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add indirect_symbol to mach-o port.
[deliverable/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 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
1189 unsigned int i;
1190 arelent **entries;
1191 asection *sec;
1192 bfd_mach_o_backend_data *bed = bfd_mach_o_get_backend_data (abfd);
1193
1194 sec = section->bfdsection;
1195 if (sec->reloc_count == 0)
1196 return TRUE;
1197
1198 if (bed->_bfd_mach_o_swap_reloc_out == NULL)
1199 return TRUE;
1200
1201 /* Allocate relocation room. */
1202 mdata->filelen = FILE_ALIGN(mdata->filelen, 2);
1203 section->nreloc = sec->reloc_count;
1204 sec->rel_filepos = mdata->filelen;
1205 section->reloff = sec->rel_filepos;
1206 mdata->filelen += sec->reloc_count * BFD_MACH_O_RELENT_SIZE;
1207
1208 if (bfd_seek (abfd, section->reloff, SEEK_SET) != 0)
1209 return FALSE;
1210
1211 /* Convert and write. */
1212 entries = section->bfdsection->orelocation;
1213 for (i = 0; i < section->nreloc; i++)
1214 {
1215 arelent *rel = entries[i];
1216 struct mach_o_reloc_info_external raw;
1217 bfd_mach_o_reloc_info info, *pinfo = &info;
1218
1219 /* Convert relocation to an intermediate representation. */
1220 if (!(*bed->_bfd_mach_o_swap_reloc_out) (rel, pinfo))
1221 return FALSE;
1222
1223 /* Lower the relocation info. */
1224 if (pinfo->r_scattered)
1225 {
1226 unsigned long v;
1227
1228 v = BFD_MACH_O_SR_SCATTERED
1229 | (pinfo->r_pcrel ? BFD_MACH_O_SR_PCREL : 0)
1230 | BFD_MACH_O_SET_SR_LENGTH(pinfo->r_length)
1231 | BFD_MACH_O_SET_SR_TYPE(pinfo->r_type)
1232 | BFD_MACH_O_SET_SR_ADDRESS(pinfo->r_address);
1233 /* Note: scattered relocs have field in reverse order... */
1234 bfd_put_32 (abfd, v, raw.r_address);
1235 bfd_put_32 (abfd, pinfo->r_value, raw.r_symbolnum);
1236 }
1237 else
1238 {
1239 unsigned long v;
1240
1241 bfd_put_32 (abfd, pinfo->r_address, raw.r_address);
1242 v = BFD_MACH_O_SET_R_SYMBOLNUM (pinfo->r_value)
1243 | (pinfo->r_pcrel ? BFD_MACH_O_R_PCREL : 0)
1244 | BFD_MACH_O_SET_R_LENGTH (pinfo->r_length)
1245 | (pinfo->r_extern ? BFD_MACH_O_R_EXTERN : 0)
1246 | BFD_MACH_O_SET_R_TYPE (pinfo->r_type);
1247 bfd_put_32 (abfd, v, raw.r_symbolnum);
1248 }
1249
1250 if (bfd_bwrite (&raw, BFD_MACH_O_RELENT_SIZE, abfd)
1251 != BFD_MACH_O_RELENT_SIZE)
1252 return FALSE;
1253 }
1254 return TRUE;
1255 }
1256
1257 static int
1258 bfd_mach_o_write_section_32 (bfd *abfd, bfd_mach_o_section *section)
1259 {
1260 struct mach_o_section_32_external raw;
1261
1262 memcpy (raw.sectname, section->sectname, 16);
1263 memcpy (raw.segname, section->segname, 16);
1264 bfd_h_put_32 (abfd, section->addr, raw.addr);
1265 bfd_h_put_32 (abfd, section->size, raw.size);
1266 bfd_h_put_32 (abfd, section->offset, raw.offset);
1267 bfd_h_put_32 (abfd, section->align, raw.align);
1268 bfd_h_put_32 (abfd, section->reloff, raw.reloff);
1269 bfd_h_put_32 (abfd, section->nreloc, raw.nreloc);
1270 bfd_h_put_32 (abfd, section->flags, raw.flags);
1271 bfd_h_put_32 (abfd, section->reserved1, raw.reserved1);
1272 bfd_h_put_32 (abfd, section->reserved2, raw.reserved2);
1273
1274 if (bfd_bwrite (&raw, BFD_MACH_O_SECTION_SIZE, abfd)
1275 != BFD_MACH_O_SECTION_SIZE)
1276 return -1;
1277
1278 return 0;
1279 }
1280
1281 static int
1282 bfd_mach_o_write_section_64 (bfd *abfd, bfd_mach_o_section *section)
1283 {
1284 struct mach_o_section_64_external raw;
1285
1286 memcpy (raw.sectname, section->sectname, 16);
1287 memcpy (raw.segname, section->segname, 16);
1288 bfd_h_put_64 (abfd, section->addr, raw.addr);
1289 bfd_h_put_64 (abfd, section->size, raw.size);
1290 bfd_h_put_32 (abfd, section->offset, raw.offset);
1291 bfd_h_put_32 (abfd, section->align, raw.align);
1292 bfd_h_put_32 (abfd, section->reloff, raw.reloff);
1293 bfd_h_put_32 (abfd, section->nreloc, raw.nreloc);
1294 bfd_h_put_32 (abfd, section->flags, raw.flags);
1295 bfd_h_put_32 (abfd, section->reserved1, raw.reserved1);
1296 bfd_h_put_32 (abfd, section->reserved2, raw.reserved2);
1297 bfd_h_put_32 (abfd, section->reserved3, raw.reserved3);
1298
1299 if (bfd_bwrite (&raw, BFD_MACH_O_SECTION_64_SIZE, abfd)
1300 != BFD_MACH_O_SECTION_64_SIZE)
1301 return -1;
1302
1303 return 0;
1304 }
1305
1306 static int
1307 bfd_mach_o_write_segment_32 (bfd *abfd, bfd_mach_o_load_command *command)
1308 {
1309 struct mach_o_segment_command_32_external raw;
1310 bfd_mach_o_segment_command *seg = &command->command.segment;
1311 bfd_mach_o_section *sec;
1312
1313 BFD_ASSERT (command->type == BFD_MACH_O_LC_SEGMENT);
1314
1315 for (sec = seg->sect_head; sec != NULL; sec = sec->next)
1316 if (!bfd_mach_o_write_relocs (abfd, sec))
1317 return -1;
1318
1319 memcpy (raw.segname, seg->segname, 16);
1320 bfd_h_put_32 (abfd, seg->vmaddr, raw.vmaddr);
1321 bfd_h_put_32 (abfd, seg->vmsize, raw.vmsize);
1322 bfd_h_put_32 (abfd, seg->fileoff, raw.fileoff);
1323 bfd_h_put_32 (abfd, seg->filesize, raw.filesize);
1324 bfd_h_put_32 (abfd, seg->maxprot, raw.maxprot);
1325 bfd_h_put_32 (abfd, seg->initprot, raw.initprot);
1326 bfd_h_put_32 (abfd, seg->nsects, raw.nsects);
1327 bfd_h_put_32 (abfd, seg->flags, raw.flags);
1328
1329 if (bfd_seek (abfd, command->offset + BFD_MACH_O_LC_SIZE, SEEK_SET) != 0
1330 || bfd_bwrite (&raw, sizeof (raw), abfd) != sizeof (raw))
1331 return -1;
1332
1333 for (sec = seg->sect_head; sec != NULL; sec = sec->next)
1334 if (bfd_mach_o_write_section_32 (abfd, sec))
1335 return -1;
1336
1337 return 0;
1338 }
1339
1340 static int
1341 bfd_mach_o_write_segment_64 (bfd *abfd, bfd_mach_o_load_command *command)
1342 {
1343 struct mach_o_segment_command_64_external raw;
1344 bfd_mach_o_segment_command *seg = &command->command.segment;
1345 bfd_mach_o_section *sec;
1346
1347 BFD_ASSERT (command->type == BFD_MACH_O_LC_SEGMENT_64);
1348
1349 for (sec = seg->sect_head; sec != NULL; sec = sec->next)
1350 if (!bfd_mach_o_write_relocs (abfd, sec))
1351 return -1;
1352
1353 memcpy (raw.segname, seg->segname, 16);
1354 bfd_h_put_64 (abfd, seg->vmaddr, raw.vmaddr);
1355 bfd_h_put_64 (abfd, seg->vmsize, raw.vmsize);
1356 bfd_h_put_64 (abfd, seg->fileoff, raw.fileoff);
1357 bfd_h_put_64 (abfd, seg->filesize, raw.filesize);
1358 bfd_h_put_32 (abfd, seg->maxprot, raw.maxprot);
1359 bfd_h_put_32 (abfd, seg->initprot, raw.initprot);
1360 bfd_h_put_32 (abfd, seg->nsects, raw.nsects);
1361 bfd_h_put_32 (abfd, seg->flags, raw.flags);
1362
1363 if (bfd_seek (abfd, command->offset + BFD_MACH_O_LC_SIZE, SEEK_SET) != 0
1364 || bfd_bwrite (&raw, sizeof (raw), abfd) != sizeof (raw))
1365 return -1;
1366
1367 for (sec = seg->sect_head; sec != NULL; sec = sec->next)
1368 if (bfd_mach_o_write_section_64 (abfd, sec))
1369 return -1;
1370
1371 return 0;
1372 }
1373
1374 static bfd_boolean
1375 bfd_mach_o_write_symtab (bfd *abfd, bfd_mach_o_load_command *command)
1376 {
1377 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
1378 bfd_mach_o_symtab_command *sym = &command->command.symtab;
1379 unsigned long i;
1380 unsigned int wide = bfd_mach_o_wide_p (abfd);
1381 unsigned int symlen = wide ? BFD_MACH_O_NLIST_64_SIZE : BFD_MACH_O_NLIST_SIZE;
1382 struct bfd_strtab_hash *strtab;
1383 asymbol **symbols = bfd_get_outsymbols (abfd);
1384
1385 BFD_ASSERT (command->type == BFD_MACH_O_LC_SYMTAB);
1386
1387 /* Write the symbols first. */
1388 mdata->filelen = FILE_ALIGN(mdata->filelen, wide ? 3 : 2);
1389 sym->symoff = mdata->filelen;
1390 if (bfd_seek (abfd, sym->symoff, SEEK_SET) != 0)
1391 return FALSE;
1392
1393 sym->nsyms = bfd_get_symcount (abfd);
1394 mdata->filelen += sym->nsyms * symlen;
1395
1396 strtab = _bfd_stringtab_init ();
1397 if (strtab == NULL)
1398 return FALSE;
1399
1400 if (sym->nsyms > 0)
1401 /* Although we don't strictly need to do this, for compatibility with
1402 Darwin system tools, actually output an empty string for the index
1403 0 entry. */
1404 _bfd_stringtab_add (strtab, "", TRUE, FALSE);
1405
1406 for (i = 0; i < sym->nsyms; i++)
1407 {
1408 bfd_size_type str_index;
1409 bfd_mach_o_asymbol *s = (bfd_mach_o_asymbol *)symbols[i];
1410
1411 if (s->symbol.name == 0 || s->symbol.name[0] == '\0')
1412 /* An index of 0 always means the empty string. */
1413 str_index = 0;
1414 else
1415 {
1416 str_index = _bfd_stringtab_add (strtab, s->symbol.name, TRUE, FALSE);
1417
1418 if (str_index == (bfd_size_type) -1)
1419 goto err;
1420 }
1421
1422 if (wide)
1423 {
1424 struct mach_o_nlist_64_external raw;
1425
1426 bfd_h_put_32 (abfd, str_index, raw.n_strx);
1427 bfd_h_put_8 (abfd, s->n_type, raw.n_type);
1428 bfd_h_put_8 (abfd, s->n_sect, raw.n_sect);
1429 bfd_h_put_16 (abfd, s->n_desc, raw.n_desc);
1430 bfd_h_put_64 (abfd, s->symbol.section->vma + s->symbol.value,
1431 raw.n_value);
1432
1433 if (bfd_bwrite (&raw, sizeof (raw), abfd) != sizeof (raw))
1434 goto err;
1435 }
1436 else
1437 {
1438 struct mach_o_nlist_external raw;
1439
1440 bfd_h_put_32 (abfd, str_index, raw.n_strx);
1441 bfd_h_put_8 (abfd, s->n_type, raw.n_type);
1442 bfd_h_put_8 (abfd, s->n_sect, raw.n_sect);
1443 bfd_h_put_16 (abfd, s->n_desc, raw.n_desc);
1444 bfd_h_put_32 (abfd, s->symbol.section->vma + s->symbol.value,
1445 raw.n_value);
1446
1447 if (bfd_bwrite (&raw, sizeof (raw), abfd) != sizeof (raw))
1448 goto err;
1449 }
1450 }
1451 sym->strsize = _bfd_stringtab_size (strtab);
1452 sym->stroff = mdata->filelen;
1453 mdata->filelen += sym->strsize;
1454
1455 if (_bfd_stringtab_emit (abfd, strtab) != TRUE)
1456 goto err;
1457 _bfd_stringtab_free (strtab);
1458
1459 /* The command. */
1460 {
1461 struct mach_o_symtab_command_external raw;
1462
1463 bfd_h_put_32 (abfd, sym->symoff, raw.symoff);
1464 bfd_h_put_32 (abfd, sym->nsyms, raw.nsyms);
1465 bfd_h_put_32 (abfd, sym->stroff, raw.stroff);
1466 bfd_h_put_32 (abfd, sym->strsize, raw.strsize);
1467
1468 if (bfd_seek (abfd, command->offset + BFD_MACH_O_LC_SIZE, SEEK_SET) != 0
1469 || bfd_bwrite (&raw, sizeof (raw), abfd) != sizeof (raw))
1470 return FALSE;
1471 }
1472
1473 return TRUE;
1474
1475 err:
1476 _bfd_stringtab_free (strtab);
1477 return FALSE;
1478 }
1479
1480 /* Write a dysymtab command.
