external raw;
920 bfd_mach_o_reloc_info info, *pinfo = &info;
921
922 /* Convert relocation to an intermediate representation. */
923 if (!(*bed->_bfd_mach_o_swap_reloc_out) (rel, pinfo))
924 return FALSE;
925
926 /* Lower the relocation info. */
927 if (pinfo->r_scattered)
928 {
929 unsigned long v;
930
931 v = BFD_MACH_O_SR_SCATTERED
932 | (pinfo->r_pcrel ? BFD_MACH_O_SR_PCREL : 0)
933 | BFD_MACH_O_SET_SR_LENGTH(pinfo->r_length)
934 | BFD_MACH_O_SET_SR_TYPE(pinfo->r_type)
935 | BFD_MACH_O_SET_SR_ADDRESS(pinfo->r_address);
936 /* Note: scattered relocs have field in reverse order... */
937 bfd_put_32 (abfd, v, raw.r_address);
938 bfd_put_32 (abfd, pinfo->r_value, raw.r_symbolnum);
939 }
940 else
941 {
942 unsigned long v;
943
944 bfd_put_32 (abfd, pinfo->r_address, raw.r_address);
945 v = BFD_MACH_O_SET_R_SYMBOLNUM (pinfo->r_value)
946 | (pinfo->r_pcrel ? BFD_MACH_O_R_PCREL : 0)
947 | BFD_MACH_O_SET_R_LENGTH (pinfo->r_length)
948 | (pinfo->r_extern ? BFD_MACH_O_R_EXTERN : 0)
949 | BFD_MACH_O_SET_R_TYPE (pinfo->r_type);
950 bfd_put_32 (abfd, v, raw.r_symbolnum);
951 }
952
953 if (bfd_bwrite (&raw, BFD_MACH_O_RELENT_SIZE, abfd)
954 != BFD_MACH_O_RELENT_SIZE)
955 return FALSE;
956 }
957 return TRUE;
958 }
959
960 static int
961 bfd_mach_o_write_section_32 (bfd *abfd, bfd_mach_o_section *section)
962 {
963 struct mach_o_section_32_external raw;
964
965 memcpy (raw.sectname, section->sectname, 16);
966 memcpy (raw.segname, section->segname, 16);
967 bfd_h_put_32 (abfd, section->addr, raw.addr);
968 bfd_h_put_32 (abfd, section->size, raw.size);
969 bfd_h_put_32 (abfd, section->offset, raw.offset);
970 bfd_h_put_32 (abfd, section->align, raw.align);
971 bfd_h_put_32 (abfd, section->reloff, raw.reloff);
972 bfd_h_put_32 (abfd, section->nreloc, raw.nreloc);
973 bfd_h_put_32 (abfd, section->flags, raw.flags);
974 bfd_h_put_32 (abfd, section->reserved1, raw.reserved1);
975 bfd_h_put_32 (abfd, section->reserved2, raw.reserved2);
976
977 if (bfd_bwrite (&raw, BFD_MACH_O_SECTION_SIZE, abfd)
978 != BFD_MACH_O_SECTION_SIZE)
979 return -1;
980
981 return 0;
982 }
983
984 static int
985 bfd_mach_o_write_section_64 (bfd *abfd, bfd_mach_o_section *section)
986 {
987 struct mach_o_section_64_external raw;
988
989 memcpy (raw.sectname, section->sectname, 16);
990 memcpy (raw.segname, section->segname, 16);
991 bfd_h_put_64 (abfd, section->addr, raw.addr);
992 bfd_h_put_64 (abfd, section->size, raw.size);
993 bfd_h_put_32 (abfd, section->offset, raw.offset);
994 bfd_h_put_32 (abfd, section->align, raw.align);
995 bfd_h_put_32 (abfd, section->reloff, raw.reloff);
996 bfd_h_put_32 (abfd, section->nreloc, raw.nreloc);
997 bfd_h_put_32 (abfd, section->flags, raw.flags);
998 bfd_h_put_32 (abfd, section->reserved1, raw.reserved1);
999 bfd_h_put_32 (abfd, section->reserved2, raw.reserved2);
1000 bfd_h_put_32 (abfd, section->reserved3, raw.reserved3);
1001
1002 if (bfd_bwrite (&raw, BFD_MACH_O_SECTION_64_SIZE, abfd)
1003 != BFD_MACH_O_SECTION_64_SIZE)
1004 return -1;
1005
1006 return 0;
1007 }
1008
1009 static int
1010 bfd_mach_o_write_segment_32 (bfd *abfd, bfd_mach_o_load_command *command)
1011 {
1012 struct mach_o_segment_command_32_external raw;
1013 bfd_mach_o_segment_command *seg = &command->command.segment;
1014 bfd_mach_o_section *sec;
1015
1016 BFD_ASSERT (command->type == BFD_MACH_O_LC_SEGMENT);
1017
1018 for (sec = seg->sect_head; sec != NULL; sec = sec->next)
1019 if (!bfd_mach_o_write_relocs (abfd, sec))
1020 return -1;
1021
1022 memcpy (raw.segname, seg->segname, 16);
1023 bfd_h_put_32 (abfd, seg->vmaddr, raw.vmaddr);
1024 bfd_h_put_32 (abfd, seg->vmsize, raw.vmsize);
1025 bfd_h_put_32 (abfd, seg->fileoff, raw.fileoff);
1026 bfd_h_put_32 (abfd, seg->filesize, raw.filesize);
1027 bfd_h_put_32 (abfd, seg->maxprot, raw.maxprot);
1028 bfd_h_put_32 (abfd, seg->initprot, raw.initprot);
1029 bfd_h_put_32 (abfd, seg->nsects, raw.nsects);
1030 bfd_h_put_32 (abfd, seg->flags, raw.flags);
1031
1032 if (bfd_seek (abfd, command->offset + BFD_MACH_O_LC_SIZE, SEEK_SET) != 0
1033 || bfd_bwrite (&raw, sizeof (raw), abfd) != sizeof (raw))
1034 return -1;
1035
1036 for (sec = seg->sect_head; sec != NULL; sec = sec->next)
1037 if (bfd_mach_o_write_section_32 (abfd, sec))
1038 return -1;
1039
1040 return 0;
1041 }
1042
1043 static int
1044 bfd_mach_o_write_segment_64 (bfd *abfd, bfd_mach_o_load_command *command)
1045 {
1046 struct mach_o_segment_command_64_external raw;
1047 bfd_mach_o_segment_command *seg = &command->command.segment;
1048 bfd_mach_o_section *sec;
1049
1050 BFD_ASSERT (command->type == BFD_MACH_O_LC_SEGMENT_64);
1051
1052 for (sec = seg->sect_head; sec != NULL; sec = sec->next)
1053 if (!bfd_mach_o_write_relocs (abfd, sec))
1054 return -1;
1055
1056 memcpy (raw.segname, seg->segname, 16);
1057 bfd_h_put_64 (abfd, seg->vmaddr, raw.vmaddr);
1058 bfd_h_put_64 (abfd, seg->vmsize, raw.vmsize);
1059 bfd_h_put_64 (abfd, seg->fileoff, raw.fileoff);
1060 bfd_h_put_64 (abfd, seg->filesize, raw.filesize);
1061 bfd_h_put_32 (abfd, seg->maxprot, raw.maxprot);
1062 bfd_h_put_32 (abfd, seg->initprot, raw.initprot);
1063 bfd_h_put_32 (abfd, seg->nsects, raw.nsects);
1064 bfd_h_put_32 (abfd, seg->flags, raw.flags);
1065
1066 if (bfd_seek (abfd, command->offset + BFD_MACH_O_LC_SIZE, SEEK_SET) != 0
1067 || bfd_bwrite (&raw, sizeof (raw), abfd) != sizeof (raw))
1068 return -1;
1069
1070 for (sec = seg->sect_head; sec != NULL; sec = sec->next)
1071 if (bfd_mach_o_write_section_64 (abfd, sec))
1072 return -1;
1073
1074 return 0;
1075 }
1076
1077 static bfd_boolean
1078 bfd_mach_o_write_symtab (bfd *abfd, bfd_mach_o_load_command *command)
1079 {
1080 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
1081 bfd_mach_o_symtab_command *sym = &command->command.symtab;
1082 unsigned long i;
1083 unsigned int wide = bfd_mach_o_wide_p (abfd);
1084 unsigned int symlen = wide ? BFD_MACH_O_NLIST_64_SIZE : BFD_MACH_O_NLIST_SIZE;
1085 struct bfd_strtab_hash *strtab;
1086 asymbol **symbols = bfd_get_outsymbols (abfd);
1087
1088 BFD_ASSERT (command->type == BFD_MACH_O_LC_SYMTAB);
1089
1090 /* Write the symbols first. */
1091 mdata->filelen = FILE_ALIGN(mdata->filelen, wide ? 3 : 2);
1092 sym->symoff = mdata->filelen;
1093 if (bfd_seek (abfd, sym->symoff, SEEK_SET) != 0)
1094 return FALSE;
1095
1096 sym->nsyms = bfd_get_symcount (abfd);
1097 mdata->filelen += sym->nsyms * symlen;
1098
1099 strtab = _bfd_stringtab_init ();
1100 if (strtab == NULL)
1101 return FALSE;
1102
1103 for (i = 0; i < sym->nsyms; i++)
1104 {
1105 bfd_size_type str_index;
1106 bfd_mach_o_asymbol *s = (bfd_mach_o_asymbol *)symbols[i];
1107
1108 /* Compute name index. */
1109 /* An index of 0 always means the empty string. */
1110 if (s->symbol.name == 0 || s->symbol.name[0] == '\0')
1111 str_index = 0;
1112 else
1113 {
1114 str_index = _bfd_stringtab_add (strtab, s->symbol.name, TRUE, FALSE);
1115 if (str_index == (bfd_size_type) -1)
1116 goto err;
1117 }
1118
1119 if (wide)
1120 {
1121 struct mach_o_nlist_64_external raw;
1122
1123 bfd_h_put_32 (abfd, str_index, raw.n_strx);
1124 bfd_h_put_8 (abfd, s->n_type, raw.n_type);
1125 bfd_h_put_8 (abfd, s->n_sect, raw.n_sect);
1126 bfd_h_put_16 (abfd, s->n_desc, raw.n_desc);
1127 bfd_h_put_64 (abfd, s->symbol.section->vma + s->symbol.value,
1128 raw.n_value);
1129
1130 if (bfd_bwrite (&raw, sizeof (raw), abfd) != sizeof (raw))
1131 goto err;
1132 }
1133 else
1134 {
1135 struct mach_o_nlist_external raw;
1136
1137 bfd_h_put_32 (abfd, str_index, raw.n_strx);
1138 bfd_h_put_8 (abfd, s->n_type, raw.n_type);
1139 bfd_h_put_8 (abfd, s->n_sect, raw.n_sect);
1140 bfd_h_put_16 (abfd, s->n_desc, raw.n_desc);
1141 bfd_h_put_32 (abfd, s->symbol.section->vma + s->symbol.value,
1142 raw.n_value);
1143
1144 if (bfd_bwrite (&raw, sizeof (raw), abfd) != sizeof (raw))
1145 goto err;
1146 }
1147 }
1148 sym->strsize = _bfd_stringtab_size (strtab);
1149 sym->stroff = mdata->filelen;
1150 mdata->filelen += sym->strsize;
1151
1152 if (_bfd_stringtab_emit (abfd, strtab) != TRUE)
1153 goto err;
1154 _bfd_stringtab_free (strtab);
1155
1156 /* The command. */
1157 {
1158 struct mach_o_symtab_command_external raw;
1159
1160 bfd_h_put_32 (abfd, sym->symoff, raw.symoff);
1161 bfd_h_put_32 (abfd, sym->nsyms, raw.nsyms);
1162 bfd_h_put_32 (abfd, sym->stroff, raw.stroff);
1163 bfd_h_put_32 (abfd, sym->strsize, raw.strsize);
1164
1165 if (bfd_seek (abfd, command->offset + BFD_MACH_O_LC_SIZE, SEEK_SET) != 0
1166 || bfd_bwrite (&raw, sizeof (raw), abfd) != sizeof (raw))
1167 return FALSE;
1168 }
1169
1170 return TRUE;
1171
1172 err:
1173 _bfd_stringtab_free (strtab);
1174 return FALSE;
1175 }
1176
1177 /* Process the symbols and generate Mach-O specific fields.
1178 Number them. */
1179
1180 static bfd_boolean
1181 bfd_mach_o_mangle_symbols (bfd *abfd)
1182 {
1183 unsigned long i;
1184 asymbol **symbols = bfd_get_outsymbols (abfd);
1185
1186 for (i = 0; i < bfd_get_symcount (abfd); i++)
1187 {
1188 bfd_mach_o_asymbol *s = (bfd_mach_o_asymbol *)symbols[i];
1189
1190 if (s->n_type == BFD_MACH_O_N_UNDF && !(s->symbol.flags & BSF_DEBUGGING))
1191 {
1192 /* As genuine Mach-O symbols type shouldn't be N_UNDF (undefined
1193 symbols should be N_UNDEF | N_EXT), we suppose the back-end
1194 values haven't been set. */
1195 if (s->symbol.section == bfd_abs_section_ptr)
1196 s->n_type = BFD_MACH_O_N_ABS;
1197 else if (s->symbol.section == bfd_und_section_ptr)
1198 {
1199 s->n_type = BFD_MACH_O_N_UNDF;
1200 if (s->symbol.flags & BSF_WEAK)
1201 s->n_desc |= BFD_MACH_O_N_WEAK_REF;
1202 }
1203 else if (s->symbol.section == bfd_com_section_ptr)
1204 s->n_type = BFD_MACH_O_N_UNDF | BFD_MACH_O_N_EXT;
1205 else
1206 s->n_type = BFD_MACH_O_N_SECT;
1207
1208 if (s->symbol.flags & BSF_GLOBAL)
1209 s->n_type |= BFD_MACH_O_N_EXT;
1210 }
1211
1212 /* Compute section index. */
1213 if (s->symbol.section != bfd_abs_section_ptr
1214 && s->symbol.section != bfd_und_section_ptr
1215 && s->symbol.section != bfd_com_section_ptr)
1216 s->n_sect = s->symbol.section->target_index;
1217
1218 /* Number symbols. */
1219 s->symbol.udata.i = i;
1220 }
1221 return TRUE;
1222 }
1223
1224 bfd_boolean
1225 bfd_mach_o_write_contents (bfd *abfd)
1226 {
1227 unsigned int i;
1228 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
1229
1230 if (mdata->header.ncmds == 0)
1231 if (!bfd_mach_o_build_commands (abfd))
1232 return FALSE;
1233
1234 /* Now write header information. */
1235 if (mdata->header.filetype == 0)
1236 {
1237 if (abfd->flags & EXEC_P)
1238 mdata->header.filetype = BFD_MACH_O_MH_EXECUTE;
1239 else if (abfd->flags & DYNAMIC)
1240 mdata->header.filetype = BFD_MACH_O_MH_DYLIB;
1241 else
1242 mdata->header.filetype = BFD_MACH_O_MH_OBJECT;
1243 }
1244 if (!bfd_mach_o_write_header (abfd, &mdata->header))
1245 return FALSE;
1246
1247 /* Assign a number to each symbols. */
1248 if (!bfd_mach_o_mangle_symbols (abfd))
1249 return FALSE;
1250
1251 for (i = 0; i < mdata->header.ncmds; i++)
1252 {
1253 struct mach_o_load_command_external raw;
1254 bfd_mach_o_load_command *cur = &mdata->commands[i];
1255 unsigned long typeflag;
1256
1257 typeflag = cur->type | (cur->type_required ? BFD_MACH_O_LC_REQ_DYLD : 0);
1258
1259 bfd_h_put_32 (abfd, typeflag, raw.cmd);
1260 bfd_h_put_32 (abfd, cur->len, raw.cmdsize);
1261
1262 if (bfd_seek (abfd, cur->offset, SEEK_SET) != 0
1263 || bfd_bwrite (&raw, BFD_MACH_O_LC_SIZE, abfd) != 8)
1264 return FALSE;
1265
1266 switch (cur->type)
1267 {
1268 case BFD_MACH_O_LC_SEGMENT:
1269 if (bfd_mach_o_write_segment_32 (abfd, cur) != 0)
1270 return FALSE;
1271 break;
1272 case BFD_MACH_O_LC_SEGMENT_64:
1273 if (bfd_mach_o_write_segment_64 (abfd, cur) != 0)
1274 return FALSE;
1275 break;
1276 case BFD_MACH_O_LC_SYMTAB:
1277 if (!bfd_mach_o_write_symtab (abfd, cur))
1278 return FALSE;
1279 break;
1280 case BFD_MACH_O_LC_SYMSEG:
1281 break;
1282 case BFD_MACH_O_LC_THREAD:
1283 case BFD_MACH_O_LC_UNIXTHREAD:
1284 if (bfd_mach_o_write_thread (abfd, cur) != 0)
1285 return FALSE;
1286 break;
1287 case BFD_MACH_O_LC_LOADFVMLIB:
1288 case BFD_MACH_O_LC_IDFVMLIB:
1289 case BFD_MACH_O_LC_IDENT:
1290 case BFD_MACH_O_LC_FVMFILE:
1291 case BFD_MACH_O_LC_PREPAGE:
1292 case BFD_MACH_O_LC_DYSYMTAB:
1293 case BFD_MACH_O_LC_LOAD_DYLIB:
1294 case BFD_MACH_O_LC_LOAD_WEAK_DYLIB:
1295 case BFD_MACH_O_LC_ID_DYLIB:
1296 case BFD_MACH_O_LC_REEXPORT_DYLIB:
1297 case BFD_MACH_O_LC_LOAD_UPWARD_DYLIB:
1298 case BFD_MACH_O_LC_LOAD_DYLINKER:
1299 case BFD_MACH_O_LC_ID_DYLINKER:
1300 case BFD_MACH_O_LC_PREBOUND_DYLIB:
1301 case BFD_MACH_O_LC_ROUTINES:
1302 case BFD_MACH_O_LC_SUB_FRAMEWORK:
1303 break;
1304 default:
1305 (*_bfd_error_handler) (_("unable to write unknown load command 0x%lx"),
1306 (unsigned long) cur->type);
1307 return FALSE;
1308 }
1309 }
1310
1311 return TRUE;
1312 }
1313
1314 static void
1315 bfd_mach_o_append_section_to_segment (bfd_mach_o_segment_command *seg,
1316 asection *sec)
1317 {
1318 bfd_mach_o_section *s = (bfd_mach_o_section *)sec->used_by_bfd;
1319 if (seg->sect_head == NULL)
