1 /* Mach-O support for BFD.
2 Copyright 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008,
4 Free Software Foundation, Inc.
6 This file is part of BFD, the Binary File Descriptor library.
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.
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.
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. */
27 #include "libiberty.h"
28 #include "aout/stab_gnu.h"
29 #include "mach-o/reloc.h"
30 #include "mach-o/external.h"
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
39 #define FILE_ALIGN(off, algn) \
40 (((off) + ((file_ptr) 1 << (algn)) - 1) & ((file_ptr) -1 << (algn)))
43 bfd_mach_o_version (bfd *abfd)
45 bfd_mach_o_data_struct *mdata = NULL;
47 BFD_ASSERT (bfd_mach_o_valid (abfd));
48 mdata = bfd_mach_o_get_data (abfd);
50 return mdata->header.version;
54 bfd_mach_o_valid (bfd *abfd)
56 if (abfd == NULL || abfd->xvec == NULL)
59 if (abfd->xvec->flavour != bfd_target_mach_o_flavour)
62 if (bfd_mach_o_get_data (abfd) == NULL)
67 static INLINE bfd_boolean
68 mach_o_wide_p (bfd_mach_o_header *header)
70 switch (header->version)
82 static INLINE bfd_boolean
83 bfd_mach_o_wide_p (bfd *abfd)
85 return mach_o_wide_p (&bfd_mach_o_get_data (abfd)->header);
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
93 static const mach_o_section_name_xlat text_section_names_xlat[] =
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}
131 /* __DATA Segment. */
132 static const mach_o_section_name_xlat data_section_names_xlat[] =
135 SEC_DATA | SEC_LOAD, BFD_MACH_O_S_REGULAR,
136 BFD_MACH_O_S_ATTR_NONE, 0},
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},
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}
161 /* __DWARF Segment. */
162 static const mach_o_section_name_xlat dwarf_section_names_xlat[] =
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}
203 /* __OBJC Segment. */
204 static const mach_o_section_name_xlat objc_section_names_xlat[] =
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},
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}
273 static const mach_o_segment_name_xlat segsec_names_xlat[] =
275 { "__TEXT", text_section_names_xlat },
276 { "__DATA", data_section_names_xlat },
277 { "__DWARF", dwarf_section_names_xlat },
278 { "__OBJC", objc_section_names_xlat },
282 static const char dsym_subdir[] = ".dSYM/Contents/Resources/DWARF";
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. */
288 /* Fetch the translation from a Mach-O section designation (segment, section)
289 as a bfd short name, if one exists. Otherwise return NULL.
291 Allow the segment and section names to be unterminated 16 byte arrays. */
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)
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);
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)
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)
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. */
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)
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);
334 if (bfd_name[0] != '.')
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)
343 *segname = seg->segname;
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)
352 *segname = seg->segname;
359 /* Convert Mach-O section name to BFD.
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.
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). */
371 bfd_mach_o_convert_section_name_to_bfd (bfd *abfd, const char *segname,
372 const char *secname, const char **name,
375 const mach_o_section_name_xlat *xlat;
378 const char *pfx = "";
381 *flags = SEC_NO_FLAGS;
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);
388 len = strlen (xlat->bfd_name);
389 res = bfd_alloc (abfd, len+1);
392 memcpy (res, xlat->bfd_name, len+1);
394 *flags = xlat->bfd_flags;
398 /* ... else we make up a bfd name from the segment concatenated with the
401 len = 16 + 1 + 16 + 1;
403 /* Put "LC_SEGMENT." prefix if the segment name is weird (ie doesn't start
404 with an underscore. */
405 if (segname[0] != '_')
407 static const char seg_pfx[] = "LC_SEGMENT.";
410 len += sizeof (seg_pfx) - 1;
413 res = bfd_alloc (abfd, len);
416 snprintf (res, len, "%s%.16s.%.16s", pfx, segname, secname);
420 /* Convert a bfd section name to a Mach-O segment + section name.
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.
426 Otherwise, expand the bfd_name (assumed to be in the form
427 "[LC_SEGMENT.]<segmentname>.<sectionname>") and return NULL. */
429 static const mach_o_section_name_xlat *
430 bfd_mach_o_convert_section_name_to_mach_o (bfd *abfd ATTRIBUTE_UNUSED,
432 bfd_mach_o_section *section)
434 const mach_o_section_name_xlat *xlat;
435 const char *name = bfd_get_section_name (abfd, sect);
442 memset (section->segname, 0, BFD_MACH_O_SEGNAME_SIZE + 1);
443 memset (section->sectname, 0, BFD_MACH_O_SECTNAME_SIZE + 1);
445 /* See if is a canonical name ... */
446 xlat = bfd_mach_o_section_data_for_bfd_name (abfd, name, &segname);
449 strcpy (section->segname, segname);
450 strcpy (section->sectname, xlat->mach_o_name);
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)
460 dot = strchr (name, '.');
463 /* Try to split name into segment and section names. */
464 if (dot && dot != name)
467 seclen = len - (dot + 1 - name);
469 if (seglen < 16 && seclen < 16)
471 memcpy (section->segname, name, seglen);
472 section->segname[seglen] = 0;
473 memcpy (section->sectname, dot + 1, seclen);
474 section->sectname[seclen] = 0;
479 /* The segment and section names are both missing - don't make them
481 if (dot && dot == name)
484 /* Just duplicate the name into both segment and section. */
487 memcpy (section->segname, name, len);
488 section->segname[len] = 0;
489 memcpy (section->sectname, name, len);
490 section->sectname[len] = 0;
494 /* Return the size of an entry for section SEC.
495 Must be called only for symbol pointer section and symbol stubs
499 bfd_mach_o_section_get_entry_size (bfd *abfd, bfd_mach_o_section *sec)
501 switch (sec->flags & BFD_MACH_O_SECTION_TYPE_MASK)
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;
514 /* Return the number of indirect symbols for a section.
515 Must be called only for symbol pointer section and symbol stubs
519 bfd_mach_o_section_get_nbr_indirect (bfd *abfd, bfd_mach_o_section *sec)
523 elsz = bfd_mach_o_section_get_entry_size (abfd, sec);
527 return sec->size / elsz;
531 /* Copy any private info we understand from the input symbol
532 to the output symbol. */
535 bfd_mach_o_bfd_copy_private_symbol_data (bfd *ibfd ATTRIBUTE_UNUSED,
537 bfd *obfd ATTRIBUTE_UNUSED,
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;
550 /* Copy any private info we understand from the input section
551 to the output section. */
554 bfd_mach_o_bfd_copy_private_section_data (bfd *ibfd ATTRIBUTE_UNUSED,
556 bfd *obfd ATTRIBUTE_UNUSED,
559 if (osection->used_by_bfd == NULL)
560 osection->used_by_bfd = isection->used_by_bfd;
562 if (isection->used_by_bfd != NULL)
563 memcpy (osection->used_by_bfd, isection->used_by_bfd,
564 sizeof (bfd_mach_o_section));
566 if (osection->used_by_bfd != NULL)
567 ((bfd_mach_o_section *)osection->used_by_bfd)->bfdsection = osection;
572 /* Copy any private info we understand from the input bfd
573 to the output bfd. */
576 bfd_mach_o_bfd_copy_private_bfd_data (bfd *ibfd, bfd *obfd)
578 if (bfd_get_flavour (ibfd) != bfd_target_mach_o_flavour
579 || bfd_get_flavour (obfd) != bfd_target_mach_o_flavour)
582 BFD_ASSERT (bfd_mach_o_valid (ibfd));
583 BFD_ASSERT (bfd_mach_o_valid (obfd));
585 /* FIXME: copy commands. */
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. */
595 bfd_mach_o_bfd_set_private_flags (bfd *abfd, flagword flags)
597 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
602 mdata->header.flags = flags;
606 /* Count the total number of symbols. */
609 bfd_mach_o_count_symbols (bfd *abfd)
611 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
613 if (mdata->symtab == NULL)
615 return mdata->symtab->nsyms;
619 bfd_mach_o_get_symtab_upper_bound (bfd *abfd)
621 long nsyms = bfd_mach_o_count_symbols (abfd);
623 return ((nsyms + 1) * sizeof (asymbol *));
627 bfd_mach_o_canonicalize_symtab (bfd *abfd, asymbol **alocation)
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;
639 /* Do not try to read symbols if there are none. */
644 if (!bfd_mach_o_read_symtab_symbols (abfd))
646 (*_bfd_error_handler)
647 (_("bfd_mach_o_canonicalize_symtab: unable to load symbols"));
651 BFD_ASSERT (sym->symbols != NULL);
653 for (j = 0; j < sym->nsyms; j++)
654 alocation[j] = &sym->symbols[j].symbol;
661 /* Create synthetic symbols for indirect symbols. */
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,
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;
675 unsigned long count, i, j, n;
682 /* Stop now if no symbols or no indirect symbols. */
683 if (dysymtab == NULL || symtab == NULL || symtab->symbols == NULL)
686 if (dysymtab->nindirectsyms == 0)
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;
694 for (j = 0; j < count; j++)
696 unsigned int isym = dysymtab->indirect_syms[j];
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 ("$stub");
703 s = *ret = (asymbol *) bfd_malloc (size);
706 names = (char *) (s + count);
711 for (i = 0; i < mdata->nsects; i++)
713 bfd_mach_o_section *sec = mdata->sections[i];
714 unsigned int first, last;
718 switch (sec->flags & BFD_MACH_O_SECTION_TYPE_MASK)
720 case BFD_MACH_O_S_NON_LAZY_SYMBOL_POINTERS:
721 case BFD_MACH_O_S_LAZY_SYMBOL_POINTERS:
722 case BFD_MACH_O_S_SYMBOL_STUBS:
723 /* Only these sections have indirect symbols. */
724 first = sec->reserved1;
725 last = first + bfd_mach_o_section_get_nbr_indirect (abfd, sec);
727 entry_size = bfd_mach_o_section_get_entry_size (abfd, sec);
728 for (j = first; j < last; j++)
730 unsigned int isym = dysymtab->indirect_syms[j];
732 s->flags = BSF_GLOBAL | BSF_SYNTHETIC;
733 s->section = sec->bfdsection;
734 s->value = addr - sec->addr;
737 if (isym < symtab->nsyms
738 && symtab->symbols[isym].symbol.name)
740 const char *sym = symtab->symbols[isym].symbol.name;
745 memcpy (names, sym, len);
747 memcpy (names, "$stub", sizeof ("$stub"));
748 names += sizeof ("$stub");
767 bfd_mach_o_get_symbol_info (bfd *abfd ATTRIBUTE_UNUSED,
771 bfd_symbol_info (symbol, ret);
775 bfd_mach_o_print_symbol (bfd *abfd,
778 bfd_print_symbol_type how)
780 FILE *file = (FILE *) afile;
782 bfd_mach_o_asymbol *asym = (bfd_mach_o_asymbol *)symbol;
786 case bfd_print_symbol_name:
787 fprintf (file, "%s", symbol->name);
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);
794 switch (asym->n_type & BFD_MACH_O_N_TYPE)
796 case BFD_MACH_O_N_UNDF:
797 if (symbol->value == 0)
802 case BFD_MACH_O_N_ABS:
805 case BFD_MACH_O_N_INDR:
808 case BFD_MACH_O_N_PBUD:
811 case BFD_MACH_O_N_SECT:
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);
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)
835 *subtype = bfd_arch_unknown;
839 case BFD_MACH_O_CPU_TYPE_VAX:
840 *type = bfd_arch_vax;
842 case BFD_MACH_O_CPU_TYPE_MC680x0:
843 *type = bfd_arch_m68k;
845 case BFD_MACH_O_CPU_TYPE_I386:
846 *type = bfd_arch_i386;
847 *subtype = bfd_mach_i386_i386;
849 case BFD_MACH_O_CPU_TYPE_X86_64:
850 *type = bfd_arch_i386;
851 *subtype = bfd_mach_x86_64;
853 case BFD_MACH_O_CPU_TYPE_MIPS:
854 *type = bfd_arch_mips;
856 case BFD_MACH_O_CPU_TYPE_MC98000:
857 *type = bfd_arch_m98k;
859 case BFD_MACH_O_CPU_TYPE_HPPA:
860 *type = bfd_arch_hppa;
862 case BFD_MACH_O_CPU_TYPE_ARM:
863 *type = bfd_arch_arm;
866 case BFD_MACH_O_CPU_SUBTYPE_ARM_V4T:
867 *subtype = bfd_mach_arm_4T;
869 case BFD_MACH_O_CPU_SUBTYPE_ARM_V6:
870 *subtype = bfd_mach_arm_4T; /* Best fit ? */
872 case BFD_MACH_O_CPU_SUBTYPE_ARM_V5TEJ:
873 *subtype = bfd_mach_arm_5TE;
875 case BFD_MACH_O_CPU_SUBTYPE_ARM_XSCALE:
876 *subtype = bfd_mach_arm_XScale;
878 case BFD_MACH_O_CPU_SUBTYPE_ARM_V7:
879 *subtype = bfd_mach_arm_5TE; /* Best fit ? */
881 case BFD_MACH_O_CPU_SUBTYPE_ARM_ALL:
886 case BFD_MACH_O_CPU_TYPE_MC88000:
887 *type = bfd_arch_m88k;
889 case BFD_MACH_O_CPU_TYPE_SPARC:
890 *type = bfd_arch_sparc;
891 *subtype = bfd_mach_sparc;
893 case BFD_MACH_O_CPU_TYPE_I860:
894 *type = bfd_arch_i860;
896 case BFD_MACH_O_CPU_TYPE_ALPHA:
897 *type = bfd_arch_alpha;
899 case BFD_MACH_O_CPU_TYPE_POWERPC:
900 *type = bfd_arch_powerpc;
901 *subtype = bfd_mach_ppc;
903 case BFD_MACH_O_CPU_TYPE_POWERPC_64:
904 *type = bfd_arch_powerpc;
905 *subtype = bfd_mach_ppc64;
908 *type = bfd_arch_unknown;
914 bfd_mach_o_write_header (bfd *abfd, bfd_mach_o_header *header)
916 struct mach_o_header_external raw;
919 size = mach_o_wide_p (header) ?
920 BFD_MACH_O_HEADER_64_SIZE : BFD_MACH_O_HEADER_SIZE;
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);
930 if (mach_o_wide_p (header))
931 bfd_h_put_32 (abfd, header->reserved, raw.reserved);
933 if (bfd_seek (abfd, 0, SEEK_SET) != 0
934 || bfd_bwrite (&raw, size, abfd) != size)
941 bfd_mach_o_write_thread (bfd *abfd, bfd_mach_o_load_command *command)
943 bfd_mach_o_thread_command *cmd = &command->command.thread;
945 struct mach_o_thread_command_external raw;
948 BFD_ASSERT ((command->type == BFD_MACH_O_LC_THREAD)
949 || (command->type == BFD_MACH_O_LC_UNIXTHREAD));
952 for (i = 0; i < cmd->nflavours; i++)
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));
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);
961 if (bfd_seek (abfd, command->offset + offset, SEEK_SET) != 0
962 || bfd_bwrite (&raw, sizeof (raw), abfd) != sizeof (raw))
965 offset += cmd->flavours[i].size + sizeof (raw);
972 bfd_mach_o_get_reloc_upper_bound (bfd *abfd ATTRIBUTE_UNUSED,
975 return (asect->reloc_count + 1) * sizeof (arelent *);
979 bfd_mach_o_canonicalize_one_reloc (bfd *abfd,
980 struct mach_o_reloc_info_external *raw,
981 arelent *res, asymbol **syms)
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;
990 addr = bfd_get_32 (abfd, raw->r_address);
991 symnum = bfd_get_32 (abfd, raw->r_symbolnum);
993 if (addr & BFD_MACH_O_SR_SCATTERED)
997 /* Scattered relocation.
