1 /* Mach-O support for BFD.
2 Copyright (C) 1999-2015 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"
26 #include "aout/stab_gnu.h"
27 #include "mach-o/reloc.h"
28 #include "mach-o/external.h"
33 #define bfd_mach_o_object_p bfd_mach_o_gen_object_p
34 #define bfd_mach_o_core_p bfd_mach_o_gen_core_p
35 #define bfd_mach_o_mkobject bfd_mach_o_gen_mkobject
37 #define FILE_ALIGN(off, algn) \
38 (((off) + ((file_ptr) 1 << (algn)) - 1) & ((file_ptr) -1U << (algn)))
41 bfd_mach_o_read_dyld_content (bfd
*abfd
, bfd_mach_o_dyld_info_command
*cmd
);
44 bfd_mach_o_version (bfd
*abfd
)
46 bfd_mach_o_data_struct
*mdata
= NULL
;
48 BFD_ASSERT (bfd_mach_o_valid (abfd
));
49 mdata
= bfd_mach_o_get_data (abfd
);
51 return mdata
->header
.version
;
55 bfd_mach_o_valid (bfd
*abfd
)
57 if (abfd
== NULL
|| abfd
->xvec
== NULL
)
60 if (abfd
->xvec
->flavour
!= bfd_target_mach_o_flavour
)
63 if (bfd_mach_o_get_data (abfd
) == NULL
)
68 static INLINE bfd_boolean
69 mach_o_wide_p (bfd_mach_o_header
*header
)
71 switch (header
->version
)
83 static INLINE bfd_boolean
84 bfd_mach_o_wide_p (bfd
*abfd
)
86 return mach_o_wide_p (&bfd_mach_o_get_data (abfd
)->header
);
89 /* Tables to translate well known Mach-O segment/section names to bfd
90 names. Use of canonical names (such as .text or .debug_frame) is required
94 static const mach_o_section_name_xlat text_section_names_xlat
[] =
97 SEC_CODE
| SEC_LOAD
, BFD_MACH_O_S_REGULAR
,
98 BFD_MACH_O_S_ATTR_PURE_INSTRUCTIONS
, 0},
99 { ".const", "__const",
100 SEC_READONLY
| SEC_DATA
| SEC_LOAD
, BFD_MACH_O_S_REGULAR
,
101 BFD_MACH_O_S_ATTR_NONE
, 0},
102 { ".static_const", "__static_const",
103 SEC_READONLY
| SEC_DATA
| SEC_LOAD
, BFD_MACH_O_S_REGULAR
,
104 BFD_MACH_O_S_ATTR_NONE
, 0},
105 { ".cstring", "__cstring",
106 SEC_READONLY
| SEC_DATA
| SEC_LOAD
| SEC_MERGE
| SEC_STRINGS
,
107 BFD_MACH_O_S_CSTRING_LITERALS
,
108 BFD_MACH_O_S_ATTR_NONE
, 0},
109 { ".literal4", "__literal4",
110 SEC_READONLY
| SEC_DATA
| SEC_LOAD
, BFD_MACH_O_S_4BYTE_LITERALS
,
111 BFD_MACH_O_S_ATTR_NONE
, 2},
112 { ".literal8", "__literal8",
113 SEC_READONLY
| SEC_DATA
| SEC_LOAD
, BFD_MACH_O_S_8BYTE_LITERALS
,
114 BFD_MACH_O_S_ATTR_NONE
, 3},
115 { ".literal16", "__literal16",
116 SEC_READONLY
| SEC_DATA
| SEC_LOAD
, BFD_MACH_O_S_16BYTE_LITERALS
,
117 BFD_MACH_O_S_ATTR_NONE
, 4},
118 { ".constructor", "__constructor",
119 SEC_CODE
| SEC_LOAD
, BFD_MACH_O_S_REGULAR
,
120 BFD_MACH_O_S_ATTR_NONE
, 0},
121 { ".destructor", "__destructor",
122 SEC_CODE
| SEC_LOAD
, BFD_MACH_O_S_REGULAR
,
123 BFD_MACH_O_S_ATTR_NONE
, 0},
124 { ".eh_frame", "__eh_frame",
125 SEC_READONLY
| SEC_DATA
| SEC_LOAD
, BFD_MACH_O_S_COALESCED
,
126 BFD_MACH_O_S_ATTR_LIVE_SUPPORT
127 | BFD_MACH_O_S_ATTR_STRIP_STATIC_SYMS
128 | BFD_MACH_O_S_ATTR_NO_TOC
, 2},
129 { NULL
, NULL
, 0, 0, 0, 0}
132 /* __DATA Segment. */
133 static const mach_o_section_name_xlat data_section_names_xlat
[] =
136 SEC_DATA
| SEC_LOAD
, BFD_MACH_O_S_REGULAR
,
137 BFD_MACH_O_S_ATTR_NONE
, 0},
139 SEC_NO_FLAGS
, BFD_MACH_O_S_ZEROFILL
,
140 BFD_MACH_O_S_ATTR_NONE
, 0},
141 { ".const_data", "__const",
142 SEC_DATA
| SEC_LOAD
, BFD_MACH_O_S_REGULAR
,
143 BFD_MACH_O_S_ATTR_NONE
, 0},
144 { ".static_data", "__static_data",
145 SEC_DATA
| SEC_LOAD
, BFD_MACH_O_S_REGULAR
,
146 BFD_MACH_O_S_ATTR_NONE
, 0},
147 { ".mod_init_func", "__mod_init_func",
148 SEC_DATA
| SEC_LOAD
, BFD_MACH_O_S_MOD_INIT_FUNC_POINTERS
,
149 BFD_MACH_O_S_ATTR_NONE
, 2},
150 { ".mod_term_func", "__mod_term_func",
151 SEC_DATA
| SEC_LOAD
, BFD_MACH_O_S_MOD_FINI_FUNC_POINTERS
,
152 BFD_MACH_O_S_ATTR_NONE
, 2},
154 SEC_DATA
| SEC_LOAD
, BFD_MACH_O_S_REGULAR
,
155 BFD_MACH_O_S_ATTR_NONE
, 0},
156 { ".cfstring", "__cfstring",
157 SEC_DATA
| SEC_LOAD
, BFD_MACH_O_S_REGULAR
,
158 BFD_MACH_O_S_ATTR_NONE
, 2},
159 { NULL
, NULL
, 0, 0, 0, 0}
162 /* __DWARF Segment. */
163 static const mach_o_section_name_xlat dwarf_section_names_xlat
[] =
165 { ".debug_frame", "__debug_frame",
166 SEC_DEBUGGING
, BFD_MACH_O_S_REGULAR
,
167 BFD_MACH_O_S_ATTR_DEBUG
, 0},
168 { ".debug_info", "__debug_info",
169 SEC_DEBUGGING
, BFD_MACH_O_S_REGULAR
,
170 BFD_MACH_O_S_ATTR_DEBUG
, 0},
171 { ".debug_abbrev", "__debug_abbrev",
172 SEC_DEBUGGING
, BFD_MACH_O_S_REGULAR
,
173 BFD_MACH_O_S_ATTR_DEBUG
, 0},
174 { ".debug_aranges", "__debug_aranges",
175 SEC_DEBUGGING
, BFD_MACH_O_S_REGULAR
,
176 BFD_MACH_O_S_ATTR_DEBUG
, 0},
177 { ".debug_macinfo", "__debug_macinfo",
178 SEC_DEBUGGING
, BFD_MACH_O_S_REGULAR
,
179 BFD_MACH_O_S_ATTR_DEBUG
, 0},
180 { ".debug_line", "__debug_line",
181 SEC_DEBUGGING
, BFD_MACH_O_S_REGULAR
,
182 BFD_MACH_O_S_ATTR_DEBUG
, 0},
183 { ".debug_loc", "__debug_loc",
184 SEC_DEBUGGING
, BFD_MACH_O_S_REGULAR
,
185 BFD_MACH_O_S_ATTR_DEBUG
, 0},
186 { ".debug_pubnames", "__debug_pubnames",
187 SEC_DEBUGGING
, BFD_MACH_O_S_REGULAR
,
188 BFD_MACH_O_S_ATTR_DEBUG
, 0},
189 { ".debug_pubtypes", "__debug_pubtypes",
190 SEC_DEBUGGING
, BFD_MACH_O_S_REGULAR
,
191 BFD_MACH_O_S_ATTR_DEBUG
, 0},
192 { ".debug_str", "__debug_str",
193 SEC_DEBUGGING
, BFD_MACH_O_S_REGULAR
,
194 BFD_MACH_O_S_ATTR_DEBUG
, 0},
195 { ".debug_ranges", "__debug_ranges",
196 SEC_DEBUGGING
, BFD_MACH_O_S_REGULAR
,
197 BFD_MACH_O_S_ATTR_DEBUG
, 0},
198 { ".debug_macro", "__debug_macro",
199 SEC_DEBUGGING
, BFD_MACH_O_S_REGULAR
,
200 BFD_MACH_O_S_ATTR_DEBUG
, 0},
201 { ".debug_gdb_scripts", "__debug_gdb_scri",
202 SEC_DEBUGGING
, BFD_MACH_O_S_REGULAR
,
203 BFD_MACH_O_S_ATTR_DEBUG
, 0},
204 { NULL
, NULL
, 0, 0, 0, 0}
207 /* __OBJC Segment. */
208 static const mach_o_section_name_xlat objc_section_names_xlat
[] =
210 { ".objc_class", "__class",
211 SEC_DATA
| SEC_LOAD
, BFD_MACH_O_S_REGULAR
,
212 BFD_MACH_O_S_ATTR_NO_DEAD_STRIP
, 0},
213 { ".objc_meta_class", "__meta_class",
214 SEC_DATA
| SEC_LOAD
, BFD_MACH_O_S_REGULAR
,
215 BFD_MACH_O_S_ATTR_NO_DEAD_STRIP
, 0},
216 { ".objc_cat_cls_meth", "__cat_cls_meth",
217 SEC_DATA
| SEC_LOAD
, BFD_MACH_O_S_REGULAR
,
218 BFD_MACH_O_S_ATTR_NO_DEAD_STRIP
, 0},
219 { ".objc_cat_inst_meth", "__cat_inst_meth",
220 SEC_DATA
| SEC_LOAD
, BFD_MACH_O_S_REGULAR
,
221 BFD_MACH_O_S_ATTR_NO_DEAD_STRIP
, 0},
222 { ".objc_protocol", "__protocol",
223 SEC_DATA
| SEC_LOAD
, BFD_MACH_O_S_REGULAR
,
224 BFD_MACH_O_S_ATTR_NO_DEAD_STRIP
, 0},
225 { ".objc_string_object", "__string_object",
226 SEC_DATA
| SEC_LOAD
, BFD_MACH_O_S_REGULAR
,
227 BFD_MACH_O_S_ATTR_NO_DEAD_STRIP
, 0},
228 { ".objc_cls_meth", "__cls_meth",
229 SEC_DATA
| SEC_LOAD
, BFD_MACH_O_S_REGULAR
,
230 BFD_MACH_O_S_ATTR_NO_DEAD_STRIP
, 0},
231 { ".objc_inst_meth", "__inst_meth",
232 SEC_DATA
| SEC_LOAD
, BFD_MACH_O_S_REGULAR
,
233 BFD_MACH_O_S_ATTR_NO_DEAD_STRIP
, 0},
234 { ".objc_cls_refs", "__cls_refs",
235 SEC_DATA
| SEC_LOAD
, BFD_MACH_O_S_LITERAL_POINTERS
,
236 BFD_MACH_O_S_ATTR_NO_DEAD_STRIP
, 0},
237 { ".objc_message_refs", "__message_refs",
238 SEC_DATA
| SEC_LOAD
, BFD_MACH_O_S_LITERAL_POINTERS
,
239 BFD_MACH_O_S_ATTR_NO_DEAD_STRIP
, 0},
240 { ".objc_symbols", "__symbols",
241 SEC_DATA
| SEC_LOAD
, BFD_MACH_O_S_REGULAR
,
242 BFD_MACH_O_S_ATTR_NO_DEAD_STRIP
, 0},
243 { ".objc_category", "__category",
244 SEC_DATA
| SEC_LOAD
, BFD_MACH_O_S_REGULAR
,
245 BFD_MACH_O_S_ATTR_NO_DEAD_STRIP
, 0},
246 { ".objc_class_vars", "__class_vars",
247 SEC_DATA
| SEC_LOAD
, BFD_MACH_O_S_REGULAR
,
248 BFD_MACH_O_S_ATTR_NO_DEAD_STRIP
, 0},
249 { ".objc_instance_vars", "__instance_vars",
250 SEC_DATA
| SEC_LOAD
, BFD_MACH_O_S_REGULAR
,
251 BFD_MACH_O_S_ATTR_NO_DEAD_STRIP
, 0},
252 { ".objc_module_info", "__module_info",
253 SEC_DATA
| SEC_LOAD
, BFD_MACH_O_S_REGULAR
,
254 BFD_MACH_O_S_ATTR_NO_DEAD_STRIP
, 0},
255 { ".objc_selector_strs", "__selector_strs",
256 SEC_DATA
| SEC_LOAD
, BFD_MACH_O_S_CSTRING_LITERALS
,
257 BFD_MACH_O_S_ATTR_NO_DEAD_STRIP
, 0},
258 { ".objc_image_info", "__image_info",
259 SEC_DATA
| SEC_LOAD
, BFD_MACH_O_S_REGULAR
,
260 BFD_MACH_O_S_ATTR_NO_DEAD_STRIP
, 0},
261 { ".objc_selector_fixup", "__sel_fixup",
262 SEC_DATA
| SEC_LOAD
, BFD_MACH_O_S_REGULAR
,
263 BFD_MACH_O_S_ATTR_NO_DEAD_STRIP
, 0},
265 { ".objc1_class_ext", "__class_ext",
266 SEC_DATA
| SEC_LOAD
, BFD_MACH_O_S_REGULAR
,
267 BFD_MACH_O_S_ATTR_NO_DEAD_STRIP
, 0},
268 { ".objc1_property_list", "__property",
269 SEC_DATA
| SEC_LOAD
, BFD_MACH_O_S_REGULAR
,
270 BFD_MACH_O_S_ATTR_NO_DEAD_STRIP
, 0},
271 { ".objc1_protocol_ext", "__protocol_ext",
272 SEC_DATA
| SEC_LOAD
, BFD_MACH_O_S_REGULAR
,
273 BFD_MACH_O_S_ATTR_NO_DEAD_STRIP
, 0},
274 { NULL
, NULL
, 0, 0, 0, 0}
277 static const mach_o_segment_name_xlat segsec_names_xlat
[] =
279 { "__TEXT", text_section_names_xlat
},
280 { "__DATA", data_section_names_xlat
},
281 { "__DWARF", dwarf_section_names_xlat
},
282 { "__OBJC", objc_section_names_xlat
},
286 static const char dsym_subdir
[] = ".dSYM/Contents/Resources/DWARF";
288 /* For both cases bfd-name => mach-o name and vice versa, the specific target
289 is checked before the generic. This allows a target (e.g. ppc for cstring)
290 to override the generic definition with a more specific one. */
292 /* Fetch the translation from a Mach-O section designation (segment, section)
293 as a bfd short name, if one exists. Otherwise return NULL.
295 Allow the segment and section names to be unterminated 16 byte arrays. */
297 const mach_o_section_name_xlat
*
298 bfd_mach_o_section_data_for_mach_sect (bfd
*abfd
, const char *segname
,
299 const char *sectname
)
301 const struct mach_o_segment_name_xlat
*seg
;
302 const mach_o_section_name_xlat
*sec
;
303 bfd_mach_o_backend_data
*bed
= bfd_mach_o_get_backend_data (abfd
);
305 /* First try any target-specific translations defined... */
306 if (bed
->segsec_names_xlat
)
307 for (seg
= bed
->segsec_names_xlat
; seg
->segname
; seg
++)
308 if (strncmp (seg
->segname
, segname
, BFD_MACH_O_SEGNAME_SIZE
) == 0)
309 for (sec
= seg
->sections
; sec
->mach_o_name
; sec
++)
310 if (strncmp (sec
->mach_o_name
, sectname
,
311 BFD_MACH_O_SECTNAME_SIZE
) == 0)
314 /* ... and then the Mach-O generic ones. */
315 for (seg
= segsec_names_xlat
; seg
->segname
; seg
++)
316 if (strncmp (seg
->segname
, segname
, BFD_MACH_O_SEGNAME_SIZE
) == 0)
317 for (sec
= seg
->sections
; sec
->mach_o_name
; sec
++)
318 if (strncmp (sec
->mach_o_name
, sectname
,
319 BFD_MACH_O_SECTNAME_SIZE
) == 0)
325 /* If the bfd_name for this section is a 'canonical' form for which we
326 know the Mach-O data, return the segment name and the data for the
327 Mach-O equivalent. Otherwise return NULL. */
329 const mach_o_section_name_xlat
*
330 bfd_mach_o_section_data_for_bfd_name (bfd
*abfd
, const char *bfd_name
,
331 const char **segname
)
333 const struct mach_o_segment_name_xlat
*seg
;
334 const mach_o_section_name_xlat
*sec
;
335 bfd_mach_o_backend_data
*bed
= bfd_mach_o_get_backend_data (abfd
);
338 if (bfd_name
[0] != '.')
341 /* First try any target-specific translations defined... */
342 if (bed
->segsec_names_xlat
)
343 for (seg
= bed
->segsec_names_xlat
; seg
->segname
; seg
++)
344 for (sec
= seg
->sections
; sec
->bfd_name
; sec
++)
345 if (strcmp (bfd_name
, sec
->bfd_name
) == 0)
347 *segname
= seg
->segname
;
351 /* ... and then the Mach-O generic ones. */
352 for (seg
= segsec_names_xlat
; seg
->segname
; seg
++)
353 for (sec
= seg
->sections
; sec
->bfd_name
; sec
++)
354 if (strcmp (bfd_name
, sec
->bfd_name
) == 0)
356 *segname
= seg
->segname
;
363 /* Convert Mach-O section name to BFD.
365 Try to use standard/canonical names, for which we have tables including
366 default flag settings - which are returned. Otherwise forge a new name
367 in the form "<segmentname>.<sectionname>" this will be prefixed with
368 LC_SEGMENT. if the segment name does not begin with an underscore.
370 SEGNAME and SECTNAME are 16 byte arrays (they do not need to be NUL-
371 terminated if the name length is exactly 16 bytes - but must be if the name
372 length is less than 16 characters). */
375 bfd_mach_o_convert_section_name_to_bfd (bfd
*abfd
, const char *segname
,
376 const char *secname
, const char **name
,
379 const mach_o_section_name_xlat
*xlat
;
382 const char *pfx
= "";
385 *flags
= SEC_NO_FLAGS
;
387 /* First search for a canonical name...
388 xlat will be non-null if there is an entry for segname, secname. */
389 xlat
= bfd_mach_o_section_data_for_mach_sect (abfd
, segname
, secname
);
392 len
= strlen (xlat
->bfd_name
);
393 res
= bfd_alloc (abfd
, len
+ 1);
396 memcpy (res
, xlat
->bfd_name
, len
+1);
398 *flags
= xlat
->bfd_flags
;
402 /* ... else we make up a bfd name from the segment concatenated with the
405 len
= 16 + 1 + 16 + 1;
407 /* Put "LC_SEGMENT." prefix if the segment name is weird (ie doesn't start
408 with an underscore. */
409 if (segname
[0] != '_')
411 static const char seg_pfx
[] = "LC_SEGMENT.";
414 len
+= sizeof (seg_pfx
) - 1;
417 res
= bfd_alloc (abfd
, len
);
420 snprintf (res
, len
, "%s%.16s.%.16s", pfx
, segname
, secname
);
424 /* Convert a bfd section name to a Mach-O segment + section name.
426 If the name is a canonical one for which we have a Darwin match
427 return the translation table - which contains defaults for flags,
428 type, attribute and default alignment data.
430 Otherwise, expand the bfd_name (assumed to be in the form
431 "[LC_SEGMENT.]<segmentname>.<sectionname>") and return NULL. */
433 static const mach_o_section_name_xlat
*
434 bfd_mach_o_convert_section_name_to_mach_o (bfd
*abfd ATTRIBUTE_UNUSED
,
436 bfd_mach_o_section
*section
)
438 const mach_o_section_name_xlat
*xlat
;
439 const char *name
= bfd_get_section_name (abfd
, sect
);
446 memset (section
->segname
, 0, BFD_MACH_O_SEGNAME_SIZE
+ 1);
447 memset (section
->sectname
, 0, BFD_MACH_O_SECTNAME_SIZE
+ 1);
449 /* See if is a canonical name ... */
450 xlat
= bfd_mach_o_section_data_for_bfd_name (abfd
, name
, &segname
);
453 strcpy (section
->segname
, segname
);
454 strcpy (section
->sectname
, xlat
->mach_o_name
);
458 /* .. else we convert our constructed one back to Mach-O.
459 Strip LC_SEGMENT. prefix, if present. */
460 if (strncmp (name
, "LC_SEGMENT.", 11) == 0)
464 dot
= strchr (name
, '.');
467 /* Try to split name into segment and section names. */
468 if (dot
&& dot
!= name
)
471 seclen
= len
- (dot
+ 1 - name
);
473 if (seglen
<= BFD_MACH_O_SEGNAME_SIZE
474 && seclen
<= BFD_MACH_O_SECTNAME_SIZE
)
476 memcpy (section
->segname
, name
, seglen
);
477 section
->segname
[seglen
] = 0;
478 memcpy (section
->sectname
, dot
+ 1, seclen
);
479 section
->sectname
[seclen
] = 0;
484 /* The segment and section names are both missing - don't make them
486 if (dot
&& dot
== name
)
489 /* Just duplicate the name into both segment and section. */
492 memcpy (section
->segname
, name
, len
);
493 section
->segname
[len
] = 0;
494 memcpy (section
->sectname
, name
, len
);
495 section
->sectname
[len
] = 0;
499 /* Return the size of an entry for section SEC.
500 Must be called only for symbol pointer section and symbol stubs
504 bfd_mach_o_section_get_entry_size (bfd
*abfd
, bfd_mach_o_section
*sec
)
506 switch (sec
->flags
& BFD_MACH_O_SECTION_TYPE_MASK
)
508 case BFD_MACH_O_S_NON_LAZY_SYMBOL_POINTERS
:
509 case BFD_MACH_O_S_LAZY_SYMBOL_POINTERS
:
510 return bfd_mach_o_wide_p (abfd
) ? 8 : 4;
511 case BFD_MACH_O_S_SYMBOL_STUBS
:
512 return sec
->reserved2
;
519 /* Return the number of indirect symbols for a section.
