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Update year range in copyright notice of binutils files
[thirdparty/binutils-gdb.git] / bfd / mach-o.c
CommitLineData
3af9a47b 1/* Mach-O support for BFD.
fd67aa11 2 Copyright (C) 1999-2024 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"
7a6e0d89 22#include <limits.h>
3af9a47b 23#include "bfd.h"
3af9a47b
NC		 24#include "libbfd.h"
25#include "libiberty.h"
2d5d5a8f 26#include "mach-o.h"
15e1c58a 27#include "aout/stab_gnu.h"
46d1c23b
TG		 28#include "mach-o/reloc.h"
29#include "mach-o/external.h"
3af9a47b 30#include <ctype.h>
7f307238
IS		 31#include <stdlib.h>
32#include <string.h>
3af9a47b 33
154a1ee5
TG		 34#define bfd_mach_o_object_p bfd_mach_o_gen_object_p
35#define bfd_mach_o_core_p bfd_mach_o_gen_core_p
42fa0891 36#define bfd_mach_o_mkobject bfd_mach_o_gen_mkobject
116c20d2 37
92bc0e80 38#define FILE_ALIGN(off, algn) \
e8f81980 39 (((off) + ((ufile_ptr) 1 << (algn)) - 1) & ((ufile_ptr) -1 << (algn)))
92bc0e80 40
0a1b45a2 41static bool
c9ffd2ea
TG		 42bfd_mach_o_read_dyld_content (bfd *abfd, bfd_mach_o_dyld_info_command *cmd);
43
c2f09c75 44unsigned int
1e8a024a
TG		 45bfd_mach_o_version (bfd *abfd)
46{
47 bfd_mach_o_data_struct *mdata = NULL;
48
49 BFD_ASSERT (bfd_mach_o_valid (abfd));
046b007d 50 mdata = bfd_mach_o_get_data (abfd);
1e8a024a
TG		 51
52 return mdata->header.version;
53}
54
0a1b45a2 55bool
116c20d2 56bfd_mach_o_valid (bfd *abfd)
3af9a47b
NC		 57{
58 if (abfd == NULL || abfd->xvec == NULL)
0a1b45a2 59 return false;
3af9a47b 60
154a1ee5 61 if (abfd->xvec->flavour != bfd_target_mach_o_flavour)
0a1b45a2 62 return false;
3af9a47b 63
046b007d 64 if (bfd_mach_o_get_data (abfd) == NULL)
0a1b45a2
AM		 65 return false;
66 return true;
154a1ee5
TG		 67}
68
42eec46f 69static inline bool
c2f09c75
TG		 70mach_o_wide_p (bfd_mach_o_header *header)
71{
72 switch (header->version)
73 {
74 case 1:
0a1b45a2 75 return false;
c2f09c75 76 case 2:
0a1b45a2 77 return true;
c2f09c75
TG		 78 default:
79 BFD_FAIL ();
0a1b45a2 80 return false;
c2f09c75
TG		 81 }
82}
83
42eec46f 84static inline bool
c2f09c75
TG		 85bfd_mach_o_wide_p (bfd *abfd)
86{
046b007d 87 return mach_o_wide_p (&bfd_mach_o_get_data (abfd)->header);
c2f09c75 88}
68ffbac6 89
154a1ee5
TG		 90/* Tables to translate well known Mach-O segment/section names to bfd
91 names. Use of canonical names (such as .text or .debug_frame) is required
92 by gdb. */
93
a4551119
TG		 94/* __TEXT Segment. */
95static const mach_o_section_name_xlat text_section_names_xlat[] =
154a1ee5 96 {
68ffbac6 97 { ".text", "__text",
a4551119
TG		 98 SEC_CODE | SEC_LOAD, BFD_MACH_O_S_REGULAR,
99 BFD_MACH_O_S_ATTR_PURE_INSTRUCTIONS, 0},
100 { ".const", "__const",
101 SEC_READONLY | SEC_DATA | SEC_LOAD, BFD_MACH_O_S_REGULAR,
102 BFD_MACH_O_S_ATTR_NONE, 0},
103 { ".static_const", "__static_const",
104 SEC_READONLY | SEC_DATA | SEC_LOAD, BFD_MACH_O_S_REGULAR,
105 BFD_MACH_O_S_ATTR_NONE, 0},
106 { ".cstring", "__cstring",
107 SEC_READONLY | SEC_DATA | SEC_LOAD | SEC_MERGE | SEC_STRINGS,
108 BFD_MACH_O_S_CSTRING_LITERALS,
109 BFD_MACH_O_S_ATTR_NONE, 0},
110 { ".literal4", "__literal4",
111 SEC_READONLY | SEC_DATA | SEC_LOAD, BFD_MACH_O_S_4BYTE_LITERALS,
112 BFD_MACH_O_S_ATTR_NONE, 2},
113 { ".literal8", "__literal8",
114 SEC_READONLY | SEC_DATA | SEC_LOAD, BFD_MACH_O_S_8BYTE_LITERALS,
115 BFD_MACH_O_S_ATTR_NONE, 3},
116 { ".literal16", "__literal16",
117 SEC_READONLY | SEC_DATA | SEC_LOAD, BFD_MACH_O_S_16BYTE_LITERALS,
118 BFD_MACH_O_S_ATTR_NONE, 4},
119 { ".constructor", "__constructor",
120 SEC_CODE | SEC_LOAD, BFD_MACH_O_S_REGULAR,
121 BFD_MACH_O_S_ATTR_NONE, 0},
122 { ".destructor", "__destructor",
123 SEC_CODE | SEC_LOAD, BFD_MACH_O_S_REGULAR,
124 BFD_MACH_O_S_ATTR_NONE, 0},
125 { ".eh_frame", "__eh_frame",
632039e0 126 SEC_READONLY | SEC_DATA | SEC_LOAD, BFD_MACH_O_S_COALESCED,
a4551119
TG		 127 BFD_MACH_O_S_ATTR_LIVE_SUPPORT
128 | BFD_MACH_O_S_ATTR_STRIP_STATIC_SYMS
632039e0 129 | BFD_MACH_O_S_ATTR_NO_TOC, 2},
a4551119 130 { NULL, NULL, 0, 0, 0, 0}
154a1ee5
TG		 131 };
132
a4551119
TG		 133/* __DATA Segment. */
134static const mach_o_section_name_xlat data_section_names_xlat[] =
154a1ee5 135 {
a4551119
TG		 136 { ".data", "__data",
137 SEC_DATA | SEC_LOAD, BFD_MACH_O_S_REGULAR,
138 BFD_MACH_O_S_ATTR_NONE, 0},
139 { ".bss", "__bss",
140 SEC_NO_FLAGS, BFD_MACH_O_S_ZEROFILL,
141 BFD_MACH_O_S_ATTR_NONE, 0},
142 { ".const_data", "__const",
143 SEC_DATA | SEC_LOAD, BFD_MACH_O_S_REGULAR,
144 BFD_MACH_O_S_ATTR_NONE, 0},
145 { ".static_data", "__static_data",
146 SEC_DATA | SEC_LOAD, BFD_MACH_O_S_REGULAR,
147 BFD_MACH_O_S_ATTR_NONE, 0},
148 { ".mod_init_func", "__mod_init_func",
149 SEC_DATA | SEC_LOAD, BFD_MACH_O_S_MOD_INIT_FUNC_POINTERS,
150 BFD_MACH_O_S_ATTR_NONE, 2},
151 { ".mod_term_func", "__mod_term_func",
152 SEC_DATA | SEC_LOAD, BFD_MACH_O_S_MOD_FINI_FUNC_POINTERS,
153 BFD_MACH_O_S_ATTR_NONE, 2},
154 { ".dyld", "__dyld",
155 SEC_DATA | SEC_LOAD, BFD_MACH_O_S_REGULAR,
156 BFD_MACH_O_S_ATTR_NONE, 0},
157 { ".cfstring", "__cfstring",
158 SEC_DATA | SEC_LOAD, BFD_MACH_O_S_REGULAR,
159 BFD_MACH_O_S_ATTR_NONE, 2},
160 { NULL, NULL, 0, 0, 0, 0}
154a1ee5
TG		 161 };
162
a4551119
TG		 163/* __DWARF Segment. */
164static const mach_o_section_name_xlat dwarf_section_names_xlat[] =
154a1ee5 165 {
a4551119
TG		 166 { ".debug_frame", "__debug_frame",
167 SEC_DEBUGGING, BFD_MACH_O_S_REGULAR,
168 BFD_MACH_O_S_ATTR_DEBUG, 0},
169 { ".debug_info", "__debug_info",
170 SEC_DEBUGGING, BFD_MACH_O_S_REGULAR,
171 BFD_MACH_O_S_ATTR_DEBUG, 0},
172 { ".debug_abbrev", "__debug_abbrev",
173 SEC_DEBUGGING, BFD_MACH_O_S_REGULAR,
174 BFD_MACH_O_S_ATTR_DEBUG, 0},
175 { ".debug_aranges", "__debug_aranges",
176 SEC_DEBUGGING, BFD_MACH_O_S_REGULAR,
177 BFD_MACH_O_S_ATTR_DEBUG, 0},
178 { ".debug_macinfo", "__debug_macinfo",
179 SEC_DEBUGGING, BFD_MACH_O_S_REGULAR,
180 BFD_MACH_O_S_ATTR_DEBUG, 0},
181 { ".debug_line", "__debug_line",
182 SEC_DEBUGGING, BFD_MACH_O_S_REGULAR,
183 BFD_MACH_O_S_ATTR_DEBUG, 0},
184 { ".debug_loc", "__debug_loc",
185 SEC_DEBUGGING, BFD_MACH_O_S_REGULAR,
186 BFD_MACH_O_S_ATTR_DEBUG, 0},
187 { ".debug_pubnames", "__debug_pubnames",
188 SEC_DEBUGGING, BFD_MACH_O_S_REGULAR,
189 BFD_MACH_O_S_ATTR_DEBUG, 0},
190 { ".debug_pubtypes", "__debug_pubtypes",
191 SEC_DEBUGGING, BFD_MACH_O_S_REGULAR,
192 BFD_MACH_O_S_ATTR_DEBUG, 0},
193 { ".debug_str", "__debug_str",
194 SEC_DEBUGGING, BFD_MACH_O_S_REGULAR,
195 BFD_MACH_O_S_ATTR_DEBUG, 0},
196 { ".debug_ranges", "__debug_ranges",
197 SEC_DEBUGGING, BFD_MACH_O_S_REGULAR,
198 BFD_MACH_O_S_ATTR_DEBUG, 0},
199 { ".debug_macro", "__debug_macro",
200 SEC_DEBUGGING, BFD_MACH_O_S_REGULAR,
201 BFD_MACH_O_S_ATTR_DEBUG, 0},
671a6cbe
NC		 202 { ".debug_gdb_scripts", "__debug_gdb_scri",
203 SEC_DEBUGGING, BFD_MACH_O_S_REGULAR,
204 BFD_MACH_O_S_ATTR_DEBUG, 0},
a4551119 205 { NULL, NULL, 0, 0, 0, 0}
154a1ee5
TG		 206 };
207
a4551119
TG		 208/* __OBJC Segment. */
209static const mach_o_section_name_xlat objc_section_names_xlat[] =
210 {
211 { ".objc_class", "__class",
212 SEC_DATA | SEC_LOAD, BFD_MACH_O_S_REGULAR,
213 BFD_MACH_O_S_ATTR_NO_DEAD_STRIP, 0},
214 { ".objc_meta_class", "__meta_class",
215 SEC_DATA | SEC_LOAD, BFD_MACH_O_S_REGULAR,
216 BFD_MACH_O_S_ATTR_NO_DEAD_STRIP, 0},
217 { ".objc_cat_cls_meth", "__cat_cls_meth",
218 SEC_DATA | SEC_LOAD, BFD_MACH_O_S_REGULAR,
219 BFD_MACH_O_S_ATTR_NO_DEAD_STRIP, 0},
220 { ".objc_cat_inst_meth", "__cat_inst_meth",
221 SEC_DATA | SEC_LOAD, BFD_MACH_O_S_REGULAR,
222 BFD_MACH_O_S_ATTR_NO_DEAD_STRIP, 0},
223 { ".objc_protocol", "__protocol",
224 SEC_DATA | SEC_LOAD, BFD_MACH_O_S_REGULAR,
225 BFD_MACH_O_S_ATTR_NO_DEAD_STRIP, 0},
226 { ".objc_string_object", "__string_object",
227 SEC_DATA | SEC_LOAD, BFD_MACH_O_S_REGULAR,
228 BFD_MACH_O_S_ATTR_NO_DEAD_STRIP, 0},
229 { ".objc_cls_meth", "__cls_meth",
230 SEC_DATA | SEC_LOAD, BFD_MACH_O_S_REGULAR,
231 BFD_MACH_O_S_ATTR_NO_DEAD_STRIP, 0},
232 { ".objc_inst_meth", "__inst_meth",
233 SEC_DATA | SEC_LOAD, BFD_MACH_O_S_REGULAR,
234 BFD_MACH_O_S_ATTR_NO_DEAD_STRIP, 0},
235 { ".objc_cls_refs", "__cls_refs",
236 SEC_DATA | SEC_LOAD, BFD_MACH_O_S_LITERAL_POINTERS,
237 BFD_MACH_O_S_ATTR_NO_DEAD_STRIP, 0},
238 { ".objc_message_refs", "__message_refs",
239 SEC_DATA | SEC_LOAD, BFD_MACH_O_S_LITERAL_POINTERS,
240 BFD_MACH_O_S_ATTR_NO_DEAD_STRIP, 0},
241 { ".objc_symbols", "__symbols",
242 SEC_DATA | SEC_LOAD, BFD_MACH_O_S_REGULAR,
243 BFD_MACH_O_S_ATTR_NO_DEAD_STRIP, 0},
244 { ".objc_category", "__category",
245 SEC_DATA | SEC_LOAD, BFD_MACH_O_S_REGULAR,
246 BFD_MACH_O_S_ATTR_NO_DEAD_STRIP, 0},
247 { ".objc_class_vars", "__class_vars",
248 SEC_DATA | SEC_LOAD, BFD_MACH_O_S_REGULAR,
249 BFD_MACH_O_S_ATTR_NO_DEAD_STRIP, 0},
250 { ".objc_instance_vars", "__instance_vars",
251 SEC_DATA | SEC_LOAD, BFD_MACH_O_S_REGULAR,
252 BFD_MACH_O_S_ATTR_NO_DEAD_STRIP, 0},
253 { ".objc_module_info", "__module_info",
254 SEC_DATA | SEC_LOAD, BFD_MACH_O_S_REGULAR,
255 BFD_MACH_O_S_ATTR_NO_DEAD_STRIP, 0},
256 { ".objc_selector_strs", "__selector_strs",
257 SEC_DATA | SEC_LOAD, BFD_MACH_O_S_CSTRING_LITERALS,
258 BFD_MACH_O_S_ATTR_NO_DEAD_STRIP, 0},
259 { ".objc_image_info", "__image_info",
260 SEC_DATA | SEC_LOAD, BFD_MACH_O_S_REGULAR,
261 BFD_MACH_O_S_ATTR_NO_DEAD_STRIP, 0},
262 { ".objc_selector_fixup", "__sel_fixup",
263 SEC_DATA | SEC_LOAD, BFD_MACH_O_S_REGULAR,
264 BFD_MACH_O_S_ATTR_NO_DEAD_STRIP, 0},
265 /* Objc V1 */
266 { ".objc1_class_ext", "__class_ext",
267 SEC_DATA | SEC_LOAD, BFD_MACH_O_S_REGULAR,
268 BFD_MACH_O_S_ATTR_NO_DEAD_STRIP, 0},
269 { ".objc1_property_list", "__property",
270 SEC_DATA | SEC_LOAD, BFD_MACH_O_S_REGULAR,
271 BFD_MACH_O_S_ATTR_NO_DEAD_STRIP, 0},
272 { ".objc1_protocol_ext", "__protocol_ext",
273 SEC_DATA | SEC_LOAD, BFD_MACH_O_S_REGULAR,
274 BFD_MACH_O_S_ATTR_NO_DEAD_STRIP, 0},
275 { NULL, NULL, 0, 0, 0, 0}
276 };
5a5cbf72 277
a4551119 278static const mach_o_segment_name_xlat segsec_names_xlat[] =
154a1ee5 279 {
154a1ee5
TG		 280 { "__TEXT", text_section_names_xlat },
281 { "__DATA", data_section_names_xlat },
5a5cbf72 282 { "__DWARF", dwarf_section_names_xlat },
a4551119 283 { "__OBJC", objc_section_names_xlat },
154a1ee5
TG		 284 { NULL, NULL }
285 };
286
2ca7691a
TG		 287static const char dsym_subdir[] = ".dSYM/Contents/Resources/DWARF";
288
a4551119
TG		 289/* For both cases bfd-name => mach-o name and vice versa, the specific target
290 is checked before the generic. This allows a target (e.g. ppc for cstring)
291 to override the generic definition with a more specific one. */
154a1ee5 292
a4551119
TG		 293/* Fetch the translation from a Mach-O section designation (segment, section)
294 as a bfd short name, if one exists. Otherwise return NULL.
68ffbac6 295
a4551119
TG		 296 Allow the segment and section names to be unterminated 16 byte arrays. */
297
298const mach_o_section_name_xlat *
299bfd_mach_o_section_data_for_mach_sect (bfd *abfd, const char *segname,
300 const char *sectname)
154a1ee5
TG		 301{
302 const struct mach_o_segment_name_xlat *seg;
a4551119
TG		 303 const mach_o_section_name_xlat *sec;
304 bfd_mach_o_backend_data *bed = bfd_mach_o_get_backend_data (abfd);
154a1ee5 305
a4551119
TG		 306 /* First try any target-specific translations defined... */
307 if (bed->segsec_names_xlat)
308 for (seg = bed->segsec_names_xlat; seg->segname; seg++)
309 if (strncmp (seg->segname, segname, BFD_MACH_O_SEGNAME_SIZE) == 0)
310 for (sec = seg->sections; sec->mach_o_name; sec++)
311 if (strncmp (sec->mach_o_name, sectname,
312 BFD_MACH_O_SECTNAME_SIZE) == 0)
313 return sec;
8462aec7 314
a4551119 315 /* ... and then the Mach-O generic ones. */
154a1ee5 316 for (seg = segsec_names_xlat; seg->segname; seg++)
a4551119
TG		 317 if (strncmp (seg->segname, segname, BFD_MACH_O_SEGNAME_SIZE) == 0)
318 for (sec = seg->sections; sec->mach_o_name; sec++)
07d6d2b8 319 if (strncmp (sec->mach_o_name, sectname,
a4551119 320 BFD_MACH_O_SECTNAME_SIZE) == 0)
07d6d2b8 321 return sec;
154a1ee5 322
68ffbac6 323 return NULL;
53d58d96
TG		 324}
325
a4551119 326/* If the bfd_name for this section is a 'canonical' form for which we
68ffbac6 327 know the Mach-O data, return the segment name and the data for the
a4551119 328 Mach-O equivalent. Otherwise return NULL. */
7ba695a9 329
a4551119
TG		 330const mach_o_section_name_xlat *
331bfd_mach_o_section_data_for_bfd_name (bfd *abfd, const char *bfd_name,
332 const char **segname)
53d58d96 333{
a4551119
TG		 334 const struct mach_o_segment_name_xlat *seg;
335 const mach_o_section_name_xlat *sec;
336 bfd_mach_o_backend_data *bed = bfd_mach_o_get_backend_data (abfd);
337 *segname = NULL;
338
339 if (bfd_name[0] != '.')
340 return NULL;
341
342 /* First try any target-specific translations defined... */
343 if (bed->segsec_names_xlat)
344 for (seg = bed->segsec_names_xlat; seg->segname; seg++)
345 for (sec = seg->sections; sec->bfd_name; sec++)
346 if (strcmp (bfd_name, sec->bfd_name) == 0)
347 {
348 *segname = seg->segname;
349 return sec;
350 }
351
352 /* ... and then the Mach-O generic ones. */
353 for (seg = segsec_names_xlat; seg->segname; seg++)
354 for (sec = seg->sections; sec->bfd_name; sec++)
355 if (strcmp (bfd_name, sec->bfd_name) == 0)
356 {
357 *segname = seg->segname;
358 return sec;
359 }
360
68ffbac6 361 return NULL;
a4551119
TG		 362}
363
364/* Convert Mach-O section name to BFD.
365
68ffbac6 366 Try to use standard/canonical names, for which we have tables including
a4551119
TG		 367 default flag settings - which are returned. Otherwise forge a new name
368 in the form "<segmentname>.<sectionname>" this will be prefixed with
369 LC_SEGMENT. if the segment name does not begin with an underscore.
370
371 SEGNAME and SECTNAME are 16 byte arrays (they do not need to be NUL-
372 terminated if the name length is exactly 16 bytes - but must be if the name
373 length is less than 16 characters). */
374
375void
376bfd_mach_o_convert_section_name_to_bfd (bfd *abfd, const char *segname,
377 const char *secname, const char **name,
378 flagword *flags)
379{
380 const mach_o_section_name_xlat *xlat;
53d58d96 381 char *res;
f7a559d5 382 size_t len;
53d58d96
TG		 383 const char *pfx = "";
384
a4551119
TG		 385 *name = NULL;
386 *flags = SEC_NO_FLAGS;
53d58d96 387
68ffbac6 388 /* First search for a canonical name...
a4551119
TG		 389 xlat will be non-null if there is an entry for segname, secname. */
390 xlat = bfd_mach_o_section_data_for_mach_sect (abfd, segname, secname);
391 if (xlat)
392 {
393 len = strlen (xlat->bfd_name);
64d29018 394 res = bfd_alloc (abfd, len + 1);
a4551119
TG		 395 if (res == NULL)
396 return;
f7a559d5 397 memcpy (res, xlat->bfd_name, len + 1);
a4551119
TG		 398 *name = res;
399 *flags = xlat->bfd_flags;
400 return;
401 }
402
403 /* ... else we make up a bfd name from the segment concatenated with the
404 section. */
154a1ee5 405
7ba695a9 406 len = 16 + 1 + 16 + 1;
154a1ee5 407
c2f09c75
TG		 408 /* Put "LC_SEGMENT." prefix if the segment name is weird (ie doesn't start
409 with an underscore. */
f1bde64c 410 if (segname[0] != '_')
c2f09c75
TG		 411 {
412 static const char seg_pfx[] = "LC_SEGMENT.";
413
414 pfx = seg_pfx;
415 len += sizeof (seg_pfx) - 1;
416 }
417
154a1ee5
TG		 418 res = bfd_alloc (abfd, len);
419 if (res == NULL)
8462aec7 420 return;
a4551119 421 snprintf (res, len, "%s%.16s.%.16s", pfx, segname, secname);
8462aec7 422 *name = res;
154a1ee5
TG		 423}
424
a4551119 425/* Convert a bfd section name to a Mach-O segment + section name.
154a1ee5 426
a4551119
TG		 427 If the name is a canonical one for which we have a Darwin match
428 return the translation table - which contains defaults for flags,
429 type, attribute and default alignment data.
430
68ffbac6 431 Otherwise, expand the bfd_name (assumed to be in the form
a4551119
TG		 432 "[LC_SEGMENT.]<segmentname>.<sectionname>") and return NULL. */
433
434static const mach_o_section_name_xlat *
154a1ee5 435bfd_mach_o_convert_section_name_to_mach_o (bfd *abfd ATTRIBUTE_UNUSED,
07d6d2b8
AM		 436 asection *sect,
437 bfd_mach_o_section *section)
154a1ee5 438{
a4551119 439 const mach_o_section_name_xlat *xlat;
fd361982 440 const char *name = bfd_section_name (sect);
a4551119 441 const char *segname;
154a1ee5 442 const char *dot;
f7a559d5
AM		 443 size_t len;
444 size_t seglen;
445 size_t seclen;
154a1ee5 446
a4551119
TG		 447 memset (section->segname, 0, BFD_MACH_O_SEGNAME_SIZE + 1);
448 memset (section->sectname, 0, BFD_MACH_O_SECTNAME_SIZE + 1);
449
450 /* See if is a canonical name ... */
451 xlat = bfd_mach_o_section_data_for_bfd_name (abfd, name, &segname);
452 if (xlat)
453 {
454 strcpy (section->segname, segname);
455 strcpy (section->sectname, xlat->mach_o_name);
456 return xlat;
457 }
154a1ee5 458
a4551119
TG		 459 /* .. else we convert our constructed one back to Mach-O.
460 Strip LC_SEGMENT. prefix, if present. */
154a1ee5
TG		 461 if (strncmp (name, "LC_SEGMENT.", 11) == 0)
462 name += 11;
463
464 /* Find a dot. */
465 dot = strchr (name, '.');
466 len = strlen (name);
467
468 /* Try to split name into segment and section names. */
469 if (dot && dot != name)
470 {
471 seglen = dot - name;
472 seclen = len - (dot + 1 - name);
473
ca148c5a
TG		 474 if (seglen <= BFD_MACH_O_SEGNAME_SIZE
475 && seclen <= BFD_MACH_O_SECTNAME_SIZE)
07d6d2b8
AM		 476 {
477 memcpy (section->segname, name, seglen);
478 section->segname[seglen] = 0;
479 memcpy (section->sectname, dot + 1, seclen);
480 section->sectname[seclen] = 0;
481 return NULL;
482 }
154a1ee5
TG		 483 }
484
a4551119
TG		 485 /* The segment and section names are both missing - don't make them
486 into dots. */
487 if (dot && dot == name)
488 return NULL;
489
490 /* Just duplicate the name into both segment and section. */
154a1ee5
TG		 491 if (len > 16)
492 len = 16;
493 memcpy (section->segname, name, len);
494 section->segname[len] = 0;
495 memcpy (section->sectname, name, len);
496 section->sectname[len] = 0;
a4551119 497 return NULL;
3af9a47b
NC		 498}
499
b2b62060
TG		 500/* Return the size of an entry for section SEC.
501 Must be called only for symbol pointer section and symbol stubs
502 sections. */
503
c5012cd8 504unsigned int
b2b62060
TG		 505bfd_mach_o_section_get_entry_size (bfd *abfd, bfd_mach_o_section *sec)
506{
507 switch (sec->flags & BFD_MACH_O_SECTION_TYPE_MASK)
508 {
509 case BFD_MACH_O_S_NON_LAZY_SYMBOL_POINTERS:
510 case BFD_MACH_O_S_LAZY_SYMBOL_POINTERS:
511 return bfd_mach_o_wide_p (abfd) ? 8 : 4;
512 case BFD_MACH_O_S_SYMBOL_STUBS:
513 return sec->reserved2;
514 default:
515 BFD_FAIL ();
516 return 0;
517 }
518}
519
520/* Return the number of indirect symbols for a section.
521 Must be called only for symbol pointer section and symbol stubs
522 sections. */
523
c5012cd8 524unsigned int
b2b62060
TG		 525bfd_mach_o_section_get_nbr_indirect (bfd *abfd, bfd_mach_o_section *sec)
526{
527 unsigned int elsz;
528
7027a373
AM		 529 /* FIXME: This array is set by the assembler but does not seem to be
530 set anywhere for objcopy. Since bfd_mach_o_build_dysymtab will
531 not fill in output bfd_mach_o_dysymtab_command indirect_syms when
532 this array is NULL we may as well return zero for the size.
533 This is enough to stop objcopy allocating huge amounts of memory
534 for indirect symbols in fuzzed object files. */
535 if (sec->indirect_syms == NULL)
536 return 0;
537
b2b62060
TG		 538 elsz = bfd_mach_o_section_get_entry_size (abfd, sec);
539 if (elsz == 0)
540 return 0;
541 else
542 return sec->size / elsz;
543}
544
c9ffd2ea
TG		 545/* Append command CMD to ABFD. Note that header.ncmds is not updated. */
546
547static void
548bfd_mach_o_append_command (bfd *abfd, bfd_mach_o_load_command *cmd)
549{
550 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
551
552 if (mdata->last_command != NULL)
553 mdata->last_command->next = cmd;
554 else
555 mdata->first_command = cmd;
556 mdata->last_command = cmd;
557 cmd->next = NULL;
558}
b2b62060 559
3af9a47b
NC		 560/* Copy any private info we understand from the input symbol
561 to the output symbol. */
562
0a1b45a2 563bool
116c20d2 564bfd_mach_o_bfd_copy_private_symbol_data (bfd *ibfd ATTRIBUTE_UNUSED,
b22161d6 565 asymbol *isymbol,
116c20d2 566 bfd *obfd ATTRIBUTE_UNUSED,
b22161d6
IS		 567 asymbol *osymbol)
568{
569 bfd_mach_o_asymbol *os, *is;
c9ffd2ea 570
b22161d6
IS		 571 os = (bfd_mach_o_asymbol *)osymbol;
572 is = (bfd_mach_o_asymbol *)isymbol;
573 os->n_type = is->n_type;
574 os->n_sect = is->n_sect;
575 os->n_desc = is->n_desc;
576 os->symbol.udata.i = is->symbol.udata.i;
c9ffd2ea 577
0a1b45a2 578 return true;
3af9a47b
NC		 579}
580
581/* Copy any private info we understand from the input section
582 to the output section. */
583
0a1b45a2 584bool
c9ffd2ea
TG		 585bfd_mach_o_bfd_copy_private_section_data (bfd *ibfd, asection *isection,
586 bfd *obfd, asection *osection)
a4551119 587{
c9ffd2ea
TG		 588 bfd_mach_o_section *os = bfd_mach_o_get_mach_o_section (osection);
589 bfd_mach_o_section *is = bfd_mach_o_get_mach_o_section (isection);
68ffbac6 590
c9ffd2ea
TG		 591 if (ibfd->xvec->flavour != bfd_target_mach_o_flavour
592 || obfd->xvec->flavour != bfd_target_mach_o_flavour)
0a1b45a2 593 return true;
c9ffd2ea
TG		 594
595 BFD_ASSERT (is != NULL && os != NULL);
596
597 os->flags = is->flags;
598 os->reserved1 = is->reserved1;
599 os->reserved2 = is->reserved2;
600 os->reserved3 = is->reserved3;
a4551119 601
0a1b45a2 602 return true;
3af9a47b
NC		 603}
604
c6643fcc
NC		 605static const char *
606cputype (unsigned long value)
607{
608 switch (value)
609 {
610 case BFD_MACH_O_CPU_TYPE_VAX: return "VAX";
611 case BFD_MACH_O_CPU_TYPE_MC680x0: return "MC68k";
612 case BFD_MACH_O_CPU_TYPE_I386: return "I386";
613 case BFD_MACH_O_CPU_TYPE_MIPS: return "MIPS";
614 case BFD_MACH_O_CPU_TYPE_MC98000: return "MC98k";
615 case BFD_MACH_O_CPU_TYPE_HPPA: return "HPPA";
616 case BFD_MACH_O_CPU_TYPE_ARM: return "ARM";
617 case BFD_MACH_O_CPU_TYPE_MC88000: return "MC88K";
618 case BFD_MACH_O_CPU_TYPE_SPARC: return "SPARC";
619 case BFD_MACH_O_CPU_TYPE_I860: return "I860";
620 case BFD_MACH_O_CPU_TYPE_ALPHA: return "ALPHA";
621 case BFD_MACH_O_CPU_TYPE_POWERPC: return "PPC";
622 case BFD_MACH_O_CPU_TYPE_POWERPC_64: return "PPC64";
623 case BFD_MACH_O_CPU_TYPE_X86_64: return "X86_64";
624 case BFD_MACH_O_CPU_TYPE_ARM64: return "ARM64";
625 default: return _("<unknown>");
626 }
627}
628
629static const char *
7fbd5f4e 630cpusubtype (unsigned long cpu_type, unsigned long cpu_subtype, char *buffer)
c6643fcc 631{
c6643fcc 632 buffer[0] = 0;
4bb7a87e 633 switch (cpu_subtype & BFD_MACH_O_CPU_SUBTYPE_MASK)
c6643fcc
NC		 634 {
635 case 0:
636 break;
637 case BFD_MACH_O_CPU_SUBTYPE_LIB64:
638 sprintf (buffer, " (LIB64)"); break;
639 default:
640 sprintf (buffer, _("<unknown mask flags>")); break;
641 }
642
4bb7a87e 643 cpu_subtype &= ~ BFD_MACH_O_CPU_SUBTYPE_MASK;
c6643fcc 644
4bb7a87e 645 switch (cpu_type)
c6643fcc
NC		 646 {
647 case BFD_MACH_O_CPU_TYPE_X86_64:
648 case BFD_MACH_O_CPU_TYPE_I386:
4bb7a87e 649 switch (cpu_subtype)
c6643fcc
NC		 650 {
651 case BFD_MACH_O_CPU_SUBTYPE_X86_ALL:
652 return strcat (buffer, " (X86_ALL)");
653 default:
654 break;
655 }
656 break;
4b24dd1a 657
c6643fcc 658 case BFD_MACH_O_CPU_TYPE_ARM:
4bb7a87e 659 switch (cpu_subtype)
c6643fcc
NC		 660 {
661 case BFD_MACH_O_CPU_SUBTYPE_ARM_ALL:
662 return strcat (buffer, " (ARM_ALL)");
663 case BFD_MACH_O_CPU_SUBTYPE_ARM_V4T:
664 return strcat (buffer, " (ARM_V4T)");
665 case BFD_MACH_O_CPU_SUBTYPE_ARM_V6:
666 return strcat (buffer, " (ARM_V6)");
667 case BFD_MACH_O_CPU_SUBTYPE_ARM_V5TEJ:
668 return strcat (buffer, " (ARM_V5TEJ)");
669 case BFD_MACH_O_CPU_SUBTYPE_ARM_XSCALE:
670 return strcat (buffer, " (ARM_XSCALE)");
671 case BFD_MACH_O_CPU_SUBTYPE_ARM_V7:
672 return strcat (buffer, " (ARM_V7)");
673 default:
674 break;
675 }
676 break;
4b24dd1a 677
c6643fcc 678 case BFD_MACH_O_CPU_TYPE_ARM64:
4bb7a87e 679 switch (cpu_subtype)
c6643fcc
NC		 680 {
681 case BFD_MACH_O_CPU_SUBTYPE_ARM64_ALL:
682 return strcat (buffer, " (ARM64_ALL)");
683 case BFD_MACH_O_CPU_SUBTYPE_ARM64_V8:
684 return strcat (buffer, " (ARM64_V8)");
685 default:
686 break;
687 }
688 break;
689
690 default:
691 break;
692 }
693
4bb7a87e 694 if (cpu_subtype != 0)
c6643fcc
NC		 695 return strcat (buffer, _(" (<unknown>)"));
696
697 return buffer;
698}
699
0a1b45a2 700bool
c6643fcc
NC		 701bfd_mach_o_bfd_print_private_bfd_data (bfd *abfd, void *ptr)
702{
703 FILE * file = (FILE *) ptr;
704 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
7fbd5f4e 705 char buff[128];
c6643fcc
NC		 706
707 fprintf (file, _(" MACH-O header:\n"));
708 fprintf (file, _(" magic: %#lx\n"), (long) mdata->header.magic);
709 fprintf (file, _(" cputype: %#lx (%s)\n"), (long) mdata->header.cputype,
710 cputype (mdata->header.cputype));
711 fprintf (file, _(" cpusubtype: %#lx%s\n"), (long) mdata->header.cpusubtype,
7fbd5f4e 712 cpusubtype (mdata->header.cputype, mdata->header.cpusubtype, buff));
c6643fcc
NC		 713 fprintf (file, _(" filetype: %#lx\n"), (long) mdata->header.filetype);
714 fprintf (file, _(" ncmds: %#lx\n"), (long) mdata->header.ncmds);
715 fprintf (file, _(" sizeocmds: %#lx\n"), (long) mdata->header.sizeofcmds);
716 fprintf (file, _(" flags: %#lx\n"), (long) mdata->header.flags);
717 fprintf (file, _(" version: %x\n"), mdata->header.version);
4b24dd1a 718
0a1b45a2 719 return true;
c6643fcc
NC		 720}
721
3af9a47b
NC		 722/* Copy any private info we understand from the input bfd
723 to the output bfd. */
724
0a1b45a2 725bool
967b2c53 726bfd_mach_o_bfd_copy_private_header_data (bfd *ibfd, bfd *obfd)
3af9a47b 727{
c9ffd2ea
TG		 728 bfd_mach_o_data_struct *imdata;
729 bfd_mach_o_data_struct *omdata;
730 bfd_mach_o_load_command *icmd;
731
154a1ee5
TG		 732 if (bfd_get_flavour (ibfd) != bfd_target_mach_o_flavour
733 || bfd_get_flavour (obfd) != bfd_target_mach_o_flavour)
0a1b45a2 734 return true;
154a1ee5 735
3af9a47b
NC		 736 BFD_ASSERT (bfd_mach_o_valid (ibfd));
737 BFD_ASSERT (bfd_mach_o_valid (obfd));
738
c9ffd2ea
TG		 739 imdata = bfd_mach_o_get_data (ibfd);
740 omdata = bfd_mach_o_get_data (obfd);
741
742 /* Copy header flags. */
743 omdata->header.flags = imdata->header.flags;
744
c6643fcc
NC		 745 /* PR 23299. Copy the cputype. */
746 if (imdata->header.cputype != omdata->header.cputype)
747 {
748 if (omdata->header.cputype == 0)