998 Extract section and offset from r_value. */
999 res->sym_ptr_ptr = NULL;
1001 for (j = 0; j < mdata->nsects; j++)
1003 bfd_mach_o_section *sect = mdata->sections[j];
1004 if (symnum >= sect->addr && symnum < sect->addr + sect->size)
1006 res->sym_ptr_ptr = sect->bfdsection->symbol_ptr_ptr;
1007 res->addend = symnum - sect->addr;
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;
1019 unsigned int num = BFD_MACH_O_GET_R_SYMBOLNUM (symnum);
1021 res->address = addr;
1022 if (symnum & BFD_MACH_O_R_EXTERN)
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;
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;
1047 if (!(*bed->_bfd_mach_o_swap_reloc_in)(res, &reloc))
1053 bfd_mach_o_canonicalize_relocs (bfd *abfd, unsigned long filepos,
1054 unsigned long count,
1055 arelent *res, asymbol **syms)
1058 struct mach_o_reloc_info_external *native_relocs;
1059 bfd_size_type native_size;
1061 /* Allocate and read relocs. */
1062 native_size = count * BFD_MACH_O_RELENT_SIZE;
1064 (struct mach_o_reloc_info_external *) bfd_malloc (native_size);
1065 if (native_relocs == NULL)
1068 if (bfd_seek (abfd, filepos, SEEK_SET) != 0
1069 || bfd_bread (native_relocs, native_size, abfd) != native_size)
1072 for (i = 0; i < count; i++)
1074 if (bfd_mach_o_canonicalize_one_reloc (abfd, &native_relocs[i],
1078 free (native_relocs);
1081 free (native_relocs);
1086 bfd_mach_o_canonicalize_reloc (bfd *abfd, asection *asect,
1087 arelent **rels, asymbol **syms)
1089 bfd_mach_o_backend_data *bed = bfd_mach_o_get_backend_data (abfd);
1093 if (asect->reloc_count == 0)
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)
1100 if (asect->relocation == NULL)
1102 res = bfd_malloc (asect->reloc_count * sizeof (arelent));
1106 if (bfd_mach_o_canonicalize_relocs (abfd, asect->rel_filepos,
1107 asect->reloc_count, res, syms) < 0)
1112 asect->relocation = res;
1115 res = asect->relocation;
1116 for (i = 0; i < asect->reloc_count; i++)
1124 bfd_mach_o_get_dynamic_reloc_upper_bound (bfd *abfd)
1126 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
1128 if (mdata->dysymtab == NULL)
1130 return (mdata->dysymtab->nextrel + mdata->dysymtab->nlocrel + 1)
1131 * sizeof (arelent *);
1135 bfd_mach_o_canonicalize_dynamic_reloc (bfd *abfd, arelent **rels,
1136 struct bfd_symbol **syms)
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);
1144 if (dysymtab == NULL)
1146 if (dysymtab->nextrel == 0 && dysymtab->nlocrel == 0)
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)
1153 if (mdata->dyn_reloc_cache == NULL)
1155 res = bfd_malloc ((dysymtab->nextrel + dysymtab->nlocrel)
1156 * sizeof (arelent));
1160 if (bfd_mach_o_canonicalize_relocs (abfd, dysymtab->extreloff,
1161 dysymtab->nextrel, res, syms) < 0)
1167 if (bfd_mach_o_canonicalize_relocs (abfd, dysymtab->locreloff,
1169 res + dysymtab->nextrel, syms) < 0)
1175 mdata->dyn_reloc_cache = res;
1178 res = mdata->dyn_reloc_cache;
1179 for (i = 0; i < dysymtab->nextrel + dysymtab->nlocrel; i++)
1186 bfd_mach_o_write_relocs (bfd *abfd, bfd_mach_o_section *section)
1191 bfd_mach_o_backend_data *bed = bfd_mach_o_get_backend_data (abfd);
1193 sec = section->bfdsection;
1194 if (sec->reloc_count == 0)
1197 if (bed->_bfd_mach_o_swap_reloc_out == NULL)
1200 if (bfd_seek (abfd, section->reloff, SEEK_SET) != 0)
1203 /* Convert and write. */
1204 entries = section->bfdsection->orelocation;
1205 for (i = 0; i < section->nreloc; i++)
1207 arelent *rel = entries[i];
1208 struct mach_o_reloc_info_external raw;
1209 bfd_mach_o_reloc_info info, *pinfo = &info;
1211 /* Convert relocation to an intermediate representation. */
1212 if (!(*bed->_bfd_mach_o_swap_reloc_out) (rel, pinfo))
1215 /* Lower the relocation info. */
1216 if (pinfo->r_scattered)
1220 v = BFD_MACH_O_SR_SCATTERED
1221 | (pinfo->r_pcrel ? BFD_MACH_O_SR_PCREL : 0)
1222 | BFD_MACH_O_SET_SR_LENGTH(pinfo->r_length)
1223 | BFD_MACH_O_SET_SR_TYPE(pinfo->r_type)
1224 | BFD_MACH_O_SET_SR_ADDRESS(pinfo->r_address);
1225 /* Note: scattered relocs have field in reverse order... */
1226 bfd_put_32 (abfd, v, raw.r_address);
1227 bfd_put_32 (abfd, pinfo->r_value, raw.r_symbolnum);
1233 bfd_put_32 (abfd, pinfo->r_address, raw.r_address);
1234 v = BFD_MACH_O_SET_R_SYMBOLNUM (pinfo->r_value)
1235 | (pinfo->r_pcrel ? BFD_MACH_O_R_PCREL : 0)
1236 | BFD_MACH_O_SET_R_LENGTH (pinfo->r_length)
1237 | (pinfo->r_extern ? BFD_MACH_O_R_EXTERN : 0)
1238 | BFD_MACH_O_SET_R_TYPE (pinfo->r_type);
1239 bfd_put_32 (abfd, v, raw.r_symbolnum);
1242 if (bfd_bwrite (&raw, BFD_MACH_O_RELENT_SIZE, abfd)
1243 != BFD_MACH_O_RELENT_SIZE)
1250 bfd_mach_o_write_section_32 (bfd *abfd, bfd_mach_o_section *section)
1252 struct mach_o_section_32_external raw;
1254 memcpy (raw.sectname, section->sectname, 16);
1255 memcpy (raw.segname, section->segname, 16);
1256 bfd_h_put_32 (abfd, section->addr, raw.addr);
1257 bfd_h_put_32 (abfd, section->size, raw.size);
1258 bfd_h_put_32 (abfd, section->offset, raw.offset);
1259 bfd_h_put_32 (abfd, section->align, raw.align);
1260 bfd_h_put_32 (abfd, section->reloff, raw.reloff);
1261 bfd_h_put_32 (abfd, section->nreloc, raw.nreloc);
1262 bfd_h_put_32 (abfd, section->flags, raw.flags);
1263 bfd_h_put_32 (abfd, section->reserved1, raw.reserved1);
1264 bfd_h_put_32 (abfd, section->reserved2, raw.reserved2);
1266 if (bfd_bwrite (&raw, BFD_MACH_O_SECTION_SIZE, abfd)
1267 != BFD_MACH_O_SECTION_SIZE)
1274 bfd_mach_o_write_section_64 (bfd *abfd, bfd_mach_o_section *section)
1276 struct mach_o_section_64_external raw;
1278 memcpy (raw.sectname, section->sectname, 16);
1279 memcpy (raw.segname, section->segname, 16);
1280 bfd_h_put_64 (abfd, section->addr, raw.addr);
1281 bfd_h_put_64 (abfd, section->size, raw.size);
1282 bfd_h_put_32 (abfd, section->offset, raw.offset);
1283 bfd_h_put_32 (abfd, section->align, raw.align);
1284 bfd_h_put_32 (abfd, section->reloff, raw.reloff);
1285 bfd_h_put_32 (abfd, section->nreloc, raw.nreloc);
1286 bfd_h_put_32 (abfd, section->flags, raw.flags);
1287 bfd_h_put_32 (abfd, section->reserved1, raw.reserved1);
1288 bfd_h_put_32 (abfd, section->reserved2, raw.reserved2);
1289 bfd_h_put_32 (abfd, section->reserved3, raw.reserved3);
1291 if (bfd_bwrite (&raw, BFD_MACH_O_SECTION_64_SIZE, abfd)
1292 != BFD_MACH_O_SECTION_64_SIZE)
1299 bfd_mach_o_write_segment_32 (bfd *abfd, bfd_mach_o_load_command *command)
1301 struct mach_o_segment_command_32_external raw;
1302 bfd_mach_o_segment_command *seg = &command->command.segment;
1303 bfd_mach_o_section *sec;
1305 BFD_ASSERT (command->type == BFD_MACH_O_LC_SEGMENT);
1307 for (sec = seg->sect_head; sec != NULL; sec = sec->next)
1308 if (!bfd_mach_o_write_relocs (abfd, sec))
1311 memcpy (raw.segname, seg->segname, 16);
1312 bfd_h_put_32 (abfd, seg->vmaddr, raw.vmaddr);
1313 bfd_h_put_32 (abfd, seg->vmsize, raw.vmsize);
1314 bfd_h_put_32 (abfd, seg->fileoff, raw.fileoff);
1315 bfd_h_put_32 (abfd, seg->filesize, raw.filesize);
1316 bfd_h_put_32 (abfd, seg->maxprot, raw.maxprot);
1317 bfd_h_put_32 (abfd, seg->initprot, raw.initprot);
1318 bfd_h_put_32 (abfd, seg->nsects, raw.nsects);
1319 bfd_h_put_32 (abfd, seg->flags, raw.flags);
1321 if (bfd_seek (abfd, command->offset + BFD_MACH_O_LC_SIZE, SEEK_SET) != 0
1322 || bfd_bwrite (&raw, sizeof (raw), abfd) != sizeof (raw))
1325 for (sec = seg->sect_head; sec != NULL; sec = sec->next)
1326 if (bfd_mach_o_write_section_32 (abfd, sec))
1333 bfd_mach_o_write_segment_64 (bfd *abfd, bfd_mach_o_load_command *command)
1335 struct mach_o_segment_command_64_external raw;
1336 bfd_mach_o_segment_command *seg = &command->command.segment;
1337 bfd_mach_o_section *sec;
1339 BFD_ASSERT (command->type == BFD_MACH_O_LC_SEGMENT_64);
1341 for (sec = seg->sect_head; sec != NULL; sec = sec->next)
1342 if (!bfd_mach_o_write_relocs (abfd, sec))
1345 memcpy (raw.segname, seg->segname, 16);
1346 bfd_h_put_64 (abfd, seg->vmaddr, raw.vmaddr);
1347 bfd_h_put_64 (abfd, seg->vmsize, raw.vmsize);
1348 bfd_h_put_64 (abfd, seg->fileoff, raw.fileoff);
1349 bfd_h_put_64 (abfd, seg->filesize, raw.filesize);
1350 bfd_h_put_32 (abfd, seg->maxprot, raw.maxprot);
1351 bfd_h_put_32 (abfd, seg->initprot, raw.initprot);
1352 bfd_h_put_32 (abfd, seg->nsects, raw.nsects);
1353 bfd_h_put_32 (abfd, seg->flags, raw.flags);
1355 if (bfd_seek (abfd, command->offset + BFD_MACH_O_LC_SIZE, SEEK_SET) != 0
1356 || bfd_bwrite (&raw, sizeof (raw), abfd) != sizeof (raw))
1359 for (sec = seg->sect_head; sec != NULL; sec = sec->next)
1360 if (bfd_mach_o_write_section_64 (abfd, sec))
1367 bfd_mach_o_write_symtab (bfd *abfd, bfd_mach_o_load_command *command)
1369 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
1370 bfd_mach_o_symtab_command *sym = &command->command.symtab;
1372 unsigned int wide = bfd_mach_o_wide_p (abfd);
1373 unsigned int symlen = wide ? BFD_MACH_O_NLIST_64_SIZE : BFD_MACH_O_NLIST_SIZE;
1374 struct bfd_strtab_hash *strtab;
1375 asymbol **symbols = bfd_get_outsymbols (abfd);
1377 BFD_ASSERT (command->type == BFD_MACH_O_LC_SYMTAB);
1379 /* Write the symbols first. */
1380 mdata->filelen = FILE_ALIGN(mdata->filelen, wide ? 3 : 2);
1381 sym->symoff = mdata->filelen;
1382 if (bfd_seek (abfd, sym->symoff, SEEK_SET) != 0)
1385 sym->nsyms = bfd_get_symcount (abfd);
1386 mdata->filelen += sym->nsyms * symlen;
1388 strtab = _bfd_stringtab_init ();
1393 /* Although we don't strictly need to do this, for compatibility with
1394 Darwin system tools, actually output an empty string for the index
1396 _bfd_stringtab_add (strtab, "", TRUE, FALSE);
1398 for (i = 0; i < sym->nsyms; i++)
1400 bfd_size_type str_index;
1401 bfd_mach_o_asymbol *s = (bfd_mach_o_asymbol *)symbols[i];
1403 if (s->symbol.name == 0 || s->symbol.name[0] == '\0')
1404 /* An index of 0 always means the empty string. */
1408 str_index = _bfd_stringtab_add (strtab, s->symbol.name, TRUE, FALSE);
1410 if (str_index == (bfd_size_type) -1)
1416 struct mach_o_nlist_64_external raw;
1418 bfd_h_put_32 (abfd, str_index, raw.n_strx);
1419 bfd_h_put_8 (abfd, s->n_type, raw.n_type);
1420 bfd_h_put_8 (abfd, s->n_sect, raw.n_sect);
1421 bfd_h_put_16 (abfd, s->n_desc, raw.n_desc);
1422 bfd_h_put_64 (abfd, s->symbol.section->vma + s->symbol.value,
1425 if (bfd_bwrite (&raw, sizeof (raw), abfd) != sizeof (raw))
1430 struct mach_o_nlist_external raw;
1432 bfd_h_put_32 (abfd, str_index, raw.n_strx);
1433 bfd_h_put_8 (abfd, s->n_type, raw.n_type);
1434 bfd_h_put_8 (abfd, s->n_sect, raw.n_sect);
1435 bfd_h_put_16 (abfd, s->n_desc, raw.n_desc);
1436 bfd_h_put_32 (abfd, s->symbol.section->vma + s->symbol.value,
1439 if (bfd_bwrite (&raw, sizeof (raw), abfd) != sizeof (raw))
1443 sym->strsize = _bfd_stringtab_size (strtab);
1444 sym->stroff = mdata->filelen;
1445 mdata->filelen += sym->strsize;
1447 if (_bfd_stringtab_emit (abfd, strtab) != TRUE)
1449 _bfd_stringtab_free (strtab);
1453 struct mach_o_symtab_command_external raw;
1455 bfd_h_put_32 (abfd, sym->symoff, raw.symoff);
1456 bfd_h_put_32 (abfd, sym->nsyms, raw.nsyms);
1457 bfd_h_put_32 (abfd, sym->stroff, raw.stroff);
1458 bfd_h_put_32 (abfd, sym->strsize, raw.strsize);
1460 if (bfd_seek (abfd, command->offset + BFD_MACH_O_LC_SIZE, SEEK_SET) != 0
1461 || bfd_bwrite (&raw, sizeof (raw), abfd) != sizeof (raw))
1468 _bfd_stringtab_free (strtab);
1472 /* Write a dysymtab command.
1473 TODO: Possibly coalesce writes of smaller objects. */
1476 bfd_mach_o_write_dysymtab (bfd *abfd, bfd_mach_o_load_command *command)
1478 bfd_mach_o_dysymtab_command *cmd = &command->command.dysymtab;
1480 BFD_ASSERT (command->type == BFD_MACH_O_LC_DYSYMTAB);
1482 if (cmd->nmodtab != 0)
1486 if (bfd_seek (abfd, cmd->modtaboff, SEEK_SET) != 0)
1489 for (i = 0; i < cmd->nmodtab; i++)
1491 bfd_mach_o_dylib_module *module = &cmd->dylib_module[i];
1495 iinit = module->iinit & 0xffff;
1496 iinit |= ((module->iterm & 0xffff) << 16);
1498 ninit = module->ninit & 0xffff;
1499 ninit |= ((module->nterm & 0xffff) << 16);
1501 if (bfd_mach_o_wide_p (abfd))
1503 struct mach_o_dylib_module_64_external w;
1505 bfd_h_put_32 (abfd, module->module_name_idx, &w.module_name);
1506 bfd_h_put_32 (abfd, module->iextdefsym, &w.iextdefsym);
1507 bfd_h_put_32 (abfd, module->nextdefsym, &w.nextdefsym);
1508 bfd_h_put_32 (abfd, module->irefsym, &w.irefsym);
1509 bfd_h_put_32 (abfd, module->nrefsym, &w.nrefsym);
1510 bfd_h_put_32 (abfd, module->ilocalsym, &w.ilocalsym);
1511 bfd_h_put_32 (abfd, module->nlocalsym, &w.nlocalsym);
1512 bfd_h_put_32 (abfd, module->iextrel, &w.iextrel);
1513 bfd_h_put_32 (abfd, module->nextrel, &w.nextrel);
1514 bfd_h_put_32 (abfd, iinit, &w.iinit_iterm);
1515 bfd_h_put_32 (abfd, ninit, &w.ninit_nterm);
1516 bfd_h_put_64 (abfd, module->objc_module_info_addr,
1517 &w.objc_module_info_addr);
1518 bfd_h_put_32 (abfd, module->objc_module_info_size,
1519 &w.objc_module_info_size);
1521 if (bfd_bwrite ((void *) &w, sizeof (w), abfd) != sizeof (w))
1526 struct mach_o_dylib_module_external n;
1528 bfd_h_put_32 (abfd, module->module_name_idx, &n.module_name);
1529 bfd_h_put_32 (abfd, module->iextdefsym, &n.iextdefsym);
1530 bfd_h_put_32 (abfd, module->nextdefsym, &n.nextdefsym);
1531 bfd_h_put_32 (abfd, module->irefsym, &n.irefsym);
1532 bfd_h_put_32 (abfd, module->nrefsym, &n.nrefsym);
1533 bfd_h_put_32 (abfd, module->ilocalsym, &n.ilocalsym);
1534 bfd_h_put_32 (abfd, module->nlocalsym, &n.nlocalsym);
1535 bfd_h_put_32 (abfd, module->iextrel, &n.iextrel);
1536 bfd_h_put_32 (abfd, module->nextrel, &n.nextrel);
1537 bfd_h_put_32 (abfd, iinit, &n.iinit_iterm);
1538 bfd_h_put_32 (abfd, ninit, &n.ninit_nterm);
1539 bfd_h_put_32 (abfd, module->objc_module_info_addr,
1540 &n.objc_module_info_addr);
1541 bfd_h_put_32 (abfd, module->objc_module_info_size,
1542 &n.objc_module_info_size);
1544 if (bfd_bwrite ((void *) &n, sizeof (n), abfd) != sizeof (n))
1554 if (bfd_seek (abfd, cmd->tocoff, SEEK_SET) != 0)
1557 for (i = 0; i < cmd->ntoc; i++)
1559 struct mach_o_dylib_table_of_contents_external raw;
1560 bfd_mach_o_dylib_table_of_content *toc = &cmd->dylib_toc[i];
1562 bfd_h_put_32 (abfd, toc->symbol_index, &raw.symbol_index);
1563 bfd_h_put_32 (abfd, toc->module_index, &raw.module_index);
1565 if (bfd_bwrite (&raw, sizeof (raw), abfd) != sizeof (raw))
1570 if (cmd->nindirectsyms > 0)
1574 if (bfd_seek (abfd, cmd->indirectsymoff, SEEK_SET) != 0)
1577 for (i = 0; i < cmd->nindirectsyms; ++i)
1579 unsigned char raw[4];
1581 bfd_h_put_32 (abfd, cmd->indirect_syms[i], &raw);
1582 if (bfd_bwrite (raw, sizeof (raw), abfd) != sizeof (raw))
1587 if (cmd->nextrefsyms != 0)
1591 if (bfd_seek (abfd, cmd->extrefsymoff, SEEK_SET) != 0)
1594 for (i = 0; i < cmd->nextrefsyms; i++)
1597 unsigned char raw[4];
1598 bfd_mach_o_dylib_reference *ref = &cmd->ext_refs[i];
1600 /* Fields isym and flags are written as bit-fields, thus we need
1601 a specific processing for endianness. */
1603 if (bfd_big_endian (abfd))
1605 v = ((ref->isym & 0xffffff) << 8);
1606 v |= ref->flags & 0xff;
1610 v = ref->isym & 0xffffff;
1611 v |= ((ref->flags & 0xff) << 24);
1614 bfd_h_put_32 (abfd, v, raw);
1615 if (bfd_bwrite (raw, sizeof (raw), abfd) != sizeof (raw))
1621 if (bfd_seek (abfd, command->offset + BFD_MACH_O_LC_SIZE, SEEK_SET) != 0)
1625 struct mach_o_dysymtab_command_external raw;
1627 bfd_h_put_32 (abfd, cmd->ilocalsym, &raw.ilocalsym);
1628 bfd_h_put_32 (abfd, cmd->nlocalsym, &raw.nlocalsym);
1629 bfd_h_put_32 (abfd, cmd->iextdefsym, &raw.iextdefsym);
1630 bfd_h_put_32 (abfd, cmd->nextdefsym, &raw.nextdefsym);
1631 bfd_h_put_32 (abfd, cmd->iundefsym, &raw.iundefsym);
1632 bfd_h_put_32 (abfd, cmd->nundefsym, &raw.nundefsym);
1633 bfd_h_put_32 (abfd, cmd->tocoff, &raw.tocoff);
1634 bfd_h_put_32 (abfd, cmd->ntoc, &raw.ntoc);
1635 bfd_h_put_32 (abfd, cmd->modtaboff, &raw.modtaboff);
1636 bfd_h_put_32 (abfd, cmd->nmodtab, &raw.nmodtab);
1637 bfd_h_put_32 (abfd, cmd->extrefsymoff, &raw.extrefsymoff);
1638 bfd_h_put_32 (abfd, cmd->nextrefsyms, &raw.nextrefsyms);
1639 bfd_h_put_32 (abfd, cmd->indirectsymoff, &raw.indirectsymoff);
1640 bfd_h_put_32 (abfd, cmd->nindirectsyms, &raw.nindirectsyms);
1641 bfd_h_put_32 (abfd, cmd->extreloff, &raw.extreloff);
1642 bfd_h_put_32 (abfd, cmd->nextrel, &raw.nextrel);
1643 bfd_h_put_32 (abfd, cmd->locreloff, &raw.locreloff);
1644 bfd_h_put_32 (abfd, cmd->nlocrel, &raw.nlocrel);
1646 if (bfd_bwrite (&raw, sizeof (raw), abfd) != sizeof (raw))
1654 bfd_mach_o_primary_symbol_sort_key (bfd_mach_o_asymbol *s)
1656 unsigned mtyp = s->n_type & BFD_MACH_O_N_TYPE;
1658 /* Just leave debug symbols where they are (pretend they are local, and
1659 then they will just be sorted on position). */
1660 if (s->n_type & BFD_MACH_O_N_STAB)
1663 /* Local (we should never see an undefined local AFAICT). */
1664 if (! (s->n_type & (BFD_MACH_O_N_EXT | BFD_MACH_O_N_PEXT)))
1667 /* Common symbols look like undefined externs. */
1668 if (mtyp == BFD_MACH_O_N_UNDF)
1671 /* A defined non-local, non-debug symbol. */
1676 bfd_mach_o_cf_symbols (const void *a, const void *b)
1678 bfd_mach_o_asymbol *sa = *(bfd_mach_o_asymbol **) a;
1679 bfd_mach_o_asymbol *sb = *(bfd_mach_o_asymbol **) b;
1680 unsigned int soa, sob;
1682 soa = bfd_mach_o_primary_symbol_sort_key (sa);
1683 sob = bfd_mach_o_primary_symbol_sort_key (sb);
1690 /* If it's local or stab, just preserve the input order. */
1693 if (sa->symbol.udata.i < sb->symbol.udata.i)
1695 if (sa->symbol.udata.i > sb->symbol.udata.i)
1698 /* This is probably an error. */
1702 /* The second sort key is name. */
1703 return strcmp (sa->symbol.name, sb->symbol.name);
1706 /* Process the symbols.
