1 /* Mach-O object file format
2 Copyright 2009, 2011 Free Software Foundation, Inc.
4 This file is part of GAS, the GNU Assembler.
6 GAS is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as
8 published by the Free Software Foundation; either version 3,
9 or (at your option) any later version.
11 GAS is distributed in the hope that it will be useful, but
12 WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See
14 the GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with GAS; see the file COPYING. If not, write to the Free
18 Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA
21 /* Here we handle the mach-o directives that are common to all architectures.
23 Most significant are mach-o named sections and a variety of symbol type
26 /* Mach-O supports multiple, named segments each of which may contain
27 multiple named sections. Thus the concept of subsectioning is
28 handled by (say) having a __TEXT segment with appropriate flags from
29 which subsections are generated like __text, __const etc.
31 The well-known as short-hand section switch directives like .text, .data
32 etc. are mapped onto predefined segment/section pairs using facilites
33 supplied by the mach-o port of bfd.
35 A number of additional mach-o short-hand section switch directives are
38 #define OBJ_HEADER "obj-macho.h"
45 #include "mach-o/loader.h"
46 #include "obj-macho.h"
49 static segT
obj_mach_o_segT_from_bfd_name (const char *nam
, int must_succeed
);
51 /* TODO: Implement "-dynamic"/"-static" command line options. */
53 static int obj_mach_o_is_static
;
55 /* TODO: Implement the "-n" command line option to suppress the initial
56 switch to the text segment. */
57 static int obj_mach_o_start_with_text_section
= 1;
59 /* Allow for special re-ordering on output. */
61 static int obj_mach_o_seen_objc_section
;
63 /* Start-up: At present, just create the sections we want. */
67 /* Mach-O only defines the .text section by default, and even this can
68 be suppressed by a flag. In the latter event, the first code MUST
69 be a section definition. */
70 if (obj_mach_o_start_with_text_section
)
72 text_section
= obj_mach_o_segT_from_bfd_name (TEXT_SECTION_NAME
, 1);
73 subseg_set (text_section
, 0);
74 if (obj_mach_o_is_static
)
76 bfd_mach_o_section
*mo_sec
77 = bfd_mach_o_get_mach_o_section (text_section
);
78 mo_sec
->flags
&= ~BFD_MACH_O_S_ATTR_PURE_INSTRUCTIONS
;
83 /* Remember the subsections_by_symbols state in case we need to reset
85 static int obj_mach_o_subsections_by_symbols
;
88 obj_mach_o_weak (int ignore ATTRIBUTE_UNUSED
)
96 /* Get symbol name. */
97 name
= input_line_pointer
;
98 c
= get_symbol_end ();
99 symbolP
= symbol_find_or_make (name
);
100 S_SET_WEAK (symbolP
);
101 *input_line_pointer
= c
;
106 input_line_pointer
++;
109 while (*input_line_pointer
!= '\n');
110 demand_empty_rest_of_line ();
113 /* This will put at most 16 characters (terminated by a ',' or newline) from
114 the input stream into dest. If there are more than 16 chars before the
115 delimiter, a warning is given and the string is truncated. On completion of
116 this function, input_line_pointer will point to the char after the ',' or
119 It trims leading and trailing space. */
122 collect_16char_name (char *dest
, const char *msg
, int require_comma
)
127 namstart
= input_line_pointer
;
129 while ( (c
= *input_line_pointer
) != ','
130 && !is_end_of_line
[(unsigned char) c
])
131 input_line_pointer
++;
134 int len
= input_line_pointer
- namstart
; /* could be zero. */
135 /* lose any trailing space. */
136 while (len
> 0 && namstart
[len
-1] == ' ')
140 *input_line_pointer
= '\0'; /* make a temp string. */
141 as_bad (_("the %s name '%s' is too long (maximum 16 characters)"),
143 *input_line_pointer
= c
; /* restore for printing. */
147 memcpy (dest
, namstart
, len
);
150 if (c
!= ',' && require_comma
)
152 as_bad (_("expected a %s name followed by a `,'"), msg
);
161 The '.section' specification syntax looks like:
162 .section <segment> , <section> [, type [, attribs [, size]]]
