1 /* coff object file format
2 Copyright (C) 1989, 90, 91, 92, 93, 94, 95, 96, 97, 98, 1999
3 Free Software Foundation, Inc.
5 This file is part of GAS.
7 GAS is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 2, or (at your option)
12 GAS is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with GAS; see the file COPYING. If not, write to the Free
19 Software Foundation, 59 Temple Place - Suite 330, Boston, MA
22 #define OBJ_HEADER "obj-coff.h"
28 /* I think this is probably always correct. */
29 #ifndef KEEP_RELOC_INFO
30 #define KEEP_RELOC_INFO
33 static void obj_coff_bss PARAMS ((int));
34 const char *s_get_name PARAMS ((symbolS * s));
35 static symbolS *def_symbol_in_progress;
41 unsigned long chunk_size;
42 unsigned long element_size;
45 unsigned long pointer;
50 stack_init (chunk_size, element_size)
51 unsigned long chunk_size;
52 unsigned long element_size;
56 st = (stack *) malloc (sizeof (stack));
59 st->data = malloc (chunk_size);
66 st->size = chunk_size;
67 st->chunk_size = chunk_size;
68 st->element_size = element_size;
73 /* Not currently used. */
84 stack_push (st, element)
88 if (st->pointer + st->element_size >= st->size)
90 st->size += st->chunk_size;
91 if ((st->data = xrealloc (st->data, st->size)) == (char *) 0)
94 memcpy (st->data + st->pointer, element, st->element_size);
95 st->pointer += st->element_size;
96 return st->data + st->pointer;
103 if (st->pointer < st->element_size)
108 st->pointer -= st->element_size;
109 return st->data + st->pointer;
113 * Maintain a list of the tagnames of the structres.
116 static struct hash_control *tag_hash;
121 tag_hash = hash_new ();
125 tag_insert (name, symbolP)
129 const char *error_string;
131 if ((error_string = hash_jam (tag_hash, name, (char *) symbolP)))
133 as_fatal (_("Inserting \"%s\" into structure table failed: %s"),
142 #ifdef STRIP_UNDERSCORE
145 #endif /* STRIP_UNDERSCORE */
146 return (symbolS *) hash_find (tag_hash, name);
150 tag_find_or_make (name)
155 if ((symbolP = tag_find (name)) == NULL)
157 symbolP = symbol_new (name, undefined_section,
158 0, &zero_address_frag);
160 tag_insert (S_GET_NAME (symbolP), symbolP);
162 symbol_table_insert (symbolP);
169 /* We accept the .bss directive to set the section for backward
170 compatibility with earlier versions of gas. */
173 obj_coff_bss (ignore)
174 int ignore ATTRIBUTE_UNUSED;
176 if (*input_line_pointer == '\n')
177 subseg_new (".bss", get_absolute_expression ());
182 /* Handle .weak. This is a GNU extension. */
185 obj_coff_weak (ignore)
186 int ignore ATTRIBUTE_UNUSED;
194 name = input_line_pointer;
195 c = get_symbol_end ();
196 symbolP = symbol_find_or_make (name);
197 *input_line_pointer = c;
201 S_SET_WEAK (symbolP);
205 S_SET_STORAGE_CLASS (symbolP, C_NT_WEAK);
207 S_SET_STORAGE_CLASS (symbolP, C_WEAKEXT);
212 input_line_pointer++;
214 if (*input_line_pointer == '\n')
220 demand_empty_rest_of_line ();
225 static void SA_SET_SYM_TAGNDX PARAMS ((symbolS *, symbolS *));
227 #define GET_FILENAME_STRING(X) \
228 ((char*)(&((X)->sy_symbol.ost_auxent->x_file.x_n.x_offset))[1])
232 fetch_coff_debug_section ()
234 static segT debug_section;
238 s = bfd_make_debug_symbol (stdoutput, (char *) 0, 0);
240 debug_section = s->section;
242 return debug_section;
246 SA_SET_SYM_ENDNDX (sym, val)
250 combined_entry_type *entry, *p;
252 entry = &coffsymbol (symbol_get_bfdsym (sym))->native[1];
253 p = coffsymbol (symbol_get_bfdsym (val))->native;
254 entry->u.auxent.x_sym.x_fcnary.x_fcn.x_endndx.p = p;
259 SA_SET_SYM_TAGNDX (sym, val)
263 combined_entry_type *entry, *p;
265 entry = &coffsymbol (symbol_get_bfdsym (sym))->native[1];
266 p = coffsymbol (symbol_get_bfdsym (val))->native;
267 entry->u.auxent.x_sym.x_tagndx.p = p;
272 S_GET_DATA_TYPE (sym)
275 return coffsymbol (symbol_get_bfdsym (sym))->native->u.syment.n_type;
279 S_SET_DATA_TYPE (sym, val)
283 coffsymbol (symbol_get_bfdsym (sym))->native->u.syment.n_type = val;
288 S_GET_STORAGE_CLASS (sym)
291 return coffsymbol (symbol_get_bfdsym (sym))->native->u.syment.n_sclass;
295 S_SET_STORAGE_CLASS (sym, val)
299 coffsymbol (symbol_get_bfdsym (sym))->native->u.syment.n_sclass = val;
303 /* Merge a debug symbol containing debug information into a normal symbol. */
306 c_symbol_merge (debug, normal)
310 S_SET_DATA_TYPE (normal, S_GET_DATA_TYPE (debug));
311 S_SET_STORAGE_CLASS (normal, S_GET_STORAGE_CLASS (debug));
313 if (S_GET_NUMBER_AUXILIARY (debug) > S_GET_NUMBER_AUXILIARY (normal))
315 /* take the most we have */
316 S_SET_NUMBER_AUXILIARY (normal, S_GET_NUMBER_AUXILIARY (debug));
319 if (S_GET_NUMBER_AUXILIARY (debug) > 0)
321 /* Move all the auxiliary information. */
322 memcpy (SYM_AUXINFO (normal), SYM_AUXINFO (debug),
323 (S_GET_NUMBER_AUXILIARY (debug)
324 * sizeof (*SYM_AUXINFO (debug))));
327 /* Move the debug flags. */
328 SF_SET_DEBUG_FIELD (normal, SF_GET_DEBUG_FIELD (debug));
332 c_dot_file_symbol (filename)
337 symbolP = symbol_new (filename, bfd_abs_section_ptr, 0, &zero_address_frag);
339 S_SET_STORAGE_CLASS (symbolP, C_FILE);
340 S_SET_NUMBER_AUXILIARY (symbolP, 1);
342 symbol_get_bfdsym (symbolP)->flags = BSF_DEBUGGING;
349 listing_source_file (filename);
354 /* Make sure that the symbol is first on the symbol chain */
355 if (symbol_rootP != symbolP)
357 symbol_remove (symbolP, &symbol_rootP, &symbol_lastP);
358 symbol_insert (symbolP, symbol_rootP, &symbol_rootP, &symbol_lastP);
359 } /* if not first on the list */
362 /* Line number handling */
365 struct line_no *next;
372 /* Symbol of last function, which we should hang line#s off of. */
373 static symbolS *line_fsym;
375 #define in_function() (line_fsym != 0)
376 #define clear_function() (line_fsym = 0)
377 #define set_function(F) (line_fsym = (F), coff_add_linesym (F))
381 coff_obj_symbol_new_hook (symbolP)
384 long sz = (OBJ_COFF_MAX_AUXENTRIES + 1) * sizeof (combined_entry_type);
385 char * s = (char *) xmalloc (sz);
388 coffsymbol (symbol_get_bfdsym (symbolP))->native = (combined_entry_type *) s;
390 S_SET_DATA_TYPE (symbolP, T_NULL);
391 S_SET_STORAGE_CLASS (symbolP, 0);
392 S_SET_NUMBER_AUXILIARY (symbolP, 0);
394 if (S_IS_STRING (symbolP))
395 SF_SET_STRING (symbolP);
397 if (S_IS_LOCAL (symbolP))
398 SF_SET_LOCAL (symbolP);
403 * Handle .ln directives.
406 static symbolS *current_lineno_sym;
407 static struct line_no *line_nos;
408 /* @@ Blindly assume all .ln directives will be in the .text section... */
412 add_lineno (frag, offset, num)
417 struct line_no *new_line =
418 (struct line_no *) xmalloc (sizeof (struct line_no));
419 if (!current_lineno_sym)
423 new_line->next = line_nos;
424 new_line->frag = frag;
425 new_line->l.line_number = num;
426 new_line->l.u.offset = offset;
432 coff_add_linesym (sym)
437 coffsymbol (symbol_get_bfdsym (current_lineno_sym))->lineno =
442 current_lineno_sym = sym;
446 obj_coff_ln (appline)
451 if (! appline && def_symbol_in_progress != NULL)
453 as_warn (_(".ln pseudo-op inside .def/.endef: ignored."));
454 demand_empty_rest_of_line ();
458 l = get_absolute_expression ();
461 add_lineno (frag_now, frag_now_fix (), l);
465 new_logical_line ((char *) NULL, l - 1);
474 l += coff_line_base - 1;
475 listing_source_line (l);
480 demand_empty_rest_of_line ();
486 * Handle .def directives.
488 * One might ask : why can't we symbol_new if the symbol does not
489 * already exist and fill it with debug information. Because of
490 * the C_EFCN special symbol. It would clobber the value of the
491 * function symbol before we have a chance to notice that it is
492 * a C_EFCN. And a second reason is that the code is more clear this
493 * way. (at least I think it is :-).
497 #define SKIP_SEMI_COLON() while (*input_line_pointer++ != ';')
498 #define SKIP_WHITESPACES() while (*input_line_pointer == ' ' || \
499 *input_line_pointer == '\t') \
500 input_line_pointer++;
506 char name_end; /* Char after the end of name */
507 char *symbol_name; /* Name of the debug symbol */
508 char *symbol_name_copy; /* Temporary copy of the name */
509 unsigned int symbol_name_length;
511 if (def_symbol_in_progress != NULL)
513 as_warn (_(".def pseudo-op used inside of .def/.endef: ignored."));
514 demand_empty_rest_of_line ();
516 } /* if not inside .def/.endef */
520 symbol_name = input_line_pointer;
521 #ifdef STRIP_UNDERSCORE
522 if (symbol_name[0] == '_' && symbol_name[1] != 0)
524 #endif /* STRIP_UNDERSCORE */
526 name_end = get_symbol_end ();
527 symbol_name_length = strlen (symbol_name);
528 symbol_name_copy = xmalloc (symbol_name_length + 1);
529 strcpy (symbol_name_copy, symbol_name);
530 #ifdef tc_canonicalize_symbol_name
531 symbol_name_copy = tc_canonicalize_symbol_name (symbol_name_copy);
534 /* Initialize the new symbol */
535 def_symbol_in_progress = symbol_make (symbol_name_copy);
536 symbol_set_frag (def_symbol_in_progress, &zero_address_frag);
537 S_SET_VALUE (def_symbol_in_progress, 0);
539 if (S_IS_STRING (def_symbol_in_progress))
540 SF_SET_STRING (def_symbol_in_progress);
542 *input_line_pointer = name_end;
544 demand_empty_rest_of_line ();
547 unsigned int dim_index;
550 obj_coff_endef (ignore)
555 /* DIM BUG FIX sac@cygnus.com */
557 if (def_symbol_in_progress == NULL)
559 as_warn (_(".endef pseudo-op used outside of .def/.endef: ignored."));
560 demand_empty_rest_of_line ();
562 } /* if not inside .def/.endef */
564 /* Set the section number according to storage class. */
565 switch (S_GET_STORAGE_CLASS (def_symbol_in_progress))
570 SF_SET_TAG (def_symbol_in_progress);
571 /* intentional fallthrough */
574 SF_SET_DEBUG (def_symbol_in_progress);
575 S_SET_SEGMENT (def_symbol_in_progress, fetch_coff_debug_section ());
579 SF_SET_LOCAL (def_symbol_in_progress); /* Do not emit this symbol. */
580 /* intentional fallthrough */
582 SF_SET_PROCESS (def_symbol_in_progress); /* Will need processing before writing */
583 /* intentional fallthrough */
587 S_SET_SEGMENT (def_symbol_in_progress, text_section);
589 name = S_GET_NAME (def_symbol_in_progress);
590 if (name[1] == 'b' && name[2] == 'f')
592 if (! in_function ())
593 as_warn (_("`%s' symbol without preceding function"), name);
594 /* SA_SET_SYM_LNNO (def_symbol_in_progress, 12345);*/
595 /* Will need relocating */
596 SF_SET_PROCESS (def_symbol_in_progress);
604 #endif /* C_AUTOARG */
610 SF_SET_DEBUG (def_symbol_in_progress);
611 S_SET_SEGMENT (def_symbol_in_progress, absolute_section);
618 S_SET_SEGMENT (def_symbol_in_progress, absolute_section);
628 /* Valid but set somewhere else (s_comm, s_lcomm, colon) */
635 as_warn (_("unexpected storage class %d"),
636 S_GET_STORAGE_CLASS (def_symbol_in_progress));
638 } /* switch on storage class */
640 /* Now that we have built a debug symbol, try to find if we should
641 merge with an existing symbol or not. If a symbol is C_EFCN or
642 SEG_ABSOLUTE or untagged SEG_DEBUG it never merges. */
644 /* Two cases for functions. Either debug followed by definition or
645 definition followed by debug. For definition first, we will
646 merge the debug symbol into the definition. For debug first, the
647 lineno entry MUST point to the definition function or else it
648 will point off into space when obj_crawl_symbol_chain() merges
649 the debug symbol into the real symbol. Therefor, let's presume
650 the debug symbol is a real function reference. */
652 /* FIXME-SOON If for some reason the definition label/symbol is
653 never seen, this will probably leave an undefined symbol at link
656 if (S_GET_STORAGE_CLASS (def_symbol_in_progress) == C_EFCN
657 || (!strcmp (bfd_get_section_name (stdoutput,
658 S_GET_SEGMENT (def_symbol_in_progress)),
660 && !SF_GET_TAG (def_symbol_in_progress))
661 || S_GET_SEGMENT (def_symbol_in_progress) == absolute_section
662 || (symbolP = symbol_find_base (S_GET_NAME (def_symbol_in_progress), DO_NOT_STRIP)) == NULL)
664 if (def_symbol_in_progress != symbol_lastP)
665 symbol_append (def_symbol_in_progress, symbol_lastP, &symbol_rootP,
670 /* This symbol already exists, merge the newly created symbol
671 into the old one. This is not mandatory. The linker can
672 handle duplicate symbols correctly. But I guess that it save
673 a *lot* of space if the assembly file defines a lot of
676 /* The debug entry (def_symbol_in_progress) is merged into the
677 previous definition. */
679 c_symbol_merge (def_symbol_in_progress, symbolP);
680 symbol_remove (def_symbol_in_progress, &symbol_rootP, &symbol_lastP);
682 def_symbol_in_progress = symbolP;
684 if (SF_GET_FUNCTION (def_symbol_in_progress)
685 || SF_GET_TAG (def_symbol_in_progress)
686 || S_GET_STORAGE_CLASS (def_symbol_in_progress) == C_STAT)
688 /* For functions, and tags, and static symbols, the symbol
689 *must* be where the debug symbol appears. Move the
690 existing symbol to the current place. */
691 /* If it already is at the end of the symbol list, do nothing */
692 if (def_symbol_in_progress != symbol_lastP)
694 symbol_remove (def_symbol_in_progress, &symbol_rootP, &symbol_lastP);
695 symbol_append (def_symbol_in_progress, symbol_lastP, &symbol_rootP, &symbol_lastP);
700 if (SF_GET_TAG (def_symbol_in_progress))
704 oldtag = symbol_find_base (S_GET_NAME (def_symbol_in_progress),
706 if (oldtag == NULL || ! SF_GET_TAG (oldtag))
707 tag_insert (S_GET_NAME (def_symbol_in_progress),
708 def_symbol_in_progress);
711 if (SF_GET_FUNCTION (def_symbol_in_progress))
713 know (sizeof (def_symbol_in_progress) <= sizeof (long));
714 set_function (def_symbol_in_progress);
715 SF_SET_PROCESS (def_symbol_in_progress);
719 /* That is, if this is the first time we've seen the
721 symbol_table_insert (def_symbol_in_progress);
722 } /* definition follows debug */
723 } /* Create the line number entry pointing to the function being defined */
725 def_symbol_in_progress = NULL;
726 demand_empty_rest_of_line ();
730 obj_coff_dim (ignore)
735 if (def_symbol_in_progress == NULL)
737 as_warn (_(".dim pseudo-op used outside of .def/.endef: ignored."));
738 demand_empty_rest_of_line ();
740 } /* if not inside .def/.endef */
742 S_SET_NUMBER_AUXILIARY (def_symbol_in_progress, 1);
744 for (dim_index = 0; dim_index < DIMNUM; dim_index++)
747 SA_SET_SYM_DIMEN (def_symbol_in_progress, dim_index,
748 get_absolute_expression ());
750 switch (*input_line_pointer)
753 input_line_pointer++;
757 as_warn (_("badly formed .dim directive ignored"));
758 /* intentional fallthrough */
766 demand_empty_rest_of_line ();
770 obj_coff_line (ignore)
775 if (def_symbol_in_progress == NULL)
777 /* Probably stabs-style line? */
782 this_base = get_absolute_expression ();
783 if (!strcmp (".bf", S_GET_NAME (def_symbol_in_progress)))
784 coff_line_base = this_base;
786 S_SET_NUMBER_AUXILIARY (def_symbol_in_progress, 1);
787 SA_SET_SYM_LNNO (def_symbol_in_progress, coff_line_base);
789 demand_empty_rest_of_line ();
792 if (strcmp (".bf", S_GET_NAME (def_symbol_in_progress)) == 0)
797 listing_source_line ((unsigned int) coff_line_base);
803 obj_coff_size (ignore)
806 if (def_symbol_in_progress == NULL)
808 as_warn (_(".size pseudo-op used outside of .def/.endef ignored."));
809 demand_empty_rest_of_line ();
811 } /* if not inside .def/.endef */
813 S_SET_NUMBER_AUXILIARY (def_symbol_in_progress, 1);
814 SA_SET_SYM_SIZE (def_symbol_in_progress, get_absolute_expression ());
815 demand_empty_rest_of_line ();
819 obj_coff_scl (ignore)
822 if (def_symbol_in_progress == NULL)
824 as_warn (_(".scl pseudo-op used outside of .def/.endef ignored."));
825 demand_empty_rest_of_line ();
827 } /* if not inside .def/.endef */
829 S_SET_STORAGE_CLASS (def_symbol_in_progress, get_absolute_expression ());
830 demand_empty_rest_of_line ();
834 obj_coff_tag (ignore)
840 if (def_symbol_in_progress == NULL)
842 as_warn (_(".tag pseudo-op used outside of .def/.endef ignored."));
843 demand_empty_rest_of_line ();
847 S_SET_NUMBER_AUXILIARY (def_symbol_in_progress, 1);
848 symbol_name = input_line_pointer;
849 name_end = get_symbol_end ();
851 #ifdef tc_canonicalize_symbol_name
852 symbol_name = tc_canonicalize_symbol_name (symbol_name);
855 /* Assume that the symbol referred to by .tag is always defined.
