Update all uses of md_apply_fix to use md_apply_fix3. Make it a void function.
[deliverable/binutils-gdb.git] / gas / config / obj-coff.c
1 /* coff object file format
2 Copyright 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998,
3 1999, 2000, 2001
4 Free Software Foundation, Inc.
5
6 This file is part of GAS.
7
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)
11 any later version.
12
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.
17
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
21 02111-1307, USA. */
22
23 #define OBJ_HEADER "obj-coff.h"
24
25 #include "as.h"
26 #include "obstack.h"
27 #include "subsegs.h"
28
29 /* I think this is probably always correct. */
30 #ifndef KEEP_RELOC_INFO
31 #define KEEP_RELOC_INFO
32 #endif
33
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)
39 #endif
40
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;
44
45 typedef struct
46 {
47 unsigned long chunk_size;
48 unsigned long element_size;
49 unsigned long size;
50 char *data;
51 unsigned long pointer;
52 }
53 stack;
54
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));
76 #ifdef BFD_ASSEMBLER
77 static void obj_coff_loc PARAMS((int));
78 #endif
79 \f
80 /* stack stuff */
81
82 static stack *
83 stack_init (chunk_size, element_size)
84 unsigned long chunk_size;
85 unsigned long element_size;
86 {
87 stack *st;
88
89 st = (stack *) malloc (sizeof (stack));
90 if (!st)
91 return 0;
92 st->data = malloc (chunk_size);
93 if (!st->data)
94 {
95 free (st);
96 return 0;
97 }
98 st->pointer = 0;
99 st->size = chunk_size;
100 st->chunk_size = chunk_size;
101 st->element_size = element_size;
102 return st;
103 }
104
105 #if 0
106 /* Not currently used. */
107 static void
108 stack_delete (st)
109 stack *st;
110 {
111 free (st->data);
112 free (st);
113 }
114 #endif
115
116 static char *
117 stack_push (st, element)
118 stack *st;
119 char *element;
120 {
121 if (st->pointer + st->element_size >= st->size)
122 {
123 st->size += st->chunk_size;
124 if ((st->data = xrealloc (st->data, st->size)) == (char *) 0)
125 return (char *) 0;
126 }
127 memcpy (st->data + st->pointer, element, st->element_size);
128 st->pointer += st->element_size;
129 return st->data + st->pointer;
130 }
131
132 static char *
133 stack_pop (st)
134 stack *st;
135 {
136 if (st->pointer < st->element_size)
137 {
138 st->pointer = 0;
139 return (char *) 0;
140 }
141 st->pointer -= st->element_size;
142 return st->data + st->pointer;
143 }
144 \f
145 /*
146 * Maintain a list of the tagnames of the structres.
147 */
148
149 static struct hash_control *tag_hash;
150
151 static void
152 tag_init ()
153 {
154 tag_hash = hash_new ();
155 }
156
157 static void
158 tag_insert (name, symbolP)
159 const char *name;
160 symbolS *symbolP;
161 {
162 const char *error_string;
163
164 if ((error_string = hash_jam (tag_hash, name, (char *) symbolP)))
165 {
166 as_fatal (_("Inserting \"%s\" into structure table failed: %s"),
167 name, error_string);
168 }
169 }
170
171 static symbolS *
172 tag_find (name)
173 char *name;
174 {
175 #ifdef STRIP_UNDERSCORE
176 if (*name == '_')
177 name++;
178 #endif /* STRIP_UNDERSCORE */
179 return (symbolS *) hash_find (tag_hash, name);
180 }
181
182 static symbolS *
183 tag_find_or_make (name)
184 char *name;
185 {
186 symbolS *symbolP;
187
188 if ((symbolP = tag_find (name)) == NULL)
189 {
190 symbolP = symbol_new (name, undefined_section,
191 0, &zero_address_frag);
192
193 tag_insert (S_GET_NAME (symbolP), symbolP);
194 #ifdef BFD_ASSEMBLER
195 symbol_table_insert (symbolP);
196 #endif
197 } /* not found */
198
199 return symbolP;
200 }
201
202 /* We accept the .bss directive to set the section for backward
203 compatibility with earlier versions of gas. */
204
205 static void
206 obj_coff_bss (ignore)
207 int ignore ATTRIBUTE_UNUSED;
208 {
209 if (*input_line_pointer == '\n')
210 subseg_new (".bss", get_absolute_expression ());
211 else
212 s_lcomm (0);
213 }
214
215 /* Handle .weak. This is a GNU extension. */
216
217 static void
218 obj_coff_weak (ignore)
219 int ignore ATTRIBUTE_UNUSED;
220 {
221 char *name;
222 int c;
223 symbolS *symbolP;
224
225 do
226 {
227 name = input_line_pointer;
228 c = get_symbol_end ();
229 symbolP = symbol_find_or_make (name);
230 *input_line_pointer = c;
231 SKIP_WHITESPACE ();
232
233 #if defined BFD_ASSEMBLER || defined S_SET_WEAK
234 S_SET_WEAK (symbolP);
235 #endif
236
237 #ifdef TE_PE
238 S_SET_STORAGE_CLASS (symbolP, C_NT_WEAK);
239 #else
240 S_SET_STORAGE_CLASS (symbolP, C_WEAKEXT);
241 #endif
242
243 if (c == ',')
244 {
245 input_line_pointer++;
246 SKIP_WHITESPACE ();
247 if (*input_line_pointer == '\n')
248 c = '\n';
249 }
250 }
251 while (c == ',');
252
253 demand_empty_rest_of_line ();
254 }
255
256 #ifdef BFD_ASSEMBLER
257
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));
263
264 #define GET_FILENAME_STRING(X) \
265 ((char*) (&((X)->sy_symbol.ost_auxent->x_file.x_n.x_offset))[1])
266
267 /* @@ Ick. */
268 static segT
269 fetch_coff_debug_section ()
270 {
271 static segT debug_section;
272 if (!debug_section)
273 {
274 CONST asymbol *s;
275 s = bfd_make_debug_symbol (stdoutput, (char *) 0, 0);
276 assert (s != 0);
277 debug_section = s->section;
278 }
279 return debug_section;
280 }
281
282 void
283 SA_SET_SYM_ENDNDX (sym, val)
284 symbolS *sym;
285 symbolS *val;
286 {
287 combined_entry_type *entry, *p;
288
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;
292 entry->fix_end = 1;
293 }
294
295 static void
296 SA_SET_SYM_TAGNDX (sym, val)
297 symbolS *sym;
298 symbolS *val;
299 {
300 combined_entry_type *entry, *p;
301
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;
305 entry->fix_tag = 1;
306 }
307
308 static int
309 S_GET_DATA_TYPE (sym)
310 symbolS *sym;
311 {
312 return coffsymbol (symbol_get_bfdsym (sym))->native->u.syment.n_type;
313 }
314
315 int
316 S_SET_DATA_TYPE (sym, val)
317 symbolS *sym;
318 int val;
319 {
320 coffsymbol (symbol_get_bfdsym (sym))->native->u.syment.n_type = val;
321 return val;
322 }
323
324 int
325 S_GET_STORAGE_CLASS (sym)
326 symbolS *sym;
327 {
328 return coffsymbol (symbol_get_bfdsym (sym))->native->u.syment.n_sclass;
329 }
330
331 int
332 S_SET_STORAGE_CLASS (sym, val)
333 symbolS *sym;
334 int val;
335 {
336 coffsymbol (symbol_get_bfdsym (sym))->native->u.syment.n_sclass = val;
337 return val;
338 }
339
340 /* Merge a debug symbol containing debug information into a normal symbol. */
341
342 void
343 c_symbol_merge (debug, normal)
344 symbolS *debug;
345 symbolS *normal;
346 {
347 S_SET_DATA_TYPE (normal, S_GET_DATA_TYPE (debug));
348 S_SET_STORAGE_CLASS (normal, S_GET_STORAGE_CLASS (debug));
349
350 if (S_GET_NUMBER_AUXILIARY (debug) > S_GET_NUMBER_AUXILIARY (normal))
351 {
352 /* take the most we have */
353 S_SET_NUMBER_AUXILIARY (normal, S_GET_NUMBER_AUXILIARY (debug));
354 }
355
356 if (S_GET_NUMBER_AUXILIARY (debug) > 0)
357 {
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))));
362 }
363
364 /* Move the debug flags. */
365 SF_SET_DEBUG_FIELD (normal, SF_GET_DEBUG_FIELD (debug));
366 }
367
368 void
369 c_dot_file_symbol (filename)
370 const char *filename;
371 {
372 symbolS *symbolP;
373
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);
377
378 S_SET_STORAGE_CLASS (symbolP, C_FILE);
379 S_SET_NUMBER_AUXILIARY (symbolP, 1);
380
381 symbol_get_bfdsym (symbolP)->flags = BSF_DEBUGGING;
382
383 #ifndef NO_LISTING
384 {
385 extern int listing;
386 if (listing)
387 {
388 listing_source_file (filename);
389 }
390 }
391 #endif
392
393 /* Make sure that the symbol is first on the symbol chain */
394 if (symbol_rootP != symbolP)
395 {
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 */
399 }
400
401 /* Line number handling */
402
403 struct line_no {
404 struct line_no *next;
405 fragS *frag;
406 alent l;
407 };
408
409 int coff_line_base;
410
411 /* Symbol of last function, which we should hang line#s off of. */
412 static symbolS *line_fsym;
413
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))
417
418 \f
419 void
420 coff_obj_symbol_new_hook (symbolP)
421 symbolS *symbolP;
422 {
423 long sz = (OBJ_COFF_MAX_AUXENTRIES + 1) * sizeof (combined_entry_type);
424 char * s = (char *) xmalloc (sz);
425
426 memset (s, 0, sz);
427 coffsymbol (symbol_get_bfdsym (symbolP))->native = (combined_entry_type *) s;
428
429 S_SET_DATA_TYPE (symbolP, T_NULL);
430 S_SET_STORAGE_CLASS (symbolP, 0);
431 S_SET_NUMBER_AUXILIARY (symbolP, 0);
432
433 if (S_IS_STRING (symbolP))
434 SF_SET_STRING (symbolP);
435
436 if (S_IS_LOCAL (symbolP))
437 SF_SET_LOCAL (symbolP);
438 }
439
440 \f
441 /*
442 * Handle .ln directives.
443 */
444
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... */
448 int coff_n_line_nos;
449
450 static void
451 add_lineno (frag, offset, num)
452 fragS *frag;
453 addressT offset;
454 int num;
455 {
456 struct line_no *new_line =
457 (struct line_no *) xmalloc (sizeof (struct line_no));
458 if (!current_lineno_sym)
459 {
460 abort ();
461 }
462
463 #ifndef OBJ_XCOFF
464 /* The native aix assembler accepts negative line number */
465
466 if (num <= 0)
467 {
468 /* Zero is used as an end marker in the file. */
469 as_warn (_("Line numbers must be positive integers\n"));
470 num = 1;
471 }
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;
477 line_nos = new_line;
478 coff_n_line_nos++;
479 }
480
481 void
482 coff_add_linesym (sym)
483 symbolS *sym;
484 {
485 if (line_nos)
486 {
487 coffsymbol (symbol_get_bfdsym (current_lineno_sym))->lineno =
488 (alent *) line_nos;
489 coff_n_line_nos++;
490 line_nos = 0;
491 }
492 current_lineno_sym = sym;
493 }
494
495 static void
496 obj_coff_ln (appline)
497 int appline;
498 {
499 int l;
500
501 if (! appline && def_symbol_in_progress != NULL)
502 {
503 as_warn (_(".ln pseudo-op inside .def/.endef: ignored."));
504 demand_empty_rest_of_line ();
505 return;
506 }
507
508 l = get_absolute_expression ();
509
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);
514 else
515 add_lineno (frag_now, frag_now_fix (), l);
516
517 #ifndef NO_LISTING
518 {
519 extern int listing;
520
521 if (listing)
522 {
523 if (! appline)
524 l += coff_line_base - 1;
525 listing_source_line (l);
526 }
527 }
528 #endif
529
530 demand_empty_rest_of_line ();
531 }
532
533 /* .loc is essentially the same as .ln; parse it for assembler
534 compatibility. */
535
536 static void
537 obj_coff_loc (ignore)
538 int ignore ATTRIBUTE_UNUSED;
539 {
540 int lineno;
541
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)
545 {
546 as_warn (_(".loc outside of .text"));
547 demand_empty_rest_of_line ();
548 return;
549 }
550
551 if (def_symbol_in_progress != NULL)
552 {
553 as_warn (_(".loc pseudo-op inside .def/.endef: ignored."));
554 demand_empty_rest_of_line ();
555 return;
556 }
557
558 /* Skip the file number. */
559 SKIP_WHITESPACE ();
560 get_absolute_expression ();
561 SKIP_WHITESPACE ();
562
563 lineno = get_absolute_expression ();
564
565 #ifndef NO_LISTING
566 {
567 extern int listing;
568
569 if (listing)
570 {
571 lineno += coff_line_base - 1;
572 listing_source_line (lineno);
573 }
574 }
575 #endif
576
577 demand_empty_rest_of_line ();
578
579 add_lineno (frag_now, frag_now_fix (), lineno);
580 }
581
582 /* Handle the .ident pseudo-op. */
583
584 static void
585 obj_coff_ident (ignore)
586 int ignore ATTRIBUTE_UNUSED;
587 {
588 segT current_seg = now_seg;
589 subsegT current_subseg = now_subseg;
590
591 #ifdef TE_PE
592 {
593 segT sec;
594
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)));
602 }
603 #else
604 subseg_new (".comment", 0);
605 #endif
606
607 stringer (1);
608 subseg_set (current_seg, current_subseg);
609 }
610
611 /*
612 * def()
613 *
614 * Handle .def directives.
615 *
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 :-).
622 *
623 */
624
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++;
629
630 static void
631 obj_coff_def (what)
632 int what ATTRIBUTE_UNUSED;
633 {
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;
638
639 if (def_symbol_in_progress != NULL)
640 {
641 as_warn (_(".def pseudo-op used inside of .def/.endef: ignored."));
642 demand_empty_rest_of_line ();
643 return;
644 } /* if not inside .def/.endef */
645
646 SKIP_WHITESPACES ();
647
648 symbol_name = input_line_pointer;
649 #ifdef STRIP_UNDERSCORE
650 if (symbol_name[0] == '_' && symbol_name[1] != 0)
651 symbol_name++;
652 #endif /* STRIP_UNDERSCORE */
653
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);
660 #endif
661
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);
666
667 if (S_IS_STRING (def_symbol_in_progress))
668 SF_SET_STRING (def_symbol_in_progress);
669
670 *input_line_pointer = name_end;
671
672 demand_empty_rest_of_line ();
673 }
674
675 unsigned int dim_index;
676
677 static void
678 obj_coff_endef (ignore)
679 int ignore ATTRIBUTE_UNUSED;
680 {
681 symbolS *symbolP = NULL;
682
683 /* DIM BUG FIX sac@cygnus.com */
684 dim_index = 0;
685 if (def_symbol_in_progress == NULL)
686 {
687 as_warn (_(".endef pseudo-op used outside of .def/.endef: ignored."));
688 demand_empty_rest_of_line ();
689 return;
690 } /* if not inside .def/.endef */
691
692 /* Set the section number according to storage class. */
693 switch (S_GET_STORAGE_CLASS (def_symbol_in_progress))
694 {
695 case C_STRTAG:
696 case C_ENTAG:
697 case C_UNTAG:
698 SF_SET_TAG (def_symbol_in_progress);
699 /* intentional fallthrough */
700 case C_FILE:
701 case C_TPDEF:
702 SF_SET_DEBUG (def_symbol_in_progress);
703 S_SET_SEGMENT (def_symbol_in_progress, fetch_coff_debug_section ());
704 break;
705
706 case C_EFCN:
707 SF_SET_LOCAL (def_symbol_in_progress); /* Do not emit this symbol. */
708 /* intentional fallthrough */
709 case C_BLOCK:
710 SF_SET_PROCESS (def_symbol_in_progress); /* Will need processing before writing */
711 /* intentional fallthrough */
712 case C_FCN:
713 {
714 CONST char *name;
715 S_SET_SEGMENT (def_symbol_in_progress, text_section);
716
717 name = S_GET_NAME (def_symbol_in_progress);
718 if (name[0] == '.' && name[2] == 'f' && name[3] == '\0')
719 {
720 switch (name[1])
721 {
722 case 'b':
723 /* .bf */
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);
728 clear_function ();
729 break;
730 #ifdef TE_PE
731 case 'e':
732 /* .ef */
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)
738 + coff_line_base));
739 break;
740 #endif
741 }
742 }
743 }
744 break;
745
746 #ifdef C_AUTOARG
747 case C_AUTOARG:
748 #endif /* C_AUTOARG */
749 case C_AUTO:
750 case C_REG:
751 case C_ARG:
752 case C_REGPARM:
753 case C_FIELD:
754
755 /* According to the COFF documentation:
756
757 http://osr5doc.sco.com:1996/topics/COFF_SectNumFld.html
758
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.
765
766 But from Ian Lance Taylor:
767
768 http://sources.redhat.com/ml/binutils/2000-08/msg00202.html
769
770 the actual tools all marked them as section -1. So the GNU COFF
771 assembler follows historical COFF assemblers.
