1 /* Mach-O support for BFD.
2 Copyright (C) 1999-2023 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 /* FIXME: This array is set by the assembler but does not seem to be
530 set anywhere for objcopy. Since bfd_mach_o_build_dysymtab will
531 not fill in output bfd_mach_o_dysymtab_command indirect_syms when
532 this array is NULL we may as well return zero for the size.
533 This is enough to stop objcopy allocating huge amounts of memory
534 for indirect symbols in fuzzed object files. */
535 if (sec
->indirect_syms
== NULL
)
538 elsz
= bfd_mach_o_section_get_entry_size (abfd
, sec
);
542 return sec
->size
/ elsz
;
545 /* Append command CMD to ABFD. Note that header.ncmds is not updated. */
548 bfd_mach_o_append_command (bfd
*abfd
, bfd_mach_o_load_command
*cmd
)
550 bfd_mach_o_data_struct
*mdata
= bfd_mach_o_get_data (abfd
);
552 if (mdata
->last_command
!= NULL
)
553 mdata
->last_command
->next
= cmd
;
555 mdata
->first_command
= cmd
;
556 mdata
->last_command
= cmd
;
560 /* Copy any private info we understand from the input symbol
561 to the output symbol. */
564 bfd_mach_o_bfd_copy_private_symbol_data (bfd
*ibfd ATTRIBUTE_UNUSED
,
566 bfd
*obfd ATTRIBUTE_UNUSED
,
569 bfd_mach_o_asymbol
*os
, *is
;
571 os
= (bfd_mach_o_asymbol
*)osymbol
;
572 is
= (bfd_mach_o_asymbol
*)isymbol
;
573 os
->n_type
= is
->n_type
;
574 os
->n_sect
= is
->n_sect
;
575 os
->n_desc
= is
->n_desc
;
576 os
->symbol
.udata
.i
= is
->symbol
.udata
.i
;
581 /* Copy any private info we understand from the input section
582 to the output section. */
585 bfd_mach_o_bfd_copy_private_section_data (bfd
*ibfd
, asection
*isection
,
586 bfd
*obfd
, asection
*osection
)
588 bfd_mach_o_section
*os
= bfd_mach_o_get_mach_o_section (osection
);
589 bfd_mach_o_section
*is
= bfd_mach_o_get_mach_o_section (isection
);
591 if (ibfd
->xvec
->flavour
!= bfd_target_mach_o_flavour
592 || obfd
->xvec
->flavour
!= bfd_target_mach_o_flavour
)
595 BFD_ASSERT (is
!= NULL
&& os
!= NULL
);
597 os
->flags
= is
->flags
;
598 os
->reserved1
= is
->reserved1
;
599 os
->reserved2
= is
->reserved2
;
600 os
->reserved3
= is
->reserved3
;
606 cputype (unsigned long value
)
610 case BFD_MACH_O_CPU_TYPE_VAX
: return "VAX";
611 case BFD_MACH_O_CPU_TYPE_MC680x0
: return "MC68k";
612 case BFD_MACH_O_CPU_TYPE_I386
: return "I386";
613 case BFD_MACH_O_CPU_TYPE_MIPS
: return "MIPS";
614 case BFD_MACH_O_CPU_TYPE_MC98000
: return "MC98k";
615 case BFD_MACH_O_CPU_TYPE_HPPA
: return "HPPA";
616 case BFD_MACH_O_CPU_TYPE_ARM
: return "ARM";
617 case BFD_MACH_O_CPU_TYPE_MC88000
: return "MC88K";
618 case BFD_MACH_O_CPU_TYPE_SPARC
: return "SPARC";
619 case BFD_MACH_O_CPU_TYPE_I860
: return "I860";
620 case BFD_MACH_O_CPU_TYPE_ALPHA
: return "ALPHA";
621 case BFD_MACH_O_CPU_TYPE_POWERPC
: return "PPC";
622 case BFD_MACH_O_CPU_TYPE_POWERPC_64
: return "PPC64";
623 case BFD_MACH_O_CPU_TYPE_X86_64
: return "X86_64";
624 case BFD_MACH_O_CPU_TYPE_ARM64
: return "ARM64";
625 default: return _("<unknown>");
630 cpusubtype (unsigned long cpu_type
, unsigned long cpu_subtype
, char *buffer
)
633 switch (cpu_subtype
& BFD_MACH_O_CPU_SUBTYPE_MASK
)
637 case BFD_MACH_O_CPU_SUBTYPE_LIB64
:
638 sprintf (buffer
, " (LIB64)"); break;
640 sprintf (buffer
, _("<unknown mask flags>")); break;
643 cpu_subtype
&= ~ BFD_MACH_O_CPU_SUBTYPE_MASK
;
647 case BFD_MACH_O_CPU_TYPE_X86_64
:
648 case BFD_MACH_O_CPU_TYPE_I386
:
651 case BFD_MACH_O_CPU_SUBTYPE_X86_ALL
:
652 return strcat (buffer
, " (X86_ALL)");
658 case BFD_MACH_O_CPU_TYPE_ARM
:
661 case BFD_MACH_O_CPU_SUBTYPE_ARM_ALL
:
662 return strcat (buffer
, " (ARM_ALL)");
663 case BFD_MACH_O_CPU_SUBTYPE_ARM_V4T
:
664 return strcat (buffer
, " (ARM_V4T)");
665 case BFD_MACH_O_CPU_SUBTYPE_ARM_V6
:
666 return strcat (buffer
, " (ARM_V6)");
667 case BFD_MACH_O_CPU_SUBTYPE_ARM_V5TEJ
:
668 return strcat (buffer
, " (ARM_V5TEJ)");
669 case BFD_MACH_O_CPU_SUBTYPE_ARM_XSCALE
:
670 return strcat (buffer
, " (ARM_XSCALE)");
671 case BFD_MACH_O_CPU_SUBTYPE_ARM_V7
:
672 return strcat (buffer
, " (ARM_V7)");
678 case BFD_MACH_O_CPU_TYPE_ARM64
:
681 case BFD_MACH_O_CPU_SUBTYPE_ARM64_ALL
:
682 return strcat (buffer
, " (ARM64_ALL)");
683 case BFD_MACH_O_CPU_SUBTYPE_ARM64_V8
:
684 return strcat (buffer
, " (ARM64_V8)");
694 if (cpu_subtype
!= 0)
695 return strcat (buffer
, _(" (<unknown>)"));
701 bfd_mach_o_bfd_print_private_bfd_data (bfd
*abfd
, void *ptr
)
703 FILE * file
= (FILE *) ptr
;
704 bfd_mach_o_data_struct
*mdata
= bfd_mach_o_get_data (abfd
);
707 fprintf (file
, _(" MACH-O header:\n"));
708 fprintf (file
, _(" magic: %#lx\n"), (long) mdata
->header
.magic
);
709 fprintf (file
, _(" cputype: %#lx (%s)\n"), (long) mdata
->header
.cputype
,
710 cputype (mdata
->header
.cputype
));
711 fprintf (file
, _(" cpusubtype: %#lx%s\n"), (long) mdata
->header
.cpusubtype
,
712 cpusubtype (mdata
->header
.cputype
, mdata
->header
.cpusubtype
, buff
));
713 fprintf (file
, _(" filetype: %#lx\n"), (long) mdata
->header
.filetype
);
714 fprintf (file
, _(" ncmds: %#lx\n"), (long) mdata
->header
.ncmds
);
715 fprintf (file
, _(" sizeocmds: %#lx\n"), (long) mdata
->header
.sizeofcmds
);
716 fprintf (file
, _(" flags: %#lx\n"), (long) mdata
->header
.flags
);
717 fprintf (file
, _(" version: %x\n"), mdata
->header
.version
);
722 /* Copy any private info we understand from the input bfd
723 to the output bfd. */
726 bfd_mach_o_bfd_copy_private_header_data (bfd
*ibfd
, bfd
*obfd
)
728 bfd_mach_o_data_struct
*imdata
;
729 bfd_mach_o_data_struct
*omdata
;
730 bfd_mach_o_load_command
*icmd
;
732 if (bfd_get_flavour (ibfd
) != bfd_target_mach_o_flavour
733 || bfd_get_flavour (obfd
) != bfd_target_mach_o_flavour
)
736 BFD_ASSERT (bfd_mach_o_valid (ibfd
));
737 BFD_ASSERT (bfd_mach_o_valid (obfd
));
739 imdata
= bfd_mach_o_get_data (ibfd
);
740 omdata
= bfd_mach_o_get_data (obfd
);
742 /* Copy header flags. */
743 omdata
->header
.flags
= imdata
->header
.flags
;
745 /* PR 23299. Copy the cputype. */
746 if (imdata
->header
.cputype
!= omdata
->header
.cputype
)
748 if (omdata
->header
.cputype
== 0)
749 omdata
->header
.cputype
= imdata
->header
.cputype
;
750 else if (imdata
->header
.cputype
!= 0)
751 /* Urg - what has happened ? */
752 _bfd_error_handler (_("incompatible cputypes in mach-o files: %ld vs %ld"),
753 (long) imdata
->header
.cputype
,
754 (long) omdata
->header
.cputype
);
757 /* Copy the cpusubtype. */
758 omdata
->header
.cpusubtype
= imdata
->header
.cpusubtype
;
761 for (icmd
= imdata
->first_command
; icmd
!= NULL
; icmd
= icmd
->next
)
763 bfd_mach_o_load_command
*ocmd
;
767 case BFD_MACH_O_LC_LOAD_DYLIB
:
768 case BFD_MACH_O_LC_LOAD_DYLINKER
:
769 case BFD_MACH_O_LC_DYLD_INFO
:
770 /* Command is copied. */
771 ocmd
= bfd_alloc (obfd
, sizeof (bfd_mach_o_load_command
));
775 /* Copy common fields. */
776 ocmd
->type
= icmd
->type
;
777 ocmd
->type_required
= icmd
->type_required
;
779 ocmd
->len
= icmd
->len
;
783 /* Command is not copied. */
790 case BFD_MACH_O_LC_LOAD_DYLIB
:
792 bfd_mach_o_dylib_command
*idy
= &icmd
->command
.dylib
;
793 bfd_mach_o_dylib_command
*ody
= &ocmd
->command
.dylib
;
795 ody
->name_offset
= idy
->name_offset
;
796 ody
->timestamp
= idy
->timestamp
;
797 ody
->current_version
= idy
->current_version
;
798 ody
->compatibility_version
= idy
->compatibility_version
;
799 ody
->name_str
= idy
->name_str
;
803 case BFD_MACH_O_LC_LOAD_DYLINKER
:
805 bfd_mach_o_dylinker_command
*idy
= &icmd
->command
.dylinker
;
806 bfd_mach_o_dylinker_command
*ody
= &ocmd
->command
.dylinker
;
808 ody
->name_offset
= idy
->name_offset
;
809 ody
->name_str
= idy
->name_str
;
813 case BFD_MACH_O_LC_DYLD_INFO
:
815 bfd_mach_o_dyld_info_command
*idy
= &icmd
->command
.dyld_info
;
816 bfd_mach_o_dyld_info_command
*ody
= &ocmd
->command
.dyld_info
;
818 if (bfd_mach_o_read_dyld_content (ibfd
, idy
))
820 ody
->rebase_size
= idy
->rebase_size
;
821 ody
->rebase_content
= idy
->rebase_content
;
823 ody
->bind_size
= idy
->bind_size
;
824 ody
->bind_content
= idy
->bind_content
;
826 ody
->weak_bind_size
= idy
->weak_bind_size
;
827 ody
->weak_bind_content
= idy
->weak_bind_content
;
829 ody
->lazy_bind_size
= idy
->lazy_bind_size
;
830 ody
->lazy_bind_content
= idy
->lazy_bind_content
;
832 ody
->export_size
= idy
->export_size
;
833 ody
->export_content
= idy
->export_content
;
835 /* PR 17512L: file: 730e492d. */
840 ody
->weak_bind_size
=
841 ody
->lazy_bind_size
=
842 ody
->export_size
= 0;
843 ody
->rebase_content
=
845 ody
->weak_bind_content
=
846 ody
->lazy_bind_content
=
847 ody
->export_content
= NULL
;
853 /* That command should be handled. */
857 /* Insert command. */
858 bfd_mach_o_append_command (obfd
, ocmd
);
864 /* This allows us to set up to 32 bits of flags (unless we invent some
865 fiendish scheme to subdivide). For now, we'll just set the file flags
866 without error checking - just overwrite. */
869 bfd_mach_o_bfd_set_private_flags (bfd
*abfd
, flagword flags
)
871 bfd_mach_o_data_struct
*mdata
= bfd_mach_o_get_data (abfd
);
876 mdata
->header
.flags
= flags
;
880 /* Count the total number of symbols. */
883 bfd_mach_o_count_symbols (bfd
*abfd
)
885 bfd_mach_o_data_struct
*mdata
= bfd_mach_o_get_data (abfd
);
887 if (mdata
->symtab
== NULL
)
889 return mdata
->symtab
->nsyms
;
893 bfd_mach_o_get_symtab_upper_bound (bfd
*abfd
)
895 long nsyms
= bfd_mach_o_count_symbols (abfd
);
897 return ((nsyms
+ 1) * sizeof (asymbol
*));
901 bfd_mach_o_canonicalize_symtab (bfd
*abfd
, asymbol
**alocation
)
903 bfd_mach_o_data_struct
*mdata
= bfd_mach_o_get_data (abfd
);
904 long nsyms
= bfd_mach_o_count_symbols (abfd
);
905 bfd_mach_o_symtab_command
*sym
= mdata
->symtab
;
913 /* Do not try to read symbols if there are none. */
918 if (!bfd_mach_o_read_symtab_symbols (abfd
))
921 (_("bfd_mach_o_canonicalize_symtab: unable to load symbols"));
925 BFD_ASSERT (sym
->symbols
!= NULL
);
927 for (j
= 0; j
< sym
->nsyms
; j
++)
928 alocation
[j
] = &sym
->symbols
[j
].symbol
;
935 /* Create synthetic symbols for indirect symbols. */
938 bfd_mach_o_get_synthetic_symtab (bfd
*abfd
,
939 long symcount ATTRIBUTE_UNUSED
,
940 asymbol
**syms ATTRIBUTE_UNUSED
,
941 long dynsymcount ATTRIBUTE_UNUSED
,
942 asymbol
**dynsyms ATTRIBUTE_UNUSED
,
945 bfd_mach_o_data_struct
*mdata
= bfd_mach_o_get_data (abfd
);
946 bfd_mach_o_dysymtab_command
*dysymtab
= mdata
->dysymtab
;
947 bfd_mach_o_symtab_command
*symtab
= mdata
->symtab
;
950 unsigned long count
, i
, j
, n
;
953 const char stub
[] = "$stub";
957 /* Stop now if no symbols or no indirect symbols. */
958 if (dysymtab
== NULL
|| dysymtab
->nindirectsyms
== 0
959 || symtab
== NULL
|| symtab
->symbols
== NULL
)
962 /* We need to allocate a bfd symbol for every indirect symbol and to
963 allocate the memory for its name. */
964 count
= dysymtab
->nindirectsyms
;
966 for (j
= 0; j
< count
; j
++)
968 unsigned int isym
= dysymtab
->indirect_syms
[j
];
971 /* Some indirect symbols are anonymous. */
972 if (isym
< symtab
->nsyms
973 && (str
= symtab
->symbols
[isym
].symbol
.name
) != NULL
)
975 /* PR 17512: file: f5b8eeba. */
976 size
+= strnlen (str
, symtab
->strsize
- (str
- symtab
->strtab
));
977 size
+= sizeof (stub
);
981 s_start
= bfd_malloc (size
+ count
* sizeof (asymbol
));
982 s
= *ret
= (asymbol
*) s_start
;
985 names
= (char *) (s
+ count
);
988 for (i
= 0; i
< mdata
->nsects
; i
++)
990 bfd_mach_o_section
*sec
= mdata
->sections
[i
];
991 unsigned int first
, last
;
993 unsigned int entry_size
;
995 switch (sec
->flags
& BFD_MACH_O_SECTION_TYPE_MASK
)
997 case BFD_MACH_O_S_NON_LAZY_SYMBOL_POINTERS
:
998 case BFD_MACH_O_S_LAZY_SYMBOL_POINTERS
:
999 case BFD_MACH_O_S_SYMBOL_STUBS
:
1000 /* Only these sections have indirect symbols. */
1001 first
= sec
->reserved1
;
1002 last
= first
+ bfd_mach_o_section_get_nbr_indirect (abfd
, sec
);
1004 entry_size
= bfd_mach_o_section_get_entry_size (abfd
, sec
);
1006 /* PR 17512: file: 08e15eec. */
1007 if (first
>= count
|| last
> count
|| first
> last
)
1010 for (j
= first
; j
< last
; j
++)
1012 unsigned int isym
= dysymtab
->indirect_syms
[j
];
1016 if (isym
< symtab
->nsyms
1017 && (str
= symtab
->symbols
[isym
].symbol
.name
) != NULL
)
1019 /* PR 17512: file: 04d64d9b. */
1022 len
= strnlen (str
, symtab
->strsize
- (str
- symtab
->strtab
));
1023 /* PR 17512: file: 47dfd4d2, 18f340a4. */
1024 if (size
< len
+ sizeof (stub
))
1026 memcpy (names
, str
, len
);
1027 memcpy (names
+ len
, stub
, sizeof (stub
));
1029 names
+= len
+ sizeof (stub
);
1030 size
-= len
+ sizeof (stub
);
1031 s
->the_bfd
= symtab
->symbols
[isym
].symbol
.the_bfd
;
1032 s
->flags
= BSF_GLOBAL
| BSF_SYNTHETIC
;
1033 s
->section
= sec
->bfdsection
;
1034 s
->value
= addr
- sec
->addr
;
1056 bfd_mach_o_get_symbol_info (bfd
*abfd ATTRIBUTE_UNUSED
,
1060 bfd_symbol_info (symbol
, ret
);
1064 bfd_mach_o_print_symbol (bfd
*abfd
,
1067 bfd_print_symbol_type how
)
1069 FILE *file
= (FILE *) afile
;
1071 bfd_mach_o_asymbol
*asym
= (bfd_mach_o_asymbol
*)symbol
;
1075 case bfd_print_symbol_name
:
1076 fprintf (file
, "%s", symbol
->name
);
1079 bfd_print_symbol_vandf (abfd
, (void *) file
, symbol
);
1080 if (asym
->n_type
& BFD_MACH_O_N_STAB
)
1081 name
= bfd_get_stab_name (asym
->n_type
);
1083 switch (asym
->n_type
& BFD_MACH_O_N_TYPE
)
1085 case BFD_MACH_O_N_UNDF
:
1086 if (symbol
->value
== 0)
1091 case BFD_MACH_O_N_ABS
:
1094 case BFD_MACH_O_N_INDR
:
1097 case BFD_MACH_O_N_PBUD
:
1100 case BFD_MACH_O_N_SECT
:
1109 fprintf (file
, " %02x %-6s %02x %04x",
1110 asym
->n_type
, name
, asym
->n_sect
, asym
->n_desc
);
1111 if ((asym
->n_type
& BFD_MACH_O_N_STAB
) == 0
1112 && (asym
->n_type
& BFD_MACH_O_N_TYPE
) == BFD_MACH_O_N_SECT
)
1113 fprintf (file
, " [%s]", symbol
->section
->name
);
1114 fprintf (file
, " %s", symbol
->name
);
1119 bfd_mach_o_convert_architecture (bfd_mach_o_cpu_type mtype
,
1120 bfd_mach_o_cpu_subtype msubtype
,
1121 enum bfd_architecture
*type
,
1122 unsigned long *subtype
)
1124 *subtype
= bfd_arch_unknown
;
1128 case BFD_MACH_O_CPU_TYPE_VAX
:
1129 *type
= bfd_arch_vax
;
1131 case BFD_MACH_O_CPU_TYPE_MC680x0
:
1132 *type
= bfd_arch_m68k
;
1134 case BFD_MACH_O_CPU_TYPE_I386
:
1135 *type
= bfd_arch_i386
;
1136 *subtype
= bfd_mach_i386_i386
;
1138 case BFD_MACH_O_CPU_TYPE_X86_64
:
1139 *type
= bfd_arch_i386
;
1140 *subtype
= bfd_mach_x86_64
;
1142 case BFD_MACH_O_CPU_TYPE_MIPS
:
1143 *type
= bfd_arch_mips
;
1145 case BFD_MACH_O_CPU_TYPE_MC98000
:
1146 *type
= bfd_arch_m98k
;
1148 case BFD_MACH_O_CPU_TYPE_HPPA
:
1149 *type
= bfd_arch_hppa
;
1151 case BFD_MACH_O_CPU_TYPE_ARM
:
1152 *type
= bfd_arch_arm
;
1155 case BFD_MACH_O_CPU_SUBTYPE_ARM_V4T
:
1156 *subtype
= bfd_mach_arm_4T
;
1158 case BFD_MACH_O_CPU_SUBTYPE_ARM_V6
:
1159 *subtype
= bfd_mach_arm_4T
; /* Best fit ? */
1161 case BFD_MACH_O_CPU_SUBTYPE_ARM_V5TEJ
:
1162 *subtype
= bfd_mach_arm_5TE
;
1164 case BFD_MACH_O_CPU_SUBTYPE_ARM_XSCALE
:
1165 *subtype
= bfd_mach_arm_XScale
;
1167 case BFD_MACH_O_CPU_SUBTYPE_ARM_V7
:
1168 *subtype
= bfd_mach_arm_5TE
; /* Best fit ? */
1170 case BFD_MACH_O_CPU_SUBTYPE_ARM_ALL
:
1175 case BFD_MACH_O_CPU_TYPE_SPARC
:
1176 *type
= bfd_arch_sparc
;
1177 *subtype
= bfd_mach_sparc
;
1179 case BFD_MACH_O_CPU_TYPE_ALPHA
:
1180 *type
= bfd_arch_alpha
;
1182 case BFD_MACH_O_CPU_TYPE_POWERPC
:
1183 *type
= bfd_arch_powerpc
;
1184 *subtype
= bfd_mach_ppc
;
1186 case BFD_MACH_O_CPU_TYPE_POWERPC_64
:
1187 *type
= bfd_arch_powerpc
;
1188 *subtype
= bfd_mach_ppc64
;
1190 case BFD_MACH_O_CPU_TYPE_ARM64
:
1191 *type
= bfd_arch_aarch64
;
1192 *subtype
= bfd_mach_aarch64
;
1195 *type
= bfd_arch_unknown
;
1200 /* Write n NUL bytes to ABFD so that LEN + n is a multiple of 4. Return the
1201 number of bytes written or -1 in case of error. */
1204 bfd_mach_o_pad4 (bfd
*abfd
, size_t len
)
1208 char pad
[4] = {0,0,0,0};
1209 unsigned int padlen
= 4 - (len
% 4);
1211 if (bfd_bwrite (pad
, padlen
, abfd
) != padlen
)
1220 /* Likewise, but for a command. */
1223 bfd_mach_o_pad_command (bfd
*abfd
, size_t len
)
1225 size_t align
= bfd_mach_o_wide_p (abfd
) ? 8 : 4;
1227 if (len
% align
!= 0)
1230 size_t padlen
= align
- (len
% align
);
1232 if (bfd_bwrite (pad
, padlen
, abfd
) != padlen
)
1242 bfd_mach_o_write_header (bfd
*abfd
, bfd_mach_o_header
*header
)
1244 struct mach_o_header_external raw
;
1247 size
= mach_o_wide_p (header
) ?