164 White space is allowed everywhere between elements.
166 <segment> and <section> may be from 0 to 16 chars in length - they may
167 contain spaces but leading and trailing space will be trimmed. It is
168 mandatory that they be present (or that zero-length names are indicated
171 There is only a single section type for any entry.
173 There may be multiple attributes, they are delimited by `+'.
175 Not all section types and attributes are accepted by the Darwin system
176 assemblers as user-specifiable - although, at present, we do here. */
179 obj_mach_o_section (int ignore ATTRIBUTE_UNUSED
)
183 unsigned int sectype
= BFD_MACH_O_S_REGULAR
;
184 unsigned int defsectype
= BFD_MACH_O_S_REGULAR
;
185 unsigned int sectype_given
= 0;
186 unsigned int secattr
= 0;
187 unsigned int defsecattr
= 0;
188 int secattr_given
= 0;
189 unsigned int secalign
= 0;
190 offsetT sizeof_stub
= 0;
191 const mach_o_section_name_xlat
* xlat
;
193 flagword oldflags
, flags
;
195 bfd_mach_o_section
*msect
;
199 #ifdef md_flush_pending_output
200 md_flush_pending_output ();
203 /* Zero-length segment and section names are allowed. */
204 /* Parse segment name. */
205 memset (segname
, 0, sizeof(segname
));
206 if (collect_16char_name (segname
, "segment", 1))
208 ignore_rest_of_line ();
211 input_line_pointer
++; /* Skip the terminating ',' */
213 /* Parse section name. */
214 memset (sectname
, 0, sizeof(sectname
));
215 collect_16char_name (sectname
, "section", 0);
218 if (*input_line_pointer
== ',')
222 input_line_pointer
++;
224 p
= input_line_pointer
;
225 while ((c
= *input_line_pointer
) != ','
226 && !is_end_of_line
[(unsigned char) c
])
227 input_line_pointer
++;
229 len
= input_line_pointer
- p
;
230 /* strip trailing spaces. */
231 while (len
> 0 && p
[len
-1] == ' ')
235 /* Temporarily make a string from the token. */
237 sectype
= bfd_mach_o_get_section_type_from_name (stdoutput
, p
);
238 if (sectype
> 255) /* Max Section ID == 255. */
240 as_bad (_("unknown or invalid section type '%s'"), p
);
242 ignore_rest_of_line ();
251 TODO: check validity of attributes for section type. */
252 if (sectype_given
&& c
== ',')
258 /* Skip initial `,' and subsequent `+'. */
259 input_line_pointer
++;
261 p
= input_line_pointer
;
262 while ((c
= *input_line_pointer
) != '+'
264 && !is_end_of_line
[(unsigned char) c
])
265 input_line_pointer
++;
267 len
= input_line_pointer
- p
;
268 /* strip trailing spaces. */
269 while (len
> 0 && p
[len
-1] == ' ')
273 /* Temporarily make a string from the token. */
275 attr
= bfd_mach_o_get_section_attribute_from_name (p
);
278 as_bad (_("unknown or invalid section attribute '%s'"), p
);
280 ignore_rest_of_line ();
291 while (*input_line_pointer
== '+');
293 /* Parse sizeof_stub. */
294 if (secattr_given
&& *input_line_pointer
== ',')
296 if (sectype
!= BFD_MACH_O_S_SYMBOL_STUBS
)
298 as_bad (_("unexpected section size information"));
299 ignore_rest_of_line ();
303 input_line_pointer
++;
304 sizeof_stub
= get_absolute_expression ();
306 else if (secattr_given
&& sectype
== BFD_MACH_O_S_SYMBOL_STUBS
)
308 as_bad (_("missing sizeof_stub expression"));
309 ignore_rest_of_line ();
315 flags
= SEC_NO_FLAGS
;
316 /* This provides default bfd flags and default mach-o section type and
317 attributes along with the canonical name. */
318 xlat
= bfd_mach_o_section_data_for_mach_sect (stdoutput
, segname
, sectname
);
321 name
= xstrdup (xlat
->bfd_name
);
322 flags
= xlat
->bfd_flags
;
323 defsectype
= xlat
->macho_sectype
;
324 defsecattr
= xlat
->macho_secattr
;
325 secalign
= xlat
->sectalign
;
329 /* There is no normal BFD section name for this section. Create one.