520 Must be called only for symbol pointer section and symbol stubs
524 bfd_mach_o_section_get_nbr_indirect (bfd
*abfd
, bfd_mach_o_section
*sec
)
528 elsz
= bfd_mach_o_section_get_entry_size (abfd
, sec
);
532 return sec
->size
/ elsz
;
535 /* Append command CMD to ABFD. Note that header.ncmds is not updated. */
538 bfd_mach_o_append_command (bfd
*abfd
, bfd_mach_o_load_command
*cmd
)
540 bfd_mach_o_data_struct
*mdata
= bfd_mach_o_get_data (abfd
);
542 if (mdata
->last_command
!= NULL
)
543 mdata
->last_command
->next
= cmd
;
545 mdata
->first_command
= cmd
;
546 mdata
->last_command
= cmd
;
550 /* Copy any private info we understand from the input symbol
551 to the output symbol. */
554 bfd_mach_o_bfd_copy_private_symbol_data (bfd
*ibfd ATTRIBUTE_UNUSED
,
556 bfd
*obfd ATTRIBUTE_UNUSED
,
559 bfd_mach_o_asymbol
*os
, *is
;
561 os
= (bfd_mach_o_asymbol
*)osymbol
;
562 is
= (bfd_mach_o_asymbol
*)isymbol
;
563 os
->n_type
= is
->n_type
;
564 os
->n_sect
= is
->n_sect
;
565 os
->n_desc
= is
->n_desc
;
566 os
->symbol
.udata
.i
= is
->symbol
.udata
.i
;
571 /* Copy any private info we understand from the input section
572 to the output section. */
575 bfd_mach_o_bfd_copy_private_section_data (bfd
*ibfd
, asection
*isection
,
576 bfd
*obfd
, asection
*osection
)
578 bfd_mach_o_section
*os
= bfd_mach_o_get_mach_o_section (osection
);
579 bfd_mach_o_section
*is
= bfd_mach_o_get_mach_o_section (isection
);
581 if (ibfd
->xvec
->flavour
!= bfd_target_mach_o_flavour
582 || obfd
->xvec
->flavour
!= bfd_target_mach_o_flavour
)
585 BFD_ASSERT (is
!= NULL
&& os
!= NULL
);
587 os
->flags
= is
->flags
;
588 os
->reserved1
= is
->reserved1
;
589 os
->reserved2
= is
->reserved2
;
590 os
->reserved3
= is
->reserved3
;
595 /* Copy any private info we understand from the input bfd
596 to the output bfd. */
599 bfd_mach_o_bfd_copy_private_header_data (bfd
*ibfd
, bfd
*obfd
)
601 bfd_mach_o_data_struct
*imdata
;
602 bfd_mach_o_data_struct
*omdata
;
603 bfd_mach_o_load_command
*icmd
;
605 if (bfd_get_flavour (ibfd
) != bfd_target_mach_o_flavour
606 || bfd_get_flavour (obfd
) != bfd_target_mach_o_flavour
)
609 BFD_ASSERT (bfd_mach_o_valid (ibfd
));
610 BFD_ASSERT (bfd_mach_o_valid (obfd
));
612 imdata
= bfd_mach_o_get_data (ibfd
);
613 omdata
= bfd_mach_o_get_data (obfd
);
615 /* Copy header flags. */
616 omdata
->header
.flags
= imdata
->header
.flags
;
619 for (icmd
= imdata
->first_command
; icmd
!= NULL
; icmd
= icmd
->next
)
621 bfd_mach_o_load_command
*ocmd
;
625 case BFD_MACH_O_LC_LOAD_DYLIB
:
626 case BFD_MACH_O_LC_LOAD_DYLINKER
:
627 case BFD_MACH_O_LC_DYLD_INFO
:
628 /* Command is copied. */
629 ocmd
= bfd_alloc (obfd
, sizeof (bfd_mach_o_load_command
));
633 /* Copy common fields. */
634 ocmd
->type
= icmd
->type
;
635 ocmd
->type_required
= icmd
->type_required
;
637 ocmd
->len
= icmd
->len
;
641 /* Command is not copied. */
648 case BFD_MACH_O_LC_LOAD_DYLIB
:
650 bfd_mach_o_dylib_command
*idy
= &icmd
->command
.dylib
;
651 bfd_mach_o_dylib_command
*ody
= &ocmd
->command
.dylib
;
653 ody
->name_offset
= idy
->name_offset
;
654 ody
->timestamp
= idy
->timestamp
;
655 ody
->current_version
= idy
->current_version
;
656 ody
->compatibility_version
= idy
->compatibility_version
;
657 ody
->name_str
= idy
->name_str
;
661 case BFD_MACH_O_LC_LOAD_DYLINKER
:
663 bfd_mach_o_dylinker_command
*idy
= &icmd
->command
.dylinker
;
664 bfd_mach_o_dylinker_command
*ody
= &ocmd
->command
.dylinker
;
666 ody
->name_offset
= idy
->name_offset
;
667 ody
->name_str
= idy
->name_str
;
671 case BFD_MACH_O_LC_DYLD_INFO
:
673 bfd_mach_o_dyld_info_command
*idy
= &icmd
->command
.dyld_info
;
674 bfd_mach_o_dyld_info_command
*ody
= &ocmd
->command
.dyld_info
;
676 if (bfd_mach_o_read_dyld_content (ibfd
, idy
))
678 ody
->rebase_size
= idy
->rebase_size
;
679 ody
->rebase_content
= idy
->rebase_content
;
681 ody
->bind_size
= idy
->bind_size
;
682 ody
->bind_content
= idy
->bind_content
;
684 ody
->weak_bind_size
= idy
->weak_bind_size
;
685 ody
->weak_bind_content
= idy
->weak_bind_content
;
687 ody
->lazy_bind_size
= idy
->lazy_bind_size
;
688 ody
->lazy_bind_content
= idy
->lazy_bind_content
;
690 ody
->export_size
= idy
->export_size
;
691 ody
->export_content
= idy
->export_content
;
693 /* PR 17512L: file: 730e492d. */
698 ody
->weak_bind_size
=
699 ody
->lazy_bind_size
=
700 ody
->export_size
= 0;
701 ody
->rebase_content
=
703 ody
->weak_bind_content
=
704 ody
->lazy_bind_content
=
705 ody
->export_content
= NULL
;
711 /* That command should be handled. */
715 /* Insert command. */
716 bfd_mach_o_append_command (obfd
, ocmd
);
722 /* This allows us to set up to 32 bits of flags (unless we invent some
723 fiendish scheme to subdivide). For now, we'll just set the file flags
724 without error checking - just overwrite. */
727 bfd_mach_o_bfd_set_private_flags (bfd
*abfd
, flagword flags
)
729 bfd_mach_o_data_struct
*mdata
= bfd_mach_o_get_data (abfd
);
734 mdata
->header
.flags
= flags
;
738 /* Count the total number of symbols. */
741 bfd_mach_o_count_symbols (bfd
*abfd
)
743 bfd_mach_o_data_struct
*mdata
= bfd_mach_o_get_data (abfd
);
745 if (mdata
->symtab
== NULL
)
747 return mdata
->symtab
->nsyms
;
751 bfd_mach_o_get_symtab_upper_bound (bfd
*abfd
)
753 long nsyms
= bfd_mach_o_count_symbols (abfd
);
755 return ((nsyms
+ 1) * sizeof (asymbol
*));
759 bfd_mach_o_canonicalize_symtab (bfd
*abfd
, asymbol
**alocation
)
761 bfd_mach_o_data_struct
*mdata
= bfd_mach_o_get_data (abfd
);
762 long nsyms
= bfd_mach_o_count_symbols (abfd
);
763 bfd_mach_o_symtab_command
*sym
= mdata
->symtab
;
771 /* Do not try to read symbols if there are none. */
776 if (!bfd_mach_o_read_symtab_symbols (abfd
))
778 (*_bfd_error_handler
)
779 (_("bfd_mach_o_canonicalize_symtab: unable to load symbols"));
783 BFD_ASSERT (sym
->symbols
!= NULL
);
785 for (j
= 0; j
< sym
->nsyms
; j
++)
786 alocation
[j
] = &sym
->symbols
[j
].symbol
;
793 /* Create synthetic symbols for indirect symbols. */
796 bfd_mach_o_get_synthetic_symtab (bfd
*abfd
,
797 long symcount ATTRIBUTE_UNUSED
,
798 asymbol
**syms ATTRIBUTE_UNUSED
,
799 long dynsymcount ATTRIBUTE_UNUSED
,
800 asymbol
**dynsyms ATTRIBUTE_UNUSED
,
803 bfd_mach_o_data_struct
*mdata
= bfd_mach_o_get_data (abfd
);
804 bfd_mach_o_dysymtab_command
*dysymtab
= mdata
->dysymtab
;
805 bfd_mach_o_symtab_command
*symtab
= mdata
->symtab
;
809 unsigned long count
, i
, j
, n
;
813 const char stub
[] = "$stub";
817 /* Stop now if no symbols or no indirect symbols. */
818 if (dysymtab
== NULL
|| dysymtab
->nindirectsyms
== 0
819 || symtab
== NULL
|| symtab
->symbols
== NULL
)
822 /* We need to allocate a bfd symbol for every indirect symbol and to
823 allocate the memory for its name. */
824 count
= dysymtab
->nindirectsyms
;
825 size
= count
* sizeof (asymbol
) + 1;
827 for (j
= 0; j
< count
; j
++)
830 unsigned int isym
= dysymtab
->indirect_syms
[j
];
832 /* Some indirect symbols are anonymous. */
833 if (isym
< symtab
->nsyms
&& (strng
= symtab
->symbols
[isym
].symbol
.name
))
834 /* PR 17512: file: f5b8eeba. */
835 size
+= strnlen (strng
, symtab
->strsize
- (strng
- symtab
->strtab
)) + sizeof (stub
);
838 s_start
= bfd_malloc (size
);
839 s
= *ret
= (asymbol
*) s_start
;
842 names
= (char *) (s
+ count
);
845 s_end
= s_start
+ size
;
848 for (i
= 0; i
< mdata
->nsects
; i
++)
850 bfd_mach_o_section
*sec
= mdata
->sections
[i
];
851 unsigned int first
, last
;
855 switch (sec
->flags
& BFD_MACH_O_SECTION_TYPE_MASK
)
857 case BFD_MACH_O_S_NON_LAZY_SYMBOL_POINTERS
:
858 case BFD_MACH_O_S_LAZY_SYMBOL_POINTERS
:
859 case BFD_MACH_O_S_SYMBOL_STUBS
:
860 /* Only these sections have indirect symbols. */
861 first
= sec
->reserved1
;
862 last
= first
+ bfd_mach_o_section_get_nbr_indirect (abfd
, sec
);
864 entry_size
= bfd_mach_o_section_get_entry_size (abfd
, sec
);
866 /* PR 17512: file: 08e15eec. */
867 if (first
>= count
|| last
>= count
|| first
> last
)
870 for (j
= first
; j
< last
; j
++)
872 unsigned int isym
= dysymtab
->indirect_syms
[j
];
874 /* PR 17512: file: 04d64d9b. */
875 if (((char *) s
) + sizeof (* s
) > s_end
)
878 s
->flags
= BSF_GLOBAL
| BSF_SYNTHETIC
;
879 s
->section
= sec
->bfdsection
;
880 s
->value
= addr
- sec
->addr
;
883 if (isym
< symtab
->nsyms
884 && symtab
->symbols
[isym
].symbol
.name
)
886 const char *sym
= symtab
->symbols
[isym
].symbol
.name
;
891 /* PR 17512: file: 47dfd4d2. */
892 if (names
+ len
>= s_end
)
894 memcpy (names
, sym
, len
);
896 /* PR 17512: file: 18f340a4. */
897 if (names
+ sizeof (stub
) >= s_end
)
899 memcpy (names
, stub
, sizeof (stub
));
900 names
+= sizeof (stub
);
924 bfd_mach_o_get_symbol_info (bfd
*abfd ATTRIBUTE_UNUSED
,
928 bfd_symbol_info (symbol
, ret
);
932 bfd_mach_o_print_symbol (bfd
*abfd
,
935 bfd_print_symbol_type how
)
937 FILE *file
= (FILE *) afile
;
939 bfd_mach_o_asymbol
*asym
= (bfd_mach_o_asymbol
*)symbol
;
943 case bfd_print_symbol_name
:
944 fprintf (file
, "%s", symbol
->name
);
947 bfd_print_symbol_vandf (abfd
, (void *) file
, symbol
);
948 if (asym
->n_type
& BFD_MACH_O_N_STAB
)
949 name
= bfd_get_stab_name (asym
->n_type
);
951 switch (asym
->n_type
& BFD_MACH_O_N_TYPE
)
953 case BFD_MACH_O_N_UNDF
:
954 if (symbol
->value
== 0)
959 case BFD_MACH_O_N_ABS
:
962 case BFD_MACH_O_N_INDR
:
965 case BFD_MACH_O_N_PBUD
:
968 case BFD_MACH_O_N_SECT
:
977 fprintf (file
, " %02x %-6s %02x %04x",
978 asym
->n_type
, name
, asym
->n_sect
, asym
->n_desc
);
979 if ((asym
->n_type
& BFD_MACH_O_N_STAB
) == 0
980 && (asym
->n_type
& BFD_MACH_O_N_TYPE
) == BFD_MACH_O_N_SECT
)
981 fprintf (file
, " [%s]", symbol
->section
->name
);
982 fprintf (file
, " %s", symbol
->name
);
987 bfd_mach_o_convert_architecture (bfd_mach_o_cpu_type mtype
,
988 bfd_mach_o_cpu_subtype msubtype
,
989 enum bfd_architecture
*type
,
990 unsigned long *subtype
)
992 *subtype
= bfd_arch_unknown
;
996 case BFD_MACH_O_CPU_TYPE_VAX
:
997 *type
= bfd_arch_vax
;
999 case BFD_MACH_O_CPU_TYPE_MC680x0
:
1000 *type
= bfd_arch_m68k
;
1002 case BFD_MACH_O_CPU_TYPE_I386
:
1003 *type
= bfd_arch_i386
;
1004 *subtype
= bfd_mach_i386_i386
;
1006 case BFD_MACH_O_CPU_TYPE_X86_64
:
1007 *type
= bfd_arch_i386
;
1008 *subtype
= bfd_mach_x86_64
;
1010 case BFD_MACH_O_CPU_TYPE_MIPS
:
1011 *type
= bfd_arch_mips
;
1013 case BFD_MACH_O_CPU_TYPE_MC98000
:
1014 *type
= bfd_arch_m98k
;
1016 case BFD_MACH_O_CPU_TYPE_HPPA
:
1017 *type
= bfd_arch_hppa
;
1019 case BFD_MACH_O_CPU_TYPE_ARM
:
1020 *type
= bfd_arch_arm
;
1023 case BFD_MACH_O_CPU_SUBTYPE_ARM_V4T
:
1024 *subtype
= bfd_mach_arm_4T
;
1026 case BFD_MACH_O_CPU_SUBTYPE_ARM_V6
:
1027 *subtype
= bfd_mach_arm_4T
; /* Best fit ? */
1029 case BFD_MACH_O_CPU_SUBTYPE_ARM_V5TEJ
:
1030 *subtype
= bfd_mach_arm_5TE
;
1032 case BFD_MACH_O_CPU_SUBTYPE_ARM_XSCALE
:
1033 *subtype
= bfd_mach_arm_XScale
;
1035 case BFD_MACH_O_CPU_SUBTYPE_ARM_V7
:
1036 *subtype
= bfd_mach_arm_5TE
; /* Best fit ? */
1038 case BFD_MACH_O_CPU_SUBTYPE_ARM_ALL
:
1043 case BFD_MACH_O_CPU_TYPE_MC88000
:
1044 *type
= bfd_arch_m88k
;
1046 case BFD_MACH_O_CPU_TYPE_SPARC
:
1047 *type
= bfd_arch_sparc
;
1048 *subtype
= bfd_mach_sparc
;
1050 case BFD_MACH_O_CPU_TYPE_I860
:
1051 *type
= bfd_arch_i860
;
1053 case BFD_MACH_O_CPU_TYPE_ALPHA
:
1054 *type
= bfd_arch_alpha
;
1056 case BFD_MACH_O_CPU_TYPE_POWERPC
:
1057 *type
= bfd_arch_powerpc
;
1058 *subtype
= bfd_mach_ppc
;
1060 case BFD_MACH_O_CPU_TYPE_POWERPC_64
:
1061 *type
= bfd_arch_powerpc
;
1062 *subtype
= bfd_mach_ppc64
;
1064 case BFD_MACH_O_CPU_TYPE_ARM64
:
1065 *type
= bfd_arch_aarch64
;
1066 *subtype
= bfd_mach_aarch64
;
1069 *type
= bfd_arch_unknown
;
1074 /* Write n NUL bytes to ABFD so that LEN + n is a multiple of 4. Return the
1075 number of bytes written or -1 in case of error. */
1078 bfd_mach_o_pad4 (bfd
*abfd
, unsigned int len
)
1082 char pad
[4] = {0,0,0,0};
1083 unsigned int padlen
= 4 - (len
% 4);
1085 if (bfd_bwrite (pad
, padlen
, abfd
) != padlen
)
1094 /* Likewise, but for a command. */
1097 bfd_mach_o_pad_command (bfd
*abfd
, unsigned int len
)
1099 unsigned int align
= bfd_mach_o_wide_p (abfd
) ? 8 : 4;
1101 if (len
% align
!= 0)
1104 unsigned int padlen
= align
- (len
% align
);
1106 if (bfd_bwrite (pad
, padlen
, abfd
) != padlen
)
1116 bfd_mach_o_write_header (bfd
*abfd
, bfd_mach_o_header
*header
)
1118 struct mach_o_header_external raw
;
1121 size
= mach_o_wide_p (header
) ?
1122 BFD_MACH_O_HEADER_64_SIZE
: BFD_MACH_O_HEADER_SIZE
;
1124 bfd_h_put_32 (abfd
, header
->magic
, raw
.magic
);
1125 bfd_h_put_32 (abfd
, header
->cputype
, raw
.cputype
);
1126 bfd_h_put_32 (abfd
, header
->cpusubtype
, raw
.cpusubtype
);
1127 bfd_h_put_32 (abfd
, header
->filetype
, raw
.filetype
);
1128 bfd_h_put_32 (abfd
, header
->ncmds
, raw
.ncmds
);
1129 bfd_h_put_32 (abfd
, header
->sizeofcmds
, raw
.sizeofcmds
);
1130 bfd_h_put_32 (abfd
, header
->flags
, raw
.flags
);
1132 if (mach_o_wide_p (header
))
1133 bfd_h_put_32 (abfd
, header
->reserved
, raw
.reserved
);
1135 if (bfd_seek (abfd
, 0, SEEK_SET
) != 0
1136 || bfd_bwrite (&raw
, size
, abfd
) != size
)
1143 bfd_mach_o_write_thread (bfd
*abfd
, bfd_mach_o_load_command
*command
)
1145 bfd_mach_o_thread_command
*cmd
= &command
->command
.thread
;
1147 struct mach_o_thread_command_external raw
;
1148 unsigned int offset
;
1150 BFD_ASSERT ((command
->type
== BFD_MACH_O_LC_THREAD
)
1151 || (command
->type
== BFD_MACH_O_LC_UNIXTHREAD
));
1153 offset
= BFD_MACH_O_LC_SIZE
;
1154 for (i
= 0; i
< cmd
->nflavours
; i
++)
1156 BFD_ASSERT ((cmd
->flavours
[i
].size
% 4) == 0);
1157 BFD_ASSERT (cmd
->flavours
[i
].offset
==
1158 (command
->offset
+ offset
+ BFD_MACH_O_LC_SIZE
));
1160 bfd_h_put_32 (abfd
, cmd
->flavours
[i
].flavour
, raw
.flavour
);
1161 bfd_h_put_32 (abfd
, (cmd
->flavours
[i
].size
/ 4), raw
.count
);
1163 if (bfd_seek (abfd
, command
->offset
+ offset
, SEEK_SET
) != 0
1164 || bfd_bwrite (&raw
, sizeof (raw
), abfd
) != sizeof (raw
))
1167 offset
+= cmd
->flavours
[i
].size
+ sizeof (raw
);
1174 bfd_mach_o_write_dylinker (bfd
*abfd
, bfd_mach_o_load_command
*command
)
1176 bfd_mach_o_dylinker_command
*cmd
= &command
->command
.dylinker
;
1177 struct mach_o_str_command_external raw
;
1178 unsigned int namelen
;
1180 bfd_h_put_32 (abfd
, cmd
->name_offset
, raw
.str
);
1182 if (bfd_seek (abfd
, command
->offset
+ BFD_MACH_O_LC_SIZE
, SEEK_SET
) != 0
1183 || bfd_bwrite (&raw
, sizeof (raw
), abfd
) != sizeof (raw
))
1186 namelen
= strlen (cmd
->name_str
) + 1;
1187 if (bfd_bwrite (cmd
->name_str
, namelen
, abfd
) != namelen
)
1190 if (bfd_mach_o_pad_command (abfd
, namelen
) < 0)
1197 bfd_mach_o_write_dylib (bfd
*abfd
, bfd_mach_o_load_command
*command
)
1199 bfd_mach_o_dylib_command
*cmd
= &command
->command
.dylib
;
1200 struct mach_o_dylib_command_external raw
;
1201 unsigned int namelen
;
1203 bfd_h_put_32 (abfd
, cmd
->name_offset
, raw
.name
);
1204 bfd_h_put_32 (abfd
, cmd
->timestamp
, raw
.timestamp
);
1205 bfd_h_put_32 (abfd
, cmd
->current_version
, raw
.current_version
);
1206 bfd_h_put_32 (abfd
, cmd
->compatibility_version
, raw
.compatibility_version
);
1208 if (bfd_seek (abfd
, command
->offset
+ BFD_MACH_O_LC_SIZE
, SEEK_SET
) != 0
1209 || bfd_bwrite (&raw
, sizeof (raw
), abfd
) != sizeof (raw
))
1212 namelen
= strlen (cmd
->name_str
) + 1;
1213 if (bfd_bwrite (cmd
->name_str
, namelen
, abfd
) != namelen
)
1216 if (bfd_mach_o_pad_command (abfd
, namelen
) < 0)
1223 bfd_mach_o_write_main (bfd
*abfd
, bfd_mach_o_load_command
*command
)
1225 bfd_mach_o_main_command
*cmd
= &command
->command
.main
;
1226 struct mach_o_entry_point_command_external raw
;
1228 bfd_h_put_64 (abfd
, cmd
->entryoff
, raw
.entryoff
);
1229 bfd_h_put_64 (abfd
, cmd
->stacksize
, raw
.stacksize
);
1231 if (bfd_seek (abfd
, command
->offset
+ BFD_MACH_O_LC_SIZE
, SEEK_SET
) != 0
1232 || bfd_bwrite (&raw
, sizeof (raw
), abfd
) != sizeof (raw
))
1239 bfd_mach_o_write_dyld_info (bfd
*abfd
, bfd_mach_o_load_command
*command
)
1241 bfd_mach_o_dyld_info_command
*cmd
= &command
->command
.dyld_info
;
1242 struct mach_o_dyld_info_command_external raw
;
1244 bfd_h_put_32 (abfd
, cmd
->rebase_off
, raw
.rebase_off
);
1245 bfd_h_put_32 (abfd
, cmd
->rebase_size
, raw
.rebase_size
);
1246 bfd_h_put_32 (abfd
, cmd
->bind_off
, raw
.bind_off
);
1247 bfd_h_put_32 (abfd
, cmd
->bind_size
, raw
.bind_size
);
1248 bfd_h_put_32 (abfd
, cmd
->weak_bind_off
, raw
.weak_bind_off
);
1249 bfd_h_put_32 (abfd
, cmd
->weak_bind_size
, raw
.weak_bind_size
);
1250 bfd_h_put_32 (abfd
, cmd
->lazy_bind_off
, raw
.lazy_bind_off
);
1251 bfd_h_put_32 (abfd
, cmd
->lazy_bind_size
, raw
.lazy_bind_size
);
1252 bfd_h_put_32 (abfd
, cmd
->export_off
, raw
.export_off
);
1253 bfd_h_put_32 (abfd
, cmd
->export_size
, raw
.export_size
);
1255 if (bfd_seek (abfd
, command
->offset
+ BFD_MACH_O_LC_SIZE
, SEEK_SET
) != 0
1256 || bfd_bwrite (&raw
, sizeof (raw
), abfd
) != sizeof (raw
))
1259 if (cmd
->rebase_size
!= 0)
1260 if (bfd_seek (abfd
, cmd
->rebase_off
, SEEK_SET
) != 0
1261 || (bfd_bwrite (cmd
->rebase_content
, cmd
->rebase_size
, abfd
) !=
1265 if (cmd
->bind_size
!= 0)
1266 if (bfd_seek (abfd
, cmd
->bind_off
, SEEK_SET
) != 0
1267 || (bfd_bwrite (cmd
->bind_content
, cmd
->bind_size
, abfd
) !=
1271 if (cmd
->weak_bind_size
!= 0)
1272 if (bfd_seek (abfd
, cmd
->weak_bind_off
, SEEK_SET
) != 0
1273 || (bfd_bwrite (cmd
->weak_bind_content
, cmd
->weak_bind_size
, abfd
) !=
1274 cmd
->weak_bind_size
))
1277 if (cmd
->lazy_bind_size
!= 0)
1278 if (bfd_seek (abfd
, cmd
->lazy_bind_off
, SEEK_SET
) != 0
1279 || (bfd_bwrite (cmd
->lazy_bind_content
, cmd
->lazy_bind_size
, abfd
) !=
1280 cmd
->lazy_bind_size
))
1283 if (cmd
->export_size
!= 0)
1284 if (bfd_seek (abfd
, cmd
->export_off
, SEEK_SET
) != 0
1285 || (bfd_bwrite (cmd
->export_content
, cmd
->export_size
, abfd
) !=
1293 bfd_mach_o_get_reloc_upper_bound (bfd
*abfd ATTRIBUTE_UNUSED
,
1296 return (asect
->reloc_count
+ 1) * sizeof (arelent
*);
1299 /* In addition to the need to byte-swap the symbol number, the bit positions
1300 of the fields in the relocation information vary per target endian-ness. */
1303 bfd_mach_o_swap_in_non_scattered_reloc (bfd
*abfd
, bfd_mach_o_reloc_info
*rel
,
1304 unsigned char *fields
)
1306 unsigned char info
= fields
[3];
1308 if (bfd_big_endian (abfd
))
1310 rel
->r_value
= (fields
[0] << 16) | (fields
[1] << 8) | fields
[2];
1311 rel
->r_type
= (info
>> BFD_MACH_O_BE_TYPE_SHIFT
) & BFD_MACH_O_TYPE_MASK
;
1312 rel
->r_pcrel
= (info
& BFD_MACH_O_BE_PCREL
) ? 1 : 0;
1313 rel
->r_length
= (info
>> BFD_MACH_O_BE_LENGTH_SHIFT
)
1314 & BFD_MACH_O_LENGTH_MASK
;
1315 rel
->r_extern
= (info
& BFD_MACH_O_BE_EXTERN
) ? 1 : 0;
1319 rel
->r_value
= (fields
[2] << 16) | (fields
[1] << 8) | fields
[0];
1320 rel
->r_type
= (info
>> BFD_MACH_O_LE_TYPE_SHIFT
) & BFD_MACH_O_TYPE_MASK
;
1321 rel
->r_pcrel
= (info
& BFD_MACH_O_LE_PCREL
) ? 1 : 0;
1322 rel
->r_length
= (info
>> BFD_MACH_O_LE_LENGTH_SHIFT
)
1323 & BFD_MACH_O_LENGTH_MASK
;
1324 rel
->r_extern
= (info
& BFD_MACH_O_LE_EXTERN
) ? 1 : 0;
1329 bfd_mach_o_canonicalize_one_reloc (bfd
*abfd
,
1330 struct mach_o_reloc_info_external
*raw
,
1331 arelent
*res
, asymbol
**syms
)
1333 bfd_mach_o_data_struct
*mdata
= bfd_mach_o_get_data (abfd
);
1334 bfd_mach_o_backend_data
*bed
= bfd_mach_o_get_backend_data (abfd
);
1335 bfd_mach_o_reloc_info reloc
;
1339 addr
= bfd_get_32 (abfd
, raw
->r_address
);
1340 res
->sym_ptr_ptr
= NULL
;
1343 if (addr
& BFD_MACH_O_SR_SCATTERED
)
1346 bfd_vma symnum
= bfd_get_32 (abfd
, raw
->r_symbolnum
);
1348 /* Scattered relocation, can't be extern. */
1349 reloc
.r_scattered
= 1;
1352 /* Extract section and offset from r_value (symnum). */
1353 reloc
.r_value
= symnum
;
1354 /* FIXME: This breaks when a symbol in a reloc exactly follows the
1355 end of the data for the section (e.g. in a calculation of section
1356 data length). At present, the symbol will end up associated with
1357 the following section or, if it falls within alignment padding, as
1358 null - which will assert later. */
1359 for (j
= 0; j
< mdata
->nsects
; j
++)
1361 bfd_mach_o_section
*sect
= mdata
->sections
[j
];
1362 if (symnum
>= sect
->addr
&& symnum
< sect
->addr
+ sect
->size
)
1364 res
->sym_ptr_ptr
= sect
->bfdsection
->symbol_ptr_ptr
;
1365 res
->addend
= symnum
- sect
->addr
;
1370 /* Extract the info and address fields from r_address. */
1371 reloc
.r_type
= BFD_MACH_O_GET_SR_TYPE (addr
);
1372 reloc
.r_length
= BFD_MACH_O_GET_SR_LENGTH (addr
);
1373 reloc
.r_pcrel
= addr
& BFD_MACH_O_SR_PCREL
;
1374 reloc
.r_address
= BFD_MACH_O_GET_SR_TYPE (addr
);
1375 res
->address
= BFD_MACH_O_GET_SR_ADDRESS (addr
);
1381 /* Non-scattered relocation. */
1382 reloc
.r_scattered
= 0;
1384 /* The value and info fields have to be extracted dependent on target
1386 bfd_mach_o_swap_in_non_scattered_reloc (abfd
, &reloc
, raw
->r_symbolnum
);
1387 num
= reloc
.r_value
;
1391 /* PR 17512: file: 8396-1185-0.004. */
1392 if (num
>= (unsigned) bfd_mach_o_count_symbols (abfd
))
1393 sym
= bfd_und_section_ptr
->symbol_ptr_ptr
;
1394 else if (syms
== NULL
)
1395 sym
= bfd_und_section_ptr
->symbol_ptr_ptr
;
1397 /* An external symbol number. */
1400 else if (num
== 0x00ffffff || num
== 0)
1402 /* The 'symnum' in a non-scattered PAIR is 0x00ffffff. But as this
1403 is generic code, we don't know wether this is really a PAIR.
1404 This value is almost certainly not a valid section number, hence
1405 this specific case to avoid an assertion failure.
1406 Target specific swap_reloc_in routine should adjust that. */
1407 sym
= bfd_abs_section_ptr
->symbol_ptr_ptr
;
1411 /* PR 17512: file: 006-2964-0.004. */
1412 if (num
> mdata
->nsects
)
1415 /* A section number. */
1416 sym
= mdata
->sections
[num
- 1]->bfdsection
->symbol_ptr_ptr
;
1417 /* For a symbol defined in section S, the addend (stored in the
1418 binary) contains the address of the section. To comply with
1419 bfd convention, subtract the section address.
1420 Use the address from the header, so that the user can modify
1421 the vma of the section. */
1422 res
->addend
= -mdata
->sections
[num
- 1]->addr
;
1424 /* Note: Pairs for PPC LO/HI/HA are not scattered, but contain the offset
1425 in the lower 16bits of the address value. So we have to find the
1426 'symbol' from the preceding reloc. We do this even though the
1427 section symbol is probably not needed here, because NULL symbol
1428 values cause an assert in generic BFD code. This must be done in
1429 the PPC swap_reloc_in routine. */
1430 res
->sym_ptr_ptr
= sym
;
1432 /* The 'address' is just r_address.
