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x86: fold to-scalar-int conversion insns
[deliverable/binutils-gdb.git] / bfd / mach-o.c
CommitLineData
3af9a47b 1/* Mach-O support for BFD.
219d1afa 2 Copyright (C) 1999-2018 Free Software Foundation, Inc.
3af9a47b
NC		 3
4 This file is part of BFD, the Binary File Descriptor library.
5
6 This program is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
cd123cb7 8 the Free Software Foundation; either version 3 of the License, or
3af9a47b
NC		 9 (at your option) any later version.
10
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
15
16 You should have received a copy of the GNU General Public License
a95a4550 17 along with this program; if not, write to the Free Software
cd123cb7
NC		 18 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
19 MA 02110-1301, USA. */
3af9a47b 20
3db64b00 21#include "sysdep.h"
3af9a47b
NC		 22#include "mach-o.h"
23#include "bfd.h"
3af9a47b
NC		 24#include "libbfd.h"
25#include "libiberty.h"
15e1c58a 26#include "aout/stab_gnu.h"
46d1c23b
TG		 27#include "mach-o/reloc.h"
28#include "mach-o/external.h"
3af9a47b 29#include <ctype.h>
7f307238
IS		 30#include <stdlib.h>
31#include <string.h>
3af9a47b 32
154a1ee5
TG		 33#define bfd_mach_o_object_p bfd_mach_o_gen_object_p
34#define bfd_mach_o_core_p bfd_mach_o_gen_core_p
42fa0891 35#define bfd_mach_o_mkobject bfd_mach_o_gen_mkobject
116c20d2 36
92bc0e80 37#define FILE_ALIGN(off, algn) \
b6518b38 38 (((off) + ((file_ptr) 1 << (algn)) - 1) & ((file_ptr) -1U << (algn)))
92bc0e80 39
c9ffd2ea
TG		 40static bfd_boolean
41bfd_mach_o_read_dyld_content (bfd *abfd, bfd_mach_o_dyld_info_command *cmd);
42
c2f09c75 43unsigned int
1e8a024a
TG		 44bfd_mach_o_version (bfd *abfd)
45{
46 bfd_mach_o_data_struct *mdata = NULL;
47
48 BFD_ASSERT (bfd_mach_o_valid (abfd));
046b007d 49 mdata = bfd_mach_o_get_data (abfd);
1e8a024a
TG		 50
51 return mdata->header.version;
52}
53
b34976b6 54bfd_boolean
116c20d2 55bfd_mach_o_valid (bfd *abfd)
3af9a47b
NC		 56{
57 if (abfd == NULL || abfd->xvec == NULL)
154a1ee5 58 return FALSE;
3af9a47b 59
154a1ee5
TG		 60 if (abfd->xvec->flavour != bfd_target_mach_o_flavour)
61 return FALSE;
3af9a47b 62
046b007d 63 if (bfd_mach_o_get_data (abfd) == NULL)
154a1ee5
TG		 64 return FALSE;
65 return TRUE;
66}
67
c2f09c75
TG		 68static INLINE bfd_boolean
69mach_o_wide_p (bfd_mach_o_header *header)
70{
71 switch (header->version)
72 {
73 case 1:
74 return FALSE;
75 case 2:
76 return TRUE;
77 default:
78 BFD_FAIL ();
79 return FALSE;
80 }
81}
82
83static INLINE bfd_boolean
84bfd_mach_o_wide_p (bfd *abfd)
85{
046b007d 86 return mach_o_wide_p (&bfd_mach_o_get_data (abfd)->header);
c2f09c75 87}
68ffbac6 88
154a1ee5
TG		 89/* Tables to translate well known Mach-O segment/section names to bfd
90 names. Use of canonical names (such as .text or .debug_frame) is required
91 by gdb. */
92
a4551119
TG		 93/* __TEXT Segment. */
94static const mach_o_section_name_xlat text_section_names_xlat[] =
154a1ee5 95 {
68ffbac6 96 { ".text", "__text",
a4551119
TG		 97 SEC_CODE | SEC_LOAD, BFD_MACH_O_S_REGULAR,
98 BFD_MACH_O_S_ATTR_PURE_INSTRUCTIONS, 0},
99 { ".const", "__const",
100 SEC_READONLY | SEC_DATA | SEC_LOAD, BFD_MACH_O_S_REGULAR,
101 BFD_MACH_O_S_ATTR_NONE, 0},
102 { ".static_const", "__static_const",
103 SEC_READONLY | SEC_DATA | SEC_LOAD, BFD_MACH_O_S_REGULAR,
104 BFD_MACH_O_S_ATTR_NONE, 0},
105 { ".cstring", "__cstring",
106 SEC_READONLY | SEC_DATA | SEC_LOAD | SEC_MERGE | SEC_STRINGS,
107 BFD_MACH_O_S_CSTRING_LITERALS,
108 BFD_MACH_O_S_ATTR_NONE, 0},
109 { ".literal4", "__literal4",
110 SEC_READONLY | SEC_DATA | SEC_LOAD, BFD_MACH_O_S_4BYTE_LITERALS,
111 BFD_MACH_O_S_ATTR_NONE, 2},
112 { ".literal8", "__literal8",
113 SEC_READONLY | SEC_DATA | SEC_LOAD, BFD_MACH_O_S_8BYTE_LITERALS,
114 BFD_MACH_O_S_ATTR_NONE, 3},
115 { ".literal16", "__literal16",
116 SEC_READONLY | SEC_DATA | SEC_LOAD, BFD_MACH_O_S_16BYTE_LITERALS,
117 BFD_MACH_O_S_ATTR_NONE, 4},
118 { ".constructor", "__constructor",
119 SEC_CODE | SEC_LOAD, BFD_MACH_O_S_REGULAR,
120 BFD_MACH_O_S_ATTR_NONE, 0},
121 { ".destructor", "__destructor",
122 SEC_CODE | SEC_LOAD, BFD_MACH_O_S_REGULAR,
123 BFD_MACH_O_S_ATTR_NONE, 0},
124 { ".eh_frame", "__eh_frame",
632039e0 125 SEC_READONLY | SEC_DATA | SEC_LOAD, BFD_MACH_O_S_COALESCED,
a4551119
TG		 126 BFD_MACH_O_S_ATTR_LIVE_SUPPORT
127 | BFD_MACH_O_S_ATTR_STRIP_STATIC_SYMS
632039e0 128 | BFD_MACH_O_S_ATTR_NO_TOC, 2},
a4551119 129 { NULL, NULL, 0, 0, 0, 0}
154a1ee5
TG		 130 };
131
a4551119
TG		 132/* __DATA Segment. */
133static const mach_o_section_name_xlat data_section_names_xlat[] =
154a1ee5 134 {
a4551119
TG		 135 { ".data", "__data",
136 SEC_DATA | SEC_LOAD, BFD_MACH_O_S_REGULAR,
137 BFD_MACH_O_S_ATTR_NONE, 0},
138 { ".bss", "__bss",
139 SEC_NO_FLAGS, BFD_MACH_O_S_ZEROFILL,
140 BFD_MACH_O_S_ATTR_NONE, 0},
141 { ".const_data", "__const",
142 SEC_DATA | SEC_LOAD, BFD_MACH_O_S_REGULAR,
143 BFD_MACH_O_S_ATTR_NONE, 0},
144 { ".static_data", "__static_data",
145 SEC_DATA | SEC_LOAD, BFD_MACH_O_S_REGULAR,
146 BFD_MACH_O_S_ATTR_NONE, 0},
147 { ".mod_init_func", "__mod_init_func",
148 SEC_DATA | SEC_LOAD, BFD_MACH_O_S_MOD_INIT_FUNC_POINTERS,
149 BFD_MACH_O_S_ATTR_NONE, 2},
150 { ".mod_term_func", "__mod_term_func",
151 SEC_DATA | SEC_LOAD, BFD_MACH_O_S_MOD_FINI_FUNC_POINTERS,
152 BFD_MACH_O_S_ATTR_NONE, 2},
153 { ".dyld", "__dyld",
154 SEC_DATA | SEC_LOAD, BFD_MACH_O_S_REGULAR,
155 BFD_MACH_O_S_ATTR_NONE, 0},
156 { ".cfstring", "__cfstring",
157 SEC_DATA | SEC_LOAD, BFD_MACH_O_S_REGULAR,
158 BFD_MACH_O_S_ATTR_NONE, 2},
159 { NULL, NULL, 0, 0, 0, 0}
154a1ee5
TG		 160 };
161
a4551119
TG		 162/* __DWARF Segment. */
163static const mach_o_section_name_xlat dwarf_section_names_xlat[] =
154a1ee5 164 {
a4551119
TG		 165 { ".debug_frame", "__debug_frame",
166 SEC_DEBUGGING, BFD_MACH_O_S_REGULAR,
167 BFD_MACH_O_S_ATTR_DEBUG, 0},
168 { ".debug_info", "__debug_info",
169 SEC_DEBUGGING, BFD_MACH_O_S_REGULAR,
170 BFD_MACH_O_S_ATTR_DEBUG, 0},
171 { ".debug_abbrev", "__debug_abbrev",
172 SEC_DEBUGGING, BFD_MACH_O_S_REGULAR,
173 BFD_MACH_O_S_ATTR_DEBUG, 0},
174 { ".debug_aranges", "__debug_aranges",
175 SEC_DEBUGGING, BFD_MACH_O_S_REGULAR,
176 BFD_MACH_O_S_ATTR_DEBUG, 0},
177 { ".debug_macinfo", "__debug_macinfo",
178 SEC_DEBUGGING, BFD_MACH_O_S_REGULAR,
179 BFD_MACH_O_S_ATTR_DEBUG, 0},
180 { ".debug_line", "__debug_line",
181 SEC_DEBUGGING, BFD_MACH_O_S_REGULAR,
182 BFD_MACH_O_S_ATTR_DEBUG, 0},
183 { ".debug_loc", "__debug_loc",
184 SEC_DEBUGGING, BFD_MACH_O_S_REGULAR,
185 BFD_MACH_O_S_ATTR_DEBUG, 0},
186 { ".debug_pubnames", "__debug_pubnames",
187 SEC_DEBUGGING, BFD_MACH_O_S_REGULAR,
188 BFD_MACH_O_S_ATTR_DEBUG, 0},
189 { ".debug_pubtypes", "__debug_pubtypes",
190 SEC_DEBUGGING, BFD_MACH_O_S_REGULAR,
191 BFD_MACH_O_S_ATTR_DEBUG, 0},
192 { ".debug_str", "__debug_str",
193 SEC_DEBUGGING, BFD_MACH_O_S_REGULAR,
194 BFD_MACH_O_S_ATTR_DEBUG, 0},
195 { ".debug_ranges", "__debug_ranges",
196 SEC_DEBUGGING, BFD_MACH_O_S_REGULAR,
197 BFD_MACH_O_S_ATTR_DEBUG, 0},
198 { ".debug_macro", "__debug_macro",
199 SEC_DEBUGGING, BFD_MACH_O_S_REGULAR,
200 BFD_MACH_O_S_ATTR_DEBUG, 0},
671a6cbe
NC		 201 { ".debug_gdb_scripts", "__debug_gdb_scri",
202 SEC_DEBUGGING, BFD_MACH_O_S_REGULAR,
203 BFD_MACH_O_S_ATTR_DEBUG, 0},
a4551119 204 { NULL, NULL, 0, 0, 0, 0}
154a1ee5
TG		 205 };
206
a4551119
TG		 207/* __OBJC Segment. */
208static const mach_o_section_name_xlat objc_section_names_xlat[] =
209 {
210 { ".objc_class", "__class",
211 SEC_DATA | SEC_LOAD, BFD_MACH_O_S_REGULAR,
212 BFD_MACH_O_S_ATTR_NO_DEAD_STRIP, 0},
213 { ".objc_meta_class", "__meta_class",
214 SEC_DATA | SEC_LOAD, BFD_MACH_O_S_REGULAR,
215 BFD_MACH_O_S_ATTR_NO_DEAD_STRIP, 0},
216 { ".objc_cat_cls_meth", "__cat_cls_meth",
217 SEC_DATA | SEC_LOAD, BFD_MACH_O_S_REGULAR,
218 BFD_MACH_O_S_ATTR_NO_DEAD_STRIP, 0},
219 { ".objc_cat_inst_meth", "__cat_inst_meth",
220 SEC_DATA | SEC_LOAD, BFD_MACH_O_S_REGULAR,
221 BFD_MACH_O_S_ATTR_NO_DEAD_STRIP, 0},
222 { ".objc_protocol", "__protocol",
223 SEC_DATA | SEC_LOAD, BFD_MACH_O_S_REGULAR,
224 BFD_MACH_O_S_ATTR_NO_DEAD_STRIP, 0},
225 { ".objc_string_object", "__string_object",
226 SEC_DATA | SEC_LOAD, BFD_MACH_O_S_REGULAR,
227 BFD_MACH_O_S_ATTR_NO_DEAD_STRIP, 0},
228 { ".objc_cls_meth", "__cls_meth",
229 SEC_DATA | SEC_LOAD, BFD_MACH_O_S_REGULAR,
230 BFD_MACH_O_S_ATTR_NO_DEAD_STRIP, 0},
231 { ".objc_inst_meth", "__inst_meth",
232 SEC_DATA | SEC_LOAD, BFD_MACH_O_S_REGULAR,
233 BFD_MACH_O_S_ATTR_NO_DEAD_STRIP, 0},
234 { ".objc_cls_refs", "__cls_refs",
235 SEC_DATA | SEC_LOAD, BFD_MACH_O_S_LITERAL_POINTERS,
236 BFD_MACH_O_S_ATTR_NO_DEAD_STRIP, 0},
237 { ".objc_message_refs", "__message_refs",
238 SEC_DATA | SEC_LOAD, BFD_MACH_O_S_LITERAL_POINTERS,
239 BFD_MACH_O_S_ATTR_NO_DEAD_STRIP, 0},
240 { ".objc_symbols", "__symbols",
241 SEC_DATA | SEC_LOAD, BFD_MACH_O_S_REGULAR,
242 BFD_MACH_O_S_ATTR_NO_DEAD_STRIP, 0},
243 { ".objc_category", "__category",
244 SEC_DATA | SEC_LOAD, BFD_MACH_O_S_REGULAR,
245 BFD_MACH_O_S_ATTR_NO_DEAD_STRIP, 0},
246 { ".objc_class_vars", "__class_vars",
247 SEC_DATA | SEC_LOAD, BFD_MACH_O_S_REGULAR,
248 BFD_MACH_O_S_ATTR_NO_DEAD_STRIP, 0},
249 { ".objc_instance_vars", "__instance_vars",
250 SEC_DATA | SEC_LOAD, BFD_MACH_O_S_REGULAR,
251 BFD_MACH_O_S_ATTR_NO_DEAD_STRIP, 0},
252 { ".objc_module_info", "__module_info",
253 SEC_DATA | SEC_LOAD, BFD_MACH_O_S_REGULAR,
254 BFD_MACH_O_S_ATTR_NO_DEAD_STRIP, 0},
255 { ".objc_selector_strs", "__selector_strs",
256 SEC_DATA | SEC_LOAD, BFD_MACH_O_S_CSTRING_LITERALS,
257 BFD_MACH_O_S_ATTR_NO_DEAD_STRIP, 0},
258 { ".objc_image_info", "__image_info",
259 SEC_DATA | SEC_LOAD, BFD_MACH_O_S_REGULAR,
260 BFD_MACH_O_S_ATTR_NO_DEAD_STRIP, 0},
261 { ".objc_selector_fixup", "__sel_fixup",
262 SEC_DATA | SEC_LOAD, BFD_MACH_O_S_REGULAR,
263 BFD_MACH_O_S_ATTR_NO_DEAD_STRIP, 0},
264 /* Objc V1 */
265 { ".objc1_class_ext", "__class_ext",
266 SEC_DATA | SEC_LOAD, BFD_MACH_O_S_REGULAR,
267 BFD_MACH_O_S_ATTR_NO_DEAD_STRIP, 0},
268 { ".objc1_property_list", "__property",
269 SEC_DATA | SEC_LOAD, BFD_MACH_O_S_REGULAR,
270 BFD_MACH_O_S_ATTR_NO_DEAD_STRIP, 0},
271 { ".objc1_protocol_ext", "__protocol_ext",
272 SEC_DATA | SEC_LOAD, BFD_MACH_O_S_REGULAR,
273 BFD_MACH_O_S_ATTR_NO_DEAD_STRIP, 0},
274 { NULL, NULL, 0, 0, 0, 0}
275 };
5a5cbf72 276
a4551119 277static const mach_o_segment_name_xlat segsec_names_xlat[] =
154a1ee5 278 {
154a1ee5
TG		 279 { "__TEXT", text_section_names_xlat },
280 { "__DATA", data_section_names_xlat },
5a5cbf72 281 { "__DWARF", dwarf_section_names_xlat },
a4551119 282 { "__OBJC", objc_section_names_xlat },
154a1ee5
TG		 283 { NULL, NULL }
284 };
285
2ca7691a
TG		 286static const char dsym_subdir[] = ".dSYM/Contents/Resources/DWARF";
287
a4551119
TG		 288/* For both cases bfd-name => mach-o name and vice versa, the specific target
289 is checked before the generic. This allows a target (e.g. ppc for cstring)
290 to override the generic definition with a more specific one. */
154a1ee5 291
a4551119
TG		 292/* Fetch the translation from a Mach-O section designation (segment, section)
293 as a bfd short name, if one exists. Otherwise return NULL.
68ffbac6 294
a4551119
TG		 295 Allow the segment and section names to be unterminated 16 byte arrays. */
296
297const mach_o_section_name_xlat *
298bfd_mach_o_section_data_for_mach_sect (bfd *abfd, const char *segname,
299 const char *sectname)
154a1ee5
TG		 300{
301 const struct mach_o_segment_name_xlat *seg;
a4551119
TG		 302 const mach_o_section_name_xlat *sec;
303 bfd_mach_o_backend_data *bed = bfd_mach_o_get_backend_data (abfd);
154a1ee5 304
a4551119
TG		 305 /* First try any target-specific translations defined... */
306 if (bed->segsec_names_xlat)
307 for (seg = bed->segsec_names_xlat; seg->segname; seg++)
308 if (strncmp (seg->segname, segname, BFD_MACH_O_SEGNAME_SIZE) == 0)
309 for (sec = seg->sections; sec->mach_o_name; sec++)
310 if (strncmp (sec->mach_o_name, sectname,
311 BFD_MACH_O_SECTNAME_SIZE) == 0)
312 return sec;
8462aec7 313
a4551119 314 /* ... and then the Mach-O generic ones. */
154a1ee5 315 for (seg = segsec_names_xlat; seg->segname; seg++)
a4551119
TG		 316 if (strncmp (seg->segname, segname, BFD_MACH_O_SEGNAME_SIZE) == 0)
317 for (sec = seg->sections; sec->mach_o_name; sec++)
07d6d2b8 318 if (strncmp (sec->mach_o_name, sectname,
a4551119 319 BFD_MACH_O_SECTNAME_SIZE) == 0)
07d6d2b8 320 return sec;
154a1ee5 321
68ffbac6 322 return NULL;
53d58d96
TG		 323}
324
a4551119 325/* If the bfd_name for this section is a 'canonical' form for which we
68ffbac6 326 know the Mach-O data, return the segment name and the data for the
a4551119 327 Mach-O equivalent. Otherwise return NULL. */
7ba695a9 328
a4551119
TG		 329const mach_o_section_name_xlat *
330bfd_mach_o_section_data_for_bfd_name (bfd *abfd, const char *bfd_name,
331 const char **segname)
53d58d96 332{
a4551119
TG		 333 const struct mach_o_segment_name_xlat *seg;
334 const mach_o_section_name_xlat *sec;
335 bfd_mach_o_backend_data *bed = bfd_mach_o_get_backend_data (abfd);
336 *segname = NULL;
337
338 if (bfd_name[0] != '.')
339 return NULL;
340
341 /* First try any target-specific translations defined... */
342 if (bed->segsec_names_xlat)
343 for (seg = bed->segsec_names_xlat; seg->segname; seg++)
344 for (sec = seg->sections; sec->bfd_name; sec++)
345 if (strcmp (bfd_name, sec->bfd_name) == 0)
346 {
347 *segname = seg->segname;
348 return sec;
349 }
350
351 /* ... and then the Mach-O generic ones. */
352 for (seg = segsec_names_xlat; seg->segname; seg++)
353 for (sec = seg->sections; sec->bfd_name; sec++)
354 if (strcmp (bfd_name, sec->bfd_name) == 0)
355 {
356 *segname = seg->segname;
357 return sec;
358 }
359
68ffbac6 360 return NULL;
a4551119
TG		 361}
362
363/* Convert Mach-O section name to BFD.
364
68ffbac6 365 Try to use standard/canonical names, for which we have tables including
a4551119
TG		 366 default flag settings - which are returned. Otherwise forge a new name
367 in the form "<segmentname>.<sectionname>" this will be prefixed with
368 LC_SEGMENT. if the segment name does not begin with an underscore.
369
370 SEGNAME and SECTNAME are 16 byte arrays (they do not need to be NUL-
371 terminated if the name length is exactly 16 bytes - but must be if the name
372 length is less than 16 characters). */
373
374void
375bfd_mach_o_convert_section_name_to_bfd (bfd *abfd, const char *segname,
376 const char *secname, const char **name,
377 flagword *flags)
378{
379 const mach_o_section_name_xlat *xlat;
53d58d96
TG		 380 char *res;
381 unsigned int len;
382 const char *pfx = "";
383
a4551119
TG		 384 *name = NULL;
385 *flags = SEC_NO_FLAGS;
53d58d96 386
68ffbac6 387 /* First search for a canonical name...
a4551119
TG		 388 xlat will be non-null if there is an entry for segname, secname. */
389 xlat = bfd_mach_o_section_data_for_mach_sect (abfd, segname, secname);
390 if (xlat)
391 {
392 len = strlen (xlat->bfd_name);
64d29018 393 res = bfd_alloc (abfd, len + 1);
a4551119
TG		 394 if (res == NULL)
395 return;
396 memcpy (res, xlat->bfd_name, len+1);
397 *name = res;
398 *flags = xlat->bfd_flags;
399 return;
400 }
401
402 /* ... else we make up a bfd name from the segment concatenated with the
403 section. */
154a1ee5 404
7ba695a9 405 len = 16 + 1 + 16 + 1;
154a1ee5 406
c2f09c75
TG		 407 /* Put "LC_SEGMENT." prefix if the segment name is weird (ie doesn't start
408 with an underscore. */
f1bde64c 409 if (segname[0] != '_')
c2f09c75
TG		 410 {
411 static const char seg_pfx[] = "LC_SEGMENT.";
412
413 pfx = seg_pfx;
414 len += sizeof (seg_pfx) - 1;
415 }
416
154a1ee5
TG		 417 res = bfd_alloc (abfd, len);
418 if (res == NULL)
8462aec7 419 return;
a4551119 420 snprintf (res, len, "%s%.16s.%.16s", pfx, segname, secname);
8462aec7 421 *name = res;
154a1ee5
TG		 422}
423
a4551119 424/* Convert a bfd section name to a Mach-O segment + section name.
154a1ee5 425
a4551119
TG		 426 If the name is a canonical one for which we have a Darwin match
427 return the translation table - which contains defaults for flags,
428 type, attribute and default alignment data.
429
68ffbac6 430 Otherwise, expand the bfd_name (assumed to be in the form
a4551119
TG		 431 "[LC_SEGMENT.]<segmentname>.<sectionname>") and return NULL. */
432
433static const mach_o_section_name_xlat *
154a1ee5 434bfd_mach_o_convert_section_name_to_mach_o (bfd *abfd ATTRIBUTE_UNUSED,
07d6d2b8
AM		 435 asection *sect,
436 bfd_mach_o_section *section)
154a1ee5 437{
a4551119 438 const mach_o_section_name_xlat *xlat;
154a1ee5 439 const char *name = bfd_get_section_name (abfd, sect);
a4551119 440 const char *segname;
154a1ee5
TG		 441 const char *dot;
442 unsigned int len;
443 unsigned int seglen;
444 unsigned int seclen;
445
a4551119
TG		 446 memset (section->segname, 0, BFD_MACH_O_SEGNAME_SIZE + 1);
447 memset (section->sectname, 0, BFD_MACH_O_SECTNAME_SIZE + 1);
448
449 /* See if is a canonical name ... */
450 xlat = bfd_mach_o_section_data_for_bfd_name (abfd, name, &segname);
451 if (xlat)
452 {
453 strcpy (section->segname, segname);
454 strcpy (section->sectname, xlat->mach_o_name);
455 return xlat;
456 }
154a1ee5 457
a4551119
TG		 458 /* .. else we convert our constructed one back to Mach-O.
459 Strip LC_SEGMENT. prefix, if present. */
154a1ee5
TG		 460 if (strncmp (name, "LC_SEGMENT.", 11) == 0)
461 name += 11;
462
463 /* Find a dot. */
464 dot = strchr (name, '.');
465 len = strlen (name);
466
467 /* Try to split name into segment and section names. */
468 if (dot && dot != name)
469 {
470 seglen = dot - name;
471 seclen = len - (dot + 1 - name);
472
ca148c5a
TG		 473 if (seglen <= BFD_MACH_O_SEGNAME_SIZE
474 && seclen <= BFD_MACH_O_SECTNAME_SIZE)
07d6d2b8
AM		 475 {
476 memcpy (section->segname, name, seglen);
477 section->segname[seglen] = 0;
478 memcpy (section->sectname, dot + 1, seclen);
479 section->sectname[seclen] = 0;
480 return NULL;
481 }
154a1ee5
TG		 482 }
483
a4551119
TG		 484 /* The segment and section names are both missing - don't make them
485 into dots. */
486 if (dot && dot == name)
487 return NULL;
488
489 /* Just duplicate the name into both segment and section. */
154a1ee5
TG		 490 if (len > 16)
491 len = 16;
492 memcpy (section->segname, name, len);
493 section->segname[len] = 0;
494 memcpy (section->sectname, name, len);
495 section->sectname[len] = 0;
a4551119 496 return NULL;
3af9a47b
NC		 497}
498
b2b62060
TG		 499/* Return the size of an entry for section SEC.
500 Must be called only for symbol pointer section and symbol stubs
501 sections. */
502
c5012cd8 503unsigned int
b2b62060
TG		 504bfd_mach_o_section_get_entry_size (bfd *abfd, bfd_mach_o_section *sec)
505{
506 switch (sec->flags & BFD_MACH_O_SECTION_TYPE_MASK)
507 {
508 case BFD_MACH_O_S_NON_LAZY_SYMBOL_POINTERS:
509 case BFD_MACH_O_S_LAZY_SYMBOL_POINTERS:
510 return bfd_mach_o_wide_p (abfd) ? 8 : 4;
511 case BFD_MACH_O_S_SYMBOL_STUBS:
512 return sec->reserved2;
513 default:
514 BFD_FAIL ();
515 return 0;
516 }
517}
518
519/* Return the number of indirect symbols for a section.
