1 /* ELF object file format
2 Copyright (C) 1992-2016 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 #define OBJ_HEADER "obj-elf.h"
23 #include "safe-ctype.h"
26 #include "struc-symbol.h"
27 #include "dwarf2dbg.h"
29 #ifndef ECOFF_DEBUGGING
30 #define ECOFF_DEBUGGING 0
32 #define NEED_ECOFF_DEBUG
35 #ifdef NEED_ECOFF_DEBUG
40 #include "elf/alpha.h"
56 #include "elf/x86-64.h"
64 #include "elf/nios2.h"
67 static void obj_elf_line (int);
68 static void obj_elf_size (int);
69 static void obj_elf_type (int);
70 static void obj_elf_ident (int);
71 static void obj_elf_weak (int);
72 static void obj_elf_local (int);
73 static void obj_elf_visibility (int);
74 static void obj_elf_symver (int);
75 static void obj_elf_subsection (int);
76 static void obj_elf_popsection (int);
77 static void obj_elf_gnu_attribute (int);
78 static void obj_elf_tls_common (int);
79 static void obj_elf_lcomm (int);
80 static void obj_elf_struct (int);
82 static const pseudo_typeS elf_pseudo_table
[] =
84 {"comm", obj_elf_common
, 0},
85 {"common", obj_elf_common
, 1},
86 {"ident", obj_elf_ident
, 0},
87 {"lcomm", obj_elf_lcomm
, 0},
88 {"local", obj_elf_local
, 0},
89 {"previous", obj_elf_previous
, 0},
90 {"section", obj_elf_section
, 0},
91 {"section.s", obj_elf_section
, 0},
92 {"sect", obj_elf_section
, 0},
93 {"sect.s", obj_elf_section
, 0},
94 {"pushsection", obj_elf_section
, 1},
95 {"popsection", obj_elf_popsection
, 0},
96 {"size", obj_elf_size
, 0},
97 {"type", obj_elf_type
, 0},
98 {"version", obj_elf_version
, 0},
99 {"weak", obj_elf_weak
, 0},
101 /* These define symbol visibility. */
102 {"internal", obj_elf_visibility
, STV_INTERNAL
},
103 {"hidden", obj_elf_visibility
, STV_HIDDEN
},
104 {"protected", obj_elf_visibility
, STV_PROTECTED
},
106 /* These are used for stabs-in-elf configurations. */
107 {"line", obj_elf_line
, 0},
109 /* This is a GNU extension to handle symbol versions. */
110 {"symver", obj_elf_symver
, 0},
112 /* A GNU extension to change subsection only. */
113 {"subsection", obj_elf_subsection
, 0},
115 /* These are GNU extensions to aid in garbage collecting C++ vtables. */
116 {"vtable_inherit", (void (*) (int)) &obj_elf_vtable_inherit
, 0},
117 {"vtable_entry", (void (*) (int)) &obj_elf_vtable_entry
, 0},
119 /* A GNU extension for object attributes. */
120 {"gnu_attribute", obj_elf_gnu_attribute
, 0},
122 /* These are used for dwarf. */
126 /* These are used for dwarf2. */
127 { "file", (void (*) (int)) dwarf2_directive_file
, 0 },
128 { "loc", dwarf2_directive_loc
, 0 },
129 { "loc_mark_labels", dwarf2_directive_loc_mark_labels
, 0 },
131 /* We need to trap the section changing calls to handle .previous. */
132 {"data", obj_elf_data
, 0},
133 {"offset", obj_elf_struct
, 0},
134 {"struct", obj_elf_struct
, 0},
135 {"text", obj_elf_text
, 0},
137 {"tls_common", obj_elf_tls_common
, 0},
143 static const pseudo_typeS ecoff_debug_pseudo_table
[] =
145 #ifdef NEED_ECOFF_DEBUG
146 /* COFF style debugging information for ECOFF. .ln is not used; .loc
148 { "def", ecoff_directive_def
, 0 },
149 { "dim", ecoff_directive_dim
, 0 },
150 { "endef", ecoff_directive_endef
, 0 },
151 { "file", ecoff_directive_file
, 0 },
152 { "scl", ecoff_directive_scl
, 0 },
153 { "tag", ecoff_directive_tag
, 0 },
154 { "val", ecoff_directive_val
, 0 },
156 /* COFF debugging requires pseudo-ops .size and .type, but ELF
157 already has meanings for those. We use .esize and .etype
158 instead. These are only generated by gcc anyhow. */
159 { "esize", ecoff_directive_size
, 0 },
160 { "etype", ecoff_directive_type
, 0 },
162 /* ECOFF specific debugging information. */
163 { "begin", ecoff_directive_begin
, 0 },
164 { "bend", ecoff_directive_bend
, 0 },
165 { "end", ecoff_directive_end
, 0 },
166 { "ent", ecoff_directive_ent
, 0 },
167 { "fmask", ecoff_directive_fmask
, 0 },
168 { "frame", ecoff_directive_frame
, 0 },
169 { "loc", ecoff_directive_loc
, 0 },
170 { "mask", ecoff_directive_mask
, 0 },
172 /* Other ECOFF directives. */
173 { "extern", ecoff_directive_extern
, 0 },
175 /* These are used on Irix. I don't know how to implement them. */
176 { "alias", s_ignore
, 0 },
177 { "bgnb", s_ignore
, 0 },
178 { "endb", s_ignore
, 0 },
179 { "lab", s_ignore
, 0 },
180 { "noalias", s_ignore
, 0 },
181 { "verstamp", s_ignore
, 0 },
182 { "vreg", s_ignore
, 0 },
185 {NULL
, NULL
, 0} /* end sentinel */
189 #include "aout/aout64.h"
191 /* This is called when the assembler starts. */
193 asection
*elf_com_section_ptr
;
200 /* Add symbols for the known sections to the symbol table. */
201 s
= bfd_get_section_by_name (stdoutput
, TEXT_SECTION_NAME
);
202 symbol_table_insert (section_symbol (s
));
203 s
= bfd_get_section_by_name (stdoutput
, DATA_SECTION_NAME
);
204 symbol_table_insert (section_symbol (s
));
205 s
= bfd_get_section_by_name (stdoutput
, BSS_SECTION_NAME
);
206 symbol_table_insert (section_symbol (s
));
207 elf_com_section_ptr
= bfd_com_section_ptr
;
211 elf_pop_insert (void)
213 pop_insert (elf_pseudo_table
);
215 pop_insert (ecoff_debug_pseudo_table
);
219 elf_s_get_size (symbolS
*sym
)
221 return S_GET_SIZE (sym
);
225 elf_s_set_size (symbolS
*sym
, bfd_vma sz
)
227 S_SET_SIZE (sym
, sz
);
231 elf_s_get_align (symbolS
*sym
)
233 return S_GET_ALIGN (sym
);
237 elf_s_set_align (symbolS
*sym
, bfd_vma align
)
239 S_SET_ALIGN (sym
, align
);
243 elf_s_get_other (symbolS
*sym
)
245 return elf_symbol (symbol_get_bfdsym (sym
))->internal_elf_sym
.st_other
;
249 elf_s_set_other (symbolS
*sym
, int other
)
251 S_SET_OTHER (sym
, other
);
255 elf_sec_sym_ok_for_reloc (asection
*sec
)
257 return obj_sec_sym_ok_for_reloc (sec
);
261 elf_file_symbol (const char *s
, int appfile
)
264 || symbol_rootP
== NULL
265 || symbol_rootP
->bsym
== NULL
266 || (symbol_rootP
->bsym
->flags
& BSF_FILE
) == 0)
271 sym
= symbol_new (s
, absolute_section
, 0, NULL
);
272 symbol_set_frag (sym
, &zero_address_frag
);
274 name_length
= strlen (s
);
275 if (name_length
> strlen (S_GET_NAME (sym
)))
277 obstack_grow (¬es
, s
, name_length
+ 1);
278 S_SET_NAME (sym
, (const char *) obstack_finish (¬es
));
281 strcpy ((char *) S_GET_NAME (sym
), s
);
283 symbol_get_bfdsym (sym
)->flags
|= BSF_FILE
;
285 if (symbol_rootP
!= sym
286 && (symbol_rootP
->bsym
== NULL
287 || !(symbol_rootP
->bsym
->flags
& BSF_FILE
)))
289 symbol_remove (sym
, &symbol_rootP
, &symbol_lastP
);
290 symbol_insert (sym
, symbol_rootP
, &symbol_rootP
, &symbol_lastP
);
294 verify_symbol_chain (symbol_rootP
, symbol_lastP
);
298 #ifdef NEED_ECOFF_DEBUG
299 ecoff_new_file (s
, appfile
);
303 /* Called from read.c:s_comm after we've parsed .comm symbol, size.
304 Parse a possible alignment value. */
307 elf_common_parse (int ignore ATTRIBUTE_UNUSED
, symbolS
*symbolP
, addressT size
)
310 int is_local
= symbol_get_obj (symbolP
)->local
;
312 if (*input_line_pointer
== ',')
314 char *save
= input_line_pointer
;
316 input_line_pointer
++;
319 if (*input_line_pointer
== '"')
321 /* For sparc. Accept .common symbol, length, "bss" */
322 input_line_pointer
++;
323 /* Some use the dot, some don't. */
324 if (*input_line_pointer
== '.')