1433 ??? maybe this should be masked with 0xffffff for safety. */
1434 res
->address
= addr
;
1435 reloc
.r_address
= addr
;
1438 /* We have set up a reloc with all the information present, so the swapper
1439 can modify address, value and addend fields, if necessary, to convey
1440 information in the generic BFD reloc that is mach-o specific. */
1442 if (!(*bed
->_bfd_mach_o_swap_reloc_in
)(res
, &reloc
))
1449 bfd_mach_o_canonicalize_relocs (bfd
*abfd
, unsigned long filepos
,
1450 unsigned long count
,
1451 arelent
*res
, asymbol
**syms
)
1454 struct mach_o_reloc_info_external
*native_relocs
;
1455 bfd_size_type native_size
;
1457 /* Allocate and read relocs. */
1458 native_size
= count
* BFD_MACH_O_RELENT_SIZE
;
1460 /* PR 17512: file: 09477b57. */
1461 if (native_size
< count
)
1465 (struct mach_o_reloc_info_external
*) bfd_malloc (native_size
);
1466 if (native_relocs
== NULL
)
1469 if (bfd_seek (abfd
, filepos
, SEEK_SET
) != 0
1470 || bfd_bread (native_relocs
, native_size
, abfd
) != native_size
)
1473 for (i
= 0; i
< count
; i
++)
1475 if (bfd_mach_o_canonicalize_one_reloc (abfd
, &native_relocs
[i
],
1479 free (native_relocs
);
1482 free (native_relocs
);
1487 bfd_mach_o_canonicalize_reloc (bfd
*abfd
, asection
*asect
,
1488 arelent
**rels
, asymbol
**syms
)
1490 bfd_mach_o_backend_data
*bed
= bfd_mach_o_get_backend_data (abfd
);
1494 if (asect
->reloc_count
== 0)
1497 /* No need to go further if we don't know how to read relocs. */
1498 if (bed
->_bfd_mach_o_swap_reloc_in
== NULL
)
1501 if (asect
->relocation
== NULL
)
1503 if (asect
->reloc_count
* sizeof (arelent
) < asect
->reloc_count
)
1505 res
= bfd_malloc (asect
->reloc_count
* sizeof (arelent
));
1509 if (bfd_mach_o_canonicalize_relocs (abfd
, asect
->rel_filepos
,
1510 asect
->reloc_count
, res
, syms
) < 0)
1515 asect
->relocation
= res
;
1518 res
= asect
->relocation
;
1519 for (i
= 0; i
< asect
->reloc_count
; i
++)
1527 bfd_mach_o_get_dynamic_reloc_upper_bound (bfd
*abfd
)
1529 bfd_mach_o_data_struct
*mdata
= bfd_mach_o_get_data (abfd
);
1531 if (mdata
->dysymtab
== NULL
)
1533 return (mdata
->dysymtab
->nextrel
+ mdata
->dysymtab
->nlocrel
+ 1)
1534 * sizeof (arelent
*);
1538 bfd_mach_o_canonicalize_dynamic_reloc (bfd
*abfd
, arelent
**rels
,
1539 struct bfd_symbol
**syms
)
1541 bfd_mach_o_data_struct
*mdata
= bfd_mach_o_get_data (abfd
);
1542 bfd_mach_o_dysymtab_command
*dysymtab
= mdata
->dysymtab
;
1543 bfd_mach_o_backend_data
*bed
= bfd_mach_o_get_backend_data (abfd
);
1547 if (dysymtab
== NULL
)
1549 if (dysymtab
->nextrel
== 0 && dysymtab
->nlocrel
== 0)
1552 /* No need to go further if we don't know how to read relocs. */
1553 if (bed
->_bfd_mach_o_swap_reloc_in
== NULL
)
1556 if (mdata
->dyn_reloc_cache
== NULL
)
1558 if ((dysymtab
->nextrel
+ dysymtab
->nlocrel
) * sizeof (arelent
)
1559 < (dysymtab
->nextrel
+ dysymtab
->nlocrel
))
1562 res
= bfd_malloc ((dysymtab
->nextrel
+ dysymtab
->nlocrel
)
1563 * sizeof (arelent
));
1567 if (bfd_mach_o_canonicalize_relocs (abfd
, dysymtab
->extreloff
,
1568 dysymtab
->nextrel
, res
, syms
) < 0)
1574 if (bfd_mach_o_canonicalize_relocs (abfd
, dysymtab
->locreloff
,
1576 res
+ dysymtab
->nextrel
, syms
) < 0)
1582 mdata
->dyn_reloc_cache
= res
;
1585 res
= mdata
->dyn_reloc_cache
;
1586 for (i
= 0; i
< dysymtab
->nextrel
+ dysymtab
->nlocrel
; i
++)
1592 /* In addition to the need to byte-swap the symbol number, the bit positions
1593 of the fields in the relocation information vary per target endian-ness. */
1596 bfd_mach_o_swap_out_non_scattered_reloc (bfd
*abfd
, unsigned char *fields
,
1597 bfd_mach_o_reloc_info
*rel
)
1599 unsigned char info
= 0;
1601 BFD_ASSERT (rel
->r_type
<= 15);
1602 BFD_ASSERT (rel
->r_length
<= 3);
1604 if (bfd_big_endian (abfd
))
1606 fields
[0] = (rel
->r_value
>> 16) & 0xff;
1607 fields
[1] = (rel
->r_value
>> 8) & 0xff;
1608 fields
[2] = rel
->r_value
& 0xff;
1609 info
|= rel
->r_type
<< BFD_MACH_O_BE_TYPE_SHIFT
;
1610 info
|= rel
->r_pcrel
? BFD_MACH_O_BE_PCREL
: 0;
1611 info
|= rel
->r_length
<< BFD_MACH_O_BE_LENGTH_SHIFT
;
1612 info
|= rel
->r_extern
? BFD_MACH_O_BE_EXTERN
: 0;
1616 fields
[2] = (rel
->r_value
>> 16) & 0xff;
1617 fields
[1] = (rel
->r_value
>> 8) & 0xff;
1618 fields
[0] = rel
->r_value
& 0xff;
1619 info
|= rel
->r_type
<< BFD_MACH_O_LE_TYPE_SHIFT
;
1620 info
|= rel
->r_pcrel
? BFD_MACH_O_LE_PCREL
: 0;
1621 info
|= rel
->r_length
<< BFD_MACH_O_LE_LENGTH_SHIFT
;
1622 info
|= rel
->r_extern
? BFD_MACH_O_LE_EXTERN
: 0;
1628 bfd_mach_o_write_relocs (bfd
*abfd
, bfd_mach_o_section
*section
)
1633 bfd_mach_o_backend_data
*bed
= bfd_mach_o_get_backend_data (abfd
);
1635 sec
= section
->bfdsection
;
1636 if (sec
->reloc_count
== 0)
1639 if (bed
->_bfd_mach_o_swap_reloc_out
== NULL
)
1642 if (bfd_seek (abfd
, section
->reloff
, SEEK_SET
) != 0)
1645 /* Convert and write. */
1646 entries
= section
->bfdsection
->orelocation
;
1647 for (i
= 0; i
< section
->nreloc
; i
++)
1649 arelent
*rel
= entries
[i
];
1650 struct mach_o_reloc_info_external raw
;
1651 bfd_mach_o_reloc_info info
, *pinfo
= &info
;
1653 /* Convert relocation to an intermediate representation. */
1654 if (!(*bed
->_bfd_mach_o_swap_reloc_out
) (rel
, pinfo
))
1657 /* Lower the relocation info. */
1658 if (pinfo
->r_scattered
)
1662 v
= BFD_MACH_O_SR_SCATTERED
1663 | (pinfo
->r_pcrel
? BFD_MACH_O_SR_PCREL
: 0)
1664 | BFD_MACH_O_SET_SR_LENGTH (pinfo
->r_length
)
1665 | BFD_MACH_O_SET_SR_TYPE (pinfo
->r_type
)
1666 | BFD_MACH_O_SET_SR_ADDRESS (pinfo
->r_address
);
1667 /* Note: scattered relocs have field in reverse order... */
1668 bfd_put_32 (abfd
, v
, raw
.r_address
);
1669 bfd_put_32 (abfd
, pinfo
->r_value
, raw
.r_symbolnum
);
1673 bfd_put_32 (abfd
, pinfo
->r_address
, raw
.r_address
);
1674 bfd_mach_o_swap_out_non_scattered_reloc (abfd
, raw
.r_symbolnum
,
1678 if (bfd_bwrite (&raw
, BFD_MACH_O_RELENT_SIZE
, abfd
)
1679 != BFD_MACH_O_RELENT_SIZE
)
1686 bfd_mach_o_write_section_32 (bfd
*abfd
, bfd_mach_o_section
*section
)
1688 struct mach_o_section_32_external raw
;
1690 memcpy (raw
.sectname
, section
->sectname
, 16);
1691 memcpy (raw
.segname
, section
->segname
, 16);
1692 bfd_h_put_32 (abfd
, section
->addr
, raw
.addr
);
1693 bfd_h_put_32 (abfd
, section
->size
, raw
.size
);
1694 bfd_h_put_32 (abfd
, section
->offset
, raw
.offset
);
1695 bfd_h_put_32 (abfd
, section
->align
, raw
.align
);
1696 bfd_h_put_32 (abfd
, section
->reloff
, raw
.reloff
);
1697 bfd_h_put_32 (abfd
, section
->nreloc
, raw
.nreloc
);
1698 bfd_h_put_32 (abfd
, section
->flags
, raw
.flags
);
1699 bfd_h_put_32 (abfd
, section
->reserved1
, raw
.reserved1
);
1700 bfd_h_put_32 (abfd
, section
->reserved2
, raw
.reserved2
);
1702 if (bfd_bwrite (&raw
, BFD_MACH_O_SECTION_SIZE
, abfd
)
1703 != BFD_MACH_O_SECTION_SIZE
)
1710 bfd_mach_o_write_section_64 (bfd
*abfd
, bfd_mach_o_section
*section
)
1712 struct mach_o_section_64_external raw
;
1714 memcpy (raw
.sectname
, section
->sectname
, 16);
1715 memcpy (raw
.segname
, section
->segname
, 16);
1716 bfd_h_put_64 (abfd
, section
->addr
, raw
.addr
);
1717 bfd_h_put_64 (abfd
, section
->size
, raw
.size
);
1718 bfd_h_put_32 (abfd
, section
->offset
, raw
.offset
);
1719 bfd_h_put_32 (abfd
, section
->align
, raw
.align
);
1720 bfd_h_put_32 (abfd
, section
->reloff
, raw
.reloff
);
1721 bfd_h_put_32 (abfd
, section
->nreloc
, raw
.nreloc
);
1722 bfd_h_put_32 (abfd
, section
->flags
, raw
.flags
);
1723 bfd_h_put_32 (abfd
, section
->reserved1
, raw
.reserved1
);
1724 bfd_h_put_32 (abfd
, section
->reserved2
, raw
.reserved2
);
1725 bfd_h_put_32 (abfd
, section
->reserved3
, raw
.reserved3
);
1727 if (bfd_bwrite (&raw
, BFD_MACH_O_SECTION_64_SIZE
, abfd
)
1728 != BFD_MACH_O_SECTION_64_SIZE
)
1735 bfd_mach_o_write_segment_32 (bfd
*abfd
, bfd_mach_o_load_command
*command
)
1737 struct mach_o_segment_command_32_external raw
;
1738 bfd_mach_o_segment_command
*seg
= &command
->command
.segment
;
1739 bfd_mach_o_section
*sec
;
1741 BFD_ASSERT (command
->type
== BFD_MACH_O_LC_SEGMENT
);
1743 for (sec
= seg
->sect_head
; sec
!= NULL
; sec
= sec
->next
)
1744 if (!bfd_mach_o_write_relocs (abfd
, sec
))
1747 memcpy (raw
.segname
, seg
->segname
, 16);
1748 bfd_h_put_32 (abfd
, seg
->vmaddr
, raw
.vmaddr
);
1749 bfd_h_put_32 (abfd
, seg
->vmsize
, raw
.vmsize
);
1750 bfd_h_put_32 (abfd
, seg
->fileoff
, raw
.fileoff
);
1751 bfd_h_put_32 (abfd
, seg
->filesize
, raw
.filesize
);
1752 bfd_h_put_32 (abfd
, seg
->maxprot
, raw
.maxprot
);
1753 bfd_h_put_32 (abfd
, seg
->initprot
, raw
.initprot
);
1754 bfd_h_put_32 (abfd
, seg
->nsects
, raw
.nsects
);
1755 bfd_h_put_32 (abfd
, seg
->flags
, raw
.flags
);
1757 if (bfd_seek (abfd
, command
->offset
+ BFD_MACH_O_LC_SIZE
, SEEK_SET
) != 0
1758 || bfd_bwrite (&raw
, sizeof (raw
), abfd
) != sizeof (raw
))
1761 for (sec
= seg
->sect_head
; sec
!= NULL
; sec
= sec
->next
)
1762 if (!bfd_mach_o_write_section_32 (abfd
, sec
))
1769 bfd_mach_o_write_segment_64 (bfd
*abfd
, bfd_mach_o_load_command
*command
)
1771 struct mach_o_segment_command_64_external raw
;
1772 bfd_mach_o_segment_command
*seg
= &command
->command
.segment
;
1773 bfd_mach_o_section
*sec
;
1775 BFD_ASSERT (command
->type
== BFD_MACH_O_LC_SEGMENT_64
);
1777 for (sec
= seg
->sect_head
; sec
!= NULL
; sec
= sec
->next
)
1778 if (!bfd_mach_o_write_relocs (abfd
, sec
))
1781 memcpy (raw
.segname
, seg
->segname
, 16);
1782 bfd_h_put_64 (abfd
, seg
->vmaddr
, raw
.vmaddr
);
1783 bfd_h_put_64 (abfd
, seg
->vmsize
, raw
.vmsize
);
1784 bfd_h_put_64 (abfd
, seg
->fileoff
, raw
.fileoff
);
1785 bfd_h_put_64 (abfd
, seg
->filesize
, raw
.filesize
);
1786 bfd_h_put_32 (abfd
, seg
->maxprot
, raw
.maxprot
);
1787 bfd_h_put_32 (abfd
, seg
->initprot
, raw
.initprot
);
1788 bfd_h_put_32 (abfd
, seg
->nsects
, raw
.nsects
);
1789 bfd_h_put_32 (abfd
, seg
->flags
, raw
.flags
);
1791 if (bfd_seek (abfd
, command
->offset
+ BFD_MACH_O_LC_SIZE
, SEEK_SET
) != 0
1792 || bfd_bwrite (&raw
, sizeof (raw
), abfd
) != sizeof (raw
))
1795 for (sec
= seg
->sect_head
; sec
!= NULL
; sec
= sec
->next
)
1796 if (!bfd_mach_o_write_section_64 (abfd
, sec
))
1803 bfd_mach_o_write_symtab_content (bfd
*abfd
, bfd_mach_o_symtab_command
*sym
)
1805 bfd_mach_o_data_struct
*mdata
= bfd_mach_o_get_data (abfd
);
1807 unsigned int wide
= bfd_mach_o_wide_p (abfd
);
1808 struct bfd_strtab_hash
*strtab
;
1809 asymbol
**symbols
= bfd_get_outsymbols (abfd
);
1812 /* Write the symbols first. */
1813 if (bfd_seek (abfd
, sym
->symoff
, SEEK_SET
) != 0)
1816 strtab
= _bfd_stringtab_init ();
1821 /* Although we don't strictly need to do this, for compatibility with
1822 Darwin system tools, actually output an empty string for the index
1824 _bfd_stringtab_add (strtab
, "", TRUE
, FALSE
);
1826 for (i
= 0; i
< sym
->nsyms
; i
++)
1828 bfd_size_type str_index
;
1829 bfd_mach_o_asymbol
*s
= (bfd_mach_o_asymbol
*)symbols
[i
];
1831 if (s
->symbol
.name
== 0 || s
->symbol
.name
[0] == '\0')
1832 /* An index of 0 always means the empty string. */
1836 str_index
= _bfd_stringtab_add (strtab
, s
->symbol
.name
, TRUE
, FALSE
);
1838 if (str_index
== (bfd_size_type
) -1)
1844 struct mach_o_nlist_64_external raw
;
1846 bfd_h_put_32 (abfd
, str_index
, raw
.n_strx
);
1847 bfd_h_put_8 (abfd
, s
->n_type
, raw
.n_type
);
1848 bfd_h_put_8 (abfd
, s
->n_sect
, raw
.n_sect
);
1849 bfd_h_put_16 (abfd
, s
->n_desc
, raw
.n_desc
);
1850 bfd_h_put_64 (abfd
, s
->symbol
.section
->vma
+ s
->symbol
.value
,
1853 if (bfd_bwrite (&raw
, sizeof (raw
), abfd
) != sizeof (raw
))
1858 struct mach_o_nlist_external raw
;
1860 bfd_h_put_32 (abfd
, str_index
, raw
.n_strx
);
1861 bfd_h_put_8 (abfd
, s
->n_type
, raw
.n_type
);
1862 bfd_h_put_8 (abfd
, s
->n_sect
, raw
.n_sect
);
1863 bfd_h_put_16 (abfd
, s
->n_desc
, raw
.n_desc
);
1864 bfd_h_put_32 (abfd
, s
->symbol
.section
->vma
+ s
->symbol
.value
,
1867 if (bfd_bwrite (&raw
, sizeof (raw
), abfd
) != sizeof (raw
))
1871 sym
->strsize
= _bfd_stringtab_size (strtab
);
1872 sym
->stroff
= mdata
->filelen
;
1873 mdata
->filelen
+= sym
->strsize
;
1875 if (bfd_seek (abfd
, sym
->stroff
, SEEK_SET
) != 0)
1878 if (_bfd_stringtab_emit (abfd
, strtab
) != TRUE
)
1881 /* Pad string table. */
1882 padlen
= bfd_mach_o_pad4 (abfd
, sym
->strsize
);
1885 mdata
->filelen
+= padlen
;
1886 sym
->strsize
+= padlen
;
1891 _bfd_stringtab_free (strtab
);
1897 bfd_mach_o_write_symtab (bfd
*abfd
, bfd_mach_o_load_command
*command
)
1899 bfd_mach_o_symtab_command
*sym
= &command
->command
.symtab
;
1900 struct mach_o_symtab_command_external raw
;
1902 BFD_ASSERT (command
->type
== BFD_MACH_O_LC_SYMTAB
);
1905 bfd_h_put_32 (abfd
, sym
->symoff
, raw
.symoff
);
1906 bfd_h_put_32 (abfd
, sym
->nsyms
, raw
.nsyms
);
1907 bfd_h_put_32 (abfd
, sym
->stroff
, raw
.stroff
);
1908 bfd_h_put_32 (abfd
, sym
->strsize
, raw
.strsize
);
1910 if (bfd_seek (abfd
, command
->offset
+ BFD_MACH_O_LC_SIZE
, SEEK_SET
) != 0
1911 || bfd_bwrite (&raw
, sizeof (raw
), abfd
) != sizeof (raw
))
1917 /* Count the number of indirect symbols in the image.
1918 Requires that the sections are in their final order. */
1921 bfd_mach_o_count_indirect_symbols (bfd
*abfd
, bfd_mach_o_data_struct
*mdata
)
1924 unsigned int nisyms
= 0;
1926 for (i
= 0; i
< mdata
->nsects
; ++i
)
1928 bfd_mach_o_section
*sec
= mdata
->sections
[i
];
1930 switch (sec
->flags
& BFD_MACH_O_SECTION_TYPE_MASK
)
1932 case BFD_MACH_O_S_NON_LAZY_SYMBOL_POINTERS
:
1933 case BFD_MACH_O_S_LAZY_SYMBOL_POINTERS
:
1934 case BFD_MACH_O_S_SYMBOL_STUBS
:
1935 nisyms
+= bfd_mach_o_section_get_nbr_indirect (abfd
, sec
);
1944 /* Create the dysymtab. */
1947 bfd_mach_o_build_dysymtab (bfd
*abfd
, bfd_mach_o_dysymtab_command
*cmd
)
1949 bfd_mach_o_data_struct
*mdata
= bfd_mach_o_get_data (abfd
);
1952 We are not going to try and fill these in yet and, moreover, we are
1953 going to bail if they are already set. */
1954 if (cmd
->nmodtab
!= 0
1956 || cmd
->nextrefsyms
!= 0)
1958 (*_bfd_error_handler
) (_("sorry: modtab, toc and extrefsyms are not yet"
1959 " implemented for dysymtab commands."));
1965 if (bfd_get_symcount (abfd
) > 0)
1967 asymbol
**symbols
= bfd_get_outsymbols (abfd
);
1970 /* Count the number of each kind of symbol. */
1971 for (i
= 0; i
< bfd_get_symcount (abfd
); ++i
)
1973 bfd_mach_o_asymbol
*s
= (bfd_mach_o_asymbol
*)symbols
[i
];
1974 if (s
->n_type
& (BFD_MACH_O_N_EXT
| BFD_MACH_O_N_PEXT
))
1978 cmd
->iextdefsym
= i
;
1979 for (; i
< bfd_get_symcount (abfd
); ++i
)
1981 bfd_mach_o_asymbol
*s
= (bfd_mach_o_asymbol
*)symbols
[i
];
1982 if ((s
->n_type
& BFD_MACH_O_N_TYPE
) == BFD_MACH_O_N_UNDF
)
1985 cmd
->nextdefsym
= i
- cmd
->nlocalsym
;
1986 cmd
->iundefsym
= cmd
->nextdefsym
+ cmd
->iextdefsym
;
1987 cmd
->nundefsym
= bfd_get_symcount (abfd
)
1994 cmd
->iextdefsym
= 0;
1995 cmd
->nextdefsym
= 0;
2000 cmd
->nindirectsyms
= bfd_mach_o_count_indirect_symbols (abfd
, mdata
);
2001 if (cmd
->nindirectsyms
> 0)
2006 mdata
->filelen
= FILE_ALIGN (mdata
->filelen
, 2);
2007 cmd
->indirectsymoff
= mdata
->filelen
;
2008 mdata
->filelen
+= cmd
->nindirectsyms
* 4;
2010 if (cmd
->nindirectsyms
* 4 < cmd
->nindirectsyms
)
2012 cmd
->indirect_syms
= bfd_zalloc (abfd
, cmd
->nindirectsyms
* 4);
2013 if (cmd
->indirect_syms
== NULL
)
2017 for (i
= 0; i
< mdata
->nsects
; ++i
)
2019 bfd_mach_o_section
*sec
= mdata
->sections
[i
];
2021 switch (sec
->flags
& BFD_MACH_O_SECTION_TYPE_MASK
)
2023 case BFD_MACH_O_S_NON_LAZY_SYMBOL_POINTERS
:
2024 case BFD_MACH_O_S_LAZY_SYMBOL_POINTERS
:
2025 case BFD_MACH_O_S_SYMBOL_STUBS
:
2028 bfd_mach_o_asymbol
**isyms
= sec
->indirect_syms
;
2030 num
= bfd_mach_o_section_get_nbr_indirect (abfd
, sec
);
2031 if (isyms
== NULL
|| num
== 0)
2033 /* Record the starting index in the reserved1 field. */
2035 for (j
= 0; j
< num
; j
++, n
++)
2037 if (isyms
[j
] == NULL
)
2038 cmd
->indirect_syms
[n
] = BFD_MACH_O_INDIRECT_SYM_LOCAL
;
2039 else if (isyms
[j
]->symbol
.section
== bfd_abs_section_ptr
2040 && ! (isyms
[j
]->n_type
& BFD_MACH_O_N_EXT
))
2041 cmd
->indirect_syms
[n
] = BFD_MACH_O_INDIRECT_SYM_LOCAL
2042 | BFD_MACH_O_INDIRECT_SYM_ABS
;
2044 cmd
->indirect_syms
[n
] = isyms
[j
]->symbol
.udata
.i
;
2057 /* Write a dysymtab command.