520 Must be called only for symbol pointer section and symbol stubs
521 sections. */
522
c5012cd8 523unsigned int
b2b62060
TG		 524bfd_mach_o_section_get_nbr_indirect (bfd *abfd, bfd_mach_o_section *sec)
525{
526 unsigned int elsz;
527
528 elsz = bfd_mach_o_section_get_entry_size (abfd, sec);
529 if (elsz == 0)
530 return 0;
531 else
532 return sec->size / elsz;
533}
534
c9ffd2ea
TG		 535/* Append command CMD to ABFD. Note that header.ncmds is not updated. */
536
537static void
538bfd_mach_o_append_command (bfd *abfd, bfd_mach_o_load_command *cmd)
539{
540 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
541
542 if (mdata->last_command != NULL)
543 mdata->last_command->next = cmd;
544 else
545 mdata->first_command = cmd;
546 mdata->last_command = cmd;
547 cmd->next = NULL;
548}
b2b62060 549
3af9a47b
NC		 550/* Copy any private info we understand from the input symbol
551 to the output symbol. */
552
154a1ee5 553bfd_boolean
116c20d2 554bfd_mach_o_bfd_copy_private_symbol_data (bfd *ibfd ATTRIBUTE_UNUSED,
b22161d6 555 asymbol *isymbol,
116c20d2 556 bfd *obfd ATTRIBUTE_UNUSED,
b22161d6
IS		 557 asymbol *osymbol)
558{
559 bfd_mach_o_asymbol *os, *is;
c9ffd2ea 560
b22161d6
IS		 561 os = (bfd_mach_o_asymbol *)osymbol;
562 is = (bfd_mach_o_asymbol *)isymbol;
563 os->n_type = is->n_type;
564 os->n_sect = is->n_sect;
565 os->n_desc = is->n_desc;
566 os->symbol.udata.i = is->symbol.udata.i;
c9ffd2ea 567
b34976b6 568 return TRUE;
3af9a47b
NC		 569}
570
571/* Copy any private info we understand from the input section
572 to the output section. */
573
154a1ee5 574bfd_boolean
c9ffd2ea
TG		 575bfd_mach_o_bfd_copy_private_section_data (bfd *ibfd, asection *isection,
576 bfd *obfd, asection *osection)
a4551119 577{
c9ffd2ea
TG		 578 bfd_mach_o_section *os = bfd_mach_o_get_mach_o_section (osection);
579 bfd_mach_o_section *is = bfd_mach_o_get_mach_o_section (isection);
68ffbac6 580
c9ffd2ea
TG		 581 if (ibfd->xvec->flavour != bfd_target_mach_o_flavour
582 || obfd->xvec->flavour != bfd_target_mach_o_flavour)
583 return TRUE;
584
585 BFD_ASSERT (is != NULL && os != NULL);
586
587 os->flags = is->flags;
588 os->reserved1 = is->reserved1;
589 os->reserved2 = is->reserved2;
590 os->reserved3 = is->reserved3;
a4551119 591
b34976b6 592 return TRUE;
3af9a47b
NC		 593}
594
595/* Copy any private info we understand from the input bfd
596 to the output bfd. */
597
154a1ee5 598bfd_boolean
967b2c53 599bfd_mach_o_bfd_copy_private_header_data (bfd *ibfd, bfd *obfd)
3af9a47b 600{
c9ffd2ea
TG		 601 bfd_mach_o_data_struct *imdata;
602 bfd_mach_o_data_struct *omdata;
603 bfd_mach_o_load_command *icmd;
604
154a1ee5
TG		 605 if (bfd_get_flavour (ibfd) != bfd_target_mach_o_flavour
606 || bfd_get_flavour (obfd) != bfd_target_mach_o_flavour)
607 return TRUE;
608
3af9a47b
NC		 609 BFD_ASSERT (bfd_mach_o_valid (ibfd));
610 BFD_ASSERT (bfd_mach_o_valid (obfd));
611
c9ffd2ea
TG		 612 imdata = bfd_mach_o_get_data (ibfd);
613 omdata = bfd_mach_o_get_data (obfd);
614
615 /* Copy header flags. */
616 omdata->header.flags = imdata->header.flags;
617
618 /* Copy commands. */
619 for (icmd = imdata->first_command; icmd != NULL; icmd = icmd->next)
620 {
621 bfd_mach_o_load_command *ocmd;
622
623 switch (icmd->type)
624 {
625 case BFD_MACH_O_LC_LOAD_DYLIB:
626 case BFD_MACH_O_LC_LOAD_DYLINKER:
627 case BFD_MACH_O_LC_DYLD_INFO:
628 /* Command is copied. */
629 ocmd = bfd_alloc (obfd, sizeof (bfd_mach_o_load_command));
630 if (ocmd == NULL)
631 return FALSE;
632
633 /* Copy common fields. */
634 ocmd->type = icmd->type;
635 ocmd->type_required = icmd->type_required;
636 ocmd->offset = 0;
637 ocmd->len = icmd->len;
638 break;
639
640 default:
641 /* Command is not copied. */
642 continue;
643 break;
644 }
645
646 switch (icmd->type)
647 {
648 case BFD_MACH_O_LC_LOAD_DYLIB:
649 {
650 bfd_mach_o_dylib_command *idy = &icmd->command.dylib;
651 bfd_mach_o_dylib_command *ody = &ocmd->command.dylib;
652
653 ody->name_offset = idy->name_offset;
654 ody->timestamp = idy->timestamp;
655 ody->current_version = idy->current_version;
656 ody->compatibility_version = idy->compatibility_version;
657 ody->name_str = idy->name_str;
658 }
659 break;
660
661 case BFD_MACH_O_LC_LOAD_DYLINKER:
662 {
663 bfd_mach_o_dylinker_command *idy = &icmd->command.dylinker;
664 bfd_mach_o_dylinker_command *ody = &ocmd->command.dylinker;
665
666 ody->name_offset = idy->name_offset;
667 ody->name_str = idy->name_str;
668 }
669 break;
670
671 case BFD_MACH_O_LC_DYLD_INFO:
672 {
673 bfd_mach_o_dyld_info_command *idy = &icmd->command.dyld_info;
674 bfd_mach_o_dyld_info_command *ody = &ocmd->command.dyld_info;
675
676 if (bfd_mach_o_read_dyld_content (ibfd, idy))
677 {
678 ody->rebase_size = idy->rebase_size;
679 ody->rebase_content = idy->rebase_content;
680
681 ody->bind_size = idy->bind_size;
682 ody->bind_content = idy->bind_content;
683
684 ody->weak_bind_size = idy->weak_bind_size;
685 ody->weak_bind_content = idy->weak_bind_content;
686
687 ody->lazy_bind_size = idy->lazy_bind_size;
688 ody->lazy_bind_content = idy->lazy_bind_content;
689
690 ody->export_size = idy->export_size;
691 ody->export_content = idy->export_content;
692 }
86eafac0
NC		 693 /* PR 17512L: file: 730e492d. */
694 else
695 {
1b786873
L		 696 ody->rebase_size =
697 ody->bind_size =
698 ody->weak_bind_size =
699 ody->lazy_bind_size =
86eafac0 700 ody->export_size = 0;
1b786873
L		 701 ody->rebase_content =
702 ody->bind_content =
703 ody->weak_bind_content =
704 ody->lazy_bind_content =
86eafac0
NC		 705 ody->export_content = NULL;
706 }
c9ffd2ea
TG		 707 }
708 break;
709
710 default:
711 /* That command should be handled. */
712 abort ();
713 }
714
715 /* Insert command. */
716 bfd_mach_o_append_command (obfd, ocmd);
717 }
154a1ee5 718
b34976b6 719 return TRUE;
3af9a47b
NC		 720}
721
0c9ef0f0
TG		 722/* This allows us to set up to 32 bits of flags (unless we invent some
723 fiendish scheme to subdivide). For now, we'll just set the file flags
724 without error checking - just overwrite. */
68ffbac6 725
0c9ef0f0
TG		 726bfd_boolean
727bfd_mach_o_bfd_set_private_flags (bfd *abfd, flagword flags)
728{
729 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
730
731 if (!mdata)
732 return FALSE;
733
734 mdata->header.flags = flags;
735 return TRUE;
736}
737
046b007d 738/* Count the total number of symbols. */
154a1ee5 739
3af9a47b 740static long
116c20d2 741bfd_mach_o_count_symbols (bfd *abfd)
3af9a47b 742{
046b007d 743 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
3af9a47b 744
046b007d
TG		 745 if (mdata->symtab == NULL)
746 return 0;
747 return mdata->symtab->nsyms;
3af9a47b
NC		 748}
749
154a1ee5 750long
116c20d2 751bfd_mach_o_get_symtab_upper_bound (bfd *abfd)
3af9a47b
NC		 752{
753 long nsyms = bfd_mach_o_count_symbols (abfd);
754
3af9a47b
NC		 755 return ((nsyms + 1) * sizeof (asymbol *));
756}
757
154a1ee5 758long
116c20d2 759bfd_mach_o_canonicalize_symtab (bfd *abfd, asymbol **alocation)
3af9a47b 760{
046b007d 761 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
3af9a47b 762 long nsyms = bfd_mach_o_count_symbols (abfd);
046b007d
TG		 763 bfd_mach_o_symtab_command *sym = mdata->symtab;
764 unsigned long j;
3af9a47b
NC		 765
766 if (nsyms < 0)
767 return nsyms;
768
092d27ff
TG		 769 if (nsyms == 0)
770 {
771 /* Do not try to read symbols if there are none. */
772 alocation[0] = NULL;
773 return 0;
774 }
775
afbb9e17 776 if (!bfd_mach_o_read_symtab_symbols (abfd))
3af9a47b 777 {
4eca0228 778 _bfd_error_handler
07d6d2b8 779 (_("bfd_mach_o_canonicalize_symtab: unable to load symbols"));
046b007d
TG		 780 return 0;
781 }
3af9a47b 782
046b007d 783 BFD_ASSERT (sym->symbols != NULL);
3af9a47b 784
046b007d
TG		 785 for (j = 0; j < sym->nsyms; j++)
786 alocation[j] = &sym->symbols[j].symbol;
3af9a47b 787
046b007d 788 alocation[j] = NULL;
a95a4550 789
3af9a47b
NC		 790 return nsyms;
791}
792
aeefa1c9
TG		 793/* Create synthetic symbols for indirect symbols. */
794
b2b62060
TG		 795long
796bfd_mach_o_get_synthetic_symtab (bfd *abfd,
07d6d2b8
AM		 797 long symcount ATTRIBUTE_UNUSED,
798 asymbol **syms ATTRIBUTE_UNUSED,
799 long dynsymcount ATTRIBUTE_UNUSED,
800 asymbol **dynsyms ATTRIBUTE_UNUSED,
801 asymbol **ret)
b2b62060
TG		 802{
803 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
804 bfd_mach_o_dysymtab_command *dysymtab = mdata->dysymtab;
805 bfd_mach_o_symtab_command *symtab = mdata->symtab;
806 asymbol *s;
896ca098
NC		 807 char * s_start;
808 char * s_end;
b2b62060
TG		 809 unsigned long count, i, j, n;
810 size_t size;
811 char *names;
812 char *nul_name;
896ca098 813 const char stub [] = "$stub";
b2b62060
TG		 814
815 *ret = NULL;
816
aeefa1c9 817 /* Stop now if no symbols or no indirect symbols. */
896ca098
NC		 818 if (dysymtab == NULL || dysymtab->nindirectsyms == 0
819 || symtab == NULL || symtab->symbols == NULL)
b2b62060
TG		 820 return 0;
821
aeefa1c9
TG		 822 /* We need to allocate a bfd symbol for every indirect symbol and to
823 allocate the memory for its name. */
b2b62060
TG		 824 count = dysymtab->nindirectsyms;
825 size = count * sizeof (asymbol) + 1;
826
827 for (j = 0; j < count; j++)
828 {
896ca098 829 const char * strng;
b2b62060 830 unsigned int isym = dysymtab->indirect_syms[j];
aeefa1c9
TG		 831
832 /* Some indirect symbols are anonymous. */
896ca098
NC		 833 if (isym < symtab->nsyms && (strng = symtab->symbols[isym].symbol.name))
834 /* PR 17512: file: f5b8eeba. */
835 size += strnlen (strng, symtab->strsize - (strng - symtab->strtab)) + sizeof (stub);
b2b62060
TG		 836 }
837
896ca098
NC		 838 s_start = bfd_malloc (size);
839 s = *ret = (asymbol *) s_start;
b2b62060
TG		 840 if (s == NULL)
841 return -1;
842 names = (char *) (s + count);
843 nul_name = names;
844 *names++ = 0;
896ca098 845 s_end = s_start + size;
68ffbac6 846
b2b62060
TG		 847 n = 0;
848 for (i = 0; i < mdata->nsects; i++)
849 {
850 bfd_mach_o_section *sec = mdata->sections[i];
91d6fa6a 851 unsigned int first, last;
b2b62060
TG		 852 bfd_vma addr;
853 bfd_vma entry_size;
68ffbac6 854
b2b62060 855 switch (sec->flags & BFD_MACH_O_SECTION_TYPE_MASK)
07d6d2b8
AM		 856 {
857 case BFD_MACH_O_S_NON_LAZY_SYMBOL_POINTERS:
858 case BFD_MACH_O_S_LAZY_SYMBOL_POINTERS:
859 case BFD_MACH_O_S_SYMBOL_STUBS:
860 /* Only these sections have indirect symbols. */
861 first = sec->reserved1;
862 last = first + bfd_mach_o_section_get_nbr_indirect (abfd, sec);
863 addr = sec->addr;
864 entry_size = bfd_mach_o_section_get_entry_size (abfd, sec);
896ca098
NC		 865
866 /* PR 17512: file: 08e15eec. */
867 if (first >= count || last >= count || first > last)
868 goto fail;
869
07d6d2b8
AM		 870 for (j = first; j < last; j++)
871 {
872 unsigned int isym = dysymtab->indirect_syms[j];
b2b62060 873
896ca098
NC		 874 /* PR 17512: file: 04d64d9b. */
875 if (((char *) s) + sizeof (* s) > s_end)
876 goto fail;
877
07d6d2b8
AM		 878 s->flags = BSF_GLOBAL | BSF_SYNTHETIC;
879 s->section = sec->bfdsection;
880 s->value = addr - sec->addr;
881 s->udata.p = NULL;
68ffbac6 882
07d6d2b8
AM		 883 if (isym < symtab->nsyms
884 && symtab->symbols[isym].symbol.name)
885 {
886 const char *sym = symtab->symbols[isym].symbol.name;
887 size_t len;
b2b62060 888
07d6d2b8
AM		 889 s->name = names;
890 len = strlen (sym);
896ca098
NC		 891 /* PR 17512: file: 47dfd4d2. */
892 if (names + len >= s_end)
893 goto fail;
07d6d2b8
AM		 894 memcpy (names, sym, len);
895 names += len;
896ca098
NC		 896 /* PR 17512: file: 18f340a4. */
897 if (names + sizeof (stub) >= s_end)
898 goto fail;
07d6d2b8
AM		 899 memcpy (names, stub, sizeof (stub));
900 names += sizeof (stub);
901 }
902 else
903 s->name = nul_name;
904
905 addr += entry_size;
906 s++;
907 n++;
908 }
909 break;
910 default:
911 break;
912 }
b2b62060
TG		 913 }
914
915 return n;
896ca098
NC		 916
917 fail:
918 free (s_start);
919 * ret = NULL;
920 return -1;
b2b62060
TG		 921}
922
154a1ee5 923void
116c20d2
NC		 924bfd_mach_o_get_symbol_info (bfd *abfd ATTRIBUTE_UNUSED,
925 asymbol *symbol,
926 symbol_info *ret)
3af9a47b
NC		 927{
928 bfd_symbol_info (symbol, ret);
929}
930
154a1ee5 931void
116c20d2 932bfd_mach_o_print_symbol (bfd *abfd,
91d6fa6a 933 void * afile,
116c20d2
NC		 934 asymbol *symbol,
935 bfd_print_symbol_type how)
3af9a47b
NC		 936{
937 FILE *file = (FILE *) afile;
15e1c58a 938 const char *name;
92bc0e80 939 bfd_mach_o_asymbol *asym = (bfd_mach_o_asymbol *)symbol;
3af9a47b
NC		 940
941 switch (how)
942 {
943 case bfd_print_symbol_name:
944 fprintf (file, "%s", symbol->name);
945 break;
946 default:
91d6fa6a 947 bfd_print_symbol_vandf (abfd, (void *) file, symbol);
92bc0e80
TG		 948 if (asym->n_type & BFD_MACH_O_N_STAB)
949 name = bfd_get_stab_name (asym->n_type);
15e1c58a 950 else
92bc0e80 951 switch (asym->n_type & BFD_MACH_O_N_TYPE)
15e1c58a
TG		 952 {
953 case BFD_MACH_O_N_UNDF:
07d6d2b8
AM		 954 if (symbol->value == 0)
955 name = "UND";
956 else
957 name = "COM";
15e1c58a
TG		 958 break;
959 case BFD_MACH_O_N_ABS:
960 name = "ABS";
961 break;
962 case BFD_MACH_O_N_INDR:
963 name = "INDR";
964 break;
965 case BFD_MACH_O_N_PBUD:
966 name = "PBUD";
967 break;
968 case BFD_MACH_O_N_SECT:
969 name = "SECT";
970 break;
971 default:
972 name = "???";
973 break;
974 }
975 if (name == NULL)
976 name = "";
92bc0e80 977 fprintf (file, " %02x %-6s %02x %04x",
07d6d2b8 978 asym->n_type, name, asym->n_sect, asym->n_desc);
92bc0e80
TG		 979 if ((asym->n_type & BFD_MACH_O_N_STAB) == 0
980 && (asym->n_type & BFD_MACH_O_N_TYPE) == BFD_MACH_O_N_SECT)
e0ce1005 981 fprintf (file, " [%s]", symbol->section->name);
15e1c58a 982 fprintf (file, " %s", symbol->name);
3af9a47b
NC		 983 }
984}
985
986static void
116c20d2 987bfd_mach_o_convert_architecture (bfd_mach_o_cpu_type mtype,
0b2de107 988 bfd_mach_o_cpu_subtype msubtype,
116c20d2
NC		 989 enum bfd_architecture *type,
990 unsigned long *subtype)
3af9a47b
NC		 991{
992 *subtype = bfd_arch_unknown;
993
994 switch (mtype)
995 {
0b2de107
TG		 996 case BFD_MACH_O_CPU_TYPE_VAX:
997 *type = bfd_arch_vax;
998 break;
999 case BFD_MACH_O_CPU_TYPE_MC680x0:
1000 *type = bfd_arch_m68k;
1001 break;
1e8a024a
TG		 1002 case BFD_MACH_O_CPU_TYPE_I386:
1003 *type = bfd_arch_i386;
1004 *subtype = bfd_mach_i386_i386;
1005 break;
1006 case BFD_MACH_O_CPU_TYPE_X86_64:
1007 *type = bfd_arch_i386;
1008 *subtype = bfd_mach_x86_64;
1009 break;
0b2de107
TG		 1010 case BFD_MACH_O_CPU_TYPE_MIPS:
1011 *type = bfd_arch_mips;
1012 break;
1013 case BFD_MACH_O_CPU_TYPE_MC98000:
1014 *type = bfd_arch_m98k;
1015 break;
1016 case BFD_MACH_O_CPU_TYPE_HPPA:
1017 *type = bfd_arch_hppa;
1018 break;
1019 case BFD_MACH_O_CPU_TYPE_ARM:
1020 *type = bfd_arch_arm;
1021 switch (msubtype)
07d6d2b8
AM		 1022 {
1023 case BFD_MACH_O_CPU_SUBTYPE_ARM_V4T:
1024 *subtype = bfd_mach_arm_4T;
1025 break;
1026 case BFD_MACH_O_CPU_SUBTYPE_ARM_V6:
1027 *subtype = bfd_mach_arm_4T; /* Best fit ? */
1028 break;
1029 case BFD_MACH_O_CPU_SUBTYPE_ARM_V5TEJ:
1030 *subtype = bfd_mach_arm_5TE;
1031 break;
1032 case BFD_MACH_O_CPU_SUBTYPE_ARM_XSCALE:
1033 *subtype = bfd_mach_arm_XScale;
1034 break;
1035 case BFD_MACH_O_CPU_SUBTYPE_ARM_V7:
1036 *subtype = bfd_mach_arm_5TE; /* Best fit ? */
1037 break;
1038 case BFD_MACH_O_CPU_SUBTYPE_ARM_ALL:
1039 default:
1040 break;
1041 }
0b2de107
TG		 1042 break;
1043 case BFD_MACH_O_CPU_TYPE_MC88000:
1044 *type = bfd_arch_m88k;
1045 break;
1e8a024a
TG		 1046 case BFD_MACH_O_CPU_TYPE_SPARC:
1047 *type = bfd_arch_sparc;
1048 *subtype = bfd_mach_sparc;
1049 break;
0b2de107
TG		 1050 case BFD_MACH_O_CPU_TYPE_I860:
1051 *type = bfd_arch_i860;
1052 break;
1053 case BFD_MACH_O_CPU_TYPE_ALPHA:
1054 *type = bfd_arch_alpha;
1055 break;
1e8a024a
TG		 1056 case BFD_MACH_O_CPU_TYPE_POWERPC:
1057 *type = bfd_arch_powerpc;
c2f09c75 1058 *subtype = bfd_mach_ppc;
1e8a024a
TG		 1059 break;
1060 case BFD_MACH_O_CPU_TYPE_POWERPC_64:
1061 *type = bfd_arch_powerpc;
c2f09c75 1062 *subtype = bfd_mach_ppc64;
1e8a024a 1063 break;
d8028530
TG		 1064 case BFD_MACH_O_CPU_TYPE_ARM64:
1065 *type = bfd_arch_aarch64;
1066 *subtype = bfd_mach_aarch64;
1067 break;
3af9a47b 1068 default:
1e8a024a
TG		 1069 *type = bfd_arch_unknown;
1070 break;
3af9a47b
NC		 1071 }
1072}
a95a4550 1073
c9ffd2ea
TG		 1074/* Write n NUL bytes to ABFD so that LEN + n is a multiple of 4. Return the
1075 number of bytes written or -1 in case of error. */
1076
1077static int
1078bfd_mach_o_pad4 (bfd *abfd, unsigned int len)
1079{
1080 if (len % 4 != 0)
1081 {
1082 char pad[4] = {0,0,0,0};
1083 unsigned int padlen = 4 - (len % 4);
1084
1085 if (bfd_bwrite (pad, padlen, abfd) != padlen)
1086 return -1;
1087
1088 return padlen;
1089 }
1090 else
1091 return 0;
1092}
1093
1094/* Likewise, but for a command. */
1095
1096static int
1097bfd_mach_o_pad_command (bfd *abfd, unsigned int len)
1098{
1099 unsigned int align = bfd_mach_o_wide_p (abfd) ? 8 : 4;
1100
1101 if (len % align != 0)
1102 {
1103 char pad[8] = {0};
1104 unsigned int padlen = align - (len % align);
1105
1106 if (bfd_bwrite (pad, padlen, abfd) != padlen)
1107 return -1;
1108
1109 return padlen;
1110 }
1111 else
1112 return 0;
1113}
1114
154a1ee5 1115static bfd_boolean
116c20d2
NC		 1116bfd_mach_o_write_header (bfd *abfd, bfd_mach_o_header *header)
1117{
46d1c23b 1118 struct mach_o_header_external raw;
1e8a024a
TG		 1119 unsigned int size;
1120
c2f09c75 1121 size = mach_o_wide_p (header) ?
154a1ee5 1122 BFD_MACH_O_HEADER_64_SIZE : BFD_MACH_O_HEADER_SIZE;
116c20d2 1123
46d1c23b
TG		 1124 bfd_h_put_32 (abfd, header->magic, raw.magic);
1125 bfd_h_put_32 (abfd, header->cputype, raw.cputype);
1126 bfd_h_put_32 (abfd, header->cpusubtype, raw.cpusubtype);
1127 bfd_h_put_32 (abfd, header->filetype, raw.filetype);
1128 bfd_h_put_32 (abfd, header->ncmds, raw.ncmds);
1129 bfd_h_put_32 (abfd, header->sizeofcmds, raw.sizeofcmds);
1130 bfd_h_put_32 (abfd, header->flags, raw.flags);
116c20d2 1131
c2f09c75 1132 if (mach_o_wide_p (header))
46d1c23b 1133 bfd_h_put_32 (abfd, header->reserved, raw.reserved);
1e8a024a 1134
c2f09c75 1135 if (bfd_seek (abfd, 0, SEEK_SET) != 0
46d1c23b 1136 || bfd_bwrite (&raw, size, abfd) != size)
154a1ee5 1137 return FALSE;
116c20d2 1138
154a1ee5 1139 return TRUE;
116c20d2
NC		 1140}
1141
452216ab 1142static bfd_boolean
ab273af8 1143bfd_mach_o_write_thread (bfd *abfd, bfd_mach_o_load_command *command)
116c20d2
NC		 1144{
1145 bfd_mach_o_thread_command *cmd = &command->command.thread;
1146 unsigned int i;
46d1c23b 1147 struct mach_o_thread_command_external raw;
92bc0e80 1148 unsigned int offset;
116c20d2
NC		 1149
1150 BFD_ASSERT ((command->type == BFD_MACH_O_LC_THREAD)
1151 || (command->type == BFD_MACH_O_LC_UNIXTHREAD));
1152
c9ffd2ea 1153 offset = BFD_MACH_O_LC_SIZE;
116c20d2
NC		 1154 for (i = 0; i < cmd->nflavours; i++)
1155 {
1156 BFD_ASSERT ((cmd->flavours[i].size % 4) == 0);
46d1c23b 1157 BFD_ASSERT (cmd->flavours[i].offset ==
07d6d2b8 1158 (command->offset + offset + BFD_MACH_O_LC_SIZE));
116c20d2 1159
46d1c23b
TG		 1160 bfd_h_put_32 (abfd, cmd->flavours[i].flavour, raw.flavour);
1161 bfd_h_put_32 (abfd, (cmd->flavours[i].size / 4), raw.count);
116c20d2 1162
c2f09c75 1163 if (bfd_seek (abfd, command->offset + offset, SEEK_SET) != 0
07d6d2b8 1164 || bfd_bwrite (&raw, sizeof (raw), abfd) != sizeof (raw))
452216ab 1165 return FALSE;
116c20d2 1166
46d1c23b 1167 offset += cmd->flavours[i].size + sizeof (raw);
116c20d2
NC		 1168 }
1169
452216ab 1170 return TRUE;
116c20d2
NC		 1171}
1172
c9ffd2ea
TG		 1173static bfd_boolean
1174bfd_mach_o_write_dylinker (bfd *abfd, bfd_mach_o_load_command *command)
1175{
1176 bfd_mach_o_dylinker_command *cmd = &command->command.dylinker;
1177 struct mach_o_str_command_external raw;
1178 unsigned int namelen;
1179
1180 bfd_h_put_32 (abfd, cmd->name_offset, raw.str);
1181
1182 if (bfd_seek (abfd, command->offset + BFD_MACH_O_LC_SIZE, SEEK_SET) != 0
1183 || bfd_bwrite (&raw, sizeof (raw), abfd) != sizeof (raw))
1184 return FALSE;
1185
1186 namelen = strlen (cmd->name_str) + 1;
1187 if (bfd_bwrite (cmd->name_str, namelen, abfd) != namelen)
1188 return FALSE;
1189
1190 if (bfd_mach_o_pad_command (abfd, namelen) < 0)
1191 return FALSE;
1192
1193 return TRUE;
1194}
1195
1196static bfd_boolean
1197bfd_mach_o_write_dylib (bfd *abfd, bfd_mach_o_load_command *command)
1198{
1199 bfd_mach_o_dylib_command *cmd = &command->command.dylib;
1200 struct mach_o_dylib_command_external raw;
1201 unsigned int namelen;
1202
1203 bfd_h_put_32 (abfd, cmd->name_offset, raw.name);
1204 bfd_h_put_32 (abfd, cmd->timestamp, raw.timestamp);
1205 bfd_h_put_32 (abfd, cmd->current_version, raw.current_version);
1206 bfd_h_put_32 (abfd, cmd->compatibility_version, raw.compatibility_version);
1207
1208 if (bfd_seek (abfd, command->offset + BFD_MACH_O_LC_SIZE, SEEK_SET) != 0
1209 || bfd_bwrite (&raw, sizeof (raw), abfd) != sizeof (raw))
1210 return FALSE;
1211
1212 namelen = strlen (cmd->name_str) + 1;
1213 if (bfd_bwrite (cmd->name_str, namelen, abfd) != namelen)
1214 return FALSE;
1215
1216 if (bfd_mach_o_pad_command (abfd, namelen) < 0)
1217 return FALSE;
1218
1219 return TRUE;
1220}
1221
1222static bfd_boolean
1223bfd_mach_o_write_main (bfd *abfd, bfd_mach_o_load_command *command)
1224{
1225 bfd_mach_o_main_command *cmd = &command->command.main;
1226 struct mach_o_entry_point_command_external raw;
1227
1228 bfd_h_put_64 (abfd, cmd->entryoff, raw.entryoff);
1229 bfd_h_put_64 (abfd, cmd->stacksize, raw.stacksize);
1230
1231 if (bfd_seek (abfd, command->offset + BFD_MACH_O_LC_SIZE, SEEK_SET) != 0
1232 || bfd_bwrite (&raw, sizeof (raw), abfd) != sizeof (raw))
1233 return FALSE;
1234
1235 return TRUE;
1236}
1237
1238static bfd_boolean
1239bfd_mach_o_write_dyld_info (bfd *abfd, bfd_mach_o_load_command *command)
1240{
1241 bfd_mach_o_dyld_info_command *cmd = &command->command.dyld_info;
1242 struct mach_o_dyld_info_command_external raw;
1243
1244 bfd_h_put_32 (abfd, cmd->rebase_off, raw.rebase_off);
1245 bfd_h_put_32 (abfd, cmd->rebase_size, raw.rebase_size);
1246 bfd_h_put_32 (abfd, cmd->bind_off, raw.bind_off);
1247 bfd_h_put_32 (abfd, cmd->bind_size, raw.bind_size);
1248 bfd_h_put_32 (abfd, cmd->weak_bind_off, raw.weak_bind_off);
1249 bfd_h_put_32 (abfd, cmd->weak_bind_size, raw.weak_bind_size);
1250 bfd_h_put_32 (abfd, cmd->lazy_bind_off, raw.lazy_bind_off);
1251 bfd_h_put_32 (abfd, cmd->lazy_bind_size, raw.lazy_bind_size);
1252 bfd_h_put_32 (abfd, cmd->export_off, raw.export_off);
1253 bfd_h_put_32 (abfd, cmd->export_size, raw.export_size);
1254
1255 if (bfd_seek (abfd, command->offset + BFD_MACH_O_LC_SIZE, SEEK_SET) != 0
1256 || bfd_bwrite (&raw, sizeof (raw), abfd) != sizeof (raw))
1257 return FALSE;
1258
1259 if (cmd->rebase_size != 0)
1260 if (bfd_seek (abfd, cmd->rebase_off, SEEK_SET) != 0
1261 || (bfd_bwrite (cmd->rebase_content, cmd->rebase_size, abfd) !=
1262 cmd->rebase_size))
1263 return FALSE;
1264
1265 if (cmd->bind_size != 0)
1266 if (bfd_seek (abfd, cmd->bind_off, SEEK_SET) != 0
1267 || (bfd_bwrite (cmd->bind_content, cmd->bind_size, abfd) !=
1268 cmd->bind_size))
1269 return FALSE;
1270
1271 if (cmd->weak_bind_size != 0)
1272 if (bfd_seek (abfd, cmd->weak_bind_off, SEEK_SET) != 0
1273 || (bfd_bwrite (cmd->weak_bind_content, cmd->weak_bind_size, abfd) !=
1274 cmd->weak_bind_size))
1275 return FALSE;
1276
1277 if (cmd->lazy_bind_size != 0)
1278 if (bfd_seek (abfd, cmd->lazy_bind_off, SEEK_SET) != 0
1279 || (bfd_bwrite (cmd->lazy_bind_content, cmd->lazy_bind_size, abfd) !=
1280 cmd->lazy_bind_size))
1281 return FALSE;
1282
1283 if (cmd->export_size != 0)
1284 if (bfd_seek (abfd, cmd->export_off, SEEK_SET) != 0
1285 || (bfd_bwrite (cmd->export_content, cmd->export_size, abfd) !=
1286 cmd->export_size))
1287 return FALSE;
1288
1289 return TRUE;
1290}
1291
92bc0e80
TG		 1292long
1293bfd_mach_o_get_reloc_upper_bound (bfd *abfd ATTRIBUTE_UNUSED,
07d6d2b8 1294 asection *asect)
92bc0e80
TG		 1295{
1296 return (asect->reloc_count + 1) * sizeof (arelent *);
1297}
1298
19765f52
IS		 1299/* In addition to the need to byte-swap the symbol number, the bit positions
1300 of the fields in the relocation information vary per target endian-ness. */
1301
bcb51645 1302void
19765f52
IS		 1303bfd_mach_o_swap_in_non_scattered_reloc (bfd *abfd, bfd_mach_o_reloc_info *rel,
1304 unsigned char *fields)
1305{
1306 unsigned char info = fields[3];
1307
1308 if (bfd_big_endian (abfd))
1309 {
1310 rel->r_value = (fields[0] << 16) | (fields[1] << 8) | fields[2];
1311 rel->r_type = (info >> BFD_MACH_O_BE_TYPE_SHIFT) & BFD_MACH_O_TYPE_MASK;
1312 rel->r_pcrel = (info & BFD_MACH_O_BE_PCREL) ? 1 : 0;
68ffbac6 1313 rel->r_length = (info >> BFD_MACH_O_BE_LENGTH_SHIFT)
19765f52
IS		 1314 & BFD_MACH_O_LENGTH_MASK;
1315 rel->r_extern = (info & BFD_MACH_O_BE_EXTERN) ? 1 : 0;
1316 }
1317 else
1318 {
1319 rel->r_value = (fields[2] << 16) | (fields[1] << 8) | fields[0];
1320 rel->r_type = (info >> BFD_MACH_O_LE_TYPE_SHIFT) & BFD_MACH_O_TYPE_MASK;
1321 rel->r_pcrel = (info & BFD_MACH_O_LE_PCREL) ? 1 : 0;
68ffbac6 1322 rel->r_length = (info >> BFD_MACH_O_LE_LENGTH_SHIFT)
19765f52
IS		 1323 & BFD_MACH_O_LENGTH_MASK;
1324 rel->r_extern = (info & BFD_MACH_O_LE_EXTERN) ? 1 : 0;
1325 }
1326}
1327
bcb51645
TG		 1328/* Set syms_ptr_ptr and addend of RES. */
1329
1330bfd_boolean
1331bfd_mach_o_canonicalize_non_scattered_reloc (bfd *abfd,
1332 bfd_mach_o_reloc_info *reloc,
1333 arelent *res, asymbol **syms)
92bc0e80 1334{
046b007d 1335 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
bcb51645 1336 unsigned int num;
b32e07d7
TG		 1337 asymbol **sym;
1338
bcb51645
TG		 1339 /* Non-scattered relocation. */
1340 reloc->r_scattered = 0;
1341 res->addend = 0;
1342
1343 num = reloc->r_value;
1344
1345 if (reloc->r_extern)
1346 {
1347 /* PR 17512: file: 8396-1185-0.004. */
1348 if (num >= (unsigned) bfd_mach_o_count_symbols (abfd))
1349 sym = bfd_und_section_ptr->symbol_ptr_ptr;
1350 else if (syms == NULL)
1351 sym = bfd_und_section_ptr->symbol_ptr_ptr;
1352 else
1353 /* An external symbol number. */
1354 sym = syms + num;
1355 }
1356 else if (num == 0x00ffffff || num == 0)
1357 {
1358 /* The 'symnum' in a non-scattered PAIR is 0x00ffffff. But as this
1359 is generic code, we don't know wether this is really a PAIR.
1360 This value is almost certainly not a valid section number, hence
1361 this specific case to avoid an assertion failure.
1362 Target specific swap_reloc_in routine should adjust that. */
1363 sym = bfd_abs_section_ptr->symbol_ptr_ptr;
1364 }
1365 else
1366 {
1367 /* PR 17512: file: 006-2964-0.004. */
1368 if (num > mdata->nsects)
1369 return FALSE;
1370
1371 /* A section number. */
1372 sym = mdata->sections[num - 1]->bfdsection->symbol_ptr_ptr;
1373 /* For a symbol defined in section S, the addend (stored in the
1374 binary) contains the address of the section. To comply with
1375 bfd convention, subtract the section address.
1376 Use the address from the header, so that the user can modify
07d6d2b8 1377 the vma of the section. */
bcb51645
TG		 1378 res->addend = -mdata->sections[num - 1]->addr;
1379 }
1380
1381 /* Note: Pairs for PPC LO/HI/HA are not scattered, but contain the offset
1382 in the lower 16bits of the address value. So we have to find the
1383 'symbol' from the preceding reloc. We do this even though the
1384 section symbol is probably not needed here, because NULL symbol
1385 values cause an assert in generic BFD code. This must be done in
1386 the PPC swap_reloc_in routine. */
1387 res->sym_ptr_ptr = sym;
1388
1389 return TRUE;
1390}
1391
1392/* Do most of the work for canonicalize_relocs on RAW: create internal
1393 representation RELOC and set most fields of RES using symbol table SYMS.
1394 Each target still has to set the howto of RES and possibly adjust other
1395 fields.
