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More fixes for illegal memory accesses triggered by running objdump on fuzzed binaries.
[deliverable/binutils-gdb.git] / bfd / mach-o.c
CommitLineData
3af9a47b 1/* Mach-O support for BFD.
b90efa5b 2 Copyright (C) 1999-2015 Free Software Foundation, Inc.
3af9a47b
NC		 3
4 This file is part of BFD, the Binary File Descriptor library.
5
6 This program is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
cd123cb7 8 the Free Software Foundation; either version 3 of the License, or
3af9a47b
NC		 9 (at your option) any later version.
10
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
15
16 You should have received a copy of the GNU General Public License
a95a4550 17 along with this program; if not, write to the Free Software
cd123cb7
NC		 18 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
19 MA 02110-1301, USA. */
3af9a47b 20
3db64b00 21#include "sysdep.h"
3af9a47b
NC		 22#include "mach-o.h"
23#include "bfd.h"
3af9a47b
NC		 24#include "libbfd.h"
25#include "libiberty.h"
15e1c58a 26#include "aout/stab_gnu.h"
46d1c23b
TG		 27#include "mach-o/reloc.h"
28#include "mach-o/external.h"
3af9a47b 29#include <ctype.h>
7f307238
IS		 30#include <stdlib.h>
31#include <string.h>
3af9a47b 32
154a1ee5
TG		 33#define bfd_mach_o_object_p bfd_mach_o_gen_object_p
34#define bfd_mach_o_core_p bfd_mach_o_gen_core_p
42fa0891 35#define bfd_mach_o_mkobject bfd_mach_o_gen_mkobject
116c20d2 36
92bc0e80
TG		 37#define FILE_ALIGN(off, algn) \
38 (((off) + ((file_ptr) 1 << (algn)) - 1) & ((file_ptr) -1 << (algn)))
39
c9ffd2ea
TG		 40static bfd_boolean
41bfd_mach_o_read_dyld_content (bfd *abfd, bfd_mach_o_dyld_info_command *cmd);
42
c2f09c75 43unsigned int
1e8a024a
TG		 44bfd_mach_o_version (bfd *abfd)
45{
46 bfd_mach_o_data_struct *mdata = NULL;
47
48 BFD_ASSERT (bfd_mach_o_valid (abfd));
046b007d 49 mdata = bfd_mach_o_get_data (abfd);
1e8a024a
TG		 50
51 return mdata->header.version;
52}
53
b34976b6 54bfd_boolean
116c20d2 55bfd_mach_o_valid (bfd *abfd)
3af9a47b
NC		 56{
57 if (abfd == NULL || abfd->xvec == NULL)
154a1ee5 58 return FALSE;
3af9a47b 59
154a1ee5
TG		 60 if (abfd->xvec->flavour != bfd_target_mach_o_flavour)
61 return FALSE;
3af9a47b 62
046b007d 63 if (bfd_mach_o_get_data (abfd) == NULL)
154a1ee5
TG		 64 return FALSE;
65 return TRUE;
66}
67
c2f09c75
TG		 68static INLINE bfd_boolean
69mach_o_wide_p (bfd_mach_o_header *header)
70{
71 switch (header->version)
72 {
73 case 1:
74 return FALSE;
75 case 2:
76 return TRUE;
77 default:
78 BFD_FAIL ();
79 return FALSE;
80 }
81}
82
83static INLINE bfd_boolean
84bfd_mach_o_wide_p (bfd *abfd)
85{
046b007d 86 return mach_o_wide_p (&bfd_mach_o_get_data (abfd)->header);
c2f09c75 87}
68ffbac6 88
154a1ee5
TG		 89/* Tables to translate well known Mach-O segment/section names to bfd
90 names. Use of canonical names (such as .text or .debug_frame) is required
91 by gdb. */
92
a4551119
TG		 93/* __TEXT Segment. */
94static const mach_o_section_name_xlat text_section_names_xlat[] =
154a1ee5 95 {
68ffbac6 96 { ".text", "__text",
a4551119
TG		 97 SEC_CODE | SEC_LOAD, BFD_MACH_O_S_REGULAR,
98 BFD_MACH_O_S_ATTR_PURE_INSTRUCTIONS, 0},
99 { ".const", "__const",
100 SEC_READONLY | SEC_DATA | SEC_LOAD, BFD_MACH_O_S_REGULAR,
101 BFD_MACH_O_S_ATTR_NONE, 0},
102 { ".static_const", "__static_const",
103 SEC_READONLY | SEC_DATA | SEC_LOAD, BFD_MACH_O_S_REGULAR,
104 BFD_MACH_O_S_ATTR_NONE, 0},
105 { ".cstring", "__cstring",
106 SEC_READONLY | SEC_DATA | SEC_LOAD | SEC_MERGE | SEC_STRINGS,
107 BFD_MACH_O_S_CSTRING_LITERALS,
108 BFD_MACH_O_S_ATTR_NONE, 0},
109 { ".literal4", "__literal4",
110 SEC_READONLY | SEC_DATA | SEC_LOAD, BFD_MACH_O_S_4BYTE_LITERALS,
111 BFD_MACH_O_S_ATTR_NONE, 2},
112 { ".literal8", "__literal8",
113 SEC_READONLY | SEC_DATA | SEC_LOAD, BFD_MACH_O_S_8BYTE_LITERALS,
114 BFD_MACH_O_S_ATTR_NONE, 3},
115 { ".literal16", "__literal16",
116 SEC_READONLY | SEC_DATA | SEC_LOAD, BFD_MACH_O_S_16BYTE_LITERALS,
117 BFD_MACH_O_S_ATTR_NONE, 4},
118 { ".constructor", "__constructor",
119 SEC_CODE | SEC_LOAD, BFD_MACH_O_S_REGULAR,
120 BFD_MACH_O_S_ATTR_NONE, 0},
121 { ".destructor", "__destructor",
122 SEC_CODE | SEC_LOAD, BFD_MACH_O_S_REGULAR,
123 BFD_MACH_O_S_ATTR_NONE, 0},
124 { ".eh_frame", "__eh_frame",
632039e0 125 SEC_READONLY | SEC_DATA | SEC_LOAD, BFD_MACH_O_S_COALESCED,
a4551119
TG		 126 BFD_MACH_O_S_ATTR_LIVE_SUPPORT
127 | BFD_MACH_O_S_ATTR_STRIP_STATIC_SYMS
632039e0 128 | BFD_MACH_O_S_ATTR_NO_TOC, 2},
a4551119 129 { NULL, NULL, 0, 0, 0, 0}
154a1ee5
TG		 130 };
131
a4551119
TG		 132/* __DATA Segment. */
133static const mach_o_section_name_xlat data_section_names_xlat[] =
154a1ee5 134 {
a4551119
TG		 135 { ".data", "__data",
136 SEC_DATA | SEC_LOAD, BFD_MACH_O_S_REGULAR,
137 BFD_MACH_O_S_ATTR_NONE, 0},
138 { ".bss", "__bss",
139 SEC_NO_FLAGS, BFD_MACH_O_S_ZEROFILL,
140 BFD_MACH_O_S_ATTR_NONE, 0},
141 { ".const_data", "__const",
142 SEC_DATA | SEC_LOAD, BFD_MACH_O_S_REGULAR,
143 BFD_MACH_O_S_ATTR_NONE, 0},
144 { ".static_data", "__static_data",
145 SEC_DATA | SEC_LOAD, BFD_MACH_O_S_REGULAR,
146 BFD_MACH_O_S_ATTR_NONE, 0},
147 { ".mod_init_func", "__mod_init_func",
148 SEC_DATA | SEC_LOAD, BFD_MACH_O_S_MOD_INIT_FUNC_POINTERS,
149 BFD_MACH_O_S_ATTR_NONE, 2},
150 { ".mod_term_func", "__mod_term_func",
151 SEC_DATA | SEC_LOAD, BFD_MACH_O_S_MOD_FINI_FUNC_POINTERS,
152 BFD_MACH_O_S_ATTR_NONE, 2},
153 { ".dyld", "__dyld",
154 SEC_DATA | SEC_LOAD, BFD_MACH_O_S_REGULAR,
155 BFD_MACH_O_S_ATTR_NONE, 0},
156 { ".cfstring", "__cfstring",
157 SEC_DATA | SEC_LOAD, BFD_MACH_O_S_REGULAR,
158 BFD_MACH_O_S_ATTR_NONE, 2},
159 { NULL, NULL, 0, 0, 0, 0}
154a1ee5
TG		 160 };
161
a4551119
TG		 162/* __DWARF Segment. */
163static const mach_o_section_name_xlat dwarf_section_names_xlat[] =
154a1ee5 164 {
a4551119
TG		 165 { ".debug_frame", "__debug_frame",
166 SEC_DEBUGGING, BFD_MACH_O_S_REGULAR,
167 BFD_MACH_O_S_ATTR_DEBUG, 0},
168 { ".debug_info", "__debug_info",
169 SEC_DEBUGGING, BFD_MACH_O_S_REGULAR,
170 BFD_MACH_O_S_ATTR_DEBUG, 0},
171 { ".debug_abbrev", "__debug_abbrev",
172 SEC_DEBUGGING, BFD_MACH_O_S_REGULAR,
173 BFD_MACH_O_S_ATTR_DEBUG, 0},
174 { ".debug_aranges", "__debug_aranges",
175 SEC_DEBUGGING, BFD_MACH_O_S_REGULAR,
176 BFD_MACH_O_S_ATTR_DEBUG, 0},
177 { ".debug_macinfo", "__debug_macinfo",
178 SEC_DEBUGGING, BFD_MACH_O_S_REGULAR,
179 BFD_MACH_O_S_ATTR_DEBUG, 0},
180 { ".debug_line", "__debug_line",
181 SEC_DEBUGGING, BFD_MACH_O_S_REGULAR,
182 BFD_MACH_O_S_ATTR_DEBUG, 0},
183 { ".debug_loc", "__debug_loc",
184 SEC_DEBUGGING, BFD_MACH_O_S_REGULAR,
185 BFD_MACH_O_S_ATTR_DEBUG, 0},
186 { ".debug_pubnames", "__debug_pubnames",
187 SEC_DEBUGGING, BFD_MACH_O_S_REGULAR,
188 BFD_MACH_O_S_ATTR_DEBUG, 0},
189 { ".debug_pubtypes", "__debug_pubtypes",
190 SEC_DEBUGGING, BFD_MACH_O_S_REGULAR,
191 BFD_MACH_O_S_ATTR_DEBUG, 0},
192 { ".debug_str", "__debug_str",
193 SEC_DEBUGGING, BFD_MACH_O_S_REGULAR,
194 BFD_MACH_O_S_ATTR_DEBUG, 0},
195 { ".debug_ranges", "__debug_ranges",
196 SEC_DEBUGGING, BFD_MACH_O_S_REGULAR,
197 BFD_MACH_O_S_ATTR_DEBUG, 0},
198 { ".debug_macro", "__debug_macro",
199 SEC_DEBUGGING, BFD_MACH_O_S_REGULAR,
200 BFD_MACH_O_S_ATTR_DEBUG, 0},
671a6cbe
NC		 201 { ".debug_gdb_scripts", "__debug_gdb_scri",
202 SEC_DEBUGGING, BFD_MACH_O_S_REGULAR,
203 BFD_MACH_O_S_ATTR_DEBUG, 0},
a4551119 204 { NULL, NULL, 0, 0, 0, 0}
154a1ee5
TG		 205 };
206
a4551119
TG		 207/* __OBJC Segment. */
208static const mach_o_section_name_xlat objc_section_names_xlat[] =
209 {
210 { ".objc_class", "__class",
211 SEC_DATA | SEC_LOAD, BFD_MACH_O_S_REGULAR,
212 BFD_MACH_O_S_ATTR_NO_DEAD_STRIP, 0},
213 { ".objc_meta_class", "__meta_class",
214 SEC_DATA | SEC_LOAD, BFD_MACH_O_S_REGULAR,
215 BFD_MACH_O_S_ATTR_NO_DEAD_STRIP, 0},
216 { ".objc_cat_cls_meth", "__cat_cls_meth",
217 SEC_DATA | SEC_LOAD, BFD_MACH_O_S_REGULAR,
218 BFD_MACH_O_S_ATTR_NO_DEAD_STRIP, 0},
219 { ".objc_cat_inst_meth", "__cat_inst_meth",
220 SEC_DATA | SEC_LOAD, BFD_MACH_O_S_REGULAR,
221 BFD_MACH_O_S_ATTR_NO_DEAD_STRIP, 0},
222 { ".objc_protocol", "__protocol",
223 SEC_DATA | SEC_LOAD, BFD_MACH_O_S_REGULAR,
224 BFD_MACH_O_S_ATTR_NO_DEAD_STRIP, 0},
225 { ".objc_string_object", "__string_object",
226 SEC_DATA | SEC_LOAD, BFD_MACH_O_S_REGULAR,
227 BFD_MACH_O_S_ATTR_NO_DEAD_STRIP, 0},
228 { ".objc_cls_meth", "__cls_meth",
229 SEC_DATA | SEC_LOAD, BFD_MACH_O_S_REGULAR,
230 BFD_MACH_O_S_ATTR_NO_DEAD_STRIP, 0},
231 { ".objc_inst_meth", "__inst_meth",
232 SEC_DATA | SEC_LOAD, BFD_MACH_O_S_REGULAR,
233 BFD_MACH_O_S_ATTR_NO_DEAD_STRIP, 0},
234 { ".objc_cls_refs", "__cls_refs",
235 SEC_DATA | SEC_LOAD, BFD_MACH_O_S_LITERAL_POINTERS,
236 BFD_MACH_O_S_ATTR_NO_DEAD_STRIP, 0},
237 { ".objc_message_refs", "__message_refs",
238 SEC_DATA | SEC_LOAD, BFD_MACH_O_S_LITERAL_POINTERS,
239 BFD_MACH_O_S_ATTR_NO_DEAD_STRIP, 0},
240 { ".objc_symbols", "__symbols",
241 SEC_DATA | SEC_LOAD, BFD_MACH_O_S_REGULAR,
242 BFD_MACH_O_S_ATTR_NO_DEAD_STRIP, 0},
243 { ".objc_category", "__category",
244 SEC_DATA | SEC_LOAD, BFD_MACH_O_S_REGULAR,
245 BFD_MACH_O_S_ATTR_NO_DEAD_STRIP, 0},
246 { ".objc_class_vars", "__class_vars",
247 SEC_DATA | SEC_LOAD, BFD_MACH_O_S_REGULAR,
248 BFD_MACH_O_S_ATTR_NO_DEAD_STRIP, 0},
249 { ".objc_instance_vars", "__instance_vars",
250 SEC_DATA | SEC_LOAD, BFD_MACH_O_S_REGULAR,
251 BFD_MACH_O_S_ATTR_NO_DEAD_STRIP, 0},
252 { ".objc_module_info", "__module_info",
253 SEC_DATA | SEC_LOAD, BFD_MACH_O_S_REGULAR,
254 BFD_MACH_O_S_ATTR_NO_DEAD_STRIP, 0},
255 { ".objc_selector_strs", "__selector_strs",
256 SEC_DATA | SEC_LOAD, BFD_MACH_O_S_CSTRING_LITERALS,
257 BFD_MACH_O_S_ATTR_NO_DEAD_STRIP, 0},
258 { ".objc_image_info", "__image_info",
259 SEC_DATA | SEC_LOAD, BFD_MACH_O_S_REGULAR,
260 BFD_MACH_O_S_ATTR_NO_DEAD_STRIP, 0},
261 { ".objc_selector_fixup", "__sel_fixup",
262 SEC_DATA | SEC_LOAD, BFD_MACH_O_S_REGULAR,
263 BFD_MACH_O_S_ATTR_NO_DEAD_STRIP, 0},
264 /* Objc V1 */
265 { ".objc1_class_ext", "__class_ext",
266 SEC_DATA | SEC_LOAD, BFD_MACH_O_S_REGULAR,
267 BFD_MACH_O_S_ATTR_NO_DEAD_STRIP, 0},
268 { ".objc1_property_list", "__property",
269 SEC_DATA | SEC_LOAD, BFD_MACH_O_S_REGULAR,
270 BFD_MACH_O_S_ATTR_NO_DEAD_STRIP, 0},
271 { ".objc1_protocol_ext", "__protocol_ext",
272 SEC_DATA | SEC_LOAD, BFD_MACH_O_S_REGULAR,
273 BFD_MACH_O_S_ATTR_NO_DEAD_STRIP, 0},
274 { NULL, NULL, 0, 0, 0, 0}
275 };
5a5cbf72 276
a4551119 277static const mach_o_segment_name_xlat segsec_names_xlat[] =
154a1ee5 278 {
154a1ee5
TG		 279 { "__TEXT", text_section_names_xlat },
280 { "__DATA", data_section_names_xlat },
5a5cbf72 281 { "__DWARF", dwarf_section_names_xlat },
a4551119 282 { "__OBJC", objc_section_names_xlat },
154a1ee5
TG		 283 { NULL, NULL }
284 };
285
2ca7691a
TG		 286static const char dsym_subdir[] = ".dSYM/Contents/Resources/DWARF";
287
a4551119
TG		 288/* For both cases bfd-name => mach-o name and vice versa, the specific target
289 is checked before the generic. This allows a target (e.g. ppc for cstring)
290 to override the generic definition with a more specific one. */
154a1ee5 291
a4551119
TG		 292/* Fetch the translation from a Mach-O section designation (segment, section)
293 as a bfd short name, if one exists. Otherwise return NULL.
68ffbac6 294
a4551119
TG		 295 Allow the segment and section names to be unterminated 16 byte arrays. */
296
297const mach_o_section_name_xlat *
298bfd_mach_o_section_data_for_mach_sect (bfd *abfd, const char *segname,
299 const char *sectname)
154a1ee5
TG		 300{
301 const struct mach_o_segment_name_xlat *seg;
a4551119
TG		 302 const mach_o_section_name_xlat *sec;
303 bfd_mach_o_backend_data *bed = bfd_mach_o_get_backend_data (abfd);
154a1ee5 304
a4551119
TG		 305 /* First try any target-specific translations defined... */
306 if (bed->segsec_names_xlat)
307 for (seg = bed->segsec_names_xlat; seg->segname; seg++)
308 if (strncmp (seg->segname, segname, BFD_MACH_O_SEGNAME_SIZE) == 0)
309 for (sec = seg->sections; sec->mach_o_name; sec++)
310 if (strncmp (sec->mach_o_name, sectname,
311 BFD_MACH_O_SECTNAME_SIZE) == 0)
312 return sec;
8462aec7 313
a4551119 314 /* ... and then the Mach-O generic ones. */
154a1ee5 315 for (seg = segsec_names_xlat; seg->segname; seg++)
a4551119
TG		 316 if (strncmp (seg->segname, segname, BFD_MACH_O_SEGNAME_SIZE) == 0)
317 for (sec = seg->sections; sec->mach_o_name; sec++)
318 if (strncmp (sec->mach_o_name, sectname,
319 BFD_MACH_O_SECTNAME_SIZE) == 0)
320 return sec;
154a1ee5 321
68ffbac6 322 return NULL;
53d58d96
TG		 323}
324
a4551119 325/* If the bfd_name for this section is a 'canonical' form for which we
68ffbac6 326 know the Mach-O data, return the segment name and the data for the
a4551119 327 Mach-O equivalent. Otherwise return NULL. */
7ba695a9 328
a4551119
TG		 329const mach_o_section_name_xlat *
330bfd_mach_o_section_data_for_bfd_name (bfd *abfd, const char *bfd_name,
331 const char **segname)
53d58d96 332{
a4551119
TG		 333 const struct mach_o_segment_name_xlat *seg;
334 const mach_o_section_name_xlat *sec;
335 bfd_mach_o_backend_data *bed = bfd_mach_o_get_backend_data (abfd);
336 *segname = NULL;
337
338 if (bfd_name[0] != '.')
339 return NULL;
340
341 /* First try any target-specific translations defined... */
342 if (bed->segsec_names_xlat)
343 for (seg = bed->segsec_names_xlat; seg->segname; seg++)
344 for (sec = seg->sections; sec->bfd_name; sec++)
345 if (strcmp (bfd_name, sec->bfd_name) == 0)
346 {
347 *segname = seg->segname;
348 return sec;
349 }
350
351 /* ... and then the Mach-O generic ones. */
352 for (seg = segsec_names_xlat; seg->segname; seg++)
353 for (sec = seg->sections; sec->bfd_name; sec++)
354 if (strcmp (bfd_name, sec->bfd_name) == 0)
355 {
356 *segname = seg->segname;
357 return sec;
358 }
359
68ffbac6 360 return NULL;
a4551119
TG		 361}
362
363/* Convert Mach-O section name to BFD.
364
68ffbac6 365 Try to use standard/canonical names, for which we have tables including
a4551119
TG		 366 default flag settings - which are returned. Otherwise forge a new name
367 in the form "<segmentname>.<sectionname>" this will be prefixed with
368 LC_SEGMENT. if the segment name does not begin with an underscore.
369
370 SEGNAME and SECTNAME are 16 byte arrays (they do not need to be NUL-
371 terminated if the name length is exactly 16 bytes - but must be if the name
372 length is less than 16 characters). */
373
374void
375bfd_mach_o_convert_section_name_to_bfd (bfd *abfd, const char *segname,
376 const char *secname, const char **name,
377 flagword *flags)
378{
379 const mach_o_section_name_xlat *xlat;
53d58d96
TG		 380 char *res;
381 unsigned int len;
382 const char *pfx = "";
383
a4551119
TG		 384 *name = NULL;
385 *flags = SEC_NO_FLAGS;
53d58d96 386
68ffbac6 387 /* First search for a canonical name...
a4551119
TG		 388 xlat will be non-null if there is an entry for segname, secname. */
389 xlat = bfd_mach_o_section_data_for_mach_sect (abfd, segname, secname);
390 if (xlat)
391 {
392 len = strlen (xlat->bfd_name);
64d29018 393 res = bfd_alloc (abfd, len + 1);
a4551119
TG		 394 if (res == NULL)
395 return;
396 memcpy (res, xlat->bfd_name, len+1);
397 *name = res;
398 *flags = xlat->bfd_flags;
399 return;
400 }
401
402 /* ... else we make up a bfd name from the segment concatenated with the
403 section. */
154a1ee5 404
7ba695a9 405 len = 16 + 1 + 16 + 1;
154a1ee5 406
c2f09c75
TG		 407 /* Put "LC_SEGMENT." prefix if the segment name is weird (ie doesn't start
408 with an underscore. */
f1bde64c 409 if (segname[0] != '_')
c2f09c75
TG		 410 {
411 static const char seg_pfx[] = "LC_SEGMENT.";
412
413 pfx = seg_pfx;
414 len += sizeof (seg_pfx) - 1;
415 }
416
154a1ee5
TG		 417 res = bfd_alloc (abfd, len);
418 if (res == NULL)
8462aec7 419 return;
a4551119 420 snprintf (res, len, "%s%.16s.%.16s", pfx, segname, secname);
8462aec7 421 *name = res;
154a1ee5
TG		 422}
423
a4551119 424/* Convert a bfd section name to a Mach-O segment + section name.
154a1ee5 425
a4551119
TG		 426 If the name is a canonical one for which we have a Darwin match
427 return the translation table - which contains defaults for flags,
428 type, attribute and default alignment data.
429
68ffbac6 430 Otherwise, expand the bfd_name (assumed to be in the form
a4551119
TG		 431 "[LC_SEGMENT.]<segmentname>.<sectionname>") and return NULL. */
432
433static const mach_o_section_name_xlat *
154a1ee5
TG		 434bfd_mach_o_convert_section_name_to_mach_o (bfd *abfd ATTRIBUTE_UNUSED,
435 asection *sect,
436 bfd_mach_o_section *section)
437{
a4551119 438 const mach_o_section_name_xlat *xlat;
154a1ee5 439 const char *name = bfd_get_section_name (abfd, sect);
a4551119 440 const char *segname;
154a1ee5
TG		 441 const char *dot;
442 unsigned int len;
443 unsigned int seglen;
444 unsigned int seclen;
445
a4551119
TG		 446 memset (section->segname, 0, BFD_MACH_O_SEGNAME_SIZE + 1);
447 memset (section->sectname, 0, BFD_MACH_O_SECTNAME_SIZE + 1);
448
449 /* See if is a canonical name ... */
450 xlat = bfd_mach_o_section_data_for_bfd_name (abfd, name, &segname);
451 if (xlat)
452 {
453 strcpy (section->segname, segname);
454 strcpy (section->sectname, xlat->mach_o_name);
455 return xlat;
456 }
154a1ee5 457
a4551119
TG		 458 /* .. else we convert our constructed one back to Mach-O.
459 Strip LC_SEGMENT. prefix, if present. */
154a1ee5
TG		 460 if (strncmp (name, "LC_SEGMENT.", 11) == 0)
461 name += 11;
462
463 /* Find a dot. */
464 dot = strchr (name, '.');
465 len = strlen (name);
466
467 /* Try to split name into segment and section names. */
468 if (dot && dot != name)
469 {
470 seglen = dot - name;
471 seclen = len - (dot + 1 - name);
472
ca148c5a
TG		 473 if (seglen <= BFD_MACH_O_SEGNAME_SIZE
474 && seclen <= BFD_MACH_O_SECTNAME_SIZE)
154a1ee5
TG		 475 {
476 memcpy (section->segname, name, seglen);
477 section->segname[seglen] = 0;
478 memcpy (section->sectname, dot + 1, seclen);
479 section->sectname[seclen] = 0;
a4551119 480 return NULL;
154a1ee5
TG		 481 }
482 }
483
a4551119
TG		 484 /* The segment and section names are both missing - don't make them
485 into dots. */
486 if (dot && dot == name)
487 return NULL;
488
489 /* Just duplicate the name into both segment and section. */
154a1ee5
TG		 490 if (len > 16)
491 len = 16;
492 memcpy (section->segname, name, len);
493 section->segname[len] = 0;
494 memcpy (section->sectname, name, len);
495 section->sectname[len] = 0;
a4551119 496 return NULL;
3af9a47b
NC		 497}
498
b2b62060
TG		 499/* Return the size of an entry for section SEC.
500 Must be called only for symbol pointer section and symbol stubs
501 sections. */
502
c5012cd8 503unsigned int
b2b62060
TG		 504bfd_mach_o_section_get_entry_size (bfd *abfd, bfd_mach_o_section *sec)
505{
506 switch (sec->flags & BFD_MACH_O_SECTION_TYPE_MASK)
507 {
508 case BFD_MACH_O_S_NON_LAZY_SYMBOL_POINTERS:
509 case BFD_MACH_O_S_LAZY_SYMBOL_POINTERS:
510 return bfd_mach_o_wide_p (abfd) ? 8 : 4;
511 case BFD_MACH_O_S_SYMBOL_STUBS:
512 return sec->reserved2;
513 default:
514 BFD_FAIL ();
515 return 0;
516 }
517}
518
519/* Return the number of indirect symbols for a section.