2058 TODO: Possibly coalesce writes of smaller objects. */
2061 bfd_mach_o_write_dysymtab (bfd
*abfd
, bfd_mach_o_load_command
*command
)
2063 bfd_mach_o_dysymtab_command
*cmd
= &command
->command
.dysymtab
;
2065 BFD_ASSERT (command
->type
== BFD_MACH_O_LC_DYSYMTAB
);
2067 if (cmd
->nmodtab
!= 0)
2071 if (bfd_seek (abfd
, cmd
->modtaboff
, SEEK_SET
) != 0)
2074 for (i
= 0; i
< cmd
->nmodtab
; i
++)
2076 bfd_mach_o_dylib_module
*module
= &cmd
->dylib_module
[i
];
2080 iinit
= module
->iinit
& 0xffff;
2081 iinit
|= ((module
->iterm
& 0xffff) << 16);
2083 ninit
= module
->ninit
& 0xffff;
2084 ninit
|= ((module
->nterm
& 0xffff) << 16);
2086 if (bfd_mach_o_wide_p (abfd
))
2088 struct mach_o_dylib_module_64_external w
;
2090 bfd_h_put_32 (abfd
, module
->module_name_idx
, &w
.module_name
);
2091 bfd_h_put_32 (abfd
, module
->iextdefsym
, &w
.iextdefsym
);
2092 bfd_h_put_32 (abfd
, module
->nextdefsym
, &w
.nextdefsym
);
2093 bfd_h_put_32 (abfd
, module
->irefsym
, &w
.irefsym
);
2094 bfd_h_put_32 (abfd
, module
->nrefsym
, &w
.nrefsym
);
2095 bfd_h_put_32 (abfd
, module
->ilocalsym
, &w
.ilocalsym
);
2096 bfd_h_put_32 (abfd
, module
->nlocalsym
, &w
.nlocalsym
);
2097 bfd_h_put_32 (abfd
, module
->iextrel
, &w
.iextrel
);
2098 bfd_h_put_32 (abfd
, module
->nextrel
, &w
.nextrel
);
2099 bfd_h_put_32 (abfd
, iinit
, &w
.iinit_iterm
);
2100 bfd_h_put_32 (abfd
, ninit
, &w
.ninit_nterm
);
2101 bfd_h_put_64 (abfd
, module
->objc_module_info_addr
,
2102 &w
.objc_module_info_addr
);
2103 bfd_h_put_32 (abfd
, module
->objc_module_info_size
,
2104 &w
.objc_module_info_size
);
2106 if (bfd_bwrite ((void *) &w
, sizeof (w
), abfd
) != sizeof (w
))
2111 struct mach_o_dylib_module_external n
;
2113 bfd_h_put_32 (abfd
, module
->module_name_idx
, &n
.module_name
);
2114 bfd_h_put_32 (abfd
, module
->iextdefsym
, &n
.iextdefsym
);
2115 bfd_h_put_32 (abfd
, module
->nextdefsym
, &n
.nextdefsym
);
2116 bfd_h_put_32 (abfd
, module
->irefsym
, &n
.irefsym
);
2117 bfd_h_put_32 (abfd
, module
->nrefsym
, &n
.nrefsym
);
2118 bfd_h_put_32 (abfd
, module
->ilocalsym
, &n
.ilocalsym
);
2119 bfd_h_put_32 (abfd
, module
->nlocalsym
, &n
.nlocalsym
);
2120 bfd_h_put_32 (abfd
, module
->iextrel
, &n
.iextrel
);
2121 bfd_h_put_32 (abfd
, module
->nextrel
, &n
.nextrel
);
2122 bfd_h_put_32 (abfd
, iinit
, &n
.iinit_iterm
);
2123 bfd_h_put_32 (abfd
, ninit
, &n
.ninit_nterm
);
2124 bfd_h_put_32 (abfd
, module
->objc_module_info_addr
,
2125 &n
.objc_module_info_addr
);
2126 bfd_h_put_32 (abfd
, module
->objc_module_info_size
,
2127 &n
.objc_module_info_size
);
2129 if (bfd_bwrite ((void *) &n
, sizeof (n
), abfd
) != sizeof (n
))
2139 if (bfd_seek (abfd
, cmd
->tocoff
, SEEK_SET
) != 0)
2142 for (i
= 0; i
< cmd
->ntoc
; i
++)
2144 struct mach_o_dylib_table_of_contents_external raw
;
2145 bfd_mach_o_dylib_table_of_content
*toc
= &cmd
->dylib_toc
[i
];
2147 bfd_h_put_32 (abfd
, toc
->symbol_index
, &raw
.symbol_index
);
2148 bfd_h_put_32 (abfd
, toc
->module_index
, &raw
.module_index
);
2150 if (bfd_bwrite (&raw
, sizeof (raw
), abfd
) != sizeof (raw
))
2155 if (cmd
->nindirectsyms
> 0)
2159 if (bfd_seek (abfd
, cmd
->indirectsymoff
, SEEK_SET
) != 0)
2162 for (i
= 0; i
< cmd
->nindirectsyms
; ++i
)
2164 unsigned char raw
[4];
2166 bfd_h_put_32 (abfd
, cmd
->indirect_syms
[i
], &raw
);
2167 if (bfd_bwrite (raw
, sizeof (raw
), abfd
) != sizeof (raw
))
2172 if (cmd
->nextrefsyms
!= 0)
2176 if (bfd_seek (abfd
, cmd
->extrefsymoff
, SEEK_SET
) != 0)
2179 for (i
= 0; i
< cmd
->nextrefsyms
; i
++)
2182 unsigned char raw
[4];
2183 bfd_mach_o_dylib_reference
*ref
= &cmd
->ext_refs
[i
];
2185 /* Fields isym and flags are written as bit-fields, thus we need
2186 a specific processing for endianness. */
2188 if (bfd_big_endian (abfd
))
2190 v
= ((ref
->isym
& 0xffffff) << 8);
2191 v
|= ref
->flags
& 0xff;
2195 v
= ref
->isym
& 0xffffff;
2196 v
|= ((ref
->flags
& 0xff) << 24);
2199 bfd_h_put_32 (abfd
, v
, raw
);
2200 if (bfd_bwrite (raw
, sizeof (raw
), abfd
) != sizeof (raw
))
2206 if (bfd_seek (abfd
, command
->offset
+ BFD_MACH_O_LC_SIZE
, SEEK_SET
) != 0)
2210 struct mach_o_dysymtab_command_external raw
;
2212 bfd_h_put_32 (abfd
, cmd
->ilocalsym
, &raw
.ilocalsym
);
2213 bfd_h_put_32 (abfd
, cmd
->nlocalsym
, &raw
.nlocalsym
);
2214 bfd_h_put_32 (abfd
, cmd
->iextdefsym
, &raw
.iextdefsym
);
2215 bfd_h_put_32 (abfd
, cmd
->nextdefsym
, &raw
.nextdefsym
);
2216 bfd_h_put_32 (abfd
, cmd
->iundefsym
, &raw
.iundefsym
);
2217 bfd_h_put_32 (abfd
, cmd
->nundefsym
, &raw
.nundefsym
);
2218 bfd_h_put_32 (abfd
, cmd
->tocoff
, &raw
.tocoff
);
2219 bfd_h_put_32 (abfd
, cmd
->ntoc
, &raw
.ntoc
);
2220 bfd_h_put_32 (abfd
, cmd
->modtaboff
, &raw
.modtaboff
);
2221 bfd_h_put_32 (abfd
, cmd
->nmodtab
, &raw
.nmodtab
);
2222 bfd_h_put_32 (abfd
, cmd
->extrefsymoff
, &raw
.extrefsymoff
);
2223 bfd_h_put_32 (abfd
, cmd
->nextrefsyms
, &raw
.nextrefsyms
);
2224 bfd_h_put_32 (abfd
, cmd
->indirectsymoff
, &raw
.indirectsymoff
);
2225 bfd_h_put_32 (abfd
, cmd
->nindirectsyms
, &raw
.nindirectsyms
);
2226 bfd_h_put_32 (abfd
, cmd
->extreloff
, &raw
.extreloff
);
2227 bfd_h_put_32 (abfd
, cmd
->nextrel
, &raw
.nextrel
);
2228 bfd_h_put_32 (abfd
, cmd
->locreloff
, &raw
.locreloff
);
2229 bfd_h_put_32 (abfd
, cmd
->nlocrel
, &raw
.nlocrel
);
2231 if (bfd_bwrite (&raw
, sizeof (raw
), abfd
) != sizeof (raw
))
2239 bfd_mach_o_primary_symbol_sort_key (bfd_mach_o_asymbol
*s
)
2241 unsigned mtyp
= s
->n_type
& BFD_MACH_O_N_TYPE
;
2243 /* Just leave debug symbols where they are (pretend they are local, and
2244 then they will just be sorted on position). */
2245 if (s
->n_type
& BFD_MACH_O_N_STAB
)
2248 /* Local (we should never see an undefined local AFAICT). */
2249 if (! (s
->n_type
& (BFD_MACH_O_N_EXT
| BFD_MACH_O_N_PEXT
)))
2252 /* Common symbols look like undefined externs. */
2253 if (mtyp
== BFD_MACH_O_N_UNDF
)
2256 /* A defined non-local, non-debug symbol. */
2261 bfd_mach_o_cf_symbols (const void *a
, const void *b
)
2263 bfd_mach_o_asymbol
*sa
= *(bfd_mach_o_asymbol
**) a
;
2264 bfd_mach_o_asymbol
*sb
= *(bfd_mach_o_asymbol
**) b
;
2265 unsigned int soa
, sob
;
2267 soa
= bfd_mach_o_primary_symbol_sort_key (sa
);
2268 sob
= bfd_mach_o_primary_symbol_sort_key (sb
);
2275 /* If it's local or stab, just preserve the input order. */
2278 if (sa
->symbol
.udata
.i
< sb
->symbol
.udata
.i
)
2280 if (sa
->symbol
.udata
.i
> sb
->symbol
.udata
.i
)
2283 /* This is probably an error. */
2287 /* The second sort key is name. */
2288 return strcmp (sa
->symbol
.name
, sb
->symbol
.name
);
2291 /* Process the symbols.
2293 This should be OK for single-module files - but it is not likely to work
2294 for multi-module shared libraries.
2296 (a) If the application has not filled in the relevant mach-o fields, make
2299 (b) Order them, like this:
2302 ( ii) external defined
2304 (iii) external undefined/common
2311 bfd_mach_o_mangle_symbols (bfd
*abfd
)
2314 asymbol
**symbols
= bfd_get_outsymbols (abfd
);
2316 if (symbols
== NULL
|| bfd_get_symcount (abfd
) == 0)
2319 for (i
= 0; i
< bfd_get_symcount (abfd
); i
++)
2321 bfd_mach_o_asymbol
*s
= (bfd_mach_o_asymbol
*)symbols
[i
];
2323 /* We use this value, which is out-of-range as a symbol index, to signal
2324 that the mach-o-specific data are not filled in and need to be created
2325 from the bfd values. It is much preferable for the application to do
2326 this, since more meaningful diagnostics can be made that way. */
2328 if (s
->symbol
.udata
.i
== SYM_MACHO_FIELDS_UNSET
)
2330 /* No symbol information has been set - therefore determine
2331 it from the bfd symbol flags/info. */
2332 if (s
->symbol
.section
== bfd_abs_section_ptr
)
2333 s
->n_type
= BFD_MACH_O_N_ABS
;
2334 else if (s
->symbol
.section
== bfd_und_section_ptr
)
2336 s
->n_type
= BFD_MACH_O_N_UNDF
;
2337 if (s
->symbol
.flags
& BSF_WEAK
)
2338 s
->n_desc
|= BFD_MACH_O_N_WEAK_REF
;
2339 /* mach-o automatically makes undefined symbols extern. */
2340 s
->n_type
|= BFD_MACH_O_N_EXT
;
2341 s
->symbol
.flags
|= BSF_GLOBAL
;
2343 else if (s
->symbol
.section
== bfd_com_section_ptr
)
2345 s
->n_type
= BFD_MACH_O_N_UNDF
| BFD_MACH_O_N_EXT
;
2346 s
->symbol
.flags
|= BSF_GLOBAL
;
2349 s
->n_type
= BFD_MACH_O_N_SECT
;
2351 if (s
->symbol
.flags
& BSF_GLOBAL
)
2352 s
->n_type
|= BFD_MACH_O_N_EXT
;
2355 /* Put the section index in, where required. */
2356 if ((s
->symbol
.section
!= bfd_abs_section_ptr
2357 && s
->symbol
.section
!= bfd_und_section_ptr
2358 && s
->symbol
.section
!= bfd_com_section_ptr
)
2359 || ((s
->n_type
& BFD_MACH_O_N_STAB
) != 0
2360 && s
->symbol
.name
== NULL
))
2361 s
->n_sect
= s
->symbol
.section
->output_section
->target_index
;
2363 /* Number to preserve order for local and debug syms. */
2364 s
->symbol
.udata
.i
= i
;
2367 /* Sort the symbols. */
2368 qsort ((void *) symbols
, (size_t) bfd_get_symcount (abfd
),
2369 sizeof (asymbol
*), bfd_mach_o_cf_symbols
);
2371 for (i
= 0; i
< bfd_get_symcount (abfd
); ++i
)
2373 bfd_mach_o_asymbol
*s
= (bfd_mach_o_asymbol
*)symbols
[i
];
2374 s
->symbol
.udata
.i
= i
; /* renumber. */
2380 /* We build a flat table of sections, which can be re-ordered if necessary.
2381 Fill in the section number and other mach-o-specific data. */
2384 bfd_mach_o_mangle_sections (bfd
*abfd
, bfd_mach_o_data_struct
*mdata
)
2387 unsigned target_index
;
2390 nsect
= bfd_count_sections (abfd
);
2392 /* Don't do it if it's already set - assume the application knows what it's
2394 if (mdata
->nsects
== nsect
2395 && (mdata
->nsects
== 0 || mdata
->sections
!= NULL
))
2398 /* We need to check that this can be done... */
2401 (*_bfd_error_handler
) (_("mach-o: there are too many sections (%u)"
2402 " maximum is 255,\n"), nsect
);
2406 mdata
->nsects
= nsect
;
2407 mdata
->sections
= bfd_alloc2 (abfd
,
2408 mdata
->nsects
, sizeof (bfd_mach_o_section
*));
2409 if (mdata
->sections
== NULL
)
2412 /* Create Mach-O sections.
2413 Section type, attribute and align should have been set when the
2414 section was created - either read in or specified. */
2416 for (sec
= abfd
->sections
; sec
; sec
= sec
->next
)
2418 unsigned bfd_align
= bfd_get_section_alignment (abfd
, sec
);
2419 bfd_mach_o_section
*msect
= bfd_mach_o_get_mach_o_section (sec
);
2421 mdata
->sections
[target_index
] = msect
;
2423 msect
->addr
= bfd_get_section_vma (abfd
, sec
);
2424 msect
->size
= bfd_get_section_size (sec
);
2426 /* Use the largest alignment set, in case it was bumped after the
2427 section was created. */
2428 msect
->align
= msect
->align
> bfd_align
? msect
->align
: bfd_align
;
2431 sec
->target_index
= ++target_index
;
2438 bfd_mach_o_write_contents (bfd
*abfd
)
2440 bfd_mach_o_data_struct
*mdata
= bfd_mach_o_get_data (abfd
);
2441 bfd_mach_o_load_command
*cmd
;
2442 bfd_mach_o_symtab_command
*symtab
= NULL
;
2443 bfd_mach_o_dysymtab_command
*dysymtab
= NULL
;
2444 bfd_mach_o_segment_command
*linkedit
= NULL
;
2446 /* Make the commands, if not already present. */
2447 if (!abfd
->output_has_begun
&& !bfd_mach_o_build_commands (abfd
))
2449 abfd
->output_has_begun
= TRUE
;
2451 /* Write the header. */
2452 if (!bfd_mach_o_write_header (abfd
, &mdata
->header
))
2455 /* First pass: allocate the linkedit segment. */
2456 for (cmd
= mdata
->first_command
; cmd
!= NULL
; cmd
= cmd
->next
)
2459 case BFD_MACH_O_LC_SEGMENT_64
:
2460 case BFD_MACH_O_LC_SEGMENT
:
2461 if (strcmp (cmd
->command
.segment
.segname
, "__LINKEDIT") == 0)
2462 linkedit
= &cmd
->command
.segment
;
2464 case BFD_MACH_O_LC_SYMTAB
:
2465 symtab
= &cmd
->command
.symtab
;
2467 case BFD_MACH_O_LC_DYSYMTAB
:
2468 dysymtab
= &cmd
->command
.dysymtab
;
2470 case BFD_MACH_O_LC_DYLD_INFO
:
2472 bfd_mach_o_dyld_info_command
*di
= &cmd
->command
.dyld_info
;
2474 if (di
->rebase_size
!= 0)
2476 di
->rebase_off
= mdata
->filelen
;
2477 mdata
->filelen
+= di
->rebase_size
;
2479 if (di
->bind_size
!= 0)
2481 di
->bind_off
= mdata
->filelen
;
2482 mdata
->filelen
+= di
->bind_size
;
2484 if (di
->weak_bind_size
!= 0)
2486 di
->weak_bind_off
= mdata
->filelen
;
2487 mdata
->filelen
+= di
->weak_bind_size
;
2489 if (di
->lazy_bind_size
!= 0)
2491 di
->lazy_bind_off
= mdata
->filelen
;
2492 mdata
->filelen
+= di
->lazy_bind_size
;
2494 if (di
->export_size
!= 0)
2496 di
->export_off
= mdata
->filelen
;
2497 mdata
->filelen
+= di
->export_size
;
2501 case BFD_MACH_O_LC_LOAD_DYLIB
:
2502 case BFD_MACH_O_LC_LOAD_DYLINKER
:
2503 case BFD_MACH_O_LC_MAIN
:
2504 /* Nothing to do. */
2507 (*_bfd_error_handler
)
2508 (_("unable to allocate data for load command 0x%lx"),
2509 (unsigned long) cmd
->type
);
2513 /* Specially handle symtab and dysymtab. */
2515 /* Pre-allocate the symbol table (but not the string table). The reason
2516 is that the dysymtab is after the symbol table but before the string
2517 table (required by the native strip tool). */
2520 unsigned int symlen
;
2521 unsigned int wide
= bfd_mach_o_wide_p (abfd
);
2523 symlen
= wide
? BFD_MACH_O_NLIST_64_SIZE
: BFD_MACH_O_NLIST_SIZE
;
2525 /* Align for symbols. */
2526 mdata
->filelen
= FILE_ALIGN (mdata
->filelen
, wide
? 3 : 2);
2527 symtab
->symoff
= mdata
->filelen
;
2529 symtab
->nsyms
= bfd_get_symcount (abfd
);
2530 mdata
->filelen
+= symtab
->nsyms
* symlen
;
2533 /* Build the dysymtab. */
2534 if (dysymtab
!= NULL
)
2535 if (!bfd_mach_o_build_dysymtab (abfd
, dysymtab
))
2538 /* Write symtab and strtab. */
2540 if (!bfd_mach_o_write_symtab_content (abfd
, symtab
))
2543 /* Adjust linkedit size. */
2544 if (linkedit
!= NULL
)
2546 /* bfd_vma pagemask = bfd_mach_o_get_backend_data (abfd)->page_size - 1; */
2548 linkedit
->vmsize
= mdata
->filelen
- linkedit
->fileoff
;
2549 /* linkedit->vmsize = (linkedit->vmsize + pagemask) & ~pagemask; */
2550 linkedit
->filesize
= mdata
->filelen
- linkedit
->fileoff
;
2552 linkedit
->initprot
= BFD_MACH_O_PROT_READ
;
2553 linkedit
->maxprot
= BFD_MACH_O_PROT_READ
| BFD_MACH_O_PROT_WRITE
2554 | BFD_MACH_O_PROT_EXECUTE
;
2557 /* Second pass: write commands. */
2558 for (cmd
= mdata
->first_command
; cmd
!= NULL
; cmd
= cmd
->next
)
2560 struct mach_o_load_command_external raw
;
2561 unsigned long typeflag
;
2563 typeflag
= cmd
->type
| (cmd
->type_required
? BFD_MACH_O_LC_REQ_DYLD
: 0);
2565 bfd_h_put_32 (abfd
, typeflag
, raw
.cmd
);
2566 bfd_h_put_32 (abfd
, cmd
->len
, raw
.cmdsize
);
2568 if (bfd_seek (abfd
, cmd
->offset
, SEEK_SET
) != 0
2569 || bfd_bwrite (&raw
, BFD_MACH_O_LC_SIZE
, abfd
) != 8)
2574 case BFD_MACH_O_LC_SEGMENT
:
2575 if (!bfd_mach_o_write_segment_32 (abfd
, cmd
))
2578 case BFD_MACH_O_LC_SEGMENT_64
:
2579 if (!bfd_mach_o_write_segment_64 (abfd
, cmd
))
2582 case BFD_MACH_O_LC_SYMTAB
:
2583 if (!bfd_mach_o_write_symtab (abfd
, cmd
))
2586 case BFD_MACH_O_LC_DYSYMTAB
:
2587 if (!bfd_mach_o_write_dysymtab (abfd
, cmd
))
2590 case BFD_MACH_O_LC_THREAD
:
2591 case BFD_MACH_O_LC_UNIXTHREAD
:
2592 if (!bfd_mach_o_write_thread (abfd
, cmd
))
2595 case BFD_MACH_O_LC_LOAD_DYLIB
:
2596 if (!bfd_mach_o_write_dylib (abfd
, cmd
))
2599 case BFD_MACH_O_LC_LOAD_DYLINKER
:
2600 if (!bfd_mach_o_write_dylinker (abfd
, cmd
))
2603 case BFD_MACH_O_LC_MAIN
:
2604 if (!bfd_mach_o_write_main (abfd
, cmd
))
2607 case BFD_MACH_O_LC_DYLD_INFO
:
2608 if (!bfd_mach_o_write_dyld_info (abfd
, cmd
))
2612 (*_bfd_error_handler
)
2613 (_("unable to write unknown load command 0x%lx"),
2614 (unsigned long) cmd
->type
);
2623 bfd_mach_o_append_section_to_segment (bfd_mach_o_segment_command
*seg
,
2624 bfd_mach_o_section
*s
)
2626 if (seg
->sect_head
== NULL
)
2629 seg
->sect_tail
->next
= s
;
2633 /* Create section Mach-O flags from BFD flags. */
2636 bfd_mach_o_set_section_flags_from_bfd (bfd
*abfd ATTRIBUTE_UNUSED
,
2640 bfd_mach_o_section
*s
= bfd_mach_o_get_mach_o_section (sec
);
2642 /* Create default flags. */
2643 bfd_flags
= bfd_get_section_flags (abfd
, sec
);
2644 if ((bfd_flags
& SEC_CODE
) == SEC_CODE
)
2645 s
->flags
= BFD_MACH_O_S_ATTR_PURE_INSTRUCTIONS
2646 | BFD_MACH_O_S_ATTR_SOME_INSTRUCTIONS
2647 | BFD_MACH_O_S_REGULAR
;
2648 else if ((bfd_flags
& (SEC_ALLOC
| SEC_LOAD
)) == SEC_ALLOC
)
2649 s
->flags
= BFD_MACH_O_S_ZEROFILL
;
2650 else if (bfd_flags
& SEC_DEBUGGING
)
2651 s
->flags
= BFD_MACH_O_S_REGULAR
| BFD_MACH_O_S_ATTR_DEBUG
;
2653 s
->flags
= BFD_MACH_O_S_REGULAR
;
2657 bfd_mach_o_build_obj_seg_command (bfd
*abfd
, bfd_mach_o_segment_command
*seg
)
2659 bfd_mach_o_data_struct
*mdata
= bfd_mach_o_get_data (abfd
);
2663 seg
->fileoff
= mdata
->filelen
;
2664 seg
->initprot
= BFD_MACH_O_PROT_READ
| BFD_MACH_O_PROT_WRITE
2665 | BFD_MACH_O_PROT_EXECUTE
;
2666 seg
->maxprot
= seg
->initprot
;
2668 /* Append sections to the segment.
2670 This is a little tedious, we have to honor the need to account zerofill
2671 sections after all the rest. This forces us to do the calculation of
2672 total vmsize in three passes so that any alignment increments are
2673 properly accounted. */
2674 for (i
= 0; i
< mdata
->nsects
; ++i
)
2676 bfd_mach_o_section
*s
= mdata
->sections
[i
];
2677 asection
*sec
= s
->bfdsection
;
2679 /* Although we account for zerofill section sizes in vm order, they are
2680 placed in the file in source sequence. */
2681 bfd_mach_o_append_section_to_segment (seg
, s
);
2684 /* Zerofill sections have zero file size & offset, the only content
2685 written to the file is the symbols. */
2686 if ((s
->flags
& BFD_MACH_O_SECTION_TYPE_MASK
) == BFD_MACH_O_S_ZEROFILL
2687 || ((s
->flags
& BFD_MACH_O_SECTION_TYPE_MASK
)
2688 == BFD_MACH_O_S_GB_ZEROFILL
))
2691 /* The Darwin system tools (in MH_OBJECT files, at least) always account
2692 sections, even those with zero size. */
2695 seg
->vmsize
= FILE_ALIGN (seg
->vmsize
, s
->align
);
2696 seg
->vmsize
+= s
->size
;
2698 /* MH_OBJECT files have unaligned content. */
2701 seg
->filesize
= FILE_ALIGN (seg
->filesize
, s
->align
);
2702 mdata
->filelen
= FILE_ALIGN (mdata
->filelen
, s
->align
);
2704 seg
->filesize
+= s
->size
;
2706 /* The system tools write even zero-sized sections with an offset
2707 field set to the current file position. */
2708 s
->offset
= mdata
->filelen
;
2711 sec
->filepos
= s
->offset
;
2712 mdata
->filelen
+= s
->size
;
2715 /* Now pass through again, for zerofill, only now we just update the
2716 vmsize, and then for zerofill_GB. */
2717 for (j
= 0; j
< 2; j
++)
2722 stype
= BFD_MACH_O_S_ZEROFILL
;
2724 stype
= BFD_MACH_O_S_GB_ZEROFILL
;
2726 for (i
= 0; i
< mdata
->nsects
; ++i
)
2728 bfd_mach_o_section
*s
= mdata
->sections
[i
];
2730 if ((s
->flags
& BFD_MACH_O_SECTION_TYPE_MASK
) != stype
)
2735 seg
->vmsize
= FILE_ALIGN (seg
->vmsize
, s
->align
);
2736 seg
->vmsize
+= s
->size
;
2741 /* Allocate space for the relocations. */
2742 mdata
->filelen
= FILE_ALIGN (mdata
->filelen
, 2);
2744 for (i
= 0; i
< mdata
->nsects
; ++i
)
2746 bfd_mach_o_section
*ms
= mdata
->sections
[i
];
2747 asection
*sec
= ms
->bfdsection
;
2749 ms
->nreloc
= sec
->reloc_count
;
2750 if (ms
->nreloc
== 0)
2752 /* Clear nreloc and reloff if there is no relocs. */
2756 sec
->rel_filepos
= mdata
->filelen
;
2757 ms
->reloff
= sec
->rel_filepos
;
2758 mdata
->filelen
+= sec
->reloc_count
* BFD_MACH_O_RELENT_SIZE
;
2765 bfd_mach_o_build_exec_seg_command (bfd
*abfd
, bfd_mach_o_segment_command
*seg
)
2767 bfd_mach_o_data_struct
*mdata
= bfd_mach_o_get_data (abfd
);
2769 bfd_vma pagemask
= bfd_mach_o_get_backend_data (abfd
)->page_size
- 1;
2771 bfd_mach_o_section
*s
;
2775 seg
->fileoff
= mdata
->filelen
;
2780 /* Append sections to the segment. We assume they are properly ordered
2781 by vma (but we check that). */
2783 for (i
= 0; i
< mdata
->nsects
; ++i
)
2785 s
= mdata
->sections
[i
];
2787 /* Consider only sections for this segment. */
2788 if (strcmp (seg
->segname
, s
->segname
) != 0)
2791 bfd_mach_o_append_section_to_segment (seg
, s
);
2795 (*_bfd_error_handler
)
2796 (_("section address (%lx) below start of segment (%lx)"),
2797 (unsigned long) s
->addr
, (unsigned long) vma
);
2801 vma
= s
->addr
+ s
->size
;
2804 /* Set segment file offset: make it page aligned. */
2805 vma
= seg
->sect_head
->addr
;
2806 seg
->vmaddr
= vma
& ~pagemask
;
2807 if ((mdata
->filelen
& pagemask
) > (vma
& pagemask
))
2808 mdata
->filelen
+= pagemask
+ 1;
2809 seg
->fileoff
= mdata
->filelen
& ~pagemask
;
2810 mdata
->filelen
= seg
->fileoff
+ (vma
& pagemask
);
2812 /* Set section file offset. */
2813 for (s
= seg
->sect_head
; s
!= NULL
; s
= s
->next
)
2815 asection
*sec
= s
->bfdsection
;
2816 flagword flags
= bfd_get_section_flags (abfd
, sec
);
2818 /* Adjust segment size. */
2819 seg
->vmsize
= FILE_ALIGN (seg
->vmsize
, s
->align
);
2820 seg
->vmsize
+= s
->size
;
2822 /* File offset and length. */
2823 seg
->filesize
= FILE_ALIGN (seg
->filesize
, s
->align
);
2825 if ((s
->flags
& BFD_MACH_O_SECTION_TYPE_MASK
) != BFD_MACH_O_S_ZEROFILL
2826 && ((s
->flags
& BFD_MACH_O_SECTION_TYPE_MASK
)
2827 != BFD_MACH_O_S_GB_ZEROFILL
))
2829 mdata
->filelen
= FILE_ALIGN (mdata
->filelen
, s
->align
);
2831 s
->offset
= mdata
->filelen
;
2832 s
->bfdsection
->filepos
= s
->offset
;
2834 seg
->filesize
+= s
->size
;
2835 mdata
->filelen
+= s
->size
;
2840 s
->bfdsection
->filepos
= 0;
2843 /* Set protection. */
2844 if (flags
& SEC_LOAD
)
2846 if (flags
& SEC_CODE
)
2847 seg
->initprot
|= BFD_MACH_O_PROT_READ
| BFD_MACH_O_PROT_EXECUTE
;
2848 if ((flags
& (SEC_DATA
| SEC_READONLY
)) == SEC_DATA
)
2849 seg
->initprot
|= BFD_MACH_O_PROT_WRITE
| BFD_MACH_O_PROT_READ
;
2852 /* Relocs shouldn't appear in non-object files. */
2853 if (s
->bfdsection
->reloc_count
!= 0)
2858 if (seg
->initprot
!= 0)
2859 seg
->maxprot
= BFD_MACH_O_PROT_READ
| BFD_MACH_O_PROT_WRITE
2860 | BFD_MACH_O_PROT_EXECUTE
;
2864 /* Round segment size (and file size). */
2865 seg
->vmsize
= (seg
->vmsize
+ pagemask
) & ~pagemask
;
2866 seg
->filesize
= (seg
->filesize
+ pagemask
) & ~pagemask
;
2867 mdata
->filelen
= (mdata
->filelen
+ pagemask
) & ~pagemask
;
2872 /* Layout the commands: set commands size and offset, set ncmds and sizeofcmds
2873 fields in header. */
2876 bfd_mach_o_layout_commands (bfd_mach_o_data_struct
*mdata
)
2878 unsigned wide
= mach_o_wide_p (&mdata
->header
);
2879 unsigned int hdrlen
;
2881 bfd_mach_o_load_command
*cmd
;
2883 bfd_boolean ret
= TRUE
;
2885 hdrlen
= wide
? BFD_MACH_O_HEADER_64_SIZE
: BFD_MACH_O_HEADER_SIZE
;
2886 align
= wide
? 8 - 1 : 4 - 1;
2888 mdata
->header
.ncmds
= 0;
2890 for (cmd
= mdata
->first_command
; cmd
; cmd
= cmd
->next
)
2892 mdata
->header
.ncmds
++;
2893 cmd
->offset
= offset
;
2897 case BFD_MACH_O_LC_SEGMENT_64
:
2898 cmd
->len
= BFD_MACH_O_LC_SEGMENT_64_SIZE
2899 + BFD_MACH_O_SECTION_64_SIZE
* cmd
->command
.segment
.nsects
;
2901 case BFD_MACH_O_LC_SEGMENT
:
2902 cmd
->len
= BFD_MACH_O_LC_SEGMENT_SIZE
2903 + BFD_MACH_O_SECTION_SIZE
* cmd
->command
.segment
.nsects
;
2905 case BFD_MACH_O_LC_SYMTAB
:
2906 cmd
->len
= sizeof (struct mach_o_symtab_command_external
)
2907 + BFD_MACH_O_LC_SIZE
;
2909 case BFD_MACH_O_LC_DYSYMTAB
:
2910 cmd
->len
= sizeof (struct mach_o_dysymtab_command_external
)
2911 + BFD_MACH_O_LC_SIZE
;
2913 case BFD_MACH_O_LC_LOAD_DYLIB
:
2914 cmd
->len
= sizeof (struct mach_o_dylib_command_external
)
2915 + BFD_MACH_O_LC_SIZE
;
2916 cmd
->command
.dylib
.name_offset
= cmd
->len
;
2917 cmd
->len
+= strlen (cmd
->command
.dylib
.name_str
);
2918 cmd
->len
= (cmd
->len
+ align
) & ~align
;
2920 case BFD_MACH_O_LC_LOAD_DYLINKER
:
2921 cmd
->len
= sizeof (struct mach_o_str_command_external
)
2922 + BFD_MACH_O_LC_SIZE
;
2923 cmd
->command
.dylinker
.name_offset
= cmd
->len
;
2924 cmd
->len
+= strlen (cmd
->command
.dylinker
.name_str
);
2925 cmd
->len
= (cmd
->len
+ align
) & ~align
;
2927 case BFD_MACH_O_LC_MAIN
:
2928 cmd
->len
= sizeof (struct mach_o_entry_point_command_external
)
2929 + BFD_MACH_O_LC_SIZE
;
2931 case BFD_MACH_O_LC_DYLD_INFO
:
2932 cmd
->len
= sizeof (struct mach_o_dyld_info_command_external
)
2933 + BFD_MACH_O_LC_SIZE
;
2936 (*_bfd_error_handler
)
2937 (_("unable to layout unknown load command 0x%lx"),
2938 (unsigned long) cmd
->type
);
2943 BFD_ASSERT (cmd
->len
% (align
+ 1) == 0);
2946 mdata
->header
.sizeofcmds
= offset
- hdrlen
;
2947 mdata
->filelen
= offset
;
2952 /* Subroutine of bfd_mach_o_build_commands: set type, name and nsects of a
2956 bfd_mach_o_init_segment (bfd_mach_o_data_struct
*mdata
,
2957 bfd_mach_o_load_command
*cmd
,
2958 const char *segname
, unsigned int nbr_sect
)
2960 bfd_mach_o_segment_command
*seg
= &cmd
->command
.segment
;
2961 unsigned wide
= mach_o_wide_p (&mdata
->header
);
2963 /* Init segment command. */
2964 cmd
->type
= wide
? BFD_MACH_O_LC_SEGMENT_64
: BFD_MACH_O_LC_SEGMENT
;
2965 cmd
->type_required
= FALSE
;
2967 strcpy (seg
->segname
, segname
);
2968 seg
->nsects
= nbr_sect
;
2978 seg
->sect_head
= NULL
;
2979 seg
->sect_tail
= NULL
;
2982 /* Build Mach-O load commands (currently assuming an MH_OBJECT file).