856 This was a bad assumption. I've added find_or_make. xoxorich. */
857 SA_SET_SYM_TAGNDX (def_symbol_in_progress,
858 tag_find_or_make (symbol_name));
859 if (SA_GET_SYM_TAGNDX (def_symbol_in_progress) == 0L)
861 as_warn (_("tag not found for .tag %s"), symbol_name);
864 SF_SET_TAGGED (def_symbol_in_progress);
865 *input_line_pointer = name_end;
867 demand_empty_rest_of_line ();
871 obj_coff_type (ignore)
874 if (def_symbol_in_progress == NULL)
876 as_warn (_(".type pseudo-op used outside of .def/.endef ignored."));
877 demand_empty_rest_of_line ();
879 } /* if not inside .def/.endef */
881 S_SET_DATA_TYPE (def_symbol_in_progress, get_absolute_expression ());
883 if (ISFCN (S_GET_DATA_TYPE (def_symbol_in_progress)) &&
884 S_GET_STORAGE_CLASS (def_symbol_in_progress) != C_TPDEF)
886 SF_SET_FUNCTION (def_symbol_in_progress);
887 } /* is a function */
889 demand_empty_rest_of_line ();
893 obj_coff_val (ignore)
896 if (def_symbol_in_progress == NULL)
898 as_warn (_(".val pseudo-op used outside of .def/.endef ignored."));
899 demand_empty_rest_of_line ();
901 } /* if not inside .def/.endef */
903 if (is_name_beginner (*input_line_pointer))
905 char *symbol_name = input_line_pointer;
906 char name_end = get_symbol_end ();
908 #ifdef tc_canonicalize_symbol_name
909 symbol_name = tc_canonicalize_symbol_name (symbol_name);
911 if (!strcmp (symbol_name, "."))
913 symbol_set_frag (def_symbol_in_progress, frag_now);
914 S_SET_VALUE (def_symbol_in_progress, (valueT) frag_now_fix ());
915 /* If the .val is != from the .def (e.g. statics) */
917 else if (strcmp (S_GET_NAME (def_symbol_in_progress), symbol_name))
922 exp.X_add_symbol = symbol_find_or_make (symbol_name);
923 exp.X_op_symbol = NULL;
924 exp.X_add_number = 0;
925 symbol_set_value_expression (def_symbol_in_progress, &exp);
927 /* If the segment is undefined when the forward reference is
928 resolved, then copy the segment id from the forward
930 SF_SET_GET_SEGMENT (def_symbol_in_progress);
932 /* Otherwise, it is the name of a non debug symbol and its value will be calculated later. */
933 *input_line_pointer = name_end;
937 S_SET_VALUE (def_symbol_in_progress, get_absolute_expression ());
938 } /* if symbol based */
940 demand_empty_rest_of_line ();
944 coff_obj_read_begin_hook ()
946 /* These had better be the same. Usually 18 bytes. */
948 know (sizeof (SYMENT) == sizeof (AUXENT));
949 know (SYMESZ == AUXESZ);
955 symbolS *coff_last_function;
956 static symbolS *coff_last_bf;
959 coff_frob_symbol (symp, punt)
963 static symbolS *last_tagP;
964 static stack *block_stack;
965 static symbolS *set_end;
966 symbolS *next_set_end = NULL;
968 if (symp == &abs_symbol)
974 if (current_lineno_sym)
975 coff_add_linesym ((symbolS *) 0);
978 block_stack = stack_init (512, sizeof (symbolS*));
980 if (S_IS_WEAK (symp))
983 S_SET_STORAGE_CLASS (symp, C_NT_WEAK);
985 S_SET_STORAGE_CLASS (symp, C_WEAKEXT);
989 if (!S_IS_DEFINED (symp)
991 && S_GET_STORAGE_CLASS (symp) != C_STAT)
992 S_SET_STORAGE_CLASS (symp, C_EXT);
994 if (!SF_GET_DEBUG (symp))
997 if (!SF_GET_LOCAL (symp)
998 && !SF_GET_STATICS (symp)
999 && (real = symbol_find_base (S_GET_NAME (symp), DO_NOT_STRIP))
1002 c_symbol_merge (symp, real);
1005 if (!S_IS_DEFINED (symp) && !SF_GET_LOCAL (symp))
1007 assert (S_GET_VALUE (symp) == 0);
1008 S_SET_EXTERNAL (symp);
1010 else if (S_GET_STORAGE_CLASS (symp) == C_NULL)
1012 if (S_GET_SEGMENT (symp) == text_section
1013 && symp != seg_info (text_section)->sym)
1014 S_SET_STORAGE_CLASS (symp, C_LABEL);
1016 S_SET_STORAGE_CLASS (symp, C_STAT);
1018 if (SF_GET_PROCESS (symp))
1020 if (S_GET_STORAGE_CLASS (symp) == C_BLOCK)
1022 if (!strcmp (S_GET_NAME (symp), ".bb"))
1023 stack_push (block_stack, (char *) &symp);
1027 begin = *(symbolS **) stack_pop (block_stack);
1029 as_warn (_("mismatched .eb"));
1031 next_set_end = begin;
1034 if (coff_last_function == 0 && SF_GET_FUNCTION (symp))
1036 union internal_auxent *auxp;
1037 coff_last_function = symp;
1038 if (S_GET_NUMBER_AUXILIARY (symp) < 1)
1039 S_SET_NUMBER_AUXILIARY (symp, 1);
1041 &coffsymbol (symbol_get_bfdsym (symp))->native[1].u.auxent;
1042 memset (auxp->x_sym.x_fcnary.x_ary.x_dimen, 0,
1043 sizeof (auxp->x_sym.x_fcnary.x_ary.x_dimen));
1045 if (S_GET_STORAGE_CLASS (symp) == C_EFCN)
1047 if (coff_last_function == 0)
1048 as_fatal (_("C_EFCN symbol out of scope"));
1049 SA_SET_SYM_FSIZE (coff_last_function,
1050 (long) (S_GET_VALUE (symp)
1051 - S_GET_VALUE (coff_last_function)));
1052 next_set_end = coff_last_function;
1053 coff_last_function = 0;
1056 if (S_IS_EXTERNAL (symp))
1057 S_SET_STORAGE_CLASS (symp, C_EXT);
1058 else if (SF_GET_LOCAL (symp))
1061 if (SF_GET_FUNCTION (symp))
1062 symbol_get_bfdsym (symp)->flags |= BSF_FUNCTION;
1067 if (SF_GET_TAG (symp))
1069 else if (S_GET_STORAGE_CLASS (symp) == C_EOS)
1070 next_set_end = last_tagP;
1073 /* This is pretty horrible, but we have to set *punt correctly in
1074 order to call SA_SET_SYM_ENDNDX correctly. */
1075 if (! symbol_used_in_reloc_p (symp)
1076 && ((symbol_get_bfdsym (symp)->flags & BSF_SECTION_SYM) != 0
1077 || (! S_IS_EXTERNAL (symp)
1078 && ! symbol_get_tc (symp)->output
1079 && S_GET_STORAGE_CLASS (symp) != C_FILE)))
1083 if (set_end != (symbolS *) NULL
1085 && ((symbol_get_bfdsym (symp)->flags & BSF_NOT_AT_END) != 0
1086 || (S_IS_DEFINED (symp)
1087 && ! S_IS_COMMON (symp)
1088 && (! S_IS_EXTERNAL (symp) || SF_GET_FUNCTION (symp)))))
1090 SA_SET_SYM_ENDNDX (set_end, symp);
1094 if (next_set_end != NULL)
1096 if (set_end != NULL)
1097 as_warn ("Warning: internal error: forgetting to set endndx of %s",
1098 S_GET_NAME (set_end));
1099 set_end = next_set_end;
1103 && S_GET_STORAGE_CLASS (symp) == C_FCN
1104 && strcmp (S_GET_NAME (symp), ".bf") == 0)
1106 if (coff_last_bf != NULL)
1107 SA_SET_SYM_ENDNDX (coff_last_bf, symp);
1108 coff_last_bf = symp;
1111 if (coffsymbol (symbol_get_bfdsym (symp))->lineno)
1114 struct line_no *lptr;
1117 lptr = (struct line_no *) coffsymbol (symbol_get_bfdsym (symp))->lineno;
1118 for (i = 0; lptr; lptr = lptr->next)
1120 lptr = (struct line_no *) coffsymbol (symbol_get_bfdsym (symp))->lineno;
1122 /* We need i entries for line numbers, plus 1 for the first
1123 entry which BFD will override, plus 1 for the last zero
1124 entry (a marker for BFD). */
1125 l = (alent *) xmalloc ((i + 2) * sizeof (alent));
1126 coffsymbol (symbol_get_bfdsym (symp))->lineno = l;
1127 l[i + 1].line_number = 0;
1128 l[i + 1].u.sym = NULL;
1132 lptr->l.u.offset += lptr->frag->fr_address;
1140 coff_adjust_section_syms (abfd, sec, x)
1146 segment_info_type *seginfo = seg_info (sec);
1147 int nlnno, nrelocs = 0;
1149 /* RS/6000 gas creates a .debug section manually in ppc_frob_file in
1150 tc-ppc.c. Do not get confused by it. */
1151 if (seginfo == NULL)
1154 if (!strcmp (sec->name, ".text"))
1155 nlnno = coff_n_line_nos;
1159 /* @@ Hope that none of the fixups expand to more than one reloc
1161 fixS *fixp = seginfo->fix_root;
1164 if (! fixp->fx_done)
1166 fixp = fixp->fx_next;
1169 if (bfd_get_section_size_before_reloc (sec) == 0
1172 && sec != text_section
1173 && sec != data_section
1174 && sec != bss_section)
1176 secsym = section_symbol (sec);
1177 SA_SET_SCN_NRELOC (secsym, nrelocs);
1178 SA_SET_SCN_NLINNO (secsym, nlnno);
1182 coff_frob_file_after_relocs ()
1184 bfd_map_over_sections (stdoutput, coff_adjust_section_syms, (char*) 0);
1188 * implement the .section pseudo op:
1189 * .section name {, "flags"}
1191 * | +--- optional flags: 'b' for bss
1193 * +-- section name 'l' for lib
1197 * 'd' (apparently m88k for data)
1199 * 'r' for read-only data
1200 * But if the argument is not a quoted string, treat it as a
1201 * subsegment number.
1205 obj_coff_section (ignore)
1208 /* Strip out the section name */
1224 section_name = input_line_pointer;
1225 c = get_symbol_end ();
1227 name = xmalloc (input_line_pointer - section_name + 1);
1228 strcpy (name, section_name);
1230 *input_line_pointer = c;
1235 flags = SEC_NO_FLAGS;
1237 if (*input_line_pointer == ',')
1239 ++input_line_pointer;
1241 if (*input_line_pointer != '"')
1242 exp = get_absolute_expression ();
1245 ++input_line_pointer;
1246 while (*input_line_pointer != '"'
1247 && ! is_end_of_line[(unsigned char) *input_line_pointer])
1249 switch (*input_line_pointer)
1251 case 'b': flags |= SEC_ALLOC; flags &=~ SEC_LOAD; break;
1252 case 'n': flags &=~ SEC_LOAD; break;
1254 case 'w': flags |= SEC_DATA; flags &=~ SEC_READONLY; break;
1255 case 'x': flags |= SEC_CODE; break;
1256 case 'r': flags |= SEC_READONLY; break;
1258 case 'i': /* STYP_INFO */
1259 case 'l': /* STYP_LIB */
1260 case 'o': /* STYP_OVER */
1261 as_warn (_("unsupported section attribute '%c'"),
1262 *input_line_pointer);
1266 as_warn(_("unknown section attribute '%c'"),
1267 *input_line_pointer);
1270 ++input_line_pointer;
1272 if (*input_line_pointer == '"')
1273 ++input_line_pointer;
1277 sec = subseg_new (name, (subsegT) exp);
1279 if (flags != SEC_NO_FLAGS)
1283 oldflags = bfd_get_section_flags (stdoutput, sec);
1284 oldflags &= SEC_LINK_ONCE | SEC_LINK_DUPLICATES;
1287 if (! bfd_set_section_flags (stdoutput, sec, flags))
1288 as_warn (_("error setting flags for \"%s\": %s"),
1289 bfd_section_name (stdoutput, sec),
1290 bfd_errmsg (bfd_get_error ()));
1293 demand_empty_rest_of_line ();
1297 coff_adjust_symtab ()
1299 if (symbol_rootP == NULL
1300 || S_GET_STORAGE_CLASS (symbol_rootP) != C_FILE)
1301 c_dot_file_symbol ("fake");
1305 coff_frob_section (sec)
1311 bfd_vma size, n_entries, mask;
1313 /* The COFF back end in BFD requires that all section sizes be
1314 rounded up to multiples of the corresponding section alignments.
