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order relocs after segments for mach-o
[binutils-gdb.git] / bfd / mach-o.c
1 /* Mach-O support for BFD.
2 Copyright 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008,
3 2009, 2010, 2011, 2012
4 Free Software Foundation, Inc.
5
6 This file is part of BFD, the Binary File Descriptor library.
7
8 This program is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 3 of the License, or
11 (at your option) any later version.
12
13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
17
18 You should have received a copy of the GNU General Public License
19 along with this program; if not, write to the Free Software
20 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
21 MA 02110-1301, USA. */
22
23 #include "sysdep.h"
24 #include "mach-o.h"
25 #include "bfd.h"
26 #include "libbfd.h"
27 #include "libiberty.h"
28 #include "aout/stab_gnu.h"
29 #include "mach-o/reloc.h"
30 #include "mach-o/external.h"
31 #include <ctype.h>
32 #include <stdlib.h>
33 #include <string.h>
34
35 #define bfd_mach_o_object_p bfd_mach_o_gen_object_p
36 #define bfd_mach_o_core_p bfd_mach_o_gen_core_p
37 #define bfd_mach_o_mkobject bfd_mach_o_gen_mkobject
38
39 #define FILE_ALIGN(off, algn) \
40 (((off) + ((file_ptr) 1 << (algn)) - 1) & ((file_ptr) -1 << (algn)))
41
42 unsigned int
43 bfd_mach_o_version (bfd *abfd)
44 {
45 bfd_mach_o_data_struct *mdata = NULL;
46
47 BFD_ASSERT (bfd_mach_o_valid (abfd));
48 mdata = bfd_mach_o_get_data (abfd);
49
50 return mdata->header.version;
51 }
52
53 bfd_boolean
54 bfd_mach_o_valid (bfd *abfd)
55 {
56 if (abfd == NULL || abfd->xvec == NULL)
57 return FALSE;
58
59 if (abfd->xvec->flavour != bfd_target_mach_o_flavour)
60 return FALSE;
61
62 if (bfd_mach_o_get_data (abfd) == NULL)
63 return FALSE;
64 return TRUE;
65 }
66
67 static INLINE bfd_boolean
68 mach_o_wide_p (bfd_mach_o_header *header)
69 {
70 switch (header->version)
71 {
72 case 1:
73 return FALSE;
74 case 2:
75 return TRUE;
76 default:
77 BFD_FAIL ();
78 return FALSE;
79 }
80 }
81
82 static INLINE bfd_boolean
83 bfd_mach_o_wide_p (bfd *abfd)
84 {
85 return mach_o_wide_p (&bfd_mach_o_get_data (abfd)->header);
86 }
87
88 /* Tables to translate well known Mach-O segment/section names to bfd
89 names. Use of canonical names (such as .text or .debug_frame) is required
90 by gdb. */
91
92 /* __TEXT Segment. */
93 static const mach_o_section_name_xlat text_section_names_xlat[] =
94 {
95 { ".text", "__text",
96 SEC_CODE | SEC_LOAD, BFD_MACH_O_S_REGULAR,
97 BFD_MACH_O_S_ATTR_PURE_INSTRUCTIONS, 0},
98 { ".const", "__const",
99 SEC_READONLY | SEC_DATA | SEC_LOAD, BFD_MACH_O_S_REGULAR,
100 BFD_MACH_O_S_ATTR_NONE, 0},
101 { ".static_const", "__static_const",
102 SEC_READONLY | SEC_DATA | SEC_LOAD, BFD_MACH_O_S_REGULAR,
103 BFD_MACH_O_S_ATTR_NONE, 0},
104 { ".cstring", "__cstring",
105 SEC_READONLY | SEC_DATA | SEC_LOAD | SEC_MERGE | SEC_STRINGS,
106 BFD_MACH_O_S_CSTRING_LITERALS,
107 BFD_MACH_O_S_ATTR_NONE, 0},
108 { ".literal4", "__literal4",
109 SEC_READONLY | SEC_DATA | SEC_LOAD, BFD_MACH_O_S_4BYTE_LITERALS,
110 BFD_MACH_O_S_ATTR_NONE, 2},
111 { ".literal8", "__literal8",
112 SEC_READONLY | SEC_DATA | SEC_LOAD, BFD_MACH_O_S_8BYTE_LITERALS,
113 BFD_MACH_O_S_ATTR_NONE, 3},
114 { ".literal16", "__literal16",
115 SEC_READONLY | SEC_DATA | SEC_LOAD, BFD_MACH_O_S_16BYTE_LITERALS,
116 BFD_MACH_O_S_ATTR_NONE, 4},
117 { ".constructor", "__constructor",
118 SEC_CODE | SEC_LOAD, BFD_MACH_O_S_REGULAR,
119 BFD_MACH_O_S_ATTR_NONE, 0},
120 { ".destructor", "__destructor",
121 SEC_CODE | SEC_LOAD, BFD_MACH_O_S_REGULAR,
122 BFD_MACH_O_S_ATTR_NONE, 0},
123 { ".eh_frame", "__eh_frame",
124 SEC_READONLY | SEC_LOAD, BFD_MACH_O_S_COALESCED,
125 BFD_MACH_O_S_ATTR_LIVE_SUPPORT
126 | BFD_MACH_O_S_ATTR_STRIP_STATIC_SYMS
127 | BFD_MACH_O_S_ATTR_NO_TOC, 3},
128 { NULL, NULL, 0, 0, 0, 0}
129 };
130
131 /* __DATA Segment. */
132 static const mach_o_section_name_xlat data_section_names_xlat[] =
133 {
134 { ".data", "__data",
135 SEC_DATA | SEC_LOAD, BFD_MACH_O_S_REGULAR,
136 BFD_MACH_O_S_ATTR_NONE, 0},
137 { ".bss", "__bss",
138 SEC_NO_FLAGS, BFD_MACH_O_S_ZEROFILL,
139 BFD_MACH_O_S_ATTR_NONE, 0},
140 { ".const_data", "__const",
141 SEC_DATA | SEC_LOAD, BFD_MACH_O_S_REGULAR,
142 BFD_MACH_O_S_ATTR_NONE, 0},
143 { ".static_data", "__static_data",
144 SEC_DATA | SEC_LOAD, BFD_MACH_O_S_REGULAR,
145 BFD_MACH_O_S_ATTR_NONE, 0},
146 { ".mod_init_func", "__mod_init_func",
147 SEC_DATA | SEC_LOAD, BFD_MACH_O_S_MOD_INIT_FUNC_POINTERS,
148 BFD_MACH_O_S_ATTR_NONE, 2},
149 { ".mod_term_func", "__mod_term_func",
150 SEC_DATA | SEC_LOAD, BFD_MACH_O_S_MOD_FINI_FUNC_POINTERS,
151 BFD_MACH_O_S_ATTR_NONE, 2},
152 { ".dyld", "__dyld",
153 SEC_DATA | SEC_LOAD, BFD_MACH_O_S_REGULAR,
154 BFD_MACH_O_S_ATTR_NONE, 0},
155 { ".cfstring", "__cfstring",
156 SEC_DATA | SEC_LOAD, BFD_MACH_O_S_REGULAR,
157 BFD_MACH_O_S_ATTR_NONE, 2},
158 { NULL, NULL, 0, 0, 0, 0}
159 };
160
161 /* __DWARF Segment. */
162 static const mach_o_section_name_xlat dwarf_section_names_xlat[] =
163 {
164 { ".debug_frame", "__debug_frame",
165 SEC_DEBUGGING, BFD_MACH_O_S_REGULAR,
166 BFD_MACH_O_S_ATTR_DEBUG, 0},
167 { ".debug_info", "__debug_info",
168 SEC_DEBUGGING, BFD_MACH_O_S_REGULAR,
169 BFD_MACH_O_S_ATTR_DEBUG, 0},
170 { ".debug_abbrev", "__debug_abbrev",
171 SEC_DEBUGGING, BFD_MACH_O_S_REGULAR,
172 BFD_MACH_O_S_ATTR_DEBUG, 0},
173 { ".debug_aranges", "__debug_aranges",
174 SEC_DEBUGGING, BFD_MACH_O_S_REGULAR,
175 BFD_MACH_O_S_ATTR_DEBUG, 0},
176 { ".debug_macinfo", "__debug_macinfo",
177 SEC_DEBUGGING, BFD_MACH_O_S_REGULAR,
178 BFD_MACH_O_S_ATTR_DEBUG, 0},
179 { ".debug_line", "__debug_line",
180 SEC_DEBUGGING, BFD_MACH_O_S_REGULAR,
181 BFD_MACH_O_S_ATTR_DEBUG, 0},
182 { ".debug_loc", "__debug_loc",
183 SEC_DEBUGGING, BFD_MACH_O_S_REGULAR,
184 BFD_MACH_O_S_ATTR_DEBUG, 0},
185 { ".debug_pubnames", "__debug_pubnames",
186 SEC_DEBUGGING, BFD_MACH_O_S_REGULAR,
187 BFD_MACH_O_S_ATTR_DEBUG, 0},
188 { ".debug_pubtypes", "__debug_pubtypes",
189 SEC_DEBUGGING, BFD_MACH_O_S_REGULAR,
190 BFD_MACH_O_S_ATTR_DEBUG, 0},
191 { ".debug_str", "__debug_str",
192 SEC_DEBUGGING, BFD_MACH_O_S_REGULAR,
193 BFD_MACH_O_S_ATTR_DEBUG, 0},
194 { ".debug_ranges", "__debug_ranges",
195 SEC_DEBUGGING, BFD_MACH_O_S_REGULAR,
196 BFD_MACH_O_S_ATTR_DEBUG, 0},
197 { ".debug_macro", "__debug_macro",
198 SEC_DEBUGGING, BFD_MACH_O_S_REGULAR,
199 BFD_MACH_O_S_ATTR_DEBUG, 0},
200 { NULL, NULL, 0, 0, 0, 0}
201 };
202
203 /* __OBJC Segment. */
204 static const mach_o_section_name_xlat objc_section_names_xlat[] =
205 {
206 { ".objc_class", "__class",
207 SEC_DATA | SEC_LOAD, BFD_MACH_O_S_REGULAR,
208 BFD_MACH_O_S_ATTR_NO_DEAD_STRIP, 0},
209 { ".objc_meta_class", "__meta_class",
210 SEC_DATA | SEC_LOAD, BFD_MACH_O_S_REGULAR,
211 BFD_MACH_O_S_ATTR_NO_DEAD_STRIP, 0},
212 { ".objc_cat_cls_meth", "__cat_cls_meth",
213 SEC_DATA | SEC_LOAD, BFD_MACH_O_S_REGULAR,
214 BFD_MACH_O_S_ATTR_NO_DEAD_STRIP, 0},
215 { ".objc_cat_inst_meth", "__cat_inst_meth",
216 SEC_DATA | SEC_LOAD, BFD_MACH_O_S_REGULAR,
217 BFD_MACH_O_S_ATTR_NO_DEAD_STRIP, 0},
218 { ".objc_protocol", "__protocol",
219 SEC_DATA | SEC_LOAD, BFD_MACH_O_S_REGULAR,
220 BFD_MACH_O_S_ATTR_NO_DEAD_STRIP, 0},
221 { ".objc_string_object", "__string_object",
222 SEC_DATA | SEC_LOAD, BFD_MACH_O_S_REGULAR,
223 BFD_MACH_O_S_ATTR_NO_DEAD_STRIP, 0},
224 { ".objc_cls_meth", "__cls_meth",
225 SEC_DATA | SEC_LOAD, BFD_MACH_O_S_REGULAR,
226 BFD_MACH_O_S_ATTR_NO_DEAD_STRIP, 0},
227 { ".objc_inst_meth", "__inst_meth",
228 SEC_DATA | SEC_LOAD, BFD_MACH_O_S_REGULAR,
229 BFD_MACH_O_S_ATTR_NO_DEAD_STRIP, 0},
230 { ".objc_cls_refs", "__cls_refs",
231 SEC_DATA | SEC_LOAD, BFD_MACH_O_S_LITERAL_POINTERS,
232 BFD_MACH_O_S_ATTR_NO_DEAD_STRIP, 0},
233 { ".objc_message_refs", "__message_refs",
234 SEC_DATA | SEC_LOAD, BFD_MACH_O_S_LITERAL_POINTERS,
235 BFD_MACH_O_S_ATTR_NO_DEAD_STRIP, 0},
236 { ".objc_symbols", "__symbols",
237 SEC_DATA | SEC_LOAD, BFD_MACH_O_S_REGULAR,
238 BFD_MACH_O_S_ATTR_NO_DEAD_STRIP, 0},
239 { ".objc_category", "__category",
240 SEC_DATA | SEC_LOAD, BFD_MACH_O_S_REGULAR,
241 BFD_MACH_O_S_ATTR_NO_DEAD_STRIP, 0},
242 { ".objc_class_vars", "__class_vars",
243 SEC_DATA | SEC_LOAD, BFD_MACH_O_S_REGULAR,
244 BFD_MACH_O_S_ATTR_NO_DEAD_STRIP, 0},
245 { ".objc_instance_vars", "__instance_vars",
246 SEC_DATA | SEC_LOAD, BFD_MACH_O_S_REGULAR,
247 BFD_MACH_O_S_ATTR_NO_DEAD_STRIP, 0},
248 { ".objc_module_info", "__module_info",
249 SEC_DATA | SEC_LOAD, BFD_MACH_O_S_REGULAR,
250 BFD_MACH_O_S_ATTR_NO_DEAD_STRIP, 0},
251 { ".objc_selector_strs", "__selector_strs",
252 SEC_DATA | SEC_LOAD, BFD_MACH_O_S_CSTRING_LITERALS,
253 BFD_MACH_O_S_ATTR_NO_DEAD_STRIP, 0},
254 { ".objc_image_info", "__image_info",
255 SEC_DATA | SEC_LOAD, BFD_MACH_O_S_REGULAR,
256 BFD_MACH_O_S_ATTR_NO_DEAD_STRIP, 0},
257 { ".objc_selector_fixup", "__sel_fixup",
258 SEC_DATA | SEC_LOAD, BFD_MACH_O_S_REGULAR,
259 BFD_MACH_O_S_ATTR_NO_DEAD_STRIP, 0},
260 /* Objc V1 */
261 { ".objc1_class_ext", "__class_ext",
262 SEC_DATA | SEC_LOAD, BFD_MACH_O_S_REGULAR,
263 BFD_MACH_O_S_ATTR_NO_DEAD_STRIP, 0},
264 { ".objc1_property_list", "__property",
265 SEC_DATA | SEC_LOAD, BFD_MACH_O_S_REGULAR,
266 BFD_MACH_O_S_ATTR_NO_DEAD_STRIP, 0},
267 { ".objc1_protocol_ext", "__protocol_ext",
268 SEC_DATA | SEC_LOAD, BFD_MACH_O_S_REGULAR,
269 BFD_MACH_O_S_ATTR_NO_DEAD_STRIP, 0},
270 { NULL, NULL, 0, 0, 0, 0}
271 };
272
273 static const mach_o_segment_name_xlat segsec_names_xlat[] =
274 {
275 { "__TEXT", text_section_names_xlat },
276 { "__DATA", data_section_names_xlat },
277 { "__DWARF", dwarf_section_names_xlat },
278 { "__OBJC", objc_section_names_xlat },
279 { NULL, NULL }
280 };
281
282 static const char dsym_subdir[] = ".dSYM/Contents/Resources/DWARF";
283
284 /* For both cases bfd-name => mach-o name and vice versa, the specific target
285 is checked before the generic. This allows a target (e.g. ppc for cstring)
286 to override the generic definition with a more specific one. */
287
288 /* Fetch the translation from a Mach-O section designation (segment, section)
289 as a bfd short name, if one exists. Otherwise return NULL.
290
291 Allow the segment and section names to be unterminated 16 byte arrays. */
292
293 const mach_o_section_name_xlat *
294 bfd_mach_o_section_data_for_mach_sect (bfd *abfd, const char *segname,
295 const char *sectname)
296 {
297 const struct mach_o_segment_name_xlat *seg;
298 const mach_o_section_name_xlat *sec;
299 bfd_mach_o_backend_data *bed = bfd_mach_o_get_backend_data (abfd);
300
301 /* First try any target-specific translations defined... */
302 if (bed->segsec_names_xlat)
303 for (seg = bed->segsec_names_xlat; seg->segname; seg++)
304 if (strncmp (seg->segname, segname, BFD_MACH_O_SEGNAME_SIZE) == 0)
305 for (sec = seg->sections; sec->mach_o_name; sec++)
306 if (strncmp (sec->mach_o_name, sectname,
307 BFD_MACH_O_SECTNAME_SIZE) == 0)
308 return sec;
309
310 /* ... and then the Mach-O generic ones. */
311 for (seg = segsec_names_xlat; seg->segname; seg++)
312 if (strncmp (seg->segname, segname, BFD_MACH_O_SEGNAME_SIZE) == 0)
313 for (sec = seg->sections; sec->mach_o_name; sec++)
314 if (strncmp (sec->mach_o_name, sectname,
315 BFD_MACH_O_SECTNAME_SIZE) == 0)
316 return sec;
317
318 return NULL;
319 }
320
321 /* If the bfd_name for this section is a 'canonical' form for which we
322 know the Mach-O data, return the segment name and the data for the
323 Mach-O equivalent. Otherwise return NULL. */
324
325 const mach_o_section_name_xlat *
326 bfd_mach_o_section_data_for_bfd_name (bfd *abfd, const char *bfd_name,
327 const char **segname)
328 {
329 const struct mach_o_segment_name_xlat *seg;
330 const mach_o_section_name_xlat *sec;
331 bfd_mach_o_backend_data *bed = bfd_mach_o_get_backend_data (abfd);
332 *segname = NULL;
333
334 if (bfd_name[0] != '.')
335 return NULL;
336
337 /* First try any target-specific translations defined... */
338 if (bed->segsec_names_xlat)
339 for (seg = bed->segsec_names_xlat; seg->segname; seg++)
340 for (sec = seg->sections; sec->bfd_name; sec++)
341 if (strcmp (bfd_name, sec->bfd_name) == 0)
342 {
343 *segname = seg->segname;
344 return sec;
345 }
346
347 /* ... and then the Mach-O generic ones. */
348 for (seg = segsec_names_xlat; seg->segname; seg++)
349 for (sec = seg->sections; sec->bfd_name; sec++)
350 if (strcmp (bfd_name, sec->bfd_name) == 0)
351 {
352 *segname = seg->segname;
353 return sec;
354 }
355
356 return NULL;
357 }
358
359 /* Convert Mach-O section name to BFD.
360
361 Try to use standard/canonical names, for which we have tables including
362 default flag settings - which are returned. Otherwise forge a new name
363 in the form "<segmentname>.<sectionname>" this will be prefixed with
364 LC_SEGMENT. if the segment name does not begin with an underscore.
365
366 SEGNAME and SECTNAME are 16 byte arrays (they do not need to be NUL-
367 terminated if the name length is exactly 16 bytes - but must be if the name
368 length is less than 16 characters). */
369
370 void
371 bfd_mach_o_convert_section_name_to_bfd (bfd *abfd, const char *segname,
372 const char *secname, const char **name,
373 flagword *flags)
374 {
375 const mach_o_section_name_xlat *xlat;
376 char *res;
377 unsigned int len;
378 const char *pfx = "";
379
380 *name = NULL;
381 *flags = SEC_NO_FLAGS;
382
383 /* First search for a canonical name...
384 xlat will be non-null if there is an entry for segname, secname. */
385 xlat = bfd_mach_o_section_data_for_mach_sect (abfd, segname, secname);
386 if (xlat)
387 {
388 len = strlen (xlat->bfd_name);
389 res = bfd_alloc (abfd, len+1);
390 if (res == NULL)
391 return;
392 memcpy (res, xlat->bfd_name, len+1);
393 *name = res;
394 *flags = xlat->bfd_flags;
395 return;
396 }
397
398 /* ... else we make up a bfd name from the segment concatenated with the
399 section. */
400
401 len = 16 + 1 + 16 + 1;
402
403 /* Put "LC_SEGMENT." prefix if the segment name is weird (ie doesn't start
404 with an underscore. */
405 if (segname[0] != '_')
406 {
407 static const char seg_pfx[] = "LC_SEGMENT.";
408
409 pfx = seg_pfx;
410 len += sizeof (seg_pfx) - 1;
411 }
412
413 res = bfd_alloc (abfd, len);
414 if (res == NULL)
415 return;
416 snprintf (res, len, "%s%.16s.%.16s", pfx, segname, secname);
417 *name = res;
418 }
419
420 /* Convert a bfd section name to a Mach-O segment + section name.
421
422 If the name is a canonical one for which we have a Darwin match
423 return the translation table - which contains defaults for flags,
424 type, attribute and default alignment data.
425
426 Otherwise, expand the bfd_name (assumed to be in the form
427 "[LC_SEGMENT.]<segmentname>.<sectionname>") and return NULL. */
428
429 static const mach_o_section_name_xlat *
430 bfd_mach_o_convert_section_name_to_mach_o (bfd *abfd ATTRIBUTE_UNUSED,
431 asection *sect,
432 bfd_mach_o_section *section)
433 {
434 const mach_o_section_name_xlat *xlat;
435 const char *name = bfd_get_section_name (abfd, sect);
436 const char *segname;
437 const char *dot;
438 unsigned int len;
439 unsigned int seglen;
440 unsigned int seclen;
441
442 memset (section->segname, 0, BFD_MACH_O_SEGNAME_SIZE + 1);
443 memset (section->sectname, 0, BFD_MACH_O_SECTNAME_SIZE + 1);
444
445 /* See if is a canonical name ... */
446 xlat = bfd_mach_o_section_data_for_bfd_name (abfd, name, &segname);
447 if (xlat)
448 {
449 strcpy (section->segname, segname);
450 strcpy (section->sectname, xlat->mach_o_name);
451 return xlat;
452 }
453
454 /* .. else we convert our constructed one back to Mach-O.
455 Strip LC_SEGMENT. prefix, if present. */
456 if (strncmp (name, "LC_SEGMENT.", 11) == 0)
457 name += 11;
458
459 /* Find a dot. */
460 dot = strchr (name, '.');
461 len = strlen (name);
462
463 /* Try to split name into segment and section names. */
464 if (dot && dot != name)
465 {
466 seglen = dot - name;
467 seclen = len - (dot + 1 - name);
468
469 if (seglen < 16 && seclen < 16)
470 {
471 memcpy (section->segname, name, seglen);
472 section->segname[seglen] = 0;
473 memcpy (section->sectname, dot + 1, seclen);
474 section->sectname[seclen] = 0;
475 return NULL;
476 }
477 }
478
479 /* The segment and section names are both missing - don't make them
480 into dots. */
481 if (dot && dot == name)
482 return NULL;
483
484 /* Just duplicate the name into both segment and section. */
485 if (len > 16)
486 len = 16;
487 memcpy (section->segname, name, len);
488 section->segname[len] = 0;
489 memcpy (section->sectname, name, len);
490 section->sectname[len] = 0;
491 return NULL;
492 }
493
494 /* Return the size of an entry for section SEC.
495 Must be called only for symbol pointer section and symbol stubs
496 sections. */
497
498 unsigned int
499 bfd_mach_o_section_get_entry_size (bfd *abfd, bfd_mach_o_section *sec)
500 {
501 switch (sec->flags & BFD_MACH_O_SECTION_TYPE_MASK)
502 {
503 case BFD_MACH_O_S_NON_LAZY_SYMBOL_POINTERS:
504 case BFD_MACH_O_S_LAZY_SYMBOL_POINTERS:
505 return bfd_mach_o_wide_p (abfd) ? 8 : 4;
506 case BFD_MACH_O_S_SYMBOL_STUBS:
507 return sec->reserved2;
508 default:
509 BFD_FAIL ();
510 return 0;
511 }
512 }
513
514 /* Return the number of indirect symbols for a section.