330 The name created doesn't really matter as it will never be written
332 size_t seglen
= strlen (segname
);
333 size_t sectlen
= strlen (sectname
);
336 n
= xmalloc (seglen
+ 1 + sectlen
+ 1);
337 memcpy (n
, segname
, seglen
);
339 memcpy (n
+ seglen
+ 1, sectname
, sectlen
);
340 n
[seglen
+ 1 + sectlen
] = 0;
344 /* Sub-segments don't exists as is on Mach-O. */
345 sec
= subseg_new (name
, 0);
347 oldflags
= bfd_get_section_flags (stdoutput
, sec
);
348 msect
= bfd_mach_o_get_mach_o_section (sec
);
349 if (oldflags
== SEC_NO_FLAGS
)
351 if (! bfd_set_section_flags (stdoutput
, sec
, flags
))
352 as_warn (_("error setting flags for \"%s\": %s"),
353 bfd_section_name (stdoutput
, sec
),
354 bfd_errmsg (bfd_get_error ()));
355 strncpy (msect
->segname
, segname
, sizeof (msect
->segname
));
356 msect
->segname
[16] = 0;
357 strncpy (msect
->sectname
, sectname
, sizeof (msect
->sectname
));
358 msect
->sectname
[16] = 0;
359 msect
->align
= secalign
;
362 msect
->flags
= sectype
;
364 msect
->flags
|= secattr
;
366 msect
->flags
|= defsecattr
;
369 msect
->flags
= defsectype
| defsecattr
;
370 msect
->reserved2
= sizeof_stub
;
372 else if (flags
!= SEC_NO_FLAGS
)
374 if (flags
!= oldflags
375 || msect
->flags
!= (secattr
| sectype
))
376 as_warn (_("Ignoring changed section attributes for %s"), name
);
378 demand_empty_rest_of_line ();
382 obj_mach_o_segT_from_bfd_name (const char *nam
, int must_succeed
)
384 const mach_o_section_name_xlat
*xlat
;
388 /* BFD has tables of flags and default attributes for all the sections that
389 have a 'canonical' name. */
390 xlat
= bfd_mach_o_section_data_for_bfd_name (stdoutput
, nam
, &segn
);
394 as_fatal (_("BFD is out of sync with GAS, "
395 "unhandled well-known section type `%s'"), nam
);
399 sec
= bfd_get_section_by_name (stdoutput
, nam
);
402 bfd_mach_o_section
*msect
;
404 sec
= subseg_force_new (xlat
->bfd_name
, 0);
406 /* Set default type, attributes and alignment. */
407 msect
= bfd_mach_o_get_mach_o_section (sec
);
408 msect
->flags
= xlat
->macho_sectype
| xlat
->macho_secattr
;
409 msect
->align
= xlat
->sectalign
;
411 if ((msect
->flags
& BFD_MACH_O_SECTION_TYPE_MASK
)
412 == BFD_MACH_O_S_ZEROFILL
)
413 seg_info (sec
)->bss
= 1;
419 static const char * const known_sections
[] =
424 /* 2 */ ".static_const",
428 /* 6 */ ".literal16",
429 /* 7 */ ".constructor",
430 /* 8 */ ".destructor",
433 /* 10 */ ".const_data",
434 /* 11 */ ".static_data",
435 /* 12 */ ".mod_init_func",
436 /* 13 */ ".mod_term_func",
441 /* Interface for a known non-optional section directive. */
444 obj_mach_o_known_section (int sect_index
)
448 #ifdef md_flush_pending_output
449 md_flush_pending_output ();
452 section
= obj_mach_o_segT_from_bfd_name (known_sections
[sect_index
], 1);
454 subseg_set (section
, 0);
456 /* else, we leave the section as it was; there was a fatal error anyway. */
459 static const char * const objc_sections
[] =
462 /* 1 */ ".objc_class",
463 /* 2 */ ".objc_meta_class",
464 /* 3 */ ".objc_cat_cls_meth",