1320 seg->sect_head = s;
1321 else
1322 seg->sect_tail->next = s;
1323 seg->sect_tail = s;
1324 }
1325
1326 /* Create section Mach-O flags from BFD flags. */
1327
1328 static void
1329 bfd_mach_o_set_section_flags_from_bfd (bfd *abfd ATTRIBUTE_UNUSED, asection *sec)
1330 {
1331 flagword bfd_flags;
1332 bfd_mach_o_section *s = bfd_mach_o_get_mach_o_section (sec);
1333
1334 /* Create default flags. */
1335 bfd_flags = bfd_get_section_flags (abfd, sec);
1336 if ((bfd_flags & SEC_CODE) == SEC_CODE)
1337 s->flags = BFD_MACH_O_S_ATTR_PURE_INSTRUCTIONS
1338 | BFD_MACH_O_S_ATTR_SOME_INSTRUCTIONS
1339 | BFD_MACH_O_S_REGULAR;
1340 else if ((bfd_flags & (SEC_ALLOC | SEC_LOAD)) == SEC_ALLOC)
1341 s->flags = BFD_MACH_O_S_ZEROFILL;
1342 else if (bfd_flags & SEC_DEBUGGING)
1343 s->flags = BFD_MACH_O_S_REGULAR | BFD_MACH_O_S_ATTR_DEBUG;
1344 else
1345 s->flags = BFD_MACH_O_S_REGULAR;
1346 }
1347
1348 /* Build Mach-O load commands from the sections. */
1349
1350 bfd_boolean
1351 bfd_mach_o_build_commands (bfd *abfd)
1352 {
1353 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
1354 unsigned int wide = mach_o_wide_p (&mdata->header);
1355 bfd_mach_o_segment_command *seg;
1356 asection *sec;
1357 bfd_mach_o_load_command *cmd;
1358 bfd_mach_o_load_command *symtab_cmd;
1359 int target_index;
1360
1361 /* Return now if commands are already built. */
1362 if (mdata->header.ncmds)
1363 return FALSE;
1364
1365 /* Very simple version: a command (segment) to contain all the sections and
1366 a command for the symbol table. */
1367 mdata->header.ncmds = 2;
1368 mdata->commands = bfd_alloc (abfd, mdata->header.ncmds
1369 * sizeof (bfd_mach_o_load_command));
1370 if (mdata->commands == NULL)
1371 return FALSE;
1372 cmd = &mdata->commands[0];
1373 seg = &cmd->command.segment;
1374
1375 seg->nsects = bfd_count_sections (abfd);
1376
1377 /* Set segment command. */
1378 if (wide)
1379 {
1380 cmd->type = BFD_MACH_O_LC_SEGMENT_64;
1381 cmd->offset = BFD_MACH_O_HEADER_64_SIZE;
1382 cmd->len = BFD_MACH_O_LC_SEGMENT_64_SIZE
1383 + BFD_MACH_O_SECTION_64_SIZE * seg->nsects;
1384 }
1385 else
1386 {
1387 cmd->type = BFD_MACH_O_LC_SEGMENT;
1388 cmd->offset = BFD_MACH_O_HEADER_SIZE;
1389 cmd->len = BFD_MACH_O_LC_SEGMENT_SIZE
1390 + BFD_MACH_O_SECTION_SIZE * seg->nsects;
1391 }
1392 cmd->type_required = FALSE;
1393 mdata->header.sizeofcmds = cmd->len;
1394 mdata->filelen = cmd->offset + cmd->len;
1395
1396 /* Set symtab command. */
1397 symtab_cmd = &mdata->commands[1];
1398
1399 symtab_cmd->type = BFD_MACH_O_LC_SYMTAB;
1400 symtab_cmd->offset = cmd->offset + cmd->len;
1401 symtab_cmd->len = 6 * 4;
1402 symtab_cmd->type_required = FALSE;
1403
1404 mdata->header.sizeofcmds += symtab_cmd->len;
1405 mdata->filelen += symtab_cmd->len;
1406
1407 /* Fill segment command. */
1408 memset (seg->segname, 0, sizeof (seg->segname));
1409 seg->vmaddr = 0;
1410 seg->fileoff = mdata->filelen;
1411 seg->filesize = 0;
1412 seg->maxprot = BFD_MACH_O_PROT_READ | BFD_MACH_O_PROT_WRITE
1413 | BFD_MACH_O_PROT_EXECUTE;
1414 seg->initprot = seg->maxprot;
1415 seg->flags = 0;
1416 seg->sect_head = NULL;
1417 seg->sect_tail = NULL;
1418
1419 /* Create Mach-O sections. */
1420 target_index = 0;
1421 for (sec = abfd->sections; sec; sec = sec->next)
1422 {
1423 bfd_mach_o_section *msect = bfd_mach_o_get_mach_o_section (sec);
1424
1425 bfd_mach_o_append_section_to_segment (seg, sec);
1426
1427 if (msect->flags == 0)
1428 {
1429 /* We suppose it hasn't been set. Convert from BFD flags. */
1430 bfd_mach_o_set_section_flags_from_bfd (abfd, sec);
1431 }
1432 msect->addr = bfd_get_section_vma (abfd, sec);
1433 msect->size = bfd_get_section_size (sec);
1434 msect->align = bfd_get_section_alignment (abfd, sec);
1435
1436 if (msect->size != 0)
1437 {
1438 mdata->filelen = FILE_ALIGN (mdata->filelen, msect->align);
1439 msect->offset = mdata->filelen;
1440 }
1441 else
1442 msect->offset = 0;
1443
1444 sec->filepos = msect->offset;
1445 sec->target_index = ++target_index;
1446
1447 mdata->filelen += msect->size;
1448 }
1449 seg->filesize = mdata->filelen - seg->fileoff;
1450 seg->vmsize = seg->filesize;
1451
1452 return TRUE;
1453 }
1454
1455 /* Set the contents of a section. */
1456
1457 bfd_boolean
1458 bfd_mach_o_set_section_contents (bfd *abfd,
1459 asection *section,
1460 const void * location,
1461 file_ptr offset,
1462 bfd_size_type count)
1463 {
1464 file_ptr pos;
1465
1466 /* This must be done first, because bfd_set_section_contents is
1467 going to set output_has_begun to TRUE. */
1468 if (! abfd->output_has_begun && ! bfd_mach_o_build_commands (abfd))
1469 return FALSE;
1470
1471 if (count == 0)
1472 return TRUE;
1473
1474 pos = section->filepos + offset;
1475 if (bfd_seek (abfd, pos, SEEK_SET) != 0
1476 || bfd_bwrite (location, count, abfd) != count)
1477 return FALSE;
1478
1479 return TRUE;
1480 }
1481
1482 int
1483 bfd_mach_o_sizeof_headers (bfd *a ATTRIBUTE_UNUSED,
1484 struct bfd_link_info *info ATTRIBUTE_UNUSED)
1485 {
1486 return 0;
1487 }
1488
1489 /* Make an empty symbol. This is required only because
1490 bfd_make_section_anyway wants to create a symbol for the section. */
1491
1492 asymbol *
1493 bfd_mach_o_make_empty_symbol (bfd *abfd)
1494 {
1495 asymbol *new_symbol;
1496
1497 new_symbol = bfd_zalloc (abfd, sizeof (bfd_mach_o_asymbol));
1498 if (new_symbol == NULL)
1499 return new_symbol;
1500 new_symbol->the_bfd = abfd;
1501 new_symbol->udata.i = 0;
1502 return new_symbol;
1503 }
1504
1505 static bfd_boolean
1506 bfd_mach_o_read_header (bfd *abfd, bfd_mach_o_header *header)
1507 {
1508 struct mach_o_header_external raw;
1509 unsigned int size;
1510 bfd_vma (*get32) (const void *) = NULL;
1511
1512 /* Just read the magic number. */
1513 if (bfd_seek (abfd, 0, SEEK_SET) != 0
1514 || bfd_bread (raw.magic, sizeof (raw.magic), abfd) != 4)
1515 return FALSE;
1516
1517 if (bfd_getb32 (raw.magic) == BFD_MACH_O_MH_MAGIC)
1518 {
1519 header->byteorder = BFD_ENDIAN_BIG;
1520 header->magic = BFD_MACH_O_MH_MAGIC;
1521 header->version = 1;
1522 get32 = bfd_getb32;
1523 }
1524 else if (bfd_getl32 (raw.magic) == BFD_MACH_O_MH_MAGIC)
1525 {
1526 header->byteorder = BFD_ENDIAN_LITTLE;
1527 header->magic = BFD_MACH_O_MH_MAGIC;
1528 header->version = 1;
1529 get32 = bfd_getl32;
1530 }
1531 else if (bfd_getb32 (raw.magic) == BFD_MACH_O_MH_MAGIC_64)
1532 {
1533 header->byteorder = BFD_ENDIAN_BIG;
1534 header->magic = BFD_MACH_O_MH_MAGIC_64;
1535 header->version = 2;
1536 get32 = bfd_getb32;
1537 }
1538 else if (bfd_getl32 (raw.magic) == BFD_MACH_O_MH_MAGIC_64)
1539 {
1540 header->byteorder = BFD_ENDIAN_LITTLE;
1541 header->magic = BFD_MACH_O_MH_MAGIC_64;
1542 header->version = 2;
1543 get32 = bfd_getl32;
1544 }
1545 else
1546 {
1547 header->byteorder = BFD_ENDIAN_UNKNOWN;
1548 return FALSE;
1549 }
1550
1551 /* Once the size of the header is known, read the full header. */
1552 size = mach_o_wide_p (header) ?
1553 BFD_MACH_O_HEADER_64_SIZE : BFD_MACH_O_HEADER_SIZE;
1554
1555 if (bfd_seek (abfd, 0, SEEK_SET) != 0
1556 || bfd_bread (&raw, size, abfd) != size)
1557 return FALSE;
1558
1559 header->cputype = (*get32) (raw.cputype);
1560 header->cpusubtype = (*get32) (raw.cpusubtype);
1561 header->filetype = (*get32) (raw.filetype);
1562 header->ncmds = (*get32) (raw.ncmds);
1563 header->sizeofcmds = (*get32) (raw.sizeofcmds);
1564 header->flags = (*get32) (raw.flags);
1565
1566 if (mach_o_wide_p (header))
1567 header->reserved = (*get32) (raw.reserved);
1568
1569 return TRUE;
1570 }
1571
1572 bfd_boolean
1573 bfd_mach_o_new_section_hook (bfd *abfd, asection *sec)
1574 {
1575 bfd_mach_o_section *s;
1576
1577 s = bfd_mach_o_get_mach_o_section (sec);
1578 if (s == NULL)
1579 {
1580 flagword bfd_flags;
1581
1582 s = (bfd_mach_o_section *) bfd_zalloc (abfd, sizeof (*s));
1583 if (s == NULL)
1584 return FALSE;
1585 sec->used_by_bfd = s;
1586 s->bfdsection = sec;
1587
1588 /* Create default name. */
1589 bfd_mach_o_convert_section_name_to_mach_o (abfd, sec, s);
1590
1591 /* Create default flags. */
1592 bfd_flags = bfd_get_section_flags (abfd, sec);
1593 if ((bfd_flags & SEC_CODE) == SEC_CODE)
1594 s->flags = BFD_MACH_O_S_ATTR_PURE_INSTRUCTIONS
1595 | BFD_MACH_O_S_ATTR_SOME_INSTRUCTIONS
1596 | BFD_MACH_O_S_REGULAR;
1597 else if ((bfd_flags & (SEC_ALLOC | SEC_LOAD)) == SEC_ALLOC)
1598 s->flags = BFD_MACH_O_S_ZEROFILL;
1599 else if (bfd_flags & SEC_DEBUGGING)
1600 s->flags = BFD_MACH_O_S_REGULAR | BFD_MACH_O_S_ATTR_DEBUG;
1601 else
1602 s->flags = BFD_MACH_O_S_REGULAR;
1603 }
1604
1605 return _bfd_generic_new_section_hook (abfd, sec);
1606 }
1607
1608 static void
1609 bfd_mach_o_init_section_from_mach_o (bfd *abfd, asection *sec,
1610 unsigned long prot)
1611 {
1612 flagword flags;
1613 bfd_mach_o_section *section;
1614
1615 flags = bfd_get_section_flags (abfd, sec);
1616 section = bfd_mach_o_get_mach_o_section (sec);
1617
1618 if (flags == SEC_NO_FLAGS)
1619 {
1620 /* Try to guess flags. */
1621 if (section->flags & BFD_MACH_O_S_ATTR_DEBUG)
1622 flags = SEC_DEBUGGING;
1623 else
1624 {
1625 flags = SEC_ALLOC;
1626 if ((section->flags & BFD_MACH_O_SECTION_TYPE_MASK)
1627 != BFD_MACH_O_S_ZEROFILL)
1628 {
1629 flags |= SEC_LOAD;
1630 if (prot & BFD_MACH_O_PROT_EXECUTE)
1631 flags |= SEC_CODE;
1632 if (prot & BFD_MACH_O_PROT_WRITE)
1633 flags |= SEC_DATA;
1634 else if (prot & BFD_MACH_O_PROT_READ)
1635 flags |= SEC_READONLY;
1636 }
1637 }
1638 }
1639 else
1640 {
1641 if ((flags & SEC_DEBUGGING) == 0)
1642 flags |= SEC_ALLOC;
1643 }
1644
1645 if (section->offset != 0)
1646 flags |= SEC_HAS_CONTENTS;
1647 if (section->nreloc != 0)
1648 flags |= SEC_RELOC;
1649
1650 bfd_set_section_flags (abfd, sec, flags);
1651
1652 sec->vma = section->addr;
1653 sec->lma = section->addr;
1654 sec->size = section->size;
1655 sec->filepos = section->offset;
1656 sec->alignment_power = section->align;
1657 sec->segment_mark = 0;
1658 sec->reloc_count = section->nreloc;
1659 sec->rel_filepos = section->reloff;
1660 }
1661
1662 static asection *
1663 bfd_mach_o_make_bfd_section (bfd *abfd,
1664 const unsigned char *segname,
1665 const unsigned char *sectname)
1666 {
1667 const char *sname;
1668 flagword flags;
1669
1670 bfd_mach_o_convert_section_name_to_bfd
1671 (abfd, (const char *)segname, (const char *)sectname, &sname, &flags);
1672 if (sname == NULL)
1673 return NULL;
1674
1675 return bfd_make_section_anyway_with_flags (abfd, sname, flags);
1676 }
1677
1678 static asection *
1679 bfd_mach_o_read_section_32 (bfd *abfd,
1680 unsigned int offset,
1681 unsigned long prot)
1682 {
1683 struct mach_o_section_32_external raw;
1684 asection *sec;
1685 bfd_mach_o_section *section;
1686
1687 if (bfd_seek (abfd, offset, SEEK_SET) != 0
1688 || (bfd_bread (&raw, BFD_MACH_O_SECTION_SIZE, abfd)
1689 != BFD_MACH_O_SECTION_SIZE))
1690 return NULL;
1691
1692 sec = bfd_mach_o_make_bfd_section (abfd, raw.segname, raw.sectname);
1693 if (sec == NULL)
1694 return NULL;
1695
1696 section = bfd_mach_o_get_mach_o_section (sec);
1697 memcpy (section->segname, raw.segname, sizeof (raw.segname));
1698 section->segname[BFD_MACH_O_SEGNAME_SIZE] = 0;
1699 memcpy (section->sectname, raw.sectname, sizeof (raw.sectname));
1700 section->segname[BFD_MACH_O_SECTNAME_SIZE] = 0;
1701 section->addr = bfd_h_get_32 (abfd, raw.addr);
1702 section->size = bfd_h_get_32 (abfd, raw.size);
1703 section->offset = bfd_h_get_32 (abfd, raw.offset);
1704 section->align = bfd_h_get_32 (abfd, raw.align);
1705 section->reloff = bfd_h_get_32 (abfd, raw.reloff);
1706 section->nreloc = bfd_h_get_32 (abfd, raw.nreloc);
1707 section->flags = bfd_h_get_32 (abfd, raw.flags);
1708 section->reserved1 = bfd_h_get_32 (abfd, raw.reserved1);
1709 section->reserved2 = bfd_h_get_32 (abfd, raw.reserved2);
1710 section->reserved3 = 0;
1711
1712 bfd_mach_o_init_section_from_mach_o (abfd, sec, prot);
1713
1714 return sec;
1715 }
1716
1717 static asection *
1718 bfd_mach_o_read_section_64 (bfd *abfd,
1719 unsigned int offset,
1720 unsigned long prot)
1721 {
1722 struct mach_o_section_64_external raw;
1723 asection *sec;
1724 bfd_mach_o_section *section;
1725
1726 if (bfd_seek (abfd, offset, SEEK_SET) != 0
1727 || (bfd_bread (&raw, BFD_MACH_O_SECTION_64_SIZE, abfd)
1728 != BFD_MACH_O_SECTION_64_SIZE))
1729 return NULL;
1730
1731 sec = bfd_mach_o_make_bfd_section (abfd, raw.segname, raw.sectname);
1732 if (sec == NULL)
1733 return NULL;
1734
1735 section = bfd_mach_o_get_mach_o_section (sec);
1736 memcpy (section->segname, raw.segname, sizeof (raw.segname));
1737 section->segname[BFD_MACH_O_SEGNAME_SIZE] = 0;
1738 memcpy (section->sectname, raw.sectname, sizeof (raw.sectname));
1739 section->segname[BFD_MACH_O_SECTNAME_SIZE] = 0;
1740 section->addr = bfd_h_get_64 (abfd, raw.addr);
1741 section->size = bfd_h_get_64 (abfd, raw.size);
1742 section->offset = bfd_h_get_32 (abfd, raw.offset);
1743 section->align = bfd_h_get_32 (abfd, raw.align);
1744 section->reloff = bfd_h_get_32 (abfd, raw.reloff);
1745 section->nreloc = bfd_h_get_32 (abfd, raw.nreloc);
1746 section->flags = bfd_h_get_32 (abfd, raw.flags);