1481 TODO: Possibly coalesce writes of smaller objects. */
1482
1483 static bfd_boolean
1484 bfd_mach_o_write_dysymtab (bfd *abfd, bfd_mach_o_load_command *command)
1485 {
1486 bfd_mach_o_dysymtab_command *cmd = &command->command.dysymtab;
1487
1488 BFD_ASSERT (command->type == BFD_MACH_O_LC_DYSYMTAB);
1489
1490 if (cmd->nmodtab != 0)
1491 {
1492 unsigned int i;
1493
1494 if (bfd_seek (abfd, cmd->modtaboff, SEEK_SET) != 0)
1495 return FALSE;
1496
1497 for (i = 0; i < cmd->nmodtab; i++)
1498 {
1499 bfd_mach_o_dylib_module *module = &cmd->dylib_module[i];
1500 unsigned int iinit;
1501 unsigned int ninit;
1502
1503 iinit = module->iinit & 0xffff;
1504 iinit |= ((module->iterm & 0xffff) << 16);
1505
1506 ninit = module->ninit & 0xffff;
1507 ninit |= ((module->nterm & 0xffff) << 16);
1508
1509 if (bfd_mach_o_wide_p (abfd))
1510 {
1511 struct mach_o_dylib_module_64_external w;
1512
1513 bfd_h_put_32 (abfd, module->module_name_idx, &w.module_name);
1514 bfd_h_put_32 (abfd, module->iextdefsym, &w.iextdefsym);
1515 bfd_h_put_32 (abfd, module->nextdefsym, &w.nextdefsym);
1516 bfd_h_put_32 (abfd, module->irefsym, &w.irefsym);
1517 bfd_h_put_32 (abfd, module->nrefsym, &w.nrefsym);
1518 bfd_h_put_32 (abfd, module->ilocalsym, &w.ilocalsym);
1519 bfd_h_put_32 (abfd, module->nlocalsym, &w.nlocalsym);
1520 bfd_h_put_32 (abfd, module->iextrel, &w.iextrel);
1521 bfd_h_put_32 (abfd, module->nextrel, &w.nextrel);
1522 bfd_h_put_32 (abfd, iinit, &w.iinit_iterm);
1523 bfd_h_put_32 (abfd, ninit, &w.ninit_nterm);
1524 bfd_h_put_64 (abfd, module->objc_module_info_addr,
1525 &w.objc_module_info_addr);
1526 bfd_h_put_32 (abfd, module->objc_module_info_size,
1527 &w.objc_module_info_size);
1528
1529 if (bfd_bwrite ((void *) &w, sizeof (w), abfd) != sizeof (w))
1530 return FALSE;
1531 }
1532 else
1533 {
1534 struct mach_o_dylib_module_external n;
1535
1536 bfd_h_put_32 (abfd, module->module_name_idx, &n.module_name);
1537 bfd_h_put_32 (abfd, module->iextdefsym, &n.iextdefsym);
1538 bfd_h_put_32 (abfd, module->nextdefsym, &n.nextdefsym);
1539 bfd_h_put_32 (abfd, module->irefsym, &n.irefsym);
1540 bfd_h_put_32 (abfd, module->nrefsym, &n.nrefsym);
1541 bfd_h_put_32 (abfd, module->ilocalsym, &n.ilocalsym);
1542 bfd_h_put_32 (abfd, module->nlocalsym, &n.nlocalsym);
1543 bfd_h_put_32 (abfd, module->iextrel, &n.iextrel);
1544 bfd_h_put_32 (abfd, module->nextrel, &n.nextrel);
1545 bfd_h_put_32 (abfd, iinit, &n.iinit_iterm);
1546 bfd_h_put_32 (abfd, ninit, &n.ninit_nterm);
1547 bfd_h_put_32 (abfd, module->objc_module_info_addr,
1548 &n.objc_module_info_addr);
1549 bfd_h_put_32 (abfd, module->objc_module_info_size,
1550 &n.objc_module_info_size);
1551
1552 if (bfd_bwrite ((void *) &n, sizeof (n), abfd) != sizeof (n))
1553 return FALSE;
1554 }
1555 }
1556 }
1557
1558 if (cmd->ntoc != 0)
1559 {
1560 unsigned int i;
1561
1562 if (bfd_seek (abfd, cmd->tocoff, SEEK_SET) != 0)
1563 return FALSE;
1564
1565 for (i = 0; i < cmd->ntoc; i++)
1566 {
1567 struct mach_o_dylib_table_of_contents_external raw;
1568 bfd_mach_o_dylib_table_of_content *toc = &cmd->dylib_toc[i];
1569
1570 bfd_h_put_32 (abfd, toc->symbol_index, &raw.symbol_index);
1571 bfd_h_put_32 (abfd, toc->module_index, &raw.module_index);
1572
1573 if (bfd_bwrite (&raw, sizeof (raw), abfd) != sizeof (raw))
1574 return FALSE;
1575 }
1576 }
1577
1578 if (cmd->nindirectsyms > 0)
1579 {
1580 unsigned int i;
1581
1582 if (bfd_seek (abfd, cmd->indirectsymoff, SEEK_SET) != 0)
1583 return FALSE;
1584
1585 for (i = 0; i < cmd->nindirectsyms; ++i)
1586 {
1587 unsigned char raw[4];
1588
1589 bfd_h_put_32 (abfd, cmd->indirect_syms[i], &raw);
1590 if (bfd_bwrite (raw, sizeof (raw), abfd) != sizeof (raw))
1591 return FALSE;
1592 }
1593 }
1594
1595 if (cmd->nextrefsyms != 0)
1596 {
1597 unsigned int i;
1598
1599 if (bfd_seek (abfd, cmd->extrefsymoff, SEEK_SET) != 0)
1600 return FALSE;
1601
1602 for (i = 0; i < cmd->nextrefsyms; i++)
1603 {
1604 unsigned long v;
1605 unsigned char raw[4];
1606 bfd_mach_o_dylib_reference *ref = &cmd->ext_refs[i];
1607
1608 /* Fields isym and flags are written as bit-fields, thus we need
1609 a specific processing for endianness. */
1610
1611 if (bfd_big_endian (abfd))
1612 {
1613 v = ((ref->isym & 0xffffff) << 8);
1614 v |= ref->flags & 0xff;
1615 }
1616 else
1617 {
1618 v = ref->isym & 0xffffff;
1619 v |= ((ref->flags & 0xff) << 24);
1620 }
1621
1622 bfd_h_put_32 (abfd, v, raw);
1623 if (bfd_bwrite (raw, sizeof (raw), abfd) != sizeof (raw))
1624 return FALSE;
1625 }
1626 }
1627
1628 /* The command. */
1629 if (bfd_seek (abfd, command->offset + BFD_MACH_O_LC_SIZE, SEEK_SET) != 0)
1630 return FALSE;
1631 else
1632 {
1633 struct mach_o_dysymtab_command_external raw;
1634
1635 bfd_h_put_32 (abfd, cmd->ilocalsym, &raw.ilocalsym);
1636 bfd_h_put_32 (abfd, cmd->nlocalsym, &raw.nlocalsym);
1637 bfd_h_put_32 (abfd, cmd->iextdefsym, &raw.iextdefsym);
1638 bfd_h_put_32 (abfd, cmd->nextdefsym, &raw.nextdefsym);
1639 bfd_h_put_32 (abfd, cmd->iundefsym, &raw.iundefsym);
1640 bfd_h_put_32 (abfd, cmd->nundefsym, &raw.nundefsym);
1641 bfd_h_put_32 (abfd, cmd->tocoff, &raw.tocoff);
1642 bfd_h_put_32 (abfd, cmd->ntoc, &raw.ntoc);
1643 bfd_h_put_32 (abfd, cmd->modtaboff, &raw.modtaboff);
1644 bfd_h_put_32 (abfd, cmd->nmodtab, &raw.nmodtab);
1645 bfd_h_put_32 (abfd, cmd->extrefsymoff, &raw.extrefsymoff);
1646 bfd_h_put_32 (abfd, cmd->nextrefsyms, &raw.nextrefsyms);
1647 bfd_h_put_32 (abfd, cmd->indirectsymoff, &raw.indirectsymoff);
1648 bfd_h_put_32 (abfd, cmd->nindirectsyms, &raw.nindirectsyms);
1649 bfd_h_put_32 (abfd, cmd->extreloff, &raw.extreloff);
1650 bfd_h_put_32 (abfd, cmd->nextrel, &raw.nextrel);
1651 bfd_h_put_32 (abfd, cmd->locreloff, &raw.locreloff);
1652 bfd_h_put_32 (abfd, cmd->nlocrel, &raw.nlocrel);
1653
1654 if (bfd_bwrite (&raw, sizeof (raw), abfd) != sizeof (raw))
1655 return FALSE;
1656 }
1657
1658 return TRUE;
1659 }
1660
1661 static unsigned
1662 bfd_mach_o_primary_symbol_sort_key (bfd_mach_o_asymbol *s)
1663 {
1664 unsigned mtyp = s->n_type & BFD_MACH_O_N_TYPE;
1665
1666 /* Just leave debug symbols where they are (pretend they are local, and
1667 then they will just be sorted on position). */
1668 if (s->n_type & BFD_MACH_O_N_STAB)
1669 return 0;
1670
1671 /* Local (we should never see an undefined local AFAICT). */
1672 if (! (s->n_type & (BFD_MACH_O_N_EXT | BFD_MACH_O_N_PEXT)))
1673 return 0;
1674
1675 /* Common symbols look like undefined externs. */
1676 if (mtyp == BFD_MACH_O_N_UNDF)
1677 return 2;
1678
1679 /* A defined non-local, non-debug symbol. */
1680 return 1;
1681 }
1682
1683 static int
1684 bfd_mach_o_cf_symbols (const void *a, const void *b)
1685 {
1686 bfd_mach_o_asymbol *sa = *(bfd_mach_o_asymbol **) a;
1687 bfd_mach_o_asymbol *sb = *(bfd_mach_o_asymbol **) b;
1688 unsigned int soa, sob;
1689
1690 soa = bfd_mach_o_primary_symbol_sort_key (sa);
1691 sob = bfd_mach_o_primary_symbol_sort_key (sb);
1692 if (soa < sob)
1693 return -1;
1694
1695 if (soa > sob)
1696 return 1;
1697
1698 /* If it's local or stab, just preserve the input order. */
1699 if (soa == 0)
1700 {
1701 if (sa->symbol.udata.i < sb->symbol.udata.i)
1702 return -1;
1703 if (sa->symbol.udata.i > sb->symbol.udata.i)
1704 return 1;
1705
1706 /* This is probably an error. */
1707 return 0;
1708 }
1709
1710 /* The second sort key is name. */
1711 return strcmp (sa->symbol.name, sb->symbol.name);
1712 }
1713
1714 /* Process the symbols.
1715
1716 This should be OK for single-module files - but it is not likely to work
1717 for multi-module shared libraries.
1718
1719 (a) If the application has not filled in the relevant mach-o fields, make
1720 an estimate.
1721
1722 (b) Order them, like this:
1723 ( i) local.
1724 (unsorted)
1725 ( ii) external defined
1726 (by name)
1727 (iii) external undefined/common
1728 (by name)
1729 ( iv) common
1730 (by name)
1731 */
1732
1733 static bfd_boolean
1734 bfd_mach_o_mangle_symbols (bfd *abfd)
1735 {
1736 unsigned long i;
1737 asymbol **symbols = bfd_get_outsymbols (abfd);
1738
1739 if (symbols == NULL || bfd_get_symcount (abfd) == 0)
1740 return TRUE;
1741
1742 for (i = 0; i < bfd_get_symcount (abfd); i++)
1743 {
1744 bfd_mach_o_asymbol *s = (bfd_mach_o_asymbol *)symbols[i];
1745
1746 /* We use this value, which is out-of-range as a symbol index, to signal
1747 that the mach-o-specific data are not filled in and need to be created
1748 from the bfd values. It is much preferable for the application to do
1749 this, since more meaningful diagnostics can be made that way. */
1750
1751 if (s->symbol.udata.i == SYM_MACHO_FIELDS_UNSET)
1752 {
1753 /* No symbol information has been set - therefore determine
1754 it from the bfd symbol flags/info. */
1755 if (s->symbol.section == bfd_abs_section_ptr)
1756 s->n_type = BFD_MACH_O_N_ABS;
1757 else if (s->symbol.section == bfd_und_section_ptr)
1758 {
1759 s->n_type = BFD_MACH_O_N_UNDF;
1760 if (s->symbol.flags & BSF_WEAK)
1761 s->n_desc |= BFD_MACH_O_N_WEAK_REF;
1762 /* mach-o automatically makes undefined symbols extern. */
1763 s->n_type |= BFD_MACH_O_N_EXT;
1764 s->symbol.flags |= BSF_GLOBAL;
1765 }
1766 else if (s->symbol.section == bfd_com_section_ptr)
1767 {
1768 s->n_type = BFD_MACH_O_N_UNDF | BFD_MACH_O_N_EXT;
1769 s->symbol.flags |= BSF_GLOBAL;
1770 }
1771 else
1772 s->n_type = BFD_MACH_O_N_SECT;
1773
1774 if (s->symbol.flags & BSF_GLOBAL)
1775 s->n_type |= BFD_MACH_O_N_EXT;
1776 }
1777
1778 /* Put the section index in, where required. */
1779 if ((s->symbol.section != bfd_abs_section_ptr
1780 && s->symbol.section != bfd_und_section_ptr
1781 && s->symbol.section != bfd_com_section_ptr)
1782 || ((s->n_type & BFD_MACH_O_N_STAB) != 0
1783 && s->symbol.name == NULL))
1784 s->n_sect = s->symbol.section->target_index;
1785
1786 /* Number to preserve order for local and debug syms. */
1787 s->symbol.udata.i = i;
1788 }
1789
1790 /* Sort the symbols. */
1791 qsort ((void *) symbols, (size_t) bfd_get_symcount (abfd),
1792 sizeof (asymbol *), bfd_mach_o_cf_symbols);
1793
1794 for (i = 0; i < bfd_get_symcount (abfd); ++i)
1795 {
1796 bfd_mach_o_asymbol *s = (bfd_mach_o_asymbol *)symbols[i];
1797 s->symbol.udata.i = i; /* renumber. */
1798 }
1799
1800 return TRUE;
1801 }
1802
1803 /* We build a flat table of sections, which can be re-ordered if necessary.
1804 Fill in the section number and other mach-o-specific data. */
1805
1806 static bfd_boolean
1807 bfd_mach_o_mangle_sections (bfd *abfd, bfd_mach_o_data_struct *mdata)
1808 {
1809 asection *sec;
1810 unsigned target_index;
1811 unsigned nsect;
1812
1813 nsect = bfd_count_sections (abfd);
1814
1815 /* Don't do it if it's already set - assume the application knows what it's
1816 doing. */
1817 if (mdata->nsects == nsect
1818 && (mdata->nsects == 0 || mdata->sections != NULL))
1819 return TRUE;
1820
1821 mdata->nsects = nsect;
1822 mdata->sections = bfd_alloc (abfd,
1823 mdata->nsects * sizeof (bfd_mach_o_section *));
1824 if (mdata->sections == NULL)
1825 return FALSE;
1826
1827 /* We need to check that this can be done... */
1828 if (nsect > 255)
1829 (*_bfd_error_handler) (_("mach-o: there are too many sections (%d)"
1830 " maximum is 255,\n"), nsect);
1831
1832 /* Create Mach-O sections.
1833 Section type, attribute and align should have been set when the
1834 section was created - either read in or specified. */
1835 target_index = 0;
1836 for (sec = abfd->sections; sec; sec = sec->next)
1837 {
1838 unsigned bfd_align = bfd_get_section_alignment (abfd, sec);
1839 bfd_mach_o_section *msect = bfd_mach_o_get_mach_o_section (sec);
1840
1841 mdata->sections[target_index] = msect;
1842
1843 msect->addr = bfd_get_section_vma (abfd, sec);
1844 msect->size = bfd_get_section_size (sec);
1845
1846 /* Use the largest alignment set, in case it was bumped after the
1847 section was created. */
1848 msect->align = msect->align > bfd_align ? msect->align : bfd_align;
1849
1850 msect->offset = 0;
1851 sec->target_index = ++target_index;
1852 }
1853
1854 return TRUE;
1855 }
1856
1857 bfd_boolean
1858 bfd_mach_o_write_contents (bfd *abfd)
1859 {
1860 unsigned int i;
1861 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
1862
1863 /* Make the commands, if not already present. */
1864 if (mdata->header.ncmds == 0)
1865 if (!bfd_mach_o_build_commands (abfd))
1866 return FALSE;
1867
1868 if (!bfd_mach_o_write_header (abfd, &mdata->header))
1869 return FALSE;
1870
1871 for (i = 0; i < mdata->header.ncmds; i++)
1872 {
1873 struct mach_o_load_command_external raw;
1874 bfd_mach_o_load_command *cur = &mdata->commands[i];
1875 unsigned long typeflag;
1876
1877 typeflag = cur->type | (cur->type_required ? BFD_MACH_O_LC_REQ_DYLD : 0);
1878
1879 bfd_h_put_32 (abfd, typeflag, raw.cmd);
1880 bfd_h_put_32 (abfd, cur->len, raw.cmdsize);
1881
1882 if (bfd_seek (abfd, cur->offset, SEEK_SET) != 0
1883 || bfd_bwrite (&raw, BFD_MACH_O_LC_SIZE, abfd) != 8)
1884 return FALSE;
1885
1886 switch (cur->type)
1887 {
1888 case BFD_MACH_O_LC_SEGMENT:
1889 if (bfd_mach_o_write_segment_32 (abfd, cur) != 0)
1890 return FALSE;
1891 break;
1892 case BFD_MACH_O_LC_SEGMENT_64:
1893 if (bfd_mach_o_write_segment_64 (abfd, cur) != 0)
1894 return FALSE;
1895 break;
1896 case BFD_MACH_O_LC_SYMTAB:
1897 if (!bfd_mach_o_write_symtab (abfd, cur))
1898 return FALSE;
1899 break;
1900 case BFD_MACH_O_LC_DYSYMTAB:
1901 if (!bfd_mach_o_write_dysymtab (abfd, cur))
1902 return FALSE;
1903 break;
1904 case BFD_MACH_O_LC_SYMSEG:
1905 break;
1906 case BFD_MACH_O_LC_THREAD:
1907 case BFD_MACH_O_LC_UNIXTHREAD:
1908 if (bfd_mach_o_write_thread (abfd, cur) != 0)
1909 return FALSE;
1910 break;
1911 case BFD_MACH_O_LC_LOADFVMLIB:
1912 case BFD_MACH_O_LC_IDFVMLIB:
1913 case BFD_MACH_O_LC_IDENT:
1914 case BFD_MACH_O_LC_FVMFILE:
1915 case BFD_MACH_O_LC_PREPAGE:
1916 case BFD_MACH_O_LC_LOAD_DYLIB:
1917 case BFD_MACH_O_LC_LOAD_WEAK_DYLIB:
1918 case BFD_MACH_O_LC_ID_DYLIB:
1919 case BFD_MACH_O_LC_REEXPORT_DYLIB:
1920 case BFD_MACH_O_LC_LOAD_UPWARD_DYLIB:
1921 case BFD_MACH_O_LC_LOAD_DYLINKER:
1922 case BFD_MACH_O_LC_ID_DYLINKER:
1923 case BFD_MACH_O_LC_PREBOUND_DYLIB:
1924 case BFD_MACH_O_LC_ROUTINES:
1925 case BFD_MACH_O_LC_SUB_FRAMEWORK:
1926 break;
1927 default:
1928 (*_bfd_error_handler) (_("unable to write unknown load command 0x%lx"),
1929 (unsigned long) cur->type);
1930 return FALSE;
1931 }
1932 }
1933
1934 return TRUE;
1935 }
1936
1937 static void
1938 bfd_mach_o_append_section_to_segment (bfd_mach_o_segment_command *seg,
1939 asection *sec)
1940 {
1941 bfd_mach_o_section *s = (bfd_mach_o_section *)sec->used_by_bfd;
1942 if (seg->sect_head == NULL)
1943 seg->sect_head = s;
1944 else
1945 seg->sect_tail->next = s;
1946 seg->sect_tail = s;
1947 }
1948
1949 /* Create section Mach-O flags from BFD flags. */
1950
1951 static void
1952 bfd_mach_o_set_section_flags_from_bfd (bfd *abfd ATTRIBUTE_UNUSED, asection *sec)
1953 {
1954 flagword bfd_flags;
1955 bfd_mach_o_section *s = bfd_mach_o_get_mach_o_section (sec);
1956
1957 /* Create default flags. */
1958 bfd_flags = bfd_get_section_flags (abfd, sec);
1959 if ((bfd_flags & SEC_CODE) == SEC_CODE)
1960 s->flags = BFD_MACH_O_S_ATTR_PURE_INSTRUCTIONS
1961 | BFD_MACH_O_S_ATTR_SOME_INSTRUCTIONS
1962 | BFD_MACH_O_S_REGULAR;
1963 else if ((bfd_flags & (SEC_ALLOC | SEC_LOAD)) == SEC_ALLOC)
1964 s->flags = BFD_MACH_O_S_ZEROFILL;
1965 else if (bfd_flags & SEC_DEBUGGING)
1966 s->flags = BFD_MACH_O_S_REGULAR | BFD_MACH_O_S_ATTR_DEBUG;
1967 else
1968 s->flags = BFD_MACH_O_S_REGULAR;
1969 }
1970
1971 /* Count the number of sections in the list for the segment named.
1972
1973 The special case of NULL or "" for the segment name is valid for
1974 an MH_OBJECT file and means 'all sections available'.
1975
1976 Requires that the sections table in mdata be filled in.
1977
1978 Returns the number of sections (0 is valid).
1979 Any number > 255 signals an invalid section count, although we will,
1980 perhaps, allow the file to be written (in line with Darwin tools up
1981 to XCode 4).
1982
1983 A section count of (unsigned long) -1 signals a definite error. */
1984
1985 static unsigned long
1986 bfd_mach_o_count_sections_for_seg (const char *segment,
1987 bfd_mach_o_data_struct *mdata)
1988 {
1989 unsigned i,j;
1990 if (mdata == NULL || mdata->sections == NULL)
1991 return (unsigned long) -1;
1992
1993 /* The MH_OBJECT case, all sections are considered; Although nsects is
1994 is an unsigned long, the maximum valid section count is 255 and this
1995 will have been checked already by mangle_sections. */
1996 if (segment == NULL || segment[0] == '\0')
1997 return mdata->nsects;
1998
1999 /* Count the number of sections we see in this segment. */
2000 j = 0;
2001 for (i = 0; i < mdata->nsects; ++i)
2002 {
2003 bfd_mach_o_section *s = mdata->sections[i];
2004 if (strncmp (segment, s->segname, BFD_MACH_O_SEGNAME_SIZE) == 0)
2005 j++;
2006 }
2007 return j;
2008 }
2009
2010 static bfd_boolean
2011 bfd_mach_o_build_seg_command (const char *segment,
2012 bfd_mach_o_data_struct *mdata,
2013 bfd_mach_o_segment_command *seg)
2014 {
2015 unsigned i;
2016 int is_mho = (segment == NULL || segment[0] == '\0');
2017
2018 /* Fill segment command. */
2019 if (is_mho)
2020 memset (seg->segname, 0, sizeof (seg->segname));
2021 else
2022 strncpy (seg->segname, segment, sizeof (seg->segname));
2023
2024 /* TODO: fix this up for non-MH_OBJECT cases. */
2025 seg->vmaddr = 0;
2026 seg->vmsize = 0;
2027
2028 seg->fileoff = mdata->filelen;
2029 seg->filesize = 0;
2030 seg->maxprot = BFD_MACH_O_PROT_READ | BFD_MACH_O_PROT_WRITE
2031 | BFD_MACH_O_PROT_EXECUTE;
2032 seg->initprot = seg->maxprot;
2033 seg->flags = 0;
2034 seg->sect_head = NULL;
2035 seg->sect_tail = NULL;
2036
2037 /* Append sections to the segment. */
2038
2039 for (i = 0; i < mdata->nsects; ++i)
2040 {
2041 bfd_mach_o_section *s = mdata->sections[i];
2042 asection *sec = s->bfdsection;
2043
2044 /* If we're not making an MH_OBJECT, check whether this section is from
2045 our segment, and skip if not. Otherwise, just add all sections. */
2046 if (! is_mho
2047 && strncmp (segment, s->segname, BFD_MACH_O_SEGNAME_SIZE) != 0)
2048 continue;
2049
2050 bfd_mach_o_append_section_to_segment (seg, sec);
2051
2052 s->offset = 0;
2053 if (s->size > 0)
2054 {
2055 seg->vmsize = FILE_ALIGN (seg->vmsize, s->align);
2056 seg->vmsize += s->size;
2057 }
2058
2059 /* Zerofill sections have zero file size & offset,
2060 and are not written. */
2061 if ((s->flags & BFD_MACH_O_SECTION_TYPE_MASK) == BFD_MACH_O_S_ZEROFILL
2062 || (s->flags & BFD_MACH_O_SECTION_TYPE_MASK)
2063 == BFD_MACH_O_S_GB_ZEROFILL)
2064 continue;
2065
2066 if (s->size > 0)
2067 {
2068 mdata->filelen = FILE_ALIGN (mdata->filelen, s->align);
2069 s->offset = mdata->filelen;
2070 }
2071
2072 sec->filepos = s->offset;
2073
2074 mdata->filelen += s->size;
2075 }
2076
2077 seg->filesize = mdata->filelen - seg->fileoff;
2078
2079 return TRUE;
2080 }
2081
2082 /* Count the number of indirect symbols in the image.