465 /* 4 */ ".objc_cat_inst_meth",
466 /* 5 */ ".objc_protocol",
467 /* 6 */ ".objc_string_object",
468 /* 7 */ ".objc_cls_meth",
469 /* 8 */ ".objc_inst_meth",
470 /* 9 */ ".objc_cls_refs",
471 /* 10 */ ".objc_message_refs",
472 /* 11 */ ".objc_symbols",
473 /* 12 */ ".objc_category",
474 /* 13 */ ".objc_class_vars",
475 /* 14 */ ".objc_instance_vars",
476 /* 15 */ ".objc_module_info",
477 /* 16 */ ".cstring", /* objc_class_names Alias for .cstring */
478 /* 17 */ ".cstring", /* Alias objc_meth_var_types for .cstring */
479 /* 18 */ ".cstring", /* objc_meth_var_names Alias for .cstring */
480 /* 19 */ ".objc_selector_strs",
481 /* 20 */ ".objc_image_info", /* extension. */
482 /* 21 */ ".objc_selector_fixup", /* extension. */
483 /* 22 */ ".objc1_class_ext", /* ObjC-1 extension. */
484 /* 23 */ ".objc1_property_list", /* ObjC-1 extension. */
485 /* 24 */ ".objc1_protocol_ext" /* ObjC-1 extension. */
488 /* This currently does the same as known_sections, but kept separate for
489 ease of maintenance. */
492 obj_mach_o_objc_section (int sect_index
)
496 #ifdef md_flush_pending_output
497 md_flush_pending_output ();
500 section
= obj_mach_o_segT_from_bfd_name (objc_sections
[sect_index
], 1);
503 obj_mach_o_seen_objc_section
= 1; /* We need to ensure that certain
504 sections are present and in the
506 subseg_set (section
, 0);
509 /* else, we leave the section as it was; there was a fatal error anyway. */
512 /* Debug section directives. */
514 static const char * const debug_sections
[] =
518 /* 1 */ ".debug_frame",
519 /* 2 */ ".debug_info",
520 /* 3 */ ".debug_abbrev",
521 /* 4 */ ".debug_aranges",
522 /* 5 */ ".debug_macinfo",
523 /* 6 */ ".debug_line",
524 /* 7 */ ".debug_loc",
525 /* 8 */ ".debug_pubnames",
526 /* 9 */ ".debug_pubtypes",
527 /* 10 */ ".debug_str",
528 /* 11 */ ".debug_ranges",
529 /* 12 */ ".debug_macro"
532 /* ??? Maybe these should be conditional on gdwarf-*.
533 It`s also likely that we will need to be able to set them from the cfi
537 obj_mach_o_debug_section (int sect_index
)
541 #ifdef md_flush_pending_output
542 md_flush_pending_output ();
545 section
= obj_mach_o_segT_from_bfd_name (debug_sections
[sect_index
], 1);
547 subseg_set (section
, 0);
549 /* else, we leave the section as it was; there was a fatal error anyway. */
552 /* This could be moved to the tc-xx files, but there is so little dependency
553 there, that the code might as well be shared. */
562 /* The extensions here are for specific sections that are generated by GCC
563 and Darwin system tools, but don't have directives in the `system as'. */
565 static const struct opt_tgt_sect tgt_sections
[] =
567 /* 0 */ { NULL
, 0, 0},
568 /* 1 */ { ".lazy_symbol_pointer", 0, 0},
569 /* 2 */ { ".lazy_symbol_pointer2", 0, 0}, /* X86 - extension */
570 /* 3 */ { ".lazy_symbol_pointer3", 0, 0}, /* X86 - extension */
571 /* 4 */ { ".non_lazy_symbol_pointer", 0, 0},
572 /* 5 */ { ".non_lazy_symbol_pointer_x86", 0, 0}, /* X86 - extension */
573 /* 6 */ { ".symbol_stub", 16, 20},