520 Must be called only for symbol pointer section and symbol stubs
521 sections. */
522
c5012cd8 523unsigned int
b2b62060
TG		 524bfd_mach_o_section_get_nbr_indirect (bfd *abfd, bfd_mach_o_section *sec)
525{
526 unsigned int elsz;
527
528 elsz = bfd_mach_o_section_get_entry_size (abfd, sec);
529 if (elsz == 0)
530 return 0;
531 else
532 return sec->size / elsz;
533}
534
c9ffd2ea
TG		 535/* Append command CMD to ABFD. Note that header.ncmds is not updated. */
536
537static void
538bfd_mach_o_append_command (bfd *abfd, bfd_mach_o_load_command *cmd)
539{
540 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
541
542 if (mdata->last_command != NULL)
543 mdata->last_command->next = cmd;
544 else
545 mdata->first_command = cmd;
546 mdata->last_command = cmd;
547 cmd->next = NULL;
548}
b2b62060 549
3af9a47b
NC		 550/* Copy any private info we understand from the input symbol
551 to the output symbol. */
552
154a1ee5 553bfd_boolean
116c20d2 554bfd_mach_o_bfd_copy_private_symbol_data (bfd *ibfd ATTRIBUTE_UNUSED,
b22161d6 555 asymbol *isymbol,
116c20d2 556 bfd *obfd ATTRIBUTE_UNUSED,
b22161d6
IS		 557 asymbol *osymbol)
558{
559 bfd_mach_o_asymbol *os, *is;
c9ffd2ea 560
b22161d6
IS		 561 os = (bfd_mach_o_asymbol *)osymbol;
562 is = (bfd_mach_o_asymbol *)isymbol;
563 os->n_type = is->n_type;
564 os->n_sect = is->n_sect;
565 os->n_desc = is->n_desc;
566 os->symbol.udata.i = is->symbol.udata.i;
c9ffd2ea 567
b34976b6 568 return TRUE;
3af9a47b
NC		 569}
570
571/* Copy any private info we understand from the input section
572 to the output section. */
573
154a1ee5 574bfd_boolean
c9ffd2ea
TG		 575bfd_mach_o_bfd_copy_private_section_data (bfd *ibfd, asection *isection,
576 bfd *obfd, asection *osection)
a4551119 577{
c9ffd2ea
TG		 578 bfd_mach_o_section *os = bfd_mach_o_get_mach_o_section (osection);
579 bfd_mach_o_section *is = bfd_mach_o_get_mach_o_section (isection);
68ffbac6 580
c9ffd2ea
TG		 581 if (ibfd->xvec->flavour != bfd_target_mach_o_flavour
582 || obfd->xvec->flavour != bfd_target_mach_o_flavour)
583 return TRUE;
584
585 BFD_ASSERT (is != NULL && os != NULL);
586
587 os->flags = is->flags;
588 os->reserved1 = is->reserved1;
589 os->reserved2 = is->reserved2;
590 os->reserved3 = is->reserved3;
a4551119 591
b34976b6 592 return TRUE;
3af9a47b
NC		 593}
594
595/* Copy any private info we understand from the input bfd
596 to the output bfd. */
597
154a1ee5 598bfd_boolean
967b2c53 599bfd_mach_o_bfd_copy_private_header_data (bfd *ibfd, bfd *obfd)
3af9a47b 600{
c9ffd2ea
TG		 601 bfd_mach_o_data_struct *imdata;
602 bfd_mach_o_data_struct *omdata;
603 bfd_mach_o_load_command *icmd;
604
154a1ee5
TG		 605 if (bfd_get_flavour (ibfd) != bfd_target_mach_o_flavour
606 || bfd_get_flavour (obfd) != bfd_target_mach_o_flavour)
607 return TRUE;
608
3af9a47b
NC		 609 BFD_ASSERT (bfd_mach_o_valid (ibfd));
610 BFD_ASSERT (bfd_mach_o_valid (obfd));
611
c9ffd2ea
TG		 612 imdata = bfd_mach_o_get_data (ibfd);
613 omdata = bfd_mach_o_get_data (obfd);
614
615 /* Copy header flags. */
616 omdata->header.flags = imdata->header.flags;
617
618 /* Copy commands. */
619 for (icmd = imdata->first_command; icmd != NULL; icmd = icmd->next)
620 {
621 bfd_mach_o_load_command *ocmd;
622
623 switch (icmd->type)
624 {
625 case BFD_MACH_O_LC_LOAD_DYLIB:
626 case BFD_MACH_O_LC_LOAD_DYLINKER:
627 case BFD_MACH_O_LC_DYLD_INFO:
628 /* Command is copied. */
629 ocmd = bfd_alloc (obfd, sizeof (bfd_mach_o_load_command));
630 if (ocmd == NULL)
631 return FALSE;
632
633 /* Copy common fields. */
634 ocmd->type = icmd->type;
635 ocmd->type_required = icmd->type_required;
636 ocmd->offset = 0;
637 ocmd->len = icmd->len;
638 break;
639
640 default:
641 /* Command is not copied. */
642 continue;
643 break;
644 }
645
646 switch (icmd->type)
647 {
648 case BFD_MACH_O_LC_LOAD_DYLIB:
649 {
650 bfd_mach_o_dylib_command *idy = &icmd->command.dylib;
651 bfd_mach_o_dylib_command *ody = &ocmd->command.dylib;
652
653 ody->name_offset = idy->name_offset;
654 ody->timestamp = idy->timestamp;
655 ody->current_version = idy->current_version;
656 ody->compatibility_version = idy->compatibility_version;
657 ody->name_str = idy->name_str;
658 }
659 break;
660
661 case BFD_MACH_O_LC_LOAD_DYLINKER:
662 {
663 bfd_mach_o_dylinker_command *idy = &icmd->command.dylinker;
664 bfd_mach_o_dylinker_command *ody = &ocmd->command.dylinker;
665
666 ody->name_offset = idy->name_offset;
667 ody->name_str = idy->name_str;
668 }
669 break;
670
671 case BFD_MACH_O_LC_DYLD_INFO:
672 {
673 bfd_mach_o_dyld_info_command *idy = &icmd->command.dyld_info;
674 bfd_mach_o_dyld_info_command *ody = &ocmd->command.dyld_info;
675
676 if (bfd_mach_o_read_dyld_content (ibfd, idy))
677 {
678 ody->rebase_size = idy->rebase_size;
679 ody->rebase_content = idy->rebase_content;
680
681 ody->bind_size = idy->bind_size;
682 ody->bind_content = idy->bind_content;
683
684 ody->weak_bind_size = idy->weak_bind_size;
685 ody->weak_bind_content = idy->weak_bind_content;
686
687 ody->lazy_bind_size = idy->lazy_bind_size;
688 ody->lazy_bind_content = idy->lazy_bind_content;
689
690 ody->export_size = idy->export_size;
691 ody->export_content = idy->export_content;
692 }
86eafac0
NC		 693 /* PR 17512L: file: 730e492d. */
694 else
695 {
696 ody->rebase_size =
697 ody->bind_size =
698 ody->weak_bind_size =
699 ody->lazy_bind_size =
700 ody->export_size = 0;
701 ody->rebase_content =
702 ody->bind_content =
703 ody->weak_bind_content =
704 ody->lazy_bind_content =
705 ody->export_content = NULL;
706 }
c9ffd2ea
TG		 707 }
708 break;
709
710 default:
711 /* That command should be handled. */
712 abort ();
713 }
714
715 /* Insert command. */
716 bfd_mach_o_append_command (obfd, ocmd);
717 }
154a1ee5 718
b34976b6 719 return TRUE;
3af9a47b
NC		 720}
721
0c9ef0f0
TG		 722/* This allows us to set up to 32 bits of flags (unless we invent some
723 fiendish scheme to subdivide). For now, we'll just set the file flags
724 without error checking - just overwrite. */
68ffbac6 725
0c9ef0f0
TG		 726bfd_boolean
727bfd_mach_o_bfd_set_private_flags (bfd *abfd, flagword flags)
728{
729 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
730
731 if (!mdata)
732 return FALSE;
733
734 mdata->header.flags = flags;
735 return TRUE;
736}
737
046b007d 738/* Count the total number of symbols. */
154a1ee5 739
3af9a47b 740static long
116c20d2 741bfd_mach_o_count_symbols (bfd *abfd)
3af9a47b 742{
046b007d 743 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
3af9a47b 744
046b007d
TG		 745 if (mdata->symtab == NULL)
746 return 0;
747 return mdata->symtab->nsyms;
3af9a47b
NC		 748}
749
154a1ee5 750long
116c20d2 751bfd_mach_o_get_symtab_upper_bound (bfd *abfd)
3af9a47b
NC		 752{
753 long nsyms = bfd_mach_o_count_symbols (abfd);
754
3af9a47b
NC		 755 return ((nsyms + 1) * sizeof (asymbol *));
756}
757
154a1ee5 758long
116c20d2 759bfd_mach_o_canonicalize_symtab (bfd *abfd, asymbol **alocation)
3af9a47b 760{
046b007d 761 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
3af9a47b 762 long nsyms = bfd_mach_o_count_symbols (abfd);
046b007d
TG		 763 bfd_mach_o_symtab_command *sym = mdata->symtab;
764 unsigned long j;
3af9a47b
NC		 765
766 if (nsyms < 0)
767 return nsyms;
768
092d27ff
TG		 769 if (nsyms == 0)
770 {
771 /* Do not try to read symbols if there are none. */
772 alocation[0] = NULL;
773 return 0;
774 }
775
afbb9e17 776 if (!bfd_mach_o_read_symtab_symbols (abfd))
3af9a47b 777 {
afbb9e17
TG		 778 (*_bfd_error_handler)
779 (_("bfd_mach_o_canonicalize_symtab: unable to load symbols"));
046b007d
TG		 780 return 0;
781 }
3af9a47b 782
046b007d 783 BFD_ASSERT (sym->symbols != NULL);
3af9a47b 784
046b007d
TG		 785 for (j = 0; j < sym->nsyms; j++)
786 alocation[j] = &sym->symbols[j].symbol;
3af9a47b 787
046b007d 788 alocation[j] = NULL;
a95a4550 789
3af9a47b
NC		 790 return nsyms;
791}
792
aeefa1c9
TG		 793/* Create synthetic symbols for indirect symbols. */
794
b2b62060
TG		 795long
796bfd_mach_o_get_synthetic_symtab (bfd *abfd,
797 long symcount ATTRIBUTE_UNUSED,
798 asymbol **syms ATTRIBUTE_UNUSED,
799 long dynsymcount ATTRIBUTE_UNUSED,
800 asymbol **dynsyms ATTRIBUTE_UNUSED,
801 asymbol **ret)
802{
803 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
804 bfd_mach_o_dysymtab_command *dysymtab = mdata->dysymtab;
805 bfd_mach_o_symtab_command *symtab = mdata->symtab;
806 asymbol *s;
896ca098
NC		 807 char * s_start;
808 char * s_end;
b2b62060
TG		 809 unsigned long count, i, j, n;
810 size_t size;
811 char *names;
812 char *nul_name;
896ca098 813 const char stub [] = "$stub";
b2b62060
TG		 814
815 *ret = NULL;
816
aeefa1c9 817 /* Stop now if no symbols or no indirect symbols. */
896ca098
NC		 818 if (dysymtab == NULL || dysymtab->nindirectsyms == 0
819 || symtab == NULL || symtab->symbols == NULL)
b2b62060
TG		 820 return 0;
821
aeefa1c9
TG		 822 /* We need to allocate a bfd symbol for every indirect symbol and to
823 allocate the memory for its name. */
b2b62060
TG		 824 count = dysymtab->nindirectsyms;
825 size = count * sizeof (asymbol) + 1;
826
827 for (j = 0; j < count; j++)
828 {
896ca098 829 const char * strng;
b2b62060 830 unsigned int isym = dysymtab->indirect_syms[j];
aeefa1c9
TG		 831
832 /* Some indirect symbols are anonymous. */
896ca098
NC		 833 if (isym < symtab->nsyms && (strng = symtab->symbols[isym].symbol.name))
834 /* PR 17512: file: f5b8eeba. */
835 size += strnlen (strng, symtab->strsize - (strng - symtab->strtab)) + sizeof (stub);
b2b62060
TG		 836 }
837
896ca098
NC		 838 s_start = bfd_malloc (size);
839 s = *ret = (asymbol *) s_start;
b2b62060
TG		 840 if (s == NULL)
841 return -1;
842 names = (char *) (s + count);
843 nul_name = names;
844 *names++ = 0;
896ca098 845 s_end = s_start + size;
68ffbac6 846
b2b62060
TG		 847 n = 0;
848 for (i = 0; i < mdata->nsects; i++)
849 {
850 bfd_mach_o_section *sec = mdata->sections[i];
91d6fa6a 851 unsigned int first, last;
b2b62060
TG		 852 bfd_vma addr;
853 bfd_vma entry_size;
68ffbac6 854
b2b62060
TG		 855 switch (sec->flags & BFD_MACH_O_SECTION_TYPE_MASK)
856 {
857 case BFD_MACH_O_S_NON_LAZY_SYMBOL_POINTERS:
858 case BFD_MACH_O_S_LAZY_SYMBOL_POINTERS:
859 case BFD_MACH_O_S_SYMBOL_STUBS:
aeefa1c9 860 /* Only these sections have indirect symbols. */
b2b62060
TG		 861 first = sec->reserved1;
862 last = first + bfd_mach_o_section_get_nbr_indirect (abfd, sec);
863 addr = sec->addr;
864 entry_size = bfd_mach_o_section_get_entry_size (abfd, sec);
896ca098
NC		 865
866 /* PR 17512: file: 08e15eec. */
867 if (first >= count || last >= count || first > last)
868 goto fail;
869
b2b62060
TG		 870 for (j = first; j < last; j++)
871 {
872 unsigned int isym = dysymtab->indirect_syms[j];
873
896ca098
NC		 874 /* PR 17512: file: 04d64d9b. */
875 if (((char *) s) + sizeof (* s) > s_end)
876 goto fail;
877
b2b62060
TG		 878 s->flags = BSF_GLOBAL | BSF_SYNTHETIC;
879 s->section = sec->bfdsection;
880 s->value = addr - sec->addr;
881 s->udata.p = NULL;
68ffbac6 882
b2b62060
TG		 883 if (isym < symtab->nsyms
884 && symtab->symbols[isym].symbol.name)
885 {
886 const char *sym = symtab->symbols[isym].symbol.name;
887 size_t len;
888
889 s->name = names;
890 len = strlen (sym);
896ca098
NC		 891 /* PR 17512: file: 47dfd4d2. */
892 if (names + len >= s_end)
893 goto fail;
b2b62060
TG		 894 memcpy (names, sym, len);
895 names += len;
896ca098
NC		 896 /* PR 17512: file: 18f340a4. */
897 if (names + sizeof (stub) >= s_end)
898 goto fail;
899 memcpy (names, stub, sizeof (stub));
900 names += sizeof (stub);
b2b62060
TG		 901 }
902 else
903 s->name = nul_name;
904
905 addr += entry_size;
906 s++;
907 n++;
908 }
909 break;
910 default:
911 break;
912 }
913 }
914
915 return n;
896ca098
NC		 916
917 fail:
918 free (s_start);
919 * ret = NULL;
920 return -1;
b2b62060
TG		 921}
922
154a1ee5 923void
116c20d2
NC		 924bfd_mach_o_get_symbol_info (bfd *abfd ATTRIBUTE_UNUSED,
925 asymbol *symbol,
926 symbol_info *ret)
3af9a47b
NC		 927{
928 bfd_symbol_info (symbol, ret);
929}
930
154a1ee5 931void
116c20d2 932bfd_mach_o_print_symbol (bfd *abfd,
91d6fa6a 933 void * afile,
116c20d2
NC		 934 asymbol *symbol,
935 bfd_print_symbol_type how)
3af9a47b
NC		 936{
937 FILE *file = (FILE *) afile;
15e1c58a 938 const char *name;
92bc0e80 939 bfd_mach_o_asymbol *asym = (bfd_mach_o_asymbol *)symbol;
3af9a47b
NC		 940
941 switch (how)
942 {
943 case bfd_print_symbol_name:
944 fprintf (file, "%s", symbol->name);
945 break;
946 default:
91d6fa6a 947 bfd_print_symbol_vandf (abfd, (void *) file, symbol);
92bc0e80
TG		 948 if (asym->n_type & BFD_MACH_O_N_STAB)
949 name = bfd_get_stab_name (asym->n_type);
15e1c58a 950 else
92bc0e80 951 switch (asym->n_type & BFD_MACH_O_N_TYPE)
15e1c58a
TG		 952 {
953 case BFD_MACH_O_N_UNDF:
e0ce1005
TG		 954 if (symbol->value == 0)
955 name = "UND";
956 else
957 name = "COM";
15e1c58a
TG		 958 break;
959 case BFD_MACH_O_N_ABS:
960 name = "ABS";
961 break;
962 case BFD_MACH_O_N_INDR:
963 name = "INDR";
964 break;
965 case BFD_MACH_O_N_PBUD:
966 name = "PBUD";
967 break;
968 case BFD_MACH_O_N_SECT:
969 name = "SECT";
970 break;
971 default:
972 name = "???";
973 break;
974 }
975 if (name == NULL)
976 name = "";
92bc0e80
TG		 977 fprintf (file, " %02x %-6s %02x %04x",
978 asym->n_type, name, asym->n_sect, asym->n_desc);
979 if ((asym->n_type & BFD_MACH_O_N_STAB) == 0
980 && (asym->n_type & BFD_MACH_O_N_TYPE) == BFD_MACH_O_N_SECT)
e0ce1005 981 fprintf (file, " [%s]", symbol->section->name);
15e1c58a 982 fprintf (file, " %s", symbol->name);
3af9a47b
NC		 983 }
984}
985
986static void
116c20d2 987bfd_mach_o_convert_architecture (bfd_mach_o_cpu_type mtype,
0b2de107 988 bfd_mach_o_cpu_subtype msubtype,
116c20d2
NC		 989 enum bfd_architecture *type,
990 unsigned long *subtype)
3af9a47b
NC		 991{
992 *subtype = bfd_arch_unknown;
993
994 switch (mtype)
995 {
0b2de107
TG		 996 case BFD_MACH_O_CPU_TYPE_VAX:
997 *type = bfd_arch_vax;
998 break;
999 case BFD_MACH_O_CPU_TYPE_MC680x0:
1000 *type = bfd_arch_m68k;
1001 break;
1e8a024a
TG		 1002 case BFD_MACH_O_CPU_TYPE_I386:
1003 *type = bfd_arch_i386;
1004 *subtype = bfd_mach_i386_i386;
1005 break;
1006 case BFD_MACH_O_CPU_TYPE_X86_64:
1007 *type = bfd_arch_i386;
1008 *subtype = bfd_mach_x86_64;
1009 break;
0b2de107
TG		 1010 case BFD_MACH_O_CPU_TYPE_MIPS:
1011 *type = bfd_arch_mips;
1012 break;
1013 case BFD_MACH_O_CPU_TYPE_MC98000:
1014 *type = bfd_arch_m98k;
1015 break;
1016 case BFD_MACH_O_CPU_TYPE_HPPA:
1017 *type = bfd_arch_hppa;
1018 break;
1019 case BFD_MACH_O_CPU_TYPE_ARM:
1020 *type = bfd_arch_arm;
1021 switch (msubtype)
1022 {
1023 case BFD_MACH_O_CPU_SUBTYPE_ARM_V4T:
1024 *subtype = bfd_mach_arm_4T;
1025 break;
1026 case BFD_MACH_O_CPU_SUBTYPE_ARM_V6:
1027 *subtype = bfd_mach_arm_4T; /* Best fit ? */
1028 break;
1029 case BFD_MACH_O_CPU_SUBTYPE_ARM_V5TEJ:
1030 *subtype = bfd_mach_arm_5TE;
1031 break;
1032 case BFD_MACH_O_CPU_SUBTYPE_ARM_XSCALE:
1033 *subtype = bfd_mach_arm_XScale;
1034 break;
1035 case BFD_MACH_O_CPU_SUBTYPE_ARM_V7:
1036 *subtype = bfd_mach_arm_5TE; /* Best fit ? */
1037 break;
1038 case BFD_MACH_O_CPU_SUBTYPE_ARM_ALL:
1039 default:
1040 break;
1041 }
1042 break;
1043 case BFD_MACH_O_CPU_TYPE_MC88000:
1044 *type = bfd_arch_m88k;
1045 break;
1e8a024a
TG		 1046 case BFD_MACH_O_CPU_TYPE_SPARC:
1047 *type = bfd_arch_sparc;
1048 *subtype = bfd_mach_sparc;
1049 break;
0b2de107
TG		 1050 case BFD_MACH_O_CPU_TYPE_I860:
1051 *type = bfd_arch_i860;
1052 break;
1053 case BFD_MACH_O_CPU_TYPE_ALPHA:
1054 *type = bfd_arch_alpha;
1055 break;
1e8a024a
TG		 1056 case BFD_MACH_O_CPU_TYPE_POWERPC:
1057 *type = bfd_arch_powerpc;
c2f09c75 1058 *subtype = bfd_mach_ppc;
1e8a024a
TG		 1059 break;
1060 case BFD_MACH_O_CPU_TYPE_POWERPC_64:
1061 *type = bfd_arch_powerpc;
c2f09c75 1062 *subtype = bfd_mach_ppc64;
1e8a024a 1063 break;
d8028530
TG		 1064 case BFD_MACH_O_CPU_TYPE_ARM64:
1065 *type = bfd_arch_aarch64;
1066 *subtype = bfd_mach_aarch64;
1067 break;
3af9a47b 1068 default:
1e8a024a
TG		 1069 *type = bfd_arch_unknown;
1070 break;
3af9a47b
NC		 1071 }
1072}
a95a4550 1073
c9ffd2ea
TG		 1074/* Write n NUL bytes to ABFD so that LEN + n is a multiple of 4. Return the
1075 number of bytes written or -1 in case of error. */
1076
1077static int
1078bfd_mach_o_pad4 (bfd *abfd, unsigned int len)
1079{
1080 if (len % 4 != 0)
1081 {
1082 char pad[4] = {0,0,0,0};
1083 unsigned int padlen = 4 - (len % 4);
1084
1085 if (bfd_bwrite (pad, padlen, abfd) != padlen)
1086 return -1;
1087
1088 return padlen;
1089 }
1090 else
1091 return 0;
1092}
1093
1094/* Likewise, but for a command. */
1095
1096static int
1097bfd_mach_o_pad_command (bfd *abfd, unsigned int len)
1098{
1099 unsigned int align = bfd_mach_o_wide_p (abfd) ? 8 : 4;
1100
1101 if (len % align != 0)
1102 {
1103 char pad[8] = {0};
1104 unsigned int padlen = align - (len % align);
1105
1106 if (bfd_bwrite (pad, padlen, abfd) != padlen)
1107 return -1;
1108
1109 return padlen;
1110 }
1111 else
1112 return 0;
1113}
1114
154a1ee5 1115static bfd_boolean
116c20d2
NC		 1116bfd_mach_o_write_header (bfd *abfd, bfd_mach_o_header *header)
1117{
46d1c23b 1118 struct mach_o_header_external raw;
1e8a024a
TG		 1119 unsigned int size;
1120
c2f09c75 1121 size = mach_o_wide_p (header) ?
154a1ee5 1122 BFD_MACH_O_HEADER_64_SIZE : BFD_MACH_O_HEADER_SIZE;
116c20d2 1123
46d1c23b
TG		 1124 bfd_h_put_32 (abfd, header->magic, raw.magic);
1125 bfd_h_put_32 (abfd, header->cputype, raw.cputype);
1126 bfd_h_put_32 (abfd, header->cpusubtype, raw.cpusubtype);
1127 bfd_h_put_32 (abfd, header->filetype, raw.filetype);
1128 bfd_h_put_32 (abfd, header->ncmds, raw.ncmds);
1129 bfd_h_put_32 (abfd, header->sizeofcmds, raw.sizeofcmds);
1130 bfd_h_put_32 (abfd, header->flags, raw.flags);
116c20d2 1131
c2f09c75 1132 if (mach_o_wide_p (header))
46d1c23b 1133 bfd_h_put_32 (abfd, header->reserved, raw.reserved);
1e8a024a 1134
c2f09c75 1135 if (bfd_seek (abfd, 0, SEEK_SET) != 0
46d1c23b 1136 || bfd_bwrite (&raw, size, abfd) != size)
154a1ee5 1137 return FALSE;
116c20d2 1138
154a1ee5 1139 return TRUE;
116c20d2
NC		 1140}
1141
452216ab 1142static bfd_boolean
ab273af8 1143bfd_mach_o_write_thread (bfd *abfd, bfd_mach_o_load_command *command)
116c20d2
NC		 1144{
1145 bfd_mach_o_thread_command *cmd = &command->command.thread;
1146 unsigned int i;
46d1c23b 1147 struct mach_o_thread_command_external raw;
92bc0e80 1148 unsigned int offset;
116c20d2
NC		 1149
1150 BFD_ASSERT ((command->type == BFD_MACH_O_LC_THREAD)
1151 || (command->type == BFD_MACH_O_LC_UNIXTHREAD));
1152
c9ffd2ea 1153 offset = BFD_MACH_O_LC_SIZE;
116c20d2
NC		 1154 for (i = 0; i < cmd->nflavours; i++)
1155 {
1156 BFD_ASSERT ((cmd->flavours[i].size % 4) == 0);
46d1c23b
TG		 1157 BFD_ASSERT (cmd->flavours[i].offset ==
1158 (command->offset + offset + BFD_MACH_O_LC_SIZE));
116c20d2 1159
46d1c23b
TG		 1160 bfd_h_put_32 (abfd, cmd->flavours[i].flavour, raw.flavour);
1161 bfd_h_put_32 (abfd, (cmd->flavours[i].size / 4), raw.count);
116c20d2 1162
c2f09c75 1163 if (bfd_seek (abfd, command->offset + offset, SEEK_SET) != 0
46d1c23b 1164 || bfd_bwrite (&raw, sizeof (raw), abfd) != sizeof (raw))
452216ab 1165 return FALSE;
116c20d2 1166
46d1c23b 1167 offset += cmd->flavours[i].size + sizeof (raw);
116c20d2
NC		 1168 }
1169
452216ab 1170 return TRUE;
116c20d2
NC		 1171}
1172
c9ffd2ea
TG		 1173static bfd_boolean
1174bfd_mach_o_write_dylinker (bfd *abfd, bfd_mach_o_load_command *command)
1175{
1176 bfd_mach_o_dylinker_command *cmd = &command->command.dylinker;
1177 struct mach_o_str_command_external raw;
1178 unsigned int namelen;
1179
1180 bfd_h_put_32 (abfd, cmd->name_offset, raw.str);
1181
1182 if (bfd_seek (abfd, command->offset + BFD_MACH_O_LC_SIZE, SEEK_SET) != 0
1183 || bfd_bwrite (&raw, sizeof (raw), abfd) != sizeof (raw))
1184 return FALSE;
1185
1186 namelen = strlen (cmd->name_str) + 1;
1187 if (bfd_bwrite (cmd->name_str, namelen, abfd) != namelen)
1188 return FALSE;
1189
1190 if (bfd_mach_o_pad_command (abfd, namelen) < 0)
1191 return FALSE;
1192
1193 return TRUE;
1194}
1195
1196static bfd_boolean
1197bfd_mach_o_write_dylib (bfd *abfd, bfd_mach_o_load_command *command)
1198{
1199 bfd_mach_o_dylib_command *cmd = &command->command.dylib;
1200 struct mach_o_dylib_command_external raw;
1201 unsigned int namelen;
1202
1203 bfd_h_put_32 (abfd, cmd->name_offset, raw.name);
1204 bfd_h_put_32 (abfd, cmd->timestamp, raw.timestamp);
1205 bfd_h_put_32 (abfd, cmd->current_version, raw.current_version);
1206 bfd_h_put_32 (abfd, cmd->compatibility_version, raw.compatibility_version);
1207
1208 if (bfd_seek (abfd, command->offset + BFD_MACH_O_LC_SIZE, SEEK_SET) != 0
1209 || bfd_bwrite (&raw, sizeof (raw), abfd) != sizeof (raw))
1210 return FALSE;
1211
1212 namelen = strlen (cmd->name_str) + 1;
1213 if (bfd_bwrite (cmd->name_str, namelen, abfd) != namelen)
1214 return FALSE;
1215
1216 if (bfd_mach_o_pad_command (abfd, namelen) < 0)
1217 return FALSE;
1218
1219 return TRUE;
1220}
1221
1222static bfd_boolean
1223bfd_mach_o_write_main (bfd *abfd, bfd_mach_o_load_command *command)
1224{
1225 bfd_mach_o_main_command *cmd = &command->command.main;
1226 struct mach_o_entry_point_command_external raw;
1227
1228 bfd_h_put_64 (abfd, cmd->entryoff, raw.entryoff);
1229 bfd_h_put_64 (abfd, cmd->stacksize, raw.stacksize);
1230
1231 if (bfd_seek (abfd, command->offset + BFD_MACH_O_LC_SIZE, SEEK_SET) != 0
1232 || bfd_bwrite (&raw, sizeof (raw), abfd) != sizeof (raw))
1233 return FALSE;
1234
1235 return TRUE;
1236}
1237
1238static bfd_boolean
1239bfd_mach_o_write_dyld_info (bfd *abfd, bfd_mach_o_load_command *command)
1240{
1241 bfd_mach_o_dyld_info_command *cmd = &command->command.dyld_info;
1242 struct mach_o_dyld_info_command_external raw;
1243
1244 bfd_h_put_32 (abfd, cmd->rebase_off, raw.rebase_off);
1245 bfd_h_put_32 (abfd, cmd->rebase_size, raw.rebase_size);
1246 bfd_h_put_32 (abfd, cmd->bind_off, raw.bind_off);
1247 bfd_h_put_32 (abfd, cmd->bind_size, raw.bind_size);
1248 bfd_h_put_32 (abfd, cmd->weak_bind_off, raw.weak_bind_off);
1249 bfd_h_put_32 (abfd, cmd->weak_bind_size, raw.weak_bind_size);
1250 bfd_h_put_32 (abfd, cmd->lazy_bind_off, raw.lazy_bind_off);
1251 bfd_h_put_32 (abfd, cmd->lazy_bind_size, raw.lazy_bind_size);
1252 bfd_h_put_32 (abfd, cmd->export_off, raw.export_off);
1253 bfd_h_put_32 (abfd, cmd->export_size, raw.export_size);
1254
1255 if (bfd_seek (abfd, command->offset + BFD_MACH_O_LC_SIZE, SEEK_SET) != 0
1256 || bfd_bwrite (&raw, sizeof (raw), abfd) != sizeof (raw))
1257 return FALSE;
1258
1259 if (cmd->rebase_size != 0)
1260 if (bfd_seek (abfd, cmd->rebase_off, SEEK_SET) != 0
1261 || (bfd_bwrite (cmd->rebase_content, cmd->rebase_size, abfd) !=
1262 cmd->rebase_size))
1263 return FALSE;
1264
1265 if (cmd->bind_size != 0)
1266 if (bfd_seek (abfd, cmd->bind_off, SEEK_SET) != 0
1267 || (bfd_bwrite (cmd->bind_content, cmd->bind_size, abfd) !=
1268 cmd->bind_size))
1269 return FALSE;
1270
1271 if (cmd->weak_bind_size != 0)
1272 if (bfd_seek (abfd, cmd->weak_bind_off, SEEK_SET) != 0
1273 || (bfd_bwrite (cmd->weak_bind_content, cmd->weak_bind_size, abfd) !=
1274 cmd->weak_bind_size))
1275 return FALSE;
1276
1277 if (cmd->lazy_bind_size != 0)
1278 if (bfd_seek (abfd, cmd->lazy_bind_off, SEEK_SET) != 0
1279 || (bfd_bwrite (cmd->lazy_bind_content, cmd->lazy_bind_size, abfd) !=
1280 cmd->lazy_bind_size))
1281 return FALSE;
1282
1283 if (cmd->export_size != 0)
1284 if (bfd_seek (abfd, cmd->export_off, SEEK_SET) != 0
1285 || (bfd_bwrite (cmd->export_content, cmd->export_size, abfd) !=
1286 cmd->export_size))
1287 return FALSE;
1288
1289 return TRUE;
1290}
1291
92bc0e80
TG		 1292long
1293bfd_mach_o_get_reloc_upper_bound (bfd *abfd ATTRIBUTE_UNUSED,
1294 asection *asect)
1295{
1296 return (asect->reloc_count + 1) * sizeof (arelent *);
1297}
1298
19765f52
IS		 1299/* In addition to the need to byte-swap the symbol number, the bit positions
1300 of the fields in the relocation information vary per target endian-ness. */
1301
1302static void
1303bfd_mach_o_swap_in_non_scattered_reloc (bfd *abfd, bfd_mach_o_reloc_info *rel,
1304 unsigned char *fields)
1305{
1306 unsigned char info = fields[3];
1307
1308 if (bfd_big_endian (abfd))
1309 {
1310 rel->r_value = (fields[0] << 16) | (fields[1] << 8) | fields[2];
1311 rel->r_type = (info >> BFD_MACH_O_BE_TYPE_SHIFT) & BFD_MACH_O_TYPE_MASK;
1312 rel->r_pcrel = (info & BFD_MACH_O_BE_PCREL) ? 1 : 0;
68ffbac6 1313 rel->r_length = (info >> BFD_MACH_O_BE_LENGTH_SHIFT)
19765f52
IS		 1314 & BFD_MACH_O_LENGTH_MASK;
1315 rel->r_extern = (info & BFD_MACH_O_BE_EXTERN) ? 1 : 0;
1316 }
1317 else
1318 {
1319 rel->r_value = (fields[2] << 16) | (fields[1] << 8) | fields[0];
1320 rel->r_type = (info >> BFD_MACH_O_LE_TYPE_SHIFT) & BFD_MACH_O_TYPE_MASK;
1321 rel->r_pcrel = (info & BFD_MACH_O_LE_PCREL) ? 1 : 0;
68ffbac6 1322 rel->r_length = (info >> BFD_MACH_O_LE_LENGTH_SHIFT)
19765f52
IS		 1323 & BFD_MACH_O_LENGTH_MASK;
1324 rel->r_extern = (info & BFD_MACH_O_LE_EXTERN) ? 1 : 0;
1325 }
1326}
1327
b32e07d7 1328static int
46d1c23b
TG		 1329bfd_mach_o_canonicalize_one_reloc (bfd *abfd,
1330 struct mach_o_reloc_info_external *raw,
b32e07d7 1331 arelent *res, asymbol **syms)
92bc0e80 1332{
046b007d 1333 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
92bc0e80 1334 bfd_mach_o_backend_data *bed = bfd_mach_o_get_backend_data (abfd);
b32e07d7
TG		 1335 bfd_mach_o_reloc_info reloc;
1336 bfd_vma addr;
b32e07d7
TG		 1337 asymbol **sym;
1338
46d1c23b 1339 addr = bfd_get_32 (abfd, raw->r_address);
19765f52
IS		 1340 res->sym_ptr_ptr = NULL;
1341 res->addend = 0;
f4716ee2 1342
b32e07d7
TG		 1343 if (addr & BFD_MACH_O_SR_SCATTERED)
1344 {
1345 unsigned int j;
19765f52 1346 bfd_vma symnum = bfd_get_32 (abfd, raw->r_symbolnum);
b32e07d7 1347
19765f52
IS		 1348 /* Scattered relocation, can't be extern. */
1349 reloc.r_scattered = 1;
1350 reloc.r_extern = 0;
1351
1352 /* Extract section and offset from r_value (symnum). */
1353 reloc.r_value = symnum;
1354 /* FIXME: This breaks when a symbol in a reloc exactly follows the
1355 end of the data for the section (e.g. in a calculation of section
1356 data length). At present, the symbol will end up associated with
1357 the following section or, if it falls within alignment padding, as
1358 null - which will assert later. */
b32e07d7
TG		 1359 for (j = 0; j < mdata->nsects; j++)
1360 {
1361 bfd_mach_o_section *sect = mdata->sections[j];
1362 if (symnum >= sect->addr && symnum < sect->addr + sect->size)
1363 {
1364 res->sym_ptr_ptr = sect->bfdsection->symbol_ptr_ptr;
1365 res->addend = symnum - sect->addr;
1366 break;
1367 }
1368 }
19765f52
IS		 1369
1370 /* Extract the info and address fields from r_address. */
b32e07d7
TG		 1371 reloc.r_type = BFD_MACH_O_GET_SR_TYPE (addr);
1372 reloc.r_length = BFD_MACH_O_GET_SR_LENGTH (addr);
1373 reloc.r_pcrel = addr & BFD_MACH_O_SR_PCREL;
19765f52
IS		 1374 reloc.r_address = BFD_MACH_O_GET_SR_TYPE (addr);
1375 res->address = BFD_MACH_O_GET_SR_ADDRESS (addr);
b32e07d7
TG		 1376 }
1377 else
1378 {
19765f52 1379 unsigned int num;
f4716ee2 1380
19765f52
IS		 1381 /* Non-scattered relocation. */
1382 reloc.r_scattered = 0;
f4716ee2 1383
19765f52
IS		 1384 /* The value and info fields have to be extracted dependent on target
1385 endian-ness. */
1386 bfd_mach_o_swap_in_non_scattered_reloc (abfd, &reloc, raw->r_symbolnum);
1387 num = reloc.r_value;
1388
1389 if (reloc.r_extern)
f4716ee2 1390 {
a1165289 1391 /* PR 17512: file: 8396-1185-0.004. */
64d29018 1392 if (num >= bfd_mach_o_count_symbols (abfd))
a1165289 1393 sym = bfd_und_section_ptr->symbol_ptr_ptr;
5860e3f8
NC		 1394 else if (syms == NULL)
1395 sym = bfd_und_section_ptr->symbol_ptr_ptr;
a1165289
NC		 1396 else
1397 /* An external symbol number. */
1398 sym = syms + num;
f4716ee2 1399 }
23d72939 1400 else if (num == 0x00ffffff || num == 0)
f4716ee2
TG		 1401 {
1402 /* The 'symnum' in a non-scattered PAIR is 0x00ffffff. But as this
1403 is generic code, we don't know wether this is really a PAIR.
1404 This value is almost certainly not a valid section number, hence
1405 this specific case to avoid an assertion failure.
1406 Target specific swap_reloc_in routine should adjust that. */
1407 sym = bfd_abs_section_ptr->symbol_ptr_ptr;
1408 }
1409 else
b32e07d7 1410 {
0a9d414a 1411 /* PR 17512: file: 006-2964-0.004. */
033539e2 1412 if (num > mdata->nsects)
0a9d414a
NC		 1413 return -1;
1414
f4716ee2 1415 /* A section number. */
b32e07d7 1416 sym = mdata->sections[num - 1]->bfdsection->symbol_ptr_ptr;
1523fa24
TG		 1417 /* For a symbol defined in section S, the addend (stored in the
1418 binary) contains the address of the section. To comply with
19765f52 1419 bfd convention, subtract the section address.
1523fa24
TG		 1420 Use the address from the header, so that the user can modify
1421 the vma of the section. */
1422 res->addend = -mdata->sections[num - 1]->addr;
19765f52 1423 }
f4716ee2
TG		 1424 /* Note: Pairs for PPC LO/HI/HA are not scattered, but contain the offset
1425 in the lower 16bits of the address value. So we have to find the
1426 'symbol' from the preceding reloc. We do this even though the
1427 section symbol is probably not needed here, because NULL symbol
1428 values cause an assert in generic BFD code. This must be done in
1429 the PPC swap_reloc_in routine. */
b32e07d7 1430 res->sym_ptr_ptr = sym;
f4716ee2 1431
19765f52
IS		 1432 /* The 'address' is just r_address.