1747 section->reserved1 = bfd_h_get_32 (abfd, raw.reserved1);
1748 section->reserved2 = bfd_h_get_32 (abfd, raw.reserved2);
1749 section->reserved3 = bfd_h_get_32 (abfd, raw.reserved3);
1750
1751 bfd_mach_o_init_section_from_mach_o (abfd, sec, prot);
1752
1753 return sec;
1754 }
1755
1756 static asection *
1757 bfd_mach_o_read_section (bfd *abfd,
1758 unsigned int offset,
1759 unsigned long prot,
1760 unsigned int wide)
1761 {
1762 if (wide)
1763 return bfd_mach_o_read_section_64 (abfd, offset, prot);
1764 else
1765 return bfd_mach_o_read_section_32 (abfd, offset, prot);
1766 }
1767
1768 static int
1769 bfd_mach_o_read_symtab_symbol (bfd *abfd,
1770 bfd_mach_o_symtab_command *sym,
1771 bfd_mach_o_asymbol *s,
1772 unsigned long i)
1773 {
1774 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
1775 unsigned int wide = mach_o_wide_p (&mdata->header);
1776 unsigned int symwidth =
1777 wide ? BFD_MACH_O_NLIST_64_SIZE : BFD_MACH_O_NLIST_SIZE;
1778 unsigned int symoff = sym->symoff + (i * symwidth);
1779 struct mach_o_nlist_64_external raw;
1780 unsigned char type = -1;
1781 unsigned char section = -1;
1782 short desc = -1;
1783 symvalue value = -1;
1784 unsigned long stroff = -1;
1785 unsigned int symtype = -1;
1786
1787 BFD_ASSERT (sym->strtab != NULL);
1788
1789 if (bfd_seek (abfd, symoff, SEEK_SET) != 0
1790 || bfd_bread (&raw, symwidth, abfd) != symwidth)
1791 {
1792 (*_bfd_error_handler)
1793 (_("bfd_mach_o_read_symtab_symbol: unable to read %d bytes at %lu"),
1794 symwidth, (unsigned long) symoff);
1795 return -1;
1796 }
1797
1798 stroff = bfd_h_get_32 (abfd, raw.n_strx);
1799 type = bfd_h_get_8 (abfd, raw.n_type);
1800 symtype = type & BFD_MACH_O_N_TYPE;
1801 section = bfd_h_get_8 (abfd, raw.n_sect);
1802 desc = bfd_h_get_16 (abfd, raw.n_desc);
1803 if (wide)
1804 value = bfd_h_get_64 (abfd, raw.n_value);
1805 else
1806 value = bfd_h_get_32 (abfd, raw.n_value);
1807
1808 if (stroff >= sym->strsize)
1809 {
1810 (*_bfd_error_handler)
1811 (_("bfd_mach_o_read_symtab_symbol: name out of range (%lu >= %lu)"),
1812 (unsigned long) stroff,
1813 (unsigned long) sym->strsize);
1814 return -1;
1815 }
1816
1817 s->symbol.the_bfd = abfd;
1818 s->symbol.name = sym->strtab + stroff;
1819 s->symbol.value = value;
1820 s->symbol.flags = 0x0;
1821 s->symbol.udata.i = 0;
1822 s->n_type = type;
1823 s->n_sect = section;
1824 s->n_desc = desc;
1825
1826 if (type & BFD_MACH_O_N_STAB)
1827 {
1828 s->symbol.flags |= BSF_DEBUGGING;
1829 s->symbol.section = bfd_und_section_ptr;
1830 switch (type)
1831 {
1832 case N_FUN:
1833 case N_STSYM:
1834 case N_LCSYM:
1835 case N_BNSYM:
1836 case N_SLINE:
1837 case N_ENSYM:
1838 case N_ECOMM:
1839 case N_ECOML:
1840 case N_GSYM:
1841 if ((section > 0) && (section <= mdata->nsects))
1842 {
1843 s->symbol.section = mdata->sections[section - 1]->bfdsection;
1844 s->symbol.value =
1845 s->symbol.value - mdata->sections[section - 1]->addr;
1846 }
1847 break;
1848 }
1849 }
1850 else
1851 {
1852 if (type & BFD_MACH_O_N_PEXT)
1853 s->symbol.flags |= BSF_GLOBAL;
1854
1855 if (type & BFD_MACH_O_N_EXT)
1856 s->symbol.flags |= BSF_GLOBAL;
1857
1858 if (!(type & (BFD_MACH_O_N_PEXT | BFD_MACH_O_N_EXT)))
1859 s->symbol.flags |= BSF_LOCAL;
1860
1861 switch (symtype)
1862 {
1863 case BFD_MACH_O_N_UNDF:
1864 if (type == (BFD_MACH_O_N_UNDF | BFD_MACH_O_N_EXT)
1865 && s->symbol.value != 0)
1866 {
1867 /* A common symbol. */
1868 s->symbol.section = bfd_com_section_ptr;
1869 s->symbol.flags = BSF_NO_FLAGS;
1870 }
1871 else
1872 {
1873 s->symbol.section = bfd_und_section_ptr;
1874 if (s->n_desc & BFD_MACH_O_N_WEAK_REF)
1875 s->symbol.flags |= BSF_WEAK;
1876 }
1877 break;
1878 case BFD_MACH_O_N_PBUD:
1879 s->symbol.section = bfd_und_section_ptr;
1880 break;
1881 case BFD_MACH_O_N_ABS:
1882 s->symbol.section = bfd_abs_section_ptr;
1883 break;
1884 case BFD_MACH_O_N_SECT:
1885 if ((section > 0) && (section <= mdata->nsects))
1886 {
1887 s->symbol.section = mdata->sections[section - 1]->bfdsection;
1888 s->symbol.value =
1889 s->symbol.value - mdata->sections[section - 1]->addr;
1890 }
1891 else
1892 {
1893 /* Mach-O uses 0 to mean "no section"; not an error. */
1894 if (section != 0)
1895 {
1896 (*_bfd_error_handler) (_("bfd_mach_o_read_symtab_symbol: "
1897 "symbol \"%s\" specified invalid section %d (max %lu): setting to undefined"),
1898 s->symbol.name, section, mdata->nsects);
1899 }
1900 s->symbol.section = bfd_und_section_ptr;
1901 }
1902 break;
1903 case BFD_MACH_O_N_INDR:
1904 /* FIXME: we don't follow the BFD convention as this indirect symbol
1905 won't be followed by the referenced one. This looks harmless
1906 unless we start using the linker. */
1907 s->symbol.flags |= BSF_INDIRECT;
1908 s->symbol.section = bfd_ind_section_ptr;
1909 s->symbol.value = 0;
1910 break;
1911 default:
1912 (*_bfd_error_handler) (_("bfd_mach_o_read_symtab_symbol: "
1913 "symbol \"%s\" specified invalid type field 0x%x: setting to undefined"),
1914 s->symbol.name, symtype);
1915 s->symbol.section = bfd_und_section_ptr;
1916 break;
1917 }
1918 }
1919
1920 return 0;
1921 }
1922
1923 static int
1924 bfd_mach_o_read_symtab_strtab (bfd *abfd)
1925 {
1926 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
1927 bfd_mach_o_symtab_command *sym = mdata->symtab;
1928
1929 /* Fail if there is no symtab. */
1930 if (sym == NULL)
1931 return -1;
1932
1933 /* Success if already loaded. */
1934 if (sym->strtab)
1935 return 0;
1936
1937 if (abfd->flags & BFD_IN_MEMORY)
1938 {
1939 struct bfd_in_memory *b;
1940
1941 b = (struct bfd_in_memory *) abfd->iostream;
1942
1943 if ((sym->stroff + sym->strsize) > b->size)
1944 {
1945 bfd_set_error (bfd_error_file_truncated);
1946 return -1;
1947 }
1948 sym->strtab = (char *) b->buffer + sym->stroff;
1949 }
1950 else
1951 {
1952 sym->strtab = bfd_alloc (abfd, sym->strsize);
1953 if (sym->strtab == NULL)
1954 return -1;
1955
1956 if (bfd_seek (abfd, sym->stroff, SEEK_SET) != 0
1957 || bfd_bread ((void *) sym->strtab, sym->strsize, abfd) != sym->strsize)
1958 {
1959 bfd_set_error (bfd_error_file_truncated);
1960 return -1;
1961 }
1962 }
1963
1964 return 0;
1965 }
1966
1967 static int
1968 bfd_mach_o_read_symtab_symbols (bfd *abfd)
1969 {
1970 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
1971 bfd_mach_o_symtab_command *sym = mdata->symtab;
1972 unsigned long i;
1973 int ret;
1974
1975 if (sym == NULL || sym->symbols)
1976 {
1977 /* Return now if there are no symbols or if already loaded. */
1978 return 0;
1979 }
1980
1981 sym->symbols = bfd_alloc (abfd, sym->nsyms * sizeof (bfd_mach_o_asymbol));
1982
1983 if (sym->symbols == NULL)
1984 {
1985 (*_bfd_error_handler) (_("bfd_mach_o_read_symtab_symbols: unable to allocate memory for symbols"));
1986 return -1;
1987 }
1988
1989 ret = bfd_mach_o_read_symtab_strtab (abfd);
1990 if (ret != 0)
1991 return ret;
1992
1993 for (i = 0; i < sym->nsyms; i++)
1994 {
1995 ret = bfd_mach_o_read_symtab_symbol (abfd, sym, &sym->symbols[i], i);
1996 if (ret != 0)
1997 return ret;
1998 }
1999
2000 return 0;
2001 }
2002
2003 int
2004 bfd_mach_o_read_dysymtab_symbol (bfd *abfd,
2005 bfd_mach_o_dysymtab_command *dysym,
2006 bfd_mach_o_symtab_command *sym,
2007 bfd_mach_o_asymbol *s,
2008 unsigned long i)
2009 {
2010 unsigned long isymoff = dysym->indirectsymoff + (i * 4);
2011 unsigned long sym_index;
2012 unsigned char raw[4];
2013
2014 BFD_ASSERT (i < dysym->nindirectsyms);
2015
2016 if (bfd_seek (abfd, isymoff, SEEK_SET) != 0
2017 || bfd_bread (raw, sizeof (raw), abfd) != sizeof (raw))
2018 {
2019 (*_bfd_error_handler)
2020 (_("bfd_mach_o_read_dysymtab_symbol: unable to read %lu bytes at %lu"),
2021 (unsigned long) sizeof (raw), isymoff);
2022 return -1;
2023 }
2024 sym_index = bfd_h_get_32 (abfd, raw);
2025
2026 return bfd_mach_o_read_symtab_symbol (abfd, sym, s, sym_index);
2027 }
2028
2029 static const char *
2030 bfd_mach_o_i386_flavour_string (unsigned int flavour)
2031 {
2032 switch ((int) flavour)
2033 {
2034 case BFD_MACH_O_x86_THREAD_STATE32: return "x86_THREAD_STATE32";
2035 case BFD_MACH_O_x86_FLOAT_STATE32: return "x86_FLOAT_STATE32";
2036 case BFD_MACH_O_x86_EXCEPTION_STATE32: return "x86_EXCEPTION_STATE32";
2037 case BFD_MACH_O_x86_THREAD_STATE64: return "x86_THREAD_STATE64";
2038 case BFD_MACH_O_x86_FLOAT_STATE64: return "x86_FLOAT_STATE64";
2039 case BFD_MACH_O_x86_EXCEPTION_STATE64: return "x86_EXCEPTION_STATE64";
2040 case BFD_MACH_O_x86_THREAD_STATE: return "x86_THREAD_STATE";
2041 case BFD_MACH_O_x86_FLOAT_STATE: return "x86_FLOAT_STATE";
2042 case BFD_MACH_O_x86_EXCEPTION_STATE: return "x86_EXCEPTION_STATE";
2043 case BFD_MACH_O_x86_DEBUG_STATE32: return "x86_DEBUG_STATE32";
2044 case BFD_MACH_O_x86_DEBUG_STATE64: return "x86_DEBUG_STATE64";
2045 case BFD_MACH_O_x86_DEBUG_STATE: return "x86_DEBUG_STATE";
2046 case BFD_MACH_O_x86_THREAD_STATE_NONE: return "x86_THREAD_STATE_NONE";
2047 default: return "UNKNOWN";
2048 }
2049 }
2050
2051 static const char *
2052 bfd_mach_o_ppc_flavour_string (unsigned int flavour)
2053 {
2054 switch ((int) flavour)
2055 {
2056 case BFD_MACH_O_PPC_THREAD_STATE: return "PPC_THREAD_STATE";
2057 case BFD_MACH_O_PPC_FLOAT_STATE: return "PPC_FLOAT_STATE";
2058 case BFD_MACH_O_PPC_EXCEPTION_STATE: return "PPC_EXCEPTION_STATE";
2059 case BFD_MACH_O_PPC_VECTOR_STATE: return "PPC_VECTOR_STATE";
2060 case BFD_MACH_O_PPC_THREAD_STATE64: return "PPC_THREAD_STATE64";
2061 case BFD_MACH_O_PPC_EXCEPTION_STATE64: return "PPC_EXCEPTION_STATE64";
2062 default: return "UNKNOWN";
2063 }
2064 }
2065
2066 static int
2067 bfd_mach_o_read_dylinker (bfd *abfd, bfd_mach_o_load_command *command)
2068 {
2069 bfd_mach_o_dylinker_command *cmd = &command->command.dylinker;
2070 struct mach_o_str_command_external raw;
2071 unsigned int nameoff;
2072
2073 BFD_ASSERT ((command->type == BFD_MACH_O_LC_ID_DYLINKER)
2074 || (command->type == BFD_MACH_O_LC_LOAD_DYLINKER));
2075
2076 if (bfd_seek (abfd, command->offset + BFD_MACH_O_LC_SIZE, SEEK_SET) != 0
2077 || bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
2078 return -1;
2079
2080 nameoff = bfd_h_get_32 (abfd, raw.str);
2081
2082 cmd->name_offset = command->offset + nameoff;
2083 cmd->name_len = command->len - nameoff;
2084 cmd->name_str = bfd_alloc (abfd, cmd->name_len);
2085 if (cmd->name_str == NULL)
2086 return -1;
2087 if (bfd_seek (abfd, cmd->name_offset, SEEK_SET) != 0
2088 || bfd_bread (cmd->name_str, cmd->name_len, abfd) != cmd->name_len)
2089 return -1;
2090 return 0;
2091 }
2092
2093 static int
2094 bfd_mach_o_read_dylib (bfd *abfd, bfd_mach_o_load_command *command)
2095 {
2096 bfd_mach_o_dylib_command *cmd = &command->command.dylib;
2097 struct mach_o_dylib_command_external raw;
2098 unsigned int nameoff;
2099
2100 switch (command->type)
2101 {
2102 case BFD_MACH_O_LC_LOAD_DYLIB:
2103 case BFD_MACH_O_LC_LOAD_WEAK_DYLIB:
2104 case BFD_MACH_O_LC_ID_DYLIB:
2105 case BFD_MACH_O_LC_REEXPORT_DYLIB:
2106 case BFD_MACH_O_LC_LOAD_UPWARD_DYLIB:
2107 break;
2108 default:
2109 BFD_FAIL ();
2110 return -1;
2111 }
2112
2113 if (bfd_seek (abfd, command->offset + BFD_MACH_O_LC_SIZE, SEEK_SET) != 0
2114 || bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
2115 return -1;
2116
2117 nameoff = bfd_h_get_32 (abfd, raw.name);
2118 cmd->timestamp = bfd_h_get_32 (abfd, raw.timestamp);
2119 cmd->current_version = bfd_h_get_32 (abfd, raw.current_version);
2120 cmd->compatibility_version = bfd_h_get_32 (abfd, raw.compatibility_version);
2121
2122 cmd->name_offset = command->offset + nameoff;
2123 cmd->name_len = command->len - nameoff;
2124 cmd->name_str = bfd_alloc (abfd, cmd->name_len);
2125 if (cmd->name_str == NULL)
2126 return -1;
2127 if (bfd_seek (abfd, cmd->name_offset, SEEK_SET) != 0
2128 || bfd_bread (cmd->name_str, cmd->name_len, abfd) != cmd->name_len)
2129 return -1;
2130 return 0;
2131 }
2132
2133 static int
2134 bfd_mach_o_read_prebound_dylib (bfd *abfd ATTRIBUTE_UNUSED,
2135 bfd_mach_o_load_command *command ATTRIBUTE_UNUSED)
2136 {
2137 /* bfd_mach_o_prebound_dylib_command *cmd = &command->command.prebound_dylib; */
2138
2139 BFD_ASSERT (command->type == BFD_MACH_O_LC_PREBOUND_DYLIB);
2140 return 0;
2141 }
2142
2143 static int
2144 bfd_mach_o_read_thread (bfd *abfd, bfd_mach_o_load_command *command)
2145 {
2146 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
2147 bfd_mach_o_thread_command *cmd = &command->command.thread;
2148 unsigned int offset;
2149 unsigned int nflavours;
2150 unsigned int i;
2151
2152 BFD_ASSERT ((command->type == BFD_MACH_O_LC_THREAD)
2153 || (command->type == BFD_MACH_O_LC_UNIXTHREAD));
2154
2155 /* Count the number of threads. */
2156 offset = 8;
2157 nflavours = 0;
2158 while (offset != command->len)
2159 {
2160 struct mach_o_thread_command_external raw;
2161
2162 if (offset >= command->len)
2163 return -1;
2164
2165 if (bfd_seek (abfd, command->offset + offset, SEEK_SET) != 0
2166 || bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
2167 return -1;
2168
2169 offset += sizeof (raw) + bfd_h_get_32 (abfd, raw.count) * 4;
