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Add -Wshadow to the gcc command line options used when compiling the binutils.
[binutils.git] / bfd / mach-o.c
blobfb66db0d3e14f7f9baa6d11eab8fa104e5daa85e
1 /* Mach-O support for BFD.
2 Copyright 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009
3 Free Software Foundation, Inc.
4
5 This file is part of BFD, the Binary File Descriptor library.
6
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 3 of the License, or
10 (at your option) any later version.
11
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
16
17 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the Free Software
19 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
20 MA 02110-1301, USA. */
21
22 #include "sysdep.h"
23 #include "mach-o.h"
24 #include "bfd.h"
25 #include "libbfd.h"
26 #include "libiberty.h"
27 #include "aout/stab_gnu.h"
28 #include <ctype.h>
29
30 #define bfd_mach_o_object_p bfd_mach_o_gen_object_p
31 #define bfd_mach_o_core_p bfd_mach_o_gen_core_p
32 #define bfd_mach_o_mkobject bfd_false
33
34 #define FILE_ALIGN(off, algn) \
35 (((off) + ((file_ptr) 1 << (algn)) - 1) & ((file_ptr) -1 << (algn)))
36
37 static int bfd_mach_o_read_symtab_symbols (bfd *);
38
39 unsigned int
40 bfd_mach_o_version (bfd *abfd)
41 {
42 bfd_mach_o_data_struct *mdata = NULL;
43
44 BFD_ASSERT (bfd_mach_o_valid (abfd));
45 mdata = bfd_mach_o_get_data (abfd);
46
47 return mdata->header.version;
48 }
49
50 bfd_boolean
51 bfd_mach_o_valid (bfd *abfd)
52 {
53 if (abfd == NULL || abfd->xvec == NULL)
54 return FALSE;
55
56 if (abfd->xvec->flavour != bfd_target_mach_o_flavour)
57 return FALSE;
58
59 if (bfd_mach_o_get_data (abfd) == NULL)
60 return FALSE;
61 return TRUE;
62 }
63
64 static INLINE bfd_boolean
65 mach_o_wide_p (bfd_mach_o_header *header)
66 {
67 switch (header->version)
68 {
69 case 1:
70 return FALSE;
71 case 2:
72 return TRUE;
73 default:
74 BFD_FAIL ();
75 return FALSE;
76 }
77 }
78
79 static INLINE bfd_boolean
80 bfd_mach_o_wide_p (bfd *abfd)
81 {
82 return mach_o_wide_p (&bfd_mach_o_get_data (abfd)->header);
83 }
84
85 /* Tables to translate well known Mach-O segment/section names to bfd
86 names. Use of canonical names (such as .text or .debug_frame) is required
87 by gdb. */
88
89 struct mach_o_section_name_xlat
90 {
91 const char *bfd_name;
92 const char *mach_o_name;
93 };
94
95 static const struct mach_o_section_name_xlat dwarf_section_names_xlat[] =
96 {
97 { ".debug_frame", "__debug_frame" },
98 { ".debug_info", "__debug_info" },
99 { ".debug_abbrev", "__debug_abbrev" },
100 { ".debug_aranges", "__debug_aranges" },
101 { ".debug_macinfo", "__debug_macinfo" },
102 { ".debug_line", "__debug_line" },
103 { ".debug_loc", "__debug_loc" },
104 { ".debug_pubnames", "__debug_pubnames" },
105 { ".debug_pubtypes", "__debug_pubtypes" },
106 { ".debug_str", "__debug_str" },
107 { ".debug_ranges", "__debug_ranges" },
108 { NULL, NULL}
109 };
110
111 static const struct mach_o_section_name_xlat text_section_names_xlat[] =
112 {
113 { ".text", "__text" },
114 { ".const", "__const" },
115 { ".cstring", "__cstring" },
116 { ".eh_frame", "__eh_frame" },
117 { NULL, NULL}
118 };
119
120 static const struct mach_o_section_name_xlat data_section_names_xlat[] =
121 {
122 { ".data", "__data" },
123 { ".bss", "__bss" },
124 { NULL, NULL}
125 };
126
127 struct mach_o_segment_name_xlat
128 {
129 const char *segname;
130 const struct mach_o_section_name_xlat *sections;
131 };
132
133 static const struct mach_o_segment_name_xlat segsec_names_xlat[] =
134 {
135 { "__DWARF", dwarf_section_names_xlat },
136 { "__TEXT", text_section_names_xlat },
137 { "__DATA", data_section_names_xlat },
138 { NULL, NULL }
139 };
140
141
142 /* Mach-O to bfd names. */
143
144 static char *
145 bfd_mach_o_convert_section_name_to_bfd (bfd *abfd, bfd_mach_o_section *section)
146 {
147 const struct mach_o_segment_name_xlat *seg;
148 char *res;
149 unsigned int len;
150 const char *pfx = "";
151
152 for (seg = segsec_names_xlat; seg->segname; seg++)
153 {
154 if (strcmp (seg->segname, section->segname) == 0)
155 {
156 const struct mach_o_section_name_xlat *sec;
157
158 for (sec = seg->sections; sec->mach_o_name; sec++)
159 {
160 if (strcmp (sec->mach_o_name, section->sectname) == 0)
161 {
162 len = strlen (sec->bfd_name);
163 res = bfd_alloc (abfd, len + 1);
164
165 if (res == NULL)
166 return NULL;
167 strcpy (res, sec->bfd_name);
168 return res;
169 }
170 }
171 }
172 }
173
174 len = strlen (section->segname) + 1
175 + strlen (section->sectname) + 1;
176
177 /* Put "LC_SEGMENT." prefix if the segment name is weird (ie doesn't start
178 with an underscore. */
179 if (section->segname[0] != '_')
180 {
181 static const char seg_pfx[] = "LC_SEGMENT.";
182
183 pfx = seg_pfx;
184 len += sizeof (seg_pfx) - 1;
185 }
186
187 res = bfd_alloc (abfd, len);
188 if (res == NULL)
189 return NULL;
190 snprintf (res, len, "%s%s.%s", pfx, section->segname, section->sectname);
191 return res;
192 }
193
194 /* Convert a bfd section name to a Mach-O segment + section name. */
195
196 static void
197 bfd_mach_o_convert_section_name_to_mach_o (bfd *abfd ATTRIBUTE_UNUSED,
198 asection *sect,
199 bfd_mach_o_section *section)
200 {
201 const struct mach_o_segment_name_xlat *seg;
202 const char *name = bfd_get_section_name (abfd, sect);
203 const char *dot;
204 unsigned int len;
205 unsigned int seglen;
206 unsigned int seclen;
207
208 /* List of well known names. They all start with a dot. */
209 if (name[0] == '.')
210 for (seg = segsec_names_xlat; seg->segname; seg++)
211 {
212 const struct mach_o_section_name_xlat *sec;
213
214 for (sec = seg->sections; sec->mach_o_name; sec++)
215 {
216 if (strcmp (sec->bfd_name, name) == 0)
217 {
218 strcpy (section->segname, seg->segname);
219 strcpy (section->sectname, sec->mach_o_name);
220 return;
221 }
222 }
223 }
224
225 /* Strip LC_SEGMENT. prefix. */
226 if (strncmp (name, "LC_SEGMENT.", 11) == 0)
227 name += 11;
228
229 /* Find a dot. */
230 dot = strchr (name, '.');
231 len = strlen (name);
232
233 /* Try to split name into segment and section names. */
234 if (dot && dot != name)
235 {
236 seglen = dot - name;
237 seclen = len - (dot + 1 - name);
238
239 if (seglen < 16 && seclen < 16)
240 {
241 memcpy (section->segname, name, seglen);
242 section->segname[seglen] = 0;
243 memcpy (section->sectname, dot + 1, seclen);
244 section->sectname[seclen] = 0;
245 return;
246 }
247 }
248
249 if (len > 16)
250 len = 16;
251 memcpy (section->segname, name, len);
252 section->segname[len] = 0;
253 memcpy (section->sectname, name, len);
254 section->sectname[len] = 0;
255 }
256
257 /* Return the size of an entry for section SEC.
258 Must be called only for symbol pointer section and symbol stubs
259 sections. */
260
261 static unsigned int
262 bfd_mach_o_section_get_entry_size (bfd *abfd, bfd_mach_o_section *sec)
263 {
264 switch (sec->flags & BFD_MACH_O_SECTION_TYPE_MASK)
265 {
266 case BFD_MACH_O_S_NON_LAZY_SYMBOL_POINTERS:
267 case BFD_MACH_O_S_LAZY_SYMBOL_POINTERS:
268 return bfd_mach_o_wide_p (abfd) ? 8 : 4;
269 case BFD_MACH_O_S_SYMBOL_STUBS:
270 return sec->reserved2;
271 default:
272 BFD_FAIL ();
273 return 0;
274 }
275 }
276
277 /* Return the number of indirect symbols for a section.
278 Must be called only for symbol pointer section and symbol stubs
279 sections. */
280
281 static unsigned int
282 bfd_mach_o_section_get_nbr_indirect (bfd *abfd, bfd_mach_o_section *sec)
283 {
284 unsigned int elsz;
285
286 elsz = bfd_mach_o_section_get_entry_size (abfd, sec);
287 if (elsz == 0)
288 return 0;
289 else
290 return sec->size / elsz;
291 }
292
293
294 /* Copy any private info we understand from the input symbol
295 to the output symbol. */
296
297 bfd_boolean
298 bfd_mach_o_bfd_copy_private_symbol_data (bfd *ibfd ATTRIBUTE_UNUSED,
299 asymbol *isymbol ATTRIBUTE_UNUSED,
300 bfd *obfd ATTRIBUTE_UNUSED,
301 asymbol *osymbol ATTRIBUTE_UNUSED)
302 {
303 return TRUE;
304 }
305
306 /* Copy any private info we understand from the input section
307 to the output section. */
308
309 bfd_boolean
310 bfd_mach_o_bfd_copy_private_section_data (bfd *ibfd ATTRIBUTE_UNUSED,
311 asection *isection ATTRIBUTE_UNUSED,
312 bfd *obfd ATTRIBUTE_UNUSED,
313 asection *osection ATTRIBUTE_UNUSED)
314 {
315 return TRUE;
316 }
317
318 /* Copy any private info we understand from the input bfd
319 to the output bfd. */
320
321 bfd_boolean
322 bfd_mach_o_bfd_copy_private_bfd_data (bfd *ibfd, bfd *obfd)
323 {
324 if (bfd_get_flavour (ibfd) != bfd_target_mach_o_flavour
325 || bfd_get_flavour (obfd) != bfd_target_mach_o_flavour)
326 return TRUE;
327
328 BFD_ASSERT (bfd_mach_o_valid (ibfd));
329 BFD_ASSERT (bfd_mach_o_valid (obfd));
330
331 /* FIXME: copy commands. */
332
333 return TRUE;
334 }
335
336 /* Count the total number of symbols. */
337
338 static long
339 bfd_mach_o_count_symbols (bfd *abfd)
340 {
341 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
342
343 if (mdata->symtab == NULL)
344 return 0;
345 return mdata->symtab->nsyms;
346 }
347
348 long
349 bfd_mach_o_get_symtab_upper_bound (bfd *abfd)
350 {
351 long nsyms = bfd_mach_o_count_symbols (abfd);
352
353 return ((nsyms + 1) * sizeof (asymbol *));
354 }
355
356 long
357 bfd_mach_o_canonicalize_symtab (bfd *abfd, asymbol **alocation)
358 {
359 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
360 long nsyms = bfd_mach_o_count_symbols (abfd);
361 bfd_mach_o_symtab_command *sym = mdata->symtab;
362 unsigned long j;
363
364 if (nsyms < 0)
365 return nsyms;
366
367 if (bfd_mach_o_read_symtab_symbols (abfd) != 0)
368 {
369 fprintf (stderr,
370 "bfd_mach_o_canonicalize_symtab: unable to load symbols\n");
371 return 0;
372 }
373
374 BFD_ASSERT (sym->symbols != NULL);
375
376 for (j = 0; j < sym->nsyms; j++)
377 alocation[j] = &sym->symbols[j].symbol;
378
379 alocation[j] = NULL;
380
381 return nsyms;
382 }
383
384 long
385 bfd_mach_o_get_synthetic_symtab (bfd *abfd,
386 long symcount ATTRIBUTE_UNUSED,
387 asymbol **syms ATTRIBUTE_UNUSED,
388 long dynsymcount ATTRIBUTE_UNUSED,
389 asymbol **dynsyms ATTRIBUTE_UNUSED,
390 asymbol **ret)
391 {
392 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
393 bfd_mach_o_dysymtab_command *dysymtab = mdata->dysymtab;
394 bfd_mach_o_symtab_command *symtab = mdata->symtab;
395 asymbol *s;
396 unsigned long count, i, j, n;
397 size_t size;
398 char *names;
399 char *nul_name;
400
401 *ret = NULL;
402
403 if (dysymtab == NULL || symtab == NULL || symtab->symbols == NULL)
404 return 0;
405
406 if (dysymtab->nindirectsyms == 0)
407 return 0;
408
409 count = dysymtab->nindirectsyms;
410 size = count * sizeof (asymbol) + 1;
411
412 for (j = 0; j < count; j++)
413 {
414 unsigned int isym = dysymtab->indirect_syms[j];
415
416 if (isym < symtab->nsyms && symtab->symbols[isym].symbol.name)
417 size += strlen (symtab->symbols[isym].symbol.name) + sizeof ("$stub");
418 }
419
420 s = *ret = (asymbol *) bfd_malloc (size);
421 if (s == NULL)
422 return -1;
423 names = (char *) (s + count);
424 nul_name = names;
425 *names++ = 0;
426
427 n = 0;
428 for (i = 0; i < mdata->nsects; i++)
429 {
430 bfd_mach_o_section *sec = mdata->sections[i];
431 unsigned int first, last;
432 bfd_vma addr;
433 bfd_vma entry_size;
434
435 switch (sec->flags & BFD_MACH_O_SECTION_TYPE_MASK)
436 {
437 case BFD_MACH_O_S_NON_LAZY_SYMBOL_POINTERS:
438 case BFD_MACH_O_S_LAZY_SYMBOL_POINTERS:
439 case BFD_MACH_O_S_SYMBOL_STUBS:
440 first = sec->reserved1;
441 last = first + bfd_mach_o_section_get_nbr_indirect (abfd, sec);
442 addr = sec->addr;
443 entry_size = bfd_mach_o_section_get_entry_size (abfd, sec);
444 for (j = first; j < last; j++)
445 {
446 unsigned int isym = dysymtab->indirect_syms[j];
447
448 s->flags = BSF_GLOBAL | BSF_SYNTHETIC;
449 s->section = sec->bfdsection;
450 s->value = addr - sec->addr;
451 s->udata.p = NULL;
452
453 if (isym < symtab->nsyms
454 && symtab->symbols[isym].symbol.name)
455 {
456 const char *sym = symtab->symbols[isym].symbol.name;
457 size_t len;
458
459 s->name = names;
460 len = strlen (sym);
461 memcpy (names, sym, len);
462 names += len;
463 memcpy (names, "$stub", sizeof ("$stub"));
464 names += sizeof ("$stub");
465 }
466 else
467 s->name = nul_name;
468
469 addr += entry_size;
470 s++;
471 n++;
472 }
473 break;
474 default:
475 break;
476 }
477 }
478
479 return n;
480 }
481
482 void
483 bfd_mach_o_get_symbol_info (bfd *abfd ATTRIBUTE_UNUSED,
484 asymbol *symbol,
485 symbol_info *ret)
486 {
487 bfd_symbol_info (symbol, ret);
488 }
489
490 void
491 bfd_mach_o_print_symbol (bfd *abfd,
492 void * afile,
493 asymbol *symbol,
494 bfd_print_symbol_type how)
495 {
496 FILE *file = (FILE *) afile;
497 const char *name;
498 bfd_mach_o_asymbol *asym = (bfd_mach_o_asymbol *)symbol;
499
500 switch (how)
501 {
502 case bfd_print_symbol_name:
503 fprintf (file, "%s", symbol->name);
504 break;
505 default:
506 bfd_print_symbol_vandf (abfd, (void *) file, symbol);
507 if (asym->n_type & BFD_MACH_O_N_STAB)
508 name = bfd_get_stab_name (asym->n_type);
509 else
510 switch (asym->n_type & BFD_MACH_O_N_TYPE)
511 {
512 case BFD_MACH_O_N_UNDF:
513 name = "UND";
514 break;
515 case BFD_MACH_O_N_ABS:
516 name = "ABS";
517 break;
518 case BFD_MACH_O_N_INDR:
519 name = "INDR";
520 break;
521 case BFD_MACH_O_N_PBUD:
522 name = "PBUD";
523 break;
524 case BFD_MACH_O_N_SECT:
525 name = "SECT";
526 break;
527 default:
528 name = "???";
529 break;
530 }
531 if (name == NULL)
532 name = "";
533 fprintf (file, " %02x %-6s %02x %04x",
534 asym->n_type, name, asym->n_sect, asym->n_desc);
535 if ((asym->n_type & BFD_MACH_O_N_STAB) == 0
536 && (asym->n_type & BFD_MACH_O_N_TYPE) == BFD_MACH_O_N_SECT)
537 fprintf (file, " %-5s", symbol->section->name);
538 fprintf (file, " %s", symbol->name);
539 }
540 }
541
542 static void
543 bfd_mach_o_convert_architecture (bfd_mach_o_cpu_type mtype,
544 bfd_mach_o_cpu_subtype msubtype ATTRIBUTE_UNUSED,
545 enum bfd_architecture *type,
546 unsigned long *subtype)
547 {
548 *subtype = bfd_arch_unknown;
549
550 switch (mtype)
551 {
552 case BFD_MACH_O_CPU_TYPE_VAX: *type = bfd_arch_vax; break;
553 case BFD_MACH_O_CPU_TYPE_MC680x0: *type = bfd_arch_m68k; break;
554 case BFD_MACH_O_CPU_TYPE_I386:
555 *type = bfd_arch_i386;
556 *subtype = bfd_mach_i386_i386;
557 break;
558 case BFD_MACH_O_CPU_TYPE_X86_64:
559 *type = bfd_arch_i386;
560 *subtype = bfd_mach_x86_64;
561 break;
562 case BFD_MACH_O_CPU_TYPE_MIPS: *type = bfd_arch_mips; break;
563 case BFD_MACH_O_CPU_TYPE_MC98000: *type = bfd_arch_m98k; break;
564 case BFD_MACH_O_CPU_TYPE_HPPA: *type = bfd_arch_hppa; break;
565 case BFD_MACH_O_CPU_TYPE_ARM: *type = bfd_arch_arm; break;
566 case BFD_MACH_O_CPU_TYPE_MC88000: *type = bfd_arch_m88k; break;
567 case BFD_MACH_O_CPU_TYPE_SPARC:
568 *type = bfd_arch_sparc;
569 *subtype = bfd_mach_sparc;
570 break;
571 case BFD_MACH_O_CPU_TYPE_I860: *type = bfd_arch_i860; break;
572 case BFD_MACH_O_CPU_TYPE_ALPHA: *type = bfd_arch_alpha; break;
573 case BFD_MACH_O_CPU_TYPE_POWERPC:
574 *type = bfd_arch_powerpc;
575 *subtype = bfd_mach_ppc;
576 break;
577 case BFD_MACH_O_CPU_TYPE_POWERPC_64:
578 *type = bfd_arch_powerpc;
579 *subtype = bfd_mach_ppc64;
580 break;
581 default:
582 *type = bfd_arch_unknown;
583 break;
584 }
585 }
586
587 static bfd_boolean
588 bfd_mach_o_write_header (bfd *abfd, bfd_mach_o_header *header)
589 {
590 unsigned char buf[32];
591 unsigned int size;
592
593 size = mach_o_wide_p (header) ?