325 input_line_pointer
++;
326 /* Some say data, some say bss. */
327 if (strncmp (input_line_pointer
, "bss\"", 4) == 0)
328 input_line_pointer
+= 4;
329 else if (strncmp (input_line_pointer
, "data\"", 5) == 0)
330 input_line_pointer
+= 5;
333 char *p
= input_line_pointer
;
338 while (!is_end_of_line
[(unsigned char) *input_line_pointer
])
339 if (*input_line_pointer
++ == '"')
341 c
= *input_line_pointer
;
342 *input_line_pointer
= '\0';
343 as_bad (_("bad .common segment %s"), p
);
344 *input_line_pointer
= c
;
345 ignore_rest_of_line ();
348 /* ??? Don't ask me why these are always global. */
353 input_line_pointer
= save
;
354 align
= parse_align (is_local
);
355 if (align
== (addressT
) -1)
362 bss_alloc (symbolP
, size
, align
);
363 S_CLEAR_EXTERNAL (symbolP
);
367 S_SET_VALUE (symbolP
, size
);
368 S_SET_ALIGN (symbolP
, align
);
369 S_SET_EXTERNAL (symbolP
);
370 S_SET_SEGMENT (symbolP
, elf_com_section_ptr
);
373 symbol_get_bfdsym (symbolP
)->flags
|= BSF_OBJECT
;
379 obj_elf_common (int is_common
)
381 if (flag_mri
&& is_common
)
384 s_comm_internal (0, elf_common_parse
);
388 obj_elf_tls_common (int ignore ATTRIBUTE_UNUSED
)
390 symbolS
*symbolP
= s_comm_internal (0, elf_common_parse
);
393 symbol_get_bfdsym (symbolP
)->flags
|= BSF_THREAD_LOCAL
;
397 obj_elf_lcomm (int ignore ATTRIBUTE_UNUSED
)
399 symbolS
*symbolP
= s_comm_internal (0, s_lcomm_internal
);
402 symbol_get_bfdsym (symbolP
)->flags
|= BSF_OBJECT
;
406 get_sym_from_input_line_and_check (void)
412 c
= get_symbol_name (& name
);
413 sym
= symbol_find_or_make (name
);
414 *input_line_pointer
= c
;
415 SKIP_WHITESPACE_AFTER_NAME ();
417 /* There is no symbol name if input_line_pointer has not moved. */
418 if (name
== input_line_pointer
)
419 as_bad (_("Missing symbol name in directive"));
424 obj_elf_local (int ignore ATTRIBUTE_UNUSED
)
431 symbolP
= get_sym_from_input_line_and_check ();
432 c
= *input_line_pointer
;
433 S_CLEAR_EXTERNAL (symbolP
);
434 symbol_get_obj (symbolP
)->local
= 1;
437 input_line_pointer
++;
439 if (*input_line_pointer
== '\n')
444 demand_empty_rest_of_line ();
448 obj_elf_weak (int ignore ATTRIBUTE_UNUSED
)
455 symbolP
= get_sym_from_input_line_and_check ();
456 c
= *input_line_pointer
;
457 S_SET_WEAK (symbolP
);
460 input_line_pointer
++;
462 if (*input_line_pointer
== '\n')
467 demand_empty_rest_of_line ();
471 obj_elf_visibility (int visibility
)
476 elf_symbol_type
*elfsym
;
480 symbolP
= get_sym_from_input_line_and_check ();
482 bfdsym
= symbol_get_bfdsym (symbolP
);
483 elfsym
= elf_symbol_from (bfd_asymbol_bfd (bfdsym
), bfdsym
);
487 elfsym
->internal_elf_sym
.st_other
&= ~3;
488 elfsym
->internal_elf_sym
.st_other
|= visibility
;
490 c
= *input_line_pointer
;
493 input_line_pointer
++;
497 if (*input_line_pointer
== '\n')
503 demand_empty_rest_of_line ();
506 static segT previous_section
;
507 static int previous_subsection
;
511 struct section_stack
*next
;
513 int subseg
, prev_subseg
;
516 static struct section_stack
*section_stack
;
519 get_section (bfd
*abfd ATTRIBUTE_UNUSED
, asection
*sec
, void *inf
)
521 const char *gname
= (const char *) inf
;
522 const char *group_name
= elf_group_name (sec
);
524 return (group_name
== gname
525 || (group_name
!= NULL
527 && strcmp (group_name
, gname
) == 0));
530 /* Handle the .section pseudo-op. This code supports two different
533 The first is found on Solaris, and looks like
534 .section ".sec1",#alloc,#execinstr,#write
535 Here the names after '#' are the SHF_* flags to turn on for the
536 section. I'm not sure how it determines the SHT_* type (BFD
537 doesn't really give us control over the type, anyhow).
539 The second format is found on UnixWare, and probably most SVR4
540 machines, and looks like
541 .section .sec1,"a",@progbits
542 The quoted string may contain any combination of a, w, x, and
543 represents the SHF_* flags to turn on for the section. The string
544 beginning with '@' can be progbits or nobits. There should be
545 other possibilities, but I don't know what they are. In any case,
546 BFD doesn't really let us set the section type. */
549 obj_elf_change_section (const char *name
,
553 const char *group_name
,
560 const struct elf_backend_data
*bed
;
561 const struct bfd_elf_special_section
*ssect
;
563 #ifdef md_flush_pending_output
564 md_flush_pending_output ();
567 /* Switch to the section, creating it if necessary. */
570 struct section_stack
*elt
;
571 elt
= XNEW (struct section_stack
);
572 elt
->next
= section_stack
;
574 elt
->prev_seg
= previous_section
;
575 elt
->subseg
= now_subseg
;
576 elt
->prev_subseg
= previous_subsection
;
579 previous_section
= now_seg
;
580 previous_subsection
= now_subseg
;
582 old_sec
= bfd_get_section_by_name_if (stdoutput
, name
, get_section
,
583 (void *) group_name
);
590 sec
= subseg_force_new (name
, 0);
592 bed
= get_elf_backend_data (stdoutput
);
593 ssect
= (*bed
->get_sec_type_attr
) (stdoutput
, sec
);
597 bfd_boolean override
= FALSE
;
599 if (type
== SHT_NULL
)
601 else if (type
!= ssect
->type
)
604 /* Some older versions of gcc will emit
606 .section .init_array,"aw",@progbits
608 for __attribute__ ((section (".init_array"))).
609 "@progbits" is incorrect. Also for x86-64 large bss
610 sections, some older versions of gcc will emit
612 .section .lbss,"aw",@progbits
614 "@progbits" is incorrect. */
616 && (bed
->s
->arch_size
!= 64
617 || !(ssect
->attr
& SHF_X86_64_LARGE
))
619 && ssect
->type
!= SHT_INIT_ARRAY
620 && ssect
->type
!= SHT_FINI_ARRAY
621 && ssect
->type
!= SHT_PREINIT_ARRAY
)
623 /* We allow to specify any type for a .note section. */
624 if (ssect
->type
!= SHT_NOTE
625 /* Processor and application defined types are allowed too. */
626 && type
< SHT_LOPROC
)
627 as_warn (_("setting incorrect section type for %s"),
632 as_warn (_("ignoring incorrect section type for %s"),
638 if (old_sec
== NULL
&& ((attr
& ~(SHF_MASKOS
| SHF_MASKPROC
))
639 & ~ssect
->attr
) != 0)
641 /* As a GNU extension, we permit a .note section to be
642 allocatable. If the linker sees an allocatable .note
643 section, it will create a PT_NOTE segment in the output
644 file. We also allow "x" for .note.GNU-stack. */
645 if (ssect
->type
== SHT_NOTE
646 && (attr
== SHF_ALLOC
|| attr
== SHF_EXECINSTR
))
648 /* Allow different SHF_MERGE and SHF_STRINGS if we have
649 something like .rodata.str. */
650 else if (ssect
->suffix_length
== -2
651 && name
[ssect
->prefix_length
] == '.'