2170 nflavours++;
2171 }
2172
2173 /* Allocate threads. */
2174 cmd->flavours = bfd_alloc
2175 (abfd, nflavours * sizeof (bfd_mach_o_thread_flavour));
2176 if (cmd->flavours == NULL)
2177 return -1;
2178 cmd->nflavours = nflavours;
2179
2180 offset = 8;
2181 nflavours = 0;
2182 while (offset != command->len)
2183 {
2184 struct mach_o_thread_command_external raw;
2185
2186 if (offset >= command->len)
2187 return -1;
2188
2189 if (nflavours >= cmd->nflavours)
2190 return -1;
2191
2192 if (bfd_seek (abfd, command->offset + offset, SEEK_SET) != 0
2193 || bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
2194 return -1;
2195
2196 cmd->flavours[nflavours].flavour = bfd_h_get_32 (abfd, raw.flavour);
2197 cmd->flavours[nflavours].offset = command->offset + offset + sizeof (raw);
2198 cmd->flavours[nflavours].size = bfd_h_get_32 (abfd, raw.count) * 4;
2199 offset += cmd->flavours[nflavours].size + sizeof (raw);
2200 nflavours++;
2201 }
2202
2203 for (i = 0; i < nflavours; i++)
2204 {
2205 asection *bfdsec;
2206 unsigned int snamelen;
2207 char *sname;
2208 const char *flavourstr;
2209 const char *prefix = "LC_THREAD";
2210 unsigned int j = 0;
2211
2212 switch (mdata->header.cputype)
2213 {
2214 case BFD_MACH_O_CPU_TYPE_POWERPC:
2215 case BFD_MACH_O_CPU_TYPE_POWERPC_64:
2216 flavourstr = bfd_mach_o_ppc_flavour_string (cmd->flavours[i].flavour);
2217 break;
2218 case BFD_MACH_O_CPU_TYPE_I386:
2219 case BFD_MACH_O_CPU_TYPE_X86_64:
2220 flavourstr = bfd_mach_o_i386_flavour_string (cmd->flavours[i].flavour);
2221 break;
2222 default:
2223 flavourstr = "UNKNOWN_ARCHITECTURE";
2224 break;
2225 }
2226
2227 snamelen = strlen (prefix) + 1 + 20 + 1 + strlen (flavourstr) + 1;
2228 sname = bfd_alloc (abfd, snamelen);
2229 if (sname == NULL)
2230 return -1;
2231
2232 for (;;)
2233 {
2234 sprintf (sname, "%s.%s.%u", prefix, flavourstr, j);
2235 if (bfd_get_section_by_name (abfd, sname) == NULL)
2236 break;
2237 j++;
2238 }
2239
2240 bfdsec = bfd_make_section_with_flags (abfd, sname, SEC_HAS_CONTENTS);
2241
2242 bfdsec->vma = 0;
2243 bfdsec->lma = 0;
2244 bfdsec->size = cmd->flavours[i].size;
2245 bfdsec->filepos = cmd->flavours[i].offset;
2246 bfdsec->alignment_power = 0x0;
2247
2248 cmd->section = bfdsec;
2249 }
2250
2251 return 0;
2252 }
2253
2254 static int
2255 bfd_mach_o_read_dysymtab (bfd *abfd, bfd_mach_o_load_command *command)
2256 {
2257 bfd_mach_o_dysymtab_command *cmd = &command->command.dysymtab;
2258 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
2259
2260 BFD_ASSERT (command->type == BFD_MACH_O_LC_DYSYMTAB);
2261
2262 {
2263 struct mach_o_dysymtab_command_external raw;
2264
2265 if (bfd_seek (abfd, command->offset + BFD_MACH_O_LC_SIZE, SEEK_SET) != 0
2266 || bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
2267 return -1;
2268
2269 cmd->ilocalsym = bfd_h_get_32 (abfd, raw.ilocalsym);
2270 cmd->nlocalsym = bfd_h_get_32 (abfd, raw.nlocalsym);
2271 cmd->iextdefsym = bfd_h_get_32 (abfd, raw.iextdefsym);
2272 cmd->nextdefsym = bfd_h_get_32 (abfd, raw.nextdefsym);
2273 cmd->iundefsym = bfd_h_get_32 (abfd, raw.iundefsym);
2274 cmd->nundefsym = bfd_h_get_32 (abfd, raw.nundefsym);
2275 cmd->tocoff = bfd_h_get_32 (abfd, raw.tocoff);
2276 cmd->ntoc = bfd_h_get_32 (abfd, raw.ntoc);
2277 cmd->modtaboff = bfd_h_get_32 (abfd, raw.modtaboff);
2278 cmd->nmodtab = bfd_h_get_32 (abfd, raw.nmodtab);
2279 cmd->extrefsymoff = bfd_h_get_32 (abfd, raw.extrefsymoff);
2280 cmd->nextrefsyms = bfd_h_get_32 (abfd, raw.nextrefsyms);
2281 cmd->indirectsymoff = bfd_h_get_32 (abfd, raw.indirectsymoff);
2282 cmd->nindirectsyms = bfd_h_get_32 (abfd, raw.nindirectsyms);
2283 cmd->extreloff = bfd_h_get_32 (abfd, raw.extreloff);
2284 cmd->nextrel = bfd_h_get_32 (abfd, raw.nextrel);
2285 cmd->locreloff = bfd_h_get_32 (abfd, raw.locreloff);
2286 cmd->nlocrel = bfd_h_get_32 (abfd, raw.nlocrel);
2287 }
2288
2289 if (cmd->nmodtab != 0)
2290 {
2291 unsigned int i;
2292 int wide = bfd_mach_o_wide_p (abfd);
2293 unsigned int module_len = wide ? 56 : 52;
2294
2295 cmd->dylib_module =
2296 bfd_alloc (abfd, cmd->nmodtab * sizeof (bfd_mach_o_dylib_module));
2297 if (cmd->dylib_module == NULL)
2298 return -1;
2299
2300 if (bfd_seek (abfd, cmd->modtaboff, SEEK_SET) != 0)
2301 return -1;
2302
2303 for (i = 0; i < cmd->nmodtab; i++)
2304 {
2305 bfd_mach_o_dylib_module *module = &cmd->dylib_module[i];
2306 unsigned long v;
2307 unsigned char buf[56];
2308
2309 if (bfd_bread ((void *) buf, module_len, abfd) != module_len)
2310 return -1;
2311
2312 module->module_name_idx = bfd_h_get_32 (abfd, buf + 0);
2313 module->iextdefsym = bfd_h_get_32 (abfd, buf + 4);
2314 module->nextdefsym = bfd_h_get_32 (abfd, buf + 8);
2315 module->irefsym = bfd_h_get_32 (abfd, buf + 12);
2316 module->nrefsym = bfd_h_get_32 (abfd, buf + 16);
2317 module->ilocalsym = bfd_h_get_32 (abfd, buf + 20);
2318 module->nlocalsym = bfd_h_get_32 (abfd, buf + 24);
2319 module->iextrel = bfd_h_get_32 (abfd, buf + 28);
2320 module->nextrel = bfd_h_get_32 (abfd, buf + 32);
2321 v = bfd_h_get_32 (abfd, buf +36);
2322 module->iinit = v & 0xffff;
2323 module->iterm = (v >> 16) & 0xffff;
2324 v = bfd_h_get_32 (abfd, buf + 40);
2325 module->ninit = v & 0xffff;
2326 module->nterm = (v >> 16) & 0xffff;
2327 if (wide)
2328 {
2329 module->objc_module_info_size = bfd_h_get_32 (abfd, buf + 44);
2330 module->objc_module_info_addr = bfd_h_get_64 (abfd, buf + 48);
2331 }
2332 else
2333 {
2334 module->objc_module_info_addr = bfd_h_get_32 (abfd, buf + 44);
2335 module->objc_module_info_size = bfd_h_get_32 (abfd, buf + 48);
2336 }
2337 }
2338 }
2339
2340 if (cmd->ntoc != 0)
2341 {
2342 unsigned int i;
2343
2344 cmd->dylib_toc = bfd_alloc
2345 (abfd, cmd->ntoc * sizeof (bfd_mach_o_dylib_table_of_content));
2346 if (cmd->dylib_toc == NULL)
2347 return -1;
2348
2349 if (bfd_seek (abfd, cmd->tocoff, SEEK_SET) != 0)
2350 return -1;
2351
2352 for (i = 0; i < cmd->ntoc; i++)
2353 {
2354 struct mach_o_dylib_table_of_contents_external raw;
2355 bfd_mach_o_dylib_table_of_content *toc = &cmd->dylib_toc[i];
2356
2357 if (bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
2358 return -1;
2359
2360 toc->symbol_index = bfd_h_get_32 (abfd, raw.symbol_index);
2361 toc->module_index = bfd_h_get_32 (abfd, raw.module_index);
2362 }
2363 }
2364
2365 if (cmd->nindirectsyms != 0)
2366 {
2367 unsigned int i;
2368
2369 cmd->indirect_syms = bfd_alloc
2370 (abfd, cmd->nindirectsyms * sizeof (unsigned int));
2371 if (cmd->indirect_syms == NULL)
2372 return -1;
2373
2374 if (bfd_seek (abfd, cmd->indirectsymoff, SEEK_SET) != 0)
2375 return -1;
2376
2377 for (i = 0; i < cmd->nindirectsyms; i++)
2378 {
2379 unsigned char raw[4];
2380 unsigned int *is = &cmd->indirect_syms[i];
2381
2382 if (bfd_bread (raw, sizeof (raw), abfd) != sizeof (raw))
2383 return -1;
2384
2385 *is = bfd_h_get_32 (abfd, raw);
2386 }
2387 }
2388
2389 if (cmd->nextrefsyms != 0)
2390 {
2391 unsigned long v;
2392 unsigned int i;
2393
2394 cmd->ext_refs = bfd_alloc
2395 (abfd, cmd->nextrefsyms * sizeof (bfd_mach_o_dylib_reference));
2396 if (cmd->ext_refs == NULL)
2397 return -1;
2398
2399 if (bfd_seek (abfd, cmd->extrefsymoff, SEEK_SET) != 0)
2400 return -1;
2401
2402 for (i = 0; i < cmd->nextrefsyms; i++)
2403 {
2404 unsigned char raw[4];
2405 bfd_mach_o_dylib_reference *ref = &cmd->ext_refs[i];
2406
2407 if (bfd_bread (raw, sizeof (raw), abfd) != sizeof (raw))
2408 return -1;
2409
2410 /* Fields isym and flags are written as bit-fields, thus we need
2411 a specific processing for endianness. */
2412 v = bfd_h_get_32 (abfd, raw);
2413 if (bfd_big_endian (abfd))
2414 {
2415 ref->isym = (v >> 8) & 0xffffff;
2416 ref->flags = v & 0xff;
2417 }
2418 else
2419 {
2420 ref->isym = v & 0xffffff;
2421 ref->flags = (v >> 24) & 0xff;
2422 }
2423 }
2424 }
2425
2426 if (mdata->dysymtab)
2427 return -1;
2428 mdata->dysymtab = cmd;
2429
2430 return 0;
2431 }
2432
2433 static int
2434 bfd_mach_o_read_symtab (bfd *abfd, bfd_mach_o_load_command *command)
2435 {
2436 bfd_mach_o_symtab_command *symtab = &command->command.symtab;
2437 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
2438 struct mach_o_symtab_command_external raw;
2439
2440 BFD_ASSERT (command->type == BFD_MACH_O_LC_SYMTAB);
2441
2442 if (bfd_seek (abfd, command->offset + BFD_MACH_O_LC_SIZE, SEEK_SET) != 0
2443 || bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
2444 return -1;
2445
2446 symtab->symoff = bfd_h_get_32 (abfd, raw.symoff);
2447 symtab->nsyms = bfd_h_get_32 (abfd, raw.nsyms);
2448 symtab->stroff = bfd_h_get_32 (abfd, raw.stroff);
2449 symtab->strsize = bfd_h_get_32 (abfd, raw.strsize);
2450 symtab->symbols = NULL;
2451 symtab->strtab = NULL;
2452
2453 if (symtab->nsyms != 0)
2454 abfd->flags |= HAS_SYMS;
2455
2456 if (mdata->symtab)
2457 return -1;
2458 mdata->symtab = symtab;
2459 return 0;
2460 }
2461
2462 static int
2463 bfd_mach_o_read_uuid (bfd *abfd, bfd_mach_o_load_command *command)
2464 {
2465 bfd_mach_o_uuid_command *cmd = &command->command.uuid;
2466
2467 BFD_ASSERT (command->type == BFD_MACH_O_LC_UUID);
2468
2469 if (bfd_seek (abfd, command->offset + BFD_MACH_O_LC_SIZE, SEEK_SET) != 0
2470 || bfd_bread (cmd->uuid, 16, abfd) != 16)
2471 return -1;
2472
2473 return 0;
2474 }
2475
2476 static int
2477 bfd_mach_o_read_linkedit (bfd *abfd, bfd_mach_o_load_command *command)
2478 {
2479 bfd_mach_o_linkedit_command *cmd = &command->command.linkedit;
2480 struct mach_o_linkedit_data_command_external raw;
2481
2482 if (bfd_seek (abfd, command->offset + BFD_MACH_O_LC_SIZE, SEEK_SET) != 0
2483 || bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
2484 return -1;
2485
2486 cmd->dataoff = bfd_get_32 (abfd, raw.dataoff);
2487 cmd->datasize = bfd_get_32 (abfd, raw.datasize);
2488 return 0;
2489 }
2490
2491 static int
2492 bfd_mach_o_read_str (bfd *abfd, bfd_mach_o_load_command *command)
2493 {
2494 bfd_mach_o_str_command *cmd = &command->command.str;
2495 struct mach_o_str_command_external raw;
2496 unsigned long off;
2497
2498 if (bfd_seek (abfd, command->offset + BFD_MACH_O_LC_SIZE, SEEK_SET) != 0
2499 || bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
2500 return -1;
2501
2502 off = bfd_get_32 (abfd, raw.str);
2503 cmd->stroff = command->offset + off;
2504 cmd->str_len = command->len - off;
2505 cmd->str = bfd_alloc (abfd, cmd->str_len);
2506 if (cmd->str == NULL)
2507 return -1;
2508 if (bfd_seek (abfd, cmd->stroff, SEEK_SET) != 0
2509 || bfd_bread ((void *) cmd->str, cmd->str_len, abfd) != cmd->str_len)
2510 return -1;
2511 return 0;
2512 }
2513
2514 static int
2515 bfd_mach_o_read_dyld_info (bfd *abfd, bfd_mach_o_load_command *command)
2516 {
2517 bfd_mach_o_dyld_info_command *cmd = &command->command.dyld_info;
2518 struct mach_o_dyld_info_command_external raw;
2519
2520 if (bfd_seek (abfd, command->offset + BFD_MACH_O_LC_SIZE, SEEK_SET) != 0
2521 || bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
2522 return -1;
2523
2524 cmd->rebase_off = bfd_get_32 (abfd, raw.rebase_off);
2525 cmd->rebase_size = bfd_get_32 (abfd, raw.rebase_size);
2526 cmd->bind_off = bfd_get_32 (abfd, raw.bind_off);
2527 cmd->bind_size = bfd_get_32 (abfd, raw.bind_size);
2528 cmd->weak_bind_off = bfd_get_32 (abfd, raw.weak_bind_off);
2529 cmd->weak_bind_size = bfd_get_32 (abfd, raw.weak_bind_size);
2530 cmd->lazy_bind_off = bfd_get_32 (abfd, raw.lazy_bind_off);
2531 cmd->lazy_bind_size = bfd_get_32 (abfd, raw.lazy_bind_size);
2532 cmd->export_off = bfd_get_32 (abfd, raw.export_off);
2533 cmd->export_size = bfd_get_32 (abfd, raw.export_size);
2534 return 0;
2535 }
2536
2537 static bfd_boolean
2538 bfd_mach_o_read_version_min (bfd *abfd, bfd_mach_o_load_command *command)
2539 {
2540 bfd_mach_o_version_min_command *cmd = &command->command.version_min;
2541 struct mach_o_version_min_command_external raw;
2542 unsigned int ver;
2543
2544 if (bfd_seek (abfd, command->offset + BFD_MACH_O_LC_SIZE, SEEK_SET) != 0
2545 || bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
2546 return FALSE;
2547
2548 ver = bfd_get_32 (abfd, raw.version);
2549 cmd->rel = ver >> 16;
2550 cmd->maj = ver >> 8;
2551 cmd->min = ver;
2552 cmd->reserved = bfd_get_32 (abfd, raw.reserved);
2553 return TRUE;
2554 }
2555
2556 static int
2557 bfd_mach_o_read_segment (bfd *abfd,
2558 bfd_mach_o_load_command *command,
2559 unsigned int wide)
2560 {
2561 bfd_mach_o_segment_command *seg = &command->command.segment;
2562 unsigned long i;
2563
2564 if (wide)
2565 {
2566 struct mach_o_segment_command_64_external raw;
2567
2568 BFD_ASSERT (command->type == BFD_MACH_O_LC_SEGMENT_64);
2569
2570 if (bfd_seek (abfd, command->offset + BFD_MACH_O_LC_SIZE, SEEK_SET) != 0
2571 || bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
2572 return -1;
2573
2574 memcpy (seg->segname, raw.segname, 16);
2575 seg->segname[16] = '\0';
2576
2577 seg->vmaddr = bfd_h_get_64 (abfd, raw.vmaddr);
2578 seg->vmsize = bfd_h_get_64 (abfd, raw.vmsize);
2579 seg->fileoff = bfd_h_get_64 (abfd, raw.fileoff);
2580 seg->filesize = bfd_h_get_64 (abfd, raw.filesize);