2083 Requires that the sections are in their final order. */
2084
2085 static unsigned int
2086 bfd_mach_o_count_indirect_symbols (bfd *abfd, bfd_mach_o_data_struct *mdata)
2087 {
2088 unsigned int i;
2089 unsigned int nisyms = 0;
2090
2091 for (i = 0; i < mdata->nsects; ++i)
2092 {
2093 bfd_mach_o_section *sec = mdata->sections[i];
2094
2095 switch (sec->flags & BFD_MACH_O_SECTION_TYPE_MASK)
2096 {
2097 case BFD_MACH_O_S_NON_LAZY_SYMBOL_POINTERS:
2098 case BFD_MACH_O_S_LAZY_SYMBOL_POINTERS:
2099 case BFD_MACH_O_S_SYMBOL_STUBS:
2100 nisyms += bfd_mach_o_section_get_nbr_indirect (abfd, sec);
2101 break;
2102 default:
2103 break;
2104 }
2105 }
2106 return nisyms;
2107 }
2108
2109 static bfd_boolean
2110 bfd_mach_o_build_dysymtab_command (bfd *abfd,
2111 bfd_mach_o_data_struct *mdata,
2112 bfd_mach_o_load_command *cmd)
2113 {
2114 bfd_mach_o_dysymtab_command *dsym = &cmd->command.dysymtab;
2115
2116 /* TODO:
2117 We are not going to try and fill these in yet and, moreover, we are
2118 going to bail if they are already set. */
2119 if (dsym->nmodtab != 0
2120 || dsym->ntoc != 0
2121 || dsym->nextrefsyms != 0)
2122 {
2123 (*_bfd_error_handler) (_("sorry: modtab, toc and extrefsyms are not yet"
2124 " implemented for dysymtab commands."));
2125 return FALSE;
2126 }
2127
2128 dsym->ilocalsym = 0;
2129
2130 if (bfd_get_symcount (abfd) > 0)
2131 {
2132 asymbol **symbols = bfd_get_outsymbols (abfd);
2133 unsigned long i;
2134
2135 /* Count the number of each kind of symbol. */
2136 for (i = 0; i < bfd_get_symcount (abfd); ++i)
2137 {
2138 bfd_mach_o_asymbol *s = (bfd_mach_o_asymbol *)symbols[i];
2139 if (s->n_type & (BFD_MACH_O_N_EXT | BFD_MACH_O_N_PEXT))
2140 break;
2141 }
2142 dsym->nlocalsym = i;
2143 dsym->iextdefsym = i;
2144 for (; i < bfd_get_symcount (abfd); ++i)
2145 {
2146 bfd_mach_o_asymbol *s = (bfd_mach_o_asymbol *)symbols[i];
2147 if ((s->n_type & BFD_MACH_O_N_TYPE) == BFD_MACH_O_N_UNDF)
2148 break;
2149 }
2150 dsym->nextdefsym = i - dsym->nlocalsym;
2151 dsym->iundefsym = dsym->nextdefsym + dsym->iextdefsym;
2152 dsym->nundefsym = bfd_get_symcount (abfd)
2153 - dsym->nlocalsym
2154 - dsym->nextdefsym;
2155 }
2156 else
2157 {
2158 dsym->nlocalsym = 0;
2159 dsym->iextdefsym = 0;
2160 dsym->nextdefsym = 0;
2161 dsym->iundefsym = 0;
2162 dsym->nundefsym = 0;
2163 }
2164
2165 dsym->nindirectsyms = bfd_mach_o_count_indirect_symbols (abfd, mdata);
2166 if (dsym->nindirectsyms > 0)
2167 {
2168 unsigned i;
2169 unsigned n;
2170
2171 mdata->filelen = FILE_ALIGN (mdata->filelen, 2);
2172 dsym->indirectsymoff = mdata->filelen;
2173 mdata->filelen += dsym->nindirectsyms * 4;
2174
2175 dsym->indirect_syms = bfd_zalloc (abfd, dsym->nindirectsyms * 4);
2176 if (dsym->indirect_syms == NULL)
2177 return FALSE;
2178
2179 n = 0;
2180 for (i = 0; i < mdata->nsects; ++i)
2181 {
2182 bfd_mach_o_section *sec = mdata->sections[i];
2183
2184 switch (sec->flags & BFD_MACH_O_SECTION_TYPE_MASK)
2185 {
2186 case BFD_MACH_O_S_NON_LAZY_SYMBOL_POINTERS:
2187 case BFD_MACH_O_S_LAZY_SYMBOL_POINTERS:
2188 case BFD_MACH_O_S_SYMBOL_STUBS:
2189 {
2190 unsigned j, num;
2191 bfd_mach_o_asymbol **isyms = sec->indirect_syms;
2192
2193 num = bfd_mach_o_section_get_nbr_indirect (abfd, sec);
2194 if (isyms == NULL || num == 0)
2195 break;
2196 /* Record the starting index in the reserved1 field. */
2197 sec->reserved1 = n;
2198 for (j = 0; j < num; j++, n++)
2199 {
2200 if (isyms[j] == NULL)
2201 dsym->indirect_syms[n] = BFD_MACH_O_INDIRECT_SYM_LOCAL;
2202 else
2203 dsym->indirect_syms[n] = isyms[j]->symbol.udata.i;
2204 }
2205 }
2206 break;
2207 default:
2208 break;
2209 }
2210 }
2211 }
2212
2213 return TRUE;
2214 }
2215
2216 /* Build Mach-O load commands (currently assuming an MH_OBJECT file).
2217 TODO: Other file formats, rebuilding symtab/dysymtab commands for strip
2218 and copy functionality. */
2219
2220 bfd_boolean
2221 bfd_mach_o_build_commands (bfd *abfd)
2222 {
2223 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
2224 unsigned wide = mach_o_wide_p (&mdata->header);
2225 int segcmd_idx = -1;
2226 int symtab_idx = -1;
2227 int dysymtab_idx = -1;
2228 unsigned long base_offset = 0;
2229
2230 /* Return now if commands are already present. */
2231 if (mdata->header.ncmds)
2232 return FALSE;
2233
2234 /* Fill in the file type, if not already set. */
2235
2236 if (mdata->header.filetype == 0)
2237 {
2238 if (abfd->flags & EXEC_P)
2239 mdata->header.filetype = BFD_MACH_O_MH_EXECUTE;
2240 else if (abfd->flags & DYNAMIC)
2241 mdata->header.filetype = BFD_MACH_O_MH_DYLIB;
2242 else
2243 mdata->header.filetype = BFD_MACH_O_MH_OBJECT;
2244 }
2245
2246 /* If hasn't already been done, flatten sections list, and sort
2247 if/when required. Must be done before the symbol table is adjusted,
2248 since that depends on properly numbered sections. */
2249 if (mdata->nsects == 0 || mdata->sections == NULL)
2250 if (! bfd_mach_o_mangle_sections (abfd, mdata))
2251 return FALSE;
2252
2253 /* Order the symbol table, fill-in/check mach-o specific fields and
2254 partition out any indirect symbols. */
2255 if (!bfd_mach_o_mangle_symbols (abfd))
2256 return FALSE;
2257
2258 /* Very simple command set (only really applicable to MH_OBJECTs):
2259 All the commands are optional - present only when there is suitable data.
2260 (i.e. it is valid to have an empty file)
2261
2262 a command (segment) to contain all the sections,
2263 command for the symbol table,
2264 a command for the dysymtab.
2265
2266 ??? maybe we should assert that this is an MH_OBJECT? */
2267
2268 if (mdata->nsects > 0)
2269 {
2270 segcmd_idx = 0;
2271 mdata->header.ncmds = 1;
2272 }
2273
2274 if (bfd_get_symcount (abfd) > 0)
2275 {
2276 mdata->header.ncmds++;
2277 symtab_idx = segcmd_idx + 1; /* 0 if the seg command is absent. */
2278 }
2279
2280 /* FIXME:
2281 This is a rather crude test for whether we should build a dysymtab. */
2282 if (bfd_mach_o_should_emit_dysymtab ()
2283 && bfd_get_symcount (abfd))
2284 {
2285 mdata->header.ncmds++;
2286 /* If there should be a case where a dysymtab could be emitted without
2287 a symtab (seems improbable), this would need amending. */
2288 dysymtab_idx = symtab_idx + 1;
2289 }
2290
2291 if (wide)
2292 base_offset = BFD_MACH_O_HEADER_64_SIZE;
2293 else
2294 base_offset = BFD_MACH_O_HEADER_SIZE;
2295
2296 /* Well, we must have a header, at least. */
2297 mdata->filelen = base_offset;
2298
2299 /* A bit unusual, but no content is valid;
2300 as -n empty.s -o empty.o */
2301 if (mdata->header.ncmds == 0)
2302 return TRUE;
2303
2304 mdata->commands = bfd_zalloc (abfd, mdata->header.ncmds
2305 * sizeof (bfd_mach_o_load_command));
2306 if (mdata->commands == NULL)
2307 return FALSE;
2308
2309 if (segcmd_idx >= 0)
2310 {
2311 bfd_mach_o_load_command *cmd = &mdata->commands[segcmd_idx];
2312 bfd_mach_o_segment_command *seg = &cmd->command.segment;
2313
2314 /* Count the segctions in the special blank segment used for MH_OBJECT. */
2315 seg->nsects = bfd_mach_o_count_sections_for_seg (NULL, mdata);
2316 if (seg->nsects == (unsigned long) -1)
2317 return FALSE;
2318
2319 /* Init segment command. */
2320 cmd->offset = base_offset;
2321 if (wide)
2322 {
2323 cmd->type = BFD_MACH_O_LC_SEGMENT_64;
2324 cmd->len = BFD_MACH_O_LC_SEGMENT_64_SIZE
2325 + BFD_MACH_O_SECTION_64_SIZE * seg->nsects;
2326 }
2327 else
2328 {
2329 cmd->type = BFD_MACH_O_LC_SEGMENT;
2330 cmd->len = BFD_MACH_O_LC_SEGMENT_SIZE
2331 + BFD_MACH_O_SECTION_SIZE * seg->nsects;
2332 }
2333
2334 cmd->type_required = FALSE;
2335 mdata->header.sizeofcmds = cmd->len;
2336 mdata->filelen += cmd->len;
2337 }
2338
2339 if (symtab_idx >= 0)
2340 {
2341 /* Init symtab command. */
2342 bfd_mach_o_load_command *cmd = &mdata->commands[symtab_idx];
2343
2344 cmd->type = BFD_MACH_O_LC_SYMTAB;
2345 cmd->offset = base_offset;
2346 if (segcmd_idx >= 0)
2347 cmd->offset += mdata->commands[segcmd_idx].len;
2348
2349 cmd->len = sizeof (struct mach_o_symtab_command_external)
2350 + BFD_MACH_O_LC_SIZE;
2351 cmd->type_required = FALSE;
2352 mdata->header.sizeofcmds += cmd->len;
2353 mdata->filelen += cmd->len;
2354 }
2355
2356 /* If required, setup symtab command, see comment above about the quality
2357 of this test. */
2358 if (dysymtab_idx >= 0)
2359 {
2360 bfd_mach_o_load_command *cmd = &mdata->commands[dysymtab_idx];
2361
2362 cmd->type = BFD_MACH_O_LC_DYSYMTAB;
2363 if (symtab_idx >= 0)
2364 cmd->offset = mdata->commands[symtab_idx].offset
2365 + mdata->commands[symtab_idx].len;
2366 else if (segcmd_idx >= 0)
2367 cmd->offset = mdata->commands[segcmd_idx].offset
2368 + mdata->commands[segcmd_idx].len;
2369 else
2370 cmd->offset = base_offset;
2371
2372 cmd->type_required = FALSE;
2373 cmd->len = sizeof (struct mach_o_dysymtab_command_external)
2374 + BFD_MACH_O_LC_SIZE;
2375
2376 mdata->header.sizeofcmds += cmd->len;
2377 mdata->filelen += cmd->len;
2378 }
2379
2380 /* So, now we have sized the commands and the filelen set to that.
2381 Now we can build the segment command and set the section file offsets. */
2382 if (segcmd_idx >= 0
2383 && ! bfd_mach_o_build_seg_command
2384 (NULL, mdata, &mdata->commands[segcmd_idx].command.segment))
2385 return FALSE;
2386
2387 /* If we're doing a dysymtab, cmd points to its load command. */
2388 if (dysymtab_idx >= 0
2389 && ! bfd_mach_o_build_dysymtab_command (abfd, mdata,
2390 &mdata->commands[dysymtab_idx]))
2391 return FALSE;
2392
2393 /* The symtab command is filled in when the symtab is written. */
2394 return TRUE;
2395 }
2396
2397 /* Set the contents of a section. */
2398
2399 bfd_boolean
2400 bfd_mach_o_set_section_contents (bfd *abfd,
2401 asection *section,
2402 const void * location,
2403 file_ptr offset,
2404 bfd_size_type count)
2405 {
2406 file_ptr pos;
2407
2408 /* Trying to write the first section contents will trigger the creation of
2409 the load commands if they are not already present. */
2410 if (! abfd->output_has_begun && ! bfd_mach_o_build_commands (abfd))
2411 return FALSE;
2412
2413 if (count == 0)
2414 return TRUE;
2415
2416 pos = section->filepos + offset;
2417 if (bfd_seek (abfd, pos, SEEK_SET) != 0
2418 || bfd_bwrite (location, count, abfd) != count)
2419 return FALSE;
2420
2421 return TRUE;
2422 }
2423
2424 int
2425 bfd_mach_o_sizeof_headers (bfd *a ATTRIBUTE_UNUSED,
2426 struct bfd_link_info *info ATTRIBUTE_UNUSED)
2427 {
2428 return 0;
2429 }
2430
2431 /* Make an empty symbol. This is required only because
2432 bfd_make_section_anyway wants to create a symbol for the section. */
2433
2434 asymbol *
2435 bfd_mach_o_make_empty_symbol (bfd *abfd)
2436 {
2437 asymbol *new_symbol;
2438
2439 new_symbol = bfd_zalloc (abfd, sizeof (bfd_mach_o_asymbol));
2440 if (new_symbol == NULL)
2441 return new_symbol;
2442 new_symbol->the_bfd = abfd;
2443 new_symbol->udata.i = SYM_MACHO_FIELDS_UNSET;
2444 return new_symbol;
2445 }
2446
2447 static bfd_boolean
2448 bfd_mach_o_read_header (bfd *abfd, bfd_mach_o_header *header)
2449 {
2450 struct mach_o_header_external raw;
2451 unsigned int size;
2452 bfd_vma (*get32) (const void *) = NULL;
2453
2454 /* Just read the magic number. */
2455 if (bfd_seek (abfd, 0, SEEK_SET) != 0
2456 || bfd_bread (raw.magic, sizeof (raw.magic), abfd) != 4)
2457 return FALSE;
2458
2459 if (bfd_getb32 (raw.magic) == BFD_MACH_O_MH_MAGIC)
2460 {
2461 header->byteorder = BFD_ENDIAN_BIG;
2462 header->magic = BFD_MACH_O_MH_MAGIC;
2463 header->version = 1;
2464 get32 = bfd_getb32;
2465 }
2466 else if (bfd_getl32 (raw.magic) == BFD_MACH_O_MH_MAGIC)
2467 {
2468 header->byteorder = BFD_ENDIAN_LITTLE;
2469 header->magic = BFD_MACH_O_MH_MAGIC;
2470 header->version = 1;
2471 get32 = bfd_getl32;
2472 }
2473 else if (bfd_getb32 (raw.magic) == BFD_MACH_O_MH_MAGIC_64)
2474 {
2475 header->byteorder = BFD_ENDIAN_BIG;
2476 header->magic = BFD_MACH_O_MH_MAGIC_64;
2477 header->version = 2;
2478 get32 = bfd_getb32;
2479 }
2480 else if (bfd_getl32 (raw.magic) == BFD_MACH_O_MH_MAGIC_64)
2481 {
2482 header->byteorder = BFD_ENDIAN_LITTLE;
2483 header->magic = BFD_MACH_O_MH_MAGIC_64;
2484 header->version = 2;
2485 get32 = bfd_getl32;
2486 }
2487 else
2488 {
2489 header->byteorder = BFD_ENDIAN_UNKNOWN;
2490 return FALSE;
2491 }
2492
2493 /* Once the size of the header is known, read the full header. */
2494 size = mach_o_wide_p (header) ?