574 /* 7 */ { ".symbol_stub1", 0, 16}, /* PPC - extension */
575 /* 8 */ { ".picsymbol_stub", 26, 36},
576 /* 9 */ { ".picsymbol_stub1", 0, 32}, /* PPC - extension */
577 /* 10 */ { ".picsymbol_stub2", 25, 0}, /* X86 - extension */
578 /* 11 */ { ".picsymbol_stub3", 5, 0}, /* X86 - extension */
581 /* Interface for an optional section directive. */
584 obj_mach_o_opt_tgt_section (int sect_index
)
586 const struct opt_tgt_sect
*tgtsct
= &tgt_sections
[sect_index
];
589 #ifdef md_flush_pending_output
590 md_flush_pending_output ();
593 section
= obj_mach_o_segT_from_bfd_name (tgtsct
->name
, 0);
596 as_bad (_("%s is not used for the selected target"), tgtsct
->name
);
597 /* Leave the section as it is. */
601 bfd_mach_o_section
*mo_sec
= bfd_mach_o_get_mach_o_section (section
);
602 subseg_set (section
, 0);
603 #if defined (TC_I386)
604 mo_sec
->reserved2
= tgtsct
->x86_val
;
605 #elif defined (TC_PPC)
606 mo_sec
->reserved2
= tgtsct
->ppc_val
;
608 mo_sec
->reserved2
= 0;
613 /* We don't necessarily have the three 'base' sections on mach-o.
614 Normally, we would start up with only the 'text' section defined.
615 However, even that can be suppressed with (TODO) c/l option "-n".
616 Thus, we have to be able to create all three sections on-demand. */
619 obj_mach_o_base_section (int sect_index
)
623 #ifdef md_flush_pending_output
624 md_flush_pending_output ();
627 /* We don't support numeric (or any other) qualifications on the
628 well-known section shorthands. */
629 demand_empty_rest_of_line ();
633 /* Handle the three sections that are globally known within GAS.
634 For Mach-O, these are created on demand rather than at startup. */
636 if (text_section
== NULL
)
637 text_section
= obj_mach_o_segT_from_bfd_name (TEXT_SECTION_NAME
, 1);
638 if (obj_mach_o_is_static
)
640 bfd_mach_o_section
*mo_sec
641 = bfd_mach_o_get_mach_o_section (text_section
);
642 mo_sec
->flags
&= ~BFD_MACH_O_S_ATTR_PURE_INSTRUCTIONS
;
644 section
= text_section
;
647 if (data_section
== NULL
)
648 data_section
= obj_mach_o_segT_from_bfd_name (DATA_SECTION_NAME
, 1);
649 section
= data_section
;
652 /* ??? maybe this achieves very little, as an addition. */
653 if (bss_section
== NULL
)
655 bss_section
= obj_mach_o_segT_from_bfd_name (BSS_SECTION_NAME
, 1);
656 seg_info (bss_section
)->bss
= 1;
658 section
= bss_section
;
661 as_fatal (_("internal error: base section index out of range"));
665 subseg_set (section
, 0);
668 /* This finishes off parsing a .comm or .lcomm statement, which both can have
669 an (optional) alignment field. It also allows us to create the bss section
673 obj_mach_o_common_parse (int is_local
, symbolS
*symbolP
,
678 /* Both comm and lcomm take an optional alignment, as a power
679 of two between 1 and 15. */
680 if (*input_line_pointer
== ',')
682 /* We expect a power of 2. */
683 align
= parse_align (0);
684 if (align
== (addressT
) -1)
688 as_warn (_("Alignment (%lu) too large: 15 assumed."),
689 (unsigned long)align
);
696 /* Create the BSS section on demand. */
697 if (bss_section
== NULL