594 BFD_MACH_O_HEADER_64_SIZE : BFD_MACH_O_HEADER_SIZE;
595
596 bfd_h_put_32 (abfd, header->magic, buf + 0);
597 bfd_h_put_32 (abfd, header->cputype, buf + 4);
598 bfd_h_put_32 (abfd, header->cpusubtype, buf + 8);
599 bfd_h_put_32 (abfd, header->filetype, buf + 12);
600 bfd_h_put_32 (abfd, header->ncmds, buf + 16);
601 bfd_h_put_32 (abfd, header->sizeofcmds, buf + 20);
602 bfd_h_put_32 (abfd, header->flags, buf + 24);
603
604 if (mach_o_wide_p (header))
605 bfd_h_put_32 (abfd, header->reserved, buf + 28);
606
607 if (bfd_seek (abfd, 0, SEEK_SET) != 0
608 || bfd_bwrite ((void *) buf, size, abfd) != size)
609 return FALSE;
610
611 return TRUE;
612 }
613
614 static int
615 bfd_mach_o_write_thread (bfd *abfd, bfd_mach_o_load_command *command)
616 {
617 bfd_mach_o_thread_command *cmd = &command->command.thread;
618 unsigned int i;
619 unsigned char buf[8];
620 unsigned int offset;
621 unsigned int nflavours;
622
623 BFD_ASSERT ((command->type == BFD_MACH_O_LC_THREAD)
624 || (command->type == BFD_MACH_O_LC_UNIXTHREAD));
625
626 offset = 8;
627 nflavours = 0;
628 for (i = 0; i < cmd->nflavours; i++)
629 {
630 BFD_ASSERT ((cmd->flavours[i].size % 4) == 0);
631 BFD_ASSERT (cmd->flavours[i].offset == (command->offset + offset + 8));
632
633 bfd_h_put_32 (abfd, cmd->flavours[i].flavour, buf);
634 bfd_h_put_32 (abfd, (cmd->flavours[i].size / 4), buf + 4);
635
636 if (bfd_seek (abfd, command->offset + offset, SEEK_SET) != 0
637 || bfd_bwrite ((void *) buf, 8, abfd) != 8)
638 return -1;
639
640 offset += cmd->flavours[i].size + 8;
641 }
642
643 return 0;
644 }
645
646 long
647 bfd_mach_o_get_reloc_upper_bound (bfd *abfd ATTRIBUTE_UNUSED,
648 asection *asect)
649 {
650 return (asect->reloc_count + 1) * sizeof (arelent *);
651 }
652
653 static int
654 bfd_mach_o_canonicalize_one_reloc (bfd *abfd, char *buf,
655 arelent *res, asymbol **syms)
656 {
657 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
658 bfd_mach_o_backend_data *bed = bfd_mach_o_get_backend_data (abfd);
659 bfd_mach_o_reloc_info reloc;
660 bfd_vma addr;
661 bfd_vma symnum;
662 asymbol **sym;
663
664 addr = bfd_get_32 (abfd, buf + 0);
665 symnum = bfd_get_32 (abfd, buf + 4);
666
667 if (addr & BFD_MACH_O_SR_SCATTERED)
668 {
669 unsigned int j;
670
671 /* Scattered relocation.
672 Extract section and offset from r_value. */
673 res->sym_ptr_ptr = NULL;
674 res->addend = 0;
675 for (j = 0; j < mdata->nsects; j++)
676 {
677 bfd_mach_o_section *sect = mdata->sections[j];
678 if (symnum >= sect->addr && symnum < sect->addr + sect->size)
679 {
680 res->sym_ptr_ptr = sect->bfdsection->symbol_ptr_ptr;
681 res->addend = symnum - sect->addr;
682 break;
683 }
684 }
685 res->address = BFD_MACH_O_GET_SR_ADDRESS (addr);
686 reloc.r_type = BFD_MACH_O_GET_SR_TYPE (addr);
687 reloc.r_length = BFD_MACH_O_GET_SR_LENGTH (addr);
688 reloc.r_pcrel = addr & BFD_MACH_O_SR_PCREL;
689 reloc.r_scattered = 1;
690 }
691 else
692 {
693 unsigned int num = BFD_MACH_O_GET_R_SYMBOLNUM (symnum);
694 res->addend = 0;
695 res->address = addr;
696 if (symnum & BFD_MACH_O_R_EXTERN)
697 sym = syms + num;
698 else
699 {
700 BFD_ASSERT (num != 0);
701 BFD_ASSERT (num <= mdata->nsects);
702 sym = mdata->sections[num - 1]->bfdsection->symbol_ptr_ptr;
703 }
704 res->sym_ptr_ptr = sym;
705 reloc.r_type = BFD_MACH_O_GET_R_TYPE (symnum);
706 reloc.r_length = BFD_MACH_O_GET_R_LENGTH (symnum);
707 reloc.r_pcrel = (symnum & BFD_MACH_O_R_PCREL) ? 1 : 0;
708 reloc.r_scattered = 0;
709 }
710
711 if (!(*bed->_bfd_mach_o_swap_reloc_in)(res, &reloc))
712 return -1;
713 return 0;
714 }
715
716 static int
717 bfd_mach_o_canonicalize_relocs (bfd *abfd, unsigned long filepos,
718 unsigned long count,
719 arelent *res, asymbol **syms)
720 {
721 unsigned long i;
722 char *native_relocs;
723 bfd_size_type native_size;
724
725 /* Allocate and read relocs. */
726 native_size = count * BFD_MACH_O_RELENT_SIZE;
727 native_relocs = bfd_malloc (native_size);
728 if (native_relocs == NULL)
729 return -1;
730
731 if (bfd_seek (abfd, filepos, SEEK_SET) != 0
732 || bfd_bread (native_relocs, native_size, abfd) != native_size)
733 goto err;
734
735 for (i = 0; i < count; i++)
736 {
737 char *buf = native_relocs + BFD_MACH_O_RELENT_SIZE * i;
738
739 if (bfd_mach_o_canonicalize_one_reloc (abfd, buf, &res[i], syms) < 0)
740 goto err;
741 }
742 free (native_relocs);
743 return i;
744 err:
745 free (native_relocs);
746 return -1;
747 }
748
749 long
750 bfd_mach_o_canonicalize_reloc (bfd *abfd, asection *asect,
751 arelent **rels, asymbol **syms)
752 {
753 bfd_mach_o_backend_data *bed = bfd_mach_o_get_backend_data (abfd);
754 unsigned long i;
755 arelent *res;
756
757 if (asect->reloc_count == 0)
758 return 0;
759
760 /* No need to go further if we don't know how to read relocs. */
761 if (bed->_bfd_mach_o_swap_reloc_in == NULL)
762 return 0;
763
764 res = bfd_malloc (asect->reloc_count * sizeof (arelent));
765 if (res == NULL)
766 return -1;
767
768 if (bfd_mach_o_canonicalize_relocs (abfd, asect->rel_filepos,
769 asect->reloc_count, res, syms) < 0)
770 {
771 free (res);
772 return -1;
773 }
774
775 for (i = 0; i < asect->reloc_count; i++)
776 rels[i] = &res[i];
777 rels[i] = NULL;
778 asect->relocation = res;
779
780 return i;
781 }
782
783 long
784 bfd_mach_o_get_dynamic_reloc_upper_bound (bfd *abfd)
785 {
786 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
787
788 if (mdata->dysymtab == NULL)
789 return 1;
790 return (mdata->dysymtab->nextrel + mdata->dysymtab->nlocrel)
791 * sizeof (arelent *);
792 }
793
794 long
795 bfd_mach_o_canonicalize_dynamic_reloc (bfd *abfd, arelent **rels,
796 struct bfd_symbol **syms)
797 {
798 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
799 bfd_mach_o_dysymtab_command *dysymtab = mdata->dysymtab;
800 bfd_mach_o_backend_data *bed = bfd_mach_o_get_backend_data (abfd);
801 unsigned long i;
802 arelent *res;
803
804 if (dysymtab == NULL)
805 return 0;
806 if (dysymtab->nextrel == 0 && dysymtab->nlocrel == 0)
807 return 0;
808
809 /* No need to go further if we don't know how to read relocs. */
810 if (bed->_bfd_mach_o_swap_reloc_in == NULL)
811 return 0;
812
813 res = bfd_malloc ((dysymtab->nextrel + dysymtab->nlocrel) * sizeof (arelent));
814 if (res == NULL)
815 return -1;
816
817 if (bfd_mach_o_canonicalize_relocs (abfd, dysymtab->extreloff,
818 dysymtab->nextrel, res, syms) < 0)
819 {
820 free (res);
821 return -1;
822 }
823
824 if (bfd_mach_o_canonicalize_relocs (abfd, dysymtab->locreloff,
825 dysymtab->nlocrel,
826 res + dysymtab->nextrel, syms) < 0)
827 {
828 free (res);
829 return -1;
830 }
831
832 for (i = 0; i < dysymtab->nextrel + dysymtab->nlocrel; i++)
833 rels[i] = &res[i];
834 rels[i] = NULL;
835 return i;
836 }
837
838 static bfd_boolean
839 bfd_mach_o_write_relocs (bfd *abfd, bfd_mach_o_section *section)
840 {
841 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
842 unsigned int i;
843 arelent **entries;
844 asection *sec;
845 bfd_mach_o_backend_data *bed = bfd_mach_o_get_backend_data (abfd);
846
847 sec = section->bfdsection;
848 if (sec->reloc_count == 0)
849 return TRUE;
850
851 if (bed->_bfd_mach_o_swap_reloc_out == NULL)
852 return TRUE;
853
854 /* Allocate relocation room. */
855 mdata->filelen = FILE_ALIGN(mdata->filelen, 2);
856 section->nreloc = sec->reloc_count;
857 sec->rel_filepos = mdata->filelen;
858 section->reloff = sec->rel_filepos;
859 mdata->filelen += sec->reloc_count * BFD_MACH_O_RELENT_SIZE;
860
861 if (bfd_seek (abfd, section->reloff, SEEK_SET) != 0)
862 return FALSE;
863
864 /* Convert and write. */
865 entries = section->bfdsection->orelocation;
866 for (i = 0; i < section->nreloc; i++)
867 {
868 arelent *rel = entries[i];
869 char buf[8];
870 bfd_mach_o_reloc_info info, *pinfo = &info;
871
872 /* Convert relocation to an intermediate representation. */
873 if (!(*bed->_bfd_mach_o_swap_reloc_out) (rel, pinfo))
874 return FALSE;
875
876 /* Lower the relocation info. */
877 if (pinfo->r_scattered)
878 {
879 unsigned long v;
880
881 v = BFD_MACH_O_SR_SCATTERED
882 | (pinfo->r_pcrel ? BFD_MACH_O_SR_PCREL : 0)
883 | BFD_MACH_O_SET_SR_LENGTH(pinfo->r_length)
884 | BFD_MACH_O_SET_SR_TYPE(pinfo->r_type)
885 | BFD_MACH_O_SET_SR_ADDRESS(pinfo->r_address);
886 bfd_put_32 (abfd, v, buf);
887 bfd_put_32 (abfd, pinfo->r_value, buf + 4);
888 }
889 else
890 {
891 unsigned long v;
892
893 bfd_put_32 (abfd, pinfo->r_address, buf);
894 v = BFD_MACH_O_SET_R_SYMBOLNUM (pinfo->r_value)
895 | (pinfo->r_pcrel ? BFD_MACH_O_R_PCREL : 0)
896 | BFD_MACH_O_SET_R_LENGTH (pinfo->r_length)
897 | (pinfo->r_extern ? BFD_MACH_O_R_EXTERN : 0)
898 | BFD_MACH_O_SET_R_TYPE (pinfo->r_type);
899 bfd_put_32 (abfd, v, buf + 4);
900 }
901
902 if (bfd_bwrite ((void *) buf, BFD_MACH_O_RELENT_SIZE, abfd)
903 != BFD_MACH_O_RELENT_SIZE)
904 return FALSE;
905 }
906 return TRUE;
907 }
908
909 static int
910 bfd_mach_o_write_section_32 (bfd *abfd, bfd_mach_o_section *section)
911 {
912 unsigned char buf[BFD_MACH_O_SECTION_SIZE];
913
914 memcpy (buf, section->sectname, 16);
915 memcpy (buf + 16, section->segname, 16);
916 bfd_h_put_32 (abfd, section->addr, buf + 32);
917 bfd_h_put_32 (abfd, section->size, buf + 36);
918 bfd_h_put_32 (abfd, section->offset, buf + 40);
919 bfd_h_put_32 (abfd, section->align, buf + 44);
920 bfd_h_put_32 (abfd, section->reloff, buf + 48);
921 bfd_h_put_32 (abfd, section->nreloc, buf + 52);
922 bfd_h_put_32 (abfd, section->flags, buf + 56);
923 bfd_h_put_32 (abfd, section->reserved1, buf + 60);
924 bfd_h_put_32 (abfd, section->reserved2, buf + 64);
925
926 if (bfd_bwrite ((void *) buf, BFD_MACH_O_SECTION_SIZE, abfd)
927 != BFD_MACH_O_SECTION_SIZE)
928 return -1;
929
930 return 0;
931 }
932
933 static int
934 bfd_mach_o_write_section_64 (bfd *abfd, bfd_mach_o_section *section)
935 {
936 unsigned char buf[BFD_MACH_O_SECTION_64_SIZE];
937
938 memcpy (buf, section->sectname, 16);
939 memcpy (buf + 16, section->segname, 16);
940 bfd_h_put_64 (abfd, section->addr, buf + 32);
941 bfd_h_put_64 (abfd, section->size, buf + 40);
942 bfd_h_put_32 (abfd, section->offset, buf + 48);
943 bfd_h_put_32 (abfd, section->align, buf + 52);
944 bfd_h_put_32 (abfd, section->reloff, buf + 56);
945 bfd_h_put_32 (abfd, section->nreloc, buf + 60);
946 bfd_h_put_32 (abfd, section->flags, buf + 64);
947 bfd_h_put_32 (abfd, section->reserved1, buf + 68);
948 bfd_h_put_32 (abfd, section->reserved2, buf + 72);
949 bfd_h_put_32 (abfd, section->reserved3, buf + 76);
950
951 if (bfd_bwrite ((void *) buf, BFD_MACH_O_SECTION_64_SIZE, abfd)
952 != BFD_MACH_O_SECTION_64_SIZE)
953 return -1;
954
955 return 0;
956 }
957
958 static int
959 bfd_mach_o_write_segment_32 (bfd *abfd, bfd_mach_o_load_command *command)
960 {
961 unsigned char buf[BFD_MACH_O_LC_SEGMENT_SIZE];
962 bfd_mach_o_segment_command *seg = &command->command.segment;
963 unsigned long i;
964
965 BFD_ASSERT (command->type == BFD_MACH_O_LC_SEGMENT);
966
967 for (i = 0; i < seg->nsects; i++)
968 if (!bfd_mach_o_write_relocs (abfd, &seg->sections[i]))
969 return -1;
970
971 memcpy (buf, seg->segname, 16);
972 bfd_h_put_32 (abfd, seg->vmaddr, buf + 16);
973 bfd_h_put_32 (abfd, seg->vmsize, buf + 20);
974 bfd_h_put_32 (abfd, seg->fileoff, buf + 24);
975 bfd_h_put_32 (abfd, seg->filesize, buf + 28);
976 bfd_h_put_32 (abfd, seg->maxprot, buf + 32);
977 bfd_h_put_32 (abfd, seg->initprot, buf + 36);
978 bfd_h_put_32 (abfd, seg->nsects, buf + 40);
979 bfd_h_put_32 (abfd, seg->flags, buf + 44);
980
981 if (bfd_seek (abfd, command->offset + 8, SEEK_SET) != 0
982 || (bfd_bwrite ((void *) buf, BFD_MACH_O_LC_SEGMENT_SIZE - 8, abfd)
983 != BFD_MACH_O_LC_SEGMENT_SIZE - 8))
984 return -1;
985
986 for (i = 0; i < seg->nsects; i++)
987 if (bfd_mach_o_write_section_32 (abfd, &seg->sections[i]))
988 return -1;
989
990 return 0;
991 }
992
993 static int
994 bfd_mach_o_write_segment_64 (bfd *abfd, bfd_mach_o_load_command *command)
995 {
996 unsigned char buf[BFD_MACH_O_LC_SEGMENT_64_SIZE];
997 bfd_mach_o_segment_command *seg = &command->command.segment;
998 unsigned long i;
999
1000 BFD_ASSERT (command->type == BFD_MACH_O_LC_SEGMENT_64);
1001
1002 for (i = 0; i < seg->nsects; i++)
1003 if (!bfd_mach_o_write_relocs (abfd, &seg->sections[i]))
1004 return -1;
1005
1006 memcpy (buf, seg->segname, 16);
1007 bfd_h_put_64 (abfd, seg->vmaddr, buf + 16);
1008 bfd_h_put_64 (abfd, seg->vmsize, buf + 24);
1009 bfd_h_put_64 (abfd, seg->fileoff, buf + 32);
1010 bfd_h_put_64 (abfd, seg->filesize, buf + 40);
1011 bfd_h_put_32 (abfd, seg->maxprot, buf + 48);
1012 bfd_h_put_32 (abfd, seg->initprot, buf + 52);
1013 bfd_h_put_32 (abfd, seg->nsects, buf + 56);
1014 bfd_h_put_32 (abfd, seg->flags, buf + 60);
1015
1016 if (bfd_seek (abfd, command->offset + 8, SEEK_SET) != 0
1017 || (bfd_bwrite ((void *) buf, BFD_MACH_O_LC_SEGMENT_64_SIZE - 8, abfd)
1018 != BFD_MACH_O_LC_SEGMENT_64_SIZE - 8))
1019 return -1;
1020
1021 for (i = 0; i < seg->nsects; i++)
1022 if (bfd_mach_o_write_section_64 (abfd, &seg->sections[i]))
1023 return -1;
1024
1025 return 0;
1026 }
1027
1028 static bfd_boolean
1029 bfd_mach_o_write_symtab (bfd *abfd, bfd_mach_o_load_command *command)
1030 {
1031 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
1032 bfd_mach_o_symtab_command *sym = &command->command.symtab;
1033 unsigned char buf[16];
1034 unsigned long i;
1035 unsigned int wide = bfd_mach_o_wide_p (abfd);
1036 unsigned int symlen = wide ? BFD_MACH_O_NLIST_64_SIZE : BFD_MACH_O_NLIST_SIZE;
1037 struct bfd_strtab_hash *strtab;
1038 asymbol **symbols = bfd_get_outsymbols (abfd);
1039
1040 BFD_ASSERT (command->type == BFD_MACH_O_LC_SYMTAB);
1041
1042 /* Write the symbols first. */
1043 mdata->filelen = FILE_ALIGN(mdata->filelen, wide ? 3 : 2);
1044 sym->symoff = mdata->filelen;
1045 if (bfd_seek (abfd, sym->symoff, SEEK_SET) != 0)
1046 return FALSE;
1047
1048 sym->nsyms = bfd_get_symcount (abfd);
1049 mdata->filelen += sym->nsyms * symlen;
1050
1051 strtab = _bfd_stringtab_init ();
1052 if (strtab == NULL)
1053 return FALSE;
1054
1055 for (i = 0; i < sym->nsyms; i++)
1056 {
1057 bfd_size_type str_index;
1058 bfd_mach_o_asymbol *s = (bfd_mach_o_asymbol *)symbols[i];
1059
1060 /* Compute name index. */
1061 /* An index of 0 always means the empty string. */
1062 if (s->symbol.name == 0 || s->symbol.name[0] == '\0')
1063 str_index = 0;
1064 else
1065 {
1066 str_index = _bfd_stringtab_add (strtab, s->symbol.name, TRUE, FALSE);
1067 if (str_index == (bfd_size_type) -1)
1068 goto err;
1069 }
1070 bfd_h_put_32 (abfd, str_index, buf);
1071 bfd_h_put_8 (abfd, s->n_type, buf + 4);
1072 bfd_h_put_8 (abfd, s->n_sect, buf + 5);
1073 bfd_h_put_16 (abfd, s->n_desc, buf + 6);
1074 if (wide)
1075 bfd_h_put_64 (abfd, s->symbol.section->vma + s->symbol.value, buf + 8);
1076 else
1077 bfd_h_put_32 (abfd, s->symbol.section->vma + s->symbol.value, buf + 8);
1078
1079 if (bfd_bwrite ((void *) buf, symlen, abfd) != symlen)
1080 goto err;
1081 }
1082 sym->strsize = _bfd_stringtab_size (strtab);
1083 sym->stroff = mdata->filelen;
1084 mdata->filelen += sym->strsize;
1085
1086 if (_bfd_stringtab_emit (abfd, strtab) != TRUE)
1087 goto err;
1088 _bfd_stringtab_free (strtab);
1089
1090 /* The command. */
1091 bfd_h_put_32 (abfd, sym->symoff, buf);
1092 bfd_h_put_32 (abfd, sym->nsyms, buf + 4);
1093 bfd_h_put_32 (abfd, sym->stroff, buf + 8);
1094 bfd_h_put_32 (abfd, sym->strsize, buf + 12);
1095
1096 if (bfd_seek (abfd, command->offset + 8, SEEK_SET) != 0
1097 || bfd_bwrite ((void *) buf, 16, abfd) != 16)
1098 return FALSE;
1099
1100 return TRUE;
1101
1102 err:
1103 _bfd_stringtab_free (strtab);
1104 return FALSE;
1105 }
1106
1107 /* Process the symbols and generate Mach-O specific fields.