772
773 However, it causes problems for djgpp
774
775 http://sources.redhat.com/ml/binutils/2000-08/msg00210.html
776
777 By defining STRICTCOFF, a COFF port can make the assembler to
778 follow the documented behavior. */
779 #ifdef STRICTCOFF
780 case C_MOS:
781 case C_MOE:
782 case C_MOU:
783 case C_EOS:
784 #endif
785 SF_SET_DEBUG (def_symbol_in_progress);
786 S_SET_SEGMENT (def_symbol_in_progress, absolute_section);
787 break;
788
789 #ifndef STRICTCOFF
790 case C_MOS:
791 case C_MOE:
792 case C_MOU:
793 case C_EOS:
794 S_SET_SEGMENT (def_symbol_in_progress, absolute_section);
795 break;
796 #endif
797
798 case C_EXT:
799 case C_WEAKEXT:
800 #ifdef TE_PE
801 case C_NT_WEAK:
802 #endif
803 case C_STAT:
804 case C_LABEL:
805 /* Valid but set somewhere else (s_comm, s_lcomm, colon) */
806 break;
807
808 default:
809 case C_USTATIC:
810 case C_EXTDEF:
811 case C_ULABEL:
812 as_warn (_("unexpected storage class %d"),
813 S_GET_STORAGE_CLASS (def_symbol_in_progress));
814 break;
815 } /* switch on storage class */
816
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. */
823
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. */
831
832 /* FIXME-SOON If for some reason the definition label/symbol is
833 never seen, this will probably leave an undefined symbol at link
834 time. */
835
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)),
840 "*DEBUG*")
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))
847 {
848 /* If it already is at the end of the symbol list, do nothing */
849 if (def_symbol_in_progress != symbol_lastP)
850 {
851 symbol_remove (def_symbol_in_progress, &symbol_rootP, &symbol_lastP);
852 symbol_append (def_symbol_in_progress, symbol_lastP, &symbol_rootP,
853 &symbol_lastP);
854 }
855 }
856 else
857 {
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
862 symbols. [loic] */
863
864 /* The debug entry (def_symbol_in_progress) is merged into the
865 previous definition. */
866
867 c_symbol_merge (def_symbol_in_progress, symbolP);
868 symbol_remove (def_symbol_in_progress, &symbol_rootP, &symbol_lastP);
869
870 def_symbol_in_progress = symbolP;
871
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)
875 {
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)
881 {
882 symbol_remove (def_symbol_in_progress, &symbol_rootP, &symbol_lastP);
883 symbol_append (def_symbol_in_progress, symbol_lastP, &symbol_rootP, &symbol_lastP);
884 }
885 }
886 }
887
888 if (SF_GET_TAG (def_symbol_in_progress))
889 {
890 symbolS *oldtag;
891
892 oldtag = symbol_find_base (S_GET_NAME (def_symbol_in_progress),
893 DO_NOT_STRIP);
894 if (oldtag == NULL || ! SF_GET_TAG (oldtag))
895 tag_insert (S_GET_NAME (def_symbol_in_progress),
896 def_symbol_in_progress);
897 }
898
899 if (SF_GET_FUNCTION (def_symbol_in_progress))
900 {
901 know (sizeof (def_symbol_in_progress) <= sizeof (long));
902 set_function (def_symbol_in_progress);
903 SF_SET_PROCESS (def_symbol_in_progress);
904
905 if (symbolP == NULL)
906 {
907 /* That is, if this is the first time we've seen the
908 function... */
909 symbol_table_insert (def_symbol_in_progress);
910 } /* definition follows debug */
911 } /* Create the line number entry pointing to the function being defined */
912
913 def_symbol_in_progress = NULL;
914 demand_empty_rest_of_line ();
915 }
916
917 static void
918 obj_coff_dim (ignore)
919 int ignore ATTRIBUTE_UNUSED;
920 {
921 int dim_index;
922
923 if (def_symbol_in_progress == NULL)
924 {
925 as_warn (_(".dim pseudo-op used outside of .def/.endef: ignored."));
926 demand_empty_rest_of_line ();
927 return;
928 } /* if not inside .def/.endef */
929
930 S_SET_NUMBER_AUXILIARY (def_symbol_in_progress, 1);
931
932 for (dim_index = 0; dim_index < DIMNUM; dim_index++)
933 {
934 SKIP_WHITESPACES ();
935 SA_SET_SYM_DIMEN (def_symbol_in_progress, dim_index,
936 get_absolute_expression ());
937
938 switch (*input_line_pointer)
939 {
940 case ',':
941 input_line_pointer++;
942 break;
943
944 default:
945 as_warn (_("badly formed .dim directive ignored"));
946 /* intentional fallthrough */
947 case '\n':
948 case ';':
949 dim_index = DIMNUM;
950 break;
951 }
952 }
953
954 demand_empty_rest_of_line ();
955 }
956
957 static void
958 obj_coff_line (ignore)
959 int ignore ATTRIBUTE_UNUSED;
960 {
961 int this_base;
962
963 if (def_symbol_in_progress == NULL)
964 {
965 /* Probably stabs-style line? */
966 obj_coff_ln (0);
967 return;
968 }
969
970 this_base = get_absolute_expression ();
971 if (!strcmp (".bf", S_GET_NAME (def_symbol_in_progress)))
972 coff_line_base = this_base;
973
974 S_SET_NUMBER_AUXILIARY (def_symbol_in_progress, 1);
975 SA_SET_SYM_LNNO (def_symbol_in_progress, this_base);
976
977 demand_empty_rest_of_line ();
978
979 #ifndef NO_LISTING
980 if (strcmp (".bf", S_GET_NAME (def_symbol_in_progress)) == 0)
981 {
982 extern int listing;
983
984 if (listing)
985 listing_source_line ((unsigned int) this_base);
986 }
987 #endif
988 }
989
990 static void
991 obj_coff_size (ignore)
992 int ignore ATTRIBUTE_UNUSED;
993 {
994 if (def_symbol_in_progress == NULL)
995 {
996 as_warn (_(".size pseudo-op used outside of .def/.endef ignored."));
997 demand_empty_rest_of_line ();
998 return;
999 } /* if not inside .def/.endef */
1000
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 ();
1004 }
1005
1006 static void
1007 obj_coff_scl (ignore)
1008 int ignore ATTRIBUTE_UNUSED;
1009 {
1010 if (def_symbol_in_progress == NULL)
1011 {
1012 as_warn (_(".scl pseudo-op used outside of .def/.endef ignored."));
1013 demand_empty_rest_of_line ();
1014 return;
1015 } /* if not inside .def/.endef */
1016
1017 S_SET_STORAGE_CLASS (def_symbol_in_progress, get_absolute_expression ());
1018 demand_empty_rest_of_line ();
1019 }
1020
1021 static void
1022 obj_coff_tag (ignore)
1023 int ignore ATTRIBUTE_UNUSED;
1024 {
1025 char *symbol_name;
1026 char name_end;
1027
1028 if (def_symbol_in_progress == NULL)
1029 {
1030 as_warn (_(".tag pseudo-op used outside of .def/.endef ignored."));
1031 demand_empty_rest_of_line ();
1032 return;
1033 }
1034
1035 S_SET_NUMBER_AUXILIARY (def_symbol_in_progress, 1);
1036 symbol_name = input_line_pointer;
1037 name_end = get_symbol_end ();
1038
1039 #ifdef tc_canonicalize_symbol_name
1040 symbol_name = tc_canonicalize_symbol_name (symbol_name);
1041 #endif
1042
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)
1048 {
1049 as_warn (_("tag not found for .tag %s"), symbol_name);
1050 } /* not defined */
1051
1052 SF_SET_TAGGED (def_symbol_in_progress);
1053 *input_line_pointer = name_end;
1054
1055 demand_empty_rest_of_line ();
1056 }
1057
1058 static void
1059 obj_coff_type (ignore)
1060 int ignore ATTRIBUTE_UNUSED;
1061 {
1062 if (def_symbol_in_progress == NULL)
1063 {
1064 as_warn (_(".type pseudo-op used outside of .def/.endef ignored."));
1065 demand_empty_rest_of_line ();
1066 return;
1067 } /* if not inside .def/.endef */
1068
1069 S_SET_DATA_TYPE (def_symbol_in_progress, get_absolute_expression ());
1070
1071 if (ISFCN (S_GET_DATA_TYPE (def_symbol_in_progress)) &&
1072 S_GET_STORAGE_CLASS (def_symbol_in_progress) != C_TPDEF)
1073 {
1074 SF_SET_FUNCTION (def_symbol_in_progress);
1075 } /* is a function */
1076
1077 demand_empty_rest_of_line ();
1078 }
1079
1080 static void
1081 obj_coff_val (ignore)
1082 int ignore ATTRIBUTE_UNUSED;
1083 {
1084 if (def_symbol_in_progress == NULL)
1085 {
1086 as_warn (_(".val pseudo-op used outside of .def/.endef ignored."));
1087 demand_empty_rest_of_line ();
1088 return;
1089 } /* if not inside .def/.endef */
1090
1091 if (is_name_beginner (*input_line_pointer))
1092 {
1093 char *symbol_name = input_line_pointer;
1094 char name_end = get_symbol_end ();
1095
1096 #ifdef tc_canonicalize_symbol_name
1097 symbol_name = tc_canonicalize_symbol_name (symbol_name);
1098 #endif
1099 if (!strcmp (symbol_name, "."))
1100 {
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) */
1104 }
1105 else if (strcmp (S_GET_NAME (def_symbol_in_progress), symbol_name))
1106 {
1107 expressionS exp;
1108
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);
1114
1115 /* If the segment is undefined when the forward reference is
1116 resolved, then copy the segment id from the forward
1117 symbol. */
1118 SF_SET_GET_SEGMENT (def_symbol_in_progress);
1119
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
1124 just below. */
1125 }
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;
1129 }
1130 else
1131 {
1132 S_SET_VALUE (def_symbol_in_progress, get_absolute_expression ());
1133 } /* if symbol based */
1134
1135 demand_empty_rest_of_line ();
1136 }
1137
1138 void
1139 coff_obj_read_begin_hook ()
1140 {
1141 /* These had better be the same. Usually 18 bytes. */
1142 #ifndef BFD_HEADERS
1143 know (sizeof (SYMENT) == sizeof (AUXENT));
1144 know (SYMESZ == AUXESZ);
1145 #endif
1146 tag_init ();
1147 }
1148
1149 symbolS *coff_last_function;
1150 static symbolS *coff_last_bf;
1151
1152 void
1153 coff_frob_symbol (symp, punt)
1154 symbolS *symp;
1155 int *punt;
1156 {
1157 static symbolS *last_tagP;
1158 static stack *block_stack;
1159 static symbolS *set_end;
1160 symbolS *next_set_end = NULL;
1161
1162 if (symp == &abs_symbol)
1163 {
1164 *punt = 1;
1165 return;
1166 }
1167
1168 if (current_lineno_sym)
1169 coff_add_linesym ((symbolS *) 0);
1170
1171 if (!block_stack)
1172 block_stack = stack_init (512, sizeof (symbolS*));
1173
1174 if (S_IS_WEAK (symp))
1175 {
1176 #ifdef TE_PE
1177 S_SET_STORAGE_CLASS (symp, C_NT_WEAK);
1178 #else
1179 S_SET_STORAGE_CLASS (symp, C_WEAKEXT);
1180 #endif
1181 }
1182
1183 if (!S_IS_DEFINED (symp)
1184 && !S_IS_WEAK (symp)
1185 && S_GET_STORAGE_CLASS (symp) != C_STAT)
1186 S_SET_STORAGE_CLASS (symp, C_EXT);
1187
1188 if (!SF_GET_DEBUG (symp))
1189 {
1190 symbolS * real;
1191
1192 if (!SF_GET_LOCAL (symp)
1193 && !SF_GET_STATICS (symp)
1194 && S_GET_STORAGE_CLASS (symp) != C_LABEL
1195 && symbol_constant_p(symp)
1196 && (real = symbol_find_base (S_GET_NAME (symp), DO_NOT_STRIP))
1197 && S_GET_STORAGE_CLASS (real) == C_NULL
1198 && real != symp)
1199 {
1200 c_symbol_merge (symp, real);
1201 *punt = 1;
1202 return;
1203 }
1204
1205 if (!S_IS_DEFINED (symp) && !SF_GET_LOCAL (symp))
1206 {
1207 assert (S_GET_VALUE (symp) == 0);
1208 S_SET_EXTERNAL (symp);
1209 }
1210 else if (S_GET_STORAGE_CLASS (symp) == C_NULL)
1211 {
1212 if (S_GET_SEGMENT (symp) == text_section
1213 && symp != seg_info (text_section)->sym)
1214 S_SET_STORAGE_CLASS (symp, C_LABEL);
1215 else
1216 S_SET_STORAGE_CLASS (symp, C_STAT);
1217 }
1218
1219 if (SF_GET_PROCESS (symp))
1220 {
1221 if (S_GET_STORAGE_CLASS (symp) == C_BLOCK)
1222 {
1223 if (!strcmp (S_GET_NAME (symp), ".bb"))
1224 stack_push (block_stack, (char *) &symp);
1225 else
1226 {
1227 symbolS *begin;
1228
1229 begin = *(symbolS **) stack_pop (block_stack);
1230 if (begin == 0)
1231 as_warn (_("mismatched .eb"));
1232 else
1233 next_set_end = begin;
1234 }
1235 }
1236
1237 if (coff_last_function == 0 && SF_GET_FUNCTION (symp))
1238 {
1239 union internal_auxent *auxp;
1240
1241 coff_last_function = symp;
1242 if (S_GET_NUMBER_AUXILIARY (symp) < 1)
1243 S_SET_NUMBER_AUXILIARY (symp, 1);
1244 auxp = SYM_AUXENT (symp);
1245 memset (auxp->x_sym.x_fcnary.x_ary.x_dimen, 0,
1246 sizeof (auxp->x_sym.x_fcnary.x_ary.x_dimen));
1247 }
1248
1249 if (S_GET_STORAGE_CLASS (symp) == C_EFCN)
1250 {
1251 if (coff_last_function == 0)
1252 as_fatal (_("C_EFCN symbol out of scope"));
1253 SA_SET_SYM_FSIZE (coff_last_function,
1254 (long) (S_GET_VALUE (symp)
1255 - S_GET_VALUE (coff_last_function)));
1256 next_set_end = coff_last_function;
1257 coff_last_function = 0;
1258 }
1259 }
1260
1261 if (S_IS_EXTERNAL (symp))
1262 S_SET_STORAGE_CLASS (symp, C_EXT);
1263 else if (SF_GET_LOCAL (symp))
1264 *punt = 1;
1265
1266 if (SF_GET_FUNCTION (symp))
1267 symbol_get_bfdsym (symp)->flags |= BSF_FUNCTION;
1268
1269 /* more ... */
1270 }
1271
1272 /* Double check weak symbols. */
1273 if (S_IS_WEAK (symp) && S_IS_COMMON (symp))
1274 as_bad (_("Symbol `%s' can not be both weak and common"),
1275 S_GET_NAME (symp));
1276
1277 if (SF_GET_TAG (symp))
1278 last_tagP = symp;
1279 else if (S_GET_STORAGE_CLASS (symp) == C_EOS)
1280 next_set_end = last_tagP;
1281
1282 #ifdef OBJ_XCOFF
1283 /* This is pretty horrible, but we have to set *punt correctly in
1284 order to call SA_SET_SYM_ENDNDX correctly. */
1285 if (! symbol_used_in_reloc_p (symp)
1286 && ((symbol_get_bfdsym (symp)->flags & BSF_SECTION_SYM) != 0
1287 || (! S_IS_EXTERNAL (symp)
1288 && ! symbol_get_tc (symp)->output
1289 && S_GET_STORAGE_CLASS (symp) != C_FILE)))
1290 *punt = 1;
1291 #endif
1292
1293 if (set_end != (symbolS *) NULL
1294 && ! *punt
1295 && ((symbol_get_bfdsym (symp)->flags & BSF_NOT_AT_END) != 0
1296 || (S_IS_DEFINED (symp)
1297 && ! S_IS_COMMON (symp)
1298 && (! S_IS_EXTERNAL (symp) || SF_GET_FUNCTION (symp)))))
1299 {
1300 SA_SET_SYM_ENDNDX (set_end, symp);
1301 set_end = NULL;
1302 }
1303
1304 if (next_set_end != NULL)
1305 {
1306 if (set_end != NULL)
1307 as_warn ("Warning: internal error: forgetting to set endndx of %s",
1308 S_GET_NAME (set_end));
1309 set_end = next_set_end;
1310 }
1311
1312 #ifndef OBJ_XCOFF
1313 if (! *punt
1314 && S_GET_STORAGE_CLASS (symp) == C_FCN
1315 && strcmp (S_GET_NAME (symp), ".bf") == 0)
1316 {
1317 if (coff_last_bf != NULL)
1318 SA_SET_SYM_ENDNDX (coff_last_bf, symp);
1319 coff_last_bf = symp;
1320 }
1321 #endif
1322 if (coffsymbol (symbol_get_bfdsym (symp))->lineno)
1323 {
1324 int i;
1325 struct line_no *lptr;
1326 alent *l;
1327
1328 lptr = (struct line_no *) coffsymbol (symbol_get_bfdsym (symp))->lineno;
1329 for (i = 0; lptr; lptr = lptr->next)
1330 i++;
1331 lptr = (struct line_no *) coffsymbol (symbol_get_bfdsym (symp))->lineno;
1332
1333 /* We need i entries for line numbers, plus 1 for the first
1334 entry which BFD will override, plus 1 for the last zero
1335 entry (a marker for BFD). */
1336 l = (alent *) xmalloc ((i + 2) * sizeof (alent));
1337 coffsymbol (symbol_get_bfdsym (symp))->lineno = l;
1338 l[i + 1].line_number = 0;
1339 l[i + 1].u.sym = NULL;
1340 for (; i > 0; i--)
1341 {
1342 if (lptr->frag)
1343 lptr->l.u.offset += lptr->frag->fr_address / OCTETS_PER_BYTE;
1344 l[i] = lptr->l;
1345 lptr = lptr->next;
1346 }
1347 }
1348 }
1349
1350 void
1351 coff_adjust_section_syms (abfd, sec, x)
1352 bfd *abfd ATTRIBUTE_UNUSED;
1353 asection *sec;
1354 PTR x ATTRIBUTE_UNUSED;
1355 {
1356 symbolS *secsym;
1357 segment_info_type *seginfo = seg_info (sec);
1358 int nlnno, nrelocs = 0;
1359
1360 /* RS/6000 gas creates a .debug section manually in ppc_frob_file in
1361 tc-ppc.c. Do not get confused by it. */
1362 if (seginfo == NULL)
1363 return;
1364
1365 if (!strcmp (sec->name, ".text"))
1366 nlnno = coff_n_line_nos;
1367 else
1368 nlnno = 0;
1369 {
1370 /* @@ Hope that none of the fixups expand to more than one reloc
1371 entry... */
1372 fixS *fixp = seginfo->fix_root;
1373 while (fixp)
1374 {
1375 if (! fixp->fx_done)
1376 nrelocs++;
1377 fixp = fixp->fx_next;
1378 }
1379 }
1380 if (bfd_get_section_size_before_reloc (sec) == 0
1381 && nrelocs == 0
1382 && nlnno == 0
1383 && sec != text_section
1384 && sec != data_section
1385 && sec != bss_section)
1386 return;
1387 secsym = section_symbol (sec);
1388 /* This is an estimate; we'll plug in the real value using
1389 SET_SECTION_RELOCS later */
1390 SA_SET_SCN_NRELOC (secsym, nrelocs);
1391 SA_SET_SCN_NLINNO (secsym, nlnno);
1392 }
1393
1394 void
1395 coff_frob_file_after_relocs ()
1396 {
1397 bfd_map_over_sections (stdoutput, coff_adjust_section_syms, (char*) 0);
1398 }
1399
1400 /*
1401 * implement the .section pseudo op:
1402 * .section name {, "flags"}
1403 * ^ ^
1404 * | +--- optional flags: 'b' for bss
1405 * | 'i' for info
1406 * +-- section name 'l' for lib
1407 * 'n' for noload
1408 * 'o' for over
1409 * 'w' for data
1410 * 'd' (apparently m88k for data)
1411 * 'x' for text
1412 * 'r' for read-only data
1413 * 's' for shared data (PE)
1414 * But if the argument is not a quoted string, treat it as a
1415 * subsegment number.
1416 */
1417
1418 void
1419 obj_coff_section (ignore)
1420 int ignore ATTRIBUTE_UNUSED;
1421 {
1422 /* Strip out the section name */
1423 char *section_name;
1424 char c;
1425 char *name;
1426 unsigned int exp;
1427 flagword flags, oldflags;
1428 asection *sec;
1429
1430 if (flag_mri)
1431 {
1432 char type;
1433
1434 s_mri_sect (&type);
1435 return;
1436 }
1437
1438 section_name = input_line_pointer;
1439 c = get_symbol_end ();
1440
1441 name = xmalloc (input_line_pointer - section_name + 1);
1442 strcpy (name, section_name);
1443
1444 *input_line_pointer = c;
1445
1446 SKIP_WHITESPACE ();
1447
1448 exp = 0;
1449 flags = SEC_NO_FLAGS;
1450
1451 if (*input_line_pointer == ',')
1452 {
1453 ++input_line_pointer;
1454 SKIP_WHITESPACE ();
1455 if (*input_line_pointer != '"')
1456 exp = get_absolute_expression ();
1457 else
1458 {
1459 ++input_line_pointer;
1460 while (*input_line_pointer != '"'
1461 && ! is_end_of_line[(unsigned char) *input_line_pointer])
1462 {
1463 switch (*input_line_pointer)
1464 {
1465 case 'b': flags |= SEC_ALLOC; flags &=~ SEC_LOAD; break;
1466 case 'n': flags &=~ SEC_LOAD; flags |= SEC_NEVER_LOAD; break;
1467 case 'd': flags |= SEC_DATA | SEC_LOAD; /* fall through */
1468 case 'w': flags &=~ SEC_READONLY; break;
1469 case 'x': flags |= SEC_CODE | SEC_LOAD; break;
1470 case 'r': flags |= SEC_READONLY; break;
1471 case 's': flags |= SEC_SHARED; break;
1472
1473 case 'i': /* STYP_INFO */
1474 case 'l': /* STYP_LIB */
1475 case 'o': /* STYP_OVER */
1476 as_warn (_("unsupported section attribute '%c'"),
1477 *input_line_pointer);
1478 break;
1479
1480 default:
1481 as_warn(_("unknown section attribute '%c'"),
1482 *input_line_pointer);
1483 break;
1484 }
1485 ++input_line_pointer;
1486 }
1487 if (*input_line_pointer == '"')
1488 ++input_line_pointer;
1489 }
1490 }
1491
1492 sec = subseg_new (name, (subsegT) exp);
1493
1494 oldflags = bfd_get_section_flags (stdoutput, sec);
1495 if (oldflags == SEC_NO_FLAGS)
1496 {
1497 /* Set section flags for a new section just created by subseg_new.
