1 /* coff object file format
2 Copyright (C) 1989, 90, 91, 92, 93, 94, 95, 1996
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
19 the Free Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
25 /* I think this is probably always correct. */
26 #ifndef KEEP_RELOC_INFO
27 #define KEEP_RELOC_INFO
31 /* structure used to keep the filenames which
32 are too long around so that we can stick them
33 into the string table */
37 struct filename_list *next;
40 static struct filename_list *filename_list_head;
41 static struct filename_list *filename_list_tail;
43 const char *s_get_name PARAMS ((symbolS * s));
44 static symbolS *def_symbol_in_progress;
50 unsigned long chunk_size;
51 unsigned long element_size;
54 unsigned long pointer;
59 stack_init (chunk_size, element_size)
60 unsigned long chunk_size;
61 unsigned long element_size;
65 st = (stack *) malloc (sizeof (stack));
68 st->data = malloc (chunk_size);
75 st->size = chunk_size;
76 st->chunk_size = chunk_size;
77 st->element_size = element_size;
82 /* Not currently used. */
93 stack_push (st, element)
97 if (st->pointer + st->element_size >= st->size)
99 st->size += st->chunk_size;
100 if ((st->data = xrealloc (st->data, st->size)) == (char *) 0)
103 memcpy (st->data + st->pointer, element, st->element_size);
104 st->pointer += st->element_size;
105 return st->data + st->pointer;
112 if (st->pointer < st->element_size)
117 st->pointer -= st->element_size;
118 return st->data + st->pointer;
122 * Maintain a list of the tagnames of the structres.
125 static struct hash_control *tag_hash;
130 tag_hash = hash_new ();
134 tag_insert (name, symbolP)
138 const char *error_string;
140 if ((error_string = hash_jam (tag_hash, name, (char *) symbolP)))
142 as_fatal ("Inserting \"%s\" into structure table failed: %s",
151 #ifdef STRIP_UNDERSCORE
154 #endif /* STRIP_UNDERSCORE */
155 return (symbolS *) hash_find (tag_hash, name);
159 tag_find_or_make (name)
164 if ((symbolP = tag_find (name)) == NULL)
166 symbolP = symbol_new (name, undefined_section,
167 0, &zero_address_frag);
169 tag_insert (S_GET_NAME (symbolP), symbolP);
171 symbol_table_insert (symbolP);
182 static void SA_SET_SYM_TAGNDX PARAMS ((symbolS *, symbolS *));
184 #define GET_FILENAME_STRING(X) \
185 ((char*)(&((X)->sy_symbol.ost_auxent->x_file.x_n.x_offset))[1])
189 fetch_coff_debug_section ()
191 static segT debug_section;
195 s = bfd_make_debug_symbol (stdoutput, (char *) 0, 0);
197 debug_section = s->section;
199 return debug_section;
203 SA_SET_SYM_ENDNDX (sym, val)
207 combined_entry_type *entry, *p;
209 entry = &coffsymbol (sym->bsym)->native[1];
210 p = coffsymbol (val->bsym)->native;
211 entry->u.auxent.x_sym.x_fcnary.x_fcn.x_endndx.p = p;
216 SA_SET_SYM_TAGNDX (sym, val)
220 combined_entry_type *entry, *p;
222 entry = &coffsymbol (sym->bsym)->native[1];
223 p = coffsymbol (val->bsym)->native;
224 entry->u.auxent.x_sym.x_tagndx.p = p;
229 S_GET_DATA_TYPE (sym)
232 return coffsymbol (sym->bsym)->native->u.syment.n_type;
236 S_SET_DATA_TYPE (sym, val)
240 coffsymbol (sym->bsym)->native->u.syment.n_type = val;
245 S_GET_STORAGE_CLASS (sym)
248 return coffsymbol (sym->bsym)->native->u.syment.n_sclass;
252 S_SET_STORAGE_CLASS (sym, val)
256 coffsymbol (sym->bsym)->native->u.syment.n_sclass = val;
260 /* Merge a debug symbol containing debug information into a normal symbol. */
263 c_symbol_merge (debug, normal)
267 S_SET_DATA_TYPE (normal, S_GET_DATA_TYPE (debug));
268 S_SET_STORAGE_CLASS (normal, S_GET_STORAGE_CLASS (debug));
270 if (S_GET_NUMBER_AUXILIARY (debug) > S_GET_NUMBER_AUXILIARY (normal))
271 /* take the most we have */
272 S_SET_NUMBER_AUXILIARY (normal, S_GET_NUMBER_AUXILIARY (debug));
274 if (S_GET_NUMBER_AUXILIARY (debug) > 0)
276 /* Move all the auxiliary information. */
277 /* @@ How many fields do we want to preserve? Would it make more
278 sense to pick and choose those we want to copy? Should look
279 into this further.... [raeburn:19920512.2209EST] */
281 linenos = coffsymbol (normal->bsym)->lineno;
282 memcpy ((char *) &coffsymbol (normal->bsym)->native,
283 (char *) &coffsymbol (debug->bsym)->native,
284 S_GET_NUMBER_AUXILIARY(debug) * AUXESZ);
285 coffsymbol (normal->bsym)->lineno = linenos;
288 /* Move the debug flags. */
289 SF_SET_DEBUG_FIELD (normal, SF_GET_DEBUG_FIELD (debug));
292 static symbolS *previous_file_symbol;
294 c_dot_file_symbol (filename)
299 symbolP = symbol_new (filename, bfd_abs_section_ptr, 0, &zero_address_frag);
301 S_SET_STORAGE_CLASS (symbolP, C_FILE);
302 S_SET_NUMBER_AUXILIARY (symbolP, 1);
304 symbolP->bsym->flags = BSF_DEBUGGING;
311 listing_source_file (filename);
316 S_SET_VALUE (symbolP, (long) previous_file_symbol);
318 previous_file_symbol = symbolP;
320 /* Make sure that the symbol is first on the symbol chain */
321 if (symbol_rootP != symbolP)
323 if (symbolP == symbol_lastP)
325 symbol_lastP = symbol_lastP->sy_previous;
326 } /* if it was the last thing on the list */
328 symbol_remove (symbolP, &symbol_rootP, &symbol_lastP);
329 symbol_insert (symbolP, symbol_rootP, &symbol_rootP, &symbol_lastP);
330 symbol_rootP = symbolP;
331 } /* if not first on the list */
335 * Build a 'section static' symbol.
339 c_section_symbol (name, value, length, nreloc, nlnno)
343 unsigned short nreloc;
344 unsigned short nlnno;
348 symbolP = symbol_new (name,
357 S_SET_STORAGE_CLASS (symbolP, C_STAT);
358 S_SET_NUMBER_AUXILIARY (symbolP, 1);
360 SA_SET_SCN_SCNLEN (symbolP, length);
361 SA_SET_SCN_NRELOC (symbolP, nreloc);
362 SA_SET_SCN_NLINNO (symbolP, nlnno);
364 SF_SET_STATICS (symbolP);
366 return (char *) symbolP;
369 /* Line number handling */
372 struct line_no *next;
379 /* Symbol of last function, which we should hang line#s off of. */
380 static symbolS *line_fsym;
382 #define in_function() (line_fsym != 0)
383 #define clear_function() (line_fsym = 0)
384 #define set_function(F) (line_fsym = (F), coff_add_linesym (F))
388 obj_symbol_new_hook (symbolP)
391 char underscore = 0; /* Symbol has leading _ */
394 long sz = (OBJ_COFF_MAX_AUXENTRIES + 1) * sizeof (combined_entry_type);
395 char *s = (char *) bfd_alloc_by_size_t (stdoutput, sz);
397 coffsymbol (symbolP->bsym)->native = (combined_entry_type *) s;
399 S_SET_DATA_TYPE (symbolP, T_NULL);
400 S_SET_STORAGE_CLASS (symbolP, 0);
401 S_SET_NUMBER_AUXILIARY (symbolP, 0);
403 if (S_IS_STRING (symbolP))
404 SF_SET_STRING (symbolP);
405 if (!underscore && S_IS_LOCAL (symbolP))
406 SF_SET_LOCAL (symbolP);
411 * Handle .ln directives.
414 static symbolS *current_lineno_sym;
415 static struct line_no *line_nos;
416 /* @@ Blindly assume all .ln directives will be in the .text section... */
420 add_lineno (frag, offset, num)
425 struct line_no *new_line = (struct line_no *) bfd_alloc_by_size_t (stdoutput,
426 sizeof (struct line_no));
427 if (!current_lineno_sym)
431 new_line->next = line_nos;
432 new_line->frag = frag;
433 new_line->l.line_number = num;
434 new_line->l.u.offset = offset;
440 coff_add_linesym (sym)
445 coffsymbol (current_lineno_sym->bsym)->lineno = (alent *) line_nos;
449 current_lineno_sym = sym;
453 obj_coff_ln (appline)
458 if (! appline && def_symbol_in_progress != NULL)
460 as_warn (".ln pseudo-op inside .def/.endef: ignored.");
461 demand_empty_rest_of_line ();
465 l = get_absolute_expression ();
468 add_lineno (frag_now, frag_now_fix (), l);
478 l += coff_line_base - 1;
479 listing_source_line (l);
484 demand_empty_rest_of_line ();
490 * Handle .def directives.
492 * One might ask : why can't we symbol_new if the symbol does not
493 * already exist and fill it with debug information. Because of
494 * the C_EFCN special symbol. It would clobber the value of the
495 * function symbol before we have a chance to notice that it is
496 * a C_EFCN. And a second reason is that the code is more clear this
497 * way. (at least I think it is :-).
501 #define SKIP_SEMI_COLON() while (*input_line_pointer++ != ';')
502 #define SKIP_WHITESPACES() while (*input_line_pointer == ' ' || \
503 *input_line_pointer == '\t') \
504 input_line_pointer++;
510 char name_end; /* Char after the end of name */
511 char *symbol_name; /* Name of the debug symbol */
512 char *symbol_name_copy; /* Temporary copy of the name */
513 unsigned int symbol_name_length;
515 if (def_symbol_in_progress != NULL)
517 as_warn (".def pseudo-op used inside of .def/.endef: ignored.");
518 demand_empty_rest_of_line ();
520 } /* if not inside .def/.endef */
524 symbol_name = input_line_pointer;
525 #ifdef STRIP_UNDERSCORE
526 if (symbol_name[0] == '_' && symbol_name[1] != 0)
528 #endif /* STRIP_UNDERSCORE */
530 name_end = get_symbol_end ();
531 symbol_name_length = strlen (symbol_name);
532 symbol_name_copy = xmalloc (symbol_name_length + 1);
533 strcpy (symbol_name_copy, symbol_name);
535 /* Initialize the new symbol */
536 def_symbol_in_progress = symbol_make (symbol_name_copy);
537 def_symbol_in_progress->sy_frag = &zero_address_frag;
538 S_SET_VALUE (def_symbol_in_progress, 0);
540 if (S_IS_STRING (def_symbol_in_progress))
541 SF_SET_STRING (def_symbol_in_progress);
543 *input_line_pointer = name_end;
545 demand_empty_rest_of_line ();
548 unsigned int dim_index;
551 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 = bfd_asymbol_name (def_symbol_in_progress->bsym);
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 */
614 SF_SET_DEBUG (def_symbol_in_progress);
615 S_SET_SEGMENT (def_symbol_in_progress, absolute_section);
621 /* Valid but set somewhere else (s_comm, s_lcomm, colon) */
627 as_warn ("unexpected storage class %d",
628 S_GET_STORAGE_CLASS (def_symbol_in_progress));
630 } /* switch on storage class */
632 /* Now that we have built a debug symbol, try to find if we should
633 merge with an existing symbol or not. If a symbol is C_EFCN or
634 SEG_ABSOLUTE or untagged SEG_DEBUG it never merges. */
636 /* Two cases for functions. Either debug followed by definition or
637 definition followed by debug. For definition first, we will
638 merge the debug symbol into the definition. For debug first, the
639 lineno entry MUST point to the definition function or else it
640 will point off into space when obj_crawl_symbol_chain() merges
641 the debug symbol into the real symbol. Therefor, let's presume
642 the debug symbol is a real function reference. */
644 /* FIXME-SOON If for some reason the definition label/symbol is
645 never seen, this will probably leave an undefined symbol at link
648 if (S_GET_STORAGE_CLASS (def_symbol_in_progress) == C_EFCN
649 || (!strcmp (bfd_get_section_name (stdoutput,
650 S_GET_SEGMENT (def_symbol_in_progress)),
652 && !SF_GET_TAG (def_symbol_in_progress))
653 || S_GET_SEGMENT (def_symbol_in_progress) == absolute_section
654 || (symbolP = symbol_find_base (S_GET_NAME (def_symbol_in_progress), DO_NOT_STRIP)) == NULL)
656 if (def_symbol_in_progress != symbol_lastP)
657 symbol_append (def_symbol_in_progress, symbol_lastP, &symbol_rootP,
662 /* This symbol already exists, merge the newly created symbol
663 into the old one. This is not mandatory. The linker can
664 handle duplicate symbols correctly. But I guess that it save
665 a *lot* of space if the assembly file defines a lot of
668 /* The debug entry (def_symbol_in_progress) is merged into the
669 previous definition. */
671 c_symbol_merge (def_symbol_in_progress, symbolP);
672 /* FIXME-SOON Should *def_symbol_in_progress be free'd? xoxorich. */
673 def_symbol_in_progress = symbolP;
675 if (SF_GET_FUNCTION (def_symbol_in_progress)
676 || SF_GET_TAG (def_symbol_in_progress))
678 /* For functions, and tags, the symbol *must* be where the
679 debug symbol appears. Move the existing symbol to the
681 /* If it already is at the end of the symbol list, do nothing */
682 if (def_symbol_in_progress != symbol_lastP)
684 symbol_remove (def_symbol_in_progress, &symbol_rootP, &symbol_lastP);
685 symbol_append (def_symbol_in_progress, symbol_lastP, &symbol_rootP, &symbol_lastP);
690 if (SF_GET_TAG (def_symbol_in_progress)
691 && symbol_find_base (S_GET_NAME (def_symbol_in_progress), DO_NOT_STRIP) == NULL)
693 tag_insert (S_GET_NAME (def_symbol_in_progress), def_symbol_in_progress);
696 if (SF_GET_FUNCTION (def_symbol_in_progress))
698 know (sizeof (def_symbol_in_progress) <= sizeof (long));
699 set_function (def_symbol_in_progress);
700 SF_SET_PROCESS (def_symbol_in_progress);
704 /* That is, if this is the first time we've seen the
706 symbol_table_insert (def_symbol_in_progress);
707 } /* definition follows debug */
708 } /* Create the line number entry pointing to the function being defined */
710 def_symbol_in_progress = NULL;
711 demand_empty_rest_of_line ();
715 obj_coff_dim (ignore)
720 if (def_symbol_in_progress == NULL)
722 as_warn (".dim pseudo-op used outside of .def/.endef: ignored.");
723 demand_empty_rest_of_line ();
725 } /* if not inside .def/.endef */
727 S_SET_NUMBER_AUXILIARY (def_symbol_in_progress, 1);
729 for (dim_index = 0; dim_index < DIMNUM; dim_index++)
732 SA_SET_SYM_DIMEN (def_symbol_in_progress, dim_index,
733 get_absolute_expression ());
735 switch (*input_line_pointer)
738 input_line_pointer++;
742 as_warn ("badly formed .dim directive ignored");
743 /* intentional fallthrough */
751 demand_empty_rest_of_line ();
755 obj_coff_line (ignore)
760 if (def_symbol_in_progress == NULL)
762 /* Probably stabs-style line? */
767 this_base = get_absolute_expression ();
768 if (!strcmp (".bf", S_GET_NAME (def_symbol_in_progress)))
769 coff_line_base = this_base;
771 S_SET_NUMBER_AUXILIARY (def_symbol_in_progress, 1);
772 SA_SET_SYM_LNNO (def_symbol_in_progress, coff_line_base);
774 demand_empty_rest_of_line ();
777 if (strcmp (".bf", S_GET_NAME (def_symbol_in_progress)) == 0)
782 listing_source_line ((unsigned int) coff_line_base);
788 obj_coff_size (ignore)
791 if (def_symbol_in_progress == NULL)
793 as_warn (".size pseudo-op used outside of .def/.endef ignored.");
794 demand_empty_rest_of_line ();
796 } /* if not inside .def/.endef */
798 S_SET_NUMBER_AUXILIARY (def_symbol_in_progress, 1);
799 SA_SET_SYM_SIZE (def_symbol_in_progress, get_absolute_expression ());
800 demand_empty_rest_of_line ();
804 obj_coff_scl (ignore)
807 if (def_symbol_in_progress == NULL)
809 as_warn (".scl pseudo-op used outside of .def/.endef ignored.");
810 demand_empty_rest_of_line ();
812 } /* if not inside .def/.endef */
814 S_SET_STORAGE_CLASS (def_symbol_in_progress, get_absolute_expression ());
815 demand_empty_rest_of_line ();
819 obj_coff_tag (ignore)
825 if (def_symbol_in_progress == NULL)
827 as_warn (".tag pseudo-op used outside of .def/.endef ignored.");
828 demand_empty_rest_of_line ();
832 S_SET_NUMBER_AUXILIARY (def_symbol_in_progress, 1);
833 symbol_name = input_line_pointer;
834 name_end = get_symbol_end ();
836 /* Assume that the symbol referred to by .tag is always defined.
