1 /* coff object file format
2 Copyright 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998,
4 Free Software Foundation, Inc.
6 This file is part of GAS.
8 GAS is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 2, or (at your option)
13 GAS is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with GAS; see the file COPYING. If not, write to the Free
20 Software Foundation, 59 Temple Place - Suite 330, Boston, MA
23 #define OBJ_HEADER "obj-coff.h"
29 /* I think this is probably always correct. */
30 #ifndef KEEP_RELOC_INFO
31 #define KEEP_RELOC_INFO
34 /* The BFD_ASSEMBLER version of obj_coff_section will use this macro to set
35 a new section's attributes when a directive has no valid flags or the
36 "w" flag is used. This default should be appropriate for most. */
37 #ifndef TC_COFF_SECTION_DEFAULT_ATTRIBUTES
38 #define TC_COFF_SECTION_DEFAULT_ATTRIBUTES (SEC_LOAD | SEC_DATA)
41 /* This is used to hold the symbol built by a sequence of pseudo-ops
42 from .def and .endef. */
43 static symbolS *def_symbol_in_progress;
47 unsigned long chunk_size;
48 unsigned long element_size;
51 unsigned long pointer;
55 static stack *stack_init PARAMS ((unsigned long, unsigned long));
56 static char *stack_push PARAMS ((stack *, char *));
57 static char *stack_pop PARAMS ((stack *));
58 static void tag_init PARAMS ((void));
59 static void tag_insert PARAMS ((const char *, symbolS *));
60 static symbolS *tag_find PARAMS ((char *));
61 static symbolS *tag_find_or_make PARAMS ((char *));
62 static void obj_coff_bss PARAMS ((int));
63 static void obj_coff_weak PARAMS ((int));
64 const char *s_get_name PARAMS ((symbolS * s));
65 static void obj_coff_ln PARAMS ((int));
66 static void obj_coff_def PARAMS ((int));
67 static void obj_coff_endef PARAMS ((int));
68 static void obj_coff_dim PARAMS ((int));
69 static void obj_coff_line PARAMS ((int));
70 static void obj_coff_size PARAMS ((int));
71 static void obj_coff_scl PARAMS ((int));
72 static void obj_coff_tag PARAMS ((int));
73 static void obj_coff_val PARAMS ((int));
74 static void obj_coff_type PARAMS ((int));
75 static void obj_coff_ident PARAMS ((int));
77 static void obj_coff_loc PARAMS((int));
83 stack_init (chunk_size, element_size)
84 unsigned long chunk_size;
85 unsigned long element_size;
89 st = (stack *) malloc (sizeof (stack));
92 st->data = malloc (chunk_size);
99 st->size = chunk_size;
100 st->chunk_size = chunk_size;
101 st->element_size = element_size;
106 /* Not currently used. */
117 stack_push (st, element)
121 if (st->pointer + st->element_size >= st->size)
123 st->size += st->chunk_size;
124 if ((st->data = xrealloc (st->data, st->size)) == (char *) 0)
127 memcpy (st->data + st->pointer, element, st->element_size);
128 st->pointer += st->element_size;
129 return st->data + st->pointer;
136 if (st->pointer < st->element_size)
141 st->pointer -= st->element_size;
142 return st->data + st->pointer;
146 * Maintain a list of the tagnames of the structres.
149 static struct hash_control *tag_hash;
154 tag_hash = hash_new ();
158 tag_insert (name, symbolP)
162 const char *error_string;
164 if ((error_string = hash_jam (tag_hash, name, (char *) symbolP)))
166 as_fatal (_("Inserting \"%s\" into structure table failed: %s"),
175 #ifdef STRIP_UNDERSCORE
178 #endif /* STRIP_UNDERSCORE */
179 return (symbolS *) hash_find (tag_hash, name);
183 tag_find_or_make (name)
188 if ((symbolP = tag_find (name)) == NULL)
190 symbolP = symbol_new (name, undefined_section,
191 0, &zero_address_frag);
193 tag_insert (S_GET_NAME (symbolP), symbolP);
195 symbol_table_insert (symbolP);
202 /* We accept the .bss directive to set the section for backward
203 compatibility with earlier versions of gas. */
206 obj_coff_bss (ignore)
207 int ignore ATTRIBUTE_UNUSED;
209 if (*input_line_pointer == '\n')
210 subseg_new (".bss", get_absolute_expression ());
215 /* Handle .weak. This is a GNU extension. */
218 obj_coff_weak (ignore)
219 int ignore ATTRIBUTE_UNUSED;
227 name = input_line_pointer;
228 c = get_symbol_end ();
229 symbolP = symbol_find_or_make (name);
230 *input_line_pointer = c;
233 #if defined BFD_ASSEMBLER || defined S_SET_WEAK
234 S_SET_WEAK (symbolP);
238 S_SET_STORAGE_CLASS (symbolP, C_NT_WEAK);
240 S_SET_STORAGE_CLASS (symbolP, C_WEAKEXT);
245 input_line_pointer++;
247 if (*input_line_pointer == '\n')
253 demand_empty_rest_of_line ();
258 static segT fetch_coff_debug_section PARAMS ((void));
259 static void SA_SET_SYM_TAGNDX PARAMS ((symbolS *, symbolS *));
260 static int S_GET_DATA_TYPE PARAMS ((symbolS *));
261 void c_symbol_merge PARAMS ((symbolS *, symbolS *));
262 static void add_lineno PARAMS ((fragS *, addressT, int));
264 #define GET_FILENAME_STRING(X) \
265 ((char*) (&((X)->sy_symbol.ost_auxent->x_file.x_n.x_offset))[1])
269 fetch_coff_debug_section ()
271 static segT debug_section;
275 s = bfd_make_debug_symbol (stdoutput, (char *) 0, 0);
277 debug_section = s->section;
279 return debug_section;
283 SA_SET_SYM_ENDNDX (sym, val)
287 combined_entry_type *entry, *p;
289 entry = &coffsymbol (symbol_get_bfdsym (sym))->native[1];
290 p = coffsymbol (symbol_get_bfdsym (val))->native;
291 entry->u.auxent.x_sym.x_fcnary.x_fcn.x_endndx.p = p;
296 SA_SET_SYM_TAGNDX (sym, val)
300 combined_entry_type *entry, *p;
302 entry = &coffsymbol (symbol_get_bfdsym (sym))->native[1];
303 p = coffsymbol (symbol_get_bfdsym (val))->native;
304 entry->u.auxent.x_sym.x_tagndx.p = p;
309 S_GET_DATA_TYPE (sym)
312 return coffsymbol (symbol_get_bfdsym (sym))->native->u.syment.n_type;
316 S_SET_DATA_TYPE (sym, val)
320 coffsymbol (symbol_get_bfdsym (sym))->native->u.syment.n_type = val;
325 S_GET_STORAGE_CLASS (sym)
328 return coffsymbol (symbol_get_bfdsym (sym))->native->u.syment.n_sclass;
332 S_SET_STORAGE_CLASS (sym, val)
336 coffsymbol (symbol_get_bfdsym (sym))->native->u.syment.n_sclass = val;
340 /* Merge a debug symbol containing debug information into a normal symbol. */
343 c_symbol_merge (debug, normal)
347 S_SET_DATA_TYPE (normal, S_GET_DATA_TYPE (debug));
348 S_SET_STORAGE_CLASS (normal, S_GET_STORAGE_CLASS (debug));
350 if (S_GET_NUMBER_AUXILIARY (debug) > S_GET_NUMBER_AUXILIARY (normal))
352 /* take the most we have */
353 S_SET_NUMBER_AUXILIARY (normal, S_GET_NUMBER_AUXILIARY (debug));
356 if (S_GET_NUMBER_AUXILIARY (debug) > 0)
358 /* Move all the auxiliary information. */
359 memcpy (SYM_AUXINFO (normal), SYM_AUXINFO (debug),
360 (S_GET_NUMBER_AUXILIARY (debug)
361 * sizeof (*SYM_AUXINFO (debug))));
364 /* Move the debug flags. */
365 SF_SET_DEBUG_FIELD (normal, SF_GET_DEBUG_FIELD (debug));
369 c_dot_file_symbol (filename)
370 const char *filename;
374 /* BFD converts filename to a .file symbol with an aux entry. It
375 also handles chaining. */
376 symbolP = symbol_new (filename, bfd_abs_section_ptr, 0, &zero_address_frag);
378 S_SET_STORAGE_CLASS (symbolP, C_FILE);
379 S_SET_NUMBER_AUXILIARY (symbolP, 1);
381 symbol_get_bfdsym (symbolP)->flags = BSF_DEBUGGING;
388 listing_source_file (filename);
393 /* Make sure that the symbol is first on the symbol chain */
394 if (symbol_rootP != symbolP)
396 symbol_remove (symbolP, &symbol_rootP, &symbol_lastP);
397 symbol_insert (symbolP, symbol_rootP, &symbol_rootP, &symbol_lastP);
398 } /* if not first on the list */
401 /* Line number handling */
404 struct line_no *next;
411 /* Symbol of last function, which we should hang line#s off of. */
412 static symbolS *line_fsym;
414 #define in_function() (line_fsym != 0)
415 #define clear_function() (line_fsym = 0)
416 #define set_function(F) (line_fsym = (F), coff_add_linesym (F))
420 coff_obj_symbol_new_hook (symbolP)
423 long sz = (OBJ_COFF_MAX_AUXENTRIES + 1) * sizeof (combined_entry_type);
424 char * s = (char *) xmalloc (sz);
427 coffsymbol (symbol_get_bfdsym (symbolP))->native = (combined_entry_type *) s;
429 S_SET_DATA_TYPE (symbolP, T_NULL);
430 S_SET_STORAGE_CLASS (symbolP, 0);
431 S_SET_NUMBER_AUXILIARY (symbolP, 0);
433 if (S_IS_STRING (symbolP))
434 SF_SET_STRING (symbolP);
436 if (S_IS_LOCAL (symbolP))
437 SF_SET_LOCAL (symbolP);
442 * Handle .ln directives.
445 static symbolS *current_lineno_sym;
446 static struct line_no *line_nos;
447 /* @@ Blindly assume all .ln directives will be in the .text section... */
451 add_lineno (frag, offset, num)
456 struct line_no *new_line =
457 (struct line_no *) xmalloc (sizeof (struct line_no));
458 if (!current_lineno_sym)
464 /* The native aix assembler accepts negative line number */
468 /* Zero is used as an end marker in the file. */
469 as_warn (_("Line numbers must be positive integers\n"));
472 #endif /* OBJ_XCOFF */
473 new_line->next = line_nos;
474 new_line->frag = frag;
475 new_line->l.line_number = num;
476 new_line->l.u.offset = offset;
482 coff_add_linesym (sym)
487 coffsymbol (symbol_get_bfdsym (current_lineno_sym))->lineno =
492 current_lineno_sym = sym;
496 obj_coff_ln (appline)
501 if (! appline && def_symbol_in_progress != NULL)
503 as_warn (_(".ln pseudo-op inside .def/.endef: ignored."));
504 demand_empty_rest_of_line ();
508 l = get_absolute_expression ();
510 /* If there is no lineno symbol, treat a .ln
511 directive as if it were a .appline directive. */
512 if (appline || current_lineno_sym == NULL)
513 new_logical_line ((char *) NULL, l - 1);
515 add_lineno (frag_now, frag_now_fix (), l);
524 l += coff_line_base - 1;
525 listing_source_line (l);
530 demand_empty_rest_of_line ();
533 /* .loc is essentially the same as .ln; parse it for assembler
537 obj_coff_loc (ignore)
538 int ignore ATTRIBUTE_UNUSED;
542 /* FIXME: Why do we need this check? We need it for ECOFF, but why
543 do we need it for COFF? */
544 if (now_seg != text_section)
546 as_warn (_(".loc outside of .text"));
547 demand_empty_rest_of_line ();
551 if (def_symbol_in_progress != NULL)
553 as_warn (_(".loc pseudo-op inside .def/.endef: ignored."));
554 demand_empty_rest_of_line ();
558 /* Skip the file number. */
560 get_absolute_expression ();
563 lineno = get_absolute_expression ();
571 lineno += coff_line_base - 1;
572 listing_source_line (lineno);
577 demand_empty_rest_of_line ();
579 add_lineno (frag_now, frag_now_fix (), lineno);
582 /* Handle the .ident pseudo-op. */
585 obj_coff_ident (ignore)
586 int ignore ATTRIBUTE_UNUSED;
588 segT current_seg = now_seg;
589 subsegT current_subseg = now_subseg;
595 /* We could put it in .comment, but that creates an extra section
596 that shouldn't be loaded into memory, which requires linker
597 changes... For now, until proven otherwise, use .rdata. */
598 sec = subseg_new (".rdata$zzz", 0);
599 bfd_set_section_flags (stdoutput, sec,
600 ((SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_DATA)
601 & bfd_applicable_section_flags (stdoutput)));
604 subseg_new (".comment", 0);
608 subseg_set (current_seg, current_subseg);
614 * Handle .def directives.
616 * One might ask : why can't we symbol_new if the symbol does not
617 * already exist and fill it with debug information. Because of
618 * the C_EFCN special symbol. It would clobber the value of the
619 * function symbol before we have a chance to notice that it is
620 * a C_EFCN. And a second reason is that the code is more clear this
621 * way. (at least I think it is :-).
625 #define SKIP_SEMI_COLON() while (*input_line_pointer++ != ';')
626 #define SKIP_WHITESPACES() while (*input_line_pointer == ' ' || \
627 *input_line_pointer == '\t') \
628 input_line_pointer++;
632 int what ATTRIBUTE_UNUSED;
634 char name_end; /* Char after the end of name */
635 char *symbol_name; /* Name of the debug symbol */
636 char *symbol_name_copy; /* Temporary copy of the name */
637 unsigned int symbol_name_length;
639 if (def_symbol_in_progress != NULL)
641 as_warn (_(".def pseudo-op used inside of .def/.endef: ignored."));
642 demand_empty_rest_of_line ();
644 } /* if not inside .def/.endef */
648 symbol_name = input_line_pointer;
649 #ifdef STRIP_UNDERSCORE
650 if (symbol_name[0] == '_' && symbol_name[1] != 0)
652 #endif /* STRIP_UNDERSCORE */
654 name_end = get_symbol_end ();
655 symbol_name_length = strlen (symbol_name);
656 symbol_name_copy = xmalloc (symbol_name_length + 1);
657 strcpy (symbol_name_copy, symbol_name);
658 #ifdef tc_canonicalize_symbol_name
659 symbol_name_copy = tc_canonicalize_symbol_name (symbol_name_copy);
662 /* Initialize the new symbol */
663 def_symbol_in_progress = symbol_make (symbol_name_copy);
664 symbol_set_frag (def_symbol_in_progress, &zero_address_frag);
665 S_SET_VALUE (def_symbol_in_progress, 0);
667 if (S_IS_STRING (def_symbol_in_progress))
668 SF_SET_STRING (def_symbol_in_progress);
670 *input_line_pointer = name_end;
672 demand_empty_rest_of_line ();
675 unsigned int dim_index;
678 obj_coff_endef (ignore)
679 int ignore ATTRIBUTE_UNUSED;
681 symbolS *symbolP = NULL;
683 /* DIM BUG FIX sac@cygnus.com */
685 if (def_symbol_in_progress == NULL)
687 as_warn (_(".endef pseudo-op used outside of .def/.endef: ignored."));
688 demand_empty_rest_of_line ();
690 } /* if not inside .def/.endef */
692 /* Set the section number according to storage class. */
693 switch (S_GET_STORAGE_CLASS (def_symbol_in_progress))
698 SF_SET_TAG (def_symbol_in_progress);
699 /* intentional fallthrough */
702 SF_SET_DEBUG (def_symbol_in_progress);
703 S_SET_SEGMENT (def_symbol_in_progress, fetch_coff_debug_section ());
707 SF_SET_LOCAL (def_symbol_in_progress); /* Do not emit this symbol. */
708 /* intentional fallthrough */
710 SF_SET_PROCESS (def_symbol_in_progress); /* Will need processing before writing */
711 /* intentional fallthrough */
715 S_SET_SEGMENT (def_symbol_in_progress, text_section);
717 name = S_GET_NAME (def_symbol_in_progress);
718 if (name[0] == '.' && name[2] == 'f' && name[3] == '\0')
724 if (! in_function ())
725 as_warn (_("`%s' symbol without preceding function"), name);
726 /* Will need relocating. */
727 SF_SET_PROCESS (def_symbol_in_progress);
733 /* The MS compilers output the actual endline, not the
734 function-relative one... we want to match without
735 changing the assembler input. */
736 SA_SET_SYM_LNNO (def_symbol_in_progress,
737 (SA_GET_SYM_LNNO (def_symbol_in_progress)
748 #endif /* C_AUTOARG */
755 /* According to the COFF documentation:
757 http://osr5doc.sco.com:1996/topics/COFF_SectNumFld.html
759 A special section number (-2) marks symbolic debugging symbols,
760 including structure/union/enumeration tag names, typedefs, and
761 the name of the file. A section number of -1 indicates that the
762 symbol has a value but is not relocatable. Examples of
763 absolute-valued symbols include automatic and register variables,
764 function arguments, and .eos symbols.
