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Remove bfd stub function casts.
[deliverable/binutils-gdb.git] / bfd / mach-o.c
CommitLineData
3af9a47b 1/* Mach-O support for BFD.
219d1afa 2 Copyright (C) 1999-2018 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++)
07d6d2b8 318 if (strncmp (sec->mach_o_name, sectname,
a4551119 319 BFD_MACH_O_SECTNAME_SIZE) == 0)
07d6d2b8 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 434bfd_mach_o_convert_section_name_to_mach_o (bfd *abfd ATTRIBUTE_UNUSED,
07d6d2b8
AM		 435 asection *sect,
436 bfd_mach_o_section *section)
154a1ee5 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)
07d6d2b8
AM		 475 {
476 memcpy (section->segname, name, seglen);
477 section->segname[seglen] = 0;
478 memcpy (section->sectname, dot + 1, seclen);
479 section->sectname[seclen] = 0;
480 return NULL;
481 }
154a1ee5
TG		 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
07d6d2b8 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,
07d6d2b8
AM		 797 long symcount ATTRIBUTE_UNUSED,
798 asymbol **syms ATTRIBUTE_UNUSED,
799 long dynsymcount ATTRIBUTE_UNUSED,
800 asymbol **dynsyms ATTRIBUTE_UNUSED,
801 asymbol **ret)
b2b62060
TG		 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 855 switch (sec->flags & BFD_MACH_O_SECTION_TYPE_MASK)
07d6d2b8
AM		 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:
860 /* Only these sections have indirect symbols. */
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
07d6d2b8
AM		 870 for (j = first; j < last; j++)
871 {
872 unsigned int isym = dysymtab->indirect_syms[j];
b2b62060 873
896ca098
NC		 874 /* PR 17512: file: 04d64d9b. */
875 if (((char *) s) + sizeof (* s) > s_end)
876 goto fail;
877
07d6d2b8
AM		 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
07d6d2b8
AM		 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;
b2b62060 888
07d6d2b8
AM		 889 s->name = names;
890 len = strlen (sym);
896ca098
NC		 891 /* PR 17512: file: 47dfd4d2. */
892 if (names + len >= s_end)
893 goto fail;
07d6d2b8
AM		 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;
07d6d2b8
AM		 899 memcpy (names, stub, sizeof (stub));
900 names += sizeof (stub);
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 }
b2b62060
TG		 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:
07d6d2b8
AM		 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 977 fprintf (file, " %02x %-6s %02x %04x",
07d6d2b8 978 asym->n_type, name, asym->n_sect, asym->n_desc);
92bc0e80
TG		 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)
07d6d2b8
AM		 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 }
0b2de107
TG		 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 1157 BFD_ASSERT (cmd->flavours[i].offset ==
07d6d2b8 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
07d6d2b8 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,
07d6d2b8 1294 asection *asect)
92bc0e80
TG		 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
07d6d2b8 1377 the vma of the section. */
bcb51645
TG		 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 1429 for (j = 0; j < mdata->nsects; j++)
07d6d2b8
AM		 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 1454 /* The value and info fields have to be extracted dependent on target
07d6d2b8 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,
07d6d2b8
AM		 1472 unsigned long count,
1473 arelent *res, asymbol **syms)
b32e07d7 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 1498 if (!(*bed->_bfd_mach_o_canonicalize_one_reloc)(abfd, &native_relocs[i],
ca4cf9b9 1499 &res[i], syms, res))
07d6d2b8 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,
07d6d2b8 1511 arelent **rels, asymbol **syms)
b32e07d7
TG		 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)
07d6d2b8 1530 return -1;
dff55db0
TG		 1531
1532 if (bfd_mach_o_canonicalize_relocs (abfd, asect->rel_filepos,
07d6d2b8
AM		 1533 asect->reloc_count, res, syms) < 0)
1534 {
1535 free (res);
1536 return -1;
1537 }
dff55db0 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,
07d6d2b8 1562 struct bfd_symbol **syms)
b32e07d7
TG		 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 1585 res = bfd_malloc ((dysymtab->nextrel + dysymtab->nlocrel)
07d6d2b8 1586 * sizeof (arelent));
dff55db0 1587 if (res == NULL)
07d6d2b8 1588 return -1;
b32e07d7 1589
dff55db0 1590 if (bfd_mach_o_canonicalize_relocs (abfd, dysymtab->extreloff,
07d6d2b8
AM		 1591 dysymtab->nextrel, res, syms) < 0)
1592 {
1593 free (res);
1594 return -1;
1595 }
dff55db0
TG		 1596
1597 if (bfd_mach_o_canonicalize_relocs (abfd, dysymtab->locreloff,
07d6d2b8
AM		 1598 dysymtab->nlocrel,
1599 res + dysymtab->nextrel, syms) < 0)
1600 {
1601 free (res);
1602 return -1;
1603 }
dff55db0
TG		 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))
07d6d2b8 1678 return FALSE;
92bc0e80
TG		 1679
1680 /* Lower the relocation info. */
1681 if (pinfo->r_scattered)
07d6d2b8
AM		 1682 {
1683 unsigned long v;
1684
1685 v = BFD_MACH_O_SR_SCATTERED
1686 | (pinfo->r_pcrel ? BFD_MACH_O_SR_PCREL : 0)
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);
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);
1693 }
92bc0e80 1694 else
07d6d2b8
AM		 1695 {
1696 bfd_put_32 (abfd, pinfo->r_address, raw.r_address);
1697 bfd_mach_o_swap_out_non_scattered_reloc (abfd, raw.r_symbolnum,
19765f52 1698 pinfo);
07d6d2b8 1699 }
92bc0e80 1700
46d1c23b 1701 if (bfd_bwrite (&raw, BFD_MACH_O_RELENT_SIZE, abfd)
07d6d2b8
AM		 1702 != BFD_MACH_O_RELENT_SIZE)
1703 return FALSE;
92bc0e80
TG		 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. */
07d6d2b8 1856 str_index = 0;
c2f09c75 1857 else
07d6d2b8
AM		 1858 {
1859 str_index = _bfd_stringtab_add (strtab, s->symbol.name, TRUE, FALSE);
7f307238 1860
07d6d2b8
AM		 1861 if (str_index == (bfd_size_type) -1)
1862 goto err;
1863 }
46d1c23b 1864
c2f09c75 1865 if (wide)
07d6d2b8
AM		 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
07d6d2b8
AM		 1880 {
1881 struct mach_o_nlist_external raw;
116c20d2 1882
07d6d2b8
AM		 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);
46d1c23b 1889
07d6d2b8
AM		 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
535b785f 1901 if (!_bfd_stringtab_emit (abfd, strtab))
c2f09c75 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)
07d6d2b8 2037 return FALSE;
c9ffd2ea
TG		 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)
07d6d2b8 2061 cmd->indirect_syms[n] = BFD_MACH_O_INDIRECT_SYM_LOCAL;
c9ffd2ea
TG		 2062 else if (isyms[j]->symbol.section == bfd_abs_section_ptr
2063 && ! (isyms[j]->n_type & BFD_MACH_O_N_EXT))
07d6d2b8 2064 cmd->indirect_syms[n] = BFD_MACH_O_INDIRECT_SYM_LOCAL
c9ffd2ea
TG		 2065 | BFD_MACH_O_INDIRECT_SYM_ABS;
2066 else
07d6d2b8 2067 cmd->indirect_syms[n] = isyms[j]->symbol.udata.i;
c9ffd2ea
TG		 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)
07d6d2b8 2302 return -1;
7f307238 2303 if (sa->symbol.udata.i > sb->symbol.udata.i)
07d6d2b8 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)
07d6d2b8
AM		 2352 {
2353 /* No symbol information has been set - therefore determine
2354 it from the bfd symbol flags/info. */
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;
2362 /* mach-o automatically makes undefined symbols extern. */
7f307238 2363 s->n_type |= BFD_MACH_O_N_EXT;
b22161d6 2364 s->symbol.flags |= BSF_GLOBAL;
07d6d2b8
AM		 2365 }
2366 else if (s->symbol.section == bfd_com_section_ptr)
b22161d6 2367 {
07d6d2b8
AM		 2368 s->n_type = BFD_MACH_O_N_UNDF | BFD_MACH_O_N_EXT;
2369 s->symbol.flags |= BSF_GLOBAL;
2370 }
2371 else
2372 s->n_type = BFD_MACH_O_N_SECT;
68ffbac6 2373
07d6d2b8
AM		 2374 if (s->symbol.flags & BSF_GLOBAL)
2375 s->n_type |= BFD_MACH_O_N_EXT;
2376 }
92bc0e80 2377
7f307238 2378 /* Put the section index in, where required. */
68588f95 2379 if ((s->symbol.section != bfd_abs_section_ptr
07d6d2b8
AM		 2380 && s->symbol.section != bfd_und_section_ptr
2381 && s->symbol.section != bfd_com_section_ptr)
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
d42c267e
AM		 2531 (_("unable to allocate data for load command %#x"),
2532 cmd->type);
c9ffd2ea
TG		 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
07d6d2b8 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
d42c267e
AM		 2636 (_("unable to write unknown load command %#x"),
2637 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,
07d6d2b8 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
07d6d2b8 2710 || ((s->flags & BFD_MACH_O_SECTION_TYPE_MASK)
c9ffd2ea 2711 == BFD_MACH_O_S_GB_ZEROFILL))
07d6d2b8 2712 continue;
e5081f2f 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);
07d6d2b8
AM		 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. */
07d6d2b8 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)
07d6d2b8 2774 {
c9ffd2ea 2775 /* Clear nreloc and reloff if there is no relocs. */
bb76d940
IS		 2776 ms->reloff = 0;
2777 continue;
07d6d2b8 2778 }
bb76d940
IS		 2779 sec->rel_filepos = mdata->filelen;
2780 ms->reloff = sec->rel_filepos;
2781 mdata->filelen += sec->reloc_count * BFD_MACH_O_RELENT_SIZE;
2782 }
7f307238
IS		 2783
2784 return TRUE;
2785}
2786
c9ffd2ea
TG		 2787static bfd_boolean
2788bfd_mach_o_build_exec_seg_command (bfd *abfd, bfd_mach_o_segment_command *seg)
50d10658 2789{
c9ffd2ea 2790 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
50d10658 2791 unsigned int i;
c9ffd2ea
TG		 2792 bfd_vma pagemask = bfd_mach_o_get_backend_data (abfd)->page_size - 1;
2793 bfd_vma vma;
2794 bfd_mach_o_section *s;
2795
2796 seg->vmsize = 0;
50d10658 2797
c9ffd2ea
TG		 2798 seg->fileoff = mdata->filelen;
2799 seg->maxprot = 0;
2800 seg->initprot = 0;
2801 seg->flags = 0;
2802
2803 /* Append sections to the segment. We assume they are properly ordered
2804 by vma (but we check that). */
2805 vma = 0;
50d10658
IS		 2806 for (i = 0; i < mdata->nsects; ++i)
2807 {
c9ffd2ea 2808 s = mdata->sections[i];
50d10658 2809
c9ffd2ea
TG		 2810 /* Consider only sections for this segment. */
2811 if (strcmp (seg->segname, s->segname) != 0)
2812 continue;
50d10658 2813
c9ffd2ea 2814 bfd_mach_o_append_section_to_segment (seg, s);
7f307238 2815
86eafac0
NC		 2816 if (s->addr < vma)
2817 {
4eca0228 2818 _bfd_error_handler
695344c0 2819 /* xgettext:c-format */
d42c267e
AM		 2820 (_("section address (%#Lx) below start of segment (%#Lx)"),
2821 s->addr, vma);
86eafac0
NC		 2822 return FALSE;
2823 }
2824
c9ffd2ea 2825 vma = s->addr + s->size;
7f307238
IS		 2826 }
2827
c9ffd2ea
TG		 2828 /* Set segment file offset: make it page aligned. */
2829 vma = seg->sect_head->addr;
2830 seg->vmaddr = vma & ~pagemask;
2831 if ((mdata->filelen & pagemask) > (vma & pagemask))
2832 mdata->filelen += pagemask + 1;
2833 seg->fileoff = mdata->filelen & ~pagemask;
2834 mdata->filelen = seg->fileoff + (vma & pagemask);
7f307238 2835
c9ffd2ea
TG		 2836 /* Set section file offset. */
2837 for (s = seg->sect_head; s != NULL; s = s->next)
7f307238 2838 {
c9ffd2ea
TG		 2839 asection *sec = s->bfdsection;
2840 flagword flags = bfd_get_section_flags (abfd, sec);
b22161d6 2841
c9ffd2ea
TG		 2842 /* Adjust segment size. */
2843 seg->vmsize = FILE_ALIGN (seg->vmsize, s->align);
2844 seg->vmsize += s->size;
2845
2846 /* File offset and length. */
2847 seg->filesize = FILE_ALIGN (seg->filesize, s->align);
2848
2849 if ((s->flags & BFD_MACH_O_SECTION_TYPE_MASK) != BFD_MACH_O_S_ZEROFILL
07d6d2b8 2850 && ((s->flags & BFD_MACH_O_SECTION_TYPE_MASK)
c9ffd2ea 2851 != BFD_MACH_O_S_GB_ZEROFILL))
b22161d6 2852 {
c9ffd2ea
TG		 2853 mdata->filelen = FILE_ALIGN (mdata->filelen, s->align);
2854
2855 s->offset = mdata->filelen;
2856 s->bfdsection->filepos = s->offset;
2857
2858 seg->filesize += s->size;
2859 mdata->filelen += s->size;
b22161d6 2860 }
c9ffd2ea 2861 else
b22161d6 2862 {
c9ffd2ea
TG		 2863 s->offset = 0;
2864 s->bfdsection->filepos = 0;
2865 }
2866
2867 /* Set protection. */
2868 if (flags & SEC_LOAD)
2869 {
2870 if (flags & SEC_CODE)
2871 seg->initprot |= BFD_MACH_O_PROT_READ | BFD_MACH_O_PROT_EXECUTE;
2872 if ((flags & (SEC_DATA | SEC_READONLY)) == SEC_DATA)
2873 seg->initprot |= BFD_MACH_O_PROT_WRITE | BFD_MACH_O_PROT_READ;
b22161d6 2874 }
c9ffd2ea
TG		 2875
2876 /* Relocs shouldn't appear in non-object files. */
2877 if (s->bfdsection->reloc_count != 0)
2878 return FALSE;
b22161d6 2879 }
c9ffd2ea
TG		 2880
2881 /* Set maxprot. */
2882 if (seg->initprot != 0)
2883 seg->maxprot = BFD_MACH_O_PROT_READ | BFD_MACH_O_PROT_WRITE
2884 | BFD_MACH_O_PROT_EXECUTE;
b22161d6 2885 else
c9ffd2ea 2886 seg->maxprot = 0;
b22161d6 2887
c9ffd2ea
TG		 2888 /* Round segment size (and file size). */
2889 seg->vmsize = (seg->vmsize + pagemask) & ~pagemask;
2890 seg->filesize = (seg->filesize + pagemask) & ~pagemask;
2891 mdata->filelen = (mdata->filelen + pagemask) & ~pagemask;
7f307238 2892
c9ffd2ea
TG		 2893 return TRUE;
2894}
68ffbac6 2895
c9ffd2ea
TG		 2896/* Layout the commands: set commands size and offset, set ncmds and sizeofcmds
2897 fields in header. */
68ffbac6 2898
86eafac0 2899static bfd_boolean
c9ffd2ea
TG		 2900bfd_mach_o_layout_commands (bfd_mach_o_data_struct *mdata)
2901{
2902 unsigned wide = mach_o_wide_p (&mdata->header);
2903 unsigned int hdrlen;
2904 ufile_ptr offset;
2905 bfd_mach_o_load_command *cmd;
2906 unsigned int align;
86eafac0 2907 bfd_boolean ret = TRUE;
c9ffd2ea
TG		 2908
2909 hdrlen = wide ? BFD_MACH_O_HEADER_64_SIZE : BFD_MACH_O_HEADER_SIZE;
2910 align = wide ? 8 - 1 : 4 - 1;
2911 offset = hdrlen;
2912 mdata->header.ncmds = 0;
50d10658 2913
c9ffd2ea
TG		 2914 for (cmd = mdata->first_command; cmd; cmd = cmd->next)
2915 {
2916 mdata->header.ncmds++;
2917 cmd->offset = offset;
68ffbac6 2918
c9ffd2ea
TG		 2919 switch (cmd->type)
2920 {
2921 case BFD_MACH_O_LC_SEGMENT_64:
2922 cmd->len = BFD_MACH_O_LC_SEGMENT_64_SIZE
2923 + BFD_MACH_O_SECTION_64_SIZE * cmd->command.segment.nsects;
2924 break;
2925 case BFD_MACH_O_LC_SEGMENT:
2926 cmd->len = BFD_MACH_O_LC_SEGMENT_SIZE
2927 + BFD_MACH_O_SECTION_SIZE * cmd->command.segment.nsects;
2928 break;
2929 case BFD_MACH_O_LC_SYMTAB:
2930 cmd->len = sizeof (struct mach_o_symtab_command_external)
2931 + BFD_MACH_O_LC_SIZE;
2932 break;
2933 case BFD_MACH_O_LC_DYSYMTAB:
2934 cmd->len = sizeof (struct mach_o_dysymtab_command_external)
2935 + BFD_MACH_O_LC_SIZE;
2936 break;
2937 case BFD_MACH_O_LC_LOAD_DYLIB:
2938 cmd->len = sizeof (struct mach_o_dylib_command_external)
2939 + BFD_MACH_O_LC_SIZE;
2940 cmd->command.dylib.name_offset = cmd->len;
2941 cmd->len += strlen (cmd->command.dylib.name_str);
2942 cmd->len = (cmd->len + align) & ~align;
2943 break;
2944 case BFD_MACH_O_LC_LOAD_DYLINKER:
2945 cmd->len = sizeof (struct mach_o_str_command_external)
2946 + BFD_MACH_O_LC_SIZE;
2947 cmd->command.dylinker.name_offset = cmd->len;
2948 cmd->len += strlen (cmd->command.dylinker.name_str);
2949 cmd->len = (cmd->len + align) & ~align;
2950 break;
2951 case BFD_MACH_O_LC_MAIN:
2952 cmd->len = sizeof (struct mach_o_entry_point_command_external)
2953 + BFD_MACH_O_LC_SIZE;
2954 break;
2955 case BFD_MACH_O_LC_DYLD_INFO:
2956 cmd->len = sizeof (struct mach_o_dyld_info_command_external)
2957 + BFD_MACH_O_LC_SIZE;
2958 break;
2959 default:
4eca0228 2960 _bfd_error_handler
d42c267e
AM		 2961 (_("unable to layout unknown load command %#x"),
2962 cmd->type);
86eafac0 2963 ret = FALSE;
c9ffd2ea 2964 break;
7f307238 2965 }
c9ffd2ea
TG		 2966
2967 BFD_ASSERT (cmd->len % (align + 1) == 0);
2968 offset += cmd->len;
7f307238 2969 }
c9ffd2ea
TG		 2970 mdata->header.sizeofcmds = offset - hdrlen;
2971 mdata->filelen = offset;
86eafac0
NC		 2972
2973 return ret;
c9ffd2ea 2974}
7f307238 2975
c9ffd2ea
TG		 2976/* Subroutine of bfd_mach_o_build_commands: set type, name and nsects of a
2977 segment. */
2978
2979static void
2980bfd_mach_o_init_segment (bfd_mach_o_data_struct *mdata,
2981 bfd_mach_o_load_command *cmd,
2982 const char *segname, unsigned int nbr_sect)
2983{
2984 bfd_mach_o_segment_command *seg = &cmd->command.segment;
2985 unsigned wide = mach_o_wide_p (&mdata->header);
2986
2987 /* Init segment command. */
2988 cmd->type = wide ? BFD_MACH_O_LC_SEGMENT_64 : BFD_MACH_O_LC_SEGMENT;
2989 cmd->type_required = FALSE;
2990
2991 strcpy (seg->segname, segname);
2992 seg->nsects = nbr_sect;
2993
2994 seg->vmaddr = 0;
2995 seg->vmsize = 0;
2996
2997 seg->fileoff = 0;
2998 seg->filesize = 0;
2999 seg->maxprot = 0;
3000 seg->initprot = 0;
3001 seg->flags = 0;
3002 seg->sect_head = NULL;
3003 seg->sect_tail = NULL;
7f307238
IS		 3004}
3005
3006/* Build Mach-O load commands (currently assuming an MH_OBJECT file).