1108 Number them. */
1109
1110 static bfd_boolean
1111 bfd_mach_o_mangle_symbols (bfd *abfd)
1112 {
1113 unsigned long i;
1114 asymbol **symbols = bfd_get_outsymbols (abfd);
1115
1116 for (i = 0; i < bfd_get_symcount (abfd); i++)
1117 {
1118 bfd_mach_o_asymbol *s = (bfd_mach_o_asymbol *)symbols[i];
1119
1120 if (s->n_type == BFD_MACH_O_N_UNDF && !(s->symbol.flags & BSF_DEBUGGING))
1121 {
1122 /* As genuine Mach-O symbols type shouldn't be N_UNDF (undefined
1123 symbols should be N_UNDEF | N_EXT), we suppose the back-end
1124 values haven't been set. */
1125 if (s->symbol.section == bfd_abs_section_ptr)
1126 s->n_type = BFD_MACH_O_N_ABS;
1127 else if (s->symbol.section == bfd_und_section_ptr)
1128 {
1129 s->n_type = BFD_MACH_O_N_UNDF;
1130 if (s->symbol.flags & BSF_WEAK)
1131 s->n_desc |= BFD_MACH_O_N_WEAK_REF;
1132 }
1133 else if (s->symbol.section == bfd_com_section_ptr)
1134 s->n_type = BFD_MACH_O_N_UNDF | BFD_MACH_O_N_EXT;
1135 else
1136 s->n_type = BFD_MACH_O_N_SECT;
1137
1138 if (s->symbol.flags & BSF_GLOBAL)
1139 s->n_type |= BFD_MACH_O_N_EXT;
1140 }
1141
1142 /* Compute section index. */
1143 if (s->symbol.section != bfd_abs_section_ptr
1144 && s->symbol.section != bfd_und_section_ptr
1145 && s->symbol.section != bfd_com_section_ptr)
1146 s->n_sect = s->symbol.section->target_index;
1147
1148 /* Number symbols. */
1149 s->symbol.udata.i = i;
1150 }
1151 return TRUE;
1152 }
1153
1154 bfd_boolean
1155 bfd_mach_o_write_contents (bfd *abfd)
1156 {
1157 unsigned int i;
1158 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
1159
1160 if (mdata->header.ncmds == 0)
1161 if (!bfd_mach_o_build_commands (abfd))
1162 return FALSE;
1163
1164 /* Now write header information. */
1165 if (mdata->header.filetype == 0)
1166 {
1167 if (abfd->flags & EXEC_P)
1168 mdata->header.filetype = BFD_MACH_O_MH_EXECUTE;
1169 else if (abfd->flags & DYNAMIC)
1170 mdata->header.filetype = BFD_MACH_O_MH_DYLIB;
1171 else
1172 mdata->header.filetype = BFD_MACH_O_MH_OBJECT;
1173 }
1174 if (!bfd_mach_o_write_header (abfd, &mdata->header))
1175 return FALSE;
1176
1177 /* Assign a number to each symbols. */
1178 if (!bfd_mach_o_mangle_symbols (abfd))
1179 return FALSE;
1180
1181 for (i = 0; i < mdata->header.ncmds; i++)
1182 {
1183 unsigned char buf[8];
1184 bfd_mach_o_load_command *cur = &mdata->commands[i];
1185 unsigned long typeflag;
1186
1187 typeflag = cur->type | (cur->type_required ? BFD_MACH_O_LC_REQ_DYLD : 0);
1188
1189 bfd_h_put_32 (abfd, typeflag, buf);
1190 bfd_h_put_32 (abfd, cur->len, buf + 4);
1191
1192 if (bfd_seek (abfd, cur->offset, SEEK_SET) != 0
1193 || bfd_bwrite ((void *) buf, 8, abfd) != 8)
1194 return FALSE;
1195
1196 switch (cur->type)
1197 {
1198 case BFD_MACH_O_LC_SEGMENT:
1199 if (bfd_mach_o_write_segment_32 (abfd, cur) != 0)
1200 return FALSE;
1201 break;
1202 case BFD_MACH_O_LC_SEGMENT_64:
1203 if (bfd_mach_o_write_segment_64 (abfd, cur) != 0)
1204 return FALSE;
1205 break;
1206 case BFD_MACH_O_LC_SYMTAB:
1207 if (!bfd_mach_o_write_symtab (abfd, cur))
1208 return FALSE;
1209 break;
1210 case BFD_MACH_O_LC_SYMSEG:
1211 break;
1212 case BFD_MACH_O_LC_THREAD:
1213 case BFD_MACH_O_LC_UNIXTHREAD:
1214 if (bfd_mach_o_write_thread (abfd, cur) != 0)
1215 return FALSE;
1216 break;
1217 case BFD_MACH_O_LC_LOADFVMLIB:
1218 case BFD_MACH_O_LC_IDFVMLIB:
1219 case BFD_MACH_O_LC_IDENT:
1220 case BFD_MACH_O_LC_FVMFILE:
1221 case BFD_MACH_O_LC_PREPAGE:
1222 case BFD_MACH_O_LC_DYSYMTAB:
1223 case BFD_MACH_O_LC_LOAD_DYLIB:
1224 case BFD_MACH_O_LC_LOAD_WEAK_DYLIB:
1225 case BFD_MACH_O_LC_ID_DYLIB:
1226 case BFD_MACH_O_LC_REEXPORT_DYLIB:
1227 case BFD_MACH_O_LC_LOAD_DYLINKER:
1228 case BFD_MACH_O_LC_ID_DYLINKER:
1229 case BFD_MACH_O_LC_PREBOUND_DYLIB:
1230 case BFD_MACH_O_LC_ROUTINES:
1231 case BFD_MACH_O_LC_SUB_FRAMEWORK:
1232 break;
1233 default:
1234 fprintf (stderr,
1235 "unable to write unknown load command 0x%lx\n",
1236 (unsigned long) cur->type);
1237 return FALSE;
1238 }
1239 }
1240
1241 return TRUE;
1242 }
1243
1244 /* Build Mach-O load commands from the sections. */
1245
1246 bfd_boolean
1247 bfd_mach_o_build_commands (bfd *abfd)
1248 {
1249 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
1250 unsigned int wide = mach_o_wide_p (&mdata->header);
1251 bfd_mach_o_segment_command *seg;
1252 bfd_mach_o_section *sections;
1253 asection *sec;
1254 bfd_mach_o_load_command *cmd;
1255 bfd_mach_o_load_command *symtab_cmd;
1256 int target_index;
1257
1258 /* Return now if commands are already built. */
1259 if (mdata->header.ncmds)
1260 return FALSE;
1261
1262 /* Very simple version: 1 command (segment) containing all sections. */
1263 mdata->header.ncmds = 2;
1264 mdata->commands = bfd_alloc (abfd, mdata->header.ncmds
1265 * sizeof (bfd_mach_o_load_command));
1266 if (mdata->commands == NULL)
1267 return FALSE;
1268 cmd = &mdata->commands[0];
1269 seg = &cmd->command.segment;
1270
1271 seg->nsects = bfd_count_sections (abfd);
1272 sections = bfd_alloc (abfd, seg->nsects * sizeof (bfd_mach_o_section));
1273 if (sections == NULL)
1274 return FALSE;
1275 seg->sections = sections;
1276
1277 /* Set segment command. */
1278 if (wide)
1279 {
1280 cmd->type = BFD_MACH_O_LC_SEGMENT_64;
1281 cmd->offset = BFD_MACH_O_HEADER_64_SIZE;
1282 cmd->len = BFD_MACH_O_LC_SEGMENT_64_SIZE
1283 + BFD_MACH_O_SECTION_64_SIZE * seg->nsects;
1284 }
1285 else
1286 {
1287 cmd->type = BFD_MACH_O_LC_SEGMENT;
1288 cmd->offset = BFD_MACH_O_HEADER_SIZE;
1289 cmd->len = BFD_MACH_O_LC_SEGMENT_SIZE
1290 + BFD_MACH_O_SECTION_SIZE * seg->nsects;
1291 }
1292 cmd->type_required = FALSE;
1293 mdata->header.sizeofcmds = cmd->len;
1294 mdata->filelen = cmd->offset + cmd->len;
1295
1296 /* Set symtab command. */
1297 symtab_cmd = &mdata->commands[1];
1298
1299 symtab_cmd->type = BFD_MACH_O_LC_SYMTAB;
1300 symtab_cmd->offset = cmd->offset + cmd->len;
1301 symtab_cmd->len = 6 * 4;
1302 symtab_cmd->type_required = FALSE;
1303
1304 mdata->header.sizeofcmds += symtab_cmd->len;
1305 mdata->filelen += symtab_cmd->len;
1306
1307 /* Fill segment command. */
1308 memset (seg->segname, 0, sizeof (seg->segname));
1309 seg->vmaddr = 0;
1310 seg->fileoff = mdata->filelen;
1311 seg->filesize = 0;
1312 seg->maxprot = BFD_MACH_O_PROT_READ | BFD_MACH_O_PROT_WRITE
1313 | BFD_MACH_O_PROT_EXECUTE;
1314 seg->initprot = seg->maxprot;
1315 seg->flags = 0;
1316
1317 /* Create Mach-O sections. */
1318 target_index = 0;
1319 for (sec = abfd->sections; sec; sec = sec->next)
1320 {
1321 sections->bfdsection = sec;
1322 bfd_mach_o_convert_section_name_to_mach_o (abfd, sec, sections);
1323 sections->addr = bfd_get_section_vma (abfd, sec);
1324 sections->size = bfd_get_section_size (sec);
1325 sections->align = bfd_get_section_alignment (abfd, sec);
1326
1327 if (sections->size != 0)
1328 {
1329 mdata->filelen = FILE_ALIGN (mdata->filelen, sections->align);
1330 sections->offset = mdata->filelen;
1331 }
1332 else
1333 sections->offset = 0;
1334 sections->reloff = 0;
1335 sections->nreloc = 0;
1336 sections->reserved1 = 0;
1337 sections->reserved2 = 0;
1338 sections->reserved3 = 0;
1339
1340 sec->filepos = sections->offset;
1341 sec->target_index = ++target_index;
1342
1343 mdata->filelen += sections->size;
1344 sections++;
1345 }
1346 seg->filesize = mdata->filelen - seg->fileoff;
1347 seg->vmsize = seg->filesize;
1348
1349 return TRUE;
1350 }
1351
1352 /* Set the contents of a section. */
1353
1354 bfd_boolean
1355 bfd_mach_o_set_section_contents (bfd *abfd,
1356 asection *section,
1357 const void * location,
1358 file_ptr offset,
1359 bfd_size_type count)
1360 {
1361 file_ptr pos;
1362
1363 /* This must be done first, because bfd_set_section_contents is
1364 going to set output_has_begun to TRUE. */
1365 if (! abfd->output_has_begun && ! bfd_mach_o_build_commands (abfd))
1366 return FALSE;
1367
1368 if (count == 0)
1369 return TRUE;
1370
1371 pos = section->filepos + offset;
1372 if (bfd_seek (abfd, pos, SEEK_SET) != 0
1373 || bfd_bwrite (location, count, abfd) != count)
1374 return FALSE;
1375
1376 return TRUE;
1377 }
1378
1379 int
1380 bfd_mach_o_sizeof_headers (bfd *a ATTRIBUTE_UNUSED,
1381 struct bfd_link_info *info ATTRIBUTE_UNUSED)
1382 {
1383 return 0;
1384 }
1385
1386 /* Make an empty symbol. This is required only because
1387 bfd_make_section_anyway wants to create a symbol for the section. */
1388
1389 asymbol *
1390 bfd_mach_o_make_empty_symbol (bfd *abfd)
1391 {
1392 asymbol *new_symbol;
1393
1394 new_symbol = bfd_zalloc (abfd, sizeof (bfd_mach_o_asymbol));
1395 if (new_symbol == NULL)
1396 return new_symbol;
1397 new_symbol->the_bfd = abfd;
1398 new_symbol->udata.i = 0;
1399 return new_symbol;
1400 }
1401
1402 static bfd_boolean
1403 bfd_mach_o_read_header (bfd *abfd, bfd_mach_o_header *header)
1404 {
1405 unsigned char buf[32];
1406 unsigned int size;
1407 bfd_vma (*get32) (const void *) = NULL;
1408
1409 /* Just read the magic number. */
1410 if (bfd_seek (abfd, 0, SEEK_SET) != 0
1411 || bfd_bread ((void *) buf, 4, abfd) != 4)
1412 return FALSE;
1413
1414 if (bfd_getb32 (buf) == BFD_MACH_O_MH_MAGIC)
1415 {
1416 header->byteorder = BFD_ENDIAN_BIG;
1417 header->magic = BFD_MACH_O_MH_MAGIC;
1418 header->version = 1;
1419 get32 = bfd_getb32;
1420 }
1421 else if (bfd_getl32 (buf) == BFD_MACH_O_MH_MAGIC)
1422 {
1423 header->byteorder = BFD_ENDIAN_LITTLE;
1424 header->magic = BFD_MACH_O_MH_MAGIC;
1425 header->version = 1;
1426 get32 = bfd_getl32;
1427 }
1428 else if (bfd_getb32 (buf) == BFD_MACH_O_MH_MAGIC_64)
1429 {
1430 header->byteorder = BFD_ENDIAN_BIG;
1431 header->magic = BFD_MACH_O_MH_MAGIC_64;
1432 header->version = 2;
1433 get32 = bfd_getb32;
1434 }
1435 else if (bfd_getl32 (buf) == BFD_MACH_O_MH_MAGIC_64)
1436 {
1437 header->byteorder = BFD_ENDIAN_LITTLE;
1438 header->magic = BFD_MACH_O_MH_MAGIC_64;
1439 header->version = 2;
1440 get32 = bfd_getl32;
1441 }
1442 else
1443 {
1444 header->byteorder = BFD_ENDIAN_UNKNOWN;
1445 return FALSE;
1446 }
1447
1448 /* Once the size of the header is known, read the full header. */
1449 size = mach_o_wide_p (header) ?
1450 BFD_MACH_O_HEADER_64_SIZE : BFD_MACH_O_HEADER_SIZE;
1451
1452 if (bfd_seek (abfd, 0, SEEK_SET) != 0
1453 || bfd_bread ((void *) buf, size, abfd) != size)
1454 return FALSE;
1455
1456 header->cputype = (*get32) (buf + 4);
1457 header->cpusubtype = (*get32) (buf + 8);
1458 header->filetype = (*get32) (buf + 12);
1459 header->ncmds = (*get32) (buf + 16);
1460 header->sizeofcmds = (*get32) (buf + 20);
1461 header->flags = (*get32) (buf + 24);
1462
1463 if (mach_o_wide_p (header))
1464 header->reserved = (*get32) (buf + 28);
1465
1466 return TRUE;
1467 }
1468
1469 static asection *
1470 bfd_mach_o_make_bfd_section (bfd *abfd, bfd_mach_o_section *section,
1471 unsigned long prot)
1472 {
1473 asection *bfdsec;
1474 char *sname;
1475 flagword flags;
1476
1477 sname = bfd_mach_o_convert_section_name_to_bfd (abfd, section);
1478 if (sname == NULL)
1479 return NULL;
1480
1481 if ((section->flags & BFD_MACH_O_S_ATTR_DEBUG)
1482 || !strcmp (section->segname, "__DWARF"))
1483 {
1484 /* Force flags for dwarf sections. This looks weird but dsym files
1485 have no flags for them and this is important for gdb. */
1486 flags = SEC_HAS_CONTENTS | SEC_DEBUGGING;
1487 }
1488 else
1489 {
1490 flags = SEC_ALLOC;
1491 if ((section->flags & BFD_MACH_O_SECTION_TYPE_MASK)
1492 != BFD_MACH_O_S_ZEROFILL)
1493 {
1494 flags |= SEC_HAS_CONTENTS | SEC_LOAD;
1495 if (prot & BFD_MACH_O_PROT_EXECUTE)
1496 flags |= SEC_CODE;
1497 if (prot & BFD_MACH_O_PROT_WRITE)
1498 flags |= SEC_DATA;
1499 else if (prot & BFD_MACH_O_PROT_READ)
1500 flags |= SEC_READONLY;
1501 }
1502 }
1503 if (section->nreloc != 0)
1504 flags |= SEC_RELOC;
1505
1506 bfdsec = bfd_make_section_anyway_with_flags (abfd, sname, flags);
1507 if (bfdsec == NULL)
1508 return NULL;
1509
1510 bfdsec->vma = section->addr;
1511 bfdsec->lma = section->addr;
1512 bfdsec->size = section->size;
1513 bfdsec->filepos = section->offset;
1514 bfdsec->alignment_power = section->align;
1515 bfdsec->segment_mark = 0;
1516 bfdsec->reloc_count = section->nreloc;
1517 bfdsec->rel_filepos = section->reloff;
1518
1519 return bfdsec;
1520 }
1521
1522 static int
1523 bfd_mach_o_read_section_32 (bfd *abfd,
1524 bfd_mach_o_section *section,
1525 unsigned int offset,
1526 unsigned long prot)
1527 {
1528 unsigned char buf[BFD_MACH_O_SECTION_SIZE];
1529
1530 if (bfd_seek (abfd, offset, SEEK_SET) != 0
1531 || (bfd_bread ((void *) buf, BFD_MACH_O_SECTION_SIZE, abfd)
1532 != BFD_MACH_O_SECTION_SIZE))
1533 return -1;
1534
1535 memcpy (section->sectname, buf, 16);
1536 section->sectname[16] = '\0';
1537 memcpy (section->segname, buf + 16, 16);
1538 section->segname[16] = '\0';
1539 section->addr = bfd_h_get_32 (abfd, buf + 32);
1540 section->size = bfd_h_get_32 (abfd, buf + 36);
1541 section->offset = bfd_h_get_32 (abfd, buf + 40);
1542 section->align = bfd_h_get_32 (abfd, buf + 44);
1543 section->reloff = bfd_h_get_32 (abfd, buf + 48);
1544 section->nreloc = bfd_h_get_32 (abfd, buf + 52);
1545 section->flags = bfd_h_get_32 (abfd, buf + 56);
1546 section->reserved1 = bfd_h_get_32 (abfd, buf + 60);
1547 section->reserved2 = bfd_h_get_32 (abfd, buf + 64);
1548 section->reserved3 = 0;
1549 section->bfdsection = bfd_mach_o_make_bfd_section (abfd, section, prot);
1550
1551 if (section->bfdsection == NULL)
1552 return -1;
1553
1554 return 0;
1555 }
1556
1557 static int
1558 bfd_mach_o_read_section_64 (bfd *abfd,
1559 bfd_mach_o_section *section,
1560 unsigned int offset,
1561 unsigned long prot)
1562 {
1563 unsigned char buf[BFD_MACH_O_SECTION_64_SIZE];
1564
1565 if (bfd_seek (abfd, offset, SEEK_SET) != 0
1566 || (bfd_bread ((void *) buf, BFD_MACH_O_SECTION_64_SIZE, abfd)
1567 != BFD_MACH_O_SECTION_64_SIZE))
1568 return -1;
1569
1570 memcpy (section->sectname, buf, 16);
1571 section->sectname[16] = '\0';
1572 memcpy (section->segname, buf + 16, 16);
1573 section->segname[16] = '\0';
1574 section->addr = bfd_h_get_64 (abfd, buf + 32);
1575 section->size = bfd_h_get_64 (abfd, buf + 40);
1576 section->offset = bfd_h_get_32 (abfd, buf + 48);
1577 section->align = bfd_h_get_32 (abfd, buf + 52);
1578 section->reloff = bfd_h_get_32 (abfd, buf + 56);
1579 section->nreloc = bfd_h_get_32 (abfd, buf + 60);
1580 section->flags = bfd_h_get_32 (abfd, buf + 64);
1581 section->reserved1 = bfd_h_get_32 (abfd, buf + 68);
1582 section->reserved2 = bfd_h_get_32 (abfd, buf + 72);
1583 section->reserved3 = bfd_h_get_32 (abfd, buf + 76);
1584 section->bfdsection = bfd_mach_o_make_bfd_section (abfd, section, prot);
1585
1586 if (section->bfdsection == NULL)
1587 return -1;
1588
1589 return 0;
1590 }
1591
1592 static int
1593 bfd_mach_o_read_section (bfd *abfd,
1594 bfd_mach_o_section *section,
1595 unsigned int offset,
1596 unsigned long prot,
1597 unsigned int wide)
1598 {
1599 if (wide)
1600 return bfd_mach_o_read_section_64 (abfd, section, offset, prot);
1601 else
1602 return bfd_mach_o_read_section_32 (abfd, section, offset, prot);
1603 }
1604
1605 static int
1606 bfd_mach_o_read_symtab_symbol (bfd *abfd,
1607 bfd_mach_o_symtab_command *sym,
1608 bfd_mach_o_asymbol *s,
1609 unsigned long i)
1610 {
1611 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
1612 unsigned int wide = mach_o_wide_p (&mdata->header);
1613 unsigned int symwidth =
1614 wide ? BFD_MACH_O_NLIST_64_SIZE : BFD_MACH_O_NLIST_SIZE;
1615 unsigned int symoff = sym->symoff + (i * symwidth);
1616 unsigned char buf[16];
1617 unsigned char type = -1;
1618 unsigned char section = -1;
1619 short desc = -1;
1620 symvalue value = -1;
1621 unsigned long stroff = -1;
1622 unsigned int symtype = -1;
1623
1624 BFD_ASSERT (sym->strtab != NULL);
1625
1626 if (bfd_seek (abfd, symoff, SEEK_SET) != 0
1627 || bfd_bread ((void *) buf, symwidth, abfd) != symwidth)
1628 {