2983 TODO: Other file formats, rebuilding symtab/dysymtab commands for strip
2984 and copy functionality. */
2987 bfd_mach_o_build_commands (bfd
*abfd
)
2989 bfd_mach_o_data_struct
*mdata
= bfd_mach_o_get_data (abfd
);
2990 unsigned wide
= mach_o_wide_p (&mdata
->header
);
2991 unsigned int nbr_segcmd
= 0;
2992 bfd_mach_o_load_command
*commands
;
2993 unsigned int nbr_commands
;
2994 int symtab_idx
= -1;
2995 int dysymtab_idx
= -1;
2999 /* Return now if already built. */
3000 if (mdata
->header
.ncmds
!= 0)
3003 /* Fill in the file type, if not already set. */
3004 if (mdata
->header
.filetype
== 0)
3006 if (abfd
->flags
& EXEC_P
)
3007 mdata
->header
.filetype
= BFD_MACH_O_MH_EXECUTE
;
3008 else if (abfd
->flags
& DYNAMIC
)
3009 mdata
->header
.filetype
= BFD_MACH_O_MH_DYLIB
;
3011 mdata
->header
.filetype
= BFD_MACH_O_MH_OBJECT
;
3014 /* If hasn't already been done, flatten sections list, and sort
3015 if/when required. Must be done before the symbol table is adjusted,
3016 since that depends on properly numbered sections. */
3017 if (mdata
->nsects
== 0 || mdata
->sections
== NULL
)
3018 if (! bfd_mach_o_mangle_sections (abfd
, mdata
))
3021 /* Order the symbol table, fill-in/check mach-o specific fields and
3022 partition out any indirect symbols. */
3023 if (!bfd_mach_o_mangle_symbols (abfd
))
3026 /* Segment commands. */
3027 if (mdata
->header
.filetype
== BFD_MACH_O_MH_OBJECT
)
3029 /* Only one segment for all the sections. But the segment is
3030 optional if there is no sections. */
3031 nbr_segcmd
= (mdata
->nsects
> 0) ? 1 : 0;
3035 bfd_mach_o_section
*prev_sect
= NULL
;
3037 /* One pagezero segment and one linkedit segment. */
3040 /* Create one segment for associated segment name in sections.
3041 Assume that sections with the same segment name are consecutive. */
3042 for (i
= 0; i
< mdata
->nsects
; i
++)
3044 bfd_mach_o_section
*this_sect
= mdata
->sections
[i
];
3046 if (prev_sect
== NULL
3047 || strcmp (prev_sect
->segname
, this_sect
->segname
) != 0)
3050 prev_sect
= this_sect
;
3055 nbr_commands
= nbr_segcmd
;
3057 /* One command for the symbol table (only if there are symbols. */
3058 if (bfd_get_symcount (abfd
) > 0)
3059 symtab_idx
= nbr_commands
++;
3062 This is a rather crude test for whether we should build a dysymtab. */
3063 if (bfd_mach_o_should_emit_dysymtab ()
3064 && bfd_get_symcount (abfd
))
3066 /* If there should be a case where a dysymtab could be emitted without
3067 a symtab (seems improbable), this would need amending. */
3068 dysymtab_idx
= nbr_commands
++;
3071 /* Add an entry point command. */
3072 if (mdata
->header
.filetype
== BFD_MACH_O_MH_EXECUTE
3073 && bfd_get_start_address (abfd
) != 0)
3074 main_idx
= nbr_commands
++;
3076 /* Well, we must have a header, at least. */
3077 mdata
->filelen
= wide
? BFD_MACH_O_HEADER_64_SIZE
: BFD_MACH_O_HEADER_SIZE
;
3079 /* A bit unusual, but no content is valid;
3080 as -n empty.s -o empty.o */
3081 if (nbr_commands
== 0)
3083 /* Layout commands (well none...) and set headers command fields. */
3084 return bfd_mach_o_layout_commands (mdata
);
3087 /* Create commands for segments (and symtabs), prepend them. */
3088 commands
= bfd_zalloc (abfd
, nbr_commands
* sizeof (bfd_mach_o_load_command
));
3089 if (commands
== NULL
)
3091 for (i
= 0; i
< nbr_commands
- 1; i
++)
3092 commands
[i
].next
= &commands
[i
+ 1];
3093 commands
[nbr_commands
- 1].next
= mdata
->first_command
;
3094 if (mdata
->first_command
== NULL
)
3095 mdata
->last_command
= &commands
[nbr_commands
- 1];
3096 mdata
->first_command
= &commands
[0];
3098 if (mdata
->header
.filetype
== BFD_MACH_O_MH_OBJECT
&& nbr_segcmd
!= 0)
3100 /* For object file, there is only one segment. */
3101 bfd_mach_o_init_segment (mdata
, &commands
[0], "", mdata
->nsects
);
3103 else if (nbr_segcmd
!= 0)
3105 bfd_mach_o_load_command
*cmd
;
3107 BFD_ASSERT (nbr_segcmd
>= 2);
3111 bfd_mach_o_init_segment (mdata
, cmd
, "__PAGEZERO", 0);
3113 /* Segments from sections. */
3115 for (i
= 0; i
< mdata
->nsects
;)
3117 const char *segname
= mdata
->sections
[i
]->segname
;
3118 unsigned int nbr_sect
= 1;
3120 /* Count number of sections for this segment. */
3121 for (i
++; i
< mdata
->nsects
; i
++)
3122 if (strcmp (mdata
->sections
[i
]->segname
, segname
) == 0)
3127 bfd_mach_o_init_segment (mdata
, cmd
, segname
, nbr_sect
);
3132 bfd_mach_o_init_segment (mdata
, cmd
, "__LINKEDIT", 0);
3135 if (symtab_idx
>= 0)
3137 /* Init symtab command. */
3138 bfd_mach_o_load_command
*cmd
= &commands
[symtab_idx
];
3140 cmd
->type
= BFD_MACH_O_LC_SYMTAB
;
3141 cmd
->type_required
= FALSE
;
3144 /* If required, setup symtab command, see comment above about the quality
3146 if (dysymtab_idx
>= 0)
3148 bfd_mach_o_load_command
*cmd
= &commands
[dysymtab_idx
];
3150 cmd
->type
= BFD_MACH_O_LC_DYSYMTAB
;
3151 cmd
->type_required
= FALSE
;
3154 /* Create the main command. */
3157 bfd_mach_o_load_command
*cmd
= &commands
[main_idx
];
3159 cmd
->type
= BFD_MACH_O_LC_MAIN
;
3160 cmd
->type_required
= TRUE
;
3162 cmd
->command
.main
.entryoff
= 0;
3163 cmd
->command
.main
.stacksize
= 0;
3166 /* Layout commands. */
3167 if (! bfd_mach_o_layout_commands (mdata
))
3170 /* So, now we have sized the commands and the filelen set to that.
3171 Now we can build the segment command and set the section file offsets. */
3172 if (mdata
->header
.filetype
== BFD_MACH_O_MH_OBJECT
)
3174 for (i
= 0; i
< nbr_segcmd
; i
++)
3175 if (!bfd_mach_o_build_obj_seg_command
3176 (abfd
, &commands
[i
].command
.segment
))
3183 /* Skip pagezero and linkedit segments. */
3184 for (i
= 1; i
< nbr_segcmd
- 1; i
++)
3186 bfd_mach_o_segment_command
*seg
= &commands
[i
].command
.segment
;
3188 if (!bfd_mach_o_build_exec_seg_command (abfd
, seg
))
3191 if (seg
->vmaddr
+ seg
->vmsize
> maxvma
)
3192 maxvma
= seg
->vmaddr
+ seg
->vmsize
;
3195 /* Set the size of __PAGEZERO. */
3196 commands
[0].command
.segment
.vmsize
=
3197 commands
[1].command
.segment
.vmaddr
;
3199 /* Set the vma and fileoff of __LINKEDIT. */
3200 commands
[nbr_segcmd
- 1].command
.segment
.vmaddr
= maxvma
;
3201 commands
[nbr_segcmd
- 1].command
.segment
.fileoff
= mdata
->filelen
;
3203 /* Set entry point (once segments have been laid out). */
3205 commands
[main_idx
].command
.main
.entryoff
=
3206 bfd_get_start_address (abfd
) - commands
[1].command
.segment
.vmaddr
;
3212 /* Set the contents of a section. */
3215 bfd_mach_o_set_section_contents (bfd
*abfd
,
3217 const void * location
,
3219 bfd_size_type count
)
3223 /* Trying to write the first section contents will trigger the creation of
3224 the load commands if they are not already present. */
3225 if (!abfd
->output_has_begun
&& !bfd_mach_o_build_commands (abfd
))
3231 pos
= section
->filepos
+ offset
;
3232 if (bfd_seek (abfd
, pos
, SEEK_SET
) != 0
3233 || bfd_bwrite (location
, count
, abfd
) != count
)
3240 bfd_mach_o_sizeof_headers (bfd
*a ATTRIBUTE_UNUSED
,
3241 struct bfd_link_info
*info ATTRIBUTE_UNUSED
)
3246 /* Make an empty symbol. This is required only because
3247 bfd_make_section_anyway wants to create a symbol for the section. */
3250 bfd_mach_o_make_empty_symbol (bfd
*abfd
)
3252 asymbol
*new_symbol
;
3254 new_symbol
= bfd_zalloc (abfd
, sizeof (bfd_mach_o_asymbol
));
3255 if (new_symbol
== NULL
)
3257 new_symbol
->the_bfd
= abfd
;
3258 new_symbol
->udata
.i
= SYM_MACHO_FIELDS_UNSET
;
3263 bfd_mach_o_read_header (bfd
*abfd
, file_ptr hdr_off
, bfd_mach_o_header
*header
)
3265 struct mach_o_header_external raw
;
3267 bfd_vma (*get32
) (const void *) = NULL
;
3269 /* Just read the magic number. */
3270 if (bfd_seek (abfd
, hdr_off
, SEEK_SET
) != 0
3271 || bfd_bread (raw
.magic
, sizeof (raw
.magic
), abfd
) != 4)
3274 if (bfd_getb32 (raw
.magic
) == BFD_MACH_O_MH_MAGIC
)
3276 header
->byteorder
= BFD_ENDIAN_BIG
;
3277 header
->magic
= BFD_MACH_O_MH_MAGIC
;
3278 header
->version
= 1;
3281 else if (bfd_getl32 (raw
.magic
) == BFD_MACH_O_MH_MAGIC
)
3283 header
->byteorder
= BFD_ENDIAN_LITTLE
;
3284 header
->magic
= BFD_MACH_O_MH_MAGIC
;
3285 header
->version
= 1;
3288 else if (bfd_getb32 (raw
.magic
) == BFD_MACH_O_MH_MAGIC_64
)
3290 header
->byteorder
= BFD_ENDIAN_BIG
;
3291 header
->magic
= BFD_MACH_O_MH_MAGIC_64
;
3292 header
->version
= 2;
3295 else if (bfd_getl32 (raw
.magic
) == BFD_MACH_O_MH_MAGIC_64
)
3297 header
->byteorder
= BFD_ENDIAN_LITTLE
;
3298 header
->magic
= BFD_MACH_O_MH_MAGIC_64
;
3299 header
->version
= 2;
3304 header
->byteorder
= BFD_ENDIAN_UNKNOWN
;
3308 /* Once the size of the header is known, read the full header. */
3309 size
= mach_o_wide_p (header
) ?
3310 BFD_MACH_O_HEADER_64_SIZE
: BFD_MACH_O_HEADER_SIZE
;
3312 if (bfd_seek (abfd
, hdr_off
, SEEK_SET
) != 0
3313 || bfd_bread (&raw
, size
, abfd
) != size
)
3316 header
->cputype
= (*get32
) (raw
.cputype
);
3317 header
->cpusubtype
= (*get32
) (raw
.cpusubtype
);
3318 header
->filetype
= (*get32
) (raw
.filetype
);
3319 header
->ncmds
= (*get32
) (raw
.ncmds
);
3320 header
->sizeofcmds
= (*get32
) (raw
.sizeofcmds
);
3321 header
->flags
= (*get32
) (raw
.flags
);
3323 if (mach_o_wide_p (header
))
3324 header
->reserved
= (*get32
) (raw
.reserved
);
3326 header
->reserved
= 0;
3332 bfd_mach_o_new_section_hook (bfd
*abfd
, asection
*sec
)
3334 bfd_mach_o_section
*s
;
3335 unsigned bfdalign
= bfd_get_section_alignment (abfd
, sec
);
3337 s
= bfd_mach_o_get_mach_o_section (sec
);
3341 static const mach_o_section_name_xlat
* xlat
;
3343 s
= (bfd_mach_o_section
*) bfd_zalloc (abfd
, sizeof (*s
));
3346 sec
->used_by_bfd
= s
;
3347 s
->bfdsection
= sec
;
3349 /* Create the Darwin seg/sect name pair from the bfd name.
3350 If this is a canonical name for which a specific paiting exists
3351 there will also be defined flags, type, attribute and alignment
3353 xlat
= bfd_mach_o_convert_section_name_to_mach_o (abfd
, sec
, s
);
3356 s
->flags
= xlat
->macho_sectype
| xlat
->macho_secattr
;
3357 s
->align
= xlat
->sectalign
> bfdalign
? xlat
->sectalign
3359 (void) bfd_set_section_alignment (abfd
, sec
, s
->align
);
3360 bfd_flags
= bfd_get_section_flags (abfd
, sec
);
3361 if (bfd_flags
== SEC_NO_FLAGS
)
3362 bfd_set_section_flags (abfd
, sec
, xlat
->bfd_flags
);
3365 /* Create default flags. */
3366 bfd_mach_o_set_section_flags_from_bfd (abfd
, sec
);
3369 return _bfd_generic_new_section_hook (abfd
, sec
);
3373 bfd_mach_o_init_section_from_mach_o (bfd
*abfd
, asection
*sec
,
3377 bfd_mach_o_section
*section
;
3379 flags
= bfd_get_section_flags (abfd
, sec
);
3380 section
= bfd_mach_o_get_mach_o_section (sec
);
3382 /* TODO: see if we should use the xlat system for doing this by
3383 preference and fall back to this for unknown sections. */
3385 if (flags
== SEC_NO_FLAGS
)
3387 /* Try to guess flags. */
3388 if (section
->flags
& BFD_MACH_O_S_ATTR_DEBUG
)
3389 flags
= SEC_DEBUGGING
;
3393 if ((section
->flags
& BFD_MACH_O_SECTION_TYPE_MASK
)
3394 != BFD_MACH_O_S_ZEROFILL
)
3397 if (prot
& BFD_MACH_O_PROT_EXECUTE
)
3399 if (prot
& BFD_MACH_O_PROT_WRITE
)
3401 else if (prot
& BFD_MACH_O_PROT_READ
)
3402 flags
|= SEC_READONLY
;
3408 if ((flags
& SEC_DEBUGGING
) == 0)
3412 if (section
->offset
!= 0)
3413 flags
|= SEC_HAS_CONTENTS
;
3414 if (section
->nreloc
!= 0)
3417 bfd_set_section_flags (abfd
, sec
, flags
);
3419 sec
->vma
= section
->addr
;
3420 sec
->lma
= section
->addr
;
3421 sec
->size
= section
->size
;
3422 sec
->filepos
= section
->offset
;
3423 sec
->alignment_power
= section
->align
;
3424 sec
->segment_mark
= 0;
3425 sec
->reloc_count
= section
->nreloc
;
3426 sec
->rel_filepos
= section
->reloff
;
3430 bfd_mach_o_make_bfd_section (bfd
*abfd
,
3431 const unsigned char *segname
,
3432 const unsigned char *sectname
)
3437 bfd_mach_o_convert_section_name_to_bfd
3438 (abfd
, (const char *)segname
, (const char *)sectname
, &sname
, &flags
);
3442 return bfd_make_section_anyway_with_flags (abfd
, sname
, flags
);
3446 bfd_mach_o_read_section_32 (bfd
*abfd
, unsigned long prot
)
3448 struct mach_o_section_32_external raw
;
3450 bfd_mach_o_section
*section
;
3452 if (bfd_bread (&raw
, BFD_MACH_O_SECTION_SIZE
, abfd
)
3453 != BFD_MACH_O_SECTION_SIZE
)
3456 sec
= bfd_mach_o_make_bfd_section (abfd
, raw
.segname
, raw
.sectname
);
3460 section
= bfd_mach_o_get_mach_o_section (sec
);
3461 memcpy (section
->segname
, raw
.segname
, sizeof (raw
.segname
));
3462 section
->segname
[BFD_MACH_O_SEGNAME_SIZE
] = 0;
3463 memcpy (section
->sectname
, raw
.sectname
, sizeof (raw
.sectname
));
3464 section
->sectname
[BFD_MACH_O_SECTNAME_SIZE
] = 0;
3465 section
->addr
= bfd_h_get_32 (abfd
, raw
.addr
);
3466 section
->size
= bfd_h_get_32 (abfd
, raw
.size
);
3467 section
->offset
= bfd_h_get_32 (abfd
, raw
.offset
);
3468 section
->align
= bfd_h_get_32 (abfd
, raw
.align
);
3469 /* PR 17512: file: 0017eb76. */
3470 if (section
->align
> 64)
3472 (*_bfd_error_handler
) (_("bfd_mach_o_read_section_32: overlarge alignment value: 0x%x, using 32 instead"),
3474 section
->align
= 32;
3476 section
->reloff
= bfd_h_get_32 (abfd
, raw
.reloff
);
3477 section
->nreloc
= bfd_h_get_32 (abfd
, raw
.nreloc
);
3478 section
->flags
= bfd_h_get_32 (abfd
, raw
.flags
);
3479 section
->reserved1
= bfd_h_get_32 (abfd
, raw
.reserved1
);
3480 section
->reserved2
= bfd_h_get_32 (abfd
, raw
.reserved2
);
3481 section
->reserved3
= 0;
3483 bfd_mach_o_init_section_from_mach_o (abfd
, sec
, prot
);
3489 bfd_mach_o_read_section_64 (bfd
*abfd
, unsigned long prot
)
3491 struct mach_o_section_64_external raw
;
3493 bfd_mach_o_section
*section
;
3495 if (bfd_bread (&raw
, BFD_MACH_O_SECTION_64_SIZE
, abfd
)
3496 != BFD_MACH_O_SECTION_64_SIZE
)
3499 sec
= bfd_mach_o_make_bfd_section (abfd
, raw
.segname
, raw
.sectname
);
3503 section
= bfd_mach_o_get_mach_o_section (sec
);
3504 memcpy (section
->segname
, raw
.segname
, sizeof (raw
.segname
));
3505 section
->segname
[BFD_MACH_O_SEGNAME_SIZE
] = 0;
3506 memcpy (section
->sectname
, raw
.sectname
, sizeof (raw
.sectname
));
3507 section
->sectname
[BFD_MACH_O_SECTNAME_SIZE
] = 0;
3508 section
->addr
= bfd_h_get_64 (abfd
, raw
.addr
);
3509 section
->size
= bfd_h_get_64 (abfd
, raw
.size
);
3510 section
->offset
= bfd_h_get_32 (abfd
, raw
.offset
);
3511 section
->align
= bfd_h_get_32 (abfd
, raw
.align
);
3512 if (section
->align
> 64)
3514 (*_bfd_error_handler
) (_("bfd_mach_o_read_section_64: overlarge alignment value: 0x%x, using 32 instead"),
3516 section
->align
= 32;
3518 section
->reloff
= bfd_h_get_32 (abfd
, raw
.reloff
);
3519 section
->nreloc
= bfd_h_get_32 (abfd
, raw
.nreloc
);
3520 section
->flags
= bfd_h_get_32 (abfd
, raw
.flags
);
3521 section
->reserved1
= bfd_h_get_32 (abfd
, raw
.reserved1
);
3522 section
->reserved2
= bfd_h_get_32 (abfd
, raw
.reserved2
);
3523 section
->reserved3
= bfd_h_get_32 (abfd
, raw
.reserved3
);
3525 bfd_mach_o_init_section_from_mach_o (abfd
, sec
, prot
);
3531 bfd_mach_o_read_section (bfd
*abfd
, unsigned long prot
, unsigned int wide
)
3534 return bfd_mach_o_read_section_64 (abfd
, prot
);
3536 return bfd_mach_o_read_section_32 (abfd
, prot
);
3540 bfd_mach_o_read_symtab_symbol (bfd
*abfd
,
3541 bfd_mach_o_symtab_command
*sym
,
3542 bfd_mach_o_asymbol
*s
,
3545 bfd_mach_o_data_struct
*mdata
= bfd_mach_o_get_data (abfd
);
3546 unsigned int wide
= mach_o_wide_p (&mdata
->header
);
3547 unsigned int symwidth
=
3548 wide
? BFD_MACH_O_NLIST_64_SIZE
: BFD_MACH_O_NLIST_SIZE
;
3549 unsigned int symoff
= sym
->symoff
+ (i
* symwidth
);
3550 struct mach_o_nlist_64_external raw
;
3551 unsigned char type
= -1;
3552 unsigned char section
= -1;
3554 symvalue value
= -1;
3555 unsigned long stroff
= -1;
3556 unsigned int symtype
= -1;
3558 BFD_ASSERT (sym
->strtab
!= NULL
);
3560 if (bfd_seek (abfd
, symoff
, SEEK_SET
) != 0
3561 || bfd_bread (&raw
, symwidth
, abfd
) != symwidth
)
3563 (*_bfd_error_handler
)
3564 (_("bfd_mach_o_read_symtab_symbol: unable to read %d bytes at %lu"),
3565 symwidth
, (unsigned long) symoff
);
3569 stroff
= bfd_h_get_32 (abfd
, raw
.n_strx
);
3570 type
= bfd_h_get_8 (abfd
, raw
.n_type
);
3571 symtype
= type
& BFD_MACH_O_N_TYPE
;
3572 section
= bfd_h_get_8 (abfd
, raw
.n_sect
);
3573 desc
= bfd_h_get_16 (abfd
, raw
.n_desc
);
3575 value
= bfd_h_get_64 (abfd
, raw
.n_value
);
3577 value
= bfd_h_get_32 (abfd
, raw
.n_value
);
3579 if (stroff
>= sym
->strsize
)
3581 (*_bfd_error_handler
)
3582 (_("bfd_mach_o_read_symtab_symbol: name out of range (%lu >= %lu)"),
3583 (unsigned long) stroff
,
3584 (unsigned long) sym
->strsize
);
3588 s
->symbol
.the_bfd
= abfd
;
3589 s
->symbol
.name
= sym
->strtab
+ stroff
;
3590 s
->symbol
.value
= value
;
3591 s
->symbol
.flags
= 0x0;
3592 s
->symbol
.udata
.i
= i
;
3594 s
->n_sect
= section
;
3597 if (type
& BFD_MACH_O_N_STAB
)
3599 s
->symbol
.flags
|= BSF_DEBUGGING
;
3600 s
->symbol
.section
= bfd_und_section_ptr
;
3612 if ((section
> 0) && (section
<= mdata
->nsects
))
3614 s
->symbol
.section
= mdata
->sections
[section
- 1]->bfdsection
;
3616 s
->symbol
.value
- mdata
->sections
[section
- 1]->addr
;
3623 if (type
& (BFD_MACH_O_N_PEXT
| BFD_MACH_O_N_EXT
))
3624 s
->symbol
.flags
|= BSF_GLOBAL
;
3626 s
->symbol
.flags
|= BSF_LOCAL
;
3630 case BFD_MACH_O_N_UNDF
:
3631 if (type
== (BFD_MACH_O_N_UNDF
| BFD_MACH_O_N_EXT
)
3632 && s
->symbol
.value
!= 0)
3634 /* A common symbol. */
3635 s
->symbol
.section
= bfd_com_section_ptr
;
3636 s
->symbol
.flags
= BSF_NO_FLAGS
;
3640 s
->symbol
.section
= bfd_und_section_ptr
;
3641 if (s
->n_desc
& BFD_MACH_O_N_WEAK_REF
)
3642 s
->symbol
.flags
|= BSF_WEAK
;
3645 case BFD_MACH_O_N_PBUD
:
3646 s
->symbol
.section
= bfd_und_section_ptr
;
3648 case BFD_MACH_O_N_ABS
:
3649 s
->symbol
.section
= bfd_abs_section_ptr
;
3651 case BFD_MACH_O_N_SECT
:
3652 if ((section
> 0) && (section
<= mdata
->nsects
))
3654 s
->symbol
.section
= mdata
->sections
[section
- 1]->bfdsection
;
3656 s
->symbol
.value
- mdata
->sections
[section
- 1]->addr
;
3660 /* Mach-O uses 0 to mean "no section"; not an error. */
3663 (*_bfd_error_handler
) (_("bfd_mach_o_read_symtab_symbol: "
3664 "symbol \"%s\" specified invalid section %d (max %lu): setting to undefined"),
3665 s
->symbol
.name
, section
, mdata
->nsects
);
3667 s
