1 /* coff object file format
2 Copyright (C) 1989-2016 Free Software Foundation, Inc.
4 This file is part of GAS.
6 GAS 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, or (at your option)
11 GAS 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 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-coff.h"
24 #include "safe-ctype.h"
26 #include "struc-symbol.h"
33 #include "coff/xcoff.h"
36 #define streq(a,b) (strcmp ((a), (b)) == 0)
37 #define strneq(a,b,n) (strncmp ((a), (b), (n)) == 0)
39 /* I think this is probably always correct. */
40 #ifndef KEEP_RELOC_INFO
41 #define KEEP_RELOC_INFO
44 /* obj_coff_section will use this macro to set a new section's
45 attributes when a directive has no valid flags or the "w" flag is
46 used. This default should be appropriate for most. */
47 #ifndef TC_COFF_SECTION_DEFAULT_ATTRIBUTES
48 #define TC_COFF_SECTION_DEFAULT_ATTRIBUTES (SEC_LOAD | SEC_DATA)
51 /* This is used to hold the symbol built by a sequence of pseudo-ops
52 from .def and .endef. */
53 static symbolS
*def_symbol_in_progress
;
55 /* PE weak alternate symbols begin with this string. */
56 static const char weak_altprefix
[] = ".weak.";
59 #include "obj-coff-seh.c"
63 unsigned long chunk_size
;
64 unsigned long element_size
;
67 unsigned long pointer
;
75 stack_init (unsigned long chunk_size
,
76 unsigned long element_size
)
80 st
= malloc (sizeof (* st
));
83 st
->data
= malloc (chunk_size
);
90 st
->size
= chunk_size
;
91 st
->chunk_size
= chunk_size
;
92 st
->element_size
= element_size
;
97 stack_push (stack
*st
, char *element
)
99 if (st
->pointer
+ st
->element_size
>= st
->size
)
101 st
->size
+= st
->chunk_size
;
102 if ((st
->data
= xrealloc (st
->data
, st
->size
)) == NULL
)
105 memcpy (st
->data
+ st
->pointer
, element
, st
->element_size
);
106 st
->pointer
+= st
->element_size
;
107 return st
->data
+ st
->pointer
;
111 stack_pop (stack
*st
)
113 if (st
->pointer
< st
->element_size
)
118 st
->pointer
-= st
->element_size
;
119 return st
->data
+ st
->pointer
;
122 /* Maintain a list of the tagnames of the structures. */
124 static struct hash_control
*tag_hash
;
129 tag_hash
= hash_new ();
133 tag_insert (const char *name
, symbolS
*symbolP
)
135 const char *error_string
;
137 if ((error_string
= hash_jam (tag_hash
, name
, (char *) symbolP
)))
138 as_fatal (_("Inserting \"%s\" into structure table failed: %s"),
143 tag_find (char *name
)
145 return (symbolS
*) hash_find (tag_hash
, name
);
149 tag_find_or_make (char *name
)
153 if ((symbolP
= tag_find (name
)) == NULL
)
155 symbolP
= symbol_new (name
, undefined_section
,
156 0, &zero_address_frag
);
158 tag_insert (S_GET_NAME (symbolP
), symbolP
);
159 symbol_table_insert (symbolP
);
165 /* We accept the .bss directive to set the section for backward
166 compatibility with earlier versions of gas. */
169 obj_coff_bss (int ignore ATTRIBUTE_UNUSED
)
171 if (*input_line_pointer
== '\n')
172 subseg_new (".bss", get_absolute_expression ());
178 /* Called from read.c:s_comm after we've parsed .comm symbol, size.
179 Parse a possible alignment value. */
182 obj_coff_common_parse (int ignore ATTRIBUTE_UNUSED
, symbolS
*symbolP
, addressT size
)
186 if (*input_line_pointer
== ',')
188 align
= parse_align (0);
189 if (align
== (addressT
) -1)
193 S_SET_VALUE (symbolP
, size
);
194 S_SET_EXTERNAL (symbolP
);
195 S_SET_SEGMENT (symbolP
, bfd_com_section_ptr
);
197 symbol_get_bfdsym (symbolP
)->flags
|= BSF_OBJECT
;
199 /* There is no S_SET_ALIGN (symbolP, align) in COFF/PE.
200 Instead we must add a note to the .drectve section. */
203 segT current_seg
= now_seg
;
204 subsegT current_subseg
= now_subseg
;
207 size_t pfxlen
, numlen
;
211 sec
= subseg_new (".drectve", 0);
212 oldflags
= bfd_get_section_flags (stdoutput
, sec
);
213 if (oldflags
== SEC_NO_FLAGS
)
215 if (!bfd_set_section_flags (stdoutput
, sec
,
216 TC_COFF_SECTION_DEFAULT_ATTRIBUTES
))
217 as_warn (_("error setting flags for \"%s\": %s"),
218 bfd_section_name (stdoutput
, sec
),
219 bfd_errmsg (bfd_get_error ()));
222 /* Emit a string. Note no NUL-termination. */
223 pfxlen
= strlen (" -aligncomm:") + 2 + strlen (S_GET_NAME (symbolP
)) + 1;
224 numlen
= snprintf (numbuff
, sizeof (numbuff
), "%d", (int) align
);
225 frag
= frag_more (pfxlen
+ numlen
);
226 (void) sprintf (frag
, " -aligncomm:\"%s\",", S_GET_NAME (symbolP
));
227 memcpy (frag
+ pfxlen
, numbuff
, numlen
);
228 /* Restore original subseg. */
229 subseg_set (current_seg
, current_subseg
);
236 obj_coff_comm (int ignore ATTRIBUTE_UNUSED
)
238 s_comm_internal (ignore
, obj_coff_common_parse
);
242 #define GET_FILENAME_STRING(X) \
243 ((char *) (&((X)->sy_symbol.ost_auxent->x_file.x_n.x_offset))[1])
247 fetch_coff_debug_section (void)
249 static segT debug_section
;
255 s
= bfd_make_debug_symbol (stdoutput
, NULL
, 0);
257 debug_section
= s
->section
;
259 return debug_section
;
263 SA_SET_SYM_ENDNDX (symbolS
*sym
, symbolS
*val
)
265 combined_entry_type
*entry
, *p
;
267 entry
= &coffsymbol (symbol_get_bfdsym (sym
))->native
[1];
268 p
= coffsymbol (symbol_get_bfdsym (val
))->native
;
269 entry
->u
.auxent
.x_sym
.x_fcnary
.x_fcn
.x_endndx
.p
= p
;
274 SA_SET_SYM_TAGNDX (symbolS
*sym
, symbolS
*val
)
276 combined_entry_type
*entry
, *p
;
278 entry
= &coffsymbol (symbol_get_bfdsym (sym
))->native
[1];
279 p
= coffsymbol (symbol_get_bfdsym (val
))->native
;
280 entry
->u
.auxent
.x_sym
.x_tagndx
.p
= p
;
285 S_GET_DATA_TYPE (symbolS
*sym
)
287 return coffsymbol (symbol_get_bfdsym (sym
))->native
->u
.syment
.n_type
;
291 S_SET_DATA_TYPE (symbolS
*sym
, int val
)
293 coffsymbol (symbol_get_bfdsym (sym
))->native
->u
.syment
.n_type
= val
;
298 S_GET_STORAGE_CLASS (symbolS