1708 This should be OK for single-module files - but it is not likely to work
1709 for multi-module shared libraries.
1711 (a) If the application has not filled in the relevant mach-o fields, make
1714 (b) Order them, like this:
1717 ( ii) external defined
1719 (iii) external undefined/common
1726 bfd_mach_o_mangle_symbols (bfd *abfd)
1729 asymbol **symbols = bfd_get_outsymbols (abfd);
1731 if (symbols == NULL || bfd_get_symcount (abfd) == 0)
1734 for (i = 0; i < bfd_get_symcount (abfd); i++)
1736 bfd_mach_o_asymbol *s = (bfd_mach_o_asymbol *)symbols[i];
1738 /* We use this value, which is out-of-range as a symbol index, to signal
1739 that the mach-o-specific data are not filled in and need to be created
1740 from the bfd values. It is much preferable for the application to do
1741 this, since more meaningful diagnostics can be made that way. */
1743 if (s->symbol.udata.i == SYM_MACHO_FIELDS_UNSET)
1745 /* No symbol information has been set - therefore determine
1746 it from the bfd symbol flags/info. */
1747 if (s->symbol.section == bfd_abs_section_ptr)
1748 s->n_type = BFD_MACH_O_N_ABS;
1749 else if (s->symbol.section == bfd_und_section_ptr)
1751 s->n_type = BFD_MACH_O_N_UNDF;
1752 if (s->symbol.flags & BSF_WEAK)
1753 s->n_desc |= BFD_MACH_O_N_WEAK_REF;
1754 /* mach-o automatically makes undefined symbols extern. */
1755 s->n_type |= BFD_MACH_O_N_EXT;
1756 s->symbol.flags |= BSF_GLOBAL;
1758 else if (s->symbol.section == bfd_com_section_ptr)
1760 s->n_type = BFD_MACH_O_N_UNDF | BFD_MACH_O_N_EXT;
1761 s->symbol.flags |= BSF_GLOBAL;
1764 s->n_type = BFD_MACH_O_N_SECT;
1766 if (s->symbol.flags & BSF_GLOBAL)
1767 s->n_type |= BFD_MACH_O_N_EXT;
1770 /* Put the section index in, where required. */
1771 if ((s->symbol.section != bfd_abs_section_ptr
1772 && s->symbol.section != bfd_und_section_ptr
1773 && s->symbol.section != bfd_com_section_ptr)
1774 || ((s->n_type & BFD_MACH_O_N_STAB) != 0
1775 && s->symbol.name == NULL))
1776 s->n_sect = s->symbol.section->target_index;
1778 /* Number to preserve order for local and debug syms. */
1779 s->symbol.udata.i = i;
1782 /* Sort the symbols. */
1783 qsort ((void *) symbols, (size_t) bfd_get_symcount (abfd),
1784 sizeof (asymbol *), bfd_mach_o_cf_symbols);
1786 for (i = 0; i < bfd_get_symcount (abfd); ++i)
1788 bfd_mach_o_asymbol *s = (bfd_mach_o_asymbol *)symbols[i];
1789 s->symbol.udata.i = i; /* renumber. */
1795 /* We build a flat table of sections, which can be re-ordered if necessary.
1796 Fill in the section number and other mach-o-specific data. */
1799 bfd_mach_o_mangle_sections (bfd *abfd, bfd_mach_o_data_struct *mdata)
1802 unsigned target_index;
1805 nsect = bfd_count_sections (abfd);
1807 /* Don't do it if it's already set - assume the application knows what it's
1809 if (mdata->nsects == nsect
1810 && (mdata->nsects == 0 || mdata->sections != NULL))
1813 mdata->nsects = nsect;
1814 mdata->sections = bfd_alloc (abfd,
1815 mdata->nsects * sizeof (bfd_mach_o_section *));
1816 if (mdata->sections == NULL)
1819 /* We need to check that this can be done... */
1821 (*_bfd_error_handler) (_("mach-o: there are too many sections (%d)"
1822 " maximum is 255,\n"), nsect);
1824 /* Create Mach-O sections.
1825 Section type, attribute and align should have been set when the
1826 section was created - either read in or specified. */
1828 for (sec = abfd->sections; sec; sec = sec->next)
1830 unsigned bfd_align = bfd_get_section_alignment (abfd, sec);
1831 bfd_mach_o_section *msect = bfd_mach_o_get_mach_o_section (sec);
1833 mdata->sections[target_index] = msect;
1835 msect->addr = bfd_get_section_vma (abfd, sec);
1836 msect->size = bfd_get_section_size (sec);
1838 /* Use the largest alignment set, in case it was bumped after the
1839 section was created. */
1840 msect->align = msect->align > bfd_align ? msect->align : bfd_align;
1843 sec->target_index = ++target_index;
1850 bfd_mach_o_write_contents (bfd *abfd)
1853 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
1855 /* Make the commands, if not already present. */
1856 if (mdata->header.ncmds == 0)
1857 if (!bfd_mach_o_build_commands (abfd))
1860 if (!bfd_mach_o_write_header (abfd, &mdata->header))
1863 for (i = 0; i < mdata->header.ncmds; i++)
1865 struct mach_o_load_command_external raw;
1866 bfd_mach_o_load_command *cur = &mdata->commands[i];
1867 unsigned long typeflag;
1869 typeflag = cur->type | (cur->type_required ? BFD_MACH_O_LC_REQ_DYLD : 0);
1871 bfd_h_put_32 (abfd, typeflag, raw.cmd);
1872 bfd_h_put_32 (abfd, cur->len, raw.cmdsize);
1874 if (bfd_seek (abfd, cur->offset, SEEK_SET) != 0
1875 || bfd_bwrite (&raw, BFD_MACH_O_LC_SIZE, abfd) != 8)
1880 case BFD_MACH_O_LC_SEGMENT:
1881 if (bfd_mach_o_write_segment_32 (abfd, cur) != 0)
1884 case BFD_MACH_O_LC_SEGMENT_64:
1885 if (bfd_mach_o_write_segment_64 (abfd, cur) != 0)
1888 case BFD_MACH_O_LC_SYMTAB:
1889 if (!bfd_mach_o_write_symtab (abfd, cur))
1892 case BFD_MACH_O_LC_DYSYMTAB:
1893 if (!bfd_mach_o_write_dysymtab (abfd, cur))
1896 case BFD_MACH_O_LC_SYMSEG:
1898 case BFD_MACH_O_LC_THREAD:
1899 case BFD_MACH_O_LC_UNIXTHREAD:
1900 if (bfd_mach_o_write_thread (abfd, cur) != 0)
1903 case BFD_MACH_O_LC_LOADFVMLIB:
1904 case BFD_MACH_O_LC_IDFVMLIB:
1905 case BFD_MACH_O_LC_IDENT:
1906 case BFD_MACH_O_LC_FVMFILE:
1907 case BFD_MACH_O_LC_PREPAGE:
1908 case BFD_MACH_O_LC_LOAD_DYLIB:
1909 case BFD_MACH_O_LC_LOAD_WEAK_DYLIB:
1910 case BFD_MACH_O_LC_ID_DYLIB:
1911 case BFD_MACH_O_LC_REEXPORT_DYLIB:
1912 case BFD_MACH_O_LC_LOAD_UPWARD_DYLIB:
1913 case BFD_MACH_O_LC_LOAD_DYLINKER:
1914 case BFD_MACH_O_LC_ID_DYLINKER:
1915 case BFD_MACH_O_LC_PREBOUND_DYLIB:
1916 case BFD_MACH_O_LC_ROUTINES:
1917 case BFD_MACH_O_LC_SUB_FRAMEWORK:
1920 (*_bfd_error_handler) (_("unable to write unknown load command 0x%lx"),
1921 (unsigned long) cur->type);
1930 bfd_mach_o_append_section_to_segment (bfd_mach_o_segment_command *seg,
1933 bfd_mach_o_section *s = (bfd_mach_o_section *)sec->used_by_bfd;
1934 if (seg->sect_head == NULL)
1937 seg->sect_tail->next = s;
1941 /* Create section Mach-O flags from BFD flags. */
1944 bfd_mach_o_set_section_flags_from_bfd (bfd *abfd ATTRIBUTE_UNUSED, asection *sec)
1947 bfd_mach_o_section *s = bfd_mach_o_get_mach_o_section (sec);
1949 /* Create default flags. */
1950 bfd_flags = bfd_get_section_flags (abfd, sec);
1951 if ((bfd_flags & SEC_CODE) == SEC_CODE)
1952 s->flags = BFD_MACH_O_S_ATTR_PURE_INSTRUCTIONS
1953 | BFD_MACH_O_S_ATTR_SOME_INSTRUCTIONS
1954 | BFD_MACH_O_S_REGULAR;
1955 else if ((bfd_flags & (SEC_ALLOC | SEC_LOAD)) == SEC_ALLOC)
1956 s->flags = BFD_MACH_O_S_ZEROFILL;
1957 else if (bfd_flags & SEC_DEBUGGING)
1958 s->flags = BFD_MACH_O_S_REGULAR | BFD_MACH_O_S_ATTR_DEBUG;
1960 s->flags = BFD_MACH_O_S_REGULAR;
1963 /* Count the number of sections in the list for the segment named.
1965 The special case of NULL or "" for the segment name is valid for
1966 an MH_OBJECT file and means 'all sections available'.
1968 Requires that the sections table in mdata be filled in.
1970 Returns the number of sections (0 is valid).
1971 Any number > 255 signals an invalid section count, although we will,
1972 perhaps, allow the file to be written (in line with Darwin tools up
1975 A section count of (unsigned long) -1 signals a definite error. */
1977 static unsigned long
1978 bfd_mach_o_count_sections_for_seg (const char *segment,
1979 bfd_mach_o_data_struct *mdata)
1982 if (mdata == NULL || mdata->sections == NULL)
1983 return (unsigned long) -1;
1985 /* The MH_OBJECT case, all sections are considered; Although nsects is
1986 is an unsigned long, the maximum valid section count is 255 and this
1987 will have been checked already by mangle_sections. */
1988 if (segment == NULL || segment[0] == '\0')
1989 return mdata->nsects;
1991 /* Count the number of sections we see in this segment. */
1993 for (i = 0; i < mdata->nsects; ++i)
1995 bfd_mach_o_section *s = mdata->sections[i];
1996 if (strncmp (segment, s->segname, BFD_MACH_O_SEGNAME_SIZE) == 0)
2003 bfd_mach_o_build_seg_command (const char *segment,
2004 bfd_mach_o_data_struct *mdata,
2005 bfd_mach_o_segment_command *seg)
2008 int is_mho = (segment == NULL || segment[0] == '\0');
2010 /* Fill segment command. */
2012 memset (seg->segname, 0, sizeof (seg->segname));
2014 strncpy (seg->segname, segment, sizeof (seg->segname));
2016 /* TODO: fix this up for non-MH_OBJECT cases. */
2020 seg->fileoff = mdata->filelen;
2022 seg->maxprot = BFD_MACH_O_PROT_READ | BFD_MACH_O_PROT_WRITE
2023 | BFD_MACH_O_PROT_EXECUTE;
2024 seg->initprot = seg->maxprot;
2026 seg->sect_head = NULL;
2027 seg->sect_tail = NULL;
2029 /* Append sections to the segment. */
2031 for (i = 0; i < mdata->nsects; ++i)
2033 bfd_mach_o_section *s = mdata->sections[i];
2034 asection *sec = s->bfdsection;
2036 /* If we're not making an MH_OBJECT, check whether this section is from
2037 our segment, and skip if not. Otherwise, just add all sections. */
2039 && strncmp (segment, s->segname, BFD_MACH_O_SEGNAME_SIZE) != 0)
2042 bfd_mach_o_append_section_to_segment (seg, sec);
2047 seg->vmsize = FILE_ALIGN (seg->vmsize, s->align);
2048 seg->vmsize += s->size;
2051 /* Zerofill sections have zero file size & offset,
2052 and are not written. */
2053 if ((s->flags & BFD_MACH_O_SECTION_TYPE_MASK) == BFD_MACH_O_S_ZEROFILL
2054 || (s->flags & BFD_MACH_O_SECTION_TYPE_MASK)
2055 == BFD_MACH_O_S_GB_ZEROFILL)
2060 mdata->filelen = FILE_ALIGN (mdata->filelen, s->align);
2061 s->offset = mdata->filelen;
2064 sec->filepos = s->offset;
2066 mdata->filelen += s->size;
2069 seg->filesize = mdata->filelen - seg->fileoff;
2070 seg->filesize = FILE_ALIGN(seg->filesize, 2);
2072 /* Allocate relocation room. */
2073 mdata->filelen = FILE_ALIGN(mdata->filelen, 2);
2075 for (i = 0; i < mdata->nsects; ++i)
2077 bfd_mach_o_section *ms = mdata->sections[i];
2078 asection *sec = ms->bfdsection;
2080 if ((ms->nreloc = sec->reloc_count) == 0)
2085 sec->rel_filepos = mdata->filelen;
2086 ms->reloff = sec->rel_filepos;
2087 mdata->filelen += sec->reloc_count * BFD_MACH_O_RELENT_SIZE;
2093 /* Count the number of indirect symbols in the image.
