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1 | /* coff object file format | |
2 | Copyright (C) 1989, 90, 91, 92, 93, 94, 95, 96, 1997 | |
3 | Free Software Foundation, Inc. | |
4 | ||
5 | This file is part of GAS. | |
6 | ||
7 | GAS is free software; you can redistribute it and/or modify | |
8 | it under the terms of the GNU General Public License as published by | |
9 | the Free Software Foundation; either version 2, or (at your option) | |
10 | any later version. | |
11 | ||
12 | GAS is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
18 | along with GAS; see the file COPYING. If not, write to the Free | |
19 | Software Foundation, 59 Temple Place - Suite 330, Boston, MA | |
20 | 02111-1307, USA. */ | |
21 | ||
22 | #define OBJ_HEADER "obj-coff.h" | |
23 | ||
24 | #include "as.h" | |
25 | #include "obstack.h" | |
26 | #include "subsegs.h" | |
27 | ||
28 | /* I think this is probably always correct. */ | |
29 | #ifndef KEEP_RELOC_INFO | |
30 | #define KEEP_RELOC_INFO | |
31 | #endif | |
32 | ||
33 | const char *s_get_name PARAMS ((symbolS * s)); | |
34 | static symbolS *def_symbol_in_progress; | |
35 | ||
36 | \f | |
37 | /* stack stuff */ | |
38 | typedef struct | |
39 | { | |
40 | unsigned long chunk_size; | |
41 | unsigned long element_size; | |
42 | unsigned long size; | |
43 | char *data; | |
44 | unsigned long pointer; | |
45 | } | |
46 | stack; | |
47 | ||
48 | static stack * | |
49 | stack_init (chunk_size, element_size) | |
50 | unsigned long chunk_size; | |
51 | unsigned long element_size; | |
52 | { | |
53 | stack *st; | |
54 | ||
55 | st = (stack *) malloc (sizeof (stack)); | |
56 | if (!st) | |
57 | return 0; | |
58 | st->data = malloc (chunk_size); | |
59 | if (!st->data) | |
60 | { | |
61 | free (st); | |
62 | return 0; | |
63 | } | |
64 | st->pointer = 0; | |
65 | st->size = chunk_size; | |
66 | st->chunk_size = chunk_size; | |
67 | st->element_size = element_size; | |
68 | return st; | |
69 | } | |
70 | ||
71 | #if 0 | |
72 | /* Not currently used. */ | |
73 | static void | |
74 | stack_delete (st) | |
75 | stack *st; | |
76 | { | |
77 | free (st->data); | |
78 | free (st); | |
79 | } | |
80 | #endif | |
81 | ||
82 | static char * | |
83 | stack_push (st, element) | |
84 | stack *st; | |
85 | char *element; | |
86 | { | |
87 | if (st->pointer + st->element_size >= st->size) | |
88 | { | |
89 | st->size += st->chunk_size; | |
90 | if ((st->data = xrealloc (st->data, st->size)) == (char *) 0) | |
91 | return (char *) 0; | |
92 | } | |
93 | memcpy (st->data + st->pointer, element, st->element_size); | |
94 | st->pointer += st->element_size; | |
95 | return st->data + st->pointer; | |
96 | } | |
97 | ||
98 | static char * | |
99 | stack_pop (st) | |
100 | stack *st; | |
101 | { | |
102 | if (st->pointer < st->element_size) | |
103 | { | |
104 | st->pointer = 0; | |
105 | return (char *) 0; | |
106 | } | |
107 | st->pointer -= st->element_size; | |
108 | return st->data + st->pointer; | |
109 | } | |
110 | \f | |
111 | /* | |
112 | * Maintain a list of the tagnames of the structres. | |
113 | */ | |
114 | ||
115 | static struct hash_control *tag_hash; | |
116 | ||
117 | static void | |
118 | tag_init () | |
119 | { | |
120 | tag_hash = hash_new (); | |
121 | } | |
122 | ||
123 | static void | |
124 | tag_insert (name, symbolP) | |
125 | const char *name; | |
126 | symbolS *symbolP; | |
127 | { | |
128 | const char *error_string; | |
129 | ||
130 | if ((error_string = hash_jam (tag_hash, name, (char *) symbolP))) | |
131 | { | |
132 | as_fatal ("Inserting \"%s\" into structure table failed: %s", | |
133 | name, error_string); | |
134 | } | |
135 | } | |
136 | ||
137 | static symbolS * | |
138 | tag_find (name) | |
139 | char *name; | |
140 | { | |
141 | #ifdef STRIP_UNDERSCORE | |
142 | if (*name == '_') | |
143 | name++; | |
144 | #endif /* STRIP_UNDERSCORE */ | |
145 | return (symbolS *) hash_find (tag_hash, name); | |
146 | } | |
147 | ||
148 | static symbolS * | |
149 | tag_find_or_make (name) | |
150 | char *name; | |
151 | { | |
152 | symbolS *symbolP; | |
153 | ||
154 | if ((symbolP = tag_find (name)) == NULL) | |
155 | { | |
156 | symbolP = symbol_new (name, undefined_section, | |
157 | 0, &zero_address_frag); | |
158 | ||
159 | tag_insert (S_GET_NAME (symbolP), symbolP); | |
160 | #ifdef BFD_ASSEMBLER | |
161 | symbol_table_insert (symbolP); | |
162 | #endif | |
163 | } /* not found */ | |
164 | ||
165 | return symbolP; | |
166 | } | |
167 | ||
168 | ||
169 | ||
170 | #ifdef BFD_ASSEMBLER | |
171 | ||
172 | static void SA_SET_SYM_TAGNDX PARAMS ((symbolS *, symbolS *)); | |
173 | ||
174 | #define GET_FILENAME_STRING(X) \ | |
175 | ((char*)(&((X)->sy_symbol.ost_auxent->x_file.x_n.x_offset))[1]) | |
176 | ||
177 | /* @@ Ick. */ | |
178 | static segT | |
179 | fetch_coff_debug_section () | |
180 | { | |
181 | static segT debug_section; | |
182 | if (!debug_section) | |
183 | { | |
184 | CONST asymbol *s; | |
185 | s = bfd_make_debug_symbol (stdoutput, (char *) 0, 0); | |
186 | assert (s != 0); | |
187 | debug_section = s->section; | |
188 | } | |
189 | return debug_section; | |
190 | } | |
191 | ||
192 | void | |
193 | SA_SET_SYM_ENDNDX (sym, val) | |
194 | symbolS *sym; | |
195 | symbolS *val; | |
196 | { | |
197 | combined_entry_type *entry, *p; | |
198 | ||
199 | entry = &coffsymbol (sym->bsym)->native[1]; | |
200 | p = coffsymbol (val->bsym)->native; | |
201 | entry->u.auxent.x_sym.x_fcnary.x_fcn.x_endndx.p = p; | |
202 | entry->fix_end = 1; | |
203 | } | |
204 | ||
205 | static void | |
206 | SA_SET_SYM_TAGNDX (sym, val) | |
207 | symbolS *sym; | |
208 | symbolS *val; | |
209 | { | |
210 | combined_entry_type *entry, *p; | |
211 | ||
212 | entry = &coffsymbol (sym->bsym)->native[1]; | |
213 | p = coffsymbol (val->bsym)->native; | |
214 | entry->u.auxent.x_sym.x_tagndx.p = p; | |
215 | entry->fix_tag = 1; | |
216 | } | |
217 | ||
218 | static int | |
219 | S_GET_DATA_TYPE (sym) | |
220 | symbolS *sym; | |
221 | { | |
222 | return coffsymbol (sym->bsym)->native->u.syment.n_type; | |
223 | } | |
224 | ||
225 | int | |
226 | S_SET_DATA_TYPE (sym, val) | |
227 | symbolS *sym; | |
228 | int val; | |
229 | { | |
230 | coffsymbol (sym->bsym)->native->u.syment.n_type = val; | |
231 | return val; | |
232 | } | |
233 | ||
234 | int | |
235 | S_GET_STORAGE_CLASS (sym) | |
236 | symbolS *sym; | |
237 | { | |
238 | return coffsymbol (sym->bsym)->native->u.syment.n_sclass; | |
239 | } | |
240 | ||
241 | int | |
242 | S_SET_STORAGE_CLASS (sym, val) | |
243 | symbolS *sym; | |
244 | int val; | |
245 | { | |
246 | coffsymbol (sym->bsym)->native->u.syment.n_sclass = val; | |
247 | return val; | |
248 | } | |
249 | ||
250 | /* Merge a debug symbol containing debug information into a normal symbol. */ | |
251 | ||
252 | void | |
253 | c_symbol_merge (debug, normal) | |
254 | symbolS *debug; | |
255 | symbolS *normal; | |
256 | { | |
257 | S_SET_DATA_TYPE (normal, S_GET_DATA_TYPE (debug)); | |
258 | S_SET_STORAGE_CLASS (normal, S_GET_STORAGE_CLASS (debug)); | |
259 | ||
260 | if (S_GET_NUMBER_AUXILIARY (debug) > S_GET_NUMBER_AUXILIARY (normal)) | |
261 | /* take the most we have */ | |
262 | S_SET_NUMBER_AUXILIARY (normal, S_GET_NUMBER_AUXILIARY (debug)); | |
263 | ||
264 | if (S_GET_NUMBER_AUXILIARY (debug) > 0) | |
265 | { | |
266 | /* Move all the auxiliary information. */ | |
267 | /* @@ How many fields do we want to preserve? Would it make more | |
268 | sense to pick and choose those we want to copy? Should look | |
269 | into this further.... [raeburn:19920512.2209EST] */ | |
270 | alent *linenos; | |
271 | linenos = coffsymbol (normal->bsym)->lineno; | |
272 | memcpy ((char *) &coffsymbol (normal->bsym)->native, | |
273 | (char *) &coffsymbol (debug->bsym)->native, | |
274 | S_GET_NUMBER_AUXILIARY(debug) * AUXESZ); | |
275 | coffsymbol (normal->bsym)->lineno = linenos; | |
276 | } | |
277 | ||
278 | /* Move the debug flags. */ | |
279 | SF_SET_DEBUG_FIELD (normal, SF_GET_DEBUG_FIELD (debug)); | |
280 | } | |
281 | ||
282 | void | |
283 | c_dot_file_symbol (filename) | |
284 | char *filename; | |
285 | { | |
286 | symbolS *symbolP; | |
287 | ||
288 | symbolP = symbol_new (filename, bfd_abs_section_ptr, 0, &zero_address_frag); | |
289 | ||
290 | S_SET_STORAGE_CLASS (symbolP, C_FILE); | |
291 | S_SET_NUMBER_AUXILIARY (symbolP, 1); | |
292 | ||
293 | symbolP->bsym->flags = BSF_DEBUGGING; | |
294 | ||
295 | #ifndef NO_LISTING | |
296 | { | |
297 | extern int listing; | |
298 | if (listing) | |
299 | { | |
300 | listing_source_file (filename); | |
301 | } | |
302 | } | |
303 | #endif | |
304 | ||
305 | /* Make sure that the symbol is first on the symbol chain */ | |
306 | if (symbol_rootP != symbolP) | |
307 | { | |
308 | symbol_remove (symbolP, &symbol_rootP, &symbol_lastP); | |
309 | symbol_insert (symbolP, symbol_rootP, &symbol_rootP, &symbol_lastP); | |
310 | } /* if not first on the list */ | |
311 | } | |
312 | ||
313 | /* Line number handling */ | |
314 | ||
315 | struct line_no { | |
316 | struct line_no *next; | |
317 | fragS *frag; | |
318 | alent l; | |
319 | }; | |
320 | ||
321 | int coff_line_base; | |
322 | ||
323 | /* Symbol of last function, which we should hang line#s off of. */ | |
324 | static symbolS *line_fsym; | |
325 | ||
326 | #define in_function() (line_fsym != 0) | |
327 | #define clear_function() (line_fsym = 0) | |
328 | #define set_function(F) (line_fsym = (F), coff_add_linesym (F)) | |
329 | ||
330 | \f | |
331 | void | |
332 | coff_obj_symbol_new_hook (symbolP) | |
333 | symbolS *symbolP; | |
334 | { | |
335 | char underscore = 0; /* Symbol has leading _ */ | |
336 | ||
337 | { | |
338 | long sz = (OBJ_COFF_MAX_AUXENTRIES + 1) * sizeof (combined_entry_type); | |
339 | char *s = (char *) xmalloc (sz); | |
340 | memset (s, 0, sz); | |
341 | coffsymbol (symbolP->bsym)->native = (combined_entry_type *) s; | |
342 | } | |
343 | S_SET_DATA_TYPE (symbolP, T_NULL); | |
344 | S_SET_STORAGE_CLASS (symbolP, 0); | |
345 | S_SET_NUMBER_AUXILIARY (symbolP, 0); | |
346 | ||
347 | if (S_IS_STRING (symbolP)) | |
348 | SF_SET_STRING (symbolP); | |
349 | if (!underscore && S_IS_LOCAL (symbolP)) | |
350 | SF_SET_LOCAL (symbolP); | |
351 | } | |
352 | ||
353 | \f | |
354 | /* | |
355 | * Handle .ln directives. | |
356 | */ | |
357 | ||
358 | static symbolS *current_lineno_sym; | |
359 | static struct line_no *line_nos; | |
360 | /* @@ Blindly assume all .ln directives will be in the .text section... */ | |
361 | int coff_n_line_nos; | |
362 | ||
363 | static void | |
364 | add_lineno (frag, offset, num) | |
365 | fragS *frag; | |
366 | int offset; | |
367 | int num; | |
368 | { | |
369 | struct line_no *new_line = | |
370 | (struct line_no *) xmalloc (sizeof (struct line_no)); | |
371 | if (!current_lineno_sym) | |
372 | { | |
373 | abort (); | |
374 | } | |
375 | new_line->next = line_nos; | |
376 | new_line->frag = frag; | |
377 | new_line->l.line_number = num; | |
378 | new_line->l.u.offset = offset; | |
379 | line_nos = new_line; | |
380 | coff_n_line_nos++; | |
381 | } | |
382 | ||
383 | void | |
384 | coff_add_linesym (sym) | |
385 | symbolS *sym; | |
386 | { | |
387 | if (line_nos) | |
388 | { | |
389 | coffsymbol (current_lineno_sym->bsym)->lineno = (alent *) line_nos; | |
390 | coff_n_line_nos++; | |
391 | line_nos = 0; | |
392 | } | |
393 | current_lineno_sym = sym; | |
394 | } | |
395 | ||
396 | static void | |
397 | obj_coff_ln (appline) | |
398 | int appline; | |
399 | { | |
400 | int l; | |
401 | ||
402 | if (! appline && def_symbol_in_progress != NULL) | |
403 | { | |
404 | as_warn (".ln pseudo-op inside .def/.endef: ignored."); | |
405 | demand_empty_rest_of_line (); | |
406 | return; | |
407 | } | |
408 | ||
409 | l = get_absolute_expression (); | |
410 | if (!appline) | |
411 | { | |
412 | add_lineno (frag_now, frag_now_fix (), l); | |
413 | } | |
414 | ||
415 | if (appline) | |
416 | new_logical_line ((char *) NULL, l - 1); | |
417 | ||
418 | #ifndef NO_LISTING | |
419 | { | |
420 | extern int listing; | |
421 | ||
422 | if (listing) | |
423 | { | |
424 | if (! appline) | |
425 | l += coff_line_base - 1; | |
426 | listing_source_line (l); | |
427 | } | |
428 | } | |
429 | #endif | |
430 | ||
431 | demand_empty_rest_of_line (); | |
432 | } | |
433 | ||
434 | /* | |
435 | * def() | |
436 | * | |
437 | * Handle .def directives. | |
438 | * | |
439 | * One might ask : why can't we symbol_new if the symbol does not | |
440 | * already exist and fill it with debug information. Because of | |
441 | * the C_EFCN special symbol. It would clobber the value of the | |
442 | * function symbol before we have a chance to notice that it is | |
443 | * a C_EFCN. And a second reason is that the code is more clear this | |
444 | * way. (at least I think it is :-). | |
445 | * | |
446 | */ | |
447 | ||
448 | #define SKIP_SEMI_COLON() while (*input_line_pointer++ != ';') | |
449 | #define SKIP_WHITESPACES() while (*input_line_pointer == ' ' || \ | |
450 | *input_line_pointer == '\t') \ | |
451 | input_line_pointer++; | |
452 | ||
453 | static void | |
454 | obj_coff_def (what) | |
455 | int what; | |
456 | { | |
457 | char name_end; /* Char after the end of name */ | |
458 | char *symbol_name; /* Name of the debug symbol */ | |
459 | char *symbol_name_copy; /* Temporary copy of the name */ | |
460 | unsigned int symbol_name_length; | |
461 | ||
462 | if (def_symbol_in_progress != NULL) | |
463 | { | |
464 | as_warn (".def pseudo-op used inside of .def/.endef: ignored."); | |
465 | demand_empty_rest_of_line (); | |
466 | return; | |
467 | } /* if not inside .def/.endef */ | |
468 | ||
469 | SKIP_WHITESPACES (); | |
470 | ||
471 | symbol_name = input_line_pointer; | |
472 | #ifdef STRIP_UNDERSCORE | |
473 | if (symbol_name[0] == '_' && symbol_name[1] != 0) | |
474 | symbol_name++; | |
475 | #endif /* STRIP_UNDERSCORE */ | |
476 | ||
477 | name_end = get_symbol_end (); | |
478 | symbol_name_length = strlen (symbol_name); | |
479 | symbol_name_copy = xmalloc (symbol_name_length + 1); | |
480 | strcpy (symbol_name_copy, symbol_name); | |
481 | #ifdef tc_canonicalize_symbol_name | |
482 | symbol_name_copy = tc_canonicalize_symbol_name (symbol_name_copy); | |
483 | #endif | |
484 | ||
485 | /* Initialize the new symbol */ | |
486 | def_symbol_in_progress = symbol_make (symbol_name_copy); | |
487 | def_symbol_in_progress->sy_frag = &zero_address_frag; | |
488 | S_SET_VALUE (def_symbol_in_progress, 0); | |
489 | ||
490 | if (S_IS_STRING (def_symbol_in_progress)) | |
491 | SF_SET_STRING (def_symbol_in_progress); | |
492 | ||
493 | *input_line_pointer = name_end; | |
494 | ||
495 | demand_empty_rest_of_line (); | |
496 | } | |
497 | ||
498 | unsigned int dim_index; | |
499 | ||
500 | static void | |
501 | obj_coff_endef (ignore) | |
502 | int ignore; | |
503 | { | |
504 | symbolS *symbolP; | |
505 | /* DIM BUG FIX sac@cygnus.com */ | |
506 | dim_index = 0; | |
507 | if (def_symbol_in_progress == NULL) | |
508 | { | |
509 | as_warn (".endef pseudo-op used outside of .def/.endef: ignored."); | |
510 | demand_empty_rest_of_line (); | |