1433 ??? maybe this should be masked with 0xffffff for safety. */
1434 res->address = addr;
1435 reloc.r_address = addr;
b32e07d7 1436 }
f4716ee2
TG		 1437
1438 /* We have set up a reloc with all the information present, so the swapper
1439 can modify address, value and addend fields, if necessary, to convey
1440 information in the generic BFD reloc that is mach-o specific. */
19765f52 1441
b32e07d7
TG		 1442 if (!(*bed->_bfd_mach_o_swap_reloc_in)(res, &reloc))
1443 return -1;
033539e2 1444
b32e07d7
TG		 1445 return 0;
1446}
1447
1448static int
1449bfd_mach_o_canonicalize_relocs (bfd *abfd, unsigned long filepos,
1450 unsigned long count,
1451 arelent *res, asymbol **syms)
1452{
92bc0e80 1453 unsigned long i;
46d1c23b 1454 struct mach_o_reloc_info_external *native_relocs;
92bc0e80
TG		 1455 bfd_size_type native_size;
1456
92bc0e80 1457 /* Allocate and read relocs. */
b32e07d7 1458 native_size = count * BFD_MACH_O_RELENT_SIZE;
033539e2 1459
64d29018
NC		 1460 /* PR 17512: file: 09477b57. */
1461 if (native_size < count)
1462 return -1;
1463
46d1c23b
TG		 1464 native_relocs =
1465 (struct mach_o_reloc_info_external *) bfd_malloc (native_size);
92bc0e80
TG		 1466 if (native_relocs == NULL)
1467 return -1;
1468
b32e07d7 1469 if (bfd_seek (abfd, filepos, SEEK_SET) != 0
92bc0e80 1470 || bfd_bread (native_relocs, native_size, abfd) != native_size)
b32e07d7
TG		 1471 goto err;
1472
1473 for (i = 0; i < count; i++)
92bc0e80 1474 {
46d1c23b
TG		 1475 if (bfd_mach_o_canonicalize_one_reloc (abfd, &native_relocs[i],
1476 &res[i], syms) < 0)
b32e07d7 1477 goto err;
92bc0e80 1478 }
b32e07d7
TG		 1479 free (native_relocs);
1480 return i;
1481 err:
1482 free (native_relocs);
1483 return -1;
1484}
1485
1486long
1487bfd_mach_o_canonicalize_reloc (bfd *abfd, asection *asect,
1488 arelent **rels, asymbol **syms)
1489{
1490 bfd_mach_o_backend_data *bed = bfd_mach_o_get_backend_data (abfd);
1491 unsigned long i;
1492 arelent *res;
1493
1494 if (asect->reloc_count == 0)
1495 return 0;
1496
1497 /* No need to go further if we don't know how to read relocs. */
1498 if (bed->_bfd_mach_o_swap_reloc_in == NULL)
1499 return 0;
92bc0e80 1500
dff55db0 1501 if (asect->relocation == NULL)
92bc0e80 1502 {
64d29018
NC		 1503 if (asect->reloc_count * sizeof (arelent) < asect->reloc_count)
1504 return -1;
dff55db0
TG		 1505 res = bfd_malloc (asect->reloc_count * sizeof (arelent));
1506 if (res == NULL)
1507 return -1;
1508
1509 if (bfd_mach_o_canonicalize_relocs (abfd, asect->rel_filepos,
1510 asect->reloc_count, res, syms) < 0)
1511 {
1512 free (res);
1513 return -1;
1514 }
1515 asect->relocation = res;
92bc0e80
TG		 1516 }
1517
dff55db0 1518 res = asect->relocation;
92bc0e80 1519 for (i = 0; i < asect->reloc_count; i++)
b32e07d7
TG		 1520 rels[i] = &res[i];
1521 rels[i] = NULL;
92bc0e80 1522
b32e07d7
TG		 1523 return i;
1524}
92bc0e80 1525
b32e07d7
TG		 1526long
1527bfd_mach_o_get_dynamic_reloc_upper_bound (bfd *abfd)
1528{
1529 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
92bc0e80 1530
b32e07d7
TG		 1531 if (mdata->dysymtab == NULL)
1532 return 1;
dff55db0 1533 return (mdata->dysymtab->nextrel + mdata->dysymtab->nlocrel + 1)
b32e07d7
TG		 1534 * sizeof (arelent *);
1535}
92bc0e80 1536
b32e07d7
TG		 1537long
1538bfd_mach_o_canonicalize_dynamic_reloc (bfd *abfd, arelent **rels,
1539 struct bfd_symbol **syms)
1540{
1541 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
1542 bfd_mach_o_dysymtab_command *dysymtab = mdata->dysymtab;
1543 bfd_mach_o_backend_data *bed = bfd_mach_o_get_backend_data (abfd);
1544 unsigned long i;
1545 arelent *res;
1546
1547 if (dysymtab == NULL)
1548 return 0;
1549 if (dysymtab->nextrel == 0 && dysymtab->nlocrel == 0)
1550 return 0;
1551
1552 /* No need to go further if we don't know how to read relocs. */
1553 if (bed->_bfd_mach_o_swap_reloc_in == NULL)
1554 return 0;
1555
dff55db0 1556 if (mdata->dyn_reloc_cache == NULL)
b32e07d7 1557 {
64d29018
NC		 1558 if ((dysymtab->nextrel + dysymtab->nlocrel) * sizeof (arelent)
1559 < (dysymtab->nextrel + dysymtab->nlocrel))
1560 return -1;
1561
dff55db0
TG		 1562 res = bfd_malloc ((dysymtab->nextrel + dysymtab->nlocrel)
1563 * sizeof (arelent));
1564 if (res == NULL)
1565 return -1;
b32e07d7 1566
dff55db0
TG		 1567 if (bfd_mach_o_canonicalize_relocs (abfd, dysymtab->extreloff,
1568 dysymtab->nextrel, res, syms) < 0)
1569 {
1570 free (res);
1571 return -1;
1572 }
1573
1574 if (bfd_mach_o_canonicalize_relocs (abfd, dysymtab->locreloff,
1575 dysymtab->nlocrel,
1576 res + dysymtab->nextrel, syms) < 0)
1577 {
1578 free (res);
1579 return -1;
1580 }
1581
1582 mdata->dyn_reloc_cache = res;
b32e07d7
TG		 1583 }
1584
dff55db0 1585 res = mdata->dyn_reloc_cache;
b32e07d7
TG		 1586 for (i = 0; i < dysymtab->nextrel + dysymtab->nlocrel; i++)
1587 rels[i] = &res[i];
1588 rels[i] = NULL;
92bc0e80
TG		 1589 return i;
1590}
1591
19765f52
IS		 1592/* In addition to the need to byte-swap the symbol number, the bit positions
1593 of the fields in the relocation information vary per target endian-ness. */
1594
1595static void
1596bfd_mach_o_swap_out_non_scattered_reloc (bfd *abfd, unsigned char *fields,
1597 bfd_mach_o_reloc_info *rel)
1598{
1599 unsigned char info = 0;
1600
1601 BFD_ASSERT (rel->r_type <= 15);
1602 BFD_ASSERT (rel->r_length <= 3);
1603
1604 if (bfd_big_endian (abfd))
1605 {
1606 fields[0] = (rel->r_value >> 16) & 0xff;
1607 fields[1] = (rel->r_value >> 8) & 0xff;
1608 fields[2] = rel->r_value & 0xff;
1609 info |= rel->r_type << BFD_MACH_O_BE_TYPE_SHIFT;
1610 info |= rel->r_pcrel ? BFD_MACH_O_BE_PCREL : 0;
1611 info |= rel->r_length << BFD_MACH_O_BE_LENGTH_SHIFT;
1612 info |= rel->r_extern ? BFD_MACH_O_BE_EXTERN : 0;
1613 }
1614 else
1615 {
1616 fields[2] = (rel->r_value >> 16) & 0xff;
1617 fields[1] = (rel->r_value >> 8) & 0xff;
1618 fields[0] = rel->r_value & 0xff;
1619 info |= rel->r_type << BFD_MACH_O_LE_TYPE_SHIFT;
1620 info |= rel->r_pcrel ? BFD_MACH_O_LE_PCREL : 0;
1621 info |= rel->r_length << BFD_MACH_O_LE_LENGTH_SHIFT;
1622 info |= rel->r_extern ? BFD_MACH_O_LE_EXTERN : 0;
1623 }
1624 fields[3] = info;
1625}
1626
92bc0e80 1627static bfd_boolean
ab273af8 1628bfd_mach_o_write_relocs (bfd *abfd, bfd_mach_o_section *section)
92bc0e80 1629{
92bc0e80
TG		 1630 unsigned int i;
1631 arelent **entries;
1632 asection *sec;
1633 bfd_mach_o_backend_data *bed = bfd_mach_o_get_backend_data (abfd);
1634
1635 sec = section->bfdsection;
1636 if (sec->reloc_count == 0)
1637 return TRUE;
1638
1639 if (bed->_bfd_mach_o_swap_reloc_out == NULL)
1640 return TRUE;
1641
92bc0e80
TG		 1642 if (bfd_seek (abfd, section->reloff, SEEK_SET) != 0)
1643 return FALSE;
1644
1645 /* Convert and write. */
1646 entries = section->bfdsection->orelocation;
1647 for (i = 0; i < section->nreloc; i++)
1648 {
1649 arelent *rel = entries[i];
46d1c23b 1650 struct mach_o_reloc_info_external raw;
92bc0e80
TG		 1651 bfd_mach_o_reloc_info info, *pinfo = &info;
1652
1653 /* Convert relocation to an intermediate representation. */
1654 if (!(*bed->_bfd_mach_o_swap_reloc_out) (rel, pinfo))
1655 return FALSE;
1656
1657 /* Lower the relocation info. */
1658 if (pinfo->r_scattered)
1659 {
1660 unsigned long v;
1661
1662 v = BFD_MACH_O_SR_SCATTERED
1663 | (pinfo->r_pcrel ? BFD_MACH_O_SR_PCREL : 0)
ca148c5a
TG		 1664 | BFD_MACH_O_SET_SR_LENGTH (pinfo->r_length)
1665 | BFD_MACH_O_SET_SR_TYPE (pinfo->r_type)
1666 | BFD_MACH_O_SET_SR_ADDRESS (pinfo->r_address);
46d1c23b
TG		 1667 /* Note: scattered relocs have field in reverse order... */
1668 bfd_put_32 (abfd, v, raw.r_address);
1669 bfd_put_32 (abfd, pinfo->r_value, raw.r_symbolnum);
92bc0e80
TG		 1670 }
1671 else
1672 {
46d1c23b 1673 bfd_put_32 (abfd, pinfo->r_address, raw.r_address);
19765f52
IS		 1674 bfd_mach_o_swap_out_non_scattered_reloc (abfd, raw.r_symbolnum,
1675 pinfo);
92bc0e80
TG		 1676 }
1677
46d1c23b 1678 if (bfd_bwrite (&raw, BFD_MACH_O_RELENT_SIZE, abfd)
92bc0e80
TG		 1679 != BFD_MACH_O_RELENT_SIZE)
1680 return FALSE;
1681 }
1682 return TRUE;
1683}
1684
452216ab 1685static bfd_boolean
ab273af8 1686bfd_mach_o_write_section_32 (bfd *abfd, bfd_mach_o_section *section)
116c20d2 1687{
46d1c23b
TG		 1688 struct mach_o_section_32_external raw;
1689
1690 memcpy (raw.sectname, section->sectname, 16);
72b5104c 1691 memcpy (raw.segname, section->segname, 16);
46d1c23b
TG		 1692 bfd_h_put_32 (abfd, section->addr, raw.addr);
1693 bfd_h_put_32 (abfd, section->size, raw.size);
1694 bfd_h_put_32 (abfd, section->offset, raw.offset);
1695 bfd_h_put_32 (abfd, section->align, raw.align);
1696 bfd_h_put_32 (abfd, section->reloff, raw.reloff);
1697 bfd_h_put_32 (abfd, section->nreloc, raw.nreloc);
1698 bfd_h_put_32 (abfd, section->flags, raw.flags);
1699 bfd_h_put_32 (abfd, section->reserved1, raw.reserved1);
1700 bfd_h_put_32 (abfd, section->reserved2, raw.reserved2);
1701
1702 if (bfd_bwrite (&raw, BFD_MACH_O_SECTION_SIZE, abfd)
92bc0e80 1703 != BFD_MACH_O_SECTION_SIZE)
452216ab 1704 return FALSE;
116c20d2 1705
452216ab 1706 return TRUE;
116c20d2
NC		 1707}
1708
452216ab 1709static bfd_boolean
ab273af8 1710bfd_mach_o_write_section_64 (bfd *abfd, bfd_mach_o_section *section)
116c20d2 1711{
46d1c23b
TG		 1712 struct mach_o_section_64_external raw;
1713
1714 memcpy (raw.sectname, section->sectname, 16);
1715 memcpy (raw.segname, section->segname, 16);
1716 bfd_h_put_64 (abfd, section->addr, raw.addr);
1717 bfd_h_put_64 (abfd, section->size, raw.size);
1718 bfd_h_put_32 (abfd, section->offset, raw.offset);
1719 bfd_h_put_32 (abfd, section->align, raw.align);
1720 bfd_h_put_32 (abfd, section->reloff, raw.reloff);
1721 bfd_h_put_32 (abfd, section->nreloc, raw.nreloc);
1722 bfd_h_put_32 (abfd, section->flags, raw.flags);
1723 bfd_h_put_32 (abfd, section->reserved1, raw.reserved1);
1724 bfd_h_put_32 (abfd, section->reserved2, raw.reserved2);
1725 bfd_h_put_32 (abfd, section->reserved3, raw.reserved3);
1726
1727 if (bfd_bwrite (&raw, BFD_MACH_O_SECTION_64_SIZE, abfd)
92bc0e80 1728 != BFD_MACH_O_SECTION_64_SIZE)
452216ab 1729 return FALSE;
116c20d2 1730
452216ab 1731 return TRUE;
1e8a024a
TG		 1732}
1733
452216ab 1734static bfd_boolean
ab273af8 1735bfd_mach_o_write_segment_32 (bfd *abfd, bfd_mach_o_load_command *command)
1e8a024a 1736{
46d1c23b 1737 struct mach_o_segment_command_32_external raw;
1e8a024a 1738 bfd_mach_o_segment_command *seg = &command->command.segment;
f1bde64c 1739 bfd_mach_o_section *sec;
1e8a024a 1740
c2f09c75
TG		 1741 BFD_ASSERT (command->type == BFD_MACH_O_LC_SEGMENT);
1742
f1bde64c
TG		 1743 for (sec = seg->sect_head; sec != NULL; sec = sec->next)
1744 if (!bfd_mach_o_write_relocs (abfd, sec))
452216ab 1745 return FALSE;
c2f09c75 1746
46d1c23b
TG		 1747 memcpy (raw.segname, seg->segname, 16);
1748 bfd_h_put_32 (abfd, seg->vmaddr, raw.vmaddr);
1749 bfd_h_put_32 (abfd, seg->vmsize, raw.vmsize);
1750 bfd_h_put_32 (abfd, seg->fileoff, raw.fileoff);
1751 bfd_h_put_32 (abfd, seg->filesize, raw.filesize);
1752 bfd_h_put_32 (abfd, seg->maxprot, raw.maxprot);
1753 bfd_h_put_32 (abfd, seg->initprot, raw.initprot);
1754 bfd_h_put_32 (abfd, seg->nsects, raw.nsects);
1755 bfd_h_put_32 (abfd, seg->flags, raw.flags);
68ffbac6 1756
46d1c23b
TG		 1757 if (bfd_seek (abfd, command->offset + BFD_MACH_O_LC_SIZE, SEEK_SET) != 0
1758 || bfd_bwrite (&raw, sizeof (raw), abfd) != sizeof (raw))
452216ab 1759 return FALSE;
1e8a024a 1760
f1bde64c 1761 for (sec = seg->sect_head; sec != NULL; sec = sec->next)
452216ab
TG		 1762 if (!bfd_mach_o_write_section_32 (abfd, sec))
1763 return FALSE;
1e8a024a 1764
452216ab 1765 return TRUE;
116c20d2
NC		 1766}
1767
452216ab 1768static bfd_boolean
ab273af8 1769bfd_mach_o_write_segment_64 (bfd *abfd, bfd_mach_o_load_command *command)
1e8a024a 1770{
46d1c23b 1771 struct mach_o_segment_command_64_external raw;
c2f09c75 1772 bfd_mach_o_segment_command *seg = &command->command.segment;
f1bde64c 1773 bfd_mach_o_section *sec;
c2f09c75
TG		 1774
1775 BFD_ASSERT (command->type == BFD_MACH_O_LC_SEGMENT_64);
1776
f1bde64c
TG		 1777 for (sec = seg->sect_head; sec != NULL; sec = sec->next)
1778 if (!bfd_mach_o_write_relocs (abfd, sec))
452216ab 1779 return FALSE;
c2f09c75 1780
46d1c23b
TG		 1781 memcpy (raw.segname, seg->segname, 16);
1782 bfd_h_put_64 (abfd, seg->vmaddr, raw.vmaddr);
1783 bfd_h_put_64 (abfd, seg->vmsize, raw.vmsize);
1784 bfd_h_put_64 (abfd, seg->fileoff, raw.fileoff);
1785 bfd_h_put_64 (abfd, seg->filesize, raw.filesize);
1786 bfd_h_put_32 (abfd, seg->maxprot, raw.maxprot);
1787 bfd_h_put_32 (abfd, seg->initprot, raw.initprot);
1788 bfd_h_put_32 (abfd, seg->nsects, raw.nsects);
1789 bfd_h_put_32 (abfd, seg->flags, raw.flags);
1790
1791 if (bfd_seek (abfd, command->offset + BFD_MACH_O_LC_SIZE, SEEK_SET) != 0
1792 || bfd_bwrite (&raw, sizeof (raw), abfd) != sizeof (raw))
452216ab 1793 return FALSE;
c2f09c75 1794
f1bde64c 1795 for (sec = seg->sect_head; sec != NULL; sec = sec->next)
452216ab
TG		 1796 if (!bfd_mach_o_write_section_64 (abfd, sec))
1797 return FALSE;
c2f09c75 1798
452216ab 1799 return TRUE;
1e8a024a
TG		 1800}
1801
c2f09c75 1802static bfd_boolean
c9ffd2ea 1803bfd_mach_o_write_symtab_content (bfd *abfd, bfd_mach_o_symtab_command *sym)
116c20d2 1804{
046b007d 1805 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
116c20d2 1806 unsigned long i;
c2f09c75 1807 unsigned int wide = bfd_mach_o_wide_p (abfd);
c2f09c75
TG		 1808 struct bfd_strtab_hash *strtab;
1809 asymbol **symbols = bfd_get_outsymbols (abfd);
c9ffd2ea 1810 int padlen;
c2f09c75
TG		 1811
1812 /* Write the symbols first. */
1813 if (bfd_seek (abfd, sym->symoff, SEEK_SET) != 0)
1814 return FALSE;
1815
c2f09c75
TG		 1816 strtab = _bfd_stringtab_init ();
1817 if (strtab == NULL)
1818 return FALSE;
116c20d2 1819
a4551119
TG		 1820 if (sym->nsyms > 0)
1821 /* Although we don't strictly need to do this, for compatibility with
1822 Darwin system tools, actually output an empty string for the index
1823 0 entry. */
1824 _bfd_stringtab_add (strtab, "", TRUE, FALSE);
1825
116c20d2
NC		 1826 for (i = 0; i < sym->nsyms; i++)
1827 {
91d6fa6a 1828 bfd_size_type str_index;
92bc0e80 1829 bfd_mach_o_asymbol *s = (bfd_mach_o_asymbol *)symbols[i];
68ffbac6 1830
92bc0e80 1831 if (s->symbol.name == 0 || s->symbol.name[0] == '\0')
7f307238 1832 /* An index of 0 always means the empty string. */
91d6fa6a 1833 str_index = 0;
c2f09c75
TG		 1834 else
1835 {
91d6fa6a 1836 str_index = _bfd_stringtab_add (strtab, s->symbol.name, TRUE, FALSE);
7f307238 1837
91d6fa6a 1838 if (str_index == (bfd_size_type) -1)
c2f09c75
TG		 1839 goto err;
1840 }
46d1c23b 1841
c2f09c75 1842 if (wide)
46d1c23b
TG		 1843 {
1844 struct mach_o_nlist_64_external raw;
1845
1846 bfd_h_put_32 (abfd, str_index, raw.n_strx);
1847 bfd_h_put_8 (abfd, s->n_type, raw.n_type);
1848 bfd_h_put_8 (abfd, s->n_sect, raw.n_sect);
1849 bfd_h_put_16 (abfd, s->n_desc, raw.n_desc);
1850 bfd_h_put_64 (abfd, s->symbol.section->vma + s->symbol.value,
1851 raw.n_value);
1852
1853 if (bfd_bwrite (&raw, sizeof (raw), abfd) != sizeof (raw))
1854 goto err;
1855 }
c2f09c75 1856 else
46d1c23b
TG		 1857 {
1858 struct mach_o_nlist_external raw;
116c20d2 1859
46d1c23b
TG		 1860 bfd_h_put_32 (abfd, str_index, raw.n_strx);
1861 bfd_h_put_8 (abfd, s->n_type, raw.n_type);
1862 bfd_h_put_8 (abfd, s->n_sect, raw.n_sect);
1863 bfd_h_put_16 (abfd, s->n_desc, raw.n_desc);
1864 bfd_h_put_32 (abfd, s->symbol.section->vma + s->symbol.value,
1865 raw.n_value);
1866
1867 if (bfd_bwrite (&raw, sizeof (raw), abfd) != sizeof (raw))
1868 goto err;
1869 }
116c20d2 1870 }
c2f09c75 1871 sym->strsize = _bfd_stringtab_size (strtab);
92bc0e80
TG		 1872 sym->stroff = mdata->filelen;
1873 mdata->filelen += sym->strsize;
116c20d2 1874
c9ffd2ea 1875 if (bfd_seek (abfd, sym->stroff, SEEK_SET) != 0)
64d29018 1876 goto err;
c9ffd2ea 1877
c2f09c75
TG		 1878 if (_bfd_stringtab_emit (abfd, strtab) != TRUE)
1879 goto err;
116c20d2 1880
c9ffd2ea
TG		 1881 /* Pad string table. */
1882 padlen = bfd_mach_o_pad4 (abfd, sym->strsize);
1883 if (padlen < 0)
1884 return FALSE;
1885 mdata->filelen += padlen;
1886 sym->strsize += padlen;
116c20d2 1887
c2f09c75 1888 return TRUE;
116c20d2 1889
c2f09c75
TG		 1890 err:
1891 _bfd_stringtab_free (strtab);
64d29018 1892 sym->strsize = 0;
c2f09c75 1893 return FALSE;
116c20d2
NC		 1894}
1895
c9ffd2ea
TG		 1896static bfd_boolean
1897bfd_mach_o_write_symtab (bfd *abfd, bfd_mach_o_load_command *command)
1898{
1899 bfd_mach_o_symtab_command *sym = &command->command.symtab;
1900 struct mach_o_symtab_command_external raw;
1901
1902 BFD_ASSERT (command->type == BFD_MACH_O_LC_SYMTAB);
1903
1904 /* The command. */
1905 bfd_h_put_32 (abfd, sym->symoff, raw.symoff);
1906 bfd_h_put_32 (abfd, sym->nsyms, raw.nsyms);
1907 bfd_h_put_32 (abfd, sym->stroff, raw.stroff);
1908 bfd_h_put_32 (abfd, sym->strsize, raw.strsize);
1909
1910 if (bfd_seek (abfd, command->offset + BFD_MACH_O_LC_SIZE, SEEK_SET) != 0
1911 || bfd_bwrite (&raw, sizeof (raw), abfd) != sizeof (raw))
1912 return FALSE;
1913
1914 return TRUE;
1915}
1916
1917/* Count the number of indirect symbols in the image.
1918 Requires that the sections are in their final order. */
1919
1920static unsigned int
1921bfd_mach_o_count_indirect_symbols (bfd *abfd, bfd_mach_o_data_struct *mdata)
1922{
1923 unsigned int i;
1924 unsigned int nisyms = 0;
1925
1926 for (i = 0; i < mdata->nsects; ++i)
1927 {
1928 bfd_mach_o_section *sec = mdata->sections[i];
1929
1930 switch (sec->flags & BFD_MACH_O_SECTION_TYPE_MASK)
1931 {
1932 case BFD_MACH_O_S_NON_LAZY_SYMBOL_POINTERS:
1933 case BFD_MACH_O_S_LAZY_SYMBOL_POINTERS:
1934 case BFD_MACH_O_S_SYMBOL_STUBS:
1935 nisyms += bfd_mach_o_section_get_nbr_indirect (abfd, sec);
1936 break;
1937 default:
1938 break;
1939 }
1940 }
1941 return nisyms;
1942}
1943
1944/* Create the dysymtab. */
1945
1946static bfd_boolean
1947bfd_mach_o_build_dysymtab (bfd *abfd, bfd_mach_o_dysymtab_command *cmd)
1948{
1949 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
1950
1951 /* TODO:
1952 We are not going to try and fill these in yet and, moreover, we are
1953 going to bail if they are already set. */
1954 if (cmd->nmodtab != 0
1955 || cmd->ntoc != 0
1956 || cmd->nextrefsyms != 0)
1957 {
1958 (*_bfd_error_handler) (_("sorry: modtab, toc and extrefsyms are not yet"
1959 " implemented for dysymtab commands."));
1960 return FALSE;
1961 }
1962
1963 cmd->ilocalsym = 0;
1964
1965 if (bfd_get_symcount (abfd) > 0)
1966 {
1967 asymbol **symbols = bfd_get_outsymbols (abfd);
1968 unsigned long i;
1969
1970 /* Count the number of each kind of symbol. */
1971 for (i = 0; i < bfd_get_symcount (abfd); ++i)
1972 {
1973 bfd_mach_o_asymbol *s = (bfd_mach_o_asymbol *)symbols[i];
1974 if (s->n_type & (BFD_MACH_O_N_EXT | BFD_MACH_O_N_PEXT))
1975 break;
1976 }
1977 cmd->nlocalsym = i;
1978 cmd->iextdefsym = i;
1979 for (; i < bfd_get_symcount (abfd); ++i)
1980 {
1981 bfd_mach_o_asymbol *s = (bfd_mach_o_asymbol *)symbols[i];
1982 if ((s->n_type & BFD_MACH_O_N_TYPE) == BFD_MACH_O_N_UNDF)
1983 break;
1984 }
1985 cmd->nextdefsym = i - cmd->nlocalsym;
1986 cmd->iundefsym = cmd->nextdefsym + cmd->iextdefsym;
1987 cmd->nundefsym = bfd_get_symcount (abfd)
1988 - cmd->nlocalsym
1989 - cmd->nextdefsym;
1990 }
1991 else
1992 {
1993 cmd->nlocalsym = 0;
1994 cmd->iextdefsym = 0;
1995 cmd->nextdefsym = 0;
1996 cmd->iundefsym = 0;
1997 cmd->nundefsym = 0;
1998 }
1999
2000 cmd->nindirectsyms = bfd_mach_o_count_indirect_symbols (abfd, mdata);
2001 if (cmd->nindirectsyms > 0)
2002 {
2003 unsigned i;
2004 unsigned n;
2005
2006 mdata->filelen = FILE_ALIGN (mdata->filelen, 2);
2007 cmd->indirectsymoff = mdata->filelen;
2008 mdata->filelen += cmd->nindirectsyms * 4;
2009
64d29018
NC		 2010 if (cmd->nindirectsyms * 4 < cmd->nindirectsyms)
2011 return FALSE;
c9ffd2ea
TG		 2012 cmd->indirect_syms = bfd_zalloc (abfd, cmd->nindirectsyms * 4);
2013 if (cmd->indirect_syms == NULL)
2014 return FALSE;
2015
2016 n = 0;
2017 for (i = 0; i < mdata->nsects; ++i)
2018 {
2019 bfd_mach_o_section *sec = mdata->sections[i];
2020
2021 switch (sec->flags & BFD_MACH_O_SECTION_TYPE_MASK)
2022 {
2023 case BFD_MACH_O_S_NON_LAZY_SYMBOL_POINTERS:
2024 case BFD_MACH_O_S_LAZY_SYMBOL_POINTERS:
2025 case BFD_MACH_O_S_SYMBOL_STUBS:
2026 {
2027 unsigned j, num;
2028 bfd_mach_o_asymbol **isyms = sec->indirect_syms;
2029
2030 num = bfd_mach_o_section_get_nbr_indirect (abfd, sec);
2031 if (isyms == NULL || num == 0)
2032 break;
2033 /* Record the starting index in the reserved1 field. */
2034 sec->reserved1 = n;
2035 for (j = 0; j < num; j++, n++)
2036 {
2037 if (isyms[j] == NULL)
2038 cmd->indirect_syms[n] = BFD_MACH_O_INDIRECT_SYM_LOCAL;
2039 else if (isyms[j]->symbol.section == bfd_abs_section_ptr
2040 && ! (isyms[j]->n_type & BFD_MACH_O_N_EXT))
2041 cmd->indirect_syms[n] = BFD_MACH_O_INDIRECT_SYM_LOCAL
2042 | BFD_MACH_O_INDIRECT_SYM_ABS;
2043 else
2044 cmd->indirect_syms[n] = isyms[j]->symbol.udata.i;
2045 }
2046 }
2047 break;
2048 default:
2049 break;
2050 }
2051 }
2052 }
2053
2054 return TRUE;
2055}
2056
7f307238
IS		 2057/* Write a dysymtab command.
2058 TODO: Possibly coalesce writes of smaller objects. */
2059
2060static bfd_boolean
2061bfd_mach_o_write_dysymtab (bfd *abfd, bfd_mach_o_load_command *command)
2062{
2063 bfd_mach_o_dysymtab_command *cmd = &command->command.dysymtab;
2064
2065 BFD_ASSERT (command->type == BFD_MACH_O_LC_DYSYMTAB);
2066
2067 if (cmd->nmodtab != 0)
2068 {
2069 unsigned int i;
2070
2071 if (bfd_seek (abfd, cmd->modtaboff, SEEK_SET) != 0)
2072 return FALSE;
2073
2074 for (i = 0; i < cmd->nmodtab; i++)
2075 {
2076 bfd_mach_o_dylib_module *module = &cmd->dylib_module[i];
2077 unsigned int iinit;
2078 unsigned int ninit;
2079
2080 iinit = module->iinit & 0xffff;
2081 iinit |= ((module->iterm & 0xffff) << 16);
2082
2083 ninit = module->ninit & 0xffff;
2084 ninit |= ((module->nterm & 0xffff) << 16);
2085
2086 if (bfd_mach_o_wide_p (abfd))
2087 {
2088 struct mach_o_dylib_module_64_external w;
2089
2090 bfd_h_put_32 (abfd, module->module_name_idx, &w.module_name);
2091 bfd_h_put_32 (abfd, module->iextdefsym, &w.iextdefsym);
2092 bfd_h_put_32 (abfd, module->nextdefsym, &w.nextdefsym);
2093 bfd_h_put_32 (abfd, module->irefsym, &w.irefsym);
2094 bfd_h_put_32 (abfd, module->nrefsym, &w.nrefsym);
2095 bfd_h_put_32 (abfd, module->ilocalsym, &w.ilocalsym);
2096 bfd_h_put_32 (abfd, module->nlocalsym, &w.nlocalsym);
2097 bfd_h_put_32 (abfd, module->iextrel, &w.iextrel);
2098 bfd_h_put_32 (abfd, module->nextrel, &w.nextrel);
2099 bfd_h_put_32 (abfd, iinit, &w.iinit_iterm);
2100 bfd_h_put_32 (abfd, ninit, &w.ninit_nterm);
2101 bfd_h_put_64 (abfd, module->objc_module_info_addr,
2102 &w.objc_module_info_addr);
2103 bfd_h_put_32 (abfd, module->objc_module_info_size,
2104 &w.objc_module_info_size);
2105
2106 if (bfd_bwrite ((void *) &w, sizeof (w), abfd) != sizeof (w))
2107 return FALSE;
2108 }
2109 else
2110 {
2111 struct mach_o_dylib_module_external n;
2112
2113 bfd_h_put_32 (abfd, module->module_name_idx, &n.module_name);
2114 bfd_h_put_32 (abfd, module->iextdefsym, &n.iextdefsym);
2115 bfd_h_put_32 (abfd, module->nextdefsym, &n.nextdefsym);
2116 bfd_h_put_32 (abfd, module->irefsym, &n.irefsym);
2117 bfd_h_put_32 (abfd, module->nrefsym, &n.nrefsym);
2118 bfd_h_put_32 (abfd, module->ilocalsym, &n.ilocalsym);
2119 bfd_h_put_32 (abfd, module->nlocalsym, &n.nlocalsym);
2120 bfd_h_put_32 (abfd, module->iextrel, &n.iextrel);
2121 bfd_h_put_32 (abfd, module->nextrel, &n.nextrel);
2122 bfd_h_put_32 (abfd, iinit, &n.iinit_iterm);
2123 bfd_h_put_32 (abfd, ninit, &n.ninit_nterm);
2124 bfd_h_put_32 (abfd, module->objc_module_info_addr,
2125 &n.objc_module_info_addr);
2126 bfd_h_put_32 (abfd, module->objc_module_info_size,
2127 &n.objc_module_info_size);
2128
2129 if (bfd_bwrite ((void *) &n, sizeof (n), abfd) != sizeof (n))
2130 return FALSE;
2131 }
2132 }
2133 }
2134
2135 if (cmd->ntoc != 0)
2136 {
2137 unsigned int i;
2138
2139 if (bfd_seek (abfd, cmd->tocoff, SEEK_SET) != 0)
2140 return FALSE;
2141
2142 for (i = 0; i < cmd->ntoc; i++)
2143 {
2144 struct mach_o_dylib_table_of_contents_external raw;
2145 bfd_mach_o_dylib_table_of_content *toc = &cmd->dylib_toc[i];
2146
2147 bfd_h_put_32 (abfd, toc->symbol_index, &raw.symbol_index);
2148 bfd_h_put_32 (abfd, toc->module_index, &raw.module_index);
2149
2150 if (bfd_bwrite (&raw, sizeof (raw), abfd) != sizeof (raw))
2151 return FALSE;
2152 }
2153 }
68ffbac6 2154
7f307238
IS		 2155 if (cmd->nindirectsyms > 0)
2156 {
2157 unsigned int i;
2158
2159 if (bfd_seek (abfd, cmd->indirectsymoff, SEEK_SET) != 0)
2160 return FALSE;
2161
2162 for (i = 0; i < cmd->nindirectsyms; ++i)
2163 {
2164 unsigned char raw[4];
2165
2166 bfd_h_put_32 (abfd, cmd->indirect_syms[i], &raw);
2167 if (bfd_bwrite (raw, sizeof (raw), abfd) != sizeof (raw))
2168 return FALSE;
68ffbac6 2169 }
7f307238
IS		 2170 }
2171
2172 if (cmd->nextrefsyms != 0)
2173 {
2174 unsigned int i;
2175
2176 if (bfd_seek (abfd, cmd->extrefsymoff, SEEK_SET) != 0)
2177 return FALSE;
2178
2179 for (i = 0; i < cmd->nextrefsyms; i++)
2180 {
2181 unsigned long v;
2182 unsigned char raw[4];
2183 bfd_mach_o_dylib_reference *ref = &cmd->ext_refs[i];
2184
2185 /* Fields isym and flags are written as bit-fields, thus we need
2186 a specific processing for endianness. */
2187
2188 if (bfd_big_endian (abfd))
2189 {
2190 v = ((ref->isym & 0xffffff) << 8);
2191 v |= ref->flags & 0xff;
2192 }
2193 else
2194 {
2195 v = ref->isym & 0xffffff;
2196 v |= ((ref->flags & 0xff) << 24);
2197 }
2198
2199 bfd_h_put_32 (abfd, v, raw);
2200 if (bfd_bwrite (raw, sizeof (raw), abfd) != sizeof (raw))
2201 return FALSE;
2202 }
2203 }
2204
2205 /* The command. */
2206 if (bfd_seek (abfd, command->offset + BFD_MACH_O_LC_SIZE, SEEK_SET) != 0)
2207 return FALSE;
2208 else
2209 {
2210 struct mach_o_dysymtab_command_external raw;
2211
2212 bfd_h_put_32 (abfd, cmd->ilocalsym, &raw.ilocalsym);
2213 bfd_h_put_32 (abfd, cmd->nlocalsym, &raw.nlocalsym);
2214 bfd_h_put_32 (abfd, cmd->iextdefsym, &raw.iextdefsym);
2215 bfd_h_put_32 (abfd, cmd->nextdefsym, &raw.nextdefsym);
2216 bfd_h_put_32 (abfd, cmd->iundefsym, &raw.iundefsym);
2217 bfd_h_put_32 (abfd, cmd->nundefsym, &raw.nundefsym);
2218 bfd_h_put_32 (abfd, cmd->tocoff, &raw.tocoff);
2219 bfd_h_put_32 (abfd, cmd->ntoc, &raw.ntoc);
2220 bfd_h_put_32 (abfd, cmd->modtaboff, &raw.modtaboff);
2221 bfd_h_put_32 (abfd, cmd->nmodtab, &raw.nmodtab);
2222 bfd_h_put_32 (abfd, cmd->extrefsymoff, &raw.extrefsymoff);
2223 bfd_h_put_32 (abfd, cmd->nextrefsyms, &raw.nextrefsyms);
2224 bfd_h_put_32 (abfd, cmd->indirectsymoff, &raw.indirectsymoff);
2225 bfd_h_put_32 (abfd, cmd->nindirectsyms, &raw.nindirectsyms);
2226 bfd_h_put_32 (abfd, cmd->extreloff, &raw.extreloff);
2227 bfd_h_put_32 (abfd, cmd->nextrel, &raw.nextrel);
2228 bfd_h_put_32 (abfd, cmd->locreloff, &raw.locreloff);
2229 bfd_h_put_32 (abfd, cmd->nlocrel, &raw.nlocrel);
2230
2231 if (bfd_bwrite (&raw, sizeof (raw), abfd) != sizeof (raw))
2232 return FALSE;
2233 }
2234
2235 return TRUE;
2236}
2237
2238static unsigned
b22161d6 2239bfd_mach_o_primary_symbol_sort_key (bfd_mach_o_asymbol *s)
7f307238 2240{
b22161d6 2241 unsigned mtyp = s->n_type & BFD_MACH_O_N_TYPE;
68588f95
IS		 2242
2243 /* Just leave debug symbols where they are (pretend they are local, and
2244 then they will just be sorted on position). */
b22161d6 2245 if (s->n_type & BFD_MACH_O_N_STAB)
68588f95
IS		 2246 return 0;
2247
7f307238 2248 /* Local (we should never see an undefined local AFAICT). */
b22161d6 2249 if (! (s->n_type & (BFD_MACH_O_N_EXT | BFD_MACH_O_N_PEXT)))
7f307238
IS		 2250 return 0;
2251
2252 /* Common symbols look like undefined externs. */
68588f95 2253 if (mtyp == BFD_MACH_O_N_UNDF)
7f307238
IS		 2254 return 2;
2255
b22161d6 2256 /* A defined non-local, non-debug symbol. */
7f307238
IS		 2257 return 1;
2258}
2259
2260static int
2261bfd_mach_o_cf_symbols (const void *a, const void *b)
2262{
2263 bfd_mach_o_asymbol *sa = *(bfd_mach_o_asymbol **) a;
2264 bfd_mach_o_asymbol *sb = *(bfd_mach_o_asymbol **) b;
2265 unsigned int soa, sob;
2266
b22161d6
IS		 2267 soa = bfd_mach_o_primary_symbol_sort_key (sa);
2268 sob = bfd_mach_o_primary_symbol_sort_key (sb);
7f307238
IS		 2269 if (soa < sob)
2270 return -1;
2271
2272 if (soa > sob)
2273 return 1;
2274
68588f95 2275 /* If it's local or stab, just preserve the input order. */
7f307238
IS		 2276 if (soa == 0)
2277 {
2278 if (sa->symbol.udata.i < sb->symbol.udata.i)
2279 return -1;
2280 if (sa->symbol.udata.i > sb->symbol.udata.i)
2281 return 1;
b22161d6
IS		 2282
2283 /* This is probably an error. */
7f307238
IS		 2284 return 0;
2285 }
2286
b22161d6
IS		 2287 /* The second sort key is name. */
2288 return strcmp (sa->symbol.name, sb->symbol.name);
7f307238
IS		 2289}
2290
2291/* Process the symbols.