837 This was a bad assumption. I've added find_or_make. xoxorich. */
838 SA_SET_SYM_TAGNDX (def_symbol_in_progress,
839 tag_find_or_make (symbol_name));
840 if (SA_GET_SYM_TAGNDX (def_symbol_in_progress) == 0L)
842 as_warn ("tag not found for .tag %s", symbol_name);
845 SF_SET_TAGGED (def_symbol_in_progress);
846 *input_line_pointer = name_end;
848 demand_empty_rest_of_line ();
852 obj_coff_type (ignore)
855 if (def_symbol_in_progress == NULL)
857 as_warn (".type pseudo-op used outside of .def/.endef ignored.");
858 demand_empty_rest_of_line ();
860 } /* if not inside .def/.endef */
862 S_SET_DATA_TYPE (def_symbol_in_progress, get_absolute_expression ());
864 if (ISFCN (S_GET_DATA_TYPE (def_symbol_in_progress)) &&
865 S_GET_STORAGE_CLASS (def_symbol_in_progress) != C_TPDEF)
867 SF_SET_FUNCTION (def_symbol_in_progress);
868 } /* is a function */
870 demand_empty_rest_of_line ();
874 obj_coff_val (ignore)
877 if (def_symbol_in_progress == NULL)
879 as_warn (".val pseudo-op used outside of .def/.endef ignored.");
880 demand_empty_rest_of_line ();
882 } /* if not inside .def/.endef */
884 if (is_name_beginner (*input_line_pointer))
886 char *symbol_name = input_line_pointer;
887 char name_end = get_symbol_end ();
889 if (!strcmp (symbol_name, "."))
891 def_symbol_in_progress->sy_frag = frag_now;
892 S_SET_VALUE (def_symbol_in_progress, (valueT) frag_now_fix ());
893 /* If the .val is != from the .def (e.g. statics) */
895 else if (strcmp (S_GET_NAME (def_symbol_in_progress), symbol_name))
897 def_symbol_in_progress->sy_value.X_op = O_symbol;
898 def_symbol_in_progress->sy_value.X_add_symbol =
899 symbol_find_or_make (symbol_name);
900 def_symbol_in_progress->sy_value.X_op_symbol = NULL;
901 def_symbol_in_progress->sy_value.X_add_number = 0;
903 /* If the segment is undefined when the forward reference is
904 resolved, then copy the segment id from the forward
906 SF_SET_GET_SEGMENT (def_symbol_in_progress);
908 /* Otherwise, it is the name of a non debug symbol and its value will be calculated later. */
909 *input_line_pointer = name_end;
913 S_SET_VALUE (def_symbol_in_progress, get_absolute_expression ());
914 } /* if symbol based */
916 demand_empty_rest_of_line ();
920 obj_read_begin_hook ()
922 /* These had better be the same. Usually 18 bytes. */
924 know (sizeof (SYMENT) == sizeof (AUXENT));
925 know (SYMESZ == AUXESZ);
931 symbolS *coff_last_function;
934 coff_frob_symbol (symp, punt)
938 static symbolS *last_tagP;
939 static stack *block_stack;
940 static symbolS *set_end;
941 symbolS *next_set_end = NULL;
943 if (symp == &abs_symbol)
949 if (current_lineno_sym)
950 coff_add_linesym ((symbolS *) 0);
953 block_stack = stack_init (512, sizeof (symbolS*));
955 if (!S_IS_DEFINED (symp) && S_GET_STORAGE_CLASS (symp) != C_STAT)
956 S_SET_STORAGE_CLASS (symp, C_EXT);
958 if (!SF_GET_DEBUG (symp))
961 if (!SF_GET_LOCAL (symp)
962 && (real = symbol_find_base (S_GET_NAME (symp), DO_NOT_STRIP))
965 c_symbol_merge (symp, real);
968 if (!S_IS_DEFINED (symp) && !SF_GET_LOCAL (symp))
970 assert (S_GET_VALUE (symp) == 0);
971 S_SET_EXTERNAL (symp);
973 else if (S_GET_STORAGE_CLASS (symp) == C_NULL)
975 if (S_GET_SEGMENT (symp) == text_section
976 && symp != seg_info (text_section)->sym)
977 S_SET_STORAGE_CLASS (symp, C_LABEL);
979 S_SET_STORAGE_CLASS (symp, C_STAT);
981 if (SF_GET_PROCESS (symp))
983 if (S_GET_STORAGE_CLASS (symp) == C_BLOCK)
985 if (!strcmp (S_GET_NAME (symp), ".bb"))
986 stack_push (block_stack, (char *) &symp);
990 begin = *(symbolS **) stack_pop (block_stack);
992 as_warn ("mismatched .eb");
994 next_set_end = begin;
997 if (coff_last_function == 0 && SF_GET_FUNCTION (symp))
999 union internal_auxent *auxp;
1000 coff_last_function = symp;
1001 if (S_GET_NUMBER_AUXILIARY (symp) < 1)
1002 S_SET_NUMBER_AUXILIARY (symp, 1);
1003 auxp = &coffsymbol (symp->bsym)->native[1].u.auxent;
1004 memset (auxp->x_sym.x_fcnary.x_ary.x_dimen, 0,
1005 sizeof (auxp->x_sym.x_fcnary.x_ary.x_dimen));
1007 if (S_GET_STORAGE_CLASS (symp) == C_EFCN)
1009 if (coff_last_function == 0)
1010 as_fatal ("C_EFCN symbol out of scope");
1011 SA_SET_SYM_FSIZE (coff_last_function,
1012 (long) (S_GET_VALUE (symp)
1013 - S_GET_VALUE (coff_last_function)));
1014 next_set_end = coff_last_function;
1015 coff_last_function = 0;
1018 else if (SF_GET_TAG (symp))
1020 else if (S_GET_STORAGE_CLASS (symp) == C_EOS)
1021 next_set_end = last_tagP;
1022 else if (S_GET_STORAGE_CLASS (symp) == C_FILE)
1024 if (S_GET_VALUE (symp))
1026 S_SET_VALUE ((symbolS *) S_GET_VALUE (symp), 0xdeadbeef);
1027 S_SET_VALUE (symp, 0);
1030 if (S_IS_EXTERNAL (symp))
1031 S_SET_STORAGE_CLASS (symp, C_EXT);
1032 else if (SF_GET_LOCAL (symp))
1035 if (SF_GET_FUNCTION (symp))
1036 symp->bsym->flags |= BSF_FUNCTION;
1042 /* This is pretty horrible, but we have to set *punt correctly in
1043 order to call SA_SET_SYM_ENDNDX correctly. */
1044 if (! symp->sy_used_in_reloc
1045 && ((symp->bsym->flags & BSF_SECTION_SYM) != 0
1046 || (! S_IS_EXTERNAL (symp)
1047 && ! symp->sy_tc.output
1048 && S_GET_STORAGE_CLASS (symp) != C_FILE)))
1052 if (set_end != (symbolS *) NULL
1055 SA_SET_SYM_ENDNDX (set_end, symp);
1059 if (next_set_end != NULL
1061 set_end = next_set_end;
1063 if (coffsymbol (symp->bsym)->lineno)
1066 struct line_no *lptr;
1069 lptr = (struct line_no *) coffsymbol (symp->bsym)->lineno;
1070 for (i = 0; lptr; lptr = lptr->next)
1072 lptr = (struct line_no *) coffsymbol (symp->bsym)->lineno;
1074 /* We need i entries for line numbers, plus 1 for the first
1075 entry which BFD will override, plus 1 for the last zero
1076 entry (a marker for BFD). */
1077 l = (alent *) bfd_alloc_by_size_t (stdoutput, (i + 2) * sizeof (alent));
1078 coffsymbol (symp->bsym)->lineno = l;
1079 l[i + 1].line_number = 0;
1080 l[i + 1].u.sym = NULL;
1084 lptr->l.u.offset += lptr->frag->fr_address;
1092 coff_adjust_section_syms (abfd, sec, x)
1098 segment_info_type *seginfo = seg_info (sec);
1099 int nlnno, nrelocs = 0;
1101 /* RS/6000 gas creates a .debug section manually in ppc_frob_file in
1102 tc-ppc.c. Do not get confused by it. */
1103 if (seginfo == NULL)
1106 if (!strcmp (sec->name, ".text"))
1107 nlnno = coff_n_line_nos;
1111 /* @@ Hope that none of the fixups expand to more than one reloc
1113 fixS *fixp = seginfo->fix_root;
1116 fixp = fixp->fx_next;
1120 if (bfd_get_section_size_before_reloc (sec) == 0
1121 && nrelocs == 0 && nlnno == 0)
1123 secsym = section_symbol (sec);
1124 SA_SET_SCN_NRELOC (secsym, nrelocs);
1125 SA_SET_SCN_NLINNO (secsym, nlnno);
1131 bfd_map_over_sections (stdoutput, coff_adjust_section_syms, (char*) 0);
1135 * implement the .section pseudo op:
1136 * .section name {, "flags"}
1138 * | +--- optional flags: 'b' for bss
1140 * +-- section name 'l' for lib
1144 * 'd' (apparently m88k for data)
1146 * But if the argument is not a quoted string, treat it as a
1147 * subsegment number.