3007 TODO: Other file formats, rebuilding symtab/dysymtab commands for strip
3008 and copy functionality. */
154a1ee5
TG		 3009
3010bfd_boolean
3011bfd_mach_o_build_commands (bfd *abfd)
3012{
046b007d 3013 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
bbd56171 3014 unsigned wide = mach_o_wide_p (&mdata->header);
c9ffd2ea
TG		 3015 unsigned int nbr_segcmd = 0;
3016 bfd_mach_o_load_command *commands;
3017 unsigned int nbr_commands;
bbd56171
IS		 3018 int symtab_idx = -1;
3019 int dysymtab_idx = -1;
c9ffd2ea
TG		 3020 int main_idx = -1;
3021 unsigned int i;
154a1ee5 3022
c9ffd2ea
TG		 3023 /* Return now if already built. */
3024 if (mdata->header.ncmds != 0)
3025 return TRUE;
154a1ee5 3026
7f307238 3027 /* Fill in the file type, if not already set. */
7f307238 3028 if (mdata->header.filetype == 0)
154a1ee5 3029 {
7f307238 3030 if (abfd->flags & EXEC_P)
07d6d2b8 3031 mdata->header.filetype = BFD_MACH_O_MH_EXECUTE;
7f307238 3032 else if (abfd->flags & DYNAMIC)
07d6d2b8 3033 mdata->header.filetype = BFD_MACH_O_MH_DYLIB;
7f307238 3034 else
07d6d2b8 3035 mdata->header.filetype = BFD_MACH_O_MH_OBJECT;
154a1ee5 3036 }
7f307238
IS		 3037
3038 /* If hasn't already been done, flatten sections list, and sort
3039 if/when required. Must be done before the symbol table is adjusted,
3040 since that depends on properly numbered sections. */
3041 if (mdata->nsects == 0 || mdata->sections == NULL)
3042 if (! bfd_mach_o_mangle_sections (abfd, mdata))
3043 return FALSE;
3044
3045 /* Order the symbol table, fill-in/check mach-o specific fields and
3046 partition out any indirect symbols. */
b22161d6 3047 if (!bfd_mach_o_mangle_symbols (abfd))
7f307238
IS		 3048 return FALSE;
3049
c9ffd2ea
TG		 3050 /* Segment commands. */
3051 if (mdata->header.filetype == BFD_MACH_O_MH_OBJECT)
3052 {
3053 /* Only one segment for all the sections. But the segment is
3054 optional if there is no sections. */
3055 nbr_segcmd = (mdata->nsects > 0) ? 1 : 0;
3056 }
3057 else
3058 {
3059 bfd_mach_o_section *prev_sect = NULL;
bbd56171 3060
c9ffd2ea
TG		 3061 /* One pagezero segment and one linkedit segment. */
3062 nbr_segcmd = 2;
bbd56171 3063
c9ffd2ea
TG		 3064 /* Create one segment for associated segment name in sections.
3065 Assume that sections with the same segment name are consecutive. */
3066 for (i = 0; i < mdata->nsects; i++)
3067 {
3068 bfd_mach_o_section *this_sect = mdata->sections[i];
bbd56171 3069
c9ffd2ea
TG		 3070 if (prev_sect == NULL
3071 || strcmp (prev_sect->segname, this_sect->segname) != 0)
3072 {
3073 nbr_segcmd++;
3074 prev_sect = this_sect;
3075 }
3076 }
154a1ee5 3077 }
154a1ee5 3078
c9ffd2ea
TG		 3079 nbr_commands = nbr_segcmd;
3080
3081 /* One command for the symbol table (only if there are symbols. */
7f307238 3082 if (bfd_get_symcount (abfd) > 0)
c9ffd2ea 3083 symtab_idx = nbr_commands++;
c2f09c75 3084
bbd56171
IS		 3085 /* FIXME:
3086 This is a rather crude test for whether we should build a dysymtab. */
3087 if (bfd_mach_o_should_emit_dysymtab ()
3088 && bfd_get_symcount (abfd))
3089 {
bbd56171
IS		 3090 /* If there should be a case where a dysymtab could be emitted without
3091 a symtab (seems improbable), this would need amending. */
c9ffd2ea 3092 dysymtab_idx = nbr_commands++;
bbd56171 3093 }
154a1ee5 3094
c9ffd2ea
TG		 3095 /* Add an entry point command. */
3096 if (mdata->header.filetype == BFD_MACH_O_MH_EXECUTE
3097 && bfd_get_start_address (abfd) != 0)
3098 main_idx = nbr_commands++;
c2f09c75 3099
bbd56171 3100 /* Well, we must have a header, at least. */
c9ffd2ea 3101 mdata->filelen = wide ? BFD_MACH_O_HEADER_64_SIZE : BFD_MACH_O_HEADER_SIZE;
f1bde64c 3102
bbd56171 3103 /* A bit unusual, but no content is valid;
7f307238 3104 as -n empty.s -o empty.o */
c9ffd2ea
TG		 3105 if (nbr_commands == 0)
3106 {
3107 /* Layout commands (well none...) and set headers command fields. */
86eafac0 3108 return bfd_mach_o_layout_commands (mdata);
c9ffd2ea 3109 }
f1bde64c 3110
c9ffd2ea
TG		 3111 /* Create commands for segments (and symtabs), prepend them. */
3112 commands = bfd_zalloc (abfd, nbr_commands * sizeof (bfd_mach_o_load_command));
3113 if (commands == NULL)
7f307238 3114 return FALSE;
c9ffd2ea
TG		 3115 for (i = 0; i < nbr_commands - 1; i++)
3116 commands[i].next = &commands[i + 1];
3117 commands[nbr_commands - 1].next = mdata->first_command;
3118 if (mdata->first_command == NULL)
3119 mdata->last_command = &commands[nbr_commands - 1];
3120 mdata->first_command = &commands[0];
3121
3122 if (mdata->header.filetype == BFD_MACH_O_MH_OBJECT && nbr_segcmd != 0)
3123 {
3124 /* For object file, there is only one segment. */
3125 bfd_mach_o_init_segment (mdata, &commands[0], "", mdata->nsects);
3126 }
3127 else if (nbr_segcmd != 0)
68ffbac6 3128 {
c9ffd2ea 3129 bfd_mach_o_load_command *cmd;
7f307238 3130
c9ffd2ea 3131 BFD_ASSERT (nbr_segcmd >= 2);
7f307238 3132
c9ffd2ea
TG		 3133 /* The pagezero. */
3134 cmd = &commands[0];
3135 bfd_mach_o_init_segment (mdata, cmd, "__PAGEZERO", 0);
3136
3137 /* Segments from sections. */
3138 cmd++;
3139 for (i = 0; i < mdata->nsects;)
7f307238 3140 {
c9ffd2ea
TG		 3141 const char *segname = mdata->sections[i]->segname;
3142 unsigned int nbr_sect = 1;
3143
3144 /* Count number of sections for this segment. */
3145 for (i++; i < mdata->nsects; i++)
3146 if (strcmp (mdata->sections[i]->segname, segname) == 0)
3147 nbr_sect++;
3148 else
3149 break;
3150
3151 bfd_mach_o_init_segment (mdata, cmd, segname, nbr_sect);
3152 cmd++;
7f307238 3153 }
bbd56171 3154
c9ffd2ea
TG		 3155 /* The linkedit. */
3156 bfd_mach_o_init_segment (mdata, cmd, "__LINKEDIT", 0);
7f307238 3157 }
f1bde64c 3158
bbd56171 3159 if (symtab_idx >= 0)
7f307238
IS		 3160 {
3161 /* Init symtab command. */
c9ffd2ea 3162 bfd_mach_o_load_command *cmd = &commands[symtab_idx];
68ffbac6 3163
bbd56171 3164 cmd->type = BFD_MACH_O_LC_SYMTAB;
bbd56171 3165 cmd->type_required = FALSE;
7f307238 3166 }
154a1ee5 3167
bbd56171
IS		 3168 /* If required, setup symtab command, see comment above about the quality
3169 of this test. */
3170 if (dysymtab_idx >= 0)
7f307238 3171 {
c9ffd2ea 3172 bfd_mach_o_load_command *cmd = &commands[dysymtab_idx];
bbd56171 3173
7f307238 3174 cmd->type = BFD_MACH_O_LC_DYSYMTAB;
7f307238 3175 cmd->type_required = FALSE;
c9ffd2ea
TG		 3176 }
3177
3178 /* Create the main command. */
3179 if (main_idx >= 0)
3180 {
3181 bfd_mach_o_load_command *cmd = &commands[main_idx];
7f307238 3182
c9ffd2ea
TG		 3183 cmd->type = BFD_MACH_O_LC_MAIN;
3184 cmd->type_required = TRUE;
3185
3186 cmd->command.main.entryoff = 0;
3187 cmd->command.main.stacksize = 0;
154a1ee5 3188 }
154a1ee5 3189
c9ffd2ea 3190 /* Layout commands. */
86eafac0
NC		 3191 if (! bfd_mach_o_layout_commands (mdata))
3192 return FALSE;
c9ffd2ea 3193
7f307238
IS		 3194 /* So, now we have sized the commands and the filelen set to that.
3195 Now we can build the segment command and set the section file offsets. */
c9ffd2ea
TG		 3196 if (mdata->header.filetype == BFD_MACH_O_MH_OBJECT)
3197 {
3198 for (i = 0; i < nbr_segcmd; i++)
3199 if (!bfd_mach_o_build_obj_seg_command
3200 (abfd, &commands[i].command.segment))
3201 return FALSE;
3202 }
3203 else
3204 {
3205 bfd_vma maxvma = 0;
7f307238 3206
c9ffd2ea
TG		 3207 /* Skip pagezero and linkedit segments. */
3208 for (i = 1; i < nbr_segcmd - 1; i++)
3209 {
3210 bfd_mach_o_segment_command *seg = &commands[i].command.segment;
3211
3212 if (!bfd_mach_o_build_exec_seg_command (abfd, seg))
3213 return FALSE;
3214
3215 if (seg->vmaddr + seg->vmsize > maxvma)
3216 maxvma = seg->vmaddr + seg->vmsize;
3217 }
3218
3219 /* Set the size of __PAGEZERO. */
3220 commands[0].command.segment.vmsize =
3221 commands[1].command.segment.vmaddr;
3222
3223 /* Set the vma and fileoff of __LINKEDIT. */
3224 commands[nbr_segcmd - 1].command.segment.vmaddr = maxvma;
3225 commands[nbr_segcmd - 1].command.segment.fileoff = mdata->filelen;
3226
3227 /* Set entry point (once segments have been laid out). */
3228 if (main_idx >= 0)
3229 commands[main_idx].command.main.entryoff =
3230 bfd_get_start_address (abfd) - commands[1].command.segment.vmaddr;
3231 }
7f307238 3232
154a1ee5
TG		 3233 return TRUE;
3234}
3235
3236/* Set the contents of a section. */
3237
3238bfd_boolean
3239bfd_mach_o_set_section_contents (bfd *abfd,
3240 asection *section,
3241 const void * location,
3242 file_ptr offset,
3243 bfd_size_type count)
3244{
3245 file_ptr pos;
3246
7f307238
IS		 3247 /* Trying to write the first section contents will trigger the creation of
3248 the load commands if they are not already present. */
c9ffd2ea 3249 if (!abfd->output_has_begun && !bfd_mach_o_build_commands (abfd))
154a1ee5
TG		 3250 return FALSE;
3251
3252 if (count == 0)
3253 return TRUE;
3254
3255 pos = section->filepos + offset;
3256 if (bfd_seek (abfd, pos, SEEK_SET) != 0
3257 || bfd_bwrite (location, count, abfd) != count)
3258 return FALSE;
3259
3260 return TRUE;
3261}
3262
3263int
116c20d2 3264bfd_mach_o_sizeof_headers (bfd *a ATTRIBUTE_UNUSED,
a6b96beb 3265 struct bfd_link_info *info ATTRIBUTE_UNUSED)
3af9a47b
NC		 3266{
3267 return 0;
3268}
3269
3270/* Make an empty symbol. This is required only because
3271 bfd_make_section_anyway wants to create a symbol for the section. */
3272
154a1ee5 3273asymbol *
116c20d2 3274bfd_mach_o_make_empty_symbol (bfd *abfd)
3af9a47b 3275{
d3ce72d0
NC		 3276 asymbol *new_symbol;
3277
3278 new_symbol = bfd_zalloc (abfd, sizeof (bfd_mach_o_asymbol));
3279 if (new_symbol == NULL)
3280 return new_symbol;
3281 new_symbol->the_bfd = abfd;
b22161d6 3282 new_symbol->udata.i = SYM_MACHO_FIELDS_UNSET;
d3ce72d0 3283 return new_symbol;
3af9a47b
NC		 3284}
3285
154a1ee5 3286static bfd_boolean
47daa70f 3287bfd_mach_o_read_header (bfd *abfd, file_ptr hdr_off, bfd_mach_o_header *header)
3af9a47b 3288{
46d1c23b 3289 struct mach_o_header_external raw;
1e8a024a 3290 unsigned int size;
edeb6e24 3291 bfd_vma (*get32) (const void *) = NULL;
3af9a47b 3292
1e8a024a 3293 /* Just read the magic number. */
47daa70f 3294 if (bfd_seek (abfd, hdr_off, SEEK_SET) != 0
46d1c23b 3295 || bfd_bread (raw.magic, sizeof (raw.magic), abfd) != 4)
154a1ee5 3296 return FALSE;
3af9a47b 3297
46d1c23b 3298 if (bfd_getb32 (raw.magic) == BFD_MACH_O_MH_MAGIC)
3af9a47b
NC		 3299 {
3300 header->byteorder = BFD_ENDIAN_BIG;
154a1ee5 3301 header->magic = BFD_MACH_O_MH_MAGIC;
1e8a024a 3302 header->version = 1;
3af9a47b
NC		 3303 get32 = bfd_getb32;
3304 }
46d1c23b 3305 else if (bfd_getl32 (raw.magic) == BFD_MACH_O_MH_MAGIC)
3af9a47b 3306 {
a95a4550 3307 header->byteorder = BFD_ENDIAN_LITTLE;
154a1ee5 3308 header->magic = BFD_MACH_O_MH_MAGIC;
1e8a024a
TG		 3309 header->version = 1;
3310 get32 = bfd_getl32;
3311 }
46d1c23b 3312 else if (bfd_getb32 (raw.magic) == BFD_MACH_O_MH_MAGIC_64)
1e8a024a
TG		 3313 {
3314 header->byteorder = BFD_ENDIAN_BIG;
154a1ee5 3315 header->magic = BFD_MACH_O_MH_MAGIC_64;
1e8a024a
TG		 3316 header->version = 2;
3317 get32 = bfd_getb32;
3318 }
46d1c23b 3319 else if (bfd_getl32 (raw.magic) == BFD_MACH_O_MH_MAGIC_64)
1e8a024a
TG		 3320 {
3321 header->byteorder = BFD_ENDIAN_LITTLE;
154a1ee5 3322 header->magic = BFD_MACH_O_MH_MAGIC_64;
1e8a024a 3323 header->version = 2;
3af9a47b
NC		 3324 get32 = bfd_getl32;
3325 }
3326 else
3327 {
3328 header->byteorder = BFD_ENDIAN_UNKNOWN;
154a1ee5 3329 return FALSE;
3af9a47b 3330 }
a95a4550 3331
1e8a024a 3332 /* Once the size of the header is known, read the full header. */
c2f09c75 3333 size = mach_o_wide_p (header) ?
154a1ee5 3334 BFD_MACH_O_HEADER_64_SIZE : BFD_MACH_O_HEADER_SIZE;
1e8a024a 3335
47daa70f 3336 if (bfd_seek (abfd, hdr_off, SEEK_SET) != 0
46d1c23b 3337 || bfd_bread (&raw, size, abfd) != size)
154a1ee5 3338 return FALSE;
1e8a024a 3339
46d1c23b
TG		 3340 header->cputype = (*get32) (raw.cputype);
3341 header->cpusubtype = (*get32) (raw.cpusubtype);
3342 header->filetype = (*get32) (raw.filetype);
3343 header->ncmds = (*get32) (raw.ncmds);
3344 header->sizeofcmds = (*get32) (raw.sizeofcmds);
3345 header->flags = (*get32) (raw.flags);
3af9a47b 3346
c2f09c75 3347 if (mach_o_wide_p (header))
46d1c23b 3348 header->reserved = (*get32) (raw.reserved);
facf03f2
TG		 3349 else
3350 header->reserved = 0;
1e8a024a 3351
154a1ee5 3352 return TRUE;
3af9a47b
NC		 3353}
3354
f1bde64c
TG		 3355bfd_boolean
3356bfd_mach_o_new_section_hook (bfd *abfd, asection *sec)
3357{
3358 bfd_mach_o_section *s;
a4551119 3359 unsigned bfdalign = bfd_get_section_alignment (abfd, sec);
f1bde64c
TG		 3360
3361 s = bfd_mach_o_get_mach_o_section (sec);
3362 if (s == NULL)
3363 {
3364 flagword bfd_flags;
a4551119 3365 static const mach_o_section_name_xlat * xlat;
f1bde64c
TG		 3366
3367 s = (bfd_mach_o_section *) bfd_zalloc (abfd, sizeof (*s));
3368 if (s == NULL)
3369 return FALSE;
3370 sec->used_by_bfd = s;
3371 s->bfdsection = sec;
3372
a4551119
TG		 3373 /* Create the Darwin seg/sect name pair from the bfd name.