749 omdata->header.cputype = imdata->header.cputype;
750 else if (imdata->header.cputype != 0)
751 /* Urg - what has happened ? */
752 _bfd_error_handler (_("incompatible cputypes in mach-o files: %ld vs %ld"),
753 (long) imdata->header.cputype,
754 (long) omdata->header.cputype);
755 }
756
757 /* Copy the cpusubtype. */
758 omdata->header.cpusubtype = imdata->header.cpusubtype;
4b24dd1a 759
c9ffd2ea
TG		 760 /* Copy commands. */
761 for (icmd = imdata->first_command; icmd != NULL; icmd = icmd->next)
762 {
763 bfd_mach_o_load_command *ocmd;
764
765 switch (icmd->type)
766 {
767 case BFD_MACH_O_LC_LOAD_DYLIB:
768 case BFD_MACH_O_LC_LOAD_DYLINKER:
769 case BFD_MACH_O_LC_DYLD_INFO:
770 /* Command is copied. */
771 ocmd = bfd_alloc (obfd, sizeof (bfd_mach_o_load_command));
772 if (ocmd == NULL)
0a1b45a2 773 return false;
c9ffd2ea
TG		 774
775 /* Copy common fields. */
776 ocmd->type = icmd->type;
777 ocmd->type_required = icmd->type_required;
778 ocmd->offset = 0;
779 ocmd->len = icmd->len;
780 break;
781
782 default:
783 /* Command is not copied. */
784 continue;
785 break;
786 }
787
788 switch (icmd->type)
789 {
790 case BFD_MACH_O_LC_LOAD_DYLIB:
791 {
792 bfd_mach_o_dylib_command *idy = &icmd->command.dylib;
793 bfd_mach_o_dylib_command *ody = &ocmd->command.dylib;
794
795 ody->name_offset = idy->name_offset;
796 ody->timestamp = idy->timestamp;
797 ody->current_version = idy->current_version;
798 ody->compatibility_version = idy->compatibility_version;
799 ody->name_str = idy->name_str;
800 }
801 break;
802
803 case BFD_MACH_O_LC_LOAD_DYLINKER:
804 {
805 bfd_mach_o_dylinker_command *idy = &icmd->command.dylinker;
806 bfd_mach_o_dylinker_command *ody = &ocmd->command.dylinker;
807
808 ody->name_offset = idy->name_offset;
809 ody->name_str = idy->name_str;
810 }
811 break;
812
813 case BFD_MACH_O_LC_DYLD_INFO:
814 {
815 bfd_mach_o_dyld_info_command *idy = &icmd->command.dyld_info;
816 bfd_mach_o_dyld_info_command *ody = &ocmd->command.dyld_info;
817
818 if (bfd_mach_o_read_dyld_content (ibfd, idy))
819 {
820 ody->rebase_size = idy->rebase_size;
821 ody->rebase_content = idy->rebase_content;
822
823 ody->bind_size = idy->bind_size;
824 ody->bind_content = idy->bind_content;
825
826 ody->weak_bind_size = idy->weak_bind_size;
827 ody->weak_bind_content = idy->weak_bind_content;
828
829 ody->lazy_bind_size = idy->lazy_bind_size;
830 ody->lazy_bind_content = idy->lazy_bind_content;
831
832 ody->export_size = idy->export_size;
833 ody->export_content = idy->export_content;
834 }
86eafac0
NC		 835 /* PR 17512L: file: 730e492d. */
836 else
837 {
1b786873
L		 838 ody->rebase_size =
839 ody->bind_size =
840 ody->weak_bind_size =
841 ody->lazy_bind_size =
86eafac0 842 ody->export_size = 0;
1b786873
L		 843 ody->rebase_content =
844 ody->bind_content =
845 ody->weak_bind_content =
846 ody->lazy_bind_content =
86eafac0
NC		 847 ody->export_content = NULL;
848 }
c9ffd2ea
TG		 849 }
850 break;
851
852 default:
853 /* That command should be handled. */
854 abort ();
855 }
856
857 /* Insert command. */
858 bfd_mach_o_append_command (obfd, ocmd);
859 }
154a1ee5 860
0a1b45a2 861 return true;
3af9a47b
NC		 862}
863
0c9ef0f0
TG		 864/* This allows us to set up to 32 bits of flags (unless we invent some
865 fiendish scheme to subdivide). For now, we'll just set the file flags
866 without error checking - just overwrite. */
68ffbac6 867
0a1b45a2 868bool
0c9ef0f0
TG		 869bfd_mach_o_bfd_set_private_flags (bfd *abfd, flagword flags)
870{
871 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
872
873 if (!mdata)
0a1b45a2 874 return false;
0c9ef0f0
TG		 875
876 mdata->header.flags = flags;
0a1b45a2 877 return true;
0c9ef0f0
TG		 878}
879
046b007d 880/* Count the total number of symbols. */
154a1ee5 881
3af9a47b 882static long
116c20d2 883bfd_mach_o_count_symbols (bfd *abfd)
3af9a47b 884{
046b007d 885 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
3af9a47b 886
046b007d
TG		 887 if (mdata->symtab == NULL)
888 return 0;
889 return mdata->symtab->nsyms;
3af9a47b
NC		 890}
891
154a1ee5 892long
116c20d2 893bfd_mach_o_get_symtab_upper_bound (bfd *abfd)
3af9a47b
NC		 894{
895 long nsyms = bfd_mach_o_count_symbols (abfd);
896
3af9a47b
NC		 897 return ((nsyms + 1) * sizeof (asymbol *));
898}
899
154a1ee5 900long
116c20d2 901bfd_mach_o_canonicalize_symtab (bfd *abfd, asymbol **alocation)
3af9a47b 902{
046b007d 903 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
3af9a47b 904 long nsyms = bfd_mach_o_count_symbols (abfd);
046b007d
TG		 905 bfd_mach_o_symtab_command *sym = mdata->symtab;
906 unsigned long j;
3af9a47b
NC		 907
908 if (nsyms < 0)
909 return nsyms;
910
092d27ff
TG		 911 if (nsyms == 0)
912 {
913 /* Do not try to read symbols if there are none. */
914 alocation[0] = NULL;
915 return 0;
916 }
917
afbb9e17 918 if (!bfd_mach_o_read_symtab_symbols (abfd))
3af9a47b 919 {
4eca0228 920 _bfd_error_handler
07d6d2b8 921 (_("bfd_mach_o_canonicalize_symtab: unable to load symbols"));
a1f4d069 922 return -1;
046b007d 923 }
3af9a47b 924
046b007d 925 BFD_ASSERT (sym->symbols != NULL);
3af9a47b 926
046b007d
TG		 927 for (j = 0; j < sym->nsyms; j++)
928 alocation[j] = &sym->symbols[j].symbol;
3af9a47b 929
046b007d 930 alocation[j] = NULL;
a95a4550 931
3af9a47b
NC		 932 return nsyms;
933}
934
aeefa1c9
TG		 935/* Create synthetic symbols for indirect symbols. */
936
b2b62060
TG		 937long
938bfd_mach_o_get_synthetic_symtab (bfd *abfd,
07d6d2b8
AM		 939 long symcount ATTRIBUTE_UNUSED,
940 asymbol **syms ATTRIBUTE_UNUSED,
941 long dynsymcount ATTRIBUTE_UNUSED,
942 asymbol **dynsyms ATTRIBUTE_UNUSED,
943 asymbol **ret)
b2b62060
TG		 944{
945 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
946 bfd_mach_o_dysymtab_command *dysymtab = mdata->dysymtab;
947 bfd_mach_o_symtab_command *symtab = mdata->symtab;
948 asymbol *s;
896ca098 949 char * s_start;
b2b62060
TG		 950 unsigned long count, i, j, n;
951 size_t size;
952 char *names;
896ca098 953 const char stub [] = "$stub";
b2b62060
TG		 954
955 *ret = NULL;
956
aeefa1c9 957 /* Stop now if no symbols or no indirect symbols. */
896ca098
NC		 958 if (dysymtab == NULL || dysymtab->nindirectsyms == 0
959 || symtab == NULL || symtab->symbols == NULL)
b2b62060
TG		 960 return 0;
961
aeefa1c9
TG		 962 /* We need to allocate a bfd symbol for every indirect symbol and to
963 allocate the memory for its name. */
b2b62060 964 count = dysymtab->nindirectsyms;
d12f8998 965 size = 0;
b2b62060
TG		 966 for (j = 0; j < count; j++)
967 {
968 unsigned int isym = dysymtab->indirect_syms[j];
d12f8998 969 const char *str;
aeefa1c9
TG		 970
971 /* Some indirect symbols are anonymous. */
d12f8998
AM		 972 if (isym < symtab->nsyms
973 && (str = symtab->symbols[isym].symbol.name) != NULL)
974 {
975 /* PR 17512: file: f5b8eeba. */
976 size += strnlen (str, symtab->strsize - (str - symtab->strtab));
977 size += sizeof (stub);
978 }
b2b62060
TG		 979 }
980
d12f8998 981 s_start = bfd_malloc (size + count * sizeof (asymbol));
896ca098 982 s = *ret = (asymbol *) s_start;
b2b62060
TG		 983 if (s == NULL)
984 return -1;
985 names = (char *) (s + count);
68ffbac6 986
b2b62060
TG		 987 n = 0;
988 for (i = 0; i < mdata->nsects; i++)
989 {
990 bfd_mach_o_section *sec = mdata->sections[i];
91d6fa6a 991 unsigned int first, last;
b2b62060 992 bfd_vma addr;
f7a559d5 993 unsigned int entry_size;
68ffbac6 994
b2b62060 995 switch (sec->flags & BFD_MACH_O_SECTION_TYPE_MASK)
07d6d2b8
AM		 996 {
997 case BFD_MACH_O_S_NON_LAZY_SYMBOL_POINTERS:
998 case BFD_MACH_O_S_LAZY_SYMBOL_POINTERS:
999 case BFD_MACH_O_S_SYMBOL_STUBS:
1000 /* Only these sections have indirect symbols. */
1001 first = sec->reserved1;
1002 last = first + bfd_mach_o_section_get_nbr_indirect (abfd, sec);
1003 addr = sec->addr;
1004 entry_size = bfd_mach_o_section_get_entry_size (abfd, sec);
896ca098
NC		 1005
1006 /* PR 17512: file: 08e15eec. */
d12f8998 1007 if (first >= count || last > count || first > last)
896ca098
NC		 1008 goto fail;
1009
07d6d2b8
AM		 1010 for (j = first; j < last; j++)
1011 {
1012 unsigned int isym = dysymtab->indirect_syms[j];
d12f8998
AM		 1013 const char *str;
1014 size_t len;
68ffbac6 1015
07d6d2b8 1016 if (isym < symtab->nsyms
d12f8998 1017 && (str = symtab->symbols[isym].symbol.name) != NULL)
07d6d2b8 1018 {
d12f8998
AM		 1019 /* PR 17512: file: 04d64d9b. */
1020 if (n >= count)
896ca098 1021 goto fail;
d12f8998
AM		 1022 len = strnlen (str, symtab->strsize - (str - symtab->strtab));
1023 /* PR 17512: file: 47dfd4d2, 18f340a4. */
1024 if (size < len + sizeof (stub))
896ca098 1025 goto fail;
d12f8998
AM		 1026 memcpy (names, str, len);
1027 memcpy (names + len, stub, sizeof (stub));
1028 s->name = names;
1029 names += len + sizeof (stub);
1030 size -= len + sizeof (stub);
1031 s->the_bfd = symtab->symbols[isym].symbol.the_bfd;
1032 s->flags = BSF_GLOBAL | BSF_SYNTHETIC;
1033 s->section = sec->bfdsection;
1034 s->value = addr - sec->addr;
1035 s->udata.p = NULL;
1036 s++;
1037 n++;
07d6d2b8 1038 }
07d6d2b8 1039 addr += entry_size;
07d6d2b8
AM		 1040 }
1041 break;
1042 default:
1043 break;
1044 }
b2b62060
TG		 1045 }
1046
1047 return n;
896ca098
NC		 1048
1049 fail:
1050 free (s_start);
1051 * ret = NULL;
1052 return -1;
b2b62060
TG		 1053}
1054
154a1ee5 1055void
116c20d2
NC		 1056bfd_mach_o_get_symbol_info (bfd *abfd ATTRIBUTE_UNUSED,
1057 asymbol *symbol,
1058 symbol_info *ret)
3af9a47b
NC		 1059{
1060 bfd_symbol_info (symbol, ret);
1061}
1062
154a1ee5 1063void
116c20d2 1064bfd_mach_o_print_symbol (bfd *abfd,
91d6fa6a 1065 void * afile,
116c20d2
NC		 1066 asymbol *symbol,
1067 bfd_print_symbol_type how)
3af9a47b
NC		 1068{
1069 FILE *file = (FILE *) afile;
15e1c58a 1070 const char *name;
92bc0e80 1071 bfd_mach_o_asymbol *asym = (bfd_mach_o_asymbol *)symbol;
3af9a47b
NC		 1072
1073 switch (how)
1074 {
1075 case bfd_print_symbol_name:
1076 fprintf (file, "%s", symbol->name);
1077 break;
1078 default:
91d6fa6a 1079 bfd_print_symbol_vandf (abfd, (void *) file, symbol);
92bc0e80
TG		 1080 if (asym->n_type & BFD_MACH_O_N_STAB)
1081 name = bfd_get_stab_name (asym->n_type);
15e1c58a 1082 else
92bc0e80 1083 switch (asym->n_type & BFD_MACH_O_N_TYPE)
15e1c58a
TG		 1084 {
1085 case BFD_MACH_O_N_UNDF:
07d6d2b8
AM		 1086 if (symbol->value == 0)
1087 name = "UND";
1088 else
1089 name = "COM";
15e1c58a
TG		 1090 break;
1091 case BFD_MACH_O_N_ABS:
1092 name = "ABS";
1093 break;
1094 case BFD_MACH_O_N_INDR:
1095 name = "INDR";
1096 break;
1097 case BFD_MACH_O_N_PBUD:
1098 name = "PBUD";
1099 break;
1100 case BFD_MACH_O_N_SECT:
1101 name = "SECT";
1102 break;
1103 default:
1104 name = "???";
1105 break;
1106 }
1107 if (name == NULL)
1108 name = "";
92bc0e80 1109 fprintf (file, " %02x %-6s %02x %04x",
07d6d2b8 1110 asym->n_type, name, asym->n_sect, asym->n_desc);
92bc0e80
TG		 1111 if ((asym->n_type & BFD_MACH_O_N_STAB) == 0
1112 && (asym->n_type & BFD_MACH_O_N_TYPE) == BFD_MACH_O_N_SECT)
e0ce1005 1113 fprintf (file, " [%s]", symbol->section->name);
15e1c58a 1114 fprintf (file, " %s", symbol->name);
3af9a47b
NC		 1115 }
1116}
1117
1118static void
116c20d2 1119bfd_mach_o_convert_architecture (bfd_mach_o_cpu_type mtype,
0b2de107 1120 bfd_mach_o_cpu_subtype msubtype,
116c20d2
NC		 1121 enum bfd_architecture *type,
1122 unsigned long *subtype)
3af9a47b
NC		 1123{
1124 *subtype = bfd_arch_unknown;
1125
1126 switch (mtype)
1127 {
0b2de107
TG		 1128 case BFD_MACH_O_CPU_TYPE_VAX:
1129 *type = bfd_arch_vax;
1130 break;
1131 case BFD_MACH_O_CPU_TYPE_MC680x0:
1132 *type = bfd_arch_m68k;
1133 break;
1e8a024a
TG		 1134 case BFD_MACH_O_CPU_TYPE_I386:
1135 *type = bfd_arch_i386;
1136 *subtype = bfd_mach_i386_i386;
1137 break;
1138 case BFD_MACH_O_CPU_TYPE_X86_64:
1139 *type = bfd_arch_i386;
1140 *subtype = bfd_mach_x86_64;
1141 break;
0b2de107
TG		 1142 case BFD_MACH_O_CPU_TYPE_MIPS:
1143 *type = bfd_arch_mips;
1144 break;
1145 case BFD_MACH_O_CPU_TYPE_MC98000:
1146 *type = bfd_arch_m98k;
1147 break;
1148 case BFD_MACH_O_CPU_TYPE_HPPA:
1149 *type = bfd_arch_hppa;
1150 break;
1151 case BFD_MACH_O_CPU_TYPE_ARM:
1152 *type = bfd_arch_arm;
1153 switch (msubtype)
07d6d2b8
AM		 1154 {
1155 case BFD_MACH_O_CPU_SUBTYPE_ARM_V4T:
1156 *subtype = bfd_mach_arm_4T;
1157 break;
1158 case BFD_MACH_O_CPU_SUBTYPE_ARM_V6:
1159 *subtype = bfd_mach_arm_4T; /* Best fit ? */
1160 break;
1161 case BFD_MACH_O_CPU_SUBTYPE_ARM_V5TEJ:
1162 *subtype = bfd_mach_arm_5TE;
1163 break;
1164 case BFD_MACH_O_CPU_SUBTYPE_ARM_XSCALE:
1165 *subtype = bfd_mach_arm_XScale;
1166 break;
1167 case BFD_MACH_O_CPU_SUBTYPE_ARM_V7:
1168 *subtype = bfd_mach_arm_5TE; /* Best fit ? */
1169 break;
1170 case BFD_MACH_O_CPU_SUBTYPE_ARM_ALL:
1171 default:
1172 break;
1173 }
0b2de107 1174 break;
1e8a024a
TG		 1175 case BFD_MACH_O_CPU_TYPE_SPARC:
1176 *type = bfd_arch_sparc;
1177 *subtype = bfd_mach_sparc;
1178 break;
0b2de107
TG		 1179 case BFD_MACH_O_CPU_TYPE_ALPHA:
1180 *type = bfd_arch_alpha;
1181 break;
1e8a024a
TG		 1182 case BFD_MACH_O_CPU_TYPE_POWERPC:
1183 *type = bfd_arch_powerpc;
c2f09c75 1184 *subtype = bfd_mach_ppc;
1e8a024a
TG		 1185 break;
1186 case BFD_MACH_O_CPU_TYPE_POWERPC_64:
1187 *type = bfd_arch_powerpc;
c2f09c75 1188 *subtype = bfd_mach_ppc64;
1e8a024a 1189 break;
d8028530
TG		 1190 case BFD_MACH_O_CPU_TYPE_ARM64:
1191 *type = bfd_arch_aarch64;
1192 *subtype = bfd_mach_aarch64;
1193 break;
3af9a47b 1194 default:
1e8a024a
TG		 1195 *type = bfd_arch_unknown;
1196 break;
3af9a47b
NC		 1197 }
1198}
a95a4550 1199
c9ffd2ea
TG		 1200/* Write n NUL bytes to ABFD so that LEN + n is a multiple of 4. Return the
1201 number of bytes written or -1 in case of error. */
1202
1203static int
f7a559d5 1204bfd_mach_o_pad4 (bfd *abfd, size_t len)
c9ffd2ea
TG		 1205{
1206 if (len % 4 != 0)
1207 {
1208 char pad[4] = {0,0,0,0};
1209 unsigned int padlen = 4 - (len % 4);
1210
226f9f4f 1211 if (bfd_write (pad, padlen, abfd) != padlen)
c9ffd2ea
TG		 1212 return -1;
1213
1214 return padlen;
1215 }
1216 else
1217 return 0;
1218}
1219
1220/* Likewise, but for a command. */
1221
1222static int
f7a559d5 1223bfd_mach_o_pad_command (bfd *abfd, size_t len)
c9ffd2ea 1224{
f7a559d5 1225 size_t align = bfd_mach_o_wide_p (abfd) ? 8 : 4;
c9ffd2ea
TG		 1226
1227 if (len % align != 0)
1228 {
1229 char pad[8] = {0};
f7a559d5 1230 size_t padlen = align - (len % align);
c9ffd2ea 1231
226f9f4f 1232 if (bfd_write (pad, padlen, abfd) != padlen)
c9ffd2ea
TG		 1233 return -1;
1234
1235 return padlen;
1236 }
1237 else
1238 return 0;
1239}
1240
0a1b45a2 1241static bool
116c20d2
NC		 1242bfd_mach_o_write_header (bfd *abfd, bfd_mach_o_header *header)
1243{
46d1c23b 1244 struct mach_o_header_external raw;
f7a559d5 1245 size_t size;
1e8a024a 1246
c2f09c75 1247 size = mach_o_wide_p (header) ?
154a1ee5 1248 BFD_MACH_O_HEADER_64_SIZE : BFD_MACH_O_HEADER_SIZE;
116c20d2 1249
46d1c23b
TG		 1250 bfd_h_put_32 (abfd, header->magic, raw.magic);
1251 bfd_h_put_32 (abfd, header->cputype, raw.cputype);
1252 bfd_h_put_32 (abfd, header->cpusubtype, raw.cpusubtype);
1253 bfd_h_put_32 (abfd, header->filetype, raw.filetype);
1254 bfd_h_put_32 (abfd, header->ncmds, raw.ncmds);
1255 bfd_h_put_32 (abfd, header->sizeofcmds, raw.sizeofcmds);
1256 bfd_h_put_32 (abfd, header->flags, raw.flags);
116c20d2 1257
c2f09c75 1258 if (mach_o_wide_p (header))
46d1c23b 1259 bfd_h_put_32 (abfd, header->reserved, raw.reserved);
1e8a024a 1260
c2f09c75 1261 if (bfd_seek (abfd, 0, SEEK_SET) != 0
226f9f4f 1262 || bfd_write (&raw, size, abfd) != size)
0a1b45a2 1263 return false;
116c20d2 1264
0a1b45a2 1265 return true;
116c20d2
NC		 1266}
1267
0a1b45a2 1268static bool
ab273af8 1269bfd_mach_o_write_thread (bfd *abfd, bfd_mach_o_load_command *command)
116c20d2
NC		 1270{
1271 bfd_mach_o_thread_command *cmd = &command->command.thread;
1272 unsigned int i;
46d1c23b 1273 struct mach_o_thread_command_external raw;
f7a559d5 1274 size_t offset;
116c20d2
NC		 1275
1276 BFD_ASSERT ((command->type == BFD_MACH_O_LC_THREAD)
1277 || (command->type == BFD_MACH_O_LC_UNIXTHREAD));
1278
c9ffd2ea 1279 offset = BFD_MACH_O_LC_SIZE;
116c20d2
NC		 1280 for (i = 0; i < cmd->nflavours; i++)
1281 {
1282 BFD_ASSERT ((cmd->flavours[i].size % 4) == 0);
f7a559d5
AM		 1283 BFD_ASSERT (cmd->flavours[i].offset
1284 == command->offset + offset + BFD_MACH_O_LC_SIZE);
116c20d2 1285
46d1c23b
TG		 1286 bfd_h_put_32 (abfd, cmd->flavours[i].flavour, raw.flavour);
1287 bfd_h_put_32 (abfd, (cmd->flavours[i].size / 4), raw.count);
116c20d2 1288
c2f09c75 1289 if (bfd_seek (abfd, command->offset + offset, SEEK_SET) != 0
226f9f4f 1290 || bfd_write (&raw, sizeof (raw), abfd) != sizeof (raw))
0a1b45a2 1291 return false;
116c20d2 1292
46d1c23b 1293 offset += cmd->flavours[i].size + sizeof (raw);
116c20d2
NC		 1294 }
1295
0a1b45a2 1296 return true;
116c20d2
NC		 1297}
1298
0a1b45a2 1299static bool
c9ffd2ea
TG		 1300bfd_mach_o_write_dylinker (bfd *abfd, bfd_mach_o_load_command *command)
1301{
1302 bfd_mach_o_dylinker_command *cmd = &command->command.dylinker;
1303 struct mach_o_str_command_external raw;
f7a559d5 1304 size_t namelen;
c9ffd2ea
TG		 1305
1306 bfd_h_put_32 (abfd, cmd->name_offset, raw.str);
1307
1308 if (bfd_seek (abfd, command->offset + BFD_MACH_O_LC_SIZE, SEEK_SET) != 0
226f9f4f 1309 || bfd_write (&raw, sizeof (raw), abfd) != sizeof (raw))
0a1b45a2 1310 return false;
c9ffd2ea
TG		 1311
1312 namelen = strlen (cmd->name_str) + 1;
226f9f4f 1313 if (bfd_write (cmd->name_str, namelen, abfd) != namelen)
0a1b45a2 1314 return false;
c9ffd2ea
TG		 1315
1316 if (bfd_mach_o_pad_command (abfd, namelen) < 0)
0a1b45a2 1317 return false;
c9ffd2ea 1318
0a1b45a2 1319 return true;
c9ffd2ea
TG		 1320}
1321
0a1b45a2 1322static bool
c9ffd2ea
TG		 1323bfd_mach_o_write_dylib (bfd *abfd, bfd_mach_o_load_command *command)
1324{
1325 bfd_mach_o_dylib_command *cmd = &command->command.dylib;
1326 struct mach_o_dylib_command_external raw;
f7a559d5 1327 size_t namelen;
c9ffd2ea
TG		 1328
1329 bfd_h_put_32 (abfd, cmd->name_offset, raw.name);
1330 bfd_h_put_32 (abfd, cmd->timestamp, raw.timestamp);
1331 bfd_h_put_32 (abfd, cmd->current_version, raw.current_version);
1332 bfd_h_put_32 (abfd, cmd->compatibility_version, raw.compatibility_version);
1333
1334 if (bfd_seek (abfd, command->offset + BFD_MACH_O_LC_SIZE, SEEK_SET) != 0
226f9f4f 1335 || bfd_write (&raw, sizeof (raw), abfd) != sizeof (raw))
0a1b45a2 1336 return false;
c9ffd2ea
TG		 1337
1338 namelen = strlen (cmd->name_str) + 1;
226f9f4f 1339 if (bfd_write (cmd->name_str, namelen, abfd) != namelen)
0a1b45a2 1340 return false;
c9ffd2ea
TG		 1341
1342 if (bfd_mach_o_pad_command (abfd, namelen) < 0)
0a1b45a2 1343 return false;
c9ffd2ea 1344
0a1b45a2 1345 return true;
c9ffd2ea
TG		 1346}
1347
0a1b45a2 1348static bool
c9ffd2ea
TG		 1349bfd_mach_o_write_main (bfd *abfd, bfd_mach_o_load_command *command)
1350{
1351 bfd_mach_o_main_command *cmd = &command->command.main;
1352 struct mach_o_entry_point_command_external raw;
1353
1354 bfd_h_put_64 (abfd, cmd->entryoff, raw.entryoff);
1355 bfd_h_put_64 (abfd, cmd->stacksize, raw.stacksize);
1356
1357 if (bfd_seek (abfd, command->offset + BFD_MACH_O_LC_SIZE, SEEK_SET) != 0
226f9f4f 1358 || bfd_write (&raw, sizeof (raw), abfd) != sizeof (raw))
0a1b45a2 1359 return false;
c9ffd2ea 1360
0a1b45a2 1361 return true;
c9ffd2ea
TG		 1362}
1363
0a1b45a2 1364static bool
c9ffd2ea
TG		 1365bfd_mach_o_write_dyld_info (bfd *abfd, bfd_mach_o_load_command *command)
1366{
1367 bfd_mach_o_dyld_info_command *cmd = &command->command.dyld_info;
1368 struct mach_o_dyld_info_command_external raw;
1369
1370 bfd_h_put_32 (abfd, cmd->rebase_off, raw.rebase_off);
1371 bfd_h_put_32 (abfd, cmd->rebase_size, raw.rebase_size);
1372 bfd_h_put_32 (abfd, cmd->bind_off, raw.bind_off);
1373 bfd_h_put_32 (abfd, cmd->bind_size, raw.bind_size);
1374 bfd_h_put_32 (abfd, cmd->weak_bind_off, raw.weak_bind_off);
1375 bfd_h_put_32 (abfd, cmd->weak_bind_size, raw.weak_bind_size);
1376 bfd_h_put_32 (abfd, cmd->lazy_bind_off, raw.lazy_bind_off);
1377 bfd_h_put_32 (abfd, cmd->lazy_bind_size, raw.lazy_bind_size);
1378 bfd_h_put_32 (abfd, cmd->export_off, raw.export_off);
1379 bfd_h_put_32 (abfd, cmd->export_size, raw.export_size);
1380
1381 if (bfd_seek (abfd, command->offset + BFD_MACH_O_LC_SIZE, SEEK_SET) != 0
226f9f4f 1382 || bfd_write (&raw, sizeof (raw), abfd) != sizeof (raw))
0a1b45a2 1383 return false;
c9ffd2ea
TG		 1384
1385 if (cmd->rebase_size != 0)
1386 if (bfd_seek (abfd, cmd->rebase_off, SEEK_SET) != 0
226f9f4f 1387 || (bfd_write (cmd->rebase_content, cmd->rebase_size, abfd) !=
c9ffd2ea 1388 cmd->rebase_size))
0a1b45a2 1389 return false;
c9ffd2ea
TG		 1390
1391 if (cmd->bind_size != 0)
1392 if (bfd_seek (abfd, cmd->bind_off, SEEK_SET) != 0
226f9f4f 1393 || (bfd_write (cmd->bind_content, cmd->bind_size, abfd) !=
c9ffd2ea 1394 cmd->bind_size))
0a1b45a2 1395 return false;
c9ffd2ea
TG		 1396
1397 if (cmd->weak_bind_size != 0)
1398 if (bfd_seek (abfd, cmd->weak_bind_off, SEEK_SET) != 0
226f9f4f 1399 || (bfd_write (cmd->weak_bind_content, cmd->weak_bind_size, abfd) !=
c9ffd2ea 1400 cmd->weak_bind_size))
0a1b45a2 1401 return false;
c9ffd2ea
TG		 1402
1403 if (cmd->lazy_bind_size != 0)
1404 if (bfd_seek (abfd, cmd->lazy_bind_off, SEEK_SET) != 0
226f9f4f 1405 || (bfd_write (cmd->lazy_bind_content, cmd->lazy_bind_size, abfd) !=
c9ffd2ea 1406 cmd->lazy_bind_size))
0a1b45a2 1407 return false;
c9ffd2ea
TG		 1408
1409 if (cmd->export_size != 0)
1410 if (bfd_seek (abfd, cmd->export_off, SEEK_SET) != 0
226f9f4f 1411 || (bfd_write (cmd->export_content, cmd->export_size, abfd) !=
c9ffd2ea 1412 cmd->export_size))
0a1b45a2 1413 return false;
c9ffd2ea 1414
0a1b45a2 1415 return true;
c9ffd2ea
TG		 1416}
1417
92bc0e80 1418long
a3eb71ad 1419bfd_mach_o_get_reloc_upper_bound (bfd *abfd, asection *asect)
92bc0e80 1420{
a3eb71ad
AM		 1421 size_t count, raw;
1422
1423 count = asect->reloc_count;
1424 if (count >= LONG_MAX / sizeof (arelent *)
1425 || _bfd_mul_overflow (count, BFD_MACH_O_RELENT_SIZE, &raw))
7a6e0d89
AM		 1426 {
1427 bfd_set_error (bfd_error_file_too_big);
1428 return -1;
1429 }
a3eb71ad
AM		 1430 if (!bfd_write_p (abfd))
1431 {
1432 ufile_ptr filesize = bfd_get_file_size (abfd);
1433 if (filesize != 0 && raw > filesize)
1434 {
1435 bfd_set_error (bfd_error_file_truncated);
1436 return -1;
1437 }
1438 }
1439 return (count + 1) * sizeof (arelent *);
92bc0e80
TG		 1440}
1441
19765f52
IS		 1442/* In addition to the need to byte-swap the symbol number, the bit positions
1443 of the fields in the relocation information vary per target endian-ness. */
1444
bcb51645 1445void
19765f52 1446bfd_mach_o_swap_in_non_scattered_reloc (bfd *abfd, bfd_mach_o_reloc_info *rel,
c6643fcc 1447 unsigned char *fields)
19765f52
IS		 1448{
1449 unsigned char info = fields[3];
1450
1451 if (bfd_big_endian (abfd))
1452 {
1453 rel->r_value = (fields[0] << 16) | (fields[1] << 8) | fields[2];
1454 rel->r_type = (info >> BFD_MACH_O_BE_TYPE_SHIFT) & BFD_MACH_O_TYPE_MASK;
1455 rel->r_pcrel = (info & BFD_MACH_O_BE_PCREL) ? 1 : 0;
68ffbac6 1456 rel->r_length = (info >> BFD_MACH_O_BE_LENGTH_SHIFT)
19765f52
IS		 1457 & BFD_MACH_O_LENGTH_MASK;
1458 rel->r_extern = (info & BFD_MACH_O_BE_EXTERN) ? 1 : 0;
1459 }
1460 else
1461 {
1462 rel->r_value = (fields[2] << 16) | (fields[1] << 8) | fields[0];
1463 rel->r_type = (info >> BFD_MACH_O_LE_TYPE_SHIFT) & BFD_MACH_O_TYPE_MASK;
1464 rel->r_pcrel = (info & BFD_MACH_O_LE_PCREL) ? 1 : 0;
68ffbac6 1465 rel->r_length = (info >> BFD_MACH_O_LE_LENGTH_SHIFT)
19765f52
IS		 1466 & BFD_MACH_O_LENGTH_MASK;
1467 rel->r_extern = (info & BFD_MACH_O_LE_EXTERN) ? 1 : 0;
1468 }
1469}
1470
bcb51645
TG		 1471/* Set syms_ptr_ptr and addend of RES. */
1472
0a1b45a2 1473bool
bcb51645
TG		 1474bfd_mach_o_canonicalize_non_scattered_reloc (bfd *abfd,
1475 bfd_mach_o_reloc_info *reloc,
1476 arelent *res, asymbol **syms)
92bc0e80 1477{
046b007d 1478 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
bcb51645 1479 unsigned int num;
b32e07d7
TG		 1480 asymbol **sym;
1481
bcb51645
TG		 1482 /* Non-scattered relocation. */
1483 reloc->r_scattered = 0;
1484 res->addend = 0;
1485
1486 num = reloc->r_value;
1487
1488 if (reloc->r_extern)
1489 {
1490 /* PR 17512: file: 8396-1185-0.004. */
1491 if (num >= (unsigned) bfd_mach_o_count_symbols (abfd))
1492 sym = bfd_und_section_ptr->symbol_ptr_ptr;
1493 else if (syms == NULL)
1494 sym = bfd_und_section_ptr->symbol_ptr_ptr;
1495 else
1496 /* An external symbol number. */
1497 sym = syms + num;
1498 }
1499 else if (num == 0x00ffffff || num == 0)
1500 {
1501 /* The 'symnum' in a non-scattered PAIR is 0x00ffffff. But as this
1502 is generic code, we don't know wether this is really a PAIR.
1503 This value is almost certainly not a valid section number, hence
1504 this specific case to avoid an assertion failure.
1505 Target specific swap_reloc_in routine should adjust that. */
1506 sym = bfd_abs_section_ptr->symbol_ptr_ptr;
1507 }
1508 else
1509 {
1510 /* PR 17512: file: 006-2964-0.004. */
1511 if (num > mdata->nsects)
a68aa5d3
NC		 1512 {
1513 _bfd_error_handler (_("\
1514malformed mach-o reloc: section index is greater than the number of sections"));
0a1b45a2 1515 return false;
a68aa5d3 1516 }
bcb51645
TG		 1517
1518 /* A section number. */
1519 sym = mdata->sections[num - 1]->bfdsection->symbol_ptr_ptr;
1520 /* For a symbol defined in section S, the addend (stored in the
1521 binary) contains the address of the section. To comply with
1522 bfd convention, subtract the section address.
1523 Use the address from the header, so that the user can modify
07d6d2b8 1524 the vma of the section. */
bcb51645
TG		 1525 res->addend = -mdata->sections[num - 1]->addr;
1526 }
1527
1528 /* Note: Pairs for PPC LO/HI/HA are not scattered, but contain the offset
1529 in the lower 16bits of the address value. So we have to find the
1530 'symbol' from the preceding reloc. We do this even though the
1531 section symbol is probably not needed here, because NULL symbol
1532 values cause an assert in generic BFD code. This must be done in
1533 the PPC swap_reloc_in routine. */
1534 res->sym_ptr_ptr = sym;
1535
0a1b45a2 1536 return true;
bcb51645
TG		 1537}
1538
1539/* Do most of the work for canonicalize_relocs on RAW: create internal
1540 representation RELOC and set most fields of RES using symbol table SYMS.
1541 Each target still has to set the howto of RES and possibly adjust other
1542 fields.