1396 Previously the Mach-O hook point was simply swap_in, but some targets
1397 (like arm64) don't follow the generic rules (symnum is a value for the
1398 non-scattered relocation ADDEND). */
1399
1400bfd_boolean
1401bfd_mach_o_pre_canonicalize_one_reloc (bfd *abfd,
1402 struct mach_o_reloc_info_external *raw,
1403 bfd_mach_o_reloc_info *reloc,
1404 arelent *res, asymbol **syms)
1405{
1406 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
1407 bfd_vma addr;
1408
46d1c23b 1409 addr = bfd_get_32 (abfd, raw->r_address);
19765f52
IS		 1410 res->sym_ptr_ptr = NULL;
1411 res->addend = 0;
f4716ee2 1412
b32e07d7
TG		 1413 if (addr & BFD_MACH_O_SR_SCATTERED)
1414 {
1415 unsigned int j;
19765f52 1416 bfd_vma symnum = bfd_get_32 (abfd, raw->r_symbolnum);
b32e07d7 1417
19765f52 1418 /* Scattered relocation, can't be extern. */
bcb51645
TG		 1419 reloc->r_scattered = 1;
1420 reloc->r_extern = 0;
19765f52
IS		 1421
1422 /* Extract section and offset from r_value (symnum). */
bcb51645 1423 reloc->r_value = symnum;
19765f52
IS		 1424 /* FIXME: This breaks when a symbol in a reloc exactly follows the
1425 end of the data for the section (e.g. in a calculation of section
1426 data length). At present, the symbol will end up associated with
1427 the following section or, if it falls within alignment padding, as
1428 null - which will assert later. */
b32e07d7 1429 for (j = 0; j < mdata->nsects; j++)
07d6d2b8
AM		 1430 {
1431 bfd_mach_o_section *sect = mdata->sections[j];
1432 if (symnum >= sect->addr && symnum < sect->addr + sect->size)
1433 {
1434 res->sym_ptr_ptr = sect->bfdsection->symbol_ptr_ptr;
1435 res->addend = symnum - sect->addr;
1436 break;
1437 }
1438 }
19765f52
IS		 1439
1440 /* Extract the info and address fields from r_address. */
bcb51645
TG		 1441 reloc->r_type = BFD_MACH_O_GET_SR_TYPE (addr);
1442 reloc->r_length = BFD_MACH_O_GET_SR_LENGTH (addr);
1443 reloc->r_pcrel = addr & BFD_MACH_O_SR_PCREL;
1444 reloc->r_address = BFD_MACH_O_GET_SR_TYPE (addr);
19765f52 1445 res->address = BFD_MACH_O_GET_SR_ADDRESS (addr);
b32e07d7
TG		 1446 }
1447 else
1448 {
19765f52 1449 /* Non-scattered relocation. */
bcb51645
TG		 1450 reloc->r_scattered = 0;
1451 reloc->r_address = addr;
1452 res->address = addr;
f4716ee2 1453
19765f52 1454 /* The value and info fields have to be extracted dependent on target
07d6d2b8 1455 endian-ness. */
bcb51645 1456 bfd_mach_o_swap_in_non_scattered_reloc (abfd, reloc, raw->r_symbolnum);
19765f52 1457
bcb51645
TG		 1458 if (!bfd_mach_o_canonicalize_non_scattered_reloc (abfd, reloc,
1459 res, syms))
1460 return FALSE;
b32e07d7 1461 }
f4716ee2
TG		 1462
1463 /* We have set up a reloc with all the information present, so the swapper
1464 can modify address, value and addend fields, if necessary, to convey
1465 information in the generic BFD reloc that is mach-o specific. */
19765f52 1466
bcb51645 1467 return TRUE;
b32e07d7
TG		 1468}
1469
1470static int
1471bfd_mach_o_canonicalize_relocs (bfd *abfd, unsigned long filepos,
07d6d2b8
AM		 1472 unsigned long count,
1473 arelent *res, asymbol **syms)
b32e07d7 1474{
bcb51645 1475 bfd_mach_o_backend_data *bed = bfd_mach_o_get_backend_data (abfd);
92bc0e80 1476 unsigned long i;
46d1c23b 1477 struct mach_o_reloc_info_external *native_relocs;
92bc0e80
TG		 1478 bfd_size_type native_size;
1479
92bc0e80 1480 /* Allocate and read relocs. */
b32e07d7 1481 native_size = count * BFD_MACH_O_RELENT_SIZE;
033539e2 1482
64d29018
NC		 1483 /* PR 17512: file: 09477b57. */
1484 if (native_size < count)
1485 return -1;
1486
46d1c23b
TG		 1487 native_relocs =
1488 (struct mach_o_reloc_info_external *) bfd_malloc (native_size);
92bc0e80
TG		 1489 if (native_relocs == NULL)
1490 return -1;
1491
b32e07d7 1492 if (bfd_seek (abfd, filepos, SEEK_SET) != 0
92bc0e80 1493 || bfd_bread (native_relocs, native_size, abfd) != native_size)
b32e07d7
TG		 1494 goto err;
1495
1496 for (i = 0; i < count; i++)
92bc0e80 1497 {
bcb51645 1498 if (!(*bed->_bfd_mach_o_canonicalize_one_reloc)(abfd, &native_relocs[i],
ca4cf9b9 1499 &res[i], syms, res))
07d6d2b8 1500 goto err;
92bc0e80 1501 }
b32e07d7
TG		 1502 free (native_relocs);
1503 return i;
1504 err:
1505 free (native_relocs);
1506 return -1;
1507}
1508
1509long
1510bfd_mach_o_canonicalize_reloc (bfd *abfd, asection *asect,
07d6d2b8 1511 arelent **rels, asymbol **syms)
b32e07d7
TG		 1512{
1513 bfd_mach_o_backend_data *bed = bfd_mach_o_get_backend_data (abfd);
1514 unsigned long i;
1515 arelent *res;
1516
1517 if (asect->reloc_count == 0)
1518 return 0;
1519
1520 /* No need to go further if we don't know how to read relocs. */
bcb51645 1521 if (bed->_bfd_mach_o_canonicalize_one_reloc == NULL)
b32e07d7 1522 return 0;
92bc0e80 1523
dff55db0 1524 if (asect->relocation == NULL)
92bc0e80 1525 {
64d29018
NC		 1526 if (asect->reloc_count * sizeof (arelent) < asect->reloc_count)
1527 return -1;
dff55db0
TG		 1528 res = bfd_malloc (asect->reloc_count * sizeof (arelent));
1529 if (res == NULL)
07d6d2b8 1530 return -1;
dff55db0
TG		 1531
1532 if (bfd_mach_o_canonicalize_relocs (abfd, asect->rel_filepos,
07d6d2b8
AM		 1533 asect->reloc_count, res, syms) < 0)
1534 {
1535 free (res);
1536 return -1;
1537 }
dff55db0 1538 asect->relocation = res;
92bc0e80
TG		 1539 }
1540
dff55db0 1541 res = asect->relocation;
92bc0e80 1542 for (i = 0; i < asect->reloc_count; i++)
b32e07d7
TG		 1543 rels[i] = &res[i];
1544 rels[i] = NULL;
92bc0e80 1545
b32e07d7
TG		 1546 return i;
1547}
92bc0e80 1548
b32e07d7
TG		 1549long
1550bfd_mach_o_get_dynamic_reloc_upper_bound (bfd *abfd)
1551{
1552 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
92bc0e80 1553
b32e07d7
TG		 1554 if (mdata->dysymtab == NULL)
1555 return 1;
dff55db0 1556 return (mdata->dysymtab->nextrel + mdata->dysymtab->nlocrel + 1)
b32e07d7
TG		 1557 * sizeof (arelent *);
1558}
92bc0e80 1559
b32e07d7
TG		 1560long
1561bfd_mach_o_canonicalize_dynamic_reloc (bfd *abfd, arelent **rels,
07d6d2b8 1562 struct bfd_symbol **syms)
b32e07d7
TG		 1563{
1564 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
1565 bfd_mach_o_dysymtab_command *dysymtab = mdata->dysymtab;
1566 bfd_mach_o_backend_data *bed = bfd_mach_o_get_backend_data (abfd);
1567 unsigned long i;
1568 arelent *res;
1569
1570 if (dysymtab == NULL)
1571 return 0;
1572 if (dysymtab->nextrel == 0 && dysymtab->nlocrel == 0)
1573 return 0;
1574
1575 /* No need to go further if we don't know how to read relocs. */
bcb51645 1576 if (bed->_bfd_mach_o_canonicalize_one_reloc == NULL)
b32e07d7
TG		 1577 return 0;
1578
dff55db0 1579 if (mdata->dyn_reloc_cache == NULL)
b32e07d7 1580 {
64d29018
NC		 1581 if ((dysymtab->nextrel + dysymtab->nlocrel) * sizeof (arelent)
1582 < (dysymtab->nextrel + dysymtab->nlocrel))
1583 return -1;
1584
dff55db0 1585 res = bfd_malloc ((dysymtab->nextrel + dysymtab->nlocrel)
07d6d2b8 1586 * sizeof (arelent));
dff55db0 1587 if (res == NULL)
07d6d2b8 1588 return -1;
b32e07d7 1589
dff55db0 1590 if (bfd_mach_o_canonicalize_relocs (abfd, dysymtab->extreloff,
07d6d2b8
AM		 1591 dysymtab->nextrel, res, syms) < 0)
1592 {
1593 free (res);
1594 return -1;
1595 }
dff55db0
TG		 1596
1597 if (bfd_mach_o_canonicalize_relocs (abfd, dysymtab->locreloff,
07d6d2b8
AM		 1598 dysymtab->nlocrel,
1599 res + dysymtab->nextrel, syms) < 0)
1600 {
1601 free (res);
1602 return -1;
1603 }
dff55db0
TG		 1604
1605 mdata->dyn_reloc_cache = res;
b32e07d7
TG		 1606 }
1607
dff55db0 1608 res = mdata->dyn_reloc_cache;
b32e07d7
TG		 1609 for (i = 0; i < dysymtab->nextrel + dysymtab->nlocrel; i++)
1610 rels[i] = &res[i];
1611 rels[i] = NULL;
92bc0e80
TG		 1612 return i;
1613}
1614
19765f52
IS		 1615/* In addition to the need to byte-swap the symbol number, the bit positions
1616 of the fields in the relocation information vary per target endian-ness. */
1617
1618static void
1619bfd_mach_o_swap_out_non_scattered_reloc (bfd *abfd, unsigned char *fields,
1620 bfd_mach_o_reloc_info *rel)
1621{
1622 unsigned char info = 0;
1623
1624 BFD_ASSERT (rel->r_type <= 15);
1625 BFD_ASSERT (rel->r_length <= 3);
1626
1627 if (bfd_big_endian (abfd))
1628 {
1629 fields[0] = (rel->r_value >> 16) & 0xff;
1630 fields[1] = (rel->r_value >> 8) & 0xff;
1631 fields[2] = rel->r_value & 0xff;
1632 info |= rel->r_type << BFD_MACH_O_BE_TYPE_SHIFT;
1633 info |= rel->r_pcrel ? BFD_MACH_O_BE_PCREL : 0;
1634 info |= rel->r_length << BFD_MACH_O_BE_LENGTH_SHIFT;
1635 info |= rel->r_extern ? BFD_MACH_O_BE_EXTERN : 0;
1636 }
1637 else
1638 {
1639 fields[2] = (rel->r_value >> 16) & 0xff;
1640 fields[1] = (rel->r_value >> 8) & 0xff;
1641 fields[0] = rel->r_value & 0xff;
1642 info |= rel->r_type << BFD_MACH_O_LE_TYPE_SHIFT;
1643 info |= rel->r_pcrel ? BFD_MACH_O_LE_PCREL : 0;
1644 info |= rel->r_length << BFD_MACH_O_LE_LENGTH_SHIFT;
1645 info |= rel->r_extern ? BFD_MACH_O_LE_EXTERN : 0;
1646 }
1647 fields[3] = info;
1648}
1649
92bc0e80 1650static bfd_boolean
ab273af8 1651bfd_mach_o_write_relocs (bfd *abfd, bfd_mach_o_section *section)
92bc0e80 1652{
92bc0e80
TG		 1653 unsigned int i;
1654 arelent **entries;
1655 asection *sec;
1656 bfd_mach_o_backend_data *bed = bfd_mach_o_get_backend_data (abfd);
1657
1658 sec = section->bfdsection;
1659 if (sec->reloc_count == 0)
1660 return TRUE;
1661
1662 if (bed->_bfd_mach_o_swap_reloc_out == NULL)
1663 return TRUE;
1664
92bc0e80
TG		 1665 if (bfd_seek (abfd, section->reloff, SEEK_SET) != 0)
1666 return FALSE;
1667
1668 /* Convert and write. */
1669 entries = section->bfdsection->orelocation;
1670 for (i = 0; i < section->nreloc; i++)
1671 {
1672 arelent *rel = entries[i];
46d1c23b 1673 struct mach_o_reloc_info_external raw;
92bc0e80
TG		 1674 bfd_mach_o_reloc_info info, *pinfo = &info;
1675
1676 /* Convert relocation to an intermediate representation. */
1677 if (!(*bed->_bfd_mach_o_swap_reloc_out) (rel, pinfo))
07d6d2b8 1678 return FALSE;
92bc0e80
TG		 1679
1680 /* Lower the relocation info. */
1681 if (pinfo->r_scattered)
07d6d2b8
AM		 1682 {
1683 unsigned long v;
1684
1685 v = BFD_MACH_O_SR_SCATTERED
1686 | (pinfo->r_pcrel ? BFD_MACH_O_SR_PCREL : 0)
1687 | BFD_MACH_O_SET_SR_LENGTH (pinfo->r_length)
1688 | BFD_MACH_O_SET_SR_TYPE (pinfo->r_type)
1689 | BFD_MACH_O_SET_SR_ADDRESS (pinfo->r_address);
1690 /* Note: scattered relocs have field in reverse order... */
1691 bfd_put_32 (abfd, v, raw.r_address);
1692 bfd_put_32 (abfd, pinfo->r_value, raw.r_symbolnum);
1693 }
92bc0e80 1694 else
07d6d2b8
AM		 1695 {
1696 bfd_put_32 (abfd, pinfo->r_address, raw.r_address);
1697 bfd_mach_o_swap_out_non_scattered_reloc (abfd, raw.r_symbolnum,
19765f52 1698 pinfo);
07d6d2b8 1699 }
92bc0e80 1700
46d1c23b 1701 if (bfd_bwrite (&raw, BFD_MACH_O_RELENT_SIZE, abfd)
07d6d2b8
AM		 1702 != BFD_MACH_O_RELENT_SIZE)
1703 return FALSE;
92bc0e80
TG		 1704 }
1705 return TRUE;
1706}
1707
452216ab 1708static bfd_boolean
ab273af8 1709bfd_mach_o_write_section_32 (bfd *abfd, bfd_mach_o_section *section)
116c20d2 1710{
46d1c23b
TG		 1711 struct mach_o_section_32_external raw;
1712
1713 memcpy (raw.sectname, section->sectname, 16);
72b5104c 1714 memcpy (raw.segname, section->segname, 16);
46d1c23b
TG		 1715 bfd_h_put_32 (abfd, section->addr, raw.addr);
1716 bfd_h_put_32 (abfd, section->size, raw.size);
1717 bfd_h_put_32 (abfd, section->offset, raw.offset);
1718 bfd_h_put_32 (abfd, section->align, raw.align);
1719 bfd_h_put_32 (abfd, section->reloff, raw.reloff);
1720 bfd_h_put_32 (abfd, section->nreloc, raw.nreloc);
1721 bfd_h_put_32 (abfd, section->flags, raw.flags);
1722 bfd_h_put_32 (abfd, section->reserved1, raw.reserved1);
1723 bfd_h_put_32 (abfd, section->reserved2, raw.reserved2);
1724
1725 if (bfd_bwrite (&raw, BFD_MACH_O_SECTION_SIZE, abfd)
92bc0e80 1726 != BFD_MACH_O_SECTION_SIZE)
452216ab 1727 return FALSE;
116c20d2 1728
452216ab 1729 return TRUE;
116c20d2
NC		 1730}
1731
452216ab 1732static bfd_boolean
ab273af8 1733bfd_mach_o_write_section_64 (bfd *abfd, bfd_mach_o_section *section)
116c20d2 1734{
46d1c23b
TG		 1735 struct mach_o_section_64_external raw;
1736
1737 memcpy (raw.sectname, section->sectname, 16);
1738 memcpy (raw.segname, section->segname, 16);
1739 bfd_h_put_64 (abfd, section->addr, raw.addr);
1740 bfd_h_put_64 (abfd, section->size, raw.size);
1741 bfd_h_put_32 (abfd, section->offset, raw.offset);
1742 bfd_h_put_32 (abfd, section->align, raw.align);
1743 bfd_h_put_32 (abfd, section->reloff, raw.reloff);
1744 bfd_h_put_32 (abfd, section->nreloc, raw.nreloc);
1745 bfd_h_put_32 (abfd, section->flags, raw.flags);
1746 bfd_h_put_32 (abfd, section->reserved1, raw.reserved1);
1747 bfd_h_put_32 (abfd, section->reserved2, raw.reserved2);
1748 bfd_h_put_32 (abfd, section->reserved3, raw.reserved3);
1749
1750 if (bfd_bwrite (&raw, BFD_MACH_O_SECTION_64_SIZE, abfd)
92bc0e80 1751 != BFD_MACH_O_SECTION_64_SIZE)
452216ab 1752 return FALSE;
116c20d2 1753
452216ab 1754 return TRUE;
1e8a024a
TG		 1755}
1756
452216ab 1757static bfd_boolean
ab273af8 1758bfd_mach_o_write_segment_32 (bfd *abfd, bfd_mach_o_load_command *command)
1e8a024a 1759{
46d1c23b 1760 struct mach_o_segment_command_32_external raw;
1e8a024a 1761 bfd_mach_o_segment_command *seg = &command->command.segment;
f1bde64c 1762 bfd_mach_o_section *sec;
1e8a024a 1763
c2f09c75
TG		 1764 BFD_ASSERT (command->type == BFD_MACH_O_LC_SEGMENT);
1765
f1bde64c
TG		 1766 for (sec = seg->sect_head; sec != NULL; sec = sec->next)
1767 if (!bfd_mach_o_write_relocs (abfd, sec))
452216ab 1768 return FALSE;
c2f09c75 1769
46d1c23b
TG		 1770 memcpy (raw.segname, seg->segname, 16);
1771 bfd_h_put_32 (abfd, seg->vmaddr, raw.vmaddr);
1772 bfd_h_put_32 (abfd, seg->vmsize, raw.vmsize);
1773 bfd_h_put_32 (abfd, seg->fileoff, raw.fileoff);
1774 bfd_h_put_32 (abfd, seg->filesize, raw.filesize);
1775 bfd_h_put_32 (abfd, seg->maxprot, raw.maxprot);
1776 bfd_h_put_32 (abfd, seg->initprot, raw.initprot);
1777 bfd_h_put_32 (abfd, seg->nsects, raw.nsects);
1778 bfd_h_put_32 (abfd, seg->flags, raw.flags);
68ffbac6 1779
46d1c23b
TG		 1780 if (bfd_seek (abfd, command->offset + BFD_MACH_O_LC_SIZE, SEEK_SET) != 0
1781 || bfd_bwrite (&raw, sizeof (raw), abfd) != sizeof (raw))
452216ab 1782 return FALSE;
1e8a024a 1783
f1bde64c 1784 for (sec = seg->sect_head; sec != NULL; sec = sec->next)
452216ab
TG		 1785 if (!bfd_mach_o_write_section_32 (abfd, sec))
1786 return FALSE;
1e8a024a 1787
452216ab 1788 return TRUE;
116c20d2
NC		 1789}
1790
452216ab 1791static bfd_boolean
ab273af8 1792bfd_mach_o_write_segment_64 (bfd *abfd, bfd_mach_o_load_command *command)
1e8a024a 1793{
46d1c23b 1794 struct mach_o_segment_command_64_external raw;
c2f09c75 1795 bfd_mach_o_segment_command *seg = &command->command.segment;
f1bde64c 1796 bfd_mach_o_section *sec;
c2f09c75
TG		 1797
1798 BFD_ASSERT (command->type == BFD_MACH_O_LC_SEGMENT_64);
1799
f1bde64c
TG		 1800 for (sec = seg->sect_head; sec != NULL; sec = sec->next)
1801 if (!bfd_mach_o_write_relocs (abfd, sec))
452216ab 1802 return FALSE;
c2f09c75 1803
46d1c23b
TG		 1804 memcpy (raw.segname, seg->segname, 16);
1805 bfd_h_put_64 (abfd, seg->vmaddr, raw.vmaddr);
1806 bfd_h_put_64 (abfd, seg->vmsize, raw.vmsize);
1807 bfd_h_put_64 (abfd, seg->fileoff, raw.fileoff);
1808 bfd_h_put_64 (abfd, seg->filesize, raw.filesize);
1809 bfd_h_put_32 (abfd, seg->maxprot, raw.maxprot);
1810 bfd_h_put_32 (abfd, seg->initprot, raw.initprot);
1811 bfd_h_put_32 (abfd, seg->nsects, raw.nsects);
1812 bfd_h_put_32 (abfd, seg->flags, raw.flags);
1813
1814 if (bfd_seek (abfd, command->offset + BFD_MACH_O_LC_SIZE, SEEK_SET) != 0
1815 || bfd_bwrite (&raw, sizeof (raw), abfd) != sizeof (raw))
452216ab 1816 return FALSE;
c2f09c75 1817
f1bde64c 1818 for (sec = seg->sect_head; sec != NULL; sec = sec->next)
452216ab
TG		 1819 if (!bfd_mach_o_write_section_64 (abfd, sec))
1820 return FALSE;
c2f09c75 1821
452216ab 1822 return TRUE;
1e8a024a
TG		 1823}
1824
c2f09c75 1825static bfd_boolean
c9ffd2ea 1826bfd_mach_o_write_symtab_content (bfd *abfd, bfd_mach_o_symtab_command *sym)
116c20d2 1827{
046b007d 1828 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
116c20d2 1829 unsigned long i;
c2f09c75 1830 unsigned int wide = bfd_mach_o_wide_p (abfd);
c2f09c75
TG		 1831 struct bfd_strtab_hash *strtab;
1832 asymbol **symbols = bfd_get_outsymbols (abfd);
c9ffd2ea 1833 int padlen;
c2f09c75
TG		 1834
1835 /* Write the symbols first. */
1836 if (bfd_seek (abfd, sym->symoff, SEEK_SET) != 0)
1837 return FALSE;
1838
c2f09c75
TG		 1839 strtab = _bfd_stringtab_init ();
1840 if (strtab == NULL)
1841 return FALSE;
116c20d2 1842
a4551119
TG		 1843 if (sym->nsyms > 0)
1844 /* Although we don't strictly need to do this, for compatibility with
1845 Darwin system tools, actually output an empty string for the index
1846 0 entry. */
1847 _bfd_stringtab_add (strtab, "", TRUE, FALSE);
1848
116c20d2
NC		 1849 for (i = 0; i < sym->nsyms; i++)
1850 {
91d6fa6a 1851 bfd_size_type str_index;
92bc0e80 1852 bfd_mach_o_asymbol *s = (bfd_mach_o_asymbol *)symbols[i];
68ffbac6 1853
92bc0e80 1854 if (s->symbol.name == 0 || s->symbol.name[0] == '\0')
7f307238 1855 /* An index of 0 always means the empty string. */
07d6d2b8 1856 str_index = 0;
c2f09c75 1857 else
07d6d2b8
AM		 1858 {
1859 str_index = _bfd_stringtab_add (strtab, s->symbol.name, TRUE, FALSE);
7f307238 1860
07d6d2b8
AM		 1861 if (str_index == (bfd_size_type) -1)
1862 goto err;
1863 }
46d1c23b 1864
c2f09c75 1865 if (wide)
07d6d2b8
AM		 1866 {
1867 struct mach_o_nlist_64_external raw;
1868
1869 bfd_h_put_32 (abfd, str_index, raw.n_strx);
1870 bfd_h_put_8 (abfd, s->n_type, raw.n_type);
1871 bfd_h_put_8 (abfd, s->n_sect, raw.n_sect);
1872 bfd_h_put_16 (abfd, s->n_desc, raw.n_desc);
1873 bfd_h_put_64 (abfd, s->symbol.section->vma + s->symbol.value,
1874 raw.n_value);
1875
1876 if (bfd_bwrite (&raw, sizeof (raw), abfd) != sizeof (raw))
1877 goto err;
1878 }
c2f09c75 1879 else
07d6d2b8
AM		 1880 {
1881 struct mach_o_nlist_external raw;
116c20d2 1882
07d6d2b8
AM		 1883 bfd_h_put_32 (abfd, str_index, raw.n_strx);
1884 bfd_h_put_8 (abfd, s->n_type, raw.n_type);
1885 bfd_h_put_8 (abfd, s->n_sect, raw.n_sect);
1886 bfd_h_put_16 (abfd, s->n_desc, raw.n_desc);
1887 bfd_h_put_32 (abfd, s->symbol.section->vma + s->symbol.value,
1888 raw.n_value);
46d1c23b 1889
07d6d2b8
AM		 1890 if (bfd_bwrite (&raw, sizeof (raw), abfd) != sizeof (raw))
1891 goto err;
1892 }
116c20d2 1893 }
c2f09c75 1894 sym->strsize = _bfd_stringtab_size (strtab);
92bc0e80
TG		 1895 sym->stroff = mdata->filelen;
1896 mdata->filelen += sym->strsize;
116c20d2 1897
c9ffd2ea 1898 if (bfd_seek (abfd, sym->stroff, SEEK_SET) != 0)
64d29018 1899 goto err;
c9ffd2ea 1900
535b785f 1901 if (!_bfd_stringtab_emit (abfd, strtab))
c2f09c75 1902 goto err;
116c20d2 1903
c9ffd2ea
TG		 1904 /* Pad string table. */
1905 padlen = bfd_mach_o_pad4 (abfd, sym->strsize);
1906 if (padlen < 0)
1907 return FALSE;
1908 mdata->filelen += padlen;
1909 sym->strsize += padlen;
116c20d2 1910
c2f09c75 1911 return TRUE;
116c20d2 1912
c2f09c75
TG		 1913 err:
1914 _bfd_stringtab_free (strtab);
64d29018 1915 sym->strsize = 0;
c2f09c75 1916 return FALSE;
116c20d2
NC		 1917}
1918
c9ffd2ea
TG		 1919static bfd_boolean
1920bfd_mach_o_write_symtab (bfd *abfd, bfd_mach_o_load_command *command)
1921{
1922 bfd_mach_o_symtab_command *sym = &command->command.symtab;
1923 struct mach_o_symtab_command_external raw;
1924
1925 BFD_ASSERT (command->type == BFD_MACH_O_LC_SYMTAB);
1926
1927 /* The command. */
1928 bfd_h_put_32 (abfd, sym->symoff, raw.symoff);
1929 bfd_h_put_32 (abfd, sym->nsyms, raw.nsyms);
1930 bfd_h_put_32 (abfd, sym->stroff, raw.stroff);
1931 bfd_h_put_32 (abfd, sym->strsize, raw.strsize);
1932
1933 if (bfd_seek (abfd, command->offset + BFD_MACH_O_LC_SIZE, SEEK_SET) != 0
1934 || bfd_bwrite (&raw, sizeof (raw), abfd) != sizeof (raw))
1935 return FALSE;
1936
1937 return TRUE;
1938}
1939
1940/* Count the number of indirect symbols in the image.
1941 Requires that the sections are in their final order. */
1942
1943static unsigned int
1944bfd_mach_o_count_indirect_symbols (bfd *abfd, bfd_mach_o_data_struct *mdata)
1945{
1946 unsigned int i;
1947 unsigned int nisyms = 0;
1948
1949 for (i = 0; i < mdata->nsects; ++i)
1950 {
1951 bfd_mach_o_section *sec = mdata->sections[i];
1952
1953 switch (sec->flags & BFD_MACH_O_SECTION_TYPE_MASK)
1954 {
1955 case BFD_MACH_O_S_NON_LAZY_SYMBOL_POINTERS:
1956 case BFD_MACH_O_S_LAZY_SYMBOL_POINTERS:
1957 case BFD_MACH_O_S_SYMBOL_STUBS:
1958 nisyms += bfd_mach_o_section_get_nbr_indirect (abfd, sec);
1959 break;
1960 default:
1961 break;
1962 }
1963 }
1964 return nisyms;
1965}
1966
1967/* Create the dysymtab. */
1968
1969static bfd_boolean
1970bfd_mach_o_build_dysymtab (bfd *abfd, bfd_mach_o_dysymtab_command *cmd)
1971{
1972 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
1973
1974 /* TODO:
1975 We are not going to try and fill these in yet and, moreover, we are
1976 going to bail if they are already set. */
1977 if (cmd->nmodtab != 0
1978 || cmd->ntoc != 0
1979 || cmd->nextrefsyms != 0)
1980 {
4eca0228
AM		 1981 _bfd_error_handler (_("sorry: modtab, toc and extrefsyms are not yet"
1982 " implemented for dysymtab commands."));
c9ffd2ea
TG		 1983 return FALSE;
1984 }
1985
1986 cmd->ilocalsym = 0;
1987
1988 if (bfd_get_symcount (abfd) > 0)
1989 {
1990 asymbol **symbols = bfd_get_outsymbols (abfd);
1991 unsigned long i;
1992
1993 /* Count the number of each kind of symbol. */
1994 for (i = 0; i < bfd_get_symcount (abfd); ++i)
1995 {
1996 bfd_mach_o_asymbol *s = (bfd_mach_o_asymbol *)symbols[i];
1997 if (s->n_type & (BFD_MACH_O_N_EXT | BFD_MACH_O_N_PEXT))
1998 break;
1999 }
2000 cmd->nlocalsym = i;
2001 cmd->iextdefsym = i;
2002 for (; i < bfd_get_symcount (abfd); ++i)
2003 {
2004 bfd_mach_o_asymbol *s = (bfd_mach_o_asymbol *)symbols[i];
2005 if ((s->n_type & BFD_MACH_O_N_TYPE) == BFD_MACH_O_N_UNDF)
2006 break;
2007 }
2008 cmd->nextdefsym = i - cmd->nlocalsym;
2009 cmd->iundefsym = cmd->nextdefsym + cmd->iextdefsym;
2010 cmd->nundefsym = bfd_get_symcount (abfd)
2011 - cmd->nlocalsym
2012 - cmd->nextdefsym;
2013 }
2014 else
2015 {
2016 cmd->nlocalsym = 0;
2017 cmd->iextdefsym = 0;
2018 cmd->nextdefsym = 0;
2019 cmd->iundefsym = 0;
2020 cmd->nundefsym = 0;
2021 }
2022
2023 cmd->nindirectsyms = bfd_mach_o_count_indirect_symbols (abfd, mdata);
2024 if (cmd->nindirectsyms > 0)
2025 {
2026 unsigned i;
2027 unsigned n;
2028
2029 mdata->filelen = FILE_ALIGN (mdata->filelen, 2);
2030 cmd->indirectsymoff = mdata->filelen;
2031 mdata->filelen += cmd->nindirectsyms * 4;
2032
64d29018
NC		 2033 if (cmd->nindirectsyms * 4 < cmd->nindirectsyms)
2034 return FALSE;
c9ffd2ea
TG		 2035 cmd->indirect_syms = bfd_zalloc (abfd, cmd->nindirectsyms * 4);
2036 if (cmd->indirect_syms == NULL)
07d6d2b8 2037 return FALSE;
c9ffd2ea
TG		 2038
2039 n = 0;
2040 for (i = 0; i < mdata->nsects; ++i)
2041 {
2042 bfd_mach_o_section *sec = mdata->sections[i];
2043
2044 switch (sec->flags & BFD_MACH_O_SECTION_TYPE_MASK)
2045 {
2046 case BFD_MACH_O_S_NON_LAZY_SYMBOL_POINTERS:
2047 case BFD_MACH_O_S_LAZY_SYMBOL_POINTERS:
2048 case BFD_MACH_O_S_SYMBOL_STUBS:
2049 {
2050 unsigned j, num;
2051 bfd_mach_o_asymbol **isyms = sec->indirect_syms;
2052
2053 num = bfd_mach_o_section_get_nbr_indirect (abfd, sec);
2054 if (isyms == NULL || num == 0)
2055 break;
2056 /* Record the starting index in the reserved1 field. */
2057 sec->reserved1 = n;
2058 for (j = 0; j < num; j++, n++)
2059 {
2060 if (isyms[j] == NULL)
07d6d2b8 2061 cmd->indirect_syms[n] = BFD_MACH_O_INDIRECT_SYM_LOCAL;
c9ffd2ea
TG		 2062 else if (isyms[j]->symbol.section == bfd_abs_section_ptr
2063 && ! (isyms[j]->n_type & BFD_MACH_O_N_EXT))
07d6d2b8 2064 cmd->indirect_syms[n] = BFD_MACH_O_INDIRECT_SYM_LOCAL
c9ffd2ea
TG		 2065 | BFD_MACH_O_INDIRECT_SYM_ABS;
2066 else
07d6d2b8 2067 cmd->indirect_syms[n] = isyms[j]->symbol.udata.i;
c9ffd2ea
TG		 2068 }
2069 }
2070 break;
2071 default:
2072 break;
2073 }
2074 }
2075 }
2076
2077 return TRUE;
2078}
2079
7f307238
IS		 2080/* Write a dysymtab command.
2081 TODO: Possibly coalesce writes of smaller objects. */
2082
2083static bfd_boolean
2084bfd_mach_o_write_dysymtab (bfd *abfd, bfd_mach_o_load_command *command)
2085{
2086 bfd_mach_o_dysymtab_command *cmd = &command->command.dysymtab;
2087
2088 BFD_ASSERT (command->type == BFD_MACH_O_LC_DYSYMTAB);
2089
2090 if (cmd->nmodtab != 0)
2091 {
2092 unsigned int i;
2093
2094 if (bfd_seek (abfd, cmd->modtaboff, SEEK_SET) != 0)
2095 return FALSE;
2096
2097 for (i = 0; i < cmd->nmodtab; i++)
2098 {
2099 bfd_mach_o_dylib_module *module = &cmd->dylib_module[i];
2100 unsigned int iinit;
2101 unsigned int ninit;
2102
2103 iinit = module->iinit & 0xffff;
2104 iinit |= ((module->iterm & 0xffff) << 16);
2105
2106 ninit = module->ninit & 0xffff;
2107 ninit |= ((module->nterm & 0xffff) << 16);
2108
2109 if (bfd_mach_o_wide_p (abfd))
2110 {
2111 struct mach_o_dylib_module_64_external w;
2112
2113 bfd_h_put_32 (abfd, module->module_name_idx, &w.module_name);
2114 bfd_h_put_32 (abfd, module->iextdefsym, &w.iextdefsym);
2115 bfd_h_put_32 (abfd, module->nextdefsym, &w.nextdefsym);
2116 bfd_h_put_32 (abfd, module->irefsym, &w.irefsym);
2117 bfd_h_put_32 (abfd, module->nrefsym, &w.nrefsym);
2118 bfd_h_put_32 (abfd, module->ilocalsym, &w.ilocalsym);
2119 bfd_h_put_32 (abfd, module->nlocalsym, &w.nlocalsym);
2120 bfd_h_put_32 (abfd, module->iextrel, &w.iextrel);
2121 bfd_h_put_32 (abfd, module->nextrel, &w.nextrel);
2122 bfd_h_put_32 (abfd, iinit, &w.iinit_iterm);
2123 bfd_h_put_32 (abfd, ninit, &w.ninit_nterm);
2124 bfd_h_put_64 (abfd, module->objc_module_info_addr,
2125 &w.objc_module_info_addr);
2126 bfd_h_put_32 (abfd, module->objc_module_info_size,
2127 &w.objc_module_info_size);
2128
2129 if (bfd_bwrite ((void *) &w, sizeof (w), abfd) != sizeof (w))
2130 return FALSE;
2131 }
2132 else
2133 {
2134 struct mach_o_dylib_module_external n;
2135
2136 bfd_h_put_32 (abfd, module->module_name_idx, &n.module_name);
2137 bfd_h_put_32 (abfd, module->iextdefsym, &n.iextdefsym);
2138 bfd_h_put_32 (abfd, module->nextdefsym, &n.nextdefsym);
2139 bfd_h_put_32 (abfd, module->irefsym, &n.irefsym);
2140 bfd_h_put_32 (abfd, module->nrefsym, &n.nrefsym);
2141 bfd_h_put_32 (abfd, module->ilocalsym, &n.ilocalsym);
2142 bfd_h_put_32 (abfd, module->nlocalsym, &n.nlocalsym);
2143 bfd_h_put_32 (abfd, module->iextrel, &n.iextrel);
2144 bfd_h_put_32 (abfd, module->nextrel, &n.nextrel);
2145 bfd_h_put_32 (abfd, iinit, &n.iinit_iterm);
2146 bfd_h_put_32 (abfd, ninit, &n.ninit_nterm);
2147 bfd_h_put_32 (abfd, module->objc_module_info_addr,
2148 &n.objc_module_info_addr);
2149 bfd_h_put_32 (abfd, module->objc_module_info_size,
2150 &n.objc_module_info_size);
2151
2152 if (bfd_bwrite ((void *) &n, sizeof (n), abfd) != sizeof (n))
2153 return FALSE;
2154 }
2155 }
2156 }
2157
2158 if (cmd->ntoc != 0)
2159 {
2160 unsigned int i;
2161
2162 if (bfd_seek (abfd, cmd->tocoff, SEEK_SET) != 0)
2163 return FALSE;
2164
2165 for (i = 0; i < cmd->ntoc; i++)
2166 {
2167 struct mach_o_dylib_table_of_contents_external raw;
2168 bfd_mach_o_dylib_table_of_content *toc = &cmd->dylib_toc[i];
2169
2170 bfd_h_put_32 (abfd, toc->symbol_index, &raw.symbol_index);
2171 bfd_h_put_32 (abfd, toc->module_index, &raw.module_index);
2172
2173 if (bfd_bwrite (&raw, sizeof (raw), abfd) != sizeof (raw))
2174 return FALSE;
2175 }
2176 }
68ffbac6 2177
7f307238
IS		 2178 if (cmd->nindirectsyms > 0)
2179 {
2180 unsigned int i;
2181
2182 if (bfd_seek (abfd, cmd->indirectsymoff, SEEK_SET) != 0)
2183 return FALSE;
2184
2185 for (i = 0; i < cmd->nindirectsyms; ++i)
2186 {
2187 unsigned char raw[4];
2188
2189 bfd_h_put_32 (abfd, cmd->indirect_syms[i], &raw);
2190 if (bfd_bwrite (raw, sizeof (raw), abfd) != sizeof (raw))
2191 return FALSE;
68ffbac6 2192 }
7f307238
IS		 2193 }
2194
2195 if (cmd->nextrefsyms != 0)
2196 {
2197 unsigned int i;
2198
2199 if (bfd_seek (abfd, cmd->extrefsymoff, SEEK_SET) != 0)
2200 return FALSE;
2201
2202 for (i = 0; i < cmd->nextrefsyms; i++)
2203 {
2204 unsigned long v;
2205 unsigned char raw[4];
2206 bfd_mach_o_dylib_reference *ref = &cmd->ext_refs[i];
2207
2208 /* Fields isym and flags are written as bit-fields, thus we need
2209 a specific processing for endianness. */
2210
2211 if (bfd_big_endian (abfd))
2212 {
2213 v = ((ref->isym & 0xffffff) << 8);
2214 v |= ref->flags & 0xff;
2215 }
2216 else
2217 {
2218 v = ref->isym & 0xffffff;
2219 v |= ((ref->flags & 0xff) << 24);
2220 }
2221
2222 bfd_h_put_32 (abfd, v, raw);
2223 if (bfd_bwrite (raw, sizeof (raw), abfd) != sizeof (raw))
2224 return FALSE;
2225 }
2226 }
2227
2228 /* The command. */
2229 if (bfd_seek (abfd, command->offset + BFD_MACH_O_LC_SIZE, SEEK_SET) != 0)
2230 return FALSE;
2231 else
2232 {
2233 struct mach_o_dysymtab_command_external raw;
2234
2235 bfd_h_put_32 (abfd, cmd->ilocalsym, &raw.ilocalsym);
2236 bfd_h_put_32 (abfd, cmd->nlocalsym, &raw.nlocalsym);
2237 bfd_h_put_32 (abfd, cmd->iextdefsym, &raw.iextdefsym);
2238 bfd_h_put_32 (abfd, cmd->nextdefsym, &raw.nextdefsym);
2239 bfd_h_put_32 (abfd, cmd->iundefsym, &raw.iundefsym);
2240 bfd_h_put_32 (abfd, cmd->nundefsym, &raw.nundefsym);
2241 bfd_h_put_32 (abfd, cmd->tocoff, &raw.tocoff);
2242 bfd_h_put_32 (abfd, cmd->ntoc, &raw.ntoc);
2243 bfd_h_put_32 (abfd, cmd->modtaboff, &raw.modtaboff);
2244 bfd_h_put_32 (abfd, cmd->nmodtab, &raw.nmodtab);
2245 bfd_h_put_32 (abfd, cmd->extrefsymoff, &raw.extrefsymoff);
2246 bfd_h_put_32 (abfd, cmd->nextrefsyms, &raw.nextrefsyms);
2247 bfd_h_put_32 (abfd, cmd->indirectsymoff, &raw.indirectsymoff);
2248 bfd_h_put_32 (abfd, cmd->nindirectsyms, &raw.nindirectsyms);
2249 bfd_h_put_32 (abfd, cmd->extreloff, &raw.extreloff);
2250 bfd_h_put_32 (abfd, cmd->nextrel, &raw.nextrel);
2251 bfd_h_put_32 (abfd, cmd->locreloff, &raw.locreloff);
2252 bfd_h_put_32 (abfd, cmd->nlocrel, &raw.nlocrel);
2253
2254 if (bfd_bwrite (&raw, sizeof (raw), abfd) != sizeof (raw))
2255 return FALSE;
2256 }
2257
2258 return TRUE;
2259}
2260
2261static unsigned
b22161d6 2262bfd_mach_o_primary_symbol_sort_key (bfd_mach_o_asymbol *s)
7f307238 2263{
b22161d6 2264 unsigned mtyp = s->n_type & BFD_MACH_O_N_TYPE;
68588f95
IS		 2265
2266 /* Just leave debug symbols where they are (pretend they are local, and
2267 then they will just be sorted on position). */
b22161d6 2268 if (s->n_type & BFD_MACH_O_N_STAB)
68588f95
IS		 2269 return 0;
2270
7f307238 2271 /* Local (we should never see an undefined local AFAICT). */
b22161d6 2272 if (! (s->n_type & (BFD_MACH_O_N_EXT | BFD_MACH_O_N_PEXT)))
7f307238
IS		 2273 return 0;
2274
2275 /* Common symbols look like undefined externs. */
68588f95 2276 if (mtyp == BFD_MACH_O_N_UNDF)
7f307238
IS		 2277 return 2;
2278
b22161d6 2279 /* A defined non-local, non-debug symbol. */
7f307238
IS		 2280 return 1;
2281}
2282
2283static int
2284bfd_mach_o_cf_symbols (const void *a, const void *b)
2285{
2286 bfd_mach_o_asymbol *sa = *(bfd_mach_o_asymbol **) a;
2287 bfd_mach_o_asymbol *sb = *(bfd_mach_o_asymbol **) b;
2288 unsigned int soa, sob;
2289
b22161d6
IS		 2290 soa = bfd_mach_o_primary_symbol_sort_key (sa);
2291 sob = bfd_mach_o_primary_symbol_sort_key (sb);
7f307238
IS		 2292 if (soa < sob)
2293 return -1;
2294
2295 if (soa > sob)
2296 return 1;
2297
68588f95 2298 /* If it's local or stab, just preserve the input order. */
7f307238
IS		 2299 if (soa == 0)
2300 {
2301 if (sa->symbol.udata.i < sb->symbol.udata.i)
07d6d2b8 2302 return -1;
7f307238 2303 if (sa->symbol.udata.i > sb->symbol.udata.i)
07d6d2b8 2304 return 1;
b22161d6
IS		 2305
2306 /* This is probably an error. */
7f307238
IS		 2307 return 0;
2308 }
2309
b22161d6
IS		 2310 /* The second sort key is name. */
2311 return strcmp (sa->symbol.name, sb->symbol.name);
7f307238
IS		 2312}
2313
2314/* Process the symbols.