2094 Requires that the sections are in their final order. */
2097 bfd_mach_o_count_indirect_symbols (bfd *abfd, bfd_mach_o_data_struct *mdata)
2100 unsigned int nisyms = 0;
2102 for (i = 0; i < mdata->nsects; ++i)
2104 bfd_mach_o_section *sec = mdata->sections[i];
2106 switch (sec->flags & BFD_MACH_O_SECTION_TYPE_MASK)
2108 case BFD_MACH_O_S_NON_LAZY_SYMBOL_POINTERS:
2109 case BFD_MACH_O_S_LAZY_SYMBOL_POINTERS:
2110 case BFD_MACH_O_S_SYMBOL_STUBS:
2111 nisyms += bfd_mach_o_section_get_nbr_indirect (abfd, sec);
2121 bfd_mach_o_build_dysymtab_command (bfd *abfd,
2122 bfd_mach_o_data_struct *mdata,
2123 bfd_mach_o_load_command *cmd)
2125 bfd_mach_o_dysymtab_command *dsym = &cmd->command.dysymtab;
2128 We are not going to try and fill these in yet and, moreover, we are
2129 going to bail if they are already set. */
2130 if (dsym->nmodtab != 0
2132 || dsym->nextrefsyms != 0)
2134 (*_bfd_error_handler) (_("sorry: modtab, toc and extrefsyms are not yet"
2135 " implemented for dysymtab commands."));
2139 dsym->ilocalsym = 0;
2141 if (bfd_get_symcount (abfd) > 0)
2143 asymbol **symbols = bfd_get_outsymbols (abfd);
2146 /* Count the number of each kind of symbol. */
2147 for (i = 0; i < bfd_get_symcount (abfd); ++i)
2149 bfd_mach_o_asymbol *s = (bfd_mach_o_asymbol *)symbols[i];
2150 if (s->n_type & (BFD_MACH_O_N_EXT | BFD_MACH_O_N_PEXT))
2153 dsym->nlocalsym = i;
2154 dsym->iextdefsym = i;
2155 for (; i < bfd_get_symcount (abfd); ++i)
2157 bfd_mach_o_asymbol *s = (bfd_mach_o_asymbol *)symbols[i];
2158 if ((s->n_type & BFD_MACH_O_N_TYPE) == BFD_MACH_O_N_UNDF)
2161 dsym->nextdefsym = i - dsym->nlocalsym;
2162 dsym->iundefsym = dsym->nextdefsym + dsym->iextdefsym;
2163 dsym->nundefsym = bfd_get_symcount (abfd)
2169 dsym->nlocalsym = 0;
2170 dsym->iextdefsym = 0;
2171 dsym->nextdefsym = 0;
2172 dsym->iundefsym = 0;
2173 dsym->nundefsym = 0;
2176 dsym->nindirectsyms = bfd_mach_o_count_indirect_symbols (abfd, mdata);
2177 if (dsym->nindirectsyms > 0)
2182 mdata->filelen = FILE_ALIGN (mdata->filelen, 2);
2183 dsym->indirectsymoff = mdata->filelen;
2184 mdata->filelen += dsym->nindirectsyms * 4;
2186 dsym->indirect_syms = bfd_zalloc (abfd, dsym->nindirectsyms * 4);
2187 if (dsym->indirect_syms == NULL)
2191 for (i = 0; i < mdata->nsects; ++i)
2193 bfd_mach_o_section *sec = mdata->sections[i];
2195 switch (sec->flags & BFD_MACH_O_SECTION_TYPE_MASK)
2197 case BFD_MACH_O_S_NON_LAZY_SYMBOL_POINTERS:
2198 case BFD_MACH_O_S_LAZY_SYMBOL_POINTERS:
2199 case BFD_MACH_O_S_SYMBOL_STUBS:
2202 bfd_mach_o_asymbol **isyms = sec->indirect_syms;
2204 num = bfd_mach_o_section_get_nbr_indirect (abfd, sec);
2205 if (isyms == NULL || num == 0)
2207 /* Record the starting index in the reserved1 field. */
2209 for (j = 0; j < num; j++, n++)
2211 if (isyms[j] == NULL)
2212 dsym->indirect_syms[n] = BFD_MACH_O_INDIRECT_SYM_LOCAL;
2213 else if (isyms[j]->symbol.section == bfd_abs_section_ptr
2214 && ! (isyms[j]->n_type & BFD_MACH_O_N_EXT))
2215 dsym->indirect_syms[n] = BFD_MACH_O_INDIRECT_SYM_LOCAL
2216 | BFD_MACH_O_INDIRECT_SYM_ABS;
2218 dsym->indirect_syms[n] = isyms[j]->symbol.udata.i;
2231 /* Build Mach-O load commands (currently assuming an MH_OBJECT file).
2232 TODO: Other file formats, rebuilding symtab/dysymtab commands for strip
2233 and copy functionality. */
2236 bfd_mach_o_build_commands (bfd *abfd)
2238 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
2239 unsigned wide = mach_o_wide_p (&mdata->header);
2240 int segcmd_idx = -1;
2241 int symtab_idx = -1;
2242 int dysymtab_idx = -1;
2243 unsigned long base_offset = 0;
2245 /* Return now if commands are already present. */
2246 if (mdata->header.ncmds)
2249 /* Fill in the file type, if not already set. */
2251 if (mdata->header.filetype == 0)
2253 if (abfd->flags & EXEC_P)
2254 mdata->header.filetype = BFD_MACH_O_MH_EXECUTE;
2255 else if (abfd->flags & DYNAMIC)
2256 mdata->header.filetype = BFD_MACH_O_MH_DYLIB;
2258 mdata->header.filetype = BFD_MACH_O_MH_OBJECT;
2261 /* If hasn't already been done, flatten sections list, and sort
2262 if/when required. Must be done before the symbol table is adjusted,
2263 since that depends on properly numbered sections. */
2264 if (mdata->nsects == 0 || mdata->sections == NULL)
2265 if (! bfd_mach_o_mangle_sections (abfd, mdata))
2268 /* Order the symbol table, fill-in/check mach-o specific fields and
2269 partition out any indirect symbols. */
2270 if (!bfd_mach_o_mangle_symbols (abfd))
2273 /* Very simple command set (only really applicable to MH_OBJECTs):
2274 All the commands are optional - present only when there is suitable data.
2275 (i.e. it is valid to have an empty file)
2277 a command (segment) to contain all the sections,
2278 command for the symbol table,
2279 a command for the dysymtab.
2281 ??? maybe we should assert that this is an MH_OBJECT? */
2283 if (mdata->nsects > 0)
2286 mdata->header.ncmds = 1;
2289 if (bfd_get_symcount (abfd) > 0)
2291 mdata->header.ncmds++;
2292 symtab_idx = segcmd_idx + 1; /* 0 if the seg command is absent. */
2296 This is a rather crude test for whether we should build a dysymtab. */
2297 if (bfd_mach_o_should_emit_dysymtab ()
2298 && bfd_get_symcount (abfd))
2300 mdata->header.ncmds++;
2301 /* If there should be a case where a dysymtab could be emitted without
2302 a symtab (seems improbable), this would need amending. */
2303 dysymtab_idx = symtab_idx + 1;
2307 base_offset = BFD_MACH_O_HEADER_64_SIZE;
2309 base_offset = BFD_MACH_O_HEADER_SIZE;
2311 /* Well, we must have a header, at least. */
2312 mdata->filelen = base_offset;
2314 /* A bit unusual, but no content is valid;
2315 as -n empty.s -o empty.o */
2316 if (mdata->header.ncmds == 0)
2319 mdata->commands = bfd_zalloc (abfd, mdata->header.ncmds
2320 * sizeof (bfd_mach_o_load_command));
2321 if (mdata->commands == NULL)
2324 if (segcmd_idx >= 0)
2326 bfd_mach_o_load_command *cmd = &mdata->commands[segcmd_idx];
2327 bfd_mach_o_segment_command *seg = &cmd->command.segment;
2329 /* Count the segctions in the special blank segment used for MH_OBJECT. */
2330 seg->nsects = bfd_mach_o_count_sections_for_seg (NULL, mdata);
2331 if (seg->nsects == (unsigned long) -1)
2334 /* Init segment command. */
2335 cmd->offset = base_offset;
2338 cmd->type = BFD_MACH_O_LC_SEGMENT_64;
2339 cmd->len = BFD_MACH_O_LC_SEGMENT_64_SIZE
2340 + BFD_MACH_O_SECTION_64_SIZE * seg->nsects;
2344 cmd->type = BFD_MACH_O_LC_SEGMENT;
2345 cmd->len = BFD_MACH_O_LC_SEGMENT_SIZE
2346 + BFD_MACH_O_SECTION_SIZE * seg->nsects;
2349 cmd->type_required = FALSE;
2350 mdata->header.sizeofcmds = cmd->len;
2351 mdata->filelen += cmd->len;
2354 if (symtab_idx >= 0)
2356 /* Init symtab command. */
2357 bfd_mach_o_load_command *cmd = &mdata->commands[symtab_idx];
2359 cmd->type = BFD_MACH_O_LC_SYMTAB;
2360 cmd->offset = base_offset;
2361 if (segcmd_idx >= 0)
2362 cmd->offset += mdata->commands[segcmd_idx].len;
2364 cmd->len = sizeof (struct mach_o_symtab_command_external)
2365 + BFD_MACH_O_LC_SIZE;
2366 cmd->type_required = FALSE;
2367 mdata->header.sizeofcmds += cmd->len;
2368 mdata->filelen += cmd->len;
2371 /* If required, setup symtab command, see comment above about the quality
2373 if (dysymtab_idx >= 0)
2375 bfd_mach_o_load_command *cmd = &mdata->commands[dysymtab_idx];
2377 cmd->type = BFD_MACH_O_LC_DYSYMTAB;
2378 if (symtab_idx >= 0)
2379 cmd->offset = mdata->commands[symtab_idx].offset
2380 + mdata->commands[symtab_idx].len;
2381 else if (segcmd_idx >= 0)
2382 cmd->offset = mdata->commands[segcmd_idx].offset
2383 + mdata->commands[segcmd_idx].len;
2385 cmd->offset = base_offset;
2387 cmd->type_required = FALSE;
2388 cmd->len = sizeof (struct mach_o_dysymtab_command_external)
2389 + BFD_MACH_O_LC_SIZE;
2391 mdata->header.sizeofcmds += cmd->len;
2392 mdata->filelen += cmd->len;
2395 /* So, now we have sized the commands and the filelen set to that.
2396 Now we can build the segment command and set the section file offsets. */
2398 && ! bfd_mach_o_build_seg_command
2399 (NULL, mdata, &mdata->commands[segcmd_idx].command.segment))
2402 /* If we're doing a dysymtab, cmd points to its load command. */
2403 if (dysymtab_idx >= 0
2404 && ! bfd_mach_o_build_dysymtab_command (abfd, mdata,
2405 &mdata->commands[dysymtab_idx]))
2408 /* The symtab command is filled in when the symtab is written. */
2412 /* Set the contents of a section. */
2415 bfd_mach_o_set_section_contents (bfd *abfd,
2417 const void * location,
2419 bfd_size_type count)
2423 /* Trying to write the first section contents will trigger the creation of
2424 the load commands if they are not already present. */
2425 if (! abfd->output_has_begun && ! bfd_mach_o_build_commands (abfd))
2431 pos = section->filepos + offset;
2432 if (bfd_seek (abfd, pos, SEEK_SET) != 0
2433 || bfd_bwrite (location, count, abfd) != count)
2440 bfd_mach_o_sizeof_headers (bfd *a ATTRIBUTE_UNUSED,
2441 struct bfd_link_info *info ATTRIBUTE_UNUSED)
2446 /* Make an empty symbol. This is required only because
2447 bfd_make_section_anyway wants to create a symbol for the section. */
2450 bfd_mach_o_make_empty_symbol (bfd *abfd)
2452 asymbol *new_symbol;
2454 new_symbol = bfd_zalloc (abfd, sizeof (bfd_mach_o_asymbol));
2455 if (new_symbol == NULL)
2457 new_symbol->the_bfd = abfd;
2458 new_symbol->udata.i = SYM_MACHO_FIELDS_UNSET;
2463 bfd_mach_o_read_header (bfd *abfd, bfd_mach_o_header *header)
2465 struct mach_o_header_external raw;
2467 bfd_vma (*get32) (const void *) = NULL;
2469 /* Just read the magic number. */
2470 if (bfd_seek (abfd, 0, SEEK_SET) != 0
2471 || bfd_bread (raw.magic, sizeof (raw.magic), abfd) != 4)
2474 if (bfd_getb32 (raw.magic) == BFD_MACH_O_MH_MAGIC)
2476 header->byteorder = BFD_ENDIAN_BIG;
2477 header->magic = BFD_MACH_O_MH_MAGIC;
2478 header->version = 1;
2481 else if (bfd_getl32 (raw.magic) == BFD_MACH_O_MH_MAGIC)
2483 header->byteorder = BFD_ENDIAN_LITTLE;
2484 header->magic = BFD_MACH_O_MH_MAGIC;
2485 header->version = 1;
2488 else if (bfd_getb32 (raw.magic) == BFD_MACH_O_MH_MAGIC_64)
2490 header->byteorder = BFD_ENDIAN_BIG;
2491 header->magic = BFD_MACH_O_MH_MAGIC_64;
2492 header->version = 2;
2495 else if (bfd_getl32 (raw.magic) == BFD_MACH_O_MH_MAGIC_64)
2497 header->byteorder = BFD_ENDIAN_LITTLE;
2498 header->magic = BFD_MACH_O_MH_MAGIC_64;
2499 header->version = 2;
2504 header->byteorder = BFD_ENDIAN_UNKNOWN;
2508 /* Once the size of the header is known, read the full header. */
2509 size = mach_o_wide_p (header) ?
2510 BFD_MACH_O_HEADER_64_SIZE : BFD_MACH_O_HEADER_SIZE;
2512 if (bfd_seek (abfd, 0, SEEK_SET) != 0
2513 || bfd_bread (&raw, size, abfd) != size)
2516 header->cputype = (*get32) (raw.cputype);
2517 header->cpusubtype = (*get32) (raw.cpusubtype);
2518 header->filetype = (*get32) (raw.filetype);
2519 header->ncmds = (*get32) (raw.ncmds);
2520 header->sizeofcmds = (*get32) (raw.sizeofcmds);
2521 header->flags = (*get32) (raw.flags);
2523 if (mach_o_wide_p (header))
2524 header->reserved = (*get32) (raw.reserved);
2530 bfd_mach_o_new_section_hook (bfd *abfd, asection *sec)
2532 bfd_mach_o_section *s;
2533 unsigned bfdalign = bfd_get_section_alignment (abfd, sec);
2535 s = bfd_mach_o_get_mach_o_section (sec);
2539 static const mach_o_section_name_xlat * xlat;
2541 s = (bfd_mach_o_section *) bfd_zalloc (abfd, sizeof (*s));
2544 sec->used_by_bfd = s;
2545 s->bfdsection = sec;
2547 /* Create the Darwin seg/sect name pair from the bfd name.
