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Remove syntactic sugar
[deliverable/binutils-gdb.git] / bfd / mach-o.c
CommitLineData
3af9a47b 1/* Mach-O support for BFD.
6f2750fe 2 Copyright (C) 1999-2016 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
86eafac0
NC		 2819 (_("section address (%lx) below start of segment (%lx)"),
2820 (unsigned long) s->addr, (unsigned long) vma);
2821 return FALSE;
2822 }
2823
c9ffd2ea 2824 vma = s->addr + s->size;
7f307238
IS		 2825 }
2826
c9ffd2ea
TG		 2827 /* Set segment file offset: make it page aligned. */
2828 vma = seg->sect_head->addr;
2829 seg->vmaddr = vma & ~pagemask;
2830 if ((mdata->filelen & pagemask) > (vma & pagemask))
2831 mdata->filelen += pagemask + 1;
2832 seg->fileoff = mdata->filelen & ~pagemask;
2833 mdata->filelen = seg->fileoff + (vma & pagemask);
7f307238 2834
c9ffd2ea
TG		 2835 /* Set section file offset. */
2836 for (s = seg->sect_head; s != NULL; s = s->next)
7f307238 2837 {
c9ffd2ea
TG		 2838 asection *sec = s->bfdsection;
2839 flagword flags = bfd_get_section_flags (abfd, sec);
b22161d6 2840
c9ffd2ea
TG		 2841 /* Adjust segment size. */
2842 seg->vmsize = FILE_ALIGN (seg->vmsize, s->align);
2843 seg->vmsize += s->size;
2844
2845 /* File offset and length. */
2846 seg->filesize = FILE_ALIGN (seg->filesize, s->align);
2847
2848 if ((s->flags & BFD_MACH_O_SECTION_TYPE_MASK) != BFD_MACH_O_S_ZEROFILL
2849 && ((s->flags & BFD_MACH_O_SECTION_TYPE_MASK)
2850 != BFD_MACH_O_S_GB_ZEROFILL))
b22161d6 2851 {
c9ffd2ea
TG		 2852 mdata->filelen = FILE_ALIGN (mdata->filelen, s->align);
2853
2854 s->offset = mdata->filelen;
2855 s->bfdsection->filepos = s->offset;
2856
2857 seg->filesize += s->size;
2858 mdata->filelen += s->size;
b22161d6 2859 }
c9ffd2ea 2860 else
b22161d6 2861 {
c9ffd2ea
TG		 2862 s->offset = 0;
2863 s->bfdsection->filepos = 0;
2864 }
2865
2866 /* Set protection. */
2867 if (flags & SEC_LOAD)
2868 {
2869 if (flags & SEC_CODE)
2870 seg->initprot |= BFD_MACH_O_PROT_READ | BFD_MACH_O_PROT_EXECUTE;
2871 if ((flags & (SEC_DATA | SEC_READONLY)) == SEC_DATA)
2872 seg->initprot |= BFD_MACH_O_PROT_WRITE | BFD_MACH_O_PROT_READ;
b22161d6 2873 }
c9ffd2ea
TG		 2874
2875 /* Relocs shouldn't appear in non-object files. */
2876 if (s->bfdsection->reloc_count != 0)
2877 return FALSE;
b22161d6 2878 }
c9ffd2ea
TG		 2879
2880 /* Set maxprot. */
2881 if (seg->initprot != 0)
2882 seg->maxprot = BFD_MACH_O_PROT_READ | BFD_MACH_O_PROT_WRITE
2883 | BFD_MACH_O_PROT_EXECUTE;
b22161d6 2884 else
c9ffd2ea 2885 seg->maxprot = 0;
b22161d6 2886
c9ffd2ea
TG		 2887 /* Round segment size (and file size). */
2888 seg->vmsize = (seg->vmsize + pagemask) & ~pagemask;
2889 seg->filesize = (seg->filesize + pagemask) & ~pagemask;
2890 mdata->filelen = (mdata->filelen + pagemask) & ~pagemask;
7f307238 2891
c9ffd2ea
TG		 2892 return TRUE;
2893}
68ffbac6 2894
c9ffd2ea
TG		 2895/* Layout the commands: set commands size and offset, set ncmds and sizeofcmds
2896 fields in header. */
68ffbac6 2897
86eafac0 2898static bfd_boolean
c9ffd2ea
TG		 2899bfd_mach_o_layout_commands (bfd_mach_o_data_struct *mdata)
2900{
2901 unsigned wide = mach_o_wide_p (&mdata->header);
2902 unsigned int hdrlen;
2903 ufile_ptr offset;
2904 bfd_mach_o_load_command *cmd;
2905 unsigned int align;
86eafac0 2906 bfd_boolean ret = TRUE;
c9ffd2ea
TG		 2907
2908 hdrlen = wide ? BFD_MACH_O_HEADER_64_SIZE : BFD_MACH_O_HEADER_SIZE;
2909 align = wide ? 8 - 1 : 4 - 1;
2910 offset = hdrlen;
2911 mdata->header.ncmds = 0;
50d10658 2912
c9ffd2ea
TG		 2913 for (cmd = mdata->first_command; cmd; cmd = cmd->next)
2914 {
2915 mdata->header.ncmds++;
2916 cmd->offset = offset;
68ffbac6 2917
c9ffd2ea
TG		 2918 switch (cmd->type)
2919 {
2920 case BFD_MACH_O_LC_SEGMENT_64:
2921 cmd->len = BFD_MACH_O_LC_SEGMENT_64_SIZE
2922 + BFD_MACH_O_SECTION_64_SIZE * cmd->command.segment.nsects;
2923 break;
2924 case BFD_MACH_O_LC_SEGMENT:
2925 cmd->len = BFD_MACH_O_LC_SEGMENT_SIZE
2926 + BFD_MACH_O_SECTION_SIZE * cmd->command.segment.nsects;
2927 break;
2928 case BFD_MACH_O_LC_SYMTAB:
2929 cmd->len = sizeof (struct mach_o_symtab_command_external)
2930 + BFD_MACH_O_LC_SIZE;
2931 break;
2932 case BFD_MACH_O_LC_DYSYMTAB:
2933 cmd->len = sizeof (struct mach_o_dysymtab_command_external)
2934 + BFD_MACH_O_LC_SIZE;
2935 break;
2936 case BFD_MACH_O_LC_LOAD_DYLIB:
2937 cmd->len = sizeof (struct mach_o_dylib_command_external)
2938 + BFD_MACH_O_LC_SIZE;
2939 cmd->command.dylib.name_offset = cmd->len;
2940 cmd->len += strlen (cmd->command.dylib.name_str);
2941 cmd->len = (cmd->len + align) & ~align;
2942 break;
2943 case BFD_MACH_O_LC_LOAD_DYLINKER:
2944 cmd->len = sizeof (struct mach_o_str_command_external)
2945 + BFD_MACH_O_LC_SIZE;
2946 cmd->command.dylinker.name_offset = cmd->len;
2947 cmd->len += strlen (cmd->command.dylinker.name_str);
2948 cmd->len = (cmd->len + align) & ~align;
2949 break;
2950 case BFD_MACH_O_LC_MAIN:
2951 cmd->len = sizeof (struct mach_o_entry_point_command_external)
2952 + BFD_MACH_O_LC_SIZE;
2953 break;
2954 case BFD_MACH_O_LC_DYLD_INFO:
2955 cmd->len = sizeof (struct mach_o_dyld_info_command_external)
2956 + BFD_MACH_O_LC_SIZE;
2957 break;
2958 default:
4eca0228 2959 _bfd_error_handler
c9ffd2ea
TG		 2960 (_("unable to layout unknown load command 0x%lx"),
2961 (unsigned long) cmd->type);
86eafac0 2962 ret = FALSE;
c9ffd2ea 2963 break;
7f307238 2964 }
c9ffd2ea
TG		 2965
2966 BFD_ASSERT (cmd->len % (align + 1) == 0);
2967 offset += cmd->len;
7f307238 2968 }
c9ffd2ea
TG		 2969 mdata->header.sizeofcmds = offset - hdrlen;
2970 mdata->filelen = offset;
86eafac0
NC		 2971
2972 return ret;
c9ffd2ea 2973}
7f307238 2974
c9ffd2ea
TG		 2975/* Subroutine of bfd_mach_o_build_commands: set type, name and nsects of a
2976 segment. */
2977
2978static void
2979bfd_mach_o_init_segment (bfd_mach_o_data_struct *mdata,
2980 bfd_mach_o_load_command *cmd,
2981 const char *segname, unsigned int nbr_sect)
2982{
2983 bfd_mach_o_segment_command *seg = &cmd->command.segment;
2984 unsigned wide = mach_o_wide_p (&mdata->header);
2985
2986 /* Init segment command. */
2987 cmd->type = wide ? BFD_MACH_O_LC_SEGMENT_64 : BFD_MACH_O_LC_SEGMENT;
2988 cmd->type_required = FALSE;
2989
2990 strcpy (seg->segname, segname);
2991 seg->nsects = nbr_sect;
2992
2993 seg->vmaddr = 0;
2994 seg->vmsize = 0;
2995
2996 seg->fileoff = 0;
2997 seg->filesize = 0;
2998 seg->maxprot = 0;
2999 seg->initprot = 0;
3000 seg->flags = 0;
3001 seg->sect_head = NULL;
3002 seg->sect_tail = NULL;
7f307238
IS		 3003}
3004
3005/* Build Mach-O load commands (currently assuming an MH_OBJECT file).
3006 TODO: Other file formats, rebuilding symtab/dysymtab commands for strip
3007 and copy functionality. */
154a1ee5
TG		 3008
3009bfd_boolean
3010bfd_mach_o_build_commands (bfd *abfd)
3011{
046b007d 3012 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
bbd56171 3013 unsigned wide = mach_o_wide_p (&mdata->header);
c9ffd2ea
TG		 3014 unsigned int nbr_segcmd = 0;
3015 bfd_mach_o_load_command *commands;
3016 unsigned int nbr_commands;
bbd56171
IS		 3017 int symtab_idx = -1;
3018 int dysymtab_idx = -1;
c9ffd2ea
TG		 3019 int main_idx = -1;
3020 unsigned int i;
154a1ee5 3021
c9ffd2ea
TG		 3022 /* Return now if already built. */
3023 if (mdata->header.ncmds != 0)
3024 return TRUE;
154a1ee5 3025
7f307238 3026 /* Fill in the file type, if not already set. */
7f307238 3027 if (mdata->header.filetype == 0)
154a1ee5 3028 {
7f307238
IS		 3029 if (abfd->flags & EXEC_P)
3030 mdata->header.filetype = BFD_MACH_O_MH_EXECUTE;
3031 else if (abfd->flags & DYNAMIC)
3032 mdata->header.filetype = BFD_MACH_O_MH_DYLIB;
3033 else
3034 mdata->header.filetype = BFD_MACH_O_MH_OBJECT;
154a1ee5 3035 }
7f307238
IS		 3036
3037 /* If hasn't already been done, flatten sections list, and sort
3038 if/when required. Must be done before the symbol table is adjusted,
3039 since that depends on properly numbered sections. */
3040 if (mdata->nsects == 0 || mdata->sections == NULL)
3041 if (! bfd_mach_o_mangle_sections (abfd, mdata))
3042 return FALSE;
3043
3044 /* Order the symbol table, fill-in/check mach-o specific fields and
3045 partition out any indirect symbols. */
b22161d6 3046 if (!bfd_mach_o_mangle_symbols (abfd))
7f307238
IS		 3047 return FALSE;
3048
c9ffd2ea
TG		 3049 /* Segment commands. */
3050 if (mdata->header.filetype == BFD_MACH_O_MH_OBJECT)
3051 {
3052 /* Only one segment for all the sections. But the segment is
3053 optional if there is no sections. */
3054 nbr_segcmd = (mdata->nsects > 0) ? 1 : 0;
3055 }
3056 else
3057 {
3058 bfd_mach_o_section *prev_sect = NULL;
bbd56171 3059
c9ffd2ea
TG		 3060 /* One pagezero segment and one linkedit segment. */
3061 nbr_segcmd = 2;
bbd56171 3062
c9ffd2ea
TG		 3063 /* Create one segment for associated segment name in sections.
3064 Assume that sections with the same segment name are consecutive. */
3065 for (i = 0; i < mdata->nsects; i++)
3066 {
3067 bfd_mach_o_section *this_sect = mdata->sections[i];
bbd56171 3068
c9ffd2ea
TG		 3069 if (prev_sect == NULL
3070 || strcmp (prev_sect->segname, this_sect->segname) != 0)
3071 {
3072 nbr_segcmd++;
3073 prev_sect = this_sect;
3074 }
3075 }
154a1ee5 3076 }
154a1ee5 3077
c9ffd2ea
TG		 3078 nbr_commands = nbr_segcmd;
3079
3080 /* One command for the symbol table (only if there are symbols. */
7f307238 3081 if (bfd_get_symcount (abfd) > 0)
c9ffd2ea 3082 symtab_idx = nbr_commands++;
c2f09c75 3083
bbd56171
IS		 3084 /* FIXME:
3085 This is a rather crude test for whether we should build a dysymtab. */
3086 if (bfd_mach_o_should_emit_dysymtab ()
3087 && bfd_get_symcount (abfd))
3088 {
bbd56171
IS		 3089 /* If there should be a case where a dysymtab could be emitted without
3090 a symtab (seems improbable), this would need amending. */
c9ffd2ea 3091 dysymtab_idx = nbr_commands++;
bbd56171 3092 }
154a1ee5 3093
c9ffd2ea
TG		 3094 /* Add an entry point command. */
3095 if (mdata->header.filetype == BFD_MACH_O_MH_EXECUTE
3096 && bfd_get_start_address (abfd) != 0)
3097 main_idx = nbr_commands++;
c2f09c75 3098
bbd56171 3099 /* Well, we must have a header, at least. */
c9ffd2ea 3100 mdata->filelen = wide ? BFD_MACH_O_HEADER_64_SIZE : BFD_MACH_O_HEADER_SIZE;
f1bde64c 3101
bbd56171 3102 /* A bit unusual, but no content is valid;
7f307238 3103 as -n empty.s -o empty.o */
c9ffd2ea
TG		 3104 if (nbr_commands == 0)
3105 {
3106 /* Layout commands (well none...) and set headers command fields. */
86eafac0 3107 return bfd_mach_o_layout_commands (mdata);
c9ffd2ea 3108 }
f1bde64c 3109
c9ffd2ea
TG		 3110 /* Create commands for segments (and symtabs), prepend them. */
3111 commands = bfd_zalloc (abfd, nbr_commands * sizeof (bfd_mach_o_load_command));
3112 if (commands == NULL)
7f307238 3113 return FALSE;
c9ffd2ea
TG		 3114 for (i = 0; i < nbr_commands - 1; i++)
3115 commands[i].next = &commands[i + 1];
3116 commands[nbr_commands - 1].next = mdata->first_command;
3117 if (mdata->first_command == NULL)
3118 mdata->last_command = &commands[nbr_commands - 1];
3119 mdata->first_command = &commands[0];
3120
3121 if (mdata->header.filetype == BFD_MACH_O_MH_OBJECT && nbr_segcmd != 0)
3122 {
3123 /* For object file, there is only one segment. */
3124 bfd_mach_o_init_segment (mdata, &commands[0], "", mdata->nsects);
3125 }
3126 else if (nbr_segcmd != 0)
68ffbac6 3127 {
c9ffd2ea 3128 bfd_mach_o_load_command *cmd;
7f307238 3129
c9ffd2ea 3130 BFD_ASSERT (nbr_segcmd >= 2);
7f307238 3131
c9ffd2ea
TG		 3132 /* The pagezero. */
3133 cmd = &commands[0];
3134 bfd_mach_o_init_segment (mdata, cmd, "__PAGEZERO", 0);
3135
3136 /* Segments from sections. */
3137 cmd++;
3138 for (i = 0; i < mdata->nsects;)
7f307238 3139 {
c9ffd2ea
TG		 3140 const char *segname = mdata->sections[i]->segname;
3141 unsigned int nbr_sect = 1;
3142
3143 /* Count number of sections for this segment. */
3144 for (i++; i < mdata->nsects; i++)
3145 if (strcmp (mdata->sections[i]->segname, segname) == 0)
3146 nbr_sect++;
3147 else
3148 break;
3149
3150 bfd_mach_o_init_segment (mdata, cmd, segname, nbr_sect);
3151 cmd++;
7f307238 3152 }
bbd56171 3153
c9ffd2ea
TG		 3154 /* The linkedit. */
3155 bfd_mach_o_init_segment (mdata, cmd, "__LINKEDIT", 0);
7f307238 3156 }
f1bde64c 3157
bbd56171 3158 if (symtab_idx >= 0)
7f307238
IS		 3159 {
3160 /* Init symtab command. */
c9ffd2ea 3161 bfd_mach_o_load_command *cmd = &commands[symtab_idx];
68ffbac6 3162
bbd56171 3163 cmd->type = BFD_MACH_O_LC_SYMTAB;
bbd56171 3164 cmd->type_required = FALSE;
7f307238 3165 }
154a1ee5 3166
bbd56171
IS		 3167 /* If required, setup symtab command, see comment above about the quality
3168 of this test. */
3169 if (dysymtab_idx >= 0)
7f307238 3170 {
c9ffd2ea 3171 bfd_mach_o_load_command *cmd = &commands[dysymtab_idx];
bbd56171 3172
7f307238 3173 cmd->type = BFD_MACH_O_LC_DYSYMTAB;
7f307238 3174 cmd->type_required = FALSE;
c9ffd2ea
TG		 3175 }
3176
3177 /* Create the main command. */
3178 if (main_idx >= 0)
3179 {
3180 bfd_mach_o_load_command *cmd = &commands[main_idx];
7f307238 3181
c9ffd2ea
TG		 3182 cmd->type = BFD_MACH_O_LC_MAIN;
3183 cmd->type_required = TRUE;
3184
3185 cmd->command.main.entryoff = 0;
3186 cmd->command.main.stacksize = 0;
154a1ee5 3187 }
154a1ee5 3188
c9ffd2ea 3189 /* Layout commands. */
86eafac0
NC		 3190 if (! bfd_mach_o_layout_commands (mdata))
3191 return FALSE;
c9ffd2ea 3192
7f307238
IS		 3193 /* So, now we have sized the commands and the filelen set to that.