1629 fprintf (stderr, "bfd_mach_o_read_symtab_symbol: unable to read %d bytes at %lu\n",
1630 symwidth, (unsigned long) symoff);
1631 return -1;
1632 }
1633
1634 stroff = bfd_h_get_32 (abfd, buf);
1635 type = bfd_h_get_8 (abfd, buf + 4);
1636 symtype = type & BFD_MACH_O_N_TYPE;
1637 section = bfd_h_get_8 (abfd, buf + 5);
1638 desc = bfd_h_get_16 (abfd, buf + 6);
1639 if (wide)
1640 value = bfd_h_get_64 (abfd, buf + 8);
1641 else
1642 value = bfd_h_get_32 (abfd, buf + 8);
1643
1644 if (stroff >= sym->strsize)
1645 {
1646 fprintf (stderr, "bfd_mach_o_read_symtab_symbol: symbol name out of range (%lu >= %lu)\n",
1647 (unsigned long) stroff, (unsigned long) sym->strsize);
1648 return -1;
1649 }
1650
1651 s->symbol.the_bfd = abfd;
1652 s->symbol.name = sym->strtab + stroff;
1653 s->symbol.value = value;
1654 s->symbol.flags = 0x0;
1655 s->symbol.udata.i = 0;
1656 s->n_type = type;
1657 s->n_sect = section;
1658 s->n_desc = desc;
1659
1660 if (type & BFD_MACH_O_N_STAB)
1661 {
1662 s->symbol.flags |= BSF_DEBUGGING;
1663 s->symbol.section = bfd_und_section_ptr;
1664 switch (type)
1665 {
1666 case N_FUN:
1667 case N_STSYM:
1668 case N_LCSYM:
1669 case N_BNSYM:
1670 case N_SLINE:
1671 case N_ENSYM:
1672 case N_ECOMM:
1673 case N_ECOML:
1674 case N_GSYM:
1675 if ((section > 0) && (section <= mdata->nsects))
1676 {
1677 s->symbol.section = mdata->sections[section - 1]->bfdsection;
1678 s->symbol.value =
1679 s->symbol.value - mdata->sections[section - 1]->addr;
1680 }
1681 break;
1682 }
1683 }
1684 else
1685 {
1686 if (type & BFD_MACH_O_N_PEXT)
1687 s->symbol.flags |= BSF_GLOBAL;
1688
1689 if (type & BFD_MACH_O_N_EXT)
1690 s->symbol.flags |= BSF_GLOBAL;
1691
1692 if (!(type & (BFD_MACH_O_N_PEXT | BFD_MACH_O_N_EXT)))
1693 s->symbol.flags |= BSF_LOCAL;
1694
1695 switch (symtype)
1696 {
1697 case BFD_MACH_O_N_UNDF:
1698 if (type == (BFD_MACH_O_N_UNDF | BFD_MACH_O_N_EXT)
1699 && s->symbol.value != 0)
1700 {
1701 /* A common symbol. */
1702 s->symbol.section = bfd_com_section_ptr;
1703 s->symbol.flags = BSF_NO_FLAGS;
1704 }
1705 else
1706 {
1707 s->symbol.section = bfd_und_section_ptr;
1708 if (s->n_desc & BFD_MACH_O_N_WEAK_REF)
1709 s->symbol.flags |= BSF_WEAK;
1710 }
1711 break;
1712 case BFD_MACH_O_N_PBUD:
1713 s->symbol.section = bfd_und_section_ptr;
1714 break;
1715 case BFD_MACH_O_N_ABS:
1716 s->symbol.section = bfd_abs_section_ptr;
1717 break;
1718 case BFD_MACH_O_N_SECT:
1719 if ((section > 0) && (section <= mdata->nsects))
1720 {
1721 s->symbol.section = mdata->sections[section - 1]->bfdsection;
1722 s->symbol.value =
1723 s->symbol.value - mdata->sections[section - 1]->addr;
1724 }
1725 else
1726 {
1727 /* Mach-O uses 0 to mean "no section"; not an error. */
1728 if (section != 0)
1729 {
1730 fprintf (stderr, "bfd_mach_o_read_symtab_symbol: "
1731 "symbol \"%s\" specified invalid section %d (max %lu): setting to undefined\n",
1732 s->symbol.name, section, mdata->nsects);
1733 }
1734 s->symbol.section = bfd_und_section_ptr;
1735 }
1736 break;
1737 case BFD_MACH_O_N_INDR:
1738 fprintf (stderr, "bfd_mach_o_read_symtab_symbol: "
1739 "symbol \"%s\" is unsupported 'indirect' reference: setting to undefined\n",
1740 s->symbol.name);
1741 s->symbol.section = bfd_und_section_ptr;
1742 break;
1743 default:
1744 fprintf (stderr, "bfd_mach_o_read_symtab_symbol: "
1745 "symbol \"%s\" specified invalid type field 0x%x: setting to undefined\n",
1746 s->symbol.name, symtype);
1747 s->symbol.section = bfd_und_section_ptr;
1748 break;
1749 }
1750 }
1751
1752 return 0;
1753 }
1754
1755 static int
1756 bfd_mach_o_read_symtab_strtab (bfd *abfd)
1757 {
1758 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
1759 bfd_mach_o_symtab_command *sym = mdata->symtab;
1760
1761 /* Fail if there is no symtab. */
1762 if (sym == NULL)
1763 return -1;
1764
1765 /* Success if already loaded. */
1766 if (sym->strtab)
1767 return 0;
1768
1769 if (abfd->flags & BFD_IN_MEMORY)
1770 {
1771 struct bfd_in_memory *b;
1772
1773 b = (struct bfd_in_memory *) abfd->iostream;
1774
1775 if ((sym->stroff + sym->strsize) > b->size)
1776 {
1777 bfd_set_error (bfd_error_file_truncated);
1778 return -1;
1779 }
1780 sym->strtab = (char *) b->buffer + sym->stroff;
1781 }
1782 else
1783 {
1784 sym->strtab = bfd_alloc (abfd, sym->strsize);
1785 if (sym->strtab == NULL)
1786 return -1;
1787
1788 if (bfd_seek (abfd, sym->stroff, SEEK_SET) != 0
1789 || bfd_bread ((void *) sym->strtab, sym->strsize, abfd) != sym->strsize)
1790 {
1791 bfd_set_error (bfd_error_file_truncated);
1792 return -1;
1793 }
1794 }
1795
1796 return 0;
1797 }
1798
1799 static int
1800 bfd_mach_o_read_symtab_symbols (bfd *abfd)
1801 {
1802 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
1803 bfd_mach_o_symtab_command *sym = mdata->symtab;
1804 unsigned long i;
1805 int ret;
1806
1807 if (sym->symbols)
1808 return 0;
1809
1810 sym->symbols = bfd_alloc (abfd, sym->nsyms * sizeof (bfd_mach_o_asymbol));
1811
1812 if (sym->symbols == NULL)
1813 {
1814 fprintf (stderr, "bfd_mach_o_read_symtab_symbols: unable to allocate memory for symbols\n");
1815 return -1;
1816 }
1817
1818 ret = bfd_mach_o_read_symtab_strtab (abfd);
1819 if (ret != 0)
1820 return ret;
1821
1822 for (i = 0; i < sym->nsyms; i++)
1823 {
1824 ret = bfd_mach_o_read_symtab_symbol (abfd, sym, &sym->symbols[i], i);
1825 if (ret != 0)
1826 return ret;
1827 }
1828
1829 return 0;
1830 }
1831
1832 int
1833 bfd_mach_o_read_dysymtab_symbol (bfd *abfd,
1834 bfd_mach_o_dysymtab_command *dysym,
1835 bfd_mach_o_symtab_command *sym,
1836 bfd_mach_o_asymbol *s,
1837 unsigned long i)
1838 {
1839 unsigned long isymoff = dysym->indirectsymoff + (i * 4);
1840 unsigned long sym_index;
1841 unsigned char buf[4];
1842
1843 BFD_ASSERT (i < dysym->nindirectsyms);
1844
1845 if (bfd_seek (abfd, isymoff, SEEK_SET) != 0
1846 || bfd_bread ((void *) buf, 4, abfd) != 4)
1847 {
1848 fprintf (stderr, "bfd_mach_o_read_dysymtab_symbol: unable to read %lu bytes at %lu\n",
1849 (unsigned long) 4, isymoff);
1850 return -1;
1851 }
1852 sym_index = bfd_h_get_32 (abfd, buf);
1853
1854 return bfd_mach_o_read_symtab_symbol (abfd, sym, s, sym_index);
1855 }
1856
1857 static const char *
1858 bfd_mach_o_i386_flavour_string (unsigned int flavour)
1859 {
1860 switch ((int) flavour)
1861 {
1862 case BFD_MACH_O_x86_THREAD_STATE32: return "x86_THREAD_STATE32";
1863 case BFD_MACH_O_x86_FLOAT_STATE32: return "x86_FLOAT_STATE32";
1864 case BFD_MACH_O_x86_EXCEPTION_STATE32: return "x86_EXCEPTION_STATE32";
1865 case BFD_MACH_O_x86_THREAD_STATE64: return "x86_THREAD_STATE64";
1866 case BFD_MACH_O_x86_FLOAT_STATE64: return "x86_FLOAT_STATE64";
1867 case BFD_MACH_O_x86_EXCEPTION_STATE64: return "x86_EXCEPTION_STATE64";
1868 case BFD_MACH_O_x86_THREAD_STATE: return "x86_THREAD_STATE";
1869 case BFD_MACH_O_x86_FLOAT_STATE: return "x86_FLOAT_STATE";
1870 case BFD_MACH_O_x86_EXCEPTION_STATE: return "x86_EXCEPTION_STATE";
1871 case BFD_MACH_O_x86_DEBUG_STATE32: return "x86_DEBUG_STATE32";
1872 case BFD_MACH_O_x86_DEBUG_STATE64: return "x86_DEBUG_STATE64";
1873 case BFD_MACH_O_x86_DEBUG_STATE: return "x86_DEBUG_STATE";
1874 case BFD_MACH_O_x86_THREAD_STATE_NONE: return "x86_THREAD_STATE_NONE";
1875 default: return "UNKNOWN";
1876 }
1877 }
1878
1879 static const char *
1880 bfd_mach_o_ppc_flavour_string (unsigned int flavour)
1881 {
1882 switch ((int) flavour)
1883 {
1884 case BFD_MACH_O_PPC_THREAD_STATE: return "PPC_THREAD_STATE";
1885 case BFD_MACH_O_PPC_FLOAT_STATE: return "PPC_FLOAT_STATE";
1886 case BFD_MACH_O_PPC_EXCEPTION_STATE: return "PPC_EXCEPTION_STATE";
1887 case BFD_MACH_O_PPC_VECTOR_STATE: return "PPC_VECTOR_STATE";
1888 case BFD_MACH_O_PPC_THREAD_STATE64: return "PPC_THREAD_STATE64";
1889 case BFD_MACH_O_PPC_EXCEPTION_STATE64: return "PPC_EXCEPTION_STATE64";
1890 default: return "UNKNOWN";
1891 }
1892 }
1893
1894 static int
1895 bfd_mach_o_read_dylinker (bfd *abfd, bfd_mach_o_load_command *command)
1896 {
1897 bfd_mach_o_dylinker_command *cmd = &command->command.dylinker;
1898 unsigned char buf[4];
1899 unsigned int nameoff;
1900
1901 BFD_ASSERT ((command->type == BFD_MACH_O_LC_ID_DYLINKER)
1902 || (command->type == BFD_MACH_O_LC_LOAD_DYLINKER));
1903
1904 if (bfd_seek (abfd, command->offset + 8, SEEK_SET) != 0
1905 || bfd_bread ((void *) buf, 4, abfd) != 4)
1906 return -1;
1907
1908 nameoff = bfd_h_get_32 (abfd, buf + 0);
1909
1910 cmd->name_offset = command->offset + nameoff;
1911 cmd->name_len = command->len - nameoff;
1912 cmd->name_str = bfd_alloc (abfd, cmd->name_len);
1913 if (cmd->name_str == NULL)
1914 return -1;
1915 if (bfd_seek (abfd, cmd->name_offset, SEEK_SET) != 0
1916 || bfd_bread (cmd->name_str, cmd->name_len, abfd) != cmd->name_len)
1917 return -1;
1918 return 0;
1919 }
1920
1921 static int
1922 bfd_mach_o_read_dylib (bfd *abfd, bfd_mach_o_load_command *command)
1923 {
1924 bfd_mach_o_dylib_command *cmd = &command->command.dylib;
1925 unsigned char buf[16];
1926 unsigned int nameoff;
1927
1928 switch (command->type)
1929 {
1930 case BFD_MACH_O_LC_LOAD_DYLIB:
1931 case BFD_MACH_O_LC_LOAD_WEAK_DYLIB:
1932 case BFD_MACH_O_LC_ID_DYLIB:
1933 case BFD_MACH_O_LC_REEXPORT_DYLIB:
1934 break;
1935 default:
1936 BFD_FAIL ();
1937 return -1;
1938 }
1939
1940 if (bfd_seek (abfd, command->offset + 8, SEEK_SET) != 0
1941 || bfd_bread ((void *) buf, 16, abfd) != 16)
1942 return -1;
1943
1944 nameoff = bfd_h_get_32 (abfd, buf + 0);
1945 cmd->timestamp = bfd_h_get_32 (abfd, buf + 4);
1946 cmd->current_version = bfd_h_get_32 (abfd, buf + 8);
1947 cmd->compatibility_version = bfd_h_get_32 (abfd, buf + 12);
1948
1949 cmd->name_offset = command->offset + nameoff;
1950 cmd->name_len = command->len - nameoff;
1951 cmd->name_str = bfd_alloc (abfd, cmd->name_len);
1952 if (cmd->name_str == NULL)
1953 return -1;
1954 if (bfd_seek (abfd, cmd->name_offset, SEEK_SET) != 0
1955 || bfd_bread (cmd->name_str, cmd->name_len, abfd) != cmd->name_len)
1956 return -1;
1957 return 0;
1958 }
1959
1960 static int
1961 bfd_mach_o_read_prebound_dylib (bfd *abfd ATTRIBUTE_UNUSED,
1962 bfd_mach_o_load_command *command ATTRIBUTE_UNUSED)
1963 {
1964 /* bfd_mach_o_prebound_dylib_command *cmd = &command->command.prebound_dylib; */
1965
1966 BFD_ASSERT (command->type == BFD_MACH_O_LC_PREBOUND_DYLIB);
1967 return 0;
1968 }
1969
1970 static int
1971 bfd_mach_o_read_thread (bfd *abfd, bfd_mach_o_load_command *command)
1972 {
1973 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
1974 bfd_mach_o_thread_command *cmd = &command->command.thread;
1975 unsigned char buf[8];
1976 unsigned int offset;
1977 unsigned int nflavours;
1978 unsigned int i;
1979
1980 BFD_ASSERT ((command->type == BFD_MACH_O_LC_THREAD)
1981 || (command->type == BFD_MACH_O_LC_UNIXTHREAD));
1982
1983 /* Count the number of threads. */
1984 offset = 8;
1985 nflavours = 0;
1986 while (offset != command->len)
1987 {
1988 if (offset >= command->len)
1989 return -1;
1990
1991 if (bfd_seek (abfd, command->offset + offset, SEEK_SET) != 0
1992 || bfd_bread ((void *) buf, 8, abfd) != 8)
1993 return -1;
1994
1995 offset += 8 + bfd_h_get_32 (abfd, buf + 4) * 4;
1996 nflavours++;
1997 }
1998
1999 /* Allocate threads. */
2000 cmd->flavours = bfd_alloc
2001 (abfd, nflavours * sizeof (bfd_mach_o_thread_flavour));
2002 if (cmd->flavours == NULL)
2003 return -1;
2004 cmd->nflavours = nflavours;
2005
2006 offset = 8;
2007 nflavours = 0;
2008 while (offset != command->len)
2009 {
2010 if (offset >= command->len)
2011 return -1;
2012
2013 if (nflavours >= cmd->nflavours)
2014 return -1;
2015
2016 if (bfd_seek (abfd, command->offset + offset, SEEK_SET) != 0
2017 || bfd_bread ((void *) buf, 8, abfd) != 8)
2018 return -1;
2019
2020 cmd->flavours[nflavours].flavour = bfd_h_get_32 (abfd, buf);
2021 cmd->flavours[nflavours].offset = command->offset + offset + 8;
2022 cmd->flavours[nflavours].size = bfd_h_get_32 (abfd, buf + 4) * 4;
2023 offset += cmd->flavours[nflavours].size + 8;
2024 nflavours++;
2025 }
2026
2027 for (i = 0; i < nflavours; i++)
2028 {
2029 asection *bfdsec;
2030 unsigned int snamelen;
2031 char *sname;
2032 const char *flavourstr;
2033 const char *prefix = "LC_THREAD";
2034 unsigned int j = 0;
2035
2036 switch (mdata->header.cputype)
2037 {
2038 case BFD_MACH_O_CPU_TYPE_POWERPC:
2039 case BFD_MACH_O_CPU_TYPE_POWERPC_64:
2040 flavourstr = bfd_mach_o_ppc_flavour_string (cmd->flavours[i].flavour);
2041 break;
2042 case BFD_MACH_O_CPU_TYPE_I386:
2043 case BFD_MACH_O_CPU_TYPE_X86_64:
2044 flavourstr = bfd_mach_o_i386_flavour_string (cmd->flavours[i].flavour);
2045 break;
2046 default:
2047 flavourstr = "UNKNOWN_ARCHITECTURE";
2048 break;
2049 }
2050
2051 snamelen = strlen (prefix) + 1 + 20 + 1 + strlen (flavourstr) + 1;
2052 sname = bfd_alloc (abfd, snamelen);
2053 if (sname == NULL)
2054 return -1;
2055
2056 for (;;)
2057 {
2058 sprintf (sname, "%s.%s.%u", prefix, flavourstr, j);
2059 if (bfd_get_section_by_name (abfd, sname) == NULL)
2060 break;
2061 j++;
2062 }
2063
2064 bfdsec = bfd_make_section_with_flags (abfd, sname, SEC_HAS_CONTENTS);
2065
2066 bfdsec->vma = 0;
2067 bfdsec->lma = 0;
2068 bfdsec->size = cmd->flavours[i].size;
2069 bfdsec->filepos = cmd->flavours[i].offset;
2070 bfdsec->alignment_power = 0x0;
2071
2072 cmd->section = bfdsec;
2073 }
2074
2075 return 0;
2076 }
2077
2078 static int
2079 bfd_mach_o_read_dysymtab (bfd *abfd, bfd_mach_o_load_command *command)
2080 {
2081 bfd_mach_o_dysymtab_command *cmd = &command->command.dysymtab;
2082 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
2083 unsigned char buf[72];
2084
2085 BFD_ASSERT (command->type == BFD_MACH_O_LC_DYSYMTAB);
2086
2087 if (bfd_seek (abfd, command->offset + 8, SEEK_SET) != 0
2088 || bfd_bread ((void *) buf, 72, abfd) != 72)
2089 return -1;
2090
2091 cmd->ilocalsym = bfd_h_get_32 (abfd, buf + 0);
2092 cmd->nlocalsym = bfd_h_get_32 (abfd, buf + 4);
2093 cmd->iextdefsym = bfd_h_get_32 (abfd, buf + 8);
2094 cmd->nextdefsym = bfd_h_get_32 (abfd, buf + 12);
2095 cmd->iundefsym = bfd_h_get_32 (abfd, buf + 16);
2096 cmd->nundefsym = bfd_h_get_32 (abfd, buf + 20);
2097 cmd->tocoff = bfd_h_get_32 (abfd, buf + 24);
2098 cmd->ntoc = bfd_h_get_32 (abfd, buf + 28);
2099 cmd->modtaboff = bfd_h_get_32 (abfd, buf + 32);
2100 cmd->nmodtab = bfd_h_get_32 (abfd, buf + 36);
2101 cmd->extrefsymoff = bfd_h_get_32 (abfd, buf + 40);
2102 cmd->nextrefsyms = bfd_h_get_32 (abfd, buf + 44);
2103 cmd->indirectsymoff = bfd_h_get_32 (abfd, buf + 48);
2104 cmd->nindirectsyms = bfd_h_get_32 (abfd, buf + 52);
2105 cmd->extreloff = bfd_h_get_32 (abfd, buf + 56);
2106 cmd->nextrel = bfd_h_get_32 (abfd, buf + 60);
2107 cmd->locreloff = bfd_h_get_32 (abfd, buf + 64);
2108 cmd->nlocrel = bfd_h_get_32 (abfd, buf + 68);
2109
2110 if (cmd->nmodtab != 0)
2111 {
2112 unsigned int i;
2113 int wide = bfd_mach_o_wide_p (abfd);
2114 unsigned int module_len = wide ? 56 : 52;
2115
2116 cmd->dylib_module =
2117 bfd_alloc (abfd, cmd->nmodtab * sizeof (bfd_mach_o_dylib_module));
2118 if (cmd->dylib_module == NULL)
2119 return -1;
2120
2121 if (bfd_seek (abfd, cmd->modtaboff, SEEK_SET) != 0)
2122 return -1;
2123
2124 for (i = 0; i < cmd->nmodtab; i++)
2125 {
2126 bfd_mach_o_dylib_module *module = &cmd->dylib_module[i];
2127 unsigned long v;
2128
2129 if (bfd_bread ((void *) buf, module_len, abfd) != module_len)
2130 return -1;
2131
2132 module->module_name_idx = bfd_h_get_32 (abfd, buf + 0);
2133 module->iextdefsym = bfd_h_get_32 (abfd, buf + 4);
2134 module->nextdefsym = bfd_h_get_32 (abfd, buf + 8);
2135 module->irefsym = bfd_h_get_32 (abfd, buf + 12);
2136 module->nrefsym = bfd_h_get_32 (abfd, buf + 16);
2137 module->ilocalsym = bfd_h_get_32 (abfd, buf + 20);
2138 module->nlocalsym = bfd_h_get_32 (abfd, buf + 24);
2139 module->iextrel = bfd_h_get_32 (abfd, buf + 28);