766 But from Ian Lance Taylor:
768 http://sources.redhat.com/ml/binutils/2000-08/msg00202.html
770 the actual tools all marked them as section -1. So the GNU COFF
771 assembler follows historical COFF assemblers.
773 However, it causes problems for djgpp
775 http://sources.redhat.com/ml/binutils/2000-08/msg00210.html
777 By defining STRICTCOFF, a COFF port can make the assembler to
778 follow the documented behavior. */
785 SF_SET_DEBUG (def_symbol_in_progress);
786 S_SET_SEGMENT (def_symbol_in_progress, absolute_section);
794 S_SET_SEGMENT (def_symbol_in_progress, absolute_section);
805 /* Valid but set somewhere else (s_comm, s_lcomm, colon) */
812 as_warn (_("unexpected storage class %d"),
813 S_GET_STORAGE_CLASS (def_symbol_in_progress));
815 } /* switch on storage class */
817 /* Now that we have built a debug symbol, try to find if we should
818 merge with an existing symbol or not. If a symbol is C_EFCN or
819 absolute_section or untagged SEG_DEBUG it never merges. We also
820 don't merge labels, which are in a different namespace, nor
821 symbols which have not yet been defined since they are typically
822 unique, nor do we merge tags with non-tags. */
824 /* Two cases for functions. Either debug followed by definition or
825 definition followed by debug. For definition first, we will
826 merge the debug symbol into the definition. For debug first, the
827 lineno entry MUST point to the definition function or else it
828 will point off into space when obj_crawl_symbol_chain() merges
829 the debug symbol into the real symbol. Therefor, let's presume
830 the debug symbol is a real function reference. */
832 /* FIXME-SOON If for some reason the definition label/symbol is
833 never seen, this will probably leave an undefined symbol at link
836 if (S_GET_STORAGE_CLASS (def_symbol_in_progress) == C_EFCN
837 || S_GET_STORAGE_CLASS (def_symbol_in_progress) == C_LABEL
838 || (!strcmp (bfd_get_section_name (stdoutput,
839 S_GET_SEGMENT (def_symbol_in_progress)),
841 && !SF_GET_TAG (def_symbol_in_progress))
842 || S_GET_SEGMENT (def_symbol_in_progress) == absolute_section
843 || ! symbol_constant_p (def_symbol_in_progress)
844 || (symbolP = symbol_find_base (S_GET_NAME (def_symbol_in_progress),
845 DO_NOT_STRIP)) == NULL
846 || SF_GET_TAG (def_symbol_in_progress) != SF_GET_TAG (symbolP))
848 /* If it already is at the end of the symbol list, do nothing */
849 if (def_symbol_in_progress != symbol_lastP)
851 symbol_remove (def_symbol_in_progress, &symbol_rootP, &symbol_lastP);
852 symbol_append (def_symbol_in_progress, symbol_lastP, &symbol_rootP,
858 /* This symbol already exists, merge the newly created symbol
859 into the old one. This is not mandatory. The linker can
860 handle duplicate symbols correctly. But I guess that it save
861 a *lot* of space if the assembly file defines a lot of
864 /* The debug entry (def_symbol_in_progress) is merged into the
865 previous definition. */
867 c_symbol_merge (def_symbol_in_progress, symbolP);
868 symbol_remove (def_symbol_in_progress, &symbol_rootP, &symbol_lastP);
870 def_symbol_in_progress = symbolP;
872 if (SF_GET_FUNCTION (def_symbol_in_progress)
873 || SF_GET_TAG (def_symbol_in_progress)
874 || S_GET_STORAGE_CLASS (def_symbol_in_progress) == C_STAT)
876 /* For functions, and tags, and static symbols, the symbol
877 *must* be where the debug symbol appears. Move the
878 existing symbol to the current place. */
879 /* If it already is at the end of the symbol list, do nothing */
880 if (def_symbol_in_progress != symbol_lastP)
882 symbol_remove (def_symbol_in_progress, &symbol_rootP, &symbol_lastP);
883 symbol_append (def_symbol_in_progress, symbol_lastP, &symbol_rootP, &symbol_lastP);
888 if (SF_GET_TAG (def_symbol_in_progress))
892 oldtag = symbol_find_base (S_GET_NAME (def_symbol_in_progress),
894 if (oldtag == NULL || ! SF_GET_TAG (oldtag))
895 tag_insert (S_GET_NAME (def_symbol_in_progress),
896 def_symbol_in_progress);
899 if (SF_GET_FUNCTION (def_symbol_in_progress))
901 know (sizeof (def_symbol_in_progress) <= sizeof (long));
902 set_function (def_symbol_in_progress);
903 SF_SET_PROCESS (def_symbol_in_progress);
907 /* That is, if this is the first time we've seen the
909 symbol_table_insert (def_symbol_in_progress);
910 } /* definition follows debug */
911 } /* Create the line number entry pointing to the function being defined */
913 def_symbol_in_progress = NULL;
914 demand_empty_rest_of_line ();
918 obj_coff_dim (ignore)
919 int ignore ATTRIBUTE_UNUSED;
923 if (def_symbol_in_progress == NULL)
925 as_warn (_(".dim pseudo-op used outside of .def/.endef: ignored."));
926 demand_empty_rest_of_line ();
928 } /* if not inside .def/.endef */
930 S_SET_NUMBER_AUXILIARY (def_symbol_in_progress, 1);
932 for (dim_index = 0; dim_index < DIMNUM; dim_index++)
935 SA_SET_SYM_DIMEN (def_symbol_in_progress, dim_index,
936 get_absolute_expression ());
938 switch (*input_line_pointer)
941 input_line_pointer++;
945 as_warn (_("badly formed .dim directive ignored"));
946 /* intentional fallthrough */
954 demand_empty_rest_of_line ();
958 obj_coff_line (ignore)
959 int ignore ATTRIBUTE_UNUSED;
963 if (def_symbol_in_progress == NULL)
965 /* Probably stabs-style line? */
970 this_base = get_absolute_expression ();
971 if (!strcmp (".bf", S_GET_NAME (def_symbol_in_progress)))
972 coff_line_base = this_base;
974 S_SET_NUMBER_AUXILIARY (def_symbol_in_progress, 1);
975 SA_SET_SYM_LNNO (def_symbol_in_progress, this_base);
977 demand_empty_rest_of_line ();
980 if (strcmp (".bf", S_GET_NAME (def_symbol_in_progress)) == 0)
985 listing_source_line ((unsigned int) this_base);
991 obj_coff_size (ignore)
992 int ignore ATTRIBUTE_UNUSED;
994 if (def_symbol_in_progress == NULL)
996 as_warn (_(".size pseudo-op used outside of .def/.endef ignored."));
997 demand_empty_rest_of_line ();
999 } /* if not inside .def/.endef */
1001 S_SET_NUMBER_AUXILIARY (def_symbol_in_progress, 1);
1002 SA_SET_SYM_SIZE (def_symbol_in_progress, get_absolute_expression ());
1003 demand_empty_rest_of_line ();
1007 obj_coff_scl (ignore)
1008 int ignore ATTRIBUTE_UNUSED;
1010 if (def_symbol_in_progress == NULL)
1012 as_warn (_(".scl pseudo-op used outside of .def/.endef ignored."));
1013 demand_empty_rest_of_line ();
1015 } /* if not inside .def/.endef */
1017 S_SET_STORAGE_CLASS (def_symbol_in_progress, get_absolute_expression ());
1018 demand_empty_rest_of_line ();
1022 obj_coff_tag (ignore)
1023 int ignore ATTRIBUTE_UNUSED;
1028 if (def_symbol_in_progress == NULL)
1030 as_warn (_(".tag pseudo-op used outside of .def/.endef ignored."));
1031 demand_empty_rest_of_line ();
1035 S_SET_NUMBER_AUXILIARY (def_symbol_in_progress, 1);
1036 symbol_name = input_line_pointer;
1037 name_end = get_symbol_end ();
1039 #ifdef tc_canonicalize_symbol_name
1040 symbol_name = tc_canonicalize_symbol_name (symbol_name);
1043 /* Assume that the symbol referred to by .tag is always defined.
1044 This was a bad assumption. I've added find_or_make. xoxorich. */
1045 SA_SET_SYM_TAGNDX (def_symbol_in_progress,
1046 tag_find_or_make (symbol_name));
1047 if (SA_GET_SYM_TAGNDX (def_symbol_in_progress) == 0L)
1049 as_warn (_("tag not found for .tag %s"), symbol_name);
1052 SF_SET_TAGGED (def_symbol_in_progress);
1053 *input_line_pointer = name_end;
1055 demand_empty_rest_of_line ();
1059 obj_coff_type (ignore)
1060 int ignore ATTRIBUTE_UNUSED;
1062 if (def_symbol_in_progress == NULL)
1064 as_warn (_(".type pseudo-op used outside of .def/.endef ignored."));
1065 demand_empty_rest_of_line ();
1067 } /* if not inside .def/.endef */
1069 S_SET_DATA_TYPE (def_symbol_in_progress, get_absolute_expression ());
1071 if (ISFCN (S_GET_DATA_TYPE (def_symbol_in_progress)) &&
1072 S_GET_STORAGE_CLASS (def_symbol_in_progress) != C_TPDEF)
1074 SF_SET_FUNCTION (def_symbol_in_progress);
1075 } /* is a function */
1077 demand_empty_rest_of_line ();
1081 obj_coff_val (ignore)
1082 int ignore ATTRIBUTE_UNUSED;
1084 if (def_symbol_in_progress == NULL)
1086 as_warn (_(".val pseudo-op used outside of .def/.endef ignored."));
1087 demand_empty_rest_of_line ();
1089 } /* if not inside .def/.endef */
1091 if (is_name_beginner (*input_line_pointer))
1093 char *symbol_name = input_line_pointer;
1094 char name_end = get_symbol_end ();
1096 #ifdef tc_canonicalize_symbol_name
1097 symbol_name = tc_canonicalize_symbol_name (symbol_name);
1099 if (!strcmp (symbol_name, "."))
1101 symbol_set_frag (def_symbol_in_progress, frag_now);
1102 S_SET_VALUE (def_symbol_in_progress, (valueT) frag_now_fix ());
1103 /* If the .val is != from the .def (e.g. statics) */
1105 else if (strcmp (S_GET_NAME (def_symbol_in_progress), symbol_name))
1109 exp.X_op = O_symbol;
1110 exp.X_add_symbol = symbol_find_or_make (symbol_name);
1111 exp.X_op_symbol = NULL;
1112 exp.X_add_number = 0;
1113 symbol_set_value_expression (def_symbol_in_progress, &exp);
1115 /* If the segment is undefined when the forward reference is
1116 resolved, then copy the segment id from the forward
1118 SF_SET_GET_SEGMENT (def_symbol_in_progress);
1120 /* FIXME: gcc can generate address expressions here in
1121 unusual cases (search for "obscure" in sdbout.c). We
1122 just ignore the offset here, thus generating incorrect
1123 debugging information. We ignore the rest of the line
1126 /* Otherwise, it is the name of a non debug symbol and its value
1127 will be calculated later. */
1128 *input_line_pointer = name_end;
1132 S_SET_VALUE (def_symbol_in_progress, get_absolute_expression ());
1133 } /* if symbol based */
1135 demand_empty_rest_of_line ();
1139 coff_obj_read_begin_hook ()
1141 /* These had better be the same. Usually 18 bytes. */
1143 know (sizeof (SYMENT) == sizeof (AUXENT));
1144 know (SYMESZ == AUXESZ);
1149 symbolS *coff_last_function;
1151 static symbolS *coff_last_bf;
1155 coff_frob_symbol (symp, punt)
1159 static symbolS *last_tagP;
1160 static stack *block_stack;
1161 static symbolS *set_end;
1162 symbolS *next_set_end = NULL;
1164 if (symp == &abs_symbol)
1170 if (current_lineno_sym)
1171 coff_add_linesym ((symbolS *) 0);
1174 block_stack = stack_init (512, sizeof (symbolS*));
1176 if (S_IS_WEAK (symp))
1179 S_SET_STORAGE_CLASS (symp, C_NT_WEAK);
1181 S_SET_STORAGE_CLASS (symp, C_WEAKEXT);
1185 if (!S_IS_DEFINED (symp)
1186 && !S_IS_WEAK (symp)
1187 && S_GET_STORAGE_CLASS (symp) != C_STAT)
1188 S_SET_STORAGE_CLASS (symp, C_EXT);
1190 if (!SF_GET_DEBUG (symp))
1194 if (!SF_GET_LOCAL (symp)
1195 && !SF_GET_STATICS (symp)
1196 && S_GET_STORAGE_CLASS (symp) != C_LABEL
1197 && symbol_constant_p(symp)
1198 && (real = symbol_find_base (S_GET_NAME (symp), DO_NOT_STRIP))
1199 && S_GET_STORAGE_CLASS (real) == C_NULL
1202 c_symbol_merge (symp, real);
1207 if (!S_IS_DEFINED (symp) && !SF_GET_LOCAL (symp))
1209 assert (S_GET_VALUE (symp) == 0);
1210 S_SET_EXTERNAL (symp);
1212 else if (S_GET_STORAGE_CLASS (symp) == C_NULL)
1214 if (S_GET_SEGMENT (symp) == text_section
1215 && symp != seg_info (text_section)->sym)
1216 S_SET_STORAGE_CLASS (symp, C_LABEL);
1218 S_SET_STORAGE_CLASS (symp, C_STAT);
1221 if (SF_GET_PROCESS (symp))
1223 if (S_GET_STORAGE_CLASS (symp) == C_BLOCK)
1225 if (!strcmp (S_GET_NAME (symp), ".bb"))
1226 stack_push (block_stack, (char *) &symp);
1231 begin = *(symbolS **) stack_pop (block_stack);
1233 as_warn (_("mismatched .eb"));
1235 next_set_end = begin;
1239 if (coff_last_function == 0 && SF_GET_FUNCTION (symp))
1241 union internal_auxent *auxp;
1243 coff_last_function = symp;
1244 if (S_GET_NUMBER_AUXILIARY (symp) < 1)
1245 S_SET_NUMBER_AUXILIARY (symp, 1);
1246 auxp = SYM_AUXENT (symp);
1247 memset (auxp->x_sym.x_fcnary.x_ary.x_dimen, 0,
1248 sizeof (auxp->x_sym.x_fcnary.x_ary.x_dimen));
1251 if (S_GET_STORAGE_CLASS (symp) == C_EFCN)
1253 if (coff_last_function == 0)
1254 as_fatal (_("C_EFCN symbol out of scope"));
1255 SA_SET_SYM_FSIZE (coff_last_function,
1256 (long) (S_GET_VALUE (symp)
1257 - S_GET_VALUE (coff_last_function)));
1258 next_set_end = coff_last_function;
1259 coff_last_function = 0;
1263 if (S_IS_EXTERNAL (symp))
1264 S_SET_STORAGE_CLASS (symp, C_EXT);
1265 else if (SF_GET_LOCAL (symp))
1268 if (SF_GET_FUNCTION (symp))
1269 symbol_get_bfdsym (symp)->flags |= BSF_FUNCTION;
1274 /* Double check weak symbols. */
1275 if (S_IS_WEAK (symp) && S_IS_COMMON (symp))
1276 as_bad (_("Symbol `%s' can not be both weak and common"),
1279 if (SF_GET_TAG (symp))
1281 else if (S_GET_STORAGE_CLASS (symp) == C_EOS)
1282 next_set_end = last_tagP;
1285 /* This is pretty horrible, but we have to set *punt correctly in
1286 order to call SA_SET_SYM_ENDNDX correctly. */
1287 if (! symbol_used_in_reloc_p (symp)