1315 Seems kinda silly to me, but that's the way it is. */
1316 size = bfd_get_section_size_before_reloc (sec);
1317 mask = ((bfd_vma) 1 << (bfd_vma) sec->alignment_power) - 1;
1320 size = (size + mask) & ~mask;
1321 bfd_set_section_size (stdoutput, sec, size);
1324 /* If the section size is non-zero, the section symbol needs an aux
1325 entry associated with it, indicating the size. We don't know
1326 all the values yet; coff_frob_symbol will fill them in later. */
1328 || sec == text_section
1329 || sec == data_section
1330 || sec == bss_section)
1332 symbolS *secsym = section_symbol (sec);
1334 S_SET_STORAGE_CLASS (secsym, C_STAT);
1335 S_SET_NUMBER_AUXILIARY (secsym, 1);
1336 SF_SET_STATICS (secsym);
1337 SA_SET_SCN_SCNLEN (secsym, size);
1340 /* @@ these should be in a "stabs.h" file, or maybe as.h */
1341 #ifndef STAB_SECTION_NAME
1342 #define STAB_SECTION_NAME ".stab"
1344 #ifndef STAB_STRING_SECTION_NAME
1345 #define STAB_STRING_SECTION_NAME ".stabstr"
1347 if (strcmp (STAB_STRING_SECTION_NAME, sec->name))
1351 sec = subseg_get (STAB_SECTION_NAME, 0);
1352 /* size is already rounded up, since other section will be listed first */
1353 size = bfd_get_section_size_before_reloc (strsec);
1355 n_entries = bfd_get_section_size_before_reloc (sec) / 12 - 1;
1357 /* Find first non-empty frag. It should be large enough. */
1358 fragp = seg_info (sec)->frchainP->frch_root;
1359 while (fragp && fragp->fr_fix == 0)
1360 fragp = fragp->fr_next;
1361 assert (fragp != 0 && fragp->fr_fix >= 12);
1363 /* Store the values. */
1364 p = fragp->fr_literal;
1365 bfd_h_put_16 (stdoutput, n_entries, (bfd_byte *) p + 6);
1366 bfd_h_put_32 (stdoutput, size, (bfd_byte *) p + 8);
1370 obj_coff_init_stab_section (seg)
1376 unsigned int stroff;
1378 /* Make space for this first symbol. */
1382 as_where (&file, (unsigned int *) NULL);
1383 stabstr_name = (char *) alloca (strlen (seg->name) + 4);
1384 strcpy (stabstr_name, seg->name);
1385 strcat (stabstr_name, "str");
1386 stroff = get_stab_string_offset (file, stabstr_name);
1388 md_number_to_chars (p, stroff, 4);
1397 return ((s == NULL) ? "(NULL)" : S_GET_NAME (s));
1405 for (symbolP = symbol_rootP; symbolP; symbolP = symbol_next (symbolP))
1407 printf(_("0x%lx: \"%s\" type = %ld, class = %d, segment = %d\n"),
1408 (unsigned long) symbolP,
1409 S_GET_NAME(symbolP),
1410 (long) S_GET_DATA_TYPE(symbolP),
1411 S_GET_STORAGE_CLASS(symbolP),
1412 (int) S_GET_SEGMENT(symbolP));
1418 #else /* not BFD_ASSEMBLER */
1421 /* This is needed because we include internal bfd things. */
1425 #include "libcoff.h"
1428 #include "coff/pe.h"
1431 /* The NOP_OPCODE is for the alignment fill value. Fill with nop so
1432 that we can stick sections together without causing trouble. */
1434 #define NOP_OPCODE 0x00
1437 /* The zeroes if symbol name is longer than 8 chars */
1438 #define S_SET_ZEROES(s,v) ((s)->sy_symbol.ost_entry.n_zeroes = (v))
1440 #define MIN(a,b) ((a) < (b)? (a) : (b))
1442 /* This vector is used to turn a gas internal segment number into a
1443 section number suitable for insertion into a coff symbol table.
1444 This must correspond to seg_info_off_by_4. */
1446 const short seg_N_TYPE[] =
1447 { /* in: segT out: N_TYPE bits */
1449 1, 2, 3, 4, 5, 6, 7, 8, 9, 10,
1450 11, 12, 13, 14, 15, 16, 17, 18, 19, 20,
1451 21, 22, 23, 24, 25, 26, 27, 28, 29, 30,
1452 31, 32, 33, 34, 35, 36, 37, 38, 39, 40,
1453 C_UNDEF_SECTION, /* SEG_UNKNOWN */
1454 C_UNDEF_SECTION, /* SEG_GOOF */
1455 C_UNDEF_SECTION, /* SEG_EXPR */
1456 C_DEBUG_SECTION, /* SEG_DEBUG */
1457 C_NTV_SECTION, /* SEG_NTV */
1458 C_PTV_SECTION, /* SEG_PTV */
1459 C_REGISTER_SECTION, /* SEG_REGISTER */
1462 int function_lineoff = -1; /* Offset in line#s where the last function
1463 started (the odd entry for line #0) */
1465 /* structure used to keep the filenames which
1466 are too long around so that we can stick them
1467 into the string table */
1468 struct filename_list
1471 struct filename_list *next;
1474 static struct filename_list *filename_list_head;
1475 static struct filename_list *filename_list_tail;
1477 static symbolS *last_line_symbol;
1479 /* Add 4 to the real value to get the index and compensate the
1480 negatives. This vector is used by S_GET_SEGMENT to turn a coff
1481 section number into a segment number
1483 static symbolS *previous_file_symbol;
1484 void c_symbol_merge ();
1485 static int line_base;
1487 symbolS *c_section_symbol ();
1490 static void fixup_segment PARAMS ((segment_info_type *segP,
1491 segT this_segment_type));
1494 static void fixup_mdeps PARAMS ((fragS *,
1499 static void fill_section PARAMS ((bfd * abfd,
1504 static int c_line_new PARAMS ((symbolS * symbol, long paddr,
1509 static void w_symbols PARAMS ((bfd * abfd, char *where,
1510 symbolS * symbol_rootP));
1512 static void adjust_stab_section PARAMS ((bfd *abfd, segT seg));
1514 static void obj_coff_lcomm PARAMS ((int));
1515 static void obj_coff_text PARAMS ((int));
1516 static void obj_coff_data PARAMS ((int));
1517 static void obj_coff_ident PARAMS ((int));
1518 void obj_coff_section PARAMS ((int));
1520 /* When not using BFD_ASSEMBLER, we permit up to 40 sections.
1522 This array maps a COFF section number into a gas section number.
1523 Because COFF uses negative section numbers, you must add 4 to the
1524 COFF section number when indexing into this array; this is done via
1525 the SEG_INFO_FROM_SECTION_NUMBER macro. This must correspond to
1528 static const segT seg_info_off_by_4[] =
1535 SEG_E0, SEG_E1, SEG_E2, SEG_E3, SEG_E4,
1536 SEG_E5, SEG_E6, SEG_E7, SEG_E8, SEG_E9,
1537 SEG_E10, SEG_E11, SEG_E12, SEG_E13, SEG_E14,
1538 SEG_E15, SEG_E16, SEG_E17, SEG_E18, SEG_E19,
1539 SEG_E20, SEG_E21, SEG_E22, SEG_E23, SEG_E24,
1540 SEG_E25, SEG_E26, SEG_E27, SEG_E28, SEG_E29,
1541 SEG_E30, SEG_E31, SEG_E32, SEG_E33, SEG_E34,
1542 SEG_E35, SEG_E36, SEG_E37, SEG_E38, SEG_E39,
1555 #define SEG_INFO_FROM_SECTION_NUMBER(x) (seg_info_off_by_4[(x)+4])
1557 static relax_addressT
1558 relax_align (address, alignment)
1559 relax_addressT address;
1562 relax_addressT mask;
1563 relax_addressT new_address;
1565 mask = ~((~0) << alignment);
1566 new_address = (address + mask) & (~mask);
1567 return (new_address - address);
1575 return SEG_INFO_FROM_SECTION_NUMBER (x->sy_symbol.ost_entry.n_scnum);
1578 /* calculate the size of the frag chain and fill in the section header
1579 to contain all of it, also fill in the addr of the sections */
1581 size_section (abfd, idx)
1582 bfd *abfd ATTRIBUTE_UNUSED;
1586 unsigned int size = 0;
1587 fragS *frag = segment_info[idx].frchainP->frch_root;
1590 size = frag->fr_address;
1591 if (frag->fr_address != size)
1593 fprintf (stderr, _("Out of step\n"));
1594 size = frag->fr_address;
1597 switch (frag->fr_type)
1599 #ifdef TC_COFF_SIZEMACHDEP
1600 case rs_machine_dependent:
1601 size += TC_COFF_SIZEMACHDEP (frag);
1605 assert (frag->fr_symbol == 0);
1608 size += frag->fr_fix;
1609 size += frag->fr_offset * frag->fr_var;
1616 size += frag->fr_fix;
1617 off = relax_align (size, frag->fr_offset);
1618 if (frag->fr_subtype != 0 && off > frag->fr_subtype)
1624 BAD_CASE (frag->fr_type);
1627 frag = frag->fr_next;
1629 segment_info[idx].scnhdr.s_size = size;
1635 count_entries_in_chain (idx)
1638 unsigned int nrelocs;
1641 /* Count the relocations */
1642 fixup_ptr = segment_info[idx].fix_root;
1644 while (fixup_ptr != (fixS *) NULL)
1646 if (fixup_ptr->fx_done == 0 && TC_COUNT_RELOC (fixup_ptr))
1649 if (fixup_ptr->fx_r_type == RELOC_CONSTH)
1658 fixup_ptr = fixup_ptr->fx_next;
1665 static int compare_external_relocs PARAMS ((const PTR, const PTR));
1667 /* AUX's ld expects relocations to be sorted */
1669 compare_external_relocs (x, y)
1673 struct external_reloc *a = (struct external_reloc *) x;
1674 struct external_reloc *b = (struct external_reloc *) y;
1675 bfd_vma aadr = bfd_getb32 (a->r_vaddr);
1676 bfd_vma badr = bfd_getb32 (b->r_vaddr);
1677 return (aadr < badr ? -1 : badr < aadr ? 1 : 0);
1682 /* output all the relocations for a section */
1684 do_relocs_for (abfd, h, file_cursor)
1687 unsigned long *file_cursor;
1689 unsigned int nrelocs;
1691 unsigned long reloc_start = *file_cursor;
1693 for (idx = SEG_E0; idx < SEG_LAST; idx++)
1695 if (segment_info[idx].scnhdr.s_name[0])
1697 struct external_reloc *ext_ptr;
1698 struct external_reloc *external_reloc_vec;
1699 unsigned int external_reloc_size;
1700 unsigned int base = segment_info[idx].scnhdr.s_paddr;
1701 fixS *fix_ptr = segment_info[idx].fix_root;
1702 nrelocs = count_entries_in_chain (idx);
1705 /* Bypass this stuff if no relocs. This also incidentally
1706 avoids a SCO bug, where free(malloc(0)) tends to crash. */
1708 external_reloc_size = nrelocs * RELSZ;
1709 external_reloc_vec =
1710 (struct external_reloc *) malloc (external_reloc_size);
1712 ext_ptr = external_reloc_vec;
1714 /* Fill in the internal coff style reloc struct from the
1715 internal fix list. */
1718 struct internal_reloc intr;
1720 /* Only output some of the relocations */
1721 if (fix_ptr->fx_done == 0 && TC_COUNT_RELOC (fix_ptr))
1723 #ifdef TC_RELOC_MANGLE
1724 TC_RELOC_MANGLE (&segment_info[idx], fix_ptr, &intr,
1729 symbolS *symbol_ptr = fix_ptr->fx_addsy;
1731 intr.r_type = TC_COFF_FIX2RTYPE (fix_ptr);
1733 base + fix_ptr->fx_frag->fr_address + fix_ptr->fx_where;
1735 #ifdef TC_KEEP_FX_OFFSET
1736 intr.r_offset = fix_ptr->fx_offset;
1741 while (symbol_ptr->sy_value.X_op == O_symbol
1742 && (! S_IS_DEFINED (symbol_ptr)
1743 || S_IS_COMMON (symbol_ptr)))
1747 /* We must avoid looping, as that can occur
1748 with a badly written program. */
1749 n = symbol_ptr->sy_value.X_add_symbol;
1750 if (n == symbol_ptr)
1755 /* Turn the segment of the symbol into an offset. */
1758 resolve_symbol_value (symbol_ptr, 1);
1759 if (! symbol_ptr->sy_resolved)
1764 if (expr_symbol_where (symbol_ptr, &file, &line))
1765 as_bad_where (file, line,
1766 _("unresolved relocation"));
1768 as_bad (_("bad relocation: symbol `%s' not in symbol table"),
1769 S_GET_NAME (symbol_ptr));
1771 dot = segment_info[S_GET_SEGMENT (symbol_ptr)].dot;
1774 intr.r_symndx = dot->sy_number;
1778 intr.r_symndx = symbol_ptr->sy_number;
1788 (void) bfd_coff_swap_reloc_out (abfd, &intr, ext_ptr);
1791 #if defined(TC_A29K)
1793 /* The 29k has a special kludge for the high 16 bit
1794 reloc. Two relocations are emited, R_IHIHALF,
1795 and R_IHCONST. The second one doesn't contain a
1796 symbol, but uses the value for offset. */
1798 if (intr.r_type == R_IHIHALF)
1800 /* now emit the second bit */
1801 intr.r_type = R_IHCONST;
1802 intr.r_symndx = fix_ptr->fx_addnumber;
1803 (void) bfd_coff_swap_reloc_out (abfd, &intr, ext_ptr);
1809 fix_ptr = fix_ptr->fx_next;
1813 /* Sort the reloc table */
1814 qsort ((PTR) external_reloc_vec, nrelocs,
1815 sizeof (struct external_reloc), compare_external_relocs);
1818 /* Write out the reloc table */
1819 bfd_write ((PTR) external_reloc_vec, 1, external_reloc_size,
1821 free (external_reloc_vec);
1823 /* Fill in section header info. */
1824 segment_info[idx].scnhdr.s_relptr = *file_cursor;
1825 *file_cursor += external_reloc_size;
1826 segment_info[idx].scnhdr.s_nreloc = nrelocs;
1831 segment_info[idx].scnhdr.s_relptr = 0;
1835 /* Set relocation_size field in file headers */
1836 H_SET_RELOCATION_SIZE (h, *file_cursor - reloc_start, 0);
1840 /* run through a frag chain and write out the data to go with it, fill
1841 in the scnhdrs with the info on the file postions
1844 fill_section (abfd, h, file_cursor)
1846 object_headers *h ATTRIBUTE_UNUSED;
1847 unsigned long *file_cursor;
1851 unsigned int paddr = 0;
1853 for (i = SEG_E0; i < SEG_UNKNOWN; i++)
1855 unsigned int offset = 0;
1856 struct internal_scnhdr *s = &(segment_info[i].scnhdr);
1862 fragS *frag = segment_info[i].frchainP->frch_root;
1869 buffer = xmalloc (s->s_size);
1870 s->s_scnptr = *file_cursor;
1872 know (s->s_paddr == paddr);
1874 if (strcmp (s->s_name, ".text") == 0)
1875 s->s_flags |= STYP_TEXT;
1876 else if (strcmp (s->s_name, ".data") == 0)
1877 s->s_flags |= STYP_DATA;
1878 else if (strcmp (s->s_name, ".bss") == 0)
1881 s->s_flags |= STYP_BSS;
1883 /* @@ Should make the i386 and a29k coff targets define
1884 COFF_NOLOAD_PROBLEM, and have only one test here. */
1887 #ifndef COFF_NOLOAD_PROBLEM
1888 /* Apparently the SVR3 linker (and exec syscall) and UDI