2292
2293 This should be OK for single-module files - but it is not likely to work
2294 for multi-module shared libraries.
2295
2296 (a) If the application has not filled in the relevant mach-o fields, make
2297 an estimate.
2298
2299 (b) Order them, like this:
2300 ( i) local.
2301 (unsorted)
2302 ( ii) external defined
2303 (by name)
b22161d6 2304 (iii) external undefined/common
7f307238
IS		 2305 (by name)
2306 ( iv) common
2307 (by name)
b22161d6 2308*/
92bc0e80
TG		 2309
2310static bfd_boolean
b22161d6 2311bfd_mach_o_mangle_symbols (bfd *abfd)
92bc0e80
TG		 2312{
2313 unsigned long i;
2314 asymbol **symbols = bfd_get_outsymbols (abfd);
2315
7f307238
IS		 2316 if (symbols == NULL || bfd_get_symcount (abfd) == 0)
2317 return TRUE;
2318
92bc0e80
TG		 2319 for (i = 0; i < bfd_get_symcount (abfd); i++)
2320 {
2321 bfd_mach_o_asymbol *s = (bfd_mach_o_asymbol *)symbols[i];
2322
b22161d6
IS		 2323 /* We use this value, which is out-of-range as a symbol index, to signal
2324 that the mach-o-specific data are not filled in and need to be created
2325 from the bfd values. It is much preferable for the application to do
2326 this, since more meaningful diagnostics can be made that way. */
2327
2328 if (s->symbol.udata.i == SYM_MACHO_FIELDS_UNSET)
92bc0e80 2329 {
b22161d6
IS		 2330 /* No symbol information has been set - therefore determine
2331 it from the bfd symbol flags/info. */
92bc0e80
TG		 2332 if (s->symbol.section == bfd_abs_section_ptr)
2333 s->n_type = BFD_MACH_O_N_ABS;
2334 else if (s->symbol.section == bfd_und_section_ptr)
2335 {
2336 s->n_type = BFD_MACH_O_N_UNDF;
2337 if (s->symbol.flags & BSF_WEAK)
2338 s->n_desc |= BFD_MACH_O_N_WEAK_REF;
7f307238
IS		 2339 /* mach-o automatically makes undefined symbols extern. */
2340 s->n_type |= BFD_MACH_O_N_EXT;
b22161d6 2341 s->symbol.flags |= BSF_GLOBAL;
92bc0e80
TG		 2342 }
2343 else if (s->symbol.section == bfd_com_section_ptr)
b22161d6
IS		 2344 {
2345 s->n_type = BFD_MACH_O_N_UNDF | BFD_MACH_O_N_EXT;
2346 s->symbol.flags |= BSF_GLOBAL;
2347 }
92bc0e80
TG		 2348 else
2349 s->n_type = BFD_MACH_O_N_SECT;
68ffbac6 2350
92bc0e80
TG		 2351 if (s->symbol.flags & BSF_GLOBAL)
2352 s->n_type |= BFD_MACH_O_N_EXT;
2353 }
2354
7f307238 2355 /* Put the section index in, where required. */
68588f95 2356 if ((s->symbol.section != bfd_abs_section_ptr
92bc0e80
TG		 2357 && s->symbol.section != bfd_und_section_ptr
2358 && s->symbol.section != bfd_com_section_ptr)
68588f95
IS		 2359 || ((s->n_type & BFD_MACH_O_N_STAB) != 0
2360 && s->symbol.name == NULL))
707e555b 2361 s->n_sect = s->symbol.section->output_section->target_index;
92bc0e80 2362
b22161d6
IS		 2363 /* Number to preserve order for local and debug syms. */
2364 s->symbol.udata.i = i;
7f307238
IS		 2365 }
2366
b22161d6
IS		 2367 /* Sort the symbols. */
2368 qsort ((void *) symbols, (size_t) bfd_get_symcount (abfd),
2369 sizeof (asymbol *), bfd_mach_o_cf_symbols);
7f307238 2370
b22161d6
IS		 2371 for (i = 0; i < bfd_get_symcount (abfd); ++i)
2372 {
2373 bfd_mach_o_asymbol *s = (bfd_mach_o_asymbol *)symbols[i];
2374 s->symbol.udata.i = i; /* renumber. */
7f307238
IS		 2375 }
2376
2377 return TRUE;
2378}
2379
2380/* We build a flat table of sections, which can be re-ordered if necessary.
2381 Fill in the section number and other mach-o-specific data. */
2382
2383static bfd_boolean
2384bfd_mach_o_mangle_sections (bfd *abfd, bfd_mach_o_data_struct *mdata)
2385{
2386 asection *sec;
2387 unsigned target_index;
2388 unsigned nsect;
2389
2390 nsect = bfd_count_sections (abfd);
68ffbac6 2391
7f307238
IS		 2392 /* Don't do it if it's already set - assume the application knows what it's
2393 doing. */
2394 if (mdata->nsects == nsect
2395 && (mdata->nsects == 0 || mdata->sections != NULL))
2396 return TRUE;
2397
a1165289
NC		 2398 /* We need to check that this can be done... */
2399 if (nsect > 255)
2400 {
2401 (*_bfd_error_handler) (_("mach-o: there are too many sections (%u)"
2402 " maximum is 255,\n"), nsect);
2403 return FALSE;
2404 }
2405
7f307238 2406 mdata->nsects = nsect;
64d29018
NC		 2407 mdata->sections = bfd_alloc2 (abfd,
2408 mdata->nsects, sizeof (bfd_mach_o_section *));
7f307238
IS		 2409 if (mdata->sections == NULL)
2410 return FALSE;
2411
7f307238 2412 /* Create Mach-O sections.
68ffbac6 2413 Section type, attribute and align should have been set when the
7f307238
IS		 2414 section was created - either read in or specified. */
2415 target_index = 0;
2416 for (sec = abfd->sections; sec; sec = sec->next)
2417 {
2418 unsigned bfd_align = bfd_get_section_alignment (abfd, sec);
2419 bfd_mach_o_section *msect = bfd_mach_o_get_mach_o_section (sec);
2420
2421 mdata->sections[target_index] = msect;
2422
2423 msect->addr = bfd_get_section_vma (abfd, sec);
2424 msect->size = bfd_get_section_size (sec);
2425
68ffbac6 2426 /* Use the largest alignment set, in case it was bumped after the
7f307238
IS		 2427 section was created. */
2428 msect->align = msect->align > bfd_align ? msect->align : bfd_align;
2429
2430 msect->offset = 0;
2431 sec->target_index = ++target_index;
92bc0e80 2432 }
7f307238 2433
92bc0e80
TG		 2434 return TRUE;
2435}
2436
154a1ee5 2437bfd_boolean
116c20d2 2438bfd_mach_o_write_contents (bfd *abfd)
3af9a47b 2439{
046b007d 2440 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
c9ffd2ea
TG		 2441 bfd_mach_o_load_command *cmd;
2442 bfd_mach_o_symtab_command *symtab = NULL;
2443 bfd_mach_o_dysymtab_command *dysymtab = NULL;
2444 bfd_mach_o_segment_command *linkedit = NULL;
3af9a47b 2445
7f307238 2446 /* Make the commands, if not already present. */
c9ffd2ea
TG		 2447 if (!abfd->output_has_begun && !bfd_mach_o_build_commands (abfd))
2448 return FALSE;
2449 abfd->output_has_begun = TRUE;
92bc0e80 2450
c9ffd2ea 2451 /* Write the header. */
154a1ee5 2452 if (!bfd_mach_o_write_header (abfd, &mdata->header))
b34976b6 2453 return FALSE;
3af9a47b 2454
c9ffd2ea
TG		 2455 /* First pass: allocate the linkedit segment. */
2456 for (cmd = mdata->first_command; cmd != NULL; cmd = cmd->next)
2457 switch (cmd->type)
2458 {
2459 case BFD_MACH_O_LC_SEGMENT_64:
2460 case BFD_MACH_O_LC_SEGMENT:
2461 if (strcmp (cmd->command.segment.segname, "__LINKEDIT") == 0)
2462 linkedit = &cmd->command.segment;
2463 break;
2464 case BFD_MACH_O_LC_SYMTAB:
2465 symtab = &cmd->command.symtab;
2466 break;
2467 case BFD_MACH_O_LC_DYSYMTAB:
2468 dysymtab = &cmd->command.dysymtab;
2469 break;
2470 case BFD_MACH_O_LC_DYLD_INFO:
2471 {
2472 bfd_mach_o_dyld_info_command *di = &cmd->command.dyld_info;
2473
2474 if (di->rebase_size != 0)
2475 {
2476 di->rebase_off = mdata->filelen;
2477 mdata->filelen += di->rebase_size;
2478 }
2479 if (di->bind_size != 0)
2480 {
2481 di->bind_off = mdata->filelen;
2482 mdata->filelen += di->bind_size;
2483 }
2484 if (di->weak_bind_size != 0)
2485 {
2486 di->weak_bind_off = mdata->filelen;
2487 mdata->filelen += di->weak_bind_size;
2488 }
2489 if (di->lazy_bind_size != 0)
2490 {
2491 di->lazy_bind_off = mdata->filelen;
2492 mdata->filelen += di->lazy_bind_size;
2493 }
2494 if (di->export_size != 0)
2495 {
2496 di->export_off = mdata->filelen;
2497 mdata->filelen += di->export_size;
2498 }
2499 }
2500 break;
2501 case BFD_MACH_O_LC_LOAD_DYLIB:
2502 case BFD_MACH_O_LC_LOAD_DYLINKER:
2503 case BFD_MACH_O_LC_MAIN:
2504 /* Nothing to do. */
2505 break;
2506 default:
2507 (*_bfd_error_handler)
2508 (_("unable to allocate data for load command 0x%lx"),
2509 (unsigned long) cmd->type);
2510 break;
2511 }
2512
2513 /* Specially handle symtab and dysymtab. */
2514
2515 /* Pre-allocate the symbol table (but not the string table). The reason
2516 is that the dysymtab is after the symbol table but before the string
2517 table (required by the native strip tool). */
2518 if (symtab != NULL)
2519 {
2520 unsigned int symlen;
2521 unsigned int wide = bfd_mach_o_wide_p (abfd);
2522
2523 symlen = wide ? BFD_MACH_O_NLIST_64_SIZE : BFD_MACH_O_NLIST_SIZE;
2524
2525 /* Align for symbols. */
2526 mdata->filelen = FILE_ALIGN (mdata->filelen, wide ? 3 : 2);
2527 symtab->symoff = mdata->filelen;
2528
2529 symtab->nsyms = bfd_get_symcount (abfd);
2530 mdata->filelen += symtab->nsyms * symlen;
2531 }
2532
2533 /* Build the dysymtab. */
2534 if (dysymtab != NULL)
2535 if (!bfd_mach_o_build_dysymtab (abfd, dysymtab))
2536 return FALSE;
2537
2538 /* Write symtab and strtab. */
2539 if (symtab != NULL)
2540 if (!bfd_mach_o_write_symtab_content (abfd, symtab))
2541 return FALSE;
2542
2543 /* Adjust linkedit size. */
2544 if (linkedit != NULL)
2545 {
2546 /* bfd_vma pagemask = bfd_mach_o_get_backend_data (abfd)->page_size - 1; */
2547
2548 linkedit->vmsize = mdata->filelen - linkedit->fileoff;
2549 /* linkedit->vmsize = (linkedit->vmsize + pagemask) & ~pagemask; */
2550 linkedit->filesize = mdata->filelen - linkedit->fileoff;
2551
2552 linkedit->initprot = BFD_MACH_O_PROT_READ;
2553 linkedit->maxprot = BFD_MACH_O_PROT_READ | BFD_MACH_O_PROT_WRITE
2554 | BFD_MACH_O_PROT_EXECUTE;
2555 }
2556
2557 /* Second pass: write commands. */
2558 for (cmd = mdata->first_command; cmd != NULL; cmd = cmd->next)
3af9a47b 2559 {
46d1c23b 2560 struct mach_o_load_command_external raw;
3af9a47b
NC		 2561 unsigned long typeflag;
2562
c9ffd2ea 2563 typeflag = cmd->type | (cmd->type_required ? BFD_MACH_O_LC_REQ_DYLD : 0);
3af9a47b 2564
46d1c23b 2565 bfd_h_put_32 (abfd, typeflag, raw.cmd);
c9ffd2ea 2566 bfd_h_put_32 (abfd, cmd->len, raw.cmdsize);
3af9a47b 2567
c9ffd2ea 2568 if (bfd_seek (abfd, cmd->offset, SEEK_SET) != 0
46d1c23b 2569 || bfd_bwrite (&raw, BFD_MACH_O_LC_SIZE, abfd) != 8)
b34976b6 2570 return FALSE;
3af9a47b 2571
c9ffd2ea 2572 switch (cmd->type)
3af9a47b
NC		 2573 {
2574 case BFD_MACH_O_LC_SEGMENT:
c9ffd2ea 2575 if (!bfd_mach_o_write_segment_32 (abfd, cmd))
1e8a024a
TG		 2576 return FALSE;
2577 break;
2578 case BFD_MACH_O_LC_SEGMENT_64:
c9ffd2ea 2579 if (!bfd_mach_o_write_segment_64 (abfd, cmd))
b34976b6 2580 return FALSE;
3af9a47b
NC		 2581 break;
2582 case BFD_MACH_O_LC_SYMTAB:
c9ffd2ea 2583 if (!bfd_mach_o_write_symtab (abfd, cmd))
b34976b6 2584 return FALSE;
3af9a47b 2585 break;
7f307238 2586 case BFD_MACH_O_LC_DYSYMTAB:
c9ffd2ea 2587 if (!bfd_mach_o_write_dysymtab (abfd, cmd))
7f307238
IS		 2588 return FALSE;
2589 break;
3af9a47b
NC		 2590 case BFD_MACH_O_LC_THREAD:
2591 case BFD_MACH_O_LC_UNIXTHREAD:
c9ffd2ea 2592 if (!bfd_mach_o_write_thread (abfd, cmd))
b34976b6 2593 return FALSE;
3af9a47b 2594 break;
3af9a47b 2595 case BFD_MACH_O_LC_LOAD_DYLIB:
c9ffd2ea
TG		 2596 if (!bfd_mach_o_write_dylib (abfd, cmd))
2597 return FALSE;
2598 break;
3af9a47b 2599 case BFD_MACH_O_LC_LOAD_DYLINKER:
c9ffd2ea
TG		 2600 if (!bfd_mach_o_write_dylinker (abfd, cmd))
2601 return FALSE;
2602 break;
2603 case BFD_MACH_O_LC_MAIN:
2604 if (!bfd_mach_o_write_main (abfd, cmd))
2605 return FALSE;
2606 break;
2607 case BFD_MACH_O_LC_DYLD_INFO:
2608 if (!bfd_mach_o_write_dyld_info (abfd, cmd))
2609 return FALSE;
3af9a47b
NC		 2610 break;
2611 default:
3cc27770
TG		 2612 (*_bfd_error_handler)
2613 (_("unable to write unknown load command 0x%lx"),
c9ffd2ea 2614 (unsigned long) cmd->type);
b34976b6 2615 return FALSE;
3af9a47b
NC		 2616 }
2617 }
2618
b34976b6 2619 return TRUE;
3af9a47b
NC		 2620}
2621
f1bde64c
TG		 2622static void
2623bfd_mach_o_append_section_to_segment (bfd_mach_o_segment_command *seg,
c9ffd2ea 2624 bfd_mach_o_section *s)
f1bde64c 2625{
f1bde64c
TG		 2626 if (seg->sect_head == NULL)
2627 seg->sect_head = s;
2628 else
2629 seg->sect_tail->next = s;
2630 seg->sect_tail = s;
2631}
2632
2633/* Create section Mach-O flags from BFD flags. */
2634
2635static void
3cc27770
TG		 2636bfd_mach_o_set_section_flags_from_bfd (bfd *abfd ATTRIBUTE_UNUSED,
2637 asection *sec)
f1bde64c
TG		 2638{
2639 flagword bfd_flags;
2640 bfd_mach_o_section *s = bfd_mach_o_get_mach_o_section (sec);
2641
2642 /* Create default flags. */
2643 bfd_flags = bfd_get_section_flags (abfd, sec);
2644 if ((bfd_flags & SEC_CODE) == SEC_CODE)
2645 s->flags = BFD_MACH_O_S_ATTR_PURE_INSTRUCTIONS
2646 | BFD_MACH_O_S_ATTR_SOME_INSTRUCTIONS
2647 | BFD_MACH_O_S_REGULAR;
2648 else if ((bfd_flags & (SEC_ALLOC | SEC_LOAD)) == SEC_ALLOC)
2649 s->flags = BFD_MACH_O_S_ZEROFILL;
2650 else if (bfd_flags & SEC_DEBUGGING)
2651 s->flags = BFD_MACH_O_S_REGULAR | BFD_MACH_O_S_ATTR_DEBUG;
2652 else
2653 s->flags = BFD_MACH_O_S_REGULAR;
2654}
2655
7f307238 2656static bfd_boolean
c9ffd2ea 2657bfd_mach_o_build_obj_seg_command (bfd *abfd, bfd_mach_o_segment_command *seg)
7f307238 2658{
c9ffd2ea
TG		 2659 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
2660 unsigned int i, j;
7f307238 2661
7f307238 2662 seg->vmaddr = 0;
7f307238 2663 seg->fileoff = mdata->filelen;
c9ffd2ea
TG		 2664 seg->initprot = BFD_MACH_O_PROT_READ | BFD_MACH_O_PROT_WRITE
2665 | BFD_MACH_O_PROT_EXECUTE;
2666 seg->maxprot = seg->initprot;
7f307238 2667
68ffbac6 2668 /* Append sections to the segment.
09903f4b
IS		 2669
2670 This is a little tedious, we have to honor the need to account zerofill
2671 sections after all the rest. This forces us to do the calculation of
68ffbac6 2672 total vmsize in three passes so that any alignment increments are
09903f4b 2673 properly accounted. */
7f307238
IS		 2674 for (i = 0; i < mdata->nsects; ++i)
2675 {
2676 bfd_mach_o_section *s = mdata->sections[i];
2677 asection *sec = s->bfdsection;
2678
09903f4b
IS		 2679 /* Although we account for zerofill section sizes in vm order, they are
2680 placed in the file in source sequence. */
c9ffd2ea 2681 bfd_mach_o_append_section_to_segment (seg, s);
e5081f2f 2682 s->offset = 0;
68ffbac6 2683
c9ffd2ea
TG		 2684 /* Zerofill sections have zero file size & offset, the only content
2685 written to the file is the symbols. */
e5081f2f 2686 if ((s->flags & BFD_MACH_O_SECTION_TYPE_MASK) == BFD_MACH_O_S_ZEROFILL
c9ffd2ea
TG		 2687 || ((s->flags & BFD_MACH_O_SECTION_TYPE_MASK)
2688 == BFD_MACH_O_S_GB_ZEROFILL))
e5081f2f
IS		 2689 continue;
2690
c9ffd2ea
TG		 2691 /* The Darwin system tools (in MH_OBJECT files, at least) always account
2692 sections, even those with zero size. */
e5081f2f 2693 if (s->size > 0)
c9ffd2ea 2694 {
09903f4b
IS		 2695 seg->vmsize = FILE_ALIGN (seg->vmsize, s->align);
2696 seg->vmsize += s->size;
2697
c9ffd2ea
TG		 2698 /* MH_OBJECT files have unaligned content. */
2699 if (1)
2700 {
2701 seg->filesize = FILE_ALIGN (seg->filesize, s->align);
2702 mdata->filelen = FILE_ALIGN (mdata->filelen, s->align);
2703 }
09903f4b
IS		 2704 seg->filesize += s->size;
2705
c9ffd2ea
TG		 2706 /* The system tools write even zero-sized sections with an offset
2707 field set to the current file position. */
7f307238 2708 s->offset = mdata->filelen;
c9ffd2ea 2709 }
7f307238
IS		 2710
2711 sec->filepos = s->offset;
7f307238
IS		 2712 mdata->filelen += s->size;
2713 }
2714
3cc27770 2715 /* Now pass through again, for zerofill, only now we just update the
c9ffd2ea
TG		 2716 vmsize, and then for zerofill_GB. */
2717 for (j = 0; j < 2; j++)
09903f4b 2718 {
c9ffd2ea 2719 unsigned int stype;
68ffbac6 2720
c9ffd2ea
TG		 2721 if (j == 0)
2722 stype = BFD_MACH_O_S_ZEROFILL;
2723 else
2724 stype = BFD_MACH_O_S_GB_ZEROFILL;
09903f4b 2725
c9ffd2ea
TG		 2726 for (i = 0; i < mdata->nsects; ++i)
2727 {
2728 bfd_mach_o_section *s = mdata->sections[i];
2729
2730 if ((s->flags & BFD_MACH_O_SECTION_TYPE_MASK) != stype)
2731 continue;
2732
2733 if (s->size > 0)
2734 {
2735 seg->vmsize = FILE_ALIGN (seg->vmsize, s->align);
2736 seg->vmsize += s->size;
2737 }
09903f4b
IS		 2738 }
2739 }
bb76d940 2740
09903f4b 2741 /* Allocate space for the relocations. */
707e555b 2742 mdata->filelen = FILE_ALIGN (mdata->filelen, 2);
bb76d940
IS		 2743
2744 for (i = 0; i < mdata->nsects; ++i)
2745 {
2746 bfd_mach_o_section *ms = mdata->sections[i];
2747 asection *sec = ms->bfdsection;
68ffbac6 2748
c9ffd2ea
TG		 2749 ms->nreloc = sec->reloc_count;
2750 if (ms->nreloc == 0)
bb76d940 2751 {
c9ffd2ea 2752 /* Clear nreloc and reloff if there is no relocs. */
bb76d940
IS		 2753 ms->reloff = 0;
2754 continue;
2755 }
2756 sec->rel_filepos = mdata->filelen;
2757 ms->reloff = sec->rel_filepos;
2758 mdata->filelen += sec->reloc_count * BFD_MACH_O_RELENT_SIZE;
2759 }
7f307238
IS		 2760
2761 return TRUE;
2762}
2763
c9ffd2ea
TG		 2764static bfd_boolean
2765bfd_mach_o_build_exec_seg_command (bfd *abfd, bfd_mach_o_segment_command *seg)
50d10658 2766{
c9ffd2ea 2767 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
50d10658 2768 unsigned int i;
c9ffd2ea
TG		 2769 bfd_vma pagemask = bfd_mach_o_get_backend_data (abfd)->page_size - 1;
2770 bfd_vma vma;
2771 bfd_mach_o_section *s;
2772
2773 seg->vmsize = 0;
50d10658 2774
c9ffd2ea
TG		 2775 seg->fileoff = mdata->filelen;
2776 seg->maxprot = 0;
2777 seg->initprot = 0;
2778 seg->flags = 0;
2779
2780 /* Append sections to the segment. We assume they are properly ordered
2781 by vma (but we check that). */
2782 vma = 0;
50d10658
IS		 2783 for (i = 0; i < mdata->nsects; ++i)
2784 {
c9ffd2ea 2785 s = mdata->sections[i];
50d10658 2786
c9ffd2ea
TG		 2787 /* Consider only sections for this segment. */
2788 if (strcmp (seg->segname, s->segname) != 0)
2789 continue;
50d10658 2790
c9ffd2ea 2791 bfd_mach_o_append_section_to_segment (seg, s);
7f307238 2792
86eafac0
NC		 2793 if (s->addr < vma)
2794 {
2795 (*_bfd_error_handler)
2796 (_("section address (%lx) below start of segment (%lx)"),
2797 (unsigned long) s->addr, (unsigned long) vma);
2798 return FALSE;
2799 }
2800
c9ffd2ea 2801 vma = s->addr + s->size;
7f307238
IS		 2802 }
2803
c9ffd2ea
TG		 2804 /* Set segment file offset: make it page aligned. */
2805 vma = seg->sect_head->addr;
2806 seg->vmaddr = vma & ~pagemask;
2807 if ((mdata->filelen & pagemask) > (vma & pagemask))
2808 mdata->filelen += pagemask + 1;
2809 seg->fileoff = mdata->filelen & ~pagemask;
2810 mdata->filelen = seg->fileoff + (vma & pagemask);
7f307238 2811
c9ffd2ea
TG		 2812 /* Set section file offset. */
2813 for (s = seg->sect_head; s != NULL; s = s->next)
7f307238 2814 {
c9ffd2ea
TG		 2815 asection *sec = s->bfdsection;
2816 flagword flags = bfd_get_section_flags (abfd, sec);
b22161d6 2817
c9ffd2ea
TG		 2818 /* Adjust segment size. */
2819 seg->vmsize = FILE_ALIGN (seg->vmsize, s->align);
2820 seg->vmsize += s->size;
2821
2822 /* File offset and length. */
2823 seg->filesize = FILE_ALIGN (seg->filesize, s->align);
2824
2825 if ((s->flags & BFD_MACH_O_SECTION_TYPE_MASK) != BFD_MACH_O_S_ZEROFILL
2826 && ((s->flags & BFD_MACH_O_SECTION_TYPE_MASK)
2827 != BFD_MACH_O_S_GB_ZEROFILL))
b22161d6 2828 {
c9ffd2ea
TG		 2829 mdata->filelen = FILE_ALIGN (mdata->filelen, s->align);
2830
2831 s->offset = mdata->filelen;
2832 s->bfdsection->filepos = s->offset;
2833
2834 seg->filesize += s->size;
2835 mdata->filelen += s->size;
b22161d6 2836 }
c9ffd2ea 2837 else
b22161d6 2838 {
c9ffd2ea
TG		 2839 s->offset = 0;
2840 s->bfdsection->filepos = 0;
2841 }
2842
2843 /* Set protection. */
2844 if (flags & SEC_LOAD)
2845 {
2846 if (flags & SEC_CODE)
2847 seg->initprot |= BFD_MACH_O_PROT_READ | BFD_MACH_O_PROT_EXECUTE;
2848 if ((flags & (SEC_DATA | SEC_READONLY)) == SEC_DATA)
2849 seg->initprot |= BFD_MACH_O_PROT_WRITE | BFD_MACH_O_PROT_READ;
b22161d6 2850 }
c9ffd2ea
TG		 2851
2852 /* Relocs shouldn't appear in non-object files. */
2853 if (s->bfdsection->reloc_count != 0)
2854 return FALSE;
b22161d6 2855 }
c9ffd2ea
TG		 2856
2857 /* Set maxprot. */
2858 if (seg->initprot != 0)
2859 seg->maxprot = BFD_MACH_O_PROT_READ | BFD_MACH_O_PROT_WRITE
2860 | BFD_MACH_O_PROT_EXECUTE;
b22161d6 2861 else
c9ffd2ea 2862 seg->maxprot = 0;
b22161d6 2863
c9ffd2ea
TG		 2864 /* Round segment size (and file size). */
2865 seg->vmsize = (seg->vmsize + pagemask) & ~pagemask;
2866 seg->filesize = (seg->filesize + pagemask) & ~pagemask;
2867 mdata->filelen = (mdata->filelen + pagemask) & ~pagemask;
7f307238 2868
c9ffd2ea
TG		 2869 return TRUE;
2870}
68ffbac6 2871
c9ffd2ea
TG		 2872/* Layout the commands: set commands size and offset, set ncmds and sizeofcmds
2873 fields in header. */
68ffbac6 2874
86eafac0 2875static bfd_boolean
c9ffd2ea
TG		 2876bfd_mach_o_layout_commands (bfd_mach_o_data_struct *mdata)
2877{
2878 unsigned wide = mach_o_wide_p (&mdata->header);
2879 unsigned int hdrlen;
2880 ufile_ptr offset;
2881 bfd_mach_o_load_command *cmd;
2882 unsigned int align;
86eafac0 2883 bfd_boolean ret = TRUE;
c9ffd2ea
TG		 2884
2885 hdrlen = wide ? BFD_MACH_O_HEADER_64_SIZE : BFD_MACH_O_HEADER_SIZE;
2886 align = wide ? 8 - 1 : 4 - 1;
2887 offset = hdrlen;
2888 mdata->header.ncmds = 0;
50d10658 2889
c9ffd2ea
TG		 2890 for (cmd = mdata->first_command; cmd; cmd = cmd->next)
2891 {
2892 mdata->header.ncmds++;
2893 cmd->offset = offset;
68ffbac6 2894
c9ffd2ea
TG		 2895 switch (cmd->type)
2896 {
2897 case BFD_MACH_O_LC_SEGMENT_64:
2898 cmd->len = BFD_MACH_O_LC_SEGMENT_64_SIZE
2899 + BFD_MACH_O_SECTION_64_SIZE * cmd->command.segment.nsects;
2900 break;
2901 case BFD_MACH_O_LC_SEGMENT:
2902 cmd->len = BFD_MACH_O_LC_SEGMENT_SIZE
2903 + BFD_MACH_O_SECTION_SIZE * cmd->command.segment.nsects;
2904 break;
2905 case BFD_MACH_O_LC_SYMTAB:
2906 cmd->len = sizeof (struct mach_o_symtab_command_external)
2907 + BFD_MACH_O_LC_SIZE;
2908 break;
2909 case BFD_MACH_O_LC_DYSYMTAB:
2910 cmd->len = sizeof (struct mach_o_dysymtab_command_external)
2911 + BFD_MACH_O_LC_SIZE;
2912 break;
2913 case BFD_MACH_O_LC_LOAD_DYLIB:
2914 cmd->len = sizeof (struct mach_o_dylib_command_external)
2915 + BFD_MACH_O_LC_SIZE;
2916 cmd->command.dylib.name_offset = cmd->len;
2917 cmd->len += strlen (cmd->command.dylib.name_str);
2918 cmd->len = (cmd->len + align) & ~align;
2919 break;
2920 case BFD_MACH_O_LC_LOAD_DYLINKER:
2921 cmd->len = sizeof (struct mach_o_str_command_external)
2922 + BFD_MACH_O_LC_SIZE;
2923 cmd->command.dylinker.name_offset = cmd->len;
2924 cmd->len += strlen (cmd->command.dylinker.name_str);
2925 cmd->len = (cmd->len + align) & ~align;
2926 break;
2927 case BFD_MACH_O_LC_MAIN:
2928 cmd->len = sizeof (struct mach_o_entry_point_command_external)
2929 + BFD_MACH_O_LC_SIZE;
2930 break;
2931 case BFD_MACH_O_LC_DYLD_INFO:
2932 cmd->len = sizeof (struct mach_o_dyld_info_command_external)
2933 + BFD_MACH_O_LC_SIZE;
2934 break;
2935 default:
2936 (*_bfd_error_handler)
2937 (_("unable to layout unknown load command 0x%lx"),
2938 (unsigned long) cmd->type);
86eafac0 2939 ret = FALSE;
c9ffd2ea 2940 break;
7f307238 2941 }
c9ffd2ea
TG		 2942
2943 BFD_ASSERT (cmd->len % (align + 1) == 0);
2944 offset += cmd->len;
7f307238 2945 }
c9ffd2ea
TG		 2946 mdata->header.sizeofcmds = offset - hdrlen;
2947 mdata->filelen = offset;
86eafac0
NC		 2948
2949 return ret;
c9ffd2ea 2950}
7f307238 2951
c9ffd2ea
TG		 2952/* Subroutine of bfd_mach_o_build_commands: set type, name and nsects of a
2953 segment. */
2954
2955static void
2956bfd_mach_o_init_segment (bfd_mach_o_data_struct *mdata,
2957 bfd_mach_o_load_command *cmd,
2958 const char *segname, unsigned int nbr_sect)
2959{
2960 bfd_mach_o_segment_command *seg = &cmd->command.segment;
2961 unsigned wide = mach_o_wide_p (&mdata->header);
2962
2963 /* Init segment command. */
2964 cmd->type = wide ? BFD_MACH_O_LC_SEGMENT_64 : BFD_MACH_O_LC_SEGMENT;
2965 cmd->type_required = FALSE;
2966
2967 strcpy (seg->segname, segname);
2968 seg->nsects = nbr_sect;
2969
2970 seg->vmaddr = 0;
2971 seg->vmsize = 0;
2972
2973 seg->fileoff = 0;
2974 seg->filesize = 0;
2975 seg->maxprot = 0;
2976 seg->initprot = 0;
2977 seg->flags = 0;
2978 seg->sect_head = NULL;
2979 seg->sect_tail = NULL;
7f307238
IS		 2980}
2981
2982/* Build Mach-O load commands (currently assuming an MH_OBJECT file).