2315
2316 This should be OK for single-module files - but it is not likely to work
2317 for multi-module shared libraries.
2318
2319 (a) If the application has not filled in the relevant mach-o fields, make
2320 an estimate.
2321
2322 (b) Order them, like this:
2323 ( i) local.
2324 (unsorted)
2325 ( ii) external defined
2326 (by name)
b22161d6 2327 (iii) external undefined/common
7f307238
IS		 2328 (by name)
2329 ( iv) common
2330 (by name)
b22161d6 2331*/
92bc0e80
TG		 2332
2333static bfd_boolean
b22161d6 2334bfd_mach_o_mangle_symbols (bfd *abfd)
92bc0e80
TG		 2335{
2336 unsigned long i;
2337 asymbol **symbols = bfd_get_outsymbols (abfd);
2338
7f307238
IS		 2339 if (symbols == NULL || bfd_get_symcount (abfd) == 0)
2340 return TRUE;
2341
92bc0e80
TG		 2342 for (i = 0; i < bfd_get_symcount (abfd); i++)
2343 {
2344 bfd_mach_o_asymbol *s = (bfd_mach_o_asymbol *)symbols[i];
2345
b22161d6
IS		 2346 /* We use this value, which is out-of-range as a symbol index, to signal
2347 that the mach-o-specific data are not filled in and need to be created
2348 from the bfd values. It is much preferable for the application to do
2349 this, since more meaningful diagnostics can be made that way. */
2350
2351 if (s->symbol.udata.i == SYM_MACHO_FIELDS_UNSET)
07d6d2b8
AM		 2352 {
2353 /* No symbol information has been set - therefore determine
2354 it from the bfd symbol flags/info. */
2355 if (s->symbol.section == bfd_abs_section_ptr)
2356 s->n_type = BFD_MACH_O_N_ABS;
2357 else if (s->symbol.section == bfd_und_section_ptr)
2358 {
2359 s->n_type = BFD_MACH_O_N_UNDF;
2360 if (s->symbol.flags & BSF_WEAK)
2361 s->n_desc |= BFD_MACH_O_N_WEAK_REF;
2362 /* mach-o automatically makes undefined symbols extern. */
7f307238 2363 s->n_type |= BFD_MACH_O_N_EXT;
b22161d6 2364 s->symbol.flags |= BSF_GLOBAL;
07d6d2b8
AM		 2365 }
2366 else if (s->symbol.section == bfd_com_section_ptr)
b22161d6 2367 {
07d6d2b8
AM		 2368 s->n_type = BFD_MACH_O_N_UNDF | BFD_MACH_O_N_EXT;
2369 s->symbol.flags |= BSF_GLOBAL;
2370 }
2371 else
2372 s->n_type = BFD_MACH_O_N_SECT;
68ffbac6 2373
07d6d2b8
AM		 2374 if (s->symbol.flags & BSF_GLOBAL)
2375 s->n_type |= BFD_MACH_O_N_EXT;
2376 }
92bc0e80 2377
7f307238 2378 /* Put the section index in, where required. */
68588f95 2379 if ((s->symbol.section != bfd_abs_section_ptr
07d6d2b8
AM		 2380 && s->symbol.section != bfd_und_section_ptr
2381 && s->symbol.section != bfd_com_section_ptr)
2382 || ((s->n_type & BFD_MACH_O_N_STAB) != 0
2383 && s->symbol.name == NULL))
707e555b 2384 s->n_sect = s->symbol.section->output_section->target_index;
92bc0e80 2385
b22161d6
IS		 2386 /* Number to preserve order for local and debug syms. */
2387 s->symbol.udata.i = i;
7f307238
IS		 2388 }
2389
b22161d6
IS		 2390 /* Sort the symbols. */
2391 qsort ((void *) symbols, (size_t) bfd_get_symcount (abfd),
2392 sizeof (asymbol *), bfd_mach_o_cf_symbols);
7f307238 2393
b22161d6
IS		 2394 for (i = 0; i < bfd_get_symcount (abfd); ++i)
2395 {
2396 bfd_mach_o_asymbol *s = (bfd_mach_o_asymbol *)symbols[i];
2397 s->symbol.udata.i = i; /* renumber. */
7f307238
IS		 2398 }
2399
2400 return TRUE;
2401}
2402
2403/* We build a flat table of sections, which can be re-ordered if necessary.
2404 Fill in the section number and other mach-o-specific data. */
2405
2406static bfd_boolean
2407bfd_mach_o_mangle_sections (bfd *abfd, bfd_mach_o_data_struct *mdata)
2408{
2409 asection *sec;
2410 unsigned target_index;
2411 unsigned nsect;
2412
2413 nsect = bfd_count_sections (abfd);
68ffbac6 2414
7f307238
IS		 2415 /* Don't do it if it's already set - assume the application knows what it's
2416 doing. */
2417 if (mdata->nsects == nsect
2418 && (mdata->nsects == 0 || mdata->sections != NULL))
2419 return TRUE;
2420
a1165289
NC		 2421 /* We need to check that this can be done... */
2422 if (nsect > 255)
2423 {
4eca0228
AM		 2424 _bfd_error_handler (_("mach-o: there are too many sections (%u)"
2425 " maximum is 255,\n"), nsect);
a1165289
NC		 2426 return FALSE;
2427 }
2428
7f307238 2429 mdata->nsects = nsect;
64d29018
NC		 2430 mdata->sections = bfd_alloc2 (abfd,
2431 mdata->nsects, sizeof (bfd_mach_o_section *));
7f307238
IS		 2432 if (mdata->sections == NULL)
2433 return FALSE;
2434
7f307238 2435 /* Create Mach-O sections.
68ffbac6 2436 Section type, attribute and align should have been set when the
7f307238
IS		 2437 section was created - either read in or specified. */
2438 target_index = 0;
2439 for (sec = abfd->sections; sec; sec = sec->next)
2440 {
2441 unsigned bfd_align = bfd_get_section_alignment (abfd, sec);
2442 bfd_mach_o_section *msect = bfd_mach_o_get_mach_o_section (sec);
2443
2444 mdata->sections[target_index] = msect;
2445
2446 msect->addr = bfd_get_section_vma (abfd, sec);
2447 msect->size = bfd_get_section_size (sec);
2448
68ffbac6 2449 /* Use the largest alignment set, in case it was bumped after the
7f307238
IS		 2450 section was created. */
2451 msect->align = msect->align > bfd_align ? msect->align : bfd_align;
2452
2453 msect->offset = 0;
2454 sec->target_index = ++target_index;
92bc0e80 2455 }
7f307238 2456
92bc0e80
TG		 2457 return TRUE;
2458}
2459
154a1ee5 2460bfd_boolean
116c20d2 2461bfd_mach_o_write_contents (bfd *abfd)
3af9a47b 2462{
046b007d 2463 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
c9ffd2ea
TG		 2464 bfd_mach_o_load_command *cmd;
2465 bfd_mach_o_symtab_command *symtab = NULL;
2466 bfd_mach_o_dysymtab_command *dysymtab = NULL;
2467 bfd_mach_o_segment_command *linkedit = NULL;
3af9a47b 2468
7f307238 2469 /* Make the commands, if not already present. */
c9ffd2ea
TG		 2470 if (!abfd->output_has_begun && !bfd_mach_o_build_commands (abfd))
2471 return FALSE;
2472 abfd->output_has_begun = TRUE;
92bc0e80 2473
c9ffd2ea 2474 /* Write the header. */
154a1ee5 2475 if (!bfd_mach_o_write_header (abfd, &mdata->header))
b34976b6 2476 return FALSE;
3af9a47b 2477
c9ffd2ea
TG		 2478 /* First pass: allocate the linkedit segment. */
2479 for (cmd = mdata->first_command; cmd != NULL; cmd = cmd->next)
2480 switch (cmd->type)
2481 {
2482 case BFD_MACH_O_LC_SEGMENT_64:
2483 case BFD_MACH_O_LC_SEGMENT:
2484 if (strcmp (cmd->command.segment.segname, "__LINKEDIT") == 0)
2485 linkedit = &cmd->command.segment;
2486 break;
2487 case BFD_MACH_O_LC_SYMTAB:
2488 symtab = &cmd->command.symtab;
2489 break;
2490 case BFD_MACH_O_LC_DYSYMTAB:
2491 dysymtab = &cmd->command.dysymtab;
2492 break;
2493 case BFD_MACH_O_LC_DYLD_INFO:
2494 {
2495 bfd_mach_o_dyld_info_command *di = &cmd->command.dyld_info;
2496
2497 if (di->rebase_size != 0)
2498 {
2499 di->rebase_off = mdata->filelen;
2500 mdata->filelen += di->rebase_size;
2501 }
2502 if (di->bind_size != 0)
2503 {
2504 di->bind_off = mdata->filelen;
2505 mdata->filelen += di->bind_size;
2506 }
2507 if (di->weak_bind_size != 0)
2508 {
2509 di->weak_bind_off = mdata->filelen;
2510 mdata->filelen += di->weak_bind_size;
2511 }
2512 if (di->lazy_bind_size != 0)
2513 {
2514 di->lazy_bind_off = mdata->filelen;
2515 mdata->filelen += di->lazy_bind_size;
2516 }
2517 if (di->export_size != 0)
2518 {
2519 di->export_off = mdata->filelen;
2520 mdata->filelen += di->export_size;
2521 }
2522 }
2523 break;
2524 case BFD_MACH_O_LC_LOAD_DYLIB:
2525 case BFD_MACH_O_LC_LOAD_DYLINKER:
2526 case BFD_MACH_O_LC_MAIN:
2527 /* Nothing to do. */
2528 break;
2529 default:
4eca0228 2530 _bfd_error_handler
d42c267e
AM		 2531 (_("unable to allocate data for load command %#x"),
2532 cmd->type);
c9ffd2ea
TG		 2533 break;
2534 }
2535
2536 /* Specially handle symtab and dysymtab. */
2537
2538 /* Pre-allocate the symbol table (but not the string table). The reason
2539 is that the dysymtab is after the symbol table but before the string
2540 table (required by the native strip tool). */
2541 if (symtab != NULL)
2542 {
2543 unsigned int symlen;
2544 unsigned int wide = bfd_mach_o_wide_p (abfd);
2545
2546 symlen = wide ? BFD_MACH_O_NLIST_64_SIZE : BFD_MACH_O_NLIST_SIZE;
2547
2548 /* Align for symbols. */
2549 mdata->filelen = FILE_ALIGN (mdata->filelen, wide ? 3 : 2);
2550 symtab->symoff = mdata->filelen;
2551
2552 symtab->nsyms = bfd_get_symcount (abfd);
2553 mdata->filelen += symtab->nsyms * symlen;
2554 }
2555
2556 /* Build the dysymtab. */
2557 if (dysymtab != NULL)
2558 if (!bfd_mach_o_build_dysymtab (abfd, dysymtab))
2559 return FALSE;
2560
2561 /* Write symtab and strtab. */
2562 if (symtab != NULL)
2563 if (!bfd_mach_o_write_symtab_content (abfd, symtab))
2564 return FALSE;
2565
2566 /* Adjust linkedit size. */
2567 if (linkedit != NULL)
2568 {
2569 /* bfd_vma pagemask = bfd_mach_o_get_backend_data (abfd)->page_size - 1; */
2570
2571 linkedit->vmsize = mdata->filelen - linkedit->fileoff;
2572 /* linkedit->vmsize = (linkedit->vmsize + pagemask) & ~pagemask; */
2573 linkedit->filesize = mdata->filelen - linkedit->fileoff;
2574
2575 linkedit->initprot = BFD_MACH_O_PROT_READ;
2576 linkedit->maxprot = BFD_MACH_O_PROT_READ | BFD_MACH_O_PROT_WRITE
2577 | BFD_MACH_O_PROT_EXECUTE;
2578 }
2579
2580 /* Second pass: write commands. */
2581 for (cmd = mdata->first_command; cmd != NULL; cmd = cmd->next)
3af9a47b 2582 {
46d1c23b 2583 struct mach_o_load_command_external raw;
3af9a47b
NC		 2584 unsigned long typeflag;
2585
c9ffd2ea 2586 typeflag = cmd->type | (cmd->type_required ? BFD_MACH_O_LC_REQ_DYLD : 0);
3af9a47b 2587
46d1c23b 2588 bfd_h_put_32 (abfd, typeflag, raw.cmd);
c9ffd2ea 2589 bfd_h_put_32 (abfd, cmd->len, raw.cmdsize);
3af9a47b 2590
c9ffd2ea 2591 if (bfd_seek (abfd, cmd->offset, SEEK_SET) != 0
07d6d2b8 2592 || bfd_bwrite (&raw, BFD_MACH_O_LC_SIZE, abfd) != 8)
b34976b6 2593 return FALSE;
3af9a47b 2594
c9ffd2ea 2595 switch (cmd->type)
3af9a47b
NC		 2596 {
2597 case BFD_MACH_O_LC_SEGMENT:
c9ffd2ea 2598 if (!bfd_mach_o_write_segment_32 (abfd, cmd))
1e8a024a
TG		 2599 return FALSE;
2600 break;
2601 case BFD_MACH_O_LC_SEGMENT_64:
c9ffd2ea 2602 if (!bfd_mach_o_write_segment_64 (abfd, cmd))
b34976b6 2603 return FALSE;
3af9a47b
NC		 2604 break;
2605 case BFD_MACH_O_LC_SYMTAB:
c9ffd2ea 2606 if (!bfd_mach_o_write_symtab (abfd, cmd))
b34976b6 2607 return FALSE;
3af9a47b 2608 break;
7f307238 2609 case BFD_MACH_O_LC_DYSYMTAB:
c9ffd2ea 2610 if (!bfd_mach_o_write_dysymtab (abfd, cmd))
7f307238
IS		 2611 return FALSE;
2612 break;
3af9a47b
NC		 2613 case BFD_MACH_O_LC_THREAD:
2614 case BFD_MACH_O_LC_UNIXTHREAD:
c9ffd2ea 2615 if (!bfd_mach_o_write_thread (abfd, cmd))
b34976b6 2616 return FALSE;
3af9a47b 2617 break;
3af9a47b 2618 case BFD_MACH_O_LC_LOAD_DYLIB:
c9ffd2ea
TG		 2619 if (!bfd_mach_o_write_dylib (abfd, cmd))
2620 return FALSE;
2621 break;
3af9a47b 2622 case BFD_MACH_O_LC_LOAD_DYLINKER:
c9ffd2ea
TG		 2623 if (!bfd_mach_o_write_dylinker (abfd, cmd))
2624 return FALSE;
2625 break;
2626 case BFD_MACH_O_LC_MAIN:
2627 if (!bfd_mach_o_write_main (abfd, cmd))
2628 return FALSE;
2629 break;
2630 case BFD_MACH_O_LC_DYLD_INFO:
2631 if (!bfd_mach_o_write_dyld_info (abfd, cmd))
2632 return FALSE;
3af9a47b
NC		 2633 break;
2634 default:
4eca0228 2635 _bfd_error_handler
d42c267e
AM		 2636 (_("unable to write unknown load command %#x"),
2637 cmd->type);
b34976b6 2638 return FALSE;
3af9a47b
NC		 2639 }
2640 }
2641
b34976b6 2642 return TRUE;
3af9a47b
NC		 2643}
2644
f1bde64c
TG		 2645static void
2646bfd_mach_o_append_section_to_segment (bfd_mach_o_segment_command *seg,
07d6d2b8 2647 bfd_mach_o_section *s)
f1bde64c 2648{
f1bde64c
TG		 2649 if (seg->sect_head == NULL)
2650 seg->sect_head = s;
2651 else
2652 seg->sect_tail->next = s;
2653 seg->sect_tail = s;
2654}
2655
2656/* Create section Mach-O flags from BFD flags. */
2657
2658static void
3cc27770
TG		 2659bfd_mach_o_set_section_flags_from_bfd (bfd *abfd ATTRIBUTE_UNUSED,
2660 asection *sec)
f1bde64c
TG		 2661{
2662 flagword bfd_flags;
2663 bfd_mach_o_section *s = bfd_mach_o_get_mach_o_section (sec);
2664
2665 /* Create default flags. */
2666 bfd_flags = bfd_get_section_flags (abfd, sec);
2667 if ((bfd_flags & SEC_CODE) == SEC_CODE)
2668 s->flags = BFD_MACH_O_S_ATTR_PURE_INSTRUCTIONS
2669 | BFD_MACH_O_S_ATTR_SOME_INSTRUCTIONS
2670 | BFD_MACH_O_S_REGULAR;
2671 else if ((bfd_flags & (SEC_ALLOC | SEC_LOAD)) == SEC_ALLOC)
2672 s->flags = BFD_MACH_O_S_ZEROFILL;
2673 else if (bfd_flags & SEC_DEBUGGING)
2674 s->flags = BFD_MACH_O_S_REGULAR | BFD_MACH_O_S_ATTR_DEBUG;
2675 else
2676 s->flags = BFD_MACH_O_S_REGULAR;
2677}
2678
7f307238 2679static bfd_boolean
c9ffd2ea 2680bfd_mach_o_build_obj_seg_command (bfd *abfd, bfd_mach_o_segment_command *seg)
7f307238 2681{
c9ffd2ea
TG		 2682 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
2683 unsigned int i, j;
7f307238 2684
7f307238 2685 seg->vmaddr = 0;
7f307238 2686 seg->fileoff = mdata->filelen;
c9ffd2ea
TG		 2687 seg->initprot = BFD_MACH_O_PROT_READ | BFD_MACH_O_PROT_WRITE
2688 | BFD_MACH_O_PROT_EXECUTE;
2689 seg->maxprot = seg->initprot;
7f307238 2690
68ffbac6 2691 /* Append sections to the segment.
09903f4b
IS		 2692
2693 This is a little tedious, we have to honor the need to account zerofill
2694 sections after all the rest. This forces us to do the calculation of
68ffbac6 2695 total vmsize in three passes so that any alignment increments are
09903f4b 2696 properly accounted. */
7f307238
IS		 2697 for (i = 0; i < mdata->nsects; ++i)
2698 {
2699 bfd_mach_o_section *s = mdata->sections[i];
2700 asection *sec = s->bfdsection;
2701
09903f4b
IS		 2702 /* Although we account for zerofill section sizes in vm order, they are
2703 placed in the file in source sequence. */
c9ffd2ea 2704 bfd_mach_o_append_section_to_segment (seg, s);
e5081f2f 2705 s->offset = 0;
68ffbac6 2706
c9ffd2ea
TG		 2707 /* Zerofill sections have zero file size & offset, the only content
2708 written to the file is the symbols. */
e5081f2f 2709 if ((s->flags & BFD_MACH_O_SECTION_TYPE_MASK) == BFD_MACH_O_S_ZEROFILL
07d6d2b8 2710 || ((s->flags & BFD_MACH_O_SECTION_TYPE_MASK)
c9ffd2ea 2711 == BFD_MACH_O_S_GB_ZEROFILL))
07d6d2b8 2712 continue;
e5081f2f 2713
c9ffd2ea
TG		 2714 /* The Darwin system tools (in MH_OBJECT files, at least) always account
2715 sections, even those with zero size. */
e5081f2f 2716 if (s->size > 0)
c9ffd2ea 2717 {
09903f4b
IS		 2718 seg->vmsize = FILE_ALIGN (seg->vmsize, s->align);
2719 seg->vmsize += s->size;
2720
c9ffd2ea
TG		 2721 /* MH_OBJECT files have unaligned content. */
2722 if (1)
2723 {
2724 seg->filesize = FILE_ALIGN (seg->filesize, s->align);
07d6d2b8
AM		 2725 mdata->filelen = FILE_ALIGN (mdata->filelen, s->align);
2726 }
09903f4b
IS		 2727 seg->filesize += s->size;
2728
c9ffd2ea
TG		 2729 /* The system tools write even zero-sized sections with an offset
2730 field set to the current file position. */
07d6d2b8 2731 s->offset = mdata->filelen;
c9ffd2ea 2732 }
7f307238
IS		 2733
2734 sec->filepos = s->offset;
7f307238
IS		 2735 mdata->filelen += s->size;
2736 }
2737
3cc27770 2738 /* Now pass through again, for zerofill, only now we just update the
c9ffd2ea
TG		 2739 vmsize, and then for zerofill_GB. */
2740 for (j = 0; j < 2; j++)
09903f4b 2741 {
c9ffd2ea 2742 unsigned int stype;
68ffbac6 2743
c9ffd2ea
TG		 2744 if (j == 0)
2745 stype = BFD_MACH_O_S_ZEROFILL;
2746 else
2747 stype = BFD_MACH_O_S_GB_ZEROFILL;
09903f4b 2748
c9ffd2ea
TG		 2749 for (i = 0; i < mdata->nsects; ++i)
2750 {
2751 bfd_mach_o_section *s = mdata->sections[i];
2752
2753 if ((s->flags & BFD_MACH_O_SECTION_TYPE_MASK) != stype)
2754 continue;
2755
2756 if (s->size > 0)
2757 {
2758 seg->vmsize = FILE_ALIGN (seg->vmsize, s->align);
2759 seg->vmsize += s->size;
2760 }
09903f4b
IS		 2761 }
2762 }
bb76d940 2763
09903f4b 2764 /* Allocate space for the relocations. */
707e555b 2765 mdata->filelen = FILE_ALIGN (mdata->filelen, 2);
bb76d940
IS		 2766
2767 for (i = 0; i < mdata->nsects; ++i)
2768 {
2769 bfd_mach_o_section *ms = mdata->sections[i];
2770 asection *sec = ms->bfdsection;
68ffbac6 2771
c9ffd2ea
TG		 2772 ms->nreloc = sec->reloc_count;
2773 if (ms->nreloc == 0)
07d6d2b8 2774 {
c9ffd2ea 2775 /* Clear nreloc and reloff if there is no relocs. */
bb76d940
IS		 2776 ms->reloff = 0;
2777 continue;
07d6d2b8 2778 }
bb76d940
IS		 2779 sec->rel_filepos = mdata->filelen;
2780 ms->reloff = sec->rel_filepos;
2781 mdata->filelen += sec->reloc_count * BFD_MACH_O_RELENT_SIZE;
2782 }
7f307238
IS		 2783
2784 return TRUE;
2785}
2786
c9ffd2ea
TG		 2787static bfd_boolean
2788bfd_mach_o_build_exec_seg_command (bfd *abfd, bfd_mach_o_segment_command *seg)
50d10658 2789{
c9ffd2ea 2790 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
50d10658 2791 unsigned int i;
c9ffd2ea
TG		 2792 bfd_vma pagemask = bfd_mach_o_get_backend_data (abfd)->page_size - 1;
2793 bfd_vma vma;
2794 bfd_mach_o_section *s;
2795
2796 seg->vmsize = 0;
50d10658 2797
c9ffd2ea
TG		 2798 seg->fileoff = mdata->filelen;
2799 seg->maxprot = 0;
2800 seg->initprot = 0;
2801 seg->flags = 0;
2802
2803 /* Append sections to the segment. We assume they are properly ordered
2804 by vma (but we check that). */
2805 vma = 0;
50d10658
IS		 2806 for (i = 0; i < mdata->nsects; ++i)
2807 {
c9ffd2ea 2808 s = mdata->sections[i];
50d10658 2809
c9ffd2ea
TG		 2810 /* Consider only sections for this segment. */
2811 if (strcmp (seg->segname, s->segname) != 0)
2812 continue;
50d10658 2813
c9ffd2ea 2814 bfd_mach_o_append_section_to_segment (seg, s);
7f307238 2815
86eafac0
NC		 2816 if (s->addr < vma)
2817 {
4eca0228 2818 _bfd_error_handler
695344c0 2819 /* xgettext:c-format */
2dcf00ce
AM		 2820 (_("section address (%#" PRIx64 ") "
2821 "below start of segment (%#" PRIx64 ")"),
2822 (uint64_t) s->addr, (uint64_t) vma);
86eafac0
NC		 2823 return FALSE;
2824 }
2825
c9ffd2ea 2826 vma = s->addr + s->size;
7f307238
IS		 2827 }
2828
c9ffd2ea
TG		 2829 /* Set segment file offset: make it page aligned. */
2830 vma = seg->sect_head->addr;
2831 seg->vmaddr = vma & ~pagemask;
2832 if ((mdata->filelen & pagemask) > (vma & pagemask))
2833 mdata->filelen += pagemask + 1;
2834 seg->fileoff = mdata->filelen & ~pagemask;
2835 mdata->filelen = seg->fileoff + (vma & pagemask);
7f307238 2836
c9ffd2ea
TG		 2837 /* Set section file offset. */
2838 for (s = seg->sect_head; s != NULL; s = s->next)
7f307238 2839 {
c9ffd2ea
TG		 2840 asection *sec = s->bfdsection;
2841 flagword flags = bfd_get_section_flags (abfd, sec);
b22161d6 2842
c9ffd2ea
TG		 2843 /* Adjust segment size. */
2844 seg->vmsize = FILE_ALIGN (seg->vmsize, s->align);
2845 seg->vmsize += s->size;
2846
2847 /* File offset and length. */
2848 seg->filesize = FILE_ALIGN (seg->filesize, s->align);
2849
2850 if ((s->flags & BFD_MACH_O_SECTION_TYPE_MASK) != BFD_MACH_O_S_ZEROFILL
07d6d2b8 2851 && ((s->flags & BFD_MACH_O_SECTION_TYPE_MASK)
c9ffd2ea 2852 != BFD_MACH_O_S_GB_ZEROFILL))
b22161d6 2853 {
c9ffd2ea
TG		 2854 mdata->filelen = FILE_ALIGN (mdata->filelen, s->align);
2855
2856 s->offset = mdata->filelen;
2857 s->bfdsection->filepos = s->offset;
2858
2859 seg->filesize += s->size;
2860 mdata->filelen += s->size;
b22161d6 2861 }
c9ffd2ea 2862 else
b22161d6 2863 {
c9ffd2ea
TG		 2864 s->offset = 0;
2865 s->bfdsection->filepos = 0;
2866 }
2867
2868 /* Set protection. */
2869 if (flags & SEC_LOAD)
2870 {
2871 if (flags & SEC_CODE)
2872 seg->initprot |= BFD_MACH_O_PROT_READ | BFD_MACH_O_PROT_EXECUTE;
2873 if ((flags & (SEC_DATA | SEC_READONLY)) == SEC_DATA)
2874 seg->initprot |= BFD_MACH_O_PROT_WRITE | BFD_MACH_O_PROT_READ;
b22161d6 2875 }
c9ffd2ea
TG		 2876
2877 /* Relocs shouldn't appear in non-object files. */
2878 if (s->bfdsection->reloc_count != 0)
2879 return FALSE;
b22161d6 2880 }
c9ffd2ea
TG		 2881
2882 /* Set maxprot. */
2883 if (seg->initprot != 0)
2884 seg->maxprot = BFD_MACH_O_PROT_READ | BFD_MACH_O_PROT_WRITE
2885 | BFD_MACH_O_PROT_EXECUTE;
b22161d6 2886 else
c9ffd2ea 2887 seg->maxprot = 0;
b22161d6 2888
c9ffd2ea
TG		 2889 /* Round segment size (and file size). */
2890 seg->vmsize = (seg->vmsize + pagemask) & ~pagemask;
2891 seg->filesize = (seg->filesize + pagemask) & ~pagemask;
2892 mdata->filelen = (mdata->filelen + pagemask) & ~pagemask;
7f307238 2893
c9ffd2ea
TG		 2894 return TRUE;
2895}
68ffbac6 2896
c9ffd2ea
TG		 2897/* Layout the commands: set commands size and offset, set ncmds and sizeofcmds
2898 fields in header. */
68ffbac6 2899
86eafac0 2900static bfd_boolean
c9ffd2ea
TG		 2901bfd_mach_o_layout_commands (bfd_mach_o_data_struct *mdata)
2902{
2903 unsigned wide = mach_o_wide_p (&mdata->header);
2904 unsigned int hdrlen;
2905 ufile_ptr offset;
2906 bfd_mach_o_load_command *cmd;
2907 unsigned int align;
86eafac0 2908 bfd_boolean ret = TRUE;
c9ffd2ea
TG		 2909
2910 hdrlen = wide ? BFD_MACH_O_HEADER_64_SIZE : BFD_MACH_O_HEADER_SIZE;
2911 align = wide ? 8 - 1 : 4 - 1;
2912 offset = hdrlen;
2913 mdata->header.ncmds = 0;
50d10658 2914
c9ffd2ea
TG		 2915 for (cmd = mdata->first_command; cmd; cmd = cmd->next)
2916 {
2917 mdata->header.ncmds++;
2918 cmd->offset = offset;
68ffbac6 2919
c9ffd2ea
TG		 2920 switch (cmd->type)
2921 {
2922 case BFD_MACH_O_LC_SEGMENT_64:
2923 cmd->len = BFD_MACH_O_LC_SEGMENT_64_SIZE
2924 + BFD_MACH_O_SECTION_64_SIZE * cmd->command.segment.nsects;
2925 break;
2926 case BFD_MACH_O_LC_SEGMENT:
2927 cmd->len = BFD_MACH_O_LC_SEGMENT_SIZE
2928 + BFD_MACH_O_SECTION_SIZE * cmd->command.segment.nsects;
2929 break;
2930 case BFD_MACH_O_LC_SYMTAB:
2931 cmd->len = sizeof (struct mach_o_symtab_command_external)
2932 + BFD_MACH_O_LC_SIZE;
2933 break;
2934 case BFD_MACH_O_LC_DYSYMTAB:
2935 cmd->len = sizeof (struct mach_o_dysymtab_command_external)
2936 + BFD_MACH_O_LC_SIZE;
2937 break;
2938 case BFD_MACH_O_LC_LOAD_DYLIB:
2939 cmd->len = sizeof (struct mach_o_dylib_command_external)
2940 + BFD_MACH_O_LC_SIZE;
2941 cmd->command.dylib.name_offset = cmd->len;
2942 cmd->len += strlen (cmd->command.dylib.name_str);
2943 cmd->len = (cmd->len + align) & ~align;
2944 break;
2945 case BFD_MACH_O_LC_LOAD_DYLINKER:
2946 cmd->len = sizeof (struct mach_o_str_command_external)
2947 + BFD_MACH_O_LC_SIZE;
2948 cmd->command.dylinker.name_offset = cmd->len;
2949 cmd->len += strlen (cmd->command.dylinker.name_str);
2950 cmd->len = (cmd->len + align) & ~align;
2951 break;
2952 case BFD_MACH_O_LC_MAIN:
2953 cmd->len = sizeof (struct mach_o_entry_point_command_external)
2954 + BFD_MACH_O_LC_SIZE;
2955 break;
2956 case BFD_MACH_O_LC_DYLD_INFO:
2957 cmd->len = sizeof (struct mach_o_dyld_info_command_external)
2958 + BFD_MACH_O_LC_SIZE;
2959 break;
2960 default:
4eca0228 2961 _bfd_error_handler
d42c267e
AM		 2962 (_("unable to layout unknown load command %#x"),
2963 cmd->type);
86eafac0 2964 ret = FALSE;
c9ffd2ea 2965 break;
7f307238 2966 }
c9ffd2ea
TG		 2967
2968 BFD_ASSERT (cmd->len % (align + 1) == 0);
2969 offset += cmd->len;
7f307238 2970 }
c9ffd2ea
TG		 2971 mdata->header.sizeofcmds = offset - hdrlen;
2972 mdata->filelen = offset;
86eafac0
NC		 2973
2974 return ret;
c9ffd2ea 2975}
7f307238 2976
c9ffd2ea
TG		 2977/* Subroutine of bfd_mach_o_build_commands: set type, name and nsects of a
2978 segment. */
2979
2980static void
2981bfd_mach_o_init_segment (bfd_mach_o_data_struct *mdata,
2982 bfd_mach_o_load_command *cmd,
2983 const char *segname, unsigned int nbr_sect)
2984{
2985 bfd_mach_o_segment_command *seg = &cmd->command.segment;
2986 unsigned wide = mach_o_wide_p (&mdata->header);
2987
2988 /* Init segment command. */
2989 cmd->type = wide ? BFD_MACH_O_LC_SEGMENT_64 : BFD_MACH_O_LC_SEGMENT;
2990 cmd->type_required = FALSE;
2991
2992 strcpy (seg->segname, segname);
2993 seg->nsects = nbr_sect;
2994
2995 seg->vmaddr = 0;
2996 seg->vmsize = 0;
2997
2998 seg->fileoff = 0;
2999 seg->filesize = 0;
3000 seg->maxprot = 0;
3001 seg->initprot = 0;
3002 seg->flags = 0;
3003 seg->sect_head = NULL;
3004 seg->sect_tail = NULL;
7f307238
IS		 3005}
3006
3007/* Build Mach-O load commands (currently assuming an MH_OBJECT file).