1151 obj_coff_section (ignore)
1154 /* Strip out the section name */
1170 section_name = input_line_pointer;
1171 c = get_symbol_end ();
1173 name = xmalloc (input_line_pointer - section_name + 1);
1174 strcpy (name, section_name);
1176 *input_line_pointer = c;
1181 flags = SEC_NO_FLAGS;
1183 if (*input_line_pointer == ',')
1185 ++input_line_pointer;
1187 if (*input_line_pointer != '"')
1188 exp = get_absolute_expression ();
1191 ++input_line_pointer;
1192 while (*input_line_pointer != '"'
1193 && ! is_end_of_line[(unsigned char) *input_line_pointer])
1195 switch (*input_line_pointer)
1197 case 'b': flags |= SEC_ALLOC; flags &=~ SEC_LOAD; break;
1198 case 'n': flags &=~ SEC_LOAD; break;
1200 case 'w': flags &=~ SEC_READONLY; break;
1201 case 'x': flags |= SEC_CODE; break;
1203 case 'i': /* STYP_INFO */
1204 case 'l': /* STYP_LIB */
1205 case 'o': /* STYP_OVER */
1206 as_warn ("unsupported section attribute '%c'",
1207 *input_line_pointer);
1211 as_warn("unknown section attribute '%c'",
1212 *input_line_pointer);
1215 ++input_line_pointer;
1217 if (*input_line_pointer == '"')
1218 ++input_line_pointer;
1222 sec = subseg_new (name, (subsegT) exp);
1224 if (flags != SEC_NO_FLAGS)
1226 if (! bfd_set_section_flags (stdoutput, sec, flags))
1227 as_warn ("error setting flags for \"%s\": %s",
1228 bfd_section_name (stdoutput, sec),
1229 bfd_errmsg (bfd_get_error ()));
1234 coff_adjust_symtab ()
1236 if (symbol_rootP == NULL
1237 || S_GET_STORAGE_CLASS (symbol_rootP) != C_FILE)
1239 assert (previous_file_symbol == 0);
1240 c_dot_file_symbol ("fake");
1245 coff_frob_section (sec)
1251 bfd_vma size, n_entries, mask;
1253 /* The COFF back end in BFD requires that all section sizes be
1254 rounded up to multiples of the corresponding section alignments.
1255 Seems kinda silly to me, but that's the way it is. */
1256 size = bfd_get_section_size_before_reloc (sec);
1257 mask = ((bfd_vma) 1 << (bfd_vma) sec->alignment_power) - 1;
1260 size = (size + mask) & ~mask;
1261 bfd_set_section_size (stdoutput, sec, size);
1264 /* If the section size is non-zero, the section symbol needs an aux
1265 entry associated with it, indicating the size. We don't know
1266 all the values yet; coff_frob_symbol will fill them in later. */
1269 symbolS *secsym = section_symbol (sec);
1271 S_SET_STORAGE_CLASS (secsym, C_STAT);
1272 S_SET_NUMBER_AUXILIARY (secsym, 1);
1273 SF_SET_STATICS (secsym);
1274 SA_SET_SCN_SCNLEN (secsym, size);
1277 /* @@ these should be in a "stabs.h" file, or maybe as.h */
1278 #ifndef STAB_SECTION_NAME
1279 #define STAB_SECTION_NAME ".stab"
1281 #ifndef STAB_STRING_SECTION_NAME
1282 #define STAB_STRING_SECTION_NAME ".stabstr"
1284 if (strcmp (STAB_STRING_SECTION_NAME, sec->name))
1288 sec = subseg_get (STAB_SECTION_NAME, 0);
1289 /* size is already rounded up, since other section will be listed first */
1290 size = bfd_get_section_size_before_reloc (strsec);
1292 n_entries = bfd_get_section_size_before_reloc (sec) / 12 - 1;
1294 /* Find first non-empty frag. It should be large enough. */
1295 fragp = seg_info (sec)->frchainP->frch_root;
1296 while (fragp && fragp->fr_fix == 0)
1297 fragp = fragp->fr_next;
1298 assert (fragp != 0 && fragp->fr_fix >= 12);
1300 /* Store the values. */
1301 p = fragp->fr_literal;
1302 bfd_h_put_16 (stdoutput, n_entries, (bfd_byte *) p + 6);
1303 bfd_h_put_32 (stdoutput, size, (bfd_byte *) p + 8);
1307 obj_coff_init_stab_section (seg)
1313 unsigned int stroff;
1315 /* Make space for this first symbol. */
1319 as_where (&file, (unsigned int *) NULL);
1320 stabstr_name = (char *) alloca (strlen (seg->name) + 4);
1321 strcpy (stabstr_name, seg->name);
1322 strcat (stabstr_name, "str");
1323 stroff = get_stab_string_offset (file, stabstr_name);
1325 md_number_to_chars (p, stroff, 4);
1334 return ((s == NULL) ? "(NULL)" : S_GET_NAME (s));
1342 for (symbolP = symbol_rootP; symbolP; symbolP = symbol_next (symbolP))
1344 printf("0x%lx: \"%s\" type = %ld, class = %d, segment = %d\n",
1345 (unsigned long) symbolP,
1346 S_GET_NAME(symbolP),
1347 (long) S_GET_DATA_TYPE(symbolP),
1348 S_GET_STORAGE_CLASS(symbolP),
1349 (int) S_GET_SEGMENT(symbolP));
1355 #else /* not BFD_ASSEMBLER */
1358 /* This is needed because we include internal bfd things. */
1362 #include "libcoff.h"
1364 /* The NOP_OPCODE is for the alignment fill value. Fill with nop so
1365 that we can stick sections together without causing trouble. */
1367 #define NOP_OPCODE 0x00
1370 /* The zeroes if symbol name is longer than 8 chars */
1371 #define S_SET_ZEROES(s,v) ((s)->sy_symbol.ost_entry.n_zeroes = (v))
1373 #define MIN(a,b) ((a) < (b)? (a) : (b))
1374 /* This vector is used to turn an internal segment into a section #
1375 suitable for insertion into a coff symbol table
1378 const short seg_N_TYPE[] =
1379 { /* in: segT out: N_TYPE bits */
1391 C_UNDEF_SECTION, /* SEG_UNKNOWN */
1392 C_UNDEF_SECTION, /* SEG_GOOF */
1393 C_UNDEF_SECTION, /* SEG_EXPR */
1394 C_DEBUG_SECTION, /* SEG_DEBUG */
1395 C_NTV_SECTION, /* SEG_NTV */
1396 C_PTV_SECTION, /* SEG_PTV */
1397 C_REGISTER_SECTION, /* SEG_REGISTER */
1400 int function_lineoff = -1; /* Offset in line#s where the last function
1401 started (the odd entry for line #0) */
1403 static symbolS *last_line_symbol;
1405 /* Add 4 to the real value to get the index and compensate the
1406 negatives. This vector is used by S_GET_SEGMENT to turn a coff
1407 section number into a segment number
1409 static symbolS *previous_file_symbol;
1410 void c_symbol_merge ();
1411 static int line_base;
1413 symbolS *c_section_symbol ();
1416 static void fixup_segment PARAMS ((segment_info_type *segP,
1417 segT this_segment_type));
1420 static void fixup_mdeps PARAMS ((fragS *,
1425 static void fill_section PARAMS ((bfd * abfd,
1430 static int c_line_new PARAMS ((symbolS * symbol, long paddr,
1435 static void w_symbols PARAMS ((bfd * abfd, char *where,
1436 symbolS * symbol_rootP));
1438 static void adjust_stab_section PARAMS ((bfd *abfd, segT seg));
1440 static void obj_coff_lcomm PARAMS ((int));
1441 static void obj_coff_text PARAMS ((int));
1442 static void obj_coff_data PARAMS ((int));
1443 static void obj_coff_bss PARAMS ((int));
1444 static void obj_coff_ident PARAMS ((int));
1445 void obj_coff_section PARAMS ((int));
1449 We allow more than just the standard 3 sections, infact, we allow
1450 10 sections, (though the usual three have to be there).
1452 This structure performs the mappings for us:
1463 static const seg_info_type seg_info_off_by_4[N_SEG] =
1494 #define SEG_INFO_FROM_SECTION_NUMBER(x) (seg_info_off_by_4[(x)+4])
1496 static relax_addressT
1497 relax_align (address, alignment)
1498 relax_addressT address;
1501 relax_addressT mask;
1502 relax_addressT new_address;
1504 mask = ~((~0) << alignment);
1505 new_address = (address + mask) & (~mask);
1506 return (new_address - address);
1514 return SEG_INFO_FROM_SECTION_NUMBER (x->sy_symbol.ost_entry.n_scnum).seg_t;
1519 /* calculate the size of the frag chain and fill in the section header
1520 to contain all of it, also fill in the addr of the sections */
1522 size_section (abfd, idx)
1527 unsigned int size = 0;
1528 fragS *frag = segment_info[idx].frchainP->frch_root;
1531 size = frag->fr_address;
1532 if (frag->fr_address != size)
1534 fprintf (stderr, "Out of step\n");
1535 size = frag->fr_address;
1538 switch (frag->fr_type)
1540 #ifdef TC_COFF_SIZEMACHDEP
1541 case rs_machine_dependent:
1542 size += TC_COFF_SIZEMACHDEP (frag);
1546 assert (frag->fr_symbol == 0);
1549 size += frag->fr_fix;
1550 size += frag->fr_offset * frag->fr_var;
1554 size += frag->fr_fix;
1555 size += relax_align (size, frag->fr_offset);
1558 BAD_CASE (frag->fr_type);
1561 frag = frag->fr_next;
1563 segment_info[idx].scnhdr.s_size = size;
1569 count_entries_in_chain (idx)
1572 unsigned int nrelocs;
1575 /* Count the relocations */
1576 fixup_ptr = segment_info[idx].fix_root;
1578 while (fixup_ptr != (fixS *) NULL)
1580 if (TC_COUNT_RELOC (fixup_ptr))
1583 if (fixup_ptr->fx_r_type == RELOC_CONSTH)
1592 fixup_ptr = fixup_ptr->fx_next;
1599 static int compare_external_relocs PARAMS ((const PTR, const PTR));
1601 /* AUX's ld expects relocations to be sorted */
1603 compare_external_relocs (x, y)
1607 struct external_reloc *a = (struct external_reloc *) x;
1608 struct external_reloc *b = (struct external_reloc *) y;
1609 bfd_vma aadr = bfd_getb32 (a->r_vaddr);
1610 bfd_vma badr = bfd_getb32 (b->r_vaddr);
1611 return (aadr < badr ? -1 : badr < aadr ? 1 : 0);
1616 /* output all the relocations for a section */
1618 do_relocs_for (abfd, h, file_cursor)
1621 unsigned long *file_cursor;
1623 unsigned int nrelocs;
1625 unsigned long reloc_start = *file_cursor;
1627 for (idx = SEG_E0; idx < SEG_E9; idx++)
1629 if (segment_info[idx].scnhdr.s_name[0])
1631 struct external_reloc *ext_ptr;
1632 struct external_reloc *external_reloc_vec;
1633 unsigned int external_reloc_size;
1634 unsigned int base = segment_info[idx].scnhdr.s_paddr;
1635 fixS *fix_ptr = segment_info[idx].fix_root;
1636 nrelocs = count_entries_in_chain (idx);
1639 /* Bypass this stuff if no relocs. This also incidentally
1640 avoids a SCO bug, where free(malloc(0)) tends to crash. */
1642 external_reloc_size = nrelocs * RELSZ;
1643 external_reloc_vec =
1644 (struct external_reloc *) malloc (external_reloc_size);
1646 ext_ptr = external_reloc_vec;
1648 /* Fill in the internal coff style reloc struct from the
1649 internal fix list. */
1652 struct internal_reloc intr;
1654 /* Only output some of the relocations */
1655 if (TC_COUNT_RELOC (fix_ptr))
1657 #ifdef TC_RELOC_MANGLE
1658 TC_RELOC_MANGLE (&segment_info[idx], fix_ptr, &intr,
1663 symbolS *symbol_ptr = fix_ptr->fx_addsy;
1665 intr.r_type = TC_COFF_FIX2RTYPE (fix_ptr);
1667 base + fix_ptr->fx_frag->fr_address + fix_ptr->fx_where;
1669 #ifdef TC_KEEP_FX_OFFSET
1670 intr.r_offset = fix_ptr->fx_offset;
1675 while (symbol_ptr->sy_value.X_op == O_symbol
1676 && (! S_IS_DEFINED (symbol_ptr)
1677 || S_IS_COMMON (symbol_ptr)))
1678 symbol_ptr = symbol_ptr->sy_value.X_add_symbol;
1680 /* Turn the segment of the symbol into an offset. */
1683 dot = segment_info[S_GET_SEGMENT (symbol_ptr)].dot;
1686 intr.r_symndx = dot->sy_number;
1690 intr.r_symndx = symbol_ptr->sy_number;
1700 (void) bfd_coff_swap_reloc_out (abfd, &intr, ext_ptr);
1703 #if defined(TC_A29K)
1705 /* The 29k has a special kludge for the high 16 bit
1706 reloc. Two relocations are emited, R_IHIHALF,
1707 and R_IHCONST. The second one doesn't contain a
1708 symbol, but uses the value for offset. */
1710 if (intr.r_type == R_IHIHALF)
1712 /* now emit the second bit */
1713 intr.r_type = R_IHCONST;
1714 intr.r_symndx = fix_ptr->fx_addnumber;
1715 (void) bfd_coff_swap_reloc_out (abfd, &intr, ext_ptr);
1721 fix_ptr = fix_ptr->fx_next;
1725 /* Sort the reloc table */
1726 qsort ((PTR) external_reloc_vec, nrelocs,
1727 sizeof (struct external_reloc), compare_external_relocs);
1730 /* Write out the reloc table */
1731 bfd_write ((PTR) external_reloc_vec, 1, external_reloc_size,
1733 free (external_reloc_vec);
1735 /* Fill in section header info. */
1736 segment_info[idx].scnhdr.s_relptr = *file_cursor;
1737 *file_cursor += external_reloc_size;
1738 segment_info[idx].scnhdr.s_nreloc = nrelocs;
1743 segment_info[idx].scnhdr.s_relptr = 0;
1747 /* Set relocation_size field in file headers */
1748 H_SET_RELOCATION_SIZE (h, *file_cursor - reloc_start, 0);
1752 /* run through a frag chain and write out the data to go with it, fill
1753 in the scnhdrs with the info on the file postions