2495 BFD_MACH_O_HEADER_64_SIZE : BFD_MACH_O_HEADER_SIZE;
2496
2497 if (bfd_seek (abfd, 0, SEEK_SET) != 0
2498 || bfd_bread (&raw, size, abfd) != size)
2499 return FALSE;
2500
2501 header->cputype = (*get32) (raw.cputype);
2502 header->cpusubtype = (*get32) (raw.cpusubtype);
2503 header->filetype = (*get32) (raw.filetype);
2504 header->ncmds = (*get32) (raw.ncmds);
2505 header->sizeofcmds = (*get32) (raw.sizeofcmds);
2506 header->flags = (*get32) (raw.flags);
2507
2508 if (mach_o_wide_p (header))
2509 header->reserved = (*get32) (raw.reserved);
2510
2511 return TRUE;
2512 }
2513
2514 bfd_boolean
2515 bfd_mach_o_new_section_hook (bfd *abfd, asection *sec)
2516 {
2517 bfd_mach_o_section *s;
2518 unsigned bfdalign = bfd_get_section_alignment (abfd, sec);
2519
2520 s = bfd_mach_o_get_mach_o_section (sec);
2521 if (s == NULL)
2522 {
2523 flagword bfd_flags;
2524 static const mach_o_section_name_xlat * xlat;
2525
2526 s = (bfd_mach_o_section *) bfd_zalloc (abfd, sizeof (*s));
2527 if (s == NULL)
2528 return FALSE;
2529 sec->used_by_bfd = s;
2530 s->bfdsection = sec;
2531
2532 /* Create the Darwin seg/sect name pair from the bfd name.
2533 If this is a canonical name for which a specific paiting exists
2534 there will also be defined flags, type, attribute and alignment
2535 values. */
2536 xlat = bfd_mach_o_convert_section_name_to_mach_o (abfd, sec, s);
2537 if (xlat != NULL)
2538 {
2539 s->flags = xlat->macho_sectype | xlat->macho_secattr;
2540 s->align = xlat->sectalign > bfdalign ? xlat->sectalign
2541 : bfdalign;
2542 bfd_set_section_alignment (abfd, sec, s->align);
2543 bfd_flags = bfd_get_section_flags (abfd, sec);
2544 if (bfd_flags == SEC_NO_FLAGS)
2545 bfd_set_section_flags (abfd, sec, xlat->bfd_flags);
2546 }
2547 else
2548 /* Create default flags. */
2549 bfd_mach_o_set_section_flags_from_bfd (abfd, sec);
2550 }
2551
2552 return _bfd_generic_new_section_hook (abfd, sec);
2553 }
2554
2555 static void
2556 bfd_mach_o_init_section_from_mach_o (bfd *abfd, asection *sec,
2557 unsigned long prot)
2558 {
2559 flagword flags;
2560 bfd_mach_o_section *section;
2561
2562 flags = bfd_get_section_flags (abfd, sec);
2563 section = bfd_mach_o_get_mach_o_section (sec);
2564
2565 /* TODO: see if we should use the xlat system for doing this by
2566 preference and fall back to this for unknown sections. */
2567
2568 if (flags == SEC_NO_FLAGS)
2569 {
2570 /* Try to guess flags. */
2571 if (section->flags & BFD_MACH_O_S_ATTR_DEBUG)
2572 flags = SEC_DEBUGGING;
2573 else
2574 {
2575 flags = SEC_ALLOC;
2576 if ((section->flags & BFD_MACH_O_SECTION_TYPE_MASK)
2577 != BFD_MACH_O_S_ZEROFILL)
2578 {
2579 flags |= SEC_LOAD;
2580 if (prot & BFD_MACH_O_PROT_EXECUTE)
2581 flags |= SEC_CODE;
2582 if (prot & BFD_MACH_O_PROT_WRITE)
2583 flags |= SEC_DATA;
2584 else if (prot & BFD_MACH_O_PROT_READ)
2585 flags |= SEC_READONLY;
2586 }
2587 }
2588 }
2589 else
2590 {
2591 if ((flags & SEC_DEBUGGING) == 0)
2592 flags |= SEC_ALLOC;
2593 }
2594
2595 if (section->offset != 0)
2596 flags |= SEC_HAS_CONTENTS;
2597 if (section->nreloc != 0)
2598 flags |= SEC_RELOC;
2599
2600 bfd_set_section_flags (abfd, sec, flags);
2601
2602 sec->vma = section->addr;
2603 sec->lma = section->addr;
2604 sec->size = section->size;
2605 sec->filepos = section->offset;
2606 sec->alignment_power = section->align;
2607 sec->segment_mark = 0;
2608 sec->reloc_count = section->nreloc;
2609 sec->rel_filepos = section->reloff;
2610 }
2611
2612 static asection *
2613 bfd_mach_o_make_bfd_section (bfd *abfd,
2614 const unsigned char *segname,
2615 const unsigned char *sectname)
2616 {
2617 const char *sname;
2618 flagword flags;
2619
2620 bfd_mach_o_convert_section_name_to_bfd
2621 (abfd, (const char *)segname, (const char *)sectname, &sname, &flags);
2622 if (sname == NULL)
2623 return NULL;
2624
2625 return bfd_make_section_anyway_with_flags (abfd, sname, flags);
2626 }
2627
2628 static asection *
2629 bfd_mach_o_read_section_32 (bfd *abfd,
2630 unsigned int offset,
2631 unsigned long prot)
2632 {
2633 struct mach_o_section_32_external raw;
2634 asection *sec;
2635 bfd_mach_o_section *section;
2636
2637 if (bfd_seek (abfd, offset, SEEK_SET) != 0
2638 || (bfd_bread (&raw, BFD_MACH_O_SECTION_SIZE, abfd)
2639 != BFD_MACH_O_SECTION_SIZE))
2640 return NULL;
2641
2642 sec = bfd_mach_o_make_bfd_section (abfd, raw.segname, raw.sectname);
2643 if (sec == NULL)
2644 return NULL;
2645
2646 section = bfd_mach_o_get_mach_o_section (sec);
2647 memcpy (section->segname, raw.segname, sizeof (raw.segname));
2648 section->segname[BFD_MACH_O_SEGNAME_SIZE] = 0;
2649 memcpy (section->sectname, raw.sectname, sizeof (raw.sectname));
2650 section->sectname[BFD_MACH_O_SECTNAME_SIZE] = 0;
2651 section->addr = bfd_h_get_32 (abfd, raw.addr);
2652 section->size = bfd_h_get_32 (abfd, raw.size);
2653 section->offset = bfd_h_get_32 (abfd, raw.offset);
2654 section->align = bfd_h_get_32 (abfd, raw.align);
2655 section->reloff = bfd_h_get_32 (abfd, raw.reloff);
2656 section->nreloc = bfd_h_get_32 (abfd, raw.nreloc);
2657 section->flags = bfd_h_get_32 (abfd, raw.flags);
2658 section->reserved1 = bfd_h_get_32 (abfd, raw.reserved1);
2659 section->reserved2 = bfd_h_get_32 (abfd, raw.reserved2);
2660 section->reserved3 = 0;
2661
2662 bfd_mach_o_init_section_from_mach_o (abfd, sec, prot);
2663
2664 return sec;
2665 }
2666
2667 static asection *
2668 bfd_mach_o_read_section_64 (bfd *abfd,
2669 unsigned int offset,
2670 unsigned long prot)
2671 {
2672 struct mach_o_section_64_external raw;
2673 asection *sec;
2674 bfd_mach_o_section *section;
2675
2676 if (bfd_seek (abfd, offset, SEEK_SET) != 0
2677 || (bfd_bread (&raw, BFD_MACH_O_SECTION_64_SIZE, abfd)
2678 != BFD_MACH_O_SECTION_64_SIZE))
2679 return NULL;
2680
2681 sec = bfd_mach_o_make_bfd_section (abfd, raw.segname, raw.sectname);
2682 if (sec == NULL)
2683 return NULL;
2684
2685 section = bfd_mach_o_get_mach_o_section (sec);
2686 memcpy (section->segname, raw.segname, sizeof (raw.segname));
2687 section->segname[BFD_MACH_O_SEGNAME_SIZE] = 0;
2688 memcpy (section->sectname, raw.sectname, sizeof (raw.sectname));
2689 section->sectname[BFD_MACH_O_SECTNAME_SIZE] = 0;
2690 section->addr = bfd_h_get_64 (abfd, raw.addr);
2691 section->size = bfd_h_get_64 (abfd, raw.size);
2692 section->offset = bfd_h_get_32 (abfd, raw.offset);
2693 section->align = bfd_h_get_32 (abfd, raw.align);
2694 section->reloff = bfd_h_get_32 (abfd, raw.reloff);
2695 section->nreloc = bfd_h_get_32 (abfd, raw.nreloc);
2696 section->flags = bfd_h_get_32 (abfd, raw.flags);
2697 section->reserved1 = bfd_h_get_32 (abfd, raw.reserved1);
2698 section->reserved2 = bfd_h_get_32 (abfd, raw.reserved2);
2699 section->reserved3 = bfd_h_get_32 (abfd, raw.reserved3);
2700
2701 bfd_mach_o_init_section_from_mach_o (abfd, sec, prot);
2702
2703 return sec;
2704 }
2705
2706 static asection *
2707 bfd_mach_o_read_section (bfd *abfd,
2708 unsigned int offset,
2709 unsigned long prot,
2710 unsigned int wide)
2711 {
2712 if (wide)
2713 return bfd_mach_o_read_section_64 (abfd, offset, prot);
2714 else
2715 return bfd_mach_o_read_section_32 (abfd, offset, prot);
2716 }
2717
2718 static bfd_boolean
2719 bfd_mach_o_read_symtab_symbol (bfd *abfd,
2720 bfd_mach_o_symtab_command *sym,
2721 bfd_mach_o_asymbol *s,
2722 unsigned long i)
2723 {
2724 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
2725 unsigned int wide = mach_o_wide_p (&mdata->header);
2726 unsigned int symwidth =
2727 wide ? BFD_MACH_O_NLIST_64_SIZE : BFD_MACH_O_NLIST_SIZE;
2728 unsigned int symoff = sym->symoff + (i * symwidth);
2729 struct mach_o_nlist_64_external raw;
2730 unsigned char type = -1;
2731 unsigned char section = -1;
2732 short desc = -1;
2733 symvalue value = -1;
2734 unsigned long stroff = -1;
2735 unsigned int symtype = -1;
2736
2737 BFD_ASSERT (sym->strtab != NULL);
2738
2739 if (bfd_seek (abfd, symoff, SEEK_SET) != 0
2740 || bfd_bread (&raw, symwidth, abfd) != symwidth)
2741 {
2742 (*_bfd_error_handler)
2743 (_("bfd_mach_o_read_symtab_symbol: unable to read %d bytes at %lu"),
2744 symwidth, (unsigned long) symoff);
2745 return FALSE;
2746 }
2747
2748 stroff = bfd_h_get_32 (abfd, raw.n_strx);
2749 type = bfd_h_get_8 (abfd, raw.n_type);
2750 symtype = type & BFD_MACH_O_N_TYPE;
2751 section = bfd_h_get_8 (abfd, raw.n_sect);
2752 desc = bfd_h_get_16 (abfd, raw.n_desc);
2753 if (wide)
2754 value = bfd_h_get_64 (abfd, raw.n_value);
2755 else
2756 value = bfd_h_get_32 (abfd, raw.n_value);
2757
2758 if (stroff >= sym->strsize)
2759 {
2760 (*_bfd_error_handler)
2761 (_("bfd_mach_o_read_symtab_symbol: name out of range (%lu >= %lu)"),
2762 (unsigned long) stroff,
2763 (unsigned long) sym->strsize);
2764 return FALSE;
2765 }
2766
2767 s->symbol.the_bfd = abfd;
2768 s->symbol.name = sym->strtab + stroff;
2769 s->symbol.value = value;
2770 s->symbol.flags = 0x0;
2771 s->symbol.udata.i = i;
2772 s->n_type = type;
2773 s->n_sect = section;
2774 s->n_desc = desc;
2775
2776 if (type & BFD_MACH_O_N_STAB)
2777 {
2778 s->symbol.flags |= BSF_DEBUGGING;
2779 s->symbol.section = bfd_und_section_ptr;
2780 switch (type)
2781 {
2782 case N_FUN:
2783 case N_STSYM:
2784 case N_LCSYM:
2785 case N_BNSYM:
2786 case N_SLINE:
2787 case N_ENSYM:
2788 case N_ECOMM:
2789 case N_ECOML:
2790 case N_GSYM:
2791 if ((section > 0) && (section <= mdata->nsects))
2792 {
2793 s->symbol.section = mdata->sections[section - 1]->bfdsection;
2794 s->symbol.value =
2795 s->symbol.value - mdata->sections[section - 1]->addr;
2796 }
2797 break;
2798 }
2799 }
2800 else
2801 {
2802 if (type & (BFD_MACH_O_N_PEXT | BFD_MACH_O_N_EXT))
2803 s->symbol.flags |= BSF_GLOBAL;
2804 else
2805 s->symbol.flags |= BSF_LOCAL;
2806
2807 switch (symtype)
2808 {
2809 case BFD_MACH_O_N_UNDF:
2810 if (type == (BFD_MACH_O_N_UNDF | BFD_MACH_O_N_EXT)
2811 && s->symbol.value != 0)
2812 {
2813 /* A common symbol. */
2814 s->symbol.section = bfd_com_section_ptr;
2815 s->symbol.flags = BSF_NO_FLAGS;
2816 }
2817 else
2818 {
2819 s->symbol.section = bfd_und_section_ptr;
2820 if (s->n_desc & BFD_MACH_O_N_WEAK_REF)
2821 s->symbol.flags |= BSF_WEAK;
2822 }
2823 break;
2824 case BFD_MACH_O_N_PBUD:
2825 s->symbol.section = bfd_und_section_ptr;
2826 break;
2827 case BFD_MACH_O_N_ABS:
2828 s->symbol.section = bfd_abs_section_ptr;
2829 break;
2830 case BFD_MACH_O_N_SECT:
2831 if ((section > 0) && (section <= mdata->nsects))
2832 {
2833 s->symbol.section = mdata->sections[section - 1]->bfdsection;
2834 s->symbol.value =
2835 s->symbol.value - mdata->sections[section - 1]->addr;
2836 }
2837 else
2838 {
2839 /* Mach-O uses 0 to mean "no section"; not an error. */
2840 if (section != 0)
2841 {
2842 (*_bfd_error_handler) (_("bfd_mach_o_read_symtab_symbol: "
2843 "symbol \"%s\" specified invalid section %d (max %lu): setting to undefined"),
2844 s->symbol.name, section, mdata->nsects);
2845 }
2846 s->symbol.section = bfd_und_section_ptr;
2847 }
2848 break;
2849 case BFD_MACH_O_N_INDR:
2850 /* FIXME: we don't follow the BFD convention as this indirect symbol
2851 won't be followed by the referenced one. This looks harmless
2852 unless we start using the linker. */
2853 s->symbol.flags |= BSF_INDIRECT;
2854 s->symbol.section = bfd_ind_section_ptr;
2855 s->symbol.value = 0;
2856 break;
2857 default:
2858 (*_bfd_error_handler) (_("bfd_mach_o_read_symtab_symbol: "
2859 "symbol \"%s\" specified invalid type field 0x%x: setting to undefined"),
2860 s->symbol.name, symtype);
2861 s->symbol.section = bfd_und_section_ptr;
2862 break;
2863 }
2864 }
2865
2866 return TRUE;
2867 }
2868
2869 bfd_boolean
2870 bfd_mach_o_read_symtab_strtab (bfd *abfd)
2871 {
2872 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
2873 bfd_mach_o_symtab_command *sym = mdata->symtab;
2874
2875 /* Fail if there is no symtab. */
2876 if (sym == NULL)
2877 return FALSE;
2878
2879 /* Success if already loaded. */
2880 if (sym->strtab)
2881 return TRUE;
2882
2883 if (abfd->flags & BFD_IN_MEMORY)
2884 {
2885 struct bfd_in_memory *b;
2886
2887 b = (struct bfd_in_memory *) abfd->iostream;
2888
2889 if ((sym->stroff + sym->strsize) > b->size)
2890 {
2891 bfd_set_error (bfd_error_file_truncated);
2892 return FALSE;
2893 }
2894 sym->strtab = (char *) b->buffer + sym->stroff;
2895 }
2896 else
2897 {
2898 sym->strtab = bfd_alloc (abfd, sym->strsize);
2899 if (sym->strtab == NULL)
2900 return FALSE;
2901
2902 if (bfd_seek (abfd, sym->stroff, SEEK_SET) != 0
2903 || bfd_bread (sym->strtab, sym->strsize, abfd) != sym->strsize)
2904 {
2905 bfd_set_error (bfd_error_file_truncated);
2906 return FALSE;
2907 }
2908 }
2909
2910 return TRUE;
2911 }
2912
2913 bfd_boolean
2914 bfd_mach_o_read_symtab_symbols (bfd *abfd)
2915 {
2916 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
2917 bfd_mach_o_symtab_command *sym = mdata->symtab;
2918 unsigned long i;
2919
2920 if (sym == NULL || sym->symbols)
2921 {
2922 /* Return now if there are no symbols or if already loaded. */
2923 return TRUE;
2924 }
2925
2926 sym->symbols = bfd_alloc (abfd, sym->nsyms * sizeof (bfd_mach_o_asymbol));
2927
2928 if (sym->symbols == NULL)
2929 {
2930 (*_bfd_error_handler) (_("bfd_mach_o_read_symtab_symbols: unable to allocate memory for symbols"));
2931 return FALSE;
2932 }
2933
2934 if (!bfd_mach_o_read_symtab_strtab (abfd))
2935 return FALSE;
2936
2937 for (i = 0; i < sym->nsyms; i++)
2938 {
2939 if (!bfd_mach_o_read_symtab_symbol (abfd, sym, &sym->symbols[i], i))
2940 return FALSE;
2941 }
2942
2943 return TRUE;
2944 }
2945
2946 static const char *
2947 bfd_mach_o_i386_flavour_string (unsigned int flavour)
2948 {
2949 switch ((int) flavour)
2950 {
2951 case BFD_MACH_O_x86_THREAD_STATE32: return "x86_THREAD_STATE32";
2952 case BFD_MACH_O_x86_FLOAT_STATE32: return "x86_FLOAT_STATE32";
2953 case BFD_MACH_O_x86_EXCEPTION_STATE32: return "x86_EXCEPTION_STATE32";
2954 case BFD_MACH_O_x86_THREAD_STATE64: return "x86_THREAD_STATE64";
2955 case BFD_MACH_O_x86_FLOAT_STATE64: return "x86_FLOAT_STATE64";
2956 case BFD_MACH_O_x86_EXCEPTION_STATE64: return "x86_EXCEPTION_STATE64";
2957 case BFD_MACH_O_x86_THREAD_STATE: return "x86_THREAD_STATE";
2958 case BFD_MACH_O_x86_FLOAT_STATE: return "x86_FLOAT_STATE";
2959 case BFD_MACH_O_x86_EXCEPTION_STATE: return "x86_EXCEPTION_STATE";