3194 Now we can build the segment command and set the section file offsets. */
c9ffd2ea
TG		 3195 if (mdata->header.filetype == BFD_MACH_O_MH_OBJECT)
3196 {
3197 for (i = 0; i < nbr_segcmd; i++)
3198 if (!bfd_mach_o_build_obj_seg_command
3199 (abfd, &commands[i].command.segment))
3200 return FALSE;
3201 }
3202 else
3203 {
3204 bfd_vma maxvma = 0;
7f307238 3205
c9ffd2ea
TG		 3206 /* Skip pagezero and linkedit segments. */
3207 for (i = 1; i < nbr_segcmd - 1; i++)
3208 {
3209 bfd_mach_o_segment_command *seg = &commands[i].command.segment;
3210
3211 if (!bfd_mach_o_build_exec_seg_command (abfd, seg))
3212 return FALSE;
3213
3214 if (seg->vmaddr + seg->vmsize > maxvma)
3215 maxvma = seg->vmaddr + seg->vmsize;
3216 }
3217
3218 /* Set the size of __PAGEZERO. */
3219 commands[0].command.segment.vmsize =
3220 commands[1].command.segment.vmaddr;
3221
3222 /* Set the vma and fileoff of __LINKEDIT. */
3223 commands[nbr_segcmd - 1].command.segment.vmaddr = maxvma;
3224 commands[nbr_segcmd - 1].command.segment.fileoff = mdata->filelen;
3225
3226 /* Set entry point (once segments have been laid out). */
3227 if (main_idx >= 0)
3228 commands[main_idx].command.main.entryoff =
3229 bfd_get_start_address (abfd) - commands[1].command.segment.vmaddr;
3230 }
7f307238 3231
154a1ee5
TG		 3232 return TRUE;
3233}
3234
3235/* Set the contents of a section. */
3236
3237bfd_boolean
3238bfd_mach_o_set_section_contents (bfd *abfd,
3239 asection *section,
3240 const void * location,
3241 file_ptr offset,
3242 bfd_size_type count)
3243{
3244 file_ptr pos;
3245
7f307238
IS		 3246 /* Trying to write the first section contents will trigger the creation of
3247 the load commands if they are not already present. */
c9ffd2ea 3248 if (!abfd->output_has_begun && !bfd_mach_o_build_commands (abfd))
154a1ee5
TG		 3249 return FALSE;
3250
3251 if (count == 0)
3252 return TRUE;
3253
3254 pos = section->filepos + offset;
3255 if (bfd_seek (abfd, pos, SEEK_SET) != 0
3256 || bfd_bwrite (location, count, abfd) != count)
3257 return FALSE;
3258
3259 return TRUE;
3260}
3261
3262int
116c20d2 3263bfd_mach_o_sizeof_headers (bfd *a ATTRIBUTE_UNUSED,
a6b96beb 3264 struct bfd_link_info *info ATTRIBUTE_UNUSED)
3af9a47b
NC		 3265{
3266 return 0;
3267}
3268
3269/* Make an empty symbol. This is required only because
3270 bfd_make_section_anyway wants to create a symbol for the section. */
3271
154a1ee5 3272asymbol *
116c20d2 3273bfd_mach_o_make_empty_symbol (bfd *abfd)
3af9a47b 3274{
d3ce72d0
NC		 3275 asymbol *new_symbol;
3276
3277 new_symbol = bfd_zalloc (abfd, sizeof (bfd_mach_o_asymbol));
3278 if (new_symbol == NULL)
3279 return new_symbol;
3280 new_symbol->the_bfd = abfd;
b22161d6 3281 new_symbol->udata.i = SYM_MACHO_FIELDS_UNSET;
d3ce72d0 3282 return new_symbol;
3af9a47b
NC		 3283}
3284
154a1ee5 3285static bfd_boolean
47daa70f 3286bfd_mach_o_read_header (bfd *abfd, file_ptr hdr_off, bfd_mach_o_header *header)
3af9a47b 3287{
46d1c23b 3288 struct mach_o_header_external raw;
1e8a024a 3289 unsigned int size;
edeb6e24 3290 bfd_vma (*get32) (const void *) = NULL;
3af9a47b 3291
1e8a024a 3292 /* Just read the magic number. */
47daa70f 3293 if (bfd_seek (abfd, hdr_off, SEEK_SET) != 0
46d1c23b 3294 || bfd_bread (raw.magic, sizeof (raw.magic), abfd) != 4)
154a1ee5 3295 return FALSE;
3af9a47b 3296
46d1c23b 3297 if (bfd_getb32 (raw.magic) == BFD_MACH_O_MH_MAGIC)
3af9a47b
NC		 3298 {
3299 header->byteorder = BFD_ENDIAN_BIG;
154a1ee5 3300 header->magic = BFD_MACH_O_MH_MAGIC;
1e8a024a 3301 header->version = 1;
3af9a47b
NC		 3302 get32 = bfd_getb32;
3303 }
46d1c23b 3304 else if (bfd_getl32 (raw.magic) == BFD_MACH_O_MH_MAGIC)
3af9a47b 3305 {
a95a4550 3306 header->byteorder = BFD_ENDIAN_LITTLE;
154a1ee5 3307 header->magic = BFD_MACH_O_MH_MAGIC;
1e8a024a
TG		 3308 header->version = 1;
3309 get32 = bfd_getl32;
3310 }
46d1c23b 3311 else if (bfd_getb32 (raw.magic) == BFD_MACH_O_MH_MAGIC_64)
1e8a024a
TG		 3312 {
3313 header->byteorder = BFD_ENDIAN_BIG;
154a1ee5 3314 header->magic = BFD_MACH_O_MH_MAGIC_64;
1e8a024a
TG		 3315 header->version = 2;
3316 get32 = bfd_getb32;
3317 }
46d1c23b 3318 else if (bfd_getl32 (raw.magic) == BFD_MACH_O_MH_MAGIC_64)
1e8a024a
TG		 3319 {
3320 header->byteorder = BFD_ENDIAN_LITTLE;
154a1ee5 3321 header->magic = BFD_MACH_O_MH_MAGIC_64;
1e8a024a 3322 header->version = 2;
3af9a47b
NC		 3323 get32 = bfd_getl32;
3324 }
3325 else
3326 {
3327 header->byteorder = BFD_ENDIAN_UNKNOWN;
154a1ee5 3328 return FALSE;
3af9a47b 3329 }
a95a4550 3330
1e8a024a 3331 /* Once the size of the header is known, read the full header. */
c2f09c75 3332 size = mach_o_wide_p (header) ?
154a1ee5 3333 BFD_MACH_O_HEADER_64_SIZE : BFD_MACH_O_HEADER_SIZE;
1e8a024a 3334
47daa70f 3335 if (bfd_seek (abfd, hdr_off, SEEK_SET) != 0
46d1c23b 3336 || bfd_bread (&raw, size, abfd) != size)
154a1ee5 3337 return FALSE;
1e8a024a 3338
46d1c23b
TG		 3339 header->cputype = (*get32) (raw.cputype);
3340 header->cpusubtype = (*get32) (raw.cpusubtype);
3341 header->filetype = (*get32) (raw.filetype);
3342 header->ncmds = (*get32) (raw.ncmds);
3343 header->sizeofcmds = (*get32) (raw.sizeofcmds);
3344 header->flags = (*get32) (raw.flags);
3af9a47b 3345
c2f09c75 3346 if (mach_o_wide_p (header))
46d1c23b 3347 header->reserved = (*get32) (raw.reserved);
facf03f2
TG		 3348 else
3349 header->reserved = 0;
1e8a024a 3350
154a1ee5 3351 return TRUE;
3af9a47b
NC		 3352}
3353
f1bde64c
TG		 3354bfd_boolean
3355bfd_mach_o_new_section_hook (bfd *abfd, asection *sec)
3356{
3357 bfd_mach_o_section *s;
a4551119 3358 unsigned bfdalign = bfd_get_section_alignment (abfd, sec);
f1bde64c
TG		 3359
3360 s = bfd_mach_o_get_mach_o_section (sec);
3361 if (s == NULL)
3362 {
3363 flagword bfd_flags;
a4551119 3364 static const mach_o_section_name_xlat * xlat;
f1bde64c
TG		 3365
3366 s = (bfd_mach_o_section *) bfd_zalloc (abfd, sizeof (*s));
3367 if (s == NULL)
3368 return FALSE;
3369 sec->used_by_bfd = s;
3370 s->bfdsection = sec;
3371
a4551119
TG		 3372 /* Create the Darwin seg/sect name pair from the bfd name.
3373 If this is a canonical name for which a specific paiting exists
3374 there will also be defined flags, type, attribute and alignment
3375 values. */
3376 xlat = bfd_mach_o_convert_section_name_to_mach_o (abfd, sec, s);
3377 if (xlat != NULL)
3378 {
3379 s->flags = xlat->macho_sectype | xlat->macho_secattr;
68ffbac6 3380 s->align = xlat->sectalign > bfdalign ? xlat->sectalign
a4551119 3381 : bfdalign;
a253d456 3382 (void) bfd_set_section_alignment (abfd, sec, s->align);
a4551119
TG		 3383 bfd_flags = bfd_get_section_flags (abfd, sec);
3384 if (bfd_flags == SEC_NO_FLAGS)
3385 bfd_set_section_flags (abfd, sec, xlat->bfd_flags);
3386 }
f1bde64c 3387 else
a4551119
TG		 3388 /* Create default flags. */
3389 bfd_mach_o_set_section_flags_from_bfd (abfd, sec);
f1bde64c
TG		 3390 }
3391
3392 return _bfd_generic_new_section_hook (abfd, sec);
3393}
3394
3395static void
3396bfd_mach_o_init_section_from_mach_o (bfd *abfd, asection *sec,
3397 unsigned long prot)
3af9a47b 3398{
117ed4f8 3399 flagword flags;
f1bde64c 3400 bfd_mach_o_section *section;
3af9a47b 3401
f1bde64c
TG		 3402 flags = bfd_get_section_flags (abfd, sec);
3403 section = bfd_mach_o_get_mach_o_section (sec);
3af9a47b 3404
a4551119
TG		 3405 /* TODO: see if we should use the xlat system for doing this by
3406 preference and fall back to this for unknown sections. */
3407
8462aec7 3408 if (flags == SEC_NO_FLAGS)
ef17cb22 3409 {
8462aec7
TG		 3410 /* Try to guess flags. */
3411 if (section->flags & BFD_MACH_O_S_ATTR_DEBUG)
3412 flags = SEC_DEBUGGING;
3413 else
3414 {
3415 flags = SEC_ALLOC;
3416 if ((section->flags & BFD_MACH_O_SECTION_TYPE_MASK)
3417 != BFD_MACH_O_S_ZEROFILL)
3418 {
3419 flags |= SEC_LOAD;
3420 if (prot & BFD_MACH_O_PROT_EXECUTE)
3421 flags |= SEC_CODE;
3422 if (prot & BFD_MACH_O_PROT_WRITE)
3423 flags |= SEC_DATA;
3424 else if (prot & BFD_MACH_O_PROT_READ)
3425 flags |= SEC_READONLY;
3426 }
3427 }
ef17cb22 3428 }
15e1c58a
TG		 3429 else
3430 {
8462aec7
TG		 3431 if ((flags & SEC_DEBUGGING) == 0)
3432 flags |= SEC_ALLOC;
15e1c58a 3433 }
8462aec7
TG		 3434
3435 if (section->offset != 0)
3436 flags |= SEC_HAS_CONTENTS;
92bc0e80
TG		 3437 if (section->nreloc != 0)
3438 flags |= SEC_RELOC;
3439
f1bde64c
TG		 3440 bfd_set_section_flags (abfd, sec, flags);
3441
3442 sec->vma = section->addr;
3443 sec->lma = section->addr;
3444 sec->size = section->size;
3445 sec->filepos = section->offset;
3446 sec->alignment_power = section->align;
3447 sec->segment_mark = 0;
3448 sec->reloc_count = section->nreloc;
3449 sec->rel_filepos = section->reloff;
3450}
3451
3452static asection *
3453bfd_mach_o_make_bfd_section (bfd *abfd,
3454 const unsigned char *segname,
3455 const unsigned char *sectname)
3456{
3457 const char *sname;
3458 flagword flags;
a95a4550 3459
f1bde64c
TG		 3460 bfd_mach_o_convert_section_name_to_bfd
3461 (abfd, (const char *)segname, (const char *)sectname, &sname, &flags);
3462 if (sname == NULL)
3463 return NULL;
3af9a47b 3464
f1bde64c 3465 return bfd_make_section_anyway_with_flags (abfd, sname, flags);
3af9a47b
NC		 3466}
3467
f1bde64c 3468static asection *
47daa70f 3469bfd_mach_o_read_section_32 (bfd *abfd, unsigned long prot)
3af9a47b 3470{
46d1c23b 3471 struct mach_o_section_32_external raw;
f1bde64c
TG		 3472 asection *sec;
3473 bfd_mach_o_section *section;
3af9a47b 3474
47daa70f
TG		 3475 if (bfd_bread (&raw, BFD_MACH_O_SECTION_SIZE, abfd)
3476 != BFD_MACH_O_SECTION_SIZE)
f1bde64c 3477 return NULL;
a95a4550 3478
5a5cbf72 3479 sec = bfd_mach_o_make_bfd_section (abfd, raw.segname, raw.sectname);
f1bde64c
TG		 3480 if (sec == NULL)
3481 return NULL;
3482
3483 section = bfd_mach_o_get_mach_o_section (sec);
3484 memcpy (section->segname, raw.segname, sizeof (raw.segname));
3485 section->segname[BFD_MACH_O_SEGNAME_SIZE] = 0;
3486 memcpy (section->sectname, raw.sectname, sizeof (raw.sectname));
69499dca 3487 section->sectname[BFD_MACH_O_SECTNAME_SIZE] = 0;
46d1c23b
TG		 3488 section->addr = bfd_h_get_32 (abfd, raw.addr);
3489 section->size = bfd_h_get_32 (abfd, raw.size);
3490 section->offset = bfd_h_get_32 (abfd, raw.offset);
3491 section->align = bfd_h_get_32 (abfd, raw.align);
c86934ce
NC		 3492 /* PR 17512: file: 0017eb76. */
3493 if (section->align > 64)
3494 {
4eca0228
AM		 3495 _bfd_error_handler
3496 (_("bfd_mach_o_read_section_32: overlarge alignment value: 0x%x, "
3497 "using 32 instead"), section->align);
c86934ce
NC		 3498 section->align = 32;
3499 }
46d1c23b
TG		 3500 section->reloff = bfd_h_get_32 (abfd, raw.reloff);
3501 section->nreloc = bfd_h_get_32 (abfd, raw.nreloc);
3502 section->flags = bfd_h_get_32 (abfd, raw.flags);
3503 section->reserved1 = bfd_h_get_32 (abfd, raw.reserved1);
3504 section->reserved2 = bfd_h_get_32 (abfd, raw.reserved2);
1e8a024a 3505 section->reserved3 = 0;
1e8a024a 3506
f1bde64c 3507 bfd_mach_o_init_section_from_mach_o (abfd, sec, prot);
1e8a024a 3508
f1bde64c 3509 return sec;
1e8a024a
TG		 3510}
3511
f1bde64c 3512static asection *
47daa70f 3513bfd_mach_o_read_section_64 (bfd *abfd, unsigned long prot)
1e8a024a 3514{
46d1c23b 3515 struct mach_o_section_64_external raw;
f1bde64c
TG		 3516 asection *sec;
3517 bfd_mach_o_section *section;
1e8a024a 3518
47daa70f
TG		 3519 if (bfd_bread (&raw, BFD_MACH_O_SECTION_64_SIZE, abfd)
3520 != BFD_MACH_O_SECTION_64_SIZE)
f1bde64c
TG		 3521 return NULL;
3522
5a5cbf72 3523 sec = bfd_mach_o_make_bfd_section (abfd, raw.segname, raw.sectname);
f1bde64c
TG		 3524 if (sec == NULL)
3525 return NULL;
1e8a024a 3526
f1bde64c
TG		 3527 section = bfd_mach_o_get_mach_o_section (sec);
3528 memcpy (section->segname, raw.segname, sizeof (raw.segname));
3529 section->segname[BFD_MACH_O_SEGNAME_SIZE] = 0;
3530 memcpy (section->sectname, raw.sectname, sizeof (raw.sectname));
69499dca 3531 section->sectname[BFD_MACH_O_SECTNAME_SIZE] = 0;
46d1c23b
TG		 3532 section->addr = bfd_h_get_64 (abfd, raw.addr);
3533 section->size = bfd_h_get_64 (abfd, raw.size);
3534 section->offset = bfd_h_get_32 (abfd, raw.offset);
3535 section->align = bfd_h_get_32 (abfd, raw.align);
c86934ce
NC		 3536 if (section->align > 64)
3537 {
4eca0228
AM		 3538 _bfd_error_handler
3539 (_("bfd_mach_o_read_section_64: overlarge alignment value: 0x%x, "
3540 "using 32 instead"), section->align);
c86934ce
NC		 3541 section->align = 32;
3542 }
46d1c23b
TG		 3543 section->reloff = bfd_h_get_32 (abfd, raw.reloff);
3544 section->nreloc = bfd_h_get_32 (abfd, raw.nreloc);
3545 section->flags = bfd_h_get_32 (abfd, raw.flags);
3546 section->reserved1 = bfd_h_get_32 (abfd, raw.reserved1);
3547 section->reserved2 = bfd_h_get_32 (abfd, raw.reserved2);
3548 section->reserved3 = bfd_h_get_32 (abfd, raw.reserved3);
3af9a47b 3549
f1bde64c 3550 bfd_mach_o_init_section_from_mach_o (abfd, sec, prot);
3af9a47b 3551
f1bde64c 3552 return sec;
3af9a47b
NC		 3553}
3554
f1bde64c 3555static asection *
47daa70f 3556bfd_mach_o_read_section (bfd *abfd, unsigned long prot, unsigned int wide)
1e8a024a
TG		 3557{
3558 if (wide)
47daa70f 3559 return bfd_mach_o_read_section_64 (abfd, prot);
1e8a024a 3560 else
47daa70f 3561 return bfd_mach_o_read_section_32 (abfd, prot);
1e8a024a
TG		 3562}
3563
afbb9e17 3564static bfd_boolean
ab273af8
TG		 3565bfd_mach_o_read_symtab_symbol (bfd *abfd,
3566 bfd_mach_o_symtab_command *sym,
3567 bfd_mach_o_asymbol *s,
3568 unsigned long i)
3af9a47b 3569{
046b007d 3570 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
c2f09c75 3571 unsigned int wide = mach_o_wide_p (&mdata->header);