)
699 bss_section
= obj_mach_o_segT_from_bfd_name (BSS_SECTION_NAME
, 1);
700 seg_info (bss_section
)->bss
= 1;
702 bss_alloc (symbolP
, size
, align
);
703 S_CLEAR_EXTERNAL (symbolP
);
707 S_SET_VALUE (symbolP
, size
);
708 S_SET_ALIGN (symbolP
, align
);
709 S_SET_EXTERNAL (symbolP
);
710 S_SET_SEGMENT (symbolP
, bfd_com_section_ptr
);
713 symbol_get_bfdsym (symbolP
)->flags
|= BSF_OBJECT
;
719 obj_mach_o_comm (int is_local
)
721 s_comm_internal (is_local
, obj_mach_o_common_parse
);
724 /* Set properties that apply to the whole file. At present, the only
725 one defined, is subsections_via_symbols. */
727 typedef enum obj_mach_o_file_properties
{
728 OBJ_MACH_O_FILE_PROP_NONE
= 0,
729 OBJ_MACH_O_FILE_PROP_SUBSECTS_VIA_SYMS
,
730 OBJ_MACH_O_FILE_PROP_MAX
731 } obj_mach_o_file_properties
;
734 obj_mach_o_fileprop (int prop
)
736 if (prop
< 0 || prop
>= OBJ_MACH_O_FILE_PROP_MAX
)
737 as_fatal (_("internal error: bad file property ID %d"), prop
);
739 switch ((obj_mach_o_file_properties
) prop
)
741 case OBJ_MACH_O_FILE_PROP_SUBSECTS_VIA_SYMS
:
742 obj_mach_o_subsections_by_symbols
= 1;
743 if (!bfd_set_private_flags (stdoutput
,
744 BFD_MACH_O_MH_SUBSECTIONS_VIA_SYMBOLS
))
745 as_bad (_("failed to set subsections by symbols"));
746 demand_empty_rest_of_line ();
753 /* Dummy function to allow test-code to work while we are working
757 obj_mach_o_placeholder (int arg ATTRIBUTE_UNUSED
)
759 ignore_rest_of_line ();
762 const pseudo_typeS mach_o_pseudo_table
[] =
764 /* Section directives. */
765 { "comm", obj_mach_o_comm
, 0 },
766 { "lcomm", obj_mach_o_comm
, 1 },
768 { "text", obj_mach_o_base_section
, 1},
769 { "data", obj_mach_o_base_section
, 2},
770 { "bss", obj_mach_o_base_section
, 3}, /* extension */
772 { "const", obj_mach_o_known_section
, 1},
773 { "static_const", obj_mach_o_known_section
, 2},
774 { "cstring", obj_mach_o_known_section
, 3},
775 { "literal4", obj_mach_o_known_section
, 4},
776 { "literal8", obj_mach_o_known_section
, 5},
777 { "literal16", obj_mach_o_known_section
, 6},
778 { "constructor", obj_mach_o_known_section
, 7},
779 { "destructor", obj_mach_o_known_section
, 8},
780 { "eh_frame", obj_mach_o_known_section
, 9},
782 { "const_data", obj_mach_o_known_section
, 10},
783 { "static_data", obj_mach_o_known_section
, 11},
784 { "mod_init_func", obj_mach_o_known_section
, 12},
785 { "mod_term_func", obj_mach_o_known_section
, 13},
786 { "dyld", obj_mach_o_known_section
, 14},
787 { "cfstring", obj_mach_o_known_section
, 15},
789 { "objc_class", obj_mach_o_objc_section
, 1},
790 { "objc_meta_class", obj_mach_o_objc_section
, 2},
791 { "objc_cat_cls_meth", obj_mach_o_objc_section
, 3},
792 { "objc_cat_inst_meth", obj_mach_o_objc_section
, 4},
793 { "objc_protocol", obj_mach_o_objc_section
, 5},
794 { "objc_string_object", obj_mach_o_objc_section
, 6},
795 { "objc_cls_meth", obj_mach_o_objc_section
, 7},
796 { "objc_inst_meth", obj_mach_o_objc_section
, 8},
797 { "objc_cls_refs", obj_mach_o_objc_section
, 9},
798 { "objc_message_refs", obj_mach_o_objc_section