1288 && ((symbol_get_bfdsym (symp)->flags & BSF_SECTION_SYM) != 0
1289 || (! S_IS_EXTERNAL (symp)
1290 && ! symbol_get_tc (symp)->output
1291 && S_GET_STORAGE_CLASS (symp) != C_FILE)))
1295 if (set_end != (symbolS *) NULL
1297 && ((symbol_get_bfdsym (symp)->flags & BSF_NOT_AT_END) != 0
1298 || (S_IS_DEFINED (symp)
1299 && ! S_IS_COMMON (symp)
1300 && (! S_IS_EXTERNAL (symp) || SF_GET_FUNCTION (symp)))))
1302 SA_SET_SYM_ENDNDX (set_end, symp);
1306 if (next_set_end != NULL)
1308 if (set_end != NULL)
1309 as_warn ("Warning: internal error: forgetting to set endndx of %s",
1310 S_GET_NAME (set_end));
1311 set_end = next_set_end;
1316 && S_GET_STORAGE_CLASS (symp) == C_FCN
1317 && strcmp (S_GET_NAME (symp), ".bf") == 0)
1319 if (coff_last_bf != NULL)
1320 SA_SET_SYM_ENDNDX (coff_last_bf, symp);
1321 coff_last_bf = symp;
1324 if (coffsymbol (symbol_get_bfdsym (symp))->lineno)
1327 struct line_no *lptr;
1330 lptr = (struct line_no *) coffsymbol (symbol_get_bfdsym (symp))->lineno;
1331 for (i = 0; lptr; lptr = lptr->next)
1333 lptr = (struct line_no *) coffsymbol (symbol_get_bfdsym (symp))->lineno;
1335 /* We need i entries for line numbers, plus 1 for the first
1336 entry which BFD will override, plus 1 for the last zero
1337 entry (a marker for BFD). */
1338 l = (alent *) xmalloc ((i + 2) * sizeof (alent));
1339 coffsymbol (symbol_get_bfdsym (symp))->lineno = l;
1340 l[i + 1].line_number = 0;
1341 l[i + 1].u.sym = NULL;
1345 lptr->l.u.offset += lptr->frag->fr_address / OCTETS_PER_BYTE;
1353 coff_adjust_section_syms (abfd, sec, x)
1354 bfd *abfd ATTRIBUTE_UNUSED;
1356 PTR x ATTRIBUTE_UNUSED;
1359 segment_info_type *seginfo = seg_info (sec);
1360 int nlnno, nrelocs = 0;
1362 /* RS/6000 gas creates a .debug section manually in ppc_frob_file in
1363 tc-ppc.c. Do not get confused by it. */
1364 if (seginfo == NULL)
1367 if (!strcmp (sec->name, ".text"))
1368 nlnno = coff_n_line_nos;
1372 /* @@ Hope that none of the fixups expand to more than one reloc
1374 fixS *fixp = seginfo->fix_root;
1377 if (! fixp->fx_done)
1379 fixp = fixp->fx_next;
1382 if (bfd_get_section_size_before_reloc (sec) == 0
1385 && sec != text_section
1386 && sec != data_section
1387 && sec != bss_section)
1389 secsym = section_symbol (sec);
1390 /* This is an estimate; we'll plug in the real value using
1391 SET_SECTION_RELOCS later */
1392 SA_SET_SCN_NRELOC (secsym, nrelocs);
1393 SA_SET_SCN_NLINNO (secsym, nlnno);
1397 coff_frob_file_after_relocs ()
1399 bfd_map_over_sections (stdoutput, coff_adjust_section_syms, (char*) 0);
1402 /* Implement the .section pseudo op:
1403 .section name {, "flags"}
1405 | +--- optional flags: 'b' for bss
1407 +-- section name 'l' for lib
1411 'd' (apparently m88k for data)
1413 'r' for read-only data
1414 's' for shared data (PE)
1415 But if the argument is not a quoted string, treat it as a
1418 Note the 'a' flag is silently ignored. This allows the same
1419 .section directive to be parsed in both ELF and COFF formats. */
1422 obj_coff_section (ignore)
1423 int ignore ATTRIBUTE_UNUSED;
1425 /* Strip out the section name */
1430 flagword flags, oldflags;
1441 section_name = input_line_pointer;
1442 c = get_symbol_end ();
1444 name = xmalloc (input_line_pointer - section_name + 1);
1445 strcpy (name, section_name);
1447 *input_line_pointer = c;
1452 flags = SEC_NO_FLAGS;
1454 if (*input_line_pointer == ',')
1456 ++input_line_pointer;
1458 if (*input_line_pointer != '"')
1459 exp = get_absolute_expression ();
1462 ++input_line_pointer;
1463 while (*input_line_pointer != '"'
1464 && ! is_end_of_line[(unsigned char) *input_line_pointer])
1466 switch (*input_line_pointer)
1468 case 'b': flags |= SEC_ALLOC; flags &=~ SEC_LOAD; break;
1469 case 'n': flags &=~ SEC_LOAD; flags |= SEC_NEVER_LOAD; break;
1471 case 's': flags |= SEC_SHARED; /* fall through */
1472 case 'd': flags |= SEC_DATA | SEC_LOAD; /* fall through */
1473 case 'w': flags &=~ SEC_READONLY; break;
1475 case 'a': break; /* For compatability with ELF. */
1476 case 'x': flags |= SEC_CODE | SEC_LOAD; break;
1477 case 'r': flags |= SEC_READONLY; break;
1479 case 'i': /* STYP_INFO */
1480 case 'l': /* STYP_LIB */
1481 case 'o': /* STYP_OVER */
1482 as_warn (_("unsupported section attribute '%c'"),
1483 *input_line_pointer);
1487 as_warn(_("unknown section attribute '%c'"),
1488 *input_line_pointer);
1491 ++input_line_pointer;
1493 if (*input_line_pointer == '"')
1494 ++input_line_pointer;
1498 sec = subseg_new (name, (subsegT) exp);
1500 oldflags = bfd_get_section_flags (stdoutput, sec);
1501 if (oldflags == SEC_NO_FLAGS)
1503 /* Set section flags for a new section just created by subseg_new.
1504 Provide a default if no flags were parsed. */
1505 if (flags == SEC_NO_FLAGS)
1506 flags = TC_COFF_SECTION_DEFAULT_ATTRIBUTES;
1508 #ifdef COFF_LONG_SECTION_NAMES
1509 /* Add SEC_LINK_ONCE and SEC_LINK_DUPLICATES_DISCARD to .gnu.linkonce
1510 sections so adjust_reloc_syms in write.c will correctly handle
1511 relocs which refer to non-local symbols in these sections. */
1512 if (strncmp (name, ".gnu.linkonce", sizeof (".gnu.linkonce") - 1) == 0)
1513 flags |= SEC_LINK_ONCE | SEC_LINK_DUPLICATES_DISCARD;
1516 if (! bfd_set_section_flags (stdoutput, sec, flags))
1517 as_warn (_("error setting flags for \"%s\": %s"),
1518 bfd_section_name (stdoutput, sec),
1519 bfd_errmsg (bfd_get_error ()));
1521 else if (flags != SEC_NO_FLAGS)
1523 /* This section's attributes have already been set. Warn if the
1524 attributes don't match. */
1525 flagword matchflags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_CODE
1526 | SEC_DATA | SEC_SHARED | SEC_NEVER_LOAD);
1527 if ((flags ^ oldflags) & matchflags)
1528 as_warn (_("Ignoring changed section attributes for %s"), name);
1531 demand_empty_rest_of_line ();
1535 coff_adjust_symtab ()
1537 if (symbol_rootP == NULL
1538 || S_GET_STORAGE_CLASS (symbol_rootP) != C_FILE)
1539 c_dot_file_symbol ("fake");
1543 coff_frob_section (sec)
1549 bfd_vma size, n_entries, mask;
1550 bfd_vma align_power = (bfd_vma)sec->alignment_power + OCTETS_PER_BYTE_POWER;
1552 /* The COFF back end in BFD requires that all section sizes be
1553 rounded up to multiples of the corresponding section alignments,
1554 supposedly because standard COFF has no other way of encoding alignment
1555 for sections. If your COFF flavor has a different way of encoding
1556 section alignment, then skip this step, as TICOFF does. */
1557 size = bfd_get_section_size_before_reloc (sec);
1558 mask = ((bfd_vma) 1 << align_power) - 1;
1559 #if !defined(TICOFF)
1565 new_size = (size + mask) & ~mask;
1566 bfd_set_section_size (stdoutput, sec, new_size);
1568 /* If the size had to be rounded up, add some padding in
1569 the last non-empty frag. */
1570 fragp = seg_info (sec)->frchainP->frch_root;
1571 last = seg_info (sec)->frchainP->frch_last;
1572 while (fragp->fr_next != last)
1573 fragp = fragp->fr_next;
1574 last->fr_address = size;
1575 fragp->fr_offset += new_size - size;
1579 /* If the section size is non-zero, the section symbol needs an aux
1580 entry associated with it, indicating the size. We don't know
1581 all the values yet; coff_frob_symbol will fill them in later. */
1584 || sec == text_section
1585 || sec == data_section
1586 || sec == bss_section)
1589 symbolS *secsym = section_symbol (sec);
1591 S_SET_STORAGE_CLASS (secsym, C_STAT);
1592 S_SET_NUMBER_AUXILIARY (secsym, 1);
1593 SF_SET_STATICS (secsym);
1594 SA_SET_SCN_SCNLEN (secsym, size);
1597 /* @@ these should be in a "stabs.h" file, or maybe as.h */
1598 #ifndef STAB_SECTION_NAME
1599 #define STAB_SECTION_NAME ".stab"
1601 #ifndef STAB_STRING_SECTION_NAME
1602 #define STAB_STRING_SECTION_NAME ".stabstr"
1604 if (strcmp (STAB_STRING_SECTION_NAME, sec->name))
1608 sec = subseg_get (STAB_SECTION_NAME, 0);
1609 /* size is already rounded up, since other section will be listed first */
1610 size = bfd_get_section_size_before_reloc (strsec);
1612 n_entries = bfd_get_section_size_before_reloc (sec) / 12 - 1;
1614 /* Find first non-empty frag. It should be large enough. */
1615 fragp = seg_info (sec)->frchainP->frch_root;
1616 while (fragp && fragp->fr_fix == 0)
1617 fragp = fragp->fr_next;
1618 assert (fragp != 0 && fragp->fr_fix >= 12);
1620 /* Store the values. */
1621 p = fragp->fr_literal;
1622 bfd_h_put_16 (stdoutput, n_entries, (bfd_byte *) p + 6);
1623 bfd_h_put_32 (stdoutput, size, (bfd_byte *) p + 8);
1627 obj_coff_init_stab_section (seg)
1633 unsigned int stroff;
1635 /* Make space for this first symbol. */
1639 as_where (&file, (unsigned int *) NULL);
1640 stabstr_name = (char *) xmalloc (strlen (seg->name) + 4);
1641 strcpy (stabstr_name, seg->name);
1642 strcat (stabstr_name, "str");
1643 stroff = get_stab_string_offset (file, stabstr_name);
1645 md_number_to_chars (p, stroff, 4);
1654 return ((s == NULL) ? "(NULL)" : S_GET_NAME (s));
1662 for (symbolP = symbol_rootP; symbolP; symbolP = symbol_next (symbolP))
1664 printf (_("0x%lx: \"%s\" type = %ld, class = %d, segment = %d\n"),
1665 (unsigned long) symbolP,
1666 S_GET_NAME(symbolP),
1667 (long) S_GET_DATA_TYPE(symbolP),
1668 S_GET_STORAGE_CLASS(symbolP),
1669 (int) S_GET_SEGMENT(symbolP));
1675 #else /* not BFD_ASSEMBLER */
1678 /* This is needed because we include internal bfd things. */
1682 #include "libcoff.h"
1685 #include "coff/pe.h"
1688 /* The NOP_OPCODE is for the alignment fill value. Fill with nop so
1689 that we can stick sections together without causing trouble. */
1691 #define NOP_OPCODE 0x00
1694 /* The zeroes if symbol name is longer than 8 chars */
1695 #define S_SET_ZEROES(s,v) ((s)->sy_symbol.ost_entry.n_zeroes = (v))
1697 #define MIN(a,b) ((a) < (b)? (a) : (b))
1699 /* This vector is used to turn a gas internal segment number into a
1700 section number suitable for insertion into a coff symbol table.
1701 This must correspond to seg_info_off_by_4. */
1703 const short seg_N_TYPE[] =
1704 { /* in: segT out: N_TYPE bits */
1706 1, 2, 3, 4, 5, 6, 7, 8, 9, 10,
1707 11, 12, 13, 14, 15, 16, 17, 18, 19, 20,
1708 21, 22, 23, 24, 25, 26, 27, 28, 29, 30,
1709 31, 32, 33, 34, 35, 36, 37, 38, 39, 40,
1710 C_UNDEF_SECTION, /* SEG_UNKNOWN */
1711 C_UNDEF_SECTION, /* SEG_GOOF */
1712 C_UNDEF_SECTION, /* SEG_EXPR */
1713 C_DEBUG_SECTION, /* SEG_DEBUG */
1714 C_NTV_SECTION, /* SEG_NTV */
1715 C_PTV_SECTION, /* SEG_PTV */
1716 C_REGISTER_SECTION, /* SEG_REGISTER */
1719 int function_lineoff = -1; /* Offset in line#s where the last function
1720 started (the odd entry for line #0) */
1722 /* Structure used to keep the filenames which
1723 are too long around so that we can stick them
1724 into the string table. */
1725 struct filename_list
1728 struct filename_list *next;
1731 static struct filename_list *filename_list_head;
1732 static struct filename_list *filename_list_tail;
1734 static symbolS *last_line_symbol;
1736 /* Add 4 to the real value to get the index and compensate the
1737 negatives. This vector is used by S_GET_SEGMENT to turn a coff
1738 section number into a segment number. */
1741 static symbolS *previous_file_symbol;
1742 static int line_base;
1744 void c_symbol_merge PARAMS ((symbolS *, symbolS *));
1745 symbolS *c_section_symbol PARAMS ((char *, int));
1746 void obj_coff_section PARAMS ((int));
1747 void do_relocs_for PARAMS ((bfd *, object_headers *, unsigned long *));
1748 char * symbol_to_chars PARAMS ((bfd *, char *, symbolS *));
1749 void w_strings PARAMS ((char *));
1751 static void fixup_segment PARAMS ((segment_info_type *, segT));
1752 static void fixup_mdeps PARAMS ((fragS *, object_headers *, segT));
1753 static void fill_section PARAMS ((bfd *, object_headers *, unsigned long *));
1754 static int c_line_new PARAMS ((symbolS *, long, int, fragS *));
1755 static void w_symbols PARAMS ((bfd *, char *, symbolS *));
1756 static void adjust_stab_section PARAMS ((bfd *, segT));
1757 static void obj_coff_lcomm PARAMS ((int));
1758 static void obj_coff_text PARAMS ((int));
1759 static void obj_coff_data PARAMS ((int));
1760 static unsigned int count_entries_in_chain PARAMS ((unsigned int));
1761 static void coff_header_append PARAMS ((bfd *, object_headers *));
1762 static unsigned int yank_symbols PARAMS ((void));
1763 static unsigned int glue_symbols PARAMS ((symbolS **, symbolS **));
1764 static unsigned int tie_tags PARAMS ((void));
1765 static void crawl_symbols PARAMS ((object_headers *, bfd *));
1766 static void do_linenos_for PARAMS ((bfd *, object_headers *, unsigned long *));
1767 static void remove_subsegs PARAMS ((void));
1771 /* When not using BFD_ASSEMBLER, we permit up to 40 sections.