655 & ~SHF_STRINGS
) == 0)
657 /* .interp, .strtab and .symtab can have SHF_ALLOC. */
658 else if (attr
== SHF_ALLOC
659 && (strcmp (name
, ".interp") == 0
660 || strcmp (name
, ".strtab") == 0
661 || strcmp (name
, ".symtab") == 0))
663 /* .note.GNU-stack can have SHF_EXECINSTR. */
664 else if (attr
== SHF_EXECINSTR
665 && strcmp (name
, ".note.GNU-stack") == 0)
668 /* A section on Alpha may have SHF_ALPHA_GPREL. */
669 else if ((attr
& ~ssect
->attr
) == SHF_ALPHA_GPREL
)
673 else if (attr
== (SHF_EXECINSTR
| SHF_WRITE
| SHF_ALLOC
)
674 && (ssect
->type
== SHT_INIT_ARRAY
675 || ssect
->type
== SHT_FINI_ARRAY
676 || ssect
->type
== SHT_PREINIT_ARRAY
))
677 /* RX init/fini arrays can and should have the "awx" attributes set. */
682 if (group_name
== NULL
)
683 as_warn (_("setting incorrect section attributes for %s"),
689 if (!override
&& old_sec
== NULL
)
693 /* Convert ELF type and flags to BFD flags. */
695 | ((attr
& SHF_WRITE
) ? 0 : SEC_READONLY
)
696 | ((attr
& SHF_ALLOC
) ? SEC_ALLOC
: 0)
697 | (((attr
& SHF_ALLOC
) && type
!= SHT_NOBITS
) ? SEC_LOAD
: 0)
698 | ((attr
& SHF_EXECINSTR
) ? SEC_CODE
: 0)
699 | ((attr
& SHF_MERGE
) ? SEC_MERGE
: 0)
700 | ((attr
& SHF_STRINGS
) ? SEC_STRINGS
: 0)
701 | ((attr
& SHF_EXCLUDE
) ? SEC_EXCLUDE
: 0)
702 | ((attr
& SHF_TLS
) ? SEC_THREAD_LOCAL
: 0));
703 #ifdef md_elf_section_flags
704 flags
= md_elf_section_flags (flags
, attr
, type
);
708 flags
|= SEC_LINK_ONCE
| SEC_LINK_DUPLICATES_DISCARD
;
714 if (type
== SHT_NULL
)
715 type
= bfd_elf_get_default_section_type (flags
);
716 elf_section_type (sec
) = type
;
717 elf_section_flags (sec
) = attr
;
719 /* Prevent SEC_HAS_CONTENTS from being inadvertently set. */
720 if (type
== SHT_NOBITS
)
721 seg_info (sec
)->bss
= 1;
723 bfd_set_section_flags (stdoutput
, sec
, flags
);
724 if (flags
& SEC_MERGE
)
725 sec
->entsize
= entsize
;
726 elf_group_name (sec
) = group_name
;
728 /* Add a symbol for this section to the symbol table. */
729 secsym
= symbol_find (name
);
731 symbol_set_bfdsym (secsym
, sec
->symbol
);
733 symbol_table_insert (section_symbol (sec
));
738 && (unsigned) type
!= elf_section_type (old_sec
))
739 as_warn (_("ignoring changed section type for %s"), name
);
743 /* If section attributes are specified the second time we see a
744 particular section, then check that they are the same as we
745 saw the first time. */
746 if (((old_sec
->flags
^ flags
)
747 & (SEC_ALLOC
| SEC_LOAD
| SEC_READONLY
| SEC_CODE
748 | SEC_EXCLUDE
| SEC_SORT_ENTRIES
| SEC_MERGE
| SEC_STRINGS
749 | SEC_LINK_ONCE
| SEC_LINK_DUPLICATES_DISCARD
750 | SEC_THREAD_LOCAL
)))
751 as_warn (_("ignoring changed section attributes for %s"), name
);
753 /* FIXME: Maybe we should consider removing a previously set
754 processor or application specific attribute as suspicious ? */
755 elf_section_flags (sec
) = attr
;
757 if ((flags
& SEC_MERGE
) && old_sec
->entsize
!= (unsigned) entsize
)
758 as_warn (_("ignoring changed section entity size for %s"), name
);
762 #ifdef md_elf_section_change_hook
763 md_elf_section_change_hook ();
768 obj_elf_parse_section_letters (char *str
, size_t len
, bfd_boolean
*is_clone
)
787 attr
|= SHF_EXECINSTR
;
806 if (*(str
- 1) == 'a')
809 if (len
> 1 && str
[1] == 's')
818 const char *bad_msg
= _("unrecognized .section attribute:"
819 " want a,e,w,x,M,S,G,T or number");
820 #ifdef md_elf_section_letter
821 bfd_vma md_attr
= md_elf_section_letter (*str
, &bad_msg
);
822 if (md_attr
!= (bfd_vma
) -1)
830 attr
|= strtoul (str
, & end
, 0);
831 /* Update str and len, allowing for the fact that
832 we will execute str++ and len-- below. */
838 as_fatal ("%s", bad_msg
);
849 obj_elf_section_type (char *str
, size_t len
, bfd_boolean warn
)
851 if (len
== 8 && strncmp (str
, "progbits", 8) == 0)
853 if (len
== 6 && strncmp (str
, "nobits", 6) == 0)
855 if (len
== 4 && strncmp (str
, "note", 4) == 0)
857 if (len
== 10 && strncmp (str
, "init_array", 10) == 0)
858 return SHT_INIT_ARRAY
;
859 if (len
== 10 && strncmp (str
, "fini_array", 10) == 0)
860 return SHT_FINI_ARRAY
;
861 if (len
== 13 && strncmp (str
, "preinit_array", 13) == 0)
862 return SHT_PREINIT_ARRAY
;
864 #ifdef md_elf_section_type
866 int md_type
= md_elf_section_type (str
, len
);
875 int type
= strtoul (str
, & end
, 0);
877 if (warn
&& (size_t) (end
- str
) != len
)
878 as_warn (_("extraneous characters at end of numeric section type"));
884 as_warn (_("unrecognized section type"));
889 obj_elf_section_word (char *str
, size_t len
, int *type
)
893 if (len
== 5 && strncmp (str
, "write", 5) == 0)
895 if (len
== 5 && strncmp (str
, "alloc", 5) == 0)
897 if (len
== 9 && strncmp (str
, "execinstr", 9) == 0)
898 return SHF_EXECINSTR
;
899 if (len
== 7 && strncmp (str
, "exclude", 7) == 0)
901 if (len
== 3 && strncmp (str
, "tls", 3) == 0)
904 #ifdef md_elf_section_word
906 bfd_vma md_attr
= md_elf_section_word (str
, len
);
912 ret
= obj_elf_section_type (str
, len
, FALSE
);
916 as_warn (_("unrecognized section attribute"));
921 /* Get name of section. */
923 obj_elf_section_name (void)
928 if (*input_line_pointer
== '"')
932 name
= demand_copy_C_string (&dummy
);
935 ignore_rest_of_line ();
941 char *end
= input_line_pointer
;
943 while (0 == strchr ("\n\t,; ", *end
))
945 if (end
== input_line_pointer
)
947 as_bad (_("missing name"));
948 ignore_rest_of_line ();
952 name
= (char *) xmalloc (end
- input_line_pointer
+ 1);
953 memcpy (name
, input_line_pointer
, end
- input_line_pointer
);
954 name
[end
- input_line_pointer
] = '\0';
956 while (flag_sectname_subst
)
958 char *subst
= strchr (name
, '%');
959 if (subst
&& subst
[1] == 'S')
961 int oldlen
= strlen (name
);
962 int substlen
= strlen (now_seg
->name
);
963 int newlen
= oldlen
- 2 + substlen
;
964 char *newname
= (char *) xmalloc (newlen
+ 1);
965 int headlen
= subst
- name
;
966 memcpy (newname
, name
, headlen
);
967 strcpy (newname
+ headlen
, now_seg
->name
);
968 strcat (newname
+ headlen
, subst
+ 2);
976 #ifdef tc_canonicalize_section_name
977 name
= tc_canonicalize_section_name (name
);
979 input_line_pointer
= end
;
986 obj_elf_section (int push
)
988 const char *name
, *group_name
;
994 subsegT new_subsection
= -1;
1001 #ifdef md_flush_pending_output
1002 md_flush_pending_output ();
1005 previous_section
= now_seg
;
1006 previous_subsection
= now_subseg
;
1008 s_mri_sect (&mri_type
);
1010 #ifdef md_elf_section_change_hook
1011 md_elf_section_change_hook ();
1016 #endif /* ! defined (TC_I370) */
1018 name
= obj_elf_section_name ();
1027 if (*input_line_pointer
== ',')
1029 /* Skip the comma. */
1030 ++input_line_pointer
;
1033 if (push
&& ISDIGIT (*input_line_pointer
))
1035 /* .pushsection has an optional subsection. */
1036 new_subsection
= (subsegT
) get_absolute_expression ();
1040 /* Stop if we don't see a comma. */
1041 if (*input_line_pointer
!= ',')
1044 /* Skip the comma. */
1045 ++input_line_pointer
;
1049 if (*input_line_pointer
== '"')
1051 bfd_boolean is_clone
;
1053 beg
= demand_copy_C_string (&dummy
);
1056 ignore_rest_of_line ();
1059 attr
|= obj_elf_parse_section_letters (beg
, strlen (beg
), &is_clone
);
1062 if (*input_line_pointer
== ',')
1065 char *save
= input_line_pointer
;
1067 ++input_line_pointer
;
1069 c
= *input_line_pointer
;
1072 beg
= demand_copy_C_string (&dummy
);
1075 ignore_rest_of_line ();
1078 type
= obj_elf_section_type (beg
, strlen (beg
), TRUE
);
1080 else if (c
== '@' || c
== '%')
1082 ++input_line_pointer
;
1084 if (ISDIGIT (* input_line_pointer
))
1086 type
= strtoul (input_line_pointer
, & input_line_pointer
, 0);
1090 c
= get_symbol_name (& beg
);
1091 (void) restore_line_pointer (c
);
1092 type
= obj_elf_section_type (beg
, input_line_pointer
- beg
, TRUE
);
1096 input_line_pointer
= save
;
1100 if ((attr
& SHF_MERGE
) != 0 && *input_line_pointer
== ',')
1102 ++input_line_pointer
;
1104 entsize
= get_absolute_expression ();
1108 as_warn (_("invalid merge entity size"));
1113 else if ((attr
& SHF_MERGE
) != 0)
1115 as_warn (_("entity size for SHF_MERGE not specified"));
1119 if ((attr
& SHF_GROUP
) != 0 && is_clone
)
1121 as_warn (_("? section flag ignored with G present"));