1756 fill_section (abfd, h, file_cursor)
1759 unsigned long *file_cursor;
1763 unsigned int paddr = 0;
1765 for (i = SEG_E0; i < SEG_UNKNOWN; i++)
1767 unsigned int offset = 0;
1768 struct internal_scnhdr *s = &(segment_info[i].scnhdr);
1774 fragS *frag = segment_info[i].frchainP->frch_root;
1781 buffer = xmalloc (s->s_size);
1782 s->s_scnptr = *file_cursor;
1784 know (s->s_paddr == paddr);
1786 if (strcmp (s->s_name, ".text") == 0)
1787 s->s_flags |= STYP_TEXT;
1788 else if (strcmp (s->s_name, ".data") == 0)
1789 s->s_flags |= STYP_DATA;
1790 else if (strcmp (s->s_name, ".bss") == 0)
1793 s->s_flags |= STYP_BSS;
1795 /* @@ Should make the i386 and a29k coff targets define
1796 COFF_NOLOAD_PROBLEM, and have only one test here. */
1799 #ifndef COFF_NOLOAD_PROBLEM
1800 /* Apparently the SVR3 linker (and exec syscall) and UDI
1801 mondfe progrem are confused by noload sections. */
1802 s->s_flags |= STYP_NOLOAD;
1807 else if (strcmp (s->s_name, ".lit") == 0)
1808 s->s_flags = STYP_LIT | STYP_TEXT;
1809 else if (strcmp (s->s_name, ".init") == 0)
1810 s->s_flags |= STYP_TEXT;
1811 else if (strcmp (s->s_name, ".fini") == 0)
1812 s->s_flags |= STYP_TEXT;
1813 else if (strncmp (s->s_name, ".comment", 8) == 0)
1814 s->s_flags |= STYP_INFO;
1818 unsigned int fill_size;
1819 switch (frag->fr_type)
1821 case rs_machine_dependent:
1824 memcpy (buffer + frag->fr_address,
1826 (unsigned int) frag->fr_fix);
1827 offset += frag->fr_fix;
1832 assert (frag->fr_symbol == 0);
1839 memcpy (buffer + frag->fr_address,
1841 (unsigned int) frag->fr_fix);
1842 offset += frag->fr_fix;
1845 fill_size = frag->fr_var;
1846 if (fill_size && frag->fr_offset > 0)
1849 unsigned int off = frag->fr_fix;
1850 for (count = frag->fr_offset; count; count--)
1852 if (fill_size + frag->fr_address + off <= s->s_size)
1854 memcpy (buffer + frag->fr_address + off,
1855 frag->fr_literal + frag->fr_fix,
1858 offset += fill_size;
1863 case rs_broken_word:
1868 frag = frag->fr_next;
1873 if (s->s_scnptr != 0)
1875 bfd_write (buffer, s->s_size, 1, abfd);
1876 *file_cursor += s->s_size;
1885 /* Coff file generation & utilities */
1888 coff_header_append (abfd, h)
1896 bfd_seek (abfd, 0, 0);
1898 #ifndef OBJ_COFF_OMIT_OPTIONAL_HEADER
1899 H_SET_MAGIC_NUMBER (h, COFF_MAGIC);
1900 H_SET_VERSION_STAMP (h, 0);
1901 H_SET_ENTRY_POINT (h, 0);
1902 H_SET_TEXT_START (h, segment_info[SEG_E0].frchainP->frch_root->fr_address);
1903 H_SET_DATA_START (h, segment_info[SEG_E1].frchainP->frch_root->fr_address);
1904 H_SET_SIZEOF_OPTIONAL_HEADER (h, bfd_coff_swap_aouthdr_out(abfd, &h->aouthdr,
1906 #else /* defined (OBJ_COFF_OMIT_OPTIONAL_HEADER) */
1907 H_SET_SIZEOF_OPTIONAL_HEADER (h, 0);
1908 #endif /* defined (OBJ_COFF_OMIT_OPTIONAL_HEADER) */
1910 i = bfd_coff_swap_filehdr_out (abfd, &h->filehdr, buffer);
1912 bfd_write (buffer, i, 1, abfd);
1913 bfd_write (buffero, H_GET_SIZEOF_OPTIONAL_HEADER (h), 1, abfd);
1915 for (i = SEG_E0; i < SEG_E9; i++)
1917 if (segment_info[i].scnhdr.s_name[0])
1920 bfd_coff_swap_scnhdr_out (abfd,
1921 &(segment_info[i].scnhdr),
1924 as_bad ("bfd_coff_swap_scnhdr_out failed");
1925 bfd_write (buffer, size, 1, abfd);
1932 symbol_to_chars (abfd, where, symbolP)
1937 unsigned int numaux = symbolP->sy_symbol.ost_entry.n_numaux;
1941 /* Turn any symbols with register attributes into abs symbols */
1942 if (S_GET_SEGMENT (symbolP) == reg_section)
1944 S_SET_SEGMENT (symbolP, absolute_section);
1946 /* At the same time, relocate all symbols to their output value */
1948 val = (segment_info[S_GET_SEGMENT (symbolP)].scnhdr.s_paddr
1949 + S_GET_VALUE (symbolP));
1951 S_SET_VALUE (symbolP, val);
1953 symbolP->sy_symbol.ost_entry.n_value = val;
1955 where += bfd_coff_swap_sym_out (abfd, &symbolP->sy_symbol.ost_entry,
1958 for (i = 0; i < numaux; i++)
1960 where += bfd_coff_swap_aux_out (abfd,
1961 &symbolP->sy_symbol.ost_auxent[i],
1962 S_GET_DATA_TYPE (symbolP),
1963 S_GET_STORAGE_CLASS (symbolP),
1971 obj_symbol_new_hook (symbolP)
1974 char underscore = 0; /* Symbol has leading _ */
1976 /* Effective symbol */
1977 /* Store the pointer in the offset. */
1978 S_SET_ZEROES (symbolP, 0L);
1979 S_SET_DATA_TYPE (symbolP, T_NULL);
1980 S_SET_STORAGE_CLASS (symbolP, 0);
1981 S_SET_NUMBER_AUXILIARY (symbolP, 0);
1982 /* Additional information */
1983 symbolP->sy_symbol.ost_flags = 0;
1984 /* Auxiliary entries */
1985 memset ((char *) &symbolP->sy_symbol.ost_auxent[0], 0, AUXESZ);
1987 if (S_IS_STRING (symbolP))
1988 SF_SET_STRING (symbolP);
1989 if (!underscore && S_IS_LOCAL (symbolP))
1990 SF_SET_LOCAL (symbolP);
1994 * Handle .ln directives.
1998 obj_coff_ln (appline)
2003 if (! appline && def_symbol_in_progress != NULL)
2005 as_warn (".ln pseudo-op inside .def/.endef: ignored.");
2006 demand_empty_rest_of_line ();
2008 } /* wrong context */
2010 l = get_absolute_expression ();
2011 c_line_new (0, frag_now_fix (), l, frag_now);
2020 listing_source_line ((unsigned int) l);
2025 demand_empty_rest_of_line ();
2031 * Handle .def directives.
2033 * One might ask : why can't we symbol_new if the symbol does not
2034 * already exist and fill it with debug information. Because of
2035 * the C_EFCN special symbol. It would clobber the value of the
2036 * function symbol before we have a chance to notice that it is
2037 * a C_EFCN. And a second reason is that the code is more clear this
2038 * way. (at least I think it is :-).
2042 #define SKIP_SEMI_COLON() while (*input_line_pointer++ != ';')
2043 #define SKIP_WHITESPACES() while (*input_line_pointer == ' ' || \
2044 *input_line_pointer == '\t') \
2045 input_line_pointer++;
2051 char name_end; /* Char after the end of name */
2052 char *symbol_name; /* Name of the debug symbol */
2053 char *symbol_name_copy; /* Temporary copy of the name */
2054 unsigned int symbol_name_length;
2056 if (def_symbol_in_progress != NULL)
2058 as_warn (".def pseudo-op used inside of .def/.endef: ignored.");
2059 demand_empty_rest_of_line ();
2061 } /* if not inside .def/.endef */
2063 SKIP_WHITESPACES ();
2065 def_symbol_in_progress = (symbolS *) obstack_alloc (¬es, sizeof (*def_symbol_in_progress));
2066 memset (def_symbol_in_progress, 0, sizeof (*def_symbol_in_progress));
2068 symbol_name = input_line_pointer;
2069 name_end = get_symbol_end ();
2070 symbol_name_length = strlen (symbol_name);
2071 symbol_name_copy = xmalloc (symbol_name_length + 1);
2072 strcpy (symbol_name_copy, symbol_name);
2074 /* Initialize the new symbol */
2075 #ifdef STRIP_UNDERSCORE
2076 S_SET_NAME (def_symbol_in_progress, (*symbol_name_copy == '_'
2077 ? symbol_name_copy + 1
2078 : symbol_name_copy));
2079 #else /* STRIP_UNDERSCORE */
2080 S_SET_NAME (def_symbol_in_progress, symbol_name_copy);
2081 #endif /* STRIP_UNDERSCORE */
2082 /* free(symbol_name_copy); */
2083 def_symbol_in_progress->sy_name_offset = (unsigned long) ~0;
2084 def_symbol_in_progress->sy_number = ~0;
2085 def_symbol_in_progress->sy_frag = &zero_address_frag;
2086 S_SET_VALUE (def_symbol_in_progress, 0);
2088 if (S_IS_STRING (def_symbol_in_progress))
2089 SF_SET_STRING (def_symbol_in_progress);
2091 *input_line_pointer = name_end;
2093 demand_empty_rest_of_line ();
2096 unsigned int dim_index;
2100 obj_coff_endef (ignore)
2103 symbolS *symbolP = 0;
2104 /* DIM BUG FIX sac@cygnus.com */
2106 if (def_symbol_in_progress == NULL)
2108 as_warn (".endef pseudo-op used outside of .def/.endef: ignored.");
2109 demand_empty_rest_of_line ();
2111 } /* if not inside .def/.endef */
2113 /* Set the section number according to storage class. */
2114 switch (S_GET_STORAGE_CLASS (def_symbol_in_progress))
2119 SF_SET_TAG (def_symbol_in_progress);
2120 /* intentional fallthrough */
2123 SF_SET_DEBUG (def_symbol_in_progress);
2124 S_SET_SEGMENT (def_symbol_in_progress, SEG_DEBUG);
2128 SF_SET_LOCAL (def_symbol_in_progress); /* Do not emit this symbol. */
2129 /* intentional fallthrough */
2131 SF_SET_PROCESS (def_symbol_in_progress); /* Will need processing before writing */
2132 /* intentional fallthrough */
2134 S_SET_SEGMENT (def_symbol_in_progress, SEG_E0);
2136 if (strcmp (S_GET_NAME (def_symbol_in_progress), ".bf") == 0)
2138 if (function_lineoff < 0)
2140 fprintf (stderr, "`.bf' symbol without preceding function\n");
2141 } /* missing function symbol */
2142 SA_GET_SYM_LNNOPTR (last_line_symbol) = function_lineoff;
2144 SF_SET_PROCESS (last_line_symbol);
2145 function_lineoff = -1;
2147 /* Value is always set to . */
2148 def_symbol_in_progress->sy_frag = frag_now;
2149 S_SET_VALUE (def_symbol_in_progress, (valueT) frag_now_fix ());
2154 #endif /* C_AUTOARG */
2164 SF_SET_DEBUG (def_symbol_in_progress);
2165 S_SET_SEGMENT (def_symbol_in_progress, absolute_section);
2171 /* Valid but set somewhere else (s_comm, s_lcomm, colon) */
2177 as_warn ("unexpected storage class %d", S_GET_STORAGE_CLASS (def_symbol_in_progress));
2179 } /* switch on storage class */
2181 /* Now that we have built a debug symbol, try to find if we should
2182 merge with an existing symbol or not. If a symbol is C_EFCN or
2183 absolute_section or untagged SEG_DEBUG it never merges. We also
2184 don't merge labels, which are in a different namespace, nor
2185 symbols which have not yet been defined since they are typically
2186 unique, nor do we merge tags with non-tags. */
2188 /* Two cases for functions. Either debug followed by definition or
2189 definition followed by debug. For definition first, we will
2190 merge the debug symbol into the definition. For debug first, the
2191 lineno entry MUST point to the definition function or else it
2192 will point off into space when crawl_symbols() merges the debug
2193 symbol into the real symbol. Therefor, let's presume the debug
2194 symbol is a real function reference. */
2196 /* FIXME-SOON If for some reason the definition label/symbol is
2197 never seen, this will probably leave an undefined symbol at link
2200 if (S_GET_STORAGE_CLASS (def_symbol_in_progress) == C_EFCN
2201 || S_GET_STORAGE_CLASS (def_symbol_in_progress) == C_LABEL
2202 || (S_GET_SEGMENT (def_symbol_in_progress) == SEG_DEBUG
2203 && !SF_GET_TAG (def_symbol_in_progress))
2204 || S_GET_SEGMENT (def_symbol_in_progress) == absolute_section
2205 || def_symbol_in_progress->sy_value.X_op != O_constant
2206 || (symbolP = symbol_find_base (S_GET_NAME (def_symbol_in_progress), DO_NOT_STRIP)) == NULL
2207 || (SF_GET_TAG (def_symbol_in_progress) != SF_GET_TAG (symbolP)))
2209 symbol_append (def_symbol_in_progress, symbol_lastP, &symbol_rootP,
2214 /* This symbol already exists, merge the newly created symbol
2215 into the old one. This is not mandatory. The linker can
2216 handle duplicate symbols correctly. But I guess that it save
2217 a *lot* of space if the assembly file defines a lot of
2220 /* The debug entry (def_symbol_in_progress) is merged into the
2221 previous definition. */
2223 c_symbol_merge (def_symbol_in_progress, symbolP);
2224 /* FIXME-SOON Should *def_symbol_in_progress be free'd? xoxorich. */
2225 def_symbol_in_progress = symbolP;
2227 if (SF_GET_FUNCTION (def_symbol_in_progress)
2228 || SF_GET_TAG (def_symbol_in_progress))
2230 /* For functions, and tags, the symbol *must* be where the
2231 debug symbol appears. Move the existing symbol to the
2233 /* If it already is at the end of the symbol list, do nothing */
2234 if (def_symbol_in_progress != symbol_lastP)
2236 symbol_remove (def_symbol_in_progress, &symbol_rootP,
2238 symbol_append (def_symbol_in_progress, symbol_lastP,
2239 &symbol_rootP, &symbol_lastP);
2240 } /* if not already in place */
2242 } /* normal or mergable */