515 Must be called only for symbol pointer section and symbol stubs
516 sections. */
517
518 unsigned int
519 bfd_mach_o_section_get_nbr_indirect (bfd *abfd, bfd_mach_o_section *sec)
520 {
521 unsigned int elsz;
522
523 elsz = bfd_mach_o_section_get_entry_size (abfd, sec);
524 if (elsz == 0)
525 return 0;
526 else
527 return sec->size / elsz;
528 }
529
530
531 /* Copy any private info we understand from the input symbol
532 to the output symbol. */
533
534 bfd_boolean
535 bfd_mach_o_bfd_copy_private_symbol_data (bfd *ibfd ATTRIBUTE_UNUSED,
536 asymbol *isymbol,
537 bfd *obfd ATTRIBUTE_UNUSED,
538 asymbol *osymbol)
539 {
540 bfd_mach_o_asymbol *os, *is;
541 os = (bfd_mach_o_asymbol *)osymbol;
542 is = (bfd_mach_o_asymbol *)isymbol;
543 os->n_type = is->n_type;
544 os->n_sect = is->n_sect;
545 os->n_desc = is->n_desc;
546 os->symbol.udata.i = is->symbol.udata.i;
547 return TRUE;
548 }
549
550 /* Copy any private info we understand from the input section
551 to the output section. */
552
553 bfd_boolean
554 bfd_mach_o_bfd_copy_private_section_data (bfd *ibfd ATTRIBUTE_UNUSED,
555 asection *isection,
556 bfd *obfd ATTRIBUTE_UNUSED,
557 asection *osection)
558 {
559 if (osection->used_by_bfd == NULL)
560 osection->used_by_bfd = isection->used_by_bfd;
561 else
562 if (isection->used_by_bfd != NULL)
563 memcpy (osection->used_by_bfd, isection->used_by_bfd,
564 sizeof (bfd_mach_o_section));
565
566 if (osection->used_by_bfd != NULL)
567 ((bfd_mach_o_section *)osection->used_by_bfd)->bfdsection = osection;
568
569 return TRUE;
570 }
571
572 /* Copy any private info we understand from the input bfd
573 to the output bfd. */
574
575 bfd_boolean
576 bfd_mach_o_bfd_copy_private_bfd_data (bfd *ibfd, bfd *obfd)
577 {
578 if (bfd_get_flavour (ibfd) != bfd_target_mach_o_flavour
579 || bfd_get_flavour (obfd) != bfd_target_mach_o_flavour)
580 return TRUE;
581
582 BFD_ASSERT (bfd_mach_o_valid (ibfd));
583 BFD_ASSERT (bfd_mach_o_valid (obfd));
584
585 /* FIXME: copy commands. */
586
587 return TRUE;
588 }
589
590 /* This allows us to set up to 32 bits of flags (unless we invent some
591 fiendish scheme to subdivide). For now, we'll just set the file flags
592 without error checking - just overwrite. */
593
594 bfd_boolean
595 bfd_mach_o_bfd_set_private_flags (bfd *abfd, flagword flags)
596 {
597 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
598
599 if (!mdata)
600 return FALSE;
601
602 mdata->header.flags = flags;
603 return TRUE;
604 }
605
606 /* Count the total number of symbols. */
607
608 static long
609 bfd_mach_o_count_symbols (bfd *abfd)
610 {
611 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
612
613 if (mdata->symtab == NULL)
614 return 0;
615 return mdata->symtab->nsyms;
616 }
617
618 long
619 bfd_mach_o_get_symtab_upper_bound (bfd *abfd)
620 {
621 long nsyms = bfd_mach_o_count_symbols (abfd);
622
623 return ((nsyms + 1) * sizeof (asymbol *));
624 }
625
626 long
627 bfd_mach_o_canonicalize_symtab (bfd *abfd, asymbol **alocation)
628 {
629 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
630 long nsyms = bfd_mach_o_count_symbols (abfd);
631 bfd_mach_o_symtab_command *sym = mdata->symtab;
632 unsigned long j;
633
634 if (nsyms < 0)
635 return nsyms;
636
637 if (nsyms == 0)
638 {
639 /* Do not try to read symbols if there are none. */
640 alocation[0] = NULL;
641 return 0;
642 }
643
644 if (!bfd_mach_o_read_symtab_symbols (abfd))
645 {
646 (*_bfd_error_handler)
647 (_("bfd_mach_o_canonicalize_symtab: unable to load symbols"));
648 return 0;
649 }
650
651 BFD_ASSERT (sym->symbols != NULL);
652
653 for (j = 0; j < sym->nsyms; j++)
654 alocation[j] = &sym->symbols[j].symbol;
655
656 alocation[j] = NULL;
657
658 return nsyms;
659 }
660
661 /* Create synthetic symbols for indirect symbols. */
662
663 long
664 bfd_mach_o_get_synthetic_symtab (bfd *abfd,
665 long symcount ATTRIBUTE_UNUSED,
666 asymbol **syms ATTRIBUTE_UNUSED,
667 long dynsymcount ATTRIBUTE_UNUSED,
668 asymbol **dynsyms ATTRIBUTE_UNUSED,
669 asymbol **ret)
670 {
671 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
672 bfd_mach_o_dysymtab_command *dysymtab = mdata->dysymtab;
673 bfd_mach_o_symtab_command *symtab = mdata->symtab;
674 asymbol *s;
675 unsigned long count, i, j, n;
676 size_t size;
677 char *names;
678 char *nul_name;
679
680 *ret = NULL;
681
682 /* Stop now if no symbols or no indirect symbols. */
683 if (dysymtab == NULL || symtab == NULL || symtab->symbols == NULL)
684 return 0;
685
686 if (dysymtab->nindirectsyms == 0)
687 return 0;
688
689 /* We need to allocate a bfd symbol for every indirect symbol and to
690 allocate the memory for its name. */
691 count = dysymtab->nindirectsyms;
692 size = count * sizeof (asymbol) + 1;
693
694 for (j = 0; j < count; j++)
695 {
696 unsigned int isym = dysymtab->indirect_syms[j];
697
698 /* Some indirect symbols are anonymous. */
699 if (isym < symtab->nsyms && symtab->symbols[isym].symbol.name)
700 size += strlen (symtab->symbols[isym].symbol.name) + sizeof ("$stub");
701 }
702
703 s = *ret = (asymbol *) bfd_malloc (size);
704 if (s == NULL)
705 return -1;
706 names = (char *) (s + count);
707 nul_name = names;
708 *names++ = 0;
709
710 n = 0;
711 for (i = 0; i < mdata->nsects; i++)
712 {
713 bfd_mach_o_section *sec = mdata->sections[i];
714 unsigned int first, last;
715 bfd_vma addr;
716 bfd_vma entry_size;
717
718 switch (sec->flags & BFD_MACH_O_SECTION_TYPE_MASK)
719 {
720 case BFD_MACH_O_S_NON_LAZY_SYMBOL_POINTERS:
721 case BFD_MACH_O_S_LAZY_SYMBOL_POINTERS:
722 case BFD_MACH_O_S_SYMBOL_STUBS:
723 /* Only these sections have indirect symbols. */
724 first = sec->reserved1;
725 last = first + bfd_mach_o_section_get_nbr_indirect (abfd, sec);
726 addr = sec->addr;
727 entry_size = bfd_mach_o_section_get_entry_size (abfd, sec);
728 for (j = first; j < last; j++)
729 {
730 unsigned int isym = dysymtab->indirect_syms[j];
731
732 s->flags = BSF_GLOBAL | BSF_SYNTHETIC;
733 s->section = sec->bfdsection;
734 s->value = addr - sec->addr;
735 s->udata.p = NULL;
736
737 if (isym < symtab->nsyms
738 && symtab->symbols[isym].symbol.name)
739 {
740 const char *sym = symtab->symbols[isym].symbol.name;
741 size_t len;
742
743 s->name = names;
744 len = strlen (sym);
745 memcpy (names, sym, len);
746 names += len;
747 memcpy (names, "$stub", sizeof ("$stub"));
748 names += sizeof ("$stub");
749 }
750 else
751 s->name = nul_name;
752
753 addr += entry_size;
754 s++;
755 n++;
756 }
757 break;
758 default:
759 break;
760 }
761 }
762
763 return n;
764 }
765
766 void
767 bfd_mach_o_get_symbol_info (bfd *abfd ATTRIBUTE_UNUSED,
768 asymbol *symbol,
769 symbol_info *ret)
770 {
771 bfd_symbol_info (symbol, ret);
772 }
773
774 void
775 bfd_mach_o_print_symbol (bfd *abfd,
776 void * afile,
777 asymbol *symbol,
778 bfd_print_symbol_type how)
779 {
780 FILE *file = (FILE *) afile;
781 const char *name;
782 bfd_mach_o_asymbol *asym = (bfd_mach_o_asymbol *)symbol;
783
784 switch (how)
785 {
786 case bfd_print_symbol_name:
787 fprintf (file, "%s", symbol->name);
788 break;
789 default:
790 bfd_print_symbol_vandf (abfd, (void *) file, symbol);
791 if (asym->n_type & BFD_MACH_O_N_STAB)
792 name = bfd_get_stab_name (asym->n_type);
793 else
794 switch (asym->n_type & BFD_MACH_O_N_TYPE)
795 {
796 case BFD_MACH_O_N_UNDF:
797 if (symbol->value == 0)
798 name = "UND";
799 else
800 name = "COM";
801 break;
802 case BFD_MACH_O_N_ABS:
803 name = "ABS";
804 break;
805 case BFD_MACH_O_N_INDR:
806 name = "INDR";
807 break;
808 case BFD_MACH_O_N_PBUD:
809 name = "PBUD";
810 break;
811 case BFD_MACH_O_N_SECT:
812 name = "SECT";
813 break;
814 default:
815 name = "???";
816 break;
817 }
818 if (name == NULL)
819 name = "";
820 fprintf (file, " %02x %-6s %02x %04x",
821 asym->n_type, name, asym->n_sect, asym->n_desc);
822 if ((asym->n_type & BFD_MACH_O_N_STAB) == 0
823 && (asym->n_type & BFD_MACH_O_N_TYPE) == BFD_MACH_O_N_SECT)
824 fprintf (file, " [%s]", symbol->section->name);
825 fprintf (file, " %s", symbol->name);
826 }
827 }
828
829 static void
830 bfd_mach_o_convert_architecture (bfd_mach_o_cpu_type mtype,
831 bfd_mach_o_cpu_subtype msubtype,
832 enum bfd_architecture *type,
833 unsigned long *subtype)
834 {
835 *subtype = bfd_arch_unknown;
836
837 switch (mtype)
838 {
839 case BFD_MACH_O_CPU_TYPE_VAX:
840 *type = bfd_arch_vax;
841 break;
842 case BFD_MACH_O_CPU_TYPE_MC680x0:
843 *type = bfd_arch_m68k;
844 break;
845 case BFD_MACH_O_CPU_TYPE_I386:
846 *type = bfd_arch_i386;
847 *subtype = bfd_mach_i386_i386;
848 break;
849 case BFD_MACH_O_CPU_TYPE_X86_64:
850 *type = bfd_arch_i386;
851 *subtype = bfd_mach_x86_64;
852 break;
853 case BFD_MACH_O_CPU_TYPE_MIPS:
854 *type = bfd_arch_mips;
855 break;
856 case BFD_MACH_O_CPU_TYPE_MC98000:
857 *type = bfd_arch_m98k;
858 break;
859 case BFD_MACH_O_CPU_TYPE_HPPA:
860 *type = bfd_arch_hppa;
861 break;
862 case BFD_MACH_O_CPU_TYPE_ARM:
863 *type = bfd_arch_arm;
864 switch (msubtype)
865 {
866 case BFD_MACH_O_CPU_SUBTYPE_ARM_V4T:
867 *subtype = bfd_mach_arm_4T;
868 break;
869 case BFD_MACH_O_CPU_SUBTYPE_ARM_V6:
870 *subtype = bfd_mach_arm_4T; /* Best fit ? */
871 break;
872 case BFD_MACH_O_CPU_SUBTYPE_ARM_V5TEJ:
873 *subtype = bfd_mach_arm_5TE;
874 break;
875 case BFD_MACH_O_CPU_SUBTYPE_ARM_XSCALE:
876 *subtype = bfd_mach_arm_XScale;
877 break;
878 case BFD_MACH_O_CPU_SUBTYPE_ARM_V7:
879 *subtype = bfd_mach_arm_5TE; /* Best fit ? */
880 break;
881 case BFD_MACH_O_CPU_SUBTYPE_ARM_ALL:
882 default:
883 break;
884 }
885 break;
886 case BFD_MACH_O_CPU_TYPE_MC88000:
887 *type = bfd_arch_m88k;
888 break;
889 case BFD_MACH_O_CPU_TYPE_SPARC:
890 *type = bfd_arch_sparc;
891 *subtype = bfd_mach_sparc;
892 break;
893 case BFD_MACH_O_CPU_TYPE_I860:
894 *type = bfd_arch_i860;
895 break;
896 case BFD_MACH_O_CPU_TYPE_ALPHA:
897 *type = bfd_arch_alpha;
898 break;
899 case BFD_MACH_O_CPU_TYPE_POWERPC:
900 *type = bfd_arch_powerpc;
901 *subtype = bfd_mach_ppc;
902 break;
903 case BFD_MACH_O_CPU_TYPE_POWERPC_64:
904 *type = bfd_arch_powerpc;
905 *subtype = bfd_mach_ppc64;
906 break;
907 default:
908 *type = bfd_arch_unknown;
909 break;
910 }
911 }
912
913 static bfd_boolean
914 bfd_mach_o_write_header (bfd *abfd, bfd_mach_o_header *header)
915 {
916 struct mach_o_header_external raw;
917 unsigned int size;
918
919 size = mach_o_wide_p (header) ?
920 BFD_MACH_O_HEADER_64_SIZE : BFD_MACH_O_HEADER_SIZE;
921
922 bfd_h_put_32 (abfd, header->magic, raw.magic);
923 bfd_h_put_32 (abfd, header->cputype, raw.cputype);
924 bfd_h_put_32 (abfd, header->cpusubtype, raw.cpusubtype);
925 bfd_h_put_32 (abfd, header->filetype, raw.filetype);
926 bfd_h_put_32 (abfd, header->ncmds, raw.ncmds);
927 bfd_h_put_32 (abfd, header->sizeofcmds, raw.sizeofcmds);
928 bfd_h_put_32 (abfd, header->flags, raw.flags);
929
930 if (mach_o_wide_p (header))
931 bfd_h_put_32 (abfd, header->reserved, raw.reserved);
932
933 if (bfd_seek (abfd, 0, SEEK_SET) != 0
934 || bfd_bwrite (&raw, size, abfd) != size)
935 return FALSE;
936
937 return TRUE;
938 }
939
940 static int
941 bfd_mach_o_write_thread (bfd *abfd, bfd_mach_o_load_command *command)
942 {
943 bfd_mach_o_thread_command *cmd = &command->command.thread;
944 unsigned int i;
945 struct mach_o_thread_command_external raw;
946 unsigned int offset;
947
948 BFD_ASSERT ((command->type == BFD_MACH_O_LC_THREAD)
949 || (command->type == BFD_MACH_O_LC_UNIXTHREAD));
950
951 offset = 8;
952 for (i = 0; i < cmd->nflavours; i++)
953 {
954 BFD_ASSERT ((cmd->flavours[i].size % 4) == 0);
955 BFD_ASSERT (cmd->flavours[i].offset ==
956 (command->offset + offset + BFD_MACH_O_LC_SIZE));
957
958 bfd_h_put_32 (abfd, cmd->flavours[i].flavour, raw.flavour);
959 bfd_h_put_32 (abfd, (cmd->flavours[i].size / 4), raw.count);
960
961 if (bfd_seek (abfd, command->offset + offset, SEEK_SET) != 0
962 || bfd_bwrite (&raw, sizeof (raw), abfd) != sizeof (raw))
963 return -1;
964
965 offset += cmd->flavours[i].size + sizeof (raw);
966 }
967
968 return 0;
969 }
970
971 long
972 bfd_mach_o_get_reloc_upper_bound (bfd *abfd ATTRIBUTE_UNUSED,
973 asection *asect)
974 {
975 return (asect->reloc_count + 1) * sizeof (arelent *);
976 }
977
978 static int
979 bfd_mach_o_canonicalize_one_reloc (bfd *abfd,
980 struct mach_o_reloc_info_external *raw,
981 arelent *res, asymbol **syms)
982 {
983 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
984 bfd_mach_o_backend_data *bed = bfd_mach_o_get_backend_data (abfd);
985 bfd_mach_o_reloc_info reloc;
986 bfd_vma addr;
987 bfd_vma symnum;
988 asymbol **sym;
989
990 addr = bfd_get_32 (abfd, raw->r_address);
991 symnum = bfd_get_32 (abfd, raw->r_symbolnum);
992
993 if (addr & BFD_MACH_O_SR_SCATTERED)
994 {
995 unsigned int j;
996
997 /* Scattered relocation.
998 Extract section and offset from r_value. */
999 res->sym_ptr_ptr = NULL;
1000 res->addend = 0;
1001 for (j = 0; j < mdata->nsects; j++)
1002 {
1003 bfd_mach_o_section *sect = mdata->sections[j];
1004 if (symnum >= sect->addr && symnum < sect->addr + sect->size)
1005 {
1006 res->sym_ptr_ptr = sect->bfdsection->symbol_ptr_ptr;
1007 res->addend = symnum - sect->addr;
1008 break;
1009 }
1010 }
1011 res->address = BFD_MACH_O_GET_SR_ADDRESS (addr);
1012 reloc.r_type = BFD_MACH_O_GET_SR_TYPE (addr);
1013 reloc.r_length = BFD_MACH_O_GET_SR_LENGTH (addr);
1014 reloc.r_pcrel = addr & BFD_MACH_O_SR_PCREL;
1015 reloc.r_scattered = 1;
1016 }
1017 else
1018 {
1019 unsigned int num = BFD_MACH_O_GET_R_SYMBOLNUM (symnum);
1020 res->addend = 0;
1021 res->address = addr;
1022 if (symnum & BFD_MACH_O_R_EXTERN)
1023 {
1024 sym = syms + num;
1025 reloc.r_extern = 1;
1026 }
1027 else
1028 {
1029 BFD_ASSERT (num != 0);
1030 BFD_ASSERT (num <= mdata->nsects);
1031 sym = mdata->sections[num - 1]->bfdsection->symbol_ptr_ptr;
1032 /* For a symbol defined in section S, the addend (stored in the
1033 binary) contains the address of the section. To comply with
1034 bfd conventio, substract the section address.