1498 Provide a default if no flags were parsed. */
1499 if (flags == SEC_NO_FLAGS)
1500 flags = TC_COFF_SECTION_DEFAULT_ATTRIBUTES;
1501
1502 #ifdef COFF_LONG_SECTION_NAMES
1503 /* Add SEC_LINK_ONCE and SEC_LINK_DUPLICATES_DISCARD to .gnu.linkonce
1504 sections so adjust_reloc_syms in write.c will correctly handle
1505 relocs which refer to non-local symbols in these sections. */
1506 if (strncmp (name, ".gnu.linkonce", sizeof (".gnu.linkonce") - 1) == 0)
1507 flags |= SEC_LINK_ONCE | SEC_LINK_DUPLICATES_DISCARD;
1508 #endif
1509
1510 if (! bfd_set_section_flags (stdoutput, sec, flags))
1511 as_warn (_("error setting flags for \"%s\": %s"),
1512 bfd_section_name (stdoutput, sec),
1513 bfd_errmsg (bfd_get_error ()));
1514 }
1515 else if (flags != SEC_NO_FLAGS)
1516 {
1517 /* This section's attributes have already been set. Warn if the
1518 attributes don't match. */
1519 flagword matchflags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_CODE
1520 | SEC_DATA | SEC_SHARED | SEC_NEVER_LOAD);
1521 if ((flags ^ oldflags) & matchflags)
1522 as_warn (_("Ignoring changed section attributes for %s"), name);
1523 }
1524
1525 demand_empty_rest_of_line ();
1526 }
1527
1528 void
1529 coff_adjust_symtab ()
1530 {
1531 if (symbol_rootP == NULL
1532 || S_GET_STORAGE_CLASS (symbol_rootP) != C_FILE)
1533 c_dot_file_symbol ("fake");
1534 }
1535
1536 void
1537 coff_frob_section (sec)
1538 segT sec;
1539 {
1540 segT strsec;
1541 char *p;
1542 fragS *fragp;
1543 bfd_vma size, n_entries, mask;
1544 bfd_vma align_power = (bfd_vma)sec->alignment_power + OCTETS_PER_BYTE_POWER;
1545
1546 /* The COFF back end in BFD requires that all section sizes be
1547 rounded up to multiples of the corresponding section alignments,
1548 supposedly because standard COFF has no other way of encoding alignment
1549 for sections. If your COFF flavor has a different way of encoding
1550 section alignment, then skip this step, as TICOFF does. */
1551 size = bfd_get_section_size_before_reloc (sec);
1552 mask = ((bfd_vma) 1 << align_power) - 1;
1553 #if !defined(TICOFF)
1554 if (size & mask)
1555 {
1556 bfd_vma new_size;
1557 fragS *last;
1558
1559 new_size = (size + mask) & ~mask;
1560 bfd_set_section_size (stdoutput, sec, new_size);
1561
1562 /* If the size had to be rounded up, add some padding in
1563 the last non-empty frag. */
1564 fragp = seg_info (sec)->frchainP->frch_root;
1565 last = seg_info (sec)->frchainP->frch_last;
1566 while (fragp->fr_next != last)
1567 fragp = fragp->fr_next;
1568 last->fr_address = size;
1569 fragp->fr_offset += new_size - size;
1570 }
1571 #endif
1572
1573 /* If the section size is non-zero, the section symbol needs an aux
1574 entry associated with it, indicating the size. We don't know
1575 all the values yet; coff_frob_symbol will fill them in later. */
1576 #ifndef TICOFF
1577 if (size != 0
1578 || sec == text_section
1579 || sec == data_section
1580 || sec == bss_section)
1581 #endif
1582 {
1583 symbolS *secsym = section_symbol (sec);
1584
1585 S_SET_STORAGE_CLASS (secsym, C_STAT);
1586 S_SET_NUMBER_AUXILIARY (secsym, 1);
1587 SF_SET_STATICS (secsym);
1588 SA_SET_SCN_SCNLEN (secsym, size);
1589 }
1590
1591 /* @@ these should be in a "stabs.h" file, or maybe as.h */
1592 #ifndef STAB_SECTION_NAME
1593 #define STAB_SECTION_NAME ".stab"
1594 #endif
1595 #ifndef STAB_STRING_SECTION_NAME
1596 #define STAB_STRING_SECTION_NAME ".stabstr"
1597 #endif
1598 if (strcmp (STAB_STRING_SECTION_NAME, sec->name))
1599 return;
1600
1601 strsec = sec;
1602 sec = subseg_get (STAB_SECTION_NAME, 0);
1603 /* size is already rounded up, since other section will be listed first */
1604 size = bfd_get_section_size_before_reloc (strsec);
1605
1606 n_entries = bfd_get_section_size_before_reloc (sec) / 12 - 1;
1607
1608 /* Find first non-empty frag. It should be large enough. */
1609 fragp = seg_info (sec)->frchainP->frch_root;
1610 while (fragp && fragp->fr_fix == 0)
1611 fragp = fragp->fr_next;
1612 assert (fragp != 0 && fragp->fr_fix >= 12);
1613
1614 /* Store the values. */
1615 p = fragp->fr_literal;
1616 bfd_h_put_16 (stdoutput, n_entries, (bfd_byte *) p + 6);
1617 bfd_h_put_32 (stdoutput, size, (bfd_byte *) p + 8);
1618 }
1619
1620 void
1621 obj_coff_init_stab_section (seg)
1622 segT seg;
1623 {
1624 char *file;
1625 char *p;
1626 char *stabstr_name;
1627 unsigned int stroff;
1628
1629 /* Make space for this first symbol. */
1630 p = frag_more (12);
1631 /* Zero it out. */
1632 memset (p, 0, 12);
1633 as_where (&file, (unsigned int *) NULL);
1634 stabstr_name = (char *) alloca (strlen (seg->name) + 4);
1635 strcpy (stabstr_name, seg->name);
1636 strcat (stabstr_name, "str");
1637 stroff = get_stab_string_offset (file, stabstr_name);
1638 know (stroff == 1);
1639 md_number_to_chars (p, stroff, 4);
1640 }
1641
1642 #ifdef DEBUG
1643 /* for debugging */
1644 const char *
1645 s_get_name (s)
1646 symbolS *s;
1647 {
1648 return ((s == NULL) ? "(NULL)" : S_GET_NAME (s));
1649 }
1650
1651 void
1652 symbol_dump ()
1653 {
1654 symbolS *symbolP;
1655
1656 for (symbolP = symbol_rootP; symbolP; symbolP = symbol_next (symbolP))
1657 {
1658 printf (_("0x%lx: \"%s\" type = %ld, class = %d, segment = %d\n"),
1659 (unsigned long) symbolP,
1660 S_GET_NAME(symbolP),
1661 (long) S_GET_DATA_TYPE(symbolP),
1662 S_GET_STORAGE_CLASS(symbolP),
1663 (int) S_GET_SEGMENT(symbolP));
1664 }
1665 }
1666
1667 #endif /* DEBUG */
1668
1669 #else /* not BFD_ASSEMBLER */
1670
1671 #include "frags.h"
1672 /* This is needed because we include internal bfd things. */
1673 #include <time.h>
1674
1675 #include "libbfd.h"
1676 #include "libcoff.h"
1677
1678 #ifdef TE_PE
1679 #include "coff/pe.h"
1680 #endif
1681
1682 /* The NOP_OPCODE is for the alignment fill value. Fill with nop so
1683 that we can stick sections together without causing trouble. */
1684 #ifndef NOP_OPCODE
1685 #define NOP_OPCODE 0x00
1686 #endif
1687
1688 /* The zeroes if symbol name is longer than 8 chars */
1689 #define S_SET_ZEROES(s,v) ((s)->sy_symbol.ost_entry.n_zeroes = (v))
1690
1691 #define MIN(a,b) ((a) < (b)? (a) : (b))
1692
1693 /* This vector is used to turn a gas internal segment number into a
1694 section number suitable for insertion into a coff symbol table.
1695 This must correspond to seg_info_off_by_4. */
1696
1697 const short seg_N_TYPE[] =
1698 { /* in: segT out: N_TYPE bits */
1699 C_ABS_SECTION,
1700 1, 2, 3, 4, 5, 6, 7, 8, 9, 10,
1701 11, 12, 13, 14, 15, 16, 17, 18, 19, 20,
1702 21, 22, 23, 24, 25, 26, 27, 28, 29, 30,
1703 31, 32, 33, 34, 35, 36, 37, 38, 39, 40,
1704 C_UNDEF_SECTION, /* SEG_UNKNOWN */
1705 C_UNDEF_SECTION, /* SEG_GOOF */
1706 C_UNDEF_SECTION, /* SEG_EXPR */
1707 C_DEBUG_SECTION, /* SEG_DEBUG */
1708 C_NTV_SECTION, /* SEG_NTV */
1709 C_PTV_SECTION, /* SEG_PTV */
1710 C_REGISTER_SECTION, /* SEG_REGISTER */
1711 };
1712
1713 int function_lineoff = -1; /* Offset in line#s where the last function
1714 started (the odd entry for line #0) */
1715
1716 /* structure used to keep the filenames which
1717 are too long around so that we can stick them
1718 into the string table */
1719 struct filename_list
1720 {
1721 char *filename;
1722 struct filename_list *next;
1723 };
1724
1725 static struct filename_list *filename_list_head;
1726 static struct filename_list *filename_list_tail;
1727
1728 static symbolS *last_line_symbol;
1729
1730 /* Add 4 to the real value to get the index and compensate the
1731 negatives. This vector is used by S_GET_SEGMENT to turn a coff
1732 section number into a segment number
1733 */
1734 static symbolS *previous_file_symbol;
1735 void c_symbol_merge ();
1736 static int line_base;
1737
1738 symbolS *c_section_symbol ();
1739 bfd *abfd;
1740
1741 static void fixup_segment PARAMS ((segment_info_type *segP,
1742 segT this_segment_type));
1743
1744 static void fixup_mdeps PARAMS ((fragS *,
1745 object_headers *,
1746 segT));
1747
1748 static void fill_section PARAMS ((bfd * abfd,
1749 object_headers *,
1750 unsigned long *));
1751
1752 static int c_line_new PARAMS ((symbolS * symbol, long paddr,
1753 int line_number,
1754 fragS * frag));
1755
1756 static void w_symbols PARAMS ((bfd * abfd, char *where,
1757 symbolS * symbol_rootP));
1758
1759 static void adjust_stab_section PARAMS ((bfd *abfd, segT seg));
1760
1761 static void obj_coff_lcomm PARAMS ((int));
1762 static void obj_coff_text PARAMS ((int));
1763 static void obj_coff_data PARAMS ((int));
1764 void obj_coff_section PARAMS ((int));
1765
1766 /* When not using BFD_ASSEMBLER, we permit up to 40 sections.
1767
1768 This array maps a COFF section number into a gas section number.
1769 Because COFF uses negative section numbers, you must add 4 to the
1770 COFF section number when indexing into this array; this is done via
1771 the SEG_INFO_FROM_SECTION_NUMBER macro. This must correspond to
1772 seg_N_TYPE. */
1773
1774 static const segT seg_info_off_by_4[] =
1775 {
1776 SEG_PTV,
1777 SEG_NTV,
1778 SEG_DEBUG,
1779 SEG_ABSOLUTE,
1780 SEG_UNKNOWN,
1781 SEG_E0, SEG_E1, SEG_E2, SEG_E3, SEG_E4,
1782 SEG_E5, SEG_E6, SEG_E7, SEG_E8, SEG_E9,
1783 SEG_E10, SEG_E11, SEG_E12, SEG_E13, SEG_E14,
1784 SEG_E15, SEG_E16, SEG_E17, SEG_E18, SEG_E19,
1785 SEG_E20, SEG_E21, SEG_E22, SEG_E23, SEG_E24,
1786 SEG_E25, SEG_E26, SEG_E27, SEG_E28, SEG_E29,
1787 SEG_E30, SEG_E31, SEG_E32, SEG_E33, SEG_E34,
1788 SEG_E35, SEG_E36, SEG_E37, SEG_E38, SEG_E39,
1789 (segT) 40,
1790 (segT) 41,
1791 (segT) 42,
1792 (segT) 43,
1793 (segT) 44,
1794 (segT) 45,
1795 (segT) 0,
1796 (segT) 0,
1797 (segT) 0,
1798 SEG_REGISTER
1799 };
1800
1801 #define SEG_INFO_FROM_SECTION_NUMBER(x) (seg_info_off_by_4[(x)+4])
1802
1803 static relax_addressT
1804 relax_align (address, alignment)
1805 relax_addressT address;
1806 long alignment;
1807 {
1808 relax_addressT mask;
1809 relax_addressT new_address;
1810
1811 mask = ~((~0) << alignment);
1812 new_address = (address + mask) & (~mask);
1813 return (new_address - address);
1814 }
1815
1816 segT
1817 s_get_segment (x)
1818 symbolS * x;
1819 {
1820 return SEG_INFO_FROM_SECTION_NUMBER (x->sy_symbol.ost_entry.n_scnum);
1821 }
1822
1823 /* calculate the size of the frag chain and fill in the section header
1824 to contain all of it, also fill in the addr of the sections */
1825 static unsigned int
1826 size_section (abfd, idx)
1827 bfd *abfd ATTRIBUTE_UNUSED;
1828 unsigned int idx;
1829 {
1830
1831 unsigned int size = 0;
1832 fragS *frag = segment_info[idx].frchainP->frch_root;
1833 while (frag)
1834 {
1835 size = frag->fr_address;
1836 if (frag->fr_address != size)
1837 {
1838 fprintf (stderr, _("Out of step\n"));
1839 size = frag->fr_address;
1840 }
1841
1842 switch (frag->fr_type)
1843 {
1844 #ifdef TC_COFF_SIZEMACHDEP
1845 case rs_machine_dependent:
1846 size += TC_COFF_SIZEMACHDEP (frag);
1847 break;
1848 #endif
1849 case rs_space:
1850 case rs_fill:
1851 case rs_org:
1852 size += frag->fr_fix;
1853 size += frag->fr_offset * frag->fr_var;
1854 break;
1855 case rs_align:
1856 case rs_align_code:
1857 case rs_align_test:
1858 {
1859 addressT off;
1860
1861 size += frag->fr_fix;
1862 off = relax_align (size, frag->fr_offset);
1863 if (frag->fr_subtype != 0 && off > frag->fr_subtype)
1864 off = 0;
1865 size += off;
1866 }
1867 break;
1868 default:
1869 BAD_CASE (frag->fr_type);
1870 break;
1871 }
1872 frag = frag->fr_next;
1873 }
1874 segment_info[idx].scnhdr.s_size = size;
1875 return size;
1876 }
1877
1878 static unsigned int
1879 count_entries_in_chain (idx)
1880 unsigned int idx;
1881 {
1882 unsigned int nrelocs;
1883 fixS *fixup_ptr;
1884
1885 /* Count the relocations */
1886 fixup_ptr = segment_info[idx].fix_root;
1887 nrelocs = 0;
1888 while (fixup_ptr != (fixS *) NULL)
1889 {
1890 if (fixup_ptr->fx_done == 0 && TC_COUNT_RELOC (fixup_ptr))
1891 {
1892 #ifdef TC_A29K
1893 if (fixup_ptr->fx_r_type == RELOC_CONSTH)
1894 nrelocs += 2;
1895 else
1896 nrelocs++;
1897 #else
1898 nrelocs++;
1899 #endif
1900 }
1901
1902 fixup_ptr = fixup_ptr->fx_next;
1903 }
1904 return nrelocs;
1905 }
1906
1907 #ifdef TE_AUX
1908
1909 static int compare_external_relocs PARAMS ((const PTR, const PTR));
1910
1911 /* AUX's ld expects relocations to be sorted */
1912 static int
1913 compare_external_relocs (x, y)
1914 const PTR x;
1915 const PTR y;
1916 {
1917 struct external_reloc *a = (struct external_reloc *) x;
1918 struct external_reloc *b = (struct external_reloc *) y;
1919 bfd_vma aadr = bfd_getb32 (a->r_vaddr);
1920 bfd_vma badr = bfd_getb32 (b->r_vaddr);
1921 return (aadr < badr ? -1 : badr < aadr ? 1 : 0);
1922 }
1923
1924 #endif
1925
1926 /* output all the relocations for a section */
1927 void
1928 do_relocs_for (abfd, h, file_cursor)
1929 bfd * abfd;
1930 object_headers * h;
1931 unsigned long *file_cursor;
1932 {
1933 unsigned int nrelocs;
1934 unsigned int idx;
1935 unsigned long reloc_start = *file_cursor;
1936
1937 for (idx = SEG_E0; idx < SEG_LAST; idx++)
1938 {
1939 if (segment_info[idx].scnhdr.s_name[0])
1940 {
1941 struct external_reloc *ext_ptr;
1942 struct external_reloc *external_reloc_vec;
1943 unsigned int external_reloc_size;
1944 unsigned int base = segment_info[idx].scnhdr.s_paddr;
1945 fixS *fix_ptr = segment_info[idx].fix_root;
1946 nrelocs = count_entries_in_chain (idx);
1947
1948 if (nrelocs)
1949 /* Bypass this stuff if no relocs. This also incidentally
1950 avoids a SCO bug, where free(malloc(0)) tends to crash. */
1951 {
1952 external_reloc_size = nrelocs * RELSZ;
1953 external_reloc_vec =
1954 (struct external_reloc *) malloc (external_reloc_size);
1955
1956 ext_ptr = external_reloc_vec;
1957
1958 /* Fill in the internal coff style reloc struct from the
1959 internal fix list. */
1960 while (fix_ptr)
1961 {
1962 struct internal_reloc intr;
1963
1964 /* Only output some of the relocations */
1965 if (fix_ptr->fx_done == 0 && TC_COUNT_RELOC (fix_ptr))
1966 {
1967 #ifdef TC_RELOC_MANGLE
1968 TC_RELOC_MANGLE (&segment_info[idx], fix_ptr, &intr,
1969 base);
1970
1971 #else
1972 symbolS *dot;
1973 symbolS *symbol_ptr = fix_ptr->fx_addsy;
1974
1975 intr.r_type = TC_COFF_FIX2RTYPE (fix_ptr);
1976 intr.r_vaddr =
1977 base + fix_ptr->fx_frag->fr_address + fix_ptr->fx_where;
1978
1979 #ifdef TC_KEEP_FX_OFFSET
1980 intr.r_offset = fix_ptr->fx_offset;
1981 #else
1982 intr.r_offset = 0;
1983 #endif
1984
1985 while (symbol_ptr->sy_value.X_op == O_symbol
1986 && (! S_IS_DEFINED (symbol_ptr)
1987 || S_IS_COMMON (symbol_ptr)))
1988 {
1989 symbolS *n;
1990
1991 /* We must avoid looping, as that can occur
1992 with a badly written program. */
1993 n = symbol_ptr->sy_value.X_add_symbol;
1994 if (n == symbol_ptr)
1995 break;
1996 symbol_ptr = n;
1997 }
1998
1999 /* Turn the segment of the symbol into an offset. */
2000 if (symbol_ptr)
2001 {
2002 resolve_symbol_value (symbol_ptr);
2003 if (! symbol_ptr->sy_resolved)
2004 {
2005 char *file;
2006 unsigned int line;
2007
2008 if (expr_symbol_where (symbol_ptr, &file, &line))
2009 as_bad_where (file, line,
2010 _("unresolved relocation"));
2011 else
2012 as_bad (_("bad relocation: symbol `%s' not in symbol table"),
2013 S_GET_NAME (symbol_ptr));
2014 }
2015 dot = segment_info[S_GET_SEGMENT (symbol_ptr)].dot;
2016 if (dot)
2017 {
2018 intr.r_symndx = dot->sy_number;
2019 }
2020 else
2021 {
2022 intr.r_symndx = symbol_ptr->sy_number;
2023 }
2024
2025 }
2026 else
2027 {
2028 intr.r_symndx = -1;
2029 }
2030 #endif
2031
2032 (void) bfd_coff_swap_reloc_out (abfd, &intr, ext_ptr);
2033 ext_ptr++;
2034
2035 #if defined(TC_A29K)
2036
2037 /* The 29k has a special kludge for the high 16 bit
2038 reloc. Two relocations are emited, R_IHIHALF,
2039 and R_IHCONST. The second one doesn't contain a
2040 symbol, but uses the value for offset. */
2041
2042 if (intr.r_type == R_IHIHALF)
2043 {
2044 /* now emit the second bit */
2045 intr.r_type = R_IHCONST;
2046 intr.r_symndx = fix_ptr->fx_addnumber;
2047 (void) bfd_coff_swap_reloc_out (abfd, &intr, ext_ptr);