*sym
)
300 return coffsymbol (symbol_get_bfdsym (sym
))->native
->u
.syment
.n_sclass
;
304 S_SET_STORAGE_CLASS (symbolS
*sym
, int val
)
306 coffsymbol (symbol_get_bfdsym (sym
))->native
->u
.syment
.n_sclass
= val
;
310 /* Merge a debug symbol containing debug information into a normal symbol. */
313 c_symbol_merge (symbolS
*debug
, symbolS
*normal
)
315 S_SET_DATA_TYPE (normal
, S_GET_DATA_TYPE (debug
));
316 S_SET_STORAGE_CLASS (normal
, S_GET_STORAGE_CLASS (debug
));
318 if (S_GET_NUMBER_AUXILIARY (debug
) > S_GET_NUMBER_AUXILIARY (normal
))
319 /* Take the most we have. */
320 S_SET_NUMBER_AUXILIARY (normal
, S_GET_NUMBER_AUXILIARY (debug
));
322 if (S_GET_NUMBER_AUXILIARY (debug
) > 0)
323 /* Move all the auxiliary information. */
324 memcpy (SYM_AUXINFO (normal
), SYM_AUXINFO (debug
),
325 (S_GET_NUMBER_AUXILIARY (debug
)
326 * sizeof (*SYM_AUXINFO (debug
))));
328 /* Move the debug flags. */
329 SF_SET_DEBUG_FIELD (normal
, SF_GET_DEBUG_FIELD (debug
));
333 c_dot_file_symbol (const char *filename
, int appfile ATTRIBUTE_UNUSED
)
337 /* BFD converts filename to a .file symbol with an aux entry. It
338 also handles chaining. */
339 symbolP
= symbol_new (filename
, bfd_abs_section_ptr
, 0, &zero_address_frag
);
341 S_SET_STORAGE_CLASS (symbolP
, C_FILE
);
342 S_SET_NUMBER_AUXILIARY (symbolP
, 1);
344 symbol_get_bfdsym (symbolP
)->flags
= BSF_DEBUGGING
;
351 listing_source_file (filename
);
355 /* Make sure that the symbol is first on the symbol chain. */
356 if (symbol_rootP
!= symbolP
)
358 symbol_remove (symbolP
, &symbol_rootP
, &symbol_lastP
);
359 symbol_insert (symbolP
, symbol_rootP
, &symbol_rootP
, &symbol_lastP
);
363 /* Line number handling. */
367 struct line_no
*next
;
374 /* Symbol of last function, which we should hang line#s off of. */
375 static symbolS
*line_fsym
;
377 #define in_function() (line_fsym != 0)
378 #define clear_function() (line_fsym = 0)
379 #define set_function(F) (line_fsym = (F), coff_add_linesym (F))
383 coff_obj_symbol_new_hook (symbolS
*symbolP
)
385 long sz
= (OBJ_COFF_MAX_AUXENTRIES
+ 1) * sizeof (combined_entry_type
);
386 char * s
= xmalloc (sz
);
389 coffsymbol (symbol_get_bfdsym (symbolP
))->native
= (combined_entry_type
*) s
;
390 coffsymbol (symbol_get_bfdsym (symbolP
))->native
->is_sym
= TRUE
;
392 S_SET_DATA_TYPE (symbolP
, T_NULL
);
393 S_SET_STORAGE_CLASS (symbolP
, 0);
394 S_SET_NUMBER_AUXILIARY (symbolP
, 0);
396 if (S_IS_STRING (symbolP
))
397 SF_SET_STRING (symbolP
);
399 if (S_IS_LOCAL (symbolP
))
400 SF_SET_LOCAL (symbolP
);
404 coff_obj_symbol_clone_hook (symbolS
*newsymP
, symbolS
*orgsymP
)
406 long sz
= (OBJ_COFF_MAX_AUXENTRIES
+ 1) * sizeof (combined_entry_type
);
407 combined_entry_type
* s
= xmalloc (sz
);
409 memcpy (s
, coffsymbol (symbol_get_bfdsym (orgsymP
))->native
, sz
);
410 coffsymbol (symbol_get_bfdsym (newsymP
))->native
= s
;
412 SF_SET (newsymP
, SF_GET (orgsymP
));
416 /* Handle .ln directives. */
418 static symbolS
*current_lineno_sym
;
419 static struct line_no
*line_nos
;
420 /* FIXME: Blindly assume all .ln directives will be in the .text section. */
424 add_lineno (fragS
* frag
, addressT offset
, int num
)
426 struct line_no
* new_line
= xmalloc (sizeof (* new_line
));
428 if (!current_lineno_sym
)
432 /* The native aix assembler accepts negative line number. */
436 /* Zero is used as an end marker in the file. */
437 as_warn (_("Line numbers must be positive integers\n"));
440 #endif /* OBJ_XCOFF */
441 new_line
->next
= line_nos
;
442 new_line
->frag
= frag
;
443 new_line
->l
.line_number
= num
;
444 new_line
->l
.u
.offset
= offset
;
450 coff_add_linesym (symbolS
*sym
)
454 coffsymbol (symbol_get_bfdsym (current_lineno_sym
))->lineno
=
459 current_lineno_sym
= sym
;
463 obj_coff_ln (int appline
)
467 if (! appline
&& def_symbol_in_progress
!= NULL
)
469 as_warn (_(".ln pseudo-op inside .def/.endef: ignored."));
470 demand_empty_rest_of_line ();
474 l
= get_absolute_expression ();
476 /* If there is no lineno symbol, treat a .ln
477 directive as if it were a .appline directive. */
478 if (appline
|| current_lineno_sym
== NULL
)
479 new_logical_line ((char *) NULL
, l
- 1);
481 add_lineno (frag_now
, frag_now_fix (), l
);
490 l
+= coff_line_base
- 1;
491 listing_source_line (l
);
496 demand_empty_rest_of_line ();
499 /* .loc is essentially the same as .ln; parse it for assembler
503 obj_coff_loc (int ignore ATTRIBUTE_UNUSED
)
507 /* FIXME: Why do we need this check? We need it for ECOFF, but why
508 do we need it for COFF? */
509 if (now_seg
!= text_section
)
511 as_warn (_(".loc outside of .text"));
512 demand_empty_rest_of_line ();
516 if (def_symbol_in_progress
!= NULL
)
518 as_warn (_(".loc pseudo-op inside .def/.endef: ignored."));
519 demand_empty_rest_of_line ();
523 /* Skip the file number. */
525 get_absolute_expression ();
528 lineno
= get_absolute_expression ();
536 lineno
+= coff_line_base
- 1;
537 listing_source_line (lineno
);
542 demand_empty_rest_of_line ();
544 add_lineno (frag_now
, frag_now_fix (), lineno
);
547 /* Handle the .ident pseudo-op. */
550 obj_coff_ident (int ignore ATTRIBUTE_UNUSED
)
552 segT current_seg
= now_seg
;
553 subsegT current_subseg
= now_subseg
;
559 /* We could put it in .comment, but that creates an extra section
560 that shouldn't be loaded into memory, which requires linker
561 changes... For now, until proven otherwise, use .rdata. */
562 sec
= subseg_new (".rdata$zzz", 0);
563 bfd_set_section_flags (stdoutput
, sec
,
564 ((SEC_ALLOC
| SEC_LOAD
| SEC_READONLY
| SEC_DATA
)
565 & bfd_applicable_section_flags (stdoutput
)));
568 subseg_new (".comment", 0);
572 subseg_set (current_seg
, current_subseg
);
575 /* Handle .def directives.