1543 Previously the Mach-O hook point was simply swap_in, but some targets
1544 (like arm64) don't follow the generic rules (symnum is a value for the
1545 non-scattered relocation ADDEND). */
1546
0a1b45a2 1547bool
bcb51645
TG		 1548bfd_mach_o_pre_canonicalize_one_reloc (bfd *abfd,
1549 struct mach_o_reloc_info_external *raw,
1550 bfd_mach_o_reloc_info *reloc,
1551 arelent *res, asymbol **syms)
1552{
1553 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
1554 bfd_vma addr;
1555
46d1c23b 1556 addr = bfd_get_32 (abfd, raw->r_address);
a1f4d069 1557 res->sym_ptr_ptr = bfd_und_section_ptr->symbol_ptr_ptr;
19765f52 1558 res->addend = 0;
f4716ee2 1559
b32e07d7
TG		 1560 if (addr & BFD_MACH_O_SR_SCATTERED)
1561 {
1562 unsigned int j;
19765f52 1563 bfd_vma symnum = bfd_get_32 (abfd, raw->r_symbolnum);
b32e07d7 1564
19765f52 1565 /* Scattered relocation, can't be extern. */
bcb51645
TG		 1566 reloc->r_scattered = 1;
1567 reloc->r_extern = 0;
19765f52
IS		 1568
1569 /* Extract section and offset from r_value (symnum). */
bcb51645 1570 reloc->r_value = symnum;
19765f52
IS		 1571 /* FIXME: This breaks when a symbol in a reloc exactly follows the
1572 end of the data for the section (e.g. in a calculation of section
1573 data length). At present, the symbol will end up associated with
1574 the following section or, if it falls within alignment padding, as
a1f4d069 1575 the undefined section symbol. */
b32e07d7 1576 for (j = 0; j < mdata->nsects; j++)
07d6d2b8
AM		 1577 {
1578 bfd_mach_o_section *sect = mdata->sections[j];
1579 if (symnum >= sect->addr && symnum < sect->addr + sect->size)
1580 {
1581 res->sym_ptr_ptr = sect->bfdsection->symbol_ptr_ptr;
1582 res->addend = symnum - sect->addr;
1583 break;
1584 }
1585 }
19765f52
IS		 1586
1587 /* Extract the info and address fields from r_address. */
bcb51645
TG		 1588 reloc->r_type = BFD_MACH_O_GET_SR_TYPE (addr);
1589 reloc->r_length = BFD_MACH_O_GET_SR_LENGTH (addr);
1590 reloc->r_pcrel = addr & BFD_MACH_O_SR_PCREL;
1591 reloc->r_address = BFD_MACH_O_GET_SR_TYPE (addr);
19765f52 1592 res->address = BFD_MACH_O_GET_SR_ADDRESS (addr);
b32e07d7
TG		 1593 }
1594 else
1595 {
19765f52 1596 /* Non-scattered relocation. */
bcb51645
TG		 1597 reloc->r_scattered = 0;
1598 reloc->r_address = addr;
1599 res->address = addr;
f4716ee2 1600
19765f52 1601 /* The value and info fields have to be extracted dependent on target
07d6d2b8 1602 endian-ness. */
bcb51645 1603 bfd_mach_o_swap_in_non_scattered_reloc (abfd, reloc, raw->r_symbolnum);
19765f52 1604
bcb51645
TG		 1605 if (!bfd_mach_o_canonicalize_non_scattered_reloc (abfd, reloc,
1606 res, syms))
0a1b45a2 1607 return false;
b32e07d7 1608 }
f4716ee2
TG		 1609
1610 /* We have set up a reloc with all the information present, so the swapper
1611 can modify address, value and addend fields, if necessary, to convey
1612 information in the generic BFD reloc that is mach-o specific. */
19765f52 1613
0a1b45a2 1614 return true;
b32e07d7
TG		 1615}
1616
1617static int
1618bfd_mach_o_canonicalize_relocs (bfd *abfd, unsigned long filepos,
07d6d2b8
AM		 1619 unsigned long count,
1620 arelent *res, asymbol **syms)
b32e07d7 1621{
bcb51645 1622 bfd_mach_o_backend_data *bed = bfd_mach_o_get_backend_data (abfd);
92bc0e80 1623 unsigned long i;
a68aa5d3 1624 struct mach_o_reloc_info_external *native_relocs = NULL;
a4425a57 1625 size_t native_size;
92bc0e80 1626
92bc0e80 1627 /* Allocate and read relocs. */
a4425a57
AM		 1628 if (_bfd_mul_overflow (count, BFD_MACH_O_RELENT_SIZE, &native_size))
1629 /* PR 17512: file: 09477b57. */
a68aa5d3 1630 goto err;
64d29018 1631
2bb3687b
AM		 1632 if (bfd_seek (abfd, filepos, SEEK_SET) != 0)
1633 return -1;
1634 native_relocs = (struct mach_o_reloc_info_external *)
1635 _bfd_malloc_and_read (abfd, native_size, native_size);
92bc0e80
TG		 1636 if (native_relocs == NULL)
1637 return -1;
1638
b32e07d7 1639 for (i = 0; i < count; i++)
92bc0e80 1640 {
bcb51645 1641 if (!(*bed->_bfd_mach_o_canonicalize_one_reloc)(abfd, &native_relocs[i],
ca4cf9b9 1642 &res[i], syms, res))
07d6d2b8 1643 goto err;
92bc0e80 1644 }
b32e07d7
TG		 1645 free (native_relocs);
1646 return i;
a68aa5d3 1647
b32e07d7
TG		 1648 err:
1649 free (native_relocs);
a68aa5d3
NC		 1650 if (bfd_get_error () == bfd_error_no_error)
1651 bfd_set_error (bfd_error_invalid_operation);
b32e07d7
TG		 1652 return -1;
1653}
1654
1655long
1656bfd_mach_o_canonicalize_reloc (bfd *abfd, asection *asect,
07d6d2b8 1657 arelent **rels, asymbol **syms)
b32e07d7
TG		 1658{
1659 bfd_mach_o_backend_data *bed = bfd_mach_o_get_backend_data (abfd);
1660 unsigned long i;
1661 arelent *res;
1662
1663 if (asect->reloc_count == 0)
1664 return 0;
1665
1666 /* No need to go further if we don't know how to read relocs. */
bcb51645 1667 if (bed->_bfd_mach_o_canonicalize_one_reloc == NULL)
b32e07d7 1668 return 0;
92bc0e80 1669
dff55db0 1670 if (asect->relocation == NULL)
92bc0e80 1671 {
a4425a57
AM		 1672 size_t amt;
1673
1674 if (_bfd_mul_overflow (asect->reloc_count, sizeof (arelent), &amt))
ac71c620
AM		 1675 {
1676 bfd_set_error (bfd_error_file_too_big);
1677 return -1;
1678 }
a4425a57 1679 res = bfd_malloc (amt);
dff55db0 1680 if (res == NULL)
07d6d2b8 1681 return -1;
dff55db0
TG		 1682
1683 if (bfd_mach_o_canonicalize_relocs (abfd, asect->rel_filepos,
07d6d2b8
AM		 1684 asect->reloc_count, res, syms) < 0)
1685 {
1686 free (res);
1687 return -1;
1688 }
dff55db0 1689 asect->relocation = res;
92bc0e80
TG		 1690 }
1691
dff55db0 1692 res = asect->relocation;
92bc0e80 1693 for (i = 0; i < asect->reloc_count; i++)
b32e07d7
TG		 1694 rels[i] = &res[i];
1695 rels[i] = NULL;
92bc0e80 1696
b32e07d7
TG		 1697 return i;
1698}
92bc0e80 1699
b32e07d7
TG		 1700long
1701bfd_mach_o_get_dynamic_reloc_upper_bound (bfd *abfd)
1702{
1703 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
92376883 1704 bfd_mach_o_dysymtab_command *dysymtab = mdata->dysymtab;
92bc0e80 1705
92376883 1706 if (dysymtab == NULL)
b32e07d7 1707 return 1;
92376883
AM		 1708
1709 ufile_ptr filesize = bfd_get_file_size (abfd);
1710 size_t amt;
1711
1712 if (filesize != 0)
1713 {
1714 if (dysymtab->extreloff > filesize
1715 || dysymtab->nextrel > ((filesize - dysymtab->extreloff)
1716 / BFD_MACH_O_RELENT_SIZE)
1717 || dysymtab->locreloff > filesize
1718 || dysymtab->nlocrel > ((filesize - dysymtab->locreloff)
1719 / BFD_MACH_O_RELENT_SIZE))
1720 {
1721 bfd_set_error (bfd_error_file_truncated);
1722 return -1;
1723 }
1724 }
1725 if (dysymtab->nextrel + dysymtab->nlocrel < dysymtab->nextrel
1726 || _bfd_mul_overflow (dysymtab->nextrel + dysymtab->nlocrel,
1727 sizeof (arelent), &amt))
1728 {
1729 bfd_set_error (bfd_error_file_too_big);
1730 return -1;
1731 }
1732
1733 return (dysymtab->nextrel + dysymtab->nlocrel + 1) * sizeof (arelent *);
b32e07d7 1734}
92bc0e80 1735
b32e07d7
TG		 1736long
1737bfd_mach_o_canonicalize_dynamic_reloc (bfd *abfd, arelent **rels,
07d6d2b8 1738 struct bfd_symbol **syms)
b32e07d7
TG		 1739{
1740 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
1741 bfd_mach_o_dysymtab_command *dysymtab = mdata->dysymtab;
1742 bfd_mach_o_backend_data *bed = bfd_mach_o_get_backend_data (abfd);
1743 unsigned long i;
1744 arelent *res;
1745
1746 if (dysymtab == NULL)
1747 return 0;
1748 if (dysymtab->nextrel == 0 && dysymtab->nlocrel == 0)
1749 return 0;
1750
1751 /* No need to go further if we don't know how to read relocs. */
bcb51645 1752 if (bed->_bfd_mach_o_canonicalize_one_reloc == NULL)
b32e07d7
TG		 1753 return 0;
1754
dff55db0 1755 if (mdata->dyn_reloc_cache == NULL)
b32e07d7 1756 {
92376883 1757 size_t amt = (dysymtab->nextrel + dysymtab->nlocrel) * sizeof (arelent);
a4425a57 1758 res = bfd_malloc (amt);
dff55db0 1759 if (res == NULL)
07d6d2b8 1760 return -1;
b32e07d7 1761
dff55db0 1762 if (bfd_mach_o_canonicalize_relocs (abfd, dysymtab->extreloff,
07d6d2b8
AM		 1763 dysymtab->nextrel, res, syms) < 0)
1764 {
1765 free (res);
1766 return -1;
1767 }
dff55db0
TG		 1768
1769 if (bfd_mach_o_canonicalize_relocs (abfd, dysymtab->locreloff,
07d6d2b8
AM		 1770 dysymtab->nlocrel,
1771 res + dysymtab->nextrel, syms) < 0)
1772 {
1773 free (res);
1774 return -1;
1775 }
dff55db0
TG		 1776
1777 mdata->dyn_reloc_cache = res;
b32e07d7
TG		 1778 }
1779
dff55db0 1780 res = mdata->dyn_reloc_cache;
b32e07d7
TG		 1781 for (i = 0; i < dysymtab->nextrel + dysymtab->nlocrel; i++)
1782 rels[i] = &res[i];
1783 rels[i] = NULL;
92bc0e80
TG		 1784 return i;
1785}
1786
19765f52
IS		 1787/* In addition to the need to byte-swap the symbol number, the bit positions
1788 of the fields in the relocation information vary per target endian-ness. */
1789
1790static void
1791bfd_mach_o_swap_out_non_scattered_reloc (bfd *abfd, unsigned char *fields,
c6643fcc 1792 bfd_mach_o_reloc_info *rel)
19765f52
IS		 1793{
1794 unsigned char info = 0;
1795
1796 BFD_ASSERT (rel->r_type <= 15);
1797 BFD_ASSERT (rel->r_length <= 3);
1798
1799 if (bfd_big_endian (abfd))
1800 {
1801 fields[0] = (rel->r_value >> 16) & 0xff;
1802 fields[1] = (rel->r_value >> 8) & 0xff;
1803 fields[2] = rel->r_value & 0xff;
1804 info |= rel->r_type << BFD_MACH_O_BE_TYPE_SHIFT;
1805 info |= rel->r_pcrel ? BFD_MACH_O_BE_PCREL : 0;
1806 info |= rel->r_length << BFD_MACH_O_BE_LENGTH_SHIFT;
1807 info |= rel->r_extern ? BFD_MACH_O_BE_EXTERN : 0;
1808 }
1809 else
1810 {
1811 fields[2] = (rel->r_value >> 16) & 0xff;
1812 fields[1] = (rel->r_value >> 8) & 0xff;
1813 fields[0] = rel->r_value & 0xff;
1814 info |= rel->r_type << BFD_MACH_O_LE_TYPE_SHIFT;
1815 info |= rel->r_pcrel ? BFD_MACH_O_LE_PCREL : 0;
1816 info |= rel->r_length << BFD_MACH_O_LE_LENGTH_SHIFT;
1817 info |= rel->r_extern ? BFD_MACH_O_LE_EXTERN : 0;
1818 }
1819 fields[3] = info;
1820}
1821
0a1b45a2 1822static bool
ab273af8 1823bfd_mach_o_write_relocs (bfd *abfd, bfd_mach_o_section *section)
92bc0e80 1824{
92bc0e80
TG		 1825 unsigned int i;
1826 arelent **entries;
1827 asection *sec;
1828 bfd_mach_o_backend_data *bed = bfd_mach_o_get_backend_data (abfd);
1829
1830 sec = section->bfdsection;
1831 if (sec->reloc_count == 0)
0a1b45a2 1832 return true;
92bc0e80
TG		 1833
1834 if (bed->_bfd_mach_o_swap_reloc_out == NULL)
0a1b45a2 1835 return true;
92bc0e80 1836
92bc0e80 1837 if (bfd_seek (abfd, section->reloff, SEEK_SET) != 0)
0a1b45a2 1838 return false;
92bc0e80
TG		 1839
1840 /* Convert and write. */
1841 entries = section->bfdsection->orelocation;
1842 for (i = 0; i < section->nreloc; i++)
1843 {
1844 arelent *rel = entries[i];
46d1c23b 1845 struct mach_o_reloc_info_external raw;
92bc0e80
TG		 1846 bfd_mach_o_reloc_info info, *pinfo = &info;
1847
1848 /* Convert relocation to an intermediate representation. */
1849 if (!(*bed->_bfd_mach_o_swap_reloc_out) (rel, pinfo))
0a1b45a2 1850 return false;
92bc0e80
TG		 1851
1852 /* Lower the relocation info. */
1853 if (pinfo->r_scattered)
07d6d2b8
AM		 1854 {
1855 unsigned long v;
1856
1857 v = BFD_MACH_O_SR_SCATTERED
1858 | (pinfo->r_pcrel ? BFD_MACH_O_SR_PCREL : 0)
1859 | BFD_MACH_O_SET_SR_LENGTH (pinfo->r_length)
1860 | BFD_MACH_O_SET_SR_TYPE (pinfo->r_type)
1861 | BFD_MACH_O_SET_SR_ADDRESS (pinfo->r_address);
1862 /* Note: scattered relocs have field in reverse order... */
1863 bfd_put_32 (abfd, v, raw.r_address);
1864 bfd_put_32 (abfd, pinfo->r_value, raw.r_symbolnum);
1865 }
92bc0e80 1866 else
07d6d2b8
AM		 1867 {
1868 bfd_put_32 (abfd, pinfo->r_address, raw.r_address);
1869 bfd_mach_o_swap_out_non_scattered_reloc (abfd, raw.r_symbolnum,
19765f52 1870 pinfo);
07d6d2b8 1871 }
92bc0e80 1872
226f9f4f 1873 if (bfd_write (&raw, BFD_MACH_O_RELENT_SIZE, abfd)
07d6d2b8 1874 != BFD_MACH_O_RELENT_SIZE)
0a1b45a2 1875 return false;
92bc0e80 1876 }
0a1b45a2 1877 return true;
92bc0e80
TG		 1878}
1879
0a1b45a2 1880static bool
ab273af8 1881bfd_mach_o_write_section_32 (bfd *abfd, bfd_mach_o_section *section)
116c20d2 1882{
46d1c23b
TG		 1883 struct mach_o_section_32_external raw;
1884
1885 memcpy (raw.sectname, section->sectname, 16);
72b5104c 1886 memcpy (raw.segname, section->segname, 16);
46d1c23b
TG		 1887 bfd_h_put_32 (abfd, section->addr, raw.addr);
1888 bfd_h_put_32 (abfd, section->size, raw.size);
1889 bfd_h_put_32 (abfd, section->offset, raw.offset);
1890 bfd_h_put_32 (abfd, section->align, raw.align);
1891 bfd_h_put_32 (abfd, section->reloff, raw.reloff);
1892 bfd_h_put_32 (abfd, section->nreloc, raw.nreloc);
1893 bfd_h_put_32 (abfd, section->flags, raw.flags);
1894 bfd_h_put_32 (abfd, section->reserved1, raw.reserved1);
1895 bfd_h_put_32 (abfd, section->reserved2, raw.reserved2);
1896
226f9f4f 1897 if (bfd_write (&raw, BFD_MACH_O_SECTION_SIZE, abfd)
92bc0e80 1898 != BFD_MACH_O_SECTION_SIZE)
0a1b45a2 1899 return false;
116c20d2 1900
0a1b45a2 1901 return true;
116c20d2
NC		 1902}
1903
0a1b45a2 1904static bool
ab273af8 1905bfd_mach_o_write_section_64 (bfd *abfd, bfd_mach_o_section *section)
116c20d2 1906{
46d1c23b
TG		 1907 struct mach_o_section_64_external raw;
1908
1909 memcpy (raw.sectname, section->sectname, 16);
1910 memcpy (raw.segname, section->segname, 16);
1911 bfd_h_put_64 (abfd, section->addr, raw.addr);
1912 bfd_h_put_64 (abfd, section->size, raw.size);
1913 bfd_h_put_32 (abfd, section->offset, raw.offset);
1914 bfd_h_put_32 (abfd, section->align, raw.align);
1915 bfd_h_put_32 (abfd, section->reloff, raw.reloff);
1916 bfd_h_put_32 (abfd, section->nreloc, raw.nreloc);
1917 bfd_h_put_32 (abfd, section->flags, raw.flags);
1918 bfd_h_put_32 (abfd, section->reserved1, raw.reserved1);
1919 bfd_h_put_32 (abfd, section->reserved2, raw.reserved2);
1920 bfd_h_put_32 (abfd, section->reserved3, raw.reserved3);
1921
226f9f4f 1922 if (bfd_write (&raw, BFD_MACH_O_SECTION_64_SIZE, abfd)
92bc0e80 1923 != BFD_MACH_O_SECTION_64_SIZE)
0a1b45a2 1924 return false;
116c20d2 1925
0a1b45a2 1926 return true;
1e8a024a
TG		 1927}
1928
0a1b45a2 1929static bool
ab273af8 1930bfd_mach_o_write_segment_32 (bfd *abfd, bfd_mach_o_load_command *command)
1e8a024a 1931{
46d1c23b 1932 struct mach_o_segment_command_32_external raw;
1e8a024a 1933 bfd_mach_o_segment_command *seg = &command->command.segment;
f1bde64c 1934 bfd_mach_o_section *sec;
1e8a024a 1935
c2f09c75
TG		 1936 BFD_ASSERT (command->type == BFD_MACH_O_LC_SEGMENT);
1937
f1bde64c
TG		 1938 for (sec = seg->sect_head; sec != NULL; sec = sec->next)
1939 if (!bfd_mach_o_write_relocs (abfd, sec))
0a1b45a2 1940 return false;
c2f09c75 1941
46d1c23b
TG		 1942 memcpy (raw.segname, seg->segname, 16);
1943 bfd_h_put_32 (abfd, seg->vmaddr, raw.vmaddr);
1944 bfd_h_put_32 (abfd, seg->vmsize, raw.vmsize);
1945 bfd_h_put_32 (abfd, seg->fileoff, raw.fileoff);
1946 bfd_h_put_32 (abfd, seg->filesize, raw.filesize);
1947 bfd_h_put_32 (abfd, seg->maxprot, raw.maxprot);
1948 bfd_h_put_32 (abfd, seg->initprot, raw.initprot);
1949 bfd_h_put_32 (abfd, seg->nsects, raw.nsects);
1950 bfd_h_put_32 (abfd, seg->flags, raw.flags);
68ffbac6 1951
46d1c23b 1952 if (bfd_seek (abfd, command->offset + BFD_MACH_O_LC_SIZE, SEEK_SET) != 0
226f9f4f 1953 || bfd_write (&raw, sizeof (raw), abfd) != sizeof (raw))
0a1b45a2 1954 return false;
1e8a024a 1955
f1bde64c 1956 for (sec = seg->sect_head; sec != NULL; sec = sec->next)
452216ab 1957 if (!bfd_mach_o_write_section_32 (abfd, sec))
0a1b45a2 1958 return false;
1e8a024a 1959
0a1b45a2 1960 return true;
116c20d2
NC		 1961}
1962
0a1b45a2 1963static bool
ab273af8 1964bfd_mach_o_write_segment_64 (bfd *abfd, bfd_mach_o_load_command *command)
1e8a024a 1965{
46d1c23b 1966 struct mach_o_segment_command_64_external raw;
c2f09c75 1967 bfd_mach_o_segment_command *seg = &command->command.segment;
f1bde64c 1968 bfd_mach_o_section *sec;
c2f09c75
TG		 1969
1970 BFD_ASSERT (command->type == BFD_MACH_O_LC_SEGMENT_64);
1971
f1bde64c
TG		 1972 for (sec = seg->sect_head; sec != NULL; sec = sec->next)
1973 if (!bfd_mach_o_write_relocs (abfd, sec))
0a1b45a2 1974 return false;
c2f09c75 1975
46d1c23b
TG		 1976 memcpy (raw.segname, seg->segname, 16);
1977 bfd_h_put_64 (abfd, seg->vmaddr, raw.vmaddr);
1978 bfd_h_put_64 (abfd, seg->vmsize, raw.vmsize);
1979 bfd_h_put_64 (abfd, seg->fileoff, raw.fileoff);
1980 bfd_h_put_64 (abfd, seg->filesize, raw.filesize);
1981 bfd_h_put_32 (abfd, seg->maxprot, raw.maxprot);
1982 bfd_h_put_32 (abfd, seg->initprot, raw.initprot);
1983 bfd_h_put_32 (abfd, seg->nsects, raw.nsects);
1984 bfd_h_put_32 (abfd, seg->flags, raw.flags);
1985
1986 if (bfd_seek (abfd, command->offset + BFD_MACH_O_LC_SIZE, SEEK_SET) != 0
226f9f4f 1987 || bfd_write (&raw, sizeof (raw), abfd) != sizeof (raw))
0a1b45a2 1988 return false;
c2f09c75 1989
f1bde64c 1990 for (sec = seg->sect_head; sec != NULL; sec = sec->next)
452216ab 1991 if (!bfd_mach_o_write_section_64 (abfd, sec))
0a1b45a2 1992 return false;
c2f09c75 1993
0a1b45a2 1994 return true;
1e8a024a
TG		 1995}
1996
0a1b45a2 1997static bool
c9ffd2ea 1998bfd_mach_o_write_symtab_content (bfd *abfd, bfd_mach_o_symtab_command *sym)
116c20d2 1999{
046b007d 2000 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
116c20d2 2001 unsigned long i;
c2f09c75 2002 unsigned int wide = bfd_mach_o_wide_p (abfd);
c2f09c75
TG		 2003 struct bfd_strtab_hash *strtab;
2004 asymbol **symbols = bfd_get_outsymbols (abfd);
c9ffd2ea 2005 int padlen;
c2f09c75
TG		 2006
2007 /* Write the symbols first. */
2008 if (bfd_seek (abfd, sym->symoff, SEEK_SET) != 0)
0a1b45a2 2009 return false;
c2f09c75 2010
c2f09c75
TG		 2011 strtab = _bfd_stringtab_init ();
2012 if (strtab == NULL)
0a1b45a2 2013 return false;
116c20d2 2014
a4551119
TG		 2015 if (sym->nsyms > 0)
2016 /* Although we don't strictly need to do this, for compatibility with
2017 Darwin system tools, actually output an empty string for the index
2018 0 entry. */
0a1b45a2 2019 _bfd_stringtab_add (strtab, "", true, false);
a4551119 2020
116c20d2
NC		 2021 for (i = 0; i < sym->nsyms; i++)
2022 {
91d6fa6a 2023 bfd_size_type str_index;
92bc0e80 2024 bfd_mach_o_asymbol *s = (bfd_mach_o_asymbol *)symbols[i];
68ffbac6 2025
92bc0e80 2026 if (s->symbol.name == 0 || s->symbol.name[0] == '\0')
7f307238 2027 /* An index of 0 always means the empty string. */
07d6d2b8 2028 str_index = 0;
c2f09c75 2029 else
07d6d2b8 2030 {
0a1b45a2 2031 str_index = _bfd_stringtab_add (strtab, s->symbol.name, true, false);
7f307238 2032
07d6d2b8
AM		 2033 if (str_index == (bfd_size_type) -1)
2034 goto err;
2035 }
46d1c23b 2036
c2f09c75 2037 if (wide)
07d6d2b8
AM		 2038 {
2039 struct mach_o_nlist_64_external raw;
2040
2041 bfd_h_put_32 (abfd, str_index, raw.n_strx);
2042 bfd_h_put_8 (abfd, s->n_type, raw.n_type);
2043 bfd_h_put_8 (abfd, s->n_sect, raw.n_sect);
2044 bfd_h_put_16 (abfd, s->n_desc, raw.n_desc);
2045 bfd_h_put_64 (abfd, s->symbol.section->vma + s->symbol.value,
2046 raw.n_value);
2047
226f9f4f 2048 if (bfd_write (&raw, sizeof (raw), abfd) != sizeof (raw))
07d6d2b8
AM		 2049 goto err;
2050 }
c2f09c75 2051 else
07d6d2b8
AM		 2052 {
2053 struct mach_o_nlist_external raw;
116c20d2 2054
07d6d2b8
AM		 2055 bfd_h_put_32 (abfd, str_index, raw.n_strx);
2056 bfd_h_put_8 (abfd, s->n_type, raw.n_type);
2057 bfd_h_put_8 (abfd, s->n_sect, raw.n_sect);
2058 bfd_h_put_16 (abfd, s->n_desc, raw.n_desc);
2059 bfd_h_put_32 (abfd, s->symbol.section->vma + s->symbol.value,
2060 raw.n_value);
46d1c23b 2061
226f9f4f 2062 if (bfd_write (&raw, sizeof (raw), abfd) != sizeof (raw))
07d6d2b8
AM		 2063 goto err;
2064 }
116c20d2 2065 }
c2f09c75 2066 sym->strsize = _bfd_stringtab_size (strtab);
92bc0e80
TG		 2067 sym->stroff = mdata->filelen;
2068 mdata->filelen += sym->strsize;
116c20d2 2069
c9ffd2ea 2070 if (bfd_seek (abfd, sym->stroff, SEEK_SET) != 0)
64d29018 2071 goto err;
c9ffd2ea 2072
535b785f 2073 if (!_bfd_stringtab_emit (abfd, strtab))
c2f09c75 2074 goto err;
116c20d2 2075
9a925d0d
AM		 2076 _bfd_stringtab_free (strtab);
2077
c9ffd2ea
TG		 2078 /* Pad string table. */
2079 padlen = bfd_mach_o_pad4 (abfd, sym->strsize);
2080 if (padlen < 0)
0a1b45a2 2081 return false;
c9ffd2ea
TG		 2082 mdata->filelen += padlen;
2083 sym->strsize += padlen;
116c20d2 2084
0a1b45a2 2085 return true;
116c20d2 2086
c2f09c75
TG		 2087 err:
2088 _bfd_stringtab_free (strtab);
64d29018 2089 sym->strsize = 0;
0a1b45a2 2090 return false;
116c20d2
NC		 2091}
2092
0a1b45a2 2093static bool
c9ffd2ea
TG		 2094bfd_mach_o_write_symtab (bfd *abfd, bfd_mach_o_load_command *command)
2095{
2096 bfd_mach_o_symtab_command *sym = &command->command.symtab;
2097 struct mach_o_symtab_command_external raw;
2098
2099 BFD_ASSERT (command->type == BFD_MACH_O_LC_SYMTAB);
2100
2101 /* The command. */
2102 bfd_h_put_32 (abfd, sym->symoff, raw.symoff);
2103 bfd_h_put_32 (abfd, sym->nsyms, raw.nsyms);
2104 bfd_h_put_32 (abfd, sym->stroff, raw.stroff);
2105 bfd_h_put_32 (abfd, sym->strsize, raw.strsize);
2106
2107 if (bfd_seek (abfd, command->offset + BFD_MACH_O_LC_SIZE, SEEK_SET) != 0
226f9f4f 2108 || bfd_write (&raw, sizeof (raw), abfd) != sizeof (raw))
0a1b45a2 2109 return false;
c9ffd2ea 2110
0a1b45a2 2111 return true;
c9ffd2ea
TG		 2112}
2113
2114/* Count the number of indirect symbols in the image.
2115 Requires that the sections are in their final order. */
2116
2117static unsigned int
2118bfd_mach_o_count_indirect_symbols (bfd *abfd, bfd_mach_o_data_struct *mdata)
2119{
2120 unsigned int i;
2121 unsigned int nisyms = 0;
2122
2123 for (i = 0; i < mdata->nsects; ++i)
2124 {
2125 bfd_mach_o_section *sec = mdata->sections[i];
2126
2127 switch (sec->flags & BFD_MACH_O_SECTION_TYPE_MASK)
2128 {
2129 case BFD_MACH_O_S_NON_LAZY_SYMBOL_POINTERS:
2130 case BFD_MACH_O_S_LAZY_SYMBOL_POINTERS:
2131 case BFD_MACH_O_S_SYMBOL_STUBS:
2132 nisyms += bfd_mach_o_section_get_nbr_indirect (abfd, sec);
2133 break;
2134 default:
2135 break;
2136 }
2137 }
2138 return nisyms;
2139}
2140
2141/* Create the dysymtab. */
2142
0a1b45a2 2143static bool
c9ffd2ea
TG		 2144bfd_mach_o_build_dysymtab (bfd *abfd, bfd_mach_o_dysymtab_command *cmd)
2145{
2146 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
2147
2148 /* TODO:
2149 We are not going to try and fill these in yet and, moreover, we are
2150 going to bail if they are already set. */
2151 if (cmd->nmodtab != 0
2152 || cmd->ntoc != 0
2153 || cmd->nextrefsyms != 0)
2154 {
4eca0228
AM		 2155 _bfd_error_handler (_("sorry: modtab, toc and extrefsyms are not yet"
2156 " implemented for dysymtab commands."));
0a1b45a2 2157 return false;
c9ffd2ea
TG		 2158 }
2159
2160 cmd->ilocalsym = 0;
2161
2162 if (bfd_get_symcount (abfd) > 0)
2163 {
2164 asymbol **symbols = bfd_get_outsymbols (abfd);
2165 unsigned long i;
2166
2167 /* Count the number of each kind of symbol. */
2168 for (i = 0; i < bfd_get_symcount (abfd); ++i)
2169 {
2170 bfd_mach_o_asymbol *s = (bfd_mach_o_asymbol *)symbols[i];
2171 if (s->n_type & (BFD_MACH_O_N_EXT | BFD_MACH_O_N_PEXT))
2172 break;
2173 }
2174 cmd->nlocalsym = i;
2175 cmd->iextdefsym = i;
2176 for (; i < bfd_get_symcount (abfd); ++i)
2177 {
2178 bfd_mach_o_asymbol *s = (bfd_mach_o_asymbol *)symbols[i];
2179 if ((s->n_type & BFD_MACH_O_N_TYPE) == BFD_MACH_O_N_UNDF)
2180 break;
2181 }
2182 cmd->nextdefsym = i - cmd->nlocalsym;
2183 cmd->iundefsym = cmd->nextdefsym + cmd->iextdefsym;
2184 cmd->nundefsym = bfd_get_symcount (abfd)
2185 - cmd->nlocalsym
2186 - cmd->nextdefsym;
2187 }
2188 else
2189 {
2190 cmd->nlocalsym = 0;
2191 cmd->iextdefsym = 0;
2192 cmd->nextdefsym = 0;
2193 cmd->iundefsym = 0;
2194 cmd->nundefsym = 0;
2195 }
2196
2197 cmd->nindirectsyms = bfd_mach_o_count_indirect_symbols (abfd, mdata);
2198 if (cmd->nindirectsyms > 0)
2199 {
2200 unsigned i;
2201 unsigned n;
a4425a57 2202 size_t amt;
c9ffd2ea
TG		 2203
2204 mdata->filelen = FILE_ALIGN (mdata->filelen, 2);
2205 cmd->indirectsymoff = mdata->filelen;
a4425a57 2206 if (_bfd_mul_overflow (cmd->nindirectsyms, 4, &amt))
0a1b45a2 2207 return false;
a4425a57
AM		 2208 mdata->filelen += amt;
2209
2210 cmd->indirect_syms = bfd_zalloc (abfd, amt);
c9ffd2ea 2211 if (cmd->indirect_syms == NULL)
0a1b45a2 2212 return false;
c9ffd2ea
TG		 2213
2214 n = 0;
2215 for (i = 0; i < mdata->nsects; ++i)
2216 {
2217 bfd_mach_o_section *sec = mdata->sections[i];
2218
2219 switch (sec->flags & BFD_MACH_O_SECTION_TYPE_MASK)
2220 {
2221 case BFD_MACH_O_S_NON_LAZY_SYMBOL_POINTERS:
2222 case BFD_MACH_O_S_LAZY_SYMBOL_POINTERS:
2223 case BFD_MACH_O_S_SYMBOL_STUBS:
2224 {
2225 unsigned j, num;
2226 bfd_mach_o_asymbol **isyms = sec->indirect_syms;
2227
2228 num = bfd_mach_o_section_get_nbr_indirect (abfd, sec);
2229 if (isyms == NULL || num == 0)
2230 break;
2231 /* Record the starting index in the reserved1 field. */
2232 sec->reserved1 = n;
2233 for (j = 0; j < num; j++, n++)
2234 {
2235 if (isyms[j] == NULL)
07d6d2b8 2236 cmd->indirect_syms[n] = BFD_MACH_O_INDIRECT_SYM_LOCAL;
c9ffd2ea
TG		 2237 else if (isyms[j]->symbol.section == bfd_abs_section_ptr
2238 && ! (isyms[j]->n_type & BFD_MACH_O_N_EXT))
07d6d2b8 2239 cmd->indirect_syms[n] = BFD_MACH_O_INDIRECT_SYM_LOCAL
c9ffd2ea
TG		 2240 | BFD_MACH_O_INDIRECT_SYM_ABS;
2241 else
07d6d2b8 2242 cmd->indirect_syms[n] = isyms[j]->symbol.udata.i;
c9ffd2ea
TG		 2243 }
2244 }
2245 break;
2246 default:
2247 break;
2248 }
2249 }
2250 }
2251
0a1b45a2 2252 return true;
c9ffd2ea
TG		 2253}
2254
7f307238
IS		 2255/* Write a dysymtab command.
2256 TODO: Possibly coalesce writes of smaller objects. */
2257
0a1b45a2 2258static bool
7f307238
IS		 2259bfd_mach_o_write_dysymtab (bfd *abfd, bfd_mach_o_load_command *command)
2260{
2261 bfd_mach_o_dysymtab_command *cmd = &command->command.dysymtab;
2262
2263 BFD_ASSERT (command->type == BFD_MACH_O_LC_DYSYMTAB);
2264
2265 if (cmd->nmodtab != 0)
2266 {
2267 unsigned int i;
2268
2269 if (bfd_seek (abfd, cmd->modtaboff, SEEK_SET) != 0)
0a1b45a2 2270 return false;
7f307238
IS		 2271
2272 for (i = 0; i < cmd->nmodtab; i++)
2273 {
2274 bfd_mach_o_dylib_module *module = &cmd->dylib_module[i];
2275 unsigned int iinit;
2276 unsigned int ninit;
2277
2278 iinit = module->iinit & 0xffff;
2279 iinit |= ((module->iterm & 0xffff) << 16);
2280
2281 ninit = module->ninit & 0xffff;
2282 ninit |= ((module->nterm & 0xffff) << 16);
2283
2284 if (bfd_mach_o_wide_p (abfd))
2285 {
2286 struct mach_o_dylib_module_64_external w;
2287
2288 bfd_h_put_32 (abfd, module->module_name_idx, &w.module_name);
2289 bfd_h_put_32 (abfd, module->iextdefsym, &w.iextdefsym);
2290 bfd_h_put_32 (abfd, module->nextdefsym, &w.nextdefsym);
2291 bfd_h_put_32 (abfd, module->irefsym, &w.irefsym);
2292 bfd_h_put_32 (abfd, module->nrefsym, &w.nrefsym);
2293 bfd_h_put_32 (abfd, module->ilocalsym, &w.ilocalsym);
2294 bfd_h_put_32 (abfd, module->nlocalsym, &w.nlocalsym);
2295 bfd_h_put_32 (abfd, module->iextrel, &w.iextrel);
2296 bfd_h_put_32 (abfd, module->nextrel, &w.nextrel);
2297 bfd_h_put_32 (abfd, iinit, &w.iinit_iterm);
2298 bfd_h_put_32 (abfd, ninit, &w.ninit_nterm);
2299 bfd_h_put_64 (abfd, module->objc_module_info_addr,
2300 &w.objc_module_info_addr);
2301 bfd_h_put_32 (abfd, module->objc_module_info_size,
2302 &w.objc_module_info_size);
2303
226f9f4f 2304 if (bfd_write (&w, sizeof (w), abfd) != sizeof (w))
0a1b45a2 2305 return false;
7f307238
IS		 2306 }
2307 else
2308 {
2309 struct mach_o_dylib_module_external n;
2310
2311 bfd_h_put_32 (abfd, module->module_name_idx, &n.module_name);
2312 bfd_h_put_32 (abfd, module->iextdefsym, &n.iextdefsym);
2313 bfd_h_put_32 (abfd, module->nextdefsym, &n.nextdefsym);
2314 bfd_h_put_32 (abfd, module->irefsym, &n.irefsym);
2315 bfd_h_put_32 (abfd, module->nrefsym, &n.nrefsym);
2316 bfd_h_put_32 (abfd, module->ilocalsym, &n.ilocalsym);
2317 bfd_h_put_32 (abfd, module->nlocalsym, &n.nlocalsym);
2318 bfd_h_put_32 (abfd, module->iextrel, &n.iextrel);
2319 bfd_h_put_32 (abfd, module->nextrel, &n.nextrel);
2320 bfd_h_put_32 (abfd, iinit, &n.iinit_iterm);
2321 bfd_h_put_32 (abfd, ninit, &n.ninit_nterm);
2322 bfd_h_put_32 (abfd, module->objc_module_info_addr,
2323 &n.objc_module_info_addr);
2324 bfd_h_put_32 (abfd, module->objc_module_info_size,
2325 &n.objc_module_info_size);
2326
226f9f4f 2327 if (bfd_write (&n, sizeof (n), abfd) != sizeof (n))
0a1b45a2 2328 return false;
7f307238
IS		 2329 }
2330 }
2331 }
2332
2333 if (cmd->ntoc != 0)
2334 {
2335 unsigned int i;
2336
2337 if (bfd_seek (abfd, cmd->tocoff, SEEK_SET) != 0)
0a1b45a2 2338 return false;
7f307238
IS		 2339
2340 for (i = 0; i < cmd->ntoc; i++)
2341 {
2342 struct mach_o_dylib_table_of_contents_external raw;
2343 bfd_mach_o_dylib_table_of_content *toc = &cmd->dylib_toc[i];
2344
2345 bfd_h_put_32 (abfd, toc->symbol_index, &raw.symbol_index);
2346 bfd_h_put_32 (abfd, toc->module_index, &raw.module_index);
2347
226f9f4f 2348 if (bfd_write (&raw, sizeof (raw), abfd) != sizeof (raw))
0a1b45a2 2349 return false;
7f307238
IS		 2350 }
2351 }
68ffbac6 2352
7f307238
IS		 2353 if (cmd->nindirectsyms > 0)
2354 {
2355 unsigned int i;
2356
2357 if (bfd_seek (abfd, cmd->indirectsymoff, SEEK_SET) != 0)
0a1b45a2 2358 return false;
7f307238
IS		 2359
2360 for (i = 0; i < cmd->nindirectsyms; ++i)
2361 {
2362 unsigned char raw[4];
2363
2364 bfd_h_put_32 (abfd, cmd->indirect_syms[i], &raw);
226f9f4f 2365 if (bfd_write (raw, sizeof (raw), abfd) != sizeof (raw))
0a1b45a2 2366 return false;
68ffbac6 2367 }
7f307238
IS		 2368 }
2369
2370 if (cmd->nextrefsyms != 0)
2371 {
2372 unsigned int i;
2373
2374 if (bfd_seek (abfd, cmd->extrefsymoff, SEEK_SET) != 0)
0a1b45a2 2375 return false;
7f307238
IS		 2376
2377 for (i = 0; i < cmd->nextrefsyms; i++)
2378 {
2379 unsigned long v;
2380 unsigned char raw[4];
2381 bfd_mach_o_dylib_reference *ref = &cmd->ext_refs[i];
2382
2383 /* Fields isym and flags are written as bit-fields, thus we need
2384 a specific processing for endianness. */
2385
2386 if (bfd_big_endian (abfd))
2387 {
2388 v = ((ref->isym & 0xffffff) << 8);
2389 v |= ref->flags & 0xff;
2390 }
2391 else
2392 {
2393 v = ref->isym & 0xffffff;
2394 v |= ((ref->flags & 0xff) << 24);
2395 }
2396
2397 bfd_h_put_32 (abfd, v, raw);
226f9f4f 2398 if (bfd_write (raw, sizeof (raw), abfd) != sizeof (raw))
0a1b45a2 2399 return false;
7f307238
IS		 2400 }
2401 }
2402
2403 /* The command. */
2404 if (bfd_seek (abfd, command->offset + BFD_MACH_O_LC_SIZE, SEEK_SET) != 0)
0a1b45a2 2405 return false;
7f307238
IS		 2406 else
2407 {
2408 struct mach_o_dysymtab_command_external raw;
2409
2410 bfd_h_put_32 (abfd, cmd->ilocalsym, &raw.ilocalsym);
2411 bfd_h_put_32 (abfd, cmd->nlocalsym, &raw.nlocalsym);
2412 bfd_h_put_32 (abfd, cmd->iextdefsym, &raw.iextdefsym);
2413 bfd_h_put_32 (abfd, cmd->nextdefsym, &raw.nextdefsym);
2414 bfd_h_put_32 (abfd, cmd->iundefsym, &raw.iundefsym);
2415 bfd_h_put_32 (abfd, cmd->nundefsym, &raw.nundefsym);
2416 bfd_h_put_32 (abfd, cmd->tocoff, &raw.tocoff);
2417 bfd_h_put_32 (abfd, cmd->ntoc, &raw.ntoc);
2418 bfd_h_put_32 (abfd, cmd->modtaboff, &raw.modtaboff);
2419 bfd_h_put_32 (abfd, cmd->nmodtab, &raw.nmodtab);
2420 bfd_h_put_32 (abfd, cmd->extrefsymoff, &raw.extrefsymoff);
2421 bfd_h_put_32 (abfd, cmd->nextrefsyms, &raw.nextrefsyms);
2422 bfd_h_put_32 (abfd, cmd->indirectsymoff, &raw.indirectsymoff);
2423 bfd_h_put_32 (abfd, cmd->nindirectsyms, &raw.nindirectsyms);
2424 bfd_h_put_32 (abfd, cmd->extreloff, &raw.extreloff);
2425 bfd_h_put_32 (abfd, cmd->nextrel, &raw.nextrel);
2426 bfd_h_put_32 (abfd, cmd->locreloff, &raw.locreloff);
2427 bfd_h_put_32 (abfd, cmd->nlocrel, &raw.nlocrel);
2428
226f9f4f 2429 if (bfd_write (&raw, sizeof (raw), abfd) != sizeof (raw))
0a1b45a2 2430 return false;
7f307238
IS		 2431 }
2432
0a1b45a2 2433 return true;
7f307238
IS		 2434}
2435
2436static unsigned
b22161d6 2437bfd_mach_o_primary_symbol_sort_key (bfd_mach_o_asymbol *s)
7f307238 2438{
b22161d6 2439 unsigned mtyp = s->n_type & BFD_MACH_O_N_TYPE;
68588f95
IS		 2440
2441 /* Just leave debug symbols where they are (pretend they are local, and
2442 then they will just be sorted on position). */
b22161d6 2443 if (s->n_type & BFD_MACH_O_N_STAB)
68588f95
IS		 2444 return 0;
2445
7f307238 2446 /* Local (we should never see an undefined local AFAICT). */
b22161d6 2447 if (! (s->n_type & (BFD_MACH_O_N_EXT | BFD_MACH_O_N_PEXT)))
7f307238
IS		 2448 return 0;
2449
2450 /* Common symbols look like undefined externs. */
68588f95 2451 if (mtyp == BFD_MACH_O_N_UNDF)
7f307238
IS		 2452 return 2;
2453
b22161d6 2454 /* A defined non-local, non-debug symbol. */
7f307238
IS		 2455 return 1;
2456}
2457
2458static int
2459bfd_mach_o_cf_symbols (const void *a, const void *b)
2460{
2461 bfd_mach_o_asymbol *sa = *(bfd_mach_o_asymbol **) a;
2462 bfd_mach_o_asymbol *sb = *(bfd_mach_o_asymbol **) b;
2463 unsigned int soa, sob;
2464
b22161d6
IS		 2465 soa = bfd_mach_o_primary_symbol_sort_key (sa);
2466 sob = bfd_mach_o_primary_symbol_sort_key (sb);
7f307238
IS		 2467 if (soa < sob)
2468 return -1;
2469
2470 if (soa > sob)
2471 return 1;
2472
68588f95 2473 /* If it's local or stab, just preserve the input order. */
7f307238
IS		 2474 if (soa == 0)
2475 {
2476 if (sa->symbol.udata.i < sb->symbol.udata.i)
07d6d2b8 2477 return -1;
7f307238 2478 if (sa->symbol.udata.i > sb->symbol.udata.i)
07d6d2b8 2479 return 1;
b22161d6
IS		 2480
2481 /* This is probably an error. */
7f307238
IS		 2482 return 0;
2483 }
2484
b22161d6
IS		 2485 /* The second sort key is name. */
2486 return strcmp (sa->symbol.name, sb->symbol.name);
7f307238
IS		 2487}
2488
2489/* Process the symbols.