1035 Use the address from the header, so that the user can modify
1036 the vma of the section. */
1037 res->addend = -mdata->sections[num - 1]->addr;
1038 reloc.r_extern = 0;
1039 }
1040 res->sym_ptr_ptr = sym;
1041 reloc.r_type = BFD_MACH_O_GET_R_TYPE (symnum);
1042 reloc.r_length = BFD_MACH_O_GET_R_LENGTH (symnum);
1043 reloc.r_pcrel = (symnum & BFD_MACH_O_R_PCREL) ? 1 : 0;
1044 reloc.r_scattered = 0;
1045 }
1046
1047 if (!(*bed->_bfd_mach_o_swap_reloc_in)(res, &reloc))
1048 return -1;
1049 return 0;
1050 }
1051
1052 static int
1053 bfd_mach_o_canonicalize_relocs (bfd *abfd, unsigned long filepos,
1054 unsigned long count,
1055 arelent *res, asymbol **syms)
1056 {
1057 unsigned long i;
1058 struct mach_o_reloc_info_external *native_relocs;
1059 bfd_size_type native_size;
1060
1061 /* Allocate and read relocs. */
1062 native_size = count * BFD_MACH_O_RELENT_SIZE;
1063 native_relocs =
1064 (struct mach_o_reloc_info_external *) bfd_malloc (native_size);
1065 if (native_relocs == NULL)
1066 return -1;
1067
1068 if (bfd_seek (abfd, filepos, SEEK_SET) != 0
1069 || bfd_bread (native_relocs, native_size, abfd) != native_size)
1070 goto err;
1071
1072 for (i = 0; i < count; i++)
1073 {
1074 if (bfd_mach_o_canonicalize_one_reloc (abfd, &native_relocs[i],
1075 &res[i], syms) < 0)
1076 goto err;
1077 }
1078 free (native_relocs);
1079 return i;
1080 err:
1081 free (native_relocs);
1082 return -1;
1083 }
1084
1085 long
1086 bfd_mach_o_canonicalize_reloc (bfd *abfd, asection *asect,
1087 arelent **rels, asymbol **syms)
1088 {
1089 bfd_mach_o_backend_data *bed = bfd_mach_o_get_backend_data (abfd);
1090 unsigned long i;
1091 arelent *res;
1092
1093 if (asect->reloc_count == 0)
1094 return 0;
1095
1096 /* No need to go further if we don't know how to read relocs. */
1097 if (bed->_bfd_mach_o_swap_reloc_in == NULL)
1098 return 0;
1099
1100 if (asect->relocation == NULL)
1101 {
1102 res = bfd_malloc (asect->reloc_count * sizeof (arelent));
1103 if (res == NULL)
1104 return -1;
1105
1106 if (bfd_mach_o_canonicalize_relocs (abfd, asect->rel_filepos,
1107 asect->reloc_count, res, syms) < 0)
1108 {
1109 free (res);
1110 return -1;
1111 }
1112 asect->relocation = res;
1113 }
1114
1115 res = asect->relocation;
1116 for (i = 0; i < asect->reloc_count; i++)
1117 rels[i] = &res[i];
1118 rels[i] = NULL;
1119
1120 return i;
1121 }
1122
1123 long
1124 bfd_mach_o_get_dynamic_reloc_upper_bound (bfd *abfd)
1125 {
1126 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
1127
1128 if (mdata->dysymtab == NULL)
1129 return 1;
1130 return (mdata->dysymtab->nextrel + mdata->dysymtab->nlocrel + 1)
1131 * sizeof (arelent *);
1132 }
1133
1134 long
1135 bfd_mach_o_canonicalize_dynamic_reloc (bfd *abfd, arelent **rels,
1136 struct bfd_symbol **syms)
1137 {
1138 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
1139 bfd_mach_o_dysymtab_command *dysymtab = mdata->dysymtab;
1140 bfd_mach_o_backend_data *bed = bfd_mach_o_get_backend_data (abfd);
1141 unsigned long i;
1142 arelent *res;
1143
1144 if (dysymtab == NULL)
1145 return 0;
1146 if (dysymtab->nextrel == 0 && dysymtab->nlocrel == 0)
1147 return 0;
1148
1149 /* No need to go further if we don't know how to read relocs. */
1150 if (bed->_bfd_mach_o_swap_reloc_in == NULL)
1151 return 0;
1152
1153 if (mdata->dyn_reloc_cache == NULL)
1154 {
1155 res = bfd_malloc ((dysymtab->nextrel + dysymtab->nlocrel)
1156 * sizeof (arelent));
1157 if (res == NULL)
1158 return -1;
1159
1160 if (bfd_mach_o_canonicalize_relocs (abfd, dysymtab->extreloff,
1161 dysymtab->nextrel, res, syms) < 0)
1162 {
1163 free (res);
1164 return -1;
1165 }
1166
1167 if (bfd_mach_o_canonicalize_relocs (abfd, dysymtab->locreloff,
1168 dysymtab->nlocrel,
1169 res + dysymtab->nextrel, syms) < 0)
1170 {
1171 free (res);
1172 return -1;
1173 }
1174
1175 mdata->dyn_reloc_cache = res;
1176 }
1177
1178 res = mdata->dyn_reloc_cache;
1179 for (i = 0; i < dysymtab->nextrel + dysymtab->nlocrel; i++)
1180 rels[i] = &res[i];
1181 rels[i] = NULL;
1182 return i;
1183 }
1184
1185 static bfd_boolean
1186 bfd_mach_o_write_relocs (bfd *abfd, bfd_mach_o_section *section)
1187 {
1188 unsigned int i;
1189 arelent **entries;
1190 asection *sec;
1191 bfd_mach_o_backend_data *bed = bfd_mach_o_get_backend_data (abfd);
1192
1193 sec = section->bfdsection;
1194 if (sec->reloc_count == 0)
1195 return TRUE;
1196
1197 if (bed->_bfd_mach_o_swap_reloc_out == NULL)
1198 return TRUE;
1199
1200 if (bfd_seek (abfd, section->reloff, SEEK_SET) != 0)
1201 return FALSE;
1202
1203 /* Convert and write. */
1204 entries = section->bfdsection->orelocation;
1205 for (i = 0; i < section->nreloc; i++)
1206 {
1207 arelent *rel = entries[i];
1208 struct mach_o_reloc_info_external raw;
1209 bfd_mach_o_reloc_info info, *pinfo = &info;
1210
1211 /* Convert relocation to an intermediate representation. */
1212 if (!(*bed->_bfd_mach_o_swap_reloc_out) (rel, pinfo))
1213 return FALSE;
1214
1215 /* Lower the relocation info. */
1216 if (pinfo->r_scattered)
1217 {
1218 unsigned long v;
1219
1220 v = BFD_MACH_O_SR_SCATTERED
1221 | (pinfo->r_pcrel ? BFD_MACH_O_SR_PCREL : 0)
1222 | BFD_MACH_O_SET_SR_LENGTH(pinfo->r_length)
1223 | BFD_MACH_O_SET_SR_TYPE(pinfo->r_type)
1224 | BFD_MACH_O_SET_SR_ADDRESS(pinfo->r_address);
1225 /* Note: scattered relocs have field in reverse order... */
1226 bfd_put_32 (abfd, v, raw.r_address);
1227 bfd_put_32 (abfd, pinfo->r_value, raw.r_symbolnum);
1228 }
1229 else
1230 {
1231 unsigned long v;
1232
1233 bfd_put_32 (abfd, pinfo->r_address, raw.r_address);
1234 v = BFD_MACH_O_SET_R_SYMBOLNUM (pinfo->r_value)
1235 | (pinfo->r_pcrel ? BFD_MACH_O_R_PCREL : 0)
1236 | BFD_MACH_O_SET_R_LENGTH (pinfo->r_length)
1237 | (pinfo->r_extern ? BFD_MACH_O_R_EXTERN : 0)
1238 | BFD_MACH_O_SET_R_TYPE (pinfo->r_type);
1239 bfd_put_32 (abfd, v, raw.r_symbolnum);
1240 }
1241
1242 if (bfd_bwrite (&raw, BFD_MACH_O_RELENT_SIZE, abfd)
1243 != BFD_MACH_O_RELENT_SIZE)
1244 return FALSE;
1245 }
1246 return TRUE;
1247 }
1248
1249 static int
1250 bfd_mach_o_write_section_32 (bfd *abfd, bfd_mach_o_section *section)
1251 {
1252 struct mach_o_section_32_external raw;
1253
1254 memcpy (raw.sectname, section->sectname, 16);
1255 memcpy (raw.segname, section->segname, 16);
1256 bfd_h_put_32 (abfd, section->addr, raw.addr);
1257 bfd_h_put_32 (abfd, section->size, raw.size);
1258 bfd_h_put_32 (abfd, section->offset, raw.offset);
1259 bfd_h_put_32 (abfd, section->align, raw.align);
1260 bfd_h_put_32 (abfd, section->reloff, raw.reloff);
1261 bfd_h_put_32 (abfd, section->nreloc, raw.nreloc);
1262 bfd_h_put_32 (abfd, section->flags, raw.flags);
1263 bfd_h_put_32 (abfd, section->reserved1, raw.reserved1);
1264 bfd_h_put_32 (abfd, section->reserved2, raw.reserved2);
1265
1266 if (bfd_bwrite (&raw, BFD_MACH_O_SECTION_SIZE, abfd)
1267 != BFD_MACH_O_SECTION_SIZE)
1268 return -1;
1269
1270 return 0;
1271 }
1272
1273 static int
1274 bfd_mach_o_write_section_64 (bfd *abfd, bfd_mach_o_section *section)
1275 {
1276 struct mach_o_section_64_external raw;
1277
1278 memcpy (raw.sectname, section->sectname, 16);
1279 memcpy (raw.segname, section->segname, 16);
1280 bfd_h_put_64 (abfd, section->addr, raw.addr);
1281 bfd_h_put_64 (abfd, section->size, raw.size);
1282 bfd_h_put_32 (abfd, section->offset, raw.offset);
1283 bfd_h_put_32 (abfd, section->align, raw.align);
1284 bfd_h_put_32 (abfd, section->reloff, raw.reloff);
1285 bfd_h_put_32 (abfd, section->nreloc, raw.nreloc);
1286 bfd_h_put_32 (abfd, section->flags, raw.flags);
1287 bfd_h_put_32 (abfd, section->reserved1, raw.reserved1);
1288 bfd_h_put_32 (abfd, section->reserved2, raw.reserved2);
1289 bfd_h_put_32 (abfd, section->reserved3, raw.reserved3);
1290
1291 if (bfd_bwrite (&raw, BFD_MACH_O_SECTION_64_SIZE, abfd)
1292 != BFD_MACH_O_SECTION_64_SIZE)
1293 return -1;
1294
1295 return 0;
1296 }
1297
1298 static int
1299 bfd_mach_o_write_segment_32 (bfd *abfd, bfd_mach_o_load_command *command)
1300 {
1301 struct mach_o_segment_command_32_external raw;
1302 bfd_mach_o_segment_command *seg = &command->command.segment;
1303 bfd_mach_o_section *sec;
1304
1305 BFD_ASSERT (command->type == BFD_MACH_O_LC_SEGMENT);
1306
1307 for (sec = seg->sect_head; sec != NULL; sec = sec->next)
1308 if (!bfd_mach_o_write_relocs (abfd, sec))
1309 return -1;
1310
1311 memcpy (raw.segname, seg->segname, 16);
1312 bfd_h_put_32 (abfd, seg->vmaddr, raw.vmaddr);
1313 bfd_h_put_32 (abfd, seg->vmsize, raw.vmsize);
1314 bfd_h_put_32 (abfd, seg->fileoff, raw.fileoff);
1315 bfd_h_put_32 (abfd, seg->filesize, raw.filesize);
1316 bfd_h_put_32 (abfd, seg->maxprot, raw.maxprot);
1317 bfd_h_put_32 (abfd, seg->initprot, raw.initprot);
1318 bfd_h_put_32 (abfd, seg->nsects, raw.nsects);
1319 bfd_h_put_32 (abfd, seg->flags, raw.flags);
1320
1321 if (bfd_seek (abfd, command->offset + BFD_MACH_O_LC_SIZE, SEEK_SET) != 0
1322 || bfd_bwrite (&raw, sizeof (raw), abfd) != sizeof (raw))
1323 return -1;
1324
1325 for (sec = seg->sect_head; sec != NULL; sec = sec->next)
1326 if (bfd_mach_o_write_section_32 (abfd, sec))
1327 return -1;
1328
1329 return 0;
1330 }
1331
1332 static int
1333 bfd_mach_o_write_segment_64 (bfd *abfd, bfd_mach_o_load_command *command)
1334 {
1335 struct mach_o_segment_command_64_external raw;
1336 bfd_mach_o_segment_command *seg = &command->command.segment;
1337 bfd_mach_o_section *sec;
1338
1339 BFD_ASSERT (command->type == BFD_MACH_O_LC_SEGMENT_64);
1340
1341 for (sec = seg->sect_head; sec != NULL; sec = sec->next)
1342 if (!bfd_mach_o_write_relocs (abfd, sec))
1343 return -1;
1344
1345 memcpy (raw.segname, seg->segname, 16);
1346 bfd_h_put_64 (abfd, seg->vmaddr, raw.vmaddr);
1347 bfd_h_put_64 (abfd, seg->vmsize, raw.vmsize);
1348 bfd_h_put_64 (abfd, seg->fileoff, raw.fileoff);
1349 bfd_h_put_64 (abfd, seg->filesize, raw.filesize);
1350 bfd_h_put_32 (abfd, seg->maxprot, raw.maxprot);
1351 bfd_h_put_32 (abfd, seg->initprot, raw.initprot);
1352 bfd_h_put_32 (abfd, seg->nsects, raw.nsects);
1353 bfd_h_put_32 (abfd, seg->flags, raw.flags);
1354
1355 if (bfd_seek (abfd, command->offset + BFD_MACH_O_LC_SIZE, SEEK_SET) != 0
1356 || bfd_bwrite (&raw, sizeof (raw), abfd) != sizeof (raw))
1357 return -1;
1358
1359 for (sec = seg->sect_head; sec != NULL; sec = sec->next)
1360 if (bfd_mach_o_write_section_64 (abfd, sec))
1361 return -1;
1362
1363 return 0;
1364 }
1365
1366 static bfd_boolean
1367 bfd_mach_o_write_symtab (bfd *abfd, bfd_mach_o_load_command *command)
1368 {
1369 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
1370 bfd_mach_o_symtab_command *sym = &command->command.symtab;
1371 unsigned long i;
1372 unsigned int wide = bfd_mach_o_wide_p (abfd);
1373 unsigned int symlen = wide ? BFD_MACH_O_NLIST_64_SIZE : BFD_MACH_O_NLIST_SIZE;
1374 struct bfd_strtab_hash *strtab;
1375 asymbol **symbols = bfd_get_outsymbols (abfd);
1376
1377 BFD_ASSERT (command->type == BFD_MACH_O_LC_SYMTAB);
1378
1379 /* Write the symbols first. */
1380 mdata->filelen = FILE_ALIGN(mdata->filelen, wide ? 3 : 2);
1381 sym->symoff = mdata->filelen;
1382 if (bfd_seek (abfd, sym->symoff, SEEK_SET) != 0)
1383 return FALSE;
1384
1385 sym->nsyms = bfd_get_symcount (abfd);
1386 mdata->filelen += sym->nsyms * symlen;
1387
1388 strtab = _bfd_stringtab_init ();
1389 if (strtab == NULL)
1390 return FALSE;
1391
1392 if (sym->nsyms > 0)
1393 /* Although we don't strictly need to do this, for compatibility with
1394 Darwin system tools, actually output an empty string for the index
1395 0 entry. */
1396 _bfd_stringtab_add (strtab, "", TRUE, FALSE);
1397
1398 for (i = 0; i < sym->nsyms; i++)
1399 {
1400 bfd_size_type str_index;
1401 bfd_mach_o_asymbol *s = (bfd_mach_o_asymbol *)symbols[i];
1402
1403 if (s->symbol.name == 0 || s->symbol.name[0] == '\0')
1404 /* An index of 0 always means the empty string. */
1405 str_index = 0;
1406 else
1407 {
1408 str_index = _bfd_stringtab_add (strtab, s->symbol.name, TRUE, FALSE);
1409
1410 if (str_index == (bfd_size_type) -1)
1411 goto err;
1412 }
1413
1414 if (wide)
1415 {
1416 struct mach_o_nlist_64_external raw;
1417
1418 bfd_h_put_32 (abfd, str_index, raw.n_strx);
1419 bfd_h_put_8 (abfd, s->n_type, raw.n_type);
1420 bfd_h_put_8 (abfd, s->n_sect, raw.n_sect);
1421 bfd_h_put_16 (abfd, s->n_desc, raw.n_desc);
1422 bfd_h_put_64 (abfd, s->symbol.section->vma + s->symbol.value,
1423 raw.n_value);
1424
1425 if (bfd_bwrite (&raw, sizeof (raw), abfd) != sizeof (raw))
1426 goto err;
1427 }
1428 else
1429 {
1430 struct mach_o_nlist_external raw;
1431
1432 bfd_h_put_32 (abfd, str_index, raw.n_strx);
1433 bfd_h_put_8 (abfd, s->n_type, raw.n_type);
1434 bfd_h_put_8 (abfd, s->n_sect, raw.n_sect);
1435 bfd_h_put_16 (abfd, s->n_desc, raw.n_desc);
1436 bfd_h_put_32 (abfd, s->symbol.section->vma + s->symbol.value,
1437 raw.n_value);
1438
1439 if (bfd_bwrite (&raw, sizeof (raw), abfd) != sizeof (raw))
1440 goto err;
1441 }
1442 }
1443 sym->strsize = _bfd_stringtab_size (strtab);
1444 sym->stroff = mdata->filelen;
1445 mdata->filelen += sym->strsize;
1446
1447 if (_bfd_stringtab_emit (abfd, strtab) != TRUE)
1448 goto err;
1449 _bfd_stringtab_free (strtab);
1450
1451 /* The command. */
1452 {
1453 struct mach_o_symtab_command_external raw;
1454
1455 bfd_h_put_32 (abfd, sym->symoff, raw.symoff);
1456 bfd_h_put_32 (abfd, sym->nsyms, raw.nsyms);
1457 bfd_h_put_32 (abfd, sym->stroff, raw.stroff);
1458 bfd_h_put_32 (abfd, sym->strsize, raw.strsize);
1459
1460 if (bfd_seek (abfd, command->offset + BFD_MACH_O_LC_SIZE, SEEK_SET) != 0
1461 || bfd_bwrite (&raw, sizeof (raw), abfd) != sizeof (raw))
1462 return FALSE;
1463 }
1464
1465 return TRUE;
1466
1467 err:
1468 _bfd_stringtab_free (strtab);
1469 return FALSE;
1470 }
1471
1472 /* Write a dysymtab command.
1473 TODO: Possibly coalesce writes of smaller objects. */
1474
1475 static bfd_boolean
1476 bfd_mach_o_write_dysymtab (bfd *abfd, bfd_mach_o_load_command *command)
1477 {
1478 bfd_mach_o_dysymtab_command *cmd = &command->command.dysymtab;
1479
1480 BFD_ASSERT (command->type == BFD_MACH_O_LC_DYSYMTAB);
1481
1482 if (cmd->nmodtab != 0)
1483 {
1484 unsigned int i;
1485
1486 if (bfd_seek (abfd, cmd->modtaboff, SEEK_SET) != 0)
1487 return FALSE;
1488
1489 for (i = 0; i < cmd->nmodtab; i++)
1490 {
1491 bfd_mach_o_dylib_module *module = &cmd->dylib_module[i];
1492 unsigned int iinit;
1493 unsigned int ninit;
1494
1495 iinit = module->iinit & 0xffff;
1496 iinit |= ((module->iterm & 0xffff) << 16);
1497
1498 ninit = module->ninit & 0xffff;
1499 ninit |= ((module->nterm & 0xffff) << 16);
1500
1501 if (bfd_mach_o_wide_p (abfd))
1502 {
1503 struct mach_o_dylib_module_64_external w;
1504
1505 bfd_h_put_32 (abfd, module->module_name_idx, &w.module_name);
1506 bfd_h_put_32 (abfd, module->iextdefsym, &w.iextdefsym);
1507 bfd_h_put_32 (abfd, module->nextdefsym, &w.nextdefsym);
1508 bfd_h_put_32 (abfd, module->irefsym, &w.irefsym);
1509 bfd_h_put_32 (abfd, module->nrefsym, &w.nrefsym);
1510 bfd_h_put_32 (abfd, module->ilocalsym, &w.ilocalsym);
1511 bfd_h_put_32 (abfd, module->nlocalsym, &w.nlocalsym);
1512 bfd_h_put_32 (abfd, module->iextrel, &w.iextrel);
1513 bfd_h_put_32 (abfd, module->nextrel, &w.nextrel);
1514 bfd_h_put_32 (abfd, iinit, &w.iinit_iterm);
1515 bfd_h_put_32 (abfd, ninit, &w.ninit_nterm);
1516 bfd_h_put_64 (abfd, module->objc_module_info_addr,
1517 &w.objc_module_info_addr);
1518 bfd_h_put_32 (abfd, module->objc_module_info_size,
1519 &w.objc_module_info_size);
1520
1521 if (bfd_bwrite ((void *) &w, sizeof (w), abfd) != sizeof (w))
1522 return FALSE;
1523 }
1524 else
1525 {
1526 struct mach_o_dylib_module_external n;
1527
1528 bfd_h_put_32 (abfd, module->module_name_idx, &n.module_name);
1529 bfd_h_put_32 (abfd, module->iextdefsym, &n.iextdefsym);
1530 bfd_h_put_32 (abfd, module->nextdefsym, &n.nextdefsym);
1531 bfd_h_put_32 (abfd, module->irefsym, &n.irefsym);
1532 bfd_h_put_32 (abfd, module->nrefsym, &n.nrefsym);
1533 bfd_h_put_32 (abfd, module->ilocalsym, &n.ilocalsym);
1534 bfd_h_put_32 (abfd, module->nlocalsym, &n.nlocalsym);
1535 bfd_h_put_32 (abfd, module->iextrel, &n.iextrel);
1536 bfd_h_put_32 (abfd, module->nextrel, &n.nextrel);
1537 bfd_h_put_32 (abfd, iinit, &n.iinit_iterm);
1538 bfd_h_put_32 (abfd, ninit, &n.ninit_nterm);
1539 bfd_h_put_32 (abfd, module->objc_module_info_addr,
1540 &n.objc_module_info_addr);
1541 bfd_h_put_32 (abfd, module->objc_module_info_size,
1542 &n.objc_module_info_size);
1543
1544 if (bfd_bwrite ((void *) &n, sizeof (n), abfd) != sizeof (n))
1545 return FALSE;
1546 }
1547 }
1548 }
1549
1550 if (cmd->ntoc != 0)
1551 {
1552 unsigned int i;
1553
1554 if (bfd_seek (abfd, cmd->tocoff, SEEK_SET) != 0)
1555 return FALSE;
1556
1557 for (i = 0; i < cmd->ntoc; i++)
1558 {
1559 struct mach_o_dylib_table_of_contents_external raw;
1560 bfd_mach_o_dylib_table_of_content *toc = &cmd->dylib_toc[i];
1561
1562 bfd_h_put_32 (abfd, toc->symbol_index, &raw.symbol_index);
1563 bfd_h_put_32 (abfd, toc->module_index, &raw.module_index);
1564
1565 if (bfd_bwrite (&raw, sizeof (raw), abfd) != sizeof (raw))
1566 return FALSE;
1567 }
1568 }
1569
1570 if (cmd->nindirectsyms > 0)
1571 {
1572 unsigned int i;
1573
1574 if (bfd_seek (abfd, cmd->indirectsymoff, SEEK_SET) != 0)
1575 return FALSE;
1576
1577 for (i = 0; i < cmd->nindirectsyms; ++i)
1578 {
1579 unsigned char raw[4];
1580
1581 bfd_h_put_32 (abfd, cmd->indirect_syms[i], &raw);
1582 if (bfd_bwrite (raw, sizeof (raw), abfd) != sizeof (raw))
1583 return FALSE;
1584 }
1585 }
1586
1587 if (cmd->nextrefsyms != 0)
1588 {
1589 unsigned int i;
1590
1591 if (bfd_seek (abfd, cmd->extrefsymoff, SEEK_SET) != 0)
1592 return FALSE;
1593
1594 for (i = 0; i < cmd->nextrefsyms; i++)
1595 {
1596 unsigned long v;
1597 unsigned char raw[4];
1598 bfd_mach_o_dylib_reference *ref = &cmd->ext_refs[i];
1599
1600 /* Fields isym and flags are written as bit-fields, thus we need
1601 a specific processing for endianness. */
1602
1603 if (bfd_big_endian (abfd))
1604 {
1605 v = ((ref->isym & 0xffffff) << 8);
1606 v |= ref->flags & 0xff;
1607 }
1608 else
1609 {
1610 v = ref->isym & 0xffffff;
1611 v |= ((ref->flags & 0xff) << 24);
1612 }
1613
1614 bfd_h_put_32 (abfd, v, raw);
1615 if (bfd_bwrite (raw, sizeof (raw), abfd) != sizeof (raw))
1616 return FALSE;
1617 }
1618 }
1619
1620 /* The command. */
1621 if (bfd_seek (abfd, command->offset + BFD_MACH_O_LC_SIZE, SEEK_SET) != 0)
1622 return FALSE;
1623 else
1624 {
1625 struct mach_o_dysymtab_command_external raw;
1626
1627 bfd_h_put_32 (abfd, cmd->ilocalsym, &raw.ilocalsym);
1628 bfd_h_put_32 (abfd, cmd->nlocalsym, &raw.nlocalsym);
1629 bfd_h_put_32 (abfd, cmd->iextdefsym, &raw.iextdefsym);
1630 bfd_h_put_32 (abfd, cmd->nextdefsym, &raw.nextdefsym);
1631 bfd_h_put_32 (abfd, cmd->iundefsym, &raw.iundefsym);
1632 bfd_h_put_32 (abfd, cmd->nundefsym, &raw.nundefsym);
1633 bfd_h_put_32 (abfd, cmd->tocoff, &raw.tocoff);
1634 bfd_h_put_32 (abfd, cmd->ntoc, &raw.ntoc);
1635 bfd_h_put_32 (abfd, cmd->modtaboff, &raw.modtaboff);
1636 bfd_h_put_32 (abfd, cmd->nmodtab, &raw.nmodtab);
1637 bfd_h_put_32 (abfd, cmd->extrefsymoff, &raw.extrefsymoff);
1638 bfd_h_put_32 (abfd, cmd->nextrefsyms, &raw.nextrefsyms);
1639 bfd_h_put_32 (abfd, cmd->indirectsymoff, &raw.indirectsymoff);
1640 bfd_h_put_32 (abfd, cmd->nindirectsyms, &raw.nindirectsyms);
1641 bfd_h_put_32 (abfd, cmd->extreloff, &raw.extreloff);
1642 bfd_h_put_32 (abfd, cmd->nextrel, &raw.nextrel);
1643 bfd_h_put_32 (abfd, cmd->locreloff, &raw.locreloff);
1644 bfd_h_put_32 (abfd, cmd->nlocrel, &raw.nlocrel);
1645
1646 if (bfd_bwrite (&raw, sizeof (raw), abfd) != sizeof (raw))
1647 return FALSE;
1648 }
1649
1650 return TRUE;
1651 }
1652
1653 static unsigned
1654 bfd_mach_o_primary_symbol_sort_key (bfd_mach_o_asymbol *s)
1655 {
1656 unsigned mtyp = s->n_type & BFD_MACH_O_N_TYPE;
1657
1658 /* Just leave debug symbols where they are (pretend they are local, and
1659 then they will just be sorted on position). */
1660 if (s->n_type & BFD_MACH_O_N_STAB)
1661 return 0;
1662
1663 /* Local (we should never see an undefined local AFAICT). */
1664 if (! (s->n_type & (BFD_MACH_O_N_EXT | BFD_MACH_O_N_PEXT)))
1665 return 0;
1666
1667 /* Common symbols look like undefined externs. */
1668 if (mtyp == BFD_MACH_O_N_UNDF)
1669 return 2;
1670
1671 /* A defined non-local, non-debug symbol. */
1672 return 1;
1673 }
1674
1675 static int
1676 bfd_mach_o_cf_symbols (const void *a, const void *b)
1677 {
1678 bfd_mach_o_asymbol *sa = *(bfd_mach_o_asymbol **) a;
1679 bfd_mach_o_asymbol *sb = *(bfd_mach_o_asymbol **) b;
1680 unsigned int soa, sob;
1681
1682 soa = bfd_mach_o_primary_symbol_sort_key (sa);
1683 sob = bfd_mach_o_primary_symbol_sort_key (sb);
1684 if (soa < sob)
1685 return -1;
1686
1687 if (soa > sob)
1688 return 1;
1689
1690 /* If it's local or stab, just preserve the input order. */
1691 if (soa == 0)
1692 {
1693 if (sa->symbol.udata.i < sb->symbol.udata.i)
1694 return -1;
1695 if (sa->symbol.udata.i > sb->symbol.udata.i)
1696 return 1;
1697
1698 /* This is probably an error. */
1699 return 0;
1700 }
1701
1702 /* The second sort key is name. */
1703 return strcmp (sa->symbol.name, sb->symbol.name);
1704 }
1705
1706 /* Process the symbols.
1707
1708 This should be OK for single-module files - but it is not likely to work
1709 for multi-module shared libraries.
1710
1711 (a) If the application has not filled in the relevant mach-o fields, make
1712 an estimate.
1713
1714 (b) Order them, like this:
1715 ( i) local.
1716 (unsorted)
1717 ( ii) external defined
1718 (by name)
1719 (iii) external undefined/common
1720 (by name)
1721 ( iv) common
1722 (by name)
1723 */
1724
1725 static bfd_boolean
1726 bfd_mach_o_mangle_symbols (bfd *abfd)
1727 {
1728 unsigned long i;
1729 asymbol **symbols = bfd_get_outsymbols (abfd);
1730
1731 if (symbols == NULL || bfd_get_symcount (abfd) == 0)
1732 return TRUE;
1733
1734 for (i = 0; i < bfd_get_symcount (abfd); i++)
1735 {
1736 bfd_mach_o_asymbol *s = (bfd_mach_o_asymbol *)symbols[i];
1737
1738 /* We use this value, which is out-of-range as a symbol index, to signal
1739 that the mach-o-specific data are not filled in and need to be created
1740 from the bfd values. It is much preferable for the application to do
1741 this, since more meaningful diagnostics can be made that way. */
1742
1743 if (s->symbol.udata.i == SYM_MACHO_FIELDS_UNSET)
1744 {
1745 /* No symbol information has been set - therefore determine
1746 it from the bfd symbol flags/info. */
1747 if (s->symbol.section == bfd_abs_section_ptr)
1748 s->n_type = BFD_MACH_O_N_ABS;
1749 else if (s->symbol.section == bfd_und_section_ptr)
1750 {
1751 s->n_type = BFD_MACH_O_N_UNDF;
1752 if (s->symbol.flags & BSF_WEAK)
1753 s->n_desc |= BFD_MACH_O_N_WEAK_REF;
1754 /* mach-o automatically makes undefined symbols extern. */
1755 s->n_type |= BFD_MACH_O_N_EXT;
1756 s->symbol.flags |= BSF_GLOBAL;
1757 }
1758 else if (s->symbol.section == bfd_com_section_ptr)
1759 {
1760 s->n_type = BFD_MACH_O_N_UNDF | BFD_MACH_O_N_EXT;
1761 s->symbol.flags |= BSF_GLOBAL;
1762 }
1763 else
1764 s->n_type = BFD_MACH_O_N_SECT;
1765
1766 if (s->symbol.flags & BSF_GLOBAL)
1767 s->n_type |= BFD_MACH_O_N_EXT;
1768 }
1769
1770 /* Put the section index in, where required. */
1771 if ((s->symbol.section != bfd_abs_section_ptr
1772 && s->symbol.section != bfd_und_section_ptr
1773 && s->symbol.section != bfd_com_section_ptr)
1774 || ((s->n_type & BFD_MACH_O_N_STAB) != 0
1775 && s->symbol.name == NULL))
1776 s->n_sect = s->symbol.section->target_index;
1777
1778 /* Number to preserve order for local and debug syms. */
1779 s->symbol.udata.i = i;
1780 }
1781
1782 /* Sort the symbols. */
1783 qsort ((void *) symbols, (size_t) bfd_get_symcount (abfd),
1784 sizeof (asymbol *), bfd_mach_o_cf_symbols);
1785
1786 for (i = 0; i < bfd_get_symcount (abfd); ++i)
1787 {
1788 bfd_mach_o_asymbol *s = (bfd_mach_o_asymbol *)symbols[i];
1789 s->symbol.udata.i = i; /* renumber. */
1790 }
1791
1792 return TRUE;
1793 }
1794
1795 /* We build a flat table of sections, which can be re-ordered if necessary.
