1 /* Mach-O support for BFD.
2 Copyright (C) 1999-2022 Free Software Foundation, Inc.
4 This file is part of BFD, the Binary File Descriptor library.
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
8 the Free Software Foundation; either version 3 of the License, or
9 (at your option) any later version.
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.
16 You should have received a copy of the GNU General Public License
17 along with this program; if not, write to the Free Software
18 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
19 MA 02110-1301, USA. */
25 #include "libiberty.h"
27 #include "aout/stab_gnu.h"
28 #include "mach-o/reloc.h"
29 #include "mach-o/external.h"
34 #define bfd_mach_o_object_p bfd_mach_o_gen_object_p
35 #define bfd_mach_o_core_p bfd_mach_o_gen_core_p
36 #define bfd_mach_o_mkobject bfd_mach_o_gen_mkobject
38 #define FILE_ALIGN(off, algn) \
39 (((off) + ((ufile_ptr) 1 << (algn)) - 1) & ((ufile_ptr) -1 << (algn)))
42 bfd_mach_o_read_dyld_content (bfd
*abfd
, bfd_mach_o_dyld_info_command
*cmd
);
45 bfd_mach_o_version (bfd
*abfd
)
47 bfd_mach_o_data_struct
*mdata
= NULL
;
49 BFD_ASSERT (bfd_mach_o_valid (abfd
));
50 mdata
= bfd_mach_o_get_data (abfd
);
52 return mdata
->header
.version
;
56 bfd_mach_o_valid (bfd
*abfd
)
58 if (abfd
== NULL
|| abfd
->xvec
== NULL
)
61 if (abfd
->xvec
->flavour
!= bfd_target_mach_o_flavour
)
64 if (bfd_mach_o_get_data (abfd
) == NULL
)
70 mach_o_wide_p (bfd_mach_o_header
*header
)
72 switch (header
->version
)
85 bfd_mach_o_wide_p (bfd
*abfd
)
87 return mach_o_wide_p (&bfd_mach_o_get_data (abfd
)->header
);
90 /* Tables to translate well known Mach-O segment/section names to bfd
91 names. Use of canonical names (such as .text or .debug_frame) is required
95 static const mach_o_section_name_xlat text_section_names_xlat
[] =
98 SEC_CODE
| SEC_LOAD
, BFD_MACH_O_S_REGULAR
,
99 BFD_MACH_O_S_ATTR_PURE_INSTRUCTIONS
, 0},
100 { ".const", "__const",
101 SEC_READONLY
| SEC_DATA
| SEC_LOAD
, BFD_MACH_O_S_REGULAR
,
102 BFD_MACH_O_S_ATTR_NONE
, 0},
103 { ".static_const", "__static_const",
104 SEC_READONLY
| SEC_DATA
| SEC_LOAD
, BFD_MACH_O_S_REGULAR
,
105 BFD_MACH_O_S_ATTR_NONE
, 0},
106 { ".cstring", "__cstring",
107 SEC_READONLY
| SEC_DATA
| SEC_LOAD
| SEC_MERGE
| SEC_STRINGS
,
108 BFD_MACH_O_S_CSTRING_LITERALS
,
109 BFD_MACH_O_S_ATTR_NONE
, 0},
110 { ".literal4", "__literal4",
111 SEC_READONLY
| SEC_DATA
| SEC_LOAD
, BFD_MACH_O_S_4BYTE_LITERALS
,
112 BFD_MACH_O_S_ATTR_NONE
, 2},
113 { ".literal8", "__literal8",
114 SEC_READONLY
| SEC_DATA
| SEC_LOAD
, BFD_MACH_O_S_8BYTE_LITERALS
,
115 BFD_MACH_O_S_ATTR_NONE
, 3},
116 { ".literal16", "__literal16",
117 SEC_READONLY
| SEC_DATA
| SEC_LOAD
, BFD_MACH_O_S_16BYTE_LITERALS
,
118 BFD_MACH_O_S_ATTR_NONE
, 4},
119 { ".constructor", "__constructor",
120 SEC_CODE
| SEC_LOAD
, BFD_MACH_O_S_REGULAR
,
121 BFD_MACH_O_S_ATTR_NONE
, 0},
122 { ".destructor", "__destructor",
123 SEC_CODE
| SEC_LOAD
, BFD_MACH_O_S_REGULAR
,
124 BFD_MACH_O_S_ATTR_NONE
, 0},
125 { ".eh_frame", "__eh_frame",
126 SEC_READONLY
| SEC_DATA
| SEC_LOAD
, BFD_MACH_O_S_COALESCED
,
127 BFD_MACH_O_S_ATTR_LIVE_SUPPORT
128 | BFD_MACH_O_S_ATTR_STRIP_STATIC_SYMS
129 | BFD_MACH_O_S_ATTR_NO_TOC
, 2},
130 { NULL
, NULL
, 0, 0, 0, 0}
133 /* __DATA Segment. */
134 static const mach_o_section_name_xlat data_section_names_xlat
[] =
137 SEC_DATA
| SEC_LOAD
, BFD_MACH_O_S_REGULAR
,
138 BFD_MACH_O_S_ATTR_NONE
, 0},
140 SEC_NO_FLAGS
, BFD_MACH_O_S_ZEROFILL
,
141 BFD_MACH_O_S_ATTR_NONE
, 0},
142 { ".const_data", "__const",
143 SEC_DATA
| SEC_LOAD
, BFD_MACH_O_S_REGULAR
,
144 BFD_MACH_O_S_ATTR_NONE
, 0},
145 { ".static_data", "__static_data",
146 SEC_DATA
| SEC_LOAD
, BFD_MACH_O_S_REGULAR
,
147 BFD_MACH_O_S_ATTR_NONE
, 0},
148 { ".mod_init_func", "__mod_init_func",
149 SEC_DATA
| SEC_LOAD
, BFD_MACH_O_S_MOD_INIT_FUNC_POINTERS
,
150 BFD_MACH_O_S_ATTR_NONE
, 2},
151 { ".mod_term_func", "__mod_term_func",
152 SEC_DATA
| SEC_LOAD
, BFD_MACH_O_S_MOD_FINI_FUNC_POINTERS
,
153 BFD_MACH_O_S_ATTR_NONE
, 2},
155 SEC_DATA
| SEC_LOAD
, BFD_MACH_O_S_REGULAR
,
156 BFD_MACH_O_S_ATTR_NONE
, 0},
157 { ".cfstring", "__cfstring",
158 SEC_DATA
| SEC_LOAD
, BFD_MACH_O_S_REGULAR
,
159 BFD_MACH_O_S_ATTR_NONE
, 2},
160 { NULL
, NULL
, 0, 0, 0, 0}
163 /* __DWARF Segment. */
164 static const mach_o_section_name_xlat dwarf_section_names_xlat
[] =
166 { ".debug_frame", "__debug_frame",
167 SEC_DEBUGGING
, BFD_MACH_O_S_REGULAR
,
168 BFD_MACH_O_S_ATTR_DEBUG
, 0},
169 { ".debug_info", "__debug_info",
170 SEC_DEBUGGING
, BFD_MACH_O_S_REGULAR
,
171 BFD_MACH_O_S_ATTR_DEBUG
, 0},
172 { ".debug_abbrev", "__debug_abbrev",
173 SEC_DEBUGGING
, BFD_MACH_O_S_REGULAR
,
174 BFD_MACH_O_S_ATTR_DEBUG
, 0},
175 { ".debug_aranges", "__debug_aranges",
176 SEC_DEBUGGING
, BFD_MACH_O_S_REGULAR
,
177 BFD_MACH_O_S_ATTR_DEBUG
, 0},
178 { ".debug_macinfo", "__debug_macinfo",
179 SEC_DEBUGGING
, BFD_MACH_O_S_REGULAR
,
180 BFD_MACH_O_S_ATTR_DEBUG
, 0},
181 { ".debug_line", "__debug_line",
182 SEC_DEBUGGING
, BFD_MACH_O_S_REGULAR
,
183 BFD_MACH_O_S_ATTR_DEBUG
, 0},
184 { ".debug_loc", "__debug_loc",
185 SEC_DEBUGGING
, BFD_MACH_O_S_REGULAR
,
186 BFD_MACH_O_S_ATTR_DEBUG
, 0},
187 { ".debug_pubnames", "__debug_pubnames",
188 SEC_DEBUGGING
, BFD_MACH_O_S_REGULAR
,
189 BFD_MACH_O_S_ATTR_DEBUG
, 0},
190 { ".debug_pubtypes", "__debug_pubtypes",
191 SEC_DEBUGGING
, BFD_MACH_O_S_REGULAR
,
192 BFD_MACH_O_S_ATTR_DEBUG
, 0},
193 { ".debug_str", "__debug_str",
194 SEC_DEBUGGING
, BFD_MACH_O_S_REGULAR
,
195 BFD_MACH_O_S_ATTR_DEBUG
, 0},
196 { ".debug_ranges", "__debug_ranges",
197 SEC_DEBUGGING
, BFD_MACH_O_S_REGULAR
,
198 BFD_MACH_O_S_ATTR_DEBUG
, 0},
199 { ".debug_macro", "__debug_macro",
200 SEC_DEBUGGING
, BFD_MACH_O_S_REGULAR
,
201 BFD_MACH_O_S_ATTR_DEBUG
, 0},
202 { ".debug_gdb_scripts", "__debug_gdb_scri",
203 SEC_DEBUGGING
, BFD_MACH_O_S_REGULAR
,
204 BFD_MACH_O_S_ATTR_DEBUG
, 0},
205 { NULL
, NULL
, 0, 0, 0, 0}
208 /* __OBJC Segment. */
209 static const mach_o_section_name_xlat objc_section_names_xlat
[] =
211 { ".objc_class", "__class",
212 SEC_DATA
| SEC_LOAD
, BFD_MACH_O_S_REGULAR
,
213 BFD_MACH_O_S_ATTR_NO_DEAD_STRIP
, 0},
214 { ".objc_meta_class", "__meta_class",
215 SEC_DATA
| SEC_LOAD
, BFD_MACH_O_S_REGULAR
,
216 BFD_MACH_O_S_ATTR_NO_DEAD_STRIP
, 0},
217 { ".objc_cat_cls_meth", "__cat_cls_meth",
218 SEC_DATA
| SEC_LOAD
, BFD_MACH_O_S_REGULAR
,
219 BFD_MACH_O_S_ATTR_NO_DEAD_STRIP
, 0},
220 { ".objc_cat_inst_meth", "__cat_inst_meth",
221 SEC_DATA
| SEC_LOAD
, BFD_MACH_O_S_REGULAR
,
222 BFD_MACH_O_S_ATTR_NO_DEAD_STRIP
, 0},
223 { ".objc_protocol", "__protocol",
224 SEC_DATA
| SEC_LOAD
, BFD_MACH_O_S_REGULAR
,
225 BFD_MACH_O_S_ATTR_NO_DEAD_STRIP
, 0},
226 { ".objc_string_object", "__string_object",
227 SEC_DATA
| SEC_LOAD
, BFD_MACH_O_S_REGULAR
,
228 BFD_MACH_O_S_ATTR_NO_DEAD_STRIP
, 0},
229 { ".objc_cls_meth", "__cls_meth",
230 SEC_DATA
| SEC_LOAD
, BFD_MACH_O_S_REGULAR
,
231 BFD_MACH_O_S_ATTR_NO_DEAD_STRIP
, 0},
232 { ".objc_inst_meth", "__inst_meth",
233 SEC_DATA
| SEC_LOAD
, BFD_MACH_O_S_REGULAR
,
234 BFD_MACH_O_S_ATTR_NO_DEAD_STRIP
, 0},
235 { ".objc_cls_refs", "__cls_refs",
236 SEC_DATA
| SEC_LOAD
, BFD_MACH_O_S_LITERAL_POINTERS
,
237 BFD_MACH_O_S_ATTR_NO_DEAD_STRIP
, 0},
238 { ".objc_message_refs", "__message_refs",
239 SEC_DATA
| SEC_LOAD
, BFD_MACH_O_S_LITERAL_POINTERS
,
240 BFD_MACH_O_S_ATTR_NO_DEAD_STRIP
, 0},
241 { ".objc_symbols", "__symbols",
242 SEC_DATA
| SEC_LOAD
, BFD_MACH_O_S_REGULAR
,
243 BFD_MACH_O_S_ATTR_NO_DEAD_STRIP
, 0},
244 { ".objc_category", "__category",
245 SEC_DATA
| SEC_LOAD
, BFD_MACH_O_S_REGULAR
,
246 BFD_MACH_O_S_ATTR_NO_DEAD_STRIP
, 0},
247 { ".objc_class_vars", "__class_vars",
248 SEC_DATA
| SEC_LOAD
, BFD_MACH_O_S_REGULAR
,
249 BFD_MACH_O_S_ATTR_NO_DEAD_STRIP
, 0},
250 { ".objc_instance_vars", "__instance_vars",
251 SEC_DATA
| SEC_LOAD
, BFD_MACH_O_S_REGULAR
,
252 BFD_MACH_O_S_ATTR_NO_DEAD_STRIP
, 0},
253 { ".objc_module_info", "__module_info",
254 SEC_DATA
| SEC_LOAD
, BFD_MACH_O_S_REGULAR
,
255 BFD_MACH_O_S_ATTR_NO_DEAD_STRIP
, 0},
256 { ".objc_selector_strs", "__selector_strs",
257 SEC_DATA
| SEC_LOAD
, BFD_MACH_O_S_CSTRING_LITERALS
,
258 BFD_MACH_O_S_ATTR_NO_DEAD_STRIP
, 0},
259 { ".objc_image_info", "__image_info",
260 SEC_DATA
| SEC_LOAD
, BFD_MACH_O_S_REGULAR
,
261 BFD_MACH_O_S_ATTR_NO_DEAD_STRIP
, 0},
262 { ".objc_selector_fixup", "__sel_fixup",
263 SEC_DATA
| SEC_LOAD
, BFD_MACH_O_S_REGULAR
,
264 BFD_MACH_O_S_ATTR_NO_DEAD_STRIP
, 0},
266 { ".objc1_class_ext", "__class_ext",
267 SEC_DATA
| SEC_LOAD
, BFD_MACH_O_S_REGULAR
,
268 BFD_MACH_O_S_ATTR_NO_DEAD_STRIP
, 0},
269 { ".objc1_property_list", "__property",
270 SEC_DATA
| SEC_LOAD
, BFD_MACH_O_S_REGULAR
,
271 BFD_MACH_O_S_ATTR_NO_DEAD_STRIP
, 0},
272 { ".objc1_protocol_ext", "__protocol_ext",
273 SEC_DATA
| SEC_LOAD
, BFD_MACH_O_S_REGULAR
,
274 BFD_MACH_O_S_ATTR_NO_DEAD_STRIP
, 0},
275 { NULL
, NULL
, 0, 0, 0, 0}
278 static const mach_o_segment_name_xlat segsec_names_xlat
[] =
280 { "__TEXT", text_section_names_xlat
},
281 { "__DATA", data_section_names_xlat
},
282 { "__DWARF", dwarf_section_names_xlat
},
283 { "__OBJC", objc_section_names_xlat
},
287 static const char dsym_subdir
[] = ".dSYM/Contents/Resources/DWARF";
289 /* For both cases bfd-name => mach-o name and vice versa, the specific target
290 is checked before the generic. This allows a target (e.g. ppc for cstring)
291 to override the generic definition with a more specific one. */
293 /* Fetch the translation from a Mach-O section designation (segment, section)
294 as a bfd short name, if one exists. Otherwise return NULL.
296 Allow the segment and section names to be unterminated 16 byte arrays. */
298 const mach_o_section_name_xlat
*
299 bfd_mach_o_section_data_for_mach_sect (bfd
*abfd
, const char *segname
,
300 const char *sectname
)
302 const struct mach_o_segment_name_xlat
*seg
;
303 const mach_o_section_name_xlat
*sec
;
304 bfd_mach_o_backend_data
*bed
= bfd_mach_o_get_backend_data (abfd
);
306 /* First try any target-specific translations defined... */
307 if (bed
->segsec_names_xlat
)
308 for (seg
= bed
->segsec_names_xlat
; seg
->segname
; seg
++)
309 if (strncmp (seg
->segname
, segname
, BFD_MACH_O_SEGNAME_SIZE
) == 0)
310 for (sec
= seg
->sections
; sec
->mach_o_name
; sec
++)
311 if (strncmp (sec
->mach_o_name
, sectname
,
312 BFD_MACH_O_SECTNAME_SIZE
) == 0)
315 /* ... and then the Mach-O generic ones. */
316 for (seg
= segsec_names_xlat
; seg
->segname
; seg
++)
317 if (strncmp (seg
->segname
, segname
, BFD_MACH_O_SEGNAME_SIZE
) == 0)
318 for (sec
= seg
->sections
; sec
->mach_o_name
; sec
++)
319 if (strncmp (sec
->mach_o_name
, sectname
,
320 BFD_MACH_O_SECTNAME_SIZE
) == 0)
326 /* If the bfd_name for this section is a 'canonical' form for which we
327 know the Mach-O data, return the segment name and the data for the
328 Mach-O equivalent. Otherwise return NULL. */
330 const mach_o_section_name_xlat
*
331 bfd_mach_o_section_data_for_bfd_name (bfd
*abfd
, const char *bfd_name
,
332 const char **segname
)
334 const struct mach_o_segment_name_xlat
*seg
;
335 const mach_o_section_name_xlat
*sec
;
336 bfd_mach_o_backend_data
*bed
= bfd_mach_o_get_backend_data (abfd
);
339 if (bfd_name
[0] != '.')
342 /* First try any target-specific translations defined... */
343 if (bed
->segsec_names_xlat
)
344 for (seg
= bed
->segsec_names_xlat
; seg
->segname
; seg
++)
345 for (sec
= seg
->sections
; sec
->bfd_name
; sec
++)
346 if (strcmp (bfd_name
, sec
->bfd_name
) == 0)
348 *segname
= seg
->segname
;
352 /* ... and then the Mach-O generic ones. */
353 for (seg
= segsec_names_xlat
; seg
->segname
; seg
++)
354 for (sec
= seg
->sections
; sec
->bfd_name
; sec
++)
355 if (strcmp (bfd_name
, sec
->bfd_name
) == 0)
357 *segname
= seg
->segname
;
364 /* Convert Mach-O section name to BFD.
366 Try to use standard/canonical names, for which we have tables including
367 default flag settings - which are returned. Otherwise forge a new name
368 in the form "<segmentname>.<sectionname>" this will be prefixed with
369 LC_SEGMENT. if the segment name does not begin with an underscore.
371 SEGNAME and SECTNAME are 16 byte arrays (they do not need to be NUL-
372 terminated if the name length is exactly 16 bytes - but must be if the name
373 length is less than 16 characters). */
376 bfd_mach_o_convert_section_name_to_bfd (bfd
*abfd
, const char *segname
,
377 const char *secname
, const char **name
,
380 const mach_o_section_name_xlat
*xlat
;
383 const char *pfx
= "";
386 *flags
= SEC_NO_FLAGS
;
388 /* First search for a canonical name...
389 xlat will be non-null if there is an entry for segname, secname. */
390 xlat
= bfd_mach_o_section_data_for_mach_sect (abfd
, segname
, secname
);
393 len
= strlen (xlat
->bfd_name
);
394 res
= bfd_alloc (abfd
, len
+ 1);
397 memcpy (res
, xlat
->bfd_name
, len
+ 1);
399 *flags
= xlat
->bfd_flags
;
403 /* ... else we make up a bfd name from the segment concatenated with the
406 len
= 16 + 1 + 16 + 1;
408 /* Put "LC_SEGMENT." prefix if the segment name is weird (ie doesn't start
409 with an underscore. */
410 if (segname
[0] != '_')
412 static const char seg_pfx
[] = "LC_SEGMENT.";
415 len
+= sizeof (seg_pfx
) - 1;
418 res
= bfd_alloc (abfd
, len
);
421 snprintf (res
, len
, "%s%.16s.%.16s", pfx
, segname
, secname
);
425 /* Convert a bfd section name to a Mach-O segment + section name.
427 If the name is a canonical one for which we have a Darwin match
428 return the translation table - which contains defaults for flags,
429 type, attribute and default alignment data.
431 Otherwise, expand the bfd_name (assumed to be in the form
432 "[LC_SEGMENT.]<segmentname>.<sectionname>") and return NULL. */
434 static const mach_o_section_name_xlat
*
435 bfd_mach_o_convert_section_name_to_mach_o (bfd
*abfd ATTRIBUTE_UNUSED
,
437 bfd_mach_o_section
*section
)
439 const mach_o_section_name_xlat
*xlat
;
440 const char *name
= bfd_section_name (sect
);
447 memset (section
->segname
, 0, BFD_MACH_O_SEGNAME_SIZE
+ 1);
448 memset (section
->sectname
, 0, BFD_MACH_O_SECTNAME_SIZE
+ 1);
450 /* See if is a canonical name ... */
451 xlat
= bfd_mach_o_section_data_for_bfd_name (abfd
, name
, &segname
);
454 strcpy (section
->segname
, segname
);
455 strcpy (section
->sectname
, xlat
->mach_o_name
);
459 /* .. else we convert our constructed one back to Mach-O.
460 Strip LC_SEGMENT. prefix, if present. */
461 if (strncmp (name
, "LC_SEGMENT.", 11) == 0)
465 dot
= strchr (name
, '.');
468 /* Try to split name into segment and section names. */
469 if (dot
&& dot
!= name
)
472 seclen
= len
- (dot
+ 1 - name
);
474 if (seglen
<= BFD_MACH_O_SEGNAME_SIZE
475 && seclen
<= BFD_MACH_O_SECTNAME_SIZE
)
477 memcpy (section
->segname
, name
, seglen
);
478 section
->segname
[seglen
] = 0;
479 memcpy (section
->sectname
, dot
+ 1, seclen
);
480 section
->sectname
[seclen
] = 0;
485 /* The segment and section names are both missing - don't make them
487 if (dot
&& dot
== name
)
490 /* Just duplicate the name into both segment and section. */
493 memcpy (section
->segname
, name
, len
);
494 section
->segname
[len
] = 0;
495 memcpy (section
->sectname
, name
, len
);
496 section
->sectname
[len
] = 0;
500 /* Return the size of an entry for section SEC.
501 Must be called only for symbol pointer section and symbol stubs
505 bfd_mach_o_section_get_entry_size (bfd
*abfd
, bfd_mach_o_section
*sec
)
507 switch (sec
->flags
& BFD_MACH_O_SECTION_TYPE_MASK
)
509 case BFD_MACH_O_S_NON_LAZY_SYMBOL_POINTERS
:
510 case BFD_MACH_O_S_LAZY_SYMBOL_POINTERS
:
511 return bfd_mach_o_wide_p (abfd
) ? 8 : 4;
512 case BFD_MACH_O_S_SYMBOL_STUBS
:
513 return sec
->reserved2
;
520 /* Return the number of indirect symbols for a section.