1248 BFD_MACH_O_HEADER_64_SIZE
: BFD_MACH_O_HEADER_SIZE
;
1250 bfd_h_put_32 (abfd
, header
->magic
, raw
.magic
);
1251 bfd_h_put_32 (abfd
, header
->cputype
, raw
.cputype
);
1252 bfd_h_put_32 (abfd
, header
->cpusubtype
, raw
.cpusubtype
);
1253 bfd_h_put_32 (abfd
, header
->filetype
, raw
.filetype
);
1254 bfd_h_put_32 (abfd
, header
->ncmds
, raw
.ncmds
);
1255 bfd_h_put_32 (abfd
, header
->sizeofcmds
, raw
.sizeofcmds
);
1256 bfd_h_put_32 (abfd
, header
->flags
, raw
.flags
);
1258 if (mach_o_wide_p (header
))
1259 bfd_h_put_32 (abfd
, header
->reserved
, raw
.reserved
);
1261 if (bfd_seek (abfd
, 0, SEEK_SET
) != 0
1262 || bfd_bwrite (&raw
, size
, abfd
) != size
)
1269 bfd_mach_o_write_thread (bfd
*abfd
, bfd_mach_o_load_command
*command
)
1271 bfd_mach_o_thread_command
*cmd
= &command
->command
.thread
;
1273 struct mach_o_thread_command_external raw
;
1276 BFD_ASSERT ((command
->type
== BFD_MACH_O_LC_THREAD
)
1277 || (command
->type
== BFD_MACH_O_LC_UNIXTHREAD
));
1279 offset
= BFD_MACH_O_LC_SIZE
;
1280 for (i
= 0; i
< cmd
->nflavours
; i
++)
1282 BFD_ASSERT ((cmd
->flavours
[i
].size
% 4) == 0);
1283 BFD_ASSERT (cmd
->flavours
[i
].offset
1284 == command
->offset
+ offset
+ BFD_MACH_O_LC_SIZE
);
1286 bfd_h_put_32 (abfd
, cmd
->flavours
[i
].flavour
, raw
.flavour
);
1287 bfd_h_put_32 (abfd
, (cmd
->flavours
[i
].size
/ 4), raw
.count
);
1289 if (bfd_seek (abfd
, command
->offset
+ offset
, SEEK_SET
) != 0
1290 || bfd_bwrite (&raw
, sizeof (raw
), abfd
) != sizeof (raw
))
1293 offset
+= cmd
->flavours
[i
].size
+ sizeof (raw
);
1300 bfd_mach_o_write_dylinker (bfd
*abfd
, bfd_mach_o_load_command
*command
)
1302 bfd_mach_o_dylinker_command
*cmd
= &command
->command
.dylinker
;
1303 struct mach_o_str_command_external raw
;
1306 bfd_h_put_32 (abfd
, cmd
->name_offset
, raw
.str
);
1308 if (bfd_seek (abfd
, command
->offset
+ BFD_MACH_O_LC_SIZE
, SEEK_SET
) != 0
1309 || bfd_bwrite (&raw
, sizeof (raw
), abfd
) != sizeof (raw
))
1312 namelen
= strlen (cmd
->name_str
) + 1;
1313 if (bfd_bwrite (cmd
->name_str
, namelen
, abfd
) != namelen
)
1316 if (bfd_mach_o_pad_command (abfd
, namelen
) < 0)
1323 bfd_mach_o_write_dylib (bfd
*abfd
, bfd_mach_o_load_command
*command
)
1325 bfd_mach_o_dylib_command
*cmd
= &command
->command
.dylib
;
1326 struct mach_o_dylib_command_external raw
;
1329 bfd_h_put_32 (abfd
, cmd
->name_offset
, raw
.name
);
1330 bfd_h_put_32 (abfd
, cmd
->timestamp
, raw
.timestamp
);
1331 bfd_h_put_32 (abfd
, cmd
->current_version
, raw
.current_version
);
1332 bfd_h_put_32 (abfd
, cmd
->compatibility_version
, raw
.compatibility_version
);
1334 if (bfd_seek (abfd
, command
->offset
+ BFD_MACH_O_LC_SIZE
, SEEK_SET
) != 0
1335 || bfd_bwrite (&raw
, sizeof (raw
), abfd
) != sizeof (raw
))
1338 namelen
= strlen (cmd
->name_str
) + 1;
1339 if (bfd_bwrite (cmd
->name_str
, namelen
, abfd
) != namelen
)
1342 if (bfd_mach_o_pad_command (abfd
, namelen
) < 0)
1349 bfd_mach_o_write_main (bfd
*abfd
, bfd_mach_o_load_command
*command
)
1351 bfd_mach_o_main_command
*cmd
= &command
->command
.main
;
1352 struct mach_o_entry_point_command_external raw
;
1354 bfd_h_put_64 (abfd
, cmd
->entryoff
, raw
.entryoff
);
1355 bfd_h_put_64 (abfd
, cmd
->stacksize
, raw
.stacksize
);
1357 if (bfd_seek (abfd
, command
->offset
+ BFD_MACH_O_LC_SIZE
, SEEK_SET
) != 0
1358 || bfd_bwrite (&raw
, sizeof (raw
), abfd
) != sizeof (raw
))
1365 bfd_mach_o_write_dyld_info (bfd
*abfd
, bfd_mach_o_load_command
*command
)
1367 bfd_mach_o_dyld_info_command
*cmd
= &command
->command
.dyld_info
;
1368 struct mach_o_dyld_info_command_external raw
;
1370 bfd_h_put_32 (abfd
, cmd
->rebase_off
, raw
.rebase_off
);
1371 bfd_h_put_32 (abfd
, cmd
->rebase_size
, raw
.rebase_size
);
1372 bfd_h_put_32 (abfd
, cmd
->bind_off
, raw
.bind_off
);
1373 bfd_h_put_32 (abfd
, cmd
->bind_size
, raw
.bind_size
);
1374 bfd_h_put_32 (abfd
, cmd
->weak_bind_off
, raw
.weak_bind_off
);
1375 bfd_h_put_32 (abfd
, cmd
->weak_bind_size
, raw
.weak_bind_size
);
1376 bfd_h_put_32 (abfd
, cmd
->lazy_bind_off
, raw
.lazy_bind_off
);
1377 bfd_h_put_32 (abfd
, cmd
->lazy_bind_size
, raw
.lazy_bind_size
);
1378 bfd_h_put_32 (abfd
, cmd
->export_off
, raw
.export_off
);
1379 bfd_h_put_32 (abfd
, cmd
->export_size
, raw
.export_size
);
1381 if (bfd_seek (abfd
, command
->offset
+ BFD_MACH_O_LC_SIZE
, SEEK_SET
) != 0
1382 || bfd_bwrite (&raw
, sizeof (raw
), abfd
) != sizeof (raw
))
1385 if (cmd
->rebase_size
!= 0)
1386 if (bfd_seek (abfd
, cmd
->rebase_off
, SEEK_SET
) != 0
1387 || (bfd_bwrite (cmd
->rebase_content
, cmd
->rebase_size
, abfd
) !=
1391 if (cmd
->bind_size
!= 0)
1392 if (bfd_seek (abfd
, cmd
->bind_off
, SEEK_SET
) != 0
1393 || (bfd_bwrite (cmd
->bind_content
, cmd
->bind_size
, abfd
) !=
1397 if (cmd
->weak_bind_size
!= 0)
1398 if (bfd_seek (abfd
, cmd
->weak_bind_off
, SEEK_SET
) != 0
1399 || (bfd_bwrite (cmd
->weak_bind_content
, cmd
->weak_bind_size
, abfd
) !=
1400 cmd
->weak_bind_size
))
1403 if (cmd
->lazy_bind_size
!= 0)
1404 if (bfd_seek (abfd
, cmd
->lazy_bind_off
, SEEK_SET
) != 0
1405 || (bfd_bwrite (cmd
->lazy_bind_content
, cmd
->lazy_bind_size
, abfd
) !=
1406 cmd
->lazy_bind_size
))
1409 if (cmd
->export_size
!= 0)
1410 if (bfd_seek (abfd
, cmd
->export_off
, SEEK_SET
) != 0
1411 || (bfd_bwrite (cmd
->export_content
, cmd
->export_size
, abfd
) !=
1419 bfd_mach_o_get_reloc_upper_bound (bfd
*abfd
, asection
*asect
)
1423 count
= asect
->reloc_count
;
1424 if (count
>= LONG_MAX
/ sizeof (arelent
*)
1425 || _bfd_mul_overflow (count
, BFD_MACH_O_RELENT_SIZE
, &raw
))
1427 bfd_set_error (bfd_error_file_too_big
);
1430 if (!bfd_write_p (abfd
))
1432 ufile_ptr filesize
= bfd_get_file_size (abfd
);
1433 if (filesize
!= 0 && raw
> filesize
)
1435 bfd_set_error (bfd_error_file_truncated
);
1439 return (count
+ 1) * sizeof (arelent
*);
1442 /* In addition to the need to byte-swap the symbol number, the bit positions
1443 of the fields in the relocation information vary per target endian-ness. */
1446 bfd_mach_o_swap_in_non_scattered_reloc (bfd
*abfd
, bfd_mach_o_reloc_info
*rel
,
1447 unsigned char *fields
)
1449 unsigned char info
= fields
[3];
1451 if (bfd_big_endian (abfd
))
1453 rel
->r_value
= (fields
[0] << 16) | (fields
[1] << 8) | fields
[2];
1454 rel
->r_type
= (info
>> BFD_MACH_O_BE_TYPE_SHIFT
) & BFD_MACH_O_TYPE_MASK
;
1455 rel
->r_pcrel
= (info
& BFD_MACH_O_BE_PCREL
) ? 1 : 0;
1456 rel
->r_length
= (info
>> BFD_MACH_O_BE_LENGTH_SHIFT
)
1457 & BFD_MACH_O_LENGTH_MASK
;
1458 rel
->r_extern
= (info
& BFD_MACH_O_BE_EXTERN
) ? 1 : 0;
1462 rel
->r_value
= (fields
[2] << 16) | (fields
[1] << 8) | fields
[0];
1463 rel
->r_type
= (info
>> BFD_MACH_O_LE_TYPE_SHIFT
) & BFD_MACH_O_TYPE_MASK
;
1464 rel
->r_pcrel
= (info
& BFD_MACH_O_LE_PCREL
) ? 1 : 0;
1465 rel
->r_length
= (info
>> BFD_MACH_O_LE_LENGTH_SHIFT
)
1466 & BFD_MACH_O_LENGTH_MASK
;
1467 rel
->r_extern
= (info
& BFD_MACH_O_LE_EXTERN
) ? 1 : 0;
1471 /* Set syms_ptr_ptr and addend of RES. */
1474 bfd_mach_o_canonicalize_non_scattered_reloc (bfd
*abfd
,
1475 bfd_mach_o_reloc_info
*reloc
,
1476 arelent
*res
, asymbol
**syms
)
1478 bfd_mach_o_data_struct
*mdata
= bfd_mach_o_get_data (abfd
);
1482 /* Non-scattered relocation. */
1483 reloc
->r_scattered
= 0;
1486 num
= reloc
->r_value
;
1488 if (reloc
->r_extern
)
1490 /* PR 17512: file: 8396-1185-0.004. */
1491 if (num
>= (unsigned) bfd_mach_o_count_symbols (abfd
))
1492 sym
= bfd_und_section_ptr
->symbol_ptr_ptr
;
1493 else if (syms
== NULL
)
1494 sym
= bfd_und_section_ptr
->symbol_ptr_ptr
;
1496 /* An external symbol number. */
1499 else if (num
== 0x00ffffff || num
== 0)
1501 /* The 'symnum' in a non-scattered PAIR is 0x00ffffff. But as this
1502 is generic code, we don't know wether this is really a PAIR.
1503 This value is almost certainly not a valid section number, hence
1504 this specific case to avoid an assertion failure.
1505 Target specific swap_reloc_in routine should adjust that. */
1506 sym
= bfd_abs_section_ptr
->symbol_ptr_ptr
;
1510 /* PR 17512: file: 006-2964-0.004. */
1511 if (num
> mdata
->nsects
)
1513 _bfd_error_handler (_("\
1514 malformed mach-o reloc: section index is greater than the number of sections"));
1518 /* A section number. */
1519 sym
= mdata
->sections
[num
- 1]->bfdsection
->symbol_ptr_ptr
;
1520 /* For a symbol defined in section S, the addend (stored in the
1521 binary) contains the address of the section. To comply with
1522 bfd convention, subtract the section address.
1523 Use the address from the header, so that the user can modify
1524 the vma of the section. */
1525 res
->addend
= -mdata
->sections
[num
- 1]->addr
;
1528 /* Note: Pairs for PPC LO/HI/HA are not scattered, but contain the offset
1529 in the lower 16bits of the address value. So we have to find the
1530 'symbol' from the preceding reloc. We do this even though the
1531 section symbol is probably not needed here, because NULL symbol
1532 values cause an assert in generic BFD code. This must be done in
1533 the PPC swap_reloc_in routine. */
1534 res
->sym_ptr_ptr
= sym
;
1539 /* Do most of the work for canonicalize_relocs on RAW: create internal
1540 representation RELOC and set most fields of RES using symbol table SYMS.
1541 Each target still has to set the howto of RES and possibly adjust other
1543 Previously the Mach-O hook point was simply swap_in, but some targets
1544 (like arm64) don't follow the generic rules (symnum is a value for the
1545 non-scattered relocation ADDEND). */
1548 bfd_mach_o_pre_canonicalize_one_reloc (bfd
*abfd
,
1549 struct mach_o_reloc_info_external
*raw
,
1550 bfd_mach_o_reloc_info
*reloc
,
1551 arelent
*res
, asymbol
**syms
)
1553 bfd_mach_o_data_struct
*mdata
= bfd_mach_o_get_data (abfd
);
1556 addr
= bfd_get_32 (abfd
, raw
->r_address
);
1557 res
->sym_ptr_ptr
= NULL
;
1560 if (addr
& BFD_MACH_O_SR_SCATTERED
)
1563 bfd_vma symnum
= bfd_get_32 (abfd
, raw
->r_symbolnum
);
1565 /* Scattered relocation, can't be extern. */
1566 reloc
->r_scattered
= 1;
1567 reloc
->r_extern
= 0;
1569 /* Extract section and offset from r_value (symnum). */
1570 reloc
->r_value
= symnum
;
1571 /* FIXME: This breaks when a symbol in a reloc exactly follows the
1572 end of the data for the section (e.g. in a calculation of section
1573 data length). At present, the symbol will end up associated with
1574 the following section or, if it falls within alignment padding, as
1575 null - which will assert later. */
1576 for (j
= 0; j
< mdata
->nsects
; j
++)
1578 bfd_mach_o_section
*sect
= mdata
->sections
[j
];
1579 if (symnum
>= sect
->addr
&& symnum
< sect
->addr
+ sect
->size
)
1581 res
->sym_ptr_ptr
= sect
->bfdsection
->symbol_ptr_ptr
;
1582 res
->addend
= symnum
- sect
->addr
;
1587 /* Extract the info and address fields from r_address. */
1588 reloc
->r_type
= BFD_MACH_O_GET_SR_TYPE (addr
);
1589 reloc
->r_length
= BFD_MACH_O_GET_SR_LENGTH (addr
);
1590 reloc
->r_pcrel
= addr
& BFD_MACH_O_SR_PCREL
;
1591 reloc
->r_address
= BFD_MACH_O_GET_SR_TYPE (addr
);
1592 res
->address
= BFD_MACH_O_GET_SR_ADDRESS (addr
);
1596 /* Non-scattered relocation. */
1597 reloc
->r_scattered
= 0;
1598 reloc
->r_address
= addr
;
1599 res
->address
= addr
;
1601 /* The value and info fields have to be extracted dependent on target
1603 bfd_mach_o_swap_in_non_scattered_reloc (abfd
, reloc
, raw
->r_symbolnum
);
1605 if (!bfd_mach_o_canonicalize_non_scattered_reloc (abfd
, reloc
,
1610 /* We have set up a reloc with all the information present, so the swapper
1611 can modify address, value and addend fields, if necessary, to convey
1612 information in the generic BFD reloc that is mach-o specific. */
1618 bfd_mach_o_canonicalize_relocs (bfd
*abfd
, unsigned long filepos
,
1619 unsigned long count
,
1620 arelent
*res
, asymbol
**syms
)
1622 bfd_mach_o_backend_data
*bed
= bfd_mach_o_get_backend_data (abfd
);
1624 struct mach_o_reloc_info_external
*native_relocs
= NULL
;
1627 /* Allocate and read relocs. */
1628 if (_bfd_mul_overflow (count
, BFD_MACH_O_RELENT_SIZE
, &native_size
))
1629 /* PR 17512: file: 09477b57. */
1632 if (bfd_seek (abfd
, filepos
, SEEK_SET
) != 0)
1634 native_relocs
= (struct mach_o_reloc_info_external
*)
1635 _bfd_malloc_and_read (abfd
, native_size
, native_size
);
1636 if (native_relocs
== NULL
)
1639 for (i
= 0; i
< count
; i
++)
1641 if (!(*bed
->_bfd_mach_o_canonicalize_one_reloc
)(abfd
, &native_relocs
[i
],
1642 &res
[i
], syms
, res
))
1645 free (native_relocs
);
1649 free (native_relocs
);
1650 if (bfd_get_error () == bfd_error_no_error
)
1651 bfd_set_error (bfd_error_invalid_operation
);
1656 bfd_mach_o_canonicalize_reloc (bfd
*abfd
, asection
*asect
,
1657 arelent
**rels
, asymbol
**syms
)
1659 bfd_mach_o_backend_data
*bed
= bfd_mach_o_get_backend_data (abfd
);
1663 if (asect
->reloc_count
== 0)
1666 /* No need to go further if we don't know how to read relocs. */
1667 if (bed
->_bfd_mach_o_canonicalize_one_reloc
== NULL
)
1670 if (asect
->relocation
== NULL
)
1674 if (_bfd_mul_overflow (asect
->reloc_count
, sizeof (arelent
), &amt
))
1676 bfd_set_error (bfd_error_file_too_big
);
1679 res
= bfd_malloc (amt
);
1683 if (bfd_mach_o_canonicalize_relocs (abfd
, asect
->rel_filepos
,
1684 asect
->reloc_count
, res
, syms
) < 0)
1689 asect
->relocation
= res
;
1692 res
= asect
->relocation
;
1693 for (i
= 0; i
< asect
->reloc_count
; i
++)
1701 bfd_mach_o_get_dynamic_reloc_upper_bound (bfd
*abfd
)
1703 bfd_mach_o_data_struct
*mdata
= bfd_mach_o_get_data (abfd
);
1705 if (mdata
->dysymtab
== NULL
)
1707 return (mdata
->dysymtab
->nextrel
+ mdata
->dysymtab
->nlocrel
+ 1)
1708 * sizeof (arelent
*);
1712 bfd_mach_o_canonicalize_dynamic_reloc (bfd
*abfd
, arelent
**rels
,
1713 struct bfd_symbol
**syms
)
1715 bfd_mach_o_data_struct
*mdata
= bfd_mach_o_get_data (abfd
);
1716 bfd_mach_o_dysymtab_command
*dysymtab
= mdata
->dysymtab
;
1717 bfd_mach_o_backend_data
*bed
= bfd_mach_o_get_backend_data (abfd
);
1721 if (dysymtab
== NULL
)
1723 if (dysymtab
->nextrel
== 0 && dysymtab
->nlocrel
== 0)
1726 /* No need to go further if we don't know how to read relocs. */
1727 if (bed
->_bfd_mach_o_canonicalize_one_reloc
== NULL
)
1730 if (mdata
->dyn_reloc_cache
== NULL
)
1732 ufile_ptr filesize
= bfd_get_file_size (abfd
);
1737 if (dysymtab
->extreloff
> filesize
1738 || dysymtab
->nextrel
> ((filesize
- dysymtab
->extreloff
)
1739 / BFD_MACH_O_RELENT_SIZE
)
1740 || dysymtab
->locreloff
> filesize
1741 || dysymtab
->nlocrel
> ((filesize
- dysymtab
->locreloff
)
1742 / BFD_MACH_O_RELENT_SIZE
))
1744 bfd_set_error (bfd_error_file_truncated
);
1748 if (_bfd_mul_overflow (dysymtab
->nextrel
+ dysymtab
->nlocrel
,
1749 sizeof (arelent
), &amt
))
1751 bfd_set_error (bfd_error_file_too_big
);
1755 res
= bfd_malloc (amt
);
1759 if (bfd_mach_o_canonicalize_relocs (abfd
, dysymtab
->extreloff
,
1760 dysymtab
->nextrel
, res
, syms
) < 0)
1766 if (bfd_mach_o_canonicalize_relocs (abfd
, dysymtab
->locreloff
,
1768 res
+ dysymtab
->nextrel
, syms
) < 0)
1774 mdata
->dyn_reloc_cache
= res
;
1777 res
= mdata
->dyn_reloc_cache
;
1778 for (i
= 0; i
< dysymtab
->nextrel
+ dysymtab
->nlocrel
; i
++)
1784 /* In addition to the need to byte-swap the symbol number, the bit positions
1785 of the fields in the relocation information vary per target endian-ness. */
1788 bfd_mach_o_swap_out_non_scattered_reloc (bfd
*abfd
, unsigned char *fields
,
1789 bfd_mach_o_reloc_info
*rel
)
1791 unsigned char info
= 0;
1793 BFD_ASSERT (rel
->r_type
<= 15);
1794 BFD_ASSERT (rel
->r_length
<= 3);
1796 if (bfd_big_endian (abfd
))
1798 fields
[0] = (rel
->r_value
>> 16) & 0xff;
1799 fields
[1] = (rel
->r_value
>> 8) & 0xff;
1800 fields
[2] = rel
->r_value
& 0xff;
1801 info
|= rel
->r_type
<< BFD_MACH_O_BE_TYPE_SHIFT
;
1802 info
|= rel
->r_pcrel
? BFD_MACH_O_BE_PCREL
: 0;
1803 info
|= rel
->r_length
<< BFD_MACH_O_BE_LENGTH_SHIFT
;
1804 info
|= rel
->r_extern
? BFD_MACH_O_BE_EXTERN
: 0;
1808 fields
[2] = (rel
->r_value
>> 16) & 0xff;
1809 fields
[1] = (rel
->r_value
>> 8) & 0xff;
1810 fields
[0] = rel
->r_value
& 0xff;
1811 info
|= rel
->r_type
<< BFD_MACH_O_LE_TYPE_SHIFT
;
1812 info
|= rel
->r_pcrel
? BFD_MACH_O_LE_PCREL
: 0;
1813 info
|= rel
->r_length
<< BFD_MACH_O_LE_LENGTH_SHIFT
;
1814 info
|= rel
->r_extern
? BFD_MACH_O_LE_EXTERN
: 0;
1820 bfd_mach_o_write_relocs (bfd
*abfd
, bfd_mach_o_section
*section
)
1825 bfd_mach_o_backend_data
*bed
= bfd_mach_o_get_backend_data (abfd
);
1827 sec
= section
->bfdsection
;
1828 if (sec
->reloc_count
== 0)
1831 if (bed
->_bfd_mach_o_swap_reloc_out
== NULL
)
1834 if (bfd_seek (abfd
, section
->reloff
, SEEK_SET
) != 0)
1837 /* Convert and write. */
1838 entries
= section
->bfdsection
->orelocation
;
1839 for (i
= 0; i
< section
->nreloc
; i
++)
1841 arelent
*rel
= entries
[i
];
1842 struct mach_o_reloc_info_external raw
;
1843 bfd_mach_o_reloc_info info
, *pinfo
= &info
;
1845 /* Convert relocation to an intermediate representation. */
1846 if (!(*bed
->_bfd_mach_o_swap_reloc_out
) (rel
, pinfo
))
1849 /* Lower the relocation info. */
1850 if (pinfo
->r_scattered
)
1854 v
= BFD_MACH_O_SR_SCATTERED
1855 | (pinfo
->r_pcrel
? BFD_MACH_O_SR_PCREL
: 0)
1856 | BFD_MACH_O_SET_SR_LENGTH (pinfo
->r_length
)
1857 | BFD_MACH_O_SET_SR_TYPE (pinfo
->r_type
)
1858 | BFD_MACH_O_SET_SR_ADDRESS (pinfo
->r_address
);
1859 /* Note: scattered relocs have field in reverse order... */
1860 bfd_put_32 (abfd
, v
, raw
.r_address
);
1861 bfd_put_32 (abfd
, pinfo
->r_value
, raw
.r_symbolnum
);
1865 bfd_put_32 (abfd
, pinfo
->r_address
, raw
.r_address
);
1866 bfd_mach_o_swap_out_non_scattered_reloc (abfd
, raw
.r_symbolnum
,
1870 if (bfd_bwrite (&raw
, BFD_MACH_O_RELENT_SIZE
, abfd
)
1871 != BFD_MACH_O_RELENT_SIZE
)
1878 bfd_mach_o_write_section_32 (bfd
*abfd
, bfd_mach_o_section
*section
)
1880 struct mach_o_section_32_external raw
;
1882 memcpy (raw
.sectname
, section
->sectname
, 16);
1883 memcpy (raw
.segname
, section
->segname
, 16);
1884 bfd_h_put_32 (abfd
, section
->addr
, raw
.addr
);
1885 bfd_h_put_32 (abfd
, section
->size
, raw
.size
);
1886 bfd_h_put_32 (abfd
, section
->offset
, raw
.offset
);
1887 bfd_h_put_32 (abfd
, section
->align
, raw
.align
);
1888 bfd_h_put_32 (abfd
, section
->reloff
, raw
.reloff
);
1889 bfd_h_put_32 (abfd
, section
->nreloc
, raw
.nreloc
);
1890 bfd_h_put_32 (abfd
, section
->flags
, raw
.flags
);
1891 bfd_h_put_32 (abfd
, section
->reserved1
, raw
.reserved1
);
1892 bfd_h_put_32 (abfd
, section
->reserved2
, raw
.reserved2
);
1894 if (bfd_bwrite (&raw
, BFD_MACH_O_SECTION_SIZE
, abfd
)
1895 != BFD_MACH_O_SECTION_SIZE
)
1902 bfd_mach_o_write_section_64 (bfd
*abfd
, bfd_mach_o_section
*section
)
1904 struct mach_o_section_64_external raw
;
1906 memcpy (raw
.sectname
, section
->sectname
, 16);
1907 memcpy (raw
.segname
, section
->segname
, 16);
1908 bfd_h_put_64 (abfd
, section
->addr
, raw
.addr
);
1909 bfd_h_put_64 (abfd
, section
->size
, raw
.size
);
1910 bfd_h_put_32 (abfd
, section
->offset
, raw
.offset
);
1911 bfd_h_put_32 (abfd
, section
->align
, raw
.align
);
1912 bfd_h_put_32 (abfd
, section
->reloff
, raw
.reloff
);
1913 bfd_h_put_32 (abfd
, section
->nreloc
, raw
.nreloc
);
1914 bfd_h_put_32 (abfd
, section
->flags
, raw
.flags
);
1915 bfd_h_put_32 (abfd
, section
->reserved1
, raw
.reserved1
);
1916 bfd_h_put_32 (abfd
, section
->reserved2
, raw
.reserved2
);
1917 bfd_h_put_32 (abfd
, section
->reserved3
, raw
.reserved3
);
1919 if (bfd_bwrite (&raw
, BFD_MACH_O_SECTION_64_SIZE
, abfd
)
1920 != BFD_MACH_O_SECTION_64_SIZE
)
1927 bfd_mach_o_write_segment_32 (bfd
*abfd
, bfd_mach_o_load_command
*command
)
1929 struct mach_o_segment_command_32_external raw
;
1930 bfd_mach_o_segment_command
*seg
= &command
->command
.segment
;
1931 bfd_mach_o_section
*sec
;
1933 BFD_ASSERT (command
->type
== BFD_MACH_O_LC_SEGMENT
);
1935 for (sec
= seg
->sect_head
; sec
!= NULL
; sec
= sec
->next
)
1936 if (!bfd_mach_o_write_relocs (abfd
, sec
))
1939 memcpy (raw
.segname
, seg
->segname
, 16);
1940 bfd_h_put_32 (abfd
, seg
->vmaddr
, raw
.vmaddr
);
1941 bfd_h_put_32 (abfd
, seg
->vmsize
, raw
.vmsize
);
1942 bfd_h_put_32 (abfd
, seg
->fileoff
, raw
.fileoff
);
1943 bfd_h_put_32 (abfd
, seg
->filesize
, raw
.filesize
);
1944 bfd_h_put_32 (abfd
, seg
->maxprot
, raw
.maxprot
);
1945 bfd_h_put_32 (abfd
, seg
->initprot
, raw
.initprot
);
1946 bfd_h_put_32 (abfd
, seg
->nsects
, raw
.nsects
);
1947 bfd_h_put_32 (abfd
, seg
->flags
, raw
.flags
);
1949 if (bfd_seek (abfd
, command
->offset
+ BFD_MACH_O_LC_SIZE
, SEEK_SET
) != 0
1950 || bfd_bwrite (&raw
, sizeof (raw
), abfd
) != sizeof (raw
))
1953 for (sec
= seg
->sect_head
; sec
!= NULL
; sec
= sec
->next
)
1954 if (!bfd_mach_o_write_section_32 (abfd
, sec
))
1961 bfd_mach_o_write_segment_64 (bfd
*abfd
, bfd_mach_o_load_command
*command
)
1963 struct mach_o_segment_command_64_external raw
;
1964 bfd_mach_o_segment_command
*seg
= &command
->command
.segment
;
1965 bfd_mach_o_section
*sec
;
1967 BFD_ASSERT (command
->type
== BFD_MACH_O_LC_SEGMENT_64
);
1969 for (sec
= seg
->sect_head
; sec
!= NULL
; sec
= sec
->next
)
1970 if (!bfd_mach_o_write_relocs (abfd
, sec
))
1973 memcpy (raw
.segname
, seg
->segname
, 16);
1974 bfd_h_put_64 (abfd
, seg
->vmaddr
, raw
.vmaddr
);
1975 bfd_h_put_64 (abfd
, seg
->vmsize
, raw
.vmsize
);
1976 bfd_h_put_64 (abfd
, seg
->fileoff
, raw
.fileoff
);
1977 bfd_h_put_64 (abfd
, seg
->filesize
, raw
.filesize
);
1978 bfd_h_put_32 (abfd
, seg
->maxprot
, raw
.maxprot
);
1979 bfd_h_put_32 (abfd
, seg
->initprot
, raw
.initprot
);
1980 bfd_h_put_32 (abfd
, seg
->nsects
, raw
.nsects
);
1981 bfd_h_put_32 (abfd
, seg
->flags
, raw
.flags
);
1983 if (bfd_seek (abfd
, command
->offset
+ BFD_MACH_O_LC_SIZE
, SEEK_SET
) != 0
1984 || bfd_bwrite (&raw
, sizeof (raw
), abfd
) != sizeof (raw
))
1987 for (sec
= seg
->sect_head
; sec
!= NULL
; sec
= sec
->next
)
1988 if (!bfd_mach_o_write_section_64 (abfd
, sec
))
1995 bfd_mach_o_write_symtab_content (bfd
*abfd
, bfd_mach_o_symtab_command
*sym
)
1997 bfd_mach_o_data_struct
*mdata
= bfd_mach_o_get_data (abfd
);
1999 unsigned int wide
= bfd_mach_o_wide_p (abfd
);
2000 struct bfd_strtab_hash
*strtab
;
2001 asymbol
**symbols
= bfd_get_outsymbols (abfd
);
2004 /* Write the symbols first. */
2005 if (bfd_seek (abfd
, sym
->symoff
, SEEK_SET
) != 0)
2008 strtab
= _bfd_stringtab_init ();
2013 /* Although we don't strictly need to do this, for compatibility with
2014 Darwin system tools, actually output an empty string for the index
2016 _bfd_stringtab_add (strtab
, "", true, false);
2018 for (i
= 0; i
< sym
->nsyms
; i
++)
2020 bfd_size_type str_index
;
2021 bfd_mach_o_asymbol
*s
= (bfd_mach_o_asymbol
*)symbols
[i
];
2023 if (s
->symbol
.name
== 0 || s
->symbol
.name
[0] == '\0')
2024 /* An index of 0 always means the empty string. */
2028 str_index
= _bfd_stringtab_add (strtab
, s
->symbol
.name
, true, false);
2030 if (str_index
== (bfd_size_type
) -1)
2036 struct mach_o_nlist_64_external raw
;
2038 bfd_h_put_32 (abfd
, str_index
, raw
.n_strx
);
2039 bfd_h_put_8 (abfd
, s
->n_type
, raw
.n_type
);
2040 bfd_h_put_8 (abfd
, s
->n_sect
, raw
.n_sect
);
2041 bfd_h_put_16 (abfd
, s
->n_desc
, raw
.n_desc
);
2042 bfd_h_put_64 (abfd
, s
->symbol
.section
->vma
+ s
->symbol
.value
,
2045 if (bfd_bwrite (&raw
, sizeof (raw
), abfd
) != sizeof (raw
))
2050 struct mach_o_nlist_external raw
;
2052 bfd_h_put_32 (abfd
, str_index
, raw
.n_strx
);
2053 bfd_h_put_8 (abfd
, s
->n_type
, raw
.n_type
);
2054 bfd_h_put_8 (abfd
, s
->n_sect
, raw
.n_sect
);
2055 bfd_h_put_16 (abfd
, s
->n_desc
, raw
.n_desc
);
2056 bfd_h_put_32 (abfd
, s
->symbol
.section
->vma
+ s
->symbol
.value
,
2059 if (bfd_bwrite (&raw
, sizeof (raw
), abfd
) != sizeof (raw
))
2063 sym
->strsize
= _bfd_stringtab_size (strtab
);
2064 sym
->stroff
= mdata
->filelen
;
2065 mdata
->filelen
+= sym
->strsize
;
2067 if (bfd_seek (abfd
, sym
->stroff
, SEEK_SET
) != 0)
2070 if (!_bfd_stringtab_emit (abfd
, strtab
))
2073 /* Pad string table. */
2074 padlen
= bfd_mach_o_pad4 (abfd
, sym
->strsize
);
2077 mdata
->filelen
+= padlen
;
2078 sym
->strsize
+= padlen
;
2083 _bfd_stringtab_free (strtab
);
2089 bfd_mach_o_write_symtab (bfd
*abfd
, bfd_mach_o_load_command
*command
)
2091 bfd_mach_o_symtab_command
*sym
= &command
->command
.symtab
;
2092 struct mach_o_symtab_command_external raw
;
2094 BFD_ASSERT (command
->type
== BFD_MACH_O_LC_SYMTAB
);
2097 bfd_h_put_32 (abfd
, sym
->symoff
, raw
.symoff
);
2098 bfd_h_put_32 (abfd
, sym
->nsyms
, raw
.nsyms
);
2099 bfd_h_put_32 (abfd
, sym
->stroff
, raw
.stroff
);
2100 bfd_h_put_32 (abfd
, sym
->strsize
, raw
.strsize
);
2102 if (bfd_seek (abfd
, command
->offset
+ BFD_MACH_O_LC_SIZE
, SEEK_SET
) != 0
2103 || bfd_bwrite (&raw
, sizeof (raw
), abfd
) != sizeof (raw
))
2109 /* Count the number of indirect symbols in the image.
