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[deliverable/binutils-gdb.git] / bfd / mach-o.c
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3af9a47b 1/* Mach-O support for BFD.
2571583a 2 Copyright (C) 1999-2017 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 37#define FILE_ALIGN(off, algn) \
b6518b38 38 (((off) + ((file_ptr) 1 << (algn)) - 1) & ((file_ptr) -1U << (algn)))
92bc0e80 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 {
1b786873
L		 696 ody->rebase_size =
697 ody->bind_size =
698 ody->weak_bind_size =
699 ody->lazy_bind_size =
86eafac0 700 ody->export_size = 0;
1b786873
L		 701 ody->rebase_content =
702 ody->bind_content =
703 ody->weak_bind_content =
704 ody->lazy_bind_content =
86eafac0
NC		 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 {
4eca0228 778 _bfd_error_handler
afbb9e17 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
bcb51645 1302void
19765f52
IS		 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
bcb51645
TG		 1328/* Set syms_ptr_ptr and addend of RES. */
1329
1330bfd_boolean
1331bfd_mach_o_canonicalize_non_scattered_reloc (bfd *abfd,
1332 bfd_mach_o_reloc_info *reloc,
1333 arelent *res, asymbol **syms)
92bc0e80 1334{
046b007d 1335 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
bcb51645 1336 unsigned int num;
b32e07d7
TG		 1337 asymbol **sym;
1338
bcb51645
TG		 1339 /* Non-scattered relocation. */
1340 reloc->r_scattered = 0;
1341 res->addend = 0;
1342
1343 num = reloc->r_value;
1344
1345 if (reloc->r_extern)
1346 {
1347 /* PR 17512: file: 8396-1185-0.004. */
1348 if (num >= (unsigned) bfd_mach_o_count_symbols (abfd))
1349 sym = bfd_und_section_ptr->symbol_ptr_ptr;
1350 else if (syms == NULL)
1351 sym = bfd_und_section_ptr->symbol_ptr_ptr;
1352 else
1353 /* An external symbol number. */
1354 sym = syms + num;
1355 }
1356 else if (num == 0x00ffffff || num == 0)
1357 {
1358 /* The 'symnum' in a non-scattered PAIR is 0x00ffffff. But as this
1359 is generic code, we don't know wether this is really a PAIR.
1360 This value is almost certainly not a valid section number, hence
1361 this specific case to avoid an assertion failure.
1362 Target specific swap_reloc_in routine should adjust that. */
1363 sym = bfd_abs_section_ptr->symbol_ptr_ptr;
1364 }
1365 else
1366 {
1367 /* PR 17512: file: 006-2964-0.004. */
1368 if (num > mdata->nsects)
1369 return FALSE;
1370
1371 /* A section number. */
1372 sym = mdata->sections[num - 1]->bfdsection->symbol_ptr_ptr;
1373 /* For a symbol defined in section S, the addend (stored in the
1374 binary) contains the address of the section. To comply with
1375 bfd convention, subtract the section address.
1376 Use the address from the header, so that the user can modify
1377 the vma of the section. */
1378 res->addend = -mdata->sections[num - 1]->addr;
1379 }
1380
1381 /* Note: Pairs for PPC LO/HI/HA are not scattered, but contain the offset
1382 in the lower 16bits of the address value. So we have to find the
1383 'symbol' from the preceding reloc. We do this even though the
1384 section symbol is probably not needed here, because NULL symbol
1385 values cause an assert in generic BFD code. This must be done in
1386 the PPC swap_reloc_in routine. */
1387 res->sym_ptr_ptr = sym;
1388
1389 return TRUE;
1390}
1391
1392/* Do most of the work for canonicalize_relocs on RAW: create internal
1393 representation RELOC and set most fields of RES using symbol table SYMS.
1394 Each target still has to set the howto of RES and possibly adjust other
1395 fields.
1396 Previously the Mach-O hook point was simply swap_in, but some targets
1397 (like arm64) don't follow the generic rules (symnum is a value for the
1398 non-scattered relocation ADDEND). */
1399
1400bfd_boolean
1401bfd_mach_o_pre_canonicalize_one_reloc (bfd *abfd,
1402 struct mach_o_reloc_info_external *raw,
1403 bfd_mach_o_reloc_info *reloc,
1404 arelent *res, asymbol **syms)
1405{
1406 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
1407 bfd_vma addr;
1408
46d1c23b 1409 addr = bfd_get_32 (abfd, raw->r_address);
19765f52
IS		 1410 res->sym_ptr_ptr = NULL;
1411 res->addend = 0;
f4716ee2 1412
b32e07d7
TG		 1413 if (addr & BFD_MACH_O_SR_SCATTERED)
1414 {
1415 unsigned int j;
19765f52 1416 bfd_vma symnum = bfd_get_32 (abfd, raw->r_symbolnum);
b32e07d7 1417
19765f52 1418 /* Scattered relocation, can't be extern. */
bcb51645
TG		 1419 reloc->r_scattered = 1;
1420 reloc->r_extern = 0;
19765f52
IS		 1421
1422 /* Extract section and offset from r_value (symnum). */
bcb51645 1423 reloc->r_value = symnum;
19765f52
IS		 1424 /* FIXME: This breaks when a symbol in a reloc exactly follows the
1425 end of the data for the section (e.g. in a calculation of section
1426 data length). At present, the symbol will end up associated with
1427 the following section or, if it falls within alignment padding, as
1428 null - which will assert later. */
b32e07d7
TG		 1429 for (j = 0; j < mdata->nsects; j++)
1430 {
1431 bfd_mach_o_section *sect = mdata->sections[j];
1432 if (symnum >= sect->addr && symnum < sect->addr + sect->size)
1433 {
1434 res->sym_ptr_ptr = sect->bfdsection->symbol_ptr_ptr;
1435 res->addend = symnum - sect->addr;
1436 break;
1437 }
1438 }
19765f52
IS		 1439
1440 /* Extract the info and address fields from r_address. */
bcb51645
TG		 1441 reloc->r_type = BFD_MACH_O_GET_SR_TYPE (addr);
1442 reloc->r_length = BFD_MACH_O_GET_SR_LENGTH (addr);
1443 reloc->r_pcrel = addr & BFD_MACH_O_SR_PCREL;
1444 reloc->r_address = BFD_MACH_O_GET_SR_TYPE (addr);
19765f52 1445 res->address = BFD_MACH_O_GET_SR_ADDRESS (addr);
b32e07d7
TG		 1446 }
1447 else
1448 {
19765f52 1449 /* Non-scattered relocation. */
bcb51645
TG		 1450 reloc->r_scattered = 0;
1451 reloc->r_address = addr;
1452 res->address = addr;
f4716ee2 1453
19765f52
IS		 1454 /* The value and info fields have to be extracted dependent on target
1455 endian-ness. */
bcb51645 1456 bfd_mach_o_swap_in_non_scattered_reloc (abfd, reloc, raw->r_symbolnum);
19765f52 1457
bcb51645
TG		 1458 if (!bfd_mach_o_canonicalize_non_scattered_reloc (abfd, reloc,
1459 res, syms))
1460 return FALSE;
b32e07d7 1461 }
f4716ee2
TG		 1462
1463 /* We have set up a reloc with all the information present, so the swapper
1464 can modify address, value and addend fields, if necessary, to convey
1465 information in the generic BFD reloc that is mach-o specific. */
19765f52 1466
bcb51645 1467 return TRUE;
b32e07d7
TG		 1468}
1469
1470static int
1471bfd_mach_o_canonicalize_relocs (bfd *abfd, unsigned long filepos,
1472 unsigned long count,
1473 arelent *res, asymbol **syms)
1474{
bcb51645 1475 bfd_mach_o_backend_data *bed = bfd_mach_o_get_backend_data (abfd);
92bc0e80 1476 unsigned long i;
46d1c23b 1477 struct mach_o_reloc_info_external *native_relocs;
92bc0e80
TG		 1478 bfd_size_type native_size;
1479
92bc0e80 1480 /* Allocate and read relocs. */
b32e07d7 1481 native_size = count * BFD_MACH_O_RELENT_SIZE;
033539e2 1482
64d29018
NC		 1483 /* PR 17512: file: 09477b57. */
1484 if (native_size < count)
1485 return -1;
1486
46d1c23b
TG		 1487 native_relocs =
1488 (struct mach_o_reloc_info_external *) bfd_malloc (native_size);
92bc0e80
TG		 1489 if (native_relocs == NULL)
1490 return -1;
1491
b32e07d7 1492 if (bfd_seek (abfd, filepos, SEEK_SET) != 0
92bc0e80 1493 || bfd_bread (native_relocs, native_size, abfd) != native_size)
b32e07d7
TG		 1494 goto err;
1495
1496 for (i = 0; i < count; i++)
92bc0e80 1497 {
bcb51645
TG		 1498 if (!(*bed->_bfd_mach_o_canonicalize_one_reloc)(abfd, &native_relocs[i],
1499 &res[i], syms))
b32e07d7 1500 goto err;
92bc0e80 1501 }
b32e07d7
TG		 1502 free (native_relocs);
1503 return i;
1504 err:
1505 free (native_relocs);
1506 return -1;
1507}
1508
1509long
1510bfd_mach_o_canonicalize_reloc (bfd *abfd, asection *asect,
1511 arelent **rels, asymbol **syms)
1512{
1513 bfd_mach_o_backend_data *bed = bfd_mach_o_get_backend_data (abfd);
1514 unsigned long i;
1515 arelent *res;
1516
1517 if (asect->reloc_count == 0)
1518 return 0;
1519
1520 /* No need to go further if we don't know how to read relocs. */
bcb51645 1521 if (bed->_bfd_mach_o_canonicalize_one_reloc == NULL)
b32e07d7 1522 return 0;
92bc0e80 1523
dff55db0 1524 if (asect->relocation == NULL)
92bc0e80 1525 {
64d29018
NC		 1526 if (asect->reloc_count * sizeof (arelent) < asect->reloc_count)
1527 return -1;
dff55db0
TG		 1528 res = bfd_malloc (asect->reloc_count * sizeof (arelent));
1529 if (res == NULL)
1530 return -1;
1531
1532 if (bfd_mach_o_canonicalize_relocs (abfd, asect->rel_filepos,
1533 asect->reloc_count, res, syms) < 0)
1534 {
1535 free (res);
1536 return -1;
1537 }
1538 asect->relocation = res;
92bc0e80
TG		 1539 }
1540
dff55db0 1541 res = asect->relocation;
92bc0e80 1542 for (i = 0; i < asect->reloc_count; i++)
b32e07d7
TG		 1543 rels[i] = &res[i];
1544 rels[i] = NULL;
92bc0e80 1545
b32e07d7
TG		 1546 return i;
1547}
92bc0e80 1548
b32e07d7
TG		 1549long
1550bfd_mach_o_get_dynamic_reloc_upper_bound (bfd *abfd)
1551{
1552 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
92bc0e80 1553
b32e07d7
TG		 1554 if (mdata->dysymtab == NULL)
1555 return 1;
dff55db0 1556 return (mdata->dysymtab->nextrel + mdata->dysymtab->nlocrel + 1)
b32e07d7
TG		 1557 * sizeof (arelent *);
1558}
92bc0e80 1559
b32e07d7
TG		 1560long
1561bfd_mach_o_canonicalize_dynamic_reloc (bfd *abfd, arelent **rels,
1562 struct bfd_symbol **syms)
1563{
1564 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
1565 bfd_mach_o_dysymtab_command *dysymtab = mdata->dysymtab;
1566 bfd_mach_o_backend_data *bed = bfd_mach_o_get_backend_data (abfd);
1567 unsigned long i;
1568 arelent *res;
1569
1570 if (dysymtab == NULL)
1571 return 0;
1572 if (dysymtab->nextrel == 0 && dysymtab->nlocrel == 0)
1573 return 0;
1574
1575 /* No need to go further if we don't know how to read relocs. */
bcb51645 1576 if (bed->_bfd_mach_o_canonicalize_one_reloc == NULL)
b32e07d7
TG		 1577 return 0;
1578
dff55db0 1579 if (mdata->dyn_reloc_cache == NULL)
b32e07d7 1580 {
64d29018
NC		 1581 if ((dysymtab->nextrel + dysymtab->nlocrel) * sizeof (arelent)
1582 < (dysymtab->nextrel + dysymtab->nlocrel))
1583 return -1;
1584
dff55db0
TG		 1585 res = bfd_malloc ((dysymtab->nextrel + dysymtab->nlocrel)
1586 * sizeof (arelent));
1587 if (res == NULL)
1588 return -1;
b32e07d7 1589
dff55db0
TG		 1590 if (bfd_mach_o_canonicalize_relocs (abfd, dysymtab->extreloff,
1591 dysymtab->nextrel, res, syms) < 0)
1592 {
1593 free (res);
1594 return -1;
1595 }
1596
1597 if (bfd_mach_o_canonicalize_relocs (abfd, dysymtab->locreloff,
1598 dysymtab->nlocrel,
1599 res + dysymtab->nextrel, syms) < 0)
1600 {
1601 free (res);
1602 return -1;
1603 }
1604
1605 mdata->dyn_reloc_cache = res;
b32e07d7
TG		 1606 }
1607
dff55db0 1608 res = mdata->dyn_reloc_cache;
b32e07d7
TG		 1609 for (i = 0; i < dysymtab->nextrel + dysymtab->nlocrel; i++)
1610 rels[i] = &res[i];
1611 rels[i] = NULL;
92bc0e80
TG		 1612 return i;
1613}
1614
19765f52
IS		 1615/* In addition to the need to byte-swap the symbol number, the bit positions
1616 of the fields in the relocation information vary per target endian-ness. */
1617
1618static void
1619bfd_mach_o_swap_out_non_scattered_reloc (bfd *abfd, unsigned char *fields,
1620 bfd_mach_o_reloc_info *rel)
1621{
1622 unsigned char info = 0;
1623
1624 BFD_ASSERT (rel->r_type <= 15);
1625 BFD_ASSERT (rel->r_length <= 3);
1626
1627 if (bfd_big_endian (abfd))
1628 {
1629 fields[0] = (rel->r_value >> 16) & 0xff;
1630 fields[1] = (rel->r_value >> 8) & 0xff;
1631 fields[2] = rel->r_value & 0xff;
1632 info |= rel->r_type << BFD_MACH_O_BE_TYPE_SHIFT;
1633 info |= rel->r_pcrel ? BFD_MACH_O_BE_PCREL : 0;
1634 info |= rel->r_length << BFD_MACH_O_BE_LENGTH_SHIFT;
1635 info |= rel->r_extern ? BFD_MACH_O_BE_EXTERN : 0;
1636 }
1637 else
1638 {
1639 fields[2] = (rel->r_value >> 16) & 0xff;
1640 fields[1] = (rel->r_value >> 8) & 0xff;
1641 fields[0] = rel->r_value & 0xff;
1642 info |= rel->r_type << BFD_MACH_O_LE_TYPE_SHIFT;
1643 info |= rel->r_pcrel ? BFD_MACH_O_LE_PCREL : 0;
1644 info |= rel->r_length << BFD_MACH_O_LE_LENGTH_SHIFT;
1645 info |= rel->r_extern ? BFD_MACH_O_LE_EXTERN : 0;
1646 }
1647 fields[3] = info;
1648}
1649
92bc0e80 1650static bfd_boolean
ab273af8 1651bfd_mach_o_write_relocs (bfd *abfd, bfd_mach_o_section *section)
92bc0e80 1652{
92bc0e80
TG		 1653 unsigned int i;
1654 arelent **entries;
1655 asection *sec;
1656 bfd_mach_o_backend_data *bed = bfd_mach_o_get_backend_data (abfd);
1657
1658 sec = section->bfdsection;
1659 if (sec->reloc_count == 0)
1660 return TRUE;
1661
1662 if (bed->_bfd_mach_o_swap_reloc_out == NULL)
1663 return TRUE;
1664
92bc0e80
TG		 1665 if (bfd_seek (abfd, section->reloff, SEEK_SET) != 0)
1666 return FALSE;
1667
1668 /* Convert and write. */
1669 entries = section->bfdsection->orelocation;
1670 for (i = 0; i < section->nreloc; i++)
1671 {
1672 arelent *rel = entries[i];
46d1c23b 1673 struct mach_o_reloc_info_external raw;
92bc0e80
TG		 1674 bfd_mach_o_reloc_info info, *pinfo = &info;
1675
1676 /* Convert relocation to an intermediate representation. */
1677 if (!(*bed->_bfd_mach_o_swap_reloc_out) (rel, pinfo))
1678 return FALSE;
1679
1680 /* Lower the relocation info. */
1681 if (pinfo->r_scattered)
1682 {
1683 unsigned long v;
1684
1685 v = BFD_MACH_O_SR_SCATTERED
1686 | (pinfo->r_pcrel ? BFD_MACH_O_SR_PCREL : 0)
ca148c5a
TG		 1687 | BFD_MACH_O_SET_SR_LENGTH (pinfo->r_length)
1688 | BFD_MACH_O_SET_SR_TYPE (pinfo->r_type)
1689 | BFD_MACH_O_SET_SR_ADDRESS (pinfo->r_address);
46d1c23b
TG		 1690 /* Note: scattered relocs have field in reverse order... */
1691 bfd_put_32 (abfd, v, raw.r_address);
1692 bfd_put_32 (abfd, pinfo->r_value, raw.r_symbolnum);
92bc0e80
TG		 1693 }
1694 else
1695 {
46d1c23b 1696 bfd_put_32 (abfd, pinfo->r_address, raw.r_address);
19765f52
IS		 1697 bfd_mach_o_swap_out_non_scattered_reloc (abfd, raw.r_symbolnum,
1698 pinfo);
92bc0e80
TG		 1699 }
1700
46d1c23b 1701 if (bfd_bwrite (&raw, BFD_MACH_O_RELENT_SIZE, abfd)
92bc0e80
TG		 1702 != BFD_MACH_O_RELENT_SIZE)
1703 return FALSE;
1704 }
1705 return TRUE;
1706}
1707
452216ab 1708static bfd_boolean
ab273af8 1709bfd_mach_o_write_section_32 (bfd *abfd, bfd_mach_o_section *section)
116c20d2 1710{
46d1c23b
TG		 1711 struct mach_o_section_32_external raw;
1712
1713 memcpy (raw.sectname, section->sectname, 16);
72b5104c 1714 memcpy (raw.segname, section->segname, 16);
46d1c23b
TG		 1715 bfd_h_put_32 (abfd, section->addr, raw.addr);
1716 bfd_h_put_32 (abfd, section->size, raw.size);
1717 bfd_h_put_32 (abfd, section->offset, raw.offset);
1718 bfd_h_put_32 (abfd, section->align, raw.align);
1719 bfd_h_put_32 (abfd, section->reloff, raw.reloff);
1720 bfd_h_put_32 (abfd, section->nreloc, raw.nreloc);
1721 bfd_h_put_32 (abfd, section->flags, raw.flags);
1722 bfd_h_put_32 (abfd, section->reserved1, raw.reserved1);
1723 bfd_h_put_32 (abfd, section->reserved2, raw.reserved2);
1724
1725 if (bfd_bwrite (&raw, BFD_MACH_O_SECTION_SIZE, abfd)
92bc0e80 1726 != BFD_MACH_O_SECTION_SIZE)
452216ab 1727 return FALSE;
116c20d2 1728
452216ab 1729 return TRUE;
116c20d2
NC		 1730}
1731
452216ab 1732static bfd_boolean
ab273af8 1733bfd_mach_o_write_section_64 (bfd *abfd, bfd_mach_o_section *section)
116c20d2 1734{
46d1c23b
TG		 1735 struct mach_o_section_64_external raw;
1736
1737 memcpy (raw.sectname, section->sectname, 16);
1738 memcpy (raw.segname, section->segname, 16);
1739 bfd_h_put_64 (abfd, section->addr, raw.addr);
1740 bfd_h_put_64 (abfd, section->size, raw.size);
1741 bfd_h_put_32 (abfd, section->offset, raw.offset);
1742 bfd_h_put_32 (abfd, section->align, raw.align);
1743 bfd_h_put_32 (abfd, section->reloff, raw.reloff);
1744 bfd_h_put_32 (abfd, section->nreloc, raw.nreloc);
1745 bfd_h_put_32 (abfd, section->flags, raw.flags);
1746 bfd_h_put_32 (abfd, section->reserved1, raw.reserved1);
1747 bfd_h_put_32 (abfd, section->reserved2, raw.reserved2);
1748 bfd_h_put_32 (abfd, section->reserved3, raw.reserved3);
1749
1750 if (bfd_bwrite (&raw, BFD_MACH_O_SECTION_64_SIZE, abfd)
92bc0e80 1751 != BFD_MACH_O_SECTION_64_SIZE)
452216ab 1752 return FALSE;
116c20d2 1753
452216ab 1754 return TRUE;
1e8a024a
TG		 1755}
1756
452216ab 1757static bfd_boolean
ab273af8 1758bfd_mach_o_write_segment_32 (bfd *abfd, bfd_mach_o_load_command *command)
1e8a024a 1759{
46d1c23b 1760 struct mach_o_segment_command_32_external raw;
1e8a024a 1761 bfd_mach_o_segment_command *seg = &command->command.segment;
f1bde64c 1762 bfd_mach_o_section *sec;
1e8a024a 1763
c2f09c75
TG		 1764 BFD_ASSERT (command->type == BFD_MACH_O_LC_SEGMENT);
1765
f1bde64c
TG		 1766 for (sec = seg->sect_head; sec != NULL; sec = sec->next)
1767 if (!bfd_mach_o_write_relocs (abfd, sec))
452216ab 1768 return FALSE;
c2f09c75 1769
46d1c23b
TG		 1770 memcpy (raw.segname, seg->segname, 16);
1771 bfd_h_put_32 (abfd, seg->vmaddr, raw.vmaddr);
1772 bfd_h_put_32 (abfd, seg->vmsize, raw.vmsize);
1773 bfd_h_put_32 (abfd, seg->fileoff, raw.fileoff);
1774 bfd_h_put_32 (abfd, seg->filesize, raw.filesize);
1775 bfd_h_put_32 (abfd, seg->maxprot, raw.maxprot);
1776 bfd_h_put_32 (abfd, seg->initprot, raw.initprot);
1777 bfd_h_put_32 (abfd, seg->nsects, raw.nsects);
1778 bfd_h_put_32 (abfd, seg->flags, raw.flags);
68ffbac6 1779
46d1c23b
TG		 1780 if (bfd_seek (abfd, command->offset + BFD_MACH_O_LC_SIZE, SEEK_SET) != 0
1781 || bfd_bwrite (&raw, sizeof (raw), abfd) != sizeof (raw))
452216ab 1782 return FALSE;
1e8a024a 1783
f1bde64c 1784 for (sec = seg->sect_head; sec != NULL; sec = sec->next)
452216ab
TG		 1785 if (!bfd_mach_o_write_section_32 (abfd, sec))
1786 return FALSE;
1e8a024a 1787
452216ab 1788 return TRUE;
116c20d2
NC		 1789}
1790
452216ab 1791static bfd_boolean
ab273af8 1792bfd_mach_o_write_segment_64 (bfd *abfd, bfd_mach_o_load_command *command)
1e8a024a 1793{
46d1c23b 1794 struct mach_o_segment_command_64_external raw;
c2f09c75 1795 bfd_mach_o_segment_command *seg = &command->command.segment;
f1bde64c 1796 bfd_mach_o_section *sec;
c2f09c75
TG		 1797
1798 BFD_ASSERT (command->type == BFD_MACH_O_LC_SEGMENT_64);
1799
f1bde64c
TG		 1800 for (sec = seg->sect_head; sec != NULL; sec = sec->next)
1801 if (!bfd_mach_o_write_relocs (abfd, sec))
452216ab 1802 return FALSE;
c2f09c75 1803
46d1c23b
TG		 1804 memcpy (raw.segname, seg->segname, 16);
1805 bfd_h_put_64 (abfd, seg->vmaddr, raw.vmaddr);
1806 bfd_h_put_64 (abfd, seg->vmsize, raw.vmsize);
1807 bfd_h_put_64 (abfd, seg->fileoff, raw.fileoff);
1808 bfd_h_put_64 (abfd, seg->filesize, raw.filesize);
1809 bfd_h_put_32 (abfd, seg->maxprot, raw.maxprot);
1810 bfd_h_put_32 (abfd, seg->initprot, raw.initprot);
1811 bfd_h_put_32 (abfd, seg->nsects, raw.nsects);
1812 bfd_h_put_32 (abfd, seg->flags, raw.flags);
1813
1814 if (bfd_seek (abfd, command->offset + BFD_MACH_O_LC_SIZE, SEEK_SET) != 0
1815 || bfd_bwrite (&raw, sizeof (raw), abfd) != sizeof (raw))
452216ab 1816 return FALSE;
c2f09c75 1817
f1bde64c 1818 for (sec = seg->sect_head; sec != NULL; sec = sec->next)
452216ab
TG		 1819 if (!bfd_mach_o_write_section_64 (abfd, sec))
1820 return FALSE;
c2f09c75 1821
452216ab 1822 return TRUE;
1e8a024a
TG		 1823}
1824
c2f09c75 1825static bfd_boolean
c9ffd2ea 1826bfd_mach_o_write_symtab_content (bfd *abfd, bfd_mach_o_symtab_command *sym)
116c20d2 1827{
046b007d 1828 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
116c20d2 1829 unsigned long i;
c2f09c75 1830 unsigned int wide = bfd_mach_o_wide_p (abfd);
c2f09c75
TG		 1831 struct bfd_strtab_hash *strtab;
1832 asymbol **symbols = bfd_get_outsymbols (abfd);
c9ffd2ea 1833 int padlen;
c2f09c75
TG		 1834
1835 /* Write the symbols first. */
1836 if (bfd_seek (abfd, sym->symoff, SEEK_SET) != 0)
1837 return FALSE;
1838
c2f09c75
TG		 1839 strtab = _bfd_stringtab_init ();
1840 if (strtab == NULL)
1841 return FALSE;
116c20d2 1842
a4551119
TG		 1843 if (sym->nsyms > 0)
1844 /* Although we don't strictly need to do this, for compatibility with
1845 Darwin system tools, actually output an empty string for the index
1846 0 entry. */
1847 _bfd_stringtab_add (strtab, "", TRUE, FALSE);
1848
116c20d2
NC		 1849 for (i = 0; i < sym->nsyms; i++)
1850 {
91d6fa6a 1851 bfd_size_type str_index;
92bc0e80 1852 bfd_mach_o_asymbol *s = (bfd_mach_o_asymbol *)symbols[i];
68ffbac6 1853
92bc0e80 1854 if (s->symbol.name == 0 || s->symbol.name[0] == '\0')
7f307238 1855 /* An index of 0 always means the empty string. */
91d6fa6a 1856 str_index = 0;
c2f09c75
TG		 1857 else
1858 {
91d6fa6a 1859 str_index = _bfd_stringtab_add (strtab, s->symbol.name, TRUE, FALSE);
7f307238 1860
91d6fa6a 1861 if (str_index == (bfd_size_type) -1)
c2f09c75
TG		 1862 goto err;
1863 }
46d1c23b 1864
c2f09c75 1865 if (wide)
46d1c23b
TG		 1866 {
1867 struct mach_o_nlist_64_external raw;
1868
1869 bfd_h_put_32 (abfd, str_index, raw.n_strx);
1870 bfd_h_put_8 (abfd, s->n_type, raw.n_type);
1871 bfd_h_put_8 (abfd, s->n_sect, raw.n_sect);
1872 bfd_h_put_16 (abfd, s->n_desc, raw.n_desc);
1873 bfd_h_put_64 (abfd, s->symbol.section->vma + s->symbol.value,
1874 raw.n_value);
1875
1876 if (bfd_bwrite (&raw, sizeof (raw), abfd) != sizeof (raw))
1877 goto err;
1878 }
c2f09c75 1879 else
46d1c23b
TG		 1880 {
1881 struct mach_o_nlist_external raw;
116c20d2 1882
46d1c23b
TG		 1883 bfd_h_put_32 (abfd, str_index, raw.n_strx);
1884 bfd_h_put_8 (abfd, s->n_type, raw.n_type);
1885 bfd_h_put_8 (abfd, s->n_sect, raw.n_sect);
1886 bfd_h_put_16 (abfd, s->n_desc, raw.n_desc);
1887 bfd_h_put_32 (abfd, s->symbol.section->vma + s->symbol.value,
1888 raw.n_value);
1889
1890 if (bfd_bwrite (&raw, sizeof (raw), abfd) != sizeof (raw))
1891 goto err;
1892 }
116c20d2 1893 }
c2f09c75 1894 sym->strsize = _bfd_stringtab_size (strtab);
92bc0e80
TG		 1895 sym->stroff = mdata->filelen;
1896 mdata->filelen += sym->strsize;
116c20d2 1897
c9ffd2ea 1898 if (bfd_seek (abfd, sym->stroff, SEEK_SET) != 0)
64d29018 1899 goto err;
c9ffd2ea 1900
c2f09c75
TG		 1901 if (_bfd_stringtab_emit (abfd, strtab) != TRUE)
1902 goto err;
116c20d2 1903
c9ffd2ea
TG		 1904 /* Pad string table. */
1905 padlen = bfd_mach_o_pad4 (abfd, sym->strsize);
1906 if (padlen < 0)
1907 return FALSE;
1908 mdata->filelen += padlen;
1909 sym->strsize += padlen;
116c20d2 1910
c2f09c75 1911 return TRUE;
116c20d2 1912
c2f09c75
TG		 1913 err:
1914 _bfd_stringtab_free (strtab);
64d29018 1915 sym->strsize = 0;
c2f09c75 1916 return FALSE;
116c20d2
NC		 1917}
1918
c9ffd2ea
TG		 1919static bfd_boolean
1920bfd_mach_o_write_symtab (bfd *abfd, bfd_mach_o_load_command *command)
1921{
1922 bfd_mach_o_symtab_command *sym = &command->command.symtab;
1923 struct mach_o_symtab_command_external raw;
1924
1925 BFD_ASSERT (command->type == BFD_MACH_O_LC_SYMTAB);
1926
1927 /* The command. */
1928 bfd_h_put_32 (abfd, sym->symoff, raw.symoff);
1929 bfd_h_put_32 (abfd, sym->nsyms, raw.nsyms);
1930 bfd_h_put_32 (abfd, sym->stroff, raw.stroff);
1931 bfd_h_put_32 (abfd, sym->strsize, raw.strsize);
1932
1933 if (bfd_seek (abfd, command->offset + BFD_MACH_O_LC_SIZE, SEEK_SET) != 0
1934 || bfd_bwrite (&raw, sizeof (raw), abfd) != sizeof (raw))
1935 return FALSE;
1936
1937 return TRUE;
1938}
1939
1940/* Count the number of indirect symbols in the image.