2490
2491 This should be OK for single-module files - but it is not likely to work
2492 for multi-module shared libraries.
2493
2494 (a) If the application has not filled in the relevant mach-o fields, make
2495 an estimate.
2496
2497 (b) Order them, like this:
2498 ( i) local.
2499 (unsorted)
2500 ( ii) external defined
2501 (by name)
b22161d6 2502 (iii) external undefined/common
7f307238
IS		 2503 (by name)
2504 ( iv) common
2505 (by name)
b22161d6 2506*/
92bc0e80 2507
0a1b45a2 2508static bool
b22161d6 2509bfd_mach_o_mangle_symbols (bfd *abfd)
92bc0e80
TG		 2510{
2511 unsigned long i;
2512 asymbol **symbols = bfd_get_outsymbols (abfd);
2513
7f307238 2514 if (symbols == NULL || bfd_get_symcount (abfd) == 0)
0a1b45a2 2515 return true;
7f307238 2516
92bc0e80
TG		 2517 for (i = 0; i < bfd_get_symcount (abfd); i++)
2518 {
2519 bfd_mach_o_asymbol *s = (bfd_mach_o_asymbol *)symbols[i];
2520
b22161d6
IS		 2521 /* We use this value, which is out-of-range as a symbol index, to signal
2522 that the mach-o-specific data are not filled in and need to be created
2523 from the bfd values. It is much preferable for the application to do
2524 this, since more meaningful diagnostics can be made that way. */
2525
2526 if (s->symbol.udata.i == SYM_MACHO_FIELDS_UNSET)
07d6d2b8
AM		 2527 {
2528 /* No symbol information has been set - therefore determine
2529 it from the bfd symbol flags/info. */
2530 if (s->symbol.section == bfd_abs_section_ptr)
2531 s->n_type = BFD_MACH_O_N_ABS;
2532 else if (s->symbol.section == bfd_und_section_ptr)
2533 {
2534 s->n_type = BFD_MACH_O_N_UNDF;
2535 if (s->symbol.flags & BSF_WEAK)
2536 s->n_desc |= BFD_MACH_O_N_WEAK_REF;
2537 /* mach-o automatically makes undefined symbols extern. */
7f307238 2538 s->n_type |= BFD_MACH_O_N_EXT;
b22161d6 2539 s->symbol.flags |= BSF_GLOBAL;
07d6d2b8
AM		 2540 }
2541 else if (s->symbol.section == bfd_com_section_ptr)
b22161d6 2542 {
07d6d2b8
AM		 2543 s->n_type = BFD_MACH_O_N_UNDF | BFD_MACH_O_N_EXT;
2544 s->symbol.flags |= BSF_GLOBAL;
2545 }
2546 else
2547 s->n_type = BFD_MACH_O_N_SECT;
07d6d2b8 2548 }
92bc0e80 2549
ae19acf3 2550 /* Update external symbol bit in case objcopy changed it. */
2551 if (s->symbol.flags & BSF_GLOBAL)
2552 s->n_type |= BFD_MACH_O_N_EXT;
2553 else
2554 s->n_type &= ~BFD_MACH_O_N_EXT;
2555
7f307238 2556 /* Put the section index in, where required. */
68588f95 2557 if ((s->symbol.section != bfd_abs_section_ptr
07d6d2b8
AM		 2558 && s->symbol.section != bfd_und_section_ptr
2559 && s->symbol.section != bfd_com_section_ptr)
2560 || ((s->n_type & BFD_MACH_O_N_STAB) != 0
2561 && s->symbol.name == NULL))
707e555b 2562 s->n_sect = s->symbol.section->output_section->target_index;
92bc0e80 2563
b22161d6
IS		 2564 /* Number to preserve order for local and debug syms. */
2565 s->symbol.udata.i = i;
7f307238
IS		 2566 }
2567
b22161d6
IS		 2568 /* Sort the symbols. */
2569 qsort ((void *) symbols, (size_t) bfd_get_symcount (abfd),
2570 sizeof (asymbol *), bfd_mach_o_cf_symbols);
7f307238 2571
b22161d6
IS		 2572 for (i = 0; i < bfd_get_symcount (abfd); ++i)
2573 {
2574 bfd_mach_o_asymbol *s = (bfd_mach_o_asymbol *)symbols[i];
2575 s->symbol.udata.i = i; /* renumber. */
7f307238
IS		 2576 }
2577
0a1b45a2 2578 return true;
7f307238
IS		 2579}
2580
2581/* We build a flat table of sections, which can be re-ordered if necessary.
2582 Fill in the section number and other mach-o-specific data. */
2583
0a1b45a2 2584static bool
7f307238
IS		 2585bfd_mach_o_mangle_sections (bfd *abfd, bfd_mach_o_data_struct *mdata)
2586{
2587 asection *sec;
2588 unsigned target_index;
2589 unsigned nsect;
1f4361a7 2590 size_t amt;
7f307238
IS		 2591
2592 nsect = bfd_count_sections (abfd);
68ffbac6 2593
7f307238
IS		 2594 /* Don't do it if it's already set - assume the application knows what it's
2595 doing. */
2596 if (mdata->nsects == nsect
2597 && (mdata->nsects == 0 || mdata->sections != NULL))
0a1b45a2 2598 return true;
7f307238 2599
a1165289
NC		 2600 /* We need to check that this can be done... */
2601 if (nsect > 255)
2602 {
4eca0228
AM		 2603 _bfd_error_handler (_("mach-o: there are too many sections (%u)"
2604 " maximum is 255,\n"), nsect);
0a1b45a2 2605 return false;
a1165289
NC		 2606 }
2607
7f307238 2608 mdata->nsects = nsect;
a4425a57 2609 amt = mdata->nsects * sizeof (bfd_mach_o_section *);
1f4361a7 2610 mdata->sections = bfd_alloc (abfd, amt);
7f307238 2611 if (mdata->sections == NULL)
0a1b45a2 2612 return false;
7f307238 2613
7f307238 2614 /* Create Mach-O sections.
68ffbac6 2615 Section type, attribute and align should have been set when the
7f307238
IS		 2616 section was created - either read in or specified. */
2617 target_index = 0;
2618 for (sec = abfd->sections; sec; sec = sec->next)
2619 {
fd361982 2620 unsigned bfd_align = bfd_section_alignment (sec);
7f307238
IS		 2621 bfd_mach_o_section *msect = bfd_mach_o_get_mach_o_section (sec);
2622
2623 mdata->sections[target_index] = msect;
2624
fd361982
AM		 2625 msect->addr = bfd_section_vma (sec);
2626 msect->size = bfd_section_size (sec);
7f307238 2627
68ffbac6 2628 /* Use the largest alignment set, in case it was bumped after the
7f307238
IS		 2629 section was created. */
2630 msect->align = msect->align > bfd_align ? msect->align : bfd_align;
2631
2632 msect->offset = 0;
2633 sec->target_index = ++target_index;
92bc0e80 2634 }
7f307238 2635
0a1b45a2 2636 return true;
92bc0e80
TG		 2637}
2638
0a1b45a2 2639bool
116c20d2 2640bfd_mach_o_write_contents (bfd *abfd)
3af9a47b 2641{
046b007d 2642 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
c9ffd2ea
TG		 2643 bfd_mach_o_load_command *cmd;
2644 bfd_mach_o_symtab_command *symtab = NULL;
2645 bfd_mach_o_dysymtab_command *dysymtab = NULL;
2646 bfd_mach_o_segment_command *linkedit = NULL;
3af9a47b 2647
7f307238 2648 /* Make the commands, if not already present. */
c9ffd2ea 2649 if (!abfd->output_has_begun && !bfd_mach_o_build_commands (abfd))
0a1b45a2
AM		 2650 return false;
2651 abfd->output_has_begun = true;
92bc0e80 2652
c9ffd2ea 2653 /* Write the header. */
154a1ee5 2654 if (!bfd_mach_o_write_header (abfd, &mdata->header))
0a1b45a2 2655 return false;
3af9a47b 2656
c9ffd2ea
TG		 2657 /* First pass: allocate the linkedit segment. */
2658 for (cmd = mdata->first_command; cmd != NULL; cmd = cmd->next)
2659 switch (cmd->type)
2660 {
2661 case BFD_MACH_O_LC_SEGMENT_64:
2662 case BFD_MACH_O_LC_SEGMENT:
2663 if (strcmp (cmd->command.segment.segname, "__LINKEDIT") == 0)
2664 linkedit = &cmd->command.segment;
2665 break;
2666 case BFD_MACH_O_LC_SYMTAB:
2667 symtab = &cmd->command.symtab;
2668 break;
2669 case BFD_MACH_O_LC_DYSYMTAB:
2670 dysymtab = &cmd->command.dysymtab;
2671 break;
2672 case BFD_MACH_O_LC_DYLD_INFO:
2673 {
2674 bfd_mach_o_dyld_info_command *di = &cmd->command.dyld_info;
2675
21aacea4
AM		 2676 di->rebase_off = di->rebase_size != 0 ? mdata->filelen : 0;
2677 mdata->filelen += di->rebase_size;
2678 di->bind_off = di->bind_size != 0 ? mdata->filelen : 0;
2679 mdata->filelen += di->bind_size;
2680 di->weak_bind_off = di->weak_bind_size != 0 ? mdata->filelen : 0;
2681 mdata->filelen += di->weak_bind_size;
2682 di->lazy_bind_off = di->lazy_bind_size != 0 ? mdata->filelen : 0;
2683 mdata->filelen += di->lazy_bind_size;
2684 di->export_off = di->export_size != 0 ? mdata->filelen : 0;
2685 mdata->filelen += di->export_size;
c9ffd2ea
TG		 2686 }
2687 break;
2688 case BFD_MACH_O_LC_LOAD_DYLIB:
2689 case BFD_MACH_O_LC_LOAD_DYLINKER:
2690 case BFD_MACH_O_LC_MAIN:
2691 /* Nothing to do. */
2692 break;
2693 default:
4eca0228 2694 _bfd_error_handler
d42c267e
AM		 2695 (_("unable to allocate data for load command %#x"),
2696 cmd->type);
c9ffd2ea
TG		 2697 break;
2698 }
2699
2700 /* Specially handle symtab and dysymtab. */
2701
2702 /* Pre-allocate the symbol table (but not the string table). The reason
2703 is that the dysymtab is after the symbol table but before the string
2704 table (required by the native strip tool). */
2705 if (symtab != NULL)
2706 {
2707 unsigned int symlen;
2708 unsigned int wide = bfd_mach_o_wide_p (abfd);
2709
2710 symlen = wide ? BFD_MACH_O_NLIST_64_SIZE : BFD_MACH_O_NLIST_SIZE;
2711
2712 /* Align for symbols. */
2713 mdata->filelen = FILE_ALIGN (mdata->filelen, wide ? 3 : 2);
2714 symtab->symoff = mdata->filelen;
2715
2716 symtab->nsyms = bfd_get_symcount (abfd);
2717 mdata->filelen += symtab->nsyms * symlen;
2718 }
2719
2720 /* Build the dysymtab. */
2721 if (dysymtab != NULL)
2722 if (!bfd_mach_o_build_dysymtab (abfd, dysymtab))
0a1b45a2 2723 return false;
c9ffd2ea
TG		 2724
2725 /* Write symtab and strtab. */
2726 if (symtab != NULL)
2727 if (!bfd_mach_o_write_symtab_content (abfd, symtab))
0a1b45a2 2728 return false;
c9ffd2ea
TG		 2729
2730 /* Adjust linkedit size. */
2731 if (linkedit != NULL)
2732 {
2733 /* bfd_vma pagemask = bfd_mach_o_get_backend_data (abfd)->page_size - 1; */
2734
2735 linkedit->vmsize = mdata->filelen - linkedit->fileoff;
2736 /* linkedit->vmsize = (linkedit->vmsize + pagemask) & ~pagemask; */
2737 linkedit->filesize = mdata->filelen - linkedit->fileoff;
2738
2739 linkedit->initprot = BFD_MACH_O_PROT_READ;
2740 linkedit->maxprot = BFD_MACH_O_PROT_READ | BFD_MACH_O_PROT_WRITE
2741 | BFD_MACH_O_PROT_EXECUTE;
2742 }
2743
2744 /* Second pass: write commands. */
2745 for (cmd = mdata->first_command; cmd != NULL; cmd = cmd->next)
3af9a47b 2746 {
46d1c23b 2747 struct mach_o_load_command_external raw;
3af9a47b
NC		 2748 unsigned long typeflag;
2749
c9ffd2ea 2750 typeflag = cmd->type | (cmd->type_required ? BFD_MACH_O_LC_REQ_DYLD : 0);
3af9a47b 2751
46d1c23b 2752 bfd_h_put_32 (abfd, typeflag, raw.cmd);
c9ffd2ea 2753 bfd_h_put_32 (abfd, cmd->len, raw.cmdsize);
3af9a47b 2754
c9ffd2ea 2755 if (bfd_seek (abfd, cmd->offset, SEEK_SET) != 0
226f9f4f 2756 || bfd_write (&raw, BFD_MACH_O_LC_SIZE, abfd) != 8)
0a1b45a2 2757 return false;
3af9a47b 2758
c9ffd2ea 2759 switch (cmd->type)
3af9a47b
NC		 2760 {
2761 case BFD_MACH_O_LC_SEGMENT:
c9ffd2ea 2762 if (!bfd_mach_o_write_segment_32 (abfd, cmd))
0a1b45a2 2763 return false;
1e8a024a
TG		 2764 break;
2765 case BFD_MACH_O_LC_SEGMENT_64:
c9ffd2ea 2766 if (!bfd_mach_o_write_segment_64 (abfd, cmd))
0a1b45a2 2767 return false;
3af9a47b
NC		 2768 break;
2769 case BFD_MACH_O_LC_SYMTAB:
c9ffd2ea 2770 if (!bfd_mach_o_write_symtab (abfd, cmd))
0a1b45a2 2771 return false;
3af9a47b 2772 break;
7f307238 2773 case BFD_MACH_O_LC_DYSYMTAB:
c9ffd2ea 2774 if (!bfd_mach_o_write_dysymtab (abfd, cmd))
0a1b45a2 2775 return false;
7f307238 2776 break;
3af9a47b
NC		 2777 case BFD_MACH_O_LC_THREAD:
2778 case BFD_MACH_O_LC_UNIXTHREAD:
c9ffd2ea 2779 if (!bfd_mach_o_write_thread (abfd, cmd))
0a1b45a2 2780 return false;
3af9a47b 2781 break;
3af9a47b 2782 case BFD_MACH_O_LC_LOAD_DYLIB:
c9ffd2ea 2783 if (!bfd_mach_o_write_dylib (abfd, cmd))
0a1b45a2 2784 return false;
c9ffd2ea 2785 break;
3af9a47b 2786 case BFD_MACH_O_LC_LOAD_DYLINKER:
c9ffd2ea 2787 if (!bfd_mach_o_write_dylinker (abfd, cmd))
0a1b45a2 2788 return false;
c9ffd2ea
TG		 2789 break;
2790 case BFD_MACH_O_LC_MAIN:
2791 if (!bfd_mach_o_write_main (abfd, cmd))
0a1b45a2 2792 return false;
c9ffd2ea
TG		 2793 break;
2794 case BFD_MACH_O_LC_DYLD_INFO:
2795 if (!bfd_mach_o_write_dyld_info (abfd, cmd))
0a1b45a2 2796 return false;
3af9a47b
NC		 2797 break;
2798 default:
4eca0228 2799 _bfd_error_handler
d42c267e
AM		 2800 (_("unable to write unknown load command %#x"),
2801 cmd->type);
0a1b45a2 2802 return false;
3af9a47b
NC		 2803 }
2804 }
2805
0a1b45a2 2806 return true;
3af9a47b
NC		 2807}
2808
f1bde64c
TG		 2809static void
2810bfd_mach_o_append_section_to_segment (bfd_mach_o_segment_command *seg,
07d6d2b8 2811 bfd_mach_o_section *s)
f1bde64c 2812{
f1bde64c
TG		 2813 if (seg->sect_head == NULL)
2814 seg->sect_head = s;
2815 else
2816 seg->sect_tail->next = s;
2817 seg->sect_tail = s;
2818}
2819
2820/* Create section Mach-O flags from BFD flags. */
2821
2822static void
3cc27770
TG		 2823bfd_mach_o_set_section_flags_from_bfd (bfd *abfd ATTRIBUTE_UNUSED,
2824 asection *sec)
f1bde64c
TG		 2825{
2826 flagword bfd_flags;
2827 bfd_mach_o_section *s = bfd_mach_o_get_mach_o_section (sec);
2828
2829 /* Create default flags. */
fd361982 2830 bfd_flags = bfd_section_flags (sec);
f1bde64c
TG		 2831 if ((bfd_flags & SEC_CODE) == SEC_CODE)
2832 s->flags = BFD_MACH_O_S_ATTR_PURE_INSTRUCTIONS
2833 | BFD_MACH_O_S_ATTR_SOME_INSTRUCTIONS
2834 | BFD_MACH_O_S_REGULAR;
2835 else if ((bfd_flags & (SEC_ALLOC | SEC_LOAD)) == SEC_ALLOC)
2836 s->flags = BFD_MACH_O_S_ZEROFILL;
2837 else if (bfd_flags & SEC_DEBUGGING)
2838 s->flags = BFD_MACH_O_S_REGULAR | BFD_MACH_O_S_ATTR_DEBUG;
2839 else
2840 s->flags = BFD_MACH_O_S_REGULAR;
2841}
2842
0a1b45a2 2843static bool
c9ffd2ea 2844bfd_mach_o_build_obj_seg_command (bfd *abfd, bfd_mach_o_segment_command *seg)
7f307238 2845{
c9ffd2ea
TG		 2846 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
2847 unsigned int i, j;
7f307238 2848
7f307238 2849 seg->vmaddr = 0;
7f307238 2850 seg->fileoff = mdata->filelen;
c9ffd2ea
TG		 2851 seg->initprot = BFD_MACH_O_PROT_READ | BFD_MACH_O_PROT_WRITE
2852 | BFD_MACH_O_PROT_EXECUTE;
2853 seg->maxprot = seg->initprot;
7f307238 2854
68ffbac6 2855 /* Append sections to the segment.
09903f4b
IS		 2856
2857 This is a little tedious, we have to honor the need to account zerofill
2858 sections after all the rest. This forces us to do the calculation of
68ffbac6 2859 total vmsize in three passes so that any alignment increments are
09903f4b 2860 properly accounted. */
7f307238
IS		 2861 for (i = 0; i < mdata->nsects; ++i)
2862 {
2863 bfd_mach_o_section *s = mdata->sections[i];
2864 asection *sec = s->bfdsection;
2865
09903f4b
IS		 2866 /* Although we account for zerofill section sizes in vm order, they are
2867 placed in the file in source sequence. */
c9ffd2ea 2868 bfd_mach_o_append_section_to_segment (seg, s);
e5081f2f 2869 s->offset = 0;
68ffbac6 2870
c9ffd2ea
TG		 2871 /* Zerofill sections have zero file size & offset, the only content
2872 written to the file is the symbols. */
e5081f2f 2873 if ((s->flags & BFD_MACH_O_SECTION_TYPE_MASK) == BFD_MACH_O_S_ZEROFILL
07d6d2b8 2874 || ((s->flags & BFD_MACH_O_SECTION_TYPE_MASK)
c9ffd2ea 2875 == BFD_MACH_O_S_GB_ZEROFILL))
07d6d2b8 2876 continue;
e5081f2f 2877
c9ffd2ea
TG		 2878 /* The Darwin system tools (in MH_OBJECT files, at least) always account
2879 sections, even those with zero size. */
e5081f2f 2880 if (s->size > 0)
c9ffd2ea 2881 {
09903f4b
IS		 2882 seg->vmsize = FILE_ALIGN (seg->vmsize, s->align);
2883 seg->vmsize += s->size;
2884
c9ffd2ea
TG		 2885 /* MH_OBJECT files have unaligned content. */
2886 if (1)
2887 {
2888 seg->filesize = FILE_ALIGN (seg->filesize, s->align);
07d6d2b8
AM		 2889 mdata->filelen = FILE_ALIGN (mdata->filelen, s->align);
2890 }
09903f4b
IS		 2891 seg->filesize += s->size;
2892
c9ffd2ea
TG		 2893 /* The system tools write even zero-sized sections with an offset
2894 field set to the current file position. */
07d6d2b8 2895 s->offset = mdata->filelen;
c9ffd2ea 2896 }
7f307238
IS		 2897
2898 sec->filepos = s->offset;
7f307238
IS		 2899 mdata->filelen += s->size;
2900 }
2901
3cc27770 2902 /* Now pass through again, for zerofill, only now we just update the
c9ffd2ea
TG		 2903 vmsize, and then for zerofill_GB. */
2904 for (j = 0; j < 2; j++)
09903f4b 2905 {
c9ffd2ea 2906 unsigned int stype;
68ffbac6 2907
c9ffd2ea
TG		 2908 if (j == 0)
2909 stype = BFD_MACH_O_S_ZEROFILL;
2910 else
2911 stype = BFD_MACH_O_S_GB_ZEROFILL;
09903f4b 2912
c9ffd2ea
TG		 2913 for (i = 0; i < mdata->nsects; ++i)
2914 {
2915 bfd_mach_o_section *s = mdata->sections[i];
2916
2917 if ((s->flags & BFD_MACH_O_SECTION_TYPE_MASK) != stype)
2918 continue;
2919
2920 if (s->size > 0)
2921 {
2922 seg->vmsize = FILE_ALIGN (seg->vmsize, s->align);
2923 seg->vmsize += s->size;
2924 }
09903f4b
IS		 2925 }
2926 }
bb76d940 2927
09903f4b 2928 /* Allocate space for the relocations. */
707e555b 2929 mdata->filelen = FILE_ALIGN (mdata->filelen, 2);
bb76d940
IS		 2930
2931 for (i = 0; i < mdata->nsects; ++i)
2932 {
2933 bfd_mach_o_section *ms = mdata->sections[i];
2934 asection *sec = ms->bfdsection;
68ffbac6 2935
c9ffd2ea
TG		 2936 ms->nreloc = sec->reloc_count;
2937 if (ms->nreloc == 0)
07d6d2b8 2938 {
c9ffd2ea 2939 /* Clear nreloc and reloff if there is no relocs. */
bb76d940
IS		 2940 ms->reloff = 0;
2941 continue;
07d6d2b8 2942 }
bb76d940
IS		 2943 sec->rel_filepos = mdata->filelen;
2944 ms->reloff = sec->rel_filepos;
2945 mdata->filelen += sec->reloc_count * BFD_MACH_O_RELENT_SIZE;
2946 }
7f307238 2947
0a1b45a2 2948 return true;
7f307238
IS		 2949}
2950
0a1b45a2 2951static bool
c9ffd2ea 2952bfd_mach_o_build_exec_seg_command (bfd *abfd, bfd_mach_o_segment_command *seg)
50d10658 2953{
c9ffd2ea 2954 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
50d10658 2955 unsigned int i;
c9ffd2ea
TG		 2956 bfd_vma pagemask = bfd_mach_o_get_backend_data (abfd)->page_size - 1;
2957 bfd_vma vma;
2958 bfd_mach_o_section *s;
2959
2960 seg->vmsize = 0;
50d10658 2961
c9ffd2ea
TG		 2962 seg->fileoff = mdata->filelen;
2963 seg->maxprot = 0;
2964 seg->initprot = 0;
2965 seg->flags = 0;
2966
2967 /* Append sections to the segment. We assume they are properly ordered
2968 by vma (but we check that). */
2969 vma = 0;
50d10658
IS		 2970 for (i = 0; i < mdata->nsects; ++i)
2971 {
c9ffd2ea 2972 s = mdata->sections[i];
50d10658 2973
c9ffd2ea
TG		 2974 /* Consider only sections for this segment. */
2975 if (strcmp (seg->segname, s->segname) != 0)
2976 continue;
50d10658 2977
c9ffd2ea 2978 bfd_mach_o_append_section_to_segment (seg, s);
7f307238 2979
86eafac0
NC		 2980 if (s->addr < vma)
2981 {
4eca0228 2982 _bfd_error_handler
695344c0 2983 /* xgettext:c-format */
2dcf00ce
AM		 2984 (_("section address (%#" PRIx64 ") "
2985 "below start of segment (%#" PRIx64 ")"),
2986 (uint64_t) s->addr, (uint64_t) vma);
0a1b45a2 2987 return false;
86eafac0
NC		 2988 }
2989
c9ffd2ea 2990 vma = s->addr + s->size;
7f307238
IS		 2991 }
2992
c9ffd2ea
TG		 2993 /* Set segment file offset: make it page aligned. */
2994 vma = seg->sect_head->addr;
2995 seg->vmaddr = vma & ~pagemask;
2996 if ((mdata->filelen & pagemask) > (vma & pagemask))
2997 mdata->filelen += pagemask + 1;
2998 seg->fileoff = mdata->filelen & ~pagemask;
2999 mdata->filelen = seg->fileoff + (vma & pagemask);
7f307238 3000
c9ffd2ea
TG		 3001 /* Set section file offset. */
3002 for (s = seg->sect_head; s != NULL; s = s->next)
7f307238 3003 {
c9ffd2ea 3004 asection *sec = s->bfdsection;
fd361982 3005 flagword flags = bfd_section_flags (sec);
b22161d6 3006
c9ffd2ea
TG		 3007 /* Adjust segment size. */
3008 seg->vmsize = FILE_ALIGN (seg->vmsize, s->align);
3009 seg->vmsize += s->size;
3010
3011 /* File offset and length. */
3012 seg->filesize = FILE_ALIGN (seg->filesize, s->align);
3013
3014 if ((s->flags & BFD_MACH_O_SECTION_TYPE_MASK) != BFD_MACH_O_S_ZEROFILL
07d6d2b8 3015 && ((s->flags & BFD_MACH_O_SECTION_TYPE_MASK)
c9ffd2ea 3016 != BFD_MACH_O_S_GB_ZEROFILL))
b22161d6 3017 {
c9ffd2ea
TG		 3018 mdata->filelen = FILE_ALIGN (mdata->filelen, s->align);
3019
3020 s->offset = mdata->filelen;
3021 s->bfdsection->filepos = s->offset;
3022
3023 seg->filesize += s->size;
3024 mdata->filelen += s->size;
b22161d6 3025 }
c9ffd2ea 3026 else
b22161d6 3027 {
c9ffd2ea
TG		 3028 s->offset = 0;
3029 s->bfdsection->filepos = 0;
3030 }
3031
3032 /* Set protection. */
3033 if (flags & SEC_LOAD)
3034 {
3035 if (flags & SEC_CODE)
3036 seg->initprot |= BFD_MACH_O_PROT_READ | BFD_MACH_O_PROT_EXECUTE;
3037 if ((flags & (SEC_DATA | SEC_READONLY)) == SEC_DATA)
3038 seg->initprot |= BFD_MACH_O_PROT_WRITE | BFD_MACH_O_PROT_READ;
b22161d6 3039 }
c9ffd2ea
TG		 3040
3041 /* Relocs shouldn't appear in non-object files. */
3042 if (s->bfdsection->reloc_count != 0)
0a1b45a2 3043 return false;
b22161d6 3044 }
c9ffd2ea
TG		 3045
3046 /* Set maxprot. */
3047 if (seg->initprot != 0)
3048 seg->maxprot = BFD_MACH_O_PROT_READ | BFD_MACH_O_PROT_WRITE
3049 | BFD_MACH_O_PROT_EXECUTE;
b22161d6 3050 else
c9ffd2ea 3051 seg->maxprot = 0;
b22161d6 3052
c9ffd2ea
TG		 3053 /* Round segment size (and file size). */
3054 seg->vmsize = (seg->vmsize + pagemask) & ~pagemask;
3055 seg->filesize = (seg->filesize + pagemask) & ~pagemask;
3056 mdata->filelen = (mdata->filelen + pagemask) & ~pagemask;
7f307238 3057
0a1b45a2 3058 return true;
c9ffd2ea 3059}
68ffbac6 3060
c9ffd2ea
TG		 3061/* Layout the commands: set commands size and offset, set ncmds and sizeofcmds
3062 fields in header. */
68ffbac6 3063
0a1b45a2 3064static bool
c9ffd2ea
TG		 3065bfd_mach_o_layout_commands (bfd_mach_o_data_struct *mdata)
3066{
3067 unsigned wide = mach_o_wide_p (&mdata->header);
3068 unsigned int hdrlen;
3069 ufile_ptr offset;
3070 bfd_mach_o_load_command *cmd;
3071 unsigned int align;
0a1b45a2 3072 bool ret = true;
c9ffd2ea
TG		 3073
3074 hdrlen = wide ? BFD_MACH_O_HEADER_64_SIZE : BFD_MACH_O_HEADER_SIZE;
3075 align = wide ? 8 - 1 : 4 - 1;
3076 offset = hdrlen;
3077 mdata->header.ncmds = 0;
50d10658 3078
c9ffd2ea
TG		 3079 for (cmd = mdata->first_command; cmd; cmd = cmd->next)
3080 {
3081 mdata->header.ncmds++;
3082 cmd->offset = offset;
68ffbac6 3083
c9ffd2ea
TG		 3084 switch (cmd->type)
3085 {
3086 case BFD_MACH_O_LC_SEGMENT_64:
3087 cmd->len = BFD_MACH_O_LC_SEGMENT_64_SIZE
3088 + BFD_MACH_O_SECTION_64_SIZE * cmd->command.segment.nsects;
3089 break;
3090 case BFD_MACH_O_LC_SEGMENT:
3091 cmd->len = BFD_MACH_O_LC_SEGMENT_SIZE
3092 + BFD_MACH_O_SECTION_SIZE * cmd->command.segment.nsects;
3093 break;
3094 case BFD_MACH_O_LC_SYMTAB:
3095 cmd->len = sizeof (struct mach_o_symtab_command_external)
3096 + BFD_MACH_O_LC_SIZE;
3097 break;
3098 case BFD_MACH_O_LC_DYSYMTAB:
3099 cmd->len = sizeof (struct mach_o_dysymtab_command_external)
3100 + BFD_MACH_O_LC_SIZE;
3101 break;
3102 case BFD_MACH_O_LC_LOAD_DYLIB:
3103 cmd->len = sizeof (struct mach_o_dylib_command_external)
3104 + BFD_MACH_O_LC_SIZE;
3105 cmd->command.dylib.name_offset = cmd->len;
3106 cmd->len += strlen (cmd->command.dylib.name_str);
3107 cmd->len = (cmd->len + align) & ~align;
3108 break;
3109 case BFD_MACH_O_LC_LOAD_DYLINKER:
3110 cmd->len = sizeof (struct mach_o_str_command_external)
3111 + BFD_MACH_O_LC_SIZE;
3112 cmd->command.dylinker.name_offset = cmd->len;
3113 cmd->len += strlen (cmd->command.dylinker.name_str);
3114 cmd->len = (cmd->len + align) & ~align;
3115 break;
3116 case BFD_MACH_O_LC_MAIN:
3117 cmd->len = sizeof (struct mach_o_entry_point_command_external)
3118 + BFD_MACH_O_LC_SIZE;
3119 break;
3120 case BFD_MACH_O_LC_DYLD_INFO:
3121 cmd->len = sizeof (struct mach_o_dyld_info_command_external)
3122 + BFD_MACH_O_LC_SIZE;
3123 break;
3124 default:
4eca0228 3125 _bfd_error_handler
d42c267e
AM		 3126 (_("unable to layout unknown load command %#x"),
3127 cmd->type);
0a1b45a2 3128 ret = false;
c9ffd2ea 3129 break;
7f307238 3130 }
c9ffd2ea
TG		 3131
3132 BFD_ASSERT (cmd->len % (align + 1) == 0);
3133 offset += cmd->len;
7f307238 3134 }
c9ffd2ea
TG		 3135 mdata->header.sizeofcmds = offset - hdrlen;
3136 mdata->filelen = offset;
86eafac0
NC		 3137
3138 return ret;
c9ffd2ea 3139}
7f307238 3140
c9ffd2ea
TG		 3141/* Subroutine of bfd_mach_o_build_commands: set type, name and nsects of a
3142 segment. */
3143
3144static void
3145bfd_mach_o_init_segment (bfd_mach_o_data_struct *mdata,
3146 bfd_mach_o_load_command *cmd,
3147 const char *segname, unsigned int nbr_sect)
3148{
3149 bfd_mach_o_segment_command *seg = &cmd->command.segment;
3150 unsigned wide = mach_o_wide_p (&mdata->header);
3151
3152 /* Init segment command. */
3153 cmd->type = wide ? BFD_MACH_O_LC_SEGMENT_64 : BFD_MACH_O_LC_SEGMENT;
0a1b45a2 3154 cmd->type_required = false;
c9ffd2ea
TG		 3155
3156 strcpy (seg->segname, segname);
3157 seg->nsects = nbr_sect;
3158
3159 seg->vmaddr = 0;
3160 seg->vmsize = 0;
3161
3162 seg->fileoff = 0;
3163 seg->filesize = 0;
3164 seg->maxprot = 0;
3165 seg->initprot = 0;
3166 seg->flags = 0;
3167 seg->sect_head = NULL;
3168 seg->sect_tail = NULL;
7f307238
IS		 3169}
3170
3171/* Build Mach-O load commands (currently assuming an MH_OBJECT file).
3172 TODO: Other file formats, rebuilding symtab/dysymtab commands for strip
3173 and copy functionality. */
154a1ee5 3174
0a1b45a2 3175bool
154a1ee5
TG		 3176bfd_mach_o_build_commands (bfd *abfd)
3177{
046b007d 3178 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
bbd56171 3179 unsigned wide = mach_o_wide_p (&mdata->header);
c9ffd2ea
TG		 3180 unsigned int nbr_segcmd = 0;
3181 bfd_mach_o_load_command *commands;
3182 unsigned int nbr_commands;
bbd56171
IS		 3183 int symtab_idx = -1;
3184 int dysymtab_idx = -1;
c9ffd2ea
TG		 3185 int main_idx = -1;
3186 unsigned int i;
154a1ee5 3187
c9ffd2ea
TG		 3188 /* Return now if already built. */
3189 if (mdata->header.ncmds != 0)
0a1b45a2 3190 return true;
154a1ee5 3191
7f307238 3192 /* Fill in the file type, if not already set. */
7f307238 3193 if (mdata->header.filetype == 0)
154a1ee5 3194 {
7f307238 3195 if (abfd->flags & EXEC_P)
07d6d2b8 3196 mdata->header.filetype = BFD_MACH_O_MH_EXECUTE;
7f307238 3197 else if (abfd->flags & DYNAMIC)
07d6d2b8 3198 mdata->header.filetype = BFD_MACH_O_MH_DYLIB;
7f307238 3199 else
07d6d2b8 3200 mdata->header.filetype = BFD_MACH_O_MH_OBJECT;
154a1ee5 3201 }
7f307238
IS		 3202
3203 /* If hasn't already been done, flatten sections list, and sort
3204 if/when required. Must be done before the symbol table is adjusted,
3205 since that depends on properly numbered sections. */
3206 if (mdata->nsects == 0 || mdata->sections == NULL)
3207 if (! bfd_mach_o_mangle_sections (abfd, mdata))
0a1b45a2 3208 return false;
7f307238
IS		 3209
3210 /* Order the symbol table, fill-in/check mach-o specific fields and
3211 partition out any indirect symbols. */
b22161d6 3212 if (!bfd_mach_o_mangle_symbols (abfd))
0a1b45a2 3213 return false;
7f307238 3214
c9ffd2ea
TG		 3215 /* Segment commands. */
3216 if (mdata->header.filetype == BFD_MACH_O_MH_OBJECT)
3217 {
3218 /* Only one segment for all the sections. But the segment is
3219 optional if there is no sections. */
3220 nbr_segcmd = (mdata->nsects > 0) ? 1 : 0;
3221 }
3222 else
3223 {
3224 bfd_mach_o_section *prev_sect = NULL;
bbd56171 3225
c9ffd2ea
TG		 3226 /* One pagezero segment and one linkedit segment. */
3227 nbr_segcmd = 2;
bbd56171 3228
c9ffd2ea
TG		 3229 /* Create one segment for associated segment name in sections.