2548 If this is a canonical name for which a specific paiting exists
2549 there will also be defined flags, type, attribute and alignment
2551 xlat = bfd_mach_o_convert_section_name_to_mach_o (abfd, sec, s);
2554 s->flags = xlat->macho_sectype | xlat->macho_secattr;
2555 s->align = xlat->sectalign > bfdalign ? xlat->sectalign
2557 bfd_set_section_alignment (abfd, sec, s->align);
2558 bfd_flags = bfd_get_section_flags (abfd, sec);
2559 if (bfd_flags == SEC_NO_FLAGS)
2560 bfd_set_section_flags (abfd, sec, xlat->bfd_flags);
2563 /* Create default flags. */
2564 bfd_mach_o_set_section_flags_from_bfd (abfd, sec);
2567 return _bfd_generic_new_section_hook (abfd, sec);
2571 bfd_mach_o_init_section_from_mach_o (bfd *abfd, asection *sec,
2575 bfd_mach_o_section *section;
2577 flags = bfd_get_section_flags (abfd, sec);
2578 section = bfd_mach_o_get_mach_o_section (sec);
2580 /* TODO: see if we should use the xlat system for doing this by
2581 preference and fall back to this for unknown sections. */
2583 if (flags == SEC_NO_FLAGS)
2585 /* Try to guess flags. */
2586 if (section->flags & BFD_MACH_O_S_ATTR_DEBUG)
2587 flags = SEC_DEBUGGING;
2591 if ((section->flags & BFD_MACH_O_SECTION_TYPE_MASK)
2592 != BFD_MACH_O_S_ZEROFILL)
2595 if (prot & BFD_MACH_O_PROT_EXECUTE)
2597 if (prot & BFD_MACH_O_PROT_WRITE)
2599 else if (prot & BFD_MACH_O_PROT_READ)
2600 flags |= SEC_READONLY;
2606 if ((flags & SEC_DEBUGGING) == 0)
2610 if (section->offset != 0)
2611 flags |= SEC_HAS_CONTENTS;
2612 if (section->nreloc != 0)
2615 bfd_set_section_flags (abfd, sec, flags);
2617 sec->vma = section->addr;
2618 sec->lma = section->addr;
2619 sec->size = section->size;
2620 sec->filepos = section->offset;
2621 sec->alignment_power = section->align;
2622 sec->segment_mark = 0;
2623 sec->reloc_count = section->nreloc;
2624 sec->rel_filepos = section->reloff;
2628 bfd_mach_o_make_bfd_section (bfd *abfd,
2629 const unsigned char *segname,
2630 const unsigned char *sectname)
2635 bfd_mach_o_convert_section_name_to_bfd
2636 (abfd, (const char *)segname, (const char *)sectname, &sname, &flags);
2640 return bfd_make_section_anyway_with_flags (abfd, sname, flags);
2644 bfd_mach_o_read_section_32 (bfd *abfd,
2645 unsigned int offset,
2648 struct mach_o_section_32_external raw;
2650 bfd_mach_o_section *section;
2652 if (bfd_seek (abfd, offset, SEEK_SET) != 0
2653 || (bfd_bread (&raw, BFD_MACH_O_SECTION_SIZE, abfd)
2654 != BFD_MACH_O_SECTION_SIZE))
2657 sec = bfd_mach_o_make_bfd_section (abfd, raw.segname, raw.sectname);
2661 section = bfd_mach_o_get_mach_o_section (sec);
2662 memcpy (section->segname, raw.segname, sizeof (raw.segname));
2663 section->segname[BFD_MACH_O_SEGNAME_SIZE] = 0;
2664 memcpy (section->sectname, raw.sectname, sizeof (raw.sectname));
2665 section->sectname[BFD_MACH_O_SECTNAME_SIZE] = 0;
2666 section->addr = bfd_h_get_32 (abfd, raw.addr);
2667 section->size = bfd_h_get_32 (abfd, raw.size);
2668 section->offset = bfd_h_get_32 (abfd, raw.offset);
2669 section->align = bfd_h_get_32 (abfd, raw.align);
2670 section->reloff = bfd_h_get_32 (abfd, raw.reloff);
2671 section->nreloc = bfd_h_get_32 (abfd, raw.nreloc);
2672 section->flags = bfd_h_get_32 (abfd, raw.flags);
2673 section->reserved1 = bfd_h_get_32 (abfd, raw.reserved1);
2674 section->reserved2 = bfd_h_get_32 (abfd, raw.reserved2);
2675 section->reserved3 = 0;
2677 bfd_mach_o_init_section_from_mach_o (abfd, sec, prot);
2683 bfd_mach_o_read_section_64 (bfd *abfd,
2684 unsigned int offset,
2687 struct mach_o_section_64_external raw;
2689 bfd_mach_o_section *section;
2691 if (bfd_seek (abfd, offset, SEEK_SET) != 0
2692 || (bfd_bread (&raw, BFD_MACH_O_SECTION_64_SIZE, abfd)
2693 != BFD_MACH_O_SECTION_64_SIZE))
2696 sec = bfd_mach_o_make_bfd_section (abfd, raw.segname, raw.sectname);
2700 section = bfd_mach_o_get_mach_o_section (sec);
2701 memcpy (section->segname, raw.segname, sizeof (raw.segname));
2702 section->segname[BFD_MACH_O_SEGNAME_SIZE] = 0;
2703 memcpy (section->sectname, raw.sectname, sizeof (raw.sectname));
2704 section->sectname[BFD_MACH_O_SECTNAME_SIZE] = 0;
2705 section->addr = bfd_h_get_64 (abfd, raw.addr);
2706 section->size = bfd_h_get_64 (abfd, raw.size);
2707 section->offset = bfd_h_get_32 (abfd, raw.offset);
2708 section->align = bfd_h_get_32 (abfd, raw.align);
2709 section->reloff = bfd_h_get_32 (abfd, raw.reloff);
2710 section->nreloc = bfd_h_get_32 (abfd, raw.nreloc);
2711 section->flags = bfd_h_get_32 (abfd, raw.flags);
2712 section->reserved1 = bfd_h_get_32 (abfd, raw.reserved1);
2713 section->reserved2 = bfd_h_get_32 (abfd, raw.reserved2);
2714 section->reserved3 = bfd_h_get_32 (abfd, raw.reserved3);
2716 bfd_mach_o_init_section_from_mach_o (abfd, sec, prot);
2722 bfd_mach_o_read_section (bfd *abfd,
2723 unsigned int offset,
2728 return bfd_mach_o_read_section_64 (abfd, offset, prot);
2730 return bfd_mach_o_read_section_32 (abfd, offset, prot);
2734 bfd_mach_o_read_symtab_symbol (bfd *abfd,
2735 bfd_mach_o_symtab_command *sym,
2736 bfd_mach_o_asymbol *s,
2739 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
2740 unsigned int wide = mach_o_wide_p (&mdata->header);
2741 unsigned int symwidth =
2742 wide ? BFD_MACH_O_NLIST_64_SIZE : BFD_MACH_O_NLIST_SIZE;
2743 unsigned int symoff = sym->symoff + (i * symwidth);
2744 struct mach_o_nlist_64_external raw;
2745 unsigned char type = -1;
2746 unsigned char section = -1;
2748 symvalue value = -1;
2749 unsigned long stroff = -1;
2750 unsigned int symtype = -1;
2752 BFD_ASSERT (sym->strtab != NULL);
2754 if (bfd_seek (abfd, symoff, SEEK_SET) != 0
2755 || bfd_bread (&raw, symwidth, abfd) != symwidth)
2757 (*_bfd_error_handler)
2758 (_("bfd_mach_o_read_symtab_symbol: unable to read %d bytes at %lu"),
2759 symwidth, (unsigned long) symoff);
2763 stroff = bfd_h_get_32 (abfd, raw.n_strx);
2764 type = bfd_h_get_8 (abfd, raw.n_type);
2765 symtype = type & BFD_MACH_O_N_TYPE;
2766 section = bfd_h_get_8 (abfd, raw.n_sect);
2767 desc = bfd_h_get_16 (abfd, raw.n_desc);
2769 value = bfd_h_get_64 (abfd, raw.n_value);
2771 value = bfd_h_get_32 (abfd, raw.n_value);
2773 if (stroff >= sym->strsize)
2775 (*_bfd_error_handler)
2776 (_("bfd_mach_o_read_symtab_symbol: name out of range (%lu >= %lu)"),
2777 (unsigned long) stroff,
2778 (unsigned long) sym->strsize);
2782 s->symbol.the_bfd = abfd;
2783 s->symbol.name = sym->strtab + stroff;
2784 s->symbol.value = value;
2785 s->symbol.flags = 0x0;
2786 s->symbol.udata.i = i;
2788 s->n_sect = section;
2791 if (type & BFD_MACH_O_N_STAB)
2793 s->symbol.flags |= BSF_DEBUGGING;
2794 s->symbol.section = bfd_und_section_ptr;
2806 if ((section > 0) && (section <= mdata->nsects))
2808 s->symbol.section = mdata->sections[section - 1]->bfdsection;
2810 s->symbol.value - mdata->sections[section - 1]->addr;
2817 if (type & (BFD_MACH_O_N_PEXT | BFD_MACH_O_N_EXT))
2818 s->symbol.flags |= BSF_GLOBAL;
2820 s->symbol.flags |= BSF_LOCAL;
2824 case BFD_MACH_O_N_UNDF:
2825 if (type == (BFD_MACH_O_N_UNDF | BFD_MACH_O_N_EXT)
2826 && s->symbol.value != 0)
2828 /* A common symbol. */
2829 s->symbol.section = bfd_com_section_ptr;
2830 s->symbol.flags = BSF_NO_FLAGS;
2834 s->symbol.section = bfd_und_section_ptr;
2835 if (s->n_desc & BFD_MACH_O_N_WEAK_REF)
2836 s->symbol.flags |= BSF_WEAK;
2839 case BFD_MACH_O_N_PBUD:
2840 s->symbol.section = bfd_und_section_ptr;
2842 case BFD_MACH_O_N_ABS:
2843 s->symbol.section = bfd_abs_section_ptr;
2845 case BFD_MACH_O_N_SECT:
2846 if ((section > 0) && (section <= mdata->nsects))
2848 s->symbol.section = mdata->sections[section - 1]->bfdsection;
2850 s->symbol.value - mdata->sections[section - 1]->addr;
2854 /* Mach-O uses 0 to mean "no section"; not an error. */
2857 (*_bfd_error_handler) (_("bfd_mach_o_read_symtab_symbol: "
2858 "symbol \"%s\" specified invalid section %d (max %lu): setting to undefined"),
2859 s->symbol.name, section, mdata->nsects);
2861 s->symbol.section = bfd_und_section_ptr;
2864 case BFD_MACH_O_N_INDR:
2865 /* FIXME: we don't follow the BFD convention as this indirect symbol
2866 won't be followed by the referenced one. This looks harmless
2867 unless we start using the linker. */
2868 s->symbol.flags |= BSF_INDIRECT;
2869 s->symbol.section = bfd_ind_section_ptr;
2870 s->symbol.value = 0;
2873 (*_bfd_error_handler) (_("bfd_mach_o_read_symtab_symbol: "
2874 "symbol \"%s\" specified invalid type field 0x%x: setting to undefined"),
2875 s->symbol.name, symtype);
2876 s->symbol.section = bfd_und_section_ptr;
2885 bfd_mach_o_read_symtab_strtab (bfd *abfd)
2887 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
2888 bfd_mach_o_symtab_command *sym = mdata->symtab;
2890 /* Fail if there is no symtab. */
2894 /* Success if already loaded. */
2898 if (abfd->flags & BFD_IN_MEMORY)
2900 struct bfd_in_memory *b;
2902 b = (struct bfd_in_memory *) abfd->iostream;
2904 if ((sym->stroff + sym->strsize) > b->size)
2906 bfd_set_error (bfd_error_file_truncated);
2909 sym->strtab = (char *) b->buffer + sym->stroff;
2913 sym->strtab = bfd_alloc (abfd, sym->strsize);
2914 if (sym->strtab == NULL)
2917 if (bfd_seek (abfd, sym->stroff, SEEK_SET) != 0
2918 || bfd_bread (sym->strtab, sym->strsize, abfd) != sym->strsize)
2920 bfd_set_error (bfd_error_file_truncated);
2929 bfd_mach_o_read_symtab_symbols (bfd *abfd)
2931 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
2932 bfd_mach_o_symtab_command *sym = mdata->symtab;
2935 if (sym == NULL || sym->symbols)
2937 /* Return now if there are no symbols or if already loaded. */
2941 sym->symbols = bfd_alloc (abfd, sym->nsyms * sizeof (bfd_mach_o_asymbol));
2943 if (sym->symbols == NULL)
2945 (*_bfd_error_handler) (_("bfd_mach_o_read_symtab_symbols: unable to allocate memory for symbols"));
2949 if (!bfd_mach_o_read_symtab_strtab (abfd))
2952 for (i = 0; i < sym->nsyms; i++)
2954 if (!bfd_mach_o_read_symtab_symbol (abfd, sym, &sym->symbols[i], i))
2962 bfd_mach_o_i386_flavour_string (unsigned int flavour)
2964 switch ((int) flavour)
2966 case BFD_MACH_O_x86_THREAD_STATE32: return "x86_THREAD_STATE32";
2967 case BFD_MACH_O_x86_FLOAT_STATE32: return "x86_FLOAT_STATE32";
2968 case BFD_MACH_O_x86_EXCEPTION_STATE32: return "x86_EXCEPTION_STATE32";
2969 case BFD_MACH_O_x86_THREAD_STATE64: return "x86_THREAD_STATE64";
2970 case BFD_MACH_O_x86_FLOAT_STATE64: return "x86_FLOAT_STATE64";
2971 case BFD_MACH_O_x86_EXCEPTION_STATE64: return "x86_EXCEPTION_STATE64";
2972 case BFD_MACH_O_x86_THREAD_STATE: return "x86_THREAD_STATE";
2973 case BFD_MACH_O_x86_FLOAT_STATE: return "x86_FLOAT_STATE";
2974 case BFD_MACH_O_x86_EXCEPTION_STATE: return "x86_EXCEPTION_STATE";
2975 case BFD_MACH_O_x86_DEBUG_STATE32: return "x86_DEBUG_STATE32";
2976 case BFD_MACH_O_x86_DEBUG_STATE64: return "x86_DEBUG_STATE64";
2977 case BFD_MACH_O_x86_DEBUG_STATE: return "x86_DEBUG_STATE";
2978 case BFD_MACH_O_x86_THREAD_STATE_NONE: return "x86_THREAD_STATE_NONE";
2979 default: return "UNKNOWN";
2984 bfd_mach_o_ppc_flavour_string (unsigned int flavour)
2986 switch ((int) flavour)
2988 case BFD_MACH_O_PPC_THREAD_STATE: return "PPC_THREAD_STATE";
2989 case BFD_MACH_O_PPC_FLOAT_STATE: return "PPC_FLOAT_STATE";
2990 case BFD_MACH_O_PPC_EXCEPTION_STATE: return "PPC_EXCEPTION_STATE";
2991 case BFD_MACH_O_PPC_VECTOR_STATE: return "PPC_VECTOR_STATE";
2992 case BFD_MACH_O_PPC_THREAD_STATE64: return "PPC_THREAD_STATE64";
2993 case BFD_MACH_O_PPC_EXCEPTION_STATE64: return "PPC_EXCEPTION_STATE64";
2994 default: return "UNKNOWN";
2999 bfd_mach_o_read_dylinker (bfd *abfd, bfd_mach_o_load_command *command)
3001 bfd_mach_o_dylinker_command *cmd = &command->command.dylinker;
3002 struct mach_o_str_command_external raw;
3003 unsigned int nameoff;
3005 BFD_ASSERT ((command->type == BFD_MACH_O_LC_ID_DYLINKER)
3006 || (command->type == BFD_MACH_O_LC_LOAD_DYLINKER));
3008 if (bfd_seek (abfd, command->offset + BFD_MACH_O_LC_SIZE, SEEK_SET) != 0
3009 || bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
3012 nameoff = bfd_h_get_32 (abfd, raw.str);
3014 cmd->name_offset = command->offset + nameoff;
3015 cmd->name_len = command->len - nameoff;
3016 cmd->name_str = bfd_alloc (abfd, cmd->name_len);
3017 if (cmd->name_str == NULL)
3019 if (bfd_seek (abfd, cmd->name_offset, SEEK_SET) != 0
3020 || bfd_bread (cmd->name_str, cmd->name_len, abfd) != cmd->name_len)
3026 bfd_mach_o_read_dylib (bfd *abfd, bfd_mach_o_load_command *command)
3028 bfd_mach_o_dylib_command *cmd = &command->command.dylib;
3029 struct mach_o_dylib_command_external raw;
3030 unsigned int nameoff;
3032 switch (command->type)
3034 case BFD_MACH_O_LC_LOAD_DYLIB:
3035 case BFD_MACH_O_LC_LOAD_WEAK_DYLIB:
3036 case BFD_MACH_O_LC_ID_DYLIB:
3037 case BFD_MACH_O_LC_REEXPORT_DYLIB:
3038 case BFD_MACH_O_LC_LOAD_UPWARD_DYLIB:
3045 if (bfd_seek (abfd, command->offset + BFD_MACH_O_LC_SIZE, SEEK_SET) != 0
3046 || bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
3049 nameoff = bfd_h_get_32 (abfd, raw.name);
3050 cmd->timestamp = bfd_h_get_32 (abfd, raw.timestamp);
3051 cmd->current_version = bfd_h_get_32 (abfd, raw.current_version);
3052 cmd->compatibility_version = bfd_h_get_32 (abfd, raw.compatibility_version);
3054 cmd->name_offset = command->offset + nameoff;
3055 cmd->name_len = command->len - nameoff;
3056 cmd->name_str = bfd_alloc (abfd, cmd->name_len);
3057 if (cmd->name_str == NULL)
3059 if (bfd_seek (abfd, cmd->name_offset, SEEK_SET) != 0
3060 || bfd_bread (cmd->name_str, cmd->name_len, abfd) != cmd->name_len)
3066 bfd_mach_o_read_prebound_dylib (bfd *abfd ATTRIBUTE_UNUSED,
3067 bfd_mach_o_load_command *command ATTRIBUTE_UNUSED)
3069 /* bfd_mach_o_prebound_dylib_command *cmd = &command->command.prebound_dylib; */
3071 BFD_ASSERT (command->type == BFD_MACH_O_LC_PREBOUND_DYLIB);
3076 bfd_mach_o_read_fvmlib (bfd *abfd, bfd_mach_o_load_command *command)
3078 bfd_mach_o_fvmlib_command *fvm = &command->command.fvmlib;
3079 struct mach_o_fvmlib_command_external raw;
3080 unsigned int nameoff;
3082 if (bfd_seek (abfd, command->offset + BFD_MACH_O_LC_SIZE, SEEK_SET) != 0
3083 || bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
3086 nameoff = bfd_h_get_32 (abfd, raw.name);
3087 fvm->minor_version = bfd_h_get_32 (abfd, raw.minor_version);
3088 fvm->header_addr = bfd_h_get_32 (abfd, raw.header_addr);
3090 fvm->name_offset = command->offset + nameoff;