2581 seg->maxprot = bfd_h_get_32 (abfd, raw.maxprot);
2582 seg->initprot = bfd_h_get_32 (abfd, raw.initprot);
2583 seg->nsects = bfd_h_get_32 (abfd, raw.nsects);
2584 seg->flags = bfd_h_get_32 (abfd, raw.flags);
2585 }
2586 else
2587 {
2588 struct mach_o_segment_command_32_external raw;
2589
2590 BFD_ASSERT (command->type == BFD_MACH_O_LC_SEGMENT);
2591
2592 if (bfd_seek (abfd, command->offset + BFD_MACH_O_LC_SIZE, SEEK_SET) != 0
2593 || bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
2594 return -1;
2595
2596 memcpy (seg->segname, raw.segname, 16);
2597 seg->segname[16] = '\0';
2598
2599 seg->vmaddr = bfd_h_get_32 (abfd, raw.vmaddr);
2600 seg->vmsize = bfd_h_get_32 (abfd, raw.vmsize);
2601 seg->fileoff = bfd_h_get_32 (abfd, raw.fileoff);
2602 seg->filesize = bfd_h_get_32 (abfd, raw.filesize);
2603 seg->maxprot = bfd_h_get_32 (abfd, raw.maxprot);
2604 seg->initprot = bfd_h_get_32 (abfd, raw.initprot);
2605 seg->nsects = bfd_h_get_32 (abfd, raw.nsects);
2606 seg->flags = bfd_h_get_32 (abfd, raw.flags);
2607 }
2608 seg->sect_head = NULL;
2609 seg->sect_tail = NULL;
2610
2611 for (i = 0; i < seg->nsects; i++)
2612 {
2613 bfd_vma segoff;
2614 asection *sec;
2615
2616 if (wide)
2617 segoff = command->offset + BFD_MACH_O_LC_SEGMENT_64_SIZE
2618 + (i * BFD_MACH_O_SECTION_64_SIZE);
2619 else
2620 segoff = command->offset + BFD_MACH_O_LC_SEGMENT_SIZE
2621 + (i * BFD_MACH_O_SECTION_SIZE);
2622
2623 sec = bfd_mach_o_read_section (abfd, segoff, seg->initprot, wide);
2624 if (sec == NULL)
2625 return -1;
2626
2627 bfd_mach_o_append_section_to_segment (seg, sec);
2628 }
2629
2630 return 0;
2631 }
2632
2633 static int
2634 bfd_mach_o_read_segment_32 (bfd *abfd, bfd_mach_o_load_command *command)
2635 {
2636 return bfd_mach_o_read_segment (abfd, command, 0);
2637 }
2638
2639 static int
2640 bfd_mach_o_read_segment_64 (bfd *abfd, bfd_mach_o_load_command *command)
2641 {
2642 return bfd_mach_o_read_segment (abfd, command, 1);
2643 }
2644
2645 static int
2646 bfd_mach_o_read_command (bfd *abfd, bfd_mach_o_load_command *command)
2647 {
2648 struct mach_o_load_command_external raw;
2649 unsigned int cmd;
2650
2651 /* Read command type and length. */
2652 if (bfd_seek (abfd, command->offset, SEEK_SET) != 0
2653 || bfd_bread (&raw, BFD_MACH_O_LC_SIZE, abfd) != BFD_MACH_O_LC_SIZE)
2654 return -1;
2655
2656 cmd = bfd_h_get_32 (abfd, raw.cmd);
2657 command->type = cmd & ~BFD_MACH_O_LC_REQ_DYLD;
2658 command->type_required = cmd & BFD_MACH_O_LC_REQ_DYLD ? TRUE : FALSE;
2659 command->len = bfd_h_get_32 (abfd, raw.cmdsize);
2660
2661 switch (command->type)
2662 {
2663 case BFD_MACH_O_LC_SEGMENT:
2664 if (bfd_mach_o_read_segment_32 (abfd, command) != 0)
2665 return -1;
2666 break;
2667 case BFD_MACH_O_LC_SEGMENT_64:
2668 if (bfd_mach_o_read_segment_64 (abfd, command) != 0)
2669 return -1;
2670 break;
2671 case BFD_MACH_O_LC_SYMTAB:
2672 if (bfd_mach_o_read_symtab (abfd, command) != 0)
2673 return -1;
2674 break;
2675 case BFD_MACH_O_LC_SYMSEG:
2676 break;
2677 case BFD_MACH_O_LC_THREAD:
2678 case BFD_MACH_O_LC_UNIXTHREAD:
2679 if (bfd_mach_o_read_thread (abfd, command) != 0)
2680 return -1;
2681 break;
2682 case BFD_MACH_O_LC_LOAD_DYLINKER:
2683 case BFD_MACH_O_LC_ID_DYLINKER:
2684 if (bfd_mach_o_read_dylinker (abfd, command) != 0)
2685 return -1;
2686 break;
2687 case BFD_MACH_O_LC_LOAD_DYLIB:
2688 case BFD_MACH_O_LC_ID_DYLIB:
2689 case BFD_MACH_O_LC_LOAD_WEAK_DYLIB:
2690 case BFD_MACH_O_LC_REEXPORT_DYLIB:
2691 case BFD_MACH_O_LC_LOAD_UPWARD_DYLIB:
2692 if (bfd_mach_o_read_dylib (abfd, command) != 0)
2693 return -1;
2694 break;
2695 case BFD_MACH_O_LC_PREBOUND_DYLIB:
2696 if (bfd_mach_o_read_prebound_dylib (abfd, command) != 0)
2697 return -1;
2698 break;
2699 case BFD_MACH_O_LC_LOADFVMLIB:
2700 case BFD_MACH_O_LC_IDFVMLIB:
2701 case BFD_MACH_O_LC_IDENT:
2702 case BFD_MACH_O_LC_FVMFILE:
2703 case BFD_MACH_O_LC_PREPAGE:
2704 case BFD_MACH_O_LC_ROUTINES:
2705 case BFD_MACH_O_LC_ROUTINES_64:
2706 break;
2707 case BFD_MACH_O_LC_SUB_FRAMEWORK:
2708 case BFD_MACH_O_LC_SUB_UMBRELLA:
2709 case BFD_MACH_O_LC_SUB_LIBRARY:
2710 case BFD_MACH_O_LC_SUB_CLIENT:
2711 case BFD_MACH_O_LC_RPATH:
2712 if (bfd_mach_o_read_str (abfd, command) != 0)
2713 return -1;
2714 break;
2715 case BFD_MACH_O_LC_DYSYMTAB:
2716 if (bfd_mach_o_read_dysymtab (abfd, command) != 0)
2717 return -1;
2718 break;
2719 case BFD_MACH_O_LC_TWOLEVEL_HINTS:
2720 case BFD_MACH_O_LC_PREBIND_CKSUM:
2721 break;
2722 case BFD_MACH_O_LC_UUID:
2723 if (bfd_mach_o_read_uuid (abfd, command) != 0)
2724 return -1;
2725 break;
2726 case BFD_MACH_O_LC_CODE_SIGNATURE:
2727 case BFD_MACH_O_LC_SEGMENT_SPLIT_INFO:
2728 case BFD_MACH_O_LC_FUNCTION_STARTS:
2729 if (bfd_mach_o_read_linkedit (abfd, command) != 0)
2730 return -1;
2731 break;
2732 case BFD_MACH_O_LC_DYLD_INFO:
2733 if (bfd_mach_o_read_dyld_info (abfd, command) != 0)
2734 return -1;
2735 break;
2736 case BFD_MACH_O_LC_VERSION_MIN_MACOSX:
2737 case BFD_MACH_O_LC_VERSION_MIN_IPHONEOS:
2738 if (!bfd_mach_o_read_version_min (abfd, command))
2739 return -1;
2740 break;
2741 default:
2742 (*_bfd_error_handler)(_("%B: unable to read unknown load command 0x%lx"),
2743 abfd, (unsigned long) command->type);
2744 break;
2745 }
2746
2747 return 0;
2748 }
2749
2750 static void
2751 bfd_mach_o_flatten_sections (bfd *abfd)
2752 {
2753 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
2754 long csect = 0;
2755 unsigned long i;
2756
2757 /* Count total number of sections. */
2758 mdata->nsects = 0;
2759
2760 for (i = 0; i < mdata->header.ncmds; i++)
2761 {
2762 if (mdata->commands[i].type == BFD_MACH_O_LC_SEGMENT
2763 || mdata->commands[i].type == BFD_MACH_O_LC_SEGMENT_64)
2764 {
2765 bfd_mach_o_segment_command *seg;
2766
2767 seg = &mdata->commands[i].command.segment;
2768 mdata->nsects += seg->nsects;
2769 }
2770 }
2771
2772 /* Allocate sections array. */
2773 mdata->sections = bfd_alloc (abfd,
2774 mdata->nsects * sizeof (bfd_mach_o_section *));
2775
2776 /* Fill the array. */
2777 csect = 0;
2778
2779 for (i = 0; i < mdata->header.ncmds; i++)
2780 {
2781 if (mdata->commands[i].type == BFD_MACH_O_LC_SEGMENT
2782 || mdata->commands[i].type == BFD_MACH_O_LC_SEGMENT_64)
2783 {
2784 bfd_mach_o_segment_command *seg;
2785 bfd_mach_o_section *sec;
2786
2787 seg = &mdata->commands[i].command.segment;
2788 BFD_ASSERT (csect + seg->nsects <= mdata->nsects);
2789
2790 for (sec = seg->sect_head; sec != NULL; sec = sec->next)
2791 mdata->sections[csect++] = sec;
2792 }
2793 }
2794 }
2795
2796 int
2797 bfd_mach_o_scan_start_address (bfd *abfd)
2798 {
2799 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
2800 bfd_mach_o_thread_command *cmd = NULL;
2801 unsigned long i;
2802
2803 for (i = 0; i < mdata->header.ncmds; i++)
2804 {
2805 if ((mdata->commands[i].type == BFD_MACH_O_LC_THREAD) ||
2806 (mdata->commands[i].type == BFD_MACH_O_LC_UNIXTHREAD))
2807 {
2808 if (cmd == NULL)
2809 cmd = &mdata->commands[i].command.thread;
2810 else
2811 return 0;
2812 }
2813 }
2814
2815 if (cmd == NULL)
2816 return 0;
2817
2818 for (i = 0; i < cmd->nflavours; i++)
2819 {
2820 if ((mdata->header.cputype == BFD_MACH_O_CPU_TYPE_I386)
2821 && (cmd->flavours[i].flavour
2822 == (unsigned long) BFD_MACH_O_x86_THREAD_STATE32))
2823 {
2824 unsigned char buf[4];
2825
2826 if (bfd_seek (abfd, cmd->flavours[i].offset + 40, SEEK_SET) != 0
2827 || bfd_bread (buf, 4, abfd) != 4)
2828 return -1;
2829
2830 abfd->start_address = bfd_h_get_32 (abfd, buf);
2831 }
2832 else if ((mdata->header.cputype == BFD_MACH_O_CPU_TYPE_POWERPC)
2833 && (cmd->flavours[i].flavour == BFD_MACH_O_PPC_THREAD_STATE))
2834 {
2835 unsigned char buf[4];
2836
2837 if (bfd_seek (abfd, cmd->flavours[i].offset + 0, SEEK_SET) != 0
2838 || bfd_bread (buf, 4, abfd) != 4)
2839 return -1;
2840
2841 abfd->start_address = bfd_h_get_32 (abfd, buf);
2842 }
2843 else if ((mdata->header.cputype == BFD_MACH_O_CPU_TYPE_POWERPC_64)
2844 && (cmd->flavours[i].flavour == BFD_MACH_O_PPC_THREAD_STATE64))
2845 {
2846 unsigned char buf[8];
2847
2848 if (bfd_seek (abfd, cmd->flavours[i].offset + 0, SEEK_SET) != 0
2849 || bfd_bread (buf, 8, abfd) != 8)
2850 return -1;
2851
2852 abfd->start_address = bfd_h_get_64 (abfd, buf);
2853 }
2854 else if ((mdata->header.cputype == BFD_MACH_O_CPU_TYPE_X86_64)
2855 && (cmd->flavours[i].flavour == BFD_MACH_O_x86_THREAD_STATE64))
2856 {
2857 unsigned char buf[8];
2858
2859 if (bfd_seek (abfd, cmd->flavours[i].offset + (16 * 8), SEEK_SET) != 0
2860 || bfd_bread (buf, 8, abfd) != 8)
2861 return -1;
2862
2863 abfd->start_address = bfd_h_get_64 (abfd, buf);
2864 }
2865 }
2866
2867 return 0;
2868 }
2869
2870 bfd_boolean
2871 bfd_mach_o_set_arch_mach (bfd *abfd,
2872 enum bfd_architecture arch,
2873 unsigned long machine)
2874 {
2875 bfd_mach_o_backend_data *bed = bfd_mach_o_get_backend_data (abfd);
2876
2877 /* If this isn't the right architecture for this backend, and this
2878 isn't the generic backend, fail. */
2879 if (arch != bed->arch
2880 && arch != bfd_arch_unknown
2881 && bed->arch != bfd_arch_unknown)
2882 return FALSE;
2883
2884 return bfd_default_set_arch_mach (abfd, arch, machine);
2885 }
2886
2887 int
2888 bfd_mach_o_scan (bfd *abfd,
2889 bfd_mach_o_header *header,
2890 bfd_mach_o_data_struct *mdata)
2891 {
2892 unsigned int i;
2893 enum bfd_architecture cputype;
2894 unsigned long cpusubtype;
2895 unsigned int hdrsize;
2896
2897 hdrsize = mach_o_wide_p (header) ?
2898 BFD_MACH_O_HEADER_64_SIZE : BFD_MACH_O_HEADER_SIZE;
2899
2900 mdata->header = *header;
2901
2902 abfd->flags = abfd->flags & BFD_IN_MEMORY;
2903 switch (header->filetype)
2904 {
2905 case BFD_MACH_O_MH_OBJECT:
2906 abfd->flags |= HAS_RELOC;
2907 break;
2908 case BFD_MACH_O_MH_EXECUTE:
2909 abfd->flags |= EXEC_P;
2910 break;
2911 case BFD_MACH_O_MH_DYLIB:
2912 case BFD_MACH_O_MH_BUNDLE:
2913 abfd->flags |= DYNAMIC;
2914 break;
2915 }
2916
2917 abfd->tdata.mach_o_data = mdata;
2918
2919 bfd_mach_o_convert_architecture (header->cputype, header->cpusubtype,
2920 &cputype, &cpusubtype);
2921 if (cputype == bfd_arch_unknown)
2922 {
2923 (*_bfd_error_handler) (_("bfd_mach_o_scan: unknown architecture 0x%lx/0x%lx"),
2924 header->cputype, header->cpusubtype);
2925 return -1;
2926 }
2927
2928 bfd_set_arch_mach (abfd, cputype, cpusubtype);
2929
2930 if (header->ncmds != 0)
2931 {
2932 mdata->commands = bfd_alloc
2933 (abfd, header->ncmds * sizeof (bfd_mach_o_load_command));
2934 if (mdata->commands == NULL)
2935 return -1;
2936
2937 for (i = 0; i < header->ncmds; i++)
2938 {
2939 bfd_mach_o_load_command *cur = &mdata->commands[i];
2940
2941 if (i == 0)
2942 cur->offset = hdrsize;
2943 else
2944 {
2945 bfd_mach_o_load_command *prev = &mdata->commands[i - 1];
2946 cur->offset = prev->offset + prev->len;
2947 }
2948
2949 if (bfd_mach_o_read_command (abfd, cur) < 0)
2950 return -1;
2951 }
2952 }
2953
2954 if (bfd_mach_o_scan_start_address (abfd) < 0)
2955 return -1;
2956
2957 bfd_mach_o_flatten_sections (abfd);
2958 return 0;
2959 }
2960
2961 bfd_boolean
2962 bfd_mach_o_mkobject_init (bfd *abfd)
2963 {
2964 bfd_mach_o_data_struct *mdata = NULL;
2965
2966 mdata = bfd_alloc (abfd, sizeof (bfd_mach_o_data_struct));
2967 if (mdata == NULL)
2968 return FALSE;
2969 abfd->tdata.mach_o_data = mdata;
2970
2971 mdata->header.magic = 0;
2972 mdata->header.cputype = 0;
2973 mdata->header.cpusubtype = 0;
2974 mdata->header.filetype = 0;
2975 mdata->header.ncmds = 0;
2976 mdata->header.sizeofcmds = 0;
2977 mdata->header.flags = 0;
2978 mdata->header.byteorder = BFD_ENDIAN_UNKNOWN;
2979 mdata->commands = NULL;
2980 mdata->nsects = 0;
2981 mdata->sections = NULL;
2982
2983 return TRUE;
2984 }
2985
2986 static bfd_boolean
2987 bfd_mach_o_gen_mkobject (bfd *abfd)
2988 {
2989 bfd_mach_o_data_struct *mdata;
2990
2991 if (!bfd_mach_o_mkobject_init (abfd))
2992 return FALSE;
2993
2994 mdata = bfd_mach_o_get_data (abfd);
2995 mdata->header.magic = BFD_MACH_O_MH_MAGIC;
2996 mdata->header.cputype = 0;
2997 mdata->header.cpusubtype = 0;
2998 mdata->header.byteorder = abfd->xvec->byteorder;
2999 mdata->header.version = 1;
3000
3001 return TRUE;
3002 }
3003
3004 const bfd_target *
3005 bfd_mach_o_header_p (bfd *abfd,
3006 bfd_mach_o_filetype filetype,
3007 bfd_mach_o_cpu_type cputype)
3008 {
3009 struct bfd_preserve preserve;
3010 bfd_mach_o_header header;
3011
3012 preserve.marker = NULL;
3013 if (!bfd_mach_o_read_header (abfd, &header))
3014 goto wrong;
3015
3016 if (! (header.byteorder == BFD_ENDIAN_BIG
3017 || header.byteorder == BFD_ENDIAN_LITTLE))
3018 {
3019 (*_bfd_error_handler) (_("unknown header byte-order value 0x%lx"),
3020 (unsigned long) header.byteorder);
3021 goto wrong;
3022 }
3023
3024 if (! ((header.byteorder == BFD_ENDIAN_BIG
3025 && abfd->xvec->byteorder == BFD_ENDIAN_BIG
3026 && abfd->xvec->header_byteorder == BFD_ENDIAN_BIG)
3027 || (header.byteorder == BFD_ENDIAN_LITTLE
3028 && abfd->xvec->byteorder == BFD_ENDIAN_LITTLE
3029 && abfd->xvec->header_byteorder == BFD_ENDIAN_LITTLE)))
3030 goto wrong;
3031
3032 /* Check cputype and filetype.