521 Must be called only for symbol pointer section and symbol stubs
525 bfd_mach_o_section_get_nbr_indirect (bfd
*abfd
, bfd_mach_o_section
*sec
)
529 elsz
= bfd_mach_o_section_get_entry_size (abfd
, sec
);
533 return sec
->size
/ elsz
;
536 /* Append command CMD to ABFD. Note that header.ncmds is not updated. */
539 bfd_mach_o_append_command (bfd
*abfd
, bfd_mach_o_load_command
*cmd
)
541 bfd_mach_o_data_struct
*mdata
= bfd_mach_o_get_data (abfd
);
543 if (mdata
->last_command
!= NULL
)
544 mdata
->last_command
->next
= cmd
;
546 mdata
->first_command
= cmd
;
547 mdata
->last_command
= cmd
;
551 /* Copy any private info we understand from the input symbol
552 to the output symbol. */
555 bfd_mach_o_bfd_copy_private_symbol_data (bfd
*ibfd ATTRIBUTE_UNUSED
,
557 bfd
*obfd ATTRIBUTE_UNUSED
,
560 bfd_mach_o_asymbol
*os
, *is
;
562 os
= (bfd_mach_o_asymbol
*)osymbol
;
563 is
= (bfd_mach_o_asymbol
*)isymbol
;
564 os
->n_type
= is
->n_type
;
565 os
->n_sect
= is
->n_sect
;
566 os
->n_desc
= is
->n_desc
;
567 os
->symbol
.udata
.i
= is
->symbol
.udata
.i
;
572 /* Copy any private info we understand from the input section
573 to the output section. */
576 bfd_mach_o_bfd_copy_private_section_data (bfd
*ibfd
, asection
*isection
,
577 bfd
*obfd
, asection
*osection
)
579 bfd_mach_o_section
*os
= bfd_mach_o_get_mach_o_section (osection
);
580 bfd_mach_o_section
*is
= bfd_mach_o_get_mach_o_section (isection
);
582 if (ibfd
->xvec
->flavour
!= bfd_target_mach_o_flavour
583 || obfd
->xvec
->flavour
!= bfd_target_mach_o_flavour
)
586 BFD_ASSERT (is
!= NULL
&& os
!= NULL
);
588 os
->flags
= is
->flags
;
589 os
->reserved1
= is
->reserved1
;
590 os
->reserved2
= is
->reserved2
;
591 os
->reserved3
= is
->reserved3
;
597 cputype (unsigned long value
)
601 case BFD_MACH_O_CPU_TYPE_VAX
: return "VAX";
602 case BFD_MACH_O_CPU_TYPE_MC680x0
: return "MC68k";
603 case BFD_MACH_O_CPU_TYPE_I386
: return "I386";
604 case BFD_MACH_O_CPU_TYPE_MIPS
: return "MIPS";
605 case BFD_MACH_O_CPU_TYPE_MC98000
: return "MC98k";
606 case BFD_MACH_O_CPU_TYPE_HPPA
: return "HPPA";
607 case BFD_MACH_O_CPU_TYPE_ARM
: return "ARM";
608 case BFD_MACH_O_CPU_TYPE_MC88000
: return "MC88K";
609 case BFD_MACH_O_CPU_TYPE_SPARC
: return "SPARC";
610 case BFD_MACH_O_CPU_TYPE_I860
: return "I860";
611 case BFD_MACH_O_CPU_TYPE_ALPHA
: return "ALPHA";
612 case BFD_MACH_O_CPU_TYPE_POWERPC
: return "PPC";
613 case BFD_MACH_O_CPU_TYPE_POWERPC_64
: return "PPC64";
614 case BFD_MACH_O_CPU_TYPE_X86_64
: return "X86_64";
615 case BFD_MACH_O_CPU_TYPE_ARM64
: return "ARM64";
616 default: return _("<unknown>");
621 cpusubtype (unsigned long cpu_type
, unsigned long cpu_subtype
, char *buffer
)
624 switch (cpu_subtype
& BFD_MACH_O_CPU_SUBTYPE_MASK
)
628 case BFD_MACH_O_CPU_SUBTYPE_LIB64
:
629 sprintf (buffer
, " (LIB64)"); break;
631 sprintf (buffer
, _("<unknown mask flags>")); break;
634 cpu_subtype
&= ~ BFD_MACH_O_CPU_SUBTYPE_MASK
;
638 case BFD_MACH_O_CPU_TYPE_X86_64
:
639 case BFD_MACH_O_CPU_TYPE_I386
:
642 case BFD_MACH_O_CPU_SUBTYPE_X86_ALL
:
643 return strcat (buffer
, " (X86_ALL)");
649 case BFD_MACH_O_CPU_TYPE_ARM
:
652 case BFD_MACH_O_CPU_SUBTYPE_ARM_ALL
:
653 return strcat (buffer
, " (ARM_ALL)");
654 case BFD_MACH_O_CPU_SUBTYPE_ARM_V4T
:
655 return strcat (buffer
, " (ARM_V4T)");
656 case BFD_MACH_O_CPU_SUBTYPE_ARM_V6
:
657 return strcat (buffer
, " (ARM_V6)");
658 case BFD_MACH_O_CPU_SUBTYPE_ARM_V5TEJ
:
659 return strcat (buffer
, " (ARM_V5TEJ)");
660 case BFD_MACH_O_CPU_SUBTYPE_ARM_XSCALE
:
661 return strcat (buffer
, " (ARM_XSCALE)");
662 case BFD_MACH_O_CPU_SUBTYPE_ARM_V7
:
663 return strcat (buffer
, " (ARM_V7)");
669 case BFD_MACH_O_CPU_TYPE_ARM64
:
672 case BFD_MACH_O_CPU_SUBTYPE_ARM64_ALL
:
673 return strcat (buffer
, " (ARM64_ALL)");
674 case BFD_MACH_O_CPU_SUBTYPE_ARM64_V8
:
675 return strcat (buffer
, " (ARM64_V8)");
685 if (cpu_subtype
!= 0)
686 return strcat (buffer
, _(" (<unknown>)"));
692 bfd_mach_o_bfd_print_private_bfd_data (bfd
*abfd
, void *ptr
)
694 FILE * file
= (FILE *) ptr
;
695 bfd_mach_o_data_struct
*mdata
= bfd_mach_o_get_data (abfd
);
698 fprintf (file
, _(" MACH-O header:\n"));
699 fprintf (file
, _(" magic: %#lx\n"), (long) mdata
->header
.magic
);
700 fprintf (file
, _(" cputype: %#lx (%s)\n"), (long) mdata
->header
.cputype
,
701 cputype (mdata
->header
.cputype
));
702 fprintf (file
, _(" cpusubtype: %#lx%s\n"), (long) mdata
->header
.cpusubtype
,
703 cpusubtype (mdata
->header
.cputype
, mdata
->header
.cpusubtype
, buff
));
704 fprintf (file
, _(" filetype: %#lx\n"), (long) mdata
->header
.filetype
);
705 fprintf (file
, _(" ncmds: %#lx\n"), (long) mdata
->header
.ncmds
);
706 fprintf (file
, _(" sizeocmds: %#lx\n"), (long) mdata
->header
.sizeofcmds
);
707 fprintf (file
, _(" flags: %#lx\n"), (long) mdata
->header
.flags
);
708 fprintf (file
, _(" version: %x\n"), mdata
->header
.version
);
713 /* Copy any private info we understand from the input bfd
714 to the output bfd. */
717 bfd_mach_o_bfd_copy_private_header_data (bfd
*ibfd
, bfd
*obfd
)
719 bfd_mach_o_data_struct
*imdata
;
720 bfd_mach_o_data_struct
*omdata
;
721 bfd_mach_o_load_command
*icmd
;
723 if (bfd_get_flavour (ibfd
) != bfd_target_mach_o_flavour
724 || bfd_get_flavour (obfd
) != bfd_target_mach_o_flavour
)
727 BFD_ASSERT (bfd_mach_o_valid (ibfd
));
728 BFD_ASSERT (bfd_mach_o_valid (obfd
));
730 imdata
= bfd_mach_o_get_data (ibfd
);
731 omdata
= bfd_mach_o_get_data (obfd
);
733 /* Copy header flags. */
734 omdata
->header
.flags
= imdata
->header
.flags
;
736 /* PR 23299. Copy the cputype. */
737 if (imdata
->header
.cputype
!= omdata
->header
.cputype
)
739 if (omdata
->header
.cputype
== 0)
740 omdata
->header
.cputype
= imdata
->header
.cputype
;
741 else if (imdata
->header
.cputype
!= 0)
742 /* Urg - what has happened ? */
743 _bfd_error_handler (_("incompatible cputypes in mach-o files: %ld vs %ld"),
744 (long) imdata
->header
.cputype
,
745 (long) omdata
->header
.cputype
);
748 /* Copy the cpusubtype. */
749 omdata
->header
.cpusubtype
= imdata
->header
.cpusubtype
;
752 for (icmd
= imdata
->first_command
; icmd
!= NULL
; icmd
= icmd
->next
)
754 bfd_mach_o_load_command
*ocmd
;
758 case BFD_MACH_O_LC_LOAD_DYLIB
:
759 case BFD_MACH_O_LC_LOAD_DYLINKER
:
760 case BFD_MACH_O_LC_DYLD_INFO
:
761 /* Command is copied. */
762 ocmd
= bfd_alloc (obfd
, sizeof (bfd_mach_o_load_command
));
766 /* Copy common fields. */
767 ocmd
->type
= icmd
->type
;
768 ocmd
->type_required
= icmd
->type_required
;
770 ocmd
->len
= icmd
->len
;
774 /* Command is not copied. */
781 case BFD_MACH_O_LC_LOAD_DYLIB
:
783 bfd_mach_o_dylib_command
*idy
= &icmd
->command
.dylib
;
784 bfd_mach_o_dylib_command
*ody
= &ocmd
->command
.dylib
;
786 ody
->name_offset
= idy
->name_offset
;
787 ody
->timestamp
= idy
->timestamp
;
788 ody
->current_version
= idy
->current_version
;
789 ody
->compatibility_version
= idy
->compatibility_version
;
790 ody
->name_str
= idy
->name_str
;
794 case BFD_MACH_O_LC_LOAD_DYLINKER
:
796 bfd_mach_o_dylinker_command
*idy
= &icmd
->command
.dylinker
;
797 bfd_mach_o_dylinker_command
*ody
= &ocmd
->command
.dylinker
;
799 ody
->name_offset
= idy
->name_offset
;
800 ody
->name_str
= idy
->name_str
;
804 case BFD_MACH_O_LC_DYLD_INFO
:
806 bfd_mach_o_dyld_info_command
*idy
= &icmd
->command
.dyld_info
;
807 bfd_mach_o_dyld_info_command
*ody
= &ocmd
->command
.dyld_info
;
809 if (bfd_mach_o_read_dyld_content (ibfd
, idy
))
811 ody
->rebase_size
= idy
->rebase_size
;
812 ody
->rebase_content
= idy
->rebase_content
;
814 ody
->bind_size
= idy
->bind_size
;
815 ody
->bind_content
= idy
->bind_content
;
817 ody
->weak_bind_size
= idy
->weak_bind_size
;
818 ody
->weak_bind_content
= idy
->weak_bind_content
;
820 ody
->lazy_bind_size
= idy
->lazy_bind_size
;
821 ody
->lazy_bind_content
= idy
->lazy_bind_content
;
823 ody
->export_size
= idy
->export_size
;
824 ody
->export_content
= idy
->export_content
;
826 /* PR 17512L: file: 730e492d. */
831 ody
->weak_bind_size
=
832 ody
->lazy_bind_size
=
833 ody
->export_size
= 0;
834 ody
->rebase_content
=
836 ody
->weak_bind_content
=
837 ody
->lazy_bind_content
=
838 ody
->export_content
= NULL
;
844 /* That command should be handled. */
848 /* Insert command. */
849 bfd_mach_o_append_command (obfd
, ocmd
);
855 /* This allows us to set up to 32 bits of flags (unless we invent some
856 fiendish scheme to subdivide). For now, we'll just set the file flags
857 without error checking - just overwrite. */
860 bfd_mach_o_bfd_set_private_flags (bfd
*abfd
, flagword flags
)
862 bfd_mach_o_data_struct
*mdata
= bfd_mach_o_get_data (abfd
);
867 mdata
->header
.flags
= flags
;
871 /* Count the total number of symbols. */
874 bfd_mach_o_count_symbols (bfd
*abfd
)
876 bfd_mach_o_data_struct
*mdata
= bfd_mach_o_get_data (abfd
);
878 if (mdata
->symtab
== NULL
)
880 return mdata
->symtab
->nsyms
;
884 bfd_mach_o_get_symtab_upper_bound (bfd
*abfd
)
886 long nsyms
= bfd_mach_o_count_symbols (abfd
);
888 return ((nsyms
+ 1) * sizeof (asymbol
*));
892 bfd_mach_o_canonicalize_symtab (bfd
*abfd
, asymbol
**alocation
)
894 bfd_mach_o_data_struct
*mdata
= bfd_mach_o_get_data (abfd
);
895 long nsyms
= bfd_mach_o_count_symbols (abfd
);
896 bfd_mach_o_symtab_command
*sym
= mdata
->symtab
;
904 /* Do not try to read symbols if there are none. */
909 if (!bfd_mach_o_read_symtab_symbols (abfd
))
912 (_("bfd_mach_o_canonicalize_symtab: unable to load symbols"));
916 BFD_ASSERT (sym
->symbols
!= NULL
);
918 for (j
= 0; j
< sym
->nsyms
; j
++)
919 alocation
[j
] = &sym
->symbols
[j
].symbol
;
926 /* Create synthetic symbols for indirect symbols. */
929 bfd_mach_o_get_synthetic_symtab (bfd
*abfd
,
930 long symcount ATTRIBUTE_UNUSED
,
931 asymbol
**syms ATTRIBUTE_UNUSED
,
932 long dynsymcount ATTRIBUTE_UNUSED
,
933 asymbol
**dynsyms ATTRIBUTE_UNUSED
,
936 bfd_mach_o_data_struct
*mdata
= bfd_mach_o_get_data (abfd
);
937 bfd_mach_o_dysymtab_command
*dysymtab
= mdata
->dysymtab
;
938 bfd_mach_o_symtab_command
*symtab
= mdata
->symtab
;
942 unsigned long count
, i
, j
, n
;
946 const char stub
[] = "$stub";
950 /* Stop now if no symbols or no indirect symbols. */
951 if (dysymtab
== NULL
|| dysymtab
->nindirectsyms
== 0
952 || symtab
== NULL
|| symtab
->symbols
== NULL
)
955 /* We need to allocate a bfd symbol for every indirect symbol and to
956 allocate the memory for its name. */
957 count
= dysymtab
->nindirectsyms
;
958 size
= count
* sizeof (asymbol
) + 1;
960 for (j
= 0; j
< count
; j
++)
963 unsigned int isym
= dysymtab
->indirect_syms
[j
];
965 /* Some indirect symbols are anonymous. */
966 if (isym
< symtab
->nsyms
&& (strng
= symtab
->symbols
[isym
].symbol
.name
))
967 /* PR 17512: file: f5b8eeba. */
968 size
+= strnlen (strng
, symtab
->strsize
- (strng
- symtab
->strtab
)) + sizeof (stub
);
971 s_start
= bfd_malloc (size
);
972 s
= *ret
= (asymbol
*) s_start
;
975 names
= (char *) (s
+ count
);
978 s_end
= s_start
+ size
;
981 for (i
= 0; i
< mdata
->nsects
; i
++)
983 bfd_mach_o_section
*sec
= mdata
->sections
[i
];
984 unsigned int first
, last
;
986 unsigned int entry_size
;
988 switch (sec
->flags
& BFD_MACH_O_SECTION_TYPE_MASK
)
990 case BFD_MACH_O_S_NON_LAZY_SYMBOL_POINTERS
:
991 case BFD_MACH_O_S_LAZY_SYMBOL_POINTERS
:
992 case BFD_MACH_O_S_SYMBOL_STUBS
:
993 /* Only these sections have indirect symbols. */
994 first
= sec
->reserved1
;
995 last
= first
+ bfd_mach_o_section_get_nbr_indirect (abfd
, sec
);
997 entry_size
= bfd_mach_o_section_get_entry_size (abfd
, sec
);
999 /* PR 17512: file: 08e15eec. */
1000 if (first
>= count
|| last
>= count
|| first
> last
)
1003 for (j
= first
; j
< last
; j
++)
1005 unsigned int isym
= dysymtab
->indirect_syms
[j
];
1007 /* PR 17512: file: 04d64d9b. */
1008 if (((char *) s
) + sizeof (* s
) > s_end
)
1011 s
->flags
= BSF_GLOBAL
| BSF_SYNTHETIC
;
1012 s
->section
= sec
->bfdsection
;
1013 s
->value
= addr
- sec
->addr
;
1016 if (isym
< symtab
->nsyms
1017 && symtab
->symbols
[isym
].symbol
.name
)
1019 const char *sym
= symtab
->symbols
[isym
].symbol
.name
;
1024 /* PR 17512: file: 47dfd4d2. */
1025 if (names
+ len
>= s_end
)
1027 memcpy (names
, sym
, len
);
1029 /* PR 17512: file: 18f340a4. */
1030 if (names
+ sizeof (stub
) >= s_end
)
1032 memcpy (names
, stub
, sizeof (stub
));
1033 names
+= sizeof (stub
);
1057 bfd_mach_o_get_symbol_info (bfd
*abfd ATTRIBUTE_UNUSED
,
1061 bfd_symbol_info (symbol
, ret
);
1065 bfd_mach_o_print_symbol (bfd
*abfd
,
1068 bfd_print_symbol_type how
)
1070 FILE *file
= (FILE *) afile
;
1072 bfd_mach_o_asymbol
*asym
= (bfd_mach_o_asymbol
*)symbol
;
1076 case bfd_print_symbol_name
:
1077 fprintf (file
, "%s", symbol
->name
);
1080 bfd_print_symbol_vandf (abfd
, (void *) file
, symbol
);
1081 if (asym
->n_type
& BFD_MACH_O_N_STAB
)
1082 name
= bfd_get_stab_name (asym
->n_type
);
1084 switch (asym
->n_type
& BFD_MACH_O_N_TYPE
)
1086 case BFD_MACH_O_N_UNDF
:
1087 if (symbol
->value
== 0)
1092 case BFD_MACH_O_N_ABS
:
1095 case BFD_MACH_O_N_INDR
:
1098 case BFD_MACH_O_N_PBUD
:
1101 case BFD_MACH_O_N_SECT
:
1110 fprintf (file
, " %02x %-6s %02x %04x",
1111 asym
->n_type
, name
, asym
->n_sect
, asym
->n_desc
);
1112 if ((asym
->n_type
& BFD_MACH_O_N_STAB
) == 0
1113 && (asym
->n_type
& BFD_MACH_O_N_TYPE
) == BFD_MACH_O_N_SECT
)
1114 fprintf (file
, " [%s]", symbol
->section
->name
);
1115 fprintf (file
, " %s", symbol
->name
);
1120 bfd_mach_o_convert_architecture (bfd_mach_o_cpu_type mtype
,
1121 bfd_mach_o_cpu_subtype msubtype
,
1122 enum bfd_architecture
*type
,
1123 unsigned long *subtype
)
1125 *subtype
= bfd_arch_unknown
;
1129 case BFD_MACH_O_CPU_TYPE_VAX
:
1130 *type
= bfd_arch_vax
;
1132 case BFD_MACH_O_CPU_TYPE_MC680x0
:
1133 *type
= bfd_arch_m68k
;
1135 case BFD_MACH_O_CPU_TYPE_I386
:
1136 *type
= bfd_arch_i386
;
1137 *subtype
= bfd_mach_i386_i386
;
1139 case BFD_MACH_O_CPU_TYPE_X86_64
:
1140 *type
= bfd_arch_i386
;
1141 *subtype
= bfd_mach_x86_64
;
1143 case BFD_MACH_O_CPU_TYPE_MIPS
:
1144 *type
= bfd_arch_mips
;
1146 case BFD_MACH_O_CPU_TYPE_MC98000
:
1147 *type
= bfd_arch_m98k
;
1149 case BFD_MACH_O_CPU_TYPE_HPPA
:
1150 *type
= bfd_arch_hppa
;
1152 case BFD_MACH_O_CPU_TYPE_ARM
:
1153 *type
= bfd_arch_arm
;
1156 case BFD_MACH_O_CPU_SUBTYPE_ARM_V4T
:
1157 *subtype
= bfd_mach_arm_4T
;
1159 case BFD_MACH_O_CPU_SUBTYPE_ARM_V6
:
1160 *subtype
= bfd_mach_arm_4T
; /* Best fit ? */
1162 case BFD_MACH_O_CPU_SUBTYPE_ARM_V5TEJ
:
1163 *subtype
= bfd_mach_arm_5TE
;
1165 case BFD_MACH_O_CPU_SUBTYPE_ARM_XSCALE
:
1166 *subtype
= bfd_mach_arm_XScale
;
1168 case BFD_MACH_O_CPU_SUBTYPE_ARM_V7
:
1169 *subtype
= bfd_mach_arm_5TE
; /* Best fit ? */
1171 case BFD_MACH_O_CPU_SUBTYPE_ARM_ALL
:
1176 case BFD_MACH_O_CPU_TYPE_SPARC
:
1177 *type
= bfd_arch_sparc
;
1178 *subtype
= bfd_mach_sparc
;
1180 case BFD_MACH_O_CPU_TYPE_ALPHA
:
1181 *type
= bfd_arch_alpha
;
1183 case BFD_MACH_O_CPU_TYPE_POWERPC
:
1184 *type
= bfd_arch_powerpc
;
1185 *subtype
= bfd_mach_ppc
;
1187 case BFD_MACH_O_CPU_TYPE_POWERPC_64
:
1188 *type
= bfd_arch_powerpc
;
1189 *subtype
= bfd_mach_ppc64
;
1191 case BFD_MACH_O_CPU_TYPE_ARM64
:
1192 *type
= bfd_arch_aarch64
;
1193 *subtype
= bfd_mach_aarch64
;
1196 *type
= bfd_arch_unknown
;
1201 /* Write n NUL bytes to ABFD so that LEN + n is a multiple of 4. Return the
1202 number of bytes written or -1 in case of error. */
1205 bfd_mach_o_pad4 (bfd
*abfd
, size_t len
)
1209 char pad
[4] = {0,0,0,0};
1210 unsigned int padlen
= 4 - (len
% 4);
1212 if (bfd_bwrite (pad
, padlen
, abfd
) != padlen
)
1221 /* Likewise, but for a command. */
1224 bfd_mach_o_pad_command (bfd
*abfd
, size_t len
)
1226 size_t align
= bfd_mach_o_wide_p (abfd
) ? 8 : 4;
1228 if (len
% align
!= 0)
1231 size_t padlen
= align
- (len
% align
);
1233 if (bfd_bwrite (pad
, padlen
, abfd
) != padlen
)
1243 bfd_mach_o_write_header (bfd
*abfd
, bfd_mach_o_header
*header
)
1245 struct mach_o_header_external raw
;
1248 size
= mach_o_wide_p (header
) ?
1249 BFD_MACH_O_HEADER_64_SIZE
: BFD_MACH_O_HEADER_SIZE
;
1251 bfd_h_put_32 (abfd
, header
->magic
, raw
.magic
);
1252 bfd_h_put_32 (abfd
, header
->cputype
, raw
.cputype
);
1253 bfd_h_put_32 (abfd
, header
->cpusubtype
, raw
.cpusubtype
);
1254 bfd_h_put_32 (abfd
, header
->filetype
, raw
.filetype
);
1255 bfd_h_put_32 (abfd
, header
->ncmds
, raw
.ncmds
);
1256 bfd_h_put_32 (abfd
, header
->sizeofcmds
, raw
.sizeofcmds
);
1257 bfd_h_put_32 (abfd
, header
->flags
, raw
.flags
);
1259 if (mach_o_wide_p (header
))
1260 bfd_h_put_32 (abfd
, header
->reserved
, raw
.reserved
);
1262 if (bfd_seek (abfd
, 0, SEEK_SET
) != 0
1263 || bfd_bwrite (&raw
, size
, abfd
) != size
)
1270 bfd_mach_o_write_thread (bfd
*abfd
, bfd_mach_o_load_command
*command
)
1272 bfd_mach_o_thread_command
*cmd
= &command
->command
.thread
;
1274 struct mach_o_thread_command_external raw
;
1277 BFD_ASSERT ((command
->type
== BFD_MACH_O_LC_THREAD
)
1278 || (command
->type
== BFD_MACH_O_LC_UNIXTHREAD
));
1280 offset
= BFD_MACH_O_LC_SIZE
;
1281 for (i
= 0; i
< cmd
->nflavours
; i
++)
1283 BFD_ASSERT ((cmd
->flavours
[i
].size
% 4) == 0);
1284 BFD_ASSERT (cmd
->flavours
[i
].offset
1285 == command
->offset
+ offset
+ BFD_MACH_O_LC_SIZE
);
1287 bfd_h_put_32 (abfd
, cmd
->flavours
[i
].flavour
, raw
.flavour
);
1288 bfd_h_put_32 (abfd
, (cmd
->flavours
[i
].size
/ 4), raw
.count
);
1290 if (bfd_seek (abfd
, command
->offset
+ offset
, SEEK_SET
) != 0
1291 || bfd_bwrite (&raw
, sizeof (raw
), abfd
) != sizeof (raw
))
1294 offset
+= cmd
->flavours
[i
].size
+ sizeof (raw
);
1301 bfd_mach_o_write_dylinker (bfd
*abfd
, bfd_mach_o_load_command
*command
)
1303 bfd_mach_o_dylinker_command
*cmd
= &command
->command
.dylinker
;
1304 struct mach_o_str_command_external raw
;
1307 bfd_h_put_32 (abfd
, cmd
->name_offset
, raw
.str
);
1309 if (bfd_seek (abfd
, command
->offset
+ BFD_MACH_O_LC_SIZE
, SEEK_SET
) != 0
1310 || bfd_bwrite (&raw
, sizeof (raw
), abfd
) != sizeof (raw
))
1313 namelen
= strlen (cmd
->name_str
) + 1;
1314 if (bfd_bwrite (cmd
->name_str
, namelen
, abfd
) != namelen
)
1317 if (bfd_mach_o_pad_command (abfd
, namelen
) < 0)
1324 bfd_mach_o_write_dylib (bfd
*abfd
, bfd_mach_o_load_command
*command
)
1326 bfd_mach_o_dylib_command
*cmd
= &command
->command
.dylib
;
1327 struct mach_o_dylib_command_external raw
;
1330 bfd_h_put_32 (abfd
, cmd
->name_offset
, raw
.name
);
1331 bfd_h_put_32 (abfd
, cmd
->timestamp
, raw
.timestamp
);
1332 bfd_h_put_32 (abfd
, cmd
->current_version
, raw
.current_version
);
1333 bfd_h_put_32 (abfd
, cmd
->compatibility_version
, raw
.compatibility_version
);
1335 if (bfd_seek (abfd
, command
->offset
+ BFD_MACH_O_LC_SIZE
, SEEK_SET
) != 0
1336 || bfd_bwrite (&raw
, sizeof (raw
), abfd
) != sizeof (raw
))
1339 namelen
= strlen (cmd
->name_str
) + 1;
1340 if (bfd_bwrite (cmd
->name_str
, namelen
, abfd
) != namelen
)
1343 if (bfd_mach_o_pad_command (abfd
, namelen
) < 0)
1350 bfd_mach_o_write_main (bfd
*abfd
, bfd_mach_o_load_command
*command
)
1352 bfd_mach_o_main_command
*cmd
= &command
->command
.main
;
1353 struct mach_o_entry_point_command_external raw
;
1355 bfd_h_put_64 (abfd
, cmd
->entryoff
, raw
.entryoff
);
1356 bfd_h_put_64 (abfd
, cmd
->stacksize
, raw
.stacksize
);
1358 if (bfd_seek (abfd
, command
->offset
+ BFD_MACH_O_LC_SIZE
, SEEK_SET
) != 0
1359 || bfd_bwrite (&raw
, sizeof (raw
), abfd
) != sizeof (raw
))
1366 bfd_mach_o_write_dyld_info (bfd
*abfd
, bfd_mach_o_load_command
*command
)
1368 bfd_mach_o_dyld_info_command
*cmd
= &command
->command
.dyld_info
;
1369 struct mach_o_dyld_info_command_external raw
;
1371 bfd_h_put_32 (abfd
, cmd
->rebase_off
, raw
.rebase_off
);
1372 bfd_h_put_32 (abfd
, cmd
->rebase_size
, raw
.rebase_size
);
1373 bfd_h_put_32 (abfd
, cmd
->bind_off
, raw
.bind_off
);
1374 bfd_h_put_32 (abfd
, cmd
->bind_size
, raw
.bind_size
);
1375 bfd_h_put_32 (abfd
, cmd
->weak_bind_off
, raw
.weak_bind_off
);
1376 bfd_h_put_32 (abfd
, cmd
->weak_bind_size
, raw
.weak_bind_size
);
1377 bfd_h_put_32 (abfd
, cmd
->lazy_bind_off
, raw
.lazy_bind_off
);
1378 bfd_h_put_32 (abfd
, cmd
->lazy_bind_size
, raw
.lazy_bind_size
);
1379 bfd_h_put_32 (abfd
, cmd
->export_off
, raw
.export_off
);
1380 bfd_h_put_32 (abfd
, cmd
->export_size
, raw
.export_size
);
1382 if (bfd_seek (abfd
, command
->offset
+ BFD_MACH_O_LC_SIZE
, SEEK_SET
) != 0
1383 || bfd_bwrite (&raw
, sizeof (raw
), abfd
) != sizeof (raw
))
1386 if (cmd
->rebase_size
!= 0)
1387 if (bfd_seek (abfd
, cmd
->rebase_off
, SEEK_SET
) != 0
1388 || (bfd_bwrite (cmd
->rebase_content
, cmd
->rebase_size
, abfd
) !=
1392 if (cmd
->bind_size
!= 0)
1393 if (bfd_seek (abfd
, cmd
->bind_off
, SEEK_SET
) != 0
1394 || (bfd_bwrite (cmd
->bind_content
, cmd
->bind_size
, abfd
) !=
1398 if (cmd
->weak_bind_size
!= 0)
1399 if (bfd_seek (abfd
, cmd
->weak_bind_off
, SEEK_SET
) != 0
1400 || (bfd_bwrite (cmd
->weak_bind_content
, cmd
->weak_bind_size
, abfd
) !=
1401 cmd
->weak_bind_size
))
1404 if (cmd
->lazy_bind_size
!= 0)
1405 if (bfd_seek (abfd
, cmd
->lazy_bind_off
, SEEK_SET
) != 0
1406 || (bfd_bwrite (cmd
->lazy_bind_content
, cmd
->lazy_bind_size
, abfd
) !=
1407 cmd
->lazy_bind_size
))
1410 if (cmd
->export_size
!= 0)
1411 if (bfd_seek (abfd
, cmd
->export_off
, SEEK_SET
) != 0
1412 || (bfd_bwrite (cmd
->export_content
, cmd
->export_size
, abfd
) !=
1420 bfd_mach_o_get_reloc_upper_bound (bfd
*abfd ATTRIBUTE_UNUSED
,
1423 #if SIZEOF_LONG == SIZEOF_INT
1424 if (asect
->reloc_count
>= LONG_MAX
/ sizeof (arelent
*))
1426 bfd_set_error (bfd_error_file_too_big
);
1430 return (asect
->reloc_count
+ 1L) * sizeof (arelent
*);
1433 /* In addition to the need to byte-swap the symbol number, the bit positions
1434 of the fields in the relocation information vary per target endian-ness. */
1437 bfd_mach_o_swap_in_non_scattered_reloc (bfd
*abfd
, bfd_mach_o_reloc_info
*rel
,
1438 unsigned char *fields
)
1440 unsigned char info
= fields
[3];
1442 if (bfd_big_endian (abfd
))
1444 rel
->r_value
= (fields
[0] << 16) | (fields
[1] << 8) | fields
[2];
1445 rel
->r_type
= (info
>> BFD_MACH_O_BE_TYPE_SHIFT
) & BFD_MACH_O_TYPE_MASK
;
1446 rel
->r_pcrel
= (info
& BFD_MACH_O_BE_PCREL
) ? 1 : 0;
1447 rel
->r_length
= (info
>> BFD_MACH_O_BE_LENGTH_SHIFT
)
1448 & BFD_MACH_O_LENGTH_MASK
;
1449 rel
->r_extern
= (info
& BFD_MACH_O_BE_EXTERN
) ? 1 : 0;
1453 rel
->r_value
= (fields
[2] << 16) | (fields
[1] << 8) | fields
[0];
1454 rel
->r_type
= (info
>> BFD_MACH_O_LE_TYPE_SHIFT
) & BFD_MACH_O_TYPE_MASK
;
1455 rel
->r_pcrel
= (info
& BFD_MACH_O_LE_PCREL
) ? 1 : 0;
1456 rel
->r_length
= (info
>> BFD_MACH_O_LE_LENGTH_SHIFT
)
1457 & BFD_MACH_O_LENGTH_MASK
;
1458 rel
->r_extern
= (info
& BFD_MACH_O_LE_EXTERN
) ? 1 : 0;
1462 /* Set syms_ptr_ptr and addend of RES. */
1465 bfd_mach_o_canonicalize_non_scattered_reloc (bfd
*abfd
,
1466 bfd_mach_o_reloc_info
*reloc
,
1467 arelent
*res
, asymbol
**syms
)
1469 bfd_mach_o_data_struct
*mdata
= bfd_mach_o_get_data (abfd
);
1473 /* Non-scattered relocation. */
1474 reloc
->r_scattered
= 0;
1477 num
= reloc
->r_value
;
1479 if (reloc
->r_extern
)
1481 /* PR 17512: file: 8396-1185-0.004. */
1482 if (num
>= (unsigned) bfd_mach_o_count_symbols (abfd
))
1483 sym
= bfd_und_section_ptr
->symbol_ptr_ptr
;
1484 else if (syms
== NULL
)
1485 sym
= bfd_und_section_ptr
->symbol_ptr_ptr
;
1487 /* An external symbol number. */
1490 else if (num
== 0x00ffffff || num
== 0)
1492 /* The 'symnum' in a non-scattered PAIR is 0x00ffffff. But as this
1493 is generic code, we don't know wether this is really a PAIR.
1494 This value is almost certainly not a valid section number, hence
1495 this specific case to avoid an assertion failure.
1496 Target specific swap_reloc_in routine should adjust that. */
1497 sym
= bfd_abs_section_ptr
->symbol_ptr_ptr
;
1501 /* PR 17512: file: 006-2964-0.004. */
1502 if (num
> mdata
->nsects
)
1504 _bfd_error_handler (_("\
1505 malformed mach-o reloc: section index is greater than the number of sections"));
1509 /* A section number. */
1510 sym
= mdata
->sections
[num
- 1]->bfdsection
->symbol_ptr_ptr
;
1511 /* For a symbol defined in section S, the addend (stored in the
1512 binary) contains the address of the section. To comply with
1513 bfd convention, subtract the section address.
1514 Use the address from the header, so that the user can modify
1515 the vma of the section. */
1516 res
->addend
= -mdata
->sections
[num
- 1]->addr
;
1519 /* Note: Pairs for PPC LO/HI/HA are not scattered, but contain the offset
1520 in the lower 16bits of the address value. So we have to find the
1521 'symbol' from the preceding reloc. We do this even though the
1522 section symbol is probably not needed here, because NULL symbol
1523 values cause an assert in generic BFD code. This must be done in
1524 the PPC swap_reloc_in routine. */
1525 res
->sym_ptr_ptr
= sym
;
1530 /* Do most of the work for canonicalize_relocs on RAW: create internal
1531 representation RELOC and set most fields of RES using symbol table SYMS.