2110 Requires that the sections are in their final order. */
2113 bfd_mach_o_count_indirect_symbols (bfd
*abfd
, bfd_mach_o_data_struct
*mdata
)
2116 unsigned int nisyms
= 0;
2118 for (i
= 0; i
< mdata
->nsects
; ++i
)
2120 bfd_mach_o_section
*sec
= mdata
->sections
[i
];
2122 switch (sec
->flags
& BFD_MACH_O_SECTION_TYPE_MASK
)
2124 case BFD_MACH_O_S_NON_LAZY_SYMBOL_POINTERS
:
2125 case BFD_MACH_O_S_LAZY_SYMBOL_POINTERS
:
2126 case BFD_MACH_O_S_SYMBOL_STUBS
:
2127 nisyms
+= bfd_mach_o_section_get_nbr_indirect (abfd
, sec
);
2136 /* Create the dysymtab. */
2139 bfd_mach_o_build_dysymtab (bfd
*abfd
, bfd_mach_o_dysymtab_command
*cmd
)
2141 bfd_mach_o_data_struct
*mdata
= bfd_mach_o_get_data (abfd
);
2144 We are not going to try and fill these in yet and, moreover, we are
2145 going to bail if they are already set. */
2146 if (cmd
->nmodtab
!= 0
2148 || cmd
->nextrefsyms
!= 0)
2150 _bfd_error_handler (_("sorry: modtab, toc and extrefsyms are not yet"
2151 " implemented for dysymtab commands."));
2157 if (bfd_get_symcount (abfd
) > 0)
2159 asymbol
**symbols
= bfd_get_outsymbols (abfd
);
2162 /* Count the number of each kind of symbol. */
2163 for (i
= 0; i
< bfd_get_symcount (abfd
); ++i
)
2165 bfd_mach_o_asymbol
*s
= (bfd_mach_o_asymbol
*)symbols
[i
];
2166 if (s
->n_type
& (BFD_MACH_O_N_EXT
| BFD_MACH_O_N_PEXT
))
2170 cmd
->iextdefsym
= i
;
2171 for (; i
< bfd_get_symcount (abfd
); ++i
)
2173 bfd_mach_o_asymbol
*s
= (bfd_mach_o_asymbol
*)symbols
[i
];
2174 if ((s
->n_type
& BFD_MACH_O_N_TYPE
) == BFD_MACH_O_N_UNDF
)
2177 cmd
->nextdefsym
= i
- cmd
->nlocalsym
;
2178 cmd
->iundefsym
= cmd
->nextdefsym
+ cmd
->iextdefsym
;
2179 cmd
->nundefsym
= bfd_get_symcount (abfd
)
2186 cmd
->iextdefsym
= 0;
2187 cmd
->nextdefsym
= 0;
2192 cmd
->nindirectsyms
= bfd_mach_o_count_indirect_symbols (abfd
, mdata
);
2193 if (cmd
->nindirectsyms
> 0)
2199 mdata
->filelen
= FILE_ALIGN (mdata
->filelen
, 2);
2200 cmd
->indirectsymoff
= mdata
->filelen
;
2201 if (_bfd_mul_overflow (cmd
->nindirectsyms
, 4, &amt
))
2203 mdata
->filelen
+= amt
;
2205 cmd
->indirect_syms
= bfd_zalloc (abfd
, amt
);
2206 if (cmd
->indirect_syms
== NULL
)
2210 for (i
= 0; i
< mdata
->nsects
; ++i
)
2212 bfd_mach_o_section
*sec
= mdata
->sections
[i
];
2214 switch (sec
->flags
& BFD_MACH_O_SECTION_TYPE_MASK
)
2216 case BFD_MACH_O_S_NON_LAZY_SYMBOL_POINTERS
:
2217 case BFD_MACH_O_S_LAZY_SYMBOL_POINTERS
:
2218 case BFD_MACH_O_S_SYMBOL_STUBS
:
2221 bfd_mach_o_asymbol
**isyms
= sec
->indirect_syms
;
2223 num
= bfd_mach_o_section_get_nbr_indirect (abfd
, sec
);
2224 if (isyms
== NULL
|| num
== 0)
2226 /* Record the starting index in the reserved1 field. */
2228 for (j
= 0; j
< num
; j
++, n
++)
2230 if (isyms
[j
] == NULL
)
2231 cmd
->indirect_syms
[n
] = BFD_MACH_O_INDIRECT_SYM_LOCAL
;
2232 else if (isyms
[j
]->symbol
.section
== bfd_abs_section_ptr
2233 && ! (isyms
[j
]->n_type
& BFD_MACH_O_N_EXT
))
2234 cmd
->indirect_syms
[n
] = BFD_MACH_O_INDIRECT_SYM_LOCAL
2235 | BFD_MACH_O_INDIRECT_SYM_ABS
;
2237 cmd
->indirect_syms
[n
] = isyms
[j
]->symbol
.udata
.i
;
2250 /* Write a dysymtab command.
2251 TODO: Possibly coalesce writes of smaller objects. */
2254 bfd_mach_o_write_dysymtab (bfd
*abfd
, bfd_mach_o_load_command
*command
)
2256 bfd_mach_o_dysymtab_command
*cmd
= &command
->command
.dysymtab
;
2258 BFD_ASSERT (command
->type
== BFD_MACH_O_LC_DYSYMTAB
);
2260 if (cmd
->nmodtab
!= 0)
2264 if (bfd_seek (abfd
, cmd
->modtaboff
, SEEK_SET
) != 0)
2267 for (i
= 0; i
< cmd
->nmodtab
; i
++)
2269 bfd_mach_o_dylib_module
*module
= &cmd
->dylib_module
[i
];
2273 iinit
= module
->iinit
& 0xffff;
2274 iinit
|= ((module
->iterm
& 0xffff) << 16);
2276 ninit
= module
->ninit
& 0xffff;
2277 ninit
|= ((module
->nterm
& 0xffff) << 16);
2279 if (bfd_mach_o_wide_p (abfd
))
2281 struct mach_o_dylib_module_64_external w
;
2283 bfd_h_put_32 (abfd
, module
->module_name_idx
, &w
.module_name
);
2284 bfd_h_put_32 (abfd
, module
->iextdefsym
, &w
.iextdefsym
);
2285 bfd_h_put_32 (abfd
, module
->nextdefsym
, &w
.nextdefsym
);
2286 bfd_h_put_32 (abfd
, module
->irefsym
, &w
.irefsym
);
2287 bfd_h_put_32 (abfd
, module
->nrefsym
, &w
.nrefsym
);
2288 bfd_h_put_32 (abfd
, module
->ilocalsym
, &w
.ilocalsym
);
2289 bfd_h_put_32 (abfd
, module
->nlocalsym
, &w
.nlocalsym
);
2290 bfd_h_put_32 (abfd
, module
->iextrel
, &w
.iextrel
);
2291 bfd_h_put_32 (abfd
, module
->nextrel
, &w
.nextrel
);
2292 bfd_h_put_32 (abfd
, iinit
, &w
.iinit_iterm
);
2293 bfd_h_put_32 (abfd
, ninit
, &w
.ninit_nterm
);
2294 bfd_h_put_64 (abfd
, module
->objc_module_info_addr
,
2295 &w
.objc_module_info_addr
);
2296 bfd_h_put_32 (abfd
, module
->objc_module_info_size
,
2297 &w
.objc_module_info_size
);
2299 if (bfd_bwrite ((void *) &w
, sizeof (w
), abfd
) != sizeof (w
))
2304 struct mach_o_dylib_module_external n
;
2306 bfd_h_put_32 (abfd
, module
->module_name_idx
, &n
.module_name
);
2307 bfd_h_put_32 (abfd
, module
->iextdefsym
, &n
.iextdefsym
);
2308 bfd_h_put_32 (abfd
, module
->nextdefsym
, &n
.nextdefsym
);
2309 bfd_h_put_32 (abfd
, module
->irefsym
, &n
.irefsym
);
2310 bfd_h_put_32 (abfd
, module
->nrefsym
, &n
.nrefsym
);
2311 bfd_h_put_32 (abfd
, module
->ilocalsym
, &n
.ilocalsym
);
2312 bfd_h_put_32 (abfd
, module
->nlocalsym
, &n
.nlocalsym
);
2313 bfd_h_put_32 (abfd
, module
->iextrel
, &n
.iextrel
);
2314 bfd_h_put_32 (abfd
, module
->nextrel
, &n
.nextrel
);
2315 bfd_h_put_32 (abfd
, iinit
, &n
.iinit_iterm
);
2316 bfd_h_put_32 (abfd
, ninit
, &n
.ninit_nterm
);
2317 bfd_h_put_32 (abfd
, module
->objc_module_info_addr
,
2318 &n
.objc_module_info_addr
);
2319 bfd_h_put_32 (abfd
, module
->objc_module_info_size
,
2320 &n
.objc_module_info_size
);
2322 if (bfd_bwrite ((void *) &n
, sizeof (n
), abfd
) != sizeof (n
))
2332 if (bfd_seek (abfd
, cmd
->tocoff
, SEEK_SET
) != 0)
2335 for (i
= 0; i
< cmd
->ntoc
; i
++)
2337 struct mach_o_dylib_table_of_contents_external raw
;
2338 bfd_mach_o_dylib_table_of_content
*toc
= &cmd
->dylib_toc
[i
];
2340 bfd_h_put_32 (abfd
, toc
->symbol_index
, &raw
.symbol_index
);
2341 bfd_h_put_32 (abfd
, toc
->module_index
, &raw
.module_index
);
2343 if (bfd_bwrite (&raw
, sizeof (raw
), abfd
) != sizeof (raw
))
2348 if (cmd
->nindirectsyms
> 0)
2352 if (bfd_seek (abfd
, cmd
->indirectsymoff
, SEEK_SET
) != 0)
2355 for (i
= 0; i
< cmd
->nindirectsyms
; ++i
)
2357 unsigned char raw
[4];
2359 bfd_h_put_32 (abfd
, cmd
->indirect_syms
[i
], &raw
);
2360 if (bfd_bwrite (raw
, sizeof (raw
), abfd
) != sizeof (raw
))
2365 if (cmd
->nextrefsyms
!= 0)
2369 if (bfd_seek (abfd
, cmd
->extrefsymoff
, SEEK_SET
) != 0)
2372 for (i
= 0; i
< cmd
->nextrefsyms
; i
++)
2375 unsigned char raw
[4];
2376 bfd_mach_o_dylib_reference
*ref
= &cmd
->ext_refs
[i
];
2378 /* Fields isym and flags are written as bit-fields, thus we need
2379 a specific processing for endianness. */
2381 if (bfd_big_endian (abfd
))
2383 v
= ((ref
->isym
& 0xffffff) << 8);
2384 v
|= ref
->flags
& 0xff;
2388 v
= ref
->isym
& 0xffffff;
2389 v
|= ((ref
->flags
& 0xff) << 24);
2392 bfd_h_put_32 (abfd
, v
, raw
);
2393 if (bfd_bwrite (raw
, sizeof (raw
), abfd
) != sizeof (raw
))
2399 if (bfd_seek (abfd
, command
->offset
+ BFD_MACH_O_LC_SIZE
, SEEK_SET
) != 0)
2403 struct mach_o_dysymtab_command_external raw
;
2405 bfd_h_put_32 (abfd
, cmd
->ilocalsym
, &raw
.ilocalsym
);
2406 bfd_h_put_32 (abfd
, cmd
->nlocalsym
, &raw
.nlocalsym
);
2407 bfd_h_put_32 (abfd
, cmd
->iextdefsym
, &raw
.iextdefsym
);
2408 bfd_h_put_32 (abfd
, cmd
->nextdefsym
, &raw
.nextdefsym
);
2409 bfd_h_put_32 (abfd
, cmd
->iundefsym
, &raw
.iundefsym
);
2410 bfd_h_put_32 (abfd
, cmd
->nundefsym
, &raw
.nundefsym
);
2411 bfd_h_put_32 (abfd
, cmd
->tocoff
, &raw
.tocoff
);
2412 bfd_h_put_32 (abfd
, cmd
->ntoc
, &raw
.ntoc
);
2413 bfd_h_put_32 (abfd
, cmd
->modtaboff
, &raw
.modtaboff
);
2414 bfd_h_put_32 (abfd
, cmd
->nmodtab
, &raw
.nmodtab
);
2415 bfd_h_put_32 (abfd
, cmd
->extrefsymoff
, &raw
.extrefsymoff
);
2416 bfd_h_put_32 (abfd
, cmd
->nextrefsyms
, &raw
.nextrefsyms
);
2417 bfd_h_put_32 (abfd
, cmd
->indirectsymoff
, &raw
.indirectsymoff
);
2418 bfd_h_put_32 (abfd
, cmd
->nindirectsyms
, &raw
.nindirectsyms
);
2419 bfd_h_put_32 (abfd
, cmd
->extreloff
, &raw
.extreloff
);
2420 bfd_h_put_32 (abfd
, cmd
->nextrel
, &raw
.nextrel
);
2421 bfd_h_put_32 (abfd
, cmd
->locreloff
, &raw
.locreloff
);
2422 bfd_h_put_32 (abfd
, cmd
->nlocrel
, &raw
.nlocrel
);
2424 if (bfd_bwrite (&raw
, sizeof (raw
), abfd
) != sizeof (raw
))
2432 bfd_mach_o_primary_symbol_sort_key (bfd_mach_o_asymbol
*s
)
2434 unsigned mtyp
= s
->n_type
& BFD_MACH_O_N_TYPE
;
2436 /* Just leave debug symbols where they are (pretend they are local, and
2437 then they will just be sorted on position). */
2438 if (s
->n_type
& BFD_MACH_O_N_STAB
)
2441 /* Local (we should never see an undefined local AFAICT). */
2442 if (! (s
->n_type
& (BFD_MACH_O_N_EXT
| BFD_MACH_O_N_PEXT
)))
2445 /* Common symbols look like undefined externs. */
2446 if (mtyp
== BFD_MACH_O_N_UNDF
)
2449 /* A defined non-local, non-debug symbol. */
2454 bfd_mach_o_cf_symbols (const void *a
, const void *b
)
2456 bfd_mach_o_asymbol
*sa
= *(bfd_mach_o_asymbol
**) a
;
2457 bfd_mach_o_asymbol
*sb
= *(bfd_mach_o_asymbol
**) b
;
2458 unsigned int soa
, sob
;
2460 soa
= bfd_mach_o_primary_symbol_sort_key (sa
);
2461 sob
= bfd_mach_o_primary_symbol_sort_key (sb
);
2468 /* If it's local or stab, just preserve the input order. */
2471 if (sa
->symbol
.udata
.i
< sb
->symbol
.udata
.i
)
2473 if (sa
->symbol
.udata
.i
> sb
->symbol
.udata
.i
)
2476 /* This is probably an error. */
2480 /* The second sort key is name. */
2481 return strcmp (sa
->symbol
.name
, sb
->symbol
.name
);
2484 /* Process the symbols.
2486 This should be OK for single-module files - but it is not likely to work
2487 for multi-module shared libraries.
2489 (a) If the application has not filled in the relevant mach-o fields, make
2492 (b) Order them, like this:
2495 ( ii) external defined
2497 (iii) external undefined/common
2504 bfd_mach_o_mangle_symbols (bfd
*abfd
)
2507 asymbol
**symbols
= bfd_get_outsymbols (abfd
);
2509 if (symbols
== NULL
|| bfd_get_symcount (abfd
) == 0)
2512 for (i
= 0; i
< bfd_get_symcount (abfd
); i
++)
2514 bfd_mach_o_asymbol
*s
= (bfd_mach_o_asymbol
*)symbols
[i
];
2516 /* We use this value, which is out-of-range as a symbol index, to signal
2517 that the mach-o-specific data are not filled in and need to be created
2518 from the bfd values. It is much preferable for the application to do
2519 this, since more meaningful diagnostics can be made that way. */
2521 if (s
->symbol
.udata
.i
== SYM_MACHO_FIELDS_UNSET
)
2523 /* No symbol information has been set - therefore determine
2524 it from the bfd symbol flags/info. */
2525 if (s
->symbol
.section
== bfd_abs_section_ptr
)
2526 s
->n_type
= BFD_MACH_O_N_ABS
;
2527 else if (s
->symbol
.section
== bfd_und_section_ptr
)
2529 s
->n_type
= BFD_MACH_O_N_UNDF
;
2530 if (s
->symbol
.flags
& BSF_WEAK
)
2531 s
->n_desc
|= BFD_MACH_O_N_WEAK_REF
;
2532 /* mach-o automatically makes undefined symbols extern. */
2533 s
->n_type
|= BFD_MACH_O_N_EXT
;
2534 s
->symbol
.flags
|= BSF_GLOBAL
;
2536 else if (s
->symbol
.section
== bfd_com_section_ptr
)
2538 s
->n_type
= BFD_MACH_O_N_UNDF
| BFD_MACH_O_N_EXT
;
2539 s
->symbol
.flags
|= BSF_GLOBAL
;
2542 s
->n_type
= BFD_MACH_O_N_SECT
;
2545 /* Update external symbol bit in case objcopy changed it. */
2546 if (s
->symbol
.flags
& BSF_GLOBAL
)
2547 s
->n_type
|= BFD_MACH_O_N_EXT
;
2549 s
->n_type
&= ~BFD_MACH_O_N_EXT
;
2551 /* Put the section index in, where required. */
2552 if ((s
->symbol
.section
!= bfd_abs_section_ptr
2553 && s
->symbol
.section
!= bfd_und_section_ptr
2554 && s
->symbol
.section
!= bfd_com_section_ptr
)
2555 || ((s
->n_type
& BFD_MACH_O_N_STAB
) != 0
2556 && s
->symbol
.name
== NULL
))
2557 s
->n_sect
= s
->symbol
.section
->output_section
->target_index
;
2559 /* Number to preserve order for local and debug syms. */
2560 s
->symbol
.udata
.i
= i
;
2563 /* Sort the symbols. */
2564 qsort ((void *) symbols
, (size_t) bfd_get_symcount (abfd
),
2565 sizeof (asymbol
*), bfd_mach_o_cf_symbols
);
2567 for (i
= 0; i
< bfd_get_symcount (abfd
); ++i
)
2569 bfd_mach_o_asymbol
*s
= (bfd_mach_o_asymbol
*)symbols
[i
];
2570 s
->symbol
.udata
.i
= i
; /* renumber. */
2576 /* We build a flat table of sections, which can be re-ordered if necessary.
2577 Fill in the section number and other mach-o-specific data. */
2580 bfd_mach_o_mangle_sections (bfd
*abfd
, bfd_mach_o_data_struct
*mdata
)
2583 unsigned target_index
;
2587 nsect
= bfd_count_sections (abfd
);
2589 /* Don't do it if it's already set - assume the application knows what it's
2591 if (mdata
->nsects
== nsect
2592 && (mdata
->nsects
== 0 || mdata
->sections
!= NULL
))
2595 /* We need to check that this can be done... */
2598 _bfd_error_handler (_("mach-o: there are too many sections (%u)"
2599 " maximum is 255,\n"), nsect
);
2603 mdata
->nsects
= nsect
;
2604 amt
= mdata
->nsects
* sizeof (bfd_mach_o_section
*);
2605 mdata
->sections
= bfd_alloc (abfd
, amt
);
2606 if (mdata
->sections
== NULL
)
2609 /* Create Mach-O sections.