1773 This array maps a COFF section number into a gas section number.
1774 Because COFF uses negative section numbers, you must add 4 to the
1775 COFF section number when indexing into this array; this is done via
1776 the SEG_INFO_FROM_SECTION_NUMBER macro. This must correspond to
1779 static const segT seg_info_off_by_4[] =
1786 SEG_E0, SEG_E1, SEG_E2, SEG_E3, SEG_E4,
1787 SEG_E5, SEG_E6, SEG_E7, SEG_E8, SEG_E9,
1788 SEG_E10, SEG_E11, SEG_E12, SEG_E13, SEG_E14,
1789 SEG_E15, SEG_E16, SEG_E17, SEG_E18, SEG_E19,
1790 SEG_E20, SEG_E21, SEG_E22, SEG_E23, SEG_E24,
1791 SEG_E25, SEG_E26, SEG_E27, SEG_E28, SEG_E29,
1792 SEG_E30, SEG_E31, SEG_E32, SEG_E33, SEG_E34,
1793 SEG_E35, SEG_E36, SEG_E37, SEG_E38, SEG_E39,
1806 #define SEG_INFO_FROM_SECTION_NUMBER(x) (seg_info_off_by_4[(x)+4])
1808 static relax_addressT relax_align PARAMS ((relax_addressT, long));
1810 static relax_addressT
1811 relax_align (address, alignment)
1812 relax_addressT address;
1815 relax_addressT mask;
1816 relax_addressT new_address;
1818 mask = ~((~0) << alignment);
1819 new_address = (address + mask) & (~mask);
1820 return (new_address - address);
1827 return SEG_INFO_FROM_SECTION_NUMBER (x->sy_symbol.ost_entry.n_scnum);
1830 static unsigned int size_section PARAMS ((bfd *, unsigned int));
1832 /* Calculate the size of the frag chain and fill in the section header
1833 to contain all of it, also fill in the addr of the sections. */
1836 size_section (abfd, idx)
1837 bfd *abfd ATTRIBUTE_UNUSED;
1841 unsigned int size = 0;
1842 fragS *frag = segment_info[idx].frchainP->frch_root;
1846 size = frag->fr_address;
1847 if (frag->fr_address != size)
1849 fprintf (stderr, _("Out of step\n"));
1850 size = frag->fr_address;
1853 switch (frag->fr_type)
1855 #ifdef TC_COFF_SIZEMACHDEP
1856 case rs_machine_dependent:
1857 size += TC_COFF_SIZEMACHDEP (frag);
1863 size += frag->fr_fix;
1864 size += frag->fr_offset * frag->fr_var;
1872 size += frag->fr_fix;
1873 off = relax_align (size, frag->fr_offset);
1874 if (frag->fr_subtype != 0 && off > frag->fr_subtype)
1880 BAD_CASE (frag->fr_type);
1883 frag = frag->fr_next;
1885 segment_info[idx].scnhdr.s_size = size;
1890 count_entries_in_chain (idx)
1893 unsigned int nrelocs;
1896 /* Count the relocations. */
1897 fixup_ptr = segment_info[idx].fix_root;
1899 while (fixup_ptr != (fixS *) NULL)
1901 if (fixup_ptr->fx_done == 0 && TC_COUNT_RELOC (fixup_ptr))
1903 #if defined(TC_A29K) || defined(TC_OR32)
1904 if (fixup_ptr->fx_r_type == RELOC_CONSTH)
1913 fixup_ptr = fixup_ptr->fx_next;
1920 static int compare_external_relocs PARAMS ((const PTR, const PTR));
1922 /* AUX's ld expects relocations to be sorted. */
1925 compare_external_relocs (x, y)
1929 struct external_reloc *a = (struct external_reloc *) x;
1930 struct external_reloc *b = (struct external_reloc *) y;
1931 bfd_vma aadr = bfd_getb32 (a->r_vaddr);
1932 bfd_vma badr = bfd_getb32 (b->r_vaddr);
1933 return (aadr < badr ? -1 : badr < aadr ? 1 : 0);
1938 /* Output all the relocations for a section. */
1941 do_relocs_for (abfd, h, file_cursor)
1944 unsigned long *file_cursor;
1946 unsigned int nrelocs;
1948 unsigned long reloc_start = *file_cursor;
1950 for (idx = SEG_E0; idx < SEG_LAST; idx++)
1952 if (segment_info[idx].scnhdr.s_name[0])
1954 struct external_reloc *ext_ptr;
1955 struct external_reloc *external_reloc_vec;
1956 unsigned int external_reloc_size;
1957 unsigned int base = segment_info[idx].scnhdr.s_paddr;
1958 fixS *fix_ptr = segment_info[idx].fix_root;
1959 nrelocs = count_entries_in_chain (idx);
1962 /* Bypass this stuff if no relocs. This also incidentally
1963 avoids a SCO bug, where free(malloc(0)) tends to crash. */
1965 external_reloc_size = nrelocs * RELSZ;
1966 external_reloc_vec =
1967 (struct external_reloc *) malloc (external_reloc_size);
1969 ext_ptr = external_reloc_vec;
1971 /* Fill in the internal coff style reloc struct from the
1972 internal fix list. */
1975 struct internal_reloc intr;
1977 /* Only output some of the relocations. */
1978 if (fix_ptr->fx_done == 0 && TC_COUNT_RELOC (fix_ptr))
1980 #ifdef TC_RELOC_MANGLE
1981 TC_RELOC_MANGLE (&segment_info[idx], fix_ptr, &intr,
1985 symbolS *symbol_ptr = fix_ptr->fx_addsy;
1987 intr.r_type = TC_COFF_FIX2RTYPE (fix_ptr);
1989 base + fix_ptr->fx_frag->fr_address + fix_ptr->fx_where;
1991 #ifdef TC_KEEP_FX_OFFSET
1992 intr.r_offset = fix_ptr->fx_offset;
1997 while (symbol_ptr->sy_value.X_op == O_symbol
1998 && (! S_IS_DEFINED (symbol_ptr)
1999 || S_IS_COMMON (symbol_ptr)))
2003 /* We must avoid looping, as that can occur
2004 with a badly written program. */
2005 n = symbol_ptr->sy_value.X_add_symbol;
2006 if (n == symbol_ptr)
2011 /* Turn the segment of the symbol into an offset. */
2014 resolve_symbol_value (symbol_ptr);
2015 if (! symbol_ptr->sy_resolved)
2020 if (expr_symbol_where (symbol_ptr, &file, &line))
2021 as_bad_where (file, line,
2022 _("unresolved relocation"));
2024 as_bad (_("bad relocation: symbol `%s' not in symbol table"),
2025 S_GET_NAME (symbol_ptr));
2028 dot = segment_info[S_GET_SEGMENT (symbol_ptr)].dot;
2030 intr.r_symndx = dot->sy_number;
2032 intr.r_symndx = symbol_ptr->sy_number;
2037 (void) bfd_coff_swap_reloc_out (abfd, &intr, ext_ptr);
2039 #if defined(TC_A29K)
2040 /* The 29k has a special kludge for the high 16 bit
2041 reloc. Two relocations are emited, R_IHIHALF,
2042 and R_IHCONST. The second one doesn't contain a
2043 symbol, but uses the value for offset. */
2044 if (intr.r_type == R_IHIHALF)
2046 /* Now emit the second bit. */
2047 intr.r_type = R_IHCONST;
2048 intr.r_symndx = fix_ptr->fx_addnumber;
2049 (void) bfd_coff_swap_reloc_out (abfd, &intr, ext_ptr);
2053 #if defined(TC_OR32)
2054 /* The or32 has a special kludge for the high 16 bit
2055 reloc. Two relocations are emited, R_IHIHALF,
2056 and R_IHCONST. The second one doesn't contain a
2057 symbol, but uses the value for offset. */
2058 if (intr.r_type == R_IHIHALF)
2060 /* Now emit the second bit. */
2061 intr.r_type = R_IHCONST;
2062 intr.r_symndx = fix_ptr->fx_addnumber;
2063 (void) bfd_coff_swap_reloc_out (abfd, & intr, ext_ptr);
2069 fix_ptr = fix_ptr->fx_next;
2072 /* Sort the reloc table. */
2073 qsort ((PTR) external_reloc_vec, nrelocs,
2074 sizeof (struct external_reloc), compare_external_relocs);
2076 /* Write out the reloc table. */
2077 bfd_bwrite ((PTR) external_reloc_vec,
2078 (bfd_size_type) external_reloc_size, abfd);
2079 free (external_reloc_vec);
2081 /* Fill in section header info. */
2082 segment_info[idx].scnhdr.s_relptr = *file_cursor;
2083 *file_cursor += external_reloc_size;
2084 segment_info[idx].scnhdr.s_nreloc = nrelocs;
2089 segment_info[idx].scnhdr.s_relptr = 0;
2094 /* Set relocation_size field in file headers. */
2095 H_SET_RELOCATION_SIZE (h, *file_cursor - reloc_start, 0);
2098 /* Run through a frag chain and write out the data to go with it, fill
2099 in the scnhdrs with the info on the file postions. */
2102 fill_section (abfd, h, file_cursor)
2104 object_headers *h ATTRIBUTE_UNUSED;
2105 unsigned long *file_cursor;
2108 unsigned int paddr = 0;
2110 for (i = SEG_E0; i < SEG_UNKNOWN; i++)
2112 unsigned int offset = 0;
2113 struct internal_scnhdr *s = &(segment_info[i].scnhdr);
2119 fragS *frag = segment_info[i].frchainP->frch_root;
2120 char *buffer = NULL;
2126 buffer = xmalloc (s->s_size);
2127 s->s_scnptr = *file_cursor;
2129 know (s->s_paddr == paddr);
2131 if (strcmp (s->s_name, ".text") == 0)
2132 s->s_flags |= STYP_TEXT;
2133 else if (strcmp (s->s_name, ".data") == 0)
2134 s->s_flags |= STYP_DATA;
2135 else if (strcmp (s->s_name, ".bss") == 0)
2138 s->s_flags |= STYP_BSS;
2140 /* @@ Should make the i386 and a29k coff targets define
2141 COFF_NOLOAD_PROBLEM, and have only one test here. */
2145 #ifndef COFF_NOLOAD_PROBLEM
2146 /* Apparently the SVR3 linker (and exec syscall) and UDI
2147 mondfe progrem are confused by noload sections. */
2148 s->s_flags |= STYP_NOLOAD;
2154 else if (strcmp (s->s_name, ".lit") == 0)
2155 s->s_flags = STYP_LIT | STYP_TEXT;
2156 else if (strcmp (s->s_name, ".init") == 0)
2157 s->s_flags |= STYP_TEXT;
2158 else if (strcmp (s->s_name, ".fini") == 0)
2159 s->s_flags |= STYP_TEXT;
2160 else if (strncmp (s->s_name, ".comment", 8) == 0)
2161 s->s_flags |= STYP_INFO;
2165 unsigned int fill_size;
2166 switch (frag->fr_type)
2168 case rs_machine_dependent:
2171 memcpy (buffer + frag->fr_address,
2173 (unsigned int) frag->fr_fix);
2174 offset += frag->fr_fix;
2186 memcpy (buffer + frag->fr_address,
2188 (unsigned int) frag->fr_fix);
2189 offset += frag->fr_fix;
2192 fill_size = frag->fr_var;
2193 if (fill_size && frag->fr_offset > 0)
2196 unsigned int off = frag->fr_fix;
2197 for (count = frag->fr_offset; count; count--)
2199 if (fill_size + frag->fr_address + off <= s->s_size)
2201 memcpy (buffer + frag->fr_address + off,
2202 frag->fr_literal + frag->fr_fix,
2205 offset += fill_size;
2210 case rs_broken_word:
2215 frag = frag->fr_next;
2220 if (s->s_scnptr != 0)
2222 bfd_bwrite (buffer, s->s_size, abfd);
2223 *file_cursor += s->s_size;
2232 /* Coff file generation & utilities. */
2235 coff_header_append (abfd, h)
2242 #ifdef COFF_LONG_SECTION_NAMES
2243 unsigned long string_size = 4;
2246 bfd_seek (abfd, (file_ptr) 0, 0);
2248 #ifndef OBJ_COFF_OMIT_OPTIONAL_HEADER
2249 H_SET_MAGIC_NUMBER (h, COFF_MAGIC);
2250 H_SET_VERSION_STAMP (h, 0);
2251 H_SET_ENTRY_POINT (h, 0);
2252 H_SET_TEXT_START (h, segment_info[SEG_E0].frchainP->frch_root->fr_address);
2253 H_SET_DATA_START (h, segment_info[SEG_E1].frchainP->frch_root->fr_address);
2254 H_SET_SIZEOF_OPTIONAL_HEADER (h, bfd_coff_swap_aouthdr_out(abfd, &h->aouthdr,
2256 #else /* defined (OBJ_COFF_OMIT_OPTIONAL_HEADER) */
2257 H_SET_SIZEOF_OPTIONAL_HEADER (h, 0);
2258 #endif /* defined (OBJ_COFF_OMIT_OPTIONAL_HEADER) */
2260 i = bfd_coff_swap_filehdr_out (abfd, &h->filehdr, buffer);
2262 bfd_bwrite (buffer, (bfd_size_type) i, abfd);
2263 bfd_bwrite (buffero, (bfd_size_type) H_GET_SIZEOF_OPTIONAL_HEADER (h), abfd);
2265 for (i = SEG_E0; i < SEG_LAST; i++)
2267 if (segment_info[i].scnhdr.s_name[0])
2271 #ifdef COFF_LONG_SECTION_NAMES
2272 /* Support long section names as found in PE. This code
2273 must coordinate with that in write_object_file and
2275 if (strlen (segment_info[i].name) > SCNNMLEN)
2277 memset (segment_info[i].scnhdr.s_name, 0, SCNNMLEN);
2278 sprintf (segment_info[i].scnhdr.s_name, "/%lu", string_size);
2279 string_size += strlen (segment_info[i].name) + 1;
2282 size = bfd_coff_swap_scnhdr_out (abfd,
2283 &(segment_info[i].scnhdr),
2286 as_bad (_("bfd_coff_swap_scnhdr_out failed"));
2287 bfd_bwrite (buffer, (bfd_size_type) size, abfd);
2293 symbol_to_chars (abfd, where, symbolP)
2298 unsigned int numaux = symbolP->sy_symbol.ost_entry.n_numaux;
2302 /* Turn any symbols with register attributes into abs symbols. */
2303 if (S_GET_SEGMENT (symbolP) == reg_section)
2304 S_SET_SEGMENT (symbolP, absolute_section);
2306 /* At the same time, relocate all symbols to their output value. */
2308 val = (segment_info[S_GET_SEGMENT (symbolP)].scnhdr.s_paddr
2309 + S_GET_VALUE (symbolP));
2311 val = S_GET_VALUE (symbolP);
2314 S_SET_VALUE (symbolP, val);
2316 symbolP->sy_symbol.ost_entry.n_value = val;
2318 where += bfd_coff_swap_sym_out (abfd, &symbolP->sy_symbol.ost_entry,
2321 for (i = 0; i < numaux; i++)
2323 where += bfd_coff_swap_aux_out (abfd,
2324 &symbolP->sy_symbol.ost_auxent[i],
2325 S_GET_DATA_TYPE (symbolP),
2326 S_GET_STORAGE_CLASS (symbolP),
2334 coff_obj_symbol_new_hook (symbolP)
2337 char underscore = 0; /* Symbol has leading _ */
2339 /* Effective symbol. */
2340 /* Store the pointer in the offset. */
2341 S_SET_ZEROES (symbolP, 0L);
2342 S_SET_DATA_TYPE (symbolP, T_NULL);
2343 S_SET_STORAGE_CLASS (symbolP, 0);
2344 S_SET_NUMBER_AUXILIARY (symbolP, 0);
2345 /* Additional information. */
2346 symbolP->sy_symbol.ost_flags = 0;
2347 /* Auxiliary entries. */
2348 memset ((char *) &symbolP->sy_symbol.ost_auxent[0], 0, AUXESZ);
2350 if (S_IS_STRING (symbolP))
2351 SF_SET_STRING (symbolP);
2352 if (!underscore && S_IS_LOCAL (symbolP))
2353 SF_SET_LOCAL (symbolP);
2356 /* Handle .ln directives. */
2359 obj_coff_ln (appline)
2364 if (! appline && def_symbol_in_progress != NULL)
2366 /* Wrong context. */
2367 as_warn (_(".ln pseudo-op inside .def/.endef: ignored."));
2368 demand_empty_rest_of_line ();
2372 l = get_absolute_expression ();
2373 c_line_new (0, frag_now_fix (), l, frag_now);
2376 new_logical_line ((char *) NULL, l - 1);
2386 listing_source_line ((unsigned int) l);
2391 demand_empty_rest_of_line ();
2394 /* Handle .def directives.