3374 If this is a canonical name for which a specific paiting exists
3375 there will also be defined flags, type, attribute and alignment
3376 values. */
3377 xlat = bfd_mach_o_convert_section_name_to_mach_o (abfd, sec, s);
3378 if (xlat != NULL)
3379 {
3380 s->flags = xlat->macho_sectype | xlat->macho_secattr;
68ffbac6 3381 s->align = xlat->sectalign > bfdalign ? xlat->sectalign
a4551119 3382 : bfdalign;
a253d456 3383 (void) bfd_set_section_alignment (abfd, sec, s->align);
a4551119
TG		 3384 bfd_flags = bfd_get_section_flags (abfd, sec);
3385 if (bfd_flags == SEC_NO_FLAGS)
3386 bfd_set_section_flags (abfd, sec, xlat->bfd_flags);
3387 }
f1bde64c 3388 else
a4551119
TG		 3389 /* Create default flags. */
3390 bfd_mach_o_set_section_flags_from_bfd (abfd, sec);
f1bde64c
TG		 3391 }
3392
3393 return _bfd_generic_new_section_hook (abfd, sec);
3394}
3395
3396static void
3397bfd_mach_o_init_section_from_mach_o (bfd *abfd, asection *sec,
07d6d2b8 3398 unsigned long prot)
3af9a47b 3399{
117ed4f8 3400 flagword flags;
f1bde64c 3401 bfd_mach_o_section *section;
3af9a47b 3402
f1bde64c
TG		 3403 flags = bfd_get_section_flags (abfd, sec);
3404 section = bfd_mach_o_get_mach_o_section (sec);
3af9a47b 3405
a4551119
TG		 3406 /* TODO: see if we should use the xlat system for doing this by
3407 preference and fall back to this for unknown sections. */
3408
8462aec7 3409 if (flags == SEC_NO_FLAGS)
ef17cb22 3410 {
8462aec7
TG		 3411 /* Try to guess flags. */
3412 if (section->flags & BFD_MACH_O_S_ATTR_DEBUG)
07d6d2b8 3413 flags = SEC_DEBUGGING;
8462aec7 3414 else
07d6d2b8
AM		 3415 {
3416 flags = SEC_ALLOC;
3417 if ((section->flags & BFD_MACH_O_SECTION_TYPE_MASK)
3418 != BFD_MACH_O_S_ZEROFILL)
3419 {
3420 flags |= SEC_LOAD;
3421 if (prot & BFD_MACH_O_PROT_EXECUTE)
3422 flags |= SEC_CODE;
3423 if (prot & BFD_MACH_O_PROT_WRITE)
3424 flags |= SEC_DATA;
3425 else if (prot & BFD_MACH_O_PROT_READ)
3426 flags |= SEC_READONLY;
3427 }
3428 }
ef17cb22 3429 }
15e1c58a
TG		 3430 else
3431 {
8462aec7 3432 if ((flags & SEC_DEBUGGING) == 0)
07d6d2b8 3433 flags |= SEC_ALLOC;
15e1c58a 3434 }
8462aec7
TG		 3435
3436 if (section->offset != 0)
3437 flags |= SEC_HAS_CONTENTS;
92bc0e80
TG		 3438 if (section->nreloc != 0)
3439 flags |= SEC_RELOC;
3440
f1bde64c
TG		 3441 bfd_set_section_flags (abfd, sec, flags);
3442
3443 sec->vma = section->addr;
3444 sec->lma = section->addr;
3445 sec->size = section->size;
3446 sec->filepos = section->offset;
3447 sec->alignment_power = section->align;
3448 sec->segment_mark = 0;
3449 sec->reloc_count = section->nreloc;
3450 sec->rel_filepos = section->reloff;
3451}
3452
3453static asection *
3454bfd_mach_o_make_bfd_section (bfd *abfd,
07d6d2b8
AM		 3455 const unsigned char *segname,
3456 const unsigned char *sectname)
f1bde64c
TG		 3457{
3458 const char *sname;
3459 flagword flags;
a95a4550 3460
f1bde64c
TG		 3461 bfd_mach_o_convert_section_name_to_bfd
3462 (abfd, (const char *)segname, (const char *)sectname, &sname, &flags);
3463 if (sname == NULL)
3464 return NULL;
3af9a47b 3465
f1bde64c 3466 return bfd_make_section_anyway_with_flags (abfd, sname, flags);
3af9a47b
NC		 3467}
3468
f1bde64c 3469static asection *
47daa70f 3470bfd_mach_o_read_section_32 (bfd *abfd, unsigned long prot)
3af9a47b 3471{
46d1c23b 3472 struct mach_o_section_32_external raw;
f1bde64c
TG		 3473 asection *sec;
3474 bfd_mach_o_section *section;
3af9a47b 3475
47daa70f
TG		 3476 if (bfd_bread (&raw, BFD_MACH_O_SECTION_SIZE, abfd)
3477 != BFD_MACH_O_SECTION_SIZE)
f1bde64c 3478 return NULL;
a95a4550 3479
5a5cbf72 3480 sec = bfd_mach_o_make_bfd_section (abfd, raw.segname, raw.sectname);
f1bde64c
TG		 3481 if (sec == NULL)
3482 return NULL;
3483
3484 section = bfd_mach_o_get_mach_o_section (sec);
3485 memcpy (section->segname, raw.segname, sizeof (raw.segname));
3486 section->segname[BFD_MACH_O_SEGNAME_SIZE] = 0;
3487 memcpy (section->sectname, raw.sectname, sizeof (raw.sectname));
69499dca 3488 section->sectname[BFD_MACH_O_SECTNAME_SIZE] = 0;
46d1c23b
TG		 3489 section->addr = bfd_h_get_32 (abfd, raw.addr);
3490 section->size = bfd_h_get_32 (abfd, raw.size);
3491 section->offset = bfd_h_get_32 (abfd, raw.offset);
3492 section->align = bfd_h_get_32 (abfd, raw.align);
c86934ce
NC		 3493 /* PR 17512: file: 0017eb76. */
3494 if (section->align > 64)
3495 {
4eca0228 3496 _bfd_error_handler
d42c267e 3497 (_("bfd_mach_o_read_section_32: overlarge alignment value: %#lx, "
4eca0228 3498 "using 32 instead"), section->align);
c86934ce
NC		 3499 section->align = 32;
3500 }
46d1c23b
TG		 3501 section->reloff = bfd_h_get_32 (abfd, raw.reloff);
3502 section->nreloc = bfd_h_get_32 (abfd, raw.nreloc);
3503 section->flags = bfd_h_get_32 (abfd, raw.flags);
3504 section->reserved1 = bfd_h_get_32 (abfd, raw.reserved1);
3505 section->reserved2 = bfd_h_get_32 (abfd, raw.reserved2);
1e8a024a 3506 section->reserved3 = 0;
1e8a024a 3507
f1bde64c 3508 bfd_mach_o_init_section_from_mach_o (abfd, sec, prot);
1e8a024a 3509
f1bde64c 3510 return sec;
1e8a024a
TG		 3511}
3512
f1bde64c 3513static asection *
47daa70f 3514bfd_mach_o_read_section_64 (bfd *abfd, unsigned long prot)
1e8a024a 3515{
46d1c23b 3516 struct mach_o_section_64_external raw;
f1bde64c
TG		 3517 asection *sec;
3518 bfd_mach_o_section *section;
1e8a024a 3519
47daa70f
TG		 3520 if (bfd_bread (&raw, BFD_MACH_O_SECTION_64_SIZE, abfd)
3521 != BFD_MACH_O_SECTION_64_SIZE)
f1bde64c
TG		 3522 return NULL;
3523
5a5cbf72 3524 sec = bfd_mach_o_make_bfd_section (abfd, raw.segname, raw.sectname);
f1bde64c
TG		 3525 if (sec == NULL)
3526 return NULL;
1e8a024a 3527
f1bde64c
TG		 3528 section = bfd_mach_o_get_mach_o_section (sec);
3529 memcpy (section->segname, raw.segname, sizeof (raw.segname));
3530 section->segname[BFD_MACH_O_SEGNAME_SIZE] = 0;
3531 memcpy (section->sectname, raw.sectname, sizeof (raw.sectname));
69499dca 3532 section->sectname[BFD_MACH_O_SECTNAME_SIZE] = 0;
46d1c23b
TG		 3533 section->addr = bfd_h_get_64 (abfd, raw.addr);
3534 section->size = bfd_h_get_64 (abfd, raw.size);
3535 section->offset = bfd_h_get_32 (abfd, raw.offset);
3536 section->align = bfd_h_get_32 (abfd, raw.align);
c86934ce
NC		 3537 if (section->align > 64)
3538 {
4eca0228 3539 _bfd_error_handler
d42c267e 3540 (_("bfd_mach_o_read_section_64: overlarge alignment value: %#lx, "
4eca0228 3541 "using 32 instead"), section->align);
c86934ce
NC		 3542 section->align = 32;
3543 }
46d1c23b
TG		 3544 section->reloff = bfd_h_get_32 (abfd, raw.reloff);
3545 section->nreloc = bfd_h_get_32 (abfd, raw.nreloc);
3546 section->flags = bfd_h_get_32 (abfd, raw.flags);
3547 section->reserved1 = bfd_h_get_32 (abfd, raw.reserved1);
3548 section->reserved2 = bfd_h_get_32 (abfd, raw.reserved2);
3549 section->reserved3 = bfd_h_get_32 (abfd, raw.reserved3);
3af9a47b 3550
f1bde64c 3551 bfd_mach_o_init_section_from_mach_o (abfd, sec, prot);
3af9a47b 3552
f1bde64c 3553 return sec;
3af9a47b
NC		 3554}
3555
f1bde64c 3556static asection *
47daa70f 3557bfd_mach_o_read_section (bfd *abfd, unsigned long prot, unsigned int wide)
1e8a024a
TG		 3558{
3559 if (wide)
47daa70f 3560 return bfd_mach_o_read_section_64 (abfd, prot);
1e8a024a 3561 else
47daa70f 3562 return bfd_mach_o_read_section_32 (abfd, prot);
1e8a024a
TG		 3563}
3564
afbb9e17 3565static bfd_boolean
ab273af8 3566bfd_mach_o_read_symtab_symbol (bfd *abfd,
07d6d2b8
AM		 3567 bfd_mach_o_symtab_command *sym,
3568 bfd_mach_o_asymbol *s,
3569 unsigned long i)
3af9a47b 3570{
046b007d 3571 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
c2f09c75 3572 unsigned int wide = mach_o_wide_p (&mdata->header);
046b007d
TG		 3573 unsigned int symwidth =
3574 wide ? BFD_MACH_O_NLIST_64_SIZE : BFD_MACH_O_NLIST_SIZE;
92bc0e80 3575 unsigned int symoff = sym->symoff + (i * symwidth);
46d1c23b 3576 struct mach_o_nlist_64_external raw;
3af9a47b
NC		 3577 unsigned char type = -1;
3578 unsigned char section = -1;
3579 short desc = -1;
1e8a024a 3580 symvalue value = -1;
3af9a47b
NC		 3581 unsigned long stroff = -1;
3582 unsigned int symtype = -1;
3583
3584 BFD_ASSERT (sym->strtab != NULL);
3585
c2f09c75 3586 if (bfd_seek (abfd, symoff, SEEK_SET) != 0
46d1c23b 3587 || bfd_bread (&raw, symwidth, abfd) != symwidth)
3af9a47b 3588 {
4eca0228 3589 _bfd_error_handler
695344c0 3590 /* xgettext:c-format */
07d6d2b8
AM		 3591 (_("bfd_mach_o_read_symtab_symbol: unable to read %d bytes at %u"),
3592 symwidth, symoff);
afbb9e17 3593 return FALSE;
3af9a47b
NC		 3594 }
3595
46d1c23b
TG		 3596 stroff = bfd_h_get_32 (abfd, raw.n_strx);
3597 type = bfd_h_get_8 (abfd, raw.n_type);
c2f09c75 3598 symtype = type & BFD_MACH_O_N_TYPE;
46d1c23b
TG		 3599 section = bfd_h_get_8 (abfd, raw.n_sect);
3600 desc = bfd_h_get_16 (abfd, raw.n_desc);
1e8a024a 3601 if (wide)
46d1c23b 3602 value = bfd_h_get_64 (abfd, raw.n_value);
1e8a024a 3603 else
46d1c23b 3604 value = bfd_h_get_32 (abfd, raw.n_value);
3af9a47b
NC		 3605
3606 if (stroff >= sym->strsize)
3607 {
4eca0228 3608 _bfd_error_handler
695344c0 3609 /* xgettext:c-format */
07d6d2b8
AM		 3610 (_("bfd_mach_o_read_symtab_symbol: name out of range (%lu >= %u)"),
3611 stroff,
3612 sym->strsize);
afbb9e17 3613 return FALSE;
3af9a47b
NC		 3614 }
3615
92bc0e80
TG		 3616 s->symbol.the_bfd = abfd;
3617 s->symbol.name = sym->strtab + stroff;
3618 s->symbol.value = value;
3619 s->symbol.flags = 0x0;
b22161d6 3620 s->symbol.udata.i = i;
92bc0e80
TG		 3621 s->n_type = type;
3622 s->n_sect = section;
3623 s->n_desc = desc;
3af9a47b
NC		 3624
3625 if (type & BFD_MACH_O_N_STAB)
3626 {
92bc0e80
TG		 3627 s->symbol.flags |= BSF_DEBUGGING;
3628 s->symbol.section = bfd_und_section_ptr;
15e1c58a
TG		 3629 switch (type)
3630 {
3631 case N_FUN:
3632 case N_STSYM:
3633 case N_LCSYM:
3634 case N_BNSYM:
3635 case N_SLINE:
3636 case N_ENSYM:
3637 case N_ECOMM:
3638 case N_ECOML:
3639 case N_GSYM:
3640 if ((section > 0) && (section <= mdata->nsects))
3641 {
92bc0e80
TG		 3642 s->symbol.section = mdata->sections[section - 1]->bfdsection;
3643 s->symbol.value =
07d6d2b8 3644 s->symbol.value - mdata->sections[section - 1]->addr;
15e1c58a
TG		 3645 }
3646 break;
3647 }
3af9a47b
NC		 3648 }
3649 else
3650 {
b22161d6 3651 if (type & (BFD_MACH_O_N_PEXT | BFD_MACH_O_N_EXT))
92bc0e80 3652 s->symbol.flags |= BSF_GLOBAL;
b22161d6 3653 else
92bc0e80 3654 s->symbol.flags |= BSF_LOCAL;
3af9a47b
NC		 3655
3656 switch (symtype)
3657 {
3658 case BFD_MACH_O_N_UNDF:
07d6d2b8
AM		 3659 if (type == (BFD_MACH_O_N_UNDF | BFD_MACH_O_N_EXT)
3660 && s->symbol.value != 0)
3661 {
3662 /* A common symbol. */
3663 s->symbol.section = bfd_com_section_ptr;
3664 s->symbol.flags = BSF_NO_FLAGS;
3665 }
3666 else
3667 {
3668 s->symbol.section = bfd_und_section_ptr;
3669 if (s->n_desc & BFD_MACH_O_N_WEAK_REF)
3670 s->symbol.flags |= BSF_WEAK;
3671 }
3af9a47b
NC		 3672 break;
3673 case BFD_MACH_O_N_PBUD:
92bc0e80 3674 s->symbol.section = bfd_und_section_ptr;
3af9a47b
NC		 3675 break;
3676 case BFD_MACH_O_N_ABS:
92bc0e80 3677 s->symbol.section = bfd_abs_section_ptr;
3af9a47b
NC		 3678 break;
3679 case BFD_MACH_O_N_SECT:
3680 if ((section > 0) && (section <= mdata->nsects))
3681 {
92bc0e80
TG		 3682 s->symbol.section = mdata->sections[section - 1]->bfdsection;
3683 s->symbol.value =
07d6d2b8 3684 s->symbol.value - mdata->sections[section - 1]->addr;
3af9a47b
NC		 3685 }
3686 else
3687 {
3688 /* Mach-O uses 0 to mean "no section"; not an error. */
3689 if (section != 0)
3690 {
4eca0228 3691 _bfd_error_handler
695344c0 3692 /* xgettext:c-format */
4eca0228
AM		 3693 (_("bfd_mach_o_read_symtab_symbol: "
3694 "symbol \"%s\" specified invalid section %d (max %lu): "
3695 "setting to undefined"),
3696 s->symbol.name, section, mdata->nsects);
3af9a47b 3697 }
92bc0e80 3698 s->symbol.section = bfd_und_section_ptr;
3af9a47b
NC		 3699 }
3700 break;
3701 case BFD_MACH_O_N_INDR:
0596a831
TG		 3702 /* FIXME: we don't follow the BFD convention as this indirect symbol
3703 won't be followed by the referenced one. This looks harmless
3704 unless we start using the linker. */
3705 s->symbol.flags |= BSF_INDIRECT;
3706 s->symbol.section = bfd_ind_section_ptr;
3707 s->symbol.value = 0;
3af9a47b
NC		 3708 break;
3709 default:
4eca0228 3710 _bfd_error_handler
695344c0 3711 /* xgettext:c-format */
4eca0228
AM		 3712 (_("bfd_mach_o_read_symtab_symbol: "
3713 "symbol \"%s\" specified invalid type field 0x%x: "
3714 "setting to undefined"), s->symbol.name, symtype);
92bc0e80 3715 s->symbol.section = bfd_und_section_ptr;
3af9a47b
NC		 3716 break;
3717 }
3718 }
3719
afbb9e17 3720 return TRUE;
3af9a47b
NC		 3721}
3722
c5012cd8 3723bfd_boolean
ab273af8 3724bfd_mach_o_read_symtab_strtab (bfd *abfd)
3af9a47b 3725{
046b007d
TG		 3726 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
3727 bfd_mach_o_symtab_command *sym = mdata->symtab;
3728
3729 /* Fail if there is no symtab. */
3730 if (sym == NULL)
afbb9e17 3731 return FALSE;
046b007d
TG		 3732
3733 /* Success if already loaded. */
3734 if (sym->strtab)
afbb9e17 3735 return TRUE;
3af9a47b
NC		 3736
3737 if (abfd->flags & BFD_IN_MEMORY)
3738 {
3739 struct bfd_in_memory *b;
3740
3741 b = (struct bfd_in_memory *) abfd->iostream;
3742
3743 if ((sym->stroff + sym->strsize) > b->size)
3744 {
3745 bfd_set_error (bfd_error_file_truncated);
afbb9e17 3746 return FALSE;
3af9a47b 3747 }
f075ee0c 3748 sym->strtab = (char *) b->buffer + sym->stroff;
3af9a47b 3749 }
046b007d 3750 else
3af9a47b 3751 {
8bdf0be1
NC		 3752 /* See PR 21840 for a reproducer. */
3753 if ((sym->strsize + 1) == 0)
3754 return FALSE;
e7287c7f 3755 sym->strtab = bfd_alloc (abfd, sym->strsize + 1);
046b007d 3756 if (sym->strtab == NULL)
07d6d2b8 3757 return FALSE;
046b007d
TG		 3758
3759 if (bfd_seek (abfd, sym->stroff, SEEK_SET) != 0
07d6d2b8
AM		 3760 || bfd_bread (sym->strtab, sym->strsize, abfd) != sym->strsize)
3761 {
a1165289
NC		 3762 /* PR 17512: file: 10888-1609-0.004. */
3763 bfd_release (abfd, sym->strtab);
3764 sym->strtab = NULL;
07d6d2b8
AM		 3765 bfd_set_error (bfd_error_file_truncated);
3766 return FALSE;
3767 }
e7287c7f
NC		 3768 /* Zero terminate the string table. */
3769 sym->strtab[sym->strsize] = 0;
3af9a47b
NC		 3770 }
3771
afbb9e17 3772 return TRUE;
3af9a47b
NC		 3773}
3774
c5012cd8 3775bfd_boolean
ab273af8 3776bfd_mach_o_read_symtab_symbols (bfd *abfd)
3af9a47b 3777{
046b007d
TG		 3778 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
3779 bfd_mach_o_symtab_command *sym = mdata->symtab;
3af9a47b 3780 unsigned long i;
3af9a47b 3781
092d27ff 3782 if (sym == NULL || sym->symbols)
0a9d414a
NC		 3783 /* Return now if there are no symbols or if already loaded. */
3784 return TRUE;
046b007d 3785
64d29018 3786 sym->symbols = bfd_alloc2 (abfd, sym->nsyms, sizeof (bfd_mach_o_asymbol));
3af9a47b
NC		 3787 if (sym->symbols == NULL)
3788 {
4eca0228
AM		 3789 _bfd_error_handler (_("bfd_mach_o_read_symtab_symbols: "
3790 "unable to allocate memory for symbols"));
64d29018 3791 sym->nsyms = 0;
afbb9e17 3792 return FALSE;
3af9a47b 3793 }
a95a4550 3794
afbb9e17 3795 if (!bfd_mach_o_read_symtab_strtab (abfd))
64d29018 3796 goto fail;
3af9a47b
NC		 3797
3798 for (i = 0; i < sym->nsyms; i++)
64d29018
NC		 3799 if (!bfd_mach_o_read_symtab_symbol (abfd, sym, &sym->symbols[i], i))
3800 goto fail;
a95a4550 3801
afbb9e17 3802 return TRUE;
64d29018
NC		 3803
3804 fail:
3805 bfd_release (abfd, sym->symbols);
3806 sym->symbols = NULL;