1532 Each target still has to set the howto of RES and possibly adjust other
1534 Previously the Mach-O hook point was simply swap_in, but some targets
1535 (like arm64) don't follow the generic rules (symnum is a value for the
1536 non-scattered relocation ADDEND). */
1539 bfd_mach_o_pre_canonicalize_one_reloc (bfd
*abfd
,
1540 struct mach_o_reloc_info_external
*raw
,
1541 bfd_mach_o_reloc_info
*reloc
,
1542 arelent
*res
, asymbol
**syms
)
1544 bfd_mach_o_data_struct
*mdata
= bfd_mach_o_get_data (abfd
);
1547 addr
= bfd_get_32 (abfd
, raw
->r_address
);
1548 res
->sym_ptr_ptr
= NULL
;
1551 if (addr
& BFD_MACH_O_SR_SCATTERED
)
1554 bfd_vma symnum
= bfd_get_32 (abfd
, raw
->r_symbolnum
);
1556 /* Scattered relocation, can't be extern. */
1557 reloc
->r_scattered
= 1;
1558 reloc
->r_extern
= 0;
1560 /* Extract section and offset from r_value (symnum). */
1561 reloc
->r_value
= symnum
;
1562 /* FIXME: This breaks when a symbol in a reloc exactly follows the
1563 end of the data for the section (e.g. in a calculation of section
1564 data length). At present, the symbol will end up associated with
1565 the following section or, if it falls within alignment padding, as
1566 null - which will assert later. */
1567 for (j
= 0; j
< mdata
->nsects
; j
++)
1569 bfd_mach_o_section
*sect
= mdata
->sections
[j
];
1570 if (symnum
>= sect
->addr
&& symnum
< sect
->addr
+ sect
->size
)
1572 res
->sym_ptr_ptr
= sect
->bfdsection
->symbol_ptr_ptr
;
1573 res
->addend
= symnum
- sect
->addr
;
1578 /* Extract the info and address fields from r_address. */
1579 reloc
->r_type
= BFD_MACH_O_GET_SR_TYPE (addr
);
1580 reloc
->r_length
= BFD_MACH_O_GET_SR_LENGTH (addr
);
1581 reloc
->r_pcrel
= addr
& BFD_MACH_O_SR_PCREL
;
1582 reloc
->r_address
= BFD_MACH_O_GET_SR_TYPE (addr
);
1583 res
->address
= BFD_MACH_O_GET_SR_ADDRESS (addr
);
1587 /* Non-scattered relocation. */
1588 reloc
->r_scattered
= 0;
1589 reloc
->r_address
= addr
;
1590 res
->address
= addr
;
1592 /* The value and info fields have to be extracted dependent on target
1594 bfd_mach_o_swap_in_non_scattered_reloc (abfd
, reloc
, raw
->r_symbolnum
);
1596 if (!bfd_mach_o_canonicalize_non_scattered_reloc (abfd
, reloc
,
1601 /* We have set up a reloc with all the information present, so the swapper
1602 can modify address, value and addend fields, if necessary, to convey
1603 information in the generic BFD reloc that is mach-o specific. */
1609 bfd_mach_o_canonicalize_relocs (bfd
*abfd
, unsigned long filepos
,
1610 unsigned long count
,
1611 arelent
*res
, asymbol
**syms
)
1613 bfd_mach_o_backend_data
*bed
= bfd_mach_o_get_backend_data (abfd
);
1615 struct mach_o_reloc_info_external
*native_relocs
= NULL
;
1618 /* Allocate and read relocs. */
1619 if (_bfd_mul_overflow (count
, BFD_MACH_O_RELENT_SIZE
, &native_size
))
1620 /* PR 17512: file: 09477b57. */
1623 if (bfd_seek (abfd
, filepos
, SEEK_SET
) != 0)
1625 native_relocs
= (struct mach_o_reloc_info_external
*)
1626 _bfd_malloc_and_read (abfd
, native_size
, native_size
);
1627 if (native_relocs
== NULL
)
1630 for (i
= 0; i
< count
; i
++)
1632 if (!(*bed
->_bfd_mach_o_canonicalize_one_reloc
)(abfd
, &native_relocs
[i
],
1633 &res
[i
], syms
, res
))
1636 free (native_relocs
);
1640 free (native_relocs
);
1641 if (bfd_get_error () == bfd_error_no_error
)
1642 bfd_set_error (bfd_error_invalid_operation
);
1647 bfd_mach_o_canonicalize_reloc (bfd
*abfd
, asection
*asect
,
1648 arelent
**rels
, asymbol
**syms
)
1650 bfd_mach_o_backend_data
*bed
= bfd_mach_o_get_backend_data (abfd
);
1654 if (asect
->reloc_count
== 0)
1657 /* No need to go further if we don't know how to read relocs. */
1658 if (bed
->_bfd_mach_o_canonicalize_one_reloc
== NULL
)
1661 if (asect
->relocation
== NULL
)
1665 if (_bfd_mul_overflow (asect
->reloc_count
, sizeof (arelent
), &amt
))
1667 res
= bfd_malloc (amt
);
1671 if (bfd_mach_o_canonicalize_relocs (abfd
, asect
->rel_filepos
,
1672 asect
->reloc_count
, res
, syms
) < 0)
1677 asect
->relocation
= res
;
1680 res
= asect
->relocation
;
1681 for (i
= 0; i
< asect
->reloc_count
; i
++)
1689 bfd_mach_o_get_dynamic_reloc_upper_bound (bfd
*abfd
)
1691 bfd_mach_o_data_struct
*mdata
= bfd_mach_o_get_data (abfd
);
1693 if (mdata
->dysymtab
== NULL
)
1695 return (mdata
->dysymtab
->nextrel
+ mdata
->dysymtab
->nlocrel
+ 1)
1696 * sizeof (arelent
*);
1700 bfd_mach_o_canonicalize_dynamic_reloc (bfd
*abfd
, arelent
**rels
,
1701 struct bfd_symbol
**syms
)
1703 bfd_mach_o_data_struct
*mdata
= bfd_mach_o_get_data (abfd
);
1704 bfd_mach_o_dysymtab_command
*dysymtab
= mdata
->dysymtab
;
1705 bfd_mach_o_backend_data
*bed
= bfd_mach_o_get_backend_data (abfd
);
1709 if (dysymtab
== NULL
)
1711 if (dysymtab
->nextrel
== 0 && dysymtab
->nlocrel
== 0)
1714 /* No need to go further if we don't know how to read relocs. */
1715 if (bed
->_bfd_mach_o_canonicalize_one_reloc
== NULL
)
1718 if (mdata
->dyn_reloc_cache
== NULL
)
1720 ufile_ptr filesize
= bfd_get_file_size (abfd
);
1725 if (dysymtab
->extreloff
> filesize
1726 || dysymtab
->nextrel
> ((filesize
- dysymtab
->extreloff
)
1727 / BFD_MACH_O_RELENT_SIZE
)
1728 || dysymtab
->locreloff
> filesize
1729 || dysymtab
->nlocrel
> ((filesize
- dysymtab
->locreloff
)
1730 / BFD_MACH_O_RELENT_SIZE
))
1732 bfd_set_error (bfd_error_file_truncated
);
1736 if (_bfd_mul_overflow (dysymtab
->nextrel
+ dysymtab
->nlocrel
,
1737 sizeof (arelent
), &amt
))
1739 bfd_set_error (bfd_error_file_too_big
);
1743 res
= bfd_malloc (amt
);
1747 if (bfd_mach_o_canonicalize_relocs (abfd
, dysymtab
->extreloff
,
1748 dysymtab
->nextrel
, res
, syms
) < 0)
1754 if (bfd_mach_o_canonicalize_relocs (abfd
, dysymtab
->locreloff
,
1756 res
+ dysymtab
->nextrel
, syms
) < 0)
1762 mdata
->dyn_reloc_cache
= res
;
1765 res
= mdata
->dyn_reloc_cache
;
1766 for (i
= 0; i
< dysymtab
->nextrel
+ dysymtab
->nlocrel
; i
++)
1772 /* In addition to the need to byte-swap the symbol number, the bit positions
1773 of the fields in the relocation information vary per target endian-ness. */
1776 bfd_mach_o_swap_out_non_scattered_reloc (bfd
*abfd
, unsigned char *fields
,
1777 bfd_mach_o_reloc_info
*rel
)
1779 unsigned char info
= 0;
1781 BFD_ASSERT (rel
->r_type
<= 15);
1782 BFD_ASSERT (rel
->r_length
<= 3);
1784 if (bfd_big_endian (abfd
))
1786 fields
[0] = (rel
->r_value
>> 16) & 0xff;
1787 fields
[1] = (rel
->r_value
>> 8) & 0xff;
1788 fields
[2] = rel
->r_value
& 0xff;
1789 info
|= rel
->r_type
<< BFD_MACH_O_BE_TYPE_SHIFT
;
1790 info
|= rel
->r_pcrel
? BFD_MACH_O_BE_PCREL
: 0;
1791 info
|= rel
->r_length
<< BFD_MACH_O_BE_LENGTH_SHIFT
;
1792 info
|= rel
->r_extern
? BFD_MACH_O_BE_EXTERN
: 0;
1796 fields
[2] = (rel
->r_value
>> 16) & 0xff;
1797 fields
[1] = (rel
->r_value
>> 8) & 0xff;
1798 fields
[0] = rel
->r_value
& 0xff;
1799 info
|= rel
->r_type
<< BFD_MACH_O_LE_TYPE_SHIFT
;
1800 info
|= rel
->r_pcrel
? BFD_MACH_O_LE_PCREL
: 0;
1801 info
|= rel
->r_length
<< BFD_MACH_O_LE_LENGTH_SHIFT
;
1802 info
|= rel
->r_extern
? BFD_MACH_O_LE_EXTERN
: 0;
1808 bfd_mach_o_write_relocs (bfd
*abfd
, bfd_mach_o_section
*section
)
1813 bfd_mach_o_backend_data
*bed
= bfd_mach_o_get_backend_data (abfd
);
1815 sec
= section
->bfdsection
;
1816 if (sec
->reloc_count
== 0)
1819 if (bed
->_bfd_mach_o_swap_reloc_out
== NULL
)
1822 if (bfd_seek (abfd
, section
->reloff
, SEEK_SET
) != 0)
1825 /* Convert and write. */
1826 entries
= section
->bfdsection
->orelocation
;
1827 for (i
= 0; i
< section
->nreloc
; i
++)
1829 arelent
*rel
= entries
[i
];
1830 struct mach_o_reloc_info_external raw
;
1831 bfd_mach_o_reloc_info info
, *pinfo
= &info
;
1833 /* Convert relocation to an intermediate representation. */
1834 if (!(*bed
->_bfd_mach_o_swap_reloc_out
) (rel
, pinfo
))
1837 /* Lower the relocation info. */
1838 if (pinfo
->r_scattered
)
1842 v
= BFD_MACH_O_SR_SCATTERED
1843 | (pinfo
->r_pcrel
? BFD_MACH_O_SR_PCREL
: 0)
1844 | BFD_MACH_O_SET_SR_LENGTH (pinfo
->r_length
)
1845 | BFD_MACH_O_SET_SR_TYPE (pinfo
->r_type
)
1846 | BFD_MACH_O_SET_SR_ADDRESS (pinfo
->r_address
);
1847 /* Note: scattered relocs have field in reverse order... */
1848 bfd_put_32 (abfd
, v
, raw
.r_address
);
1849 bfd_put_32 (abfd
, pinfo
->r_value
, raw
.r_symbolnum
);
1853 bfd_put_32 (abfd
, pinfo
->r_address
, raw
.r_address
);
1854 bfd_mach_o_swap_out_non_scattered_reloc (abfd
, raw
.r_symbolnum
,
1858 if (bfd_bwrite (&raw
, BFD_MACH_O_RELENT_SIZE
, abfd
)
1859 != BFD_MACH_O_RELENT_SIZE
)
1866 bfd_mach_o_write_section_32 (bfd
*abfd
, bfd_mach_o_section
*section
)
1868 struct mach_o_section_32_external raw
;
1870 memcpy (raw
.sectname
, section
->sectname
, 16);
1871 memcpy (raw
.segname
, section
->segname
, 16);
1872 bfd_h_put_32 (abfd
, section
->addr
, raw
.addr
);
1873 bfd_h_put_32 (abfd
, section
->size
, raw
.size
);
1874 bfd_h_put_32 (abfd
, section
->offset
, raw
.offset
);
1875 bfd_h_put_32 (abfd
, section
->align
, raw
.align
);
1876 bfd_h_put_32 (abfd
, section
->reloff
, raw
.reloff
);
1877 bfd_h_put_32 (abfd
, section
->nreloc
, raw
.nreloc
);
1878 bfd_h_put_32 (abfd
, section
->flags
, raw
.flags
);
1879 bfd_h_put_32 (abfd
, section
->reserved1
, raw
.reserved1
);
1880 bfd_h_put_32 (abfd
, section
->reserved2
, raw
.reserved2
);
1882 if (bfd_bwrite (&raw
, BFD_MACH_O_SECTION_SIZE
, abfd
)
1883 != BFD_MACH_O_SECTION_SIZE
)
1890 bfd_mach_o_write_section_64 (bfd
*abfd
, bfd_mach_o_section
*section
)
1892 struct mach_o_section_64_external raw
;
1894 memcpy (raw
.sectname
, section
->sectname
, 16);
1895 memcpy (raw
.segname
, section
->segname
, 16);
1896 bfd_h_put_64 (abfd
, section
->addr
, raw
.addr
);
1897 bfd_h_put_64 (abfd
, section
->size
, raw
.size
);
1898 bfd_h_put_32 (abfd
, section
->offset
, raw
.offset
);
1899 bfd_h_put_32 (abfd
, section
->align
, raw
.align
);
1900 bfd_h_put_32 (abfd
, section
->reloff
, raw
.reloff
);
1901 bfd_h_put_32 (abfd
, section
->nreloc
, raw
.nreloc
);
1902 bfd_h_put_32 (abfd
, section
->flags
, raw
.flags
);
1903 bfd_h_put_32 (abfd
, section
->reserved1
, raw
.reserved1
);
1904 bfd_h_put_32 (abfd
, section
->reserved2
, raw
.reserved2
);
1905 bfd_h_put_32 (abfd
, section
->reserved3
, raw
.reserved3
);
1907 if (bfd_bwrite (&raw
, BFD_MACH_O_SECTION_64_SIZE
, abfd
)
1908 != BFD_MACH_O_SECTION_64_SIZE
)
1915 bfd_mach_o_write_segment_32 (bfd
*abfd
, bfd_mach_o_load_command
*command
)
1917 struct mach_o_segment_command_32_external raw
;
1918 bfd_mach_o_segment_command
*seg
= &command
->command
.segment
;
1919 bfd_mach_o_section
*sec
;
1921 BFD_ASSERT (command
->type
== BFD_MACH_O_LC_SEGMENT
);
1923 for (sec
= seg
->sect_head
; sec
!= NULL
; sec
= sec
->next
)
1924 if (!bfd_mach_o_write_relocs (abfd
, sec
))
1927 memcpy (raw
.segname
, seg
->segname
, 16);
1928 bfd_h_put_32 (abfd
, seg
->vmaddr
, raw
.vmaddr
);
1929 bfd_h_put_32 (abfd
, seg
->vmsize
, raw
.vmsize
);
1930 bfd_h_put_32 (abfd
, seg
->fileoff
, raw
.fileoff
);
1931 bfd_h_put_32 (abfd
, seg
->filesize
, raw
.filesize
);
1932 bfd_h_put_32 (abfd
, seg
->maxprot
, raw
.maxprot
);
1933 bfd_h_put_32 (abfd
, seg
->initprot
, raw
.initprot
);
1934 bfd_h_put_32 (abfd
, seg
->nsects
, raw
.nsects
);
1935 bfd_h_put_32 (abfd
, seg
->flags
, raw
.flags
);
1937 if (bfd_seek (abfd
, command
->offset
+ BFD_MACH_O_LC_SIZE
, SEEK_SET
) != 0
1938 || bfd_bwrite (&raw
, sizeof (raw
), abfd
) != sizeof (raw
))
1941 for (sec
= seg
->sect_head
; sec
!= NULL
; sec
= sec
->next
)
1942 if (!bfd_mach_o_write_section_32 (abfd
, sec
))
1949 bfd_mach_o_write_segment_64 (bfd
*abfd
, bfd_mach_o_load_command
*command
)
1951 struct mach_o_segment_command_64_external raw
;
1952 bfd_mach_o_segment_command
*seg
= &command
->command
.segment
;
1953 bfd_mach_o_section
*sec
;
1955 BFD_ASSERT (command
->type
== BFD_MACH_O_LC_SEGMENT_64
);
1957 for (sec
= seg
->sect_head
; sec
!= NULL
; sec
= sec
->next
)
1958 if (!bfd_mach_o_write_relocs (abfd
, sec
))
1961 memcpy (raw
.segname
, seg
->segname
, 16);
1962 bfd_h_put_64 (abfd
, seg
->vmaddr
, raw
.vmaddr
);
1963 bfd_h_put_64 (abfd
, seg
->vmsize
, raw
.vmsize
);
1964 bfd_h_put_64 (abfd
, seg
->fileoff
, raw
.fileoff
);
1965 bfd_h_put_64 (abfd
, seg
->filesize
, raw
.filesize
);
1966 bfd_h_put_32 (abfd
, seg
->maxprot
, raw
.maxprot
);
1967 bfd_h_put_32 (abfd
, seg
->initprot
, raw
.initprot
);
1968 bfd_h_put_32 (abfd
, seg
->nsects
, raw
.nsects
);
1969 bfd_h_put_32 (abfd
, seg
->flags
, raw
.flags
);
1971 if (bfd_seek (abfd
, command
->offset
+ BFD_MACH_O_LC_SIZE
, SEEK_SET
) != 0
1972 || bfd_bwrite (&raw
, sizeof (raw
), abfd
) != sizeof (raw
))
1975 for (sec
= seg
->sect_head
; sec
!= NULL
; sec
= sec
->next
)
1976 if (!bfd_mach_o_write_section_64 (abfd
, sec
))
1983 bfd_mach_o_write_symtab_content (bfd
*abfd
, bfd_mach_o_symtab_command
*sym
)
1985 bfd_mach_o_data_struct
*mdata
= bfd_mach_o_get_data (abfd
);
1987 unsigned int wide
= bfd_mach_o_wide_p (abfd
);
1988 struct bfd_strtab_hash
*strtab
;
1989 asymbol
**symbols
= bfd_get_outsymbols (abfd
);
1992 /* Write the symbols first. */
1993 if (bfd_seek (abfd
, sym
->symoff
, SEEK_SET
) != 0)
1996 strtab
= _bfd_stringtab_init ();
2001 /* Although we don't strictly need to do this, for compatibility with
2002 Darwin system tools, actually output an empty string for the index
2004 _bfd_stringtab_add (strtab
, "", true, false);
2006 for (i
= 0; i
< sym
->nsyms
; i
++)
2008 bfd_size_type str_index
;
2009 bfd_mach_o_asymbol
*s
= (bfd_mach_o_asymbol
*)symbols
[i
];
2011 if (s
->symbol
.name
== 0 || s
->symbol
.name
[0] == '\0')
2012 /* An index of 0 always means the empty string. */
2016 str_index
= _bfd_stringtab_add (strtab
, s
->symbol
.name
, true, false);
2018 if (str_index
== (bfd_size_type
) -1)
2024 struct mach_o_nlist_64_external raw
;
2026 bfd_h_put_32 (abfd
, str_index
, raw
.n_strx
);
2027 bfd_h_put_8 (abfd
, s
->n_type
, raw
.n_type
);
2028 bfd_h_put_8 (abfd
, s
->n_sect
, raw
.n_sect
);
2029 bfd_h_put_16 (abfd
, s
->n_desc
, raw
.n_desc
);
2030 bfd_h_put_64 (abfd
, s
->symbol
.section
->vma
+ s
->symbol
.value
,
2033 if (bfd_bwrite (&raw
, sizeof (raw
), abfd
) != sizeof (raw
))
2038 struct mach_o_nlist_external raw
;
2040 bfd_h_put_32 (abfd
, str_index
, raw
.n_strx
);
2041 bfd_h_put_8 (abfd
, s
->n_type
, raw
.n_type
);
2042 bfd_h_put_8 (abfd
, s
->n_sect
, raw
.n_sect
);
2043 bfd_h_put_16 (abfd
, s
->n_desc
, raw
.n_desc
);
2044 bfd_h_put_32 (abfd
, s
->symbol
.section
->vma
+ s
->symbol
.value
,
2047 if (bfd_bwrite (&raw
, sizeof (raw
), abfd
) != sizeof (raw
))
2051 sym
->strsize
= _bfd_stringtab_size (strtab
);
2052 sym
->stroff
= mdata
->filelen
;
2053 mdata
->filelen
+= sym
->strsize
;
2055 if (bfd_seek (abfd
, sym
->stroff
, SEEK_SET
) != 0)
2058 if (!_bfd_stringtab_emit (abfd
, strtab
))
2061 /* Pad string table. */
2062 padlen
= bfd_mach_o_pad4 (abfd
, sym
->strsize
);
2065 mdata
->filelen
+= padlen
;
2066 sym
->strsize
+= padlen
;
2071 _bfd_stringtab_free (strtab
);
2077 bfd_mach_o_write_symtab (bfd
*abfd
, bfd_mach_o_load_command
*command
)
2079 bfd_mach_o_symtab_command
*sym
= &command
->command
.symtab
;
2080 struct mach_o_symtab_command_external raw
;
2082 BFD_ASSERT (command
->type
== BFD_MACH_O_LC_SYMTAB
);
2085 bfd_h_put_32 (abfd
, sym
->symoff
, raw
.symoff
);
2086 bfd_h_put_32 (abfd
, sym
->nsyms
, raw
.nsyms
);
2087 bfd_h_put_32 (abfd
, sym
->stroff
, raw
.stroff
);
2088 bfd_h_put_32 (abfd
, sym
->strsize
, raw
.strsize
);
2090 if (bfd_seek (abfd
, command
->offset
+ BFD_MACH_O_LC_SIZE
, SEEK_SET
) != 0
2091 || bfd_bwrite (&raw
, sizeof (raw
), abfd
) != sizeof (raw
))
2097 /* Count the number of indirect symbols in the image.
2098 Requires that the sections are in their final order. */
2101 bfd_mach_o_count_indirect_symbols (bfd
*abfd
, bfd_mach_o_data_struct
*mdata
)
2104 unsigned int nisyms
= 0;
2106 for (i
= 0; i
< mdata
->nsects
; ++i
)
2108 bfd_mach_o_section
*sec
= mdata
->sections
[i
];
2110 switch (sec
->flags
& BFD_MACH_O_SECTION_TYPE_MASK
)
2112 case BFD_MACH_O_S_NON_LAZY_SYMBOL_POINTERS
:
2113 case BFD_MACH_O_S_LAZY_SYMBOL_POINTERS
:
2114 case BFD_MACH_O_S_SYMBOL_STUBS
:
2115 nisyms
+= bfd_mach_o_section_get_nbr_indirect (abfd
, sec
);
2124 /* Create the dysymtab. */
2127 bfd_mach_o_build_dysymtab (bfd
*abfd
, bfd_mach_o_dysymtab_command
*cmd
)
2129 bfd_mach_o_data_struct
*mdata
= bfd_mach_o_get_data (abfd
);
2132 We are not going to try and fill these in yet and, moreover, we are
2133 going to bail if they are already set. */
2134 if (cmd
->nmodtab
!= 0
2136 || cmd
->nextrefsyms
!= 0)
2138 _bfd_error_handler (_("sorry: modtab, toc and extrefsyms are not yet"
2139 " implemented for dysymtab commands."));
2145 if (bfd_get_symcount (abfd
) > 0)
2147 asymbol
**symbols
= bfd_get_outsymbols (abfd
);
2150 /* Count the number of each kind of symbol. */
2151 for (i
= 0; i
< bfd_get_symcount (abfd
); ++i
)
2153 bfd_mach_o_asymbol
*s
= (bfd_mach_o_asymbol
*)symbols
[i
];
2154 if (s
->n_type
& (BFD_MACH_O_N_EXT
| BFD_MACH_O_N_PEXT
))
2158 cmd
->iextdefsym
= i
;
2159 for (; i
< bfd_get_symcount (abfd
); ++i
)
2161 bfd_mach_o_asymbol
*s
= (bfd_mach_o_asymbol
*)symbols
[i
];
2162 if ((s
->n_type
& BFD_MACH_O_N_TYPE
) == BFD_MACH_O_N_UNDF
)
2165 cmd
->nextdefsym
= i
- cmd
->nlocalsym
;
2166 cmd
->iundefsym
= cmd
->nextdefsym
+ cmd
->iextdefsym
;
2167 cmd
->nundefsym
= bfd_get_symcount (abfd
)
2174 cmd
->iextdefsym
= 0;
2175 cmd
->nextdefsym
= 0;
2180 cmd
->nindirectsyms
= bfd_mach_o_count_indirect_symbols (abfd
, mdata
);
2181 if (cmd
->nindirectsyms
> 0)
2187 mdata
->filelen
= FILE_ALIGN (mdata
->filelen
, 2);
2188 cmd
->indirectsymoff
= mdata
->filelen
;
2189 if (_bfd_mul_overflow (cmd
->nindirectsyms
, 4, &amt
))
2191 mdata
->filelen
+= amt
;
2193 cmd
->indirect_syms
= bfd_zalloc (abfd
, amt
);
2194 if (cmd
->indirect_syms
== NULL
)
2198 for (i
= 0; i
< mdata
->nsects
; ++i
)
2200 bfd_mach_o_section
*sec
= mdata
->sections
[i
];
2202 switch (sec
->flags
& BFD_MACH_O_SECTION_TYPE_MASK
)
2204 case BFD_MACH_O_S_NON_LAZY_SYMBOL_POINTERS
:
2205 case BFD_MACH_O_S_LAZY_SYMBOL_POINTERS
:
2206 case BFD_MACH_O_S_SYMBOL_STUBS
:
2209 bfd_mach_o_asymbol
**isyms
= sec
->indirect_syms
;
2211 num
= bfd_mach_o_section_get_nbr_indirect (abfd
, sec
);
2212 if (isyms
== NULL
|| num
== 0)
2214 /* Record the starting index in the reserved1 field. */
2216 for (j
= 0; j
< num
; j
++, n
++)
2218 if (isyms
[j
] == NULL
)
2219 cmd
->indirect_syms
[n
] = BFD_MACH_O_INDIRECT_SYM_LOCAL
;
2220 else if (isyms
[j
]->symbol
.section
== bfd_abs_section_ptr
2221 && ! (isyms
[j
]->n_type
& BFD_MACH_O_N_EXT
))
2222 cmd
->indirect_syms
[n
] = BFD_MACH_O_INDIRECT_SYM_LOCAL
2223 | BFD_MACH_O_INDIRECT_SYM_ABS
;
2225 cmd
->indirect_syms
[n
] = isyms
[j
]->symbol
.udata
.i
;
2238 /* Write a dysymtab command.