2960 case BFD_MACH_O_x86_DEBUG_STATE32: return "x86_DEBUG_STATE32";
2961 case BFD_MACH_O_x86_DEBUG_STATE64: return "x86_DEBUG_STATE64";
2962 case BFD_MACH_O_x86_DEBUG_STATE: return "x86_DEBUG_STATE";
2963 case BFD_MACH_O_x86_THREAD_STATE_NONE: return "x86_THREAD_STATE_NONE";
2964 default: return "UNKNOWN";
2965 }
2966 }
2967
2968 static const char *
2969 bfd_mach_o_ppc_flavour_string (unsigned int flavour)
2970 {
2971 switch ((int) flavour)
2972 {
2973 case BFD_MACH_O_PPC_THREAD_STATE: return "PPC_THREAD_STATE";
2974 case BFD_MACH_O_PPC_FLOAT_STATE: return "PPC_FLOAT_STATE";
2975 case BFD_MACH_O_PPC_EXCEPTION_STATE: return "PPC_EXCEPTION_STATE";
2976 case BFD_MACH_O_PPC_VECTOR_STATE: return "PPC_VECTOR_STATE";
2977 case BFD_MACH_O_PPC_THREAD_STATE64: return "PPC_THREAD_STATE64";
2978 case BFD_MACH_O_PPC_EXCEPTION_STATE64: return "PPC_EXCEPTION_STATE64";
2979 default: return "UNKNOWN";
2980 }
2981 }
2982
2983 static int
2984 bfd_mach_o_read_dylinker (bfd *abfd, bfd_mach_o_load_command *command)
2985 {
2986 bfd_mach_o_dylinker_command *cmd = &command->command.dylinker;
2987 struct mach_o_str_command_external raw;
2988 unsigned int nameoff;
2989
2990 BFD_ASSERT ((command->type == BFD_MACH_O_LC_ID_DYLINKER)
2991 || (command->type == BFD_MACH_O_LC_LOAD_DYLINKER));
2992
2993 if (bfd_seek (abfd, command->offset + BFD_MACH_O_LC_SIZE, SEEK_SET) != 0
2994 || bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
2995 return -1;
2996
2997 nameoff = bfd_h_get_32 (abfd, raw.str);
2998
2999 cmd->name_offset = command->offset + nameoff;
3000 cmd->name_len = command->len - nameoff;
3001 cmd->name_str = bfd_alloc (abfd, cmd->name_len);
3002 if (cmd->name_str == NULL)
3003 return -1;
3004 if (bfd_seek (abfd, cmd->name_offset, SEEK_SET) != 0
3005 || bfd_bread (cmd->name_str, cmd->name_len, abfd) != cmd->name_len)
3006 return -1;
3007 return 0;
3008 }
3009
3010 static int
3011 bfd_mach_o_read_dylib (bfd *abfd, bfd_mach_o_load_command *command)
3012 {
3013 bfd_mach_o_dylib_command *cmd = &command->command.dylib;
3014 struct mach_o_dylib_command_external raw;
3015 unsigned int nameoff;
3016
3017 switch (command->type)
3018 {
3019 case BFD_MACH_O_LC_LOAD_DYLIB:
3020 case BFD_MACH_O_LC_LOAD_WEAK_DYLIB:
3021 case BFD_MACH_O_LC_ID_DYLIB:
3022 case BFD_MACH_O_LC_REEXPORT_DYLIB:
3023 case BFD_MACH_O_LC_LOAD_UPWARD_DYLIB:
3024 break;
3025 default:
3026 BFD_FAIL ();
3027 return -1;
3028 }
3029
3030 if (bfd_seek (abfd, command->offset + BFD_MACH_O_LC_SIZE, SEEK_SET) != 0
3031 || bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
3032 return -1;
3033
3034 nameoff = bfd_h_get_32 (abfd, raw.name);
3035 cmd->timestamp = bfd_h_get_32 (abfd, raw.timestamp);
3036 cmd->current_version = bfd_h_get_32 (abfd, raw.current_version);
3037 cmd->compatibility_version = bfd_h_get_32 (abfd, raw.compatibility_version);
3038
3039 cmd->name_offset = command->offset + nameoff;
3040 cmd->name_len = command->len - nameoff;
3041 cmd->name_str = bfd_alloc (abfd, cmd->name_len);
3042 if (cmd->name_str == NULL)
3043 return -1;
3044 if (bfd_seek (abfd, cmd->name_offset, SEEK_SET) != 0
3045 || bfd_bread (cmd->name_str, cmd->name_len, abfd) != cmd->name_len)
3046 return -1;
3047 return 0;
3048 }
3049
3050 static int
3051 bfd_mach_o_read_prebound_dylib (bfd *abfd ATTRIBUTE_UNUSED,
3052 bfd_mach_o_load_command *command ATTRIBUTE_UNUSED)
3053 {
3054 /* bfd_mach_o_prebound_dylib_command *cmd = &command->command.prebound_dylib; */
3055
3056 BFD_ASSERT (command->type == BFD_MACH_O_LC_PREBOUND_DYLIB);
3057 return 0;
3058 }
3059
3060 static int
3061 bfd_mach_o_read_fvmlib (bfd *abfd, bfd_mach_o_load_command *command)
3062 {
3063 bfd_mach_o_fvmlib_command *fvm = &command->command.fvmlib;
3064 struct mach_o_fvmlib_command_external raw;
3065 unsigned int nameoff;
3066
3067 if (bfd_seek (abfd, command->offset + BFD_MACH_O_LC_SIZE, SEEK_SET) != 0
3068 || bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
3069 return -1;
3070
3071 nameoff = bfd_h_get_32 (abfd, raw.name);
3072 fvm->minor_version = bfd_h_get_32 (abfd, raw.minor_version);
3073 fvm->header_addr = bfd_h_get_32 (abfd, raw.header_addr);
3074
3075 fvm->name_offset = command->offset + nameoff;
3076 fvm->name_len = command->len - nameoff;
3077 fvm->name_str = bfd_alloc (abfd, fvm->name_len);
3078 if (fvm->name_str == NULL)
3079 return -1;
3080 if (bfd_seek (abfd, fvm->name_offset, SEEK_SET) != 0
3081 || bfd_bread (fvm->name_str, fvm->name_len, abfd) != fvm->name_len)
3082 return -1;
3083 return 0;
3084 }
3085
3086 static int
3087 bfd_mach_o_read_thread (bfd *abfd, bfd_mach_o_load_command *command)
3088 {
3089 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
3090 bfd_mach_o_thread_command *cmd = &command->command.thread;
3091 unsigned int offset;
3092 unsigned int nflavours;
3093 unsigned int i;
3094
3095 BFD_ASSERT ((command->type == BFD_MACH_O_LC_THREAD)
3096 || (command->type == BFD_MACH_O_LC_UNIXTHREAD));
3097
3098 /* Count the number of threads. */
3099 offset = 8;
3100 nflavours = 0;
3101 while (offset != command->len)
3102 {
3103 struct mach_o_thread_command_external raw;
3104
3105 if (offset >= command->len)
3106 return -1;
3107
3108 if (bfd_seek (abfd, command->offset + offset, SEEK_SET) != 0
3109 || bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
3110 return -1;
3111
3112 offset += sizeof (raw) + bfd_h_get_32 (abfd, raw.count) * 4;
3113 nflavours++;
3114 }
3115
3116 /* Allocate threads. */
3117 cmd->flavours = bfd_alloc
3118 (abfd, nflavours * sizeof (bfd_mach_o_thread_flavour));
3119 if (cmd->flavours == NULL)
3120 return -1;
3121 cmd->nflavours = nflavours;
3122
3123 offset = 8;
3124 nflavours = 0;
3125 while (offset != command->len)
3126 {
3127 struct mach_o_thread_command_external raw;
3128
3129 if (offset >= command->len)
3130 return -1;
3131
3132 if (nflavours >= cmd->nflavours)
3133 return -1;
3134
3135 if (bfd_seek (abfd, command->offset + offset, SEEK_SET) != 0
3136 || bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
3137 return -1;
3138
3139 cmd->flavours[nflavours].flavour = bfd_h_get_32 (abfd, raw.flavour);
3140 cmd->flavours[nflavours].offset = command->offset + offset + sizeof (raw);
3141 cmd->flavours[nflavours].size = bfd_h_get_32 (abfd, raw.count) * 4;
3142 offset += cmd->flavours[nflavours].size + sizeof (raw);
3143 nflavours++;
3144 }
3145
3146 for (i = 0; i < nflavours; i++)
3147 {
3148 asection *bfdsec;
3149 unsigned int snamelen;
3150 char *sname;
3151 const char *flavourstr;
3152 const char *prefix = "LC_THREAD";
3153 unsigned int j = 0;
3154
3155 switch (mdata->header.cputype)
3156 {
3157 case BFD_MACH_O_CPU_TYPE_POWERPC:
3158 case BFD_MACH_O_CPU_TYPE_POWERPC_64:
3159 flavourstr = bfd_mach_o_ppc_flavour_string (cmd->flavours[i].flavour);
3160 break;
3161 case BFD_MACH_O_CPU_TYPE_I386:
3162 case BFD_MACH_O_CPU_TYPE_X86_64:
3163 flavourstr = bfd_mach_o_i386_flavour_string (cmd->flavours[i].flavour);
3164 break;
3165 default:
3166 flavourstr = "UNKNOWN_ARCHITECTURE";
3167 break;
3168 }
3169
3170 snamelen = strlen (prefix) + 1 + 20 + 1 + strlen (flavourstr) + 1;
3171 sname = bfd_alloc (abfd, snamelen);
3172 if (sname == NULL)
3173 return -1;
3174
3175 for (;;)
3176 {
3177 sprintf (sname, "%s.%s.%u", prefix, flavourstr, j);
3178 if (bfd_get_section_by_name (abfd, sname) == NULL)
3179 break;
3180 j++;
3181 }
3182
3183 bfdsec = bfd_make_section_with_flags (abfd, sname, SEC_HAS_CONTENTS);
3184
3185 bfdsec->vma = 0;
3186 bfdsec->lma = 0;
3187 bfdsec->size = cmd->flavours[i].size;
3188 bfdsec->filepos = cmd->flavours[i].offset;
3189 bfdsec->alignment_power = 0x0;
3190
3191 cmd->section = bfdsec;
3192 }
3193
3194 return 0;
3195 }
3196
3197 static int
3198 bfd_mach_o_read_dysymtab (bfd *abfd, bfd_mach_o_load_command *command)
3199 {
3200 bfd_mach_o_dysymtab_command *cmd = &command->command.dysymtab;
3201 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
3202
3203 BFD_ASSERT (command->type == BFD_MACH_O_LC_DYSYMTAB);
3204
3205 {
3206 struct mach_o_dysymtab_command_external raw;
3207
3208 if (bfd_seek (abfd, command->offset + BFD_MACH_O_LC_SIZE, SEEK_SET) != 0
3209 || bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
3210 return -1;
3211
3212 cmd->ilocalsym = bfd_h_get_32 (abfd, raw.ilocalsym);
3213 cmd->nlocalsym = bfd_h_get_32 (abfd, raw.nlocalsym);
3214 cmd->iextdefsym = bfd_h_get_32 (abfd, raw.iextdefsym);
3215 cmd->nextdefsym = bfd_h_get_32 (abfd, raw.nextdefsym);
3216 cmd->iundefsym = bfd_h_get_32 (abfd, raw.iundefsym);
3217 cmd->nundefsym = bfd_h_get_32 (abfd, raw.nundefsym);
3218 cmd->tocoff = bfd_h_get_32 (abfd, raw.tocoff);
3219 cmd->ntoc = bfd_h_get_32 (abfd, raw.ntoc);
3220 cmd->modtaboff = bfd_h_get_32 (abfd, raw.modtaboff);
3221 cmd->nmodtab = bfd_h_get_32 (abfd, raw.nmodtab);
3222 cmd->extrefsymoff = bfd_h_get_32 (abfd, raw.extrefsymoff);
3223 cmd->nextrefsyms = bfd_h_get_32 (abfd, raw.nextrefsyms);
3224 cmd->indirectsymoff = bfd_h_get_32 (abfd, raw.indirectsymoff);
3225 cmd->nindirectsyms = bfd_h_get_32 (abfd, raw.nindirectsyms);
3226 cmd->extreloff = bfd_h_get_32 (abfd, raw.extreloff);
3227 cmd->nextrel = bfd_h_get_32 (abfd, raw.nextrel);
3228 cmd->locreloff = bfd_h_get_32 (abfd, raw.locreloff);
3229 cmd->nlocrel = bfd_h_get_32 (abfd, raw.nlocrel);
3230 }
3231
3232 if (cmd->nmodtab != 0)
3233 {
3234 unsigned int i;
3235 int wide = bfd_mach_o_wide_p (abfd);
3236 unsigned int module_len = wide ? 56 : 52;
3237
3238 cmd->dylib_module =
3239 bfd_alloc (abfd, cmd->nmodtab * sizeof (bfd_mach_o_dylib_module));
3240 if (cmd->dylib_module == NULL)
3241 return -1;
3242
3243 if (bfd_seek (abfd, cmd->modtaboff, SEEK_SET) != 0)
3244 return -1;
3245
3246 for (i = 0; i < cmd->nmodtab; i++)
3247 {
3248 bfd_mach_o_dylib_module *module = &cmd->dylib_module[i];
3249 unsigned long v;
3250 unsigned char buf[56];
3251
3252 if (bfd_bread ((void *) buf, module_len, abfd) != module_len)
3253 return -1;
3254
3255 module->module_name_idx = bfd_h_get_32 (abfd, buf + 0);
3256 module->iextdefsym = bfd_h_get_32 (abfd, buf + 4);
3257 module->nextdefsym = bfd_h_get_32 (abfd, buf + 8);
3258 module->irefsym = bfd_h_get_32 (abfd, buf + 12);
3259 module->nrefsym = bfd_h_get_32 (abfd, buf + 16);
3260 module->ilocalsym = bfd_h_get_32 (abfd, buf + 20);
3261 module->nlocalsym = bfd_h_get_32 (abfd, buf + 24);
3262 module->iextrel = bfd_h_get_32 (abfd, buf + 28);
3263 module->nextrel = bfd_h_get_32 (abfd, buf + 32);
3264 v = bfd_h_get_32 (abfd, buf +36);
3265 module->iinit = v & 0xffff;
3266 module->iterm = (v >> 16) & 0xffff;
3267 v = bfd_h_get_32 (abfd, buf + 40);
3268 module->ninit = v & 0xffff;
3269 module->nterm = (v >> 16) & 0xffff;
3270 if (wide)
3271 {
3272 module->objc_module_info_size = bfd_h_get_32 (abfd, buf + 44);
3273 module->objc_module_info_addr = bfd_h_get_64 (abfd, buf + 48);
3274 }
3275 else
3276 {
3277 module->objc_module_info_addr = bfd_h_get_32 (abfd, buf + 44);
3278 module->objc_module_info_size = bfd_h_get_32 (abfd, buf + 48);
3279 }
3280 }
3281 }
3282
3283 if (cmd->ntoc != 0)
3284 {
3285 unsigned int i;
3286
3287 cmd->dylib_toc = bfd_alloc
3288 (abfd, cmd->ntoc * sizeof (bfd_mach_o_dylib_table_of_content));
3289 if (cmd->dylib_toc == NULL)
3290 return -1;
3291
3292 if (bfd_seek (abfd, cmd->tocoff, SEEK_SET) != 0)
3293 return -1;
3294
3295 for (i = 0; i < cmd->ntoc; i++)
3296 {
3297 struct mach_o_dylib_table_of_contents_external raw;
3298 bfd_mach_o_dylib_table_of_content *toc = &cmd->dylib_toc[i];
3299
3300 if (bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
3301 return -1;
3302
3303 toc->symbol_index = bfd_h_get_32 (abfd, raw.symbol_index);
3304 toc->module_index = bfd_h_get_32 (abfd, raw.module_index);
3305 }
3306 }
3307
3308 if (cmd->nindirectsyms != 0)
3309 {
3310 unsigned int i;
3311
3312 cmd->indirect_syms = bfd_alloc
3313 (abfd, cmd->nindirectsyms * sizeof (unsigned int));
3314 if (cmd->indirect_syms == NULL)
3315 return -1;
3316
3317 if (bfd_seek (abfd, cmd->indirectsymoff, SEEK_SET) != 0)
3318 return -1;
3319
3320 for (i = 0; i < cmd->nindirectsyms; i++)
3321 {
3322 unsigned char raw[4];
3323 unsigned int *is = &cmd->indirect_syms[i];
3324
3325 if (bfd_bread (raw, sizeof (raw), abfd) != sizeof (raw))
3326 return -1;
3327
3328 *is = bfd_h_get_32 (abfd, raw);
3329 }
3330 }
3331
3332 if (cmd->nextrefsyms != 0)
3333 {
3334 unsigned long v;
3335 unsigned int i;
3336
3337 cmd->ext_refs = bfd_alloc
3338 (abfd, cmd->nextrefsyms * sizeof (bfd_mach_o_dylib_reference));
3339 if (cmd->ext_refs == NULL)
3340 return -1;
3341
3342 if (bfd_seek (abfd, cmd->extrefsymoff, SEEK_SET) != 0)
3343 return -1;
3344
3345 for (i = 0; i < cmd->nextrefsyms; i++)
3346 {
3347 unsigned char raw[4];
3348 bfd_mach_o_dylib_reference *ref = &cmd->ext_refs[i];
3349
3350 if (bfd_bread (raw, sizeof (raw), abfd) != sizeof (raw))
3351 return -1;
3352
3353 /* Fields isym and flags are written as bit-fields, thus we need
3354 a specific processing for endianness. */
3355 v = bfd_h_get_32 (abfd, raw);
3356 if (bfd_big_endian (abfd))
3357 {
3358 ref->isym = (v >> 8) & 0xffffff;
3359 ref->flags = v & 0xff;
3360 }
3361 else
3362 {
3363 ref->isym = v & 0xffffff;
3364 ref->flags = (v >> 24) & 0xff;
3365 }
3366 }
3367 }
3368
3369 if (mdata->dysymtab)
3370 return -1;
3371 mdata->dysymtab = cmd;
3372
3373 return 0;
3374 }
3375
3376 static int
3377 bfd_mach_o_read_symtab (bfd *abfd, bfd_mach_o_load_command *command)
3378 {
3379 bfd_mach_o_symtab_command *symtab = &command->command.symtab;
3380 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
3381 struct mach_o_symtab_command_external raw;
3382
3383 BFD_ASSERT (command->type == BFD_MACH_O_LC_SYMTAB);
3384
3385 if (bfd_seek (abfd, command->offset + BFD_MACH_O_LC_SIZE, SEEK_SET) != 0
3386 || bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
3387 return -1;
3388
3389 symtab->symoff = bfd_h_get_32 (abfd, raw.symoff);
3390 symtab->nsyms = bfd_h_get_32 (abfd, raw.nsyms);
3391 symtab->stroff = bfd_h_get_32 (abfd, raw.stroff);
3392 symtab->strsize = bfd_h_get_32 (abfd, raw.strsize);
3393 symtab->symbols = NULL;
3394 symtab->strtab = NULL;
3395
3396 if (symtab->nsyms != 0)
3397 abfd->flags |= HAS_SYMS;
3398
3399 if (mdata->symtab)
3400 return -1;
3401 mdata->symtab = symtab;
3402 return 0;
3403 }
3404