577 One might ask : why can't we symbol_new if the symbol does not
578 already exist and fill it with debug information. Because of
579 the C_EFCN special symbol. It would clobber the value of the
580 function symbol before we have a chance to notice that it is
581 a C_EFCN. And a second reason is that the code is more clear this
582 way. (at least I think it is :-). */
584 #define SKIP_SEMI_COLON() while (*input_line_pointer++ != ';')
585 #define SKIP_WHITESPACES() while (*input_line_pointer == ' ' || \
586 *input_line_pointer == '\t') \
587 input_line_pointer++;
590 obj_coff_def (int what ATTRIBUTE_UNUSED
)
592 char name_end
; /* Char after the end of name. */
593 char *symbol_name
; /* Name of the debug symbol. */
594 char *symbol_name_copy
; /* Temporary copy of the name. */
595 unsigned int symbol_name_length
;
597 if (def_symbol_in_progress
!= NULL
)
599 as_warn (_(".def pseudo-op used inside of .def/.endef: ignored."));
600 demand_empty_rest_of_line ();
606 name_end
= get_symbol_name (&symbol_name
);
607 symbol_name_length
= strlen (symbol_name
);
608 symbol_name_copy
= xmalloc (symbol_name_length
+ 1);
609 strcpy (symbol_name_copy
, symbol_name
);
610 #ifdef tc_canonicalize_symbol_name
611 symbol_name_copy
= tc_canonicalize_symbol_name (symbol_name_copy
);
614 /* Initialize the new symbol. */
615 def_symbol_in_progress
= symbol_make (symbol_name_copy
);
616 symbol_set_frag (def_symbol_in_progress
, &zero_address_frag
);
617 S_SET_VALUE (def_symbol_in_progress
, 0);
619 if (S_IS_STRING (def_symbol_in_progress
))
620 SF_SET_STRING (def_symbol_in_progress
);
622 (void) restore_line_pointer (name_end
);
624 demand_empty_rest_of_line ();
628 obj_coff_endef (int ignore ATTRIBUTE_UNUSED
)
630 symbolS
*symbolP
= NULL
;
632 if (def_symbol_in_progress
== NULL
)
634 as_warn (_(".endef pseudo-op used outside of .def/.endef: ignored."));
635 demand_empty_rest_of_line ();
639 /* Set the section number according to storage class. */
640 switch (S_GET_STORAGE_CLASS (def_symbol_in_progress
))
645 SF_SET_TAG (def_symbol_in_progress
);
649 SF_SET_DEBUG (def_symbol_in_progress
);
650 S_SET_SEGMENT (def_symbol_in_progress
, fetch_coff_debug_section ());
654 SF_SET_LOCAL (def_symbol_in_progress
); /* Do not emit this symbol. */
657 SF_SET_PROCESS (def_symbol_in_progress
); /* Will need processing before writing. */
663 S_SET_SEGMENT (def_symbol_in_progress
, text_section
);
665 name
= S_GET_NAME (def_symbol_in_progress
);
666 if (name
[0] == '.' && name
[2] == 'f' && name
[3] == '\0')
672 if (! in_function ())
673 as_warn (_("`%s' symbol without preceding function"), name
);
674 /* Will need relocating. */
675 SF_SET_PROCESS (def_symbol_in_progress
);
681 /* The MS compilers output the actual endline, not the
682 function-relative one... we want to match without
683 changing the assembler input. */
684 SA_SET_SYM_LNNO (def_symbol_in_progress
,
685 (SA_GET_SYM_LNNO (def_symbol_in_progress
)
696 #endif /* C_AUTOARG */
703 /* According to the COFF documentation:
705 http://osr5doc.sco.com:1996/topics/COFF_SectNumFld.html
707 A special section number (-2) marks symbolic debugging symbols,
708 including structure/union/enumeration tag names, typedefs, and
709 the name of the file. A section number of -1 indicates that the
710 symbol has a value but is not relocatable. Examples of
711 absolute-valued symbols include automatic and register variables,
712 function arguments, and .eos symbols.
714 But from Ian Lance Taylor:
716 http://sources.redhat.com/ml/binutils/2000-08/msg00202.html
718 the actual tools all marked them as section -1. So the GNU COFF
719 assembler follows historical COFF assemblers.
721 However, it causes problems for djgpp
723 http://sources.redhat.com/ml/binutils/2000-08/msg00210.html
725 By defining STRICTCOFF, a COFF port can make the assembler to
726 follow the documented behavior. */
733 SF_SET_DEBUG (def_symbol_in_progress
);
734 S_SET_SEGMENT (def_symbol_in_progress
, absolute_section
);
742 S_SET_SEGMENT (def_symbol_in_progress
, absolute_section
);
753 /* Valid but set somewhere else (s_comm, s_lcomm, colon). */
760 as_warn (_("unexpected storage class %d"),
761 S_GET_STORAGE_CLASS (def_symbol_in_progress
));
765 /* Now that we have built a debug symbol, try to find if we should
766 merge with an existing symbol or not. If a symbol is C_EFCN or
767 absolute_section or untagged SEG_DEBUG it never merges. We also
768 don't merge labels, which are in a different namespace, nor
769 symbols which have not yet been defined since they are typically
770 unique, nor do we merge tags with non-tags. */
772 /* Two cases for functions. Either debug followed by definition or
773 definition followed by debug. For definition first, we will
774 merge the debug symbol into the definition. For debug first, the
775 lineno entry MUST point to the definition function or else it
776 will point off into space when obj_crawl_symbol_chain() merges
777 the debug symbol into the real symbol. Therefor, let's presume
778 the debug symbol is a real function reference. */
780 /* FIXME-SOON If for some reason the definition label/symbol is
781 never seen, this will probably leave an undefined symbol at link
784 if (S_GET_STORAGE_CLASS (def_symbol_in_progress
) == C_EFCN
785 || S_GET_STORAGE_CLASS (def_symbol_in_progress
) == C_LABEL
786 || (streq (bfd_get_section_name (stdoutput
,
787 S_GET_SEGMENT (def_symbol_in_progress
)),
789 && !SF_GET_TAG (def_symbol_in_progress
))
790 || S_GET_SEGMENT (def_symbol_in_progress
) == absolute_section
791 || ! symbol_constant_p (def_symbol_in_progress
)
792 || (symbolP