2983 TODO: Other file formats, rebuilding symtab/dysymtab commands for strip
2984 and copy functionality. */
154a1ee5
TG		 2985
2986bfd_boolean
2987bfd_mach_o_build_commands (bfd *abfd)
2988{
046b007d 2989 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
bbd56171 2990 unsigned wide = mach_o_wide_p (&mdata->header);
c9ffd2ea
TG		 2991 unsigned int nbr_segcmd = 0;
2992 bfd_mach_o_load_command *commands;
2993 unsigned int nbr_commands;
bbd56171
IS		 2994 int symtab_idx = -1;
2995 int dysymtab_idx = -1;
c9ffd2ea
TG		 2996 int main_idx = -1;
2997 unsigned int i;
154a1ee5 2998
c9ffd2ea
TG		 2999 /* Return now if already built. */
3000 if (mdata->header.ncmds != 0)
3001 return TRUE;
154a1ee5 3002
7f307238 3003 /* Fill in the file type, if not already set. */
7f307238 3004 if (mdata->header.filetype == 0)
154a1ee5 3005 {
7f307238
IS		 3006 if (abfd->flags & EXEC_P)
3007 mdata->header.filetype = BFD_MACH_O_MH_EXECUTE;
3008 else if (abfd->flags & DYNAMIC)
3009 mdata->header.filetype = BFD_MACH_O_MH_DYLIB;
3010 else
3011 mdata->header.filetype = BFD_MACH_O_MH_OBJECT;
154a1ee5 3012 }
7f307238
IS		 3013
3014 /* If hasn't already been done, flatten sections list, and sort
3015 if/when required. Must be done before the symbol table is adjusted,
3016 since that depends on properly numbered sections. */
3017 if (mdata->nsects == 0 || mdata->sections == NULL)
3018 if (! bfd_mach_o_mangle_sections (abfd, mdata))
3019 return FALSE;
3020
3021 /* Order the symbol table, fill-in/check mach-o specific fields and
3022 partition out any indirect symbols. */
b22161d6 3023 if (!bfd_mach_o_mangle_symbols (abfd))
7f307238
IS		 3024 return FALSE;
3025
c9ffd2ea
TG		 3026 /* Segment commands. */
3027 if (mdata->header.filetype == BFD_MACH_O_MH_OBJECT)
3028 {
3029 /* Only one segment for all the sections. But the segment is
3030 optional if there is no sections. */
3031 nbr_segcmd = (mdata->nsects > 0) ? 1 : 0;
3032 }
3033 else
3034 {
3035 bfd_mach_o_section *prev_sect = NULL;
bbd56171 3036
c9ffd2ea
TG		 3037 /* One pagezero segment and one linkedit segment. */
3038 nbr_segcmd = 2;
bbd56171 3039
c9ffd2ea
TG		 3040 /* Create one segment for associated segment name in sections.
3041 Assume that sections with the same segment name are consecutive. */
3042 for (i = 0; i < mdata->nsects; i++)
3043 {
3044 bfd_mach_o_section *this_sect = mdata->sections[i];
bbd56171 3045
c9ffd2ea
TG		 3046 if (prev_sect == NULL
3047 || strcmp (prev_sect->segname, this_sect->segname) != 0)
3048 {
3049 nbr_segcmd++;
3050 prev_sect = this_sect;
3051 }
3052 }
154a1ee5 3053 }
154a1ee5 3054
c9ffd2ea
TG		 3055 nbr_commands = nbr_segcmd;
3056
3057 /* One command for the symbol table (only if there are symbols. */
7f307238 3058 if (bfd_get_symcount (abfd) > 0)
c9ffd2ea 3059 symtab_idx = nbr_commands++;
c2f09c75 3060
bbd56171
IS		 3061 /* FIXME:
3062 This is a rather crude test for whether we should build a dysymtab. */
3063 if (bfd_mach_o_should_emit_dysymtab ()
3064 && bfd_get_symcount (abfd))
3065 {
bbd56171
IS		 3066 /* If there should be a case where a dysymtab could be emitted without
3067 a symtab (seems improbable), this would need amending. */
c9ffd2ea 3068 dysymtab_idx = nbr_commands++;
bbd56171 3069 }
154a1ee5 3070
c9ffd2ea
TG		 3071 /* Add an entry point command. */
3072 if (mdata->header.filetype == BFD_MACH_O_MH_EXECUTE
3073 && bfd_get_start_address (abfd) != 0)
3074 main_idx = nbr_commands++;
c2f09c75 3075
bbd56171 3076 /* Well, we must have a header, at least. */
c9ffd2ea 3077 mdata->filelen = wide ? BFD_MACH_O_HEADER_64_SIZE : BFD_MACH_O_HEADER_SIZE;
f1bde64c 3078
bbd56171 3079 /* A bit unusual, but no content is valid;
7f307238 3080 as -n empty.s -o empty.o */
c9ffd2ea
TG		 3081 if (nbr_commands == 0)
3082 {
3083 /* Layout commands (well none...) and set headers command fields. */
86eafac0 3084 return bfd_mach_o_layout_commands (mdata);
c9ffd2ea 3085 }
f1bde64c 3086
c9ffd2ea
TG		 3087 /* Create commands for segments (and symtabs), prepend them. */
3088 commands = bfd_zalloc (abfd, nbr_commands * sizeof (bfd_mach_o_load_command));
3089 if (commands == NULL)
7f307238 3090 return FALSE;
c9ffd2ea
TG		 3091 for (i = 0; i < nbr_commands - 1; i++)
3092 commands[i].next = &commands[i + 1];
3093 commands[nbr_commands - 1].next = mdata->first_command;
3094 if (mdata->first_command == NULL)
3095 mdata->last_command = &commands[nbr_commands - 1];
3096 mdata->first_command = &commands[0];
3097
3098 if (mdata->header.filetype == BFD_MACH_O_MH_OBJECT && nbr_segcmd != 0)
3099 {
3100 /* For object file, there is only one segment. */
3101 bfd_mach_o_init_segment (mdata, &commands[0], "", mdata->nsects);
3102 }
3103 else if (nbr_segcmd != 0)
68ffbac6 3104 {
c9ffd2ea 3105 bfd_mach_o_load_command *cmd;
7f307238 3106
c9ffd2ea 3107 BFD_ASSERT (nbr_segcmd >= 2);
7f307238 3108
c9ffd2ea
TG		 3109 /* The pagezero. */
3110 cmd = &commands[0];
3111 bfd_mach_o_init_segment (mdata, cmd, "__PAGEZERO", 0);
3112
3113 /* Segments from sections. */
3114 cmd++;
3115 for (i = 0; i < mdata->nsects;)
7f307238 3116 {
c9ffd2ea
TG		 3117 const char *segname = mdata->sections[i]->segname;
3118 unsigned int nbr_sect = 1;
3119
3120 /* Count number of sections for this segment. */
3121 for (i++; i < mdata->nsects; i++)
3122 if (strcmp (mdata->sections[i]->segname, segname) == 0)
3123 nbr_sect++;
3124 else
3125 break;
3126
3127 bfd_mach_o_init_segment (mdata, cmd, segname, nbr_sect);
3128 cmd++;
7f307238 3129 }
bbd56171 3130
c9ffd2ea
TG		 3131 /* The linkedit. */
3132 bfd_mach_o_init_segment (mdata, cmd, "__LINKEDIT", 0);
7f307238 3133 }
f1bde64c 3134
bbd56171 3135 if (symtab_idx >= 0)
7f307238
IS		 3136 {
3137 /* Init symtab command. */
c9ffd2ea 3138 bfd_mach_o_load_command *cmd = &commands[symtab_idx];
68ffbac6 3139
bbd56171 3140 cmd->type = BFD_MACH_O_LC_SYMTAB;
bbd56171 3141 cmd->type_required = FALSE;
7f307238 3142 }
154a1ee5 3143
bbd56171
IS		 3144 /* If required, setup symtab command, see comment above about the quality
3145 of this test. */
3146 if (dysymtab_idx >= 0)
7f307238 3147 {
c9ffd2ea 3148 bfd_mach_o_load_command *cmd = &commands[dysymtab_idx];
bbd56171 3149
7f307238 3150 cmd->type = BFD_MACH_O_LC_DYSYMTAB;
7f307238 3151 cmd->type_required = FALSE;
c9ffd2ea
TG		 3152 }
3153
3154 /* Create the main command. */
3155 if (main_idx >= 0)
3156 {
3157 bfd_mach_o_load_command *cmd = &commands[main_idx];
7f307238 3158
c9ffd2ea
TG		 3159 cmd->type = BFD_MACH_O_LC_MAIN;
3160 cmd->type_required = TRUE;
3161
3162 cmd->command.main.entryoff = 0;
3163 cmd->command.main.stacksize = 0;
154a1ee5 3164 }
154a1ee5 3165
c9ffd2ea 3166 /* Layout commands. */
86eafac0
NC		 3167 if (! bfd_mach_o_layout_commands (mdata))
3168 return FALSE;
c9ffd2ea 3169
7f307238
IS		 3170 /* So, now we have sized the commands and the filelen set to that.
3171 Now we can build the segment command and set the section file offsets. */
c9ffd2ea
TG		 3172 if (mdata->header.filetype == BFD_MACH_O_MH_OBJECT)
3173 {
3174 for (i = 0; i < nbr_segcmd; i++)
3175 if (!bfd_mach_o_build_obj_seg_command
3176 (abfd, &commands[i].command.segment))
3177 return FALSE;
3178 }
3179 else
3180 {
3181 bfd_vma maxvma = 0;
7f307238 3182
c9ffd2ea
TG		 3183 /* Skip pagezero and linkedit segments. */
3184 for (i = 1; i < nbr_segcmd - 1; i++)
3185 {
3186 bfd_mach_o_segment_command *seg = &commands[i].command.segment;
3187
3188 if (!bfd_mach_o_build_exec_seg_command (abfd, seg))
3189 return FALSE;
3190
3191 if (seg->vmaddr + seg->vmsize > maxvma)
3192 maxvma = seg->vmaddr + seg->vmsize;
3193 }
3194
3195 /* Set the size of __PAGEZERO. */
3196 commands[0].command.segment.vmsize =
3197 commands[1].command.segment.vmaddr;
3198
3199 /* Set the vma and fileoff of __LINKEDIT. */
3200 commands[nbr_segcmd - 1].command.segment.vmaddr = maxvma;
3201 commands[nbr_segcmd - 1].command.segment.fileoff = mdata->filelen;
3202
3203 /* Set entry point (once segments have been laid out). */
3204 if (main_idx >= 0)
3205 commands[main_idx].command.main.entryoff =
3206 bfd_get_start_address (abfd) - commands[1].command.segment.vmaddr;
3207 }
7f307238 3208
154a1ee5
TG		 3209 return TRUE;
3210}
3211
3212/* Set the contents of a section. */
3213
3214bfd_boolean
3215bfd_mach_o_set_section_contents (bfd *abfd,
3216 asection *section,
3217 const void * location,
3218 file_ptr offset,
3219 bfd_size_type count)
3220{
3221 file_ptr pos;
3222
7f307238
IS		 3223 /* Trying to write the first section contents will trigger the creation of
3224 the load commands if they are not already present. */
c9ffd2ea 3225 if (!abfd->output_has_begun && !bfd_mach_o_build_commands (abfd))
154a1ee5
TG		 3226 return FALSE;
3227
3228 if (count == 0)
3229 return TRUE;
3230
3231 pos = section->filepos + offset;
3232 if (bfd_seek (abfd, pos, SEEK_SET) != 0
3233 || bfd_bwrite (location, count, abfd) != count)
3234 return FALSE;
3235
3236 return TRUE;
3237}
3238
3239int
116c20d2 3240bfd_mach_o_sizeof_headers (bfd *a ATTRIBUTE_UNUSED,
a6b96beb 3241 struct bfd_link_info *info ATTRIBUTE_UNUSED)
3af9a47b
NC		 3242{
3243 return 0;
3244}
3245
3246/* Make an empty symbol. This is required only because
3247 bfd_make_section_anyway wants to create a symbol for the section. */
3248
154a1ee5 3249asymbol *
116c20d2 3250bfd_mach_o_make_empty_symbol (bfd *abfd)
3af9a47b 3251{
d3ce72d0
NC		 3252 asymbol *new_symbol;
3253
3254 new_symbol = bfd_zalloc (abfd, sizeof (bfd_mach_o_asymbol));
3255 if (new_symbol == NULL)
3256 return new_symbol;
3257 new_symbol->the_bfd = abfd;
b22161d6 3258 new_symbol->udata.i = SYM_MACHO_FIELDS_UNSET;
d3ce72d0 3259 return new_symbol;
3af9a47b
NC		 3260}
3261
154a1ee5 3262static bfd_boolean
116c20d2 3263bfd_mach_o_read_header (bfd *abfd, bfd_mach_o_header *header)
3af9a47b 3264{
46d1c23b 3265 struct mach_o_header_external raw;
1e8a024a 3266 unsigned int size;
edeb6e24 3267 bfd_vma (*get32) (const void *) = NULL;
3af9a47b 3268
1e8a024a 3269 /* Just read the magic number. */
c2f09c75 3270 if (bfd_seek (abfd, 0, SEEK_SET) != 0
46d1c23b 3271 || bfd_bread (raw.magic, sizeof (raw.magic), abfd) != 4)
154a1ee5 3272 return FALSE;
3af9a47b 3273
46d1c23b 3274 if (bfd_getb32 (raw.magic) == BFD_MACH_O_MH_MAGIC)
3af9a47b
NC		 3275 {
3276 header->byteorder = BFD_ENDIAN_BIG;
154a1ee5 3277 header->magic = BFD_MACH_O_MH_MAGIC;
1e8a024a 3278 header->version = 1;
3af9a47b
NC		 3279 get32 = bfd_getb32;
3280 }
46d1c23b 3281 else if (bfd_getl32 (raw.magic) == BFD_MACH_O_MH_MAGIC)
3af9a47b 3282 {
a95a4550 3283 header->byteorder = BFD_ENDIAN_LITTLE;
154a1ee5 3284 header->magic = BFD_MACH_O_MH_MAGIC;
1e8a024a
TG		 3285 header->version = 1;
3286 get32 = bfd_getl32;
3287 }
46d1c23b 3288 else if (bfd_getb32 (raw.magic) == BFD_MACH_O_MH_MAGIC_64)
1e8a024a
TG		 3289 {
3290 header->byteorder = BFD_ENDIAN_BIG;
154a1ee5 3291 header->magic = BFD_MACH_O_MH_MAGIC_64;
1e8a024a
TG		 3292 header->version = 2;
3293 get32 = bfd_getb32;
3294 }
46d1c23b 3295 else if (bfd_getl32 (raw.magic) == BFD_MACH_O_MH_MAGIC_64)
1e8a024a
TG		 3296 {
3297 header->byteorder = BFD_ENDIAN_LITTLE;
154a1ee5 3298 header->magic = BFD_MACH_O_MH_MAGIC_64;
1e8a024a 3299 header->version = 2;
3af9a47b
NC		 3300 get32 = bfd_getl32;
3301 }
3302 else
3303 {
3304 header->byteorder = BFD_ENDIAN_UNKNOWN;
154a1ee5 3305 return FALSE;
3af9a47b 3306 }
a95a4550 3307
1e8a024a 3308 /* Once the size of the header is known, read the full header. */
c2f09c75 3309 size = mach_o_wide_p (header) ?
154a1ee5 3310 BFD_MACH_O_HEADER_64_SIZE : BFD_MACH_O_HEADER_SIZE;
1e8a024a 3311
c2f09c75 3312 if (bfd_seek (abfd, 0, SEEK_SET) != 0
46d1c23b 3313 || bfd_bread (&raw, size, abfd) != size)
154a1ee5 3314 return FALSE;
1e8a024a 3315
46d1c23b
TG		 3316 header->cputype = (*get32) (raw.cputype);
3317 header->cpusubtype = (*get32) (raw.cpusubtype);
3318 header->filetype = (*get32) (raw.filetype);
3319 header->ncmds = (*get32) (raw.ncmds);
3320 header->sizeofcmds = (*get32) (raw.sizeofcmds);
3321 header->flags = (*get32) (raw.flags);
3af9a47b 3322
c2f09c75 3323 if (mach_o_wide_p (header))
46d1c23b 3324 header->reserved = (*get32) (raw.reserved);
facf03f2
TG		 3325 else
3326 header->reserved = 0;
1e8a024a 3327
154a1ee5 3328 return TRUE;
3af9a47b
NC		 3329}
3330
f1bde64c
TG		 3331bfd_boolean
3332bfd_mach_o_new_section_hook (bfd *abfd, asection *sec)
3333{
3334 bfd_mach_o_section *s;
a4551119 3335 unsigned bfdalign = bfd_get_section_alignment (abfd, sec);
f1bde64c
TG		 3336
3337 s = bfd_mach_o_get_mach_o_section (sec);
3338 if (s == NULL)
3339 {
3340 flagword bfd_flags;
a4551119 3341 static const mach_o_section_name_xlat * xlat;
f1bde64c
TG		 3342
3343 s = (bfd_mach_o_section *) bfd_zalloc (abfd, sizeof (*s));
3344 if (s == NULL)
3345 return FALSE;
3346 sec->used_by_bfd = s;
3347 s->bfdsection = sec;
3348
a4551119
TG		 3349 /* Create the Darwin seg/sect name pair from the bfd name.
3350 If this is a canonical name for which a specific paiting exists
3351 there will also be defined flags, type, attribute and alignment
3352 values. */
3353 xlat = bfd_mach_o_convert_section_name_to_mach_o (abfd, sec, s);
3354 if (xlat != NULL)
3355 {
3356 s->flags = xlat->macho_sectype | xlat->macho_secattr;
68ffbac6 3357 s->align = xlat->sectalign > bfdalign ? xlat->sectalign
a4551119 3358 : bfdalign;
a253d456 3359 (void) bfd_set_section_alignment (abfd, sec, s->align);
a4551119
TG		 3360 bfd_flags = bfd_get_section_flags (abfd, sec);
3361 if (bfd_flags == SEC_NO_FLAGS)
3362 bfd_set_section_flags (abfd, sec, xlat->bfd_flags);
3363 }
f1bde64c 3364 else
a4551119
TG		 3365 /* Create default flags. */
3366 bfd_mach_o_set_section_flags_from_bfd (abfd, sec);
f1bde64c
TG		 3367 }
3368
3369 return _bfd_generic_new_section_hook (abfd, sec);
3370}
3371
3372static void
3373bfd_mach_o_init_section_from_mach_o (bfd *abfd, asection *sec,
3374 unsigned long prot)
3af9a47b 3375{
117ed4f8 3376 flagword flags;
f1bde64c 3377 bfd_mach_o_section *section;
3af9a47b 3378
f1bde64c
TG		 3379 flags = bfd_get_section_flags (abfd, sec);
3380 section = bfd_mach_o_get_mach_o_section (sec);
3af9a47b 3381
a4551119
TG		 3382 /* TODO: see if we should use the xlat system for doing this by
3383 preference and fall back to this for unknown sections. */
3384
8462aec7 3385 if (flags == SEC_NO_FLAGS)
ef17cb22 3386 {
8462aec7
TG		 3387 /* Try to guess flags. */
3388 if (section->flags & BFD_MACH_O_S_ATTR_DEBUG)
3389 flags = SEC_DEBUGGING;
3390 else
3391 {
3392 flags = SEC_ALLOC;
3393 if ((section->flags & BFD_MACH_O_SECTION_TYPE_MASK)
3394 != BFD_MACH_O_S_ZEROFILL)
3395 {
3396 flags |= SEC_LOAD;
3397 if (prot & BFD_MACH_O_PROT_EXECUTE)
3398 flags |= SEC_CODE;
3399 if (prot & BFD_MACH_O_PROT_WRITE)
3400 flags |= SEC_DATA;
3401 else if (prot & BFD_MACH_O_PROT_READ)
3402 flags |= SEC_READONLY;
3403 }
3404 }
ef17cb22 3405 }
15e1c58a
TG		 3406 else
3407 {
8462aec7
TG		 3408 if ((flags & SEC_DEBUGGING) == 0)
3409 flags |= SEC_ALLOC;
15e1c58a 3410 }
8462aec7
TG		 3411
3412 if (section->offset != 0)
3413 flags |= SEC_HAS_CONTENTS;
92bc0e80
TG		 3414 if (section->nreloc != 0)
3415 flags |= SEC_RELOC;
3416
f1bde64c
TG		 3417 bfd_set_section_flags (abfd, sec, flags);
3418
3419 sec->vma = section->addr;
3420 sec->lma = section->addr;
3421 sec->size = section->size;
3422 sec->filepos = section->offset;
3423 sec->alignment_power = section->align;
3424 sec->segment_mark = 0;
3425 sec->reloc_count = section->nreloc;
3426 sec->rel_filepos = section->reloff;
3427}
3428
3429static asection *
3430bfd_mach_o_make_bfd_section (bfd *abfd,
3431 const unsigned char *segname,
3432 const unsigned char *sectname)
3433{
3434 const char *sname;
3435 flagword flags;
a95a4550 3436
f1bde64c
TG		 3437 bfd_mach_o_convert_section_name_to_bfd
3438 (abfd, (const char *)segname, (const char *)sectname, &sname, &flags);
3439 if (sname == NULL)
3440 return NULL;
3af9a47b 3441
f1bde64c 3442 return bfd_make_section_anyway_with_flags (abfd, sname, flags);
3af9a47b
NC		 3443}
3444
f1bde64c 3445static asection *
ab273af8 3446bfd_mach_o_read_section_32 (bfd *abfd,
ab273af8
TG		 3447 unsigned int offset,
3448 unsigned long prot)
3af9a47b 3449{
46d1c23b 3450 struct mach_o_section_32_external raw;
f1bde64c
TG		 3451 asection *sec;
3452 bfd_mach_o_section *section;
3af9a47b 3453
c2f09c75 3454 if (bfd_seek (abfd, offset, SEEK_SET) != 0
46d1c23b 3455 || (bfd_bread (&raw, BFD_MACH_O_SECTION_SIZE, abfd)
c2f09c75 3456 != BFD_MACH_O_SECTION_SIZE))
f1bde64c 3457 return NULL;
a95a4550 3458
5a5cbf72 3459 sec = bfd_mach_o_make_bfd_section (abfd, raw.segname, raw.sectname);
f1bde64c
TG		 3460 if (sec == NULL)
3461 return NULL;
3462
3463 section = bfd_mach_o_get_mach_o_section (sec);
3464 memcpy (section->segname, raw.segname, sizeof (raw.segname));
3465 section->segname[BFD_MACH_O_SEGNAME_SIZE] = 0;
3466 memcpy (section->sectname, raw.sectname, sizeof (raw.sectname));
69499dca 3467 section->sectname[BFD_MACH_O_SECTNAME_SIZE] = 0;
46d1c23b
TG		 3468 section->addr = bfd_h_get_32 (abfd, raw.addr);
3469 section->size = bfd_h_get_32 (abfd, raw.size);
3470 section->offset = bfd_h_get_32 (abfd, raw.offset);
3471 section->align = bfd_h_get_32 (abfd, raw.align);
3472 section->reloff = bfd_h_get_32 (abfd, raw.reloff);
3473 section->nreloc = bfd_h_get_32 (abfd, raw.nreloc);
3474 section->flags = bfd_h_get_32 (abfd, raw.flags);
3475 section->reserved1 = bfd_h_get_32 (abfd, raw.reserved1);
3476 section->reserved2 = bfd_h_get_32 (abfd, raw.reserved2);
1e8a024a 3477 section->reserved3 = 0;
1e8a024a 3478
f1bde64c 3479 bfd_mach_o_init_section_from_mach_o (abfd, sec, prot);
1e8a024a 3480
f1bde64c 3481 return sec;
1e8a024a
TG		 3482}
3483
f1bde64c 3484static asection *
ab273af8 3485bfd_mach_o_read_section_64 (bfd *abfd,
ab273af8
TG		 3486 unsigned int offset,
3487 unsigned long prot)
1e8a024a 3488{
46d1c23b 3489 struct mach_o_section_64_external raw;
f1bde64c
TG		 3490 asection *sec;
3491 bfd_mach_o_section *section;
1e8a024a 3492
c2f09c75 3493 if (bfd_seek (abfd, offset, SEEK_SET) != 0
46d1c23b 3494 || (bfd_bread (&raw, BFD_MACH_O_SECTION_64_SIZE, abfd)
c2f09c75 3495 != BFD_MACH_O_SECTION_64_SIZE))
f1bde64c
TG		 3496 return NULL;
3497
5a5cbf72 3498 sec = bfd_mach_o_make_bfd_section (abfd, raw.segname, raw.sectname);
f1bde64c
TG		 3499 if (sec == NULL)
3500 return NULL;
1e8a024a 3501
f1bde64c
TG		 3502 section = bfd_mach_o_get_mach_o_section (sec);
3503 memcpy (section->segname, raw.segname, sizeof (raw.segname));
3504 section->segname[BFD_MACH_O_SEGNAME_SIZE] = 0;
3505 memcpy (section->sectname, raw.sectname, sizeof (raw.sectname));
69499dca 3506 section->sectname[BFD_MACH_O_SECTNAME_SIZE] = 0;
46d1c23b
TG		 3507 section->addr = bfd_h_get_64 (abfd, raw.addr);
3508 section->size = bfd_h_get_64 (abfd, raw.size);
3509 section->offset = bfd_h_get_32 (abfd, raw.offset);
3510 section->align = bfd_h_get_32 (abfd, raw.align);
3511 section->reloff = bfd_h_get_32 (abfd, raw.reloff);
3512 section->nreloc = bfd_h_get_32 (abfd, raw.nreloc);
3513 section->flags = bfd_h_get_32 (abfd, raw.flags);
3514 section->reserved1 = bfd_h_get_32 (abfd, raw.reserved1);
3515 section->reserved2 = bfd_h_get_32 (abfd, raw.reserved2);
3516 section->reserved3 = bfd_h_get_32 (abfd, raw.reserved3);
3af9a47b 3517
f1bde64c 3518 bfd_mach_o_init_section_from_mach_o (abfd, sec, prot);
3af9a47b 3519
f1bde64c 3520 return sec;
3af9a47b
NC		 3521}
3522
f1bde64c 3523static asection *
ab273af8 3524bfd_mach_o_read_section (bfd *abfd,
ab273af8
TG		 3525 unsigned int offset,
3526 unsigned long prot,
3527 unsigned int wide)
1e8a024a
TG		 3528{
3529 if (wide)
f1bde64c 3530 return bfd_mach_o_read_section_64 (abfd, offset, prot);
1e8a024a 3531 else
f1bde64c 3532 return bfd_mach_o_read_section_32 (abfd, offset, prot);
1e8a024a
TG		 3533}
3534
afbb9e17 3535static bfd_boolean
ab273af8
TG		 3536bfd_mach_o_read_symtab_symbol (bfd *abfd,
3537 bfd_mach_o_symtab_command *sym,
3538 bfd_mach_o_asymbol *s,
3539 unsigned long i)
3af9a47b 3540{
046b007d 3541 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
c2f09c75 3542 unsigned int wide = mach_o_wide_p (&mdata->header);
046b007d
TG		 3543 unsigned int symwidth =
3544 wide ? BFD_MACH_O_NLIST_64_SIZE : BFD_MACH_O_NLIST_SIZE;
92bc0e80 3545 unsigned int symoff = sym->symoff + (i * symwidth);
46d1c23b 3546 struct mach_o_nlist_64_external raw;
3af9a47b
NC		 3547 unsigned char type = -1;
3548 unsigned char section = -1;
3549 short desc = -1;
1e8a024a 3550 symvalue value = -1;
3af9a47b
NC		 3551 unsigned long stroff = -1;
3552 unsigned int symtype = -1;
3553
3554 BFD_ASSERT (sym->strtab != NULL);
3555
c2f09c75 3556 if (bfd_seek (abfd, symoff, SEEK_SET) != 0
46d1c23b 3557 || bfd_bread (&raw, symwidth, abfd) != symwidth)
3af9a47b 3558 {
46d1c23b
TG		 3559 (*_bfd_error_handler)
3560 (_("bfd_mach_o_read_symtab_symbol: unable to read %d bytes at %lu"),
3561 symwidth, (unsigned long) symoff);
afbb9e17 3562 return FALSE;
3af9a47b
NC		 3563 }
3564
46d1c23b
TG		 3565 stroff = bfd_h_get_32 (abfd, raw.n_strx);
3566 type = bfd_h_get_8 (abfd, raw.n_type);
c2f09c75 3567 symtype = type & BFD_MACH_O_N_TYPE;
46d1c23b
TG		 3568 section = bfd_h_get_8 (abfd, raw.n_sect);
3569 desc = bfd_h_get_16 (abfd, raw.n_desc);
1e8a024a 3570 if (wide)
46d1c23b 3571 value = bfd_h_get_64 (abfd, raw.n_value);
1e8a024a 3572 else
46d1c23b 3573 value = bfd_h_get_32 (abfd, raw.n_value);
3af9a47b
NC		 3574
3575 if (stroff >= sym->strsize)
3576 {
46d1c23b
TG		 3577 (*_bfd_error_handler)
3578 (_("bfd_mach_o_read_symtab_symbol: name out of range (%lu >= %lu)"),
3579 (unsigned long) stroff,
3580 (unsigned long) sym->strsize);
afbb9e17 3581 return FALSE;
3af9a47b
NC		 3582 }
3583
92bc0e80
TG		 3584 s->symbol.the_bfd = abfd;
3585 s->symbol.name = sym->strtab + stroff;
3586 s->symbol.value = value;
3587 s->symbol.flags = 0x0;
b22161d6 3588 s->symbol.udata.i = i;
92bc0e80
TG		 3589 s->n_type = type;
3590 s->n_sect = section;
3591 s->n_desc = desc;
3af9a47b
NC		 3592
3593 if (type & BFD_MACH_O_N_STAB)
3594 {
92bc0e80
TG		 3595 s->symbol.flags |= BSF_DEBUGGING;
3596 s->symbol.section = bfd_und_section_ptr;
15e1c58a
TG		 3597 switch (type)
3598 {
3599 case N_FUN:
3600 case N_STSYM:
3601 case N_LCSYM:
3602 case N_BNSYM:
3603 case N_SLINE:
3604 case N_ENSYM:
3605 case N_ECOMM:
3606 case N_ECOML:
3607 case N_GSYM:
3608 if ((section > 0) && (section <= mdata->nsects))
3609 {
92bc0e80
TG		 3610 s->symbol.section = mdata->sections[section - 1]->bfdsection;
3611 s->symbol.value =
3612 s->symbol.value - mdata->sections[section - 1]->addr;
15e1c58a
TG		 3613 }
3614 break;
3615 }
3af9a47b
NC		 3616 }
3617 else
3618 {
b22161d6 3619 if (type & (BFD_MACH_O_N_PEXT | BFD_MACH_O_N_EXT))
92bc0e80 3620 s->symbol.flags |= BSF_GLOBAL;
b22161d6 3621 else
92bc0e80 3622 s->symbol.flags |= BSF_LOCAL;
3af9a47b
NC		 3623
3624 switch (symtype)
3625 {
3626 case BFD_MACH_O_N_UNDF:
c2f09c75 3627 if (type == (BFD_MACH_O_N_UNDF | BFD_MACH_O_N_EXT)
92bc0e80 3628 && s->symbol.value != 0)
c2f09c75
TG		 3629 {
3630 /* A common symbol. */
92bc0e80
TG		 3631 s->symbol.section = bfd_com_section_ptr;
3632 s->symbol.flags = BSF_NO_FLAGS;
c2f09c75
TG		 3633 }
3634 else
92bc0e80
TG		 3635 {
3636 s->symbol.section = bfd_und_section_ptr;
3637 if (s->n_desc & BFD_MACH_O_N_WEAK_REF)
3638 s->symbol.flags |= BSF_WEAK;
3639 }
3af9a47b
NC		 3640 break;
3641 case BFD_MACH_O_N_PBUD:
92bc0e80 3642 s->symbol.section = bfd_und_section_ptr;
3af9a47b
NC		 3643 break;
3644 case BFD_MACH_O_N_ABS:
92bc0e80 3645 s->symbol.section = bfd_abs_section_ptr;
3af9a47b
NC		 3646 break;
3647 case BFD_MACH_O_N_SECT:
3648 if ((section > 0) && (section <= mdata->nsects))
3649 {
92bc0e80
TG		 3650 s->symbol.section = mdata->sections[section - 1]->bfdsection;
3651 s->symbol.value =
3652 s->symbol.value - mdata->sections[section - 1]->addr;
3af9a47b
NC		 3653 }
3654 else
3655 {
3656 /* Mach-O uses 0 to mean "no section"; not an error. */
3657 if (section != 0)
3658 {
4a97a0e5
AM		 3659 (*_bfd_error_handler) (_("bfd_mach_o_read_symtab_symbol: "
3660 "symbol \"%s\" specified invalid section %d (max %lu): setting to undefined"),
3661 s->symbol.name, section, mdata->nsects);
3af9a47b 3662 }
92bc0e80 3663 s->symbol.section = bfd_und_section_ptr;
3af9a47b
NC		 3664 }
3665 break;
3666 case BFD_MACH_O_N_INDR:
0596a831
TG		 3667 /* FIXME: we don't follow the BFD convention as this indirect symbol
3668 won't be followed by the referenced one. This looks harmless
3669 unless we start using the linker. */
3670 s->symbol.flags |= BSF_INDIRECT;
3671 s->symbol.section = bfd_ind_section_ptr;
3672 s->symbol.value = 0;
3af9a47b
NC		 3673 break;
3674 default:
4a97a0e5
AM		 3675 (*_bfd_error_handler) (_("bfd_mach_o_read_symtab_symbol: "
3676 "symbol \"%s\" specified invalid type field 0x%x: setting to undefined"),
3677 s->symbol.name, symtype);
92bc0e80 3678 s->symbol.section = bfd_und_section_ptr;
3af9a47b
NC		 3679 break;
3680 }
3681 }
3682
afbb9e17 3683 return TRUE;
3af9a47b
NC		 3684}
3685
c5012cd8 3686bfd_boolean
ab273af8 3687bfd_mach_o_read_symtab_strtab (bfd *abfd)
3af9a47b 3688{
046b007d
TG		 3689 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
3690 bfd_mach_o_symtab_command *sym = mdata->symtab;
3691
3692 /* Fail if there is no symtab. */
3693 if (sym == NULL)
afbb9e17 3694 return FALSE;
046b007d
TG		 3695
3696 /* Success if already loaded. */
3697 if (sym->strtab)
afbb9e17 3698 return TRUE;
3af9a47b
NC		 3699
3700 if (abfd->flags & BFD_IN_MEMORY)
3701 {
3702 struct bfd_in_memory *b;
3703
3704 b = (struct bfd_in_memory *) abfd->iostream;
3705
3706 if ((sym->stroff + sym->strsize) > b->size)
3707 {
3708 bfd_set_error (bfd_error_file_truncated);
afbb9e17 3709 return FALSE;
3af9a47b 3710 }
f075ee0c 3711 sym->strtab = (char *) b->buffer + sym->stroff;
3af9a47b 3712 }
046b007d 3713 else
3af9a47b 3714 {
e7287c7f 3715 sym->strtab = bfd_alloc (abfd, sym->strsize + 1);
046b007d 3716 if (sym->strtab == NULL)
afbb9e17 3717 return FALSE;
046b007d
TG		 3718
3719 if (bfd_seek (abfd, sym->stroff, SEEK_SET) != 0