3405 static int
3406 bfd_mach_o_read_uuid (bfd *abfd, bfd_mach_o_load_command *command)
3407 {
3408 bfd_mach_o_uuid_command *cmd = &command->command.uuid;
3409
3410 BFD_ASSERT (command->type == BFD_MACH_O_LC_UUID);
3411
3412 if (bfd_seek (abfd, command->offset + BFD_MACH_O_LC_SIZE, SEEK_SET) != 0
3413 || bfd_bread (cmd->uuid, 16, abfd) != 16)
3414 return -1;
3415
3416 return 0;
3417 }
3418
3419 static int
3420 bfd_mach_o_read_linkedit (bfd *abfd, bfd_mach_o_load_command *command)
3421 {
3422 bfd_mach_o_linkedit_command *cmd = &command->command.linkedit;
3423 struct mach_o_linkedit_data_command_external raw;
3424
3425 if (bfd_seek (abfd, command->offset + BFD_MACH_O_LC_SIZE, SEEK_SET) != 0
3426 || bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
3427 return -1;
3428
3429 cmd->dataoff = bfd_get_32 (abfd, raw.dataoff);
3430 cmd->datasize = bfd_get_32 (abfd, raw.datasize);
3431 return 0;
3432 }
3433
3434 static int
3435 bfd_mach_o_read_str (bfd *abfd, bfd_mach_o_load_command *command)
3436 {
3437 bfd_mach_o_str_command *cmd = &command->command.str;
3438 struct mach_o_str_command_external raw;
3439 unsigned long off;
3440
3441 if (bfd_seek (abfd, command->offset + BFD_MACH_O_LC_SIZE, SEEK_SET) != 0
3442 || bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
3443 return -1;
3444
3445 off = bfd_get_32 (abfd, raw.str);
3446 cmd->stroff = command->offset + off;
3447 cmd->str_len = command->len - off;
3448 cmd->str = bfd_alloc (abfd, cmd->str_len);
3449 if (cmd->str == NULL)
3450 return -1;
3451 if (bfd_seek (abfd, cmd->stroff, SEEK_SET) != 0
3452 || bfd_bread ((void *) cmd->str, cmd->str_len, abfd) != cmd->str_len)
3453 return -1;
3454 return 0;
3455 }
3456
3457 static int
3458 bfd_mach_o_read_dyld_info (bfd *abfd, bfd_mach_o_load_command *command)
3459 {
3460 bfd_mach_o_dyld_info_command *cmd = &command->command.dyld_info;
3461 struct mach_o_dyld_info_command_external raw;
3462
3463 if (bfd_seek (abfd, command->offset + BFD_MACH_O_LC_SIZE, SEEK_SET) != 0
3464 || bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
3465 return -1;
3466
3467 cmd->rebase_off = bfd_get_32 (abfd, raw.rebase_off);
3468 cmd->rebase_size = bfd_get_32 (abfd, raw.rebase_size);
3469 cmd->bind_off = bfd_get_32 (abfd, raw.bind_off);
3470 cmd->bind_size = bfd_get_32 (abfd, raw.bind_size);
3471 cmd->weak_bind_off = bfd_get_32 (abfd, raw.weak_bind_off);
3472 cmd->weak_bind_size = bfd_get_32 (abfd, raw.weak_bind_size);
3473 cmd->lazy_bind_off = bfd_get_32 (abfd, raw.lazy_bind_off);
3474 cmd->lazy_bind_size = bfd_get_32 (abfd, raw.lazy_bind_size);
3475 cmd->export_off = bfd_get_32 (abfd, raw.export_off);
3476 cmd->export_size = bfd_get_32 (abfd, raw.export_size);
3477 return 0;
3478 }
3479
3480 static bfd_boolean
3481 bfd_mach_o_read_version_min (bfd *abfd, bfd_mach_o_load_command *command)
3482 {
3483 bfd_mach_o_version_min_command *cmd = &command->command.version_min;
3484 struct mach_o_version_min_command_external raw;
3485 unsigned int ver;
3486
3487 if (bfd_seek (abfd, command->offset + BFD_MACH_O_LC_SIZE, SEEK_SET) != 0
3488 || bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
3489 return FALSE;
3490
3491 ver = bfd_get_32 (abfd, raw.version);
3492 cmd->rel = ver >> 16;
3493 cmd->maj = ver >> 8;
3494 cmd->min = ver;
3495 cmd->reserved = bfd_get_32 (abfd, raw.reserved);
3496 return TRUE;
3497 }
3498
3499 static bfd_boolean
3500 bfd_mach_o_read_encryption_info (bfd *abfd, bfd_mach_o_load_command *command)
3501 {
3502 bfd_mach_o_encryption_info_command *cmd = &command->command.encryption_info;
3503 struct mach_o_encryption_info_command_external raw;
3504
3505 if (bfd_seek (abfd, command->offset + BFD_MACH_O_LC_SIZE, SEEK_SET) != 0
3506 || bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
3507 return FALSE;
3508
3509 cmd->cryptoff = bfd_get_32 (abfd, raw.cryptoff);
3510 cmd->cryptsize = bfd_get_32 (abfd, raw.cryptsize);
3511 cmd->cryptid = bfd_get_32 (abfd, raw.cryptid);
3512 return TRUE;
3513 }
3514
3515 static int
3516 bfd_mach_o_read_segment (bfd *abfd,
3517 bfd_mach_o_load_command *command,
3518 unsigned int wide)
3519 {
3520 bfd_mach_o_segment_command *seg = &command->command.segment;
3521 unsigned long i;
3522
3523 if (wide)
3524 {
3525 struct mach_o_segment_command_64_external raw;
3526
3527 BFD_ASSERT (command->type == BFD_MACH_O_LC_SEGMENT_64);
3528
3529 if (bfd_seek (abfd, command->offset + BFD_MACH_O_LC_SIZE, SEEK_SET) != 0
3530 || bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
3531 return -1;
3532
3533 memcpy (seg->segname, raw.segname, 16);
3534 seg->segname[16] = '\0';
3535
3536 seg->vmaddr = bfd_h_get_64 (abfd, raw.vmaddr);
3537 seg->vmsize = bfd_h_get_64 (abfd, raw.vmsize);
3538 seg->fileoff = bfd_h_get_64 (abfd, raw.fileoff);
3539 seg->filesize = bfd_h_get_64 (abfd, raw.filesize);
3540 seg->maxprot = bfd_h_get_32 (abfd, raw.maxprot);
3541 seg->initprot = bfd_h_get_32 (abfd, raw.initprot);
3542 seg->nsects = bfd_h_get_32 (abfd, raw.nsects);
3543 seg->flags = bfd_h_get_32 (abfd, raw.flags);
3544 }
3545 else
3546 {
3547 struct mach_o_segment_command_32_external raw;
3548
3549 BFD_ASSERT (command->type == BFD_MACH_O_LC_SEGMENT);
3550
3551 if (bfd_seek (abfd, command->offset + BFD_MACH_O_LC_SIZE, SEEK_SET) != 0
3552 || bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
3553 return -1;
3554
3555 memcpy (seg->segname, raw.segname, 16);
3556 seg->segname[16] = '\0';
3557
3558 seg->vmaddr = bfd_h_get_32 (abfd, raw.vmaddr);
3559 seg->vmsize = bfd_h_get_32 (abfd, raw.vmsize);
3560 seg->fileoff = bfd_h_get_32 (abfd, raw.fileoff);
3561 seg->filesize = bfd_h_get_32 (abfd, raw.filesize);
3562 seg->maxprot = bfd_h_get_32 (abfd, raw.maxprot);
3563 seg->initprot = bfd_h_get_32 (abfd, raw.initprot);
3564 seg->nsects = bfd_h_get_32 (abfd, raw.nsects);
3565 seg->flags = bfd_h_get_32 (abfd, raw.flags);
3566 }
3567 seg->sect_head = NULL;
3568 seg->sect_tail = NULL;
3569
3570 for (i = 0; i < seg->nsects; i++)
3571 {
3572 bfd_vma segoff;
3573 asection *sec;
3574
3575 if (wide)
3576 segoff = command->offset + BFD_MACH_O_LC_SEGMENT_64_SIZE
3577 + (i * BFD_MACH_O_SECTION_64_SIZE);
3578 else
3579 segoff = command->offset + BFD_MACH_O_LC_SEGMENT_SIZE
3580 + (i * BFD_MACH_O_SECTION_SIZE);
3581
3582 sec = bfd_mach_o_read_section (abfd, segoff, seg->initprot, wide);
3583 if (sec == NULL)
3584 return -1;
3585
3586 bfd_mach_o_append_section_to_segment (seg, sec);
3587 }
3588
3589 return 0;
3590 }
3591
3592 static int
3593 bfd_mach_o_read_segment_32 (bfd *abfd, bfd_mach_o_load_command *command)
3594 {
3595 return bfd_mach_o_read_segment (abfd, command, 0);
3596 }
3597
3598 static int
3599 bfd_mach_o_read_segment_64 (bfd *abfd, bfd_mach_o_load_command *command)
3600 {
3601 return bfd_mach_o_read_segment (abfd, command, 1);
3602 }
3603
3604 static int
3605 bfd_mach_o_read_command (bfd *abfd, bfd_mach_o_load_command *command)
3606 {
3607 struct mach_o_load_command_external raw;
3608 unsigned int cmd;
3609
3610 /* Read command type and length. */
3611 if (bfd_seek (abfd, command->offset, SEEK_SET) != 0
3612 || bfd_bread (&raw, BFD_MACH_O_LC_SIZE, abfd) != BFD_MACH_O_LC_SIZE)
3613 return -1;
3614
3615 cmd = bfd_h_get_32 (abfd, raw.cmd);
3616 command->type = cmd & ~BFD_MACH_O_LC_REQ_DYLD;
3617 command->type_required = cmd & BFD_MACH_O_LC_REQ_DYLD ? TRUE : FALSE;
3618 command->len = bfd_h_get_32 (abfd, raw.cmdsize);
3619
3620 switch (command->type)
3621 {
3622 case BFD_MACH_O_LC_SEGMENT:
3623 if (bfd_mach_o_read_segment_32 (abfd, command) != 0)
3624 return -1;
3625 break;
3626 case BFD_MACH_O_LC_SEGMENT_64:
3627 if (bfd_mach_o_read_segment_64 (abfd, command) != 0)
3628 return -1;
3629 break;
3630 case BFD_MACH_O_LC_SYMTAB:
3631 if (bfd_mach_o_read_symtab (abfd, command) != 0)
3632 return -1;
3633 break;
3634 case BFD_MACH_O_LC_SYMSEG:
3635 break;
3636 case BFD_MACH_O_LC_THREAD:
3637 case BFD_MACH_O_LC_UNIXTHREAD:
3638 if (bfd_mach_o_read_thread (abfd, command) != 0)
3639 return -1;
3640 break;
3641 case BFD_MACH_O_LC_LOAD_DYLINKER:
3642 case BFD_MACH_O_LC_ID_DYLINKER:
3643 if (bfd_mach_o_read_dylinker (abfd, command) != 0)
3644 return -1;
3645 break;
3646 case BFD_MACH_O_LC_LOAD_DYLIB:
3647 case BFD_MACH_O_LC_ID_DYLIB:
3648 case BFD_MACH_O_LC_LOAD_WEAK_DYLIB:
3649 case BFD_MACH_O_LC_REEXPORT_DYLIB:
3650 case BFD_MACH_O_LC_LOAD_UPWARD_DYLIB:
3651 if (bfd_mach_o_read_dylib (abfd, command) != 0)
3652 return -1;
3653 break;
3654 case BFD_MACH_O_LC_PREBOUND_DYLIB:
3655 if (bfd_mach_o_read_prebound_dylib (abfd, command) != 0)
3656 return -1;
3657 break;
3658 case BFD_MACH_O_LC_LOADFVMLIB:
3659 case BFD_MACH_O_LC_IDFVMLIB:
3660 if (bfd_mach_o_read_fvmlib (abfd, command) != 0)
3661 return -1;
3662 break;
3663 case BFD_MACH_O_LC_IDENT:
3664 case BFD_MACH_O_LC_FVMFILE:
3665 case BFD_MACH_O_LC_PREPAGE:
3666 case BFD_MACH_O_LC_ROUTINES:
3667 case BFD_MACH_O_LC_ROUTINES_64:
3668 break;
3669 case BFD_MACH_O_LC_SUB_FRAMEWORK:
3670 case BFD_MACH_O_LC_SUB_UMBRELLA:
3671 case BFD_MACH_O_LC_SUB_LIBRARY:
3672 case BFD_MACH_O_LC_SUB_CLIENT:
3673 case BFD_MACH_O_LC_RPATH:
3674 if (bfd_mach_o_read_str (abfd, command) != 0)
3675 return -1;
3676 break;
3677 case BFD_MACH_O_LC_DYSYMTAB:
3678 if (bfd_mach_o_read_dysymtab (abfd, command) != 0)
3679 return -1;
3680 break;
3681 case BFD_MACH_O_LC_TWOLEVEL_HINTS:
3682 case BFD_MACH_O_LC_PREBIND_CKSUM:
3683 break;
3684 case BFD_MACH_O_LC_UUID:
3685 if (bfd_mach_o_read_uuid (abfd, command) != 0)
3686 return -1;
3687 break;
3688 case BFD_MACH_O_LC_CODE_SIGNATURE:
3689 case BFD_MACH_O_LC_SEGMENT_SPLIT_INFO:
3690 case BFD_MACH_O_LC_FUNCTION_STARTS:
3691 if (bfd_mach_o_read_linkedit (abfd, command) != 0)
3692 return -1;
3693 break;
3694 case BFD_MACH_O_LC_ENCRYPTION_INFO:
3695 if (!bfd_mach_o_read_encryption_info (abfd, command))
3696 return -1;
3697 break;
3698 case BFD_MACH_O_LC_DYLD_INFO:
3699 if (bfd_mach_o_read_dyld_info (abfd, command) != 0)
3700 return -1;
3701 break;
3702 case BFD_MACH_O_LC_VERSION_MIN_MACOSX:
3703 case BFD_MACH_O_LC_VERSION_MIN_IPHONEOS:
3704 if (!bfd_mach_o_read_version_min (abfd, command))
3705 return -1;
3706 break;
3707 default:
3708 (*_bfd_error_handler)(_("%B: unknown load command 0x%lx"),
3709 abfd, (unsigned long) command->type);
3710 break;
3711 }
3712
3713 return 0;
3714 }
3715
3716 static void
3717 bfd_mach_o_flatten_sections (bfd *abfd)
3718 {
3719 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
3720 long csect = 0;
3721 unsigned long i;
3722
3723 /* Count total number of sections. */
3724 mdata->nsects = 0;
3725
3726 for (i = 0; i < mdata->header.ncmds; i++)
3727 {
3728 if (mdata->commands[i].type == BFD_MACH_O_LC_SEGMENT
3729 || mdata->commands[i].type == BFD_MACH_O_LC_SEGMENT_64)
3730 {
3731 bfd_mach_o_segment_command *seg;
3732
3733 seg = &mdata->commands[i].command.segment;
3734 mdata->nsects += seg->nsects;
3735 }
3736 }
3737
3738 /* Allocate sections array. */
3739 mdata->sections = bfd_alloc (abfd,
3740 mdata->nsects * sizeof (bfd_mach_o_section *));
3741
3742 /* Fill the array. */
3743 csect = 0;
3744
3745 for (i = 0; i < mdata->header.ncmds; i++)
3746 {
3747 if (mdata->commands[i].type == BFD_MACH_O_LC_SEGMENT
3748 || mdata->commands[i].type == BFD_MACH_O_LC_SEGMENT_64)
3749 {
3750 bfd_mach_o_segment_command *seg;
3751 bfd_mach_o_section *sec;
3752
3753 seg = &mdata->commands[i].command.segment;
3754 BFD_ASSERT (csect + seg->nsects <= mdata->nsects);
3755
3756 for (sec = seg->sect_head; sec != NULL; sec = sec->next)
3757 mdata->sections[csect++] = sec;
3758 }
3759 }
3760 }
3761
3762 static bfd_boolean
3763 bfd_mach_o_scan_start_address (bfd *abfd)
3764 {
3765 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
3766 bfd_mach_o_thread_command *cmd = NULL;
3767 unsigned long i;
3768
3769 for (i = 0; i < mdata->header.ncmds; i++)
3770 if ((mdata->commands[i].type == BFD_MACH_O_LC_THREAD) ||
3771 (mdata->commands[i].type == BFD_MACH_O_LC_UNIXTHREAD))
3772 {
3773 cmd = &mdata->commands[i].command.thread;
3774 break;
3775 }
3776
3777 if (cmd == NULL)
3778 return FALSE;
3779
3780 /* FIXME: create a subtarget hook ? */
3781 for (i = 0; i < cmd->nflavours; i++)
3782 {
3783 if ((mdata->header.cputype == BFD_MACH_O_CPU_TYPE_I386)
3784 && (cmd->flavours[i].flavour
3785 == (unsigned long) BFD_MACH_O_x86_THREAD_STATE32))
3786 {
3787 unsigned char buf[4];
3788
3789 if (bfd_seek (abfd, cmd->flavours[i].offset + 40, SEEK_SET) != 0
3790 || bfd_bread (buf, 4, abfd) != 4)
3791 return FALSE;
3792
3793 abfd->start_address = bfd_h_get_32 (abfd, buf);
3794 }
3795 else if ((mdata->header.cputype == BFD_MACH_O_CPU_TYPE_POWERPC)
3796 && (cmd->flavours[i].flavour == BFD_MACH_O_PPC_THREAD_STATE))
3797 {
3798 unsigned char buf[4];
3799
3800 if (bfd_seek (abfd, cmd->flavours[i].offset + 0, 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_64)
3807 && (cmd->flavours[i].flavour == BFD_MACH_O_PPC_THREAD_STATE64))
3808 {
3809 unsigned char buf[8];
3810
3811 if (bfd_seek (abfd, cmd->flavours[i].offset + 0, SEEK_SET) != 0
3812 || bfd_bread (buf, 8, abfd) != 8)
3813 return FALSE;
3814
3815 abfd->start_address = bfd_h_get_64 (abfd, buf);
3816 }
3817 else if ((mdata->header.cputype == BFD_MACH_O_CPU_TYPE_X86_64)
3818 && (cmd->flavours[i].flavour == BFD_MACH_O_x86_THREAD_STATE64))
3819 {
3820 unsigned char buf[8];
3821
3822 if (bfd_seek (abfd, cmd->flavours[i].offset + (16 * 8), 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 }
3829
3830 return TRUE;
3831 }
3832
3833 bfd_boolean
3834 bfd_mach_o_set_arch_mach (bfd *abfd,
3835 enum bfd_architecture arch,
3836 unsigned long machine)
3837 {
3838 bfd_mach_o_backend_data *bed = bfd_mach_o_get_backend_data (abfd);
3839
3840 /* If this isn't the right architecture for this backend, and this
3841 isn't the generic backend, fail. */
3842 if (arch != bed->arch
3843 && arch != bfd_arch_unknown
3844 && bed->arch != bfd_arch_unknown)
3845 return FALSE;
3846
3847 return bfd_default_set_arch_mach (abfd, arch, machine);
3848 }
3849
3850 static bfd_boolean
3851 bfd_mach_o_scan (bfd *abfd,
3852 bfd_mach_o_header *header,
3853 bfd_mach_o_data_struct *mdata)
3854 {
3855 unsigned int i;
3856 enum bfd_architecture cputype;
3857 unsigned long cpusubtype;
3858 unsigned int hdrsize;
3859
3860 hdrsize = mach_o_wide_p (header) ?