3033 In case of wildcard, do not accept magics that are handled by existing
3034 targets. */
3035 if (cputype)
3036 {
3037 if (header.cputype != cputype)
3038 goto wrong;
3039 }
3040 else
3041 {
3042 switch (header.cputype)
3043 {
3044 case BFD_MACH_O_CPU_TYPE_I386:
3045 /* Handled by mach-o-i386 */
3046 goto wrong;
3047 default:
3048 break;
3049 }
3050 }
3051 if (filetype)
3052 {
3053 if (header.filetype != filetype)
3054 goto wrong;
3055 }
3056 else
3057 {
3058 switch (header.filetype)
3059 {
3060 case BFD_MACH_O_MH_CORE:
3061 /* Handled by core_p */
3062 goto wrong;
3063 default:
3064 break;
3065 }
3066 }
3067
3068 preserve.marker = bfd_zalloc (abfd, sizeof (bfd_mach_o_data_struct));
3069 if (preserve.marker == NULL
3070 || !bfd_preserve_save (abfd, &preserve))
3071 goto fail;
3072
3073 if (bfd_mach_o_scan (abfd, &header,
3074 (bfd_mach_o_data_struct *) preserve.marker) != 0)
3075 goto wrong;
3076
3077 bfd_preserve_finish (abfd, &preserve);
3078 return abfd->xvec;
3079
3080 wrong:
3081 bfd_set_error (bfd_error_wrong_format);
3082
3083 fail:
3084 if (preserve.marker != NULL)
3085 bfd_preserve_restore (abfd, &preserve);
3086 return NULL;
3087 }
3088
3089 static const bfd_target *
3090 bfd_mach_o_gen_object_p (bfd *abfd)
3091 {
3092 return bfd_mach_o_header_p (abfd, 0, 0);
3093 }
3094
3095 static const bfd_target *
3096 bfd_mach_o_gen_core_p (bfd *abfd)
3097 {
3098 return bfd_mach_o_header_p (abfd, BFD_MACH_O_MH_CORE, 0);
3099 }
3100
3101 typedef struct mach_o_fat_archentry
3102 {
3103 unsigned long cputype;
3104 unsigned long cpusubtype;
3105 unsigned long offset;
3106 unsigned long size;
3107 unsigned long align;
3108 } mach_o_fat_archentry;
3109
3110 typedef struct mach_o_fat_data_struct
3111 {
3112 unsigned long magic;
3113 unsigned long nfat_arch;
3114 mach_o_fat_archentry *archentries;
3115 } mach_o_fat_data_struct;
3116
3117 const bfd_target *
3118 bfd_mach_o_archive_p (bfd *abfd)
3119 {
3120 mach_o_fat_data_struct *adata = NULL;
3121 struct mach_o_fat_header_external hdr;
3122 unsigned long i;
3123
3124 if (bfd_seek (abfd, 0, SEEK_SET) != 0
3125 || bfd_bread (&hdr, sizeof (hdr), abfd) != sizeof (hdr))
3126 goto error;
3127
3128 adata = bfd_alloc (abfd, sizeof (mach_o_fat_data_struct));
3129 if (adata == NULL)
3130 goto error;
3131
3132 adata->magic = bfd_getb32 (hdr.magic);
3133 adata->nfat_arch = bfd_getb32 (hdr.nfat_arch);
3134 if (adata->magic != 0xcafebabe)
3135 goto error;
3136 /* Avoid matching Java bytecode files, which have the same magic number.
3137 In the Java bytecode file format this field contains the JVM version,
3138 which starts at 43.0. */
3139 if (adata->nfat_arch > 30)
3140 goto error;
3141
3142 adata->archentries =
3143 bfd_alloc (abfd, adata->nfat_arch * sizeof (mach_o_fat_archentry));
3144 if (adata->archentries == NULL)
3145 goto error;
3146
3147 for (i = 0; i < adata->nfat_arch; i++)
3148 {
3149 struct mach_o_fat_arch_external arch;
3150 if (bfd_bread (&arch, sizeof (arch), abfd) != sizeof (arch))
3151 goto error;
3152 adata->archentries[i].cputype = bfd_getb32 (arch.cputype);
3153 adata->archentries[i].cpusubtype = bfd_getb32 (arch.cpusubtype);
3154 adata->archentries[i].offset = bfd_getb32 (arch.offset);
3155 adata->archentries[i].size = bfd_getb32 (arch.size);
3156 adata->archentries[i].align = bfd_getb32 (arch.align);
3157 }
3158
3159 abfd->tdata.mach_o_fat_data = adata;
3160 return abfd->xvec;
3161
3162 error:
3163 if (adata != NULL)
3164 bfd_release (abfd, adata);
3165 bfd_set_error (bfd_error_wrong_format);
3166 return NULL;
3167 }
3168
3169 bfd *
3170 bfd_mach_o_openr_next_archived_file (bfd *archive, bfd *prev)
3171 {
3172 mach_o_fat_data_struct *adata;
3173 mach_o_fat_archentry *entry = NULL;
3174 unsigned long i;
3175 bfd *nbfd;
3176 enum bfd_architecture arch_type;
3177 unsigned long arch_subtype;
3178
3179 adata = (mach_o_fat_data_struct *) archive->tdata.mach_o_fat_data;
3180 BFD_ASSERT (adata != NULL);
3181
3182 /* Find index of previous entry. */
3183 if (prev == NULL)
3184 i = 0; /* Start at first one. */
3185 else
3186 {
3187 for (i = 0; i < adata->nfat_arch; i++)
3188 {
3189 if (adata->archentries[i].offset == prev->origin)
3190 break;
3191 }
3192
3193 if (i == adata->nfat_arch)
3194 {
3195 /* Not found. */
3196 bfd_set_error (bfd_error_bad_value);
3197 return NULL;
3198 }
3199 i++; /* Get next entry. */
3200 }
3201
3202 if (i >= adata->nfat_arch)
3203 {
3204 bfd_set_error (bfd_error_no_more_archived_files);
3205 return NULL;
3206 }
3207
3208 entry = &adata->archentries[i];
3209 nbfd = _bfd_new_bfd_contained_in (archive);
3210 if (nbfd == NULL)
3211 return NULL;
3212
3213 nbfd->origin = entry->offset;
3214
3215 bfd_mach_o_convert_architecture (entry->cputype, entry->cpusubtype,
3216 &arch_type, &arch_subtype);
3217
3218 /* Create the member filename. Use ARCH_NAME. */
3219 nbfd->filename = bfd_printable_arch_mach (arch_type, arch_subtype);
3220 nbfd->iostream = NULL;
3221 bfd_set_arch_mach (nbfd, arch_type, arch_subtype);
3222
3223 return nbfd;
3224 }
3225
3226 /* If ABFD format is FORMAT and architecture is ARCH, return it.
3227 If ABFD is a fat image containing a member that corresponds to FORMAT
3228 and ARCH, returns it.
3229 In other case, returns NULL.
3230 This function allows transparent uses of fat images. */
3231 bfd *
3232 bfd_mach_o_fat_extract (bfd *abfd,
3233 bfd_format format,
3234 const bfd_arch_info_type *arch)
3235 {
3236 bfd *res;
3237 mach_o_fat_data_struct *adata;
3238 unsigned int i;
3239
3240 if (bfd_check_format (abfd, format))
3241 {
3242 if (bfd_get_arch_info (abfd) == arch)
3243 return abfd;
3244 return NULL;
3245 }
3246 if (!bfd_check_format (abfd, bfd_archive)
3247 || abfd->xvec != &mach_o_fat_vec)
3248 return NULL;
3249
3250 /* This is a Mach-O fat image. */
3251 adata = (mach_o_fat_data_struct *) abfd->tdata.mach_o_fat_data;
3252 BFD_ASSERT (adata != NULL);
3253
3254 for (i = 0; i < adata->nfat_arch; i++)
3255 {
3256 struct mach_o_fat_archentry *e = &adata->archentries[i];
3257 enum bfd_architecture cpu_type;
3258 unsigned long cpu_subtype;
3259
3260 bfd_mach_o_convert_architecture (e->cputype, e->cpusubtype,
3261 &cpu_type, &cpu_subtype);
3262 if (cpu_type != arch->arch || cpu_subtype != arch->mach)
3263 continue;
3264
3265 /* The architecture is found. */
3266 res = _bfd_new_bfd_contained_in (abfd);
3267 if (res == NULL)
3268 return NULL;
3269
3270 res->origin = e->offset;
3271
3272 res->filename = bfd_printable_arch_mach (cpu_type, cpu_subtype);
3273 res->iostream = NULL;
3274
3275 if (bfd_check_format (res, format))
3276 {
3277 BFD_ASSERT (bfd_get_arch_info (res) == arch);
3278 return res;
3279 }
3280 bfd_close (res);
3281 return NULL;
3282 }
3283
3284 return NULL;
3285 }
3286
3287 int
3288 bfd_mach_o_lookup_command (bfd *abfd,
3289 bfd_mach_o_load_command_type type,
3290 bfd_mach_o_load_command **mcommand)
3291 {
3292 struct mach_o_data_struct *md = bfd_mach_o_get_data (abfd);
3293 bfd_mach_o_load_command *ncmd = NULL;
3294 unsigned int i, num;
3295
3296 BFD_ASSERT (md != NULL);
3297 BFD_ASSERT (mcommand != NULL);
3298
3299 num = 0;
3300 for (i = 0; i < md->header.ncmds; i++)
3301 {
3302 struct bfd_mach_o_load_command *cmd = &md->commands[i];
3303
3304 if (cmd->type != type)
3305 continue;
3306
3307 if (num == 0)
3308 ncmd = cmd;
3309 num++;
3310 }
3311
3312 *mcommand = ncmd;
3313 return num;
3314 }
3315
3316 unsigned long
3317 bfd_mach_o_stack_addr (enum bfd_mach_o_cpu_type type)
3318 {
3319 switch (type)
3320 {
3321 case BFD_MACH_O_CPU_TYPE_MC680x0:
3322 return 0x04000000;
3323 case BFD_MACH_O_CPU_TYPE_MC88000:
3324 return 0xffffe000;
3325 case BFD_MACH_O_CPU_TYPE_POWERPC:
3326 return 0xc0000000;
3327 case BFD_MACH_O_CPU_TYPE_I386:
3328 return 0xc0000000;
3329 case BFD_MACH_O_CPU_TYPE_SPARC:
3330 return 0xf0000000;
3331 case BFD_MACH_O_CPU_TYPE_I860:
3332 return 0;
3333 case BFD_MACH_O_CPU_TYPE_HPPA:
3334 return 0xc0000000 - 0x04000000;
3335 default:
3336 return 0;
3337 }
3338 }
3339
3340 typedef struct bfd_mach_o_xlat_name
3341 {
3342 const char *name;
3343 unsigned long val;
3344 }
3345 bfd_mach_o_xlat_name;
3346
3347 static void
3348 bfd_mach_o_print_flags (const bfd_mach_o_xlat_name *table,
3349 unsigned long val,
3350 FILE *file)
3351 {
3352 int first = 1;
3353
3354 for (; table->name; table++)
3355 {
3356 if (table->val & val)
3357 {
3358 if (!first)
3359 fprintf (file, "+");
3360 fprintf (file, "%s", table->name);
3361 val &= ~table->val;
3362 first = 0;
3363 }
3364 }
3365 if (val)
3366 {
3367 if (!first)
3368 fprintf (file, "+");
3369 fprintf (file, "0x%lx", val);
3370 return;
3371 }
3372 if (first)
3373 fprintf (file, "-");
3374 }
3375
3376 static const char *
3377 bfd_mach_o_get_name_or_null (const bfd_mach_o_xlat_name *table,
3378 unsigned long val)
3379 {
3380 for (; table->name; table++)
3381 if (table->val == val)
3382 return table->name;
3383 return NULL;
3384 }
3385
3386 static const char *
3387 bfd_mach_o_get_name (const bfd_mach_o_xlat_name *table, unsigned long val)
3388 {
3389 const char *res = bfd_mach_o_get_name_or_null (table, val);
3390
3391 if (res == NULL)
3392 return "*UNKNOWN*";
3393 else
3394 return res;
3395 }
3396
3397 static bfd_mach_o_xlat_name bfd_mach_o_cpu_name[] =
3398 {
3399 { "vax", BFD_MACH_O_CPU_TYPE_VAX },
3400 { "mc680x0", BFD_MACH_O_CPU_TYPE_MC680x0 },
3401 { "i386", BFD_MACH_O_CPU_TYPE_I386 },
3402 { "mips", BFD_MACH_O_CPU_TYPE_MIPS },
3403 { "mc98000", BFD_MACH_O_CPU_TYPE_MC98000 },
3404 { "hppa", BFD_MACH_O_CPU_TYPE_HPPA },
3405 { "arm", BFD_MACH_O_CPU_TYPE_ARM },
3406 { "mc88000", BFD_MACH_O_CPU_TYPE_MC88000 },
3407 { "sparc", BFD_MACH_O_CPU_TYPE_SPARC },
3408 { "i860", BFD_MACH_O_CPU_TYPE_I860 },
3409 { "alpha", BFD_MACH_O_CPU_TYPE_ALPHA },
3410 { "powerpc", BFD_MACH_O_CPU_TYPE_POWERPC },
3411 { "powerpc_64", BFD_MACH_O_CPU_TYPE_POWERPC_64 },
3412 { "x86_64", BFD_MACH_O_CPU_TYPE_X86_64 },
3413 { NULL, 0}
3414 };
3415
3416 static bfd_mach_o_xlat_name bfd_mach_o_filetype_name[] =
3417 {
3418 { "object", BFD_MACH_O_MH_OBJECT },
3419 { "execute", BFD_MACH_O_MH_EXECUTE },
3420 { "fvmlib", BFD_MACH_O_MH_FVMLIB },
3421 { "core", BFD_MACH_O_MH_CORE },
3422 { "preload", BFD_MACH_O_MH_PRELOAD },
3423 { "dylib", BFD_MACH_O_MH_DYLIB },
3424 { "dylinker", BFD_MACH_O_MH_DYLINKER },
3425 { "bundle", BFD_MACH_O_MH_BUNDLE },
3426 { "dylib_stub", BFD_MACH_O_MH_DYLIB_STUB },
3427 { "dym", BFD_MACH_O_MH_DSYM },
3428 { "kext_bundle", BFD_MACH_O_MH_KEXT_BUNDLE },
3429 { NULL, 0}
3430 };
3431
3432 static bfd_mach_o_xlat_name bfd_mach_o_header_flags_name[] =
3433 {
3434 { "noundefs", BFD_MACH_O_MH_NOUNDEFS },
3435 { "incrlink", BFD_MACH_O_MH_INCRLINK },
3436 { "dyldlink", BFD_MACH_O_MH_DYLDLINK },
3437 { "bindatload", BFD_MACH_O_MH_BINDATLOAD },
3438 { "prebound", BFD_MACH_O_MH_PREBOUND },
3439 { "split_segs", BFD_MACH_O_MH_SPLIT_SEGS },
3440 { "lazy_init", BFD_MACH_O_MH_LAZY_INIT },
3441 { "twolevel", BFD_MACH_O_MH_TWOLEVEL },
3442 { "force_flat", BFD_MACH_O_MH_FORCE_FLAT },
3443 { "nomultidefs", BFD_MACH_O_MH_NOMULTIDEFS },
3444 { "nofixprebinding", BFD_MACH_O_MH_NOFIXPREBINDING },
3445 { "prebindable", BFD_MACH_O_MH_PREBINDABLE },
3446 { "allmodsbound", BFD_MACH_O_MH_ALLMODSBOUND },
3447 { "subsections_via_symbols", BFD_MACH_O_MH_SUBSECTIONS_VIA_SYMBOLS },
3448 { "canonical", BFD_MACH_O_MH_CANONICAL },
3449 { "weak_defines", BFD_MACH_O_MH_WEAK_DEFINES },
3450 { "binds_to_weak", BFD_MACH_O_MH_BINDS_TO_WEAK },