3230 Assume that sections with the same segment name are consecutive. */
3231 for (i = 0; i < mdata->nsects; i++)
3232 {
3233 bfd_mach_o_section *this_sect = mdata->sections[i];
bbd56171 3234
c9ffd2ea
TG		 3235 if (prev_sect == NULL
3236 || strcmp (prev_sect->segname, this_sect->segname) != 0)
3237 {
3238 nbr_segcmd++;
3239 prev_sect = this_sect;
3240 }
3241 }
154a1ee5 3242 }
154a1ee5 3243
c9ffd2ea
TG		 3244 nbr_commands = nbr_segcmd;
3245
3246 /* One command for the symbol table (only if there are symbols. */
7f307238 3247 if (bfd_get_symcount (abfd) > 0)
c9ffd2ea 3248 symtab_idx = nbr_commands++;
c2f09c75 3249
bbd56171
IS		 3250 /* FIXME:
3251 This is a rather crude test for whether we should build a dysymtab. */
3252 if (bfd_mach_o_should_emit_dysymtab ()
3253 && bfd_get_symcount (abfd))
3254 {
bbd56171
IS		 3255 /* If there should be a case where a dysymtab could be emitted without
3256 a symtab (seems improbable), this would need amending. */
c9ffd2ea 3257 dysymtab_idx = nbr_commands++;
bbd56171 3258 }
154a1ee5 3259
c9ffd2ea
TG		 3260 /* Add an entry point command. */
3261 if (mdata->header.filetype == BFD_MACH_O_MH_EXECUTE
3262 && bfd_get_start_address (abfd) != 0)
3263 main_idx = nbr_commands++;
c2f09c75 3264
bbd56171 3265 /* Well, we must have a header, at least. */
c9ffd2ea 3266 mdata->filelen = wide ? BFD_MACH_O_HEADER_64_SIZE : BFD_MACH_O_HEADER_SIZE;
f1bde64c 3267
bbd56171 3268 /* A bit unusual, but no content is valid;
7f307238 3269 as -n empty.s -o empty.o */
c9ffd2ea
TG		 3270 if (nbr_commands == 0)
3271 {
3272 /* Layout commands (well none...) and set headers command fields. */
86eafac0 3273 return bfd_mach_o_layout_commands (mdata);
c9ffd2ea 3274 }
f1bde64c 3275
c9ffd2ea
TG		 3276 /* Create commands for segments (and symtabs), prepend them. */
3277 commands = bfd_zalloc (abfd, nbr_commands * sizeof (bfd_mach_o_load_command));
3278 if (commands == NULL)
0a1b45a2 3279 return false;
c9ffd2ea
TG		 3280 for (i = 0; i < nbr_commands - 1; i++)
3281 commands[i].next = &commands[i + 1];
3282 commands[nbr_commands - 1].next = mdata->first_command;
3283 if (mdata->first_command == NULL)
3284 mdata->last_command = &commands[nbr_commands - 1];
3285 mdata->first_command = &commands[0];
3286
3287 if (mdata->header.filetype == BFD_MACH_O_MH_OBJECT && nbr_segcmd != 0)
3288 {
3289 /* For object file, there is only one segment. */
3290 bfd_mach_o_init_segment (mdata, &commands[0], "", mdata->nsects);
3291 }
3292 else if (nbr_segcmd != 0)
68ffbac6 3293 {
c9ffd2ea 3294 bfd_mach_o_load_command *cmd;
7f307238 3295
c9ffd2ea 3296 BFD_ASSERT (nbr_segcmd >= 2);
7f307238 3297
c9ffd2ea
TG		 3298 /* The pagezero. */
3299 cmd = &commands[0];
3300 bfd_mach_o_init_segment (mdata, cmd, "__PAGEZERO", 0);
3301
3302 /* Segments from sections. */
3303 cmd++;
3304 for (i = 0; i < mdata->nsects;)
7f307238 3305 {
c9ffd2ea
TG		 3306 const char *segname = mdata->sections[i]->segname;
3307 unsigned int nbr_sect = 1;
3308
3309 /* Count number of sections for this segment. */
3310 for (i++; i < mdata->nsects; i++)
3311 if (strcmp (mdata->sections[i]->segname, segname) == 0)
3312 nbr_sect++;
3313 else
3314 break;
3315
3316 bfd_mach_o_init_segment (mdata, cmd, segname, nbr_sect);
3317 cmd++;
7f307238 3318 }
bbd56171 3319
c9ffd2ea
TG		 3320 /* The linkedit. */
3321 bfd_mach_o_init_segment (mdata, cmd, "__LINKEDIT", 0);
7f307238 3322 }
f1bde64c 3323
bbd56171 3324 if (symtab_idx >= 0)
7f307238
IS		 3325 {
3326 /* Init symtab command. */
c9ffd2ea 3327 bfd_mach_o_load_command *cmd = &commands[symtab_idx];
68ffbac6 3328
bbd56171 3329 cmd->type = BFD_MACH_O_LC_SYMTAB;
0a1b45a2 3330 cmd->type_required = false;
7f307238 3331 }
154a1ee5 3332
bbd56171
IS		 3333 /* If required, setup symtab command, see comment above about the quality
3334 of this test. */
3335 if (dysymtab_idx >= 0)
7f307238 3336 {
c9ffd2ea 3337 bfd_mach_o_load_command *cmd = &commands[dysymtab_idx];
bbd56171 3338
7f307238 3339 cmd->type = BFD_MACH_O_LC_DYSYMTAB;
0a1b45a2 3340 cmd->type_required = false;
c9ffd2ea
TG		 3341 }
3342
3343 /* Create the main command. */
3344 if (main_idx >= 0)
3345 {
3346 bfd_mach_o_load_command *cmd = &commands[main_idx];
7f307238 3347
c9ffd2ea 3348 cmd->type = BFD_MACH_O_LC_MAIN;
0a1b45a2 3349 cmd->type_required = true;
c9ffd2ea
TG		 3350
3351 cmd->command.main.entryoff = 0;
3352 cmd->command.main.stacksize = 0;
154a1ee5 3353 }
154a1ee5 3354
c9ffd2ea 3355 /* Layout commands. */
86eafac0 3356 if (! bfd_mach_o_layout_commands (mdata))
0a1b45a2 3357 return false;
c9ffd2ea 3358
7f307238
IS		 3359 /* So, now we have sized the commands and the filelen set to that.
3360 Now we can build the segment command and set the section file offsets. */
c9ffd2ea
TG		 3361 if (mdata->header.filetype == BFD_MACH_O_MH_OBJECT)
3362 {
3363 for (i = 0; i < nbr_segcmd; i++)
3364 if (!bfd_mach_o_build_obj_seg_command
3365 (abfd, &commands[i].command.segment))
0a1b45a2 3366 return false;
c9ffd2ea
TG		 3367 }
3368 else
3369 {
3370 bfd_vma maxvma = 0;
7f307238 3371
c9ffd2ea
TG		 3372 /* Skip pagezero and linkedit segments. */
3373 for (i = 1; i < nbr_segcmd - 1; i++)
3374 {
3375 bfd_mach_o_segment_command *seg = &commands[i].command.segment;
3376
3377 if (!bfd_mach_o_build_exec_seg_command (abfd, seg))
0a1b45a2 3378 return false;
c9ffd2ea
TG		 3379
3380 if (seg->vmaddr + seg->vmsize > maxvma)
3381 maxvma = seg->vmaddr + seg->vmsize;
3382 }
3383
3384 /* Set the size of __PAGEZERO. */
3385 commands[0].command.segment.vmsize =
3386 commands[1].command.segment.vmaddr;
3387
3388 /* Set the vma and fileoff of __LINKEDIT. */
3389 commands[nbr_segcmd - 1].command.segment.vmaddr = maxvma;
3390 commands[nbr_segcmd - 1].command.segment.fileoff = mdata->filelen;
3391
3392 /* Set entry point (once segments have been laid out). */
3393 if (main_idx >= 0)
3394 commands[main_idx].command.main.entryoff =
3395 bfd_get_start_address (abfd) - commands[1].command.segment.vmaddr;
3396 }
7f307238 3397
0a1b45a2 3398 return true;
154a1ee5
TG		 3399}
3400
3401/* Set the contents of a section. */
3402
0a1b45a2 3403bool
154a1ee5
TG		 3404bfd_mach_o_set_section_contents (bfd *abfd,
3405 asection *section,
3406 const void * location,
3407 file_ptr offset,
3408 bfd_size_type count)
3409{
3410 file_ptr pos;
3411
7f307238
IS		 3412 /* Trying to write the first section contents will trigger the creation of
3413 the load commands if they are not already present. */
c9ffd2ea 3414 if (!abfd->output_has_begun && !bfd_mach_o_build_commands (abfd))
0a1b45a2 3415 return false;
154a1ee5
TG		 3416
3417 if (count == 0)
0a1b45a2 3418 return true;
154a1ee5
TG		 3419
3420 pos = section->filepos + offset;
3421 if (bfd_seek (abfd, pos, SEEK_SET) != 0
226f9f4f 3422 || bfd_write (location, count, abfd) != count)
0a1b45a2 3423 return false;
154a1ee5 3424
0a1b45a2 3425 return true;
154a1ee5
TG		 3426}
3427
3428int
116c20d2 3429bfd_mach_o_sizeof_headers (bfd *a ATTRIBUTE_UNUSED,
a6b96beb 3430 struct bfd_link_info *info ATTRIBUTE_UNUSED)
3af9a47b
NC		 3431{
3432 return 0;
3433}
3434
3435/* Make an empty symbol. This is required only because
3436 bfd_make_section_anyway wants to create a symbol for the section. */
3437
154a1ee5 3438asymbol *
116c20d2 3439bfd_mach_o_make_empty_symbol (bfd *abfd)
3af9a47b 3440{
d3ce72d0
NC		 3441 asymbol *new_symbol;
3442
3443 new_symbol = bfd_zalloc (abfd, sizeof (bfd_mach_o_asymbol));
3444 if (new_symbol == NULL)
3445 return new_symbol;
3446 new_symbol->the_bfd = abfd;
b22161d6 3447 new_symbol->udata.i = SYM_MACHO_FIELDS_UNSET;
d3ce72d0 3448 return new_symbol;
3af9a47b
NC		 3449}
3450
0a1b45a2 3451static bool
47daa70f 3452bfd_mach_o_read_header (bfd *abfd, file_ptr hdr_off, bfd_mach_o_header *header)
3af9a47b 3453{
46d1c23b 3454 struct mach_o_header_external raw;
1e8a024a 3455 unsigned int size;
edeb6e24 3456 bfd_vma (*get32) (const void *) = NULL;
3af9a47b 3457
1e8a024a 3458 /* Just read the magic number. */
47daa70f 3459 if (bfd_seek (abfd, hdr_off, SEEK_SET) != 0
226f9f4f 3460 || bfd_read (raw.magic, sizeof (raw.magic), abfd) != 4)
0a1b45a2 3461 return false;
3af9a47b 3462
46d1c23b 3463 if (bfd_getb32 (raw.magic) == BFD_MACH_O_MH_MAGIC)
3af9a47b
NC		 3464 {
3465 header->byteorder = BFD_ENDIAN_BIG;
154a1ee5 3466 header->magic = BFD_MACH_O_MH_MAGIC;
1e8a024a 3467 header->version = 1;
3af9a47b
NC		 3468 get32 = bfd_getb32;
3469 }
46d1c23b 3470 else if (bfd_getl32 (raw.magic) == BFD_MACH_O_MH_MAGIC)
3af9a47b 3471 {
a95a4550 3472 header->byteorder = BFD_ENDIAN_LITTLE;
154a1ee5 3473 header->magic = BFD_MACH_O_MH_MAGIC;
1e8a024a
TG		 3474 header->version = 1;
3475 get32 = bfd_getl32;
3476 }
46d1c23b 3477 else if (bfd_getb32 (raw.magic) == BFD_MACH_O_MH_MAGIC_64)
1e8a024a
TG		 3478 {
3479 header->byteorder = BFD_ENDIAN_BIG;
154a1ee5 3480 header->magic = BFD_MACH_O_MH_MAGIC_64;
1e8a024a
TG		 3481 header->version = 2;
3482 get32 = bfd_getb32;
3483 }
46d1c23b 3484 else if (bfd_getl32 (raw.magic) == BFD_MACH_O_MH_MAGIC_64)
1e8a024a
TG		 3485 {
3486 header->byteorder = BFD_ENDIAN_LITTLE;
154a1ee5 3487 header->magic = BFD_MACH_O_MH_MAGIC_64;
1e8a024a 3488 header->version = 2;
3af9a47b
NC		 3489 get32 = bfd_getl32;
3490 }
3491 else
3492 {
3493 header->byteorder = BFD_ENDIAN_UNKNOWN;
0a1b45a2 3494 return false;
3af9a47b 3495 }
a95a4550 3496
1e8a024a 3497 /* Once the size of the header is known, read the full header. */
c2f09c75 3498 size = mach_o_wide_p (header) ?
154a1ee5 3499 BFD_MACH_O_HEADER_64_SIZE : BFD_MACH_O_HEADER_SIZE;
1e8a024a 3500
47daa70f 3501 if (bfd_seek (abfd, hdr_off, SEEK_SET) != 0
226f9f4f 3502 || bfd_read (&raw, size, abfd) != size)
0a1b45a2 3503 return false;
1e8a024a 3504
46d1c23b
TG		 3505 header->cputype = (*get32) (raw.cputype);
3506 header->cpusubtype = (*get32) (raw.cpusubtype);
3507 header->filetype = (*get32) (raw.filetype);
3508 header->ncmds = (*get32) (raw.ncmds);
3509 header->sizeofcmds = (*get32) (raw.sizeofcmds);
3510 header->flags = (*get32) (raw.flags);
3af9a47b 3511
c2f09c75 3512 if (mach_o_wide_p (header))
46d1c23b 3513 header->reserved = (*get32) (raw.reserved);
facf03f2
TG		 3514 else
3515 header->reserved = 0;
1e8a024a 3516
0a1b45a2 3517 return true;
3af9a47b
NC		 3518}
3519
0a1b45a2 3520bool
f1bde64c
TG		 3521bfd_mach_o_new_section_hook (bfd *abfd, asection *sec)
3522{
3523 bfd_mach_o_section *s;
fd361982 3524 unsigned bfdalign = bfd_section_alignment (sec);
f1bde64c
TG		 3525
3526 s = bfd_mach_o_get_mach_o_section (sec);
3527 if (s == NULL)
3528 {
3529 flagword bfd_flags;
a4551119 3530 static const mach_o_section_name_xlat * xlat;
f1bde64c
TG		 3531
3532 s = (bfd_mach_o_section *) bfd_zalloc (abfd, sizeof (*s));
3533 if (s == NULL)
0a1b45a2 3534 return false;
f1bde64c
TG		 3535 sec->used_by_bfd = s;
3536 s->bfdsection = sec;
3537
a4551119
TG		 3538 /* Create the Darwin seg/sect name pair from the bfd name.
3539 If this is a canonical name for which a specific paiting exists
3540 there will also be defined flags, type, attribute and alignment
3541 values. */
3542 xlat = bfd_mach_o_convert_section_name_to_mach_o (abfd, sec, s);
3543 if (xlat != NULL)
3544 {
3545 s->flags = xlat->macho_sectype | xlat->macho_secattr;
68ffbac6 3546 s->align = xlat->sectalign > bfdalign ? xlat->sectalign
a4551119 3547 : bfdalign;
fd361982
AM		 3548 bfd_set_section_alignment (sec, s->align);
3549 bfd_flags = bfd_section_flags (sec);
a4551119 3550 if (bfd_flags == SEC_NO_FLAGS)
fd361982 3551 bfd_set_section_flags (sec, xlat->bfd_flags);
a4551119 3552 }
f1bde64c 3553 else
a4551119
TG		 3554 /* Create default flags. */
3555 bfd_mach_o_set_section_flags_from_bfd (abfd, sec);
f1bde64c
TG		 3556 }
3557
3558 return _bfd_generic_new_section_hook (abfd, sec);
3559}
3560
3561static void
fd361982 3562bfd_mach_o_init_section_from_mach_o (asection *sec, unsigned long prot)
3af9a47b 3563{
117ed4f8 3564 flagword flags;
f1bde64c 3565 bfd_mach_o_section *section;
3af9a47b 3566
fd361982 3567 flags = bfd_section_flags (sec);
f1bde64c 3568 section = bfd_mach_o_get_mach_o_section (sec);
3af9a47b 3569
a4551119
TG		 3570 /* TODO: see if we should use the xlat system for doing this by
3571 preference and fall back to this for unknown sections. */
3572
8462aec7 3573 if (flags == SEC_NO_FLAGS)
ef17cb22 3574 {
8462aec7
TG		 3575 /* Try to guess flags. */
3576 if (section->flags & BFD_MACH_O_S_ATTR_DEBUG)
07d6d2b8 3577 flags = SEC_DEBUGGING;
8462aec7 3578 else
07d6d2b8
AM		 3579 {
3580 flags = SEC_ALLOC;
3581 if ((section->flags & BFD_MACH_O_SECTION_TYPE_MASK)
3582 != BFD_MACH_O_S_ZEROFILL)
3583 {
3584 flags |= SEC_LOAD;
3585 if (prot & BFD_MACH_O_PROT_EXECUTE)
3586 flags |= SEC_CODE;
3587 if (prot & BFD_MACH_O_PROT_WRITE)
3588 flags |= SEC_DATA;
3589 else if (prot & BFD_MACH_O_PROT_READ)
3590 flags |= SEC_READONLY;
3591 }
3592 }
ef17cb22 3593 }
15e1c58a
TG		 3594 else
3595 {
8462aec7 3596 if ((flags & SEC_DEBUGGING) == 0)
07d6d2b8 3597 flags |= SEC_ALLOC;
15e1c58a 3598 }
8462aec7
TG		 3599
3600 if (section->offset != 0)
3601 flags |= SEC_HAS_CONTENTS;
92bc0e80
TG		 3602 if (section->nreloc != 0)
3603 flags |= SEC_RELOC;
3604
fd361982 3605 bfd_set_section_flags (sec, flags);
f1bde64c
TG		 3606
3607 sec->vma = section->addr;
3608 sec->lma = section->addr;
3609 sec->size = section->size;
3610 sec->filepos = section->offset;
3611 sec->alignment_power = section->align;
3612 sec->segment_mark = 0;
3613 sec->reloc_count = section->nreloc;
3614 sec->rel_filepos = section->reloff;
3615}
3616
3617static asection *
3618bfd_mach_o_make_bfd_section (bfd *abfd,
07d6d2b8
AM		 3619 const unsigned char *segname,
3620 const unsigned char *sectname)
f1bde64c
TG		 3621{
3622 const char *sname;
3623 flagword flags;
a95a4550 3624
f1bde64c
TG		 3625 bfd_mach_o_convert_section_name_to_bfd
3626 (abfd, (const char *)segname, (const char *)sectname, &sname, &flags);
3627 if (sname == NULL)
3628 return NULL;
3af9a47b 3629
f1bde64c 3630 return bfd_make_section_anyway_with_flags (abfd, sname, flags);
3af9a47b
NC		 3631}
3632
f1bde64c 3633static asection *
47daa70f 3634bfd_mach_o_read_section_32 (bfd *abfd, unsigned long prot)
3af9a47b 3635{
46d1c23b 3636 struct mach_o_section_32_external raw;
f1bde64c
TG		 3637 asection *sec;
3638 bfd_mach_o_section *section;
3af9a47b 3639
226f9f4f 3640 if (bfd_read (&raw, BFD_MACH_O_SECTION_SIZE, abfd)
47daa70f 3641 != BFD_MACH_O_SECTION_SIZE)
f1bde64c 3642 return NULL;
a95a4550 3643
5a5cbf72 3644 sec = bfd_mach_o_make_bfd_section (abfd, raw.segname, raw.sectname);
f1bde64c
TG		 3645 if (sec == NULL)
3646 return NULL;
3647
3648 section = bfd_mach_o_get_mach_o_section (sec);
3649 memcpy (section->segname, raw.segname, sizeof (raw.segname));
3650 section->segname[BFD_MACH_O_SEGNAME_SIZE] = 0;
3651 memcpy (section->sectname, raw.sectname, sizeof (raw.sectname));
69499dca 3652 section->sectname[BFD_MACH_O_SECTNAME_SIZE] = 0;
46d1c23b
TG		 3653 section->addr = bfd_h_get_32 (abfd, raw.addr);
3654 section->size = bfd_h_get_32 (abfd, raw.size);
3655 section->offset = bfd_h_get_32 (abfd, raw.offset);
3656 section->align = bfd_h_get_32 (abfd, raw.align);
c86934ce 3657 /* PR 17512: file: 0017eb76. */
fcec5deb 3658 if (section->align >= 31)
c86934ce 3659 {
4eca0228 3660 _bfd_error_handler
fcec5deb
AM		 3661 (_("bfd_mach_o_read_section_32: overlarge alignment value: %#lx"),
3662 section->align);
3663 section->align = 30;
c86934ce 3664 }
46d1c23b
TG		 3665 section->reloff = bfd_h_get_32 (abfd, raw.reloff);
3666 section->nreloc = bfd_h_get_32 (abfd, raw.nreloc);
3667 section->flags = bfd_h_get_32 (abfd, raw.flags);
3668 section->reserved1 = bfd_h_get_32 (abfd, raw.reserved1);
3669 section->reserved2 = bfd_h_get_32 (abfd, raw.reserved2);
1e8a024a 3670 section->reserved3 = 0;
1e8a024a 3671
fd361982 3672 bfd_mach_o_init_section_from_mach_o (sec, prot);
1e8a024a 3673
f1bde64c 3674 return sec;
1e8a024a
TG		 3675}
3676
f1bde64c 3677static asection *
47daa70f 3678bfd_mach_o_read_section_64 (bfd *abfd, unsigned long prot)
1e8a024a 3679{
46d1c23b 3680 struct mach_o_section_64_external raw;
f1bde64c
TG		 3681 asection *sec;
3682 bfd_mach_o_section *section;
1e8a024a 3683
226f9f4f 3684 if (bfd_read (&raw, BFD_MACH_O_SECTION_64_SIZE, abfd)
47daa70f 3685 != BFD_MACH_O_SECTION_64_SIZE)
f1bde64c
TG		 3686 return NULL;
3687
5a5cbf72 3688 sec = bfd_mach_o_make_bfd_section (abfd, raw.segname, raw.sectname);
f1bde64c
TG		 3689 if (sec == NULL)
3690 return NULL;
1e8a024a 3691
f1bde64c
TG		 3692 section = bfd_mach_o_get_mach_o_section (sec);
3693 memcpy (section->segname, raw.segname, sizeof (raw.segname));
3694 section->segname[BFD_MACH_O_SEGNAME_SIZE] = 0;
3695 memcpy (section->sectname, raw.sectname, sizeof (raw.sectname));
69499dca 3696 section->sectname[BFD_MACH_O_SECTNAME_SIZE] = 0;
46d1c23b
TG		 3697 section->addr = bfd_h_get_64 (abfd, raw.addr);
3698 section->size = bfd_h_get_64 (abfd, raw.size);
3699 section->offset = bfd_h_get_32 (abfd, raw.offset);
3700 section->align = bfd_h_get_32 (abfd, raw.align);
fcec5deb 3701 if (section->align >= 63)
c86934ce 3702 {
4eca0228 3703 _bfd_error_handler
fcec5deb
AM		 3704 (_("bfd_mach_o_read_section_64: overlarge alignment value: %#lx"),
3705 section->align);
3706 section->align = 62;
c86934ce 3707 }
46d1c23b
TG		 3708 section->reloff = bfd_h_get_32 (abfd, raw.reloff);
3709 section->nreloc = bfd_h_get_32 (abfd, raw.nreloc);
3710 section->flags = bfd_h_get_32 (abfd, raw.flags);
3711 section->reserved1 = bfd_h_get_32 (abfd, raw.reserved1);
3712 section->reserved2 = bfd_h_get_32 (abfd, raw.reserved2);
3713 section->reserved3 = bfd_h_get_32 (abfd, raw.reserved3);
3af9a47b 3714
fd361982 3715 bfd_mach_o_init_section_from_mach_o (sec, prot);
3af9a47b 3716
f1bde64c 3717 return sec;
3af9a47b
NC		 3718}
3719
f1bde64c 3720static asection *
47daa70f 3721bfd_mach_o_read_section (bfd *abfd, unsigned long prot, unsigned int wide)
1e8a024a
TG		 3722{
3723 if (wide)
47daa70f 3724 return bfd_mach_o_read_section_64 (abfd, prot);
1e8a024a 3725 else
47daa70f 3726 return bfd_mach_o_read_section_32 (abfd, prot);
1e8a024a
TG		 3727}
3728
0a1b45a2 3729static bool
ab273af8 3730bfd_mach_o_read_symtab_symbol (bfd *abfd,
07d6d2b8
AM		 3731 bfd_mach_o_symtab_command *sym,
3732 bfd_mach_o_asymbol *s,
3733 unsigned long i)
3af9a47b 3734{
046b007d 3735 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
c2f09c75 3736 unsigned int wide = mach_o_wide_p (&mdata->header);
046b007d
TG		 3737 unsigned int symwidth =
3738 wide ? BFD_MACH_O_NLIST_64_SIZE : BFD_MACH_O_NLIST_SIZE;
92bc0e80 3739 unsigned int symoff = sym->symoff + (i * symwidth);
46d1c23b 3740 struct mach_o_nlist_64_external raw;
3af9a47b
NC		 3741 unsigned char type = -1;
3742 unsigned char section = -1;
3743 short desc = -1;
1e8a024a 3744 symvalue value = -1;
3af9a47b
NC		 3745 unsigned long stroff = -1;
3746 unsigned int symtype = -1;
3747
3748 BFD_ASSERT (sym->strtab != NULL);
3749
c2f09c75 3750 if (bfd_seek (abfd, symoff, SEEK_SET) != 0
226f9f4f 3751 || bfd_read (&raw, symwidth, abfd) != symwidth)
3af9a47b 3752 {
4eca0228 3753 _bfd_error_handler
695344c0 3754 /* xgettext:c-format */
07d6d2b8
AM		 3755 (_("bfd_mach_o_read_symtab_symbol: unable to read %d bytes at %u"),
3756 symwidth, symoff);
0a1b45a2 3757 return false;
3af9a47b
NC		 3758 }
3759
46d1c23b
TG		 3760 stroff = bfd_h_get_32 (abfd, raw.n_strx);
3761 type = bfd_h_get_8 (abfd, raw.n_type);
c2f09c75 3762 symtype = type & BFD_MACH_O_N_TYPE;
46d1c23b
TG		 3763 section = bfd_h_get_8 (abfd, raw.n_sect);
3764 desc = bfd_h_get_16 (abfd, raw.n_desc);
1e8a024a 3765 if (wide)
46d1c23b 3766 value = bfd_h_get_64 (abfd, raw.n_value);
1e8a024a 3767 else
46d1c23b 3768 value = bfd_h_get_32 (abfd, raw.n_value);
3af9a47b
NC		 3769
3770 if (stroff >= sym->strsize)
3771 {
4eca0228 3772 _bfd_error_handler
695344c0 3773 /* xgettext:c-format */
07d6d2b8
AM		 3774 (_("bfd_mach_o_read_symtab_symbol: name out of range (%lu >= %u)"),
3775 stroff,
3776 sym->strsize);
0a1b45a2 3777 return false;
3af9a47b
NC		 3778 }
3779
92bc0e80
TG		 3780 s->symbol.the_bfd = abfd;
3781 s->symbol.name = sym->strtab + stroff;
3782 s->symbol.value = value;
3783 s->symbol.flags = 0x0;
b22161d6 3784 s->symbol.udata.i = i;
92bc0e80
TG		 3785 s->n_type = type;
3786 s->n_sect = section;
3787 s->n_desc = desc;
3af9a47b
NC		 3788
3789 if (type & BFD_MACH_O_N_STAB)
3790 {
92bc0e80
TG		 3791 s->symbol.flags |= BSF_DEBUGGING;
3792 s->symbol.section = bfd_und_section_ptr;
15e1c58a
TG		 3793 switch (type)
3794 {
3795 case N_FUN:
3796 case N_STSYM:
3797 case N_LCSYM:
3798 case N_BNSYM:
3799 case N_SLINE:
3800 case N_ENSYM:
3801 case N_ECOMM:
3802 case N_ECOML:
3803 case N_GSYM:
3804 if ((section > 0) && (section <= mdata->nsects))
3805 {
92bc0e80
TG		 3806 s->symbol.section = mdata->sections[section - 1]->bfdsection;
3807 s->symbol.value =
07d6d2b8 3808 s->symbol.value - mdata->sections[section - 1]->addr;
15e1c58a
TG		 3809 }
3810 break;
3811 }
3af9a47b
NC		 3812 }
3813 else
3814 {
b22161d6 3815 if (type & (BFD_MACH_O_N_PEXT | BFD_MACH_O_N_EXT))
92bc0e80 3816 s->symbol.flags |= BSF_GLOBAL;
b22161d6 3817 else
92bc0e80 3818 s->symbol.flags |= BSF_LOCAL;
3af9a47b
NC		 3819
3820 switch (symtype)
3821 {
3822 case BFD_MACH_O_N_UNDF:
07d6d2b8
AM		 3823 if (type == (BFD_MACH_O_N_UNDF | BFD_MACH_O_N_EXT)
3824 && s->symbol.value != 0)
3825 {
3826 /* A common symbol. */
3827 s->symbol.section = bfd_com_section_ptr;
3828 s->symbol.flags = BSF_NO_FLAGS;
3829 }
3830 else
3831 {
3832 s->symbol.section = bfd_und_section_ptr;
3833 if (s->n_desc & BFD_MACH_O_N_WEAK_REF)
3834 s->symbol.flags |= BSF_WEAK;
3835 }
3af9a47b
NC		 3836 break;
3837 case BFD_MACH_O_N_PBUD:
92bc0e80 3838 s->symbol.section = bfd_und_section_ptr;
3af9a47b
NC		 3839 break;
3840 case BFD_MACH_O_N_ABS:
92bc0e80 3841 s->symbol.section = bfd_abs_section_ptr;
3af9a47b
NC		 3842 break;
3843 case BFD_MACH_O_N_SECT:
3844 if ((section > 0) && (section <= mdata->nsects))
3845 {
92bc0e80
TG		 3846 s->symbol.section = mdata->sections[section - 1]->bfdsection;
3847 s->symbol.value =
07d6d2b8 3848 s->symbol.value - mdata->sections[section - 1]->addr;
3af9a47b
NC		 3849 }
3850 else
3851 {
3852 /* Mach-O uses 0 to mean "no section"; not an error. */
3853 if (section != 0)
3854 {
4eca0228 3855 _bfd_error_handler
695344c0 3856 /* xgettext:c-format */
4eca0228
AM		 3857 (_("bfd_mach_o_read_symtab_symbol: "
3858 "symbol \"%s\" specified invalid section %d (max %lu): "
3859 "setting to undefined"),
3860 s->symbol.name, section, mdata->nsects);
3af9a47b 3861 }
92bc0e80 3862 s->symbol.section = bfd_und_section_ptr;
3af9a47b
NC		 3863 }
3864 break;
3865 case BFD_MACH_O_N_INDR:
0596a831
TG		 3866 /* FIXME: we don't follow the BFD convention as this indirect symbol
3867 won't be followed by the referenced one. This looks harmless
3868 unless we start using the linker. */
3869 s->symbol.flags |= BSF_INDIRECT;
3870 s->symbol.section = bfd_ind_section_ptr;
3871 s->symbol.value = 0;
3af9a47b
NC		 3872 break;
3873 default:
4eca0228 3874 _bfd_error_handler
695344c0 3875 /* xgettext:c-format */
4eca0228
AM		 3876 (_("bfd_mach_o_read_symtab_symbol: "
3877 "symbol \"%s\" specified invalid type field 0x%x: "
3878 "setting to undefined"), s->symbol.name, symtype);
92bc0e80 3879 s->symbol.section = bfd_und_section_ptr;
3af9a47b
NC		 3880 break;
3881 }
3882 }
3883
0a1b45a2 3884 return true;
3af9a47b
NC		 3885}
3886
0a1b45a2 3887bool
ab273af8 3888bfd_mach_o_read_symtab_strtab (bfd *abfd)
3af9a47b 3889{
046b007d
TG		 3890 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
3891 bfd_mach_o_symtab_command *sym = mdata->symtab;
3892
3893 /* Fail if there is no symtab. */
3894 if (sym == NULL)
0a1b45a2 3895 return false;
046b007d
TG		 3896
3897 /* Success if already loaded. */
3898 if (sym->strtab)
0a1b45a2 3899 return true;
3af9a47b
NC		 3900
3901 if (abfd->flags & BFD_IN_MEMORY)
3902 {
3903 struct bfd_in_memory *b;
3904
3905 b = (struct bfd_in_memory *) abfd->iostream;
3906
3907 if ((sym->stroff + sym->strsize) > b->size)
3908 {
3909 bfd_set_error (bfd_error_file_truncated);
0a1b45a2 3910 return false;
3af9a47b 3911 }
f075ee0c 3912 sym->strtab = (char *) b->buffer + sym->stroff;
3af9a47b 3913 }
046b007d 3914 else
3af9a47b 3915 {
8bdf0be1
NC		 3916 /* See PR 21840 for a reproducer. */
3917 if ((sym->strsize + 1) == 0)
0a1b45a2 3918 return false;
2bb3687b 3919 if (bfd_seek (abfd, sym->stroff, SEEK_SET) != 0)
0a1b45a2 3920 return false;
2bb3687b
AM		 3921 sym->strtab = (char *) _bfd_alloc_and_read (abfd, sym->strsize + 1,
3922 sym->strsize);
046b007d 3923 if (sym->strtab == NULL)
0a1b45a2 3924 return false;
046b007d 3925
e7287c7f
NC		 3926 /* Zero terminate the string table. */
3927 sym->strtab[sym->strsize] = 0;
3af9a47b
NC		 3928 }
3929
0a1b45a2 3930 return true;
3af9a47b
NC		 3931}
3932
0a1b45a2 3933bool
ab273af8 3934bfd_mach_o_read_symtab_symbols (bfd *abfd)
3af9a47b 3935{
046b007d
TG		 3936 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
3937 bfd_mach_o_symtab_command *sym = mdata->symtab;
3af9a47b 3938 unsigned long i;
1f4361a7 3939 size_t amt;
a4425a57 3940 ufile_ptr filesize;
3af9a47b 3941
a4425a57 3942 if (sym == NULL || sym->nsyms == 0 || sym->symbols)
0a9d414a 3943 /* Return now if there are no symbols or if already loaded. */
0a1b45a2 3944 return true;
046b007d 3945
a4425a57
AM		 3946 filesize = bfd_get_file_size (abfd);
3947 if (filesize != 0)
3948 {
3949 unsigned int wide = mach_o_wide_p (&mdata->header);
3950 unsigned int symwidth
3951 = wide ? BFD_MACH_O_NLIST_64_SIZE : BFD_MACH_O_NLIST_SIZE;
3952
3953 if (sym->symoff > filesize
3954 || sym->nsyms > (filesize - sym->symoff) / symwidth)
3955 {
3956 bfd_set_error (bfd_error_file_truncated);
3957 sym->nsyms = 0;
0a1b45a2 3958 return false;
a4425a57
AM		 3959 }
3960 }
1f4361a7
AM		 3961 if (_bfd_mul_overflow (sym->nsyms, sizeof (bfd_mach_o_asymbol), &amt)
3962 || (sym->symbols = bfd_alloc (abfd, amt)) == NULL)
3af9a47b 3963 {
1f4361a7 3964 bfd_set_error (bfd_error_no_memory);
64d29018 3965 sym->nsyms = 0;
0a1b45a2 3966 return false;
3af9a47b 3967 }
a95a4550 3968
afbb9e17 3969 if (!bfd_mach_o_read_symtab_strtab (abfd))
64d29018 3970 goto fail;
3af9a47b
NC		 3971
3972 for (i = 0; i < sym->nsyms; i++)
64d29018
NC		 3973 if (!bfd_mach_o_read_symtab_symbol (abfd, sym, &sym->symbols[i], i))
3974 goto fail;
a95a4550 3975
0a1b45a2 3976 return true;
64d29018
NC		 3977
3978 fail:
3979 bfd_release (abfd, sym->symbols);
3980 sym->symbols = NULL;
3981 sym->nsyms = 0;
0a1b45a2 3982 return false;
3af9a47b
NC		 3983}
3984
3985static const char *
116c20d2 3986bfd_mach_o_i386_flavour_string (unsigned int flavour)
3af9a47b
NC		 3987{
3988 switch ((int) flavour)
3989 {
15e1c58a
TG		 3990 case BFD_MACH_O_x86_THREAD_STATE32: return "x86_THREAD_STATE32";
3991 case BFD_MACH_O_x86_FLOAT_STATE32: return "x86_FLOAT_STATE32";
3992 case BFD_MACH_O_x86_EXCEPTION_STATE32: return "x86_EXCEPTION_STATE32";
3993 case BFD_MACH_O_x86_THREAD_STATE64: return "x86_THREAD_STATE64";
3994 case BFD_MACH_O_x86_FLOAT_STATE64: return "x86_FLOAT_STATE64";
3995 case BFD_MACH_O_x86_EXCEPTION_STATE64: return "x86_EXCEPTION_STATE64";
3996 case BFD_MACH_O_x86_THREAD_STATE: return "x86_THREAD_STATE";
3997 case BFD_MACH_O_x86_FLOAT_STATE: return "x86_FLOAT_STATE";
3998 case BFD_MACH_O_x86_EXCEPTION_STATE: return "x86_EXCEPTION_STATE";
3999 case BFD_MACH_O_x86_DEBUG_STATE32: return "x86_DEBUG_STATE32";
4000 case BFD_MACH_O_x86_DEBUG_STATE64: return "x86_DEBUG_STATE64";
4001 case BFD_MACH_O_x86_DEBUG_STATE: return "x86_DEBUG_STATE";
b32e07d7 4002 case BFD_MACH_O_x86_THREAD_STATE_NONE: return "x86_THREAD_STATE_NONE";
3af9a47b
NC		 4003 default: return "UNKNOWN";
4004 }
4005}
4006
4007static const char *
116c20d2 4008bfd_mach_o_ppc_flavour_string (unsigned int flavour)
3af9a47b
NC		 4009{
4010 switch ((int) flavour)
4011 {
b32e07d7
TG		 4012 case BFD_MACH_O_PPC_THREAD_STATE: return "PPC_THREAD_STATE";
4013 case BFD_MACH_O_PPC_FLOAT_STATE: return "PPC_FLOAT_STATE";