3091 fvm->name_len = command->len - nameoff;
3092 fvm->name_str = bfd_alloc (abfd, fvm->name_len);
3093 if (fvm->name_str == NULL)
3095 if (bfd_seek (abfd, fvm->name_offset, SEEK_SET) != 0
3096 || bfd_bread (fvm->name_str, fvm->name_len, abfd) != fvm->name_len)
3102 bfd_mach_o_read_thread (bfd *abfd, bfd_mach_o_load_command *command)
3104 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
3105 bfd_mach_o_thread_command *cmd = &command->command.thread;
3106 unsigned int offset;
3107 unsigned int nflavours;
3110 BFD_ASSERT ((command->type == BFD_MACH_O_LC_THREAD)
3111 || (command->type == BFD_MACH_O_LC_UNIXTHREAD));
3113 /* Count the number of threads. */
3116 while (offset != command->len)
3118 struct mach_o_thread_command_external raw;
3120 if (offset >= command->len)
3123 if (bfd_seek (abfd, command->offset + offset, SEEK_SET) != 0
3124 || bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
3127 offset += sizeof (raw) + bfd_h_get_32 (abfd, raw.count) * 4;
3131 /* Allocate threads. */
3132 cmd->flavours = bfd_alloc
3133 (abfd, nflavours * sizeof (bfd_mach_o_thread_flavour));
3134 if (cmd->flavours == NULL)
3136 cmd->nflavours = nflavours;
3140 while (offset != command->len)
3142 struct mach_o_thread_command_external raw;
3144 if (offset >= command->len)
3147 if (nflavours >= cmd->nflavours)
3150 if (bfd_seek (abfd, command->offset + offset, SEEK_SET) != 0
3151 || bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
3154 cmd->flavours[nflavours].flavour = bfd_h_get_32 (abfd, raw.flavour);
3155 cmd->flavours[nflavours].offset = command->offset + offset + sizeof (raw);
3156 cmd->flavours[nflavours].size = bfd_h_get_32 (abfd, raw.count) * 4;
3157 offset += cmd->flavours[nflavours].size + sizeof (raw);
3161 for (i = 0; i < nflavours; i++)
3164 unsigned int snamelen;
3166 const char *flavourstr;
3167 const char *prefix = "LC_THREAD";
3170 switch (mdata->header.cputype)
3172 case BFD_MACH_O_CPU_TYPE_POWERPC:
3173 case BFD_MACH_O_CPU_TYPE_POWERPC_64:
3174 flavourstr = bfd_mach_o_ppc_flavour_string (cmd->flavours[i].flavour);
3176 case BFD_MACH_O_CPU_TYPE_I386:
3177 case BFD_MACH_O_CPU_TYPE_X86_64:
3178 flavourstr = bfd_mach_o_i386_flavour_string (cmd->flavours[i].flavour);
3181 flavourstr = "UNKNOWN_ARCHITECTURE";
3185 snamelen = strlen (prefix) + 1 + 20 + 1 + strlen (flavourstr) + 1;
3186 sname = bfd_alloc (abfd, snamelen);
3192 sprintf (sname, "%s.%s.%u", prefix, flavourstr, j);
3193 if (bfd_get_section_by_name (abfd, sname) == NULL)
3198 bfdsec = bfd_make_section_with_flags (abfd, sname, SEC_HAS_CONTENTS);
3202 bfdsec->size = cmd->flavours[i].size;
3203 bfdsec->filepos = cmd->flavours[i].offset;
3204 bfdsec->alignment_power = 0x0;
3206 cmd->section = bfdsec;
3213 bfd_mach_o_read_dysymtab (bfd *abfd, bfd_mach_o_load_command *command)
3215 bfd_mach_o_dysymtab_command *cmd = &command->command.dysymtab;
3216 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
3218 BFD_ASSERT (command->type == BFD_MACH_O_LC_DYSYMTAB);
3221 struct mach_o_dysymtab_command_external raw;
3223 if (bfd_seek (abfd, command->offset + BFD_MACH_O_LC_SIZE, SEEK_SET) != 0
3224 || bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
3227 cmd->ilocalsym = bfd_h_get_32 (abfd, raw.ilocalsym);
3228 cmd->nlocalsym = bfd_h_get_32 (abfd, raw.nlocalsym);
3229 cmd->iextdefsym = bfd_h_get_32 (abfd, raw.iextdefsym);
3230 cmd->nextdefsym = bfd_h_get_32 (abfd, raw.nextdefsym);
3231 cmd->iundefsym = bfd_h_get_32 (abfd, raw.iundefsym);
3232 cmd->nundefsym = bfd_h_get_32 (abfd, raw.nundefsym);
3233 cmd->tocoff = bfd_h_get_32 (abfd, raw.tocoff);
3234 cmd->ntoc = bfd_h_get_32 (abfd, raw.ntoc);
3235 cmd->modtaboff = bfd_h_get_32 (abfd, raw.modtaboff);
3236 cmd->nmodtab = bfd_h_get_32 (abfd, raw.nmodtab);
3237 cmd->extrefsymoff = bfd_h_get_32 (abfd, raw.extrefsymoff);
3238 cmd->nextrefsyms = bfd_h_get_32 (abfd, raw.nextrefsyms);
3239 cmd->indirectsymoff = bfd_h_get_32 (abfd, raw.indirectsymoff);
3240 cmd->nindirectsyms = bfd_h_get_32 (abfd, raw.nindirectsyms);
3241 cmd->extreloff = bfd_h_get_32 (abfd, raw.extreloff);
3242 cmd->nextrel = bfd_h_get_32 (abfd, raw.nextrel);
3243 cmd->locreloff = bfd_h_get_32 (abfd, raw.locreloff);
3244 cmd->nlocrel = bfd_h_get_32 (abfd, raw.nlocrel);
3247 if (cmd->nmodtab != 0)
3250 int wide = bfd_mach_o_wide_p (abfd);
3251 unsigned int module_len = wide ? 56 : 52;
3254 bfd_alloc (abfd, cmd->nmodtab * sizeof (bfd_mach_o_dylib_module));
3255 if (cmd->dylib_module == NULL)
3258 if (bfd_seek (abfd, cmd->modtaboff, SEEK_SET) != 0)
3261 for (i = 0; i < cmd->nmodtab; i++)
3263 bfd_mach_o_dylib_module *module = &cmd->dylib_module[i];
3265 unsigned char buf[56];
3267 if (bfd_bread ((void *) buf, module_len, abfd) != module_len)
3270 module->module_name_idx = bfd_h_get_32 (abfd, buf + 0);
3271 module->iextdefsym = bfd_h_get_32 (abfd, buf + 4);
3272 module->nextdefsym = bfd_h_get_32 (abfd, buf + 8);
3273 module->irefsym = bfd_h_get_32 (abfd, buf + 12);
3274 module->nrefsym = bfd_h_get_32 (abfd, buf + 16);
3275 module->ilocalsym = bfd_h_get_32 (abfd, buf + 20);
3276 module->nlocalsym = bfd_h_get_32 (abfd, buf + 24);
3277 module->iextrel = bfd_h_get_32 (abfd, buf + 28);
3278 module->nextrel = bfd_h_get_32 (abfd, buf + 32);
3279 v = bfd_h_get_32 (abfd, buf +36);
3280 module->iinit = v & 0xffff;
3281 module->iterm = (v >> 16) & 0xffff;
3282 v = bfd_h_get_32 (abfd, buf + 40);
3283 module->ninit = v & 0xffff;
3284 module->nterm = (v >> 16) & 0xffff;
3287 module->objc_module_info_size = bfd_h_get_32 (abfd, buf + 44);
3288 module->objc_module_info_addr = bfd_h_get_64 (abfd, buf + 48);
3292 module->objc_module_info_addr = bfd_h_get_32 (abfd, buf + 44);
3293 module->objc_module_info_size = bfd_h_get_32 (abfd, buf + 48);
3302 cmd->dylib_toc = bfd_alloc
3303 (abfd, cmd->ntoc * sizeof (bfd_mach_o_dylib_table_of_content));
3304 if (cmd->dylib_toc == NULL)
3307 if (bfd_seek (abfd, cmd->tocoff, SEEK_SET) != 0)
3310 for (i = 0; i < cmd->ntoc; i++)
3312 struct mach_o_dylib_table_of_contents_external raw;
3313 bfd_mach_o_dylib_table_of_content *toc = &cmd->dylib_toc[i];
3315 if (bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
3318 toc->symbol_index = bfd_h_get_32 (abfd, raw.symbol_index);
3319 toc->module_index = bfd_h_get_32 (abfd, raw.module_index);
3323 if (cmd->nindirectsyms != 0)
3327 cmd->indirect_syms = bfd_alloc
3328 (abfd, cmd->nindirectsyms * sizeof (unsigned int));
3329 if (cmd->indirect_syms == NULL)
3332 if (bfd_seek (abfd, cmd->indirectsymoff, SEEK_SET) != 0)
3335 for (i = 0; i < cmd->nindirectsyms; i++)
3337 unsigned char raw[4];
3338 unsigned int *is = &cmd->indirect_syms[i];
3340 if (bfd_bread (raw, sizeof (raw), abfd) != sizeof (raw))
3343 *is = bfd_h_get_32 (abfd, raw);
3347 if (cmd->nextrefsyms != 0)
3352 cmd->ext_refs = bfd_alloc
3353 (abfd, cmd->nextrefsyms * sizeof (bfd_mach_o_dylib_reference));
3354 if (cmd->ext_refs == NULL)
3357 if (bfd_seek (abfd, cmd->extrefsymoff, SEEK_SET) != 0)
3360 for (i = 0; i < cmd->nextrefsyms; i++)
3362 unsigned char raw[4];
3363 bfd_mach_o_dylib_reference *ref = &cmd->ext_refs[i];
3365 if (bfd_bread (raw, sizeof (raw), abfd) != sizeof (raw))
3368 /* Fields isym and flags are written as bit-fields, thus we need
3369 a specific processing for endianness. */
3370 v = bfd_h_get_32 (abfd, raw);
3371 if (bfd_big_endian (abfd))
3373 ref->isym = (v >> 8) & 0xffffff;
3374 ref->flags = v & 0xff;
3378 ref->isym = v & 0xffffff;
3379 ref->flags = (v >> 24) & 0xff;
3384 if (mdata->dysymtab)
3386 mdata->dysymtab = cmd;
3392 bfd_mach_o_read_symtab (bfd *abfd, bfd_mach_o_load_command *command)
3394 bfd_mach_o_symtab_command *symtab = &command->command.symtab;
3395 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
3396 struct mach_o_symtab_command_external raw;
3398 BFD_ASSERT (command->type == BFD_MACH_O_LC_SYMTAB);
3400 if (bfd_seek (abfd, command->offset + BFD_MACH_O_LC_SIZE, SEEK_SET) != 0
3401 || bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
3404 symtab->symoff = bfd_h_get_32 (abfd, raw.symoff);
3405 symtab->nsyms = bfd_h_get_32 (abfd, raw.nsyms);
3406 symtab->stroff = bfd_h_get_32 (abfd, raw.stroff);
3407 symtab->strsize = bfd_h_get_32 (abfd, raw.strsize);
3408 symtab->symbols = NULL;
3409 symtab->strtab = NULL;
3411 if (symtab->nsyms != 0)
3412 abfd->flags |= HAS_SYMS;
3416 mdata->symtab = symtab;
3421 bfd_mach_o_read_uuid (bfd *abfd, bfd_mach_o_load_command *command)
3423 bfd_mach_o_uuid_command *cmd = &command->command.uuid;
3425 BFD_ASSERT (command->type == BFD_MACH_O_LC_UUID);
3427 if (bfd_seek (abfd, command->offset + BFD_MACH_O_LC_SIZE, SEEK_SET) != 0
3428 || bfd_bread (cmd->uuid, 16, abfd) != 16)
3435 bfd_mach_o_read_linkedit (bfd *abfd, bfd_mach_o_load_command *command)
3437 bfd_mach_o_linkedit_command *cmd = &command->command.linkedit;
3438 struct mach_o_linkedit_data_command_external raw;
3440 if (bfd_seek (abfd, command->offset + BFD_MACH_O_LC_SIZE, SEEK_SET) != 0
3441 || bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
3444 cmd->dataoff = bfd_get_32 (abfd, raw.dataoff);
3445 cmd->datasize = bfd_get_32 (abfd, raw.datasize);
3450 bfd_mach_o_read_str (bfd *abfd, bfd_mach_o_load_command *command)
3452 bfd_mach_o_str_command *cmd = &command->command.str;
3453 struct mach_o_str_command_external raw;
3456 if (bfd_seek (abfd, command->offset + BFD_MACH_O_LC_SIZE, SEEK_SET) != 0
3457 || bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
3460 off = bfd_get_32 (abfd, raw.str);
3461 cmd->stroff = command->offset + off;
3462 cmd->str_len = command->len - off;
3463 cmd->str = bfd_alloc (abfd, cmd->str_len);
3464 if (cmd->str == NULL)
3466 if (bfd_seek (abfd, cmd->stroff, SEEK_SET) != 0
3467 || bfd_bread ((void *) cmd->str, cmd->str_len, abfd) != cmd->str_len)
3473 bfd_mach_o_read_dyld_info (bfd *abfd, bfd_mach_o_load_command *command)
3475 bfd_mach_o_dyld_info_command *cmd = &command->command.dyld_info;
3476 struct mach_o_dyld_info_command_external raw;
3478 if (bfd_seek (abfd, command->offset + BFD_MACH_O_LC_SIZE, SEEK_SET) != 0
3479 || bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
3482 cmd->rebase_off = bfd_get_32 (abfd, raw.rebase_off);
3483 cmd->rebase_size = bfd_get_32 (abfd, raw.rebase_size);
3484 cmd->bind_off = bfd_get_32 (abfd, raw.bind_off);
3485 cmd->bind_size = bfd_get_32 (abfd, raw.bind_size);
3486 cmd->weak_bind_off = bfd_get_32 (abfd, raw.weak_bind_off);
3487 cmd->weak_bind_size = bfd_get_32 (abfd, raw.weak_bind_size);
3488 cmd->lazy_bind_off = bfd_get_32 (abfd, raw.lazy_bind_off);
3489 cmd->lazy_bind_size = bfd_get_32 (abfd, raw.lazy_bind_size);
3490 cmd->export_off = bfd_get_32 (abfd, raw.export_off);
3491 cmd->export_size = bfd_get_32 (abfd, raw.export_size);
3496 bfd_mach_o_read_version_min (bfd *abfd, bfd_mach_o_load_command *command)
3498 bfd_mach_o_version_min_command *cmd = &command->command.version_min;
3499 struct mach_o_version_min_command_external raw;
3502 if (bfd_seek (abfd, command->offset + BFD_MACH_O_LC_SIZE, SEEK_SET) != 0
3503 || bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
3506 ver = bfd_get_32 (abfd, raw.version);
3507 cmd->rel = ver >> 16;
3508 cmd->maj = ver >> 8;
3510 cmd->reserved = bfd_get_32 (abfd, raw.reserved);
3515 bfd_mach_o_read_encryption_info (bfd *abfd, bfd_mach_o_load_command *command)
3517 bfd_mach_o_encryption_info_command *cmd = &command->command.encryption_info;
3518 struct mach_o_encryption_info_command_external raw;
3520 if (bfd_seek (abfd, command->offset + BFD_MACH_O_LC_SIZE, SEEK_SET) != 0
3521 || bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
3524 cmd->cryptoff = bfd_get_32 (abfd, raw.cryptoff);
3525 cmd->cryptsize = bfd_get_32 (abfd, raw.cryptsize);
3526 cmd->cryptid = bfd_get_32 (abfd, raw.cryptid);
3531 bfd_mach_o_read_segment (bfd *abfd,
3532 bfd_mach_o_load_command *command,
3535 bfd_mach_o_segment_command *seg = &command->command.segment;
3540 struct mach_o_segment_command_64_external raw;
3542 BFD_ASSERT (command->type == BFD_MACH_O_LC_SEGMENT_64);
3544 if (bfd_seek (abfd, command->offset + BFD_MACH_O_LC_SIZE, SEEK_SET) != 0
3545 || bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
3548 memcpy (seg->segname, raw.segname, 16);
3549 seg->segname[16] = '\0';
3551 seg->vmaddr = bfd_h_get_64 (abfd, raw.vmaddr);
3552 seg->vmsize = bfd_h_get_64 (abfd, raw.vmsize);
3553 seg->fileoff = bfd_h_get_64 (abfd, raw.fileoff);
3554 seg->filesize = bfd_h_get_64 (abfd, raw.filesize);
3555 seg->maxprot = bfd_h_get_32 (abfd, raw.maxprot);
3556 seg->initprot = bfd_h_get_32 (abfd, raw.initprot);
3557 seg->nsects = bfd_h_get_32 (abfd, raw.nsects);
3558 seg->flags = bfd_h_get_32 (abfd, raw.flags);
3562 struct mach_o_segment_command_32_external raw;
3564 BFD_ASSERT (command->type == BFD_MACH_O_LC_SEGMENT);
3566 if (bfd_seek (abfd, command->offset + BFD_MACH_O_LC_SIZE, SEEK_SET) != 0
3567 || bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
3570 memcpy (seg->segname, raw.segname, 16);
3571 seg->segname[16] = '\0';
3573 seg->vmaddr = bfd_h_get_32 (abfd, raw.vmaddr);
3574 seg->vmsize = bfd_h_get_32 (abfd, raw.vmsize);
3575 seg->fileoff = bfd_h_get_32 (abfd, raw.fileoff);
3576 seg->filesize = bfd_h_get_32 (abfd, raw.filesize);
3577 seg->maxprot = bfd_h_get_32 (abfd, raw.maxprot);
3578 seg->initprot = bfd_h_get_32 (abfd, raw.initprot);
3579 seg->nsects = bfd_h_get_32 (abfd, raw.nsects);
3580 seg->flags = bfd_h_get_32 (abfd, raw.flags);
3582 seg->sect_head = NULL;
3583 seg->sect_tail = NULL;
3585 for (i = 0; i < seg->nsects; i++)
3591 segoff = command->offset + BFD_MACH_O_LC_SEGMENT_64_SIZE
3592 + (i * BFD_MACH_O_SECTION_64_SIZE);
3594 segoff = command->offset + BFD_MACH_O_LC_SEGMENT_SIZE
3595 + (i * BFD_MACH_O_SECTION_SIZE);
3597 sec = bfd_mach_o_read_section (abfd, segoff, seg->initprot, wide);
3601 bfd_mach_o_append_section_to_segment (seg, sec);
3608 bfd_mach_o_read_segment_32 (bfd *abfd, bfd_mach_o_load_command *command)
3610 return bfd_mach_o_read_segment (abfd, command, 0);
3614 bfd_mach_o_read_segment_64 (bfd *abfd, bfd_mach_o_load_command *command)
3616 return bfd_mach_o_read_segment (abfd, command, 1);
3620 bfd_mach_o_read_command (bfd *abfd, bfd_mach_o_load_command *command)
3622 struct mach_o_load_command_external raw;
3625 /* Read command type and length. */
3626 if (bfd_seek (abfd, command->offset, SEEK_SET) != 0