1941 Requires that the sections are in their final order. */
1942
1943static unsigned int
1944bfd_mach_o_count_indirect_symbols (bfd *abfd, bfd_mach_o_data_struct *mdata)
1945{
1946 unsigned int i;
1947 unsigned int nisyms = 0;
1948
1949 for (i = 0; i < mdata->nsects; ++i)
1950 {
1951 bfd_mach_o_section *sec = mdata->sections[i];
1952
1953 switch (sec->flags & BFD_MACH_O_SECTION_TYPE_MASK)
1954 {
1955 case BFD_MACH_O_S_NON_LAZY_SYMBOL_POINTERS:
1956 case BFD_MACH_O_S_LAZY_SYMBOL_POINTERS:
1957 case BFD_MACH_O_S_SYMBOL_STUBS:
1958 nisyms += bfd_mach_o_section_get_nbr_indirect (abfd, sec);
1959 break;
1960 default:
1961 break;
1962 }
1963 }
1964 return nisyms;
1965}
1966
1967/* Create the dysymtab. */
1968
1969static bfd_boolean
1970bfd_mach_o_build_dysymtab (bfd *abfd, bfd_mach_o_dysymtab_command *cmd)
1971{
1972 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
1973
1974 /* TODO:
1975 We are not going to try and fill these in yet and, moreover, we are
1976 going to bail if they are already set. */
1977 if (cmd->nmodtab != 0
1978 || cmd->ntoc != 0
1979 || cmd->nextrefsyms != 0)
1980 {
4eca0228
AM		 1981 _bfd_error_handler (_("sorry: modtab, toc and extrefsyms are not yet"
1982 " implemented for dysymtab commands."));
c9ffd2ea
TG		 1983 return FALSE;
1984 }
1985
1986 cmd->ilocalsym = 0;
1987
1988 if (bfd_get_symcount (abfd) > 0)
1989 {
1990 asymbol **symbols = bfd_get_outsymbols (abfd);
1991 unsigned long i;
1992
1993 /* Count the number of each kind of symbol. */
1994 for (i = 0; i < bfd_get_symcount (abfd); ++i)
1995 {
1996 bfd_mach_o_asymbol *s = (bfd_mach_o_asymbol *)symbols[i];
1997 if (s->n_type & (BFD_MACH_O_N_EXT | BFD_MACH_O_N_PEXT))
1998 break;
1999 }
2000 cmd->nlocalsym = i;
2001 cmd->iextdefsym = i;
2002 for (; i < bfd_get_symcount (abfd); ++i)
2003 {
2004 bfd_mach_o_asymbol *s = (bfd_mach_o_asymbol *)symbols[i];
2005 if ((s->n_type & BFD_MACH_O_N_TYPE) == BFD_MACH_O_N_UNDF)
2006 break;
2007 }
2008 cmd->nextdefsym = i - cmd->nlocalsym;
2009 cmd->iundefsym = cmd->nextdefsym + cmd->iextdefsym;
2010 cmd->nundefsym = bfd_get_symcount (abfd)
2011 - cmd->nlocalsym
2012 - cmd->nextdefsym;
2013 }
2014 else
2015 {
2016 cmd->nlocalsym = 0;
2017 cmd->iextdefsym = 0;
2018 cmd->nextdefsym = 0;
2019 cmd->iundefsym = 0;
2020 cmd->nundefsym = 0;
2021 }
2022
2023 cmd->nindirectsyms = bfd_mach_o_count_indirect_symbols (abfd, mdata);
2024 if (cmd->nindirectsyms > 0)
2025 {
2026 unsigned i;
2027 unsigned n;
2028
2029 mdata->filelen = FILE_ALIGN (mdata->filelen, 2);
2030 cmd->indirectsymoff = mdata->filelen;
2031 mdata->filelen += cmd->nindirectsyms * 4;
2032
64d29018
NC		 2033 if (cmd->nindirectsyms * 4 < cmd->nindirectsyms)
2034 return FALSE;
c9ffd2ea
TG		 2035 cmd->indirect_syms = bfd_zalloc (abfd, cmd->nindirectsyms * 4);
2036 if (cmd->indirect_syms == NULL)
2037 return FALSE;
2038
2039 n = 0;
2040 for (i = 0; i < mdata->nsects; ++i)
2041 {
2042 bfd_mach_o_section *sec = mdata->sections[i];
2043
2044 switch (sec->flags & BFD_MACH_O_SECTION_TYPE_MASK)
2045 {
2046 case BFD_MACH_O_S_NON_LAZY_SYMBOL_POINTERS:
2047 case BFD_MACH_O_S_LAZY_SYMBOL_POINTERS:
2048 case BFD_MACH_O_S_SYMBOL_STUBS:
2049 {
2050 unsigned j, num;
2051 bfd_mach_o_asymbol **isyms = sec->indirect_syms;
2052
2053 num = bfd_mach_o_section_get_nbr_indirect (abfd, sec);
2054 if (isyms == NULL || num == 0)
2055 break;
2056 /* Record the starting index in the reserved1 field. */
2057 sec->reserved1 = n;
2058 for (j = 0; j < num; j++, n++)
2059 {
2060 if (isyms[j] == NULL)
2061 cmd->indirect_syms[n] = BFD_MACH_O_INDIRECT_SYM_LOCAL;
2062 else if (isyms[j]->symbol.section == bfd_abs_section_ptr
2063 && ! (isyms[j]->n_type & BFD_MACH_O_N_EXT))
2064 cmd->indirect_syms[n] = BFD_MACH_O_INDIRECT_SYM_LOCAL
2065 | BFD_MACH_O_INDIRECT_SYM_ABS;
2066 else
2067 cmd->indirect_syms[n] = isyms[j]->symbol.udata.i;
2068 }
2069 }
2070 break;
2071 default:
2072 break;
2073 }
2074 }
2075 }
2076
2077 return TRUE;
2078}
2079
7f307238
IS		 2080/* Write a dysymtab command.
2081 TODO: Possibly coalesce writes of smaller objects. */
2082
2083static bfd_boolean
2084bfd_mach_o_write_dysymtab (bfd *abfd, bfd_mach_o_load_command *command)
2085{
2086 bfd_mach_o_dysymtab_command *cmd = &command->command.dysymtab;
2087
2088 BFD_ASSERT (command->type == BFD_MACH_O_LC_DYSYMTAB);
2089
2090 if (cmd->nmodtab != 0)
2091 {
2092 unsigned int i;
2093
2094 if (bfd_seek (abfd, cmd->modtaboff, SEEK_SET) != 0)
2095 return FALSE;
2096
2097 for (i = 0; i < cmd->nmodtab; i++)
2098 {
2099 bfd_mach_o_dylib_module *module = &cmd->dylib_module[i];
2100 unsigned int iinit;
2101 unsigned int ninit;
2102
2103 iinit = module->iinit & 0xffff;
2104 iinit |= ((module->iterm & 0xffff) << 16);
2105
2106 ninit = module->ninit & 0xffff;
2107 ninit |= ((module->nterm & 0xffff) << 16);
2108
2109 if (bfd_mach_o_wide_p (abfd))
2110 {
2111 struct mach_o_dylib_module_64_external w;
2112
2113 bfd_h_put_32 (abfd, module->module_name_idx, &w.module_name);
2114 bfd_h_put_32 (abfd, module->iextdefsym, &w.iextdefsym);
2115 bfd_h_put_32 (abfd, module->nextdefsym, &w.nextdefsym);
2116 bfd_h_put_32 (abfd, module->irefsym, &w.irefsym);
2117 bfd_h_put_32 (abfd, module->nrefsym, &w.nrefsym);
2118 bfd_h_put_32 (abfd, module->ilocalsym, &w.ilocalsym);
2119 bfd_h_put_32 (abfd, module->nlocalsym, &w.nlocalsym);
2120 bfd_h_put_32 (abfd, module->iextrel, &w.iextrel);
2121 bfd_h_put_32 (abfd, module->nextrel, &w.nextrel);
2122 bfd_h_put_32 (abfd, iinit, &w.iinit_iterm);
2123 bfd_h_put_32 (abfd, ninit, &w.ninit_nterm);
2124 bfd_h_put_64 (abfd, module->objc_module_info_addr,
2125 &w.objc_module_info_addr);
2126 bfd_h_put_32 (abfd, module->objc_module_info_size,
2127 &w.objc_module_info_size);
2128
2129 if (bfd_bwrite ((void *) &w, sizeof (w), abfd) != sizeof (w))
2130 return FALSE;
2131 }
2132 else
2133 {
2134 struct mach_o_dylib_module_external n;
2135
2136 bfd_h_put_32 (abfd, module->module_name_idx, &n.module_name);
2137 bfd_h_put_32 (abfd, module->iextdefsym, &n.iextdefsym);
2138 bfd_h_put_32 (abfd, module->nextdefsym, &n.nextdefsym);
2139 bfd_h_put_32 (abfd, module->irefsym, &n.irefsym);
2140 bfd_h_put_32 (abfd, module->nrefsym, &n.nrefsym);
2141 bfd_h_put_32 (abfd, module->ilocalsym, &n.ilocalsym);
2142 bfd_h_put_32 (abfd, module->nlocalsym, &n.nlocalsym);
2143 bfd_h_put_32 (abfd, module->iextrel, &n.iextrel);
2144 bfd_h_put_32 (abfd, module->nextrel, &n.nextrel);
2145 bfd_h_put_32 (abfd, iinit, &n.iinit_iterm);
2146 bfd_h_put_32 (abfd, ninit, &n.ninit_nterm);
2147 bfd_h_put_32 (abfd, module->objc_module_info_addr,
2148 &n.objc_module_info_addr);
2149 bfd_h_put_32 (abfd, module->objc_module_info_size,
2150 &n.objc_module_info_size);
2151
2152 if (bfd_bwrite ((void *) &n, sizeof (n), abfd) != sizeof (n))
2153 return FALSE;
2154 }
2155 }
2156 }
2157
2158 if (cmd->ntoc != 0)
2159 {
2160 unsigned int i;
2161
2162 if (bfd_seek (abfd, cmd->tocoff, SEEK_SET) != 0)
2163 return FALSE;
2164
2165 for (i = 0; i < cmd->ntoc; i++)
2166 {
2167 struct mach_o_dylib_table_of_contents_external raw;
2168 bfd_mach_o_dylib_table_of_content *toc = &cmd->dylib_toc[i];
2169
2170 bfd_h_put_32 (abfd, toc->symbol_index, &raw.symbol_index);
2171 bfd_h_put_32 (abfd, toc->module_index, &raw.module_index);
2172
2173 if (bfd_bwrite (&raw, sizeof (raw), abfd) != sizeof (raw))
2174 return FALSE;
2175 }
2176 }
68ffbac6 2177
7f307238
IS		 2178 if (cmd->nindirectsyms > 0)
2179 {
2180 unsigned int i;
2181
2182 if (bfd_seek (abfd, cmd->indirectsymoff, SEEK_SET) != 0)
2183 return FALSE;
2184
2185 for (i = 0; i < cmd->nindirectsyms; ++i)
2186 {
2187 unsigned char raw[4];
2188
2189 bfd_h_put_32 (abfd, cmd->indirect_syms[i], &raw);
2190 if (bfd_bwrite (raw, sizeof (raw), abfd) != sizeof (raw))
2191 return FALSE;
68ffbac6 2192 }
7f307238
IS		 2193 }
2194
2195 if (cmd->nextrefsyms != 0)
2196 {
2197 unsigned int i;
2198
2199 if (bfd_seek (abfd, cmd->extrefsymoff, SEEK_SET) != 0)
2200 return FALSE;
2201
2202 for (i = 0; i < cmd->nextrefsyms; i++)
2203 {
2204 unsigned long v;
2205 unsigned char raw[4];
2206 bfd_mach_o_dylib_reference *ref = &cmd->ext_refs[i];
2207
2208 /* Fields isym and flags are written as bit-fields, thus we need
2209 a specific processing for endianness. */
2210
2211 if (bfd_big_endian (abfd))
2212 {
2213 v = ((ref->isym & 0xffffff) << 8);
2214 v |= ref->flags & 0xff;
2215 }
2216 else
2217 {
2218 v = ref->isym & 0xffffff;
2219 v |= ((ref->flags & 0xff) << 24);
2220 }
2221
2222 bfd_h_put_32 (abfd, v, raw);
2223 if (bfd_bwrite (raw, sizeof (raw), abfd) != sizeof (raw))
2224 return FALSE;
2225 }
2226 }
2227
2228 /* The command. */
2229 if (bfd_seek (abfd, command->offset + BFD_MACH_O_LC_SIZE, SEEK_SET) != 0)
2230 return FALSE;
2231 else
2232 {
2233 struct mach_o_dysymtab_command_external raw;
2234
2235 bfd_h_put_32 (abfd, cmd->ilocalsym, &raw.ilocalsym);
2236 bfd_h_put_32 (abfd, cmd->nlocalsym, &raw.nlocalsym);
2237 bfd_h_put_32 (abfd, cmd->iextdefsym, &raw.iextdefsym);
2238 bfd_h_put_32 (abfd, cmd->nextdefsym, &raw.nextdefsym);
2239 bfd_h_put_32 (abfd, cmd->iundefsym, &raw.iundefsym);
2240 bfd_h_put_32 (abfd, cmd->nundefsym, &raw.nundefsym);
2241 bfd_h_put_32 (abfd, cmd->tocoff, &raw.tocoff);
2242 bfd_h_put_32 (abfd, cmd->ntoc, &raw.ntoc);
2243 bfd_h_put_32 (abfd, cmd->modtaboff, &raw.modtaboff);
2244 bfd_h_put_32 (abfd, cmd->nmodtab, &raw.nmodtab);
2245 bfd_h_put_32 (abfd, cmd->extrefsymoff, &raw.extrefsymoff);
2246 bfd_h_put_32 (abfd, cmd->nextrefsyms, &raw.nextrefsyms);
2247 bfd_h_put_32 (abfd, cmd->indirectsymoff, &raw.indirectsymoff);
2248 bfd_h_put_32 (abfd, cmd->nindirectsyms, &raw.nindirectsyms);
2249 bfd_h_put_32 (abfd, cmd->extreloff, &raw.extreloff);
2250 bfd_h_put_32 (abfd, cmd->nextrel, &raw.nextrel);
2251 bfd_h_put_32 (abfd, cmd->locreloff, &raw.locreloff);
2252 bfd_h_put_32 (abfd, cmd->nlocrel, &raw.nlocrel);
2253
2254 if (bfd_bwrite (&raw, sizeof (raw), abfd) != sizeof (raw))
2255 return FALSE;
2256 }
2257
2258 return TRUE;
2259}
2260
2261static unsigned
b22161d6 2262bfd_mach_o_primary_symbol_sort_key (bfd_mach_o_asymbol *s)
7f307238 2263{
b22161d6 2264 unsigned mtyp = s->n_type & BFD_MACH_O_N_TYPE;
68588f95
IS		 2265
2266 /* Just leave debug symbols where they are (pretend they are local, and
2267 then they will just be sorted on position). */
b22161d6 2268 if (s->n_type & BFD_MACH_O_N_STAB)
68588f95
IS		 2269 return 0;
2270
7f307238 2271 /* Local (we should never see an undefined local AFAICT). */
b22161d6 2272 if (! (s->n_type & (BFD_MACH_O_N_EXT | BFD_MACH_O_N_PEXT)))
7f307238
IS		 2273 return 0;
2274
2275 /* Common symbols look like undefined externs. */
68588f95 2276 if (mtyp == BFD_MACH_O_N_UNDF)
7f307238
IS		 2277 return 2;
2278
b22161d6 2279 /* A defined non-local, non-debug symbol. */
7f307238
IS		 2280 return 1;
2281}
2282
2283static int
2284bfd_mach_o_cf_symbols (const void *a, const void *b)
2285{
2286 bfd_mach_o_asymbol *sa = *(bfd_mach_o_asymbol **) a;
2287 bfd_mach_o_asymbol *sb = *(bfd_mach_o_asymbol **) b;
2288 unsigned int soa, sob;
2289
b22161d6
IS		 2290 soa = bfd_mach_o_primary_symbol_sort_key (sa);
2291 sob = bfd_mach_o_primary_symbol_sort_key (sb);
7f307238
IS		 2292 if (soa < sob)
2293 return -1;
2294
2295 if (soa > sob)
2296 return 1;
2297
68588f95 2298 /* If it's local or stab, just preserve the input order. */
7f307238
IS		 2299 if (soa == 0)
2300 {
2301 if (sa->symbol.udata.i < sb->symbol.udata.i)
2302 return -1;
2303 if (sa->symbol.udata.i > sb->symbol.udata.i)
2304 return 1;
b22161d6
IS		 2305
2306 /* This is probably an error. */
7f307238
IS		 2307 return 0;
2308 }
2309
b22161d6
IS		 2310 /* The second sort key is name. */
2311 return strcmp (sa->symbol.name, sb->symbol.name);
7f307238
IS		 2312}
2313
2314/* Process the symbols.
2315
2316 This should be OK for single-module files - but it is not likely to work
2317 for multi-module shared libraries.
2318
2319 (a) If the application has not filled in the relevant mach-o fields, make
2320 an estimate.
2321
2322 (b) Order them, like this:
2323 ( i) local.
2324 (unsorted)
2325 ( ii) external defined
2326 (by name)
b22161d6 2327 (iii) external undefined/common
7f307238
IS		 2328 (by name)
2329 ( iv) common
2330 (by name)
b22161d6 2331*/
92bc0e80
TG		 2332
2333static bfd_boolean
b22161d6 2334bfd_mach_o_mangle_symbols (bfd *abfd)
92bc0e80
TG		 2335{
2336 unsigned long i;
2337 asymbol **symbols = bfd_get_outsymbols (abfd);
2338
7f307238
IS		 2339 if (symbols == NULL || bfd_get_symcount (abfd) == 0)
2340 return TRUE;
2341
92bc0e80
TG		 2342 for (i = 0; i < bfd_get_symcount (abfd); i++)
2343 {
2344 bfd_mach_o_asymbol *s = (bfd_mach_o_asymbol *)symbols[i];
2345
b22161d6
IS		 2346 /* We use this value, which is out-of-range as a symbol index, to signal
2347 that the mach-o-specific data are not filled in and need to be created
2348 from the bfd values. It is much preferable for the application to do
2349 this, since more meaningful diagnostics can be made that way. */
2350
2351 if (s->symbol.udata.i == SYM_MACHO_FIELDS_UNSET)
92bc0e80 2352 {
b22161d6
IS		 2353 /* No symbol information has been set - therefore determine
2354 it from the bfd symbol flags/info. */
92bc0e80
TG		 2355 if (s->symbol.section == bfd_abs_section_ptr)
2356 s->n_type = BFD_MACH_O_N_ABS;
2357 else if (s->symbol.section == bfd_und_section_ptr)
2358 {
2359 s->n_type = BFD_MACH_O_N_UNDF;
2360 if (s->symbol.flags & BSF_WEAK)
2361 s->n_desc |= BFD_MACH_O_N_WEAK_REF;
7f307238
IS		 2362 /* mach-o automatically makes undefined symbols extern. */
2363 s->n_type |= BFD_MACH_O_N_EXT;
b22161d6 2364 s->symbol.flags |= BSF_GLOBAL;
92bc0e80
TG		 2365 }
2366 else if (s->symbol.section == bfd_com_section_ptr)
b22161d6
IS		 2367 {
2368 s->n_type = BFD_MACH_O_N_UNDF | BFD_MACH_O_N_EXT;
2369 s->symbol.flags |= BSF_GLOBAL;
2370 }
92bc0e80
TG		 2371 else
2372 s->n_type = BFD_MACH_O_N_SECT;
68ffbac6 2373
92bc0e80
TG		 2374 if (s->symbol.flags & BSF_GLOBAL)
2375 s->n_type |= BFD_MACH_O_N_EXT;
2376 }
2377
7f307238 2378 /* Put the section index in, where required. */
68588f95 2379 if ((s->symbol.section != bfd_abs_section_ptr
92bc0e80
TG		 2380 && s->symbol.section != bfd_und_section_ptr
2381 && s->symbol.section != bfd_com_section_ptr)
68588f95
IS		 2382 || ((s->n_type & BFD_MACH_O_N_STAB) != 0
2383 && s->symbol.name == NULL))
707e555b 2384 s->n_sect = s->symbol.section->output_section->target_index;
92bc0e80 2385
b22161d6
IS		 2386 /* Number to preserve order for local and debug syms. */
2387 s->symbol.udata.i = i;
7f307238
IS		 2388 }
2389
b22161d6
IS		 2390 /* Sort the symbols. */
2391 qsort ((void *) symbols, (size_t) bfd_get_symcount (abfd),
2392 sizeof (asymbol *), bfd_mach_o_cf_symbols);
7f307238 2393
b22161d6
IS		 2394 for (i = 0; i < bfd_get_symcount (abfd); ++i)
2395 {
2396 bfd_mach_o_asymbol *s = (bfd_mach_o_asymbol *)symbols[i];
2397 s->symbol.udata.i = i; /* renumber. */
7f307238
IS		 2398 }
2399
2400 return TRUE;
2401}
2402
2403/* We build a flat table of sections, which can be re-ordered if necessary.
2404 Fill in the section number and other mach-o-specific data. */
2405
2406static bfd_boolean
2407bfd_mach_o_mangle_sections (bfd *abfd, bfd_mach_o_data_struct *mdata)
2408{
2409 asection *sec;
2410 unsigned target_index;
2411 unsigned nsect;
2412
2413 nsect = bfd_count_sections (abfd);
68ffbac6 2414
7f307238
IS		 2415 /* Don't do it if it's already set - assume the application knows what it's
2416 doing. */
2417 if (mdata->nsects == nsect
2418 && (mdata->nsects == 0 || mdata->sections != NULL))
2419 return TRUE;
2420
a1165289
NC		 2421 /* We need to check that this can be done... */
2422 if (nsect > 255)
2423 {
4eca0228
AM		 2424 _bfd_error_handler (_("mach-o: there are too many sections (%u)"
2425 " maximum is 255,\n"), nsect);
a1165289
NC		 2426 return FALSE;
2427 }
2428
7f307238 2429 mdata->nsects = nsect;
64d29018
NC		 2430 mdata->sections = bfd_alloc2 (abfd,
2431 mdata->nsects, sizeof (bfd_mach_o_section *));
7f307238
IS		 2432 if (mdata->sections == NULL)
2433 return FALSE;
2434
7f307238 2435 /* Create Mach-O sections.