046b007d
TG		 3572 unsigned int symwidth =
3573 wide ? BFD_MACH_O_NLIST_64_SIZE : BFD_MACH_O_NLIST_SIZE;
92bc0e80 3574 unsigned int symoff = sym->symoff + (i * symwidth);
46d1c23b 3575 struct mach_o_nlist_64_external raw;
3af9a47b
NC		 3576 unsigned char type = -1;
3577 unsigned char section = -1;
3578 short desc = -1;
1e8a024a 3579 symvalue value = -1;
3af9a47b
NC		 3580 unsigned long stroff = -1;
3581 unsigned int symtype = -1;
3582
3583 BFD_ASSERT (sym->strtab != NULL);
3584
c2f09c75 3585 if (bfd_seek (abfd, symoff, SEEK_SET) != 0
46d1c23b 3586 || bfd_bread (&raw, symwidth, abfd) != symwidth)
3af9a47b 3587 {
4eca0228 3588 _bfd_error_handler
46d1c23b
TG		 3589 (_("bfd_mach_o_read_symtab_symbol: unable to read %d bytes at %lu"),
3590 symwidth, (unsigned long) symoff);
afbb9e17 3591 return FALSE;
3af9a47b
NC		 3592 }
3593
46d1c23b
TG		 3594 stroff = bfd_h_get_32 (abfd, raw.n_strx);
3595 type = bfd_h_get_8 (abfd, raw.n_type);
c2f09c75 3596 symtype = type & BFD_MACH_O_N_TYPE;
46d1c23b
TG		 3597 section = bfd_h_get_8 (abfd, raw.n_sect);
3598 desc = bfd_h_get_16 (abfd, raw.n_desc);
1e8a024a 3599 if (wide)
46d1c23b 3600 value = bfd_h_get_64 (abfd, raw.n_value);
1e8a024a 3601 else
46d1c23b 3602 value = bfd_h_get_32 (abfd, raw.n_value);
3af9a47b
NC		 3603
3604 if (stroff >= sym->strsize)
3605 {
4eca0228 3606 _bfd_error_handler
46d1c23b
TG		 3607 (_("bfd_mach_o_read_symtab_symbol: name out of range (%lu >= %lu)"),
3608 (unsigned long) stroff,
3609 (unsigned long) sym->strsize);
afbb9e17 3610 return FALSE;
3af9a47b
NC		 3611 }
3612
92bc0e80
TG		 3613 s->symbol.the_bfd = abfd;
3614 s->symbol.name = sym->strtab + stroff;
3615 s->symbol.value = value;
3616 s->symbol.flags = 0x0;
b22161d6 3617 s->symbol.udata.i = i;
92bc0e80
TG		 3618 s->n_type = type;
3619 s->n_sect = section;
3620 s->n_desc = desc;
3af9a47b
NC		 3621
3622 if (type & BFD_MACH_O_N_STAB)
3623 {
92bc0e80
TG		 3624 s->symbol.flags |= BSF_DEBUGGING;
3625 s->symbol.section = bfd_und_section_ptr;
15e1c58a
TG		 3626 switch (type)
3627 {
3628 case N_FUN:
3629 case N_STSYM:
3630 case N_LCSYM:
3631 case N_BNSYM:
3632 case N_SLINE:
3633 case N_ENSYM:
3634 case N_ECOMM:
3635 case N_ECOML:
3636 case N_GSYM:
3637 if ((section > 0) && (section <= mdata->nsects))
3638 {
92bc0e80
TG		 3639 s->symbol.section = mdata->sections[section - 1]->bfdsection;
3640 s->symbol.value =
3641 s->symbol.value - mdata->sections[section - 1]->addr;
15e1c58a
TG		 3642 }
3643 break;
3644 }
3af9a47b
NC		 3645 }
3646 else
3647 {
b22161d6 3648 if (type & (BFD_MACH_O_N_PEXT | BFD_MACH_O_N_EXT))
92bc0e80 3649 s->symbol.flags |= BSF_GLOBAL;
b22161d6 3650 else
92bc0e80 3651 s->symbol.flags |= BSF_LOCAL;
3af9a47b
NC		 3652
3653 switch (symtype)
3654 {
3655 case BFD_MACH_O_N_UNDF:
c2f09c75 3656 if (type == (BFD_MACH_O_N_UNDF | BFD_MACH_O_N_EXT)
92bc0e80 3657 && s->symbol.value != 0)
c2f09c75
TG		 3658 {
3659 /* A common symbol. */
92bc0e80
TG		 3660 s->symbol.section = bfd_com_section_ptr;
3661 s->symbol.flags = BSF_NO_FLAGS;
c2f09c75
TG		 3662 }
3663 else
92bc0e80
TG		 3664 {
3665 s->symbol.section = bfd_und_section_ptr;
3666 if (s->n_desc & BFD_MACH_O_N_WEAK_REF)
3667 s->symbol.flags |= BSF_WEAK;
3668 }
3af9a47b
NC		 3669 break;
3670 case BFD_MACH_O_N_PBUD:
92bc0e80 3671 s->symbol.section = bfd_und_section_ptr;
3af9a47b
NC		 3672 break;
3673 case BFD_MACH_O_N_ABS:
92bc0e80 3674 s->symbol.section = bfd_abs_section_ptr;
3af9a47b
NC		 3675 break;
3676 case BFD_MACH_O_N_SECT:
3677 if ((section > 0) && (section <= mdata->nsects))
3678 {
92bc0e80
TG		 3679 s->symbol.section = mdata->sections[section - 1]->bfdsection;
3680 s->symbol.value =
3681 s->symbol.value - mdata->sections[section - 1]->addr;
3af9a47b
NC		 3682 }
3683 else
3684 {
3685 /* Mach-O uses 0 to mean "no section"; not an error. */
3686 if (section != 0)
3687 {
4eca0228
AM		 3688 _bfd_error_handler
3689 (_("bfd_mach_o_read_symtab_symbol: "
3690 "symbol \"%s\" specified invalid section %d (max %lu): "
3691 "setting to undefined"),
3692 s->symbol.name, section, mdata->nsects);
3af9a47b 3693 }
92bc0e80 3694 s->symbol.section = bfd_und_section_ptr;
3af9a47b
NC		 3695 }
3696 break;
3697 case BFD_MACH_O_N_INDR:
0596a831
TG		 3698 /* FIXME: we don't follow the BFD convention as this indirect symbol
3699 won't be followed by the referenced one. This looks harmless
3700 unless we start using the linker. */
3701 s->symbol.flags |= BSF_INDIRECT;
3702 s->symbol.section = bfd_ind_section_ptr;
3703 s->symbol.value = 0;
3af9a47b
NC		 3704 break;
3705 default:
4eca0228
AM		 3706 _bfd_error_handler
3707 (_("bfd_mach_o_read_symtab_symbol: "
3708 "symbol \"%s\" specified invalid type field 0x%x: "
3709 "setting to undefined"), s->symbol.name, symtype);
92bc0e80 3710 s->symbol.section = bfd_und_section_ptr;
3af9a47b
NC		 3711 break;
3712 }
3713 }
3714
afbb9e17 3715 return TRUE;
3af9a47b
NC		 3716}
3717
c5012cd8 3718bfd_boolean
ab273af8 3719bfd_mach_o_read_symtab_strtab (bfd *abfd)
3af9a47b 3720{
046b007d
TG		 3721 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
3722 bfd_mach_o_symtab_command *sym = mdata->symtab;
3723
3724 /* Fail if there is no symtab. */
3725 if (sym == NULL)
afbb9e17 3726 return FALSE;
046b007d
TG		 3727
3728 /* Success if already loaded. */
3729 if (sym->strtab)
afbb9e17 3730 return TRUE;
3af9a47b
NC		 3731
3732 if (abfd->flags & BFD_IN_MEMORY)
3733 {
3734 struct bfd_in_memory *b;
3735
3736 b = (struct bfd_in_memory *) abfd->iostream;
3737
3738 if ((sym->stroff + sym->strsize) > b->size)
3739 {
3740 bfd_set_error (bfd_error_file_truncated);
afbb9e17 3741 return FALSE;
3af9a47b 3742 }
f075ee0c 3743 sym->strtab = (char *) b->buffer + sym->stroff;
3af9a47b 3744 }
046b007d 3745 else
3af9a47b 3746 {
e7287c7f 3747 sym->strtab = bfd_alloc (abfd, sym->strsize + 1);
046b007d 3748 if (sym->strtab == NULL)
afbb9e17 3749 return FALSE;
046b007d
TG		 3750
3751 if (bfd_seek (abfd, sym->stroff, SEEK_SET) != 0
afbb9e17 3752 || bfd_bread (sym->strtab, sym->strsize, abfd) != sym->strsize)
046b007d 3753 {
a1165289
NC		 3754 /* PR 17512: file: 10888-1609-0.004. */
3755 bfd_release (abfd, sym->strtab);
3756 sym->strtab = NULL;
046b007d 3757 bfd_set_error (bfd_error_file_truncated);
afbb9e17 3758 return FALSE;
046b007d 3759 }
e7287c7f
NC		 3760 /* Zero terminate the string table. */
3761 sym->strtab[sym->strsize] = 0;
3af9a47b
NC		 3762 }
3763
afbb9e17 3764 return TRUE;
3af9a47b
NC		 3765}
3766
c5012cd8 3767bfd_boolean
ab273af8 3768bfd_mach_o_read_symtab_symbols (bfd *abfd)
3af9a47b 3769{
046b007d
TG		 3770 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
3771 bfd_mach_o_symtab_command *sym = mdata->symtab;
3af9a47b 3772 unsigned long i;
3af9a47b 3773
092d27ff 3774 if (sym == NULL || sym->symbols)
0a9d414a
NC		 3775 /* Return now if there are no symbols or if already loaded. */
3776 return TRUE;
046b007d 3777
64d29018 3778 sym->symbols = bfd_alloc2 (abfd, sym->nsyms, sizeof (bfd_mach_o_asymbol));
3af9a47b
NC		 3779 if (sym->symbols == NULL)
3780 {
4eca0228
AM		 3781 _bfd_error_handler (_("bfd_mach_o_read_symtab_symbols: "
3782 "unable to allocate memory for symbols"));
64d29018 3783 sym->nsyms = 0;
afbb9e17 3784 return FALSE;
3af9a47b 3785 }
a95a4550 3786
afbb9e17 3787 if (!bfd_mach_o_read_symtab_strtab (abfd))
64d29018 3788 goto fail;
3af9a47b
NC		 3789
3790 for (i = 0; i < sym->nsyms; i++)
64d29018
NC		 3791 if (!bfd_mach_o_read_symtab_symbol (abfd, sym, &sym->symbols[i], i))
3792 goto fail;
a95a4550 3793
afbb9e17 3794 return TRUE;
64d29018
NC		 3795
3796 fail:
3797 bfd_release (abfd, sym->symbols);
3798 sym->symbols = NULL;
3799 sym->nsyms = 0;
3800 return FALSE;
3af9a47b
NC		 3801}
3802
3803static const char *
116c20d2 3804bfd_mach_o_i386_flavour_string (unsigned int flavour)
3af9a47b
NC		 3805{
3806 switch ((int) flavour)
3807 {
15e1c58a
TG		 3808 case BFD_MACH_O_x86_THREAD_STATE32: return "x86_THREAD_STATE32";
3809 case BFD_MACH_O_x86_FLOAT_STATE32: return "x86_FLOAT_STATE32";
3810 case BFD_MACH_O_x86_EXCEPTION_STATE32: return "x86_EXCEPTION_STATE32";
3811 case BFD_MACH_O_x86_THREAD_STATE64: return "x86_THREAD_STATE64";
3812 case BFD_MACH_O_x86_FLOAT_STATE64: return "x86_FLOAT_STATE64";
3813 case BFD_MACH_O_x86_EXCEPTION_STATE64: return "x86_EXCEPTION_STATE64";
3814 case BFD_MACH_O_x86_THREAD_STATE: return "x86_THREAD_STATE";
3815 case BFD_MACH_O_x86_FLOAT_STATE: return "x86_FLOAT_STATE";
3816 case BFD_MACH_O_x86_EXCEPTION_STATE: return "x86_EXCEPTION_STATE";
3817 case BFD_MACH_O_x86_DEBUG_STATE32: return "x86_DEBUG_STATE32";
3818 case BFD_MACH_O_x86_DEBUG_STATE64: return "x86_DEBUG_STATE64";
3819 case BFD_MACH_O_x86_DEBUG_STATE: return "x86_DEBUG_STATE";
b32e07d7 3820 case BFD_MACH_O_x86_THREAD_STATE_NONE: return "x86_THREAD_STATE_NONE";
3af9a47b
NC		 3821 default: return "UNKNOWN";
3822 }
3823}
3824
3825static const char *
116c20d2 3826bfd_mach_o_ppc_flavour_string (unsigned int flavour)
3af9a47b
NC		 3827{
3828 switch ((int) flavour)
3829 {
b32e07d7
TG		 3830 case BFD_MACH_O_PPC_THREAD_STATE: return "PPC_THREAD_STATE";
3831 case BFD_MACH_O_PPC_FLOAT_STATE: return "PPC_FLOAT_STATE";
3832 case BFD_MACH_O_PPC_EXCEPTION_STATE: return "PPC_EXCEPTION_STATE";
3833 case BFD_MACH_O_PPC_VECTOR_STATE: return "PPC_VECTOR_STATE";
3834 case BFD_MACH_O_PPC_THREAD_STATE64: return "PPC_THREAD_STATE64";
3835 case BFD_MACH_O_PPC_EXCEPTION_STATE64: return "PPC_EXCEPTION_STATE64";
3af9a47b
NC		 3836 default: return "UNKNOWN";
3837 }
3838}
3839
452216ab 3840static bfd_boolean
ab273af8 3841bfd_mach_o_read_dylinker (bfd *abfd, bfd_mach_o_load_command *command)
3af9a47b
NC		 3842{
3843 bfd_mach_o_dylinker_command *cmd = &command->command.dylinker;
46d1c23b 3844 struct mach_o_str_command_external raw;
3af9a47b 3845 unsigned int nameoff;
4525c51a 3846 unsigned int namelen;
3af9a47b 3847
47daa70f 3848 if (bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
452216ab 3849 return FALSE;
3af9a47b 3850
46d1c23b 3851 nameoff = bfd_h_get_32 (abfd, raw.str);
3af9a47b 3852
4525c51a
TG		 3853 cmd->name_offset = nameoff;
3854 namelen = command->len - nameoff;
3855 nameoff += command->offset;
3856 cmd->name_str = bfd_alloc (abfd, namelen);
b32e07d7 3857 if (cmd->name_str == NULL)
452216ab 3858 return FALSE;
4525c51a
TG		 3859 if (bfd_seek (abfd, nameoff, SEEK_SET) != 0
3860 || bfd_bread (cmd->name_str, namelen, abfd) != namelen)
452216ab
TG		 3861 return FALSE;
3862 return TRUE;
3af9a47b
NC		 3863}
3864
452216ab 3865static bfd_boolean
ab273af8 3866bfd_mach_o_read_dylib (bfd *abfd, bfd_mach_o_load_command *command)
3af9a47b 3867{
47daa70f 3868 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
3af9a47b 3869 bfd_mach_o_dylib_command *cmd = &command->command.dylib;
46d1c23b 3870 struct mach_o_dylib_command_external raw;
3af9a47b 3871 unsigned int nameoff;
4525c51a 3872 unsigned int namelen;
3af9a47b 3873
046b007d
TG		 3874 switch (command->type)
3875 {
3876 case BFD_MACH_O_LC_LOAD_DYLIB:
fbe383b9 3877 case BFD_MACH_O_LC_LAZY_LOAD_DYLIB:
046b007d 3878 case BFD_MACH_O_LC_LOAD_WEAK_DYLIB:
046b007d 3879 case BFD_MACH_O_LC_ID_DYLIB:
046b007d 3880 case BFD_MACH_O_LC_REEXPORT_DYLIB:
73017762 3881 case BFD_MACH_O_LC_LOAD_UPWARD_DYLIB:
046b007d
TG		 3882 break;
3883 default:
b32e07d7 3884 BFD_FAIL ();
452216ab 3885 return FALSE;
046b007d 3886 }
3af9a47b 3887
47daa70f 3888 if (bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
452216ab 3889 return FALSE;
3af9a47b 3890
46d1c23b
TG		 3891 nameoff = bfd_h_get_32 (abfd, raw.name);
3892 cmd->timestamp = bfd_h_get_32 (abfd, raw.timestamp);
3893 cmd->current_version = bfd_h_get_32 (abfd, raw.current_version);
3894 cmd->compatibility_version = bfd_h_get_32 (abfd, raw.compatibility_version);
3af9a47b
NC		 3895
3896 cmd->name_offset = command->offset + nameoff;
4525c51a
TG		 3897 namelen = command->len - nameoff;
3898 cmd->name_str = bfd_alloc (abfd, namelen);
b32e07d7 3899 if (cmd->name_str == NULL)
452216ab 3900 return FALSE;
47daa70f 3901 if (bfd_seek (abfd, mdata->hdr_offset + cmd->name_offset, SEEK_SET) != 0
4525c51a 3902 || bfd_bread (cmd->name_str, namelen, abfd) != namelen)
452216ab
TG		 3903 return FALSE;
3904 return TRUE;
3af9a47b
NC		 3905}
3906
452216ab 3907static bfd_boolean
7a79c514
TG		 3908bfd_mach_o_read_prebound_dylib (bfd *abfd,
3909 bfd_mach_o_load_command *command)
3af9a47b 3910{
7a79c514
TG		 3911 bfd_mach_o_prebound_dylib_command *cmd = &command->command.prebound_dylib;
3912 struct mach_o_prebound_dylib_command_external raw;
3913 unsigned int nameoff;
3914 unsigned int modoff;
3915 unsigned int str_len;
3916 unsigned char *str;
3917
47daa70f 3918 if (bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
452216ab 3919 return FALSE;
7a79c514
TG		 3920
3921 nameoff = bfd_h_get_32 (abfd, raw.name);
3922 modoff = bfd_h_get_32 (abfd, raw.linked_modules);
3923 if (nameoff > command->len || modoff > command->len)
452216ab 3924 return FALSE;
7a79c514
TG		 3925
3926 str_len = command->len - sizeof (raw);
3927 str = bfd_alloc (abfd, str_len);
3928 if (str == NULL)
452216ab 3929 return FALSE;
7a79c514 3930 if (bfd_bread (str, str_len, abfd) != str_len)
452216ab 3931 return FALSE;
7a79c514
TG		 3932
3933 cmd->name_offset = command->offset + nameoff;
3934 cmd->nmodules = bfd_h_get_32 (abfd, raw.nmodules);
3935 cmd->linked_modules_offset = command->offset + modoff;
3936
3937 cmd->name_str = (char *)str + nameoff - (sizeof (raw) + BFD_MACH_O_LC_SIZE);
3938 cmd->linked_modules = str + modoff - (sizeof (raw) + BFD_MACH_O_LC_SIZE);
452216ab 3939 return TRUE;