3451 { "allow_stack_execution", BFD_MACH_O_MH_ALLOW_STACK_EXECUTION },
3452 { "root_safe", BFD_MACH_O_MH_ROOT_SAFE },
3453 { "setuid_safe", BFD_MACH_O_MH_SETUID_SAFE },
3454 { "no_reexported_dylibs", BFD_MACH_O_MH_NO_REEXPORTED_DYLIBS },
3455 { "pie", BFD_MACH_O_MH_PIE },
3456 { NULL, 0}
3457 };
3458
3459 static bfd_mach_o_xlat_name bfd_mach_o_section_type_name[] =
3460 {
3461 { "regular", BFD_MACH_O_S_REGULAR},
3462 { "zerofill", BFD_MACH_O_S_ZEROFILL},
3463 { "cstring_literals", BFD_MACH_O_S_CSTRING_LITERALS},
3464 { "4byte_literals", BFD_MACH_O_S_4BYTE_LITERALS},
3465 { "8byte_literals", BFD_MACH_O_S_8BYTE_LITERALS},
3466 { "literal_pointers", BFD_MACH_O_S_LITERAL_POINTERS},
3467 { "non_lazy_symbol_pointers", BFD_MACH_O_S_NON_LAZY_SYMBOL_POINTERS},
3468 { "lazy_symbol_pointers", BFD_MACH_O_S_LAZY_SYMBOL_POINTERS},
3469 { "symbol_stubs", BFD_MACH_O_S_SYMBOL_STUBS},
3470 { "mod_init_func_pointers", BFD_MACH_O_S_MOD_INIT_FUNC_POINTERS},
3471 { "mod_fini_func_pointers", BFD_MACH_O_S_MOD_FINI_FUNC_POINTERS},
3472 { "coalesced", BFD_MACH_O_S_COALESCED},
3473 { "gb_zerofill", BFD_MACH_O_S_GB_ZEROFILL},
3474 { "interposing", BFD_MACH_O_S_INTERPOSING},
3475 { "16byte_literals", BFD_MACH_O_S_16BYTE_LITERALS},
3476 { "dtrace_dof", BFD_MACH_O_S_DTRACE_DOF},
3477 { "lazy_dylib_symbol_pointers", BFD_MACH_O_S_LAZY_DYLIB_SYMBOL_POINTERS},
3478 { NULL, 0}
3479 };
3480
3481 static bfd_mach_o_xlat_name bfd_mach_o_section_attribute_name[] =
3482 {
3483 { "loc_reloc", BFD_MACH_O_S_ATTR_LOC_RELOC },
3484 { "ext_reloc", BFD_MACH_O_S_ATTR_EXT_RELOC },
3485 { "some_instructions", BFD_MACH_O_S_ATTR_SOME_INSTRUCTIONS },
3486 { "debug", BFD_MACH_O_S_ATTR_DEBUG },
3487 { "modifying_code", BFD_MACH_O_S_SELF_MODIFYING_CODE },
3488 { "live_support", BFD_MACH_O_S_ATTR_LIVE_SUPPORT },
3489 { "no_dead_strip", BFD_MACH_O_S_ATTR_NO_DEAD_STRIP },
3490 { "strip_static_syms", BFD_MACH_O_S_ATTR_STRIP_STATIC_SYMS },
3491 { "no_toc", BFD_MACH_O_S_ATTR_NO_TOC },
3492 { "pure_instructions", BFD_MACH_O_S_ATTR_PURE_INSTRUCTIONS },
3493 { NULL, 0}
3494 };
3495
3496 static bfd_mach_o_xlat_name bfd_mach_o_load_command_name[] =
3497 {
3498 { "segment", BFD_MACH_O_LC_SEGMENT},
3499 { "symtab", BFD_MACH_O_LC_SYMTAB},
3500 { "symseg", BFD_MACH_O_LC_SYMSEG},
3501 { "thread", BFD_MACH_O_LC_THREAD},
3502 { "unixthread", BFD_MACH_O_LC_UNIXTHREAD},
3503 { "loadfvmlib", BFD_MACH_O_LC_LOADFVMLIB},
3504 { "idfvmlib", BFD_MACH_O_LC_IDFVMLIB},
3505 { "ident", BFD_MACH_O_LC_IDENT},
3506 { "fvmfile", BFD_MACH_O_LC_FVMFILE},
3507 { "prepage", BFD_MACH_O_LC_PREPAGE},
3508 { "dysymtab", BFD_MACH_O_LC_DYSYMTAB},
3509 { "load_dylib", BFD_MACH_O_LC_LOAD_DYLIB},
3510 { "id_dylib", BFD_MACH_O_LC_ID_DYLIB},
3511 { "load_dylinker", BFD_MACH_O_LC_LOAD_DYLINKER},
3512 { "id_dylinker", BFD_MACH_O_LC_ID_DYLINKER},
3513 { "prebound_dylib", BFD_MACH_O_LC_PREBOUND_DYLIB},
3514 { "routines", BFD_MACH_O_LC_ROUTINES},
3515 { "sub_framework", BFD_MACH_O_LC_SUB_FRAMEWORK},
3516 { "sub_umbrella", BFD_MACH_O_LC_SUB_UMBRELLA},
3517 { "sub_client", BFD_MACH_O_LC_SUB_CLIENT},
3518 { "sub_library", BFD_MACH_O_LC_SUB_LIBRARY},
3519 { "twolevel_hints", BFD_MACH_O_LC_TWOLEVEL_HINTS},
3520 { "prebind_cksum", BFD_MACH_O_LC_PREBIND_CKSUM},
3521 { "load_weak_dylib", BFD_MACH_O_LC_LOAD_WEAK_DYLIB},
3522 { "segment_64", BFD_MACH_O_LC_SEGMENT_64},
3523 { "routines_64", BFD_MACH_O_LC_ROUTINES_64},
3524 { "uuid", BFD_MACH_O_LC_UUID},
3525 { "rpath", BFD_MACH_O_LC_RPATH},
3526 { "code_signature", BFD_MACH_O_LC_CODE_SIGNATURE},
3527 { "segment_split_info", BFD_MACH_O_LC_SEGMENT_SPLIT_INFO},
3528 { "reexport_dylib", BFD_MACH_O_LC_REEXPORT_DYLIB},
3529 { "lazy_load_dylib", BFD_MACH_O_LC_LAZY_LOAD_DYLIB},
3530 { "encryption_info", BFD_MACH_O_LC_ENCRYPTION_INFO},
3531 { "dyld_info", BFD_MACH_O_LC_DYLD_INFO},
3532 { "load_upward_lib", BFD_MACH_O_LC_LOAD_UPWARD_DYLIB},
3533 { "version_min_macosx", BFD_MACH_O_LC_VERSION_MIN_MACOSX},
3534 { "version_min_iphoneos", BFD_MACH_O_LC_VERSION_MIN_IPHONEOS},
3535 { "function_starts", BFD_MACH_O_LC_FUNCTION_STARTS},
3536 { "dyld_environment", BFD_MACH_O_LC_DYLD_ENVIRONMENT},
3537 { NULL, 0}
3538 };
3539
3540 /* Get the section type from NAME. Return -1 if NAME is unknown. */
3541
3542 unsigned int
3543 bfd_mach_o_get_section_type_from_name (const char *name)
3544 {
3545 bfd_mach_o_xlat_name *x;
3546
3547 for (x = bfd_mach_o_section_type_name; x->name; x++)
3548 if (strcmp (x->name, name) == 0)
3549 return x->val;
3550 return (unsigned int)-1;
3551 }
3552
3553 /* Get the section attribute from NAME. Return -1 if NAME is unknown. */
3554
3555 unsigned int
3556 bfd_mach_o_get_section_attribute_from_name (const char *name)
3557 {
3558 bfd_mach_o_xlat_name *x;
3559
3560 for (x = bfd_mach_o_section_attribute_name; x->name; x++)
3561 if (strcmp (x->name, name) == 0)
3562 return x->val;
3563 return (unsigned int)-1;
3564 }
3565
3566 static void
3567 bfd_mach_o_print_private_header (bfd *abfd, FILE *file)
3568 {
3569 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
3570 bfd_mach_o_header *h = &mdata->header;
3571
3572 fputs (_("Mach-O header:\n"), file);
3573 fprintf (file, _(" magic : %08lx\n"), h->magic);
3574 fprintf (file, _(" cputype : %08lx (%s)\n"), h->cputype,
3575 bfd_mach_o_get_name (bfd_mach_o_cpu_name, h->cputype));
3576 fprintf (file, _(" cpusubtype: %08lx\n"), h->cpusubtype);
3577 fprintf (file, _(" filetype : %08lx (%s)\n"),
3578 h->filetype,
3579 bfd_mach_o_get_name (bfd_mach_o_filetype_name, h->filetype));
3580 fprintf (file, _(" ncmds : %08lx (%lu)\n"), h->ncmds, h->ncmds);
3581 fprintf (file, _(" sizeofcmds: %08lx\n"), h->sizeofcmds);
3582 fprintf (file, _(" flags : %08lx ("), h->flags);
3583 bfd_mach_o_print_flags (bfd_mach_o_header_flags_name, h->flags, file);
3584 fputs (_(")\n"), file);
3585 fprintf (file, _(" reserved : %08x\n"), h->reserved);
3586 }
3587
3588 static void
3589 bfd_mach_o_print_section_map (bfd *abfd, FILE *file)
3590 {
3591 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
3592 unsigned int i;
3593 unsigned int sec_nbr = 0;
3594
3595 fputs (_("Segments and Sections:\n"), file);
3596 fputs (_(" #: Segment name Section name Address\n"), file);
3597
3598 for (i = 0; i < mdata->header.ncmds; i++)
3599 {
3600 bfd_mach_o_segment_command *seg;
3601 bfd_mach_o_section *sec;
3602
3603 if (mdata->commands[i].type != BFD_MACH_O_LC_SEGMENT
3604 && mdata->commands[i].type != BFD_MACH_O_LC_SEGMENT_64)
3605 continue;
3606
3607 seg = &mdata->commands[i].command.segment;
3608
3609 fprintf (file, "[Segment %-16s ", seg->segname);
3610 fprintf_vma (file, seg->vmaddr);
3611 fprintf (file, "-");
3612 fprintf_vma (file, seg->vmaddr + seg->vmsize - 1);
3613 fputc (' ', file);
3614 fputc (seg->initprot & BFD_MACH_O_PROT_READ ? 'r' : '-', file);
3615 fputc (seg->initprot & BFD_MACH_O_PROT_WRITE ? 'w' : '-', file);
3616 fputc (seg->initprot & BFD_MACH_O_PROT_EXECUTE ? 'x' : '-', file);
3617 fprintf (file, "]\n");
3618
3619 for (sec = seg->sect_head; sec != NULL; sec = sec->next)
3620 {
3621 fprintf (file, "%02u: %-16s %-16s ", ++sec_nbr,
3622 sec->segname, sec->sectname);
3623 fprintf_vma (file, sec->addr);
3624 fprintf (file, " ");
3625 fprintf_vma (file, sec->size);
3626 fprintf (file, " %08lx\n", sec->flags);
3627 }
3628 }
3629 }
3630
3631 static void
3632 bfd_mach_o_print_section (bfd *abfd ATTRIBUTE_UNUSED,
3633 bfd_mach_o_section *sec, FILE *file)
3634 {
3635 fprintf (file, " Section: %-16s %-16s (bfdname: %s)\n",
3636 sec->sectname, sec->segname, sec->bfdsection->name);
3637 fprintf (file, " addr: ");
3638 fprintf_vma (file, sec->addr);
3639 fprintf (file, " size: ");
3640 fprintf_vma (file, sec->size);
3641 fprintf (file, " offset: ");
3642 fprintf_vma (file, sec->offset);
3643 fprintf (file, "\n");
3644 fprintf (file, " align: %ld", sec->align);
3645 fprintf (file, " nreloc: %lu reloff: ", sec->nreloc);
3646 fprintf_vma (file, sec->reloff);
3647 fprintf (file, "\n");
3648 fprintf (file, " flags: %08lx (type: %s", sec->flags,
3649 bfd_mach_o_get_name (bfd_mach_o_section_type_name,
3650 sec->flags & BFD_MACH_O_SECTION_TYPE_MASK));
3651 fprintf (file, " attr: ");
3652 bfd_mach_o_print_flags (bfd_mach_o_section_attribute_name,
3653 sec->flags & BFD_MACH_O_SECTION_ATTRIBUTES_MASK,
3654 file);
3655 fprintf (file, ")\n");
3656 switch (sec->flags & BFD_MACH_O_SECTION_TYPE_MASK)
3657 {
3658 case BFD_MACH_O_S_NON_LAZY_SYMBOL_POINTERS:
3659 case BFD_MACH_O_S_LAZY_SYMBOL_POINTERS:
3660 case BFD_MACH_O_S_SYMBOL_STUBS:
3661 fprintf (file, " first indirect sym: %lu", sec->reserved1);
3662 fprintf (file, " (%u entries)",
3663 bfd_mach_o_section_get_nbr_indirect (abfd, sec));
3664 break;
3665 default:
3666 fprintf (file, " reserved1: 0x%lx", sec->reserved1);
3667 break;
3668 }
3669 switch (sec->flags & BFD_MACH_O_SECTION_TYPE_MASK)
3670 {
3671 case BFD_MACH_O_S_SYMBOL_STUBS:
3672 fprintf (file, " stub size: %lu", sec->reserved2);
3673 break;
3674 default:
3675 fprintf (file, " reserved2: 0x%lx", sec->reserved2);
3676 break;
3677 }
3678 fprintf (file, " reserved3: 0x%lx\n", sec->reserved3);
3679 }
3680
3681 static void
3682 bfd_mach_o_print_segment (bfd *abfd ATTRIBUTE_UNUSED,
3683 bfd_mach_o_load_command *cmd, FILE *file)
3684 {
3685 bfd_mach_o_segment_command *seg = &cmd->command.segment;
3686 bfd_mach_o_section *sec;
3687
3688 fprintf (file, " name: %s\n", *seg->segname ? seg->segname : "*none*");
3689 fprintf (file, " vmaddr: ");
3690 fprintf_vma (file, seg->vmaddr);
3691 fprintf (file, " vmsize: ");
3692 fprintf_vma (file, seg->vmsize);
3693 fprintf (file, "\n");
3694 fprintf (file, " fileoff: ");
3695 fprintf_vma (file, seg->fileoff);
3696 fprintf (file, " filesize: ");
3697 fprintf_vma (file, (bfd_vma)seg->filesize);
3698 fprintf (file, " endoff: ");
3699 fprintf_vma (file, (bfd_vma)(seg->fileoff + seg->filesize));
3700 fprintf (file, "\n");
3701 fprintf (file, " nsects: %lu ", seg->nsects);
3702 fprintf (file, " flags: %lx\n", seg->flags);
3703 for (sec = seg->sect_head; sec != NULL; sec = sec->next)
3704 bfd_mach_o_print_section (abfd, sec, file);
3705 }
3706
3707 static void
3708 bfd_mach_o_print_dysymtab (bfd *abfd ATTRIBUTE_UNUSED,
3709 bfd_mach_o_load_command *cmd, FILE *file)
3710 {
3711 bfd_mach_o_dysymtab_command *dysymtab = &cmd->command.dysymtab;
3712 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
3713 unsigned int i;
3714
3715 fprintf (file, " local symbols: idx: %10lu num: %-8lu",
3716 dysymtab->ilocalsym, dysymtab->nlocalsym);
3717 fprintf (file, " (nxtidx: %lu)\n",
3718 dysymtab->ilocalsym + dysymtab->nlocalsym);
3719 fprintf (file, " external symbols: idx: %10lu num: %-8lu",
3720 dysymtab->iextdefsym, dysymtab->nextdefsym);
3721 fprintf (file, " (nxtidx: %lu)\n",
3722 dysymtab->iextdefsym + dysymtab->nextdefsym);
3723 fprintf (file, " undefined symbols: idx: %10lu num: %-8lu",
3724 dysymtab->iundefsym, dysymtab->nundefsym);
3725 fprintf (file, " (nxtidx: %lu)\n",
3726 dysymtab->iundefsym + dysymtab->nundefsym);
3727 fprintf (file, " table of content: off: 0x%08lx num: %-8lu",
3728 dysymtab->tocoff, dysymtab->ntoc);
3729 fprintf (file, " (endoff: 0x%08lx)\n",
3730 dysymtab->tocoff
3731 + dysymtab->ntoc * BFD_MACH_O_TABLE_OF_CONTENT_SIZE);
3732 fprintf (file, " module table: off: 0x%08lx num: %-8lu",
3733 dysymtab->modtaboff, dysymtab->nmodtab);
3734 fprintf (file, " (endoff: 0x%08lx)\n",
3735 dysymtab->modtaboff + dysymtab->nmodtab
3736 * (mach_o_wide_p (&mdata->header) ?