3008 TODO: Other file formats, rebuilding symtab/dysymtab commands for strip
3009 and copy functionality. */
154a1ee5
TG		 3010
3011bfd_boolean
3012bfd_mach_o_build_commands (bfd *abfd)
3013{
046b007d 3014 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
bbd56171 3015 unsigned wide = mach_o_wide_p (&mdata->header);
c9ffd2ea
TG		 3016 unsigned int nbr_segcmd = 0;
3017 bfd_mach_o_load_command *commands;
3018 unsigned int nbr_commands;
bbd56171
IS		 3019 int symtab_idx = -1;
3020 int dysymtab_idx = -1;
c9ffd2ea
TG		 3021 int main_idx = -1;
3022 unsigned int i;
154a1ee5 3023
c9ffd2ea
TG		 3024 /* Return now if already built. */
3025 if (mdata->header.ncmds != 0)
3026 return TRUE;
154a1ee5 3027
7f307238 3028 /* Fill in the file type, if not already set. */
7f307238 3029 if (mdata->header.filetype == 0)
154a1ee5 3030 {
7f307238 3031 if (abfd->flags & EXEC_P)
07d6d2b8 3032 mdata->header.filetype = BFD_MACH_O_MH_EXECUTE;
7f307238 3033 else if (abfd->flags & DYNAMIC)
07d6d2b8 3034 mdata->header.filetype = BFD_MACH_O_MH_DYLIB;
7f307238 3035 else
07d6d2b8 3036 mdata->header.filetype = BFD_MACH_O_MH_OBJECT;
154a1ee5 3037 }
7f307238
IS		 3038
3039 /* If hasn't already been done, flatten sections list, and sort
3040 if/when required. Must be done before the symbol table is adjusted,
3041 since that depends on properly numbered sections. */
3042 if (mdata->nsects == 0 || mdata->sections == NULL)
3043 if (! bfd_mach_o_mangle_sections (abfd, mdata))
3044 return FALSE;
3045
3046 /* Order the symbol table, fill-in/check mach-o specific fields and
3047 partition out any indirect symbols. */
b22161d6 3048 if (!bfd_mach_o_mangle_symbols (abfd))
7f307238
IS		 3049 return FALSE;
3050
c9ffd2ea
TG		 3051 /* Segment commands. */
3052 if (mdata->header.filetype == BFD_MACH_O_MH_OBJECT)
3053 {
3054 /* Only one segment for all the sections. But the segment is
3055 optional if there is no sections. */
3056 nbr_segcmd = (mdata->nsects > 0) ? 1 : 0;
3057 }
3058 else
3059 {
3060 bfd_mach_o_section *prev_sect = NULL;
bbd56171 3061
c9ffd2ea
TG		 3062 /* One pagezero segment and one linkedit segment. */
3063 nbr_segcmd = 2;
bbd56171 3064
c9ffd2ea
TG		 3065 /* Create one segment for associated segment name in sections.
3066 Assume that sections with the same segment name are consecutive. */
3067 for (i = 0; i < mdata->nsects; i++)
3068 {
3069 bfd_mach_o_section *this_sect = mdata->sections[i];
bbd56171 3070
c9ffd2ea
TG		 3071 if (prev_sect == NULL
3072 || strcmp (prev_sect->segname, this_sect->segname) != 0)
3073 {
3074 nbr_segcmd++;
3075 prev_sect = this_sect;
3076 }
3077 }
154a1ee5 3078 }
154a1ee5 3079
c9ffd2ea
TG		 3080 nbr_commands = nbr_segcmd;
3081
3082 /* One command for the symbol table (only if there are symbols. */
7f307238 3083 if (bfd_get_symcount (abfd) > 0)
c9ffd2ea 3084 symtab_idx = nbr_commands++;
c2f09c75 3085
bbd56171
IS		 3086 /* FIXME:
3087 This is a rather crude test for whether we should build a dysymtab. */
3088 if (bfd_mach_o_should_emit_dysymtab ()
3089 && bfd_get_symcount (abfd))
3090 {
bbd56171
IS		 3091 /* If there should be a case where a dysymtab could be emitted without
3092 a symtab (seems improbable), this would need amending. */
c9ffd2ea 3093 dysymtab_idx = nbr_commands++;
bbd56171 3094 }
154a1ee5 3095
c9ffd2ea
TG		 3096 /* Add an entry point command. */
3097 if (mdata->header.filetype == BFD_MACH_O_MH_EXECUTE
3098 && bfd_get_start_address (abfd) != 0)
3099 main_idx = nbr_commands++;
c2f09c75 3100
bbd56171 3101 /* Well, we must have a header, at least. */
c9ffd2ea 3102 mdata->filelen = wide ? BFD_MACH_O_HEADER_64_SIZE : BFD_MACH_O_HEADER_SIZE;
f1bde64c 3103
bbd56171 3104 /* A bit unusual, but no content is valid;
7f307238 3105 as -n empty.s -o empty.o */
c9ffd2ea
TG		 3106 if (nbr_commands == 0)
3107 {
3108 /* Layout commands (well none...) and set headers command fields. */
86eafac0 3109 return bfd_mach_o_layout_commands (mdata);
c9ffd2ea 3110 }
f1bde64c 3111
c9ffd2ea
TG		 3112 /* Create commands for segments (and symtabs), prepend them. */
3113 commands = bfd_zalloc (abfd, nbr_commands * sizeof (bfd_mach_o_load_command));
3114 if (commands == NULL)
7f307238 3115 return FALSE;
c9ffd2ea
TG		 3116 for (i = 0; i < nbr_commands - 1; i++)
3117 commands[i].next = &commands[i + 1];
3118 commands[nbr_commands - 1].next = mdata->first_command;
3119 if (mdata->first_command == NULL)
3120 mdata->last_command = &commands[nbr_commands - 1];
3121 mdata->first_command = &commands[0];
3122
3123 if (mdata->header.filetype == BFD_MACH_O_MH_OBJECT && nbr_segcmd != 0)
3124 {
3125 /* For object file, there is only one segment. */
3126 bfd_mach_o_init_segment (mdata, &commands[0], "", mdata->nsects);
3127 }
3128 else if (nbr_segcmd != 0)
68ffbac6 3129 {
c9ffd2ea 3130 bfd_mach_o_load_command *cmd;
7f307238 3131
c9ffd2ea 3132 BFD_ASSERT (nbr_segcmd >= 2);
7f307238 3133
c9ffd2ea
TG		 3134 /* The pagezero. */
3135 cmd = &commands[0];
3136 bfd_mach_o_init_segment (mdata, cmd, "__PAGEZERO", 0);
3137
3138 /* Segments from sections. */
3139 cmd++;
3140 for (i = 0; i < mdata->nsects;)
7f307238 3141 {
c9ffd2ea
TG		 3142 const char *segname = mdata->sections[i]->segname;
3143 unsigned int nbr_sect = 1;
3144
3145 /* Count number of sections for this segment. */
3146 for (i++; i < mdata->nsects; i++)
3147 if (strcmp (mdata->sections[i]->segname, segname) == 0)
3148 nbr_sect++;
3149 else
3150 break;
3151
3152 bfd_mach_o_init_segment (mdata, cmd, segname, nbr_sect);
3153 cmd++;
7f307238 3154 }
bbd56171 3155
c9ffd2ea
TG		 3156 /* The linkedit. */
3157 bfd_mach_o_init_segment (mdata, cmd, "__LINKEDIT", 0);
7f307238 3158 }
f1bde64c 3159
bbd56171 3160 if (symtab_idx >= 0)
7f307238
IS		 3161 {
3162 /* Init symtab command. */
c9ffd2ea 3163 bfd_mach_o_load_command *cmd = &commands[symtab_idx];
68ffbac6 3164
bbd56171 3165 cmd->type = BFD_MACH_O_LC_SYMTAB;
bbd56171 3166 cmd->type_required = FALSE;
7f307238 3167 }
154a1ee5 3168
bbd56171
IS		 3169 /* If required, setup symtab command, see comment above about the quality
3170 of this test. */
3171 if (dysymtab_idx >= 0)
7f307238 3172 {
c9ffd2ea 3173 bfd_mach_o_load_command *cmd = &commands[dysymtab_idx];
bbd56171 3174
7f307238 3175 cmd->type = BFD_MACH_O_LC_DYSYMTAB;
7f307238 3176 cmd->type_required = FALSE;
c9ffd2ea
TG		 3177 }
3178
3179 /* Create the main command. */
3180 if (main_idx >= 0)
3181 {
3182 bfd_mach_o_load_command *cmd = &commands[main_idx];
7f307238 3183
c9ffd2ea
TG		 3184 cmd->type = BFD_MACH_O_LC_MAIN;
3185 cmd->type_required = TRUE;
3186
3187 cmd->command.main.entryoff = 0;
3188 cmd->command.main.stacksize = 0;
154a1ee5 3189 }
154a1ee5 3190
c9ffd2ea 3191 /* Layout commands. */
86eafac0
NC		 3192 if (! bfd_mach_o_layout_commands (mdata))
3193 return FALSE;
c9ffd2ea 3194
7f307238
IS		 3195 /* So, now we have sized the commands and the filelen set to that.
3196 Now we can build the segment command and set the section file offsets. */
c9ffd2ea
TG		 3197 if (mdata->header.filetype == BFD_MACH_O_MH_OBJECT)
3198 {
3199 for (i = 0; i < nbr_segcmd; i++)
3200 if (!bfd_mach_o_build_obj_seg_command
3201 (abfd, &commands[i].command.segment))
3202 return FALSE;
3203 }
3204 else
3205 {
3206 bfd_vma maxvma = 0;
7f307238 3207
c9ffd2ea
TG		 3208 /* Skip pagezero and linkedit segments. */
3209 for (i = 1; i < nbr_segcmd - 1; i++)
3210 {
3211 bfd_mach_o_segment_command *seg = &commands[i].command.segment;
3212
3213 if (!bfd_mach_o_build_exec_seg_command (abfd, seg))
3214 return FALSE;
3215
3216 if (seg->vmaddr + seg->vmsize > maxvma)
3217 maxvma = seg->vmaddr + seg->vmsize;
3218 }
3219
3220 /* Set the size of __PAGEZERO. */
3221 commands[0].command.segment.vmsize =
3222 commands[1].command.segment.vmaddr;
3223
3224 /* Set the vma and fileoff of __LINKEDIT. */
3225 commands[nbr_segcmd - 1].command.segment.vmaddr = maxvma;
3226 commands[nbr_segcmd - 1].command.segment.fileoff = mdata->filelen;
3227
3228 /* Set entry point (once segments have been laid out). */
3229 if (main_idx >= 0)
3230 commands[main_idx].command.main.entryoff =
3231 bfd_get_start_address (abfd) - commands[1].command.segment.vmaddr;
3232 }
7f307238 3233
154a1ee5
TG		 3234 return TRUE;
3235}
3236
3237/* Set the contents of a section. */
3238
3239bfd_boolean
3240bfd_mach_o_set_section_contents (bfd *abfd,
3241 asection *section,
3242 const void * location,
3243 file_ptr offset,
3244 bfd_size_type count)
3245{
3246 file_ptr pos;
3247
7f307238
IS		 3248 /* Trying to write the first section contents will trigger the creation of
3249 the load commands if they are not already present. */
c9ffd2ea 3250 if (!abfd->output_has_begun && !bfd_mach_o_build_commands (abfd))
154a1ee5
TG		 3251 return FALSE;
3252
3253 if (count == 0)
3254 return TRUE;
3255
3256 pos = section->filepos + offset;
3257 if (bfd_seek (abfd, pos, SEEK_SET) != 0
3258 || bfd_bwrite (location, count, abfd) != count)
3259 return FALSE;
3260
3261 return TRUE;
3262}
3263
3264int
116c20d2 3265bfd_mach_o_sizeof_headers (bfd *a ATTRIBUTE_UNUSED,
a6b96beb 3266 struct bfd_link_info *info ATTRIBUTE_UNUSED)
3af9a47b
NC		 3267{
3268 return 0;
3269}
3270
3271/* Make an empty symbol. This is required only because
3272 bfd_make_section_anyway wants to create a symbol for the section. */
3273
154a1ee5 3274asymbol *
116c20d2 3275bfd_mach_o_make_empty_symbol (bfd *abfd)
3af9a47b 3276{
d3ce72d0
NC		 3277 asymbol *new_symbol;
3278
3279 new_symbol = bfd_zalloc (abfd, sizeof (bfd_mach_o_asymbol));
3280 if (new_symbol == NULL)
3281 return new_symbol;
3282 new_symbol->the_bfd = abfd;
b22161d6 3283 new_symbol->udata.i = SYM_MACHO_FIELDS_UNSET;
d3ce72d0 3284 return new_symbol;
3af9a47b
NC		 3285}
3286
154a1ee5 3287static bfd_boolean
47daa70f 3288bfd_mach_o_read_header (bfd *abfd, file_ptr hdr_off, bfd_mach_o_header *header)
3af9a47b 3289{
46d1c23b 3290 struct mach_o_header_external raw;
1e8a024a 3291 unsigned int size;
edeb6e24 3292 bfd_vma (*get32) (const void *) = NULL;
3af9a47b 3293
1e8a024a 3294 /* Just read the magic number. */
47daa70f 3295 if (bfd_seek (abfd, hdr_off, SEEK_SET) != 0
46d1c23b 3296 || bfd_bread (raw.magic, sizeof (raw.magic), abfd) != 4)
154a1ee5 3297 return FALSE;
3af9a47b 3298
46d1c23b 3299 if (bfd_getb32 (raw.magic) == BFD_MACH_O_MH_MAGIC)
3af9a47b
NC		 3300 {
3301 header->byteorder = BFD_ENDIAN_BIG;
154a1ee5 3302 header->magic = BFD_MACH_O_MH_MAGIC;
1e8a024a 3303 header->version = 1;
3af9a47b
NC		 3304 get32 = bfd_getb32;
3305 }
46d1c23b 3306 else if (bfd_getl32 (raw.magic) == BFD_MACH_O_MH_MAGIC)
3af9a47b 3307 {
a95a4550 3308 header->byteorder = BFD_ENDIAN_LITTLE;
154a1ee5 3309 header->magic = BFD_MACH_O_MH_MAGIC;
1e8a024a
TG		 3310 header->version = 1;
3311 get32 = bfd_getl32;
3312 }
46d1c23b 3313 else if (bfd_getb32 (raw.magic) == BFD_MACH_O_MH_MAGIC_64)
1e8a024a
TG		 3314 {
3315 header->byteorder = BFD_ENDIAN_BIG;
154a1ee5 3316 header->magic = BFD_MACH_O_MH_MAGIC_64;
1e8a024a
TG		 3317 header->version = 2;
3318 get32 = bfd_getb32;
3319 }
46d1c23b 3320 else if (bfd_getl32 (raw.magic) == BFD_MACH_O_MH_MAGIC_64)
1e8a024a
TG		 3321 {
3322 header->byteorder = BFD_ENDIAN_LITTLE;
154a1ee5 3323 header->magic = BFD_MACH_O_MH_MAGIC_64;
1e8a024a 3324 header->version = 2;
3af9a47b
NC		 3325 get32 = bfd_getl32;
3326 }
3327 else
3328 {
3329 header->byteorder = BFD_ENDIAN_UNKNOWN;
154a1ee5 3330 return FALSE;
3af9a47b 3331 }
a95a4550 3332
1e8a024a 3333 /* Once the size of the header is known, read the full header. */
c2f09c75 3334 size = mach_o_wide_p (header) ?
154a1ee5 3335 BFD_MACH_O_HEADER_64_SIZE : BFD_MACH_O_HEADER_SIZE;
1e8a024a 3336
47daa70f 3337 if (bfd_seek (abfd, hdr_off, SEEK_SET) != 0
46d1c23b 3338 || bfd_bread (&raw, size, abfd) != size)
154a1ee5 3339 return FALSE;
1e8a024a 3340
46d1c23b
TG		 3341 header->cputype = (*get32) (raw.cputype);
3342 header->cpusubtype = (*get32) (raw.cpusubtype);
3343 header->filetype = (*get32) (raw.filetype);
3344 header->ncmds = (*get32) (raw.ncmds);
3345 header->sizeofcmds = (*get32) (raw.sizeofcmds);
3346 header->flags = (*get32) (raw.flags);
3af9a47b 3347
c2f09c75 3348 if (mach_o_wide_p (header))
46d1c23b 3349 header->reserved = (*get32) (raw.reserved);
facf03f2
TG		 3350 else
3351 header->reserved = 0;
1e8a024a 3352
154a1ee5 3353 return TRUE;
3af9a47b
NC		 3354}
3355
f1bde64c
TG		 3356bfd_boolean
3357bfd_mach_o_new_section_hook (bfd *abfd, asection *sec)
3358{
3359 bfd_mach_o_section *s;
a4551119 3360 unsigned bfdalign = bfd_get_section_alignment (abfd, sec);
f1bde64c
TG		 3361
3362 s = bfd_mach_o_get_mach_o_section (sec);
3363 if (s == NULL)
3364 {
3365 flagword bfd_flags;
a4551119 3366 static const mach_o_section_name_xlat * xlat;
f1bde64c
TG		 3367
3368 s = (bfd_mach_o_section *) bfd_zalloc (abfd, sizeof (*s));
3369 if (s == NULL)
3370 return FALSE;
3371 sec->used_by_bfd = s;
3372 s->bfdsection = sec;
3373
a4551119
TG		 3374 /* Create the Darwin seg/sect name pair from the bfd name.
3375 If this is a canonical name for which a specific paiting exists
3376 there will also be defined flags, type, attribute and alignment
3377 values. */
3378 xlat = bfd_mach_o_convert_section_name_to_mach_o (abfd, sec, s);
3379 if (xlat != NULL)
3380 {
3381 s->flags = xlat->macho_sectype | xlat->macho_secattr;
68ffbac6 3382 s->align = xlat->sectalign > bfdalign ? xlat->sectalign
a4551119 3383 : bfdalign;
a253d456 3384 (void) bfd_set_section_alignment (abfd, sec, s->align);
a4551119
TG		 3385 bfd_flags = bfd_get_section_flags (abfd, sec);
3386 if (bfd_flags == SEC_NO_FLAGS)
3387 bfd_set_section_flags (abfd, sec, xlat->bfd_flags);
3388 }
f1bde64c 3389 else
a4551119
TG		 3390 /* Create default flags. */
3391 bfd_mach_o_set_section_flags_from_bfd (abfd, sec);
f1bde64c
TG		 3392 }
3393
3394 return _bfd_generic_new_section_hook (abfd, sec);
3395}
3396
3397static void
3398bfd_mach_o_init_section_from_mach_o (bfd *abfd, asection *sec,
07d6d2b8 3399 unsigned long prot)
3af9a47b 3400{
117ed4f8 3401 flagword flags;
f1bde64c 3402 bfd_mach_o_section *section;
3af9a47b 3403
f1bde64c
TG		 3404 flags = bfd_get_section_flags (abfd, sec);
3405 section = bfd_mach_o_get_mach_o_section (sec);
3af9a47b 3406
a4551119
TG		 3407 /* TODO: see if we should use the xlat system for doing this by
3408 preference and fall back to this for unknown sections. */
3409
8462aec7 3410 if (flags == SEC_NO_FLAGS)
ef17cb22 3411 {
8462aec7
TG		 3412 /* Try to guess flags. */
3413 if (section->flags & BFD_MACH_O_S_ATTR_DEBUG)
07d6d2b8 3414 flags = SEC_DEBUGGING;
8462aec7 3415 else
07d6d2b8
AM		 3416 {
3417 flags = SEC_ALLOC;
3418 if ((section->flags & BFD_MACH_O_SECTION_TYPE_MASK)
3419 != BFD_MACH_O_S_ZEROFILL)
3420 {
3421 flags |= SEC_LOAD;
3422 if (prot & BFD_MACH_O_PROT_EXECUTE)
3423 flags |= SEC_CODE;
3424 if (prot & BFD_MACH_O_PROT_WRITE)
3425 flags |= SEC_DATA;
3426 else if (prot & BFD_MACH_O_PROT_READ)
3427 flags |= SEC_READONLY;
3428 }
3429 }
ef17cb22 3430 }
15e1c58a
TG		 3431 else
3432 {
8462aec7 3433 if ((flags & SEC_DEBUGGING) == 0)
07d6d2b8 3434 flags |= SEC_ALLOC;
15e1c58a 3435 }
8462aec7
TG		 3436
3437 if (section->offset != 0)
3438 flags |= SEC_HAS_CONTENTS;
92bc0e80
TG		 3439 if (section->nreloc != 0)
3440 flags |= SEC_RELOC;
3441
f1bde64c
TG		 3442 bfd_set_section_flags (abfd, sec, flags);
3443
3444 sec->vma = section->addr;
3445 sec->lma = section->addr;
3446 sec->size = section->size;
3447 sec->filepos = section->offset;
3448 sec->alignment_power = section->align;
3449 sec->segment_mark = 0;
3450 sec->reloc_count = section->nreloc;
3451 sec->rel_filepos = section->reloff;
3452}
3453
3454static asection *
3455bfd_mach_o_make_bfd_section (bfd *abfd,
07d6d2b8
AM		 3456 const unsigned char *segname,
3457 const unsigned char *sectname)
f1bde64c
TG		 3458{
3459 const char *sname;
3460 flagword flags;
a95a4550 3461
f1bde64c
TG		 3462 bfd_mach_o_convert_section_name_to_bfd
3463 (abfd, (const char *)segname, (const char *)sectname, &sname, &flags);
3464 if (sname == NULL)
3465 return NULL;
3af9a47b 3466
f1bde64c 3467 return bfd_make_section_anyway_with_flags (abfd, sname, flags);
3af9a47b
NC		 3468}
3469
f1bde64c 3470static asection *
47daa70f 3471bfd_mach_o_read_section_32 (bfd *abfd, unsigned long prot)
3af9a47b 3472{
46d1c23b 3473 struct mach_o_section_32_external raw;
f1bde64c
TG		 3474 asection *sec;
3475 bfd_mach_o_section *section;
3af9a47b 3476
47daa70f
TG		 3477 if (bfd_bread (&raw, BFD_MACH_O_SECTION_SIZE, abfd)
3478 != BFD_MACH_O_SECTION_SIZE)
f1bde64c 3479 return NULL;
a95a4550 3480
5a5cbf72 3481 sec = bfd_mach_o_make_bfd_section (abfd, raw.segname, raw.sectname);
f1bde64c
TG		 3482 if (sec == NULL)
3483 return NULL;
3484
3485 section = bfd_mach_o_get_mach_o_section (sec);
3486 memcpy (section->segname, raw.segname, sizeof (raw.segname));
3487 section->segname[BFD_MACH_O_SEGNAME_SIZE] = 0;
3488 memcpy (section->sectname, raw.sectname, sizeof (raw.sectname));
69499dca 3489 section->sectname[BFD_MACH_O_SECTNAME_SIZE] = 0;
46d1c23b
TG		 3490 section->addr = bfd_h_get_32 (abfd, raw.addr);
3491 section->size = bfd_h_get_32 (abfd, raw.size);
3492 section->offset = bfd_h_get_32 (abfd, raw.offset);
3493 section->align = bfd_h_get_32 (abfd, raw.align);
c86934ce
NC		 3494 /* PR 17512: file: 0017eb76. */
3495 if (section->align > 64)
3496 {
4eca0228 3497 _bfd_error_handler
d42c267e 3498 (_("bfd_mach_o_read_section_32: overlarge alignment value: %#lx, "
4eca0228 3499 "using 32 instead"), section->align);
c86934ce
NC		 3500 section->align = 32;
3501 }
46d1c23b
TG		 3502 section->reloff = bfd_h_get_32 (abfd, raw.reloff);
3503 section->nreloc = bfd_h_get_32 (abfd, raw.nreloc);
3504 section->flags = bfd_h_get_32 (abfd, raw.flags);
3505 section->reserved1 = bfd_h_get_32 (abfd, raw.reserved1);
3506 section->reserved2 = bfd_h_get_32 (abfd, raw.reserved2);
1e8a024a 3507 section->reserved3 = 0;
1e8a024a 3508
f1bde64c 3509 bfd_mach_o_init_section_from_mach_o (abfd, sec, prot);
1e8a024a 3510
f1bde64c 3511 return sec;
1e8a024a
TG		 3512}
3513
f1bde64c 3514static asection *
47daa70f 3515bfd_mach_o_read_section_64 (bfd *abfd, unsigned long prot)
1e8a024a 3516{
46d1c23b 3517 struct mach_o_section_64_external raw;
f1bde64c
TG		 3518 asection *sec;
3519 bfd_mach_o_section *section;
1e8a024a 3520
47daa70f
TG		 3521 if (bfd_bread (&raw, BFD_MACH_O_SECTION_64_SIZE, abfd)
3522 != BFD_MACH_O_SECTION_64_SIZE)
f1bde64c
TG		 3523 return NULL;
3524
5a5cbf72 3525 sec = bfd_mach_o_make_bfd_section (abfd, raw.segname, raw.sectname);
f1bde64c
TG		 3526 if (sec == NULL)
3527 return NULL;
1e8a024a 3528
f1bde64c
TG		 3529 section = bfd_mach_o_get_mach_o_section (sec);
3530 memcpy (section->segname, raw.segname, sizeof (raw.segname));
3531 section->segname[BFD_MACH_O_SEGNAME_SIZE] = 0;
3532 memcpy (section->sectname, raw.sectname, sizeof (raw.sectname));
69499dca 3533 section->sectname[BFD_MACH_O_SECTNAME_SIZE] = 0;
46d1c23b
TG		 3534 section->addr = bfd_h_get_64 (abfd, raw.addr);
3535 section->size = bfd_h_get_64 (abfd, raw.size);
3536 section->offset = bfd_h_get_32 (abfd, raw.offset);
3537 section->align = bfd_h_get_32 (abfd, raw.align);
c86934ce
NC		 3538 if (section->align > 64)
3539 {
4eca0228 3540 _bfd_error_handler
d42c267e 3541 (_("bfd_mach_o_read_section_64: overlarge alignment value: %#lx, "
4eca0228 3542 "using 32 instead"), section->align);
c86934ce
NC		 3543 section->align = 32;
3544 }
46d1c23b
TG		 3545 section->reloff = bfd_h_get_32 (abfd, raw.reloff);
3546 section->nreloc = bfd_h_get_32 (abfd, raw.nreloc);
3547 section->flags = bfd_h_get_32 (abfd, raw.flags);
3548 section->reserved1 = bfd_h_get_32 (abfd, raw.reserved1);
3549 section->reserved2 = bfd_h_get_32 (abfd, raw.reserved2);
3550 section->reserved3 = bfd_h_get_32 (abfd, raw.reserved3);
3af9a47b 3551
f1bde64c 3552 bfd_mach_o_init_section_from_mach_o (abfd, sec, prot);
3af9a47b 3553
f1bde64c 3554 return sec;
3af9a47b
NC		 3555}
3556
f1bde64c 3557static asection *
47daa70f 3558bfd_mach_o_read_section (bfd *abfd, unsigned long prot, unsigned int wide)
1e8a024a
TG		 3559{
3560 if (wide)
47daa70f 3561 return bfd_mach_o_read_section_64 (abfd, prot);
1e8a024a 3562 else
47daa70f 3563 return bfd_mach_o_read_section_32 (abfd, prot);
1e8a024a
TG		 3564}
3565
afbb9e17 3566static bfd_boolean
ab273af8 3567bfd_mach_o_read_symtab_symbol (bfd *abfd,
07d6d2b8
AM		 3568 bfd_mach_o_symtab_command *sym,
3569 bfd_mach_o_asymbol *s,
3570 unsigned long i)
3af9a47b 3571{
046b007d 3572 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
c2f09c75 3573 unsigned int wide = mach_o_wide_p (&mdata->header);
046b007d
TG		 3574 unsigned int symwidth =
3575 wide ? BFD_MACH_O_NLIST_64_SIZE : BFD_MACH_O_NLIST_SIZE;
92bc0e80 3576 unsigned int symoff = sym->symoff + (i * symwidth);
46d1c23b 3577 struct mach_o_nlist_64_external raw;
3af9a47b
NC		 3578 unsigned char type = -1;
3579 unsigned char section = -1;
3580 short desc = -1;
1e8a024a 3581 symvalue value = -1;
3af9a47b
NC		 3582 unsigned long stroff = -1;
3583 unsigned int symtype = -1;
3584
3585 BFD_ASSERT (sym->strtab != NULL);
3586
c2f09c75 3587 if (bfd_seek (abfd, symoff, SEEK_SET) != 0
46d1c23b 3588 || bfd_bread (&raw, symwidth, abfd) != symwidth)
3af9a47b 3589 {
4eca0228 3590 _bfd_error_handler
695344c0 3591 /* xgettext:c-format */
07d6d2b8
AM		 3592 (_("bfd_mach_o_read_symtab_symbol: unable to read %d bytes at %u"),
3593 symwidth, symoff);
afbb9e17 3594 return FALSE;
3af9a47b
NC		 3595 }
3596
46d1c23b
TG		 3597 stroff = bfd_h_get_32 (abfd, raw.n_strx);
3598 type = bfd_h_get_8 (abfd, raw.n_type);
c2f09c75 3599 symtype = type & BFD_MACH_O_N_TYPE;
46d1c23b
TG		 3600 section = bfd_h_get_8 (abfd, raw.n_sect);
3601 desc = bfd_h_get_16 (abfd, raw.n_desc);
1e8a024a 3602 if (wide)
46d1c23b 3603 value = bfd_h_get_64 (abfd, raw.n_value);
1e8a024a 3604 else
46d1c23b 3605 value = bfd_h_get_32 (abfd, raw.n_value);
3af9a47b
NC		 3606
3607 if (stroff >= sym->strsize)
3608 {
4eca0228 3609 _bfd_error_handler
695344c0 3610 /* xgettext:c-format */
07d6d2b8
AM		 3611 (_("bfd_mach_o_read_symtab_symbol: name out of range (%lu >= %u)"),
3612 stroff,
3613 sym->strsize);
afbb9e17 3614 return FALSE;
3af9a47b
NC		 3615 }
3616
92bc0e80
TG		 3617 s->symbol.the_bfd = abfd;
3618 s->symbol.name = sym->strtab + stroff;
3619 s->symbol.value = value;
3620 s->symbol.flags = 0x0;
b22161d6 3621 s->symbol.udata.i = i;
92bc0e80
TG		 3622 s->n_type = type;
3623 s->n_sect = section;
3624 s->n_desc = desc;
3af9a47b
NC		 3625
3626 if (type & BFD_MACH_O_N_STAB)
3627 {
92bc0e80
TG		 3628 s->symbol.flags |= BSF_DEBUGGING;
3629 s->symbol.section = bfd_und_section_ptr;
15e1c58a
TG		 3630 switch (type)
3631 {
3632 case N_FUN:
3633 case N_STSYM:
3634 case N_LCSYM:
3635 case N_BNSYM:
3636 case N_SLINE:
3637 case N_ENSYM:
3638 case N_ECOMM:
3639 case N_ECOML:
3640 case N_GSYM:
3641 if ((section > 0) && (section <= mdata->nsects))
3642 {
92bc0e80
TG		 3643 s->symbol.section = mdata->sections[section - 1]->bfdsection;
3644 s->symbol.value =
07d6d2b8 3645 s->symbol.value - mdata->sections[section - 1]->addr;
15e1c58a
TG		 3646 }
3647 break;
3648 }
3af9a47b
NC		 3649 }
3650 else
3651 {
b22161d6 3652 if (type & (BFD_MACH_O_N_PEXT | BFD_MACH_O_N_EXT))
92bc0e80 3653 s->symbol.flags |= BSF_GLOBAL;
b22161d6 3654 else
92bc0e80 3655 s->symbol.flags |= BSF_LOCAL;
3af9a47b
NC		 3656
3657 switch (symtype)
3658 {
3659 case BFD_MACH_O_N_UNDF:
07d6d2b8
AM		 3660 if (type == (BFD_MACH_O_N_UNDF | BFD_MACH_O_N_EXT)
3661 && s->symbol.value != 0)
3662 {
3663 /* A common symbol. */
3664 s->symbol.section = bfd_com_section_ptr;
3665 s->symbol.flags = BSF_NO_FLAGS;
3666 }
3667 else
3668 {
3669 s->symbol.section = bfd_und_section_ptr;
3670 if (s->n_desc & BFD_MACH_O_N_WEAK_REF)
3671 s->symbol.flags |= BSF_WEAK;
3672 }
3af9a47b
NC		 3673 break;
3674 case BFD_MACH_O_N_PBUD:
92bc0e80 3675 s->symbol.section = bfd_und_section_ptr;
3af9a47b
NC		 3676 break;
3677 case BFD_MACH_O_N_ABS:
92bc0e80 3678 s->symbol.section = bfd_abs_section_ptr;
3af9a47b
NC		 3679 break;
3680 case BFD_MACH_O_N_SECT:
3681 if ((section > 0) && (section <= mdata->nsects))
3682 {
92bc0e80
TG		 3683 s->symbol.section = mdata->sections[section - 1]->bfdsection;
3684 s->symbol.value =
07d6d2b8 3685 s->symbol.value - mdata->sections[section - 1]->addr;
3af9a47b
NC		 3686 }
3687 else
3688 {
3689 /* Mach-O uses 0 to mean "no section"; not an error. */
3690 if (section != 0)
3691 {
4eca0228 3692 _bfd_error_handler
695344c0 3693 /* xgettext:c-format */
4eca0228
AM		 3694 (_("bfd_mach_o_read_symtab_symbol: "
3695 "symbol \"%s\" specified invalid section %d (max %lu): "
3696 "setting to undefined"),
3697 s->symbol.name, section, mdata->nsects);
3af9a47b 3698 }
92bc0e80 3699 s->symbol.section = bfd_und_section_ptr;
3af9a47b
NC		 3700 }
3701 break;
3702 case BFD_MACH_O_N_INDR:
0596a831
TG		 3703 /* FIXME: we don't follow the BFD convention as this indirect symbol
3704 won't be followed by the referenced one. This looks harmless
3705 unless we start using the linker. */
3706 s->symbol.flags |= BSF_INDIRECT;
3707 s->symbol.section = bfd_ind_section_ptr;
3708 s->symbol.value = 0;
3af9a47b
NC		 3709 break;
3710 default:
4eca0228 3711 _bfd_error_handler
695344c0 3712 /* xgettext:c-format */
4eca0228
AM		 3713 (_("bfd_mach_o_read_symtab_symbol: "
3714 "symbol \"%s\" specified invalid type field 0x%x: "
3715 "setting to undefined"), s->symbol.name, symtype);
92bc0e80 3716 s->symbol.section = bfd_und_section_ptr;
3af9a47b
NC		 3717 break;
3718 }
3719 }
3720
afbb9e17 3721 return TRUE;
3af9a47b
NC		 3722}
3723
c5012cd8 3724bfd_boolean
ab273af8 3725bfd_mach_o_read_symtab_strtab (bfd *abfd)
3af9a47b 3726{
046b007d
TG		 3727 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
3728 bfd_mach_o_symtab_command *sym = mdata->symtab;
3729
3730 /* Fail if there is no symtab. */
3731 if (sym == NULL)
afbb9e17 3732 return FALSE;
046b007d
TG		 3733
3734 /* Success if already loaded. */
3735 if (sym->strtab)
afbb9e17 3736 return TRUE;
3af9a47b
NC		 3737
3738 if (abfd->flags & BFD_IN_MEMORY)
3739 {
3740 struct bfd_in_memory *b;
3741
3742 b = (struct bfd_in_memory *) abfd->iostream;