3807 sym->nsyms = 0;
3808 return FALSE;
3af9a47b
NC		 3809}
3810
3811static const char *
116c20d2 3812bfd_mach_o_i386_flavour_string (unsigned int flavour)
3af9a47b
NC		 3813{
3814 switch ((int) flavour)
3815 {
15e1c58a
TG		 3816 case BFD_MACH_O_x86_THREAD_STATE32: return "x86_THREAD_STATE32";
3817 case BFD_MACH_O_x86_FLOAT_STATE32: return "x86_FLOAT_STATE32";
3818 case BFD_MACH_O_x86_EXCEPTION_STATE32: return "x86_EXCEPTION_STATE32";
3819 case BFD_MACH_O_x86_THREAD_STATE64: return "x86_THREAD_STATE64";
3820 case BFD_MACH_O_x86_FLOAT_STATE64: return "x86_FLOAT_STATE64";
3821 case BFD_MACH_O_x86_EXCEPTION_STATE64: return "x86_EXCEPTION_STATE64";
3822 case BFD_MACH_O_x86_THREAD_STATE: return "x86_THREAD_STATE";
3823 case BFD_MACH_O_x86_FLOAT_STATE: return "x86_FLOAT_STATE";
3824 case BFD_MACH_O_x86_EXCEPTION_STATE: return "x86_EXCEPTION_STATE";
3825 case BFD_MACH_O_x86_DEBUG_STATE32: return "x86_DEBUG_STATE32";
3826 case BFD_MACH_O_x86_DEBUG_STATE64: return "x86_DEBUG_STATE64";
3827 case BFD_MACH_O_x86_DEBUG_STATE: return "x86_DEBUG_STATE";
b32e07d7 3828 case BFD_MACH_O_x86_THREAD_STATE_NONE: return "x86_THREAD_STATE_NONE";
3af9a47b
NC		 3829 default: return "UNKNOWN";
3830 }
3831}
3832
3833static const char *
116c20d2 3834bfd_mach_o_ppc_flavour_string (unsigned int flavour)
3af9a47b
NC		 3835{
3836 switch ((int) flavour)
3837 {
b32e07d7
TG		 3838 case BFD_MACH_O_PPC_THREAD_STATE: return "PPC_THREAD_STATE";
3839 case BFD_MACH_O_PPC_FLOAT_STATE: return "PPC_FLOAT_STATE";
3840 case BFD_MACH_O_PPC_EXCEPTION_STATE: return "PPC_EXCEPTION_STATE";
3841 case BFD_MACH_O_PPC_VECTOR_STATE: return "PPC_VECTOR_STATE";
3842 case BFD_MACH_O_PPC_THREAD_STATE64: return "PPC_THREAD_STATE64";
3843 case BFD_MACH_O_PPC_EXCEPTION_STATE64: return "PPC_EXCEPTION_STATE64";
3af9a47b
NC		 3844 default: return "UNKNOWN";
3845 }
3846}
3847
452216ab 3848static bfd_boolean
ab273af8 3849bfd_mach_o_read_dylinker (bfd *abfd, bfd_mach_o_load_command *command)
3af9a47b
NC		 3850{
3851 bfd_mach_o_dylinker_command *cmd = &command->command.dylinker;
46d1c23b 3852 struct mach_o_str_command_external raw;
3af9a47b 3853 unsigned int nameoff;
4525c51a 3854 unsigned int namelen;
3af9a47b 3855
47daa70f 3856 if (bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
452216ab 3857 return FALSE;
3af9a47b 3858
46d1c23b 3859 nameoff = bfd_h_get_32 (abfd, raw.str);
3af9a47b 3860
4525c51a
TG		 3861 cmd->name_offset = nameoff;
3862 namelen = command->len - nameoff;
3863 nameoff += command->offset;
3864 cmd->name_str = bfd_alloc (abfd, namelen);
b32e07d7 3865 if (cmd->name_str == NULL)
452216ab 3866 return FALSE;
4525c51a
TG		 3867 if (bfd_seek (abfd, nameoff, SEEK_SET) != 0
3868 || bfd_bread (cmd->name_str, namelen, abfd) != namelen)
452216ab
TG		 3869 return FALSE;
3870 return TRUE;
3af9a47b
NC		 3871}
3872
452216ab 3873static bfd_boolean
ab273af8 3874bfd_mach_o_read_dylib (bfd *abfd, bfd_mach_o_load_command *command)
3af9a47b 3875{
47daa70f 3876 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
3af9a47b 3877 bfd_mach_o_dylib_command *cmd = &command->command.dylib;
46d1c23b 3878 struct mach_o_dylib_command_external raw;
3af9a47b 3879 unsigned int nameoff;
4525c51a 3880 unsigned int namelen;
3af9a47b 3881
046b007d
TG		 3882 switch (command->type)
3883 {
3884 case BFD_MACH_O_LC_LOAD_DYLIB:
fbe383b9 3885 case BFD_MACH_O_LC_LAZY_LOAD_DYLIB:
046b007d 3886 case BFD_MACH_O_LC_LOAD_WEAK_DYLIB:
046b007d 3887 case BFD_MACH_O_LC_ID_DYLIB:
046b007d 3888 case BFD_MACH_O_LC_REEXPORT_DYLIB:
73017762 3889 case BFD_MACH_O_LC_LOAD_UPWARD_DYLIB:
046b007d
TG		 3890 break;
3891 default:
b32e07d7 3892 BFD_FAIL ();
452216ab 3893 return FALSE;
046b007d 3894 }
3af9a47b 3895
47daa70f 3896 if (bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
452216ab 3897 return FALSE;
3af9a47b 3898
46d1c23b
TG		 3899 nameoff = bfd_h_get_32 (abfd, raw.name);
3900 cmd->timestamp = bfd_h_get_32 (abfd, raw.timestamp);
3901 cmd->current_version = bfd_h_get_32 (abfd, raw.current_version);
3902 cmd->compatibility_version = bfd_h_get_32 (abfd, raw.compatibility_version);
3af9a47b
NC		 3903
3904 cmd->name_offset = command->offset + nameoff;
4525c51a
TG		 3905 namelen = command->len - nameoff;
3906 cmd->name_str = bfd_alloc (abfd, namelen);
b32e07d7 3907 if (cmd->name_str == NULL)
452216ab 3908 return FALSE;
47daa70f 3909 if (bfd_seek (abfd, mdata->hdr_offset + cmd->name_offset, SEEK_SET) != 0
4525c51a 3910 || bfd_bread (cmd->name_str, namelen, abfd) != namelen)
452216ab
TG		 3911 return FALSE;
3912 return TRUE;
3af9a47b
NC		 3913}
3914
452216ab 3915static bfd_boolean
7a79c514 3916bfd_mach_o_read_prebound_dylib (bfd *abfd,
07d6d2b8 3917 bfd_mach_o_load_command *command)
3af9a47b 3918{
7a79c514
TG		 3919 bfd_mach_o_prebound_dylib_command *cmd = &command->command.prebound_dylib;
3920 struct mach_o_prebound_dylib_command_external raw;
3921 unsigned int nameoff;
3922 unsigned int modoff;
3923 unsigned int str_len;
3924 unsigned char *str;
3925
47daa70f 3926 if (bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
452216ab 3927 return FALSE;
7a79c514
TG		 3928
3929 nameoff = bfd_h_get_32 (abfd, raw.name);
3930 modoff = bfd_h_get_32 (abfd, raw.linked_modules);
3931 if (nameoff > command->len || modoff > command->len)
452216ab 3932 return FALSE;
7a79c514
TG		 3933
3934 str_len = command->len - sizeof (raw);
3935 str = bfd_alloc (abfd, str_len);
3936 if (str == NULL)
452216ab 3937 return FALSE;
7a79c514 3938 if (bfd_bread (str, str_len, abfd) != str_len)
452216ab 3939 return FALSE;
7a79c514
TG		 3940
3941 cmd->name_offset = command->offset + nameoff;
3942 cmd->nmodules = bfd_h_get_32 (abfd, raw.nmodules);
3943 cmd->linked_modules_offset = command->offset + modoff;
3944
3945 cmd->name_str = (char *)str + nameoff - (sizeof (raw) + BFD_MACH_O_LC_SIZE);
3946 cmd->linked_modules = str + modoff - (sizeof (raw) + BFD_MACH_O_LC_SIZE);
452216ab 3947 return TRUE;
7a79c514
TG		 3948}
3949
452216ab 3950static bfd_boolean
7a79c514
TG		 3951bfd_mach_o_read_prebind_cksum (bfd *abfd,
3952 bfd_mach_o_load_command *command)
3953{
3954 bfd_mach_o_prebind_cksum_command *cmd = &command->command.prebind_cksum;
3955 struct mach_o_prebind_cksum_command_external raw;
3af9a47b 3956
47daa70f 3957 if (bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
452216ab 3958 return FALSE;
7a79c514
TG		 3959
3960 cmd->cksum = bfd_get_32 (abfd, raw.cksum);
452216ab 3961 return TRUE;
7a79c514
TG		 3962}
3963
452216ab 3964static bfd_boolean
7a79c514
TG		 3965bfd_mach_o_read_twolevel_hints (bfd *abfd,
3966 bfd_mach_o_load_command *command)
3967{
3968 bfd_mach_o_twolevel_hints_command *cmd = &command->command.twolevel_hints;
3969 struct mach_o_twolevel_hints_command_external raw;
3970
47daa70f 3971 if (bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
452216ab 3972 return FALSE;
7a79c514
TG		 3973
3974 cmd->offset = bfd_get_32 (abfd, raw.offset);
3975 cmd->nhints = bfd_get_32 (abfd, raw.nhints);
452216ab 3976 return TRUE;
3af9a47b
NC		 3977}
3978
452216ab 3979static bfd_boolean
9f4a5bd1
TG		 3980bfd_mach_o_read_fvmlib (bfd *abfd, bfd_mach_o_load_command *command)
3981{
3982 bfd_mach_o_fvmlib_command *fvm = &command->command.fvmlib;
3983 struct mach_o_fvmlib_command_external raw;
3984 unsigned int nameoff;
4525c51a 3985 unsigned int namelen;
9f4a5bd1 3986
47daa70f 3987 if (bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
452216ab 3988 return FALSE;
9f4a5bd1
TG		 3989
3990 nameoff = bfd_h_get_32 (abfd, raw.name);
3991 fvm->minor_version = bfd_h_get_32 (abfd, raw.minor_version);
3992 fvm->header_addr = bfd_h_get_32 (abfd, raw.header_addr);
3993
3994 fvm->name_offset = command->offset + nameoff;
4525c51a
TG		 3995 namelen = command->len - nameoff;
3996 fvm->name_str = bfd_alloc (abfd, namelen);
9f4a5bd1 3997 if (fvm->name_str == NULL)
452216ab 3998 return FALSE;
9f4a5bd1 3999 if (bfd_seek (abfd, fvm->name_offset, SEEK_SET) != 0
4525c51a 4000 || bfd_bread (fvm->name_str, namelen, abfd) != namelen)
452216ab
TG		 4001 return FALSE;
4002 return TRUE;
9f4a5bd1
TG		 4003}
4004
452216ab 4005static bfd_boolean
ab273af8 4006bfd_mach_o_read_thread (bfd *abfd, bfd_mach_o_load_command *command)
3af9a47b 4007{
b32e07d7 4008 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
3af9a47b 4009 bfd_mach_o_thread_command *cmd = &command->command.thread;
92bc0e80 4010 unsigned int offset;
3af9a47b
NC		 4011 unsigned int nflavours;
4012 unsigned int i;
4013
4014 BFD_ASSERT ((command->type == BFD_MACH_O_LC_THREAD)
4015 || (command->type == BFD_MACH_O_LC_UNIXTHREAD));
4016
b32e07d7 4017 /* Count the number of threads. */
3af9a47b
NC		 4018 offset = 8;
4019 nflavours = 0;
4020 while (offset != command->len)
4021 {
46d1c23b
TG		 4022 struct mach_o_thread_command_external raw;
4023
3af9a47b 4024 if (offset >= command->len)
452216ab 4025 return FALSE;
3af9a47b 4026
c2f09c75 4027 if (bfd_seek (abfd, command->offset + offset, SEEK_SET) != 0
07d6d2b8 4028 || bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
452216ab 4029 return FALSE;
3af9a47b 4030
46d1c23b 4031 offset += sizeof (raw) + bfd_h_get_32 (abfd, raw.count) * 4;
3af9a47b
NC		 4032 nflavours++;
4033 }
4034
b32e07d7 4035 /* Allocate threads. */
64d29018
NC		 4036 cmd->flavours = bfd_alloc2
4037 (abfd, nflavours, sizeof (bfd_mach_o_thread_flavour));
3af9a47b 4038 if (cmd->flavours == NULL)
452216ab 4039 return FALSE;
3af9a47b
NC		 4040 cmd->nflavours = nflavours;
4041
4042 offset = 8;
4043 nflavours = 0;
4044 while (offset != command->len)
4045 {
46d1c23b
TG		 4046 struct mach_o_thread_command_external raw;
4047
3af9a47b 4048 if (offset >= command->len)
452216ab 4049 return FALSE;
3af9a47b
NC		 4050
4051 if (nflavours >= cmd->nflavours)
452216ab 4052 return FALSE;
3af9a47b 4053
c2f09c75 4054 if (bfd_seek (abfd, command->offset + offset, SEEK_SET) != 0
07d6d2b8 4055 || bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
452216ab 4056 return FALSE;
3af9a47b 4057
46d1c23b
TG		 4058 cmd->flavours[nflavours].flavour = bfd_h_get_32 (abfd, raw.flavour);
4059 cmd->flavours[nflavours].offset = command->offset + offset + sizeof (raw);
4060 cmd->flavours[nflavours].size = bfd_h_get_32 (abfd, raw.count) * 4;
4061 offset += cmd->flavours[nflavours].size + sizeof (raw);
3af9a47b
NC		 4062 nflavours++;
4063 }
4064
4065 for (i = 0; i < nflavours; i++)
4066 {
4067 asection *bfdsec;
4068 unsigned int snamelen;
4069 char *sname;
4070 const char *flavourstr;
4071 const char *prefix = "LC_THREAD";
a95a4550
AM		 4072 unsigned int j = 0;
4073
3af9a47b
NC		 4074 switch (mdata->header.cputype)
4075 {
4076 case BFD_MACH_O_CPU_TYPE_POWERPC:
1e8a024a 4077 case BFD_MACH_O_CPU_TYPE_POWERPC_64:
707e555b
TG		 4078 flavourstr =
4079 bfd_mach_o_ppc_flavour_string (cmd->flavours[i].flavour);
3af9a47b
NC		 4080 break;
4081 case BFD_MACH_O_CPU_TYPE_I386:
1e8a024a 4082 case BFD_MACH_O_CPU_TYPE_X86_64:
707e555b
TG		 4083 flavourstr =
4084 bfd_mach_o_i386_flavour_string (cmd->flavours[i].flavour);
3af9a47b
NC		 4085 break;
4086 default:
4087 flavourstr = "UNKNOWN_ARCHITECTURE";
4088 break;
4089 }
a95a4550 4090
3af9a47b 4091 snamelen = strlen (prefix) + 1 + 20 + 1 + strlen (flavourstr) + 1;
116c20d2 4092 sname = bfd_alloc (abfd, snamelen);
3af9a47b 4093 if (sname == NULL)
452216ab 4094 return FALSE;
3af9a47b
NC		 4095
4096 for (;;)
4097 {
a95a4550
AM		 4098 sprintf (sname, "%s.%s.%u", prefix, flavourstr, j);
4099 if (bfd_get_section_by_name (abfd, sname) == NULL)
3af9a47b 4100 break;
a95a4550 4101 j++;
3af9a47b
NC		 4102 }
4103
117ed4f8 4104 bfdsec = bfd_make_section_with_flags (abfd, sname, SEC_HAS_CONTENTS);
a95a4550 4105
3af9a47b
NC		 4106 bfdsec->vma = 0;
4107 bfdsec->lma = 0;
eea6121a 4108 bfdsec->size = cmd->flavours[i].size;
3af9a47b
NC		 4109 bfdsec->filepos = cmd->flavours[i].offset;
4110 bfdsec->alignment_power = 0x0;
3af9a47b
NC		 4111
4112 cmd->section = bfdsec;
4113 }
4114
452216ab 4115 return TRUE;
3af9a47b
NC		 4116}
4117
452216ab 4118static bfd_boolean
ab273af8 4119bfd_mach_o_read_dysymtab (bfd *abfd, bfd_mach_o_load_command *command)
3af9a47b 4120{
046b007d 4121 bfd_mach_o_dysymtab_command *cmd = &command->command.dysymtab;
b32e07d7 4122 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
3af9a47b
NC		 4123
4124 BFD_ASSERT (command->type == BFD_MACH_O_LC_DYSYMTAB);
4125
46d1c23b
TG		 4126 {
4127 struct mach_o_dysymtab_command_external raw;
4128
47daa70f 4129 if (bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
452216ab 4130 return FALSE;
3af9a47b 4131
46d1c23b
TG		 4132 cmd->ilocalsym = bfd_h_get_32 (abfd, raw.ilocalsym);
4133 cmd->nlocalsym = bfd_h_get_32 (abfd, raw.nlocalsym);
4134 cmd->iextdefsym = bfd_h_get_32 (abfd, raw.iextdefsym);
4135 cmd->nextdefsym = bfd_h_get_32 (abfd, raw.nextdefsym);
4136 cmd->iundefsym = bfd_h_get_32 (abfd, raw.iundefsym);
4137 cmd->nundefsym = bfd_h_get_32 (abfd, raw.nundefsym);
4138 cmd->tocoff = bfd_h_get_32 (abfd, raw.tocoff);
4139 cmd->ntoc = bfd_h_get_32 (abfd, raw.ntoc);
4140 cmd->modtaboff = bfd_h_get_32 (abfd, raw.modtaboff);
4141 cmd->nmodtab = bfd_h_get_32 (abfd, raw.nmodtab);
4142 cmd->extrefsymoff = bfd_h_get_32 (abfd, raw.extrefsymoff);
4143 cmd->nextrefsyms = bfd_h_get_32 (abfd, raw.nextrefsyms);
4144 cmd->indirectsymoff = bfd_h_get_32 (abfd, raw.indirectsymoff);
4145 cmd->nindirectsyms = bfd_h_get_32 (abfd, raw.nindirectsyms);
4146 cmd->extreloff = bfd_h_get_32 (abfd, raw.extreloff);
4147 cmd->nextrel = bfd_h_get_32 (abfd, raw.nextrel);
4148 cmd->locreloff = bfd_h_get_32 (abfd, raw.locreloff);
4149 cmd->nlocrel = bfd_h_get_32 (abfd, raw.nlocrel);
4150 }
046b007d
TG		 4151
4152 if (cmd->nmodtab != 0)
4153 {
046b007d
TG		 4154 unsigned int i;
4155 int wide = bfd_mach_o_wide_p (abfd);
4156 unsigned int module_len = wide ? 56 : 52;
4157
4158 cmd->dylib_module =
07d6d2b8 4159 bfd_alloc2 (abfd, cmd->nmodtab, sizeof (bfd_mach_o_dylib_module));
046b007d 4160 if (cmd->dylib_module == NULL)
07d6d2b8 4161 return FALSE;
046b007d
TG		 4162
4163 if (bfd_seek (abfd, cmd->modtaboff, SEEK_SET) != 0)
07d6d2b8 4164 return FALSE;
046b007d
TG		 4165
4166 for (i = 0; i < cmd->nmodtab; i++)
07d6d2b8
AM		 4167 {
4168 bfd_mach_o_dylib_module *module = &cmd->dylib_module[i];
4169 unsigned long v;
4170 unsigned char buf[56];
4171
4172 if (bfd_bread ((void *) buf, module_len, abfd) != module_len)
4173 return FALSE;
4174
4175 module->module_name_idx = bfd_h_get_32 (abfd, buf + 0);
4176 module->iextdefsym = bfd_h_get_32 (abfd, buf + 4);
4177 module->nextdefsym = bfd_h_get_32 (abfd, buf + 8);
4178 module->irefsym = bfd_h_get_32 (abfd, buf + 12);
4179 module->nrefsym = bfd_h_get_32 (abfd, buf + 16);
4180 module->ilocalsym = bfd_h_get_32 (abfd, buf + 20);
4181 module->nlocalsym = bfd_h_get_32 (abfd, buf + 24);
4182 module->iextrel = bfd_h_get_32 (abfd, buf + 28);
4183 module->nextrel = bfd_h_get_32 (abfd, buf + 32);
4184 v = bfd_h_get_32 (abfd, buf +36);
4185 module->iinit = v & 0xffff;
4186 module->iterm = (v >> 16) & 0xffff;
4187 v = bfd_h_get_32 (abfd, buf + 40);
4188 module->ninit = v & 0xffff;
4189 module->nterm = (v >> 16) & 0xffff;
4190 if (wide)
4191 {
4192 module->objc_module_info_size = bfd_h_get_32 (abfd, buf + 44);
4193 module->objc_module_info_addr = bfd_h_get_64 (abfd, buf + 48);
4194 }
4195 else
4196 {
4197 module->objc_module_info_addr = bfd_h_get_32 (abfd, buf + 44);
4198 module->objc_module_info_size = bfd_h_get_32 (abfd, buf + 48);