2610 Section type, attribute and align should have been set when the
2611 section was created - either read in or specified. */
2613 for (sec
= abfd
->sections
; sec
; sec
= sec
->next
)
2615 unsigned bfd_align
= bfd_section_alignment (sec
);
2616 bfd_mach_o_section
*msect
= bfd_mach_o_get_mach_o_section (sec
);
2618 mdata
->sections
[target_index
] = msect
;
2620 msect
->addr
= bfd_section_vma (sec
);
2621 msect
->size
= bfd_section_size (sec
);
2623 /* Use the largest alignment set, in case it was bumped after the
2624 section was created. */
2625 msect
->align
= msect
->align
> bfd_align
? msect
->align
: bfd_align
;
2628 sec
->target_index
= ++target_index
;
2635 bfd_mach_o_write_contents (bfd
*abfd
)
2637 bfd_mach_o_data_struct
*mdata
= bfd_mach_o_get_data (abfd
);
2638 bfd_mach_o_load_command
*cmd
;
2639 bfd_mach_o_symtab_command
*symtab
= NULL
;
2640 bfd_mach_o_dysymtab_command
*dysymtab
= NULL
;
2641 bfd_mach_o_segment_command
*linkedit
= NULL
;
2643 /* Make the commands, if not already present. */
2644 if (!abfd
->output_has_begun
&& !bfd_mach_o_build_commands (abfd
))
2646 abfd
->output_has_begun
= true;
2648 /* Write the header. */
2649 if (!bfd_mach_o_write_header (abfd
, &mdata
->header
))
2652 /* First pass: allocate the linkedit segment. */
2653 for (cmd
= mdata
->first_command
; cmd
!= NULL
; cmd
= cmd
->next
)
2656 case BFD_MACH_O_LC_SEGMENT_64
:
2657 case BFD_MACH_O_LC_SEGMENT
:
2658 if (strcmp (cmd
->command
.segment
.segname
, "__LINKEDIT") == 0)
2659 linkedit
= &cmd
->command
.segment
;
2661 case BFD_MACH_O_LC_SYMTAB
:
2662 symtab
= &cmd
->command
.symtab
;
2664 case BFD_MACH_O_LC_DYSYMTAB
:
2665 dysymtab
= &cmd
->command
.dysymtab
;
2667 case BFD_MACH_O_LC_DYLD_INFO
:
2669 bfd_mach_o_dyld_info_command
*di
= &cmd
->command
.dyld_info
;
2671 di
->rebase_off
= di
->rebase_size
!= 0 ? mdata
->filelen
: 0;
2672 mdata
->filelen
+= di
->rebase_size
;
2673 di
->bind_off
= di
->bind_size
!= 0 ? mdata
->filelen
: 0;
2674 mdata
->filelen
+= di
->bind_size
;
2675 di
->weak_bind_off
= di
->weak_bind_size
!= 0 ? mdata
->filelen
: 0;
2676 mdata
->filelen
+= di
->weak_bind_size
;
2677 di
->lazy_bind_off
= di
->lazy_bind_size
!= 0 ? mdata
->filelen
: 0;
2678 mdata
->filelen
+= di
->lazy_bind_size
;
2679 di
->export_off
= di
->export_size
!= 0 ? mdata
->filelen
: 0;
2680 mdata
->filelen
+= di
->export_size
;
2683 case BFD_MACH_O_LC_LOAD_DYLIB
:
2684 case BFD_MACH_O_LC_LOAD_DYLINKER
:
2685 case BFD_MACH_O_LC_MAIN
:
2686 /* Nothing to do. */
2690 (_("unable to allocate data for load command %#x"),
2695 /* Specially handle symtab and dysymtab. */
2697 /* Pre-allocate the symbol table (but not the string table). The reason
2698 is that the dysymtab is after the symbol table but before the string
2699 table (required by the native strip tool). */
2702 unsigned int symlen
;
2703 unsigned int wide
= bfd_mach_o_wide_p (abfd
);
2705 symlen
= wide
? BFD_MACH_O_NLIST_64_SIZE
: BFD_MACH_O_NLIST_SIZE
;
2707 /* Align for symbols. */
2708 mdata
->filelen
= FILE_ALIGN (mdata
->filelen
, wide
? 3 : 2);
2709 symtab
->symoff
= mdata
->filelen
;
2711 symtab
->nsyms
= bfd_get_symcount (abfd
);
2712 mdata
->filelen
+= symtab
->nsyms
* symlen
;
2715 /* Build the dysymtab. */
2716 if (dysymtab
!= NULL
)
2717 if (!bfd_mach_o_build_dysymtab (abfd
, dysymtab
))
2720 /* Write symtab and strtab. */
2722 if (!bfd_mach_o_write_symtab_content (abfd
, symtab
))
2725 /* Adjust linkedit size. */
2726 if (linkedit
!= NULL
)
2728 /* bfd_vma pagemask = bfd_mach_o_get_backend_data (abfd)->page_size - 1; */
2730 linkedit
->vmsize
= mdata
->filelen
- linkedit
->fileoff
;
2731 /* linkedit->vmsize = (linkedit->vmsize + pagemask) & ~pagemask; */
2732 linkedit
->filesize
= mdata
->filelen
- linkedit
->fileoff
;
2734 linkedit
->initprot
= BFD_MACH_O_PROT_READ
;
2735 linkedit
->maxprot
= BFD_MACH_O_PROT_READ
| BFD_MACH_O_PROT_WRITE
2736 | BFD_MACH_O_PROT_EXECUTE
;
2739 /* Second pass: write commands. */
2740 for (cmd
= mdata
->first_command
; cmd
!= NULL
; cmd
= cmd
->next
)
2742 struct mach_o_load_command_external raw
;
2743 unsigned long typeflag
;
2745 typeflag
= cmd
->type
| (cmd
->type_required
? BFD_MACH_O_LC_REQ_DYLD
: 0);
2747 bfd_h_put_32 (abfd
, typeflag
, raw
.cmd
);
2748 bfd_h_put_32 (abfd
, cmd
->len
, raw
.cmdsize
);
2750 if (bfd_seek (abfd
, cmd
->offset
, SEEK_SET
) != 0
2751 || bfd_bwrite (&raw
, BFD_MACH_O_LC_SIZE
, abfd
) != 8)
2756 case BFD_MACH_O_LC_SEGMENT
:
2757 if (!bfd_mach_o_write_segment_32 (abfd
, cmd
))
2760 case BFD_MACH_O_LC_SEGMENT_64
:
2761 if (!bfd_mach_o_write_segment_64 (abfd
, cmd
))
2764 case BFD_MACH_O_LC_SYMTAB
:
2765 if (!bfd_mach_o_write_symtab (abfd
, cmd
))
2768 case BFD_MACH_O_LC_DYSYMTAB
:
2769 if (!bfd_mach_o_write_dysymtab (abfd
, cmd
))
2772 case BFD_MACH_O_LC_THREAD
:
2773 case BFD_MACH_O_LC_UNIXTHREAD
:
2774 if (!bfd_mach_o_write_thread (abfd
, cmd
))
2777 case BFD_MACH_O_LC_LOAD_DYLIB
:
2778 if (!bfd_mach_o_write_dylib (abfd
, cmd
))
2781 case BFD_MACH_O_LC_LOAD_DYLINKER
:
2782 if (!bfd_mach_o_write_dylinker (abfd
, cmd
))
2785 case BFD_MACH_O_LC_MAIN
:
2786 if (!bfd_mach_o_write_main (abfd
, cmd
))
2789 case BFD_MACH_O_LC_DYLD_INFO
:
2790 if (!bfd_mach_o_write_dyld_info (abfd
, cmd
))
2795 (_("unable to write unknown load command %#x"),
2805 bfd_mach_o_append_section_to_segment (bfd_mach_o_segment_command
*seg
,
2806 bfd_mach_o_section
*s
)
2808 if (seg
->sect_head
== NULL
)
2811 seg
->sect_tail
->next
= s
;
2815 /* Create section Mach-O flags from BFD flags. */
2818 bfd_mach_o_set_section_flags_from_bfd (bfd
*abfd ATTRIBUTE_UNUSED
,
2822 bfd_mach_o_section
*s
= bfd_mach_o_get_mach_o_section (sec
);
2824 /* Create default flags. */
2825 bfd_flags
= bfd_section_flags (sec
);
2826 if ((bfd_flags
& SEC_CODE
) == SEC_CODE
)
2827 s
->flags
= BFD_MACH_O_S_ATTR_PURE_INSTRUCTIONS
2828 | BFD_MACH_O_S_ATTR_SOME_INSTRUCTIONS
2829 | BFD_MACH_O_S_REGULAR
;
2830 else if ((bfd_flags
& (SEC_ALLOC
| SEC_LOAD
)) == SEC_ALLOC
)
2831 s
->flags
= BFD_MACH_O_S_ZEROFILL
;
2832 else if (bfd_flags
& SEC_DEBUGGING
)
2833 s
->flags
= BFD_MACH_O_S_REGULAR
| BFD_MACH_O_S_ATTR_DEBUG
;
2835 s
->flags
= BFD_MACH_O_S_REGULAR
;
2839 bfd_mach_o_build_obj_seg_command (bfd
*abfd
, bfd_mach_o_segment_command
*seg
)
2841 bfd_mach_o_data_struct
*mdata
= bfd_mach_o_get_data (abfd
);
2845 seg
->fileoff
= mdata
->filelen
;
2846 seg
->initprot
= BFD_MACH_O_PROT_READ
| BFD_MACH_O_PROT_WRITE
2847 | BFD_MACH_O_PROT_EXECUTE
;
2848 seg
->maxprot
= seg
->initprot
;
2850 /* Append sections to the segment.
2852 This is a little tedious, we have to honor the need to account zerofill
2853 sections after all the rest. This forces us to do the calculation of
2854 total vmsize in three passes so that any alignment increments are
2855 properly accounted. */
2856 for (i
= 0; i
< mdata
->nsects
; ++i
)
2858 bfd_mach_o_section
*s
= mdata
->sections
[i
];
2859 asection
*sec
= s
->bfdsection
;
2861 /* Although we account for zerofill section sizes in vm order, they are
2862 placed in the file in source sequence. */
2863 bfd_mach_o_append_section_to_segment (seg
, s
);
2866 /* Zerofill sections have zero file size & offset, the only content
2867 written to the file is the symbols. */
2868 if ((s
->flags
& BFD_MACH_O_SECTION_TYPE_MASK
) == BFD_MACH_O_S_ZEROFILL
2869 || ((s
->flags
& BFD_MACH_O_SECTION_TYPE_MASK
)
2870 == BFD_MACH_O_S_GB_ZEROFILL
))
2873 /* The Darwin system tools (in MH_OBJECT files, at least) always account
2874 sections, even those with zero size. */
2877 seg
->vmsize
= FILE_ALIGN (seg
->vmsize
, s
->align
);
2878 seg
->vmsize
+= s
->size
;
2880 /* MH_OBJECT files have unaligned content. */
2883 seg
->filesize
= FILE_ALIGN (seg
->filesize
, s
->align
);
2884 mdata
->filelen
= FILE_ALIGN (mdata
->filelen
, s
->align
);
2886 seg
->filesize
+= s
->size
;
2888 /* The system tools write even zero-sized sections with an offset
2889 field set to the current file position. */
2890 s
->offset
= mdata
->filelen
;
2893 sec
->filepos
= s
->offset
;
2894 mdata
->filelen
+= s
->size
;
2897 /* Now pass through again, for zerofill, only now we just update the
2898 vmsize, and then for zerofill_GB. */
2899 for (j
= 0; j
< 2; j
++)
2904 stype
= BFD_MACH_O_S_ZEROFILL
;
2906 stype
= BFD_MACH_O_S_GB_ZEROFILL
;
2908 for (i
= 0; i
< mdata
->nsects
; ++i
)
2910 bfd_mach_o_section
*s
= mdata
->sections
[i
];
2912 if ((s
->flags
& BFD_MACH_O_SECTION_TYPE_MASK
) != stype
)
2917 seg
->vmsize
= FILE_ALIGN (seg
->vmsize
, s
->align
);
2918 seg
->vmsize
+= s
->size
;
2923 /* Allocate space for the relocations. */
2924 mdata
->filelen
= FILE_ALIGN (mdata
->filelen
, 2);
2926 for (i
= 0; i
< mdata
->nsects
; ++i
)
2928 bfd_mach_o_section
*ms
= mdata
->sections
[i
];
2929 asection
*sec
= ms
->bfdsection
;
2931 ms
->nreloc
= sec
->reloc_count
;
2932 if (ms
->nreloc
== 0)
2934 /* Clear nreloc and reloff if there is no relocs. */
2938 sec
->rel_filepos
= mdata
->filelen
;
2939 ms
->reloff
= sec
->rel_filepos
;
2940 mdata
->filelen
+= sec
->reloc_count
* BFD_MACH_O_RELENT_SIZE
;
2947 bfd_mach_o_build_exec_seg_command (bfd
*abfd
, bfd_mach_o_segment_command
*seg
)
2949 bfd_mach_o_data_struct
*mdata
= bfd_mach_o_get_data (abfd
);
2951 bfd_vma pagemask
= bfd_mach_o_get_backend_data (abfd
)->page_size
- 1;
2953 bfd_mach_o_section
*s
;
2957 seg
->fileoff
= mdata
->filelen
;
2962 /* Append sections to the segment. We assume they are properly ordered
2963 by vma (but we check that). */
2965 for (i
= 0; i
< mdata
->nsects
; ++i
)
2967 s
= mdata
->sections
[i
];
2969 /* Consider only sections for this segment. */
2970 if (strcmp (seg
->segname
, s
->segname
) != 0)
2973 bfd_mach_o_append_section_to_segment (seg
, s
);
2978 /* xgettext:c-format */
2979 (_("section address (%#" PRIx64
") "
2980 "below start of segment (%#" PRIx64
")"),
2981 (uint64_t) s
->addr
, (uint64_t) vma
);
2985 vma
= s
->addr
+ s
->size
;
2988 /* Set segment file offset: make it page aligned. */
2989 vma
= seg
->sect_head
->addr
;
2990 seg
->vmaddr
= vma
& ~pagemask
;
2991 if ((mdata
->filelen
& pagemask
) > (vma
& pagemask
))
2992 mdata
->filelen
+= pagemask
+ 1;
2993 seg
->fileoff
= mdata
->filelen
& ~pagemask
;
2994 mdata
->filelen
= seg
->fileoff
+ (vma
& pagemask
);
2996 /* Set section file offset. */
2997 for (s
= seg
->sect_head
; s
!= NULL
; s
= s
->next
)
2999 asection
*sec
= s
->bfdsection
;
3000 flagword flags
= bfd_section_flags (sec
);
3002 /* Adjust segment size. */
3003 seg
->vmsize
= FILE_ALIGN (seg
->vmsize
, s
->align
);
3004 seg
->vmsize
+= s
->size
;
3006 /* File offset and length. */
3007 seg
->filesize
= FILE_ALIGN (seg
->filesize
, s
->align
);
3009 if ((s
->flags
& BFD_MACH_O_SECTION_TYPE_MASK
) != BFD_MACH_O_S_ZEROFILL
3010 && ((s
->flags
& BFD_MACH_O_SECTION_TYPE_MASK
)
3011 != BFD_MACH_O_S_GB_ZEROFILL
))
3013 mdata
->filelen
= FILE_ALIGN (mdata
->filelen
, s
->align
);
3015 s
->offset
= mdata
->filelen
;
3016 s
->bfdsection
->filepos
= s
->offset
;
3018 seg
->filesize
+= s
->size
;
3019 mdata
->filelen
+= s
->size
;
3024 s
->bfdsection
->filepos
= 0;
3027 /* Set protection. */
3028 if (flags
& SEC_LOAD
)
3030 if (flags
& SEC_CODE
)
3031 seg
->initprot
|= BFD_MACH_O_PROT_READ
| BFD_MACH_O_PROT_EXECUTE
;
3032 if ((flags
& (SEC_DATA
| SEC_READONLY
)) == SEC_DATA
)
3033 seg
->initprot
|= BFD_MACH_O_PROT_WRITE
| BFD_MACH_O_PROT_READ
;
3036 /* Relocs shouldn't appear in non-object files. */
3037 if (s
->bfdsection
->reloc_count
!= 0)
3042 if (seg
->initprot
!= 0)
3043 seg
->maxprot
= BFD_MACH_O_PROT_READ
| BFD_MACH_O_PROT_WRITE
3044 | BFD_MACH_O_PROT_EXECUTE
;
3048 /* Round segment size (and file size). */
3049 seg
->vmsize
= (seg
->vmsize
+ pagemask
) & ~pagemask
;
3050 seg
->filesize
= (seg
->filesize
+ pagemask
) & ~pagemask
;
3051 mdata
->filelen
= (mdata
->filelen
+ pagemask
) & ~pagemask
;
3056 /* Layout the commands: set commands size and offset, set ncmds and sizeofcmds
3057 fields in header. */
3060 bfd_mach_o_layout_commands (bfd_mach_o_data_struct
*mdata
)
3062 unsigned wide
= mach_o_wide_p (&mdata
->header
);
3063 unsigned int hdrlen
;
3065 bfd_mach_o_load_command
*cmd
;
3069 hdrlen
= wide
? BFD_MACH_O_HEADER_64_SIZE
: BFD_MACH_O_HEADER_SIZE
;
3070 align
= wide
? 8 - 1 : 4 - 1;
3072 mdata
->header
.ncmds
= 0;
3074 for (cmd
= mdata
->first_command
; cmd
; cmd
= cmd
->next
)
3076 mdata
->header
.ncmds
++;
3077 cmd
->offset
= offset
;
3081 case BFD_MACH_O_LC_SEGMENT_64
:
3082 cmd
->len
= BFD_MACH_O_LC_SEGMENT_64_SIZE
3083 + BFD_MACH_O_SECTION_64_SIZE
* cmd
->command
.segment
.nsects
;
3085 case BFD_MACH_O_LC_SEGMENT
:
3086 cmd
->len
= BFD_MACH_O_LC_SEGMENT_SIZE
3087 + BFD_MACH_O_SECTION_SIZE
* cmd
->command
.segment
.nsects
;
3089 case BFD_MACH_O_LC_SYMTAB
:
3090 cmd
->len
= sizeof (struct mach_o_symtab_command_external
)
3091 + BFD_MACH_O_LC_SIZE
;
3093 case BFD_MACH_O_LC_DYSYMTAB
:
3094 cmd
->len
= sizeof (struct mach_o_dysymtab_command_external
)
3095 + BFD_MACH_O_LC_SIZE
;
3097 case BFD_MACH_O_LC_LOAD_DYLIB
:
3098 cmd
->len
= sizeof (struct mach_o_dylib_command_external
)
3099 + BFD_MACH_O_LC_SIZE
;
3100 cmd
->command
.dylib
.name_offset
= cmd
->len
;
3101 cmd
->len
+= strlen (cmd
->command
.dylib
.name_str
);
3102 cmd
->len
= (cmd
->len
+ align
) & ~align
;
3104 case BFD_MACH_O_LC_LOAD_DYLINKER
:
3105 cmd
->len
= sizeof (struct mach_o_str_command_external
)
3106 + BFD_MACH_O_LC_SIZE
;
3107 cmd
->command
.dylinker
.name_offset
= cmd
->len
;
3108 cmd
->len
+= strlen (cmd
->command
.dylinker
.name_str
);
3109 cmd
->len
= (cmd
->len
+ align
) & ~align
;
3111 case BFD_MACH_O_LC_MAIN
:
3112 cmd
->len
= sizeof (struct mach_o_entry_point_command_external
)
3113 + BFD_MACH_O_LC_SIZE
;
3115 case BFD_MACH_O_LC_DYLD_INFO
:
3116 cmd
->len
= sizeof (struct mach_o_dyld_info_command_external
)
3117 + BFD_MACH_O_LC_SIZE
;
3121 (_("unable to layout unknown load command %#x"),
3127 BFD_ASSERT (cmd
->len
% (align
+ 1) == 0);
3130 mdata
->header
.sizeofcmds
= offset
- hdrlen
;
3131 mdata
->filelen
= offset
;
3136 /* Subroutine of bfd_mach_o_build_commands: set type, name and nsects of a
3140 bfd_mach_o_init_segment (bfd_mach_o_data_struct
*mdata
,
3141 bfd_mach_o_load_command
*cmd
,
3142 const char *segname
, unsigned int nbr_sect
)
3144 bfd_mach_o_segment_command
*seg
= &cmd
->command
.segment
;
3145 unsigned wide
= mach_o_wide_p (&mdata
->header
);
3147 /* Init segment command. */
3148 cmd
->type
= wide
? BFD_MACH_O_LC_SEGMENT_64
: BFD_MACH_O_LC_SEGMENT
;
3149 cmd
->type_required
= false;
3151 strcpy (seg
->segname
, segname
);
3152 seg
->nsects
= nbr_sect
;
3162 seg
->sect_head
= NULL
;
3163 seg
->sect_tail
= NULL
;
3166 /* Build Mach-O load commands (currently assuming an MH_OBJECT file).
3167 TODO: Other file formats, rebuilding symtab/dysymtab commands for strip
3168 and copy functionality. */
3171 bfd_mach_o_build_commands (bfd
*abfd
)
3173 bfd_mach_o_data_struct
*mdata
= bfd_mach_o_get_data (abfd
);
3174 unsigned wide
= mach_o_wide_p (&mdata
->header
);
3175 unsigned int nbr_segcmd
= 0;
3176 bfd_mach_o_load_command
*commands
;
3177 unsigned int nbr_commands
;
3178 int symtab_idx
= -1;
3179 int dysymtab_idx
= -1;
3183 /* Return now if already built. */
3184 if (mdata
->header
.ncmds
!= 0)
3187 /* Fill in the file type, if not already set. */
3188 if (mdata
->header
.filetype
== 0)
3190 if (abfd
->flags
& EXEC_P
)
3191 mdata
->header
.filetype
= BFD_MACH_O_MH_EXECUTE
;
3192 else if (abfd
->flags
& DYNAMIC
)
3193 mdata
->header
.filetype
= BFD_MACH_O_MH_DYLIB
;
3195 mdata
->header
.filetype
= BFD_MACH_O_MH_OBJECT
;
3198 /* If hasn't already been done, flatten sections list, and sort
3199 if/when required. Must be done before the symbol table is adjusted,
3200 since that depends on properly numbered sections. */
3201 if (mdata
->nsects
== 0 || mdata
->sections
== NULL
)
3202 if (! bfd_mach_o_mangle_sections (abfd
, mdata
))
3205 /* Order the symbol table, fill-in/check mach-o specific fields and
3206 partition out any indirect symbols. */
3207 if (!bfd_mach_o_mangle_symbols (abfd
))
3210 /* Segment commands. */
3211 if (mdata
->header
.filetype
== BFD_MACH_O_MH_OBJECT
)
3213 /* Only one segment for all the sections. But the segment is
3214 optional if there is no sections. */
3215 nbr_segcmd
= (mdata
->nsects
> 0) ? 1 : 0;
3219 bfd_mach_o_section
*prev_sect
= NULL
;
3221 /* One pagezero segment and one linkedit segment. */
3224 /* Create one segment for associated segment name in sections.
3225 Assume that sections with the same segment name are consecutive. */
3226 for (i
= 0; i
< mdata
->nsects
; i
++)
3228 bfd_mach_o_section
*this_sect
= mdata
->sections
[i
];
3230 if (prev_sect
== NULL
3231 || strcmp (prev_sect
->segname
, this_sect
->segname
) != 0)
3234 prev_sect
= this_sect
;
3239 nbr_commands
= nbr_segcmd
;
3241 /* One command for the symbol table (only if there are symbols. */
3242 if (bfd_get_symcount (abfd
) > 0)
3243 symtab_idx
= nbr_commands
++;
3246 This is a rather crude test for whether we should build a dysymtab. */
3247 if (bfd_mach_o_should_emit_dysymtab ()
3248 && bfd_get_symcount (abfd
))
3250 /* If there should be a case where a dysymtab could be emitted without
3251 a symtab (seems improbable), this would need amending. */
3252 dysymtab_idx
= nbr_commands
++;
3255 /* Add an entry point command. */
3256 if (mdata
->header
.filetype
== BFD_MACH_O_MH_EXECUTE
3257 && bfd_get_start_address (abfd
) != 0)
3258 main_idx
= nbr_commands
++;
3260 /* Well, we must have a header, at least. */
3261 mdata
->filelen
= wide
? BFD_MACH_O_HEADER_64_SIZE
: BFD_MACH_O_HEADER_SIZE
;
3263 /* A bit unusual, but no content is valid;
3264 as -n empty.s -o empty.o */
3265 if (nbr_commands
== 0)
3267 /* Layout commands (well none...) and set headers command fields. */
3268 return bfd_mach_o_layout_commands (mdata
);
3271 /* Create commands for segments (and symtabs), prepend them. */
3272 commands
= bfd_zalloc (abfd
, nbr_commands
* sizeof (bfd_mach_o_load_command
));
3273 if (commands
== NULL
)
3275 for (i
= 0; i
< nbr_commands
- 1; i
++)
3276 commands
[i
].next
= &commands
[i
+ 1];
3277 commands
[nbr_commands
- 1].next
= mdata
->first_command
;
3278 if (mdata
->first_command
== NULL
)
3279 mdata
->last_command
= &commands
[nbr_commands
- 1];
3280 mdata
->first_command
= &commands
[0];
3282 if (mdata
->header
.filetype
== BFD_MACH_O_MH_OBJECT
&& nbr_segcmd
!= 0)
3284 /* For object file, there is only one segment. */
3285 bfd_mach_o_init_segment (mdata
, &commands
[0], "", mdata
->nsects
);
3287 else if (nbr_segcmd
!= 0)
3289 bfd_mach_o_load_command
*cmd
;
3291 BFD_ASSERT (nbr_segcmd
>= 2);
3295 bfd_mach_o_init_segment (mdata
, cmd
, "__PAGEZERO", 0);
3297 /* Segments from sections. */
3299 for (i
= 0; i
< mdata
->nsects
;)
3301 const char *segname
= mdata
->sections
[i
]->segname
;
3302 unsigned int nbr_sect
= 1;
3304 /* Count number of sections for this segment. */
3305 for (i
++; i
< mdata
->nsects
; i
++)
3306 if (strcmp (mdata
->sections
[i
]->segname
, segname
) == 0)
3311 bfd_mach_o_init_segment (mdata
, cmd
, segname
, nbr_sect
);
3316 bfd_mach_o_init_segment (mdata
, cmd
, "__LINKEDIT", 0);
3319 if (symtab_idx
>= 0)
3321 /* Init symtab command. */
3322 bfd_mach_o_load_command
*cmd
= &commands
[symtab_idx
];
3324 cmd
->type
= BFD_MACH_O_LC_SYMTAB
;
3325 cmd
->type_required
= false;
3328 /* If required, setup symtab command, see comment above about the quality
3330 if (dysymtab_idx
>= 0)
3332 bfd_mach_o_load_command
*cmd
= &commands
[dysymtab_idx
];
3334 cmd
->type
= BFD_MACH_O_LC_DYSYMTAB
;
3335 cmd
->type_required
= false;
3338 /* Create the main command. */
3341 bfd_mach_o_load_command
*cmd
= &commands
[main_idx
];
3343 cmd
->type
= BFD_MACH_O_LC_MAIN
;
3344 cmd
->type_required
= true;
3346 cmd
->command
.main
.entryoff
= 0;
3347 cmd
->command
.main
.stacksize
= 0;
3350 /* Layout commands. */
3351 if (! bfd_mach_o_layout_commands (mdata
))
3354 /* So, now we have sized the commands and the filelen set to that.