2048 ext_ptr++;
2049 }
2050 #endif
2051 }
2052
2053 fix_ptr = fix_ptr->fx_next;
2054 }
2055
2056 #ifdef TE_AUX
2057 /* Sort the reloc table */
2058 qsort ((PTR) external_reloc_vec, nrelocs,
2059 sizeof (struct external_reloc), compare_external_relocs);
2060 #endif
2061
2062 /* Write out the reloc table */
2063 bfd_bwrite ((PTR) external_reloc_vec,
2064 (bfd_size_type) external_reloc_size, abfd);
2065 free (external_reloc_vec);
2066
2067 /* Fill in section header info. */
2068 segment_info[idx].scnhdr.s_relptr = *file_cursor;
2069 *file_cursor += external_reloc_size;
2070 segment_info[idx].scnhdr.s_nreloc = nrelocs;
2071 }
2072 else
2073 {
2074 /* No relocs */
2075 segment_info[idx].scnhdr.s_relptr = 0;
2076 }
2077 }
2078 }
2079 /* Set relocation_size field in file headers */
2080 H_SET_RELOCATION_SIZE (h, *file_cursor - reloc_start, 0);
2081 }
2082
2083 /* run through a frag chain and write out the data to go with it, fill
2084 in the scnhdrs with the info on the file postions
2085 */
2086 static void
2087 fill_section (abfd, h, file_cursor)
2088 bfd * abfd;
2089 object_headers *h ATTRIBUTE_UNUSED;
2090 unsigned long *file_cursor;
2091 {
2092
2093 unsigned int i;
2094 unsigned int paddr = 0;
2095
2096 for (i = SEG_E0; i < SEG_UNKNOWN; i++)
2097 {
2098 unsigned int offset = 0;
2099 struct internal_scnhdr *s = &(segment_info[i].scnhdr);
2100
2101 PROGRESS (1);
2102
2103 if (s->s_name[0])
2104 {
2105 fragS *frag = segment_info[i].frchainP->frch_root;
2106 char *buffer = NULL;
2107
2108 if (s->s_size == 0)
2109 s->s_scnptr = 0;
2110 else
2111 {
2112 buffer = xmalloc (s->s_size);
2113 s->s_scnptr = *file_cursor;
2114 }
2115 know (s->s_paddr == paddr);
2116
2117 if (strcmp (s->s_name, ".text") == 0)
2118 s->s_flags |= STYP_TEXT;
2119 else if (strcmp (s->s_name, ".data") == 0)
2120 s->s_flags |= STYP_DATA;
2121 else if (strcmp (s->s_name, ".bss") == 0)
2122 {
2123 s->s_scnptr = 0;
2124 s->s_flags |= STYP_BSS;
2125
2126 /* @@ Should make the i386 and a29k coff targets define
2127 COFF_NOLOAD_PROBLEM, and have only one test here. */
2128 #ifndef TC_I386
2129 #ifndef TC_A29K
2130 #ifndef COFF_NOLOAD_PROBLEM
2131 /* Apparently the SVR3 linker (and exec syscall) and UDI
2132 mondfe progrem are confused by noload sections. */
2133 s->s_flags |= STYP_NOLOAD;
2134 #endif
2135 #endif
2136 #endif
2137 }
2138 else if (strcmp (s->s_name, ".lit") == 0)
2139 s->s_flags = STYP_LIT | STYP_TEXT;
2140 else if (strcmp (s->s_name, ".init") == 0)
2141 s->s_flags |= STYP_TEXT;
2142 else if (strcmp (s->s_name, ".fini") == 0)
2143 s->s_flags |= STYP_TEXT;
2144 else if (strncmp (s->s_name, ".comment", 8) == 0)
2145 s->s_flags |= STYP_INFO;
2146
2147 while (frag)
2148 {
2149 unsigned int fill_size;
2150 switch (frag->fr_type)
2151 {
2152 case rs_machine_dependent:
2153 if (frag->fr_fix)
2154 {
2155 memcpy (buffer + frag->fr_address,
2156 frag->fr_literal,
2157 (unsigned int) frag->fr_fix);
2158 offset += frag->fr_fix;
2159 }
2160
2161 break;
2162 case rs_space:
2163 case rs_fill:
2164 case rs_align:
2165 case rs_align_code:
2166 case rs_align_test:
2167 case rs_org:
2168 if (frag->fr_fix)
2169 {
2170 memcpy (buffer + frag->fr_address,
2171 frag->fr_literal,
2172 (unsigned int) frag->fr_fix);
2173 offset += frag->fr_fix;
2174 }
2175
2176 fill_size = frag->fr_var;
2177 if (fill_size && frag->fr_offset > 0)
2178 {
2179 unsigned int count;
2180 unsigned int off = frag->fr_fix;
2181 for (count = frag->fr_offset; count; count--)
2182 {
2183 if (fill_size + frag->fr_address + off <= s->s_size)
2184 {
2185 memcpy (buffer + frag->fr_address + off,
2186 frag->fr_literal + frag->fr_fix,
2187 fill_size);
2188 off += fill_size;
2189 offset += fill_size;
2190 }
2191 }
2192 }
2193 break;
2194 case rs_broken_word:
2195 break;
2196 default:
2197 abort ();
2198 }
2199 frag = frag->fr_next;
2200 }
2201
2202 if (s->s_size != 0)
2203 {
2204 if (s->s_scnptr != 0)
2205 {
2206 bfd_bwrite (buffer, s->s_size, abfd);
2207 *file_cursor += s->s_size;
2208 }
2209 free (buffer);
2210 }
2211 paddr += s->s_size;
2212 }
2213 }
2214 }
2215
2216 /* Coff file generation & utilities */
2217
2218 static void
2219 coff_header_append (abfd, h)
2220 bfd * abfd;
2221 object_headers * h;
2222 {
2223 unsigned int i;
2224 char buffer[1000];
2225 char buffero[1000];
2226 #ifdef COFF_LONG_SECTION_NAMES
2227 unsigned long string_size = 4;
2228 #endif
2229
2230 bfd_seek (abfd, (file_ptr) 0, 0);
2231
2232 #ifndef OBJ_COFF_OMIT_OPTIONAL_HEADER
2233 H_SET_MAGIC_NUMBER (h, COFF_MAGIC);
2234 H_SET_VERSION_STAMP (h, 0);
2235 H_SET_ENTRY_POINT (h, 0);
2236 H_SET_TEXT_START (h, segment_info[SEG_E0].frchainP->frch_root->fr_address);
2237 H_SET_DATA_START (h, segment_info[SEG_E1].frchainP->frch_root->fr_address);
2238 H_SET_SIZEOF_OPTIONAL_HEADER (h, bfd_coff_swap_aouthdr_out(abfd, &h->aouthdr,
2239 buffero));
2240 #else /* defined (OBJ_COFF_OMIT_OPTIONAL_HEADER) */
2241 H_SET_SIZEOF_OPTIONAL_HEADER (h, 0);
2242 #endif /* defined (OBJ_COFF_OMIT_OPTIONAL_HEADER) */
2243
2244 i = bfd_coff_swap_filehdr_out (abfd, &h->filehdr, buffer);
2245
2246 bfd_bwrite (buffer, (bfd_size_type) i, abfd);
2247 bfd_bwrite (buffero, (bfd_size_type) H_GET_SIZEOF_OPTIONAL_HEADER (h), abfd);
2248
2249 for (i = SEG_E0; i < SEG_LAST; i++)
2250 {
2251 if (segment_info[i].scnhdr.s_name[0])
2252 {
2253 unsigned int size;
2254
2255 #ifdef COFF_LONG_SECTION_NAMES
2256 /* Support long section names as found in PE. This code
2257 must coordinate with that in write_object_file and
2258 w_strings. */
2259 if (strlen (segment_info[i].name) > SCNNMLEN)
2260 {
2261 memset (segment_info[i].scnhdr.s_name, 0, SCNNMLEN);
2262 sprintf (segment_info[i].scnhdr.s_name, "/%lu", string_size);
2263 string_size += strlen (segment_info[i].name) + 1;
2264 }
2265 #endif
2266
2267 size = bfd_coff_swap_scnhdr_out (abfd,
2268 &(segment_info[i].scnhdr),
2269 buffer);
2270 if (size == 0)
2271 as_bad (_("bfd_coff_swap_scnhdr_out failed"));
2272 bfd_bwrite (buffer, (bfd_size_type) size, abfd);
2273 }
2274 }
2275 }
2276
2277 char *
2278 symbol_to_chars (abfd, where, symbolP)
2279 bfd * abfd;
2280 char *where;
2281 symbolS * symbolP;
2282 {
2283 unsigned int numaux = symbolP->sy_symbol.ost_entry.n_numaux;
2284 unsigned int i;
2285 valueT val;
2286
2287 /* Turn any symbols with register attributes into abs symbols */
2288 if (S_GET_SEGMENT (symbolP) == reg_section)
2289 {
2290 S_SET_SEGMENT (symbolP, absolute_section);
2291 }
2292 /* At the same time, relocate all symbols to their output value */
2293
2294 #ifndef TE_PE
2295 val = (segment_info[S_GET_SEGMENT (symbolP)].scnhdr.s_paddr
2296 + S_GET_VALUE (symbolP));
2297 #else
2298 val = S_GET_VALUE (symbolP);
2299 #endif
2300
2301 S_SET_VALUE (symbolP, val);
2302
2303 symbolP->sy_symbol.ost_entry.n_value = val;
2304
2305 where += bfd_coff_swap_sym_out (abfd, &symbolP->sy_symbol.ost_entry,
2306 where);
2307
2308 for (i = 0; i < numaux; i++)
2309 {
2310 where += bfd_coff_swap_aux_out (abfd,
2311 &symbolP->sy_symbol.ost_auxent[i],
2312 S_GET_DATA_TYPE (symbolP),
2313 S_GET_STORAGE_CLASS (symbolP),
2314 i, numaux, where);
2315 }
2316 return where;
2317
2318 }
2319
2320 void
2321 coff_obj_symbol_new_hook (symbolP)
2322 symbolS *symbolP;
2323 {
2324 char underscore = 0; /* Symbol has leading _ */
2325
2326 /* Effective symbol */
2327 /* Store the pointer in the offset. */
2328 S_SET_ZEROES (symbolP, 0L);
2329 S_SET_DATA_TYPE (symbolP, T_NULL);
2330 S_SET_STORAGE_CLASS (symbolP, 0);
2331 S_SET_NUMBER_AUXILIARY (symbolP, 0);
2332 /* Additional information */
2333 symbolP->sy_symbol.ost_flags = 0;
2334 /* Auxiliary entries */
2335 memset ((char *) &symbolP->sy_symbol.ost_auxent[0], 0, AUXESZ);
2336
2337 if (S_IS_STRING (symbolP))
2338 SF_SET_STRING (symbolP);
2339 if (!underscore && S_IS_LOCAL (symbolP))
2340 SF_SET_LOCAL (symbolP);
2341 }
2342
2343 /*
2344 * Handle .ln directives.
2345 */
2346
2347 static void
2348 obj_coff_ln (appline)
2349 int appline;
2350 {
2351 int l;
2352
2353 if (! appline && def_symbol_in_progress != NULL)
2354 {
2355 as_warn (_(".ln pseudo-op inside .def/.endef: ignored."));
2356 demand_empty_rest_of_line ();
2357 return;
2358 } /* wrong context */
2359
2360 l = get_absolute_expression ();
2361 c_line_new (0, frag_now_fix (), l, frag_now);
2362
2363 if (appline)
2364 new_logical_line ((char *) NULL, l - 1);
2365
2366 #ifndef NO_LISTING
2367 {
2368 extern int listing;
2369
2370 if (listing)
2371 {
2372 if (! appline)
2373 l += line_base - 1;
2374 listing_source_line ((unsigned int) l);
2375 }
2376
2377 }
2378 #endif
2379 demand_empty_rest_of_line ();
2380 }
2381
2382 /*
2383 * def()
2384 *
2385 * Handle .def directives.
2386 *
2387 * One might ask : why can't we symbol_new if the symbol does not
2388 * already exist and fill it with debug information. Because of
2389 * the C_EFCN special symbol. It would clobber the value of the
2390 * function symbol before we have a chance to notice that it is
2391 * a C_EFCN. And a second reason is that the code is more clear this
2392 * way. (at least I think it is :-).
2393 *
2394 */
2395
2396 #define SKIP_SEMI_COLON() while (*input_line_pointer++ != ';')
2397 #define SKIP_WHITESPACES() while (*input_line_pointer == ' ' || \
2398 *input_line_pointer == '\t') \
2399 input_line_pointer++;
2400
2401 static void
2402 obj_coff_def (what)
2403 int what ATTRIBUTE_UNUSED;
2404 {
2405 char name_end; /* Char after the end of name */
2406 char *symbol_name; /* Name of the debug symbol */
2407 char *symbol_name_copy; /* Temporary copy of the name */
2408 unsigned int symbol_name_length;
2409
2410 if (def_symbol_in_progress != NULL)
2411 {
2412 as_warn (_(".def pseudo-op used inside of .def/.endef: ignored."));
2413 demand_empty_rest_of_line ();
2414 return;
2415 } /* if not inside .def/.endef */
2416
2417 SKIP_WHITESPACES ();
2418
2419 def_symbol_in_progress = (symbolS *) obstack_alloc (&notes, sizeof (*def_symbol_in_progress));
2420 memset (def_symbol_in_progress, 0, sizeof (*def_symbol_in_progress));
2421
2422 symbol_name = input_line_pointer;
2423 name_end = get_symbol_end ();
2424 symbol_name_length = strlen (symbol_name);
2425 symbol_name_copy = xmalloc (symbol_name_length + 1);
2426 strcpy (symbol_name_copy, symbol_name);
2427 #ifdef tc_canonicalize_symbol_name
2428 symbol_name_copy = tc_canonicalize_symbol_name (symbol_name_copy);
2429 #endif
2430
2431 /* Initialize the new symbol */
2432 #ifdef STRIP_UNDERSCORE
2433 S_SET_NAME (def_symbol_in_progress, (*symbol_name_copy == '_'
2434 ? symbol_name_copy + 1
2435 : symbol_name_copy));
2436 #else /* STRIP_UNDERSCORE */
2437 S_SET_NAME (def_symbol_in_progress, symbol_name_copy);
2438 #endif /* STRIP_UNDERSCORE */
2439 /* free(symbol_name_copy); */
2440 def_symbol_in_progress->sy_name_offset = (unsigned long) ~0;
2441 def_symbol_in_progress->sy_number = ~0;
2442 def_symbol_in_progress->sy_frag = &zero_address_frag;
2443 S_SET_VALUE (def_symbol_in_progress, 0);
2444
2445 if (S_IS_STRING (def_symbol_in_progress))
2446 SF_SET_STRING (def_symbol_in_progress);
2447
2448 *input_line_pointer = name_end;
2449
2450 demand_empty_rest_of_line ();
2451 }
2452
2453 unsigned int dim_index;
2454
2455 static void
2456 obj_coff_endef (ignore)
2457 int ignore ATTRIBUTE_UNUSED;
2458 {
2459 symbolS *symbolP = 0;
2460 /* DIM BUG FIX sac@cygnus.com */
2461 dim_index = 0;
2462 if (def_symbol_in_progress == NULL)
2463 {
2464 as_warn (_(".endef pseudo-op used outside of .def/.endef: ignored."));
2465 demand_empty_rest_of_line ();
2466 return;
2467 } /* if not inside .def/.endef */
2468
2469 /* Set the section number according to storage class. */
2470 switch (S_GET_STORAGE_CLASS (def_symbol_in_progress))
2471 {
2472 case C_STRTAG:
2473 case C_ENTAG:
2474 case C_UNTAG:
2475 SF_SET_TAG (def_symbol_in_progress);
2476 /* intentional fallthrough */
2477 case C_FILE:
2478 case C_TPDEF:
2479 SF_SET_DEBUG (def_symbol_in_progress);
2480 S_SET_SEGMENT (def_symbol_in_progress, SEG_DEBUG);
2481 break;
2482
2483 case C_EFCN:
2484 SF_SET_LOCAL (def_symbol_in_progress); /* Do not emit this symbol. */
2485 /* intentional fallthrough */
2486 case C_BLOCK:
2487 SF_SET_PROCESS (def_symbol_in_progress); /* Will need processing before writing */
2488 /* intentional fallthrough */
2489 case C_FCN:
2490 S_SET_SEGMENT (def_symbol_in_progress, SEG_E0);
2491
2492 if (strcmp (S_GET_NAME (def_symbol_in_progress), ".bf") == 0)
2493 { /* .bf */
2494 if (function_lineoff < 0)
2495 {
2496 fprintf (stderr, _("`.bf' symbol without preceding function\n"));
2497 } /* missing function symbol */
2498 SA_GET_SYM_LNNOPTR (last_line_symbol) = function_lineoff;
2499
2500 SF_SET_PROCESS (last_line_symbol);
2501 SF_SET_ADJ_LNNOPTR (last_line_symbol);
2502 SF_SET_PROCESS (def_symbol_in_progress);
2503 function_lineoff = -1;
2504 }
2505 /* Value is always set to . */
2506 def_symbol_in_progress->sy_frag = frag_now;
2507 S_SET_VALUE (def_symbol_in_progress, (valueT) frag_now_fix ());
2508 break;
2509
2510 #ifdef C_AUTOARG
2511 case C_AUTOARG:
2512 #endif /* C_AUTOARG */
2513 case C_AUTO:
2514 case C_REG:
2515 case C_MOS:
2516 case C_MOE:
2517 case C_MOU:
2518 case C_ARG:
2519 case C_REGPARM:
2520 case C_FIELD:
2521 case C_EOS:
2522 SF_SET_DEBUG (def_symbol_in_progress);
2523 S_SET_SEGMENT (def_symbol_in_progress, absolute_section);
2524 break;
2525
2526 case C_EXT:
2527 case C_WEAKEXT:
2528 #ifdef TE_PE
2529 case C_NT_WEAK:
2530 #endif
2531 case C_STAT:
2532 case C_LABEL:
2533 /* Valid but set somewhere else (s_comm, s_lcomm, colon) */
2534 break;
2535
2536 case C_USTATIC:
2537 case C_EXTDEF:
2538 case C_ULABEL:
2539 as_warn (_("unexpected storage class %d"), S_GET_STORAGE_CLASS (def_symbol_in_progress));
2540 break;
2541 } /* switch on storage class */
2542
2543 /* Now that we have built a debug symbol, try to find if we should
2544 merge with an existing symbol or not. If a symbol is C_EFCN or
2545 absolute_section or untagged SEG_DEBUG it never merges. We also
2546 don't merge labels, which are in a different namespace, nor
2547 symbols which have not yet been defined since they are typically
2548 unique, nor do we merge tags with non-tags. */
2549
2550 /* Two cases for functions. Either debug followed by definition or
2551 definition followed by debug. For definition first, we will
2552 merge the debug symbol into the definition. For debug first, the
2553 lineno entry MUST point to the definition function or else it
2554 will point off into space when crawl_symbols() merges the debug
2555 symbol into the real symbol. Therefor, let's presume the debug
2556 symbol is a real function reference. */
2557
2558 /* FIXME-SOON If for some reason the definition label/symbol is
2559 never seen, this will probably leave an undefined symbol at link
2560 time. */
2561
2562 if (S_GET_STORAGE_CLASS (def_symbol_in_progress) == C_EFCN
2563 || S_GET_STORAGE_CLASS (def_symbol_in_progress) == C_LABEL
2564 || (S_GET_SEGMENT (def_symbol_in_progress) == SEG_DEBUG
2565 && !SF_GET_TAG (def_symbol_in_progress))
2566 || S_GET_SEGMENT (def_symbol_in_progress) == absolute_section
2567 || def_symbol_in_progress->sy_value.X_op != O_constant
2568 || (symbolP = symbol_find_base (S_GET_NAME (def_symbol_in_progress), DO_NOT_STRIP)) == NULL
2569 || (SF_GET_TAG (def_symbol_in_progress) != SF_GET_TAG (symbolP)))
2570 {
2571 symbol_append (def_symbol_in_progress, symbol_lastP, &symbol_rootP,
2572 &symbol_lastP);
2573 }
2574 else
2575 {
2576 /* This symbol already exists, merge the newly created symbol
2577 into the old one. This is not mandatory. The linker can
2578 handle duplicate symbols correctly. But I guess that it save
2579 a *lot* of space if the assembly file defines a lot of
2580 symbols. [loic] */
2581
2582 /* The debug entry (def_symbol_in_progress) is merged into the
2583 previous definition. */
2584
2585 c_symbol_merge (def_symbol_in_progress, symbolP);