2239 TODO: Possibly coalesce writes of smaller objects. */
2242 bfd_mach_o_write_dysymtab (bfd
*abfd
, bfd_mach_o_load_command
*command
)
2244 bfd_mach_o_dysymtab_command
*cmd
= &command
->command
.dysymtab
;
2246 BFD_ASSERT (command
->type
== BFD_MACH_O_LC_DYSYMTAB
);
2248 if (cmd
->nmodtab
!= 0)
2252 if (bfd_seek (abfd
, cmd
->modtaboff
, SEEK_SET
) != 0)
2255 for (i
= 0; i
< cmd
->nmodtab
; i
++)
2257 bfd_mach_o_dylib_module
*module
= &cmd
->dylib_module
[i
];
2261 iinit
= module
->iinit
& 0xffff;
2262 iinit
|= ((module
->iterm
& 0xffff) << 16);
2264 ninit
= module
->ninit
& 0xffff;
2265 ninit
|= ((module
->nterm
& 0xffff) << 16);
2267 if (bfd_mach_o_wide_p (abfd
))
2269 struct mach_o_dylib_module_64_external w
;
2271 bfd_h_put_32 (abfd
, module
->module_name_idx
, &w
.module_name
);
2272 bfd_h_put_32 (abfd
, module
->iextdefsym
, &w
.iextdefsym
);
2273 bfd_h_put_32 (abfd
, module
->nextdefsym
, &w
.nextdefsym
);
2274 bfd_h_put_32 (abfd
, module
->irefsym
, &w
.irefsym
);
2275 bfd_h_put_32 (abfd
, module
->nrefsym
, &w
.nrefsym
);
2276 bfd_h_put_32 (abfd
, module
->ilocalsym
, &w
.ilocalsym
);
2277 bfd_h_put_32 (abfd
, module
->nlocalsym
, &w
.nlocalsym
);
2278 bfd_h_put_32 (abfd
, module
->iextrel
, &w
.iextrel
);
2279 bfd_h_put_32 (abfd
, module
->nextrel
, &w
.nextrel
);
2280 bfd_h_put_32 (abfd
, iinit
, &w
.iinit_iterm
);
2281 bfd_h_put_32 (abfd
, ninit
, &w
.ninit_nterm
);
2282 bfd_h_put_64 (abfd
, module
->objc_module_info_addr
,
2283 &w
.objc_module_info_addr
);
2284 bfd_h_put_32 (abfd
, module
->objc_module_info_size
,
2285 &w
.objc_module_info_size
);
2287 if (bfd_bwrite ((void *) &w
, sizeof (w
), abfd
) != sizeof (w
))
2292 struct mach_o_dylib_module_external n
;
2294 bfd_h_put_32 (abfd
, module
->module_name_idx
, &n
.module_name
);
2295 bfd_h_put_32 (abfd
, module
->iextdefsym
, &n
.iextdefsym
);
2296 bfd_h_put_32 (abfd
, module
->nextdefsym
, &n
.nextdefsym
);
2297 bfd_h_put_32 (abfd
, module
->irefsym
, &n
.irefsym
);
2298 bfd_h_put_32 (abfd
, module
->nrefsym
, &n
.nrefsym
);
2299 bfd_h_put_32 (abfd
, module
->ilocalsym
, &n
.ilocalsym
);
2300 bfd_h_put_32 (abfd
, module
->nlocalsym
, &n
.nlocalsym
);
2301 bfd_h_put_32 (abfd
, module
->iextrel
, &n
.iextrel
);
2302 bfd_h_put_32 (abfd
, module
->nextrel
, &n
.nextrel
);
2303 bfd_h_put_32 (abfd
, iinit
, &n
.iinit_iterm
);
2304 bfd_h_put_32 (abfd
, ninit
, &n
.ninit_nterm
);
2305 bfd_h_put_32 (abfd
, module
->objc_module_info_addr
,
2306 &n
.objc_module_info_addr
);
2307 bfd_h_put_32 (abfd
, module
->objc_module_info_size
,
2308 &n
.objc_module_info_size
);
2310 if (bfd_bwrite ((void *) &n
, sizeof (n
), abfd
) != sizeof (n
))
2320 if (bfd_seek (abfd
, cmd
->tocoff
, SEEK_SET
) != 0)
2323 for (i
= 0; i
< cmd
->ntoc
; i
++)
2325 struct mach_o_dylib_table_of_contents_external raw
;
2326 bfd_mach_o_dylib_table_of_content
*toc
= &cmd
->dylib_toc
[i
];
2328 bfd_h_put_32 (abfd
, toc
->symbol_index
, &raw
.symbol_index
);
2329 bfd_h_put_32 (abfd
, toc
->module_index
, &raw
.module_index
);
2331 if (bfd_bwrite (&raw
, sizeof (raw
), abfd
) != sizeof (raw
))
2336 if (cmd
->nindirectsyms
> 0)
2340 if (bfd_seek (abfd
, cmd
->indirectsymoff
, SEEK_SET
) != 0)
2343 for (i
= 0; i
< cmd
->nindirectsyms
; ++i
)
2345 unsigned char raw
[4];
2347 bfd_h_put_32 (abfd
, cmd
->indirect_syms
[i
], &raw
);
2348 if (bfd_bwrite (raw
, sizeof (raw
), abfd
) != sizeof (raw
))
2353 if (cmd
->nextrefsyms
!= 0)
2357 if (bfd_seek (abfd
, cmd
->extrefsymoff
, SEEK_SET
) != 0)
2360 for (i
= 0; i
< cmd
->nextrefsyms
; i
++)
2363 unsigned char raw
[4];
2364 bfd_mach_o_dylib_reference
*ref
= &cmd
->ext_refs
[i
];
2366 /* Fields isym and flags are written as bit-fields, thus we need
2367 a specific processing for endianness. */
2369 if (bfd_big_endian (abfd
))
2371 v
= ((ref
->isym
& 0xffffff) << 8);
2372 v
|= ref
->flags
& 0xff;
2376 v
= ref
->isym
& 0xffffff;
2377 v
|= ((ref
->flags
& 0xff) << 24);
2380 bfd_h_put_32 (abfd
, v
, raw
);
2381 if (bfd_bwrite (raw
, sizeof (raw
), abfd
) != sizeof (raw
))
2387 if (bfd_seek (abfd
, command
->offset
+ BFD_MACH_O_LC_SIZE
, SEEK_SET
) != 0)
2391 struct mach_o_dysymtab_command_external raw
;
2393 bfd_h_put_32 (abfd
, cmd
->ilocalsym
, &raw
.ilocalsym
);
2394 bfd_h_put_32 (abfd
, cmd
->nlocalsym
, &raw
.nlocalsym
);
2395 bfd_h_put_32 (abfd
, cmd
->iextdefsym
, &raw
.iextdefsym
);
2396 bfd_h_put_32 (abfd
, cmd
->nextdefsym
, &raw
.nextdefsym
);
2397 bfd_h_put_32 (abfd
, cmd
->iundefsym
, &raw
.iundefsym
);
2398 bfd_h_put_32 (abfd
, cmd
->nundefsym
, &raw
.nundefsym
);
2399 bfd_h_put_32 (abfd
, cmd
->tocoff
, &raw
.tocoff
);
2400 bfd_h_put_32 (abfd
, cmd
->ntoc
, &raw
.ntoc
);
2401 bfd_h_put_32 (abfd
, cmd
->modtaboff
, &raw
.modtaboff
);
2402 bfd_h_put_32 (abfd
, cmd
->nmodtab
, &raw
.nmodtab
);
2403 bfd_h_put_32 (abfd
, cmd
->extrefsymoff
, &raw
.extrefsymoff
);
2404 bfd_h_put_32 (abfd
, cmd
->nextrefsyms
, &raw
.nextrefsyms
);
2405 bfd_h_put_32 (abfd
, cmd
->indirectsymoff
, &raw
.indirectsymoff
);
2406 bfd_h_put_32 (abfd
, cmd
->nindirectsyms
, &raw
.nindirectsyms
);
2407 bfd_h_put_32 (abfd
, cmd
->extreloff
, &raw
.extreloff
);
2408 bfd_h_put_32 (abfd
, cmd
->nextrel
, &raw
.nextrel
);
2409 bfd_h_put_32 (abfd
, cmd
->locreloff
, &raw
.locreloff
);
2410 bfd_h_put_32 (abfd
, cmd
->nlocrel
, &raw
.nlocrel
);
2412 if (bfd_bwrite (&raw
, sizeof (raw
), abfd
) != sizeof (raw
))
2420 bfd_mach_o_primary_symbol_sort_key (bfd_mach_o_asymbol
*s
)
2422 unsigned mtyp
= s
->n_type
& BFD_MACH_O_N_TYPE
;
2424 /* Just leave debug symbols where they are (pretend they are local, and
2425 then they will just be sorted on position). */
2426 if (s
->n_type
& BFD_MACH_O_N_STAB
)
2429 /* Local (we should never see an undefined local AFAICT). */
2430 if (! (s
->n_type
& (BFD_MACH_O_N_EXT
| BFD_MACH_O_N_PEXT
)))
2433 /* Common symbols look like undefined externs. */
2434 if (mtyp
== BFD_MACH_O_N_UNDF
)
2437 /* A defined non-local, non-debug symbol. */
2442 bfd_mach_o_cf_symbols (const void *a
, const void *b
)
2444 bfd_mach_o_asymbol
*sa
= *(bfd_mach_o_asymbol
**) a
;
2445 bfd_mach_o_asymbol
*sb
= *(bfd_mach_o_asymbol
**) b
;
2446 unsigned int soa
, sob
;
2448 soa
= bfd_mach_o_primary_symbol_sort_key (sa
);
2449 sob
= bfd_mach_o_primary_symbol_sort_key (sb
);
2456 /* If it's local or stab, just preserve the input order. */
2459 if (sa
->symbol
.udata
.i
< sb
->symbol
.udata
.i
)
2461 if (sa
->symbol
.udata
.i
> sb
->symbol
.udata
.i
)
2464 /* This is probably an error. */
2468 /* The second sort key is name. */
2469 return strcmp (sa
->symbol
.name
, sb
->symbol
.name
);
2472 /* Process the symbols.
2474 This should be OK for single-module files - but it is not likely to work
2475 for multi-module shared libraries.
2477 (a) If the application has not filled in the relevant mach-o fields, make
2480 (b) Order them, like this:
2483 ( ii) external defined
2485 (iii) external undefined/common
2492 bfd_mach_o_mangle_symbols (bfd
*abfd
)
2495 asymbol
**symbols
= bfd_get_outsymbols (abfd
);
2497 if (symbols
== NULL
|| bfd_get_symcount (abfd
) == 0)
2500 for (i
= 0; i
< bfd_get_symcount (abfd
); i
++)
2502 bfd_mach_o_asymbol
*s
= (bfd_mach_o_asymbol
*)symbols
[i
];
2504 /* We use this value, which is out-of-range as a symbol index, to signal
2505 that the mach-o-specific data are not filled in and need to be created
2506 from the bfd values. It is much preferable for the application to do
2507 this, since more meaningful diagnostics can be made that way. */
2509 if (s
->symbol
.udata
.i
== SYM_MACHO_FIELDS_UNSET
)
2511 /* No symbol information has been set - therefore determine
2512 it from the bfd symbol flags/info. */
2513 if (s
->symbol
.section
== bfd_abs_section_ptr
)
2514 s
->n_type
= BFD_MACH_O_N_ABS
;
2515 else if (s
->symbol
.section
== bfd_und_section_ptr
)
2517 s
->n_type
= BFD_MACH_O_N_UNDF
;
2518 if (s
->symbol
.flags
& BSF_WEAK
)
2519 s
->n_desc
|= BFD_MACH_O_N_WEAK_REF
;
2520 /* mach-o automatically makes undefined symbols extern. */
2521 s
->n_type
|= BFD_MACH_O_N_EXT
;
2522 s
->symbol
.flags
|= BSF_GLOBAL
;
2524 else if (s
->symbol
.section
== bfd_com_section_ptr
)
2526 s
->n_type
= BFD_MACH_O_N_UNDF
| BFD_MACH_O_N_EXT
;
2527 s
->symbol
.flags
|= BSF_GLOBAL
;
2530 s
->n_type
= BFD_MACH_O_N_SECT
;
2533 /* Update external symbol bit in case objcopy changed it. */
2534 if (s
->symbol
.flags
& BSF_GLOBAL
)
2535 s
->n_type
|= BFD_MACH_O_N_EXT
;
2537 s
->n_type
&= ~BFD_MACH_O_N_EXT
;
2539 /* Put the section index in, where required. */
2540 if ((s
->symbol
.section
!= bfd_abs_section_ptr
2541 && s
->symbol
.section
!= bfd_und_section_ptr
2542 && s
->symbol
.section
!= bfd_com_section_ptr
)
2543 || ((s
->n_type
& BFD_MACH_O_N_STAB
) != 0
2544 && s
->symbol
.name
== NULL
))
2545 s
->n_sect
= s
->symbol
.section
->output_section
->target_index
;
2547 /* Number to preserve order for local and debug syms. */
2548 s
->symbol
.udata
.i
= i
;
2551 /* Sort the symbols. */
2552 qsort ((void *) symbols
, (size_t) bfd_get_symcount (abfd
),
2553 sizeof (asymbol
*), bfd_mach_o_cf_symbols
);
2555 for (i
= 0; i
< bfd_get_symcount (abfd
); ++i
)
2557 bfd_mach_o_asymbol
*s
= (bfd_mach_o_asymbol
*)symbols
[i
];
2558 s
->symbol
.udata
.i
= i
; /* renumber. */
2564 /* We build a flat table of sections, which can be re-ordered if necessary.
2565 Fill in the section number and other mach-o-specific data. */
2568 bfd_mach_o_mangle_sections (bfd
*abfd
, bfd_mach_o_data_struct
*mdata
)
2571 unsigned target_index
;
2575 nsect
= bfd_count_sections (abfd
);
2577 /* Don't do it if it's already set - assume the application knows what it's
2579 if (mdata
->nsects
== nsect
2580 && (mdata
->nsects
== 0 || mdata
->sections
!= NULL
))
2583 /* We need to check that this can be done... */
2586 _bfd_error_handler (_("mach-o: there are too many sections (%u)"
2587 " maximum is 255,\n"), nsect
);
2591 mdata
->nsects
= nsect
;
2592 amt
= mdata
->nsects
* sizeof (bfd_mach_o_section
*);
2593 mdata
->sections
= bfd_alloc (abfd
, amt
);
2594 if (mdata
->sections
== NULL
)
2597 /* Create Mach-O sections.
2598 Section type, attribute and align should have been set when the
2599 section was created - either read in or specified. */
2601 for (sec
= abfd
->sections
; sec
; sec
= sec
->next
)
2603 unsigned bfd_align
= bfd_section_alignment (sec
);
2604 bfd_mach_o_section
*msect
= bfd_mach_o_get_mach_o_section (sec
);
2606 mdata
->sections
[target_index
] = msect
;
2608 msect
->addr
= bfd_section_vma (sec
);
2609 msect
->size
= bfd_section_size (sec
);
2611 /* Use the largest alignment set, in case it was bumped after the
2612 section was created. */
2613 msect
->align
= msect
->align
> bfd_align
? msect
->align
: bfd_align
;
2616 sec
->target_index
= ++target_index
;
2623 bfd_mach_o_write_contents (bfd
*abfd
)
2625 bfd_mach_o_data_struct
*mdata
= bfd_mach_o_get_data (abfd
);
2626 bfd_mach_o_load_command
*cmd
;
2627 bfd_mach_o_symtab_command
*symtab
= NULL
;
2628 bfd_mach_o_dysymtab_command
*dysymtab
= NULL
;
2629 bfd_mach_o_segment_command
*linkedit
= NULL
;
2631 /* Make the commands, if not already present. */
2632 if (!abfd
->output_has_begun
&& !bfd_mach_o_build_commands (abfd
))
2634 abfd
->output_has_begun
= true;
2636 /* Write the header. */
2637 if (!bfd_mach_o_write_header (abfd
, &mdata
->header
))
2640 /* First pass: allocate the linkedit segment. */
2641 for (cmd
= mdata
->first_command
; cmd
!= NULL
; cmd
= cmd
->next
)
2644 case BFD_MACH_O_LC_SEGMENT_64
:
2645 case BFD_MACH_O_LC_SEGMENT
:
2646 if (strcmp (cmd
->command
.segment
.segname
, "__LINKEDIT") == 0)
2647 linkedit
= &cmd
->command
.segment
;
2649 case BFD_MACH_O_LC_SYMTAB
:
2650 symtab
= &cmd
->command
.symtab
;
2652 case BFD_MACH_O_LC_DYSYMTAB
:
2653 dysymtab
= &cmd
->command
.dysymtab
;
2655 case BFD_MACH_O_LC_DYLD_INFO
:
2657 bfd_mach_o_dyld_info_command
*di
= &cmd
->command
.dyld_info
;
2659 di
->rebase_off
= di
->rebase_size
!= 0 ? mdata
->filelen
: 0;
2660 mdata
->filelen
+= di
->rebase_size
;
2661 di
->bind_off
= di
->bind_size
!= 0 ? mdata
->filelen
: 0;
2662 mdata
->filelen
+= di
->bind_size
;
2663 di
->weak_bind_off
= di
->weak_bind_size
!= 0 ? mdata
->filelen
: 0;
2664 mdata
->filelen
+= di
->weak_bind_size
;
2665 di
->lazy_bind_off
= di
->lazy_bind_size
!= 0 ? mdata
->filelen
: 0;
2666 mdata
->filelen
+= di
->lazy_bind_size
;
2667 di
->export_off
= di
->export_size
!= 0 ? mdata
->filelen
: 0;
2668 mdata
->filelen
+= di
->export_size
;
2671 case BFD_MACH_O_LC_LOAD_DYLIB
:
2672 case BFD_MACH_O_LC_LOAD_DYLINKER
:
2673 case BFD_MACH_O_LC_MAIN
:
2674 /* Nothing to do. */
2678 (_("unable to allocate data for load command %#x"),
2683 /* Specially handle symtab and dysymtab. */
2685 /* Pre-allocate the symbol table (but not the string table). The reason
2686 is that the dysymtab is after the symbol table but before the string
2687 table (required by the native strip tool). */
2690 unsigned int symlen
;
2691 unsigned int wide
= bfd_mach_o_wide_p (abfd
);
2693 symlen
= wide
? BFD_MACH_O_NLIST_64_SIZE
: BFD_MACH_O_NLIST_SIZE
;
2695 /* Align for symbols. */
2696 mdata
->filelen
= FILE_ALIGN (mdata
->filelen
, wide
? 3 : 2);
2697 symtab
->symoff
= mdata
->filelen
;
2699 symtab
->nsyms
= bfd_get_symcount (abfd
);
2700 mdata
->filelen
+= symtab
->nsyms
* symlen
;
2703 /* Build the dysymtab. */
2704 if (dysymtab
!= NULL
)
2705 if (!bfd_mach_o_build_dysymtab (abfd
, dysymtab
))
2708 /* Write symtab and strtab. */
2710 if (!bfd_mach_o_write_symtab_content (abfd
, symtab
))
2713 /* Adjust linkedit size. */
2714 if (linkedit
!= NULL
)
2716 /* bfd_vma pagemask = bfd_mach_o_get_backend_data (abfd)->page_size - 1; */
2718 linkedit
->vmsize
= mdata
->filelen
- linkedit
->fileoff
;
2719 /* linkedit->vmsize = (linkedit->vmsize + pagemask) & ~pagemask; */
2720 linkedit
->filesize
= mdata
->filelen
- linkedit
->fileoff
;
2722 linkedit
->initprot
= BFD_MACH_O_PROT_READ
;
2723 linkedit
->maxprot
= BFD_MACH_O_PROT_READ
| BFD_MACH_O_PROT_WRITE
2724 | BFD_MACH_O_PROT_EXECUTE
;
2727 /* Second pass: write commands. */
2728 for (cmd
= mdata
->first_command
; cmd
!= NULL
; cmd
= cmd
->next
)
2730 struct mach_o_load_command_external raw
;
2731 unsigned long typeflag
;
2733 typeflag
= cmd
->type
| (cmd
->type_required
? BFD_MACH_O_LC_REQ_DYLD
: 0);
2735 bfd_h_put_32 (abfd
, typeflag
, raw
.cmd
);
2736 bfd_h_put_32 (abfd
, cmd
->len
, raw
.cmdsize
);
2738 if (bfd_seek (abfd
, cmd
->offset
, SEEK_SET
) != 0
2739 || bfd_bwrite (&raw
, BFD_MACH_O_LC_SIZE
, abfd
) != 8)
2744 case BFD_MACH_O_LC_SEGMENT
:
2745 if (!bfd_mach_o_write_segment_32 (abfd
, cmd
))
2748 case BFD_MACH_O_LC_SEGMENT_64
:
2749 if (!bfd_mach_o_write_segment_64 (abfd
, cmd
))
2752 case BFD_MACH_O_LC_SYMTAB
:
2753 if (!bfd_mach_o_write_symtab (abfd
, cmd
))
2756 case BFD_MACH_O_LC_DYSYMTAB
:
2757 if (!bfd_mach_o_write_dysymtab (abfd
, cmd
))
2760 case BFD_MACH_O_LC_THREAD
:
2761 case BFD_MACH_O_LC_UNIXTHREAD
:
2762 if (!bfd_mach_o_write_thread (abfd
, cmd
))
2765 case BFD_MACH_O_LC_LOAD_DYLIB
:
2766 if (!bfd_mach_o_write_dylib (abfd
, cmd
))
2769 case BFD_MACH_O_LC_LOAD_DYLINKER
:
2770 if (!bfd_mach_o_write_dylinker (abfd
, cmd
))
2773 case BFD_MACH_O_LC_MAIN
:
2774 if (!bfd_mach_o_write_main (abfd
, cmd
))
2777 case BFD_MACH_O_LC_DYLD_INFO
:
2778 if (!bfd_mach_o_write_dyld_info (abfd
, cmd
))
2783 (_("unable to write unknown load command %#x"),
2793 bfd_mach_o_append_section_to_segment (bfd_mach_o_segment_command
*seg
,
2794 bfd_mach_o_section
*s
)
2796 if (seg
->sect_head
== NULL
)
2799 seg
->sect_tail
->next
= s
;
2803 /* Create section Mach-O flags from BFD flags. */
2806 bfd_mach_o_set_section_flags_from_bfd (bfd
*abfd ATTRIBUTE_UNUSED
,
2810 bfd_mach_o_section
*s
= bfd_mach_o_get_mach_o_section (sec
);
2812 /* Create default flags. */
2813 bfd_flags
= bfd_section_flags (sec
);
2814 if ((bfd_flags
& SEC_CODE
) == SEC_CODE
)
2815 s
->flags
= BFD_MACH_O_S_ATTR_PURE_INSTRUCTIONS
2816 | BFD_MACH_O_S_ATTR_SOME_INSTRUCTIONS
2817 | BFD_MACH_O_S_REGULAR
;
2818 else if ((bfd_flags
& (SEC_ALLOC
| SEC_LOAD
)) == SEC_ALLOC
)
2819 s
->flags
= BFD_MACH_O_S_ZEROFILL
;
2820 else if (bfd_flags
& SEC_DEBUGGING
)
2821 s
->flags
= BFD_MACH_O_S_REGULAR
| BFD_MACH_O_S_ATTR_DEBUG
;
2823 s
->flags
= BFD_MACH_O_S_REGULAR
;
2827 bfd_mach_o_build_obj_seg_command (bfd
*abfd
, bfd_mach_o_segment_command
*seg
)
2829 bfd_mach_o_data_struct
*mdata
= bfd_mach_o_get_data (abfd
);
2833 seg
->fileoff
= mdata
->filelen
;
2834 seg
->initprot
= BFD_MACH_O_PROT_READ
| BFD_MACH_O_PROT_WRITE
2835 | BFD_MACH_O_PROT_EXECUTE
;
2836 seg
->maxprot
= seg
->initprot
;
2838 /* Append sections to the segment.
2840 This is a little tedious, we have to honor the need to account zerofill
2841 sections after all the rest. This forces us to do the calculation of
2842 total vmsize in three passes so that any alignment increments are
2843 properly accounted. */
2844 for (i
= 0; i
< mdata
->nsects
; ++i
)
2846 bfd_mach_o_section
*s
= mdata
->sections
[i
];
2847 asection
*sec
= s
->bfdsection
;
2849 /* Although we account for zerofill section sizes in vm order, they are
2850 placed in the file in source sequence. */
2851 bfd_mach_o_append_section_to_segment (seg
, s
);
2854 /* Zerofill sections have zero file size & offset, the only content
2855 written to the file is the symbols. */
2856 if ((s
->flags
& BFD_MACH_O_SECTION_TYPE_MASK
) == BFD_MACH_O_S_ZEROFILL
2857 || ((s
->flags
& BFD_MACH_O_SECTION_TYPE_MASK
)
2858 == BFD_MACH_O_S_GB_ZEROFILL
))
2861 /* The Darwin system tools (in MH_OBJECT files, at least) always account
2862 sections, even those with zero size. */
2865 seg
->vmsize
= FILE_ALIGN (seg
->vmsize
, s
->align
);
2866 seg
->vmsize
+= s
->size
;
2868 /* MH_OBJECT files have unaligned content. */
2871 seg
->filesize
= FILE_ALIGN (seg
->filesize
, s
->align
);
2872 mdata
->filelen
= FILE_ALIGN (mdata
->filelen
, s
->align
);
2874 seg
->filesize
+= s
->size
;
2876 /* The system tools write even zero-sized sections with an offset
2877 field set to the current file position. */
2878 s
->offset
= mdata
->filelen
;
2881 sec
->filepos
= s
->offset
;
2882 mdata
->filelen
+= s
->size
;
2885 /* Now pass through again, for zerofill, only now we just update the
2886 vmsize, and then for zerofill_GB. */
2887 for (j
= 0; j
< 2; j
++)
2892 stype
= BFD_MACH_O_S_ZEROFILL
;
2894 stype
= BFD_MACH_O_S_GB_ZEROFILL
;
2896 for (i
= 0; i
< mdata
->nsects
; ++i
)
2898 bfd_mach_o_section
*s
= mdata
->sections
[i
];
2900 if ((s
->flags
& BFD_MACH_O_SECTION_TYPE_MASK
) != stype
)
2905 seg
->vmsize
= FILE_ALIGN (seg
->vmsize
, s
->align
);
2906 seg
->vmsize
+= s
->size
;
2911 /* Allocate space for the relocations. */
2912 mdata
->filelen
= FILE_ALIGN (mdata
->filelen
, 2);
2914 for (i
= 0; i
< mdata
->nsects
; ++i
)
2916 bfd_mach_o_section
*ms
= mdata
->sections
[i
];
2917 asection
*sec
= ms
->bfdsection
;
2919 ms
->nreloc
= sec
->reloc_count
;
2920 if (ms
->nreloc
== 0)
2922 /* Clear nreloc and reloff if there is no relocs. */
2926 sec
->rel_filepos
= mdata
->filelen
;
2927 ms
->reloff
= sec
->rel_filepos
;
2928 mdata
->filelen
+= sec
->reloc_count
* BFD_MACH_O_RELENT_SIZE
;
2935 bfd_mach_o_build_exec_seg_command (bfd
*abfd
, bfd_mach_o_segment_command
*seg
)
2937 bfd_mach_o_data_struct
*mdata
= bfd_mach_o_get_data (abfd
);
2939 bfd_vma pagemask
= bfd_mach_o_get_backend_data (abfd
)->page_size
- 1;
2941 bfd_mach_o_section
*s
;
2945 seg
->fileoff
= mdata
->filelen
;
2950 /* Append sections to the segment. We assume they are properly ordered
2951 by vma (but we check that). */
2953 for (i
= 0; i
< mdata
->nsects
; ++i
)
2955 s
= mdata
->sections
[i
];
2957 /* Consider only sections for this segment. */
2958 if (strcmp (seg
->segname
, s
->segname
) != 0)
2961 bfd_mach_o_append_section_to_segment (seg
, s
);
2966 /* xgettext:c-format */
2967 (_("section address (%#" PRIx64
") "
2968 "below start of segment (%#" PRIx64
")"),
2969 (uint64_t) s
->addr
, (uint64_t) vma
);
2973 vma
= s
->addr
+ s
->size
;
2976 /* Set segment file offset: make it page aligned. */
2977 vma
= seg
->sect_head
->addr
;
2978 seg
->vmaddr
= vma
& ~pagemask
;
2979 if ((mdata
->filelen
& pagemask
) > (vma
& pagemask
))
2980 mdata
->filelen
+= pagemask
+ 1;
2981 seg
->fileoff
= mdata
->filelen
& ~pagemask
;
2982 mdata
->filelen
= seg
->fileoff
+ (vma
& pagemask
);
2984 /* Set section file offset. */
2985 for (s
= seg
->sect_head
; s
!= NULL
; s
= s
->next
)
2987 asection
*sec
= s
->bfdsection
;
2988 flagword flags
= bfd_section_flags (sec
);
2990 /* Adjust segment size. */
2991 seg
->vmsize
= FILE_ALIGN (seg
->vmsize
, s
->align
);
2992 seg
->vmsize
+= s
->size
;
2994 /* File offset and length. */
2995 seg
->filesize
= FILE_ALIGN (seg
->filesize
, s
->align
);
2997 if ((s
->flags
& BFD_MACH_O_SECTION_TYPE_MASK
) != BFD_MACH_O_S_ZEROFILL
2998 && ((s
->flags
& BFD_MACH_O_SECTION_TYPE_MASK
)
2999 != BFD_MACH_O_S_GB_ZEROFILL
))
3001 mdata
->filelen
= FILE_ALIGN (mdata
->filelen
, s
->align
);
3003 s
->offset
= mdata
->filelen
;
3004 s
->bfdsection
->filepos
= s
->offset
;
3006 seg
->filesize
+= s
->size
;
3007 mdata
->filelen
+= s
->size
;
3012 s
->bfdsection
->filepos
= 0;
3015 /* Set protection. */
3016 if (flags
& SEC_LOAD
)
3018 if (flags
& SEC_CODE
)
3019 seg
->initprot
|= BFD_MACH_O_PROT_READ
| BFD_MACH_O_PROT_EXECUTE
;
3020 if ((flags
& (SEC_DATA
| SEC_READONLY
)) == SEC_DATA
)
3021 seg
->initprot
|= BFD_MACH_O_PROT_WRITE
| BFD_MACH_O_PROT_READ
;
3024 /* Relocs shouldn't appear in non-object files. */
3025 if (s
->bfdsection
->reloc_count
!= 0)
3030 if (seg
->initprot
!= 0)
3031 seg
->maxprot
= BFD_MACH_O_PROT_READ
| BFD_MACH_O_PROT_WRITE
3032 | BFD_MACH_O_PROT_EXECUTE
;
3036 /* Round segment size (and file size). */
3037 seg
->vmsize
= (seg
->vmsize
+ pagemask
) & ~pagemask
;
3038 seg
->filesize
= (seg
->filesize
+ pagemask
) & ~pagemask
;
3039 mdata
->filelen
= (mdata
->filelen
+ pagemask
) & ~pagemask
;
3044 /* Layout the commands: set commands size and offset, set ncmds and sizeofcmds
3045 fields in header. */
3048 bfd_mach_o_layout_commands (bfd_mach_o_data_struct
*mdata
)
3050 unsigned wide
= mach_o_wide_p (&mdata
->header
);
3051 unsigned int hdrlen
;
3053 bfd_mach_o_load_command
*cmd
;
3057 hdrlen
= wide
? BFD_MACH_O_HEADER_64_SIZE
: BFD_MACH_O_HEADER_SIZE
;
3058 align
= wide
? 8 - 1 : 4 - 1;
3060 mdata
->header
.ncmds
= 0;
3062 for (cmd
= mdata
->first_command
; cmd
; cmd
= cmd
->next
)
3064 mdata
->header
.ncmds
++;
3065 cmd
->offset
= offset
;
3069 case BFD_MACH_O_LC_SEGMENT_64
:
3070 cmd
->len
= BFD_MACH_O_LC_SEGMENT_64_SIZE
3071 + BFD_MACH_O_SECTION_64_SIZE
* cmd
->command
.segment
.nsects
;
3073 case BFD_MACH_O_LC_SEGMENT
:
3074 cmd
->len
= BFD_MACH_O_LC_SEGMENT_SIZE
3075 + BFD_MACH_O_SECTION_SIZE
* cmd
->command
.segment
.nsects
;
3077 case BFD_MACH_O_LC_SYMTAB
:
3078 cmd
->len
= sizeof (struct mach_o_symtab_command_external
)
3079 + BFD_MACH_O_LC_SIZE
;
3081 case BFD_MACH_O_LC_DYSYMTAB
:
3082 cmd
->len
= sizeof (struct mach_o_dysymtab_command_external
)
3083 + BFD_MACH_O_LC_SIZE
;
3085 case BFD_MACH_O_LC_LOAD_DYLIB
:
3086 cmd
->len
= sizeof (struct mach_o_dylib_command_external
)
3087 + BFD_MACH_O_LC_SIZE
;
3088 cmd
->command
.dylib
.name_offset
= cmd
->len
;
3089 cmd
->len
+= strlen (cmd
->command
.dylib
.name_str
);
3090 cmd
->len
= (cmd
->len
+ align
) & ~align
;
3092 case BFD_MACH_O_LC_LOAD_DYLINKER
:
3093 cmd
->len
= sizeof (struct mach_o_str_command_external
)
3094 + BFD_MACH_O_LC_SIZE
;
3095 cmd
->command
.dylinker
.name_offset
= cmd
->len
;
3096 cmd
->len
+= strlen (cmd
->command
.dylinker
.name_str
);
3097 cmd
->len
= (cmd
->len
+ align
) & ~align
;
3099 case BFD_MACH_O_LC_MAIN
:
3100 cmd
->len
= sizeof (struct mach_o_entry_point_command_external
)
3101 + BFD_MACH_O_LC_SIZE
;
3103 case BFD_MACH_O_LC_DYLD_INFO
:
3104 cmd
->len
= sizeof (struct mach_o_dyld_info_command_external
)
3105 + BFD_MACH_O_LC_SIZE
;
3109 (_("unable to layout unknown load command %#x"),
3115 BFD_ASSERT (cmd
->len
% (align
+ 1) == 0);
3118 mdata
->header
.sizeofcmds
= offset
- hdrlen
;
3119 mdata
->filelen
= offset
;
3124 /* Subroutine of bfd_mach_o_build_commands: set type, name and nsects of a
3128 bfd_mach_o_init_segment (bfd_mach_o_data_struct
*mdata
,
3129 bfd_mach_o_load_command
*cmd
,
3130 const char *segname
, unsigned int nbr_sect
)
3132 bfd_mach_o_segment_command
*seg
= &cmd
->command
.segment
;
3133 unsigned wide
= mach_o_wide_p (&mdata
->header
);
3135 /* Init segment command. */
3136 cmd
->type
= wide
? BFD_MACH_O_LC_SEGMENT_64
: BFD_MACH_O_LC_SEGMENT
;
3137 cmd
->type_required
= false;
3139 strcpy (seg
->segname
, segname
);
3140 seg
->nsects
= nbr_sect
;
3150 seg
->sect_head
= NULL
;
3151 seg
->sect_tail
= NULL
;
3154 /* Build Mach-O load commands (currently assuming an MH_OBJECT file).