3861 BFD_MACH_O_HEADER_64_SIZE : BFD_MACH_O_HEADER_SIZE;
3862
3863 mdata->header = *header;
3864
3865 abfd->flags = abfd->flags & BFD_IN_MEMORY;
3866 switch (header->filetype)
3867 {
3868 case BFD_MACH_O_MH_OBJECT:
3869 abfd->flags |= HAS_RELOC;
3870 break;
3871 case BFD_MACH_O_MH_EXECUTE:
3872 abfd->flags |= EXEC_P;
3873 break;
3874 case BFD_MACH_O_MH_DYLIB:
3875 case BFD_MACH_O_MH_BUNDLE:
3876 abfd->flags |= DYNAMIC;
3877 break;
3878 }
3879
3880 abfd->tdata.mach_o_data = mdata;
3881
3882 bfd_mach_o_convert_architecture (header->cputype, header->cpusubtype,
3883 &cputype, &cpusubtype);
3884 if (cputype == bfd_arch_unknown)
3885 {
3886 (*_bfd_error_handler)
3887 (_("bfd_mach_o_scan: unknown architecture 0x%lx/0x%lx"),
3888 header->cputype, header->cpusubtype);
3889 return FALSE;
3890 }
3891
3892 bfd_set_arch_mach (abfd, cputype, cpusubtype);
3893
3894 if (header->ncmds != 0)
3895 {
3896 mdata->commands = bfd_alloc
3897 (abfd, header->ncmds * sizeof (bfd_mach_o_load_command));
3898 if (mdata->commands == NULL)
3899 return FALSE;
3900
3901 for (i = 0; i < header->ncmds; i++)
3902 {
3903 bfd_mach_o_load_command *cur = &mdata->commands[i];
3904
3905 if (i == 0)
3906 cur->offset = hdrsize;
3907 else
3908 {
3909 bfd_mach_o_load_command *prev = &mdata->commands[i - 1];
3910 cur->offset = prev->offset + prev->len;
3911 }
3912
3913 if (bfd_mach_o_read_command (abfd, cur) < 0)
3914 return FALSE;
3915 }
3916 }
3917
3918 if (bfd_mach_o_scan_start_address (abfd) < 0)
3919 return FALSE;
3920
3921 bfd_mach_o_flatten_sections (abfd);
3922 return TRUE;
3923 }
3924
3925 bfd_boolean
3926 bfd_mach_o_mkobject_init (bfd *abfd)
3927 {
3928 bfd_mach_o_data_struct *mdata = NULL;
3929
3930 mdata = bfd_alloc (abfd, sizeof (bfd_mach_o_data_struct));
3931 if (mdata == NULL)
3932 return FALSE;
3933 abfd->tdata.mach_o_data = mdata;
3934
3935 mdata->header.magic = 0;
3936 mdata->header.cputype = 0;
3937 mdata->header.cpusubtype = 0;
3938 mdata->header.filetype = 0;
3939 mdata->header.ncmds = 0;
3940 mdata->header.sizeofcmds = 0;
3941 mdata->header.flags = 0;
3942 mdata->header.byteorder = BFD_ENDIAN_UNKNOWN;
3943 mdata->commands = NULL;
3944 mdata->nsects = 0;
3945 mdata->sections = NULL;
3946 mdata->dyn_reloc_cache = NULL;
3947
3948 return TRUE;
3949 }
3950
3951 static bfd_boolean
3952 bfd_mach_o_gen_mkobject (bfd *abfd)
3953 {
3954 bfd_mach_o_data_struct *mdata;
3955
3956 if (!bfd_mach_o_mkobject_init (abfd))
3957 return FALSE;
3958
3959 mdata = bfd_mach_o_get_data (abfd);
3960 mdata->header.magic = BFD_MACH_O_MH_MAGIC;
3961 mdata->header.cputype = 0;
3962 mdata->header.cpusubtype = 0;
3963 mdata->header.byteorder = abfd->xvec->byteorder;
3964 mdata->header.version = 1;
3965
3966 return TRUE;
3967 }
3968
3969 const bfd_target *
3970 bfd_mach_o_header_p (bfd *abfd,
3971 bfd_mach_o_filetype filetype,
3972 bfd_mach_o_cpu_type cputype)
3973 {
3974 struct bfd_preserve preserve;
3975 bfd_mach_o_header header;
3976
3977 preserve.marker = NULL;
3978 if (!bfd_mach_o_read_header (abfd, &header))
3979 goto wrong;
3980
3981 if (! (header.byteorder == BFD_ENDIAN_BIG
3982 || header.byteorder == BFD_ENDIAN_LITTLE))
3983 {
3984 (*_bfd_error_handler) (_("unknown header byte-order value 0x%lx"),
3985 (unsigned long) header.byteorder);
3986 goto wrong;
3987 }
3988
3989 if (! ((header.byteorder == BFD_ENDIAN_BIG
3990 && abfd->xvec->byteorder == BFD_ENDIAN_BIG
3991 && abfd->xvec->header_byteorder == BFD_ENDIAN_BIG)
3992 || (header.byteorder == BFD_ENDIAN_LITTLE
3993 && abfd->xvec->byteorder == BFD_ENDIAN_LITTLE
3994 && abfd->xvec->header_byteorder == BFD_ENDIAN_LITTLE)))
3995 goto wrong;
3996
3997 /* Check cputype and filetype.
3998 In case of wildcard, do not accept magics that are handled by existing
3999 targets. */
4000 if (cputype)
4001 {
4002 if (header.cputype != cputype)
4003 goto wrong;
4004 }
4005
4006 if (filetype)
4007 {
4008 if (header.filetype != filetype)
4009 goto wrong;
4010 }
4011 else
4012 {
4013 switch (header.filetype)
4014 {
4015 case BFD_MACH_O_MH_CORE:
4016 /* Handled by core_p */
4017 goto wrong;
4018 default:
4019 break;
4020 }
4021 }
4022
4023 preserve.marker = bfd_zalloc (abfd, sizeof (bfd_mach_o_data_struct));
4024 if (preserve.marker == NULL
4025 || !bfd_preserve_save (abfd, &preserve))
4026 goto fail;
4027
4028 if (!bfd_mach_o_scan (abfd, &header,
4029 (bfd_mach_o_data_struct *) preserve.marker))
4030 goto wrong;
4031
4032 bfd_preserve_finish (abfd, &preserve);
4033 return abfd->xvec;
4034
4035 wrong:
4036 bfd_set_error (bfd_error_wrong_format);
4037
4038 fail:
4039 if (preserve.marker != NULL)
4040 bfd_preserve_restore (abfd, &preserve);
4041 return NULL;
4042 }
4043
4044 static const bfd_target *
4045 bfd_mach_o_gen_object_p (bfd *abfd)
4046 {
4047 return bfd_mach_o_header_p (abfd, 0, 0);
4048 }
4049
4050 static const bfd_target *
4051 bfd_mach_o_gen_core_p (bfd *abfd)
4052 {
4053 return bfd_mach_o_header_p (abfd, BFD_MACH_O_MH_CORE, 0);
4054 }
4055
4056 typedef struct mach_o_fat_archentry
4057 {
4058 unsigned long cputype;
4059 unsigned long cpusubtype;
4060 unsigned long offset;
4061 unsigned long size;
4062 unsigned long align;
4063 } mach_o_fat_archentry;
4064
4065 typedef struct mach_o_fat_data_struct
4066 {
4067 unsigned long magic;
4068 unsigned long nfat_arch;
4069 mach_o_fat_archentry *archentries;
4070 } mach_o_fat_data_struct;
4071
4072 const bfd_target *
4073 bfd_mach_o_archive_p (bfd *abfd)
4074 {
4075 mach_o_fat_data_struct *adata = NULL;
4076 struct mach_o_fat_header_external hdr;
4077 unsigned long i;
4078
4079 if (bfd_seek (abfd, 0, SEEK_SET) != 0
4080 || bfd_bread (&hdr, sizeof (hdr), abfd) != sizeof (hdr))
4081 goto error;
4082
4083 adata = bfd_alloc (abfd, sizeof (mach_o_fat_data_struct));
4084 if (adata == NULL)
4085 goto error;
4086
4087 adata->magic = bfd_getb32 (hdr.magic);
4088 adata->nfat_arch = bfd_getb32 (hdr.nfat_arch);
4089 if (adata->magic != 0xcafebabe)
4090 goto error;
4091 /* Avoid matching Java bytecode files, which have the same magic number.
4092 In the Java bytecode file format this field contains the JVM version,
4093 which starts at 43.0. */
4094 if (adata->nfat_arch > 30)
4095 goto error;
4096
4097 adata->archentries =
4098 bfd_alloc (abfd, adata->nfat_arch * sizeof (mach_o_fat_archentry));
4099 if (adata->archentries == NULL)
4100 goto error;
4101
4102 for (i = 0; i < adata->nfat_arch; i++)
4103 {
4104 struct mach_o_fat_arch_external arch;
4105 if (bfd_bread (&arch, sizeof (arch), abfd) != sizeof (arch))
4106 goto error;
4107 adata->archentries[i].cputype = bfd_getb32 (arch.cputype);
4108 adata->archentries[i].cpusubtype = bfd_getb32 (arch.cpusubtype);
4109 adata->archentries[i].offset = bfd_getb32 (arch.offset);
4110 adata->archentries[i].size = bfd_getb32 (arch.size);
4111 adata->archentries[i].align = bfd_getb32 (arch.align);
4112 }
4113
4114 abfd->tdata.mach_o_fat_data = adata;
4115 return abfd->xvec;
4116
4117 error:
4118 if (adata != NULL)
4119 bfd_release (abfd, adata);
4120 bfd_set_error (bfd_error_wrong_format);
4121 return NULL;
4122 }
4123
4124 /* Set the filename for a fat binary member ABFD, whose bfd architecture is
4125 ARCH_TYPE/ARCH_SUBTYPE and corresponding entry in header is ENTRY.
4126 Set arelt_data and origin fields too. */
4127
4128 static void
4129 bfd_mach_o_fat_member_init (bfd *abfd,
4130 enum bfd_architecture arch_type,
4131 unsigned long arch_subtype,
4132 mach_o_fat_archentry *entry)
4133 {
4134 struct areltdata *areltdata;
4135 /* Create the member filename. Use ARCH_NAME. */
4136 const bfd_arch_info_type *ap = bfd_lookup_arch (arch_type, arch_subtype);
4137
4138 if (ap)
4139 {
4140 /* Use the architecture name if known. */
4141 abfd->filename = ap->printable_name;
4142 }
4143 else
4144 {
4145 /* Forge a uniq id. */
4146 const size_t namelen = 2 + 8 + 1 + 2 + 8 + 1;
4147 char *name = bfd_alloc (abfd, namelen);
4148 snprintf (name, namelen, "0x%lx-0x%lx",
4149 entry->cputype, entry->cpusubtype);
4150 abfd->filename = name;
4151 }
4152
4153 areltdata = bfd_zalloc (abfd, sizeof (struct areltdata));
4154 areltdata->parsed_size = entry->size;
4155 abfd->arelt_data = areltdata;
4156 abfd->iostream = NULL;
4157 abfd->origin = entry->offset;
4158 }
4159
4160 bfd *
4161 bfd_mach_o_openr_next_archived_file (bfd *archive, bfd *prev)
4162 {
4163 mach_o_fat_data_struct *adata;
4164 mach_o_fat_archentry *entry = NULL;
4165 unsigned long i;
4166 bfd *nbfd;
4167 enum bfd_architecture arch_type;
4168 unsigned long arch_subtype;
4169
4170 adata = (mach_o_fat_data_struct *) archive->tdata.mach_o_fat_data;
4171 BFD_ASSERT (adata != NULL);
4172
4173 /* Find index of previous entry. */
4174 if (prev == NULL)
4175 {
4176 /* Start at first one. */
4177 i = 0;
4178 }
4179 else
4180 {
4181 /* Find index of PREV. */
4182 for (i = 0; i < adata->nfat_arch; i++)
4183 {
4184 if (adata->archentries[i].offset == prev->origin)
4185 break;
4186 }
4187
4188 if (i == adata->nfat_arch)
4189 {
4190 /* Not found. */
4191 bfd_set_error (bfd_error_bad_value);
4192 return NULL;
4193 }
4194
4195 /* Get next entry. */
4196 i++;
4197 }
4198
4199 if (i >= adata->nfat_arch)
4200 {
4201 bfd_set_error (bfd_error_no_more_archived_files);
4202 return NULL;
4203 }
4204
4205 entry = &adata->archentries[i];
4206 nbfd = _bfd_new_bfd_contained_in (archive);
4207 if (nbfd == NULL)
4208 return NULL;
4209
4210 bfd_mach_o_convert_architecture (entry->cputype, entry->cpusubtype,
4211 &arch_type, &arch_subtype);
4212
4213 bfd_mach_o_fat_member_init (nbfd, arch_type, arch_subtype, entry);
4214
4215 bfd_set_arch_mach (nbfd, arch_type, arch_subtype);
4216
4217 return nbfd;
4218 }
4219
4220 /* Analogous to stat call. */
4221
4222 static int
4223 bfd_mach_o_fat_stat_arch_elt (bfd *abfd, struct stat *buf)
4224 {
4225 if (abfd->arelt_data == NULL)
4226 {
4227 bfd_set_error (bfd_error_invalid_operation);
4228 return -1;
4229 }
4230
4231 buf->st_mtime = 0;
4232 buf->st_uid = 0;
4233 buf->st_gid = 0;
4234 buf->st_mode = 0644;
4235 buf->st_size = arelt_size (abfd);
4236
4237 return 0;
4238 }
4239
4240 /* If ABFD format is FORMAT and architecture is ARCH, return it.
4241 If ABFD is a fat image containing a member that corresponds to FORMAT
4242 and ARCH, returns it.