1796 Fill in the section number and other mach-o-specific data. */
1797
1798 static bfd_boolean
1799 bfd_mach_o_mangle_sections (bfd *abfd, bfd_mach_o_data_struct *mdata)
1800 {
1801 asection *sec;
1802 unsigned target_index;
1803 unsigned nsect;
1804
1805 nsect = bfd_count_sections (abfd);
1806
1807 /* Don't do it if it's already set - assume the application knows what it's
1808 doing. */
1809 if (mdata->nsects == nsect
1810 && (mdata->nsects == 0 || mdata->sections != NULL))
1811 return TRUE;
1812
1813 mdata->nsects = nsect;
1814 mdata->sections = bfd_alloc (abfd,
1815 mdata->nsects * sizeof (bfd_mach_o_section *));
1816 if (mdata->sections == NULL)
1817 return FALSE;
1818
1819 /* We need to check that this can be done... */
1820 if (nsect > 255)
1821 (*_bfd_error_handler) (_("mach-o: there are too many sections (%d)"
1822 " maximum is 255,\n"), nsect);
1823
1824 /* Create Mach-O sections.
1825 Section type, attribute and align should have been set when the
1826 section was created - either read in or specified. */
1827 target_index = 0;
1828 for (sec = abfd->sections; sec; sec = sec->next)
1829 {
1830 unsigned bfd_align = bfd_get_section_alignment (abfd, sec);
1831 bfd_mach_o_section *msect = bfd_mach_o_get_mach_o_section (sec);
1832
1833 mdata->sections[target_index] = msect;
1834
1835 msect->addr = bfd_get_section_vma (abfd, sec);
1836 msect->size = bfd_get_section_size (sec);
1837
1838 /* Use the largest alignment set, in case it was bumped after the
1839 section was created. */
1840 msect->align = msect->align > bfd_align ? msect->align : bfd_align;
1841
1842 msect->offset = 0;
1843 sec->target_index = ++target_index;
1844 }
1845
1846 return TRUE;
1847 }
1848
1849 bfd_boolean
1850 bfd_mach_o_write_contents (bfd *abfd)
1851 {
1852 unsigned int i;
1853 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
1854
1855 /* Make the commands, if not already present. */
1856 if (mdata->header.ncmds == 0)
1857 if (!bfd_mach_o_build_commands (abfd))
1858 return FALSE;
1859
1860 if (!bfd_mach_o_write_header (abfd, &mdata->header))
1861 return FALSE;
1862
1863 for (i = 0; i < mdata->header.ncmds; i++)
1864 {
1865 struct mach_o_load_command_external raw;
1866 bfd_mach_o_load_command *cur = &mdata->commands[i];
1867 unsigned long typeflag;
1868
1869 typeflag = cur->type | (cur->type_required ? BFD_MACH_O_LC_REQ_DYLD : 0);
1870
1871 bfd_h_put_32 (abfd, typeflag, raw.cmd);
1872 bfd_h_put_32 (abfd, cur->len, raw.cmdsize);
1873
1874 if (bfd_seek (abfd, cur->offset, SEEK_SET) != 0
1875 || bfd_bwrite (&raw, BFD_MACH_O_LC_SIZE, abfd) != 8)
1876 return FALSE;
1877
1878 switch (cur->type)
1879 {
1880 case BFD_MACH_O_LC_SEGMENT:
1881 if (bfd_mach_o_write_segment_32 (abfd, cur) != 0)
1882 return FALSE;
1883 break;
1884 case BFD_MACH_O_LC_SEGMENT_64:
1885 if (bfd_mach_o_write_segment_64 (abfd, cur) != 0)
1886 return FALSE;
1887 break;
1888 case BFD_MACH_O_LC_SYMTAB:
1889 if (!bfd_mach_o_write_symtab (abfd, cur))
1890 return FALSE;
1891 break;
1892 case BFD_MACH_O_LC_DYSYMTAB:
1893 if (!bfd_mach_o_write_dysymtab (abfd, cur))
1894 return FALSE;
1895 break;
1896 case BFD_MACH_O_LC_SYMSEG:
1897 break;
1898 case BFD_MACH_O_LC_THREAD:
1899 case BFD_MACH_O_LC_UNIXTHREAD:
1900 if (bfd_mach_o_write_thread (abfd, cur) != 0)
1901 return FALSE;
1902 break;
1903 case BFD_MACH_O_LC_LOADFVMLIB:
1904 case BFD_MACH_O_LC_IDFVMLIB:
1905 case BFD_MACH_O_LC_IDENT:
1906 case BFD_MACH_O_LC_FVMFILE:
1907 case BFD_MACH_O_LC_PREPAGE:
1908 case BFD_MACH_O_LC_LOAD_DYLIB:
1909 case BFD_MACH_O_LC_LOAD_WEAK_DYLIB:
1910 case BFD_MACH_O_LC_ID_DYLIB:
1911 case BFD_MACH_O_LC_REEXPORT_DYLIB:
1912 case BFD_MACH_O_LC_LOAD_UPWARD_DYLIB:
1913 case BFD_MACH_O_LC_LOAD_DYLINKER:
1914 case BFD_MACH_O_LC_ID_DYLINKER:
1915 case BFD_MACH_O_LC_PREBOUND_DYLIB:
1916 case BFD_MACH_O_LC_ROUTINES:
1917 case BFD_MACH_O_LC_SUB_FRAMEWORK:
1918 break;
1919 default:
1920 (*_bfd_error_handler) (_("unable to write unknown load command 0x%lx"),
1921 (unsigned long) cur->type);
1922 return FALSE;
1923 }
1924 }
1925
1926 return TRUE;
1927 }
1928
1929 static void
1930 bfd_mach_o_append_section_to_segment (bfd_mach_o_segment_command *seg,
1931 asection *sec)
1932 {
1933 bfd_mach_o_section *s = (bfd_mach_o_section *)sec->used_by_bfd;
1934 if (seg->sect_head == NULL)
1935 seg->sect_head = s;
1936 else
1937 seg->sect_tail->next = s;
1938 seg->sect_tail = s;
1939 }
1940
1941 /* Create section Mach-O flags from BFD flags. */
1942
1943 static void
1944 bfd_mach_o_set_section_flags_from_bfd (bfd *abfd ATTRIBUTE_UNUSED, asection *sec)
1945 {
1946 flagword bfd_flags;
1947 bfd_mach_o_section *s = bfd_mach_o_get_mach_o_section (sec);
1948
1949 /* Create default flags. */
1950 bfd_flags = bfd_get_section_flags (abfd, sec);
1951 if ((bfd_flags & SEC_CODE) == SEC_CODE)
1952 s->flags = BFD_MACH_O_S_ATTR_PURE_INSTRUCTIONS
1953 | BFD_MACH_O_S_ATTR_SOME_INSTRUCTIONS
1954 | BFD_MACH_O_S_REGULAR;
1955 else if ((bfd_flags & (SEC_ALLOC | SEC_LOAD)) == SEC_ALLOC)
1956 s->flags = BFD_MACH_O_S_ZEROFILL;
1957 else if (bfd_flags & SEC_DEBUGGING)
1958 s->flags = BFD_MACH_O_S_REGULAR | BFD_MACH_O_S_ATTR_DEBUG;
1959 else
1960 s->flags = BFD_MACH_O_S_REGULAR;
1961 }
1962
1963 /* Count the number of sections in the list for the segment named.
1964
1965 The special case of NULL or "" for the segment name is valid for
1966 an MH_OBJECT file and means 'all sections available'.
1967
1968 Requires that the sections table in mdata be filled in.
1969
1970 Returns the number of sections (0 is valid).
1971 Any number > 255 signals an invalid section count, although we will,
1972 perhaps, allow the file to be written (in line with Darwin tools up
1973 to XCode 4).
1974
1975 A section count of (unsigned long) -1 signals a definite error. */
1976
1977 static unsigned long
1978 bfd_mach_o_count_sections_for_seg (const char *segment,
1979 bfd_mach_o_data_struct *mdata)
1980 {
1981 unsigned i,j;
1982 if (mdata == NULL || mdata->sections == NULL)
1983 return (unsigned long) -1;
1984
1985 /* The MH_OBJECT case, all sections are considered; Although nsects is
1986 is an unsigned long, the maximum valid section count is 255 and this
1987 will have been checked already by mangle_sections. */
1988 if (segment == NULL || segment[0] == '\0')
1989 return mdata->nsects;
1990
1991 /* Count the number of sections we see in this segment. */
1992 j = 0;
1993 for (i = 0; i < mdata->nsects; ++i)
1994 {
1995 bfd_mach_o_section *s = mdata->sections[i];
1996 if (strncmp (segment, s->segname, BFD_MACH_O_SEGNAME_SIZE) == 0)
1997 j++;
1998 }
1999 return j;
2000 }
2001
2002 static bfd_boolean
2003 bfd_mach_o_build_seg_command (const char *segment,
2004 bfd_mach_o_data_struct *mdata,
2005 bfd_mach_o_segment_command *seg)
2006 {
2007 unsigned i;
2008 int is_mho = (segment == NULL || segment[0] == '\0');
2009
2010 /* Fill segment command. */
2011 if (is_mho)
2012 memset (seg->segname, 0, sizeof (seg->segname));
2013 else
2014 strncpy (seg->segname, segment, sizeof (seg->segname));
2015
2016 /* TODO: fix this up for non-MH_OBJECT cases. */
2017 seg->vmaddr = 0;
2018 seg->vmsize = 0;
2019
2020 seg->fileoff = mdata->filelen;
2021 seg->filesize = 0;
2022 seg->maxprot = BFD_MACH_O_PROT_READ | BFD_MACH_O_PROT_WRITE
2023 | BFD_MACH_O_PROT_EXECUTE;
2024 seg->initprot = seg->maxprot;
2025 seg->flags = 0;
2026 seg->sect_head = NULL;
2027 seg->sect_tail = NULL;
2028
2029 /* Append sections to the segment. */
2030
2031 for (i = 0; i < mdata->nsects; ++i)
2032 {
2033 bfd_mach_o_section *s = mdata->sections[i];
2034 asection *sec = s->bfdsection;
2035
2036 /* If we're not making an MH_OBJECT, check whether this section is from
2037 our segment, and skip if not. Otherwise, just add all sections. */
2038 if (! is_mho
2039 && strncmp (segment, s->segname, BFD_MACH_O_SEGNAME_SIZE) != 0)
2040 continue;
2041
2042 bfd_mach_o_append_section_to_segment (seg, sec);
2043
2044 s->offset = 0;
2045 if (s->size > 0)
2046 {
2047 seg->vmsize = FILE_ALIGN (seg->vmsize, s->align);
2048 seg->vmsize += s->size;
2049 }
2050
2051 /* Zerofill sections have zero file size & offset,
2052 and are not written. */
2053 if ((s->flags & BFD_MACH_O_SECTION_TYPE_MASK) == BFD_MACH_O_S_ZEROFILL
2054 || (s->flags & BFD_MACH_O_SECTION_TYPE_MASK)
2055 == BFD_MACH_O_S_GB_ZEROFILL)
2056 continue;
2057
2058 if (s->size > 0)
2059 {
2060 mdata->filelen = FILE_ALIGN (mdata->filelen, s->align);
2061 s->offset = mdata->filelen;
2062 }
2063
2064 sec->filepos = s->offset;
2065
2066 mdata->filelen += s->size;
2067 }
2068
2069 seg->filesize = mdata->filelen - seg->fileoff;
2070 seg->filesize = FILE_ALIGN(seg->filesize, 2);
2071
2072 /* Allocate relocation room. */
2073 mdata->filelen = FILE_ALIGN(mdata->filelen, 2);
2074
2075 for (i = 0; i < mdata->nsects; ++i)
2076 {
2077 bfd_mach_o_section *ms = mdata->sections[i];
2078 asection *sec = ms->bfdsection;
2079
2080 if ((ms->nreloc = sec->reloc_count) == 0)
2081 {
2082 ms->reloff = 0;
2083 continue;
2084 }
2085 sec->rel_filepos = mdata->filelen;
2086 ms->reloff = sec->rel_filepos;
2087 mdata->filelen += sec->reloc_count * BFD_MACH_O_RELENT_SIZE;
2088 }
2089
2090 return TRUE;
2091 }
2092
2093 /* Count the number of indirect symbols in the image.
2094 Requires that the sections are in their final order. */
2095
2096 static unsigned int
2097 bfd_mach_o_count_indirect_symbols (bfd *abfd, bfd_mach_o_data_struct *mdata)
2098 {
2099 unsigned int i;
2100 unsigned int nisyms = 0;
2101
2102 for (i = 0; i < mdata->nsects; ++i)
2103 {
2104 bfd_mach_o_section *sec = mdata->sections[i];
2105
2106 switch (sec->flags & BFD_MACH_O_SECTION_TYPE_MASK)
2107 {
2108 case BFD_MACH_O_S_NON_LAZY_SYMBOL_POINTERS:
2109 case BFD_MACH_O_S_LAZY_SYMBOL_POINTERS:
2110 case BFD_MACH_O_S_SYMBOL_STUBS:
2111 nisyms += bfd_mach_o_section_get_nbr_indirect (abfd, sec);
2112 break;
2113 default:
2114 break;
2115 }
2116 }
2117 return nisyms;
2118 }
2119
2120 static bfd_boolean
2121 bfd_mach_o_build_dysymtab_command (bfd *abfd,
2122 bfd_mach_o_data_struct *mdata,
2123 bfd_mach_o_load_command *cmd)
2124 {
2125 bfd_mach_o_dysymtab_command *dsym = &cmd->command.dysymtab;
2126
2127 /* TODO:
2128 We are not going to try and fill these in yet and, moreover, we are
2129 going to bail if they are already set. */
2130 if (dsym->nmodtab != 0
2131 || dsym->ntoc != 0
2132 || dsym->nextrefsyms != 0)
2133 {
2134 (*_bfd_error_handler) (_("sorry: modtab, toc and extrefsyms are not yet"
2135 " implemented for dysymtab commands."));
2136 return FALSE;
2137 }
2138
2139 dsym->ilocalsym = 0;
2140
2141 if (bfd_get_symcount (abfd) > 0)
2142 {
2143 asymbol **symbols = bfd_get_outsymbols (abfd);
2144 unsigned long i;
2145
2146 /* Count the number of each kind of symbol. */
2147 for (i = 0; i < bfd_get_symcount (abfd); ++i)
2148 {
2149 bfd_mach_o_asymbol *s = (bfd_mach_o_asymbol *)symbols[i];
2150 if (s->n_type & (BFD_MACH_O_N_EXT | BFD_MACH_O_N_PEXT))
2151 break;
2152 }
2153 dsym->nlocalsym = i;
2154 dsym->iextdefsym = i;
2155 for (; i < bfd_get_symcount (abfd); ++i)
2156 {
2157 bfd_mach_o_asymbol *s = (bfd_mach_o_asymbol *)symbols[i];
2158 if ((s->n_type & BFD_MACH_O_N_TYPE) == BFD_MACH_O_N_UNDF)
2159 break;
2160 }
2161 dsym->nextdefsym = i - dsym->nlocalsym;
2162 dsym->iundefsym = dsym->nextdefsym + dsym->iextdefsym;
2163 dsym->nundefsym = bfd_get_symcount (abfd)
2164 - dsym->nlocalsym
2165 - dsym->nextdefsym;
2166 }
2167 else
2168 {
2169 dsym->nlocalsym = 0;
2170 dsym->iextdefsym = 0;
2171 dsym->nextdefsym = 0;
2172 dsym->iundefsym = 0;
2173 dsym->nundefsym = 0;
2174 }
2175
2176 dsym->nindirectsyms = bfd_mach_o_count_indirect_symbols (abfd, mdata);
2177 if (dsym->nindirectsyms > 0)
2178 {
2179 unsigned i;
2180 unsigned n;
2181
2182 mdata->filelen = FILE_ALIGN (mdata->filelen, 2);
2183 dsym->indirectsymoff = mdata->filelen;
2184 mdata->filelen += dsym->nindirectsyms * 4;
2185
2186 dsym->indirect_syms = bfd_zalloc (abfd, dsym->nindirectsyms * 4);
2187 if (dsym->indirect_syms == NULL)
2188 return FALSE;
2189
2190 n = 0;
2191 for (i = 0; i < mdata->nsects; ++i)
2192 {
2193 bfd_mach_o_section *sec = mdata->sections[i];
2194
2195 switch (sec->flags & BFD_MACH_O_SECTION_TYPE_MASK)
2196 {
2197 case BFD_MACH_O_S_NON_LAZY_SYMBOL_POINTERS:
2198 case BFD_MACH_O_S_LAZY_SYMBOL_POINTERS:
2199 case BFD_MACH_O_S_SYMBOL_STUBS:
2200 {
2201 unsigned j, num;
2202 bfd_mach_o_asymbol **isyms = sec->indirect_syms;
2203
2204 num = bfd_mach_o_section_get_nbr_indirect (abfd, sec);
2205 if (isyms == NULL || num == 0)
2206 break;
2207 /* Record the starting index in the reserved1 field. */
2208 sec->reserved1 = n;
2209 for (j = 0; j < num; j++, n++)
2210 {
2211 if (isyms[j] == NULL)
2212 dsym->indirect_syms[n] = BFD_MACH_O_INDIRECT_SYM_LOCAL;
2213 else
2214 dsym->indirect_syms[n] = isyms[j]->symbol.udata.i;
2215 }
2216 }
2217 break;
2218 default:
2219 break;
2220 }
2221 }
2222 }
2223
2224 return TRUE;
2225 }
2226
2227 /* Build Mach-O load commands (currently assuming an MH_OBJECT file).
2228 TODO: Other file formats, rebuilding symtab/dysymtab commands for strip
2229 and copy functionality. */
2230
2231 bfd_boolean
2232 bfd_mach_o_build_commands (bfd *abfd)
2233 {
2234 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
2235 unsigned wide = mach_o_wide_p (&mdata->header);
2236 int segcmd_idx = -1;
2237 int symtab_idx = -1;
2238 int dysymtab_idx = -1;
2239 unsigned long base_offset = 0;
2240
2241 /* Return now if commands are already present. */
2242 if (mdata->header.ncmds)
2243 return FALSE;
2244
2245 /* Fill in the file type, if not already set. */
2246
2247 if (mdata->header.filetype == 0)
2248 {
2249 if (abfd->flags & EXEC_P)
2250 mdata->header.filetype = BFD_MACH_O_MH_EXECUTE;
2251 else if (abfd->flags & DYNAMIC)
2252 mdata->header.filetype = BFD_MACH_O_MH_DYLIB;
2253 else
2254 mdata->header.filetype = BFD_MACH_O_MH_OBJECT;
2255 }
2256
2257 /* If hasn't already been done, flatten sections list, and sort
2258 if/when required. Must be done before the symbol table is adjusted,
2259 since that depends on properly numbered sections. */
2260 if (mdata->nsects == 0 || mdata->sections == NULL)
2261 if (! bfd_mach_o_mangle_sections (abfd, mdata))
2262 return FALSE;
2263
2264 /* Order the symbol table, fill-in/check mach-o specific fields and
2265 partition out any indirect symbols. */
2266 if (!bfd_mach_o_mangle_symbols (abfd))
2267 return FALSE;
2268
2269 /* Very simple command set (only really applicable to MH_OBJECTs):
2270 All the commands are optional - present only when there is suitable data.
2271 (i.e. it is valid to have an empty file)
2272
2273 a command (segment) to contain all the sections,
2274 command for the symbol table,
2275 a command for the dysymtab.
2276
2277 ??? maybe we should assert that this is an MH_OBJECT? */
2278
2279 if (mdata->nsects > 0)
2280 {
2281 segcmd_idx = 0;
2282 mdata->header.ncmds = 1;
2283 }
2284
2285 if (bfd_get_symcount (abfd) > 0)
2286 {
2287 mdata->header.ncmds++;
2288 symtab_idx = segcmd_idx + 1; /* 0 if the seg command is absent. */
2289 }
2290
2291 /* FIXME:
2292 This is a rather crude test for whether we should build a dysymtab. */
2293 if (bfd_mach_o_should_emit_dysymtab ()
2294 && bfd_get_symcount (abfd))
2295 {
2296 mdata->header.ncmds++;
2297 /* If there should be a case where a dysymtab could be emitted without
2298 a symtab (seems improbable), this would need amending. */
2299 dysymtab_idx = symtab_idx + 1;
2300 }
2301
2302 if (wide)
2303 base_offset = BFD_MACH_O_HEADER_64_SIZE;
2304 else
2305 base_offset = BFD_MACH_O_HEADER_SIZE;
2306
2307 /* Well, we must have a header, at least. */
2308 mdata->filelen = base_offset;
2309
2310 /* A bit unusual, but no content is valid;
2311 as -n empty.s -o empty.o */
2312 if (mdata->header.ncmds == 0)
2313 return TRUE;
2314
2315 mdata->commands = bfd_zalloc (abfd, mdata->header.ncmds
2316 * sizeof (bfd_mach_o_load_command));
2317 if (mdata->commands == NULL)
2318 return FALSE;
2319
2320 if (segcmd_idx >= 0)
2321 {
2322 bfd_mach_o_load_command *cmd = &mdata->commands[segcmd_idx];
2323 bfd_mach_o_segment_command *seg = &cmd->command.segment;
2324
2325 /* Count the segctions in the special blank segment used for MH_OBJECT. */
2326 seg->nsects = bfd_mach_o_count_sections_for_seg (NULL, mdata);
2327 if (seg->nsects == (unsigned long) -1)
2328 return FALSE;
2329
2330 /* Init segment command. */
2331 cmd->offset = base_offset;
2332 if (wide)
2333 {
2334 cmd->type = BFD_MACH_O_LC_SEGMENT_64;
2335 cmd->len = BFD_MACH_O_LC_SEGMENT_64_SIZE
2336 + BFD_MACH_O_SECTION_64_SIZE * seg->nsects;
2337 }
2338 else
2339 {
2340 cmd->type = BFD_MACH_O_LC_SEGMENT;
2341 cmd->len = BFD_MACH_O_LC_SEGMENT_SIZE
2342 + BFD_MACH_O_SECTION_SIZE * seg->nsects;
2343 }
2344
2345 cmd->type_required = FALSE;
2346 mdata->header.sizeofcmds = cmd->len;
2347 mdata->filelen += cmd->len;
2348 }
2349
2350 if (symtab_idx >= 0)
2351 {
2352 /* Init symtab command. */
2353 bfd_mach_o_load_command *cmd = &mdata->commands[symtab_idx];
2354
2355 cmd->type = BFD_MACH_O_LC_SYMTAB;
2356 cmd->offset = base_offset;
2357 if (segcmd_idx >= 0)
2358 cmd->offset += mdata->commands[segcmd_idx].len;
2359
2360 cmd->len = sizeof (struct mach_o_symtab_command_external)
2361 + BFD_MACH_O_LC_SIZE;
2362 cmd->type_required = FALSE;
2363 mdata->header.sizeofcmds += cmd->len;
2364 mdata->filelen += cmd->len;
2365 }
2366
2367 /* If required, setup symtab command, see comment above about the quality
2368 of this test. */
2369 if (dysymtab_idx >= 0)
2370 {
2371 bfd_mach_o_load_command *cmd = &mdata->commands[dysymtab_idx];
2372
2373 cmd->type = BFD_MACH_O_LC_DYSYMTAB;
2374 if (symtab_idx >= 0)
2375 cmd->offset = mdata->commands[symtab_idx].offset
2376 + mdata->commands[symtab_idx].len;
2377 else if (segcmd_idx >= 0)
2378 cmd->offset = mdata->commands[segcmd_idx].offset
2379 + mdata->commands[segcmd_idx].len;
2380 else
2381 cmd->offset = base_offset;
2382
2383 cmd->type_required = FALSE;
2384 cmd->len = sizeof (struct mach_o_dysymtab_command_external)
2385 + BFD_MACH_O_LC_SIZE;
2386
2387 mdata->header.sizeofcmds += cmd->len;
2388 mdata->filelen += cmd->len;
2389 }
2390
2391 /* So, now we have sized the commands and the filelen set to that.