3743
3744 if ((sym->stroff + sym->strsize) > b->size)
3745 {
3746 bfd_set_error (bfd_error_file_truncated);
afbb9e17 3747 return FALSE;
3af9a47b 3748 }
f075ee0c 3749 sym->strtab = (char *) b->buffer + sym->stroff;
3af9a47b 3750 }
046b007d 3751 else
3af9a47b 3752 {
8bdf0be1
NC		 3753 /* See PR 21840 for a reproducer. */
3754 if ((sym->strsize + 1) == 0)
3755 return FALSE;
e7287c7f 3756 sym->strtab = bfd_alloc (abfd, sym->strsize + 1);
046b007d 3757 if (sym->strtab == NULL)
07d6d2b8 3758 return FALSE;
046b007d
TG		 3759
3760 if (bfd_seek (abfd, sym->stroff, SEEK_SET) != 0
07d6d2b8
AM		 3761 || bfd_bread (sym->strtab, sym->strsize, abfd) != sym->strsize)
3762 {
a1165289
NC		 3763 /* PR 17512: file: 10888-1609-0.004. */
3764 bfd_release (abfd, sym->strtab);
3765 sym->strtab = NULL;
07d6d2b8
AM		 3766 bfd_set_error (bfd_error_file_truncated);
3767 return FALSE;
3768 }
e7287c7f
NC		 3769 /* Zero terminate the string table. */
3770 sym->strtab[sym->strsize] = 0;
3af9a47b
NC		 3771 }
3772
afbb9e17 3773 return TRUE;
3af9a47b
NC		 3774}
3775
c5012cd8 3776bfd_boolean
ab273af8 3777bfd_mach_o_read_symtab_symbols (bfd *abfd)
3af9a47b 3778{
046b007d
TG		 3779 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
3780 bfd_mach_o_symtab_command *sym = mdata->symtab;
3af9a47b 3781 unsigned long i;
3af9a47b 3782
092d27ff 3783 if (sym == NULL || sym->symbols)
0a9d414a
NC		 3784 /* Return now if there are no symbols or if already loaded. */
3785 return TRUE;
046b007d 3786
64d29018 3787 sym->symbols = bfd_alloc2 (abfd, sym->nsyms, sizeof (bfd_mach_o_asymbol));
3af9a47b
NC		 3788 if (sym->symbols == NULL)
3789 {
4eca0228
AM		 3790 _bfd_error_handler (_("bfd_mach_o_read_symtab_symbols: "
3791 "unable to allocate memory for symbols"));
64d29018 3792 sym->nsyms = 0;
afbb9e17 3793 return FALSE;
3af9a47b 3794 }
a95a4550 3795
afbb9e17 3796 if (!bfd_mach_o_read_symtab_strtab (abfd))
64d29018 3797 goto fail;
3af9a47b
NC		 3798
3799 for (i = 0; i < sym->nsyms; i++)
64d29018
NC		 3800 if (!bfd_mach_o_read_symtab_symbol (abfd, sym, &sym->symbols[i], i))
3801 goto fail;
a95a4550 3802
afbb9e17 3803 return TRUE;
64d29018
NC		 3804
3805 fail:
3806 bfd_release (abfd, sym->symbols);
3807 sym->symbols = NULL;
3808 sym->nsyms = 0;
3809 return FALSE;
3af9a47b
NC		 3810}
3811
3812static const char *
116c20d2 3813bfd_mach_o_i386_flavour_string (unsigned int flavour)
3af9a47b
NC		 3814{
3815 switch ((int) flavour)
3816 {
15e1c58a
TG		 3817 case BFD_MACH_O_x86_THREAD_STATE32: return "x86_THREAD_STATE32";
3818 case BFD_MACH_O_x86_FLOAT_STATE32: return "x86_FLOAT_STATE32";
3819 case BFD_MACH_O_x86_EXCEPTION_STATE32: return "x86_EXCEPTION_STATE32";
3820 case BFD_MACH_O_x86_THREAD_STATE64: return "x86_THREAD_STATE64";
3821 case BFD_MACH_O_x86_FLOAT_STATE64: return "x86_FLOAT_STATE64";
3822 case BFD_MACH_O_x86_EXCEPTION_STATE64: return "x86_EXCEPTION_STATE64";
3823 case BFD_MACH_O_x86_THREAD_STATE: return "x86_THREAD_STATE";
3824 case BFD_MACH_O_x86_FLOAT_STATE: return "x86_FLOAT_STATE";
3825 case BFD_MACH_O_x86_EXCEPTION_STATE: return "x86_EXCEPTION_STATE";
3826 case BFD_MACH_O_x86_DEBUG_STATE32: return "x86_DEBUG_STATE32";
3827 case BFD_MACH_O_x86_DEBUG_STATE64: return "x86_DEBUG_STATE64";
3828 case BFD_MACH_O_x86_DEBUG_STATE: return "x86_DEBUG_STATE";
b32e07d7 3829 case BFD_MACH_O_x86_THREAD_STATE_NONE: return "x86_THREAD_STATE_NONE";
3af9a47b
NC		 3830 default: return "UNKNOWN";
3831 }
3832}
3833
3834static const char *
116c20d2 3835bfd_mach_o_ppc_flavour_string (unsigned int flavour)
3af9a47b
NC		 3836{
3837 switch ((int) flavour)
3838 {
b32e07d7
TG		 3839 case BFD_MACH_O_PPC_THREAD_STATE: return "PPC_THREAD_STATE";
3840 case BFD_MACH_O_PPC_FLOAT_STATE: return "PPC_FLOAT_STATE";
3841 case BFD_MACH_O_PPC_EXCEPTION_STATE: return "PPC_EXCEPTION_STATE";
3842 case BFD_MACH_O_PPC_VECTOR_STATE: return "PPC_VECTOR_STATE";
3843 case BFD_MACH_O_PPC_THREAD_STATE64: return "PPC_THREAD_STATE64";
3844 case BFD_MACH_O_PPC_EXCEPTION_STATE64: return "PPC_EXCEPTION_STATE64";
3af9a47b
NC		 3845 default: return "UNKNOWN";
3846 }
3847}
3848
452216ab 3849static bfd_boolean
ab273af8 3850bfd_mach_o_read_dylinker (bfd *abfd, bfd_mach_o_load_command *command)
3af9a47b
NC		 3851{
3852 bfd_mach_o_dylinker_command *cmd = &command->command.dylinker;
46d1c23b 3853 struct mach_o_str_command_external raw;
3af9a47b 3854 unsigned int nameoff;
4525c51a 3855 unsigned int namelen;
3af9a47b 3856
47daa70f 3857 if (bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
452216ab 3858 return FALSE;
3af9a47b 3859
46d1c23b 3860 nameoff = bfd_h_get_32 (abfd, raw.str);
3af9a47b 3861
4525c51a
TG		 3862 cmd->name_offset = nameoff;
3863 namelen = command->len - nameoff;
3864 nameoff += command->offset;
3865 cmd->name_str = bfd_alloc (abfd, namelen);
b32e07d7 3866 if (cmd->name_str == NULL)
452216ab 3867 return FALSE;
4525c51a
TG		 3868 if (bfd_seek (abfd, nameoff, SEEK_SET) != 0
3869 || bfd_bread (cmd->name_str, namelen, abfd) != namelen)
452216ab
TG		 3870 return FALSE;
3871 return TRUE;
3af9a47b
NC		 3872}
3873
452216ab 3874static bfd_boolean
ab273af8 3875bfd_mach_o_read_dylib (bfd *abfd, bfd_mach_o_load_command *command)
3af9a47b 3876{
47daa70f 3877 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
3af9a47b 3878 bfd_mach_o_dylib_command *cmd = &command->command.dylib;
46d1c23b 3879 struct mach_o_dylib_command_external raw;
3af9a47b 3880 unsigned int nameoff;
4525c51a 3881 unsigned int namelen;
3af9a47b 3882
046b007d
TG		 3883 switch (command->type)
3884 {
3885 case BFD_MACH_O_LC_LOAD_DYLIB:
fbe383b9 3886 case BFD_MACH_O_LC_LAZY_LOAD_DYLIB:
046b007d 3887 case BFD_MACH_O_LC_LOAD_WEAK_DYLIB:
046b007d 3888 case BFD_MACH_O_LC_ID_DYLIB:
046b007d 3889 case BFD_MACH_O_LC_REEXPORT_DYLIB:
73017762 3890 case BFD_MACH_O_LC_LOAD_UPWARD_DYLIB:
046b007d
TG		 3891 break;
3892 default:
b32e07d7 3893 BFD_FAIL ();
452216ab 3894 return FALSE;
046b007d 3895 }
3af9a47b 3896
47daa70f 3897 if (bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
452216ab 3898 return FALSE;
3af9a47b 3899
46d1c23b
TG		 3900 nameoff = bfd_h_get_32 (abfd, raw.name);
3901 cmd->timestamp = bfd_h_get_32 (abfd, raw.timestamp);
3902 cmd->current_version = bfd_h_get_32 (abfd, raw.current_version);
3903 cmd->compatibility_version = bfd_h_get_32 (abfd, raw.compatibility_version);
3af9a47b
NC		 3904
3905 cmd->name_offset = command->offset + nameoff;
4525c51a
TG		 3906 namelen = command->len - nameoff;
3907 cmd->name_str = bfd_alloc (abfd, namelen);
b32e07d7 3908 if (cmd->name_str == NULL)
452216ab 3909 return FALSE;
47daa70f 3910 if (bfd_seek (abfd, mdata->hdr_offset + cmd->name_offset, SEEK_SET) != 0
4525c51a 3911 || bfd_bread (cmd->name_str, namelen, abfd) != namelen)
452216ab
TG		 3912 return FALSE;
3913 return TRUE;
3af9a47b
NC		 3914}
3915
452216ab 3916static bfd_boolean
7a79c514 3917bfd_mach_o_read_prebound_dylib (bfd *abfd,
07d6d2b8 3918 bfd_mach_o_load_command *command)
3af9a47b 3919{
7a79c514
TG		 3920 bfd_mach_o_prebound_dylib_command *cmd = &command->command.prebound_dylib;
3921 struct mach_o_prebound_dylib_command_external raw;
3922 unsigned int nameoff;
3923 unsigned int modoff;
3924 unsigned int str_len;
3925 unsigned char *str;
3926
47daa70f 3927 if (bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
452216ab 3928 return FALSE;
7a79c514
TG		 3929
3930 nameoff = bfd_h_get_32 (abfd, raw.name);
3931 modoff = bfd_h_get_32 (abfd, raw.linked_modules);
3932 if (nameoff > command->len || modoff > command->len)
452216ab 3933 return FALSE;
7a79c514
TG		 3934
3935 str_len = command->len - sizeof (raw);
3936 str = bfd_alloc (abfd, str_len);
3937 if (str == NULL)
452216ab 3938 return FALSE;
7a79c514 3939 if (bfd_bread (str, str_len, abfd) != str_len)
452216ab 3940 return FALSE;
7a79c514
TG		 3941
3942 cmd->name_offset = command->offset + nameoff;
3943 cmd->nmodules = bfd_h_get_32 (abfd, raw.nmodules);
3944 cmd->linked_modules_offset = command->offset + modoff;
3945
3946 cmd->name_str = (char *)str + nameoff - (sizeof (raw) + BFD_MACH_O_LC_SIZE);
3947 cmd->linked_modules = str + modoff - (sizeof (raw) + BFD_MACH_O_LC_SIZE);
452216ab 3948 return TRUE;
7a79c514
TG		 3949}
3950
452216ab 3951static bfd_boolean
7a79c514
TG		 3952bfd_mach_o_read_prebind_cksum (bfd *abfd,
3953 bfd_mach_o_load_command *command)
3954{
3955 bfd_mach_o_prebind_cksum_command *cmd = &command->command.prebind_cksum;
3956 struct mach_o_prebind_cksum_command_external raw;
3af9a47b 3957
47daa70f 3958 if (bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
452216ab 3959 return FALSE;
7a79c514
TG		 3960
3961 cmd->cksum = bfd_get_32 (abfd, raw.cksum);
452216ab 3962 return TRUE;
7a79c514
TG		 3963}
3964
452216ab 3965static bfd_boolean
7a79c514
TG		 3966bfd_mach_o_read_twolevel_hints (bfd *abfd,
3967 bfd_mach_o_load_command *command)
3968{
3969 bfd_mach_o_twolevel_hints_command *cmd = &command->command.twolevel_hints;
3970 struct mach_o_twolevel_hints_command_external raw;
3971
47daa70f 3972 if (bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
452216ab 3973 return FALSE;
7a79c514
TG		 3974
3975 cmd->offset = bfd_get_32 (abfd, raw.offset);
3976 cmd->nhints = bfd_get_32 (abfd, raw.nhints);
452216ab 3977 return TRUE;
3af9a47b
NC		 3978}
3979
452216ab 3980static bfd_boolean
9f4a5bd1
TG		 3981bfd_mach_o_read_fvmlib (bfd *abfd, bfd_mach_o_load_command *command)
3982{
3983 bfd_mach_o_fvmlib_command *fvm = &command->command.fvmlib;
3984 struct mach_o_fvmlib_command_external raw;
3985 unsigned int nameoff;
4525c51a 3986 unsigned int namelen;
9f4a5bd1 3987
47daa70f 3988 if (bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
452216ab 3989 return FALSE;
9f4a5bd1
TG		 3990
3991 nameoff = bfd_h_get_32 (abfd, raw.name);
3992 fvm->minor_version = bfd_h_get_32 (abfd, raw.minor_version);
3993 fvm->header_addr = bfd_h_get_32 (abfd, raw.header_addr);
3994
3995 fvm->name_offset = command->offset + nameoff;
4525c51a
TG		 3996 namelen = command->len - nameoff;
3997 fvm->name_str = bfd_alloc (abfd, namelen);
9f4a5bd1 3998 if (fvm->name_str == NULL)
452216ab 3999 return FALSE;
9f4a5bd1 4000 if (bfd_seek (abfd, fvm->name_offset, SEEK_SET) != 0
4525c51a 4001 || bfd_bread (fvm->name_str, namelen, abfd) != namelen)
452216ab
TG		 4002 return FALSE;
4003 return TRUE;
9f4a5bd1
TG		 4004}
4005
452216ab 4006static bfd_boolean
ab273af8 4007bfd_mach_o_read_thread (bfd *abfd, bfd_mach_o_load_command *command)
3af9a47b 4008{
b32e07d7 4009 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
3af9a47b 4010 bfd_mach_o_thread_command *cmd = &command->command.thread;
92bc0e80 4011 unsigned int offset;
3af9a47b
NC		 4012 unsigned int nflavours;
4013 unsigned int i;
4014
4015 BFD_ASSERT ((command->type == BFD_MACH_O_LC_THREAD)
4016 || (command->type == BFD_MACH_O_LC_UNIXTHREAD));
4017
b32e07d7 4018 /* Count the number of threads. */
3af9a47b
NC		 4019 offset = 8;
4020 nflavours = 0;
4021 while (offset != command->len)
4022 {
46d1c23b
TG		 4023 struct mach_o_thread_command_external raw;
4024
3af9a47b 4025 if (offset >= command->len)
452216ab 4026 return FALSE;
3af9a47b 4027
c2f09c75 4028 if (bfd_seek (abfd, command->offset + offset, SEEK_SET) != 0
07d6d2b8 4029 || bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
452216ab 4030 return FALSE;
3af9a47b 4031
46d1c23b 4032 offset += sizeof (raw) + bfd_h_get_32 (abfd, raw.count) * 4;
3af9a47b
NC		 4033 nflavours++;
4034 }
4035
b32e07d7 4036 /* Allocate threads. */
64d29018
NC		 4037 cmd->flavours = bfd_alloc2
4038 (abfd, nflavours, sizeof (bfd_mach_o_thread_flavour));
3af9a47b 4039 if (cmd->flavours == NULL)
452216ab 4040 return FALSE;
3af9a47b
NC		 4041 cmd->nflavours = nflavours;
4042
4043 offset = 8;
4044 nflavours = 0;
4045 while (offset != command->len)
4046 {
46d1c23b
TG		 4047 struct mach_o_thread_command_external raw;
4048
3af9a47b 4049 if (offset >= command->len)
452216ab 4050 return FALSE;
3af9a47b
NC		 4051
4052 if (nflavours >= cmd->nflavours)
452216ab 4053 return FALSE;
3af9a47b 4054
c2f09c75 4055 if (bfd_seek (abfd, command->offset + offset, SEEK_SET) != 0
07d6d2b8 4056 || bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
452216ab 4057 return FALSE;
3af9a47b 4058
46d1c23b
TG		 4059 cmd->flavours[nflavours].flavour = bfd_h_get_32 (abfd, raw.flavour);
4060 cmd->flavours[nflavours].offset = command->offset + offset + sizeof (raw);
4061 cmd->flavours[nflavours].size = bfd_h_get_32 (abfd, raw.count) * 4;
4062 offset += cmd->flavours[nflavours].size + sizeof (raw);
3af9a47b
NC		 4063 nflavours++;
4064 }
4065
4066 for (i = 0; i < nflavours; i++)
4067 {
4068 asection *bfdsec;
4069 unsigned int snamelen;
4070 char *sname;
4071 const char *flavourstr;
4072 const char *prefix = "LC_THREAD";
a95a4550
AM		 4073 unsigned int j = 0;
4074
3af9a47b
NC		 4075 switch (mdata->header.cputype)
4076 {
4077 case BFD_MACH_O_CPU_TYPE_POWERPC:
1e8a024a 4078 case BFD_MACH_O_CPU_TYPE_POWERPC_64:
707e555b
TG		 4079 flavourstr =
4080 bfd_mach_o_ppc_flavour_string (cmd->flavours[i].flavour);
3af9a47b
NC		 4081 break;
4082 case BFD_MACH_O_CPU_TYPE_I386:
1e8a024a 4083 case BFD_MACH_O_CPU_TYPE_X86_64:
707e555b
TG		 4084 flavourstr =
4085 bfd_mach_o_i386_flavour_string (cmd->flavours[i].flavour);
3af9a47b
NC		 4086 break;
4087 default:
4088 flavourstr = "UNKNOWN_ARCHITECTURE";
4089 break;
4090 }
a95a4550 4091
3af9a47b 4092 snamelen = strlen (prefix) + 1 + 20 + 1 + strlen (flavourstr) + 1;
116c20d2 4093 sname = bfd_alloc (abfd, snamelen);
3af9a47b 4094 if (sname == NULL)
452216ab 4095 return FALSE;
3af9a47b
NC		 4096
4097 for (;;)
4098 {
a95a4550
AM		 4099 sprintf (sname, "%s.%s.%u", prefix, flavourstr, j);
4100 if (bfd_get_section_by_name (abfd, sname) == NULL)
3af9a47b 4101 break;
a95a4550 4102 j++;
3af9a47b
NC		 4103 }
4104
117ed4f8 4105 bfdsec = bfd_make_section_with_flags (abfd, sname, SEC_HAS_CONTENTS);
a95a4550 4106
3af9a47b
NC		 4107 bfdsec->vma = 0;
4108 bfdsec->lma = 0;
eea6121a 4109 bfdsec->size = cmd->flavours[i].size;
3af9a47b
NC		 4110 bfdsec->filepos = cmd->flavours[i].offset;
4111 bfdsec->alignment_power = 0x0;
3af9a47b
NC		 4112
4113 cmd->section = bfdsec;
4114 }
4115
452216ab 4116 return TRUE;
3af9a47b
NC		 4117}
4118
452216ab 4119static bfd_boolean
ab273af8 4120bfd_mach_o_read_dysymtab (bfd *abfd, bfd_mach_o_load_command *command)
3af9a47b 4121{
046b007d 4122 bfd_mach_o_dysymtab_command *cmd = &command->command.dysymtab;
b32e07d7 4123 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
3af9a47b
NC		 4124
4125 BFD_ASSERT (command->type == BFD_MACH_O_LC_DYSYMTAB);
4126
46d1c23b
TG		 4127 {
4128 struct mach_o_dysymtab_command_external raw;
4129
47daa70f 4130 if (bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
452216ab 4131 return FALSE;
3af9a47b 4132
46d1c23b
TG		 4133 cmd->ilocalsym = bfd_h_get_32 (abfd, raw.ilocalsym);
4134 cmd->nlocalsym = bfd_h_get_32 (abfd, raw.nlocalsym);
4135 cmd->iextdefsym = bfd_h_get_32 (abfd, raw.iextdefsym);
4136 cmd->nextdefsym = bfd_h_get_32 (abfd, raw.nextdefsym);
4137 cmd->iundefsym = bfd_h_get_32 (abfd, raw.iundefsym);
4138 cmd->nundefsym = bfd_h_get_32 (abfd, raw.nundefsym);
4139 cmd->tocoff = bfd_h_get_32 (abfd, raw.tocoff);
4140 cmd->ntoc = bfd_h_get_32 (abfd, raw.ntoc);
4141 cmd->modtaboff = bfd_h_get_32 (abfd, raw.modtaboff);
4142 cmd->nmodtab = bfd_h_get_32 (abfd, raw.nmodtab);
4143 cmd->extrefsymoff = bfd_h_get_32 (abfd, raw.extrefsymoff);
4144 cmd->nextrefsyms = bfd_h_get_32 (abfd, raw.nextrefsyms);
4145 cmd->indirectsymoff = bfd_h_get_32 (abfd, raw.indirectsymoff);
4146 cmd->nindirectsyms = bfd_h_get_32 (abfd, raw.nindirectsyms);
4147 cmd->extreloff = bfd_h_get_32 (abfd, raw.extreloff);
4148 cmd->nextrel = bfd_h_get_32 (abfd, raw.nextrel);
4149 cmd->locreloff = bfd_h_get_32 (abfd, raw.locreloff);
4150 cmd->nlocrel = bfd_h_get_32 (abfd, raw.nlocrel);
4151 }
046b007d
TG		 4152
4153 if (cmd->nmodtab != 0)
4154 {
046b007d
TG		 4155 unsigned int i;
4156 int wide = bfd_mach_o_wide_p (abfd);
4157 unsigned int module_len = wide ? 56 : 52;
4158
4159 cmd->dylib_module =
07d6d2b8 4160 bfd_alloc2 (abfd, cmd->nmodtab, sizeof (bfd_mach_o_dylib_module));
046b007d 4161 if (cmd->dylib_module == NULL)
07d6d2b8 4162 return FALSE;
046b007d
TG		 4163
4164 if (bfd_seek (abfd, cmd->modtaboff, SEEK_SET) != 0)
07d6d2b8 4165 return FALSE;
046b007d
TG		 4166
4167 for (i = 0; i < cmd->nmodtab; i++)
07d6d2b8
AM		 4168 {
4169 bfd_mach_o_dylib_module *module = &cmd->dylib_module[i];
4170 unsigned long v;
4171 unsigned char buf[56];
4172
4173 if (bfd_bread ((void *) buf, module_len, abfd) != module_len)
4174 return FALSE;
4175
4176 module->module_name_idx = bfd_h_get_32 (abfd, buf + 0);
4177 module->iextdefsym = bfd_h_get_32 (abfd, buf + 4);
4178 module->nextdefsym = bfd_h_get_32 (abfd, buf + 8);
4179 module->irefsym = bfd_h_get_32 (abfd, buf + 12);
4180 module->nrefsym = bfd_h_get_32 (abfd, buf + 16);
4181 module->ilocalsym = bfd_h_get_32 (abfd, buf + 20);
4182 module->nlocalsym = bfd_h_get_32 (abfd, buf + 24);
4183 module->iextrel = bfd_h_get_32 (abfd, buf + 28);
4184 module->nextrel = bfd_h_get_32 (abfd, buf + 32);
4185 v = bfd_h_get_32 (abfd, buf +36);
4186 module->iinit = v & 0xffff;
4187 module->iterm = (v >> 16) & 0xffff;
4188 v = bfd_h_get_32 (abfd, buf + 40);
4189 module->ninit = v & 0xffff;
4190 module->nterm = (v >> 16) & 0xffff;
4191 if (wide)
4192 {
4193 module->objc_module_info_size = bfd_h_get_32 (abfd, buf + 44);
4194 module->objc_module_info_addr = bfd_h_get_64 (abfd, buf + 48);
4195 }
4196 else
4197 {
4198 module->objc_module_info_addr = bfd_h_get_32 (abfd, buf + 44);
4199 module->objc_module_info_size = bfd_h_get_32 (abfd, buf + 48);
4200 }
4201 }
046b007d 4202 }
afbb9e17 4203
046b007d
TG		 4204 if (cmd->ntoc != 0)
4205 {
64d29018 4206 unsigned long i;
046b007d 4207
64d29018 4208 cmd->dylib_toc = bfd_alloc2
07d6d2b8 4209 (abfd, cmd->ntoc, sizeof (bfd_mach_o_dylib_table_of_content));
046b007d 4210 if (cmd->dylib_toc == NULL)
07d6d2b8 4211 return FALSE;
046b007d
TG		 4212
4213 if (bfd_seek (abfd, cmd->tocoff, SEEK_SET) != 0)
07d6d2b8 4214 return FALSE;
046b007d
TG		 4215
4216 for (i = 0; i < cmd->ntoc; i++)
07d6d2b8
AM		 4217 {
4218 struct mach_o_dylib_table_of_contents_external raw;
4219 bfd_mach_o_dylib_table_of_content *toc = &cmd->dylib_toc[i];
046b007d 4220
07d6d2b8
AM		 4221 if (bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
4222 return FALSE;
046b007d 4223
07d6d2b8
AM		 4224 toc->symbol_index = bfd_h_get_32 (abfd, raw.symbol_index);
4225 toc->module_index = bfd_h_get_32 (abfd, raw.module_index);
4226 }
046b007d
TG		 4227 }
4228
4229 if (cmd->nindirectsyms != 0)
4230 {
046b007d
TG		 4231 unsigned int i;
4232
64d29018 4233 cmd->indirect_syms = bfd_alloc2
07d6d2b8 4234 (abfd, cmd->nindirectsyms, sizeof (unsigned int));
046b007d 4235 if (cmd->indirect_syms == NULL)
07d6d2b8 4236 return FALSE;
046b007d
TG		 4237
4238 if (bfd_seek (abfd, cmd->indirectsymoff, SEEK_SET) != 0)
07d6d2b8 4239 return FALSE;
046b007d
TG		 4240
4241 for (i = 0; i < cmd->nindirectsyms; i++)
07d6d2b8
AM		 4242 {
4243 unsigned char raw[4];
4244 unsigned int *is = &cmd->indirect_syms[i];
046b007d 4245
07d6d2b8
AM		 4246 if (bfd_bread (raw, sizeof (raw), abfd) != sizeof (raw))
4247 return FALSE;
046b007d 4248
07d6d2b8
AM		 4249 *is = bfd_h_get_32 (abfd, raw);
4250 }
046b007d
TG		 4251 }
4252
4253 if (cmd->nextrefsyms != 0)
4254 {
046b007d
TG		 4255 unsigned long v;
4256 unsigned int i;
4257
64d29018 4258 cmd->ext_refs = bfd_alloc2
07d6d2b8 4259 (abfd, cmd->nextrefsyms, sizeof (bfd_mach_o_dylib_reference));
046b007d 4260 if (cmd->ext_refs == NULL)
07d6d2b8 4261 return FALSE;
046b007d
TG		 4262
4263 if (bfd_seek (abfd, cmd->extrefsymoff, SEEK_SET) != 0)
07d6d2b8 4264 return FALSE;
046b007d
TG		 4265
4266 for (i = 0; i < cmd->nextrefsyms; i++)
07d6d2b8
AM		 4267 {
4268 unsigned char raw[4];
4269 bfd_mach_o_dylib_reference *ref = &cmd->ext_refs[i];
4270
4271 if (bfd_bread (raw, sizeof (raw), abfd) != sizeof (raw))
4272 return FALSE;
4273
4274 /* Fields isym and flags are written as bit-fields, thus we need
4275 a specific processing for endianness. */
4276 v = bfd_h_get_32 (abfd, raw);
4277 if (bfd_big_endian (abfd))
4278 {
4279 ref->isym = (v >> 8) & 0xffffff;
4280 ref->flags = v & 0xff;
4281 }
4282 else
4283 {
4284 ref->isym = v & 0xffffff;
4285 ref->flags = (v >> 24) & 0xff;
4286 }
4287 }
046b007d 4288 }
3af9a47b 4289
b32e07d7 4290 if (mdata->dysymtab)
452216ab 4291 return FALSE;
b32e07d7
TG		 4292 mdata->dysymtab = cmd;
4293
452216ab 4294 return TRUE;
3af9a47b
NC		 4295}
4296
452216ab 4297static bfd_boolean
ab273af8 4298bfd_mach_o_read_symtab (bfd *abfd, bfd_mach_o_load_command *command)
3af9a47b 4299{
046b007d
TG		 4300 bfd_mach_o_symtab_command *symtab = &command->command.symtab;
4301 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
46d1c23b 4302 struct mach_o_symtab_command_external raw;
3af9a47b
NC		 4303
4304 BFD_ASSERT (command->type == BFD_MACH_O_LC_SYMTAB);
4305
47daa70f 4306 if (bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
452216ab 4307 return FALSE;
a95a4550 4308
46d1c23b
TG		 4309 symtab->symoff = bfd_h_get_32 (abfd, raw.symoff);
4310 symtab->nsyms = bfd_h_get_32 (abfd, raw.nsyms);
4311 symtab->stroff = bfd_h_get_32 (abfd, raw.stroff);
4312 symtab->strsize = bfd_h_get_32 (abfd, raw.strsize);
046b007d
TG		 4313 symtab->symbols = NULL;
4314 symtab->strtab = NULL;
3af9a47b 4315
046b007d 4316 if (symtab->nsyms != 0)
15e1c58a
TG		 4317 abfd->flags |= HAS_SYMS;
4318
046b007d 4319 if (mdata->symtab)
452216ab 4320 return FALSE;
046b007d 4321 mdata->symtab = symtab;
452216ab 4322 return TRUE;
3af9a47b
NC		 4323}
4324
452216ab 4325static bfd_boolean
ab273af8 4326bfd_mach_o_read_uuid (bfd *abfd, bfd_mach_o_load_command *command)
15e1c58a
TG		 4327{
4328 bfd_mach_o_uuid_command *cmd = &command->command.uuid;
15e1c58a
TG		 4329
4330 BFD_ASSERT (command->type == BFD_MACH_O_LC_UUID);
4331
47daa70f 4332 if (bfd_bread (cmd->uuid, 16, abfd) != 16)
452216ab 4333 return FALSE;
15e1c58a 4334
452216ab 4335 return TRUE;
15e1c58a
TG		 4336}
4337
452216ab 4338static bfd_boolean
ab273af8 4339bfd_mach_o_read_linkedit (bfd *abfd, bfd_mach_o_load_command *command)
046b007d
TG		 4340{
4341 bfd_mach_o_linkedit_command *cmd = &command->command.linkedit;
46d1c23b 4342 struct mach_o_linkedit_data_command_external raw;
046b007d 4343
47daa70f 4344 if (bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
452216ab 4345 return FALSE;
046b007d 4346
46d1c23b
TG		 4347 cmd->dataoff = bfd_get_32 (abfd, raw.dataoff);
4348 cmd->datasize = bfd_get_32 (abfd, raw.datasize);
452216ab 4349 return TRUE;
046b007d
TG		 4350}
4351
452216ab 4352static bfd_boolean
ab273af8 4353bfd_mach_o_read_str (bfd *abfd, bfd_mach_o_load_command *command)
046b007d
TG		 4354{
4355 bfd_mach_o_str_command *cmd = &command->command.str;
46d1c23b 4356 struct mach_o_str_command_external raw;
046b007d
TG		 4357 unsigned long off;
4358
47daa70f 4359 if (bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
452216ab 4360 return FALSE;
046b007d 4361
46d1c23b 4362 off = bfd_get_32 (abfd, raw.str);
046b007d
TG		 4363 cmd->stroff = command->offset + off;
4364 cmd->str_len = command->len - off;
4365 cmd->str = bfd_alloc (abfd, cmd->str_len);
4366 if (cmd->str == NULL)
452216ab 4367 return FALSE;
046b007d 4368 if (bfd_seek (abfd, cmd->stroff, SEEK_SET) != 0
91d6fa6a 4369 || bfd_bread ((void *) cmd->str, cmd->str_len, abfd) != cmd->str_len)
452216ab
TG		 4370 return FALSE;
4371 return TRUE;
046b007d
TG		 4372}
4373
c9ffd2ea
TG		 4374static unsigned char *
4375bfd_mach_o_alloc_and_read (bfd *abfd, unsigned int off, unsigned int size)
4376{
4377 unsigned char *buf;
4378
4379 buf = bfd_alloc (abfd, size);
4380 if (buf == NULL)
4381 return NULL;
4382 if (bfd_seek (abfd, off, SEEK_SET) != 0
4383 || bfd_bread (buf, size, abfd) != size)
4384 return NULL;
4385 return buf;
4386}
4387
4388static bfd_boolean
4389bfd_mach_o_read_dyld_content (bfd *abfd, bfd_mach_o_dyld_info_command *cmd)
4390{
4391 /* Read rebase content. */
4392 if (cmd->rebase_content == NULL && cmd->rebase_size != 0)
4393 {
4394 cmd->rebase_content =
4395 bfd_mach_o_alloc_and_read (abfd, cmd->rebase_off, cmd->rebase_size);
4396 if (cmd->rebase_content == NULL)
4397 return FALSE;
4398 }
4399
4400 /* Read bind content. */
4401 if (cmd->bind_content == NULL && cmd->bind_size != 0)
4402 {
4403 cmd->bind_content =
4404 bfd_mach_o_alloc_and_read (abfd, cmd->bind_off, cmd->bind_size);
4405 if (cmd->bind_content == NULL)
4406 return FALSE;
4407 }
4408
4409 /* Read weak bind content. */
4410 if (cmd->weak_bind_content == NULL && cmd->weak_bind_size != 0)
4411 {
4412 cmd->weak_bind_content = bfd_mach_o_alloc_and_read
4413 (abfd, cmd->weak_bind_off, cmd->weak_bind_size);
4414 if (cmd->weak_bind_content == NULL)
4415 return FALSE;
4416 }
4417
4418 /* Read lazy bind content. */
4419 if (cmd->lazy_bind_content == NULL && cmd->lazy_bind_size != 0)
4420 {
4421 cmd->lazy_bind_content = bfd_mach_o_alloc_and_read
4422 (abfd, cmd->lazy_bind_off, cmd->lazy_bind_size);
4423 if (cmd->lazy_bind_content == NULL)
4424 return FALSE;
4425 }
4426
4427 /* Read export content. */
4428 if (cmd->export_content == NULL && cmd->export_size != 0)
4429 {
4430 cmd->export_content = bfd_mach_o_alloc_and_read
4431 (abfd, cmd->export_off, cmd->export_size);
4432 if (cmd->export_content == NULL)
4433 return FALSE;
4434 }
4435
4436 return TRUE;
4437}
4438
452216ab 4439static bfd_boolean
ab273af8 4440bfd_mach_o_read_dyld_info (bfd *abfd, bfd_mach_o_load_command *command)
ad86f1fb
TG		 4441{
4442 bfd_mach_o_dyld_info_command *cmd = &command->command.dyld_info;
46d1c23b 4443 struct mach_o_dyld_info_command_external raw;
ad86f1fb 4444
47daa70f 4445 if (bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
452216ab 4446 return FALSE;
ad86f1fb 4447
46d1c23b
TG		 4448 cmd->rebase_off = bfd_get_32 (abfd, raw.rebase_off);
4449 cmd->rebase_size = bfd_get_32 (abfd, raw.rebase_size);
c9ffd2ea 4450 cmd->rebase_content = NULL;
46d1c23b
TG		 4451 cmd->bind_off = bfd_get_32 (abfd, raw.bind_off);