511 | return; | |
512 | } /* if not inside .def/.endef */ | |
513 | ||
514 | /* Set the section number according to storage class. */ | |
515 | switch (S_GET_STORAGE_CLASS (def_symbol_in_progress)) | |
516 | { | |
517 | case C_STRTAG: | |
518 | case C_ENTAG: | |
519 | case C_UNTAG: | |
520 | SF_SET_TAG (def_symbol_in_progress); | |
521 | /* intentional fallthrough */ | |
522 | case C_FILE: | |
523 | case C_TPDEF: | |
524 | SF_SET_DEBUG (def_symbol_in_progress); | |
525 | S_SET_SEGMENT (def_symbol_in_progress, fetch_coff_debug_section ()); | |
526 | break; | |
527 | ||
528 | case C_EFCN: | |
529 | SF_SET_LOCAL (def_symbol_in_progress); /* Do not emit this symbol. */ | |
530 | /* intentional fallthrough */ | |
531 | case C_BLOCK: | |
532 | SF_SET_PROCESS (def_symbol_in_progress); /* Will need processing before writing */ | |
533 | /* intentional fallthrough */ | |
534 | case C_FCN: | |
535 | { | |
536 | CONST char *name; | |
537 | S_SET_SEGMENT (def_symbol_in_progress, text_section); | |
538 | ||
539 | name = bfd_asymbol_name (def_symbol_in_progress->bsym); | |
540 | if (name[1] == 'b' && name[2] == 'f') | |
541 | { | |
542 | if (! in_function ()) | |
543 | as_warn ("`%s' symbol without preceding function", name); | |
544 | /* SA_SET_SYM_LNNO (def_symbol_in_progress, 12345);*/ | |
545 | /* Will need relocating */ | |
546 | SF_SET_PROCESS (def_symbol_in_progress); | |
547 | clear_function (); | |
548 | } | |
549 | } | |
550 | break; | |
551 | ||
552 | #ifdef C_AUTOARG | |
553 | case C_AUTOARG: | |
554 | #endif /* C_AUTOARG */ | |
555 | case C_AUTO: | |
556 | case C_REG: | |
557 | case C_ARG: | |
558 | case C_REGPARM: | |
559 | case C_FIELD: | |
560 | SF_SET_DEBUG (def_symbol_in_progress); | |
561 | S_SET_SEGMENT (def_symbol_in_progress, absolute_section); | |
562 | break; | |
563 | ||
564 | case C_MOS: | |
565 | case C_MOE: | |
566 | case C_MOU: | |
567 | case C_EOS: | |
568 | S_SET_SEGMENT (def_symbol_in_progress, absolute_section); | |
569 | break; | |
570 | ||
571 | case C_EXT: | |
572 | case C_STAT: | |
573 | case C_LABEL: | |
574 | /* Valid but set somewhere else (s_comm, s_lcomm, colon) */ | |
575 | break; | |
576 | ||
577 | case C_USTATIC: | |
578 | case C_EXTDEF: | |
579 | case C_ULABEL: | |
580 | as_warn ("unexpected storage class %d", | |
581 | S_GET_STORAGE_CLASS (def_symbol_in_progress)); | |
582 | break; | |
583 | } /* switch on storage class */ | |
584 | ||
585 | /* Now that we have built a debug symbol, try to find if we should | |
586 | merge with an existing symbol or not. If a symbol is C_EFCN or | |
587 | SEG_ABSOLUTE or untagged SEG_DEBUG it never merges. */ | |
588 | ||
589 | /* Two cases for functions. Either debug followed by definition or | |
590 | definition followed by debug. For definition first, we will | |
591 | merge the debug symbol into the definition. For debug first, the | |
592 | lineno entry MUST point to the definition function or else it | |
593 | will point off into space when obj_crawl_symbol_chain() merges | |
594 | the debug symbol into the real symbol. Therefor, let's presume | |
595 | the debug symbol is a real function reference. */ | |
596 | ||
597 | /* FIXME-SOON If for some reason the definition label/symbol is | |
598 | never seen, this will probably leave an undefined symbol at link | |
599 | time. */ | |
600 | ||
601 | if (S_GET_STORAGE_CLASS (def_symbol_in_progress) == C_EFCN | |
602 | || (!strcmp (bfd_get_section_name (stdoutput, | |
603 | S_GET_SEGMENT (def_symbol_in_progress)), | |
604 | "*DEBUG*") | |
605 | && !SF_GET_TAG (def_symbol_in_progress)) | |
606 | || S_GET_SEGMENT (def_symbol_in_progress) == absolute_section | |
607 | || (symbolP = symbol_find_base (S_GET_NAME (def_symbol_in_progress), DO_NOT_STRIP)) == NULL) | |
608 | { | |
609 | if (def_symbol_in_progress != symbol_lastP) | |
610 | symbol_append (def_symbol_in_progress, symbol_lastP, &symbol_rootP, | |
611 | &symbol_lastP); | |
612 | } | |
613 | else | |
614 | { | |
615 | /* This symbol already exists, merge the newly created symbol | |
616 | into the old one. This is not mandatory. The linker can | |
617 | handle duplicate symbols correctly. But I guess that it save | |
618 | a *lot* of space if the assembly file defines a lot of | |
619 | symbols. [loic] */ | |
620 | ||
621 | /* The debug entry (def_symbol_in_progress) is merged into the | |
622 | previous definition. */ | |
623 | ||
624 | c_symbol_merge (def_symbol_in_progress, symbolP); | |
625 | symbol_remove (def_symbol_in_progress, &symbol_rootP, &symbol_lastP); | |
626 | ||
627 | def_symbol_in_progress = symbolP; | |
628 | ||
629 | if (SF_GET_FUNCTION (def_symbol_in_progress) | |
630 | || SF_GET_TAG (def_symbol_in_progress) | |
631 | || S_GET_STORAGE_CLASS (def_symbol_in_progress) == C_STAT) | |
632 | { | |
633 | /* For functions, and tags, and static symbols, the symbol | |
634 | *must* be where the debug symbol appears. Move the | |
635 | existing symbol to the current place. */ | |
636 | /* If it already is at the end of the symbol list, do nothing */ | |
637 | if (def_symbol_in_progress != symbol_lastP) | |
638 | { | |
639 | symbol_remove (def_symbol_in_progress, &symbol_rootP, &symbol_lastP); | |
640 | symbol_append (def_symbol_in_progress, symbol_lastP, &symbol_rootP, &symbol_lastP); | |
641 | } | |
642 | } | |
643 | } | |
644 | ||
645 | if (SF_GET_TAG (def_symbol_in_progress)) | |
646 | { | |
647 | symbolS *oldtag; | |
648 | ||
649 | oldtag = symbol_find_base (S_GET_NAME (def_symbol_in_progress), | |
650 | DO_NOT_STRIP); | |
651 | if (oldtag == NULL || ! SF_GET_TAG (oldtag)) | |
652 | tag_insert (S_GET_NAME (def_symbol_in_progress), | |
653 | def_symbol_in_progress); | |
654 | } | |
655 | ||
656 | if (SF_GET_FUNCTION (def_symbol_in_progress)) | |
657 | { | |
658 | know (sizeof (def_symbol_in_progress) <= sizeof (long)); | |
659 | set_function (def_symbol_in_progress); | |
660 | SF_SET_PROCESS (def_symbol_in_progress); | |
661 | ||
662 | if (symbolP == NULL) | |
663 | { | |
664 | /* That is, if this is the first time we've seen the | |
665 | function... */ | |
666 | symbol_table_insert (def_symbol_in_progress); | |
667 | } /* definition follows debug */ | |
668 | } /* Create the line number entry pointing to the function being defined */ | |
669 | ||
670 | def_symbol_in_progress = NULL; | |
671 | demand_empty_rest_of_line (); | |
672 | } | |
673 | ||
674 | static void | |
675 | obj_coff_dim (ignore) | |
676 | int ignore; | |
677 | { | |
678 | int dim_index; | |
679 | ||
680 | if (def_symbol_in_progress == NULL) | |
681 | { | |
682 | as_warn (".dim pseudo-op used outside of .def/.endef: ignored."); | |
683 | demand_empty_rest_of_line (); | |
684 | return; | |
685 | } /* if not inside .def/.endef */ | |
686 | ||
687 | S_SET_NUMBER_AUXILIARY (def_symbol_in_progress, 1); | |
688 | ||
689 | for (dim_index = 0; dim_index < DIMNUM; dim_index++) | |
690 | { | |
691 | SKIP_WHITESPACES (); | |
692 | SA_SET_SYM_DIMEN (def_symbol_in_progress, dim_index, | |
693 | get_absolute_expression ()); | |
694 | ||
695 | switch (*input_line_pointer) | |
696 | { | |
697 | case ',': | |
698 | input_line_pointer++; | |
699 | break; | |
700 | ||
701 | default: | |
702 | as_warn ("badly formed .dim directive ignored"); | |
703 | /* intentional fallthrough */ | |
704 | case '\n': | |
705 | case ';': | |
706 | dim_index = DIMNUM; | |
707 | break; | |
708 | } | |
709 | } | |
710 | ||
711 | demand_empty_rest_of_line (); | |
712 | } | |
713 | ||
714 | static void | |
715 | obj_coff_line (ignore) | |
716 | int ignore; | |
717 | { | |
718 | int this_base; | |
719 | ||
720 | if (def_symbol_in_progress == NULL) | |
721 | { | |
722 | /* Probably stabs-style line? */ | |
723 | obj_coff_ln (0); | |
724 | return; | |
725 | } | |
726 | ||
727 | this_base = get_absolute_expression (); | |
728 | if (!strcmp (".bf", S_GET_NAME (def_symbol_in_progress))) | |
729 | coff_line_base = this_base; | |
730 | ||
731 | S_SET_NUMBER_AUXILIARY (def_symbol_in_progress, 1); | |
732 | SA_SET_SYM_LNNO (def_symbol_in_progress, coff_line_base); | |
733 | ||
734 | demand_empty_rest_of_line (); | |
735 | ||
736 | #ifndef NO_LISTING | |
737 | if (strcmp (".bf", S_GET_NAME (def_symbol_in_progress)) == 0) | |
738 | { | |
739 | extern int listing; | |
740 | ||
741 | if (listing) | |
742 | listing_source_line ((unsigned int) coff_line_base); | |
743 | } | |
744 | #endif | |
745 | } | |
746 | ||
747 | static void | |
748 | obj_coff_size (ignore) | |
749 | int ignore; | |
750 | { | |
751 | if (def_symbol_in_progress == NULL) | |
752 | { | |
753 | as_warn (".size pseudo-op used outside of .def/.endef ignored."); | |
754 | demand_empty_rest_of_line (); | |
755 | return; | |
756 | } /* if not inside .def/.endef */ | |
757 | ||
758 | S_SET_NUMBER_AUXILIARY (def_symbol_in_progress, 1); | |
759 | SA_SET_SYM_SIZE (def_symbol_in_progress, get_absolute_expression ()); | |
760 | demand_empty_rest_of_line (); | |
761 | } | |
762 | ||
763 | static void | |
764 | obj_coff_scl (ignore) | |
765 | int ignore; | |
766 | { | |
767 | if (def_symbol_in_progress == NULL) | |
768 | { | |
769 | as_warn (".scl pseudo-op used outside of .def/.endef ignored."); | |
770 | demand_empty_rest_of_line (); | |
771 | return; | |
772 | } /* if not inside .def/.endef */ | |
773 | ||
774 | S_SET_STORAGE_CLASS (def_symbol_in_progress, get_absolute_expression ()); | |
775 | demand_empty_rest_of_line (); | |
776 | } | |
777 | ||
778 | static void | |
779 | obj_coff_tag (ignore) | |
780 | int ignore; | |
781 | { | |
782 | char *symbol_name; | |
783 | char name_end; | |
784 | ||
785 | if (def_symbol_in_progress == NULL) | |
786 | { | |
787 | as_warn (".tag pseudo-op used outside of .def/.endef ignored."); | |
788 | demand_empty_rest_of_line (); | |
789 | return; | |
790 | } | |
791 | ||
792 | S_SET_NUMBER_AUXILIARY (def_symbol_in_progress, 1); | |
793 | symbol_name = input_line_pointer; | |
794 | name_end = get_symbol_end (); | |
795 | ||
796 | #ifdef tc_canonicalize_symbol_name | |
797 | symbol_name = tc_canonicalize_symbol_name (symbol_name); | |
798 | #endif | |
799 | ||
800 | /* Assume that the symbol referred to by .tag is always defined. | |
801 | This was a bad assumption. I've added find_or_make. xoxorich. */ | |
802 | SA_SET_SYM_TAGNDX (def_symbol_in_progress, | |
803 | tag_find_or_make (symbol_name)); | |
804 | if (SA_GET_SYM_TAGNDX (def_symbol_in_progress) == 0L) | |
805 | { | |
806 | as_warn ("tag not found for .tag %s", symbol_name); | |
807 | } /* not defined */ | |
808 | ||
809 | SF_SET_TAGGED (def_symbol_in_progress); | |
810 | *input_line_pointer = name_end; | |
811 | ||
812 | demand_empty_rest_of_line (); | |
813 | } | |
814 | ||
815 | static void | |
816 | obj_coff_type (ignore) | |
817 | int ignore; | |
818 | { | |
819 | if (def_symbol_in_progress == NULL) | |
820 | { | |
821 | as_warn (".type pseudo-op used outside of .def/.endef ignored."); | |
822 | demand_empty_rest_of_line (); | |
823 | return; | |
824 | } /* if not inside .def/.endef */ | |
825 | ||
826 | S_SET_DATA_TYPE (def_symbol_in_progress, get_absolute_expression ()); | |
827 | ||
828 | if (ISFCN (S_GET_DATA_TYPE (def_symbol_in_progress)) && | |
829 | S_GET_STORAGE_CLASS (def_symbol_in_progress) != C_TPDEF) | |
830 | { | |
831 | SF_SET_FUNCTION (def_symbol_in_progress); | |
832 | } /* is a function */ | |
833 | ||
834 | demand_empty_rest_of_line (); | |
835 | } | |
836 | ||
837 | static void | |
838 | obj_coff_val (ignore) | |
839 | int ignore; | |
840 | { | |
841 | if (def_symbol_in_progress == NULL) | |
842 | { | |
843 | as_warn (".val pseudo-op used outside of .def/.endef ignored."); | |
844 | demand_empty_rest_of_line (); | |
845 | return; | |
846 | } /* if not inside .def/.endef */ | |
847 | ||
848 | if (is_name_beginner (*input_line_pointer)) | |
849 | { | |
850 | char *symbol_name = input_line_pointer; | |
851 | char name_end = get_symbol_end (); | |
852 | ||
853 | #ifdef tc_canonicalize_symbol_name | |
854 | symbol_name = tc_canonicalize_symbol_name (symbol_name); | |
855 | #endif | |
856 | if (!strcmp (symbol_name, ".")) | |
857 | { | |
858 | def_symbol_in_progress->sy_frag = frag_now; | |
859 | S_SET_VALUE (def_symbol_in_progress, (valueT) frag_now_fix ()); | |
860 | /* If the .val is != from the .def (e.g. statics) */ | |
861 | } | |
862 | else if (strcmp (S_GET_NAME (def_symbol_in_progress), symbol_name)) | |
863 | { | |
864 | def_symbol_in_progress->sy_value.X_op = O_symbol; | |
865 | def_symbol_in_progress->sy_value.X_add_symbol = | |
866 | symbol_find_or_make (symbol_name); | |
867 | def_symbol_in_progress->sy_value.X_op_symbol = NULL; | |
868 | def_symbol_in_progress->sy_value.X_add_number = 0; | |
869 | ||
870 | /* If the segment is undefined when the forward reference is | |
871 | resolved, then copy the segment id from the forward | |
872 | symbol. */ | |
873 | SF_SET_GET_SEGMENT (def_symbol_in_progress); | |
874 | } | |
875 | /* Otherwise, it is the name of a non debug symbol and its value will be calculated later. */ | |
876 | *input_line_pointer = name_end; | |
877 | } | |
878 | else | |
879 | { | |
880 | S_SET_VALUE (def_symbol_in_progress, get_absolute_expression ()); | |
881 | } /* if symbol based */ | |
882 | ||
883 | demand_empty_rest_of_line (); | |
884 | } | |
885 | ||
886 | void | |
887 | coff_obj_read_begin_hook () | |
888 | { | |
889 | /* These had better be the same. Usually 18 bytes. */ | |
890 | #ifndef BFD_HEADERS | |
891 | know (sizeof (SYMENT) == sizeof (AUXENT)); | |
892 | know (SYMESZ == AUXESZ); | |
893 | #endif | |
894 | tag_init (); | |
895 | } | |
896 | ||
897 | ||
898 | symbolS *coff_last_function; | |
899 | static symbolS *coff_last_bf; | |
900 | ||
901 | void | |
902 | coff_frob_symbol (symp, punt) | |
903 | symbolS *symp; | |
904 | int *punt; | |
905 | { | |
906 | static symbolS *last_tagP; | |
907 | static stack *block_stack; | |
908 | static symbolS *set_end; | |
909 | symbolS *next_set_end = NULL; | |
910 | ||
911 | if (symp == &abs_symbol) | |
912 | { | |
913 | *punt = 1; | |
914 | return; | |
915 | } | |
916 | ||
917 | if (current_lineno_sym) | |
918 | coff_add_linesym ((symbolS *) 0); | |
919 | ||
920 | if (!block_stack) | |
921 | block_stack = stack_init (512, sizeof (symbolS*)); | |
922 | ||
923 | if (!S_IS_DEFINED (symp) && S_GET_STORAGE_CLASS (symp) != C_STAT) | |
924 | S_SET_STORAGE_CLASS (symp, C_EXT); | |
925 | ||
926 | if (!SF_GET_DEBUG (symp)) | |
927 | { | |
928 | symbolS *real; | |
929 | if (!SF_GET_LOCAL (symp) | |
930 | && !SF_GET_STATICS (symp) | |
931 | && (real = symbol_find_base (S_GET_NAME (symp), DO_NOT_STRIP)) | |
932 | && real != symp) | |
933 | { | |
934 | c_symbol_merge (symp, real); | |
935 | *punt = 1; | |
936 | } | |
937 | if (!S_IS_DEFINED (symp) && !SF_GET_LOCAL (symp)) | |
938 | { | |
939 | assert (S_GET_VALUE (symp) == 0); | |
940 | S_SET_EXTERNAL (symp); | |
941 | } | |
942 | else if (S_GET_STORAGE_CLASS (symp) == C_NULL) | |
943 | { | |
944 | if (S_GET_SEGMENT (symp) == text_section | |
945 | && symp != seg_info (text_section)->sym) | |
946 | S_SET_STORAGE_CLASS (symp, C_LABEL); | |