2392 Now we can build the segment command and set the section file offsets. */
2393 if (segcmd_idx >= 0
2394 && ! bfd_mach_o_build_seg_command
2395 (NULL, mdata, &mdata->commands[segcmd_idx].command.segment))
2396 return FALSE;
2397
2398 /* If we're doing a dysymtab, cmd points to its load command. */
2399 if (dysymtab_idx >= 0
2400 && ! bfd_mach_o_build_dysymtab_command (abfd, mdata,
2401 &mdata->commands[dysymtab_idx]))
2402 return FALSE;
2403
2404 /* The symtab command is filled in when the symtab is written. */
2405 return TRUE;
2406 }
2407
2408 /* Set the contents of a section. */
2409
2410 bfd_boolean
2411 bfd_mach_o_set_section_contents (bfd *abfd,
2412 asection *section,
2413 const void * location,
2414 file_ptr offset,
2415 bfd_size_type count)
2416 {
2417 file_ptr pos;
2418
2419 /* Trying to write the first section contents will trigger the creation of
2420 the load commands if they are not already present. */
2421 if (! abfd->output_has_begun && ! bfd_mach_o_build_commands (abfd))
2422 return FALSE;
2423
2424 if (count == 0)
2425 return TRUE;
2426
2427 pos = section->filepos + offset;
2428 if (bfd_seek (abfd, pos, SEEK_SET) != 0
2429 || bfd_bwrite (location, count, abfd) != count)
2430 return FALSE;
2431
2432 return TRUE;
2433 }
2434
2435 int
2436 bfd_mach_o_sizeof_headers (bfd *a ATTRIBUTE_UNUSED,
2437 struct bfd_link_info *info ATTRIBUTE_UNUSED)
2438 {
2439 return 0;
2440 }
2441
2442 /* Make an empty symbol. This is required only because
2443 bfd_make_section_anyway wants to create a symbol for the section. */
2444
2445 asymbol *
2446 bfd_mach_o_make_empty_symbol (bfd *abfd)
2447 {
2448 asymbol *new_symbol;
2449
2450 new_symbol = bfd_zalloc (abfd, sizeof (bfd_mach_o_asymbol));
2451 if (new_symbol == NULL)
2452 return new_symbol;
2453 new_symbol->the_bfd = abfd;
2454 new_symbol->udata.i = SYM_MACHO_FIELDS_UNSET;
2455 return new_symbol;
2456 }
2457
2458 static bfd_boolean
2459 bfd_mach_o_read_header (bfd *abfd, bfd_mach_o_header *header)
2460 {
2461 struct mach_o_header_external raw;
2462 unsigned int size;
2463 bfd_vma (*get32) (const void *) = NULL;
2464
2465 /* Just read the magic number. */
2466 if (bfd_seek (abfd, 0, SEEK_SET) != 0
2467 || bfd_bread (raw.magic, sizeof (raw.magic), abfd) != 4)
2468 return FALSE;
2469
2470 if (bfd_getb32 (raw.magic) == BFD_MACH_O_MH_MAGIC)
2471 {
2472 header->byteorder = BFD_ENDIAN_BIG;
2473 header->magic = BFD_MACH_O_MH_MAGIC;
2474 header->version = 1;
2475 get32 = bfd_getb32;
2476 }
2477 else if (bfd_getl32 (raw.magic) == BFD_MACH_O_MH_MAGIC)
2478 {
2479 header->byteorder = BFD_ENDIAN_LITTLE;
2480 header->magic = BFD_MACH_O_MH_MAGIC;
2481 header->version = 1;
2482 get32 = bfd_getl32;
2483 }
2484 else if (bfd_getb32 (raw.magic) == BFD_MACH_O_MH_MAGIC_64)
2485 {
2486 header->byteorder = BFD_ENDIAN_BIG;
2487 header->magic = BFD_MACH_O_MH_MAGIC_64;
2488 header->version = 2;
2489 get32 = bfd_getb32;
2490 }
2491 else if (bfd_getl32 (raw.magic) == BFD_MACH_O_MH_MAGIC_64)
2492 {
2493 header->byteorder = BFD_ENDIAN_LITTLE;
2494 header->magic = BFD_MACH_O_MH_MAGIC_64;
2495 header->version = 2;
2496 get32 = bfd_getl32;
2497 }
2498 else
2499 {
2500 header->byteorder = BFD_ENDIAN_UNKNOWN;
2501 return FALSE;
2502 }
2503
2504 /* Once the size of the header is known, read the full header. */
2505 size = mach_o_wide_p (header) ?
2506 BFD_MACH_O_HEADER_64_SIZE : BFD_MACH_O_HEADER_SIZE;
2507
2508 if (bfd_seek (abfd, 0, SEEK_SET) != 0
2509 || bfd_bread (&raw, size, abfd) != size)
2510 return FALSE;
2511
2512 header->cputype = (*get32) (raw.cputype);
2513 header->cpusubtype = (*get32) (raw.cpusubtype);
2514 header->filetype = (*get32) (raw.filetype);
2515 header->ncmds = (*get32) (raw.ncmds);
2516 header->sizeofcmds = (*get32) (raw.sizeofcmds);
2517 header->flags = (*get32) (raw.flags);
2518
2519 if (mach_o_wide_p (header))
2520 header->reserved = (*get32) (raw.reserved);
2521
2522 return TRUE;
2523 }
2524
2525 bfd_boolean
2526 bfd_mach_o_new_section_hook (bfd *abfd, asection *sec)
2527 {
2528 bfd_mach_o_section *s;
2529 unsigned bfdalign = bfd_get_section_alignment (abfd, sec);
2530
2531 s = bfd_mach_o_get_mach_o_section (sec);
2532 if (s == NULL)
2533 {
2534 flagword bfd_flags;
2535 static const mach_o_section_name_xlat * xlat;
2536
2537 s = (bfd_mach_o_section *) bfd_zalloc (abfd, sizeof (*s));
2538 if (s == NULL)
2539 return FALSE;
2540 sec->used_by_bfd = s;
2541 s->bfdsection = sec;
2542
2543 /* Create the Darwin seg/sect name pair from the bfd name.
2544 If this is a canonical name for which a specific paiting exists
2545 there will also be defined flags, type, attribute and alignment
2546 values. */
2547 xlat = bfd_mach_o_convert_section_name_to_mach_o (abfd, sec, s);
2548 if (xlat != NULL)
2549 {
2550 s->flags = xlat->macho_sectype | xlat->macho_secattr;
2551 s->align = xlat->sectalign > bfdalign ? xlat->sectalign
2552 : bfdalign;
2553 bfd_set_section_alignment (abfd, sec, s->align);
2554 bfd_flags = bfd_get_section_flags (abfd, sec);
2555 if (bfd_flags == SEC_NO_FLAGS)
2556 bfd_set_section_flags (abfd, sec, xlat->bfd_flags);
2557 }
2558 else
2559 /* Create default flags. */
2560 bfd_mach_o_set_section_flags_from_bfd (abfd, sec);
2561 }
2562
2563 return _bfd_generic_new_section_hook (abfd, sec);
2564 }
2565
2566 static void
2567 bfd_mach_o_init_section_from_mach_o (bfd *abfd, asection *sec,
2568 unsigned long prot)
2569 {
2570 flagword flags;
2571 bfd_mach_o_section *section;
2572
2573 flags = bfd_get_section_flags (abfd, sec);
2574 section = bfd_mach_o_get_mach_o_section (sec);
2575
2576 /* TODO: see if we should use the xlat system for doing this by
2577 preference and fall back to this for unknown sections. */
2578
2579 if (flags == SEC_NO_FLAGS)
2580 {
2581 /* Try to guess flags. */
2582 if (section->flags & BFD_MACH_O_S_ATTR_DEBUG)
2583 flags = SEC_DEBUGGING;
2584 else
2585 {
2586 flags = SEC_ALLOC;
2587 if ((section->flags & BFD_MACH_O_SECTION_TYPE_MASK)
2588 != BFD_MACH_O_S_ZEROFILL)
2589 {
2590 flags |= SEC_LOAD;
2591 if (prot & BFD_MACH_O_PROT_EXECUTE)
2592 flags |= SEC_CODE;
2593 if (prot & BFD_MACH_O_PROT_WRITE)
2594 flags |= SEC_DATA;
2595 else if (prot & BFD_MACH_O_PROT_READ)
2596 flags |= SEC_READONLY;
2597 }
2598 }
2599 }
2600 else
2601 {
2602 if ((flags & SEC_DEBUGGING) == 0)
2603 flags |= SEC_ALLOC;
2604 }
2605
2606 if (section->offset != 0)
2607 flags |= SEC_HAS_CONTENTS;
2608 if (section->nreloc != 0)
2609 flags |= SEC_RELOC;
2610
2611 bfd_set_section_flags (abfd, sec, flags);
2612
2613 sec->vma = section->addr;
2614 sec->lma = section->addr;
2615 sec->size = section->size;
2616 sec->filepos = section->offset;
2617 sec->alignment_power = section->align;
2618 sec->segment_mark = 0;
2619 sec->reloc_count = section->nreloc;
2620 sec->rel_filepos = section->reloff;
2621 }
2622
2623 static asection *
2624 bfd_mach_o_make_bfd_section (bfd *abfd,
2625 const unsigned char *segname,
2626 const unsigned char *sectname)
2627 {
2628 const char *sname;
2629 flagword flags;
2630
2631 bfd_mach_o_convert_section_name_to_bfd
2632 (abfd, (const char *)segname, (const char *)sectname, &sname, &flags);
2633 if (sname == NULL)
2634 return NULL;
2635
2636 return bfd_make_section_anyway_with_flags (abfd, sname, flags);
2637 }
2638
2639 static asection *
2640 bfd_mach_o_read_section_32 (bfd *abfd,
2641 unsigned int offset,
2642 unsigned long prot)
2643 {
2644 struct mach_o_section_32_external raw;
2645 asection *sec;
2646 bfd_mach_o_section *section;
2647
2648 if (bfd_seek (abfd, offset, SEEK_SET) != 0
2649 || (bfd_bread (&raw, BFD_MACH_O_SECTION_SIZE, abfd)
2650 != BFD_MACH_O_SECTION_SIZE))
2651 return NULL;
2652
2653 sec = bfd_mach_o_make_bfd_section (abfd, raw.segname, raw.sectname);
2654 if (sec == NULL)
2655 return NULL;
2656
2657 section = bfd_mach_o_get_mach_o_section (sec);
2658 memcpy (section->segname, raw.segname, sizeof (raw.segname));
2659 section->segname[BFD_MACH_O_SEGNAME_SIZE] = 0;
2660 memcpy (section->sectname, raw.sectname, sizeof (raw.sectname));
2661 section->sectname[BFD_MACH_O_SECTNAME_SIZE] = 0;
2662 section->addr = bfd_h_get_32 (abfd, raw.addr);
2663 section->size = bfd_h_get_32 (abfd, raw.size);
2664 section->offset = bfd_h_get_32 (abfd, raw.offset);
2665 section->align = bfd_h_get_32 (abfd, raw.align);
2666 section->reloff = bfd_h_get_32 (abfd, raw.reloff);
2667 section->nreloc = bfd_h_get_32 (abfd, raw.nreloc);
2668 section->flags = bfd_h_get_32 (abfd, raw.flags);
2669 section->reserved1 = bfd_h_get_32 (abfd, raw.reserved1);
2670 section->reserved2 = bfd_h_get_32 (abfd, raw.reserved2);
2671 section->reserved3 = 0;
2672
2673 bfd_mach_o_init_section_from_mach_o (abfd, sec, prot);
2674
2675 return sec;
2676 }
2677
2678 static asection *
2679 bfd_mach_o_read_section_64 (bfd *abfd,
2680 unsigned int offset,
2681 unsigned long prot)
2682 {
2683 struct mach_o_section_64_external raw;
2684 asection *sec;
2685 bfd_mach_o_section *section;
2686
2687 if (bfd_seek (abfd, offset, SEEK_SET) != 0
2688 || (bfd_bread (&raw, BFD_MACH_O_SECTION_64_SIZE, abfd)
2689 != BFD_MACH_O_SECTION_64_SIZE))
2690 return NULL;
2691
2692 sec = bfd_mach_o_make_bfd_section (abfd, raw.segname, raw.sectname);
2693 if (sec == NULL)
2694 return NULL;
2695
2696 section = bfd_mach_o_get_mach_o_section (sec);
2697 memcpy (section->segname, raw.segname, sizeof (raw.segname));
2698 section->segname[BFD_MACH_O_SEGNAME_SIZE] = 0;
2699 memcpy (section->sectname, raw.sectname, sizeof (raw.sectname));
2700 section->sectname[BFD_MACH_O_SECTNAME_SIZE] = 0;
2701 section->addr = bfd_h_get_64 (abfd, raw.addr);
2702 section->size = bfd_h_get_64 (abfd, raw.size);
2703 section->offset = bfd_h_get_32 (abfd, raw.offset);
2704 section->align = bfd_h_get_32 (abfd, raw.align);
2705 section->reloff = bfd_h_get_32 (abfd, raw.reloff);
2706 section->nreloc = bfd_h_get_32 (abfd, raw.nreloc);
2707 section->flags = bfd_h_get_32 (abfd, raw.flags);
2708 section->reserved1 = bfd_h_get_32 (abfd, raw.reserved1);
2709 section->reserved2 = bfd_h_get_32 (abfd, raw.reserved2);
2710 section->reserved3 = bfd_h_get_32 (abfd, raw.reserved3);
2711
2712 bfd_mach_o_init_section_from_mach_o (abfd, sec, prot);
2713
2714 return sec;
2715 }
2716
2717 static asection *
2718 bfd_mach_o_read_section (bfd *abfd,
2719 unsigned int offset,
2720 unsigned long prot,
2721 unsigned int wide)
2722 {
2723 if (wide)
2724 return bfd_mach_o_read_section_64 (abfd, offset, prot);
2725 else
2726 return bfd_mach_o_read_section_32 (abfd, offset, prot);
2727 }
2728
2729 static bfd_boolean
2730 bfd_mach_o_read_symtab_symbol (bfd *abfd,
2731 bfd_mach_o_symtab_command *sym,
2732 bfd_mach_o_asymbol *s,
2733 unsigned long i)
2734 {
2735 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
2736 unsigned int wide = mach_o_wide_p (&mdata->header);
2737 unsigned int symwidth =
2738 wide ? BFD_MACH_O_NLIST_64_SIZE : BFD_MACH_O_NLIST_SIZE;
2739 unsigned int symoff = sym->symoff + (i * symwidth);
2740 struct mach_o_nlist_64_external raw;
2741 unsigned char type = -1;
2742 unsigned char section = -1;
2743 short desc = -1;
2744 symvalue value = -1;
2745 unsigned long stroff = -1;
2746 unsigned int symtype = -1;
2747
2748 BFD_ASSERT (sym->strtab != NULL);
2749
2750 if (bfd_seek (abfd, symoff, SEEK_SET) != 0
2751 || bfd_bread (&raw, symwidth, abfd) != symwidth)
2752 {
2753 (*_bfd_error_handler)
2754 (_("bfd_mach_o_read_symtab_symbol: unable to read %d bytes at %lu"),
2755 symwidth, (unsigned long) symoff);
2756 return FALSE;
2757 }
2758
2759 stroff = bfd_h_get_32 (abfd, raw.n_strx);
2760 type = bfd_h_get_8 (abfd, raw.n_type);
2761 symtype = type & BFD_MACH_O_N_TYPE;
2762 section = bfd_h_get_8 (abfd, raw.n_sect);
2763 desc = bfd_h_get_16 (abfd, raw.n_desc);
2764 if (wide)
2765 value = bfd_h_get_64 (abfd, raw.n_value);
2766 else
2767 value = bfd_h_get_32 (abfd, raw.n_value);
2768
2769 if (stroff >= sym->strsize)
2770 {
2771 (*_bfd_error_handler)
2772 (_("bfd_mach_o_read_symtab_symbol: name out of range (%lu >= %lu)"),
2773 (unsigned long) stroff,
2774 (unsigned long) sym->strsize);
2775 return FALSE;
2776 }
2777
2778 s->symbol.the_bfd = abfd;
2779 s->symbol.name = sym->strtab + stroff;
2780 s->symbol.value = value;
2781 s->symbol.flags = 0x0;
2782 s->symbol.udata.i = i;
2783 s->n_type = type;
2784 s->n_sect = section;
2785 s->n_desc = desc;
2786
2787 if (type & BFD_MACH_O_N_STAB)
2788 {
2789 s->symbol.flags |= BSF_DEBUGGING;
2790 s->symbol.section = bfd_und_section_ptr;
2791 switch (type)
2792 {
2793 case N_FUN:
2794 case N_STSYM:
2795 case N_LCSYM:
2796 case N_BNSYM:
2797 case N_SLINE:
2798 case N_ENSYM:
2799 case N_ECOMM:
2800 case N_ECOML:
2801 case N_GSYM:
2802 if ((section > 0) && (section <= mdata->nsects))
2803 {
2804 s->symbol.section = mdata->sections[section - 1]->bfdsection;
2805 s->symbol.value =
2806 s->symbol.value - mdata->sections[section - 1]->addr;
2807 }
2808 break;
2809 }
2810 }
2811 else
2812 {
2813 if (type & (BFD_MACH_O_N_PEXT | BFD_MACH_O_N_EXT))
2814 s->symbol.flags |= BSF_GLOBAL;
2815 else
2816 s->symbol.flags |= BSF_LOCAL;
2817
2818 switch (symtype)
2819 {
2820 case BFD_MACH_O_N_UNDF:
2821 if (type == (BFD_MACH_O_N_UNDF | BFD_MACH_O_N_EXT)
2822 && s->symbol.value != 0)
2823 {
2824 /* A common symbol. */
2825 s->symbol.section = bfd_com_section_ptr;
2826 s->symbol.flags = BSF_NO_FLAGS;
2827 }
2828 else
2829 {
2830 s->symbol.section = bfd_und_section_ptr;
2831 if (s->n_desc & BFD_MACH_O_N_WEAK_REF)
2832 s->symbol.flags |= BSF_WEAK;
2833 }
2834 break;
2835 case BFD_MACH_O_N_PBUD:
2836 s->symbol.section = bfd_und_section_ptr;
2837 break;
2838 case BFD_MACH_O_N_ABS:
2839 s->symbol.section = bfd_abs_section_ptr;
2840 break;
2841 case BFD_MACH_O_N_SECT:
2842 if ((section > 0) && (section <= mdata->nsects))
2843 {
2844 s->symbol.section = mdata->sections[section - 1]->bfdsection;
2845 s->symbol.value =
2846 s->symbol.value - mdata->sections[section - 1]->addr;
2847 }
2848 else
2849 {
2850 /* Mach-O uses 0 to mean "no section"; not an error. */
2851 if (section != 0)
2852 {
2853 (*_bfd_error_handler) (_("bfd_mach_o_read_symtab_symbol: "
2854 "symbol \"%s\" specified invalid section %d (max %lu): setting to undefined"),
2855 s->symbol.name, section, mdata->nsects);
2856 }
2857 s->symbol.section = bfd_und_section_ptr;
2858 }
2859 break;
2860 case BFD_MACH_O_N_INDR:
2861 /* FIXME: we don't follow the BFD convention as this indirect symbol
2862 won't be followed by the referenced one. This looks harmless
2863 unless we start using the linker. */
2864 s->symbol.flags |= BSF_INDIRECT;
2865 s->symbol.section = bfd_ind_section_ptr;
2866 s->symbol.value = 0;
2867 break;
2868 default:
2869 (*_bfd_error_handler) (_("bfd_mach_o_read_symtab_symbol: "
2870 "symbol \"%s\" specified invalid type field 0x%x: setting to undefined"),
2871 s->symbol.name, symtype);
2872 s->symbol.section = bfd_und_section_ptr;
2873 break;
2874 }
2875 }
2876
2877 return TRUE;
2878 }
2879
2880 bfd_boolean
2881 bfd_mach_o_read_symtab_strtab (bfd *abfd)
2882 {
2883 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
2884 bfd_mach_o_symtab_command *sym = mdata->symtab;
2885
2886 /* Fail if there is no symtab. */
2887 if (sym == NULL)
2888 return FALSE;
2889
2890 /* Success if already loaded. */
2891 if (sym->strtab)
2892 return TRUE;
2893
2894 if (abfd->flags & BFD_IN_MEMORY)
2895 {
2896 struct bfd_in_memory *b;
2897
2898 b = (struct bfd_in_memory *) abfd->iostream;
2899
2900 if ((sym->stroff + sym->strsize) > b->size)
2901 {
2902 bfd_set_error (bfd_error_file_truncated);
2903 return FALSE;
2904 }
2905 sym->strtab = (char *) b->buffer + sym->stroff;
2906 }
2907 else
2908 {
2909 sym->strtab = bfd_alloc (abfd, sym->strsize);
2910 if (sym->strtab == NULL)
2911 return FALSE;
2912
2913 if (bfd_seek (abfd, sym->stroff, SEEK_SET) != 0
2914 || bfd_bread (sym->strtab, sym->strsize, abfd) != sym->strsize)
2915 {
2916 bfd_set_error (bfd_error_file_truncated);
2917 return FALSE;
2918 }
2919 }
2920
2921 return TRUE;
2922 }
2923
2924 bfd_boolean
2925 bfd_mach_o_read_symtab_symbols (bfd *abfd)
2926 {
2927 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
2928 bfd_mach_o_symtab_command *sym = mdata->symtab;
2929 unsigned long i;
2930
2931 if (sym == NULL || sym->symbols)
2932 {
2933 /* Return now if there are no symbols or if already loaded. */
2934 return TRUE;
2935 }
2936
2937 sym->symbols = bfd_alloc (abfd, sym->nsyms * sizeof (bfd_mach_o_asymbol));
2938
2939 if (sym->symbols == NULL)
2940 {
2941 (*_bfd_error_handler) (_("bfd_mach_o_read_symtab_symbols: unable to allocate memory for symbols"));
2942 return FALSE;
2943 }
2944
2945 if (!bfd_mach_o_read_symtab_strtab (abfd))
2946 return FALSE;
2947
2948 for (i = 0; i < sym->nsyms; i++)
2949 {
2950 if (!bfd_mach_o_read_symtab_symbol (abfd, sym, &sym->symbols[i], i))
2951 return FALSE;
2952 }
2953
2954 return TRUE;
2955 }
2956
2957 static const char *
2958 bfd_mach_o_i386_flavour_string (unsigned int flavour)
2959 {
2960 switch ((int) flavour)
2961 {
2962 case BFD_MACH_O_x86_THREAD_STATE32: return "x86_THREAD_STATE32";
2963 case BFD_MACH_O_x86_FLOAT_STATE32: return "x86_FLOAT_STATE32";
2964 case BFD_MACH_O_x86_EXCEPTION_STATE32: return "x86_EXCEPTION_STATE32";
2965 case BFD_MACH_O_x86_THREAD_STATE64: return "x86_THREAD_STATE64";
2966 case BFD_MACH_O_x86_FLOAT_STATE64: return "x86_FLOAT_STATE64";
2967 case BFD_MACH_O_x86_EXCEPTION_STATE64: return "x86_EXCEPTION_STATE64";
2968 case BFD_MACH_O_x86_THREAD_STATE: return "x86_THREAD_STATE";
2969 case BFD_MACH_O_x86_FLOAT_STATE: return "x86_FLOAT_STATE";
2970 case BFD_MACH_O_x86_EXCEPTION_STATE: return "x86_EXCEPTION_STATE";
2971 case BFD_MACH_O_x86_DEBUG_STATE32: return "x86_DEBUG_STATE32";
2972 case BFD_MACH_O_x86_DEBUG_STATE64: return "x86_DEBUG_STATE64";
2973 case BFD_MACH_O_x86_DEBUG_STATE: return "x86_DEBUG_STATE";
2974 case BFD_MACH_O_x86_THREAD_STATE_NONE: return "x86_THREAD_STATE_NONE";
2975 default: return "UNKNOWN";
2976 }
2977 }
2978
2979 static const char *
2980 bfd_mach_o_ppc_flavour_string (unsigned int flavour)
2981 {
2982 switch ((int) flavour)
2983 {
2984 case BFD_MACH_O_PPC_THREAD_STATE: return "PPC_THREAD_STATE";
2985 case BFD_MACH_O_PPC_FLOAT_STATE: return "PPC_FLOAT_STATE";
2986 case BFD_MACH_O_PPC_EXCEPTION_STATE: return "PPC_EXCEPTION_STATE";
2987 case BFD_MACH_O_PPC_VECTOR_STATE: return "PPC_VECTOR_STATE";
2988 case BFD_MACH_O_PPC_THREAD_STATE64: return "PPC_THREAD_STATE64";
2989 case BFD_MACH_O_PPC_EXCEPTION_STATE64: return "PPC_EXCEPTION_STATE64";
2990 default: return "UNKNOWN";
2991 }
2992 }
2993
2994 static int
2995 bfd_mach_o_read_dylinker (bfd *abfd, bfd_mach_o_load_command *command)
2996 {
2997 bfd_mach_o_dylinker_command *cmd = &command->command.dylinker;
2998 struct mach_o_str_command_external raw;
2999 unsigned int nameoff;
3000
3001 BFD_ASSERT ((command->type == BFD_MACH_O_LC_ID_DYLINKER)