4014 case BFD_MACH_O_PPC_EXCEPTION_STATE: return "PPC_EXCEPTION_STATE";
4015 case BFD_MACH_O_PPC_VECTOR_STATE: return "PPC_VECTOR_STATE";
4016 case BFD_MACH_O_PPC_THREAD_STATE64: return "PPC_THREAD_STATE64";
4017 case BFD_MACH_O_PPC_EXCEPTION_STATE64: return "PPC_EXCEPTION_STATE64";
3af9a47b
NC		 4018 default: return "UNKNOWN";
4019 }
4020}
4021
806470a2 4022static unsigned char *
f7a559d5
AM		 4023bfd_mach_o_alloc_and_read (bfd *abfd, file_ptr filepos,
4024 size_t size, size_t extra)
806470a2 4025{
2bb3687b 4026 if (bfd_seek (abfd, filepos, SEEK_SET) != 0)
806470a2 4027 return NULL;
f7a559d5
AM		 4028 unsigned char *ret = _bfd_alloc_and_read (abfd, size + extra, size);
4029 if (ret && extra != 0)
4030 memset (ret + size, 0, extra);
4031 return ret;
806470a2
AM		 4032}
4033
0a1b45a2 4034static bool
ab273af8 4035bfd_mach_o_read_dylinker (bfd *abfd, bfd_mach_o_load_command *command)
3af9a47b
NC		 4036{
4037 bfd_mach_o_dylinker_command *cmd = &command->command.dylinker;
46d1c23b 4038 struct mach_o_str_command_external raw;
3af9a47b 4039 unsigned int nameoff;
f7a559d5 4040 size_t namelen;
3af9a47b 4041
3e6aa775 4042 if (command->len < sizeof (raw) + 8)
0a1b45a2 4043 return false;
226f9f4f 4044 if (bfd_read (&raw, sizeof (raw), abfd) != sizeof (raw))
0a1b45a2 4045 return false;
3af9a47b 4046
46d1c23b 4047 nameoff = bfd_h_get_32 (abfd, raw.str);
3e6aa775 4048 if (nameoff > command->len)
0a1b45a2 4049 return false;
3af9a47b 4050
4525c51a
TG		 4051 cmd->name_offset = nameoff;
4052 namelen = command->len - nameoff;
4053 nameoff += command->offset;
f7a559d5
AM		 4054 cmd->name_str = (char *) bfd_mach_o_alloc_and_read (abfd, nameoff,
4055 namelen, 1);
806470a2 4056 return cmd->name_str != NULL;
3af9a47b
NC		 4057}
4058
0a1b45a2 4059static bool
ab273af8 4060bfd_mach_o_read_dylib (bfd *abfd, bfd_mach_o_load_command *command)
3af9a47b 4061{
47daa70f 4062 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
3af9a47b 4063 bfd_mach_o_dylib_command *cmd = &command->command.dylib;
46d1c23b 4064 struct mach_o_dylib_command_external raw;
3af9a47b 4065 unsigned int nameoff;
f7a559d5 4066 size_t namelen;
806470a2 4067 file_ptr pos;
3af9a47b 4068
3e6aa775 4069 if (command->len < sizeof (raw) + 8)
0a1b45a2 4070 return false;
046b007d
TG		 4071 switch (command->type)
4072 {
4073 case BFD_MACH_O_LC_LOAD_DYLIB:
fbe383b9 4074 case BFD_MACH_O_LC_LAZY_LOAD_DYLIB:
046b007d 4075 case BFD_MACH_O_LC_LOAD_WEAK_DYLIB:
046b007d 4076 case BFD_MACH_O_LC_ID_DYLIB:
046b007d 4077 case BFD_MACH_O_LC_REEXPORT_DYLIB:
73017762 4078 case BFD_MACH_O_LC_LOAD_UPWARD_DYLIB:
046b007d
TG		 4079 break;
4080 default:
b32e07d7 4081 BFD_FAIL ();
0a1b45a2 4082 return false;
046b007d 4083 }
3af9a47b 4084
226f9f4f 4085 if (bfd_read (&raw, sizeof (raw), abfd) != sizeof (raw))
0a1b45a2 4086 return false;
3af9a47b 4087
46d1c23b 4088 nameoff = bfd_h_get_32 (abfd, raw.name);
3e6aa775 4089 if (nameoff > command->len)
0a1b45a2 4090 return false;
46d1c23b
TG		 4091 cmd->timestamp = bfd_h_get_32 (abfd, raw.timestamp);
4092 cmd->current_version = bfd_h_get_32 (abfd, raw.current_version);
4093 cmd->compatibility_version = bfd_h_get_32 (abfd, raw.compatibility_version);
3af9a47b
NC		 4094
4095 cmd->name_offset = command->offset + nameoff;
4525c51a 4096 namelen = command->len - nameoff;
806470a2 4097 pos = mdata->hdr_offset + cmd->name_offset;
f7a559d5 4098 cmd->name_str = (char *) bfd_mach_o_alloc_and_read (abfd, pos, namelen, 1);
806470a2 4099 return cmd->name_str != NULL;
3af9a47b
NC		 4100}
4101
0a1b45a2 4102static bool
7a79c514 4103bfd_mach_o_read_prebound_dylib (bfd *abfd,
07d6d2b8 4104 bfd_mach_o_load_command *command)
3af9a47b 4105{
7a79c514
TG		 4106 bfd_mach_o_prebound_dylib_command *cmd = &command->command.prebound_dylib;
4107 struct mach_o_prebound_dylib_command_external raw;
4108 unsigned int nameoff;
4109 unsigned int modoff;
4110 unsigned int str_len;
4111 unsigned char *str;
4112
3e6aa775 4113 if (command->len < sizeof (raw) + 8)
0a1b45a2 4114 return false;
226f9f4f 4115 if (bfd_read (&raw, sizeof (raw), abfd) != sizeof (raw))
0a1b45a2 4116 return false;
7a79c514
TG		 4117
4118 nameoff = bfd_h_get_32 (abfd, raw.name);
4119 modoff = bfd_h_get_32 (abfd, raw.linked_modules);
4120 if (nameoff > command->len || modoff > command->len)
0a1b45a2 4121 return false;
7a79c514
TG		 4122
4123 str_len = command->len - sizeof (raw);
2bb3687b 4124 str = _bfd_alloc_and_read (abfd, str_len, str_len);
7a79c514 4125 if (str == NULL)
0a1b45a2 4126 return false;
7a79c514
TG		 4127
4128 cmd->name_offset = command->offset + nameoff;
4129 cmd->nmodules = bfd_h_get_32 (abfd, raw.nmodules);
4130 cmd->linked_modules_offset = command->offset + modoff;
4131
4132 cmd->name_str = (char *)str + nameoff - (sizeof (raw) + BFD_MACH_O_LC_SIZE);
4133 cmd->linked_modules = str + modoff - (sizeof (raw) + BFD_MACH_O_LC_SIZE);
0a1b45a2 4134 return true;
7a79c514
TG		 4135}
4136
0a1b45a2 4137static bool
7a79c514
TG		 4138bfd_mach_o_read_prebind_cksum (bfd *abfd,
4139 bfd_mach_o_load_command *command)
4140{
4141 bfd_mach_o_prebind_cksum_command *cmd = &command->command.prebind_cksum;
4142 struct mach_o_prebind_cksum_command_external raw;
3af9a47b 4143
3e6aa775 4144 if (command->len < sizeof (raw) + 8)
0a1b45a2 4145 return false;
226f9f4f 4146 if (bfd_read (&raw, sizeof (raw), abfd) != sizeof (raw))
0a1b45a2 4147 return false;
7a79c514
TG		 4148
4149 cmd->cksum = bfd_get_32 (abfd, raw.cksum);
0a1b45a2 4150 return true;
7a79c514
TG		 4151}
4152
0a1b45a2 4153static bool
7a79c514
TG		 4154bfd_mach_o_read_twolevel_hints (bfd *abfd,
4155 bfd_mach_o_load_command *command)
4156{
4157 bfd_mach_o_twolevel_hints_command *cmd = &command->command.twolevel_hints;
4158 struct mach_o_twolevel_hints_command_external raw;
4159
3e6aa775 4160 if (command->len < sizeof (raw) + 8)
0a1b45a2 4161 return false;
226f9f4f 4162 if (bfd_read (&raw, sizeof (raw), abfd) != sizeof (raw))
0a1b45a2 4163 return false;
7a79c514
TG		 4164
4165 cmd->offset = bfd_get_32 (abfd, raw.offset);
4166 cmd->nhints = bfd_get_32 (abfd, raw.nhints);
0a1b45a2 4167 return true;
3af9a47b
NC		 4168}
4169
0a1b45a2 4170static bool
9f4a5bd1
TG		 4171bfd_mach_o_read_fvmlib (bfd *abfd, bfd_mach_o_load_command *command)
4172{
4173 bfd_mach_o_fvmlib_command *fvm = &command->command.fvmlib;
4174 struct mach_o_fvmlib_command_external raw;
4175 unsigned int nameoff;
f7a559d5 4176 size_t namelen;
9f4a5bd1 4177
3e6aa775 4178 if (command->len < sizeof (raw) + 8)
0a1b45a2 4179 return false;
226f9f4f 4180 if (bfd_read (&raw, sizeof (raw), abfd) != sizeof (raw))
0a1b45a2 4181 return false;
9f4a5bd1
TG		 4182
4183 nameoff = bfd_h_get_32 (abfd, raw.name);
3e6aa775 4184 if (nameoff > command->len)
0a1b45a2 4185 return false;
9f4a5bd1
TG		 4186 fvm->minor_version = bfd_h_get_32 (abfd, raw.minor_version);
4187 fvm->header_addr = bfd_h_get_32 (abfd, raw.header_addr);
4188
4189 fvm->name_offset = command->offset + nameoff;
4525c51a 4190 namelen = command->len - nameoff;
806470a2 4191 fvm->name_str = (char *) bfd_mach_o_alloc_and_read (abfd, fvm->name_offset,
f7a559d5 4192 namelen, 1);
806470a2 4193 return fvm->name_str != NULL;
9f4a5bd1
TG		 4194}
4195
0a1b45a2 4196static bool
ab273af8 4197bfd_mach_o_read_thread (bfd *abfd, bfd_mach_o_load_command *command)
3af9a47b 4198{
b32e07d7 4199 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
3af9a47b 4200 bfd_mach_o_thread_command *cmd = &command->command.thread;
92bc0e80 4201 unsigned int offset;
3af9a47b
NC		 4202 unsigned int nflavours;
4203 unsigned int i;
3e6aa775 4204 struct mach_o_thread_command_external raw;
1f4361a7 4205 size_t amt;
3af9a47b
NC		 4206
4207 BFD_ASSERT ((command->type == BFD_MACH_O_LC_THREAD)
4208 || (command->type == BFD_MACH_O_LC_UNIXTHREAD));
4209
b32e07d7 4210 /* Count the number of threads. */
3af9a47b
NC		 4211 offset = 8;
4212 nflavours = 0;
3e6aa775 4213 while (offset + sizeof (raw) <= command->len)
3af9a47b 4214 {
3e6aa775 4215 unsigned int count;
3af9a47b 4216
c2f09c75 4217 if (bfd_seek (abfd, command->offset + offset, SEEK_SET) != 0
226f9f4f 4218 || bfd_read (&raw, sizeof (raw), abfd) != sizeof (raw))
0a1b45a2 4219 return false;
3af9a47b 4220
3e6aa775
AM		 4221 count = bfd_h_get_32 (abfd, raw.count);
4222 if (count > (unsigned) -1 / 4
4223 || command->len - (offset + sizeof (raw)) < count * 4)
0a1b45a2 4224 return false;
3e6aa775 4225 offset += sizeof (raw) + count * 4;
3af9a47b
NC		 4226 nflavours++;
4227 }
3e6aa775 4228 if (nflavours == 0 || offset != command->len)
0a1b45a2 4229 return false;
3af9a47b 4230
b32e07d7 4231 /* Allocate threads. */
1f4361a7
AM		 4232 if (_bfd_mul_overflow (nflavours, sizeof (bfd_mach_o_thread_flavour), &amt))
4233 {
4234 bfd_set_error (bfd_error_file_too_big);
0a1b45a2 4235 return false;
1f4361a7
AM		 4236 }
4237 cmd->flavours = bfd_alloc (abfd, amt);
3af9a47b 4238 if (cmd->flavours == NULL)
0a1b45a2 4239 return false;
3af9a47b
NC		 4240 cmd->nflavours = nflavours;
4241
4242 offset = 8;
4243 nflavours = 0;
4244 while (offset != command->len)
4245 {
c2f09c75 4246 if (bfd_seek (abfd, command->offset + offset, SEEK_SET) != 0
226f9f4f 4247 || bfd_read (&raw, sizeof (raw), abfd) != sizeof (raw))
0a1b45a2 4248 return false;
3af9a47b 4249
46d1c23b
TG		 4250 cmd->flavours[nflavours].flavour = bfd_h_get_32 (abfd, raw.flavour);
4251 cmd->flavours[nflavours].offset = command->offset + offset + sizeof (raw);
4252 cmd->flavours[nflavours].size = bfd_h_get_32 (abfd, raw.count) * 4;
4253 offset += cmd->flavours[nflavours].size + sizeof (raw);
3af9a47b
NC		 4254 nflavours++;
4255 }
4256
4257 for (i = 0; i < nflavours; i++)
4258 {
4259 asection *bfdsec;
f7a559d5 4260 size_t snamelen;
3af9a47b
NC		 4261 char *sname;
4262 const char *flavourstr;
4263 const char *prefix = "LC_THREAD";
a95a4550
AM		 4264 unsigned int j = 0;
4265
3af9a47b
NC		 4266 switch (mdata->header.cputype)
4267 {
4268 case BFD_MACH_O_CPU_TYPE_POWERPC:
1e8a024a 4269 case BFD_MACH_O_CPU_TYPE_POWERPC_64:
707e555b
TG		 4270 flavourstr =
4271 bfd_mach_o_ppc_flavour_string (cmd->flavours[i].flavour);
3af9a47b
NC		 4272 break;
4273 case BFD_MACH_O_CPU_TYPE_I386:
1e8a024a 4274 case BFD_MACH_O_CPU_TYPE_X86_64:
707e555b
TG		 4275 flavourstr =
4276 bfd_mach_o_i386_flavour_string (cmd->flavours[i].flavour);
3af9a47b
NC		 4277 break;
4278 default:
4279 flavourstr = "UNKNOWN_ARCHITECTURE";
4280 break;
4281 }
a95a4550 4282
3af9a47b 4283 snamelen = strlen (prefix) + 1 + 20 + 1 + strlen (flavourstr) + 1;
116c20d2 4284 sname = bfd_alloc (abfd, snamelen);
3af9a47b 4285 if (sname == NULL)
0a1b45a2 4286 return false;
3af9a47b
NC		 4287
4288 for (;;)
4289 {
a95a4550
AM		 4290 sprintf (sname, "%s.%s.%u", prefix, flavourstr, j);
4291 if (bfd_get_section_by_name (abfd, sname) == NULL)
3af9a47b 4292 break;
a95a4550 4293 j++;
3af9a47b
NC		 4294 }
4295
117ed4f8 4296 bfdsec = bfd_make_section_with_flags (abfd, sname, SEC_HAS_CONTENTS);
a95a4550 4297
3af9a47b
NC		 4298 bfdsec->vma = 0;
4299 bfdsec->lma = 0;
eea6121a 4300 bfdsec->size = cmd->flavours[i].size;
3af9a47b
NC		 4301 bfdsec->filepos = cmd->flavours[i].offset;
4302 bfdsec->alignment_power = 0x0;
3af9a47b
NC		 4303
4304 cmd->section = bfdsec;
4305 }
4306
0a1b45a2 4307 return true;
3af9a47b
NC		 4308}
4309
0a1b45a2 4310static bool
a4425a57
AM		 4311bfd_mach_o_read_dysymtab (bfd *abfd, bfd_mach_o_load_command *command,
4312 ufile_ptr filesize)
3af9a47b 4313{
046b007d 4314 bfd_mach_o_dysymtab_command *cmd = &command->command.dysymtab;
b32e07d7 4315 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
3af9a47b
NC		 4316
4317 BFD_ASSERT (command->type == BFD_MACH_O_LC_DYSYMTAB);
4318
46d1c23b
TG		 4319 {
4320 struct mach_o_dysymtab_command_external raw;
4321
3e6aa775 4322 if (command->len < sizeof (raw) + 8)
0a1b45a2 4323 return false;
226f9f4f 4324 if (bfd_read (&raw, sizeof (raw), abfd) != sizeof (raw))
0a1b45a2 4325 return false;
3af9a47b 4326
46d1c23b
TG		 4327 cmd->ilocalsym = bfd_h_get_32 (abfd, raw.ilocalsym);
4328 cmd->nlocalsym = bfd_h_get_32 (abfd, raw.nlocalsym);
4329 cmd->iextdefsym = bfd_h_get_32 (abfd, raw.iextdefsym);
4330 cmd->nextdefsym = bfd_h_get_32 (abfd, raw.nextdefsym);
4331 cmd->iundefsym = bfd_h_get_32 (abfd, raw.iundefsym);
4332 cmd->nundefsym = bfd_h_get_32 (abfd, raw.nundefsym);
4333 cmd->tocoff = bfd_h_get_32 (abfd, raw.tocoff);
4334 cmd->ntoc = bfd_h_get_32 (abfd, raw.ntoc);
4335 cmd->modtaboff = bfd_h_get_32 (abfd, raw.modtaboff);
4336 cmd->nmodtab = bfd_h_get_32 (abfd, raw.nmodtab);
4337 cmd->extrefsymoff = bfd_h_get_32 (abfd, raw.extrefsymoff);
4338 cmd->nextrefsyms = bfd_h_get_32 (abfd, raw.nextrefsyms);
4339 cmd->indirectsymoff = bfd_h_get_32 (abfd, raw.indirectsymoff);
4340 cmd->nindirectsyms = bfd_h_get_32 (abfd, raw.nindirectsyms);
4341 cmd->extreloff = bfd_h_get_32 (abfd, raw.extreloff);
4342 cmd->nextrel = bfd_h_get_32 (abfd, raw.nextrel);
4343 cmd->locreloff = bfd_h_get_32 (abfd, raw.locreloff);
4344 cmd->nlocrel = bfd_h_get_32 (abfd, raw.nlocrel);
4345 }
046b007d
TG		 4346
4347 if (cmd->nmodtab != 0)
4348 {
046b007d
TG		 4349 unsigned int i;
4350 int wide = bfd_mach_o_wide_p (abfd);
4351 unsigned int module_len = wide ? 56 : 52;
1f4361a7 4352 size_t amt;
046b007d 4353
a4425a57
AM		 4354 if (cmd->modtaboff > filesize
4355 || cmd->nmodtab > (filesize - cmd->modtaboff) / module_len)
4356 {
4357 bfd_set_error (bfd_error_file_truncated);
0a1b45a2 4358 return false;
a4425a57 4359 }
1f4361a7
AM		 4360 if (_bfd_mul_overflow (cmd->nmodtab,
4361 sizeof (bfd_mach_o_dylib_module), &amt))
4362 {
4363 bfd_set_error (bfd_error_file_too_big);
0a1b45a2 4364 return false;
1f4361a7
AM		 4365 }
4366 cmd->dylib_module = bfd_alloc (abfd, amt);
046b007d 4367 if (cmd->dylib_module == NULL)
0a1b45a2 4368 return false;
046b007d
TG		 4369
4370 if (bfd_seek (abfd, cmd->modtaboff, SEEK_SET) != 0)
0a1b45a2 4371 return false;
046b007d
TG		 4372
4373 for (i = 0; i < cmd->nmodtab; i++)
07d6d2b8
AM		 4374 {
4375 bfd_mach_o_dylib_module *module = &cmd->dylib_module[i];
4376 unsigned long v;
4377 unsigned char buf[56];
4378
226f9f4f 4379 if (bfd_read (buf, module_len, abfd) != module_len)
0a1b45a2 4380 return false;
07d6d2b8
AM		 4381
4382 module->module_name_idx = bfd_h_get_32 (abfd, buf + 0);
4383 module->iextdefsym = bfd_h_get_32 (abfd, buf + 4);
4384 module->nextdefsym = bfd_h_get_32 (abfd, buf + 8);
4385 module->irefsym = bfd_h_get_32 (abfd, buf + 12);
4386 module->nrefsym = bfd_h_get_32 (abfd, buf + 16);
4387 module->ilocalsym = bfd_h_get_32 (abfd, buf + 20);
4388 module->nlocalsym = bfd_h_get_32 (abfd, buf + 24);
4389 module->iextrel = bfd_h_get_32 (abfd, buf + 28);
4390 module->nextrel = bfd_h_get_32 (abfd, buf + 32);
4391 v = bfd_h_get_32 (abfd, buf +36);
4392 module->iinit = v & 0xffff;
4393 module->iterm = (v >> 16) & 0xffff;
4394 v = bfd_h_get_32 (abfd, buf + 40);
4395 module->ninit = v & 0xffff;
4396 module->nterm = (v >> 16) & 0xffff;
4397 if (wide)
4398 {
4399 module->objc_module_info_size = bfd_h_get_32 (abfd, buf + 44);
4400 module->objc_module_info_addr = bfd_h_get_64 (abfd, buf + 48);
4401 }
4402 else
4403 {
4404 module->objc_module_info_addr = bfd_h_get_32 (abfd, buf + 44);
4405 module->objc_module_info_size = bfd_h_get_32 (abfd, buf + 48);
4406 }
4407 }
046b007d 4408 }
afbb9e17 4409
046b007d
TG		 4410 if (cmd->ntoc != 0)
4411 {
64d29018 4412 unsigned long i;
1f4361a7 4413 size_t amt;
a4425a57 4414 struct mach_o_dylib_table_of_contents_external raw;
046b007d 4415
a4425a57
AM		 4416 if (cmd->tocoff > filesize
4417 || cmd->ntoc > (filesize - cmd->tocoff) / sizeof (raw))
4418 {
4419 bfd_set_error (bfd_error_file_truncated);
0a1b45a2 4420 return false;
a4425a57 4421 }
1f4361a7
AM		 4422 if (_bfd_mul_overflow (cmd->ntoc,
4423 sizeof (bfd_mach_o_dylib_table_of_content), &amt))
4424 {
4425 bfd_set_error (bfd_error_file_too_big);
0a1b45a2 4426 return false;
1f4361a7
AM		 4427 }
4428 cmd->dylib_toc = bfd_alloc (abfd, amt);
046b007d 4429 if (cmd->dylib_toc == NULL)
0a1b45a2 4430 return false;
046b007d
TG		 4431
4432 if (bfd_seek (abfd, cmd->tocoff, SEEK_SET) != 0)
0a1b45a2 4433 return false;
046b007d
TG		 4434
4435 for (i = 0; i < cmd->ntoc; i++)
07d6d2b8 4436 {
07d6d2b8 4437 bfd_mach_o_dylib_table_of_content *toc = &cmd->dylib_toc[i];
046b007d 4438
226f9f4f 4439 if (bfd_read (&raw, sizeof (raw), abfd) != sizeof (raw))
0a1b45a2 4440 return false;
046b007d 4441
07d6d2b8
AM		 4442 toc->symbol_index = bfd_h_get_32 (abfd, raw.symbol_index);
4443 toc->module_index = bfd_h_get_32 (abfd, raw.module_index);
4444 }
046b007d
TG		 4445 }
4446
4447 if (cmd->nindirectsyms != 0)
4448 {
046b007d 4449 unsigned int i;
1f4361a7 4450 size_t amt;
046b007d 4451
a4425a57
AM		 4452 if (cmd->indirectsymoff > filesize
4453 || cmd->nindirectsyms > (filesize - cmd->indirectsymoff) / 4)
4454 {
4455 bfd_set_error (bfd_error_file_truncated);
0a1b45a2 4456 return false;
a4425a57 4457 }
1f4361a7
AM		 4458 if (_bfd_mul_overflow (cmd->nindirectsyms, sizeof (unsigned int), &amt))
4459 {
4460 bfd_set_error (bfd_error_file_too_big);
0a1b45a2 4461 return false;
1f4361a7
AM		 4462 }
4463 cmd->indirect_syms = bfd_alloc (abfd, amt);
046b007d 4464 if (cmd->indirect_syms == NULL)
0a1b45a2 4465 return false;
046b007d
TG		 4466
4467 if (bfd_seek (abfd, cmd->indirectsymoff, SEEK_SET) != 0)
0a1b45a2 4468 return false;
046b007d
TG		 4469
4470 for (i = 0; i < cmd->nindirectsyms; i++)
07d6d2b8
AM		 4471 {
4472 unsigned char raw[4];
4473 unsigned int *is = &cmd->indirect_syms[i];
046b007d 4474
226f9f4f 4475 if (bfd_read (raw, sizeof (raw), abfd) != sizeof (raw))
0a1b45a2 4476 return false;
046b007d 4477
07d6d2b8
AM		 4478 *is = bfd_h_get_32 (abfd, raw);
4479 }
046b007d
TG		 4480 }
4481
4482 if (cmd->nextrefsyms != 0)
4483 {
046b007d
TG		 4484 unsigned long v;
4485 unsigned int i;
1f4361a7 4486 size_t amt;
046b007d 4487
a4425a57
AM		 4488 if (cmd->extrefsymoff > filesize
4489 || cmd->nextrefsyms > (filesize - cmd->extrefsymoff) / 4)
4490 {
4491 bfd_set_error (bfd_error_file_truncated);
0a1b45a2 4492 return false;
a4425a57 4493 }
1f4361a7
AM		 4494 if (_bfd_mul_overflow (cmd->nextrefsyms,
4495 sizeof (bfd_mach_o_dylib_reference), &amt))
4496 {
4497 bfd_set_error (bfd_error_file_too_big);
0a1b45a2 4498 return false;
1f4361a7
AM		 4499 }
4500 cmd->ext_refs = bfd_alloc (abfd, amt);
046b007d 4501 if (cmd->ext_refs == NULL)
0a1b45a2 4502 return false;
046b007d
TG		 4503
4504 if (bfd_seek (abfd, cmd->extrefsymoff, SEEK_SET) != 0)
0a1b45a2 4505 return false;
046b007d
TG		 4506
4507 for (i = 0; i < cmd->nextrefsyms; i++)
07d6d2b8
AM		 4508 {
4509 unsigned char raw[4];
4510 bfd_mach_o_dylib_reference *ref = &cmd->ext_refs[i];
4511
226f9f4f 4512 if (bfd_read (raw, sizeof (raw), abfd) != sizeof (raw))
0a1b45a2 4513 return false;
07d6d2b8
AM		 4514
4515 /* Fields isym and flags are written as bit-fields, thus we need
4516 a specific processing for endianness. */
4517 v = bfd_h_get_32 (abfd, raw);
4518 if (bfd_big_endian (abfd))
4519 {
4520 ref->isym = (v >> 8) & 0xffffff;
4521 ref->flags = v & 0xff;
4522 }
4523 else
4524 {
4525 ref->isym = v & 0xffffff;
4526 ref->flags = (v >> 24) & 0xff;
4527 }
4528 }
046b007d 4529 }
3af9a47b 4530
b32e07d7 4531 if (mdata->dysymtab)
0a1b45a2 4532 return false;
b32e07d7
TG		 4533 mdata->dysymtab = cmd;
4534
0a1b45a2 4535 return true;
3af9a47b
NC		 4536}
4537
0a1b45a2 4538static bool
a4425a57
AM		 4539bfd_mach_o_read_symtab (bfd *abfd, bfd_mach_o_load_command *command,
4540 ufile_ptr filesize)
3af9a47b 4541{
046b007d
TG		 4542 bfd_mach_o_symtab_command *symtab = &command->command.symtab;
4543 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
46d1c23b 4544 struct mach_o_symtab_command_external raw;
3af9a47b
NC		 4545
4546 BFD_ASSERT (command->type == BFD_MACH_O_LC_SYMTAB);
4547
3e6aa775 4548 if (command->len < sizeof (raw) + 8)
0a1b45a2 4549 return false;
226f9f4f 4550 if (bfd_read (&raw, sizeof (raw), abfd) != sizeof (raw))
0a1b45a2 4551 return false;
a95a4550 4552
46d1c23b
TG		 4553 symtab->symoff = bfd_h_get_32 (abfd, raw.symoff);
4554 symtab->nsyms = bfd_h_get_32 (abfd, raw.nsyms);
4555 symtab->stroff = bfd_h_get_32 (abfd, raw.stroff);
4556 symtab->strsize = bfd_h_get_32 (abfd, raw.strsize);
046b007d
TG		 4557 symtab->symbols = NULL;
4558 symtab->strtab = NULL;
3af9a47b 4559
a4425a57
AM		 4560 if (symtab->symoff > filesize
4561 || symtab->nsyms > (filesize - symtab->symoff) / BFD_MACH_O_NLIST_SIZE
4562 || symtab->stroff > filesize
4563 || symtab->strsize > filesize - symtab->stroff)
4564 {
4565 bfd_set_error (bfd_error_file_truncated);
0a1b45a2 4566 return false;
a4425a57
AM		 4567 }
4568
046b007d 4569 if (symtab->nsyms != 0)
15e1c58a
TG		 4570 abfd->flags |= HAS_SYMS;
4571
046b007d 4572 if (mdata->symtab)
0a1b45a2 4573 return false;
046b007d 4574 mdata->symtab = symtab;
0a1b45a2 4575 return true;
3af9a47b
NC		 4576}
4577
0a1b45a2 4578static bool
ab273af8 4579bfd_mach_o_read_uuid (bfd *abfd, bfd_mach_o_load_command *command)
15e1c58a
TG		 4580{
4581 bfd_mach_o_uuid_command *cmd = &command->command.uuid;
15e1c58a
TG		 4582
4583 BFD_ASSERT (command->type == BFD_MACH_O_LC_UUID);
4584
3e6aa775 4585 if (command->len < 16 + 8)
0a1b45a2 4586 return false;
226f9f4f 4587 if (bfd_read (cmd->uuid, 16, abfd) != 16)
0a1b45a2 4588 return false;
15e1c58a 4589
0a1b45a2 4590 return true;
15e1c58a
TG		 4591}
4592
0a1b45a2 4593static bool
ab273af8 4594bfd_mach_o_read_linkedit (bfd *abfd, bfd_mach_o_load_command *command)
046b007d
TG		 4595{
4596 bfd_mach_o_linkedit_command *cmd = &command->command.linkedit;
46d1c23b 4597 struct mach_o_linkedit_data_command_external raw;
046b007d 4598
3e6aa775 4599 if (command->len < sizeof (raw) + 8)
0a1b45a2 4600 return false;
226f9f4f 4601 if (bfd_read (&raw, sizeof (raw), abfd) != sizeof (raw))
0a1b45a2 4602 return false;
046b007d 4603
46d1c23b
TG		 4604 cmd->dataoff = bfd_get_32 (abfd, raw.dataoff);
4605 cmd->datasize = bfd_get_32 (abfd, raw.datasize);
0a1b45a2 4606 return true;
046b007d
TG		 4607}
4608
0a1b45a2 4609static bool
ab273af8 4610bfd_mach_o_read_str (bfd *abfd, bfd_mach_o_load_command *command)
046b007d
TG		 4611{
4612 bfd_mach_o_str_command *cmd = &command->command.str;
46d1c23b 4613 struct mach_o_str_command_external raw;
046b007d
TG		 4614 unsigned long off;
4615
3e6aa775 4616 if (command->len < sizeof (raw) + 8)
0a1b45a2 4617 return false;
226f9f4f 4618 if (bfd_read (&raw, sizeof (raw), abfd) != sizeof (raw))
0a1b45a2 4619 return false;
046b007d 4620
46d1c23b 4621 off = bfd_get_32 (abfd, raw.str);
3e6aa775 4622 if (off > command->len)
0a1b45a2 4623 return false;
3e6aa775 4624
046b007d
TG		 4625 cmd->stroff = command->offset + off;
4626 cmd->str_len = command->len - off;
806470a2 4627 cmd->str = (char *) bfd_mach_o_alloc_and_read (abfd, cmd->stroff,
f7a559d5 4628 cmd->str_len, 1);
806470a2 4629 return cmd->str != NULL;
c9ffd2ea
TG		 4630}
4631
0a1b45a2 4632static bool
c9ffd2ea
TG		 4633bfd_mach_o_read_dyld_content (bfd *abfd, bfd_mach_o_dyld_info_command *cmd)
4634{
4635 /* Read rebase content. */
4636 if (cmd->rebase_content == NULL && cmd->rebase_size != 0)
4637 {
2bb3687b 4638 cmd->rebase_content
f7a559d5
AM		 4639 = bfd_mach_o_alloc_and_read (abfd, cmd->rebase_off,
4640 cmd->rebase_size, 0);
c9ffd2ea 4641 if (cmd->rebase_content == NULL)
0a1b45a2 4642 return false;
c9ffd2ea
TG		 4643 }
4644
4645 /* Read bind content. */
4646 if (cmd->bind_content == NULL && cmd->bind_size != 0)
4647 {
2bb3687b 4648 cmd->bind_content
f7a559d5
AM		 4649 = bfd_mach_o_alloc_and_read (abfd, cmd->bind_off,
4650 cmd->bind_size, 0);
c9ffd2ea 4651 if (cmd->bind_content == NULL)
0a1b45a2 4652 return false;
c9ffd2ea
TG		 4653 }
4654
4655 /* Read weak bind content. */
4656 if (cmd->weak_bind_content == NULL && cmd->weak_bind_size != 0)
4657 {
f7a559d5
AM		 4658 cmd->weak_bind_content
4659 = bfd_mach_o_alloc_and_read (abfd, cmd->weak_bind_off,
4660 cmd->weak_bind_size, 0);
c9ffd2ea 4661 if (cmd->weak_bind_content == NULL)
0a1b45a2 4662 return false;
c9ffd2ea
TG		 4663 }
4664
4665 /* Read lazy bind content. */
4666 if (cmd->lazy_bind_content == NULL && cmd->lazy_bind_size != 0)
4667 {
f7a559d5
AM		 4668 cmd->lazy_bind_content
4669 = bfd_mach_o_alloc_and_read (abfd, cmd->lazy_bind_off,
4670 cmd->lazy_bind_size, 0);
c9ffd2ea 4671 if (cmd->lazy_bind_content == NULL)
0a1b45a2 4672 return false;
c9ffd2ea
TG		 4673 }
4674
4675 /* Read export content. */
4676 if (cmd->export_content == NULL && cmd->export_size != 0)
4677 {
f7a559d5
AM		 4678 cmd->export_content
4679 = bfd_mach_o_alloc_and_read (abfd, cmd->export_off,
4680 cmd->export_size, 0);
c9ffd2ea 4681 if (cmd->export_content == NULL)
0a1b45a2 4682 return false;
c9ffd2ea
TG		 4683 }
4684
0a1b45a2 4685 return true;
c9ffd2ea
TG		 4686}
4687
0a1b45a2 4688static bool
ab273af8 4689bfd_mach_o_read_dyld_info (bfd *abfd, bfd_mach_o_load_command *command)
ad86f1fb
TG		 4690{
4691 bfd_mach_o_dyld_info_command *cmd = &command->command.dyld_info;
46d1c23b 4692 struct mach_o_dyld_info_command_external raw;
ad86f1fb 4693
3e6aa775 4694 if (command->len < sizeof (raw) + 8)
0a1b45a2 4695 return false;
226f9f4f 4696 if (bfd_read (&raw, sizeof (raw), abfd) != sizeof (raw))
0a1b45a2 4697 return false;
ad86f1fb 4698
46d1c23b
TG		 4699 cmd->rebase_off = bfd_get_32 (abfd, raw.rebase_off);
4700 cmd->rebase_size = bfd_get_32 (abfd, raw.rebase_size);
c9ffd2ea 4701 cmd->rebase_content = NULL;
46d1c23b
TG		 4702 cmd->bind_off = bfd_get_32 (abfd, raw.bind_off);
4703 cmd->bind_size = bfd_get_32 (abfd, raw.bind_size);
c9ffd2ea 4704 cmd->bind_content = NULL;
46d1c23b
TG		 4705 cmd->weak_bind_off = bfd_get_32 (abfd, raw.weak_bind_off);
4706 cmd->weak_bind_size = bfd_get_32 (abfd, raw.weak_bind_size);
c9ffd2ea 4707 cmd->weak_bind_content = NULL;
46d1c23b
TG		 4708 cmd->lazy_bind_off = bfd_get_32 (abfd, raw.lazy_bind_off);
4709 cmd->lazy_bind_size = bfd_get_32 (abfd, raw.lazy_bind_size);
c9ffd2ea 4710 cmd->lazy_bind_content = NULL;
46d1c23b
TG		 4711 cmd->export_off = bfd_get_32 (abfd, raw.export_off);
4712 cmd->export_size = bfd_get_32 (abfd, raw.export_size);
c9ffd2ea 4713 cmd->export_content = NULL;
0a1b45a2 4714 return true;
ad86f1fb
TG		 4715}
4716
0a1b45a2 4717static bool
edbdea0e
TG		 4718bfd_mach_o_read_version_min (bfd *abfd, bfd_mach_o_load_command *command)
4719{
4720 bfd_mach_o_version_min_command *cmd = &command->command.version_min;
4721 struct mach_o_version_min_command_external raw;
edbdea0e 4722
3e6aa775 4723 if (command->len < sizeof (raw) + 8)
0a1b45a2 4724 return false;
226f9f4f 4725 if (bfd_read (&raw, sizeof (raw), abfd) != sizeof (raw))
0a1b45a2 4726 return false;
edbdea0e 4727
fc7b364a
RB		 4728 cmd->version = bfd_get_32 (abfd, raw.version);
4729 cmd->sdk = bfd_get_32 (abfd, raw.sdk);
0a1b45a2 4730 return true;
edbdea0e
TG		 4731}
4732
0a1b45a2 4733static bool
fc55a902
TG		 4734bfd_mach_o_read_encryption_info (bfd *abfd, bfd_mach_o_load_command *command)
4735{
4736 bfd_mach_o_encryption_info_command *cmd = &command->command.encryption_info;
4737 struct mach_o_encryption_info_command_external raw;
4738
3e6aa775 4739 if (command->len < sizeof (raw) + 8)
0a1b45a2 4740 return false;
226f9f4f 4741 if (bfd_read (&raw, sizeof (raw), abfd) != sizeof (raw))
0a1b45a2 4742 return false;
47daa70f
TG		 4743
4744 cmd->cryptoff = bfd_get_32 (abfd, raw.cryptoff);
4745 cmd->cryptsize = bfd_get_32 (abfd, raw.cryptsize);
4746 cmd->cryptid = bfd_get_32 (abfd, raw.cryptid);
0a1b45a2 4747 return true;
47daa70f
TG		 4748}
4749
0a1b45a2 4750static bool
47daa70f
TG		 4751bfd_mach_o_read_encryption_info_64 (bfd *abfd, bfd_mach_o_load_command *command)
4752{
4753 bfd_mach_o_encryption_info_command *cmd = &command->command.encryption_info;
4754 struct mach_o_encryption_info_64_command_external raw;
4755
3e6aa775 4756 if (command->len < sizeof (raw) + 8)
0a1b45a2 4757 return false;
226f9f4f 4758 if (bfd_read (&raw, sizeof (raw), abfd) != sizeof (raw))
0a1b45a2 4759 return false;
fc55a902
TG		 4760
4761 cmd->cryptoff = bfd_get_32 (abfd, raw.cryptoff);