2396 One might ask : why can't we symbol_new if the symbol does not
2397 already exist and fill it with debug information. Because of
2398 the C_EFCN special symbol. It would clobber the value of the
2399 function symbol before we have a chance to notice that it is
2400 a C_EFCN. And a second reason is that the code is more clear this
2401 way. (at least I think it is :-). */
2403 #define SKIP_SEMI_COLON() while (*input_line_pointer++ != ';')
2404 #define SKIP_WHITESPACES() while (*input_line_pointer == ' ' || \
2405 *input_line_pointer == '\t') \
2406 input_line_pointer++;
2410 int what ATTRIBUTE_UNUSED;
2412 char name_end; /* Char after the end of name. */
2413 char *symbol_name; /* Name of the debug symbol. */
2414 char *symbol_name_copy; /* Temporary copy of the name. */
2415 unsigned int symbol_name_length;
2417 if (def_symbol_in_progress != NULL)
2419 as_warn (_(".def pseudo-op used inside of .def/.endef: ignored."));
2420 demand_empty_rest_of_line ();
2424 SKIP_WHITESPACES ();
2426 def_symbol_in_progress = (symbolS *) obstack_alloc (¬es, sizeof (*def_symbol_in_progress));
2427 memset (def_symbol_in_progress, 0, sizeof (*def_symbol_in_progress));
2429 symbol_name = input_line_pointer;
2430 name_end = get_symbol_end ();
2431 symbol_name_length = strlen (symbol_name);
2432 symbol_name_copy = xmalloc (symbol_name_length + 1);
2433 strcpy (symbol_name_copy, symbol_name);
2434 #ifdef tc_canonicalize_symbol_name
2435 symbol_name_copy = tc_canonicalize_symbol_name (symbol_name_copy);
2438 /* Initialize the new symbol. */
2439 #ifdef STRIP_UNDERSCORE
2440 S_SET_NAME (def_symbol_in_progress, (*symbol_name_copy == '_'
2441 ? symbol_name_copy + 1
2442 : symbol_name_copy));
2443 #else /* STRIP_UNDERSCORE */
2444 S_SET_NAME (def_symbol_in_progress, symbol_name_copy);
2445 #endif /* STRIP_UNDERSCORE */
2446 /* free(symbol_name_copy); */
2447 def_symbol_in_progress->sy_name_offset = (unsigned long) ~0;
2448 def_symbol_in_progress->sy_number = ~0;
2449 def_symbol_in_progress->sy_frag = &zero_address_frag;
2450 S_SET_VALUE (def_symbol_in_progress, 0);
2452 if (S_IS_STRING (def_symbol_in_progress))
2453 SF_SET_STRING (def_symbol_in_progress);
2455 *input_line_pointer = name_end;
2457 demand_empty_rest_of_line ();
2460 unsigned int dim_index;
2463 obj_coff_endef (ignore)
2464 int ignore ATTRIBUTE_UNUSED;
2466 symbolS *symbolP = 0;
2467 /* DIM BUG FIX sac@cygnus.com */
2469 if (def_symbol_in_progress == NULL)
2471 as_warn (_(".endef pseudo-op used outside of .def/.endef: ignored."));
2472 demand_empty_rest_of_line ();
2476 /* Set the section number according to storage class. */
2477 switch (S_GET_STORAGE_CLASS (def_symbol_in_progress))
2482 SF_SET_TAG (def_symbol_in_progress);
2483 /* Intentional fallthrough. */
2487 SF_SET_DEBUG (def_symbol_in_progress);
2488 S_SET_SEGMENT (def_symbol_in_progress, SEG_DEBUG);
2492 /* Do not emit this symbol. */
2493 SF_SET_LOCAL (def_symbol_in_progress);
2494 /* Intentional fallthrough. */
2497 /* Will need processing before writing. */
2498 SF_SET_PROCESS (def_symbol_in_progress);
2499 /* Intentional fallthrough. */
2502 S_SET_SEGMENT (def_symbol_in_progress, SEG_E0);
2504 if (strcmp (S_GET_NAME (def_symbol_in_progress), ".bf") == 0)
2506 if (function_lineoff < 0)
2507 fprintf (stderr, _("`.bf' symbol without preceding function\n"));
2509 SA_GET_SYM_LNNOPTR (last_line_symbol) = function_lineoff;
2511 SF_SET_PROCESS (last_line_symbol);
2512 SF_SET_ADJ_LNNOPTR (last_line_symbol);
2513 SF_SET_PROCESS (def_symbol_in_progress);
2514 function_lineoff = -1;
2517 /* Value is always set to . */
2518 def_symbol_in_progress->sy_frag = frag_now;
2519 S_SET_VALUE (def_symbol_in_progress, (valueT) frag_now_fix ());
2524 #endif /* C_AUTOARG */
2534 SF_SET_DEBUG (def_symbol_in_progress);
2535 S_SET_SEGMENT (def_symbol_in_progress, absolute_section);
2545 /* Valid but set somewhere else (s_comm, s_lcomm, colon). */
2551 as_warn (_("unexpected storage class %d"), S_GET_STORAGE_CLASS (def_symbol_in_progress));
2555 /* Now that we have built a debug symbol, try to find if we should
2556 merge with an existing symbol or not. If a symbol is C_EFCN or
2557 absolute_section or untagged SEG_DEBUG it never merges. We also
2558 don't merge labels, which are in a different namespace, nor
2559 symbols which have not yet been defined since they are typically
2560 unique, nor do we merge tags with non-tags. */
2562 /* Two cases for functions. Either debug followed by definition or
2563 definition followed by debug. For definition first, we will
2564 merge the debug symbol into the definition. For debug first, the
2565 lineno entry MUST point to the definition function or else it
2566 will point off into space when crawl_symbols() merges the debug
2567 symbol into the real symbol. Therefor, let's presume the debug
2568 symbol is a real function reference. */
2570 /* FIXME-SOON If for some reason the definition label/symbol is
2571 never seen, this will probably leave an undefined symbol at link
2574 if (S_GET_STORAGE_CLASS (def_symbol_in_progress) == C_EFCN
2575 || S_GET_STORAGE_CLASS (def_symbol_in_progress) == C_LABEL
2576 || (S_GET_SEGMENT (def_symbol_in_progress) == SEG_DEBUG
2577 && !SF_GET_TAG (def_symbol_in_progress))
2578 || S_GET_SEGMENT (def_symbol_in_progress) == absolute_section
2579 || def_symbol_in_progress->sy_value.X_op != O_constant
2580 || (symbolP = symbol_find_base (S_GET_NAME (def_symbol_in_progress), DO_NOT_STRIP)) == NULL
2581 || (SF_GET_TAG (def_symbol_in_progress) != SF_GET_TAG (symbolP)))
2583 symbol_append (def_symbol_in_progress, symbol_lastP, &symbol_rootP,
2588 /* This symbol already exists, merge the newly created symbol
2589 into the old one. This is not mandatory. The linker can
2590 handle duplicate symbols correctly. But I guess that it save
2591 a *lot* of space if the assembly file defines a lot of
2594 /* The debug entry (def_symbol_in_progress) is merged into the
2595 previous definition. */
2597 c_symbol_merge (def_symbol_in_progress, symbolP);
2598 /* FIXME-SOON Should *def_symbol_in_progress be free'd? xoxorich. */
2599 def_symbol_in_progress = symbolP;
2601 if (SF_GET_FUNCTION (def_symbol_in_progress)
2602 || SF_GET_TAG (def_symbol_in_progress)
2603 || S_GET_STORAGE_CLASS (def_symbol_in_progress) == C_STAT)
2605 /* For functions, and tags, and static symbols, the symbol
2606 *must* be where the debug symbol appears. Move the
2607 existing symbol to the current place. */
2608 /* If it already is at the end of the symbol list, do nothing. */
2609 if (def_symbol_in_progress != symbol_lastP)
2611 symbol_remove (def_symbol_in_progress, &symbol_rootP,
2613 symbol_append (def_symbol_in_progress, symbol_lastP,
2614 &symbol_rootP, &symbol_lastP);
2619 if (SF_GET_TAG (def_symbol_in_progress))
2623 oldtag = symbol_find_base (S_GET_NAME (def_symbol_in_progress),
2625 if (oldtag == NULL || ! SF_GET_TAG (oldtag))
2626 tag_insert (S_GET_NAME (def_symbol_in_progress),
2627 def_symbol_in_progress);
2630 if (SF_GET_FUNCTION (def_symbol_in_progress))
2632 know (sizeof (def_symbol_in_progress) <= sizeof (long));
2634 = c_line_new (def_symbol_in_progress, 0, 0, &zero_address_frag);
2636 SF_SET_PROCESS (def_symbol_in_progress);
2638 if (symbolP == NULL)
2640 /* That is, if this is the first time we've seen the
2642 symbol_table_insert (def_symbol_in_progress);
2646 def_symbol_in_progress = NULL;
2647 demand_empty_rest_of_line ();
2651 obj_coff_dim (ignore)
2652 int ignore ATTRIBUTE_UNUSED;
2656 if (def_symbol_in_progress == NULL)
2658 as_warn (_(".dim pseudo-op used outside of .def/.endef: ignored."));
2659 demand_empty_rest_of_line ();
2663 S_SET_NUMBER_AUXILIARY (def_symbol_in_progress, 1);
2665 for (dim_index = 0; dim_index < DIMNUM; dim_index++)
2667 SKIP_WHITESPACES ();
2668 SA_SET_SYM_DIMEN (def_symbol_in_progress, dim_index,
2669 get_absolute_expression ());
2671 switch (*input_line_pointer)
2674 input_line_pointer++;
2678 as_warn (_("badly formed .dim directive ignored"));
2679 /* Intentional fallthrough. */
2688 demand_empty_rest_of_line ();
2692 obj_coff_line (ignore)
2693 int ignore ATTRIBUTE_UNUSED;
2698 if (def_symbol_in_progress == NULL)
2704 name = S_GET_NAME (def_symbol_in_progress);
2705 this_base = get_absolute_expression ();
2707 /* Only .bf symbols indicate the use of a new base line number; the
2708 line numbers associated with .ef, .bb, .eb are relative to the
2709 start of the containing function. */
2710 if (!strcmp (".bf", name))
2712 #if 0 /* XXX Can we ever have line numbers going backwards? */
2713 if (this_base > line_base)
2715 line_base = this_base;
2721 listing_source_line ((unsigned int) line_base);
2726 S_SET_NUMBER_AUXILIARY (def_symbol_in_progress, 1);
2727 SA_SET_SYM_LNNO (def_symbol_in_progress, this_base);
2729 demand_empty_rest_of_line ();
2733 obj_coff_size (ignore)
2734 int ignore ATTRIBUTE_UNUSED;
2736 if (def_symbol_in_progress == NULL)
2738 as_warn (_(".size pseudo-op used outside of .def/.endef ignored."));
2739 demand_empty_rest_of_line ();
2743 S_SET_NUMBER_AUXILIARY (def_symbol_in_progress, 1);
2744 SA_SET_SYM_SIZE (def_symbol_in_progress, get_absolute_expression ());
2745 demand_empty_rest_of_line ();
2749 obj_coff_scl (ignore)
2750 int ignore ATTRIBUTE_UNUSED;
2752 if (def_symbol_in_progress == NULL)
2754 as_warn (_(".scl pseudo-op used outside of .def/.endef ignored."));
2755 demand_empty_rest_of_line ();
2759 S_SET_STORAGE_CLASS (def_symbol_in_progress, get_absolute_expression ());
2760 demand_empty_rest_of_line ();
2764 obj_coff_tag (ignore)
2765 int ignore ATTRIBUTE_UNUSED;
2770 if (def_symbol_in_progress == NULL)
2772 as_warn (_(".tag pseudo-op used outside of .def/.endef ignored."));
2773 demand_empty_rest_of_line ();
2777 S_SET_NUMBER_AUXILIARY (def_symbol_in_progress, 1);
2778 symbol_name = input_line_pointer;
2779 name_end = get_symbol_end ();
2780 #ifdef tc_canonicalize_symbol_name
2781 symbol_name = tc_canonicalize_symbol_name (symbol_name);
2784 /* Assume that the symbol referred to by .tag is always defined.
2785 This was a bad assumption. I've added find_or_make. xoxorich. */
2786 SA_SET_SYM_TAGNDX (def_symbol_in_progress,
2787 (long) tag_find_or_make (symbol_name));
2788 if (SA_GET_SYM_TAGNDX (def_symbol_in_progress) == 0L)
2789 as_warn (_("tag not found for .tag %s"), symbol_name);
2791 SF_SET_TAGGED (def_symbol_in_progress);
2792 *input_line_pointer = name_end;
2794 demand_empty_rest_of_line ();
2798 obj_coff_type (ignore)
2799 int ignore ATTRIBUTE_UNUSED;
2801 if (def_symbol_in_progress == NULL)
2803 as_warn (_(".type pseudo-op used outside of .def/.endef ignored."));
2804 demand_empty_rest_of_line ();
2808 S_SET_DATA_TYPE (def_symbol_in_progress, get_absolute_expression ());
2810 if (ISFCN (S_GET_DATA_TYPE (def_symbol_in_progress)) &&
2811 S_GET_STORAGE_CLASS (def_symbol_in_progress) != C_TPDEF)
2812 SF_SET_FUNCTION (def_symbol_in_progress);
2814 demand_empty_rest_of_line ();
2818 obj_coff_val (ignore)
2819 int ignore ATTRIBUTE_UNUSED;
2821 if (def_symbol_in_progress == NULL)
2823 as_warn (_(".val pseudo-op used outside of .def/.endef ignored."));
2824 demand_empty_rest_of_line ();
2828 if (is_name_beginner (*input_line_pointer))
2830 char *symbol_name = input_line_pointer;
2831 char name_end = get_symbol_end ();
2833 #ifdef tc_canonicalize_symbol_name
2834 symbol_name = tc_canonicalize_symbol_name (symbol_name);
2837 if (!strcmp (symbol_name, "."))
2839 def_symbol_in_progress->sy_frag = frag_now;
2840 S_SET_VALUE (def_symbol_in_progress, (valueT) frag_now_fix ());
2841 /* If the .val is != from the .def (e.g. statics). */
2843 else if (strcmp (S_GET_NAME (def_symbol_in_progress), symbol_name))
2845 def_symbol_in_progress->sy_value.X_op = O_symbol;
2846 def_symbol_in_progress->sy_value.X_add_symbol =
2847 symbol_find_or_make (symbol_name);
2848 def_symbol_in_progress->sy_value.X_op_symbol = NULL;
2849 def_symbol_in_progress->sy_value.X_add_number = 0;
2851 /* If the segment is undefined when the forward reference is
2852 resolved, then copy the segment id from the forward
2854 SF_SET_GET_SEGMENT (def_symbol_in_progress);
2856 /* FIXME: gcc can generate address expressions here in
2857 unusual cases (search for "obscure" in sdbout.c). We
2858 just ignore the offset here, thus generating incorrect
2859 debugging information. We ignore the rest of the line
2862 /* Otherwise, it is the name of a non debug symbol and
2863 its value will be calculated later. */
2864 *input_line_pointer = name_end;
2866 /* FIXME: this is to avoid an error message in the
2867 FIXME case mentioned just above. */
2868 while (! is_end_of_line[(unsigned char) *input_line_pointer])
2869 ++input_line_pointer;
2873 S_SET_VALUE (def_symbol_in_progress,
2874 (valueT) get_absolute_expression ());
2875 } /* if symbol based */
2877 demand_empty_rest_of_line ();
2882 /* Handle the .linkonce pseudo-op. This is parsed by s_linkonce in
2883 read.c, which then calls this object file format specific routine. */
2886 obj_coff_pe_handle_link_once (type)
2887 enum linkonce_type type;
2889 seg_info (now_seg)->scnhdr.s_flags |= IMAGE_SCN_LNK_COMDAT;
2891 /* We store the type in the seg_info structure, and use it to set up
2892 the auxiliary entry for the section symbol in c_section_symbol. */
2893 seg_info (now_seg)->linkonce = type;
2899 coff_obj_read_begin_hook ()
2901 /* These had better be the same. Usually 18 bytes. */
2903 know (sizeof (SYMENT) == sizeof (AUXENT));
2904 know (SYMESZ == AUXESZ);
2909 /* This function runs through the symbol table and puts all the
2910 externals onto another chain. */
2912 /* The chain of globals. */
2913 symbolS *symbol_globalP;
2914 symbolS *symbol_global_lastP;
2916 /* The chain of externals. */
2917 symbolS *symbol_externP;
2918 symbolS *symbol_extern_lastP;
2921 symbolS *last_functionP;
2922 static symbolS *last_bfP;
2929 unsigned int symbol_number = 0;
2930 unsigned int last_file_symno = 0;
2932 struct filename_list *filename_list_scan = filename_list_head;
2934 for (symbolP = symbol_rootP;
2936 symbolP = symbolP ? symbol_next (symbolP) : symbol_rootP)
2938 if (symbolP->sy_mri_common)
2940 if (S_GET_STORAGE_CLASS (symbolP) == C_EXT
2942 || S_GET_STORAGE_CLASS (symbolP) == C_NT_WEAK
2944 || S_GET_STORAGE_CLASS (symbolP) == C_WEAKEXT)
2945 as_bad (_("%s: global symbols not supported in common sections"),
2946 S_GET_NAME (symbolP));
2947 symbol_remove (symbolP, &symbol_rootP, &symbol_lastP);
2951 if (!SF_GET_DEBUG (symbolP))
2953 /* Debug symbols do not need all this rubbish. */
2954 symbolS *real_symbolP;
2956 /* L* and C_EFCN symbols never merge. */
2957 if (!SF_GET_LOCAL (symbolP)
2958 && !SF_GET_STATICS (symbolP)
2959 && S_GET_STORAGE_CLASS (symbolP) != C_LABEL
2960 && symbolP->sy_value.X_op == O_constant
2961 && (real_symbolP = symbol_find_base (S_GET_NAME (symbolP), DO_NOT_STRIP))
2962 && real_symbolP != symbolP)
2964 /* FIXME-SOON: where do dups come from?