1889 mondfe progrem are confused by noload sections. */
1890 s->s_flags |= STYP_NOLOAD;
1895 else if (strcmp (s->s_name, ".lit") == 0)
1896 s->s_flags = STYP_LIT | STYP_TEXT;
1897 else if (strcmp (s->s_name, ".init") == 0)
1898 s->s_flags |= STYP_TEXT;
1899 else if (strcmp (s->s_name, ".fini") == 0)
1900 s->s_flags |= STYP_TEXT;
1901 else if (strncmp (s->s_name, ".comment", 8) == 0)
1902 s->s_flags |= STYP_INFO;
1906 unsigned int fill_size;
1907 switch (frag->fr_type)
1909 case rs_machine_dependent:
1912 memcpy (buffer + frag->fr_address,
1914 (unsigned int) frag->fr_fix);
1915 offset += frag->fr_fix;
1920 assert (frag->fr_symbol == 0);
1927 memcpy (buffer + frag->fr_address,
1929 (unsigned int) frag->fr_fix);
1930 offset += frag->fr_fix;
1933 fill_size = frag->fr_var;
1934 if (fill_size && frag->fr_offset > 0)
1937 unsigned int off = frag->fr_fix;
1938 for (count = frag->fr_offset; count; count--)
1940 if (fill_size + frag->fr_address + off <= s->s_size)
1942 memcpy (buffer + frag->fr_address + off,
1943 frag->fr_literal + frag->fr_fix,
1946 offset += fill_size;
1951 case rs_broken_word:
1956 frag = frag->fr_next;
1961 if (s->s_scnptr != 0)
1963 bfd_write (buffer, s->s_size, 1, abfd);
1964 *file_cursor += s->s_size;
1973 /* Coff file generation & utilities */
1976 coff_header_append (abfd, h)
1983 #ifdef COFF_LONG_SECTION_NAMES
1984 unsigned long string_size = 4;
1987 bfd_seek (abfd, 0, 0);
1989 #ifndef OBJ_COFF_OMIT_OPTIONAL_HEADER
1990 H_SET_MAGIC_NUMBER (h, COFF_MAGIC);
1991 H_SET_VERSION_STAMP (h, 0);
1992 H_SET_ENTRY_POINT (h, 0);
1993 H_SET_TEXT_START (h, segment_info[SEG_E0].frchainP->frch_root->fr_address);
1994 H_SET_DATA_START (h, segment_info[SEG_E1].frchainP->frch_root->fr_address);
1995 H_SET_SIZEOF_OPTIONAL_HEADER (h, bfd_coff_swap_aouthdr_out(abfd, &h->aouthdr,
1997 #else /* defined (OBJ_COFF_OMIT_OPTIONAL_HEADER) */
1998 H_SET_SIZEOF_OPTIONAL_HEADER (h, 0);
1999 #endif /* defined (OBJ_COFF_OMIT_OPTIONAL_HEADER) */
2001 i = bfd_coff_swap_filehdr_out (abfd, &h->filehdr, buffer);
2003 bfd_write (buffer, i, 1, abfd);
2004 bfd_write (buffero, H_GET_SIZEOF_OPTIONAL_HEADER (h), 1, abfd);
2006 for (i = SEG_E0; i < SEG_LAST; i++)
2008 if (segment_info[i].scnhdr.s_name[0])
2012 #ifdef COFF_LONG_SECTION_NAMES
2013 /* Support long section names as found in PE. This code
2014 must coordinate with that in write_object_file and
2016 if (strlen (segment_info[i].name) > SCNNMLEN)
2018 memset (segment_info[i].scnhdr.s_name, 0, SCNNMLEN);
2019 sprintf (segment_info[i].scnhdr.s_name, "/%lu", string_size);
2020 string_size += strlen (segment_info[i].name) + 1;
2024 size = bfd_coff_swap_scnhdr_out (abfd,
2025 &(segment_info[i].scnhdr),
2028 as_bad (_("bfd_coff_swap_scnhdr_out failed"));
2029 bfd_write (buffer, size, 1, abfd);
2036 symbol_to_chars (abfd, where, symbolP)
2041 unsigned int numaux = symbolP->sy_symbol.ost_entry.n_numaux;
2045 /* Turn any symbols with register attributes into abs symbols */
2046 if (S_GET_SEGMENT (symbolP) == reg_section)
2048 S_SET_SEGMENT (symbolP, absolute_section);
2050 /* At the same time, relocate all symbols to their output value */
2053 val = (segment_info[S_GET_SEGMENT (symbolP)].scnhdr.s_paddr
2054 + S_GET_VALUE (symbolP));
2056 val = S_GET_VALUE (symbolP);
2059 S_SET_VALUE (symbolP, val);
2061 symbolP->sy_symbol.ost_entry.n_value = val;
2063 where += bfd_coff_swap_sym_out (abfd, &symbolP->sy_symbol.ost_entry,
2066 for (i = 0; i < numaux; i++)
2068 where += bfd_coff_swap_aux_out (abfd,
2069 &symbolP->sy_symbol.ost_auxent[i],
2070 S_GET_DATA_TYPE (symbolP),
2071 S_GET_STORAGE_CLASS (symbolP),
2079 coff_obj_symbol_new_hook (symbolP)
2082 char underscore = 0; /* Symbol has leading _ */
2084 /* Effective symbol */
2085 /* Store the pointer in the offset. */
2086 S_SET_ZEROES (symbolP, 0L);
2087 S_SET_DATA_TYPE (symbolP, T_NULL);
2088 S_SET_STORAGE_CLASS (symbolP, 0);
2089 S_SET_NUMBER_AUXILIARY (symbolP, 0);
2090 /* Additional information */
2091 symbolP->sy_symbol.ost_flags = 0;
2092 /* Auxiliary entries */
2093 memset ((char *) &symbolP->sy_symbol.ost_auxent[0], 0, AUXESZ);
2095 if (S_IS_STRING (symbolP))
2096 SF_SET_STRING (symbolP);
2097 if (!underscore && S_IS_LOCAL (symbolP))
2098 SF_SET_LOCAL (symbolP);
2102 * Handle .ln directives.
2106 obj_coff_ln (appline)
2111 if (! appline && def_symbol_in_progress != NULL)
2113 as_warn (_(".ln pseudo-op inside .def/.endef: ignored."));
2114 demand_empty_rest_of_line ();
2116 } /* wrong context */
2118 l = get_absolute_expression ();
2119 c_line_new (0, frag_now_fix (), l, frag_now);
2122 new_logical_line ((char *) NULL, l - 1);
2132 listing_source_line ((unsigned int) l);
2137 demand_empty_rest_of_line ();
2143 * Handle .def directives.
2145 * One might ask : why can't we symbol_new if the symbol does not
2146 * already exist and fill it with debug information. Because of
2147 * the C_EFCN special symbol. It would clobber the value of the
2148 * function symbol before we have a chance to notice that it is
2149 * a C_EFCN. And a second reason is that the code is more clear this
2150 * way. (at least I think it is :-).
2154 #define SKIP_SEMI_COLON() while (*input_line_pointer++ != ';')
2155 #define SKIP_WHITESPACES() while (*input_line_pointer == ' ' || \
2156 *input_line_pointer == '\t') \
2157 input_line_pointer++;
2161 int what ATTRIBUTE_UNUSED;
2163 char name_end; /* Char after the end of name */
2164 char *symbol_name; /* Name of the debug symbol */
2165 char *symbol_name_copy; /* Temporary copy of the name */
2166 unsigned int symbol_name_length;
2168 if (def_symbol_in_progress != NULL)
2170 as_warn (_(".def pseudo-op used inside of .def/.endef: ignored."));
2171 demand_empty_rest_of_line ();
2173 } /* if not inside .def/.endef */
2175 SKIP_WHITESPACES ();
2177 def_symbol_in_progress = (symbolS *) obstack_alloc (¬es, sizeof (*def_symbol_in_progress));
2178 memset (def_symbol_in_progress, 0, sizeof (*def_symbol_in_progress));
2180 symbol_name = input_line_pointer;
2181 name_end = get_symbol_end ();
2182 symbol_name_length = strlen (symbol_name);
2183 symbol_name_copy = xmalloc (symbol_name_length + 1);
2184 strcpy (symbol_name_copy, symbol_name);
2185 #ifdef tc_canonicalize_symbol_name
2186 symbol_name_copy = tc_canonicalize_symbol_name (symbol_name_copy);
2189 /* Initialize the new symbol */
2190 #ifdef STRIP_UNDERSCORE
2191 S_SET_NAME (def_symbol_in_progress, (*symbol_name_copy == '_'
2192 ? symbol_name_copy + 1
2193 : symbol_name_copy));
2194 #else /* STRIP_UNDERSCORE */
2195 S_SET_NAME (def_symbol_in_progress, symbol_name_copy);
2196 #endif /* STRIP_UNDERSCORE */
2197 /* free(symbol_name_copy); */
2198 def_symbol_in_progress->sy_name_offset = (unsigned long) ~0;
2199 def_symbol_in_progress->sy_number = ~0;
2200 def_symbol_in_progress->sy_frag = &zero_address_frag;
2201 S_SET_VALUE (def_symbol_in_progress, 0);
2203 if (S_IS_STRING (def_symbol_in_progress))
2204 SF_SET_STRING (def_symbol_in_progress);
2206 *input_line_pointer = name_end;
2208 demand_empty_rest_of_line ();
2211 unsigned int dim_index;
2215 obj_coff_endef (ignore)
2216 int ignore ATTRIBUTE_UNUSED;
2218 symbolS *symbolP = 0;
2219 /* DIM BUG FIX sac@cygnus.com */
2221 if (def_symbol_in_progress == NULL)
2223 as_warn (_(".endef pseudo-op used outside of .def/.endef: ignored."));
2224 demand_empty_rest_of_line ();
2226 } /* if not inside .def/.endef */
2228 /* Set the section number according to storage class. */
2229 switch (S_GET_STORAGE_CLASS (def_symbol_in_progress))
2234 SF_SET_TAG (def_symbol_in_progress);
2235 /* intentional fallthrough */
2238 SF_SET_DEBUG (def_symbol_in_progress);
2239 S_SET_SEGMENT (def_symbol_in_progress, SEG_DEBUG);
2243 SF_SET_LOCAL (def_symbol_in_progress); /* Do not emit this symbol. */
2244 /* intentional fallthrough */
2246 SF_SET_PROCESS (def_symbol_in_progress); /* Will need processing before writing */
2247 /* intentional fallthrough */
2249 S_SET_SEGMENT (def_symbol_in_progress, SEG_E0);
2251 if (strcmp (S_GET_NAME (def_symbol_in_progress), ".bf") == 0)
2253 if (function_lineoff < 0)
2255 fprintf (stderr, _("`.bf' symbol without preceding function\n"));
2256 } /* missing function symbol */
2257 SA_GET_SYM_LNNOPTR (last_line_symbol) = function_lineoff;
2259 SF_SET_PROCESS (last_line_symbol);
2260 SF_SET_ADJ_LNNOPTR (last_line_symbol);
2261 SF_SET_PROCESS (def_symbol_in_progress);
2262 function_lineoff = -1;
2264 /* Value is always set to . */
2265 def_symbol_in_progress->sy_frag = frag_now;
2266 S_SET_VALUE (def_symbol_in_progress, (valueT) frag_now_fix ());
2271 #endif /* C_AUTOARG */
2281 SF_SET_DEBUG (def_symbol_in_progress);
2282 S_SET_SEGMENT (def_symbol_in_progress, absolute_section);
2292 /* Valid but set somewhere else (s_comm, s_lcomm, colon) */
2298 as_warn (_("unexpected storage class %d"), S_GET_STORAGE_CLASS (def_symbol_in_progress));
2300 } /* switch on storage class */
2302 /* Now that we have built a debug symbol, try to find if we should
2303 merge with an existing symbol or not. If a symbol is C_EFCN or
2304 absolute_section or untagged SEG_DEBUG it never merges. We also
2305 don't merge labels, which are in a different namespace, nor
2306 symbols which have not yet been defined since they are typically
2307 unique, nor do we merge tags with non-tags. */
2309 /* Two cases for functions. Either debug followed by definition or
2310 definition followed by debug. For definition first, we will
2311 merge the debug symbol into the definition. For debug first, the
2312 lineno entry MUST point to the definition function or else it
2313 will point off into space when crawl_symbols() merges the debug
2314 symbol into the real symbol. Therefor, let's presume the debug
2315 symbol is a real function reference. */
2317 /* FIXME-SOON If for some reason the definition label/symbol is
2318 never seen, this will probably leave an undefined symbol at link
2321 if (S_GET_STORAGE_CLASS (def_symbol_in_progress) == C_EFCN
2322 || S_GET_STORAGE_CLASS (def_symbol_in_progress) == C_LABEL
2323 || (S_GET_SEGMENT (def_symbol_in_progress) == SEG_DEBUG
2324 && !SF_GET_TAG (def_symbol_in_progress))
2325 || S_GET_SEGMENT (def_symbol_in_progress) == absolute_section
2326 || def_symbol_in_progress->sy_value.X_op != O_constant
2327 || (symbolP = symbol_find_base (S_GET_NAME (def_symbol_in_progress), DO_NOT_STRIP)) == NULL
2328 || (SF_GET_TAG (def_symbol_in_progress) != SF_GET_TAG (symbolP)))
2330 symbol_append (def_symbol_in_progress, symbol_lastP, &symbol_rootP,
2335 /* This symbol already exists, merge the newly created symbol
2336 into the old one. This is not mandatory. The linker can
2337 handle duplicate symbols correctly. But I guess that it save
2338 a *lot* of space if the assembly file defines a lot of
2341 /* The debug entry (def_symbol_in_progress) is merged into the
2342 previous definition. */
2344 c_symbol_merge (def_symbol_in_progress, symbolP);
2345 /* FIXME-SOON Should *def_symbol_in_progress be free'd? xoxorich. */
2346 def_symbol_in_progress = symbolP;
2348 if (SF_GET_FUNCTION (def_symbol_in_progress)
2349 || SF_GET_TAG (def_symbol_in_progress)
2350 || S_GET_STORAGE_CLASS (def_symbol_in_progress) == C_STAT)
2352 /* For functions, and tags, and static symbols, the symbol
2353 *must* be where the debug symbol appears. Move the
2354 existing symbol to the current place. */
2355 /* If it already is at the end of the symbol list, do nothing */
2356 if (def_symbol_in_progress != symbol_lastP)
2358 symbol_remove (def_symbol_in_progress, &symbol_rootP,
2360 symbol_append (def_symbol_in_progress, symbol_lastP,
2361 &symbol_rootP, &symbol_lastP);
2362 } /* if not already in place */
2364 } /* normal or mergable */
2366 if (SF_GET_TAG (def_symbol_in_progress))
2370 oldtag = symbol_find_base (S_GET_NAME (def_symbol_in_progress),
2372 if (oldtag == NULL || ! SF_GET_TAG (oldtag))
2373 tag_insert (S_GET_NAME (def_symbol_in_progress),
2374 def_symbol_in_progress);
2377 if (SF_GET_FUNCTION (def_symbol_in_progress))
2379 know (sizeof (def_symbol_in_progress) <= sizeof (long));
2381 = c_line_new (def_symbol_in_progress, 0, 0, &zero_address_frag);
2383 SF_SET_PROCESS (def_symbol_in_progress);
2385 if (symbolP == NULL)
2387 /* That is, if this is the first time we've seen the
2389 symbol_table_insert (def_symbol_in_progress);