= symbol_find (S_GET_NAME (def_symbol_in_progress
))) == NULL
793 || SF_GET_TAG (def_symbol_in_progress
) != SF_GET_TAG (symbolP
))
795 /* If it already is at the end of the symbol list, do nothing */
796 if (def_symbol_in_progress
!= symbol_lastP
)
798 symbol_remove (def_symbol_in_progress
, &symbol_rootP
, &symbol_lastP
);
799 symbol_append (def_symbol_in_progress
, symbol_lastP
, &symbol_rootP
,
805 /* This symbol already exists, merge the newly created symbol
806 into the old one. This is not mandatory. The linker can
807 handle duplicate symbols correctly. But I guess that it save
808 a *lot* of space if the assembly file defines a lot of
811 /* The debug entry (def_symbol_in_progress) is merged into the
812 previous definition. */
814 c_symbol_merge (def_symbol_in_progress
, symbolP
);
815 symbol_remove (def_symbol_in_progress
, &symbol_rootP
, &symbol_lastP
);
817 def_symbol_in_progress
= symbolP
;
819 if (SF_GET_FUNCTION (def_symbol_in_progress
)
820 || SF_GET_TAG (def_symbol_in_progress
)
821 || S_GET_STORAGE_CLASS (def_symbol_in_progress
) == C_STAT
)
823 /* For functions, and tags, and static symbols, the symbol
824 *must* be where the debug symbol appears. Move the
825 existing symbol to the current place. */
826 /* If it already is at the end of the symbol list, do nothing. */
827 if (def_symbol_in_progress
!= symbol_lastP
)
829 symbol_remove (def_symbol_in_progress
, &symbol_rootP
, &symbol_lastP
);
830 symbol_append (def_symbol_in_progress
, symbol_lastP
, &symbol_rootP
, &symbol_lastP
);
835 if (SF_GET_TAG (def_symbol_in_progress
))
839 oldtag
= symbol_find (S_GET_NAME (def_symbol_in_progress
));
840 if (oldtag
== NULL
|| ! SF_GET_TAG (oldtag
))
841 tag_insert (S_GET_NAME (def_symbol_in_progress
),
842 def_symbol_in_progress
);
845 if (SF_GET_FUNCTION (def_symbol_in_progress
))
847 set_function (def_symbol_in_progress
);
848 SF_SET_PROCESS (def_symbol_in_progress
);
851 /* That is, if this is the first time we've seen the
853 symbol_table_insert (def_symbol_in_progress
);
857 def_symbol_in_progress
= NULL
;
858 demand_empty_rest_of_line ();
862 obj_coff_dim (int ignore ATTRIBUTE_UNUSED
)
866 if (def_symbol_in_progress
== NULL
)
868 as_warn (_(".dim pseudo-op used outside of .def/.endef: ignored."));
869 demand_empty_rest_of_line ();
873 S_SET_NUMBER_AUXILIARY (def_symbol_in_progress
, 1);
875 for (d_index
= 0; d_index
< DIMNUM
; d_index
++)
878 SA_SET_SYM_DIMEN (def_symbol_in_progress
, d_index
,
879 get_absolute_expression ());
881 switch (*input_line_pointer
)
884 input_line_pointer
++;
888 as_warn (_("badly formed .dim directive ignored"));
897 demand_empty_rest_of_line ();
901 obj_coff_line (int ignore ATTRIBUTE_UNUSED
)
905 if (def_symbol_in_progress
== NULL
)
907 /* Probably stabs-style line? */
912 this_base
= get_absolute_expression ();
913 if (streq (".bf", S_GET_NAME (def_symbol_in_progress
)))
914 coff_line_base
= this_base
;
916 S_SET_NUMBER_AUXILIARY (def_symbol_in_progress
, 1);
917 SA_SET_SYM_LNNO (def_symbol_in_progress
, this_base
);
919 demand_empty_rest_of_line ();
922 if (streq (".bf", S_GET_NAME (def_symbol_in_progress
)))
927 listing_source_line ((unsigned int) this_base
);
933 obj_coff_size (int ignore ATTRIBUTE_UNUSED
)
935 if (def_symbol_in_progress
== NULL
)
937 as_warn (_(".size pseudo-op used outside of .def/.endef ignored."));
938 demand_empty_rest_of_line ();
942 S_SET_NUMBER_AUXILIARY (def_symbol_in_progress
, 1);
943 SA_SET_SYM_SIZE (def_symbol_in_progress
, get_absolute_expression ());
944 demand_empty_rest_of_line ();
948 obj_coff_scl (int ignore ATTRIBUTE_UNUSED
)
950 if (def_symbol_in_progress
== NULL
)
952 as_warn (_(".scl pseudo-op used outside of .def/.endef ignored."));
953 demand_empty_rest_of_line ();
957 S_SET_STORAGE_CLASS (def_symbol_in_progress
, get_absolute_expression ());
958 demand_empty_rest_of_line ();
962 obj_coff_tag (int ignore ATTRIBUTE_UNUSED
)
967 if (def_symbol_in_progress
== NULL
)
969 as_warn (_(".tag pseudo-op used outside of .def/.endef ignored."));
970 demand_empty_rest_of_line ();
974 S_SET_NUMBER_AUXILIARY (def_symbol_in_progress
, 1);
975 name_end
= get_symbol_name (&symbol_name
);
977 #ifdef tc_canonicalize_symbol_name
978 symbol_name
= tc_canonicalize_symbol_name (symbol_name
);
981 /* Assume that the symbol referred to by .tag is always defined.
982 This was a bad assumption. I've added find_or_make. xoxorich. */
983 SA_SET_SYM_TAGNDX (def_symbol_in_progress
,
984 tag_find_or_make (symbol_name
));
985 if (SA_GET_SYM_TAGNDX (def_symbol_in_progress
) == 0L)
986 as_warn (_("tag not found for .tag %s"), symbol_name
);
988 SF_SET_TAGGED (def_symbol_in_progress
);
990 (void) restore_line_pointer (name_end
);
991 demand_empty_rest_of_line ();
995 obj_coff_type (int ignore ATTRIBUTE_UNUSED
)
997 if (def_symbol_in_progress
== NULL
)
999 as_warn (_(".type pseudo-op used outside of .def/.endef ignored."));
1000 demand_empty_rest_of_line ();
1004 S_SET_DATA_TYPE (def_symbol_in_progress
, get_absolute_expression ());
1006 if (ISFCN (S_GET_DATA_TYPE (def_symbol_in_progress
)) &&
1007 S_GET_STORAGE_CLASS (def_symbol_in_progress
) != C_TPDEF
)
1008 SF_SET_FUNCTION (def_symbol_in_progress
);
1010 demand_empty_rest_of_line ();
1014 obj_coff_val (int ignore ATTRIBUTE_UNUSED
)
1016 if (def_symbol_in_progress
== NULL
)
1018 as_warn (_(".val pseudo-op used outside of .def/.endef ignored."));
1019 demand_empty_rest_of_line ();
1023 if (is_name_beginner (*input_line_pointer
))
1026 char name_end
= get_symbol_name (&symbol_name
);
1028 #ifdef tc_canonicalize_symbol_name
1029 symbol_name
= tc_canonicalize_symbol_name (symbol_name
);
1031 if (streq (symbol_name
, "."))