3355 Now we can build the segment command and set the section file offsets. */
3356 if (mdata
->header
.filetype
== BFD_MACH_O_MH_OBJECT
)
3358 for (i
= 0; i
< nbr_segcmd
; i
++)
3359 if (!bfd_mach_o_build_obj_seg_command
3360 (abfd
, &commands
[i
].command
.segment
))
3367 /* Skip pagezero and linkedit segments. */
3368 for (i
= 1; i
< nbr_segcmd
- 1; i
++)
3370 bfd_mach_o_segment_command
*seg
= &commands
[i
].command
.segment
;
3372 if (!bfd_mach_o_build_exec_seg_command (abfd
, seg
))
3375 if (seg
->vmaddr
+ seg
->vmsize
> maxvma
)
3376 maxvma
= seg
->vmaddr
+ seg
->vmsize
;
3379 /* Set the size of __PAGEZERO. */
3380 commands
[0].command
.segment
.vmsize
=
3381 commands
[1].command
.segment
.vmaddr
;
3383 /* Set the vma and fileoff of __LINKEDIT. */
3384 commands
[nbr_segcmd
- 1].command
.segment
.vmaddr
= maxvma
;
3385 commands
[nbr_segcmd
- 1].command
.segment
.fileoff
= mdata
->filelen
;
3387 /* Set entry point (once segments have been laid out). */
3389 commands
[main_idx
].command
.main
.entryoff
=
3390 bfd_get_start_address (abfd
) - commands
[1].command
.segment
.vmaddr
;
3396 /* Set the contents of a section. */
3399 bfd_mach_o_set_section_contents (bfd
*abfd
,
3401 const void * location
,
3403 bfd_size_type count
)
3407 /* Trying to write the first section contents will trigger the creation of
3408 the load commands if they are not already present. */
3409 if (!abfd
->output_has_begun
&& !bfd_mach_o_build_commands (abfd
))
3415 pos
= section
->filepos
+ offset
;
3416 if (bfd_seek (abfd
, pos
, SEEK_SET
) != 0
3417 || bfd_bwrite (location
, count
, abfd
) != count
)
3424 bfd_mach_o_sizeof_headers (bfd
*a ATTRIBUTE_UNUSED
,
3425 struct bfd_link_info
*info ATTRIBUTE_UNUSED
)
3430 /* Make an empty symbol. This is required only because
3431 bfd_make_section_anyway wants to create a symbol for the section. */
3434 bfd_mach_o_make_empty_symbol (bfd
*abfd
)
3436 asymbol
*new_symbol
;
3438 new_symbol
= bfd_zalloc (abfd
, sizeof (bfd_mach_o_asymbol
));
3439 if (new_symbol
== NULL
)
3441 new_symbol
->the_bfd
= abfd
;
3442 new_symbol
->udata
.i
= SYM_MACHO_FIELDS_UNSET
;
3447 bfd_mach_o_read_header (bfd
*abfd
, file_ptr hdr_off
, bfd_mach_o_header
*header
)
3449 struct mach_o_header_external raw
;
3451 bfd_vma (*get32
) (const void *) = NULL
;
3453 /* Just read the magic number. */
3454 if (bfd_seek (abfd
, hdr_off
, SEEK_SET
) != 0
3455 || bfd_bread (raw
.magic
, sizeof (raw
.magic
), abfd
) != 4)
3458 if (bfd_getb32 (raw
.magic
) == BFD_MACH_O_MH_MAGIC
)
3460 header
->byteorder
= BFD_ENDIAN_BIG
;
3461 header
->magic
= BFD_MACH_O_MH_MAGIC
;
3462 header
->version
= 1;
3465 else if (bfd_getl32 (raw
.magic
) == BFD_MACH_O_MH_MAGIC
)
3467 header
->byteorder
= BFD_ENDIAN_LITTLE
;
3468 header
->magic
= BFD_MACH_O_MH_MAGIC
;
3469 header
->version
= 1;
3472 else if (bfd_getb32 (raw
.magic
) == BFD_MACH_O_MH_MAGIC_64
)
3474 header
->byteorder
= BFD_ENDIAN_BIG
;
3475 header
->magic
= BFD_MACH_O_MH_MAGIC_64
;
3476 header
->version
= 2;
3479 else if (bfd_getl32 (raw
.magic
) == BFD_MACH_O_MH_MAGIC_64
)
3481 header
->byteorder
= BFD_ENDIAN_LITTLE
;
3482 header
->magic
= BFD_MACH_O_MH_MAGIC_64
;
3483 header
->version
= 2;
3488 header
->byteorder
= BFD_ENDIAN_UNKNOWN
;
3492 /* Once the size of the header is known, read the full header. */
3493 size
= mach_o_wide_p (header
) ?
3494 BFD_MACH_O_HEADER_64_SIZE
: BFD_MACH_O_HEADER_SIZE
;
3496 if (bfd_seek (abfd
, hdr_off
, SEEK_SET
) != 0
3497 || bfd_bread (&raw
, size
, abfd
) != size
)
3500 header
->cputype
= (*get32
) (raw
.cputype
);
3501 header
->cpusubtype
= (*get32
) (raw
.cpusubtype
);
3502 header
->filetype
= (*get32
) (raw
.filetype
);
3503 header
->ncmds
= (*get32
) (raw
.ncmds
);
3504 header
->sizeofcmds
= (*get32
) (raw
.sizeofcmds
);
3505 header
->flags
= (*get32
) (raw
.flags
);
3507 if (mach_o_wide_p (header
))
3508 header
->reserved
= (*get32
) (raw
.reserved
);
3510 header
->reserved
= 0;
3516 bfd_mach_o_new_section_hook (bfd
*abfd
, asection
*sec
)
3518 bfd_mach_o_section
*s
;
3519 unsigned bfdalign
= bfd_section_alignment (sec
);
3521 s
= bfd_mach_o_get_mach_o_section (sec
);
3525 static const mach_o_section_name_xlat
* xlat
;
3527 s
= (bfd_mach_o_section
*) bfd_zalloc (abfd
, sizeof (*s
));
3530 sec
->used_by_bfd
= s
;
3531 s
->bfdsection
= sec
;
3533 /* Create the Darwin seg/sect name pair from the bfd name.
3534 If this is a canonical name for which a specific paiting exists
3535 there will also be defined flags, type, attribute and alignment
3537 xlat
= bfd_mach_o_convert_section_name_to_mach_o (abfd
, sec
, s
);
3540 s
->flags
= xlat
->macho_sectype
| xlat
->macho_secattr
;
3541 s
->align
= xlat
->sectalign
> bfdalign
? xlat
->sectalign
3543 bfd_set_section_alignment (sec
, s
->align
);
3544 bfd_flags
= bfd_section_flags (sec
);
3545 if (bfd_flags
== SEC_NO_FLAGS
)
3546 bfd_set_section_flags (sec
, xlat
->bfd_flags
);
3549 /* Create default flags. */
3550 bfd_mach_o_set_section_flags_from_bfd (abfd
, sec
);
3553 return _bfd_generic_new_section_hook (abfd
, sec
);
3557 bfd_mach_o_init_section_from_mach_o (asection
*sec
, unsigned long prot
)
3560 bfd_mach_o_section
*section
;
3562 flags
= bfd_section_flags (sec
);
3563 section
= bfd_mach_o_get_mach_o_section (sec
);
3565 /* TODO: see if we should use the xlat system for doing this by
3566 preference and fall back to this for unknown sections. */
3568 if (flags
== SEC_NO_FLAGS
)
3570 /* Try to guess flags. */
3571 if (section
->flags
& BFD_MACH_O_S_ATTR_DEBUG
)
3572 flags
= SEC_DEBUGGING
;
3576 if ((section
->flags
& BFD_MACH_O_SECTION_TYPE_MASK
)
3577 != BFD_MACH_O_S_ZEROFILL
)
3580 if (prot
& BFD_MACH_O_PROT_EXECUTE
)
3582 if (prot
& BFD_MACH_O_PROT_WRITE
)
3584 else if (prot
& BFD_MACH_O_PROT_READ
)
3585 flags
|= SEC_READONLY
;
3591 if ((flags
& SEC_DEBUGGING
) == 0)
3595 if (section
->offset
!= 0)
3596 flags
|= SEC_HAS_CONTENTS
;
3597 if (section
->nreloc
!= 0)
3600 bfd_set_section_flags (sec
, flags
);
3602 sec
->vma
= section
->addr
;
3603 sec
->lma
= section
->addr
;
3604 sec
->size
= section
->size
;
3605 sec
->filepos
= section
->offset
;
3606 sec
->alignment_power
= section
->align
;
3607 sec
->segment_mark
= 0;
3608 sec
->reloc_count
= section
->nreloc
;
3609 sec
->rel_filepos
= section
->reloff
;
3613 bfd_mach_o_make_bfd_section (bfd
*abfd
,
3614 const unsigned char *segname
,
3615 const unsigned char *sectname
)
3620 bfd_mach_o_convert_section_name_to_bfd
3621 (abfd
, (const char *)segname
, (const char *)sectname
, &sname
, &flags
);
3625 return bfd_make_section_anyway_with_flags (abfd
, sname
, flags
);
3629 bfd_mach_o_read_section_32 (bfd
*abfd
, unsigned long prot
)
3631 struct mach_o_section_32_external raw
;
3633 bfd_mach_o_section
*section
;
3635 if (bfd_bread (&raw
, BFD_MACH_O_SECTION_SIZE
, abfd
)
3636 != BFD_MACH_O_SECTION_SIZE
)
3639 sec
= bfd_mach_o_make_bfd_section (abfd
, raw
.segname
, raw
.sectname
);
3643 section
= bfd_mach_o_get_mach_o_section (sec
);
3644 memcpy (section
->segname
, raw
.segname
, sizeof (raw
.segname
));
3645 section
->segname
[BFD_MACH_O_SEGNAME_SIZE
] = 0;
3646 memcpy (section
->sectname
, raw
.sectname
, sizeof (raw
.sectname
));
3647 section
->sectname
[BFD_MACH_O_SECTNAME_SIZE
] = 0;
3648 section
->addr
= bfd_h_get_32 (abfd
, raw
.addr
);
3649 section
->size
= bfd_h_get_32 (abfd
, raw
.size
);
3650 section
->offset
= bfd_h_get_32 (abfd
, raw
.offset
);
3651 section
->align
= bfd_h_get_32 (abfd
, raw
.align
);
3652 /* PR 17512: file: 0017eb76. */
3653 if (section
->align
>= 31)
3656 (_("bfd_mach_o_read_section_32: overlarge alignment value: %#lx"),
3658 section
->align
= 30;
3660 section
->reloff
= bfd_h_get_32 (abfd
, raw
.reloff
);
3661 section
->nreloc
= bfd_h_get_32 (abfd
, raw
.nreloc
);
3662 section
->flags
= bfd_h_get_32 (abfd
, raw
.flags
);
3663 section
->reserved1
= bfd_h_get_32 (abfd
, raw
.reserved1
);
3664 section
->reserved2
= bfd_h_get_32 (abfd
, raw
.reserved2
);
3665 section
->reserved3
= 0;
3667 bfd_mach_o_init_section_from_mach_o (sec
, prot
);
3673 bfd_mach_o_read_section_64 (bfd
*abfd
, unsigned long prot
)
3675 struct mach_o_section_64_external raw
;
3677 bfd_mach_o_section
*section
;
3679 if (bfd_bread (&raw
, BFD_MACH_O_SECTION_64_SIZE
, abfd
)
3680 != BFD_MACH_O_SECTION_64_SIZE
)
3683 sec
= bfd_mach_o_make_bfd_section (abfd
, raw
.segname
, raw
.sectname
);
3687 section
= bfd_mach_o_get_mach_o_section (sec
);
3688 memcpy (section
->segname
, raw
.segname
, sizeof (raw
.segname
));
3689 section
->segname
[BFD_MACH_O_SEGNAME_SIZE
] = 0;
3690 memcpy (section
->sectname
, raw
.sectname
, sizeof (raw
.sectname
));
3691 section
->sectname
[BFD_MACH_O_SECTNAME_SIZE
] = 0;
3692 section
->addr
= bfd_h_get_64 (abfd
, raw
.addr
);
3693 section
->size
= bfd_h_get_64 (abfd
, raw
.size
);
3694 section
->offset
= bfd_h_get_32 (abfd
, raw
.offset
);
3695 section
->align
= bfd_h_get_32 (abfd
, raw
.align
);
3696 if (section
->align
>= 63)
3699 (_("bfd_mach_o_read_section_64: overlarge alignment value: %#lx"),
3701 section
->align
= 62;
3703 section
->reloff
= bfd_h_get_32 (abfd
, raw
.reloff
);
3704 section
->nreloc
= bfd_h_get_32 (abfd
, raw
.nreloc
);
3705 section
->flags
= bfd_h_get_32 (abfd
, raw
.flags
);
3706 section
->reserved1
= bfd_h_get_32 (abfd
, raw
.reserved1
);
3707 section
->reserved2
= bfd_h_get_32 (abfd
, raw
.reserved2
);
3708 section
->reserved3
= bfd_h_get_32 (abfd
, raw
.reserved3
);
3710 bfd_mach_o_init_section_from_mach_o (sec
, prot
);
3716 bfd_mach_o_read_section (bfd
*abfd
, unsigned long prot
, unsigned int wide
)
3719 return bfd_mach_o_read_section_64 (abfd
, prot
);
3721 return bfd_mach_o_read_section_32 (abfd
, prot
);
3725 bfd_mach_o_read_symtab_symbol (bfd
*abfd
,
3726 bfd_mach_o_symtab_command
*sym
,
3727 bfd_mach_o_asymbol
*s
,
3730 bfd_mach_o_data_struct
*mdata
= bfd_mach_o_get_data (abfd
);
3731 unsigned int wide
= mach_o_wide_p (&mdata
->header
);
3732 unsigned int symwidth
=
3733 wide
? BFD_MACH_O_NLIST_64_SIZE
: BFD_MACH_O_NLIST_SIZE
;
3734 unsigned int symoff
= sym
->symoff
+ (i
* symwidth
);
3735 struct mach_o_nlist_64_external raw
;
3736 unsigned char type
= -1;
3737 unsigned char section
= -1;
3739 symvalue value
= -1;
3740 unsigned long stroff
= -1;
3741 unsigned int symtype
= -1;
3743 BFD_ASSERT (sym
->strtab
!= NULL
);
3745 if (bfd_seek (abfd
, symoff
, SEEK_SET
) != 0
3746 || bfd_bread (&raw
, symwidth
, abfd
) != symwidth
)
3749 /* xgettext:c-format */
3750 (_("bfd_mach_o_read_symtab_symbol: unable to read %d bytes at %u"),
3755 stroff
= bfd_h_get_32 (abfd
, raw
.n_strx
);
3756 type
= bfd_h_get_8 (abfd
, raw
.n_type
);
3757 symtype
= type
& BFD_MACH_O_N_TYPE
;
3758 section
= bfd_h_get_8 (abfd
, raw
.n_sect
);
3759 desc
= bfd_h_get_16 (abfd
, raw
.n_desc
);
3761 value
= bfd_h_get_64 (abfd
, raw
.n_value
);
3763 value
= bfd_h_get_32 (abfd
, raw
.n_value
);
3765 if (stroff
>= sym
->strsize
)
3768 /* xgettext:c-format */
3769 (_("bfd_mach_o_read_symtab_symbol: name out of range (%lu >= %u)"),
3775 s
->symbol
.the_bfd
= abfd
;
3776 s
->symbol
.name
= sym
->strtab
+ stroff
;
3777 s
->symbol
.value
= value
;
3778 s
->symbol
.flags
= 0x0;
3779 s
->symbol
.udata
.i
= i
;
3781 s
->n_sect
= section
;
3784 if (type
& BFD_MACH_O_N_STAB
)
3786 s
->symbol
.flags
|= BSF_DEBUGGING
;
3787 s
->symbol
.section
= bfd_und_section_ptr
;
3799 if ((section
> 0) && (section
<= mdata
->nsects
))
3801 s
->symbol
.section
= mdata
->sections
[section
- 1]->bfdsection
;
3803 s
->symbol
.value
- mdata
->sections
[section
- 1]->addr
;
3810 if (type
& (BFD_MACH_O_N_PEXT
| BFD_MACH_O_N_EXT
))
3811 s
->symbol
.flags
|= BSF_GLOBAL
;
3813 s
->symbol
.flags
|= BSF_LOCAL
;
3817 case BFD_MACH_O_N_UNDF
:
3818 if (type
== (BFD_MACH_O_N_UNDF
| BFD_MACH_O_N_EXT
)
3819 && s
->symbol
.value
!= 0)
3821 /* A common symbol. */
3822 s
->symbol
.section
= bfd_com_section_ptr
;
3823 s
->symbol
.flags
= BSF_NO_FLAGS
;
3827 s
->symbol
.section
= bfd_und_section_ptr
;
3828 if (s
->n_desc
& BFD_MACH_O_N_WEAK_REF
)
3829 s
->symbol
.flags
|= BSF_WEAK
;
3832 case BFD_MACH_O_N_PBUD
:
3833 s
->symbol
.section
= bfd_und_section_ptr
;
3835 case BFD_MACH_O_N_ABS
:
3836 s
->symbol
.section
= bfd_abs_section_ptr
;
3838 case BFD_MACH_O_N_SECT
:
3839 if ((section
> 0) && (section
<= mdata
->nsects
))
3841 s
->symbol
.section
= mdata
->sections
[section
- 1]->bfdsection
;
3843 s
->symbol
.value
- mdata
->sections
[section
- 1]->addr
;
3847 /* Mach-O uses 0 to mean "no section"; not an error. */
3851 /* xgettext:c-format */
3852 (_("bfd_mach_o_read_symtab_symbol: "
3853 "symbol \"%s\" specified invalid section %d (max %lu): "
3854 "setting to undefined"),
3855 s
->symbol
.name
, section
, mdata
->nsects
);
3857 s
->symbol
.section
= bfd_und_section_ptr
;
3860 case BFD_MACH_O_N_INDR
:
3861 /* FIXME: we don't follow the BFD convention as this indirect symbol
3862 won't be followed by the referenced one. This looks harmless
3863 unless we start using the linker. */
3864 s
->symbol
.flags
|= BSF_INDIRECT
;
3865 s
->symbol
.section
= bfd_ind_section_ptr
;
3866 s
->symbol
.value
= 0;
3870 /* xgettext:c-format */
3871 (_("bfd_mach_o_read_symtab_symbol: "
3872 "symbol \"%s\" specified invalid type field 0x%x: "
3873 "setting to undefined"), s
->symbol
.name
, symtype
);
3874 s
->symbol
.section
= bfd_und_section_ptr
;
3883 bfd_mach_o_read_symtab_strtab (bfd
*abfd
)
3885 bfd_mach_o_data_struct
*mdata
= bfd_mach_o_get_data (abfd
);
3886 bfd_mach_o_symtab_command
*sym
= mdata
->symtab
;
3888 /* Fail if there is no symtab. */
3892 /* Success if already loaded. */
3896 if (abfd
->flags
& BFD_IN_MEMORY
)
3898 struct bfd_in_memory
*b
;
3900 b
= (struct bfd_in_memory
*) abfd
->iostream
;
3902 if ((sym
->stroff
+ sym
->strsize
) > b
->size
)
3904 bfd_set_error (bfd_error_file_truncated
);
3907 sym
->strtab
= (char *) b
->buffer
+ sym
->stroff
;
3911 /* See PR 21840 for a reproducer. */
3912 if ((sym
->strsize
+ 1) == 0)
3914 if (bfd_seek (abfd
, sym
->stroff
, SEEK_SET
) != 0)
3916 sym
->strtab
= (char *) _bfd_alloc_and_read (abfd
, sym
->strsize
+ 1,
3918 if (sym
->strtab
== NULL
)
3921 /* Zero terminate the string table. */
3922 sym
->strtab
[sym
->strsize
] = 0;
3929 bfd_mach_o_read_symtab_symbols (bfd
*abfd
)
3931 bfd_mach_o_data_struct
*mdata
= bfd_mach_o_get_data (abfd
);
3932 bfd_mach_o_symtab_command
*sym
= mdata
->symtab
;
3937 if (sym
== NULL
|| sym
->nsyms
== 0 || sym
->symbols
)
3938 /* Return now if there are no symbols or if already loaded. */
3941 filesize
= bfd_get_file_size (abfd
);
3944 unsigned int wide
= mach_o_wide_p (&mdata
->header
);
3945 unsigned int symwidth
3946 = wide
? BFD_MACH_O_NLIST_64_SIZE
: BFD_MACH_O_NLIST_SIZE
;
3948 if (sym
->symoff
> filesize
3949 || sym
->nsyms
> (filesize
- sym
->symoff
) / symwidth
)
3951 bfd_set_error (bfd_error_file_truncated
);
3956 if (_bfd_mul_overflow (sym
->nsyms
, sizeof (bfd_mach_o_asymbol
), &amt
)
3957 || (sym
->symbols
= bfd_alloc (abfd
, amt
)) == NULL
)
3959 bfd_set_error (bfd_error_no_memory
);
3964 if (!bfd_mach_o_read_symtab_strtab (abfd
))
3967 for (i
= 0; i
< sym
->nsyms
; i
++)
3968 if (!bfd_mach_o_read_symtab_symbol (abfd
, sym
, &sym
->symbols
[i
], i
))
3974 bfd_release (abfd
, sym
->symbols
);
3975 sym
->symbols
= NULL
;
3981 bfd_mach_o_i386_flavour_string (unsigned int flavour
)
3983 switch ((int) flavour
)
3985 case BFD_MACH_O_x86_THREAD_STATE32
: return "x86_THREAD_STATE32";
3986 case BFD_MACH_O_x86_FLOAT_STATE32
: return "x86_FLOAT_STATE32";
3987 case BFD_MACH_O_x86_EXCEPTION_STATE32
: return "x86_EXCEPTION_STATE32";
3988 case BFD_MACH_O_x86_THREAD_STATE64
: return "x86_THREAD_STATE64";
3989 case BFD_MACH_O_x86_FLOAT_STATE64
: return "x86_FLOAT_STATE64";
3990 case BFD_MACH_O_x86_EXCEPTION_STATE64
: return "x86_EXCEPTION_STATE64";
3991 case BFD_MACH_O_x86_THREAD_STATE
: return "x86_THREAD_STATE";
3992 case BFD_MACH_O_x86_FLOAT_STATE
: return "x86_FLOAT_STATE";
3993 case BFD_MACH_O_x86_EXCEPTION_STATE
: return "x86_EXCEPTION_STATE";
3994 case BFD_MACH_O_x86_DEBUG_STATE32
: return "x86_DEBUG_STATE32";
3995 case BFD_MACH_O_x86_DEBUG_STATE64
: return "x86_DEBUG_STATE64";
3996 case BFD_MACH_O_x86_DEBUG_STATE
: return "x86_DEBUG_STATE";
3997 case BFD_MACH_O_x86_THREAD_STATE_NONE
: return "x86_THREAD_STATE_NONE";
3998 default: return "UNKNOWN";
4003 bfd_mach_o_ppc_flavour_string (unsigned int flavour
)
4005 switch ((int) flavour
)
4007 case BFD_MACH_O_PPC_THREAD_STATE
: return "PPC_THREAD_STATE";
4008 case BFD_MACH_O_PPC_FLOAT_STATE
: return "PPC_FLOAT_STATE";
4009 case BFD_MACH_O_PPC_EXCEPTION_STATE
: return "PPC_EXCEPTION_STATE";
4010 case BFD_MACH_O_PPC_VECTOR_STATE
: return "PPC_VECTOR_STATE";
4011 case BFD_MACH_O_PPC_THREAD_STATE64
: return "PPC_THREAD_STATE64";
4012 case BFD_MACH_O_PPC_EXCEPTION_STATE64
: return "PPC_EXCEPTION_STATE64";
4013 default: return "UNKNOWN";
4017 static unsigned char *
4018 bfd_mach_o_alloc_and_read (bfd
*abfd
, file_ptr filepos
,
4019 size_t size
, size_t extra
)
4021 if (bfd_seek (abfd
, filepos
, SEEK_SET
) != 0)
4023 unsigned char *ret
= _bfd_alloc_and_read (abfd
, size
+ extra
, size
);
4024 if (ret
&& extra
!= 0)
4025 memset (ret
+ size
, 0, extra
);
4030 bfd_mach_o_read_dylinker (bfd
*abfd
, bfd_mach_o_load_command
*command
)
4032 bfd_mach_o_dylinker_command
*cmd
= &command
->command
.dylinker
;
4033 struct mach_o_str_command_external raw
;
4034 unsigned int nameoff
;
4037 if (command
->len
< sizeof (raw
) + 8)
4039 if (bfd_bread (&raw
, sizeof (raw
), abfd
) != sizeof (raw
))
4042 nameoff
= bfd_h_get_32 (abfd
, raw
.str
);
4043 if (nameoff
> command
->len
)
4046 cmd
->name_offset
= nameoff
;
4047 namelen
= command
->len
- nameoff
;
4048 nameoff
+= command
->offset
;
4049 cmd
->name_str
= (char *) bfd_mach_o_alloc_and_read (abfd
, nameoff
,
4051 return cmd
->name_str
!= NULL
;
4055 bfd_mach_o_read_dylib (bfd
*abfd
, bfd_mach_o_load_command
*command
)
4057 bfd_mach_o_data_struct
*mdata
= bfd_mach_o_get_data (abfd
);
4058 bfd_mach_o_dylib_command
*cmd
= &command
->command
.dylib
;
4059 struct mach_o_dylib_command_external raw
;
4060 unsigned int nameoff
;
4064 if (command
->len
< sizeof (raw
) + 8)
4066 switch (command
->type
)
4068 case BFD_MACH_O_LC_LOAD_DYLIB
:
4069 case BFD_MACH_O_LC_LAZY_LOAD_DYLIB
:
4070 case BFD_MACH_O_LC_LOAD_WEAK_DYLIB
:
4071 case BFD_MACH_O_LC_ID_DYLIB
:
4072 case BFD_MACH_O_LC_REEXPORT_DYLIB
:
4073 case BFD_MACH_O_LC_LOAD_UPWARD_DYLIB
:
4080 if (bfd_bread (&raw
, sizeof (raw
), abfd
) != sizeof (raw
))
4083 nameoff
= bfd_h_get_32 (abfd
, raw
.name
);
4084 if (nameoff
> command
->len
)
4086 cmd
->timestamp