2244 if (SF_GET_TAG (def_symbol_in_progress)
2245 && symbol_find_base (S_GET_NAME (def_symbol_in_progress), DO_NOT_STRIP) == NULL)
2247 tag_insert (S_GET_NAME (def_symbol_in_progress), def_symbol_in_progress);
2250 if (SF_GET_FUNCTION (def_symbol_in_progress))
2252 know (sizeof (def_symbol_in_progress) <= sizeof (long));
2254 = c_line_new (def_symbol_in_progress, 0, 0, &zero_address_frag);
2256 SF_SET_PROCESS (def_symbol_in_progress);
2258 if (symbolP == NULL)
2260 /* That is, if this is the first time we've seen the
2262 symbol_table_insert (def_symbol_in_progress);
2263 } /* definition follows debug */
2264 } /* Create the line number entry pointing to the function being defined */
2266 def_symbol_in_progress = NULL;
2267 demand_empty_rest_of_line ();
2271 obj_coff_dim (ignore)
2276 if (def_symbol_in_progress == NULL)
2278 as_warn (".dim pseudo-op used outside of .def/.endef: ignored.");
2279 demand_empty_rest_of_line ();
2281 } /* if not inside .def/.endef */
2283 S_SET_NUMBER_AUXILIARY (def_symbol_in_progress, 1);
2285 for (dim_index = 0; dim_index < DIMNUM; dim_index++)
2287 SKIP_WHITESPACES ();
2288 SA_SET_SYM_DIMEN (def_symbol_in_progress, dim_index,
2289 get_absolute_expression ());
2291 switch (*input_line_pointer)
2294 input_line_pointer++;
2298 as_warn ("badly formed .dim directive ignored");
2299 /* intentional fallthrough */
2307 demand_empty_rest_of_line ();
2311 obj_coff_line (ignore)
2317 if (def_symbol_in_progress == NULL)
2323 name = S_GET_NAME (def_symbol_in_progress);
2324 this_base = get_absolute_expression ();
2326 /* Only .bf symbols indicate the use of a new base line number; the
2327 line numbers associated with .ef, .bb, .eb are relative to the
2328 start of the containing function. */
2329 if (!strcmp (".bf", name))
2331 #if 0 /* XXX Can we ever have line numbers going backwards? */
2332 if (this_base > line_base)
2335 line_base = this_base;
2343 listing_source_line ((unsigned int) line_base);
2349 S_SET_NUMBER_AUXILIARY (def_symbol_in_progress, 1);
2350 SA_SET_SYM_LNNO (def_symbol_in_progress, this_base);
2352 demand_empty_rest_of_line ();
2356 obj_coff_size (ignore)
2359 if (def_symbol_in_progress == NULL)
2361 as_warn (".size pseudo-op used outside of .def/.endef ignored.");
2362 demand_empty_rest_of_line ();
2364 } /* if not inside .def/.endef */
2366 S_SET_NUMBER_AUXILIARY (def_symbol_in_progress, 1);
2367 SA_SET_SYM_SIZE (def_symbol_in_progress, get_absolute_expression ());
2368 demand_empty_rest_of_line ();
2372 obj_coff_scl (ignore)
2375 if (def_symbol_in_progress == NULL)
2377 as_warn (".scl pseudo-op used outside of .def/.endef ignored.");
2378 demand_empty_rest_of_line ();
2380 } /* if not inside .def/.endef */
2382 S_SET_STORAGE_CLASS (def_symbol_in_progress, get_absolute_expression ());
2383 demand_empty_rest_of_line ();
2387 obj_coff_tag (ignore)
2393 if (def_symbol_in_progress == NULL)
2395 as_warn (".tag pseudo-op used outside of .def/.endef ignored.");
2396 demand_empty_rest_of_line ();
2400 S_SET_NUMBER_AUXILIARY (def_symbol_in_progress, 1);
2401 symbol_name = input_line_pointer;
2402 name_end = get_symbol_end ();
2404 /* Assume that the symbol referred to by .tag is always defined.
2405 This was a bad assumption. I've added find_or_make. xoxorich. */
2406 SA_SET_SYM_TAGNDX (def_symbol_in_progress,
2407 (long) tag_find_or_make (symbol_name));
2408 if (SA_GET_SYM_TAGNDX (def_symbol_in_progress) == 0L)
2410 as_warn ("tag not found for .tag %s", symbol_name);
2413 SF_SET_TAGGED (def_symbol_in_progress);
2414 *input_line_pointer = name_end;
2416 demand_empty_rest_of_line ();
2420 obj_coff_type (ignore)
2423 if (def_symbol_in_progress == NULL)
2425 as_warn (".type pseudo-op used outside of .def/.endef ignored.");
2426 demand_empty_rest_of_line ();
2428 } /* if not inside .def/.endef */
2430 S_SET_DATA_TYPE (def_symbol_in_progress, get_absolute_expression ());
2432 if (ISFCN (S_GET_DATA_TYPE (def_symbol_in_progress)) &&
2433 S_GET_STORAGE_CLASS (def_symbol_in_progress) != C_TPDEF)
2435 SF_SET_FUNCTION (def_symbol_in_progress);
2436 } /* is a function */
2438 demand_empty_rest_of_line ();
2442 obj_coff_val (ignore)
2445 if (def_symbol_in_progress == NULL)
2447 as_warn (".val pseudo-op used outside of .def/.endef ignored.");
2448 demand_empty_rest_of_line ();
2450 } /* if not inside .def/.endef */
2452 if (is_name_beginner (*input_line_pointer))
2454 char *symbol_name = input_line_pointer;
2455 char name_end = get_symbol_end ();
2457 if (!strcmp (symbol_name, "."))
2459 def_symbol_in_progress->sy_frag = frag_now;
2460 S_SET_VALUE (def_symbol_in_progress, (valueT) frag_now_fix ());
2461 /* If the .val is != from the .def (e.g. statics) */
2463 else if (strcmp (S_GET_NAME (def_symbol_in_progress), symbol_name))
2465 def_symbol_in_progress->sy_value.X_op = O_symbol;
2466 def_symbol_in_progress->sy_value.X_add_symbol =
2467 symbol_find_or_make (symbol_name);
2468 def_symbol_in_progress->sy_value.X_op_symbol = NULL;
2469 def_symbol_in_progress->sy_value.X_add_number = 0;
2471 /* If the segment is undefined when the forward reference is
2472 resolved, then copy the segment id from the forward
2474 SF_SET_GET_SEGMENT (def_symbol_in_progress);
2476 /* FIXME: gcc can generate address expressions
2477 here in unusual cases (search for "obscure"
2478 in sdbout.c). We just ignore the offset
2479 here, thus generating incorrect debugging
2480 information. We ignore the rest of the
2483 /* Otherwise, it is the name of a non debug symbol and
2484 its value will be calculated later. */
2485 *input_line_pointer = name_end;
2487 /* FIXME: this is to avoid an error message in the
2488 FIXME case mentioned just above. */
2489 while (! is_end_of_line[(unsigned char) *input_line_pointer])
2490 ++input_line_pointer;
2494 S_SET_VALUE (def_symbol_in_progress,
2495 (valueT) get_absolute_expression ());
2496 } /* if symbol based */
2498 demand_empty_rest_of_line ();
2502 obj_read_begin_hook ()
2504 /* These had better be the same. Usually 18 bytes. */
2506 know (sizeof (SYMENT) == sizeof (AUXENT));
2507 know (SYMESZ == AUXESZ);
2512 /* This function runs through the symbol table and puts all the
2513 externals onto another chain */
2515 /* The chain of globals. */
2516 symbolS *symbol_globalP;
2517 symbolS *symbol_global_lastP;
2519 /* The chain of externals */
2520 symbolS *symbol_externP;
2521 symbolS *symbol_extern_lastP;
2524 symbolS *last_functionP;
2531 unsigned int symbol_number = 0;
2532 unsigned int last_file_symno = 0;
2534 struct filename_list *filename_list_scan = filename_list_head;
2536 for (symbolP = symbol_rootP;
2538 symbolP = symbolP ? symbol_next (symbolP) : symbol_rootP)
2540 if (symbolP->sy_mri_common)
2542 if (S_GET_STORAGE_CLASS (symbolP) == C_EXT)
2543 as_bad ("%s: global symbols not supported in common sections",
2544 S_GET_NAME (symbolP));
2545 symbol_remove (symbolP, &symbol_rootP, &symbol_lastP);
2549 if (!SF_GET_DEBUG (symbolP))
2551 /* Debug symbols do not need all this rubbish */
2552 symbolS *real_symbolP;
2554 /* L* and C_EFCN symbols never merge. */
2555 if (!SF_GET_LOCAL (symbolP)
2556 && S_GET_STORAGE_CLASS (symbolP) != C_LABEL
2557 && symbolP->sy_value.X_op == O_constant
2558 && (real_symbolP = symbol_find_base (S_GET_NAME (symbolP), DO_NOT_STRIP))
2559 && real_symbolP != symbolP)
2561 /* FIXME-SOON: where do dups come from?
2562 Maybe tag references before definitions? xoxorich. */
2563 /* Move the debug data from the debug symbol to the
2564 real symbol. Do NOT do the oposite (i.e. move from
2565 real symbol to debug symbol and remove real symbol from the
2566 list.) Because some pointers refer to the real symbol
2567 whereas no pointers refer to the debug symbol. */
2568 c_symbol_merge (symbolP, real_symbolP);
2569 /* Replace the current symbol by the real one */
2570 /* The symbols will never be the last or the first
2571 because : 1st symbol is .file and 3 last symbols are
2572 .text, .data, .bss */
2573 symbol_remove (real_symbolP, &symbol_rootP, &symbol_lastP);
2574 symbol_insert (real_symbolP, symbolP, &symbol_rootP, &symbol_lastP);
2575 symbol_remove (symbolP, &symbol_rootP, &symbol_lastP);
2576 symbolP = real_symbolP;
2577 } /* if not local but dup'd */
2579 if (flag_readonly_data_in_text && (S_GET_SEGMENT (symbolP) == SEG_E1))
2581 S_SET_SEGMENT (symbolP, SEG_E0);
2582 } /* push data into text */
2584 resolve_symbol_value (symbolP);
2586 if (S_GET_STORAGE_CLASS (symbolP) == C_NULL)
2588 if (!S_IS_DEFINED (symbolP) && !SF_GET_LOCAL (symbolP))
2590 S_SET_EXTERNAL (symbolP);
2592 else if (S_GET_SEGMENT (symbolP) == SEG_E0)
2594 S_SET_STORAGE_CLASS (symbolP, C_LABEL);
2598 S_SET_STORAGE_CLASS (symbolP, C_STAT);
2602 /* Mainly to speed up if not -g */
2603 if (SF_GET_PROCESS (symbolP))
2605 /* Handle the nested blocks auxiliary info. */
2606 if (S_GET_STORAGE_CLASS (symbolP) == C_BLOCK)
2608 if (!strcmp (S_GET_NAME (symbolP), ".bb"))
2609 stack_push (block_stack, (char *) &symbolP);
2612 register symbolS *begin_symbolP;
2613 begin_symbolP = *(symbolS **) stack_pop (block_stack);
2614 if (begin_symbolP == (symbolS *) 0)
2615 as_warn ("mismatched .eb");
2617 SA_SET_SYM_ENDNDX (begin_symbolP, symbol_number + 2);
2620 /* If we are able to identify the type of a function, and we
2621 are out of a function (last_functionP == 0) then, the
2622 function symbol will be associated with an auxiliary
2624 if (last_functionP == (symbolS *) 0 &&
2625 SF_GET_FUNCTION (symbolP))
2627 last_functionP = symbolP;
2629 if (S_GET_NUMBER_AUXILIARY (symbolP) < 1)
2631 S_SET_NUMBER_AUXILIARY (symbolP, 1);
2632 } /* make it at least 1 */
2634 /* Clobber possible stale .dim information. */
2636 /* Iffed out by steve - this fries the lnnoptr info too */
2637 bzero (symbolP->sy_symbol.ost_auxent[0].x_sym.x_fcnary.x_ary.x_dimen,
2638 sizeof (symbolP->sy_symbol.ost_auxent[0].x_sym.x_fcnary.x_ary.x_dimen));
2641 /* The C_FCN doesn't need any additional information. I
2642 don't even know if this is needed for sdb. But the
2643 standard assembler generates it, so... */
2644 if (S_GET_STORAGE_CLASS (symbolP) == C_EFCN)
2646 if (last_functionP == (symbolS *) 0)
2647 as_fatal ("C_EFCN symbol out of scope");
2648 SA_SET_SYM_FSIZE (last_functionP,
2649 (long) (S_GET_VALUE (symbolP) -
2650 S_GET_VALUE (last_functionP)));
2651 SA_SET_SYM_ENDNDX (last_functionP, symbol_number);
2652 last_functionP = (symbolS *) 0;
2656 else if (SF_GET_TAG (symbolP))
2658 /* First descriptor of a structure must point to
2659 the first slot after the structure description. */
2660 last_tagP = symbolP;
2663 else if (S_GET_STORAGE_CLASS (symbolP) == C_EOS)
2665 /* +2 take in account the current symbol */
2666 SA_SET_SYM_ENDNDX (last_tagP, symbol_number + 2);
2668 else if (S_GET_STORAGE_CLASS (symbolP) == C_FILE)
2670 /* If the filename was too long to fit in the
2671 auxent, put it in the string table */
2672 if (SA_GET_FILE_FNAME_ZEROS (symbolP) == 0)
2674 SA_SET_FILE_FNAME_OFFSET (symbolP, string_byte_count);
2675 string_byte_count += strlen (filename_list_scan->filename) + 1;
2676 filename_list_scan = filename_list_scan->next;
2678 if (S_GET_VALUE (symbolP))
2680 S_SET_VALUE (symbolP, last_file_symno);
2681 last_file_symno = symbol_number;
2682 } /* no one points at the first .file symbol */
2683 } /* if debug or tag or eos or file */
2685 /* We must put the external symbols apart. The loader
2686 does not bomb if we do not. But the references in
2687 the endndx field for a .bb symbol are not corrected
2688 if an external symbol is removed between .bb and .be.