1033 /* If the .val is != from the .def (e.g. statics). */
1034 symbol_set_frag (def_symbol_in_progress
, frag_now
);
1035 S_SET_VALUE (def_symbol_in_progress
, (valueT
) frag_now_fix ());
1037 else if (! streq (S_GET_NAME (def_symbol_in_progress
), symbol_name
))
1041 exp
.X_op
= O_symbol
;
1042 exp
.X_add_symbol
= symbol_find_or_make (symbol_name
);
1043 exp
.X_op_symbol
= NULL
;
1044 exp
.X_add_number
= 0;
1045 symbol_set_value_expression (def_symbol_in_progress
, &exp
);
1047 /* If the segment is undefined when the forward reference is
1048 resolved, then copy the segment id from the forward
1050 SF_SET_GET_SEGMENT (def_symbol_in_progress
);
1052 /* FIXME: gcc can generate address expressions here in
1053 unusual cases (search for "obscure" in sdbout.c). We
1054 just ignore the offset here, thus generating incorrect
1055 debugging information. We ignore the rest of the line
1058 /* Otherwise, it is the name of a non debug symbol and its value
1059 will be calculated later. */
1060 (void) restore_line_pointer (name_end
);
1064 S_SET_VALUE (def_symbol_in_progress
, get_absolute_expression ());
1067 demand_empty_rest_of_line ();
1072 /* Return nonzero if name begins with weak alternate symbol prefix. */
1075 weak_is_altname (const char * name
)
1077 return strneq (name
, weak_altprefix
, sizeof (weak_altprefix
) - 1);
1080 /* Return the name of the alternate symbol
1081 name corresponding to a weak symbol's name. */
1084 weak_name2altname (const char * name
)
1088 alt_name
= xmalloc (sizeof (weak_altprefix
) + strlen (name
));
1089 strcpy (alt_name
, weak_altprefix
);
1090 return strcat (alt_name
, name
);
1093 /* Return the name of the weak symbol corresponding to an
1094 alternate symbol. */
1097 weak_altname2name (const char * name
)
1099 gas_assert (weak_is_altname (name
));
1100 return xstrdup (name
+ 6);
1103 /* Make a weak symbol name unique by
1104 appending the name of an external symbol. */
1107 weak_uniquify (const char * name
)
1110 const char * unique
= "";
1113 if (an_external_name
!= NULL
)
1114 unique
= an_external_name
;
1116 gas_assert (weak_is_altname (name
));
1118 ret
= xmalloc (strlen (name
) + strlen (unique
) + 2);
1121 strcat (ret
, unique
);
1126 pecoff_obj_set_weak_hook (symbolS
*symbolP
)
1128 symbolS
*alternateP
;
1130 /* See _Microsoft Portable Executable and Common Object
1131 File Format Specification_, section 5.5.3.
1132 Create a symbol representing the alternate value.
1133 coff_frob_symbol will set the value of this symbol from
1134 the value of the weak symbol itself. */
1135 S_SET_STORAGE_CLASS (symbolP
, C_NT_WEAK
);
1136 S_SET_NUMBER_AUXILIARY (symbolP
, 1);
1137 SA_SET_SYM_FSIZE (symbolP
, IMAGE_WEAK_EXTERN_SEARCH_NOLIBRARY
);
1139 alternateP
= symbol_find_or_make (weak_name2altname (S_GET_NAME (symbolP
)));
1140 S_SET_EXTERNAL (alternateP
);
1141 S_SET_STORAGE_CLASS (alternateP
, C_NT_WEAK
);
1143 SA_SET_SYM_TAGNDX (symbolP
, alternateP
);
1147 pecoff_obj_clear_weak_hook (symbolS
*symbolP
)
1149 symbolS
*alternateP
;
1151 S_SET_STORAGE_CLASS (symbolP
, 0);
1152 SA_SET_SYM_FSIZE (symbolP
, 0);
1154 alternateP
= symbol_find (weak_name2altname (S_GET_NAME (symbolP
)));
1155 S_CLEAR_EXTERNAL (alternateP
);
1160 /* Handle .weak. This is a GNU extension in formats other than PE. */
1163 obj_coff_weak (int ignore ATTRIBUTE_UNUSED
)
1171 c
= get_symbol_name (&name
);
1174 as_warn (_("badly formed .weak directive ignored"));
1175 ignore_rest_of_line ();
1179 symbolP
= symbol_find_or_make (name
);
1180 *input_line_pointer
= c
;
1181 SKIP_WHITESPACE_AFTER_NAME ();
1182 S_SET_WEAK (symbolP
);
1186 input_line_pointer
++;
1188 if (*input_line_pointer
== '\n')
1195 demand_empty_rest_of_line ();
1199 coff_obj_read_begin_hook (void)
1201 /* These had better be the same. Usually 18 bytes. */
1202 know (sizeof (SYMENT
) == sizeof (AUXENT
));
1203 know (SYMESZ
== AUXESZ
);
1207 symbolS
*coff_last_function
;
1209 static symbolS
*coff_last_bf
;
1213 coff_frob_symbol (symbolS
*symp
, int *punt
)
1215 static symbolS
*last_tagP
;
1216 static stack
*block_stack
;
1217 static symbolS
*set_end
;
1218 symbolS
*next_set_end
= NULL
;
1220 if (symp
== &abs_symbol
)
1226 if (current_lineno_sym
)
1227 coff_add_linesym (NULL
);
1230 block_stack
= stack_init (512, sizeof (symbolS
*));
1233 if (S_GET_STORAGE_CLASS (symp
) == C_NT_WEAK
1234 && ! S_IS_WEAK (symp
)
1235 && weak_is_altname (S_GET_NAME (symp
)))
1237 /* This is a weak alternate symbol. All processing of
1238 PECOFFweak symbols is done here, through the alternate. */
1239 symbolS
*weakp
= symbol_find_noref (weak_altname2name
1240 (S_GET_NAME (symp
)), 1);
1243 gas_assert (S_GET_NUMBER_AUXILIARY (weakp
) == 1);
1245 if (! S_IS_WEAK (weakp
))
1247 /* The symbol was turned from weak to strong. Discard altname. */
1251 else if (symbol_equated_p (weakp
))
1253 /* The weak symbol has an alternate specified; symp is unneeded. */
1254 S_SET_STORAGE_CLASS (weakp
, C_NT_WEAK
);
1255 SA_SET_SYM_TAGNDX (weakp
,
1256 symbol_get_value_expression (weakp
)->X_add_symbol
);
1258 S_CLEAR_EXTERNAL (symp
);
1264 /* The weak symbol has been assigned an alternate value.
1265 Copy this value to symp, and set symp as weakp's alternate. */
1266 if (S_GET_STORAGE_CLASS (weakp
) != C_NT_WEAK
)
1268 S_SET_STORAGE_CLASS (symp
, S_GET_STORAGE_CLASS (weakp
));
1269 S_SET_STORAGE_CLASS (weakp
, C_NT_WEAK
);
1272 if (S_IS_DEFINED (weakp
))
1274 /* This is a defined weak symbol. Copy value information
1275 from the weak symbol itself to the alternate symbol. */
1276 symbol_set_value_expression (symp
,
1277 symbol_get_value_expression (weakp
));
1278 symbol_set_frag (symp
, symbol_get_frag (weakp
));
1279 S_SET_SEGMENT (symp
, S_GET_SEGMENT (weakp
));
1283 /* This is an undefined weak symbol.