afbb9e17 3720 || bfd_bread (sym->strtab, sym->strsize, abfd) != sym->strsize)
046b007d 3721 {
a1165289
NC		 3722 /* PR 17512: file: 10888-1609-0.004. */
3723 bfd_release (abfd, sym->strtab);
3724 sym->strtab = NULL;
046b007d 3725 bfd_set_error (bfd_error_file_truncated);
afbb9e17 3726 return FALSE;
046b007d 3727 }
e7287c7f
NC		 3728 /* Zero terminate the string table. */
3729 sym->strtab[sym->strsize] = 0;
3af9a47b
NC		 3730 }
3731
afbb9e17 3732 return TRUE;
3af9a47b
NC		 3733}
3734
c5012cd8 3735bfd_boolean
ab273af8 3736bfd_mach_o_read_symtab_symbols (bfd *abfd)
3af9a47b 3737{
046b007d
TG		 3738 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
3739 bfd_mach_o_symtab_command *sym = mdata->symtab;
3af9a47b 3740 unsigned long i;
3af9a47b 3741
092d27ff 3742 if (sym == NULL || sym->symbols)
0a9d414a
NC		 3743 /* Return now if there are no symbols or if already loaded. */
3744 return TRUE;
046b007d 3745
64d29018 3746 sym->symbols = bfd_alloc2 (abfd, sym->nsyms, sizeof (bfd_mach_o_asymbol));
3af9a47b
NC		 3747 if (sym->symbols == NULL)
3748 {
4a97a0e5 3749 (*_bfd_error_handler) (_("bfd_mach_o_read_symtab_symbols: unable to allocate memory for symbols"));
64d29018 3750 sym->nsyms = 0;
afbb9e17 3751 return FALSE;
3af9a47b 3752 }
a95a4550 3753
afbb9e17 3754 if (!bfd_mach_o_read_symtab_strtab (abfd))
64d29018 3755 goto fail;
3af9a47b
NC		 3756
3757 for (i = 0; i < sym->nsyms; i++)
64d29018
NC		 3758 if (!bfd_mach_o_read_symtab_symbol (abfd, sym, &sym->symbols[i], i))
3759 goto fail;
a95a4550 3760
afbb9e17 3761 return TRUE;
64d29018
NC		 3762
3763 fail:
3764 bfd_release (abfd, sym->symbols);
3765 sym->symbols = NULL;
3766 sym->nsyms = 0;
3767 return FALSE;
3af9a47b
NC		 3768}
3769
3770static const char *
116c20d2 3771bfd_mach_o_i386_flavour_string (unsigned int flavour)
3af9a47b
NC		 3772{
3773 switch ((int) flavour)
3774 {
15e1c58a
TG		 3775 case BFD_MACH_O_x86_THREAD_STATE32: return "x86_THREAD_STATE32";
3776 case BFD_MACH_O_x86_FLOAT_STATE32: return "x86_FLOAT_STATE32";
3777 case BFD_MACH_O_x86_EXCEPTION_STATE32: return "x86_EXCEPTION_STATE32";
3778 case BFD_MACH_O_x86_THREAD_STATE64: return "x86_THREAD_STATE64";
3779 case BFD_MACH_O_x86_FLOAT_STATE64: return "x86_FLOAT_STATE64";
3780 case BFD_MACH_O_x86_EXCEPTION_STATE64: return "x86_EXCEPTION_STATE64";
3781 case BFD_MACH_O_x86_THREAD_STATE: return "x86_THREAD_STATE";
3782 case BFD_MACH_O_x86_FLOAT_STATE: return "x86_FLOAT_STATE";
3783 case BFD_MACH_O_x86_EXCEPTION_STATE: return "x86_EXCEPTION_STATE";
3784 case BFD_MACH_O_x86_DEBUG_STATE32: return "x86_DEBUG_STATE32";
3785 case BFD_MACH_O_x86_DEBUG_STATE64: return "x86_DEBUG_STATE64";
3786 case BFD_MACH_O_x86_DEBUG_STATE: return "x86_DEBUG_STATE";
b32e07d7 3787 case BFD_MACH_O_x86_THREAD_STATE_NONE: return "x86_THREAD_STATE_NONE";
3af9a47b
NC		 3788 default: return "UNKNOWN";
3789 }
3790}
3791
3792static const char *
116c20d2 3793bfd_mach_o_ppc_flavour_string (unsigned int flavour)
3af9a47b
NC		 3794{
3795 switch ((int) flavour)
3796 {
b32e07d7
TG		 3797 case BFD_MACH_O_PPC_THREAD_STATE: return "PPC_THREAD_STATE";
3798 case BFD_MACH_O_PPC_FLOAT_STATE: return "PPC_FLOAT_STATE";
3799 case BFD_MACH_O_PPC_EXCEPTION_STATE: return "PPC_EXCEPTION_STATE";
3800 case BFD_MACH_O_PPC_VECTOR_STATE: return "PPC_VECTOR_STATE";
3801 case BFD_MACH_O_PPC_THREAD_STATE64: return "PPC_THREAD_STATE64";
3802 case BFD_MACH_O_PPC_EXCEPTION_STATE64: return "PPC_EXCEPTION_STATE64";
3af9a47b
NC		 3803 default: return "UNKNOWN";
3804 }
3805}
3806
452216ab 3807static bfd_boolean
ab273af8 3808bfd_mach_o_read_dylinker (bfd *abfd, bfd_mach_o_load_command *command)
3af9a47b
NC		 3809{
3810 bfd_mach_o_dylinker_command *cmd = &command->command.dylinker;
46d1c23b 3811 struct mach_o_str_command_external raw;
3af9a47b 3812 unsigned int nameoff;
4525c51a 3813 unsigned int namelen;
3af9a47b 3814
46d1c23b
TG		 3815 if (bfd_seek (abfd, command->offset + BFD_MACH_O_LC_SIZE, SEEK_SET) != 0
3816 || bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
452216ab 3817 return FALSE;
3af9a47b 3818
46d1c23b 3819 nameoff = bfd_h_get_32 (abfd, raw.str);
3af9a47b 3820
4525c51a
TG		 3821 cmd->name_offset = nameoff;
3822 namelen = command->len - nameoff;
3823 nameoff += command->offset;
3824 cmd->name_str = bfd_alloc (abfd, namelen);
b32e07d7 3825 if (cmd->name_str == NULL)
452216ab 3826 return FALSE;
4525c51a
TG		 3827 if (bfd_seek (abfd, nameoff, SEEK_SET) != 0
3828 || bfd_bread (cmd->name_str, namelen, abfd) != namelen)
452216ab
TG		 3829 return FALSE;
3830 return TRUE;
3af9a47b
NC		 3831}
3832
452216ab 3833static bfd_boolean
ab273af8 3834bfd_mach_o_read_dylib (bfd *abfd, bfd_mach_o_load_command *command)
3af9a47b
NC		 3835{
3836 bfd_mach_o_dylib_command *cmd = &command->command.dylib;
46d1c23b 3837 struct mach_o_dylib_command_external raw;
3af9a47b 3838 unsigned int nameoff;
4525c51a 3839 unsigned int namelen;
3af9a47b 3840
046b007d
TG		 3841 switch (command->type)
3842 {
3843 case BFD_MACH_O_LC_LOAD_DYLIB:
fbe383b9 3844 case BFD_MACH_O_LC_LAZY_LOAD_DYLIB:
046b007d 3845 case BFD_MACH_O_LC_LOAD_WEAK_DYLIB:
046b007d 3846 case BFD_MACH_O_LC_ID_DYLIB:
046b007d 3847 case BFD_MACH_O_LC_REEXPORT_DYLIB:
73017762 3848 case BFD_MACH_O_LC_LOAD_UPWARD_DYLIB:
046b007d
TG		 3849 break;
3850 default:
b32e07d7 3851 BFD_FAIL ();
452216ab 3852 return FALSE;
046b007d 3853 }
3af9a47b 3854
46d1c23b
TG		 3855 if (bfd_seek (abfd, command->offset + BFD_MACH_O_LC_SIZE, SEEK_SET) != 0
3856 || bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
452216ab 3857 return FALSE;
3af9a47b 3858
46d1c23b
TG		 3859 nameoff = bfd_h_get_32 (abfd, raw.name);
3860 cmd->timestamp = bfd_h_get_32 (abfd, raw.timestamp);
3861 cmd->current_version = bfd_h_get_32 (abfd, raw.current_version);
3862 cmd->compatibility_version = bfd_h_get_32 (abfd, raw.compatibility_version);
3af9a47b
NC		 3863
3864 cmd->name_offset = command->offset + nameoff;
4525c51a
TG		 3865 namelen = command->len - nameoff;
3866 cmd->name_str = bfd_alloc (abfd, namelen);
b32e07d7 3867 if (cmd->name_str == NULL)
452216ab 3868 return FALSE;
b32e07d7 3869 if (bfd_seek (abfd, cmd->name_offset, SEEK_SET) != 0
4525c51a 3870 || bfd_bread (cmd->name_str, namelen, abfd) != namelen)
452216ab
TG		 3871 return FALSE;
3872 return TRUE;
3af9a47b
NC		 3873}
3874
452216ab 3875static bfd_boolean
7a79c514
TG		 3876bfd_mach_o_read_prebound_dylib (bfd *abfd,
3877 bfd_mach_o_load_command *command)
3af9a47b 3878{
7a79c514
TG		 3879 bfd_mach_o_prebound_dylib_command *cmd = &command->command.prebound_dylib;
3880 struct mach_o_prebound_dylib_command_external raw;
3881 unsigned int nameoff;
3882 unsigned int modoff;
3883 unsigned int str_len;
3884 unsigned char *str;
3885
3886 if (bfd_seek (abfd, command->offset + BFD_MACH_O_LC_SIZE, SEEK_SET) != 0
3887 || bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
452216ab 3888 return FALSE;
7a79c514
TG		 3889
3890 nameoff = bfd_h_get_32 (abfd, raw.name);
3891 modoff = bfd_h_get_32 (abfd, raw.linked_modules);
3892 if (nameoff > command->len || modoff > command->len)
452216ab 3893 return FALSE;
7a79c514
TG		 3894
3895 str_len = command->len - sizeof (raw);
3896 str = bfd_alloc (abfd, str_len);
3897 if (str == NULL)
452216ab 3898 return FALSE;
7a79c514 3899 if (bfd_bread (str, str_len, abfd) != str_len)
452216ab 3900 return FALSE;
7a79c514
TG		 3901
3902 cmd->name_offset = command->offset + nameoff;
3903 cmd->nmodules = bfd_h_get_32 (abfd, raw.nmodules);
3904 cmd->linked_modules_offset = command->offset + modoff;
3905
3906 cmd->name_str = (char *)str + nameoff - (sizeof (raw) + BFD_MACH_O_LC_SIZE);
3907 cmd->linked_modules = str + modoff - (sizeof (raw) + BFD_MACH_O_LC_SIZE);
452216ab 3908 return TRUE;
7a79c514
TG		 3909}
3910
452216ab 3911static bfd_boolean
7a79c514
TG		 3912bfd_mach_o_read_prebind_cksum (bfd *abfd,
3913 bfd_mach_o_load_command *command)
3914{
3915 bfd_mach_o_prebind_cksum_command *cmd = &command->command.prebind_cksum;
3916 struct mach_o_prebind_cksum_command_external raw;
3af9a47b 3917
7a79c514
TG		 3918 if (bfd_seek (abfd, command->offset + BFD_MACH_O_LC_SIZE, SEEK_SET) != 0
3919 || bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
452216ab 3920 return FALSE;
7a79c514
TG		 3921
3922 cmd->cksum = bfd_get_32 (abfd, raw.cksum);
452216ab 3923 return TRUE;
7a79c514
TG		 3924}
3925
452216ab 3926static bfd_boolean
7a79c514
TG		 3927bfd_mach_o_read_twolevel_hints (bfd *abfd,
3928 bfd_mach_o_load_command *command)
3929{
3930 bfd_mach_o_twolevel_hints_command *cmd = &command->command.twolevel_hints;
3931 struct mach_o_twolevel_hints_command_external raw;
3932
3933 if (bfd_seek (abfd, command->offset + BFD_MACH_O_LC_SIZE, SEEK_SET) != 0
3934 || bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
452216ab 3935 return FALSE;
7a79c514
TG		 3936
3937 cmd->offset = bfd_get_32 (abfd, raw.offset);
3938 cmd->nhints = bfd_get_32 (abfd, raw.nhints);
452216ab 3939 return TRUE;
3af9a47b
NC		 3940}
3941
452216ab 3942static bfd_boolean
9f4a5bd1
TG		 3943bfd_mach_o_read_fvmlib (bfd *abfd, bfd_mach_o_load_command *command)
3944{
3945 bfd_mach_o_fvmlib_command *fvm = &command->command.fvmlib;
3946 struct mach_o_fvmlib_command_external raw;
3947 unsigned int nameoff;
4525c51a 3948 unsigned int namelen;
9f4a5bd1
TG		 3949
3950 if (bfd_seek (abfd, command->offset + BFD_MACH_O_LC_SIZE, SEEK_SET) != 0
3951 || bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
452216ab 3952 return FALSE;
9f4a5bd1
TG		 3953
3954 nameoff = bfd_h_get_32 (abfd, raw.name);
3955 fvm->minor_version = bfd_h_get_32 (abfd, raw.minor_version);
3956 fvm->header_addr = bfd_h_get_32 (abfd, raw.header_addr);
3957
3958 fvm->name_offset = command->offset + nameoff;
4525c51a
TG		 3959 namelen = command->len - nameoff;
3960 fvm->name_str = bfd_alloc (abfd, namelen);
9f4a5bd1 3961 if (fvm->name_str == NULL)
452216ab 3962 return FALSE;
9f4a5bd1 3963 if (bfd_seek (abfd, fvm->name_offset, SEEK_SET) != 0
4525c51a 3964 || bfd_bread (fvm->name_str, namelen, abfd) != namelen)
452216ab
TG		 3965 return FALSE;
3966 return TRUE;
9f4a5bd1
TG		 3967}
3968
452216ab 3969static bfd_boolean
ab273af8 3970bfd_mach_o_read_thread (bfd *abfd, bfd_mach_o_load_command *command)
3af9a47b 3971{
b32e07d7 3972 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
3af9a47b 3973 bfd_mach_o_thread_command *cmd = &command->command.thread;
92bc0e80 3974 unsigned int offset;
3af9a47b
NC		 3975 unsigned int nflavours;
3976 unsigned int i;
3977
3978 BFD_ASSERT ((command->type == BFD_MACH_O_LC_THREAD)
3979 || (command->type == BFD_MACH_O_LC_UNIXTHREAD));
3980
b32e07d7 3981 /* Count the number of threads. */
3af9a47b
NC		 3982 offset = 8;
3983 nflavours = 0;
3984 while (offset != command->len)
3985 {
46d1c23b
TG		 3986 struct mach_o_thread_command_external raw;
3987
3af9a47b 3988 if (offset >= command->len)
452216ab 3989 return FALSE;
3af9a47b 3990
c2f09c75 3991 if (bfd_seek (abfd, command->offset + offset, SEEK_SET) != 0
46d1c23b 3992 || bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
452216ab 3993 return FALSE;
3af9a47b 3994
46d1c23b 3995 offset += sizeof (raw) + bfd_h_get_32 (abfd, raw.count) * 4;
3af9a47b
NC		 3996 nflavours++;
3997 }
3998
b32e07d7 3999 /* Allocate threads. */
64d29018
NC		 4000 cmd->flavours = bfd_alloc2
4001 (abfd, nflavours, sizeof (bfd_mach_o_thread_flavour));
3af9a47b 4002 if (cmd->flavours == NULL)
452216ab 4003 return FALSE;
3af9a47b
NC		 4004 cmd->nflavours = nflavours;
4005
4006 offset = 8;
4007 nflavours = 0;
4008 while (offset != command->len)
4009 {
46d1c23b
TG		 4010 struct mach_o_thread_command_external raw;
4011
3af9a47b 4012 if (offset >= command->len)
452216ab 4013 return FALSE;
3af9a47b
NC		 4014
4015 if (nflavours >= cmd->nflavours)
452216ab 4016 return FALSE;
3af9a47b 4017
c2f09c75 4018 if (bfd_seek (abfd, command->offset + offset, SEEK_SET) != 0
46d1c23b 4019 || bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
452216ab 4020 return FALSE;
3af9a47b 4021
46d1c23b
TG		 4022 cmd->flavours[nflavours].flavour = bfd_h_get_32 (abfd, raw.flavour);
4023 cmd->flavours[nflavours].offset = command->offset + offset + sizeof (raw);
4024 cmd->flavours[nflavours].size = bfd_h_get_32 (abfd, raw.count) * 4;
4025 offset += cmd->flavours[nflavours].size + sizeof (raw);
3af9a47b
NC		 4026 nflavours++;
4027 }
4028
4029 for (i = 0; i < nflavours; i++)
4030 {
4031 asection *bfdsec;
4032 unsigned int snamelen;
4033 char *sname;
4034 const char *flavourstr;
4035 const char *prefix = "LC_THREAD";
a95a4550
AM		 4036 unsigned int j = 0;
4037
3af9a47b
NC		 4038 switch (mdata->header.cputype)
4039 {
4040 case BFD_MACH_O_CPU_TYPE_POWERPC:
1e8a024a 4041 case BFD_MACH_O_CPU_TYPE_POWERPC_64:
707e555b
TG		 4042 flavourstr =
4043 bfd_mach_o_ppc_flavour_string (cmd->flavours[i].flavour);
3af9a47b
NC		 4044 break;
4045 case BFD_MACH_O_CPU_TYPE_I386:
1e8a024a 4046 case BFD_MACH_O_CPU_TYPE_X86_64:
707e555b
TG		 4047 flavourstr =
4048 bfd_mach_o_i386_flavour_string (cmd->flavours[i].flavour);
3af9a47b
NC		 4049 break;
4050 default:
4051 flavourstr = "UNKNOWN_ARCHITECTURE";
4052 break;
4053 }
a95a4550 4054
3af9a47b 4055 snamelen = strlen (prefix) + 1 + 20 + 1 + strlen (flavourstr) + 1;
116c20d2 4056 sname = bfd_alloc (abfd, snamelen);
3af9a47b 4057 if (sname == NULL)
452216ab 4058 return FALSE;
3af9a47b
NC		 4059
4060 for (;;)
4061 {
a95a4550
AM		 4062 sprintf (sname, "%s.%s.%u", prefix, flavourstr, j);
4063 if (bfd_get_section_by_name (abfd, sname) == NULL)
3af9a47b 4064 break;
a95a4550 4065 j++;
3af9a47b
NC		 4066 }
4067
117ed4f8 4068 bfdsec = bfd_make_section_with_flags (abfd, sname, SEC_HAS_CONTENTS);
a95a4550 4069
3af9a47b
NC		 4070 bfdsec->vma = 0;
4071 bfdsec->lma = 0;
eea6121a 4072 bfdsec->size = cmd->flavours[i].size;
3af9a47b
NC		 4073 bfdsec->filepos = cmd->flavours[i].offset;
4074 bfdsec->alignment_power = 0x0;
3af9a47b
NC		 4075
4076 cmd->section = bfdsec;
4077 }
4078
452216ab 4079 return TRUE;
3af9a47b
NC		 4080}
4081
452216ab 4082static bfd_boolean
ab273af8 4083bfd_mach_o_read_dysymtab (bfd *abfd, bfd_mach_o_load_command *command)
3af9a47b 4084{
046b007d 4085 bfd_mach_o_dysymtab_command *cmd = &command->command.dysymtab;
b32e07d7 4086 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
3af9a47b
NC		 4087
4088 BFD_ASSERT (command->type == BFD_MACH_O_LC_DYSYMTAB);
4089
46d1c23b
TG		 4090 {
4091 struct mach_o_dysymtab_command_external raw;
4092
4093 if (bfd_seek (abfd, command->offset + BFD_MACH_O_LC_SIZE, SEEK_SET) != 0
4094 || bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
452216ab 4095 return FALSE;
3af9a47b 4096
46d1c23b
TG		 4097 cmd->ilocalsym = bfd_h_get_32 (abfd, raw.ilocalsym);
4098 cmd->nlocalsym = bfd_h_get_32 (abfd, raw.nlocalsym);
4099 cmd->iextdefsym = bfd_h_get_32 (abfd, raw.iextdefsym);
4100 cmd->nextdefsym = bfd_h_get_32 (abfd, raw.nextdefsym);
4101 cmd->iundefsym = bfd_h_get_32 (abfd, raw.iundefsym);
4102 cmd->nundefsym = bfd_h_get_32 (abfd, raw.nundefsym);
4103 cmd->tocoff = bfd_h_get_32 (abfd, raw.tocoff);
4104 cmd->ntoc = bfd_h_get_32 (abfd, raw.ntoc);
4105 cmd->modtaboff = bfd_h_get_32 (abfd, raw.modtaboff);
4106 cmd->nmodtab = bfd_h_get_32 (abfd, raw.nmodtab);
4107 cmd->extrefsymoff = bfd_h_get_32 (abfd, raw.extrefsymoff);
4108 cmd->nextrefsyms = bfd_h_get_32 (abfd, raw.nextrefsyms);
4109 cmd->indirectsymoff = bfd_h_get_32 (abfd, raw.indirectsymoff);
4110 cmd->nindirectsyms = bfd_h_get_32 (abfd, raw.nindirectsyms);
4111 cmd->extreloff = bfd_h_get_32 (abfd, raw.extreloff);
4112 cmd->nextrel = bfd_h_get_32 (abfd, raw.nextrel);
4113 cmd->locreloff = bfd_h_get_32 (abfd, raw.locreloff);
4114 cmd->nlocrel = bfd_h_get_32 (abfd, raw.nlocrel);
4115 }
046b007d
TG		 4116
4117 if (cmd->nmodtab != 0)
4118 {
046b007d
TG		 4119 unsigned int i;
4120 int wide = bfd_mach_o_wide_p (abfd);
4121 unsigned int module_len = wide ? 56 : 52;
4122
4123 cmd->dylib_module =
64d29018 4124 bfd_alloc2 (abfd, cmd->nmodtab, sizeof (bfd_mach_o_dylib_module));
046b007d 4125 if (cmd->dylib_module == NULL)
452216ab 4126 return FALSE;
046b007d
TG		 4127
4128 if (bfd_seek (abfd, cmd->modtaboff, SEEK_SET) != 0)
452216ab 4129 return FALSE;
046b007d
TG		 4130
4131 for (i = 0; i < cmd->nmodtab; i++)
4132 {
4133 bfd_mach_o_dylib_module *module = &cmd->dylib_module[i];
4134 unsigned long v;
46d1c23b 4135 unsigned char buf[56];
046b007d 4136
91d6fa6a 4137 if (bfd_bread ((void *) buf, module_len, abfd) != module_len)
452216ab 4138 return FALSE;
046b007d
TG		 4139
4140 module->module_name_idx = bfd_h_get_32 (abfd, buf + 0);
4141 module->iextdefsym = bfd_h_get_32 (abfd, buf + 4);
4142 module->nextdefsym = bfd_h_get_32 (abfd, buf + 8);
4143 module->irefsym = bfd_h_get_32 (abfd, buf + 12);
4144 module->nrefsym = bfd_h_get_32 (abfd, buf + 16);
4145 module->ilocalsym = bfd_h_get_32 (abfd, buf + 20);
4146 module->nlocalsym = bfd_h_get_32 (abfd, buf + 24);
4147 module->iextrel = bfd_h_get_32 (abfd, buf + 28);
4148 module->nextrel = bfd_h_get_32 (abfd, buf + 32);
4149 v = bfd_h_get_32 (abfd, buf +36);
4150 module->iinit = v & 0xffff;
4151 module->iterm = (v >> 16) & 0xffff;
4152 v = bfd_h_get_32 (abfd, buf + 40);
4153 module->ninit = v & 0xffff;
4154 module->nterm = (v >> 16) & 0xffff;
4155 if (wide)
4156 {
4157 module->objc_module_info_size = bfd_h_get_32 (abfd, buf + 44);
4158 module->objc_module_info_addr = bfd_h_get_64 (abfd, buf + 48);
4159 }
4160 else
4161 {
4162 module->objc_module_info_addr = bfd_h_get_32 (abfd, buf + 44);
4163 module->objc_module_info_size = bfd_h_get_32 (abfd, buf + 48);
4164 }
4165 }
4166 }
afbb9e17 4167
046b007d
TG		 4168 if (cmd->ntoc != 0)
4169 {
64d29018 4170 unsigned long i;
046b007d 4171
64d29018
NC		 4172 cmd->dylib_toc = bfd_alloc2
4173 (abfd, cmd->ntoc, sizeof (bfd_mach_o_dylib_table_of_content));
046b007d 4174 if (cmd->dylib_toc == NULL)
452216ab 4175 return FALSE;
046b007d
TG		 4176
4177 if (bfd_seek (abfd, cmd->tocoff, SEEK_SET) != 0)
452216ab 4178 return FALSE;
046b007d
TG		 4179
4180 for (i = 0; i < cmd->ntoc; i++)
4181 {
46d1c23b 4182 struct mach_o_dylib_table_of_contents_external raw;
046b007d
TG		 4183 bfd_mach_o_dylib_table_of_content *toc = &cmd->dylib_toc[i];
4184
46d1c23b 4185 if (bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
452216ab 4186 return FALSE;
046b007d 4187
46d1c23b
TG		 4188 toc->symbol_index = bfd_h_get_32 (abfd, raw.symbol_index);
4189 toc->module_index = bfd_h_get_32 (abfd, raw.module_index);
046b007d
TG		 4190 }
4191 }
4192
4193 if (cmd->nindirectsyms != 0)
4194 {
046b007d
TG		 4195 unsigned int i;
4196
64d29018
NC		 4197 cmd->indirect_syms = bfd_alloc2
4198 (abfd, cmd->nindirectsyms, sizeof (unsigned int));
046b007d 4199 if (cmd->indirect_syms == NULL)
452216ab 4200 return FALSE;
046b007d
TG		 4201
4202 if (bfd_seek (abfd, cmd->indirectsymoff, SEEK_SET) != 0)
452216ab 4203 return FALSE;
046b007d
TG		 4204
4205 for (i = 0; i < cmd->nindirectsyms; i++)
4206 {
46d1c23b 4207 unsigned char raw[4];
046b007d
TG		 4208 unsigned int *is = &cmd->indirect_syms[i];
4209
46d1c23b 4210 if (bfd_bread (raw, sizeof (raw), abfd) != sizeof (raw))
452216ab 4211 return FALSE;
046b007d 4212
46d1c23b 4213 *is = bfd_h_get_32 (abfd, raw);
046b007d
TG		 4214 }
4215 }
4216
4217 if (cmd->nextrefsyms != 0)
4218 {
046b007d
TG		 4219 unsigned long v;
4220 unsigned int i;
4221
64d29018
NC		 4222 cmd->ext_refs = bfd_alloc2
4223 (abfd, cmd->nextrefsyms, sizeof (bfd_mach_o_dylib_reference));
046b007d 4224 if (cmd->ext_refs == NULL)
452216ab 4225 return FALSE;
046b007d
TG		 4226
4227 if (bfd_seek (abfd, cmd->extrefsymoff, SEEK_SET) != 0)
452216ab 4228 return FALSE;
046b007d
TG		 4229
4230 for (i = 0; i < cmd->nextrefsyms; i++)
4231 {
46d1c23b 4232 unsigned char raw[4];
046b007d
TG		 4233 bfd_mach_o_dylib_reference *ref = &cmd->ext_refs[i];
4234
46d1c23b 4235 if (bfd_bread (raw, sizeof (raw), abfd) != sizeof (raw))
452216ab 4236 return FALSE;
046b007d 4237
b32e07d7
TG		 4238 /* Fields isym and flags are written as bit-fields, thus we need
4239 a specific processing for endianness. */
46d1c23b 4240 v = bfd_h_get_32 (abfd, raw);
b32e07d7
TG		 4241 if (bfd_big_endian (abfd))
4242 {
4243 ref->isym = (v >> 8) & 0xffffff;
4244 ref->flags = v & 0xff;
4245 }
4246 else
4247 {
4248 ref->isym = v & 0xffffff;
4249 ref->flags = (v >> 24) & 0xff;
4250 }
046b007d
TG		 4251 }
4252 }
3af9a47b 4253
b32e07d7 4254 if (mdata->dysymtab)
452216ab 4255 return FALSE;
b32e07d7
TG		 4256 mdata->dysymtab = cmd;
4257
452216ab 4258 return TRUE;
3af9a47b
NC		 4259}
4260
452216ab 4261static bfd_boolean
ab273af8 4262bfd_mach_o_read_symtab (bfd *abfd, bfd_mach_o_load_command *command)
3af9a47b 4263{
046b007d
TG		 4264 bfd_mach_o_symtab_command *symtab = &command->command.symtab;
4265 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
46d1c23b 4266 struct mach_o_symtab_command_external raw;
3af9a47b
NC		 4267
4268 BFD_ASSERT (command->type == BFD_MACH_O_LC_SYMTAB);
4269
46d1c23b
TG		 4270 if (bfd_seek (abfd, command->offset + BFD_MACH_O_LC_SIZE, SEEK_SET) != 0
4271 || bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
452216ab 4272 return FALSE;
a95a4550 4273
46d1c23b
TG		 4274 symtab->symoff = bfd_h_get_32 (abfd, raw.symoff);
4275 symtab->nsyms = bfd_h_get_32 (abfd, raw.nsyms);
4276 symtab->stroff = bfd_h_get_32 (abfd, raw.stroff);
4277 symtab->strsize = bfd_h_get_32 (abfd, raw.strsize);
046b007d
TG		 4278 symtab->symbols = NULL;
4279 symtab->strtab = NULL;
3af9a47b 4280
046b007d 4281 if (symtab->nsyms != 0)
15e1c58a
TG		 4282 abfd->flags |= HAS_SYMS;
4283
046b007d 4284 if (mdata->symtab)
452216ab 4285 return FALSE;
046b007d 4286 mdata->symtab = symtab;
452216ab 4287 return TRUE;
3af9a47b
NC		 4288}
4289
452216ab 4290static bfd_boolean
ab273af8 4291bfd_mach_o_read_uuid (bfd *abfd, bfd_mach_o_load_command *command)
15e1c58a
TG		 4292{
4293 bfd_mach_o_uuid_command *cmd = &command->command.uuid;
15e1c58a
TG		 4294
4295 BFD_ASSERT (command->type == BFD_MACH_O_LC_UUID);
4296
46d1c23b
TG		 4297 if (bfd_seek (abfd, command->offset + BFD_MACH_O_LC_SIZE, SEEK_SET) != 0
4298 || bfd_bread (cmd->uuid, 16, abfd) != 16)
452216ab 4299 return FALSE;
15e1c58a 4300
452216ab 4301 return TRUE;
15e1c58a
TG		 4302}
4303
452216ab 4304static bfd_boolean
ab273af8 4305bfd_mach_o_read_linkedit (bfd *abfd, bfd_mach_o_load_command *command)
046b007d
TG		 4306{
4307 bfd_mach_o_linkedit_command *cmd = &command->command.linkedit;
46d1c23b 4308 struct mach_o_linkedit_data_command_external raw;
046b007d 4309
46d1c23b
TG		 4310 if (bfd_seek (abfd, command->offset + BFD_MACH_O_LC_SIZE, SEEK_SET) != 0
4311 || bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
452216ab 4312 return FALSE;
046b007d 4313
46d1c23b
TG		 4314 cmd->dataoff = bfd_get_32 (abfd, raw.dataoff);
4315 cmd->datasize = bfd_get_32 (abfd, raw.datasize);
452216ab 4316 return TRUE;
046b007d
TG		 4317}
4318
452216ab 4319static bfd_boolean
ab273af8 4320bfd_mach_o_read_str (bfd *abfd, bfd_mach_o_load_command *command)
046b007d
TG		 4321{
4322 bfd_mach_o_str_command *cmd = &command->command.str;
46d1c23b 4323 struct mach_o_str_command_external raw;
046b007d
TG		 4324 unsigned long off;
4325
46d1c23b
TG		 4326 if (bfd_seek (abfd, command->offset + BFD_MACH_O_LC_SIZE, SEEK_SET) != 0
4327 || bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
452216ab 4328 return FALSE;
046b007d 4329
46d1c23b 4330 off = bfd_get_32 (abfd, raw.str);
046b007d
TG		 4331 cmd->stroff = command->offset + off;
4332 cmd->str_len = command->len - off;
4333 cmd->str = bfd_alloc (abfd, cmd->str_len);
4334 if (cmd->str == NULL)
452216ab 4335 return FALSE;
046b007d 4336 if (bfd_seek (abfd, cmd->stroff, SEEK_SET) != 0
91d6fa6a 4337 || bfd_bread ((void *) cmd->str, cmd->str_len, abfd) != cmd->str_len)
452216ab
TG		 4338 return FALSE;
4339 return TRUE;
046b007d
TG		 4340}
4341
c9ffd2ea
TG		 4342static unsigned char *
4343bfd_mach_o_alloc_and_read (bfd *abfd, unsigned int off, unsigned int size)
4344{
4345 unsigned char *buf;
4346
4347 buf = bfd_alloc (abfd, size);
4348 if (buf == NULL)
4349 return NULL;
4350 if (bfd_seek (abfd, off, SEEK_SET) != 0
4351 || bfd_bread (buf, size, abfd) != size)
4352 return NULL;
4353 return buf;
4354}
4355
4356static bfd_boolean
4357bfd_mach_o_read_dyld_content (bfd *abfd, bfd_mach_o_dyld_info_command *cmd)
4358{
4359 /* Read rebase content. */
4360 if (cmd->rebase_content == NULL && cmd->rebase_size != 0)
4361 {
4362 cmd->rebase_content =
4363 bfd_mach_o_alloc_and_read (abfd, cmd->rebase_off, cmd->rebase_size);
4364 if (cmd->rebase_content == NULL)
4365 return FALSE;
4366 }
4367
4368 /* Read bind content. */
4369 if (cmd->bind_content == NULL && cmd->bind_size != 0)
4370 {
4371 cmd->bind_content =
4372 bfd_mach_o_alloc_and_read (abfd, cmd->bind_off, cmd->bind_size);
4373 if (cmd->bind_content == NULL)
4374 return FALSE;
4375 }
4376
4377 /* Read weak bind content. */
4378 if (cmd->weak_bind_content == NULL && cmd->weak_bind_size != 0)
4379 {
4380 cmd->weak_bind_content = bfd_mach_o_alloc_and_read
4381 (abfd, cmd->weak_bind_off, cmd->weak_bind_size);
4382 if (cmd->weak_bind_content == NULL)
4383 return FALSE;
4384 }
4385
4386 /* Read lazy bind content. */
4387 if (cmd->lazy_bind_content == NULL && cmd->lazy_bind_size != 0)
4388 {
4389 cmd->lazy_bind_content = bfd_mach_o_alloc_and_read
4390 (abfd, cmd->lazy_bind_off, cmd->lazy_bind_size);
4391 if (cmd->lazy_bind_content == NULL)
4392 return FALSE;
4393 }
4394
4395 /* Read export content. */
4396 if (cmd->export_content == NULL && cmd->export_size != 0)
4397 {
4398 cmd->export_content = bfd_mach_o_alloc_and_read
4399 (abfd, cmd->export_off, cmd->export_size);
4400 if (cmd->export_content == NULL)
4401 return FALSE;
4402 }
4403
4404 return TRUE;
4405}
4406
452216ab 4407static bfd_boolean
ab273af8 4408bfd_mach_o_read_dyld_info (bfd *abfd, bfd_mach_o_load_command *command)
ad86f1fb
TG		 4409{
4410 bfd_mach_o_dyld_info_command *cmd = &command->command.dyld_info;
46d1c23b 4411 struct mach_o_dyld_info_command_external raw;
ad86f1fb 4412
46d1c23b