3155 TODO: Other file formats, rebuilding symtab/dysymtab commands for strip
3156 and copy functionality. */
3159 bfd_mach_o_build_commands (bfd
*abfd
)
3161 bfd_mach_o_data_struct
*mdata
= bfd_mach_o_get_data (abfd
);
3162 unsigned wide
= mach_o_wide_p (&mdata
->header
);
3163 unsigned int nbr_segcmd
= 0;
3164 bfd_mach_o_load_command
*commands
;
3165 unsigned int nbr_commands
;
3166 int symtab_idx
= -1;
3167 int dysymtab_idx
= -1;
3171 /* Return now if already built. */
3172 if (mdata
->header
.ncmds
!= 0)
3175 /* Fill in the file type, if not already set. */
3176 if (mdata
->header
.filetype
== 0)
3178 if (abfd
->flags
& EXEC_P
)
3179 mdata
->header
.filetype
= BFD_MACH_O_MH_EXECUTE
;
3180 else if (abfd
->flags
& DYNAMIC
)
3181 mdata
->header
.filetype
= BFD_MACH_O_MH_DYLIB
;
3183 mdata
->header
.filetype
= BFD_MACH_O_MH_OBJECT
;
3186 /* If hasn't already been done, flatten sections list, and sort
3187 if/when required. Must be done before the symbol table is adjusted,
3188 since that depends on properly numbered sections. */
3189 if (mdata
->nsects
== 0 || mdata
->sections
== NULL
)
3190 if (! bfd_mach_o_mangle_sections (abfd
, mdata
))
3193 /* Order the symbol table, fill-in/check mach-o specific fields and
3194 partition out any indirect symbols. */
3195 if (!bfd_mach_o_mangle_symbols (abfd
))
3198 /* Segment commands. */
3199 if (mdata
->header
.filetype
== BFD_MACH_O_MH_OBJECT
)
3201 /* Only one segment for all the sections. But the segment is
3202 optional if there is no sections. */
3203 nbr_segcmd
= (mdata
->nsects
> 0) ? 1 : 0;
3207 bfd_mach_o_section
*prev_sect
= NULL
;
3209 /* One pagezero segment and one linkedit segment. */
3212 /* Create one segment for associated segment name in sections.
3213 Assume that sections with the same segment name are consecutive. */
3214 for (i
= 0; i
< mdata
->nsects
; i
++)
3216 bfd_mach_o_section
*this_sect
= mdata
->sections
[i
];
3218 if (prev_sect
== NULL
3219 || strcmp (prev_sect
->segname
, this_sect
->segname
) != 0)
3222 prev_sect
= this_sect
;
3227 nbr_commands
= nbr_segcmd
;
3229 /* One command for the symbol table (only if there are symbols. */
3230 if (bfd_get_symcount (abfd
) > 0)
3231 symtab_idx
= nbr_commands
++;
3234 This is a rather crude test for whether we should build a dysymtab. */
3235 if (bfd_mach_o_should_emit_dysymtab ()
3236 && bfd_get_symcount (abfd
))
3238 /* If there should be a case where a dysymtab could be emitted without
3239 a symtab (seems improbable), this would need amending. */
3240 dysymtab_idx
= nbr_commands
++;
3243 /* Add an entry point command. */
3244 if (mdata
->header
.filetype
== BFD_MACH_O_MH_EXECUTE
3245 && bfd_get_start_address (abfd
) != 0)
3246 main_idx
= nbr_commands
++;
3248 /* Well, we must have a header, at least. */
3249 mdata
->filelen
= wide
? BFD_MACH_O_HEADER_64_SIZE
: BFD_MACH_O_HEADER_SIZE
;
3251 /* A bit unusual, but no content is valid;
3252 as -n empty.s -o empty.o */
3253 if (nbr_commands
== 0)
3255 /* Layout commands (well none...) and set headers command fields. */
3256 return bfd_mach_o_layout_commands (mdata
);
3259 /* Create commands for segments (and symtabs), prepend them. */
3260 commands
= bfd_zalloc (abfd
, nbr_commands
* sizeof (bfd_mach_o_load_command
));
3261 if (commands
== NULL
)
3263 for (i
= 0; i
< nbr_commands
- 1; i
++)
3264 commands
[i
].next
= &commands
[i
+ 1];
3265 commands
[nbr_commands
- 1].next
= mdata
->first_command
;
3266 if (mdata
->first_command
== NULL
)
3267 mdata
->last_command
= &commands
[nbr_commands
- 1];
3268 mdata
->first_command
= &commands
[0];
3270 if (mdata
->header
.filetype
== BFD_MACH_O_MH_OBJECT
&& nbr_segcmd
!= 0)
3272 /* For object file, there is only one segment. */
3273 bfd_mach_o_init_segment (mdata
, &commands
[0], "", mdata
->nsects
);
3275 else if (nbr_segcmd
!= 0)
3277 bfd_mach_o_load_command
*cmd
;
3279 BFD_ASSERT (nbr_segcmd
>= 2);
3283 bfd_mach_o_init_segment (mdata
, cmd
, "__PAGEZERO", 0);
3285 /* Segments from sections. */
3287 for (i
= 0; i
< mdata
->nsects
;)
3289 const char *segname
= mdata
->sections
[i
]->segname
;
3290 unsigned int nbr_sect
= 1;
3292 /* Count number of sections for this segment. */
3293 for (i
++; i
< mdata
->nsects
; i
++)
3294 if (strcmp (mdata
->sections
[i
]->segname
, segname
) == 0)
3299 bfd_mach_o_init_segment (mdata
, cmd
, segname
, nbr_sect
);
3304 bfd_mach_o_init_segment (mdata
, cmd
, "__LINKEDIT", 0);
3307 if (symtab_idx
>= 0)
3309 /* Init symtab command. */
3310 bfd_mach_o_load_command
*cmd
= &commands
[symtab_idx
];
3312 cmd
->type
= BFD_MACH_O_LC_SYMTAB
;
3313 cmd
->type_required
= false;
3316 /* If required, setup symtab command, see comment above about the quality
3318 if (dysymtab_idx
>= 0)
3320 bfd_mach_o_load_command
*cmd
= &commands
[dysymtab_idx
];
3322 cmd
->type
= BFD_MACH_O_LC_DYSYMTAB
;
3323 cmd
->type_required
= false;
3326 /* Create the main command. */
3329 bfd_mach_o_load_command
*cmd
= &commands
[main_idx
];
3331 cmd
->type
= BFD_MACH_O_LC_MAIN
;
3332 cmd
->type_required
= true;
3334 cmd
->command
.main
.entryoff
= 0;
3335 cmd
->command
.main
.stacksize
= 0;
3338 /* Layout commands. */
3339 if (! bfd_mach_o_layout_commands (mdata
))
3342 /* So, now we have sized the commands and the filelen set to that.
3343 Now we can build the segment command and set the section file offsets. */
3344 if (mdata
->header
.filetype
== BFD_MACH_O_MH_OBJECT
)
3346 for (i
= 0; i
< nbr_segcmd
; i
++)
3347 if (!bfd_mach_o_build_obj_seg_command
3348 (abfd
, &commands
[i
].command
.segment
))
3355 /* Skip pagezero and linkedit segments. */
3356 for (i
= 1; i
< nbr_segcmd
- 1; i
++)
3358 bfd_mach_o_segment_command
*seg
= &commands
[i
].command
.segment
;
3360 if (!bfd_mach_o_build_exec_seg_command (abfd
, seg
))
3363 if (seg
->vmaddr
+ seg
->vmsize
> maxvma
)
3364 maxvma
= seg
->vmaddr
+ seg
->vmsize
;
3367 /* Set the size of __PAGEZERO. */
3368 commands
[0].command
.segment
.vmsize
=
3369 commands
[1].command
.segment
.vmaddr
;
3371 /* Set the vma and fileoff of __LINKEDIT. */
3372 commands
[nbr_segcmd
- 1].command
.segment
.vmaddr
= maxvma
;
3373 commands
[nbr_segcmd
- 1].command
.segment
.fileoff
= mdata
->filelen
;
3375 /* Set entry point (once segments have been laid out). */
3377 commands
[main_idx
].command
.main
.entryoff
=
3378 bfd_get_start_address (abfd
) - commands
[1].command
.segment
.vmaddr
;
3384 /* Set the contents of a section. */
3387 bfd_mach_o_set_section_contents (bfd
*abfd
,
3389 const void * location
,
3391 bfd_size_type count
)
3395 /* Trying to write the first section contents will trigger the creation of
3396 the load commands if they are not already present. */
3397 if (!abfd
->output_has_begun
&& !bfd_mach_o_build_commands (abfd
))
3403 pos
= section
->filepos
+ offset
;
3404 if (bfd_seek (abfd
, pos
, SEEK_SET
) != 0
3405 || bfd_bwrite (location
, count
, abfd
) != count
)
3412 bfd_mach_o_sizeof_headers (bfd
*a ATTRIBUTE_UNUSED
,
3413 struct bfd_link_info
*info ATTRIBUTE_UNUSED
)
3418 /* Make an empty symbol. This is required only because
3419 bfd_make_section_anyway wants to create a symbol for the section. */
3422 bfd_mach_o_make_empty_symbol (bfd
*abfd
)
3424 asymbol
*new_symbol
;
3426 new_symbol
= bfd_zalloc (abfd
, sizeof (bfd_mach_o_asymbol
));
3427 if (new_symbol
== NULL
)
3429 new_symbol
->the_bfd
= abfd
;
3430 new_symbol
->udata
.i
= SYM_MACHO_FIELDS_UNSET
;
3435 bfd_mach_o_read_header (bfd
*abfd
, file_ptr hdr_off
, bfd_mach_o_header
*header
)
3437 struct mach_o_header_external raw
;
3439 bfd_vma (*get32
) (const void *) = NULL
;
3441 /* Just read the magic number. */
3442 if (bfd_seek (abfd
, hdr_off
, SEEK_SET
) != 0
3443 || bfd_bread (raw
.magic
, sizeof (raw
.magic
), abfd
) != 4)
3446 if (bfd_getb32 (raw
.magic
) == BFD_MACH_O_MH_MAGIC
)
3448 header
->byteorder
= BFD_ENDIAN_BIG
;
3449 header
->magic
= BFD_MACH_O_MH_MAGIC
;
3450 header
->version
= 1;
3453 else if (bfd_getl32 (raw
.magic
) == BFD_MACH_O_MH_MAGIC
)
3455 header
->byteorder
= BFD_ENDIAN_LITTLE
;
3456 header
->magic
= BFD_MACH_O_MH_MAGIC
;
3457 header
->version
= 1;
3460 else if (bfd_getb32 (raw
.magic
) == BFD_MACH_O_MH_MAGIC_64
)
3462 header
->byteorder
= BFD_ENDIAN_BIG
;
3463 header
->magic
= BFD_MACH_O_MH_MAGIC_64
;
3464 header
->version
= 2;
3467 else if (bfd_getl32 (raw
.magic
) == BFD_MACH_O_MH_MAGIC_64
)
3469 header
->byteorder
= BFD_ENDIAN_LITTLE
;
3470 header
->magic
= BFD_MACH_O_MH_MAGIC_64
;
3471 header
->version
= 2;
3476 header
->byteorder
= BFD_ENDIAN_UNKNOWN
;
3480 /* Once the size of the header is known, read the full header. */
3481 size
= mach_o_wide_p (header
) ?
3482 BFD_MACH_O_HEADER_64_SIZE
: BFD_MACH_O_HEADER_SIZE
;
3484 if (bfd_seek (abfd
, hdr_off
, SEEK_SET
) != 0
3485 || bfd_bread (&raw
, size
, abfd
) != size
)
3488 header
->cputype
= (*get32
) (raw
.cputype
);
3489 header
->cpusubtype
= (*get32
) (raw
.cpusubtype
);
3490 header
->filetype
= (*get32
) (raw
.filetype
);
3491 header
->ncmds
= (*get32
) (raw
.ncmds
);
3492 header
->sizeofcmds
= (*get32
) (raw
.sizeofcmds
);
3493 header
->flags
= (*get32
) (raw
.flags
);
3495 if (mach_o_wide_p (header
))
3496 header
->reserved
= (*get32
) (raw
.reserved
);
3498 header
->reserved
= 0;
3504 bfd_mach_o_new_section_hook (bfd
*abfd
, asection
*sec
)
3506 bfd_mach_o_section
*s
;
3507 unsigned bfdalign
= bfd_section_alignment (sec
);
3509 s
= bfd_mach_o_get_mach_o_section (sec
);
3513 static const mach_o_section_name_xlat
* xlat
;
3515 s
= (bfd_mach_o_section
*) bfd_zalloc (abfd
, sizeof (*s
));
3518 sec
->used_by_bfd
= s
;
3519 s
->bfdsection
= sec
;
3521 /* Create the Darwin seg/sect name pair from the bfd name.
3522 If this is a canonical name for which a specific paiting exists
3523 there will also be defined flags, type, attribute and alignment
3525 xlat
= bfd_mach_o_convert_section_name_to_mach_o (abfd
, sec
, s
);
3528 s
->flags
= xlat
->macho_sectype
| xlat
->macho_secattr
;
3529 s
->align
= xlat
->sectalign
> bfdalign
? xlat
->sectalign
3531 bfd_set_section_alignment (sec
, s
->align
);
3532 bfd_flags
= bfd_section_flags (sec
);
3533 if (bfd_flags
== SEC_NO_FLAGS
)
3534 bfd_set_section_flags (sec
, xlat
->bfd_flags
);
3537 /* Create default flags. */
3538 bfd_mach_o_set_section_flags_from_bfd (abfd
, sec
);
3541 return _bfd_generic_new_section_hook (abfd
, sec
);
3545 bfd_mach_o_init_section_from_mach_o (asection
*sec
, unsigned long prot
)
3548 bfd_mach_o_section
*section
;
3550 flags
= bfd_section_flags (sec
);
3551 section
= bfd_mach_o_get_mach_o_section (sec
);
3553 /* TODO: see if we should use the xlat system for doing this by
3554 preference and fall back to this for unknown sections. */
3556 if (flags
== SEC_NO_FLAGS
)
3558 /* Try to guess flags. */
3559 if (section
->flags
& BFD_MACH_O_S_ATTR_DEBUG
)
3560 flags
= SEC_DEBUGGING
;
3564 if ((section
->flags
& BFD_MACH_O_SECTION_TYPE_MASK
)
3565 != BFD_MACH_O_S_ZEROFILL
)
3568 if (prot
& BFD_MACH_O_PROT_EXECUTE
)
3570 if (prot
& BFD_MACH_O_PROT_WRITE
)
3572 else if (prot
& BFD_MACH_O_PROT_READ
)
3573 flags
|= SEC_READONLY
;
3579 if ((flags
& SEC_DEBUGGING
) == 0)
3583 if (section
->offset
!= 0)
3584 flags
|= SEC_HAS_CONTENTS
;
3585 if (section
->nreloc
!= 0)
3588 bfd_set_section_flags (sec
, flags
);
3590 sec
->vma
= section
->addr
;
3591 sec
->lma
= section
->addr
;
3592 sec
->size
= section
->size
;
3593 sec
->filepos
= section
->offset
;
3594 sec
->alignment_power
= section
->align
;
3595 sec
->segment_mark
= 0;
3596 sec
->reloc_count
= section
->nreloc
;
3597 sec
->rel_filepos
= section
->reloff
;
3601 bfd_mach_o_make_bfd_section (bfd
*abfd
,
3602 const unsigned char *segname
,
3603 const unsigned char *sectname
)
3608 bfd_mach_o_convert_section_name_to_bfd
3609 (abfd
, (const char *)segname
, (const char *)sectname
, &sname
, &flags
);
3613 return bfd_make_section_anyway_with_flags (abfd
, sname
, flags
);
3617 bfd_mach_o_read_section_32 (bfd
*abfd
, unsigned long prot
)
3619 struct mach_o_section_32_external raw
;
3621 bfd_mach_o_section
*section
;
3623 if (bfd_bread (&raw
, BFD_MACH_O_SECTION_SIZE
, abfd
)
3624 != BFD_MACH_O_SECTION_SIZE
)
3627 sec
= bfd_mach_o_make_bfd_section (abfd
, raw
.segname
, raw
.sectname
);
3631 section
= bfd_mach_o_get_mach_o_section (sec
);
3632 memcpy (section
->segname
, raw
.segname
, sizeof (raw
.segname
));
3633 section
->segname
[BFD_MACH_O_SEGNAME_SIZE
] = 0;
3634 memcpy (section
->sectname
, raw
.sectname
, sizeof (raw
.sectname
));
3635 section
->sectname
[BFD_MACH_O_SECTNAME_SIZE
] = 0;
3636 section
->addr
= bfd_h_get_32 (abfd
, raw
.addr
);
3637 section
->size
= bfd_h_get_32 (abfd
, raw
.size
);
3638 section
->offset
= bfd_h_get_32 (abfd
, raw
.offset
);
3639 section
->align
= bfd_h_get_32 (abfd
, raw
.align
);
3640 /* PR 17512: file: 0017eb76. */
3641 if (section
->align
>= 31)
3644 (_("bfd_mach_o_read_section_32: overlarge alignment value: %#lx"),
3646 section
->align
= 30;
3648 section
->reloff
= bfd_h_get_32 (abfd
, raw
.reloff
);
3649 section
->nreloc
= bfd_h_get_32 (abfd
, raw
.nreloc
);
3650 section
->flags
= bfd_h_get_32 (abfd
, raw
.flags
);
3651 section
->reserved1
= bfd_h_get_32 (abfd
, raw
.reserved1
);
3652 section
->reserved2
= bfd_h_get_32 (abfd
, raw
.reserved2
);
3653 section
->reserved3
= 0;
3655 bfd_mach_o_init_section_from_mach_o (sec
, prot
);
3661 bfd_mach_o_read_section_64 (bfd
*abfd
, unsigned long prot
)
3663 struct mach_o_section_64_external raw
;
3665 bfd_mach_o_section
*section
;
3667 if (bfd_bread (&raw
, BFD_MACH_O_SECTION_64_SIZE
, abfd
)
3668 != BFD_MACH_O_SECTION_64_SIZE
)
3671 sec
= bfd_mach_o_make_bfd_section (abfd
, raw
.segname
, raw
.sectname
);
3675 section
= bfd_mach_o_get_mach_o_section (sec
);
3676 memcpy (section
->segname
, raw
.segname
, sizeof (raw
.segname
));
3677 section
->segname
[BFD_MACH_O_SEGNAME_SIZE
] = 0;
3678 memcpy (section
->sectname
, raw
.sectname
, sizeof (raw
.sectname
));
3679 section
->sectname
[BFD_MACH_O_SECTNAME_SIZE
] = 0;
3680 section
->addr
= bfd_h_get_64 (abfd
, raw
.addr
);
3681 section
->size
= bfd_h_get_64 (abfd
, raw
.size
);
3682 section
->offset
= bfd_h_get_32 (abfd
, raw
.offset
);
3683 section
->align
= bfd_h_get_32 (abfd
, raw
.align
);
3684 if (section
->align
>= 63)
3687 (_("bfd_mach_o_read_section_64: overlarge alignment value: %#lx"),
3689 section
->align
= 62;
3691 section
->reloff
= bfd_h_get_32 (abfd
, raw
.reloff
);
3692 section
->nreloc
= bfd_h_get_32 (abfd
, raw
.nreloc
);
3693 section
->flags
= bfd_h_get_32 (abfd
, raw
.flags
);
3694 section
->reserved1
= bfd_h_get_32 (abfd
, raw
.reserved1
);
3695 section
->reserved2
= bfd_h_get_32 (abfd
, raw
.reserved2
);
3696 section
->reserved3
= bfd_h_get_32 (abfd
, raw
.reserved3
);
3698 bfd_mach_o_init_section_from_mach_o (sec
, prot
);
3704 bfd_mach_o_read_section (bfd
*abfd
, unsigned long prot
, unsigned int wide
)
3707 return bfd_mach_o_read_section_64 (abfd
, prot
);
3709 return bfd_mach_o_read_section_32 (abfd
, prot
);
3713 bfd_mach_o_read_symtab_symbol (bfd
*abfd
,
3714 bfd_mach_o_symtab_command
*sym
,
3715 bfd_mach_o_asymbol
*s
,
3718 bfd_mach_o_data_struct
*mdata
= bfd_mach_o_get_data (abfd
);
3719 unsigned int wide
= mach_o_wide_p (&mdata
->header
);
3720 unsigned int symwidth
=
3721 wide
? BFD_MACH_O_NLIST_64_SIZE
: BFD_MACH_O_NLIST_SIZE
;
3722 unsigned int symoff
= sym
->symoff
+ (i
* symwidth
);
3723 struct mach_o_nlist_64_external raw
;
3724 unsigned char type
= -1;
3725 unsigned char section
= -1;
3727 symvalue value
= -1;
3728 unsigned long stroff
= -1;
3729 unsigned int symtype
= -1;
3731 BFD_ASSERT (sym
->strtab
!= NULL
);
3733 if (bfd_seek (abfd
, symoff
, SEEK_SET
) != 0
3734 || bfd_bread (&raw
, symwidth
, abfd
) != symwidth
)
3737 /* xgettext:c-format */
3738 (_("bfd_mach_o_read_symtab_symbol: unable to read %d bytes at %u"),
3743 stroff
= bfd_h_get_32 (abfd
, raw
.n_strx
);
3744 type
= bfd_h_get_8 (abfd
, raw
.n_type
);
3745 symtype
= type
& BFD_MACH_O_N_TYPE
;
3746 section
= bfd_h_get_8 (abfd
, raw
.n_sect
);
3747 desc
= bfd_h_get_16 (abfd
, raw
.n_desc
);
3749 value
= bfd_h_get_64 (abfd
, raw
.n_value
);
3751 value
= bfd_h_get_32 (abfd
, raw
.n_value
);
3753 if (stroff
>= sym
->strsize
)
3756 /* xgettext:c-format */
3757 (_("bfd_mach_o_read_symtab_symbol: name out of range (%lu >= %u)"),
3763 s
->symbol
.the_bfd
= abfd
;
3764 s
->symbol
.name
= sym
->strtab
+ stroff
;
3765 s
->symbol
.value
= value
;
3766 s
->symbol
.flags
= 0x0;
3767 s
->symbol
.udata
.i
= i
;
3769 s
->n_sect
= section
;
3772 if (type
& BFD_MACH_O_N_STAB
)
3774 s
->symbol
.flags
|= BSF_DEBUGGING
;
3775 s
->symbol
.section
= bfd_und_section_ptr
;
3787 if ((section
> 0) && (section
<= mdata
->nsects
))
3789 s
->symbol
.section
= mdata
->sections
[section
- 1]->bfdsection
;
3791 s
->symbol
.value
- mdata
->sections
[section
- 1]->addr
;
3798 if (type
& (BFD_MACH_O_N_PEXT
| BFD_MACH_O_N_EXT
))
3799 s
->symbol
.flags
|= BSF_GLOBAL
;
3801 s
->symbol
.flags
|= BSF_LOCAL
;
3805 case BFD_MACH_O_N_UNDF
:
3806 if (type
== (BFD_MACH_O_N_UNDF
| BFD_MACH_O_N_EXT
)
3807 && s
->symbol
.value
!= 0)
3809 /* A common symbol. */
3810 s
->symbol
.section
= bfd_com_section_ptr
;
3811 s
->symbol
.flags
= BSF_NO_FLAGS
;
3815 s
->symbol
.section
= bfd_und_section_ptr
;
3816 if (s
->n_desc
& BFD_MACH_O_N_WEAK_REF
)
3817 s
->symbol
.flags
|= BSF_WEAK
;
3820 case BFD_MACH_O_N_PBUD
:
3821 s
->symbol
.section
= bfd_und_section_ptr
;
3823 case BFD_MACH_O_N_ABS
:
3824 s
->symbol
.section
= bfd_abs_section_ptr
;
3826 case BFD_MACH_O_N_SECT
:
3827 if ((section
> 0) && (section
<= mdata
->nsects
))
3829 s
->symbol
.section
= mdata
->sections
[section
- 1]->bfdsection
;
3831 s
->symbol
.value
- mdata
->sections
[section
- 1]->addr
;
3835 /* Mach-O uses 0 to mean "no section"; not an error. */
3839 /* xgettext:c-format */
3840 (_("bfd_mach_o_read_symtab_symbol: "
3841 "symbol \"%s\" specified invalid section %d (max %lu): "
3842 "setting to undefined"),
3843 s
->symbol
.name
, section
, mdata
->nsects
);
3845 s
->symbol
.section
= bfd_und_section_ptr
;
3848 case BFD_MACH_O_N_INDR
:
3849 /* FIXME: we don't follow the BFD convention as this indirect symbol
3850 won't be followed by the referenced one. This looks harmless
3851 unless we start using the linker. */
3852 s
->symbol
.flags
|= BSF_INDIRECT
;
3853 s
->symbol
.section
= bfd_ind_section_ptr
;
3854 s
->symbol
.value
= 0;
3858 /* xgettext:c-format */
3859 (_("bfd_mach_o_read_symtab_symbol: "
3860 "symbol \"%s\" specified invalid type field 0x%x: "
3861 "setting to undefined"), s
->symbol
.name
, symtype
);
3862 s
->symbol
.section
= bfd_und_section_ptr
;
3871 bfd_mach_o_read_symtab_strtab (bfd
*abfd
)
3873 bfd_mach_o_data_struct
*mdata
= bfd_mach_o_get_data (abfd
);
3874 bfd_mach_o_symtab_command
*sym
= mdata
->symtab
;
3876 /* Fail if there is no symtab. */
3880 /* Success if already loaded. */
3884 if (abfd
->flags
& BFD_IN_MEMORY
)
3886 struct bfd_in_memory
*b
;
3888 b
= (struct bfd_in_memory
*) abfd
->iostream
;
3890 if ((sym
->stroff
+ sym
->strsize
) > b
->size
)
3892 bfd_set_error (bfd_error_file_truncated
);
3895 sym
->strtab
= (char *) b
->buffer
+ sym
->stroff
;
3899 /* See PR 21840 for a reproducer. */
3900 if ((sym
->strsize
+ 1) == 0)
3902 if (bfd_seek (abfd
, sym
->stroff
, SEEK_SET
) != 0)
3904 sym
->strtab
= (char *) _bfd_alloc_and_read (abfd
, sym
->strsize
+ 1,
3906 if (sym
->strtab
== NULL
)
3909 /* Zero terminate the string table. */
3910 sym