2586 /* FIXME-SOON Should *def_symbol_in_progress be free'd? xoxorich. */
2587 def_symbol_in_progress = symbolP;
2588
2589 if (SF_GET_FUNCTION (def_symbol_in_progress)
2590 || SF_GET_TAG (def_symbol_in_progress)
2591 || S_GET_STORAGE_CLASS (def_symbol_in_progress) == C_STAT)
2592 {
2593 /* For functions, and tags, and static symbols, the symbol
2594 *must* be where the debug symbol appears. Move the
2595 existing symbol to the current place. */
2596 /* If it already is at the end of the symbol list, do nothing */
2597 if (def_symbol_in_progress != symbol_lastP)
2598 {
2599 symbol_remove (def_symbol_in_progress, &symbol_rootP,
2600 &symbol_lastP);
2601 symbol_append (def_symbol_in_progress, symbol_lastP,
2602 &symbol_rootP, &symbol_lastP);
2603 } /* if not already in place */
2604 } /* if function */
2605 } /* normal or mergable */
2606
2607 if (SF_GET_TAG (def_symbol_in_progress))
2608 {
2609 symbolS *oldtag;
2610
2611 oldtag = symbol_find_base (S_GET_NAME (def_symbol_in_progress),
2612 DO_NOT_STRIP);
2613 if (oldtag == NULL || ! SF_GET_TAG (oldtag))
2614 tag_insert (S_GET_NAME (def_symbol_in_progress),
2615 def_symbol_in_progress);
2616 }
2617
2618 if (SF_GET_FUNCTION (def_symbol_in_progress))
2619 {
2620 know (sizeof (def_symbol_in_progress) <= sizeof (long));
2621 function_lineoff
2622 = c_line_new (def_symbol_in_progress, 0, 0, &zero_address_frag);
2623
2624 SF_SET_PROCESS (def_symbol_in_progress);
2625
2626 if (symbolP == NULL)
2627 {
2628 /* That is, if this is the first time we've seen the
2629 function... */
2630 symbol_table_insert (def_symbol_in_progress);
2631 } /* definition follows debug */
2632 } /* Create the line number entry pointing to the function being defined */
2633
2634 def_symbol_in_progress = NULL;
2635 demand_empty_rest_of_line ();
2636 }
2637
2638 static void
2639 obj_coff_dim (ignore)
2640 int ignore ATTRIBUTE_UNUSED;
2641 {
2642 int dim_index;
2643
2644 if (def_symbol_in_progress == NULL)
2645 {
2646 as_warn (_(".dim pseudo-op used outside of .def/.endef: ignored."));
2647 demand_empty_rest_of_line ();
2648 return;
2649 } /* if not inside .def/.endef */
2650
2651 S_SET_NUMBER_AUXILIARY (def_symbol_in_progress, 1);
2652
2653 for (dim_index = 0; dim_index < DIMNUM; dim_index++)
2654 {
2655 SKIP_WHITESPACES ();
2656 SA_SET_SYM_DIMEN (def_symbol_in_progress, dim_index,
2657 get_absolute_expression ());
2658
2659 switch (*input_line_pointer)
2660 {
2661 case ',':
2662 input_line_pointer++;
2663 break;
2664
2665 default:
2666 as_warn (_("badly formed .dim directive ignored"));
2667 /* intentional fallthrough */
2668 case '\n':
2669 case ';':
2670 dim_index = DIMNUM;
2671 break;
2672 }
2673 }
2674
2675 demand_empty_rest_of_line ();
2676 }
2677
2678 static void
2679 obj_coff_line (ignore)
2680 int ignore ATTRIBUTE_UNUSED;
2681 {
2682 int this_base;
2683 const char *name;
2684
2685 if (def_symbol_in_progress == NULL)
2686 {
2687 obj_coff_ln (0);
2688 return;
2689 }
2690
2691 name = S_GET_NAME (def_symbol_in_progress);
2692 this_base = get_absolute_expression ();
2693
2694 /* Only .bf symbols indicate the use of a new base line number; the
2695 line numbers associated with .ef, .bb, .eb are relative to the
2696 start of the containing function. */
2697 if (!strcmp (".bf", name))
2698 {
2699 #if 0 /* XXX Can we ever have line numbers going backwards? */
2700 if (this_base > line_base)
2701 #endif
2702 {
2703 line_base = this_base;
2704 }
2705
2706 #ifndef NO_LISTING
2707 {
2708 extern int listing;
2709 if (listing)
2710 {
2711 listing_source_line ((unsigned int) line_base);
2712 }
2713 }
2714 #endif
2715 }
2716
2717 S_SET_NUMBER_AUXILIARY (def_symbol_in_progress, 1);
2718 SA_SET_SYM_LNNO (def_symbol_in_progress, this_base);
2719
2720 demand_empty_rest_of_line ();
2721 }
2722
2723 static void
2724 obj_coff_size (ignore)
2725 int ignore ATTRIBUTE_UNUSED;
2726 {
2727 if (def_symbol_in_progress == NULL)
2728 {
2729 as_warn (_(".size pseudo-op used outside of .def/.endef ignored."));
2730 demand_empty_rest_of_line ();
2731 return;
2732 } /* if not inside .def/.endef */
2733
2734 S_SET_NUMBER_AUXILIARY (def_symbol_in_progress, 1);
2735 SA_SET_SYM_SIZE (def_symbol_in_progress, get_absolute_expression ());
2736 demand_empty_rest_of_line ();
2737 }
2738
2739 static void
2740 obj_coff_scl (ignore)
2741 int ignore ATTRIBUTE_UNUSED;
2742 {
2743 if (def_symbol_in_progress == NULL)
2744 {
2745 as_warn (_(".scl pseudo-op used outside of .def/.endef ignored."));
2746 demand_empty_rest_of_line ();
2747 return;
2748 } /* if not inside .def/.endef */
2749
2750 S_SET_STORAGE_CLASS (def_symbol_in_progress, get_absolute_expression ());
2751 demand_empty_rest_of_line ();
2752 }
2753
2754 static void
2755 obj_coff_tag (ignore)
2756 int ignore ATTRIBUTE_UNUSED;
2757 {
2758 char *symbol_name;
2759 char name_end;
2760
2761 if (def_symbol_in_progress == NULL)
2762 {
2763 as_warn (_(".tag pseudo-op used outside of .def/.endef ignored."));
2764 demand_empty_rest_of_line ();
2765 return;
2766 }
2767
2768 S_SET_NUMBER_AUXILIARY (def_symbol_in_progress, 1);
2769 symbol_name = input_line_pointer;
2770 name_end = get_symbol_end ();
2771 #ifdef tc_canonicalize_symbol_name
2772 symbol_name = tc_canonicalize_symbol_name (symbol_name);
2773 #endif
2774
2775 /* Assume that the symbol referred to by .tag is always defined.
2776 This was a bad assumption. I've added find_or_make. xoxorich. */
2777 SA_SET_SYM_TAGNDX (def_symbol_in_progress,
2778 (long) tag_find_or_make (symbol_name));
2779 if (SA_GET_SYM_TAGNDX (def_symbol_in_progress) == 0L)
2780 {
2781 as_warn (_("tag not found for .tag %s"), symbol_name);
2782 } /* not defined */
2783
2784 SF_SET_TAGGED (def_symbol_in_progress);
2785 *input_line_pointer = name_end;
2786
2787 demand_empty_rest_of_line ();
2788 }
2789
2790 static void
2791 obj_coff_type (ignore)
2792 int ignore ATTRIBUTE_UNUSED;
2793 {
2794 if (def_symbol_in_progress == NULL)
2795 {
2796 as_warn (_(".type pseudo-op used outside of .def/.endef ignored."));
2797 demand_empty_rest_of_line ();
2798 return;
2799 } /* if not inside .def/.endef */
2800
2801 S_SET_DATA_TYPE (def_symbol_in_progress, get_absolute_expression ());
2802
2803 if (ISFCN (S_GET_DATA_TYPE (def_symbol_in_progress)) &&
2804 S_GET_STORAGE_CLASS (def_symbol_in_progress) != C_TPDEF)
2805 {
2806 SF_SET_FUNCTION (def_symbol_in_progress);
2807 } /* is a function */
2808
2809 demand_empty_rest_of_line ();
2810 }
2811
2812 static void
2813 obj_coff_val (ignore)
2814 int ignore ATTRIBUTE_UNUSED;
2815 {
2816 if (def_symbol_in_progress == NULL)
2817 {
2818 as_warn (_(".val pseudo-op used outside of .def/.endef ignored."));
2819 demand_empty_rest_of_line ();
2820 return;
2821 } /* if not inside .def/.endef */
2822
2823 if (is_name_beginner (*input_line_pointer))
2824 {
2825 char *symbol_name = input_line_pointer;
2826 char name_end = get_symbol_end ();
2827
2828 #ifdef tc_canonicalize_symbol_name
2829 symbol_name = tc_canonicalize_symbol_name (symbol_name);
2830 #endif
2831
2832 if (!strcmp (symbol_name, "."))
2833 {
2834 def_symbol_in_progress->sy_frag = frag_now;
2835 S_SET_VALUE (def_symbol_in_progress, (valueT) frag_now_fix ());
2836 /* If the .val is != from the .def (e.g. statics) */
2837 }
2838 else if (strcmp (S_GET_NAME (def_symbol_in_progress), symbol_name))
2839 {
2840 def_symbol_in_progress->sy_value.X_op = O_symbol;
2841 def_symbol_in_progress->sy_value.X_add_symbol =
2842 symbol_find_or_make (symbol_name);
2843 def_symbol_in_progress->sy_value.X_op_symbol = NULL;
2844 def_symbol_in_progress->sy_value.X_add_number = 0;
2845
2846 /* If the segment is undefined when the forward reference is
2847 resolved, then copy the segment id from the forward
2848 symbol. */
2849 SF_SET_GET_SEGMENT (def_symbol_in_progress);
2850
2851 /* FIXME: gcc can generate address expressions here in
2852 unusual cases (search for "obscure" in sdbout.c). We
2853 just ignore the offset here, thus generating incorrect
2854 debugging information. We ignore the rest of the line
2855 just below. */
2856 }
2857 /* Otherwise, it is the name of a non debug symbol and
2858 its value will be calculated later. */
2859 *input_line_pointer = name_end;
2860
2861 /* FIXME: this is to avoid an error message in the
2862 FIXME case mentioned just above. */
2863 while (! is_end_of_line[(unsigned char) *input_line_pointer])
2864 ++input_line_pointer;
2865 }
2866 else
2867 {
2868 S_SET_VALUE (def_symbol_in_progress,
2869 (valueT) get_absolute_expression ());
2870 } /* if symbol based */
2871
2872 demand_empty_rest_of_line ();
2873 }
2874
2875 #ifdef TE_PE
2876
2877 /* Handle the .linkonce pseudo-op. This is parsed by s_linkonce in
2878 read.c, which then calls this object file format specific routine. */
2879
2880 void
2881 obj_coff_pe_handle_link_once (type)
2882 enum linkonce_type type;
2883 {
2884 seg_info (now_seg)->scnhdr.s_flags |= IMAGE_SCN_LNK_COMDAT;
2885
2886 /* We store the type in the seg_info structure, and use it to set up
2887 the auxiliary entry for the section symbol in c_section_symbol. */
2888 seg_info (now_seg)->linkonce = type;
2889 }
2890
2891 #endif /* TE_PE */
2892
2893 void
2894 coff_obj_read_begin_hook ()
2895 {
2896 /* These had better be the same. Usually 18 bytes. */
2897 #ifndef BFD_HEADERS
2898 know (sizeof (SYMENT) == sizeof (AUXENT));
2899 know (SYMESZ == AUXESZ);
2900 #endif
2901 tag_init ();
2902 }
2903
2904 /* This function runs through the symbol table and puts all the
2905 externals onto another chain */
2906
2907 /* The chain of globals. */
2908 symbolS *symbol_globalP;
2909 symbolS *symbol_global_lastP;
2910
2911 /* The chain of externals */
2912 symbolS *symbol_externP;
2913 symbolS *symbol_extern_lastP;
2914
2915 stack *block_stack;
2916 symbolS *last_functionP;
2917 static symbolS *last_bfP;
2918 symbolS *last_tagP;
2919
2920 static unsigned int
2921 yank_symbols ()
2922 {
2923 symbolS *symbolP;
2924 unsigned int symbol_number = 0;
2925 unsigned int last_file_symno = 0;
2926
2927 struct filename_list *filename_list_scan = filename_list_head;
2928
2929 for (symbolP = symbol_rootP;
2930 symbolP;
2931 symbolP = symbolP ? symbol_next (symbolP) : symbol_rootP)
2932 {
2933 if (symbolP->sy_mri_common)
2934 {
2935 if (S_GET_STORAGE_CLASS (symbolP) == C_EXT
2936 #ifdef TE_PE
2937 || S_GET_STORAGE_CLASS (symbolP) == C_NT_WEAK
2938 #endif
2939 || S_GET_STORAGE_CLASS (symbolP) == C_WEAKEXT)
2940 as_bad (_("%s: global symbols not supported in common sections"),
2941 S_GET_NAME (symbolP));
2942 symbol_remove (symbolP, &symbol_rootP, &symbol_lastP);
2943 continue;
2944 }
2945
2946 if (!SF_GET_DEBUG (symbolP))
2947 {
2948 /* Debug symbols do not need all this rubbish */
2949 symbolS *real_symbolP;
2950
2951 /* L* and C_EFCN symbols never merge. */
2952 if (!SF_GET_LOCAL (symbolP)
2953 && !SF_GET_STATICS (symbolP)
2954 && S_GET_STORAGE_CLASS (symbolP) != C_LABEL
2955 && symbolP->sy_value.X_op == O_constant
2956 && (real_symbolP = symbol_find_base (S_GET_NAME (symbolP), DO_NOT_STRIP))
2957 && real_symbolP != symbolP)
2958 {
2959 /* FIXME-SOON: where do dups come from?
2960 Maybe tag references before definitions? xoxorich. */
2961 /* Move the debug data from the debug symbol to the
2962 real symbol. Do NOT do the oposite (i.e. move from
2963 real symbol to debug symbol and remove real symbol from the
2964 list.) Because some pointers refer to the real symbol
2965 whereas no pointers refer to the debug symbol. */
2966 c_symbol_merge (symbolP, real_symbolP);
2967 /* Replace the current symbol by the real one */
2968 /* The symbols will never be the last or the first
2969 because : 1st symbol is .file and 3 last symbols are
2970 .text, .data, .bss */
2971 symbol_remove (real_symbolP, &symbol_rootP, &symbol_lastP);
2972 symbol_insert (real_symbolP, symbolP, &symbol_rootP, &symbol_lastP);
2973 symbol_remove (symbolP, &symbol_rootP, &symbol_lastP);
2974 symbolP = real_symbolP;
2975 } /* if not local but dup'd */
2976
2977 if (flag_readonly_data_in_text && (S_GET_SEGMENT (symbolP) == SEG_E1))
2978 {
2979 S_SET_SEGMENT (symbolP, SEG_E0);
2980 } /* push data into text */
2981
2982 resolve_symbol_value (symbolP);
2983
2984 if (S_GET_STORAGE_CLASS (symbolP) == C_NULL)
2985 {
2986 if (!S_IS_DEFINED (symbolP) && !SF_GET_LOCAL (symbolP))
2987 {
2988 S_SET_EXTERNAL (symbolP);
2989 }
2990 else if (S_GET_SEGMENT (symbolP) == SEG_E0)
2991 {
2992 S_SET_STORAGE_CLASS (symbolP, C_LABEL);
2993 }
2994 else
2995 {
2996 S_SET_STORAGE_CLASS (symbolP, C_STAT);
2997 }
2998 }
2999
3000 /* Mainly to speed up if not -g */
3001 if (SF_GET_PROCESS (symbolP))
3002 {
3003 /* Handle the nested blocks auxiliary info. */
3004 if (S_GET_STORAGE_CLASS (symbolP) == C_BLOCK)
3005 {
3006 if (!strcmp (S_GET_NAME (symbolP), ".bb"))
3007 stack_push (block_stack, (char *) &symbolP);
3008 else
3009 { /* .eb */
3010 register symbolS *begin_symbolP;
3011 begin_symbolP = *(symbolS **) stack_pop (block_stack);
3012 if (begin_symbolP == (symbolS *) 0)
3013 as_warn (_("mismatched .eb"));
3014 else
3015 SA_SET_SYM_ENDNDX (begin_symbolP, symbol_number + 2);
3016 }
3017 }
3018 /* If we are able to identify the type of a function, and we
3019 are out of a function (last_functionP == 0) then, the
3020 function symbol will be associated with an auxiliary
3021 entry. */
3022 if (last_functionP == (symbolS *) 0 &&
3023 SF_GET_FUNCTION (symbolP))
3024 {
3025 last_functionP = symbolP;
3026
3027 if (S_GET_NUMBER_AUXILIARY (symbolP) < 1)
3028 {
3029 S_SET_NUMBER_AUXILIARY (symbolP, 1);
3030 } /* make it at least 1 */
3031
3032 /* Clobber possible stale .dim information. */
3033 #if 0
3034 /* Iffed out by steve - this fries the lnnoptr info too */
3035 bzero (symbolP->sy_symbol.ost_auxent[0].x_sym.x_fcnary.x_ary.x_dimen,
3036 sizeof (symbolP->sy_symbol.ost_auxent[0].x_sym.x_fcnary.x_ary.x_dimen));
3037 #endif
3038 }
3039 if (S_GET_STORAGE_CLASS (symbolP) == C_FCN)
3040 {
3041 if (strcmp (S_GET_NAME (symbolP), ".bf") == 0)
3042 {
3043 if (last_bfP != NULL)
3044 SA_SET_SYM_ENDNDX (last_bfP, symbol_number);
3045 last_bfP = symbolP;
3046 }
3047 }
3048 else if (S_GET_STORAGE_CLASS (symbolP) == C_EFCN)
3049 {
3050 /* I don't even know if this is needed for sdb. But
3051 the standard assembler generates it, so... */
3052 if (last_functionP == (symbolS *) 0)
3053 as_fatal (_("C_EFCN symbol out of scope"));
3054 SA_SET_SYM_FSIZE (last_functionP,
3055 (long) (S_GET_VALUE (symbolP) -
3056 S_GET_VALUE (last_functionP)));
3057 SA_SET_SYM_ENDNDX (last_functionP, symbol_number);
3058 last_functionP = (symbolS *) 0;
3059 }
3060 }
3061 }
3062 else if (SF_GET_TAG (symbolP))
3063 {
3064 /* First descriptor of a structure must point to
3065 the first slot after the structure description. */
3066 last_tagP = symbolP;
3067
3068 }
3069 else if (S_GET_STORAGE_CLASS (symbolP) == C_EOS)
3070 {
3071 /* +2 take in account the current symbol */
3072 SA_SET_SYM_ENDNDX (last_tagP, symbol_number + 2);
3073 }
3074 else if (S_GET_STORAGE_CLASS (symbolP) == C_FILE)
3075 {
3076 /* If the filename was too long to fit in the
3077 auxent, put it in the string table */
3078 if (SA_GET_FILE_FNAME_ZEROS (symbolP) == 0
3079 && SA_GET_FILE_FNAME_OFFSET (symbolP) != 0)
3080 {
3081 SA_SET_FILE_FNAME_OFFSET (symbolP, string_byte_count);
3082 string_byte_count += strlen (filename_list_scan->filename) + 1;
3083 filename_list_scan = filename_list_scan->next;
3084 }
3085 if (S_GET_VALUE (symbolP))
3086 {
3087 S_SET_VALUE (symbolP, last_file_symno);
3088 last_file_symno = symbol_number;
3089 } /* no one points at the first .file symbol */
3090 } /* if debug or tag or eos or file */
3091
3092 #ifdef tc_frob_coff_symbol
3093 tc_frob_coff_symbol (symbolP);
3094 #endif
3095
3096 /* We must put the external symbols apart. The loader
3097 does not bomb if we do not. But the references in
3098 the endndx field for a .bb symbol are not corrected
3099 if an external symbol is removed between .bb and .be.