947 | else | |
948 | S_SET_STORAGE_CLASS (symp, C_STAT); | |
949 | } | |
950 | if (SF_GET_PROCESS (symp)) | |
951 | { | |
952 | if (S_GET_STORAGE_CLASS (symp) == C_BLOCK) | |
953 | { | |
954 | if (!strcmp (S_GET_NAME (symp), ".bb")) | |
955 | stack_push (block_stack, (char *) &symp); | |
956 | else | |
957 | { | |
958 | symbolS *begin; | |
959 | begin = *(symbolS **) stack_pop (block_stack); | |
960 | if (begin == 0) | |
961 | as_warn ("mismatched .eb"); | |
962 | else | |
963 | next_set_end = begin; | |
964 | } | |
965 | } | |
966 | if (coff_last_function == 0 && SF_GET_FUNCTION (symp)) | |
967 | { | |
968 | union internal_auxent *auxp; | |
969 | coff_last_function = symp; | |
970 | if (S_GET_NUMBER_AUXILIARY (symp) < 1) | |
971 | S_SET_NUMBER_AUXILIARY (symp, 1); | |
972 | auxp = &coffsymbol (symp->bsym)->native[1].u.auxent; | |
973 | memset (auxp->x_sym.x_fcnary.x_ary.x_dimen, 0, | |
974 | sizeof (auxp->x_sym.x_fcnary.x_ary.x_dimen)); | |
975 | } | |
976 | if (S_GET_STORAGE_CLASS (symp) == C_EFCN) | |
977 | { | |
978 | if (coff_last_function == 0) | |
979 | as_fatal ("C_EFCN symbol out of scope"); | |
980 | SA_SET_SYM_FSIZE (coff_last_function, | |
981 | (long) (S_GET_VALUE (symp) | |
982 | - S_GET_VALUE (coff_last_function))); | |
983 | next_set_end = coff_last_function; | |
984 | coff_last_function = 0; | |
985 | } | |
986 | } | |
987 | if (S_IS_EXTERNAL (symp)) | |
988 | S_SET_STORAGE_CLASS (symp, C_EXT); | |
989 | else if (SF_GET_LOCAL (symp)) | |
990 | *punt = 1; | |
991 | ||
992 | if (SF_GET_FUNCTION (symp)) | |
993 | symp->bsym->flags |= BSF_FUNCTION; | |
994 | ||
995 | /* more ... */ | |
996 | } | |
997 | ||
998 | if (SF_GET_TAG (symp)) | |
999 | last_tagP = symp; | |
1000 | else if (S_GET_STORAGE_CLASS (symp) == C_EOS) | |
1001 | next_set_end = last_tagP; | |
1002 | ||
1003 | #ifdef OBJ_XCOFF | |
1004 | /* This is pretty horrible, but we have to set *punt correctly in | |
1005 | order to call SA_SET_SYM_ENDNDX correctly. */ | |
1006 | if (! symp->sy_used_in_reloc | |
1007 | && ((symp->bsym->flags & BSF_SECTION_SYM) != 0 | |
1008 | || (! S_IS_EXTERNAL (symp) | |
1009 | && ! symp->sy_tc.output | |
1010 | && S_GET_STORAGE_CLASS (symp) != C_FILE))) | |
1011 | *punt = 1; | |
1012 | #endif | |
1013 | ||
1014 | if (set_end != (symbolS *) NULL | |
1015 | && ! *punt | |
1016 | && ((symp->bsym->flags & BSF_NOT_AT_END) != 0 | |
1017 | || (S_IS_DEFINED (symp) | |
1018 | && ! S_IS_COMMON (symp) | |
1019 | && (! S_IS_EXTERNAL (symp) || SF_GET_FUNCTION (symp))))) | |
1020 | { | |
1021 | SA_SET_SYM_ENDNDX (set_end, symp); | |
1022 | set_end = NULL; | |
1023 | } | |
1024 | ||
1025 | if (next_set_end != NULL | |
1026 | && ! *punt) | |
1027 | set_end = next_set_end; | |
1028 | ||
1029 | if (! *punt | |
1030 | && S_GET_STORAGE_CLASS (symp) == C_FCN | |
1031 | && strcmp (S_GET_NAME (symp), ".bf") == 0) | |
1032 | { | |
1033 | if (coff_last_bf != NULL) | |
1034 | SA_SET_SYM_ENDNDX (coff_last_bf, symp); | |
1035 | coff_last_bf = symp; | |
1036 | } | |
1037 | ||
1038 | if (coffsymbol (symp->bsym)->lineno) | |
1039 | { | |
1040 | int i; | |
1041 | struct line_no *lptr; | |
1042 | alent *l; | |
1043 | ||
1044 | lptr = (struct line_no *) coffsymbol (symp->bsym)->lineno; | |
1045 | for (i = 0; lptr; lptr = lptr->next) | |
1046 | i++; | |
1047 | lptr = (struct line_no *) coffsymbol (symp->bsym)->lineno; | |
1048 | ||
1049 | /* We need i entries for line numbers, plus 1 for the first | |
1050 | entry which BFD will override, plus 1 for the last zero | |
1051 | entry (a marker for BFD). */ | |
1052 | l = (alent *) xmalloc ((i + 2) * sizeof (alent)); | |
1053 | coffsymbol (symp->bsym)->lineno = l; | |
1054 | l[i + 1].line_number = 0; | |
1055 | l[i + 1].u.sym = NULL; | |
1056 | for (; i > 0; i--) | |
1057 | { | |
1058 | if (lptr->frag) | |
1059 | lptr->l.u.offset += lptr->frag->fr_address; | |
1060 | l[i] = lptr->l; | |
1061 | lptr = lptr->next; | |
1062 | } | |
1063 | } | |
1064 | } | |
1065 | ||
1066 | void | |
1067 | coff_adjust_section_syms (abfd, sec, x) | |
1068 | bfd *abfd; | |
1069 | asection *sec; | |
1070 | PTR x; | |
1071 | { | |
1072 | symbolS *secsym; | |
1073 | segment_info_type *seginfo = seg_info (sec); | |
1074 | int nlnno, nrelocs = 0; | |
1075 | ||
1076 | /* RS/6000 gas creates a .debug section manually in ppc_frob_file in | |
1077 | tc-ppc.c. Do not get confused by it. */ | |
1078 | if (seginfo == NULL) | |
1079 | return; | |
1080 | ||
1081 | if (!strcmp (sec->name, ".text")) | |
1082 | nlnno = coff_n_line_nos; | |
1083 | else | |
1084 | nlnno = 0; | |
1085 | { | |
1086 | /* @@ Hope that none of the fixups expand to more than one reloc | |
1087 | entry... */ | |
1088 | fixS *fixp = seginfo->fix_root; | |
1089 | while (fixp) | |
1090 | { | |
1091 | fixp = fixp->fx_next; | |
1092 | nrelocs++; | |
1093 | } | |
1094 | } | |
1095 | if (bfd_get_section_size_before_reloc (sec) == 0 | |
1096 | && nrelocs == 0 | |
1097 | && nlnno == 0 | |
1098 | && sec != text_section | |
1099 | && sec != data_section | |
1100 | && sec != bss_section) | |
1101 | return; | |
1102 | secsym = section_symbol (sec); | |
1103 | SA_SET_SCN_NRELOC (secsym, nrelocs); | |
1104 | SA_SET_SCN_NLINNO (secsym, nlnno); | |
1105 | } | |
1106 | ||
1107 | void | |
1108 | coff_frob_file () | |
1109 | { | |
1110 | bfd_map_over_sections (stdoutput, coff_adjust_section_syms, (char*) 0); | |
1111 | } | |
1112 | ||
1113 | /* | |
1114 | * implement the .section pseudo op: | |
1115 | * .section name {, "flags"} | |
1116 | * ^ ^ | |
1117 | * | +--- optional flags: 'b' for bss | |
1118 | * | 'i' for info | |
1119 | * +-- section name 'l' for lib | |
1120 | * 'n' for noload | |
1121 | * 'o' for over | |
1122 | * 'w' for data | |
1123 | * 'd' (apparently m88k for data) | |
1124 | * 'x' for text | |
1125 | * 'r' for read-only data | |
1126 | * But if the argument is not a quoted string, treat it as a | |
1127 | * subsegment number. | |
1128 | */ | |
1129 | ||
1130 | void | |
1131 | obj_coff_section (ignore) | |
1132 | int ignore; | |
1133 | { | |
1134 | /* Strip out the section name */ | |
1135 | char *section_name; | |
1136 | char c; | |
1137 | char *name; | |
1138 | unsigned int exp; | |
1139 | flagword flags; | |
1140 | asection *sec; | |
1141 | ||
1142 | if (flag_mri) | |
1143 | { | |
1144 | char type; | |
1145 | ||
1146 | s_mri_sect (&type); | |
1147 | return; | |
1148 | } | |
1149 | ||
1150 | section_name = input_line_pointer; | |
1151 | c = get_symbol_end (); | |
1152 | ||
1153 | name = xmalloc (input_line_pointer - section_name + 1); | |
1154 | strcpy (name, section_name); | |
1155 | ||
1156 | *input_line_pointer = c; | |
1157 | ||
1158 | SKIP_WHITESPACE (); | |
1159 | ||
1160 | exp = 0; | |
1161 | flags = SEC_NO_FLAGS; | |
1162 | ||
1163 | if (*input_line_pointer == ',') | |
1164 | { | |
1165 | ++input_line_pointer; | |
1166 | SKIP_WHITESPACE (); | |
1167 | if (*input_line_pointer != '"') | |
1168 | exp = get_absolute_expression (); | |
1169 | else | |
1170 | { | |
1171 | ++input_line_pointer; | |
1172 | while (*input_line_pointer != '"' | |
1173 | && ! is_end_of_line[(unsigned char) *input_line_pointer]) | |
1174 | { | |
1175 | switch (*input_line_pointer) | |
1176 | { | |
1177 | case 'b': flags |= SEC_ALLOC; flags &=~ SEC_LOAD; break; | |
1178 | case 'n': flags &=~ SEC_LOAD; break; | |
1179 | case 'd': | |
1180 | case 'w': flags &=~ SEC_READONLY; break; | |
1181 | case 'x': flags |= SEC_CODE; break; | |
1182 | case 'r': flags |= SEC_READONLY; break; | |
1183 | ||
1184 | case 'i': /* STYP_INFO */ | |
1185 | case 'l': /* STYP_LIB */ | |
1186 | case 'o': /* STYP_OVER */ | |
1187 | as_warn ("unsupported section attribute '%c'", | |
1188 | *input_line_pointer); | |
1189 | break; | |
1190 | ||
1191 | default: | |
1192 | as_warn("unknown section attribute '%c'", | |
1193 | *input_line_pointer); | |
1194 | break; | |
1195 | } | |
1196 | ++input_line_pointer; | |
1197 | } | |
1198 | if (*input_line_pointer == '"') | |
1199 | ++input_line_pointer; | |
1200 | } | |
1201 | } | |
1202 | ||
1203 | sec = subseg_new (name, (subsegT) exp); | |
1204 | ||
1205 | if (flags != SEC_NO_FLAGS) | |
1206 | { | |
1207 | if (! bfd_set_section_flags (stdoutput, sec, flags)) | |
1208 | as_warn ("error setting flags for \"%s\": %s", | |
1209 | bfd_section_name (stdoutput, sec), | |
1210 | bfd_errmsg (bfd_get_error ())); | |
1211 | } | |
1212 | ||
1213 | demand_empty_rest_of_line (); | |
1214 | } | |
1215 | ||
1216 | void | |
1217 | coff_adjust_symtab () | |
1218 | { | |
1219 | if (symbol_rootP == NULL | |
1220 | || S_GET_STORAGE_CLASS (symbol_rootP) != C_FILE) | |
1221 | c_dot_file_symbol ("fake"); | |
1222 | } | |
1223 | ||
1224 | void | |
1225 | coff_frob_section (sec) | |
1226 | segT sec; | |
1227 | { | |
1228 | segT strsec; | |
1229 | char *p; | |
1230 | fragS *fragp; | |
1231 | bfd_vma size, n_entries, mask; | |
1232 | ||
1233 | /* The COFF back end in BFD requires that all section sizes be | |
1234 | rounded up to multiples of the corresponding section alignments. | |
1235 | Seems kinda silly to me, but that's the way it is. */ | |
1236 | size = bfd_get_section_size_before_reloc (sec); | |
1237 | mask = ((bfd_vma) 1 << (bfd_vma) sec->alignment_power) - 1; | |
1238 | if (size & mask) | |
1239 | { | |
1240 | size = (size + mask) & ~mask; | |
1241 | bfd_set_section_size (stdoutput, sec, size); | |
1242 | } | |
1243 | ||
1244 | /* If the section size is non-zero, the section symbol needs an aux | |
1245 | entry associated with it, indicating the size. We don't know | |
1246 | all the values yet; coff_frob_symbol will fill them in later. */ | |
1247 | if (size != 0 | |
1248 | || sec == text_section | |
1249 | || sec == data_section | |
1250 | || sec == bss_section) | |
1251 | { | |
1252 | symbolS *secsym = section_symbol (sec); | |
1253 | ||
1254 | S_SET_STORAGE_CLASS (secsym, C_STAT); | |
1255 | S_SET_NUMBER_AUXILIARY (secsym, 1); | |
1256 | SF_SET_STATICS (secsym); | |
1257 | SA_SET_SCN_SCNLEN (secsym, size); | |
1258 | } | |
1259 | ||
1260 | /* @@ these should be in a "stabs.h" file, or maybe as.h */ | |
1261 | #ifndef STAB_SECTION_NAME | |
1262 | #define STAB_SECTION_NAME ".stab" | |
1263 | #endif | |
1264 | #ifndef STAB_STRING_SECTION_NAME | |
1265 | #define STAB_STRING_SECTION_NAME ".stabstr" | |
1266 | #endif | |
1267 | if (strcmp (STAB_STRING_SECTION_NAME, sec->name)) | |
1268 | return; | |
1269 | ||
1270 | strsec = sec; | |
1271 | sec = subseg_get (STAB_SECTION_NAME, 0); | |
1272 | /* size is already rounded up, since other section will be listed first */ | |
1273 | size = bfd_get_section_size_before_reloc (strsec); | |
1274 | ||
1275 | n_entries = bfd_get_section_size_before_reloc (sec) / 12 - 1; | |
1276 | ||
1277 | /* Find first non-empty frag. It should be large enough. */ | |
1278 | fragp = seg_info (sec)->frchainP->frch_root; | |
1279 | while (fragp && fragp->fr_fix == 0) | |
1280 | fragp = fragp->fr_next; | |
1281 | assert (fragp != 0 && fragp->fr_fix >= 12); | |
1282 | ||
1283 | /* Store the values. */ | |
1284 | p = fragp->fr_literal; | |
1285 | bfd_h_put_16 (stdoutput, n_entries, (bfd_byte *) p + 6); | |
1286 | bfd_h_put_32 (stdoutput, size, (bfd_byte *) p + 8); | |
1287 | } | |
1288 | ||
1289 | void | |
1290 | obj_coff_init_stab_section (seg) | |
1291 | segT seg; | |
1292 | { | |
1293 | char *file; | |
1294 | char *p; | |
1295 | char *stabstr_name; | |
1296 | unsigned int stroff; | |
1297 | ||
1298 | /* Make space for this first symbol. */ | |
1299 | p = frag_more (12); | |
1300 | /* Zero it out. */ | |
1301 | memset (p, 0, 12); | |
1302 | as_where (&file, (unsigned int *) NULL); | |
1303 | stabstr_name = (char *) alloca (strlen (seg->name) + 4); | |
1304 | strcpy (stabstr_name, seg->name); | |
1305 | strcat (stabstr_name, "str"); | |
1306 | stroff = get_stab_string_offset (file, stabstr_name); | |
1307 | know (stroff == 1); | |
1308 | md_number_to_chars (p, stroff, 4); | |
1309 | } | |
1310 | ||
1311 | #ifdef DEBUG | |
1312 | /* for debugging */ | |
1313 | const char * | |
1314 | s_get_name (s) | |
1315 | symbolS *s; | |
1316 | { | |
1317 | return ((s == NULL) ? "(NULL)" : S_GET_NAME (s)); | |
1318 | } | |
1319 | ||
1320 | void | |
1321 | symbol_dump () | |
1322 | { | |
1323 | symbolS *symbolP; | |
1324 | ||
1325 | for (symbolP = symbol_rootP; symbolP; symbolP = symbol_next (symbolP)) | |
1326 | { | |
1327 | printf("0x%lx: \"%s\" type = %ld, class = %d, segment = %d\n", | |
1328 | (unsigned long) symbolP, | |
1329 | S_GET_NAME(symbolP), | |
1330 | (long) S_GET_DATA_TYPE(symbolP), | |
1331 | S_GET_STORAGE_CLASS(symbolP), | |
1332 | (int) S_GET_SEGMENT(symbolP)); | |
1333 | } | |
1334 | } | |
1335 | ||
1336 | #endif /* DEBUG */ | |
1337 | ||
1338 | #else /* not BFD_ASSEMBLER */ | |
1339 | ||
1340 | #include "frags.h" | |
1341 | /* This is needed because we include internal bfd things. */ | |
1342 | #include <time.h> | |
1343 | ||
1344 | #include "libbfd.h" | |
1345 | #include "libcoff.h" | |
1346 | ||
1347 | #ifdef TE_PE | |
1348 | #include "coff/pe.h" | |
1349 | #endif | |
1350 | ||
1351 | /* The NOP_OPCODE is for the alignment fill value. Fill with nop so | |
1352 | that we can stick sections together without causing trouble. */ | |
1353 | #ifndef NOP_OPCODE | |
1354 | #define NOP_OPCODE 0x00 | |
1355 | #endif | |
1356 | ||
1357 | /* The zeroes if symbol name is longer than 8 chars */ | |
1358 | #define S_SET_ZEROES(s,v) ((s)->sy_symbol.ost_entry.n_zeroes = (v)) | |
1359 | ||
1360 | #define MIN(a,b) ((a) < (b)? (a) : (b)) | |
1361 | /* This vector is used to turn an internal segment into a section # | |
1362 | suitable for insertion into a coff symbol table | |
1363 | */ | |
1364 | ||
1365 | const short seg_N_TYPE[] = | |
1366 | { /* in: segT out: N_TYPE bits */ | |
1367 | C_ABS_SECTION, | |
1368 | 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, | |
1369 | 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, | |
1370 | 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, | |
1371 | 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, | |
1372 | C_UNDEF_SECTION, /* SEG_UNKNOWN */ | |
1373 | C_UNDEF_SECTION, /* SEG_GOOF */ | |
1374 | C_UNDEF_SECTION, /* SEG_EXPR */ | |
1375 | C_DEBUG_SECTION, /* SEG_DEBUG */ | |
1376 | C_NTV_SECTION, /* SEG_NTV */ | |
1377 | C_PTV_SECTION, /* SEG_PTV */ | |
1378 | C_REGISTER_SECTION, /* SEG_REGISTER */ | |
1379 | }; | |
1380 | ||
1381 | int function_lineoff = -1; /* Offset in line#s where the last function | |
1382 | started (the odd entry for line #0) */ | |
1383 | ||
1384 | /* structure used to keep the filenames which | |
1385 | are too long around so that we can stick them | |
1386 | into the string table */ | |
1387 | struct filename_list | |
1388 | { | |
1389 | char *filename; | |
1390 | struct filename_list *next; | |
1391 | }; | |
1392 | ||
1393 | static struct filename_list *filename_list_head; | |
1394 | static struct filename_list *filename_list_tail; | |
1395 | ||
1396 | static symbolS *last_line_symbol; | |
1397 | ||
1398 | /* Add 4 to the real value to get the index and compensate the | |
1399 | negatives. This vector is used by S_GET_SEGMENT to turn a coff | |