68ffbac6 2436 Section type, attribute and align should have been set when the
7f307238
IS		 2437 section was created - either read in or specified. */
2438 target_index = 0;
2439 for (sec = abfd->sections; sec; sec = sec->next)
2440 {
2441 unsigned bfd_align = bfd_get_section_alignment (abfd, sec);
2442 bfd_mach_o_section *msect = bfd_mach_o_get_mach_o_section (sec);
2443
2444 mdata->sections[target_index] = msect;
2445
2446 msect->addr = bfd_get_section_vma (abfd, sec);
2447 msect->size = bfd_get_section_size (sec);
2448
68ffbac6 2449 /* Use the largest alignment set, in case it was bumped after the
7f307238
IS		 2450 section was created. */
2451 msect->align = msect->align > bfd_align ? msect->align : bfd_align;
2452
2453 msect->offset = 0;
2454 sec->target_index = ++target_index;
92bc0e80 2455 }
7f307238 2456
92bc0e80
TG		 2457 return TRUE;
2458}
2459
154a1ee5 2460bfd_boolean
116c20d2 2461bfd_mach_o_write_contents (bfd *abfd)
3af9a47b 2462{
046b007d 2463 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
c9ffd2ea
TG		 2464 bfd_mach_o_load_command *cmd;
2465 bfd_mach_o_symtab_command *symtab = NULL;
2466 bfd_mach_o_dysymtab_command *dysymtab = NULL;
2467 bfd_mach_o_segment_command *linkedit = NULL;
3af9a47b 2468
7f307238 2469 /* Make the commands, if not already present. */
c9ffd2ea
TG		 2470 if (!abfd->output_has_begun && !bfd_mach_o_build_commands (abfd))
2471 return FALSE;
2472 abfd->output_has_begun = TRUE;
92bc0e80 2473
c9ffd2ea 2474 /* Write the header. */
154a1ee5 2475 if (!bfd_mach_o_write_header (abfd, &mdata->header))
b34976b6 2476 return FALSE;
3af9a47b 2477
c9ffd2ea
TG		 2478 /* First pass: allocate the linkedit segment. */
2479 for (cmd = mdata->first_command; cmd != NULL; cmd = cmd->next)
2480 switch (cmd->type)
2481 {
2482 case BFD_MACH_O_LC_SEGMENT_64:
2483 case BFD_MACH_O_LC_SEGMENT:
2484 if (strcmp (cmd->command.segment.segname, "__LINKEDIT") == 0)
2485 linkedit = &cmd->command.segment;
2486 break;
2487 case BFD_MACH_O_LC_SYMTAB:
2488 symtab = &cmd->command.symtab;
2489 break;
2490 case BFD_MACH_O_LC_DYSYMTAB:
2491 dysymtab = &cmd->command.dysymtab;
2492 break;
2493 case BFD_MACH_O_LC_DYLD_INFO:
2494 {
2495 bfd_mach_o_dyld_info_command *di = &cmd->command.dyld_info;
2496
2497 if (di->rebase_size != 0)
2498 {
2499 di->rebase_off = mdata->filelen;
2500 mdata->filelen += di->rebase_size;
2501 }
2502 if (di->bind_size != 0)
2503 {
2504 di->bind_off = mdata->filelen;
2505 mdata->filelen += di->bind_size;
2506 }
2507 if (di->weak_bind_size != 0)
2508 {
2509 di->weak_bind_off = mdata->filelen;
2510 mdata->filelen += di->weak_bind_size;
2511 }
2512 if (di->lazy_bind_size != 0)
2513 {
2514 di->lazy_bind_off = mdata->filelen;
2515 mdata->filelen += di->lazy_bind_size;
2516 }
2517 if (di->export_size != 0)
2518 {
2519 di->export_off = mdata->filelen;
2520 mdata->filelen += di->export_size;
2521 }
2522 }
2523 break;
2524 case BFD_MACH_O_LC_LOAD_DYLIB:
2525 case BFD_MACH_O_LC_LOAD_DYLINKER:
2526 case BFD_MACH_O_LC_MAIN:
2527 /* Nothing to do. */
2528 break;
2529 default:
4eca0228 2530 _bfd_error_handler
c9ffd2ea
TG		 2531 (_("unable to allocate data for load command 0x%lx"),
2532 (unsigned long) cmd->type);
2533 break;
2534 }
2535
2536 /* Specially handle symtab and dysymtab. */
2537
2538 /* Pre-allocate the symbol table (but not the string table). The reason
2539 is that the dysymtab is after the symbol table but before the string
2540 table (required by the native strip tool). */
2541 if (symtab != NULL)
2542 {
2543 unsigned int symlen;
2544 unsigned int wide = bfd_mach_o_wide_p (abfd);
2545
2546 symlen = wide ? BFD_MACH_O_NLIST_64_SIZE : BFD_MACH_O_NLIST_SIZE;
2547
2548 /* Align for symbols. */
2549 mdata->filelen = FILE_ALIGN (mdata->filelen, wide ? 3 : 2);
2550 symtab->symoff = mdata->filelen;
2551
2552 symtab->nsyms = bfd_get_symcount (abfd);
2553 mdata->filelen += symtab->nsyms * symlen;
2554 }
2555
2556 /* Build the dysymtab. */
2557 if (dysymtab != NULL)
2558 if (!bfd_mach_o_build_dysymtab (abfd, dysymtab))
2559 return FALSE;
2560
2561 /* Write symtab and strtab. */
2562 if (symtab != NULL)
2563 if (!bfd_mach_o_write_symtab_content (abfd, symtab))
2564 return FALSE;
2565
2566 /* Adjust linkedit size. */
2567 if (linkedit != NULL)
2568 {
2569 /* bfd_vma pagemask = bfd_mach_o_get_backend_data (abfd)->page_size - 1; */
2570
2571 linkedit->vmsize = mdata->filelen - linkedit->fileoff;
2572 /* linkedit->vmsize = (linkedit->vmsize + pagemask) & ~pagemask; */
2573 linkedit->filesize = mdata->filelen - linkedit->fileoff;
2574
2575 linkedit->initprot = BFD_MACH_O_PROT_READ;
2576 linkedit->maxprot = BFD_MACH_O_PROT_READ | BFD_MACH_O_PROT_WRITE
2577 | BFD_MACH_O_PROT_EXECUTE;
2578 }
2579
2580 /* Second pass: write commands. */
2581 for (cmd = mdata->first_command; cmd != NULL; cmd = cmd->next)
3af9a47b 2582 {
46d1c23b 2583 struct mach_o_load_command_external raw;
3af9a47b
NC		 2584 unsigned long typeflag;
2585
c9ffd2ea 2586 typeflag = cmd->type | (cmd->type_required ? BFD_MACH_O_LC_REQ_DYLD : 0);
3af9a47b 2587
46d1c23b 2588 bfd_h_put_32 (abfd, typeflag, raw.cmd);
c9ffd2ea 2589 bfd_h_put_32 (abfd, cmd->len, raw.cmdsize);
3af9a47b 2590
c9ffd2ea 2591 if (bfd_seek (abfd, cmd->offset, SEEK_SET) != 0
46d1c23b 2592 || bfd_bwrite (&raw, BFD_MACH_O_LC_SIZE, abfd) != 8)
b34976b6 2593 return FALSE;
3af9a47b 2594
c9ffd2ea 2595 switch (cmd->type)
3af9a47b
NC		 2596 {
2597 case BFD_MACH_O_LC_SEGMENT:
c9ffd2ea 2598 if (!bfd_mach_o_write_segment_32 (abfd, cmd))
1e8a024a
TG		 2599 return FALSE;
2600 break;
2601 case BFD_MACH_O_LC_SEGMENT_64:
c9ffd2ea 2602 if (!bfd_mach_o_write_segment_64 (abfd, cmd))
b34976b6 2603 return FALSE;
3af9a47b
NC		 2604 break;
2605 case BFD_MACH_O_LC_SYMTAB:
c9ffd2ea 2606 if (!bfd_mach_o_write_symtab (abfd, cmd))
b34976b6 2607 return FALSE;
3af9a47b 2608 break;
7f307238 2609 case BFD_MACH_O_LC_DYSYMTAB:
c9ffd2ea 2610 if (!bfd_mach_o_write_dysymtab (abfd, cmd))
7f307238
IS		 2611 return FALSE;
2612 break;
3af9a47b
NC		 2613 case BFD_MACH_O_LC_THREAD:
2614 case BFD_MACH_O_LC_UNIXTHREAD:
c9ffd2ea 2615 if (!bfd_mach_o_write_thread (abfd, cmd))
b34976b6 2616 return FALSE;
3af9a47b 2617 break;
3af9a47b 2618 case BFD_MACH_O_LC_LOAD_DYLIB:
c9ffd2ea
TG		 2619 if (!bfd_mach_o_write_dylib (abfd, cmd))
2620 return FALSE;
2621 break;
3af9a47b 2622 case BFD_MACH_O_LC_LOAD_DYLINKER:
c9ffd2ea
TG		 2623 if (!bfd_mach_o_write_dylinker (abfd, cmd))
2624 return FALSE;
2625 break;
2626 case BFD_MACH_O_LC_MAIN:
2627 if (!bfd_mach_o_write_main (abfd, cmd))
2628 return FALSE;
2629 break;
2630 case BFD_MACH_O_LC_DYLD_INFO:
2631 if (!bfd_mach_o_write_dyld_info (abfd, cmd))
2632 return FALSE;
3af9a47b
NC		 2633 break;
2634 default:
4eca0228 2635 _bfd_error_handler
3cc27770 2636 (_("unable to write unknown load command 0x%lx"),
c9ffd2ea 2637 (unsigned long) cmd->type);
b34976b6 2638 return FALSE;
3af9a47b
NC		 2639 }
2640 }
2641
b34976b6 2642 return TRUE;
3af9a47b
NC		 2643}
2644
f1bde64c
TG		 2645static void
2646bfd_mach_o_append_section_to_segment (bfd_mach_o_segment_command *seg,
c9ffd2ea 2647 bfd_mach_o_section *s)
f1bde64c 2648{
f1bde64c
TG		 2649 if (seg->sect_head == NULL)
2650 seg->sect_head = s;
2651 else
2652 seg->sect_tail->next = s;
2653 seg->sect_tail = s;
2654}
2655
2656/* Create section Mach-O flags from BFD flags. */
2657
2658static void
3cc27770
TG		 2659bfd_mach_o_set_section_flags_from_bfd (bfd *abfd ATTRIBUTE_UNUSED,
2660 asection *sec)
f1bde64c
TG		 2661{
2662 flagword bfd_flags;
2663 bfd_mach_o_section *s = bfd_mach_o_get_mach_o_section (sec);
2664
2665 /* Create default flags. */
2666 bfd_flags = bfd_get_section_flags (abfd, sec);
2667 if ((bfd_flags & SEC_CODE) == SEC_CODE)
2668 s->flags = BFD_MACH_O_S_ATTR_PURE_INSTRUCTIONS
2669 | BFD_MACH_O_S_ATTR_SOME_INSTRUCTIONS
2670 | BFD_MACH_O_S_REGULAR;
2671 else if ((bfd_flags & (SEC_ALLOC | SEC_LOAD)) == SEC_ALLOC)
2672 s->flags = BFD_MACH_O_S_ZEROFILL;
2673 else if (bfd_flags & SEC_DEBUGGING)
2674 s->flags = BFD_MACH_O_S_REGULAR | BFD_MACH_O_S_ATTR_DEBUG;
2675 else
2676 s->flags = BFD_MACH_O_S_REGULAR;
2677}
2678
7f307238 2679static bfd_boolean
c9ffd2ea 2680bfd_mach_o_build_obj_seg_command (bfd *abfd, bfd_mach_o_segment_command *seg)
7f307238 2681{
c9ffd2ea
TG		 2682 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
2683 unsigned int i, j;
7f307238 2684
7f307238 2685 seg->vmaddr = 0;
7f307238 2686 seg->fileoff = mdata->filelen;
c9ffd2ea
TG		 2687 seg->initprot = BFD_MACH_O_PROT_READ | BFD_MACH_O_PROT_WRITE
2688 | BFD_MACH_O_PROT_EXECUTE;
2689 seg->maxprot = seg->initprot;
7f307238 2690
68ffbac6 2691 /* Append sections to the segment.
09903f4b
IS		 2692
2693 This is a little tedious, we have to honor the need to account zerofill
2694 sections after all the rest. This forces us to do the calculation of
68ffbac6 2695 total vmsize in three passes so that any alignment increments are
09903f4b 2696 properly accounted. */
7f307238
IS		 2697 for (i = 0; i < mdata->nsects; ++i)
2698 {
2699 bfd_mach_o_section *s = mdata->sections[i];
2700 asection *sec = s->bfdsection;
2701
09903f4b
IS		 2702 /* Although we account for zerofill section sizes in vm order, they are
2703 placed in the file in source sequence. */
c9ffd2ea 2704 bfd_mach_o_append_section_to_segment (seg, s);
e5081f2f 2705 s->offset = 0;
68ffbac6 2706
c9ffd2ea
TG		 2707 /* Zerofill sections have zero file size & offset, the only content
2708 written to the file is the symbols. */
e5081f2f 2709 if ((s->flags & BFD_MACH_O_SECTION_TYPE_MASK) == BFD_MACH_O_S_ZEROFILL
c9ffd2ea
TG		 2710 || ((s->flags & BFD_MACH_O_SECTION_TYPE_MASK)
2711 == BFD_MACH_O_S_GB_ZEROFILL))
e5081f2f
IS		 2712 continue;
2713
c9ffd2ea
TG		 2714 /* The Darwin system tools (in MH_OBJECT files, at least) always account
2715 sections, even those with zero size. */
e5081f2f 2716 if (s->size > 0)
c9ffd2ea 2717 {
09903f4b
IS		 2718 seg->vmsize = FILE_ALIGN (seg->vmsize, s->align);
2719 seg->vmsize += s->size;
2720
c9ffd2ea
TG		 2721 /* MH_OBJECT files have unaligned content. */
2722 if (1)
2723 {
2724 seg->filesize = FILE_ALIGN (seg->filesize, s->align);
2725 mdata->filelen = FILE_ALIGN (mdata->filelen, s->align);
2726 }
09903f4b
IS		 2727 seg->filesize += s->size;
2728
c9ffd2ea
TG		 2729 /* The system tools write even zero-sized sections with an offset
2730 field set to the current file position. */
7f307238 2731 s->offset = mdata->filelen;
c9ffd2ea 2732 }
7f307238
IS		 2733
2734 sec->filepos = s->offset;
7f307238
IS		 2735 mdata->filelen += s->size;
2736 }
2737
3cc27770 2738 /* Now pass through again, for zerofill, only now we just update the
c9ffd2ea
TG		 2739 vmsize, and then for zerofill_GB. */
2740 for (j = 0; j < 2; j++)
09903f4b 2741 {
c9ffd2ea 2742 unsigned int stype;
68ffbac6 2743
c9ffd2ea
TG		 2744 if (j == 0)
2745 stype = BFD_MACH_O_S_ZEROFILL;
2746 else
2747 stype = BFD_MACH_O_S_GB_ZEROFILL;
09903f4b 2748
c9ffd2ea
TG		 2749 for (i = 0; i < mdata->nsects; ++i)
2750 {
2751 bfd_mach_o_section *s = mdata->sections[i];
2752
2753 if ((s->flags & BFD_MACH_O_SECTION_TYPE_MASK) != stype)
2754 continue;
2755
2756 if (s->size > 0)
2757 {
2758 seg->vmsize = FILE_ALIGN (seg->vmsize, s->align);
2759 seg->vmsize += s->size;
2760 }
09903f4b
IS		 2761 }
2762 }
bb76d940 2763
09903f4b 2764 /* Allocate space for the relocations. */
707e555b 2765 mdata->filelen = FILE_ALIGN (mdata->filelen, 2);
bb76d940
IS		 2766
2767 for (i = 0; i < mdata->nsects; ++i)
2768 {
2769 bfd_mach_o_section *ms = mdata->sections[i];
2770 asection *sec = ms->bfdsection;
68ffbac6 2771
c9ffd2ea
TG		 2772 ms->nreloc = sec->reloc_count;
2773 if (ms->nreloc == 0)
bb76d940 2774 {
c9ffd2ea 2775 /* Clear nreloc and reloff if there is no relocs. */
bb76d940
IS		 2776 ms->reloff = 0;
2777 continue;
2778 }
2779 sec->rel_filepos = mdata->filelen;
2780 ms->reloff = sec->rel_filepos;
2781 mdata->filelen += sec->reloc_count * BFD_MACH_O_RELENT_SIZE;
2782 }
7f307238
IS		 2783
2784 return TRUE;
2785}
2786
c9ffd2ea
TG		 2787static bfd_boolean
2788bfd_mach_o_build_exec_seg_command (bfd *abfd, bfd_mach_o_segment_command *seg)
50d10658 2789{
c9ffd2ea 2790 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
50d10658 2791 unsigned int i;
c9ffd2ea
TG		 2792 bfd_vma pagemask = bfd_mach_o_get_backend_data (abfd)->page_size - 1;
2793 bfd_vma vma;
2794 bfd_mach_o_section *s;
2795
2796 seg->vmsize = 0;
50d10658 2797
c9ffd2ea
TG		 2798 seg->fileoff = mdata->filelen;
2799 seg->maxprot = 0;
2800 seg->initprot = 0;
2801 seg->flags = 0;
2802
2803 /* Append sections to the segment. We assume they are properly ordered
2804 by vma (but we check that). */
2805 vma = 0;
50d10658
IS		 2806 for (i = 0; i < mdata->nsects; ++i)
2807 {
c9ffd2ea 2808 s = mdata->sections[i];
50d10658 2809
c9ffd2ea
TG		 2810 /* Consider only sections for this segment. */
2811 if (strcmp (seg->segname, s->segname) != 0)
2812 continue;
50d10658 2813
c9ffd2ea 2814 bfd_mach_o_append_section_to_segment (seg, s);
7f307238 2815
86eafac0
NC		 2816 if (s->addr < vma)
2817 {
4eca0228 2818 _bfd_error_handler
695344c0 2819 /* xgettext:c-format */
86eafac0
NC		 2820 (_("section address (%lx) below start of segment (%lx)"),
2821 (unsigned long) s->addr, (unsigned long) vma);
2822 return FALSE;
2823 }
2824
c9ffd2ea 2825 vma = s->addr + s->size;
7f307238
IS		 2826 }
2827
c9ffd2ea
TG		 2828 /* Set segment file offset: make it page aligned. */
2829 vma = seg->sect_head->addr;
2830 seg->vmaddr = vma & ~pagemask;
2831 if ((mdata->filelen & pagemask) > (vma & pagemask))
2832 mdata->filelen += pagemask + 1;
2833 seg->fileoff = mdata->filelen & ~pagemask;
2834 mdata->filelen = seg->fileoff + (vma & pagemask);
7f307238 2835
c9ffd2ea
TG		 2836 /* Set section file offset. */
2837 for (s = seg->sect_head; s != NULL; s = s->next)
7f307238 2838 {
c9ffd2ea
TG		 2839 asection *sec = s->bfdsection;
2840 flagword flags = bfd_get_section_flags (abfd, sec);
b22161d6 2841
c9ffd2ea
TG		 2842 /* Adjust segment size. */
2843 seg->vmsize = FILE_ALIGN (seg->vmsize, s->align);
2844 seg->vmsize += s->size;
2845
2846 /* File offset and length. */
2847 seg->filesize = FILE_ALIGN (seg->filesize, s->align);
2848
2849 if ((s->flags & BFD_MACH_O_SECTION_TYPE_MASK) != BFD_MACH_O_S_ZEROFILL
2850 && ((s->flags & BFD_MACH_O_SECTION_TYPE_MASK)
2851 != BFD_MACH_O_S_GB_ZEROFILL))
b22161d6 2852 {
c9ffd2ea
TG		 2853 mdata->filelen = FILE_ALIGN (mdata->filelen, s->align);
2854
2855 s->offset = mdata->filelen;
2856 s->bfdsection->filepos = s->offset;
2857
2858 seg->filesize += s->size;
2859 mdata->filelen += s->size;
b22161d6 2860 }
c9ffd2ea 2861 else
b22161d6 2862 {
c9ffd2ea
TG		 2863 s->offset = 0;
2864 s->bfdsection->filepos = 0;
2865 }
2866
2867 /* Set protection. */
2868 if (flags & SEC_LOAD)
2869 {
2870 if (flags & SEC_CODE)
2871 seg->initprot |= BFD_MACH_O_PROT_READ | BFD_MACH_O_PROT_EXECUTE;
2872 if ((flags & (SEC_DATA | SEC_READONLY)) == SEC_DATA)
2873 seg->initprot |= BFD_MACH_O_PROT_WRITE | BFD_MACH_O_PROT_READ;
b22161d6 2874 }
c9ffd2ea
TG		 2875
2876 /* Relocs shouldn't appear in non-object files. */
2877 if (s->bfdsection->reloc_count != 0)
2878 return FALSE;
b22161d6 2879 }
c9ffd2ea
TG		 2880
2881 /* Set maxprot. */
2882 if (seg->initprot != 0)
2883 seg->maxprot = BFD_MACH_O_PROT_READ | BFD_MACH_O_PROT_WRITE
2884 | BFD_MACH_O_PROT_EXECUTE;
b22161d6 2885 else
c9ffd2ea 2886 seg->maxprot = 0;
b22161d6 2887
c9ffd2ea
TG		 2888 /* Round segment size (and file size). */
2889 seg->vmsize = (seg->vmsize + pagemask) & ~pagemask;
2890 seg->filesize = (seg->filesize + pagemask) & ~pagemask;
2891 mdata->filelen = (mdata->filelen + pagemask) & ~pagemask;
7f307238 2892
c9ffd2ea
TG		 2893 return TRUE;
2894}
68ffbac6 2895
c9ffd2ea
TG		 2896/* Layout the commands: set commands size and offset, set ncmds and sizeofcmds
2897 fields in header. */
68ffbac6 2898
86eafac0 2899static bfd_boolean
c9ffd2ea
TG		 2900bfd_mach_o_layout_commands (bfd_mach_o_data_struct *mdata)
2901{
2902 unsigned wide = mach_o_wide_p (&mdata->header);
2903 unsigned int hdrlen;
2904 ufile_ptr offset;
2905 bfd_mach_o_load_command *cmd;
2906 unsigned int align;
86eafac0 2907 bfd_boolean ret = TRUE;
c9ffd2ea
TG		 2908
2909 hdrlen = wide ? BFD_MACH_O_HEADER_64_SIZE : BFD_MACH_O_HEADER_SIZE;
2910 align = wide ? 8 - 1 : 4 - 1;
2911 offset = hdrlen;
2912 mdata->header.ncmds = 0;
50d10658 2913
c9ffd2ea
TG		 2914 for (cmd = mdata->first_command; cmd; cmd = cmd->next)
2915 {
2916 mdata->header.ncmds++;
2917 cmd->offset = offset;
68ffbac6 2918
c9ffd2ea
TG		 2919 switch (cmd->type)
2920 {
2921 case BFD_MACH_O_LC_SEGMENT_64:
2922 cmd->len = BFD_MACH_O_LC_SEGMENT_64_SIZE
2923 + BFD_MACH_O_SECTION_64_SIZE * cmd->command.segment.nsects;
2924 break;
2925 case BFD_MACH_O_LC_SEGMENT:
2926 cmd->len = BFD_MACH_O_LC_SEGMENT_SIZE
2927 + BFD_MACH_O_SECTION_SIZE * cmd->command.segment.nsects;
2928 break;
2929 case BFD_MACH_O_LC_SYMTAB:
2930 cmd->len = sizeof (struct mach_o_symtab_command_external)
2931 + BFD_MACH_O_LC_SIZE;
2932 break;
2933 case BFD_MACH_O_LC_DYSYMTAB:
2934 cmd->len = sizeof (struct mach_o_dysymtab_command_external)
2935 + BFD_MACH_O_LC_SIZE;
2936 break;
2937 case BFD_MACH_O_LC_LOAD_DYLIB:
2938 cmd->len = sizeof (struct mach_o_dylib_command_external)
2939 + BFD_MACH_O_LC_SIZE;
2940 cmd->command.dylib.name_offset = cmd->len;
2941 cmd->len += strlen (cmd->command.dylib.name_str);
2942 cmd->len = (cmd->len + align) & ~align;
2943 break;
2944 case BFD_MACH_O_LC_LOAD_DYLINKER:
2945 cmd->len = sizeof (struct mach_o_str_command_external)
2946 + BFD_MACH_O_LC_SIZE;
2947 cmd->command.dylinker.name_offset = cmd->len;
2948 cmd->len += strlen (cmd->command.dylinker.name_str);
2949 cmd->len = (cmd->len + align) & ~align;
2950 break;
2951 case BFD_MACH_O_LC_MAIN:
2952 cmd->len = sizeof (struct mach_o_entry_point_command_external)
2953 + BFD_MACH_O_LC_SIZE;
2954 break;
2955 case BFD_MACH_O_LC_DYLD_INFO:
2956 cmd->len = sizeof (struct mach_o_dyld_info_command_external)
2957 + BFD_MACH_O_LC_SIZE;
2958 break;
2959 default:
4eca0228 2960 _bfd_error_handler
c9ffd2ea
TG		 2961 (_("unable to layout unknown load command 0x%lx"),
2962 (unsigned long) cmd->type);
86eafac0 2963 ret = FALSE;
c9ffd2ea 2964 break;
7f307238 2965 }
c9ffd2ea
TG		 2966
2967 BFD_ASSERT (cmd->len % (align + 1) == 0);
2968 offset += cmd->len;
7f307238 2969 }
c9ffd2ea
TG		 2970 mdata->header.sizeofcmds = offset - hdrlen;
2971 mdata->filelen = offset;
86eafac0
NC		 2972
2973 return ret;
c9ffd2ea 2974}
7f307238 2975
c9ffd2ea
TG		 2976/* Subroutine of bfd_mach_o_build_commands: set type, name and nsects of a
2977 segment. */
2978
2979static void
2980bfd_mach_o_init_segment (bfd_mach_o_data_struct *mdata,
2981 bfd_mach_o_load_command *cmd,
2982 const char *segname, unsigned int nbr_sect)
2983{
2984 bfd_mach_o_segment_command *seg = &cmd->command.segment;
2985 unsigned wide = mach_o_wide_p (&mdata->header);
2986
2987 /* Init segment command. */
2988 cmd->type = wide ? BFD_MACH_O_LC_SEGMENT_64 : BFD_MACH_O_LC_SEGMENT;
2989 cmd->type_required = FALSE;
2990
2991 strcpy (seg->segname, segname);
2992 seg->nsects = nbr_sect;
2993
2994 seg->vmaddr = 0;
2995 seg->vmsize = 0;
2996
2997 seg->fileoff = 0;
2998 seg->filesize = 0;
2999 seg->maxprot = 0;
3000 seg->initprot = 0;
3001 seg->flags = 0;
3002 seg->sect_head = NULL;
3003 seg->sect_tail = NULL;
7f307238
IS		 3004}
3005
3006/* Build Mach-O load commands (currently assuming an MH_OBJECT file).
3007 TODO: Other file formats, rebuilding symtab/dysymtab commands for strip
3008 and copy functionality. */
154a1ee5
TG		 3009
3010bfd_boolean
3011bfd_mach_o_build_commands (bfd *abfd)
3012{
046b007d 3013 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
bbd56171 3014 unsigned wide = mach_o_wide_p (&mdata->header);
c9ffd2ea
TG		 3015 unsigned int nbr_segcmd = 0;
3016 bfd_mach_o_load_command *commands;
3017 unsigned int nbr_commands;
bbd56171
IS		 3018 int symtab_idx = -1;
3019 int dysymtab_idx = -1;
c9ffd2ea
TG		 3020 int main_idx = -1;
3021 unsigned int i;
154a1ee5 3022
c9ffd2ea
TG		 3023 /* Return now if already built. */
3024 if (mdata->header.ncmds != 0)
3025 return TRUE;
154a1ee5 3026
7f307238 3027 /* Fill in the file type, if not already set. */
7f307238 3028 if (mdata->header.filetype == 0)
154a1ee5 3029 {
7f307238
IS		 3030 if (abfd->flags & EXEC_P)
3031 mdata->header.filetype = BFD_MACH_O_MH_EXECUTE;
3032 else if (abfd->flags & DYNAMIC)
3033 mdata->header.filetype = BFD_MACH_O_MH_DYLIB;
3034 else
3035 mdata->header.filetype = BFD_MACH_O_MH_OBJECT;
154a1ee5 3036 }
7f307238
IS		 3037
3038 /* If hasn't already been done, flatten sections list, and sort
3039 if/when required. Must be done before the symbol table is adjusted,
3040 since that depends on properly numbered sections. */
3041 if (mdata->nsects == 0 || mdata->sections == NULL)
3042 if (! bfd_mach_o_mangle_sections (abfd, mdata))
3043 return FALSE;
3044
3045 /* Order the symbol table, fill-in/check mach-o specific fields and
3046 partition out any indirect symbols. */
b22161d6 3047 if (!bfd_mach_o_mangle_symbols (abfd))
7f307238
IS		 3048 return FALSE;
3049
c9ffd2ea
TG		 3050 /* Segment commands. */
3051 if (mdata->header.filetype == BFD_MACH_O_MH_OBJECT)
3052 {
3053 /* Only one segment for all the sections. But the segment is
3054 optional if there is no sections. */
3055 nbr_segcmd = (mdata->nsects > 0) ? 1 : 0;
3056 }
3057 else
3058 {
3059 bfd_mach_o_section *prev_sect = NULL;
bbd56171 3060
c9ffd2ea
TG		 3061 /* One pagezero segment and one linkedit segment. */
3062 nbr_segcmd = 2;
bbd56171 3063
c9ffd2ea
TG		 3064 /* Create one segment for associated segment name in sections.