->symbol
.section
= bfd_und_section_ptr
;
3670 case BFD_MACH_O_N_INDR
:
3671 /* FIXME: we don't follow the BFD convention as this indirect symbol
3672 won't be followed by the referenced one. This looks harmless
3673 unless we start using the linker. */
3674 s
->symbol
.flags
|= BSF_INDIRECT
;
3675 s
->symbol
.section
= bfd_ind_section_ptr
;
3676 s
->symbol
.value
= 0;
3679 (*_bfd_error_handler
) (_("bfd_mach_o_read_symtab_symbol: "
3680 "symbol \"%s\" specified invalid type field 0x%x: setting to undefined"),
3681 s
->symbol
.name
, symtype
);
3682 s
->symbol
.section
= bfd_und_section_ptr
;
3691 bfd_mach_o_read_symtab_strtab (bfd
*abfd
)
3693 bfd_mach_o_data_struct
*mdata
= bfd_mach_o_get_data (abfd
);
3694 bfd_mach_o_symtab_command
*sym
= mdata
->symtab
;
3696 /* Fail if there is no symtab. */
3700 /* Success if already loaded. */
3704 if (abfd
->flags
& BFD_IN_MEMORY
)
3706 struct bfd_in_memory
*b
;
3708 b
= (struct bfd_in_memory
*) abfd
->iostream
;
3710 if ((sym
->stroff
+ sym
->strsize
) > b
->size
)
3712 bfd_set_error (bfd_error_file_truncated
);
3715 sym
->strtab
= (char *) b
->buffer
+ sym
->stroff
;
3719 sym
->strtab
= bfd_alloc (abfd
, sym
->strsize
+ 1);
3720 if (sym
->strtab
== NULL
)
3723 if (bfd_seek (abfd
, sym
->stroff
, SEEK_SET
) != 0
3724 || bfd_bread (sym
->strtab
, sym
->strsize
, abfd
) != sym
->strsize
)
3726 /* PR 17512: file: 10888-1609-0.004. */
3727 bfd_release (abfd
, sym
->strtab
);
3729 bfd_set_error (bfd_error_file_truncated
);
3732 /* Zero terminate the string table. */
3733 sym
->strtab
[sym
->strsize
] = 0;
3740 bfd_mach_o_read_symtab_symbols (bfd
*abfd
)
3742 bfd_mach_o_data_struct
*mdata
= bfd_mach_o_get_data (abfd
);
3743 bfd_mach_o_symtab_command
*sym
= mdata
->symtab
;
3746 if (sym
== NULL
|| sym
->symbols
)
3747 /* Return now if there are no symbols or if already loaded. */
3750 sym
->symbols
= bfd_alloc2 (abfd
, sym
->nsyms
, sizeof (bfd_mach_o_asymbol
));
3751 if (sym
->symbols
== NULL
)
3753 (*_bfd_error_handler
) (_("bfd_mach_o_read_symtab_symbols: unable to allocate memory for symbols"));
3758 if (!bfd_mach_o_read_symtab_strtab (abfd
))
3761 for (i
= 0; i
< sym
->nsyms
; i
++)
3762 if (!bfd_mach_o_read_symtab_symbol (abfd
, sym
, &sym
->symbols
[i
], i
))
3768 bfd_release (abfd
, sym
->symbols
);
3769 sym
->symbols
= NULL
;
3775 bfd_mach_o_i386_flavour_string (unsigned int flavour
)
3777 switch ((int) flavour
)
3779 case BFD_MACH_O_x86_THREAD_STATE32
: return "x86_THREAD_STATE32";
3780 case BFD_MACH_O_x86_FLOAT_STATE32
: return "x86_FLOAT_STATE32";
3781 case BFD_MACH_O_x86_EXCEPTION_STATE32
: return "x86_EXCEPTION_STATE32";
3782 case BFD_MACH_O_x86_THREAD_STATE64
: return "x86_THREAD_STATE64";
3783 case BFD_MACH_O_x86_FLOAT_STATE64
: return "x86_FLOAT_STATE64";
3784 case BFD_MACH_O_x86_EXCEPTION_STATE64
: return "x86_EXCEPTION_STATE64";
3785 case BFD_MACH_O_x86_THREAD_STATE
: return "x86_THREAD_STATE";
3786 case BFD_MACH_O_x86_FLOAT_STATE
: return "x86_FLOAT_STATE";
3787 case BFD_MACH_O_x86_EXCEPTION_STATE
: return "x86_EXCEPTION_STATE";
3788 case BFD_MACH_O_x86_DEBUG_STATE32
: return "x86_DEBUG_STATE32";
3789 case BFD_MACH_O_x86_DEBUG_STATE64
: return "x86_DEBUG_STATE64";
3790 case BFD_MACH_O_x86_DEBUG_STATE
: return "x86_DEBUG_STATE";
3791 case BFD_MACH_O_x86_THREAD_STATE_NONE
: return "x86_THREAD_STATE_NONE";
3792 default: return "UNKNOWN";
3797 bfd_mach_o_ppc_flavour_string (unsigned int flavour
)
3799 switch ((int) flavour
)
3801 case BFD_MACH_O_PPC_THREAD_STATE
: return "PPC_THREAD_STATE";
3802 case BFD_MACH_O_PPC_FLOAT_STATE
: return "PPC_FLOAT_STATE";
3803 case BFD_MACH_O_PPC_EXCEPTION_STATE
: return "PPC_EXCEPTION_STATE";
3804 case BFD_MACH_O_PPC_VECTOR_STATE
: return "PPC_VECTOR_STATE";
3805 case BFD_MACH_O_PPC_THREAD_STATE64
: return "PPC_THREAD_STATE64";
3806 case BFD_MACH_O_PPC_EXCEPTION_STATE64
: return "PPC_EXCEPTION_STATE64";
3807 default: return "UNKNOWN";
3812 bfd_mach_o_read_dylinker (bfd
*abfd
, bfd_mach_o_load_command
*command
)
3814 bfd_mach_o_dylinker_command
*cmd
= &command
->command
.dylinker
;
3815 struct mach_o_str_command_external raw
;
3816 unsigned int nameoff
;
3817 unsigned int namelen
;
3819 if (bfd_bread (&raw
, sizeof (raw
), abfd
) != sizeof (raw
))
3822 nameoff
= bfd_h_get_32 (abfd
, raw
.str
);
3824 cmd
->name_offset
= nameoff
;
3825 namelen
= command
->len
- nameoff
;
3826 nameoff
+= command
->offset
;
3827 cmd
->name_str
= bfd_alloc (abfd
, namelen
);
3828 if (cmd
->name_str
== NULL
)
3830 if (bfd_seek (abfd
, nameoff
, SEEK_SET
) != 0
3831 || bfd_bread (cmd
->name_str
, namelen
, abfd
) != namelen
)
3837 bfd_mach_o_read_dylib (bfd
*abfd
, bfd_mach_o_load_command
*command
)
3839 bfd_mach_o_data_struct
*mdata
= bfd_mach_o_get_data (abfd
);
3840 bfd_mach_o_dylib_command
*cmd
= &command
->command
.dylib
;
3841 struct mach_o_dylib_command_external raw
;
3842 unsigned int nameoff
;
3843 unsigned int namelen
;
3845 switch (command
->type
)
3847 case BFD_MACH_O_LC_LOAD_DYLIB
:
3848 case BFD_MACH_O_LC_LAZY_LOAD_DYLIB
:
3849 case BFD_MACH_O_LC_LOAD_WEAK_DYLIB
:
3850 case BFD_MACH_O_LC_ID_DYLIB
:
3851 case BFD_MACH_O_LC_REEXPORT_DYLIB
:
3852 case BFD_MACH_O_LC_LOAD_UPWARD_DYLIB
:
3859 if (bfd_bread (&raw
, sizeof (raw
), abfd
) != sizeof (raw
))
3862 nameoff
= bfd_h_get_32 (abfd
, raw
.name
);
3863 cmd
->timestamp
= bfd_h_get_32 (abfd
, raw
.timestamp
);
3864 cmd
->current_version
= bfd_h_get_32 (abfd
, raw
.current_version
);
3865 cmd
->compatibility_version
= bfd_h_get_32 (abfd
, raw
.compatibility_version
);
3867 cmd
->name_offset
= command
->offset
+ nameoff
;
3868 namelen
= command
->len
- nameoff
;
3869 cmd
->name_str
= bfd_alloc (abfd
, namelen
);
3870 if (cmd
->name_str
== NULL
)
3872 if (bfd_seek (abfd
, mdata
->hdr_offset
+ cmd
->name_offset
, SEEK_SET
) != 0
3873 || bfd_bread (cmd
->name_str
, namelen
, abfd
) != namelen
)
3879 bfd_mach_o_read_prebound_dylib (bfd
*abfd
,
3880 bfd_mach_o_load_command
*command
)
3882 bfd_mach_o_prebound_dylib_command
*cmd
= &command
->command
.prebound_dylib
;
3883 struct mach_o_prebound_dylib_command_external raw
;
3884 unsigned int nameoff
;
3885 unsigned int modoff
;
3886 unsigned int str_len
;
3889 if (bfd_bread (&raw
, sizeof (raw
), abfd
) != sizeof (raw
))
3892 nameoff
= bfd_h_get_32 (abfd
, raw
.name
);
3893 modoff
= bfd_h_get_32 (abfd
, raw
.linked_modules
);
3894 if (nameoff
> command
->len
|| modoff
> command
->len
)
3897 str_len
= command
->len
- sizeof (raw
);
3898 str
= bfd_alloc (abfd
, str_len
);
3901 if (bfd_bread (str
, str_len
, abfd
) != str_len
)
3904 cmd
->name_offset
= command
->offset
+ nameoff
;
3905 cmd
->nmodules
= bfd_h_get_32 (abfd
, raw
.nmodules
);
3906 cmd
->linked_modules_offset
= command
->offset
+ modoff
;
3908 cmd
->name_str
= (char *)str
+ nameoff
- (sizeof (raw
) + BFD_MACH_O_LC_SIZE
);
3909 cmd
->linked_modules
= str
+ modoff
- (sizeof (raw
) + BFD_MACH_O_LC_SIZE
);
3914 bfd_mach_o_read_prebind_cksum (bfd
*abfd
,
3915 bfd_mach_o_load_command
*command
)
3917 bfd_mach_o_prebind_cksum_command
*cmd
= &command
->command
.prebind_cksum
;
3918 struct mach_o_prebind_cksum_command_external raw
;
3920 if (bfd_bread (&raw
, sizeof (raw
), abfd
) != sizeof (raw
))
3923 cmd
->cksum
= bfd_get_32 (abfd
, raw
.cksum
);
3928 bfd_mach_o_read_twolevel_hints (bfd
*abfd
,
3929 bfd_mach_o_load_command
*command
)
3931 bfd_mach_o_twolevel_hints_command
*cmd
= &command
->command
.twolevel_hints
;
3932 struct mach_o_twolevel_hints_command_external raw
;
3934 if (bfd_bread (&raw
, sizeof (raw
), abfd
) != sizeof (raw
))
3937 cmd
->offset
= bfd_get_32 (abfd
, raw
.offset
);
3938 cmd
->nhints
= bfd_get_32 (abfd
, raw
.nhints
);
3943 bfd_mach_o_read_fvmlib (bfd
*abfd
, bfd_mach_o_load_command
*command
)
3945 bfd_mach_o_fvmlib_command
*fvm
= &command
->command
.fvmlib
;
3946 struct mach_o_fvmlib_command_external raw
;
3947 unsigned int nameoff
;
3948 unsigned int namelen
;
3950 if (bfd_bread (&raw
, sizeof (raw
), abfd
) != sizeof (raw
))
3953 nameoff
= bfd_h_get_32 (abfd
, raw
.name
);
3954 fvm
->minor_version
= bfd_h_get_32 (abfd
, raw
.minor_version
);
3955 fvm
->header_addr
= bfd_h_get_32 (abfd
, raw
.header_addr
);
3957 fvm
->name_offset
= command
->offset
+ nameoff
;
3958 namelen
= command
->len
- nameoff
;
3959 fvm
->name_str
= bfd_alloc (abfd
, namelen
);
3960 if (fvm
->name_str
== NULL
)
3962 if (bfd_seek (abfd
, fvm
->name_offset
, SEEK_SET
) != 0
3963 || bfd_bread (fvm
->name_str
, namelen
, abfd
) != namelen
)
3969 bfd_mach_o_read_thread (bfd
*abfd
, bfd_mach_o_load_command
*command
)
3971 bfd_mach_o_data_struct
*mdata
= bfd_mach_o_get_data (abfd
);
3972 bfd_mach_o_thread_command
*cmd
= &command
->command
.thread
;
3973 unsigned int offset
;
3974 unsigned int nflavours
;
3977 BFD_ASSERT ((command
->type
== BFD_MACH_O_LC_THREAD
)
3978 || (command
->type
== BFD_MACH_O_LC_UNIXTHREAD
));
3980 /* Count the number of threads. */
3983 while (offset
!= command
->len
)
3985 struct mach_o_thread_command_external raw
;
3987 if (offset
>= command
->len
)
3990 if (bfd_seek (abfd
, command
->offset
+ offset
, SEEK_SET
) != 0
3991 || bfd_bread (&raw
, sizeof (raw
), abfd
) != sizeof (raw
))
3994 offset
+= sizeof (raw
) + bfd_h_get_32 (abfd
, raw
.count
) * 4;
3998 /* Allocate threads. */
3999 cmd
->flavours
= bfd_alloc2
4000 (abfd
, nflavours
, sizeof (bfd_mach_o_thread_flavour
));
4001 if (cmd
->flavours
== NULL
)
4003 cmd
->nflavours
= nflavours
;
4007 while (offset
!= command
->len
)
4009 struct mach_o_thread_command_external raw
;
4011 if (offset
>= command
->len
)
4014 if (nflavours
>= cmd
->nflavours
)
4017 if (bfd_seek (abfd
, command
->offset
+ offset
, SEEK_SET
) != 0
4018 || bfd_bread (&raw
, sizeof (raw
), abfd
) != sizeof (raw
))
4021 cmd
->flavours
[nflavours
].flavour
= bfd_h_get_32 (abfd
, raw
.flavour
);
4022 cmd
->flavours
[nflavours
].offset
= command
->offset
+ offset
+ sizeof (raw
);
4023 cmd
->flavours
[nflavours
].size
= bfd_h_get_32 (abfd
, raw
.count
) * 4;
4024 offset
+= cmd
->flavours
[nflavours
].size
+ sizeof (raw
);
4028 for (i
= 0; i
< nflavours
; i
++)
4031 unsigned int snamelen
;
4033 const char *flavourstr
;
4034 const char *prefix
= "LC_THREAD";
4037 switch (mdata
->header
.cputype
)
4039 case BFD_MACH_O_CPU_TYPE_POWERPC
:
4040 case BFD_MACH_O_CPU_TYPE_POWERPC_64
:
4042 bfd_mach_o_ppc_flavour_string (cmd
->flavours
[i
].flavour
);
4044 case BFD_MACH_O_CPU_TYPE_I386
:
4045 case BFD_MACH_O_CPU_TYPE_X86_64
:
4047 bfd_mach_o_i386_flavour_string (cmd
->flavours
[i
].flavour
);
4050 flavourstr
= "UNKNOWN_ARCHITECTURE";
4054 snamelen
= strlen (prefix
) + 1 + 20 + 1 + strlen (flavourstr
) + 1;
4055 sname
= bfd_alloc (abfd
, snamelen
);
4061 sprintf (sname
, "%s.%s.%u", prefix
, flavourstr
, j
);
4062 if (bfd_get_section_by_name (abfd
, sname
) == NULL
)
4067 bfdsec
= bfd_make_section_with_flags (abfd
, sname
, SEC_HAS_CONTENTS
);
4071 bfdsec
->size
= cmd
->flavours
[i
].size
;
4072 bfdsec
->filepos
= cmd
->flavours
[i
].offset
;
4073 bfdsec
->alignment_power
= 0x0;
4075 cmd
->section
= bfdsec
;
4082 bfd_mach_o_read_dysymtab (bfd
*abfd
, bfd_mach_o_load_command
*command
)
4084 bfd_mach_o_dysymtab_command
*cmd
= &command
->command
.dysymtab
;
4085 bfd_mach_o_data_struct
*mdata
= bfd_mach_o_get_data (abfd
);
4087 BFD_ASSERT (command
->type
== BFD_MACH_O_LC_DYSYMTAB
);
4090 struct mach_o_dysymtab_command_external raw
;
4092 if (bfd_bread (&raw
, sizeof (raw
), abfd
) != sizeof (raw
))
4095 cmd
->ilocalsym
= bfd_h_get_32 (abfd
, raw
.ilocalsym
);
4096 cmd
->nlocalsym
= bfd_h_get_32 (abfd
, raw
.nlocalsym
);
4097 cmd
->iextdefsym
= bfd_h_get_32 (abfd
, raw
.iextdefsym
);
4098 cmd
->nextdefsym
= bfd_h_get_32 (abfd
, raw
.nextdefsym
);
4099 cmd
->iundefsym
= bfd_h_get_32 (abfd
, raw
.iundefsym
);
4100 cmd
->nundefsym
= bfd_h_get_32 (abfd
, raw
.nundefsym
);
4101 cmd
->tocoff
= bfd_h_get_32 (abfd
, raw
.tocoff
);
4102 cmd
->ntoc
= bfd_h_get_32 (abfd
, raw
.ntoc
);
4103 cmd
->modtaboff
= bfd_h_get_32 (abfd
, raw
.modtaboff
);
4104 cmd
->nmodtab
= bfd_h_get_32 (abfd
, raw
.nmodtab
);
4105 cmd
->extrefsymoff
= bfd_h_get_32 (abfd
, raw
.extrefsymoff
);
4106 cmd
->nextrefsyms
= bfd_h_get_32 (abfd
, raw
.nextrefsyms
);
4107 cmd
->indirectsymoff
= bfd_h_get_32 (abfd
, raw
.indirectsymoff
);
4108 cmd
->nindirectsyms
= bfd_h_get_32 (abfd
, raw
.nindirectsyms
);
4109 cmd
->extreloff
= bfd_h_get_32 (abfd
, raw
.extreloff
);
4110 cmd
->nextrel
= bfd_h_get_32 (abfd
, raw
.nextrel
);
4111 cmd
->locreloff
= bfd_h_get_32 (abfd
, raw
.locreloff
);
4112 cmd
->nlocrel
= bfd_h_get_32 (abfd
, raw
.nlocrel
);
4115 if (cmd
->nmodtab
!= 0)
4118 int wide
= bfd_mach_o_wide_p (abfd
);
4119 unsigned int module_len
= wide
? 56 : 52;
4122 bfd_alloc2 (abfd
, cmd
->nmodtab
, sizeof (bfd_mach_o_dylib_module
));
4123 if (cmd
->dylib_module
== NULL
)
4126 if (bfd_seek (abfd
, cmd
->modtaboff
, SEEK_SET
) != 0)
4129 for (i
= 0; i
< cmd
->nmodtab
; i
++)
4131 bfd_mach_o_dylib_module
*module
= &cmd
->dylib_module
[i
];
4133 unsigned char buf
[56];
4135 if (bfd_bread ((void *) buf
, module_len
, abfd
) != module_len
)
4138 module
->module_name_idx
= bfd_h_get_32 (abfd
, buf
+ 0);
4139 module
->iextdefsym
= bfd_h_get_32 (abfd
, buf
+ 4);
4140 module
->nextdefsym
= bfd_h_get_32 (abfd
, buf
+ 8);
4141 module
->irefsym
= bfd_h_get_32 (abfd
, buf
+ 12);
4142 module
->nrefsym
= bfd_h_get_32 (abfd
, buf
+ 16);
4143 module
->ilocalsym
= bfd_h_get_32 (abfd
, buf
+ 20);
4144 module
->nlocalsym
= bfd_h_get_32 (abfd
, buf
+ 24);
4145 module
->iextrel
= bfd_h_get_32 (abfd
, buf
+ 28);
4146 module
->nextrel
= bfd_h_get_32 (abfd
, buf
+ 32);
4147 v
= bfd_h_get_32 (abfd
, buf
+36);
4148 module
->iinit
= v
& 0xffff;
4149 module
->iterm
= (v
>> 16) & 0xffff;
4150 v
= bfd_h_get_32 (abfd
, buf
+ 40);
4151 module
->ninit
= v
& 0xffff;
4152 module
->nterm
= (v
>> 16) & 0xffff;
4155 module
->objc_module_info_size
= bfd_h_get_32 (abfd
, buf
+ 44);
4156 module
->objc_module_info_addr
= bfd_h_get_64 (abfd
, buf
+ 48);
4160 module
->objc_module_info_addr
= bfd_h_get_32 (abfd
, buf
+ 44);
4161 module
->objc_module_info_size
= bfd_h_get_32 (abfd
, buf
+ 48);
4170 cmd
->dylib_toc
= bfd_alloc2
4171 (abfd
, cmd
->ntoc
, sizeof (bfd_mach_o_dylib_table_of_content
));
4172 if (cmd
->dylib_toc
== NULL
)
4175 if (bfd_seek (abfd
, cmd
->tocoff
, SEEK_SET
) != 0)
4178 for (i
= 0; i
< cmd
->ntoc
; i
++)
4180 struct mach_o_dylib_table_of_contents_external raw
;
4181 bfd_mach_o_dylib_table_of_content
*toc
= &cmd
->dylib_toc
[i
];
4183 if (bfd_bread (&raw
, sizeof (raw
), abfd
) != sizeof (raw
))
4186 toc
->symbol_index
= bfd_h_get_32 (abfd
, raw
.symbol_index
);
4187 toc
->module_index
= bfd_h_get_32 (abfd
, raw
.module_index
);
4191 if (cmd
->nindirectsyms
!= 0)
4195 cmd
->indirect_syms
= bfd_alloc2
4196 (abfd
, cmd
->nindirectsyms
, sizeof (unsigned int));
4197 if (cmd
->indirect_syms
== NULL
)
4200 if (bfd_seek (abfd
, cmd
->indirectsymoff
, SEEK_SET
) != 0)
4203 for (i
= 0; i
< cmd
->nindirectsyms
; i
++)
4205 unsigned char raw
[4];
4206 unsigned int *is
= &cmd
->indirect_syms
[i
];
4208 if (bfd_bread (raw
, sizeof (raw
), abfd
) != sizeof (raw
))
4211 *is
= bfd_h_get_32 (abfd
, raw
);
4215 if (cmd
->nextrefsyms
!= 0)
4220 cmd
->ext_refs
= bfd_alloc2
4221 (abfd
, cmd
->nextrefsyms
, sizeof (bfd_mach_o_dylib_reference
));
4222 if (cmd
->ext_refs
== NULL
)
4225 if (bfd_seek (abfd
, cmd
->extrefsymoff
, SEEK_SET
) != 0)
4228 for (i
= 0; i
< cmd
->nextrefsyms
; i
++)
4230 unsigned char raw
[4];
4231 bfd_mach_o_dylib_reference
*ref
= &cmd
->ext_refs
[i
];
4233 if (bfd_bread (raw
, sizeof (raw
), abfd
) != sizeof (raw
))
4236 /* Fields isym and flags are written as bit-fields, thus we need
4237 a specific processing for endianness. */
4238 v
= bfd_h_get_32 (abfd
, raw
);
4239 if (bfd_big_endian (abfd
))
4241 ref
->isym
= (v
>> 8) & 0xffffff;
4242 ref
->flags
= v
& 0xff;
4246 ref
->isym
= v
& 0xffffff;
4247 ref
->flags
= (v
>> 24) & 0xff;
4252 if (mdata
->dysymtab
)
4254 mdata
->dysymtab
= cmd
;
4260 bfd_mach_o_read_symtab (bfd
*abfd
, bfd_mach_o_load_command
*command
)
4262 bfd_mach_o_symtab_command
*symtab
= &command
->command
.symtab
;
4263 bfd_mach_o_data_struct
*mdata
= bfd_mach_o_get_data (abfd
);
4264 struct mach_o_symtab_command_external raw
;
4266 BFD_ASSERT (command
->type
== BFD_MACH_O_LC_SYMTAB
);
4268 if (bfd_bread (&raw
, sizeof (raw
), abfd
) != sizeof (raw
))
4271 symtab
->symoff
= bfd_h_get_32 (abfd
, raw
.symoff
);
4272 symtab
->nsyms
= bfd_h_get_32 (abfd
, raw
.nsyms
);
4273 symtab
->stroff
= bfd_h_get_32 (abfd
, raw
.stroff
);
4274 symtab
->strsize
= bfd_h_get_32 (abfd
, raw
.strsize
);
4275 symtab
->symbols
= NULL
;
4276 symtab
->strtab
= NULL
;
4278 if (symtab
->nsyms
!= 0)
4279 abfd
->flags
|= HAS_SYMS
;
4283 mdata
->symtab
= symtab
;
4288 bfd_mach_o_read_uuid (bfd
*abfd
, bfd_mach_o_load_command
*command
)
4290 bfd_mach_o_uuid_command
*cmd
= &command
->command
.uuid
;
4292 BFD_ASSERT (command
->type
== BFD_MACH_O_LC_UUID
);
4294 if (bfd_bread (cmd
->uuid
, 16, abfd
) != 16)
4301 bfd_mach_o_read_linkedit (bfd
*abfd
, bfd_mach_o_load_command
*command
)
4303 bfd_mach_o_linkedit_command
*cmd
= &command
->command
.linkedit
;
4304 struct mach_o_linkedit_data_command_external raw
;
4306 if (bfd_bread (&raw
, sizeof (raw
), abfd
) != sizeof (raw
))
4309 cmd
->dataoff
= bfd_get_32 (abfd
, raw
.dataoff
);
4310 cmd
->datasize
= bfd_get_32 (abfd
, raw
.datasize
);
4315 bfd_mach_o_read_str (bfd
*abfd
, bfd_mach_o_load_command
*command
)
4317 bfd_mach_o_str_command
*cmd
= &command
->command
.str
;
4318 struct mach_o_str_command_external raw
;
4321 if (bfd_bread (&raw
, sizeof (raw
), abfd
) != sizeof (raw
))
4324 off
= bfd_get_32 (abfd
, raw
.str
);
4325 cmd
->stroff
= command
->offset
+ off
;
4326 cmd
->str_len
= command
->len
- off
;
4327 cmd
->str
= bfd_alloc (abfd
, cmd
->str_len
);
4328 if (cmd
->str
== NULL
)
4330 if (bfd_seek (abfd
, cmd
->stroff
, SEEK_SET
) != 0
4331 || bfd_bread ((void *) cmd
->str
, cmd
->str_len
, abfd
) != cmd
->str_len
)
4336 static unsigned char *
4337 bfd_mach_o_alloc_and_read (bfd
*abfd
, unsigned int off
, unsigned int size
)
4341 buf
= bfd_alloc (abfd
, size
);
4344 if (bfd_seek (abfd
, off
, SEEK_SET
) != 0
4345 || bfd_bread (buf