= bfd_h_get_32 (abfd
, raw
.timestamp
);
4087 cmd
->current_version
= bfd_h_get_32 (abfd
, raw
.current_version
);
4088 cmd
->compatibility_version
= bfd_h_get_32 (abfd
, raw
.compatibility_version
);
4090 cmd
->name_offset
= command
->offset
+ nameoff
;
4091 namelen
= command
->len
- nameoff
;
4092 pos
= mdata
->hdr_offset
+ cmd
->name_offset
;
4093 cmd
->name_str
= (char *) bfd_mach_o_alloc_and_read (abfd
, pos
, namelen
, 1);
4094 return cmd
->name_str
!= NULL
;
4098 bfd_mach_o_read_prebound_dylib (bfd
*abfd
,
4099 bfd_mach_o_load_command
*command
)
4101 bfd_mach_o_prebound_dylib_command
*cmd
= &command
->command
.prebound_dylib
;
4102 struct mach_o_prebound_dylib_command_external raw
;
4103 unsigned int nameoff
;
4104 unsigned int modoff
;
4105 unsigned int str_len
;
4108 if (command
->len
< sizeof (raw
) + 8)
4110 if (bfd_bread (&raw
, sizeof (raw
), abfd
) != sizeof (raw
))
4113 nameoff
= bfd_h_get_32 (abfd
, raw
.name
);
4114 modoff
= bfd_h_get_32 (abfd
, raw
.linked_modules
);
4115 if (nameoff
> command
->len
|| modoff
> command
->len
)
4118 str_len
= command
->len
- sizeof (raw
);
4119 str
= _bfd_alloc_and_read (abfd
, str_len
, str_len
);
4123 cmd
->name_offset
= command
->offset
+ nameoff
;
4124 cmd
->nmodules
= bfd_h_get_32 (abfd
, raw
.nmodules
);
4125 cmd
->linked_modules_offset
= command
->offset
+ modoff
;
4127 cmd
->name_str
= (char *)str
+ nameoff
- (sizeof (raw
) + BFD_MACH_O_LC_SIZE
);
4128 cmd
->linked_modules
= str
+ modoff
- (sizeof (raw
) + BFD_MACH_O_LC_SIZE
);
4133 bfd_mach_o_read_prebind_cksum (bfd
*abfd
,
4134 bfd_mach_o_load_command
*command
)
4136 bfd_mach_o_prebind_cksum_command
*cmd
= &command
->command
.prebind_cksum
;
4137 struct mach_o_prebind_cksum_command_external raw
;
4139 if (command
->len
< sizeof (raw
) + 8)
4141 if (bfd_bread (&raw
, sizeof (raw
), abfd
) != sizeof (raw
))
4144 cmd
->cksum
= bfd_get_32 (abfd
, raw
.cksum
);
4149 bfd_mach_o_read_twolevel_hints (bfd
*abfd
,
4150 bfd_mach_o_load_command
*command
)
4152 bfd_mach_o_twolevel_hints_command
*cmd
= &command
->command
.twolevel_hints
;
4153 struct mach_o_twolevel_hints_command_external raw
;
4155 if (command
->len
< sizeof (raw
) + 8)
4157 if (bfd_bread (&raw
, sizeof (raw
), abfd
) != sizeof (raw
))
4160 cmd
->offset
= bfd_get_32 (abfd
, raw
.offset
);
4161 cmd
->nhints
= bfd_get_32 (abfd
, raw
.nhints
);
4166 bfd_mach_o_read_fvmlib (bfd
*abfd
, bfd_mach_o_load_command
*command
)
4168 bfd_mach_o_fvmlib_command
*fvm
= &command
->command
.fvmlib
;
4169 struct mach_o_fvmlib_command_external raw
;
4170 unsigned int nameoff
;
4173 if (command
->len
< sizeof (raw
) + 8)
4175 if (bfd_bread (&raw
, sizeof (raw
), abfd
) != sizeof (raw
))
4178 nameoff
= bfd_h_get_32 (abfd
, raw
.name
);
4179 if (nameoff
> command
->len
)
4181 fvm
->minor_version
= bfd_h_get_32 (abfd
, raw
.minor_version
);
4182 fvm
->header_addr
= bfd_h_get_32 (abfd
, raw
.header_addr
);
4184 fvm
->name_offset
= command
->offset
+ nameoff
;
4185 namelen
= command
->len
- nameoff
;
4186 fvm
->name_str
= (char *) bfd_mach_o_alloc_and_read (abfd
, fvm
->name_offset
,
4188 return fvm
->name_str
!= NULL
;
4192 bfd_mach_o_read_thread (bfd
*abfd
, bfd_mach_o_load_command
*command
)
4194 bfd_mach_o_data_struct
*mdata
= bfd_mach_o_get_data (abfd
);
4195 bfd_mach_o_thread_command
*cmd
= &command
->command
.thread
;
4196 unsigned int offset
;
4197 unsigned int nflavours
;
4199 struct mach_o_thread_command_external raw
;
4202 BFD_ASSERT ((command
->type
== BFD_MACH_O_LC_THREAD
)
4203 || (command
->type
== BFD_MACH_O_LC_UNIXTHREAD
));
4205 /* Count the number of threads. */
4208 while (offset
+ sizeof (raw
) <= command
->len
)
4212 if (bfd_seek (abfd
, command
->offset
+ offset
, SEEK_SET
) != 0
4213 || bfd_bread (&raw
, sizeof (raw
), abfd
) != sizeof (raw
))
4216 count
= bfd_h_get_32 (abfd
, raw
.count
);
4217 if (count
> (unsigned) -1 / 4
4218 || command
->len
- (offset
+ sizeof (raw
)) < count
* 4)
4220 offset
+= sizeof (raw
) + count
* 4;
4223 if (nflavours
== 0 || offset
!= command
->len
)
4226 /* Allocate threads. */
4227 if (_bfd_mul_overflow (nflavours
, sizeof (bfd_mach_o_thread_flavour
), &amt
))
4229 bfd_set_error (bfd_error_file_too_big
);
4232 cmd
->flavours
= bfd_alloc (abfd
, amt
);
4233 if (cmd
->flavours
== NULL
)
4235 cmd
->nflavours
= nflavours
;
4239 while (offset
!= command
->len
)
4241 if (bfd_seek (abfd
, command
->offset
+ offset
, SEEK_SET
) != 0
4242 || bfd_bread (&raw
, sizeof (raw
), abfd
) != sizeof (raw
))
4245 cmd
->flavours
[nflavours
].flavour
= bfd_h_get_32 (abfd
, raw
.flavour
);
4246 cmd
->flavours
[nflavours
].offset
= command
->offset
+ offset
+ sizeof (raw
);
4247 cmd
->flavours
[nflavours
].size
= bfd_h_get_32 (abfd
, raw
.count
) * 4;
4248 offset
+= cmd
->flavours
[nflavours
].size
+ sizeof (raw
);
4252 for (i
= 0; i
< nflavours
; i
++)
4257 const char *flavourstr
;
4258 const char *prefix
= "LC_THREAD";
4261 switch (mdata
->header
.cputype
)
4263 case BFD_MACH_O_CPU_TYPE_POWERPC
:
4264 case BFD_MACH_O_CPU_TYPE_POWERPC_64
:
4266 bfd_mach_o_ppc_flavour_string (cmd
->flavours
[i
].flavour
);
4268 case BFD_MACH_O_CPU_TYPE_I386
:
4269 case BFD_MACH_O_CPU_TYPE_X86_64
:
4271 bfd_mach_o_i386_flavour_string (cmd
->flavours
[i
].flavour
);
4274 flavourstr
= "UNKNOWN_ARCHITECTURE";
4278 snamelen
= strlen (prefix
) + 1 + 20 + 1 + strlen (flavourstr
) + 1;
4279 sname
= bfd_alloc (abfd
, snamelen
);
4285 sprintf (sname
, "%s.%s.%u", prefix
, flavourstr
, j
);
4286 if (bfd_get_section_by_name (abfd
, sname
) == NULL
)
4291 bfdsec
= bfd_make_section_with_flags (abfd
, sname
, SEC_HAS_CONTENTS
);
4295 bfdsec
->size
= cmd
->flavours
[i
].size
;
4296 bfdsec
->filepos
= cmd
->flavours
[i
].offset
;
4297 bfdsec
->alignment_power
= 0x0;
4299 cmd
->section
= bfdsec
;
4306 bfd_mach_o_read_dysymtab (bfd
*abfd
, bfd_mach_o_load_command
*command
,
4309 bfd_mach_o_dysymtab_command
*cmd
= &command
->command
.dysymtab
;
4310 bfd_mach_o_data_struct
*mdata
= bfd_mach_o_get_data (abfd
);
4312 BFD_ASSERT (command
->type
== BFD_MACH_O_LC_DYSYMTAB
);
4315 struct mach_o_dysymtab_command_external raw
;
4317 if (command
->len
< sizeof (raw
) + 8)
4319 if (bfd_bread (&raw
, sizeof (raw
), abfd
) != sizeof (raw
))
4322 cmd
->ilocalsym
= bfd_h_get_32 (abfd
, raw
.ilocalsym
);
4323 cmd
->nlocalsym
= bfd_h_get_32 (abfd
, raw
.nlocalsym
);
4324 cmd
->iextdefsym
= bfd_h_get_32 (abfd
, raw
.iextdefsym
);
4325 cmd
->nextdefsym
= bfd_h_get_32 (abfd
, raw
.nextdefsym
);
4326 cmd
->iundefsym
= bfd_h_get_32 (abfd
, raw
.iundefsym
);
4327 cmd
->nundefsym
= bfd_h_get_32 (abfd
, raw
.nundefsym
);
4328 cmd
->tocoff
= bfd_h_get_32 (abfd
, raw
.tocoff
);
4329 cmd
->ntoc
= bfd_h_get_32 (abfd
, raw
.ntoc
);
4330 cmd
->modtaboff
= bfd_h_get_32 (abfd
, raw
.modtaboff
);
4331 cmd
->nmodtab
= bfd_h_get_32 (abfd
, raw
.nmodtab
);
4332 cmd
->extrefsymoff
= bfd_h_get_32 (abfd
, raw
.extrefsymoff
);
4333 cmd
->nextrefsyms
= bfd_h_get_32 (abfd
, raw
.nextrefsyms
);
4334 cmd
->indirectsymoff
= bfd_h_get_32 (abfd
, raw
.indirectsymoff
);
4335 cmd
->nindirectsyms
= bfd_h_get_32 (abfd
, raw
.nindirectsyms
);
4336 cmd
->extreloff
= bfd_h_get_32 (abfd
, raw
.extreloff
);
4337 cmd
->nextrel
= bfd_h_get_32 (abfd
, raw
.nextrel
);
4338 cmd
->locreloff
= bfd_h_get_32 (abfd
, raw
.locreloff
);
4339 cmd
->nlocrel
= bfd_h_get_32 (abfd
, raw
.nlocrel
);
4342 if (cmd
->nmodtab
!= 0)
4345 int wide
= bfd_mach_o_wide_p (abfd
);
4346 unsigned int module_len
= wide
? 56 : 52;
4349 if (cmd
->modtaboff
> filesize
4350 || cmd
->nmodtab
> (filesize
- cmd
->modtaboff
) / module_len
)
4352 bfd_set_error (bfd_error_file_truncated
);
4355 if (_bfd_mul_overflow (cmd
->nmodtab
,
4356 sizeof (bfd_mach_o_dylib_module
), &amt
))
4358 bfd_set_error (bfd_error_file_too_big
);
4361 cmd
->dylib_module
= bfd_alloc (abfd
, amt
);
4362 if (cmd
->dylib_module
== NULL
)
4365 if (bfd_seek (abfd
, cmd
->modtaboff
, SEEK_SET
) != 0)
4368 for (i
= 0; i
< cmd
->nmodtab
; i
++)
4370 bfd_mach_o_dylib_module
*module
= &cmd
->dylib_module
[i
];
4372 unsigned char buf
[56];
4374 if (bfd_bread ((void *) buf
, module_len
, abfd
) != module_len
)
4377 module
->module_name_idx
= bfd_h_get_32 (abfd
, buf
+ 0);
4378 module
->iextdefsym
= bfd_h_get_32 (abfd
, buf
+ 4);
4379 module
->nextdefsym
= bfd_h_get_32 (abfd
, buf
+ 8);
4380 module
->irefsym
= bfd_h_get_32 (abfd
, buf
+ 12);
4381 module
->nrefsym
= bfd_h_get_32 (abfd
, buf
+ 16);
4382 module
->ilocalsym
= bfd_h_get_32 (abfd
, buf
+ 20);
4383 module
->nlocalsym
= bfd_h_get_32 (abfd
, buf
+ 24);
4384 module
->iextrel
= bfd_h_get_32 (abfd
, buf
+ 28);
4385 module
->nextrel
= bfd_h_get_32 (abfd
, buf
+ 32);
4386 v
= bfd_h_get_32 (abfd
, buf
+36);
4387 module
->iinit
= v
& 0xffff;
4388 module
->iterm
= (v
>> 16) & 0xffff;
4389 v
= bfd_h_get_32 (abfd
, buf
+ 40);
4390 module
->ninit
= v
& 0xffff;
4391 module
->nterm
= (v
>> 16) & 0xffff;
4394 module
->objc_module_info_size
= bfd_h_get_32 (abfd
, buf
+ 44);
4395 module
->objc_module_info_addr
= bfd_h_get_64 (abfd
, buf
+ 48);
4399 module
->objc_module_info_addr
= bfd_h_get_32 (abfd
, buf
+ 44);
4400 module
->objc_module_info_size
= bfd_h_get_32 (abfd
, buf
+ 48);
4409 struct mach_o_dylib_table_of_contents_external raw
;
4411 if (cmd
->tocoff
> filesize
4412 || cmd
->ntoc
> (filesize
- cmd
->tocoff
) / sizeof (raw
))
4414 bfd_set_error (bfd_error_file_truncated
);
4417 if (_bfd_mul_overflow (cmd
->ntoc
,
4418 sizeof (bfd_mach_o_dylib_table_of_content
), &amt
))
4420 bfd_set_error (bfd_error_file_too_big
);
4423 cmd
->dylib_toc
= bfd_alloc (abfd
, amt
);
4424 if (cmd
->dylib_toc
== NULL
)
4427 if (bfd_seek (abfd
, cmd
->tocoff
, SEEK_SET
) != 0)
4430 for (i
= 0; i
< cmd
->ntoc
; i
++)
4432 bfd_mach_o_dylib_table_of_content
*toc
= &cmd
->dylib_toc
[i
];
4434 if (bfd_bread (&raw
, sizeof (raw
), abfd
) != sizeof (raw
))
4437 toc
->symbol_index
= bfd_h_get_32 (abfd
, raw
.symbol_index
);
4438 toc
->module_index
= bfd_h_get_32 (abfd
, raw
.module_index
);
4442 if (cmd
->nindirectsyms
!= 0)
4447 if (cmd
->indirectsymoff
> filesize
4448 || cmd
->nindirectsyms
> (filesize
- cmd
->indirectsymoff
) / 4)
4450 bfd_set_error (bfd_error_file_truncated
);
4453 if (_bfd_mul_overflow (cmd
->nindirectsyms
, sizeof (unsigned int), &amt
))
4455 bfd_set_error (bfd_error_file_too_big
);
4458 cmd
->indirect_syms
= bfd_alloc (abfd
, amt
);
4459 if (cmd
->indirect_syms
== NULL
)
4462 if (bfd_seek (abfd
, cmd
->indirectsymoff
, SEEK_SET
) != 0)
4465 for (i
= 0; i
< cmd
->nindirectsyms
; i
++)
4467 unsigned char raw
[4];
4468 unsigned int *is
= &cmd
->indirect_syms
[i
];
4470 if (bfd_bread (raw
, sizeof (raw
), abfd
) != sizeof (raw
))
4473 *is
= bfd_h_get_32 (abfd
, raw
);
4477 if (cmd
->nextrefsyms
!= 0)
4483 if (cmd
->extrefsymoff
> filesize
4484 || cmd
->nextrefsyms
> (filesize
- cmd
->extrefsymoff
) / 4)
4486 bfd_set_error (bfd_error_file_truncated
);
4489 if (_bfd_mul_overflow (cmd
->nextrefsyms
,
4490 sizeof (bfd_mach_o_dylib_reference
), &amt
))
4492 bfd_set_error (bfd_error_file_too_big
);
4495 cmd
->ext_refs
= bfd_alloc (abfd
, amt
);
4496 if (cmd
->ext_refs
== NULL
)
4499 if (bfd_seek (abfd
, cmd
->extrefsymoff
, SEEK_SET
) != 0)
4502 for (i
= 0; i
< cmd
->nextrefsyms
; i
++)
4504 unsigned char raw
[4];
4505 bfd_mach_o_dylib_reference
*ref
= &cmd
->ext_refs
[i
];
4507 if (bfd_bread (raw
, sizeof (raw
), abfd
) != sizeof (raw
))
4510 /* Fields isym and flags are written as bit-fields, thus we need
4511 a specific processing for endianness. */
4512 v
= bfd_h_get_32 (abfd
, raw
);
4513 if (bfd_big_endian (abfd
))
4515 ref
->isym
= (v
>> 8) & 0xffffff;
4516 ref
->flags
= v
& 0xff;
4520 ref
->isym
= v
& 0xffffff;
4521 ref
->flags
= (v
>> 24) & 0xff;
4526 if (mdata
->dysymtab
)
4528 mdata
->dysymtab
= cmd
;
4534 bfd_mach_o_read_symtab (bfd
*abfd
, bfd_mach_o_load_command
*command
,
4537 bfd_mach_o_symtab_command
*symtab
= &command
->command
.symtab
;
4538 bfd_mach_o_data_struct
*mdata
= bfd_mach_o_get_data (abfd
);
4539 struct mach_o_symtab_command_external raw
;
4541 BFD_ASSERT (command
->type
== BFD_MACH_O_LC_SYMTAB
);
4543 if (command
->len
< sizeof (raw
) + 8)
4545 if (bfd_bread (&raw
, sizeof (raw
), abfd
) != sizeof (raw
))
4548 symtab
->symoff
= bfd_h_get_32 (abfd
, raw
.symoff
);
4549 symtab
->nsyms
= bfd_h_get_32 (abfd
, raw
.nsyms
);
4550 symtab
->stroff
= bfd_h_get_32 (abfd
, raw
.stroff
);
4551 symtab
->strsize
= bfd_h_get_32 (abfd
, raw
.strsize
);
4552 symtab
->symbols
= NULL
;
4553 symtab
->strtab
= NULL
;
4555 if (symtab
->symoff
> filesize
4556 || symtab
->nsyms
> (filesize
- symtab
->symoff
) / BFD_MACH_O_NLIST_SIZE
4557 || symtab
->stroff
> filesize
4558 || symtab
->strsize
> filesize
- symtab
->stroff
)
4560 bfd_set_error (bfd_error_file_truncated
);
4564 if (symtab
->nsyms
!= 0)
4565 abfd
->flags
|= HAS_SYMS
;
4569 mdata
->symtab
= symtab
;
4574 bfd_mach_o_read_uuid (bfd
*abfd
, bfd_mach_o_load_command
*command
)
4576 bfd_mach_o_uuid_command
*cmd
= &command
->command
.uuid
;
4578 BFD_ASSERT (command
->type
== BFD_MACH_O_LC_UUID
);
4580 if (command
->len
< 16 + 8)
4582 if (bfd_bread (cmd
->uuid
, 16, abfd
) != 16)
4589 bfd_mach_o_read_linkedit (bfd
*abfd
, bfd_mach_o_load_command
*command
)
4591 bfd_mach_o_linkedit_command
*cmd
= &command
->command
.linkedit
;
4592 struct mach_o_linkedit_data_command_external raw
;
4594 if (command
->len
< sizeof (raw
) + 8)
4596 if (bfd_bread (&raw
, sizeof (raw
), abfd
) != sizeof (raw
))
4599 cmd
->dataoff
= bfd_get_32 (abfd
, raw
.dataoff
);
4600 cmd
->datasize
= bfd_get_32 (abfd
, raw
.datasize
);
4605 bfd_mach_o_read_str (bfd
*abfd
, bfd_mach_o_load_command
*command
)
4607 bfd_mach_o_str_command
*cmd
= &command
->command
.str
;
4608 struct mach_o_str_command_external raw
;
4611 if (command
->len
< sizeof (raw
) + 8)
4613 if (bfd_bread (&raw
, sizeof (raw
), abfd
) != sizeof (raw
))
4616 off
= bfd_get_32 (abfd
, raw
.str
);
4617 if (off
> command
->len
)
4620 cmd
->stroff
= command
->offset
+ off
;
4621 cmd
->str_len
= command
->len
- off
;
4622 cmd
->str
= (char *) bfd_mach_o_alloc_and_read (abfd
, cmd
->stroff
,
4624 return cmd
->str
!= NULL
;
4628 bfd_mach_o_read_dyld_content (bfd
*abfd
, bfd_mach_o_dyld_info_command
*cmd
)
4630 /* Read rebase content. */
4631 if (cmd
->rebase_content
== NULL
&& cmd
->rebase_size
!= 0)
4634 = bfd_mach_o_alloc_and_read (abfd
, cmd
->rebase_off
,
4635 cmd
->rebase_size
, 0);
4636 if (cmd
->rebase_content
== NULL
)
4640 /* Read bind content. */
4641 if (cmd
->bind_content
== NULL
&& cmd
->bind_size
!= 0)
4644 = bfd_mach_o_alloc_and_read (abfd
, cmd
->bind_off
,
4646 if (cmd
->bind_content
== NULL
)
4650 /* Read weak bind content. */
4651 if (cmd
->weak_bind_content
== NULL
&& cmd
->weak_bind_size
!= 0)
4653 cmd
->weak_bind_content
4654 = bfd_mach_o_alloc_and_read (abfd
, cmd
->weak_bind_off
,
4655 cmd
->weak_bind_size
, 0);
4656 if (cmd
->weak_bind_content
== NULL
)
4660 /* Read lazy bind content. */
4661 if (cmd
->lazy_bind_content
== NULL
&& cmd
->lazy_bind_size
!= 0)
4663 cmd
->lazy_bind_content
4664 = bfd_mach_o_alloc_and_read (abfd
, cmd
->lazy_bind_off
,
4665 cmd
->lazy_bind_size
, 0);
4666 if (cmd
->lazy_bind_content
== NULL
)
4670 /* Read export content. */
4671 if (cmd
->export_content
== NULL
&& cmd
->export_size
!= 0)
4674 = bfd_mach_o_alloc_and_read (abfd
, cmd
->export_off
,
4675 cmd
->export_size
, 0);
4676 if (cmd
->export_content
== NULL
)
4684 bfd_mach_o_read_dyld_info (bfd
*abfd
, bfd_mach_o_load_command
*command
)
4686 bfd_mach_o_dyld_info_command
*cmd
= &command
->command
.dyld_info
;
4687 struct mach_o_dyld_info_command_external raw
;
4689 if (command
->len
< sizeof (raw
) + 8)
4691 if (bfd_bread (&raw
, sizeof (raw
), abfd
) != sizeof (raw
))
4694 cmd
->rebase_off
= bfd_get_32 (abfd
, raw
.rebase_off
);
4695 cmd
->rebase_size
= bfd_get_32 (abfd
, raw
.rebase_size
);
4696 cmd
->rebase_content
= NULL
;
4697 cmd
->bind_off
= bfd_get_32 (abfd
, raw
.bind_off
);
4698 cmd
->bind_size
= bfd_get_32 (abfd
, raw
.bind_size
);
4699 cmd
->bind_content
= NULL
;
4700 cmd
->weak_bind_off
= bfd_get_32 (abfd
, raw
.weak_bind_off
);
4701 cmd
->weak_bind_size
= bfd_get_32 (abfd
, raw
.weak_bind_size
);
4702 cmd
->weak_bind_content
= NULL
;
4703 cmd
->lazy_bind_off
= bfd_get_32 (abfd
, raw
.lazy_bind_off
);
4704 cmd
->lazy_bind_size
= bfd_get_32 (abfd
, raw
.lazy_bind_size
);
4705 cmd
->lazy_bind_content
= NULL
;
4706 cmd
->export_off
= bfd_get_32 (abfd
, raw
.export_off
);
4707 cmd
->export_size
= bfd_get_32 (abfd
, raw
.export_size
);
4708 cmd
->export_content
= NULL
;
4713 bfd_mach_o_read_version_min (bfd
*abfd
, bfd_mach_o_load_command
*command
)
4715 bfd_mach_o_version_min_command
*cmd
= &command
->command
.version_min
;
4716 struct mach_o_version_min_command_external raw
;
4718 if (command
->len
< sizeof (raw
) + 8)
4720 if (bfd_bread (&raw
, sizeof (raw
), abfd
) != sizeof (raw
))
4723 cmd
->version
= bfd_get_32 (abfd
, raw
.version
);
4724 cmd
->sdk
= bfd_get_32 (abfd
, raw
.sdk
);
4729 bfd_mach_o_read_encryption_info (bfd
*abfd
, bfd_mach_o_load_command
*command
)
4731 bfd_mach_o_encryption_info_command
*cmd
= &command
->command
.encryption_info
;
4732 struct mach_o_encryption_info_command_external raw
;
4734 if (command
->len
< sizeof (raw
) + 8)
4736 if (bfd_bread (&raw
, sizeof (raw
), abfd
) != sizeof (raw
))
4739 cmd
->cryptoff
= bfd_get_32 (abfd
, raw
.cryptoff
);
4740 cmd
->cryptsize
= bfd_get_32 (abfd
, raw
.cryptsize
);
4741 cmd
->cryptid
= bfd_get_32 (abfd
, raw
.cryptid
);
4746 bfd_mach_o_read_encryption_info_64 (bfd
*abfd
, bfd_mach_o_load_command
*command
)
4748 bfd_mach_o_encryption_info_command
*cmd
= &command
->command
.encryption_info
;
4749 struct mach_o_encryption_info_64_command_external raw
;
4751 if (command
->len
< sizeof (raw
) + 8)
4753 if (bfd_bread (&raw
, sizeof (raw
), abfd
) != sizeof (raw
))
4756 cmd
->cryptoff
= bfd_get_32 (abfd
, raw
.cryptoff
);
4757 cmd
->cryptsize
= bfd_get_32 (abfd
, raw
.cryptsize
);
4758 cmd
->cryptid
= bfd_get_32 (abfd
, raw
.cryptid
);
4763 bfd_mach_o_read_main (bfd
*abfd
, bfd_mach_o_load_command
*command
)
4765 bfd_mach_o_main_command
*cmd
= &command
->command
.main
;
4766 struct mach_o_entry_point_command_external raw
;
4768 if (command
->len
< sizeof (raw
) + 8)
4770 if (bfd_bread (&raw
, sizeof (raw
), abfd
) != sizeof (raw
))
4773 cmd
->entryoff
= bfd_get_64 (abfd
, raw
.entryoff
);
4774 cmd
->stacksize
= bfd_get_64 (abfd
, raw
.stacksize
);
4779 bfd_mach_o_read_source_version (bfd
*abfd
, bfd_mach_o_load_command
*command
)
4781 bfd_mach_o_source_version_command
*cmd
= &command