1284 Define the alternate symbol to zero. */
1285 S_SET_VALUE (symp
, 0);
1286 S_SET_SEGMENT (symp
, absolute_section
);
1289 S_SET_NAME (symp
, weak_uniquify (S_GET_NAME (symp
)));
1290 S_SET_STORAGE_CLASS (symp
, C_EXT
);
1292 S_SET_VALUE (weakp
, 0);
1293 S_SET_SEGMENT (weakp
, undefined_section
);
1297 if (S_IS_WEAK (symp
))
1298 S_SET_STORAGE_CLASS (symp
, C_WEAKEXT
);
1301 if (!S_IS_DEFINED (symp
)
1302 && !S_IS_WEAK (symp
)
1303 && S_GET_STORAGE_CLASS (symp
) != C_STAT
)
1304 S_SET_STORAGE_CLASS (symp
, C_EXT
);
1306 if (!SF_GET_DEBUG (symp
))
1310 if (!SF_GET_LOCAL (symp
)
1311 && !SF_GET_STATICS (symp
)
1312 && S_GET_STORAGE_CLASS (symp
) != C_LABEL
1313 && symbol_constant_p (symp
)
1314 && (real
= symbol_find_noref (S_GET_NAME (symp
), 1))
1315 && S_GET_STORAGE_CLASS (real
) == C_NULL
1318 c_symbol_merge (symp
, real
);
1323 if (!S_IS_DEFINED (symp
) && !SF_GET_LOCAL (symp
))
1325 gas_assert (S_GET_VALUE (symp
) == 0);
1326 if (S_IS_WEAKREFD (symp
))
1329 S_SET_EXTERNAL (symp
);
1331 else if (S_GET_STORAGE_CLASS (symp
) == C_NULL
)
1333 if (S_GET_SEGMENT (symp
) == text_section
1334 && symp
!= seg_info (text_section
)->sym
)
1335 S_SET_STORAGE_CLASS (symp
, C_LABEL
);
1337 S_SET_STORAGE_CLASS (symp
, C_STAT
);
1340 if (SF_GET_PROCESS (symp
))
1342 if (S_GET_STORAGE_CLASS (symp
) == C_BLOCK
)
1344 if (streq (S_GET_NAME (symp
), ".bb"))
1345 stack_push (block_stack
, (char *) &symp
);
1350 begin
= *(symbolS
**) stack_pop (block_stack
);
1352 as_warn (_("mismatched .eb"));
1354 next_set_end
= begin
;
1358 if (coff_last_function
== 0 && SF_GET_FUNCTION (symp
)
1359 && S_IS_DEFINED (symp
))
1361 union internal_auxent
*auxp
;
1363 coff_last_function
= symp
;
1364 if (S_GET_NUMBER_AUXILIARY (symp
) < 1)
1365 S_SET_NUMBER_AUXILIARY (symp
, 1);
1366 auxp
= SYM_AUXENT (symp
);
1367 memset (auxp
->x_sym
.x_fcnary
.x_ary
.x_dimen
, 0,
1368 sizeof (auxp
->x_sym
.x_fcnary
.x_ary
.x_dimen
));
1371 if (S_GET_STORAGE_CLASS (symp
) == C_EFCN
1372 && S_IS_DEFINED (symp
))
1374 if (coff_last_function
== 0)
1375 as_fatal (_("C_EFCN symbol for %s out of scope"),
1377 SA_SET_SYM_FSIZE (coff_last_function
,
1378 (long) (S_GET_VALUE (symp
)
1379 - S_GET_VALUE (coff_last_function
)));
1380 next_set_end
= coff_last_function
;
1381 coff_last_function
= 0;
1385 if (S_IS_EXTERNAL (symp
))
1386 S_SET_STORAGE_CLASS (symp
, C_EXT
);
1387 else if (SF_GET_LOCAL (symp
))
1390 if (SF_GET_FUNCTION (symp
))
1391 symbol_get_bfdsym (symp
)->flags
|= BSF_FUNCTION
;
1394 /* Double check weak symbols. */
1395 if (S_IS_WEAK (symp
) && S_IS_COMMON (symp
))
1396 as_bad (_("Symbol `%s' can not be both weak and common"),
1399 if (SF_GET_TAG (symp
))
1401 else if (S_GET_STORAGE_CLASS (symp
) == C_EOS
)
1402 next_set_end
= last_tagP
;
1405 /* This is pretty horrible, but we have to set *punt correctly in
1406 order to call SA_SET_SYM_ENDNDX correctly. */
1407 if (! symbol_used_in_reloc_p (symp
)
1408 && ((symbol_get_bfdsym (symp
)->flags
& BSF_SECTION_SYM
) != 0
1409 || (! (S_IS_EXTERNAL (symp
) || S_IS_WEAK (symp
))
1410 && ! symbol_get_tc (symp
)->output
1411 && S_GET_STORAGE_CLASS (symp
) != C_FILE
)))
1415 if (set_end
!= (symbolS
*) NULL
1417 && ((symbol_get_bfdsym (symp
)->flags
& BSF_NOT_AT_END
) != 0
1418 || (S_IS_DEFINED (symp
)
1419 && ! S_IS_COMMON (symp
)
1420 && (! S_IS_EXTERNAL (symp
) || SF_GET_FUNCTION (symp
)))))
1422 SA_SET_SYM_ENDNDX (set_end
, symp
);
1426 if (next_set_end
!= NULL
)
1428 if (set_end
!= NULL
)
1429 as_warn (_("Warning: internal error: forgetting to set endndx of %s"),
1430 S_GET_NAME (set_end
));
1431 set_end
= next_set_end
;
1436 && S_GET_STORAGE_CLASS (symp
) == C_FCN
1437 && streq (S_GET_NAME (symp
), ".bf"))
1439 if (coff_last_bf
!= NULL
)
1440 SA_SET_SYM_ENDNDX (coff_last_bf
, symp
);
1441 coff_last_bf
= symp
;
1444 if (coffsymbol (symbol_get_bfdsym (symp
))->lineno
)
1447 struct line_no
*lptr
;
1450 lptr
= (struct line_no
*) coffsymbol (symbol_get_bfdsym (symp
))->lineno
;
1451 for (i
= 0; lptr
; lptr
= lptr
->next
)
1453 lptr
= (struct line_no
*) coffsymbol (symbol_get_bfdsym (symp
))->lineno
;
1455 /* We need i entries for line numbers, plus 1 for the first
1456 entry which BFD will override, plus 1 for the last zero
1457 entry (a marker for BFD). */
1458 l
= xmalloc ((i
+ 2) * sizeof (* l
));
1459 coffsymbol (symbol_get_bfdsym (symp
))->lineno
= l
;
1460 l
[i
+ 1].line_number
= 0;
1461 l
[i
+ 1].u
.sym
= NULL
;
1465 lptr
->l
.u
.offset
+= lptr
->frag
->fr_address
/ OCTETS_PER_BYTE
;
1473 coff_adjust_section_syms (bfd
*abfd ATTRIBUTE_UNUSED
,
1475 void * x ATTRIBUTE_UNUSED
)
1478 segment_info_type
*seginfo
= seg_info (sec
);
1479 int nlnno
, nrelocs
= 0;
1481 /* RS/6000 gas creates a .debug section manually in ppc_frob_file in
1482 tc-ppc.c. Do not get confused by it. */
1483 if (seginfo
== NULL
)
1486 if (streq (sec
->name
, ".text"))
1487 nlnno
= coff_n_line_nos
;
1491 /* @@ Hope that none of the fixups expand to more than one reloc
1493 fixS
*fixp
= seginfo
->fix_root
;
1496 if (! fixp
->fx_done
)
1498 fixp
= fixp
->fx_next
;
1501 if (bfd_get_section_size (sec
) == 0
1504 && sec
!= text_section
1505 && sec
!= data_section
1506 && sec
!= bss_section
)
1509 secsym
= section_symbol (sec
);
1510 /* This is an estimate; we'll plug in the real value using
1511 SET_SECTION_RELOCS later */
1512 SA_SET_SCN_NRELOC (secsym
, nrelocs
);
1513 SA_SET_SCN_NLINNO (secsym
, nlnno
);
1517 coff_frob_file_after_relocs (void)
1519 bfd_map_over_sections (stdoutput
, coff_adjust_section_syms
, NULL
);
1522 /* Implement the .section pseudo op:
1523 .section name {, "flags"}
1525 | +--- optional flags: 'b' for bss
1527 +-- section name 'l' for lib
1531 'd' (apparently m88k for data)
1534 'r' for read-only data
1535 's' for shared data (PE)
1537 '0' - '9' for power-of-two alignment (GNU extension).