1400 | section number into a segment number | |
1401 | */ | |
1402 | static symbolS *previous_file_symbol; | |
1403 | void c_symbol_merge (); | |
1404 | static int line_base; | |
1405 | ||
1406 | symbolS *c_section_symbol (); | |
1407 | bfd *abfd; | |
1408 | ||
1409 | static void fixup_segment PARAMS ((segment_info_type *segP, | |
1410 | segT this_segment_type)); | |
1411 | ||
1412 | ||
1413 | static void fixup_mdeps PARAMS ((fragS *, | |
1414 | object_headers *, | |
1415 | segT)); | |
1416 | ||
1417 | ||
1418 | static void fill_section PARAMS ((bfd * abfd, | |
1419 | object_headers *, | |
1420 | unsigned long *)); | |
1421 | ||
1422 | ||
1423 | static int c_line_new PARAMS ((symbolS * symbol, long paddr, | |
1424 | int line_number, | |
1425 | fragS * frag)); | |
1426 | ||
1427 | ||
1428 | static void w_symbols PARAMS ((bfd * abfd, char *where, | |
1429 | symbolS * symbol_rootP)); | |
1430 | ||
1431 | static void adjust_stab_section PARAMS ((bfd *abfd, segT seg)); | |
1432 | ||
1433 | static void obj_coff_lcomm PARAMS ((int)); | |
1434 | static void obj_coff_text PARAMS ((int)); | |
1435 | static void obj_coff_data PARAMS ((int)); | |
1436 | static void obj_coff_bss PARAMS ((int)); | |
1437 | static void obj_coff_ident PARAMS ((int)); | |
1438 | void obj_coff_section PARAMS ((int)); | |
1439 | ||
1440 | /* Section stuff | |
1441 | ||
1442 | We allow more than just the standard 3 sections, infact, we allow | |
1443 | 40 sections, (though the usual three have to be there). | |
1444 | ||
1445 | This structure performs the mappings for us: | |
1446 | */ | |
1447 | ||
1448 | ||
1449 | typedef struct | |
1450 | { | |
1451 | segT seg_t; | |
1452 | int i; | |
1453 | } seg_info_type; | |
1454 | ||
1455 | static const seg_info_type seg_info_off_by_4[] = | |
1456 | { | |
1457 | {SEG_PTV, }, | |
1458 | {SEG_NTV, }, | |
1459 | {SEG_DEBUG, }, | |
1460 | {SEG_ABSOLUTE, }, | |
1461 | {SEG_UNKNOWN, }, | |
1462 | {SEG_E0}, {SEG_E1}, {SEG_E2}, {SEG_E3}, {SEG_E4}, | |
1463 | {SEG_E5}, {SEG_E6}, {SEG_E7}, {SEG_E8}, {SEG_E9}, | |
1464 | {SEG_E10},{SEG_E11},{SEG_E12},{SEG_E13},{SEG_E14}, | |
1465 | {SEG_E15},{SEG_E16},{SEG_E17},{SEG_E18},{SEG_E19}, | |
1466 | {SEG_E20},{SEG_E21},{SEG_E22},{SEG_E23},{SEG_E24}, | |
1467 | {SEG_E25},{SEG_E26},{SEG_E27},{SEG_E28},{SEG_E29}, | |
1468 | {SEG_E30},{SEG_E31},{SEG_E32},{SEG_E33},{SEG_E34}, | |
1469 | {SEG_E35},{SEG_E36},{SEG_E37},{SEG_E38},{SEG_E39}, | |
1470 | {(segT)40}, | |
1471 | {(segT)41}, | |
1472 | {(segT)42}, | |
1473 | {(segT)43}, | |
1474 | {(segT)44}, | |
1475 | {(segT)45}, | |
1476 | {(segT)0}, | |
1477 | {(segT)0}, | |
1478 | {(segT)0}, | |
1479 | {SEG_REGISTER} | |
1480 | }; | |
1481 | ||
1482 | ||
1483 | ||
1484 | #define SEG_INFO_FROM_SECTION_NUMBER(x) (seg_info_off_by_4[(x)+4]) | |
1485 | ||
1486 | static relax_addressT | |
1487 | relax_align (address, alignment) | |
1488 | relax_addressT address; | |
1489 | long alignment; | |
1490 | { | |
1491 | relax_addressT mask; | |
1492 | relax_addressT new_address; | |
1493 | ||
1494 | mask = ~((~0) << alignment); | |
1495 | new_address = (address + mask) & (~mask); | |
1496 | return (new_address - address); | |
1497 | } | |
1498 | ||
1499 | ||
1500 | segT | |
1501 | s_get_segment (x) | |
1502 | symbolS * x; | |
1503 | { | |
1504 | return SEG_INFO_FROM_SECTION_NUMBER (x->sy_symbol.ost_entry.n_scnum).seg_t; | |
1505 | } | |
1506 | ||
1507 | ||
1508 | ||
1509 | /* calculate the size of the frag chain and fill in the section header | |
1510 | to contain all of it, also fill in the addr of the sections */ | |
1511 | static unsigned int | |
1512 | size_section (abfd, idx) | |
1513 | bfd * abfd; | |
1514 | unsigned int idx; | |
1515 | { | |
1516 | ||
1517 | unsigned int size = 0; | |
1518 | fragS *frag = segment_info[idx].frchainP->frch_root; | |
1519 | while (frag) | |
1520 | { | |
1521 | size = frag->fr_address; | |
1522 | if (frag->fr_address != size) | |
1523 | { | |
1524 | fprintf (stderr, "Out of step\n"); | |
1525 | size = frag->fr_address; | |
1526 | } | |
1527 | ||
1528 | switch (frag->fr_type) | |
1529 | { | |
1530 | #ifdef TC_COFF_SIZEMACHDEP | |
1531 | case rs_machine_dependent: | |
1532 | size += TC_COFF_SIZEMACHDEP (frag); | |
1533 | break; | |
1534 | #endif | |
1535 | case rs_space: | |
1536 | assert (frag->fr_symbol == 0); | |
1537 | case rs_fill: | |
1538 | case rs_org: | |
1539 | size += frag->fr_fix; | |
1540 | size += frag->fr_offset * frag->fr_var; | |
1541 | break; | |
1542 | case rs_align: | |
1543 | case rs_align_code: | |
1544 | { | |
1545 | addressT off; | |
1546 | ||
1547 | size += frag->fr_fix; | |
1548 | off = relax_align (size, frag->fr_offset); | |
1549 | if (frag->fr_subtype != 0 && off > frag->fr_subtype) | |
1550 | off = 0; | |
1551 | size += off; | |
1552 | } | |
1553 | break; | |
1554 | default: | |
1555 | BAD_CASE (frag->fr_type); | |
1556 | break; | |
1557 | } | |
1558 | frag = frag->fr_next; | |
1559 | } | |
1560 | segment_info[idx].scnhdr.s_size = size; | |
1561 | return size; | |
1562 | } | |
1563 | ||
1564 | ||
1565 | static unsigned int | |
1566 | count_entries_in_chain (idx) | |
1567 | unsigned int idx; | |
1568 | { | |
1569 | unsigned int nrelocs; | |
1570 | fixS *fixup_ptr; | |
1571 | ||
1572 | /* Count the relocations */ | |
1573 | fixup_ptr = segment_info[idx].fix_root; | |
1574 | nrelocs = 0; | |
1575 | while (fixup_ptr != (fixS *) NULL) | |
1576 | { | |
1577 | if (fixup_ptr->fx_done == 0 && TC_COUNT_RELOC (fixup_ptr)) | |
1578 | { | |
1579 | #ifdef TC_A29K | |
1580 | if (fixup_ptr->fx_r_type == RELOC_CONSTH) | |
1581 | nrelocs += 2; | |
1582 | else | |
1583 | nrelocs++; | |
1584 | #else | |
1585 | nrelocs++; | |
1586 | #endif | |
1587 | } | |
1588 | ||
1589 | fixup_ptr = fixup_ptr->fx_next; | |
1590 | } | |
1591 | return nrelocs; | |
1592 | } | |
1593 | ||
1594 | #ifdef TE_AUX | |
1595 | ||
1596 | static int compare_external_relocs PARAMS ((const PTR, const PTR)); | |
1597 | ||
1598 | /* AUX's ld expects relocations to be sorted */ | |
1599 | static int | |
1600 | compare_external_relocs (x, y) | |
1601 | const PTR x; | |
1602 | const PTR y; | |
1603 | { | |
1604 | struct external_reloc *a = (struct external_reloc *) x; | |
1605 | struct external_reloc *b = (struct external_reloc *) y; | |
1606 | bfd_vma aadr = bfd_getb32 (a->r_vaddr); | |
1607 | bfd_vma badr = bfd_getb32 (b->r_vaddr); | |
1608 | return (aadr < badr ? -1 : badr < aadr ? 1 : 0); | |
1609 | } | |
1610 | ||
1611 | #endif | |
1612 | ||
1613 | /* output all the relocations for a section */ | |
1614 | void | |
1615 | do_relocs_for (abfd, h, file_cursor) | |
1616 | bfd * abfd; | |
1617 | object_headers * h; | |
1618 | unsigned long *file_cursor; | |
1619 | { | |
1620 | unsigned int nrelocs; | |
1621 | unsigned int idx; | |
1622 | unsigned long reloc_start = *file_cursor; | |
1623 | ||
1624 | for (idx = SEG_E0; idx < SEG_LAST; idx++) | |
1625 | { | |
1626 | if (segment_info[idx].scnhdr.s_name[0]) | |
1627 | { | |
1628 | struct external_reloc *ext_ptr; | |
1629 | struct external_reloc *external_reloc_vec; | |
1630 | unsigned int external_reloc_size; | |
1631 | unsigned int base = segment_info[idx].scnhdr.s_paddr; | |
1632 | fixS *fix_ptr = segment_info[idx].fix_root; | |
1633 | nrelocs = count_entries_in_chain (idx); | |
1634 | ||
1635 | if (nrelocs) | |
1636 | /* Bypass this stuff if no relocs. This also incidentally | |
1637 | avoids a SCO bug, where free(malloc(0)) tends to crash. */ | |
1638 | { | |
1639 | external_reloc_size = nrelocs * RELSZ; | |
1640 | external_reloc_vec = | |
1641 | (struct external_reloc *) malloc (external_reloc_size); | |
1642 | ||
1643 | ext_ptr = external_reloc_vec; | |
1644 | ||
1645 | /* Fill in the internal coff style reloc struct from the | |
1646 | internal fix list. */ | |
1647 | while (fix_ptr) | |
1648 | { | |
1649 | struct internal_reloc intr; | |
1650 | ||
1651 | /* Only output some of the relocations */ | |
1652 | if (fix_ptr->fx_done == 0 && TC_COUNT_RELOC (fix_ptr)) | |
1653 | { | |
1654 | #ifdef TC_RELOC_MANGLE | |
1655 | TC_RELOC_MANGLE (&segment_info[idx], fix_ptr, &intr, | |
1656 | base); | |
1657 | ||
1658 | #else | |
1659 | symbolS *dot; | |
1660 | symbolS *symbol_ptr = fix_ptr->fx_addsy; | |
1661 | ||
1662 | intr.r_type = TC_COFF_FIX2RTYPE (fix_ptr); | |
1663 | intr.r_vaddr = | |
1664 | base + fix_ptr->fx_frag->fr_address + fix_ptr->fx_where; | |
1665 | ||
1666 | #ifdef TC_KEEP_FX_OFFSET | |
1667 | intr.r_offset = fix_ptr->fx_offset; | |
1668 | #else | |
1669 | intr.r_offset = 0; | |
1670 | #endif | |
1671 | ||
1672 | while (symbol_ptr->sy_value.X_op == O_symbol | |
1673 | && (! S_IS_DEFINED (symbol_ptr) | |
1674 | || S_IS_COMMON (symbol_ptr))) | |
1675 | { | |
1676 | symbolS *n; | |
1677 | ||
1678 | /* We must avoid looping, as that can occur | |
1679 | with a badly written program. */ | |
1680 | n = symbol_ptr->sy_value.X_add_symbol; | |
1681 | if (n == symbol_ptr) | |
1682 | break; | |
1683 | symbol_ptr = n; | |
1684 | } | |
1685 | ||
1686 | /* Turn the segment of the symbol into an offset. */ | |
1687 | if (symbol_ptr) | |
1688 | { | |
1689 | resolve_symbol_value (symbol_ptr); | |
1690 | if (! symbol_ptr->sy_resolved) | |
1691 | { | |
1692 | char *file; | |
1693 | unsigned int line; | |
1694 | ||
1695 | if (expr_symbol_where (symbol_ptr, &file, &line)) | |
1696 | as_bad_where (file, line, | |
1697 | "unresolved relocation"); | |
1698 | else | |
1699 | as_bad ("bad relocation: symbol `%s' not in symbol table", | |
1700 | S_GET_NAME (symbol_ptr)); | |
1701 | } | |
1702 | dot = segment_info[S_GET_SEGMENT (symbol_ptr)].dot; | |
1703 | if (dot) | |
1704 | { | |
1705 | intr.r_symndx = dot->sy_number; | |
1706 | } | |
1707 | else | |
1708 | { | |
1709 | intr.r_symndx = symbol_ptr->sy_number; | |
1710 | } | |
1711 | ||
1712 | } | |
1713 | else | |
1714 | { | |
1715 | intr.r_symndx = -1; | |
1716 | } | |
1717 | #endif | |
1718 | ||
1719 | (void) bfd_coff_swap_reloc_out (abfd, &intr, ext_ptr); | |
1720 | ext_ptr++; | |
1721 | ||
1722 | #if defined(TC_A29K) | |
1723 | ||
1724 | /* The 29k has a special kludge for the high 16 bit | |
1725 | reloc. Two relocations are emited, R_IHIHALF, | |
1726 | and R_IHCONST. The second one doesn't contain a | |
1727 | symbol, but uses the value for offset. */ | |
1728 | ||
1729 | if (intr.r_type == R_IHIHALF) | |
1730 | { | |
1731 | /* now emit the second bit */ | |
1732 | intr.r_type = R_IHCONST; | |
1733 | intr.r_symndx = fix_ptr->fx_addnumber; | |
1734 | (void) bfd_coff_swap_reloc_out (abfd, &intr, ext_ptr); | |
1735 | ext_ptr++; | |
1736 | } | |
1737 | #endif | |
1738 | } | |
1739 | ||
1740 | fix_ptr = fix_ptr->fx_next; | |
1741 | } | |
1742 | ||
1743 | #ifdef TE_AUX | |
1744 | /* Sort the reloc table */ | |
1745 | qsort ((PTR) external_reloc_vec, nrelocs, | |
1746 | sizeof (struct external_reloc), compare_external_relocs); | |
1747 | #endif | |
1748 | ||
1749 | /* Write out the reloc table */ | |
1750 | bfd_write ((PTR) external_reloc_vec, 1, external_reloc_size, | |
1751 | abfd); | |
1752 | free (external_reloc_vec); | |
1753 | ||
1754 | /* Fill in section header info. */ | |
1755 | segment_info[idx].scnhdr.s_relptr = *file_cursor; | |
1756 | *file_cursor += external_reloc_size; | |
1757 | segment_info[idx].scnhdr.s_nreloc = nrelocs; | |
1758 | } | |
1759 | else | |
1760 | { | |
1761 | /* No relocs */ | |
1762 | segment_info[idx].scnhdr.s_relptr = 0; | |
1763 | } | |
1764 | } | |
1765 | } | |
1766 | /* Set relocation_size field in file headers */ | |
1767 | H_SET_RELOCATION_SIZE (h, *file_cursor - reloc_start, 0); | |
1768 | } | |
1769 | ||
1770 | ||
1771 | /* run through a frag chain and write out the data to go with it, fill | |
1772 | in the scnhdrs with the info on the file postions | |
1773 | */ | |
1774 | static void | |
1775 | fill_section (abfd, h, file_cursor) | |
1776 | bfd * abfd; | |
1777 | object_headers *h; | |
1778 | unsigned long *file_cursor; | |
1779 | { | |
1780 | ||
1781 | unsigned int i; | |
1782 | unsigned int paddr = 0; | |
1783 | ||
1784 | for (i = SEG_E0; i < SEG_UNKNOWN; i++) | |
1785 | { | |
1786 | unsigned int offset = 0; | |
1787 | struct internal_scnhdr *s = &(segment_info[i].scnhdr); | |
1788 | ||
1789 | PROGRESS (1); | |
1790 | ||
1791 | if (s->s_name[0]) | |
1792 | { | |
1793 | fragS *frag = segment_info[i].frchainP->frch_root; | |
1794 | char *buffer; | |
1795 | ||
1796 | if (s->s_size == 0) | |
1797 | s->s_scnptr = 0; | |
1798 | else | |
1799 | { | |
1800 | buffer = xmalloc (s->s_size); | |
1801 | s->s_scnptr = *file_cursor; | |
1802 | } | |
1803 | know (s->s_paddr == paddr); | |
1804 | ||
1805 | if (strcmp (s->s_name, ".text") == 0) | |
1806 | s->s_flags |= STYP_TEXT; | |
1807 | else if (strcmp (s->s_name, ".data") == 0) | |
1808 | s->s_flags |= STYP_DATA; | |
1809 | else if (strcmp (s->s_name, ".bss") == 0) | |
1810 | { | |
1811 | s->s_scnptr = 0; | |
1812 | s->s_flags |= STYP_BSS; | |
1813 | ||
1814 | /* @@ Should make the i386 and a29k coff targets define | |
1815 | COFF_NOLOAD_PROBLEM, and have only one test here. */ | |
1816 | #ifndef TC_I386 | |
1817 | #ifndef TC_A29K | |
1818 | #ifndef COFF_NOLOAD_PROBLEM | |
1819 | /* Apparently the SVR3 linker (and exec syscall) and UDI | |
1820 | mondfe progrem are confused by noload sections. */ | |
1821 | s->s_flags |= STYP_NOLOAD; | |
1822 | #endif | |
1823 | #endif | |
1824 | #endif | |
1825 | } | |
1826 | else if (strcmp (s->s_name, ".lit") == 0) | |
1827 | s->s_flags = STYP_LIT | STYP_TEXT; | |
1828 | else if (strcmp (s->s_name, ".init") == 0) | |
1829 | s->s_flags |= STYP_TEXT; | |
1830 | else if (strcmp (s->s_name, ".fini") == 0) | |
1831 | s->s_flags |= STYP_TEXT; | |
1832 | else if (strncmp (s->s_name, ".comment", 8) == 0) | |
1833 | s->s_flags |= STYP_INFO; | |
1834 | ||
1835 | while (frag) | |
1836 | { | |
1837 | unsigned int fill_size; | |
1838 | switch (frag->fr_type) | |
1839 | { | |
1840 | case rs_machine_dependent: | |
1841 | if (frag->fr_fix) | |
1842 | { | |
1843 | memcpy (buffer + frag->fr_address, | |
1844 | frag->fr_literal, | |
1845 | (unsigned int) frag->fr_fix); | |
1846 | offset += frag->fr_fix; | |
1847 | } | |
1848 | ||
1849 | break; | |
1850 | case rs_space: | |
1851 | assert (frag->fr_symbol == 0); | |
1852 | case rs_fill: | |
1853 | case rs_align: | |
1854 | case rs_align_code: | |
1855 | case rs_org: | |
1856 | if (frag->fr_fix) | |
1857 | { | |
1858 | memcpy (buffer + frag->fr_address, | |
1859 | frag->fr_literal, | |
1860 | (unsigned int) frag->fr_fix); | |
1861 | offset += frag->fr_fix; | |
1862 | } | |
1863 | ||
1864 | fill_size = frag->fr_var; | |
1865 | if (fill_size && frag->fr_offset > 0) | |
1866 | { | |
1867 | unsigned int count; | |
1868 | unsigned int off = frag->fr_fix; | |
1869 | for (count = frag->fr_offset; count; count--) | |
1870 | { | |
1871 | if (fill_size + frag->fr_address + off <= s->s_size) | |
1872 | { | |
1873 | memcpy (buffer + frag->fr_address + off, | |
1874 | frag->fr_literal + frag->fr_fix, | |
1875 | fill_size); | |
1876 | off += fill_size; | |
1877 | offset += fill_size; | |
1878 | } | |