, size
, abfd
) != size
)
4351 bfd_mach_o_read_dyld_content (bfd
*abfd
, bfd_mach_o_dyld_info_command
*cmd
)
4353 /* Read rebase content. */
4354 if (cmd
->rebase_content
== NULL
&& cmd
->rebase_size
!= 0)
4356 cmd
->rebase_content
=
4357 bfd_mach_o_alloc_and_read (abfd
, cmd
->rebase_off
, cmd
->rebase_size
);
4358 if (cmd
->rebase_content
== NULL
)
4362 /* Read bind content. */
4363 if (cmd
->bind_content
== NULL
&& cmd
->bind_size
!= 0)
4366 bfd_mach_o_alloc_and_read (abfd
, cmd
->bind_off
, cmd
->bind_size
);
4367 if (cmd
->bind_content
== NULL
)
4371 /* Read weak bind content. */
4372 if (cmd
->weak_bind_content
== NULL
&& cmd
->weak_bind_size
!= 0)
4374 cmd
->weak_bind_content
= bfd_mach_o_alloc_and_read
4375 (abfd
, cmd
->weak_bind_off
, cmd
->weak_bind_size
);
4376 if (cmd
->weak_bind_content
== NULL
)
4380 /* Read lazy bind content. */
4381 if (cmd
->lazy_bind_content
== NULL
&& cmd
->lazy_bind_size
!= 0)
4383 cmd
->lazy_bind_content
= bfd_mach_o_alloc_and_read
4384 (abfd
, cmd
->lazy_bind_off
, cmd
->lazy_bind_size
);
4385 if (cmd
->lazy_bind_content
== NULL
)
4389 /* Read export content. */
4390 if (cmd
->export_content
== NULL
&& cmd
->export_size
!= 0)
4392 cmd
->export_content
= bfd_mach_o_alloc_and_read
4393 (abfd
, cmd
->export_off
, cmd
->export_size
);
4394 if (cmd
->export_content
== NULL
)
4402 bfd_mach_o_read_dyld_info (bfd
*abfd
, bfd_mach_o_load_command
*command
)
4404 bfd_mach_o_dyld_info_command
*cmd
= &command
->command
.dyld_info
;
4405 struct mach_o_dyld_info_command_external raw
;
4407 if (bfd_bread (&raw
, sizeof (raw
), abfd
) != sizeof (raw
))
4410 cmd
->rebase_off
= bfd_get_32 (abfd
, raw
.rebase_off
);
4411 cmd
->rebase_size
= bfd_get_32 (abfd
, raw
.rebase_size
);
4412 cmd
->rebase_content
= NULL
;
4413 cmd
->bind_off
= bfd_get_32 (abfd
, raw
.bind_off
);
4414 cmd
->bind_size
= bfd_get_32 (abfd
, raw
.bind_size
);
4415 cmd
->bind_content
= NULL
;
4416 cmd
->weak_bind_off
= bfd_get_32 (abfd
, raw
.weak_bind_off
);
4417 cmd
->weak_bind_size
= bfd_get_32 (abfd
, raw
.weak_bind_size
);
4418 cmd
->weak_bind_content
= NULL
;
4419 cmd
->lazy_bind_off
= bfd_get_32 (abfd
, raw
.lazy_bind_off
);
4420 cmd
->lazy_bind_size
= bfd_get_32 (abfd
, raw
.lazy_bind_size
);
4421 cmd
->lazy_bind_content
= NULL
;
4422 cmd
->export_off
= bfd_get_32 (abfd
, raw
.export_off
);
4423 cmd
->export_size
= bfd_get_32 (abfd
, raw
.export_size
);
4424 cmd
->export_content
= NULL
;
4429 bfd_mach_o_read_version_min (bfd
*abfd
, bfd_mach_o_load_command
*command
)
4431 bfd_mach_o_version_min_command
*cmd
= &command
->command
.version_min
;
4432 struct mach_o_version_min_command_external raw
;
4435 if (bfd_bread (&raw
, sizeof (raw
), abfd
) != sizeof (raw
))
4438 ver
= bfd_get_32 (abfd
, raw
.version
);
4439 cmd
->rel
= ver
>> 16;
4440 cmd
->maj
= ver
>> 8;
4442 cmd
->reserved
= bfd_get_32 (abfd
, raw
.reserved
);
4447 bfd_mach_o_read_encryption_info (bfd
*abfd
, bfd_mach_o_load_command
*command
)
4449 bfd_mach_o_encryption_info_command
*cmd
= &command
->command
.encryption_info
;
4450 struct mach_o_encryption_info_command_external raw
;
4452 if (bfd_bread (&raw
, sizeof (raw
), abfd
) != sizeof (raw
))
4455 cmd
->cryptoff
= bfd_get_32 (abfd
, raw
.cryptoff
);
4456 cmd
->cryptsize
= bfd_get_32 (abfd
, raw
.cryptsize
);
4457 cmd
->cryptid
= bfd_get_32 (abfd
, raw
.cryptid
);
4462 bfd_mach_o_read_encryption_info_64 (bfd
*abfd
, bfd_mach_o_load_command
*command
)
4464 bfd_mach_o_encryption_info_command
*cmd
= &command
->command
.encryption_info
;
4465 struct mach_o_encryption_info_64_command_external raw
;
4467 if (bfd_bread (&raw
, sizeof (raw
), abfd
) != sizeof (raw
))
4470 cmd
->cryptoff
= bfd_get_32 (abfd
, raw
.cryptoff
);
4471 cmd
->cryptsize
= bfd_get_32 (abfd
, raw
.cryptsize
);
4472 cmd
->cryptid
= bfd_get_32 (abfd
, raw
.cryptid
);
4477 bfd_mach_o_read_main (bfd
*abfd
, bfd_mach_o_load_command
*command
)
4479 bfd_mach_o_main_command
*cmd
= &command
->command
.main
;
4480 struct mach_o_entry_point_command_external raw
;
4482 if (bfd_bread (&raw
, sizeof (raw
), abfd
) != sizeof (raw
))
4485 cmd
->entryoff
= bfd_get_64 (abfd
, raw
.entryoff
);
4486 cmd
->stacksize
= bfd_get_64 (abfd
, raw
.stacksize
);
4491 bfd_mach_o_read_source_version (bfd
*abfd
, bfd_mach_o_load_command
*command
)
4493 bfd_mach_o_source_version_command
*cmd
= &command
->command
.source_version
;
4494 struct mach_o_source_version_command_external raw
;
4497 if (bfd_bread (&raw
, sizeof (raw
), abfd
) != sizeof (raw
))
4500 ver
= bfd_get_64 (abfd
, raw
.version
);
4501 /* Note: we use a serie of shift to avoid shift > 32 (for which gcc
4502 generates warnings) in case of the host doesn't support 64 bit
4504 cmd
->e
= ver
& 0x3ff;
4506 cmd
->d
= ver
& 0x3ff;
4508 cmd
->c
= ver
& 0x3ff;
4510 cmd
->b
= ver
& 0x3ff;
4512 cmd
->a
= ver
& 0xffffff;
4517 bfd_mach_o_read_segment (bfd
*abfd
,
4518 bfd_mach_o_load_command
*command
,
4521 bfd_mach_o_segment_command
*seg
= &command
->command
.segment
;
4526 struct mach_o_segment_command_64_external raw
;
4528 BFD_ASSERT (command
->type
== BFD_MACH_O_LC_SEGMENT_64
);
4530 if (bfd_bread (&raw
, sizeof (raw
), abfd
) != sizeof (raw
))
4533 memcpy (seg
->segname
, raw
.segname
, 16);
4534 seg
->segname
[16] = '\0';
4536 seg
->vmaddr
= bfd_h_get_64 (abfd
, raw
.vmaddr
);
4537 seg
->vmsize
= bfd_h_get_64 (abfd
, raw
.vmsize
);
4538 seg
->fileoff
= bfd_h_get_64 (abfd
, raw
.fileoff
);
4539 seg
->filesize
= bfd_h_get_64 (abfd
, raw
.filesize
);
4540 seg
->maxprot
= bfd_h_get_32 (abfd
, raw
.maxprot
);
4541 seg
->initprot
= bfd_h_get_32 (abfd
, raw
.initprot
);
4542 seg
->nsects
= bfd_h_get_32 (abfd
, raw
.nsects
);
4543 seg
->flags
= bfd_h_get_32 (abfd
, raw
.flags
);
4547 struct mach_o_segment_command_32_external raw
;
4549 BFD_ASSERT (command
->type
== BFD_MACH_O_LC_SEGMENT
);
4551 if (bfd_bread (&raw
, sizeof (raw
), abfd
) != sizeof (raw
))
4554 memcpy (seg
->segname
, raw
.segname
, 16);
4555 seg
->segname
[16] = '\0';
4557 seg
->vmaddr
= bfd_h_get_32 (abfd
, raw
.vmaddr
);
4558 seg
->vmsize
= bfd_h_get_32 (abfd
, raw
.vmsize
);
4559 seg
->fileoff
= bfd_h_get_32 (abfd
, raw
.fileoff
);
4560 seg
->filesize
= bfd_h_get_32 (abfd
, raw
.filesize
);
4561 seg
->maxprot
= bfd_h_get_32 (abfd
, raw
.maxprot
);
4562 seg
->initprot
= bfd_h_get_32 (abfd
, raw
.initprot
);
4563 seg
->nsects
= bfd_h_get_32 (abfd
, raw
.nsects
);
4564 seg
->flags
= bfd_h_get_32 (abfd
, raw
.flags
);
4566 seg
->sect_head
= NULL
;
4567 seg
->sect_tail
= NULL
;
4569 for (i
= 0; i
< seg
->nsects
; i
++)
4573 sec
= bfd_mach_o_read_section (abfd
, seg
->initprot
, wide
);
4577 bfd_mach_o_append_section_to_segment
4578 (seg
, bfd_mach_o_get_mach_o_section (sec
));
4585 bfd_mach_o_read_segment_32 (bfd
*abfd
, bfd_mach_o_load_command
*command
)
4587 return bfd_mach_o_read_segment (abfd
, command
, 0);
4591 bfd_mach_o_read_segment_64 (bfd
*abfd
, bfd_mach_o_load_command
*command
)
4593 return bfd_mach_o_read_segment (abfd
, command
, 1);
4597 bfd_mach_o_read_command (bfd
*abfd
, bfd_mach_o_load_command
*command
)
4599 bfd_mach_o_data_struct
*mdata
= bfd_mach_o_get_data (abfd
);
4600 struct mach_o_load_command_external raw
;
4603 /* Read command type and length. */
4604 if (bfd_seek (abfd
, mdata
->hdr_offset
+ command
->offset
, SEEK_SET
) != 0
4605 || bfd_bread (&raw
, BFD_MACH_O_LC_SIZE
, abfd
) != BFD_MACH_O_LC_SIZE
)
4608 cmd
= bfd_h_get_32 (abfd
, raw
.cmd
);
4609 command
->type
= cmd
& ~BFD_MACH_O_LC_REQ_DYLD
;
4610 command
->type_required
= cmd
& BFD_MACH_O_LC_REQ_DYLD
? TRUE
: FALSE
;
4611 command
->len
= bfd_h_get_32 (abfd
, raw
.cmdsize
);
4613 switch (command
->type
)
4615 case BFD_MACH_O_LC_SEGMENT
:
4616 if (!bfd_mach_o_read_segment_32 (abfd
, command
))
4619 case BFD_MACH_O_LC_SEGMENT_64
:
4620 if (!bfd_mach_o_read_segment_64 (abfd
, command
))
4623 case BFD_MACH_O_LC_SYMTAB
:
4624 if (!bfd_mach_o_read_symtab (abfd
, command
))
4627 case BFD_MACH_O_LC_SYMSEG
:
4629 case BFD_MACH_O_LC_THREAD
:
4630 case BFD_MACH_O_LC_UNIXTHREAD
:
4631 if (!bfd_mach_o_read_thread (abfd
, command
))
4634 case BFD_MACH_O_LC_LOAD_DYLINKER
:
4635 case BFD_MACH_O_LC_ID_DYLINKER
:
4636 case BFD_MACH_O_LC_DYLD_ENVIRONMENT
:
4637 if (!bfd_mach_o_read_dylinker (abfd
, command
))
4640 case BFD_MACH_O_LC_LOAD_DYLIB
:
4641 case BFD_MACH_O_LC_LAZY_LOAD_DYLIB
:
4642 case BFD_MACH_O_LC_ID_DYLIB
:
4643 case BFD_MACH_O_LC_LOAD_WEAK_DYLIB
:
4644 case BFD_MACH_O_LC_REEXPORT_DYLIB
:
4645 case BFD_MACH_O_LC_LOAD_UPWARD_DYLIB
:
4646 if (!bfd_mach_o_read_dylib (abfd
, command
))
4649 case BFD_MACH_O_LC_PREBOUND_DYLIB
:
4650 if (!bfd_mach_o_read_prebound_dylib (abfd
, command
))
4653 case BFD_MACH_O_LC_LOADFVMLIB
:
4654 case BFD_MACH_O_LC_IDFVMLIB
:
4655 if (!bfd_mach_o_read_fvmlib (abfd
, command
))
4658 case BFD_MACH_O_LC_IDENT
:
4659 case BFD_MACH_O_LC_FVMFILE
:
4660 case BFD_MACH_O_LC_PREPAGE
:
4661 case BFD_MACH_O_LC_ROUTINES
:
4662 case BFD_MACH_O_LC_ROUTINES_64
:
4664 case BFD_MACH_O_LC_SUB_FRAMEWORK
:
4665 case BFD_MACH_O_LC_SUB_UMBRELLA
:
4666 case BFD_MACH_O_LC_SUB_LIBRARY
:
4667 case BFD_MACH_O_LC_SUB_CLIENT
:
4668 case BFD_MACH_O_LC_RPATH
:
4669 if (!bfd_mach_o_read_str (abfd
, command
))
4672 case BFD_MACH_O_LC_DYSYMTAB
:
4673 if (!bfd_mach_o_read_dysymtab (abfd
, command
))
4676 case BFD_MACH_O_LC_PREBIND_CKSUM
:
4677 if (!bfd_mach_o_read_prebind_cksum (abfd
, command
))
4680 case BFD_MACH_O_LC_TWOLEVEL_HINTS
:
4681 if (!bfd_mach_o_read_twolevel_hints (abfd
, command
))
4684 case BFD_MACH_O_LC_UUID
:
4685 if (!bfd_mach_o_read_uuid (abfd
, command
))
4688 case BFD_MACH_O_LC_CODE_SIGNATURE
:
4689 case BFD_MACH_O_LC_SEGMENT_SPLIT_INFO
:
4690 case BFD_MACH_O_LC_FUNCTION_STARTS
:
4691 case BFD_MACH_O_LC_DATA_IN_CODE
:
4692 case BFD_MACH_O_LC_DYLIB_CODE_SIGN_DRS
:
4693 case BFD_MACH_O_LC_LINKER_OPTIMIZATION_HINT
:
4694 if (!bfd_mach_o_read_linkedit (abfd
, command
))
4697 case BFD_MACH_O_LC_ENCRYPTION_INFO
:
4698 if (!bfd_mach_o_read_encryption_info (abfd
, command
))
4701 case BFD_MACH_O_LC_ENCRYPTION_INFO_64
:
4702 if (!bfd_mach_o_read_encryption_info_64 (abfd
, command
))
4705 case BFD_MACH_O_LC_DYLD_INFO
:
4706 if (!bfd_mach_o_read_dyld_info (abfd
, command
))
4709 case BFD_MACH_O_LC_VERSION_MIN_MACOSX
:
4710 case BFD_MACH_O_LC_VERSION_MIN_IPHONEOS
:
4711 case BFD_MACH_O_LC_VERSION_MIN_WATCHOS
:
4712 if (!bfd_mach_o_read_version_min (abfd
, command
))
4715 case BFD_MACH_O_LC_MAIN
:
4716 if (!bfd_mach_o_read_main (abfd
, command
))
4719 case BFD_MACH_O_LC_SOURCE_VERSION
:
4720 if (!bfd_mach_o_read_source_version (abfd
, command
))
4725 (*_bfd_error_handler
)(_("%B: unknown load command 0x%lx"),
4726 abfd
, (unsigned long) command
->type
);
4734 bfd_mach_o_flatten_sections (bfd
*abfd
)
4736 bfd_mach_o_data_struct
*mdata
= bfd_mach_o_get_data (abfd
);
4737 bfd_mach_o_load_command
*cmd
;
4740 /* Count total number of sections. */
4743 for (cmd
= mdata
->first_command
; cmd
!= NULL
; cmd
= cmd
->next
)
4745 if (cmd
->type
== BFD_MACH_O_LC_SEGMENT
4746 || cmd
->type
== BFD_MACH_O_LC_SEGMENT_64
)
4748 bfd_mach_o_segment_command
*seg
= &cmd
->command
.segment
;
4750 mdata
->nsects
+= seg
->nsects
;
4754 /* Allocate sections array. */
4755 mdata
->sections
= bfd_alloc2 (abfd
,
4756 mdata
->nsects
, sizeof (bfd_mach_o_section
*));
4758 /* Fill the array. */
4761 for (cmd
= mdata
->first_command
; cmd
!= NULL
; cmd
= cmd
->next
)
4763 if (cmd
->type
== BFD_MACH_O_LC_SEGMENT
4764 || cmd
->type
== BFD_MACH_O_LC_SEGMENT_64
)
4766 bfd_mach_o_segment_command
*seg
= &cmd
->command
.segment
;
4767 bfd_mach_o_section
*sec
;
4769 BFD_ASSERT (csect
+ seg
->nsects
<= mdata
->nsects
);
4771 for (sec
= seg
->sect_head
; sec
!= NULL
; sec
= sec
->next
)
4772 mdata
->sections
[csect
++] = sec
;
4778 bfd_mach_o_scan_start_address (bfd
*abfd
)
4780 bfd_mach_o_data_struct
*mdata
= bfd_mach_o_get_data (abfd
);
4781 bfd_mach_o_thread_command
*thr
= NULL
;
4782 bfd_mach_o_load_command
*cmd
;
4785 for (cmd
= mdata
->first_command
; cmd
!= NULL
; cmd
= cmd
->next
)
4786 if (cmd
->type
== BFD_MACH_O_LC_THREAD
4787 || cmd
->type
== BFD_MACH_O_LC_UNIXTHREAD
)
4789 thr
= &cmd
->command
.thread
;
4792 else if (cmd
->type
== BFD_MACH_O_LC_MAIN
&& mdata
->nsects
> 1)
4794 bfd_mach_o_main_command
*main_cmd
= &cmd
->command
.main
;
4795 bfd_mach_o_section
*text_sect
= mdata
->sections
[0];
4799 abfd
->start_address
= main_cmd
->entryoff
4800 + (text_sect
->addr
- text_sect
->offset
);
4805 /* An object file has no start address, so do not fail if not found. */
4809 /* FIXME: create a subtarget hook ? */
4810 for (i
= 0; i
< thr
->nflavours
; i
++)
4812 if ((mdata
->header
.cputype
== BFD_MACH_O_CPU_TYPE_I386
)
4813 && (thr
->flavours
[i
].flavour
== BFD_MACH_O_x86_THREAD_STATE32
))
4815 unsigned char buf
[4];
4817 if (bfd_seek (abfd
, thr
->flavours
[i
].offset
+ 40, SEEK_SET
) != 0
4818 || bfd_bread (buf
, 4, abfd
) != 4)
4821 abfd
->start_address
= bfd_h_get_32 (abfd
, buf
);
4823 else if ((mdata
->header
.cputype
== BFD_MACH_O_CPU_TYPE_POWERPC
)
4824 && (thr
->flavours
[i
].flavour
== BFD_MACH_O_PPC_THREAD_STATE
))
4826 unsigned char buf
[4];
4828 if (bfd_seek (abfd
, thr
->flavours
[i
].offset
+ 0, SEEK_SET
) != 0
4829 || bfd_bread (buf
, 4, abfd
) != 4)
4832 abfd
->start_address
= bfd_h_get_32 (abfd
, buf
);
4834 else if ((mdata
->header
.cputype
== BFD_MACH_O_CPU_TYPE_POWERPC_64
)
4835 && (thr
->flavours
[i
].flavour
== BFD_MACH_O_PPC_THREAD_STATE64
))
4837 unsigned char buf
[8];
4839 if (bfd_seek (abfd
, thr
->flavours
[i
].offset
+ 0, SEEK_SET
) != 0
4840 || bfd_bread (buf
, 8, abfd
) != 8)
4843 abfd
->start_address
= bfd_h_get_64 (abfd
, buf
);
4845 else if ((mdata
->header
.cputype
== BFD_MACH_O_CPU_TYPE_X86_64
)
4846 && (thr
->flavours
[i
].flavour
== BFD_MACH_O_x86_THREAD_STATE64
))
4848 unsigned char buf
[8];
4850 if (bfd_seek (abfd
, thr
->flavours
[i
].offset
+ (16 * 8), SEEK_SET
) != 0
4851 || bfd_bread (buf
, 8, abfd
) != 8)
4854 abfd
->start_address
= bfd_h_get_64 (abfd
, buf
);
4862 bfd_mach_o_set_arch_mach (bfd
*abfd
,
4863 enum bfd_architecture arch
,
4864 unsigned long machine
)
4866 bfd_mach_o_backend_data
*bed
= bfd_mach_o_get_backend_data (abfd
);
4868 /* If this isn't the right architecture for this backend, and this
4869 isn't the generic backend, fail. */
4870 if (arch
!= bed
->arch
4871 && arch
!= bfd_arch_unknown
4872 && bed
->arch
!= bfd_arch_unknown
)
4875 return bfd_default_set_arch_mach (abfd
, arch
, machine
);
4879 bfd_mach_o_scan (bfd
*abfd
,
4880 bfd_mach_o_header
*header
,
4881 bfd_mach_o_data_struct
*mdata
)
4884 enum bfd_architecture cputype
;
4885 unsigned long cpusubtype
;
4886 unsigned int hdrsize
;
4888 hdrsize
= mach_o_wide_p (header
) ?
4889 BFD_MACH_O_HEADER_64_SIZE
: BFD_MACH_O_HEADER_SIZE
;
4891 mdata
->header
= *header
;
4893 abfd
->flags
= abfd
->flags
& BFD_IN_MEMORY
;
4894 switch (header
->filetype
)
4896 case BFD_MACH_O_MH_OBJECT
:
4897 abfd
->flags
|= HAS_RELOC
;
4899 case BFD_MACH_O_MH_EXECUTE
:
4900 abfd
->flags
|= EXEC_P
;
4902 case BFD_MACH_O_MH_DYLIB
:
4903 case BFD_MACH_O_MH_BUNDLE
:
4904 abfd
->flags
|= DYNAMIC
;
4908 abfd
->tdata
.mach_o_data
= mdata
;
4910 bfd_mach_o_convert_architecture (header
->cputype
, header
->cpusubtype
,
4911 &cputype
, &cpusubtype
);
4912 if (cputype
== bfd_arch_unknown
)
4914 (*_bfd_error_handler
)
4915 (_("bfd_mach_o_scan: unknown architecture 0x%lx/0x%lx"),
4916 header
->cputype
, header
->cpusubtype
);
4920 bfd_set_arch_mach (abfd
, cputype
, cpusubtype
);
4922 if (header
->ncmds
!= 0)
4924 bfd_mach_o_load_command
*cmd
;
4926 mdata
->first_command
= NULL
;
4927 mdata
->last_command
= NULL
;
4929 cmd
= bfd_alloc2 (abfd
, header
->ncmds
, sizeof (bfd_mach_o_load_command
));
4933 for (i
= 0; i
< header
->ncmds
; i
++)
4935 bfd_mach_o_load_command
*cur
= &cmd
[i
];
4937 bfd_mach_o_append_command (abfd
, cur
);
4940 cur
->offset
= hdrsize
;
4943 bfd_mach_o_load_command
*prev
= &cmd
[i
- 1];
4944 cur
->offset
= prev
->offset
+ prev
->len
;
4947 if (!bfd_mach_o_read_command (abfd
, cur
))
4952 /* Sections should be flatten before scanning start address. */
4953 bfd_mach_o_flatten_sections (abfd
);
4954 if (!bfd_mach_o_scan_start_address (abfd
))
4961 bfd_mach_o_mkobject_init (bfd
*abfd
)
4963 bfd_mach_o_data_struct
*mdata
= NULL
;
4965 mdata
= bfd_zalloc (abfd
, sizeof (bfd_mach_o_data_struct
));
4968 abfd
->tdata
.mach_o_data
= mdata
;
4970 mdata
->header
.magic
= 0;
4971 mdata
->header
.cputype
= 0;
4972 mdata
->header
.cpusubtype
= 0;
4973 mdata
->header
.filetype
= 0;
4974 mdata
->header
.ncmds
= 0;
4975 mdata
->header
.sizeofcmds
= 0;
4976 mdata
->header
.flags
= 0;
4977 mdata
->header
.byteorder
= BFD_ENDIAN_UNKNOWN
;
4978 mdata
->first_command
= NULL
;
4979 mdata
->last_command
= NULL
;
4981 mdata
->sections
= NULL
;
4982 mdata
->dyn_reloc_cache
= NULL
;
4988 bfd_mach_o_gen_mkobject (bfd
*abfd
)
4990 bfd_mach_o_data_struct
*mdata
;
4992 if (!bfd_mach_o_mkobject_init (abfd
))
4995 mdata
= bfd_mach_o_get_data (abfd
);
4996 mdata
->header
.magic
= BFD_MACH_O_MH_MAGIC
;
4997 mdata
->header
.cputype
= 0;
4998 mdata
->header
.cpusubtype
= 0;
4999 mdata
->header
.byteorder
= abfd
->xvec
->byteorder
;
5000 mdata
->header
.version
= 1;
5006 bfd_mach_o_header_p (bfd
*abfd
,
5008 bfd_mach_o_filetype filetype
,
5009 bfd_mach_o_cpu_type cputype
)
5011 bfd_mach_o_header header
;
5012 bfd_mach_o_data_struct
*mdata
;
5014 if (!bfd_mach_o_read_header (abfd
, hdr_off
, &header
))
5017 if (! (header
.byteorder
== BFD_ENDIAN_BIG
5018 || header
.byteorder
== BFD_ENDIAN_LITTLE
))
5020 (*_bfd_error_handler
) (_("unknown header byte-order value 0x%lx"),
5021 (unsigned long) header
.byteorder
);
5025 if (! ((header
.byteorder
== BFD_ENDIAN_BIG
5026 && abfd
->xvec
->byteorder
== BFD_ENDIAN_BIG
5027 && abfd
->xvec
->header_byteorder
== BFD_ENDIAN_BIG
)
5028 || (header
.byteorder
== BFD_ENDIAN_LITTLE
5029 && abfd
->xvec
->byteorder
== BFD_ENDIAN_LITTLE
5030 && abfd
->xvec
->header_byteorder
== BFD_ENDIAN_LITTLE
)))
5033 /* Check cputype and filetype.
5034 In case of wildcard, do not accept magics that are handled by existing
5038 if (header
.cputype
!= cputype
)
5044 /* Do not recognize 64 architectures if not configured for 64bit targets.