1124 if ((attr
& SHF_GROUP
) != 0 && *input_line_pointer
== ',')
1126 ++input_line_pointer
;
1127 group_name
= obj_elf_section_name ();
1128 if (group_name
== NULL
)
1130 else if (*input_line_pointer
== ',')
1132 ++input_line_pointer
;
1134 if (strncmp (input_line_pointer
, "comdat", 6) == 0)
1136 input_line_pointer
+= 6;
1140 else if (strncmp (name
, ".gnu.linkonce", 13) == 0)
1143 else if ((attr
& SHF_GROUP
) != 0)
1145 as_warn (_("group name for SHF_GROUP not specified"));
1151 const char *now_group
= elf_group_name (now_seg
);
1152 if (now_group
!= NULL
)
1154 group_name
= xstrdup (now_group
);
1155 linkonce
= (now_seg
->flags
& SEC_LINK_ONCE
) != 0;
1166 if (*input_line_pointer
!= '#')
1168 as_bad (_("character following name is not '#'"));
1169 ignore_rest_of_line ();
1172 ++input_line_pointer
;
1173 c
= get_symbol_name (& beg
);
1174 (void) restore_line_pointer (c
);
1176 attr
|= obj_elf_section_word (beg
, input_line_pointer
- beg
, & type
);
1180 while (*input_line_pointer
++ == ',');
1181 --input_line_pointer
;
1186 demand_empty_rest_of_line ();
1188 obj_elf_change_section (name
, type
, attr
, entsize
, group_name
, linkonce
, push
);
1190 if (push
&& new_subsection
!= -1)
1191 subseg_set (now_seg
, new_subsection
);
1194 /* Change to the .data section. */
1197 obj_elf_data (int i
)
1199 #ifdef md_flush_pending_output
1200 md_flush_pending_output ();
1203 previous_section
= now_seg
;
1204 previous_subsection
= now_subseg
;
1207 #ifdef md_elf_section_change_hook
1208 md_elf_section_change_hook ();
1212 /* Change to the .text section. */
1215 obj_elf_text (int i
)
1217 #ifdef md_flush_pending_output
1218 md_flush_pending_output ();
1221 previous_section
= now_seg
;
1222 previous_subsection
= now_subseg
;
1225 #ifdef md_elf_section_change_hook
1226 md_elf_section_change_hook ();
1230 /* Change to the *ABS* section. */
1233 obj_elf_struct (int i
)
1235 #ifdef md_flush_pending_output
1236 md_flush_pending_output ();
1239 previous_section
= now_seg
;
1240 previous_subsection
= now_subseg
;
1243 #ifdef md_elf_section_change_hook
1244 md_elf_section_change_hook ();
1249 obj_elf_subsection (int ignore ATTRIBUTE_UNUSED
)
1253 #ifdef md_flush_pending_output
1254 md_flush_pending_output ();
1257 previous_section
= now_seg
;
1258 previous_subsection
= now_subseg
;
1260 temp
= get_absolute_expression ();
1261 subseg_set (now_seg
, (subsegT
) temp
);
1262 demand_empty_rest_of_line ();
1264 #ifdef md_elf_section_change_hook
1265 md_elf_section_change_hook ();
1269 /* This can be called from the processor backends if they change
1273 obj_elf_section_change_hook (void)
1275 previous_section
= now_seg
;
1276 previous_subsection
= now_subseg
;
1280 obj_elf_previous (int ignore ATTRIBUTE_UNUSED
)
1285 if (previous_section
== 0)
1287 as_warn (_(".previous without corresponding .section; ignored"));
1291 #ifdef md_flush_pending_output
1292 md_flush_pending_output ();
1295 new_section
= previous_section
;
1296 new_subsection
= previous_subsection
;
1297 previous_section
= now_seg
;
1298 previous_subsection
= now_subseg
;
1299 subseg_set (new_section
, new_subsection
);
1301 #ifdef md_elf_section_change_hook
1302 md_elf_section_change_hook ();
1307 obj_elf_popsection (int xxx ATTRIBUTE_UNUSED
)
1309 struct section_stack
*top
= section_stack
;
1313 as_warn (_(".popsection without corresponding .pushsection; ignored"));
1317 #ifdef md_flush_pending_output
1318 md_flush_pending_output ();
1321 section_stack
= top
->next
;
1322 previous_section
= top
->prev_seg
;
1323 previous_subsection
= top
->prev_subseg
;
1324 subseg_set (top
->seg
, top
->subseg
);
1327 #ifdef md_elf_section_change_hook
1328 md_elf_section_change_hook ();
1333 obj_elf_line (int ignore ATTRIBUTE_UNUSED
)
1335 /* Assume delimiter is part of expression. BSD4.2 as fails with
1336 delightful bug, so we are not being incompatible here. */
1337 new_logical_line (NULL
, get_absolute_expression ());
1338 demand_empty_rest_of_line ();
1341 /* This handles the .symver pseudo-op, which is used to specify a
1342 symbol version. The syntax is ``.symver NAME,SYMVERNAME''.
1343 SYMVERNAME may contain ELF_VER_CHR ('@') characters. This
1344 pseudo-op causes the assembler to emit a symbol named SYMVERNAME
1345 with the same value as the symbol NAME. */
1348 obj_elf_symver (int ignore ATTRIBUTE_UNUSED
)
1355 sym
= get_sym_from_input_line_and_check ();
1357 if (*input_line_pointer
!= ',')
1359 as_bad (_("expected comma after name in .symver"));
1360 ignore_rest_of_line ();
1364 ++input_line_pointer
;
1367 /* Temporarily include '@' in symbol names. */
1368 old_lexat
= lex_type
[(unsigned char) '@'];
1369 lex_type
[(unsigned char) '@'] |= LEX_NAME
;
1370 c
= get_symbol_name (& name
);
1371 lex_type
[(unsigned char) '@'] = old_lexat
;
1373 if (symbol_get_obj (sym
)->versioned_name
== NULL
)
1375 symbol_get_obj (sym
)->versioned_name
= xstrdup (name
);
1377 (void) restore_line_pointer (c
);
1379 if (strchr (symbol_get_obj (sym
)->versioned_name
,
1380 ELF_VER_CHR
) == NULL
)
1382 as_bad (_("missing version name in `%s' for symbol `%s'"),
1383 symbol_get_obj (sym
)->versioned_name
,
1385 ignore_rest_of_line ();
1391 if (strcmp (symbol_get_obj (sym
)->versioned_name
, name
))
1393 as_bad (_("multiple versions [`%s'|`%s'] for symbol `%s'"),
1394 name
, symbol_get_obj (sym
)->versioned_name
,
1396 ignore_rest_of_line ();
1400 (void) restore_line_pointer (c
);
1403 demand_empty_rest_of_line ();
1406 /* This handles the .vtable_inherit pseudo-op, which is used to indicate
1407 to the linker the hierarchy in which a particular table resides. The
1408 syntax is ".vtable_inherit CHILDNAME, PARENTNAME". */
1411 obj_elf_vtable_inherit (int ignore ATTRIBUTE_UNUSED
)
1413 char *cname
, *pname
;
1414 symbolS
*csym
, *psym
;
1417 if (*input_line_pointer
== '#')
1418 ++input_line_pointer
;
1420 c
= get_symbol_name (& cname
);
1421 csym
= symbol_find (cname
);
1423 /* GCFIXME: should check that we don't have two .vtable_inherits for
1424 the same child symbol. Also, we can currently only do this if the
1425 child symbol is already exists and is placed in a fragment. */
1427 if (csym
== NULL
|| symbol_get_frag (csym
) == NULL
)
1429 as_bad (_("expected `%s' to have already been set for .vtable_inherit"),
1434 *input_line_pointer
= c
;
1436 SKIP_WHITESPACE_AFTER_NAME ();
1437 if (*input_line_pointer
!= ',')
1439 as_bad (_("expected comma after name in .vtable_inherit"));
1440 ignore_rest_of_line ();
1444 ++input_line_pointer
;
1447 if (*input_line_pointer
== '#')
1448 ++input_line_pointer
;
1450 if (input_line_pointer
[0] == '0'
1451 && (input_line_pointer
[1] == '\0'
1452 || ISSPACE (input_line_pointer
[1])))
1454 psym
= section_symbol (absolute_section
);
1455 ++input_line_pointer
;
1459 c
= get_symbol_name (& pname
);
1460 psym
= symbol_find_or_make (pname
);
1461 restore_line_pointer (c
);
1464 demand_empty_rest_of_line ();
1469 gas_assert (symbol_get_value_expression (csym
)->X_op
== O_constant
);
1470 return fix_new (symbol_get_frag (csym
),
1471 symbol_get_value_expression (csym
)->X_add_number
,
1472 0, psym
, 0, 0, BFD_RELOC_VTABLE_INHERIT
);
1475 /* This handles the .vtable_entry pseudo-op, which is used to indicate
1476 to the linker that a vtable slot was used. The syntax is
1477 ".vtable_entry tablename, offset". */
1480 obj_elf_vtable_entry (int ignore ATTRIBUTE_UNUSED
)
1485 if (*input_line_pointer
== '#')
1486 ++input_line_pointer
;
1488 sym
= get_sym_from_input_line_and_check ();
1489 if (*input_line_pointer
!= ',')
1491 as_bad (_("expected comma after name in .vtable_entry"));
1492 ignore_rest_of_line ();
1496 ++input_line_pointer
;
1497 if (*input_line_pointer
== '#')
1498 ++input_line_pointer
;
1500 offset
= get_absolute_expression ();
1502 demand_empty_rest_of_line ();
1504 return fix_new (frag_now
, frag_now_fix (), 0, sym
, offset
, 0,
1505 BFD_RELOC_VTABLE_ENTRY
);
1508 #define skip_whitespace(str) do { if (*(str) == ' ') ++(str); } while (0)
1511 skip_past_char (char ** str
, char c
)
1521 #define skip_past_comma(str) skip_past_char (str, ',')
1523 /* A list of attributes that have been explicitly set by the assembly code.