->strtab
[sym
->strsize
] = 0;
3917 bfd_mach_o_read_symtab_symbols (bfd
*abfd
)
3919 bfd_mach_o_data_struct
*mdata
= bfd_mach_o_get_data (abfd
);
3920 bfd_mach_o_symtab_command
*sym
= mdata
->symtab
;
3925 if (sym
== NULL
|| sym
->nsyms
== 0 || sym
->symbols
)
3926 /* Return now if there are no symbols or if already loaded. */
3929 filesize
= bfd_get_file_size (abfd
);
3932 unsigned int wide
= mach_o_wide_p (&mdata
->header
);
3933 unsigned int symwidth
3934 = wide
? BFD_MACH_O_NLIST_64_SIZE
: BFD_MACH_O_NLIST_SIZE
;
3936 if (sym
->symoff
> filesize
3937 || sym
->nsyms
> (filesize
- sym
->symoff
) / symwidth
)
3939 bfd_set_error (bfd_error_file_truncated
);
3944 if (_bfd_mul_overflow (sym
->nsyms
, sizeof (bfd_mach_o_asymbol
), &amt
)
3945 || (sym
->symbols
= bfd_alloc (abfd
, amt
)) == NULL
)
3947 bfd_set_error (bfd_error_no_memory
);
3952 if (!bfd_mach_o_read_symtab_strtab (abfd
))
3955 for (i
= 0; i
< sym
->nsyms
; i
++)
3956 if (!bfd_mach_o_read_symtab_symbol (abfd
, sym
, &sym
->symbols
[i
], i
))
3962 bfd_release (abfd
, sym
->symbols
);
3963 sym
->symbols
= NULL
;
3969 bfd_mach_o_i386_flavour_string (unsigned int flavour
)
3971 switch ((int) flavour
)
3973 case BFD_MACH_O_x86_THREAD_STATE32
: return "x86_THREAD_STATE32";
3974 case BFD_MACH_O_x86_FLOAT_STATE32
: return "x86_FLOAT_STATE32";
3975 case BFD_MACH_O_x86_EXCEPTION_STATE32
: return "x86_EXCEPTION_STATE32";
3976 case BFD_MACH_O_x86_THREAD_STATE64
: return "x86_THREAD_STATE64";
3977 case BFD_MACH_O_x86_FLOAT_STATE64
: return "x86_FLOAT_STATE64";
3978 case BFD_MACH_O_x86_EXCEPTION_STATE64
: return "x86_EXCEPTION_STATE64";
3979 case BFD_MACH_O_x86_THREAD_STATE
: return "x86_THREAD_STATE";
3980 case BFD_MACH_O_x86_FLOAT_STATE
: return "x86_FLOAT_STATE";
3981 case BFD_MACH_O_x86_EXCEPTION_STATE
: return "x86_EXCEPTION_STATE";
3982 case BFD_MACH_O_x86_DEBUG_STATE32
: return "x86_DEBUG_STATE32";
3983 case BFD_MACH_O_x86_DEBUG_STATE64
: return "x86_DEBUG_STATE64";
3984 case BFD_MACH_O_x86_DEBUG_STATE
: return "x86_DEBUG_STATE";
3985 case BFD_MACH_O_x86_THREAD_STATE_NONE
: return "x86_THREAD_STATE_NONE";
3986 default: return "UNKNOWN";
3991 bfd_mach_o_ppc_flavour_string (unsigned int flavour
)
3993 switch ((int) flavour
)
3995 case BFD_MACH_O_PPC_THREAD_STATE
: return "PPC_THREAD_STATE";
3996 case BFD_MACH_O_PPC_FLOAT_STATE
: return "PPC_FLOAT_STATE";
3997 case BFD_MACH_O_PPC_EXCEPTION_STATE
: return "PPC_EXCEPTION_STATE";
3998 case BFD_MACH_O_PPC_VECTOR_STATE
: return "PPC_VECTOR_STATE";
3999 case BFD_MACH_O_PPC_THREAD_STATE64
: return "PPC_THREAD_STATE64";
4000 case BFD_MACH_O_PPC_EXCEPTION_STATE64
: return "PPC_EXCEPTION_STATE64";
4001 default: return "UNKNOWN";
4005 static unsigned char *
4006 bfd_mach_o_alloc_and_read (bfd
*abfd
, file_ptr filepos
,
4007 size_t size
, size_t extra
)
4009 if (bfd_seek (abfd
, filepos
, SEEK_SET
) != 0)
4011 unsigned char *ret
= _bfd_alloc_and_read (abfd
, size
+ extra
, size
);
4012 if (ret
&& extra
!= 0)
4013 memset (ret
+ size
, 0, extra
);
4018 bfd_mach_o_read_dylinker (bfd
*abfd
, bfd_mach_o_load_command
*command
)
4020 bfd_mach_o_dylinker_command
*cmd
= &command
->command
.dylinker
;
4021 struct mach_o_str_command_external raw
;
4022 unsigned int nameoff
;
4025 if (command
->len
< sizeof (raw
) + 8)
4027 if (bfd_bread (&raw
, sizeof (raw
), abfd
) != sizeof (raw
))
4030 nameoff
= bfd_h_get_32 (abfd
, raw
.str
);
4031 if (nameoff
> command
->len
)
4034 cmd
->name_offset
= nameoff
;
4035 namelen
= command
->len
- nameoff
;
4036 nameoff
+= command
->offset
;
4037 cmd
->name_str
= (char *) bfd_mach_o_alloc_and_read (abfd
, nameoff
,
4039 return cmd
->name_str
!= NULL
;
4043 bfd_mach_o_read_dylib (bfd
*abfd
, bfd_mach_o_load_command
*command
)
4045 bfd_mach_o_data_struct
*mdata
= bfd_mach_o_get_data (abfd
);
4046 bfd_mach_o_dylib_command
*cmd
= &command
->command
.dylib
;
4047 struct mach_o_dylib_command_external raw
;
4048 unsigned int nameoff
;
4052 if (command
->len
< sizeof (raw
) + 8)
4054 switch (command
->type
)
4056 case BFD_MACH_O_LC_LOAD_DYLIB
:
4057 case BFD_MACH_O_LC_LAZY_LOAD_DYLIB
:
4058 case BFD_MACH_O_LC_LOAD_WEAK_DYLIB
:
4059 case BFD_MACH_O_LC_ID_DYLIB
:
4060 case BFD_MACH_O_LC_REEXPORT_DYLIB
:
4061 case BFD_MACH_O_LC_LOAD_UPWARD_DYLIB
:
4068 if (bfd_bread (&raw
, sizeof (raw
), abfd
) != sizeof (raw
))
4071 nameoff
= bfd_h_get_32 (abfd
, raw
.name
);
4072 if (nameoff
> command
->len
)
4074 cmd
->timestamp
= bfd_h_get_32 (abfd
, raw
.timestamp
);
4075 cmd
->current_version
= bfd_h_get_32 (abfd
, raw
.current_version
);
4076 cmd
->compatibility_version
= bfd_h_get_32 (abfd
, raw
.compatibility_version
);
4078 cmd
->name_offset
= command
->offset
+ nameoff
;
4079 namelen
= command
->len
- nameoff
;
4080 pos
= mdata
->hdr_offset
+ cmd
->name_offset
;
4081 cmd
->name_str
= (char *) bfd_mach_o_alloc_and_read (abfd
, pos
, namelen
, 1);
4082 return cmd
->name_str
!= NULL
;
4086 bfd_mach_o_read_prebound_dylib (bfd
*abfd
,
4087 bfd_mach_o_load_command
*command
)
4089 bfd_mach_o_prebound_dylib_command
*cmd
= &command
->command
.prebound_dylib
;
4090 struct mach_o_prebound_dylib_command_external raw
;
4091 unsigned int nameoff
;
4092 unsigned int modoff
;
4093 unsigned int str_len
;
4096 if (command
->len
< sizeof (raw
) + 8)
4098 if (bfd_bread (&raw
, sizeof (raw
), abfd
) != sizeof (raw
))
4101 nameoff
= bfd_h_get_32 (abfd
, raw
.name
);
4102 modoff
= bfd_h_get_32 (abfd
, raw
.linked_modules
);
4103 if (nameoff
> command
->len
|| modoff
> command
->len
)
4106 str_len
= command
->len
- sizeof (raw
);
4107 str
= _bfd_alloc_and_read (abfd
, str_len
, str_len
);
4111 cmd
->name_offset
= command
->offset
+ nameoff
;
4112 cmd
->nmodules
= bfd_h_get_32 (abfd
, raw
.nmodules
);
4113 cmd
->linked_modules_offset
= command
->offset
+ modoff
;
4115 cmd
->name_str
= (char *)str
+ nameoff
- (sizeof (raw
) + BFD_MACH_O_LC_SIZE
);
4116 cmd
->linked_modules
= str
+ modoff
- (sizeof (raw
) + BFD_MACH_O_LC_SIZE
);
4121 bfd_mach_o_read_prebind_cksum (bfd
*abfd
,
4122 bfd_mach_o_load_command
*command
)
4124 bfd_mach_o_prebind_cksum_command
*cmd
= &command
->command
.prebind_cksum
;
4125 struct mach_o_prebind_cksum_command_external raw
;
4127 if (command
->len
< sizeof (raw
) + 8)
4129 if (bfd_bread (&raw
, sizeof (raw
), abfd
) != sizeof (raw
))
4132 cmd
->cksum
= bfd_get_32 (abfd
, raw
.cksum
);
4137 bfd_mach_o_read_twolevel_hints (bfd
*abfd
,
4138 bfd_mach_o_load_command
*command
)
4140 bfd_mach_o_twolevel_hints_command
*cmd
= &command
->command
.twolevel_hints
;
4141 struct mach_o_twolevel_hints_command_external raw
;
4143 if (command
->len
< sizeof (raw
) + 8)
4145 if (bfd_bread (&raw
, sizeof (raw
), abfd
) != sizeof (raw
))
4148 cmd
->offset
= bfd_get_32 (abfd
, raw
.offset
);
4149 cmd
->nhints
= bfd_get_32 (abfd
, raw
.nhints
);
4154 bfd_mach_o_read_fvmlib (bfd
*abfd
, bfd_mach_o_load_command
*command
)
4156 bfd_mach_o_fvmlib_command
*fvm
= &command
->command
.fvmlib
;
4157 struct mach_o_fvmlib_command_external raw
;
4158 unsigned int nameoff
;
4161 if (command
->len
< sizeof (raw
) + 8)
4163 if (bfd_bread (&raw
, sizeof (raw
), abfd
) != sizeof (raw
))
4166 nameoff
= bfd_h_get_32 (abfd
, raw
.name
);
4167 if (nameoff
> command
->len
)
4169 fvm
->minor_version
= bfd_h_get_32 (abfd
, raw
.minor_version
);
4170 fvm
->header_addr
= bfd_h_get_32 (abfd
, raw
.header_addr
);
4172 fvm
->name_offset
= command
->offset
+ nameoff
;
4173 namelen
= command
->len
- nameoff
;
4174 fvm
->name_str
= (char *) bfd_mach_o_alloc_and_read (abfd
, fvm
->name_offset
,
4176 return fvm
->name_str
!= NULL
;
4180 bfd_mach_o_read_thread (bfd
*abfd
, bfd_mach_o_load_command
*command
)
4182 bfd_mach_o_data_struct
*mdata
= bfd_mach_o_get_data (abfd
);
4183 bfd_mach_o_thread_command
*cmd
= &command
->command
.thread
;
4184 unsigned int offset
;
4185 unsigned int nflavours
;
4187 struct mach_o_thread_command_external raw
;
4190 BFD_ASSERT ((command
->type
== BFD_MACH_O_LC_THREAD
)
4191 || (command
->type
== BFD_MACH_O_LC_UNIXTHREAD
));
4193 /* Count the number of threads. */
4196 while (offset
+ sizeof (raw
) <= command
->len
)
4200 if (bfd_seek (abfd
, command
->offset
+ offset
, SEEK_SET
) != 0
4201 || bfd_bread (&raw
, sizeof (raw
), abfd
) != sizeof (raw
))
4204 count
= bfd_h_get_32 (abfd
, raw
.count
);
4205 if (count
> (unsigned) -1 / 4
4206 || command
->len
- (offset
+ sizeof (raw
)) < count
* 4)
4208 offset
+= sizeof (raw
) + count
* 4;
4211 if (nflavours
== 0 || offset
!= command
->len
)
4214 /* Allocate threads. */
4215 if (_bfd_mul_overflow (nflavours
, sizeof (bfd_mach_o_thread_flavour
), &amt
))
4217 bfd_set_error (bfd_error_file_too_big
);
4220 cmd
->flavours
= bfd_alloc (abfd
, amt
);
4221 if (cmd
->flavours
== NULL
)
4223 cmd
->nflavours
= nflavours
;
4227 while (offset
!= command
->len
)
4229 if (bfd_seek (abfd
, command
->offset
+ offset
, SEEK_SET
) != 0
4230 || bfd_bread (&raw
, sizeof (raw
), abfd
) != sizeof (raw
))
4233 cmd
->flavours
[nflavours
].flavour
= bfd_h_get_32 (abfd
, raw
.flavour
);
4234 cmd
->flavours
[nflavours
].offset
= command
->offset
+ offset
+ sizeof (raw
);
4235 cmd
->flavours
[nflavours
].size
= bfd_h_get_32 (abfd
, raw
.count
) * 4;
4236 offset
+= cmd
->flavours
[nflavours
].size
+ sizeof (raw
);
4240 for (i
= 0; i
< nflavours
; i
++)
4245 const char *flavourstr
;
4246 const char *prefix
= "LC_THREAD";
4249 switch (mdata
->header
.cputype
)
4251 case BFD_MACH_O_CPU_TYPE_POWERPC
:
4252 case BFD_MACH_O_CPU_TYPE_POWERPC_64
:
4254 bfd_mach_o_ppc_flavour_string (cmd
->flavours
[i
].flavour
);
4256 case BFD_MACH_O_CPU_TYPE_I386
:
4257 case BFD_MACH_O_CPU_TYPE_X86_64
:
4259 bfd_mach_o_i386_flavour_string (cmd
->flavours
[i
].flavour
);
4262 flavourstr
= "UNKNOWN_ARCHITECTURE";
4266 snamelen
= strlen (prefix
) + 1 + 20 + 1 + strlen (flavourstr
) + 1;
4267 sname
= bfd_alloc (abfd
, snamelen
);
4273 sprintf (sname
, "%s.%s.%u", prefix
, flavourstr
, j
);
4274 if (bfd_get_section_by_name (abfd
, sname
) == NULL
)
4279 bfdsec
= bfd_make_section_with_flags (abfd
, sname
, SEC_HAS_CONTENTS
);
4283 bfdsec
->size
= cmd
->flavours
[i
].size
;
4284 bfdsec
->filepos
= cmd
->flavours
[i
].offset
;
4285 bfdsec
->alignment_power
= 0x0;
4287 cmd
->section
= bfdsec
;
4294 bfd_mach_o_read_dysymtab (bfd
*abfd
, bfd_mach_o_load_command
*command
,
4297 bfd_mach_o_dysymtab_command
*cmd
= &command
->command
.dysymtab
;
4298 bfd_mach_o_data_struct
*mdata
= bfd_mach_o_get_data (abfd
);
4300 BFD_ASSERT (command
->type
== BFD_MACH_O_LC_DYSYMTAB
);
4303 struct mach_o_dysymtab_command_external raw
;
4305 if (command
->len
< sizeof (raw
) + 8)
4307 if (bfd_bread (&raw
, sizeof (raw
), abfd
) != sizeof (raw
))
4310 cmd
->ilocalsym
= bfd_h_get_32 (abfd
, raw
.ilocalsym
);
4311 cmd
->nlocalsym
= bfd_h_get_32 (abfd
, raw
.nlocalsym
);
4312 cmd
->iextdefsym
= bfd_h_get_32 (abfd
, raw
.iextdefsym
);
4313 cmd
->nextdefsym
= bfd_h_get_32 (abfd
, raw
.nextdefsym
);
4314 cmd
->iundefsym
= bfd_h_get_32 (abfd
, raw
.iundefsym
);
4315 cmd
->nundefsym
= bfd_h_get_32 (abfd
, raw
.nundefsym
);
4316 cmd
->tocoff
= bfd_h_get_32 (abfd
, raw
.tocoff
);
4317 cmd
->ntoc
= bfd_h_get_32 (abfd
, raw
.ntoc
);
4318 cmd
->modtaboff
= bfd_h_get_32 (abfd
, raw
.modtaboff
);
4319 cmd
->nmodtab
= bfd_h_get_32 (abfd
, raw
.nmodtab
);
4320 cmd
->extrefsymoff
= bfd_h_get_32 (abfd
, raw
.extrefsymoff
);
4321 cmd
->nextrefsyms
= bfd_h_get_32 (abfd
, raw
.nextrefsyms
);
4322 cmd
->indirectsymoff
= bfd_h_get_32 (abfd
, raw
.indirectsymoff
);
4323 cmd
->nindirectsyms
= bfd_h_get_32 (abfd
, raw
.nindirectsyms
);
4324 cmd
->extreloff
= bfd_h_get_32 (abfd
, raw
.extreloff
);
4325 cmd
->nextrel
= bfd_h_get_32 (abfd
, raw
.nextrel
);
4326 cmd
->locreloff
= bfd_h_get_32 (abfd
, raw
.locreloff
);
4327 cmd
->nlocrel
= bfd_h_get_32 (abfd
, raw
.nlocrel
);
4330 if (cmd
->nmodtab
!= 0)
4333 int wide
= bfd_mach_o_wide_p (abfd
);
4334 unsigned int module_len
= wide
? 56 : 52;
4337 if (cmd
->modtaboff
> filesize
4338 || cmd
->nmodtab
> (filesize
- cmd
->modtaboff
) / module_len
)
4340 bfd_set_error (bfd_error_file_truncated
);
4343 if (_bfd_mul_overflow (cmd
->nmodtab
,
4344 sizeof (bfd_mach_o_dylib_module
), &amt
))
4346 bfd_set_error (bfd_error_file_too_big
);
4349 cmd
->dylib_module
= bfd_alloc (abfd
, amt
);
4350 if (cmd
->dylib_module
== NULL
)
4353 if (bfd_seek (abfd
, cmd
->modtaboff
, SEEK_SET
) != 0)
4356 for (i
= 0; i
< cmd
->nmodtab
; i
++)
4358 bfd_mach_o_dylib_module
*module
= &cmd
->dylib_module
[i
];
4360 unsigned char buf
[56];
4362 if (bfd_bread ((void *) buf
, module_len
, abfd
) != module_len
)
4365 module
->module_name_idx
= bfd_h_get_32 (abfd
, buf
+ 0);
4366 module
->iextdefsym
= bfd_h_get_32 (abfd
, buf
+ 4);
4367 module
->nextdefsym
= bfd_h_get_32 (abfd
, buf
+ 8);
4368 module
->irefsym
= bfd_h_get_32 (abfd
, buf
+ 12);
4369 module
->nrefsym
= bfd_h_get_32 (abfd
, buf
+ 16);
4370 module
->ilocalsym
= bfd_h_get_32 (abfd
, buf
+ 20);
4371 module
->nlocalsym
= bfd_h_get_32 (abfd
, buf
+ 24);
4372 module
->iextrel
= bfd_h_get_32 (abfd
, buf
+ 28);
4373 module
->nextrel
= bfd_h_get_32 (abfd
, buf
+ 32);
4374 v
= bfd_h_get_32 (abfd
, buf
+36);
4375 module
->iinit
= v
& 0xffff;
4376 module
->iterm
= (v
>> 16) & 0xffff;
4377 v
= bfd_h_get_32 (abfd
, buf
+ 40);
4378 module
->ninit
= v
& 0xffff;
4379 module
->nterm
= (v
>> 16) & 0xffff;
4382 module
->objc_module_info_size
= bfd_h_get_32 (abfd
, buf
+ 44);
4383 module
->objc_module_info_addr
= bfd_h_get_64 (abfd
, buf
+ 48);
4387 module
->objc_module_info_addr
= bfd_h_get_32 (abfd
, buf
+ 44);
4388 module
->objc_module_info_size
= bfd_h_get_32 (abfd
, buf
+ 48);
4397 struct mach_o_dylib_table_of_contents_external raw
;
4399 if (cmd
->tocoff
> filesize
4400 || cmd
->ntoc
> (filesize
- cmd
->tocoff
) / sizeof (raw
))
4402 bfd_set_error (bfd_error_file_truncated
);
4405 if (_bfd_mul_overflow (cmd
->ntoc
,
4406 sizeof (bfd_mach_o_dylib_table_of_content
), &amt
))
4408 bfd_set_error (bfd_error_file_too_big
);
4411 cmd
->dylib_toc
= bfd_alloc (abfd
, amt
);
4412 if (cmd
->dylib_toc
== NULL
)
4415 if (bfd_seek (abfd
, cmd
->tocoff
, SEEK_SET
) != 0)
4418 for (i
= 0; i
< cmd
->ntoc
; i
++)
4420 bfd_mach_o_dylib_table_of_content
*toc
= &cmd
->dylib_toc
[i
];
4422 if (bfd_bread (&raw
, sizeof (raw
), abfd
) != sizeof (raw
))
4425 toc
->symbol_index
= bfd_h_get_32 (abfd
, raw
.symbol_index
);
4426 toc
->module_index
= bfd_h_get_32 (abfd
, raw
.module_index
);
4430 if (cmd
->nindirectsyms
!= 0)
4435 if (cmd
->indirectsymoff
> filesize
4436 || cmd
->nindirectsyms
> (filesize
- cmd
->indirectsymoff
) / 4)
4438 bfd_set_error (bfd_error_file_truncated
);
4441 if (_bfd_mul_overflow (cmd
->nindirectsyms
, sizeof (unsigned int), &amt
))
4443 bfd_set_error (bfd_error_file_too_big
);
4446 cmd
->indirect_syms
= bfd_alloc (abfd
, amt
);
4447 if (cmd
->indirect_syms
== NULL
)
4450 if (bfd_seek (abfd
, cmd
->indirectsymoff
, SEEK_SET
) != 0)
4453 for (i
= 0; i
< cmd
->nindirectsyms
; i
++)
4455 unsigned char raw
[4];
4456 unsigned int *is
= &cmd
->indirect_syms
[i
];
4458 if (bfd_bread (raw
, sizeof (raw
), abfd
) != sizeof (raw
))
4461 *is
= bfd_h_get_32 (abfd
, raw
);
4465 if (cmd
->nextrefsyms
!= 0)
4471 if (cmd
->extrefsymoff
> filesize
4472 || cmd
->nextrefsyms
> (filesize
- cmd
->extrefsymoff
) / 4)
4474 bfd_set_error (bfd_error_file_truncated
);
4477 if (_bfd_mul_overflow (cmd
->nextrefsyms
,
4478 sizeof (bfd_mach_o_dylib_reference
), &amt
))
4480 bfd_set_error (bfd_error_file_too_big
);
4483 cmd
->ext_refs
= bfd_alloc (abfd
, amt
);
4484 if (cmd
->ext_refs
== NULL
)
4487 if (bfd_seek (abfd
, cmd
->extrefsymoff
, SEEK_SET
) != 0)
4490 for (i
= 0; i
< cmd
->nextrefsyms
; i
++)
4492 unsigned char raw
[4];
4493 bfd_mach_o_dylib_reference
*ref
= &cmd
->ext_refs
[i
];
4495 if (bfd_bread (raw
, sizeof (raw
), abfd
) != sizeof (raw
))
4498 /* Fields isym and flags are written as bit-fields, thus we need
4499 a specific processing for endianness. */
4500 v
= bfd_h_get_32 (abfd
, raw
);
4501 if (bfd_big_endian (abfd
))
4503 ref
->isym
= (v
>> 8) & 0xffffff;
4504 ref
->flags
= v
& 0xff;
4508 ref
->isym
= v
& 0xffffff;
4509 ref
->flags
= (v
>> 24) & 0xff;
4514 if (mdata
->dysymtab
)
4516 mdata
->dysymtab
= cmd
;
4522 bfd_mach_o_read_symtab (bfd
*abfd
, bfd_mach_o_load_command
*command
,
4525 bfd_mach_o_symtab_command
*symtab
= &command
->command
.symtab
;
4526 bfd_mach_o_data_struct
*mdata
= bfd_mach_o_get_data (abfd
);
4527 struct mach_o_symtab_command_external raw
;
4529 BFD_ASSERT (command
->type
== BFD_MACH_O_LC_SYMTAB
);
4531 if (command
->len
< sizeof (raw
) + 8)
4533 if (bfd_bread (&raw
, sizeof (raw
), abfd
) != sizeof (raw
))
4536 symtab
->symoff
= bfd_h_get_32 (abfd
, raw
.symoff
);
4537 symtab
->nsyms
= bfd_h_get_32 (abfd
, raw
.nsyms
);
4538 symtab
->stroff
= bfd_h_get_32 (abfd
, raw
.stroff
);
4539 symtab
->strsize
= bfd_h_get_32 (abfd
, raw
.strsize
);
4540 symtab
->symbols
= NULL
;
4541 symtab
->strtab
= NULL
;
4543 if (symtab
->symoff
> filesize
4544 || symtab
->nsyms
> (filesize
- symtab
->symoff
) / BFD_MACH_O_NLIST_SIZE
4545 || symtab
->stroff
> filesize
4546 || symtab
->strsize
> filesize
- symtab
->stroff
)
4548 bfd_set_error (bfd_error_file_truncated
);
4552 if (symtab
->nsyms
!= 0)
4553 abfd
->flags
|= HAS_SYMS
;
4557 mdata
->symtab
= symtab
;
4562 bfd_mach_o_read_uuid (bfd
*abfd
, bfd_mach_o_load_command
*command
)
4564 bfd_mach_o_uuid_command
*cmd
= &command
->command
.uuid
;
4566 BFD_ASSERT (command
->type
== BFD_MACH_O_LC_UUID
);
4568 if (command
->len
< 16 + 8)
4570 if (bfd_bread (cmd
->uuid
, 16, abfd
) != 16)
4577 bfd_mach_o_read_linkedit (bfd
*abfd
, bfd_mach_o_load_command
*command
)
4579 bfd_mach_o_linkedit_command
*cmd
= &command
->command
.linkedit
;
4580 struct mach_o_linkedit_data_command_external raw
;
4582 if (command
->len
< sizeof (raw
) + 8)
4584 if (bfd_bread (&raw
, sizeof (raw
), abfd
) != sizeof (raw
))
4587 cmd
->dataoff
= bfd_get_32 (abfd
, raw
.dataoff
);
4588 cmd
->datasize
= bfd_get_32 (abfd
, raw
.datasize
);
4593 bfd_mach_o_read_str (bfd
*abfd
, bfd_mach_o_load_command
*command
)
4595 bfd_mach_o_str_command
*cmd
= &command
->command
.str
;
4596 struct mach_o_str_command_external raw
;
4599 if (command
->len
< sizeof (raw
) + 8)
4601 if (bfd_bread (&raw
, sizeof (raw
), abfd
) != sizeof (raw
))
4604 off
= bfd_get_32 (abfd
, raw
.str
);
4605 if (off
> command
->len
)
4608 cmd
->stroff
= command
->offset
+ off
;
4609 cmd
->str_len
= command
->len
- off
;
4610 cmd
->str
= (char *) bfd_mach_o_alloc_and_read (abfd
, cmd
->stroff
,
4612 return cmd
->str
!= NULL
;
4616 bfd_mach_o_read_dyld_content (bfd
*abfd
, bfd_mach_o_dyld_info_command
*cmd
)
4618 /* Read rebase content. */
4619 if (cmd
->rebase_content
== NULL
&& cmd
->rebase_size
!= 0)
4622 = bfd_mach_o_alloc_and_read (abfd
, cmd
->rebase_off
,
4623 cmd
->rebase_size
, 0);
4624 if (cmd
->rebase_content
== NULL
)
4628 /* Read bind content. */
4629 if (cmd
->bind_content
== NULL
&& cmd
->bind_size
!= 0)
4632 = bfd_mach_o_alloc_and_read (abfd
, cmd
->bind_off
,
4634 if (cmd
->bind_content
== NULL
)
4638 /* Read weak bind content. */
4639 if (cmd
->weak_bind_content
== NULL
&& cmd
->weak_bind_size
!= 0)
4641 cmd
->weak_bind_content
4642 = bfd_mach_o_alloc_and_read (abfd
, cmd
->weak_bind_off
,
4643 cmd
->weak_bind_size
, 0);
4644 if (cmd
->weak_bind_content
== NULL
)
4648 /* Read lazy bind content. */
4649 if (cmd
->lazy_bind_content
== NULL
&& cmd