2390 } /* definition follows debug */
2391 } /* Create the line number entry pointing to the function being defined */
2393 def_symbol_in_progress = NULL;
2394 demand_empty_rest_of_line ();
2398 obj_coff_dim (ignore)
2399 int ignore ATTRIBUTE_UNUSED;
2403 if (def_symbol_in_progress == NULL)
2405 as_warn (_(".dim pseudo-op used outside of .def/.endef: ignored."));
2406 demand_empty_rest_of_line ();
2408 } /* if not inside .def/.endef */
2410 S_SET_NUMBER_AUXILIARY (def_symbol_in_progress, 1);
2412 for (dim_index = 0; dim_index < DIMNUM; dim_index++)
2414 SKIP_WHITESPACES ();
2415 SA_SET_SYM_DIMEN (def_symbol_in_progress, dim_index,
2416 get_absolute_expression ());
2418 switch (*input_line_pointer)
2421 input_line_pointer++;
2425 as_warn (_("badly formed .dim directive ignored"));
2426 /* intentional fallthrough */
2434 demand_empty_rest_of_line ();
2438 obj_coff_line (ignore)
2439 int ignore ATTRIBUTE_UNUSED;
2444 if (def_symbol_in_progress == NULL)
2450 name = S_GET_NAME (def_symbol_in_progress);
2451 this_base = get_absolute_expression ();
2453 /* Only .bf symbols indicate the use of a new base line number; the
2454 line numbers associated with .ef, .bb, .eb are relative to the
2455 start of the containing function. */
2456 if (!strcmp (".bf", name))
2458 #if 0 /* XXX Can we ever have line numbers going backwards? */
2459 if (this_base > line_base)
2462 line_base = this_base;
2470 listing_source_line ((unsigned int) line_base);
2476 S_SET_NUMBER_AUXILIARY (def_symbol_in_progress, 1);
2477 SA_SET_SYM_LNNO (def_symbol_in_progress, this_base);
2479 demand_empty_rest_of_line ();
2483 obj_coff_size (ignore)
2484 int ignore ATTRIBUTE_UNUSED;
2486 if (def_symbol_in_progress == NULL)
2488 as_warn (_(".size pseudo-op used outside of .def/.endef ignored."));
2489 demand_empty_rest_of_line ();
2491 } /* if not inside .def/.endef */
2493 S_SET_NUMBER_AUXILIARY (def_symbol_in_progress, 1);
2494 SA_SET_SYM_SIZE (def_symbol_in_progress, get_absolute_expression ());
2495 demand_empty_rest_of_line ();
2499 obj_coff_scl (ignore)
2500 int ignore ATTRIBUTE_UNUSED;
2502 if (def_symbol_in_progress == NULL)
2504 as_warn (_(".scl pseudo-op used outside of .def/.endef ignored."));
2505 demand_empty_rest_of_line ();
2507 } /* if not inside .def/.endef */
2509 S_SET_STORAGE_CLASS (def_symbol_in_progress, get_absolute_expression ());
2510 demand_empty_rest_of_line ();
2514 obj_coff_tag (ignore)
2515 int ignore ATTRIBUTE_UNUSED;
2520 if (def_symbol_in_progress == NULL)
2522 as_warn (_(".tag pseudo-op used outside of .def/.endef ignored."));
2523 demand_empty_rest_of_line ();
2527 S_SET_NUMBER_AUXILIARY (def_symbol_in_progress, 1);
2528 symbol_name = input_line_pointer;
2529 name_end = get_symbol_end ();
2530 #ifdef tc_canonicalize_symbol_name
2531 symbol_name = tc_canonicalize_symbol_name (symbol_name);
2534 /* Assume that the symbol referred to by .tag is always defined.
2535 This was a bad assumption. I've added find_or_make. xoxorich. */
2536 SA_SET_SYM_TAGNDX (def_symbol_in_progress,
2537 (long) tag_find_or_make (symbol_name));
2538 if (SA_GET_SYM_TAGNDX (def_symbol_in_progress) == 0L)
2540 as_warn (_("tag not found for .tag %s"), symbol_name);
2543 SF_SET_TAGGED (def_symbol_in_progress);
2544 *input_line_pointer = name_end;
2546 demand_empty_rest_of_line ();
2550 obj_coff_type (ignore)
2551 int ignore ATTRIBUTE_UNUSED;
2553 if (def_symbol_in_progress == NULL)
2555 as_warn (_(".type pseudo-op used outside of .def/.endef ignored."));
2556 demand_empty_rest_of_line ();
2558 } /* if not inside .def/.endef */
2560 S_SET_DATA_TYPE (def_symbol_in_progress, get_absolute_expression ());
2562 if (ISFCN (S_GET_DATA_TYPE (def_symbol_in_progress)) &&
2563 S_GET_STORAGE_CLASS (def_symbol_in_progress) != C_TPDEF)
2565 SF_SET_FUNCTION (def_symbol_in_progress);
2566 } /* is a function */
2568 demand_empty_rest_of_line ();
2572 obj_coff_val (ignore)
2573 int ignore ATTRIBUTE_UNUSED;
2575 if (def_symbol_in_progress == NULL)
2577 as_warn (_(".val pseudo-op used outside of .def/.endef ignored."));
2578 demand_empty_rest_of_line ();
2580 } /* if not inside .def/.endef */
2582 if (is_name_beginner (*input_line_pointer))
2584 char *symbol_name = input_line_pointer;
2585 char name_end = get_symbol_end ();
2587 #ifdef tc_canonicalize_symbol_name
2588 symbol_name = tc_canonicalize_symbol_name (symbol_name);
2591 if (!strcmp (symbol_name, "."))
2593 def_symbol_in_progress->sy_frag = frag_now;
2594 S_SET_VALUE (def_symbol_in_progress, (valueT) frag_now_fix ());
2595 /* If the .val is != from the .def (e.g. statics) */
2597 else if (strcmp (S_GET_NAME (def_symbol_in_progress), symbol_name))
2599 def_symbol_in_progress->sy_value.X_op = O_symbol;
2600 def_symbol_in_progress->sy_value.X_add_symbol =
2601 symbol_find_or_make (symbol_name);
2602 def_symbol_in_progress->sy_value.X_op_symbol = NULL;
2603 def_symbol_in_progress->sy_value.X_add_number = 0;
2605 /* If the segment is undefined when the forward reference is
2606 resolved, then copy the segment id from the forward
2608 SF_SET_GET_SEGMENT (def_symbol_in_progress);
2610 /* FIXME: gcc can generate address expressions
2611 here in unusual cases (search for "obscure"
2612 in sdbout.c). We just ignore the offset
2613 here, thus generating incorrect debugging
2614 information. We ignore the rest of the
2617 /* Otherwise, it is the name of a non debug symbol and
2618 its value will be calculated later. */
2619 *input_line_pointer = name_end;
2621 /* FIXME: this is to avoid an error message in the
2622 FIXME case mentioned just above. */
2623 while (! is_end_of_line[(unsigned char) *input_line_pointer])
2624 ++input_line_pointer;
2628 S_SET_VALUE (def_symbol_in_progress,
2629 (valueT) get_absolute_expression ());
2630 } /* if symbol based */
2632 demand_empty_rest_of_line ();
2637 /* Handle the .linkonce pseudo-op. This is parsed by s_linkonce in
2638 read.c, which then calls this object file format specific routine. */
2641 obj_coff_pe_handle_link_once (type)
2642 enum linkonce_type type;
2644 seg_info (now_seg)->scnhdr.s_flags |= IMAGE_SCN_LNK_COMDAT;
2646 /* We store the type in the seg_info structure, and use it to set up
2647 the auxiliary entry for the section symbol in c_section_symbol. */
2648 seg_info (now_seg)->linkonce = type;
2654 coff_obj_read_begin_hook ()
2656 /* These had better be the same. Usually 18 bytes. */
2658 know (sizeof (SYMENT) == sizeof (AUXENT));
2659 know (SYMESZ == AUXESZ);
2664 /* This function runs through the symbol table and puts all the
2665 externals onto another chain */
2667 /* The chain of globals. */
2668 symbolS *symbol_globalP;
2669 symbolS *symbol_global_lastP;
2671 /* The chain of externals */
2672 symbolS *symbol_externP;
2673 symbolS *symbol_extern_lastP;
2676 symbolS *last_functionP;
2677 static symbolS *last_bfP;
2684 unsigned int symbol_number = 0;
2685 unsigned int last_file_symno = 0;
2687 struct filename_list *filename_list_scan = filename_list_head;
2689 for (symbolP = symbol_rootP;
2691 symbolP = symbolP ? symbol_next (symbolP) : symbol_rootP)
2693 if (symbolP->sy_mri_common)
2695 if (S_GET_STORAGE_CLASS (symbolP) == C_EXT
2697 || S_GET_STORAGE_CLASS (symbolP) == C_NT_WEAK
2699 || S_GET_STORAGE_CLASS (symbolP) == C_WEAKEXT)
2700 as_bad (_("%s: global symbols not supported in common sections"),
2701 S_GET_NAME (symbolP));
2702 symbol_remove (symbolP, &symbol_rootP, &symbol_lastP);
2706 if (!SF_GET_DEBUG (symbolP))
2708 /* Debug symbols do not need all this rubbish */
2709 symbolS *real_symbolP;
2711 /* L* and C_EFCN symbols never merge. */
2712 if (!SF_GET_LOCAL (symbolP)
2713 && !SF_GET_STATICS (symbolP)
2714 && S_GET_STORAGE_CLASS (symbolP) != C_LABEL
2715 && symbolP->sy_value.X_op == O_constant
2716 && (real_symbolP = symbol_find_base (S_GET_NAME (symbolP), DO_NOT_STRIP))
2717 && real_symbolP != symbolP)
2719 /* FIXME-SOON: where do dups come from?
2720 Maybe tag references before definitions? xoxorich. */
2721 /* Move the debug data from the debug symbol to the
2722 real symbol. Do NOT do the oposite (i.e. move from
2723 real symbol to debug symbol and remove real symbol from the
2724 list.) Because some pointers refer to the real symbol
2725 whereas no pointers refer to the debug symbol. */
2726 c_symbol_merge (symbolP, real_symbolP);
2727 /* Replace the current symbol by the real one */
2728 /* The symbols will never be the last or the first
2729 because : 1st symbol is .file and 3 last symbols are
2730 .text, .data, .bss */
2731 symbol_remove (real_symbolP, &symbol_rootP, &symbol_lastP);
2732 symbol_insert (real_symbolP, symbolP, &symbol_rootP, &symbol_lastP);
2733 symbol_remove (symbolP, &symbol_rootP, &symbol_lastP);
2734 symbolP = real_symbolP;
2735 } /* if not local but dup'd */
2737 if (flag_readonly_data_in_text && (S_GET_SEGMENT (symbolP) == SEG_E1))
2739 S_SET_SEGMENT (symbolP, SEG_E0);
2740 } /* push data into text */
2742 resolve_symbol_value (symbolP, 1);
2744 if (S_GET_STORAGE_CLASS (symbolP) == C_NULL)
2746 if (!S_IS_DEFINED (symbolP) && !SF_GET_LOCAL (symbolP))
2748 S_SET_EXTERNAL (symbolP);
2750 else if (S_GET_SEGMENT (symbolP) == SEG_E0)
2752 S_SET_STORAGE_CLASS (symbolP, C_LABEL);
2756 S_SET_STORAGE_CLASS (symbolP, C_STAT);
2760 /* Mainly to speed up if not -g */
2761 if (SF_GET_PROCESS (symbolP))
2763 /* Handle the nested blocks auxiliary info. */
2764 if (S_GET_STORAGE_CLASS (symbolP) == C_BLOCK)
2766 if (!strcmp (S_GET_NAME (symbolP), ".bb"))
2767 stack_push (block_stack, (char *) &symbolP);
2770 register symbolS *begin_symbolP;
2771 begin_symbolP = *(symbolS **) stack_pop (block_stack);
2772 if (begin_symbolP == (symbolS *) 0)
2773 as_warn (_("mismatched .eb"));
2775 SA_SET_SYM_ENDNDX (begin_symbolP, symbol_number + 2);
2778 /* If we are able to identify the type of a function, and we
2779 are out of a function (last_functionP == 0) then, the
2780 function symbol will be associated with an auxiliary
2782 if (last_functionP == (symbolS *) 0 &&
2783 SF_GET_FUNCTION (symbolP))
2785 last_functionP = symbolP;
2787 if (S_GET_NUMBER_AUXILIARY (symbolP) < 1)
2789 S_SET_NUMBER_AUXILIARY (symbolP, 1);
2790 } /* make it at least 1 */
2792 /* Clobber possible stale .dim information. */
2794 /* Iffed out by steve - this fries the lnnoptr info too */
2795 bzero (symbolP->sy_symbol.ost_auxent[0].x_sym.x_fcnary.x_ary.x_dimen,
2796 sizeof (symbolP->sy_symbol.ost_auxent[0].x_sym.x_fcnary.x_ary.x_dimen));
2799 if (S_GET_STORAGE_CLASS (symbolP) == C_FCN)
2801 if (strcmp (S_GET_NAME (symbolP), ".bf") == 0)
2803 if (last_bfP != NULL)
2804 SA_SET_SYM_ENDNDX (last_bfP, symbol_number);
2808 else if (S_GET_STORAGE_CLASS (symbolP) == C_EFCN)
2810 /* I don't even know if this is needed for sdb. But
2811 the standard assembler generates it, so... */
2812 if (last_functionP == (symbolS *) 0)
2813 as_fatal (_("C_EFCN symbol out of scope"));
2814 SA_SET_SYM_FSIZE (last_functionP,
2815 (long) (S_GET_VALUE (symbolP) -
2816 S_GET_VALUE (last_functionP)));
2817 SA_SET_SYM_ENDNDX (last_functionP, symbol_number);
2818 last_functionP = (symbolS *) 0;
2822 else if (SF_GET_TAG (symbolP))
2824 /* First descriptor of a structure must point to
2825 the first slot after the structure description. */
2826 last_tagP = symbolP;
2829 else if (S_GET_STORAGE_CLASS (symbolP) == C_EOS)
2831 /* +2 take in account the current symbol */
2832 SA_SET_SYM_ENDNDX (last_tagP, symbol_number + 2);
2834 else if (S_GET_STORAGE_CLASS (symbolP) == C_FILE)
2836 /* If the filename was too long to fit in the
2837 auxent, put it in the string table */
2838 if (SA_GET_FILE_FNAME_ZEROS (symbolP) == 0
2839 && SA_GET_FILE_FNAME_OFFSET (symbolP) != 0)
2841 SA_SET_FILE_FNAME_OFFSET (symbolP, string_byte_count);
2842 string_byte_count += strlen (filename_list_scan->filename) + 1;
2843 filename_list_scan = filename_list_scan->next;
2845 if (S_GET_VALUE (symbolP))
2847 S_SET_VALUE (symbolP, last_file_symno);
2848 last_file_symno = symbol_number;
2849 } /* no one points at the first .file symbol */
2850 } /* if debug or tag or eos or file */
2852 #ifdef tc_frob_coff_symbol
2853 tc_frob_coff_symbol (symbolP);
2856 /* We must put the external symbols apart. The loader
2857 does not bomb if we do not. But the references in
2858 the endndx field for a .bb symbol are not corrected
2859 if an external symbol is removed between .bb and .be.