2965 Maybe tag references before definitions? xoxorich. */
2966 /* Move the debug data from the debug symbol to the
2967 real symbol. Do NOT do the oposite (i.e. move from
2968 real symbol to debug symbol and remove real symbol from the
2969 list.) Because some pointers refer to the real symbol
2970 whereas no pointers refer to the debug symbol. */
2971 c_symbol_merge (symbolP, real_symbolP);
2972 /* Replace the current symbol by the real one. */
2973 /* The symbols will never be the last or the first
2974 because : 1st symbol is .file and 3 last symbols are
2975 .text, .data, .bss. */
2976 symbol_remove (real_symbolP, &symbol_rootP, &symbol_lastP);
2977 symbol_insert (real_symbolP, symbolP, &symbol_rootP, &symbol_lastP);
2978 symbol_remove (symbolP, &symbol_rootP, &symbol_lastP);
2979 symbolP = real_symbolP;
2982 if (flag_readonly_data_in_text && (S_GET_SEGMENT (symbolP) == SEG_E1))
2983 S_SET_SEGMENT (symbolP, SEG_E0);
2985 resolve_symbol_value (symbolP);
2987 if (S_GET_STORAGE_CLASS (symbolP) == C_NULL)
2989 if (!S_IS_DEFINED (symbolP) && !SF_GET_LOCAL (symbolP))
2991 S_SET_EXTERNAL (symbolP);
2994 else if (S_GET_SEGMENT (symbolP) == SEG_E0)
2995 S_SET_STORAGE_CLASS (symbolP, C_LABEL);
2998 S_SET_STORAGE_CLASS (symbolP, C_STAT);
3001 /* Mainly to speed up if not -g. */
3002 if (SF_GET_PROCESS (symbolP))
3004 /* Handle the nested blocks auxiliary info. */
3005 if (S_GET_STORAGE_CLASS (symbolP) == C_BLOCK)
3007 if (!strcmp (S_GET_NAME (symbolP), ".bb"))
3008 stack_push (block_stack, (char *) &symbolP);
3012 symbolS *begin_symbolP;
3014 begin_symbolP = *(symbolS **) stack_pop (block_stack);
3015 if (begin_symbolP == (symbolS *) 0)
3016 as_warn (_("mismatched .eb"));
3018 SA_SET_SYM_ENDNDX (begin_symbolP, symbol_number + 2);
3021 /* If we are able to identify the type of a function, and we
3022 are out of a function (last_functionP == 0) then, the
3023 function symbol will be associated with an auxiliary
3025 if (last_functionP == (symbolS *) 0 &&
3026 SF_GET_FUNCTION (symbolP))
3028 last_functionP = symbolP;
3030 if (S_GET_NUMBER_AUXILIARY (symbolP) < 1)
3031 S_SET_NUMBER_AUXILIARY (symbolP, 1);
3033 /* Clobber possible stale .dim information. */
3035 /* Iffed out by steve - this fries the lnnoptr info too. */
3036 bzero (symbolP->sy_symbol.ost_auxent[0].x_sym.x_fcnary.x_ary.x_dimen,
3037 sizeof (symbolP->sy_symbol.ost_auxent[0].x_sym.x_fcnary.x_ary.x_dimen));
3040 if (S_GET_STORAGE_CLASS (symbolP) == C_FCN)
3042 if (strcmp (S_GET_NAME (symbolP), ".bf") == 0)
3044 if (last_bfP != NULL)
3045 SA_SET_SYM_ENDNDX (last_bfP, symbol_number);
3049 else if (S_GET_STORAGE_CLASS (symbolP) == C_EFCN)
3051 /* I don't even know if this is needed for sdb. But
3052 the standard assembler generates it, so... */
3053 if (last_functionP == (symbolS *) 0)
3054 as_fatal (_("C_EFCN symbol out of scope"));
3055 SA_SET_SYM_FSIZE (last_functionP,
3056 (long) (S_GET_VALUE (symbolP) -
3057 S_GET_VALUE (last_functionP)));
3058 SA_SET_SYM_ENDNDX (last_functionP, symbol_number);
3059 last_functionP = (symbolS *) 0;
3063 else if (SF_GET_TAG (symbolP))
3065 /* First descriptor of a structure must point to
3066 the first slot after the structure description. */
3067 last_tagP = symbolP;
3070 else if (S_GET_STORAGE_CLASS (symbolP) == C_EOS)
3072 /* +2 take in account the current symbol. */
3073 SA_SET_SYM_ENDNDX (last_tagP, symbol_number + 2);
3075 else if (S_GET_STORAGE_CLASS (symbolP) == C_FILE)
3077 /* If the filename was too long to fit in the
3078 auxent, put it in the string table. */
3079 if (SA_GET_FILE_FNAME_ZEROS (symbolP) == 0
3080 && SA_GET_FILE_FNAME_OFFSET (symbolP) != 0)
3082 SA_SET_FILE_FNAME_OFFSET (symbolP, string_byte_count);
3083 string_byte_count += strlen (filename_list_scan->filename) + 1;
3084 filename_list_scan = filename_list_scan->next;
3086 if (S_GET_VALUE (symbolP))
3088 S_SET_VALUE (symbolP, last_file_symno);
3089 last_file_symno = symbol_number;
3093 #ifdef tc_frob_coff_symbol
3094 tc_frob_coff_symbol (symbolP);
3097 /* We must put the external symbols apart. The loader
3098 does not bomb if we do not. But the references in
3099 the endndx field for a .bb symbol are not corrected
3100 if an external symbol is removed between .bb and .be.
3101 I.e in the following case :
3102 [20] .bb endndx = 22
3105 ld will move the symbol 21 to the end of the list but
3106 endndx will still be 22 instead of 21. */
3108 if (SF_GET_LOCAL (symbolP))
3110 /* Remove C_EFCN and LOCAL (L...) symbols. */
3111 /* Next pointer remains valid. */
3112 symbol_remove (symbolP, &symbol_rootP, &symbol_lastP);
3115 else if (symbolP->sy_value.X_op == O_symbol
3116 && (! S_IS_DEFINED (symbolP) || S_IS_COMMON (symbolP)))
3118 /* Skip symbols which were equated to undefined or common
3120 symbol_remove (symbolP, &symbol_rootP, &symbol_lastP);
3122 else if (!S_IS_DEFINED (symbolP)
3123 && !S_IS_DEBUG (symbolP)
3124 && !SF_GET_STATICS (symbolP)
3125 && (S_GET_STORAGE_CLASS (symbolP) == C_EXT
3127 || S_GET_STORAGE_CLASS (symbolP) == C_NT_WEAK
3129 || S_GET_STORAGE_CLASS (symbolP) == C_WEAKEXT))
3131 /* If external, Remove from the list. */
3132 symbolS *hold = symbol_previous (symbolP);
3134 symbol_remove (symbolP, &symbol_rootP, &symbol_lastP);
3135 symbol_clear_list_pointers (symbolP);
3136 symbol_append (symbolP, symbol_extern_lastP, &symbol_externP, &symbol_extern_lastP);
3139 else if (! S_IS_DEBUG (symbolP)
3140 && ! SF_GET_STATICS (symbolP)
3141 && ! SF_GET_FUNCTION (symbolP)
3142 && (S_GET_STORAGE_CLASS (symbolP) == C_EXT
3144 || S_GET_STORAGE_CLASS (symbolP) == C_NT_WEAK
3146 || S_GET_STORAGE_CLASS (symbolP) == C_NT_WEAK))
3148 symbolS *hold = symbol_previous (symbolP);
3150 /* The O'Reilly COFF book says that defined global symbols
3151 come at the end of the symbol table, just before
3152 undefined global symbols. */
3153 symbol_remove (symbolP, &symbol_rootP, &symbol_lastP);
3154 symbol_clear_list_pointers (symbolP);
3155 symbol_append (symbolP, symbol_global_lastP, &symbol_globalP,
3156 &symbol_global_lastP);
3161 if (SF_GET_STRING (symbolP))
3163 symbolP->sy_name_offset = string_byte_count;
3164 string_byte_count += strlen (S_GET_NAME (symbolP)) + 1;
3168 symbolP->sy_name_offset = 0;
3171 symbolP->sy_number = symbol_number;
3172 symbol_number += 1 + S_GET_NUMBER_AUXILIARY (symbolP);
3176 return symbol_number;
3180 glue_symbols (head, tail)
3184 unsigned int symbol_number = 0;
3186 while (*head != NULL)
3188 symbolS *tmp = *head;
3191 symbol_remove (tmp, head, tail);
3192 symbol_append (tmp, symbol_lastP, &symbol_rootP, &symbol_lastP);
3195 if (SF_GET_STRING (tmp))
3197 tmp->sy_name_offset = string_byte_count;
3198 string_byte_count += strlen (S_GET_NAME (tmp)) + 1;
3202 /* Fix "long" names. */
3203 tmp->sy_name_offset = 0;
3206 tmp->sy_number = symbol_number;
3207 symbol_number += 1 + S_GET_NUMBER_AUXILIARY (tmp);
3210 return symbol_number;
3216 unsigned int symbol_number = 0;
3219 for (symbolP = symbol_rootP; symbolP; symbolP = symbol_next (symbolP))
3221 symbolP->sy_number = symbol_number;
3223 if (SF_GET_TAGGED (symbolP))
3227 ((symbolS *) SA_GET_SYM_TAGNDX (symbolP))->sy_number);
3230 symbol_number += 1 + S_GET_NUMBER_AUXILIARY (symbolP);
3233 return symbol_number;
3238 crawl_symbols (h, abfd)
3240 bfd *abfd ATTRIBUTE_UNUSED;
3244 /* Initialize the stack used to keep track of the matching .bb .be. */
3246 block_stack = stack_init (512, sizeof (symbolS *));
3248 /* The symbol list should be ordered according to the following sequence
3251 . debug entries for functions
3252 . fake symbols for the sections, including .text .data and .bss
3255 But this is not mandatory. The only important point is to put the
3256 undefined symbols at the end of the list. */
3258 /* Is there a .file symbol ? If not insert one at the beginning. */
3259 if (symbol_rootP == NULL
3260 || S_GET_STORAGE_CLASS (symbol_rootP) != C_FILE)
3261 c_dot_file_symbol ("fake");
3263 /* Build up static symbols for the sections, they are filled in later. */
3265 for (i = SEG_E0; i < SEG_LAST; i++)
3266 if (segment_info[i].scnhdr.s_name[0])
3267 segment_info[i].dot = c_section_symbol ((char *) segment_info[i].name,
3270 /* Take all the externals out and put them into another chain. */
3271 H_SET_SYMBOL_TABLE_SIZE (h, yank_symbols ());
3272 /* Take the externals and glue them onto the end. */
3273 H_SET_SYMBOL_TABLE_SIZE (h,
3274 (H_GET_SYMBOL_COUNT (h)
3275 + glue_symbols (&symbol_globalP,
3276 &symbol_global_lastP)
3277 + glue_symbols (&symbol_externP,
3278 &symbol_extern_lastP)));
3280 H_SET_SYMBOL_TABLE_SIZE (h, tie_tags ());
3281 know (symbol_globalP == NULL);
3282 know (symbol_global_lastP == NULL);
3283 know (symbol_externP == NULL);
3284 know (symbol_extern_lastP == NULL);
3287 /* Find strings by crawling along symbol table chain. */
3294 struct filename_list *filename_list_scan = filename_list_head;
3296 /* Gotta do md_ byte-ordering stuff for string_byte_count first - KWK. */
3297 md_number_to_chars (where, (valueT) string_byte_count, 4);
3300 #ifdef COFF_LONG_SECTION_NAMES
3301 /* Support long section names as found in PE. This code must
3302 coordinate with that in coff_header_append and write_object_file. */
3306 for (i = SEG_E0; i < SEG_LAST; i++)
3308 if (segment_info[i].scnhdr.s_name[0]
3309 && strlen (segment_info[i].name) > SCNNMLEN)
3313 size = strlen (segment_info[i].name) + 1;
3314 memcpy (where, segment_info[i].name, size);
3319 #endif /* COFF_LONG_SECTION_NAMES */
3321 for (symbolP = symbol_rootP;
3323 symbolP = symbol_next (symbolP))
3327 if (SF_GET_STRING (symbolP))
3329 size = strlen (S_GET_NAME (symbolP)) + 1;
3330 memcpy (where, S_GET_NAME (symbolP), size);
3333 if (S_GET_STORAGE_CLASS (symbolP) == C_FILE
3334 && SA_GET_FILE_FNAME_ZEROS (symbolP) == 0
3335 && SA_GET_FILE_FNAME_OFFSET (symbolP) != 0)
3337 size = strlen (filename_list_scan->filename) + 1;
3338 memcpy (where, filename_list_scan->filename, size);
3339 filename_list_scan = filename_list_scan ->next;
3346 do_linenos_for (abfd, h, file_cursor)
3349 unsigned long *file_cursor;
3352 unsigned long start = *file_cursor;
3354 for (idx = SEG_E0; idx < SEG_LAST; idx++)
3356 segment_info_type *s = segment_info + idx;
3358 if (s->scnhdr.s_nlnno != 0)
3360 struct lineno_list *line_ptr;
3362 struct external_lineno *buffer =
3363 (struct external_lineno *) xmalloc (s->scnhdr.s_nlnno * LINESZ);
3365 struct external_lineno *dst = buffer;
3367 /* Run through the table we've built and turn it into its external
3368 form, take this chance to remove duplicates. */
3370 for (line_ptr = s->lineno_list_head;
3371 line_ptr != (struct lineno_list *) NULL;
3372 line_ptr = line_ptr->next)
3374 if (line_ptr->line.l_lnno == 0)
3376 /* Turn a pointer to a symbol into the symbols' index,
3377 provided that it has been initialised. */
3378 if (line_ptr->line.l_addr.l_symndx)
3379 line_ptr->line.l_addr.l_symndx =
3380 ((symbolS *) line_ptr->line.l_addr.l_symndx)->sy_number;
3383 line_ptr->line.l_addr.l_paddr += ((struct frag *) (line_ptr->frag))->fr_address;
3385 (void) bfd_coff_swap_lineno_out (abfd, &(line_ptr->line), dst);
3389 s->scnhdr.s_lnnoptr = *file_cursor;
3391 bfd_bwrite (buffer, (bfd_size_type) s->scnhdr.s_nlnno * LINESZ, abfd);
3394 *file_cursor += s->scnhdr.s_nlnno * LINESZ;
3398 H_SET_LINENO_SIZE (h, *file_cursor - start);
3401 /* Now we run through the list of frag chains in a segment and
3402 make all the subsegment frags appear at the end of the
3403 list, as if the seg 0 was extra long. */
3410 for (i = SEG_E0; i < SEG_UNKNOWN; i++)
3412 frchainS *head = segment_info[i].frchainP;
3414 fragS *prev_frag = &dummy;
3416 while (head && head->frch_seg == i)
3418 prev_frag->fr_next = head->frch_root;
3419 prev_frag = head->frch_last;
3420 head = head->frch_next;
3422 prev_frag->fr_next = 0;
3426 unsigned long machine;
3429 #ifndef SUB_SEGMENT_ALIGN
3431 /* The last subsegment gets an aligment corresponding to the alignment
3432 of the section. This allows proper nop-filling at the end of
3433 code-bearing sections. */
3434 #define SUB_SEGMENT_ALIGN(SEG, FRCHAIN) \
3435 (!(FRCHAIN)->frch_next || (FRCHAIN)->frch_next->frch_seg != (SEG) \
3436 ? get_recorded_alignment (SEG) : 0)
3438 #define SUB_SEGMENT_ALIGN(SEG, FRCHAIN) 1
3443 write_object_file ()
3447 struct frchain *frchain_ptr;
3449 object_headers headers;
3450 unsigned long file_cursor;
3453 abfd = bfd_openw (out_file_name, TARGET_FORMAT);
3457 as_perror (_("FATAL: Can't create %s"), out_file_name);
3458 exit (EXIT_FAILURE);
3460 bfd_set_format (abfd, bfd_object);
3461 bfd_set_arch_mach (abfd, BFD_ARCH, machine);
3463 string_byte_count = 4;
3465 /* Run through all the sub-segments and align them up. Also
3466 close any open frags. We tack a .fill onto the end of the
3467 frag chain so that any .align's size can be worked by looking
3468 at the next frag. */
3469 for (frchain_ptr = frchain_root;
3470 frchain_ptr != (struct frchain *) NULL;
3471 frchain_ptr = frchain_ptr->frch_next)
3475 subseg_set (frchain_ptr->frch_seg, frchain_ptr->frch_subseg);
3477 alignment = SUB_SEGMENT_ALIGN (now_seg, frchain_ptr);
3480 md_do_align (alignment, (char *) NULL, 0, 0, alignment_done);
3482 if (subseg_text_p (now_seg))
3483 frag_align_code (alignment, 0);
3485 frag_align (alignment, 0, 0);
3491 frag_wane (frag_now);
3492 frag_now->fr_fix = 0;
3493 know (frag_now->fr_next == NULL);
3498 for (i = SEG_E0; i < SEG_UNKNOWN; i++)
3499 relax_segment (segment_info[i].frchainP->frch_root, i);
3501 /* Relaxation has completed. Freeze all syms. */
3504 H_SET_NUMBER_OF_SECTIONS (&headers, 0);
3506 /* Find out how big the sections are, and set the addresses. */
3508 for (i = SEG_E0; i < SEG_UNKNOWN; i++)