2140 module->nextrel = bfd_h_get_32 (abfd, buf + 32);
2141 v = bfd_h_get_32 (abfd, buf +36);
2142 module->iinit = v & 0xffff;
2143 module->iterm = (v >> 16) & 0xffff;
2144 v = bfd_h_get_32 (abfd, buf + 40);
2145 module->ninit = v & 0xffff;
2146 module->nterm = (v >> 16) & 0xffff;
2147 if (wide)
2148 {
2149 module->objc_module_info_size = bfd_h_get_32 (abfd, buf + 44);
2150 module->objc_module_info_addr = bfd_h_get_64 (abfd, buf + 48);
2151 }
2152 else
2153 {
2154 module->objc_module_info_addr = bfd_h_get_32 (abfd, buf + 44);
2155 module->objc_module_info_size = bfd_h_get_32 (abfd, buf + 48);
2156 }
2157 }
2158 }
2159
2160 if (cmd->ntoc != 0)
2161 {
2162 unsigned int i;
2163
2164 cmd->dylib_toc = bfd_alloc
2165 (abfd, cmd->ntoc * sizeof (bfd_mach_o_dylib_table_of_content));
2166 if (cmd->dylib_toc == NULL)
2167 return -1;
2168
2169 if (bfd_seek (abfd, cmd->tocoff, SEEK_SET) != 0)
2170 return -1;
2171
2172 for (i = 0; i < cmd->ntoc; i++)
2173 {
2174 bfd_mach_o_dylib_table_of_content *toc = &cmd->dylib_toc[i];
2175
2176 if (bfd_bread ((void *) buf, 8, abfd) != 8)
2177 return -1;
2178
2179 toc->symbol_index = bfd_h_get_32 (abfd, buf + 0);
2180 toc->module_index = bfd_h_get_32 (abfd, buf + 4);
2181 }
2182 }
2183
2184 if (cmd->nindirectsyms != 0)
2185 {
2186 unsigned int i;
2187
2188 cmd->indirect_syms = bfd_alloc
2189 (abfd, cmd->nindirectsyms * sizeof (unsigned int));
2190 if (cmd->indirect_syms == NULL)
2191 return -1;
2192
2193 if (bfd_seek (abfd, cmd->indirectsymoff, SEEK_SET) != 0)
2194 return -1;
2195
2196 for (i = 0; i < cmd->nindirectsyms; i++)
2197 {
2198 unsigned int *is = &cmd->indirect_syms[i];
2199
2200 if (bfd_bread ((void *) buf, 4, abfd) != 4)
2201 return -1;
2202
2203 *is = bfd_h_get_32 (abfd, buf + 0);
2204 }
2205 }
2206
2207 if (cmd->nextrefsyms != 0)
2208 {
2209 unsigned long v;
2210 unsigned int i;
2211
2212 cmd->ext_refs = bfd_alloc
2213 (abfd, cmd->nextrefsyms * sizeof (bfd_mach_o_dylib_reference));
2214 if (cmd->ext_refs == NULL)
2215 return -1;
2216
2217 if (bfd_seek (abfd, cmd->extrefsymoff, SEEK_SET) != 0)
2218 return -1;
2219
2220 for (i = 0; i < cmd->nextrefsyms; i++)
2221 {
2222 bfd_mach_o_dylib_reference *ref = &cmd->ext_refs[i];
2223
2224 if (bfd_bread ((void *) buf, 4, abfd) != 4)
2225 return -1;
2226
2227 /* Fields isym and flags are written as bit-fields, thus we need
2228 a specific processing for endianness. */
2229 v = bfd_h_get_32 (abfd, buf + 0);
2230 if (bfd_big_endian (abfd))
2231 {
2232 ref->isym = (v >> 8) & 0xffffff;
2233 ref->flags = v & 0xff;
2234 }
2235 else
2236 {
2237 ref->isym = v & 0xffffff;
2238 ref->flags = (v >> 24) & 0xff;
2239 }
2240 }
2241 }
2242
2243 if (mdata->dysymtab)
2244 return -1;
2245 mdata->dysymtab = cmd;
2246
2247 return 0;
2248 }
2249
2250 static int
2251 bfd_mach_o_read_symtab (bfd *abfd, bfd_mach_o_load_command *command)
2252 {
2253 bfd_mach_o_symtab_command *symtab = &command->command.symtab;
2254 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
2255 unsigned char buf[16];
2256
2257 BFD_ASSERT (command->type == BFD_MACH_O_LC_SYMTAB);
2258
2259 if (bfd_seek (abfd, command->offset + 8, SEEK_SET) != 0
2260 || bfd_bread ((void *) buf, 16, abfd) != 16)
2261 return -1;
2262
2263 symtab->symoff = bfd_h_get_32 (abfd, buf);
2264 symtab->nsyms = bfd_h_get_32 (abfd, buf + 4);
2265 symtab->stroff = bfd_h_get_32 (abfd, buf + 8);
2266 symtab->strsize = bfd_h_get_32 (abfd, buf + 12);
2267 symtab->symbols = NULL;
2268 symtab->strtab = NULL;
2269
2270 if (symtab->nsyms != 0)
2271 abfd->flags |= HAS_SYMS;
2272
2273 if (mdata->symtab)
2274 return -1;
2275 mdata->symtab = symtab;
2276 return 0;
2277 }
2278
2279 static int
2280 bfd_mach_o_read_uuid (bfd *abfd, bfd_mach_o_load_command *command)
2281 {
2282 bfd_mach_o_uuid_command *cmd = &command->command.uuid;
2283 asection *bfdsec;
2284 char *sname;
2285 static const char prefix[] = "LC_UUID";
2286
2287 BFD_ASSERT (command->type == BFD_MACH_O_LC_UUID);
2288
2289 if (bfd_seek (abfd, command->offset + 8, SEEK_SET) != 0
2290 || bfd_bread ((void *) cmd->uuid, 16, abfd) != 16)
2291 return -1;
2292
2293 sname = bfd_alloc (abfd, strlen (prefix) + 1);
2294 if (sname == NULL)
2295 return -1;
2296 strcpy (sname, prefix);
2297
2298 bfdsec = bfd_make_section_anyway_with_flags (abfd, sname, SEC_HAS_CONTENTS);
2299 if (bfdsec == NULL)
2300 return -1;
2301
2302 bfdsec->vma = 0;
2303 bfdsec->lma = 0;
2304 bfdsec->size = command->len - 8;
2305 bfdsec->filepos = command->offset + 8;
2306 bfdsec->alignment_power = 0;
2307
2308 cmd->section = bfdsec;
2309
2310 return 0;
2311 }
2312
2313 static int
2314 bfd_mach_o_read_linkedit (bfd *abfd, bfd_mach_o_load_command *command)
2315 {
2316 bfd_mach_o_linkedit_command *cmd = &command->command.linkedit;
2317 char buf[8];
2318
2319 if (bfd_seek (abfd, command->offset + 8, SEEK_SET) != 0
2320 || bfd_bread ((void *) buf, 8, abfd) != 8)
2321 return -1;
2322
2323 cmd->dataoff = bfd_get_32 (abfd, buf + 0);
2324 cmd->datasize = bfd_get_32 (abfd, buf + 4);
2325 return 0;
2326 }
2327
2328 static int
2329 bfd_mach_o_read_str (bfd *abfd, bfd_mach_o_load_command *command)
2330 {
2331 bfd_mach_o_str_command *cmd = &command->command.str;
2332 char buf[4];
2333 unsigned long off;
2334
2335 if (bfd_seek (abfd, command->offset + 8, SEEK_SET) != 0
2336 || bfd_bread ((void *) buf, 4, abfd) != 4)
2337 return -1;
2338
2339 off = bfd_get_32 (abfd, buf + 0);
2340 cmd->stroff = command->offset + off;
2341 cmd->str_len = command->len - off;
2342 cmd->str = bfd_alloc (abfd, cmd->str_len);
2343 if (cmd->str == NULL)
2344 return -1;
2345 if (bfd_seek (abfd, cmd->stroff, SEEK_SET) != 0
2346 || bfd_bread ((void *) cmd->str, cmd->str_len, abfd) != cmd->str_len)
2347 return -1;
2348 return 0;
2349 }
2350
2351 static int
2352 bfd_mach_o_read_dyld_info (bfd *abfd, bfd_mach_o_load_command *command)
2353 {
2354 bfd_mach_o_dyld_info_command *cmd = &command->command.dyld_info;
2355 char buf[40];
2356
2357 if (bfd_seek (abfd, command->offset + 8, SEEK_SET) != 0
2358 || bfd_bread ((void *) buf, sizeof (buf), abfd) != sizeof (buf))
2359 return -1;
2360
2361 cmd->rebase_off = bfd_get_32 (abfd, buf + 0);
2362 cmd->rebase_size = bfd_get_32 (abfd, buf + 4);
2363 cmd->bind_off = bfd_get_32 (abfd, buf + 8);
2364 cmd->bind_size = bfd_get_32 (abfd, buf + 12);
2365 cmd->weak_bind_off = bfd_get_32 (abfd, buf + 16);
2366 cmd->weak_bind_size = bfd_get_32 (abfd, buf + 20);
2367 cmd->lazy_bind_off = bfd_get_32 (abfd, buf + 24);
2368 cmd->lazy_bind_size = bfd_get_32 (abfd, buf + 28);
2369 cmd->export_off = bfd_get_32 (abfd, buf + 32);
2370 cmd->export_size = bfd_get_32 (abfd, buf + 36);
2371 return 0;
2372 }
2373
2374 static int
2375 bfd_mach_o_read_segment (bfd *abfd,
2376 bfd_mach_o_load_command *command,
2377 unsigned int wide)
2378 {
2379 unsigned char buf[64];
2380 bfd_mach_o_segment_command *seg = &command->command.segment;
2381 unsigned long i;
2382
2383 if (wide)
2384 {
2385 BFD_ASSERT (command->type == BFD_MACH_O_LC_SEGMENT_64);
2386
2387 if (bfd_seek (abfd, command->offset + 8, SEEK_SET) != 0
2388 || bfd_bread ((void *) buf, 64, abfd) != 64)
2389 return -1;
2390
2391 memcpy (seg->segname, buf, 16);
2392 seg->segname[16] = '\0';
2393
2394 seg->vmaddr = bfd_h_get_64 (abfd, buf + 16);
2395 seg->vmsize = bfd_h_get_64 (abfd, buf + 24);
2396 seg->fileoff = bfd_h_get_64 (abfd, buf + 32);
2397 seg->filesize = bfd_h_get_64 (abfd, buf + 40);
2398 seg->maxprot = bfd_h_get_32 (abfd, buf + 48);
2399 seg->initprot = bfd_h_get_32 (abfd, buf + 52);
2400 seg->nsects = bfd_h_get_32 (abfd, buf + 56);
2401 seg->flags = bfd_h_get_32 (abfd, buf + 60);
2402 }
2403 else
2404 {
2405 BFD_ASSERT (command->type == BFD_MACH_O_LC_SEGMENT);
2406
2407 if (bfd_seek (abfd, command->offset + 8, SEEK_SET) != 0
2408 || bfd_bread ((void *) buf, 48, abfd) != 48)
2409 return -1;
2410
2411 memcpy (seg->segname, buf, 16);
2412 seg->segname[16] = '\0';
2413
2414 seg->vmaddr = bfd_h_get_32 (abfd, buf + 16);
2415 seg->vmsize = bfd_h_get_32 (abfd, buf + 20);
2416 seg->fileoff = bfd_h_get_32 (abfd, buf + 24);
2417 seg->filesize = bfd_h_get_32 (abfd, buf + 28);
2418 seg->maxprot = bfd_h_get_32 (abfd, buf + 32);
2419 seg->initprot = bfd_h_get_32 (abfd, buf + 36);
2420 seg->nsects = bfd_h_get_32 (abfd, buf + 40);
2421 seg->flags = bfd_h_get_32 (abfd, buf + 44);
2422 }
2423
2424 if (seg->nsects != 0)
2425 {
2426 seg->sections = bfd_alloc (abfd, seg->nsects
2427 * sizeof (bfd_mach_o_section));
2428 if (seg->sections == NULL)
2429 return -1;
2430
2431 for (i = 0; i < seg->nsects; i++)
2432 {
2433 bfd_vma segoff;
2434 if (wide)
2435 segoff = command->offset + BFD_MACH_O_LC_SEGMENT_64_SIZE
2436 + (i * BFD_MACH_O_SECTION_64_SIZE);
2437 else
2438 segoff = command->offset + BFD_MACH_O_LC_SEGMENT_SIZE
2439 + (i * BFD_MACH_O_SECTION_SIZE);
2440
2441 if (bfd_mach_o_read_section
2442 (abfd, &seg->sections[i], segoff, seg->initprot, wide) != 0)
2443 return -1;
2444 }
2445 }
2446
2447 return 0;
2448 }
2449
2450 static int
2451 bfd_mach_o_read_segment_32 (bfd *abfd, bfd_mach_o_load_command *command)
2452 {
2453 return bfd_mach_o_read_segment (abfd, command, 0);
2454 }
2455
2456 static int
2457 bfd_mach_o_read_segment_64 (bfd *abfd, bfd_mach_o_load_command *command)
2458 {
2459 return bfd_mach_o_read_segment (abfd, command, 1);
2460 }
2461
2462 static int
2463 bfd_mach_o_read_command (bfd *abfd, bfd_mach_o_load_command *command)
2464 {
2465 unsigned char buf[8];
2466
2467 /* Read command type and length. */
2468 if (bfd_seek (abfd, command->offset, SEEK_SET) != 0
2469 || bfd_bread ((void *) buf, 8, abfd) != 8)
2470 return -1;
2471
2472 command->type = bfd_h_get_32 (abfd, buf) & ~BFD_MACH_O_LC_REQ_DYLD;
2473 command->type_required = (bfd_h_get_32 (abfd, buf) & BFD_MACH_O_LC_REQ_DYLD
2474 ? TRUE : FALSE);
2475 command->len = bfd_h_get_32 (abfd, buf + 4);
2476
2477 switch (command->type)
2478 {
2479 case BFD_MACH_O_LC_SEGMENT:
2480 if (bfd_mach_o_read_segment_32 (abfd, command) != 0)
2481 return -1;
2482 break;
2483 case BFD_MACH_O_LC_SEGMENT_64:
2484 if (bfd_mach_o_read_segment_64 (abfd, command) != 0)
2485 return -1;
2486 break;
2487 case BFD_MACH_O_LC_SYMTAB:
2488 if (bfd_mach_o_read_symtab (abfd, command) != 0)
2489 return -1;
2490 break;
2491 case BFD_MACH_O_LC_SYMSEG:
2492 break;
2493 case BFD_MACH_O_LC_THREAD:
2494 case BFD_MACH_O_LC_UNIXTHREAD:
2495 if (bfd_mach_o_read_thread (abfd, command) != 0)
2496 return -1;
2497 break;
2498 case BFD_MACH_O_LC_LOAD_DYLINKER:
2499 case BFD_MACH_O_LC_ID_DYLINKER:
2500 if (bfd_mach_o_read_dylinker (abfd, command) != 0)
2501 return -1;
2502 break;
2503 case BFD_MACH_O_LC_LOAD_DYLIB:
2504 case BFD_MACH_O_LC_ID_DYLIB:
2505 case BFD_MACH_O_LC_LOAD_WEAK_DYLIB:
2506 case BFD_MACH_O_LC_REEXPORT_DYLIB:
2507 if (bfd_mach_o_read_dylib (abfd, command) != 0)
2508 return -1;
2509 break;
2510 case BFD_MACH_O_LC_PREBOUND_DYLIB:
2511 if (bfd_mach_o_read_prebound_dylib (abfd, command) != 0)
2512 return -1;
2513 break;
2514 case BFD_MACH_O_LC_LOADFVMLIB:
2515 case BFD_MACH_O_LC_IDFVMLIB:
2516 case BFD_MACH_O_LC_IDENT:
2517 case BFD_MACH_O_LC_FVMFILE:
2518 case BFD_MACH_O_LC_PREPAGE:
2519 case BFD_MACH_O_LC_ROUTINES:
2520 break;
2521 case BFD_MACH_O_LC_SUB_FRAMEWORK:
2522 case BFD_MACH_O_LC_SUB_UMBRELLA:
2523 case BFD_MACH_O_LC_SUB_LIBRARY:
2524 case BFD_MACH_O_LC_SUB_CLIENT:
2525 case BFD_MACH_O_LC_RPATH:
2526 if (bfd_mach_o_read_str (abfd, command) != 0)
2527 return -1;
2528 break;
2529 case BFD_MACH_O_LC_DYSYMTAB:
2530 if (bfd_mach_o_read_dysymtab (abfd, command) != 0)
2531 return -1;
2532 break;
2533 case BFD_MACH_O_LC_TWOLEVEL_HINTS:
2534 case BFD_MACH_O_LC_PREBIND_CKSUM:
2535 break;
2536 case BFD_MACH_O_LC_UUID:
2537 if (bfd_mach_o_read_uuid (abfd, command) != 0)
2538 return -1;
2539 break;
2540 case BFD_MACH_O_LC_CODE_SIGNATURE:
2541 case BFD_MACH_O_LC_SEGMENT_SPLIT_INFO:
2542 if (bfd_mach_o_read_linkedit (abfd, command) != 0)
2543 return -1;
2544 break;
2545 case BFD_MACH_O_LC_DYLD_INFO:
2546 if (bfd_mach_o_read_dyld_info (abfd, command) != 0)
2547 return -1;
2548 break;
2549 default:
2550 fprintf (stderr, "unable to read unknown load command 0x%lx\n",
2551 (unsigned long) command->type);
2552 break;
2553 }
2554
2555 return 0;
2556 }
2557
2558 static void
2559 bfd_mach_o_flatten_sections (bfd *abfd)
2560 {
2561 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
2562 long csect = 0;
2563 unsigned long i, j;
2564
2565 /* Count total number of sections. */
2566 mdata->nsects = 0;
2567
2568 for (i = 0; i < mdata->header.ncmds; i++)
2569 {
2570 if (mdata->commands[i].type == BFD_MACH_O_LC_SEGMENT
2571 || mdata->commands[i].type == BFD_MACH_O_LC_SEGMENT_64)
2572 {
2573 bfd_mach_o_segment_command *seg;
2574
2575 seg = &mdata->commands[i].command.segment;
2576 mdata->nsects += seg->nsects;
2577 }
2578 }
2579
2580 /* Allocate sections array. */
2581 mdata->sections = bfd_alloc (abfd,
2582 mdata->nsects * sizeof (bfd_mach_o_section *));
2583
2584 /* Fill the array. */
2585 csect = 0;
2586
2587 for (i = 0; i < mdata->header.ncmds; i++)
2588 {
2589 if (mdata->commands[i].type == BFD_MACH_O_LC_SEGMENT
2590 || mdata->commands[i].type == BFD_MACH_O_LC_SEGMENT_64)
2591 {
2592 bfd_mach_o_segment_command *seg;
2593
2594 seg = &mdata->commands[i].command.segment;
2595 BFD_ASSERT (csect + seg->nsects <= mdata->nsects);
2596
2597 for (j = 0; j < seg->nsects; j++)
2598 mdata->sections[csect++] = &seg->sections[j];
2599 }
2600 }
2601 }
2602
2603 int
2604 bfd_mach_o_scan_start_address (bfd *abfd)
2605 {
2606 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
2607 bfd_mach_o_thread_command *cmd = NULL;
2608 unsigned long i;
2609
2610 for (i = 0; i < mdata->header.ncmds; i++)
2611 {
2612 if ((mdata->commands[i].type == BFD_MACH_O_LC_THREAD) ||
2613 (mdata->commands[i].type == BFD_MACH_O_LC_UNIXTHREAD))
2614 {
2615 if (cmd == NULL)
2616 cmd = &mdata->commands[i].command.thread;
2617 else
2618 return 0;
2619 }
2620 }
2621
2622 if (cmd == NULL)
2623 return 0;
2624
2625 for (i = 0; i < cmd->nflavours; i++)
2626 {
2627 if ((mdata->header.cputype == BFD_MACH_O_CPU_TYPE_I386)
2628 && (cmd->flavours[i].flavour
2629 == (unsigned long) BFD_MACH_O_x86_THREAD_STATE32))
2630 {
2631 unsigned char buf[4];
2632
2633 if (bfd_seek (abfd, cmd->flavours[i].offset + 40, SEEK_SET) != 0
2634 || bfd_bread (buf, 4, abfd) != 4)
2635 return -1;
2636
2637 abfd->start_address = bfd_h_get_32 (abfd, buf);
2638 }
2639 else if ((mdata->header.cputype == BFD_MACH_O_CPU_TYPE_POWERPC)
2640 && (cmd->flavours[i].flavour == BFD_MACH_O_PPC_THREAD_STATE))
2641 {
2642 unsigned char buf[4];
2643
2644 if (bfd_seek (abfd, cmd->flavours[i].offset + 0, SEEK_SET) != 0
2645 || bfd_bread (buf, 4, abfd) != 4)
2646 return -1;
2647
2648 abfd->start_address = bfd_h_get_32 (abfd, buf);
2649 }
2650 else if ((mdata->header.cputype == BFD_MACH_O_CPU_TYPE_POWERPC_64)
2651 && (cmd->flavours[i].flavour == BFD_MACH_O_PPC_THREAD_STATE64))
2652 {
2653 unsigned char buf[8];
2654
2655 if (bfd_seek (abfd, cmd->flavours[i].offset + 0, SEEK_SET) != 0
2656 || bfd_bread (buf, 8, abfd) != 8)
2657 return -1;
2658
2659 abfd->start_address = bfd_h_get_64 (abfd, buf);
2660 }
2661 else if ((mdata->header.cputype == BFD_MACH_O_CPU_TYPE_X86_64)
2662 && (cmd->flavours[i].flavour == BFD_MACH_O_x86_THREAD_STATE64))
2663 {
2664 unsigned char buf[8];
2665
2666 if (bfd_seek (abfd, cmd->flavours[i].offset + (16 * 8), SEEK_SET) != 0
2667 || bfd_bread (buf, 8, abfd) != 8)
2668 return -1;
2669
2670 abfd->start_address = bfd_h_get_64 (abfd, buf);
2671 }
2672 }
2673
2674 return 0;
2675 }
2676
2677 int
2678 bfd_mach_o_scan (bfd *abfd,
2679 bfd_mach_o_header *header,
2680 bfd_mach_o_data_struct *mdata)
2681 {
2682 unsigned int i;
2683 enum bfd_architecture cputype;
2684 unsigned long cpusubtype;
2685 unsigned int hdrsize;
2686
2687 hdrsize = mach_o_wide_p (header) ?