, 10},
799 { "objc_symbols", obj_mach_o_objc_section
, 11},
800 { "objc_category", obj_mach_o_objc_section
, 12},
801 { "objc_class_vars", obj_mach_o_objc_section
, 13},
802 { "objc_instance_vars", obj_mach_o_objc_section
, 14},
803 { "objc_module_info", obj_mach_o_objc_section
, 15},
804 { "objc_class_names", obj_mach_o_objc_section
, 16}, /* Alias for .cstring */
805 { "objc_meth_var_types", obj_mach_o_objc_section
, 17}, /* Alias for .cstring */
806 { "objc_meth_var_names", obj_mach_o_objc_section
, 18}, /* Alias for .cstring */
807 { "objc_selector_strs", obj_mach_o_objc_section
, 19},
808 { "objc_image_info", obj_mach_o_objc_section
, 20}, /* extension. */
809 { "objc_selector_fixup", obj_mach_o_objc_section
, 21}, /* extension. */
810 { "objc1_class_ext", obj_mach_o_objc_section
, 22}, /* ObjC-1 extension. */
811 { "objc1_property_list", obj_mach_o_objc_section
, 23}, /* ObjC-1 extension. */
812 { "objc1_protocol_ext", obj_mach_o_objc_section
, 24}, /* ObjC-1 extension. */
814 { "debug_frame", obj_mach_o_debug_section
, 1}, /* extension. */
815 { "debug_info", obj_mach_o_debug_section
, 2}, /* extension. */
816 { "debug_abbrev", obj_mach_o_debug_section
, 3}, /* extension. */
817 { "debug_aranges", obj_mach_o_debug_section
, 4}, /* extension. */
818 { "debug_macinfo", obj_mach_o_debug_section
, 5}, /* extension. */
819 { "debug_line", obj_mach_o_debug_section
, 6}, /* extension. */
820 { "debug_loc", obj_mach_o_debug_section
, 7}, /* extension. */
821 { "debug_pubnames", obj_mach_o_debug_section
, 8}, /* extension. */
822 { "debug_pubtypes", obj_mach_o_debug_section
, 9}, /* extension. */
823 { "debug_str", obj_mach_o_debug_section
, 10}, /* extension. */
824 { "debug_ranges", obj_mach_o_debug_section
, 11}, /* extension. */
825 { "debug_macro", obj_mach_o_debug_section
, 12}, /* extension. */
827 { "lazy_symbol_pointer", obj_mach_o_opt_tgt_section
, 1},
828 { "lazy_symbol_pointer2", obj_mach_o_opt_tgt_section
, 2}, /* extension. */
829 { "lazy_symbol_pointer3", obj_mach_o_opt_tgt_section
, 3}, /* extension. */
830 { "non_lazy_symbol_pointer", obj_mach_o_opt_tgt_section
, 4},
831 { "non_lazy_symbol_pointer_x86", obj_mach_o_opt_tgt_section
, 5}, /* extension. */
832 { "symbol_stub", obj_mach_o_opt_tgt_section
, 6},
833 { "symbol_stub1", obj_mach_o_opt_tgt_section
, 7}, /* extension. */
834 { "picsymbol_stub", obj_mach_o_opt_tgt_section
, 8}, /* extension. */
835 { "picsymbol_stub1", obj_mach_o_opt_tgt_section
, 9}, /* extension. */
836 { "picsymbol_stub2", obj_mach_o_opt_tgt_section
, 4}, /* extension. */
837 { "picsymbol_stub3", obj_mach_o_opt_tgt_section
, 4}, /* extension. */
839 { "section", obj_mach_o_section
, 0},
841 /* Symbol-related. */
842 { "indirect_symbol", obj_mach_o_placeholder
, 0},
843 { "weak_definition", obj_mach_o_placeholder
, 0},
844 { "private_extern", obj_mach_o_placeholder
, 0},
845 { "weak", obj_mach_o_weak
, 0}, /* extension */
848 { "subsections_via_symbols", obj_mach_o_fileprop
,
849 OBJ_MACH_O_FILE_PROP_SUBSECTS_VIA_SYMS
},