3002 || (command->type == BFD_MACH_O_LC_LOAD_DYLINKER));
3003
3004 if (bfd_seek (abfd, command->offset + BFD_MACH_O_LC_SIZE, SEEK_SET) != 0
3005 || bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
3006 return -1;
3007
3008 nameoff = bfd_h_get_32 (abfd, raw.str);
3009
3010 cmd->name_offset = command->offset + nameoff;
3011 cmd->name_len = command->len - nameoff;
3012 cmd->name_str = bfd_alloc (abfd, cmd->name_len);
3013 if (cmd->name_str == NULL)
3014 return -1;
3015 if (bfd_seek (abfd, cmd->name_offset, SEEK_SET) != 0
3016 || bfd_bread (cmd->name_str, cmd->name_len, abfd) != cmd->name_len)
3017 return -1;
3018 return 0;
3019 }
3020
3021 static int
3022 bfd_mach_o_read_dylib (bfd *abfd, bfd_mach_o_load_command *command)
3023 {
3024 bfd_mach_o_dylib_command *cmd = &command->command.dylib;
3025 struct mach_o_dylib_command_external raw;
3026 unsigned int nameoff;
3027
3028 switch (command->type)
3029 {
3030 case BFD_MACH_O_LC_LOAD_DYLIB:
3031 case BFD_MACH_O_LC_LOAD_WEAK_DYLIB:
3032 case BFD_MACH_O_LC_ID_DYLIB:
3033 case BFD_MACH_O_LC_REEXPORT_DYLIB:
3034 case BFD_MACH_O_LC_LOAD_UPWARD_DYLIB:
3035 break;
3036 default:
3037 BFD_FAIL ();
3038 return -1;
3039 }
3040
3041 if (bfd_seek (abfd, command->offset + BFD_MACH_O_LC_SIZE, SEEK_SET) != 0
3042 || bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
3043 return -1;
3044
3045 nameoff = bfd_h_get_32 (abfd, raw.name);
3046 cmd->timestamp = bfd_h_get_32 (abfd, raw.timestamp);
3047 cmd->current_version = bfd_h_get_32 (abfd, raw.current_version);
3048 cmd->compatibility_version = bfd_h_get_32 (abfd, raw.compatibility_version);
3049
3050 cmd->name_offset = command->offset + nameoff;
3051 cmd->name_len = command->len - nameoff;
3052 cmd->name_str = bfd_alloc (abfd, cmd->name_len);
3053 if (cmd->name_str == NULL)
3054 return -1;
3055 if (bfd_seek (abfd, cmd->name_offset, SEEK_SET) != 0
3056 || bfd_bread (cmd->name_str, cmd->name_len, abfd) != cmd->name_len)
3057 return -1;
3058 return 0;
3059 }
3060
3061 static int
3062 bfd_mach_o_read_prebound_dylib (bfd *abfd ATTRIBUTE_UNUSED,
3063 bfd_mach_o_load_command *command ATTRIBUTE_UNUSED)
3064 {
3065 /* bfd_mach_o_prebound_dylib_command *cmd = &command->command.prebound_dylib; */
3066
3067 BFD_ASSERT (command->type == BFD_MACH_O_LC_PREBOUND_DYLIB);
3068 return 0;
3069 }
3070
3071 static int
3072 bfd_mach_o_read_fvmlib (bfd *abfd, bfd_mach_o_load_command *command)
3073 {
3074 bfd_mach_o_fvmlib_command *fvm = &command->command.fvmlib;
3075 struct mach_o_fvmlib_command_external raw;
3076 unsigned int nameoff;
3077
3078 if (bfd_seek (abfd, command->offset + BFD_MACH_O_LC_SIZE, SEEK_SET) != 0
3079 || bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
3080 return -1;
3081
3082 nameoff = bfd_h_get_32 (abfd, raw.name);
3083 fvm->minor_version = bfd_h_get_32 (abfd, raw.minor_version);
3084 fvm->header_addr = bfd_h_get_32 (abfd, raw.header_addr);
3085
3086 fvm->name_offset = command->offset + nameoff;
3087 fvm->name_len = command->len - nameoff;
3088 fvm->name_str = bfd_alloc (abfd, fvm->name_len);
3089 if (fvm->name_str == NULL)
3090 return -1;
3091 if (bfd_seek (abfd, fvm->name_offset, SEEK_SET) != 0
3092 || bfd_bread (fvm->name_str, fvm->name_len, abfd) != fvm->name_len)
3093 return -1;
3094 return 0;
3095 }
3096
3097 static int
3098 bfd_mach_o_read_thread (bfd *abfd, bfd_mach_o_load_command *command)
3099 {
3100 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
3101 bfd_mach_o_thread_command *cmd = &command->command.thread;
3102 unsigned int offset;
3103 unsigned int nflavours;
3104 unsigned int i;
3105
3106 BFD_ASSERT ((command->type == BFD_MACH_O_LC_THREAD)
3107 || (command->type == BFD_MACH_O_LC_UNIXTHREAD));
3108
3109 /* Count the number of threads. */
3110 offset = 8;
3111 nflavours = 0;
3112 while (offset != command->len)
3113 {
3114 struct mach_o_thread_command_external raw;
3115
3116 if (offset >= command->len)
3117 return -1;
3118
3119 if (bfd_seek (abfd, command->offset + offset, SEEK_SET) != 0
3120 || bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
3121 return -1;
3122
3123 offset += sizeof (raw) + bfd_h_get_32 (abfd, raw.count) * 4;
3124 nflavours++;
3125 }
3126
3127 /* Allocate threads. */
3128 cmd->flavours = bfd_alloc
3129 (abfd, nflavours * sizeof (bfd_mach_o_thread_flavour));
3130 if (cmd->flavours == NULL)
3131 return -1;
3132 cmd->nflavours = nflavours;
3133
3134 offset = 8;
3135 nflavours = 0;
3136 while (offset != command->len)
3137 {
3138 struct mach_o_thread_command_external raw;
3139
3140 if (offset >= command->len)
3141 return -1;
3142
3143 if (nflavours >= cmd->nflavours)
3144 return -1;
3145
3146 if (bfd_seek (abfd, command->offset + offset, SEEK_SET) != 0
3147 || bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
3148 return -1;
3149
3150 cmd->flavours[nflavours].flavour = bfd_h_get_32 (abfd, raw.flavour);
3151 cmd->flavours[nflavours].offset = command->offset + offset + sizeof (raw);
3152 cmd->flavours[nflavours].size = bfd_h_get_32 (abfd, raw.count) * 4;
3153 offset += cmd->flavours[nflavours].size + sizeof (raw);
3154 nflavours++;
3155 }
3156
3157 for (i = 0; i < nflavours; i++)
3158 {
3159 asection *bfdsec;
3160 unsigned int snamelen;
3161 char *sname;
3162 const char *flavourstr;
3163 const char *prefix = "LC_THREAD";
3164 unsigned int j = 0;
3165
3166 switch (mdata->header.cputype)
3167 {
3168 case BFD_MACH_O_CPU_TYPE_POWERPC:
3169 case BFD_MACH_O_CPU_TYPE_POWERPC_64:
3170 flavourstr = bfd_mach_o_ppc_flavour_string (cmd->flavours[i].flavour);
3171 break;
3172 case BFD_MACH_O_CPU_TYPE_I386:
3173 case BFD_MACH_O_CPU_TYPE_X86_64:
3174 flavourstr = bfd_mach_o_i386_flavour_string (cmd->flavours[i].flavour);
3175 break;
3176 default:
3177 flavourstr = "UNKNOWN_ARCHITECTURE";
3178 break;
3179 }
3180
3181 snamelen = strlen (prefix) + 1 + 20 + 1 + strlen (flavourstr) + 1;
3182 sname = bfd_alloc (abfd, snamelen);
3183 if (sname == NULL)
3184 return -1;
3185
3186 for (;;)
3187 {
3188 sprintf (sname, "%s.%s.%u", prefix, flavourstr, j);
3189 if (bfd_get_section_by_name (abfd, sname) == NULL)
3190 break;
3191 j++;
3192 }
3193
3194 bfdsec = bfd_make_section_with_flags (abfd, sname, SEC_HAS_CONTENTS);
3195
3196 bfdsec->vma = 0;
3197 bfdsec->lma = 0;
3198 bfdsec->size = cmd->flavours[i].size;
3199 bfdsec->filepos = cmd->flavours[i].offset;
3200 bfdsec->alignment_power = 0x0;
3201
3202 cmd->section = bfdsec;
3203 }
3204
3205 return 0;
3206 }
3207
3208 static int
3209 bfd_mach_o_read_dysymtab (bfd *abfd, bfd_mach_o_load_command *command)
3210 {
3211 bfd_mach_o_dysymtab_command *cmd = &command->command.dysymtab;
3212 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
3213
3214 BFD_ASSERT (command->type == BFD_MACH_O_LC_DYSYMTAB);
3215
3216 {
3217 struct mach_o_dysymtab_command_external raw;
3218
3219 if (bfd_seek (abfd, command->offset + BFD_MACH_O_LC_SIZE, SEEK_SET) != 0
3220 || bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
3221 return -1;
3222
3223 cmd->ilocalsym = bfd_h_get_32 (abfd, raw.ilocalsym);
3224 cmd->nlocalsym = bfd_h_get_32 (abfd, raw.nlocalsym);
3225 cmd->iextdefsym = bfd_h_get_32 (abfd, raw.iextdefsym);
3226 cmd->nextdefsym = bfd_h_get_32 (abfd, raw.nextdefsym);
3227 cmd->iundefsym = bfd_h_get_32 (abfd, raw.iundefsym);
3228 cmd->nundefsym = bfd_h_get_32 (abfd, raw.nundefsym);
3229 cmd->tocoff = bfd_h_get_32 (abfd, raw.tocoff);
3230 cmd->ntoc = bfd_h_get_32 (abfd, raw.ntoc);
3231 cmd->modtaboff = bfd_h_get_32 (abfd, raw.modtaboff);
3232 cmd->nmodtab = bfd_h_get_32 (abfd, raw.nmodtab);
3233 cmd->extrefsymoff = bfd_h_get_32 (abfd, raw.extrefsymoff);
3234 cmd->nextrefsyms = bfd_h_get_32 (abfd, raw.nextrefsyms);
3235 cmd->indirectsymoff = bfd_h_get_32 (abfd, raw.indirectsymoff);
3236 cmd->nindirectsyms = bfd_h_get_32 (abfd, raw.nindirectsyms);
3237 cmd->extreloff = bfd_h_get_32 (abfd, raw.extreloff);
3238 cmd->nextrel = bfd_h_get_32 (abfd, raw.nextrel);
3239 cmd->locreloff = bfd_h_get_32 (abfd, raw.locreloff);
3240 cmd->nlocrel = bfd_h_get_32 (abfd, raw.nlocrel);
3241 }
3242
3243 if (cmd->nmodtab != 0)
3244 {
3245 unsigned int i;
3246 int wide = bfd_mach_o_wide_p (abfd);
3247 unsigned int module_len = wide ? 56 : 52;
3248
3249 cmd->dylib_module =
3250 bfd_alloc (abfd, cmd->nmodtab * sizeof (bfd_mach_o_dylib_module));
3251 if (cmd->dylib_module == NULL)
3252 return -1;
3253
3254 if (bfd_seek (abfd, cmd->modtaboff, SEEK_SET) != 0)
3255 return -1;
3256
3257 for (i = 0; i < cmd->nmodtab; i++)
3258 {
3259 bfd_mach_o_dylib_module *module = &cmd->dylib_module[i];
3260 unsigned long v;
3261 unsigned char buf[56];
3262
3263 if (bfd_bread ((void *) buf, module_len, abfd) != module_len)
3264 return -1;
3265
3266 module->module_name_idx = bfd_h_get_32 (abfd, buf + 0);
3267 module->iextdefsym = bfd_h_get_32 (abfd, buf + 4);
3268 module->nextdefsym = bfd_h_get_32 (abfd, buf + 8);
3269 module->irefsym = bfd_h_get_32 (abfd, buf + 12);
3270 module->nrefsym = bfd_h_get_32 (abfd, buf + 16);
3271 module->ilocalsym = bfd_h_get_32 (abfd, buf + 20);
3272 module->nlocalsym = bfd_h_get_32 (abfd, buf + 24);
3273 module->iextrel = bfd_h_get_32 (abfd, buf + 28);
3274 module->nextrel = bfd_h_get_32 (abfd, buf + 32);
3275 v = bfd_h_get_32 (abfd, buf +36);
3276 module->iinit = v & 0xffff;
3277 module->iterm = (v >> 16) & 0xffff;
3278 v = bfd_h_get_32 (abfd, buf + 40);
3279 module->ninit = v & 0xffff;
3280 module->nterm = (v >> 16) & 0xffff;
3281 if (wide)
3282 {
3283 module->objc_module_info_size = bfd_h_get_32 (abfd, buf + 44);
3284 module->objc_module_info_addr = bfd_h_get_64 (abfd, buf + 48);
3285 }
3286 else
3287 {
3288 module->objc_module_info_addr = bfd_h_get_32 (abfd, buf + 44);
3289 module->objc_module_info_size = bfd_h_get_32 (abfd, buf + 48);
3290 }
3291 }
3292 }
3293
3294 if (cmd->ntoc != 0)
3295 {
3296 unsigned int i;
3297
3298 cmd->dylib_toc = bfd_alloc
3299 (abfd, cmd->ntoc * sizeof (bfd_mach_o_dylib_table_of_content));
3300 if (cmd->dylib_toc == NULL)
3301 return -1;
3302
3303 if (bfd_seek (abfd, cmd->tocoff, SEEK_SET) != 0)
3304 return -1;
3305
3306 for (i = 0; i < cmd->ntoc; i++)
3307 {
3308 struct mach_o_dylib_table_of_contents_external raw;
3309 bfd_mach_o_dylib_table_of_content *toc = &cmd->dylib_toc[i];
3310
3311 if (bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
3312 return -1;
3313
3314 toc->symbol_index = bfd_h_get_32 (abfd, raw.symbol_index);
3315 toc->module_index = bfd_h_get_32 (abfd, raw.module_index);
3316 }
3317 }
3318
3319 if (cmd->nindirectsyms != 0)
3320 {
3321 unsigned int i;
3322
3323 cmd->indirect_syms = bfd_alloc
3324 (abfd, cmd->nindirectsyms * sizeof (unsigned int));
3325 if (cmd->indirect_syms == NULL)
3326 return -1;
3327
3328 if (bfd_seek (abfd, cmd->indirectsymoff, SEEK_SET) != 0)
3329 return -1;
3330
3331 for (i = 0; i < cmd->nindirectsyms; i++)
3332 {
3333 unsigned char raw[4];
3334 unsigned int *is = &cmd->indirect_syms[i];
3335
3336 if (bfd_bread (raw, sizeof (raw), abfd) != sizeof (raw))
3337 return -1;
3338
3339 *is = bfd_h_get_32 (abfd, raw);
3340 }
3341 }
3342
3343 if (cmd->nextrefsyms != 0)
3344 {
3345 unsigned long v;
3346 unsigned int i;
3347
3348 cmd->ext_refs = bfd_alloc
3349 (abfd, cmd->nextrefsyms * sizeof (bfd_mach_o_dylib_reference));
3350 if (cmd->ext_refs == NULL)
3351 return -1;
3352
3353 if (bfd_seek (abfd, cmd->extrefsymoff, SEEK_SET) != 0)
3354 return -1;
3355
3356 for (i = 0; i < cmd->nextrefsyms; i++)
3357 {
3358 unsigned char raw[4];
3359 bfd_mach_o_dylib_reference *ref = &cmd->ext_refs[i];
3360
3361 if (bfd_bread (raw, sizeof (raw), abfd) != sizeof (raw))
3362 return -1;
3363
3364 /* Fields isym and flags are written as bit-fields, thus we need
3365 a specific processing for endianness. */
3366 v = bfd_h_get_32 (abfd, raw);
3367 if (bfd_big_endian (abfd))
3368 {
3369 ref->isym = (v >> 8) & 0xffffff;
3370 ref->flags = v & 0xff;
3371 }
3372 else
3373 {
3374 ref->isym = v & 0xffffff;
3375 ref->flags = (v >> 24) & 0xff;
3376 }
3377 }
3378 }
3379
3380 if (mdata->dysymtab)
3381 return -1;
3382 mdata->dysymtab = cmd;
3383
3384 return 0;
3385 }
3386
3387 static int
3388 bfd_mach_o_read_symtab (bfd *abfd, bfd_mach_o_load_command *command)
3389 {
3390 bfd_mach_o_symtab_command *symtab = &command->command.symtab;
3391 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
3392 struct mach_o_symtab_command_external raw;
3393
3394 BFD_ASSERT (command->type == BFD_MACH_O_LC_SYMTAB);
3395
3396 if (bfd_seek (abfd, command->offset + BFD_MACH_O_LC_SIZE, SEEK_SET) != 0
3397 || bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
3398 return -1;
3399
3400 symtab->symoff = bfd_h_get_32 (abfd, raw.symoff);
3401 symtab->nsyms = bfd_h_get_32 (abfd, raw.nsyms);
3402 symtab->stroff = bfd_h_get_32 (abfd, raw.stroff);
3403 symtab->strsize = bfd_h_get_32 (abfd, raw.strsize);
3404 symtab->symbols = NULL;
3405 symtab->strtab = NULL;
3406
3407 if (symtab->nsyms != 0)
3408 abfd->flags |= HAS_SYMS;
3409
3410 if (mdata->symtab)
3411 return -1;
3412 mdata->symtab = symtab;
3413 return 0;
3414 }
3415
3416 static int
3417 bfd_mach_o_read_uuid (bfd *abfd, bfd_mach_o_load_command *command)
3418 {
3419 bfd_mach_o_uuid_command *cmd = &command->command.uuid;
3420
3421 BFD_ASSERT (command->type == BFD_MACH_O_LC_UUID);
3422
3423 if (bfd_seek (abfd, command->offset + BFD_MACH_O_LC_SIZE, SEEK_SET) != 0
3424 || bfd_bread (cmd->uuid, 16, abfd) != 16)
3425 return -1;
3426
3427 return 0;
3428 }
3429
3430 static int
3431 bfd_mach_o_read_linkedit (bfd *abfd, bfd_mach_o_load_command *command)
3432 {
3433 bfd_mach_o_linkedit_command *cmd = &command->command.linkedit;
3434 struct mach_o_linkedit_data_command_external raw;
3435
3436 if (bfd_seek (abfd, command->offset + BFD_MACH_O_LC_SIZE, SEEK_SET) != 0
3437 || bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
3438 return -1;
3439
3440 cmd->dataoff = bfd_get_32 (abfd, raw.dataoff);
3441 cmd->datasize = bfd_get_32 (abfd, raw.datasize);
3442 return 0;
3443 }
3444
3445 static int
3446 bfd_mach_o_read_str (bfd *abfd, bfd_mach_o_load_command *command)
3447 {
3448 bfd_mach_o_str_command *cmd = &command->command.str;
3449 struct mach_o_str_command_external raw;
3450 unsigned long off;
3451
3452 if (bfd_seek (abfd, command->offset + BFD_MACH_O_LC_SIZE, SEEK_SET) != 0
3453 || bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
3454 return -1;
3455
3456 off = bfd_get_32 (abfd, raw.str);
3457 cmd->stroff = command->offset + off;
3458 cmd->str_len = command->len - off;
3459 cmd->str = bfd_alloc (abfd, cmd->str_len);
3460 if (cmd->str == NULL)
3461 return -1;
3462 if (bfd_seek (abfd, cmd->stroff, SEEK_SET) != 0
3463 || bfd_bread ((void *) cmd->str, cmd->str_len, abfd) != cmd->str_len)
3464 return -1;
3465 return 0;
3466 }
3467
3468 static int
3469 bfd_mach_o_read_dyld_info (bfd *abfd, bfd_mach_o_load_command *command)
3470 {
3471 bfd_mach_o_dyld_info_command *cmd = &command->command.dyld_info;
3472 struct mach_o_dyld_info_command_external raw;
3473
3474 if (bfd_seek (abfd, command->offset + BFD_MACH_O_LC_SIZE, SEEK_SET) != 0
3475 || bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
3476 return -1;
3477
3478 cmd->rebase_off = bfd_get_32 (abfd, raw.rebase_off);
3479 cmd->rebase_size = bfd_get_32 (abfd, raw.rebase_size);
3480 cmd->bind_off = bfd_get_32 (abfd, raw.bind_off);
3481 cmd->bind_size = bfd_get_32 (abfd, raw.bind_size);
3482 cmd->weak_bind_off = bfd_get_32 (abfd, raw.weak_bind_off);
3483 cmd->weak_bind_size = bfd_get_32 (abfd, raw.weak_bind_size);
3484 cmd->lazy_bind_off = bfd_get_32 (abfd, raw.lazy_bind_off);
3485 cmd->lazy_bind_size = bfd_get_32 (abfd, raw.lazy_bind_size);
3486 cmd->export_off = bfd_get_32 (abfd, raw.export_off);
3487 cmd->export_size = bfd_get_32 (abfd, raw.export_size);
3488 return 0;
3489 }
3490
3491 static bfd_boolean
3492 bfd_mach_o_read_version_min (bfd *abfd, bfd_mach_o_load_command *command)
3493 {
3494 bfd_mach_o_version_min_command *cmd = &command->command.version_min;
3495 struct mach_o_version_min_command_external raw;
3496 unsigned int ver;
3497
3498 if (bfd_seek (abfd, command->offset + BFD_MACH_O_LC_SIZE, SEEK_SET) != 0
3499 || bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
3500 return FALSE;
3501
3502 ver = bfd_get_32 (abfd, raw.version);
3503 cmd->rel = ver >> 16;
3504 cmd->maj = ver >> 8;
3505 cmd->min = ver;
3506 cmd->reserved = bfd_get_32 (abfd, raw.reserved);
3507 return TRUE;
3508 }
3509
3510 static bfd_boolean
3511 bfd_mach_o_read_encryption_info (bfd *abfd, bfd_mach_o_load_command *command)
3512 {
3513 bfd_mach_o_encryption_info_command *cmd = &command->command.encryption_info;
3514 struct mach_o_encryption_info_command_external raw;
3515
3516 if (bfd_seek (abfd, command->offset + BFD_MACH_O_LC_SIZE, SEEK_SET) != 0
3517 || bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
3518 return FALSE;
3519
3520 cmd->cryptoff = bfd_get_32 (abfd, raw.cryptoff);
3521 cmd->cryptsize = bfd_get_32 (abfd, raw.cryptsize);
3522 cmd->cryptid = bfd_get_32 (abfd, raw.cryptid);
3523 return TRUE;
3524 }
3525
3526 static int
3527 bfd_mach_o_read_segment (bfd *abfd,
3528 bfd_mach_o_load_command *command,
3529 unsigned int wide)
3530 {
3531 bfd_mach_o_segment_command *seg = &command->command.segment;
3532 unsigned long i;
3533
3534 if (wide)
3535 {
3536 struct mach_o_segment_command_64_external raw;
3537
3538 BFD_ASSERT (command->type == BFD_MACH_O_LC_SEGMENT_64);
3539
3540 if (bfd_seek (abfd, command->offset + BFD_MACH_O_LC_SIZE, SEEK_SET) != 0
3541 || bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
3542 return -1;
3543
3544 memcpy (seg->segname, raw.segname, 16);
3545 seg->segname[16] = '\0';
3546
3547 seg->vmaddr = bfd_h_get_64 (abfd, raw.vmaddr);
3548 seg->vmsize = bfd_h_get_64 (abfd, raw.vmsize);
3549 seg->fileoff = bfd_h_get_64 (abfd, raw.fileoff);
3550 seg->filesize = bfd_h_get_64 (abfd, raw.filesize);
3551 seg->maxprot = bfd_h_get_32 (abfd, raw.maxprot);
3552 seg->initprot = bfd_h_get_32 (abfd, raw.initprot);
3553 seg->nsects = bfd_h_get_32 (abfd, raw.nsects);
3554 seg->flags = bfd_h_get_32 (abfd, raw.flags);
3555 }
3556 else
3557 {
3558 struct mach_o_segment_command_32_external raw;
3559
3560 BFD_ASSERT (command->type == BFD_MACH_O_LC_SEGMENT);
3561
3562 if (bfd_seek (abfd, command->offset + BFD_MACH_O_LC_SIZE, SEEK_SET) != 0
3563 || bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
3564 return -1;
3565
3566 memcpy (seg->segname, raw.segname, 16);
3567 seg->segname[16] = '\0';
3568
3569 seg->vmaddr = bfd_h_get_32 (abfd, raw.vmaddr);
3570 seg->vmsize = bfd_h_get_32 (abfd, raw.vmsize);
3571 seg->fileoff = bfd_h_get_32 (abfd, raw.fileoff);
3572 seg->filesize = bfd_h_get_32 (abfd, raw.filesize);
3573 seg->maxprot = bfd_h_get_32 (abfd, raw.maxprot);
3574 seg->initprot = bfd_h_get_32 (abfd, raw.initprot);
3575 seg->nsects = bfd_h_get_32 (abfd, raw.nsects);