4452 cmd->bind_size = bfd_get_32 (abfd, raw.bind_size);
c9ffd2ea 4453 cmd->bind_content = NULL;
46d1c23b
TG		 4454 cmd->weak_bind_off = bfd_get_32 (abfd, raw.weak_bind_off);
4455 cmd->weak_bind_size = bfd_get_32 (abfd, raw.weak_bind_size);
c9ffd2ea 4456 cmd->weak_bind_content = NULL;
46d1c23b
TG		 4457 cmd->lazy_bind_off = bfd_get_32 (abfd, raw.lazy_bind_off);
4458 cmd->lazy_bind_size = bfd_get_32 (abfd, raw.lazy_bind_size);
c9ffd2ea 4459 cmd->lazy_bind_content = NULL;
46d1c23b
TG		 4460 cmd->export_off = bfd_get_32 (abfd, raw.export_off);
4461 cmd->export_size = bfd_get_32 (abfd, raw.export_size);
c9ffd2ea 4462 cmd->export_content = NULL;
452216ab 4463 return TRUE;
ad86f1fb
TG		 4464}
4465
edbdea0e
TG		 4466static bfd_boolean
4467bfd_mach_o_read_version_min (bfd *abfd, bfd_mach_o_load_command *command)
4468{
4469 bfd_mach_o_version_min_command *cmd = &command->command.version_min;
4470 struct mach_o_version_min_command_external raw;
4471 unsigned int ver;
4472
47daa70f 4473 if (bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
edbdea0e
TG		 4474 return FALSE;
4475
4476 ver = bfd_get_32 (abfd, raw.version);
4477 cmd->rel = ver >> 16;
4478 cmd->maj = ver >> 8;
4479 cmd->min = ver;
4480 cmd->reserved = bfd_get_32 (abfd, raw.reserved);
4481 return TRUE;
4482}
4483
fc55a902
TG		 4484static bfd_boolean
4485bfd_mach_o_read_encryption_info (bfd *abfd, bfd_mach_o_load_command *command)
4486{
4487 bfd_mach_o_encryption_info_command *cmd = &command->command.encryption_info;
4488 struct mach_o_encryption_info_command_external raw;
4489
47daa70f
TG		 4490 if (bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
4491 return FALSE;
4492
4493 cmd->cryptoff = bfd_get_32 (abfd, raw.cryptoff);
4494 cmd->cryptsize = bfd_get_32 (abfd, raw.cryptsize);
4495 cmd->cryptid = bfd_get_32 (abfd, raw.cryptid);
4496 return TRUE;
4497}
4498
4499static bfd_boolean
4500bfd_mach_o_read_encryption_info_64 (bfd *abfd, bfd_mach_o_load_command *command)
4501{
4502 bfd_mach_o_encryption_info_command *cmd = &command->command.encryption_info;
4503 struct mach_o_encryption_info_64_command_external raw;
4504
4505 if (bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
fc55a902
TG		 4506 return FALSE;
4507
4508 cmd->cryptoff = bfd_get_32 (abfd, raw.cryptoff);
4509 cmd->cryptsize = bfd_get_32 (abfd, raw.cryptsize);
4510 cmd->cryptid = bfd_get_32 (abfd, raw.cryptid);
4511 return TRUE;
4512}
4513
1778ad74
TG		 4514static bfd_boolean
4515bfd_mach_o_read_main (bfd *abfd, bfd_mach_o_load_command *command)
4516{
4517 bfd_mach_o_main_command *cmd = &command->command.main;
4518 struct mach_o_entry_point_command_external raw;
4519
47daa70f 4520 if (bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
1778ad74
TG		 4521 return FALSE;
4522
4523 cmd->entryoff = bfd_get_64 (abfd, raw.entryoff);
4524 cmd->stacksize = bfd_get_64 (abfd, raw.stacksize);
4525 return TRUE;
4526}
4527
4528static bfd_boolean
4529bfd_mach_o_read_source_version (bfd *abfd, bfd_mach_o_load_command *command)
4530{
4531 bfd_mach_o_source_version_command *cmd = &command->command.source_version;
4532 struct mach_o_source_version_command_external raw;
4533 bfd_uint64_t ver;
4534
47daa70f 4535 if (bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
1778ad74
TG		 4536 return FALSE;
4537
4538 ver = bfd_get_64 (abfd, raw.version);
4539 /* Note: we use a serie of shift to avoid shift > 32 (for which gcc
4540 generates warnings) in case of the host doesn't support 64 bit
4541 integers. */
4542 cmd->e = ver & 0x3ff;
4543 ver >>= 10;
4544 cmd->d = ver & 0x3ff;
4545 ver >>= 10;
4546 cmd->c = ver & 0x3ff;
4547 ver >>= 10;
4548 cmd->b = ver & 0x3ff;
4549 ver >>= 10;
4550 cmd->a = ver & 0xffffff;
4551 return TRUE;
4552}
4553
452216ab 4554static bfd_boolean
ab273af8 4555bfd_mach_o_read_segment (bfd *abfd,
07d6d2b8
AM		 4556 bfd_mach_o_load_command *command,
4557 unsigned int wide)
3af9a47b 4558{
3af9a47b
NC		 4559 bfd_mach_o_segment_command *seg = &command->command.segment;
4560 unsigned long i;
a95a4550 4561
1e8a024a
TG		 4562 if (wide)
4563 {
46d1c23b
TG		 4564 struct mach_o_segment_command_64_external raw;
4565
1e8a024a 4566 BFD_ASSERT (command->type == BFD_MACH_O_LC_SEGMENT_64);
3af9a47b 4567
47daa70f 4568 if (bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
07d6d2b8 4569 return FALSE;
3af9a47b 4570
46d1c23b 4571 memcpy (seg->segname, raw.segname, 16);
15e1c58a 4572 seg->segname[16] = '\0';
1e8a024a 4573
46d1c23b
TG		 4574 seg->vmaddr = bfd_h_get_64 (abfd, raw.vmaddr);
4575 seg->vmsize = bfd_h_get_64 (abfd, raw.vmsize);
4576 seg->fileoff = bfd_h_get_64 (abfd, raw.fileoff);
4577 seg->filesize = bfd_h_get_64 (abfd, raw.filesize);
4578 seg->maxprot = bfd_h_get_32 (abfd, raw.maxprot);
4579 seg->initprot = bfd_h_get_32 (abfd, raw.initprot);
4580 seg->nsects = bfd_h_get_32 (abfd, raw.nsects);
4581 seg->flags = bfd_h_get_32 (abfd, raw.flags);
1e8a024a
TG		 4582 }
4583 else
4584 {
46d1c23b
TG		 4585 struct mach_o_segment_command_32_external raw;
4586
1e8a024a
TG		 4587 BFD_ASSERT (command->type == BFD_MACH_O_LC_SEGMENT);
4588
47daa70f 4589 if (bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
07d6d2b8 4590 return FALSE;
1e8a024a 4591
46d1c23b 4592 memcpy (seg->segname, raw.segname, 16);
15e1c58a 4593 seg->segname[16] = '\0';
1e8a024a 4594
46d1c23b
TG		 4595 seg->vmaddr = bfd_h_get_32 (abfd, raw.vmaddr);
4596 seg->vmsize = bfd_h_get_32 (abfd, raw.vmsize);
4597 seg->fileoff = bfd_h_get_32 (abfd, raw.fileoff);
4598 seg->filesize = bfd_h_get_32 (abfd, raw.filesize);
4599 seg->maxprot = bfd_h_get_32 (abfd, raw.maxprot);
4600 seg->initprot = bfd_h_get_32 (abfd, raw.initprot);
4601 seg->nsects = bfd_h_get_32 (abfd, raw.nsects);
4602 seg->flags = bfd_h_get_32 (abfd, raw.flags);
1e8a024a 4603 }
9d4b6009
TG		 4604 seg->sect_head = NULL;
4605 seg->sect_tail = NULL;
3af9a47b 4606
f1bde64c 4607 for (i = 0; i < seg->nsects; i++)
3af9a47b 4608 {
f1bde64c 4609 asection *sec;
a95a4550 4610
47daa70f 4611 sec = bfd_mach_o_read_section (abfd, seg->initprot, wide);
f1bde64c 4612 if (sec == NULL)
07d6d2b8 4613 return FALSE;
f1bde64c 4614
c9ffd2ea
TG		 4615 bfd_mach_o_append_section_to_segment
4616 (seg, bfd_mach_o_get_mach_o_section (sec));
3af9a47b
NC		 4617 }
4618
452216ab 4619 return TRUE;
3af9a47b
NC		 4620}
4621
452216ab 4622static bfd_boolean
ab273af8 4623bfd_mach_o_read_segment_32 (bfd *abfd, bfd_mach_o_load_command *command)
1e8a024a 4624{
ab273af8 4625 return bfd_mach_o_read_segment (abfd, command, 0);
1e8a024a
TG		 4626}
4627
452216ab 4628static bfd_boolean
ab273af8 4629bfd_mach_o_read_segment_64 (bfd *abfd, bfd_mach_o_load_command *command)
1e8a024a 4630{
ab273af8 4631 return bfd_mach_o_read_segment (abfd, command, 1);
1e8a024a
TG		 4632}
4633
452216ab 4634static bfd_boolean
ab273af8 4635bfd_mach_o_read_command (bfd *abfd, bfd_mach_o_load_command *command)
3af9a47b 4636{
47daa70f 4637 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
46d1c23b
TG		 4638 struct mach_o_load_command_external raw;
4639 unsigned int cmd;
3af9a47b 4640
046b007d 4641 /* Read command type and length. */
47daa70f 4642 if (bfd_seek (abfd, mdata->hdr_offset + command->offset, SEEK_SET) != 0
46d1c23b 4643 || bfd_bread (&raw, BFD_MACH_O_LC_SIZE, abfd) != BFD_MACH_O_LC_SIZE)
452216ab 4644 return FALSE;
3af9a47b 4645
46d1c23b
TG		 4646 cmd = bfd_h_get_32 (abfd, raw.cmd);
4647 command->type = cmd & ~BFD_MACH_O_LC_REQ_DYLD;
4648 command->type_required = cmd & BFD_MACH_O_LC_REQ_DYLD ? TRUE : FALSE;
4649 command->len = bfd_h_get_32 (abfd, raw.cmdsize);
3af9a47b
NC		 4650
4651 switch (command->type)
4652 {
4653 case BFD_MACH_O_LC_SEGMENT:
452216ab
TG		 4654 if (!bfd_mach_o_read_segment_32 (abfd, command))
4655 return FALSE;
1e8a024a
TG		 4656 break;
4657 case BFD_MACH_O_LC_SEGMENT_64:
452216ab
TG		 4658 if (!bfd_mach_o_read_segment_64 (abfd, command))
4659 return FALSE;
3af9a47b
NC		 4660 break;
4661 case BFD_MACH_O_LC_SYMTAB:
452216ab
TG		 4662 if (!bfd_mach_o_read_symtab (abfd, command))
4663 return FALSE;
3af9a47b
NC		 4664 break;
4665 case BFD_MACH_O_LC_SYMSEG:
4666 break;
4667 case BFD_MACH_O_LC_THREAD:
4668 case BFD_MACH_O_LC_UNIXTHREAD:
452216ab
TG		 4669 if (!bfd_mach_o_read_thread (abfd, command))
4670 return FALSE;
3af9a47b
NC		 4671 break;
4672 case BFD_MACH_O_LC_LOAD_DYLINKER:
4673 case BFD_MACH_O_LC_ID_DYLINKER:
10be66a4 4674 case BFD_MACH_O_LC_DYLD_ENVIRONMENT:
452216ab
TG		 4675 if (!bfd_mach_o_read_dylinker (abfd, command))
4676 return FALSE;
3af9a47b
NC		 4677 break;
4678 case BFD_MACH_O_LC_LOAD_DYLIB:
fbe383b9 4679 case BFD_MACH_O_LC_LAZY_LOAD_DYLIB:
3af9a47b
NC		 4680 case BFD_MACH_O_LC_ID_DYLIB:
4681 case BFD_MACH_O_LC_LOAD_WEAK_DYLIB:
046b007d 4682 case BFD_MACH_O_LC_REEXPORT_DYLIB:
73017762 4683 case BFD_MACH_O_LC_LOAD_UPWARD_DYLIB:
452216ab
TG		 4684 if (!bfd_mach_o_read_dylib (abfd, command))
4685 return FALSE;
3af9a47b
NC		 4686 break;
4687 case BFD_MACH_O_LC_PREBOUND_DYLIB:
452216ab
TG		 4688 if (!bfd_mach_o_read_prebound_dylib (abfd, command))
4689 return FALSE;
3af9a47b
NC		 4690 break;
4691 case BFD_MACH_O_LC_LOADFVMLIB:
4692 case BFD_MACH_O_LC_IDFVMLIB:
452216ab
TG		 4693 if (!bfd_mach_o_read_fvmlib (abfd, command))
4694 return FALSE;
9f4a5bd1 4695 break;
3af9a47b
NC		 4696 case BFD_MACH_O_LC_IDENT:
4697 case BFD_MACH_O_LC_FVMFILE:
4698 case BFD_MACH_O_LC_PREPAGE:
4699 case BFD_MACH_O_LC_ROUTINES:
9b02d212 4700 case BFD_MACH_O_LC_ROUTINES_64:
046b007d 4701 break;
3af9a47b 4702 case BFD_MACH_O_LC_SUB_FRAMEWORK:
046b007d
TG		 4703 case BFD_MACH_O_LC_SUB_UMBRELLA:
4704 case BFD_MACH_O_LC_SUB_LIBRARY:
4705 case BFD_MACH_O_LC_SUB_CLIENT:
0c9b2b4c 4706 case BFD_MACH_O_LC_RPATH:
452216ab 4707 if (!bfd_mach_o_read_str (abfd, command))
07d6d2b8 4708 return FALSE;
3af9a47b
NC		 4709 break;
4710 case BFD_MACH_O_LC_DYSYMTAB:
452216ab
TG		 4711 if (!bfd_mach_o_read_dysymtab (abfd, command))
4712 return FALSE;
3af9a47b 4713 break;
3af9a47b 4714 case BFD_MACH_O_LC_PREBIND_CKSUM:
452216ab
TG		 4715 if (!bfd_mach_o_read_prebind_cksum (abfd, command))
4716 return FALSE;
7a79c514
TG		 4717 break;
4718 case BFD_MACH_O_LC_TWOLEVEL_HINTS:
452216ab
TG		 4719 if (!bfd_mach_o_read_twolevel_hints (abfd, command))
4720 return FALSE;
3af9a47b 4721 break;
15e1c58a 4722 case BFD_MACH_O_LC_UUID:
452216ab
TG		 4723 if (!bfd_mach_o_read_uuid (abfd, command))
4724 return FALSE;
15e1c58a
TG		 4725 break;
4726 case BFD_MACH_O_LC_CODE_SIGNATURE:
846b9259 4727 case BFD_MACH_O_LC_SEGMENT_SPLIT_INFO:
edbdea0e 4728 case BFD_MACH_O_LC_FUNCTION_STARTS:
1778ad74
TG		 4729 case BFD_MACH_O_LC_DATA_IN_CODE:
4730 case BFD_MACH_O_LC_DYLIB_CODE_SIGN_DRS:
47daa70f 4731 case BFD_MACH_O_LC_LINKER_OPTIMIZATION_HINT:
452216ab
TG		 4732 if (!bfd_mach_o_read_linkedit (abfd, command))
4733 return FALSE;
15e1c58a 4734 break;
fc55a902
TG		 4735 case BFD_MACH_O_LC_ENCRYPTION_INFO:
4736 if (!bfd_mach_o_read_encryption_info (abfd, command))
452216ab 4737 return FALSE;
fc55a902 4738 break;
47daa70f
TG		 4739 case BFD_MACH_O_LC_ENCRYPTION_INFO_64:
4740 if (!bfd_mach_o_read_encryption_info_64 (abfd, command))
4741 return FALSE;
4742 break;
ad86f1fb 4743 case BFD_MACH_O_LC_DYLD_INFO:
452216ab
TG		 4744 if (!bfd_mach_o_read_dyld_info (abfd, command))
4745 return FALSE;
ad86f1fb 4746 break;
edbdea0e
TG		 4747 case BFD_MACH_O_LC_VERSION_MIN_MACOSX:
4748 case BFD_MACH_O_LC_VERSION_MIN_IPHONEOS:
47daa70f 4749 case BFD_MACH_O_LC_VERSION_MIN_WATCHOS:
edbdea0e 4750 if (!bfd_mach_o_read_version_min (abfd, command))
452216ab 4751 return FALSE;
edbdea0e 4752 break;
1778ad74
TG		 4753 case BFD_MACH_O_LC_MAIN:
4754 if (!bfd_mach_o_read_main (abfd, command))
452216ab 4755 return FALSE;
1778ad74
TG		 4756 break;
4757 case BFD_MACH_O_LC_SOURCE_VERSION:
4758 if (!bfd_mach_o_read_source_version (abfd, command))
452216ab 4759 return FALSE;
1778ad74 4760 break;
3af9a47b 4761 default:
86eafac0 4762 command->len = 0;
871b3ab2 4763 _bfd_error_handler (_("%pB: unknown load command %#x"),
d42c267e 4764 abfd, command->type);
86eafac0 4765 return FALSE;
3af9a47b
NC		 4766 }
4767
452216ab 4768 return TRUE;
3af9a47b
NC		 4769}
4770
4771static void
116c20d2 4772bfd_mach_o_flatten_sections (bfd *abfd)
3af9a47b 4773{
046b007d 4774 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
c9ffd2ea 4775 bfd_mach_o_load_command *cmd;
3af9a47b 4776 long csect = 0;
a95a4550 4777
15e1c58a 4778 /* Count total number of sections. */
3af9a47b
NC		 4779 mdata->nsects = 0;
4780
c9ffd2ea 4781 for (cmd = mdata->first_command; cmd != NULL; cmd = cmd->next)
3af9a47b 4782 {
c9ffd2ea
TG		 4783 if (cmd->type == BFD_MACH_O_LC_SEGMENT
4784 || cmd->type == BFD_MACH_O_LC_SEGMENT_64)
3af9a47b 4785 {
c9ffd2ea 4786 bfd_mach_o_segment_command *seg = &cmd->command.segment;
e84d6fca 4787
3af9a47b
NC		 4788 mdata->nsects += seg->nsects;
4789 }
4790 }
4791
15e1c58a 4792 /* Allocate sections array. */
64d29018
NC		 4793 mdata->sections = bfd_alloc2 (abfd,
4794 mdata->nsects, sizeof (bfd_mach_o_section *));
15e1c58a
TG		 4795
4796 /* Fill the array. */
3af9a47b
NC		 4797 csect = 0;
4798
c9ffd2ea 4799 for (cmd = mdata->first_command; cmd != NULL; cmd = cmd->next)
3af9a47b 4800 {
c9ffd2ea
TG		 4801 if (cmd->type == BFD_MACH_O_LC_SEGMENT
4802 || cmd->type == BFD_MACH_O_LC_SEGMENT_64)
3af9a47b 4803 {
c9ffd2ea 4804 bfd_mach_o_segment_command *seg = &cmd->command.segment;
07d6d2b8 4805 bfd_mach_o_section *sec;
3af9a47b
NC		 4806
4807 BFD_ASSERT (csect + seg->nsects <= mdata->nsects);
4808
07d6d2b8 4809 for (sec = seg->sect_head; sec != NULL; sec = sec->next)
f1bde64c 4810 mdata->sections[csect++] = sec;
3af9a47b
NC		 4811 }
4812 }
4813}
4814
afbb9e17 4815static bfd_boolean
116c20d2 4816bfd_mach_o_scan_start_address (bfd *abfd)
3af9a47b 4817{
046b007d 4818 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
c9ffd2ea
TG		 4819 bfd_mach_o_thread_command *thr = NULL;
4820 bfd_mach_o_load_command *cmd;
3af9a47b
NC		 4821 unsigned long i;
4822
c9ffd2ea
TG		 4823 for (cmd = mdata->first_command; cmd != NULL; cmd = cmd->next)
4824 if (cmd->type == BFD_MACH_O_LC_THREAD
4825 || cmd->type == BFD_MACH_O_LC_UNIXTHREAD)
afbb9e17 4826 {
07d6d2b8
AM		 4827 thr = &cmd->command.thread;
4828 break;
afbb9e17 4829 }
c9ffd2ea 4830 else if (cmd->type == BFD_MACH_O_LC_MAIN && mdata->nsects > 1)
c0fd7846 4831 {
c9ffd2ea 4832 bfd_mach_o_main_command *main_cmd = &cmd->command.main;
c0fd7846 4833 bfd_mach_o_section *text_sect = mdata->sections[0];
c9ffd2ea 4834
c0fd7846
TG		 4835 if (text_sect)
4836 {
4837 abfd->start_address = main_cmd->entryoff
4838 + (text_sect->addr - text_sect->offset);
4839 return TRUE;
4840 }
4841 }
3af9a47b 4842
5ee43bc4 4843 /* An object file has no start address, so do not fail if not found. */
c9ffd2ea 4844 if (thr == NULL)
5ee43bc4 4845 return TRUE;
3af9a47b 4846
afbb9e17 4847 /* FIXME: create a subtarget hook ? */
c9ffd2ea 4848 for (i = 0; i < thr->nflavours; i++)
3af9a47b 4849 {
a95a4550 4850 if ((mdata->header.cputype == BFD_MACH_O_CPU_TYPE_I386)
c9ffd2ea 4851 && (thr->flavours[i].flavour == BFD_MACH_O_x86_THREAD_STATE32))
3af9a47b
NC		 4852 {
4853 unsigned char buf[4];
4854
c9ffd2ea 4855 if (bfd_seek (abfd, thr->flavours[i].offset + 40, SEEK_SET) != 0
07d6d2b8 4856 || bfd_bread (buf, 4, abfd) != 4)
afbb9e17 4857 return FALSE;
3af9a47b
NC		 4858
4859 abfd->start_address = bfd_h_get_32 (abfd, buf);
4860 }
a95a4550 4861 else if ((mdata->header.cputype == BFD_MACH_O_CPU_TYPE_POWERPC)
c9ffd2ea 4862 && (thr->flavours[i].flavour == BFD_MACH_O_PPC_THREAD_STATE))
3af9a47b
NC		 4863 {
4864 unsigned char buf[4];
4865
c9ffd2ea 4866 if (bfd_seek (abfd, thr->flavours[i].offset + 0, SEEK_SET) != 0
07d6d2b8 4867 || bfd_bread (buf, 4, abfd) != 4)
afbb9e17 4868 return FALSE;
3af9a47b
NC		 4869
4870 abfd->start_address = bfd_h_get_32 (abfd, buf);
4871 }
1e8a024a 4872 else if ((mdata->header.cputype == BFD_MACH_O_CPU_TYPE_POWERPC_64)
07d6d2b8
AM		 4873 && (thr->flavours[i].flavour == BFD_MACH_O_PPC_THREAD_STATE64))
4874 {
4875 unsigned char buf[8];
1e8a024a 4876
07d6d2b8
AM		 4877 if (bfd_seek (abfd, thr->flavours[i].offset + 0, SEEK_SET) != 0
4878 || bfd_bread (buf, 8, abfd) != 8)
4879 return FALSE;
1e8a024a 4880
07d6d2b8
AM		 4881 abfd->start_address = bfd_h_get_64 (abfd, buf);
4882 }
1e8a024a 4883 else if ((mdata->header.cputype == BFD_MACH_O_CPU_TYPE_X86_64)
07d6d2b8
AM		 4884 && (thr->flavours[i].flavour == BFD_MACH_O_x86_THREAD_STATE64))
4885 {
4886 unsigned char buf[8];
1e8a024a 4887
07d6d2b8
AM		 4888 if (bfd_seek (abfd, thr->flavours[i].offset + (16 * 8), SEEK_SET) != 0
4889 || bfd_bread (buf, 8, abfd) != 8)
4890 return FALSE;
1e8a024a 4891
07d6d2b8
AM		 4892 abfd->start_address = bfd_h_get_64 (abfd, buf);
4893 }
3af9a47b
NC		 4894 }
4895
afbb9e17 4896 return TRUE;
3af9a47b
NC		 4897}
4898
42fa0891
TG		 4899bfd_boolean
4900bfd_mach_o_set_arch_mach (bfd *abfd,
07d6d2b8
AM		 4901 enum bfd_architecture arch,
4902 unsigned long machine)
42fa0891
TG		 4903{
4904 bfd_mach_o_backend_data *bed = bfd_mach_o_get_backend_data (abfd);
4905
4906 /* If this isn't the right architecture for this backend, and this
4907 isn't the generic backend, fail. */
4908 if (arch != bed->arch
4909 && arch != bfd_arch_unknown
4910 && bed->arch != bfd_arch_unknown)
4911 return FALSE;
4912
4913 return bfd_default_set_arch_mach (abfd, arch, machine);
4914}
4915
afbb9e17 4916static bfd_boolean
116c20d2
NC		 4917bfd_mach_o_scan (bfd *abfd,
4918 bfd_mach_o_header *header,
4919 bfd_mach_o_data_struct *mdata)
3af9a47b
NC		 4920{
4921 unsigned int i;
3af9a47b
NC		 4922 enum bfd_architecture cputype;
4923 unsigned long cpusubtype;
1e8a024a
TG		 4924 unsigned int hdrsize;
4925
c2f09c75 4926 hdrsize = mach_o_wide_p (header) ?
154a1ee5 4927 BFD_MACH_O_HEADER_64_SIZE : BFD_MACH_O_HEADER_SIZE;
3af9a47b 4928
3af9a47b 4929 mdata->header = *header;
3af9a47b 4930
154a1ee5 4931 abfd->flags = abfd->flags & BFD_IN_MEMORY;
15e1c58a
TG		 4932 switch (header->filetype)
4933 {
4934 case BFD_MACH_O_MH_OBJECT:
4935 abfd->flags |= HAS_RELOC;
4936 break;
4937 case BFD_MACH_O_MH_EXECUTE:
4938 abfd->flags |= EXEC_P;
4939 break;
4940 case BFD_MACH_O_MH_DYLIB:
4941 case BFD_MACH_O_MH_BUNDLE:
4942 abfd->flags |= DYNAMIC;
4943 break;
4944 }
4945
3af9a47b
NC		 4946 abfd->tdata.mach_o_data = mdata;
4947
e84d6fca
AM		 4948 bfd_mach_o_convert_architecture (header->cputype, header->cpusubtype,
4949 &cputype, &cpusubtype);
3af9a47b
NC		 4950 if (cputype == bfd_arch_unknown)
4951 {
4eca0228 4952 _bfd_error_handler
695344c0 4953 /* xgettext:c-format */
07d6d2b8
AM		 4954 (_("bfd_mach_o_scan: unknown architecture 0x%lx/0x%lx"),
4955 header->cputype, header->cpusubtype);
afbb9e17 4956 return FALSE;
3af9a47b
NC		 4957 }
4958
4959 bfd_set_arch_mach (abfd, cputype, cpusubtype);
a95a4550 4960
3af9a47b
NC		 4961 if (header->ncmds != 0)
4962 {
c9ffd2ea
TG		 4963 bfd_mach_o_load_command *cmd;
4964
4965 mdata->first_command = NULL;
4966 mdata->last_command = NULL;
64d29018
NC		 4967
4968 cmd = bfd_alloc2 (abfd, header->ncmds, sizeof (bfd_mach_o_load_command));
c9ffd2ea 4969 if (cmd == NULL)
afbb9e17 4970 return FALSE;
a95a4550 4971
3af9a47b
NC		 4972 for (i = 0; i < header->ncmds; i++)
4973 {
c9ffd2ea
TG		 4974 bfd_mach_o_load_command *cur = &cmd[i];
4975
4976 bfd_mach_o_append_command (abfd, cur);
3af9a47b
NC		 4977
4978 if (i == 0)
1e8a024a 4979 cur->offset = hdrsize;
3af9a47b
NC		 4980 else
4981 {
c9ffd2ea 4982 bfd_mach_o_load_command *prev = &cmd[i - 1];
3af9a47b
NC		 4983 cur->offset = prev->offset + prev->len;
4984 }
4985
452216ab 4986 if (!bfd_mach_o_read_command (abfd, cur))
afbb9e17 4987 return FALSE;
a95a4550 4988 }
3af9a47b
NC		 4989 }
4990
c0fd7846
TG		 4991 /* Sections should be flatten before scanning start address. */
4992 bfd_mach_o_flatten_sections (abfd);
4993 if (!bfd_mach_o_scan_start_address (abfd))
afbb9e17 4994 return FALSE;
3af9a47b 4995
afbb9e17 4996 return TRUE;
3af9a47b
NC		 4997}
4998
b34976b6 4999bfd_boolean
154a1ee5 5000bfd_mach_o_mkobject_init (bfd *abfd)
3af9a47b
NC		 5001{
5002 bfd_mach_o_data_struct *mdata = NULL;
5003
b30a5d18 5004 mdata = bfd_zalloc (abfd, sizeof (bfd_mach_o_data_struct));
3af9a47b 5005 if (mdata == NULL)
b34976b6 5006 return FALSE;
3af9a47b
NC		 5007 abfd->tdata.mach_o_data = mdata;
5008
5009 mdata->header.magic = 0;
5010 mdata->header.cputype = 0;
5011 mdata->header.cpusubtype = 0;
5012 mdata->header.filetype = 0;
5013 mdata->header.ncmds = 0;
5014 mdata->header.sizeofcmds = 0;
5015 mdata->header.flags = 0;
5016 mdata->header.byteorder = BFD_ENDIAN_UNKNOWN;
c9ffd2ea
TG		 5017 mdata->first_command = NULL;
5018 mdata->last_command = NULL;
3af9a47b
NC		 5019 mdata->nsects = 0;
5020 mdata->sections = NULL;
4434114c 5021 mdata->dyn_reloc_cache = NULL;
3af9a47b 5022
b34976b6 5023 return TRUE;
3af9a47b
NC		 5024}
5025
42fa0891
TG		 5026static bfd_boolean
5027bfd_mach_o_gen_mkobject (bfd *abfd)
5028{
5029 bfd_mach_o_data_struct *mdata;
5030
5031 if (!bfd_mach_o_mkobject_init (abfd))
5032 return FALSE;
5033
5034 mdata = bfd_mach_o_get_data (abfd);
5035 mdata->header.magic = BFD_MACH_O_MH_MAGIC;
5036 mdata->header.cputype = 0;
5037 mdata->header.cpusubtype = 0;
5038 mdata->header.byteorder = abfd->xvec->byteorder;
5039 mdata->header.version = 1;
5040
5041 return TRUE;
5042}
5043
3af9a47b 5044const bfd_target *
154a1ee5 5045bfd_mach_o_header_p (bfd *abfd,
47daa70f 5046 file_ptr hdr_off,
07d6d2b8
AM		 5047 bfd_mach_o_filetype filetype,
5048 bfd_mach_o_cpu_type cputype)
3af9a47b
NC		 5049{
5050 bfd_mach_o_header header;
c9ba0c87 5051 bfd_mach_o_data_struct *mdata;
3af9a47b 5052
47daa70f 5053 if (!bfd_mach_o_read_header (abfd, hdr_off, &header))
e84d6fca 5054 goto wrong;
3af9a47b 5055
e84d6fca
AM		 5056 if (! (header.byteorder == BFD_ENDIAN_BIG
5057 || header.byteorder == BFD_ENDIAN_LITTLE))
3af9a47b 5058 {
d42c267e
AM		 5059 _bfd_error_handler (_("unknown header byte-order value %#x"),
5060 header.byteorder);
e84d6fca 5061 goto wrong;
3af9a47b
NC		 5062 }
5063
e84d6fca
AM		 5064 if (! ((header.byteorder == BFD_ENDIAN_BIG
5065 && abfd->xvec->byteorder == BFD_ENDIAN_BIG
5066 && abfd->xvec->header_byteorder == BFD_ENDIAN_BIG)
5067 || (header.byteorder == BFD_ENDIAN_LITTLE
5068 && abfd->xvec->byteorder == BFD_ENDIAN_LITTLE
5069 && abfd->xvec->header_byteorder == BFD_ENDIAN_LITTLE)))
5070 goto wrong;
3af9a47b 5071
154a1ee5
TG		 5072 /* Check cputype and filetype.
5073 In case of wildcard, do not accept magics that are handled by existing
5074 targets. */
5075 if (cputype)
5076 {
5077 if (header.cputype != cputype)
07d6d2b8 5078 goto wrong;
154a1ee5 5079 }
26954155
TG		 5080 else
5081 {
5082#ifndef BFD64
5083 /* Do not recognize 64 architectures if not configured for 64bit targets.
5084 This could happen only for generic targets. */
5085 if (mach_o_wide_p (&header))
5086 goto wrong;
5087#endif
5088 }
b22161d6 5089
154a1ee5
TG		 5090 if (filetype)
5091 {
5092 if (header.filetype != filetype)
07d6d2b8 5093 goto wrong;
154a1ee5
TG		 5094 }
5095 else
5096 {
5097 switch (header.filetype)
07d6d2b8
AM		 5098 {
5099 case BFD_MACH_O_MH_CORE:
5100 /* Handled by core_p */
5101 goto wrong;
5102 default:
5103 break;
5104 }
154a1ee5
TG		 5105 }
5106
c9ba0c87
AM		 5107 mdata = (bfd_mach_o_data_struct *) bfd_zalloc (abfd, sizeof (*mdata));
5108 if (mdata == NULL)
e84d6fca 5109 goto fail;
47daa70f 5110 mdata->hdr_offset = hdr_off;
3af9a47b 5111
c9ba0c87 5112 if (!bfd_mach_o_scan (abfd, &header, mdata))
e84d6fca 5113 goto wrong;
a95a4550 5114
3af9a47b 5115 return abfd->xvec;
e84d6fca
AM		 5116
5117 wrong:
5118 bfd_set_error (bfd_error_wrong_format);
5119
5120 fail:
e84d6fca 5121 return NULL;
3af9a47b
NC		 5122}
5123
154a1ee5
TG		 5124static const bfd_target *
5125bfd_mach_o_gen_object_p (bfd *abfd)
3af9a47b 5126{
47daa70f 5127 return bfd_mach_o_header_p (abfd, 0, 0, 0);
154a1ee5 5128}
e84d6fca 5129
154a1ee5
TG		 5130static const bfd_target *
5131bfd_mach_o_gen_core_p (bfd *abfd)
5132{
47daa70f 5133 return bfd_mach_o_header_p (abfd, 0, BFD_MACH_O_MH_CORE, 0);
3af9a47b
NC		 5134}
5135
3cc27770
TG		 5136/* Return the base address of ABFD, ie the address at which the image is
5137 mapped. The possible initial pagezero is ignored. */
5138
5139bfd_vma
5140bfd_mach_o_get_base_address (bfd *abfd)
5141{
5142 bfd_mach_o_data_struct *mdata;
c9ffd2ea 5143 bfd_mach_o_load_command *cmd;
3cc27770
TG		 5144
5145 /* Check for Mach-O. */
5146 if (!bfd_mach_o_valid (abfd))
5147 return 0;
5148 mdata = bfd_mach_o_get_data (abfd);
5149
c9ffd2ea 5150 for (cmd = mdata->first_command; cmd != NULL; cmd = cmd->next)
3cc27770 5151 {
3cc27770
TG		 5152 if ((cmd->type == BFD_MACH_O_LC_SEGMENT
5153 || cmd->type == BFD_MACH_O_LC_SEGMENT_64))
5154 {
5155 struct bfd_mach_o_segment_command *segcmd = &cmd->command.segment;
5156
5157 if (segcmd->initprot != 0)
5158 return segcmd->vmaddr;
5159 }
5160 }
5161 return 0;
5162}
5163
3af9a47b
NC		 5164typedef struct mach_o_fat_archentry
5165{
5166 unsigned long cputype;
5167 unsigned long cpusubtype;
5168 unsigned long offset;
5169 unsigned long size;
5170 unsigned long align;
3af9a47b
NC		 5171} mach_o_fat_archentry;
5172
5173typedef struct mach_o_fat_data_struct
5174{
5175 unsigned long magic;
5176 unsigned long nfat_arch;
5177 mach_o_fat_archentry *archentries;
5178} mach_o_fat_data_struct;
5179
5180const bfd_target *
47daa70f 5181bfd_mach_o_fat_archive_p (bfd *abfd)
3af9a47b 5182{
e84d6fca 5183 mach_o_fat_data_struct *adata = NULL;
46d1c23b 5184 struct mach_o_fat_header_external hdr;
3af9a47b
NC		 5185 unsigned long i;
5186
c2f09c75 5187 if (bfd_seek (abfd, 0, SEEK_SET) != 0
46d1c23b 5188 || bfd_bread (&hdr, sizeof (hdr), abfd) != sizeof (hdr))
e84d6fca 5189 goto error;
3af9a47b 5190
116c20d2 5191 adata = bfd_alloc (abfd, sizeof (mach_o_fat_data_struct));
3af9a47b 5192 if (adata == NULL)
e84d6fca 5193 goto error;
a95a4550 5194
46d1c23b
TG		 5195 adata->magic = bfd_getb32 (hdr.magic);
5196 adata->nfat_arch = bfd_getb32 (hdr.nfat_arch);
3af9a47b 5197 if (adata->magic != 0xcafebabe)
e84d6fca 5198 goto error;
27cc28f9
AS		 5199 /* Avoid matching Java bytecode files, which have the same magic number.