1879 | } | |
1880 | } | |
1881 | break; | |
1882 | case rs_broken_word: | |
1883 | break; | |
1884 | default: | |
1885 | abort (); | |
1886 | } | |
1887 | frag = frag->fr_next; | |
1888 | } | |
1889 | ||
1890 | if (s->s_size != 0) | |
1891 | { | |
1892 | if (s->s_scnptr != 0) | |
1893 | { | |
1894 | bfd_write (buffer, s->s_size, 1, abfd); | |
1895 | *file_cursor += s->s_size; | |
1896 | } | |
1897 | free (buffer); | |
1898 | } | |
1899 | paddr += s->s_size; | |
1900 | } | |
1901 | } | |
1902 | } | |
1903 | ||
1904 | /* Coff file generation & utilities */ | |
1905 | ||
1906 | static void | |
1907 | coff_header_append (abfd, h) | |
1908 | bfd * abfd; | |
1909 | object_headers * h; | |
1910 | { | |
1911 | unsigned int i; | |
1912 | char buffer[1000]; | |
1913 | char buffero[1000]; | |
1914 | ||
1915 | bfd_seek (abfd, 0, 0); | |
1916 | ||
1917 | #ifndef OBJ_COFF_OMIT_OPTIONAL_HEADER | |
1918 | H_SET_MAGIC_NUMBER (h, COFF_MAGIC); | |
1919 | H_SET_VERSION_STAMP (h, 0); | |
1920 | H_SET_ENTRY_POINT (h, 0); | |
1921 | H_SET_TEXT_START (h, segment_info[SEG_E0].frchainP->frch_root->fr_address); | |
1922 | H_SET_DATA_START (h, segment_info[SEG_E1].frchainP->frch_root->fr_address); | |
1923 | H_SET_SIZEOF_OPTIONAL_HEADER (h, bfd_coff_swap_aouthdr_out(abfd, &h->aouthdr, | |
1924 | buffero)); | |
1925 | #else /* defined (OBJ_COFF_OMIT_OPTIONAL_HEADER) */ | |
1926 | H_SET_SIZEOF_OPTIONAL_HEADER (h, 0); | |
1927 | #endif /* defined (OBJ_COFF_OMIT_OPTIONAL_HEADER) */ | |
1928 | ||
1929 | i = bfd_coff_swap_filehdr_out (abfd, &h->filehdr, buffer); | |
1930 | ||
1931 | bfd_write (buffer, i, 1, abfd); | |
1932 | bfd_write (buffero, H_GET_SIZEOF_OPTIONAL_HEADER (h), 1, abfd); | |
1933 | ||
1934 | for (i = SEG_E0; i < SEG_LAST; i++) | |
1935 | { | |
1936 | #ifdef COFF_LONG_SECTION_NAMES | |
1937 | unsigned long string_size = 4; | |
1938 | #endif | |
1939 | ||
1940 | if (segment_info[i].scnhdr.s_name[0]) | |
1941 | { | |
1942 | unsigned int size; | |
1943 | ||
1944 | #ifdef COFF_LONG_SECTION_NAMES | |
1945 | /* Support long section names as found in PE. This code | |
1946 | must coordinate with that in write_object_file and | |
1947 | w_strings. */ | |
1948 | if (strlen (segment_info[i].name) > SCNNMLEN) | |
1949 | { | |
1950 | memset (segment_info[i].scnhdr.s_name, 0, SCNNMLEN); | |
1951 | sprintf (segment_info[i].scnhdr.s_name, "/%lu", string_size); | |
1952 | string_size += strlen (segment_info[i].name) + 1; | |
1953 | } | |
1954 | #endif | |
1955 | ||
1956 | size = bfd_coff_swap_scnhdr_out (abfd, | |
1957 | &(segment_info[i].scnhdr), | |
1958 | buffer); | |
1959 | if (size == 0) | |
1960 | as_bad ("bfd_coff_swap_scnhdr_out failed"); | |
1961 | bfd_write (buffer, size, 1, abfd); | |
1962 | } | |
1963 | } | |
1964 | } | |
1965 | ||
1966 | ||
1967 | char * | |
1968 | symbol_to_chars (abfd, where, symbolP) | |
1969 | bfd * abfd; | |
1970 | char *where; | |
1971 | symbolS * symbolP; | |
1972 | { | |
1973 | unsigned int numaux = symbolP->sy_symbol.ost_entry.n_numaux; | |
1974 | unsigned int i; | |
1975 | valueT val; | |
1976 | ||
1977 | /* Turn any symbols with register attributes into abs symbols */ | |
1978 | if (S_GET_SEGMENT (symbolP) == reg_section) | |
1979 | { | |
1980 | S_SET_SEGMENT (symbolP, absolute_section); | |
1981 | } | |
1982 | /* At the same time, relocate all symbols to their output value */ | |
1983 | ||
1984 | val = (segment_info[S_GET_SEGMENT (symbolP)].scnhdr.s_paddr | |
1985 | + S_GET_VALUE (symbolP)); | |
1986 | ||
1987 | S_SET_VALUE (symbolP, val); | |
1988 | ||
1989 | symbolP->sy_symbol.ost_entry.n_value = val; | |
1990 | ||
1991 | where += bfd_coff_swap_sym_out (abfd, &symbolP->sy_symbol.ost_entry, | |
1992 | where); | |
1993 | ||
1994 | for (i = 0; i < numaux; i++) | |
1995 | { | |
1996 | where += bfd_coff_swap_aux_out (abfd, | |
1997 | &symbolP->sy_symbol.ost_auxent[i], | |
1998 | S_GET_DATA_TYPE (symbolP), | |
1999 | S_GET_STORAGE_CLASS (symbolP), | |
2000 | i, numaux, where); | |
2001 | } | |
2002 | return where; | |
2003 | ||
2004 | } | |
2005 | ||
2006 | void | |
2007 | coff_obj_symbol_new_hook (symbolP) | |
2008 | symbolS *symbolP; | |
2009 | { | |
2010 | char underscore = 0; /* Symbol has leading _ */ | |
2011 | ||
2012 | /* Effective symbol */ | |
2013 | /* Store the pointer in the offset. */ | |
2014 | S_SET_ZEROES (symbolP, 0L); | |
2015 | S_SET_DATA_TYPE (symbolP, T_NULL); | |
2016 | S_SET_STORAGE_CLASS (symbolP, 0); | |
2017 | S_SET_NUMBER_AUXILIARY (symbolP, 0); | |
2018 | /* Additional information */ | |
2019 | symbolP->sy_symbol.ost_flags = 0; | |
2020 | /* Auxiliary entries */ | |
2021 | memset ((char *) &symbolP->sy_symbol.ost_auxent[0], 0, AUXESZ); | |
2022 | ||
2023 | if (S_IS_STRING (symbolP)) | |
2024 | SF_SET_STRING (symbolP); | |
2025 | if (!underscore && S_IS_LOCAL (symbolP)) | |
2026 | SF_SET_LOCAL (symbolP); | |
2027 | } | |
2028 | ||
2029 | /* | |
2030 | * Handle .ln directives. | |
2031 | */ | |
2032 | ||
2033 | static void | |
2034 | obj_coff_ln (appline) | |
2035 | int appline; | |
2036 | { | |
2037 | int l; | |
2038 | ||
2039 | if (! appline && def_symbol_in_progress != NULL) | |
2040 | { | |
2041 | as_warn (".ln pseudo-op inside .def/.endef: ignored."); | |
2042 | demand_empty_rest_of_line (); | |
2043 | return; | |
2044 | } /* wrong context */ | |
2045 | ||
2046 | l = get_absolute_expression (); | |
2047 | c_line_new (0, frag_now_fix (), l, frag_now); | |
2048 | ||
2049 | if (appline) | |
2050 | new_logical_line ((char *) NULL, l - 1); | |
2051 | ||
2052 | #ifndef NO_LISTING | |
2053 | { | |
2054 | extern int listing; | |
2055 | ||
2056 | if (listing) | |
2057 | { | |
2058 | if (! appline) | |
2059 | l += line_base - 1; | |
2060 | listing_source_line ((unsigned int) l); | |
2061 | } | |
2062 | ||
2063 | } | |
2064 | #endif | |
2065 | demand_empty_rest_of_line (); | |
2066 | } | |
2067 | ||
2068 | /* | |
2069 | * def() | |
2070 | * | |
2071 | * Handle .def directives. | |
2072 | * | |
2073 | * One might ask : why can't we symbol_new if the symbol does not | |
2074 | * already exist and fill it with debug information. Because of | |
2075 | * the C_EFCN special symbol. It would clobber the value of the | |
2076 | * function symbol before we have a chance to notice that it is | |
2077 | * a C_EFCN. And a second reason is that the code is more clear this | |
2078 | * way. (at least I think it is :-). | |
2079 | * | |
2080 | */ | |
2081 | ||
2082 | #define SKIP_SEMI_COLON() while (*input_line_pointer++ != ';') | |
2083 | #define SKIP_WHITESPACES() while (*input_line_pointer == ' ' || \ | |
2084 | *input_line_pointer == '\t') \ | |
2085 | input_line_pointer++; | |
2086 | ||
2087 | static void | |
2088 | obj_coff_def (what) | |
2089 | int what; | |
2090 | { | |
2091 | char name_end; /* Char after the end of name */ | |
2092 | char *symbol_name; /* Name of the debug symbol */ | |
2093 | char *symbol_name_copy; /* Temporary copy of the name */ | |
2094 | unsigned int symbol_name_length; | |
2095 | ||
2096 | if (def_symbol_in_progress != NULL) | |
2097 | { | |
2098 | as_warn (".def pseudo-op used inside of .def/.endef: ignored."); | |
2099 | demand_empty_rest_of_line (); | |
2100 | return; | |
2101 | } /* if not inside .def/.endef */ | |
2102 | ||
2103 | SKIP_WHITESPACES (); | |
2104 | ||
2105 | def_symbol_in_progress = (symbolS *) obstack_alloc (¬es, sizeof (*def_symbol_in_progress)); | |
2106 | memset (def_symbol_in_progress, 0, sizeof (*def_symbol_in_progress)); | |
2107 | ||
2108 | symbol_name = input_line_pointer; | |
2109 | name_end = get_symbol_end (); | |
2110 | symbol_name_length = strlen (symbol_name); | |
2111 | symbol_name_copy = xmalloc (symbol_name_length + 1); | |
2112 | strcpy (symbol_name_copy, symbol_name); | |
2113 | #ifdef tc_canonicalize_symbol_name | |
2114 | symbol_name_copy = tc_canonicalize_symbol_name (symbol_name_copy); | |
2115 | #endif | |
2116 | ||
2117 | /* Initialize the new symbol */ | |
2118 | #ifdef STRIP_UNDERSCORE | |
2119 | S_SET_NAME (def_symbol_in_progress, (*symbol_name_copy == '_' | |
2120 | ? symbol_name_copy + 1 | |
2121 | : symbol_name_copy)); | |
2122 | #else /* STRIP_UNDERSCORE */ | |
2123 | S_SET_NAME (def_symbol_in_progress, symbol_name_copy); | |
2124 | #endif /* STRIP_UNDERSCORE */ | |
2125 | /* free(symbol_name_copy); */ | |
2126 | def_symbol_in_progress->sy_name_offset = (unsigned long) ~0; | |
2127 | def_symbol_in_progress->sy_number = ~0; | |
2128 | def_symbol_in_progress->sy_frag = &zero_address_frag; | |
2129 | S_SET_VALUE (def_symbol_in_progress, 0); | |
2130 | ||
2131 | if (S_IS_STRING (def_symbol_in_progress)) | |
2132 | SF_SET_STRING (def_symbol_in_progress); | |
2133 | ||
2134 | *input_line_pointer = name_end; | |
2135 | ||
2136 | demand_empty_rest_of_line (); | |
2137 | } | |
2138 | ||
2139 | unsigned int dim_index; | |
2140 | ||
2141 | ||
2142 | static void | |
2143 | obj_coff_endef (ignore) | |
2144 | int ignore; | |
2145 | { | |
2146 | symbolS *symbolP = 0; | |
2147 | /* DIM BUG FIX sac@cygnus.com */ | |
2148 | dim_index = 0; | |
2149 | if (def_symbol_in_progress == NULL) | |
2150 | { | |
2151 | as_warn (".endef pseudo-op used outside of .def/.endef: ignored."); | |
2152 | demand_empty_rest_of_line (); | |
2153 | return; | |
2154 | } /* if not inside .def/.endef */ | |
2155 | ||
2156 | /* Set the section number according to storage class. */ | |
2157 | switch (S_GET_STORAGE_CLASS (def_symbol_in_progress)) | |
2158 | { | |
2159 | case C_STRTAG: | |
2160 | case C_ENTAG: | |
2161 | case C_UNTAG: | |
2162 | SF_SET_TAG (def_symbol_in_progress); | |
2163 | /* intentional fallthrough */ | |
2164 | case C_FILE: | |
2165 | case C_TPDEF: | |
2166 | SF_SET_DEBUG (def_symbol_in_progress); | |
2167 | S_SET_SEGMENT (def_symbol_in_progress, SEG_DEBUG); | |
2168 | break; | |
2169 | ||
2170 | case C_EFCN: | |
2171 | SF_SET_LOCAL (def_symbol_in_progress); /* Do not emit this symbol. */ | |
2172 | /* intentional fallthrough */ | |
2173 | case C_BLOCK: | |
2174 | SF_SET_PROCESS (def_symbol_in_progress); /* Will need processing before writing */ | |
2175 | /* intentional fallthrough */ | |
2176 | case C_FCN: | |
2177 | S_SET_SEGMENT (def_symbol_in_progress, SEG_E0); | |
2178 | ||
2179 | if (strcmp (S_GET_NAME (def_symbol_in_progress), ".bf") == 0) | |
2180 | { /* .bf */ | |
2181 | if (function_lineoff < 0) | |
2182 | { | |
2183 | fprintf (stderr, "`.bf' symbol without preceding function\n"); | |
2184 | } /* missing function symbol */ | |
2185 | SA_GET_SYM_LNNOPTR (last_line_symbol) = function_lineoff; | |
2186 | ||
2187 | SF_SET_PROCESS (last_line_symbol); | |
2188 | SF_SET_ADJ_LNNOPTR (last_line_symbol); | |
2189 | SF_SET_PROCESS (def_symbol_in_progress); | |
2190 | function_lineoff = -1; | |
2191 | } | |
2192 | /* Value is always set to . */ | |
2193 | def_symbol_in_progress->sy_frag = frag_now; | |
2194 | S_SET_VALUE (def_symbol_in_progress, (valueT) frag_now_fix ()); | |
2195 | break; | |
2196 | ||
2197 | #ifdef C_AUTOARG | |
2198 | case C_AUTOARG: | |
2199 | #endif /* C_AUTOARG */ | |
2200 | case C_AUTO: | |
2201 | case C_REG: | |
2202 | case C_MOS: | |
2203 | case C_MOE: | |
2204 | case C_MOU: | |
2205 | case C_ARG: | |
2206 | case C_REGPARM: | |
2207 | case C_FIELD: | |
2208 | case C_EOS: | |
2209 | SF_SET_DEBUG (def_symbol_in_progress); | |
2210 | S_SET_SEGMENT (def_symbol_in_progress, absolute_section); | |
2211 | break; | |
2212 | ||
2213 | case C_EXT: | |
2214 | case C_STAT: | |
2215 | case C_LABEL: | |
2216 | /* Valid but set somewhere else (s_comm, s_lcomm, colon) */ | |
2217 | break; | |
2218 | ||
2219 | case C_USTATIC: | |
2220 | case C_EXTDEF: | |
2221 | case C_ULABEL: | |
2222 | as_warn ("unexpected storage class %d", S_GET_STORAGE_CLASS (def_symbol_in_progress)); | |
2223 | break; | |
2224 | } /* switch on storage class */ | |
2225 | ||
2226 | /* Now that we have built a debug symbol, try to find if we should | |
2227 | merge with an existing symbol or not. If a symbol is C_EFCN or | |
2228 | absolute_section or untagged SEG_DEBUG it never merges. We also | |
2229 | don't merge labels, which are in a different namespace, nor | |
2230 | symbols which have not yet been defined since they are typically | |
2231 | unique, nor do we merge tags with non-tags. */ | |
2232 | ||
2233 | /* Two cases for functions. Either debug followed by definition or | |
2234 | definition followed by debug. For definition first, we will | |
2235 | merge the debug symbol into the definition. For debug first, the | |
2236 | lineno entry MUST point to the definition function or else it | |
2237 | will point off into space when crawl_symbols() merges the debug | |
2238 | symbol into the real symbol. Therefor, let's presume the debug | |
2239 | symbol is a real function reference. */ | |
2240 | ||
2241 | /* FIXME-SOON If for some reason the definition label/symbol is | |
2242 | never seen, this will probably leave an undefined symbol at link | |
2243 | time. */ | |
2244 | ||
2245 | if (S_GET_STORAGE_CLASS (def_symbol_in_progress) == C_EFCN | |
2246 | || S_GET_STORAGE_CLASS (def_symbol_in_progress) == C_LABEL | |
2247 | || (S_GET_SEGMENT (def_symbol_in_progress) == SEG_DEBUG | |
2248 | && !SF_GET_TAG (def_symbol_in_progress)) | |
2249 | || S_GET_SEGMENT (def_symbol_in_progress) == absolute_section | |
2250 | || def_symbol_in_progress->sy_value.X_op != O_constant | |
2251 | || (symbolP = symbol_find_base (S_GET_NAME (def_symbol_in_progress), DO_NOT_STRIP)) == NULL | |
2252 | || (SF_GET_TAG (def_symbol_in_progress) != SF_GET_TAG (symbolP))) | |
2253 | { | |
2254 | symbol_append (def_symbol_in_progress, symbol_lastP, &symbol_rootP, | |
2255 | &symbol_lastP); | |
2256 | } | |
2257 | else | |
2258 | { | |
2259 | /* This symbol already exists, merge the newly created symbol | |
2260 | into the old one. This is not mandatory. The linker can | |
2261 | handle duplicate symbols correctly. But I guess that it save | |
2262 | a *lot* of space if the assembly file defines a lot of | |
2263 | symbols. [loic] */ | |
2264 | ||
2265 | /* The debug entry (def_symbol_in_progress) is merged into the | |
2266 | previous definition. */ | |
2267 | ||
2268 | c_symbol_merge (def_symbol_in_progress, symbolP); | |
2269 | /* FIXME-SOON Should *def_symbol_in_progress be free'd? xoxorich. */ | |
2270 | def_symbol_in_progress = symbolP; | |
2271 | ||
2272 | if (SF_GET_FUNCTION (def_symbol_in_progress) | |
2273 | || SF_GET_TAG (def_symbol_in_progress) | |
2274 | || S_GET_STORAGE_CLASS (def_symbol_in_progress) == C_STAT) | |
2275 | { | |
2276 | /* For functions, and tags, and static symbols, the symbol | |
2277 | *must* be where the debug symbol appears. Move the | |
2278 | existing symbol to the current place. */ | |
2279 | /* If it already is at the end of the symbol list, do nothing */ | |
2280 | if (def_symbol_in_progress != symbol_lastP) | |
2281 | { | |
2282 | symbol_remove (def_symbol_in_progress, &symbol_rootP, | |
2283 | &symbol_lastP); | |
2284 | symbol_append (def_symbol_in_progress, symbol_lastP, | |
2285 | &symbol_rootP, &symbol_lastP); | |
2286 | } /* if not already in place */ | |
2287 | } /* if function */ | |