3512 segment_info[i].scnhdr.s_paddr = addr;
3513 segment_info[i].scnhdr.s_vaddr = addr;
3515 if (segment_info[i].scnhdr.s_name[0])
3517 H_SET_NUMBER_OF_SECTIONS (&headers,
3518 H_GET_NUMBER_OF_SECTIONS (&headers) + 1);
3520 #ifdef COFF_LONG_SECTION_NAMES
3521 /* Support long section names as found in PE. This code
3522 must coordinate with that in coff_header_append and
3527 len = strlen (segment_info[i].name);
3529 string_byte_count += len + 1;
3531 #endif /* COFF_LONG_SECTION_NAMES */
3534 size = size_section (abfd, (unsigned int) i);
3537 /* I think the section alignment is only used on the i960; the
3538 i960 needs it, and it should do no harm on other targets. */
3539 #ifdef ALIGNMENT_IN_S_FLAGS
3540 segment_info[i].scnhdr.s_flags |= (section_alignment[i] & 0xF) << 8;
3542 segment_info[i].scnhdr.s_align = 1 << section_alignment[i];
3546 H_SET_TEXT_SIZE (&headers, size);
3547 else if (i == SEG_E1)
3548 H_SET_DATA_SIZE (&headers, size);
3549 else if (i == SEG_E2)
3550 H_SET_BSS_SIZE (&headers, size);
3553 /* Turn the gas native symbol table shape into a coff symbol table. */
3554 crawl_symbols (&headers, abfd);
3556 if (string_byte_count == 4)
3557 string_byte_count = 0;
3559 H_SET_STRING_SIZE (&headers, string_byte_count);
3565 for (i = SEG_E0; i < SEG_UNKNOWN; i++)
3567 fixup_mdeps (segment_info[i].frchainP->frch_root, &headers, i);
3568 fixup_segment (&segment_info[i], i);
3571 /* Look for ".stab" segments and fill in their initial symbols
3573 for (i = SEG_E0; i < SEG_UNKNOWN; i++)
3575 name = segment_info[i].name;
3578 && strncmp (".stab", name, 5) == 0
3579 && strncmp (".stabstr", name, 8) != 0)
3580 adjust_stab_section (abfd, i);
3583 file_cursor = H_GET_TEXT_FILE_OFFSET (&headers);
3585 bfd_seek (abfd, (file_ptr) file_cursor, 0);
3587 /* Plant the data. */
3588 fill_section (abfd, &headers, &file_cursor);
3590 do_relocs_for (abfd, &headers, &file_cursor);
3592 do_linenos_for (abfd, &headers, &file_cursor);
3594 H_SET_FILE_MAGIC_NUMBER (&headers, COFF_MAGIC);
3595 #ifndef OBJ_COFF_OMIT_TIMESTAMP
3596 H_SET_TIME_STAMP (&headers, (long)time((time_t *)0));
3598 H_SET_TIME_STAMP (&headers, 0);
3600 #ifdef TC_COFF_SET_MACHINE
3601 TC_COFF_SET_MACHINE (&headers);
3605 #define COFF_FLAGS 0
3608 #ifdef KEEP_RELOC_INFO
3609 H_SET_FLAGS (&headers, ((H_GET_LINENO_SIZE(&headers) ? 0 : F_LNNO) |
3610 COFF_FLAGS | coff_flags));
3612 H_SET_FLAGS (&headers, ((H_GET_LINENO_SIZE(&headers) ? 0 : F_LNNO) |
3613 (H_GET_RELOCATION_SIZE(&headers) ? 0 : F_RELFLG) |
3614 COFF_FLAGS | coff_flags));
3618 unsigned int symtable_size = H_GET_SYMBOL_TABLE_SIZE (&headers);
3619 char *buffer1 = xmalloc (symtable_size + string_byte_count + 1);
3621 H_SET_SYMBOL_TABLE_POINTER (&headers, bfd_tell (abfd));
3622 w_symbols (abfd, buffer1, symbol_rootP);
3623 if (string_byte_count > 0)
3624 w_strings (buffer1 + symtable_size);
3625 bfd_bwrite (buffer1, (bfd_size_type) symtable_size + string_byte_count,
3630 coff_header_append (abfd, &headers);
3632 /* Recent changes to write need this, but where it should
3633 go is up to Ken.. */
3634 if (!bfd_close_all_done (abfd))
3635 as_fatal (_("Can't close %s: %s"), out_file_name,
3636 bfd_errmsg (bfd_get_error ()));
3639 extern bfd *stdoutput;
3646 /* Add a new segment. This is called from subseg_new via the
3647 obj_new_segment macro. */
3650 obj_coff_add_segment (name)
3655 #ifndef COFF_LONG_SECTION_NAMES
3656 char buf[SCNNMLEN + 1];
3658 strncpy (buf, name, SCNNMLEN);
3659 buf[SCNNMLEN] = '\0';
3663 for (i = SEG_E0; i < SEG_LAST && segment_info[i].scnhdr.s_name[0]; i++)
3664 if (strcmp (name, segment_info[i].name) == 0)
3669 as_bad (_("Too many new sections; can't add \"%s\""), name);
3673 /* Add a new section. */
3674 strncpy (segment_info[i].scnhdr.s_name, name,
3675 sizeof (segment_info[i].scnhdr.s_name));
3676 segment_info[i].scnhdr.s_flags = STYP_REG;
3677 segment_info[i].name = xstrdup (name);
3682 /* Implement the .section pseudo op:
3683 .section name {, "flags"}
3685 | +--- optional flags: 'b' for bss
3687 +-- section name 'l' for lib
3691 'd' (apparently m88k for data)
3693 'r' for read-only data
3694 But if the argument is not a quoted string, treat it as a
3695 subsegment number. */
3698 obj_coff_section (ignore)
3699 int ignore ATTRIBUTE_UNUSED;
3701 /* Strip out the section name. */
3702 char *section_name, *name;
3715 else if (type == 'D')
3717 segment_info[now_seg].scnhdr.s_flags |= flags;
3722 section_name = input_line_pointer;
3723 c = get_symbol_end ();
3725 name = xmalloc (input_line_pointer - section_name + 1);
3726 strcpy (name, section_name);
3728 *input_line_pointer = c;
3734 if (*input_line_pointer == ',')
3736 ++input_line_pointer;
3739 if (*input_line_pointer != '"')
3740 exp = get_absolute_expression ();
3743 ++input_line_pointer;
3744 while (*input_line_pointer != '"'
3745 && ! is_end_of_line[(unsigned char) *input_line_pointer])
3747 switch (*input_line_pointer)
3749 case 'b': flags |= STYP_BSS; break;
3750 case 'i': flags |= STYP_INFO; break;
3751 case 'l': flags |= STYP_LIB; break;
3752 case 'n': flags |= STYP_NOLOAD; break;
3753 case 'o': flags |= STYP_OVER; break;
3755 case 'w': flags |= STYP_DATA; break;
3756 case 'x': flags |= STYP_TEXT; break;
3757 case 'r': flags |= STYP_LIT; break;
3759 as_warn(_("unknown section attribute '%c'"),
3760 *input_line_pointer);
3763 ++input_line_pointer;
3765 if (*input_line_pointer == '"')
3766 ++input_line_pointer;
3770 subseg_new (name, (subsegT) exp);
3772 segment_info[now_seg].scnhdr.s_flags |= flags;
3774 demand_empty_rest_of_line ();
3778 obj_coff_text (ignore)
3779 int ignore ATTRIBUTE_UNUSED;
3781 subseg_new (".text", get_absolute_expression ());
3785 obj_coff_data (ignore)
3786 int ignore ATTRIBUTE_UNUSED;
3788 if (flag_readonly_data_in_text)
3789 subseg_new (".text", get_absolute_expression () + 1000);
3791 subseg_new (".data", get_absolute_expression ());
3795 obj_coff_ident (ignore)
3796 int ignore ATTRIBUTE_UNUSED;
3798 segT current_seg = now_seg; /* Save current seg. */
3799 subsegT current_subseg = now_subseg;
3801 subseg_new (".comment", 0); /* .comment seg. */
3802 stringer (1); /* Read string. */
3803 subseg_set (current_seg, current_subseg); /* Restore current seg. */
3807 c_symbol_merge (debug, normal)
3811 S_SET_DATA_TYPE (normal, S_GET_DATA_TYPE (debug));
3812 S_SET_STORAGE_CLASS (normal, S_GET_STORAGE_CLASS (debug));
3814 if (S_GET_NUMBER_AUXILIARY (debug) > S_GET_NUMBER_AUXILIARY (normal))
3815 S_SET_NUMBER_AUXILIARY (normal, S_GET_NUMBER_AUXILIARY (debug));
3817 if (S_GET_NUMBER_AUXILIARY (debug) > 0)
3818 memcpy ((char *) &normal->sy_symbol.ost_auxent[0],
3819 (char *) &debug->sy_symbol.ost_auxent[0],
3820 (unsigned int) (S_GET_NUMBER_AUXILIARY (debug) * AUXESZ));
3822 /* Move the debug flags. */
3823 SF_SET_DEBUG_FIELD (normal, SF_GET_DEBUG_FIELD (debug));
3827 c_line_new (symbol, paddr, line_number, frag)
3833 struct lineno_list *new_line =
3834 (struct lineno_list *) xmalloc (sizeof (struct lineno_list));
3836 segment_info_type *s = segment_info + now_seg;
3837 new_line->line.l_lnno = line_number;
3839 if (line_number == 0)
3841 last_line_symbol = symbol;
3842 new_line->line.l_addr.l_symndx = (long) symbol;
3846 new_line->line.l_addr.l_paddr = paddr;
3849 new_line->frag = (char *) frag;
3850 new_line->next = (struct lineno_list *) NULL;
3852 if (s->lineno_list_head == (struct lineno_list *) NULL)
3853 s->lineno_list_head = new_line;
3855 s->lineno_list_tail->next = new_line;
3857 s->lineno_list_tail = new_line;
3858 return LINESZ * s->scnhdr.s_nlnno++;
3862 c_dot_file_symbol (filename)
3867 symbolP = symbol_new (".file",
3870 &zero_address_frag);
3872 S_SET_STORAGE_CLASS (symbolP, C_FILE);
3873 S_SET_NUMBER_AUXILIARY (symbolP, 1);
3875 if (strlen (filename) > FILNMLEN)
3877 /* Filename is too long to fit into an auxent,
3878 we stick it into the string table instead. We keep
3879 a linked list of the filenames we find so we can emit
3881 struct filename_list *f = ((struct filename_list *)
3882 xmalloc (sizeof (struct filename_list)));
3884 f->filename = filename;
3887 SA_SET_FILE_FNAME_ZEROS (symbolP, 0);
3888 SA_SET_FILE_FNAME_OFFSET (symbolP, 1);
3890 if (filename_list_tail)
3891 filename_list_tail->next = f;
3893 filename_list_head = f;
3894 filename_list_tail = f;
3898 SA_SET_FILE_FNAME (symbolP, filename);
3904 listing_source_file (filename);
3907 SF_SET_DEBUG (symbolP);
3908 S_SET_VALUE (symbolP, (valueT) previous_file_symbol);
3910 previous_file_symbol = symbolP;
3912 /* Make sure that the symbol is first on the symbol chain. */
3913 if (symbol_rootP != symbolP)
3915 symbol_remove (symbolP, &symbol_rootP, &symbol_lastP);
3916 symbol_insert (symbolP, symbol_rootP, &symbol_rootP, &symbol_lastP);
3920 /* Build a 'section static' symbol. */
3923 c_section_symbol (name, idx)
3929 symbolP = symbol_find_base (name, DO_NOT_STRIP);
3930 if (symbolP == NULL)
3931 symbolP = symbol_new (name, idx, 0, &zero_address_frag);
3934 /* Mmmm. I just love violating interfaces. Makes me feel...dirty. */
3935 S_SET_SEGMENT (symbolP, idx);
3936 symbolP->sy_frag = &zero_address_frag;
3939 S_SET_STORAGE_CLASS (symbolP, C_STAT);
3940 S_SET_NUMBER_AUXILIARY (symbolP, 1);
3942 SF_SET_STATICS (symbolP);
3945 /* manfred@s-direktnet.de: section symbols *must* have the LOCAL bit cleared,
3946 which is set by the new definition of LOCAL_LABEL in tc-m68k.h. */
3947 SF_CLEAR_LOCAL (symbolP);
3950 /* If the .linkonce pseudo-op was used for this section, we must
3951 store the information in the auxiliary entry for the section
3953 if (segment_info[idx].linkonce != LINKONCE_UNSET)
3957 switch (segment_info[idx].linkonce)
3961 case LINKONCE_DISCARD:
3962 type = IMAGE_COMDAT_SELECT_ANY;
3964 case LINKONCE_ONE_ONLY:
3965 type = IMAGE_COMDAT_SELECT_NODUPLICATES;
3967 case LINKONCE_SAME_SIZE:
3968 type = IMAGE_COMDAT_SELECT_SAME_SIZE;
3970 case LINKONCE_SAME_CONTENTS:
3971 type = IMAGE_COMDAT_SELECT_EXACT_MATCH;
3975 SYM_AUXENT (symbolP)->x_scn.x_comdat = type;
3983 w_symbols (abfd, where, symbol_rootP)
3986 symbolS * symbol_rootP;
3991 /* First fill in those values we have only just worked out. */
3992 for (i = SEG_E0; i < SEG_LAST; i++)
3994 symbolP = segment_info[i].dot;
3997 SA_SET_SCN_SCNLEN (symbolP, segment_info[i].scnhdr.s_size);
3998 SA_SET_SCN_NRELOC (symbolP, segment_info[i].scnhdr.s_nreloc);
3999 SA_SET_SCN_NLINNO (symbolP, segment_info[i].scnhdr.s_nlnno);
4003 /* Emit all symbols left in the symbol chain. */
4004 for (symbolP = symbol_rootP; symbolP; symbolP = symbol_next (symbolP))
4006 /* Used to save the offset of the name. It is used to point
4007 to the string in memory but must be a file offset. */
4010 /* We can't fix the lnnoptr field in yank_symbols with the other
4011 adjustments, because we have to wait until we know where they
4013 if (SF_GET_ADJ_LNNOPTR (symbolP))
4014 SA_GET_SYM_LNNOPTR (symbolP) +=
4015 segment_info[S_GET_SEGMENT (symbolP)].scnhdr.s_lnnoptr;
4017 tc_coff_symbol_emit_hook (symbolP);
4019 temp = S_GET_NAME (symbolP);
4020 if (SF_GET_STRING (symbolP))
4022 S_SET_OFFSET (symbolP, symbolP->sy_name_offset);
4023 S_SET_ZEROES (symbolP, 0);
4027 memset (symbolP->sy_symbol.ost_entry.n_name, 0, SYMNMLEN);
4028 strncpy (symbolP->sy_symbol.ost_entry.n_name, temp, SYMNMLEN);
4030 where = symbol_to_chars (abfd, where, symbolP);
4031 S_SET_NAME (symbolP, temp);
4036 obj_coff_lcomm (ignore)
4037 int ignore ATTRIBUTE_UNUSED;
4049 name = input_line_pointer;
4051 c = get_symbol_end ();
4052 p = input_line_pointer;
4055 if (*input_line_pointer != ',')
4057 as_bad (_("Expected comma after name"));
4058 ignore_rest_of_line ();
4061 if (*input_line_pointer == '\n')
4063 as_bad (_("Missing size expression"));
4066 input_line_pointer++;
4067 if ((temp = get_absolute_expression ()) < 0)
4069 as_warn (_("lcomm length (%d.) <0! Ignored."), temp);
4070 ignore_rest_of_line ();
4075 symbolP = symbol_find_or_make (name);
4077 if (S_GET_SEGMENT (symbolP) == SEG_UNKNOWN &&
4078 S_GET_VALUE (symbolP) == 0)
4083 segT current_seg = now_seg; /* Save current seg. */
4084 subsegT current_subseg = now_subseg;
4086 subseg_set (SEG_E2, 1);
4087 symbolP->sy_frag = frag_now;
4088 p = frag_var(rs_org, 1, 1, (relax_substateT)0, symbolP,
4089 (offsetT) temp, (char *) 0);
4091 subseg_set (current_seg, current_subseg); /* Restore current seg. */
4092 S_SET_SEGMENT (symbolP, SEG_E2);
4093 S_SET_STORAGE_CLASS (symbolP, C_STAT);
4097 as_bad (_("Symbol %s already defined"), name);
4099 demand_empty_rest_of_line ();
4104 fixup_mdeps (frags, h, this_segment)
4106 object_headers *h ATTRIBUTE_UNUSED;
4109 subseg_change (this_segment, 0);
4113 switch (frags->fr_type)
4120 HANDLE_ALIGN (frags);
4122 frags->fr_type = rs_fill;
4124 ((frags->fr_next->fr_address - frags->fr_address - frags->fr_fix)
4127 case rs_machine_dependent:
4128 md_convert_frag (h, this_segment, frags);
4134 frags = frags->fr_next;
4140 #ifndef TC_FORCE_RELOCATION
4141 #define TC_FORCE_RELOCATION(fix) 0
4145 fixup_segment (segP, this_segment_type)
4146 segment_info_type * segP;
4147 segT this_segment_type;
4150 symbolS *add_symbolP;
4151 symbolS *sub_symbolP;
4158 segT add_symbol_segment = absolute_section;
4160 for (fixP = segP->fix_root; fixP; fixP = fixP->fx_next)
4162 fragP = fixP->fx_frag;
4164 where = fixP->fx_where;
4165 place = fragP->fr_literal + where;
4166 size = fixP->fx_size;
4167 add_symbolP = fixP->fx_addsy;
4168 sub_symbolP = fixP->fx_subsy;
4169 add_number = fixP->fx_offset;
4170 pcrel = fixP->fx_pcrel;
4172 /* We want function-relative stabs to work on systems which
4173 may use a relaxing linker; thus we must handle the sym1-sym2
4174 fixups function-relative stabs generates.