1524 VENDOR is the vendor id, BASE is the tag shifted right by the number
1525 of bits in MASK, and bit N of MASK is set if tag BASE+N has been set. */
1526 struct recorded_attribute_info
{
1527 struct recorded_attribute_info
*next
;
1532 static struct recorded_attribute_info
*recorded_attributes
;
1534 /* Record that we have seen an explicit specification of attribute TAG
1535 for vendor VENDOR. */
1538 record_attribute (int vendor
, unsigned int tag
)
1542 struct recorded_attribute_info
*rai
;
1544 base
= tag
/ (8 * sizeof (rai
->mask
));
1545 mask
= 1UL << (tag
% (8 * sizeof (rai
->mask
)));
1546 for (rai
= recorded_attributes
; rai
; rai
= rai
->next
)
1547 if (rai
->vendor
== vendor
&& rai
->base
== base
)
1553 rai
= XNEW (struct recorded_attribute_info
);
1554 rai
->next
= recorded_attributes
;
1555 rai
->vendor
= vendor
;
1558 recorded_attributes
= rai
;
1561 /* Return true if we have seen an explicit specification of attribute TAG
1562 for vendor VENDOR. */
1565 obj_elf_seen_attribute (int vendor
, unsigned int tag
)
1569 struct recorded_attribute_info
*rai
;
1571 base
= tag
/ (8 * sizeof (rai
->mask
));
1572 mask
= 1UL << (tag
% (8 * sizeof (rai
->mask
)));
1573 for (rai
= recorded_attributes
; rai
; rai
= rai
->next
)
1574 if (rai
->vendor
== vendor
&& rai
->base
== base
)
1575 return (rai
->mask
& mask
) != 0;
1579 /* Parse an attribute directive for VENDOR.
1580 Returns the attribute number read, or zero on error. */
1583 obj_elf_vendor_attribute (int vendor
)
1591 /* Read the first number or name. */
1592 skip_whitespace (input_line_pointer
);
1593 s
= input_line_pointer
;
1594 if (ISDIGIT (*input_line_pointer
))
1597 if (exp
.X_op
!= O_constant
)
1599 tag
= exp
.X_add_number
;
1605 /* A name may contain '_', but no other punctuation. */
1606 for (; ISALNUM (*input_line_pointer
) || *input_line_pointer
== '_';
1607 ++input_line_pointer
)
1612 name
= xstrndup (s
, i
);
1614 #ifndef CONVERT_SYMBOLIC_ATTRIBUTE
1615 #define CONVERT_SYMBOLIC_ATTRIBUTE(a) -1
1618 tag
= CONVERT_SYMBOLIC_ATTRIBUTE (name
);
1621 as_bad (_("Attribute name not recognised: %s"), name
);
1622 ignore_rest_of_line ();
1629 type
= _bfd_elf_obj_attrs_arg_type (stdoutput
, vendor
, tag
);
1631 if (skip_past_comma (&input_line_pointer
) == -1)
1636 if (exp
.X_op
!= O_constant
)
1638 as_bad (_("expected numeric constant"));
1639 ignore_rest_of_line ();
1642 i
= exp
.X_add_number
;
1645 && skip_past_comma (&input_line_pointer
) == -1)
1647 as_bad (_("expected comma"));
1648 ignore_rest_of_line ();
1655 skip_whitespace (input_line_pointer
);
1656 if (*input_line_pointer
!= '"')
1658 s
= demand_copy_C_string (&len
);
1661 record_attribute (vendor
, tag
);
1665 bfd_elf_add_obj_attr_int_string (stdoutput
, vendor
, tag
, i
, s
);
1668 bfd_elf_add_obj_attr_string (stdoutput
, vendor
, tag
, s
);
1671 bfd_elf_add_obj_attr_int (stdoutput
, vendor
, tag
, i
);
1677 demand_empty_rest_of_line ();
1680 as_bad (_("bad string constant"));
1681 ignore_rest_of_line ();
1684 as_bad (_("expected <tag> , <value>"));
1685 ignore_rest_of_line ();
1689 /* Parse a .gnu_attribute directive. */
1692 obj_elf_gnu_attribute (int ignored ATTRIBUTE_UNUSED
)
1694 obj_elf_vendor_attribute (OBJ_ATTR_GNU
);
1698 elf_obj_read_begin_hook (void)
1700 #ifdef NEED_ECOFF_DEBUG
1701 if (ECOFF_DEBUGGING
)
1702 ecoff_read_begin_hook ();
1707 elf_obj_symbol_new_hook (symbolS
*symbolP
)
1709 struct elf_obj_sy
*sy_obj
;
1711 sy_obj
= symbol_get_obj (symbolP
);
1712 sy_obj
->size
= NULL
;
1713 sy_obj
->versioned_name
= NULL
;
1715 #ifdef NEED_ECOFF_DEBUG
1716 if (ECOFF_DEBUGGING
)
1717 ecoff_symbol_new_hook (symbolP
);
1721 /* When setting one symbol equal to another, by default we probably
1722 want them to have the same "size", whatever it means in the current
1726 elf_copy_symbol_attributes (symbolS
*dest
, symbolS
*src
)
1728 struct elf_obj_sy
*srcelf
= symbol_get_obj (src
);
1729 struct elf_obj_sy
*destelf
= symbol_get_obj (dest
);
1732 if (destelf
->size
== NULL
)
1733 destelf
->size
= XNEW (expressionS
);
1734 *destelf
->size
= *srcelf
->size
;
1738 if (destelf
->size
!= NULL
)
1739 free (destelf
->size
);
1740 destelf
->size
= NULL
;
1742 S_SET_SIZE (dest
, S_GET_SIZE (src
));
1743 /* Don't copy visibility. */
1744 S_SET_OTHER (dest
, (ELF_ST_VISIBILITY (S_GET_OTHER (dest
))
1745 | (S_GET_OTHER (src
) & ~ELF_ST_VISIBILITY (-1))));
1749 obj_elf_version (int ignore ATTRIBUTE_UNUSED
)
1754 asection
*seg
= now_seg
;
1755 subsegT subseg
= now_subseg
;
1756 Elf_Internal_Note i_note
;
1757 Elf_External_Note e_note
;
1758 asection
*note_secp
= NULL
;
1761 if (*input_line_pointer
== '\"')
1765 ++input_line_pointer
; /* -> 1st char of string. */
1766 name
= input_line_pointer
;
1768 while (is_a_char (c
= next_char_of_string ()))
1770 c
= *input_line_pointer
;
1771 *input_line_pointer
= '\0';
1772 *(input_line_pointer
- 1) = '\0';
1773 *input_line_pointer
= c
;
1775 /* Create the .note section. */
1776 note_secp
= subseg_new (".note", 0);
1777 bfd_set_section_flags (stdoutput
,
1779 SEC_HAS_CONTENTS
| SEC_READONLY
);
1781 /* Process the version string. */
1782 len
= strlen (name
) + 1;
1784 /* PR 3456: Although the name field is padded out to an 4-byte
1785 boundary, the namesz field should not be adjusted. */
1786 i_note
.namesz
= len
;
1787 i_note
.descsz
= 0; /* No description. */
1788 i_note
.type
= NT_VERSION
;
1789 p
= frag_more (sizeof (e_note
.namesz
));
1790 md_number_to_chars (p
, i_note
.namesz
, sizeof (e_note
.namesz
));
1791 p
= frag_more (sizeof (e_note
.descsz
));
1792 md_number_to_chars (p
, i_note
.descsz
, sizeof (e_note
.descsz
));
1793 p
= frag_more (sizeof (e_note
.type
));
1794 md_number_to_chars (p
, i_note
.type
, sizeof (e_note
.type
));
1795 p
= frag_more (len
);
1796 memcpy (p
, name
, len
);
1798 frag_align (2, 0, 0);
1800 subseg_set (seg
, subseg
);
1803 as_bad (_("expected quoted string"));
1805 demand_empty_rest_of_line ();
1809 obj_elf_size (int ignore ATTRIBUTE_UNUSED
)
1812 char c
= get_symbol_name (&name
);
1817 p
= input_line_pointer
;
1819 SKIP_WHITESPACE_AFTER_NAME ();
1820 if (*input_line_pointer
!= ',')
1823 as_bad (_("expected comma after name `%s' in .size directive"), name
);
1825 ignore_rest_of_line ();
1828 input_line_pointer
++;
1830 if (exp
.X_op
== O_absent
)
1832 as_bad (_("missing expression in .size directive"));
1833 exp
.X_op
= O_constant
;
1834 exp
.X_add_number
= 0;
1837 sym
= symbol_find_or_make (name
);
1839 if (exp
.X_op
== O_constant
)
1841 S_SET_SIZE (sym
, exp
.X_add_number
);
1842 if (symbol_get_obj (sym
)->size
)
1844 xfree (symbol_get_obj (sym
)->size
);
1845 symbol_get_obj (sym
)->size
= NULL
;
1850 symbol_get_obj (sym
)->size
= XNEW (expressionS
);
1851 *symbol_get_obj (sym
)->size
= exp
;
1853 demand_empty_rest_of_line ();
1856 /* Handle the ELF .type pseudo-op. This sets the type of a symbol.
1857 There are six syntaxes:
1859 The first (used on Solaris) is
1861 The second (used on UnixWare) is
1863 The third (reportedly to be used on Irix 6.0) is
1865 The fourth (used on NetBSD/Arm and Linux/ARM) is
1867 The fifth (used on SVR4/860) is
1868 .type SYM,"function"
1869 The sixth (emitted by recent SunPRO under Solaris) is
1871 where the integer is the STT_* value.