5200 In the Java bytecode file format this field contains the JVM version,
5201 which starts at 43.0. */
5202 if (adata->nfat_arch > 30)
5203 goto error;
3af9a47b 5204
c2f09c75 5205 adata->archentries =
64d29018 5206 bfd_alloc2 (abfd, adata->nfat_arch, sizeof (mach_o_fat_archentry));
3af9a47b 5207 if (adata->archentries == NULL)
e84d6fca 5208 goto error;
3af9a47b
NC		 5209
5210 for (i = 0; i < adata->nfat_arch; i++)
5211 {
46d1c23b
TG		 5212 struct mach_o_fat_arch_external arch;
5213 if (bfd_bread (&arch, sizeof (arch), abfd) != sizeof (arch))
e84d6fca 5214 goto error;
46d1c23b
TG		 5215 adata->archentries[i].cputype = bfd_getb32 (arch.cputype);
5216 adata->archentries[i].cpusubtype = bfd_getb32 (arch.cpusubtype);
5217 adata->archentries[i].offset = bfd_getb32 (arch.offset);
5218 adata->archentries[i].size = bfd_getb32 (arch.size);
5219 adata->archentries[i].align = bfd_getb32 (arch.align);
3af9a47b
NC		 5220 }
5221
5222 abfd->tdata.mach_o_fat_data = adata;
64d29018 5223
3af9a47b 5224 return abfd->xvec;
e84d6fca
AM		 5225
5226 error:
5227 if (adata != NULL)
5228 bfd_release (abfd, adata);
5229 bfd_set_error (bfd_error_wrong_format);
5230 return NULL;
3af9a47b
NC		 5231}
5232
a4e241ca
TG		 5233/* Set the filename for a fat binary member ABFD, whose bfd architecture is
5234 ARCH_TYPE/ARCH_SUBTYPE and corresponding entry in header is ENTRY.
5235 Set arelt_data and origin fields too. */
5236
5237static void
5238bfd_mach_o_fat_member_init (bfd *abfd,
07d6d2b8
AM		 5239 enum bfd_architecture arch_type,
5240 unsigned long arch_subtype,
5241 mach_o_fat_archentry *entry)
a4e241ca
TG		 5242{
5243 struct areltdata *areltdata;
5244 /* Create the member filename. Use ARCH_NAME. */
5245 const bfd_arch_info_type *ap = bfd_lookup_arch (arch_type, arch_subtype);
5246
5247 if (ap)
5248 {
5249 /* Use the architecture name if known. */
1be5090b 5250 abfd->filename = xstrdup (ap->printable_name);
a4e241ca
TG		 5251 }
5252 else
5253 {
5254 /* Forge a uniq id. */
5255 const size_t namelen = 2 + 8 + 1 + 2 + 8 + 1;
1be5090b 5256 char *name = xmalloc (namelen);
a4e241ca 5257 snprintf (name, namelen, "0x%lx-0x%lx",
07d6d2b8 5258 entry->cputype, entry->cpusubtype);
a4e241ca
TG		 5259 abfd->filename = name;
5260 }
5261
06e7acd7 5262 areltdata = bfd_zmalloc (sizeof (struct areltdata));
a4e241ca
TG		 5263 areltdata->parsed_size = entry->size;
5264 abfd->arelt_data = areltdata;
5265 abfd->iostream = NULL;
5266 abfd->origin = entry->offset;
5267}
5268
3af9a47b 5269bfd *
47daa70f 5270bfd_mach_o_fat_openr_next_archived_file (bfd *archive, bfd *prev)
3af9a47b 5271{
e84d6fca 5272 mach_o_fat_data_struct *adata;
3af9a47b
NC		 5273 mach_o_fat_archentry *entry = NULL;
5274 unsigned long i;
15e1c58a 5275 bfd *nbfd;
15e1c58a
TG		 5276 enum bfd_architecture arch_type;
5277 unsigned long arch_subtype;
3af9a47b 5278
e84d6fca 5279 adata = (mach_o_fat_data_struct *) archive->tdata.mach_o_fat_data;
3af9a47b
NC		 5280 BFD_ASSERT (adata != NULL);
5281
5282 /* Find index of previous entry. */
5283 if (prev == NULL)
a4e241ca
TG		 5284 {
5285 /* Start at first one. */
5286 i = 0;
5287 }
3af9a47b
NC		 5288 else
5289 {
a4e241ca 5290 /* Find index of PREV. */
3af9a47b
NC		 5291 for (i = 0; i < adata->nfat_arch; i++)
5292 {
15e1c58a 5293 if (adata->archentries[i].offset == prev->origin)
3af9a47b
NC		 5294 break;
5295 }
5296
5297 if (i == adata->nfat_arch)
5298 {
5299 /* Not found. */
5300 bfd_set_error (bfd_error_bad_value);
a95a4550 5301 return NULL;
3af9a47b 5302 }
a4e241ca
TG		 5303
5304 /* Get next entry. */
5305 i++;
5306 }
a95a4550 5307
3af9a47b
NC		 5308 if (i >= adata->nfat_arch)
5309 {
5310 bfd_set_error (bfd_error_no_more_archived_files);
5311 return NULL;
5312 }
5313
5314 entry = &adata->archentries[i];
15e1c58a
TG		 5315 nbfd = _bfd_new_bfd_contained_in (archive);
5316 if (nbfd == NULL)
5317 return NULL;
5318
15e1c58a
TG		 5319 bfd_mach_o_convert_architecture (entry->cputype, entry->cpusubtype,
5320 &arch_type, &arch_subtype);
846b9259 5321
a4e241ca
TG		 5322 bfd_mach_o_fat_member_init (nbfd, arch_type, arch_subtype, entry);
5323
846b9259 5324 bfd_set_arch_mach (nbfd, arch_type, arch_subtype);
3af9a47b 5325
15e1c58a 5326 return nbfd;
3af9a47b
NC		 5327}
5328
15bbba8d
TG		 5329/* Analogous to stat call. */
5330
5331static int
5332bfd_mach_o_fat_stat_arch_elt (bfd *abfd, struct stat *buf)
5333{
5334 if (abfd->arelt_data == NULL)
5335 {
5336 bfd_set_error (bfd_error_invalid_operation);
5337 return -1;
5338 }
5339
5340 buf->st_mtime = 0;
5341 buf->st_uid = 0;
5342 buf->st_gid = 0;
5343 buf->st_mode = 0644;
5344 buf->st_size = arelt_size (abfd);
5345
5346 return 0;
5347}
5348
846b9259
TG		 5349/* If ABFD format is FORMAT and architecture is ARCH, return it.
5350 If ABFD is a fat image containing a member that corresponds to FORMAT
5351 and ARCH, returns it.
5352 In other case, returns NULL.
5353 This function allows transparent uses of fat images. */
a4e241ca 5354
846b9259
TG		 5355bfd *
5356bfd_mach_o_fat_extract (bfd *abfd,
5357 bfd_format format,
5358 const bfd_arch_info_type *arch)
5359{
5360 bfd *res;
5361 mach_o_fat_data_struct *adata;
5362 unsigned int i;
5363
5364 if (bfd_check_format (abfd, format))
5365 {
5366 if (bfd_get_arch_info (abfd) == arch)
5367 return abfd;
5368 return NULL;
5369 }
5370 if (!bfd_check_format (abfd, bfd_archive)
5371 || abfd->xvec != &mach_o_fat_vec)
5372 return NULL;
c2f09c75 5373
846b9259
TG		 5374 /* This is a Mach-O fat image. */
5375 adata = (mach_o_fat_data_struct *) abfd->tdata.mach_o_fat_data;
5376 BFD_ASSERT (adata != NULL);
5377
5378 for (i = 0; i < adata->nfat_arch; i++)
5379 {
5380 struct mach_o_fat_archentry *e = &adata->archentries[i];
5381 enum bfd_architecture cpu_type;
5382 unsigned long cpu_subtype;
5383
5384 bfd_mach_o_convert_architecture (e->cputype, e->cpusubtype,
5385 &cpu_type, &cpu_subtype);
5386 if (cpu_type != arch->arch || cpu_subtype != arch->mach)
5387 continue;
5388
5389 /* The architecture is found. */
5390 res = _bfd_new_bfd_contained_in (abfd);
5391 if (res == NULL)
5392 return NULL;
5393
a4e241ca 5394 bfd_mach_o_fat_member_init (res, cpu_type, cpu_subtype, e);
846b9259
TG		 5395
5396 if (bfd_check_format (res, format))
5397 {
5398 BFD_ASSERT (bfd_get_arch_info (res) == arch);
5399 return res;
5400 }
5401 bfd_close (res);
5402 return NULL;
5403 }
5404
5405 return NULL;
5406}
5407
3af9a47b 5408int
116c20d2
NC		 5409bfd_mach_o_lookup_command (bfd *abfd,
5410 bfd_mach_o_load_command_type type,
5411 bfd_mach_o_load_command **mcommand)
3af9a47b 5412{
c9ffd2ea
TG		 5413 struct mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
5414 struct bfd_mach_o_load_command *cmd;
5415 unsigned int num;
3af9a47b 5416
c9ffd2ea 5417 BFD_ASSERT (mdata != NULL);
3af9a47b
NC		 5418 BFD_ASSERT (mcommand != NULL);
5419
5420 num = 0;
c9ffd2ea 5421 for (cmd = mdata->first_command; cmd != NULL; cmd = cmd->next)
3af9a47b 5422 {
3af9a47b
NC		 5423 if (cmd->type != type)
5424 continue;
5425
5426 if (num == 0)
c9ffd2ea 5427 *mcommand = cmd;
3af9a47b
NC		 5428 num++;
5429 }
5430
3af9a47b
NC		 5431 return num;
5432}
5433
5434unsigned long
116c20d2 5435bfd_mach_o_stack_addr (enum bfd_mach_o_cpu_type type)
3af9a47b
NC		 5436{
5437 switch (type)
5438 {
5439 case BFD_MACH_O_CPU_TYPE_MC680x0:
5440 return 0x04000000;
5441 case BFD_MACH_O_CPU_TYPE_MC88000:
5442 return 0xffffe000;
5443 case BFD_MACH_O_CPU_TYPE_POWERPC:
5444 return 0xc0000000;
5445 case BFD_MACH_O_CPU_TYPE_I386:
5446 return 0xc0000000;
5447 case BFD_MACH_O_CPU_TYPE_SPARC:
5448 return 0xf0000000;
5449 case BFD_MACH_O_CPU_TYPE_I860:
5450 return 0;
5451 case BFD_MACH_O_CPU_TYPE_HPPA:
e84d6fca 5452 return 0xc0000000 - 0x04000000;
3af9a47b
NC		 5453 default:
5454 return 0;
5455 }
5456}
5457
ab76eeaf
IS		 5458/* The following two tables should be kept, as far as possible, in order of
5459 most frequently used entries to optimize their use from gas. */
5460
c5012cd8 5461const bfd_mach_o_xlat_name bfd_mach_o_section_type_name[] =
046b007d
TG		 5462{
5463 { "regular", BFD_MACH_O_S_REGULAR},
ab76eeaf 5464 { "coalesced", BFD_MACH_O_S_COALESCED},
046b007d
TG		 5465 { "zerofill", BFD_MACH_O_S_ZEROFILL},
5466 { "cstring_literals", BFD_MACH_O_S_CSTRING_LITERALS},
5467 { "4byte_literals", BFD_MACH_O_S_4BYTE_LITERALS},
5468 { "8byte_literals", BFD_MACH_O_S_8BYTE_LITERALS},
ab76eeaf 5469 { "16byte_literals", BFD_MACH_O_S_16BYTE_LITERALS},
046b007d 5470 { "literal_pointers", BFD_MACH_O_S_LITERAL_POINTERS},
046b007d
TG		 5471 { "mod_init_func_pointers", BFD_MACH_O_S_MOD_INIT_FUNC_POINTERS},
5472 { "mod_fini_func_pointers", BFD_MACH_O_S_MOD_FINI_FUNC_POINTERS},
046b007d
TG		 5473 { "gb_zerofill", BFD_MACH_O_S_GB_ZEROFILL},
5474 { "interposing", BFD_MACH_O_S_INTERPOSING},
046b007d 5475 { "dtrace_dof", BFD_MACH_O_S_DTRACE_DOF},
ab76eeaf
IS		 5476 { "non_lazy_symbol_pointers", BFD_MACH_O_S_NON_LAZY_SYMBOL_POINTERS},
5477 { "lazy_symbol_pointers", BFD_MACH_O_S_LAZY_SYMBOL_POINTERS},
a4551119 5478 { "symbol_stubs", BFD_MACH_O_S_SYMBOL_STUBS},
046b007d
TG		 5479 { "lazy_dylib_symbol_pointers", BFD_MACH_O_S_LAZY_DYLIB_SYMBOL_POINTERS},
5480 { NULL, 0}
5481};
5482
c5012cd8 5483const bfd_mach_o_xlat_name bfd_mach_o_section_attribute_name[] =
046b007d 5484{
ab76eeaf
IS		 5485 { "pure_instructions", BFD_MACH_O_S_ATTR_PURE_INSTRUCTIONS },
5486 { "some_instructions", BFD_MACH_O_S_ATTR_SOME_INSTRUCTIONS },
046b007d
TG		 5487 { "loc_reloc", BFD_MACH_O_S_ATTR_LOC_RELOC },
5488 { "ext_reloc", BFD_MACH_O_S_ATTR_EXT_RELOC },
046b007d 5489 { "debug", BFD_MACH_O_S_ATTR_DEBUG },
046b007d
TG		 5490 { "live_support", BFD_MACH_O_S_ATTR_LIVE_SUPPORT },
5491 { "no_dead_strip", BFD_MACH_O_S_ATTR_NO_DEAD_STRIP },
5492 { "strip_static_syms", BFD_MACH_O_S_ATTR_STRIP_STATIC_SYMS },
5493 { "no_toc", BFD_MACH_O_S_ATTR_NO_TOC },
a4551119 5494 { "self_modifying_code", BFD_MACH_O_S_SELF_MODIFYING_CODE },
ab76eeaf 5495 { "modifying_code", BFD_MACH_O_S_SELF_MODIFYING_CODE },
046b007d
TG		 5496 { NULL, 0}
5497};
5498
a4551119 5499/* Get the section type from NAME. Return 256 if NAME is unknown. */
53d58d96
TG		 5500
5501unsigned int
ab76eeaf 5502bfd_mach_o_get_section_type_from_name (bfd *abfd, const char *name)
53d58d96 5503{
afbb9e17 5504 const bfd_mach_o_xlat_name *x;
ab76eeaf 5505 bfd_mach_o_backend_data *bed = bfd_mach_o_get_backend_data (abfd);
53d58d96
TG		 5506
5507 for (x = bfd_mach_o_section_type_name; x->name; x++)
5508 if (strcmp (x->name, name) == 0)
ab76eeaf
IS		 5509 {
5510 /* We found it... does the target support it? */
5511 if (bed->bfd_mach_o_section_type_valid_for_target == NULL
5512 || bed->bfd_mach_o_section_type_valid_for_target (x->val))
5513 return x->val; /* OK. */
5514 else
5515 break; /* Not supported. */
5516 }
a4551119
TG		 5517 /* Maximum section ID = 0xff. */
5518 return 256;
53d58d96
TG		 5519}
5520
5521/* Get the section attribute from NAME. Return -1 if NAME is unknown. */
5522
5523unsigned int
5524bfd_mach_o_get_section_attribute_from_name (const char *name)
5525{
afbb9e17 5526 const bfd_mach_o_xlat_name *x;
53d58d96
TG		 5527
5528 for (x = bfd_mach_o_section_attribute_name; x->name; x++)
5529 if (strcmp (x->name, name) == 0)
5530 return x->val;
5531 return (unsigned int)-1;
5532}
5533
3af9a47b 5534int
116c20d2
NC		 5535bfd_mach_o_core_fetch_environment (bfd *abfd,
5536 unsigned char **rbuf,
5537 unsigned int *rlen)
3af9a47b 5538{
046b007d 5539 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
3af9a47b 5540 unsigned long stackaddr = bfd_mach_o_stack_addr (mdata->header.cputype);
c9ffd2ea 5541 bfd_mach_o_load_command *cmd;
3af9a47b 5542
c9ffd2ea 5543 for (cmd = mdata->first_command; cmd != NULL; cmd = cmd->next)
3af9a47b 5544 {
c9ffd2ea 5545 bfd_mach_o_segment_command *seg;
3af9a47b 5546
c9ffd2ea 5547 if (cmd->type != BFD_MACH_O_LC_SEGMENT)
3af9a47b
NC		 5548 continue;
5549
c9ffd2ea 5550 seg = &cmd->command.segment;
3af9a47b
NC		 5551
5552 if ((seg->vmaddr + seg->vmsize) == stackaddr)
5553 {
5554 unsigned long start = seg->fileoff;
5555 unsigned long end = seg->fileoff + seg->filesize;
5556 unsigned char *buf = bfd_malloc (1024);
5557 unsigned long size = 1024;
5558
5559 for (;;)
5560 {
5561 bfd_size_type nread = 0;
5562 unsigned long offset;
5563 int found_nonnull = 0;
5564
5565 if (size > (end - start))
5566 size = (end - start);
5567
515ef31d
NC		 5568 buf = bfd_realloc_or_free (buf, size);
5569 if (buf == NULL)
5570 return -1;
c2f09c75
TG		 5571
5572 if (bfd_seek (abfd, end - size, SEEK_SET) != 0)
07d6d2b8
AM		 5573 {
5574 free (buf);
5575 return -1;
5576 }
c2f09c75 5577
3af9a47b 5578 nread = bfd_bread (buf, size, abfd);
a95a4550 5579
3af9a47b 5580 if (nread != size)
515ef31d
NC		 5581 {
5582 free (buf);
5583 return -1;
5584 }
a95a4550 5585
3af9a47b
NC		 5586 for (offset = 4; offset <= size; offset += 4)
5587 {
e84d6fca 5588 unsigned long val;
3af9a47b 5589
e84d6fca 5590 val = *((unsigned long *) (buf + size - offset));
3af9a47b
NC		 5591 if (! found_nonnull)
5592 {
5593 if (val != 0)
5594 found_nonnull = 1;
5595 }
5596 else if (val == 0x0)
5597 {
e84d6fca
AM		 5598 unsigned long bottom;
5599 unsigned long top;
3af9a47b 5600
e84d6fca
AM		 5601 bottom = seg->fileoff + seg->filesize - offset;
5602 top = seg->fileoff + seg->filesize - 4;
3af9a47b
NC		 5603 *rbuf = bfd_malloc (top - bottom);
5604 *rlen = top - bottom;
5605
5606 memcpy (*rbuf, buf + size - *rlen, *rlen);
515ef31d 5607 free (buf);
3af9a47b
NC		 5608 return 0;
5609 }
5610 }
5611
5612 if (size == (end - start))
5613 break;
5614
5615 size *= 2;
5616 }
515ef31d
NC		 5617
5618 free (buf);
3af9a47b
NC		 5619 }
5620 }
5621
5622 return -1;
5623}
5624
5625char *
116c20d2 5626bfd_mach_o_core_file_failing_command (bfd *abfd)
3af9a47b
NC		 5627{
5628 unsigned char *buf = NULL;
5629 unsigned int len = 0;
452216ab 5630 int ret;
3af9a47b
NC		 5631
5632 ret = bfd_mach_o_core_fetch_environment (abfd, &buf, &len);
5633 if (ret < 0)
5634 return NULL;
5635
f075ee0c 5636 return (char *) buf;
3af9a47b
NC		 5637}
5638
5639int
116c20d2 5640bfd_mach_o_core_file_failing_signal (bfd *abfd ATTRIBUTE_UNUSED)
3af9a47b
NC		 5641{
5642 return 0;
5643}
5644
2ca7691a
TG		 5645static bfd_mach_o_uuid_command *
5646bfd_mach_o_lookup_uuid_command (bfd *abfd)
5647{
09fe2662 5648 bfd_mach_o_load_command *uuid_cmd = NULL;
2ca7691a 5649 int ncmd = bfd_mach_o_lookup_command (abfd, BFD_MACH_O_LC_UUID, &uuid_cmd);
09fe2662 5650 if (ncmd != 1 || uuid_cmd == NULL)
2ca7691a
TG		 5651 return FALSE;
5652 return &uuid_cmd->command.uuid;
5653}
5654
5655/* Return true if ABFD is a dSYM file and its UUID matches UUID_CMD. */
5656
5657static bfd_boolean
5658bfd_mach_o_dsym_for_uuid_p (bfd *abfd, const bfd_mach_o_uuid_command *uuid_cmd)
5659{
5660 bfd_mach_o_uuid_command *dsym_uuid_cmd;
5661
5662 BFD_ASSERT (abfd);
5663 BFD_ASSERT (uuid_cmd);
5664
5665 if (!bfd_check_format (abfd, bfd_object))
5666 return FALSE;
5667
5668 if (bfd_get_flavour (abfd) != bfd_target_mach_o_flavour
5669 || bfd_mach_o_get_data (abfd) == NULL
5670 || bfd_mach_o_get_data (abfd)->header.filetype != BFD_MACH_O_MH_DSYM)
5671 return FALSE;
5672
5673 dsym_uuid_cmd = bfd_mach_o_lookup_uuid_command (abfd);
5674 if (dsym_uuid_cmd == NULL)
5675 return FALSE;
5676
5677 if (memcmp (uuid_cmd->uuid, dsym_uuid_cmd->uuid,
07d6d2b8 5678 sizeof (uuid_cmd->uuid)) != 0)
2ca7691a
TG		 5679 return FALSE;
5680
5681 return TRUE;
5682}
5683
5684/* Find a BFD in DSYM_FILENAME which matches ARCH and UUID_CMD.
5685 The caller is responsible for closing the returned BFD object and
5686 its my_archive if the returned BFD is in a fat dSYM. */
5687
5688static bfd *
5689bfd_mach_o_find_dsym (const char *dsym_filename,
07d6d2b8
AM		 5690 const bfd_mach_o_uuid_command *uuid_cmd,
5691 const bfd_arch_info_type *arch)
2ca7691a
TG		 5692{
5693 bfd *base_dsym_bfd, *dsym_bfd;
5694
5695 BFD_ASSERT (uuid_cmd);
5696
5697 base_dsym_bfd = bfd_openr (dsym_filename, NULL);
5698 if (base_dsym_bfd == NULL)
5699 return NULL;
5700
5701 dsym_bfd = bfd_mach_o_fat_extract (base_dsym_bfd, bfd_object, arch);
5702 if (bfd_mach_o_dsym_for_uuid_p (dsym_bfd, uuid_cmd))
5703 return dsym_bfd;
5704
5705 bfd_close (dsym_bfd);
5706 if (base_dsym_bfd != dsym_bfd)
5707 bfd_close (base_dsym_bfd);
5708
5709 return NULL;
5710}
5711
5712/* Return a BFD created from a dSYM file for ABFD.
5713 The caller is responsible for closing the returned BFD object, its
5714 filename, and its my_archive if the returned BFD is in a fat dSYM. */
5715
5716static bfd *
5717bfd_mach_o_follow_dsym (bfd *abfd)
5718{
5719 char *dsym_filename;
5720 bfd_mach_o_uuid_command *uuid_cmd;
5721 bfd *dsym_bfd, *base_bfd = abfd;
5722 const char *base_basename;
5723
5724 if (abfd == NULL || bfd_get_flavour (abfd) != bfd_target_mach_o_flavour)
5725 return NULL;
5726
b0cffb47 5727 if (abfd->my_archive && !bfd_is_thin_archive (abfd->my_archive))
2ca7691a
TG		 5728 base_bfd = abfd->my_archive;
5729 /* BFD may have been opened from a stream. */
5730 if (base_bfd->filename == NULL)
5731 {
5732 bfd_set_error (bfd_error_invalid_operation);
5733 return NULL;
5734 }
5735 base_basename = lbasename (base_bfd->filename);
5736
5737 uuid_cmd = bfd_mach_o_lookup_uuid_command (abfd);
5738 if (uuid_cmd == NULL)
5739 return NULL;
5740
5741 /* TODO: We assume the DWARF file has the same as the binary's.
5742 It seems apple's GDB checks all files in the dSYM bundle directory.
5743 http://opensource.apple.com/source/gdb/gdb-1708/src/gdb/macosx/macosx-tdep.c
5744 */
5745 dsym_filename = (char *)bfd_malloc (strlen (base_bfd->filename)
07d6d2b8
AM		 5746 + strlen (dsym_subdir) + 1
5747 + strlen (base_basename) + 1);
2ca7691a 5748 sprintf (dsym_filename, "%s%s/%s",
07d6d2b8 5749 base_bfd->filename, dsym_subdir, base_basename);
2ca7691a
TG		 5750
5751 dsym_bfd = bfd_mach_o_find_dsym (dsym_filename, uuid_cmd,
07d6d2b8 5752 bfd_get_arch_info (abfd));
2ca7691a
TG		 5753 if (dsym_bfd == NULL)
5754 free (dsym_filename);
5755
5756 return dsym_bfd;
5757}
5758
d9071b0c
TG		 5759bfd_boolean
5760bfd_mach_o_find_nearest_line (bfd *abfd,
d9071b0c 5761 asymbol **symbols,
fb167eb2 5762 asection *section,
d9071b0c
TG		 5763 bfd_vma offset,
5764 const char **filename_ptr,
5765 const char **functionname_ptr,
fb167eb2
AM		 5766 unsigned int *line_ptr,
5767 unsigned int *discriminator_ptr)
d9071b0c
TG		 5768{
5769 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
2ca7691a 5770 if (mdata == NULL)
d9071b0c 5771 return FALSE;
2ca7691a
TG		 5772 switch (mdata->header.filetype)
5773 {
5774 case BFD_MACH_O_MH_OBJECT:
5775 break;
5776 case BFD_MACH_O_MH_EXECUTE:
5777 case BFD_MACH_O_MH_DYLIB:
5778 case BFD_MACH_O_MH_BUNDLE:
5779 case BFD_MACH_O_MH_KEXT_BUNDLE:
5780 if (mdata->dwarf2_find_line_info == NULL)
07d6d2b8
AM		 5781 {
5782 mdata->dsym_bfd = bfd_mach_o_follow_dsym (abfd);
5783 /* When we couldn't find dSYM for this binary, we look for
5784 the debug information in the binary itself. In this way,
5785 we won't try finding separated dSYM again because
5786 mdata->dwarf2_find_line_info will be filled. */
5787 if (! mdata->dsym_bfd)
5788 break;
5789 if (! _bfd_dwarf2_slurp_debug_info (abfd, mdata->dsym_bfd,
5790 dwarf_debug_sections, symbols,
5791 &mdata->dwarf2_find_line_info,
93ee1e36 5792 FALSE))
07d6d2b8
AM		 5793 return FALSE;
5794 }
2ca7691a
TG		 5795 break;
5796 default:
5797 return FALSE;
5798 }
fb167eb2
AM		 5799 return _bfd_dwarf2_find_nearest_line (abfd, symbols, NULL, section, offset,
5800 filename_ptr, functionname_ptr,
5801 line_ptr, discriminator_ptr,
5802 dwarf_debug_sections, 0,
5803 &mdata->dwarf2_find_line_info);
d9071b0c
TG		 5804}
5805
5806bfd_boolean
5807bfd_mach_o_close_and_cleanup (bfd *abfd)
5808{
5809 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
5810 if (bfd_get_format (abfd) == bfd_object && mdata != NULL)
4434114c
TG		 5811 {
5812 _bfd_dwarf2_cleanup_debug_info (abfd, &mdata->dwarf2_find_line_info);
5813 bfd_mach_o_free_cached_info (abfd);
2ca7691a 5814 if (mdata->dsym_bfd != NULL)
07d6d2b8
AM		 5815 {
5816 bfd *fat_bfd = mdata->dsym_bfd->my_archive;
cf466c2a
NC		 5817#if 0
5818 /* FIXME: PR 19435: This calculation to find the memory allocated by
5819 bfd_mach_o_follow_dsym for the filename does not always end up
5820 selecting the correct pointer. Unfortunately this problem is
5821 very hard to reproduce on a non Mach-O native system, so until it
5822 can be traced and fixed on such a system, this code will remain
5823 commented out. This does mean that there will be a memory leak,
5824 but it is small, and happens when we are closing down, so it
c244074c 5825 should not matter too much. */
07d6d2b8
AM		 5826 char *dsym_filename = (char *)(fat_bfd
5827 ? fat_bfd->filename
5828 : mdata->dsym_bfd->filename);
cf466c2a 5829#endif
07d6d2b8
AM		 5830 bfd_close (mdata->dsym_bfd);
5831 mdata->dsym_bfd = NULL;
5832 if (fat_bfd)
5833 bfd_close (fat_bfd);
cf466c2a 5834#if 0
07d6d2b8 5835 free (dsym_filename);
cf466c2a 5836#endif
07d6d2b8 5837 }
4434114c 5838 }
dff55db0 5839
d9071b0c
TG		 5840 return _bfd_generic_close_and_cleanup (abfd);
5841}
5842
dff55db0
TG		 5843bfd_boolean bfd_mach_o_free_cached_info (bfd *abfd)
5844{
5845 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
5846 asection *asect;
5847 free (mdata->dyn_reloc_cache);
5848 mdata->dyn_reloc_cache = NULL;
5849 for (asect = abfd->sections; asect != NULL; asect = asect->next)
5850 {
5851 free (asect->relocation);
5852 asect->relocation = NULL;
5853 }
5854
5855 return TRUE;
5856}
5857
68ffbac6 5858#define bfd_mach_o_bfd_reloc_type_lookup _bfd_norelocs_bfd_reloc_type_lookup
92bc0e80
TG		 5859#define bfd_mach_o_bfd_reloc_name_lookup _bfd_norelocs_bfd_reloc_name_lookup
5860
bcb51645 5861#define bfd_mach_o_canonicalize_one_reloc NULL
92bc0e80 5862#define bfd_mach_o_swap_reloc_out NULL
b32e07d7 5863#define bfd_mach_o_print_thread NULL
a4551119 5864#define bfd_mach_o_tgt_seg_table NULL
ab76eeaf 5865#define bfd_mach_o_section_type_valid_for_tgt NULL
92bc0e80 5866
07d6d2b8
AM		 5867#define TARGET_NAME mach_o_be_vec
5868#define TARGET_STRING "mach-o-be"
42fa0891 5869#define TARGET_ARCHITECTURE bfd_arch_unknown
4384b284 5870#define TARGET_PAGESIZE 1
07d6d2b8
AM		 5871#define TARGET_BIG_ENDIAN 1
5872#define TARGET_ARCHIVE 0
b93a1992 5873#define TARGET_PRIORITY 1
3af9a47b
NC		 5874#include "mach-o-target.c"
5875
5876#undef TARGET_NAME
5877#undef TARGET_STRING
42fa0891 5878#undef TARGET_ARCHITECTURE
4384b284 5879#undef TARGET_PAGESIZE
3af9a47b
NC		 5880#undef TARGET_BIG_ENDIAN
5881#undef TARGET_ARCHIVE
b93a1992 5882#undef TARGET_PRIORITY
3af9a47b 5883
07d6d2b8
AM		 5884#define TARGET_NAME mach_o_le_vec
5885#define TARGET_STRING "mach-o-le"
42fa0891 5886#define TARGET_ARCHITECTURE bfd_arch_unknown
4384b284 5887#define TARGET_PAGESIZE 1
07d6d2b8
AM		 5888#define TARGET_BIG_ENDIAN 0
5889#define TARGET_ARCHIVE 0
b93a1992 5890#define TARGET_PRIORITY 1
3af9a47b
NC		 5891
5892#include "mach-o-target.c"
5893
5894#undef TARGET_NAME
5895#undef TARGET_STRING
42fa0891 5896#undef TARGET_ARCHITECTURE
4384b284 5897#undef TARGET_PAGESIZE
3af9a47b
NC		 5898#undef TARGET_BIG_ENDIAN
5899#undef TARGET_ARCHIVE
b93a1992 5900#undef TARGET_PRIORITY
3af9a47b 5901
8f95b6e4 5902/* Not yet handled: creating an archive. */
07d6d2b8 5903#define bfd_mach_o_mkarchive _bfd_noarchive_mkarchive
8f95b6e4 5904
d00dd7dc 5905#define bfd_mach_o_close_and_cleanup _bfd_bool_bfd_true
47daa70f 5906
8f95b6e4 5907/* Not used. */
07d6d2b8 5908#define bfd_mach_o_generic_stat_arch_elt bfd_mach_o_fat_stat_arch_elt
47daa70f
TG		 5909#define bfd_mach_o_openr_next_archived_file bfd_mach_o_fat_openr_next_archived_file
5910#define bfd_mach_o_archive_p bfd_mach_o_fat_archive_p
8f95b6e4 5911
07d6d2b8
AM		 5912#define TARGET_NAME mach_o_fat_vec
5913#define TARGET_STRING "mach-o-fat"
42fa0891 5914#define TARGET_ARCHITECTURE bfd_arch_unknown
4384b284 5915#define TARGET_PAGESIZE 1
07d6d2b8
AM		 5916#define TARGET_BIG_ENDIAN 1
5917#define TARGET_ARCHIVE 1
b93a1992 5918#define TARGET_PRIORITY 0
3af9a47b
NC		 5919
5920#include "mach-o-target.c"
5921
5922#undef TARGET_NAME
5923#undef TARGET_STRING
42fa0891 5924#undef TARGET_ARCHITECTURE
4384b284 5925#undef TARGET_PAGESIZE
3af9a47b
NC		 5926#undef TARGET_BIG_ENDIAN
5927#undef TARGET_ARCHIVE
b93a1992 5928#undef TARGET_PRIORITY
GDB Binutils - Deliverables
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