->command
.source_version
;
4782 struct mach_o_source_version_command_external raw
;
4785 if (command
->len
< sizeof (raw
) + 8)
4787 if (bfd_bread (&raw
, sizeof (raw
), abfd
) != sizeof (raw
))
4790 ver
= bfd_get_64 (abfd
, raw
.version
);
4791 /* Note: we use a serie of shift to avoid shift > 32 (for which gcc
4792 generates warnings) in case of the host doesn't support 64 bit
4794 cmd
->e
= ver
& 0x3ff;
4796 cmd
->d
= ver
& 0x3ff;
4798 cmd
->c
= ver
& 0x3ff;
4800 cmd
->b
= ver
& 0x3ff;
4802 cmd
->a
= ver
& 0xffffff;
4807 bfd_mach_o_read_note (bfd
*abfd
, bfd_mach_o_load_command
*command
)
4809 bfd_mach_o_note_command
*cmd
= &command
->command
.note
;
4810 struct mach_o_note_command_external raw
;
4812 if (command
->len
< sizeof (raw
) + 8)
4814 if (bfd_bread (&raw
, sizeof (raw
), abfd
) != sizeof (raw
))
4817 memcpy (cmd
->data_owner
, raw
.data_owner
, 16);
4818 cmd
->offset
= bfd_get_64 (abfd
, raw
.offset
);
4819 cmd
->size
= bfd_get_64 (abfd
, raw
.size
);
4824 bfd_mach_o_read_build_version (bfd
*abfd
, bfd_mach_o_load_command
*command
)
4826 bfd_mach_o_build_version_command
*cmd
= &command
->command
.build_version
;
4827 struct mach_o_build_version_command_external raw
;
4829 if (command
->len
< sizeof (raw
) + 8)
4831 if (bfd_bread (&raw
, sizeof (raw
), abfd
) != sizeof (raw
))
4834 cmd
->platform
= bfd_get_32 (abfd
, raw
.platform
);
4835 cmd
->minos
= bfd_get_32 (abfd
, raw
.minos
);
4836 cmd
->sdk
= bfd_get_32 (abfd
, raw
.sdk
);
4837 cmd
->ntools
= bfd_get_32 (abfd
, raw
.ntools
);
4842 bfd_mach_o_read_segment (bfd
*abfd
,
4843 bfd_mach_o_load_command
*command
,
4846 bfd_mach_o_segment_command
*seg
= &command
->command
.segment
;
4851 struct mach_o_segment_command_64_external raw
;
4853 BFD_ASSERT (command
->type
== BFD_MACH_O_LC_SEGMENT_64
);
4855 if (command
->len
< sizeof (raw
) + 8)
4857 if (bfd_bread (&raw
, sizeof (raw
), abfd
) != sizeof (raw
))
4860 memcpy (seg
->segname
, raw
.segname
, 16);
4861 seg
->segname
[16] = '\0';
4863 seg
->vmaddr
= bfd_h_get_64 (abfd
, raw
.vmaddr
);
4864 seg
->vmsize
= bfd_h_get_64 (abfd
, raw
.vmsize
);
4865 seg
->fileoff
= bfd_h_get_64 (abfd
, raw
.fileoff
);
4866 seg
->filesize
= bfd_h_get_64 (abfd
, raw
.filesize
);
4867 seg
->maxprot
= bfd_h_get_32 (abfd
, raw
.maxprot
);
4868 seg
->initprot
= bfd_h_get_32 (abfd
, raw
.initprot
);
4869 seg
->nsects
= bfd_h_get_32 (abfd
, raw
.nsects
);
4870 seg
->flags
= bfd_h_get_32 (abfd
, raw
.flags
);
4874 struct mach_o_segment_command_32_external raw
;
4876 BFD_ASSERT (command
->type
== BFD_MACH_O_LC_SEGMENT
);
4878 if (command
->len
< sizeof (raw
) + 8)
4880 if (bfd_bread (&raw
, sizeof (raw
), abfd
) != sizeof (raw
))
4883 memcpy (seg
->segname
, raw
.segname
, 16);
4884 seg
->segname
[16] = '\0';
4886 seg
->vmaddr
= bfd_h_get_32 (abfd
, raw
.vmaddr
);
4887 seg
->vmsize
= bfd_h_get_32 (abfd
, raw
.vmsize
);
4888 seg
->fileoff
= bfd_h_get_32 (abfd
, raw
.fileoff
);
4889 seg
->filesize
= bfd_h_get_32 (abfd
, raw
.filesize
);
4890 seg
->maxprot
= bfd_h_get_32 (abfd
, raw
.maxprot
);
4891 seg
->initprot
= bfd_h_get_32 (abfd
, raw
.initprot
);
4892 seg
->nsects
= bfd_h_get_32 (abfd
, raw
.nsects
);
4893 seg
->flags
= bfd_h_get_32 (abfd
, raw
.flags
);
4895 seg
->sect_head
= NULL
;
4896 seg
->sect_tail
= NULL
;
4898 for (i
= 0; i
< seg
->nsects
; i
++)
4902 sec
= bfd_mach_o_read_section (abfd
, seg
->initprot
, wide
);
4906 bfd_mach_o_append_section_to_segment
4907 (seg
, bfd_mach_o_get_mach_o_section (sec
));
4914 bfd_mach_o_read_segment_32 (bfd
*abfd
, bfd_mach_o_load_command
*command
)
4916 return bfd_mach_o_read_segment (abfd
, command
, 0);
4920 bfd_mach_o_read_segment_64 (bfd
*abfd
, bfd_mach_o_load_command
*command
)
4922 return bfd_mach_o_read_segment (abfd
, command
, 1);
4926 bfd_mach_o_read_command (bfd
*abfd
, bfd_mach_o_load_command
*command
,
4929 bfd_mach_o_data_struct
*mdata
= bfd_mach_o_get_data (abfd
);
4930 struct mach_o_load_command_external raw
;
4933 /* Read command type and length. */
4934 if (bfd_seek (abfd
, mdata
->hdr_offset
+ command
->offset
, SEEK_SET
) != 0
4935 || bfd_bread (&raw
, BFD_MACH_O_LC_SIZE
, abfd
) != BFD_MACH_O_LC_SIZE
)
4938 cmd
= bfd_h_get_32 (abfd
, raw
.cmd
);
4939 command
->type
= cmd
& ~BFD_MACH_O_LC_REQ_DYLD
;
4940 command
->type_required
= (cmd
& BFD_MACH_O_LC_REQ_DYLD
) != 0;
4941 command
->len
= bfd_h_get_32 (abfd
, raw
.cmdsize
);
4942 if (command
->len
< 8 || command
->len
% 4 != 0)
4945 switch (command
->type
)
4947 case BFD_MACH_O_LC_SEGMENT
:
4948 if (!bfd_mach_o_read_segment_32 (abfd
, command
))
4951 case BFD_MACH_O_LC_SEGMENT_64
:
4952 if (!bfd_mach_o_read_segment_64 (abfd
, command
))
4955 case BFD_MACH_O_LC_SYMTAB
:
4956 if (!bfd_mach_o_read_symtab (abfd
, command
, filesize
))
4959 case BFD_MACH_O_LC_SYMSEG
:
4961 case BFD_MACH_O_LC_THREAD
:
4962 case BFD_MACH_O_LC_UNIXTHREAD
:
4963 if (!bfd_mach_o_read_thread (abfd
, command
))
4966 case BFD_MACH_O_LC_LOAD_DYLINKER
:
4967 case BFD_MACH_O_LC_ID_DYLINKER
:
4968 case BFD_MACH_O_LC_DYLD_ENVIRONMENT
:
4969 if (!bfd_mach_o_read_dylinker (abfd
, command
))
4972 case BFD_MACH_O_LC_LOAD_DYLIB
:
4973 case BFD_MACH_O_LC_LAZY_LOAD_DYLIB
:
4974 case BFD_MACH_O_LC_ID_DYLIB
:
4975 case BFD_MACH_O_LC_LOAD_WEAK_DYLIB
:
4976 case BFD_MACH_O_LC_REEXPORT_DYLIB
:
4977 case BFD_MACH_O_LC_LOAD_UPWARD_DYLIB
:
4978 if (!bfd_mach_o_read_dylib (abfd
, command
))
4981 case BFD_MACH_O_LC_PREBOUND_DYLIB
:
4982 if (!bfd_mach_o_read_prebound_dylib (abfd
, command
))
4985 case BFD_MACH_O_LC_LOADFVMLIB
:
4986 case BFD_MACH_O_LC_IDFVMLIB
:
4987 if (!bfd_mach_o_read_fvmlib (abfd
, command
))
4990 case BFD_MACH_O_LC_IDENT
:
4991 case BFD_MACH_O_LC_FVMFILE
:
4992 case BFD_MACH_O_LC_PREPAGE
:
4993 case BFD_MACH_O_LC_ROUTINES
:
4994 case BFD_MACH_O_LC_ROUTINES_64
:
4996 case BFD_MACH_O_LC_SUB_FRAMEWORK
:
4997 case BFD_MACH_O_LC_SUB_UMBRELLA
:
4998 case BFD_MACH_O_LC_SUB_LIBRARY
:
4999 case BFD_MACH_O_LC_SUB_CLIENT
:
5000 case BFD_MACH_O_LC_RPATH
:
5001 if (!bfd_mach_o_read_str (abfd
, command
))
5004 case BFD_MACH_O_LC_DYSYMTAB
:
5005 if (!bfd_mach_o_read_dysymtab (abfd
, command
, filesize
))
5008 case BFD_MACH_O_LC_PREBIND_CKSUM
:
5009 if (!bfd_mach_o_read_prebind_cksum (abfd
, command
))
5012 case BFD_MACH_O_LC_TWOLEVEL_HINTS
:
5013 if (!bfd_mach_o_read_twolevel_hints (abfd
, command
))
5016 case BFD_MACH_O_LC_UUID
:
5017 if (!bfd_mach_o_read_uuid (abfd
, command
))
5020 case BFD_MACH_O_LC_CODE_SIGNATURE
:
5021 case BFD_MACH_O_LC_SEGMENT_SPLIT_INFO
:
5022 case BFD_MACH_O_LC_FUNCTION_STARTS
:
5023 case BFD_MACH_O_LC_DATA_IN_CODE
:
5024 case BFD_MACH_O_LC_DYLIB_CODE_SIGN_DRS
:
5025 case BFD_MACH_O_LC_LINKER_OPTIMIZATION_HINT
:
5026 case BFD_MACH_O_LC_DYLD_EXPORTS_TRIE
:
5027 case BFD_MACH_O_LC_DYLD_CHAINED_FIXUPS
:
5028 if (!bfd_mach_o_read_linkedit (abfd
, command
))
5031 case BFD_MACH_O_LC_ENCRYPTION_INFO
:
5032 if (!bfd_mach_o_read_encryption_info (abfd
, command
))
5035 case BFD_MACH_O_LC_ENCRYPTION_INFO_64
:
5036 if (!bfd_mach_o_read_encryption_info_64 (abfd
, command
))
5039 case BFD_MACH_O_LC_DYLD_INFO
:
5040 if (!bfd_mach_o_read_dyld_info (abfd
, command
))
5043 case BFD_MACH_O_LC_VERSION_MIN_MACOSX
:
5044 case BFD_MACH_O_LC_VERSION_MIN_IPHONEOS
:
5045 case BFD_MACH_O_LC_VERSION_MIN_WATCHOS
:
5046 case BFD_MACH_O_LC_VERSION_MIN_TVOS
:
5047 if (!bfd_mach_o_read_version_min (abfd
, command
))
5050 case BFD_MACH_O_LC_MAIN
:
5051 if (!bfd_mach_o_read_main (abfd
, command
))
5054 case BFD_MACH_O_LC_SOURCE_VERSION
:
5055 if (!bfd_mach_o_read_source_version (abfd
, command
))
5058 case BFD_MACH_O_LC_LINKER_OPTIONS
:
5060 case BFD_MACH_O_LC_NOTE
:
5061 if (!bfd_mach_o_read_note (abfd
, command
))
5064 case BFD_MACH_O_LC_BUILD_VERSION
:
5065 if (!bfd_mach_o_read_build_version (abfd
, command
))
5070 _bfd_error_handler (_("%pB: unknown load command %#x"),
5071 abfd
, command
->type
);
5079 bfd_mach_o_flatten_sections (bfd
*abfd
)
5081 bfd_mach_o_data_struct
*mdata
= bfd_mach_o_get_data (abfd
);
5082 bfd_mach_o_load_command
*cmd
;
5086 /* Count total number of sections. */
5089 for (cmd
= mdata
->first_command
; cmd
!= NULL
; cmd
= cmd
->next
)
5091 if (cmd
->type
== BFD_MACH_O_LC_SEGMENT
5092 || cmd
->type
== BFD_MACH_O_LC_SEGMENT_64
)
5094 bfd_mach_o_segment_command
*seg
= &cmd
->command
.segment
;
5096 mdata
->nsects
+= seg
->nsects
;
5100 /* Allocate sections array. */
5101 if (_bfd_mul_overflow (mdata
->nsects
, sizeof (bfd_mach_o_section
*), &amt
))
5103 bfd_set_error (bfd_error_file_too_big
);
5106 mdata
->sections
= bfd_alloc (abfd
, amt
);
5107 if (mdata
->sections
== NULL
&& mdata
->nsects
!= 0)
5110 /* Fill the array. */
5113 for (cmd
= mdata
->first_command
; cmd
!= NULL
; cmd
= cmd
->next
)
5115 if (cmd
->type
== BFD_MACH_O_LC_SEGMENT
5116 || cmd
->type
== BFD_MACH_O_LC_SEGMENT_64
)
5118 bfd_mach_o_segment_command
*seg
= &cmd
->command
.segment
;
5119 bfd_mach_o_section
*sec
;
5121 BFD_ASSERT (csect
+ seg
->nsects
<= mdata
->nsects
);
5123 for (sec
= seg
->sect_head
; sec
!= NULL
; sec
= sec
->next
)
5124 mdata
->sections
[csect
++] = sec
;
5131 bfd_mach_o_scan_start_address (bfd
*abfd
)
5133 bfd_mach_o_data_struct
*mdata
= bfd_mach_o_get_data (abfd
);
5134 bfd_mach_o_thread_command
*thr
= NULL
;
5135 bfd_mach_o_load_command
*cmd
;
5138 for (cmd
= mdata
->first_command
; cmd
!= NULL
; cmd
= cmd
->next
)
5139 if (cmd
->type
== BFD_MACH_O_LC_THREAD
5140 || cmd
->type
== BFD_MACH_O_LC_UNIXTHREAD
)
5142 thr
= &cmd
->command
.thread
;
5145 else if (cmd
->type
== BFD_MACH_O_LC_MAIN
&& mdata
->nsects
> 1)
5147 bfd_mach_o_main_command
*main_cmd
= &cmd
->command
.main
;
5148 bfd_mach_o_section
*text_sect
= mdata
->sections
[0];
5152 abfd
->start_address
= main_cmd
->entryoff
5153 + (text_sect
->addr
- text_sect
->offset
);
5158 /* An object file has no start address, so do not fail if not found. */
5162 /* FIXME: create a subtarget hook ? */
5163 for (i
= 0; i
< thr
->nflavours
; i
++)
5165 if ((mdata
->header
.cputype
== BFD_MACH_O_CPU_TYPE_I386
)
5166 && (thr
->flavours
[i
].flavour
== BFD_MACH_O_x86_THREAD_STATE32
))
5168 unsigned char buf
[4];
5170 if (bfd_seek (abfd
, thr
->flavours
[i
].offset
+ 40, SEEK_SET
) != 0
5171 || bfd_bread (buf
, 4, abfd
) != 4)
5174 abfd
->start_address
= bfd_h_get_32 (abfd
, buf
);
5176 else if ((mdata
->header
.cputype
== BFD_MACH_O_CPU_TYPE_POWERPC
)
5177 && (thr
->flavours
[i
].flavour
== BFD_MACH_O_PPC_THREAD_STATE
))
5179 unsigned char buf
[4];
5181 if (bfd_seek (abfd
, thr
->flavours
[i
].offset
+ 0, SEEK_SET
) != 0
5182 || bfd_bread (buf
, 4, abfd
) != 4)
5185 abfd
->start_address
= bfd_h_get_32 (abfd
, buf
);
5187 else if ((mdata
->header
.cputype
== BFD_MACH_O_CPU_TYPE_POWERPC_64
)
5188 && (thr
->flavours
[i
].flavour
== BFD_MACH_O_PPC_THREAD_STATE64
))
5190 unsigned char buf
[8];
5192 if (bfd_seek (abfd
, thr
->flavours
[i
].offset
+ 0, SEEK_SET
) != 0
5193 || bfd_bread (buf
, 8, abfd
) != 8)
5196 abfd
->start_address
= bfd_h_get_64 (abfd
, buf
);
5198 else if ((mdata
->header
.cputype
== BFD_MACH_O_CPU_TYPE_X86_64
)
5199 && (thr
->flavours
[i
].flavour
== BFD_MACH_O_x86_THREAD_STATE64
))
5201 unsigned char buf
[8];
5203 if (bfd_seek (abfd
, thr
->flavours
[i
].offset
+ (16 * 8), SEEK_SET
) != 0
5204 || bfd_bread (buf
, 8, abfd
) != 8)
5207 abfd
->start_address
= bfd_h_get_64 (abfd
, buf
);
5215 bfd_mach_o_set_arch_mach (bfd
*abfd
,
5216 enum bfd_architecture arch
,
5217 unsigned long machine
)
5219 bfd_mach_o_backend_data
*bed
= bfd_mach_o_get_backend_data (abfd
);
5221 /* If this isn't the right architecture for this backend, and this
5222 isn't the generic backend, fail. */
5223 if (arch
!= bed
->arch
5224 && arch
!= bfd_arch_unknown
5225 && bed
->arch
!= bfd_arch_unknown
)
5228 return bfd_default_set_arch_mach (abfd
, arch
, machine
);
5232 bfd_mach_o_scan (bfd
*abfd
,
5233 bfd_mach_o_header
*header
,
5234 bfd_mach_o_data_struct
*mdata
)
5237 enum bfd_architecture cpu_type
;
5238 unsigned long cpu_subtype
;
5239 unsigned int hdrsize
;
5241 hdrsize
= mach_o_wide_p (header
) ?
5242 BFD_MACH_O_HEADER_64_SIZE
: BFD_MACH_O_HEADER_SIZE
;
5244 mdata
->header
= *header
;
5246 abfd
->flags
= abfd
->flags
& BFD_IN_MEMORY
;
5247 switch (header
->filetype
)
5249 case BFD_MACH_O_MH_OBJECT
:
5250 abfd
->flags
|= HAS_RELOC
;
5252 case BFD_MACH_O_MH_EXECUTE
:
5253 abfd
->flags
|= EXEC_P
;
5255 case BFD_MACH_O_MH_DYLIB
:
5256 case BFD_MACH_O_MH_BUNDLE
:
5257 abfd
->flags
|= DYNAMIC
;
5261 abfd
->tdata
.mach_o_data
= mdata
;
5263 bfd_mach_o_convert_architecture (header
->cputype
, header
->cpusubtype
,
5264 &cpu_type
, &cpu_subtype
);
5265 if (cpu_type
== bfd_arch_unknown
)
5268 /* xgettext:c-format */
5269 (_("bfd_mach_o_scan: unknown architecture 0x%lx/0x%lx"),
5270 header
->cputype
, header
->cpusubtype
);
5274 bfd_set_arch_mach (abfd
, cpu_type
, cpu_subtype
);
5276 if (header
->ncmds
!= 0)
5278 bfd_mach_o_load_command
*cmd
;
5280 ufile_ptr filesize
= bfd_get_file_size (abfd
);
5283 filesize
= (ufile_ptr
) -1;
5285 mdata
->first_command
= NULL
;
5286 mdata
->last_command
= NULL
;
5288 if (header
->ncmds
> (filesize
- hdrsize
) / BFD_MACH_O_LC_SIZE
)
5290 bfd_set_error (bfd_error_file_truncated
);
5293 if (_bfd_mul_overflow (header
->ncmds
,
5294 sizeof (bfd_mach_o_load_command
), &amt
))
5296 bfd_set_error (bfd_error_file_too_big
);
5299 cmd
= bfd_alloc (abfd
, amt
);
5303 for (i
= 0; i
< header
->ncmds
; i
++)
5305 bfd_mach_o_load_command
*cur
= &cmd
[i
];
5307 bfd_mach_o_append_command (abfd
, cur
);
5310 cur
->offset
= hdrsize
;
5313 bfd_mach_o_load_command
*prev
= &cmd
[i
- 1];
5314 cur
->offset
= prev
->offset
+ prev
->len
;
5317 if (!bfd_mach_o_read_command (abfd
, cur
, filesize
))
5322 /* Sections should be flatten before scanning start address. */
5323 if (!bfd_mach_o_flatten_sections (abfd
))
5325 if (!bfd_mach_o_scan_start_address (abfd
))
5332 bfd_mach_o_mkobject_init (bfd
*abfd
)
5334 bfd_mach_o_data_struct
*mdata
= NULL
;
5336 mdata
= bfd_zalloc (abfd
, sizeof (bfd_mach_o_data_struct
));
5339 abfd
->tdata
.mach_o_data
= mdata
;
5341 mdata
->header
.magic
= 0;
5342 mdata
->header
.cputype
= 0;
5343 mdata
->header
.cpusubtype
= 0;
5344 mdata
->header
.filetype
= 0;
5345 mdata
->header
.ncmds
= 0;
5346 mdata
->header
.sizeofcmds
= 0;
5347 mdata
->header
.flags
= 0;
5348 mdata
->header
.byteorder
= BFD_ENDIAN_UNKNOWN
;
5349 mdata
->first_command
= NULL
;
5350 mdata
->last_command
= NULL
;
5352 mdata
->sections
= NULL
;
5353 mdata
->dyn_reloc_cache
= NULL
;
5359 bfd_mach_o_gen_mkobject (bfd
*abfd
)
5361 bfd_mach_o_data_struct
*mdata
;
5363 if (!bfd_mach_o_mkobject_init (abfd
))
5366 mdata
= bfd_mach_o_get_data (abfd
);
5367 mdata
->header
.magic
= BFD_MACH_O_MH_MAGIC
;
5368 mdata
->header
.cputype
= 0;
5369 mdata
->header
.cpusubtype
= 0;
5370 mdata
->header
.byteorder
= abfd
->xvec
->byteorder
;
5371 mdata
->header
.version
= 1;
5377 bfd_mach_o_header_p (bfd
*abfd
,
5379 bfd_mach_o_filetype file_type
,
5380 bfd_mach_o_cpu_type cpu_type
)
5382 bfd_mach_o_header header
;
5383 bfd_mach_o_data_struct
*mdata
;
5385 if (!bfd_mach_o_read_header (abfd
, hdr_off
, &header
))
5388 if (! (header
.byteorder
== BFD_ENDIAN_BIG
5389 || header
.byteorder
== BFD_ENDIAN_LITTLE
))
5391 _bfd_error_handler (_("unknown header byte-order value %#x"),
5396 if (! ((header
.byteorder
== BFD_ENDIAN_BIG
5397 && abfd
->xvec
->byteorder
== BFD_ENDIAN_BIG
5398 && abfd
->xvec
->header_byteorder
== BFD_ENDIAN_BIG
)
5399 || (header
.byteorder
== BFD_ENDIAN_LITTLE
5400 && abfd
->xvec
->byteorder
== BFD_ENDIAN_LITTLE
5401 && abfd
->xvec
->header_byteorder
== BFD_ENDIAN_LITTLE
)))
5404 /* Check cputype and filetype.
5405 In case of wildcard, do not accept magics that are handled by existing
5409 if (header
.cputype
!= cpu_type
)
5415 /* Do not recognize 64 architectures if not configured for 64bit targets.
5416 This could happen only for generic targets. */
5417 if (mach_o_wide_p (&header
))
5424 if (header
.filetype
!= file_type
)
5429 switch (header
.filetype
)
5431 case BFD_MACH_O_MH_CORE
:
5432 /* Handled by core_p */
5439 mdata
= (bfd_mach_o_data_struct
*) bfd_zalloc (abfd
, sizeof (*mdata
));
5442 mdata
->hdr_offset
= hdr_off
;
5444 if (!bfd_mach_o_scan (abfd
, &header
, mdata
))
5447 return _bfd_no_cleanup
;
5450 bfd_set_error (bfd_error_wrong_format
);
5457 bfd_mach_o_gen_object_p (bfd
*abfd
)
5459 return bfd_mach_o_header_p (abfd
, 0, 0, 0);
5463 bfd_mach_o_gen_core_p (bfd
*abfd
)
5465 return bfd_mach_o_header_p (abfd
, 0, BFD_MACH_O_MH_CORE
, 0);
5468 /* Return the base address of ABFD, ie the address at which the image is
5469 mapped. The possible initial pagezero is ignored. */
5472 bfd_mach_o_get_base_address (bfd
*abfd
)
5474 bfd_mach_o_data_struct
*mdata
;
5475 bfd_mach_o_load_command
*cmd
;
5477 /* Check for Mach-O. */
5478 if (!bfd_mach_o_valid (abfd
))
5480 mdata
= bfd_mach_o_get_data (abfd
);
5482 for (cmd
= mdata
->first_command
; cmd
!= NULL
; cmd
= cmd
->next
)
5484 if ((cmd
->type
== BFD_MACH_O_LC_SEGMENT
5485 || cmd
->type
== BFD_MACH_O_LC_SEGMENT_64
))
5487 struct bfd_mach_o_segment_command
*segcmd
= &cmd
->command
.segment
;
5489 if (segcmd
->initprot
!= 0)
5490 return segcmd
->vmaddr
;
5496 typedef struct mach_o_fat_archentry
5498 unsigned long cputype
;
5499 unsigned long cpusubtype
;
5500 unsigned long offset
;
5502 unsigned long align
;
5503 } mach_o_fat_archentry
;
5505 typedef struct mach_o_fat_data_struct
5507 unsigned long magic
;
5508 unsigned long nfat_arch
;
5509 mach_o_fat_archentry
*archentries
;
5510 } mach_o_fat_data_struct
;
5512 /* Check for overlapping archive elements. Note that we can't allow
5513 multiple elements at the same offset even if one is empty, because
5514 bfd_mach_o_fat_openr_next_archived_file assume distinct offsets. */
5516 overlap_previous (const mach_o_fat_archentry
*elt
, unsigned long i
)
5518 unsigned long j
= i
;
5520 if (elt
[i
].offset
== elt
[j
].offset
5521 || (elt
[i
].offset
> elt
[j
].offset
5522 ? elt
[i
].offset
- elt
[j
].offset
< elt
[j
].size
5523 : elt
[j
].offset
- elt
[i
].offset
< elt
[i
].size
))
5529 bfd_mach_o_fat_archive_p (bfd
*abfd
)
5531 mach_o_fat_data_struct
*adata
= NULL
;
5532 struct mach_o_fat_header_external hdr
;
5537 if (bfd_seek (abfd
, 0, SEEK_SET
) != 0
5538 || bfd_bread (&hdr
, sizeof (hdr
), abfd
) != sizeof (hdr
))
5541 adata
= bfd_alloc (abfd
, sizeof (mach_o_fat_data_struct
));
5545 adata
->magic
= bfd_getb32 (hdr
.magic
);
5546 adata
->nfat_arch
= bfd_getb32 (hdr
.nfat_arch
);
5547 if (adata
->magic
!= 0xcafebabe)
5549 /* Avoid matching Java bytecode files, which have the same magic number.