2288 | } /* normal or mergable */ | |
2289 | ||
2290 | if (SF_GET_TAG (def_symbol_in_progress)) | |
2291 | { | |
2292 | symbolS *oldtag; | |
2293 | ||
2294 | oldtag = symbol_find_base (S_GET_NAME (def_symbol_in_progress), | |
2295 | DO_NOT_STRIP); | |
2296 | if (oldtag == NULL || ! SF_GET_TAG (oldtag)) | |
2297 | tag_insert (S_GET_NAME (def_symbol_in_progress), | |
2298 | def_symbol_in_progress); | |
2299 | } | |
2300 | ||
2301 | if (SF_GET_FUNCTION (def_symbol_in_progress)) | |
2302 | { | |
2303 | know (sizeof (def_symbol_in_progress) <= sizeof (long)); | |
2304 | function_lineoff | |
2305 | = c_line_new (def_symbol_in_progress, 0, 0, &zero_address_frag); | |
2306 | ||
2307 | SF_SET_PROCESS (def_symbol_in_progress); | |
2308 | ||
2309 | if (symbolP == NULL) | |
2310 | { | |
2311 | /* That is, if this is the first time we've seen the | |
2312 | function... */ | |
2313 | symbol_table_insert (def_symbol_in_progress); | |
2314 | } /* definition follows debug */ | |
2315 | } /* Create the line number entry pointing to the function being defined */ | |
2316 | ||
2317 | def_symbol_in_progress = NULL; | |
2318 | demand_empty_rest_of_line (); | |
2319 | } | |
2320 | ||
2321 | static void | |
2322 | obj_coff_dim (ignore) | |
2323 | int ignore; | |
2324 | { | |
2325 | int dim_index; | |
2326 | ||
2327 | if (def_symbol_in_progress == NULL) | |
2328 | { | |
2329 | as_warn (".dim pseudo-op used outside of .def/.endef: ignored."); | |
2330 | demand_empty_rest_of_line (); | |
2331 | return; | |
2332 | } /* if not inside .def/.endef */ | |
2333 | ||
2334 | S_SET_NUMBER_AUXILIARY (def_symbol_in_progress, 1); | |
2335 | ||
2336 | for (dim_index = 0; dim_index < DIMNUM; dim_index++) | |
2337 | { | |
2338 | SKIP_WHITESPACES (); | |
2339 | SA_SET_SYM_DIMEN (def_symbol_in_progress, dim_index, | |
2340 | get_absolute_expression ()); | |
2341 | ||
2342 | switch (*input_line_pointer) | |
2343 | { | |
2344 | case ',': | |
2345 | input_line_pointer++; | |
2346 | break; | |
2347 | ||
2348 | default: | |
2349 | as_warn ("badly formed .dim directive ignored"); | |
2350 | /* intentional fallthrough */ | |
2351 | case '\n': | |
2352 | case ';': | |
2353 | dim_index = DIMNUM; | |
2354 | break; | |
2355 | } | |
2356 | } | |
2357 | ||
2358 | demand_empty_rest_of_line (); | |
2359 | } | |
2360 | ||
2361 | static void | |
2362 | obj_coff_line (ignore) | |
2363 | int ignore; | |
2364 | { | |
2365 | int this_base; | |
2366 | const char *name; | |
2367 | ||
2368 | if (def_symbol_in_progress == NULL) | |
2369 | { | |
2370 | obj_coff_ln (0); | |
2371 | return; | |
2372 | } | |
2373 | ||
2374 | name = S_GET_NAME (def_symbol_in_progress); | |
2375 | this_base = get_absolute_expression (); | |
2376 | ||
2377 | /* Only .bf symbols indicate the use of a new base line number; the | |
2378 | line numbers associated with .ef, .bb, .eb are relative to the | |
2379 | start of the containing function. */ | |
2380 | if (!strcmp (".bf", name)) | |
2381 | { | |
2382 | #if 0 /* XXX Can we ever have line numbers going backwards? */ | |
2383 | if (this_base > line_base) | |
2384 | #endif | |
2385 | { | |
2386 | line_base = this_base; | |
2387 | } | |
2388 | ||
2389 | #ifndef NO_LISTING | |
2390 | { | |
2391 | extern int listing; | |
2392 | if (listing) | |
2393 | { | |
2394 | listing_source_line ((unsigned int) line_base); | |
2395 | } | |
2396 | } | |
2397 | #endif | |
2398 | } | |
2399 | ||
2400 | S_SET_NUMBER_AUXILIARY (def_symbol_in_progress, 1); | |
2401 | SA_SET_SYM_LNNO (def_symbol_in_progress, this_base); | |
2402 | ||
2403 | demand_empty_rest_of_line (); | |
2404 | } | |
2405 | ||
2406 | static void | |
2407 | obj_coff_size (ignore) | |
2408 | int ignore; | |
2409 | { | |
2410 | if (def_symbol_in_progress == NULL) | |
2411 | { | |
2412 | as_warn (".size pseudo-op used outside of .def/.endef ignored."); | |
2413 | demand_empty_rest_of_line (); | |
2414 | return; | |
2415 | } /* if not inside .def/.endef */ | |
2416 | ||
2417 | S_SET_NUMBER_AUXILIARY (def_symbol_in_progress, 1); | |
2418 | SA_SET_SYM_SIZE (def_symbol_in_progress, get_absolute_expression ()); | |
2419 | demand_empty_rest_of_line (); | |
2420 | } | |
2421 | ||
2422 | static void | |
2423 | obj_coff_scl (ignore) | |
2424 | int ignore; | |
2425 | { | |
2426 | if (def_symbol_in_progress == NULL) | |
2427 | { | |
2428 | as_warn (".scl pseudo-op used outside of .def/.endef ignored."); | |
2429 | demand_empty_rest_of_line (); | |
2430 | return; | |
2431 | } /* if not inside .def/.endef */ | |
2432 | ||
2433 | S_SET_STORAGE_CLASS (def_symbol_in_progress, get_absolute_expression ()); | |
2434 | demand_empty_rest_of_line (); | |
2435 | } | |
2436 | ||
2437 | static void | |
2438 | obj_coff_tag (ignore) | |
2439 | int ignore; | |
2440 | { | |
2441 | char *symbol_name; | |
2442 | char name_end; | |
2443 | ||
2444 | if (def_symbol_in_progress == NULL) | |
2445 | { | |
2446 | as_warn (".tag pseudo-op used outside of .def/.endef ignored."); | |
2447 | demand_empty_rest_of_line (); | |
2448 | return; | |
2449 | } | |
2450 | ||
2451 | S_SET_NUMBER_AUXILIARY (def_symbol_in_progress, 1); | |
2452 | symbol_name = input_line_pointer; | |
2453 | name_end = get_symbol_end (); | |
2454 | #ifdef tc_canonicalize_symbol_name | |
2455 | symbol_name = tc_canonicalize_symbol_name (symbol_name); | |
2456 | #endif | |
2457 | ||
2458 | /* Assume that the symbol referred to by .tag is always defined. | |
2459 | This was a bad assumption. I've added find_or_make. xoxorich. */ | |
2460 | SA_SET_SYM_TAGNDX (def_symbol_in_progress, | |
2461 | (long) tag_find_or_make (symbol_name)); | |
2462 | if (SA_GET_SYM_TAGNDX (def_symbol_in_progress) == 0L) | |
2463 | { | |
2464 | as_warn ("tag not found for .tag %s", symbol_name); | |
2465 | } /* not defined */ | |
2466 | ||
2467 | SF_SET_TAGGED (def_symbol_in_progress); | |
2468 | *input_line_pointer = name_end; | |
2469 | ||
2470 | demand_empty_rest_of_line (); | |
2471 | } | |
2472 | ||
2473 | static void | |
2474 | obj_coff_type (ignore) | |
2475 | int ignore; | |
2476 | { | |
2477 | if (def_symbol_in_progress == NULL) | |
2478 | { | |
2479 | as_warn (".type pseudo-op used outside of .def/.endef ignored."); | |
2480 | demand_empty_rest_of_line (); | |
2481 | return; | |
2482 | } /* if not inside .def/.endef */ | |
2483 | ||
2484 | S_SET_DATA_TYPE (def_symbol_in_progress, get_absolute_expression ()); | |
2485 | ||
2486 | if (ISFCN (S_GET_DATA_TYPE (def_symbol_in_progress)) && | |
2487 | S_GET_STORAGE_CLASS (def_symbol_in_progress) != C_TPDEF) | |
2488 | { | |
2489 | SF_SET_FUNCTION (def_symbol_in_progress); | |
2490 | } /* is a function */ | |
2491 | ||
2492 | demand_empty_rest_of_line (); | |
2493 | } | |
2494 | ||
2495 | static void | |
2496 | obj_coff_val (ignore) | |
2497 | int ignore; | |
2498 | { | |
2499 | if (def_symbol_in_progress == NULL) | |
2500 | { | |
2501 | as_warn (".val pseudo-op used outside of .def/.endef ignored."); | |
2502 | demand_empty_rest_of_line (); | |
2503 | return; | |
2504 | } /* if not inside .def/.endef */ | |
2505 | ||
2506 | if (is_name_beginner (*input_line_pointer)) | |
2507 | { | |
2508 | char *symbol_name = input_line_pointer; | |
2509 | char name_end = get_symbol_end (); | |
2510 | ||
2511 | #ifdef tc_canonicalize_symbol_name | |
2512 | symbol_name = tc_canonicalize_symbol_name (symbol_name); | |
2513 | #endif | |
2514 | ||
2515 | if (!strcmp (symbol_name, ".")) | |
2516 | { | |
2517 | def_symbol_in_progress->sy_frag = frag_now; | |
2518 | S_SET_VALUE (def_symbol_in_progress, (valueT) frag_now_fix ()); | |
2519 | /* If the .val is != from the .def (e.g. statics) */ | |
2520 | } | |
2521 | else if (strcmp (S_GET_NAME (def_symbol_in_progress), symbol_name)) | |
2522 | { | |
2523 | def_symbol_in_progress->sy_value.X_op = O_symbol; | |
2524 | def_symbol_in_progress->sy_value.X_add_symbol = | |
2525 | symbol_find_or_make (symbol_name); | |
2526 | def_symbol_in_progress->sy_value.X_op_symbol = NULL; | |
2527 | def_symbol_in_progress->sy_value.X_add_number = 0; | |
2528 | ||
2529 | /* If the segment is undefined when the forward reference is | |
2530 | resolved, then copy the segment id from the forward | |
2531 | symbol. */ | |
2532 | SF_SET_GET_SEGMENT (def_symbol_in_progress); | |
2533 | ||
2534 | /* FIXME: gcc can generate address expressions | |
2535 | here in unusual cases (search for "obscure" | |
2536 | in sdbout.c). We just ignore the offset | |
2537 | here, thus generating incorrect debugging | |
2538 | information. We ignore the rest of the | |
2539 | line just below. */ | |
2540 | } | |
2541 | /* Otherwise, it is the name of a non debug symbol and | |
2542 | its value will be calculated later. */ | |
2543 | *input_line_pointer = name_end; | |
2544 | ||
2545 | /* FIXME: this is to avoid an error message in the | |
2546 | FIXME case mentioned just above. */ | |
2547 | while (! is_end_of_line[(unsigned char) *input_line_pointer]) | |
2548 | ++input_line_pointer; | |
2549 | } | |
2550 | else | |
2551 | { | |
2552 | S_SET_VALUE (def_symbol_in_progress, | |
2553 | (valueT) get_absolute_expression ()); | |
2554 | } /* if symbol based */ | |
2555 | ||
2556 | demand_empty_rest_of_line (); | |
2557 | } | |
2558 | ||
2559 | #ifdef TE_PE | |
2560 | ||
2561 | /* Handle the .linkonce pseudo-op. This is parsed by s_linkonce in | |
2562 | read.c, which then calls this object file format specific routine. */ | |
2563 | ||
2564 | void | |
2565 | obj_coff_pe_handle_link_once (type) | |
2566 | enum linkonce_type type; | |
2567 | { | |
2568 | seg_info (now_seg)->scnhdr.s_flags |= IMAGE_SCN_LNK_COMDAT; | |
2569 | ||
2570 | /* We store the type in the seg_info structure, and use it to set up | |
2571 | the auxiliary entry for the section symbol in c_section_symbol. */ | |
2572 | seg_info (now_seg)->linkonce = type; | |
2573 | } | |
2574 | ||
2575 | #endif /* TE_PE */ | |
2576 | ||
2577 | void | |
2578 | coff_obj_read_begin_hook () | |
2579 | { | |
2580 | /* These had better be the same. Usually 18 bytes. */ | |
2581 | #ifndef BFD_HEADERS | |
2582 | know (sizeof (SYMENT) == sizeof (AUXENT)); | |
2583 | know (SYMESZ == AUXESZ); | |
2584 | #endif | |
2585 | tag_init (); | |
2586 | } | |
2587 | ||
2588 | /* This function runs through the symbol table and puts all the | |
2589 | externals onto another chain */ | |
2590 | ||
2591 | /* The chain of globals. */ | |
2592 | symbolS *symbol_globalP; | |
2593 | symbolS *symbol_global_lastP; | |
2594 | ||
2595 | /* The chain of externals */ | |
2596 | symbolS *symbol_externP; | |
2597 | symbolS *symbol_extern_lastP; | |
2598 | ||
2599 | stack *block_stack; | |
2600 | symbolS *last_functionP; | |
2601 | static symbolS *last_bfP; | |
2602 | symbolS *last_tagP; | |
2603 | ||
2604 | static unsigned int | |
2605 | yank_symbols () | |
2606 | { | |
2607 | symbolS *symbolP; | |
2608 | unsigned int symbol_number = 0; | |
2609 | unsigned int last_file_symno = 0; | |
2610 | ||
2611 | struct filename_list *filename_list_scan = filename_list_head; | |
2612 | ||
2613 | for (symbolP = symbol_rootP; | |
2614 | symbolP; | |
2615 | symbolP = symbolP ? symbol_next (symbolP) : symbol_rootP) | |
2616 | { | |
2617 | if (symbolP->sy_mri_common) | |
2618 | { | |
2619 | if (S_GET_STORAGE_CLASS (symbolP) == C_EXT) | |
2620 | as_bad ("%s: global symbols not supported in common sections", | |
2621 | S_GET_NAME (symbolP)); | |
2622 | symbol_remove (symbolP, &symbol_rootP, &symbol_lastP); | |
2623 | continue; | |
2624 | } | |
2625 | ||
2626 | if (!SF_GET_DEBUG (symbolP)) | |
2627 | { | |
2628 | /* Debug symbols do not need all this rubbish */ | |
2629 | symbolS *real_symbolP; | |
2630 | ||
2631 | /* L* and C_EFCN symbols never merge. */ | |
2632 | if (!SF_GET_LOCAL (symbolP) | |
2633 | && !SF_GET_STATICS (symbolP) | |
2634 | && S_GET_STORAGE_CLASS (symbolP) != C_LABEL | |
2635 | && symbolP->sy_value.X_op == O_constant | |
2636 | && (real_symbolP = symbol_find_base (S_GET_NAME (symbolP), DO_NOT_STRIP)) | |
2637 | && real_symbolP != symbolP) | |
2638 | { | |
2639 | /* FIXME-SOON: where do dups come from? | |
2640 | Maybe tag references before definitions? xoxorich. */ | |
2641 | /* Move the debug data from the debug symbol to the | |
2642 | real symbol. Do NOT do the oposite (i.e. move from | |
2643 | real symbol to debug symbol and remove real symbol from the | |
2644 | list.) Because some pointers refer to the real symbol | |
2645 | whereas no pointers refer to the debug symbol. */ | |
2646 | c_symbol_merge (symbolP, real_symbolP); | |
2647 | /* Replace the current symbol by the real one */ | |
2648 | /* The symbols will never be the last or the first | |
2649 | because : 1st symbol is .file and 3 last symbols are | |
2650 | .text, .data, .bss */ | |
2651 | symbol_remove (real_symbolP, &symbol_rootP, &symbol_lastP); | |
2652 | symbol_insert (real_symbolP, symbolP, &symbol_rootP, &symbol_lastP); | |
2653 | symbol_remove (symbolP, &symbol_rootP, &symbol_lastP); | |
2654 | symbolP = real_symbolP; | |
2655 | } /* if not local but dup'd */ | |
2656 | ||
2657 | if (flag_readonly_data_in_text && (S_GET_SEGMENT (symbolP) == SEG_E1)) | |
2658 | { | |
2659 | S_SET_SEGMENT (symbolP, SEG_E0); | |
2660 | } /* push data into text */ | |
2661 | ||
2662 | resolve_symbol_value (symbolP); | |
2663 | ||
2664 | if (S_GET_STORAGE_CLASS (symbolP) == C_NULL) | |
2665 | { | |
2666 | if (!S_IS_DEFINED (symbolP) && !SF_GET_LOCAL (symbolP)) | |
2667 | { | |
2668 | S_SET_EXTERNAL (symbolP); | |
2669 | } | |
2670 | else if (S_GET_SEGMENT (symbolP) == SEG_E0) | |
2671 | { | |
2672 | S_SET_STORAGE_CLASS (symbolP, C_LABEL); | |
2673 | } | |
2674 | else | |
2675 | { | |
2676 | S_SET_STORAGE_CLASS (symbolP, C_STAT); | |
2677 | } | |
2678 | } | |
2679 | ||
2680 | /* Mainly to speed up if not -g */ | |
2681 | if (SF_GET_PROCESS (symbolP)) | |
2682 | { | |
2683 | /* Handle the nested blocks auxiliary info. */ | |
2684 | if (S_GET_STORAGE_CLASS (symbolP) == C_BLOCK) | |
2685 | { | |
2686 | if (!strcmp (S_GET_NAME (symbolP), ".bb")) | |
2687 | stack_push (block_stack, (char *) &symbolP); | |
2688 | else | |
2689 | { /* .eb */ | |
2690 | register symbolS *begin_symbolP; | |
2691 | begin_symbolP = *(symbolS **) stack_pop (block_stack); | |
2692 | if (begin_symbolP == (symbolS *) 0) | |
2693 | as_warn ("mismatched .eb"); | |
2694 | else | |
2695 | SA_SET_SYM_ENDNDX (begin_symbolP, symbol_number + 2); | |
2696 | } | |
2697 | } | |
2698 | /* If we are able to identify the type of a function, and we | |
2699 | are out of a function (last_functionP == 0) then, the | |
2700 | function symbol will be associated with an auxiliary | |
2701 | entry. */ | |
2702 | if (last_functionP == (symbolS *) 0 && | |
2703 | SF_GET_FUNCTION (symbolP)) | |
2704 | { | |
2705 | last_functionP = symbolP; | |
2706 | ||
2707 | if (S_GET_NUMBER_AUXILIARY (symbolP) < 1) | |
2708 | { | |
2709 | S_SET_NUMBER_AUXILIARY (symbolP, 1); | |
2710 | } /* make it at least 1 */ | |
2711 | ||
2712 | /* Clobber possible stale .dim information. */ | |
2713 | #if 0 | |
2714 | /* Iffed out by steve - this fries the lnnoptr info too */ | |