1538 But if the argument is not a quoted string, treat it as a
1541 Note the 'a' flag is silently ignored. This allows the same
1542 .section directive to be parsed in both ELF and COFF formats. */
1545 obj_coff_section (int ignore ATTRIBUTE_UNUSED
)
1547 /* Strip out the section name. */
1553 flagword flags
, oldflags
;
1564 c
= get_symbol_name (§ion_name
);
1565 name
= xmalloc (input_line_pointer
- section_name
+ 1);
1566 strcpy (name
, section_name
);
1567 *input_line_pointer
= c
;
1568 SKIP_WHITESPACE_AFTER_NAME ();
1571 flags
= SEC_NO_FLAGS
;
1573 if (*input_line_pointer
== ',')
1575 ++input_line_pointer
;
1577 if (*input_line_pointer
!= '"')
1578 exp
= get_absolute_expression ();
1582 int readonly_removed
= 0;
1583 int load_removed
= 0;
1585 while (attr
= *++input_line_pointer
,
1587 && ! is_end_of_line
[attr
])
1591 alignment
= attr
- '0';
1597 /* Exclude section from linking. */
1598 flags
|= SEC_EXCLUDE
;
1602 /* Uninitialised data section. */
1608 /* Section not loaded. */
1610 flags
|= SEC_NEVER_LOAD
;
1615 /* Shared section. */
1616 flags
|= SEC_COFF_SHARED
;
1623 flags
&=~ SEC_READONLY
;
1627 /* Writable section. */
1628 flags
&=~ SEC_READONLY
;
1629 readonly_removed
= 1;
1633 /* Ignore. Here for compatibility with ELF. */
1636 case 'r': /* Read-only section. Implies a data section. */
1637 readonly_removed
= 0;
1639 case 'x': /* Executable section. */
1640 /* If we are setting the 'x' attribute or if the 'r'
1641 attribute is being used to restore the readonly status
1642 of a code section (eg "wxr") then set the SEC_CODE flag,
1643 otherwise set the SEC_DATA flag. */
1644 flags
|= (attr
== 'x' || (flags
& SEC_CODE
) ? SEC_CODE
: SEC_DATA
);
1647 /* Note - the READONLY flag is set here, even for the 'x'
1648 attribute in order to be compatible with the MSVC
1650 if (! readonly_removed
)
1651 flags
|= SEC_READONLY
;
1655 flags
|= SEC_COFF_NOREAD
| SEC_READONLY
;
1658 case 'i': /* STYP_INFO */
1659 case 'l': /* STYP_LIB */
1660 case 'o': /* STYP_OVER */
1661 as_warn (_("unsupported section attribute '%c'"), attr
);
1665 as_warn (_("unknown section attribute '%c'"), attr
);
1670 ++input_line_pointer
;
1674 sec
= subseg_new (name
, (subsegT
) exp
);
1677 sec
->alignment_power
= alignment
;
1679 oldflags
= bfd_get_section_flags (stdoutput
, sec
);
1680 if (oldflags
== SEC_NO_FLAGS
)
1682 /* Set section flags for a new section just created by subseg_new.