3737 BFD_MACH_O_DYLIB_MODULE_64_SIZE : BFD_MACH_O_DYLIB_MODULE_SIZE));
3738 fprintf (file, " external reference table: off: 0x%08lx num: %-8lu",
3739 dysymtab->extrefsymoff, dysymtab->nextrefsyms);
3740 fprintf (file, " (endoff: 0x%08lx)\n",
3741 dysymtab->extrefsymoff
3742 + dysymtab->nextrefsyms * BFD_MACH_O_REFERENCE_SIZE);
3743 fprintf (file, " indirect symbol table: off: 0x%08lx num: %-8lu",
3744 dysymtab->indirectsymoff, dysymtab->nindirectsyms);
3745 fprintf (file, " (endoff: 0x%08lx)\n",
3746 dysymtab->indirectsymoff
3747 + dysymtab->nindirectsyms * BFD_MACH_O_INDIRECT_SYMBOL_SIZE);
3748 fprintf (file, " external relocation table: off: 0x%08lx num: %-8lu",
3749 dysymtab->extreloff, dysymtab->nextrel);
3750 fprintf (file, " (endoff: 0x%08lx)\n",
3751 dysymtab->extreloff + dysymtab->nextrel * BFD_MACH_O_RELENT_SIZE);
3752 fprintf (file, " local relocation table: off: 0x%08lx num: %-8lu",
3753 dysymtab->locreloff, dysymtab->nlocrel);
3754 fprintf (file, " (endoff: 0x%08lx)\n",
3755 dysymtab->locreloff + dysymtab->nlocrel * BFD_MACH_O_RELENT_SIZE);
3756
3757 if (dysymtab->ntoc > 0
3758 || dysymtab->nindirectsyms > 0
3759 || dysymtab->nextrefsyms > 0)
3760 {
3761 /* Try to read the symbols to display the toc or indirect symbols. */
3762 bfd_mach_o_read_symtab_symbols (abfd);
3763 }
3764 else if (dysymtab->nmodtab > 0)
3765 {
3766 /* Try to read the strtab to display modules name. */
3767 bfd_mach_o_read_symtab_strtab (abfd);
3768 }
3769
3770 for (i = 0; i < dysymtab->nmodtab; i++)
3771 {
3772 bfd_mach_o_dylib_module *module = &dysymtab->dylib_module[i];
3773 fprintf (file, " module %u:\n", i);
3774 fprintf (file, " name: %lu", module->module_name_idx);
3775 if (mdata->symtab && mdata->symtab->strtab)
3776 fprintf (file, ": %s",
3777 mdata->symtab->strtab + module->module_name_idx);
3778 fprintf (file, "\n");
3779 fprintf (file, " extdefsym: idx: %8lu num: %lu\n",
3780 module->iextdefsym, module->nextdefsym);
3781 fprintf (file, " refsym: idx: %8lu num: %lu\n",
3782 module->irefsym, module->nrefsym);
3783 fprintf (file, " localsym: idx: %8lu num: %lu\n",
3784 module->ilocalsym, module->nlocalsym);
3785 fprintf (file, " extrel: idx: %8lu num: %lu\n",
3786 module->iextrel, module->nextrel);
3787 fprintf (file, " init: idx: %8u num: %u\n",
3788 module->iinit, module->ninit);
3789 fprintf (file, " term: idx: %8u num: %u\n",
3790 module->iterm, module->nterm);
3791 fprintf (file, " objc_module_info: addr: ");
3792 fprintf_vma (file, module->objc_module_info_addr);
3793 fprintf (file, " size: %lu\n", module->objc_module_info_size);
3794 }
3795
3796 if (dysymtab->ntoc > 0)
3797 {
3798 bfd_mach_o_symtab_command *symtab = mdata->symtab;
3799
3800 fprintf (file, " table of content: (symbol/module)\n");
3801 for (i = 0; i < dysymtab->ntoc; i++)
3802 {
3803 bfd_mach_o_dylib_table_of_content *toc = &dysymtab->dylib_toc[i];
3804
3805 fprintf (file, " %4u: ", i);
3806 if (symtab && symtab->symbols && toc->symbol_index < symtab->nsyms)
3807 {
3808 const char *name = symtab->symbols[toc->symbol_index].symbol.name;
3809 fprintf (file, "%s (%lu)", name ? name : "*invalid*",
3810 toc->symbol_index);
3811 }
3812 else
3813 fprintf (file, "%lu", toc->symbol_index);
3814
3815 fprintf (file, " / ");
3816 if (symtab && symtab->strtab
3817 && toc->module_index < dysymtab->nmodtab)
3818 {
3819 bfd_mach_o_dylib_module *mod;
3820 mod = &dysymtab->dylib_module[toc->module_index];
3821 fprintf (file, "%s (%lu)",
3822 symtab->strtab + mod->module_name_idx,
3823 toc->module_index);
3824 }
3825 else
3826 fprintf (file, "%lu", toc->module_index);
3827
3828 fprintf (file, "\n");
3829 }
3830 }
3831
3832 if (dysymtab->nindirectsyms != 0)
3833 {
3834 fprintf (file, " indirect symbols:\n");
3835
3836 for (i = 0; i < mdata->nsects; i++)
3837 {
3838 bfd_mach_o_section *sec = mdata->sections[i];
3839 unsigned int j, first, last;
3840 bfd_mach_o_symtab_command *symtab = mdata->symtab;
3841 bfd_vma addr;
3842 bfd_vma entry_size;
3843
3844 switch (sec->flags & BFD_MACH_O_SECTION_TYPE_MASK)
3845 {
3846 case BFD_MACH_O_S_NON_LAZY_SYMBOL_POINTERS:
3847 case BFD_MACH_O_S_LAZY_SYMBOL_POINTERS:
3848 case BFD_MACH_O_S_SYMBOL_STUBS:
3849 first = sec->reserved1;
3850 last = first + bfd_mach_o_section_get_nbr_indirect (abfd, sec);
3851 addr = sec->addr;
3852 entry_size = bfd_mach_o_section_get_entry_size (abfd, sec);
3853 fprintf (file, " for section %s.%s:\n",
3854 sec->segname, sec->sectname);
3855 for (j = first; j < last; j++)
3856 {
3857 unsigned int isym = dysymtab->indirect_syms[j];
3858
3859 fprintf (file, " ");
3860 fprintf_vma (file, addr);
3861 fprintf (file, " %5u: 0x%08x", j, isym);
3862 if (isym & BFD_MACH_O_INDIRECT_SYMBOL_LOCAL)
3863 fprintf (file, " LOCAL");
3864 if (isym & BFD_MACH_O_INDIRECT_SYMBOL_ABS)
3865 fprintf (file, " ABSOLUTE");
3866 if (symtab && symtab->symbols
3867 && isym < symtab->nsyms
3868 && symtab->symbols[isym].symbol.name)
3869 fprintf (file, " %s", symtab->symbols[isym].symbol.name);
3870 fprintf (file, "\n");
3871 addr += entry_size;
3872 }
3873 break;
3874 default:
3875 break;
3876 }
3877 }
3878 }
3879 if (dysymtab->nextrefsyms > 0)
3880 {
3881 bfd_mach_o_symtab_command *symtab = mdata->symtab;
3882
3883 fprintf (file, " external reference table: (symbol flags)\n");
3884 for (i = 0; i < dysymtab->nextrefsyms; i++)
3885 {
3886 bfd_mach_o_dylib_reference *ref = &dysymtab->ext_refs[i];
3887
3888 fprintf (file, " %4u: %5lu 0x%02lx", i, ref->isym, ref->flags);
3889 if (symtab && symtab->symbols
3890 && ref->isym < symtab->nsyms
3891 && symtab->symbols[ref->isym].symbol.name)
3892 fprintf (file, " %s", symtab->symbols[ref->isym].symbol.name);
3893 fprintf (file, "\n");
3894 }
3895 }
3896
3897 }
3898
3899 static void
3900 bfd_mach_o_print_dyld_info (bfd *abfd ATTRIBUTE_UNUSED,
3901 bfd_mach_o_load_command *cmd, FILE *file)
3902 {
3903 bfd_mach_o_dyld_info_command *info = &cmd->command.dyld_info;
3904
3905 fprintf (file, " rebase: off: 0x%08x size: %-8u\n",
3906 info->rebase_off, info->rebase_size);
3907 fprintf (file, " bind: off: 0x%08x size: %-8u\n",
3908 info->bind_off, info->bind_size);
3909 fprintf (file, " weak bind: off: 0x%08x size: %-8u\n",
3910 info->weak_bind_off, info->weak_bind_size);
3911 fprintf (file, " lazy bind: off: 0x%08x size: %-8u\n",
3912 info->lazy_bind_off, info->lazy_bind_size);
3913 fprintf (file, " export: off: 0x%08x size: %-8u\n",
3914 info->export_off, info->export_size);
3915 }
3916
3917 bfd_boolean
3918 bfd_mach_o_bfd_print_private_bfd_data (bfd *abfd, void * ptr)
3919 {
3920 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
3921 FILE *file = (FILE *) ptr;
3922 unsigned int i;
3923
3924 bfd_mach_o_print_private_header (abfd, file);
3925 fputc ('\n', file);
3926
3927 for (i = 0; i < mdata->header.ncmds; i++)
3928 {
3929 bfd_mach_o_load_command *cmd = &mdata->commands[i];
3930 const char *cmd_name;
3931
3932 cmd_name = bfd_mach_o_get_name_or_null
3933 (bfd_mach_o_load_command_name, cmd->type);
3934 fprintf (file, "Load command ");
3935 if (cmd_name == NULL)
3936 fprintf (file, "0x%02x:", cmd->type);
3937 else
3938 fprintf (file, "%s:", cmd_name);
3939
3940 switch (cmd->type)
3941 {
3942 case BFD_MACH_O_LC_SEGMENT:
3943 case BFD_MACH_O_LC_SEGMENT_64:
3944 bfd_mach_o_print_segment (abfd, cmd, file);
3945 break;
3946 case BFD_MACH_O_LC_UUID:
3947 {
3948 bfd_mach_o_uuid_command *uuid = &cmd->command.uuid;
3949 unsigned int j;
3950
3951 for (j = 0; j < sizeof (uuid->uuid); j ++)
3952 fprintf (file, " %02x", uuid->uuid[j]);
3953 fputc ('\n', file);
3954 }
3955 break;
3956 case BFD_MACH_O_LC_LOAD_DYLIB:
3957 case BFD_MACH_O_LC_LOAD_WEAK_DYLIB:
3958 case BFD_MACH_O_LC_REEXPORT_DYLIB:
3959 case BFD_MACH_O_LC_LOAD_UPWARD_DYLIB:
3960 case BFD_MACH_O_LC_ID_DYLIB:
3961 {
3962 bfd_mach_o_dylib_command *dylib = &cmd->command.dylib;
3963 fprintf (file, " %s\n", dylib->name_str);
3964 fprintf (file, " time stamp: 0x%08lx\n",
3965 dylib->timestamp);
3966 fprintf (file, " current version: 0x%08lx\n",
3967 dylib->current_version);
3968 fprintf (file, " comptibility version: 0x%08lx\n",
3969 dylib->compatibility_version);
3970 break;
3971 }
3972 case BFD_MACH_O_LC_LOAD_DYLINKER:
3973 case BFD_MACH_O_LC_ID_DYLINKER:
3974 fprintf (file, " %s\n", cmd->command.dylinker.name_str);
3975 break;
3976 case BFD_MACH_O_LC_SYMTAB:
3977 {
3978 bfd_mach_o_symtab_command *symtab = &cmd->command.symtab;
3979 fprintf (file,
3980 "\n"
3981 " symoff: 0x%08x nsyms: %8u (endoff: 0x%08x)\n",
3982 symtab->symoff, symtab->nsyms,
3983 symtab->symoff + symtab->nsyms
3984 * (mach_o_wide_p (&mdata->header)
3985 ? BFD_MACH_O_NLIST_64_SIZE : BFD_MACH_O_NLIST_SIZE));
3986 fprintf (file,
3987 " stroff: 0x%08x strsize: %8u (endoff: 0x%08x)\n",
3988 symtab->stroff, symtab->strsize,
3989 symtab->stroff + symtab->strsize);
3990 break;
3991 }
3992 case BFD_MACH_O_LC_DYSYMTAB:
3993 fprintf (file, "\n");
3994 bfd_mach_o_print_dysymtab (abfd, cmd, file);
3995 break;
3996 case BFD_MACH_O_LC_CODE_SIGNATURE:
3997 case BFD_MACH_O_LC_SEGMENT_SPLIT_INFO:
3998 case BFD_MACH_O_LC_FUNCTION_STARTS:
3999 {
4000 bfd_mach_o_linkedit_command *linkedit = &cmd->command.linkedit;
4001 fprintf
4002 (file, "\n"
4003 " dataoff: 0x%08lx datasize: 0x%08lx (endoff: 0x%08lx)\n",
4004 linkedit->dataoff, linkedit->datasize,
4005 linkedit->dataoff + linkedit->datasize);
4006 break;
4007 }
4008 case BFD_MACH_O_LC_SUB_FRAMEWORK:
4009 case BFD_MACH_O_LC_SUB_UMBRELLA:
4010 case BFD_MACH_O_LC_SUB_LIBRARY:
4011 case BFD_MACH_O_LC_SUB_CLIENT:
4012 case BFD_MACH_O_LC_RPATH:
4013 {
4014 bfd_mach_o_str_command *str = &cmd->command.str;
4015 fprintf (file, " %s\n", str->str);
4016 break;
4017 }
4018 case BFD_MACH_O_LC_THREAD:
4019 case BFD_MACH_O_LC_UNIXTHREAD:
4020 {
4021 bfd_mach_o_thread_command *thread = &cmd->command.thread;
4022 unsigned int j;
4023 bfd_mach_o_backend_data *bed = bfd_mach_o_get_backend_data (abfd);
4024
4025 fprintf (file, " nflavours: %lu\n", thread->nflavours);
4026 for (j = 0; j < thread->nflavours; j++)
4027 {
4028 bfd_mach_o_thread_flavour *flavour = &thread->flavours[j];
4029
4030 fprintf (file, " %2u: flavour: 0x%08lx offset: 0x%08lx"
4031 " size: 0x%08lx\n",
4032 j, flavour->flavour, flavour->offset,
4033 flavour->size);
4034 if (bed->_bfd_mach_o_print_thread)
4035 {
4036 char *buf = bfd_malloc (flavour->size);
4037
4038 if (buf
4039 && bfd_seek (abfd, flavour->offset, SEEK_SET) == 0
4040 && (bfd_bread (buf, flavour->size, abfd)
4041 == flavour->size))
4042 (*bed->_bfd_mach_o_print_thread)(abfd, flavour,
4043 file, buf);
4044 free (buf);
4045 }
4046 }
4047 break;
4048 }
4049 case BFD_MACH_O_LC_DYLD_INFO:
4050 fprintf (file, "\n");
4051 bfd_mach_o_print_dyld_info (abfd, cmd, file);
4052 break;
4053 case BFD_MACH_O_LC_VERSION_MIN_MACOSX:
4054 case BFD_MACH_O_LC_VERSION_MIN_IPHONEOS:
4055 {
4056 bfd_mach_o_version_min_command *ver = &cmd->command.version_min;
4057
4058 fprintf (file, " %u.%u.%u\n", ver->rel, ver->maj, ver->min);
4059 }
4060 break;
4061 default:
4062 fprintf (file, "\n");
4063 fprintf (file, " offset: 0x%08lx\n", (unsigned long)cmd->offset);
4064 fprintf (file, " size: 0x%08lx\n", (unsigned long)cmd->len);
4065 break;
4066 }
4067 fputc ('\n', file);
4068 }
4069
4070 bfd_mach_o_print_section_map (abfd, file);
4071
4072 return TRUE;
4073 }
4074
4075 int
4076 bfd_mach_o_core_fetch_environment (bfd *abfd,
4077 unsigned char **rbuf,
4078 unsigned int *rlen)
4079 {
4080 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
4081 unsigned long stackaddr = bfd_mach_o_stack_addr (mdata->header.cputype);
4082 unsigned int i = 0;
4083
4084 for (i = 0; i < mdata->header.ncmds; i++)
4085 {
4086 bfd_mach_o_load_command *cur = &mdata->commands[i];
4087 bfd_mach_o_segment_command *seg = NULL;
4088
4089 if (cur->type != BFD_MACH_O_LC_SEGMENT)
4090 continue;
4091
4092 seg = &cur->command.segment;
4093
4094 if ((seg->vmaddr + seg->vmsize) == stackaddr)
4095 {
4096 unsigned long start = seg->fileoff;
4097 unsigned long end = seg->fileoff + seg->filesize;
4098 unsigned char *buf = bfd_malloc (1024);
4099 unsigned long size = 1024;
4100
4101 for (;;)
4102 {
4103 bfd_size_type nread = 0;
4104 unsigned long offset;
4105 int found_nonnull = 0;
4106
4107 if (size > (end - start))
4108 size = (end - start);
4109
4110 buf = bfd_realloc_or_free (buf, size);
4111 if (buf == NULL)
4112 return -1;
4113
4114 if (bfd_seek (abfd, end - size, SEEK_SET) != 0)
4115 {
4116 free (buf);
4117 return -1;
4118 }
4119
4120 nread = bfd_bread (buf, size, abfd);
4121
4122 if (nread != size)
4123 {
4124 free (buf);
4125 return -1;
4126 }
4127
4128 for (offset = 4; offset <= size; offset += 4)
4129 {
4130 unsigned long val;
4131
4132 val = *((unsigned long *) (buf + size - offset));
4133 if (! found_nonnull)
4134 {
4135 if (val != 0)
4136 found_nonnull = 1;
4137 }
4138 else if (val == 0x0)
4139 {
4140 unsigned long bottom;
4141 unsigned long top;
4142
4143 bottom = seg->fileoff + seg->filesize - offset;
4144 top = seg->fileoff + seg->filesize - 4;
4145 *rbuf = bfd_malloc (top - bottom);
4146 *rlen = top - bottom;
4147
4148 memcpy (*rbuf, buf + size - *rlen, *rlen);
4149 free (buf);
4150 return 0;
4151 }
4152 }
4153
4154 if (size == (end - start))
4155 break;
4156
4157 size *= 2;
4158 }
4159
4160 free (buf);
4161 }
4162 }
4163
4164 return -1;
4165 }
4166
4167 char *
4168 bfd_mach_o_core_file_failing_command (bfd *abfd)
4169 {
4170 unsigned char *buf = NULL;
4171 unsigned int len = 0;
4172 int ret = -1;
4173
4174 ret = bfd_mach_o_core_fetch_environment (abfd, &buf, &len);
4175 if (ret < 0)
4176 return NULL;
4177
4178 return (char *) buf;
4179 }
4180
4181 int
4182 bfd_mach_o_core_file_failing_signal (bfd *abfd ATTRIBUTE_UNUSED)
4183 {
4184 return 0;
4185 }
4186
4187 #define bfd_mach_o_bfd_reloc_type_lookup _bfd_norelocs_bfd_reloc_type_lookup
4188 #define bfd_mach_o_bfd_reloc_name_lookup _bfd_norelocs_bfd_reloc_name_lookup
4189
4190 #define bfd_mach_o_swap_reloc_in NULL
4191 #define bfd_mach_o_swap_reloc_out NULL
4192 #define bfd_mach_o_print_thread NULL
4193
4194 #define TARGET_NAME mach_o_be_vec
4195 #define TARGET_STRING "mach-o-be"
4196 #define TARGET_ARCHITECTURE bfd_arch_unknown
4197 #define TARGET_BIG_ENDIAN 1
4198 #define TARGET_ARCHIVE 0
4199 #include "mach-o-target.c"
4200
4201 #undef TARGET_NAME
4202 #undef TARGET_STRING
4203 #undef TARGET_ARCHITECTURE
4204 #undef TARGET_BIG_ENDIAN
4205 #undef TARGET_ARCHIVE
4206
4207 #define TARGET_NAME mach_o_le_vec
4208 #define TARGET_STRING "mach-o-le"
4209 #define TARGET_ARCHITECTURE bfd_arch_unknown
4210 #define TARGET_BIG_ENDIAN 0
4211 #define TARGET_ARCHIVE 0
4212
4213 #include "mach-o-target.c"
4214
4215 #undef TARGET_NAME
4216 #undef TARGET_STRING
4217 #undef TARGET_ARCHITECTURE
4218 #undef TARGET_BIG_ENDIAN
4219 #undef TARGET_ARCHIVE
4220
4221 /* Not yet handled: creating an archive. */
4222 #define bfd_mach_o_mkarchive _bfd_noarchive_mkarchive
4223
4224 /* Not used. */
4225 #define bfd_mach_o_read_ar_hdr _bfd_noarchive_read_ar_hdr
4226 #define bfd_mach_o_write_ar_hdr _bfd_noarchive_write_ar_hdr
4227 #define bfd_mach_o_slurp_armap _bfd_noarchive_slurp_armap
4228 #define bfd_mach_o_slurp_extended_name_table _bfd_noarchive_slurp_extended_name_table
4229 #define bfd_mach_o_construct_extended_name_table _bfd_noarchive_construct_extended_name_table
4230 #define bfd_mach_o_truncate_arname _bfd_noarchive_truncate_arname
4231 #define bfd_mach_o_write_armap _bfd_noarchive_write_armap
4232 #define bfd_mach_o_get_elt_at_index _bfd_noarchive_get_elt_at_index
4233 #define bfd_mach_o_generic_stat_arch_elt _bfd_noarchive_generic_stat_arch_elt
4234 #define bfd_mach_o_update_armap_timestamp _bfd_noarchive_update_armap_timestamp
4235
4236 #define TARGET_NAME mach_o_fat_vec
4237 #define TARGET_STRING "mach-o-fat"
4238 #define TARGET_ARCHITECTURE bfd_arch_unknown
4239 #define TARGET_BIG_ENDIAN 1
4240 #define TARGET_ARCHIVE 1
4241
4242 #include "mach-o-target.c"
4243
4244 #undef TARGET_NAME
4245 #undef TARGET_STRING
4246 #undef TARGET_ARCHITECTURE
4247 #undef TARGET_BIG_ENDIAN
4248 #undef TARGET_ARCHIVE