3100 I.e in the following case :
3101 [20] .bb endndx = 22
3102 [21] foo external
3103 [22] .be
3104 ld will move the symbol 21 to the end of the list but
3105 endndx will still be 22 instead of 21. */
3106
3107 if (SF_GET_LOCAL (symbolP))
3108 {
3109 /* remove C_EFCN and LOCAL (L...) symbols */
3110 /* next pointer remains valid */
3111 symbol_remove (symbolP, &symbol_rootP, &symbol_lastP);
3112
3113 }
3114 else if (symbolP->sy_value.X_op == O_symbol
3115 && (! S_IS_DEFINED (symbolP) || S_IS_COMMON (symbolP)))
3116 {
3117 /* Skip symbols which were equated to undefined or common
3118 symbols. */
3119 symbol_remove (symbolP, &symbol_rootP, &symbol_lastP);
3120 }
3121 else if (!S_IS_DEFINED (symbolP)
3122 && !S_IS_DEBUG (symbolP)
3123 && !SF_GET_STATICS (symbolP)
3124 && (S_GET_STORAGE_CLASS (symbolP) == C_EXT
3125 #ifdef TE_PE
3126 || S_GET_STORAGE_CLASS (symbolP) == C_NT_WEAK
3127 #endif
3128 || S_GET_STORAGE_CLASS (symbolP) == C_WEAKEXT))
3129 {
3130 /* if external, Remove from the list */
3131 symbolS *hold = symbol_previous (symbolP);
3132
3133 symbol_remove (symbolP, &symbol_rootP, &symbol_lastP);
3134 symbol_clear_list_pointers (symbolP);
3135 symbol_append (symbolP, symbol_extern_lastP, &symbol_externP, &symbol_extern_lastP);
3136 symbolP = hold;
3137 }
3138 else if (! S_IS_DEBUG (symbolP)
3139 && ! SF_GET_STATICS (symbolP)
3140 && ! SF_GET_FUNCTION (symbolP)
3141 && (S_GET_STORAGE_CLASS (symbolP) == C_EXT
3142 #ifdef TE_PE
3143 || S_GET_STORAGE_CLASS (symbolP) == C_NT_WEAK
3144 #endif
3145 || S_GET_STORAGE_CLASS (symbolP) == C_NT_WEAK))
3146 {
3147 symbolS *hold = symbol_previous (symbolP);
3148
3149 /* The O'Reilly COFF book says that defined global symbols
3150 come at the end of the symbol table, just before
3151 undefined global symbols. */
3152
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);
3157 symbolP = hold;
3158 }
3159 else
3160 {
3161 if (SF_GET_STRING (symbolP))
3162 {
3163 symbolP->sy_name_offset = string_byte_count;
3164 string_byte_count += strlen (S_GET_NAME (symbolP)) + 1;
3165 }
3166 else
3167 {
3168 symbolP->sy_name_offset = 0;
3169 } /* fix "long" names */
3170
3171 symbolP->sy_number = symbol_number;
3172 symbol_number += 1 + S_GET_NUMBER_AUXILIARY (symbolP);
3173 } /* if local symbol */
3174 } /* traverse the symbol list */
3175 return symbol_number;
3176
3177 }
3178
3179 static unsigned int
3180 glue_symbols (head, tail)
3181 symbolS **head;
3182 symbolS **tail;
3183 {
3184 unsigned int symbol_number = 0;
3185
3186 while (*head != NULL)
3187 {
3188 symbolS *tmp = *head;
3189
3190 /* append */
3191 symbol_remove (tmp, head, tail);
3192 symbol_append (tmp, symbol_lastP, &symbol_rootP, &symbol_lastP);
3193
3194 /* and process */
3195 if (SF_GET_STRING (tmp))
3196 {
3197 tmp->sy_name_offset = string_byte_count;
3198 string_byte_count += strlen (S_GET_NAME (tmp)) + 1;
3199 }
3200 else
3201 {
3202 tmp->sy_name_offset = 0;
3203 } /* fix "long" names */
3204
3205 tmp->sy_number = symbol_number;
3206 symbol_number += 1 + S_GET_NUMBER_AUXILIARY (tmp);
3207 } /* append the entire extern chain */
3208
3209 return symbol_number;
3210 }
3211
3212 static unsigned int
3213 tie_tags ()
3214 {
3215 unsigned int symbol_number = 0;
3216 symbolS *symbolP;
3217
3218 for (symbolP = symbol_rootP; symbolP; symbolP = symbol_next (symbolP))
3219 {
3220 symbolP->sy_number = symbol_number;
3221
3222 if (SF_GET_TAGGED (symbolP))
3223 {
3224 SA_SET_SYM_TAGNDX
3225 (symbolP,
3226 ((symbolS *) SA_GET_SYM_TAGNDX (symbolP))->sy_number);
3227 }
3228
3229 symbol_number += 1 + S_GET_NUMBER_AUXILIARY (symbolP);
3230 }
3231
3232 return symbol_number;
3233 }
3234
3235 static void
3236 crawl_symbols (h, abfd)
3237 object_headers *h;
3238 bfd *abfd ATTRIBUTE_UNUSED;
3239 {
3240 unsigned int i;
3241
3242 /* Initialize the stack used to keep track of the matching .bb .be */
3243
3244 block_stack = stack_init (512, sizeof (symbolS *));
3245
3246 /* The symbol list should be ordered according to the following sequence
3247 * order :
3248 * . .file symbol
3249 * . debug entries for functions
3250 * . fake symbols for the sections, including .text .data and .bss
3251 * . defined symbols
3252 * . undefined symbols
3253 * But this is not mandatory. The only important point is to put the
3254 * undefined symbols at the end of the list.
3255 */
3256
3257 /* Is there a .file symbol ? If not insert one at the beginning. */
3258 if (symbol_rootP == NULL
3259 || S_GET_STORAGE_CLASS (symbol_rootP) != C_FILE)
3260 {
3261 c_dot_file_symbol ("fake");
3262 }
3263
3264 /*
3265 * Build up static symbols for the sections, they are filled in later
3266 */
3267
3268 for (i = SEG_E0; i < SEG_LAST; i++)
3269 if (segment_info[i].scnhdr.s_name[0])
3270 segment_info[i].dot = c_section_symbol (segment_info[i].name,
3271 i - SEG_E0 + 1);
3272
3273 /* Take all the externals out and put them into another chain */
3274 H_SET_SYMBOL_TABLE_SIZE (h, yank_symbols ());
3275 /* Take the externals and glue them onto the end.*/
3276 H_SET_SYMBOL_TABLE_SIZE (h,
3277 (H_GET_SYMBOL_COUNT (h)
3278 + glue_symbols (&symbol_globalP,
3279 &symbol_global_lastP)
3280 + glue_symbols (&symbol_externP,
3281 &symbol_extern_lastP)));
3282
3283 H_SET_SYMBOL_TABLE_SIZE (h, tie_tags ());
3284 know (symbol_globalP == NULL);
3285 know (symbol_global_lastP == NULL);
3286 know (symbol_externP == NULL);
3287 know (symbol_extern_lastP == NULL);
3288 }
3289
3290 /*
3291 * Find strings by crawling along symbol table chain.
3292 */
3293
3294 void
3295 w_strings (where)
3296 char *where;
3297 {
3298 symbolS *symbolP;
3299 struct filename_list *filename_list_scan = filename_list_head;
3300
3301 /* Gotta do md_ byte-ordering stuff for string_byte_count first - KWK */
3302 md_number_to_chars (where, (valueT) string_byte_count, 4);
3303 where += 4;
3304
3305 #ifdef COFF_LONG_SECTION_NAMES
3306 /* Support long section names as found in PE. This code must
3307 coordinate with that in coff_header_append and write_object_file. */
3308 {
3309 unsigned int i;
3310
3311 for (i = SEG_E0; i < SEG_LAST; i++)
3312 {
3313 if (segment_info[i].scnhdr.s_name[0]
3314 && strlen (segment_info[i].name) > SCNNMLEN)
3315 {
3316 unsigned int size;
3317
3318 size = strlen (segment_info[i].name) + 1;
3319 memcpy (where, segment_info[i].name, size);
3320 where += size;
3321 }
3322 }
3323 }
3324 #endif /* COFF_LONG_SECTION_NAMES */
3325
3326 for (symbolP = symbol_rootP;
3327 symbolP;
3328 symbolP = symbol_next (symbolP))
3329 {
3330 unsigned int size;
3331
3332 if (SF_GET_STRING (symbolP))
3333 {
3334 size = strlen (S_GET_NAME (symbolP)) + 1;
3335 memcpy (where, S_GET_NAME (symbolP), size);
3336 where += size;
3337 }
3338 if (S_GET_STORAGE_CLASS (symbolP) == C_FILE
3339 && SA_GET_FILE_FNAME_ZEROS (symbolP) == 0
3340 && SA_GET_FILE_FNAME_OFFSET (symbolP) != 0)
3341 {
3342 size = strlen (filename_list_scan->filename) + 1;
3343 memcpy (where, filename_list_scan->filename, size);
3344 filename_list_scan = filename_list_scan ->next;
3345 where += size;
3346 }
3347 }
3348 }
3349
3350 static void
3351 do_linenos_for (abfd, h, file_cursor)
3352 bfd * abfd;
3353 object_headers * h;
3354 unsigned long *file_cursor;
3355 {
3356 unsigned int idx;
3357 unsigned long start = *file_cursor;
3358
3359 for (idx = SEG_E0; idx < SEG_LAST; idx++)
3360 {
3361 segment_info_type *s = segment_info + idx;
3362
3363 if (s->scnhdr.s_nlnno != 0)
3364 {
3365 struct lineno_list *line_ptr;
3366
3367 struct external_lineno *buffer =
3368 (struct external_lineno *) xmalloc (s->scnhdr.s_nlnno * LINESZ);
3369
3370 struct external_lineno *dst = buffer;
3371
3372 /* Run through the table we've built and turn it into its external
3373 form, take this chance to remove duplicates */
3374
3375 for (line_ptr = s->lineno_list_head;
3376 line_ptr != (struct lineno_list *) NULL;
3377 line_ptr = line_ptr->next)
3378 {
3379 if (line_ptr->line.l_lnno == 0)
3380 {
3381 /* Turn a pointer to a symbol into the symbols' index,
3382 provided that it has been initialised. */
3383 if (line_ptr->line.l_addr.l_symndx)
3384 line_ptr->line.l_addr.l_symndx =
3385 ((symbolS *) line_ptr->line.l_addr.l_symndx)->sy_number;
3386 }
3387 else
3388 {
3389 line_ptr->line.l_addr.l_paddr += ((struct frag *) (line_ptr->frag))->fr_address;
3390 }
3391
3392 (void) bfd_coff_swap_lineno_out (abfd, &(line_ptr->line), dst);
3393 dst++;
3394
3395 }
3396
3397 s->scnhdr.s_lnnoptr = *file_cursor;
3398
3399 bfd_bwrite (buffer, (bfd_size_type) s->scnhdr.s_nlnno * LINESZ, abfd);
3400 free (buffer);
3401
3402 *file_cursor += s->scnhdr.s_nlnno * LINESZ;
3403 }
3404 }
3405 H_SET_LINENO_SIZE (h, *file_cursor - start);
3406 }
3407
3408 /* Now we run through the list of frag chains in a segment and
3409 make all the subsegment frags appear at the end of the
3410 list, as if the seg 0 was extra long */
3411
3412 static void
3413 remove_subsegs ()
3414 {
3415 unsigned int i;
3416
3417 for (i = SEG_E0; i < SEG_UNKNOWN; i++)
3418 {
3419 frchainS *head = segment_info[i].frchainP;
3420 fragS dummy;
3421 fragS *prev_frag = &dummy;
3422
3423 while (head && head->frch_seg == i)
3424 {
3425 prev_frag->fr_next = head->frch_root;
3426 prev_frag = head->frch_last;
3427 head = head->frch_next;
3428 }
3429 prev_frag->fr_next = 0;
3430 }
3431 }
3432
3433 unsigned long machine;
3434 int coff_flags;
3435 extern void
3436 write_object_file ()
3437 {
3438 int i;
3439 const char *name;
3440 struct frchain *frchain_ptr;
3441
3442 object_headers headers;
3443 unsigned long file_cursor;
3444 bfd *abfd;
3445 unsigned int addr;
3446 abfd = bfd_openw (out_file_name, TARGET_FORMAT);
3447
3448 if (abfd == 0)
3449 {
3450 as_perror (_("FATAL: Can't create %s"), out_file_name);
3451 exit (EXIT_FAILURE);
3452 }
3453 bfd_set_format (abfd, bfd_object);
3454 bfd_set_arch_mach (abfd, BFD_ARCH, machine);
3455
3456 string_byte_count = 4;
3457
3458 for (frchain_ptr = frchain_root;
3459 frchain_ptr != (struct frchain *) NULL;
3460 frchain_ptr = frchain_ptr->frch_next)
3461 {
3462 /* Run through all the sub-segments and align them up. Also
3463 close any open frags. We tack a .fill onto the end of the
3464 frag chain so that any .align's size can be worked by looking
3465 at the next frag. */
3466
3467 subseg_set (frchain_ptr->frch_seg, frchain_ptr->frch_subseg);
3468
3469 #ifndef SUB_SEGMENT_ALIGN
3470 #define SUB_SEGMENT_ALIGN(SEG) 1
3471 #endif
3472 #ifdef md_do_align
3473 md_do_align (SUB_SEGMENT_ALIGN (now_seg), (char *) NULL, 0, 0,
3474 alignment_done);
3475 #endif
3476 if (subseg_text_p (now_seg))
3477 frag_align_code (SUB_SEGMENT_ALIGN (now_seg), 0);
3478 else
3479 frag_align (SUB_SEGMENT_ALIGN (now_seg), 0, 0);
3480
3481 #ifdef md_do_align
3482 alignment_done:
3483 #endif
3484
3485 frag_wane (frag_now);
3486 frag_now->fr_fix = 0;
3487 know (frag_now->fr_next == NULL);
3488 }
3489
3490 remove_subsegs ();
3491
3492 for (i = SEG_E0; i < SEG_UNKNOWN; i++)
3493 {
3494 relax_segment (segment_info[i].frchainP->frch_root, i);
3495 }
3496
3497 /* Relaxation has completed. Freeze all syms. */
3498 finalize_syms = 1;
3499
3500 H_SET_NUMBER_OF_SECTIONS (&headers, 0);
3501
3502 /* Find out how big the sections are, and set the addresses. */
3503 addr = 0;
3504 for (i = SEG_E0; i < SEG_UNKNOWN; i++)
3505 {
3506 long size;
3507
3508 segment_info[i].scnhdr.s_paddr = addr;
3509 segment_info[i].scnhdr.s_vaddr = addr;
3510
3511 if (segment_info[i].scnhdr.s_name[0])
3512 {
3513 H_SET_NUMBER_OF_SECTIONS (&headers,
3514 H_GET_NUMBER_OF_SECTIONS (&headers) + 1);
3515
3516 #ifdef COFF_LONG_SECTION_NAMES
3517 /* Support long section names as found in PE. This code
3518 must coordinate with that in coff_header_append and
3519 w_strings. */
3520 {
3521 unsigned int len;
3522
3523 len = strlen (segment_info[i].name);
3524 if (len > SCNNMLEN)
3525 string_byte_count += len + 1;
3526 }
3527 #endif /* COFF_LONG_SECTION_NAMES */
3528 }
3529
3530 size = size_section (abfd, (unsigned int) i);
3531 addr += size;
3532
3533 /* I think the section alignment is only used on the i960; the
3534 i960 needs it, and it should do no harm on other targets. */
3535 #ifdef ALIGNMENT_IN_S_FLAGS
3536 segment_info[i].scnhdr.s_flags |= (section_alignment[i] & 0xF) << 8;
3537 #else
3538 segment_info[i].scnhdr.s_align = 1 << section_alignment[i];
3539 #endif
3540
3541 if (i == SEG_E0)
3542 H_SET_TEXT_SIZE (&headers, size);
3543 else if (i == SEG_E1)
3544 H_SET_DATA_SIZE (&headers, size);
3545 else if (i == SEG_E2)
3546 H_SET_BSS_SIZE (&headers, size);
3547 }
3548
3549 /* Turn the gas native symbol table shape into a coff symbol table */
3550 crawl_symbols (&headers, abfd);
3551
3552 if (string_byte_count == 4)
3553 string_byte_count = 0;
3554
3555 H_SET_STRING_SIZE (&headers, string_byte_count);
3556
3557 #ifdef tc_frob_file
3558 tc_frob_file ();
3559 #endif
3560
3561 for (i = SEG_E0; i < SEG_UNKNOWN; i++)
3562 {
3563 fixup_mdeps (segment_info[i].frchainP->frch_root, &headers, i);
3564 fixup_segment (&segment_info[i], i);
3565 }
3566
3567 /* Look for ".stab" segments and fill in their initial symbols
3568 correctly. */
3569 for (i = SEG_E0; i < SEG_UNKNOWN; i++)
3570 {
3571 name = segment_info[i].name;
3572
3573 if (name != NULL
3574 && strncmp (".stab", name, 5) == 0
3575 && strncmp (".stabstr", name, 8) != 0)
3576 adjust_stab_section (abfd, i);
3577 }
3578
3579 file_cursor = H_GET_TEXT_FILE_OFFSET (&headers);
3580
3581 bfd_seek (abfd, (file_ptr) file_cursor, 0);
3582
3583 /* Plant the data */
3584
3585 fill_section (abfd, &headers, &file_cursor);
3586
3587 do_relocs_for (abfd, &headers, &file_cursor);
3588
3589 do_linenos_for (abfd, &headers, &file_cursor);
3590
3591 H_SET_FILE_MAGIC_NUMBER (&headers, COFF_MAGIC);
3592 #ifndef OBJ_COFF_OMIT_TIMESTAMP
3593 H_SET_TIME_STAMP (&headers, (long)time((time_t *)0));
3594 #else
3595 H_SET_TIME_STAMP (&headers, 0);
3596 #endif
3597 #ifdef TC_COFF_SET_MACHINE
3598 TC_COFF_SET_MACHINE (&headers);
3599 #endif
3600
3601 #ifndef COFF_FLAGS
3602 #define COFF_FLAGS 0
3603 #endif
3604
3605 #ifdef KEEP_RELOC_INFO
3606 H_SET_FLAGS (&headers, ((H_GET_LINENO_SIZE(&headers) ? 0 : F_LNNO) |
3607 COFF_FLAGS | coff_flags));
3608 #else
3609 H_SET_FLAGS (&headers, ((H_GET_LINENO_SIZE(&headers) ? 0 : F_LNNO) |
3610 (H_GET_RELOCATION_SIZE(&headers) ? 0 : F_RELFLG) |
3611 COFF_FLAGS | coff_flags));
3612 #endif
3613
3614 {
3615 unsigned int symtable_size = H_GET_SYMBOL_TABLE_SIZE (&headers);
3616 char *buffer1 = xmalloc (symtable_size + string_byte_count + 1);
3617
3618 H_SET_SYMBOL_TABLE_POINTER (&headers, bfd_tell (abfd));
3619 w_symbols (abfd, buffer1, symbol_rootP);
3620 if (string_byte_count > 0)
3621 w_strings (buffer1 + symtable_size);
3622 bfd_bwrite (buffer1, (bfd_size_type) symtable_size + string_byte_count,
3623 abfd);
3624 free (buffer1);
3625 }
3626
3627 coff_header_append (abfd, &headers);
3628 #if 0
3629 /* Recent changes to write need this, but where it should
3630 go is up to Ken.. */
3631 if (bfd_close_all_done (abfd) == false)
3632 as_fatal (_("Can't close %s: %s"), out_file_name,
3633 bfd_errmsg (bfd_get_error ()));
3634 #else
3635 {
3636 extern bfd *stdoutput;
3637 stdoutput = abfd;
3638 }
3639 #endif
3640
3641 }
3642
3643 /* Add a new segment. This is called from subseg_new via the
3644 obj_new_segment macro. */
3645
3646 segT
3647 obj_coff_add_segment (name)
3648 const char *name;
3649 {
3650 unsigned int i;
3651
3652 #ifndef COFF_LONG_SECTION_NAMES
3653 char buf[SCNNMLEN + 1];
3654
3655 strncpy (buf, name, SCNNMLEN);
3656 buf[SCNNMLEN] = '\0';
3657 name = buf;
3658 #endif
3659
3660 for (i = SEG_E0; i < SEG_LAST && segment_info[i].scnhdr.s_name[0]; i++)
3661 if (strcmp (name, segment_info[i].name) == 0)
3662 return (segT) i;
3663
3664 if (i == SEG_LAST)
3665 {
3666 as_bad (_("Too many new sections; can't add \"%s\""), name);
3667 return now_seg;
3668 }
3669
3670 /* Add a new section. */
3671 strncpy (segment_info[i].scnhdr.s_name, name,
3672 sizeof (segment_info[i].scnhdr.s_name));
3673 segment_info[i].scnhdr.s_flags = STYP_REG;
3674 segment_info[i].name = xstrdup (name);
3675
3676 return (segT) i;
3677 }
3678
3679 /*
3680 * implement the .section pseudo op:
3681 * .section name {, "flags"}
3682 * ^ ^
3683 * | +--- optional flags: 'b' for bss
3684 * | 'i' for info
3685 * +-- section name 'l' for lib
3686 * 'n' for noload
3687 * 'o' for over
3688 * 'w' for data
3689 * 'd' (apparently m88k for data)
3690 * 'x' for text
3691 * 'r' for read-only data
3692 * But if the argument is not a quoted string, treat it as a
3693 * subsegment number.