2860 I.e in the following case :
2861 [20] .bb endndx = 22
2864 ld will move the symbol 21 to the end of the list but
2865 endndx will still be 22 instead of 21. */
2868 if (SF_GET_LOCAL (symbolP))
2870 /* remove C_EFCN and LOCAL (L...) symbols */
2871 /* next pointer remains valid */
2872 symbol_remove (symbolP, &symbol_rootP, &symbol_lastP);
2875 else if (symbolP->sy_value.X_op == O_symbol
2876 && (! S_IS_DEFINED (symbolP) || S_IS_COMMON (symbolP)))
2878 /* Skip symbols which were equated to undefined or common
2880 symbol_remove (symbolP, &symbol_rootP, &symbol_lastP);
2882 else if (!S_IS_DEFINED (symbolP)
2883 && !S_IS_DEBUG (symbolP)
2884 && !SF_GET_STATICS (symbolP)
2885 && (S_GET_STORAGE_CLASS (symbolP) == C_EXT
2887 || S_GET_STORAGE_CLASS (symbolP) == C_NT_WEAK
2889 || S_GET_STORAGE_CLASS (symbolP) == C_WEAKEXT))
2891 /* if external, Remove from the list */
2892 symbolS *hold = symbol_previous (symbolP);
2894 symbol_remove (symbolP, &symbol_rootP, &symbol_lastP);
2895 symbol_clear_list_pointers (symbolP);
2896 symbol_append (symbolP, symbol_extern_lastP, &symbol_externP, &symbol_extern_lastP);
2899 else if (! S_IS_DEBUG (symbolP)
2900 && ! SF_GET_STATICS (symbolP)
2901 && ! SF_GET_FUNCTION (symbolP)
2902 && (S_GET_STORAGE_CLASS (symbolP) == C_EXT
2904 || S_GET_STORAGE_CLASS (symbolP) == C_NT_WEAK
2906 || S_GET_STORAGE_CLASS (symbolP) == C_NT_WEAK))
2908 symbolS *hold = symbol_previous (symbolP);
2910 /* The O'Reilly COFF book says that defined global symbols
2911 come at the end of the symbol table, just before
2912 undefined global symbols. */
2914 symbol_remove (symbolP, &symbol_rootP, &symbol_lastP);
2915 symbol_clear_list_pointers (symbolP);
2916 symbol_append (symbolP, symbol_global_lastP, &symbol_globalP,
2917 &symbol_global_lastP);
2922 if (SF_GET_STRING (symbolP))
2924 symbolP->sy_name_offset = string_byte_count;
2925 string_byte_count += strlen (S_GET_NAME (symbolP)) + 1;
2929 symbolP->sy_name_offset = 0;
2930 } /* fix "long" names */
2932 symbolP->sy_number = symbol_number;
2933 symbol_number += 1 + S_GET_NUMBER_AUXILIARY (symbolP);
2934 } /* if local symbol */
2935 } /* traverse the symbol list */
2936 return symbol_number;
2942 glue_symbols (head, tail)
2946 unsigned int symbol_number = 0;
2948 while (*head != NULL)
2950 symbolS *tmp = *head;
2953 symbol_remove (tmp, head, tail);
2954 symbol_append (tmp, symbol_lastP, &symbol_rootP, &symbol_lastP);
2957 if (SF_GET_STRING (tmp))
2959 tmp->sy_name_offset = string_byte_count;
2960 string_byte_count += strlen (S_GET_NAME (tmp)) + 1;
2964 tmp->sy_name_offset = 0;
2965 } /* fix "long" names */
2967 tmp->sy_number = symbol_number;
2968 symbol_number += 1 + S_GET_NUMBER_AUXILIARY (tmp);
2969 } /* append the entire extern chain */
2971 return symbol_number;
2977 unsigned int symbol_number = 0;
2980 for (symbolP = symbol_rootP; symbolP; symbolP = symbol_next (symbolP))
2982 symbolP->sy_number = symbol_number;
2984 if (SF_GET_TAGGED (symbolP))
2988 ((symbolS *) SA_GET_SYM_TAGNDX (symbolP))->sy_number);
2991 symbol_number += 1 + S_GET_NUMBER_AUXILIARY (symbolP);
2994 return symbol_number;
2998 crawl_symbols (h, abfd)
3000 bfd *abfd ATTRIBUTE_UNUSED;
3004 /* Initialize the stack used to keep track of the matching .bb .be */
3006 block_stack = stack_init (512, sizeof (symbolS *));
3008 /* The symbol list should be ordered according to the following sequence
3011 * . debug entries for functions
3012 * . fake symbols for the sections, including .text .data and .bss
3014 * . undefined symbols
3015 * But this is not mandatory. The only important point is to put the
3016 * undefined symbols at the end of the list.
3019 /* Is there a .file symbol ? If not insert one at the beginning. */
3020 if (symbol_rootP == NULL
3021 || S_GET_STORAGE_CLASS (symbol_rootP) != C_FILE)
3023 c_dot_file_symbol ("fake");
3027 * Build up static symbols for the sections, they are filled in later
3031 for (i = SEG_E0; i < SEG_LAST; i++)
3032 if (segment_info[i].scnhdr.s_name[0])
3033 segment_info[i].dot = c_section_symbol (segment_info[i].name,
3036 /* Take all the externals out and put them into another chain */
3037 H_SET_SYMBOL_TABLE_SIZE (h, yank_symbols ());
3038 /* Take the externals and glue them onto the end.*/
3039 H_SET_SYMBOL_TABLE_SIZE (h,
3040 (H_GET_SYMBOL_COUNT (h)
3041 + glue_symbols (&symbol_globalP,
3042 &symbol_global_lastP)
3043 + glue_symbols (&symbol_externP,
3044 &symbol_extern_lastP)));
3046 H_SET_SYMBOL_TABLE_SIZE (h, tie_tags ());
3047 know (symbol_globalP == NULL);
3048 know (symbol_global_lastP == NULL);
3049 know (symbol_externP == NULL);
3050 know (symbol_extern_lastP == NULL);
3054 * Find strings by crawling along symbol table chain.
3062 struct filename_list *filename_list_scan = filename_list_head;
3064 /* Gotta do md_ byte-ordering stuff for string_byte_count first - KWK */
3065 md_number_to_chars (where, (valueT) string_byte_count, 4);
3068 #ifdef COFF_LONG_SECTION_NAMES
3069 /* Support long section names as found in PE. This code must
3070 coordinate with that in coff_header_append and write_object_file. */
3074 for (i = SEG_E0; i < SEG_LAST; i++)
3076 if (segment_info[i].scnhdr.s_name[0]
3077 && strlen (segment_info[i].name) > SCNNMLEN)
3081 size = strlen (segment_info[i].name) + 1;
3082 memcpy (where, segment_info[i].name, size);
3087 #endif /* COFF_LONG_SECTION_NAMES */
3089 for (symbolP = symbol_rootP;
3091 symbolP = symbol_next (symbolP))
3095 if (SF_GET_STRING (symbolP))
3097 size = strlen (S_GET_NAME (symbolP)) + 1;
3098 memcpy (where, S_GET_NAME (symbolP), size);
3101 if (S_GET_STORAGE_CLASS (symbolP) == C_FILE
3102 && SA_GET_FILE_FNAME_ZEROS (symbolP) == 0
3103 && SA_GET_FILE_FNAME_OFFSET (symbolP) != 0)
3105 size = strlen (filename_list_scan->filename) + 1;
3106 memcpy (where, filename_list_scan->filename, size);
3107 filename_list_scan = filename_list_scan ->next;
3114 do_linenos_for (abfd, h, file_cursor)
3117 unsigned long *file_cursor;
3120 unsigned long start = *file_cursor;
3122 for (idx = SEG_E0; idx < SEG_LAST; idx++)
3124 segment_info_type *s = segment_info + idx;
3127 if (s->scnhdr.s_nlnno != 0)
3129 struct lineno_list *line_ptr;
3131 struct external_lineno *buffer =
3132 (struct external_lineno *) xmalloc (s->scnhdr.s_nlnno * LINESZ);
3134 struct external_lineno *dst = buffer;
3136 /* Run through the table we've built and turn it into its external
3137 form, take this chance to remove duplicates */
3139 for (line_ptr = s->lineno_list_head;
3140 line_ptr != (struct lineno_list *) NULL;
3141 line_ptr = line_ptr->next)
3144 if (line_ptr->line.l_lnno == 0)
3146 /* Turn a pointer to a symbol into the symbols' index */
3147 line_ptr->line.l_addr.l_symndx =
3148 ((symbolS *) line_ptr->line.l_addr.l_symndx)->sy_number;
3152 line_ptr->line.l_addr.l_paddr += ((struct frag *) (line_ptr->frag))->fr_address;
3156 (void) bfd_coff_swap_lineno_out (abfd, &(line_ptr->line), dst);
3161 s->scnhdr.s_lnnoptr = *file_cursor;
3163 bfd_write (buffer, 1, s->scnhdr.s_nlnno * LINESZ, abfd);
3166 *file_cursor += s->scnhdr.s_nlnno * LINESZ;
3169 H_SET_LINENO_SIZE (h, *file_cursor - start);
3173 /* Now we run through the list of frag chains in a segment and
3174 make all the subsegment frags appear at the end of the
3175 list, as if the seg 0 was extra long */
3182 for (i = SEG_E0; i < SEG_UNKNOWN; i++)
3184 frchainS *head = segment_info[i].frchainP;
3186 fragS *prev_frag = &dummy;
3188 while (head && head->frch_seg == i)
3190 prev_frag->fr_next = head->frch_root;
3191 prev_frag = head->frch_last;
3192 head = head->frch_next;
3194 prev_frag->fr_next = 0;
3198 unsigned long machine;
3201 write_object_file ()
3205 struct frchain *frchain_ptr;
3207 object_headers headers;
3208 unsigned long file_cursor;
3211 abfd = bfd_openw (out_file_name, TARGET_FORMAT);
3216 as_perror (_("FATAL: Can't create %s"), out_file_name);
3217 exit (EXIT_FAILURE);
3219 bfd_set_format (abfd, bfd_object);
3220 bfd_set_arch_mach (abfd, BFD_ARCH, machine);
3222 string_byte_count = 4;
3224 for (frchain_ptr = frchain_root;
3225 frchain_ptr != (struct frchain *) NULL;
3226 frchain_ptr = frchain_ptr->frch_next)
3228 /* Run through all the sub-segments and align them up. Also
3229 close any open frags. We tack a .fill onto the end of the
3230 frag chain so that any .align's size can be worked by looking
3231 at the next frag. */
3233 subseg_set (frchain_ptr->frch_seg, frchain_ptr->frch_subseg);
3235 #ifndef SUB_SEGMENT_ALIGN
3236 #define SUB_SEGMENT_ALIGN(SEG) 1
3239 md_do_align (SUB_SEGMENT_ALIGN (now_seg), (char *) NULL, 0, 0,
3242 frag_align (SUB_SEGMENT_ALIGN (now_seg),
3243 subseg_text_p (now_seg) ? NOP_OPCODE : 0,
3248 frag_wane (frag_now);
3249 frag_now->fr_fix = 0;
3250 know (frag_now->fr_next == NULL);
3257 for (i = SEG_E0; i < SEG_UNKNOWN; i++)
3259 relax_segment (segment_info[i].frchainP->frch_root, i);
3262 H_SET_NUMBER_OF_SECTIONS (&headers, 0);
3264 /* Find out how big the sections are, and set the addresses. */
3266 for (i = SEG_E0; i < SEG_UNKNOWN; i++)
3270 segment_info[i].scnhdr.s_paddr = addr;
3271 segment_info[i].scnhdr.s_vaddr = addr;
3273 if (segment_info[i].scnhdr.s_name[0])
3275 H_SET_NUMBER_OF_SECTIONS (&headers,
3276 H_GET_NUMBER_OF_SECTIONS (&headers) + 1);
3278 #ifdef COFF_LONG_SECTION_NAMES
3279 /* Support long section names as found in PE. This code
3280 must coordinate with that in coff_header_append and
3285 len = strlen (segment_info[i].name);
3287 string_byte_count += len + 1;
3289 #endif /* COFF_LONG_SECTION_NAMES */
3292 size = size_section (abfd, (unsigned int) i);
3295 /* I think the section alignment is only used on the i960; the
3296 i960 needs it, and it should do no harm on other targets. */
3297 #ifdef ALIGNMENT_IN_S_FLAGS
3298 segment_info[i].scnhdr.s_flags |= (section_alignment[i] & 0xF) << 8;
3300 segment_info[i].scnhdr.s_align = 1 << section_alignment[i];
3304 H_SET_TEXT_SIZE (&headers, size);
3305 else if (i == SEG_E1)
3306 H_SET_DATA_SIZE (&headers, size);
3307 else if (i == SEG_E2)
3308 H_SET_BSS_SIZE (&headers, size);
3311 /* Turn the gas native symbol table shape into a coff symbol table */
3312 crawl_symbols (&headers, abfd);
3314 if (string_byte_count == 4)
3315 string_byte_count = 0;
3317 H_SET_STRING_SIZE (&headers, string_byte_count);
3323 for (i = SEG_E0; i < SEG_UNKNOWN; i++)
3325 fixup_mdeps (segment_info[i].frchainP->frch_root, &headers, i);
3326 fixup_segment (&segment_info[i], i);
3329 /* Look for ".stab" segments and fill in their initial symbols
3331 for (i = SEG_E0; i < SEG_UNKNOWN; i++)
3333 name = segment_info[i].name;
3336 && strncmp (".stab", name, 5) == 0
3337 && strncmp (".stabstr", name, 8) != 0)
3338 adjust_stab_section (abfd, i);
3341 file_cursor = H_GET_TEXT_FILE_OFFSET (&headers);
3343 bfd_seek (abfd, (file_ptr) file_cursor, 0);
3345 /* Plant the data */
3347 fill_section (abfd, &headers, &file_cursor);
3349 do_relocs_for (abfd, &headers, &file_cursor);
3351 do_linenos_for (abfd, &headers, &file_cursor);
3353 H_SET_FILE_MAGIC_NUMBER (&headers, COFF_MAGIC);
3354 #ifndef OBJ_COFF_OMIT_TIMESTAMP
3355 H_SET_TIME_STAMP (&headers, (long)time((time_t *)0));
3357 H_SET_TIME_STAMP (&headers, 0);
3359 #ifdef TC_COFF_SET_MACHINE
3360 TC_COFF_SET_MACHINE (&headers);
3364 #define COFF_FLAGS 0
3367 #ifdef KEEP_RELOC_INFO
3368 H_SET_FLAGS (&headers, ((H_GET_LINENO_SIZE(&headers) ? 0 : F_LNNO) |
3369 COFF_FLAGS | coff_flags));
3371 H_SET_FLAGS (&headers, ((H_GET_LINENO_SIZE(&headers) ? 0 : F_LNNO) |
3372 (H_GET_RELOCATION_SIZE(&headers) ? 0 : F_RELFLG) |
3373 COFF_FLAGS | coff_flags));
3377 unsigned int symtable_size = H_GET_SYMBOL_TABLE_SIZE (&headers);
3378 char *buffer1 = xmalloc (symtable_size + string_byte_count + 1);
3380 H_SET_SYMBOL_TABLE_POINTER (&headers, bfd_tell (abfd));
3381 w_symbols (abfd, buffer1, symbol_rootP);
3382 if (string_byte_count > 0)
3383 w_strings (buffer1 + symtable_size);
3384 bfd_write (buffer1, 1, symtable_size + string_byte_count, abfd);
3388 coff_header_append (abfd, &headers);
3390 /* Recent changes to write need this, but where it should
3391 go is up to Ken.. */
3392 if (bfd_close_all_done (abfd) == false)
3393 as_fatal (_("Can't close %s: %s"), out_file_name,
3394 bfd_errmsg (bfd_get_error ()));
3397 extern bfd *stdoutput;
3404 /* Add a new segment. This is called from subseg_new via the
3405 obj_new_segment macro. */
3408 obj_coff_add_segment (name)
3413 #ifndef COFF_LONG_SECTION_NAMES
3414 char buf[SCNNMLEN + 1];
3416 strncpy (buf, name, SCNNMLEN);
3417 buf[SCNNMLEN] = '\0';
3421 for (i = SEG_E0; i < SEG_LAST && segment_info[i].scnhdr.s_name[0]; i++)
3422 if (strcmp (name, segment_info[i].name) == 0)
3427 as_bad (_("Too many new sections; can't add \"%s\""), name);
3431 /* Add a new section. */
3432 strncpy (segment_info[i].scnhdr.s_name, name,
3433 sizeof (segment_info[i].scnhdr.s_name));
3434 segment_info[i].scnhdr.s_flags = STYP_REG;
3435 segment_info[i].name = xstrdup (name);
3441 * implement the .section pseudo op:
3442 * .section name {, "flags"}
3444 * | +--- optional flags: 'b' for bss
3446 * +-- section name 'l' for lib
3450 * 'd' (apparently m88k for data)
3452 * 'r' for read-only data
3453 * But if the argument is not a quoted string, treat it as a
3454 * subsegment number.