4243 In other case, returns NULL.
4244 This function allows transparent uses of fat images. */
4245
4246 bfd *
4247 bfd_mach_o_fat_extract (bfd *abfd,
4248 bfd_format format,
4249 const bfd_arch_info_type *arch)
4250 {
4251 bfd *res;
4252 mach_o_fat_data_struct *adata;
4253 unsigned int i;
4254
4255 if (bfd_check_format (abfd, format))
4256 {
4257 if (bfd_get_arch_info (abfd) == arch)
4258 return abfd;
4259 return NULL;
4260 }
4261 if (!bfd_check_format (abfd, bfd_archive)
4262 || abfd->xvec != &mach_o_fat_vec)
4263 return NULL;
4264
4265 /* This is a Mach-O fat image. */
4266 adata = (mach_o_fat_data_struct *) abfd->tdata.mach_o_fat_data;
4267 BFD_ASSERT (adata != NULL);
4268
4269 for (i = 0; i < adata->nfat_arch; i++)
4270 {
4271 struct mach_o_fat_archentry *e = &adata->archentries[i];
4272 enum bfd_architecture cpu_type;
4273 unsigned long cpu_subtype;
4274
4275 bfd_mach_o_convert_architecture (e->cputype, e->cpusubtype,
4276 &cpu_type, &cpu_subtype);
4277 if (cpu_type != arch->arch || cpu_subtype != arch->mach)
4278 continue;
4279
4280 /* The architecture is found. */
4281 res = _bfd_new_bfd_contained_in (abfd);
4282 if (res == NULL)
4283 return NULL;
4284
4285 bfd_mach_o_fat_member_init (res, cpu_type, cpu_subtype, e);
4286
4287 if (bfd_check_format (res, format))
4288 {
4289 BFD_ASSERT (bfd_get_arch_info (res) == arch);
4290 return res;
4291 }
4292 bfd_close (res);
4293 return NULL;
4294 }
4295
4296 return NULL;
4297 }
4298
4299 int
4300 bfd_mach_o_lookup_command (bfd *abfd,
4301 bfd_mach_o_load_command_type type,
4302 bfd_mach_o_load_command **mcommand)
4303 {
4304 struct mach_o_data_struct *md = bfd_mach_o_get_data (abfd);
4305 bfd_mach_o_load_command *ncmd = NULL;
4306 unsigned int i, num;
4307
4308 BFD_ASSERT (md != NULL);
4309 BFD_ASSERT (mcommand != NULL);
4310
4311 num = 0;
4312 for (i = 0; i < md->header.ncmds; i++)
4313 {
4314 struct bfd_mach_o_load_command *cmd = &md->commands[i];
4315
4316 if (cmd->type != type)
4317 continue;
4318
4319 if (num == 0)
4320 ncmd = cmd;
4321 num++;
4322 }
4323
4324 *mcommand = ncmd;
4325 return num;
4326 }
4327
4328 unsigned long
4329 bfd_mach_o_stack_addr (enum bfd_mach_o_cpu_type type)
4330 {
4331 switch (type)
4332 {
4333 case BFD_MACH_O_CPU_TYPE_MC680x0:
4334 return 0x04000000;
4335 case BFD_MACH_O_CPU_TYPE_MC88000:
4336 return 0xffffe000;
4337 case BFD_MACH_O_CPU_TYPE_POWERPC:
4338 return 0xc0000000;
4339 case BFD_MACH_O_CPU_TYPE_I386:
4340 return 0xc0000000;
4341 case BFD_MACH_O_CPU_TYPE_SPARC:
4342 return 0xf0000000;
4343 case BFD_MACH_O_CPU_TYPE_I860:
4344 return 0;
4345 case BFD_MACH_O_CPU_TYPE_HPPA:
4346 return 0xc0000000 - 0x04000000;
4347 default:
4348 return 0;
4349 }
4350 }
4351
4352 /* The following two tables should be kept, as far as possible, in order of
4353 most frequently used entries to optimize their use from gas. */
4354
4355 const bfd_mach_o_xlat_name bfd_mach_o_section_type_name[] =
4356 {
4357 { "regular", BFD_MACH_O_S_REGULAR},
4358 { "coalesced", BFD_MACH_O_S_COALESCED},
4359 { "zerofill", BFD_MACH_O_S_ZEROFILL},
4360 { "cstring_literals", BFD_MACH_O_S_CSTRING_LITERALS},
4361 { "4byte_literals", BFD_MACH_O_S_4BYTE_LITERALS},
4362 { "8byte_literals", BFD_MACH_O_S_8BYTE_LITERALS},
4363 { "16byte_literals", BFD_MACH_O_S_16BYTE_LITERALS},
4364 { "literal_pointers", BFD_MACH_O_S_LITERAL_POINTERS},
4365 { "mod_init_func_pointers", BFD_MACH_O_S_MOD_INIT_FUNC_POINTERS},
4366 { "mod_fini_func_pointers", BFD_MACH_O_S_MOD_FINI_FUNC_POINTERS},
4367 { "gb_zerofill", BFD_MACH_O_S_GB_ZEROFILL},
4368 { "interposing", BFD_MACH_O_S_INTERPOSING},
4369 { "dtrace_dof", BFD_MACH_O_S_DTRACE_DOF},
4370 { "non_lazy_symbol_pointers", BFD_MACH_O_S_NON_LAZY_SYMBOL_POINTERS},
4371 { "lazy_symbol_pointers", BFD_MACH_O_S_LAZY_SYMBOL_POINTERS},
4372 { "symbol_stubs", BFD_MACH_O_S_SYMBOL_STUBS},
4373 { "lazy_dylib_symbol_pointers", BFD_MACH_O_S_LAZY_DYLIB_SYMBOL_POINTERS},
4374 { NULL, 0}
4375 };
4376
4377 const bfd_mach_o_xlat_name bfd_mach_o_section_attribute_name[] =
4378 {
4379 { "pure_instructions", BFD_MACH_O_S_ATTR_PURE_INSTRUCTIONS },
4380 { "some_instructions", BFD_MACH_O_S_ATTR_SOME_INSTRUCTIONS },
4381 { "loc_reloc", BFD_MACH_O_S_ATTR_LOC_RELOC },
4382 { "ext_reloc", BFD_MACH_O_S_ATTR_EXT_RELOC },
4383 { "debug", BFD_MACH_O_S_ATTR_DEBUG },
4384 { "live_support", BFD_MACH_O_S_ATTR_LIVE_SUPPORT },
4385 { "no_dead_strip", BFD_MACH_O_S_ATTR_NO_DEAD_STRIP },
4386 { "strip_static_syms", BFD_MACH_O_S_ATTR_STRIP_STATIC_SYMS },
4387 { "no_toc", BFD_MACH_O_S_ATTR_NO_TOC },
4388 { "self_modifying_code", BFD_MACH_O_S_SELF_MODIFYING_CODE },
4389 { "modifying_code", BFD_MACH_O_S_SELF_MODIFYING_CODE },
4390 { NULL, 0}
4391 };
4392
4393 /* Get the section type from NAME. Return 256 if NAME is unknown. */
4394
4395 unsigned int
4396 bfd_mach_o_get_section_type_from_name (bfd *abfd, const char *name)
4397 {
4398 const bfd_mach_o_xlat_name *x;
4399 bfd_mach_o_backend_data *bed = bfd_mach_o_get_backend_data (abfd);
4400
4401 for (x = bfd_mach_o_section_type_name; x->name; x++)
4402 if (strcmp (x->name, name) == 0)
4403 {
4404 /* We found it... does the target support it? */
4405 if (bed->bfd_mach_o_section_type_valid_for_target == NULL
4406 || bed->bfd_mach_o_section_type_valid_for_target (x->val))
4407 return x->val; /* OK. */
4408 else
4409 break; /* Not supported. */
4410 }
4411 /* Maximum section ID = 0xff. */
4412 return 256;
4413 }
4414
4415 /* Get the section attribute from NAME. Return -1 if NAME is unknown. */
4416
4417 unsigned int
4418 bfd_mach_o_get_section_attribute_from_name (const char *name)
4419 {
4420 const bfd_mach_o_xlat_name *x;
4421
4422 for (x = bfd_mach_o_section_attribute_name; x->name; x++)
4423 if (strcmp (x->name, name) == 0)
4424 return x->val;
4425 return (unsigned int)-1;
4426 }
4427
4428 int
4429 bfd_mach_o_core_fetch_environment (bfd *abfd,
4430 unsigned char **rbuf,
4431 unsigned int *rlen)
4432 {
4433 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
4434 unsigned long stackaddr = bfd_mach_o_stack_addr (mdata->header.cputype);
4435 unsigned int i = 0;
4436
4437 for (i = 0; i < mdata->header.ncmds; i++)
4438 {
4439 bfd_mach_o_load_command *cur = &mdata->commands[i];
4440 bfd_mach_o_segment_command *seg = NULL;
4441
4442 if (cur->type != BFD_MACH_O_LC_SEGMENT)
4443 continue;
4444
4445 seg = &cur->command.segment;
4446
4447 if ((seg->vmaddr + seg->vmsize) == stackaddr)
4448 {
4449 unsigned long start = seg->fileoff;
4450 unsigned long end = seg->fileoff + seg->filesize;
4451 unsigned char *buf = bfd_malloc (1024);
4452 unsigned long size = 1024;
4453
4454 for (;;)
4455 {
4456 bfd_size_type nread = 0;
4457 unsigned long offset;
4458 int found_nonnull = 0;
4459
4460 if (size > (end - start))
4461 size = (end - start);
4462
4463 buf = bfd_realloc_or_free (buf, size);
4464 if (buf == NULL)
4465 return -1;
4466
4467 if (bfd_seek (abfd, end - size, SEEK_SET) != 0)
4468 {
4469 free (buf);
4470 return -1;
4471 }
4472
4473 nread = bfd_bread (buf, size, abfd);
4474
4475 if (nread != size)
4476 {
4477 free (buf);
4478 return -1;
4479 }
4480
4481 for (offset = 4; offset <= size; offset += 4)
4482 {
4483 unsigned long val;
4484
4485 val = *((unsigned long *) (buf + size - offset));
4486 if (! found_nonnull)
4487 {
4488 if (val != 0)
4489 found_nonnull = 1;
4490 }
4491 else if (val == 0x0)
4492 {
4493 unsigned long bottom;
4494 unsigned long top;
4495
4496 bottom = seg->fileoff + seg->filesize - offset;
4497 top = seg->fileoff + seg->filesize - 4;
4498 *rbuf = bfd_malloc (top - bottom);
4499 *rlen = top - bottom;
4500
4501 memcpy (*rbuf, buf + size - *rlen, *rlen);
4502 free (buf);
4503 return 0;
4504 }
4505 }
4506
4507 if (size == (end - start))
4508 break;
4509
4510 size *= 2;
4511 }
4512
4513 free (buf);
4514 }
4515 }
4516
4517 return -1;
4518 }
4519
4520 char *
4521 bfd_mach_o_core_file_failing_command (bfd *abfd)
4522 {
4523 unsigned char *buf = NULL;
4524 unsigned int len = 0;
4525 int ret = -1;
4526
4527 ret = bfd_mach_o_core_fetch_environment (abfd, &buf, &len);
4528 if (ret < 0)
4529 return NULL;
4530
4531 return (char *) buf;
4532 }
4533
4534 int
4535 bfd_mach_o_core_file_failing_signal (bfd *abfd ATTRIBUTE_UNUSED)
4536 {
4537 return 0;
4538 }
4539
4540 static bfd_mach_o_uuid_command *
4541 bfd_mach_o_lookup_uuid_command (bfd *abfd)
4542 {
4543 bfd_mach_o_load_command *uuid_cmd;
4544 int ncmd = bfd_mach_o_lookup_command (abfd, BFD_MACH_O_LC_UUID, &uuid_cmd);
4545 if (ncmd != 1)
4546 return FALSE;
4547 return &uuid_cmd->command.uuid;
4548 }
4549
4550 /* Return true if ABFD is a dSYM file and its UUID matches UUID_CMD. */
4551
4552 static bfd_boolean
4553 bfd_mach_o_dsym_for_uuid_p (bfd *abfd, const bfd_mach_o_uuid_command *uuid_cmd)
4554 {
4555 bfd_mach_o_uuid_command *dsym_uuid_cmd;
4556
4557 BFD_ASSERT (abfd);
4558 BFD_ASSERT (uuid_cmd);
4559
4560 if (!bfd_check_format (abfd, bfd_object))
4561 return FALSE;
4562
4563 if (bfd_get_flavour (abfd) != bfd_target_mach_o_flavour
4564 || bfd_mach_o_get_data (abfd) == NULL
4565 || bfd_mach_o_get_data (abfd)->header.filetype != BFD_MACH_O_MH_DSYM)
4566 return FALSE;
4567
4568 dsym_uuid_cmd = bfd_mach_o_lookup_uuid_command (abfd);
4569 if (dsym_uuid_cmd == NULL)
4570 return FALSE;
4571
4572 if (memcmp (uuid_cmd->uuid, dsym_uuid_cmd->uuid,
4573 sizeof (uuid_cmd->uuid)) != 0)
4574 return FALSE;
4575
4576 return TRUE;
4577 }
4578
4579 /* Find a BFD in DSYM_FILENAME which matches ARCH and UUID_CMD.
4580 The caller is responsible for closing the returned BFD object and
4581 its my_archive if the returned BFD is in a fat dSYM. */
4582
4583 static bfd *
4584 bfd_mach_o_find_dsym (const char *dsym_filename,
4585 const bfd_mach_o_uuid_command *uuid_cmd,
4586 const bfd_arch_info_type *arch)
4587 {
4588 bfd *base_dsym_bfd, *dsym_bfd;
4589
4590 BFD_ASSERT (uuid_cmd);
4591
4592 base_dsym_bfd = bfd_openr (dsym_filename, NULL);
4593 if (base_dsym_bfd == NULL)
4594 return NULL;
4595
4596 dsym_bfd = bfd_mach_o_fat_extract (base_dsym_bfd, bfd_object, arch);
4597 if (bfd_mach_o_dsym_for_uuid_p (dsym_bfd, uuid_cmd))
4598 return dsym_bfd;
4599
4600 bfd_close (dsym_bfd);
4601 if (base_dsym_bfd != dsym_bfd)
4602 bfd_close (base_dsym_bfd);
4603
4604 return NULL;
4605 }
4606
4607 /* Return a BFD created from a dSYM file for ABFD.
4608 The caller is responsible for closing the returned BFD object, its
4609 filename, and its my_archive if the returned BFD is in a fat dSYM. */
4610
4611 static bfd *
4612 bfd_mach_o_follow_dsym (bfd *abfd)
4613 {
4614 char *dsym_filename;
4615 bfd_mach_o_uuid_command *uuid_cmd;
4616 bfd *dsym_bfd, *base_bfd = abfd;
4617 const char *base_basename;
4618
4619 if (abfd == NULL || bfd_get_flavour (abfd) != bfd_target_mach_o_flavour)
4620 return NULL;
4621
4622 if (abfd->my_archive)
4623 base_bfd = abfd->my_archive;
4624 /* BFD may have been opened from a stream. */
4625 if (base_bfd->filename == NULL)
4626 {
4627 bfd_set_error (bfd_error_invalid_operation);
4628 return NULL;
4629 }
4630 base_basename = lbasename (base_bfd->filename);
4631
4632 uuid_cmd = bfd_mach_o_lookup_uuid_command (abfd);
4633 if (uuid_cmd == NULL)
4634 return NULL;
4635
4636 /* TODO: We assume the DWARF file has the same as the binary's.
4637 It seems apple's GDB checks all files in the dSYM bundle directory.
4638 http://opensource.apple.com/source/gdb/gdb-1708/src/gdb/macosx/macosx-tdep.c
4639 */
4640 dsym_filename = (char *)bfd_malloc (strlen (base_bfd->filename)
4641 + strlen (dsym_subdir) + 1
4642 + strlen (base_basename) + 1);
4643 sprintf (dsym_filename, "%s%s/%s",
4644 base_bfd->filename, dsym_subdir, base_basename);
4645
4646 dsym_bfd = bfd_mach_o_find_dsym (dsym_filename, uuid_cmd,
4647 bfd_get_arch_info (abfd));
4648 if (dsym_bfd == NULL)
4649 free (dsym_filename);
4650
4651 return dsym_bfd;
4652 }
4653
4654 bfd_boolean
4655 bfd_mach_o_find_nearest_line (bfd *abfd,
4656 asection *section,
4657 asymbol **symbols,
4658 bfd_vma offset,
4659 const char **filename_ptr,
4660 const char **functionname_ptr,
4661 unsigned int *line_ptr)
4662 {
4663 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
4664 if (mdata == NULL)
4665 return FALSE;
4666 switch (mdata->header.filetype)
4667 {
4668 case BFD_MACH_O_MH_OBJECT:
4669 break;
4670 case BFD_MACH_O_MH_EXECUTE:
4671 case BFD_MACH_O_MH_DYLIB:
4672 case BFD_MACH_O_MH_BUNDLE:
4673 case BFD_MACH_O_MH_KEXT_BUNDLE:
4674 if (mdata->dwarf2_find_line_info == NULL)
4675 {
4676 mdata->dsym_bfd = bfd_mach_o_follow_dsym (abfd);
4677 /* When we couldn't find dSYM for this binary, we look for
4678 the debug information in the binary itself. In this way,
4679 we won't try finding separated dSYM again because
4680 mdata->dwarf2_find_line_info will be filled. */
4681 if (! mdata->dsym_bfd)
4682 break;
4683 if (! _bfd_dwarf2_slurp_debug_info (abfd, mdata->dsym_bfd,
4684 dwarf_debug_sections, symbols,
4685 &mdata->dwarf2_find_line_info))
4686 return FALSE;
4687 }
4688 break;
4689 default:
4690 return FALSE;
4691 }
4692 if (_bfd_dwarf2_find_nearest_line (abfd, dwarf_debug_sections,
4693 section, symbols, offset,
4694 filename_ptr, functionname_ptr,
4695 line_ptr, 0,
4696 &mdata->dwarf2_find_line_info))
4697 return TRUE;
4698 return FALSE;
4699 }
4700
4701 bfd_boolean
4702 bfd_mach_o_close_and_cleanup (bfd *abfd)
4703 {
4704 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
4705 if (bfd_get_format (abfd) == bfd_object && mdata != NULL)
4706 {
4707 _bfd_dwarf2_cleanup_debug_info (abfd, &mdata->dwarf2_find_line_info);
4708 bfd_mach_o_free_cached_info (abfd);
4709 if (mdata->dsym_bfd != NULL)
4710 {
4711 bfd *fat_bfd = mdata->dsym_bfd->my_archive;
4712 char *dsym_filename = (char *)(fat_bfd
4713 ? fat_bfd->filename
4714 : mdata->dsym_bfd->filename);
4715 bfd_close (mdata->dsym_bfd);
4716 mdata->dsym_bfd = NULL;
4717 if (fat_bfd)
4718 bfd_close (fat_bfd);
4719 free (dsym_filename);
4720 }
4721 }
4722
4723 return _bfd_generic_close_and_cleanup (abfd);
4724 }
4725
4726 bfd_boolean bfd_mach_o_free_cached_info (bfd *abfd)
4727 {
4728 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
4729 asection *asect;
4730 free (mdata->dyn_reloc_cache);
4731 mdata->dyn_reloc_cache = NULL;
4732 for (asect = abfd->sections; asect != NULL; asect = asect->next)
4733 {
4734 free (asect->relocation);
4735 asect->relocation = NULL;
4736 }
4737
4738 return TRUE;
4739 }
4740
4741 #define bfd_mach_o_bfd_reloc_type_lookup _bfd_norelocs_bfd_reloc_type_lookup
4742 #define bfd_mach_o_bfd_reloc_name_lookup _bfd_norelocs_bfd_reloc_name_lookup
4743
4744 #define bfd_mach_o_swap_reloc_in NULL
4745 #define bfd_mach_o_swap_reloc_out NULL
4746 #define bfd_mach_o_print_thread NULL
4747 #define bfd_mach_o_tgt_seg_table NULL
4748 #define bfd_mach_o_section_type_valid_for_tgt NULL
4749
4750 #define TARGET_NAME mach_o_be_vec
4751 #define TARGET_STRING "mach-o-be"
4752 #define TARGET_ARCHITECTURE bfd_arch_unknown
4753 #define TARGET_BIG_ENDIAN 1
4754 #define TARGET_ARCHIVE 0
4755 #define TARGET_PRIORITY 1
4756 #include "mach-o-target.c"
4757
4758 #undef TARGET_NAME
4759 #undef TARGET_STRING
4760 #undef TARGET_ARCHITECTURE
4761 #undef TARGET_BIG_ENDIAN
4762 #undef TARGET_ARCHIVE
4763 #undef TARGET_PRIORITY
4764
4765 #define TARGET_NAME mach_o_le_vec
4766 #define TARGET_STRING "mach-o-le"
4767 #define TARGET_ARCHITECTURE bfd_arch_unknown
4768 #define TARGET_BIG_ENDIAN 0
4769 #define TARGET_ARCHIVE 0
4770 #define TARGET_PRIORITY 1
4771
4772 #include "mach-o-target.c"
4773
4774 #undef TARGET_NAME
4775 #undef TARGET_STRING
4776 #undef TARGET_ARCHITECTURE
4777 #undef TARGET_BIG_ENDIAN
4778 #undef TARGET_ARCHIVE
4779 #undef TARGET_PRIORITY
4780
4781 /* Not yet handled: creating an archive. */
4782 #define bfd_mach_o_mkarchive _bfd_noarchive_mkarchive
4783
4784 /* Not used. */
4785 #define bfd_mach_o_read_ar_hdr _bfd_noarchive_read_ar_hdr
4786 #define bfd_mach_o_write_ar_hdr _bfd_noarchive_write_ar_hdr
4787 #define bfd_mach_o_slurp_armap _bfd_noarchive_slurp_armap
4788 #define bfd_mach_o_slurp_extended_name_table _bfd_noarchive_slurp_extended_name_table
4789 #define bfd_mach_o_construct_extended_name_table _bfd_noarchive_construct_extended_name_table
4790 #define bfd_mach_o_truncate_arname _bfd_noarchive_truncate_arname
4791 #define bfd_mach_o_write_armap _bfd_noarchive_write_armap
4792 #define bfd_mach_o_get_elt_at_index _bfd_noarchive_get_elt_at_index
4793 #define bfd_mach_o_generic_stat_arch_elt bfd_mach_o_fat_stat_arch_elt
4794 #define bfd_mach_o_update_armap_timestamp _bfd_noarchive_update_armap_timestamp
4795
4796 #define TARGET_NAME mach_o_fat_vec
4797 #define TARGET_STRING "mach-o-fat"
4798 #define TARGET_ARCHITECTURE bfd_arch_unknown
4799 #define TARGET_BIG_ENDIAN 1
4800 #define TARGET_ARCHIVE 1
4801 #define TARGET_PRIORITY 0
4802
4803 #include "mach-o-target.c"
4804
4805 #undef TARGET_NAME
4806 #undef TARGET_STRING
4807 #undef TARGET_ARCHITECTURE
4808 #undef TARGET_BIG_ENDIAN
4809 #undef TARGET_ARCHIVE
4810 #undef TARGET_PRIORITY
GDB Binutils - Deliverables
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