4762 cmd->cryptsize = bfd_get_32 (abfd, raw.cryptsize);
4763 cmd->cryptid = bfd_get_32 (abfd, raw.cryptid);
0a1b45a2 4764 return true;
fc55a902
TG		 4765}
4766
0a1b45a2 4767static bool
1778ad74
TG		 4768bfd_mach_o_read_main (bfd *abfd, bfd_mach_o_load_command *command)
4769{
4770 bfd_mach_o_main_command *cmd = &command->command.main;
4771 struct mach_o_entry_point_command_external raw;
4772
3e6aa775 4773 if (command->len < sizeof (raw) + 8)
0a1b45a2 4774 return false;
226f9f4f 4775 if (bfd_read (&raw, sizeof (raw), abfd) != sizeof (raw))
0a1b45a2 4776 return false;
1778ad74
TG		 4777
4778 cmd->entryoff = bfd_get_64 (abfd, raw.entryoff);
4779 cmd->stacksize = bfd_get_64 (abfd, raw.stacksize);
0a1b45a2 4780 return true;
1778ad74
TG		 4781}
4782
0a1b45a2 4783static bool
1778ad74
TG		 4784bfd_mach_o_read_source_version (bfd *abfd, bfd_mach_o_load_command *command)
4785{
4786 bfd_mach_o_source_version_command *cmd = &command->command.source_version;
4787 struct mach_o_source_version_command_external raw;
0e3c1eeb 4788 uint64_t ver;
1778ad74 4789
3e6aa775 4790 if (command->len < sizeof (raw) + 8)
0a1b45a2 4791 return false;
226f9f4f 4792 if (bfd_read (&raw, sizeof (raw), abfd) != sizeof (raw))
0a1b45a2 4793 return false;
1778ad74
TG		 4794
4795 ver = bfd_get_64 (abfd, raw.version);
4796 /* Note: we use a serie of shift to avoid shift > 32 (for which gcc
4797 generates warnings) in case of the host doesn't support 64 bit
4798 integers. */
4799 cmd->e = ver & 0x3ff;
4800 ver >>= 10;
4801 cmd->d = ver & 0x3ff;
4802 ver >>= 10;
4803 cmd->c = ver & 0x3ff;
4804 ver >>= 10;
4805 cmd->b = ver & 0x3ff;
4806 ver >>= 10;
4807 cmd->a = ver & 0xffffff;
0a1b45a2 4808 return true;
1778ad74
TG		 4809}
4810
0a1b45a2 4811static bool
fc7b364a
RB		 4812bfd_mach_o_read_note (bfd *abfd, bfd_mach_o_load_command *command)
4813{
4814 bfd_mach_o_note_command *cmd = &command->command.note;
4815 struct mach_o_note_command_external raw;
4816
3e6aa775 4817 if (command->len < sizeof (raw) + 8)
0a1b45a2 4818 return false;
226f9f4f 4819 if (bfd_read (&raw, sizeof (raw), abfd) != sizeof (raw))
0a1b45a2 4820 return false;
fc7b364a
RB		 4821
4822 memcpy (cmd->data_owner, raw.data_owner, 16);
4823 cmd->offset = bfd_get_64 (abfd, raw.offset);
4824 cmd->size = bfd_get_64 (abfd, raw.size);
0a1b45a2 4825 return true;
fc7b364a
RB		 4826}
4827
0a1b45a2 4828static bool
fc7b364a
RB		 4829bfd_mach_o_read_build_version (bfd *abfd, bfd_mach_o_load_command *command)
4830{
4831 bfd_mach_o_build_version_command *cmd = &command->command.build_version;
4832 struct mach_o_build_version_command_external raw;
4833
3e6aa775 4834 if (command->len < sizeof (raw) + 8)
0a1b45a2 4835 return false;
226f9f4f 4836 if (bfd_read (&raw, sizeof (raw), abfd) != sizeof (raw))
0a1b45a2 4837 return false;
fc7b364a
RB		 4838
4839 cmd->platform = bfd_get_32 (abfd, raw.platform);
4840 cmd->minos = bfd_get_32 (abfd, raw.minos);
4841 cmd->sdk = bfd_get_32 (abfd, raw.sdk);
4842 cmd->ntools = bfd_get_32 (abfd, raw.ntools);
0a1b45a2 4843 return true;
fc7b364a
RB		 4844}
4845
0a1b45a2 4846static bool
ab273af8 4847bfd_mach_o_read_segment (bfd *abfd,
07d6d2b8
AM		 4848 bfd_mach_o_load_command *command,
4849 unsigned int wide)
3af9a47b 4850{
3af9a47b
NC		 4851 bfd_mach_o_segment_command *seg = &command->command.segment;
4852 unsigned long i;
a95a4550 4853
1e8a024a
TG		 4854 if (wide)
4855 {
46d1c23b
TG		 4856 struct mach_o_segment_command_64_external raw;
4857
1e8a024a 4858 BFD_ASSERT (command->type == BFD_MACH_O_LC_SEGMENT_64);
3af9a47b 4859
3e6aa775 4860 if (command->len < sizeof (raw) + 8)
0a1b45a2 4861 return false;
226f9f4f 4862 if (bfd_read (&raw, sizeof (raw), abfd) != sizeof (raw))
0a1b45a2 4863 return false;
3af9a47b 4864
46d1c23b 4865 memcpy (seg->segname, raw.segname, 16);
15e1c58a 4866 seg->segname[16] = '\0';
1e8a024a 4867
46d1c23b
TG		 4868 seg->vmaddr = bfd_h_get_64 (abfd, raw.vmaddr);
4869 seg->vmsize = bfd_h_get_64 (abfd, raw.vmsize);
4870 seg->fileoff = bfd_h_get_64 (abfd, raw.fileoff);
4871 seg->filesize = bfd_h_get_64 (abfd, raw.filesize);
4872 seg->maxprot = bfd_h_get_32 (abfd, raw.maxprot);
4873 seg->initprot = bfd_h_get_32 (abfd, raw.initprot);
4874 seg->nsects = bfd_h_get_32 (abfd, raw.nsects);
4875 seg->flags = bfd_h_get_32 (abfd, raw.flags);
1e8a024a
TG		 4876 }
4877 else
4878 {
46d1c23b
TG		 4879 struct mach_o_segment_command_32_external raw;
4880
1e8a024a
TG		 4881 BFD_ASSERT (command->type == BFD_MACH_O_LC_SEGMENT);
4882
3e6aa775 4883 if (command->len < sizeof (raw) + 8)
0a1b45a2 4884 return false;
226f9f4f 4885 if (bfd_read (&raw, sizeof (raw), abfd) != sizeof (raw))
0a1b45a2 4886 return false;
1e8a024a 4887
46d1c23b 4888 memcpy (seg->segname, raw.segname, 16);
15e1c58a 4889 seg->segname[16] = '\0';
1e8a024a 4890
46d1c23b
TG		 4891 seg->vmaddr = bfd_h_get_32 (abfd, raw.vmaddr);
4892 seg->vmsize = bfd_h_get_32 (abfd, raw.vmsize);
4893 seg->fileoff = bfd_h_get_32 (abfd, raw.fileoff);
4894 seg->filesize = bfd_h_get_32 (abfd, raw.filesize);
4895 seg->maxprot = bfd_h_get_32 (abfd, raw.maxprot);
4896 seg->initprot = bfd_h_get_32 (abfd, raw.initprot);
4897 seg->nsects = bfd_h_get_32 (abfd, raw.nsects);
4898 seg->flags = bfd_h_get_32 (abfd, raw.flags);
1e8a024a 4899 }
9d4b6009
TG		 4900 seg->sect_head = NULL;
4901 seg->sect_tail = NULL;
3af9a47b 4902
f1bde64c 4903 for (i = 0; i < seg->nsects; i++)
3af9a47b 4904 {
f1bde64c 4905 asection *sec;
a95a4550 4906
47daa70f 4907 sec = bfd_mach_o_read_section (abfd, seg->initprot, wide);
f1bde64c 4908 if (sec == NULL)
0a1b45a2 4909 return false;
f1bde64c 4910
c9ffd2ea
TG		 4911 bfd_mach_o_append_section_to_segment
4912 (seg, bfd_mach_o_get_mach_o_section (sec));
3af9a47b
NC		 4913 }
4914
0a1b45a2 4915 return true;
3af9a47b
NC		 4916}
4917
0a1b45a2 4918static bool
ab273af8 4919bfd_mach_o_read_segment_32 (bfd *abfd, bfd_mach_o_load_command *command)
1e8a024a 4920{
ab273af8 4921 return bfd_mach_o_read_segment (abfd, command, 0);
1e8a024a
TG		 4922}
4923
0a1b45a2 4924static bool
ab273af8 4925bfd_mach_o_read_segment_64 (bfd *abfd, bfd_mach_o_load_command *command)
1e8a024a 4926{
ab273af8 4927 return bfd_mach_o_read_segment (abfd, command, 1);
1e8a024a
TG		 4928}
4929
0a1b45a2 4930static bool
a4425a57
AM		 4931bfd_mach_o_read_command (bfd *abfd, bfd_mach_o_load_command *command,
4932 ufile_ptr filesize)
3af9a47b 4933{
47daa70f 4934 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
46d1c23b
TG		 4935 struct mach_o_load_command_external raw;
4936 unsigned int cmd;
3af9a47b 4937
046b007d 4938 /* Read command type and length. */
47daa70f 4939 if (bfd_seek (abfd, mdata->hdr_offset + command->offset, SEEK_SET) != 0
226f9f4f 4940 || bfd_read (&raw, BFD_MACH_O_LC_SIZE, abfd) != BFD_MACH_O_LC_SIZE)
0a1b45a2 4941 return false;
3af9a47b 4942
46d1c23b 4943 cmd = bfd_h_get_32 (abfd, raw.cmd);
3e6aa775 4944 command->type = cmd & ~BFD_MACH_O_LC_REQ_DYLD;
63b4cc53 4945 command->type_required = (cmd & BFD_MACH_O_LC_REQ_DYLD) != 0;
46d1c23b 4946 command->len = bfd_h_get_32 (abfd, raw.cmdsize);
3e6aa775 4947 if (command->len < 8 || command->len % 4 != 0)
0a1b45a2 4948 return false;
3af9a47b
NC		 4949
4950 switch (command->type)
4951 {
4952 case BFD_MACH_O_LC_SEGMENT:
452216ab 4953 if (!bfd_mach_o_read_segment_32 (abfd, command))
0a1b45a2 4954 return false;
1e8a024a
TG		 4955 break;
4956 case BFD_MACH_O_LC_SEGMENT_64:
452216ab 4957 if (!bfd_mach_o_read_segment_64 (abfd, command))
0a1b45a2 4958 return false;
3af9a47b
NC		 4959 break;
4960 case BFD_MACH_O_LC_SYMTAB:
a4425a57 4961 if (!bfd_mach_o_read_symtab (abfd, command, filesize))
0a1b45a2 4962 return false;
3af9a47b
NC		 4963 break;
4964 case BFD_MACH_O_LC_SYMSEG:
4965 break;
4966 case BFD_MACH_O_LC_THREAD:
4967 case BFD_MACH_O_LC_UNIXTHREAD:
452216ab 4968 if (!bfd_mach_o_read_thread (abfd, command))
0a1b45a2 4969 return false;
3af9a47b
NC		 4970 break;
4971 case BFD_MACH_O_LC_LOAD_DYLINKER:
4972 case BFD_MACH_O_LC_ID_DYLINKER:
10be66a4 4973 case BFD_MACH_O_LC_DYLD_ENVIRONMENT:
452216ab 4974 if (!bfd_mach_o_read_dylinker (abfd, command))
0a1b45a2 4975 return false;
3af9a47b
NC		 4976 break;
4977 case BFD_MACH_O_LC_LOAD_DYLIB:
fbe383b9 4978 case BFD_MACH_O_LC_LAZY_LOAD_DYLIB:
3af9a47b
NC		 4979 case BFD_MACH_O_LC_ID_DYLIB:
4980 case BFD_MACH_O_LC_LOAD_WEAK_DYLIB:
046b007d 4981 case BFD_MACH_O_LC_REEXPORT_DYLIB:
73017762 4982 case BFD_MACH_O_LC_LOAD_UPWARD_DYLIB:
452216ab 4983 if (!bfd_mach_o_read_dylib (abfd, command))
0a1b45a2 4984 return false;
3af9a47b
NC		 4985 break;
4986 case BFD_MACH_O_LC_PREBOUND_DYLIB:
452216ab 4987 if (!bfd_mach_o_read_prebound_dylib (abfd, command))
0a1b45a2 4988 return false;
3af9a47b
NC		 4989 break;
4990 case BFD_MACH_O_LC_LOADFVMLIB:
4991 case BFD_MACH_O_LC_IDFVMLIB:
452216ab 4992 if (!bfd_mach_o_read_fvmlib (abfd, command))
0a1b45a2 4993 return false;
9f4a5bd1 4994 break;
3af9a47b
NC		 4995 case BFD_MACH_O_LC_IDENT:
4996 case BFD_MACH_O_LC_FVMFILE:
4997 case BFD_MACH_O_LC_PREPAGE:
4998 case BFD_MACH_O_LC_ROUTINES:
9b02d212 4999 case BFD_MACH_O_LC_ROUTINES_64:
046b007d 5000 break;
3af9a47b 5001 case BFD_MACH_O_LC_SUB_FRAMEWORK:
046b007d
TG		 5002 case BFD_MACH_O_LC_SUB_UMBRELLA:
5003 case BFD_MACH_O_LC_SUB_LIBRARY:
5004 case BFD_MACH_O_LC_SUB_CLIENT:
0c9b2b4c 5005 case BFD_MACH_O_LC_RPATH:
452216ab 5006 if (!bfd_mach_o_read_str (abfd, command))
0a1b45a2 5007 return false;
3af9a47b
NC		 5008 break;
5009 case BFD_MACH_O_LC_DYSYMTAB:
a4425a57 5010 if (!bfd_mach_o_read_dysymtab (abfd, command, filesize))
0a1b45a2 5011 return false;
3af9a47b 5012 break;
3af9a47b 5013 case BFD_MACH_O_LC_PREBIND_CKSUM:
452216ab 5014 if (!bfd_mach_o_read_prebind_cksum (abfd, command))
0a1b45a2 5015 return false;
7a79c514
TG		 5016 break;
5017 case BFD_MACH_O_LC_TWOLEVEL_HINTS:
452216ab 5018 if (!bfd_mach_o_read_twolevel_hints (abfd, command))
0a1b45a2 5019 return false;
3af9a47b 5020 break;
15e1c58a 5021 case BFD_MACH_O_LC_UUID:
452216ab 5022 if (!bfd_mach_o_read_uuid (abfd, command))
0a1b45a2 5023 return false;
15e1c58a
TG		 5024 break;
5025 case BFD_MACH_O_LC_CODE_SIGNATURE:
846b9259 5026 case BFD_MACH_O_LC_SEGMENT_SPLIT_INFO:
edbdea0e 5027 case BFD_MACH_O_LC_FUNCTION_STARTS:
1778ad74
TG		 5028 case BFD_MACH_O_LC_DATA_IN_CODE:
5029 case BFD_MACH_O_LC_DYLIB_CODE_SIGN_DRS:
47daa70f 5030 case BFD_MACH_O_LC_LINKER_OPTIMIZATION_HINT:
d768f160
SJ		 5031 case BFD_MACH_O_LC_DYLD_EXPORTS_TRIE:
5032 case BFD_MACH_O_LC_DYLD_CHAINED_FIXUPS:
452216ab 5033 if (!bfd_mach_o_read_linkedit (abfd, command))
0a1b45a2 5034 return false;
15e1c58a 5035 break;
fc55a902
TG		 5036 case BFD_MACH_O_LC_ENCRYPTION_INFO:
5037 if (!bfd_mach_o_read_encryption_info (abfd, command))
0a1b45a2 5038 return false;
fc55a902 5039 break;
47daa70f
TG		 5040 case BFD_MACH_O_LC_ENCRYPTION_INFO_64:
5041 if (!bfd_mach_o_read_encryption_info_64 (abfd, command))
0a1b45a2 5042 return false;
47daa70f 5043 break;
ad86f1fb 5044 case BFD_MACH_O_LC_DYLD_INFO:
452216ab 5045 if (!bfd_mach_o_read_dyld_info (abfd, command))
0a1b45a2 5046 return false;
ad86f1fb 5047 break;
edbdea0e
TG		 5048 case BFD_MACH_O_LC_VERSION_MIN_MACOSX:
5049 case BFD_MACH_O_LC_VERSION_MIN_IPHONEOS:
47daa70f 5050 case BFD_MACH_O_LC_VERSION_MIN_WATCHOS:
fc7b364a 5051 case BFD_MACH_O_LC_VERSION_MIN_TVOS:
edbdea0e 5052 if (!bfd_mach_o_read_version_min (abfd, command))
0a1b45a2 5053 return false;
edbdea0e 5054 break;
1778ad74
TG		 5055 case BFD_MACH_O_LC_MAIN:
5056 if (!bfd_mach_o_read_main (abfd, command))
0a1b45a2 5057 return false;
1778ad74
TG		 5058 break;
5059 case BFD_MACH_O_LC_SOURCE_VERSION:
5060 if (!bfd_mach_o_read_source_version (abfd, command))
0a1b45a2 5061 return false;
1778ad74 5062 break;
ddea148b 5063 case BFD_MACH_O_LC_LINKER_OPTIONS:
fc7b364a
RB		 5064 break;
5065 case BFD_MACH_O_LC_NOTE:
5066 if (!bfd_mach_o_read_note (abfd, command))
0a1b45a2 5067 return false;
fc7b364a 5068 break;
ddea148b 5069 case BFD_MACH_O_LC_BUILD_VERSION:
fc7b364a 5070 if (!bfd_mach_o_read_build_version (abfd, command))
0a1b45a2 5071 return false;
ddea148b 5072 break;
3af9a47b 5073 default:
86eafac0 5074 command->len = 0;
871b3ab2 5075 _bfd_error_handler (_("%pB: unknown load command %#x"),
d42c267e 5076 abfd, command->type);
0a1b45a2 5077 return false;
3af9a47b
NC		 5078 }
5079
0a1b45a2 5080 return true;
3af9a47b
NC		 5081}
5082
0a1b45a2 5083static bool
116c20d2 5084bfd_mach_o_flatten_sections (bfd *abfd)
3af9a47b 5085{
046b007d 5086 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
c9ffd2ea 5087 bfd_mach_o_load_command *cmd;
3af9a47b 5088 long csect = 0;
1f4361a7 5089 size_t amt;
a95a4550 5090
15e1c58a 5091 /* Count total number of sections. */
3af9a47b
NC		 5092 mdata->nsects = 0;
5093
c9ffd2ea 5094 for (cmd = mdata->first_command; cmd != NULL; cmd = cmd->next)
3af9a47b 5095 {
c9ffd2ea
TG		 5096 if (cmd->type == BFD_MACH_O_LC_SEGMENT
5097 || cmd->type == BFD_MACH_O_LC_SEGMENT_64)
3af9a47b 5098 {
c9ffd2ea 5099 bfd_mach_o_segment_command *seg = &cmd->command.segment;
e84d6fca 5100
3af9a47b
NC		 5101 mdata->nsects += seg->nsects;
5102 }
5103 }
5104
15e1c58a 5105 /* Allocate sections array. */
1f4361a7
AM		 5106 if (_bfd_mul_overflow (mdata->nsects, sizeof (bfd_mach_o_section *), &amt))
5107 {
5108 bfd_set_error (bfd_error_file_too_big);
0a1b45a2 5109 return false;
1f4361a7
AM		 5110 }
5111 mdata->sections = bfd_alloc (abfd, amt);
96d3b80f 5112 if (mdata->sections == NULL && mdata->nsects != 0)
0a1b45a2 5113 return false;
15e1c58a
TG		 5114
5115 /* Fill the array. */
3af9a47b
NC		 5116 csect = 0;
5117
c9ffd2ea 5118 for (cmd = mdata->first_command; cmd != NULL; cmd = cmd->next)
3af9a47b 5119 {
c9ffd2ea
TG		 5120 if (cmd->type == BFD_MACH_O_LC_SEGMENT
5121 || cmd->type == BFD_MACH_O_LC_SEGMENT_64)
3af9a47b 5122 {
c9ffd2ea 5123 bfd_mach_o_segment_command *seg = &cmd->command.segment;
07d6d2b8 5124 bfd_mach_o_section *sec;
3af9a47b
NC		 5125
5126 BFD_ASSERT (csect + seg->nsects <= mdata->nsects);
5127
07d6d2b8 5128 for (sec = seg->sect_head; sec != NULL; sec = sec->next)
f1bde64c 5129 mdata->sections[csect++] = sec;
3af9a47b
NC		 5130 }
5131 }
0a1b45a2 5132 return true;
3af9a47b
NC		 5133}
5134
0a1b45a2 5135static bool
116c20d2 5136bfd_mach_o_scan_start_address (bfd *abfd)
3af9a47b 5137{
046b007d 5138 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
c9ffd2ea
TG		 5139 bfd_mach_o_thread_command *thr = NULL;
5140 bfd_mach_o_load_command *cmd;
3af9a47b
NC		 5141 unsigned long i;
5142
c9ffd2ea
TG		 5143 for (cmd = mdata->first_command; cmd != NULL; cmd = cmd->next)
5144 if (cmd->type == BFD_MACH_O_LC_THREAD
5145 || cmd->type == BFD_MACH_O_LC_UNIXTHREAD)
afbb9e17 5146 {
07d6d2b8
AM		 5147 thr = &cmd->command.thread;
5148 break;
afbb9e17 5149 }
c9ffd2ea 5150 else if (cmd->type == BFD_MACH_O_LC_MAIN && mdata->nsects > 1)
c0fd7846 5151 {
c9ffd2ea 5152 bfd_mach_o_main_command *main_cmd = &cmd->command.main;
c0fd7846 5153 bfd_mach_o_section *text_sect = mdata->sections[0];
c9ffd2ea 5154
c0fd7846
TG		 5155 if (text_sect)
5156 {
5157 abfd->start_address = main_cmd->entryoff
5158 + (text_sect->addr - text_sect->offset);
0a1b45a2 5159 return true;
c0fd7846
TG		 5160 }
5161 }
3af9a47b 5162
5ee43bc4 5163 /* An object file has no start address, so do not fail if not found. */
c9ffd2ea 5164 if (thr == NULL)
0a1b45a2 5165 return true;
3af9a47b 5166
afbb9e17 5167 /* FIXME: create a subtarget hook ? */
c9ffd2ea 5168 for (i = 0; i < thr->nflavours; i++)
3af9a47b 5169 {
a95a4550 5170 if ((mdata->header.cputype == BFD_MACH_O_CPU_TYPE_I386)
c9ffd2ea 5171 && (thr->flavours[i].flavour == BFD_MACH_O_x86_THREAD_STATE32))
3af9a47b
NC		 5172 {
5173 unsigned char buf[4];
5174
c9ffd2ea 5175 if (bfd_seek (abfd, thr->flavours[i].offset + 40, SEEK_SET) != 0
226f9f4f 5176 || bfd_read (buf, 4, abfd) != 4)
0a1b45a2 5177 return false;
3af9a47b
NC		 5178
5179 abfd->start_address = bfd_h_get_32 (abfd, buf);
5180 }
a95a4550 5181 else if ((mdata->header.cputype == BFD_MACH_O_CPU_TYPE_POWERPC)
c9ffd2ea 5182 && (thr->flavours[i].flavour == BFD_MACH_O_PPC_THREAD_STATE))
3af9a47b
NC		 5183 {
5184 unsigned char buf[4];
5185
c9ffd2ea 5186 if (bfd_seek (abfd, thr->flavours[i].offset + 0, SEEK_SET) != 0
226f9f4f 5187 || bfd_read (buf, 4, abfd) != 4)
0a1b45a2 5188 return false;
3af9a47b
NC		 5189
5190 abfd->start_address = bfd_h_get_32 (abfd, buf);
5191 }
1e8a024a 5192 else if ((mdata->header.cputype == BFD_MACH_O_CPU_TYPE_POWERPC_64)
07d6d2b8
AM		 5193 && (thr->flavours[i].flavour == BFD_MACH_O_PPC_THREAD_STATE64))
5194 {
5195 unsigned char buf[8];
1e8a024a 5196
07d6d2b8 5197 if (bfd_seek (abfd, thr->flavours[i].offset + 0, SEEK_SET) != 0
226f9f4f 5198 || bfd_read (buf, 8, abfd) != 8)
0a1b45a2 5199 return false;
1e8a024a 5200
07d6d2b8
AM		 5201 abfd->start_address = bfd_h_get_64 (abfd, buf);
5202 }
1e8a024a 5203 else if ((mdata->header.cputype == BFD_MACH_O_CPU_TYPE_X86_64)
07d6d2b8
AM		 5204 && (thr->flavours[i].flavour == BFD_MACH_O_x86_THREAD_STATE64))
5205 {
5206 unsigned char buf[8];
1e8a024a 5207
07d6d2b8 5208 if (bfd_seek (abfd, thr->flavours[i].offset + (16 * 8), SEEK_SET) != 0
226f9f4f 5209 || bfd_read (buf, 8, abfd) != 8)
0a1b45a2 5210 return false;
1e8a024a 5211
07d6d2b8
AM		 5212 abfd->start_address = bfd_h_get_64 (abfd, buf);
5213 }
3af9a47b
NC		 5214 }
5215
0a1b45a2 5216 return true;
3af9a47b
NC		 5217}
5218
0a1b45a2 5219bool
42fa0891 5220bfd_mach_o_set_arch_mach (bfd *abfd,
07d6d2b8
AM		 5221 enum bfd_architecture arch,
5222 unsigned long machine)
42fa0891
TG		 5223{
5224 bfd_mach_o_backend_data *bed = bfd_mach_o_get_backend_data (abfd);
5225
5226 /* If this isn't the right architecture for this backend, and this
5227 isn't the generic backend, fail. */
5228 if (arch != bed->arch
5229 && arch != bfd_arch_unknown
5230 && bed->arch != bfd_arch_unknown)
0a1b45a2 5231 return false;
42fa0891
TG		 5232
5233 return bfd_default_set_arch_mach (abfd, arch, machine);
5234}
5235
0a1b45a2 5236static bool
116c20d2
NC		 5237bfd_mach_o_scan (bfd *abfd,
5238 bfd_mach_o_header *header,
5239 bfd_mach_o_data_struct *mdata)
3af9a47b
NC		 5240{
5241 unsigned int i;
4bb7a87e
JB		 5242 enum bfd_architecture cpu_type;
5243 unsigned long cpu_subtype;
1e8a024a
TG		 5244 unsigned int hdrsize;
5245
c2f09c75 5246 hdrsize = mach_o_wide_p (header) ?
154a1ee5 5247 BFD_MACH_O_HEADER_64_SIZE : BFD_MACH_O_HEADER_SIZE;
3af9a47b 5248
3af9a47b 5249 mdata->header = *header;
3af9a47b 5250
154a1ee5 5251 abfd->flags = abfd->flags & BFD_IN_MEMORY;
15e1c58a
TG		 5252 switch (header->filetype)
5253 {
5254 case BFD_MACH_O_MH_OBJECT:
5255 abfd->flags |= HAS_RELOC;
5256 break;
5257 case BFD_MACH_O_MH_EXECUTE:
5258 abfd->flags |= EXEC_P;
5259 break;
5260 case BFD_MACH_O_MH_DYLIB:
5261 case BFD_MACH_O_MH_BUNDLE:
5262 abfd->flags |= DYNAMIC;
5263 break;
5264 }
5265
3af9a47b
NC		 5266 abfd->tdata.mach_o_data = mdata;
5267
e84d6fca 5268 bfd_mach_o_convert_architecture (header->cputype, header->cpusubtype,
4bb7a87e
JB		 5269 &cpu_type, &cpu_subtype);
5270 if (cpu_type == bfd_arch_unknown)
3af9a47b 5271 {
4eca0228 5272 _bfd_error_handler
695344c0 5273 /* xgettext:c-format */
07d6d2b8
AM		 5274 (_("bfd_mach_o_scan: unknown architecture 0x%lx/0x%lx"),
5275 header->cputype, header->cpusubtype);
0a1b45a2 5276 return false;
3af9a47b
NC		 5277 }
5278
4bb7a87e 5279 bfd_set_arch_mach (abfd, cpu_type, cpu_subtype);
a95a4550 5280
3af9a47b
NC		 5281 if (header->ncmds != 0)
5282 {
c9ffd2ea 5283 bfd_mach_o_load_command *cmd;
1f4361a7 5284 size_t amt;
a4425a57
AM		 5285 ufile_ptr filesize = bfd_get_file_size (abfd);
5286
5287 if (filesize == 0)
5288 filesize = (ufile_ptr) -1;
c9ffd2ea
TG		 5289
5290 mdata->first_command = NULL;
5291 mdata->last_command = NULL;
64d29018 5292
a4425a57
AM		 5293 if (header->ncmds > (filesize - hdrsize) / BFD_MACH_O_LC_SIZE)
5294 {
5295 bfd_set_error (bfd_error_file_truncated);
0a1b45a2 5296 return false;
a4425a57 5297 }
1f4361a7
AM		 5298 if (_bfd_mul_overflow (header->ncmds,
5299 sizeof (bfd_mach_o_load_command), &amt))
5300 {
5301 bfd_set_error (bfd_error_file_too_big);
0a1b45a2 5302 return false;
1f4361a7
AM		 5303 }
5304 cmd = bfd_alloc (abfd, amt);
c9ffd2ea 5305 if (cmd == NULL)
0a1b45a2 5306 return false;
a95a4550 5307
3af9a47b
NC		 5308 for (i = 0; i < header->ncmds; i++)
5309 {
c9ffd2ea
TG		 5310 bfd_mach_o_load_command *cur = &cmd[i];
5311
5312 bfd_mach_o_append_command (abfd, cur);
3af9a47b
NC		 5313
5314 if (i == 0)
1e8a024a 5315 cur->offset = hdrsize;
3af9a47b
NC		 5316 else
5317 {
c9ffd2ea 5318 bfd_mach_o_load_command *prev = &cmd[i - 1];
3af9a47b
NC		 5319 cur->offset = prev->offset + prev->len;
5320 }
5321
a4425a57 5322 if (!bfd_mach_o_read_command (abfd, cur, filesize))
0a1b45a2 5323 return false;
a95a4550 5324 }
3af9a47b
NC		 5325 }
5326
c0fd7846 5327 /* Sections should be flatten before scanning start address. */
96d3b80f 5328 if (!bfd_mach_o_flatten_sections (abfd))
0a1b45a2 5329 return false;
c0fd7846 5330 if (!bfd_mach_o_scan_start_address (abfd))
0a1b45a2 5331 return false;
3af9a47b 5332
0a1b45a2 5333 return true;
3af9a47b
NC		 5334}
5335
0a1b45a2 5336bool
154a1ee5 5337bfd_mach_o_mkobject_init (bfd *abfd)
3af9a47b
NC		 5338{
5339 bfd_mach_o_data_struct *mdata = NULL;
5340
b30a5d18 5341 mdata = bfd_zalloc (abfd, sizeof (bfd_mach_o_data_struct));
3af9a47b 5342 if (mdata == NULL)
0a1b45a2 5343 return false;
3af9a47b
NC		 5344 abfd->tdata.mach_o_data = mdata;
5345
5346 mdata->header.magic = 0;
5347 mdata->header.cputype = 0;
5348 mdata->header.cpusubtype = 0;
5349 mdata->header.filetype = 0;
5350 mdata->header.ncmds = 0;
5351 mdata->header.sizeofcmds = 0;
5352 mdata->header.flags = 0;
5353 mdata->header.byteorder = BFD_ENDIAN_UNKNOWN;
c9ffd2ea
TG		 5354 mdata->first_command = NULL;
5355 mdata->last_command = NULL;
3af9a47b
NC		 5356 mdata->nsects = 0;
5357 mdata->sections = NULL;
4434114c 5358 mdata->dyn_reloc_cache = NULL;
3af9a47b 5359
0a1b45a2 5360 return true;
3af9a47b
NC		 5361}
5362
0a1b45a2 5363static bool
42fa0891
TG		 5364bfd_mach_o_gen_mkobject (bfd *abfd)
5365{
5366 bfd_mach_o_data_struct *mdata;
5367
5368 if (!bfd_mach_o_mkobject_init (abfd))
0a1b45a2 5369 return false;
42fa0891
TG		 5370
5371 mdata = bfd_mach_o_get_data (abfd);
5372 mdata->header.magic = BFD_MACH_O_MH_MAGIC;
5373 mdata->header.cputype = 0;
5374 mdata->header.cpusubtype = 0;
5375 mdata->header.byteorder = abfd->xvec->byteorder;
5376 mdata->header.version = 1;
5377
0a1b45a2 5378 return true;
42fa0891
TG		 5379}
5380
cb001c0d 5381bfd_cleanup
154a1ee5 5382bfd_mach_o_header_p (bfd *abfd,
47daa70f 5383 file_ptr hdr_off,
4bb7a87e
JB		 5384 bfd_mach_o_filetype file_type,
5385 bfd_mach_o_cpu_type cpu_type)
3af9a47b
NC		 5386{
5387 bfd_mach_o_header header;
c9ba0c87 5388 bfd_mach_o_data_struct *mdata;
3af9a47b 5389
47daa70f 5390 if (!bfd_mach_o_read_header (abfd, hdr_off, &header))
e84d6fca 5391 goto wrong;
3af9a47b 5392
e84d6fca
AM		 5393 if (! (header.byteorder == BFD_ENDIAN_BIG
5394 || header.byteorder == BFD_ENDIAN_LITTLE))
3af9a47b 5395 {
d42c267e
AM		 5396 _bfd_error_handler (_("unknown header byte-order value %#x"),
5397 header.byteorder);
e84d6fca 5398 goto wrong;
3af9a47b
NC		 5399 }
5400
e84d6fca
AM		 5401 if (! ((header.byteorder == BFD_ENDIAN_BIG
5402 && abfd->xvec->byteorder == BFD_ENDIAN_BIG
5403 && abfd->xvec->header_byteorder == BFD_ENDIAN_BIG)
5404 || (header.byteorder == BFD_ENDIAN_LITTLE
5405 && abfd->xvec->byteorder == BFD_ENDIAN_LITTLE
5406 && abfd->xvec->header_byteorder == BFD_ENDIAN_LITTLE)))
5407 goto wrong;
3af9a47b 5408
154a1ee5
TG		 5409 /* Check cputype and filetype.
5410 In case of wildcard, do not accept magics that are handled by existing
5411 targets. */
4bb7a87e 5412 if (cpu_type)
154a1ee5 5413 {
4bb7a87e 5414 if (header.cputype != cpu_type)
07d6d2b8 5415 goto wrong;
154a1ee5 5416 }
26954155
TG		 5417 else
5418 {
5419#ifndef BFD64
5420 /* Do not recognize 64 architectures if not configured for 64bit targets.
5421 This could happen only for generic targets. */
5422 if (mach_o_wide_p (&header))
5423 goto wrong;
5424#endif
5425 }
b22161d6 5426
4bb7a87e 5427 if (file_type)
154a1ee5 5428 {
4bb7a87e 5429 if (header.filetype != file_type)
07d6d2b8 5430 goto wrong;
154a1ee5
TG		 5431 }
5432 else
5433 {
5434 switch (header.filetype)
07d6d2b8
AM		 5435 {
5436 case BFD_MACH_O_MH_CORE:
5437 /* Handled by core_p */
5438 goto wrong;
5439 default:
5440 break;
5441 }
154a1ee5
TG		 5442 }
5443
c9ba0c87
AM		 5444 mdata = (bfd_mach_o_data_struct *) bfd_zalloc (abfd, sizeof (*mdata));
5445 if (mdata == NULL)
e84d6fca 5446 goto fail;
47daa70f 5447 mdata->hdr_offset = hdr_off;
3af9a47b 5448
c9ba0c87 5449 if (!bfd_mach_o_scan (abfd, &header, mdata))
e84d6fca 5450 goto wrong;
a95a4550 5451
cb001c0d 5452 return _bfd_no_cleanup;
e84d6fca
AM		 5453
5454 wrong:
5455 bfd_set_error (bfd_error_wrong_format);
5456
5457 fail:
e84d6fca 5458 return NULL;
3af9a47b
NC		 5459}
5460
cb001c0d 5461static bfd_cleanup
154a1ee5 5462bfd_mach_o_gen_object_p (bfd *abfd)
3af9a47b 5463{
47daa70f 5464 return bfd_mach_o_header_p (abfd, 0, 0, 0);
154a1ee5 5465}
e84d6fca 5466
cb001c0d 5467static bfd_cleanup
154a1ee5
TG		 5468bfd_mach_o_gen_core_p (bfd *abfd)
5469{
47daa70f 5470 return bfd_mach_o_header_p (abfd, 0, BFD_MACH_O_MH_CORE, 0);
3af9a47b
NC		 5471}
5472
3cc27770
TG		 5473/* Return the base address of ABFD, ie the address at which the image is
5474 mapped. The possible initial pagezero is ignored. */
5475
5476bfd_vma
5477bfd_mach_o_get_base_address (bfd *abfd)
5478{
5479 bfd_mach_o_data_struct *mdata;
c9ffd2ea 5480 bfd_mach_o_load_command *cmd;
3cc27770
TG		 5481
5482 /* Check for Mach-O. */
5483 if (!bfd_mach_o_valid (abfd))
5484 return 0;
5485 mdata = bfd_mach_o_get_data (abfd);
5486
c9ffd2ea 5487 for (cmd = mdata->first_command; cmd != NULL; cmd = cmd->next)
3cc27770 5488 {
3cc27770
TG		 5489 if ((cmd->type == BFD_MACH_O_LC_SEGMENT
5490 || cmd->type == BFD_MACH_O_LC_SEGMENT_64))
5491 {
5492 struct bfd_mach_o_segment_command *segcmd = &cmd->command.segment;
5493
5494 if (segcmd->initprot != 0)
5495 return segcmd->vmaddr;
5496 }
5497 }
5498 return 0;
5499}
5500
3af9a47b
NC		 5501typedef struct mach_o_fat_archentry
5502{
5503 unsigned long cputype;
5504 unsigned long cpusubtype;
5505 unsigned long offset;
5506 unsigned long size;
5507 unsigned long align;
3af9a47b
NC		 5508} mach_o_fat_archentry;
5509
5510typedef struct mach_o_fat_data_struct
5511{
5512 unsigned long magic;
5513 unsigned long nfat_arch;
5514 mach_o_fat_archentry *archentries;
5515} mach_o_fat_data_struct;
5516
8d783d5e
AM		 5517/* Check for overlapping archive elements. Note that we can't allow
5518 multiple elements at the same offset even if one is empty, because
5519 bfd_mach_o_fat_openr_next_archived_file assume distinct offsets. */
5520static bool
5521overlap_previous (const mach_o_fat_archentry *elt, unsigned long i)
5522{
5523 unsigned long j = i;
5524 while (j-- != 0)
5525 if (elt[i].offset == elt[j].offset
5526 || (elt[i].offset > elt[j].offset
5527 ? elt[i].offset - elt[j].offset < elt[j].size
5528 : elt[j].offset - elt[i].offset < elt[i].size))
5529 return true;
5530 return false;
5531}
5532
cb001c0d 5533bfd_cleanup
47daa70f 5534bfd_mach_o_fat_archive_p (bfd *abfd)
3af9a47b 5535{
e84d6fca 5536 mach_o_fat_data_struct *adata = NULL;
46d1c23b 5537 struct mach_o_fat_header_external hdr;
3af9a47b 5538 unsigned long i;
1f4361a7 5539 size_t amt;
c908dea2 5540 ufile_ptr filesize;
3af9a47b 5541
c2f09c75 5542 if (bfd_seek (abfd, 0, SEEK_SET) != 0
226f9f4f 5543 || bfd_read (&hdr, sizeof (hdr), abfd) != sizeof (hdr))
e84d6fca 5544 goto error;
3af9a47b 5545
116c20d2 5546 adata = bfd_alloc (abfd, sizeof (mach_o_fat_data_struct));
3af9a47b 5547 if (adata == NULL)
e84d6fca 5548 goto error;
a95a4550 5549
46d1c23b
TG		 5550 adata->magic = bfd_getb32 (hdr.magic);
5551 adata->nfat_arch = bfd_getb32 (hdr.nfat_arch);
3af9a47b 5552 if (adata->magic != 0xcafebabe)
e84d6fca 5553 goto error;
27cc28f9
AS		 5554 /* Avoid matching Java bytecode files, which have the same magic number.