3694 */
3695
3696 void
3697 obj_coff_section (ignore)
3698 int ignore ATTRIBUTE_UNUSED;
3699 {
3700 /* Strip out the section name */
3701 char *section_name, *name;
3702 char c;
3703 unsigned int exp;
3704 long flags;
3705
3706 if (flag_mri)
3707 {
3708 char type;
3709
3710 s_mri_sect (&type);
3711 flags = 0;
3712 if (type == 'C')
3713 flags = STYP_TEXT;
3714 else if (type == 'D')
3715 flags = STYP_DATA;
3716 segment_info[now_seg].scnhdr.s_flags |= flags;
3717
3718 return;
3719 }
3720
3721 section_name = input_line_pointer;
3722 c = get_symbol_end ();
3723
3724 name = xmalloc (input_line_pointer - section_name + 1);
3725 strcpy (name, section_name);
3726
3727 *input_line_pointer = c;
3728
3729 exp = 0;
3730 flags = 0;
3731
3732 SKIP_WHITESPACE ();
3733 if (*input_line_pointer == ',')
3734 {
3735 ++input_line_pointer;
3736 SKIP_WHITESPACE ();
3737
3738 if (*input_line_pointer != '"')
3739 exp = get_absolute_expression ();
3740 else
3741 {
3742 ++input_line_pointer;
3743 while (*input_line_pointer != '"'
3744 && ! is_end_of_line[(unsigned char) *input_line_pointer])
3745 {
3746 switch (*input_line_pointer)
3747 {
3748 case 'b': flags |= STYP_BSS; break;
3749 case 'i': flags |= STYP_INFO; break;
3750 case 'l': flags |= STYP_LIB; break;
3751 case 'n': flags |= STYP_NOLOAD; break;
3752 case 'o': flags |= STYP_OVER; break;
3753 case 'd':
3754 case 'w': flags |= STYP_DATA; break;
3755 case 'x': flags |= STYP_TEXT; break;
3756 case 'r': flags |= STYP_LIT; break;
3757 default:
3758 as_warn(_("unknown section attribute '%c'"),
3759 *input_line_pointer);
3760 break;
3761 }
3762 ++input_line_pointer;
3763 }
3764 if (*input_line_pointer == '"')
3765 ++input_line_pointer;
3766 }
3767 }
3768
3769 subseg_new (name, (subsegT) exp);
3770
3771 segment_info[now_seg].scnhdr.s_flags |= flags;
3772
3773 demand_empty_rest_of_line ();
3774 }
3775
3776 static void
3777 obj_coff_text (ignore)
3778 int ignore ATTRIBUTE_UNUSED;
3779 {
3780 subseg_new (".text", get_absolute_expression ());
3781 }
3782
3783 static void
3784 obj_coff_data (ignore)
3785 int ignore ATTRIBUTE_UNUSED;
3786 {
3787 if (flag_readonly_data_in_text)
3788 subseg_new (".text", get_absolute_expression () + 1000);
3789 else
3790 subseg_new (".data", get_absolute_expression ());
3791 }
3792
3793 static void
3794 obj_coff_ident (ignore)
3795 int ignore ATTRIBUTE_UNUSED;
3796 {
3797 segT current_seg = now_seg; /* save current seg */
3798 subsegT current_subseg = now_subseg;
3799 subseg_new (".comment", 0); /* .comment seg */
3800 stringer (1); /* read string */
3801 subseg_set (current_seg, current_subseg); /* restore current seg */
3802 }
3803
3804 void
3805 c_symbol_merge (debug, normal)
3806 symbolS *debug;
3807 symbolS *normal;
3808 {
3809 S_SET_DATA_TYPE (normal, S_GET_DATA_TYPE (debug));
3810 S_SET_STORAGE_CLASS (normal, S_GET_STORAGE_CLASS (debug));
3811
3812 if (S_GET_NUMBER_AUXILIARY (debug) > S_GET_NUMBER_AUXILIARY (normal))
3813 {
3814 S_SET_NUMBER_AUXILIARY (normal, S_GET_NUMBER_AUXILIARY (debug));
3815 } /* take the most we have */
3816
3817 if (S_GET_NUMBER_AUXILIARY (debug) > 0)
3818 {
3819 memcpy ((char *) &normal->sy_symbol.ost_auxent[0],
3820 (char *) &debug->sy_symbol.ost_auxent[0],
3821 (unsigned int) (S_GET_NUMBER_AUXILIARY (debug) * AUXESZ));
3822 } /* Move all the auxiliary information */
3823
3824 /* Move the debug flags. */
3825 SF_SET_DEBUG_FIELD (normal, SF_GET_DEBUG_FIELD (debug));
3826 } /* c_symbol_merge() */
3827
3828 static int
3829 c_line_new (symbol, paddr, line_number, frag)
3830 symbolS * symbol;
3831 long paddr;
3832 int line_number;
3833 fragS * frag;
3834 {
3835 struct lineno_list *new_line =
3836 (struct lineno_list *) xmalloc (sizeof (struct lineno_list));
3837
3838 segment_info_type *s = segment_info + now_seg;
3839 new_line->line.l_lnno = line_number;
3840
3841 if (line_number == 0)
3842 {
3843 last_line_symbol = symbol;
3844 new_line->line.l_addr.l_symndx = (long) symbol;
3845 }
3846 else
3847 {
3848 new_line->line.l_addr.l_paddr = paddr;
3849 }
3850
3851 new_line->frag = (char *) frag;
3852 new_line->next = (struct lineno_list *) NULL;
3853
3854 if (s->lineno_list_head == (struct lineno_list *) NULL)
3855 {
3856 s->lineno_list_head = new_line;
3857 }
3858 else
3859 {
3860 s->lineno_list_tail->next = new_line;
3861 }
3862 s->lineno_list_tail = new_line;
3863 return LINESZ * s->scnhdr.s_nlnno++;
3864 }
3865
3866 void
3867 c_dot_file_symbol (filename)
3868 char *filename;
3869 {
3870 symbolS *symbolP;
3871
3872 symbolP = symbol_new (".file",
3873 SEG_DEBUG,
3874 0,
3875 &zero_address_frag);
3876
3877 S_SET_STORAGE_CLASS (symbolP, C_FILE);
3878 S_SET_NUMBER_AUXILIARY (symbolP, 1);
3879
3880 if (strlen (filename) > FILNMLEN)
3881 {
3882 /* Filename is too long to fit into an auxent,
3883 we stick it into the string table instead. We keep
3884 a linked list of the filenames we find so we can emit
3885 them later.*/
3886 struct filename_list *f = ((struct filename_list *)
3887 xmalloc (sizeof (struct filename_list)));
3888
3889 f->filename = filename;
3890 f->next = 0;
3891
3892 SA_SET_FILE_FNAME_ZEROS (symbolP, 0);
3893 SA_SET_FILE_FNAME_OFFSET (symbolP, 1);
3894
3895 if (filename_list_tail)
3896 filename_list_tail->next = f;
3897 else
3898 filename_list_head = f;
3899 filename_list_tail = f;
3900 }
3901 else
3902 {
3903 SA_SET_FILE_FNAME (symbolP, filename);
3904 }
3905 #ifndef NO_LISTING
3906 {
3907 extern int listing;
3908 if (listing)
3909 {
3910 listing_source_file (filename);
3911 }
3912
3913 }
3914
3915 #endif
3916 SF_SET_DEBUG (symbolP);
3917 S_SET_VALUE (symbolP, (valueT) previous_file_symbol);
3918
3919 previous_file_symbol = symbolP;
3920
3921 /* Make sure that the symbol is first on the symbol chain */
3922 if (symbol_rootP != symbolP)
3923 {
3924 symbol_remove (symbolP, &symbol_rootP, &symbol_lastP);
3925 symbol_insert (symbolP, symbol_rootP, &symbol_rootP, &symbol_lastP);
3926 }
3927 } /* c_dot_file_symbol() */
3928
3929 /*
3930 * Build a 'section static' symbol.
3931 */
3932
3933 symbolS *
3934 c_section_symbol (name, idx)
3935 char *name;
3936 int idx;
3937 {
3938 symbolS *symbolP;
3939
3940 symbolP = symbol_find_base (name, DO_NOT_STRIP);
3941 if (symbolP == NULL)
3942 symbolP = symbol_new (name, idx, 0, &zero_address_frag);
3943 else
3944 {
3945 /* Mmmm. I just love violating interfaces. Makes me feel...dirty. */
3946 S_SET_SEGMENT (symbolP, idx);
3947 symbolP->sy_frag = &zero_address_frag;
3948 }
3949
3950 S_SET_STORAGE_CLASS (symbolP, C_STAT);
3951 S_SET_NUMBER_AUXILIARY (symbolP, 1);
3952
3953 SF_SET_STATICS (symbolP);
3954
3955 #ifdef TE_DELTA
3956 /* manfred@s-direktnet.de: section symbols *must* have the LOCAL bit cleared,
3957 which is set by the new definition of LOCAL_LABEL in tc-m68k.h. */
3958 SF_CLEAR_LOCAL (symbolP);
3959 #endif
3960 #ifdef TE_PE
3961 /* If the .linkonce pseudo-op was used for this section, we must
3962 store the information in the auxiliary entry for the section
3963 symbol. */
3964 if (segment_info[idx].linkonce != LINKONCE_UNSET)
3965 {
3966 int type;
3967
3968 switch (segment_info[idx].linkonce)
3969 {
3970 default:
3971 abort ();
3972 case LINKONCE_DISCARD:
3973 type = IMAGE_COMDAT_SELECT_ANY;
3974 break;
3975 case LINKONCE_ONE_ONLY:
3976 type = IMAGE_COMDAT_SELECT_NODUPLICATES;
3977 break;
3978 case LINKONCE_SAME_SIZE:
3979 type = IMAGE_COMDAT_SELECT_SAME_SIZE;
3980 break;
3981 case LINKONCE_SAME_CONTENTS:
3982 type = IMAGE_COMDAT_SELECT_EXACT_MATCH;
3983 break;
3984 }
3985
3986 SYM_AUXENT (symbolP)->x_scn.x_comdat = type;
3987 }
3988 #endif /* TE_PE */
3989
3990 return symbolP;
3991 } /* c_section_symbol() */
3992
3993 static void
3994 w_symbols (abfd, where, symbol_rootP)
3995 bfd * abfd;
3996 char *where;
3997 symbolS * symbol_rootP;
3998 {
3999 symbolS *symbolP;
4000 unsigned int i;
4001
4002 /* First fill in those values we have only just worked out */
4003 for (i = SEG_E0; i < SEG_LAST; i++)
4004 {
4005 symbolP = segment_info[i].dot;
4006 if (symbolP)
4007 {
4008 SA_SET_SCN_SCNLEN (symbolP, segment_info[i].scnhdr.s_size);
4009 SA_SET_SCN_NRELOC (symbolP, segment_info[i].scnhdr.s_nreloc);
4010 SA_SET_SCN_NLINNO (symbolP, segment_info[i].scnhdr.s_nlnno);
4011 }
4012 }
4013
4014 /*
4015 * Emit all symbols left in the symbol chain.
4016 */
4017 for (symbolP = symbol_rootP; symbolP; symbolP = symbol_next (symbolP))
4018 {
4019 /* Used to save the offset of the name. It is used to point
4020 to the string in memory but must be a file offset. */
4021 register char *temp;
4022
4023 /* We can't fix the lnnoptr field in yank_symbols with the other
4024 adjustments, because we have to wait until we know where they
4025 go in the file. */
4026 if (SF_GET_ADJ_LNNOPTR (symbolP))
4027 {
4028 SA_GET_SYM_LNNOPTR (symbolP) +=
4029 segment_info[S_GET_SEGMENT (symbolP)].scnhdr.s_lnnoptr;
4030 }
4031
4032 tc_coff_symbol_emit_hook (symbolP);
4033
4034 temp = S_GET_NAME (symbolP);
4035 if (SF_GET_STRING (symbolP))
4036 {
4037 S_SET_OFFSET (symbolP, symbolP->sy_name_offset);
4038 S_SET_ZEROES (symbolP, 0);
4039 }
4040 else
4041 {
4042 memset (symbolP->sy_symbol.ost_entry.n_name, 0, SYMNMLEN);
4043 strncpy (symbolP->sy_symbol.ost_entry.n_name, temp, SYMNMLEN);
4044 }
4045 where = symbol_to_chars (abfd, where, symbolP);
4046 S_SET_NAME (symbolP, temp);
4047 }
4048
4049 } /* w_symbols() */
4050
4051 static void
4052 obj_coff_lcomm (ignore)
4053 int ignore ATTRIBUTE_UNUSED;
4054 {
4055 s_lcomm(0);
4056 return;
4057 #if 0
4058 char *name;
4059 char c;
4060 int temp;
4061 char *p;
4062
4063 symbolS *symbolP;
4064
4065 name = input_line_pointer;
4066
4067 c = get_symbol_end ();
4068 p = input_line_pointer;
4069 *p = c;
4070 SKIP_WHITESPACE ();
4071 if (*input_line_pointer != ',')
4072 {
4073 as_bad (_("Expected comma after name"));
4074 ignore_rest_of_line ();
4075 return;
4076 }
4077 if (*input_line_pointer == '\n')
4078 {
4079 as_bad (_("Missing size expression"));
4080 return;
4081 }
4082 input_line_pointer++;
4083 if ((temp = get_absolute_expression ()) < 0)
4084 {
4085 as_warn (_("lcomm length (%d.) <0! Ignored."), temp);
4086 ignore_rest_of_line ();
4087 return;
4088 }
4089 *p = 0;
4090
4091 symbolP = symbol_find_or_make (name);
4092
4093 if (S_GET_SEGMENT (symbolP) == SEG_UNKNOWN &&
4094 S_GET_VALUE (symbolP) == 0)
4095 {
4096 if (! need_pass_2)
4097 {
4098 char *p;
4099 segT current_seg = now_seg; /* save current seg */
4100 subsegT current_subseg = now_subseg;
4101
4102 subseg_set (SEG_E2, 1);
4103 symbolP->sy_frag = frag_now;
4104 p = frag_var(rs_org, 1, 1, (relax_substateT)0, symbolP,
4105 (offsetT) temp, (char *) 0);
4106 *p = 0;
4107 subseg_set (current_seg, current_subseg); /* restore current seg */
4108 S_SET_SEGMENT (symbolP, SEG_E2);
4109 S_SET_STORAGE_CLASS (symbolP, C_STAT);
4110 }
4111 }
4112 else
4113 as_bad (_("Symbol %s already defined"), name);
4114
4115 demand_empty_rest_of_line ();
4116 #endif
4117 }
4118
4119 static void
4120 fixup_mdeps (frags, h, this_segment)
4121 fragS * frags;
4122 object_headers * h;
4123 segT this_segment;
4124 {
4125 subseg_change (this_segment, 0);
4126 while (frags)
4127 {
4128 switch (frags->fr_type)
4129 {
4130 case rs_align:
4131 case rs_align_code:
4132 case rs_align_test:
4133 case rs_org:
4134 #ifdef HANDLE_ALIGN
4135 HANDLE_ALIGN (frags);
4136 #endif
4137 frags->fr_type = rs_fill;
4138 frags->fr_offset =
4139 ((frags->fr_next->fr_address - frags->fr_address - frags->fr_fix)
4140 / frags->fr_var);
4141 break;
4142 case rs_machine_dependent:
4143 md_convert_frag (h, this_segment, frags);
4144 frag_wane (frags);
4145 break;
4146 default:
4147 ;
4148 }
4149 frags = frags->fr_next;
4150 }
4151 }
4152
4153 #if 1
4154
4155 #ifndef TC_FORCE_RELOCATION
4156 #define TC_FORCE_RELOCATION(fix) 0
4157 #endif
4158
4159 static void
4160 fixup_segment (segP, this_segment_type)
4161 segment_info_type * segP;
4162 segT this_segment_type;
4163 {
4164 register fixS * fixP;
4165 register symbolS *add_symbolP;
4166 register symbolS *sub_symbolP;
4167 long add_number;
4168 register int size;
4169 register char *place;
4170 register long where;
4171 register char pcrel;
4172 register fragS *fragP;
4173 register segT add_symbol_segment = absolute_section;
4174
4175 for (fixP = segP->fix_root; fixP; fixP = fixP->fx_next)
4176 {
4177 fragP = fixP->fx_frag;
4178 know (fragP);
4179 where = fixP->fx_where;
4180 place = fragP->fr_literal + where;
4181 size = fixP->fx_size;
4182 add_symbolP = fixP->fx_addsy;
4183 sub_symbolP = fixP->fx_subsy;
4184 add_number = fixP->fx_offset;
4185 pcrel = fixP->fx_pcrel;
4186
4187 /* We want function-relative stabs to work on systems which
4188 may use a relaxing linker; thus we must handle the sym1-sym2
4189 fixups function-relative stabs generates.