5045 This could happen only for generic targets. */
5046 if (mach_o_wide_p (&header
))
5053 if (header
.filetype
!= filetype
)
5058 switch (header
.filetype
)
5060 case BFD_MACH_O_MH_CORE
:
5061 /* Handled by core_p */
5068 mdata
= (bfd_mach_o_data_struct
*) bfd_zalloc (abfd
, sizeof (*mdata
));
5071 mdata
->hdr_offset
= hdr_off
;
5073 if (!bfd_mach_o_scan (abfd
, &header
, mdata
))
5079 bfd_set_error (bfd_error_wrong_format
);
5085 static const bfd_target
*
5086 bfd_mach_o_gen_object_p (bfd
*abfd
)
5088 return bfd_mach_o_header_p (abfd
, 0, 0, 0);
5091 static const bfd_target
*
5092 bfd_mach_o_gen_core_p (bfd
*abfd
)
5094 return bfd_mach_o_header_p (abfd
, 0, BFD_MACH_O_MH_CORE
, 0);
5097 /* Return the base address of ABFD, ie the address at which the image is
5098 mapped. The possible initial pagezero is ignored. */
5101 bfd_mach_o_get_base_address (bfd
*abfd
)
5103 bfd_mach_o_data_struct
*mdata
;
5104 bfd_mach_o_load_command
*cmd
;
5106 /* Check for Mach-O. */
5107 if (!bfd_mach_o_valid (abfd
))
5109 mdata
= bfd_mach_o_get_data (abfd
);
5111 for (cmd
= mdata
->first_command
; cmd
!= NULL
; cmd
= cmd
->next
)
5113 if ((cmd
->type
== BFD_MACH_O_LC_SEGMENT
5114 || cmd
->type
== BFD_MACH_O_LC_SEGMENT_64
))
5116 struct bfd_mach_o_segment_command
*segcmd
= &cmd
->command
.segment
;
5118 if (segcmd
->initprot
!= 0)
5119 return segcmd
->vmaddr
;
5125 typedef struct mach_o_fat_archentry
5127 unsigned long cputype
;
5128 unsigned long cpusubtype
;
5129 unsigned long offset
;
5131 unsigned long align
;
5132 } mach_o_fat_archentry
;
5134 typedef struct mach_o_fat_data_struct
5136 unsigned long magic
;
5137 unsigned long nfat_arch
;
5138 mach_o_fat_archentry
*archentries
;
5139 } mach_o_fat_data_struct
;
5142 bfd_mach_o_fat_archive_p (bfd
*abfd
)
5144 mach_o_fat_data_struct
*adata
= NULL
;
5145 struct mach_o_fat_header_external hdr
;
5148 if (bfd_seek (abfd
, 0, SEEK_SET
) != 0
5149 || bfd_bread (&hdr
, sizeof (hdr
), abfd
) != sizeof (hdr
))
5152 adata
= bfd_alloc (abfd
, sizeof (mach_o_fat_data_struct
));
5156 adata
->magic
= bfd_getb32 (hdr
.magic
);
5157 adata
->nfat_arch
= bfd_getb32 (hdr
.nfat_arch
);
5158 if (adata
->magic
!= 0xcafebabe)
5160 /* Avoid matching Java bytecode files, which have the same magic number.
5161 In the Java bytecode file format this field contains the JVM version,
5162 which starts at 43.0. */
5163 if (adata
->nfat_arch
> 30)
5166 adata
->archentries
=
5167 bfd_alloc2 (abfd
, adata
->nfat_arch
, sizeof (mach_o_fat_archentry
));
5168 if (adata
->archentries
== NULL
)
5171 for (i
= 0; i
< adata
->nfat_arch
; i
++)
5173 struct mach_o_fat_arch_external arch
;
5174 if (bfd_bread (&arch
, sizeof (arch
), abfd
) != sizeof (arch
))
5176 adata
->archentries
[i
].cputype
= bfd_getb32 (arch
.cputype
);
5177 adata
->archentries
[i
].cpusubtype
= bfd_getb32 (arch
.cpusubtype
);
5178 adata
->archentries
[i
].offset
= bfd_getb32 (arch
.offset
);
5179 adata
->archentries
[i
].size
= bfd_getb32 (arch
.size
);
5180 adata
->archentries
[i
].align
= bfd_getb32 (arch
.align
);
5183 abfd
->tdata
.mach_o_fat_data
= adata
;
5189 bfd_release (abfd
, adata
);
5190 bfd_set_error (bfd_error_wrong_format
);
5194 /* Set the filename for a fat binary member ABFD, whose bfd architecture is
5195 ARCH_TYPE/ARCH_SUBTYPE and corresponding entry in header is ENTRY.
5196 Set arelt_data and origin fields too. */
5199 bfd_mach_o_fat_member_init (bfd
*abfd
,
5200 enum bfd_architecture arch_type
,
5201 unsigned long arch_subtype
,
5202 mach_o_fat_archentry
*entry
)
5204 struct areltdata
*areltdata
;
5205 /* Create the member filename. Use ARCH_NAME. */
5206 const bfd_arch_info_type
*ap
= bfd_lookup_arch (arch_type
, arch_subtype
);
5210 /* Use the architecture name if known. */
5211 abfd
->filename
= xstrdup (ap
->printable_name
);
5215 /* Forge a uniq id. */
5216 const size_t namelen
= 2 + 8 + 1 + 2 + 8 + 1;
5217 char *name
= xmalloc (namelen
);
5218 snprintf (name
, namelen
, "0x%lx-0x%lx",
5219 entry
->cputype
, entry
->cpusubtype
);
5220 abfd
->filename
= name
;
5223 areltdata
= bfd_zmalloc (sizeof (struct areltdata
));
5224 areltdata
->parsed_size
= entry
->size
;
5225 abfd
->arelt_data
= areltdata
;
5226 abfd
->iostream
= NULL
;
5227 abfd
->origin
= entry
->offset
;
5231 bfd_mach_o_fat_openr_next_archived_file (bfd
*archive
, bfd
*prev
)
5233 mach_o_fat_data_struct
*adata
;
5234 mach_o_fat_archentry
*entry
= NULL
;
5237 enum bfd_architecture arch_type
;
5238 unsigned long arch_subtype
;
5240 adata
= (mach_o_fat_data_struct
*) archive
->tdata
.mach_o_fat_data
;
5241 BFD_ASSERT (adata
!= NULL
);
5243 /* Find index of previous entry. */
5246 /* Start at first one. */
5251 /* Find index of PREV. */
5252 for (i
= 0; i
< adata
->nfat_arch
; i
++)
5254 if (adata
->archentries
[i
].offset
== prev
->origin
)
5258 if (i
== adata
->nfat_arch
)
5261 bfd_set_error (bfd_error_bad_value
);
5265 /* Get next entry. */
5269 if (i
>= adata
->nfat_arch
)
5271 bfd_set_error (bfd_error_no_more_archived_files
);
5275 entry
= &adata
->archentries
[i
];
5276 nbfd
= _bfd_new_bfd_contained_in (archive
);
5280 bfd_mach_o_convert_architecture (entry
->cputype
, entry
->cpusubtype
,
5281 &arch_type
, &arch_subtype
);
5283 bfd_mach_o_fat_member_init (nbfd
, arch_type
, arch_subtype
, entry
);
5285 bfd_set_arch_mach (nbfd
, arch_type
, arch_subtype
);
5290 /* Analogous to stat call. */
5293 bfd_mach_o_fat_stat_arch_elt (bfd
*abfd
, struct stat
*buf
)
5295 if (abfd
->arelt_data
== NULL
)
5297 bfd_set_error (bfd_error_invalid_operation
);
5304 buf
->st_mode
= 0644;
5305 buf
->st_size
= arelt_size (abfd
);
5310 /* If ABFD format is FORMAT and architecture is ARCH, return it.
5311 If ABFD is a fat image containing a member that corresponds to FORMAT
5312 and ARCH, returns it.
5313 In other case, returns NULL.
5314 This function allows transparent uses of fat images. */
5317 bfd_mach_o_fat_extract (bfd
*abfd
,
5319 const bfd_arch_info_type
*arch
)
5322 mach_o_fat_data_struct
*adata
;
5325 if (bfd_check_format (abfd
, format
))
5327 if (bfd_get_arch_info (abfd
) == arch
)
5331 if (!bfd_check_format (abfd
, bfd_archive
)
5332 || abfd
->xvec
!= &mach_o_fat_vec
)
5335 /* This is a Mach-O fat image. */
5336 adata
= (mach_o_fat_data_struct
*) abfd
->tdata
.mach_o_fat_data
;
5337 BFD_ASSERT (adata
!= NULL
);
5339 for (i
= 0; i
< adata
->nfat_arch
; i
++)
5341 struct mach_o_fat_archentry
*e
= &adata
->archentries
[i
];
5342 enum bfd_architecture cpu_type
;
5343 unsigned long cpu_subtype
;
5345 bfd_mach_o_convert_architecture (e
->cputype
, e
->cpusubtype
,
5346 &cpu_type
, &cpu_subtype
);
5347 if (cpu_type
!= arch
->arch
|| cpu_subtype
!= arch
->mach
)
5350 /* The architecture is found. */
5351 res
= _bfd_new_bfd_contained_in (abfd
);
5355 bfd_mach_o_fat_member_init (res
, cpu_type
, cpu_subtype
, e
);
5357 if (bfd_check_format (res
, format
))
5359 BFD_ASSERT (bfd_get_arch_info (res
) == arch
);
5370 bfd_mach_o_lookup_command (bfd
*abfd
,
5371 bfd_mach_o_load_command_type type
,
5372 bfd_mach_o_load_command
**mcommand
)
5374 struct mach_o_data_struct
*mdata
= bfd_mach_o_get_data (abfd
);
5375 struct bfd_mach_o_load_command
*cmd
;
5378 BFD_ASSERT (mdata
!= NULL
);
5379 BFD_ASSERT (mcommand
!= NULL
);
5382 for (cmd
= mdata
->first_command
; cmd
!= NULL
; cmd
= cmd
->next
)
5384 if (cmd
->type
!= type
)
5396 bfd_mach_o_stack_addr (enum bfd_mach_o_cpu_type type
)
5400 case BFD_MACH_O_CPU_TYPE_MC680x0
:
5402 case BFD_MACH_O_CPU_TYPE_MC88000
:
5404 case BFD_MACH_O_CPU_TYPE_POWERPC
:
5406 case BFD_MACH_O_CPU_TYPE_I386
:
5408 case BFD_MACH_O_CPU_TYPE_SPARC
:
5410 case BFD_MACH_O_CPU_TYPE_I860
:
5412 case BFD_MACH_O_CPU_TYPE_HPPA
:
5413 return 0xc0000000 - 0x04000000;
5419 /* The following two tables should be kept, as far as possible, in order of
5420 most frequently used entries to optimize their use from gas. */
5422 const bfd_mach_o_xlat_name bfd_mach_o_section_type_name
[] =
5424 { "regular", BFD_MACH_O_S_REGULAR
},
5425 { "coalesced", BFD_MACH_O_S_COALESCED
},
5426 { "zerofill", BFD_MACH_O_S_ZEROFILL
},
5427 { "cstring_literals", BFD_MACH_O_S_CSTRING_LITERALS
},
5428 { "4byte_literals", BFD_MACH_O_S_4BYTE_LITERALS
},
5429 { "8byte_literals", BFD_MACH_O_S_8BYTE_LITERALS
},
5430 { "16byte_literals", BFD_MACH_O_S_16BYTE_LITERALS
},
5431 { "literal_pointers", BFD_MACH_O_S_LITERAL_POINTERS
},
5432 { "mod_init_func_pointers", BFD_MACH_O_S_MOD_INIT_FUNC_POINTERS
},
5433 { "mod_fini_func_pointers", BFD_MACH_O_S_MOD_FINI_FUNC_POINTERS
},
5434 { "gb_zerofill", BFD_MACH_O_S_GB_ZEROFILL
},
5435 { "interposing", BFD_MACH_O_S_INTERPOSING
},
5436 { "dtrace_dof", BFD_MACH_O_S_DTRACE_DOF
},
5437 { "non_lazy_symbol_pointers", BFD_MACH_O_S_NON_LAZY_SYMBOL_POINTERS
},
5438 { "lazy_symbol_pointers", BFD_MACH_O_S_LAZY_SYMBOL_POINTERS
},
5439 { "symbol_stubs", BFD_MACH_O_S_SYMBOL_STUBS
},
5440 { "lazy_dylib_symbol_pointers", BFD_MACH_O_S_LAZY_DYLIB_SYMBOL_POINTERS
},
5444 const bfd_mach_o_xlat_name bfd_mach_o_section_attribute_name
[] =
5446 { "pure_instructions", BFD_MACH_O_S_ATTR_PURE_INSTRUCTIONS
},
5447 { "some_instructions", BFD_MACH_O_S_ATTR_SOME_INSTRUCTIONS
},
5448 { "loc_reloc", BFD_MACH_O_S_ATTR_LOC_RELOC
},
5449 { "ext_reloc", BFD_MACH_O_S_ATTR_EXT_RELOC
},
5450 { "debug", BFD_MACH_O_S_ATTR_DEBUG
},
5451 { "live_support", BFD_MACH_O_S_ATTR_LIVE_SUPPORT
},
5452 { "no_dead_strip", BFD_MACH_O_S_ATTR_NO_DEAD_STRIP
},
5453 { "strip_static_syms", BFD_MACH_O_S_ATTR_STRIP_STATIC_SYMS
},
5454 { "no_toc", BFD_MACH_O_S_ATTR_NO_TOC
},
5455 { "self_modifying_code", BFD_MACH_O_S_SELF_MODIFYING_CODE
},
5456 { "modifying_code", BFD_MACH_O_S_SELF_MODIFYING_CODE
},
5460 /* Get the section type from NAME. Return 256 if NAME is unknown. */
5463 bfd_mach_o_get_section_type_from_name (bfd
*abfd
, const char *name
)
5465 const bfd_mach_o_xlat_name
*x
;
5466 bfd_mach_o_backend_data
*bed
= bfd_mach_o_get_backend_data (abfd
);
5468 for (x
= bfd_mach_o_section_type_name
; x
->name
; x
++)
5469 if (strcmp (x
->name
, name
) == 0)
5471 /* We found it... does the target support it? */
5472 if (bed
->bfd_mach_o_section_type_valid_for_target
== NULL
5473 || bed
->bfd_mach_o_section_type_valid_for_target (x
->val
))
5474 return x
->val
; /* OK. */
5476 break; /* Not supported. */
5478 /* Maximum section ID = 0xff. */
5482 /* Get the section attribute from NAME. Return -1 if NAME is unknown. */
5485 bfd_mach_o_get_section_attribute_from_name (const char *name
)
5487 const bfd_mach_o_xlat_name
*x
;
5489 for (x
= bfd_mach_o_section_attribute_name
; x
->name
; x
++)
5490 if (strcmp (x
->name
, name
) == 0)
5492 return (unsigned int)-1;
5496 bfd_mach_o_core_fetch_environment (bfd
*abfd
,
5497 unsigned char **rbuf
,
5500 bfd_mach_o_data_struct
*mdata
= bfd_mach_o_get_data (abfd
);
5501 unsigned long stackaddr
= bfd_mach_o_stack_addr (mdata
->header
.cputype
);
5502 bfd_mach_o_load_command
*cmd
;
5504 for (cmd
= mdata
->first_command
; cmd
!= NULL
; cmd
= cmd
->next
)
5506 bfd_mach_o_segment_command
*seg
;
5508 if (cmd
->type
!= BFD_MACH_O_LC_SEGMENT
)
5511 seg
= &cmd
->command
.segment
;
5513 if ((seg
->vmaddr
+ seg
->vmsize
) == stackaddr
)
5515 unsigned long start
= seg
->fileoff
;
5516 unsigned long end
= seg
->fileoff
+ seg
->filesize
;
5517 unsigned char *buf
= bfd_malloc (1024);
5518 unsigned long size
= 1024;
5522 bfd_size_type nread
= 0;
5523 unsigned long offset
;
5524 int found_nonnull
= 0;
5526 if (size
> (end
- start
))
5527 size
= (end
- start
);
5529 buf
= bfd_realloc_or_free (buf
, size
);
5533 if (bfd_seek (abfd
, end
- size
, SEEK_SET
) != 0)
5539 nread
= bfd_bread (buf
, size
, abfd
);
5547 for (offset
= 4; offset
<= size
; offset
+= 4)
5551 val
= *((unsigned long *) (buf
+ size
- offset
));
5552 if (! found_nonnull
)
5557 else if (val
== 0x0)
5559 unsigned long bottom
;
5562 bottom
= seg
->fileoff
+ seg
->filesize
- offset
;
5563 top
= seg
->fileoff
+ seg
->filesize
- 4;
5564 *rbuf
= bfd_malloc (top
- bottom
);
5565 *rlen
= top
- bottom
;
5567 memcpy (*rbuf
, buf
+ size
- *rlen
, *rlen
);
5573 if (size
== (end
- start
))
5587 bfd_mach_o_core_file_failing_command (bfd
*abfd
)
5589 unsigned char *buf
= NULL
;
5590 unsigned int len
= 0;
5593 ret
= bfd_mach_o_core_fetch_environment (abfd
, &buf
, &len
);
5597 return (char *) buf
;
5601 bfd_mach_o_core_file_failing_signal (bfd
*abfd ATTRIBUTE_UNUSED
)
5606 static bfd_mach_o_uuid_command
*
5607 bfd_mach_o_lookup_uuid_command (bfd
*abfd
)
5609 bfd_mach_o_load_command
*uuid_cmd
;
5610 int ncmd
= bfd_mach_o_lookup_command (abfd
, BFD_MACH_O_LC_UUID
, &uuid_cmd
);
5613 return &uuid_cmd
->command
.uuid
;
5616 /* Return true if ABFD is a dSYM file and its UUID matches UUID_CMD. */
5619 bfd_mach_o_dsym_for_uuid_p (bfd
*abfd
, const bfd_mach_o_uuid_command
*uuid_cmd
)
5621 bfd_mach_o_uuid_command
*dsym_uuid_cmd
;
5624 BFD_ASSERT (uuid_cmd
);
5626 if (!bfd_check_format (abfd
, bfd_object
))
5629 if (bfd_get_flavour (abfd
) != bfd_target_mach_o_flavour
5630 || bfd_mach_o_get_data (abfd
) == NULL
5631 || bfd_mach_o_get_data (abfd
)->header
.filetype
!= BFD_MACH_O_MH_DSYM
)
5634 dsym_uuid_cmd
= bfd_mach_o_lookup_uuid_command (abfd
);
5635 if (dsym_uuid_cmd
== NULL
)
5638 if (memcmp (uuid_cmd
->uuid
, dsym_uuid_cmd
->uuid
,
5639 sizeof (uuid_cmd
->uuid
)) != 0)
5645 /* Find a BFD in DSYM_FILENAME which matches ARCH and UUID_CMD.
5646 The caller is responsible for closing the returned BFD object and
5647 its my_archive if the returned BFD is in a fat dSYM. */
5650 bfd_mach_o_find_dsym (const char *dsym_filename
,
5651 const bfd_mach_o_uuid_command
*uuid_cmd
,
5652 const bfd_arch_info_type
*arch
)
5654 bfd
*base_dsym_bfd
, *dsym_bfd
;
5656 BFD_ASSERT (uuid_cmd
);
5658 base_dsym_bfd
= bfd_openr (dsym_filename
, NULL
);
5659 if (base_dsym_bfd
== NULL
)
5662 dsym_bfd
= bfd_mach_o_fat_extract (base_dsym_bfd
, bfd_object
, arch
);
5663 if (bfd_mach_o_dsym_for_uuid_p (dsym_bfd
, uuid_cmd
))
5666 bfd_close (dsym_bfd
);
5667 if (base_dsym_bfd
!= dsym_bfd
)
5668 bfd_close (base_dsym_bfd
);
5673 /* Return a BFD created from a dSYM file for ABFD.
5674 The caller is responsible for closing the returned BFD object, its
5675 filename, and its my_archive if the returned BFD is in a fat dSYM. */
5678 bfd_mach_o_follow_dsym (bfd
*abfd
)
5680 char *dsym_filename
;
5681 bfd_mach_o_uuid_command
*uuid_cmd
;
5682 bfd
*dsym_bfd
, *base_bfd
= abfd
;
5683 const char *base_basename
;
5685 if (abfd
== NULL
|| bfd_get_flavour (abfd
) != bfd_target_mach_o_flavour
)
5688 if (abfd
->my_archive
)
5689 base_bfd
= abfd
->my_archive
;
5690 /* BFD may have been opened from a stream. */
5691 if (base_bfd
->filename
== NULL
)
5693 bfd_set_error (bfd_error_invalid_operation
);
5696 base_basename
= lbasename (base_bfd
->filename
);
5698 uuid_cmd
= bfd_mach_o_lookup_uuid_command (abfd
);
5699 if (uuid_cmd
== NULL
)
5702 /* TODO: We assume the DWARF file has the same as the binary's.
5703 It seems apple's GDB checks all files in the dSYM bundle directory.
5704 http://opensource.apple.com/source/gdb/gdb-1708/src/gdb/macosx/macosx-tdep.c
5706 dsym_filename
= (char *)bfd_malloc (strlen (base_bfd
->filename
)
5707 + strlen (dsym_subdir
) + 1
5708 + strlen (base_basename
) + 1);
5709 sprintf (dsym_filename
, "%s%s/%s",
5710 base_bfd
->filename
, dsym_subdir
, base_basename
);
5712 dsym_bfd
= bfd_mach_o_find_dsym (dsym_filename
, uuid_cmd
,
5713 bfd_get_arch_info (abfd
));
5714 if (dsym_bfd
== NULL
)
5715 free (dsym_filename
);
5721 bfd_mach_o_find_nearest_line (bfd
*abfd
,
5725 const char **filename_ptr
,
5726 const char **functionname_ptr
,
5727 unsigned int *line_ptr
,
5728 unsigned int *discriminator_ptr
)
5730 bfd_mach_o_data_struct
*mdata
= bfd_mach_o_get_data (abfd
);
5733 switch (mdata
->header
.filetype
)
5735 case BFD_MACH_O_MH_OBJECT
:
5737 case BFD_MACH_O_MH_EXECUTE
:
5738 case BFD_MACH_O_MH_DYLIB
:
5739 case BFD_MACH_O_MH_BUNDLE
:
5740 case BFD_MACH_O_MH_KEXT_BUNDLE
:
5741 if (mdata
->dwarf2_find_line_info
== NULL
)
5743 mdata
->dsym_bfd
= bfd_mach_o_follow_dsym (abfd
);
5744 /* When we couldn't find dSYM for this binary, we look for
5745 the debug information in the binary itself. In this way,
5746 we won't try finding separated dSYM again because
5747 mdata->dwarf2_find_line_info will be filled. */
5748 if (! mdata
->dsym_bfd
)
5750 if (! _bfd_dwarf2_slurp_debug_info (abfd
, mdata
->dsym_bfd
,
5751 dwarf_debug_sections
, symbols
,
5752 &mdata
->dwarf2_find_line_info
,
5760 return _bfd_dwarf2_find_nearest_line (abfd
, symbols
, NULL
, section
, offset
,
5761 filename_ptr
, functionname_ptr
,
5762 line_ptr
, discriminator_ptr
,
5763 dwarf_debug_sections
, 0,
5764 &mdata
->dwarf2_find_line_info
);
5768 bfd_mach_o_close_and_cleanup (bfd
*abfd
)
5770 bfd_mach_o_data_struct
*mdata
= bfd_mach_o_get_data (abfd
);
5771 if (bfd_get_format (abfd
) == bfd_object
&& mdata
!= NULL
)
5773 _bfd_dwarf2_cleanup_debug_info (abfd
, &mdata
->dwarf2_find_line_info
);
5774 bfd_mach_o_free_cached_info (abfd
);
5775 if (mdata
->dsym_bfd
!= NULL
)
5777 bfd
*fat_bfd
= mdata
->dsym_bfd
->my_archive
;
5778 char *dsym_filename
= (char *)(fat_bfd
5780 : mdata
->dsym_bfd
->filename
);
5781 bfd_close (mdata
->dsym_bfd
);
5782 mdata
->dsym_bfd
= NULL
;
5784 bfd_close (fat_bfd
);
5785 free (dsym_filename
);
5789 return _bfd_generic_close_and_cleanup (abfd
);
5792 bfd_boolean
bfd_mach_o_free_cached_info (bfd
*abfd
)
5794 bfd_mach_o_data_struct
*mdata
= bfd_mach_o_get_data (abfd
);
5796 free (mdata
->dyn_reloc_cache
);
5797 mdata
->dyn_reloc_cache
= NULL
;
5798 for (asect
= abfd
->sections
; asect
!= NULL
; asect
= asect
->next
)
5800 free (asect
->relocation
);
5801 asect
->relocation
= NULL
;
5807 #define bfd_mach_o_bfd_reloc_type_lookup _bfd_norelocs_bfd_reloc_type_lookup
5808 #define bfd_mach_o_bfd_reloc_name_lookup _bfd_norelocs_bfd_reloc_name_lookup
5810 #define bfd_mach_o_swap_reloc_in NULL
5811 #define bfd_mach_o_swap_reloc_out NULL
5812 #define bfd_mach_o_print_thread NULL
5813 #define bfd_mach_o_tgt_seg_table NULL
5814 #define bfd_mach_o_section_type_valid_for_tgt NULL
5816 #define TARGET_NAME mach_o_be_vec
5817 #define TARGET_STRING "mach-o-be"
5818 #define TARGET_ARCHITECTURE bfd_arch_unknown
5819 #define TARGET_PAGESIZE 1
5820 #define TARGET_BIG_ENDIAN 1
5821 #define TARGET_ARCHIVE 0
5822 #define TARGET_PRIORITY 1
5823 #include "mach-o-target.c"
5826 #undef TARGET_STRING
5827 #undef TARGET_ARCHITECTURE
5828 #undef TARGET_PAGESIZE
5829 #undef TARGET_BIG_ENDIAN
5830 #undef TARGET_ARCHIVE
5831 #undef TARGET_PRIORITY
5833 #define TARGET_NAME mach_o_le_vec
5834 #define TARGET_STRING "mach-o-le"
5835 #define TARGET_ARCHITECTURE bfd_arch_unknown
5836 #define TARGET_PAGESIZE 1
5837 #define TARGET_BIG_ENDIAN 0
5838 #define TARGET_ARCHIVE 0
5839 #define TARGET_PRIORITY 1
5841 #include "mach-o-target.c"
5844 #undef TARGET_STRING
5845 #undef TARGET_ARCHITECTURE
5846 #undef TARGET_PAGESIZE
5847 #undef TARGET_BIG_ENDIAN
5848 #undef TARGET_ARCHIVE
5849 #undef TARGET_PRIORITY
5851 /* Not yet handled: creating an archive. */
5852 #define bfd_mach_o_mkarchive _bfd_noarchive_mkarchive
5854 #define bfd_mach_o_close_and_cleanup bfd_true
5857 #define bfd_mach_o_generic_stat_arch_elt bfd_mach_o_fat_stat_arch_elt
5858 #define bfd_mach_o_openr_next_archived_file bfd_mach_o_fat_openr_next_archived_file
5859 #define bfd_mach_o_archive_p bfd_mach_o_fat_archive_p
5861 #define TARGET_NAME mach_o_fat_vec
5862 #define TARGET_STRING "mach-o-fat"
5863 #define TARGET_ARCHITECTURE bfd_arch_unknown
5864 #define TARGET_PAGESIZE 1
5865 #define TARGET_BIG_ENDIAN 1
5866 #define TARGET_ARCHIVE 1
5867 #define TARGET_PRIORITY 0
5869 #include "mach-o-target.c"
5872 #undef TARGET_STRING
5873 #undef TARGET_ARCHITECTURE
5874 #undef TARGET_PAGESIZE
5875 #undef TARGET_BIG_ENDIAN
5876 #undef TARGET_ARCHIVE
5877 #undef TARGET_PRIORITY