2688 BFD_MACH_O_HEADER_64_SIZE : BFD_MACH_O_HEADER_SIZE;
2689
2690 mdata->header = *header;
2691
2692 abfd->flags = abfd->flags & BFD_IN_MEMORY;
2693 switch (header->filetype)
2694 {
2695 case BFD_MACH_O_MH_OBJECT:
2696 abfd->flags |= HAS_RELOC;
2697 break;
2698 case BFD_MACH_O_MH_EXECUTE:
2699 abfd->flags |= EXEC_P;
2700 break;
2701 case BFD_MACH_O_MH_DYLIB:
2702 case BFD_MACH_O_MH_BUNDLE:
2703 abfd->flags |= DYNAMIC;
2704 break;
2705 }
2706
2707 abfd->tdata.mach_o_data = mdata;
2708
2709 bfd_mach_o_convert_architecture (header->cputype, header->cpusubtype,
2710 &cputype, &cpusubtype);
2711 if (cputype == bfd_arch_unknown)
2712 {
2713 fprintf (stderr, "bfd_mach_o_scan: unknown architecture 0x%lx/0x%lx\n",
2714 header->cputype, header->cpusubtype);
2715 return -1;
2716 }
2717
2718 bfd_set_arch_mach (abfd, cputype, cpusubtype);
2719
2720 if (header->ncmds != 0)
2721 {
2722 mdata->commands = bfd_alloc
2723 (abfd, header->ncmds * sizeof (bfd_mach_o_load_command));
2724 if (mdata->commands == NULL)
2725 return -1;
2726
2727 for (i = 0; i < header->ncmds; i++)
2728 {
2729 bfd_mach_o_load_command *cur = &mdata->commands[i];
2730
2731 if (i == 0)
2732 cur->offset = hdrsize;
2733 else
2734 {
2735 bfd_mach_o_load_command *prev = &mdata->commands[i - 1];
2736 cur->offset = prev->offset + prev->len;
2737 }
2738
2739 if (bfd_mach_o_read_command (abfd, cur) < 0)
2740 return -1;
2741 }
2742 }
2743
2744 if (bfd_mach_o_scan_start_address (abfd) < 0)
2745 return -1;
2746
2747 bfd_mach_o_flatten_sections (abfd);
2748 return 0;
2749 }
2750
2751 bfd_boolean
2752 bfd_mach_o_mkobject_init (bfd *abfd)
2753 {
2754 bfd_mach_o_data_struct *mdata = NULL;
2755
2756 mdata = bfd_alloc (abfd, sizeof (bfd_mach_o_data_struct));
2757 if (mdata == NULL)
2758 return FALSE;
2759 abfd->tdata.mach_o_data = mdata;
2760
2761 mdata->header.magic = 0;
2762 mdata->header.cputype = 0;
2763 mdata->header.cpusubtype = 0;
2764 mdata->header.filetype = 0;
2765 mdata->header.ncmds = 0;
2766 mdata->header.sizeofcmds = 0;
2767 mdata->header.flags = 0;
2768 mdata->header.byteorder = BFD_ENDIAN_UNKNOWN;
2769 mdata->commands = NULL;
2770 mdata->nsects = 0;
2771 mdata->sections = NULL;
2772
2773 return TRUE;
2774 }
2775
2776 const bfd_target *
2777 bfd_mach_o_header_p (bfd *abfd,
2778 bfd_mach_o_filetype filetype,
2779 bfd_mach_o_cpu_type cputype)
2780 {
2781 struct bfd_preserve preserve;
2782 bfd_mach_o_header header;
2783
2784 preserve.marker = NULL;
2785 if (!bfd_mach_o_read_header (abfd, &header))
2786 goto wrong;
2787
2788 if (! (header.byteorder == BFD_ENDIAN_BIG
2789 || header.byteorder == BFD_ENDIAN_LITTLE))
2790 {
2791 fprintf (stderr, "unknown header byte-order value 0x%lx\n",
2792 (unsigned long) header.byteorder);
2793 goto wrong;
2794 }
2795
2796 if (! ((header.byteorder == BFD_ENDIAN_BIG
2797 && abfd->xvec->byteorder == BFD_ENDIAN_BIG
2798 && abfd->xvec->header_byteorder == BFD_ENDIAN_BIG)
2799 || (header.byteorder == BFD_ENDIAN_LITTLE
2800 && abfd->xvec->byteorder == BFD_ENDIAN_LITTLE
2801 && abfd->xvec->header_byteorder == BFD_ENDIAN_LITTLE)))
2802 goto wrong;
2803
2804 /* Check cputype and filetype.
2805 In case of wildcard, do not accept magics that are handled by existing
2806 targets. */
2807 if (cputype)
2808 {
2809 if (header.cputype != cputype)
2810 goto wrong;
2811 }
2812 else
2813 {
2814 switch (header.cputype)
2815 {
2816 case BFD_MACH_O_CPU_TYPE_I386:
2817 /* Handled by mach-o-i386 */
2818 goto wrong;
2819 default:
2820 break;
2821 }
2822 }
2823 if (filetype)
2824 {
2825 if (header.filetype != filetype)
2826 goto wrong;
2827 }
2828 else
2829 {
2830 switch (header.filetype)
2831 {
2832 case BFD_MACH_O_MH_CORE:
2833 /* Handled by core_p */
2834 goto wrong;
2835 default:
2836 break;
2837 }
2838 }
2839
2840 preserve.marker = bfd_zalloc (abfd, sizeof (bfd_mach_o_data_struct));
2841 if (preserve.marker == NULL
2842 || !bfd_preserve_save (abfd, &preserve))
2843 goto fail;
2844
2845 if (bfd_mach_o_scan (abfd, &header,
2846 (bfd_mach_o_data_struct *) preserve.marker) != 0)
2847 goto wrong;
2848
2849 bfd_preserve_finish (abfd, &preserve);
2850 return abfd->xvec;
2851
2852 wrong:
2853 bfd_set_error (bfd_error_wrong_format);
2854
2855 fail:
2856 if (preserve.marker != NULL)
2857 bfd_preserve_restore (abfd, &preserve);
2858 return NULL;
2859 }
2860
2861 static const bfd_target *
2862 bfd_mach_o_gen_object_p (bfd *abfd)
2863 {
2864 return bfd_mach_o_header_p (abfd, 0, 0);
2865 }
2866
2867 static const bfd_target *
2868 bfd_mach_o_gen_core_p (bfd *abfd)
2869 {
2870 return bfd_mach_o_header_p (abfd, BFD_MACH_O_MH_CORE, 0);
2871 }
2872
2873 typedef struct mach_o_fat_archentry
2874 {
2875 unsigned long cputype;
2876 unsigned long cpusubtype;
2877 unsigned long offset;
2878 unsigned long size;
2879 unsigned long align;
2880 } mach_o_fat_archentry;
2881
2882 typedef struct mach_o_fat_data_struct
2883 {
2884 unsigned long magic;
2885 unsigned long nfat_arch;
2886 mach_o_fat_archentry *archentries;
2887 } mach_o_fat_data_struct;
2888
2889 const bfd_target *
2890 bfd_mach_o_archive_p (bfd *abfd)
2891 {
2892 mach_o_fat_data_struct *adata = NULL;
2893 unsigned char buf[20];
2894 unsigned long i;
2895
2896 if (bfd_seek (abfd, 0, SEEK_SET) != 0
2897 || bfd_bread ((void *) buf, 8, abfd) != 8)
2898 goto error;
2899
2900 adata = bfd_alloc (abfd, sizeof (mach_o_fat_data_struct));
2901 if (adata == NULL)
2902 goto error;
2903
2904 adata->magic = bfd_getb32 (buf);
2905 adata->nfat_arch = bfd_getb32 (buf + 4);
2906 if (adata->magic != 0xcafebabe)
2907 goto error;
2908 /* Avoid matching Java bytecode files, which have the same magic number.
2909 In the Java bytecode file format this field contains the JVM version,
2910 which starts at 43.0. */
2911 if (adata->nfat_arch > 30)
2912 goto error;
2913
2914 adata->archentries =
2915 bfd_alloc (abfd, adata->nfat_arch * sizeof (mach_o_fat_archentry));
2916 if (adata->archentries == NULL)
2917 goto error;
2918
2919 for (i = 0; i < adata->nfat_arch; i++)
2920 {
2921 if (bfd_seek (abfd, 8 + 20 * i, SEEK_SET) != 0
2922 || bfd_bread ((void *) buf, 20, abfd) != 20)
2923 goto error;
2924 adata->archentries[i].cputype = bfd_getb32 (buf);
2925 adata->archentries[i].cpusubtype = bfd_getb32 (buf + 4);
2926 adata->archentries[i].offset = bfd_getb32 (buf + 8);
2927 adata->archentries[i].size = bfd_getb32 (buf + 12);
2928 adata->archentries[i].align = bfd_getb32 (buf + 16);
2929 }
2930
2931 abfd->tdata.mach_o_fat_data = adata;
2932 return abfd->xvec;
2933
2934 error:
2935 if (adata != NULL)
2936 bfd_release (abfd, adata);
2937 bfd_set_error (bfd_error_wrong_format);
2938 return NULL;
2939 }
2940
2941 bfd *
2942 bfd_mach_o_openr_next_archived_file (bfd *archive, bfd *prev)
2943 {
2944 mach_o_fat_data_struct *adata;
2945 mach_o_fat_archentry *entry = NULL;
2946 unsigned long i;
2947 bfd *nbfd;
2948 enum bfd_architecture arch_type;
2949 unsigned long arch_subtype;
2950
2951 adata = (mach_o_fat_data_struct *) archive->tdata.mach_o_fat_data;
2952 BFD_ASSERT (adata != NULL);
2953
2954 /* Find index of previous entry. */
2955 if (prev == NULL)
2956 i = 0; /* Start at first one. */
2957 else
2958 {
2959 for (i = 0; i < adata->nfat_arch; i++)
2960 {
2961 if (adata->archentries[i].offset == prev->origin)
2962 break;
2963 }
2964
2965 if (i == adata->nfat_arch)
2966 {
2967 /* Not found. */
2968 bfd_set_error (bfd_error_bad_value);
2969 return NULL;
2970 }
2971 i++; /* Get next entry. */
2972 }
2973
2974 if (i >= adata->nfat_arch)
2975 {
2976 bfd_set_error (bfd_error_no_more_archived_files);
2977 return NULL;
2978 }
2979
2980 entry = &adata->archentries[i];
2981 nbfd = _bfd_new_bfd_contained_in (archive);
2982 if (nbfd == NULL)
2983 return NULL;
2984
2985 nbfd->origin = entry->offset;
2986
2987 bfd_mach_o_convert_architecture (entry->cputype, entry->cpusubtype,
2988 &arch_type, &arch_subtype);
2989 /* Create the member filename.
2990 Use FILENAME:ARCH_NAME. */
2991 {
2992 char *s = NULL;
2993 const char *arch_name;
2994 size_t arch_file_len = strlen (bfd_get_filename (archive));
2995
2996 arch_name = bfd_printable_arch_mach (arch_type, arch_subtype);
2997 s = bfd_malloc (arch_file_len + 1 + strlen (arch_name) + 1);
2998 if (s == NULL)
2999 return NULL;
3000 memcpy (s, bfd_get_filename (archive), arch_file_len);
3001 s[arch_file_len] = ':';
3002 strcpy (s + arch_file_len + 1, arch_name);
3003 nbfd->filename = s;
3004 }
3005 nbfd->iostream = NULL;
3006 bfd_set_arch_mach (nbfd, arch_type, arch_subtype);
3007
3008 return nbfd;
3009 }
3010
3011 /* If ABFD format is FORMAT and architecture is ARCH, return it.
3012 If ABFD is a fat image containing a member that corresponds to FORMAT
3013 and ARCH, returns it.