3065 Assume that sections with the same segment name are consecutive. */
3066 for (i = 0; i < mdata->nsects; i++)
3067 {
3068 bfd_mach_o_section *this_sect = mdata->sections[i];
bbd56171 3069
c9ffd2ea
TG		 3070 if (prev_sect == NULL
3071 || strcmp (prev_sect->segname, this_sect->segname) != 0)
3072 {
3073 nbr_segcmd++;
3074 prev_sect = this_sect;
3075 }
3076 }
154a1ee5 3077 }
154a1ee5 3078
c9ffd2ea
TG		 3079 nbr_commands = nbr_segcmd;
3080
3081 /* One command for the symbol table (only if there are symbols. */
7f307238 3082 if (bfd_get_symcount (abfd) > 0)
c9ffd2ea 3083 symtab_idx = nbr_commands++;
c2f09c75 3084
bbd56171
IS		 3085 /* FIXME:
3086 This is a rather crude test for whether we should build a dysymtab. */
3087 if (bfd_mach_o_should_emit_dysymtab ()
3088 && bfd_get_symcount (abfd))
3089 {
bbd56171
IS		 3090 /* If there should be a case where a dysymtab could be emitted without
3091 a symtab (seems improbable), this would need amending. */
c9ffd2ea 3092 dysymtab_idx = nbr_commands++;
bbd56171 3093 }
154a1ee5 3094
c9ffd2ea
TG		 3095 /* Add an entry point command. */
3096 if (mdata->header.filetype == BFD_MACH_O_MH_EXECUTE
3097 && bfd_get_start_address (abfd) != 0)
3098 main_idx = nbr_commands++;
c2f09c75 3099
bbd56171 3100 /* Well, we must have a header, at least. */
c9ffd2ea 3101 mdata->filelen = wide ? BFD_MACH_O_HEADER_64_SIZE : BFD_MACH_O_HEADER_SIZE;
f1bde64c 3102
bbd56171 3103 /* A bit unusual, but no content is valid;
7f307238 3104 as -n empty.s -o empty.o */
c9ffd2ea
TG		 3105 if (nbr_commands == 0)
3106 {
3107 /* Layout commands (well none...) and set headers command fields. */
86eafac0 3108 return bfd_mach_o_layout_commands (mdata);
c9ffd2ea 3109 }
f1bde64c 3110
c9ffd2ea
TG		 3111 /* Create commands for segments (and symtabs), prepend them. */
3112 commands = bfd_zalloc (abfd, nbr_commands * sizeof (bfd_mach_o_load_command));
3113 if (commands == NULL)
7f307238 3114 return FALSE;
c9ffd2ea
TG		 3115 for (i = 0; i < nbr_commands - 1; i++)
3116 commands[i].next = &commands[i + 1];
3117 commands[nbr_commands - 1].next = mdata->first_command;
3118 if (mdata->first_command == NULL)
3119 mdata->last_command = &commands[nbr_commands - 1];
3120 mdata->first_command = &commands[0];
3121
3122 if (mdata->header.filetype == BFD_MACH_O_MH_OBJECT && nbr_segcmd != 0)
3123 {
3124 /* For object file, there is only one segment. */
3125 bfd_mach_o_init_segment (mdata, &commands[0], "", mdata->nsects);
3126 }
3127 else if (nbr_segcmd != 0)
68ffbac6 3128 {
c9ffd2ea 3129 bfd_mach_o_load_command *cmd;
7f307238 3130
c9ffd2ea 3131 BFD_ASSERT (nbr_segcmd >= 2);
7f307238 3132
c9ffd2ea
TG		 3133 /* The pagezero. */
3134 cmd = &commands[0];
3135 bfd_mach_o_init_segment (mdata, cmd, "__PAGEZERO", 0);
3136
3137 /* Segments from sections. */
3138 cmd++;
3139 for (i = 0; i < mdata->nsects;)
7f307238 3140 {
c9ffd2ea
TG		 3141 const char *segname = mdata->sections[i]->segname;
3142 unsigned int nbr_sect = 1;
3143
3144 /* Count number of sections for this segment. */
3145 for (i++; i < mdata->nsects; i++)
3146 if (strcmp (mdata->sections[i]->segname, segname) == 0)
3147 nbr_sect++;
3148 else
3149 break;
3150
3151 bfd_mach_o_init_segment (mdata, cmd, segname, nbr_sect);
3152 cmd++;
7f307238 3153 }
bbd56171 3154
c9ffd2ea
TG		 3155 /* The linkedit. */
3156 bfd_mach_o_init_segment (mdata, cmd, "__LINKEDIT", 0);
7f307238 3157 }
f1bde64c 3158
bbd56171 3159 if (symtab_idx >= 0)
7f307238
IS		 3160 {
3161 /* Init symtab command. */
c9ffd2ea 3162 bfd_mach_o_load_command *cmd = &commands[symtab_idx];
68ffbac6 3163
bbd56171 3164 cmd->type = BFD_MACH_O_LC_SYMTAB;
bbd56171 3165 cmd->type_required = FALSE;
7f307238 3166 }
154a1ee5 3167
bbd56171
IS		 3168 /* If required, setup symtab command, see comment above about the quality
3169 of this test. */
3170 if (dysymtab_idx >= 0)
7f307238 3171 {
c9ffd2ea 3172 bfd_mach_o_load_command *cmd = &commands[dysymtab_idx];
bbd56171 3173
7f307238 3174 cmd->type = BFD_MACH_O_LC_DYSYMTAB;
7f307238 3175 cmd->type_required = FALSE;
c9ffd2ea
TG		 3176 }
3177
3178 /* Create the main command. */
3179 if (main_idx >= 0)
3180 {
3181 bfd_mach_o_load_command *cmd = &commands[main_idx];
7f307238 3182
c9ffd2ea
TG		 3183 cmd->type = BFD_MACH_O_LC_MAIN;
3184 cmd->type_required = TRUE;
3185
3186 cmd->command.main.entryoff = 0;
3187 cmd->command.main.stacksize = 0;
154a1ee5 3188 }
154a1ee5 3189
c9ffd2ea 3190 /* Layout commands. */
86eafac0
NC		 3191 if (! bfd_mach_o_layout_commands (mdata))
3192 return FALSE;
c9ffd2ea 3193
7f307238
IS		 3194 /* So, now we have sized the commands and the filelen set to that.
3195 Now we can build the segment command and set the section file offsets. */
c9ffd2ea
TG		 3196 if (mdata->header.filetype == BFD_MACH_O_MH_OBJECT)
3197 {
3198 for (i = 0; i < nbr_segcmd; i++)
3199 if (!bfd_mach_o_build_obj_seg_command
3200 (abfd, &commands[i].command.segment))
3201 return FALSE;
3202 }
3203 else
3204 {
3205 bfd_vma maxvma = 0;
7f307238 3206
c9ffd2ea
TG		 3207 /* Skip pagezero and linkedit segments. */
3208 for (i = 1; i < nbr_segcmd - 1; i++)
3209 {
3210 bfd_mach_o_segment_command *seg = &commands[i].command.segment;
3211
3212 if (!bfd_mach_o_build_exec_seg_command (abfd, seg))
3213 return FALSE;
3214
3215 if (seg->vmaddr + seg->vmsize > maxvma)
3216 maxvma = seg->vmaddr + seg->vmsize;
3217 }
3218
3219 /* Set the size of __PAGEZERO. */
3220 commands[0].command.segment.vmsize =
3221 commands[1].command.segment.vmaddr;
3222
3223 /* Set the vma and fileoff of __LINKEDIT. */
3224 commands[nbr_segcmd - 1].command.segment.vmaddr = maxvma;
3225 commands[nbr_segcmd - 1].command.segment.fileoff = mdata->filelen;
3226
3227 /* Set entry point (once segments have been laid out). */
3228 if (main_idx >= 0)
3229 commands[main_idx].command.main.entryoff =
3230 bfd_get_start_address (abfd) - commands[1].command.segment.vmaddr;
3231 }
7f307238 3232
154a1ee5
TG		 3233 return TRUE;
3234}
3235
3236/* Set the contents of a section. */
3237
3238bfd_boolean
3239bfd_mach_o_set_section_contents (bfd *abfd,
3240 asection *section,
3241 const void * location,
3242 file_ptr offset,
3243 bfd_size_type count)
3244{
3245 file_ptr pos;
3246
7f307238
IS		 3247 /* Trying to write the first section contents will trigger the creation of
3248 the load commands if they are not already present. */
c9ffd2ea 3249 if (!abfd->output_has_begun && !bfd_mach_o_build_commands (abfd))
154a1ee5
TG		 3250 return FALSE;
3251
3252 if (count == 0)
3253 return TRUE;
3254
3255 pos = section->filepos + offset;
3256 if (bfd_seek (abfd, pos, SEEK_SET) != 0
3257 || bfd_bwrite (location, count, abfd) != count)
3258 return FALSE;
3259
3260 return TRUE;
3261}
3262
3263int
116c20d2 3264bfd_mach_o_sizeof_headers (bfd *a ATTRIBUTE_UNUSED,
a6b96beb 3265 struct bfd_link_info *info ATTRIBUTE_UNUSED)
3af9a47b
NC		 3266{
3267 return 0;
3268}
3269
3270/* Make an empty symbol. This is required only because
3271 bfd_make_section_anyway wants to create a symbol for the section. */
3272
154a1ee5 3273asymbol *
116c20d2 3274bfd_mach_o_make_empty_symbol (bfd *abfd)
3af9a47b 3275{
d3ce72d0
NC		 3276 asymbol *new_symbol;
3277
3278 new_symbol = bfd_zalloc (abfd, sizeof (bfd_mach_o_asymbol));
3279 if (new_symbol == NULL)
3280 return new_symbol;
3281 new_symbol->the_bfd = abfd;
b22161d6 3282 new_symbol->udata.i = SYM_MACHO_FIELDS_UNSET;
d3ce72d0 3283 return new_symbol;
3af9a47b
NC		 3284}
3285
154a1ee5 3286static bfd_boolean
47daa70f 3287bfd_mach_o_read_header (bfd *abfd, file_ptr hdr_off, bfd_mach_o_header *header)
3af9a47b 3288{
46d1c23b 3289 struct mach_o_header_external raw;
1e8a024a 3290 unsigned int size;
edeb6e24 3291 bfd_vma (*get32) (const void *) = NULL;
3af9a47b 3292
1e8a024a 3293 /* Just read the magic number. */
47daa70f 3294 if (bfd_seek (abfd, hdr_off, SEEK_SET) != 0
46d1c23b 3295 || bfd_bread (raw.magic, sizeof (raw.magic), abfd) != 4)
154a1ee5 3296 return FALSE;
3af9a47b 3297
46d1c23b 3298 if (bfd_getb32 (raw.magic) == BFD_MACH_O_MH_MAGIC)
3af9a47b
NC		 3299 {
3300 header->byteorder = BFD_ENDIAN_BIG;
154a1ee5 3301 header->magic = BFD_MACH_O_MH_MAGIC;
1e8a024a 3302 header->version = 1;
3af9a47b
NC		 3303 get32 = bfd_getb32;
3304 }
46d1c23b 3305 else if (bfd_getl32 (raw.magic) == BFD_MACH_O_MH_MAGIC)
3af9a47b 3306 {
a95a4550 3307 header->byteorder = BFD_ENDIAN_LITTLE;
154a1ee5 3308 header->magic = BFD_MACH_O_MH_MAGIC;
1e8a024a
TG		 3309 header->version = 1;
3310 get32 = bfd_getl32;
3311 }
46d1c23b 3312 else if (bfd_getb32 (raw.magic) == BFD_MACH_O_MH_MAGIC_64)
1e8a024a
TG		 3313 {
3314 header->byteorder = BFD_ENDIAN_BIG;
154a1ee5 3315 header->magic = BFD_MACH_O_MH_MAGIC_64;
1e8a024a
TG		 3316 header->version = 2;
3317 get32 = bfd_getb32;
3318 }
46d1c23b 3319 else if (bfd_getl32 (raw.magic) == BFD_MACH_O_MH_MAGIC_64)
1e8a024a
TG		 3320 {
3321 header->byteorder = BFD_ENDIAN_LITTLE;
154a1ee5 3322 header->magic = BFD_MACH_O_MH_MAGIC_64;
1e8a024a 3323 header->version = 2;
3af9a47b
NC		 3324 get32 = bfd_getl32;
3325 }
3326 else
3327 {
3328 header->byteorder = BFD_ENDIAN_UNKNOWN;
154a1ee5 3329 return FALSE;
3af9a47b 3330 }
a95a4550 3331
1e8a024a 3332 /* Once the size of the header is known, read the full header. */
c2f09c75 3333 size = mach_o_wide_p (header) ?
154a1ee5 3334 BFD_MACH_O_HEADER_64_SIZE : BFD_MACH_O_HEADER_SIZE;
1e8a024a 3335
47daa70f 3336 if (bfd_seek (abfd, hdr_off, SEEK_SET) != 0
46d1c23b 3337 || bfd_bread (&raw, size, abfd) != size)
154a1ee5 3338 return FALSE;
1e8a024a 3339
46d1c23b
TG		 3340 header->cputype = (*get32) (raw.cputype);
3341 header->cpusubtype = (*get32) (raw.cpusubtype);
3342 header->filetype = (*get32) (raw.filetype);
3343 header->ncmds = (*get32) (raw.ncmds);
3344 header->sizeofcmds = (*get32) (raw.sizeofcmds);
3345 header->flags = (*get32) (raw.flags);
3af9a47b 3346
c2f09c75 3347 if (mach_o_wide_p (header))
46d1c23b 3348 header->reserved = (*get32) (raw.reserved);
facf03f2
TG		 3349 else
3350 header->reserved = 0;
1e8a024a 3351
154a1ee5 3352 return TRUE;
3af9a47b
NC		 3353}
3354
f1bde64c
TG		 3355bfd_boolean
3356bfd_mach_o_new_section_hook (bfd *abfd, asection *sec)
3357{
3358 bfd_mach_o_section *s;
a4551119 3359 unsigned bfdalign = bfd_get_section_alignment (abfd, sec);
f1bde64c
TG		 3360
3361 s = bfd_mach_o_get_mach_o_section (sec);
3362 if (s == NULL)
3363 {
3364 flagword bfd_flags;
a4551119 3365 static const mach_o_section_name_xlat * xlat;
f1bde64c
TG		 3366
3367 s = (bfd_mach_o_section *) bfd_zalloc (abfd, sizeof (*s));
3368 if (s == NULL)
3369 return FALSE;
3370 sec->used_by_bfd = s;
3371 s->bfdsection = sec;
3372
a4551119
TG		 3373 /* Create the Darwin seg/sect name pair from the bfd name.
3374 If this is a canonical name for which a specific paiting exists
3375 there will also be defined flags, type, attribute and alignment
3376 values. */
3377 xlat = bfd_mach_o_convert_section_name_to_mach_o (abfd, sec, s);
3378 if (xlat != NULL)
3379 {
3380 s->flags = xlat->macho_sectype | xlat->macho_secattr;
68ffbac6 3381 s->align = xlat->sectalign > bfdalign ? xlat->sectalign
a4551119 3382 : bfdalign;
a253d456 3383 (void) bfd_set_section_alignment (abfd, sec, s->align);
a4551119
TG		 3384 bfd_flags = bfd_get_section_flags (abfd, sec);
3385 if (bfd_flags == SEC_NO_FLAGS)
3386 bfd_set_section_flags (abfd, sec, xlat->bfd_flags);
3387 }
f1bde64c 3388 else
a4551119
TG		 3389 /* Create default flags. */
3390 bfd_mach_o_set_section_flags_from_bfd (abfd, sec);
f1bde64c
TG		 3391 }
3392
3393 return _bfd_generic_new_section_hook (abfd, sec);
3394}
3395
3396static void
3397bfd_mach_o_init_section_from_mach_o (bfd *abfd, asection *sec,
3398 unsigned long prot)
3af9a47b 3399{
117ed4f8 3400 flagword flags;
f1bde64c 3401 bfd_mach_o_section *section;
3af9a47b 3402
f1bde64c
TG		 3403 flags = bfd_get_section_flags (abfd, sec);
3404 section = bfd_mach_o_get_mach_o_section (sec);
3af9a47b 3405
a4551119
TG		 3406 /* TODO: see if we should use the xlat system for doing this by
3407 preference and fall back to this for unknown sections. */
3408
8462aec7 3409 if (flags == SEC_NO_FLAGS)
ef17cb22 3410 {
8462aec7
TG		 3411 /* Try to guess flags. */
3412 if (section->flags & BFD_MACH_O_S_ATTR_DEBUG)
3413 flags = SEC_DEBUGGING;
3414 else
3415 {
3416 flags = SEC_ALLOC;
3417 if ((section->flags & BFD_MACH_O_SECTION_TYPE_MASK)
3418 != BFD_MACH_O_S_ZEROFILL)
3419 {
3420 flags |= SEC_LOAD;
3421 if (prot & BFD_MACH_O_PROT_EXECUTE)
3422 flags |= SEC_CODE;
3423 if (prot & BFD_MACH_O_PROT_WRITE)
3424 flags |= SEC_DATA;
3425 else if (prot & BFD_MACH_O_PROT_READ)
3426 flags |= SEC_READONLY;
3427 }
3428 }
ef17cb22 3429 }
15e1c58a
TG		 3430 else
3431 {
8462aec7
TG		 3432 if ((flags & SEC_DEBUGGING) == 0)
3433 flags |= SEC_ALLOC;
15e1c58a 3434 }
8462aec7
TG		 3435
3436 if (section->offset != 0)
3437 flags |= SEC_HAS_CONTENTS;
92bc0e80
TG		 3438 if (section->nreloc != 0)
3439 flags |= SEC_RELOC;
3440
f1bde64c
TG		 3441 bfd_set_section_flags (abfd, sec, flags);
3442
3443 sec->vma = section->addr;
3444 sec->lma = section->addr;
3445 sec->size = section->size;
3446 sec->filepos = section->offset;
3447 sec->alignment_power = section->align;
3448 sec->segment_mark = 0;
3449 sec->reloc_count = section->nreloc;
3450 sec->rel_filepos = section->reloff;
3451}
3452
3453static asection *
3454bfd_mach_o_make_bfd_section (bfd *abfd,
3455 const unsigned char *segname,
3456 const unsigned char *sectname)
3457{
3458 const char *sname;
3459 flagword flags;
a95a4550 3460
f1bde64c
TG		 3461 bfd_mach_o_convert_section_name_to_bfd
3462 (abfd, (const char *)segname, (const char *)sectname, &sname, &flags);
3463 if (sname == NULL)
3464 return NULL;
3af9a47b 3465
f1bde64c 3466 return bfd_make_section_anyway_with_flags (abfd, sname, flags);
3af9a47b
NC		 3467}
3468
f1bde64c 3469static asection *
47daa70f 3470bfd_mach_o_read_section_32 (bfd *abfd, unsigned long prot)
3af9a47b 3471{
46d1c23b 3472 struct mach_o_section_32_external raw;
f1bde64c
TG		 3473 asection *sec;
3474 bfd_mach_o_section *section;
3af9a47b 3475
47daa70f
TG		 3476 if (bfd_bread (&raw, BFD_MACH_O_SECTION_SIZE, abfd)
3477 != BFD_MACH_O_SECTION_SIZE)
f1bde64c 3478 return NULL;
a95a4550 3479
5a5cbf72 3480 sec = bfd_mach_o_make_bfd_section (abfd, raw.segname, raw.sectname);
f1bde64c
TG		 3481 if (sec == NULL)
3482 return NULL;
3483
3484 section = bfd_mach_o_get_mach_o_section (sec);
3485 memcpy (section->segname, raw.segname, sizeof (raw.segname));
3486 section->segname[BFD_MACH_O_SEGNAME_SIZE] = 0;
3487 memcpy (section->sectname, raw.sectname, sizeof (raw.sectname));
69499dca 3488 section->sectname[BFD_MACH_O_SECTNAME_SIZE] = 0;
46d1c23b
TG		 3489 section->addr = bfd_h_get_32 (abfd, raw.addr);
3490 section->size = bfd_h_get_32 (abfd, raw.size);
3491 section->offset = bfd_h_get_32 (abfd, raw.offset);
3492 section->align = bfd_h_get_32 (abfd, raw.align);
c86934ce
NC		 3493 /* PR 17512: file: 0017eb76. */
3494 if (section->align > 64)
3495 {
4eca0228
AM		 3496 _bfd_error_handler
3497 (_("bfd_mach_o_read_section_32: overlarge alignment value: 0x%x, "
3498 "using 32 instead"), section->align);
c86934ce
NC		 3499 section->align = 32;
3500 }
46d1c23b
TG		 3501 section->reloff = bfd_h_get_32 (abfd, raw.reloff);
3502 section->nreloc = bfd_h_get_32 (abfd, raw.nreloc);
3503 section->flags = bfd_h_get_32 (abfd, raw.flags);
3504 section->reserved1 = bfd_h_get_32 (abfd, raw.reserved1);
3505 section->reserved2 = bfd_h_get_32 (abfd, raw.reserved2);
1e8a024a 3506 section->reserved3 = 0;
1e8a024a 3507
f1bde64c 3508 bfd_mach_o_init_section_from_mach_o (abfd, sec, prot);
1e8a024a 3509
f1bde64c 3510 return sec;
1e8a024a
TG		 3511}
3512
f1bde64c 3513static asection *
47daa70f 3514bfd_mach_o_read_section_64 (bfd *abfd, unsigned long prot)
1e8a024a 3515{
46d1c23b 3516 struct mach_o_section_64_external raw;
f1bde64c
TG		 3517 asection *sec;
3518 bfd_mach_o_section *section;
1e8a024a 3519
47daa70f
TG		 3520 if (bfd_bread (&raw, BFD_MACH_O_SECTION_64_SIZE, abfd)
3521 != BFD_MACH_O_SECTION_64_SIZE)
f1bde64c
TG		 3522 return NULL;
3523
5a5cbf72 3524 sec = bfd_mach_o_make_bfd_section (abfd, raw.segname, raw.sectname);
f1bde64c
TG		 3525 if (sec == NULL)
3526 return NULL;
1e8a024a 3527
f1bde64c
TG		 3528 section = bfd_mach_o_get_mach_o_section (sec);
3529 memcpy (section->segname, raw.segname, sizeof (raw.segname));
3530 section->segname[BFD_MACH_O_SEGNAME_SIZE] = 0;
3531 memcpy (section->sectname, raw.sectname, sizeof (raw.sectname));
69499dca 3532 section->sectname[BFD_MACH_O_SECTNAME_SIZE] = 0;
46d1c23b
TG		 3533 section->addr = bfd_h_get_64 (abfd, raw.addr);
3534 section->size = bfd_h_get_64 (abfd, raw.size);
3535 section->offset = bfd_h_get_32 (abfd, raw.offset);
3536 section->align = bfd_h_get_32 (abfd, raw.align);
c86934ce
NC		 3537 if (section->align > 64)
3538 {
4eca0228
AM		 3539 _bfd_error_handler
3540 (_("bfd_mach_o_read_section_64: overlarge alignment value: 0x%x, "
3541 "using 32 instead"), section->align);
c86934ce
NC		 3542 section->align = 32;
3543 }
46d1c23b
TG		 3544 section->reloff = bfd_h_get_32 (abfd, raw.reloff);
3545 section->nreloc = bfd_h_get_32 (abfd, raw.nreloc);
3546 section->flags = bfd_h_get_32 (abfd, raw.flags);
3547 section->reserved1 = bfd_h_get_32 (abfd, raw.reserved1);
3548 section->reserved2 = bfd_h_get_32 (abfd, raw.reserved2);
3549 section->reserved3 = bfd_h_get_32 (abfd, raw.reserved3);
3af9a47b 3550
f1bde64c 3551 bfd_mach_o_init_section_from_mach_o (abfd, sec, prot);
3af9a47b 3552
f1bde64c 3553 return sec;
3af9a47b
NC		 3554}
3555
f1bde64c 3556static asection *
47daa70f 3557bfd_mach_o_read_section (bfd *abfd, unsigned long prot, unsigned int wide)
1e8a024a
TG		 3558{
3559 if (wide)
47daa70f 3560 return bfd_mach_o_read_section_64 (abfd, prot);
1e8a024a 3561 else
47daa70f 3562 return bfd_mach_o_read_section_32 (abfd, prot);
1e8a024a
TG		 3563}
3564
afbb9e17 3565static bfd_boolean
ab273af8
TG		 3566bfd_mach_o_read_symtab_symbol (bfd *abfd,
3567 bfd_mach_o_symtab_command *sym,
3568 bfd_mach_o_asymbol *s,
3569 unsigned long i)
3af9a47b 3570{
046b007d 3571 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
c2f09c75 3572 unsigned int wide = mach_o_wide_p (&mdata->header);
046b007d
TG		 3573 unsigned int symwidth =
3574 wide ? BFD_MACH_O_NLIST_64_SIZE : BFD_MACH_O_NLIST_SIZE;
92bc0e80 3575 unsigned int symoff = sym->symoff + (i * symwidth);
46d1c23b 3576 struct mach_o_nlist_64_external raw;
3af9a47b
NC		 3577 unsigned char type = -1;
3578 unsigned char section = -1;
3579 short desc = -1;
1e8a024a 3580 symvalue value = -1;
3af9a47b
NC		 3581 unsigned long stroff = -1;
3582 unsigned int symtype = -1;
3583
3584 BFD_ASSERT (sym->strtab != NULL);
3585
c2f09c75 3586 if (bfd_seek (abfd, symoff, SEEK_SET) != 0
46d1c23b 3587 || bfd_bread (&raw, symwidth, abfd) != symwidth)
3af9a47b 3588 {
4eca0228 3589 _bfd_error_handler
695344c0 3590 /* xgettext:c-format */
46d1c23b
TG		 3591 (_("bfd_mach_o_read_symtab_symbol: unable to read %d bytes at %lu"),
3592 symwidth, (unsigned long) symoff);
afbb9e17 3593 return FALSE;
3af9a47b
NC		 3594 }
3595
46d1c23b
TG		 3596 stroff = bfd_h_get_32 (abfd, raw.n_strx);
3597 type = bfd_h_get_8 (abfd, raw.n_type);
c2f09c75 3598 symtype = type & BFD_MACH_O_N_TYPE;
46d1c23b
TG		 3599 section = bfd_h_get_8 (abfd, raw.n_sect);
3600 desc = bfd_h_get_16 (abfd, raw.n_desc);
1e8a024a 3601 if (wide)
46d1c23b 3602 value = bfd_h_get_64 (abfd, raw.n_value);
1e8a024a 3603 else
46d1c23b 3604 value = bfd_h_get_32 (abfd, raw.n_value);
3af9a47b
NC		 3605
3606 if (stroff >= sym->strsize)
3607 {
4eca0228 3608 _bfd_error_handler
695344c0 3609 /* xgettext:c-format */
46d1c23b
TG		 3610 (_("bfd_mach_o_read_symtab_symbol: name out of range (%lu >= %lu)"),
3611 (unsigned long) stroff,
3612 (unsigned long) sym->strsize);
afbb9e17 3613 return FALSE;
3af9a47b
NC		 3614 }
3615
92bc0e80
TG		 3616 s->symbol.the_bfd = abfd;
3617 s->symbol.name = sym->strtab + stroff;
3618 s->symbol.value = value;
3619 s->symbol.flags = 0x0;
b22161d6 3620 s->symbol.udata.i = i;
92bc0e80
TG		 3621 s->n_type = type;
3622 s->n_sect = section;
3623 s->n_desc = desc;
3af9a47b
NC		 3624
3625 if (type & BFD_MACH_O_N_STAB)