1683 Provide a default if no flags were parsed. */
1684 if (flags
== SEC_NO_FLAGS
)
1685 flags
= TC_COFF_SECTION_DEFAULT_ATTRIBUTES
;
1687 #ifdef COFF_LONG_SECTION_NAMES
1688 /* Add SEC_LINK_ONCE and SEC_LINK_DUPLICATES_DISCARD to .gnu.linkonce
1689 sections so adjust_reloc_syms in write.c will correctly handle
1690 relocs which refer to non-local symbols in these sections. */
1691 if (strneq (name
, ".gnu.linkonce", sizeof (".gnu.linkonce") - 1))
1692 flags
|= SEC_LINK_ONCE
| SEC_LINK_DUPLICATES_DISCARD
;
1695 if (! bfd_set_section_flags (stdoutput
, sec
, flags
))
1696 as_warn (_("error setting flags for \"%s\": %s"),
1697 bfd_section_name (stdoutput
, sec
),
1698 bfd_errmsg (bfd_get_error ()));
1700 else if (flags
!= SEC_NO_FLAGS
)
1702 /* This section's attributes have already been set. Warn if the
1703 attributes don't match. */
1704 flagword matchflags
= (SEC_ALLOC
| SEC_LOAD
| SEC_READONLY
| SEC_CODE
1705 | SEC_DATA
| SEC_COFF_SHARED
| SEC_NEVER_LOAD
1707 if ((flags
^ oldflags
) & matchflags
)
1708 as_warn (_("Ignoring changed section attributes for %s"), name
);
1711 demand_empty_rest_of_line ();
1715 coff_adjust_symtab (void)
1717 if (symbol_rootP
== NULL
1718 || S_GET_STORAGE_CLASS (symbol_rootP
) != C_FILE
)
1719 c_dot_file_symbol ("fake", 0);
1723 coff_frob_section (segT sec
)
1730 /* The COFF back end in BFD requires that all section sizes be
1731 rounded up to multiples of the corresponding section alignments,
1732 supposedly because standard COFF has no other way of encoding alignment
1733 for sections. If your COFF flavor has a different way of encoding
1734 section alignment, then skip this step, as TICOFF does. */
1735 bfd_vma size
= bfd_get_section_size (sec
);
1736 #if !defined(TICOFF)
1737 bfd_vma align_power
= (bfd_vma
) sec
->alignment_power
+ OCTETS_PER_BYTE_POWER
;
1738 bfd_vma mask
= ((bfd_vma
) 1 << align_power
) - 1;
1745 new_size
= (size
+ mask
) & ~mask
;
1746 bfd_set_section_size (stdoutput
, sec
, new_size
);
1748 /* If the size had to be rounded up, add some padding in
1749 the last non-empty frag. */
1750 fragp
= seg_info (sec
)->frchainP
->frch_root
;
1751 last
= seg_info (sec
)->frchainP
->frch_last
;
1752 while (fragp
->fr_next
!= last
)
1753 fragp
= fragp
->fr_next
;
1754 last
->fr_address
= size
;
1755 fragp
->fr_offset
+= new_size
- size
;
1759 /* If the section size is non-zero, the section symbol needs an aux
1760 entry associated with it, indicating the size. We don't know
1761 all the values yet; coff_frob_symbol will fill them in later. */
1764 || sec
== text_section
1765 || sec
== data_section
1766 || sec
== bss_section
)
1769 symbolS
*secsym
= section_symbol (sec
);
1770 unsigned char sclass
= C_STAT
;
1773 if (bfd_get_section_flags (stdoutput
, sec
) & SEC_DEBUGGING
)
1776 S_SET_STORAGE_CLASS (secsym
, sclass
);
1777 S_SET_NUMBER_AUXILIARY (secsym
, 1);
1778 SF_SET_STATICS (secsym
);
1779 SA_SET_SCN_SCNLEN (secsym
, size
);
1781 /* FIXME: These should be in a "stabs.h" file, or maybe as.h. */
1782 #ifndef STAB_SECTION_NAME
1783 #define STAB_SECTION_NAME ".stab"
1785 #ifndef STAB_STRING_SECTION_NAME
1786 #define STAB_STRING_SECTION_NAME ".stabstr"
1788 if (! streq (STAB_STRING_SECTION_NAME
, sec
->name
))
1792 sec
= subseg_get (STAB_SECTION_NAME
, 0);
1793 /* size is already rounded up, since other section will be listed first */
1794 size
= bfd_get_section_size (strsec
);
1796 n_entries
= bfd_get_section_size (sec
) / 12 - 1;
1798 /* Find first non-empty frag. It should be large enough. */
1799 fragp
= seg_info (sec
)->frchainP
->frch_root
;
1800 while (fragp
&& fragp
->fr_fix
== 0)
1801 fragp
= fragp
->fr_next
;
1802 gas_assert (fragp
!= 0 && fragp
->fr_fix
>= 12);
1804 /* Store the values. */
1805 p
= fragp
->fr_literal
;
1806 bfd_h_put_16 (stdoutput
, n_entries
, (bfd_byte
*) p
+ 6);
1807 bfd_h_put_32 (stdoutput
, size
, (bfd_byte
*) p
+ 8);
1811 obj_coff_init_stab_section (segT seg
)
1816 unsigned int stroff
;
1818 /* Make space for this first symbol. */
1822 file
= as_where ((unsigned int *) NULL
);
1823 stabstr_name
= xmalloc (strlen (seg
->name
) + 4);
1824 strcpy (stabstr_name
, seg
->name
);
1825 strcat (stabstr_name
, "str");
1826 stroff
= get_stab_string_offset (file
, stabstr_name
);
1828 md_number_to_chars (p
, stroff
, 4);
1832 const char * s_get_name (symbolS
*);
1835 s_get_name (symbolS
*s
)
1837 return ((s
== NULL
) ? "(NULL)" : S_GET_NAME (s
));
1840 void symbol_dump (void);
1847 for (symbolP
= symbol_rootP
; symbolP
; symbolP
= symbol_next (symbolP
))
1848 printf (_("0x%lx: \"%s\" type = %ld, class = %d, segment = %d\n"),
1849 (unsigned long) symbolP
,
1850 S_GET_NAME (symbolP
),
1851 (long) S_GET_DATA_TYPE (symbolP
),
1852 S_GET_STORAGE_CLASS (symbolP
),
1853 (int) S_GET_SEGMENT (symbolP
));
1858 const pseudo_typeS coff_pseudo_table
[] =
1860 {"ABORT", s_abort
, 0},
1861 {"appline", obj_coff_ln
, 1},
1862 /* We accept the .bss directive for backward compatibility with
1863 earlier versions of gas. */
1864 {"bss", obj_coff_bss
, 0},
1866 /* PE provides an enhanced version of .comm with alignment. */
1867 {"comm", obj_coff_comm
, 0},
1869 {"def", obj_coff_def
, 0},
1870 {"dim", obj_coff_dim
, 0},
1871 {"endef", obj_coff_endef
, 0},
1872 {"ident", obj_coff_ident
, 0},
1873 {"line", obj_coff_line
, 0},
1874 {"ln", obj_coff_ln
, 0},
1875 {"scl", obj_coff_scl
, 0},
1876 {"sect", obj_coff_section
, 0},
1877 {"sect.s", obj_coff_section
, 0},
1878 {"section", obj_coff_section
, 0},
1879 {"section.s", obj_coff_section
, 0},
1880 /* FIXME: We ignore the MRI short attribute. */
1881 {"size", obj_coff_size
, 0},
1882 {"tag", obj_coff_tag
, 0},
1883 {"type", obj_coff_type
, 0},
1884 {"val", obj_coff_val
, 0},
1885 {"version", s_ignore
, 0},
1886 {"loc", obj_coff_loc
, 0},
1887 {"optim", s_ignore
, 0}, /* For sun386i cc (?) */
1888 {"weak", obj_coff_weak
, 0},
1889 #if defined TC_TIC4X
1890 /* The tic4x uses sdef instead of def. */
1891 {"sdef", obj_coff_def
, 0},
1893 #if defined(SEH_CMDS)
1900 /* Support for a COFF emulation. */
1903 coff_pop_insert (void)
1905 pop_insert (coff_pseudo_table
);
1909 coff_separate_stab_sections (void)
1914 const struct format_ops coff_format_ops
=
1916 bfd_target_coff_flavour
,
1917 0, /* dfl_leading_underscore */
1918 1, /* emit_section_symbols */
1923 0, /* frob_file_before_adjust */
1924 0, /* frob_file_before_fix */
1925 coff_frob_file_after_relocs
,
1928 0, /* s_get_align */
1929 0, /* s_set_align */
1930 0, /* s_get_other */
1931 0, /* s_set_other */
1936 0, /* copy_symbol_attributes */
1937 0, /* generate_asm_lineno */
1938 0, /* process_stab */
1939 coff_separate_stab_sections
,
1940 obj_coff_init_stab_section
,
1941 0, /* sec_sym_ok_for_reloc */
1943 0, /* ecoff_set_ext */
1944 coff_obj_read_begin_hook
,
1945 coff_obj_symbol_new_hook
,
1946 coff_obj_symbol_clone_hook
,