2689 I.e in the following case :
2690 [20] .bb endndx = 22
2693 ld will move the symbol 21 to the end of the list but
2694 endndx will still be 22 instead of 21. */
2697 if (SF_GET_LOCAL (symbolP))
2699 /* remove C_EFCN and LOCAL (L...) symbols */
2700 /* next pointer remains valid */
2701 symbol_remove (symbolP, &symbol_rootP, &symbol_lastP);
2704 else if (symbolP->sy_value.X_op == O_symbol
2705 && (! S_IS_DEFINED (symbolP) || S_IS_COMMON (symbolP)))
2707 /* Skip symbols which were equated to undefined or common
2709 symbol_remove (symbolP, &symbol_rootP, &symbol_lastP);
2711 else if (!S_IS_DEFINED (symbolP)
2712 && !S_IS_DEBUG (symbolP)
2713 && !SF_GET_STATICS (symbolP) &&
2714 S_GET_STORAGE_CLASS (symbolP) == C_EXT)
2715 { /* C_EXT && !SF_GET_FUNCTION(symbolP)) */
2716 /* if external, Remove from the list */
2717 symbolS *hold = symbol_previous (symbolP);
2719 symbol_remove (symbolP, &symbol_rootP, &symbol_lastP);
2720 symbol_clear_list_pointers (symbolP);
2721 symbol_append (symbolP, symbol_extern_lastP, &symbol_externP, &symbol_extern_lastP);
2724 else if (! S_IS_DEBUG (symbolP)
2725 && ! SF_GET_STATICS (symbolP)
2726 && ! SF_GET_FUNCTION (symbolP)
2727 && S_GET_STORAGE_CLASS (symbolP) == C_EXT)
2729 symbolS *hold = symbol_previous (symbolP);
2731 /* The O'Reilly COFF book says that defined global symbols
2732 come at the end of the symbol table, just before
2733 undefined global symbols. */
2735 symbol_remove (symbolP, &symbol_rootP, &symbol_lastP);
2736 symbol_clear_list_pointers (symbolP);
2737 symbol_append (symbolP, symbol_global_lastP, &symbol_globalP,
2738 &symbol_global_lastP);
2743 if (SF_GET_STRING (symbolP))
2745 symbolP->sy_name_offset = string_byte_count;
2746 string_byte_count += strlen (S_GET_NAME (symbolP)) + 1;
2750 symbolP->sy_name_offset = 0;
2751 } /* fix "long" names */
2753 symbolP->sy_number = symbol_number;
2754 symbol_number += 1 + S_GET_NUMBER_AUXILIARY (symbolP);
2755 } /* if local symbol */
2756 } /* traverse the symbol list */
2757 return symbol_number;
2763 glue_symbols (head, tail)
2767 unsigned int symbol_number = 0;
2770 for (symbolP = *head; *head != NULL;)
2772 symbolS *tmp = *head;
2775 symbol_remove (tmp, head, tail);
2776 symbol_append (tmp, symbol_lastP, &symbol_rootP, &symbol_lastP);
2779 if (SF_GET_STRING (tmp))
2781 tmp->sy_name_offset = string_byte_count;
2782 string_byte_count += strlen (S_GET_NAME (tmp)) + 1;
2786 tmp->sy_name_offset = 0;
2787 } /* fix "long" names */
2789 tmp->sy_number = symbol_number;
2790 symbol_number += 1 + S_GET_NUMBER_AUXILIARY (tmp);
2791 } /* append the entire extern chain */
2793 return symbol_number;
2799 unsigned int symbol_number = 0;
2802 for (symbolP = symbol_rootP; symbolP; symbolP =
2803 symbol_next (symbolP))
2805 symbolP->sy_number = symbol_number;
2809 if (SF_GET_TAGGED (symbolP))
2813 ((symbolS *) SA_GET_SYM_TAGNDX (symbolP))->sy_number);
2816 symbol_number += 1 + S_GET_NUMBER_AUXILIARY (symbolP);
2818 return symbol_number;
2823 crawl_symbols (h, abfd)
2829 /* Initialize the stack used to keep track of the matching .bb .be */
2831 block_stack = stack_init (512, sizeof (symbolS *));
2833 /* The symbol list should be ordered according to the following sequence
2836 * . debug entries for functions
2837 * . fake symbols for the sections, including.text .data and .bss
2839 * . undefined symbols
2840 * But this is not mandatory. The only important point is to put the
2841 * undefined symbols at the end of the list.
2844 if (symbol_rootP == NULL
2845 || S_GET_STORAGE_CLASS (symbol_rootP) != C_FILE)
2847 c_dot_file_symbol ("fake");
2849 /* Is there a .file symbol ? If not insert one at the beginning. */
2852 * Build up static symbols for the sections, they are filled in later
2856 for (i = SEG_E0; i < SEG_E9; i++)
2858 if (segment_info[i].scnhdr.s_name[0])
2862 strncpy (name, segment_info[i].scnhdr.s_name, 8);
2864 segment_info[i].dot = c_section_symbol (name, i - SEG_E0 + 1);
2869 /* Take all the externals out and put them into another chain */
2870 H_SET_SYMBOL_TABLE_SIZE (h, yank_symbols ());
2871 /* Take the externals and glue them onto the end.*/
2872 H_SET_SYMBOL_TABLE_SIZE (h,
2873 (H_GET_SYMBOL_COUNT (h)
2874 + glue_symbols (&symbol_globalP,
2875 &symbol_global_lastP)
2876 + glue_symbols (&symbol_externP,
2877 &symbol_extern_lastP)));
2879 H_SET_SYMBOL_TABLE_SIZE (h, tie_tags ());
2880 know (symbol_globalP == NULL);
2881 know (symbol_global_lastP == NULL);
2882 know (symbol_externP == NULL);
2883 know (symbol_extern_lastP == NULL);
2887 * Find strings by crawling along symbol table chain.
2895 struct filename_list *filename_list_scan = filename_list_head;
2897 /* Gotta do md_ byte-ordering stuff for string_byte_count first - KWK */
2898 md_number_to_chars (where, (valueT) string_byte_count, 4);
2900 for (symbolP = symbol_rootP;
2902 symbolP = symbol_next (symbolP))
2906 if (SF_GET_STRING (symbolP))
2908 size = strlen (S_GET_NAME (symbolP)) + 1;
2909 memcpy (where, S_GET_NAME (symbolP), size);
2912 if (S_GET_STORAGE_CLASS (symbolP) == C_FILE
2913 && SA_GET_FILE_FNAME_ZEROS (symbolP) == 0)
2915 size = strlen (filename_list_scan->filename) + 1;
2916 memcpy (where, filename_list_scan->filename, size);
2917 filename_list_scan = filename_list_scan ->next;
2924 do_linenos_for (abfd, h, file_cursor)
2927 unsigned long *file_cursor;
2930 unsigned long start = *file_cursor;
2932 for (idx = SEG_E0; idx < SEG_E9; idx++)
2934 segment_info_type *s = segment_info + idx;
2937 if (s->scnhdr.s_nlnno != 0)
2939 struct lineno_list *line_ptr;
2941 struct external_lineno *buffer =
2942 (struct external_lineno *) xmalloc (s->scnhdr.s_nlnno * LINESZ);
2944 struct external_lineno *dst = buffer;
2946 /* Run through the table we've built and turn it into its external
2947 form, take this chance to remove duplicates */
2949 for (line_ptr = s->lineno_list_head;
2950 line_ptr != (struct lineno_list *) NULL;
2951 line_ptr = line_ptr->next)
2954 if (line_ptr->line.l_lnno == 0)
2956 /* Turn a pointer to a symbol into the symbols' index */
2957 line_ptr->line.l_addr.l_symndx =
2958 ((symbolS *) line_ptr->line.l_addr.l_symndx)->sy_number;
2962 line_ptr->line.l_addr.l_paddr += ((struct frag *) (line_ptr->frag))->fr_address;
2966 (void) bfd_coff_swap_lineno_out (abfd, &(line_ptr->line), dst);
2971 s->scnhdr.s_lnnoptr = *file_cursor;
2973 bfd_write (buffer, 1, s->scnhdr.s_nlnno * LINESZ, abfd);
2976 *file_cursor += s->scnhdr.s_nlnno * LINESZ;
2979 H_SET_LINENO_SIZE (h, *file_cursor - start);
2983 /* Now we run through the list of frag chains in a segment and
2984 make all the subsegment frags appear at the end of the
2985 list, as if the seg 0 was extra long */
2992 for (i = SEG_E0; i < SEG_UNKNOWN; i++)
2994 frchainS *head = segment_info[i].frchainP;
2996 fragS *prev_frag = &dummy;
2998 while (head && head->frch_seg == i)
3000 prev_frag->fr_next = head->frch_root;
3001 prev_frag = head->frch_last;
3002 head = head->frch_next;
3004 prev_frag->fr_next = 0;
3008 unsigned long machine;
3011 write_object_file ()
3015 struct frchain *frchain_ptr;
3017 object_headers headers;
3018 unsigned long file_cursor;
3021 abfd = bfd_openw (out_file_name, TARGET_FORMAT);
3026 as_perror ("FATAL: Can't create %s", out_file_name);
3027 exit (EXIT_FAILURE);
3029 bfd_set_format (abfd, bfd_object);
3030 bfd_set_arch_mach (abfd, BFD_ARCH, machine);
3032 string_byte_count = 4;
3034 for (frchain_ptr = frchain_root;
3035 frchain_ptr != (struct frchain *) NULL;
3036 frchain_ptr = frchain_ptr->frch_next)
3038 /* Run through all the sub-segments and align them up. Also
3039 close any open frags. We tack a .fill onto the end of the
3040 frag chain so that any .align's size can be worked by looking
3041 at the next frag. */
3043 subseg_set (frchain_ptr->frch_seg, frchain_ptr->frch_subseg);
3044 #ifndef SUB_SEGMENT_ALIGN
3045 #define SUB_SEGMENT_ALIGN(SEG) 1
3049 static char nop = NOP_OPCODE;
3050 md_do_align (SUB_SEGMENT_ALIGN (now_seg), &nop, 1, alignment_done);
3053 frag_align (SUB_SEGMENT_ALIGN (now_seg), NOP_OPCODE);
3057 frag_wane (frag_now);
3058 frag_now->fr_fix = 0;
3059 know (frag_now->fr_next == NULL);
3066 for (i = SEG_E0; i < SEG_UNKNOWN; i++)
3068 relax_segment (segment_info[i].frchainP->frch_root, i);
3071 H_SET_NUMBER_OF_SECTIONS (&headers, 0);
3073 /* Find out how big the sections are, and set the addresses. */
3075 for (i = SEG_E0; i < SEG_UNKNOWN; i++)
3079 segment_info[i].scnhdr.s_paddr = addr;
3080 segment_info[i].scnhdr.s_vaddr = addr;
3082 if (segment_info[i].scnhdr.s_name[0])
3084 H_SET_NUMBER_OF_SECTIONS (&headers,
3085 H_GET_NUMBER_OF_SECTIONS (&headers) + 1);
3088 size = size_section (abfd, (unsigned int) i);
3091 /* I think the section alignment is only used on the i960; the
3092 i960 needs it, and it should do no harm on other targets. */
3093 segment_info[i].scnhdr.s_align = 1 << section_alignment[i];
3096 H_SET_TEXT_SIZE (&headers, size);
3097 else if (i == SEG_E1)
3098 H_SET_DATA_SIZE (&headers, size);
3099 else if (i == SEG_E2)
3100 H_SET_BSS_SIZE (&headers, size);
3103 /* Turn the gas native symbol table shape into a coff symbol table */
3104 crawl_symbols (&headers, abfd);
3106 if (string_byte_count == 4)
3107 string_byte_count = 0;
3109 H_SET_STRING_SIZE (&headers, string_byte_count);
3115 for (i = SEG_E0; i < SEG_UNKNOWN; i++)
3117 fixup_mdeps (segment_info[i].frchainP->frch_root, &headers, i);
3118 fixup_segment (&segment_info[i], i);
3121 /* Look for ".stab" segments and fill in their initial symbols
3123 for (i = SEG_E0; i < SEG_UNKNOWN; i++)
3125 name = segment_info[i].scnhdr.s_name;
3128 && strncmp (".stab", name, 5) == 0
3129 && strncmp (".stabstr", name, 8) != 0)
3130 adjust_stab_section (abfd, i);
3133 file_cursor = H_GET_TEXT_FILE_OFFSET (&headers);
3135 bfd_seek (abfd, (file_ptr) file_cursor, 0);
3137 /* Plant the data */
3139 fill_section (abfd, &headers, &file_cursor);
3141 do_relocs_for (abfd, &headers, &file_cursor);
3143 do_linenos_for (abfd, &headers, &file_cursor);
3145 H_SET_FILE_MAGIC_NUMBER (&headers, COFF_MAGIC);
3146 #ifndef OBJ_COFF_OMIT_TIMESTAMP
3147 H_SET_TIME_STAMP (&headers, (long)time((time_t *)0));
3149 H_SET_TIME_STAMP (&headers, 0);
3151 #ifdef TC_COFF_SET_MACHINE
3152 TC_COFF_SET_MACHINE (&headers);
3156 #define COFF_FLAGS 0
3159 #ifdef KEEP_RELOC_INFO
3160 H_SET_FLAGS (&headers, ((H_GET_LINENO_SIZE(&headers) ? 0 : F_LNNO) |
3161 COFF_FLAGS | coff_flags));
3163 H_SET_FLAGS (&headers, ((H_GET_LINENO_SIZE(&headers) ? 0 : F_LNNO) |
3164 (H_GET_RELOCATION_SIZE(&headers) ? 0 : F_RELFLG) |
3165 COFF_FLAGS | coff_flags));
3169 unsigned int symtable_size = H_GET_SYMBOL_TABLE_SIZE (&headers);
3170 char *buffer1 = xmalloc (symtable_size + string_byte_count + 1);
3172 H_SET_SYMBOL_TABLE_POINTER (&headers, bfd_tell (abfd));
3173 w_symbols (abfd, buffer1, symbol_rootP);
3174 if (string_byte_count > 0)
3175 w_strings (buffer1 + symtable_size);
3176 bfd_write (buffer1, 1, symtable_size + string_byte_count, abfd);
3180 coff_header_append (abfd, &headers);
3182 /* Recent changes to write need this, but where it should
3183 go is up to Ken.. */
3184 if (bfd_close_all_done (abfd) == false)
3185 as_fatal ("Can't close %s: %s", out_file_name,
3186 bfd_errmsg (bfd_get_error ()));
3189 extern bfd *stdoutput;
3196 /* Add a new segment. This is called from subseg_new via the
3197 obj_new_segment macro. */
3200 obj_coff_add_segment (name)
3206 /* Find out if we've already got a section of this name. */
3207 len = strlen (name);
3208 if (len < sizeof (segment_info[i].scnhdr.s_name))
3211 len = sizeof (segment_info[i].scnhdr.s_name);
3212 for (i = SEG_E0; i < SEG_E9 && segment_info[i].scnhdr.s_name[0]; i++)
3213 if (strncmp (segment_info[i].scnhdr.s_name, name, len) == 0
3214 && (len == sizeof (segment_info[i].scnhdr.s_name)
3215 || segment_info[i].scnhdr.s_name[len] == '\0'))
3220 as_bad ("Too many new sections; can't add \"%s\"", name);
3224 /* Add a new section. */
3225 strncpy (segment_info[i].scnhdr.s_name, name,
3226 sizeof (segment_info[i].scnhdr.s_name));
3227 segment_info[i].scnhdr.s_flags = STYP_REG;
3233 * implement the .section pseudo op:
3234 * .section name {, "flags"}
3236 * | +--- optional flags: 'b' for bss
3238 * +-- section name 'l' for lib
3242 * 'd' (apparently m88k for data)
3244 * But if the argument is not a quoted string, treat it as a
3245 * subsegment number.