3627 || bfd_bread (&raw, BFD_MACH_O_LC_SIZE, abfd) != BFD_MACH_O_LC_SIZE)
3630 cmd = bfd_h_get_32 (abfd, raw.cmd);
3631 command->type = cmd & ~BFD_MACH_O_LC_REQ_DYLD;
3632 command->type_required = cmd & BFD_MACH_O_LC_REQ_DYLD ? TRUE : FALSE;
3633 command->len = bfd_h_get_32 (abfd, raw.cmdsize);
3635 switch (command->type)
3637 case BFD_MACH_O_LC_SEGMENT:
3638 if (bfd_mach_o_read_segment_32 (abfd, command) != 0)
3641 case BFD_MACH_O_LC_SEGMENT_64:
3642 if (bfd_mach_o_read_segment_64 (abfd, command) != 0)
3645 case BFD_MACH_O_LC_SYMTAB:
3646 if (bfd_mach_o_read_symtab (abfd, command) != 0)
3649 case BFD_MACH_O_LC_SYMSEG:
3651 case BFD_MACH_O_LC_THREAD:
3652 case BFD_MACH_O_LC_UNIXTHREAD:
3653 if (bfd_mach_o_read_thread (abfd, command) != 0)
3656 case BFD_MACH_O_LC_LOAD_DYLINKER:
3657 case BFD_MACH_O_LC_ID_DYLINKER:
3658 if (bfd_mach_o_read_dylinker (abfd, command) != 0)
3661 case BFD_MACH_O_LC_LOAD_DYLIB:
3662 case BFD_MACH_O_LC_ID_DYLIB:
3663 case BFD_MACH_O_LC_LOAD_WEAK_DYLIB:
3664 case BFD_MACH_O_LC_REEXPORT_DYLIB:
3665 case BFD_MACH_O_LC_LOAD_UPWARD_DYLIB:
3666 if (bfd_mach_o_read_dylib (abfd, command) != 0)
3669 case BFD_MACH_O_LC_PREBOUND_DYLIB:
3670 if (bfd_mach_o_read_prebound_dylib (abfd, command) != 0)
3673 case BFD_MACH_O_LC_LOADFVMLIB:
3674 case BFD_MACH_O_LC_IDFVMLIB:
3675 if (bfd_mach_o_read_fvmlib (abfd, command) != 0)
3678 case BFD_MACH_O_LC_IDENT:
3679 case BFD_MACH_O_LC_FVMFILE:
3680 case BFD_MACH_O_LC_PREPAGE:
3681 case BFD_MACH_O_LC_ROUTINES:
3682 case BFD_MACH_O_LC_ROUTINES_64:
3684 case BFD_MACH_O_LC_SUB_FRAMEWORK:
3685 case BFD_MACH_O_LC_SUB_UMBRELLA:
3686 case BFD_MACH_O_LC_SUB_LIBRARY:
3687 case BFD_MACH_O_LC_SUB_CLIENT:
3688 case BFD_MACH_O_LC_RPATH:
3689 if (bfd_mach_o_read_str (abfd, command) != 0)
3692 case BFD_MACH_O_LC_DYSYMTAB:
3693 if (bfd_mach_o_read_dysymtab (abfd, command) != 0)
3696 case BFD_MACH_O_LC_TWOLEVEL_HINTS:
3697 case BFD_MACH_O_LC_PREBIND_CKSUM:
3699 case BFD_MACH_O_LC_UUID:
3700 if (bfd_mach_o_read_uuid (abfd, command) != 0)
3703 case BFD_MACH_O_LC_CODE_SIGNATURE:
3704 case BFD_MACH_O_LC_SEGMENT_SPLIT_INFO:
3705 case BFD_MACH_O_LC_FUNCTION_STARTS:
3706 if (bfd_mach_o_read_linkedit (abfd, command) != 0)
3709 case BFD_MACH_O_LC_ENCRYPTION_INFO:
3710 if (!bfd_mach_o_read_encryption_info (abfd, command))
3713 case BFD_MACH_O_LC_DYLD_INFO:
3714 if (bfd_mach_o_read_dyld_info (abfd, command) != 0)
3717 case BFD_MACH_O_LC_VERSION_MIN_MACOSX:
3718 case BFD_MACH_O_LC_VERSION_MIN_IPHONEOS:
3719 if (!bfd_mach_o_read_version_min (abfd, command))
3723 (*_bfd_error_handler)(_("%B: unknown load command 0x%lx"),
3724 abfd, (unsigned long) command->type);
3732 bfd_mach_o_flatten_sections (bfd *abfd)
3734 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
3738 /* Count total number of sections. */
3741 for (i = 0; i < mdata->header.ncmds; i++)
3743 if (mdata->commands[i].type == BFD_MACH_O_LC_SEGMENT
3744 || mdata->commands[i].type == BFD_MACH_O_LC_SEGMENT_64)
3746 bfd_mach_o_segment_command *seg;
3748 seg = &mdata->commands[i].command.segment;
3749 mdata->nsects += seg->nsects;
3753 /* Allocate sections array. */
3754 mdata->sections = bfd_alloc (abfd,
3755 mdata->nsects * sizeof (bfd_mach_o_section *));
3757 /* Fill the array. */
3760 for (i = 0; i < mdata->header.ncmds; i++)
3762 if (mdata->commands[i].type == BFD_MACH_O_LC_SEGMENT
3763 || mdata->commands[i].type == BFD_MACH_O_LC_SEGMENT_64)
3765 bfd_mach_o_segment_command *seg;
3766 bfd_mach_o_section *sec;
3768 seg = &mdata->commands[i].command.segment;
3769 BFD_ASSERT (csect + seg->nsects <= mdata->nsects);
3771 for (sec = seg->sect_head; sec != NULL; sec = sec->next)
3772 mdata->sections[csect++] = sec;
3778 bfd_mach_o_scan_start_address (bfd *abfd)
3780 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
3781 bfd_mach_o_thread_command *cmd = NULL;
3784 for (i = 0; i < mdata->header.ncmds; i++)
3785 if ((mdata->commands[i].type == BFD_MACH_O_LC_THREAD) ||
3786 (mdata->commands[i].type == BFD_MACH_O_LC_UNIXTHREAD))
3788 cmd = &mdata->commands[i].command.thread;
3795 /* FIXME: create a subtarget hook ? */
3796 for (i = 0; i < cmd->nflavours; i++)
3798 if ((mdata->header.cputype == BFD_MACH_O_CPU_TYPE_I386)
3799 && (cmd->flavours[i].flavour
3800 == (unsigned long) BFD_MACH_O_x86_THREAD_STATE32))
3802 unsigned char buf[4];
3804 if (bfd_seek (abfd, cmd->flavours[i].offset + 40, SEEK_SET) != 0
3805 || bfd_bread (buf, 4, abfd) != 4)
3808 abfd->start_address = bfd_h_get_32 (abfd, buf);
3810 else if ((mdata->header.cputype == BFD_MACH_O_CPU_TYPE_POWERPC)
3811 && (cmd->flavours[i].flavour == BFD_MACH_O_PPC_THREAD_STATE))
3813 unsigned char buf[4];
3815 if (bfd_seek (abfd, cmd->flavours[i].offset + 0, SEEK_SET) != 0
3816 || bfd_bread (buf, 4, abfd) != 4)
3819 abfd->start_address = bfd_h_get_32 (abfd, buf);
3821 else if ((mdata->header.cputype == BFD_MACH_O_CPU_TYPE_POWERPC_64)
3822 && (cmd->flavours[i].flavour == BFD_MACH_O_PPC_THREAD_STATE64))
3824 unsigned char buf[8];
3826 if (bfd_seek (abfd, cmd->flavours[i].offset + 0, SEEK_SET) != 0
3827 || bfd_bread (buf, 8, abfd) != 8)
3830 abfd->start_address = bfd_h_get_64 (abfd, buf);
3832 else if ((mdata->header.cputype == BFD_MACH_O_CPU_TYPE_X86_64)
3833 && (cmd->flavours[i].flavour == BFD_MACH_O_x86_THREAD_STATE64))
3835 unsigned char buf[8];
3837 if (bfd_seek (abfd, cmd->flavours[i].offset + (16 * 8), SEEK_SET) != 0
3838 || bfd_bread (buf, 8, abfd) != 8)
3841 abfd->start_address = bfd_h_get_64 (abfd, buf);
3849 bfd_mach_o_set_arch_mach (bfd *abfd,
3850 enum bfd_architecture arch,
3851 unsigned long machine)
3853 bfd_mach_o_backend_data *bed = bfd_mach_o_get_backend_data (abfd);
3855 /* If this isn't the right architecture for this backend, and this
3856 isn't the generic backend, fail. */
3857 if (arch != bed->arch
3858 && arch != bfd_arch_unknown
3859 && bed->arch != bfd_arch_unknown)
3862 return bfd_default_set_arch_mach (abfd, arch, machine);
3866 bfd_mach_o_scan (bfd *abfd,
3867 bfd_mach_o_header *header,
3868 bfd_mach_o_data_struct *mdata)
3871 enum bfd_architecture cputype;
3872 unsigned long cpusubtype;
3873 unsigned int hdrsize;
3875 hdrsize = mach_o_wide_p (header) ?
3876 BFD_MACH_O_HEADER_64_SIZE : BFD_MACH_O_HEADER_SIZE;
3878 mdata->header = *header;
3880 abfd->flags = abfd->flags & BFD_IN_MEMORY;
3881 switch (header->filetype)
3883 case BFD_MACH_O_MH_OBJECT:
3884 abfd->flags |= HAS_RELOC;
3886 case BFD_MACH_O_MH_EXECUTE:
3887 abfd->flags |= EXEC_P;
3889 case BFD_MACH_O_MH_DYLIB:
3890 case BFD_MACH_O_MH_BUNDLE:
3891 abfd->flags |= DYNAMIC;
3895 abfd->tdata.mach_o_data = mdata;
3897 bfd_mach_o_convert_architecture (header->cputype, header->cpusubtype,
3898 &cputype, &cpusubtype);
3899 if (cputype == bfd_arch_unknown)
3901 (*_bfd_error_handler)
3902 (_("bfd_mach_o_scan: unknown architecture 0x%lx/0x%lx"),
3903 header->cputype, header->cpusubtype);
3907 bfd_set_arch_mach (abfd, cputype, cpusubtype);
3909 if (header->ncmds != 0)
3911 mdata->commands = bfd_alloc
3912 (abfd, header->ncmds * sizeof (bfd_mach_o_load_command));
3913 if (mdata->commands == NULL)
3916 for (i = 0; i < header->ncmds; i++)
3918 bfd_mach_o_load_command *cur = &mdata->commands[i];
3921 cur->offset = hdrsize;
3924 bfd_mach_o_load_command *prev = &mdata->commands[i - 1];
3925 cur->offset = prev->offset + prev->len;
3928 if (bfd_mach_o_read_command (abfd, cur) < 0)
3933 if (bfd_mach_o_scan_start_address (abfd) < 0)
3936 bfd_mach_o_flatten_sections (abfd);
3941 bfd_mach_o_mkobject_init (bfd *abfd)
3943 bfd_mach_o_data_struct *mdata = NULL;
3945 mdata = bfd_alloc (abfd, sizeof (bfd_mach_o_data_struct));
3948 abfd->tdata.mach_o_data = mdata;
3950 mdata->header.magic = 0;
3951 mdata->header.cputype = 0;
3952 mdata->header.cpusubtype = 0;
3953 mdata->header.filetype = 0;
3954 mdata->header.ncmds = 0;
3955 mdata->header.sizeofcmds = 0;
3956 mdata->header.flags = 0;
3957 mdata->header.byteorder = BFD_ENDIAN_UNKNOWN;
3958 mdata->commands = NULL;
3960 mdata->sections = NULL;
3961 mdata->dyn_reloc_cache = NULL;
3967 bfd_mach_o_gen_mkobject (bfd *abfd)
3969 bfd_mach_o_data_struct *mdata;
3971 if (!bfd_mach_o_mkobject_init (abfd))
3974 mdata = bfd_mach_o_get_data (abfd);
3975 mdata->header.magic = BFD_MACH_O_MH_MAGIC;
3976 mdata->header.cputype = 0;
3977 mdata->header.cpusubtype = 0;
3978 mdata->header.byteorder = abfd->xvec->byteorder;
3979 mdata->header.version = 1;
3985 bfd_mach_o_header_p (bfd *abfd,
3986 bfd_mach_o_filetype filetype,
3987 bfd_mach_o_cpu_type cputype)
3989 struct bfd_preserve preserve;
3990 bfd_mach_o_header header;
3992 preserve.marker = NULL;
3993 if (!bfd_mach_o_read_header (abfd, &header))
3996 if (! (header.byteorder == BFD_ENDIAN_BIG
3997 || header.byteorder == BFD_ENDIAN_LITTLE))
3999 (*_bfd_error_handler) (_("unknown header byte-order value 0x%lx"),
4000 (unsigned long) header.byteorder);
4004 if (! ((header.byteorder == BFD_ENDIAN_BIG
4005 && abfd->xvec->byteorder == BFD_ENDIAN_BIG
4006 && abfd->xvec->header_byteorder == BFD_ENDIAN_BIG)
4007 || (header.byteorder == BFD_ENDIAN_LITTLE
4008 && abfd->xvec->byteorder == BFD_ENDIAN_LITTLE
4009 && abfd->xvec->header_byteorder == BFD_ENDIAN_LITTLE)))
4012 /* Check cputype and filetype.
4013 In case of wildcard, do not accept magics that are handled by existing
4017 if (header.cputype != cputype)
4023 if (header.filetype != filetype)
4028 switch (header.filetype)
4030 case BFD_MACH_O_MH_CORE:
4031 /* Handled by core_p */
4038 preserve.marker = bfd_zalloc (abfd, sizeof (bfd_mach_o_data_struct));
4039 if (preserve.marker == NULL
4040 || !bfd_preserve_save (abfd, &preserve))
4043 if (!bfd_mach_o_scan (abfd, &header,
4044 (bfd_mach_o_data_struct *) preserve.marker))
4047 bfd_preserve_finish (abfd, &preserve);
4051 bfd_set_error (bfd_error_wrong_format);
4054 if (preserve.marker != NULL)
4055 bfd_preserve_restore (abfd, &preserve);
4059 static const bfd_target *
4060 bfd_mach_o_gen_object_p (bfd *abfd)
4062 return bfd_mach_o_header_p (abfd, 0, 0);
4065 static const bfd_target *
4066 bfd_mach_o_gen_core_p (bfd *abfd)
4068 return bfd_mach_o_header_p (abfd, BFD_MACH_O_MH_CORE, 0);
4071 typedef struct mach_o_fat_archentry
4073 unsigned long cputype;
4074 unsigned long cpusubtype;
4075 unsigned long offset;
4077 unsigned long align;
4078 } mach_o_fat_archentry;
4080 typedef struct mach_o_fat_data_struct
4082 unsigned long magic;
4083 unsigned long nfat_arch;
4084 mach_o_fat_archentry *archentries;
4085 } mach_o_fat_data_struct;
4088 bfd_mach_o_archive_p (bfd *abfd)
4090 mach_o_fat_data_struct *adata = NULL;
4091 struct mach_o_fat_header_external hdr;
4094 if (bfd_seek (abfd, 0, SEEK_SET) != 0
4095 || bfd_bread (&hdr, sizeof (hdr), abfd) != sizeof (hdr))
4098 adata = bfd_alloc (abfd, sizeof (mach_o_fat_data_struct));
4102 adata->magic = bfd_getb32 (hdr.magic);
4103 adata->nfat_arch = bfd_getb32 (hdr.nfat_arch);
4104 if (adata->magic != 0xcafebabe)
4106 /* Avoid matching Java bytecode files, which have the same magic number.
4107 In the Java bytecode file format this field contains the JVM version,
4108 which starts at 43.0. */
4109 if (adata->nfat_arch > 30)
4112 adata->archentries =
4113 bfd_alloc (abfd, adata->nfat_arch * sizeof (mach_o_fat_archentry));
4114 if (adata->archentries == NULL)
4117 for (i = 0; i < adata->nfat_arch; i++)
4119 struct mach_o_fat_arch_external arch;
4120 if (bfd_bread (&arch, sizeof (arch), abfd) != sizeof (arch))
4122 adata->archentries[i].cputype = bfd_getb32 (arch.cputype);
4123 adata->archentries[i].cpusubtype = bfd_getb32 (arch.cpusubtype);
4124 adata->archentries[i].offset = bfd_getb32 (arch.offset);
4125 adata->archentries[i].size = bfd_getb32 (arch.size);
4126 adata->archentries[i].align = bfd_getb32 (arch.align);
4129 abfd->tdata.mach_o_fat_data = adata;
4134 bfd_release (abfd, adata);
4135 bfd_set_error (bfd_error_wrong_format);
4139 /* Set the filename for a fat binary member ABFD, whose bfd architecture is
4140 ARCH_TYPE/ARCH_SUBTYPE and corresponding entry in header is ENTRY.
4141 Set arelt_data and origin fields too. */
4144 bfd_mach_o_fat_member_init (bfd *abfd,
4145 enum bfd_architecture arch_type,
4146 unsigned long arch_subtype,
4147 mach_o_fat_archentry *entry)
4149 struct areltdata *areltdata;
4150 /* Create the member filename. Use ARCH_NAME. */
4151 const bfd_arch_info_type *ap = bfd_lookup_arch (arch_type, arch_subtype);
4155 /* Use the architecture name if known. */
4156 abfd->filename = ap->printable_name;
4160 /* Forge a uniq id. */
4161 const size_t namelen = 2 + 8 + 1 + 2 + 8 + 1;
4162 char *name = bfd_alloc (abfd, namelen);
4163 snprintf (name, namelen, "0x%lx-0x%lx",
4164 entry->cputype, entry->cpusubtype);
4165 abfd->filename = name;
4168 areltdata = bfd_zalloc (abfd, sizeof (struct areltdata));
4169 areltdata->parsed_size = entry->size;
4170 abfd->arelt_data = areltdata;
4171 abfd->iostream = NULL;
4172 abfd->origin = entry->offset;
4176 bfd_mach_o_openr_next_archived_file (bfd *archive, bfd *prev)
4178 mach_o_fat_data_struct *adata;
4179 mach_o_fat_archentry *entry = NULL;
4182 enum bfd_architecture arch_type;
4183 unsigned long arch_subtype;
4185 adata = (mach_o_fat_data_struct *) archive->tdata.mach_o_fat_data;
4186 BFD_ASSERT (adata != NULL);
4188 /* Find index of previous entry. */
4191 /* Start at first one. */
4196 /* Find index of PREV. */
4197 for (i = 0; i < adata->nfat_arch; i++)
4199 if (adata->archentries[i].offset == prev->origin)
4203 if (i == adata->nfat_arch)
4206 bfd_set_error (bfd_error_bad_value);
4210 /* Get next entry. */
4214 if (i >= adata->nfat_arch)
4216 bfd_set_error (bfd_error_no_more_archived_files);
4220 entry = &adata->archentries[i];
4221 nbfd = _bfd_new_bfd_contained_in (archive);
4225 bfd_mach_o_convert_architecture (entry->cputype, entry->cpusubtype,
4226 &arch_type, &arch_subtype);
4228 bfd_mach_o_fat_member_init (nbfd, arch_type, arch_subtype, entry);
4230 bfd_set_arch_mach (nbfd, arch_type, arch_subtype);
4235 /* Analogous to stat call. */
4238 bfd_mach_o_fat_stat_arch_elt (bfd *abfd, struct stat *buf)
4240 if (abfd->arelt_data == NULL)
4242 bfd_set_error (bfd_error_invalid_operation);
4249 buf->st_mode = 0644;
4250 buf->st_size = arelt_size (abfd);
4255 /* If ABFD format is FORMAT and architecture is ARCH, return it.
4256 If ABFD is a fat image containing a member that corresponds to FORMAT
4257 and ARCH, returns it.