4199 }
4200 }
046b007d 4201 }
afbb9e17 4202
046b007d
TG		 4203 if (cmd->ntoc != 0)
4204 {
64d29018 4205 unsigned long i;
046b007d 4206
64d29018 4207 cmd->dylib_toc = bfd_alloc2
07d6d2b8 4208 (abfd, cmd->ntoc, sizeof (bfd_mach_o_dylib_table_of_content));
046b007d 4209 if (cmd->dylib_toc == NULL)
07d6d2b8 4210 return FALSE;
046b007d
TG		 4211
4212 if (bfd_seek (abfd, cmd->tocoff, SEEK_SET) != 0)
07d6d2b8 4213 return FALSE;
046b007d
TG		 4214
4215 for (i = 0; i < cmd->ntoc; i++)
07d6d2b8
AM		 4216 {
4217 struct mach_o_dylib_table_of_contents_external raw;
4218 bfd_mach_o_dylib_table_of_content *toc = &cmd->dylib_toc[i];
046b007d 4219
07d6d2b8
AM		 4220 if (bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
4221 return FALSE;
046b007d 4222
07d6d2b8
AM		 4223 toc->symbol_index = bfd_h_get_32 (abfd, raw.symbol_index);
4224 toc->module_index = bfd_h_get_32 (abfd, raw.module_index);
4225 }
046b007d
TG		 4226 }
4227
4228 if (cmd->nindirectsyms != 0)
4229 {
046b007d
TG		 4230 unsigned int i;
4231
64d29018 4232 cmd->indirect_syms = bfd_alloc2
07d6d2b8 4233 (abfd, cmd->nindirectsyms, sizeof (unsigned int));
046b007d 4234 if (cmd->indirect_syms == NULL)
07d6d2b8 4235 return FALSE;
046b007d
TG		 4236
4237 if (bfd_seek (abfd, cmd->indirectsymoff, SEEK_SET) != 0)
07d6d2b8 4238 return FALSE;
046b007d
TG		 4239
4240 for (i = 0; i < cmd->nindirectsyms; i++)
07d6d2b8
AM		 4241 {
4242 unsigned char raw[4];
4243 unsigned int *is = &cmd->indirect_syms[i];
046b007d 4244
07d6d2b8
AM		 4245 if (bfd_bread (raw, sizeof (raw), abfd) != sizeof (raw))
4246 return FALSE;
046b007d 4247
07d6d2b8
AM		 4248 *is = bfd_h_get_32 (abfd, raw);
4249 }
046b007d
TG		 4250 }
4251
4252 if (cmd->nextrefsyms != 0)
4253 {
046b007d
TG		 4254 unsigned long v;
4255 unsigned int i;
4256
64d29018 4257 cmd->ext_refs = bfd_alloc2
07d6d2b8 4258 (abfd, cmd->nextrefsyms, sizeof (bfd_mach_o_dylib_reference));
046b007d 4259 if (cmd->ext_refs == NULL)
07d6d2b8 4260 return FALSE;
046b007d
TG		 4261
4262 if (bfd_seek (abfd, cmd->extrefsymoff, SEEK_SET) != 0)
07d6d2b8 4263 return FALSE;
046b007d
TG		 4264
4265 for (i = 0; i < cmd->nextrefsyms; i++)
07d6d2b8
AM		 4266 {
4267 unsigned char raw[4];
4268 bfd_mach_o_dylib_reference *ref = &cmd->ext_refs[i];
4269
4270 if (bfd_bread (raw, sizeof (raw), abfd) != sizeof (raw))
4271 return FALSE;
4272
4273 /* Fields isym and flags are written as bit-fields, thus we need
4274 a specific processing for endianness. */
4275 v = bfd_h_get_32 (abfd, raw);
4276 if (bfd_big_endian (abfd))
4277 {
4278 ref->isym = (v >> 8) & 0xffffff;
4279 ref->flags = v & 0xff;
4280 }
4281 else
4282 {
4283 ref->isym = v & 0xffffff;
4284 ref->flags = (v >> 24) & 0xff;
4285 }
4286 }
046b007d 4287 }
3af9a47b 4288
b32e07d7 4289 if (mdata->dysymtab)
452216ab 4290 return FALSE;
b32e07d7
TG		 4291 mdata->dysymtab = cmd;
4292
452216ab 4293 return TRUE;
3af9a47b
NC		 4294}
4295
452216ab 4296static bfd_boolean
ab273af8 4297bfd_mach_o_read_symtab (bfd *abfd, bfd_mach_o_load_command *command)
3af9a47b 4298{
046b007d
TG		 4299 bfd_mach_o_symtab_command *symtab = &command->command.symtab;
4300 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
46d1c23b 4301 struct mach_o_symtab_command_external raw;
3af9a47b
NC		 4302
4303 BFD_ASSERT (command->type == BFD_MACH_O_LC_SYMTAB);
4304
47daa70f 4305 if (bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
452216ab 4306 return FALSE;
a95a4550 4307
46d1c23b
TG		 4308 symtab->symoff = bfd_h_get_32 (abfd, raw.symoff);
4309 symtab->nsyms = bfd_h_get_32 (abfd, raw.nsyms);
4310 symtab->stroff = bfd_h_get_32 (abfd, raw.stroff);
4311 symtab->strsize = bfd_h_get_32 (abfd, raw.strsize);
046b007d
TG		 4312 symtab->symbols = NULL;
4313 symtab->strtab = NULL;
3af9a47b 4314
046b007d 4315 if (symtab->nsyms != 0)
15e1c58a
TG		 4316 abfd->flags |= HAS_SYMS;
4317
046b007d 4318 if (mdata->symtab)
452216ab 4319 return FALSE;
046b007d 4320 mdata->symtab = symtab;
452216ab 4321 return TRUE;
3af9a47b
NC		 4322}
4323
452216ab 4324static bfd_boolean
ab273af8 4325bfd_mach_o_read_uuid (bfd *abfd, bfd_mach_o_load_command *command)
15e1c58a
TG		 4326{
4327 bfd_mach_o_uuid_command *cmd = &command->command.uuid;
15e1c58a
TG		 4328
4329 BFD_ASSERT (command->type == BFD_MACH_O_LC_UUID);
4330
47daa70f 4331 if (bfd_bread (cmd->uuid, 16, abfd) != 16)
452216ab 4332 return FALSE;
15e1c58a 4333
452216ab 4334 return TRUE;
15e1c58a
TG		 4335}
4336
452216ab 4337static bfd_boolean
ab273af8 4338bfd_mach_o_read_linkedit (bfd *abfd, bfd_mach_o_load_command *command)
046b007d
TG		 4339{
4340 bfd_mach_o_linkedit_command *cmd = &command->command.linkedit;
46d1c23b 4341 struct mach_o_linkedit_data_command_external raw;
046b007d 4342
47daa70f 4343 if (bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
452216ab 4344 return FALSE;
046b007d 4345
46d1c23b
TG		 4346 cmd->dataoff = bfd_get_32 (abfd, raw.dataoff);
4347 cmd->datasize = bfd_get_32 (abfd, raw.datasize);
452216ab 4348 return TRUE;
046b007d
TG		 4349}
4350
452216ab 4351static bfd_boolean
ab273af8 4352bfd_mach_o_read_str (bfd *abfd, bfd_mach_o_load_command *command)
046b007d
TG		 4353{
4354 bfd_mach_o_str_command *cmd = &command->command.str;
46d1c23b 4355 struct mach_o_str_command_external raw;
046b007d
TG		 4356 unsigned long off;
4357
47daa70f 4358 if (bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
452216ab 4359 return FALSE;
046b007d 4360
46d1c23b 4361 off = bfd_get_32 (abfd, raw.str);
046b007d
TG		 4362 cmd->stroff = command->offset + off;
4363 cmd->str_len = command->len - off;
4364 cmd->str = bfd_alloc (abfd, cmd->str_len);
4365 if (cmd->str == NULL)
452216ab 4366 return FALSE;
046b007d 4367 if (bfd_seek (abfd, cmd->stroff, SEEK_SET) != 0
91d6fa6a 4368 || bfd_bread ((void *) cmd->str, cmd->str_len, abfd) != cmd->str_len)
452216ab
TG		 4369 return FALSE;
4370 return TRUE;
046b007d
TG		 4371}
4372
c9ffd2ea
TG		 4373static unsigned char *
4374bfd_mach_o_alloc_and_read (bfd *abfd, unsigned int off, unsigned int size)
4375{
4376 unsigned char *buf;
4377
4378 buf = bfd_alloc (abfd, size);
4379 if (buf == NULL)
4380 return NULL;
4381 if (bfd_seek (abfd, off, SEEK_SET) != 0
4382 || bfd_bread (buf, size, abfd) != size)
4383 return NULL;
4384 return buf;
4385}
4386
4387static bfd_boolean
4388bfd_mach_o_read_dyld_content (bfd *abfd, bfd_mach_o_dyld_info_command *cmd)
4389{
4390 /* Read rebase content. */
4391 if (cmd->rebase_content == NULL && cmd->rebase_size != 0)
4392 {
4393 cmd->rebase_content =
4394 bfd_mach_o_alloc_and_read (abfd, cmd->rebase_off, cmd->rebase_size);
4395 if (cmd->rebase_content == NULL)
4396 return FALSE;
4397 }
4398
4399 /* Read bind content. */
4400 if (cmd->bind_content == NULL && cmd->bind_size != 0)
4401 {
4402 cmd->bind_content =
4403 bfd_mach_o_alloc_and_read (abfd, cmd->bind_off, cmd->bind_size);
4404 if (cmd->bind_content == NULL)
4405 return FALSE;
4406 }
4407
4408 /* Read weak bind content. */
4409 if (cmd->weak_bind_content == NULL && cmd->weak_bind_size != 0)
4410 {
4411 cmd->weak_bind_content = bfd_mach_o_alloc_and_read
4412 (abfd, cmd->weak_bind_off, cmd->weak_bind_size);
4413 if (cmd->weak_bind_content == NULL)
4414 return FALSE;
4415 }
4416
4417 /* Read lazy bind content. */
4418 if (cmd->lazy_bind_content == NULL && cmd->lazy_bind_size != 0)
4419 {
4420 cmd->lazy_bind_content = bfd_mach_o_alloc_and_read
4421 (abfd, cmd->lazy_bind_off, cmd->lazy_bind_size);
4422 if (cmd->lazy_bind_content == NULL)
4423 return FALSE;
4424 }
4425
4426 /* Read export content. */
4427 if (cmd->export_content == NULL && cmd->export_size != 0)
4428 {
4429 cmd->export_content = bfd_mach_o_alloc_and_read
4430 (abfd, cmd->export_off, cmd->export_size);
4431 if (cmd->export_content == NULL)
4432 return FALSE;
4433 }
4434
4435 return TRUE;
4436}
4437
452216ab 4438static bfd_boolean
ab273af8 4439bfd_mach_o_read_dyld_info (bfd *abfd, bfd_mach_o_load_command *command)
ad86f1fb
TG		 4440{
4441 bfd_mach_o_dyld_info_command *cmd = &command->command.dyld_info;
46d1c23b 4442 struct mach_o_dyld_info_command_external raw;
ad86f1fb 4443
47daa70f 4444 if (bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
452216ab 4445 return FALSE;
ad86f1fb 4446
46d1c23b
TG		 4447 cmd->rebase_off = bfd_get_32 (abfd, raw.rebase_off);
4448 cmd->rebase_size = bfd_get_32 (abfd, raw.rebase_size);
c9ffd2ea 4449 cmd->rebase_content = NULL;
46d1c23b
TG		 4450 cmd->bind_off = bfd_get_32 (abfd, raw.bind_off);
4451 cmd->bind_size = bfd_get_32 (abfd, raw.bind_size);
c9ffd2ea 4452 cmd->bind_content = NULL;
46d1c23b
TG		 4453 cmd->weak_bind_off = bfd_get_32 (abfd, raw.weak_bind_off);
4454 cmd->weak_bind_size = bfd_get_32 (abfd, raw.weak_bind_size);
c9ffd2ea 4455 cmd->weak_bind_content = NULL;
46d1c23b
TG		 4456 cmd->lazy_bind_off = bfd_get_32 (abfd, raw.lazy_bind_off);
4457 cmd->lazy_bind_size = bfd_get_32 (abfd, raw.lazy_bind_size);
c9ffd2ea 4458 cmd->lazy_bind_content = NULL;
46d1c23b
TG		 4459 cmd->export_off = bfd_get_32 (abfd, raw.export_off);
4460 cmd->export_size = bfd_get_32 (abfd, raw.export_size);
c9ffd2ea 4461 cmd->export_content = NULL;
452216ab 4462 return TRUE;
ad86f1fb
TG		 4463}
4464
edbdea0e
TG		 4465static bfd_boolean
4466bfd_mach_o_read_version_min (bfd *abfd, bfd_mach_o_load_command *command)
4467{
4468 bfd_mach_o_version_min_command *cmd = &command->command.version_min;
4469 struct mach_o_version_min_command_external raw;
4470 unsigned int ver;
4471
47daa70f 4472 if (bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
edbdea0e
TG		 4473 return FALSE;
4474
4475 ver = bfd_get_32 (abfd, raw.version);
4476 cmd->rel = ver >> 16;
4477 cmd->maj = ver >> 8;
4478 cmd->min = ver;
4479 cmd->reserved = bfd_get_32 (abfd, raw.reserved);
4480 return TRUE;
4481}
4482
fc55a902
TG		 4483static bfd_boolean
4484bfd_mach_o_read_encryption_info (bfd *abfd, bfd_mach_o_load_command *command)
4485{
4486 bfd_mach_o_encryption_info_command *cmd = &command->command.encryption_info;
4487 struct mach_o_encryption_info_command_external raw;
4488
47daa70f
TG		 4489 if (bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
4490 return FALSE;
4491
4492 cmd->cryptoff = bfd_get_32 (abfd, raw.cryptoff);
4493 cmd->cryptsize = bfd_get_32 (abfd, raw.cryptsize);
4494 cmd->cryptid = bfd_get_32 (abfd, raw.cryptid);
4495 return TRUE;
4496}
4497
4498static bfd_boolean
4499bfd_mach_o_read_encryption_info_64 (bfd *abfd, bfd_mach_o_load_command *command)
4500{
4501 bfd_mach_o_encryption_info_command *cmd = &command->command.encryption_info;
4502 struct mach_o_encryption_info_64_command_external raw;
4503
4504 if (bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
fc55a902
TG		 4505 return FALSE;
4506
4507 cmd->cryptoff = bfd_get_32 (abfd, raw.cryptoff);
4508 cmd->cryptsize = bfd_get_32 (abfd, raw.cryptsize);
4509 cmd->cryptid = bfd_get_32 (abfd, raw.cryptid);
4510 return TRUE;
4511}
4512
1778ad74
TG		 4513static bfd_boolean
4514bfd_mach_o_read_main (bfd *abfd, bfd_mach_o_load_command *command)
4515{
4516 bfd_mach_o_main_command *cmd = &command->command.main;
4517 struct mach_o_entry_point_command_external raw;
4518
47daa70f 4519 if (bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
1778ad74
TG		 4520 return FALSE;
4521
4522 cmd->entryoff = bfd_get_64 (abfd, raw.entryoff);
4523 cmd->stacksize = bfd_get_64 (abfd, raw.stacksize);
4524 return TRUE;
4525}
4526
4527static bfd_boolean
4528bfd_mach_o_read_source_version (bfd *abfd, bfd_mach_o_load_command *command)
4529{
4530 bfd_mach_o_source_version_command *cmd = &command->command.source_version;
4531 struct mach_o_source_version_command_external raw;
4532 bfd_uint64_t ver;
4533
47daa70f 4534 if (bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
1778ad74
TG		 4535 return FALSE;
4536
4537 ver = bfd_get_64 (abfd, raw.version);
4538 /* Note: we use a serie of shift to avoid shift > 32 (for which gcc
4539 generates warnings) in case of the host doesn't support 64 bit
4540 integers. */
4541 cmd->e = ver & 0x3ff;
4542 ver >>= 10;
4543 cmd->d = ver & 0x3ff;
4544 ver >>= 10;
4545 cmd->c = ver & 0x3ff;
4546 ver >>= 10;
4547 cmd->b = ver & 0x3ff;
4548 ver >>= 10;
4549 cmd->a = ver & 0xffffff;
4550 return TRUE;
4551}
4552
452216ab 4553static bfd_boolean
ab273af8 4554bfd_mach_o_read_segment (bfd *abfd,
07d6d2b8
AM		 4555 bfd_mach_o_load_command *command,
4556 unsigned int wide)
3af9a47b 4557{
3af9a47b
NC		 4558 bfd_mach_o_segment_command *seg = &command->command.segment;
4559 unsigned long i;
a95a4550 4560
1e8a024a
TG		 4561 if (wide)
4562 {
46d1c23b
TG		 4563 struct mach_o_segment_command_64_external raw;
4564
1e8a024a 4565 BFD_ASSERT (command->type == BFD_MACH_O_LC_SEGMENT_64);
3af9a47b 4566
47daa70f 4567 if (bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
07d6d2b8 4568 return FALSE;
3af9a47b 4569
46d1c23b 4570 memcpy (seg->segname, raw.segname, 16);
15e1c58a 4571 seg->segname[16] = '\0';
1e8a024a 4572
46d1c23b
TG		 4573 seg->vmaddr = bfd_h_get_64 (abfd, raw.vmaddr);
4574 seg->vmsize = bfd_h_get_64 (abfd, raw.vmsize);
4575 seg->fileoff = bfd_h_get_64 (abfd, raw.fileoff);
4576 seg->filesize = bfd_h_get_64 (abfd, raw.filesize);
4577 seg->maxprot = bfd_h_get_32 (abfd, raw.maxprot);
4578 seg->initprot = bfd_h_get_32 (abfd, raw.initprot);
4579 seg->nsects = bfd_h_get_32 (abfd, raw.nsects);
4580 seg->flags = bfd_h_get_32 (abfd, raw.flags);
1e8a024a
TG		 4581 }
4582 else
4583 {
46d1c23b
TG		 4584 struct mach_o_segment_command_32_external raw;
4585
1e8a024a
TG		 4586 BFD_ASSERT (command->type == BFD_MACH_O_LC_SEGMENT);
4587
47daa70f 4588 if (bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
07d6d2b8 4589 return FALSE;
1e8a024a 4590
46d1c23b 4591 memcpy (seg->segname, raw.segname, 16);
15e1c58a 4592 seg->segname[16] = '\0';
1e8a024a 4593
46d1c23b
TG		 4594 seg->vmaddr = bfd_h_get_32 (abfd, raw.vmaddr);
4595 seg->vmsize = bfd_h_get_32 (abfd, raw.vmsize);
4596 seg->fileoff = bfd_h_get_32 (abfd, raw.fileoff);
4597 seg->filesize = bfd_h_get_32 (abfd, raw.filesize);
4598 seg->maxprot = bfd_h_get_32 (abfd, raw.maxprot);
4599 seg->initprot = bfd_h_get_32 (abfd, raw.initprot);
4600 seg->nsects = bfd_h_get_32 (abfd, raw.nsects);
4601 seg->flags = bfd_h_get_32 (abfd, raw.flags);
1e8a024a 4602 }
9d4b6009
TG		 4603 seg->sect_head = NULL;
4604 seg->sect_tail = NULL;
3af9a47b 4605
f1bde64c 4606 for (i = 0; i < seg->nsects; i++)
3af9a47b 4607 {
f1bde64c 4608 asection *sec;
a95a4550 4609
47daa70f 4610 sec = bfd_mach_o_read_section (abfd, seg->initprot, wide);
f1bde64c 4611 if (sec == NULL)
07d6d2b8 4612 return FALSE;
f1bde64c 4613
c9ffd2ea
TG		 4614 bfd_mach_o_append_section_to_segment
4615 (seg, bfd_mach_o_get_mach_o_section (sec));
3af9a47b
NC		 4616 }
4617
452216ab 4618 return TRUE;
3af9a47b
NC		 4619}
4620
452216ab 4621static bfd_boolean
ab273af8 4622bfd_mach_o_read_segment_32 (bfd *abfd, bfd_mach_o_load_command *command)
1e8a024a 4623{
ab273af8 4624 return bfd_mach_o_read_segment (abfd, command, 0);
1e8a024a
TG		 4625}
4626
452216ab 4627static bfd_boolean
ab273af8 4628bfd_mach_o_read_segment_64 (bfd *abfd, bfd_mach_o_load_command *command)
1e8a024a 4629{
ab273af8 4630 return bfd_mach_o_read_segment (abfd, command, 1);
1e8a024a
TG		 4631}
4632
452216ab 4633static bfd_boolean
ab273af8 4634bfd_mach_o_read_command (bfd *abfd, bfd_mach_o_load_command *command)
3af9a47b 4635{
47daa70f 4636 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