3249 obj_coff_section (ignore)
3252 /* Strip out the section name */
3254 char *section_name_end;
3269 else if (type == 'D')
3271 segment_info[now_seg].scnhdr.s_flags |= flags;
3276 section_name = input_line_pointer;
3277 c = get_symbol_end ();
3278 section_name_end = input_line_pointer;
3280 len = section_name_end - section_name;
3281 input_line_pointer++;
3287 else if (*input_line_pointer == ',')
3290 ++input_line_pointer;
3298 if (*input_line_pointer != '"')
3299 exp = get_absolute_expression ();
3302 ++input_line_pointer;
3303 while (*input_line_pointer != '"'
3304 && ! is_end_of_line[(unsigned char) *input_line_pointer])
3306 switch (*input_line_pointer)
3308 case 'b': flags |= STYP_BSS; break;
3309 case 'i': flags |= STYP_INFO; break;
3310 case 'l': flags |= STYP_LIB; break;
3311 case 'n': flags |= STYP_NOLOAD; break;
3312 case 'o': flags |= STYP_OVER; break;
3314 case 'w': flags |= STYP_DATA; break;
3315 case 'x': flags |= STYP_TEXT; break;
3317 as_warn("unknown section attribute '%c'",
3318 *input_line_pointer);
3321 ++input_line_pointer;
3323 if (*input_line_pointer == '"')
3324 ++input_line_pointer;
3328 subseg_new (section_name, (subsegT) exp);
3330 segment_info[now_seg].scnhdr.s_flags |= flags;
3332 *section_name_end = c;
3337 obj_coff_text (ignore)
3340 subseg_new (".text", get_absolute_expression ());
3345 obj_coff_data (ignore)
3348 if (flag_readonly_data_in_text)
3349 subseg_new (".text", get_absolute_expression () + 1000);
3351 subseg_new (".data", get_absolute_expression ());
3355 obj_coff_bss (ignore)
3358 if (*input_line_pointer == '\n') /* .bss */
3359 subseg_new(".bss", get_absolute_expression());
3360 else /* .bss id,expr */
3365 obj_coff_ident (ignore)
3368 segT current_seg = now_seg; /* save current seg */
3369 subsegT current_subseg = now_subseg;
3370 subseg_new (".comment", 0); /* .comment seg */
3371 stringer (1); /* read string */
3372 subseg_set (current_seg, current_subseg); /* restore current seg */
3376 c_symbol_merge (debug, normal)
3380 S_SET_DATA_TYPE (normal, S_GET_DATA_TYPE (debug));
3381 S_SET_STORAGE_CLASS (normal, S_GET_STORAGE_CLASS (debug));
3383 if (S_GET_NUMBER_AUXILIARY (debug) > S_GET_NUMBER_AUXILIARY (normal))
3385 S_SET_NUMBER_AUXILIARY (normal, S_GET_NUMBER_AUXILIARY (debug));
3386 } /* take the most we have */
3388 if (S_GET_NUMBER_AUXILIARY (debug) > 0)
3390 memcpy ((char *) &normal->sy_symbol.ost_auxent[0],
3391 (char *) &debug->sy_symbol.ost_auxent[0],
3392 (unsigned int) (S_GET_NUMBER_AUXILIARY (debug) * AUXESZ));
3393 } /* Move all the auxiliary information */
3395 /* Move the debug flags. */
3396 SF_SET_DEBUG_FIELD (normal, SF_GET_DEBUG_FIELD (debug));
3397 } /* c_symbol_merge() */
3400 c_line_new (symbol, paddr, line_number, frag)
3406 struct lineno_list *new_line =
3407 (struct lineno_list *) xmalloc (sizeof (struct lineno_list));
3409 segment_info_type *s = segment_info + now_seg;
3410 new_line->line.l_lnno = line_number;
3412 if (line_number == 0)
3414 last_line_symbol = symbol;
3415 new_line->line.l_addr.l_symndx = (long) symbol;
3419 new_line->line.l_addr.l_paddr = paddr;
3422 new_line->frag = (char *) frag;
3423 new_line->next = (struct lineno_list *) NULL;
3426 if (s->lineno_list_head == (struct lineno_list *) NULL)
3428 s->lineno_list_head = new_line;
3432 s->lineno_list_tail->next = new_line;
3434 s->lineno_list_tail = new_line;
3435 return LINESZ * s->scnhdr.s_nlnno++;
3439 c_dot_file_symbol (filename)
3444 symbolP = symbol_new (".file",
3447 &zero_address_frag);
3449 S_SET_STORAGE_CLASS (symbolP, C_FILE);
3450 S_SET_NUMBER_AUXILIARY (symbolP, 1);
3452 if (strlen (filename) > FILNMLEN)
3454 /* Filename is too long to fit into an auxent,
3455 we stick it into the string table instead. We keep
3456 a linked list of the filenames we find so we can emit
3458 struct filename_list *f = ((struct filename_list *)
3459 xmalloc (sizeof (struct filename_list)));
3461 f->filename = filename;
3464 SA_SET_FILE_FNAME_ZEROS (symbolP, 0);
3465 SA_SET_FILE_FNAME_OFFSET (symbolP, 0);
3467 if (filename_list_tail)
3468 filename_list_tail->next = f;
3470 filename_list_head = f;
3471 filename_list_tail = f;
3475 SA_SET_FILE_FNAME (symbolP, filename);
3482 listing_source_file (filename);
3488 SF_SET_DEBUG (symbolP);
3489 S_SET_VALUE (symbolP, (valueT) previous_file_symbol);
3491 previous_file_symbol = symbolP;
3493 /* Make sure that the symbol is first on the symbol chain */
3494 if (symbol_rootP != symbolP)
3496 if (symbolP == symbol_lastP)
3498 symbol_lastP = symbol_lastP->sy_previous;
3499 } /* if it was the last thing on the list */
3501 symbol_remove (symbolP, &symbol_rootP, &symbol_lastP);
3502 symbol_insert (symbolP, symbol_rootP, &symbol_rootP, &symbol_lastP);
3503 symbol_rootP = symbolP;
3504 } /* if not first on the list */
3506 } /* c_dot_file_symbol() */
3509 * Build a 'section static' symbol.
3513 c_section_symbol (name, idx)
3519 symbolP = symbol_new (name, idx,
3521 &zero_address_frag);
3523 S_SET_STORAGE_CLASS (symbolP, C_STAT);
3524 S_SET_NUMBER_AUXILIARY (symbolP, 1);
3526 SF_SET_STATICS (symbolP);
3529 } /* c_section_symbol() */
3532 w_symbols (abfd, where, symbol_rootP)
3535 symbolS * symbol_rootP;
3540 /* First fill in those values we have only just worked out */
3541 for (i = SEG_E0; i < SEG_E9; i++)
3543 symbolP = segment_info[i].dot;
3546 SA_SET_SCN_SCNLEN (symbolP, segment_info[i].scnhdr.s_size);
3547 SA_SET_SCN_NRELOC (symbolP, segment_info[i].scnhdr.s_nreloc);
3548 SA_SET_SCN_NLINNO (symbolP, segment_info[i].scnhdr.s_nlnno);
3553 * Emit all symbols left in the symbol chain.