4258 In other case, returns NULL.
4259 This function allows transparent uses of fat images. */
4262 bfd_mach_o_fat_extract (bfd *abfd,
4264 const bfd_arch_info_type *arch)
4267 mach_o_fat_data_struct *adata;
4270 if (bfd_check_format (abfd, format))
4272 if (bfd_get_arch_info (abfd) == arch)
4276 if (!bfd_check_format (abfd, bfd_archive)
4277 || abfd->xvec != &mach_o_fat_vec)
4280 /* This is a Mach-O fat image. */
4281 adata = (mach_o_fat_data_struct *) abfd->tdata.mach_o_fat_data;
4282 BFD_ASSERT (adata != NULL);
4284 for (i = 0; i < adata->nfat_arch; i++)
4286 struct mach_o_fat_archentry *e = &adata->archentries[i];
4287 enum bfd_architecture cpu_type;
4288 unsigned long cpu_subtype;
4290 bfd_mach_o_convert_architecture (e->cputype, e->cpusubtype,
4291 &cpu_type, &cpu_subtype);
4292 if (cpu_type != arch->arch || cpu_subtype != arch->mach)
4295 /* The architecture is found. */
4296 res = _bfd_new_bfd_contained_in (abfd);
4300 bfd_mach_o_fat_member_init (res, cpu_type, cpu_subtype, e);
4302 if (bfd_check_format (res, format))
4304 BFD_ASSERT (bfd_get_arch_info (res) == arch);
4315 bfd_mach_o_lookup_command (bfd *abfd,
4316 bfd_mach_o_load_command_type type,
4317 bfd_mach_o_load_command **mcommand)
4319 struct mach_o_data_struct *md = bfd_mach_o_get_data (abfd);
4320 bfd_mach_o_load_command *ncmd = NULL;
4321 unsigned int i, num;
4323 BFD_ASSERT (md != NULL);
4324 BFD_ASSERT (mcommand != NULL);
4327 for (i = 0; i < md->header.ncmds; i++)
4329 struct bfd_mach_o_load_command *cmd = &md->commands[i];
4331 if (cmd->type != type)
4344 bfd_mach_o_stack_addr (enum bfd_mach_o_cpu_type type)
4348 case BFD_MACH_O_CPU_TYPE_MC680x0:
4350 case BFD_MACH_O_CPU_TYPE_MC88000:
4352 case BFD_MACH_O_CPU_TYPE_POWERPC:
4354 case BFD_MACH_O_CPU_TYPE_I386:
4356 case BFD_MACH_O_CPU_TYPE_SPARC:
4358 case BFD_MACH_O_CPU_TYPE_I860:
4360 case BFD_MACH_O_CPU_TYPE_HPPA:
4361 return 0xc0000000 - 0x04000000;
4367 /* The following two tables should be kept, as far as possible, in order of
4368 most frequently used entries to optimize their use from gas. */
4370 const bfd_mach_o_xlat_name bfd_mach_o_section_type_name[] =
4372 { "regular", BFD_MACH_O_S_REGULAR},
4373 { "coalesced", BFD_MACH_O_S_COALESCED},
4374 { "zerofill", BFD_MACH_O_S_ZEROFILL},
4375 { "cstring_literals", BFD_MACH_O_S_CSTRING_LITERALS},
4376 { "4byte_literals", BFD_MACH_O_S_4BYTE_LITERALS},
4377 { "8byte_literals", BFD_MACH_O_S_8BYTE_LITERALS},
4378 { "16byte_literals", BFD_MACH_O_S_16BYTE_LITERALS},
4379 { "literal_pointers", BFD_MACH_O_S_LITERAL_POINTERS},
4380 { "mod_init_func_pointers", BFD_MACH_O_S_MOD_INIT_FUNC_POINTERS},
4381 { "mod_fini_func_pointers", BFD_MACH_O_S_MOD_FINI_FUNC_POINTERS},
4382 { "gb_zerofill", BFD_MACH_O_S_GB_ZEROFILL},
4383 { "interposing", BFD_MACH_O_S_INTERPOSING},
4384 { "dtrace_dof", BFD_MACH_O_S_DTRACE_DOF},
4385 { "non_lazy_symbol_pointers", BFD_MACH_O_S_NON_LAZY_SYMBOL_POINTERS},
4386 { "lazy_symbol_pointers", BFD_MACH_O_S_LAZY_SYMBOL_POINTERS},
4387 { "symbol_stubs", BFD_MACH_O_S_SYMBOL_STUBS},
4388 { "lazy_dylib_symbol_pointers", BFD_MACH_O_S_LAZY_DYLIB_SYMBOL_POINTERS},
4392 const bfd_mach_o_xlat_name bfd_mach_o_section_attribute_name[] =
4394 { "pure_instructions", BFD_MACH_O_S_ATTR_PURE_INSTRUCTIONS },
4395 { "some_instructions", BFD_MACH_O_S_ATTR_SOME_INSTRUCTIONS },
4396 { "loc_reloc", BFD_MACH_O_S_ATTR_LOC_RELOC },
4397 { "ext_reloc", BFD_MACH_O_S_ATTR_EXT_RELOC },
4398 { "debug", BFD_MACH_O_S_ATTR_DEBUG },
4399 { "live_support", BFD_MACH_O_S_ATTR_LIVE_SUPPORT },
4400 { "no_dead_strip", BFD_MACH_O_S_ATTR_NO_DEAD_STRIP },
4401 { "strip_static_syms", BFD_MACH_O_S_ATTR_STRIP_STATIC_SYMS },
4402 { "no_toc", BFD_MACH_O_S_ATTR_NO_TOC },
4403 { "self_modifying_code", BFD_MACH_O_S_SELF_MODIFYING_CODE },
4404 { "modifying_code", BFD_MACH_O_S_SELF_MODIFYING_CODE },
4408 /* Get the section type from NAME. Return 256 if NAME is unknown. */
4411 bfd_mach_o_get_section_type_from_name (bfd *abfd, const char *name)
4413 const bfd_mach_o_xlat_name *x;
4414 bfd_mach_o_backend_data *bed = bfd_mach_o_get_backend_data (abfd);
4416 for (x = bfd_mach_o_section_type_name; x->name; x++)
4417 if (strcmp (x->name, name) == 0)
4419 /* We found it... does the target support it? */
4420 if (bed->bfd_mach_o_section_type_valid_for_target == NULL
4421 || bed->bfd_mach_o_section_type_valid_for_target (x->val))
4422 return x->val; /* OK. */
4424 break; /* Not supported. */
4426 /* Maximum section ID = 0xff. */
4430 /* Get the section attribute from NAME. Return -1 if NAME is unknown. */
4433 bfd_mach_o_get_section_attribute_from_name (const char *name)
4435 const bfd_mach_o_xlat_name *x;
4437 for (x = bfd_mach_o_section_attribute_name; x->name; x++)
4438 if (strcmp (x->name, name) == 0)
4440 return (unsigned int)-1;
4444 bfd_mach_o_core_fetch_environment (bfd *abfd,
4445 unsigned char **rbuf,
4448 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
4449 unsigned long stackaddr = bfd_mach_o_stack_addr (mdata->header.cputype);
4452 for (i = 0; i < mdata->header.ncmds; i++)
4454 bfd_mach_o_load_command *cur = &mdata->commands[i];
4455 bfd_mach_o_segment_command *seg = NULL;
4457 if (cur->type != BFD_MACH_O_LC_SEGMENT)
4460 seg = &cur->command.segment;
4462 if ((seg->vmaddr + seg->vmsize) == stackaddr)
4464 unsigned long start = seg->fileoff;
4465 unsigned long end = seg->fileoff + seg->filesize;
4466 unsigned char *buf = bfd_malloc (1024);
4467 unsigned long size = 1024;
4471 bfd_size_type nread = 0;
4472 unsigned long offset;
4473 int found_nonnull = 0;
4475 if (size > (end - start))
4476 size = (end - start);
4478 buf = bfd_realloc_or_free (buf, size);
4482 if (bfd_seek (abfd, end - size, SEEK_SET) != 0)
4488 nread = bfd_bread (buf, size, abfd);
4496 for (offset = 4; offset <= size; offset += 4)
4500 val = *((unsigned long *) (buf + size - offset));
4501 if (! found_nonnull)
4506 else if (val == 0x0)
4508 unsigned long bottom;
4511 bottom = seg->fileoff + seg->filesize - offset;
4512 top = seg->fileoff + seg->filesize - 4;
4513 *rbuf = bfd_malloc (top - bottom);
4514 *rlen = top - bottom;
4516 memcpy (*rbuf, buf + size - *rlen, *rlen);
4522 if (size == (end - start))
4536 bfd_mach_o_core_file_failing_command (bfd *abfd)
4538 unsigned char *buf = NULL;
4539 unsigned int len = 0;
4542 ret = bfd_mach_o_core_fetch_environment (abfd, &buf, &len);
4546 return (char *) buf;
4550 bfd_mach_o_core_file_failing_signal (bfd *abfd ATTRIBUTE_UNUSED)
4555 static bfd_mach_o_uuid_command *
4556 bfd_mach_o_lookup_uuid_command (bfd *abfd)
4558 bfd_mach_o_load_command *uuid_cmd;
4559 int ncmd = bfd_mach_o_lookup_command (abfd, BFD_MACH_O_LC_UUID, &uuid_cmd);
4562 return &uuid_cmd->command.uuid;
4565 /* Return true if ABFD is a dSYM file and its UUID matches UUID_CMD. */
4568 bfd_mach_o_dsym_for_uuid_p (bfd *abfd, const bfd_mach_o_uuid_command *uuid_cmd)
4570 bfd_mach_o_uuid_command *dsym_uuid_cmd;
4573 BFD_ASSERT (uuid_cmd);
4575 if (!bfd_check_format (abfd, bfd_object))
4578 if (bfd_get_flavour (abfd) != bfd_target_mach_o_flavour
4579 || bfd_mach_o_get_data (abfd) == NULL
4580 || bfd_mach_o_get_data (abfd)->header.filetype != BFD_MACH_O_MH_DSYM)
4583 dsym_uuid_cmd = bfd_mach_o_lookup_uuid_command (abfd);
4584 if (dsym_uuid_cmd == NULL)
4587 if (memcmp (uuid_cmd->uuid, dsym_uuid_cmd->uuid,
4588 sizeof (uuid_cmd->uuid)) != 0)
4594 /* Find a BFD in DSYM_FILENAME which matches ARCH and UUID_CMD.
4595 The caller is responsible for closing the returned BFD object and
4596 its my_archive if the returned BFD is in a fat dSYM. */
4599 bfd_mach_o_find_dsym (const char *dsym_filename,
4600 const bfd_mach_o_uuid_command *uuid_cmd,
4601 const bfd_arch_info_type *arch)
4603 bfd *base_dsym_bfd, *dsym_bfd;
4605 BFD_ASSERT (uuid_cmd);
4607 base_dsym_bfd = bfd_openr (dsym_filename, NULL);
4608 if (base_dsym_bfd == NULL)
4611 dsym_bfd = bfd_mach_o_fat_extract (base_dsym_bfd, bfd_object, arch);
4612 if (bfd_mach_o_dsym_for_uuid_p (dsym_bfd, uuid_cmd))
4615 bfd_close (dsym_bfd);
4616 if (base_dsym_bfd != dsym_bfd)
4617 bfd_close (base_dsym_bfd);
4622 /* Return a BFD created from a dSYM file for ABFD.
4623 The caller is responsible for closing the returned BFD object, its
4624 filename, and its my_archive if the returned BFD is in a fat dSYM. */
4627 bfd_mach_o_follow_dsym (bfd *abfd)
4629 char *dsym_filename;
4630 bfd_mach_o_uuid_command *uuid_cmd;
4631 bfd *dsym_bfd, *base_bfd = abfd;
4632 const char *base_basename;
4634 if (abfd == NULL || bfd_get_flavour (abfd) != bfd_target_mach_o_flavour)
4637 if (abfd->my_archive)
4638 base_bfd = abfd->my_archive;
4639 /* BFD may have been opened from a stream. */
4640 if (base_bfd->filename == NULL)
4642 bfd_set_error (bfd_error_invalid_operation);
4645 base_basename = lbasename (base_bfd->filename);
4647 uuid_cmd = bfd_mach_o_lookup_uuid_command (abfd);
4648 if (uuid_cmd == NULL)
4651 /* TODO: We assume the DWARF file has the same as the binary's.
4652 It seems apple's GDB checks all files in the dSYM bundle directory.
4653 http://opensource.apple.com/source/gdb/gdb-1708/src/gdb/macosx/macosx-tdep.c
4655 dsym_filename = (char *)bfd_malloc (strlen (base_bfd->filename)
4656 + strlen (dsym_subdir) + 1
4657 + strlen (base_basename) + 1);
4658 sprintf (dsym_filename, "%s%s/%s",
4659 base_bfd->filename, dsym_subdir, base_basename);
4661 dsym_bfd = bfd_mach_o_find_dsym (dsym_filename, uuid_cmd,
4662 bfd_get_arch_info (abfd));
4663 if (dsym_bfd == NULL)
4664 free (dsym_filename);
4670 bfd_mach_o_find_nearest_line (bfd *abfd,
4674 const char **filename_ptr,
4675 const char **functionname_ptr,
4676 unsigned int *line_ptr)
4678 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
4681 switch (mdata->header.filetype)
4683 case BFD_MACH_O_MH_OBJECT:
4685 case BFD_MACH_O_MH_EXECUTE:
4686 case BFD_MACH_O_MH_DYLIB:
4687 case BFD_MACH_O_MH_BUNDLE:
4688 case BFD_MACH_O_MH_KEXT_BUNDLE:
4689 if (mdata->dwarf2_find_line_info == NULL)
4691 mdata->dsym_bfd = bfd_mach_o_follow_dsym (abfd);
4692 /* When we couldn't find dSYM for this binary, we look for
4693 the debug information in the binary itself. In this way,
4694 we won't try finding separated dSYM again because
4695 mdata->dwarf2_find_line_info will be filled. */
4696 if (! mdata->dsym_bfd)
4698 if (! _bfd_dwarf2_slurp_debug_info (abfd, mdata->dsym_bfd,
4699 dwarf_debug_sections, symbols,
4700 &mdata->dwarf2_find_line_info))
4707 if (_bfd_dwarf2_find_nearest_line (abfd, dwarf_debug_sections,
4708 section, symbols, offset,
4709 filename_ptr, functionname_ptr,
4711 &mdata->dwarf2_find_line_info))
4717 bfd_mach_o_close_and_cleanup (bfd *abfd)
4719 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
4720 if (bfd_get_format (abfd) == bfd_object && mdata != NULL)
4722 _bfd_dwarf2_cleanup_debug_info (abfd, &mdata->dwarf2_find_line_info);
4723 bfd_mach_o_free_cached_info (abfd);
4724 if (mdata->dsym_bfd != NULL)
4726 bfd *fat_bfd = mdata->dsym_bfd->my_archive;
4727 char *dsym_filename = (char *)(fat_bfd
4729 : mdata->dsym_bfd->filename);
4730 bfd_close (mdata->dsym_bfd);
4731 mdata->dsym_bfd = NULL;
4733 bfd_close (fat_bfd);
4734 free (dsym_filename);
4738 return _bfd_generic_close_and_cleanup (abfd);
4741 bfd_boolean bfd_mach_o_free_cached_info (bfd *abfd)
4743 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
4745 free (mdata->dyn_reloc_cache);
4746 mdata->dyn_reloc_cache = NULL;
4747 for (asect = abfd->sections; asect != NULL; asect = asect->next)
4749 free (asect->relocation);
4750 asect->relocation = NULL;
4756 #define bfd_mach_o_bfd_reloc_type_lookup _bfd_norelocs_bfd_reloc_type_lookup
4757 #define bfd_mach_o_bfd_reloc_name_lookup _bfd_norelocs_bfd_reloc_name_lookup
4759 #define bfd_mach_o_swap_reloc_in NULL
4760 #define bfd_mach_o_swap_reloc_out NULL
4761 #define bfd_mach_o_print_thread NULL
4762 #define bfd_mach_o_tgt_seg_table NULL
4763 #define bfd_mach_o_section_type_valid_for_tgt NULL
4765 #define TARGET_NAME mach_o_be_vec
4766 #define TARGET_STRING "mach-o-be"
4767 #define TARGET_ARCHITECTURE bfd_arch_unknown
4768 #define TARGET_BIG_ENDIAN 1
4769 #define TARGET_ARCHIVE 0
4770 #define TARGET_PRIORITY 1
4771 #include "mach-o-target.c"
4774 #undef TARGET_STRING
4775 #undef TARGET_ARCHITECTURE
4776 #undef TARGET_BIG_ENDIAN
4777 #undef TARGET_ARCHIVE
4778 #undef TARGET_PRIORITY
4780 #define TARGET_NAME mach_o_le_vec
4781 #define TARGET_STRING "mach-o-le"
4782 #define TARGET_ARCHITECTURE bfd_arch_unknown
4783 #define TARGET_BIG_ENDIAN 0
4784 #define TARGET_ARCHIVE 0
4785 #define TARGET_PRIORITY 1
4787 #include "mach-o-target.c"
4790 #undef TARGET_STRING
4791 #undef TARGET_ARCHITECTURE
4792 #undef TARGET_BIG_ENDIAN
4793 #undef TARGET_ARCHIVE
4794 #undef TARGET_PRIORITY
4796 /* Not yet handled: creating an archive. */
4797 #define bfd_mach_o_mkarchive _bfd_noarchive_mkarchive
4800 #define bfd_mach_o_read_ar_hdr _bfd_noarchive_read_ar_hdr
4801 #define bfd_mach_o_write_ar_hdr _bfd_noarchive_write_ar_hdr
4802 #define bfd_mach_o_slurp_armap _bfd_noarchive_slurp_armap
4803 #define bfd_mach_o_slurp_extended_name_table _bfd_noarchive_slurp_extended_name_table
4804 #define bfd_mach_o_construct_extended_name_table _bfd_noarchive_construct_extended_name_table
4805 #define bfd_mach_o_truncate_arname _bfd_noarchive_truncate_arname
4806 #define bfd_mach_o_write_armap _bfd_noarchive_write_armap
4807 #define bfd_mach_o_get_elt_at_index _bfd_noarchive_get_elt_at_index
4808 #define bfd_mach_o_generic_stat_arch_elt bfd_mach_o_fat_stat_arch_elt
4809 #define bfd_mach_o_update_armap_timestamp _bfd_noarchive_update_armap_timestamp
4811 #define TARGET_NAME mach_o_fat_vec
4812 #define TARGET_STRING "mach-o-fat"
4813 #define TARGET_ARCHITECTURE bfd_arch_unknown
4814 #define TARGET_BIG_ENDIAN 1
4815 #define TARGET_ARCHIVE 1
4816 #define TARGET_PRIORITY 0
4818 #include "mach-o-target.c"
4821 #undef TARGET_STRING
4822 #undef TARGET_ARCHITECTURE
4823 #undef TARGET_BIG_ENDIAN
4824 #undef TARGET_ARCHIVE
4825 #undef TARGET_PRIORITY