3576 seg->flags = bfd_h_get_32 (abfd, raw.flags);
3577 }
3578 seg->sect_head = NULL;
3579 seg->sect_tail = NULL;
3580
3581 for (i = 0; i < seg->nsects; i++)
3582 {
3583 bfd_vma segoff;
3584 asection *sec;
3585
3586 if (wide)
3587 segoff = command->offset + BFD_MACH_O_LC_SEGMENT_64_SIZE
3588 + (i * BFD_MACH_O_SECTION_64_SIZE);
3589 else
3590 segoff = command->offset + BFD_MACH_O_LC_SEGMENT_SIZE
3591 + (i * BFD_MACH_O_SECTION_SIZE);
3592
3593 sec = bfd_mach_o_read_section (abfd, segoff, seg->initprot, wide);
3594 if (sec == NULL)
3595 return -1;
3596
3597 bfd_mach_o_append_section_to_segment (seg, sec);
3598 }
3599
3600 return 0;
3601 }
3602
3603 static int
3604 bfd_mach_o_read_segment_32 (bfd *abfd, bfd_mach_o_load_command *command)
3605 {
3606 return bfd_mach_o_read_segment (abfd, command, 0);
3607 }
3608
3609 static int
3610 bfd_mach_o_read_segment_64 (bfd *abfd, bfd_mach_o_load_command *command)
3611 {
3612 return bfd_mach_o_read_segment (abfd, command, 1);
3613 }
3614
3615 static int
3616 bfd_mach_o_read_command (bfd *abfd, bfd_mach_o_load_command *command)
3617 {
3618 struct mach_o_load_command_external raw;
3619 unsigned int cmd;
3620
3621 /* Read command type and length. */
3622 if (bfd_seek (abfd, command->offset, SEEK_SET) != 0
3623 || bfd_bread (&raw, BFD_MACH_O_LC_SIZE, abfd) != BFD_MACH_O_LC_SIZE)
3624 return -1;
3625
3626 cmd = bfd_h_get_32 (abfd, raw.cmd);
3627 command->type = cmd & ~BFD_MACH_O_LC_REQ_DYLD;
3628 command->type_required = cmd & BFD_MACH_O_LC_REQ_DYLD ? TRUE : FALSE;
3629 command->len = bfd_h_get_32 (abfd, raw.cmdsize);
3630
3631 switch (command->type)
3632 {
3633 case BFD_MACH_O_LC_SEGMENT:
3634 if (bfd_mach_o_read_segment_32 (abfd, command) != 0)
3635 return -1;
3636 break;
3637 case BFD_MACH_O_LC_SEGMENT_64:
3638 if (bfd_mach_o_read_segment_64 (abfd, command) != 0)
3639 return -1;
3640 break;
3641 case BFD_MACH_O_LC_SYMTAB:
3642 if (bfd_mach_o_read_symtab (abfd, command) != 0)
3643 return -1;
3644 break;
3645 case BFD_MACH_O_LC_SYMSEG:
3646 break;
3647 case BFD_MACH_O_LC_THREAD:
3648 case BFD_MACH_O_LC_UNIXTHREAD:
3649 if (bfd_mach_o_read_thread (abfd, command) != 0)
3650 return -1;
3651 break;
3652 case BFD_MACH_O_LC_LOAD_DYLINKER:
3653 case BFD_MACH_O_LC_ID_DYLINKER:
3654 if (bfd_mach_o_read_dylinker (abfd, command) != 0)
3655 return -1;
3656 break;
3657 case BFD_MACH_O_LC_LOAD_DYLIB:
3658 case BFD_MACH_O_LC_ID_DYLIB:
3659 case BFD_MACH_O_LC_LOAD_WEAK_DYLIB:
3660 case BFD_MACH_O_LC_REEXPORT_DYLIB:
3661 case BFD_MACH_O_LC_LOAD_UPWARD_DYLIB:
3662 if (bfd_mach_o_read_dylib (abfd, command) != 0)
3663 return -1;
3664 break;
3665 case BFD_MACH_O_LC_PREBOUND_DYLIB:
3666 if (bfd_mach_o_read_prebound_dylib (abfd, command) != 0)
3667 return -1;
3668 break;
3669 case BFD_MACH_O_LC_LOADFVMLIB:
3670 case BFD_MACH_O_LC_IDFVMLIB:
3671 if (bfd_mach_o_read_fvmlib (abfd, command) != 0)
3672 return -1;
3673 break;
3674 case BFD_MACH_O_LC_IDENT:
3675 case BFD_MACH_O_LC_FVMFILE:
3676 case BFD_MACH_O_LC_PREPAGE:
3677 case BFD_MACH_O_LC_ROUTINES:
3678 case BFD_MACH_O_LC_ROUTINES_64:
3679 break;
3680 case BFD_MACH_O_LC_SUB_FRAMEWORK:
3681 case BFD_MACH_O_LC_SUB_UMBRELLA:
3682 case BFD_MACH_O_LC_SUB_LIBRARY:
3683 case BFD_MACH_O_LC_SUB_CLIENT:
3684 case BFD_MACH_O_LC_RPATH:
3685 if (bfd_mach_o_read_str (abfd, command) != 0)
3686 return -1;
3687 break;
3688 case BFD_MACH_O_LC_DYSYMTAB:
3689 if (bfd_mach_o_read_dysymtab (abfd, command) != 0)
3690 return -1;
3691 break;
3692 case BFD_MACH_O_LC_TWOLEVEL_HINTS:
3693 case BFD_MACH_O_LC_PREBIND_CKSUM:
3694 break;
3695 case BFD_MACH_O_LC_UUID:
3696 if (bfd_mach_o_read_uuid (abfd, command) != 0)
3697 return -1;
3698 break;
3699 case BFD_MACH_O_LC_CODE_SIGNATURE:
3700 case BFD_MACH_O_LC_SEGMENT_SPLIT_INFO:
3701 case BFD_MACH_O_LC_FUNCTION_STARTS:
3702 if (bfd_mach_o_read_linkedit (abfd, command) != 0)
3703 return -1;
3704 break;
3705 case BFD_MACH_O_LC_ENCRYPTION_INFO:
3706 if (!bfd_mach_o_read_encryption_info (abfd, command))
3707 return -1;
3708 break;
3709 case BFD_MACH_O_LC_DYLD_INFO:
3710 if (bfd_mach_o_read_dyld_info (abfd, command) != 0)
3711 return -1;
3712 break;
3713 case BFD_MACH_O_LC_VERSION_MIN_MACOSX:
3714 case BFD_MACH_O_LC_VERSION_MIN_IPHONEOS:
3715 if (!bfd_mach_o_read_version_min (abfd, command))
3716 return -1;
3717 break;
3718 default:
3719 (*_bfd_error_handler)(_("%B: unknown load command 0x%lx"),
3720 abfd, (unsigned long) command->type);
3721 break;
3722 }
3723
3724 return 0;
3725 }
3726
3727 static void
3728 bfd_mach_o_flatten_sections (bfd *abfd)
3729 {
3730 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
3731 long csect = 0;
3732 unsigned long i;
3733
3734 /* Count total number of sections. */
3735 mdata->nsects = 0;
3736
3737 for (i = 0; i < mdata->header.ncmds; i++)
3738 {
3739 if (mdata->commands[i].type == BFD_MACH_O_LC_SEGMENT
3740 || mdata->commands[i].type == BFD_MACH_O_LC_SEGMENT_64)
3741 {
3742 bfd_mach_o_segment_command *seg;
3743
3744 seg = &mdata->commands[i].command.segment;
3745 mdata->nsects += seg->nsects;
3746 }
3747 }
3748
3749 /* Allocate sections array. */
3750 mdata->sections = bfd_alloc (abfd,
3751 mdata->nsects * sizeof (bfd_mach_o_section *));
3752
3753 /* Fill the array. */
3754 csect = 0;
3755
3756 for (i = 0; i < mdata->header.ncmds; i++)
3757 {
3758 if (mdata->commands[i].type == BFD_MACH_O_LC_SEGMENT
3759 || mdata->commands[i].type == BFD_MACH_O_LC_SEGMENT_64)
3760 {
3761 bfd_mach_o_segment_command *seg;
3762 bfd_mach_o_section *sec;
3763
3764 seg = &mdata->commands[i].command.segment;
3765 BFD_ASSERT (csect + seg->nsects <= mdata->nsects);
3766
3767 for (sec = seg->sect_head; sec != NULL; sec = sec->next)
3768 mdata->sections[csect++] = sec;
3769 }
3770 }
3771 }
3772
3773 static bfd_boolean
3774 bfd_mach_o_scan_start_address (bfd *abfd)
3775 {
3776 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
3777 bfd_mach_o_thread_command *cmd = NULL;
3778 unsigned long i;
3779
3780 for (i = 0; i < mdata->header.ncmds; i++)
3781 if ((mdata->commands[i].type == BFD_MACH_O_LC_THREAD) ||
3782 (mdata->commands[i].type == BFD_MACH_O_LC_UNIXTHREAD))
3783 {
3784 cmd = &mdata->commands[i].command.thread;
3785 break;
3786 }
3787
3788 if (cmd == NULL)
3789 return FALSE;
3790
3791 /* FIXME: create a subtarget hook ? */
3792 for (i = 0; i < cmd->nflavours; i++)
3793 {
3794 if ((mdata->header.cputype == BFD_MACH_O_CPU_TYPE_I386)
3795 && (cmd->flavours[i].flavour
3796 == (unsigned long) BFD_MACH_O_x86_THREAD_STATE32))
3797 {
3798 unsigned char buf[4];
3799
3800 if (bfd_seek (abfd, cmd->flavours[i].offset + 40, SEEK_SET) != 0
3801 || bfd_bread (buf, 4, abfd) != 4)
3802 return FALSE;
3803
3804 abfd->start_address = bfd_h_get_32 (abfd, buf);
3805 }
3806 else if ((mdata->header.cputype == BFD_MACH_O_CPU_TYPE_POWERPC)
3807 && (cmd->flavours[i].flavour == BFD_MACH_O_PPC_THREAD_STATE))
3808 {
3809 unsigned char buf[4];
3810
3811 if (bfd_seek (abfd, cmd->flavours[i].offset + 0, SEEK_SET) != 0
3812 || bfd_bread (buf, 4, abfd) != 4)
3813 return FALSE;
3814
3815 abfd->start_address = bfd_h_get_32 (abfd, buf);
3816 }
3817 else if ((mdata->header.cputype == BFD_MACH_O_CPU_TYPE_POWERPC_64)
3818 && (cmd->flavours[i].flavour == BFD_MACH_O_PPC_THREAD_STATE64))
3819 {
3820 unsigned char buf[8];
3821
3822 if (bfd_seek (abfd, cmd->flavours[i].offset + 0, SEEK_SET) != 0
3823 || bfd_bread (buf, 8, abfd) != 8)
3824 return FALSE;
3825
3826 abfd->start_address = bfd_h_get_64 (abfd, buf);
3827 }
3828 else if ((mdata->header.cputype == BFD_MACH_O_CPU_TYPE_X86_64)
3829 && (cmd->flavours[i].flavour == BFD_MACH_O_x86_THREAD_STATE64))
3830 {
3831 unsigned char buf[8];
3832
3833 if (bfd_seek (abfd, cmd->flavours[i].offset + (16 * 8), SEEK_SET) != 0
3834 || bfd_bread (buf, 8, abfd) != 8)
3835 return FALSE;
3836
3837 abfd->start_address = bfd_h_get_64 (abfd, buf);
3838 }
3839 }
3840
3841 return TRUE;
3842 }
3843
3844 bfd_boolean
3845 bfd_mach_o_set_arch_mach (bfd *abfd,
3846 enum bfd_architecture arch,
3847 unsigned long machine)
3848 {
3849 bfd_mach_o_backend_data *bed = bfd_mach_o_get_backend_data (abfd);
3850
3851 /* If this isn't the right architecture for this backend, and this
3852 isn't the generic backend, fail. */
3853 if (arch != bed->arch
3854 && arch != bfd_arch_unknown
3855 && bed->arch != bfd_arch_unknown)
3856 return FALSE;
3857
3858 return bfd_default_set_arch_mach (abfd, arch, machine);
3859 }
3860
3861 static bfd_boolean
3862 bfd_mach_o_scan (bfd *abfd,
3863 bfd_mach_o_header *header,
3864 bfd_mach_o_data_struct *mdata)
3865 {
3866 unsigned int i;
3867 enum bfd_architecture cputype;
3868 unsigned long cpusubtype;
3869 unsigned int hdrsize;
3870
3871 hdrsize = mach_o_wide_p (header) ?
3872 BFD_MACH_O_HEADER_64_SIZE : BFD_MACH_O_HEADER_SIZE;
3873
3874 mdata->header = *header;
3875
3876 abfd->flags = abfd->flags & BFD_IN_MEMORY;
3877 switch (header->filetype)
3878 {
3879 case BFD_MACH_O_MH_OBJECT:
3880 abfd->flags |= HAS_RELOC;
3881 break;
3882 case BFD_MACH_O_MH_EXECUTE:
3883 abfd->flags |= EXEC_P;
3884 break;
3885 case BFD_MACH_O_MH_DYLIB:
3886 case BFD_MACH_O_MH_BUNDLE:
3887 abfd->flags |= DYNAMIC;
3888 break;
3889 }
3890
3891 abfd->tdata.mach_o_data = mdata;
3892
3893 bfd_mach_o_convert_architecture (header->cputype, header->cpusubtype,
3894 &cputype, &cpusubtype);
3895 if (cputype == bfd_arch_unknown)
3896 {
3897 (*_bfd_error_handler)
3898 (_("bfd_mach_o_scan: unknown architecture 0x%lx/0x%lx"),
3899 header->cputype, header->cpusubtype);
3900 return FALSE;
3901 }
3902
3903 bfd_set_arch_mach (abfd, cputype, cpusubtype);
3904
3905 if (header->ncmds != 0)
3906 {
3907 mdata->commands = bfd_alloc
3908 (abfd, header->ncmds * sizeof (bfd_mach_o_load_command));
3909 if (mdata->commands == NULL)
3910 return FALSE;
3911
3912 for (i = 0; i < header->ncmds; i++)
3913 {
3914 bfd_mach_o_load_command *cur = &mdata->commands[i];
3915
3916 if (i == 0)
3917 cur->offset = hdrsize;
3918 else
3919 {
3920 bfd_mach_o_load_command *prev = &mdata->commands[i - 1];
3921 cur->offset = prev->offset + prev->len;
3922 }
3923
3924 if (bfd_mach_o_read_command (abfd, cur) < 0)
3925 return FALSE;
3926 }
3927 }
3928
3929 if (bfd_mach_o_scan_start_address (abfd) < 0)
3930 return FALSE;
3931
3932 bfd_mach_o_flatten_sections (abfd);
3933 return TRUE;
3934 }
3935
3936 bfd_boolean
3937 bfd_mach_o_mkobject_init (bfd *abfd)
3938 {
3939 bfd_mach_o_data_struct *mdata = NULL;
3940
3941 mdata = bfd_alloc (abfd, sizeof (bfd_mach_o_data_struct));
3942 if (mdata == NULL)
3943 return FALSE;
3944 abfd->tdata.mach_o_data = mdata;
3945
3946 mdata->header.magic = 0;
3947 mdata->header.cputype = 0;
3948 mdata->header.cpusubtype = 0;
3949 mdata->header.filetype = 0;
3950 mdata->header.ncmds = 0;
3951 mdata->header.sizeofcmds = 0;
3952 mdata->header.flags = 0;
3953 mdata->header.byteorder = BFD_ENDIAN_UNKNOWN;
3954 mdata->commands = NULL;
3955 mdata->nsects = 0;
3956 mdata->sections = NULL;
3957 mdata->dyn_reloc_cache = NULL;
3958
3959 return TRUE;
3960 }
3961
3962 static bfd_boolean
3963 bfd_mach_o_gen_mkobject (bfd *abfd)
3964 {
3965 bfd_mach_o_data_struct *mdata;
3966
3967 if (!bfd_mach_o_mkobject_init (abfd))
3968 return FALSE;
3969
3970 mdata = bfd_mach_o_get_data (abfd);
3971 mdata->header.magic = BFD_MACH_O_MH_MAGIC;
3972 mdata->header.cputype = 0;
3973 mdata->header.cpusubtype = 0;
3974 mdata->header.byteorder = abfd->xvec->byteorder;
3975 mdata->header.version = 1;
3976
3977 return TRUE;
3978 }
3979
3980 const bfd_target *
3981 bfd_mach_o_header_p (bfd *abfd,
3982 bfd_mach_o_filetype filetype,
3983 bfd_mach_o_cpu_type cputype)
3984 {
3985 struct bfd_preserve preserve;
3986 bfd_mach_o_header header;
3987
3988 preserve.marker = NULL;
3989 if (!bfd_mach_o_read_header (abfd, &header))
3990 goto wrong;
3991
3992 if (! (header.byteorder == BFD_ENDIAN_BIG
3993 || header.byteorder == BFD_ENDIAN_LITTLE))
3994 {
3995 (*_bfd_error_handler) (_("unknown header byte-order value 0x%lx"),
3996 (unsigned long) header.byteorder);
3997 goto wrong;
3998 }
3999
4000 if (! ((header.byteorder == BFD_ENDIAN_BIG
4001 && abfd->xvec->byteorder == BFD_ENDIAN_BIG
4002 && abfd->xvec->header_byteorder == BFD_ENDIAN_BIG)
4003 || (header.byteorder == BFD_ENDIAN_LITTLE
4004 && abfd->xvec->byteorder == BFD_ENDIAN_LITTLE
4005 && abfd->xvec->header_byteorder == BFD_ENDIAN_LITTLE)))
4006 goto wrong;
4007
4008 /* Check cputype and filetype.
4009 In case of wildcard, do not accept magics that are handled by existing
4010 targets. */
4011 if (cputype)
4012 {
4013 if (header.cputype != cputype)
4014 goto wrong;
4015 }
4016
4017 if (filetype)
4018 {
4019 if (header.filetype != filetype)
4020 goto wrong;
4021 }
4022 else
4023 {
4024 switch (header.filetype)
4025 {
4026 case BFD_MACH_O_MH_CORE:
4027 /* Handled by core_p */
4028 goto wrong;
4029 default:
4030 break;
4031 }
4032 }
4033
4034 preserve.marker = bfd_zalloc (abfd, sizeof (bfd_mach_o_data_struct));
4035 if (preserve.marker == NULL
4036 || !bfd_preserve_save (abfd, &preserve))
4037 goto fail;
4038
4039 if (!bfd_mach_o_scan (abfd, &header,
4040 (bfd_mach_o_data_struct *) preserve.marker))
4041 goto wrong;
4042
4043 bfd_preserve_finish (abfd, &preserve);
4044 return abfd->xvec;
4045
4046 wrong:
4047 bfd_set_error (bfd_error_wrong_format);
4048
4049 fail:
4050 if (preserve.marker != NULL)
4051 bfd_preserve_restore (abfd, &preserve);
4052 return NULL;
4053 }
4054
4055 static const bfd_target *
4056 bfd_mach_o_gen_object_p (bfd *abfd)
4057 {
4058 return bfd_mach_o_header_p (abfd, 0, 0);
4059 }
4060
4061 static const bfd_target *
4062 bfd_mach_o_gen_core_p (bfd *abfd)
4063 {
4064 return bfd_mach_o_header_p (abfd, BFD_MACH_O_MH_CORE, 0);
4065 }
4066
4067 typedef struct mach_o_fat_archentry
4068 {
4069 unsigned long cputype;
4070 unsigned long cpusubtype;
4071 unsigned long offset;
4072 unsigned long size;
4073 unsigned long align;
4074 } mach_o_fat_archentry;
4075
4076 typedef struct mach_o_fat_data_struct
4077 {
4078 unsigned long magic;
4079 unsigned long nfat_arch;
4080 mach_o_fat_archentry *archentries;
4081 } mach_o_fat_data_struct;
4082
4083 const bfd_target *
4084 bfd_mach_o_archive_p (bfd *abfd)
4085 {
4086 mach_o_fat_data_struct *adata = NULL;
4087 struct mach_o_fat_header_external hdr;
4088 unsigned long i;
4089
4090 if (bfd_seek (abfd, 0, SEEK_SET) != 0
4091 || bfd_bread (&hdr, sizeof (hdr), abfd) != sizeof (hdr))
4092 goto error;
4093
4094 adata = bfd_alloc (abfd, sizeof (mach_o_fat_data_struct));
4095 if (adata == NULL)
4096 goto error;
4097
4098 adata->magic = bfd_getb32 (hdr.magic);
4099 adata->nfat_arch = bfd_getb32 (hdr.nfat_arch);
4100 if (adata->magic != 0xcafebabe)
4101 goto error;
4102 /* Avoid matching Java bytecode files, which have the same magic number.
4103 In the Java bytecode file format this field contains the JVM version,
4104 which starts at 43.0. */
4105 if (adata->nfat_arch > 30)
4106 goto error;
4107
4108 adata->archentries =
4109 bfd_alloc (abfd, adata->nfat_arch * sizeof (mach_o_fat_archentry));
4110 if (adata->archentries == NULL)
4111 goto error;
4112
4113 for (i = 0; i < adata->nfat_arch; i++)
4114 {
4115 struct mach_o_fat_arch_external arch;
4116 if (bfd_bread (&arch, sizeof (arch), abfd) != sizeof (arch))
4117 goto error;
4118 adata->archentries[i].cputype = bfd_getb32 (arch.cputype);
4119 adata->archentries[i].cpusubtype = bfd_getb32 (arch.cpusubtype);
4120 adata->archentries[i].offset = bfd_getb32 (arch.offset);
4121 adata->archentries[i].size = bfd_getb32 (arch.size);
4122 adata->archentries[i].align = bfd_getb32 (arch.align);
4123 }
4124
4125 abfd->tdata.mach_o_fat_data = adata;
4126 return abfd->xvec;
4127
4128 error:
4129 if (adata != NULL)
4130 bfd_release (abfd, adata);
4131 bfd_set_error (bfd_error_wrong_format);
4132 return NULL;
4133 }
4134
4135 /* Set the filename for a fat binary member ABFD, whose bfd architecture is
4136 ARCH_TYPE/ARCH_SUBTYPE and corresponding entry in header is ENTRY.
4137 Set arelt_data and origin fields too. */
4138
4139 static void
4140 bfd_mach_o_fat_member_init (bfd *abfd,
4141 enum bfd_architecture arch_type,
4142 unsigned long arch_subtype,
4143 mach_o_fat_archentry *entry)
4144 {
4145 struct areltdata *areltdata;
4146 /* Create the member filename. Use ARCH_NAME. */
4147 const bfd_arch_info_type *ap = bfd_lookup_arch (arch_type, arch_subtype);
4148
4149 if (ap)
4150 {
4151 /* Use the architecture name if known. */
4152 abfd->filename = ap->printable_name;
4153 }
4154 else
4155 {
4156 /* Forge a uniq id. */
4157 const size_t namelen = 2 + 8 + 1 + 2 + 8 + 1;
4158 char *name = bfd_alloc (abfd, namelen);
4159 snprintf (name, namelen, "0x%lx-0x%lx",
4160 entry->cputype, entry->cpusubtype);
4161 abfd->filename = name;
4162 }
4163
4164 areltdata = bfd_zalloc (abfd, sizeof (struct areltdata));
4165 areltdata->parsed_size = entry->size;
4166 abfd->arelt_data = areltdata;
4167 abfd->iostream = NULL;
4168 abfd->origin = entry->offset;
4169 }
4170
4171 bfd *
4172 bfd_mach_o_openr_next_archived_file (bfd *archive, bfd *prev)
4173 {
4174 mach_o_fat_data_struct *adata;
4175 mach_o_fat_archentry *entry = NULL;
4176 unsigned long i;
4177 bfd *nbfd;
4178 enum bfd_architecture arch_type;
4179 unsigned long arch_subtype;
4180
4181 adata = (mach_o_fat_data_struct *) archive->tdata.mach_o_fat_data;
4182 BFD_ASSERT (adata != NULL);
4183
4184 /* Find index of previous entry. */
4185 if (prev == NULL)
4186 {
4187 /* Start at first one. */
4188 i = 0;
4189 }
4190 else
4191 {
4192 /* Find index of PREV. */
4193 for (i = 0; i < adata->nfat_arch; i++)
4194 {
4195 if (adata->archentries[i].offset == prev->origin)
4196 break;
4197 }
4198
4199 if (i == adata->nfat_arch)
4200 {
4201 /* Not found. */
4202 bfd_set_error (bfd_error_bad_value);
4203 return NULL;
4204 }
4205
4206 /* Get next entry. */
4207 i++;
4208 }
4209
4210 if (i >= adata->nfat_arch)
4211 {
4212 bfd_set_error (bfd_error_no_more_archived_files);
4213 return NULL;
4214 }
4215
4216 entry = &adata->archentries[i];
4217 nbfd = _bfd_new_bfd_contained_in (archive);
4218 if (nbfd == NULL)
4219 return NULL;
4220
4221 bfd_mach_o_convert_architecture (entry->cputype, entry->cpusubtype,
4222 &arch_type, &arch_subtype);
4223
4224 bfd_mach_o_fat_member_init (nbfd, arch_type, arch_subtype, entry);
4225
4226 bfd_set_arch_mach (nbfd, arch_type, arch_subtype);
4227
4228 return nbfd;
4229 }
4230
4231 /* Analogous to stat call. */
4232
4233 static int
4234 bfd_mach_o_fat_stat_arch_elt (bfd *abfd, struct stat *buf)
4235 {
4236 if (abfd->arelt_data == NULL)
4237 {
4238 bfd_set_error (bfd_error_invalid_operation);
4239 return -1;
4240 }
4241
4242 buf->st_mtime = 0;
4243 buf->st_uid = 0;
4244 buf->st_gid = 0;
4245 buf->st_mode = 0644;
4246 buf->st_size = arelt_size (abfd);
4247
4248 return 0;
4249 }
4250
4251 /* If ABFD format is FORMAT and architecture is ARCH, return it.