46d1c23b
TG		 4637 struct mach_o_load_command_external raw;
4638 unsigned int cmd;
3af9a47b 4639
046b007d 4640 /* Read command type and length. */
47daa70f 4641 if (bfd_seek (abfd, mdata->hdr_offset + command->offset, SEEK_SET) != 0
46d1c23b 4642 || bfd_bread (&raw, BFD_MACH_O_LC_SIZE, abfd) != BFD_MACH_O_LC_SIZE)
452216ab 4643 return FALSE;
3af9a47b 4644
46d1c23b
TG		 4645 cmd = bfd_h_get_32 (abfd, raw.cmd);
4646 command->type = cmd & ~BFD_MACH_O_LC_REQ_DYLD;
4647 command->type_required = cmd & BFD_MACH_O_LC_REQ_DYLD ? TRUE : FALSE;
4648 command->len = bfd_h_get_32 (abfd, raw.cmdsize);
3af9a47b
NC		 4649
4650 switch (command->type)
4651 {
4652 case BFD_MACH_O_LC_SEGMENT:
452216ab
TG		 4653 if (!bfd_mach_o_read_segment_32 (abfd, command))
4654 return FALSE;
1e8a024a
TG		 4655 break;
4656 case BFD_MACH_O_LC_SEGMENT_64:
452216ab
TG		 4657 if (!bfd_mach_o_read_segment_64 (abfd, command))
4658 return FALSE;
3af9a47b
NC		 4659 break;
4660 case BFD_MACH_O_LC_SYMTAB:
452216ab
TG		 4661 if (!bfd_mach_o_read_symtab (abfd, command))
4662 return FALSE;
3af9a47b
NC		 4663 break;
4664 case BFD_MACH_O_LC_SYMSEG:
4665 break;
4666 case BFD_MACH_O_LC_THREAD:
4667 case BFD_MACH_O_LC_UNIXTHREAD:
452216ab
TG		 4668 if (!bfd_mach_o_read_thread (abfd, command))
4669 return FALSE;
3af9a47b
NC		 4670 break;
4671 case BFD_MACH_O_LC_LOAD_DYLINKER:
4672 case BFD_MACH_O_LC_ID_DYLINKER:
10be66a4 4673 case BFD_MACH_O_LC_DYLD_ENVIRONMENT:
452216ab
TG		 4674 if (!bfd_mach_o_read_dylinker (abfd, command))
4675 return FALSE;
3af9a47b
NC		 4676 break;
4677 case BFD_MACH_O_LC_LOAD_DYLIB:
fbe383b9 4678 case BFD_MACH_O_LC_LAZY_LOAD_DYLIB:
3af9a47b
NC		 4679 case BFD_MACH_O_LC_ID_DYLIB:
4680 case BFD_MACH_O_LC_LOAD_WEAK_DYLIB:
046b007d 4681 case BFD_MACH_O_LC_REEXPORT_DYLIB:
73017762 4682 case BFD_MACH_O_LC_LOAD_UPWARD_DYLIB:
452216ab
TG		 4683 if (!bfd_mach_o_read_dylib (abfd, command))
4684 return FALSE;
3af9a47b
NC		 4685 break;
4686 case BFD_MACH_O_LC_PREBOUND_DYLIB:
452216ab
TG		 4687 if (!bfd_mach_o_read_prebound_dylib (abfd, command))
4688 return FALSE;
3af9a47b
NC		 4689 break;
4690 case BFD_MACH_O_LC_LOADFVMLIB:
4691 case BFD_MACH_O_LC_IDFVMLIB:
452216ab
TG		 4692 if (!bfd_mach_o_read_fvmlib (abfd, command))
4693 return FALSE;
9f4a5bd1 4694 break;
3af9a47b
NC		 4695 case BFD_MACH_O_LC_IDENT:
4696 case BFD_MACH_O_LC_FVMFILE:
4697 case BFD_MACH_O_LC_PREPAGE:
4698 case BFD_MACH_O_LC_ROUTINES:
9b02d212 4699 case BFD_MACH_O_LC_ROUTINES_64:
046b007d 4700 break;
3af9a47b 4701 case BFD_MACH_O_LC_SUB_FRAMEWORK:
046b007d
TG		 4702 case BFD_MACH_O_LC_SUB_UMBRELLA:
4703 case BFD_MACH_O_LC_SUB_LIBRARY:
4704 case BFD_MACH_O_LC_SUB_CLIENT:
0c9b2b4c 4705 case BFD_MACH_O_LC_RPATH:
452216ab 4706 if (!bfd_mach_o_read_str (abfd, command))
07d6d2b8 4707 return FALSE;
3af9a47b
NC		 4708 break;
4709 case BFD_MACH_O_LC_DYSYMTAB:
452216ab
TG		 4710 if (!bfd_mach_o_read_dysymtab (abfd, command))
4711 return FALSE;
3af9a47b 4712 break;
3af9a47b 4713 case BFD_MACH_O_LC_PREBIND_CKSUM:
452216ab
TG		 4714 if (!bfd_mach_o_read_prebind_cksum (abfd, command))
4715 return FALSE;
7a79c514
TG		 4716 break;
4717 case BFD_MACH_O_LC_TWOLEVEL_HINTS:
452216ab
TG		 4718 if (!bfd_mach_o_read_twolevel_hints (abfd, command))
4719 return FALSE;
3af9a47b 4720 break;
15e1c58a 4721 case BFD_MACH_O_LC_UUID:
452216ab
TG		 4722 if (!bfd_mach_o_read_uuid (abfd, command))
4723 return FALSE;
15e1c58a
TG		 4724 break;
4725 case BFD_MACH_O_LC_CODE_SIGNATURE:
846b9259 4726 case BFD_MACH_O_LC_SEGMENT_SPLIT_INFO:
edbdea0e 4727 case BFD_MACH_O_LC_FUNCTION_STARTS:
1778ad74
TG		 4728 case BFD_MACH_O_LC_DATA_IN_CODE:
4729 case BFD_MACH_O_LC_DYLIB_CODE_SIGN_DRS:
47daa70f 4730 case BFD_MACH_O_LC_LINKER_OPTIMIZATION_HINT:
452216ab
TG		 4731 if (!bfd_mach_o_read_linkedit (abfd, command))
4732 return FALSE;
15e1c58a 4733 break;
fc55a902
TG		 4734 case BFD_MACH_O_LC_ENCRYPTION_INFO:
4735 if (!bfd_mach_o_read_encryption_info (abfd, command))
452216ab 4736 return FALSE;
fc55a902 4737 break;
47daa70f
TG		 4738 case BFD_MACH_O_LC_ENCRYPTION_INFO_64:
4739 if (!bfd_mach_o_read_encryption_info_64 (abfd, command))
4740 return FALSE;
4741 break;
ad86f1fb 4742 case BFD_MACH_O_LC_DYLD_INFO:
452216ab
TG		 4743 if (!bfd_mach_o_read_dyld_info (abfd, command))
4744 return FALSE;
ad86f1fb 4745 break;
edbdea0e
TG		 4746 case BFD_MACH_O_LC_VERSION_MIN_MACOSX:
4747 case BFD_MACH_O_LC_VERSION_MIN_IPHONEOS:
47daa70f 4748 case BFD_MACH_O_LC_VERSION_MIN_WATCHOS:
edbdea0e 4749 if (!bfd_mach_o_read_version_min (abfd, command))
452216ab 4750 return FALSE;
edbdea0e 4751 break;
1778ad74
TG		 4752 case BFD_MACH_O_LC_MAIN:
4753 if (!bfd_mach_o_read_main (abfd, command))
452216ab 4754 return FALSE;
1778ad74
TG		 4755 break;
4756 case BFD_MACH_O_LC_SOURCE_VERSION:
4757 if (!bfd_mach_o_read_source_version (abfd, command))
452216ab 4758 return FALSE;
1778ad74 4759 break;
3af9a47b 4760 default:
86eafac0 4761 command->len = 0;
d42c267e
AM		 4762 _bfd_error_handler (_("%B: unknown load command %#x"),
4763 abfd, command->type);
86eafac0 4764 return FALSE;
3af9a47b
NC		 4765 }
4766
452216ab 4767 return TRUE;
3af9a47b
NC		 4768}
4769
4770static void
116c20d2 4771bfd_mach_o_flatten_sections (bfd *abfd)
3af9a47b 4772{
046b007d 4773 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
c9ffd2ea 4774 bfd_mach_o_load_command *cmd;
3af9a47b 4775 long csect = 0;
a95a4550 4776
15e1c58a 4777 /* Count total number of sections. */
3af9a47b
NC		 4778 mdata->nsects = 0;
4779
c9ffd2ea 4780 for (cmd = mdata->first_command; cmd != NULL; cmd = cmd->next)
3af9a47b 4781 {
c9ffd2ea
TG		 4782 if (cmd->type == BFD_MACH_O_LC_SEGMENT
4783 || cmd->type == BFD_MACH_O_LC_SEGMENT_64)
3af9a47b 4784 {
c9ffd2ea 4785 bfd_mach_o_segment_command *seg = &cmd->command.segment;
e84d6fca 4786
3af9a47b
NC		 4787 mdata->nsects += seg->nsects;
4788 }
4789 }
4790
15e1c58a 4791 /* Allocate sections array. */
64d29018
NC		 4792 mdata->sections = bfd_alloc2 (abfd,
4793 mdata->nsects, sizeof (bfd_mach_o_section *));
15e1c58a
TG		 4794
4795 /* Fill the array. */
3af9a47b
NC		 4796 csect = 0;
4797
c9ffd2ea 4798 for (cmd = mdata->first_command; cmd != NULL; cmd = cmd->next)
3af9a47b 4799 {
c9ffd2ea
TG		 4800 if (cmd->type == BFD_MACH_O_LC_SEGMENT
4801 || cmd->type == BFD_MACH_O_LC_SEGMENT_64)
3af9a47b 4802 {
c9ffd2ea 4803 bfd_mach_o_segment_command *seg = &cmd->command.segment;
07d6d2b8 4804 bfd_mach_o_section *sec;
3af9a47b
NC		 4805
4806 BFD_ASSERT (csect + seg->nsects <= mdata->nsects);
4807
07d6d2b8 4808 for (sec = seg->sect_head; sec != NULL; sec = sec->next)
f1bde64c 4809 mdata->sections[csect++] = sec;
3af9a47b
NC		 4810 }
4811 }
4812}
4813
afbb9e17 4814static bfd_boolean
116c20d2 4815bfd_mach_o_scan_start_address (bfd *abfd)
3af9a47b 4816{
046b007d 4817 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
c9ffd2ea
TG		 4818 bfd_mach_o_thread_command *thr = NULL;
4819 bfd_mach_o_load_command *cmd;
3af9a47b
NC		 4820 unsigned long i;
4821
c9ffd2ea
TG		 4822 for (cmd = mdata->first_command; cmd != NULL; cmd = cmd->next)
4823 if (cmd->type == BFD_MACH_O_LC_THREAD
4824 || cmd->type == BFD_MACH_O_LC_UNIXTHREAD)
afbb9e17 4825 {
07d6d2b8
AM		 4826 thr = &cmd->command.thread;
4827 break;
afbb9e17 4828 }
c9ffd2ea 4829 else if (cmd->type == BFD_MACH_O_LC_MAIN && mdata->nsects > 1)
c0fd7846 4830 {
c9ffd2ea 4831 bfd_mach_o_main_command *main_cmd = &cmd->command.main;
c0fd7846 4832 bfd_mach_o_section *text_sect = mdata->sections[0];
c9ffd2ea 4833
c0fd7846
TG		 4834 if (text_sect)
4835 {
4836 abfd->start_address = main_cmd->entryoff
4837 + (text_sect->addr - text_sect->offset);
4838 return TRUE;
4839 }
4840 }
3af9a47b 4841
5ee43bc4 4842 /* An object file has no start address, so do not fail if not found. */
c9ffd2ea 4843 if (thr == NULL)
5ee43bc4 4844 return TRUE;
3af9a47b 4845
afbb9e17 4846 /* FIXME: create a subtarget hook ? */
c9ffd2ea 4847 for (i = 0; i < thr->nflavours; i++)
3af9a47b 4848 {
a95a4550 4849 if ((mdata->header.cputype == BFD_MACH_O_CPU_TYPE_I386)
c9ffd2ea 4850 && (thr->flavours[i].flavour == BFD_MACH_O_x86_THREAD_STATE32))
3af9a47b
NC		 4851 {
4852 unsigned char buf[4];
4853
c9ffd2ea 4854 if (bfd_seek (abfd, thr->flavours[i].offset + 40, SEEK_SET) != 0
07d6d2b8 4855 || bfd_bread (buf, 4, abfd) != 4)
afbb9e17 4856 return FALSE;
3af9a47b
NC		 4857
4858 abfd->start_address = bfd_h_get_32 (abfd, buf);
4859 }
a95a4550 4860 else if ((mdata->header.cputype == BFD_MACH_O_CPU_TYPE_POWERPC)
c9ffd2ea 4861 && (thr->flavours[i].flavour == BFD_MACH_O_PPC_THREAD_STATE))
3af9a47b
NC		 4862 {
4863 unsigned char buf[4];
4864
c9ffd2ea 4865 if (bfd_seek (abfd, thr->flavours[i].offset + 0, SEEK_SET) != 0
07d6d2b8 4866 || bfd_bread (buf, 4, abfd) != 4)
afbb9e17 4867 return FALSE;
3af9a47b
NC		 4868
4869 abfd->start_address = bfd_h_get_32 (abfd, buf);
4870 }
1e8a024a 4871 else if ((mdata->header.cputype == BFD_MACH_O_CPU_TYPE_POWERPC_64)
07d6d2b8
AM		 4872 && (thr->flavours[i].flavour == BFD_MACH_O_PPC_THREAD_STATE64))
4873 {
4874 unsigned char buf[8];
1e8a024a 4875
07d6d2b8
AM		 4876 if (bfd_seek (abfd, thr->flavours[i].offset + 0, SEEK_SET) != 0
4877 || bfd_bread (buf, 8, abfd) != 8)
4878 return FALSE;
1e8a024a 4879
07d6d2b8
AM		 4880 abfd->start_address = bfd_h_get_64 (abfd, buf);
4881 }
1e8a024a 4882 else if ((mdata->header.cputype == BFD_MACH_O_CPU_TYPE_X86_64)
07d6d2b8
AM		 4883 && (thr->flavours[i].flavour == BFD_MACH_O_x86_THREAD_STATE64))
4884 {
4885 unsigned char buf[8];
1e8a024a 4886
07d6d2b8
AM		 4887 if (bfd_seek (abfd, thr->flavours[i].offset + (16 * 8), SEEK_SET) != 0
4888 || bfd_bread (buf, 8, abfd) != 8)
4889 return FALSE;
1e8a024a 4890
07d6d2b8
AM		 4891 abfd->start_address = bfd_h_get_64 (abfd, buf);
4892 }
3af9a47b
NC		 4893 }
4894
afbb9e17 4895 return TRUE;
3af9a47b
NC		 4896}
4897
42fa0891
TG		 4898bfd_boolean
4899bfd_mach_o_set_arch_mach (bfd *abfd,
07d6d2b8
AM		 4900 enum bfd_architecture arch,
4901 unsigned long machine)
42fa0891
TG		 4902{
4903 bfd_mach_o_backend_data *bed = bfd_mach_o_get_backend_data (abfd);
4904
4905 /* If this isn't the right architecture for this backend, and this
4906 isn't the generic backend, fail. */
4907 if (arch != bed->arch
4908 && arch != bfd_arch_unknown
4909 && bed->arch != bfd_arch_unknown)
4910 return FALSE;
4911
4912 return bfd_default_set_arch_mach (abfd, arch, machine);
4913}
4914
afbb9e17 4915static bfd_boolean
116c20d2
NC		 4916bfd_mach_o_scan (bfd *abfd,
4917 bfd_mach_o_header *header,
4918 bfd_mach_o_data_struct *mdata)
3af9a47b
NC		 4919{
4920 unsigned int i;
3af9a47b
NC		 4921 enum bfd_architecture cputype;
4922 unsigned long cpusubtype;
1e8a024a
TG		 4923 unsigned int hdrsize;
4924
c2f09c75 4925 hdrsize = mach_o_wide_p (header) ?
154a1ee5 4926 BFD_MACH_O_HEADER_64_SIZE : BFD_MACH_O_HEADER_SIZE;
3af9a47b 4927
3af9a47b 4928 mdata->header = *header;
3af9a47b 4929
154a1ee5 4930 abfd->flags = abfd->flags & BFD_IN_MEMORY;
15e1c58a
TG		 4931 switch (header->filetype)
4932 {
4933 case BFD_MACH_O_MH_OBJECT:
4934 abfd->flags |= HAS_RELOC;
4935 break;
4936 case BFD_MACH_O_MH_EXECUTE:
4937 abfd->flags |= EXEC_P;
4938 break;
4939 case BFD_MACH_O_MH_DYLIB:
4940 case BFD_MACH_O_MH_BUNDLE:
4941 abfd->flags |= DYNAMIC;
4942 break;
4943 }
4944
3af9a47b
NC		 4945 abfd->tdata.mach_o_data = mdata;
4946
e84d6fca
AM		 4947 bfd_mach_o_convert_architecture (header->cputype, header->cpusubtype,
4948 &cputype, &cpusubtype);
3af9a47b
NC		 4949 if (cputype == bfd_arch_unknown)
4950 {
4eca0228 4951 _bfd_error_handler
695344c0 4952 /* xgettext:c-format */
07d6d2b8
AM		 4953 (_("bfd_mach_o_scan: unknown architecture 0x%lx/0x%lx"),
4954 header->cputype, header->cpusubtype);
afbb9e17 4955 return FALSE;
3af9a47b
NC		 4956 }
4957
4958 bfd_set_arch_mach (abfd, cputype, cpusubtype);
a95a4550 4959
3af9a47b
NC		 4960 if (header->ncmds != 0)
4961 {
c9ffd2ea
TG		 4962 bfd_mach_o_load_command *cmd;
4963
4964 mdata->first_command = NULL;
4965 mdata->last_command = NULL;
64d29018
NC		 4966
4967 cmd = bfd_alloc2 (abfd, header->ncmds, sizeof (bfd_mach_o_load_command));
c9ffd2ea 4968 if (cmd == NULL)
afbb9e17 4969 return FALSE;
a95a4550 4970
3af9a47b
NC		 4971 for (i = 0; i < header->ncmds; i++)
4972 {
c9ffd2ea
TG		 4973 bfd_mach_o_load_command *cur = &cmd[i];
4974
4975 bfd_mach_o_append_command (abfd, cur);
3af9a47b
NC		 4976
4977 if (i == 0)
1e8a024a 4978 cur->offset = hdrsize;
3af9a47b
NC		 4979 else
4980 {
c9ffd2ea 4981 bfd_mach_o_load_command *prev = &cmd[i - 1];
3af9a47b
NC		 4982 cur->offset = prev->offset + prev->len;
4983 }
4984
452216ab 4985 if (!bfd_mach_o_read_command (abfd, cur))
afbb9e17 4986 return FALSE;
a95a4550 4987 }
3af9a47b
NC		 4988 }
4989
c0fd7846
TG		 4990 /* Sections should be flatten before scanning start address. */
4991 bfd_mach_o_flatten_sections (abfd);
4992 if (!bfd_mach_o_scan_start_address (abfd))
afbb9e17 4993 return FALSE;
3af9a47b 4994
afbb9e17 4995 return TRUE;
3af9a47b
NC		 4996}
4997
b34976b6 4998bfd_boolean
154a1ee5 4999bfd_mach_o_mkobject_init (bfd *abfd)
3af9a47b
NC		 5000{
5001 bfd_mach_o_data_struct *mdata = NULL;
5002
b30a5d18 5003 mdata = bfd_zalloc (abfd, sizeof (bfd_mach_o_data_struct));
3af9a47b 5004 if (mdata == NULL)
b34976b6 5005 return FALSE;
3af9a47b
NC		 5006 abfd->tdata.mach_o_data = mdata;
5007
5008 mdata->header.magic = 0;
5009 mdata->header.cputype = 0;
5010 mdata->header.cpusubtype = 0;
5011 mdata->header.filetype = 0;
5012 mdata->header.ncmds = 0;
5013 mdata->header.sizeofcmds = 0;
5014 mdata->header.flags = 0;
5015 mdata->header.byteorder = BFD_ENDIAN_UNKNOWN;
c9ffd2ea
TG		 5016 mdata->first_command = NULL;
5017 mdata->last_command = NULL;
3af9a47b
NC		 5018 mdata->nsects = 0;
5019 mdata->sections = NULL;
4434114c 5020 mdata->dyn_reloc_cache = NULL;
3af9a47b 5021
b34976b6 5022 return TRUE;
3af9a47b
NC		 5023}
5024
42fa0891
TG		 5025static bfd_boolean
5026bfd_mach_o_gen_mkobject (bfd *abfd)
5027{
5028 bfd_mach_o_data_struct *mdata;
5029
5030 if (!bfd_mach_o_mkobject_init (abfd))
5031 return FALSE;
5032
5033 mdata = bfd_mach_o_get_data (abfd);
5034 mdata->header.magic = BFD_MACH_O_MH_MAGIC;
5035 mdata->header.cputype = 0;
5036 mdata->header.cpusubtype = 0;
5037 mdata->header.byteorder = abfd->xvec->byteorder;
5038 mdata->header.version = 1;
5039
5040 return TRUE;
5041}
5042
3af9a47b 5043const bfd_target *
154a1ee5 5044bfd_mach_o_header_p (bfd *abfd,
47daa70f 5045 file_ptr hdr_off,
07d6d2b8
AM		 5046 bfd_mach_o_filetype filetype,
5047 bfd_mach_o_cpu_type cputype)
3af9a47b
NC		 5048{
5049 bfd_mach_o_header header;
c9ba0c87 5050 bfd_mach_o_data_struct *mdata;
3af9a47b 5051
47daa70f 5052 if (!bfd_mach_o_read_header (abfd, hdr_off, &header))
e84d6fca 5053 goto wrong;
3af9a47b 5054
e84d6fca
AM		 5055 if (! (header.byteorder == BFD_ENDIAN_BIG
5056 || header.byteorder == BFD_ENDIAN_LITTLE))
3af9a47b 5057 {
d42c267e
AM		 5058 _bfd_error_handler (_("unknown header byte-order value %#x"),
5059 header.byteorder);
e84d6fca 5060 goto wrong;
3af9a47b
NC		 5061 }
5062
e84d6fca
AM		 5063 if (! ((header.byteorder == BFD_ENDIAN_BIG
5064 && abfd->xvec->byteorder == BFD_ENDIAN_BIG
5065 && abfd->xvec->header_byteorder == BFD_ENDIAN_BIG)
5066 || (header.byteorder == BFD_ENDIAN_LITTLE
5067 && abfd->xvec->byteorder == BFD_ENDIAN_LITTLE
5068 && abfd->xvec->header_byteorder == BFD_ENDIAN_LITTLE)))
5069 goto wrong;
3af9a47b 5070
154a1ee5
TG		 5071 /* Check cputype and filetype.