TG		 4413 if (bfd_seek (abfd, command->offset + BFD_MACH_O_LC_SIZE, SEEK_SET) != 0
4414 || bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
452216ab 4415 return FALSE;
ad86f1fb 4416
46d1c23b
TG		 4417 cmd->rebase_off = bfd_get_32 (abfd, raw.rebase_off);
4418 cmd->rebase_size = bfd_get_32 (abfd, raw.rebase_size);
c9ffd2ea 4419 cmd->rebase_content = NULL;
46d1c23b
TG		 4420 cmd->bind_off = bfd_get_32 (abfd, raw.bind_off);
4421 cmd->bind_size = bfd_get_32 (abfd, raw.bind_size);
c9ffd2ea 4422 cmd->bind_content = NULL;
46d1c23b
TG		 4423 cmd->weak_bind_off = bfd_get_32 (abfd, raw.weak_bind_off);
4424 cmd->weak_bind_size = bfd_get_32 (abfd, raw.weak_bind_size);
c9ffd2ea 4425 cmd->weak_bind_content = NULL;
46d1c23b
TG		 4426 cmd->lazy_bind_off = bfd_get_32 (abfd, raw.lazy_bind_off);
4427 cmd->lazy_bind_size = bfd_get_32 (abfd, raw.lazy_bind_size);
c9ffd2ea 4428 cmd->lazy_bind_content = NULL;
46d1c23b
TG		 4429 cmd->export_off = bfd_get_32 (abfd, raw.export_off);
4430 cmd->export_size = bfd_get_32 (abfd, raw.export_size);
c9ffd2ea 4431 cmd->export_content = NULL;
452216ab 4432 return TRUE;
ad86f1fb
TG		 4433}
4434
edbdea0e
TG		 4435static bfd_boolean
4436bfd_mach_o_read_version_min (bfd *abfd, bfd_mach_o_load_command *command)
4437{
4438 bfd_mach_o_version_min_command *cmd = &command->command.version_min;
4439 struct mach_o_version_min_command_external raw;
4440 unsigned int ver;
4441
4442 if (bfd_seek (abfd, command->offset + BFD_MACH_O_LC_SIZE, SEEK_SET) != 0
4443 || bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
4444 return FALSE;
4445
4446 ver = bfd_get_32 (abfd, raw.version);
4447 cmd->rel = ver >> 16;
4448 cmd->maj = ver >> 8;
4449 cmd->min = ver;
4450 cmd->reserved = bfd_get_32 (abfd, raw.reserved);
4451 return TRUE;
4452}
4453
fc55a902
TG		 4454static bfd_boolean
4455bfd_mach_o_read_encryption_info (bfd *abfd, bfd_mach_o_load_command *command)
4456{
4457 bfd_mach_o_encryption_info_command *cmd = &command->command.encryption_info;
4458 struct mach_o_encryption_info_command_external raw;
4459
4460 if (bfd_seek (abfd, command->offset + BFD_MACH_O_LC_SIZE, SEEK_SET) != 0
4461 || bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
4462 return FALSE;
4463
4464 cmd->cryptoff = bfd_get_32 (abfd, raw.cryptoff);
4465 cmd->cryptsize = bfd_get_32 (abfd, raw.cryptsize);
4466 cmd->cryptid = bfd_get_32 (abfd, raw.cryptid);
4467 return TRUE;
4468}
4469
1778ad74
TG		 4470static bfd_boolean
4471bfd_mach_o_read_main (bfd *abfd, bfd_mach_o_load_command *command)
4472{
4473 bfd_mach_o_main_command *cmd = &command->command.main;
4474 struct mach_o_entry_point_command_external raw;
4475
4476 if (bfd_seek (abfd, command->offset + BFD_MACH_O_LC_SIZE, SEEK_SET) != 0
4477 || bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
4478 return FALSE;
4479
4480 cmd->entryoff = bfd_get_64 (abfd, raw.entryoff);
4481 cmd->stacksize = bfd_get_64 (abfd, raw.stacksize);
4482 return TRUE;
4483}
4484
4485static bfd_boolean
4486bfd_mach_o_read_source_version (bfd *abfd, bfd_mach_o_load_command *command)
4487{
4488 bfd_mach_o_source_version_command *cmd = &command->command.source_version;
4489 struct mach_o_source_version_command_external raw;
4490 bfd_uint64_t ver;
4491
4492 if (bfd_seek (abfd, command->offset + BFD_MACH_O_LC_SIZE, SEEK_SET) != 0
4493 || bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
4494 return FALSE;
4495
4496 ver = bfd_get_64 (abfd, raw.version);
4497 /* Note: we use a serie of shift to avoid shift > 32 (for which gcc
4498 generates warnings) in case of the host doesn't support 64 bit
4499 integers. */
4500 cmd->e = ver & 0x3ff;
4501 ver >>= 10;
4502 cmd->d = ver & 0x3ff;
4503 ver >>= 10;
4504 cmd->c = ver & 0x3ff;
4505 ver >>= 10;
4506 cmd->b = ver & 0x3ff;
4507 ver >>= 10;
4508 cmd->a = ver & 0xffffff;
4509 return TRUE;
4510}
4511
452216ab 4512static bfd_boolean
ab273af8
TG		 4513bfd_mach_o_read_segment (bfd *abfd,
4514 bfd_mach_o_load_command *command,
4515 unsigned int wide)
3af9a47b 4516{
3af9a47b
NC		 4517 bfd_mach_o_segment_command *seg = &command->command.segment;
4518 unsigned long i;
a95a4550 4519
1e8a024a
TG		 4520 if (wide)
4521 {
46d1c23b
TG		 4522 struct mach_o_segment_command_64_external raw;
4523
1e8a024a 4524 BFD_ASSERT (command->type == BFD_MACH_O_LC_SEGMENT_64);
3af9a47b 4525
46d1c23b
TG		 4526 if (bfd_seek (abfd, command->offset + BFD_MACH_O_LC_SIZE, SEEK_SET) != 0
4527 || bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
452216ab 4528 return FALSE;
3af9a47b 4529
46d1c23b 4530 memcpy (seg->segname, raw.segname, 16);
15e1c58a 4531 seg->segname[16] = '\0';
1e8a024a 4532
46d1c23b
TG		 4533 seg->vmaddr = bfd_h_get_64 (abfd, raw.vmaddr);
4534 seg->vmsize = bfd_h_get_64 (abfd, raw.vmsize);
4535 seg->fileoff = bfd_h_get_64 (abfd, raw.fileoff);
4536 seg->filesize = bfd_h_get_64 (abfd, raw.filesize);
4537 seg->maxprot = bfd_h_get_32 (abfd, raw.maxprot);
4538 seg->initprot = bfd_h_get_32 (abfd, raw.initprot);
4539 seg->nsects = bfd_h_get_32 (abfd, raw.nsects);
4540 seg->flags = bfd_h_get_32 (abfd, raw.flags);
1e8a024a
TG		 4541 }
4542 else
4543 {
46d1c23b
TG		 4544 struct mach_o_segment_command_32_external raw;
4545
1e8a024a
TG		 4546 BFD_ASSERT (command->type == BFD_MACH_O_LC_SEGMENT);
4547
46d1c23b
TG		 4548 if (bfd_seek (abfd, command->offset + BFD_MACH_O_LC_SIZE, SEEK_SET) != 0
4549 || bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
452216ab 4550 return FALSE;
1e8a024a 4551
46d1c23b 4552 memcpy (seg->segname, raw.segname, 16);
15e1c58a 4553 seg->segname[16] = '\0';
1e8a024a 4554
46d1c23b
TG		 4555 seg->vmaddr = bfd_h_get_32 (abfd, raw.vmaddr);
4556 seg->vmsize = bfd_h_get_32 (abfd, raw.vmsize);
4557 seg->fileoff = bfd_h_get_32 (abfd, raw.fileoff);
4558 seg->filesize = bfd_h_get_32 (abfd, raw.filesize);
4559 seg->maxprot = bfd_h_get_32 (abfd, raw.maxprot);
4560 seg->initprot = bfd_h_get_32 (abfd, raw.initprot);
4561 seg->nsects = bfd_h_get_32 (abfd, raw.nsects);
4562 seg->flags = bfd_h_get_32 (abfd, raw.flags);
1e8a024a 4563 }
9d4b6009
TG		 4564 seg->sect_head = NULL;
4565 seg->sect_tail = NULL;
3af9a47b 4566
f1bde64c 4567 for (i = 0; i < seg->nsects; i++)
3af9a47b 4568 {
f1bde64c
TG		 4569 bfd_vma segoff;
4570 asection *sec;
a95a4550 4571
f1bde64c
TG		 4572 if (wide)
4573 segoff = command->offset + BFD_MACH_O_LC_SEGMENT_64_SIZE
4574 + (i * BFD_MACH_O_SECTION_64_SIZE);
4575 else
4576 segoff = command->offset + BFD_MACH_O_LC_SEGMENT_SIZE
4577 + (i * BFD_MACH_O_SECTION_SIZE);
3af9a47b 4578
f1bde64c
TG		 4579 sec = bfd_mach_o_read_section (abfd, segoff, seg->initprot, wide);
4580 if (sec == NULL)
452216ab 4581 return FALSE;
f1bde64c 4582
c9ffd2ea
TG		 4583 bfd_mach_o_append_section_to_segment
4584 (seg, bfd_mach_o_get_mach_o_section (sec));
3af9a47b
NC		 4585 }
4586
452216ab 4587 return TRUE;
3af9a47b
NC		 4588}
4589
452216ab 4590static bfd_boolean
ab273af8 4591bfd_mach_o_read_segment_32 (bfd *abfd, bfd_mach_o_load_command *command)
1e8a024a 4592{
ab273af8 4593 return bfd_mach_o_read_segment (abfd, command, 0);
1e8a024a
TG		 4594}
4595
452216ab 4596static bfd_boolean
ab273af8 4597bfd_mach_o_read_segment_64 (bfd *abfd, bfd_mach_o_load_command *command)
1e8a024a 4598{
ab273af8 4599 return bfd_mach_o_read_segment (abfd, command, 1);
1e8a024a
TG		 4600}
4601
452216ab 4602static bfd_boolean
ab273af8 4603bfd_mach_o_read_command (bfd *abfd, bfd_mach_o_load_command *command)
3af9a47b 4604{
46d1c23b
TG		 4605 struct mach_o_load_command_external raw;
4606 unsigned int cmd;
3af9a47b 4607
046b007d 4608 /* Read command type and length. */
c2f09c75 4609 if (bfd_seek (abfd, command->offset, SEEK_SET) != 0
46d1c23b 4610 || bfd_bread (&raw, BFD_MACH_O_LC_SIZE, abfd) != BFD_MACH_O_LC_SIZE)
452216ab 4611 return FALSE;
3af9a47b 4612
46d1c23b
TG		 4613 cmd = bfd_h_get_32 (abfd, raw.cmd);
4614 command->type = cmd & ~BFD_MACH_O_LC_REQ_DYLD;
4615 command->type_required = cmd & BFD_MACH_O_LC_REQ_DYLD ? TRUE : FALSE;
4616 command->len = bfd_h_get_32 (abfd, raw.cmdsize);
3af9a47b
NC		 4617
4618 switch (command->type)
4619 {
4620 case BFD_MACH_O_LC_SEGMENT:
452216ab
TG		 4621 if (!bfd_mach_o_read_segment_32 (abfd, command))
4622 return FALSE;
1e8a024a
TG		 4623 break;
4624 case BFD_MACH_O_LC_SEGMENT_64:
452216ab
TG		 4625 if (!bfd_mach_o_read_segment_64 (abfd, command))
4626 return FALSE;
3af9a47b
NC		 4627 break;
4628 case BFD_MACH_O_LC_SYMTAB:
452216ab
TG		 4629 if (!bfd_mach_o_read_symtab (abfd, command))
4630 return FALSE;
3af9a47b
NC		 4631 break;
4632 case BFD_MACH_O_LC_SYMSEG:
4633 break;
4634 case BFD_MACH_O_LC_THREAD:
4635 case BFD_MACH_O_LC_UNIXTHREAD:
452216ab
TG		 4636 if (!bfd_mach_o_read_thread (abfd, command))
4637 return FALSE;
3af9a47b
NC		 4638 break;
4639 case BFD_MACH_O_LC_LOAD_DYLINKER:
4640 case BFD_MACH_O_LC_ID_DYLINKER:
10be66a4 4641 case BFD_MACH_O_LC_DYLD_ENVIRONMENT:
452216ab
TG		 4642 if (!bfd_mach_o_read_dylinker (abfd, command))
4643 return FALSE;
3af9a47b
NC		 4644 break;
4645 case BFD_MACH_O_LC_LOAD_DYLIB:
fbe383b9 4646 case BFD_MACH_O_LC_LAZY_LOAD_DYLIB:
3af9a47b
NC		 4647 case BFD_MACH_O_LC_ID_DYLIB:
4648 case BFD_MACH_O_LC_LOAD_WEAK_DYLIB:
046b007d 4649 case BFD_MACH_O_LC_REEXPORT_DYLIB:
73017762 4650 case BFD_MACH_O_LC_LOAD_UPWARD_DYLIB:
452216ab
TG		 4651 if (!bfd_mach_o_read_dylib (abfd, command))
4652 return FALSE;
3af9a47b
NC		 4653 break;
4654 case BFD_MACH_O_LC_PREBOUND_DYLIB:
452216ab
TG		 4655 if (!bfd_mach_o_read_prebound_dylib (abfd, command))
4656 return FALSE;
3af9a47b
NC		 4657 break;
4658 case BFD_MACH_O_LC_LOADFVMLIB:
4659 case BFD_MACH_O_LC_IDFVMLIB:
452216ab
TG		 4660 if (!bfd_mach_o_read_fvmlib (abfd, command))
4661 return FALSE;
9f4a5bd1 4662 break;
3af9a47b
NC		 4663 case BFD_MACH_O_LC_IDENT:
4664 case BFD_MACH_O_LC_FVMFILE:
4665 case BFD_MACH_O_LC_PREPAGE:
4666 case BFD_MACH_O_LC_ROUTINES:
9b02d212 4667 case BFD_MACH_O_LC_ROUTINES_64:
046b007d 4668 break;
3af9a47b 4669 case BFD_MACH_O_LC_SUB_FRAMEWORK:
046b007d
TG		 4670 case BFD_MACH_O_LC_SUB_UMBRELLA:
4671 case BFD_MACH_O_LC_SUB_LIBRARY:
4672 case BFD_MACH_O_LC_SUB_CLIENT:
0c9b2b4c 4673 case BFD_MACH_O_LC_RPATH:
452216ab
TG		 4674 if (!bfd_mach_o_read_str (abfd, command))
4675 return FALSE;
3af9a47b
NC		 4676 break;
4677 case BFD_MACH_O_LC_DYSYMTAB:
452216ab
TG		 4678 if (!bfd_mach_o_read_dysymtab (abfd, command))
4679 return FALSE;
3af9a47b 4680 break;
3af9a47b 4681 case BFD_MACH_O_LC_PREBIND_CKSUM:
452216ab
TG		 4682 if (!bfd_mach_o_read_prebind_cksum (abfd, command))
4683 return FALSE;
7a79c514
TG		 4684 break;
4685 case BFD_MACH_O_LC_TWOLEVEL_HINTS:
452216ab
TG		 4686 if (!bfd_mach_o_read_twolevel_hints (abfd, command))
4687 return FALSE;
3af9a47b 4688 break;
15e1c58a 4689 case BFD_MACH_O_LC_UUID:
452216ab
TG		 4690 if (!bfd_mach_o_read_uuid (abfd, command))
4691 return FALSE;
15e1c58a
TG		 4692 break;
4693 case BFD_MACH_O_LC_CODE_SIGNATURE:
846b9259 4694 case BFD_MACH_O_LC_SEGMENT_SPLIT_INFO:
edbdea0e 4695 case BFD_MACH_O_LC_FUNCTION_STARTS:
1778ad74
TG		 4696 case BFD_MACH_O_LC_DATA_IN_CODE:
4697 case BFD_MACH_O_LC_DYLIB_CODE_SIGN_DRS:
452216ab
TG		 4698 if (!bfd_mach_o_read_linkedit (abfd, command))
4699 return FALSE;
15e1c58a 4700 break;
fc55a902
TG		 4701 case BFD_MACH_O_LC_ENCRYPTION_INFO:
4702 if (!bfd_mach_o_read_encryption_info (abfd, command))
452216ab 4703 return FALSE;
fc55a902 4704 break;
ad86f1fb 4705 case BFD_MACH_O_LC_DYLD_INFO:
452216ab
TG		 4706 if (!bfd_mach_o_read_dyld_info (abfd, command))
4707 return FALSE;
ad86f1fb 4708 break;
edbdea0e
TG		 4709 case BFD_MACH_O_LC_VERSION_MIN_MACOSX:
4710 case BFD_MACH_O_LC_VERSION_MIN_IPHONEOS:
4711 if (!bfd_mach_o_read_version_min (abfd, command))
452216ab 4712 return FALSE;
edbdea0e 4713 break;
1778ad74
TG		 4714 case BFD_MACH_O_LC_MAIN:
4715 if (!bfd_mach_o_read_main (abfd, command))
452216ab 4716 return FALSE;
1778ad74
TG		 4717 break;
4718 case BFD_MACH_O_LC_SOURCE_VERSION:
4719 if (!bfd_mach_o_read_source_version (abfd, command))
452216ab 4720 return FALSE;
1778ad74 4721 break;
3af9a47b 4722 default:
86eafac0
NC		 4723 command->len = 0;
4724 (*_bfd_error_handler)(_("%B: unknown load command 0x%lx"),
4725 abfd, (unsigned long) command->type);
4726 return FALSE;
3af9a47b
NC		 4727 }
4728
452216ab 4729 return TRUE;
3af9a47b
NC		 4730}
4731
4732static void
116c20d2 4733bfd_mach_o_flatten_sections (bfd *abfd)
3af9a47b 4734{
046b007d 4735 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
c9ffd2ea 4736 bfd_mach_o_load_command *cmd;
3af9a47b 4737 long csect = 0;
a95a4550 4738
15e1c58a 4739 /* Count total number of sections. */
3af9a47b
NC		 4740 mdata->nsects = 0;
4741
c9ffd2ea 4742 for (cmd = mdata->first_command; cmd != NULL; cmd = cmd->next)
3af9a47b 4743 {
c9ffd2ea
TG		 4744 if (cmd->type == BFD_MACH_O_LC_SEGMENT
4745 || cmd->type == BFD_MACH_O_LC_SEGMENT_64)
3af9a47b 4746 {
c9ffd2ea 4747 bfd_mach_o_segment_command *seg = &cmd->command.segment;
e84d6fca 4748
3af9a47b
NC		 4749 mdata->nsects += seg->nsects;
4750 }
4751 }
4752
15e1c58a 4753 /* Allocate sections array. */
64d29018
NC		 4754 mdata->sections = bfd_alloc2 (abfd,
4755 mdata->nsects, sizeof (bfd_mach_o_section *));
15e1c58a
TG		 4756
4757 /* Fill the array. */
3af9a47b
NC		 4758 csect = 0;
4759
c9ffd2ea 4760 for (cmd = mdata->first_command; cmd != NULL; cmd = cmd->next)
3af9a47b 4761 {
c9ffd2ea
TG		 4762 if (cmd->type == BFD_MACH_O_LC_SEGMENT
4763 || cmd->type == BFD_MACH_O_LC_SEGMENT_64)
3af9a47b 4764 {
c9ffd2ea 4765 bfd_mach_o_segment_command *seg = &cmd->command.segment;
f1bde64c 4766 bfd_mach_o_section *sec;
3af9a47b
NC		 4767
4768 BFD_ASSERT (csect + seg->nsects <= mdata->nsects);
4769
f1bde64c
TG		 4770 for (sec = seg->sect_head; sec != NULL; sec = sec->next)
4771 mdata->sections[csect++] = sec;
3af9a47b
NC		 4772 }
4773 }
4774}
4775
afbb9e17 4776static bfd_boolean
116c20d2 4777bfd_mach_o_scan_start_address (bfd *abfd)
3af9a47b 4778{
046b007d 4779 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
c9ffd2ea
TG		 4780 bfd_mach_o_thread_command *thr = NULL;
4781 bfd_mach_o_load_command *cmd;
3af9a47b
NC		 4782 unsigned long i;
4783
c9ffd2ea
TG		 4784 for (cmd = mdata->first_command; cmd != NULL; cmd = cmd->next)
4785 if (cmd->type == BFD_MACH_O_LC_THREAD
4786 || cmd->type == BFD_MACH_O_LC_UNIXTHREAD)
afbb9e17 4787 {
c9ffd2ea 4788 thr = &cmd->command.thread;
afbb9e17
TG		 4789 break;
4790 }
c9ffd2ea 4791 else if (cmd->type == BFD_MACH_O_LC_MAIN && mdata->nsects > 1)
c0fd7846 4792 {
c9ffd2ea 4793 bfd_mach_o_main_command *main_cmd = &cmd->command.main;
c0fd7846 4794 bfd_mach_o_section *text_sect = mdata->sections[0];
c9ffd2ea 4795
c0fd7846
TG		 4796 if (text_sect)
4797 {
4798 abfd->start_address = main_cmd->entryoff
4799 + (text_sect->addr - text_sect->offset);
4800 return TRUE;
4801 }
4802 }
3af9a47b 4803
5ee43bc4 4804 /* An object file has no start address, so do not fail if not found. */
c9ffd2ea 4805 if (thr == NULL)
5ee43bc4 4806 return TRUE;
3af9a47b 4807
afbb9e17 4808 /* FIXME: create a subtarget hook ? */
c9ffd2ea 4809 for (i = 0; i < thr->nflavours; i++)
3af9a47b 4810 {
a95a4550 4811 if ((mdata->header.cputype == BFD_MACH_O_CPU_TYPE_I386)
c9ffd2ea 4812 && (thr->flavours[i].flavour == BFD_MACH_O_x86_THREAD_STATE32))
3af9a47b
NC		 4813 {
4814 unsigned char buf[4];
4815
c9ffd2ea 4816 if (bfd_seek (abfd, thr->flavours[i].offset + 40, SEEK_SET) != 0
c2f09c75 4817 || bfd_bread (buf, 4, abfd) != 4)
afbb9e17 4818 return FALSE;
3af9a47b
NC		 4819
4820 abfd->start_address = bfd_h_get_32 (abfd, buf);
4821 }
a95a4550 4822 else if ((mdata->header.cputype == BFD_MACH_O_CPU_TYPE_POWERPC)
c9ffd2ea 4823 && (thr->flavours[i].flavour == BFD_MACH_O_PPC_THREAD_STATE))
3af9a47b
NC		 4824 {
4825 unsigned char buf[4];
4826
c9ffd2ea 4827 if (bfd_seek (abfd, thr->flavours[i].offset + 0, SEEK_SET) != 0
c2f09c75 4828 || bfd_bread (buf, 4, abfd) != 4)
afbb9e17 4829 return FALSE;
3af9a47b
NC		 4830
4831 abfd->start_address = bfd_h_get_32 (abfd, buf);
4832 }
1e8a024a 4833 else if ((mdata->header.cputype == BFD_MACH_O_CPU_TYPE_POWERPC_64)
c9ffd2ea 4834 && (thr->flavours[i].flavour == BFD_MACH_O_PPC_THREAD_STATE64))
1e8a024a
TG		 4835 {
4836 unsigned char buf[8];
4837
c9ffd2ea 4838 if (bfd_seek (abfd, thr->flavours[i].offset + 0, SEEK_SET) != 0
c2f09c75 4839 || bfd_bread (buf, 8, abfd) != 8)
afbb9e17 4840 return FALSE;
1e8a024a
TG		 4841
4842 abfd->start_address = bfd_h_get_64 (abfd, buf);
4843 }
4844 else if ((mdata->header.cputype == BFD_MACH_O_CPU_TYPE_X86_64)
c9ffd2ea 4845 && (thr->flavours[i].flavour == BFD_MACH_O_x86_THREAD_STATE64))
1e8a024a
TG		 4846 {
4847 unsigned char buf[8];
4848
c9ffd2ea 4849 if (bfd_seek (abfd, thr->flavours[i].offset + (16 * 8), SEEK_SET) != 0
c2f09c75 4850 || bfd_bread (buf, 8, abfd) != 8)
afbb9e17 4851 return FALSE;
1e8a024a
TG		 4852
4853 abfd->start_address = bfd_h_get_64 (abfd, buf);
4854 }
3af9a47b
NC		 4855 }
4856
afbb9e17 4857 return TRUE;
3af9a47b
NC		 4858}
4859
42fa0891
TG		 4860bfd_boolean
4861bfd_mach_o_set_arch_mach (bfd *abfd,
4862 enum bfd_architecture arch,
4863 unsigned long machine)
4864{
4865 bfd_mach_o_backend_data *bed = bfd_mach_o_get_backend_data (abfd);
4866
4867 /* If this isn't the right architecture for this backend, and this
4868 isn't the generic backend, fail. */
4869 if (arch != bed->arch
4870 && arch != bfd_arch_unknown
4871 && bed->arch != bfd_arch_unknown)
4872 return FALSE;
4873
4874 return bfd_default_set_arch_mach (abfd, arch, machine);
4875}
4876
afbb9e17 4877static bfd_boolean
116c20d2
NC		 4878bfd_mach_o_scan (bfd *abfd,
4879 bfd_mach_o_header *header,
4880 bfd_mach_o_data_struct *mdata)
3af9a47b
NC		 4881{
4882 unsigned int i;
3af9a47b
NC		 4883 enum bfd_architecture cputype;
4884 unsigned long cpusubtype;
1e8a024a
TG		 4885 unsigned int hdrsize;
4886
c2f09c75 4887 hdrsize = mach_o_wide_p (header) ?
154a1ee5 4888 BFD_MACH_O_HEADER_64_SIZE : BFD_MACH_O_HEADER_SIZE;
3af9a47b 4889
3af9a47b 4890 mdata->header = *header;
3af9a47b 4891
154a1ee5 4892 abfd->flags = abfd->flags & BFD_IN_MEMORY;
15e1c58a
TG		 4893 switch (header->filetype)
4894 {
4895 case BFD_MACH_O_MH_OBJECT:
4896 abfd->flags |= HAS_RELOC;
4897 break;
4898 case BFD_MACH_O_MH_EXECUTE:
4899 abfd->flags |= EXEC_P;
4900 break;
4901 case BFD_MACH_O_MH_DYLIB:
4902 case BFD_MACH_O_MH_BUNDLE:
4903 abfd->flags |= DYNAMIC;
4904 break;
4905 }
4906
3af9a47b
NC		 4907 abfd->tdata.mach_o_data = mdata;
4908
e84d6fca
AM		 4909 bfd_mach_o_convert_architecture (header->cputype, header->cpusubtype,
4910 &cputype, &cpusubtype);
3af9a47b
NC		 4911 if (cputype == bfd_arch_unknown)
4912 {
afbb9e17
TG		 4913 (*_bfd_error_handler)
4914 (_("bfd_mach_o_scan: unknown architecture 0x%lx/0x%lx"),
4915 header->cputype, header->cpusubtype);
4916 return FALSE;
3af9a47b
NC		 4917 }
4918
4919 bfd_set_arch_mach (abfd, cputype, cpusubtype);
a95a4550 4920
3af9a47b
NC		 4921 if (header->ncmds != 0)
4922 {
c9ffd2ea
TG		 4923 bfd_mach_o_load_command *cmd;
4924
4925 mdata->first_command = NULL;
4926 mdata->last_command = NULL;
64d29018
NC		 4927
4928 cmd = bfd_alloc2 (abfd, header->ncmds, sizeof (bfd_mach_o_load_command));
c9ffd2ea 4929 if (cmd == NULL)
afbb9e17 4930 return FALSE;
a95a4550 4931
3af9a47b
NC		 4932 for (i = 0; i < header->ncmds; i++)
4933 {
c9ffd2ea
TG		 4934 bfd_mach_o_load_command *cur = &cmd[i];
4935
4936 bfd_mach_o_append_command (abfd, cur);
3af9a47b
NC		 4937
4938 if (i == 0)
1e8a024a 4939 cur->offset = hdrsize;
3af9a47b
NC		 4940 else
4941 {
c9ffd2ea 4942 bfd_mach_o_load_command *prev = &cmd[i - 1];
3af9a47b
NC		 4943 cur->offset = prev->offset + prev->len;
4944 }
4945
452216ab 4946 if (!bfd_mach_o_read_command (abfd, cur))
afbb9e17 4947 return FALSE;
a95a4550 4948 }
3af9a47b
NC		 4949 }
4950
c0fd7846
TG		 4951 /* Sections should be flatten before scanning start address. */
4952 bfd_mach_o_flatten_sections (abfd);
4953 if (!bfd_mach_o_scan_start_address (abfd))
afbb9e17 4954 return FALSE;
3af9a47b 4955
afbb9e17 4956 return TRUE;
3af9a47b
NC		 4957}
4958
b34976b6 4959bfd_boolean
154a1ee5 4960bfd_mach_o_mkobject_init (bfd *abfd)
3af9a47b
NC		 4961{
4962 bfd_mach_o_data_struct *mdata = NULL;
4963
b30a5d18 4964 mdata = bfd_zalloc (abfd, sizeof (bfd_mach_o_data_struct));
3af9a47b 4965 if (mdata == NULL)
b34976b6 4966 return FALSE;
3af9a47b
NC		 4967 abfd->tdata.mach_o_data = mdata;
4968
4969 mdata->header.magic = 0;
4970 mdata->header.cputype = 0;
4971 mdata->header.cpusubtype = 0;
4972 mdata->header.filetype = 0;
4973 mdata->header.ncmds = 0;
4974 mdata->header.sizeofcmds = 0;
4975 mdata->header.flags = 0;
4976 mdata->header.byteorder = BFD_ENDIAN_UNKNOWN;
c9ffd2ea
TG		 4977 mdata->first_command = NULL;
4978 mdata->last_command = NULL;
3af9a47b
NC		 4979 mdata->nsects = 0;
4980 mdata->sections = NULL;
4434114c 4981 mdata->dyn_reloc_cache = NULL;
3af9a47b 4982
b34976b6 4983 return TRUE;
3af9a47b
NC		 4984}
4985
42fa0891
TG		 4986static bfd_boolean
4987bfd_mach_o_gen_mkobject (bfd *abfd)
4988{
4989 bfd_mach_o_data_struct *mdata;
4990
4991 if (!bfd_mach_o_mkobject_init (abfd))
4992 return FALSE;
4993
4994 mdata = bfd_mach_o_get_data (abfd);
4995 mdata->header.magic = BFD_MACH_O_MH_MAGIC;
4996 mdata->header.cputype = 0;
4997 mdata->header.cpusubtype = 0;
4998 mdata->header.byteorder = abfd->xvec->byteorder;
4999 mdata->header.version = 1;
5000
5001 return TRUE;
5002}
5003
3af9a47b 5004const bfd_target *
154a1ee5
TG		 5005bfd_mach_o_header_p (bfd *abfd,
5006 bfd_mach_o_filetype filetype,
5007 bfd_mach_o_cpu_type cputype)
3af9a47b
NC		 5008{
5009 bfd_mach_o_header header;
c9ba0c87 5010 bfd_mach_o_data_struct *mdata;
3af9a47b 5011
154a1ee5 5012 if (!bfd_mach_o_read_header (abfd, &header))
e84d6fca 5013 goto wrong;
3af9a47b 5014
e84d6fca
AM		 5015 if (! (header.byteorder == BFD_ENDIAN_BIG
5016 || header.byteorder == BFD_ENDIAN_LITTLE))
3af9a47b 5017 {
4a97a0e5
AM		 5018 (*_bfd_error_handler) (_("unknown header byte-order value 0x%lx"),
5019 (unsigned long) header.byteorder);
e84d6fca 5020 goto wrong;
3af9a47b
NC		 5021 }
5022
e84d6fca
AM		 5023 if (! ((header.byteorder == BFD_ENDIAN_BIG
5024 && abfd->xvec->byteorder == BFD_ENDIAN_BIG
5025 && abfd->xvec->header_byteorder == BFD_ENDIAN_BIG)
5026 || (header.byteorder == BFD_ENDIAN_LITTLE
5027 && abfd->xvec->byteorder == BFD_ENDIAN_LITTLE
5028 && abfd->xvec->header_byteorder == BFD_ENDIAN_LITTLE)))
5029 goto wrong;
3af9a47b 5030
154a1ee5
TG		 5031 /* Check cputype and filetype.
5032 In case of wildcard, do not accept magics that are handled by existing
5033 targets. */
5034 if (cputype)
5035 {
5036 if (header.cputype != cputype)
5037 goto wrong;
5038 }
26954155
TG		 5039 else
5040 {
5041#ifndef BFD64
5042 /* Do not recognize 64 architectures if not configured for 64bit targets.
5043 This could happen only for generic targets. */
5044 if (mach_o_wide_p (&header))
5045 goto wrong;
5046#endif
5047 }
b22161d6 5048
154a1ee5
TG		 5049 if (filetype)
5050 {
5051 if (header.filetype != filetype)
5052 goto wrong;
5053 }
5054 else
5055 {
5056 switch (header.filetype)
5057 {
5058 case BFD_MACH_O_MH_CORE:
5059 /* Handled by core_p */
5060 goto wrong;
5061 default:
5062 break;
5063 }
5064 }
5065
c9ba0c87
AM		 5066 mdata = (bfd_mach_o_data_struct *) bfd_zalloc (abfd, sizeof (*mdata));
5067 if (mdata == NULL)
e84d6fca 5068 goto fail;
3af9a47b 5069
c9ba0c87 5070 if (!bfd_mach_o_scan (abfd, &header, mdata))
e84d6fca 5071 goto wrong;
a95a4550 5072
3af9a47b 5073 return abfd->xvec;
e84d6fca
AM		 5074
5075 wrong:
5076 bfd_set_error (bfd_error_wrong_format);
5077
5078 fail:
e84d6fca 5079 return NULL;
3af9a47b
NC		 5080}
5081
154a1ee5
TG		 5082static const bfd_target *
5083bfd_mach_o_gen_object_p (bfd *abfd)
3af9a47b 5084{
154a1ee5
TG		 5085 return bfd_mach_o_header_p (abfd, 0, 0);
5086}
e84d6fca 5087
154a1ee5
TG		 5088static const bfd_target *
5089bfd_mach_o_gen_core_p (bfd *abfd)
5090{
5091 return bfd_mach_o_header_p (abfd, BFD_MACH_O_MH_CORE, 0);
3af9a47b
NC		 5092}
5093
3cc27770
TG		 5094/* Return the base address of ABFD, ie the address at which the image is
5095 mapped. The possible initial pagezero is ignored. */
5096
5097bfd_vma
5098bfd_mach_o_get_base_address (bfd *abfd)
5099{
5100 bfd_mach_o_data_struct *mdata;
c9ffd2ea 5101 bfd_mach_o_load_command *cmd;
3cc27770
TG		 5102
5103 /* Check for Mach-O. */
5104 if (!bfd_mach_o_valid (abfd))
5105 return 0;
5106 mdata = bfd_mach_o_get_data (abfd);
5107
c9ffd2ea 5108 for (cmd = mdata->first_command; cmd != NULL; cmd = cmd->next)
3cc27770 5109 {
3cc27770
TG		 5110 if ((cmd->type == BFD_MACH_O_LC_SEGMENT
5111 || cmd->type == BFD_MACH_O_LC_SEGMENT_64))
5112 {
5113 struct bfd_mach_o_segment_command *segcmd = &cmd->command.segment;
5114
5115 if (segcmd->initprot != 0)
5116 return segcmd->vmaddr;
5117 }
5118 }
5119 return 0;
5120}
5121
3af9a47b
NC		 5122typedef struct mach_o_fat_archentry
5123{
5124 unsigned long cputype;
5125 unsigned long cpusubtype;
5126 unsigned long offset;
5127 unsigned long size;
5128 unsigned long align;
3af9a47b
NC		 5129} mach_o_fat_archentry;
5130
5131typedef struct mach_o_fat_data_struct
5132{
5133 unsigned long magic;
5134 unsigned long nfat_arch;
5135 mach_o_fat_archentry *archentries;
5136} mach_o_fat_data_struct;
5137
5138const bfd_target *
116c20d2 5139bfd_mach_o_archive_p (bfd *abfd)
3af9a47b 5140{
e84d6fca 5141 mach_o_fat_data_struct *adata = NULL;
46d1c23b 5142 struct mach_o_fat_header_external hdr;
3af9a47b
NC		 5143 unsigned long i;
5144
c2f09c75 5145 if (bfd_seek (abfd, 0, SEEK_SET) != 0
46d1c23b 5146 || bfd_bread (&hdr, sizeof (hdr), abfd) != sizeof (hdr))
e84d6fca 5147 goto error;
3af9a47b 5148
116c20d2 5149 adata = bfd_alloc (abfd, sizeof (mach_o_fat_data_struct));
3af9a47b 5150 if (adata == NULL)
e84d6fca 5151 goto error;
a95a4550 5152
46d1c23b
TG		 5153 adata->magic = bfd_getb32 (hdr.magic);
5154 adata->nfat_arch = bfd_getb32 (hdr.nfat_arch);
3af9a47b 5155 if (adata->magic != 0xcafebabe)
e84d6fca 5156 goto error;
27cc28f9
AS		 5157 /* Avoid matching Java bytecode files, which have the same magic number.