7a79c514
TG		 3940}
3941
452216ab 3942static bfd_boolean
7a79c514
TG		 3943bfd_mach_o_read_prebind_cksum (bfd *abfd,
3944 bfd_mach_o_load_command *command)
3945{
3946 bfd_mach_o_prebind_cksum_command *cmd = &command->command.prebind_cksum;
3947 struct mach_o_prebind_cksum_command_external raw;
3af9a47b 3948
47daa70f 3949 if (bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
452216ab 3950 return FALSE;
7a79c514
TG		 3951
3952 cmd->cksum = bfd_get_32 (abfd, raw.cksum);
452216ab 3953 return TRUE;
7a79c514
TG		 3954}
3955
452216ab 3956static bfd_boolean
7a79c514
TG		 3957bfd_mach_o_read_twolevel_hints (bfd *abfd,
3958 bfd_mach_o_load_command *command)
3959{
3960 bfd_mach_o_twolevel_hints_command *cmd = &command->command.twolevel_hints;
3961 struct mach_o_twolevel_hints_command_external raw;
3962
47daa70f 3963 if (bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
452216ab 3964 return FALSE;
7a79c514
TG		 3965
3966 cmd->offset = bfd_get_32 (abfd, raw.offset);
3967 cmd->nhints = bfd_get_32 (abfd, raw.nhints);
452216ab 3968 return TRUE;
3af9a47b
NC		 3969}
3970
452216ab 3971static bfd_boolean
9f4a5bd1
TG		 3972bfd_mach_o_read_fvmlib (bfd *abfd, bfd_mach_o_load_command *command)
3973{
3974 bfd_mach_o_fvmlib_command *fvm = &command->command.fvmlib;
3975 struct mach_o_fvmlib_command_external raw;
3976 unsigned int nameoff;
4525c51a 3977 unsigned int namelen;
9f4a5bd1 3978
47daa70f 3979 if (bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
452216ab 3980 return FALSE;
9f4a5bd1
TG		 3981
3982 nameoff = bfd_h_get_32 (abfd, raw.name);
3983 fvm->minor_version = bfd_h_get_32 (abfd, raw.minor_version);
3984 fvm->header_addr = bfd_h_get_32 (abfd, raw.header_addr);
3985
3986 fvm->name_offset = command->offset + nameoff;
4525c51a
TG		 3987 namelen = command->len - nameoff;
3988 fvm->name_str = bfd_alloc (abfd, namelen);
9f4a5bd1 3989 if (fvm->name_str == NULL)
452216ab 3990 return FALSE;
9f4a5bd1 3991 if (bfd_seek (abfd, fvm->name_offset, SEEK_SET) != 0
4525c51a 3992 || bfd_bread (fvm->name_str, namelen, abfd) != namelen)
452216ab
TG		 3993 return FALSE;
3994 return TRUE;
9f4a5bd1
TG		 3995}
3996
452216ab 3997static bfd_boolean
ab273af8 3998bfd_mach_o_read_thread (bfd *abfd, bfd_mach_o_load_command *command)
3af9a47b 3999{
b32e07d7 4000 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
3af9a47b 4001 bfd_mach_o_thread_command *cmd = &command->command.thread;
92bc0e80 4002 unsigned int offset;
3af9a47b
NC		 4003 unsigned int nflavours;
4004 unsigned int i;
4005
4006 BFD_ASSERT ((command->type == BFD_MACH_O_LC_THREAD)
4007 || (command->type == BFD_MACH_O_LC_UNIXTHREAD));
4008
b32e07d7 4009 /* Count the number of threads. */
3af9a47b
NC		 4010 offset = 8;
4011 nflavours = 0;
4012 while (offset != command->len)
4013 {
46d1c23b
TG		 4014 struct mach_o_thread_command_external raw;
4015
3af9a47b 4016 if (offset >= command->len)
452216ab 4017 return FALSE;
3af9a47b 4018
c2f09c75 4019 if (bfd_seek (abfd, command->offset + offset, SEEK_SET) != 0
46d1c23b 4020 || bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
452216ab 4021 return FALSE;
3af9a47b 4022
46d1c23b 4023 offset += sizeof (raw) + bfd_h_get_32 (abfd, raw.count) * 4;
3af9a47b
NC		 4024 nflavours++;
4025 }
4026
b32e07d7 4027 /* Allocate threads. */
64d29018
NC		 4028 cmd->flavours = bfd_alloc2
4029 (abfd, nflavours, sizeof (bfd_mach_o_thread_flavour));
3af9a47b 4030 if (cmd->flavours == NULL)
452216ab 4031 return FALSE;
3af9a47b
NC		 4032 cmd->nflavours = nflavours;
4033
4034 offset = 8;
4035 nflavours = 0;
4036 while (offset != command->len)
4037 {
46d1c23b
TG		 4038 struct mach_o_thread_command_external raw;
4039
3af9a47b 4040 if (offset >= command->len)
452216ab 4041 return FALSE;
3af9a47b
NC		 4042
4043 if (nflavours >= cmd->nflavours)
452216ab 4044 return FALSE;
3af9a47b 4045
c2f09c75 4046 if (bfd_seek (abfd, command->offset + offset, SEEK_SET) != 0
46d1c23b 4047 || bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
452216ab 4048 return FALSE;
3af9a47b 4049
46d1c23b
TG		 4050 cmd->flavours[nflavours].flavour = bfd_h_get_32 (abfd, raw.flavour);
4051 cmd->flavours[nflavours].offset = command->offset + offset + sizeof (raw);
4052 cmd->flavours[nflavours].size = bfd_h_get_32 (abfd, raw.count) * 4;
4053 offset += cmd->flavours[nflavours].size + sizeof (raw);
3af9a47b
NC		 4054 nflavours++;
4055 }
4056
4057 for (i = 0; i < nflavours; i++)
4058 {
4059 asection *bfdsec;
4060 unsigned int snamelen;
4061 char *sname;
4062 const char *flavourstr;
4063 const char *prefix = "LC_THREAD";
a95a4550
AM		 4064 unsigned int j = 0;
4065
3af9a47b
NC		 4066 switch (mdata->header.cputype)
4067 {
4068 case BFD_MACH_O_CPU_TYPE_POWERPC:
1e8a024a 4069 case BFD_MACH_O_CPU_TYPE_POWERPC_64:
707e555b
TG		 4070 flavourstr =
4071 bfd_mach_o_ppc_flavour_string (cmd->flavours[i].flavour);
3af9a47b
NC		 4072 break;
4073 case BFD_MACH_O_CPU_TYPE_I386:
1e8a024a 4074 case BFD_MACH_O_CPU_TYPE_X86_64:
707e555b
TG		 4075 flavourstr =
4076 bfd_mach_o_i386_flavour_string (cmd->flavours[i].flavour);
3af9a47b
NC		 4077 break;
4078 default:
4079 flavourstr = "UNKNOWN_ARCHITECTURE";
4080 break;
4081 }
a95a4550 4082
3af9a47b 4083 snamelen = strlen (prefix) + 1 + 20 + 1 + strlen (flavourstr) + 1;
116c20d2 4084 sname = bfd_alloc (abfd, snamelen);
3af9a47b 4085 if (sname == NULL)
452216ab 4086 return FALSE;
3af9a47b
NC		 4087
4088 for (;;)
4089 {
a95a4550
AM		 4090 sprintf (sname, "%s.%s.%u", prefix, flavourstr, j);
4091 if (bfd_get_section_by_name (abfd, sname) == NULL)
3af9a47b 4092 break;
a95a4550 4093 j++;
3af9a47b
NC		 4094 }
4095
117ed4f8 4096 bfdsec = bfd_make_section_with_flags (abfd, sname, SEC_HAS_CONTENTS);
a95a4550 4097
3af9a47b
NC		 4098 bfdsec->vma = 0;
4099 bfdsec->lma = 0;
eea6121a 4100 bfdsec->size = cmd->flavours[i].size;
3af9a47b
NC		 4101 bfdsec->filepos = cmd->flavours[i].offset;
4102 bfdsec->alignment_power = 0x0;
3af9a47b
NC		 4103
4104 cmd->section = bfdsec;
4105 }
4106
452216ab 4107 return TRUE;
3af9a47b
NC		 4108}
4109
452216ab 4110static bfd_boolean
ab273af8 4111bfd_mach_o_read_dysymtab (bfd *abfd, bfd_mach_o_load_command *command)
3af9a47b 4112{
046b007d 4113 bfd_mach_o_dysymtab_command *cmd = &command->command.dysymtab;
b32e07d7 4114 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
3af9a47b
NC		 4115
4116 BFD_ASSERT (command->type == BFD_MACH_O_LC_DYSYMTAB);
4117
46d1c23b
TG		 4118 {
4119 struct mach_o_dysymtab_command_external raw;
4120
47daa70f 4121 if (bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
452216ab 4122 return FALSE;
3af9a47b 4123
46d1c23b
TG		 4124 cmd->ilocalsym = bfd_h_get_32 (abfd, raw.ilocalsym);
4125 cmd->nlocalsym = bfd_h_get_32 (abfd, raw.nlocalsym);
4126 cmd->iextdefsym = bfd_h_get_32 (abfd, raw.iextdefsym);
4127 cmd->nextdefsym = bfd_h_get_32 (abfd, raw.nextdefsym);
4128 cmd->iundefsym = bfd_h_get_32 (abfd, raw.iundefsym);
4129 cmd->nundefsym = bfd_h_get_32 (abfd, raw.nundefsym);
4130 cmd->tocoff = bfd_h_get_32 (abfd, raw.tocoff);
4131 cmd->ntoc = bfd_h_get_32 (abfd, raw.ntoc);
4132 cmd->modtaboff = bfd_h_get_32 (abfd, raw.modtaboff);
4133 cmd->nmodtab = bfd_h_get_32 (abfd, raw.nmodtab);
4134 cmd->extrefsymoff = bfd_h_get_32 (abfd, raw.extrefsymoff);
4135 cmd->nextrefsyms = bfd_h_get_32 (abfd, raw.nextrefsyms);
4136 cmd->indirectsymoff = bfd_h_get_32 (abfd, raw.indirectsymoff);
4137 cmd->nindirectsyms = bfd_h_get_32 (abfd, raw.nindirectsyms);
4138 cmd->extreloff = bfd_h_get_32 (abfd, raw.extreloff);
4139 cmd->nextrel = bfd_h_get_32 (abfd, raw.nextrel);
4140 cmd->locreloff = bfd_h_get_32 (abfd, raw.locreloff);
4141 cmd->nlocrel = bfd_h_get_32 (abfd, raw.nlocrel);
4142 }
046b007d
TG		 4143
4144 if (cmd->nmodtab != 0)
4145 {
046b007d
TG		 4146 unsigned int i;
4147 int wide = bfd_mach_o_wide_p (abfd);
4148 unsigned int module_len = wide ? 56 : 52;
4149
4150 cmd->dylib_module =
64d29018 4151 bfd_alloc2 (abfd, cmd->nmodtab, sizeof (bfd_mach_o_dylib_module));
046b007d 4152 if (cmd->dylib_module == NULL)
452216ab 4153 return FALSE;
046b007d
TG		 4154
4155 if (bfd_seek (abfd, cmd->modtaboff, SEEK_SET) != 0)
452216ab 4156 return FALSE;
046b007d
TG		 4157
4158 for (i = 0; i < cmd->nmodtab; i++)
4159 {
4160 bfd_mach_o_dylib_module *module = &cmd->dylib_module[i];
4161 unsigned long v;
46d1c23b 4162 unsigned char buf[56];
046b007d 4163
91d6fa6a 4164 if (bfd_bread ((void *) buf, module_len, abfd) != module_len)
452216ab 4165 return FALSE;
046b007d
TG		 4166
4167 module->module_name_idx = bfd_h_get_32 (abfd, buf + 0);
4168 module->iextdefsym = bfd_h_get_32 (abfd, buf + 4);
4169 module->nextdefsym = bfd_h_get_32 (abfd, buf + 8);
4170 module->irefsym = bfd_h_get_32 (abfd, buf + 12);
4171 module->nrefsym = bfd_h_get_32 (abfd, buf + 16);
4172 module->ilocalsym = bfd_h_get_32 (abfd, buf + 20);
4173 module->nlocalsym = bfd_h_get_32 (abfd, buf + 24);
4174 module->iextrel = bfd_h_get_32 (abfd, buf + 28);
4175 module->nextrel = bfd_h_get_32 (abfd, buf + 32);
4176 v = bfd_h_get_32 (abfd, buf +36);
4177 module->iinit = v & 0xffff;
4178 module->iterm = (v >> 16) & 0xffff;
4179 v = bfd_h_get_32 (abfd, buf + 40);
4180 module->ninit = v & 0xffff;
4181 module->nterm = (v >> 16) & 0xffff;
4182 if (wide)
4183 {
4184 module->objc_module_info_size = bfd_h_get_32 (abfd, buf + 44);
4185 module->objc_module_info_addr = bfd_h_get_64 (abfd, buf + 48);
4186 }
4187 else
4188 {
4189 module->objc_module_info_addr = bfd_h_get_32 (abfd, buf + 44);
4190 module->objc_module_info_size = bfd_h_get_32 (abfd, buf + 48);
4191 }
4192 }
4193 }
afbb9e17 4194
046b007d
TG		 4195 if (cmd->ntoc != 0)
4196 {
64d29018 4197 unsigned long i;
046b007d 4198
64d29018
NC		 4199 cmd->dylib_toc = bfd_alloc2
4200 (abfd, cmd->ntoc, sizeof (bfd_mach_o_dylib_table_of_content));
046b007d 4201 if (cmd->dylib_toc == NULL)
452216ab 4202 return FALSE;
046b007d
TG		 4203
4204 if (bfd_seek (abfd, cmd->tocoff, SEEK_SET) != 0)
452216ab 4205 return FALSE;
046b007d
TG		 4206
4207 for (i = 0; i < cmd->ntoc; i++)
4208 {
46d1c23b 4209 struct mach_o_dylib_table_of_contents_external raw;
046b007d
TG		 4210 bfd_mach_o_dylib_table_of_content *toc = &cmd->dylib_toc[i];
4211
46d1c23b 4212 if (bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
452216ab 4213 return FALSE;
046b007d 4214
46d1c23b
TG		 4215 toc->symbol_index = bfd_h_get_32 (abfd, raw.symbol_index);
4216 toc->module_index = bfd_h_get_32 (abfd, raw.module_index);
046b007d
TG		 4217 }
4218 }
4219
4220 if (cmd->nindirectsyms != 0)
4221 {
046b007d
TG		 4222 unsigned int i;
4223
64d29018
NC		 4224 cmd->indirect_syms = bfd_alloc2
4225 (abfd, cmd->nindirectsyms, sizeof (unsigned int));
046b007d 4226 if (cmd->indirect_syms == NULL)
452216ab 4227 return FALSE;
046b007d
TG		 4228
4229 if (bfd_seek (abfd, cmd->indirectsymoff, SEEK_SET) != 0)
452216ab 4230 return FALSE;
046b007d
TG		 4231
4232 for (i = 0; i < cmd->nindirectsyms; i++)
4233 {
46d1c23b 4234 unsigned char raw[4];
046b007d
TG		 4235 unsigned int *is = &cmd->indirect_syms[i];
4236
46d1c23b 4237 if (bfd_bread (raw, sizeof (raw), abfd) != sizeof (raw))
452216ab 4238 return FALSE;
046b007d 4239
46d1c23b 4240 *is = bfd_h_get_32 (abfd, raw);
046b007d
TG		 4241 }
4242 }
4243
4244 if (cmd->nextrefsyms != 0)
4245 {
046b007d
TG		 4246 unsigned long v;
4247 unsigned int i;
4248
64d29018
NC		 4249 cmd->ext_refs = bfd_alloc2
4250 (abfd, cmd->nextrefsyms, sizeof (bfd_mach_o_dylib_reference));
046b007d 4251 if (cmd->ext_refs == NULL)
452216ab 4252 return FALSE;
046b007d
TG		 4253
4254 if (bfd_seek (abfd, cmd->extrefsymoff, SEEK_SET) != 0)
452216ab 4255 return FALSE;
046b007d
TG		 4256
4257 for (i = 0; i < cmd->nextrefsyms; i++)
4258 {
46d1c23b 4259 unsigned char raw[4];
046b007d
TG		 4260 bfd_mach_o_dylib_reference *ref = &cmd->ext_refs[i];
4261
46d1c23b 4262 if (bfd_bread (raw, sizeof (raw), abfd) != sizeof (raw))
452216ab 4263 return FALSE;
046b007d 4264
b32e07d7
TG		 4265 /* Fields isym and flags are written as bit-fields, thus we need
4266 a specific processing for endianness. */
46d1c23b 4267 v = bfd_h_get_32 (abfd, raw);
b32e07d7
TG		 4268 if (bfd_big_endian (abfd))
4269 {
4270 ref->isym = (v >> 8) & 0xffffff;
4271 ref->flags = v & 0xff;
4272 }
4273 else
4274 {
4275 ref->isym = v & 0xffffff;
4276 ref->flags = (v >> 24) & 0xff;
4277 }
046b007d
TG		 4278 }
4279 }
3af9a47b 4280
b32e07d7 4281 if (mdata->dysymtab)
452216ab 4282 return FALSE;
b32e07d7
TG		 4283 mdata->dysymtab = cmd;
4284
452216ab 4285 return TRUE;
3af9a47b
NC		 4286}
4287
452216ab 4288static bfd_boolean
ab273af8 4289bfd_mach_o_read_symtab (bfd *abfd, bfd_mach_o_load_command *command)
3af9a47b 4290{
046b007d
TG		 4291 bfd_mach_o_symtab_command *symtab = &command->command.symtab;
4292 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
46d1c23b 4293 struct mach_o_symtab_command_external raw;
3af9a47b
NC		 4294
4295 BFD_ASSERT (command->type == BFD_MACH_O_LC_SYMTAB);
4296
47daa70f 4297 if (bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
452216ab 4298 return FALSE;
a95a4550 4299
46d1c23b
TG		 4300 symtab->symoff = bfd_h_get_32 (abfd, raw.symoff);
4301 symtab->nsyms = bfd_h_get_32 (abfd, raw.nsyms);
4302 symtab->stroff = bfd_h_get_32 (abfd, raw.stroff);
4303 symtab->strsize = bfd_h_get_32 (abfd, raw.strsize);
046b007d
TG		 4304 symtab->symbols = NULL;
4305 symtab->strtab = NULL;
3af9a47b 4306
046b007d 4307 if (symtab->nsyms != 0)
15e1c58a
TG		 4308 abfd->flags |= HAS_SYMS;
4309
046b007d 4310 if (mdata->symtab)
452216ab 4311 return FALSE;
046b007d 4312 mdata->symtab = symtab;