1875 obj_elf_type_name (char *cp
)
1879 p
= input_line_pointer
;
1880 if (*input_line_pointer
>= '0'
1881 && *input_line_pointer
<= '9')
1883 while (*input_line_pointer
>= '0'
1884 && *input_line_pointer
<= '9')
1885 ++input_line_pointer
;
1886 *cp
= *input_line_pointer
;
1887 *input_line_pointer
= '\0';
1890 *cp
= get_symbol_name (&p
);
1896 obj_elf_type (int ignore ATTRIBUTE_UNUSED
)
1900 const char *type_name
;
1902 elf_symbol_type
*elfsym
;
1904 sym
= get_sym_from_input_line_and_check ();
1905 c
= *input_line_pointer
;
1906 elfsym
= (elf_symbol_type
*) symbol_get_bfdsym (sym
);
1908 if (*input_line_pointer
== ',')
1909 ++input_line_pointer
;
1912 if ( *input_line_pointer
== '#'
1913 || *input_line_pointer
== '@'
1914 || *input_line_pointer
== '"'
1915 || *input_line_pointer
== '%')
1916 ++input_line_pointer
;
1918 type_name
= obj_elf_type_name (& c
);
1921 if (strcmp (type_name
, "function") == 0
1922 || strcmp (type_name
, "2") == 0
1923 || strcmp (type_name
, "STT_FUNC") == 0)
1924 type
= BSF_FUNCTION
;
1925 else if (strcmp (type_name
, "object") == 0
1926 || strcmp (type_name
, "1") == 0
1927 || strcmp (type_name
, "STT_OBJECT") == 0)
1929 else if (strcmp (type_name
, "tls_object") == 0
1930 || strcmp (type_name
, "6") == 0
1931 || strcmp (type_name
, "STT_TLS") == 0)
1932 type
= BSF_OBJECT
| BSF_THREAD_LOCAL
;
1933 else if (strcmp (type_name
, "notype") == 0
1934 || strcmp (type_name
, "0") == 0
1935 || strcmp (type_name
, "STT_NOTYPE") == 0)
1937 else if (strcmp (type_name
, "common") == 0
1938 || strcmp (type_name
, "5") == 0
1939 || strcmp (type_name
, "STT_COMMON") == 0)
1943 if (! S_IS_COMMON (sym
))
1945 if (S_IS_VOLATILE (sym
))
1947 sym
= symbol_clone (sym
, 1);
1948 S_SET_SEGMENT (sym
, bfd_com_section_ptr
);
1949 S_SET_VALUE (sym
, 0);
1950 S_SET_EXTERNAL (sym
);
1951 symbol_set_frag (sym
, &zero_address_frag
);
1952 S_CLEAR_VOLATILE (sym
);
1954 else if (S_IS_DEFINED (sym
) || symbol_equated_p (sym
))
1955 as_bad (_("symbol '%s' is already defined"), S_GET_NAME (sym
));
1958 /* FIXME: Is it safe to just change the section ? */
1959 S_SET_SEGMENT (sym
, bfd_com_section_ptr
);
1960 S_SET_VALUE (sym
, 0);
1961 S_SET_EXTERNAL (sym
);
1965 else if (strcmp (type_name
, "gnu_indirect_function") == 0
1966 || strcmp (type_name
, "10") == 0
1967 || strcmp (type_name
, "STT_GNU_IFUNC") == 0)
1969 const struct elf_backend_data
*bed
;
1971 bed
= get_elf_backend_data (stdoutput
);
1972 if (!(bed
->elf_osabi
== ELFOSABI_GNU
1973 || bed
->elf_osabi
== ELFOSABI_FREEBSD
1974 /* GNU is still using the default value 0. */
1975 || bed
->elf_osabi
== ELFOSABI_NONE
))
1976 as_bad (_("symbol type \"%s\" is supported only by GNU and FreeBSD targets"),
1978 type
= BSF_FUNCTION
| BSF_GNU_INDIRECT_FUNCTION
;
1980 else if (strcmp (type_name
, "gnu_unique_object") == 0)
1982 struct elf_backend_data
*bed
;
1984 bed
= (struct elf_backend_data
*) get_elf_backend_data (stdoutput
);
1985 if (!(bed
->elf_osabi
== ELFOSABI_GNU
1986 /* GNU is still using the default value 0. */
1987 || bed
->elf_osabi
== ELFOSABI_NONE
))
1988 as_bad (_("symbol type \"%s\" is supported only by GNU targets"),
1990 type
= BSF_OBJECT
| BSF_GNU_UNIQUE
;
1991 /* PR 10549: Always set OSABI field to GNU for objects containing unique symbols. */
1992 bed
->elf_osabi
= ELFOSABI_GNU
;
1994 #ifdef md_elf_symbol_type
1995 else if ((type
= md_elf_symbol_type (type_name
, sym
, elfsym
)) != -1)
1999 as_bad (_("unrecognized symbol type \"%s\""), type_name
);
2001 *input_line_pointer
= c
;
2003 if (*input_line_pointer
== '"')
2004 ++input_line_pointer
;
2006 elfsym
->symbol
.flags
|= type
;
2008 demand_empty_rest_of_line ();
2012 obj_elf_ident (int ignore ATTRIBUTE_UNUSED
)
2014 static segT comment_section
;
2015 segT old_section
= now_seg
;
2016 int old_subsection
= now_subseg
;
2018 #ifdef md_flush_pending_output
2019 md_flush_pending_output ();
2022 if (!comment_section
)
2025 comment_section
= subseg_new (".comment", 0);
2026 bfd_set_section_flags (stdoutput
, comment_section
,
2027 SEC_READONLY
| SEC_HAS_CONTENTS
2028 | SEC_MERGE
| SEC_STRINGS
);
2029 comment_section
->entsize
= 1;
2030 #ifdef md_elf_section_change_hook
2031 md_elf_section_change_hook ();
2037 subseg_set (comment_section
, 0);
2039 subseg_set (old_section
, old_subsection
);
2042 #ifdef INIT_STAB_SECTION
2044 /* The first entry in a .stabs section is special. */
2047 obj_elf_init_stab_section (segT seg
)
2052 unsigned int stroff
;
2054 /* Force the section to align to a longword boundary. Without this,
2055 UnixWare ar crashes. */
2056 bfd_set_section_alignment (stdoutput
, seg
, 2);
2058 /* Make space for this first symbol. */
2062 file
= as_where (NULL
);
2063 stabstr_name
= (char *) xmalloc (strlen (segment_name (seg
)) + 4);
2064 strcpy (stabstr_name
, segment_name (seg
));
2065 strcat (stabstr_name
, "str");
2066 stroff
= get_stab_string_offset (file
, stabstr_name
);
2067 know (stroff
== 1 || (stroff
== 0 && file
[0] == '\0'));
2068 md_number_to_chars (p
, stroff
, 4);
2069 seg_info (seg
)->stabu
.p
= p
;
2074 /* Fill in the counts in the first entry in a .stabs section. */
2077 adjust_stab_sections (bfd
*abfd
, asection
*sec
, void *xxx ATTRIBUTE_UNUSED
)
2084 if (strncmp (".stab", sec
->name
, 5))
2086 if (!strcmp ("str", sec
->name
+ strlen (sec
->name
) - 3))
2089 name
= concat (sec
->name
, "str", NULL
);
2090 strsec
= bfd_get_section_by_name (abfd
, name
);
2092 strsz
= bfd_section_size (abfd
, strsec
);
2095 nsyms
= bfd_section_size (abfd
, sec
) / 12 - 1;
2097 p
= seg_info (sec
)->stabu
.p
;
2098 gas_assert (p
!= 0);
2100 bfd_h_put_16 (abfd
, nsyms
, p
+ 6);
2101 bfd_h_put_32 (abfd
, strsz
, p
+ 8);
2105 #ifdef NEED_ECOFF_DEBUG
2107 /* This function is called by the ECOFF code. It is supposed to
2108 record the external symbol information so that the backend can
2109 write it out correctly. The ELF backend doesn't actually handle
2110 this at the moment, so we do it ourselves. We save the information
2113 #ifdef OBJ_MAYBE_ELF
2117 elf_ecoff_set_ext (symbolS
*sym
, struct ecoff_extr
*ext
)
2119 symbol_get_bfdsym (sym
)->udata
.p
= ext
;
2122 /* This function is called by bfd_ecoff_debug_externals. It is
2123 supposed to *EXT to the external symbol information, and return
2124 whether the symbol should be used at all. */
2127 elf_get_extr (asymbol
*sym
, EXTR
*ext
)
2129 if (sym
->udata
.p
== NULL
)
2131 *ext
= *(EXTR
*) sym
->udata
.p
;
2135 /* This function is called by bfd_ecoff_debug_externals. It has
2136 nothing to do for ELF. */
2139 elf_set_index (asymbol
*sym ATTRIBUTE_UNUSED
,
2140 bfd_size_type indx ATTRIBUTE_UNUSED
)
2144 #endif /* NEED_ECOFF_DEBUG */
2147 elf_frob_symbol (symbolS
*symp
, int *puntp
)
2149 struct elf_obj_sy
*sy_obj
;
2152 #ifdef NEED_ECOFF_DEBUG
2153 if (ECOFF_DEBUGGING
)
2154 ecoff_frob_symbol (symp
);
2157 sy_obj
= symbol_get_obj (symp
);
2159 size
= sy_obj
->size
;
2162 if (resolve_expression (size
)
2163 && size
->X_op
== O_constant
)
2164 S_SET_SIZE (symp
, size
->X_add_number
);
2167 if (!flag_allow_nonconst_size
)
2168 as_bad (_(".size expression for %s "
2169 "does not evaluate to a constant"), S_GET_NAME (symp
));
2171 as_warn (_(".size expression for %s "
2172 "does not evaluate to a constant"), S_GET_NAME (symp
));
2174 free (sy_obj
->size
);
2175 sy_obj
->size
= NULL
;
2178 if (sy_obj
->versioned_name
!= NULL
)
2182 p
= strchr (sy_obj
->versioned_name
, ELF_VER_CHR
);
2184 /* We will have already reported an error about a missing version. */
2187 /* This symbol was given a new name with the .symver directive.