5072 In case of wildcard, do not accept magics that are handled by existing
5073 targets. */
5074 if (cputype)
5075 {
5076 if (header.cputype != cputype)
07d6d2b8 5077 goto wrong;
154a1ee5 5078 }
26954155
TG		 5079 else
5080 {
5081#ifndef BFD64
5082 /* Do not recognize 64 architectures if not configured for 64bit targets.
5083 This could happen only for generic targets. */
5084 if (mach_o_wide_p (&header))
5085 goto wrong;
5086#endif
5087 }
b22161d6 5088
154a1ee5
TG		 5089 if (filetype)
5090 {
5091 if (header.filetype != filetype)
07d6d2b8 5092 goto wrong;
154a1ee5
TG		 5093 }
5094 else
5095 {
5096 switch (header.filetype)
07d6d2b8
AM		 5097 {
5098 case BFD_MACH_O_MH_CORE:
5099 /* Handled by core_p */
5100 goto wrong;
5101 default:
5102 break;
5103 }
154a1ee5
TG		 5104 }
5105
c9ba0c87
AM		 5106 mdata = (bfd_mach_o_data_struct *) bfd_zalloc (abfd, sizeof (*mdata));
5107 if (mdata == NULL)
e84d6fca 5108 goto fail;
47daa70f 5109 mdata->hdr_offset = hdr_off;
3af9a47b 5110
c9ba0c87 5111 if (!bfd_mach_o_scan (abfd, &header, mdata))
e84d6fca 5112 goto wrong;
a95a4550 5113
3af9a47b 5114 return abfd->xvec;
e84d6fca
AM		 5115
5116 wrong:
5117 bfd_set_error (bfd_error_wrong_format);
5118
5119 fail:
e84d6fca 5120 return NULL;
3af9a47b
NC		 5121}
5122
154a1ee5
TG		 5123static const bfd_target *
5124bfd_mach_o_gen_object_p (bfd *abfd)
3af9a47b 5125{
47daa70f 5126 return bfd_mach_o_header_p (abfd, 0, 0, 0);
154a1ee5 5127}
e84d6fca 5128
154a1ee5
TG		 5129static const bfd_target *
5130bfd_mach_o_gen_core_p (bfd *abfd)
5131{
47daa70f 5132 return bfd_mach_o_header_p (abfd, 0, BFD_MACH_O_MH_CORE, 0);
3af9a47b
NC		 5133}
5134
3cc27770
TG		 5135/* Return the base address of ABFD, ie the address at which the image is
5136 mapped. The possible initial pagezero is ignored. */
5137
5138bfd_vma
5139bfd_mach_o_get_base_address (bfd *abfd)
5140{
5141 bfd_mach_o_data_struct *mdata;
c9ffd2ea 5142 bfd_mach_o_load_command *cmd;
3cc27770
TG		 5143
5144 /* Check for Mach-O. */
5145 if (!bfd_mach_o_valid (abfd))
5146 return 0;
5147 mdata = bfd_mach_o_get_data (abfd);
5148
c9ffd2ea 5149 for (cmd = mdata->first_command; cmd != NULL; cmd = cmd->next)
3cc27770 5150 {
3cc27770
TG		 5151 if ((cmd->type == BFD_MACH_O_LC_SEGMENT
5152 || cmd->type == BFD_MACH_O_LC_SEGMENT_64))
5153 {
5154 struct bfd_mach_o_segment_command *segcmd = &cmd->command.segment;
5155
5156 if (segcmd->initprot != 0)
5157 return segcmd->vmaddr;
5158 }
5159 }
5160 return 0;
5161}
5162
3af9a47b
NC		 5163typedef struct mach_o_fat_archentry
5164{
5165 unsigned long cputype;
5166 unsigned long cpusubtype;
5167 unsigned long offset;
5168 unsigned long size;
5169 unsigned long align;
3af9a47b
NC		 5170} mach_o_fat_archentry;
5171
5172typedef struct mach_o_fat_data_struct
5173{
5174 unsigned long magic;
5175 unsigned long nfat_arch;
5176 mach_o_fat_archentry *archentries;
5177} mach_o_fat_data_struct;
5178
5179const bfd_target *
47daa70f 5180bfd_mach_o_fat_archive_p (bfd *abfd)
3af9a47b 5181{
e84d6fca 5182 mach_o_fat_data_struct *adata = NULL;
46d1c23b 5183 struct mach_o_fat_header_external hdr;
3af9a47b
NC		 5184 unsigned long i;
5185
c2f09c75 5186 if (bfd_seek (abfd, 0, SEEK_SET) != 0
46d1c23b 5187 || bfd_bread (&hdr, sizeof (hdr), abfd) != sizeof (hdr))
e84d6fca 5188 goto error;
3af9a47b 5189
116c20d2 5190 adata = bfd_alloc (abfd, sizeof (mach_o_fat_data_struct));
3af9a47b 5191 if (adata == NULL)
e84d6fca 5192 goto error;
a95a4550 5193
46d1c23b
TG		 5194 adata->magic = bfd_getb32 (hdr.magic);
5195 adata->nfat_arch = bfd_getb32 (hdr.nfat_arch);
3af9a47b 5196 if (adata->magic != 0xcafebabe)
e84d6fca 5197 goto error;
27cc28f9
AS		 5198 /* Avoid matching Java bytecode files, which have the same magic number.
5199 In the Java bytecode file format this field contains the JVM version,
5200 which starts at 43.0. */
5201 if (adata->nfat_arch > 30)
5202 goto error;
3af9a47b 5203
c2f09c75 5204 adata->archentries =
64d29018 5205 bfd_alloc2 (abfd, adata->nfat_arch, sizeof (mach_o_fat_archentry));
3af9a47b 5206 if (adata->archentries == NULL)
e84d6fca 5207 goto error;
3af9a47b
NC		 5208
5209 for (i = 0; i < adata->nfat_arch; i++)
5210 {
46d1c23b
TG		 5211 struct mach_o_fat_arch_external arch;
5212 if (bfd_bread (&arch, sizeof (arch), abfd) != sizeof (arch))
e84d6fca 5213 goto error;
46d1c23b
TG		 5214 adata->archentries[i].cputype = bfd_getb32 (arch.cputype);
5215 adata->archentries[i].cpusubtype = bfd_getb32 (arch.cpusubtype);
5216 adata->archentries[i].offset = bfd_getb32 (arch.offset);
5217 adata->archentries[i].size = bfd_getb32 (arch.size);
5218 adata->archentries[i].align = bfd_getb32 (arch.align);
3af9a47b
NC		 5219 }
5220
5221 abfd->tdata.mach_o_fat_data = adata;
64d29018 5222
3af9a47b 5223 return abfd->xvec;
e84d6fca
AM		 5224
5225 error:
5226 if (adata != NULL)
5227 bfd_release (abfd, adata);
5228 bfd_set_error (bfd_error_wrong_format);
5229 return NULL;
3af9a47b
NC		 5230}
5231
a4e241ca
TG		 5232/* Set the filename for a fat binary member ABFD, whose bfd architecture is
5233 ARCH_TYPE/ARCH_SUBTYPE and corresponding entry in header is ENTRY.
5234 Set arelt_data and origin fields too. */
5235
5236static void
5237bfd_mach_o_fat_member_init (bfd *abfd,
07d6d2b8
AM		 5238 enum bfd_architecture arch_type,
5239 unsigned long arch_subtype,
5240 mach_o_fat_archentry *entry)
a4e241ca
TG		 5241{
5242 struct areltdata *areltdata;
5243 /* Create the member filename. Use ARCH_NAME. */
5244 const bfd_arch_info_type *ap = bfd_lookup_arch (arch_type, arch_subtype);
5245
5246 if (ap)
5247 {
5248 /* Use the architecture name if known. */
1be5090b 5249 abfd->filename = xstrdup (ap->printable_name);
a4e241ca
TG		 5250 }
5251 else
5252 {
5253 /* Forge a uniq id. */
5254 const size_t namelen = 2 + 8 + 1 + 2 + 8 + 1;
1be5090b 5255 char *name = xmalloc (namelen);
a4e241ca 5256 snprintf (name, namelen, "0x%lx-0x%lx",
07d6d2b8 5257 entry->cputype, entry->cpusubtype);
a4e241ca
TG		 5258 abfd->filename = name;
5259 }
5260
06e7acd7 5261 areltdata = bfd_zmalloc (sizeof (struct areltdata));
a4e241ca
TG		 5262 areltdata->parsed_size = entry->size;
5263 abfd->arelt_data = areltdata;
5264 abfd->iostream = NULL;
5265 abfd->origin = entry->offset;
5266}
5267
3af9a47b 5268bfd *
47daa70f 5269bfd_mach_o_fat_openr_next_archived_file (bfd *archive, bfd *prev)
3af9a47b 5270{
e84d6fca 5271 mach_o_fat_data_struct *adata;
3af9a47b
NC		 5272 mach_o_fat_archentry *entry = NULL;
5273 unsigned long i;
15e1c58a 5274 bfd *nbfd;
15e1c58a
TG		 5275 enum bfd_architecture arch_type;
5276 unsigned long arch_subtype;
3af9a47b 5277
e84d6fca 5278 adata = (mach_o_fat_data_struct *) archive->tdata.mach_o_fat_data;
3af9a47b
NC		 5279 BFD_ASSERT (adata != NULL);
5280
5281 /* Find index of previous entry. */
5282 if (prev == NULL)
a4e241ca
TG		 5283 {
5284 /* Start at first one. */
5285 i = 0;
5286 }
3af9a47b
NC		 5287 else
5288 {
a4e241ca 5289 /* Find index of PREV. */
3af9a47b
NC		 5290 for (i = 0; i < adata->nfat_arch; i++)
5291 {
15e1c58a 5292 if (adata->archentries[i].offset == prev->origin)
3af9a47b
NC		 5293 break;
5294 }
5295
5296 if (i == adata->nfat_arch)
5297 {
5298 /* Not found. */
5299 bfd_set_error (bfd_error_bad_value);
a95a4550 5300 return NULL;
3af9a47b 5301 }
a4e241ca
TG		 5302
5303 /* Get next entry. */
5304 i++;
5305 }
a95a4550 5306
3af9a47b
NC		 5307 if (i >= adata->nfat_arch)
5308 {
5309 bfd_set_error (bfd_error_no_more_archived_files);
5310 return NULL;
5311 }
5312
5313 entry = &adata->archentries[i];
15e1c58a
TG		 5314 nbfd = _bfd_new_bfd_contained_in (archive);
5315 if (nbfd == NULL)
5316 return NULL;
5317
15e1c58a
TG		 5318 bfd_mach_o_convert_architecture (entry->cputype, entry->cpusubtype,
5319 &arch_type, &arch_subtype);
846b9259 5320
a4e241ca
TG		 5321 bfd_mach_o_fat_member_init (nbfd, arch_type, arch_subtype, entry);
5322
846b9259 5323 bfd_set_arch_mach (nbfd, arch_type, arch_subtype);
3af9a47b 5324
15e1c58a 5325 return nbfd;
3af9a47b
NC		 5326}
5327
15bbba8d
TG		 5328/* Analogous to stat call. */
5329
5330static int
5331bfd_mach_o_fat_stat_arch_elt (bfd *abfd, struct stat *buf)
5332{
5333 if (abfd->arelt_data == NULL)
5334 {
5335 bfd_set_error (bfd_error_invalid_operation);
5336 return -1;
5337 }
5338
5339 buf->st_mtime = 0;
5340 buf->st_uid = 0;
5341 buf->st_gid = 0;
5342 buf->st_mode = 0644;
5343 buf->st_size = arelt_size (abfd);
5344
5345 return 0;
5346}
5347
846b9259
TG		 5348/* If ABFD format is FORMAT and architecture is ARCH, return it.
5349 If ABFD is a fat image containing a member that corresponds to FORMAT
5350 and ARCH, returns it.
5351 In other case, returns NULL.
5352 This function allows transparent uses of fat images. */
a4e241ca 5353
846b9259
TG		 5354bfd *
5355bfd_mach_o_fat_extract (bfd *abfd,
5356 bfd_format format,
5357 const bfd_arch_info_type *arch)
5358{
5359 bfd *res;
5360 mach_o_fat_data_struct *adata;
5361 unsigned int i;
5362
5363 if (bfd_check_format (abfd, format))
5364 {
5365 if (bfd_get_arch_info (abfd) == arch)
5366 return abfd;
5367 return NULL;
5368 }
5369 if (!bfd_check_format (abfd, bfd_archive)
5370 || abfd->xvec != &mach_o_fat_vec)
5371 return NULL;
c2f09c75 5372
846b9259
TG		 5373 /* This is a Mach-O fat image. */
5374 adata = (mach_o_fat_data_struct *) abfd->tdata.mach_o_fat_data;
5375 BFD_ASSERT (adata != NULL);
5376
5377 for (i = 0; i < adata->nfat_arch; i++)
5378 {
5379 struct mach_o_fat_archentry *e = &adata->archentries[i];
5380 enum bfd_architecture cpu_type;
5381 unsigned long cpu_subtype;
5382
5383 bfd_mach_o_convert_architecture (e->cputype, e->cpusubtype,
5384 &cpu_type, &cpu_subtype);
5385 if (cpu_type != arch->arch || cpu_subtype != arch->mach)
5386 continue;
5387
5388 /* The architecture is found. */
5389 res = _bfd_new_bfd_contained_in (abfd);
5390 if (res == NULL)
5391 return NULL;
5392
a4e241ca 5393 bfd_mach_o_fat_member_init (res, cpu_type, cpu_subtype, e);
846b9259
TG		 5394
5395 if (bfd_check_format (res, format))
5396 {
5397 BFD_ASSERT (bfd_get_arch_info (res) == arch);
5398 return res;
5399 }
5400 bfd_close (res);
5401 return NULL;
5402 }
5403
5404 return NULL;
5405}
5406
3af9a47b 5407int
116c20d2
NC		 5408bfd_mach_o_lookup_command (bfd *abfd,
5409 bfd_mach_o_load_command_type type,
5410 bfd_mach_o_load_command **mcommand)
3af9a47b 5411{
c9ffd2ea
TG		 5412 struct mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
5413 struct bfd_mach_o_load_command *cmd;
5414 unsigned int num;
3af9a47b 5415
c9ffd2ea 5416 BFD_ASSERT (mdata != NULL);
3af9a47b
NC		 5417 BFD_ASSERT (mcommand != NULL);
5418
5419 num = 0;
c9ffd2ea 5420 for (cmd = mdata->first_command; cmd != NULL; cmd = cmd->next)
3af9a47b 5421 {
3af9a47b
NC		 5422 if (cmd->type != type)
5423 continue;
5424
5425 if (num == 0)
c9ffd2ea 5426 *mcommand = cmd;
3af9a47b
NC		 5427 num++;
5428 }
5429
3af9a47b
NC		 5430 return num;
5431}
5432
5433unsigned long
116c20d2 5434bfd_mach_o_stack_addr (enum bfd_mach_o_cpu_type type)
3af9a47b
NC		 5435{
5436 switch (type)
5437 {
5438 case BFD_MACH_O_CPU_TYPE_MC680x0:
5439 return 0x04000000;
5440 case BFD_MACH_O_CPU_TYPE_MC88000:
5441 return 0xffffe000;
5442 case BFD_MACH_O_CPU_TYPE_POWERPC:
5443 return 0xc0000000;
5444 case BFD_MACH_O_CPU_TYPE_I386:
5445 return 0xc0000000;
5446 case BFD_MACH_O_CPU_TYPE_SPARC:
5447 return 0xf0000000;
5448 case BFD_MACH_O_CPU_TYPE_I860:
5449 return 0;
5450 case BFD_MACH_O_CPU_TYPE_HPPA:
e84d6fca 5451 return 0xc0000000 - 0x04000000;
3af9a47b
NC		 5452 default:
5453 return 0;
5454 }
5455}
5456
ab76eeaf
IS		 5457/* The following two tables should be kept, as far as possible, in order of
5458 most frequently used entries to optimize their use from gas. */
5459
c5012cd8 5460const bfd_mach_o_xlat_name bfd_mach_o_section_type_name[] =
046b007d
TG		 5461{
5462 { "regular", BFD_MACH_O_S_REGULAR},
ab76eeaf 5463 { "coalesced", BFD_MACH_O_S_COALESCED},
046b007d
TG		 5464 { "zerofill", BFD_MACH_O_S_ZEROFILL},
5465 { "cstring_literals", BFD_MACH_O_S_CSTRING_LITERALS},
5466 { "4byte_literals", BFD_MACH_O_S_4BYTE_LITERALS},
5467 { "8byte_literals", BFD_MACH_O_S_8BYTE_LITERALS},
ab76eeaf 5468 { "16byte_literals", BFD_MACH_O_S_16BYTE_LITERALS},
046b007d 5469 { "literal_pointers", BFD_MACH_O_S_LITERAL_POINTERS},
046b007d
TG		 5470 { "mod_init_func_pointers", BFD_MACH_O_S_MOD_INIT_FUNC_POINTERS},
5471 { "mod_fini_func_pointers", BFD_MACH_O_S_MOD_FINI_FUNC_POINTERS},
046b007d
TG		 5472 { "gb_zerofill", BFD_MACH_O_S_GB_ZEROFILL},
5473 { "interposing", BFD_MACH_O_S_INTERPOSING},
046b007d 5474 { "dtrace_dof", BFD_MACH_O_S_DTRACE_DOF},
ab76eeaf
IS		 5475 { "non_lazy_symbol_pointers", BFD_MACH_O_S_NON_LAZY_SYMBOL_POINTERS},
5476 { "lazy_symbol_pointers", BFD_MACH_O_S_LAZY_SYMBOL_POINTERS},
a4551119 5477 { "symbol_stubs", BFD_MACH_O_S_SYMBOL_STUBS},
046b007d
TG		 5478 { "lazy_dylib_symbol_pointers", BFD_MACH_O_S_LAZY_DYLIB_SYMBOL_POINTERS},
5479 { NULL, 0}
5480};
5481
c5012cd8 5482const bfd_mach_o_xlat_name bfd_mach_o_section_attribute_name[] =
046b007d 5483{
ab76eeaf
IS		 5484 { "pure_instructions", BFD_MACH_O_S_ATTR_PURE_INSTRUCTIONS },
5485 { "some_instructions", BFD_MACH_O_S_ATTR_SOME_INSTRUCTIONS },
046b007d
TG		 5486 { "loc_reloc", BFD_MACH_O_S_ATTR_LOC_RELOC },
5487 { "ext_reloc", BFD_MACH_O_S_ATTR_EXT_RELOC },
046b007d 5488 { "debug", BFD_MACH_O_S_ATTR_DEBUG },
046b007d
TG		 5489 { "live_support", BFD_MACH_O_S_ATTR_LIVE_SUPPORT },
5490 { "no_dead_strip", BFD_MACH_O_S_ATTR_NO_DEAD_STRIP },
5491 { "strip_static_syms", BFD_MACH_O_S_ATTR_STRIP_STATIC_SYMS },
5492 { "no_toc", BFD_MACH_O_S_ATTR_NO_TOC },
a4551119 5493 { "self_modifying_code", BFD_MACH_O_S_SELF_MODIFYING_CODE },
ab76eeaf 5494 { "modifying_code", BFD_MACH_O_S_SELF_MODIFYING_CODE },
046b007d
TG		 5495 { NULL, 0}
5496};
5497
a4551119 5498/* Get the section type from NAME. Return 256 if NAME is unknown. */
53d58d96
TG		 5499
5500unsigned int
ab76eeaf 5501bfd_mach_o_get_section_type_from_name (bfd *abfd, const char *name)
53d58d96 5502{
afbb9e17 5503 const bfd_mach_o_xlat_name *x;
ab76eeaf 5504 bfd_mach_o_backend_data *bed = bfd_mach_o_get_backend_data (abfd);