2715 | bzero (symbolP->sy_symbol.ost_auxent[0].x_sym.x_fcnary.x_ary.x_dimen, | |
2716 | sizeof (symbolP->sy_symbol.ost_auxent[0].x_sym.x_fcnary.x_ary.x_dimen)); | |
2717 | #endif | |
2718 | } | |
2719 | if (S_GET_STORAGE_CLASS (symbolP) == C_FCN) | |
2720 | { | |
2721 | if (strcmp (S_GET_NAME (symbolP), ".bf") == 0) | |
2722 | { | |
2723 | if (last_bfP != NULL) | |
2724 | SA_SET_SYM_ENDNDX (last_bfP, symbol_number); | |
2725 | last_bfP = symbolP; | |
2726 | } | |
2727 | } | |
2728 | else if (S_GET_STORAGE_CLASS (symbolP) == C_EFCN) | |
2729 | { | |
2730 | /* I don't even know if this is needed for sdb. But | |
2731 | the standard assembler generates it, so... */ | |
2732 | if (last_functionP == (symbolS *) 0) | |
2733 | as_fatal ("C_EFCN symbol out of scope"); | |
2734 | SA_SET_SYM_FSIZE (last_functionP, | |
2735 | (long) (S_GET_VALUE (symbolP) - | |
2736 | S_GET_VALUE (last_functionP))); | |
2737 | SA_SET_SYM_ENDNDX (last_functionP, symbol_number); | |
2738 | last_functionP = (symbolS *) 0; | |
2739 | } | |
2740 | } | |
2741 | } | |
2742 | else if (SF_GET_TAG (symbolP)) | |
2743 | { | |
2744 | /* First descriptor of a structure must point to | |
2745 | the first slot after the structure description. */ | |
2746 | last_tagP = symbolP; | |
2747 | ||
2748 | } | |
2749 | else if (S_GET_STORAGE_CLASS (symbolP) == C_EOS) | |
2750 | { | |
2751 | /* +2 take in account the current symbol */ | |
2752 | SA_SET_SYM_ENDNDX (last_tagP, symbol_number + 2); | |
2753 | } | |
2754 | else if (S_GET_STORAGE_CLASS (symbolP) == C_FILE) | |
2755 | { | |
2756 | /* If the filename was too long to fit in the | |
2757 | auxent, put it in the string table */ | |
2758 | if (SA_GET_FILE_FNAME_ZEROS (symbolP) == 0 | |
2759 | && SA_GET_FILE_FNAME_OFFSET (symbolP) != 0) | |
2760 | { | |
2761 | SA_SET_FILE_FNAME_OFFSET (symbolP, string_byte_count); | |
2762 | string_byte_count += strlen (filename_list_scan->filename) + 1; | |
2763 | filename_list_scan = filename_list_scan->next; | |
2764 | } | |
2765 | if (S_GET_VALUE (symbolP)) | |
2766 | { | |
2767 | S_SET_VALUE (symbolP, last_file_symno); | |
2768 | last_file_symno = symbol_number; | |
2769 | } /* no one points at the first .file symbol */ | |
2770 | } /* if debug or tag or eos or file */ | |
2771 | ||
2772 | #ifdef tc_frob_coff_symbol | |
2773 | tc_frob_coff_symbol (symbolP); | |
2774 | #endif | |
2775 | ||
2776 | /* We must put the external symbols apart. The loader | |
2777 | does not bomb if we do not. But the references in | |
2778 | the endndx field for a .bb symbol are not corrected | |
2779 | if an external symbol is removed between .bb and .be. | |
2780 | I.e in the following case : | |
2781 | [20] .bb endndx = 22 | |
2782 | [21] foo external | |
2783 | [22] .be | |
2784 | ld will move the symbol 21 to the end of the list but | |
2785 | endndx will still be 22 instead of 21. */ | |
2786 | ||
2787 | ||
2788 | if (SF_GET_LOCAL (symbolP)) | |
2789 | { | |
2790 | /* remove C_EFCN and LOCAL (L...) symbols */ | |
2791 | /* next pointer remains valid */ | |
2792 | symbol_remove (symbolP, &symbol_rootP, &symbol_lastP); | |
2793 | ||
2794 | } | |
2795 | else if (symbolP->sy_value.X_op == O_symbol | |
2796 | && (! S_IS_DEFINED (symbolP) || S_IS_COMMON (symbolP))) | |
2797 | { | |
2798 | /* Skip symbols which were equated to undefined or common | |
2799 | symbols. */ | |
2800 | symbol_remove (symbolP, &symbol_rootP, &symbol_lastP); | |
2801 | } | |
2802 | else if (!S_IS_DEFINED (symbolP) | |
2803 | && !S_IS_DEBUG (symbolP) | |
2804 | && !SF_GET_STATICS (symbolP) && | |
2805 | S_GET_STORAGE_CLASS (symbolP) == C_EXT) | |
2806 | { /* C_EXT && !SF_GET_FUNCTION(symbolP)) */ | |
2807 | /* if external, Remove from the list */ | |
2808 | symbolS *hold = symbol_previous (symbolP); | |
2809 | ||
2810 | symbol_remove (symbolP, &symbol_rootP, &symbol_lastP); | |
2811 | symbol_clear_list_pointers (symbolP); | |
2812 | symbol_append (symbolP, symbol_extern_lastP, &symbol_externP, &symbol_extern_lastP); | |
2813 | symbolP = hold; | |
2814 | } | |
2815 | else if (! S_IS_DEBUG (symbolP) | |
2816 | && ! SF_GET_STATICS (symbolP) | |
2817 | && ! SF_GET_FUNCTION (symbolP) | |
2818 | && S_GET_STORAGE_CLASS (symbolP) == C_EXT) | |
2819 | { | |
2820 | symbolS *hold = symbol_previous (symbolP); | |
2821 | ||
2822 | /* The O'Reilly COFF book says that defined global symbols | |
2823 | come at the end of the symbol table, just before | |
2824 | undefined global symbols. */ | |
2825 | ||
2826 | symbol_remove (symbolP, &symbol_rootP, &symbol_lastP); | |
2827 | symbol_clear_list_pointers (symbolP); | |
2828 | symbol_append (symbolP, symbol_global_lastP, &symbol_globalP, | |
2829 | &symbol_global_lastP); | |
2830 | symbolP = hold; | |
2831 | } | |
2832 | else | |
2833 | { | |
2834 | if (SF_GET_STRING (symbolP)) | |
2835 | { | |
2836 | symbolP->sy_name_offset = string_byte_count; | |
2837 | string_byte_count += strlen (S_GET_NAME (symbolP)) + 1; | |
2838 | } | |
2839 | else | |
2840 | { | |
2841 | symbolP->sy_name_offset = 0; | |
2842 | } /* fix "long" names */ | |
2843 | ||
2844 | symbolP->sy_number = symbol_number; | |
2845 | symbol_number += 1 + S_GET_NUMBER_AUXILIARY (symbolP); | |
2846 | } /* if local symbol */ | |
2847 | } /* traverse the symbol list */ | |
2848 | return symbol_number; | |
2849 | ||
2850 | } | |
2851 | ||
2852 | ||
2853 | static unsigned int | |
2854 | glue_symbols (head, tail) | |
2855 | symbolS **head; | |
2856 | symbolS **tail; | |
2857 | { | |
2858 | unsigned int symbol_number = 0; | |
2859 | symbolS *symbolP; | |
2860 | ||
2861 | for (symbolP = *head; *head != NULL;) | |
2862 | { | |
2863 | symbolS *tmp = *head; | |
2864 | ||
2865 | /* append */ | |
2866 | symbol_remove (tmp, head, tail); | |
2867 | symbol_append (tmp, symbol_lastP, &symbol_rootP, &symbol_lastP); | |
2868 | ||
2869 | /* and process */ | |
2870 | if (SF_GET_STRING (tmp)) | |
2871 | { | |
2872 | tmp->sy_name_offset = string_byte_count; | |
2873 | string_byte_count += strlen (S_GET_NAME (tmp)) + 1; | |
2874 | } | |
2875 | else | |
2876 | { | |
2877 | tmp->sy_name_offset = 0; | |
2878 | } /* fix "long" names */ | |
2879 | ||
2880 | tmp->sy_number = symbol_number; | |
2881 | symbol_number += 1 + S_GET_NUMBER_AUXILIARY (tmp); | |
2882 | } /* append the entire extern chain */ | |
2883 | ||
2884 | return symbol_number; | |
2885 | } | |
2886 | ||
2887 | static unsigned int | |
2888 | tie_tags () | |
2889 | { | |
2890 | unsigned int symbol_number = 0; | |
2891 | ||
2892 | symbolS *symbolP; | |
2893 | for (symbolP = symbol_rootP; symbolP; symbolP = | |
2894 | symbol_next (symbolP)) | |
2895 | { | |
2896 | symbolP->sy_number = symbol_number; | |
2897 | ||
2898 | ||
2899 | ||
2900 | if (SF_GET_TAGGED (symbolP)) | |
2901 | { | |
2902 | SA_SET_SYM_TAGNDX | |
2903 | (symbolP, | |
2904 | ((symbolS *) SA_GET_SYM_TAGNDX (symbolP))->sy_number); | |
2905 | } | |
2906 | ||
2907 | symbol_number += 1 + S_GET_NUMBER_AUXILIARY (symbolP); | |
2908 | } | |
2909 | return symbol_number; | |
2910 | ||
2911 | } | |
2912 | ||
2913 | static void | |
2914 | crawl_symbols (h, abfd) | |
2915 | object_headers *h; | |
2916 | bfd * abfd; | |
2917 | { | |
2918 | unsigned int i; | |
2919 | ||
2920 | /* Initialize the stack used to keep track of the matching .bb .be */ | |
2921 | ||
2922 | block_stack = stack_init (512, sizeof (symbolS *)); | |
2923 | ||
2924 | /* The symbol list should be ordered according to the following sequence | |
2925 | * order : | |
2926 | * . .file symbol | |
2927 | * . debug entries for functions | |
2928 | * . fake symbols for the sections, including .text .data and .bss | |
2929 | * . defined symbols | |
2930 | * . undefined symbols | |
2931 | * But this is not mandatory. The only important point is to put the | |
2932 | * undefined symbols at the end of the list. | |
2933 | */ | |
2934 | ||
2935 | if (symbol_rootP == NULL | |
2936 | || S_GET_STORAGE_CLASS (symbol_rootP) != C_FILE) | |
2937 | { | |
2938 | c_dot_file_symbol ("fake"); | |
2939 | } | |
2940 | /* Is there a .file symbol ? If not insert one at the beginning. */ | |
2941 | ||
2942 | /* | |
2943 | * Build up static symbols for the sections, they are filled in later | |
2944 | */ | |
2945 | ||
2946 | ||
2947 | for (i = SEG_E0; i < SEG_LAST; i++) | |
2948 | if (segment_info[i].scnhdr.s_name[0]) | |
2949 | segment_info[i].dot = c_section_symbol (segment_info[i].name, | |
2950 | i - SEG_E0 + 1); | |
2951 | ||
2952 | /* Take all the externals out and put them into another chain */ | |
2953 | H_SET_SYMBOL_TABLE_SIZE (h, yank_symbols ()); | |
2954 | /* Take the externals and glue them onto the end.*/ | |
2955 | H_SET_SYMBOL_TABLE_SIZE (h, | |
2956 | (H_GET_SYMBOL_COUNT (h) | |
2957 | + glue_symbols (&symbol_globalP, | |
2958 | &symbol_global_lastP) | |
2959 | + glue_symbols (&symbol_externP, | |
2960 | &symbol_extern_lastP))); | |
2961 | ||
2962 | H_SET_SYMBOL_TABLE_SIZE (h, tie_tags ()); | |
2963 | know (symbol_globalP == NULL); | |
2964 | know (symbol_global_lastP == NULL); | |
2965 | know (symbol_externP == NULL); | |
2966 | know (symbol_extern_lastP == NULL); | |
2967 | } | |
2968 | ||
2969 | /* | |
2970 | * Find strings by crawling along symbol table chain. | |
2971 | */ | |
2972 | ||
2973 | void | |
2974 | w_strings (where) | |
2975 | char *where; | |
2976 | { | |
2977 | symbolS *symbolP; | |
2978 | struct filename_list *filename_list_scan = filename_list_head; | |
2979 | ||
2980 | /* Gotta do md_ byte-ordering stuff for string_byte_count first - KWK */ | |
2981 | md_number_to_chars (where, (valueT) string_byte_count, 4); | |
2982 | where += 4; | |
2983 | ||
2984 | #ifdef COFF_LONG_SECTION_NAMES | |
2985 | /* Support long section names as found in PE. This code must | |
2986 | coordinate with that in coff_header_append and write_object_file. */ | |
2987 | { | |
2988 | unsigned int i; | |
2989 | ||
2990 | for (i = SEG_E0; i < SEG_LAST; i++) | |
2991 | { | |
2992 | if (segment_info[i].scnhdr.s_name[0] | |
2993 | && strlen (segment_info[i].name) > SCNNMLEN) | |
2994 | { | |
2995 | unsigned int size; | |
2996 | ||
2997 | size = strlen (segment_info[i].name) + 1; | |
2998 | memcpy (where, segment_info[i].name, size); | |
2999 | where += size; | |
3000 | } | |
3001 | } | |
3002 | } | |
3003 | #endif /* COFF_LONG_SECTION_NAMES */ | |
3004 | ||
3005 | for (symbolP = symbol_rootP; | |
3006 | symbolP; | |
3007 | symbolP = symbol_next (symbolP)) | |
3008 | { | |
3009 | unsigned int size; | |
3010 | ||
3011 | if (SF_GET_STRING (symbolP)) | |
3012 | { | |
3013 | size = strlen (S_GET_NAME (symbolP)) + 1; | |
3014 | memcpy (where, S_GET_NAME (symbolP), size); | |
3015 | where += size; | |
3016 | } | |
3017 | if (S_GET_STORAGE_CLASS (symbolP) == C_FILE | |
3018 | && SA_GET_FILE_FNAME_ZEROS (symbolP) == 0 | |
3019 | && SA_GET_FILE_FNAME_OFFSET (symbolP) != 0) | |
3020 | { | |
3021 | size = strlen (filename_list_scan->filename) + 1; | |
3022 | memcpy (where, filename_list_scan->filename, size); | |
3023 | filename_list_scan = filename_list_scan ->next; | |
3024 | where += size; | |
3025 | } | |
3026 | } | |
3027 | } | |
3028 | ||
3029 | static void | |
3030 | do_linenos_for (abfd, h, file_cursor) | |
3031 | bfd * abfd; | |
3032 | object_headers * h; | |
3033 | unsigned long *file_cursor; | |
3034 | { | |
3035 | unsigned int idx; | |
3036 | unsigned long start = *file_cursor; | |
3037 | ||
3038 | for (idx = SEG_E0; idx < SEG_LAST; idx++) | |
3039 | { | |
3040 | segment_info_type *s = segment_info + idx; | |
3041 | ||
3042 | ||
3043 | if (s->scnhdr.s_nlnno != 0) | |
3044 | { | |
3045 | struct lineno_list *line_ptr; | |
3046 | ||
3047 | struct external_lineno *buffer = | |
3048 | (struct external_lineno *) xmalloc (s->scnhdr.s_nlnno * LINESZ); | |
3049 | ||
3050 | struct external_lineno *dst = buffer; | |
3051 | ||
3052 | /* Run through the table we've built and turn it into its external | |
3053 | form, take this chance to remove duplicates */ | |
3054 | ||
3055 | for (line_ptr = s->lineno_list_head; | |
3056 | line_ptr != (struct lineno_list *) NULL; | |
3057 | line_ptr = line_ptr->next) | |
3058 | { | |
3059 | ||
3060 | if (line_ptr->line.l_lnno == 0) | |
3061 | { | |
3062 | /* Turn a pointer to a symbol into the symbols' index */ | |
3063 | line_ptr->line.l_addr.l_symndx = | |
3064 | ((symbolS *) line_ptr->line.l_addr.l_symndx)->sy_number; | |
3065 | } | |
3066 | else | |
3067 | { | |
3068 | line_ptr->line.l_addr.l_paddr += ((struct frag *) (line_ptr->frag))->fr_address; | |
3069 | } | |
3070 | ||
3071 | ||
3072 | (void) bfd_coff_swap_lineno_out (abfd, &(line_ptr->line), dst); | |
3073 | dst++; | |
3074 | ||
3075 | } | |
3076 | ||
3077 | s->scnhdr.s_lnnoptr = *file_cursor; | |
3078 | ||
3079 | bfd_write (buffer, 1, s->scnhdr.s_nlnno * LINESZ, abfd); | |
3080 | free (buffer); | |
3081 | ||
3082 | *file_cursor += s->scnhdr.s_nlnno * LINESZ; | |
3083 | } | |
3084 | } | |
3085 | H_SET_LINENO_SIZE (h, *file_cursor - start); | |
3086 | } | |
3087 | ||
3088 | ||
3089 | /* Now we run through the list of frag chains in a segment and | |
3090 | make all the subsegment frags appear at the end of the | |
3091 | list, as if the seg 0 was extra long */ | |
3092 | ||
3093 | static void | |
3094 | remove_subsegs () | |
3095 | { | |
3096 | unsigned int i; | |
3097 | ||
3098 | for (i = SEG_E0; i < SEG_UNKNOWN; i++) | |
3099 | { | |
3100 | frchainS *head = segment_info[i].frchainP; | |
3101 | fragS dummy; | |
3102 | fragS *prev_frag = &dummy; | |
3103 | ||
3104 | while (head && head->frch_seg == i) | |
3105 | { | |
3106 | prev_frag->fr_next = head->frch_root; | |
3107 | prev_frag = head->frch_last; | |
3108 | head = head->frch_next; | |
3109 | } | |
3110 | prev_frag->fr_next = 0; | |
3111 | } | |
3112 | } | |
3113 | ||
3114 | unsigned long machine; | |
3115 | int coff_flags; | |
3116 | extern void | |
3117 | write_object_file () | |
3118 | { | |
3119 | int i; | |
3120 | const char *name; | |
3121 | struct frchain *frchain_ptr; | |
3122 | ||
3123 | object_headers headers; | |
3124 | unsigned long file_cursor; | |
3125 | bfd *abfd; | |
3126 | unsigned int addr; | |
3127 | abfd = bfd_openw (out_file_name, TARGET_FORMAT); | |
3128 | ||
3129 | ||
3130 | if (abfd == 0) | |
3131 | { | |
3132 | as_perror ("FATAL: Can't create %s", out_file_name); | |
3133 | exit (EXIT_FAILURE); | |
3134 | } | |
3135 | bfd_set_format (abfd, bfd_object); | |
3136 | bfd_set_arch_mach (abfd, BFD_ARCH, machine); | |
3137 | ||
3138 | string_byte_count = 4; | |
3139 | ||
3140 | for (frchain_ptr = frchain_root; | |
3141 | frchain_ptr != (struct frchain *) NULL; | |
3142 | frchain_ptr = frchain_ptr->frch_next) | |
3143 | { | |
3144 | /* Run through all the sub-segments and align them up. Also | |
3145 | close any open frags. We tack a .fill onto the end of the | |
3146 | frag chain so that any .align's size can be worked by looking | |
3147 | at the next frag. */ | |
3148 | ||
3149 | subseg_set (frchain_ptr->frch_seg, frchain_ptr->frch_subseg); | |
3150 | #ifndef SUB_SEGMENT_ALIGN | |
3151 | #define SUB_SEGMENT_ALIGN(SEG) 1 | |
3152 | #endif | |
3153 | #ifdef md_do_align | |
3154 | { | |