4190
4191 Of course, if you actually enable relaxing in the linker, the
4192 line and block scoping information is going to be incorrect
4193 in some cases. The only way to really fix this is to support
4194 a reloc involving the difference of two symbols. */
4195 if (linkrelax
4196 && (!sub_symbolP || pcrel))
4197 continue;
4198
4199 #ifdef TC_I960
4200 if (fixP->fx_tcbit && SF_GET_CALLNAME (add_symbolP))
4201 {
4202 /* Relocation should be done via the associated 'bal' entry
4203 point symbol. */
4204
4205 if (!SF_GET_BALNAME (tc_get_bal_of_call (add_symbolP)))
4206 {
4207 as_bad_where (fixP->fx_file, fixP->fx_line,
4208 _("No 'bal' entry point for leafproc %s"),
4209 S_GET_NAME (add_symbolP));
4210 continue;
4211 }
4212 fixP->fx_addsy = add_symbolP = tc_get_bal_of_call (add_symbolP);
4213 }
4214 #endif
4215
4216 /* Make sure the symbols have been resolved; this may not have
4217 happened if these are expression symbols. */
4218 if (add_symbolP != NULL && ! add_symbolP->sy_resolved)
4219 resolve_symbol_value (add_symbolP);
4220
4221 if (add_symbolP != NULL)
4222 {
4223 /* If this fixup is against a symbol which has been equated
4224 to another symbol, convert it to the other symbol. */
4225 if (add_symbolP->sy_value.X_op == O_symbol
4226 && (! S_IS_DEFINED (add_symbolP)
4227 || S_IS_COMMON (add_symbolP)))
4228 {
4229 while (add_symbolP->sy_value.X_op == O_symbol
4230 && (! S_IS_DEFINED (add_symbolP)
4231 || S_IS_COMMON (add_symbolP)))
4232 {
4233 symbolS *n;
4234
4235 /* We must avoid looping, as that can occur with a
4236 badly written program. */
4237 n = add_symbolP->sy_value.X_add_symbol;
4238 if (n == add_symbolP)
4239 break;
4240 add_number += add_symbolP->sy_value.X_add_number;
4241 add_symbolP = n;
4242 }
4243 fixP->fx_addsy = add_symbolP;
4244 fixP->fx_offset = add_number;
4245 }
4246 }
4247
4248 if (sub_symbolP != NULL && ! sub_symbolP->sy_resolved)
4249 resolve_symbol_value (sub_symbolP);
4250
4251 if (add_symbolP != NULL
4252 && add_symbolP->sy_mri_common)
4253 {
4254 know (add_symbolP->sy_value.X_op == O_symbol);
4255 add_number += S_GET_VALUE (add_symbolP);
4256 fixP->fx_offset = add_number;
4257 add_symbolP = fixP->fx_addsy = add_symbolP->sy_value.X_add_symbol;
4258 }
4259
4260 if (add_symbolP)
4261 {
4262 add_symbol_segment = S_GET_SEGMENT (add_symbolP);
4263 } /* if there is an addend */
4264
4265 if (sub_symbolP)
4266 {
4267 if (add_symbolP == NULL || add_symbol_segment == absolute_section)
4268 {
4269 if (add_symbolP != NULL)
4270 {
4271 add_number += S_GET_VALUE (add_symbolP);
4272 add_symbolP = NULL;
4273 fixP->fx_addsy = NULL;
4274 }
4275
4276 /* It's just -sym. */
4277 if (S_GET_SEGMENT (sub_symbolP) == absolute_section)
4278 {
4279 add_number -= S_GET_VALUE (sub_symbolP);
4280 fixP->fx_subsy = 0;
4281 fixP->fx_done = 1;
4282 }
4283 else
4284 {
4285 #ifndef TC_M68K
4286 as_bad_where (fixP->fx_file, fixP->fx_line,
4287 _("Negative of non-absolute symbol %s"),
4288 S_GET_NAME (sub_symbolP));
4289 #endif
4290 add_number -= S_GET_VALUE (sub_symbolP);
4291 } /* not absolute */
4292
4293 /* if sub_symbol is in the same segment that add_symbol
4294 and add_symbol is either in DATA, TEXT, BSS or ABSOLUTE */
4295 }
4296 else if (S_GET_SEGMENT (sub_symbolP) == add_symbol_segment
4297 && SEG_NORMAL (add_symbol_segment))
4298 {
4299 /* Difference of 2 symbols from same segment. Can't
4300 make difference of 2 undefineds: 'value' means
4301 something different for N_UNDF. */
4302 #ifdef TC_I960
4303 /* Makes no sense to use the difference of 2 arbitrary symbols
4304 as the target of a call instruction. */
4305 if (fixP->fx_tcbit)
4306 {
4307 as_bad_where (fixP->fx_file, fixP->fx_line,
4308 _("callj to difference of 2 symbols"));
4309 }
4310 #endif /* TC_I960 */
4311 add_number += S_GET_VALUE (add_symbolP) -
4312 S_GET_VALUE (sub_symbolP);
4313 add_symbolP = NULL;
4314
4315 if (!TC_FORCE_RELOCATION (fixP))
4316 {
4317 fixP->fx_addsy = NULL;
4318 fixP->fx_subsy = NULL;
4319 fixP->fx_done = 1;
4320 #ifdef TC_M68K /* is this right? */
4321 pcrel = 0;
4322 fixP->fx_pcrel = 0;
4323 #endif
4324 }
4325 }
4326 else
4327 {
4328 /* Different segments in subtraction. */
4329 know (!(S_IS_EXTERNAL (sub_symbolP) && (S_GET_SEGMENT (sub_symbolP) == absolute_section)));
4330
4331 if ((S_GET_SEGMENT (sub_symbolP) == absolute_section))
4332 {
4333 add_number -= S_GET_VALUE (sub_symbolP);
4334 }
4335 #ifdef DIFF_EXPR_OK
4336 else if (S_GET_SEGMENT (sub_symbolP) == this_segment_type
4337 #if 0 /* Okay for 68k, at least... */
4338 && !pcrel
4339 #endif
4340 )
4341 {
4342 /* Make it pc-relative. */
4343 add_number += (md_pcrel_from (fixP)
4344 - S_GET_VALUE (sub_symbolP));
4345 pcrel = 1;
4346 fixP->fx_pcrel = 1;
4347 sub_symbolP = 0;
4348 fixP->fx_subsy = 0;
4349 }
4350 #endif
4351 else
4352 {
4353 as_bad_where (fixP->fx_file, fixP->fx_line,
4354 _("Can't emit reloc {- %s-seg symbol \"%s\"} @ file address %ld."),
4355 segment_name (S_GET_SEGMENT (sub_symbolP)),
4356 S_GET_NAME (sub_symbolP),
4357 (long) (fragP->fr_address + where));
4358 } /* if absolute */
4359 }
4360 } /* if sub_symbolP */
4361
4362 if (add_symbolP)
4363 {
4364 if (add_symbol_segment == this_segment_type && pcrel)
4365 {
4366 /*
4367 * This fixup was made when the symbol's segment was
4368 * SEG_UNKNOWN, but it is now in the local segment.
4369 * So we know how to do the address without relocation.
4370 */
4371 #ifdef TC_I960
4372 /* reloc_callj() may replace a 'call' with a 'calls' or a 'bal',
4373 * in which cases it modifies *fixP as appropriate. In the case
4374 * of a 'calls', no further work is required, and *fixP has been
4375 * set up to make the rest of the code below a no-op.
4376 */
4377 reloc_callj (fixP);
4378 #endif /* TC_I960 */
4379
4380 add_number += S_GET_VALUE (add_symbolP);
4381 add_number -= md_pcrel_from (fixP);
4382
4383 /* We used to do
4384 add_number -= segP->scnhdr.s_vaddr;
4385 if defined (TC_I386) || defined (TE_LYNX). I now
4386 think that was an error propagated from the case when
4387 we are going to emit the relocation. If we are not
4388 going to emit the relocation, then we just want to
4389 set add_number to the difference between the symbols.
4390 This is a case that would only arise when there is a
4391 PC relative reference from a section other than .text
4392 to a symbol defined in the same section, and the
4393 reference is not relaxed. Since jump instructions on
4394 the i386 are relaxed, this could only arise with a
4395 call instruction. */
4396
4397 pcrel = 0; /* Lie. Don't want further pcrel processing. */
4398 if (!TC_FORCE_RELOCATION (fixP))
4399 {
4400 fixP->fx_addsy = NULL;
4401 fixP->fx_done = 1;
4402 }
4403 }
4404 else
4405 {
4406 switch (add_symbol_segment)
4407 {
4408 case absolute_section:
4409 #ifdef TC_I960
4410 reloc_callj (fixP); /* See comment about reloc_callj() above*/
4411 #endif /* TC_I960 */
4412 add_number += S_GET_VALUE (add_symbolP);
4413 add_symbolP = NULL;
4414
4415 if (!TC_FORCE_RELOCATION (fixP))
4416 {
4417 fixP->fx_addsy = NULL;
4418 fixP->fx_done = 1;
4419 }
4420 break;
4421 default:
4422
4423 #if defined(TC_A29K) || (defined(TE_PE) && defined(TC_I386)) || defined(TC_M88K)
4424 /* This really should be handled in the linker, but
4425 backward compatibility forbids. */
4426 add_number += S_GET_VALUE (add_symbolP);
4427 #else
4428 add_number += S_GET_VALUE (add_symbolP) +
4429 segment_info[S_GET_SEGMENT (add_symbolP)].scnhdr.s_paddr;
4430 #endif
4431 break;
4432
4433 case SEG_UNKNOWN:
4434 #ifdef TC_I960
4435 if ((int) fixP->fx_bit_fixP == 13)
4436 {
4437 /* This is a COBR instruction. They have only a
4438 * 13-bit displacement and are only to be used
4439 * for local branches: flag as error, don't generate
4440 * relocation.
4441 */
4442 as_bad_where (fixP->fx_file, fixP->fx_line,
4443 _("can't use COBR format with external label"));
4444 fixP->fx_addsy = NULL;
4445 fixP->fx_done = 1;
4446 continue;
4447 } /* COBR */
4448 #endif /* TC_I960 */
4449 #if ((defined (TC_I386) || defined (TE_LYNX) || defined (TE_AUX)) && !defined(TE_PE)) || defined (COFF_COMMON_ADDEND)
4450 /* 386 COFF uses a peculiar format in which the
4451 value of a common symbol is stored in the .text
4452 segment (I've checked this on SVR3.2 and SCO
4453 3.2.2) Ian Taylor <ian@cygnus.com>. */
4454 /* This is also true for 68k COFF on sysv machines
4455 (Checked on Motorola sysv68 R3V6 and R3V7.1, and also on
4456 UNIX System V/M68000, Release 1.0 from ATT/Bell Labs)
4457 Philippe De Muyter <phdm@info.ucl.ac.be>. */
4458 if (S_IS_COMMON (add_symbolP))
4459 add_number += S_GET_VALUE (add_symbolP);
4460 #endif
4461 break;
4462
4463 } /* switch on symbol seg */
4464 } /* if not in local seg */
4465 } /* if there was a + symbol */
4466
4467 if (pcrel)
4468 {
4469 #if !defined(TC_M88K) && !(defined(TE_PE) && defined(TC_I386)) && !defined(TC_A29K)
4470 /* This adjustment is not correct on the m88k, for which the
4471 linker does all the computation. */
4472 add_number -= md_pcrel_from (fixP);
4473 #endif
4474 if (add_symbolP == 0)
4475 {
4476 fixP->fx_addsy = &abs_symbol;
4477 } /* if there's an add_symbol */
4478 #if defined (TC_I386) || defined (TE_LYNX) || defined (TC_I960) || defined (TC_M68K)
4479 /* On the 386 we must adjust by the segment vaddr as well.
4480 Ian Taylor.
4481
4482 I changed the i960 to work this way as well. This is
4483 compatible with the current GNU linker behaviour. I do
4484 not know what other i960 COFF assemblers do. This is not
4485 a common case: normally, only assembler code will contain
4486 a PC relative reloc, and only branches which do not
4487 originate in the .text section will have a non-zero
4488 address.
4489
4490 I changed the m68k to work this way as well. This will
4491 break existing PC relative relocs from sections which do
4492 not start at address 0, but it will make ld -r work.
4493 Ian Taylor, 4 Oct 96. */
4494
4495 add_number -= segP->scnhdr.s_vaddr;
4496 #endif
4497 } /* if pcrel */
4498
4499 md_apply_fix3 (fixP, (valueT *) & add_number, this_segment_type);
4500
4501 if (!fixP->fx_bit_fixP && ! fixP->fx_no_overflow)
4502 {
4503 #ifndef TC_M88K
4504 /* The m88k uses the offset field of the reloc to get around
4505 this problem. */
4506 if ((size == 1
4507 && ((add_number & ~0xFF)
4508 || (fixP->fx_signed && (add_number & 0x80)))
4509 && ((add_number & ~0xFF) != (-1 & ~0xFF)
4510 || (add_number & 0x80) == 0))
4511 || (size == 2
4512 && ((add_number & ~0xFFFF)
4513 || (fixP->fx_signed && (add_number & 0x8000)))
4514 && ((add_number & ~0xFFFF) != (-1 & ~0xFFFF)
4515 || (add_number & 0x8000) == 0)))
4516 {
4517 as_bad_where (fixP->fx_file, fixP->fx_line,
4518 _("Value of %ld too large for field of %d bytes at 0x%lx"),
4519 (long) add_number, size,
4520 (unsigned long) (fragP->fr_address + where));
4521 }
4522 #endif
4523 #ifdef WARN_SIGNED_OVERFLOW_WORD
4524 /* Warn if a .word value is too large when treated as a
4525 signed number. We already know it is not too negative.
4526 This is to catch over-large switches generated by gcc on
4527 the 68k. */
4528 if (!flag_signed_overflow_ok
4529 && size == 2
4530 && add_number > 0x7fff)
4531 as_bad_where (fixP->fx_file, fixP->fx_line,
4532 _("Signed .word overflow; switch may be too large; %ld at 0x%lx"),
4533 (long) add_number,
4534 (unsigned long) (fragP->fr_address + where));
4535 #endif
4536 } /* not a bit fix */
4537 } /* For each fixS in this segment. */
4538 } /* fixup_segment() */
4539
4540 #endif
4541
4542 /* The first entry in a .stab section is special. */
4543
4544 void
4545 obj_coff_init_stab_section (seg)
4546 segT seg;
4547 {
4548 char *file;
4549 char *p;
4550 char *stabstr_name;
4551 unsigned int stroff;
4552
4553 /* Make space for this first symbol. */
4554 p = frag_more (12);
4555 /* Zero it out. */
4556 memset (p, 0, 12);
4557 as_where (&file, (unsigned int *) NULL);
4558 stabstr_name = (char *) alloca (strlen (segment_info[seg].name) + 4);
4559 strcpy (stabstr_name, segment_info[seg].name);
4560 strcat (stabstr_name, "str");
4561 stroff = get_stab_string_offset (file, stabstr_name);
4562 know (stroff == 1);
4563 md_number_to_chars (p, stroff, 4);
4564 }
4565
4566 /* Fill in the counts in the first entry in a .stab section. */
4567
4568 static void
4569 adjust_stab_section(abfd, seg)
4570 bfd *abfd;
4571 segT seg;
4572 {
4573 segT stabstrseg = SEG_UNKNOWN;
4574 const char *secname, *name2;
4575 char *name;
4576 char *p = NULL;
4577 int i, strsz = 0, nsyms;
4578 fragS *frag = segment_info[seg].frchainP->frch_root;
4579
4580 /* Look for the associated string table section. */
4581
4582 secname = segment_info[seg].name;
4583 name = (char *) alloca (strlen (secname) + 4);
4584 strcpy (name, secname);
4585 strcat (name, "str");
4586
4587 for (i = SEG_E0; i < SEG_UNKNOWN; i++)
4588 {
4589 name2 = segment_info[i].name;
4590 if (name2 != NULL && strncmp(name2, name, 8) == 0)
4591 {
4592 stabstrseg = i;
4593 break;
4594 }
4595 }
4596
4597 /* If we found the section, get its size. */
4598 if (stabstrseg != SEG_UNKNOWN)
4599 strsz = size_section (abfd, stabstrseg);
4600
4601 nsyms = size_section (abfd, seg) / 12 - 1;
4602
4603 /* Look for the first frag of sufficient size for the initial stab
4604 symbol, and collect a pointer to it. */
4605 while (frag && frag->fr_fix < 12)
4606 frag = frag->fr_next;
4607 assert (frag != 0);
4608 p = frag->fr_literal;
4609 assert (p != 0);
4610
4611 /* Write in the number of stab symbols and the size of the string
4612 table. */
4613 bfd_h_put_16 (abfd, (bfd_vma) nsyms, (bfd_byte *) p + 6);
4614 bfd_h_put_32 (abfd, (bfd_vma) strsz, (bfd_byte *) p + 8);
4615 }
4616
4617 #endif /* not BFD_ASSEMBLER */
4618
4619 const pseudo_typeS coff_pseudo_table[] =
4620 {
4621 {"def", obj_coff_def, 0},
4622 {"dim", obj_coff_dim, 0},
4623 {"endef", obj_coff_endef, 0},
4624 {"line", obj_coff_line, 0},
4625 {"ln", obj_coff_ln, 0},
4626 #ifdef BFD_ASSEMBLER
4627 {"loc", obj_coff_loc, 0},
4628 #endif
4629 {"appline", obj_coff_ln, 1},
4630 {"scl", obj_coff_scl, 0},
4631 {"size", obj_coff_size, 0},
4632 {"tag", obj_coff_tag, 0},
4633 {"type", obj_coff_type, 0},
4634 {"val", obj_coff_val, 0},
4635 {"section", obj_coff_section, 0},
4636 {"sect", obj_coff_section, 0},
4637 /* FIXME: We ignore the MRI short attribute. */
4638 {"section.s", obj_coff_section, 0},
4639 {"sect.s", obj_coff_section, 0},
4640 /* We accept the .bss directive for backward compatibility with
4641 earlier versions of gas. */
4642 {"bss", obj_coff_bss, 0},
4643 {"weak", obj_coff_weak, 0},
4644 {"ident", obj_coff_ident, 0},
4645 #ifndef BFD_ASSEMBLER
4646 {"use", obj_coff_section, 0},
4647 {"text", obj_coff_text, 0},
4648 {"data", obj_coff_data, 0},
4649 {"lcomm", obj_coff_lcomm, 0},
4650 #else
4651 {"optim", s_ignore, 0}, /* For sun386i cc (?) */
4652 #endif
4653 {"version", s_ignore, 0},
4654 {"ABORT", s_abort, 0},
4655 #ifdef TC_M88K
4656 /* The m88k uses sdef instead of def. */
4657 {"sdef", obj_coff_def, 0},
4658 #endif
4659 {NULL, NULL, 0} /* end sentinel */
4660 }; /* coff_pseudo_table */
4661 \f
4662 #ifdef BFD_ASSEMBLER
4663
4664 /* Support for a COFF emulation. */
4665
4666 static void coff_pop_insert PARAMS ((void));
4667 static int coff_separate_stab_sections PARAMS ((void));
4668
4669 static void
4670 coff_pop_insert ()
4671 {
4672 pop_insert (coff_pseudo_table);
4673 }
4674
4675 static int
4676 coff_separate_stab_sections ()
4677 {
4678 return 1;
4679 }
4680
4681 const struct format_ops coff_format_ops =
4682 {
4683 bfd_target_coff_flavour,
4684 0, /* dfl_leading_underscore */
4685 1, /* emit_section_symbols */
4686 0, /* begin */
4687 c_dot_file_symbol,
4688 coff_frob_symbol,
4689 0, /* frob_file */
4690 0, /* frob_file_before_adjust */
4691 coff_frob_file_after_relocs,
4692 0, /* s_get_size */
4693 0, /* s_set_size */
4694 0, /* s_get_align */
4695 0, /* s_set_align */
4696 0, /* s_get_other */
4697 0, /* s_set_other */
4698 0, /* s_get_desc */
4699 0, /* s_set_desc */
4700 0, /* s_get_type */
4701 0, /* s_set_type */
4702 0, /* copy_symbol_attributes */
4703 0, /* generate_asm_lineno */
4704 0, /* process_stab */
4705 coff_separate_stab_sections,
4706 obj_coff_init_stab_section,
4707 0, /* sec_sym_ok_for_reloc */
4708 coff_pop_insert,
4709 0, /* ecoff_set_ext */
4710 coff_obj_read_begin_hook,
4711 coff_obj_symbol_new_hook
4712 };
4713
4714 #endif
This page took 0.190471 seconds and 5 git commands to generate.