452216ab 4313 return TRUE;
3af9a47b
NC		 4314}
4315
452216ab 4316static bfd_boolean
ab273af8 4317bfd_mach_o_read_uuid (bfd *abfd, bfd_mach_o_load_command *command)
15e1c58a
TG		 4318{
4319 bfd_mach_o_uuid_command *cmd = &command->command.uuid;
15e1c58a
TG		 4320
4321 BFD_ASSERT (command->type == BFD_MACH_O_LC_UUID);
4322
47daa70f 4323 if (bfd_bread (cmd->uuid, 16, abfd) != 16)
452216ab 4324 return FALSE;
15e1c58a 4325
452216ab 4326 return TRUE;
15e1c58a
TG		 4327}
4328
452216ab 4329static bfd_boolean
ab273af8 4330bfd_mach_o_read_linkedit (bfd *abfd, bfd_mach_o_load_command *command)
046b007d
TG		 4331{
4332 bfd_mach_o_linkedit_command *cmd = &command->command.linkedit;
46d1c23b 4333 struct mach_o_linkedit_data_command_external raw;
046b007d 4334
47daa70f 4335 if (bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
452216ab 4336 return FALSE;
046b007d 4337
46d1c23b
TG		 4338 cmd->dataoff = bfd_get_32 (abfd, raw.dataoff);
4339 cmd->datasize = bfd_get_32 (abfd, raw.datasize);
452216ab 4340 return TRUE;
046b007d
TG		 4341}
4342
452216ab 4343static bfd_boolean
ab273af8 4344bfd_mach_o_read_str (bfd *abfd, bfd_mach_o_load_command *command)
046b007d
TG		 4345{
4346 bfd_mach_o_str_command *cmd = &command->command.str;
46d1c23b 4347 struct mach_o_str_command_external raw;
046b007d
TG		 4348 unsigned long off;
4349
47daa70f 4350 if (bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
452216ab 4351 return FALSE;
046b007d 4352
46d1c23b 4353 off = bfd_get_32 (abfd, raw.str);
046b007d
TG		 4354 cmd->stroff = command->offset + off;
4355 cmd->str_len = command->len - off;
4356 cmd->str = bfd_alloc (abfd, cmd->str_len);
4357 if (cmd->str == NULL)
452216ab 4358 return FALSE;
046b007d 4359 if (bfd_seek (abfd, cmd->stroff, SEEK_SET) != 0
91d6fa6a 4360 || bfd_bread ((void *) cmd->str, cmd->str_len, abfd) != cmd->str_len)
452216ab
TG		 4361 return FALSE;
4362 return TRUE;
046b007d
TG		 4363}
4364
c9ffd2ea
TG		 4365static unsigned char *
4366bfd_mach_o_alloc_and_read (bfd *abfd, unsigned int off, unsigned int size)
4367{
4368 unsigned char *buf;
4369
4370 buf = bfd_alloc (abfd, size);
4371 if (buf == NULL)
4372 return NULL;
4373 if (bfd_seek (abfd, off, SEEK_SET) != 0
4374 || bfd_bread (buf, size, abfd) != size)
4375 return NULL;
4376 return buf;
4377}
4378
4379static bfd_boolean
4380bfd_mach_o_read_dyld_content (bfd *abfd, bfd_mach_o_dyld_info_command *cmd)
4381{
4382 /* Read rebase content. */
4383 if (cmd->rebase_content == NULL && cmd->rebase_size != 0)
4384 {
4385 cmd->rebase_content =
4386 bfd_mach_o_alloc_and_read (abfd, cmd->rebase_off, cmd->rebase_size);
4387 if (cmd->rebase_content == NULL)
4388 return FALSE;
4389 }
4390
4391 /* Read bind content. */
4392 if (cmd->bind_content == NULL && cmd->bind_size != 0)
4393 {
4394 cmd->bind_content =
4395 bfd_mach_o_alloc_and_read (abfd, cmd->bind_off, cmd->bind_size);
4396 if (cmd->bind_content == NULL)
4397 return FALSE;
4398 }
4399
4400 /* Read weak bind content. */
4401 if (cmd->weak_bind_content == NULL && cmd->weak_bind_size != 0)
4402 {
4403 cmd->weak_bind_content = bfd_mach_o_alloc_and_read
4404 (abfd, cmd->weak_bind_off, cmd->weak_bind_size);
4405 if (cmd->weak_bind_content == NULL)
4406 return FALSE;
4407 }
4408
4409 /* Read lazy bind content. */
4410 if (cmd->lazy_bind_content == NULL && cmd->lazy_bind_size != 0)
4411 {
4412 cmd->lazy_bind_content = bfd_mach_o_alloc_and_read
4413 (abfd, cmd->lazy_bind_off, cmd->lazy_bind_size);
4414 if (cmd->lazy_bind_content == NULL)
4415 return FALSE;
4416 }
4417
4418 /* Read export content. */
4419 if (cmd->export_content == NULL && cmd->export_size != 0)
4420 {
4421 cmd->export_content = bfd_mach_o_alloc_and_read
4422 (abfd, cmd->export_off, cmd->export_size);
4423 if (cmd->export_content == NULL)
4424 return FALSE;
4425 }
4426
4427 return TRUE;
4428}
4429
452216ab 4430static bfd_boolean
ab273af8 4431bfd_mach_o_read_dyld_info (bfd *abfd, bfd_mach_o_load_command *command)
ad86f1fb
TG		 4432{
4433 bfd_mach_o_dyld_info_command *cmd = &command->command.dyld_info;
46d1c23b 4434 struct mach_o_dyld_info_command_external raw;
ad86f1fb 4435
47daa70f 4436 if (bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
452216ab 4437 return FALSE;
ad86f1fb 4438
46d1c23b
TG		 4439 cmd->rebase_off = bfd_get_32 (abfd, raw.rebase_off);
4440 cmd->rebase_size = bfd_get_32 (abfd, raw.rebase_size);
c9ffd2ea 4441 cmd->rebase_content = NULL;
46d1c23b
TG		 4442 cmd->bind_off = bfd_get_32 (abfd, raw.bind_off);
4443 cmd->bind_size = bfd_get_32 (abfd, raw.bind_size);
c9ffd2ea 4444 cmd->bind_content = NULL;
46d1c23b
TG		 4445 cmd->weak_bind_off = bfd_get_32 (abfd, raw.weak_bind_off);
4446 cmd->weak_bind_size = bfd_get_32 (abfd, raw.weak_bind_size);
c9ffd2ea 4447 cmd->weak_bind_content = NULL;
46d1c23b
TG		 4448 cmd->lazy_bind_off = bfd_get_32 (abfd, raw.lazy_bind_off);
4449 cmd->lazy_bind_size = bfd_get_32 (abfd, raw.lazy_bind_size);
c9ffd2ea 4450 cmd->lazy_bind_content = NULL;
46d1c23b
TG		 4451 cmd->export_off = bfd_get_32 (abfd, raw.export_off);
4452 cmd->export_size = bfd_get_32 (abfd, raw.export_size);
c9ffd2ea 4453 cmd->export_content = NULL;
452216ab 4454 return TRUE;
ad86f1fb
TG		 4455}
4456
edbdea0e
TG		 4457static bfd_boolean
4458bfd_mach_o_read_version_min (bfd *abfd, bfd_mach_o_load_command *command)
4459{
4460 bfd_mach_o_version_min_command *cmd = &command->command.version_min;
4461 struct mach_o_version_min_command_external raw;
4462 unsigned int ver;
4463
47daa70f 4464 if (bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
edbdea0e
TG		 4465 return FALSE;
4466
4467 ver = bfd_get_32 (abfd, raw.version);
4468 cmd->rel = ver >> 16;
4469 cmd->maj = ver >> 8;
4470 cmd->min = ver;
4471 cmd->reserved = bfd_get_32 (abfd, raw.reserved);
4472 return TRUE;
4473}
4474
fc55a902
TG		 4475static bfd_boolean
4476bfd_mach_o_read_encryption_info (bfd *abfd, bfd_mach_o_load_command *command)
4477{
4478 bfd_mach_o_encryption_info_command *cmd = &command->command.encryption_info;
4479 struct mach_o_encryption_info_command_external raw;
4480
47daa70f
TG		 4481 if (bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
4482 return FALSE;
4483
4484 cmd->cryptoff = bfd_get_32 (abfd, raw.cryptoff);
4485 cmd->cryptsize = bfd_get_32 (abfd, raw.cryptsize);
4486 cmd->cryptid = bfd_get_32 (abfd, raw.cryptid);
4487 return TRUE;
4488}
4489
4490static bfd_boolean
4491bfd_mach_o_read_encryption_info_64 (bfd *abfd, bfd_mach_o_load_command *command)
4492{
4493 bfd_mach_o_encryption_info_command *cmd = &command->command.encryption_info;
4494 struct mach_o_encryption_info_64_command_external raw;
4495
4496 if (bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
fc55a902
TG		 4497 return FALSE;
4498
4499 cmd->cryptoff = bfd_get_32 (abfd, raw.cryptoff);
4500 cmd->cryptsize = bfd_get_32 (abfd, raw.cryptsize);
4501 cmd->cryptid = bfd_get_32 (abfd, raw.cryptid);
4502 return TRUE;
4503}
4504
1778ad74
TG		 4505static bfd_boolean
4506bfd_mach_o_read_main (bfd *abfd, bfd_mach_o_load_command *command)
4507{
4508 bfd_mach_o_main_command *cmd = &command->command.main;
4509 struct mach_o_entry_point_command_external raw;
4510
47daa70f 4511 if (bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
1778ad74
TG		 4512 return FALSE;
4513
4514 cmd->entryoff = bfd_get_64 (abfd, raw.entryoff);
4515 cmd->stacksize = bfd_get_64 (abfd, raw.stacksize);
4516 return TRUE;
4517}
4518
4519static bfd_boolean
4520bfd_mach_o_read_source_version (bfd *abfd, bfd_mach_o_load_command *command)
4521{
4522 bfd_mach_o_source_version_command *cmd = &command->command.source_version;
4523 struct mach_o_source_version_command_external raw;
4524 bfd_uint64_t ver;
4525
47daa70f 4526 if (bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
1778ad74
TG		 4527 return FALSE;
4528
4529 ver = bfd_get_64 (abfd, raw.version);
4530 /* Note: we use a serie of shift to avoid shift > 32 (for which gcc
4531 generates warnings) in case of the host doesn't support 64 bit
4532 integers. */
4533 cmd->e = ver & 0x3ff;
4534 ver >>= 10;
4535 cmd->d = ver & 0x3ff;
4536 ver >>= 10;
4537 cmd->c = ver & 0x3ff;
4538 ver >>= 10;
4539 cmd->b = ver & 0x3ff;
4540 ver >>= 10;
4541 cmd->a = ver & 0xffffff;
4542 return TRUE;
4543}
4544
452216ab 4545static bfd_boolean
ab273af8
TG		 4546bfd_mach_o_read_segment (bfd *abfd,
4547 bfd_mach_o_load_command *command,
4548 unsigned int wide)
3af9a47b 4549{
3af9a47b
NC		 4550 bfd_mach_o_segment_command *seg = &command->command.segment;
4551 unsigned long i;
a95a4550 4552
1e8a024a
TG		 4553 if (wide)
4554 {
46d1c23b
TG		 4555 struct mach_o_segment_command_64_external raw;
4556
1e8a024a 4557 BFD_ASSERT (command->type == BFD_MACH_O_LC_SEGMENT_64);
3af9a47b 4558
47daa70f 4559 if (bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
452216ab 4560 return FALSE;
3af9a47b 4561
46d1c23b 4562 memcpy (seg->segname, raw.segname, 16);
15e1c58a 4563 seg->segname[16] = '\0';
1e8a024a 4564
46d1c23b
TG		 4565 seg->vmaddr = bfd_h_get_64 (abfd, raw.vmaddr);
4566 seg->vmsize = bfd_h_get_64 (abfd, raw.vmsize);
4567 seg->fileoff = bfd_h_get_64 (abfd, raw.fileoff);
4568 seg->filesize = bfd_h_get_64 (abfd, raw.filesize);
4569 seg->maxprot = bfd_h_get_32 (abfd, raw.maxprot);
4570 seg->initprot = bfd_h_get_32 (abfd, raw.initprot);
4571 seg->nsects = bfd_h_get_32 (abfd, raw.nsects);
4572 seg->flags = bfd_h_get_32 (abfd, raw.flags);
1e8a024a
TG		 4573 }
4574 else
4575 {
46d1c23b
TG		 4576 struct mach_o_segment_command_32_external raw;
4577
1e8a024a
TG		 4578 BFD_ASSERT (command->type == BFD_MACH_O_LC_SEGMENT);
4579
47daa70f 4580 if (bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
452216ab 4581 return FALSE;
1e8a024a 4582
46d1c23b 4583 memcpy (seg->segname, raw.segname, 16);
15e1c58a 4584 seg->segname[16] = '\0';
1e8a024a 4585
46d1c23b
TG		 4586 seg->vmaddr = bfd_h_get_32 (abfd, raw.vmaddr);
4587 seg->vmsize = bfd_h_get_32 (abfd, raw.vmsize);
4588 seg->fileoff = bfd_h_get_32 (abfd, raw.fileoff);
4589 seg->filesize = bfd_h_get_32 (abfd, raw.filesize);
4590 seg->maxprot = bfd_h_get_32 (abfd, raw.maxprot);
4591 seg->initprot = bfd_h_get_32 (abfd, raw.initprot);
4592 seg->nsects = bfd_h_get_32 (abfd, raw.nsects);
4593 seg->flags = bfd_h_get_32 (abfd, raw.flags);
1e8a024a 4594 }
9d4b6009
TG		 4595 seg->sect_head = NULL;
4596 seg->sect_tail = NULL;
3af9a47b 4597
f1bde64c 4598 for (i = 0; i < seg->nsects; i++)
3af9a47b 4599 {
f1bde64c 4600 asection *sec;
a95a4550 4601
47daa70f 4602 sec = bfd_mach_o_read_section (abfd, seg->initprot, wide);
f1bde64c 4603 if (sec == NULL)
452216ab 4604 return FALSE;
f1bde64c 4605
c9ffd2ea
TG		 4606 bfd_mach_o_append_section_to_segment
4607 (seg, bfd_mach_o_get_mach_o_section (sec));
3af9a47b
NC		 4608 }
4609
452216ab 4610 return TRUE;
3af9a47b
NC		 4611}
4612
452216ab 4613static bfd_boolean
ab273af8 4614bfd_mach_o_read_segment_32 (bfd *abfd, bfd_mach_o_load_command *command)
1e8a024a 4615{
ab273af8 4616 return bfd_mach_o_read_segment (abfd, command, 0);
1e8a024a
TG		 4617}
4618
452216ab 4619static bfd_boolean
ab273af8 4620bfd_mach_o_read_segment_64 (bfd *abfd, bfd_mach_o_load_command *command)
1e8a024a 4621{
ab273af8 4622 return bfd_mach_o_read_segment (abfd, command, 1);
1e8a024a
TG		 4623}
4624
452216ab 4625static bfd_boolean
ab273af8 4626bfd_mach_o_read_command (bfd *abfd, bfd_mach_o_load_command *command)
3af9a47b 4627{
47daa70f 4628 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
46d1c23b
TG		 4629 struct mach_o_load_command_external raw;
4630 unsigned int cmd;
3af9a47b 4631
046b007d 4632 /* Read command type and length. */
47daa70f 4633 if (bfd_seek (abfd, mdata->hdr_offset + command->offset, SEEK_SET) != 0
46d1c23b 4634 || bfd_bread (&raw, BFD_MACH_O_LC_SIZE, abfd) != BFD_MACH_O_LC_SIZE)
452216ab 4635 return FALSE;
3af9a47b 4636
46d1c23b
TG		 4637 cmd = bfd_h_get_32 (abfd, raw.cmd);
4638 command->type = cmd & ~BFD_MACH_O_LC_REQ_DYLD;
4639 command->type_required = cmd & BFD_MACH_O_LC_REQ_DYLD ? TRUE : FALSE;
4640 command->len = bfd_h_get_32 (abfd, raw.cmdsize);
3af9a47b
NC		 4641
4642 switch (command->type)
4643 {
4644 case BFD_MACH_O_LC_SEGMENT:
452216ab
TG		 4645 if (!bfd_mach_o_read_segment_32 (abfd, command))
4646 return FALSE;
1e8a024a
TG		 4647 break;
4648 case BFD_MACH_O_LC_SEGMENT_64:
452216ab
TG		 4649 if (!bfd_mach_o_read_segment_64 (abfd, command))
4650 return FALSE;
3af9a47b
NC		 4651 break;
4652 case BFD_MACH_O_LC_SYMTAB:
452216ab
TG		 4653 if (!bfd_mach_o_read_symtab (abfd, command))
4654 return FALSE;
3af9a47b
NC		 4655 break;
4656 case BFD_MACH_O_LC_SYMSEG:
4657 break;
4658 case BFD_MACH_O_LC_THREAD:
4659 case BFD_MACH_O_LC_UNIXTHREAD:
452216ab
TG		 4660 if (!bfd_mach_o_read_thread (abfd, command))
4661 return FALSE;
3af9a47b
NC		 4662 break;
4663 case BFD_MACH_O_LC_LOAD_DYLINKER:
4664 case BFD_MACH_O_LC_ID_DYLINKER:
10be66a4 4665 case BFD_MACH_O_LC_DYLD_ENVIRONMENT:
452216ab
TG		 4666 if (!bfd_mach_o_read_dylinker (abfd, command))
4667 return FALSE;
3af9a47b
NC		 4668 break;
4669 case BFD_MACH_O_LC_LOAD_DYLIB:
fbe383b9 4670 case BFD_MACH_O_LC_LAZY_LOAD_DYLIB:
3af9a47b
NC		 4671 case BFD_MACH_O_LC_ID_DYLIB:
4672 case BFD_MACH_O_LC_LOAD_WEAK_DYLIB:
046b007d 4673 case BFD_MACH_O_LC_REEXPORT_DYLIB:
73017762 4674 case BFD_MACH_O_LC_LOAD_UPWARD_DYLIB:
452216ab
TG		 4675 if (!bfd_mach_o_read_dylib (abfd, command))
4676 return FALSE;
3af9a47b
NC		 4677 break;
4678 case BFD_MACH_O_LC_PREBOUND_DYLIB:
452216ab
TG		 4679 if (!bfd_mach_o_read_prebound_dylib (abfd, command))
4680 return FALSE;
3af9a47b
NC		 4681 break;