5158 In the Java bytecode file format this field contains the JVM version,
5159 which starts at 43.0. */
5160 if (adata->nfat_arch > 30)
5161 goto error;
3af9a47b 5162
c2f09c75 5163 adata->archentries =
64d29018 5164 bfd_alloc2 (abfd, adata->nfat_arch, sizeof (mach_o_fat_archentry));
3af9a47b 5165 if (adata->archentries == NULL)
e84d6fca 5166 goto error;
3af9a47b
NC		 5167
5168 for (i = 0; i < adata->nfat_arch; i++)
5169 {
46d1c23b
TG		 5170 struct mach_o_fat_arch_external arch;
5171 if (bfd_bread (&arch, sizeof (arch), abfd) != sizeof (arch))
e84d6fca 5172 goto error;
46d1c23b
TG		 5173 adata->archentries[i].cputype = bfd_getb32 (arch.cputype);
5174 adata->archentries[i].cpusubtype = bfd_getb32 (arch.cpusubtype);
5175 adata->archentries[i].offset = bfd_getb32 (arch.offset);
5176 adata->archentries[i].size = bfd_getb32 (arch.size);
5177 adata->archentries[i].align = bfd_getb32 (arch.align);
3af9a47b
NC		 5178 }
5179
5180 abfd->tdata.mach_o_fat_data = adata;
64d29018 5181
3af9a47b 5182 return abfd->xvec;
e84d6fca
AM		 5183
5184 error:
5185 if (adata != NULL)
5186 bfd_release (abfd, adata);
5187 bfd_set_error (bfd_error_wrong_format);
5188 return NULL;
3af9a47b
NC		 5189}
5190
a4e241ca
TG		 5191/* Set the filename for a fat binary member ABFD, whose bfd architecture is
5192 ARCH_TYPE/ARCH_SUBTYPE and corresponding entry in header is ENTRY.
5193 Set arelt_data and origin fields too. */
5194
5195static void
5196bfd_mach_o_fat_member_init (bfd *abfd,
5197 enum bfd_architecture arch_type,
5198 unsigned long arch_subtype,
5199 mach_o_fat_archentry *entry)
5200{
5201 struct areltdata *areltdata;
5202 /* Create the member filename. Use ARCH_NAME. */
5203 const bfd_arch_info_type *ap = bfd_lookup_arch (arch_type, arch_subtype);
5204
5205 if (ap)
5206 {
5207 /* Use the architecture name if known. */
1be5090b 5208 abfd->filename = xstrdup (ap->printable_name);
a4e241ca
TG		 5209 }
5210 else
5211 {
5212 /* Forge a uniq id. */
5213 const size_t namelen = 2 + 8 + 1 + 2 + 8 + 1;
1be5090b 5214 char *name = xmalloc (namelen);
a4e241ca
TG		 5215 snprintf (name, namelen, "0x%lx-0x%lx",
5216 entry->cputype, entry->cpusubtype);
5217 abfd->filename = name;
5218 }
5219
06e7acd7 5220 areltdata = bfd_zmalloc (sizeof (struct areltdata));
a4e241ca
TG		 5221 areltdata->parsed_size = entry->size;
5222 abfd->arelt_data = areltdata;
5223 abfd->iostream = NULL;
5224 abfd->origin = entry->offset;
5225}
5226
3af9a47b 5227bfd *
116c20d2 5228bfd_mach_o_openr_next_archived_file (bfd *archive, bfd *prev)
3af9a47b 5229{
e84d6fca 5230 mach_o_fat_data_struct *adata;
3af9a47b
NC		 5231 mach_o_fat_archentry *entry = NULL;
5232 unsigned long i;
15e1c58a 5233 bfd *nbfd;
15e1c58a
TG		 5234 enum bfd_architecture arch_type;
5235 unsigned long arch_subtype;
3af9a47b 5236
e84d6fca 5237 adata = (mach_o_fat_data_struct *) archive->tdata.mach_o_fat_data;
3af9a47b
NC		 5238 BFD_ASSERT (adata != NULL);
5239
5240 /* Find index of previous entry. */
5241 if (prev == NULL)
a4e241ca
TG		 5242 {
5243 /* Start at first one. */
5244 i = 0;
5245 }
3af9a47b
NC		 5246 else
5247 {
a4e241ca 5248 /* Find index of PREV. */
3af9a47b
NC		 5249 for (i = 0; i < adata->nfat_arch; i++)
5250 {
15e1c58a 5251 if (adata->archentries[i].offset == prev->origin)
3af9a47b
NC		 5252 break;
5253 }
5254
5255 if (i == adata->nfat_arch)
5256 {
5257 /* Not found. */
5258 bfd_set_error (bfd_error_bad_value);
a95a4550 5259 return NULL;
3af9a47b 5260 }
a4e241ca
TG		 5261
5262 /* Get next entry. */
5263 i++;
5264 }
a95a4550 5265
3af9a47b
NC		 5266 if (i >= adata->nfat_arch)
5267 {
5268 bfd_set_error (bfd_error_no_more_archived_files);
5269 return NULL;
5270 }
5271
5272 entry = &adata->archentries[i];
15e1c58a
TG		 5273 nbfd = _bfd_new_bfd_contained_in (archive);
5274 if (nbfd == NULL)
5275 return NULL;
5276
15e1c58a
TG		 5277 bfd_mach_o_convert_architecture (entry->cputype, entry->cpusubtype,
5278 &arch_type, &arch_subtype);
846b9259 5279
a4e241ca
TG		 5280 bfd_mach_o_fat_member_init (nbfd, arch_type, arch_subtype, entry);
5281
846b9259 5282 bfd_set_arch_mach (nbfd, arch_type, arch_subtype);
3af9a47b 5283
15e1c58a 5284 return nbfd;
3af9a47b
NC		 5285}
5286
15bbba8d
TG		 5287/* Analogous to stat call. */
5288
5289static int
5290bfd_mach_o_fat_stat_arch_elt (bfd *abfd, struct stat *buf)
5291{
5292 if (abfd->arelt_data == NULL)
5293 {
5294 bfd_set_error (bfd_error_invalid_operation);
5295 return -1;
5296 }
5297
5298 buf->st_mtime = 0;
5299 buf->st_uid = 0;
5300 buf->st_gid = 0;
5301 buf->st_mode = 0644;
5302 buf->st_size = arelt_size (abfd);
5303
5304 return 0;
5305}
5306
846b9259
TG		 5307/* If ABFD format is FORMAT and architecture is ARCH, return it.
5308 If ABFD is a fat image containing a member that corresponds to FORMAT
5309 and ARCH, returns it.
5310 In other case, returns NULL.
5311 This function allows transparent uses of fat images. */
a4e241ca 5312
846b9259
TG		 5313bfd *
5314bfd_mach_o_fat_extract (bfd *abfd,
5315 bfd_format format,
5316 const bfd_arch_info_type *arch)
5317{
5318 bfd *res;
5319 mach_o_fat_data_struct *adata;
5320 unsigned int i;
5321
5322 if (bfd_check_format (abfd, format))
5323 {
5324 if (bfd_get_arch_info (abfd) == arch)
5325 return abfd;
5326 return NULL;
5327 }
5328 if (!bfd_check_format (abfd, bfd_archive)
5329 || abfd->xvec != &mach_o_fat_vec)
5330 return NULL;
c2f09c75 5331
846b9259
TG		 5332 /* This is a Mach-O fat image. */
5333 adata = (mach_o_fat_data_struct *) abfd->tdata.mach_o_fat_data;
5334 BFD_ASSERT (adata != NULL);
5335
5336 for (i = 0; i < adata->nfat_arch; i++)
5337 {
5338 struct mach_o_fat_archentry *e = &adata->archentries[i];
5339 enum bfd_architecture cpu_type;
5340 unsigned long cpu_subtype;
5341
5342 bfd_mach_o_convert_architecture (e->cputype, e->cpusubtype,
5343 &cpu_type, &cpu_subtype);
5344 if (cpu_type != arch->arch || cpu_subtype != arch->mach)
5345 continue;
5346
5347 /* The architecture is found. */
5348 res = _bfd_new_bfd_contained_in (abfd);
5349 if (res == NULL)
5350 return NULL;
5351
a4e241ca 5352 bfd_mach_o_fat_member_init (res, cpu_type, cpu_subtype, e);
846b9259
TG		 5353
5354 if (bfd_check_format (res, format))
5355 {
5356 BFD_ASSERT (bfd_get_arch_info (res) == arch);
5357 return res;
5358 }
5359 bfd_close (res);
5360 return NULL;
5361 }
5362
5363 return NULL;
5364}
5365
3af9a47b 5366int
116c20d2
NC		 5367bfd_mach_o_lookup_command (bfd *abfd,
5368 bfd_mach_o_load_command_type type,
5369 bfd_mach_o_load_command **mcommand)
3af9a47b 5370{
c9ffd2ea
TG		 5371 struct mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
5372 struct bfd_mach_o_load_command *cmd;
5373 unsigned int num;
3af9a47b 5374
c9ffd2ea 5375 BFD_ASSERT (mdata != NULL);
3af9a47b
NC		 5376 BFD_ASSERT (mcommand != NULL);
5377
5378 num = 0;
c9ffd2ea 5379 for (cmd = mdata->first_command; cmd != NULL; cmd = cmd->next)
3af9a47b 5380 {
3af9a47b
NC		 5381 if (cmd->type != type)
5382 continue;
5383
5384 if (num == 0)
c9ffd2ea 5385 *mcommand = cmd;
3af9a47b
NC		 5386 num++;
5387 }
5388
3af9a47b
NC		 5389 return num;
5390}
5391
5392unsigned long
116c20d2 5393bfd_mach_o_stack_addr (enum bfd_mach_o_cpu_type type)
3af9a47b
NC		 5394{
5395 switch (type)
5396 {
5397 case BFD_MACH_O_CPU_TYPE_MC680x0:
5398 return 0x04000000;
5399 case BFD_MACH_O_CPU_TYPE_MC88000:
5400 return 0xffffe000;
5401 case BFD_MACH_O_CPU_TYPE_POWERPC:
5402 return 0xc0000000;
5403 case BFD_MACH_O_CPU_TYPE_I386:
5404 return 0xc0000000;
5405 case BFD_MACH_O_CPU_TYPE_SPARC:
5406 return 0xf0000000;
5407 case BFD_MACH_O_CPU_TYPE_I860:
5408 return 0;
5409 case BFD_MACH_O_CPU_TYPE_HPPA:
e84d6fca 5410 return 0xc0000000 - 0x04000000;
3af9a47b
NC		 5411 default:
5412 return 0;
5413 }
5414}
5415
ab76eeaf
IS		 5416/* The following two tables should be kept, as far as possible, in order of
5417 most frequently used entries to optimize their use from gas. */
5418
c5012cd8 5419const bfd_mach_o_xlat_name bfd_mach_o_section_type_name[] =
046b007d
TG		 5420{
5421 { "regular", BFD_MACH_O_S_REGULAR},
ab76eeaf 5422 { "coalesced", BFD_MACH_O_S_COALESCED},
046b007d
TG		 5423 { "zerofill", BFD_MACH_O_S_ZEROFILL},
5424 { "cstring_literals", BFD_MACH_O_S_CSTRING_LITERALS},
5425 { "4byte_literals", BFD_MACH_O_S_4BYTE_LITERALS},
5426 { "8byte_literals", BFD_MACH_O_S_8BYTE_LITERALS},
ab76eeaf 5427 { "16byte_literals", BFD_MACH_O_S_16BYTE_LITERALS},
046b007d 5428 { "literal_pointers", BFD_MACH_O_S_LITERAL_POINTERS},
046b007d
TG		 5429 { "mod_init_func_pointers", BFD_MACH_O_S_MOD_INIT_FUNC_POINTERS},
5430 { "mod_fini_func_pointers", BFD_MACH_O_S_MOD_FINI_FUNC_POINTERS},
046b007d
TG		 5431 { "gb_zerofill", BFD_MACH_O_S_GB_ZEROFILL},
5432 { "interposing", BFD_MACH_O_S_INTERPOSING},
046b007d 5433 { "dtrace_dof", BFD_MACH_O_S_DTRACE_DOF},
ab76eeaf
IS		 5434 { "non_lazy_symbol_pointers", BFD_MACH_O_S_NON_LAZY_SYMBOL_POINTERS},
5435 { "lazy_symbol_pointers", BFD_MACH_O_S_LAZY_SYMBOL_POINTERS},
a4551119 5436 { "symbol_stubs", BFD_MACH_O_S_SYMBOL_STUBS},
046b007d
TG		 5437 { "lazy_dylib_symbol_pointers", BFD_MACH_O_S_LAZY_DYLIB_SYMBOL_POINTERS},
5438 { NULL, 0}
5439};
5440
c5012cd8 5441const bfd_mach_o_xlat_name bfd_mach_o_section_attribute_name[] =
046b007d 5442{
ab76eeaf
IS		 5443 { "pure_instructions", BFD_MACH_O_S_ATTR_PURE_INSTRUCTIONS },
5444 { "some_instructions", BFD_MACH_O_S_ATTR_SOME_INSTRUCTIONS },
046b007d
TG		 5445 { "loc_reloc", BFD_MACH_O_S_ATTR_LOC_RELOC },
5446 { "ext_reloc", BFD_MACH_O_S_ATTR_EXT_RELOC },
046b007d 5447 { "debug", BFD_MACH_O_S_ATTR_DEBUG },
046b007d
TG		 5448 { "live_support", BFD_MACH_O_S_ATTR_LIVE_SUPPORT },
5449 { "no_dead_strip", BFD_MACH_O_S_ATTR_NO_DEAD_STRIP },
5450 { "strip_static_syms", BFD_MACH_O_S_ATTR_STRIP_STATIC_SYMS },
5451 { "no_toc", BFD_MACH_O_S_ATTR_NO_TOC },
a4551119 5452 { "self_modifying_code", BFD_MACH_O_S_SELF_MODIFYING_CODE },
ab76eeaf 5453 { "modifying_code", BFD_MACH_O_S_SELF_MODIFYING_CODE },
046b007d
TG		 5454 { NULL, 0}
5455};
5456
a4551119 5457/* Get the section type from NAME. Return 256 if NAME is unknown. */
53d58d96
TG		 5458
5459unsigned int
ab76eeaf 5460bfd_mach_o_get_section_type_from_name (bfd *abfd, const char *name)
53d58d96 5461{
afbb9e17 5462 const bfd_mach_o_xlat_name *x;
ab76eeaf 5463 bfd_mach_o_backend_data *bed = bfd_mach_o_get_backend_data (abfd);
53d58d96
TG		 5464
5465 for (x = bfd_mach_o_section_type_name; x->name; x++)
5466 if (strcmp (x->name, name) == 0)
ab76eeaf
IS		 5467 {
5468 /* We found it... does the target support it? */
5469 if (bed->bfd_mach_o_section_type_valid_for_target == NULL
5470 || bed->bfd_mach_o_section_type_valid_for_target (x->val))
5471 return x->val; /* OK. */
5472 else
5473 break; /* Not supported. */
5474 }
a4551119
TG		 5475 /* Maximum section ID = 0xff. */
5476 return 256;
53d58d96
TG		 5477}
5478
5479/* Get the section attribute from NAME. Return -1 if NAME is unknown. */
5480
5481unsigned int
5482bfd_mach_o_get_section_attribute_from_name (const char *name)
5483{
afbb9e17 5484 const bfd_mach_o_xlat_name *x;
53d58d96
TG		 5485
5486 for (x = bfd_mach_o_section_attribute_name; x->name; x++)
5487 if (strcmp (x->name, name) == 0)
5488 return x->val;
5489 return (unsigned int)-1;
5490}
5491
3af9a47b 5492int
116c20d2
NC		 5493bfd_mach_o_core_fetch_environment (bfd *abfd,
5494 unsigned char **rbuf,
5495 unsigned int *rlen)
3af9a47b 5496{
046b007d 5497 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
3af9a47b 5498 unsigned long stackaddr = bfd_mach_o_stack_addr (mdata->header.cputype);
c9ffd2ea 5499 bfd_mach_o_load_command *cmd;
3af9a47b 5500
c9ffd2ea 5501 for (cmd = mdata->first_command; cmd != NULL; cmd = cmd->next)
3af9a47b 5502 {
c9ffd2ea 5503 bfd_mach_o_segment_command *seg;
3af9a47b 5504
c9ffd2ea 5505 if (cmd->type != BFD_MACH_O_LC_SEGMENT)
3af9a47b
NC		 5506 continue;
5507
c9ffd2ea 5508 seg = &cmd->command.segment;
3af9a47b
NC		 5509
5510 if ((seg->vmaddr + seg->vmsize) == stackaddr)
5511 {
5512 unsigned long start = seg->fileoff;
5513 unsigned long end = seg->fileoff + seg->filesize;
5514 unsigned char *buf = bfd_malloc (1024);
5515 unsigned long size = 1024;
5516
5517 for (;;)
5518 {
5519 bfd_size_type nread = 0;
5520 unsigned long offset;
5521 int found_nonnull = 0;
5522
5523 if (size > (end - start))
5524 size = (end - start);
5525
515ef31d
NC		 5526 buf = bfd_realloc_or_free (buf, size);
5527 if (buf == NULL)
5528 return -1;
c2f09c75
TG		 5529
5530 if (bfd_seek (abfd, end - size, SEEK_SET) != 0)
5531 {
5532 free (buf);
5533 return -1;
5534 }
5535
3af9a47b 5536 nread = bfd_bread (buf, size, abfd);
a95a4550 5537
3af9a47b 5538 if (nread != size)
515ef31d
NC		 5539 {
5540 free (buf);
5541 return -1;
5542 }
a95a4550 5543
3af9a47b
NC		 5544 for (offset = 4; offset <= size; offset += 4)
5545 {
e84d6fca 5546 unsigned long val;
3af9a47b 5547
e84d6fca 5548 val = *((unsigned long *) (buf + size - offset));
3af9a47b
NC		 5549 if (! found_nonnull)
5550 {
5551 if (val != 0)
5552 found_nonnull = 1;
5553 }
5554 else if (val == 0x0)
5555 {
e84d6fca
AM		 5556 unsigned long bottom;
5557 unsigned long top;
3af9a47b 5558
e84d6fca
AM		 5559 bottom = seg->fileoff + seg->filesize - offset;
5560 top = seg->fileoff + seg->filesize - 4;
3af9a47b
NC		 5561 *rbuf = bfd_malloc (top - bottom);
5562 *rlen = top - bottom;
5563
5564 memcpy (*rbuf, buf + size - *rlen, *rlen);
515ef31d 5565 free (buf);
3af9a47b
NC		 5566 return 0;
5567 }
5568 }
5569
5570 if (size == (end - start))
5571 break;
5572
5573 size *= 2;
5574 }
515ef31d
NC		 5575
5576 free (buf);
3af9a47b
NC		 5577 }
5578 }
5579
5580 return -1;
5581}
5582
5583char *
116c20d2 5584bfd_mach_o_core_file_failing_command (bfd *abfd)
3af9a47b
NC		 5585{
5586 unsigned char *buf = NULL;
5587 unsigned int len = 0;
452216ab 5588 int ret;
3af9a47b
NC		 5589
5590 ret = bfd_mach_o_core_fetch_environment (abfd, &buf, &len);
5591 if (ret < 0)
5592 return NULL;
5593
f075ee0c 5594 return (char *) buf;
3af9a47b
NC		 5595}
5596
5597int
116c20d2 5598bfd_mach_o_core_file_failing_signal (bfd *abfd ATTRIBUTE_UNUSED)
3af9a47b
NC		 5599{
5600 return 0;
5601}
5602
2ca7691a
TG		 5603static bfd_mach_o_uuid_command *
5604bfd_mach_o_lookup_uuid_command (bfd *abfd)
5605{
5606 bfd_mach_o_load_command *uuid_cmd;
5607 int ncmd = bfd_mach_o_lookup_command (abfd, BFD_MACH_O_LC_UUID, &uuid_cmd);
5608 if (ncmd != 1)
5609 return FALSE;
5610 return &uuid_cmd->command.uuid;
5611}
5612
5613/* Return true if ABFD is a dSYM file and its UUID matches UUID_CMD. */
5614
5615static bfd_boolean
5616bfd_mach_o_dsym_for_uuid_p (bfd *abfd, const bfd_mach_o_uuid_command *uuid_cmd)
5617{
5618 bfd_mach_o_uuid_command *dsym_uuid_cmd;
5619
5620 BFD_ASSERT (abfd);
5621 BFD_ASSERT (uuid_cmd);
5622
5623 if (!bfd_check_format (abfd, bfd_object))
5624 return FALSE;
5625
5626 if (bfd_get_flavour (abfd) != bfd_target_mach_o_flavour
5627 || bfd_mach_o_get_data (abfd) == NULL
5628 || bfd_mach_o_get_data (abfd)->header.filetype != BFD_MACH_O_MH_DSYM)
5629 return FALSE;
5630
5631 dsym_uuid_cmd = bfd_mach_o_lookup_uuid_command (abfd);
5632 if (dsym_uuid_cmd == NULL)
5633 return FALSE;
5634
5635 if (memcmp (uuid_cmd->uuid, dsym_uuid_cmd->uuid,
5636 sizeof (uuid_cmd->uuid)) != 0)
5637 return FALSE;
5638
5639 return TRUE;
5640}
5641
5642/* Find a BFD in DSYM_FILENAME which matches ARCH and UUID_CMD.
5643 The caller is responsible for closing the returned BFD object and
5644 its my_archive if the returned BFD is in a fat dSYM. */
5645
5646static bfd *
5647bfd_mach_o_find_dsym (const char *dsym_filename,
5648 const bfd_mach_o_uuid_command *uuid_cmd,
5649 const bfd_arch_info_type *arch)
5650{
5651 bfd *base_dsym_bfd, *dsym_bfd;
5652
5653 BFD_ASSERT (uuid_cmd);
5654
5655 base_dsym_bfd = bfd_openr (dsym_filename, NULL);
5656 if (base_dsym_bfd == NULL)
5657 return NULL;
5658
5659 dsym_bfd = bfd_mach_o_fat_extract (base_dsym_bfd, bfd_object, arch);
5660 if (bfd_mach_o_dsym_for_uuid_p (dsym_bfd, uuid_cmd))
5661 return dsym_bfd;
5662
5663 bfd_close (dsym_bfd);
5664 if (base_dsym_bfd != dsym_bfd)
5665 bfd_close (base_dsym_bfd);
5666
5667 return NULL;
5668}
5669
5670/* Return a BFD created from a dSYM file for ABFD.
5671 The caller is responsible for closing the returned BFD object, its
5672 filename, and its my_archive if the returned BFD is in a fat dSYM. */
5673
5674static bfd *
5675bfd_mach_o_follow_dsym (bfd *abfd)
5676{
5677 char *dsym_filename;
5678 bfd_mach_o_uuid_command *uuid_cmd;
5679 bfd *dsym_bfd, *base_bfd = abfd;
5680 const char *base_basename;
5681
5682 if (abfd == NULL || bfd_get_flavour (abfd) != bfd_target_mach_o_flavour)
5683 return NULL;
5684
5685 if (abfd->my_archive)
5686 base_bfd = abfd->my_archive;
5687 /* BFD may have been opened from a stream. */
5688 if (base_bfd->filename == NULL)
5689 {
5690 bfd_set_error (bfd_error_invalid_operation);
5691 return NULL;
5692 }
5693 base_basename = lbasename (base_bfd->filename);
5694
5695 uuid_cmd = bfd_mach_o_lookup_uuid_command (abfd);
5696 if (uuid_cmd == NULL)
5697 return NULL;
5698
5699 /* TODO: We assume the DWARF file has the same as the binary's.
5700 It seems apple's GDB checks all files in the dSYM bundle directory.
5701 http://opensource.apple.com/source/gdb/gdb-1708/src/gdb/macosx/macosx-tdep.c
5702 */
5703 dsym_filename = (char *)bfd_malloc (strlen (base_bfd->filename)
5704 + strlen (dsym_subdir) + 1
5705 + strlen (base_basename) + 1);
5706 sprintf (dsym_filename, "%s%s/%s",
5707 base_bfd->filename, dsym_subdir, base_basename);
5708
5709 dsym_bfd = bfd_mach_o_find_dsym (dsym_filename, uuid_cmd,
5710 bfd_get_arch_info (abfd));
5711 if (dsym_bfd == NULL)
5712 free (dsym_filename);
5713
5714 return dsym_bfd;
5715}
5716
d9071b0c
TG		 5717bfd_boolean
5718bfd_mach_o_find_nearest_line (bfd *abfd,
d9071b0c 5719 asymbol **symbols,
fb167eb2 5720 asection *section,
d9071b0c
TG		 5721 bfd_vma offset,
5722 const char **filename_ptr,
5723 const char **functionname_ptr,
fb167eb2
AM		 5724 unsigned int *line_ptr,
5725 unsigned int *discriminator_ptr)
d9071b0c
TG		 5726{
5727 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
2ca7691a 5728 if (mdata == NULL)
d9071b0c 5729 return FALSE;
2ca7691a
TG		 5730 switch (mdata->header.filetype)
5731 {
5732 case BFD_MACH_O_MH_OBJECT:
5733 break;
5734 case BFD_MACH_O_MH_EXECUTE:
5735 case BFD_MACH_O_MH_DYLIB:
5736 case BFD_MACH_O_MH_BUNDLE:
5737 case BFD_MACH_O_MH_KEXT_BUNDLE:
5738 if (mdata->dwarf2_find_line_info == NULL)
5739 {
5740 mdata->dsym_bfd = bfd_mach_o_follow_dsym (abfd);
5741 /* When we couldn't find dSYM for this binary, we look for
5742 the debug information in the binary itself. In this way,
5743 we won't try finding separated dSYM again because
5744 mdata->dwarf2_find_line_info will be filled. */
5745 if (! mdata->dsym_bfd)
5746 break;
5747 if (! _bfd_dwarf2_slurp_debug_info (abfd, mdata->dsym_bfd,
5748 dwarf_debug_sections, symbols,
93ee1e36
AM		 5749 &mdata->dwarf2_find_line_info,
5750 FALSE))
2ca7691a
TG		 5751 return FALSE;
5752 }
5753 break;
5754 default:
5755 return FALSE;
5756 }
fb167eb2
AM		 5757 return _bfd_dwarf2_find_nearest_line (abfd, symbols, NULL, section, offset,
5758 filename_ptr, functionname_ptr,
5759 line_ptr, discriminator_ptr,
5760 dwarf_debug_sections, 0,
5761 &mdata->dwarf2_find_line_info);
d9071b0c
TG		 5762}
5763
5764bfd_boolean
5765bfd_mach_o_close_and_cleanup (bfd *abfd)
5766{
5767 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
5768 if (bfd_get_format (abfd) == bfd_object && mdata != NULL)
4434114c
TG		 5769 {
5770 _bfd_dwarf2_cleanup_debug_info (abfd, &mdata->dwarf2_find_line_info);
5771 bfd_mach_o_free_cached_info (abfd);
2ca7691a
TG		 5772 if (mdata->dsym_bfd != NULL)
5773 {
5774 bfd *fat_bfd = mdata->dsym_bfd->my_archive;
5775 char *dsym_filename = (char *)(fat_bfd
5776 ? fat_bfd->filename
5777 : mdata->dsym_bfd->filename);
5778 bfd_close (mdata->dsym_bfd);
5779 mdata->dsym_bfd = NULL;
5780 if (fat_bfd)
5781 bfd_close (fat_bfd);
5782 free (dsym_filename);
5783 }
4434114c 5784 }
dff55db0 5785
8c746b96
AM		 5786 if (bfd_get_format (abfd) == bfd_archive
5787 && abfd->xvec == &mach_o_fat_vec)
5788 return TRUE;
d9071b0c
TG		 5789 return _bfd_generic_close_and_cleanup (abfd);
5790}
5791
dff55db0
TG		 5792bfd_boolean bfd_mach_o_free_cached_info (bfd *abfd)
5793{
5794 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
5795 asection *asect;
5796 free (mdata->dyn_reloc_cache);
5797 mdata->dyn_reloc_cache = NULL;
5798 for (asect = abfd->sections; asect != NULL; asect = asect->next)
5799 {
5800 free (asect->relocation);
5801 asect->relocation = NULL;
5802 }
5803
5804 return TRUE;
5805}
5806
68ffbac6 5807#define bfd_mach_o_bfd_reloc_type_lookup _bfd_norelocs_bfd_reloc_type_lookup
92bc0e80
TG		 5808#define bfd_mach_o_bfd_reloc_name_lookup _bfd_norelocs_bfd_reloc_name_lookup
5809
5810#define bfd_mach_o_swap_reloc_in NULL
5811#define bfd_mach_o_swap_reloc_out NULL
b32e07d7 5812#define bfd_mach_o_print_thread NULL
a4551119 5813#define bfd_mach_o_tgt_seg_table NULL
ab76eeaf 5814#define bfd_mach_o_section_type_valid_for_tgt NULL
92bc0e80 5815
116c20d2
NC		 5816#define TARGET_NAME mach_o_be_vec
5817#define TARGET_STRING "mach-o-be"
42fa0891 5818#define TARGET_ARCHITECTURE bfd_arch_unknown
4384b284 5819#define TARGET_PAGESIZE 1
116c20d2
NC		 5820#define TARGET_BIG_ENDIAN 1
5821#define TARGET_ARCHIVE 0
b93a1992 5822#define TARGET_PRIORITY 1
3af9a47b
NC		 5823#include "mach-o-target.c"
5824
5825#undef TARGET_NAME
5826#undef TARGET_STRING
42fa0891 5827#undef TARGET_ARCHITECTURE
4384b284 5828#undef TARGET_PAGESIZE
3af9a47b
NC		 5829#undef TARGET_BIG_ENDIAN
5830#undef TARGET_ARCHIVE
b93a1992 5831#undef TARGET_PRIORITY
3af9a47b 5832
116c20d2
NC		 5833#define TARGET_NAME mach_o_le_vec
5834#define TARGET_STRING "mach-o-le"
42fa0891 5835#define TARGET_ARCHITECTURE bfd_arch_unknown
4384b284 5836#define TARGET_PAGESIZE 1
116c20d2
NC		 5837#define TARGET_BIG_ENDIAN 0
5838#define TARGET_ARCHIVE 0
b93a1992 5839#define TARGET_PRIORITY 1
3af9a47b
NC		 5840
5841#include "mach-o-target.c"
5842
5843#undef TARGET_NAME
5844#undef TARGET_STRING
42fa0891 5845#undef TARGET_ARCHITECTURE
4384b284 5846#undef TARGET_PAGESIZE
3af9a47b
NC		 5847#undef TARGET_BIG_ENDIAN
5848#undef TARGET_ARCHIVE
b93a1992 5849#undef TARGET_PRIORITY
3af9a47b 5850
8f95b6e4
TG		 5851/* Not yet handled: creating an archive. */
5852#define bfd_mach_o_mkarchive _bfd_noarchive_mkarchive
5853
5854/* Not used. */
5855#define bfd_mach_o_read_ar_hdr _bfd_noarchive_read_ar_hdr
5856#define bfd_mach_o_write_ar_hdr _bfd_noarchive_write_ar_hdr
5857#define bfd_mach_o_slurp_armap _bfd_noarchive_slurp_armap
5858#define bfd_mach_o_slurp_extended_name_table _bfd_noarchive_slurp_extended_name_table
5859#define bfd_mach_o_construct_extended_name_table _bfd_noarchive_construct_extended_name_table
5860#define bfd_mach_o_truncate_arname _bfd_noarchive_truncate_arname
5861#define bfd_mach_o_write_armap _bfd_noarchive_write_armap
5862#define bfd_mach_o_get_elt_at_index _bfd_noarchive_get_elt_at_index
15bbba8d 5863#define bfd_mach_o_generic_stat_arch_elt bfd_mach_o_fat_stat_arch_elt
8f95b6e4
TG		 5864#define bfd_mach_o_update_armap_timestamp _bfd_noarchive_update_armap_timestamp
5865
116c20d2
NC		 5866#define TARGET_NAME mach_o_fat_vec
5867#define TARGET_STRING "mach-o-fat"
42fa0891 5868#define TARGET_ARCHITECTURE bfd_arch_unknown
4384b284 5869#define TARGET_PAGESIZE 1
116c20d2
NC		 5870#define TARGET_BIG_ENDIAN 1
5871#define TARGET_ARCHIVE 1
b93a1992 5872#define TARGET_PRIORITY 0
3af9a47b
NC		 5873
5874#include "mach-o-target.c"
5875
5876#undef TARGET_NAME
5877#undef TARGET_STRING
42fa0891 5878#undef TARGET_ARCHITECTURE
4384b284 5879#undef TARGET_PAGESIZE
3af9a47b
NC		 5880#undef TARGET_BIG_ENDIAN
5881#undef TARGET_ARCHIVE
b93a1992 5882#undef TARGET_PRIORITY
GDB Binutils - Deliverables
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