3626 {
92bc0e80
TG		 3627 s->symbol.flags |= BSF_DEBUGGING;
3628 s->symbol.section = bfd_und_section_ptr;
15e1c58a
TG		 3629 switch (type)
3630 {
3631 case N_FUN:
3632 case N_STSYM:
3633 case N_LCSYM:
3634 case N_BNSYM:
3635 case N_SLINE:
3636 case N_ENSYM:
3637 case N_ECOMM:
3638 case N_ECOML:
3639 case N_GSYM:
3640 if ((section > 0) && (section <= mdata->nsects))
3641 {
92bc0e80
TG		 3642 s->symbol.section = mdata->sections[section - 1]->bfdsection;
3643 s->symbol.value =
3644 s->symbol.value - mdata->sections[section - 1]->addr;
15e1c58a
TG		 3645 }
3646 break;
3647 }
3af9a47b
NC		 3648 }
3649 else
3650 {
b22161d6 3651 if (type & (BFD_MACH_O_N_PEXT | BFD_MACH_O_N_EXT))
92bc0e80 3652 s->symbol.flags |= BSF_GLOBAL;
b22161d6 3653 else
92bc0e80 3654 s->symbol.flags |= BSF_LOCAL;
3af9a47b
NC		 3655
3656 switch (symtype)
3657 {
3658 case BFD_MACH_O_N_UNDF:
c2f09c75 3659 if (type == (BFD_MACH_O_N_UNDF | BFD_MACH_O_N_EXT)
92bc0e80 3660 && s->symbol.value != 0)
c2f09c75
TG		 3661 {
3662 /* A common symbol. */
92bc0e80
TG		 3663 s->symbol.section = bfd_com_section_ptr;
3664 s->symbol.flags = BSF_NO_FLAGS;
c2f09c75
TG		 3665 }
3666 else
92bc0e80
TG		 3667 {
3668 s->symbol.section = bfd_und_section_ptr;
3669 if (s->n_desc & BFD_MACH_O_N_WEAK_REF)
3670 s->symbol.flags |= BSF_WEAK;
3671 }
3af9a47b
NC		 3672 break;
3673 case BFD_MACH_O_N_PBUD:
92bc0e80 3674 s->symbol.section = bfd_und_section_ptr;
3af9a47b
NC		 3675 break;
3676 case BFD_MACH_O_N_ABS:
92bc0e80 3677 s->symbol.section = bfd_abs_section_ptr;
3af9a47b
NC		 3678 break;
3679 case BFD_MACH_O_N_SECT:
3680 if ((section > 0) && (section <= mdata->nsects))
3681 {
92bc0e80
TG		 3682 s->symbol.section = mdata->sections[section - 1]->bfdsection;
3683 s->symbol.value =
3684 s->symbol.value - mdata->sections[section - 1]->addr;
3af9a47b
NC		 3685 }
3686 else
3687 {
3688 /* Mach-O uses 0 to mean "no section"; not an error. */
3689 if (section != 0)
3690 {
4eca0228 3691 _bfd_error_handler
695344c0 3692 /* xgettext:c-format */
4eca0228
AM		 3693 (_("bfd_mach_o_read_symtab_symbol: "
3694 "symbol \"%s\" specified invalid section %d (max %lu): "
3695 "setting to undefined"),
3696 s->symbol.name, section, mdata->nsects);
3af9a47b 3697 }
92bc0e80 3698 s->symbol.section = bfd_und_section_ptr;
3af9a47b
NC		 3699 }
3700 break;
3701 case BFD_MACH_O_N_INDR:
0596a831
TG		 3702 /* FIXME: we don't follow the BFD convention as this indirect symbol
3703 won't be followed by the referenced one. This looks harmless
3704 unless we start using the linker. */
3705 s->symbol.flags |= BSF_INDIRECT;
3706 s->symbol.section = bfd_ind_section_ptr;
3707 s->symbol.value = 0;
3af9a47b
NC		 3708 break;
3709 default:
4eca0228 3710 _bfd_error_handler
695344c0 3711 /* xgettext:c-format */
4eca0228
AM		 3712 (_("bfd_mach_o_read_symtab_symbol: "
3713 "symbol \"%s\" specified invalid type field 0x%x: "
3714 "setting to undefined"), s->symbol.name, symtype);
92bc0e80 3715 s->symbol.section = bfd_und_section_ptr;
3af9a47b
NC		 3716 break;
3717 }
3718 }
3719
afbb9e17 3720 return TRUE;
3af9a47b
NC		 3721}
3722
c5012cd8 3723bfd_boolean
ab273af8 3724bfd_mach_o_read_symtab_strtab (bfd *abfd)
3af9a47b 3725{
046b007d
TG		 3726 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
3727 bfd_mach_o_symtab_command *sym = mdata->symtab;
3728
3729 /* Fail if there is no symtab. */
3730 if (sym == NULL)
afbb9e17 3731 return FALSE;
046b007d
TG		 3732
3733 /* Success if already loaded. */
3734 if (sym->strtab)
afbb9e17 3735 return TRUE;
3af9a47b
NC		 3736
3737 if (abfd->flags & BFD_IN_MEMORY)
3738 {
3739 struct bfd_in_memory *b;
3740
3741 b = (struct bfd_in_memory *) abfd->iostream;
3742
3743 if ((sym->stroff + sym->strsize) > b->size)
3744 {
3745 bfd_set_error (bfd_error_file_truncated);
afbb9e17 3746 return FALSE;
3af9a47b 3747 }
f075ee0c 3748 sym->strtab = (char *) b->buffer + sym->stroff;
3af9a47b 3749 }
046b007d 3750 else
3af9a47b 3751 {
e7287c7f 3752 sym->strtab = bfd_alloc (abfd, sym->strsize + 1);
046b007d 3753 if (sym->strtab == NULL)
afbb9e17 3754 return FALSE;
046b007d
TG		 3755
3756 if (bfd_seek (abfd, sym->stroff, SEEK_SET) != 0
afbb9e17 3757 || bfd_bread (sym->strtab, sym->strsize, abfd) != sym->strsize)
046b007d 3758 {
a1165289
NC		 3759 /* PR 17512: file: 10888-1609-0.004. */
3760 bfd_release (abfd, sym->strtab);
3761 sym->strtab = NULL;
046b007d 3762 bfd_set_error (bfd_error_file_truncated);
afbb9e17 3763 return FALSE;
046b007d 3764 }
e7287c7f
NC		 3765 /* Zero terminate the string table. */
3766 sym->strtab[sym->strsize] = 0;
3af9a47b
NC		 3767 }
3768
afbb9e17 3769 return TRUE;
3af9a47b
NC		 3770}
3771
c5012cd8 3772bfd_boolean
ab273af8 3773bfd_mach_o_read_symtab_symbols (bfd *abfd)
3af9a47b 3774{
046b007d
TG		 3775 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
3776 bfd_mach_o_symtab_command *sym = mdata->symtab;
3af9a47b 3777 unsigned long i;
3af9a47b 3778
092d27ff 3779 if (sym == NULL || sym->symbols)
0a9d414a
NC		 3780 /* Return now if there are no symbols or if already loaded. */
3781 return TRUE;
046b007d 3782
64d29018 3783 sym->symbols = bfd_alloc2 (abfd, sym->nsyms, sizeof (bfd_mach_o_asymbol));
3af9a47b
NC		 3784 if (sym->symbols == NULL)
3785 {
4eca0228
AM		 3786 _bfd_error_handler (_("bfd_mach_o_read_symtab_symbols: "
3787 "unable to allocate memory for symbols"));
64d29018 3788 sym->nsyms = 0;
afbb9e17 3789 return FALSE;
3af9a47b 3790 }
a95a4550 3791
afbb9e17 3792 if (!bfd_mach_o_read_symtab_strtab (abfd))
64d29018 3793 goto fail;
3af9a47b
NC		 3794
3795 for (i = 0; i < sym->nsyms; i++)
64d29018
NC		 3796 if (!bfd_mach_o_read_symtab_symbol (abfd, sym, &sym->symbols[i], i))
3797 goto fail;
a95a4550 3798
afbb9e17 3799 return TRUE;
64d29018
NC		 3800
3801 fail:
3802 bfd_release (abfd, sym->symbols);
3803 sym->symbols = NULL;
3804 sym->nsyms = 0;
3805 return FALSE;
3af9a47b
NC		 3806}
3807
3808static const char *
116c20d2 3809bfd_mach_o_i386_flavour_string (unsigned int flavour)
3af9a47b
NC		 3810{
3811 switch ((int) flavour)
3812 {
15e1c58a
TG		 3813 case BFD_MACH_O_x86_THREAD_STATE32: return "x86_THREAD_STATE32";
3814 case BFD_MACH_O_x86_FLOAT_STATE32: return "x86_FLOAT_STATE32";
3815 case BFD_MACH_O_x86_EXCEPTION_STATE32: return "x86_EXCEPTION_STATE32";
3816 case BFD_MACH_O_x86_THREAD_STATE64: return "x86_THREAD_STATE64";
3817 case BFD_MACH_O_x86_FLOAT_STATE64: return "x86_FLOAT_STATE64";
3818 case BFD_MACH_O_x86_EXCEPTION_STATE64: return "x86_EXCEPTION_STATE64";
3819 case BFD_MACH_O_x86_THREAD_STATE: return "x86_THREAD_STATE";
3820 case BFD_MACH_O_x86_FLOAT_STATE: return "x86_FLOAT_STATE";
3821 case BFD_MACH_O_x86_EXCEPTION_STATE: return "x86_EXCEPTION_STATE";
3822 case BFD_MACH_O_x86_DEBUG_STATE32: return "x86_DEBUG_STATE32";
3823 case BFD_MACH_O_x86_DEBUG_STATE64: return "x86_DEBUG_STATE64";
3824 case BFD_MACH_O_x86_DEBUG_STATE: return "x86_DEBUG_STATE";
b32e07d7 3825 case BFD_MACH_O_x86_THREAD_STATE_NONE: return "x86_THREAD_STATE_NONE";
3af9a47b
NC		 3826 default: return "UNKNOWN";
3827 }
3828}
3829
3830static const char *
116c20d2 3831bfd_mach_o_ppc_flavour_string (unsigned int flavour)
3af9a47b
NC		 3832{
3833 switch ((int) flavour)
3834 {
b32e07d7
TG		 3835 case BFD_MACH_O_PPC_THREAD_STATE: return "PPC_THREAD_STATE";
3836 case BFD_MACH_O_PPC_FLOAT_STATE: return "PPC_FLOAT_STATE";
3837 case BFD_MACH_O_PPC_EXCEPTION_STATE: return "PPC_EXCEPTION_STATE";
3838 case BFD_MACH_O_PPC_VECTOR_STATE: return "PPC_VECTOR_STATE";
3839 case BFD_MACH_O_PPC_THREAD_STATE64: return "PPC_THREAD_STATE64";
3840 case BFD_MACH_O_PPC_EXCEPTION_STATE64: return "PPC_EXCEPTION_STATE64";
3af9a47b
NC		 3841 default: return "UNKNOWN";
3842 }
3843}
3844
452216ab 3845static bfd_boolean
ab273af8 3846bfd_mach_o_read_dylinker (bfd *abfd, bfd_mach_o_load_command *command)
3af9a47b
NC		 3847{
3848 bfd_mach_o_dylinker_command *cmd = &command->command.dylinker;
46d1c23b 3849 struct mach_o_str_command_external raw;
3af9a47b 3850 unsigned int nameoff;
4525c51a 3851 unsigned int namelen;
3af9a47b 3852
47daa70f 3853 if (bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
452216ab 3854 return FALSE;
3af9a47b 3855
46d1c23b 3856 nameoff = bfd_h_get_32 (abfd, raw.str);
3af9a47b 3857
4525c51a
TG		 3858 cmd->name_offset = nameoff;
3859 namelen = command->len - nameoff;
3860 nameoff += command->offset;
3861 cmd->name_str = bfd_alloc (abfd, namelen);
b32e07d7 3862 if (cmd->name_str == NULL)
452216ab 3863 return FALSE;
4525c51a
TG		 3864 if (bfd_seek (abfd, nameoff, SEEK_SET) != 0
3865 || bfd_bread (cmd->name_str, namelen, abfd) != namelen)
452216ab
TG		 3866 return FALSE;
3867 return TRUE;
3af9a47b
NC		 3868}
3869
452216ab 3870static bfd_boolean
ab273af8 3871bfd_mach_o_read_dylib (bfd *abfd, bfd_mach_o_load_command *command)
3af9a47b 3872{
47daa70f 3873 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
3af9a47b 3874 bfd_mach_o_dylib_command *cmd = &command->command.dylib;
46d1c23b 3875 struct mach_o_dylib_command_external raw;
3af9a47b 3876 unsigned int nameoff;
4525c51a 3877 unsigned int namelen;
3af9a47b 3878
046b007d
TG		 3879 switch (command->type)
3880 {
3881 case BFD_MACH_O_LC_LOAD_DYLIB:
fbe383b9 3882 case BFD_MACH_O_LC_LAZY_LOAD_DYLIB:
046b007d 3883 case BFD_MACH_O_LC_LOAD_WEAK_DYLIB:
046b007d 3884 case BFD_MACH_O_LC_ID_DYLIB:
046b007d 3885 case BFD_MACH_O_LC_REEXPORT_DYLIB:
73017762 3886 case BFD_MACH_O_LC_LOAD_UPWARD_DYLIB:
046b007d
TG		 3887 break;
3888 default:
b32e07d7 3889 BFD_FAIL ();
452216ab 3890 return FALSE;
046b007d 3891 }
3af9a47b 3892
47daa70f 3893 if (bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
452216ab 3894 return FALSE;
3af9a47b 3895
46d1c23b
TG		 3896 nameoff = bfd_h_get_32 (abfd, raw.name);
3897 cmd->timestamp = bfd_h_get_32 (abfd, raw.timestamp);
3898 cmd->current_version = bfd_h_get_32 (abfd, raw.current_version);
3899 cmd->compatibility_version = bfd_h_get_32 (abfd, raw.compatibility_version);
3af9a47b
NC		 3900
3901 cmd->name_offset = command->offset + nameoff;
4525c51a
TG		 3902 namelen = command->len - nameoff;
3903 cmd->name_str = bfd_alloc (abfd, namelen);
b32e07d7 3904 if (cmd->name_str == NULL)
452216ab 3905 return FALSE;
47daa70f 3906 if (bfd_seek (abfd, mdata->hdr_offset + cmd->name_offset, SEEK_SET) != 0
4525c51a 3907 || bfd_bread (cmd->name_str, namelen, abfd) != namelen)
452216ab
TG		 3908 return FALSE;
3909 return TRUE;
3af9a47b
NC		 3910}
3911
452216ab 3912static bfd_boolean
7a79c514
TG		 3913bfd_mach_o_read_prebound_dylib (bfd *abfd,
3914 bfd_mach_o_load_command *command)
3af9a47b 3915{
7a79c514
TG		 3916 bfd_mach_o_prebound_dylib_command *cmd = &command->command.prebound_dylib;
3917 struct mach_o_prebound_dylib_command_external raw;
3918 unsigned int nameoff;
3919 unsigned int modoff;
3920 unsigned int str_len;
3921 unsigned char *str;
3922
47daa70f 3923 if (bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
452216ab 3924 return FALSE;
7a79c514
TG		 3925
3926 nameoff = bfd_h_get_32 (abfd, raw.name);
3927 modoff = bfd_h_get_32 (abfd, raw.linked_modules);
3928 if (nameoff > command->len || modoff > command->len)
452216ab 3929 return FALSE;
7a79c514
TG		 3930
3931 str_len = command->len - sizeof (raw);
3932 str = bfd_alloc (abfd, str_len);
3933 if (str == NULL)
452216ab 3934 return FALSE;
7a79c514 3935 if (bfd_bread (str, str_len, abfd) != str_len)
452216ab 3936 return FALSE;
7a79c514
TG		 3937
3938 cmd->name_offset = command->offset + nameoff;
3939 cmd->nmodules = bfd_h_get_32 (abfd, raw.nmodules);
3940 cmd->linked_modules_offset = command->offset + modoff;
3941
3942 cmd->name_str = (char *)str + nameoff - (sizeof (raw) + BFD_MACH_O_LC_SIZE);
3943 cmd->linked_modules = str + modoff - (sizeof (raw) + BFD_MACH_O_LC_SIZE);
452216ab 3944 return TRUE;
7a79c514
TG		 3945}
3946
452216ab 3947static bfd_boolean
7a79c514
TG		 3948bfd_mach_o_read_prebind_cksum (bfd *abfd,
3949 bfd_mach_o_load_command *command)
3950{
3951 bfd_mach_o_prebind_cksum_command *cmd = &command->command.prebind_cksum;
3952 struct mach_o_prebind_cksum_command_external raw;
3af9a47b 3953
47daa70f 3954 if (bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
452216ab 3955 return FALSE;
7a79c514
TG		 3956
3957 cmd->cksum = bfd_get_32 (abfd, raw.cksum);
452216ab 3958 return TRUE;
7a79c514
TG		 3959}
3960
452216ab 3961static bfd_boolean
7a79c514
TG		 3962bfd_mach_o_read_twolevel_hints (bfd *abfd,
3963 bfd_mach_o_load_command *command)
3964{
3965 bfd_mach_o_twolevel_hints_command *cmd = &command->command.twolevel_hints;
3966 struct mach_o_twolevel_hints_command_external raw;
3967
47daa70f 3968 if (bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
452216ab 3969 return FALSE;
7a79c514
TG		 3970
3971 cmd->offset = bfd_get_32 (abfd, raw.offset);
3972 cmd->nhints = bfd_get_32 (abfd, raw.nhints);
452216ab 3973 return TRUE;
3af9a47b
NC		 3974}
3975
452216ab 3976static bfd_boolean
9f4a5bd1
TG		 3977bfd_mach_o_read_fvmlib (bfd *abfd, bfd_mach_o_load_command *command)
3978{
3979 bfd_mach_o_fvmlib_command *fvm = &command->command.fvmlib;
3980 struct mach_o_fvmlib_command_external raw;
3981 unsigned int nameoff;
4525c51a 3982 unsigned int namelen;
9f4a5bd1 3983
47daa70f 3984 if (bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
452216ab 3985 return FALSE;
9f4a5bd1
TG		 3986
3987 nameoff = bfd_h_get_32 (abfd, raw.name);
3988 fvm->minor_version = bfd_h_get_32 (abfd, raw.minor_version);
3989 fvm->header_addr = bfd_h_get_32 (abfd, raw.header_addr);
3990
3991 fvm->name_offset = command->offset + nameoff;
4525c51a
TG		 3992 namelen = command->len - nameoff;
3993 fvm->name_str = bfd_alloc (abfd, namelen);
9f4a5bd1 3994 if (fvm->name_str == NULL)
452216ab 3995 return FALSE;
9f4a5bd1 3996 if (bfd_seek (abfd, fvm->name_offset, SEEK_SET) != 0
4525c51a 3997 || bfd_bread (fvm->name_str, namelen, abfd) != namelen)
452216ab
TG		 3998 return FALSE;
3999 return TRUE;
9f4a5bd1
TG		 4000}
4001
452216ab 4002static bfd_boolean
ab273af8 4003bfd_mach_o_read_thread (bfd *abfd, bfd_mach_o_load_command *command)
3af9a47b 4004{
b32e07d7 4005 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
3af9a47b 4006 bfd_mach_o_thread_command *cmd = &command->command.thread;
92bc0e80 4007 unsigned int offset;
3af9a47b
NC		 4008 unsigned int nflavours;
4009 unsigned int i;
4010
4011 BFD_ASSERT ((command->type == BFD_MACH_O_LC_THREAD)
4012 || (command->type == BFD_MACH_O_LC_UNIXTHREAD));
4013
b32e07d7 4014 /* Count the number of threads. */
3af9a47b
NC		 4015 offset = 8;
4016 nflavours = 0;
4017 while (offset != command->len)
4018 {
46d1c23b
TG		 4019 struct mach_o_thread_command_external raw;
4020
3af9a47b 4021 if (offset >= command->len)
452216ab 4022 return FALSE;
3af9a47b 4023
c2f09c75 4024 if (bfd_seek (abfd, command->offset + offset, SEEK_SET) != 0
46d1c23b 4025 || bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
452216ab 4026 return FALSE;
3af9a47b 4027
46d1c23b 4028 offset += sizeof (raw) + bfd_h_get_32 (abfd, raw.count) * 4;
3af9a47b
NC		 4029 nflavours++;
4030 }
4031
b32e07d7 4032 /* Allocate threads. */
64d29018
NC		 4033 cmd->flavours = bfd_alloc2
4034 (abfd, nflavours, sizeof (bfd_mach_o_thread_flavour));
3af9a47b 4035 if (cmd->flavours == NULL)
452216ab 4036 return FALSE;
3af9a47b
NC		 4037 cmd->nflavours = nflavours;
4038
4039 offset = 8;
4040 nflavours = 0;
4041 while (offset != command->len)
4042 {
46d1c23b
TG		 4043 struct mach_o_thread_command_external raw;
4044
3af9a47b 4045 if (offset >= command->len)
452216ab 4046 return FALSE;
3af9a47b
NC		 4047
4048 if (nflavours >= cmd->nflavours)
452216ab 4049 return FALSE;
3af9a47b 4050
c2f09c75 4051 if (bfd_seek (abfd, command->offset + offset, SEEK_SET) != 0
46d1c23b 4052 || bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
452216ab 4053 return FALSE;
3af9a47b 4054
46d1c23b
TG		 4055 cmd->flavours[nflavours].flavour = bfd_h_get_32 (abfd, raw.flavour);
4056 cmd->flavours[nflavours].offset = command->offset + offset + sizeof (raw);
4057 cmd->flavours[nflavours].size = bfd_h_get_32 (abfd, raw.count) * 4;
4058 offset += cmd->flavours[nflavours].size + sizeof (raw);
3af9a47b
NC		 4059 nflavours++;
4060 }
4061
4062 for (i = 0; i < nflavours; i++)
4063 {
4064 asection *bfdsec;
4065 unsigned int snamelen;
4066 char *sname;
4067 const char *flavourstr;
4068 const char *prefix = "LC_THREAD";
a95a4550
AM		 4069 unsigned int j = 0;
4070
3af9a47b
NC		 4071 switch (mdata->header.cputype)
4072 {
4073 case BFD_MACH_O_CPU_TYPE_POWERPC:
1e8a024a 4074 case BFD_MACH_O_CPU_TYPE_POWERPC_64:
707e555b
TG		 4075 flavourstr =
4076 bfd_mach_o_ppc_flavour_string (cmd->flavours[i].flavour);
3af9a47b
NC		 4077 break;
4078 case BFD_MACH_O_CPU_TYPE_I386:
1e8a024a 4079 case BFD_MACH_O_CPU_TYPE_X86_64:
707e555b
TG		 4080 flavourstr =
4081 bfd_mach_o_i386_flavour_string (cmd->flavours[i].flavour);
3af9a47b
NC		 4082 break;
4083 default:
4084 flavourstr = "UNKNOWN_ARCHITECTURE";
4085 break;
4086 }
a95a4550 4087
3af9a47b 4088 snamelen = strlen (prefix) + 1 + 20 + 1 + strlen (flavourstr) + 1;
116c20d2 4089 sname = bfd_alloc (abfd, snamelen);
3af9a47b 4090 if (sname == NULL)
452216ab 4091 return FALSE;
3af9a47b
NC		 4092
4093 for (;;)
4094 {
a95a4550
AM		 4095 sprintf (sname, "%s.%s.%u", prefix, flavourstr, j);
4096 if (bfd_get_section_by_name (abfd, sname) == NULL)
3af9a47b 4097 break;
a95a4550 4098 j++;
3af9a47b
NC		 4099 }
4100
117ed4f8 4101 bfdsec = bfd_make_section_with_flags (abfd, sname, SEC_HAS_CONTENTS);
a95a4550 4102
3af9a47b
NC		 4103 bfdsec->vma = 0;
4104 bfdsec->lma = 0;
eea6121a 4105 bfdsec->size = cmd->flavours[i].size;
3af9a47b
NC		 4106 bfdsec->filepos = cmd->flavours[i].offset;
4107 bfdsec->alignment_power = 0x0;
3af9a47b
NC		 4108
4109 cmd->section = bfdsec;
4110 }
4111
452216ab 4112 return TRUE;
3af9a47b
NC		 4113}
4114
452216ab 4115static bfd_boolean
ab273af8 4116bfd_mach_o_read_dysymtab (bfd *abfd, bfd_mach_o_load_command *command)
3af9a47b 4117{
046b007d 4118 bfd_mach_o_dysymtab_command *cmd = &command->command.dysymtab;
b32e07d7 4119 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
3af9a47b
NC		 4120
4121 BFD_ASSERT (command->type == BFD_MACH_O_LC_DYSYMTAB);
4122
46d1c23b
TG		 4123 {
4124 struct mach_o_dysymtab_command_external raw;
4125
47daa70f 4126 if (bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
452216ab 4127 return FALSE;
3af9a47b 4128
46d1c23b
TG		 4129 cmd->ilocalsym = bfd_h_get_32 (abfd, raw.ilocalsym);
4130 cmd->nlocalsym = bfd_h_get_32 (abfd, raw.nlocalsym);
4131 cmd->iextdefsym = bfd_h_get_32 (abfd, raw.iextdefsym);
4132 cmd->nextdefsym = bfd_h_get_32 (abfd, raw.nextdefsym);
4133 cmd->iundefsym = bfd_h_get_32 (abfd, raw.iundefsym);
4134 cmd->nundefsym = bfd_h_get_32 (abfd, raw.nundefsym);
4135 cmd->tocoff = bfd_h_get_32 (abfd, raw.tocoff);
4136 cmd->ntoc = bfd_h_get_32 (abfd, raw.ntoc);
4137 cmd->modtaboff = bfd_h_get_32 (abfd, raw.modtaboff);
4138 cmd->nmodtab = bfd_h_get_32 (abfd, raw.nmodtab);
4139 cmd->extrefsymoff = bfd_h_get_32 (abfd, raw.extrefsymoff);
4140 cmd->nextrefsyms = bfd_h_get_32 (abfd, raw.nextrefsyms);
4141 cmd->indirectsymoff = bfd_h_get_32 (abfd, raw.indirectsymoff);
4142 cmd->nindirectsyms = bfd_h_get_32 (abfd, raw.nindirectsyms);
4143 cmd->extreloff = bfd_h_get_32 (abfd, raw.extreloff);
4144 cmd->nextrel = bfd_h_get_32 (abfd, raw.nextrel);
4145 cmd->locreloff = bfd_h_get_32 (abfd, raw.locreloff);
4146 cmd->nlocrel = bfd_h_get_32 (abfd, raw.nlocrel);
4147 }
046b007d
TG		 4148
4149 if (cmd->nmodtab != 0)
4150 {
046b007d
TG		 4151 unsigned int i;
4152 int wide = bfd_mach_o_wide_p (abfd);
4153 unsigned int module_len = wide ? 56 : 52;
4154
4155 cmd->dylib_module =
64d29018 4156 bfd_alloc2 (abfd, cmd->nmodtab, sizeof (bfd_mach_o_dylib_module));
046b007d 4157 if (cmd->dylib_module == NULL)
452216ab 4158 return FALSE;
046b007d
TG		 4159
4160 if (bfd_seek (abfd, cmd->modtaboff, SEEK_SET) != 0)
452216ab 4161 return FALSE;
046b007d
TG		 4162
4163 for (i = 0; i < cmd->nmodtab; i++)
4164 {
4165 bfd_mach_o_dylib_module *module = &cmd->dylib_module[i];
4166 unsigned long v;
46d1c23b 4167 unsigned char buf[56];
046b007d 4168
91d6fa6a 4169 if (bfd_bread ((void *) buf, module_len, abfd) != module_len)