->lazy_bind_size
!= 0)
4651 cmd
->lazy_bind_content
4652 = bfd_mach_o_alloc_and_read (abfd
, cmd
->lazy_bind_off
,
4653 cmd
->lazy_bind_size
, 0);
4654 if (cmd
->lazy_bind_content
== NULL
)
4658 /* Read export content. */
4659 if (cmd
->export_content
== NULL
&& cmd
->export_size
!= 0)
4662 = bfd_mach_o_alloc_and_read (abfd
, cmd
->export_off
,
4663 cmd
->export_size
, 0);
4664 if (cmd
->export_content
== NULL
)
4672 bfd_mach_o_read_dyld_info (bfd
*abfd
, bfd_mach_o_load_command
*command
)
4674 bfd_mach_o_dyld_info_command
*cmd
= &command
->command
.dyld_info
;
4675 struct mach_o_dyld_info_command_external raw
;
4677 if (command
->len
< sizeof (raw
) + 8)
4679 if (bfd_bread (&raw
, sizeof (raw
), abfd
) != sizeof (raw
))
4682 cmd
->rebase_off
= bfd_get_32 (abfd
, raw
.rebase_off
);
4683 cmd
->rebase_size
= bfd_get_32 (abfd
, raw
.rebase_size
);
4684 cmd
->rebase_content
= NULL
;
4685 cmd
->bind_off
= bfd_get_32 (abfd
, raw
.bind_off
);
4686 cmd
->bind_size
= bfd_get_32 (abfd
, raw
.bind_size
);
4687 cmd
->bind_content
= NULL
;
4688 cmd
->weak_bind_off
= bfd_get_32 (abfd
, raw
.weak_bind_off
);
4689 cmd
->weak_bind_size
= bfd_get_32 (abfd
, raw
.weak_bind_size
);
4690 cmd
->weak_bind_content
= NULL
;
4691 cmd
->lazy_bind_off
= bfd_get_32 (abfd
, raw
.lazy_bind_off
);
4692 cmd
->lazy_bind_size
= bfd_get_32 (abfd
, raw
.lazy_bind_size
);
4693 cmd
->lazy_bind_content
= NULL
;
4694 cmd
->export_off
= bfd_get_32 (abfd
, raw
.export_off
);
4695 cmd
->export_size
= bfd_get_32 (abfd
, raw
.export_size
);
4696 cmd
->export_content
= NULL
;
4701 bfd_mach_o_read_version_min (bfd
*abfd
, bfd_mach_o_load_command
*command
)
4703 bfd_mach_o_version_min_command
*cmd
= &command
->command
.version_min
;
4704 struct mach_o_version_min_command_external raw
;
4706 if (command
->len
< sizeof (raw
) + 8)
4708 if (bfd_bread (&raw
, sizeof (raw
), abfd
) != sizeof (raw
))
4711 cmd
->version
= bfd_get_32 (abfd
, raw
.version
);
4712 cmd
->sdk
= bfd_get_32 (abfd
, raw
.sdk
);
4717 bfd_mach_o_read_encryption_info (bfd
*abfd
, bfd_mach_o_load_command
*command
)
4719 bfd_mach_o_encryption_info_command
*cmd
= &command
->command
.encryption_info
;
4720 struct mach_o_encryption_info_command_external raw
;
4722 if (command
->len
< sizeof (raw
) + 8)
4724 if (bfd_bread (&raw
, sizeof (raw
), abfd
) != sizeof (raw
))
4727 cmd
->cryptoff
= bfd_get_32 (abfd
, raw
.cryptoff
);
4728 cmd
->cryptsize
= bfd_get_32 (abfd
, raw
.cryptsize
);
4729 cmd
->cryptid
= bfd_get_32 (abfd
, raw
.cryptid
);
4734 bfd_mach_o_read_encryption_info_64 (bfd
*abfd
, bfd_mach_o_load_command
*command
)
4736 bfd_mach_o_encryption_info_command
*cmd
= &command
->command
.encryption_info
;
4737 struct mach_o_encryption_info_64_command_external raw
;
4739 if (command
->len
< sizeof (raw
) + 8)
4741 if (bfd_bread (&raw
, sizeof (raw
), abfd
) != sizeof (raw
))
4744 cmd
->cryptoff
= bfd_get_32 (abfd
, raw
.cryptoff
);
4745 cmd
->cryptsize
= bfd_get_32 (abfd
, raw
.cryptsize
);
4746 cmd
->cryptid
= bfd_get_32 (abfd
, raw
.cryptid
);
4751 bfd_mach_o_read_main (bfd
*abfd
, bfd_mach_o_load_command
*command
)
4753 bfd_mach_o_main_command
*cmd
= &command
->command
.main
;
4754 struct mach_o_entry_point_command_external raw
;
4756 if (command
->len
< sizeof (raw
) + 8)
4758 if (bfd_bread (&raw
, sizeof (raw
), abfd
) != sizeof (raw
))
4761 cmd
->entryoff
= bfd_get_64 (abfd
, raw
.entryoff
);
4762 cmd
->stacksize
= bfd_get_64 (abfd
, raw
.stacksize
);
4767 bfd_mach_o_read_source_version (bfd
*abfd
, bfd_mach_o_load_command
*command
)
4769 bfd_mach_o_source_version_command
*cmd
= &command
->command
.source_version
;
4770 struct mach_o_source_version_command_external raw
;
4773 if (command
->len
< sizeof (raw
) + 8)
4775 if (bfd_bread (&raw
, sizeof (raw
), abfd
) != sizeof (raw
))
4778 ver
= bfd_get_64 (abfd
, raw
.version
);
4779 /* Note: we use a serie of shift to avoid shift > 32 (for which gcc
4780 generates warnings) in case of the host doesn't support 64 bit
4782 cmd
->e
= ver
& 0x3ff;
4784 cmd
->d
= ver
& 0x3ff;
4786 cmd
->c
= ver
& 0x3ff;
4788 cmd
->b
= ver
& 0x3ff;
4790 cmd
->a
= ver
& 0xffffff;
4795 bfd_mach_o_read_note (bfd
*abfd
, bfd_mach_o_load_command
*command
)
4797 bfd_mach_o_note_command
*cmd
= &command
->command
.note
;
4798 struct mach_o_note_command_external raw
;
4800 if (command
->len
< sizeof (raw
) + 8)
4802 if (bfd_bread (&raw
, sizeof (raw
), abfd
) != sizeof (raw
))
4805 memcpy (cmd
->data_owner
, raw
.data_owner
, 16);
4806 cmd
->offset
= bfd_get_64 (abfd
, raw
.offset
);
4807 cmd
->size
= bfd_get_64 (abfd
, raw
.size
);
4812 bfd_mach_o_read_build_version (bfd
*abfd
, bfd_mach_o_load_command
*command
)
4814 bfd_mach_o_build_version_command
*cmd
= &command
->command
.build_version
;
4815 struct mach_o_build_version_command_external raw
;
4817 if (command
->len
< sizeof (raw
) + 8)
4819 if (bfd_bread (&raw
, sizeof (raw
), abfd
) != sizeof (raw
))
4822 cmd
->platform
= bfd_get_32 (abfd
, raw
.platform
);
4823 cmd
->minos
= bfd_get_32 (abfd
, raw
.minos
);
4824 cmd
->sdk
= bfd_get_32 (abfd
, raw
.sdk
);
4825 cmd
->ntools
= bfd_get_32 (abfd
, raw
.ntools
);
4830 bfd_mach_o_read_segment (bfd
*abfd
,
4831 bfd_mach_o_load_command
*command
,
4834 bfd_mach_o_segment_command
*seg
= &command
->command
.segment
;
4839 struct mach_o_segment_command_64_external raw
;
4841 BFD_ASSERT (command
->type
== BFD_MACH_O_LC_SEGMENT_64
);
4843 if (command
->len
< sizeof (raw
) + 8)
4845 if (bfd_bread (&raw
, sizeof (raw
), abfd
) != sizeof (raw
))
4848 memcpy (seg
->segname
, raw
.segname
, 16);
4849 seg
->segname
[16] = '\0';
4851 seg
->vmaddr
= bfd_h_get_64 (abfd
, raw
.vmaddr
);
4852 seg
->vmsize
= bfd_h_get_64 (abfd
, raw
.vmsize
);
4853 seg
->fileoff
= bfd_h_get_64 (abfd
, raw
.fileoff
);
4854 seg
->filesize
= bfd_h_get_64 (abfd
, raw
.filesize
);
4855 seg
->maxprot
= bfd_h_get_32 (abfd
, raw
.maxprot
);
4856 seg
->initprot
= bfd_h_get_32 (abfd
, raw
.initprot
);
4857 seg
->nsects
= bfd_h_get_32 (abfd
, raw
.nsects
);
4858 seg
->flags
= bfd_h_get_32 (abfd
, raw
.flags
);
4862 struct mach_o_segment_command_32_external raw
;
4864 BFD_ASSERT (command
->type
== BFD_MACH_O_LC_SEGMENT
);
4866 if (command
->len
< sizeof (raw
) + 8)
4868 if (bfd_bread (&raw
, sizeof (raw
), abfd
) != sizeof (raw
))
4871 memcpy (seg
->segname
, raw
.segname
, 16);
4872 seg
->segname
[16] = '\0';
4874 seg
->vmaddr
= bfd_h_get_32 (abfd
, raw
.vmaddr
);
4875 seg
->vmsize
= bfd_h_get_32 (abfd
, raw
.vmsize
);
4876 seg
->fileoff
= bfd_h_get_32 (abfd
, raw
.fileoff
);
4877 seg
->filesize
= bfd_h_get_32 (abfd
, raw
.filesize
);
4878 seg
->maxprot
= bfd_h_get_32 (abfd
, raw
.maxprot
);
4879 seg
->initprot
= bfd_h_get_32 (abfd
, raw
.initprot
);
4880 seg
->nsects
= bfd_h_get_32 (abfd
, raw
.nsects
);
4881 seg
->flags
= bfd_h_get_32 (abfd
, raw
.flags
);
4883 seg
->sect_head
= NULL
;
4884 seg
->sect_tail
= NULL
;
4886 for (i
= 0; i
< seg
->nsects
; i
++)
4890 sec
= bfd_mach_o_read_section (abfd
, seg
->initprot
, wide
);
4894 bfd_mach_o_append_section_to_segment
4895 (seg
, bfd_mach_o_get_mach_o_section (sec
));
4902 bfd_mach_o_read_segment_32 (bfd
*abfd
, bfd_mach_o_load_command
*command
)
4904 return bfd_mach_o_read_segment (abfd
, command
, 0);
4908 bfd_mach_o_read_segment_64 (bfd
*abfd
, bfd_mach_o_load_command
*command
)
4910 return bfd_mach_o_read_segment (abfd
, command
, 1);
4914 bfd_mach_o_read_command (bfd
*abfd
, bfd_mach_o_load_command
*command
,
4917 bfd_mach_o_data_struct
*mdata
= bfd_mach_o_get_data (abfd
);
4918 struct mach_o_load_command_external raw
;
4921 /* Read command type and length. */
4922 if (bfd_seek (abfd
, mdata
->hdr_offset
+ command
->offset
, SEEK_SET
) != 0
4923 || bfd_bread (&raw
, BFD_MACH_O_LC_SIZE
, abfd
) != BFD_MACH_O_LC_SIZE
)
4926 cmd
= bfd_h_get_32 (abfd
, raw
.cmd
);
4927 command
->type
= cmd
& ~BFD_MACH_O_LC_REQ_DYLD
;
4928 command
->type_required
= (cmd
& BFD_MACH_O_LC_REQ_DYLD
) != 0;
4929 command
->len
= bfd_h_get_32 (abfd
, raw
.cmdsize
);
4930 if (command
->len
< 8 || command
->len
% 4 != 0)
4933 switch (command
->type
)
4935 case BFD_MACH_O_LC_SEGMENT
:
4936 if (!bfd_mach_o_read_segment_32 (abfd
, command
))
4939 case BFD_MACH_O_LC_SEGMENT_64
:
4940 if (!bfd_mach_o_read_segment_64 (abfd
, command
))
4943 case BFD_MACH_O_LC_SYMTAB
:
4944 if (!bfd_mach_o_read_symtab (abfd
, command
, filesize
))
4947 case BFD_MACH_O_LC_SYMSEG
:
4949 case BFD_MACH_O_LC_THREAD
:
4950 case BFD_MACH_O_LC_UNIXTHREAD
:
4951 if (!bfd_mach_o_read_thread (abfd
, command
))
4954 case BFD_MACH_O_LC_LOAD_DYLINKER
:
4955 case BFD_MACH_O_LC_ID_DYLINKER
:
4956 case BFD_MACH_O_LC_DYLD_ENVIRONMENT
:
4957 if (!bfd_mach_o_read_dylinker (abfd
, command
))
4960 case BFD_MACH_O_LC_LOAD_DYLIB
:
4961 case BFD_MACH_O_LC_LAZY_LOAD_DYLIB
:
4962 case BFD_MACH_O_LC_ID_DYLIB
:
4963 case BFD_MACH_O_LC_LOAD_WEAK_DYLIB
:
4964 case BFD_MACH_O_LC_REEXPORT_DYLIB
:
4965 case BFD_MACH_O_LC_LOAD_UPWARD_DYLIB
:
4966 if (!bfd_mach_o_read_dylib (abfd
, command
))
4969 case BFD_MACH_O_LC_PREBOUND_DYLIB
:
4970 if (!bfd_mach_o_read_prebound_dylib (abfd
, command
))
4973 case BFD_MACH_O_LC_LOADFVMLIB
:
4974 case BFD_MACH_O_LC_IDFVMLIB
:
4975 if (!bfd_mach_o_read_fvmlib (abfd
, command
))
4978 case BFD_MACH_O_LC_IDENT
:
4979 case BFD_MACH_O_LC_FVMFILE
:
4980 case BFD_MACH_O_LC_PREPAGE
:
4981 case BFD_MACH_O_LC_ROUTINES
:
4982 case BFD_MACH_O_LC_ROUTINES_64
:
4984 case BFD_MACH_O_LC_SUB_FRAMEWORK
:
4985 case BFD_MACH_O_LC_SUB_UMBRELLA
:
4986 case BFD_MACH_O_LC_SUB_LIBRARY
:
4987 case BFD_MACH_O_LC_SUB_CLIENT
:
4988 case BFD_MACH_O_LC_RPATH
:
4989 if (!bfd_mach_o_read_str (abfd
, command
))
4992 case BFD_MACH_O_LC_DYSYMTAB
:
4993 if (!bfd_mach_o_read_dysymtab (abfd
, command
, filesize
))
4996 case BFD_MACH_O_LC_PREBIND_CKSUM
:
4997 if (!bfd_mach_o_read_prebind_cksum (abfd
, command
))
5000 case BFD_MACH_O_LC_TWOLEVEL_HINTS
:
5001 if (!bfd_mach_o_read_twolevel_hints (abfd
, command
))
5004 case BFD_MACH_O_LC_UUID
:
5005 if (!bfd_mach_o_read_uuid (abfd
, command
))
5008 case BFD_MACH_O_LC_CODE_SIGNATURE
:
5009 case BFD_MACH_O_LC_SEGMENT_SPLIT_INFO
:
5010 case BFD_MACH_O_LC_FUNCTION_STARTS
:
5011 case BFD_MACH_O_LC_DATA_IN_CODE
:
5012 case BFD_MACH_O_LC_DYLIB_CODE_SIGN_DRS
:
5013 case BFD_MACH_O_LC_LINKER_OPTIMIZATION_HINT
:
5014 case BFD_MACH_O_LC_DYLD_EXPORTS_TRIE
:
5015 case BFD_MACH_O_LC_DYLD_CHAINED_FIXUPS
:
5016 if (!bfd_mach_o_read_linkedit (abfd
, command
))
5019 case BFD_MACH_O_LC_ENCRYPTION_INFO
:
5020 if (!bfd_mach_o_read_encryption_info (abfd
, command
))
5023 case BFD_MACH_O_LC_ENCRYPTION_INFO_64
:
5024 if (!bfd_mach_o_read_encryption_info_64 (abfd
, command
))
5027 case BFD_MACH_O_LC_DYLD_INFO
:
5028 if (!bfd_mach_o_read_dyld_info (abfd
, command
))
5031 case BFD_MACH_O_LC_VERSION_MIN_MACOSX
:
5032 case BFD_MACH_O_LC_VERSION_MIN_IPHONEOS
:
5033 case BFD_MACH_O_LC_VERSION_MIN_WATCHOS
:
5034 case BFD_MACH_O_LC_VERSION_MIN_TVOS
:
5035 if (!bfd_mach_o_read_version_min (abfd
, command
))
5038 case BFD_MACH_O_LC_MAIN
:
5039 if (!bfd_mach_o_read_main (abfd
, command
))
5042 case BFD_MACH_O_LC_SOURCE_VERSION
:
5043 if (!bfd_mach_o_read_source_version (abfd
, command
))
5046 case BFD_MACH_O_LC_LINKER_OPTIONS
:
5048 case BFD_MACH_O_LC_NOTE
:
5049 if (!bfd_mach_o_read_note (abfd
, command
))
5052 case BFD_MACH_O_LC_BUILD_VERSION
:
5053 if (!bfd_mach_o_read_build_version (abfd
, command
))
5058 _bfd_error_handler (_("%pB: unknown load command %#x"),
5059 abfd
, command
->type
);
5067 bfd_mach_o_flatten_sections (bfd
*abfd
)
5069 bfd_mach_o_data_struct
*mdata
= bfd_mach_o_get_data (abfd
);
5070 bfd_mach_o_load_command
*cmd
;
5074 /* Count total number of sections. */
5077 for (cmd
= mdata
->first_command
; cmd
!= NULL
; cmd
= cmd
->next
)
5079 if (cmd
->type
== BFD_MACH_O_LC_SEGMENT
5080 || cmd
->type
== BFD_MACH_O_LC_SEGMENT_64
)
5082 bfd_mach_o_segment_command
*seg
= &cmd
->command
.segment
;
5084 mdata
->nsects
+= seg
->nsects
;
5088 /* Allocate sections array. */
5089 if (_bfd_mul_overflow (mdata
->nsects
, sizeof (bfd_mach_o_section
*), &amt
))
5091 bfd_set_error (bfd_error_file_too_big
);
5094 mdata
->sections
= bfd_alloc (abfd
, amt
);
5095 if (mdata
->sections
== NULL
&& mdata
->nsects
!= 0)
5098 /* Fill the array. */
5101 for (cmd
= mdata
->first_command
; cmd
!= NULL
; cmd
= cmd
->next
)
5103 if (cmd
->type
== BFD_MACH_O_LC_SEGMENT
5104 || cmd
->type
== BFD_MACH_O_LC_SEGMENT_64
)
5106 bfd_mach_o_segment_command
*seg
= &cmd
->command
.segment
;
5107 bfd_mach_o_section
*sec
;
5109 BFD_ASSERT (csect
+ seg
->nsects
<= mdata
->nsects
);
5111 for (sec
= seg
->sect_head
; sec
!= NULL
; sec
= sec
->next
)
5112 mdata
->sections
[csect
++] = sec
;
5119 bfd_mach_o_scan_start_address (bfd
*abfd
)
5121 bfd_mach_o_data_struct
*mdata
= bfd_mach_o_get_data (abfd
);
5122 bfd_mach_o_thread_command
*thr
= NULL
;
5123 bfd_mach_o_load_command
*cmd
;
5126 for (cmd
= mdata
->first_command
; cmd
!= NULL
; cmd
= cmd
->next
)
5127 if (cmd
->type
== BFD_MACH_O_LC_THREAD
5128 || cmd
->type
== BFD_MACH_O_LC_UNIXTHREAD
)
5130 thr
= &cmd
->command
.thread
;
5133 else if (cmd
->type
== BFD_MACH_O_LC_MAIN
&& mdata
->nsects
> 1)
5135 bfd_mach_o_main_command
*main_cmd
= &cmd
->command
.main
;
5136 bfd_mach_o_section
*text_sect
= mdata
->sections
[0];
5140 abfd
->start_address
= main_cmd
->entryoff
5141 + (text_sect
->addr
- text_sect
->offset
);
5146 /* An object file has no start address, so do not fail if not found. */
5150 /* FIXME: create a subtarget hook ? */
5151 for (i
= 0; i
< thr
->nflavours
; i
++)
5153 if ((mdata
->header
.cputype
== BFD_MACH_O_CPU_TYPE_I386
)
5154 && (thr
->flavours
[i
].flavour
== BFD_MACH_O_x86_THREAD_STATE32
))
5156 unsigned char buf
[4];
5158 if (bfd_seek (abfd
, thr
->flavours
[i
].offset
+ 40, SEEK_SET
) != 0
5159 || bfd_bread (buf
, 4, abfd
) != 4)
5162 abfd
->start_address
= bfd_h_get_32 (abfd
, buf
);
5164 else if ((mdata
->header
.cputype
== BFD_MACH_O_CPU_TYPE_POWERPC
)
5165 && (thr
->flavours
[i
].flavour
== BFD_MACH_O_PPC_THREAD_STATE
))
5167 unsigned char buf
[4];
5169 if (bfd_seek (abfd
, thr
->flavours
[i
].offset
+ 0, SEEK_SET
) != 0
5170 || bfd_bread (buf
, 4, abfd
) != 4)
5173 abfd
->start_address
= bfd_h_get_32 (abfd
, buf
);
5175 else if ((mdata
->header
.cputype
== BFD_MACH_O_CPU_TYPE_POWERPC_64
)
5176 && (thr
->flavours
[i
].flavour
== BFD_MACH_O_PPC_THREAD_STATE64
))
5178 unsigned char buf
[8];
5180 if (bfd_seek (abfd
, thr
->flavours
[i
].offset
+ 0, SEEK_SET
) != 0
5181 || bfd_bread (buf
, 8, abfd
) != 8)
5184 abfd
->start_address
= bfd_h_get_64 (abfd
, buf
);
5186 else if ((mdata
->header
.cputype
== BFD_MACH_O_CPU_TYPE_X86_64
)
5187 && (thr
->flavours
[i
].flavour
== BFD_MACH_O_x86_THREAD_STATE64
))
5189 unsigned char buf
[8];
5191 if (bfd_seek (abfd
, thr
->flavours
[i
].offset
+ (16 * 8), SEEK_SET
) != 0
5192 || bfd_bread (buf
, 8, abfd
) != 8)
5195 abfd
->start_address
= bfd_h_get_64 (abfd
, buf
);
5203 bfd_mach_o_set_arch_mach (bfd
*abfd
,
5204 enum bfd_architecture arch
,
5205 unsigned long machine
)
5207 bfd_mach_o_backend_data
*bed
= bfd_mach_o_get_backend_data (abfd
);
5209 /* If this isn't the right architecture for this backend, and this
5210 isn't the generic backend, fail. */
5211 if (arch
!= bed
->arch
5212 && arch
!= bfd_arch_unknown
5213 && bed
->arch
!= bfd_arch_unknown
)
5216 return bfd_default_set_arch_mach (abfd
, arch
, machine
);
5220 bfd_mach_o_scan (bfd
*abfd
,
5221 bfd_mach_o_header
*header
,
5222 bfd_mach_o_data_struct
*mdata
)
5225 enum bfd_architecture cpu_type
;
5226 unsigned long cpu_subtype
;
5227 unsigned int hdrsize
;
5229 hdrsize
= mach_o_wide_p (header
) ?
5230 BFD_MACH_O_HEADER_64_SIZE
: BFD_MACH_O_HEADER_SIZE
;
5232 mdata
->header
= *header
;
5234 abfd
->flags
= abfd
->flags
& BFD_IN_MEMORY
;
5235 switch (header
->filetype
)
5237 case BFD_MACH_O_MH_OBJECT
:
5238 abfd
->flags
|= HAS_RELOC
;
5240 case BFD_MACH_O_MH_EXECUTE
:
5241 abfd
->flags
|= EXEC_P
;
5243 case BFD_MACH_O_MH_DYLIB
:
5244 case BFD_MACH_O_MH_BUNDLE
:
5245 abfd
->flags
|= DYNAMIC
;
5249 abfd
->tdata
.mach_o_data
= mdata
;
5251 bfd_mach_o_convert_architecture (header
->cputype
, header
->cpusubtype
,
5252 &cpu_type
, &cpu_subtype
);
5253 if (cpu_type
== bfd_arch_unknown
)
5256 /* xgettext:c-format */
5257 (_("bfd_mach_o_scan: unknown architecture 0x%lx/0x%lx"),
5258 header
->cputype
, header
->cpusubtype
);
5262 bfd_set_arch_mach (abfd
, cpu_type
, cpu_subtype
);
5264 if (header
->ncmds
!= 0)
5266 bfd_mach_o_load_command
*cmd
;
5268 ufile_ptr filesize
= bfd_get_file_size (abfd
);
5271 filesize
= (ufile_ptr
) -1;
5273 mdata
->first_command
= NULL
;
5274 mdata
->last_command
= NULL
;
5276 if (header
->ncmds
> (filesize
- hdrsize
) / BFD_MACH_O_LC_SIZE
)
5278 bfd_set_error (bfd_error_file_truncated
);
5281 if (_bfd_mul_overflow (header
->ncmds
,
5282 sizeof (bfd_mach_o_load_command
), &amt
))
5284 bfd_set_error (bfd_error_file_too_big
);
5287 cmd
= bfd_alloc (abfd
, amt
);
5291 for (i
= 0; i
< header
->ncmds
; i
++)
5293 bfd_mach_o_load_command
*cur
= &cmd
[i
];
5295 bfd_mach_o_append_command (abfd
, cur
);
5298 cur
->offset
= hdrsize
;
5301 bfd_mach_o_load_command
*prev
= &cmd
[i
- 1];
5302 cur
->offset
= prev
->offset
+ prev
->len
;
5305 if (!bfd_mach_o_read_command (abfd
, cur
, filesize
))
5310 /* Sections should be flatten before scanning start address. */
5311 if (!bfd_mach_o_flatten_sections (abfd
))
5313 if (!bfd_mach_o_scan_start_address (abfd
))
5320 bfd_mach_o_mkobject_init (bfd
*abfd
)
5322 bfd_mach_o_data_struct
*mdata
= NULL
;
5324 mdata
= bfd_zalloc (abfd
, sizeof (bfd_mach_o_data_struct
));
5327 abfd
->tdata
.mach_o_data
= mdata
;
5329 mdata
->header
.magic
= 0;
5330 mdata
->header
.cputype
= 0;
5331 mdata
->header
.cpusubtype
= 0;
5332 mdata
->header
.filetype
= 0;
5333 mdata
->header
.ncmds
= 0;
5334 mdata
->header
.sizeofcmds
= 0;
5335 mdata
->header
.flags
= 0;
5336 mdata
->header
.byteorder
= BFD_ENDIAN_UNKNOWN
;
5337 mdata
->first_command
= NULL
;
5338 mdata
->last_command
= NULL
;
5340 mdata
->sections
= NULL
;
5341 mdata
->dyn_reloc_cache
= NULL
;
5347 bfd_mach_o_gen_mkobject (bfd
*abfd
)
5349 bfd_mach_o_data_struct
*mdata
;
5351 if (!bfd_mach_o_mkobject_init (abfd
))
5354 mdata
= bfd_mach_o_get_data (abfd
);
5355 mdata
->header
.magic
= BFD_MACH_O_MH_MAGIC
;
5356 mdata
->header
.cputype
= 0;
5357 mdata
->header
.cpusubtype
= 0;
5358 mdata
->header
.byteorder
= abfd
->xvec
->byteorder
;
5359 mdata
->header
.version
= 1;
5365 bfd_mach_o_header_p (bfd
*abfd
,
5367 bfd_mach_o_filetype file_type
,
5368 bfd_mach_o_cpu_type cpu_type
)
5370 bfd_mach_o_header header
;
5371 bfd_mach_o_data_struct
*mdata
;
5373 if (!bfd_mach_o_read_header (abfd
, hdr_off
, &header
))
5376 if (! (header
.byteorder
== BFD_ENDIAN_BIG
5377 || header
.byteorder
== BFD_ENDIAN_LITTLE
))
5379 _bfd_error_handler (_("unknown header byte-order value %#x"),
5384 if (! ((header
.byteorder
== BFD_ENDIAN_BIG
5385 && abfd
->xvec
->byteorder
== BFD_ENDIAN_BIG
5386 && abfd
->xvec
->header_byteorder
== BFD_ENDIAN_BIG
)
5387 || (header
.byteorder
== BFD_ENDIAN_LITTLE
5388 && abfd
->xvec
->byteorder
== BFD_ENDIAN_LITTLE
5389 && abfd
->xvec
->header_byteorder
== BFD_ENDIAN_LITTLE
)))
5392 /* Check cputype and filetype.
5393 In case of wildcard, do not accept magics that are handled by existing
5397 if (header
.cputype
!= cpu_type
)
5403 /* Do not recognize 64 architectures if not configured for 64bit targets.