4682 case BFD_MACH_O_LC_LOADFVMLIB:
4683 case BFD_MACH_O_LC_IDFVMLIB:
452216ab
TG		 4684 if (!bfd_mach_o_read_fvmlib (abfd, command))
4685 return FALSE;
9f4a5bd1 4686 break;
3af9a47b
NC		 4687 case BFD_MACH_O_LC_IDENT:
4688 case BFD_MACH_O_LC_FVMFILE:
4689 case BFD_MACH_O_LC_PREPAGE:
4690 case BFD_MACH_O_LC_ROUTINES:
9b02d212 4691 case BFD_MACH_O_LC_ROUTINES_64:
046b007d 4692 break;
3af9a47b 4693 case BFD_MACH_O_LC_SUB_FRAMEWORK:
046b007d
TG		 4694 case BFD_MACH_O_LC_SUB_UMBRELLA:
4695 case BFD_MACH_O_LC_SUB_LIBRARY:
4696 case BFD_MACH_O_LC_SUB_CLIENT:
0c9b2b4c 4697 case BFD_MACH_O_LC_RPATH:
452216ab
TG		 4698 if (!bfd_mach_o_read_str (abfd, command))
4699 return FALSE;
3af9a47b
NC		 4700 break;
4701 case BFD_MACH_O_LC_DYSYMTAB:
452216ab
TG		 4702 if (!bfd_mach_o_read_dysymtab (abfd, command))
4703 return FALSE;
3af9a47b 4704 break;
3af9a47b 4705 case BFD_MACH_O_LC_PREBIND_CKSUM:
452216ab
TG		 4706 if (!bfd_mach_o_read_prebind_cksum (abfd, command))
4707 return FALSE;
7a79c514
TG		 4708 break;
4709 case BFD_MACH_O_LC_TWOLEVEL_HINTS:
452216ab
TG		 4710 if (!bfd_mach_o_read_twolevel_hints (abfd, command))
4711 return FALSE;
3af9a47b 4712 break;
15e1c58a 4713 case BFD_MACH_O_LC_UUID:
452216ab
TG		 4714 if (!bfd_mach_o_read_uuid (abfd, command))
4715 return FALSE;
15e1c58a
TG		 4716 break;
4717 case BFD_MACH_O_LC_CODE_SIGNATURE:
846b9259 4718 case BFD_MACH_O_LC_SEGMENT_SPLIT_INFO:
edbdea0e 4719 case BFD_MACH_O_LC_FUNCTION_STARTS:
1778ad74
TG		 4720 case BFD_MACH_O_LC_DATA_IN_CODE:
4721 case BFD_MACH_O_LC_DYLIB_CODE_SIGN_DRS:
47daa70f 4722 case BFD_MACH_O_LC_LINKER_OPTIMIZATION_HINT:
452216ab
TG		 4723 if (!bfd_mach_o_read_linkedit (abfd, command))
4724 return FALSE;
15e1c58a 4725 break;
fc55a902
TG		 4726 case BFD_MACH_O_LC_ENCRYPTION_INFO:
4727 if (!bfd_mach_o_read_encryption_info (abfd, command))
452216ab 4728 return FALSE;
fc55a902 4729 break;
47daa70f
TG		 4730 case BFD_MACH_O_LC_ENCRYPTION_INFO_64:
4731 if (!bfd_mach_o_read_encryption_info_64 (abfd, command))
4732 return FALSE;
4733 break;
ad86f1fb 4734 case BFD_MACH_O_LC_DYLD_INFO:
452216ab
TG		 4735 if (!bfd_mach_o_read_dyld_info (abfd, command))
4736 return FALSE;
ad86f1fb 4737 break;
edbdea0e
TG		 4738 case BFD_MACH_O_LC_VERSION_MIN_MACOSX:
4739 case BFD_MACH_O_LC_VERSION_MIN_IPHONEOS:
47daa70f 4740 case BFD_MACH_O_LC_VERSION_MIN_WATCHOS:
edbdea0e 4741 if (!bfd_mach_o_read_version_min (abfd, command))
452216ab 4742 return FALSE;
edbdea0e 4743 break;
1778ad74
TG		 4744 case BFD_MACH_O_LC_MAIN:
4745 if (!bfd_mach_o_read_main (abfd, command))
452216ab 4746 return FALSE;
1778ad74
TG		 4747 break;
4748 case BFD_MACH_O_LC_SOURCE_VERSION:
4749 if (!bfd_mach_o_read_source_version (abfd, command))
452216ab 4750 return FALSE;
1778ad74 4751 break;
3af9a47b 4752 default:
86eafac0 4753 command->len = 0;
4eca0228
AM		 4754 _bfd_error_handler (_("%B: unknown load command 0x%lx"),
4755 abfd, (unsigned long) command->type);
86eafac0 4756 return FALSE;
3af9a47b
NC		 4757 }
4758
452216ab 4759 return TRUE;
3af9a47b
NC		 4760}
4761
4762static void
116c20d2 4763bfd_mach_o_flatten_sections (bfd *abfd)
3af9a47b 4764{
046b007d 4765 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
c9ffd2ea 4766 bfd_mach_o_load_command *cmd;
3af9a47b 4767 long csect = 0;
a95a4550 4768
15e1c58a 4769 /* Count total number of sections. */
3af9a47b
NC		 4770 mdata->nsects = 0;
4771
c9ffd2ea 4772 for (cmd = mdata->first_command; cmd != NULL; cmd = cmd->next)
3af9a47b 4773 {
c9ffd2ea
TG		 4774 if (cmd->type == BFD_MACH_O_LC_SEGMENT
4775 || cmd->type == BFD_MACH_O_LC_SEGMENT_64)
3af9a47b 4776 {
c9ffd2ea 4777 bfd_mach_o_segment_command *seg = &cmd->command.segment;
e84d6fca 4778
3af9a47b
NC		 4779 mdata->nsects += seg->nsects;
4780 }
4781 }
4782
15e1c58a 4783 /* Allocate sections array. */
64d29018
NC		 4784 mdata->sections = bfd_alloc2 (abfd,
4785 mdata->nsects, sizeof (bfd_mach_o_section *));
15e1c58a
TG		 4786
4787 /* Fill the array. */
3af9a47b
NC		 4788 csect = 0;
4789
c9ffd2ea 4790 for (cmd = mdata->first_command; cmd != NULL; cmd = cmd->next)
3af9a47b 4791 {
c9ffd2ea
TG		 4792 if (cmd->type == BFD_MACH_O_LC_SEGMENT
4793 || cmd->type == BFD_MACH_O_LC_SEGMENT_64)
3af9a47b 4794 {
c9ffd2ea 4795 bfd_mach_o_segment_command *seg = &cmd->command.segment;
f1bde64c 4796 bfd_mach_o_section *sec;
3af9a47b
NC		 4797
4798 BFD_ASSERT (csect + seg->nsects <= mdata->nsects);
4799
f1bde64c
TG		 4800 for (sec = seg->sect_head; sec != NULL; sec = sec->next)
4801 mdata->sections[csect++] = sec;
3af9a47b
NC		 4802 }
4803 }
4804}
4805
afbb9e17 4806static bfd_boolean
116c20d2 4807bfd_mach_o_scan_start_address (bfd *abfd)
3af9a47b 4808{
046b007d 4809 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
c9ffd2ea
TG		 4810 bfd_mach_o_thread_command *thr = NULL;
4811 bfd_mach_o_load_command *cmd;
3af9a47b
NC		 4812 unsigned long i;
4813
c9ffd2ea
TG		 4814 for (cmd = mdata->first_command; cmd != NULL; cmd = cmd->next)
4815 if (cmd->type == BFD_MACH_O_LC_THREAD
4816 || cmd->type == BFD_MACH_O_LC_UNIXTHREAD)
afbb9e17 4817 {
c9ffd2ea 4818 thr = &cmd->command.thread;
afbb9e17
TG		 4819 break;
4820 }
c9ffd2ea 4821 else if (cmd->type == BFD_MACH_O_LC_MAIN && mdata->nsects > 1)
c0fd7846 4822 {
c9ffd2ea 4823 bfd_mach_o_main_command *main_cmd = &cmd->command.main;
c0fd7846 4824 bfd_mach_o_section *text_sect = mdata->sections[0];
c9ffd2ea 4825
c0fd7846
TG		 4826 if (text_sect)
4827 {
4828 abfd->start_address = main_cmd->entryoff
4829 + (text_sect->addr - text_sect->offset);
4830 return TRUE;
4831 }
4832 }
3af9a47b 4833
5ee43bc4 4834 /* An object file has no start address, so do not fail if not found. */
c9ffd2ea 4835 if (thr == NULL)
5ee43bc4 4836 return TRUE;
3af9a47b 4837
afbb9e17 4838 /* FIXME: create a subtarget hook ? */
c9ffd2ea 4839 for (i = 0; i < thr->nflavours; i++)
3af9a47b 4840 {
a95a4550 4841 if ((mdata->header.cputype == BFD_MACH_O_CPU_TYPE_I386)
c9ffd2ea 4842 && (thr->flavours[i].flavour == BFD_MACH_O_x86_THREAD_STATE32))
3af9a47b
NC		 4843 {
4844 unsigned char buf[4];
4845
c9ffd2ea 4846 if (bfd_seek (abfd, thr->flavours[i].offset + 40, SEEK_SET) != 0
c2f09c75 4847 || bfd_bread (buf, 4, abfd) != 4)
afbb9e17 4848 return FALSE;
3af9a47b
NC		 4849
4850 abfd->start_address = bfd_h_get_32 (abfd, buf);
4851 }
a95a4550 4852 else if ((mdata->header.cputype == BFD_MACH_O_CPU_TYPE_POWERPC)
c9ffd2ea 4853 && (thr->flavours[i].flavour == BFD_MACH_O_PPC_THREAD_STATE))
3af9a47b
NC		 4854 {
4855 unsigned char buf[4];
4856
c9ffd2ea 4857 if (bfd_seek (abfd, thr->flavours[i].offset + 0, SEEK_SET) != 0
c2f09c75 4858 || bfd_bread (buf, 4, abfd) != 4)
afbb9e17 4859 return FALSE;
3af9a47b
NC		 4860
4861 abfd->start_address = bfd_h_get_32 (abfd, buf);
4862 }
1e8a024a 4863 else if ((mdata->header.cputype == BFD_MACH_O_CPU_TYPE_POWERPC_64)
c9ffd2ea 4864 && (thr->flavours[i].flavour == BFD_MACH_O_PPC_THREAD_STATE64))
1e8a024a
TG		 4865 {
4866 unsigned char buf[8];
4867
c9ffd2ea 4868 if (bfd_seek (abfd, thr->flavours[i].offset + 0, SEEK_SET) != 0
c2f09c75 4869 || bfd_bread (buf, 8, abfd) != 8)
afbb9e17 4870 return FALSE;
1e8a024a
TG		 4871
4872 abfd->start_address = bfd_h_get_64 (abfd, buf);
4873 }
4874 else if ((mdata->header.cputype == BFD_MACH_O_CPU_TYPE_X86_64)
c9ffd2ea 4875 && (thr->flavours[i].flavour == BFD_MACH_O_x86_THREAD_STATE64))
1e8a024a
TG		 4876 {
4877 unsigned char buf[8];
4878
c9ffd2ea 4879 if (bfd_seek (abfd, thr->flavours[i].offset + (16 * 8), SEEK_SET) != 0
c2f09c75 4880 || bfd_bread (buf, 8, abfd) != 8)
afbb9e17 4881 return FALSE;
1e8a024a
TG		 4882
4883 abfd->start_address = bfd_h_get_64 (abfd, buf);
4884 }
3af9a47b
NC		 4885 }
4886
afbb9e17 4887 return TRUE;
3af9a47b
NC		 4888}
4889
42fa0891
TG		 4890bfd_boolean
4891bfd_mach_o_set_arch_mach (bfd *abfd,
4892 enum bfd_architecture arch,
4893 unsigned long machine)
4894{
4895 bfd_mach_o_backend_data *bed = bfd_mach_o_get_backend_data (abfd);
4896
4897 /* If this isn't the right architecture for this backend, and this
4898 isn't the generic backend, fail. */
4899 if (arch != bed->arch
4900 && arch != bfd_arch_unknown
4901 && bed->arch != bfd_arch_unknown)
4902 return FALSE;
4903
4904 return bfd_default_set_arch_mach (abfd, arch, machine);
4905}
4906
afbb9e17 4907static bfd_boolean
116c20d2
NC		 4908bfd_mach_o_scan (bfd *abfd,
4909 bfd_mach_o_header *header,
4910 bfd_mach_o_data_struct *mdata)
3af9a47b
NC		 4911{
4912 unsigned int i;
3af9a47b
NC		 4913 enum bfd_architecture cputype;
4914 unsigned long cpusubtype;
1e8a024a
TG		 4915 unsigned int hdrsize;
4916
c2f09c75 4917 hdrsize = mach_o_wide_p (header) ?
154a1ee5 4918 BFD_MACH_O_HEADER_64_SIZE : BFD_MACH_O_HEADER_SIZE;
3af9a47b 4919
3af9a47b 4920 mdata->header = *header;
3af9a47b 4921
154a1ee5 4922 abfd->flags = abfd->flags & BFD_IN_MEMORY;
15e1c58a
TG		 4923 switch (header->filetype)
4924 {
4925 case BFD_MACH_O_MH_OBJECT:
4926 abfd->flags |= HAS_RELOC;
4927 break;
4928 case BFD_MACH_O_MH_EXECUTE:
4929 abfd->flags |= EXEC_P;
4930 break;
4931 case BFD_MACH_O_MH_DYLIB:
4932 case BFD_MACH_O_MH_BUNDLE:
4933 abfd->flags |= DYNAMIC;
4934 break;
4935 }
4936
3af9a47b
NC		 4937 abfd->tdata.mach_o_data = mdata;
4938
e84d6fca
AM		 4939 bfd_mach_o_convert_architecture (header->cputype, header->cpusubtype,
4940 &cputype, &cpusubtype);
3af9a47b
NC		 4941 if (cputype == bfd_arch_unknown)
4942 {
4eca0228 4943 _bfd_error_handler
afbb9e17
TG		 4944 (_("bfd_mach_o_scan: unknown architecture 0x%lx/0x%lx"),
4945 header->cputype, header->cpusubtype);
4946 return FALSE;
3af9a47b
NC		 4947 }
4948
4949 bfd_set_arch_mach (abfd, cputype, cpusubtype);
a95a4550 4950
3af9a47b
NC		 4951 if (header->ncmds != 0)
4952 {
c9ffd2ea
TG		 4953 bfd_mach_o_load_command *cmd;
4954
4955 mdata->first_command = NULL;
4956 mdata->last_command = NULL;
64d29018
NC		 4957
4958 cmd = bfd_alloc2 (abfd, header->ncmds, sizeof (bfd_mach_o_load_command));
c9ffd2ea 4959 if (cmd == NULL)
afbb9e17 4960 return FALSE;
a95a4550 4961
3af9a47b
NC		 4962 for (i = 0; i < header->ncmds; i++)
4963 {
c9ffd2ea
TG		 4964 bfd_mach_o_load_command *cur = &cmd[i];
4965
4966 bfd_mach_o_append_command (abfd, cur);
3af9a47b
NC		 4967
4968 if (i == 0)
1e8a024a 4969 cur->offset = hdrsize;
3af9a47b
NC		 4970 else
4971 {
c9ffd2ea 4972 bfd_mach_o_load_command *prev = &cmd[i - 1];
3af9a47b
NC		 4973 cur->offset = prev->offset + prev->len;
4974 }
4975
452216ab 4976 if (!bfd_mach_o_read_command (abfd, cur))
afbb9e17 4977 return FALSE;
a95a4550 4978 }
3af9a47b
NC		 4979 }
4980
c0fd7846
TG		 4981 /* Sections should be flatten before scanning start address. */
4982 bfd_mach_o_flatten_sections (abfd);
4983 if (!bfd_mach_o_scan_start_address (abfd))
afbb9e17 4984 return FALSE;
3af9a47b 4985
afbb9e17 4986 return TRUE;
3af9a47b
NC		 4987}
4988
b34976b6 4989bfd_boolean
154a1ee5 4990bfd_mach_o_mkobject_init (bfd *abfd)
3af9a47b
NC		 4991{
4992 bfd_mach_o_data_struct *mdata = NULL;
4993
b30a5d18 4994 mdata = bfd_zalloc (abfd, sizeof (bfd_mach_o_data_struct));
3af9a47b 4995 if (mdata == NULL)
b34976b6 4996 return FALSE;
3af9a47b
NC		 4997 abfd->tdata.mach_o_data = mdata;
4998
4999 mdata->header.magic = 0;
5000 mdata->header.cputype = 0;
5001 mdata->header.cpusubtype = 0;
5002 mdata->header.filetype = 0;
5003 mdata->header.ncmds = 0;
5004 mdata->header.sizeofcmds = 0;
5005 mdata->header.flags = 0;
5006 mdata->header.byteorder = BFD_ENDIAN_UNKNOWN;
c9ffd2ea
TG		 5007 mdata->first_command = NULL;
5008 mdata->last_command = NULL;
3af9a47b
NC		 5009 mdata->nsects = 0;
5010 mdata->sections = NULL;
4434114c 5011 mdata->dyn_reloc_cache = NULL;
3af9a47b 5012
b34976b6 5013 return TRUE;
3af9a47b
NC		 5014}
5015
42fa0891
TG		 5016static bfd_boolean
5017bfd_mach_o_gen_mkobject (bfd *abfd)
5018{
5019 bfd_mach_o_data_struct *mdata;
5020
5021 if (!bfd_mach_o_mkobject_init (abfd))
5022 return FALSE;
5023
5024 mdata = bfd_mach_o_get_data (abfd);
5025 mdata->header.magic = BFD_MACH_O_MH_MAGIC;
5026 mdata->header.cputype = 0;
5027 mdata->header.cpusubtype = 0;
5028 mdata->header.byteorder = abfd->xvec->byteorder;
5029 mdata->header.version = 1;
5030
5031 return TRUE;
5032}
5033
3af9a47b 5034const bfd_target *
154a1ee5 5035bfd_mach_o_header_p (bfd *abfd,
47daa70f 5036 file_ptr hdr_off,
154a1ee5
TG		 5037 bfd_mach_o_filetype filetype,
5038 bfd_mach_o_cpu_type cputype)
3af9a47b
NC		 5039{
5040 bfd_mach_o_header header;
c9ba0c87 5041 bfd_mach_o_data_struct *mdata;
3af9a47b 5042
47daa70f 5043 if (!bfd_mach_o_read_header (abfd, hdr_off, &header))
e84d6fca 5044 goto wrong;
3af9a47b 5045
e84d6fca
AM		 5046 if (! (header.byteorder == BFD_ENDIAN_BIG
5047 || header.byteorder == BFD_ENDIAN_LITTLE))
3af9a47b 5048 {
4eca0228
AM		 5049 _bfd_error_handler (_("unknown header byte-order value 0x%lx"),
5050 (unsigned long) header.byteorder);
e84d6fca 5051 goto wrong;
3af9a47b
NC		 5052 }
5053
e84d6fca
AM		 5054 if (! ((header.byteorder == BFD_ENDIAN_BIG
5055 && abfd->xvec->byteorder == BFD_ENDIAN_BIG
5056 && abfd->xvec->header_byteorder == BFD_ENDIAN_BIG)
5057 || (header.byteorder == BFD_ENDIAN_LITTLE
5058 && abfd->xvec->byteorder == BFD_ENDIAN_LITTLE
5059 && abfd->xvec->header_byteorder == BFD_ENDIAN_LITTLE)))
5060 goto wrong;
3af9a47b 5061
154a1ee5
TG		 5062 /* Check cputype and filetype.
5063 In case of wildcard, do not accept magics that are handled by existing
5064 targets. */
5065 if (cputype)
5066 {
5067 if (header.cputype != cputype)
5068 goto wrong;
5069 }
26954155
TG		 5070 else
5071 {
5072#ifndef BFD64
5073 /* Do not recognize 64 architectures if not configured for 64bit targets.