452216ab 4170 return FALSE;
046b007d
TG		 4171
4172 module->module_name_idx = bfd_h_get_32 (abfd, buf + 0);
4173 module->iextdefsym = bfd_h_get_32 (abfd, buf + 4);
4174 module->nextdefsym = bfd_h_get_32 (abfd, buf + 8);
4175 module->irefsym = bfd_h_get_32 (abfd, buf + 12);
4176 module->nrefsym = bfd_h_get_32 (abfd, buf + 16);
4177 module->ilocalsym = bfd_h_get_32 (abfd, buf + 20);
4178 module->nlocalsym = bfd_h_get_32 (abfd, buf + 24);
4179 module->iextrel = bfd_h_get_32 (abfd, buf + 28);
4180 module->nextrel = bfd_h_get_32 (abfd, buf + 32);
4181 v = bfd_h_get_32 (abfd, buf +36);
4182 module->iinit = v & 0xffff;
4183 module->iterm = (v >> 16) & 0xffff;
4184 v = bfd_h_get_32 (abfd, buf + 40);
4185 module->ninit = v & 0xffff;
4186 module->nterm = (v >> 16) & 0xffff;
4187 if (wide)
4188 {
4189 module->objc_module_info_size = bfd_h_get_32 (abfd, buf + 44);
4190 module->objc_module_info_addr = bfd_h_get_64 (abfd, buf + 48);
4191 }
4192 else
4193 {
4194 module->objc_module_info_addr = bfd_h_get_32 (abfd, buf + 44);
4195 module->objc_module_info_size = bfd_h_get_32 (abfd, buf + 48);
4196 }
4197 }
4198 }
afbb9e17 4199
046b007d
TG		 4200 if (cmd->ntoc != 0)
4201 {
64d29018 4202 unsigned long i;
046b007d 4203
64d29018
NC		 4204 cmd->dylib_toc = bfd_alloc2
4205 (abfd, cmd->ntoc, sizeof (bfd_mach_o_dylib_table_of_content));
046b007d 4206 if (cmd->dylib_toc == NULL)
452216ab 4207 return FALSE;
046b007d
TG		 4208
4209 if (bfd_seek (abfd, cmd->tocoff, SEEK_SET) != 0)
452216ab 4210 return FALSE;
046b007d
TG		 4211
4212 for (i = 0; i < cmd->ntoc; i++)
4213 {
46d1c23b 4214 struct mach_o_dylib_table_of_contents_external raw;
046b007d
TG		 4215 bfd_mach_o_dylib_table_of_content *toc = &cmd->dylib_toc[i];
4216
46d1c23b 4217 if (bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
452216ab 4218 return FALSE;
046b007d 4219
46d1c23b
TG		 4220 toc->symbol_index = bfd_h_get_32 (abfd, raw.symbol_index);
4221 toc->module_index = bfd_h_get_32 (abfd, raw.module_index);
046b007d
TG		 4222 }
4223 }
4224
4225 if (cmd->nindirectsyms != 0)
4226 {
046b007d
TG		 4227 unsigned int i;
4228
64d29018
NC		 4229 cmd->indirect_syms = bfd_alloc2
4230 (abfd, cmd->nindirectsyms, sizeof (unsigned int));
046b007d 4231 if (cmd->indirect_syms == NULL)
452216ab 4232 return FALSE;
046b007d
TG		 4233
4234 if (bfd_seek (abfd, cmd->indirectsymoff, SEEK_SET) != 0)
452216ab 4235 return FALSE;
046b007d
TG		 4236
4237 for (i = 0; i < cmd->nindirectsyms; i++)
4238 {
46d1c23b 4239 unsigned char raw[4];
046b007d
TG		 4240 unsigned int *is = &cmd->indirect_syms[i];
4241
46d1c23b 4242 if (bfd_bread (raw, sizeof (raw), abfd) != sizeof (raw))
452216ab 4243 return FALSE;
046b007d 4244
46d1c23b 4245 *is = bfd_h_get_32 (abfd, raw);
046b007d
TG		 4246 }
4247 }
4248
4249 if (cmd->nextrefsyms != 0)
4250 {
046b007d
TG		 4251 unsigned long v;
4252 unsigned int i;
4253
64d29018
NC		 4254 cmd->ext_refs = bfd_alloc2
4255 (abfd, cmd->nextrefsyms, sizeof (bfd_mach_o_dylib_reference));
046b007d 4256 if (cmd->ext_refs == NULL)
452216ab 4257 return FALSE;
046b007d
TG		 4258
4259 if (bfd_seek (abfd, cmd->extrefsymoff, SEEK_SET) != 0)
452216ab 4260 return FALSE;
046b007d
TG		 4261
4262 for (i = 0; i < cmd->nextrefsyms; i++)
4263 {
46d1c23b 4264 unsigned char raw[4];
046b007d
TG		 4265 bfd_mach_o_dylib_reference *ref = &cmd->ext_refs[i];
4266
46d1c23b 4267 if (bfd_bread (raw, sizeof (raw), abfd) != sizeof (raw))
452216ab 4268 return FALSE;
046b007d 4269
b32e07d7
TG		 4270 /* Fields isym and flags are written as bit-fields, thus we need
4271 a specific processing for endianness. */
46d1c23b 4272 v = bfd_h_get_32 (abfd, raw);
b32e07d7
TG		 4273 if (bfd_big_endian (abfd))
4274 {
4275 ref->isym = (v >> 8) & 0xffffff;
4276 ref->flags = v & 0xff;
4277 }
4278 else
4279 {
4280 ref->isym = v & 0xffffff;
4281 ref->flags = (v >> 24) & 0xff;
4282 }
046b007d
TG		 4283 }
4284 }
3af9a47b 4285
b32e07d7 4286 if (mdata->dysymtab)
452216ab 4287 return FALSE;
b32e07d7
TG		 4288 mdata->dysymtab = cmd;
4289
452216ab 4290 return TRUE;
3af9a47b
NC		 4291}
4292
452216ab 4293static bfd_boolean
ab273af8 4294bfd_mach_o_read_symtab (bfd *abfd, bfd_mach_o_load_command *command)
3af9a47b 4295{
046b007d
TG		 4296 bfd_mach_o_symtab_command *symtab = &command->command.symtab;
4297 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
46d1c23b 4298 struct mach_o_symtab_command_external raw;
3af9a47b
NC		 4299
4300 BFD_ASSERT (command->type == BFD_MACH_O_LC_SYMTAB);
4301
47daa70f 4302 if (bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
452216ab 4303 return FALSE;
a95a4550 4304
46d1c23b
TG		 4305 symtab->symoff = bfd_h_get_32 (abfd, raw.symoff);
4306 symtab->nsyms = bfd_h_get_32 (abfd, raw.nsyms);
4307 symtab->stroff = bfd_h_get_32 (abfd, raw.stroff);
4308 symtab->strsize = bfd_h_get_32 (abfd, raw.strsize);
046b007d
TG		 4309 symtab->symbols = NULL;
4310 symtab->strtab = NULL;
3af9a47b 4311
046b007d 4312 if (symtab->nsyms != 0)
15e1c58a
TG		 4313 abfd->flags |= HAS_SYMS;
4314
046b007d 4315 if (mdata->symtab)
452216ab 4316 return FALSE;
046b007d 4317 mdata->symtab = symtab;
452216ab 4318 return TRUE;
3af9a47b
NC		 4319}
4320
452216ab 4321static bfd_boolean
ab273af8 4322bfd_mach_o_read_uuid (bfd *abfd, bfd_mach_o_load_command *command)
15e1c58a
TG		 4323{
4324 bfd_mach_o_uuid_command *cmd = &command->command.uuid;
15e1c58a
TG		 4325
4326 BFD_ASSERT (command->type == BFD_MACH_O_LC_UUID);
4327
47daa70f 4328 if (bfd_bread (cmd->uuid, 16, abfd) != 16)
452216ab 4329 return FALSE;
15e1c58a 4330
452216ab 4331 return TRUE;
15e1c58a
TG		 4332}
4333
452216ab 4334static bfd_boolean
ab273af8 4335bfd_mach_o_read_linkedit (bfd *abfd, bfd_mach_o_load_command *command)
046b007d
TG		 4336{
4337 bfd_mach_o_linkedit_command *cmd = &command->command.linkedit;
46d1c23b 4338 struct mach_o_linkedit_data_command_external raw;
046b007d 4339
47daa70f 4340 if (bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
452216ab 4341 return FALSE;
046b007d 4342
46d1c23b
TG		 4343 cmd->dataoff = bfd_get_32 (abfd, raw.dataoff);
4344 cmd->datasize = bfd_get_32 (abfd, raw.datasize);
452216ab 4345 return TRUE;
046b007d
TG		 4346}
4347
452216ab 4348static bfd_boolean
ab273af8 4349bfd_mach_o_read_str (bfd *abfd, bfd_mach_o_load_command *command)
046b007d
TG		 4350{
4351 bfd_mach_o_str_command *cmd = &command->command.str;
46d1c23b 4352 struct mach_o_str_command_external raw;
046b007d
TG		 4353 unsigned long off;
4354
47daa70f 4355 if (bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
452216ab 4356 return FALSE;
046b007d 4357
46d1c23b 4358 off = bfd_get_32 (abfd, raw.str);
046b007d
TG		 4359 cmd->stroff = command->offset + off;
4360 cmd->str_len = command->len - off;
4361 cmd->str = bfd_alloc (abfd, cmd->str_len);
4362 if (cmd->str == NULL)
452216ab 4363 return FALSE;
046b007d 4364 if (bfd_seek (abfd, cmd->stroff, SEEK_SET) != 0
91d6fa6a 4365 || bfd_bread ((void *) cmd->str, cmd->str_len, abfd) != cmd->str_len)
452216ab
TG		 4366 return FALSE;
4367 return TRUE;
046b007d
TG		 4368}
4369
c9ffd2ea
TG		 4370static unsigned char *
4371bfd_mach_o_alloc_and_read (bfd *abfd, unsigned int off, unsigned int size)
4372{
4373 unsigned char *buf;
4374
4375 buf = bfd_alloc (abfd, size);
4376 if (buf == NULL)
4377 return NULL;
4378 if (bfd_seek (abfd, off, SEEK_SET) != 0
4379 || bfd_bread (buf, size, abfd) != size)
4380 return NULL;
4381 return buf;
4382}
4383
4384static bfd_boolean
4385bfd_mach_o_read_dyld_content (bfd *abfd, bfd_mach_o_dyld_info_command *cmd)
4386{
4387 /* Read rebase content. */
4388 if (cmd->rebase_content == NULL && cmd->rebase_size != 0)
4389 {
4390 cmd->rebase_content =
4391 bfd_mach_o_alloc_and_read (abfd, cmd->rebase_off, cmd->rebase_size);
4392 if (cmd->rebase_content == NULL)
4393 return FALSE;
4394 }
4395
4396 /* Read bind content. */
4397 if (cmd->bind_content == NULL && cmd->bind_size != 0)
4398 {
4399 cmd->bind_content =
4400 bfd_mach_o_alloc_and_read (abfd, cmd->bind_off, cmd->bind_size);
4401 if (cmd->bind_content == NULL)
4402 return FALSE;
4403 }
4404
4405 /* Read weak bind content. */
4406 if (cmd->weak_bind_content == NULL && cmd->weak_bind_size != 0)
4407 {
4408 cmd->weak_bind_content = bfd_mach_o_alloc_and_read
4409 (abfd, cmd->weak_bind_off, cmd->weak_bind_size);
4410 if (cmd->weak_bind_content == NULL)
4411 return FALSE;
4412 }
4413
4414 /* Read lazy bind content. */
4415 if (cmd->lazy_bind_content == NULL && cmd->lazy_bind_size != 0)
4416 {
4417 cmd->lazy_bind_content = bfd_mach_o_alloc_and_read
4418 (abfd, cmd->lazy_bind_off, cmd->lazy_bind_size);
4419 if (cmd->lazy_bind_content == NULL)
4420 return FALSE;
4421 }
4422
4423 /* Read export content. */
4424 if (cmd->export_content == NULL && cmd->export_size != 0)
4425 {
4426 cmd->export_content = bfd_mach_o_alloc_and_read
4427 (abfd, cmd->export_off, cmd->export_size);
4428 if (cmd->export_content == NULL)
4429 return FALSE;
4430 }
4431
4432 return TRUE;
4433}
4434
452216ab 4435static bfd_boolean
ab273af8 4436bfd_mach_o_read_dyld_info (bfd *abfd, bfd_mach_o_load_command *command)
ad86f1fb
TG		 4437{
4438 bfd_mach_o_dyld_info_command *cmd = &command->command.dyld_info;
46d1c23b 4439 struct mach_o_dyld_info_command_external raw;
ad86f1fb 4440
47daa70f 4441 if (bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
452216ab 4442 return FALSE;
ad86f1fb 4443
46d1c23b
TG		 4444 cmd->rebase_off = bfd_get_32 (abfd, raw.rebase_off);
4445 cmd->rebase_size = bfd_get_32 (abfd, raw.rebase_size);
c9ffd2ea 4446 cmd->rebase_content = NULL;
46d1c23b
TG		 4447 cmd->bind_off = bfd_get_32 (abfd, raw.bind_off);
4448 cmd->bind_size = bfd_get_32 (abfd, raw.bind_size);
c9ffd2ea 4449 cmd->bind_content = NULL;
46d1c23b
TG		 4450 cmd->weak_bind_off = bfd_get_32 (abfd, raw.weak_bind_off);
4451 cmd->weak_bind_size = bfd_get_32 (abfd, raw.weak_bind_size);
c9ffd2ea 4452 cmd->weak_bind_content = NULL;
46d1c23b
TG		 4453 cmd->lazy_bind_off = bfd_get_32 (abfd, raw.lazy_bind_off);
4454 cmd->lazy_bind_size = bfd_get_32 (abfd, raw.lazy_bind_size);
c9ffd2ea 4455 cmd->lazy_bind_content = NULL;
46d1c23b
TG		 4456 cmd->export_off = bfd_get_32 (abfd, raw.export_off);
4457 cmd->export_size = bfd_get_32 (abfd, raw.export_size);
c9ffd2ea 4458 cmd->export_content = NULL;
452216ab 4459 return TRUE;
ad86f1fb
TG		 4460}
4461
edbdea0e
TG		 4462static bfd_boolean
4463bfd_mach_o_read_version_min (bfd *abfd, bfd_mach_o_load_command *command)
4464{
4465 bfd_mach_o_version_min_command *cmd = &command->command.version_min;
4466 struct mach_o_version_min_command_external raw;
4467 unsigned int ver;
4468
47daa70f 4469 if (bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
edbdea0e
TG		 4470 return FALSE;
4471
4472 ver = bfd_get_32 (abfd, raw.version);
4473 cmd->rel = ver >> 16;
4474 cmd->maj = ver >> 8;
4475 cmd->min = ver;
4476 cmd->reserved = bfd_get_32 (abfd, raw.reserved);
4477 return TRUE;
4478}
4479
fc55a902
TG		 4480static bfd_boolean
4481bfd_mach_o_read_encryption_info (bfd *abfd, bfd_mach_o_load_command *command)
4482{
4483 bfd_mach_o_encryption_info_command *cmd = &command->command.encryption_info;
4484 struct mach_o_encryption_info_command_external raw;
4485
47daa70f
TG		 4486 if (bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
4487 return FALSE;
4488
4489 cmd->cryptoff = bfd_get_32 (abfd, raw.cryptoff);
4490 cmd->cryptsize = bfd_get_32 (abfd, raw.cryptsize);
4491 cmd->cryptid = bfd_get_32 (abfd, raw.cryptid);
4492 return TRUE;
4493}
4494
4495static bfd_boolean
4496bfd_mach_o_read_encryption_info_64 (bfd *abfd, bfd_mach_o_load_command *command)
4497{
4498 bfd_mach_o_encryption_info_command *cmd = &command->command.encryption_info;
4499 struct mach_o_encryption_info_64_command_external raw;
4500
4501 if (bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
fc55a902
TG		 4502 return FALSE;
4503
4504 cmd->cryptoff = bfd_get_32 (abfd, raw.cryptoff);
4505 cmd->cryptsize = bfd_get_32 (abfd, raw.cryptsize);
4506 cmd->cryptid = bfd_get_32 (abfd, raw.cryptid);
4507 return TRUE;
4508}
4509
1778ad74
TG		 4510static bfd_boolean
4511bfd_mach_o_read_main (bfd *abfd, bfd_mach_o_load_command *command)
4512{
4513 bfd_mach_o_main_command *cmd = &command->command.main;
4514 struct mach_o_entry_point_command_external raw;
4515
47daa70f 4516 if (bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
1778ad74
TG		 4517 return FALSE;
4518
4519 cmd->entryoff = bfd_get_64 (abfd, raw.entryoff);
4520 cmd->stacksize = bfd_get_64 (abfd, raw.stacksize);
4521 return TRUE;
4522}
4523
4524static bfd_boolean
4525bfd_mach_o_read_source_version (bfd *abfd, bfd_mach_o_load_command *command)
4526{
4527 bfd_mach_o_source_version_command *cmd = &command->command.source_version;
4528 struct mach_o_source_version_command_external raw;
4529 bfd_uint64_t ver;
4530
47daa70f 4531 if (bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
1778ad74
TG		 4532 return FALSE;
4533
4534 ver = bfd_get_64 (abfd, raw.version);
4535 /* Note: we use a serie of shift to avoid shift > 32 (for which gcc
4536 generates warnings) in case of the host doesn't support 64 bit
4537 integers. */
4538 cmd->e = ver & 0x3ff;
4539 ver >>= 10;
4540 cmd->d = ver & 0x3ff;
4541 ver >>= 10;
4542 cmd->c = ver & 0x3ff;
4543 ver >>= 10;
4544 cmd->b = ver & 0x3ff;
4545 ver >>= 10;
4546 cmd->a = ver & 0xffffff;
4547 return TRUE;
4548}
4549
452216ab 4550static bfd_boolean
ab273af8
TG		 4551bfd_mach_o_read_segment (bfd *abfd,
4552 bfd_mach_o_load_command *command,
4553 unsigned int wide)
3af9a47b 4554{
3af9a47b
NC		 4555 bfd_mach_o_segment_command *seg = &command->command.segment;
4556 unsigned long i;
a95a4550 4557
1e8a024a
TG		 4558 if (wide)
4559 {
46d1c23b
TG		 4560 struct mach_o_segment_command_64_external raw;
4561
1e8a024a 4562 BFD_ASSERT (command->type == BFD_MACH_O_LC_SEGMENT_64);
3af9a47b 4563
47daa70f 4564 if (bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
452216ab 4565 return FALSE;
3af9a47b 4566
46d1c23b 4567 memcpy (seg->segname, raw.segname, 16);
15e1c58a 4568 seg->segname[16] = '\0';
1e8a024a 4569
46d1c23b
TG		 4570 seg->vmaddr = bfd_h_get_64 (abfd, raw.vmaddr);
4571 seg->vmsize = bfd_h_get_64 (abfd, raw.vmsize);
4572 seg->fileoff = bfd_h_get_64 (abfd, raw.fileoff);
4573 seg->filesize = bfd_h_get_64 (abfd, raw.filesize);
4574 seg->maxprot = bfd_h_get_32 (abfd, raw.maxprot);
4575 seg->initprot = bfd_h_get_32 (abfd, raw.initprot);
4576 seg->nsects = bfd_h_get_32 (abfd, raw.nsects);
4577 seg->flags = bfd_h_get_32 (abfd, raw.flags);
1e8a024a
TG		 4578 }
4579 else
4580 {
46d1c23b
TG		 4581 struct mach_o_segment_command_32_external raw;
4582
1e8a024a
TG		 4583 BFD_ASSERT (command->type == BFD_MACH_O_LC_SEGMENT);
4584
47daa70f 4585 if (bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
452216ab 4586 return FALSE;
1e8a024a 4587
46d1c23b 4588 memcpy (seg->segname, raw.segname, 16);
15e1c58a 4589 seg->segname[16] = '\0';
1e8a024a 4590
46d1c23b
TG		 4591 seg->vmaddr = bfd_h_get_32 (abfd, raw.vmaddr);
4592 seg->vmsize = bfd_h_get_32 (abfd, raw.vmsize);
4593 seg->fileoff = bfd_h_get_32 (abfd, raw.fileoff);
4594 seg->filesize = bfd_h_get_32 (abfd, raw.filesize);
4595 seg->maxprot = bfd_h_get_32 (abfd, raw.maxprot);
4596 seg->initprot = bfd_h_get_32 (abfd, raw.initprot);
4597 seg->nsects = bfd_h_get_32 (abfd, raw.nsects);
4598 seg->flags = bfd_h_get_32 (abfd, raw.flags);
1e8a024a 4599 }
9d4b6009
TG		 4600 seg->sect_head = NULL;
4601 seg->sect_tail = NULL;
3af9a47b 4602
f1bde64c 4603 for (i = 0; i < seg->nsects; i++)
3af9a47b 4604 {
f1bde64c 4605 asection *sec;
a95a4550 4606
47daa70f 4607 sec = bfd_mach_o_read_section (abfd, seg->initprot, wide);
f1bde64c 4608 if (sec == NULL)
452216ab 4609 return FALSE;
f1bde64c 4610
c9ffd2ea
TG		 4611 bfd_mach_o_append_section_to_segment
4612 (seg, bfd_mach_o_get_mach_o_section (sec));
3af9a47b
NC		 4613 }
4614
452216ab 4615 return TRUE;
3af9a47b
NC		 4616}
4617
452216ab 4618static bfd_boolean
ab273af8 4619bfd_mach_o_read_segment_32 (bfd *abfd, bfd_mach_o_load_command *command)
1e8a024a 4620{
ab273af8 4621 return bfd_mach_o_read_segment (abfd, command, 0);
1e8a024a
TG		 4622}
4623
452216ab 4624static bfd_boolean
ab273af8 4625bfd_mach_o_read_segment_64 (bfd *abfd, bfd_mach_o_load_command *command)
1e8a024a 4626{
ab273af8 4627 return bfd_mach_o_read_segment (abfd, command, 1);
1e8a024a
TG		 4628}
4629
452216ab 4630static bfd_boolean
ab273af8 4631bfd_mach_o_read_command (bfd *abfd, bfd_mach_o_load_command *command)
3af9a47b 4632{
47daa70f 4633 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
46d1c23b
TG		 4634 struct mach_o_load_command_external raw;
4635 unsigned int cmd;
3af9a47b 4636
046b007d 4637 /* Read command type and length. */
47daa70f 4638 if (bfd_seek (abfd, mdata->hdr_offset + command->offset, SEEK_SET) != 0
46d1c23b 4639 || bfd_bread (&raw, BFD_MACH_O_LC_SIZE, abfd) != BFD_MACH_O_LC_SIZE)
452216ab 4640 return FALSE;
3af9a47b 4641
46d1c23b
TG		 4642 cmd = bfd_h_get_32 (abfd, raw.cmd);
4643 command->type = cmd & ~BFD_MACH_O_LC_REQ_DYLD;
4644 command->type_required = cmd & BFD_MACH_O_LC_REQ_DYLD ? TRUE : FALSE;
4645 command->len = bfd_h_get_32 (abfd, raw.cmdsize);
3af9a47b
NC		 4646
4647 switch (command->type)
4648 {
4649 case BFD_MACH_O_LC_SEGMENT:
452216ab
TG		 4650 if (!bfd_mach_o_read_segment_32 (abfd, command))
4651 return FALSE;
1e8a024a
TG		 4652 break;
4653 case BFD_MACH_O_LC_SEGMENT_64:
452216ab
TG		 4654 if (!bfd_mach_o_read_segment_64 (abfd, command))
4655 return FALSE;
3af9a47b
NC		 4656 break;
4657 case BFD_MACH_O_LC_SYMTAB:
452216ab
TG		 4658 if (!bfd_mach_o_read_symtab (abfd, command))
4659 return FALSE;
3af9a47b
NC		 4660 break;
4661 case BFD_MACH_O_LC_SYMSEG:
4662 break;
4663 case BFD_MACH_O_LC_THREAD:
4664 case BFD_MACH_O_LC_UNIXTHREAD:
452216ab
TG		 4665 if (!bfd_mach_o_read_thread (abfd, command))
4666 return FALSE;
3af9a47b
NC		 4667 break;
4668 case BFD_MACH_O_LC_LOAD_DYLINKER:
4669 case BFD_MACH_O_LC_ID_DYLINKER:
10be66a4 4670 case BFD_MACH_O_LC_DYLD_ENVIRONMENT:
452216ab
TG		 4671 if (!bfd_mach_o_read_dylinker (abfd, command))
4672 return FALSE;
3af9a47b
NC		 4673 break;
4674 case BFD_MACH_O_LC_LOAD_DYLIB:
fbe383b9 4675 case BFD_MACH_O_LC_LAZY_LOAD_DYLIB:
3af9a47b
NC		 4676 case BFD_MACH_O_LC_ID_DYLIB:
4677 case BFD_MACH_O_LC_LOAD_WEAK_DYLIB:
046b007d 4678 case BFD_MACH_O_LC_REEXPORT_DYLIB:
73017762 4679 case BFD_MACH_O_LC_LOAD_UPWARD_DYLIB:
452216ab
TG		 4680 if (!bfd_mach_o_read_dylib (abfd, command))
4681 return FALSE;
3af9a47b
NC		 4682 break;
4683 case BFD_MACH_O_LC_PREBOUND_DYLIB:
452216ab
TG		 4684 if (!bfd_mach_o_read_prebound_dylib (abfd, command))
4685 return FALSE;
3af9a47b
NC		 4686 break;
4687 case BFD_MACH_O_LC_LOADFVMLIB:
4688 case BFD_MACH_O_LC_IDFVMLIB:
452216ab
TG		 4689 if (!bfd_mach_o_read_fvmlib (abfd, command))
4690 return FALSE;
9f4a5bd1 4691 break;
3af9a47b
NC		 4692 case BFD_MACH_O_LC_IDENT:
4693 case BFD_MACH_O_LC_FVMFILE:
4694 case BFD_MACH_O_LC_PREPAGE:
4695 case BFD_MACH_O_LC_ROUTINES:
9b02d212 4696 case BFD_MACH_O_LC_ROUTINES_64:
046b007d 4697 break;
3af9a47b 4698 case BFD_MACH_O_LC_SUB_FRAMEWORK:
046b007d
TG		 4699 case BFD_MACH_O_LC_SUB_UMBRELLA:
4700 case BFD_MACH_O_LC_SUB_LIBRARY:
4701 case BFD_MACH_O_LC_SUB_CLIENT:
0c9b2b4c 4702 case BFD_MACH_O_LC_RPATH:
452216ab
TG		 4703 if (!bfd_mach_o_read_str (abfd, command))
4704 return FALSE;
3af9a47b
NC		 4705 break;
4706 case BFD_MACH_O_LC_DYSYMTAB:
452216ab
TG		 4707 if (!bfd_mach_o_read_dysymtab (abfd, command))
4708 return FALSE;
3af9a47b 4709 break;
3af9a47b 4710 case BFD_MACH_O_LC_PREBIND_CKSUM:
452216ab
TG		 4711 if (!bfd_mach_o_read_prebind_cksum (abfd, command))
4712 return FALSE;
7a79c514
TG		 4713 break;
4714 case BFD_MACH_O_LC_TWOLEVEL_HINTS:
452216ab
TG		 4715 if (!bfd_mach_o_read_twolevel_hints (abfd, command))
4716 return FALSE;
3af9a47b 4717 break;
15e1c58a 4718 case BFD_MACH_O_LC_UUID:
452216ab
TG		 4719 if (!bfd_mach_o_read_uuid (abfd, command))
4720 return FALSE;
15e1c58a
TG		 4721 break;
4722 case BFD_MACH_O_LC_CODE_SIGNATURE:
846b9259 4723 case BFD_MACH_O_LC_SEGMENT_SPLIT_INFO:
edbdea0e 4724 case BFD_MACH_O_LC_FUNCTION_STARTS:
1778ad74