5555 In the Java bytecode file format this field contains the JVM version,
5556 which starts at 43.0. */
5557 if (adata->nfat_arch > 30)
5558 goto error;
3af9a47b 5559
1f4361a7
AM		 5560 if (_bfd_mul_overflow (adata->nfat_arch,
5561 sizeof (mach_o_fat_archentry), &amt))
5562 {
5563 bfd_set_error (bfd_error_file_too_big);
5564 goto error;
5565 }
5566 adata->archentries = bfd_alloc (abfd, amt);
3af9a47b 5567 if (adata->archentries == NULL)
e84d6fca 5568 goto error;
3af9a47b 5569
c908dea2 5570 filesize = bfd_get_file_size (abfd);
3af9a47b
NC		 5571 for (i = 0; i < adata->nfat_arch; i++)
5572 {
46d1c23b 5573 struct mach_o_fat_arch_external arch;
226f9f4f 5574 if (bfd_read (&arch, sizeof (arch), abfd) != sizeof (arch))
e84d6fca 5575 goto error;
46d1c23b
TG		 5576 adata->archentries[i].cputype = bfd_getb32 (arch.cputype);
5577 adata->archentries[i].cpusubtype = bfd_getb32 (arch.cpusubtype);
5578 adata->archentries[i].offset = bfd_getb32 (arch.offset);
5579 adata->archentries[i].size = bfd_getb32 (arch.size);
5580 adata->archentries[i].align = bfd_getb32 (arch.align);
8d783d5e
AM		 5581 if ((filesize != 0
5582 && (adata->archentries[i].offset > filesize
5583 || (adata->archentries[i].size
5584 > filesize - adata->archentries[i].offset)))
5585 || (adata->archentries[i].offset
5586 < sizeof (hdr) + adata->nfat_arch * sizeof (arch))
5587 || overlap_previous (adata->archentries, i))
c908dea2
AM		 5588 {
5589 bfd_release (abfd, adata);
5590 bfd_set_error (bfd_error_malformed_archive);
5591 return NULL;
5592 }
3af9a47b
NC		 5593 }
5594
5595 abfd->tdata.mach_o_fat_data = adata;
64d29018 5596
cb001c0d 5597 return _bfd_no_cleanup;
e84d6fca
AM		 5598
5599 error:
5600 if (adata != NULL)
5601 bfd_release (abfd, adata);
5602 bfd_set_error (bfd_error_wrong_format);
5603 return NULL;
3af9a47b
NC		 5604}
5605
a4e241ca
TG		 5606/* Set the filename for a fat binary member ABFD, whose bfd architecture is
5607 ARCH_TYPE/ARCH_SUBTYPE and corresponding entry in header is ENTRY.
5608 Set arelt_data and origin fields too. */
5609
0a1b45a2 5610static bool
a4e241ca 5611bfd_mach_o_fat_member_init (bfd *abfd,
07d6d2b8
AM		 5612 enum bfd_architecture arch_type,
5613 unsigned long arch_subtype,
5614 mach_o_fat_archentry *entry)
a4e241ca
TG		 5615{
5616 struct areltdata *areltdata;
5617 /* Create the member filename. Use ARCH_NAME. */
5618 const bfd_arch_info_type *ap = bfd_lookup_arch (arch_type, arch_subtype);
7b958a48 5619 const char *filename;
a4e241ca
TG		 5620
5621 if (ap)
5622 {
5623 /* Use the architecture name if known. */
7b958a48 5624 filename = bfd_set_filename (abfd, ap->printable_name);
a4e241ca
TG		 5625 }
5626 else
5627 {
5628 /* Forge a uniq id. */
7b958a48
AM		 5629 char buf[2 + 8 + 1 + 2 + 8 + 1];
5630 snprintf (buf, sizeof (buf), "0x%lx-0x%lx",
07d6d2b8 5631 entry->cputype, entry->cpusubtype);
7b958a48 5632 filename = bfd_set_filename (abfd, buf);
a4e241ca 5633 }
7b958a48 5634 if (!filename)
0a1b45a2 5635 return false;
a4e241ca 5636
06e7acd7 5637 areltdata = bfd_zmalloc (sizeof (struct areltdata));
90d92a63 5638 if (areltdata == NULL)
0a1b45a2 5639 return false;
a4e241ca
TG		 5640 areltdata->parsed_size = entry->size;
5641 abfd->arelt_data = areltdata;
5642 abfd->iostream = NULL;
5643 abfd->origin = entry->offset;
0a1b45a2 5644 return true;
a4e241ca
TG		 5645}
5646
3af9a47b 5647bfd *
47daa70f 5648bfd_mach_o_fat_openr_next_archived_file (bfd *archive, bfd *prev)
3af9a47b 5649{
e84d6fca 5650 mach_o_fat_data_struct *adata;
3af9a47b
NC		 5651 mach_o_fat_archentry *entry = NULL;
5652 unsigned long i;
15e1c58a 5653 bfd *nbfd;
15e1c58a
TG		 5654 enum bfd_architecture arch_type;
5655 unsigned long arch_subtype;
3af9a47b 5656
e84d6fca 5657 adata = (mach_o_fat_data_struct *) archive->tdata.mach_o_fat_data;
3af9a47b
NC		 5658 BFD_ASSERT (adata != NULL);
5659
5660 /* Find index of previous entry. */
5661 if (prev == NULL)
a4e241ca
TG		 5662 {
5663 /* Start at first one. */
5664 i = 0;
5665 }
3af9a47b
NC		 5666 else
5667 {
a4e241ca 5668 /* Find index of PREV. */
3af9a47b
NC		 5669 for (i = 0; i < adata->nfat_arch; i++)
5670 {
15e1c58a 5671 if (adata->archentries[i].offset == prev->origin)
3af9a47b
NC		 5672 break;
5673 }
5674
5675 if (i == adata->nfat_arch)
5676 {
5677 /* Not found. */
5678 bfd_set_error (bfd_error_bad_value);
a95a4550 5679 return NULL;
3af9a47b 5680 }
a4e241ca
TG		 5681
5682 /* Get next entry. */
5683 i++;
5684 }
a95a4550 5685
3af9a47b
NC		 5686 if (i >= adata->nfat_arch)
5687 {
5688 bfd_set_error (bfd_error_no_more_archived_files);
5689 return NULL;
5690 }
5691
5692 entry = &adata->archentries[i];
15e1c58a
TG		 5693 nbfd = _bfd_new_bfd_contained_in (archive);
5694 if (nbfd == NULL)
5695 return NULL;
5696
15e1c58a
TG		 5697 bfd_mach_o_convert_architecture (entry->cputype, entry->cpusubtype,
5698 &arch_type, &arch_subtype);
846b9259 5699
90d92a63
AM		 5700 if (!bfd_mach_o_fat_member_init (nbfd, arch_type, arch_subtype, entry))
5701 {
5702 bfd_close (nbfd);
5703 return NULL;
5704 }
a4e241ca 5705
846b9259 5706 bfd_set_arch_mach (nbfd, arch_type, arch_subtype);
3af9a47b 5707
15e1c58a 5708 return nbfd;
3af9a47b
NC		 5709}
5710
15bbba8d
TG		 5711/* Analogous to stat call. */
5712
5713static int
5714bfd_mach_o_fat_stat_arch_elt (bfd *abfd, struct stat *buf)
5715{
5716 if (abfd->arelt_data == NULL)
5717 {
5718 bfd_set_error (bfd_error_invalid_operation);
5719 return -1;
5720 }
5721
5722 buf->st_mtime = 0;
5723 buf->st_uid = 0;
5724 buf->st_gid = 0;
5725 buf->st_mode = 0644;
5726 buf->st_size = arelt_size (abfd);
5727
5728 return 0;
5729}
5730
846b9259
TG		 5731/* If ABFD format is FORMAT and architecture is ARCH, return it.
5732 If ABFD is a fat image containing a member that corresponds to FORMAT
5733 and ARCH, returns it.
5734 In other case, returns NULL.
5735 This function allows transparent uses of fat images. */
a4e241ca 5736
846b9259
TG		 5737bfd *
5738bfd_mach_o_fat_extract (bfd *abfd,
5739 bfd_format format,
5740 const bfd_arch_info_type *arch)
5741{
5742 bfd *res;
5743 mach_o_fat_data_struct *adata;
5744 unsigned int i;
5745
5746 if (bfd_check_format (abfd, format))
5747 {
5748 if (bfd_get_arch_info (abfd) == arch)
5749 return abfd;
5750 return NULL;
5751 }
5752 if (!bfd_check_format (abfd, bfd_archive)
5753 || abfd->xvec != &mach_o_fat_vec)
5754 return NULL;
c2f09c75 5755
846b9259
TG		 5756 /* This is a Mach-O fat image. */
5757 adata = (mach_o_fat_data_struct *) abfd->tdata.mach_o_fat_data;
5758 BFD_ASSERT (adata != NULL);
5759
5760 for (i = 0; i < adata->nfat_arch; i++)
5761 {
5762 struct mach_o_fat_archentry *e = &adata->archentries[i];
5763 enum bfd_architecture cpu_type;
5764 unsigned long cpu_subtype;
5765
5766 bfd_mach_o_convert_architecture (e->cputype, e->cpusubtype,
5767 &cpu_type, &cpu_subtype);
5768 if (cpu_type != arch->arch || cpu_subtype != arch->mach)
5769 continue;
5770
5771 /* The architecture is found. */
5772 res = _bfd_new_bfd_contained_in (abfd);
5773 if (res == NULL)
5774 return NULL;
5775
90d92a63
AM		 5776 if (bfd_mach_o_fat_member_init (res, cpu_type, cpu_subtype, e)
5777 && bfd_check_format (res, format))
846b9259
TG		 5778 {
5779 BFD_ASSERT (bfd_get_arch_info (res) == arch);
5780 return res;
5781 }
5782 bfd_close (res);
5783 return NULL;
5784 }
5785
5786 return NULL;
5787}
5788
0a1b45a2 5789static bool
eac61af6
TT		 5790bfd_mach_o_fat_close_and_cleanup (bfd *abfd)
5791{
5792 _bfd_unlink_from_archive_parent (abfd);
0a1b45a2 5793 return true;
eac61af6
TT		 5794}
5795
3af9a47b 5796int
116c20d2
NC		 5797bfd_mach_o_lookup_command (bfd *abfd,
5798 bfd_mach_o_load_command_type type,
5799 bfd_mach_o_load_command **mcommand)
3af9a47b 5800{
c9ffd2ea
TG		 5801 struct mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
5802 struct bfd_mach_o_load_command *cmd;
5803 unsigned int num;
3af9a47b 5804
c9ffd2ea 5805 BFD_ASSERT (mdata != NULL);
3af9a47b
NC		 5806 BFD_ASSERT (mcommand != NULL);
5807
5808 num = 0;
c9ffd2ea 5809 for (cmd = mdata->first_command; cmd != NULL; cmd = cmd->next)
3af9a47b 5810 {
3af9a47b
NC		 5811 if (cmd->type != type)
5812 continue;
5813
5814 if (num == 0)
c9ffd2ea 5815 *mcommand = cmd;
3af9a47b
NC		 5816 num++;
5817 }
5818
3af9a47b
NC		 5819 return num;
5820}
5821
5822unsigned long
116c20d2 5823bfd_mach_o_stack_addr (enum bfd_mach_o_cpu_type type)
3af9a47b
NC		 5824{
5825 switch (type)
5826 {
5827 case BFD_MACH_O_CPU_TYPE_MC680x0:
5828 return 0x04000000;
3af9a47b
NC		 5829 case BFD_MACH_O_CPU_TYPE_POWERPC:
5830 return 0xc0000000;
5831 case BFD_MACH_O_CPU_TYPE_I386:
5832 return 0xc0000000;
5833 case BFD_MACH_O_CPU_TYPE_SPARC:
5834 return 0xf0000000;
3af9a47b 5835 case BFD_MACH_O_CPU_TYPE_HPPA:
e84d6fca 5836 return 0xc0000000 - 0x04000000;
3af9a47b
NC		 5837 default:
5838 return 0;
5839 }
5840}
5841
ab76eeaf
IS		 5842/* The following two tables should be kept, as far as possible, in order of
5843 most frequently used entries to optimize their use from gas. */
5844
c5012cd8 5845const bfd_mach_o_xlat_name bfd_mach_o_section_type_name[] =
046b007d
TG		 5846{
5847 { "regular", BFD_MACH_O_S_REGULAR},
ab76eeaf 5848 { "coalesced", BFD_MACH_O_S_COALESCED},
046b007d
TG		 5849 { "zerofill", BFD_MACH_O_S_ZEROFILL},
5850 { "cstring_literals", BFD_MACH_O_S_CSTRING_LITERALS},
5851 { "4byte_literals", BFD_MACH_O_S_4BYTE_LITERALS},
5852 { "8byte_literals", BFD_MACH_O_S_8BYTE_LITERALS},
ab76eeaf 5853 { "16byte_literals", BFD_MACH_O_S_16BYTE_LITERALS},
046b007d 5854 { "literal_pointers", BFD_MACH_O_S_LITERAL_POINTERS},
046b007d
TG		 5855 { "mod_init_func_pointers", BFD_MACH_O_S_MOD_INIT_FUNC_POINTERS},
5856 { "mod_fini_func_pointers", BFD_MACH_O_S_MOD_FINI_FUNC_POINTERS},
046b007d
TG		 5857 { "gb_zerofill", BFD_MACH_O_S_GB_ZEROFILL},
5858 { "interposing", BFD_MACH_O_S_INTERPOSING},
046b007d 5859 { "dtrace_dof", BFD_MACH_O_S_DTRACE_DOF},
ab76eeaf
IS		 5860 { "non_lazy_symbol_pointers", BFD_MACH_O_S_NON_LAZY_SYMBOL_POINTERS},
5861 { "lazy_symbol_pointers", BFD_MACH_O_S_LAZY_SYMBOL_POINTERS},
a4551119 5862 { "symbol_stubs", BFD_MACH_O_S_SYMBOL_STUBS},
046b007d
TG		 5863 { "lazy_dylib_symbol_pointers", BFD_MACH_O_S_LAZY_DYLIB_SYMBOL_POINTERS},
5864 { NULL, 0}
5865};
5866
c5012cd8 5867const bfd_mach_o_xlat_name bfd_mach_o_section_attribute_name[] =
046b007d 5868{
ab76eeaf
IS		 5869 { "pure_instructions", BFD_MACH_O_S_ATTR_PURE_INSTRUCTIONS },
5870 { "some_instructions", BFD_MACH_O_S_ATTR_SOME_INSTRUCTIONS },
046b007d
TG		 5871 { "loc_reloc", BFD_MACH_O_S_ATTR_LOC_RELOC },
5872 { "ext_reloc", BFD_MACH_O_S_ATTR_EXT_RELOC },
046b007d 5873 { "debug", BFD_MACH_O_S_ATTR_DEBUG },
046b007d
TG		 5874 { "live_support", BFD_MACH_O_S_ATTR_LIVE_SUPPORT },
5875 { "no_dead_strip", BFD_MACH_O_S_ATTR_NO_DEAD_STRIP },
5876 { "strip_static_syms", BFD_MACH_O_S_ATTR_STRIP_STATIC_SYMS },
5877 { "no_toc", BFD_MACH_O_S_ATTR_NO_TOC },
a4551119 5878 { "self_modifying_code", BFD_MACH_O_S_SELF_MODIFYING_CODE },
ab76eeaf 5879 { "modifying_code", BFD_MACH_O_S_SELF_MODIFYING_CODE },
046b007d
TG		 5880 { NULL, 0}
5881};
5882
a4551119 5883/* Get the section type from NAME. Return 256 if NAME is unknown. */
53d58d96
TG		 5884
5885unsigned int
ab76eeaf 5886bfd_mach_o_get_section_type_from_name (bfd *abfd, const char *name)
53d58d96 5887{
afbb9e17 5888 const bfd_mach_o_xlat_name *x;
ab76eeaf 5889 bfd_mach_o_backend_data *bed = bfd_mach_o_get_backend_data (abfd);
53d58d96
TG		 5890
5891 for (x = bfd_mach_o_section_type_name; x->name; x++)
5892 if (strcmp (x->name, name) == 0)
ab76eeaf
IS		 5893 {
5894 /* We found it... does the target support it? */
5895 if (bed->bfd_mach_o_section_type_valid_for_target == NULL
5896 || bed->bfd_mach_o_section_type_valid_for_target (x->val))
5897 return x->val; /* OK. */
5898 else
5899 break; /* Not supported. */
5900 }
a4551119
TG		 5901 /* Maximum section ID = 0xff. */
5902 return 256;
53d58d96
TG		 5903}
5904
5905/* Get the section attribute from NAME. Return -1 if NAME is unknown. */
5906
5907unsigned int
5908bfd_mach_o_get_section_attribute_from_name (const char *name)
5909{
afbb9e17 5910 const bfd_mach_o_xlat_name *x;
53d58d96
TG		 5911
5912 for (x = bfd_mach_o_section_attribute_name; x->name; x++)
5913 if (strcmp (x->name, name) == 0)
5914 return x->val;
5915 return (unsigned int)-1;
5916}
5917
3af9a47b 5918int
116c20d2
NC		 5919bfd_mach_o_core_fetch_environment (bfd *abfd,
5920 unsigned char **rbuf,
5921 unsigned int *rlen)
3af9a47b 5922{
046b007d 5923 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
3af9a47b 5924 unsigned long stackaddr = bfd_mach_o_stack_addr (mdata->header.cputype);
c9ffd2ea 5925 bfd_mach_o_load_command *cmd;
3af9a47b 5926
c9ffd2ea 5927 for (cmd = mdata->first_command; cmd != NULL; cmd = cmd->next)
3af9a47b 5928 {
c9ffd2ea 5929 bfd_mach_o_segment_command *seg;
3af9a47b 5930
c9ffd2ea 5931 if (cmd->type != BFD_MACH_O_LC_SEGMENT)
3af9a47b
NC		 5932 continue;
5933
c9ffd2ea 5934 seg = &cmd->command.segment;
3af9a47b
NC		 5935
5936 if ((seg->vmaddr + seg->vmsize) == stackaddr)
5937 {
5938 unsigned long start = seg->fileoff;
5939 unsigned long end = seg->fileoff + seg->filesize;
5940 unsigned char *buf = bfd_malloc (1024);
5941 unsigned long size = 1024;
5942
7a0fb7be
NC		 5943 if (buf == NULL)
5944 return -1;
3af9a47b
NC		 5945 for (;;)
5946 {
5947 bfd_size_type nread = 0;
5948 unsigned long offset;
5949 int found_nonnull = 0;
5950
5951 if (size > (end - start))
5952 size = (end - start);
5953
515ef31d
NC		 5954 buf = bfd_realloc_or_free (buf, size);
5955 if (buf == NULL)
5956 return -1;
c2f09c75
TG		 5957
5958 if (bfd_seek (abfd, end - size, SEEK_SET) != 0)
07d6d2b8
AM		 5959 {
5960 free (buf);
5961 return -1;
5962 }
c2f09c75 5963
226f9f4f 5964 nread = bfd_read (buf, size, abfd);
a95a4550 5965
3af9a47b 5966 if (nread != size)
515ef31d
NC		 5967 {
5968 free (buf);
5969 return -1;
5970 }
a95a4550 5971
3af9a47b
NC		 5972 for (offset = 4; offset <= size; offset += 4)
5973 {
e84d6fca 5974 unsigned long val;
3af9a47b 5975
d1fbc3ba
NC		 5976 val = bfd_get_32(abfd, buf + size - offset);
5977
3af9a47b
NC		 5978 if (! found_nonnull)
5979 {
5980 if (val != 0)
5981 found_nonnull = 1;
5982 }
5983 else if (val == 0x0)
5984 {
e84d6fca
AM		 5985 unsigned long bottom;
5986 unsigned long top;
3af9a47b 5987
e84d6fca
AM		 5988 bottom = seg->fileoff + seg->filesize - offset;
5989 top = seg->fileoff + seg->filesize - 4;
3af9a47b 5990 *rbuf = bfd_malloc (top - bottom);
7a0fb7be
NC		 5991 if (*rbuf == NULL)
5992 return -1;
3af9a47b
NC		 5993 *rlen = top - bottom;
5994
5995 memcpy (*rbuf, buf + size - *rlen, *rlen);
515ef31d 5996 free (buf);
3af9a47b
NC		 5997 return 0;
5998 }
5999 }
6000
6001 if (size == (end - start))
6002 break;
6003
6004 size *= 2;
6005 }
515ef31d
NC		 6006
6007 free (buf);
3af9a47b
NC		 6008 }
6009 }
6010
6011 return -1;
6012}
6013
6014char *
116c20d2 6015bfd_mach_o_core_file_failing_command (bfd *abfd)
3af9a47b
NC		 6016{
6017 unsigned char *buf = NULL;
6018 unsigned int len = 0;
452216ab 6019 int ret;
3af9a47b
NC		 6020
6021 ret = bfd_mach_o_core_fetch_environment (abfd, &buf, &len);
6022 if (ret < 0)
6023 return NULL;
6024
f075ee0c 6025 return (char *) buf;
3af9a47b
NC		 6026}
6027
6028int
116c20d2 6029bfd_mach_o_core_file_failing_signal (bfd *abfd ATTRIBUTE_UNUSED)
3af9a47b
NC		 6030{
6031 return 0;
6032}
6033
2ca7691a
TG		 6034static bfd_mach_o_uuid_command *
6035bfd_mach_o_lookup_uuid_command (bfd *abfd)
6036{
09fe2662 6037 bfd_mach_o_load_command *uuid_cmd = NULL;
2ca7691a 6038 int ncmd = bfd_mach_o_lookup_command (abfd, BFD_MACH_O_LC_UUID, &uuid_cmd);
09fe2662 6039 if (ncmd != 1 || uuid_cmd == NULL)
0a1b45a2 6040 return false;
2ca7691a
TG		 6041 return &uuid_cmd->command.uuid;
6042}
6043
6044/* Return true if ABFD is a dSYM file and its UUID matches UUID_CMD. */
6045
0a1b45a2 6046static bool
2ca7691a
TG		 6047bfd_mach_o_dsym_for_uuid_p (bfd *abfd, const bfd_mach_o_uuid_command *uuid_cmd)
6048{
6049 bfd_mach_o_uuid_command *dsym_uuid_cmd;
6050
6051 BFD_ASSERT (abfd);
6052 BFD_ASSERT (uuid_cmd);
6053
6054 if (!bfd_check_format (abfd, bfd_object))
0a1b45a2 6055 return false;
2ca7691a
TG		 6056
6057 if (bfd_get_flavour (abfd) != bfd_target_mach_o_flavour
6058 || bfd_mach_o_get_data (abfd) == NULL
6059 || bfd_mach_o_get_data (abfd)->header.filetype != BFD_MACH_O_MH_DSYM)
0a1b45a2 6060 return false;
2ca7691a
TG		 6061
6062 dsym_uuid_cmd = bfd_mach_o_lookup_uuid_command (abfd);
6063 if (dsym_uuid_cmd == NULL)
0a1b45a2 6064 return false;
2ca7691a
TG		 6065
6066 if (memcmp (uuid_cmd->uuid, dsym_uuid_cmd->uuid,
07d6d2b8 6067 sizeof (uuid_cmd->uuid)) != 0)
0a1b45a2 6068 return false;
2ca7691a 6069
0a1b45a2 6070 return true;
2ca7691a
TG		 6071}
6072
6073/* Find a BFD in DSYM_FILENAME which matches ARCH and UUID_CMD.
6074 The caller is responsible for closing the returned BFD object and
6075 its my_archive if the returned BFD is in a fat dSYM. */
6076
6077static bfd *
6078bfd_mach_o_find_dsym (const char *dsym_filename,
07d6d2b8
AM		 6079 const bfd_mach_o_uuid_command *uuid_cmd,
6080 const bfd_arch_info_type *arch)
2ca7691a
TG		 6081{
6082 bfd *base_dsym_bfd, *dsym_bfd;
6083
6084 BFD_ASSERT (uuid_cmd);
6085
6086 base_dsym_bfd = bfd_openr (dsym_filename, NULL);
6087 if (base_dsym_bfd == NULL)
6088 return NULL;
6089
6090 dsym_bfd = bfd_mach_o_fat_extract (base_dsym_bfd, bfd_object, arch);
6091 if (bfd_mach_o_dsym_for_uuid_p (dsym_bfd, uuid_cmd))
6092 return dsym_bfd;
6093
6094 bfd_close (dsym_bfd);
6095 if (base_dsym_bfd != dsym_bfd)
6096 bfd_close (base_dsym_bfd);
6097
6098 return NULL;
6099}
6100
6101/* Return a BFD created from a dSYM file for ABFD.
6102 The caller is responsible for closing the returned BFD object, its
6103 filename, and its my_archive if the returned BFD is in a fat dSYM. */
6104
6105static bfd *
6106bfd_mach_o_follow_dsym (bfd *abfd)
6107{
6108 char *dsym_filename;
6109 bfd_mach_o_uuid_command *uuid_cmd;
6110 bfd *dsym_bfd, *base_bfd = abfd;
6111 const char *base_basename;
6112
6113 if (abfd == NULL || bfd_get_flavour (abfd) != bfd_target_mach_o_flavour)
6114 return NULL;
6115
b0cffb47 6116 if (abfd->my_archive && !bfd_is_thin_archive (abfd->my_archive))
2ca7691a
TG		 6117 base_bfd = abfd->my_archive;
6118 /* BFD may have been opened from a stream. */
765cf5f6 6119 if (bfd_get_filename (base_bfd) == NULL)
2ca7691a
TG		 6120 {
6121 bfd_set_error (bfd_error_invalid_operation);
6122 return NULL;
6123 }
765cf5f6 6124 base_basename = lbasename (bfd_get_filename (base_bfd));
2ca7691a
TG		 6125
6126 uuid_cmd = bfd_mach_o_lookup_uuid_command (abfd);
6127 if (uuid_cmd == NULL)
6128 return NULL;
6129
6130 /* TODO: We assume the DWARF file has the same as the binary's.
6131 It seems apple's GDB checks all files in the dSYM bundle directory.
6132 http://opensource.apple.com/source/gdb/gdb-1708/src/gdb/macosx/macosx-tdep.c
6133 */
765cf5f6 6134 dsym_filename = (char *)bfd_malloc (strlen (bfd_get_filename (base_bfd))
07d6d2b8
AM		 6135 + strlen (dsym_subdir) + 1
6136 + strlen (base_basename) + 1);
7a0fb7be
NC		 6137 if (dsym_filename == NULL)
6138 return NULL;
6139
2ca7691a 6140 sprintf (dsym_filename, "%s%s/%s",
765cf5f6 6141 bfd_get_filename (base_bfd), dsym_subdir, base_basename);
2ca7691a
TG		 6142
6143 dsym_bfd = bfd_mach_o_find_dsym (dsym_filename, uuid_cmd,
07d6d2b8 6144 bfd_get_arch_info (abfd));
2ca7691a
TG		 6145 if (dsym_bfd == NULL)
6146 free (dsym_filename);
6147
6148 return dsym_bfd;
6149}
6150
0a1b45a2 6151bool
d9071b0c 6152bfd_mach_o_find_nearest_line (bfd *abfd,
d9071b0c 6153 asymbol **symbols,
fb167eb2 6154 asection *section,
d9071b0c
TG		 6155 bfd_vma offset,
6156 const char **filename_ptr,
6157 const char **functionname_ptr,
fb167eb2
AM		 6158 unsigned int *line_ptr,
6159 unsigned int *discriminator_ptr)
d9071b0c
TG		 6160{
6161 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
2ca7691a 6162 if (mdata == NULL)
0a1b45a2 6163 return false;
2ca7691a
TG		 6164 switch (mdata->header.filetype)
6165 {
6166 case BFD_MACH_O_MH_OBJECT:
6167 break;
6168 case BFD_MACH_O_MH_EXECUTE:
6169 case BFD_MACH_O_MH_DYLIB:
6170 case BFD_MACH_O_MH_BUNDLE:
6171 case BFD_MACH_O_MH_KEXT_BUNDLE:
6172 if (mdata->dwarf2_find_line_info == NULL)
07d6d2b8
AM		 6173 {
6174 mdata->dsym_bfd = bfd_mach_o_follow_dsym (abfd);
6175 /* When we couldn't find dSYM for this binary, we look for
6176 the debug information in the binary itself. In this way,
6177 we won't try finding separated dSYM again because
6178 mdata->dwarf2_find_line_info will be filled. */
6179 if (! mdata->dsym_bfd)
6180 break;
6181 if (! _bfd_dwarf2_slurp_debug_info (abfd, mdata->dsym_bfd,
6182 dwarf_debug_sections, symbols,
6183 &mdata->dwarf2_find_line_info,
0a1b45a2
AM		 6184 false))
6185 return false;
07d6d2b8 6186 }
2ca7691a
TG		 6187 break;
6188 default:
0a1b45a2 6189 return false;
2ca7691a 6190 }
fb167eb2
AM		 6191 return _bfd_dwarf2_find_nearest_line (abfd, symbols, NULL, section, offset,
6192 filename_ptr, functionname_ptr,
6193 line_ptr, discriminator_ptr,
9defd221 6194 dwarf_debug_sections,
fb167eb2 6195 &mdata->dwarf2_find_line_info);
d9071b0c
TG		 6196}
6197
0a1b45a2 6198bool
d9071b0c
TG		 6199bfd_mach_o_close_and_cleanup (bfd *abfd)
6200{
6201 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
6202 if (bfd_get_format (abfd) == bfd_object && mdata != NULL)
4434114c 6203 {
2ca7691a 6204 if (mdata->dsym_bfd != NULL)
07d6d2b8
AM		 6205 {
6206 bfd *fat_bfd = mdata->dsym_bfd->my_archive;
cf466c2a
NC		 6207#if 0
6208 /* FIXME: PR 19435: This calculation to find the memory allocated by
6209 bfd_mach_o_follow_dsym for the filename does not always end up
6210 selecting the correct pointer. Unfortunately this problem is
6211 very hard to reproduce on a non Mach-O native system, so until it
6212 can be traced and fixed on such a system, this code will remain
6213 commented out. This does mean that there will be a memory leak,
6214 but it is small, and happens when we are closing down, so it
c244074c 6215 should not matter too much. */
07d6d2b8 6216 char *dsym_filename = (char *)(fat_bfd
765cf5f6
AM		 6217 ? bfd_get_filename (fat_bfd)
6218 : bfd_get_filename (mdata->dsym_bfd));
cf466c2a 6219#endif
07d6d2b8
AM		 6220 bfd_close (mdata->dsym_bfd);
6221 mdata->dsym_bfd = NULL;
6222 if (fat_bfd)
6223 bfd_close (fat_bfd);
cf466c2a 6224#if 0
07d6d2b8 6225 free (dsym_filename);
cf466c2a 6226#endif
07d6d2b8 6227 }
4434114c 6228 }
dff55db0 6229
d9071b0c
TG		 6230 return _bfd_generic_close_and_cleanup (abfd);
6231}
6232
0a1b45a2 6233bool
ba75d1c5 6234bfd_mach_o_bfd_free_cached_info (bfd *abfd)
dff55db0 6235{
ba75d1c5
AM		 6236 bfd_mach_o_data_struct *mdata;
6237
6238 if ((bfd_get_format (abfd) == bfd_object
6239 || bfd_get_format (abfd) == bfd_core)
6240 && (mdata = bfd_mach_o_get_data (abfd)) != NULL)
dff55db0 6241 {
ba75d1c5
AM		 6242 _bfd_dwarf2_cleanup_debug_info (abfd, &mdata->dwarf2_find_line_info);
6243 free (mdata->dyn_reloc_cache);
6244 mdata->dyn_reloc_cache = NULL;
6245
6246 for (asection *asect = abfd->sections; asect; asect = asect->next)
6247 {
6248 free (asect->relocation);
6249 asect->relocation = NULL;
6250 }
dff55db0
TG		 6251 }
6252
ba75d1c5
AM		 6253 /* Do not call _bfd_generic_bfd_free_cached_info here.
6254 bfd_mach_o_close_and_cleanup uses tdata. */
0a1b45a2 6255 return true;
dff55db0
TG		 6256}
6257
68ffbac6 6258#define bfd_mach_o_bfd_reloc_type_lookup _bfd_norelocs_bfd_reloc_type_lookup
92bc0e80
TG		 6259#define bfd_mach_o_bfd_reloc_name_lookup _bfd_norelocs_bfd_reloc_name_lookup
6260
bcb51645 6261#define bfd_mach_o_canonicalize_one_reloc NULL
92bc0e80 6262#define bfd_mach_o_swap_reloc_out NULL
b32e07d7 6263#define bfd_mach_o_print_thread NULL
a4551119 6264#define bfd_mach_o_tgt_seg_table NULL
ab76eeaf 6265#define bfd_mach_o_section_type_valid_for_tgt NULL
92bc0e80 6266
07d6d2b8
AM		 6267#define TARGET_NAME mach_o_be_vec
6268#define TARGET_STRING "mach-o-be"
42fa0891 6269#define TARGET_ARCHITECTURE bfd_arch_unknown
4384b284 6270#define TARGET_PAGESIZE 1
07d6d2b8
AM		 6271#define TARGET_BIG_ENDIAN 1
6272#define TARGET_ARCHIVE 0
b93a1992 6273#define TARGET_PRIORITY 1
3af9a47b
NC		 6274#include "mach-o-target.c"
6275
6276#undef TARGET_NAME
6277#undef TARGET_STRING
42fa0891 6278#undef TARGET_ARCHITECTURE
4384b284 6279#undef TARGET_PAGESIZE
3af9a47b
NC		 6280#undef TARGET_BIG_ENDIAN
6281#undef TARGET_ARCHIVE
b93a1992 6282#undef TARGET_PRIORITY
3af9a47b 6283
07d6d2b8
AM		 6284#define TARGET_NAME mach_o_le_vec
6285#define TARGET_STRING "mach-o-le"
42fa0891 6286#define TARGET_ARCHITECTURE bfd_arch_unknown
4384b284 6287#define TARGET_PAGESIZE 1
07d6d2b8
AM		 6288#define TARGET_BIG_ENDIAN 0
6289#define TARGET_ARCHIVE 0
b93a1992 6290#define TARGET_PRIORITY 1
3af9a47b
NC		 6291
6292#include "mach-o-target.c"
6293
6294#undef TARGET_NAME
6295#undef TARGET_STRING
42fa0891 6296#undef TARGET_ARCHITECTURE
4384b284 6297#undef TARGET_PAGESIZE
3af9a47b
NC		 6298#undef TARGET_BIG_ENDIAN
6299#undef TARGET_ARCHIVE
b93a1992 6300#undef TARGET_PRIORITY
3af9a47b 6301
8f95b6e4 6302/* Not yet handled: creating an archive. */
07d6d2b8 6303#define bfd_mach_o_mkarchive _bfd_noarchive_mkarchive
8f95b6e4 6304
eac61af6 6305#define bfd_mach_o_close_and_cleanup bfd_mach_o_fat_close_and_cleanup
47daa70f 6306
8f95b6e4 6307/* Not used. */
07d6d2b8 6308#define bfd_mach_o_generic_stat_arch_elt bfd_mach_o_fat_stat_arch_elt
47daa70f
TG		 6309#define bfd_mach_o_openr_next_archived_file bfd_mach_o_fat_openr_next_archived_file
6310#define bfd_mach_o_archive_p bfd_mach_o_fat_archive_p
8f95b6e4 6311
07d6d2b8
AM		 6312#define TARGET_NAME mach_o_fat_vec
6313#define TARGET_STRING "mach-o-fat"
42fa0891 6314#define TARGET_ARCHITECTURE bfd_arch_unknown
4384b284 6315#define TARGET_PAGESIZE 1
07d6d2b8
AM		 6316#define TARGET_BIG_ENDIAN 1
6317#define TARGET_ARCHIVE 1
b93a1992 6318#define TARGET_PRIORITY 0
3af9a47b
NC		 6319
6320#include "mach-o-target.c"
6321
6322#undef TARGET_NAME
6323#undef TARGET_STRING
42fa0891 6324#undef TARGET_ARCHITECTURE
4384b284 6325#undef TARGET_PAGESIZE
3af9a47b
NC		 6326#undef TARGET_BIG_ENDIAN
6327#undef TARGET_ARCHIVE
b93a1992 6328#undef TARGET_PRIORITY
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