3458 obj_coff_section (ignore)
3459 int ignore ATTRIBUTE_UNUSED;
3461 /* Strip out the section name */
3462 char *section_name, *name;
3475 else if (type == 'D')
3477 segment_info[now_seg].scnhdr.s_flags |= flags;
3482 section_name = input_line_pointer;
3483 c = get_symbol_end ();
3485 name = xmalloc (input_line_pointer - section_name + 1);
3486 strcpy (name, section_name);
3488 *input_line_pointer = c;
3494 if (*input_line_pointer == ',')
3496 ++input_line_pointer;
3499 if (*input_line_pointer != '"')
3500 exp = get_absolute_expression ();
3503 ++input_line_pointer;
3504 while (*input_line_pointer != '"'
3505 && ! is_end_of_line[(unsigned char) *input_line_pointer])
3507 switch (*input_line_pointer)
3509 case 'b': flags |= STYP_BSS; break;
3510 case 'i': flags |= STYP_INFO; break;
3511 case 'l': flags |= STYP_LIB; break;
3512 case 'n': flags |= STYP_NOLOAD; break;
3513 case 'o': flags |= STYP_OVER; break;
3515 case 'w': flags |= STYP_DATA; break;
3516 case 'x': flags |= STYP_TEXT; break;
3517 case 'r': flags |= STYP_LIT; break;
3519 as_warn(_("unknown section attribute '%c'"),
3520 *input_line_pointer);
3523 ++input_line_pointer;
3525 if (*input_line_pointer == '"')
3526 ++input_line_pointer;
3530 subseg_new (name, (subsegT) exp);
3532 segment_info[now_seg].scnhdr.s_flags |= flags;
3534 demand_empty_rest_of_line ();
3539 obj_coff_text (ignore)
3540 int ignore ATTRIBUTE_UNUSED;
3542 subseg_new (".text", get_absolute_expression ());
3547 obj_coff_data (ignore)
3548 int ignore ATTRIBUTE_UNUSED;
3550 if (flag_readonly_data_in_text)
3551 subseg_new (".text", get_absolute_expression () + 1000);
3553 subseg_new (".data", get_absolute_expression ());
3557 obj_coff_ident (ignore)
3558 int ignore ATTRIBUTE_UNUSED;
3560 segT current_seg = now_seg; /* save current seg */
3561 subsegT current_subseg = now_subseg;
3562 subseg_new (".comment", 0); /* .comment seg */
3563 stringer (1); /* read string */
3564 subseg_set (current_seg, current_subseg); /* restore current seg */
3568 c_symbol_merge (debug, normal)
3572 S_SET_DATA_TYPE (normal, S_GET_DATA_TYPE (debug));
3573 S_SET_STORAGE_CLASS (normal, S_GET_STORAGE_CLASS (debug));
3575 if (S_GET_NUMBER_AUXILIARY (debug) > S_GET_NUMBER_AUXILIARY (normal))
3577 S_SET_NUMBER_AUXILIARY (normal, S_GET_NUMBER_AUXILIARY (debug));
3578 } /* take the most we have */
3580 if (S_GET_NUMBER_AUXILIARY (debug) > 0)
3582 memcpy ((char *) &normal->sy_symbol.ost_auxent[0],
3583 (char *) &debug->sy_symbol.ost_auxent[0],
3584 (unsigned int) (S_GET_NUMBER_AUXILIARY (debug) * AUXESZ));
3585 } /* Move all the auxiliary information */
3587 /* Move the debug flags. */
3588 SF_SET_DEBUG_FIELD (normal, SF_GET_DEBUG_FIELD (debug));
3589 } /* c_symbol_merge() */
3592 c_line_new (symbol, paddr, line_number, frag)
3598 struct lineno_list *new_line =
3599 (struct lineno_list *) xmalloc (sizeof (struct lineno_list));
3601 segment_info_type *s = segment_info + now_seg;
3602 new_line->line.l_lnno = line_number;
3604 if (line_number == 0)
3606 last_line_symbol = symbol;
3607 new_line->line.l_addr.l_symndx = (long) symbol;
3611 new_line->line.l_addr.l_paddr = paddr;
3614 new_line->frag = (char *) frag;
3615 new_line->next = (struct lineno_list *) NULL;
3618 if (s->lineno_list_head == (struct lineno_list *) NULL)
3620 s->lineno_list_head = new_line;
3624 s->lineno_list_tail->next = new_line;
3626 s->lineno_list_tail = new_line;
3627 return LINESZ * s->scnhdr.s_nlnno++;
3631 c_dot_file_symbol (filename)
3636 symbolP = symbol_new (".file",
3639 &zero_address_frag);
3641 S_SET_STORAGE_CLASS (symbolP, C_FILE);
3642 S_SET_NUMBER_AUXILIARY (symbolP, 1);
3644 if (strlen (filename) > FILNMLEN)
3646 /* Filename is too long to fit into an auxent,
3647 we stick it into the string table instead. We keep
3648 a linked list of the filenames we find so we can emit
3650 struct filename_list *f = ((struct filename_list *)
3651 xmalloc (sizeof (struct filename_list)));
3653 f->filename = filename;
3656 SA_SET_FILE_FNAME_ZEROS (symbolP, 0);
3657 SA_SET_FILE_FNAME_OFFSET (symbolP, 1);
3659 if (filename_list_tail)
3660 filename_list_tail->next = f;
3662 filename_list_head = f;
3663 filename_list_tail = f;
3667 SA_SET_FILE_FNAME (symbolP, filename);
3674 listing_source_file (filename);
3680 SF_SET_DEBUG (symbolP);
3681 S_SET_VALUE (symbolP, (valueT) previous_file_symbol);
3683 previous_file_symbol = symbolP;
3685 /* Make sure that the symbol is first on the symbol chain */
3686 if (symbol_rootP != symbolP)
3688 symbol_remove (symbolP, &symbol_rootP, &symbol_lastP);
3689 symbol_insert (symbolP, symbol_rootP, &symbol_rootP, &symbol_lastP);
3691 } /* c_dot_file_symbol() */
3694 * Build a 'section static' symbol.
3698 c_section_symbol (name, idx)
3704 symbolP = symbol_find_base (name, DO_NOT_STRIP);
3705 if (symbolP == NULL)
3706 symbolP = symbol_new (name, idx, 0, &zero_address_frag);
3709 /* Mmmm. I just love violating interfaces. Makes me feel...dirty. */
3710 S_SET_SEGMENT (symbolP, idx);
3711 symbolP->sy_frag = &zero_address_frag;
3714 S_SET_STORAGE_CLASS (symbolP, C_STAT);
3715 S_SET_NUMBER_AUXILIARY (symbolP, 1);
3717 SF_SET_STATICS (symbolP);
3720 /* manfred@s-direktnet.de: section symbols *must* have the LOCAL bit cleared,
3721 which is set by the new definition of LOCAL_LABEL in tc-m68k.h. */
3722 SF_CLEAR_LOCAL (symbolP);
3725 /* If the .linkonce pseudo-op was used for this section, we must
3726 store the information in the auxiliary entry for the section
3728 if (segment_info[idx].linkonce != LINKONCE_UNSET)
3732 switch (segment_info[idx].linkonce)
3736 case LINKONCE_DISCARD:
3737 type = IMAGE_COMDAT_SELECT_ANY;
3739 case LINKONCE_ONE_ONLY:
3740 type = IMAGE_COMDAT_SELECT_NODUPLICATES;
3742 case LINKONCE_SAME_SIZE:
3743 type = IMAGE_COMDAT_SELECT_SAME_SIZE;
3745 case LINKONCE_SAME_CONTENTS:
3746 type = IMAGE_COMDAT_SELECT_EXACT_MATCH;
3750 SYM_AUXENT (symbolP)->x_scn.x_comdat = type;
3755 } /* c_section_symbol() */
3758 w_symbols (abfd, where, symbol_rootP)
3761 symbolS * symbol_rootP;
3766 /* First fill in those values we have only just worked out */
3767 for (i = SEG_E0; i < SEG_LAST; i++)
3769 symbolP = segment_info[i].dot;
3772 SA_SET_SCN_SCNLEN (symbolP, segment_info[i].scnhdr.s_size);
3773 SA_SET_SCN_NRELOC (symbolP, segment_info[i].scnhdr.s_nreloc);
3774 SA_SET_SCN_NLINNO (symbolP, segment_info[i].scnhdr.s_nlnno);
3779 * Emit all symbols left in the symbol chain.
3781 for (symbolP = symbol_rootP; symbolP; symbolP = symbol_next (symbolP))
3783 /* Used to save the offset of the name. It is used to point
3784 to the string in memory but must be a file offset. */
3785 register char *temp;
3787 /* We can't fix the lnnoptr field in yank_symbols with the other
3788 adjustments, because we have to wait until we know where they
3790 if (SF_GET_ADJ_LNNOPTR (symbolP))
3792 SA_GET_SYM_LNNOPTR (symbolP) +=
3793 segment_info[S_GET_SEGMENT (symbolP)].scnhdr.s_lnnoptr;
3796 tc_coff_symbol_emit_hook (symbolP);
3798 temp = S_GET_NAME (symbolP);
3799 if (SF_GET_STRING (symbolP))
3801 S_SET_OFFSET (symbolP, symbolP->sy_name_offset);
3802 S_SET_ZEROES (symbolP, 0);
3806 memset (symbolP->sy_symbol.ost_entry.n_name, 0, SYMNMLEN);
3807 strncpy (symbolP->sy_symbol.ost_entry.n_name, temp, SYMNMLEN);
3809 where = symbol_to_chars (abfd, where, symbolP);
3810 S_SET_NAME (symbolP, temp);
3816 obj_coff_lcomm (ignore)
3817 int ignore ATTRIBUTE_UNUSED;
3829 name = input_line_pointer;
3831 c = get_symbol_end ();
3832 p = input_line_pointer;
3835 if (*input_line_pointer != ',')
3837 as_bad (_("Expected comma after name"));
3838 ignore_rest_of_line ();
3841 if (*input_line_pointer == '\n')
3843 as_bad (_("Missing size expression"));
3846 input_line_pointer++;
3847 if ((temp = get_absolute_expression ()) < 0)
3849 as_warn (_("lcomm length (%d.) <0! Ignored."), temp);
3850 ignore_rest_of_line ();
3855 symbolP = symbol_find_or_make(name);
3857 if (S_GET_SEGMENT(symbolP) == SEG_UNKNOWN &&
3858 S_GET_VALUE(symbolP) == 0)
3863 segT current_seg = now_seg; /* save current seg */
3864 subsegT current_subseg = now_subseg;
3866 subseg_set (SEG_E2, 1);
3867 symbolP->sy_frag = frag_now;
3868 p = frag_var(rs_org, 1, 1, (relax_substateT)0, symbolP,
3869 (offsetT) temp, (char *) 0);
3871 subseg_set (current_seg, current_subseg); /* restore current seg */
3872 S_SET_SEGMENT(symbolP, SEG_E2);
3873 S_SET_STORAGE_CLASS(symbolP, C_STAT);
3877 as_bad(_("Symbol %s already defined"), name);
3879 demand_empty_rest_of_line();
3884 fixup_mdeps (frags, h, this_segment)
3889 subseg_change (this_segment, 0);
3892 switch (frags->fr_type)
3898 HANDLE_ALIGN (frags);
3900 frags->fr_type = rs_fill;
3902 ((frags->fr_next->fr_address - frags->fr_address - frags->fr_fix)
3905 case rs_machine_dependent:
3906 md_convert_frag (h, this_segment, frags);
3912 frags = frags->fr_next;
3918 #ifndef TC_FORCE_RELOCATION
3919 #define TC_FORCE_RELOCATION(fix) 0
3923 fixup_segment (segP, this_segment_type)
3924 segment_info_type * segP;
3925 segT this_segment_type;
3927 register fixS * fixP;
3928 register symbolS *add_symbolP;
3929 register symbolS *sub_symbolP;
3932 register char *place;
3933 register long where;
3934 register char pcrel;
3935 register fragS *fragP;
3936 register segT add_symbol_segment = absolute_section;
3938 for (fixP = segP->fix_root; fixP; fixP = fixP->fx_next)
3940 fragP = fixP->fx_frag;
3942 where = fixP->fx_where;
3943 place = fragP->fr_literal + where;
3944 size = fixP->fx_size;
3945 add_symbolP = fixP->fx_addsy;
3946 sub_symbolP = fixP->fx_subsy;
3947 add_number = fixP->fx_offset;
3948 pcrel = fixP->fx_pcrel;
3950 /* We want function-relative stabs to work on systems which
3951 may use a relaxing linker; thus we must handle the sym1-sym2
3952 fixups function-relative stabs generates.