4252 If ABFD is a fat image containing a member that corresponds to FORMAT
4253 and ARCH, returns it.
4254 In other case, returns NULL.
4255 This function allows transparent uses of fat images. */
4256
4257 bfd *
4258 bfd_mach_o_fat_extract (bfd *abfd,
4259 bfd_format format,
4260 const bfd_arch_info_type *arch)
4261 {
4262 bfd *res;
4263 mach_o_fat_data_struct *adata;
4264 unsigned int i;
4265
4266 if (bfd_check_format (abfd, format))
4267 {
4268 if (bfd_get_arch_info (abfd) == arch)
4269 return abfd;
4270 return NULL;
4271 }
4272 if (!bfd_check_format (abfd, bfd_archive)
4273 || abfd->xvec != &mach_o_fat_vec)
4274 return NULL;
4275
4276 /* This is a Mach-O fat image. */
4277 adata = (mach_o_fat_data_struct *) abfd->tdata.mach_o_fat_data;
4278 BFD_ASSERT (adata != NULL);
4279
4280 for (i = 0; i < adata->nfat_arch; i++)
4281 {
4282 struct mach_o_fat_archentry *e = &adata->archentries[i];
4283 enum bfd_architecture cpu_type;
4284 unsigned long cpu_subtype;
4285
4286 bfd_mach_o_convert_architecture (e->cputype, e->cpusubtype,
4287 &cpu_type, &cpu_subtype);
4288 if (cpu_type != arch->arch || cpu_subtype != arch->mach)
4289 continue;
4290
4291 /* The architecture is found. */
4292 res = _bfd_new_bfd_contained_in (abfd);
4293 if (res == NULL)
4294 return NULL;
4295
4296 bfd_mach_o_fat_member_init (res, cpu_type, cpu_subtype, e);
4297
4298 if (bfd_check_format (res, format))
4299 {
4300 BFD_ASSERT (bfd_get_arch_info (res) == arch);
4301 return res;
4302 }
4303 bfd_close (res);
4304 return NULL;
4305 }
4306
4307 return NULL;
4308 }
4309
4310 int
4311 bfd_mach_o_lookup_command (bfd *abfd,
4312 bfd_mach_o_load_command_type type,
4313 bfd_mach_o_load_command **mcommand)
4314 {
4315 struct mach_o_data_struct *md = bfd_mach_o_get_data (abfd);
4316 bfd_mach_o_load_command *ncmd = NULL;
4317 unsigned int i, num;
4318
4319 BFD_ASSERT (md != NULL);
4320 BFD_ASSERT (mcommand != NULL);
4321
4322 num = 0;
4323 for (i = 0; i < md->header.ncmds; i++)
4324 {
4325 struct bfd_mach_o_load_command *cmd = &md->commands[i];
4326
4327 if (cmd->type != type)
4328 continue;
4329
4330 if (num == 0)
4331 ncmd = cmd;
4332 num++;
4333 }
4334
4335 *mcommand = ncmd;
4336 return num;
4337 }
4338
4339 unsigned long
4340 bfd_mach_o_stack_addr (enum bfd_mach_o_cpu_type type)
4341 {
4342 switch (type)
4343 {
4344 case BFD_MACH_O_CPU_TYPE_MC680x0:
4345 return 0x04000000;
4346 case BFD_MACH_O_CPU_TYPE_MC88000:
4347 return 0xffffe000;
4348 case BFD_MACH_O_CPU_TYPE_POWERPC:
4349 return 0xc0000000;
4350 case BFD_MACH_O_CPU_TYPE_I386:
4351 return 0xc0000000;
4352 case BFD_MACH_O_CPU_TYPE_SPARC:
4353 return 0xf0000000;
4354 case BFD_MACH_O_CPU_TYPE_I860:
4355 return 0;
4356 case BFD_MACH_O_CPU_TYPE_HPPA:
4357 return 0xc0000000 - 0x04000000;
4358 default:
4359 return 0;
4360 }
4361 }
4362
4363 /* The following two tables should be kept, as far as possible, in order of
4364 most frequently used entries to optimize their use from gas. */
4365
4366 const bfd_mach_o_xlat_name bfd_mach_o_section_type_name[] =
4367 {
4368 { "regular", BFD_MACH_O_S_REGULAR},
4369 { "coalesced", BFD_MACH_O_S_COALESCED},
4370 { "zerofill", BFD_MACH_O_S_ZEROFILL},
4371 { "cstring_literals", BFD_MACH_O_S_CSTRING_LITERALS},
4372 { "4byte_literals", BFD_MACH_O_S_4BYTE_LITERALS},
4373 { "8byte_literals", BFD_MACH_O_S_8BYTE_LITERALS},
4374 { "16byte_literals", BFD_MACH_O_S_16BYTE_LITERALS},
4375 { "literal_pointers", BFD_MACH_O_S_LITERAL_POINTERS},
4376 { "mod_init_func_pointers", BFD_MACH_O_S_MOD_INIT_FUNC_POINTERS},
4377 { "mod_fini_func_pointers", BFD_MACH_O_S_MOD_FINI_FUNC_POINTERS},
4378 { "gb_zerofill", BFD_MACH_O_S_GB_ZEROFILL},
4379 { "interposing", BFD_MACH_O_S_INTERPOSING},
4380 { "dtrace_dof", BFD_MACH_O_S_DTRACE_DOF},
4381 { "non_lazy_symbol_pointers", BFD_MACH_O_S_NON_LAZY_SYMBOL_POINTERS},
4382 { "lazy_symbol_pointers", BFD_MACH_O_S_LAZY_SYMBOL_POINTERS},
4383 { "symbol_stubs", BFD_MACH_O_S_SYMBOL_STUBS},
4384 { "lazy_dylib_symbol_pointers", BFD_MACH_O_S_LAZY_DYLIB_SYMBOL_POINTERS},
4385 { NULL, 0}
4386 };
4387
4388 const bfd_mach_o_xlat_name bfd_mach_o_section_attribute_name[] =
4389 {
4390 { "pure_instructions", BFD_MACH_O_S_ATTR_PURE_INSTRUCTIONS },
4391 { "some_instructions", BFD_MACH_O_S_ATTR_SOME_INSTRUCTIONS },
4392 { "loc_reloc", BFD_MACH_O_S_ATTR_LOC_RELOC },
4393 { "ext_reloc", BFD_MACH_O_S_ATTR_EXT_RELOC },
4394 { "debug", BFD_MACH_O_S_ATTR_DEBUG },
4395 { "live_support", BFD_MACH_O_S_ATTR_LIVE_SUPPORT },
4396 { "no_dead_strip", BFD_MACH_O_S_ATTR_NO_DEAD_STRIP },
4397 { "strip_static_syms", BFD_MACH_O_S_ATTR_STRIP_STATIC_SYMS },
4398 { "no_toc", BFD_MACH_O_S_ATTR_NO_TOC },
4399 { "self_modifying_code", BFD_MACH_O_S_SELF_MODIFYING_CODE },
4400 { "modifying_code", BFD_MACH_O_S_SELF_MODIFYING_CODE },
4401 { NULL, 0}
4402 };
4403
4404 /* Get the section type from NAME. Return 256 if NAME is unknown. */
4405
4406 unsigned int
4407 bfd_mach_o_get_section_type_from_name (bfd *abfd, const char *name)
4408 {
4409 const bfd_mach_o_xlat_name *x;
4410 bfd_mach_o_backend_data *bed = bfd_mach_o_get_backend_data (abfd);
4411
4412 for (x = bfd_mach_o_section_type_name; x->name; x++)
4413 if (strcmp (x->name, name) == 0)
4414 {
4415 /* We found it... does the target support it? */
4416 if (bed->bfd_mach_o_section_type_valid_for_target == NULL
4417 || bed->bfd_mach_o_section_type_valid_for_target (x->val))
4418 return x->val; /* OK. */
4419 else
4420 break; /* Not supported. */
4421 }
4422 /* Maximum section ID = 0xff. */
4423 return 256;
4424 }
4425
4426 /* Get the section attribute from NAME. Return -1 if NAME is unknown. */
4427
4428 unsigned int
4429 bfd_mach_o_get_section_attribute_from_name (const char *name)
4430 {
4431 const bfd_mach_o_xlat_name *x;
4432
4433 for (x = bfd_mach_o_section_attribute_name; x->name; x++)
4434 if (strcmp (x->name, name) == 0)
4435 return x->val;
4436 return (unsigned int)-1;
4437 }
4438
4439 int
4440 bfd_mach_o_core_fetch_environment (bfd *abfd,
4441 unsigned char **rbuf,
4442 unsigned int *rlen)
4443 {
4444 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
4445 unsigned long stackaddr = bfd_mach_o_stack_addr (mdata->header.cputype);
4446 unsigned int i = 0;
4447
4448 for (i = 0; i < mdata->header.ncmds; i++)
4449 {
4450 bfd_mach_o_load_command *cur = &mdata->commands[i];
4451 bfd_mach_o_segment_command *seg = NULL;
4452
4453 if (cur->type != BFD_MACH_O_LC_SEGMENT)
4454 continue;
4455
4456 seg = &cur->command.segment;
4457
4458 if ((seg->vmaddr + seg->vmsize) == stackaddr)
4459 {
4460 unsigned long start = seg->fileoff;
4461 unsigned long end = seg->fileoff + seg->filesize;
4462 unsigned char *buf = bfd_malloc (1024);
4463 unsigned long size = 1024;
4464
4465 for (;;)
4466 {
4467 bfd_size_type nread = 0;
4468 unsigned long offset;
4469 int found_nonnull = 0;
4470
4471 if (size > (end - start))
4472 size = (end - start);
4473
4474 buf = bfd_realloc_or_free (buf, size);
4475 if (buf == NULL)
4476 return -1;
4477
4478 if (bfd_seek (abfd, end - size, SEEK_SET) != 0)
4479 {
4480 free (buf);
4481 return -1;
4482 }
4483
4484 nread = bfd_bread (buf, size, abfd);
4485
4486 if (nread != size)
4487 {
4488 free (buf);
4489 return -1;
4490 }
4491
4492 for (offset = 4; offset <= size; offset += 4)
4493 {
4494 unsigned long val;
4495
4496 val = *((unsigned long *) (buf + size - offset));
4497 if (! found_nonnull)
4498 {
4499 if (val != 0)
4500 found_nonnull = 1;
4501 }
4502 else if (val == 0x0)
4503 {
4504 unsigned long bottom;
4505 unsigned long top;
4506
4507 bottom = seg->fileoff + seg->filesize - offset;
4508 top = seg->fileoff + seg->filesize - 4;
4509 *rbuf = bfd_malloc (top - bottom);
4510 *rlen = top - bottom;
4511
4512 memcpy (*rbuf, buf + size - *rlen, *rlen);
4513 free (buf);
4514 return 0;
4515 }
4516 }
4517
4518 if (size == (end - start))
4519 break;
4520
4521 size *= 2;
4522 }
4523
4524 free (buf);
4525 }
4526 }
4527
4528 return -1;
4529 }
4530
4531 char *
4532 bfd_mach_o_core_file_failing_command (bfd *abfd)
4533 {
4534 unsigned char *buf = NULL;
4535 unsigned int len = 0;
4536 int ret = -1;
4537
4538 ret = bfd_mach_o_core_fetch_environment (abfd, &buf, &len);
4539 if (ret < 0)
4540 return NULL;
4541
4542 return (char *) buf;
4543 }
4544
4545 int
4546 bfd_mach_o_core_file_failing_signal (bfd *abfd ATTRIBUTE_UNUSED)
4547 {
4548 return 0;
4549 }
4550
4551 static bfd_mach_o_uuid_command *
4552 bfd_mach_o_lookup_uuid_command (bfd *abfd)
4553 {
4554 bfd_mach_o_load_command *uuid_cmd;
4555 int ncmd = bfd_mach_o_lookup_command (abfd, BFD_MACH_O_LC_UUID, &uuid_cmd);
4556 if (ncmd != 1)
4557 return FALSE;
4558 return &uuid_cmd->command.uuid;
4559 }
4560
4561 /* Return true if ABFD is a dSYM file and its UUID matches UUID_CMD. */
4562
4563 static bfd_boolean
4564 bfd_mach_o_dsym_for_uuid_p (bfd *abfd, const bfd_mach_o_uuid_command *uuid_cmd)
4565 {
4566 bfd_mach_o_uuid_command *dsym_uuid_cmd;
4567
4568 BFD_ASSERT (abfd);
4569 BFD_ASSERT (uuid_cmd);
4570
4571 if (!bfd_check_format (abfd, bfd_object))
4572 return FALSE;
4573
4574 if (bfd_get_flavour (abfd) != bfd_target_mach_o_flavour
4575 || bfd_mach_o_get_data (abfd) == NULL
4576 || bfd_mach_o_get_data (abfd)->header.filetype != BFD_MACH_O_MH_DSYM)
4577 return FALSE;
4578
4579 dsym_uuid_cmd = bfd_mach_o_lookup_uuid_command (abfd);
4580 if (dsym_uuid_cmd == NULL)
4581 return FALSE;
4582
4583 if (memcmp (uuid_cmd->uuid, dsym_uuid_cmd->uuid,
4584 sizeof (uuid_cmd->uuid)) != 0)
4585 return FALSE;
4586
4587 return TRUE;
4588 }
4589
4590 /* Find a BFD in DSYM_FILENAME which matches ARCH and UUID_CMD.
4591 The caller is responsible for closing the returned BFD object and
4592 its my_archive if the returned BFD is in a fat dSYM. */
4593
4594 static bfd *
4595 bfd_mach_o_find_dsym (const char *dsym_filename,
4596 const bfd_mach_o_uuid_command *uuid_cmd,
4597 const bfd_arch_info_type *arch)
4598 {
4599 bfd *base_dsym_bfd, *dsym_bfd;
4600
4601 BFD_ASSERT (uuid_cmd);
4602
4603 base_dsym_bfd = bfd_openr (dsym_filename, NULL);
4604 if (base_dsym_bfd == NULL)
4605 return NULL;
4606
4607 dsym_bfd = bfd_mach_o_fat_extract (base_dsym_bfd, bfd_object, arch);
4608 if (bfd_mach_o_dsym_for_uuid_p (dsym_bfd, uuid_cmd))
4609 return dsym_bfd;
4610
4611 bfd_close (dsym_bfd);
4612 if (base_dsym_bfd != dsym_bfd)
4613 bfd_close (base_dsym_bfd);
4614
4615 return NULL;
4616 }
4617
4618 /* Return a BFD created from a dSYM file for ABFD.
4619 The caller is responsible for closing the returned BFD object, its
4620 filename, and its my_archive if the returned BFD is in a fat dSYM. */
4621
4622 static bfd *
4623 bfd_mach_o_follow_dsym (bfd *abfd)
4624 {
4625 char *dsym_filename;
4626 bfd_mach_o_uuid_command *uuid_cmd;
4627 bfd *dsym_bfd, *base_bfd = abfd;
4628 const char *base_basename;
4629
4630 if (abfd == NULL || bfd_get_flavour (abfd) != bfd_target_mach_o_flavour)
4631 return NULL;
4632
4633 if (abfd->my_archive)
4634 base_bfd = abfd->my_archive;
4635 /* BFD may have been opened from a stream. */
4636 if (base_bfd->filename == NULL)
4637 {
4638 bfd_set_error (bfd_error_invalid_operation);
4639 return NULL;
4640 }
4641 base_basename = lbasename (base_bfd->filename);
4642
4643 uuid_cmd = bfd_mach_o_lookup_uuid_command (abfd);
4644 if (uuid_cmd == NULL)
4645 return NULL;
4646
4647 /* TODO: We assume the DWARF file has the same as the binary's.
4648 It seems apple's GDB checks all files in the dSYM bundle directory.
4649 http://opensource.apple.com/source/gdb/gdb-1708/src/gdb/macosx/macosx-tdep.c
4650 */
4651 dsym_filename = (char *)bfd_malloc (strlen (base_bfd->filename)
4652 + strlen (dsym_subdir) + 1
4653 + strlen (base_basename) + 1);
4654 sprintf (dsym_filename, "%s%s/%s",
4655 base_bfd->filename, dsym_subdir, base_basename);
4656
4657 dsym_bfd = bfd_mach_o_find_dsym (dsym_filename, uuid_cmd,
4658 bfd_get_arch_info (abfd));
4659 if (dsym_bfd == NULL)
4660 free (dsym_filename);
4661
4662 return dsym_bfd;
4663 }
4664
4665 bfd_boolean
4666 bfd_mach_o_find_nearest_line (bfd *abfd,
4667 asection *section,
4668 asymbol **symbols,
4669 bfd_vma offset,
4670 const char **filename_ptr,
4671 const char **functionname_ptr,
4672 unsigned int *line_ptr)
4673 {
4674 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
4675 if (mdata == NULL)
4676 return FALSE;
4677 switch (mdata->header.filetype)
4678 {
4679 case BFD_MACH_O_MH_OBJECT:
4680 break;
4681 case BFD_MACH_O_MH_EXECUTE:
4682 case BFD_MACH_O_MH_DYLIB:
4683 case BFD_MACH_O_MH_BUNDLE:
4684 case BFD_MACH_O_MH_KEXT_BUNDLE:
4685 if (mdata->dwarf2_find_line_info == NULL)
4686 {
4687 mdata->dsym_bfd = bfd_mach_o_follow_dsym (abfd);
4688 /* When we couldn't find dSYM for this binary, we look for
4689 the debug information in the binary itself. In this way,
4690 we won't try finding separated dSYM again because
4691 mdata->dwarf2_find_line_info will be filled. */
4692 if (! mdata->dsym_bfd)
4693 break;
4694 if (! _bfd_dwarf2_slurp_debug_info (abfd, mdata->dsym_bfd,
4695 dwarf_debug_sections, symbols,
4696 &mdata->dwarf2_find_line_info))
4697 return FALSE;
4698 }
4699 break;
4700 default:
4701 return FALSE;
4702 }
4703 if (_bfd_dwarf2_find_nearest_line (abfd, dwarf_debug_sections,
4704 section, symbols, offset,
4705 filename_ptr, functionname_ptr,
4706 line_ptr, 0,
4707 &mdata->dwarf2_find_line_info))
4708 return TRUE;
4709 return FALSE;
4710 }
4711
4712 bfd_boolean
4713 bfd_mach_o_close_and_cleanup (bfd *abfd)
4714 {
4715 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
4716 if (bfd_get_format (abfd) == bfd_object && mdata != NULL)
4717 {
4718 _bfd_dwarf2_cleanup_debug_info (abfd, &mdata->dwarf2_find_line_info);
4719 bfd_mach_o_free_cached_info (abfd);
4720 if (mdata->dsym_bfd != NULL)
4721 {
4722 bfd *fat_bfd = mdata->dsym_bfd->my_archive;
4723 char *dsym_filename = (char *)(fat_bfd
4724 ? fat_bfd->filename
4725 : mdata->dsym_bfd->filename);
4726 bfd_close (mdata->dsym_bfd);
4727 mdata->dsym_bfd = NULL;
4728 if (fat_bfd)
4729 bfd_close (fat_bfd);
4730 free (dsym_filename);
4731 }
4732 }
4733
4734 return _bfd_generic_close_and_cleanup (abfd);
4735 }
4736
4737 bfd_boolean bfd_mach_o_free_cached_info (bfd *abfd)
4738 {
4739 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
4740 asection *asect;
4741 free (mdata->dyn_reloc_cache);
4742 mdata->dyn_reloc_cache = NULL;
4743 for (asect = abfd->sections; asect != NULL; asect = asect->next)
4744 {
4745 free (asect->relocation);
4746 asect->relocation = NULL;
4747 }
4748
4749 return TRUE;
4750 }
4751
4752 #define bfd_mach_o_bfd_reloc_type_lookup _bfd_norelocs_bfd_reloc_type_lookup
4753 #define bfd_mach_o_bfd_reloc_name_lookup _bfd_norelocs_bfd_reloc_name_lookup
4754
4755 #define bfd_mach_o_swap_reloc_in NULL
4756 #define bfd_mach_o_swap_reloc_out NULL
4757 #define bfd_mach_o_print_thread NULL
4758 #define bfd_mach_o_tgt_seg_table NULL
4759 #define bfd_mach_o_section_type_valid_for_tgt NULL
4760
4761 #define TARGET_NAME mach_o_be_vec
4762 #define TARGET_STRING "mach-o-be"
4763 #define TARGET_ARCHITECTURE bfd_arch_unknown
4764 #define TARGET_BIG_ENDIAN 1
4765 #define TARGET_ARCHIVE 0
4766 #define TARGET_PRIORITY 1
4767 #include "mach-o-target.c"
4768
4769 #undef TARGET_NAME
4770 #undef TARGET_STRING
4771 #undef TARGET_ARCHITECTURE
4772 #undef TARGET_BIG_ENDIAN
4773 #undef TARGET_ARCHIVE
4774 #undef TARGET_PRIORITY
4775
4776 #define TARGET_NAME mach_o_le_vec
4777 #define TARGET_STRING "mach-o-le"
4778 #define TARGET_ARCHITECTURE bfd_arch_unknown
4779 #define TARGET_BIG_ENDIAN 0
4780 #define TARGET_ARCHIVE 0
4781 #define TARGET_PRIORITY 1
4782
4783 #include "mach-o-target.c"
4784
4785 #undef TARGET_NAME
4786 #undef TARGET_STRING
4787 #undef TARGET_ARCHITECTURE
4788 #undef TARGET_BIG_ENDIAN
4789 #undef TARGET_ARCHIVE
4790 #undef TARGET_PRIORITY
4791
4792 /* Not yet handled: creating an archive. */
4793 #define bfd_mach_o_mkarchive _bfd_noarchive_mkarchive
4794
4795 /* Not used. */
4796 #define bfd_mach_o_read_ar_hdr _bfd_noarchive_read_ar_hdr
4797 #define bfd_mach_o_write_ar_hdr _bfd_noarchive_write_ar_hdr
4798 #define bfd_mach_o_slurp_armap _bfd_noarchive_slurp_armap
4799 #define bfd_mach_o_slurp_extended_name_table _bfd_noarchive_slurp_extended_name_table
4800 #define bfd_mach_o_construct_extended_name_table _bfd_noarchive_construct_extended_name_table
4801 #define bfd_mach_o_truncate_arname _bfd_noarchive_truncate_arname
4802 #define bfd_mach_o_write_armap _bfd_noarchive_write_armap
4803 #define bfd_mach_o_get_elt_at_index _bfd_noarchive_get_elt_at_index
4804 #define bfd_mach_o_generic_stat_arch_elt bfd_mach_o_fat_stat_arch_elt
4805 #define bfd_mach_o_update_armap_timestamp _bfd_noarchive_update_armap_timestamp
4806
4807 #define TARGET_NAME mach_o_fat_vec
4808 #define TARGET_STRING "mach-o-fat"
4809 #define TARGET_ARCHITECTURE bfd_arch_unknown
4810 #define TARGET_BIG_ENDIAN 1
4811 #define TARGET_ARCHIVE 1
4812 #define TARGET_PRIORITY 0
4813
4814 #include "mach-o-target.c"
4815
4816 #undef TARGET_NAME
4817 #undef TARGET_STRING
4818 #undef TARGET_ARCHITECTURE
4819 #undef TARGET_BIG_ENDIAN
4820 #undef TARGET_ARCHIVE
4821 #undef TARGET_PRIORITY