3014 In other case, returns NULL.
3015 This function allows transparent uses of fat images. */
3016 bfd *
3017 bfd_mach_o_fat_extract (bfd *abfd,
3018 bfd_format format,
3019 const bfd_arch_info_type *arch)
3020 {
3021 bfd *res;
3022 mach_o_fat_data_struct *adata;
3023 unsigned int i;
3024
3025 if (bfd_check_format (abfd, format))
3026 {
3027 if (bfd_get_arch_info (abfd) == arch)
3028 return abfd;
3029 return NULL;
3030 }
3031 if (!bfd_check_format (abfd, bfd_archive)
3032 || abfd->xvec != &mach_o_fat_vec)
3033 return NULL;
3034
3035 /* This is a Mach-O fat image. */
3036 adata = (mach_o_fat_data_struct *) abfd->tdata.mach_o_fat_data;
3037 BFD_ASSERT (adata != NULL);
3038
3039 for (i = 0; i < adata->nfat_arch; i++)
3040 {
3041 struct mach_o_fat_archentry *e = &adata->archentries[i];
3042 enum bfd_architecture cpu_type;
3043 unsigned long cpu_subtype;
3044
3045 bfd_mach_o_convert_architecture (e->cputype, e->cpusubtype,
3046 &cpu_type, &cpu_subtype);
3047 if (cpu_type != arch->arch || cpu_subtype != arch->mach)
3048 continue;
3049
3050 /* The architecture is found. */
3051 res = _bfd_new_bfd_contained_in (abfd);
3052 if (res == NULL)
3053 return NULL;
3054
3055 res->origin = e->offset;
3056
3057 res->filename = strdup (abfd->filename);
3058 res->iostream = NULL;
3059
3060 if (bfd_check_format (res, format))
3061 {
3062 BFD_ASSERT (bfd_get_arch_info (res) == arch);
3063 return res;
3064 }
3065 bfd_close (res);
3066 return NULL;
3067 }
3068
3069 return NULL;
3070 }
3071
3072 int
3073 bfd_mach_o_lookup_section (bfd *abfd,
3074 asection *section,
3075 bfd_mach_o_load_command **mcommand,
3076 bfd_mach_o_section **msection)
3077 {
3078 struct mach_o_data_struct *md = bfd_mach_o_get_data (abfd);
3079 unsigned int i, j, num;
3080
3081 bfd_mach_o_load_command *ncmd = NULL;
3082 bfd_mach_o_section *nsect = NULL;
3083
3084 BFD_ASSERT (mcommand != NULL);
3085 BFD_ASSERT (msection != NULL);
3086
3087 num = 0;
3088 for (i = 0; i < md->header.ncmds; i++)
3089 {
3090 struct bfd_mach_o_load_command *cmd = &md->commands[i];
3091 struct bfd_mach_o_segment_command *seg = NULL;
3092
3093 if (cmd->type != BFD_MACH_O_LC_SEGMENT
3094 || cmd->type != BFD_MACH_O_LC_SEGMENT_64)
3095 continue;
3096 seg = &cmd->command.segment;
3097
3098 for (j = 0; j < seg->nsects; j++)
3099 {
3100 struct bfd_mach_o_section *sect = &seg->sections[j];
3101
3102 if (sect->bfdsection == section)
3103 {
3104 if (num == 0)
3105 {
3106 nsect = sect;
3107 ncmd = cmd;
3108 }
3109 num++;
3110 }
3111 }
3112 }
3113
3114 *mcommand = ncmd;
3115 *msection = nsect;
3116 return num;
3117 }
3118
3119 int
3120 bfd_mach_o_lookup_command (bfd *abfd,
3121 bfd_mach_o_load_command_type type,
3122 bfd_mach_o_load_command **mcommand)
3123 {
3124 struct mach_o_data_struct *md = bfd_mach_o_get_data (abfd);
3125 bfd_mach_o_load_command *ncmd = NULL;
3126 unsigned int i, num;
3127
3128 BFD_ASSERT (md != NULL);
3129 BFD_ASSERT (mcommand != NULL);
3130
3131 num = 0;
3132 for (i = 0; i < md->header.ncmds; i++)
3133 {
3134 struct bfd_mach_o_load_command *cmd = &md->commands[i];
3135
3136 if (cmd->type != type)
3137 continue;
3138
3139 if (num == 0)
3140 ncmd = cmd;
3141 num++;
3142 }
3143
3144 *mcommand = ncmd;
3145 return num;
3146 }
3147
3148 unsigned long
3149 bfd_mach_o_stack_addr (enum bfd_mach_o_cpu_type type)
3150 {
3151 switch (type)
3152 {
3153 case BFD_MACH_O_CPU_TYPE_MC680x0:
3154 return 0x04000000;
3155 case BFD_MACH_O_CPU_TYPE_MC88000:
3156 return 0xffffe000;
3157 case BFD_MACH_O_CPU_TYPE_POWERPC:
3158 return 0xc0000000;
3159 case BFD_MACH_O_CPU_TYPE_I386:
3160 return 0xc0000000;
3161 case BFD_MACH_O_CPU_TYPE_SPARC:
3162 return 0xf0000000;
3163 case BFD_MACH_O_CPU_TYPE_I860:
3164 return 0;
3165 case BFD_MACH_O_CPU_TYPE_HPPA:
3166 return 0xc0000000 - 0x04000000;
3167 default:
3168 return 0;
3169 }
3170 }
3171
3172 typedef struct bfd_mach_o_xlat_name
3173 {
3174 const char *name;
3175 unsigned long val;
3176 }
3177 bfd_mach_o_xlat_name;
3178
3179 static void
3180 bfd_mach_o_print_flags (const bfd_mach_o_xlat_name *table,
3181 unsigned long val,
3182 FILE *file)
3183 {
3184 int first = 1;
3185
3186 for (; table->name; table++)
3187 {
3188 if (table->val & val)
3189 {
3190 if (!first)
3191 fprintf (file, "+");
3192 fprintf (file, "%s", table->name);
3193 val &= ~table->val;
3194 first = 0;
3195 }
3196 }
3197 if (val)
3198 {
3199 if (!first)
3200 fprintf (file, "+");
3201 fprintf (file, "0x%lx", val);
3202 return;
3203 }
3204 if (first)
3205 fprintf (file, "-");
3206 }
3207
3208 static const char *
3209 bfd_mach_o_get_name (const bfd_mach_o_xlat_name *table, unsigned long val)
3210 {
3211 for (; table->name; table++)
3212 if (table->val == val)
3213 return table->name;
3214 return "*UNKNOWN*";
3215 }
3216
3217 static bfd_mach_o_xlat_name bfd_mach_o_cpu_name[] =
3218 {
3219 { "vax", BFD_MACH_O_CPU_TYPE_VAX },
3220 { "mc680x0", BFD_MACH_O_CPU_TYPE_MC680x0 },
3221 { "i386", BFD_MACH_O_CPU_TYPE_I386 },
3222 { "mips", BFD_MACH_O_CPU_TYPE_MIPS },
3223 { "mc98000", BFD_MACH_O_CPU_TYPE_MC98000 },
3224 { "hppa", BFD_MACH_O_CPU_TYPE_HPPA },
3225 { "arm", BFD_MACH_O_CPU_TYPE_ARM },
3226 { "mc88000", BFD_MACH_O_CPU_TYPE_MC88000 },
3227 { "sparc", BFD_MACH_O_CPU_TYPE_SPARC },
3228 { "i860", BFD_MACH_O_CPU_TYPE_I860 },
3229 { "alpha", BFD_MACH_O_CPU_TYPE_ALPHA },
3230 { "powerpc", BFD_MACH_O_CPU_TYPE_POWERPC },
3231 { "powerpc_64", BFD_MACH_O_CPU_TYPE_POWERPC_64 },
3232 { "x86_64", BFD_MACH_O_CPU_TYPE_X86_64 },
3233 { NULL, 0}
3234 };
3235
3236 static bfd_mach_o_xlat_name bfd_mach_o_filetype_name[] =
3237 {
3238 { "object", BFD_MACH_O_MH_OBJECT },
3239 { "execute", BFD_MACH_O_MH_EXECUTE },
3240 { "fvmlib", BFD_MACH_O_MH_FVMLIB },
3241 { "core", BFD_MACH_O_MH_CORE },
3242 { "preload", BFD_MACH_O_MH_PRELOAD },
3243 { "dylib", BFD_MACH_O_MH_DYLIB },
3244 { "dylinker", BFD_MACH_O_MH_DYLINKER },
3245 { "bundle", BFD_MACH_O_MH_BUNDLE },
3246 { "dylib_stub", BFD_MACH_O_MH_DYLIB_STUB },
3247 { "dym", BFD_MACH_O_MH_DSYM },
3248 { "kext_bundle", BFD_MACH_O_MH_KEXT_BUNDLE },
3249 { NULL, 0}
3250 };
3251
3252 static bfd_mach_o_xlat_name bfd_mach_o_header_flags_name[] =
3253 {
3254 { "noundefs", BFD_MACH_O_MH_NOUNDEFS },
3255 { "incrlink", BFD_MACH_O_MH_INCRLINK },
3256 { "dyldlink", BFD_MACH_O_MH_DYLDLINK },
3257 { "bindatload", BFD_MACH_O_MH_BINDATLOAD },
3258 { "prebound", BFD_MACH_O_MH_PREBOUND },
3259 { "split_segs", BFD_MACH_O_MH_SPLIT_SEGS },
3260 { "lazy_init", BFD_MACH_O_MH_LAZY_INIT },
3261 { "twolevel", BFD_MACH_O_MH_TWOLEVEL },
3262 { "force_flat", BFD_MACH_O_MH_FORCE_FLAT },
3263 { "nomultidefs", BFD_MACH_O_MH_NOMULTIDEFS },
3264 { "nofixprebinding", BFD_MACH_O_MH_NOFIXPREBINDING },
3265 { "prebindable", BFD_MACH_O_MH_PREBINDABLE },
3266 { "allmodsbound", BFD_MACH_O_MH_ALLMODSBOUND },
3267 { "subsections_via_symbols", BFD_MACH_O_MH_SUBSECTIONS_VIA_SYMBOLS },
3268 { "canonical", BFD_MACH_O_MH_CANONICAL },
3269 { "weak_defines", BFD_MACH_O_MH_WEAK_DEFINES },
3270 { "binds_to_weak", BFD_MACH_O_MH_BINDS_TO_WEAK },
3271 { "allow_stack_execution", BFD_MACH_O_MH_ALLOW_STACK_EXECUTION },
3272 { "root_safe", BFD_MACH_O_MH_ROOT_SAFE },
3273 { "setuid_safe", BFD_MACH_O_MH_SETUID_SAFE },
3274 { "no_reexported_dylibs", BFD_MACH_O_MH_NO_REEXPORTED_DYLIBS },
3275 { "pie", BFD_MACH_O_MH_PIE },
3276 { NULL, 0}
3277 };
3278
3279 static bfd_mach_o_xlat_name bfd_mach_o_section_type_name[] =
3280 {
3281 { "regular", BFD_MACH_O_S_REGULAR},
3282 { "zerofill", BFD_MACH_O_S_ZEROFILL},
3283 { "cstring_literals", BFD_MACH_O_S_CSTRING_LITERALS},
3284 { "4byte_literals", BFD_MACH_O_S_4BYTE_LITERALS},
3285 { "8byte_literals", BFD_MACH_O_S_8BYTE_LITERALS},
3286 { "literal_pointers", BFD_MACH_O_S_LITERAL_POINTERS},
3287 { "non_lazy_symbol_pointers", BFD_MACH_O_S_NON_LAZY_SYMBOL_POINTERS},
3288 { "lazy_symbol_pointers", BFD_MACH_O_S_LAZY_SYMBOL_POINTERS},
3289 { "symbol_stubs", BFD_MACH_O_S_SYMBOL_STUBS},
3290 { "mod_init_func_pointers", BFD_MACH_O_S_MOD_INIT_FUNC_POINTERS},
3291 { "mod_fini_func_pointers", BFD_MACH_O_S_MOD_FINI_FUNC_POINTERS},
3292 { "coalesced", BFD_MACH_O_S_COALESCED},
3293 { "gb_zerofill", BFD_MACH_O_S_GB_ZEROFILL},
3294 { "interposing", BFD_MACH_O_S_INTERPOSING},
3295 { "16byte_literals", BFD_MACH_O_S_16BYTE_LITERALS},
3296 { "dtrace_dof", BFD_MACH_O_S_DTRACE_DOF},
3297 { "lazy_dylib_symbol_pointers", BFD_MACH_O_S_LAZY_DYLIB_SYMBOL_POINTERS},
3298 { NULL, 0}
3299 };
3300
3301 static bfd_mach_o_xlat_name bfd_mach_o_section_attribute_name[] =
3302 {
3303 { "loc_reloc", BFD_MACH_O_S_ATTR_LOC_RELOC },
3304 { "ext_reloc", BFD_MACH_O_S_ATTR_EXT_RELOC },
3305 { "some_instructions", BFD_MACH_O_S_ATTR_SOME_INSTRUCTIONS },
3306 { "debug", BFD_MACH_O_S_ATTR_DEBUG },
3307 { "modifying_code", BFD_MACH_O_S_SELF_MODIFYING_CODE },
3308 { "live_support", BFD_MACH_O_S_ATTR_LIVE_SUPPORT },
3309 { "no_dead_strip", BFD_MACH_O_S_ATTR_NO_DEAD_STRIP },
3310 { "strip_static_syms", BFD_MACH_O_S_ATTR_STRIP_STATIC_SYMS },
3311 { "no_toc", BFD_MACH_O_S_ATTR_NO_TOC },
3312 { "pure_instructions", BFD_MACH_O_S_ATTR_PURE_INSTRUCTIONS },
3313 { NULL, 0}
3314 };
3315
3316 static bfd_mach_o_xlat_name bfd_mach_o_load_command_name[] =
3317 {
3318 { "segment", BFD_MACH_O_LC_SEGMENT},
3319 { "symtab", BFD_MACH_O_LC_SYMTAB},
3320 { "symseg", BFD_MACH_O_LC_SYMSEG},
3321 { "thread", BFD_MACH_O_LC_THREAD},
3322 { "unixthread", BFD_MACH_O_LC_UNIXTHREAD},
3323 { "loadfvmlib", BFD_MACH_O_LC_LOADFVMLIB},
3324 { "idfvmlib", BFD_MACH_O_LC_IDFVMLIB},
3325 { "ident", BFD_MACH_O_LC_IDENT},
3326 { "fvmfile", BFD_MACH_O_LC_FVMFILE},
3327 { "prepage", BFD_MACH_O_LC_PREPAGE},
3328 { "dysymtab", BFD_MACH_O_LC_DYSYMTAB},
3329 { "load_dylib", BFD_MACH_O_LC_LOAD_DYLIB},
3330 { "id_dylib", BFD_MACH_O_LC_ID_DYLIB},
3331 { "load_dylinker", BFD_MACH_O_LC_LOAD_DYLINKER},
3332 { "id_dylinker", BFD_MACH_O_LC_ID_DYLINKER},
3333 { "prebound_dylib", BFD_MACH_O_LC_PREBOUND_DYLIB},
3334 { "routines", BFD_MACH_O_LC_ROUTINES},
3335 { "sub_framework", BFD_MACH_O_LC_SUB_FRAMEWORK},
3336 { "sub_umbrella", BFD_MACH_O_LC_SUB_UMBRELLA},
3337 { "sub_client", BFD_MACH_O_LC_SUB_CLIENT},
3338 { "sub_library", BFD_MACH_O_LC_SUB_LIBRARY},
3339 { "twolevel_hints", BFD_MACH_O_LC_TWOLEVEL_HINTS},
3340 { "prebind_cksum", BFD_MACH_O_LC_PREBIND_CKSUM},
3341 { "load_weak_dylib", BFD_MACH_O_LC_LOAD_WEAK_DYLIB},
3342 { "segment_64", BFD_MACH_O_LC_SEGMENT_64},
3343 { "routines_64", BFD_MACH_O_LC_ROUTINES_64},
3344 { "uuid", BFD_MACH_O_LC_UUID},
3345 { "rpath", BFD_MACH_O_LC_RPATH},
3346 { "code_signature", BFD_MACH_O_LC_CODE_SIGNATURE},
3347 { "segment_split_info", BFD_MACH_O_LC_SEGMENT_SPLIT_INFO},
3348 { "reexport_dylib", BFD_MACH_O_LC_REEXPORT_DYLIB},
3349 { "lazy_load_dylib", BFD_MACH_O_LC_LAZY_LOAD_DYLIB},
3350 { "encryption_info", BFD_MACH_O_LC_ENCRYPTION_INFO},
3351 { "dyld_info", BFD_MACH_O_LC_DYLD_INFO},
3352 { NULL, 0}
3353 };
3354
3355 static void
3356 bfd_mach_o_print_private_header (bfd *abfd, FILE *file)
3357 {
3358 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
3359 bfd_mach_o_header *h = &mdata->header;
3360
3361 fputs (_("Mach-O header:\n"), file);
3362 fprintf (file, _(" magic : %08lx\n"), h->magic);
3363 fprintf (file, _(" cputype : %08lx (%s)\n"), h->cputype,
3364 bfd_mach_o_get_name (bfd_mach_o_cpu_name, h->cputype));
3365 fprintf (file, _(" cpusubtype: %08lx\n"), h->cpusubtype);
3366 fprintf (file, _(" filetype : %08lx (%s)\n"),
3367 h->filetype,
3368 bfd_mach_o_get_name (bfd_mach_o_filetype_name, h->filetype));
3369 fprintf (file, _(" ncmds : %08lx (%lu)\n"), h->ncmds, h->ncmds);
3370 fprintf (file, _(" sizeofcmds: %08lx\n"), h->sizeofcmds);
3371 fprintf (file, _(" flags : %08lx ("), h->flags);
3372 bfd_mach_o_print_flags (bfd_mach_o_header_flags_name, h->flags, file);
3373 fputs (_(")\n"), file);
3374 fprintf (file, _(" reserved : %08x\n"), h->reserved);
3375 }
3376
3377 static void
3378 bfd_mach_o_print_section_map (bfd *abfd, FILE *file)
3379 {
3380 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
3381 unsigned int i, j;
3382 unsigned int sec_nbr = 0;
3383
3384 fputs (_("Segments and Sections:\n"), file);
3385 fputs (_(" #: Segment name Section name Address\n"), file);
3386
3387 for (i = 0; i < mdata->header.ncmds; i++)
3388 {
3389 bfd_mach_o_segment_command *seg;
3390
3391 if (mdata->commands[i].type != BFD_MACH_O_LC_SEGMENT
3392 && mdata->commands[i].type != BFD_MACH_O_LC_SEGMENT_64)
3393 continue;
3394
3395 seg = &mdata->commands[i].command.segment;
3396
3397 fprintf (file, "[Segment %-16s ", seg->segname);
3398 fprintf_vma (file, seg->vmaddr);
3399 fprintf (file, "-");
3400 fprintf_vma (file, seg->vmaddr + seg->vmsize - 1);
3401 fputc (' ', file);
3402 fputc (seg->initprot & BFD_MACH_O_PROT_READ ? 'r' : '-', file);
3403 fputc (seg->initprot & BFD_MACH_O_PROT_WRITE ? 'w' : '-', file);
3404 fputc (seg->initprot & BFD_MACH_O_PROT_EXECUTE ? 'x' : '-', file);
3405 fprintf (file, "]\n");
3406 for (j = 0; j < seg->nsects; j++)
3407 {
3408 bfd_mach_o_section *sec = &seg->sections[j];
3409 fprintf (file, "%02u: %-16s %-16s ", ++sec_nbr,
3410 sec->segname, sec->sectname);
3411 fprintf_vma (file, sec->addr);
3412 fprintf (file, " ");
3413 fprintf_vma (file, sec->size);
3414 fprintf (file, " %08lx\n", sec->flags);
3415 }
3416 }
3417 }
3418
3419 static void
3420 bfd_mach_o_print_section (bfd *abfd ATTRIBUTE_UNUSED,
3421 bfd_mach_o_section *sec, FILE *file)
3422 {
3423 fprintf (file, " Section: %-16s %-16s (bfdname: %s)\n",
3424 sec->sectname, sec->segname, sec->bfdsection->name);
3425 fprintf (file, " addr: ");
3426 fprintf_vma (file, sec->addr);
3427 fprintf (file, " size: ");
3428 fprintf_vma (file, sec->size);
3429 fprintf (file, " offset: ");
3430 fprintf_vma (file, sec->offset);
3431 fprintf (file, "\n");
3432 fprintf (file, " align: %ld", sec->align);
3433 fprintf (file, " nreloc: %lu reloff: ", sec->nreloc);
3434 fprintf_vma (file, sec->reloff);
3435 fprintf (file, "\n");
3436 fprintf (file, " flags: %08lx (type: %s", sec->flags,
3437 bfd_mach_o_get_name (bfd_mach_o_section_type_name,
3438 sec->flags & BFD_MACH_O_SECTION_TYPE_MASK));
3439 fprintf (file, " attr: ");
3440 bfd_mach_o_print_flags (bfd_mach_o_section_attribute_name,
3441 sec->flags & BFD_MACH_O_SECTION_ATTRIBUTES_MASK,
3442 file);
3443 fprintf (file, ")\n");
3444 switch (sec->flags & BFD_MACH_O_SECTION_TYPE_MASK)
3445 {
3446 case BFD_MACH_O_S_NON_LAZY_SYMBOL_POINTERS:
3447 case BFD_MACH_O_S_LAZY_SYMBOL_POINTERS:
3448 case BFD_MACH_O_S_SYMBOL_STUBS:
3449 fprintf (file, " first indirect sym: %lu", sec->reserved1);
3450 fprintf (file, " (%u entries)",
3451 bfd_mach_o_section_get_nbr_indirect (abfd, sec));
3452 break;
3453 default:
3454 fprintf (file, " reserved1: 0x%lx", sec->reserved1);
3455 break;
3456 }
3457 switch (sec->flags & BFD_MACH_O_SECTION_TYPE_MASK)
3458 {
3459 case BFD_MACH_O_S_SYMBOL_STUBS:
3460 fprintf (file, " stub size: %lu", sec->reserved2);
3461 break;
3462 default:
3463 fprintf (file, " reserved2: 0x%lx", sec->reserved2);
3464 break;
3465 }
3466 fprintf (file, " reserved3: 0x%lx\n", sec->reserved3);
3467 }
3468
3469 static void
3470 bfd_mach_o_print_segment (bfd *abfd ATTRIBUTE_UNUSED,
3471 bfd_mach_o_load_command *cmd, FILE *file)
3472 {
3473 bfd_mach_o_segment_command *seg = &cmd->command.segment;
3474 unsigned int i;
3475
3476 fprintf (file, " name: %s\n", *seg->segname ? seg->segname : "*none*");
3477 fprintf (file, " vmaddr: ");
3478 fprintf_vma (file, seg->vmaddr);
3479 fprintf (file, " vmsize: ");
3480 fprintf_vma (file, seg->vmsize);
3481 fprintf (file, "\n");
3482 fprintf (file, " fileoff: ");
3483 fprintf_vma (file, seg->fileoff);
3484 fprintf (file, " filesize: ");
3485 fprintf_vma (file, (bfd_vma)seg->filesize);
3486 fprintf (file, " endoff: ");
3487 fprintf_vma (file, (bfd_vma)(seg->fileoff + seg->filesize));
3488 fprintf (file, "\n");
3489 fprintf (file, " nsects: %lu ", seg->nsects);
3490 fprintf (file, " flags: %lx\n", seg->flags);
3491 for (i = 0; i < seg->nsects; i++)
3492 bfd_mach_o_print_section (abfd, &seg->sections[i], file);
3493 }
3494
3495 static void
3496 bfd_mach_o_print_dysymtab (bfd *abfd ATTRIBUTE_UNUSED,
3497 bfd_mach_o_load_command *cmd, FILE *file)
3498 {
3499 bfd_mach_o_dysymtab_command *dysymtab = &cmd->command.dysymtab;
3500 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
3501 unsigned int i;
3502
3503 fprintf (file, " local symbols: idx: %10lu num: %-8lu",
3504 dysymtab->ilocalsym, dysymtab->nlocalsym);
3505 fprintf (file, " (nxtidx: %lu)\n",
3506 dysymtab->ilocalsym + dysymtab->nlocalsym);
3507 fprintf (file, " external symbols: idx: %10lu num: %-8lu",
3508 dysymtab->iextdefsym, dysymtab->nextdefsym);
3509 fprintf (file, " (nxtidx: %lu)\n",
3510 dysymtab->iextdefsym + dysymtab->nextdefsym);
3511 fprintf (file, " undefined symbols: idx: %10lu num: %-8lu",
3512 dysymtab->iundefsym, dysymtab->nundefsym);
3513 fprintf (file, " (nxtidx: %lu)\n",
3514 dysymtab->iundefsym + dysymtab->nundefsym);
3515 fprintf (file, " table of content: off: 0x%08lx num: %-8lu",
3516 dysymtab->tocoff, dysymtab->ntoc);
3517 fprintf (file, " (endoff: 0x%08lx)\n",
3518 dysymtab->tocoff
3519 + dysymtab->ntoc * BFD_MACH_O_TABLE_OF_CONTENT_SIZE);
3520 fprintf (file, " module table: off: 0x%08lx num: %-8lu",
3521 dysymtab->modtaboff, dysymtab->nmodtab);
3522 fprintf (file, " (endoff: 0x%08lx)\n",
3523 dysymtab->modtaboff + dysymtab->nmodtab
3524 * (mach_o_wide_p (&mdata->header) ?