5074 This could happen only for generic targets. */
5075 if (mach_o_wide_p (&header))
5076 goto wrong;
5077#endif
5078 }
b22161d6 5079
154a1ee5
TG		 5080 if (filetype)
5081 {
5082 if (header.filetype != filetype)
5083 goto wrong;
5084 }
5085 else
5086 {
5087 switch (header.filetype)
5088 {
5089 case BFD_MACH_O_MH_CORE:
5090 /* Handled by core_p */
5091 goto wrong;
5092 default:
5093 break;
5094 }
5095 }
5096
c9ba0c87
AM		 5097 mdata = (bfd_mach_o_data_struct *) bfd_zalloc (abfd, sizeof (*mdata));
5098 if (mdata == NULL)
e84d6fca 5099 goto fail;
47daa70f 5100 mdata->hdr_offset = hdr_off;
3af9a47b 5101
c9ba0c87 5102 if (!bfd_mach_o_scan (abfd, &header, mdata))
e84d6fca 5103 goto wrong;
a95a4550 5104
3af9a47b 5105 return abfd->xvec;
e84d6fca
AM		 5106
5107 wrong:
5108 bfd_set_error (bfd_error_wrong_format);
5109
5110 fail:
e84d6fca 5111 return NULL;
3af9a47b
NC		 5112}
5113
154a1ee5
TG		 5114static const bfd_target *
5115bfd_mach_o_gen_object_p (bfd *abfd)
3af9a47b 5116{
47daa70f 5117 return bfd_mach_o_header_p (abfd, 0, 0, 0);
154a1ee5 5118}
e84d6fca 5119
154a1ee5
TG		 5120static const bfd_target *
5121bfd_mach_o_gen_core_p (bfd *abfd)
5122{
47daa70f 5123 return bfd_mach_o_header_p (abfd, 0, BFD_MACH_O_MH_CORE, 0);
3af9a47b
NC		 5124}
5125
3cc27770
TG		 5126/* Return the base address of ABFD, ie the address at which the image is
5127 mapped. The possible initial pagezero is ignored. */
5128
5129bfd_vma
5130bfd_mach_o_get_base_address (bfd *abfd)
5131{
5132 bfd_mach_o_data_struct *mdata;
c9ffd2ea 5133 bfd_mach_o_load_command *cmd;
3cc27770
TG		 5134
5135 /* Check for Mach-O. */
5136 if (!bfd_mach_o_valid (abfd))
5137 return 0;
5138 mdata = bfd_mach_o_get_data (abfd);
5139
c9ffd2ea 5140 for (cmd = mdata->first_command; cmd != NULL; cmd = cmd->next)
3cc27770 5141 {
3cc27770
TG		 5142 if ((cmd->type == BFD_MACH_O_LC_SEGMENT
5143 || cmd->type == BFD_MACH_O_LC_SEGMENT_64))
5144 {
5145 struct bfd_mach_o_segment_command *segcmd = &cmd->command.segment;
5146
5147 if (segcmd->initprot != 0)
5148 return segcmd->vmaddr;
5149 }
5150 }
5151 return 0;
5152}
5153
3af9a47b
NC		 5154typedef struct mach_o_fat_archentry
5155{
5156 unsigned long cputype;
5157 unsigned long cpusubtype;
5158 unsigned long offset;
5159 unsigned long size;
5160 unsigned long align;
3af9a47b
NC		 5161} mach_o_fat_archentry;
5162
5163typedef struct mach_o_fat_data_struct
5164{
5165 unsigned long magic;
5166 unsigned long nfat_arch;
5167 mach_o_fat_archentry *archentries;
5168} mach_o_fat_data_struct;
5169
5170const bfd_target *
47daa70f 5171bfd_mach_o_fat_archive_p (bfd *abfd)
3af9a47b 5172{
e84d6fca 5173 mach_o_fat_data_struct *adata = NULL;
46d1c23b 5174 struct mach_o_fat_header_external hdr;
3af9a47b
NC		 5175 unsigned long i;
5176
c2f09c75 5177 if (bfd_seek (abfd, 0, SEEK_SET) != 0
46d1c23b 5178 || bfd_bread (&hdr, sizeof (hdr), abfd) != sizeof (hdr))
e84d6fca 5179 goto error;
3af9a47b 5180
116c20d2 5181 adata = bfd_alloc (abfd, sizeof (mach_o_fat_data_struct));
3af9a47b 5182 if (adata == NULL)
e84d6fca 5183 goto error;
a95a4550 5184
46d1c23b
TG		 5185 adata->magic = bfd_getb32 (hdr.magic);
5186 adata->nfat_arch = bfd_getb32 (hdr.nfat_arch);
3af9a47b 5187 if (adata->magic != 0xcafebabe)
e84d6fca 5188 goto error;
27cc28f9
AS		 5189 /* Avoid matching Java bytecode files, which have the same magic number.
5190 In the Java bytecode file format this field contains the JVM version,
5191 which starts at 43.0. */
5192 if (adata->nfat_arch > 30)
5193 goto error;
3af9a47b 5194
c2f09c75 5195 adata->archentries =
64d29018 5196 bfd_alloc2 (abfd, adata->nfat_arch, sizeof (mach_o_fat_archentry));
3af9a47b 5197 if (adata->archentries == NULL)
e84d6fca 5198 goto error;
3af9a47b
NC		 5199
5200 for (i = 0; i < adata->nfat_arch; i++)
5201 {
46d1c23b
TG		 5202 struct mach_o_fat_arch_external arch;
5203 if (bfd_bread (&arch, sizeof (arch), abfd) != sizeof (arch))
e84d6fca 5204 goto error;
46d1c23b
TG		 5205 adata->archentries[i].cputype = bfd_getb32 (arch.cputype);
5206 adata->archentries[i].cpusubtype = bfd_getb32 (arch.cpusubtype);
5207 adata->archentries[i].offset = bfd_getb32 (arch.offset);
5208 adata->archentries[i].size = bfd_getb32 (arch.size);
5209 adata->archentries[i].align = bfd_getb32 (arch.align);
3af9a47b
NC		 5210 }
5211
5212 abfd->tdata.mach_o_fat_data = adata;
64d29018 5213
3af9a47b 5214 return abfd->xvec;
e84d6fca
AM		 5215
5216 error:
5217 if (adata != NULL)
5218 bfd_release (abfd, adata);
5219 bfd_set_error (bfd_error_wrong_format);
5220 return NULL;
3af9a47b
NC		 5221}
5222
a4e241ca
TG		 5223/* Set the filename for a fat binary member ABFD, whose bfd architecture is
5224 ARCH_TYPE/ARCH_SUBTYPE and corresponding entry in header is ENTRY.
5225 Set arelt_data and origin fields too. */
5226
5227static void
5228bfd_mach_o_fat_member_init (bfd *abfd,
5229 enum bfd_architecture arch_type,
5230 unsigned long arch_subtype,
5231 mach_o_fat_archentry *entry)
5232{
5233 struct areltdata *areltdata;
5234 /* Create the member filename. Use ARCH_NAME. */
5235 const bfd_arch_info_type *ap = bfd_lookup_arch (arch_type, arch_subtype);
5236
5237 if (ap)
5238 {
5239 /* Use the architecture name if known. */
1be5090b 5240 abfd->filename = xstrdup (ap->printable_name);
a4e241ca
TG		 5241 }
5242 else
5243 {
5244 /* Forge a uniq id. */
5245 const size_t namelen = 2 + 8 + 1 + 2 + 8 + 1;
1be5090b 5246 char *name = xmalloc (namelen);
a4e241ca
TG		 5247 snprintf (name, namelen, "0x%lx-0x%lx",
5248 entry->cputype, entry->cpusubtype);
5249 abfd->filename = name;
5250 }
5251
06e7acd7 5252 areltdata = bfd_zmalloc (sizeof (struct areltdata));
a4e241ca
TG		 5253 areltdata->parsed_size = entry->size;
5254 abfd->arelt_data = areltdata;
5255 abfd->iostream = NULL;
5256 abfd->origin = entry->offset;
5257}
5258
3af9a47b 5259bfd *
47daa70f 5260bfd_mach_o_fat_openr_next_archived_file (bfd *archive, bfd *prev)
3af9a47b 5261{
e84d6fca 5262 mach_o_fat_data_struct *adata;
3af9a47b
NC		 5263 mach_o_fat_archentry *entry = NULL;
5264 unsigned long i;
15e1c58a 5265 bfd *nbfd;
15e1c58a
TG		 5266 enum bfd_architecture arch_type;
5267 unsigned long arch_subtype;
3af9a47b 5268
e84d6fca 5269 adata = (mach_o_fat_data_struct *) archive->tdata.mach_o_fat_data;
3af9a47b
NC		 5270 BFD_ASSERT (adata != NULL);
5271
5272 /* Find index of previous entry. */
5273 if (prev == NULL)
a4e241ca
TG		 5274 {
5275 /* Start at first one. */
5276 i = 0;
5277 }
3af9a47b
NC		 5278 else
5279 {
a4e241ca 5280 /* Find index of PREV. */
3af9a47b
NC		 5281 for (i = 0; i < adata->nfat_arch; i++)
5282 {
15e1c58a 5283 if (adata->archentries[i].offset == prev->origin)
3af9a47b
NC		 5284 break;
5285 }
5286
5287 if (i == adata->nfat_arch)
5288 {
5289 /* Not found. */
5290 bfd_set_error (bfd_error_bad_value);
a95a4550 5291 return NULL;
3af9a47b 5292 }
a4e241ca
TG		 5293
5294 /* Get next entry. */
5295 i++;
5296 }
a95a4550 5297
3af9a47b
NC		 5298 if (i >= adata->nfat_arch)
5299 {
5300 bfd_set_error (bfd_error_no_more_archived_files);
5301 return NULL;
5302 }
5303
5304 entry = &adata->archentries[i];
15e1c58a
TG		 5305 nbfd = _bfd_new_bfd_contained_in (archive);
5306 if (nbfd == NULL)
5307 return NULL;
5308
15e1c58a
TG		 5309 bfd_mach_o_convert_architecture (entry->cputype, entry->cpusubtype,
5310 &arch_type, &arch_subtype);
846b9259 5311
a4e241ca
TG		 5312 bfd_mach_o_fat_member_init (nbfd, arch_type, arch_subtype, entry);
5313
846b9259 5314 bfd_set_arch_mach (nbfd, arch_type, arch_subtype);
3af9a47b 5315
15e1c58a 5316 return nbfd;
3af9a47b
NC		 5317}
5318
15bbba8d
TG		 5319/* Analogous to stat call. */
5320
5321static int
5322bfd_mach_o_fat_stat_arch_elt (bfd *abfd, struct stat *buf)
5323{
5324 if (abfd->arelt_data == NULL)
5325 {
5326 bfd_set_error (bfd_error_invalid_operation);
5327 return -1;
5328 }
5329
5330 buf->st_mtime = 0;
5331 buf->st_uid = 0;
5332 buf->st_gid = 0;
5333 buf->st_mode = 0644;
5334 buf->st_size = arelt_size (abfd);
5335
5336 return 0;
5337}
5338
846b9259
TG		 5339/* If ABFD format is FORMAT and architecture is ARCH, return it.
5340 If ABFD is a fat image containing a member that corresponds to FORMAT
5341 and ARCH, returns it.
5342 In other case, returns NULL.
5343 This function allows transparent uses of fat images. */
a4e241ca 5344
846b9259
TG		 5345bfd *
5346bfd_mach_o_fat_extract (bfd *abfd,
5347 bfd_format format,
5348 const bfd_arch_info_type *arch)
5349{
5350 bfd *res;
5351 mach_o_fat_data_struct *adata;
5352 unsigned int i;
5353
5354 if (bfd_check_format (abfd, format))
5355 {
5356 if (bfd_get_arch_info (abfd) == arch)
5357 return abfd;
5358 return NULL;
5359 }
5360 if (!bfd_check_format (abfd, bfd_archive)
5361 || abfd->xvec != &mach_o_fat_vec)
5362 return NULL;
c2f09c75 5363
846b9259
TG		 5364 /* This is a Mach-O fat image. */
5365 adata = (mach_o_fat_data_struct *) abfd->tdata.mach_o_fat_data;
5366 BFD_ASSERT (adata != NULL);
5367
5368 for (i = 0; i < adata->nfat_arch; i++)
5369 {
5370 struct mach_o_fat_archentry *e = &adata->archentries[i];
5371 enum bfd_architecture cpu_type;
5372 unsigned long cpu_subtype;
5373
5374 bfd_mach_o_convert_architecture (e->cputype, e->cpusubtype,
5375 &cpu_type, &cpu_subtype);
5376 if (cpu_type != arch->arch || cpu_subtype != arch->mach)
5377 continue;
5378
5379 /* The architecture is found. */
5380 res = _bfd_new_bfd_contained_in (abfd);
5381 if (res == NULL)
5382 return NULL;
5383
a4e241ca 5384 bfd_mach_o_fat_member_init (res, cpu_type, cpu_subtype, e);
846b9259
TG		 5385
5386 if (bfd_check_format (res, format))
5387 {
5388 BFD_ASSERT (bfd_get_arch_info (res) == arch);
5389 return res;
5390 }
5391 bfd_close (res);
5392 return NULL;
5393 }
5394
5395 return NULL;
5396}
5397
3af9a47b 5398int
116c20d2
NC		 5399bfd_mach_o_lookup_command (bfd *abfd,
5400 bfd_mach_o_load_command_type type,
5401 bfd_mach_o_load_command **mcommand)
3af9a47b 5402{
c9ffd2ea
TG		 5403 struct mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
5404 struct bfd_mach_o_load_command *cmd;
5405 unsigned int num;
3af9a47b 5406
c9ffd2ea 5407 BFD_ASSERT (mdata != NULL);
3af9a47b
NC		 5408 BFD_ASSERT (mcommand != NULL);
5409
5410 num = 0;
c9ffd2ea 5411 for (cmd = mdata->first_command; cmd != NULL; cmd = cmd->next)
3af9a47b 5412 {
3af9a47b
NC		 5413 if (cmd->type != type)
5414 continue;
5415
5416 if (num == 0)
c9ffd2ea 5417 *mcommand = cmd;
3af9a47b
NC		 5418 num++;
5419 }
5420
3af9a47b
NC		 5421 return num;
5422}
5423
5424unsigned long
116c20d2 5425bfd_mach_o_stack_addr (enum bfd_mach_o_cpu_type type)
3af9a47b
NC		 5426{
5427 switch (type)
5428 {
5429 case BFD_MACH_O_CPU_TYPE_MC680x0:
5430 return 0x04000000;
5431 case BFD_MACH_O_CPU_TYPE_MC88000:
5432 return 0xffffe000;
5433 case BFD_MACH_O_CPU_TYPE_POWERPC:
5434 return 0xc0000000;
5435 case BFD_MACH_O_CPU_TYPE_I386:
5436 return 0xc0000000;
5437 case BFD_MACH_O_CPU_TYPE_SPARC:
5438 return 0xf0000000;
5439 case BFD_MACH_O_CPU_TYPE_I860:
5440 return 0;
5441 case BFD_MACH_O_CPU_TYPE_HPPA:
e84d6fca 5442 return 0xc0000000 - 0x04000000;
3af9a47b
NC		 5443 default:
5444 return 0;
5445 }
5446}
5447
ab76eeaf
IS		 5448/* The following two tables should be kept, as far as possible, in order of
5449 most frequently used entries to optimize their use from gas. */
5450
c5012cd8 5451const bfd_mach_o_xlat_name bfd_mach_o_section_type_name[] =
046b007d
TG		 5452{
5453 { "regular", BFD_MACH_O_S_REGULAR},
ab76eeaf 5454 { "coalesced", BFD_MACH_O_S_COALESCED},
046b007d
TG		 5455 { "zerofill", BFD_MACH_O_S_ZEROFILL},
5456 { "cstring_literals", BFD_MACH_O_S_CSTRING_LITERALS},
5457 { "4byte_literals", BFD_MACH_O_S_4BYTE_LITERALS},
5458 { "8byte_literals", BFD_MACH_O_S_8BYTE_LITERALS},
ab76eeaf 5459 { "16byte_literals", BFD_MACH_O_S_16BYTE_LITERALS},
046b007d 5460 { "literal_pointers", BFD_MACH_O_S_LITERAL_POINTERS},
046b007d
TG		 5461 { "mod_init_func_pointers", BFD_MACH_O_S_MOD_INIT_FUNC_POINTERS},
5462 { "mod_fini_func_pointers", BFD_MACH_O_S_MOD_FINI_FUNC_POINTERS},
046b007d
TG		 5463 { "gb_zerofill", BFD_MACH_O_S_GB_ZEROFILL},
5464 { "interposing", BFD_MACH_O_S_INTERPOSING},
046b007d 5465 { "dtrace_dof", BFD_MACH_O_S_DTRACE_DOF},
ab76eeaf
IS		 5466 { "non_lazy_symbol_pointers", BFD_MACH_O_S_NON_LAZY_SYMBOL_POINTERS},
5467 { "lazy_symbol_pointers", BFD_MACH_O_S_LAZY_SYMBOL_POINTERS},
a4551119 5468 { "symbol_stubs", BFD_MACH_O_S_SYMBOL_STUBS},
046b007d
TG		 5469 { "lazy_dylib_symbol_pointers", BFD_MACH_O_S_LAZY_DYLIB_SYMBOL_POINTERS},
5470 { NULL, 0}
5471};
5472
c5012cd8 5473const bfd_mach_o_xlat_name bfd_mach_o_section_attribute_name[] =
046b007d 5474{
ab76eeaf
IS		 5475 { "pure_instructions", BFD_MACH_O_S_ATTR_PURE_INSTRUCTIONS },
5476 { "some_instructions", BFD_MACH_O_S_ATTR_SOME_INSTRUCTIONS },
046b007d
TG		 5477 { "loc_reloc", BFD_MACH_O_S_ATTR_LOC_RELOC },
5478 { "ext_reloc", BFD_MACH_O_S_ATTR_EXT_RELOC },
046b007d 5479 { "debug", BFD_MACH_O_S_ATTR_DEBUG },
046b007d
TG		 5480 { "live_support", BFD_MACH_O_S_ATTR_LIVE_SUPPORT },
5481 { "no_dead_strip", BFD_MACH_O_S_ATTR_NO_DEAD_STRIP },
5482 { "strip_static_syms", BFD_MACH_O_S_ATTR_STRIP_STATIC_SYMS },
5483 { "no_toc", BFD_MACH_O_S_ATTR_NO_TOC },
a4551119 5484 { "self_modifying_code", BFD_MACH_O_S_SELF_MODIFYING_CODE },
ab76eeaf 5485 { "modifying_code", BFD_MACH_O_S_SELF_MODIFYING_CODE },
046b007d
TG		 5486 { NULL, 0}
5487};
5488
a4551119 5489/* Get the section type from NAME. Return 256 if NAME is unknown. */
53d58d96
TG		 5490
5491unsigned int
ab76eeaf 5492bfd_mach_o_get_section_type_from_name (bfd *abfd, const char *name)
53d58d96 5493{
afbb9e17 5494 const bfd_mach_o_xlat_name *x;
ab76eeaf 5495 bfd_mach_o_backend_data *bed = bfd_mach_o_get_backend_data (abfd);
53d58d96
TG		 5496