5550 In the Java bytecode file format this field contains the JVM version,
5551 which starts at 43.0. */
5552 if (adata
->nfat_arch
> 30)
5555 if (_bfd_mul_overflow (adata
->nfat_arch
,
5556 sizeof (mach_o_fat_archentry
), &amt
))
5558 bfd_set_error (bfd_error_file_too_big
);
5561 adata
->archentries
= bfd_alloc (abfd
, amt
);
5562 if (adata
->archentries
== NULL
)
5565 filesize
= bfd_get_file_size (abfd
);
5566 for (i
= 0; i
< adata
->nfat_arch
; i
++)
5568 struct mach_o_fat_arch_external arch
;
5569 if (bfd_bread (&arch
, sizeof (arch
), abfd
) != sizeof (arch
))
5571 adata
->archentries
[i
].cputype
= bfd_getb32 (arch
.cputype
);
5572 adata
->archentries
[i
].cpusubtype
= bfd_getb32 (arch
.cpusubtype
);
5573 adata
->archentries
[i
].offset
= bfd_getb32 (arch
.offset
);
5574 adata
->archentries
[i
].size
= bfd_getb32 (arch
.size
);
5575 adata
->archentries
[i
].align
= bfd_getb32 (arch
.align
);
5577 && (adata
->archentries
[i
].offset
> filesize
5578 || (adata
->archentries
[i
].size
5579 > filesize
- adata
->archentries
[i
].offset
)))
5580 || (adata
->archentries
[i
].offset
5581 < sizeof (hdr
) + adata
->nfat_arch
* sizeof (arch
))
5582 || overlap_previous (adata
->archentries
, i
))
5584 bfd_release (abfd
, adata
);
5585 bfd_set_error (bfd_error_malformed_archive
);
5590 abfd
->tdata
.mach_o_fat_data
= adata
;
5592 return _bfd_no_cleanup
;
5596 bfd_release (abfd
, adata
);
5597 bfd_set_error (bfd_error_wrong_format
);
5601 /* Set the filename for a fat binary member ABFD, whose bfd architecture is
5602 ARCH_TYPE/ARCH_SUBTYPE and corresponding entry in header is ENTRY.
5603 Set arelt_data and origin fields too. */
5606 bfd_mach_o_fat_member_init (bfd
*abfd
,
5607 enum bfd_architecture arch_type
,
5608 unsigned long arch_subtype
,
5609 mach_o_fat_archentry
*entry
)
5611 struct areltdata
*areltdata
;
5612 /* Create the member filename. Use ARCH_NAME. */
5613 const bfd_arch_info_type
*ap
= bfd_lookup_arch (arch_type
, arch_subtype
);
5614 const char *filename
;
5618 /* Use the architecture name if known. */
5619 filename
= bfd_set_filename (abfd
, ap
->printable_name
);
5623 /* Forge a uniq id. */
5624 char buf
[2 + 8 + 1 + 2 + 8 + 1];
5625 snprintf (buf
, sizeof (buf
), "0x%lx-0x%lx",
5626 entry
->cputype
, entry
->cpusubtype
);
5627 filename
= bfd_set_filename (abfd
, buf
);
5632 areltdata
= bfd_zmalloc (sizeof (struct areltdata
));
5633 if (areltdata
== NULL
)
5635 areltdata
->parsed_size
= entry
->size
;
5636 abfd
->arelt_data
= areltdata
;
5637 abfd
->iostream
= NULL
;
5638 abfd
->origin
= entry
->offset
;
5643 bfd_mach_o_fat_openr_next_archived_file (bfd
*archive
, bfd
*prev
)
5645 mach_o_fat_data_struct
*adata
;
5646 mach_o_fat_archentry
*entry
= NULL
;
5649 enum bfd_architecture arch_type
;
5650 unsigned long arch_subtype
;
5652 adata
= (mach_o_fat_data_struct
*) archive
->tdata
.mach_o_fat_data
;
5653 BFD_ASSERT (adata
!= NULL
);
5655 /* Find index of previous entry. */
5658 /* Start at first one. */
5663 /* Find index of PREV. */
5664 for (i
= 0; i
< adata
->nfat_arch
; i
++)
5666 if (adata
->archentries
[i
].offset
== prev
->origin
)
5670 if (i
== adata
->nfat_arch
)
5673 bfd_set_error (bfd_error_bad_value
);
5677 /* Get next entry. */
5681 if (i
>= adata
->nfat_arch
)
5683 bfd_set_error (bfd_error_no_more_archived_files
);
5687 entry
= &adata
->archentries
[i
];
5688 nbfd
= _bfd_new_bfd_contained_in (archive
);
5692 bfd_mach_o_convert_architecture (entry
->cputype
, entry
->cpusubtype
,
5693 &arch_type
, &arch_subtype
);
5695 if (!bfd_mach_o_fat_member_init (nbfd
, arch_type
, arch_subtype
, entry
))
5701 bfd_set_arch_mach (nbfd
, arch_type
, arch_subtype
);
5706 /* Analogous to stat call. */
5709 bfd_mach_o_fat_stat_arch_elt (bfd
*abfd
, struct stat
*buf
)
5711 if (abfd
->arelt_data
== NULL
)
5713 bfd_set_error (bfd_error_invalid_operation
);
5720 buf
->st_mode
= 0644;
5721 buf
->st_size
= arelt_size (abfd
);
5726 /* If ABFD format is FORMAT and architecture is ARCH, return it.
5727 If ABFD is a fat image containing a member that corresponds to FORMAT
5728 and ARCH, returns it.
5729 In other case, returns NULL.
5730 This function allows transparent uses of fat images. */
5733 bfd_mach_o_fat_extract (bfd
*abfd
,
5735 const bfd_arch_info_type
*arch
)
5738 mach_o_fat_data_struct
*adata
;
5741 if (bfd_check_format (abfd
, format
))
5743 if (bfd_get_arch_info (abfd
) == arch
)
5747 if (!bfd_check_format (abfd
, bfd_archive
)
5748 || abfd
->xvec
!= &mach_o_fat_vec
)
5751 /* This is a Mach-O fat image. */
5752 adata
= (mach_o_fat_data_struct
*) abfd
->tdata
.mach_o_fat_data
;
5753 BFD_ASSERT (adata
!= NULL
);
5755 for (i
= 0; i
< adata
->nfat_arch
; i
++)
5757 struct mach_o_fat_archentry
*e
= &adata
->archentries
[i
];
5758 enum bfd_architecture cpu_type
;
5759 unsigned long cpu_subtype
;
5761 bfd_mach_o_convert_architecture (e
->cputype
, e
->cpusubtype
,
5762 &cpu_type
, &cpu_subtype
);
5763 if (cpu_type
!= arch
->arch
|| cpu_subtype
!= arch
->mach
)
5766 /* The architecture is found. */
5767 res
= _bfd_new_bfd_contained_in (abfd
);
5771 if (bfd_mach_o_fat_member_init (res
, cpu_type
, cpu_subtype
, e
)
5772 && bfd_check_format (res
, format
))
5774 BFD_ASSERT (bfd_get_arch_info (res
) == arch
);
5785 bfd_mach_o_fat_close_and_cleanup (bfd
*abfd
)
5787 _bfd_unlink_from_archive_parent (abfd
);
5792 bfd_mach_o_lookup_command (bfd
*abfd
,
5793 bfd_mach_o_load_command_type type
,
5794 bfd_mach_o_load_command
**mcommand
)
5796 struct mach_o_data_struct
*mdata
= bfd_mach_o_get_data (abfd
);
5797 struct bfd_mach_o_load_command
*cmd
;
5800 BFD_ASSERT (mdata
!= NULL
);
5801 BFD_ASSERT (mcommand
!= NULL
);
5804 for (cmd
= mdata
->first_command
; cmd
!= NULL
; cmd
= cmd
->next
)
5806 if (cmd
->type
!= type
)
5818 bfd_mach_o_stack_addr (enum bfd_mach_o_cpu_type type
)
5822 case BFD_MACH_O_CPU_TYPE_MC680x0
:
5824 case BFD_MACH_O_CPU_TYPE_POWERPC
:
5826 case BFD_MACH_O_CPU_TYPE_I386
:
5828 case BFD_MACH_O_CPU_TYPE_SPARC
:
5830 case BFD_MACH_O_CPU_TYPE_HPPA
:
5831 return 0xc0000000 - 0x04000000;
5837 /* The following two tables should be kept, as far as possible, in order of
5838 most frequently used entries to optimize their use from gas. */
5840 const bfd_mach_o_xlat_name bfd_mach_o_section_type_name
[] =
5842 { "regular", BFD_MACH_O_S_REGULAR
},
5843 { "coalesced", BFD_MACH_O_S_COALESCED
},
5844 { "zerofill", BFD_MACH_O_S_ZEROFILL
},
5845 { "cstring_literals", BFD_MACH_O_S_CSTRING_LITERALS
},
5846 { "4byte_literals", BFD_MACH_O_S_4BYTE_LITERALS
},
5847 { "8byte_literals", BFD_MACH_O_S_8BYTE_LITERALS
},
5848 { "16byte_literals", BFD_MACH_O_S_16BYTE_LITERALS
},
5849 { "literal_pointers", BFD_MACH_O_S_LITERAL_POINTERS
},
5850 { "mod_init_func_pointers", BFD_MACH_O_S_MOD_INIT_FUNC_POINTERS
},
5851 { "mod_fini_func_pointers", BFD_MACH_O_S_MOD_FINI_FUNC_POINTERS
},
5852 { "gb_zerofill", BFD_MACH_O_S_GB_ZEROFILL
},
5853 { "interposing", BFD_MACH_O_S_INTERPOSING
},
5854 { "dtrace_dof", BFD_MACH_O_S_DTRACE_DOF
},
5855 { "non_lazy_symbol_pointers", BFD_MACH_O_S_NON_LAZY_SYMBOL_POINTERS
},
5856 { "lazy_symbol_pointers", BFD_MACH_O_S_LAZY_SYMBOL_POINTERS
},
5857 { "symbol_stubs", BFD_MACH_O_S_SYMBOL_STUBS
},
5858 { "lazy_dylib_symbol_pointers", BFD_MACH_O_S_LAZY_DYLIB_SYMBOL_POINTERS
},
5862 const bfd_mach_o_xlat_name bfd_mach_o_section_attribute_name
[] =
5864 { "pure_instructions", BFD_MACH_O_S_ATTR_PURE_INSTRUCTIONS
},
5865 { "some_instructions", BFD_MACH_O_S_ATTR_SOME_INSTRUCTIONS
},
5866 { "loc_reloc", BFD_MACH_O_S_ATTR_LOC_RELOC
},
5867 { "ext_reloc", BFD_MACH_O_S_ATTR_EXT_RELOC
},
5868 { "debug", BFD_MACH_O_S_ATTR_DEBUG
},
5869 { "live_support", BFD_MACH_O_S_ATTR_LIVE_SUPPORT
},
5870 { "no_dead_strip", BFD_MACH_O_S_ATTR_NO_DEAD_STRIP
},
5871 { "strip_static_syms", BFD_MACH_O_S_ATTR_STRIP_STATIC_SYMS
},
5872 { "no_toc", BFD_MACH_O_S_ATTR_NO_TOC
},
5873 { "self_modifying_code", BFD_MACH_O_S_SELF_MODIFYING_CODE
},
5874 { "modifying_code", BFD_MACH_O_S_SELF_MODIFYING_CODE
},
5878 /* Get the section type from NAME. Return 256 if NAME is unknown. */
5881 bfd_mach_o_get_section_type_from_name (bfd
*abfd
, const char *name
)
5883 const bfd_mach_o_xlat_name
*x
;
5884 bfd_mach_o_backend_data
*bed
= bfd_mach_o_get_backend_data (abfd
);
5886 for (x
= bfd_mach_o_section_type_name
; x
->name
; x
++)
5887 if (strcmp (x
->name
, name
) == 0)
5889 /* We found it... does the target support it? */
5890 if (bed
->bfd_mach_o_section_type_valid_for_target
== NULL
5891 || bed
->bfd_mach_o_section_type_valid_for_target (x
->val
))
5892 return x
->val
; /* OK. */
5894 break; /* Not supported. */
5896 /* Maximum section ID = 0xff. */
5900 /* Get the section attribute from NAME. Return -1 if NAME is unknown. */
5903 bfd_mach_o_get_section_attribute_from_name (const char *name
)
5905 const bfd_mach_o_xlat_name
*x
;
5907 for (x
= bfd_mach_o_section_attribute_name
; x
->name
; x
++)
5908 if (strcmp (x
->name
, name
) == 0)
5910 return (unsigned int)-1;
5914 bfd_mach_o_core_fetch_environment (bfd
*abfd
,
5915 unsigned char **rbuf
,
5918 bfd_mach_o_data_struct
*mdata
= bfd_mach_o_get_data (abfd
);
5919 unsigned long stackaddr
= bfd_mach_o_stack_addr (mdata
->header
.cputype
);
5920 bfd_mach_o_load_command
*cmd
;
5922 for (cmd
= mdata
->first_command
; cmd
!= NULL
; cmd
= cmd
->next
)
5924 bfd_mach_o_segment_command
*seg
;
5926 if (cmd
->type
!= BFD_MACH_O_LC_SEGMENT
)
5929 seg
= &cmd
->command
.segment
;
5931 if ((seg
->vmaddr
+ seg
->vmsize
) == stackaddr
)
5933 unsigned long start
= seg
->fileoff
;
5934 unsigned long end
= seg
->fileoff
+ seg
->filesize
;
5935 unsigned char *buf
= bfd_malloc (1024);
5936 unsigned long size
= 1024;
5942 bfd_size_type nread
= 0;
5943 unsigned long offset
;
5944 int found_nonnull
= 0;
5946 if (size
> (end
- start
))
5947 size
= (end
- start
);
5949 buf
= bfd_realloc_or_free (buf
, size
);
5953 if (bfd_seek (abfd
, end
- size
, SEEK_SET
) != 0)
5959 nread
= bfd_bread (buf
, size
, abfd
);
5967 for (offset
= 4; offset
<= size
; offset
+= 4)
5971 val
= bfd_get_32(abfd
, buf
+ size
- offset
);
5973 if (! found_nonnull
)
5978 else if (val
== 0x0)
5980 unsigned long bottom
;
5983 bottom
= seg
->fileoff
+ seg
->filesize
- offset
;
5984 top
= seg
->fileoff
+ seg
->filesize
- 4;
5985 *rbuf
= bfd_malloc (top
- bottom
);
5988 *rlen
= top
- bottom
;
5990 memcpy (*rbuf
, buf
+ size
- *rlen
, *rlen
);
5996 if (size
== (end
- start
))
6010 bfd_mach_o_core_file_failing_command (bfd
*abfd
)
6012 unsigned char *buf
= NULL
;
6013 unsigned int len
= 0;
6016 ret
= bfd_mach_o_core_fetch_environment (abfd
, &buf
, &len
);
6020 return (char *) buf
;
6024 bfd_mach_o_core_file_failing_signal (bfd
*abfd ATTRIBUTE_UNUSED
)
6029 static bfd_mach_o_uuid_command
*
6030 bfd_mach_o_lookup_uuid_command (bfd
*abfd
)
6032 bfd_mach_o_load_command
*uuid_cmd
= NULL
;
6033 int ncmd
= bfd_mach_o_lookup_command (abfd
, BFD_MACH_O_LC_UUID
, &uuid_cmd
);
6034 if (ncmd
!= 1 || uuid_cmd
== NULL
)
6036 return &uuid_cmd
->command
.uuid
;
6039 /* Return true if ABFD is a dSYM file and its UUID matches UUID_CMD. */
6042 bfd_mach_o_dsym_for_uuid_p (bfd
*abfd
, const bfd_mach_o_uuid_command
*uuid_cmd
)
6044 bfd_mach_o_uuid_command
*dsym_uuid_cmd
;
6047 BFD_ASSERT (uuid_cmd
);
6049 if (!bfd_check_format (abfd
, bfd_object
))
6052 if (bfd_get_flavour (abfd
) != bfd_target_mach_o_flavour
6053 || bfd_mach_o_get_data (abfd
) == NULL
6054 || bfd_mach_o_get_data (abfd
)->header
.filetype
!= BFD_MACH_O_MH_DSYM
)
6057 dsym_uuid_cmd
= bfd_mach_o_lookup_uuid_command (abfd
);
6058 if (dsym_uuid_cmd
== NULL
)
6061 if (memcmp (uuid_cmd
->uuid
, dsym_uuid_cmd
->uuid
,
6062 sizeof (uuid_cmd
->uuid
)) != 0)
6068 /* Find a BFD in DSYM_FILENAME which matches ARCH and UUID_CMD.
6069 The caller is responsible for closing the returned BFD object and
6070 its my_archive if the returned BFD is in a fat dSYM. */
6073 bfd_mach_o_find_dsym (const char *dsym_filename
,
6074 const bfd_mach_o_uuid_command
*uuid_cmd
,
6075 const bfd_arch_info_type
*arch
)
6077 bfd
*base_dsym_bfd
, *dsym_bfd
;
6079 BFD_ASSERT (uuid_cmd
);
6081 base_dsym_bfd
= bfd_openr (dsym_filename
, NULL
);
6082 if (base_dsym_bfd
== NULL
)
6085 dsym_bfd
= bfd_mach_o_fat_extract (base_dsym_bfd
, bfd_object
, arch
);
6086 if (bfd_mach_o_dsym_for_uuid_p (dsym_bfd
, uuid_cmd
))
6089 bfd_close (dsym_bfd
);
6090 if (base_dsym_bfd
!= dsym_bfd
)
6091 bfd_close (base_dsym_bfd
);
6096 /* Return a BFD created from a dSYM file for ABFD.
6097 The caller is responsible for closing the returned BFD object, its
6098 filename, and its my_archive if the returned BFD is in a fat dSYM. */
6101 bfd_mach_o_follow_dsym (bfd
*abfd
)
6103 char *dsym_filename
;
6104 bfd_mach_o_uuid_command
*uuid_cmd
;
6105 bfd
*dsym_bfd
, *base_bfd
= abfd
;
6106 const char *base_basename
;
6108 if (abfd
== NULL
|| bfd_get_flavour (abfd
) != bfd_target_mach_o_flavour
)
6111 if (abfd
->my_archive
&& !bfd_is_thin_archive (abfd
->my_archive
))
6112 base_bfd
= abfd
->my_archive
;
6113 /* BFD may have been opened from a stream. */
6114 if (bfd_get_filename (base_bfd
) == NULL
)
6116 bfd_set_error (bfd_error_invalid_operation
);
6119 base_basename
= lbasename (bfd_get_filename (base_bfd
));
6121 uuid_cmd
= bfd_mach_o_lookup_uuid_command (abfd
);
6122 if (uuid_cmd
== NULL
)
6125 /* TODO: We assume the DWARF file has the same as the binary's.
6126 It seems apple's GDB checks all files in the dSYM bundle directory.
6127 http://opensource.apple.com/source/gdb/gdb-1708/src/gdb/macosx/macosx-tdep.c
6129 dsym_filename
= (char *)bfd_malloc (strlen (bfd_get_filename (base_bfd
))
6130 + strlen (dsym_subdir
) + 1
6131 + strlen (base_basename
) + 1);
6132 if (dsym_filename
== NULL
)
6135 sprintf (dsym_filename
, "%s%s/%s",
6136 bfd_get_filename (base_bfd
), dsym_subdir
, base_basename
);
6138 dsym_bfd
= bfd_mach_o_find_dsym (dsym_filename
, uuid_cmd
,
6139 bfd_get_arch_info (abfd
));
6140 if (dsym_bfd
== NULL
)
6141 free (dsym_filename
);
6147 bfd_mach_o_find_nearest_line (bfd
*abfd
,
6151 const char **filename_ptr
,
6152 const char **functionname_ptr
,
6153 unsigned int *line_ptr
,
6154 unsigned int *discriminator_ptr
)
6156 bfd_mach_o_data_struct
*mdata
= bfd_mach_o_get_data (abfd
);
6159 switch (mdata
->header
.filetype
)
6161 case BFD_MACH_O_MH_OBJECT
:
6163 case BFD_MACH_O_MH_EXECUTE
:
6164 case BFD_MACH_O_MH_DYLIB
:
6165 case BFD_MACH_O_MH_BUNDLE
:
6166 case BFD_MACH_O_MH_KEXT_BUNDLE
:
6167 if (mdata
->dwarf2_find_line_info
== NULL
)
6169 mdata
->dsym_bfd
= bfd_mach_o_follow_dsym (abfd
);
6170 /* When we couldn't find dSYM for this binary, we look for
6171 the debug information in the binary itself. In this way,
6172 we won't try finding separated dSYM again because
6173 mdata->dwarf2_find_line_info will be filled. */
6174 if (! mdata
->dsym_bfd
)
6176 if (! _bfd_dwarf2_slurp_debug_info (abfd
, mdata
->dsym_bfd
,
6177 dwarf_debug_sections
, symbols
,
6178 &mdata
->dwarf2_find_line_info
,
6186 return _bfd_dwarf2_find_nearest_line (abfd
, symbols
, NULL
, section
, offset
,
6187 filename_ptr
, functionname_ptr
,
6188 line_ptr
, discriminator_ptr
,
6189 dwarf_debug_sections
,
6190 &mdata
->dwarf2_find_line_info
);
6194 bfd_mach_o_close_and_cleanup (bfd
*abfd
)
6196 bfd_mach_o_data_struct
*mdata
= bfd_mach_o_get_data (abfd
);
6197 if (bfd_get_format (abfd
) == bfd_object
&& mdata
!= NULL
)
6199 _bfd_dwarf2_cleanup_debug_info (abfd
, &mdata
->dwarf2_find_line_info
);
6200 bfd_mach_o_free_cached_info (abfd
);
6201 if (mdata
->dsym_bfd
!= NULL
)
6203 bfd
*fat_bfd
= mdata
->dsym_bfd
->my_archive
;
6205 /* FIXME: PR 19435: This calculation to find the memory allocated by
6206 bfd_mach_o_follow_dsym for the filename does not always end up
6207 selecting the correct pointer. Unfortunately this problem is
6208 very hard to reproduce on a non Mach-O native system, so until it
6209 can be traced and fixed on such a system, this code will remain
6210 commented out. This does mean that there will be a memory leak,
6211 but it is small, and happens when we are closing down, so it
6212 should not matter too much. */
6213 char *dsym_filename
= (char *)(fat_bfd
6214 ? bfd_get_filename (fat_bfd
)
6215 : bfd_get_filename (mdata
->dsym_bfd
));
6217 bfd_close (mdata
->dsym_bfd
);
6218 mdata
->dsym_bfd
= NULL
;
6220 bfd_close (fat_bfd
);
6222 free (dsym_filename
);
6227 return _bfd_generic_close_and_cleanup (abfd
);
6231 bfd_mach_o_free_cached_info (bfd
*abfd
)
6233 bfd_mach_o_data_struct
*mdata
= bfd_mach_o_get_data (abfd
);
6235 free (mdata
->dyn_reloc_cache
);
6236 mdata
->dyn_reloc_cache
= NULL
;
6237 for (asect
= abfd
->sections
; asect
!= NULL
; asect
= asect
->next
)
6239 free (asect
->relocation
);
6240 asect
->relocation
= NULL
;
6246 #define bfd_mach_o_bfd_reloc_type_lookup _bfd_norelocs_bfd_reloc_type_lookup
6247 #define bfd_mach_o_bfd_reloc_name_lookup _bfd_norelocs_bfd_reloc_name_lookup
6249 #define bfd_mach_o_canonicalize_one_reloc NULL
6250 #define bfd_mach_o_swap_reloc_out NULL
6251 #define bfd_mach_o_print_thread NULL
6252 #define bfd_mach_o_tgt_seg_table NULL
6253 #define bfd_mach_o_section_type_valid_for_tgt NULL
6255 #define TARGET_NAME mach_o_be_vec
6256 #define TARGET_STRING "mach-o-be"
6257 #define TARGET_ARCHITECTURE bfd_arch_unknown
6258 #define TARGET_PAGESIZE 1
6259 #define TARGET_BIG_ENDIAN 1
6260 #define TARGET_ARCHIVE 0
6261 #define TARGET_PRIORITY 1
6262 #include "mach-o-target.c"
6265 #undef TARGET_STRING
6266 #undef TARGET_ARCHITECTURE
6267 #undef TARGET_PAGESIZE
6268 #undef TARGET_BIG_ENDIAN
6269 #undef TARGET_ARCHIVE
6270 #undef TARGET_PRIORITY
6272 #define TARGET_NAME mach_o_le_vec
6273 #define TARGET_STRING "mach-o-le"
6274 #define TARGET_ARCHITECTURE bfd_arch_unknown
6275 #define TARGET_PAGESIZE 1
6276 #define TARGET_BIG_ENDIAN 0
6277 #define TARGET_ARCHIVE 0
6278 #define TARGET_PRIORITY 1
6280 #include "mach-o-target.c"
6283 #undef TARGET_STRING
6284 #undef TARGET_ARCHITECTURE
6285 #undef TARGET_PAGESIZE
6286 #undef TARGET_BIG_ENDIAN
6287 #undef TARGET_ARCHIVE
6288 #undef TARGET_PRIORITY
6290 /* Not yet handled: creating an archive. */
6291 #define bfd_mach_o_mkarchive _bfd_noarchive_mkarchive
6293 #define bfd_mach_o_close_and_cleanup bfd_mach_o_fat_close_and_cleanup
6296 #define bfd_mach_o_generic_stat_arch_elt bfd_mach_o_fat_stat_arch_elt
6297 #define bfd_mach_o_openr_next_archived_file bfd_mach_o_fat_openr_next_archived_file
6298 #define bfd_mach_o_archive_p bfd_mach_o_fat_archive_p
6300 #define TARGET_NAME mach_o_fat_vec
6301 #define TARGET_STRING "mach-o-fat"
6302 #define TARGET_ARCHITECTURE bfd_arch_unknown
6303 #define TARGET_PAGESIZE 1
6304 #define TARGET_BIG_ENDIAN 1
6305 #define TARGET_ARCHIVE 1
6306 #define TARGET_PRIORITY 0
6308 #include "mach-o-target.c"
6311 #undef TARGET_STRING
6312 #undef TARGET_ARCHITECTURE
6313 #undef TARGET_PAGESIZE
6314 #undef TARGET_BIG_ENDIAN
6315 #undef TARGET_ARCHIVE
6316 #undef TARGET_PRIORITY