5404 This could happen only for generic targets. */
5405 if (mach_o_wide_p (&header
))
5412 if (header
.filetype
!= file_type
)
5417 switch (header
.filetype
)
5419 case BFD_MACH_O_MH_CORE
:
5420 /* Handled by core_p */
5427 mdata
= (bfd_mach_o_data_struct
*) bfd_zalloc (abfd
, sizeof (*mdata
));
5430 mdata
->hdr_offset
= hdr_off
;
5432 if (!bfd_mach_o_scan (abfd
, &header
, mdata
))
5435 return _bfd_no_cleanup
;
5438 bfd_set_error (bfd_error_wrong_format
);
5445 bfd_mach_o_gen_object_p (bfd
*abfd
)
5447 return bfd_mach_o_header_p (abfd
, 0, 0, 0);
5451 bfd_mach_o_gen_core_p (bfd
*abfd
)
5453 return bfd_mach_o_header_p (abfd
, 0, BFD_MACH_O_MH_CORE
, 0);
5456 /* Return the base address of ABFD, ie the address at which the image is
5457 mapped. The possible initial pagezero is ignored. */
5460 bfd_mach_o_get_base_address (bfd
*abfd
)
5462 bfd_mach_o_data_struct
*mdata
;
5463 bfd_mach_o_load_command
*cmd
;
5465 /* Check for Mach-O. */
5466 if (!bfd_mach_o_valid (abfd
))
5468 mdata
= bfd_mach_o_get_data (abfd
);
5470 for (cmd
= mdata
->first_command
; cmd
!= NULL
; cmd
= cmd
->next
)
5472 if ((cmd
->type
== BFD_MACH_O_LC_SEGMENT
5473 || cmd
->type
== BFD_MACH_O_LC_SEGMENT_64
))
5475 struct bfd_mach_o_segment_command
*segcmd
= &cmd
->command
.segment
;
5477 if (segcmd
->initprot
!= 0)
5478 return segcmd
->vmaddr
;
5484 typedef struct mach_o_fat_archentry
5486 unsigned long cputype
;
5487 unsigned long cpusubtype
;
5488 unsigned long offset
;
5490 unsigned long align
;
5491 } mach_o_fat_archentry
;
5493 typedef struct mach_o_fat_data_struct
5495 unsigned long magic
;
5496 unsigned long nfat_arch
;
5497 mach_o_fat_archentry
*archentries
;
5498 } mach_o_fat_data_struct
;
5500 /* Check for overlapping archive elements. Note that we can't allow
5501 multiple elements at the same offset even if one is empty, because
5502 bfd_mach_o_fat_openr_next_archived_file assume distinct offsets. */
5504 overlap_previous (const mach_o_fat_archentry
*elt
, unsigned long i
)
5506 unsigned long j
= i
;
5508 if (elt
[i
].offset
== elt
[j
].offset
5509 || (elt
[i
].offset
> elt
[j
].offset
5510 ? elt
[i
].offset
- elt
[j
].offset
< elt
[j
].size
5511 : elt
[j
].offset
- elt
[i
].offset
< elt
[i
].size
))
5517 bfd_mach_o_fat_archive_p (bfd
*abfd
)
5519 mach_o_fat_data_struct
*adata
= NULL
;
5520 struct mach_o_fat_header_external hdr
;
5525 if (bfd_seek (abfd
, 0, SEEK_SET
) != 0
5526 || bfd_bread (&hdr
, sizeof (hdr
), abfd
) != sizeof (hdr
))
5529 adata
= bfd_alloc (abfd
, sizeof (mach_o_fat_data_struct
));
5533 adata
->magic
= bfd_getb32 (hdr
.magic
);
5534 adata
->nfat_arch
= bfd_getb32 (hdr
.nfat_arch
);
5535 if (adata
->magic
!= 0xcafebabe)
5537 /* Avoid matching Java bytecode files, which have the same magic number.
5538 In the Java bytecode file format this field contains the JVM version,
5539 which starts at 43.0. */
5540 if (adata
->nfat_arch
> 30)
5543 if (_bfd_mul_overflow (adata
->nfat_arch
,
5544 sizeof (mach_o_fat_archentry
), &amt
))
5546 bfd_set_error (bfd_error_file_too_big
);
5549 adata
->archentries
= bfd_alloc (abfd
, amt
);
5550 if (adata
->archentries
== NULL
)
5553 filesize
= bfd_get_file_size (abfd
);
5554 for (i
= 0; i
< adata
->nfat_arch
; i
++)
5556 struct mach_o_fat_arch_external arch
;
5557 if (bfd_bread (&arch
, sizeof (arch
), abfd
) != sizeof (arch
))
5559 adata
->archentries
[i
].cputype
= bfd_getb32 (arch
.cputype
);
5560 adata
->archentries
[i
].cpusubtype
= bfd_getb32 (arch
.cpusubtype
);
5561 adata
->archentries
[i
].offset
= bfd_getb32 (arch
.offset
);
5562 adata
->archentries
[i
].size
= bfd_getb32 (arch
.size
);
5563 adata
->archentries
[i
].align
= bfd_getb32 (arch
.align
);
5565 && (adata
->archentries
[i
].offset
> filesize
5566 || (adata
->archentries
[i
].size
5567 > filesize
- adata
->archentries
[i
].offset
)))
5568 || (adata
->archentries
[i
].offset
5569 < sizeof (hdr
) + adata
->nfat_arch
* sizeof (arch
))
5570 || overlap_previous (adata
->archentries
, i
))
5572 bfd_release (abfd
, adata
);
5573 bfd_set_error (bfd_error_malformed_archive
);
5578 abfd
->tdata
.mach_o_fat_data
= adata
;
5580 return _bfd_no_cleanup
;
5584 bfd_release (abfd
, adata
);
5585 bfd_set_error (bfd_error_wrong_format
);
5589 /* Set the filename for a fat binary member ABFD, whose bfd architecture is
5590 ARCH_TYPE/ARCH_SUBTYPE and corresponding entry in header is ENTRY.
5591 Set arelt_data and origin fields too. */
5594 bfd_mach_o_fat_member_init (bfd
*abfd
,
5595 enum bfd_architecture arch_type
,
5596 unsigned long arch_subtype
,
5597 mach_o_fat_archentry
*entry
)
5599 struct areltdata
*areltdata
;
5600 /* Create the member filename. Use ARCH_NAME. */
5601 const bfd_arch_info_type
*ap
= bfd_lookup_arch (arch_type
, arch_subtype
);
5602 const char *filename
;
5606 /* Use the architecture name if known. */
5607 filename
= bfd_set_filename (abfd
, ap
->printable_name
);
5611 /* Forge a uniq id. */
5612 char buf
[2 + 8 + 1 + 2 + 8 + 1];
5613 snprintf (buf
, sizeof (buf
), "0x%lx-0x%lx",
5614 entry
->cputype
, entry
->cpusubtype
);
5615 filename
= bfd_set_filename (abfd
, buf
);
5620 areltdata
= bfd_zmalloc (sizeof (struct areltdata
));
5621 if (areltdata
== NULL
)
5623 areltdata
->parsed_size
= entry
->size
;
5624 abfd
->arelt_data
= areltdata
;
5625 abfd
->iostream
= NULL
;
5626 abfd
->origin
= entry
->offset
;
5631 bfd_mach_o_fat_openr_next_archived_file (bfd
*archive
, bfd
*prev
)
5633 mach_o_fat_data_struct
*adata
;
5634 mach_o_fat_archentry
*entry
= NULL
;
5637 enum bfd_architecture arch_type
;
5638 unsigned long arch_subtype
;
5640 adata
= (mach_o_fat_data_struct
*) archive
->tdata
.mach_o_fat_data
;
5641 BFD_ASSERT (adata
!= NULL
);
5643 /* Find index of previous entry. */
5646 /* Start at first one. */
5651 /* Find index of PREV. */
5652 for (i
= 0; i
< adata
->nfat_arch
; i
++)
5654 if (adata
->archentries
[i
].offset
== prev
->origin
)
5658 if (i
== adata
->nfat_arch
)
5661 bfd_set_error (bfd_error_bad_value
);
5665 /* Get next entry. */
5669 if (i
>= adata
->nfat_arch
)
5671 bfd_set_error (bfd_error_no_more_archived_files
);
5675 entry
= &adata
->archentries
[i
];
5676 nbfd
= _bfd_new_bfd_contained_in (archive
);
5680 bfd_mach_o_convert_architecture (entry
->cputype
, entry
->cpusubtype
,
5681 &arch_type
, &arch_subtype
);
5683 if (!bfd_mach_o_fat_member_init (nbfd
, arch_type
, arch_subtype
, entry
))
5689 bfd_set_arch_mach (nbfd
, arch_type
, arch_subtype
);
5694 /* Analogous to stat call. */
5697 bfd_mach_o_fat_stat_arch_elt (bfd
*abfd
, struct stat
*buf
)
5699 if (abfd
->arelt_data
== NULL
)
5701 bfd_set_error (bfd_error_invalid_operation
);
5708 buf
->st_mode
= 0644;
5709 buf
->st_size
= arelt_size (abfd
);
5714 /* If ABFD format is FORMAT and architecture is ARCH, return it.
5715 If ABFD is a fat image containing a member that corresponds to FORMAT
5716 and ARCH, returns it.
5717 In other case, returns NULL.
5718 This function allows transparent uses of fat images. */
5721 bfd_mach_o_fat_extract (bfd
*abfd
,
5723 const bfd_arch_info_type
*arch
)
5726 mach_o_fat_data_struct
*adata
;
5729 if (bfd_check_format (abfd
, format
))
5731 if (bfd_get_arch_info (abfd
) == arch
)
5735 if (!bfd_check_format (abfd
, bfd_archive
)
5736 || abfd
->xvec
!= &mach_o_fat_vec
)
5739 /* This is a Mach-O fat image. */
5740 adata
= (mach_o_fat_data_struct
*) abfd
->tdata
.mach_o_fat_data
;
5741 BFD_ASSERT (adata
!= NULL
);
5743 for (i
= 0; i
< adata
->nfat_arch
; i
++)
5745 struct mach_o_fat_archentry
*e
= &adata
->archentries
[i
];
5746 enum bfd_architecture cpu_type
;
5747 unsigned long cpu_subtype
;
5749 bfd_mach_o_convert_architecture (e
->cputype
, e
->cpusubtype
,
5750 &cpu_type
, &cpu_subtype
);
5751 if (cpu_type
!= arch
->arch
|| cpu_subtype
!= arch
->mach
)
5754 /* The architecture is found. */
5755 res
= _bfd_new_bfd_contained_in (abfd
);
5759 if (bfd_mach_o_fat_member_init (res
, cpu_type
, cpu_subtype
, e
)
5760 && bfd_check_format (res
, format
))
5762 BFD_ASSERT (bfd_get_arch_info (res
) == arch
);
5773 bfd_mach_o_fat_close_and_cleanup (bfd
*abfd
)
5775 _bfd_unlink_from_archive_parent (abfd
);
5780 bfd_mach_o_lookup_command (bfd
*abfd
,
5781 bfd_mach_o_load_command_type type
,
5782 bfd_mach_o_load_command
**mcommand
)
5784 struct mach_o_data_struct
*mdata
= bfd_mach_o_get_data (abfd
);
5785 struct bfd_mach_o_load_command
*cmd
;
5788 BFD_ASSERT (mdata
!= NULL
);
5789 BFD_ASSERT (mcommand
!= NULL
);
5792 for (cmd
= mdata
->first_command
; cmd
!= NULL
; cmd
= cmd
->next
)
5794 if (cmd
->type
!= type
)
5806 bfd_mach_o_stack_addr (enum bfd_mach_o_cpu_type type
)
5810 case BFD_MACH_O_CPU_TYPE_MC680x0
:
5812 case BFD_MACH_O_CPU_TYPE_POWERPC
:
5814 case BFD_MACH_O_CPU_TYPE_I386
:
5816 case BFD_MACH_O_CPU_TYPE_SPARC
:
5818 case BFD_MACH_O_CPU_TYPE_HPPA
:
5819 return 0xc0000000 - 0x04000000;
5825 /* The following two tables should be kept, as far as possible, in order of
5826 most frequently used entries to optimize their use from gas. */
5828 const bfd_mach_o_xlat_name bfd_mach_o_section_type_name
[] =
5830 { "regular", BFD_MACH_O_S_REGULAR
},
5831 { "coalesced", BFD_MACH_O_S_COALESCED
},
5832 { "zerofill", BFD_MACH_O_S_ZEROFILL
},
5833 { "cstring_literals", BFD_MACH_O_S_CSTRING_LITERALS
},
5834 { "4byte_literals", BFD_MACH_O_S_4BYTE_LITERALS
},
5835 { "8byte_literals", BFD_MACH_O_S_8BYTE_LITERALS
},
5836 { "16byte_literals", BFD_MACH_O_S_16BYTE_LITERALS
},
5837 { "literal_pointers", BFD_MACH_O_S_LITERAL_POINTERS
},
5838 { "mod_init_func_pointers", BFD_MACH_O_S_MOD_INIT_FUNC_POINTERS
},
5839 { "mod_fini_func_pointers", BFD_MACH_O_S_MOD_FINI_FUNC_POINTERS
},
5840 { "gb_zerofill", BFD_MACH_O_S_GB_ZEROFILL
},
5841 { "interposing", BFD_MACH_O_S_INTERPOSING
},
5842 { "dtrace_dof", BFD_MACH_O_S_DTRACE_DOF
},
5843 { "non_lazy_symbol_pointers", BFD_MACH_O_S_NON_LAZY_SYMBOL_POINTERS
},
5844 { "lazy_symbol_pointers", BFD_MACH_O_S_LAZY_SYMBOL_POINTERS
},
5845 { "symbol_stubs", BFD_MACH_O_S_SYMBOL_STUBS
},
5846 { "lazy_dylib_symbol_pointers", BFD_MACH_O_S_LAZY_DYLIB_SYMBOL_POINTERS
},
5850 const bfd_mach_o_xlat_name bfd_mach_o_section_attribute_name
[] =
5852 { "pure_instructions", BFD_MACH_O_S_ATTR_PURE_INSTRUCTIONS
},
5853 { "some_instructions", BFD_MACH_O_S_ATTR_SOME_INSTRUCTIONS
},
5854 { "loc_reloc", BFD_MACH_O_S_ATTR_LOC_RELOC
},
5855 { "ext_reloc", BFD_MACH_O_S_ATTR_EXT_RELOC
},
5856 { "debug", BFD_MACH_O_S_ATTR_DEBUG
},
5857 { "live_support", BFD_MACH_O_S_ATTR_LIVE_SUPPORT
},
5858 { "no_dead_strip", BFD_MACH_O_S_ATTR_NO_DEAD_STRIP
},
5859 { "strip_static_syms", BFD_MACH_O_S_ATTR_STRIP_STATIC_SYMS
},
5860 { "no_toc", BFD_MACH_O_S_ATTR_NO_TOC
},
5861 { "self_modifying_code", BFD_MACH_O_S_SELF_MODIFYING_CODE
},
5862 { "modifying_code", BFD_MACH_O_S_SELF_MODIFYING_CODE
},
5866 /* Get the section type from NAME. Return 256 if NAME is unknown. */
5869 bfd_mach_o_get_section_type_from_name (bfd
*abfd
, const char *name
)
5871 const bfd_mach_o_xlat_name
*x
;
5872 bfd_mach_o_backend_data
*bed
= bfd_mach_o_get_backend_data (abfd
);
5874 for (x
= bfd_mach_o_section_type_name
; x
->name
; x
++)
5875 if (strcmp (x
->name
, name
) == 0)
5877 /* We found it... does the target support it? */
5878 if (bed
->bfd_mach_o_section_type_valid_for_target
== NULL
5879 || bed
->bfd_mach_o_section_type_valid_for_target (x
->val
))
5880 return x
->val
; /* OK. */
5882 break; /* Not supported. */
5884 /* Maximum section ID = 0xff. */
5888 /* Get the section attribute from NAME. Return -1 if NAME is unknown. */
5891 bfd_mach_o_get_section_attribute_from_name (const char *name
)
5893 const bfd_mach_o_xlat_name
*x
;
5895 for (x
= bfd_mach_o_section_attribute_name
; x
->name
; x
++)
5896 if (strcmp (x
->name
, name
) == 0)
5898 return (unsigned int)-1;
5902 bfd_mach_o_core_fetch_environment (bfd
*abfd
,
5903 unsigned char **rbuf
,
5906 bfd_mach_o_data_struct
*mdata
= bfd_mach_o_get_data (abfd
);
5907 unsigned long stackaddr
= bfd_mach_o_stack_addr (mdata
->header
.cputype
);
5908 bfd_mach_o_load_command
*cmd
;
5910 for (cmd
= mdata
->first_command
; cmd
!= NULL
; cmd
= cmd
->next
)
5912 bfd_mach_o_segment_command
*seg
;
5914 if (cmd
->type
!= BFD_MACH_O_LC_SEGMENT
)
5917 seg
= &cmd
->command
.segment
;
5919 if ((seg
->vmaddr
+ seg
->vmsize
) == stackaddr
)
5921 unsigned long start
= seg
->fileoff
;
5922 unsigned long end
= seg
->fileoff
+ seg
->filesize
;
5923 unsigned char *buf
= bfd_malloc (1024);
5924 unsigned long size
= 1024;
5930 bfd_size_type nread
= 0;
5931 unsigned long offset
;
5932 int found_nonnull
= 0;
5934 if (size
> (end
- start
))
5935 size
= (end
- start
);
5937 buf
= bfd_realloc_or_free (buf
, size
);
5941 if (bfd_seek (abfd
, end
- size
, SEEK_SET
) != 0)
5947 nread
= bfd_bread (buf
, size
, abfd
);
5955 for (offset
= 4; offset
<= size
; offset
+= 4)
5959 val
= bfd_get_32(abfd
, buf
+ size
- offset
);
5961 if (! found_nonnull
)
5966 else if (val
== 0x0)
5968 unsigned long bottom
;
5971 bottom
= seg
->fileoff
+ seg
->filesize
- offset
;
5972 top
= seg
->fileoff
+ seg
->filesize
- 4;
5973 *rbuf
= bfd_malloc (top
- bottom
);
5976 *rlen
= top
- bottom
;
5978 memcpy (*rbuf
, buf
+ size
- *rlen
, *rlen
);
5984 if (size
== (end
- start
))
5998 bfd_mach_o_core_file_failing_command (bfd
*abfd
)
6000 unsigned char *buf
= NULL
;
6001 unsigned int len
= 0;
6004 ret
= bfd_mach_o_core_fetch_environment (abfd
, &buf
, &len
);
6008 return (char *) buf
;
6012 bfd_mach_o_core_file_failing_signal (bfd
*abfd ATTRIBUTE_UNUSED
)
6017 static bfd_mach_o_uuid_command
*
6018 bfd_mach_o_lookup_uuid_command (bfd
*abfd
)
6020 bfd_mach_o_load_command
*uuid_cmd
= NULL
;
6021 int ncmd
= bfd_mach_o_lookup_command (abfd
, BFD_MACH_O_LC_UUID
, &uuid_cmd
);
6022 if (ncmd
!= 1 || uuid_cmd
== NULL
)
6024 return &uuid_cmd
->command
.uuid
;
6027 /* Return true if ABFD is a dSYM file and its UUID matches UUID_CMD. */
6030 bfd_mach_o_dsym_for_uuid_p (bfd
*abfd
, const bfd_mach_o_uuid_command
*uuid_cmd
)
6032 bfd_mach_o_uuid_command
*dsym_uuid_cmd
;
6035 BFD_ASSERT (uuid_cmd
);
6037 if (!bfd_check_format (abfd
, bfd_object
))
6040 if (bfd_get_flavour (abfd
) != bfd_target_mach_o_flavour
6041 || bfd_mach_o_get_data (abfd
) == NULL
6042 || bfd_mach_o_get_data (abfd
)->header
.filetype
!= BFD_MACH_O_MH_DSYM
)
6045 dsym_uuid_cmd
= bfd_mach_o_lookup_uuid_command (abfd
);
6046 if (dsym_uuid_cmd
== NULL
)
6049 if (memcmp (uuid_cmd
->uuid
, dsym_uuid_cmd
->uuid
,
6050 sizeof (uuid_cmd
->uuid
)) != 0)
6056 /* Find a BFD in DSYM_FILENAME which matches ARCH and UUID_CMD.
6057 The caller is responsible for closing the returned BFD object and
6058 its my_archive if the returned BFD is in a fat dSYM. */
6061 bfd_mach_o_find_dsym (const char *dsym_filename
,
6062 const bfd_mach_o_uuid_command
*uuid_cmd
,
6063 const bfd_arch_info_type
*arch
)
6065 bfd
*base_dsym_bfd
, *dsym_bfd
;
6067 BFD_ASSERT (uuid_cmd
);
6069 base_dsym_bfd
= bfd_openr (dsym_filename
, NULL
);
6070 if (base_dsym_bfd
== NULL
)
6073 dsym_bfd
= bfd_mach_o_fat_extract (base_dsym_bfd
, bfd_object
, arch
);
6074 if (bfd_mach_o_dsym_for_uuid_p (dsym_bfd
, uuid_cmd
))
6077 bfd_close (dsym_bfd
);
6078 if (base_dsym_bfd
!= dsym_bfd
)
6079 bfd_close (base_dsym_bfd
);
6084 /* Return a BFD created from a dSYM file for ABFD.
6085 The caller is responsible for closing the returned BFD object, its
6086 filename, and its my_archive if the returned BFD is in a fat dSYM. */
6089 bfd_mach_o_follow_dsym (bfd
*abfd
)
6091 char *dsym_filename
;
6092 bfd_mach_o_uuid_command
*uuid_cmd
;
6093 bfd
*dsym_bfd
, *base_bfd
= abfd
;
6094 const char *base_basename
;
6096 if (abfd
== NULL
|| bfd_get_flavour (abfd
) != bfd_target_mach_o_flavour
)
6099 if (abfd
->my_archive
&& !bfd_is_thin_archive (abfd
->my_archive
))
6100 base_bfd
= abfd
->my_archive
;
6101 /* BFD may have been opened from a stream. */
6102 if (bfd_get_filename (base_bfd
) == NULL
)
6104 bfd_set_error (bfd_error_invalid_operation
);
6107 base_basename
= lbasename (bfd_get_filename (base_bfd
));
6109 uuid_cmd
= bfd_mach_o_lookup_uuid_command (abfd
);
6110 if (uuid_cmd
== NULL
)
6113 /* TODO: We assume the DWARF file has the same as the binary's.
6114 It seems apple's GDB checks all files in the dSYM bundle directory.
6115 http://opensource.apple.com/source/gdb/gdb-1708/src/gdb/macosx/macosx-tdep.c
6117 dsym_filename
= (char *)bfd_malloc (strlen (bfd_get_filename (base_bfd
))
6118 + strlen (dsym_subdir
) + 1
6119 + strlen (base_basename
) + 1);
6120 if (dsym_filename
== NULL
)
6123 sprintf (dsym_filename
, "%s%s/%s",
6124 bfd_get_filename (base_bfd
), dsym_subdir
, base_basename
);
6126 dsym_bfd
= bfd_mach_o_find_dsym (dsym_filename
, uuid_cmd
,
6127 bfd_get_arch_info (abfd
));
6128 if (dsym_bfd
== NULL
)
6129 free (dsym_filename
);
6135 bfd_mach_o_find_nearest_line (bfd
*abfd
,
6139 const char **filename_ptr
,
6140 const char **functionname_ptr
,
6141 unsigned int *line_ptr
,
6142 unsigned int *discriminator_ptr
)
6144 bfd_mach_o_data_struct
*mdata
= bfd_mach_o_get_data (abfd
);
6147 switch (mdata
->header
.filetype
)
6149 case BFD_MACH_O_MH_OBJECT
:
6151 case BFD_MACH_O_MH_EXECUTE
:
6152 case BFD_MACH_O_MH_DYLIB
:
6153 case BFD_MACH_O_MH_BUNDLE
:
6154 case BFD_MACH_O_MH_KEXT_BUNDLE
:
6155 if (mdata
->dwarf2_find_line_info
== NULL
)
6157 mdata
->dsym_bfd
= bfd_mach_o_follow_dsym (abfd
);
6158 /* When we couldn't find dSYM for this binary, we look for
6159 the debug information in the binary itself. In this way,
6160 we won't try finding separated dSYM again because
6161 mdata->dwarf2_find_line_info will be filled. */
6162 if (! mdata
->dsym_bfd
)
6164 if (! _bfd_dwarf2_slurp_debug_info (abfd
, mdata
->dsym_bfd
,
6165 dwarf_debug_sections
, symbols
,
6166 &mdata
->dwarf2_find_line_info
,
6174 return _bfd_dwarf2_find_nearest_line (abfd
, symbols
, NULL
, section
, offset
,
6175 filename_ptr
, functionname_ptr
,
6176 line_ptr
, discriminator_ptr
,
6177 dwarf_debug_sections
,
6178 &mdata
->dwarf2_find_line_info
);
6182 bfd_mach_o_close_and_cleanup (bfd
*abfd
)
6184 bfd_mach_o_data_struct
*mdata
= bfd_mach_o_get_data (abfd
);
6185 if (bfd_get_format (abfd
) == bfd_object
&& mdata
!= NULL
)
6187 _bfd_dwarf2_cleanup_debug_info (abfd
, &mdata
->dwarf2_find_line_info
);
6188 bfd_mach_o_free_cached_info (abfd
);
6189 if (mdata
->dsym_bfd
!= NULL
)
6191 bfd
*fat_bfd
= mdata
->dsym_bfd
->my_archive
;
6193 /* FIXME: PR 19435: This calculation to find the memory allocated by
6194 bfd_mach_o_follow_dsym for the filename does not always end up
6195 selecting the correct pointer. Unfortunately this problem is
6196 very hard to reproduce on a non Mach-O native system, so until it
6197 can be traced and fixed on such a system, this code will remain
6198 commented out. This does mean that there will be a memory leak,
6199 but it is small, and happens when we are closing down, so it
6200 should not matter too much. */
6201 char *dsym_filename
= (char *)(fat_bfd
6202 ? bfd_get_filename (fat_bfd
)
6203 : bfd_get_filename (mdata
->dsym_bfd
));
6205 bfd_close (mdata
->dsym_bfd
);
6206 mdata
->dsym_bfd
= NULL
;
6208 bfd_close (fat_bfd
);
6210 free (dsym_filename
);
6215 return _bfd_generic_close_and_cleanup (abfd
);
6219 bfd_mach_o_free_cached_info (bfd
*abfd
)
6221 bfd_mach_o_data_struct
*mdata
= bfd_mach_o_get_data (abfd
);
6223 free (mdata
->dyn_reloc_cache
);
6224 mdata
->dyn_reloc_cache
= NULL
;
6225 for (asect
= abfd
->sections
; asect
!= NULL
; asect
= asect
->next
)
6227 free (asect
->relocation
);
6228 asect
->relocation
= NULL
;
6234 #define bfd_mach_o_bfd_reloc_type_lookup _bfd_norelocs_bfd_reloc_type_lookup
6235 #define bfd_mach_o_bfd_reloc_name_lookup _bfd_norelocs_bfd_reloc_name_lookup
6237 #define bfd_mach_o_canonicalize_one_reloc NULL
6238 #define bfd_mach_o_swap_reloc_out NULL
6239 #define bfd_mach_o_print_thread NULL
6240 #define bfd_mach_o_tgt_seg_table NULL
6241 #define bfd_mach_o_section_type_valid_for_tgt NULL
6243 #define TARGET_NAME mach_o_be_vec
6244 #define TARGET_STRING "mach-o-be"
6245 #define TARGET_ARCHITECTURE bfd_arch_unknown
6246 #define TARGET_PAGESIZE 1
6247 #define TARGET_BIG_ENDIAN 1
6248 #define TARGET_ARCHIVE 0
6249 #define TARGET_PRIORITY 1
6250 #include "mach-o-target.c"
6253 #undef TARGET_STRING
6254 #undef TARGET_ARCHITECTURE
6255 #undef TARGET_PAGESIZE
6256 #undef TARGET_BIG_ENDIAN
6257 #undef TARGET_ARCHIVE
6258 #undef TARGET_PRIORITY
6260 #define TARGET_NAME mach_o_le_vec
6261 #define TARGET_STRING "mach-o-le"
6262 #define TARGET_ARCHITECTURE bfd_arch_unknown
6263 #define TARGET_PAGESIZE 1
6264 #define TARGET_BIG_ENDIAN 0
6265 #define TARGET_ARCHIVE 0
6266 #define TARGET_PRIORITY 1
6268 #include "mach-o-target.c"
6271 #undef TARGET_STRING
6272 #undef TARGET_ARCHITECTURE
6273 #undef TARGET_PAGESIZE
6274 #undef TARGET_BIG_ENDIAN
6275 #undef TARGET_ARCHIVE
6276 #undef TARGET_PRIORITY
6278 /* Not yet handled: creating an archive. */
6279 #define bfd_mach_o_mkarchive _bfd_noarchive_mkarchive
6281 #define bfd_mach_o_close_and_cleanup bfd_mach_o_fat_close_and_cleanup
6284 #define bfd_mach_o_generic_stat_arch_elt bfd_mach_o_fat_stat_arch_elt
6285 #define bfd_mach_o_openr_next_archived_file bfd_mach_o_fat_openr_next_archived_file
6286 #define bfd_mach_o_archive_p bfd_mach_o_fat_archive_p
6288 #define TARGET_NAME mach_o_fat_vec
6289 #define TARGET_STRING "mach-o-fat"
6290 #define TARGET_ARCHITECTURE bfd_arch_unknown
6291 #define TARGET_PAGESIZE 1
6292 #define TARGET_BIG_ENDIAN 1
6293 #define TARGET_ARCHIVE 1
6294 #define TARGET_PRIORITY 0
6296 #include "mach-o-target.c"
6299 #undef TARGET_STRING
6300 #undef TARGET_ARCHITECTURE
6301 #undef TARGET_PAGESIZE
6302 #undef TARGET_BIG_ENDIAN
6303 #undef TARGET_ARCHIVE
6304 #undef TARGET_PRIORITY