2189 If this is an external reference, just rename the symbol to
2190 include the version string. This will make the relocs be
2191 against the correct versioned symbol.
2193 If this is a definition, add an alias. FIXME: Using an alias
2194 will permit the debugging information to refer to the right
2195 symbol. However, it's not clear whether it is the best
2198 else if (! S_IS_DEFINED (symp
))
2200 /* Verify that the name isn't using the @@ syntax--this is
2201 reserved for definitions of the default version to link
2203 if (p
[1] == ELF_VER_CHR
)
2205 as_bad (_("invalid attempt to declare external version name"
2206 " as default in symbol `%s'"),
2207 sy_obj
->versioned_name
);
2210 S_SET_NAME (symp
, sy_obj
->versioned_name
);
2214 if (p
[1] == ELF_VER_CHR
&& p
[2] == ELF_VER_CHR
)
2218 /* The @@@ syntax is a special case. It renames the
2219 symbol name to versioned_name with one `@' removed. */
2220 l
= strlen (&p
[3]) + 1;
2221 memmove (&p
[2], &p
[3], l
);
2222 S_SET_NAME (symp
, sy_obj
->versioned_name
);
2228 /* FIXME: Creating a new symbol here is risky. We're
2229 in the final loop over the symbol table. We can
2230 get away with it only because the symbol goes to
2231 the end of the list, where the loop will still see
2232 it. It would probably be better to do this in
2233 obj_frob_file_before_adjust. */
2235 symp2
= symbol_find_or_make (sy_obj
->versioned_name
);
2237 /* Now we act as though we saw symp2 = sym. */
2239 S_SET_SEGMENT (symp2
, S_GET_SEGMENT (symp
));
2241 /* Subtracting out the frag address here is a hack
2242 because we are in the middle of the final loop. */
2245 - symbol_get_frag (symp
)->fr_address
));
2247 symbol_set_frag (symp2
, symbol_get_frag (symp
));
2249 /* This will copy over the size information. */
2250 copy_symbol_attributes (symp2
, symp
);
2252 S_SET_OTHER (symp2
, S_GET_OTHER (symp
));
2254 if (S_IS_WEAK (symp
))
2257 if (S_IS_EXTERNAL (symp
))
2258 S_SET_EXTERNAL (symp2
);
2263 /* Double check weak symbols. */
2264 if (S_IS_WEAK (symp
))
2266 if (S_IS_COMMON (symp
))
2267 as_bad (_("symbol `%s' can not be both weak and common"),
2272 /* The Irix 5 and 6 assemblers set the type of any common symbol and
2273 any undefined non-function symbol to STT_OBJECT. We try to be
2274 compatible, since newer Irix 5 and 6 linkers care. However, we
2275 only set undefined symbols to be STT_OBJECT if we are on Irix,
2276 because that is the only time gcc will generate the necessary
2277 .global directives to mark functions. */
2279 if (S_IS_COMMON (symp
))
2280 symbol_get_bfdsym (symp
)->flags
|= BSF_OBJECT
;
2282 if (strstr (TARGET_OS
, "irix") != NULL
2283 && ! S_IS_DEFINED (symp
)
2284 && (symbol_get_bfdsym (symp
)->flags
& BSF_FUNCTION
) == 0)
2285 symbol_get_bfdsym (symp
)->flags
|= BSF_OBJECT
;
2291 asection
**head
; /* Section lists. */
2292 unsigned int *elt_count
; /* Number of sections in each list. */
2293 unsigned int num_group
; /* Number of lists. */
2294 struct hash_control
*indexes
; /* Maps group name to index in head array. */
2297 /* Called via bfd_map_over_sections. If SEC is a member of a group,
2298 add it to a list of sections belonging to the group. INF is a
2299 pointer to a struct group_list, which is where we store the head of
2303 build_group_lists (bfd
*abfd ATTRIBUTE_UNUSED
, asection
*sec
, void *inf
)
2305 struct group_list
*list
= (struct group_list
*) inf
;
2306 const char *group_name
= elf_group_name (sec
);
2308 unsigned int *elem_idx
;
2309 unsigned int *idx_ptr
;
2311 if (group_name
== NULL
)
2314 /* If this group already has a list, add the section to the head of
2316 elem_idx
= (unsigned int *) hash_find (list
->indexes
, group_name
);
2317 if (elem_idx
!= NULL
)
2319 elf_next_in_group (sec
) = list
->head
[*elem_idx
];
2320 list
->head
[*elem_idx
] = sec
;
2321 list
->elt_count
[*elem_idx
] += 1;
2325 /* New group. Make the arrays bigger in chunks to minimize calls to
2327 i
= list
->num_group
;
2330 unsigned int newsize
= i
+ 128;
2331 list
->head
= (asection
**) xrealloc (list
->head
,
2332 newsize
* sizeof (*list
->head
));
2333 list
->elt_count
= (unsigned int *)
2334 xrealloc (list
->elt_count
, newsize
* sizeof (*list
->elt_count
));
2336 list
->head
[i
] = sec
;
2337 list
->elt_count
[i
] = 1;
2338 list
->num_group
+= 1;
2340 /* Add index to hash. */
2341 idx_ptr
= XNEW (unsigned int);
2343 hash_insert (list
->indexes
, group_name
, idx_ptr
);
2346 static void free_section_idx (const char *key ATTRIBUTE_UNUSED
, void *val
)
2348 free ((unsigned int *) val
);
2352 elf_adjust_symtab (void)
2354 struct group_list list
;
2357 /* Go find section groups. */
2360 list
.elt_count
= NULL
;
2361 list
.indexes
= hash_new ();
2362 bfd_map_over_sections (stdoutput
, build_group_lists
, &list
);
2364 /* Make the SHT_GROUP sections that describe each section group. We
2365 can't set up the section contents here yet, because elf section
2366 indices have yet to be calculated. elf.c:set_group_contents does
2367 the rest of the work. */
2368 for (i
= 0; i
< list
.num_group
; i
++)
2370 const char *group_name
= elf_group_name (list
.head
[i
]);
2371 const char *sec_name
;
2377 flags
= SEC_READONLY
| SEC_HAS_CONTENTS
| SEC_IN_MEMORY
| SEC_GROUP
;
2378 for (s
= list
.head
[i
]; s
!= NULL
; s
= elf_next_in_group (s
))
2379 if ((s
->flags
^ flags
) & SEC_LINK_ONCE
)
2381 flags
|= SEC_LINK_ONCE
| SEC_LINK_DUPLICATES_DISCARD
;
2382 if (s
!= list
.head
[i
])
2384 as_warn (_("assuming all members of group `%s' are COMDAT"),
2390 sec_name
= ".group";
2391 s
= subseg_force_new (sec_name
, 0);
2393 || !bfd_set_section_flags (stdoutput
, s
, flags
)
2394 || !bfd_set_section_alignment (stdoutput
, s
, 2))
2396 as_fatal (_("can't create group: %s"),
2397 bfd_errmsg (bfd_get_error ()));
2399 elf_section_type (s
) = SHT_GROUP
;
2401 /* Pass a pointer to the first section in this group. */
2402 elf_next_in_group (s
) = list
.head
[i
];
2403 /* Make sure that the signature symbol for the group has the
2404 name of the group. */
2405 sy
= symbol_find_exact (group_name
);
2407 || (sy
!= symbol_lastP
2408 && (sy
->sy_next
== NULL
2409 || sy
->sy_next
->sy_previous
!= sy
)))
2411 /* Create the symbol now. */
2412 sy
= symbol_new (group_name
, now_seg
, (valueT
) 0, frag_now
);
2414 /* Before Solaris 11 build 154, Sun ld rejects local group
2415 signature symbols, so make them weak hidden instead. */
2416 symbol_get_bfdsym (sy
)->flags
|= BSF_WEAK
;
2417 S_SET_OTHER (sy
, STV_HIDDEN
);
2419 symbol_get_obj (sy
)->local
= 1;
2421 symbol_table_insert (sy
);
2423 elf_group_id (s
) = symbol_get_bfdsym (sy
);
2425 size
= 4 * (list
.elt_count
[i
] + 1);
2426 bfd_set_section_size (stdoutput
, s
, size
);
2427 s
->contents
= (unsigned char *) frag_more (size
);
2428 frag_now
->fr_fix
= frag_now_fix_octets ();
2429 frag_wane (frag_now
);
2433 hash_traverse (list
.indexes
, free_section_idx
);
2434 hash_die (list
.indexes
);
2438 elf_frob_file (void)
2440 bfd_map_over_sections (stdoutput
, adjust_stab_sections
, NULL
);
2442 #ifdef elf_tc_final_processing
2443 elf_tc_final_processing ();
2447 /* It removes any unneeded versioned symbols from the symbol table. */
2450 elf_frob_file_before_adjust (void)
2456 for (symp
= symbol_rootP
; symp
; symp
= symbol_next (symp
))
2457 if (!S_IS_DEFINED (symp
))
2459 if (symbol_get_obj (symp
)->versioned_name
)