3525 BFD_MACH_O_DYLIB_MODULE_64_SIZE : BFD_MACH_O_DYLIB_MODULE_SIZE));
3526 fprintf (file, " external reference table: off: 0x%08lx num: %-8lu",
3527 dysymtab->extrefsymoff, dysymtab->nextrefsyms);
3528 fprintf (file, " (endoff: 0x%08lx)\n",
3529 dysymtab->extrefsymoff
3530 + dysymtab->nextrefsyms * BFD_MACH_O_REFERENCE_SIZE);
3531 fprintf (file, " indirect symbol table: off: 0x%08lx num: %-8lu",
3532 dysymtab->indirectsymoff, dysymtab->nindirectsyms);
3533 fprintf (file, " (endoff: 0x%08lx)\n",
3534 dysymtab->indirectsymoff
3535 + dysymtab->nindirectsyms * BFD_MACH_O_INDIRECT_SYMBOL_SIZE);
3536 fprintf (file, " external relocation table: off: 0x%08lx num: %-8lu",
3537 dysymtab->extreloff, dysymtab->nextrel);
3538 fprintf (file, " (endoff: 0x%08lx)\n",
3539 dysymtab->extreloff + dysymtab->nextrel * BFD_MACH_O_RELENT_SIZE);
3540 fprintf (file, " local relocation table: off: 0x%08lx num: %-8lu",
3541 dysymtab->locreloff, dysymtab->nlocrel);
3542 fprintf (file, " (endoff: 0x%08lx)\n",
3543 dysymtab->locreloff + dysymtab->nlocrel * BFD_MACH_O_RELENT_SIZE);
3544
3545 if (dysymtab->ntoc > 0
3546 || dysymtab->nindirectsyms > 0
3547 || dysymtab->nextrefsyms > 0)
3548 {
3549 /* Try to read the symbols to display the toc or indirect symbols. */
3550 bfd_mach_o_read_symtab_symbols (abfd);
3551 }
3552 else if (dysymtab->nmodtab > 0)
3553 {
3554 /* Try to read the strtab to display modules name. */
3555 bfd_mach_o_read_symtab_strtab (abfd);
3556 }
3557
3558 for (i = 0; i < dysymtab->nmodtab; i++)
3559 {
3560 bfd_mach_o_dylib_module *module = &dysymtab->dylib_module[i];
3561 fprintf (file, " module %u:\n", i);
3562 fprintf (file, " name: %lu", module->module_name_idx);
3563 if (mdata->symtab && mdata->symtab->strtab)
3564 fprintf (file, ": %s",
3565 mdata->symtab->strtab + module->module_name_idx);
3566 fprintf (file, "\n");
3567 fprintf (file, " extdefsym: idx: %8lu num: %lu\n",
3568 module->iextdefsym, module->nextdefsym);
3569 fprintf (file, " refsym: idx: %8lu num: %lu\n",
3570 module->irefsym, module->nrefsym);
3571 fprintf (file, " localsym: idx: %8lu num: %lu\n",
3572 module->ilocalsym, module->nlocalsym);
3573 fprintf (file, " extrel: idx: %8lu num: %lu\n",
3574 module->iextrel, module->nextrel);
3575 fprintf (file, " init: idx: %8u num: %u\n",
3576 module->iinit, module->ninit);
3577 fprintf (file, " term: idx: %8u num: %u\n",
3578 module->iterm, module->nterm);
3579 fprintf (file, " objc_module_info: addr: ");
3580 fprintf_vma (file, module->objc_module_info_addr);
3581 fprintf (file, " size: %lu\n", module->objc_module_info_size);
3582 }
3583
3584 if (dysymtab->ntoc > 0)
3585 {
3586 bfd_mach_o_symtab_command *symtab = mdata->symtab;
3587
3588 fprintf (file, " table of content: (symbol/module)\n");
3589 for (i = 0; i < dysymtab->ntoc; i++)
3590 {
3591 bfd_mach_o_dylib_table_of_content *toc = &dysymtab->dylib_toc[i];
3592
3593 fprintf (file, " %4u: ", i);
3594 if (symtab && symtab->symbols && toc->symbol_index < symtab->nsyms)
3595 {
3596 const char *name = symtab->symbols[toc->symbol_index].symbol.name;
3597 fprintf (file, "%s (%lu)", name ? name : "*invalid*",
3598 toc->symbol_index);
3599 }
3600 else
3601 fprintf (file, "%lu", toc->symbol_index);
3602
3603 fprintf (file, " / ");
3604 if (symtab && symtab->strtab
3605 && toc->module_index < dysymtab->nmodtab)
3606 {
3607 bfd_mach_o_dylib_module *mod;
3608 mod = &dysymtab->dylib_module[toc->module_index];
3609 fprintf (file, "%s (%lu)",
3610 symtab->strtab + mod->module_name_idx,
3611 toc->module_index);
3612 }
3613 else
3614 fprintf (file, "%lu", toc->module_index);
3615
3616 fprintf (file, "\n");
3617 }
3618 }
3619
3620 if (dysymtab->nindirectsyms != 0)
3621 {
3622 fprintf (file, " indirect symbols:\n");
3623
3624 for (i = 0; i < mdata->nsects; i++)
3625 {
3626 bfd_mach_o_section *sec = mdata->sections[i];
3627 unsigned int j, first, last;
3628 bfd_mach_o_symtab_command *symtab = mdata->symtab;
3629 bfd_vma addr;
3630 bfd_vma entry_size;
3631
3632 switch (sec->flags & BFD_MACH_O_SECTION_TYPE_MASK)
3633 {
3634 case BFD_MACH_O_S_NON_LAZY_SYMBOL_POINTERS:
3635 case BFD_MACH_O_S_LAZY_SYMBOL_POINTERS:
3636 case BFD_MACH_O_S_SYMBOL_STUBS:
3637 first = sec->reserved1;
3638 last = first + bfd_mach_o_section_get_nbr_indirect (abfd, sec);
3639 addr = sec->addr;
3640 entry_size = bfd_mach_o_section_get_entry_size (abfd, sec);
3641 fprintf (file, " for section %s.%s:\n",
3642 sec->segname, sec->sectname);
3643 for (j = first; j < last; j++)
3644 {
3645 unsigned int isym = dysymtab->indirect_syms[j];
3646
3647 fprintf (file, " ");
3648 fprintf_vma (file, addr);
3649 fprintf (file, " %5u: 0x%08x", j, isym);
3650 if (isym & BFD_MACH_O_INDIRECT_SYMBOL_LOCAL)
3651 fprintf (file, " LOCAL");
3652 if (isym & BFD_MACH_O_INDIRECT_SYMBOL_ABS)
3653 fprintf (file, " ABSOLUTE");
3654 if (symtab && symtab->symbols
3655 && isym < symtab->nsyms
3656 && symtab->symbols[isym].symbol.name)
3657 fprintf (file, " %s", symtab->symbols[isym].symbol.name);
3658 fprintf (file, "\n");
3659 addr += entry_size;
3660 }
3661 break;
3662 default:
3663 break;
3664 }
3665 }
3666 }
3667 if (dysymtab->nextrefsyms > 0)
3668 {
3669 bfd_mach_o_symtab_command *symtab = mdata->symtab;
3670
3671 fprintf (file, " external reference table: (symbol flags)\n");
3672 for (i = 0; i < dysymtab->nextrefsyms; i++)
3673 {
3674 bfd_mach_o_dylib_reference *ref = &dysymtab->ext_refs[i];
3675
3676 fprintf (file, " %4u: %5lu 0x%02lx", i, ref->isym, ref->flags);
3677 if (symtab && symtab->symbols
3678 && ref->isym < symtab->nsyms
3679 && symtab->symbols[ref->isym].symbol.name)
3680 fprintf (file, " %s", symtab->symbols[ref->isym].symbol.name);
3681 fprintf (file, "\n");
3682 }
3683 }
3684
3685 }
3686
3687 static void
3688 bfd_mach_o_print_dyld_info (bfd *abfd ATTRIBUTE_UNUSED,
3689 bfd_mach_o_load_command *cmd, FILE *file)
3690 {
3691 bfd_mach_o_dyld_info_command *info = &cmd->command.dyld_info;
3692
3693 fprintf (file, " rebase: off: 0x%08x size: %-8u\n",
3694 info->rebase_off, info->rebase_size);
3695 fprintf (file, " bind: off: 0x%08x size: %-8u\n",
3696 info->bind_off, info->bind_size);
3697 fprintf (file, " weak bind: off: 0x%08x size: %-8u\n",
3698 info->weak_bind_off, info->weak_bind_size);
3699 fprintf (file, " lazy bind: off: 0x%08x size: %-8u\n",
3700 info->lazy_bind_off, info->lazy_bind_size);
3701 fprintf (file, " export: off: 0x%08x size: %-8u\n",
3702 info->export_off, info->export_size);
3703 }
3704
3705 bfd_boolean
3706 bfd_mach_o_bfd_print_private_bfd_data (bfd *abfd, void * ptr)
3707 {
3708 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
3709 FILE *file = (FILE *) ptr;
3710 unsigned int i;
3711
3712 bfd_mach_o_print_private_header (abfd, file);
3713 fputc ('\n', file);
3714
3715 for (i = 0; i < mdata->header.ncmds; i++)
3716 {
3717 bfd_mach_o_load_command *cmd = &mdata->commands[i];
3718
3719 fprintf (file, "Load command %s:",
3720 bfd_mach_o_get_name (bfd_mach_o_load_command_name, cmd->type));
3721 switch (cmd->type)
3722 {
3723 case BFD_MACH_O_LC_SEGMENT:
3724 case BFD_MACH_O_LC_SEGMENT_64:
3725 bfd_mach_o_print_segment (abfd, cmd, file);
3726 break;
3727 case BFD_MACH_O_LC_UUID:
3728 {
3729 bfd_mach_o_uuid_command *uuid = &cmd->command.uuid;
3730 unsigned int j;
3731
3732 for (j = 0; j < sizeof (uuid->uuid); j ++)
3733 fprintf (file, " %02x", uuid->uuid[j]);
3734 fputc ('\n', file);
3735 }
3736 break;
3737 case BFD_MACH_O_LC_LOAD_DYLIB:
3738 case BFD_MACH_O_LC_LOAD_WEAK_DYLIB:
3739 case BFD_MACH_O_LC_REEXPORT_DYLIB:
3740 case BFD_MACH_O_LC_ID_DYLIB:
3741 {
3742 bfd_mach_o_dylib_command *dylib = &cmd->command.dylib;
3743 fprintf (file, " %s\n", dylib->name_str);
3744 fprintf (file, " time stamp: 0x%08lx\n",
3745 dylib->timestamp);
3746 fprintf (file, " current version: 0x%08lx\n",
3747 dylib->current_version);
3748 fprintf (file, " comptibility version: 0x%08lx\n",
3749 dylib->compatibility_version);
3750 break;
3751 }
3752 case BFD_MACH_O_LC_LOAD_DYLINKER:
3753 case BFD_MACH_O_LC_ID_DYLINKER:
3754 fprintf (file, " %s\n", cmd->command.dylinker.name_str);
3755 break;
3756 case BFD_MACH_O_LC_SYMTAB:
3757 {
3758 bfd_mach_o_symtab_command *symtab = &cmd->command.symtab;
3759 fprintf (file,
3760 "\n"
3761 " symoff: 0x%08x nsyms: %8u (endoff: 0x%08x)\n",
3762 symtab->symoff, symtab->nsyms,
3763 symtab->symoff + symtab->nsyms
3764 * (mach_o_wide_p (&mdata->header)
3765 ? BFD_MACH_O_NLIST_64_SIZE : BFD_MACH_O_NLIST_SIZE));
3766 fprintf (file,
3767 " stroff: 0x%08x strsize: %8u (endoff: 0x%08x)\n",
3768 symtab->stroff, symtab->strsize,
3769 symtab->stroff + symtab->strsize);
3770 break;
3771 }
3772 case BFD_MACH_O_LC_DYSYMTAB:
3773 fprintf (file, "\n");
3774 bfd_mach_o_print_dysymtab (abfd, cmd, file);
3775 break;
3776 case BFD_MACH_O_LC_CODE_SIGNATURE:
3777 case BFD_MACH_O_LC_SEGMENT_SPLIT_INFO:
3778 {
3779 bfd_mach_o_linkedit_command *linkedit = &cmd->command.linkedit;
3780 fprintf
3781 (file, "\n"
3782 " dataoff: 0x%08lx datasize: 0x%08lx (endoff: 0x%08lx)\n",
3783 linkedit->dataoff, linkedit->datasize,
3784 linkedit->dataoff + linkedit->datasize);
3785 break;
3786 }
3787 case BFD_MACH_O_LC_SUB_FRAMEWORK:
3788 case BFD_MACH_O_LC_SUB_UMBRELLA:
3789 case BFD_MACH_O_LC_SUB_LIBRARY:
3790 case BFD_MACH_O_LC_SUB_CLIENT:
3791 case BFD_MACH_O_LC_RPATH:
3792 {
3793 bfd_mach_o_str_command *str = &cmd->command.str;
3794 fprintf (file, " %s\n", str->str);
3795 break;
3796 }
3797 case BFD_MACH_O_LC_THREAD:
3798 case BFD_MACH_O_LC_UNIXTHREAD:
3799 {
3800 bfd_mach_o_thread_command *thread = &cmd->command.thread;
3801 unsigned int j;
3802 bfd_mach_o_backend_data *bed = bfd_mach_o_get_backend_data (abfd);
3803
3804 fprintf (file, " nflavours: %lu\n", thread->nflavours);
3805 for (j = 0; j < thread->nflavours; j++)
3806 {
3807 bfd_mach_o_thread_flavour *flavour = &thread->flavours[j];
3808
3809 fprintf (file, " %2u: flavour: 0x%08lx offset: 0x%08lx"
3810 " size: 0x%08lx\n",
3811 j, flavour->flavour, flavour->offset,
3812 flavour->size);
3813 if (bed->_bfd_mach_o_print_thread)
3814 {
3815 char *buf = bfd_malloc (flavour->size);
3816
3817 if (buf
3818 && bfd_seek (abfd, flavour->offset, SEEK_SET) == 0
3819 && (bfd_bread (buf, flavour->size, abfd)
3820 == flavour->size))
3821 (*bed->_bfd_mach_o_print_thread)(abfd, flavour,
3822 file, buf);
3823 free (buf);
3824 }
3825 }
3826 break;
3827 }
3828 case BFD_MACH_O_LC_DYLD_INFO:
3829 fprintf (file, "\n");
3830 bfd_mach_o_print_dyld_info (abfd, cmd, file);
3831 break;
3832 default:
3833 fprintf (file, "\n");
3834 break;
3835 }
3836 fputc ('\n', file);
3837 }
3838
3839 bfd_mach_o_print_section_map (abfd, file);
3840
3841 return TRUE;
3842 }
3843
3844 int
3845 bfd_mach_o_core_fetch_environment (bfd *abfd,
3846 unsigned char **rbuf,
3847 unsigned int *rlen)
3848 {
3849 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
3850 unsigned long stackaddr = bfd_mach_o_stack_addr (mdata->header.cputype);
3851 unsigned int i = 0;
3852
3853 for (i = 0; i < mdata->header.ncmds; i++)
3854 {
3855 bfd_mach_o_load_command *cur = &mdata->commands[i];
3856 bfd_mach_o_segment_command *seg = NULL;
3857
3858 if (cur->type != BFD_MACH_O_LC_SEGMENT)
3859 continue;
3860
3861 seg = &cur->command.segment;
3862
3863 if ((seg->vmaddr + seg->vmsize) == stackaddr)
3864 {
3865 unsigned long start = seg->fileoff;
3866 unsigned long end = seg->fileoff + seg->filesize;
3867 unsigned char *buf = bfd_malloc (1024);
3868 unsigned long size = 1024;
3869
3870 for (;;)
3871 {
3872 bfd_size_type nread = 0;
3873 unsigned long offset;
3874 int found_nonnull = 0;
3875
3876 if (size > (end - start))
3877 size = (end - start);
3878
3879 buf = bfd_realloc_or_free (buf, size);
3880 if (buf == NULL)
3881 return -1;
3882
3883 if (bfd_seek (abfd, end - size, SEEK_SET) != 0)
3884 {
3885 free (buf);
3886 return -1;
3887 }
3888
3889 nread = bfd_bread (buf, size, abfd);
3890
3891 if (nread != size)
3892 {
3893 free (buf);
3894 return -1;
3895 }
3896
3897 for (offset = 4; offset <= size; offset += 4)
3898 {
3899 unsigned long val;
3900
3901 val = *((unsigned long *) (buf + size - offset));
3902 if (! found_nonnull)
3903 {
3904 if (val != 0)
3905 found_nonnull = 1;
3906 }
3907 else if (val == 0x0)
3908 {
3909 unsigned long bottom;
3910 unsigned long top;
3911
3912 bottom = seg->fileoff + seg->filesize - offset;
3913 top = seg->fileoff + seg->filesize - 4;
3914 *rbuf = bfd_malloc (top - bottom);
3915 *rlen = top - bottom;
3916
3917 memcpy (*rbuf, buf + size - *rlen, *rlen);
3918 free (buf);
3919 return 0;
3920 }
3921 }
3922
3923 if (size == (end - start))
3924 break;
3925
3926 size *= 2;
3927 }
3928
3929 free (buf);
3930 }
3931 }
3932
3933 return -1;
3934 }
3935
3936 char *
3937 bfd_mach_o_core_file_failing_command (bfd *abfd)
3938 {
3939 unsigned char *buf = NULL;
3940 unsigned int len = 0;
3941 int ret = -1;
3942
3943 ret = bfd_mach_o_core_fetch_environment (abfd, &buf, &len);
3944 if (ret < 0)
3945 return NULL;
3946
3947 return (char *) buf;
3948 }
3949
3950 int
3951 bfd_mach_o_core_file_failing_signal (bfd *abfd ATTRIBUTE_UNUSED)
3952 {
3953 return 0;
3954 }
3955
3956 #define bfd_mach_o_bfd_reloc_type_lookup _bfd_norelocs_bfd_reloc_type_lookup
3957 #define bfd_mach_o_bfd_reloc_name_lookup _bfd_norelocs_bfd_reloc_name_lookup
3958
3959 #define bfd_mach_o_swap_reloc_in NULL
3960 #define bfd_mach_o_swap_reloc_out NULL
3961 #define bfd_mach_o_print_thread NULL
3962
3963 #define TARGET_NAME mach_o_be_vec
3964 #define TARGET_STRING "mach-o-be"
3965 #define TARGET_BIG_ENDIAN 1
3966 #define TARGET_ARCHIVE 0
3967 #include "mach-o-target.c"
3968
3969 #undef TARGET_NAME
3970 #undef TARGET_STRING
3971 #undef TARGET_BIG_ENDIAN
3972 #undef TARGET_ARCHIVE
3973
3974 #define TARGET_NAME mach_o_le_vec
3975 #define TARGET_STRING "mach-o-le"
3976 #define TARGET_BIG_ENDIAN 0
3977 #define TARGET_ARCHIVE 0
3978
3979 #include "mach-o-target.c"
3980
3981 #undef TARGET_NAME
3982 #undef TARGET_STRING
3983 #undef TARGET_BIG_ENDIAN
3984 #undef TARGET_ARCHIVE
3985
3986 #define TARGET_NAME mach_o_fat_vec
3987 #define TARGET_STRING "mach-o-fat"
3988 #define TARGET_BIG_ENDIAN 1
3989 #define TARGET_ARCHIVE 1
3990
3991 #include "mach-o-target.c"
3992
3993 #undef TARGET_NAME
3994 #undef TARGET_STRING
3995 #undef TARGET_BIG_ENDIAN
3996 #undef TARGET_ARCHIVE
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