3555 for (symbolP = symbol_rootP; symbolP; symbolP = symbol_next (symbolP))
3557 /* Used to save the offset of the name. It is used to point
3558 to the string in memory but must be a file offset. */
3559 register char *temp;
3561 tc_coff_symbol_emit_hook (symbolP);
3563 temp = S_GET_NAME (symbolP);
3564 if (SF_GET_STRING (symbolP))
3566 S_SET_OFFSET (symbolP, symbolP->sy_name_offset);
3567 S_SET_ZEROES (symbolP, 0);
3571 memset (symbolP->sy_symbol.ost_entry.n_name, 0, SYMNMLEN);
3572 strncpy (symbolP->sy_symbol.ost_entry.n_name, temp, SYMNMLEN);
3574 where = symbol_to_chars (abfd, where, symbolP);
3575 S_SET_NAME (symbolP, temp);
3581 obj_coff_lcomm (ignore)
3594 name = input_line_pointer;
3596 c = get_symbol_end ();
3597 p = input_line_pointer;
3600 if (*input_line_pointer != ',')
3602 as_bad ("Expected comma after name");
3603 ignore_rest_of_line ();
3606 if (*input_line_pointer == '\n')
3608 as_bad ("Missing size expression");
3611 input_line_pointer++;
3612 if ((temp = get_absolute_expression ()) < 0)
3614 as_warn ("lcomm length (%d.) <0! Ignored.", temp);
3615 ignore_rest_of_line ();
3620 symbolP = symbol_find_or_make(name);
3622 if (S_GET_SEGMENT(symbolP) == SEG_UNKNOWN &&
3623 S_GET_VALUE(symbolP) == 0)
3628 segT current_seg = now_seg; /* save current seg */
3629 subsegT current_subseg = now_subseg;
3631 subseg_set (SEG_E2, 1);
3632 symbolP->sy_frag = frag_now;
3633 p = frag_var(rs_org, 1, 1, (relax_substateT)0, symbolP,
3636 subseg_set (current_seg, current_subseg); /* restore current seg */
3637 S_SET_SEGMENT(symbolP, SEG_E2);
3638 S_SET_STORAGE_CLASS(symbolP, C_STAT);
3642 as_bad("Symbol %s already defined", name);
3644 demand_empty_rest_of_line();
3649 fixup_mdeps (frags, h, this_segment)
3654 subseg_change (this_segment, 0);
3657 switch (frags->fr_type)
3663 HANDLE_ALIGN (frags);
3665 frags->fr_type = rs_fill;
3667 ((frags->fr_next->fr_address - frags->fr_address - frags->fr_fix)
3670 case rs_machine_dependent:
3671 md_convert_frag (h, this_segment, frags);
3677 frags = frags->fr_next;
3683 #ifndef TC_FORCE_RELOCATION
3684 #define TC_FORCE_RELOCATION(fix) 0
3688 fixup_segment (segP, this_segment_type)
3689 segment_info_type * segP;
3690 segT this_segment_type;
3692 register fixS * fixP;
3693 register symbolS *add_symbolP;
3694 register symbolS *sub_symbolP;
3697 register char *place;
3698 register long where;
3699 register char pcrel;
3700 register fragS *fragP;
3701 register segT add_symbol_segment = absolute_section;
3706 for (fixP = segP->fix_root; fixP; fixP = fixP->fx_next)
3708 fragP = fixP->fx_frag;
3710 where = fixP->fx_where;
3711 place = fragP->fr_literal + where;
3712 size = fixP->fx_size;
3713 add_symbolP = fixP->fx_addsy;
3715 if (fixP->fx_tcbit && SF_GET_CALLNAME (add_symbolP))
3717 /* Relocation should be done via the associated 'bal' entry
3720 if (!SF_GET_BALNAME (tc_get_bal_of_call (add_symbolP)))
3722 as_bad_where (fixP->fx_file, fixP->fx_line,
3723 "No 'bal' entry point for leafproc %s",
3724 S_GET_NAME (add_symbolP));
3727 fixP->fx_addsy = add_symbolP = tc_get_bal_of_call (add_symbolP);
3730 sub_symbolP = fixP->fx_subsy;
3731 add_number = fixP->fx_offset;
3732 pcrel = fixP->fx_pcrel;
3734 if (add_symbolP != NULL
3735 && add_symbolP->sy_mri_common)
3737 know (add_symbolP->sy_value.X_op == O_symbol);
3738 add_number += S_GET_VALUE (add_symbolP);
3739 fixP->fx_offset = add_number;
3740 add_symbolP = fixP->fx_addsy = add_symbolP->sy_value.X_add_symbol;
3745 add_symbol_segment = S_GET_SEGMENT (add_symbolP);
3746 } /* if there is an addend */
3750 if (add_symbolP == NULL || add_symbol_segment == absolute_section)
3752 if (add_symbolP != NULL)
3754 add_number += S_GET_VALUE (add_symbolP);
3756 fixP->fx_addsy = NULL;
3759 /* It's just -sym. */
3760 if (S_GET_SEGMENT (sub_symbolP) == absolute_section)
3762 add_number -= S_GET_VALUE (sub_symbolP);
3769 as_bad_where (fixP->fx_file, fixP->fx_line,
3770 "Negative of non-absolute symbol %s",
3771 S_GET_NAME (sub_symbolP));
3773 add_number -= S_GET_VALUE (sub_symbolP);
3774 } /* not absolute */
3776 /* if sub_symbol is in the same segment that add_symbol
3777 and add_symbol is either in DATA, TEXT, BSS or ABSOLUTE */
3779 else if (S_GET_SEGMENT (sub_symbolP) == add_symbol_segment
3780 && SEG_NORMAL (add_symbol_segment))
3782 /* Difference of 2 symbols from same segment. Can't
3783 make difference of 2 undefineds: 'value' means
3784 something different for N_UNDF. */
3786 /* Makes no sense to use the difference of 2 arbitrary symbols
3787 as the target of a call instruction. */
3790 as_bad_where (fixP->fx_file, fixP->fx_line,
3791 "callj to difference of 2 symbols");
3793 #endif /* TC_I960 */
3794 add_number += S_GET_VALUE (add_symbolP) -
3795 S_GET_VALUE (sub_symbolP);
3798 if (!TC_FORCE_RELOCATION (fixP))
3800 fixP->fx_addsy = NULL;
3801 fixP->fx_subsy = NULL;
3803 #ifdef TC_M68K /* is this right? */
3811 /* Different segments in subtraction. */
3812 know (!(S_IS_EXTERNAL (sub_symbolP) && (S_GET_SEGMENT (sub_symbolP) == absolute_section)));
3814 if ((S_GET_SEGMENT (sub_symbolP) == absolute_section))
3816 add_number -= S_GET_VALUE (sub_symbolP);
3819 else if (S_GET_SEGMENT (sub_symbolP) == this_segment_type
3820 #if 0 /* Okay for 68k, at least... */
3825 /* Make it pc-relative. */
3826 add_number += (md_pcrel_from (fixP)
3827 - S_GET_VALUE (sub_symbolP));
3836 as_bad_where (fixP->fx_file, fixP->fx_line,
3837 "Can't emit reloc {- %s-seg symbol \"%s\"} @ file address %ld.",
3838 segment_name (S_GET_SEGMENT (sub_symbolP)),
3839 S_GET_NAME (sub_symbolP),
3840 (long) (fragP->fr_address + where));
3843 } /* if sub_symbolP */
3847 if (add_symbol_segment == this_segment_type && pcrel)
3850 * This fixup was made when the symbol's segment was
3851 * SEG_UNKNOWN, but it is now in the local segment.
3852 * So we know how to do the address without relocation.
3855 /* reloc_callj() may replace a 'call' with a 'calls' or a 'bal',
3856 * in which cases it modifies *fixP as appropriate. In the case
3857 * of a 'calls', no further work is required, and *fixP has been
3858 * set up to make the rest of the code below a no-op.
3861 #endif /* TC_I960 */
3863 add_number += S_GET_VALUE (add_symbolP);
3864 add_number -= md_pcrel_from (fixP);
3865 #if defined (TC_I386) || defined (TE_LYNX)
3866 /* On the 386 we must adjust by the segment
3867 vaddr as well. Ian Taylor. */
3868 add_number -= segP->scnhdr.s_vaddr;
3870 pcrel = 0; /* Lie. Don't want further pcrel processing. */
3871 if (!TC_FORCE_RELOCATION (fixP))
3873 fixP->fx_addsy = NULL;
3879 switch (add_symbol_segment)
3881 case absolute_section:
3883 reloc_callj (fixP); /* See comment about reloc_callj() above*/
3884 #endif /* TC_I960 */
3885 add_number += S_GET_VALUE (add_symbolP);
3888 if (!TC_FORCE_RELOCATION (fixP))
3890 fixP->fx_addsy = NULL;
3897 #if defined(TC_A29K) || (defined(TE_PE) && defined(TC_I386)) || defined(TC_M88K)
3898 /* This really should be handled in the linker, but
3899 backward compatibility forbids. */
3900 add_number += S_GET_VALUE (add_symbolP);
3902 add_number += S_GET_VALUE (add_symbolP) +
3903 segment_info[S_GET_SEGMENT (add_symbolP)].scnhdr.s_paddr;
3909 if ((int) fixP->fx_bit_fixP == 13)
3911 /* This is a COBR instruction. They have only a
3912 * 13-bit displacement and are only to be used
3913 * for local branches: flag as error, don't generate
3916 as_bad_where (fixP->fx_file, fixP->fx_line,
3917 "can't use COBR format with external label");
3918 fixP->fx_addsy = NULL;
3922 #endif /* TC_I960 */
3923 #if (defined (TC_I386) || defined (TE_LYNX) || defined (TE_AUX)) && !defined(TE_PE)
3924 /* 386 COFF uses a peculiar format in which the
3925 value of a common symbol is stored in the .text
3926 segment (I've checked this on SVR3.2 and SCO
3927 3.2.2) Ian Taylor <ian@cygnus.com>. */
3928 if (S_IS_COMMON (add_symbolP))
3929 add_number += S_GET_VALUE (add_symbolP);
3934 } /* switch on symbol seg */
3935 } /* if not in local seg */
3936 } /* if there was a + symbol */
3940 #if !defined(TC_M88K) && !(defined(TE_PE) && defined(TC_I386)) && !defined(TC_A29K)
3941 /* This adjustment is not correct on the m88k, for which the
3942 linker does all the computation. */
3943 add_number -= md_pcrel_from (fixP);
3945 if (add_symbolP == 0)
3947 fixP->fx_addsy = &abs_symbol;
3948 } /* if there's an add_symbol */
3949 #if defined (TC_I386) || defined (TE_LYNX)
3950 /* On the 386 we must adjust by the segment vaddr
3951 as well. Ian Taylor. */
3952 add_number -= segP->scnhdr.s_vaddr;
3956 if (!fixP->fx_bit_fixP)
3959 /* The m88k uses the offset field of the reloc to get around
3962 && (add_number & ~0xFF)
3963 && ((add_number & ~0xFF) != (-1 & ~0xFF)))
3965 && (add_number & ~0xFFFF)
3966 && ((add_number & ~0xFFFF) != (-1 & ~0xFFFF))))
3968 as_bad_where (fixP->fx_file, fixP->fx_line,
3969 "Value of %ld too large for field of %d bytes at 0x%lx",
3970 (long) add_number, size,
3971 (unsigned long) (fragP->fr_address + where));
3974 #ifdef WARN_SIGNED_OVERFLOW_WORD
3975 /* Warn if a .word value is too large when treated as a
3976 signed number. We already know it is not too negative.
3977 This is to catch over-large switches generated by gcc on
3979 if (!flag_signed_overflow_ok
3981 && add_number > 0x7fff)
3982 as_bad_where (fixP->fx_file, fixP->fx_line,
3983 "Signed .word overflow; switch may be too large; %ld at 0x%lx",
3985 (unsigned long) (fragP->fr_address + where));
3987 } /* not a bit fix */
3988 /* Once this fix has been applied, we don't have to output
3989 anything nothing more need be done. */
3990 #ifdef MD_APPLY_FIX3
3991 md_apply_fix3 (fixP, &add_number, this_segment_type);
3993 md_apply_fix (fixP, add_number);
3995 } /* For each fixS in this segment. */
3996 } /* fixup_segment() */
4000 /* The first entry in a .stab section is special. */
4003 obj_coff_init_stab_section (seg)
4009 unsigned int stroff;
4011 /* Make space for this first symbol. */
4015 as_where (&file, (unsigned int *) NULL);
4016 stabstr_name = (char *) alloca (strlen (segment_info[seg].scnhdr.s_name) + 4);
4017 strcpy (stabstr_name, segment_info[seg].scnhdr.s_name);
4018 strcat (stabstr_name, "str");
4019 stroff = get_stab_string_offset (file, stabstr_name);
4021 md_number_to_chars (p, stroff, 4);
4024 /* Fill in the counts in the first entry in a .stab section. */
4027 adjust_stab_section(abfd, seg)
4031 segT stabstrseg = SEG_UNKNOWN;
4032 char *secname, *name, *name2;
4034 int i, strsz = 0, nsyms;
4035 fragS *frag = segment_info[seg].frchainP->frch_root;
4037 /* Look for the associated string table section. */
4039 secname = segment_info[seg].scnhdr.s_name;
4040 name = (char *) alloca (strlen (secname) + 4);
4041 strcpy (name, secname);
4042 strcat (name, "str");
4044 for (i = SEG_E0; i < SEG_UNKNOWN; i++)
4046 name2 = segment_info[i].scnhdr.s_name;
4047 if (name2 != NULL && strncmp(name2, name, 8) == 0)
4054 /* If we found the section, get its size. */
4055 if (stabstrseg != SEG_UNKNOWN)
4056 strsz = size_section (abfd, stabstrseg);
4058 nsyms = size_section (abfd, seg) / 12 - 1;
4060 /* Look for the first frag of sufficient size for the initial stab
4061 symbol, and collect a pointer to it. */
4062 while (frag && frag->fr_fix < 12)
4063 frag = frag->fr_next;
4065 p = frag->fr_literal;
4068 /* Write in the number of stab symbols and the size of the string
4070 bfd_h_put_16 (abfd, (bfd_vma) nsyms, (bfd_byte *) p + 6);
4071 bfd_h_put_32 (abfd, (bfd_vma) strsz, (bfd_byte *) p + 8);
4074 #endif /* not BFD_ASSEMBLER */
4076 const pseudo_typeS obj_pseudo_table[] =
4078 {"def", obj_coff_def, 0},
4079 {"dim", obj_coff_dim, 0},
4080 {"endef", obj_coff_endef, 0},
4081 {"line", obj_coff_line, 0},
4082 {"ln", obj_coff_ln, 0},
4083 {"appline", obj_coff_ln, 1},
4084 {"scl", obj_coff_scl, 0},
4085 {"size", obj_coff_size, 0},
4086 {"tag", obj_coff_tag, 0},
4087 {"type", obj_coff_type, 0},
4088 {"val", obj_coff_val, 0},
4089 {"section", obj_coff_section, 0},
4090 {"sect", obj_coff_section, 0},
4091 /* FIXME: We ignore the MRI short attribute. */
4092 {"section.s", obj_coff_section, 0},
4093 {"sect.s", obj_coff_section, 0},
4094 #ifndef BFD_ASSEMBLER
4095 {"use", obj_coff_section, 0},
4096 {"text", obj_coff_text, 0},
4097 {"data", obj_coff_data, 0},
4098 {"bss", obj_coff_bss, 0},
4099 {"lcomm", obj_coff_lcomm, 0},
4100 {"ident", obj_coff_ident, 0},
4102 {"optim", s_ignore, 0}, /* For sun386i cc (?) */
4103 {"ident", s_ignore, 0}, /* we don't yet handle this. */
4105 {"ABORT", s_abort, 0},
4107 /* The m88k uses sdef instead of def. */
4108 {"sdef", obj_coff_def, 0},
4110 {NULL} /* end sentinel */
4111 }; /* obj_pseudo_table */