5497 for (x = bfd_mach_o_section_type_name; x->name; x++)
5498 if (strcmp (x->name, name) == 0)
ab76eeaf
IS		 5499 {
5500 /* We found it... does the target support it? */
5501 if (bed->bfd_mach_o_section_type_valid_for_target == NULL
5502 || bed->bfd_mach_o_section_type_valid_for_target (x->val))
5503 return x->val; /* OK. */
5504 else
5505 break; /* Not supported. */
5506 }
a4551119
TG		 5507 /* Maximum section ID = 0xff. */
5508 return 256;
53d58d96
TG		 5509}
5510
5511/* Get the section attribute from NAME. Return -1 if NAME is unknown. */
5512
5513unsigned int
5514bfd_mach_o_get_section_attribute_from_name (const char *name)
5515{
afbb9e17 5516 const bfd_mach_o_xlat_name *x;
53d58d96
TG		 5517
5518 for (x = bfd_mach_o_section_attribute_name; x->name; x++)
5519 if (strcmp (x->name, name) == 0)
5520 return x->val;
5521 return (unsigned int)-1;
5522}
5523
3af9a47b 5524int
116c20d2
NC		 5525bfd_mach_o_core_fetch_environment (bfd *abfd,
5526 unsigned char **rbuf,
5527 unsigned int *rlen)
3af9a47b 5528{
046b007d 5529 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
3af9a47b 5530 unsigned long stackaddr = bfd_mach_o_stack_addr (mdata->header.cputype);
c9ffd2ea 5531 bfd_mach_o_load_command *cmd;
3af9a47b 5532
c9ffd2ea 5533 for (cmd = mdata->first_command; cmd != NULL; cmd = cmd->next)
3af9a47b 5534 {
c9ffd2ea 5535 bfd_mach_o_segment_command *seg;
3af9a47b 5536
c9ffd2ea 5537 if (cmd->type != BFD_MACH_O_LC_SEGMENT)
3af9a47b
NC		 5538 continue;
5539
c9ffd2ea 5540 seg = &cmd->command.segment;
3af9a47b
NC		 5541
5542 if ((seg->vmaddr + seg->vmsize) == stackaddr)
5543 {
5544 unsigned long start = seg->fileoff;
5545 unsigned long end = seg->fileoff + seg->filesize;
5546 unsigned char *buf = bfd_malloc (1024);
5547 unsigned long size = 1024;
5548
5549 for (;;)
5550 {
5551 bfd_size_type nread = 0;
5552 unsigned long offset;
5553 int found_nonnull = 0;
5554
5555 if (size > (end - start))
5556 size = (end - start);
5557
515ef31d
NC		 5558 buf = bfd_realloc_or_free (buf, size);
5559 if (buf == NULL)
5560 return -1;
c2f09c75
TG		 5561
5562 if (bfd_seek (abfd, end - size, SEEK_SET) != 0)
5563 {
5564 free (buf);
5565 return -1;
5566 }
5567
3af9a47b 5568 nread = bfd_bread (buf, size, abfd);
a95a4550 5569
3af9a47b 5570 if (nread != size)
515ef31d
NC		 5571 {
5572 free (buf);
5573 return -1;
5574 }
a95a4550 5575
3af9a47b
NC		 5576 for (offset = 4; offset <= size; offset += 4)
5577 {
e84d6fca 5578 unsigned long val;
3af9a47b 5579
e84d6fca 5580 val = *((unsigned long *) (buf + size - offset));
3af9a47b
NC		 5581 if (! found_nonnull)
5582 {
5583 if (val != 0)
5584 found_nonnull = 1;
5585 }
5586 else if (val == 0x0)
5587 {
e84d6fca
AM		 5588 unsigned long bottom;
5589 unsigned long top;
3af9a47b 5590
e84d6fca
AM		 5591 bottom = seg->fileoff + seg->filesize - offset;
5592 top = seg->fileoff + seg->filesize - 4;
3af9a47b
NC		 5593 *rbuf = bfd_malloc (top - bottom);
5594 *rlen = top - bottom;
5595
5596 memcpy (*rbuf, buf + size - *rlen, *rlen);
515ef31d 5597 free (buf);
3af9a47b
NC		 5598 return 0;
5599 }
5600 }
5601
5602 if (size == (end - start))
5603 break;
5604
5605 size *= 2;
5606 }
515ef31d
NC		 5607
5608 free (buf);
3af9a47b
NC		 5609 }
5610 }
5611
5612 return -1;
5613}
5614
5615char *
116c20d2 5616bfd_mach_o_core_file_failing_command (bfd *abfd)
3af9a47b
NC		 5617{
5618 unsigned char *buf = NULL;
5619 unsigned int len = 0;
452216ab 5620 int ret;
3af9a47b
NC		 5621
5622 ret = bfd_mach_o_core_fetch_environment (abfd, &buf, &len);
5623 if (ret < 0)
5624 return NULL;
5625
f075ee0c 5626 return (char *) buf;
3af9a47b
NC		 5627}
5628
5629int
116c20d2 5630bfd_mach_o_core_file_failing_signal (bfd *abfd ATTRIBUTE_UNUSED)
3af9a47b
NC		 5631{
5632 return 0;
5633}
5634
2ca7691a
TG		 5635static bfd_mach_o_uuid_command *
5636bfd_mach_o_lookup_uuid_command (bfd *abfd)
5637{
5638 bfd_mach_o_load_command *uuid_cmd;
5639 int ncmd = bfd_mach_o_lookup_command (abfd, BFD_MACH_O_LC_UUID, &uuid_cmd);
5640 if (ncmd != 1)
5641 return FALSE;
5642 return &uuid_cmd->command.uuid;
5643}
5644
5645/* Return true if ABFD is a dSYM file and its UUID matches UUID_CMD. */
5646
5647static bfd_boolean
5648bfd_mach_o_dsym_for_uuid_p (bfd *abfd, const bfd_mach_o_uuid_command *uuid_cmd)
5649{
5650 bfd_mach_o_uuid_command *dsym_uuid_cmd;
5651
5652 BFD_ASSERT (abfd);
5653 BFD_ASSERT (uuid_cmd);
5654
5655 if (!bfd_check_format (abfd, bfd_object))
5656 return FALSE;
5657
5658 if (bfd_get_flavour (abfd) != bfd_target_mach_o_flavour
5659 || bfd_mach_o_get_data (abfd) == NULL
5660 || bfd_mach_o_get_data (abfd)->header.filetype != BFD_MACH_O_MH_DSYM)
5661 return FALSE;
5662
5663 dsym_uuid_cmd = bfd_mach_o_lookup_uuid_command (abfd);
5664 if (dsym_uuid_cmd == NULL)
5665 return FALSE;
5666
5667 if (memcmp (uuid_cmd->uuid, dsym_uuid_cmd->uuid,
5668 sizeof (uuid_cmd->uuid)) != 0)
5669 return FALSE;
5670
5671 return TRUE;
5672}
5673
5674/* Find a BFD in DSYM_FILENAME which matches ARCH and UUID_CMD.
5675 The caller is responsible for closing the returned BFD object and
5676 its my_archive if the returned BFD is in a fat dSYM. */
5677
5678static bfd *
5679bfd_mach_o_find_dsym (const char *dsym_filename,
5680 const bfd_mach_o_uuid_command *uuid_cmd,
5681 const bfd_arch_info_type *arch)
5682{
5683 bfd *base_dsym_bfd, *dsym_bfd;
5684
5685 BFD_ASSERT (uuid_cmd);
5686
5687 base_dsym_bfd = bfd_openr (dsym_filename, NULL);
5688 if (base_dsym_bfd == NULL)
5689 return NULL;
5690
5691 dsym_bfd = bfd_mach_o_fat_extract (base_dsym_bfd, bfd_object, arch);
5692 if (bfd_mach_o_dsym_for_uuid_p (dsym_bfd, uuid_cmd))
5693 return dsym_bfd;
5694
5695 bfd_close (dsym_bfd);
5696 if (base_dsym_bfd != dsym_bfd)
5697 bfd_close (base_dsym_bfd);
5698
5699 return NULL;
5700}
5701
5702/* Return a BFD created from a dSYM file for ABFD.
5703 The caller is responsible for closing the returned BFD object, its
5704 filename, and its my_archive if the returned BFD is in a fat dSYM. */
5705
5706static bfd *
5707bfd_mach_o_follow_dsym (bfd *abfd)
5708{
5709 char *dsym_filename;
5710 bfd_mach_o_uuid_command *uuid_cmd;
5711 bfd *dsym_bfd, *base_bfd = abfd;
5712 const char *base_basename;
5713
5714 if (abfd == NULL || bfd_get_flavour (abfd) != bfd_target_mach_o_flavour)
5715 return NULL;
5716
b0cffb47 5717 if (abfd->my_archive && !bfd_is_thin_archive (abfd->my_archive))
2ca7691a
TG		 5718 base_bfd = abfd->my_archive;
5719 /* BFD may have been opened from a stream. */
5720 if (base_bfd->filename == NULL)
5721 {
5722 bfd_set_error (bfd_error_invalid_operation);
5723 return NULL;
5724 }
5725 base_basename = lbasename (base_bfd->filename);
5726
5727 uuid_cmd = bfd_mach_o_lookup_uuid_command (abfd);
5728 if (uuid_cmd == NULL)
5729 return NULL;
5730
5731 /* TODO: We assume the DWARF file has the same as the binary's.
5732 It seems apple's GDB checks all files in the dSYM bundle directory.
5733 http://opensource.apple.com/source/gdb/gdb-1708/src/gdb/macosx/macosx-tdep.c
5734 */
5735 dsym_filename = (char *)bfd_malloc (strlen (base_bfd->filename)
5736 + strlen (dsym_subdir) + 1
5737 + strlen (base_basename) + 1);
5738 sprintf (dsym_filename, "%s%s/%s",
5739 base_bfd->filename, dsym_subdir, base_basename);
5740
5741 dsym_bfd = bfd_mach_o_find_dsym (dsym_filename, uuid_cmd,
5742 bfd_get_arch_info (abfd));
5743 if (dsym_bfd == NULL)
5744 free (dsym_filename);
5745
5746 return dsym_bfd;
5747}
5748
d9071b0c
TG		 5749bfd_boolean
5750bfd_mach_o_find_nearest_line (bfd *abfd,
d9071b0c 5751 asymbol **symbols,
fb167eb2 5752 asection *section,
d9071b0c
TG		 5753 bfd_vma offset,
5754 const char **filename_ptr,
5755 const char **functionname_ptr,
fb167eb2
AM		 5756 unsigned int *line_ptr,
5757 unsigned int *discriminator_ptr)
d9071b0c
TG		 5758{
5759 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
2ca7691a 5760 if (mdata == NULL)
d9071b0c 5761 return FALSE;
2ca7691a
TG		 5762 switch (mdata->header.filetype)
5763 {
5764 case BFD_MACH_O_MH_OBJECT:
5765 break;
5766 case BFD_MACH_O_MH_EXECUTE:
5767 case BFD_MACH_O_MH_DYLIB:
5768 case BFD_MACH_O_MH_BUNDLE:
5769 case BFD_MACH_O_MH_KEXT_BUNDLE:
5770 if (mdata->dwarf2_find_line_info == NULL)
5771 {
5772 mdata->dsym_bfd = bfd_mach_o_follow_dsym (abfd);
5773 /* When we couldn't find dSYM for this binary, we look for
5774 the debug information in the binary itself. In this way,
5775 we won't try finding separated dSYM again because
5776 mdata->dwarf2_find_line_info will be filled. */
5777 if (! mdata->dsym_bfd)
5778 break;
5779 if (! _bfd_dwarf2_slurp_debug_info (abfd, mdata->dsym_bfd,
5780 dwarf_debug_sections, symbols,
93ee1e36
AM		 5781 &mdata->dwarf2_find_line_info,
5782 FALSE))
2ca7691a
TG		 5783 return FALSE;
5784 }
5785 break;
5786 default:
5787 return FALSE;
5788 }
fb167eb2
AM		 5789 return _bfd_dwarf2_find_nearest_line (abfd, symbols, NULL, section, offset,
5790 filename_ptr, functionname_ptr,
5791 line_ptr, discriminator_ptr,
5792 dwarf_debug_sections, 0,
5793 &mdata->dwarf2_find_line_info);
d9071b0c
TG		 5794}
5795
5796bfd_boolean
5797bfd_mach_o_close_and_cleanup (bfd *abfd)
5798{
5799 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
5800 if (bfd_get_format (abfd) == bfd_object && mdata != NULL)
4434114c
TG		 5801 {
5802 _bfd_dwarf2_cleanup_debug_info (abfd, &mdata->dwarf2_find_line_info);
5803 bfd_mach_o_free_cached_info (abfd);
2ca7691a
TG		 5804 if (mdata->dsym_bfd != NULL)
5805 {
5806 bfd *fat_bfd = mdata->dsym_bfd->my_archive;
cf466c2a
NC		 5807#if 0
5808 /* FIXME: PR 19435: This calculation to find the memory allocated by
5809 bfd_mach_o_follow_dsym for the filename does not always end up
5810 selecting the correct pointer. Unfortunately this problem is
5811 very hard to reproduce on a non Mach-O native system, so until it
5812 can be traced and fixed on such a system, this code will remain
5813 commented out. This does mean that there will be a memory leak,
5814 but it is small, and happens when we are closing down, so it
c244074c 5815 should not matter too much. */
2ca7691a
TG		 5816 char *dsym_filename = (char *)(fat_bfd
5817 ? fat_bfd->filename
5818 : mdata->dsym_bfd->filename);
cf466c2a 5819#endif
2ca7691a
TG		 5820 bfd_close (mdata->dsym_bfd);
5821 mdata->dsym_bfd = NULL;
5822 if (fat_bfd)
5823 bfd_close (fat_bfd);
cf466c2a 5824#if 0
2ca7691a 5825 free (dsym_filename);
cf466c2a 5826#endif
2ca7691a 5827 }
4434114c 5828 }
dff55db0 5829
d9071b0c
TG		 5830 return _bfd_generic_close_and_cleanup (abfd);
5831}
5832
dff55db0
TG		 5833bfd_boolean bfd_mach_o_free_cached_info (bfd *abfd)
5834{
5835 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
5836 asection *asect;
5837 free (mdata->dyn_reloc_cache);
5838 mdata->dyn_reloc_cache = NULL;
5839 for (asect = abfd->sections; asect != NULL; asect = asect->next)
5840 {
5841 free (asect->relocation);
5842 asect->relocation = NULL;
5843 }
5844
5845 return TRUE;
5846}
5847
68ffbac6 5848#define bfd_mach_o_bfd_reloc_type_lookup _bfd_norelocs_bfd_reloc_type_lookup
92bc0e80
TG		 5849#define bfd_mach_o_bfd_reloc_name_lookup _bfd_norelocs_bfd_reloc_name_lookup
5850
bcb51645 5851#define bfd_mach_o_canonicalize_one_reloc NULL
92bc0e80 5852#define bfd_mach_o_swap_reloc_out NULL
b32e07d7 5853#define bfd_mach_o_print_thread NULL
a4551119 5854#define bfd_mach_o_tgt_seg_table NULL
ab76eeaf 5855#define bfd_mach_o_section_type_valid_for_tgt NULL
92bc0e80 5856
116c20d2
NC		 5857#define TARGET_NAME mach_o_be_vec
5858#define TARGET_STRING "mach-o-be"
42fa0891 5859#define TARGET_ARCHITECTURE bfd_arch_unknown
4384b284 5860#define TARGET_PAGESIZE 1
116c20d2
NC		 5861#define TARGET_BIG_ENDIAN 1
5862#define TARGET_ARCHIVE 0
b93a1992 5863#define TARGET_PRIORITY 1
3af9a47b
NC		 5864#include "mach-o-target.c"
5865
5866#undef TARGET_NAME
5867#undef TARGET_STRING
42fa0891 5868#undef TARGET_ARCHITECTURE
4384b284 5869#undef TARGET_PAGESIZE
3af9a47b
NC		 5870#undef TARGET_BIG_ENDIAN
5871#undef TARGET_ARCHIVE
b93a1992 5872#undef TARGET_PRIORITY
3af9a47b 5873
116c20d2
NC		 5874#define TARGET_NAME mach_o_le_vec
5875#define TARGET_STRING "mach-o-le"
42fa0891 5876#define TARGET_ARCHITECTURE bfd_arch_unknown
4384b284 5877#define TARGET_PAGESIZE 1
116c20d2
NC		 5878#define TARGET_BIG_ENDIAN 0
5879#define TARGET_ARCHIVE 0
b93a1992 5880#define TARGET_PRIORITY 1
3af9a47b
NC		 5881
5882#include "mach-o-target.c"
5883
5884#undef TARGET_NAME
5885#undef TARGET_STRING
42fa0891 5886#undef TARGET_ARCHITECTURE
4384b284 5887#undef TARGET_PAGESIZE
3af9a47b
NC		 5888#undef TARGET_BIG_ENDIAN
5889#undef TARGET_ARCHIVE
b93a1992 5890#undef TARGET_PRIORITY
3af9a47b 5891
8f95b6e4
TG		 5892/* Not yet handled: creating an archive. */
5893#define bfd_mach_o_mkarchive _bfd_noarchive_mkarchive
5894
47daa70f
TG		 5895#define bfd_mach_o_close_and_cleanup bfd_true
5896
8f95b6e4 5897/* Not used. */
15bbba8d 5898#define bfd_mach_o_generic_stat_arch_elt bfd_mach_o_fat_stat_arch_elt
47daa70f
TG		 5899#define bfd_mach_o_openr_next_archived_file bfd_mach_o_fat_openr_next_archived_file
5900#define bfd_mach_o_archive_p bfd_mach_o_fat_archive_p
8f95b6e4 5901
116c20d2
NC		 5902#define TARGET_NAME mach_o_fat_vec
5903#define TARGET_STRING "mach-o-fat"
42fa0891 5904#define TARGET_ARCHITECTURE bfd_arch_unknown
4384b284 5905#define TARGET_PAGESIZE 1
116c20d2
NC		 5906#define TARGET_BIG_ENDIAN 1
5907#define TARGET_ARCHIVE 1
b93a1992 5908#define TARGET_PRIORITY 0
3af9a47b
NC		 5909
5910#include "mach-o-target.c"
5911
5912#undef TARGET_NAME
5913#undef TARGET_STRING
42fa0891 5914#undef TARGET_ARCHITECTURE
4384b284 5915#undef TARGET_PAGESIZE
3af9a47b
NC		 5916#undef TARGET_BIG_ENDIAN
5917#undef TARGET_ARCHIVE
b93a1992 5918#undef TARGET_PRIORITY
GDB Binutils - Deliverables
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