2463 /* The @@@ syntax is a special case. If the symbol is
2464 not defined, 2 `@'s will be removed from the
2467 p
= strchr (symbol_get_obj (symp
)->versioned_name
,
2469 if (p
!= NULL
&& p
[1] == ELF_VER_CHR
&& p
[2] == ELF_VER_CHR
)
2471 size_t l
= strlen (&p
[3]) + 1;
2472 memmove (&p
[1], &p
[3], l
);
2474 if (symbol_used_p (symp
) == 0
2475 && symbol_used_in_reloc_p (symp
) == 0)
2476 symbol_remove (symp
, &symbol_rootP
, &symbol_lastP
);
2479 /* If there was .weak foo, but foo was neither defined nor
2480 used anywhere, remove it. */
2482 else if (S_IS_WEAK (symp
)
2483 && symbol_used_p (symp
) == 0
2484 && symbol_used_in_reloc_p (symp
) == 0)
2485 symbol_remove (symp
, &symbol_rootP
, &symbol_lastP
);
2490 /* It is required that we let write_relocs have the opportunity to
2491 optimize away fixups before output has begun, since it is possible
2492 to eliminate all fixups for a section and thus we never should
2493 have generated the relocation section. */
2496 elf_frob_file_after_relocs (void)
2498 #ifdef NEED_ECOFF_DEBUG
2499 if (ECOFF_DEBUGGING
)
2500 /* Generate the ECOFF debugging information. */
2502 const struct ecoff_debug_swap
*debug_swap
;
2503 struct ecoff_debug_info debug
;
2508 = get_elf_backend_data (stdoutput
)->elf_backend_ecoff_debug_swap
;
2509 know (debug_swap
!= NULL
);
2510 ecoff_build_debug (&debug
.symbolic_header
, &buf
, debug_swap
);
2512 /* Set up the pointers in debug. */
2513 #define SET(ptr, offset, type) \
2514 debug.ptr = (type) (buf + debug.symbolic_header.offset)
2516 SET (line
, cbLineOffset
, unsigned char *);
2517 SET (external_dnr
, cbDnOffset
, void *);
2518 SET (external_pdr
, cbPdOffset
, void *);
2519 SET (external_sym
, cbSymOffset
, void *);
2520 SET (external_opt
, cbOptOffset
, void *);
2521 SET (external_aux
, cbAuxOffset
, union aux_ext
*);
2522 SET (ss
, cbSsOffset
, char *);
2523 SET (external_fdr
, cbFdOffset
, void *);
2524 SET (external_rfd
, cbRfdOffset
, void *);
2525 /* ssext and external_ext are set up just below. */
2529 /* Set up the external symbols. */
2530 debug
.ssext
= debug
.ssext_end
= NULL
;
2531 debug
.external_ext
= debug
.external_ext_end
= NULL
;
2532 if (! bfd_ecoff_debug_externals (stdoutput
, &debug
, debug_swap
, TRUE
,
2533 elf_get_extr
, elf_set_index
))
2534 as_fatal (_("failed to set up debugging information: %s"),
2535 bfd_errmsg (bfd_get_error ()));
2537 sec
= bfd_get_section_by_name (stdoutput
, ".mdebug");
2538 gas_assert (sec
!= NULL
);
2540 know (!stdoutput
->output_has_begun
);
2542 /* We set the size of the section, call bfd_set_section_contents
2543 to force the ELF backend to allocate a file position, and then
2544 write out the data. FIXME: Is this really the best way to do
2546 bfd_set_section_size
2547 (stdoutput
, sec
, bfd_ecoff_debug_size (stdoutput
, &debug
, debug_swap
));
2549 /* Pass BUF to bfd_set_section_contents because this will
2550 eventually become a call to fwrite, and ISO C prohibits
2551 passing a NULL pointer to a stdio function even if the
2552 pointer will not be used. */
2553 if (! bfd_set_section_contents (stdoutput
, sec
, buf
, 0, 0))
2554 as_fatal (_("can't start writing .mdebug section: %s"),
2555 bfd_errmsg (bfd_get_error ()));
2557 know (stdoutput
->output_has_begun
);
2558 know (sec
->filepos
!= 0);
2560 if (! bfd_ecoff_write_debug (stdoutput
, &debug
, debug_swap
,
2562 as_fatal (_("could not write .mdebug section: %s"),
2563 bfd_errmsg (bfd_get_error ()));
2565 #endif /* NEED_ECOFF_DEBUG */
2570 /* Heavily plagiarized from obj_elf_version. The idea is to emit the
2571 SCO specific identifier in the .notes section to satisfy the SCO
2574 This looks more complicated than it really is. As opposed to the
2575 "obvious" solution, this should handle the cross dev cases
2576 correctly. (i.e, hosting on a 64 bit big endian processor, but
2577 generating SCO Elf code) Efficiency isn't a concern, as there
2578 should be exactly one of these sections per object module.
2580 SCO OpenServer 5 identifies it's ELF modules with a standard ELF
2583 int_32 namesz = 4 ; Name size
2584 int_32 descsz = 12 ; Descriptive information
2586 char name[4] = "SCO" ; Originator name ALWAYS SCO + NULL
2587 int_32 version = (major ver # << 16) | version of tools ;
2588 int_32 source = (tool_id << 16 ) | 1 ;
2589 int_32 info = 0 ; These are set by the SCO tools, but we
2590 don't know enough about the source
2591 environment to set them. SCO ld currently
2592 ignores them, and recommends we set them
2595 #define SCO_MAJOR_VERSION 0x1
2596 #define SCO_MINOR_VERSION 0x1
2606 asection
*seg
= now_seg
;
2607 subsegT subseg
= now_subseg
;
2608 Elf_Internal_Note i_note
;
2609 Elf_External_Note e_note
;
2610 asection
*note_secp
= NULL
;
2613 /* create the .note section */
2615 note_secp
= subseg_new (".note", 0);
2616 bfd_set_section_flags (stdoutput
,
2618 SEC_HAS_CONTENTS
| SEC_READONLY
);
2620 /* process the version string */
2623 i_note
.descsz
= 12; /* 12 descriptive bytes */
2624 i_note
.type
= NT_VERSION
; /* Contains a version string */
2626 p
= frag_more (sizeof (i_note
.namesz
));
2627 md_number_to_chars (p
, i_note
.namesz
, 4);
2629 p
= frag_more (sizeof (i_note
.descsz
));
2630 md_number_to_chars (p
, i_note
.descsz
, 4);
2632 p
= frag_more (sizeof (i_note
.type
));
2633 md_number_to_chars (p
, i_note
.type
, 4);
2638 /* Note: this is the version number of the ELF we're representing */
2640 md_number_to_chars (p
, (SCO_MAJOR_VERSION
<< 16) | (SCO_MINOR_VERSION
), 4);
2642 /* Here, we pick a magic number for ourselves (yes, I "registered"
2643 it with SCO. The bottom bit shows that we are compat with the
2646 md_number_to_chars (p
, 0x4c520000 | 0x0001, 4);
2648 /* If we knew (or cared) what the source language options were, we'd
2649 fill them in here. SCO has given us permission to ignore these
2650 and just set them to zero. */
2652 md_number_to_chars (p
, 0x0000, 4);
2654 frag_align (2, 0, 0);
2656 /* We probably can't restore the current segment, for there likely
2659 subseg_set (seg
, subseg
);
2663 #endif /* SCO_ELF */
2666 elf_generate_asm_lineno (void)
2668 #ifdef NEED_ECOFF_DEBUG
2669 if (ECOFF_DEBUGGING
)
2670 ecoff_generate_asm_lineno ();
2675 elf_process_stab (segT sec ATTRIBUTE_UNUSED
,
2676 int what ATTRIBUTE_UNUSED
,
2677 const char *string ATTRIBUTE_UNUSED
,
2678 int type ATTRIBUTE_UNUSED
,
2679 int other ATTRIBUTE_UNUSED
,
2680 int desc ATTRIBUTE_UNUSED
)
2682 #ifdef NEED_ECOFF_DEBUG
2683 if (ECOFF_DEBUGGING
)
2684 ecoff_stab (sec
, what
, string
, type
, other
, desc
);
2689 elf_separate_stab_sections (void)
2691 #ifdef NEED_ECOFF_DEBUG
2692 return (!ECOFF_DEBUGGING
);
2699 elf_init_stab_section (segT seg
)
2701 #ifdef NEED_ECOFF_DEBUG
2702 if (!ECOFF_DEBUGGING
)
2704 obj_elf_init_stab_section (seg
);
2707 const struct format_ops elf_format_ops
=
2709 bfd_target_elf_flavour
,
2710 0, /* dfl_leading_underscore */
2711 1, /* emit_section_symbols */
2716 elf_frob_file_before_adjust
,
2717 0, /* obj_frob_file_before_fix */
2718 elf_frob_file_after_relocs
,
2719 elf_s_get_size
, elf_s_set_size
,
2720 elf_s_get_align
, elf_s_set_align
,
2727 elf_copy_symbol_attributes
,
2728 elf_generate_asm_lineno
,
2730 elf_separate_stab_sections
,
2731 elf_init_stab_section
,
2732 elf_sec_sym_ok_for_reloc
,
2734 #ifdef NEED_ECOFF_DEBUG
2737 0, /* ecoff_set_ext */
2739 elf_obj_read_begin_hook
,
2740 elf_obj_symbol_new_hook
,