53d58d96
TG		 5505
5506 for (x = bfd_mach_o_section_type_name; x->name; x++)
5507 if (strcmp (x->name, name) == 0)
ab76eeaf
IS		 5508 {
5509 /* We found it... does the target support it? */
5510 if (bed->bfd_mach_o_section_type_valid_for_target == NULL
5511 || bed->bfd_mach_o_section_type_valid_for_target (x->val))
5512 return x->val; /* OK. */
5513 else
5514 break; /* Not supported. */
5515 }
a4551119
TG		 5516 /* Maximum section ID = 0xff. */
5517 return 256;
53d58d96
TG		 5518}
5519
5520/* Get the section attribute from NAME. Return -1 if NAME is unknown. */
5521
5522unsigned int
5523bfd_mach_o_get_section_attribute_from_name (const char *name)
5524{
afbb9e17 5525 const bfd_mach_o_xlat_name *x;
53d58d96
TG		 5526
5527 for (x = bfd_mach_o_section_attribute_name; x->name; x++)
5528 if (strcmp (x->name, name) == 0)
5529 return x->val;
5530 return (unsigned int)-1;
5531}
5532
3af9a47b 5533int
116c20d2
NC		 5534bfd_mach_o_core_fetch_environment (bfd *abfd,
5535 unsigned char **rbuf,
5536 unsigned int *rlen)
3af9a47b 5537{
046b007d 5538 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
3af9a47b 5539 unsigned long stackaddr = bfd_mach_o_stack_addr (mdata->header.cputype);
c9ffd2ea 5540 bfd_mach_o_load_command *cmd;
3af9a47b 5541
c9ffd2ea 5542 for (cmd = mdata->first_command; cmd != NULL; cmd = cmd->next)
3af9a47b 5543 {
c9ffd2ea 5544 bfd_mach_o_segment_command *seg;
3af9a47b 5545
c9ffd2ea 5546 if (cmd->type != BFD_MACH_O_LC_SEGMENT)
3af9a47b
NC		 5547 continue;
5548
c9ffd2ea 5549 seg = &cmd->command.segment;
3af9a47b
NC		 5550
5551 if ((seg->vmaddr + seg->vmsize) == stackaddr)
5552 {
5553 unsigned long start = seg->fileoff;
5554 unsigned long end = seg->fileoff + seg->filesize;
5555 unsigned char *buf = bfd_malloc (1024);
5556 unsigned long size = 1024;
5557
5558 for (;;)
5559 {
5560 bfd_size_type nread = 0;
5561 unsigned long offset;
5562 int found_nonnull = 0;
5563
5564 if (size > (end - start))
5565 size = (end - start);
5566
515ef31d
NC		 5567 buf = bfd_realloc_or_free (buf, size);
5568 if (buf == NULL)
5569 return -1;
c2f09c75
TG		 5570
5571 if (bfd_seek (abfd, end - size, SEEK_SET) != 0)
07d6d2b8
AM		 5572 {
5573 free (buf);
5574 return -1;
5575 }
c2f09c75 5576
3af9a47b 5577 nread = bfd_bread (buf, size, abfd);
a95a4550 5578
3af9a47b 5579 if (nread != size)
515ef31d
NC		 5580 {
5581 free (buf);
5582 return -1;
5583 }
a95a4550 5584
3af9a47b
NC		 5585 for (offset = 4; offset <= size; offset += 4)
5586 {
e84d6fca 5587 unsigned long val;
3af9a47b 5588
e84d6fca 5589 val = *((unsigned long *) (buf + size - offset));
3af9a47b
NC		 5590 if (! found_nonnull)
5591 {
5592 if (val != 0)
5593 found_nonnull = 1;
5594 }
5595 else if (val == 0x0)
5596 {
e84d6fca
AM		 5597 unsigned long bottom;
5598 unsigned long top;
3af9a47b 5599
e84d6fca
AM		 5600 bottom = seg->fileoff + seg->filesize - offset;
5601 top = seg->fileoff + seg->filesize - 4;
3af9a47b
NC		 5602 *rbuf = bfd_malloc (top - bottom);
5603 *rlen = top - bottom;
5604
5605 memcpy (*rbuf, buf + size - *rlen, *rlen);
515ef31d 5606 free (buf);
3af9a47b
NC		 5607 return 0;
5608 }
5609 }
5610
5611 if (size == (end - start))
5612 break;
5613
5614 size *= 2;
5615 }
515ef31d
NC		 5616
5617 free (buf);
3af9a47b
NC		 5618 }
5619 }
5620
5621 return -1;
5622}
5623
5624char *
116c20d2 5625bfd_mach_o_core_file_failing_command (bfd *abfd)
3af9a47b
NC		 5626{
5627 unsigned char *buf = NULL;
5628 unsigned int len = 0;
452216ab 5629 int ret;
3af9a47b
NC		 5630
5631 ret = bfd_mach_o_core_fetch_environment (abfd, &buf, &len);
5632 if (ret < 0)
5633 return NULL;
5634
f075ee0c 5635 return (char *) buf;
3af9a47b
NC		 5636}
5637
5638int
116c20d2 5639bfd_mach_o_core_file_failing_signal (bfd *abfd ATTRIBUTE_UNUSED)
3af9a47b
NC		 5640{
5641 return 0;
5642}
5643
2ca7691a
TG		 5644static bfd_mach_o_uuid_command *
5645bfd_mach_o_lookup_uuid_command (bfd *abfd)
5646{
09fe2662 5647 bfd_mach_o_load_command *uuid_cmd = NULL;
2ca7691a 5648 int ncmd = bfd_mach_o_lookup_command (abfd, BFD_MACH_O_LC_UUID, &uuid_cmd);
09fe2662 5649 if (ncmd != 1 || uuid_cmd == NULL)
2ca7691a
TG		 5650 return FALSE;
5651 return &uuid_cmd->command.uuid;
5652}
5653
5654/* Return true if ABFD is a dSYM file and its UUID matches UUID_CMD. */
5655
5656static bfd_boolean
5657bfd_mach_o_dsym_for_uuid_p (bfd *abfd, const bfd_mach_o_uuid_command *uuid_cmd)
5658{
5659 bfd_mach_o_uuid_command *dsym_uuid_cmd;
5660
5661 BFD_ASSERT (abfd);
5662 BFD_ASSERT (uuid_cmd);
5663
5664 if (!bfd_check_format (abfd, bfd_object))
5665 return FALSE;
5666
5667 if (bfd_get_flavour (abfd) != bfd_target_mach_o_flavour
5668 || bfd_mach_o_get_data (abfd) == NULL
5669 || bfd_mach_o_get_data (abfd)->header.filetype != BFD_MACH_O_MH_DSYM)
5670 return FALSE;
5671
5672 dsym_uuid_cmd = bfd_mach_o_lookup_uuid_command (abfd);
5673 if (dsym_uuid_cmd == NULL)
5674 return FALSE;
5675
5676 if (memcmp (uuid_cmd->uuid, dsym_uuid_cmd->uuid,
07d6d2b8 5677 sizeof (uuid_cmd->uuid)) != 0)
2ca7691a
TG		 5678 return FALSE;
5679
5680 return TRUE;
5681}
5682
5683/* Find a BFD in DSYM_FILENAME which matches ARCH and UUID_CMD.
5684 The caller is responsible for closing the returned BFD object and
5685 its my_archive if the returned BFD is in a fat dSYM. */
5686
5687static bfd *
5688bfd_mach_o_find_dsym (const char *dsym_filename,
07d6d2b8
AM		 5689 const bfd_mach_o_uuid_command *uuid_cmd,
5690 const bfd_arch_info_type *arch)
2ca7691a
TG		 5691{
5692 bfd *base_dsym_bfd, *dsym_bfd;
5693
5694 BFD_ASSERT (uuid_cmd);
5695
5696 base_dsym_bfd = bfd_openr (dsym_filename, NULL);
5697 if (base_dsym_bfd == NULL)
5698 return NULL;
5699
5700 dsym_bfd = bfd_mach_o_fat_extract (base_dsym_bfd, bfd_object, arch);
5701 if (bfd_mach_o_dsym_for_uuid_p (dsym_bfd, uuid_cmd))
5702 return dsym_bfd;
5703
5704 bfd_close (dsym_bfd);
5705 if (base_dsym_bfd != dsym_bfd)
5706 bfd_close (base_dsym_bfd);
5707
5708 return NULL;
5709}
5710
5711/* Return a BFD created from a dSYM file for ABFD.
5712 The caller is responsible for closing the returned BFD object, its
5713 filename, and its my_archive if the returned BFD is in a fat dSYM. */
5714
5715static bfd *
5716bfd_mach_o_follow_dsym (bfd *abfd)
5717{
5718 char *dsym_filename;
5719 bfd_mach_o_uuid_command *uuid_cmd;
5720 bfd *dsym_bfd, *base_bfd = abfd;
5721 const char *base_basename;
5722
5723 if (abfd == NULL || bfd_get_flavour (abfd) != bfd_target_mach_o_flavour)
5724 return NULL;
5725
b0cffb47 5726 if (abfd->my_archive && !bfd_is_thin_archive (abfd->my_archive))
2ca7691a
TG		 5727 base_bfd = abfd->my_archive;
5728 /* BFD may have been opened from a stream. */
5729 if (base_bfd->filename == NULL)
5730 {
5731 bfd_set_error (bfd_error_invalid_operation);
5732 return NULL;
5733 }
5734 base_basename = lbasename (base_bfd->filename);
5735
5736 uuid_cmd = bfd_mach_o_lookup_uuid_command (abfd);
5737 if (uuid_cmd == NULL)
5738 return NULL;
5739
5740 /* TODO: We assume the DWARF file has the same as the binary's.
5741 It seems apple's GDB checks all files in the dSYM bundle directory.
5742 http://opensource.apple.com/source/gdb/gdb-1708/src/gdb/macosx/macosx-tdep.c
5743 */
5744 dsym_filename = (char *)bfd_malloc (strlen (base_bfd->filename)
07d6d2b8
AM		 5745 + strlen (dsym_subdir) + 1
5746 + strlen (base_basename) + 1);
2ca7691a 5747 sprintf (dsym_filename, "%s%s/%s",
07d6d2b8 5748 base_bfd->filename, dsym_subdir, base_basename);
2ca7691a
TG		 5749
5750 dsym_bfd = bfd_mach_o_find_dsym (dsym_filename, uuid_cmd,
07d6d2b8 5751 bfd_get_arch_info (abfd));
2ca7691a
TG		 5752 if (dsym_bfd == NULL)
5753 free (dsym_filename);
5754
5755 return dsym_bfd;
5756}
5757
d9071b0c
TG		 5758bfd_boolean
5759bfd_mach_o_find_nearest_line (bfd *abfd,
d9071b0c 5760 asymbol **symbols,
fb167eb2 5761 asection *section,
d9071b0c
TG		 5762 bfd_vma offset,
5763 const char **filename_ptr,
5764 const char **functionname_ptr,
fb167eb2
AM		 5765 unsigned int *line_ptr,
5766 unsigned int *discriminator_ptr)
d9071b0c
TG		 5767{
5768 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
2ca7691a 5769 if (mdata == NULL)
d9071b0c 5770 return FALSE;
2ca7691a
TG		 5771 switch (mdata->header.filetype)
5772 {
5773 case BFD_MACH_O_MH_OBJECT:
5774 break;
5775 case BFD_MACH_O_MH_EXECUTE:
5776 case BFD_MACH_O_MH_DYLIB:
5777 case BFD_MACH_O_MH_BUNDLE:
5778 case BFD_MACH_O_MH_KEXT_BUNDLE:
5779 if (mdata->dwarf2_find_line_info == NULL)
07d6d2b8
AM		 5780 {
5781 mdata->dsym_bfd = bfd_mach_o_follow_dsym (abfd);
5782 /* When we couldn't find dSYM for this binary, we look for
5783 the debug information in the binary itself. In this way,
5784 we won't try finding separated dSYM again because
5785 mdata->dwarf2_find_line_info will be filled. */
5786 if (! mdata->dsym_bfd)
5787 break;
5788 if (! _bfd_dwarf2_slurp_debug_info (abfd, mdata->dsym_bfd,
5789 dwarf_debug_sections, symbols,
5790 &mdata->dwarf2_find_line_info,
93ee1e36 5791 FALSE))
07d6d2b8
AM		 5792 return FALSE;
5793 }
2ca7691a
TG		 5794 break;
5795 default:
5796 return FALSE;
5797 }
fb167eb2
AM		 5798 return _bfd_dwarf2_find_nearest_line (abfd, symbols, NULL, section, offset,
5799 filename_ptr, functionname_ptr,
5800 line_ptr, discriminator_ptr,
5801 dwarf_debug_sections, 0,
5802 &mdata->dwarf2_find_line_info);
d9071b0c
TG		 5803}
5804
5805bfd_boolean
5806bfd_mach_o_close_and_cleanup (bfd *abfd)
5807{
5808 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
5809 if (bfd_get_format (abfd) == bfd_object && mdata != NULL)
4434114c
TG		 5810 {
5811 _bfd_dwarf2_cleanup_debug_info (abfd, &mdata->dwarf2_find_line_info);
5812 bfd_mach_o_free_cached_info (abfd);
2ca7691a 5813 if (mdata->dsym_bfd != NULL)
07d6d2b8
AM		 5814 {
5815 bfd *fat_bfd = mdata->dsym_bfd->my_archive;
cf466c2a
NC		 5816#if 0
5817 /* FIXME: PR 19435: This calculation to find the memory allocated by
5818 bfd_mach_o_follow_dsym for the filename does not always end up
5819 selecting the correct pointer. Unfortunately this problem is
5820 very hard to reproduce on a non Mach-O native system, so until it
5821 can be traced and fixed on such a system, this code will remain
5822 commented out. This does mean that there will be a memory leak,
5823 but it is small, and happens when we are closing down, so it
c244074c 5824 should not matter too much. */
07d6d2b8
AM		 5825 char *dsym_filename = (char *)(fat_bfd
5826 ? fat_bfd->filename
5827 : mdata->dsym_bfd->filename);
cf466c2a 5828#endif
07d6d2b8
AM		 5829 bfd_close (mdata->dsym_bfd);
5830 mdata->dsym_bfd = NULL;
5831 if (fat_bfd)
5832 bfd_close (fat_bfd);
cf466c2a 5833#if 0
07d6d2b8 5834 free (dsym_filename);
cf466c2a 5835#endif
07d6d2b8 5836 }
4434114c 5837 }
dff55db0 5838
d9071b0c
TG		 5839 return _bfd_generic_close_and_cleanup (abfd);
5840}
5841
dff55db0
TG		 5842bfd_boolean bfd_mach_o_free_cached_info (bfd *abfd)
5843{
5844 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
5845 asection *asect;
5846 free (mdata->dyn_reloc_cache);
5847 mdata->dyn_reloc_cache = NULL;
5848 for (asect = abfd->sections; asect != NULL; asect = asect->next)
5849 {
5850 free (asect->relocation);
5851 asect->relocation = NULL;
5852 }
5853
5854 return TRUE;
5855}
5856
68ffbac6 5857#define bfd_mach_o_bfd_reloc_type_lookup _bfd_norelocs_bfd_reloc_type_lookup
92bc0e80
TG		 5858#define bfd_mach_o_bfd_reloc_name_lookup _bfd_norelocs_bfd_reloc_name_lookup
5859
bcb51645 5860#define bfd_mach_o_canonicalize_one_reloc NULL
92bc0e80 5861#define bfd_mach_o_swap_reloc_out NULL
b32e07d7 5862#define bfd_mach_o_print_thread NULL
a4551119 5863#define bfd_mach_o_tgt_seg_table NULL
ab76eeaf 5864#define bfd_mach_o_section_type_valid_for_tgt NULL
92bc0e80 5865
07d6d2b8
AM		 5866#define TARGET_NAME mach_o_be_vec
5867#define TARGET_STRING "mach-o-be"
42fa0891 5868#define TARGET_ARCHITECTURE bfd_arch_unknown
4384b284 5869#define TARGET_PAGESIZE 1
07d6d2b8
AM		 5870#define TARGET_BIG_ENDIAN 1
5871#define TARGET_ARCHIVE 0
b93a1992 5872#define TARGET_PRIORITY 1
3af9a47b
NC		 5873#include "mach-o-target.c"
5874
5875#undef TARGET_NAME
5876#undef TARGET_STRING
42fa0891 5877#undef TARGET_ARCHITECTURE
4384b284 5878#undef TARGET_PAGESIZE
3af9a47b
NC		 5879#undef TARGET_BIG_ENDIAN
5880#undef TARGET_ARCHIVE
b93a1992 5881#undef TARGET_PRIORITY
3af9a47b 5882
07d6d2b8
AM		 5883#define TARGET_NAME mach_o_le_vec
5884#define TARGET_STRING "mach-o-le"
42fa0891 5885#define TARGET_ARCHITECTURE bfd_arch_unknown
4384b284 5886#define TARGET_PAGESIZE 1
07d6d2b8
AM		 5887#define TARGET_BIG_ENDIAN 0
5888#define TARGET_ARCHIVE 0
b93a1992 5889#define TARGET_PRIORITY 1
3af9a47b
NC		 5890
5891#include "mach-o-target.c"
5892
5893#undef TARGET_NAME
5894#undef TARGET_STRING
42fa0891 5895#undef TARGET_ARCHITECTURE
4384b284 5896#undef TARGET_PAGESIZE
3af9a47b
NC		 5897#undef TARGET_BIG_ENDIAN
5898#undef TARGET_ARCHIVE
b93a1992 5899#undef TARGET_PRIORITY
3af9a47b 5900
8f95b6e4 5901/* Not yet handled: creating an archive. */
07d6d2b8 5902#define bfd_mach_o_mkarchive _bfd_noarchive_mkarchive
8f95b6e4 5903
d00dd7dc 5904#define bfd_mach_o_close_and_cleanup _bfd_bool_bfd_true
47daa70f 5905
8f95b6e4 5906/* Not used. */
07d6d2b8 5907#define bfd_mach_o_generic_stat_arch_elt bfd_mach_o_fat_stat_arch_elt
47daa70f
TG		 5908#define bfd_mach_o_openr_next_archived_file bfd_mach_o_fat_openr_next_archived_file
5909#define bfd_mach_o_archive_p bfd_mach_o_fat_archive_p
8f95b6e4 5910
07d6d2b8
AM		 5911#define TARGET_NAME mach_o_fat_vec
5912#define TARGET_STRING "mach-o-fat"
42fa0891 5913#define TARGET_ARCHITECTURE bfd_arch_unknown
4384b284 5914#define TARGET_PAGESIZE 1
07d6d2b8
AM		 5915#define TARGET_BIG_ENDIAN 1
5916#define TARGET_ARCHIVE 1
b93a1992 5917#define TARGET_PRIORITY 0
3af9a47b
NC		 5918
5919#include "mach-o-target.c"
5920
5921#undef TARGET_NAME
5922#undef TARGET_STRING
42fa0891 5923#undef TARGET_ARCHITECTURE
4384b284 5924#undef TARGET_PAGESIZE
3af9a47b
NC		 5925#undef TARGET_BIG_ENDIAN
5926#undef TARGET_ARCHIVE
b93a1992 5927#undef TARGET_PRIORITY
GDB Binutils - Deliverables
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