TG		 4725 case BFD_MACH_O_LC_DATA_IN_CODE:
4726 case BFD_MACH_O_LC_DYLIB_CODE_SIGN_DRS:
47daa70f 4727 case BFD_MACH_O_LC_LINKER_OPTIMIZATION_HINT:
452216ab
TG		 4728 if (!bfd_mach_o_read_linkedit (abfd, command))
4729 return FALSE;
15e1c58a 4730 break;
fc55a902
TG		 4731 case BFD_MACH_O_LC_ENCRYPTION_INFO:
4732 if (!bfd_mach_o_read_encryption_info (abfd, command))
452216ab 4733 return FALSE;
fc55a902 4734 break;
47daa70f
TG		 4735 case BFD_MACH_O_LC_ENCRYPTION_INFO_64:
4736 if (!bfd_mach_o_read_encryption_info_64 (abfd, command))
4737 return FALSE;
4738 break;
ad86f1fb 4739 case BFD_MACH_O_LC_DYLD_INFO:
452216ab
TG		 4740 if (!bfd_mach_o_read_dyld_info (abfd, command))
4741 return FALSE;
ad86f1fb 4742 break;
edbdea0e
TG		 4743 case BFD_MACH_O_LC_VERSION_MIN_MACOSX:
4744 case BFD_MACH_O_LC_VERSION_MIN_IPHONEOS:
47daa70f 4745 case BFD_MACH_O_LC_VERSION_MIN_WATCHOS:
edbdea0e 4746 if (!bfd_mach_o_read_version_min (abfd, command))
452216ab 4747 return FALSE;
edbdea0e 4748 break;
1778ad74
TG		 4749 case BFD_MACH_O_LC_MAIN:
4750 if (!bfd_mach_o_read_main (abfd, command))
452216ab 4751 return FALSE;
1778ad74
TG		 4752 break;
4753 case BFD_MACH_O_LC_SOURCE_VERSION:
4754 if (!bfd_mach_o_read_source_version (abfd, command))
452216ab 4755 return FALSE;
1778ad74 4756 break;
3af9a47b 4757 default:
86eafac0 4758 command->len = 0;
4eca0228
AM		 4759 _bfd_error_handler (_("%B: unknown load command 0x%lx"),
4760 abfd, (unsigned long) command->type);
86eafac0 4761 return FALSE;
3af9a47b
NC		 4762 }
4763
452216ab 4764 return TRUE;
3af9a47b
NC		 4765}
4766
4767static void
116c20d2 4768bfd_mach_o_flatten_sections (bfd *abfd)
3af9a47b 4769{
046b007d 4770 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
c9ffd2ea 4771 bfd_mach_o_load_command *cmd;
3af9a47b 4772 long csect = 0;
a95a4550 4773
15e1c58a 4774 /* Count total number of sections. */
3af9a47b
NC		 4775 mdata->nsects = 0;
4776
c9ffd2ea 4777 for (cmd = mdata->first_command; cmd != NULL; cmd = cmd->next)
3af9a47b 4778 {
c9ffd2ea
TG		 4779 if (cmd->type == BFD_MACH_O_LC_SEGMENT
4780 || cmd->type == BFD_MACH_O_LC_SEGMENT_64)
3af9a47b 4781 {
c9ffd2ea 4782 bfd_mach_o_segment_command *seg = &cmd->command.segment;
e84d6fca 4783
3af9a47b
NC		 4784 mdata->nsects += seg->nsects;
4785 }
4786 }
4787
15e1c58a 4788 /* Allocate sections array. */
64d29018
NC		 4789 mdata->sections = bfd_alloc2 (abfd,
4790 mdata->nsects, sizeof (bfd_mach_o_section *));
15e1c58a
TG		 4791
4792 /* Fill the array. */
3af9a47b
NC		 4793 csect = 0;
4794
c9ffd2ea 4795 for (cmd = mdata->first_command; cmd != NULL; cmd = cmd->next)
3af9a47b 4796 {
c9ffd2ea
TG		 4797 if (cmd->type == BFD_MACH_O_LC_SEGMENT
4798 || cmd->type == BFD_MACH_O_LC_SEGMENT_64)
3af9a47b 4799 {
c9ffd2ea 4800 bfd_mach_o_segment_command *seg = &cmd->command.segment;
f1bde64c 4801 bfd_mach_o_section *sec;
3af9a47b
NC		 4802
4803 BFD_ASSERT (csect + seg->nsects <= mdata->nsects);
4804
f1bde64c
TG		 4805 for (sec = seg->sect_head; sec != NULL; sec = sec->next)
4806 mdata->sections[csect++] = sec;
3af9a47b
NC		 4807 }
4808 }
4809}
4810
afbb9e17 4811static bfd_boolean
116c20d2 4812bfd_mach_o_scan_start_address (bfd *abfd)
3af9a47b 4813{
046b007d 4814 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
c9ffd2ea
TG		 4815 bfd_mach_o_thread_command *thr = NULL;
4816 bfd_mach_o_load_command *cmd;
3af9a47b
NC		 4817 unsigned long i;
4818
c9ffd2ea
TG		 4819 for (cmd = mdata->first_command; cmd != NULL; cmd = cmd->next)
4820 if (cmd->type == BFD_MACH_O_LC_THREAD
4821 || cmd->type == BFD_MACH_O_LC_UNIXTHREAD)
afbb9e17 4822 {
c9ffd2ea 4823 thr = &cmd->command.thread;
afbb9e17
TG		 4824 break;
4825 }
c9ffd2ea 4826 else if (cmd->type == BFD_MACH_O_LC_MAIN && mdata->nsects > 1)
c0fd7846 4827 {
c9ffd2ea 4828 bfd_mach_o_main_command *main_cmd = &cmd->command.main;
c0fd7846 4829 bfd_mach_o_section *text_sect = mdata->sections[0];
c9ffd2ea 4830
c0fd7846
TG		 4831 if (text_sect)
4832 {
4833 abfd->start_address = main_cmd->entryoff
4834 + (text_sect->addr - text_sect->offset);
4835 return TRUE;
4836 }
4837 }
3af9a47b 4838
5ee43bc4 4839 /* An object file has no start address, so do not fail if not found. */
c9ffd2ea 4840 if (thr == NULL)
5ee43bc4 4841 return TRUE;
3af9a47b 4842
afbb9e17 4843 /* FIXME: create a subtarget hook ? */
c9ffd2ea 4844 for (i = 0; i < thr->nflavours; i++)
3af9a47b 4845 {
a95a4550 4846 if ((mdata->header.cputype == BFD_MACH_O_CPU_TYPE_I386)
c9ffd2ea 4847 && (thr->flavours[i].flavour == BFD_MACH_O_x86_THREAD_STATE32))
3af9a47b
NC		 4848 {
4849 unsigned char buf[4];
4850
c9ffd2ea 4851 if (bfd_seek (abfd, thr->flavours[i].offset + 40, SEEK_SET) != 0
c2f09c75 4852 || bfd_bread (buf, 4, abfd) != 4)
afbb9e17 4853 return FALSE;
3af9a47b
NC		 4854
4855 abfd->start_address = bfd_h_get_32 (abfd, buf);
4856 }
a95a4550 4857 else if ((mdata->header.cputype == BFD_MACH_O_CPU_TYPE_POWERPC)
c9ffd2ea 4858 && (thr->flavours[i].flavour == BFD_MACH_O_PPC_THREAD_STATE))
3af9a47b
NC		 4859 {
4860 unsigned char buf[4];
4861
c9ffd2ea 4862 if (bfd_seek (abfd, thr->flavours[i].offset + 0, SEEK_SET) != 0
c2f09c75 4863 || bfd_bread (buf, 4, abfd) != 4)
afbb9e17 4864 return FALSE;
3af9a47b
NC		 4865
4866 abfd->start_address = bfd_h_get_32 (abfd, buf);
4867 }
1e8a024a 4868 else if ((mdata->header.cputype == BFD_MACH_O_CPU_TYPE_POWERPC_64)
c9ffd2ea 4869 && (thr->flavours[i].flavour == BFD_MACH_O_PPC_THREAD_STATE64))
1e8a024a
TG		 4870 {
4871 unsigned char buf[8];
4872
c9ffd2ea 4873 if (bfd_seek (abfd, thr->flavours[i].offset + 0, SEEK_SET) != 0
c2f09c75 4874 || bfd_bread (buf, 8, abfd) != 8)
afbb9e17 4875 return FALSE;
1e8a024a
TG		 4876
4877 abfd->start_address = bfd_h_get_64 (abfd, buf);
4878 }
4879 else if ((mdata->header.cputype == BFD_MACH_O_CPU_TYPE_X86_64)
c9ffd2ea 4880 && (thr->flavours[i].flavour == BFD_MACH_O_x86_THREAD_STATE64))
1e8a024a
TG		 4881 {
4882 unsigned char buf[8];
4883
c9ffd2ea 4884 if (bfd_seek (abfd, thr->flavours[i].offset + (16 * 8), SEEK_SET) != 0
c2f09c75 4885 || bfd_bread (buf, 8, abfd) != 8)
afbb9e17 4886 return FALSE;
1e8a024a
TG		 4887
4888 abfd->start_address = bfd_h_get_64 (abfd, buf);
4889 }
3af9a47b
NC		 4890 }
4891
afbb9e17 4892 return TRUE;
3af9a47b
NC		 4893}
4894
42fa0891
TG		 4895bfd_boolean
4896bfd_mach_o_set_arch_mach (bfd *abfd,
4897 enum bfd_architecture arch,
4898 unsigned long machine)
4899{
4900 bfd_mach_o_backend_data *bed = bfd_mach_o_get_backend_data (abfd);
4901
4902 /* If this isn't the right architecture for this backend, and this
4903 isn't the generic backend, fail. */
4904 if (arch != bed->arch
4905 && arch != bfd_arch_unknown
4906 && bed->arch != bfd_arch_unknown)
4907 return FALSE;
4908
4909 return bfd_default_set_arch_mach (abfd, arch, machine);
4910}
4911
afbb9e17 4912static bfd_boolean
116c20d2
NC		 4913bfd_mach_o_scan (bfd *abfd,
4914 bfd_mach_o_header *header,
4915 bfd_mach_o_data_struct *mdata)
3af9a47b
NC		 4916{
4917 unsigned int i;
3af9a47b
NC		 4918 enum bfd_architecture cputype;
4919 unsigned long cpusubtype;
1e8a024a
TG		 4920 unsigned int hdrsize;
4921
c2f09c75 4922 hdrsize = mach_o_wide_p (header) ?
154a1ee5 4923 BFD_MACH_O_HEADER_64_SIZE : BFD_MACH_O_HEADER_SIZE;
3af9a47b 4924
3af9a47b 4925 mdata->header = *header;
3af9a47b 4926
154a1ee5 4927 abfd->flags = abfd->flags & BFD_IN_MEMORY;
15e1c58a
TG		 4928 switch (header->filetype)
4929 {
4930 case BFD_MACH_O_MH_OBJECT:
4931 abfd->flags |= HAS_RELOC;
4932 break;
4933 case BFD_MACH_O_MH_EXECUTE:
4934 abfd->flags |= EXEC_P;
4935 break;
4936 case BFD_MACH_O_MH_DYLIB:
4937 case BFD_MACH_O_MH_BUNDLE:
4938 abfd->flags |= DYNAMIC;
4939 break;
4940 }
4941
3af9a47b
NC		 4942 abfd->tdata.mach_o_data = mdata;
4943
e84d6fca
AM		 4944 bfd_mach_o_convert_architecture (header->cputype, header->cpusubtype,
4945 &cputype, &cpusubtype);
3af9a47b
NC		 4946 if (cputype == bfd_arch_unknown)
4947 {
4eca0228 4948 _bfd_error_handler
695344c0 4949 /* xgettext:c-format */
afbb9e17
TG		 4950 (_("bfd_mach_o_scan: unknown architecture 0x%lx/0x%lx"),
4951 header->cputype, header->cpusubtype);
4952 return FALSE;
3af9a47b
NC		 4953 }
4954
4955 bfd_set_arch_mach (abfd, cputype, cpusubtype);
a95a4550 4956
3af9a47b
NC		 4957 if (header->ncmds != 0)
4958 {
c9ffd2ea
TG		 4959 bfd_mach_o_load_command *cmd;
4960
4961 mdata->first_command = NULL;
4962 mdata->last_command = NULL;
64d29018
NC		 4963
4964 cmd = bfd_alloc2 (abfd, header->ncmds, sizeof (bfd_mach_o_load_command));
c9ffd2ea 4965 if (cmd == NULL)
afbb9e17 4966 return FALSE;
a95a4550 4967
3af9a47b
NC		 4968 for (i = 0; i < header->ncmds; i++)
4969 {
c9ffd2ea
TG		 4970 bfd_mach_o_load_command *cur = &cmd[i];
4971
4972 bfd_mach_o_append_command (abfd, cur);
3af9a47b
NC		 4973
4974 if (i == 0)
1e8a024a 4975 cur->offset = hdrsize;
3af9a47b
NC		 4976 else
4977 {
c9ffd2ea 4978 bfd_mach_o_load_command *prev = &cmd[i - 1];
3af9a47b
NC		 4979 cur->offset = prev->offset + prev->len;
4980 }
4981
452216ab 4982 if (!bfd_mach_o_read_command (abfd, cur))
afbb9e17 4983 return FALSE;
a95a4550 4984 }
3af9a47b
NC		 4985 }
4986
c0fd7846
TG		 4987 /* Sections should be flatten before scanning start address. */
4988 bfd_mach_o_flatten_sections (abfd);
4989 if (!bfd_mach_o_scan_start_address (abfd))
afbb9e17 4990 return FALSE;
3af9a47b 4991
afbb9e17 4992 return TRUE;
3af9a47b
NC		 4993}
4994
b34976b6 4995bfd_boolean
154a1ee5 4996bfd_mach_o_mkobject_init (bfd *abfd)
3af9a47b
NC		 4997{
4998 bfd_mach_o_data_struct *mdata = NULL;
4999
b30a5d18 5000 mdata = bfd_zalloc (abfd, sizeof (bfd_mach_o_data_struct));
3af9a47b 5001 if (mdata == NULL)
b34976b6 5002 return FALSE;
3af9a47b
NC		 5003 abfd->tdata.mach_o_data = mdata;
5004
5005 mdata->header.magic = 0;
5006 mdata->header.cputype = 0;
5007 mdata->header.cpusubtype = 0;
5008 mdata->header.filetype = 0;
5009 mdata->header.ncmds = 0;
5010 mdata->header.sizeofcmds = 0;
5011 mdata->header.flags = 0;
5012 mdata->header.byteorder = BFD_ENDIAN_UNKNOWN;
c9ffd2ea
TG		 5013 mdata->first_command = NULL;
5014 mdata->last_command = NULL;
3af9a47b
NC		 5015 mdata->nsects = 0;
5016 mdata->sections = NULL;
4434114c 5017 mdata->dyn_reloc_cache = NULL;
3af9a47b 5018
b34976b6 5019 return TRUE;
3af9a47b
NC		 5020}
5021
42fa0891
TG		 5022static bfd_boolean
5023bfd_mach_o_gen_mkobject (bfd *abfd)
5024{
5025 bfd_mach_o_data_struct *mdata;
5026
5027 if (!bfd_mach_o_mkobject_init (abfd))
5028 return FALSE;
5029
5030 mdata = bfd_mach_o_get_data (abfd);
5031 mdata->header.magic = BFD_MACH_O_MH_MAGIC;
5032 mdata->header.cputype = 0;
5033 mdata->header.cpusubtype = 0;
5034 mdata->header.byteorder = abfd->xvec->byteorder;
5035 mdata->header.version = 1;
5036
5037 return TRUE;
5038}
5039
3af9a47b 5040const bfd_target *
154a1ee5 5041bfd_mach_o_header_p (bfd *abfd,
47daa70f 5042 file_ptr hdr_off,
154a1ee5
TG		 5043 bfd_mach_o_filetype filetype,
5044 bfd_mach_o_cpu_type cputype)
3af9a47b
NC		 5045{
5046 bfd_mach_o_header header;
c9ba0c87 5047 bfd_mach_o_data_struct *mdata;
3af9a47b 5048
47daa70f 5049 if (!bfd_mach_o_read_header (abfd, hdr_off, &header))
e84d6fca 5050 goto wrong;
3af9a47b 5051
e84d6fca
AM		 5052 if (! (header.byteorder == BFD_ENDIAN_BIG
5053 || header.byteorder == BFD_ENDIAN_LITTLE))
3af9a47b 5054 {
4eca0228
AM		 5055 _bfd_error_handler (_("unknown header byte-order value 0x%lx"),
5056 (unsigned long) header.byteorder);
e84d6fca 5057 goto wrong;
3af9a47b
NC		 5058 }
5059
e84d6fca
AM		 5060 if (! ((header.byteorder == BFD_ENDIAN_BIG
5061 && abfd->xvec->byteorder == BFD_ENDIAN_BIG
5062 && abfd->xvec->header_byteorder == BFD_ENDIAN_BIG)
5063 || (header.byteorder == BFD_ENDIAN_LITTLE
5064 && abfd->xvec->byteorder == BFD_ENDIAN_LITTLE
5065 && abfd->xvec->header_byteorder == BFD_ENDIAN_LITTLE)))
5066 goto wrong;
3af9a47b 5067
154a1ee5
TG		 5068 /* Check cputype and filetype.
5069 In case of wildcard, do not accept magics that are handled by existing
5070 targets. */
5071 if (cputype)
5072 {
5073 if (header.cputype != cputype)
5074 goto wrong;
5075 }
26954155
TG		 5076 else
5077 {
5078#ifndef BFD64
5079 /* Do not recognize 64 architectures if not configured for 64bit targets.
5080 This could happen only for generic targets. */
5081 if (mach_o_wide_p (&header))
5082 goto wrong;
5083#endif
5084 }
b22161d6 5085
154a1ee5
TG		 5086 if (filetype)
5087 {
5088 if (header.filetype != filetype)
5089 goto wrong;
5090 }
5091 else
5092 {
5093 switch (header.filetype)
5094 {
5095 case BFD_MACH_O_MH_CORE:
5096 /* Handled by core_p */
5097 goto wrong;
5098 default:
5099 break;
5100 }
5101 }
5102
c9ba0c87
AM		 5103 mdata = (bfd_mach_o_data_struct *) bfd_zalloc (abfd, sizeof (*mdata));
5104 if (mdata == NULL)
e84d6fca 5105 goto fail;
47daa70f 5106 mdata->hdr_offset = hdr_off;
3af9a47b 5107
c9ba0c87 5108 if (!bfd_mach_o_scan (abfd, &header, mdata))
e84d6fca 5109 goto wrong;
a95a4550 5110
3af9a47b 5111 return abfd->xvec;
e84d6fca
AM		 5112
5113 wrong:
5114 bfd_set_error (bfd_error_wrong_format);
5115
5116 fail:
e84d6fca 5117 return NULL;
3af9a47b
NC		 5118}
5119
154a1ee5
TG		 5120static const bfd_target *
5121bfd_mach_o_gen_object_p (bfd *abfd)
3af9a47b 5122{
47daa70f 5123 return bfd_mach_o_header_p (abfd, 0, 0, 0);
154a1ee5 5124}
e84d6fca 5125
154a1ee5
TG		 5126static const bfd_target *
5127bfd_mach_o_gen_core_p (bfd *abfd)
5128{
47daa70f 5129 return bfd_mach_o_header_p (abfd, 0, BFD_MACH_O_MH_CORE, 0);
3af9a47b
NC		 5130}
5131
3cc27770
TG		 5132/* Return the base address of ABFD, ie the address at which the image is
5133 mapped. The possible initial pagezero is ignored. */
5134
5135bfd_vma
5136bfd_mach_o_get_base_address (bfd *abfd)
5137{
5138 bfd_mach_o_data_struct *mdata;
c9ffd2ea 5139 bfd_mach_o_load_command *cmd;
3cc27770
TG		 5140
5141 /* Check for Mach-O. */
5142 if (!bfd_mach_o_valid (abfd))
5143 return 0;
5144 mdata = bfd_mach_o_get_data (abfd);
5145
c9ffd2ea 5146 for (cmd = mdata->first_command; cmd != NULL; cmd = cmd->next)
3cc27770 5147 {
3cc27770
TG		 5148 if ((cmd->type == BFD_MACH_O_LC_SEGMENT
5149 || cmd->type == BFD_MACH_O_LC_SEGMENT_64))
5150 {
5151 struct bfd_mach_o_segment_command *segcmd = &cmd->command.segment;
5152
5153 if (segcmd->initprot != 0)
5154 return segcmd->vmaddr;
5155 }
5156 }
5157 return 0;
5158}
5159
3af9a47b
NC		 5160typedef struct mach_o_fat_archentry
5161{
5162 unsigned long cputype;
5163 unsigned long cpusubtype;
5164 unsigned long offset;
5165 unsigned long size;
5166 unsigned long align;
3af9a47b
NC		 5167} mach_o_fat_archentry;
5168
5169typedef struct mach_o_fat_data_struct
5170{
5171 unsigned long magic;
5172 unsigned long nfat_arch;
5173 mach_o_fat_archentry *archentries;
5174} mach_o_fat_data_struct;
5175
5176const bfd_target *
47daa70f 5177bfd_mach_o_fat_archive_p (bfd *abfd)
3af9a47b 5178{
e84d6fca 5179 mach_o_fat_data_struct *adata = NULL;
46d1c23b 5180 struct mach_o_fat_header_external hdr;
3af9a47b
NC		 5181 unsigned long i;
5182
c2f09c75 5183 if (bfd_seek (abfd, 0, SEEK_SET) != 0
46d1c23b 5184 || bfd_bread (&hdr, sizeof (hdr), abfd) != sizeof (hdr))
e84d6fca 5185 goto error;
3af9a47b 5186
116c20d2 5187 adata = bfd_alloc (abfd, sizeof (mach_o_fat_data_struct));
3af9a47b 5188 if (adata == NULL)
e84d6fca 5189 goto error;
a95a4550 5190
46d1c23b
TG		 5191 adata->magic = bfd_getb32 (hdr.magic);
5192 adata->nfat_arch = bfd_getb32 (hdr.nfat_arch);
3af9a47b 5193 if (adata->magic != 0xcafebabe)
e84d6fca 5194 goto error;
27cc28f9
AS		 5195 /* Avoid matching Java bytecode files, which have the same magic number.
5196 In the Java bytecode file format this field contains the JVM version,
5197 which starts at 43.0. */
5198 if (adata->nfat_arch > 30)
5199 goto error;
3af9a47b 5200
c2f09c75 5201 adata->archentries =
64d29018 5202 bfd_alloc2 (abfd, adata->nfat_arch, sizeof (mach_o_fat_archentry));
3af9a47b 5203 if (adata->archentries == NULL)
e84d6fca 5204 goto error;
3af9a47b
NC		 5205
5206 for (i = 0; i < adata->nfat_arch; i++)
5207 {
46d1c23b
TG		 5208 struct mach_o_fat_arch_external arch;
5209 if (bfd_bread (&arch, sizeof (arch), abfd) != sizeof (arch))
e84d6fca 5210 goto error;
46d1c23b
TG		 5211 adata->archentries[i].cputype = bfd_getb32 (arch.cputype);
5212 adata->archentries[i].cpusubtype = bfd_getb32 (arch.cpusubtype);
5213 adata->archentries[i].offset = bfd_getb32 (arch.offset);
5214 adata->archentries[i].size = bfd_getb32 (arch.size);
5215 adata->archentries[i].align = bfd_getb32 (arch.align);
3af9a47b
NC		 5216 }
5217
5218 abfd->tdata.mach_o_fat_data = adata;
64d29018 5219
3af9a47b 5220 return abfd->xvec;
e84d6fca
AM		 5221
5222 error:
5223 if (adata != NULL)
5224 bfd_release (abfd, adata);
5225 bfd_set_error (bfd_error_wrong_format);
5226 return NULL;
3af9a47b
NC		 5227}
5228
a4e241ca
TG		 5229/* Set the filename for a fat binary member ABFD, whose bfd architecture is
5230 ARCH_TYPE/ARCH_SUBTYPE and corresponding entry in header is ENTRY.
5231 Set arelt_data and origin fields too. */
5232
5233static void
5234bfd_mach_o_fat_member_init (bfd *abfd,
5235 enum bfd_architecture arch_type,
5236 unsigned long arch_subtype,
5237 mach_o_fat_archentry *entry)
5238{
5239 struct areltdata *areltdata;
5240 /* Create the member filename. Use ARCH_NAME. */
5241 const bfd_arch_info_type *ap = bfd_lookup_arch (arch_type, arch_subtype);
5242
5243 if (ap)
5244 {
5245 /* Use the architecture name if known. */
1be5090b 5246 abfd->filename = xstrdup (ap->printable_name);
a4e241ca
TG		 5247 }
5248 else
5249 {
5250 /* Forge a uniq id. */
5251 const size_t namelen = 2 + 8 + 1 + 2 + 8 + 1;
1be5090b 5252 char *name = xmalloc (namelen);
a4e241ca
TG		 5253 snprintf (name, namelen, "0x%lx-0x%lx",
5254 entry->cputype, entry->cpusubtype);
5255 abfd->filename = name;
5256 }
5257
06e7acd7 5258 areltdata = bfd_zmalloc (sizeof (struct areltdata));
a4e241ca
TG		 5259 areltdata->parsed_size = entry->size;
5260 abfd->arelt_data = areltdata;
5261 abfd->iostream = NULL;
5262 abfd->origin = entry->offset;
5263}
5264
3af9a47b 5265bfd *
47daa70f 5266bfd_mach_o_fat_openr_next_archived_file (bfd *archive, bfd *prev)
3af9a47b 5267{
e84d6fca 5268 mach_o_fat_data_struct *adata;
3af9a47b
NC		 5269 mach_o_fat_archentry *entry = NULL;
5270 unsigned long i;
15e1c58a 5271 bfd *nbfd;
15e1c58a
TG		 5272 enum bfd_architecture arch_type;
5273 unsigned long arch_subtype;
3af9a47b 5274
e84d6fca 5275 adata = (mach_o_fat_data_struct *) archive->tdata.mach_o_fat_data;
3af9a47b
NC		 5276 BFD_ASSERT (adata != NULL);
5277
5278 /* Find index of previous entry. */
5279 if (prev == NULL)
a4e241ca
TG		 5280 {
5281 /* Start at first one. */
5282 i = 0;
5283 }
3af9a47b
NC		 5284 else
5285 {
a4e241ca 5286 /* Find index of PREV. */
3af9a47b
NC		 5287 for (i = 0; i < adata->nfat_arch; i++)
5288 {
15e1c58a 5289 if (adata->archentries[i].offset == prev->origin)
3af9a47b
NC		 5290 break;
5291 }
5292
5293 if (i == adata->nfat_arch)
5294 {
5295 /* Not found. */
5296 bfd_set_error (bfd_error_bad_value);
a95a4550 5297 return NULL;
3af9a47b 5298 }
a4e241ca
TG		 5299
5300 /* Get next entry. */
5301 i++;
5302 }
a95a4550 5303
3af9a47b
NC		 5304 if (i >= adata->nfat_arch)
5305 {
5306 bfd_set_error (bfd_error_no_more_archived_files);
5307 return NULL;
5308 }
5309
5310 entry = &adata->archentries[i];
15e1c58a
TG		 5311 nbfd = _bfd_new_bfd_contained_in (archive);
5312 if (nbfd == NULL)
5313 return NULL;
5314
15e1c58a
TG		 5315 bfd_mach_o_convert_architecture (entry->cputype, entry->cpusubtype,
5316 &arch_type, &arch_subtype);
846b9259 5317
a4e241ca
TG		 5318 bfd_mach_o_fat_member_init (nbfd, arch_type, arch_subtype, entry);
5319
846b9259 5320 bfd_set_arch_mach (nbfd, arch_type, arch_subtype);
3af9a47b 5321
15e1c58a 5322 return nbfd;
3af9a47b
NC		 5323}
5324
15bbba8d
TG		 5325/* Analogous to stat call. */
5326
5327static int
5328bfd_mach_o_fat_stat_arch_elt (bfd *abfd, struct stat *buf)
5329{
5330 if (abfd->arelt_data == NULL)
5331 {
5332 bfd_set_error (bfd_error_invalid_operation);
5333 return -1;
5334 }
5335
5336 buf->st_mtime = 0;
5337 buf->st_uid = 0;
5338 buf->st_gid = 0;
5339 buf->st_mode = 0644;
5340 buf->st_size = arelt_size (abfd);
5341
5342 return 0;
5343}
5344
846b9259
TG		 5345/* If ABFD format is FORMAT and architecture is ARCH, return it.