3954 Of course, if you actually enable relaxing in the linker, the
3955 line and block scoping information is going to be incorrect
3956 in some cases. The only way to really fix this is to support
3957 a reloc involving the difference of two symbols. */
3959 && (!sub_symbolP || pcrel))
3963 if (fixP->fx_tcbit && SF_GET_CALLNAME (add_symbolP))
3965 /* Relocation should be done via the associated 'bal' entry
3968 if (!SF_GET_BALNAME (tc_get_bal_of_call (add_symbolP)))
3970 as_bad_where (fixP->fx_file, fixP->fx_line,
3971 _("No 'bal' entry point for leafproc %s"),
3972 S_GET_NAME (add_symbolP));
3975 fixP->fx_addsy = add_symbolP = tc_get_bal_of_call (add_symbolP);
3979 /* Make sure the symbols have been resolved; this may not have
3980 happened if these are expression symbols. */
3981 if (add_symbolP != NULL && ! add_symbolP->sy_resolved)
3982 resolve_symbol_value (add_symbolP, 1);
3984 if (add_symbolP != NULL)
3986 /* If this fixup is against a symbol which has been equated
3987 to another symbol, convert it to the other symbol. */
3988 if (add_symbolP->sy_value.X_op == O_symbol
3989 && (! S_IS_DEFINED (add_symbolP)
3990 || S_IS_COMMON (add_symbolP)))
3992 while (add_symbolP->sy_value.X_op == O_symbol
3993 && (! S_IS_DEFINED (add_symbolP)
3994 || S_IS_COMMON (add_symbolP)))
3998 /* We must avoid looping, as that can occur with a
3999 badly written program. */
4000 n = add_symbolP->sy_value.X_add_symbol;
4001 if (n == add_symbolP)
4003 add_number += add_symbolP->sy_value.X_add_number;
4006 fixP->fx_addsy = add_symbolP;
4007 fixP->fx_offset = add_number;
4011 if (sub_symbolP != NULL && ! sub_symbolP->sy_resolved)
4012 resolve_symbol_value (sub_symbolP, 1);
4014 if (add_symbolP != NULL
4015 && add_symbolP->sy_mri_common)
4017 know (add_symbolP->sy_value.X_op == O_symbol);
4018 add_number += S_GET_VALUE (add_symbolP);
4019 fixP->fx_offset = add_number;
4020 add_symbolP = fixP->fx_addsy = add_symbolP->sy_value.X_add_symbol;
4025 add_symbol_segment = S_GET_SEGMENT (add_symbolP);
4026 } /* if there is an addend */
4030 if (add_symbolP == NULL || add_symbol_segment == absolute_section)
4032 if (add_symbolP != NULL)
4034 add_number += S_GET_VALUE (add_symbolP);
4036 fixP->fx_addsy = NULL;
4039 /* It's just -sym. */
4040 if (S_GET_SEGMENT (sub_symbolP) == absolute_section)
4042 add_number -= S_GET_VALUE (sub_symbolP);
4049 as_bad_where (fixP->fx_file, fixP->fx_line,
4050 _("Negative of non-absolute symbol %s"),
4051 S_GET_NAME (sub_symbolP));
4053 add_number -= S_GET_VALUE (sub_symbolP);
4054 } /* not absolute */
4056 /* if sub_symbol is in the same segment that add_symbol
4057 and add_symbol is either in DATA, TEXT, BSS or ABSOLUTE */
4059 else if (S_GET_SEGMENT (sub_symbolP) == add_symbol_segment
4060 && SEG_NORMAL (add_symbol_segment))
4062 /* Difference of 2 symbols from same segment. Can't
4063 make difference of 2 undefineds: 'value' means
4064 something different for N_UNDF. */
4066 /* Makes no sense to use the difference of 2 arbitrary symbols
4067 as the target of a call instruction. */
4070 as_bad_where (fixP->fx_file, fixP->fx_line,
4071 _("callj to difference of 2 symbols"));
4073 #endif /* TC_I960 */
4074 add_number += S_GET_VALUE (add_symbolP) -
4075 S_GET_VALUE (sub_symbolP);
4078 if (!TC_FORCE_RELOCATION (fixP))
4080 fixP->fx_addsy = NULL;
4081 fixP->fx_subsy = NULL;
4083 #ifdef TC_M68K /* is this right? */
4091 /* Different segments in subtraction. */
4092 know (!(S_IS_EXTERNAL (sub_symbolP) && (S_GET_SEGMENT (sub_symbolP) == absolute_section)));
4094 if ((S_GET_SEGMENT (sub_symbolP) == absolute_section))
4096 add_number -= S_GET_VALUE (sub_symbolP);
4099 else if (S_GET_SEGMENT (sub_symbolP) == this_segment_type
4100 #if 0 /* Okay for 68k, at least... */
4105 /* Make it pc-relative. */
4106 add_number += (md_pcrel_from (fixP)
4107 - S_GET_VALUE (sub_symbolP));
4116 as_bad_where (fixP->fx_file, fixP->fx_line,
4117 _("Can't emit reloc {- %s-seg symbol \"%s\"} @ file address %ld."),
4118 segment_name (S_GET_SEGMENT (sub_symbolP)),
4119 S_GET_NAME (sub_symbolP),
4120 (long) (fragP->fr_address + where));
4123 } /* if sub_symbolP */
4127 if (add_symbol_segment == this_segment_type && pcrel)
4130 * This fixup was made when the symbol's segment was
4131 * SEG_UNKNOWN, but it is now in the local segment.
4132 * So we know how to do the address without relocation.
4135 /* reloc_callj() may replace a 'call' with a 'calls' or a 'bal',
4136 * in which cases it modifies *fixP as appropriate. In the case
4137 * of a 'calls', no further work is required, and *fixP has been
4138 * set up to make the rest of the code below a no-op.
4141 #endif /* TC_I960 */
4143 add_number += S_GET_VALUE (add_symbolP);
4144 add_number -= md_pcrel_from (fixP);
4147 add_number -= segP->scnhdr.s_vaddr;
4148 if defined (TC_I386) || defined (TE_LYNX). I now
4149 think that was an error propagated from the case when
4150 we are going to emit the relocation. If we are not
4151 going to emit the relocation, then we just want to
4152 set add_number to the difference between the symbols.
4153 This is a case that would only arise when there is a
4154 PC relative reference from a section other than .text
4155 to a symbol defined in the same section, and the
4156 reference is not relaxed. Since jump instructions on
4157 the i386 are relaxed, this could only arise with a
4158 call instruction. */
4160 pcrel = 0; /* Lie. Don't want further pcrel processing. */
4161 if (!TC_FORCE_RELOCATION (fixP))
4163 fixP->fx_addsy = NULL;
4169 switch (add_symbol_segment)
4171 case absolute_section:
4173 reloc_callj (fixP); /* See comment about reloc_callj() above*/
4174 #endif /* TC_I960 */
4175 add_number += S_GET_VALUE (add_symbolP);
4178 if (!TC_FORCE_RELOCATION (fixP))
4180 fixP->fx_addsy = NULL;
4187 #if defined(TC_A29K) || (defined(TE_PE) && defined(TC_I386)) || defined(TC_M88K)
4188 /* This really should be handled in the linker, but
4189 backward compatibility forbids. */
4190 add_number += S_GET_VALUE (add_symbolP);
4192 add_number += S_GET_VALUE (add_symbolP) +
4193 segment_info[S_GET_SEGMENT (add_symbolP)].scnhdr.s_paddr;
4199 if ((int) fixP->fx_bit_fixP == 13)
4201 /* This is a COBR instruction. They have only a
4202 * 13-bit displacement and are only to be used
4203 * for local branches: flag as error, don't generate
4206 as_bad_where (fixP->fx_file, fixP->fx_line,
4207 _("can't use COBR format with external label"));
4208 fixP->fx_addsy = NULL;
4212 #endif /* TC_I960 */
4213 #if ((defined (TC_I386) || defined (TE_LYNX) || defined (TE_AUX)) && !defined(TE_PE)) || defined (COFF_COMMON_ADDEND)
4214 /* 386 COFF uses a peculiar format in which the
4215 value of a common symbol is stored in the .text
4216 segment (I've checked this on SVR3.2 and SCO
4217 3.2.2) Ian Taylor <ian@cygnus.com>. */
4218 /* This is also true for 68k COFF on sysv machines
4219 (Checked on Motorola sysv68 R3V6 and R3V7.1, and also on
4220 UNIX System V/M68000, Release 1.0 from ATT/Bell Labs)
4221 Philippe De Muyter <phdm@info.ucl.ac.be>. */
4222 if (S_IS_COMMON (add_symbolP))
4223 add_number += S_GET_VALUE (add_symbolP);
4228 } /* switch on symbol seg */
4229 } /* if not in local seg */
4230 } /* if there was a + symbol */
4234 #if !defined(TC_M88K) && !(defined(TE_PE) && defined(TC_I386)) && !defined(TC_A29K)
4235 /* This adjustment is not correct on the m88k, for which the
4236 linker does all the computation. */
4237 add_number -= md_pcrel_from (fixP);
4239 if (add_symbolP == 0)
4241 fixP->fx_addsy = &abs_symbol;
4242 } /* if there's an add_symbol */
4243 #if defined (TC_I386) || defined (TE_LYNX) || defined (TC_I960) || defined (TC_M68K)
4244 /* On the 386 we must adjust by the segment vaddr as well.
4247 I changed the i960 to work this way as well. This is
4248 compatible with the current GNU linker behaviour. I do
4249 not know what other i960 COFF assemblers do. This is not
4250 a common case: normally, only assembler code will contain
4251 a PC relative reloc, and only branches which do not
4252 originate in the .text section will have a non-zero
4255 I changed the m68k to work this way as well. This will
4256 break existing PC relative relocs from sections which do
4257 not start at address 0, but it will make ld -r work.
4258 Ian Taylor, 4 Oct 96. */
4260 add_number -= segP->scnhdr.s_vaddr;
4264 #ifdef MD_APPLY_FIX3
4265 md_apply_fix3 (fixP, (valueT *) &add_number, this_segment_type);
4267 md_apply_fix (fixP, add_number);
4270 if (!fixP->fx_bit_fixP && ! fixP->fx_no_overflow)
4273 /* The m88k uses the offset field of the reloc to get around
4276 && ((add_number & ~0xFF)
4277 || (fixP->fx_signed && (add_number & 0x80)))
4278 && ((add_number & ~0xFF) != (-1 & ~0xFF)
4279 || (add_number & 0x80) == 0))
4281 && ((add_number & ~0xFFFF)
4282 || (fixP->fx_signed && (add_number & 0x8000)))
4283 && ((add_number & ~0xFFFF) != (-1 & ~0xFFFF)
4284 || (add_number & 0x8000) == 0)))
4286 as_bad_where (fixP->fx_file, fixP->fx_line,
4287 _("Value of %ld too large for field of %d bytes at 0x%lx"),
4288 (long) add_number, size,
4289 (unsigned long) (fragP->fr_address + where));
4292 #ifdef WARN_SIGNED_OVERFLOW_WORD
4293 /* Warn if a .word value is too large when treated as a
4294 signed number. We already know it is not too negative.
4295 This is to catch over-large switches generated by gcc on
4297 if (!flag_signed_overflow_ok
4299 && add_number > 0x7fff)
4300 as_bad_where (fixP->fx_file, fixP->fx_line,
4301 _("Signed .word overflow; switch may be too large; %ld at 0x%lx"),
4303 (unsigned long) (fragP->fr_address + where));
4305 } /* not a bit fix */
4306 } /* For each fixS in this segment. */
4307 } /* fixup_segment() */
4311 /* The first entry in a .stab section is special. */
4314 obj_coff_init_stab_section (seg)
4320 unsigned int stroff;
4322 /* Make space for this first symbol. */
4326 as_where (&file, (unsigned int *) NULL);
4327 stabstr_name = (char *) alloca (strlen (segment_info[seg].name) + 4);
4328 strcpy (stabstr_name, segment_info[seg].name);
4329 strcat (stabstr_name, "str");
4330 stroff = get_stab_string_offset (file, stabstr_name);
4332 md_number_to_chars (p, stroff, 4);
4335 /* Fill in the counts in the first entry in a .stab section. */
4338 adjust_stab_section(abfd, seg)
4342 segT stabstrseg = SEG_UNKNOWN;
4343 const char *secname, *name2;
4346 int i, strsz = 0, nsyms;
4347 fragS *frag = segment_info[seg].frchainP->frch_root;
4349 /* Look for the associated string table section. */
4351 secname = segment_info[seg].name;
4352 name = (char *) alloca (strlen (secname) + 4);
4353 strcpy (name, secname);
4354 strcat (name, "str");
4356 for (i = SEG_E0; i < SEG_UNKNOWN; i++)
4358 name2 = segment_info[i].name;
4359 if (name2 != NULL && strncmp(name2, name, 8) == 0)
4366 /* If we found the section, get its size. */
4367 if (stabstrseg != SEG_UNKNOWN)
4368 strsz = size_section (abfd, stabstrseg);
4370 nsyms = size_section (abfd, seg) / 12 - 1;
4372 /* Look for the first frag of sufficient size for the initial stab
4373 symbol, and collect a pointer to it. */
4374 while (frag && frag->fr_fix < 12)
4375 frag = frag->fr_next;
4377 p = frag->fr_literal;
4380 /* Write in the number of stab symbols and the size of the string
4382 bfd_h_put_16 (abfd, (bfd_vma) nsyms, (bfd_byte *) p + 6);
4383 bfd_h_put_32 (abfd, (bfd_vma) strsz, (bfd_byte *) p + 8);
4386 #endif /* not BFD_ASSEMBLER */
4388 const pseudo_typeS obj_pseudo_table[] =
4390 {"def", obj_coff_def, 0},
4391 {"dim", obj_coff_dim, 0},
4392 {"endef", obj_coff_endef, 0},
4393 {"line", obj_coff_line, 0},
4394 {"ln", obj_coff_ln, 0},
4395 {"appline", obj_coff_ln, 1},
4396 {"scl", obj_coff_scl, 0},
4397 {"size", obj_coff_size, 0},
4398 {"tag", obj_coff_tag, 0},
4399 {"type", obj_coff_type, 0},
4400 {"val", obj_coff_val, 0},
4401 {"section", obj_coff_section, 0},
4402 {"sect", obj_coff_section, 0},
4403 /* FIXME: We ignore the MRI short attribute. */
4404 {"section.s", obj_coff_section, 0},
4405 {"sect.s", obj_coff_section, 0},
4406 /* We accept the .bss directive for backward compatibility with
4407 earlier versions of gas. */
4408 {"bss", obj_coff_bss, 0},
4409 {"weak", obj_coff_weak, 0},
4410 #ifndef BFD_ASSEMBLER
4411 {"use", obj_coff_section, 0},
4412 {"text", obj_coff_text, 0},
4413 {"data", obj_coff_data, 0},
4414 {"lcomm", obj_coff_lcomm, 0},
4415 {"ident", obj_coff_ident, 0},
4417 {"optim", s_ignore, 0}, /* For sun386i cc (?) */
4418 {"ident", s_ignore, 0}, /* we don't yet handle this. */
4420 {"version", s_ignore, 0},
4421 {"ABORT", s_abort, 0},
4423 /* The m88k uses sdef instead of def. */
4424 {"sdef", obj_coff_def, 0},
4426 {NULL, NULL, 0} /* end sentinel */
4427 }; /* obj_pseudo_table */
4429 #ifdef BFD_ASSEMBLER
4431 /* Support for a COFF emulation. */
4436 pop_insert (obj_pseudo_table);
4440 coff_sec_sym_ok_for_reloc (sec)
4452 const struct format_ops coff_format_ops =
4454 bfd_target_coff_flavour,
4459 coff_frob_file_after_relocs,
4464 obj_generate_asm_lineno,
4473 coff_sec_sym_ok_for_reloc,
4480 coff_obj_read_begin_hook,
4481 coff_obj_symbol_new_hook,