4176 Of course, if you actually enable relaxing in the linker, the
4177 line and block scoping information is going to be incorrect
4178 in some cases. The only way to really fix this is to support
4179 a reloc involving the difference of two symbols. */
4181 && (!sub_symbolP || pcrel))
4185 if (fixP->fx_tcbit && SF_GET_CALLNAME (add_symbolP))
4187 /* Relocation should be done via the associated 'bal' entry
4190 if (!SF_GET_BALNAME (tc_get_bal_of_call (add_symbolP)))
4192 as_bad_where (fixP->fx_file, fixP->fx_line,
4193 _("No 'bal' entry point for leafproc %s"),
4194 S_GET_NAME (add_symbolP));
4197 fixP->fx_addsy = add_symbolP = tc_get_bal_of_call (add_symbolP);
4201 /* Make sure the symbols have been resolved; this may not have
4202 happened if these are expression symbols. */
4203 if (add_symbolP != NULL && ! add_symbolP->sy_resolved)
4204 resolve_symbol_value (add_symbolP);
4206 if (add_symbolP != NULL)
4208 /* If this fixup is against a symbol which has been equated
4209 to another symbol, convert it to the other symbol. */
4210 if (add_symbolP->sy_value.X_op == O_symbol
4211 && (! S_IS_DEFINED (add_symbolP)
4212 || S_IS_COMMON (add_symbolP)))
4214 while (add_symbolP->sy_value.X_op == O_symbol
4215 && (! S_IS_DEFINED (add_symbolP)
4216 || S_IS_COMMON (add_symbolP)))
4220 /* We must avoid looping, as that can occur with a
4221 badly written program. */
4222 n = add_symbolP->sy_value.X_add_symbol;
4223 if (n == add_symbolP)
4225 add_number += add_symbolP->sy_value.X_add_number;
4228 fixP->fx_addsy = add_symbolP;
4229 fixP->fx_offset = add_number;
4233 if (sub_symbolP != NULL && ! sub_symbolP->sy_resolved)
4234 resolve_symbol_value (sub_symbolP);
4236 if (add_symbolP != NULL
4237 && add_symbolP->sy_mri_common)
4239 know (add_symbolP->sy_value.X_op == O_symbol);
4240 add_number += S_GET_VALUE (add_symbolP);
4241 fixP->fx_offset = add_number;
4242 add_symbolP = fixP->fx_addsy = add_symbolP->sy_value.X_add_symbol;
4246 add_symbol_segment = S_GET_SEGMENT (add_symbolP);
4250 if (add_symbolP == NULL || add_symbol_segment == absolute_section)
4252 if (add_symbolP != NULL)
4254 add_number += S_GET_VALUE (add_symbolP);
4256 fixP->fx_addsy = NULL;
4259 /* It's just -sym. */
4260 if (S_GET_SEGMENT (sub_symbolP) == absolute_section)
4262 add_number -= S_GET_VALUE (sub_symbolP);
4269 as_bad_where (fixP->fx_file, fixP->fx_line,
4270 _("Negative of non-absolute symbol %s"),
4271 S_GET_NAME (sub_symbolP));
4273 add_number -= S_GET_VALUE (sub_symbolP);
4274 } /* not absolute */
4276 /* if sub_symbol is in the same segment that add_symbol
4277 and add_symbol is either in DATA, TEXT, BSS or ABSOLUTE. */
4279 else if (S_GET_SEGMENT (sub_symbolP) == add_symbol_segment
4280 && SEG_NORMAL (add_symbol_segment))
4282 /* Difference of 2 symbols from same segment. Can't
4283 make difference of 2 undefineds: 'value' means
4284 something different for N_UNDF. */
4286 /* Makes no sense to use the difference of 2 arbitrary symbols
4287 as the target of a call instruction. */
4289 as_bad_where (fixP->fx_file, fixP->fx_line,
4290 _("callj to difference of 2 symbols"));
4291 #endif /* TC_I960 */
4292 add_number += S_GET_VALUE (add_symbolP) -
4293 S_GET_VALUE (sub_symbolP);
4296 if (!TC_FORCE_RELOCATION (fixP))
4298 fixP->fx_addsy = NULL;
4299 fixP->fx_subsy = NULL;
4301 #ifdef TC_M68K /* is this right? */
4309 /* Different segments in subtraction. */
4310 know (!(S_IS_EXTERNAL (sub_symbolP) && (S_GET_SEGMENT (sub_symbolP) == absolute_section)));
4312 if ((S_GET_SEGMENT (sub_symbolP) == absolute_section))
4313 add_number -= S_GET_VALUE (sub_symbolP);
4316 else if (S_GET_SEGMENT (sub_symbolP) == this_segment_type
4317 #if 0 /* Okay for 68k, at least... */
4322 /* Make it pc-relative. */
4323 add_number += (md_pcrel_from (fixP)
4324 - S_GET_VALUE (sub_symbolP));
4333 as_bad_where (fixP->fx_file, fixP->fx_line,
4334 _("Can't emit reloc {- %s-seg symbol \"%s\"} @ file address %ld."),
4335 segment_name (S_GET_SEGMENT (sub_symbolP)),
4336 S_GET_NAME (sub_symbolP),
4337 (long) (fragP->fr_address + where));
4344 if (add_symbol_segment == this_segment_type && pcrel)
4346 /* This fixup was made when the symbol's segment was
4347 SEG_UNKNOWN, but it is now in the local segment.
4348 So we know how to do the address without relocation. */
4350 /* reloc_callj() may replace a 'call' with a 'calls' or a 'bal',
4351 in which cases it modifies *fixP as appropriate. In the case
4352 of a 'calls', no further work is required, and *fixP has been
4353 set up to make the rest of the code below a no-op. */
4355 #endif /* TC_I960 */
4357 add_number += S_GET_VALUE (add_symbolP);
4358 add_number -= md_pcrel_from (fixP);
4361 add_number -= segP->scnhdr.s_vaddr;
4362 if defined (TC_I386) || defined (TE_LYNX). I now
4363 think that was an error propagated from the case when
4364 we are going to emit the relocation. If we are not
4365 going to emit the relocation, then we just want to
4366 set add_number to the difference between the symbols.
4367 This is a case that would only arise when there is a
4368 PC relative reference from a section other than .text
4369 to a symbol defined in the same section, and the
4370 reference is not relaxed. Since jump instructions on
4371 the i386 are relaxed, this could only arise with a
4372 call instruction. */
4374 pcrel = 0; /* Lie. Don't want further pcrel processing. */
4375 if (!TC_FORCE_RELOCATION (fixP))
4377 fixP->fx_addsy = NULL;
4383 switch (add_symbol_segment)
4385 case absolute_section:
4387 /* See comment about reloc_callj() above. */
4389 #endif /* TC_I960 */
4390 add_number += S_GET_VALUE (add_symbolP);
4393 if (!TC_FORCE_RELOCATION (fixP))
4395 fixP->fx_addsy = NULL;
4401 #if defined(TC_A29K) || (defined(TE_PE) && defined(TC_I386)) || defined(TC_M88K) || defined(TC_OR32)
4402 /* This really should be handled in the linker, but
4403 backward compatibility forbids. */
4404 add_number += S_GET_VALUE (add_symbolP);
4406 add_number += S_GET_VALUE (add_symbolP) +
4407 segment_info[S_GET_SEGMENT (add_symbolP)].scnhdr.s_paddr;
4413 if ((int) fixP->fx_bit_fixP == 13)
4415 /* This is a COBR instruction. They have only a
4416 13-bit displacement and are only to be used
4417 for local branches: flag as error, don't generate
4419 as_bad_where (fixP->fx_file, fixP->fx_line,
4420 _("can't use COBR format with external label"));
4421 fixP->fx_addsy = NULL;
4425 #endif /* TC_I960 */
4426 #if ((defined (TC_I386) || defined (TE_LYNX) || defined (TE_AUX)) && !defined(TE_PE)) || defined (COFF_COMMON_ADDEND)
4427 /* 386 COFF uses a peculiar format in which the
4428 value of a common symbol is stored in the .text
4429 segment (I've checked this on SVR3.2 and SCO
4430 3.2.2) Ian Taylor <ian@cygnus.com>. */
4431 /* This is also true for 68k COFF on sysv machines
4432 (Checked on Motorola sysv68 R3V6 and R3V7.1, and also on
4433 UNIX System V/M68000, Release 1.0 from ATT/Bell Labs)
4434 Philippe De Muyter <phdm@info.ucl.ac.be>. */
4435 if (S_IS_COMMON (add_symbolP))
4436 add_number += S_GET_VALUE (add_symbolP);
4446 #if !defined(TC_M88K) && !(defined(TE_PE) && defined(TC_I386)) && !defined(TC_A29K) && !defined(TC_OR32)
4447 /* This adjustment is not correct on the m88k, for which the
4448 linker does all the computation. */
4449 add_number -= md_pcrel_from (fixP);
4451 if (add_symbolP == 0)
4452 fixP->fx_addsy = &abs_symbol;
4453 #if defined (TC_I386) || defined (TE_LYNX) || defined (TC_I960) || defined (TC_M68K)
4454 /* On the 386 we must adjust by the segment vaddr as well.
4457 I changed the i960 to work this way as well. This is
4458 compatible with the current GNU linker behaviour. I do
4459 not know what other i960 COFF assemblers do. This is not
4460 a common case: normally, only assembler code will contain
4461 a PC relative reloc, and only branches which do not
4462 originate in the .text section will have a non-zero
4465 I changed the m68k to work this way as well. This will
4466 break existing PC relative relocs from sections which do
4467 not start at address 0, but it will make ld -r work.
4468 Ian Taylor, 4 Oct 96. */
4470 add_number -= segP->scnhdr.s_vaddr;
4474 md_apply_fix3 (fixP, (valueT *) & add_number, this_segment_type);
4476 if (!fixP->fx_bit_fixP && ! fixP->fx_no_overflow)
4479 /* The m88k uses the offset field of the reloc to get around
4482 && ((add_number & ~0xFF)
4483 || (fixP->fx_signed && (add_number & 0x80)))
4484 && ((add_number & ~0xFF) != (-1 & ~0xFF)
4485 || (add_number & 0x80) == 0))
4487 && ((add_number & ~0xFFFF)
4488 || (fixP->fx_signed && (add_number & 0x8000)))
4489 && ((add_number & ~0xFFFF) != (-1 & ~0xFFFF)
4490 || (add_number & 0x8000) == 0)))
4492 as_bad_where (fixP->fx_file, fixP->fx_line,
4493 _("Value of %ld too large for field of %d bytes at 0x%lx"),
4494 (long) add_number, size,
4495 (unsigned long) (fragP->fr_address + where));
4498 #ifdef WARN_SIGNED_OVERFLOW_WORD
4499 /* Warn if a .word value is too large when treated as a
4500 signed number. We already know it is not too negative.
4501 This is to catch over-large switches generated by gcc on
4503 if (!flag_signed_overflow_ok
4505 && add_number > 0x7fff)
4506 as_bad_where (fixP->fx_file, fixP->fx_line,
4507 _("Signed .word overflow; switch may be too large; %ld at 0x%lx"),
4509 (unsigned long) (fragP->fr_address + where));
4517 /* The first entry in a .stab section is special. */
4520 obj_coff_init_stab_section (seg)
4526 unsigned int stroff;
4528 /* Make space for this first symbol. */
4532 as_where (&file, (unsigned int *) NULL);
4533 stabstr_name = (char *) alloca (strlen (segment_info[seg].name) + 4);
4534 strcpy (stabstr_name, segment_info[seg].name);
4535 strcat (stabstr_name, "str");
4536 stroff = get_stab_string_offset (file, stabstr_name);
4538 md_number_to_chars (p, stroff, 4);
4541 /* Fill in the counts in the first entry in a .stab section. */
4544 adjust_stab_section(abfd, seg)
4548 segT stabstrseg = SEG_UNKNOWN;
4549 const char *secname, *name2;
4552 int i, strsz = 0, nsyms;
4553 fragS *frag = segment_info[seg].frchainP->frch_root;
4555 /* Look for the associated string table section. */
4557 secname = segment_info[seg].name;
4558 name = (char *) alloca (strlen (secname) + 4);
4559 strcpy (name, secname);
4560 strcat (name, "str");
4562 for (i = SEG_E0; i < SEG_UNKNOWN; i++)
4564 name2 = segment_info[i].name;
4565 if (name2 != NULL && strncmp(name2, name, 8) == 0)
4572 /* If we found the section, get its size. */
4573 if (stabstrseg != SEG_UNKNOWN)
4574 strsz = size_section (abfd, stabstrseg);
4576 nsyms = size_section (abfd, seg) / 12 - 1;
4578 /* Look for the first frag of sufficient size for the initial stab
4579 symbol, and collect a pointer to it. */
4580 while (frag && frag->fr_fix < 12)
4581 frag = frag->fr_next;
4583 p = frag->fr_literal;
4586 /* Write in the number of stab symbols and the size of the string
4588 bfd_h_put_16 (abfd, (bfd_vma) nsyms, (bfd_byte *) p + 6);
4589 bfd_h_put_32 (abfd, (bfd_vma) strsz, (bfd_byte *) p + 8);
4592 #endif /* not BFD_ASSEMBLER */
4594 const pseudo_typeS coff_pseudo_table[] =
4596 {"def", obj_coff_def, 0},
4597 {"dim", obj_coff_dim, 0},
4598 {"endef", obj_coff_endef, 0},
4599 {"line", obj_coff_line, 0},
4600 {"ln", obj_coff_ln, 0},
4601 #ifdef BFD_ASSEMBLER
4602 {"loc", obj_coff_loc, 0},
4604 {"appline", obj_coff_ln, 1},
4605 {"scl", obj_coff_scl, 0},
4606 {"size", obj_coff_size, 0},
4607 {"tag", obj_coff_tag, 0},
4608 {"type", obj_coff_type, 0},
4609 {"val", obj_coff_val, 0},
4610 {"section", obj_coff_section, 0},
4611 {"sect", obj_coff_section, 0},
4612 /* FIXME: We ignore the MRI short attribute. */
4613 {"section.s", obj_coff_section, 0},
4614 {"sect.s", obj_coff_section, 0},
4615 /* We accept the .bss directive for backward compatibility with
4616 earlier versions of gas. */
4617 {"bss", obj_coff_bss, 0},
4618 {"weak", obj_coff_weak, 0},
4619 {"ident", obj_coff_ident, 0},
4620 #ifndef BFD_ASSEMBLER
4621 {"use", obj_coff_section, 0},
4622 {"text", obj_coff_text, 0},
4623 {"data", obj_coff_data, 0},
4624 {"lcomm", obj_coff_lcomm, 0},
4626 {"optim", s_ignore, 0}, /* For sun386i cc (?) */
4628 {"version", s_ignore, 0},
4629 {"ABORT", s_abort, 0},
4630 #if defined( TC_M88K ) || defined ( TC_TIC4X )
4631 /* The m88k and tic4x uses sdef instead of def. */
4632 {"sdef", obj_coff_def, 0},
4634 {NULL, NULL, 0} /* end sentinel */
4635 }; /* coff_pseudo_table */
4637 #ifdef BFD_ASSEMBLER
4639 /* Support for a COFF emulation. */
4641 static void coff_pop_insert PARAMS ((void));
4642 static int coff_separate_stab_sections PARAMS ((void));
4647 pop_insert (coff_pseudo_table);
4651 coff_separate_stab_sections ()
4656 const struct format_ops coff_format_ops =
4658 bfd_target_coff_flavour,
4659 0, /* dfl_leading_underscore */
4660 1, /* emit_section_symbols */
4665 0, /* frob_file_before_adjust */
4666 0, /* frob_file_before_fix */
4667 coff_frob_file_after_relocs,
4670 0, /* s_get_align */
4671 0, /* s_set_align */
4672 0, /* s_get_other */
4673 0, /* s_set_other */
4678 0, /* copy_symbol_attributes */
4679 0, /* generate_asm_lineno */
4680 0, /* process_stab */
4681 coff_separate_stab_sections,
4682 obj_coff_init_stab_section,
4683 0, /* sec_sym_ok_for_reloc */
4685 0, /* ecoff_set_ext */
4686 coff_obj_read_begin_hook,
4687 coff_obj_symbol_new_hook