5346 If ABFD is a fat image containing a member that corresponds to FORMAT
5347 and ARCH, returns it.
5348 In other case, returns NULL.
5349 This function allows transparent uses of fat images. */
a4e241ca 5350
846b9259
TG		 5351bfd *
5352bfd_mach_o_fat_extract (bfd *abfd,
5353 bfd_format format,
5354 const bfd_arch_info_type *arch)
5355{
5356 bfd *res;
5357 mach_o_fat_data_struct *adata;
5358 unsigned int i;
5359
5360 if (bfd_check_format (abfd, format))
5361 {
5362 if (bfd_get_arch_info (abfd) == arch)
5363 return abfd;
5364 return NULL;
5365 }
5366 if (!bfd_check_format (abfd, bfd_archive)
5367 || abfd->xvec != &mach_o_fat_vec)
5368 return NULL;
c2f09c75 5369
846b9259
TG		 5370 /* This is a Mach-O fat image. */
5371 adata = (mach_o_fat_data_struct *) abfd->tdata.mach_o_fat_data;
5372 BFD_ASSERT (adata != NULL);
5373
5374 for (i = 0; i < adata->nfat_arch; i++)
5375 {
5376 struct mach_o_fat_archentry *e = &adata->archentries[i];
5377 enum bfd_architecture cpu_type;
5378 unsigned long cpu_subtype;
5379
5380 bfd_mach_o_convert_architecture (e->cputype, e->cpusubtype,
5381 &cpu_type, &cpu_subtype);
5382 if (cpu_type != arch->arch || cpu_subtype != arch->mach)
5383 continue;
5384
5385 /* The architecture is found. */
5386 res = _bfd_new_bfd_contained_in (abfd);
5387 if (res == NULL)
5388 return NULL;
5389
a4e241ca 5390 bfd_mach_o_fat_member_init (res, cpu_type, cpu_subtype, e);
846b9259
TG		 5391
5392 if (bfd_check_format (res, format))
5393 {
5394 BFD_ASSERT (bfd_get_arch_info (res) == arch);
5395 return res;
5396 }
5397 bfd_close (res);
5398 return NULL;
5399 }
5400
5401 return NULL;
5402}
5403
3af9a47b 5404int
116c20d2
NC		 5405bfd_mach_o_lookup_command (bfd *abfd,
5406 bfd_mach_o_load_command_type type,
5407 bfd_mach_o_load_command **mcommand)
3af9a47b 5408{
c9ffd2ea
TG		 5409 struct mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
5410 struct bfd_mach_o_load_command *cmd;
5411 unsigned int num;
3af9a47b 5412
c9ffd2ea 5413 BFD_ASSERT (mdata != NULL);
3af9a47b
NC		 5414 BFD_ASSERT (mcommand != NULL);
5415
5416 num = 0;
c9ffd2ea 5417 for (cmd = mdata->first_command; cmd != NULL; cmd = cmd->next)
3af9a47b 5418 {
3af9a47b
NC		 5419 if (cmd->type != type)
5420 continue;
5421
5422 if (num == 0)
c9ffd2ea 5423 *mcommand = cmd;
3af9a47b
NC		 5424 num++;
5425 }
5426
3af9a47b
NC		 5427 return num;
5428}
5429
5430unsigned long
116c20d2 5431bfd_mach_o_stack_addr (enum bfd_mach_o_cpu_type type)
3af9a47b
NC		 5432{
5433 switch (type)
5434 {
5435 case BFD_MACH_O_CPU_TYPE_MC680x0:
5436 return 0x04000000;
5437 case BFD_MACH_O_CPU_TYPE_MC88000:
5438 return 0xffffe000;
5439 case BFD_MACH_O_CPU_TYPE_POWERPC:
5440 return 0xc0000000;
5441 case BFD_MACH_O_CPU_TYPE_I386:
5442 return 0xc0000000;
5443 case BFD_MACH_O_CPU_TYPE_SPARC:
5444 return 0xf0000000;
5445 case BFD_MACH_O_CPU_TYPE_I860:
5446 return 0;
5447 case BFD_MACH_O_CPU_TYPE_HPPA:
e84d6fca 5448 return 0xc0000000 - 0x04000000;
3af9a47b
NC		 5449 default:
5450 return 0;
5451 }
5452}
5453
ab76eeaf
IS		 5454/* The following two tables should be kept, as far as possible, in order of
5455 most frequently used entries to optimize their use from gas. */
5456
c5012cd8 5457const bfd_mach_o_xlat_name bfd_mach_o_section_type_name[] =
046b007d
TG		 5458{
5459 { "regular", BFD_MACH_O_S_REGULAR},
ab76eeaf 5460 { "coalesced", BFD_MACH_O_S_COALESCED},
046b007d
TG		 5461 { "zerofill", BFD_MACH_O_S_ZEROFILL},
5462 { "cstring_literals", BFD_MACH_O_S_CSTRING_LITERALS},
5463 { "4byte_literals", BFD_MACH_O_S_4BYTE_LITERALS},
5464 { "8byte_literals", BFD_MACH_O_S_8BYTE_LITERALS},
ab76eeaf 5465 { "16byte_literals", BFD_MACH_O_S_16BYTE_LITERALS},
046b007d 5466 { "literal_pointers", BFD_MACH_O_S_LITERAL_POINTERS},
046b007d
TG		 5467 { "mod_init_func_pointers", BFD_MACH_O_S_MOD_INIT_FUNC_POINTERS},
5468 { "mod_fini_func_pointers", BFD_MACH_O_S_MOD_FINI_FUNC_POINTERS},
046b007d
TG		 5469 { "gb_zerofill", BFD_MACH_O_S_GB_ZEROFILL},
5470 { "interposing", BFD_MACH_O_S_INTERPOSING},
046b007d 5471 { "dtrace_dof", BFD_MACH_O_S_DTRACE_DOF},
ab76eeaf
IS		 5472 { "non_lazy_symbol_pointers", BFD_MACH_O_S_NON_LAZY_SYMBOL_POINTERS},
5473 { "lazy_symbol_pointers", BFD_MACH_O_S_LAZY_SYMBOL_POINTERS},
a4551119 5474 { "symbol_stubs", BFD_MACH_O_S_SYMBOL_STUBS},
046b007d
TG		 5475 { "lazy_dylib_symbol_pointers", BFD_MACH_O_S_LAZY_DYLIB_SYMBOL_POINTERS},
5476 { NULL, 0}
5477};
5478
c5012cd8 5479const bfd_mach_o_xlat_name bfd_mach_o_section_attribute_name[] =
046b007d 5480{
ab76eeaf
IS		 5481 { "pure_instructions", BFD_MACH_O_S_ATTR_PURE_INSTRUCTIONS },
5482 { "some_instructions", BFD_MACH_O_S_ATTR_SOME_INSTRUCTIONS },
046b007d
TG		 5483 { "loc_reloc", BFD_MACH_O_S_ATTR_LOC_RELOC },
5484 { "ext_reloc", BFD_MACH_O_S_ATTR_EXT_RELOC },
046b007d 5485 { "debug", BFD_MACH_O_S_ATTR_DEBUG },
046b007d
TG		 5486 { "live_support", BFD_MACH_O_S_ATTR_LIVE_SUPPORT },
5487 { "no_dead_strip", BFD_MACH_O_S_ATTR_NO_DEAD_STRIP },
5488 { "strip_static_syms", BFD_MACH_O_S_ATTR_STRIP_STATIC_SYMS },
5489 { "no_toc", BFD_MACH_O_S_ATTR_NO_TOC },
a4551119 5490 { "self_modifying_code", BFD_MACH_O_S_SELF_MODIFYING_CODE },
ab76eeaf 5491 { "modifying_code", BFD_MACH_O_S_SELF_MODIFYING_CODE },
046b007d
TG		 5492 { NULL, 0}
5493};
5494
a4551119 5495/* Get the section type from NAME. Return 256 if NAME is unknown. */
53d58d96
TG		 5496
5497unsigned int
ab76eeaf 5498bfd_mach_o_get_section_type_from_name (bfd *abfd, const char *name)
53d58d96 5499{
afbb9e17 5500 const bfd_mach_o_xlat_name *x;
ab76eeaf 5501 bfd_mach_o_backend_data *bed = bfd_mach_o_get_backend_data (abfd);
53d58d96
TG		 5502
5503 for (x = bfd_mach_o_section_type_name; x->name; x++)
5504 if (strcmp (x->name, name) == 0)
ab76eeaf
IS		 5505 {
5506 /* We found it... does the target support it? */
5507 if (bed->bfd_mach_o_section_type_valid_for_target == NULL
5508 || bed->bfd_mach_o_section_type_valid_for_target (x->val))
5509 return x->val; /* OK. */
5510 else
5511 break; /* Not supported. */
5512 }
a4551119
TG		 5513 /* Maximum section ID = 0xff. */
5514 return 256;
53d58d96
TG		 5515}
5516
5517/* Get the section attribute from NAME. Return -1 if NAME is unknown. */
5518
5519unsigned int
5520bfd_mach_o_get_section_attribute_from_name (const char *name)
5521{
afbb9e17 5522 const bfd_mach_o_xlat_name *x;
53d58d96
TG		 5523
5524 for (x = bfd_mach_o_section_attribute_name; x->name; x++)
5525 if (strcmp (x->name, name) == 0)
5526 return x->val;
5527 return (unsigned int)-1;
5528}
5529
3af9a47b 5530int
116c20d2
NC		 5531bfd_mach_o_core_fetch_environment (bfd *abfd,
5532 unsigned char **rbuf,
5533 unsigned int *rlen)
3af9a47b 5534{
046b007d 5535 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
3af9a47b 5536 unsigned long stackaddr = bfd_mach_o_stack_addr (mdata->header.cputype);
c9ffd2ea 5537 bfd_mach_o_load_command *cmd;
3af9a47b 5538
c9ffd2ea 5539 for (cmd = mdata->first_command; cmd != NULL; cmd = cmd->next)
3af9a47b 5540 {
c9ffd2ea 5541 bfd_mach_o_segment_command *seg;
3af9a47b 5542
c9ffd2ea 5543 if (cmd->type != BFD_MACH_O_LC_SEGMENT)
3af9a47b
NC		 5544 continue;
5545
c9ffd2ea 5546 seg = &cmd->command.segment;
3af9a47b
NC		 5547
5548 if ((seg->vmaddr + seg->vmsize) == stackaddr)
5549 {
5550 unsigned long start = seg->fileoff;
5551 unsigned long end = seg->fileoff + seg->filesize;
5552 unsigned char *buf = bfd_malloc (1024);
5553 unsigned long size = 1024;
5554
5555 for (;;)
5556 {
5557 bfd_size_type nread = 0;
5558 unsigned long offset;
5559 int found_nonnull = 0;
5560
5561 if (size > (end - start))
5562 size = (end - start);
5563
515ef31d
NC		 5564 buf = bfd_realloc_or_free (buf, size);
5565 if (buf == NULL)
5566 return -1;
c2f09c75
TG		 5567
5568 if (bfd_seek (abfd, end - size, SEEK_SET) != 0)
5569 {
5570 free (buf);
5571 return -1;
5572 }
5573
3af9a47b 5574 nread = bfd_bread (buf, size, abfd);
a95a4550 5575
3af9a47b 5576 if (nread != size)
515ef31d
NC		 5577 {
5578 free (buf);
5579 return -1;
5580 }
a95a4550 5581
3af9a47b
NC		 5582 for (offset = 4; offset <= size; offset += 4)
5583 {
e84d6fca 5584 unsigned long val;
3af9a47b 5585
e84d6fca 5586 val = *((unsigned long *) (buf + size - offset));
3af9a47b
NC		 5587 if (! found_nonnull)
5588 {
5589 if (val != 0)
5590 found_nonnull = 1;
5591 }
5592 else if (val == 0x0)
5593 {
e84d6fca
AM		 5594 unsigned long bottom;
5595 unsigned long top;
3af9a47b 5596
e84d6fca
AM		 5597 bottom = seg->fileoff + seg->filesize - offset;
5598 top = seg->fileoff + seg->filesize - 4;
3af9a47b
NC		 5599 *rbuf = bfd_malloc (top - bottom);
5600 *rlen = top - bottom;
5601
5602 memcpy (*rbuf, buf + size - *rlen, *rlen);
515ef31d 5603 free (buf);
3af9a47b
NC		 5604 return 0;
5605 }
5606 }
5607
5608 if (size == (end - start))
5609 break;
5610
5611 size *= 2;
5612 }
515ef31d
NC		 5613
5614 free (buf);
3af9a47b
NC		 5615 }
5616 }
5617
5618 return -1;
5619}
5620
5621char *
116c20d2 5622bfd_mach_o_core_file_failing_command (bfd *abfd)
3af9a47b
NC		 5623{
5624 unsigned char *buf = NULL;
5625 unsigned int len = 0;
452216ab 5626 int ret;
3af9a47b
NC		 5627
5628 ret = bfd_mach_o_core_fetch_environment (abfd, &buf, &len);
5629 if (ret < 0)
5630 return NULL;
5631
f075ee0c 5632 return (char *) buf;
3af9a47b
NC		 5633}
5634
5635int
116c20d2 5636bfd_mach_o_core_file_failing_signal (bfd *abfd ATTRIBUTE_UNUSED)
3af9a47b
NC		 5637{
5638 return 0;
5639}
5640
2ca7691a
TG		 5641static bfd_mach_o_uuid_command *
5642bfd_mach_o_lookup_uuid_command (bfd *abfd)
5643{
09fe2662 5644 bfd_mach_o_load_command *uuid_cmd = NULL;
2ca7691a 5645 int ncmd = bfd_mach_o_lookup_command (abfd, BFD_MACH_O_LC_UUID, &uuid_cmd);
09fe2662 5646 if (ncmd != 1 || uuid_cmd == NULL)
2ca7691a
TG		 5647 return FALSE;
5648 return &uuid_cmd->command.uuid;
5649}
5650
5651/* Return true if ABFD is a dSYM file and its UUID matches UUID_CMD. */
5652
5653static bfd_boolean
5654bfd_mach_o_dsym_for_uuid_p (bfd *abfd, const bfd_mach_o_uuid_command *uuid_cmd)
5655{
5656 bfd_mach_o_uuid_command *dsym_uuid_cmd;
5657
5658 BFD_ASSERT (abfd);
5659 BFD_ASSERT (uuid_cmd);
5660
5661 if (!bfd_check_format (abfd, bfd_object))
5662 return FALSE;
5663
5664 if (bfd_get_flavour (abfd) != bfd_target_mach_o_flavour
5665 || bfd_mach_o_get_data (abfd) == NULL
5666 || bfd_mach_o_get_data (abfd)->header.filetype != BFD_MACH_O_MH_DSYM)
5667 return FALSE;
5668
5669 dsym_uuid_cmd = bfd_mach_o_lookup_uuid_command (abfd);
5670 if (dsym_uuid_cmd == NULL)
5671 return FALSE;
5672
5673 if (memcmp (uuid_cmd->uuid, dsym_uuid_cmd->uuid,
5674 sizeof (uuid_cmd->uuid)) != 0)
5675 return FALSE;
5676
5677 return TRUE;
5678}
5679
5680/* Find a BFD in DSYM_FILENAME which matches ARCH and UUID_CMD.
5681 The caller is responsible for closing the returned BFD object and
5682 its my_archive if the returned BFD is in a fat dSYM. */
5683
5684static bfd *
5685bfd_mach_o_find_dsym (const char *dsym_filename,
5686 const bfd_mach_o_uuid_command *uuid_cmd,
5687 const bfd_arch_info_type *arch)
5688{
5689 bfd *base_dsym_bfd, *dsym_bfd;
5690
5691 BFD_ASSERT (uuid_cmd);
5692
5693 base_dsym_bfd = bfd_openr (dsym_filename, NULL);
5694 if (base_dsym_bfd == NULL)
5695 return NULL;
5696
5697 dsym_bfd = bfd_mach_o_fat_extract (base_dsym_bfd, bfd_object, arch);
5698 if (bfd_mach_o_dsym_for_uuid_p (dsym_bfd, uuid_cmd))
5699 return dsym_bfd;
5700
5701 bfd_close (dsym_bfd);
5702 if (base_dsym_bfd != dsym_bfd)
5703 bfd_close (base_dsym_bfd);
5704
5705 return NULL;
5706}
5707
5708/* Return a BFD created from a dSYM file for ABFD.
5709 The caller is responsible for closing the returned BFD object, its
5710 filename, and its my_archive if the returned BFD is in a fat dSYM. */
5711
5712static bfd *
5713bfd_mach_o_follow_dsym (bfd *abfd)
5714{
5715 char *dsym_filename;
5716 bfd_mach_o_uuid_command *uuid_cmd;
5717 bfd *dsym_bfd, *base_bfd = abfd;
5718 const char *base_basename;
5719
5720 if (abfd == NULL || bfd_get_flavour (abfd) != bfd_target_mach_o_flavour)
5721 return NULL;
5722
b0cffb47 5723 if (abfd->my_archive && !bfd_is_thin_archive (abfd->my_archive))
2ca7691a
TG		 5724 base_bfd = abfd->my_archive;
5725 /* BFD may have been opened from a stream. */
5726 if (base_bfd->filename == NULL)
5727 {
5728 bfd_set_error (bfd_error_invalid_operation);
5729 return NULL;
5730 }
5731 base_basename = lbasename (base_bfd->filename);
5732
5733 uuid_cmd = bfd_mach_o_lookup_uuid_command (abfd);
5734 if (uuid_cmd == NULL)
5735 return NULL;
5736
5737 /* TODO: We assume the DWARF file has the same as the binary's.
5738 It seems apple's GDB checks all files in the dSYM bundle directory.
5739 http://opensource.apple.com/source/gdb/gdb-1708/src/gdb/macosx/macosx-tdep.c
5740 */
5741 dsym_filename = (char *)bfd_malloc (strlen (base_bfd->filename)
5742 + strlen (dsym_subdir) + 1
5743 + strlen (base_basename) + 1);
5744 sprintf (dsym_filename, "%s%s/%s",
5745 base_bfd->filename, dsym_subdir, base_basename);
5746
5747 dsym_bfd = bfd_mach_o_find_dsym (dsym_filename, uuid_cmd,
5748 bfd_get_arch_info (abfd));
5749 if (dsym_bfd == NULL)
5750 free (dsym_filename);
5751
5752 return dsym_bfd;
5753}
5754
d9071b0c
TG		 5755bfd_boolean
5756bfd_mach_o_find_nearest_line (bfd *abfd,
d9071b0c 5757 asymbol **symbols,
fb167eb2 5758 asection *section,
d9071b0c
TG		 5759 bfd_vma offset,
5760 const char **filename_ptr,
5761 const char **functionname_ptr,
fb167eb2
AM		 5762 unsigned int *line_ptr,
5763 unsigned int *discriminator_ptr)
d9071b0c
TG		 5764{
5765 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
2ca7691a 5766 if (mdata == NULL)
d9071b0c 5767 return FALSE;
2ca7691a
TG		 5768 switch (mdata->header.filetype)
5769 {
5770 case BFD_MACH_O_MH_OBJECT:
5771 break;
5772 case BFD_MACH_O_MH_EXECUTE:
5773 case BFD_MACH_O_MH_DYLIB:
5774 case BFD_MACH_O_MH_BUNDLE:
5775 case BFD_MACH_O_MH_KEXT_BUNDLE:
5776 if (mdata->dwarf2_find_line_info == NULL)
5777 {
5778 mdata->dsym_bfd = bfd_mach_o_follow_dsym (abfd);
5779 /* When we couldn't find dSYM for this binary, we look for
5780 the debug information in the binary itself. In this way,
5781 we won't try finding separated dSYM again because
5782 mdata->dwarf2_find_line_info will be filled. */
5783 if (! mdata->dsym_bfd)
5784 break;
5785 if (! _bfd_dwarf2_slurp_debug_info (abfd, mdata->dsym_bfd,
5786 dwarf_debug_sections, symbols,
93ee1e36
AM		 5787 &mdata->dwarf2_find_line_info,
5788 FALSE))
2ca7691a
TG		 5789 return FALSE;
5790 }
5791 break;
5792 default:
5793 return FALSE;
5794 }
fb167eb2
AM		 5795 return _bfd_dwarf2_find_nearest_line (abfd, symbols, NULL, section, offset,
5796 filename_ptr, functionname_ptr,
5797 line_ptr, discriminator_ptr,
5798 dwarf_debug_sections, 0,
5799 &mdata->dwarf2_find_line_info);
d9071b0c
TG		 5800}
5801
5802bfd_boolean
5803bfd_mach_o_close_and_cleanup (bfd *abfd)
5804{
5805 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
5806 if (bfd_get_format (abfd) == bfd_object && mdata != NULL)
4434114c
TG		 5807 {
5808 _bfd_dwarf2_cleanup_debug_info (abfd, &mdata->dwarf2_find_line_info);
5809 bfd_mach_o_free_cached_info (abfd);
2ca7691a
TG		 5810 if (mdata->dsym_bfd != NULL)
5811 {
5812 bfd *fat_bfd = mdata->dsym_bfd->my_archive;
cf466c2a
NC		 5813#if 0
5814 /* FIXME: PR 19435: This calculation to find the memory allocated by
5815 bfd_mach_o_follow_dsym for the filename does not always end up
5816 selecting the correct pointer. Unfortunately this problem is
5817 very hard to reproduce on a non Mach-O native system, so until it
5818 can be traced and fixed on such a system, this code will remain
5819 commented out. This does mean that there will be a memory leak,
5820 but it is small, and happens when we are closing down, so it
c244074c 5821 should not matter too much. */
2ca7691a
TG		 5822 char *dsym_filename = (char *)(fat_bfd
5823 ? fat_bfd->filename
5824 : mdata->dsym_bfd->filename);
cf466c2a 5825#endif
2ca7691a
TG		 5826 bfd_close (mdata->dsym_bfd);
5827 mdata->dsym_bfd = NULL;
5828 if (fat_bfd)
5829 bfd_close (fat_bfd);
cf466c2a 5830#if 0
2ca7691a 5831 free (dsym_filename);
cf466c2a 5832#endif
2ca7691a 5833 }
4434114c 5834 }
dff55db0 5835
d9071b0c
TG		 5836 return _bfd_generic_close_and_cleanup (abfd);
5837}
5838
dff55db0
TG		 5839bfd_boolean bfd_mach_o_free_cached_info (bfd *abfd)
5840{
5841 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
5842 asection *asect;
5843 free (mdata->dyn_reloc_cache);
5844 mdata->dyn_reloc_cache = NULL;
5845 for (asect = abfd->sections; asect != NULL; asect = asect->next)
5846 {
5847 free (asect->relocation);
5848 asect->relocation = NULL;
5849 }
5850
5851 return TRUE;
5852}
5853
68ffbac6 5854#define bfd_mach_o_bfd_reloc_type_lookup _bfd_norelocs_bfd_reloc_type_lookup
92bc0e80
TG		 5855#define bfd_mach_o_bfd_reloc_name_lookup _bfd_norelocs_bfd_reloc_name_lookup
5856
bcb51645 5857#define bfd_mach_o_canonicalize_one_reloc NULL
92bc0e80 5858#define bfd_mach_o_swap_reloc_out NULL
b32e07d7 5859#define bfd_mach_o_print_thread NULL
a4551119 5860#define bfd_mach_o_tgt_seg_table NULL
ab76eeaf 5861#define bfd_mach_o_section_type_valid_for_tgt NULL
92bc0e80 5862
116c20d2
NC		 5863#define TARGET_NAME mach_o_be_vec
5864#define TARGET_STRING "mach-o-be"
42fa0891 5865#define TARGET_ARCHITECTURE bfd_arch_unknown
4384b284 5866#define TARGET_PAGESIZE 1
116c20d2
NC		 5867#define TARGET_BIG_ENDIAN 1
5868#define TARGET_ARCHIVE 0
b93a1992 5869#define TARGET_PRIORITY 1
3af9a47b
NC		 5870#include "mach-o-target.c"
5871
5872#undef TARGET_NAME
5873#undef TARGET_STRING
42fa0891 5874#undef TARGET_ARCHITECTURE
4384b284 5875#undef TARGET_PAGESIZE
3af9a47b
NC		 5876#undef TARGET_BIG_ENDIAN
5877#undef TARGET_ARCHIVE
b93a1992 5878#undef TARGET_PRIORITY
3af9a47b 5879
116c20d2
NC		 5880#define TARGET_NAME mach_o_le_vec
5881#define TARGET_STRING "mach-o-le"
42fa0891 5882#define TARGET_ARCHITECTURE bfd_arch_unknown
4384b284 5883#define TARGET_PAGESIZE 1
116c20d2
NC		 5884#define TARGET_BIG_ENDIAN 0
5885#define TARGET_ARCHIVE 0
b93a1992 5886#define TARGET_PRIORITY 1
3af9a47b
NC		 5887
5888#include "mach-o-target.c"
5889
5890#undef TARGET_NAME
5891#undef TARGET_STRING
42fa0891 5892#undef TARGET_ARCHITECTURE
4384b284 5893#undef TARGET_PAGESIZE
3af9a47b
NC		 5894#undef TARGET_BIG_ENDIAN
5895#undef TARGET_ARCHIVE
b93a1992 5896#undef TARGET_PRIORITY
3af9a47b 5897
8f95b6e4
TG		 5898/* Not yet handled: creating an archive. */
5899#define bfd_mach_o_mkarchive _bfd_noarchive_mkarchive
5900
47daa70f
TG		 5901#define bfd_mach_o_close_and_cleanup bfd_true
5902
8f95b6e4 5903/* Not used. */
15bbba8d 5904#define bfd_mach_o_generic_stat_arch_elt bfd_mach_o_fat_stat_arch_elt
47daa70f
TG		 5905#define bfd_mach_o_openr_next_archived_file bfd_mach_o_fat_openr_next_archived_file
5906#define bfd_mach_o_archive_p bfd_mach_o_fat_archive_p
8f95b6e4 5907
116c20d2
NC		 5908#define TARGET_NAME mach_o_fat_vec
5909#define TARGET_STRING "mach-o-fat"
42fa0891 5910#define TARGET_ARCHITECTURE bfd_arch_unknown
4384b284 5911#define TARGET_PAGESIZE 1
116c20d2
NC		 5912#define TARGET_BIG_ENDIAN 1
5913#define TARGET_ARCHIVE 1
b93a1992 5914#define TARGET_PRIORITY 0
3af9a47b
NC		 5915
5916#include "mach-o-target.c"
5917
5918#undef TARGET_NAME
5919#undef TARGET_STRING
42fa0891 5920#undef TARGET_ARCHITECTURE
4384b284 5921#undef TARGET_PAGESIZE
3af9a47b
NC		 5922#undef TARGET_BIG_ENDIAN
5923#undef TARGET_ARCHIVE
b93a1992 5924#undef TARGET_PRIORITY
GDB Binutils - Deliverables
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