3155 | static char nop = NOP_OPCODE; | |
3156 | md_do_align (SUB_SEGMENT_ALIGN (now_seg), &nop, 1, 0, alignment_done); | |
3157 | } | |
3158 | #endif | |
3159 | frag_align (SUB_SEGMENT_ALIGN (now_seg), NOP_OPCODE, 0); | |
3160 | #ifdef md_do_align | |
3161 | alignment_done: | |
3162 | #endif | |
3163 | frag_wane (frag_now); | |
3164 | frag_now->fr_fix = 0; | |
3165 | know (frag_now->fr_next == NULL); | |
3166 | } | |
3167 | ||
3168 | ||
3169 | remove_subsegs (); | |
3170 | ||
3171 | ||
3172 | for (i = SEG_E0; i < SEG_UNKNOWN; i++) | |
3173 | { | |
3174 | relax_segment (segment_info[i].frchainP->frch_root, i); | |
3175 | } | |
3176 | ||
3177 | H_SET_NUMBER_OF_SECTIONS (&headers, 0); | |
3178 | ||
3179 | /* Find out how big the sections are, and set the addresses. */ | |
3180 | addr = 0; | |
3181 | for (i = SEG_E0; i < SEG_UNKNOWN; i++) | |
3182 | { | |
3183 | long size; | |
3184 | ||
3185 | segment_info[i].scnhdr.s_paddr = addr; | |
3186 | segment_info[i].scnhdr.s_vaddr = addr; | |
3187 | ||
3188 | if (segment_info[i].scnhdr.s_name[0]) | |
3189 | { | |
3190 | H_SET_NUMBER_OF_SECTIONS (&headers, | |
3191 | H_GET_NUMBER_OF_SECTIONS (&headers) + 1); | |
3192 | ||
3193 | #ifdef COFF_LONG_SECTION_NAMES | |
3194 | /* Support long section names as found in PE. This code | |
3195 | must coordinate with that in coff_header_append and | |
3196 | w_strings. */ | |
3197 | { | |
3198 | unsigned int len; | |
3199 | ||
3200 | len = strlen (segment_info[i].name); | |
3201 | if (len > SCNNMLEN) | |
3202 | string_byte_count += len + 1; | |
3203 | } | |
3204 | #endif /* COFF_LONG_SECTION_NAMES */ | |
3205 | } | |
3206 | ||
3207 | size = size_section (abfd, (unsigned int) i); | |
3208 | addr += size; | |
3209 | ||
3210 | /* I think the section alignment is only used on the i960; the | |
3211 | i960 needs it, and it should do no harm on other targets. */ | |
3212 | segment_info[i].scnhdr.s_align = 1 << section_alignment[i]; | |
3213 | ||
3214 | if (i == SEG_E0) | |
3215 | H_SET_TEXT_SIZE (&headers, size); | |
3216 | else if (i == SEG_E1) | |
3217 | H_SET_DATA_SIZE (&headers, size); | |
3218 | else if (i == SEG_E2) | |
3219 | H_SET_BSS_SIZE (&headers, size); | |
3220 | } | |
3221 | ||
3222 | /* Turn the gas native symbol table shape into a coff symbol table */ | |
3223 | crawl_symbols (&headers, abfd); | |
3224 | ||
3225 | if (string_byte_count == 4) | |
3226 | string_byte_count = 0; | |
3227 | ||
3228 | H_SET_STRING_SIZE (&headers, string_byte_count); | |
3229 | ||
3230 | #ifdef tc_frob_file | |
3231 | tc_frob_file (); | |
3232 | #endif | |
3233 | ||
3234 | for (i = SEG_E0; i < SEG_UNKNOWN; i++) | |
3235 | { | |
3236 | fixup_mdeps (segment_info[i].frchainP->frch_root, &headers, i); | |
3237 | fixup_segment (&segment_info[i], i); | |
3238 | } | |
3239 | ||
3240 | /* Look for ".stab" segments and fill in their initial symbols | |
3241 | correctly. */ | |
3242 | for (i = SEG_E0; i < SEG_UNKNOWN; i++) | |
3243 | { | |
3244 | name = segment_info[i].name; | |
3245 | ||
3246 | if (name != NULL | |
3247 | && strncmp (".stab", name, 5) == 0 | |
3248 | && strncmp (".stabstr", name, 8) != 0) | |
3249 | adjust_stab_section (abfd, i); | |
3250 | } | |
3251 | ||
3252 | file_cursor = H_GET_TEXT_FILE_OFFSET (&headers); | |
3253 | ||
3254 | bfd_seek (abfd, (file_ptr) file_cursor, 0); | |
3255 | ||
3256 | /* Plant the data */ | |
3257 | ||
3258 | fill_section (abfd, &headers, &file_cursor); | |
3259 | ||
3260 | do_relocs_for (abfd, &headers, &file_cursor); | |
3261 | ||
3262 | do_linenos_for (abfd, &headers, &file_cursor); | |
3263 | ||
3264 | H_SET_FILE_MAGIC_NUMBER (&headers, COFF_MAGIC); | |
3265 | #ifndef OBJ_COFF_OMIT_TIMESTAMP | |
3266 | H_SET_TIME_STAMP (&headers, (long)time((time_t *)0)); | |
3267 | #else | |
3268 | H_SET_TIME_STAMP (&headers, 0); | |
3269 | #endif | |
3270 | #ifdef TC_COFF_SET_MACHINE | |
3271 | TC_COFF_SET_MACHINE (&headers); | |
3272 | #endif | |
3273 | ||
3274 | #ifndef COFF_FLAGS | |
3275 | #define COFF_FLAGS 0 | |
3276 | #endif | |
3277 | ||
3278 | #ifdef KEEP_RELOC_INFO | |
3279 | H_SET_FLAGS (&headers, ((H_GET_LINENO_SIZE(&headers) ? 0 : F_LNNO) | | |
3280 | COFF_FLAGS | coff_flags)); | |
3281 | #else | |
3282 | H_SET_FLAGS (&headers, ((H_GET_LINENO_SIZE(&headers) ? 0 : F_LNNO) | | |
3283 | (H_GET_RELOCATION_SIZE(&headers) ? 0 : F_RELFLG) | | |
3284 | COFF_FLAGS | coff_flags)); | |
3285 | #endif | |
3286 | ||
3287 | { | |
3288 | unsigned int symtable_size = H_GET_SYMBOL_TABLE_SIZE (&headers); | |
3289 | char *buffer1 = xmalloc (symtable_size + string_byte_count + 1); | |
3290 | ||
3291 | H_SET_SYMBOL_TABLE_POINTER (&headers, bfd_tell (abfd)); | |
3292 | w_symbols (abfd, buffer1, symbol_rootP); | |
3293 | if (string_byte_count > 0) | |
3294 | w_strings (buffer1 + symtable_size); | |
3295 | bfd_write (buffer1, 1, symtable_size + string_byte_count, abfd); | |
3296 | free (buffer1); | |
3297 | } | |
3298 | ||
3299 | coff_header_append (abfd, &headers); | |
3300 | #if 0 | |
3301 | /* Recent changes to write need this, but where it should | |
3302 | go is up to Ken.. */ | |
3303 | if (bfd_close_all_done (abfd) == false) | |
3304 | as_fatal ("Can't close %s: %s", out_file_name, | |
3305 | bfd_errmsg (bfd_get_error ())); | |
3306 | #else | |
3307 | { | |
3308 | extern bfd *stdoutput; | |
3309 | stdoutput = abfd; | |
3310 | } | |
3311 | #endif | |
3312 | ||
3313 | } | |
3314 | ||
3315 | /* Add a new segment. This is called from subseg_new via the | |
3316 | obj_new_segment macro. */ | |
3317 | ||
3318 | segT | |
3319 | obj_coff_add_segment (name) | |
3320 | const char *name; | |
3321 | { | |
3322 | unsigned int i; | |
3323 | ||
3324 | #ifndef COFF_LONG_SECTION_NAMES | |
3325 | char buf[SCNNMLEN + 1]; | |
3326 | ||
3327 | strncpy (buf, name, SCNNMLEN); | |
3328 | buf[SCNNMLEN] = '\0'; | |
3329 | name = buf; | |
3330 | #endif | |
3331 | ||
3332 | for (i = SEG_E0; i < SEG_LAST && segment_info[i].scnhdr.s_name[0]; i++) | |
3333 | if (strcmp (name, segment_info[i].name) == 0) | |
3334 | return (segT) i; | |
3335 | ||
3336 | if (i == SEG_LAST) | |
3337 | { | |
3338 | as_bad ("Too many new sections; can't add \"%s\"", name); | |
3339 | return now_seg; | |
3340 | } | |
3341 | ||
3342 | /* Add a new section. */ | |
3343 | strncpy (segment_info[i].scnhdr.s_name, name, | |
3344 | sizeof (segment_info[i].scnhdr.s_name)); | |
3345 | segment_info[i].scnhdr.s_flags = STYP_REG; | |
3346 | segment_info[i].name = xstrdup (name); | |
3347 | ||
3348 | return (segT) i; | |
3349 | } | |
3350 | ||
3351 | /* | |
3352 | * implement the .section pseudo op: | |
3353 | * .section name {, "flags"} | |
3354 | * ^ ^ | |
3355 | * | +--- optional flags: 'b' for bss | |
3356 | * | 'i' for info | |
3357 | * +-- section name 'l' for lib | |
3358 | * 'n' for noload | |
3359 | * 'o' for over | |
3360 | * 'w' for data | |
3361 | * 'd' (apparently m88k for data) | |
3362 | * 'x' for text | |
3363 | * 'r' for read-only data | |
3364 | * But if the argument is not a quoted string, treat it as a | |
3365 | * subsegment number. | |
3366 | */ | |
3367 | ||
3368 | void | |
3369 | obj_coff_section (ignore) | |
3370 | int ignore; | |
3371 | { | |
3372 | /* Strip out the section name */ | |
3373 | char *section_name, *name; | |
3374 | char c; | |
3375 | unsigned int exp; | |
3376 | long flags; | |
3377 | ||
3378 | if (flag_mri) | |
3379 | { | |
3380 | char type; | |
3381 | ||
3382 | s_mri_sect (&type); | |
3383 | flags = 0; | |
3384 | if (type == 'C') | |
3385 | flags = STYP_TEXT; | |
3386 | else if (type == 'D') | |
3387 | flags = STYP_DATA; | |
3388 | segment_info[now_seg].scnhdr.s_flags |= flags; | |
3389 | ||
3390 | return; | |
3391 | } | |
3392 | ||
3393 | section_name = input_line_pointer; | |
3394 | c = get_symbol_end (); | |
3395 | ||
3396 | name = xmalloc (input_line_pointer - section_name + 1); | |
3397 | strcpy (name, section_name); | |
3398 | ||
3399 | *input_line_pointer = c; | |
3400 | ||
3401 | exp = 0; | |
3402 | flags = 0; | |
3403 | ||
3404 | SKIP_WHITESPACE (); | |
3405 | if (*input_line_pointer == ',') | |
3406 | { | |
3407 | ++input_line_pointer; | |
3408 | SKIP_WHITESPACE (); | |
3409 | ||
3410 | if (*input_line_pointer != '"') | |
3411 | exp = get_absolute_expression (); | |
3412 | else | |
3413 | { | |
3414 | ++input_line_pointer; | |
3415 | while (*input_line_pointer != '"' | |
3416 | && ! is_end_of_line[(unsigned char) *input_line_pointer]) | |
3417 | { | |
3418 | switch (*input_line_pointer) | |
3419 | { | |
3420 | case 'b': flags |= STYP_BSS; break; | |
3421 | case 'i': flags |= STYP_INFO; break; | |
3422 | case 'l': flags |= STYP_LIB; break; | |
3423 | case 'n': flags |= STYP_NOLOAD; break; | |
3424 | case 'o': flags |= STYP_OVER; break; | |
3425 | case 'd': | |
3426 | case 'w': flags |= STYP_DATA; break; | |
3427 | case 'x': flags |= STYP_TEXT; break; | |
3428 | case 'r': flags |= STYP_LIT; break; | |
3429 | default: | |
3430 | as_warn("unknown section attribute '%c'", | |
3431 | *input_line_pointer); | |
3432 | break; | |
3433 | } | |
3434 | ++input_line_pointer; | |
3435 | } | |
3436 | if (*input_line_pointer == '"') | |
3437 | ++input_line_pointer; | |
3438 | } | |
3439 | } | |
3440 | ||
3441 | subseg_new (name, (subsegT) exp); | |
3442 | ||
3443 | segment_info[now_seg].scnhdr.s_flags |= flags; | |
3444 | ||
3445 | demand_empty_rest_of_line (); | |
3446 | } | |
3447 | ||
3448 | ||
3449 | static void | |
3450 | obj_coff_text (ignore) | |
3451 | int ignore; | |
3452 | { | |
3453 | subseg_new (".text", get_absolute_expression ()); | |
3454 | } | |
3455 | ||
3456 | ||
3457 | static void | |
3458 | obj_coff_data (ignore) | |
3459 | int ignore; | |
3460 | { | |
3461 | if (flag_readonly_data_in_text) | |
3462 | subseg_new (".text", get_absolute_expression () + 1000); | |
3463 | else | |
3464 | subseg_new (".data", get_absolute_expression ()); | |
3465 | } | |
3466 | ||
3467 | static void | |
3468 | obj_coff_bss (ignore) | |
3469 | int ignore; | |
3470 | { | |
3471 | if (*input_line_pointer == '\n') /* .bss */ | |
3472 | subseg_new(".bss", get_absolute_expression()); | |
3473 | else /* .bss id,expr */ | |
3474 | obj_coff_lcomm(0); | |
3475 | } | |
3476 | ||
3477 | static void | |
3478 | obj_coff_ident (ignore) | |
3479 | int ignore; | |
3480 | { | |
3481 | segT current_seg = now_seg; /* save current seg */ | |
3482 | subsegT current_subseg = now_subseg; | |
3483 | subseg_new (".comment", 0); /* .comment seg */ | |
3484 | stringer (1); /* read string */ | |
3485 | subseg_set (current_seg, current_subseg); /* restore current seg */ | |
3486 | } | |
3487 | ||
3488 | void | |
3489 | c_symbol_merge (debug, normal) | |
3490 | symbolS *debug; | |
3491 | symbolS *normal; | |
3492 | { | |
3493 | S_SET_DATA_TYPE (normal, S_GET_DATA_TYPE (debug)); | |
3494 | S_SET_STORAGE_CLASS (normal, S_GET_STORAGE_CLASS (debug)); | |
3495 | ||
3496 | if (S_GET_NUMBER_AUXILIARY (debug) > S_GET_NUMBER_AUXILIARY (normal)) | |
3497 | { | |
3498 | S_SET_NUMBER_AUXILIARY (normal, S_GET_NUMBER_AUXILIARY (debug)); | |
3499 | } /* take the most we have */ | |
3500 | ||
3501 | if (S_GET_NUMBER_AUXILIARY (debug) > 0) | |
3502 | { | |
3503 | memcpy ((char *) &normal->sy_symbol.ost_auxent[0], | |
3504 | (char *) &debug->sy_symbol.ost_auxent[0], | |
3505 | (unsigned int) (S_GET_NUMBER_AUXILIARY (debug) * AUXESZ)); | |
3506 | } /* Move all the auxiliary information */ | |
3507 | ||
3508 | /* Move the debug flags. */ | |
3509 | SF_SET_DEBUG_FIELD (normal, SF_GET_DEBUG_FIELD (debug)); | |
3510 | } /* c_symbol_merge() */ | |
3511 | ||
3512 | static int | |
3513 | c_line_new (symbol, paddr, line_number, frag) | |
3514 | symbolS * symbol; | |
3515 | long paddr; | |
3516 | int line_number; | |
3517 | fragS * frag; | |
3518 | { | |
3519 | struct lineno_list *new_line = | |
3520 | (struct lineno_list *) xmalloc (sizeof (struct lineno_list)); | |
3521 | ||
3522 | segment_info_type *s = segment_info + now_seg; | |
3523 | new_line->line.l_lnno = line_number; | |
3524 | ||
3525 | if (line_number == 0) | |
3526 | { | |
3527 | last_line_symbol = symbol; | |
3528 | new_line->line.l_addr.l_symndx = (long) symbol; | |
3529 | } | |
3530 | else | |
3531 | { | |
3532 | new_line->line.l_addr.l_paddr = paddr; | |
3533 | } | |
3534 | ||
3535 | new_line->frag = (char *) frag; | |
3536 | new_line->next = (struct lineno_list *) NULL; | |
3537 | ||
3538 | ||
3539 | if (s->lineno_list_head == (struct lineno_list *) NULL) | |
3540 | { | |
3541 | s->lineno_list_head = new_line; | |
3542 | } | |
3543 | else | |
3544 | { | |
3545 | s->lineno_list_tail->next = new_line; | |
3546 | } | |
3547 | s->lineno_list_tail = new_line; | |
3548 | return LINESZ * s->scnhdr.s_nlnno++; | |
3549 | } | |
3550 | ||
3551 | void | |
3552 | c_dot_file_symbol (filename) | |
3553 | char *filename; | |
3554 | { | |
3555 | symbolS *symbolP; | |
3556 | ||
3557 | symbolP = symbol_new (".file", | |
3558 | SEG_DEBUG, | |
3559 | 0, | |
3560 | &zero_address_frag); | |
3561 | ||
3562 | S_SET_STORAGE_CLASS (symbolP, C_FILE); | |
3563 | S_SET_NUMBER_AUXILIARY (symbolP, 1); | |
3564 | ||
3565 | if (strlen (filename) > FILNMLEN) | |
3566 | { | |
3567 | /* Filename is too long to fit into an auxent, | |
3568 | we stick it into the string table instead. We keep | |
3569 | a linked list of the filenames we find so we can emit | |
3570 | them later.*/ | |
3571 | struct filename_list *f = ((struct filename_list *) | |
3572 | xmalloc (sizeof (struct filename_list))); | |
3573 | ||
3574 | f->filename = filename; | |
3575 | f->next = 0; | |
3576 | ||
3577 | SA_SET_FILE_FNAME_ZEROS (symbolP, 0); | |
3578 | SA_SET_FILE_FNAME_OFFSET (symbolP, 1); | |
3579 | ||
3580 | if (filename_list_tail) | |
3581 | filename_list_tail->next = f; | |
3582 | else | |
3583 | filename_list_head = f; | |
3584 | filename_list_tail = f; | |
3585 | } | |
3586 | else | |
3587 | { | |
3588 | SA_SET_FILE_FNAME (symbolP, filename); | |
3589 | } | |
3590 | #ifndef NO_LISTING | |
3591 | { | |
3592 | extern int listing; | |
3593 | if (listing) | |
3594 | { | |
3595 | listing_source_file (filename); | |
3596 | } | |
3597 | ||
3598 | } | |
3599 | ||
3600 | #endif | |
3601 | SF_SET_DEBUG (symbolP); | |
3602 | S_SET_VALUE (symbolP, (valueT) previous_file_symbol); | |
3603 | ||
3604 | previous_file_symbol = symbolP; | |
3605 | ||
3606 | /* Make sure that the symbol is first on the symbol chain */ | |
3607 | if (symbol_rootP != symbolP) | |
3608 | { | |
3609 | if (symbolP == symbol_lastP) | |
3610 | { | |
3611 | symbol_lastP = symbol_lastP->sy_previous; | |
3612 | } /* if it was the last thing on the list */ | |
3613 | ||
3614 | symbol_remove (symbolP, &symbol_rootP, &symbol_lastP); | |
3615 | symbol_insert (symbolP, symbol_rootP, &symbol_rootP, &symbol_lastP); | |
3616 | symbol_rootP = symbolP; | |
3617 | } /* if not first on the list */ | |
3618 | ||
3619 | } /* c_dot_file_symbol() */ | |
3620 | ||
3621 | /* | |
3622 | * Build a 'section static' symbol. | |
3623 | */ | |
3624 | ||
3625 | symbolS * | |
3626 | c_section_symbol (name, idx) | |
3627 | char *name; | |
3628 | int idx; | |
3629 | { | |
3630 | symbolS *symbolP; | |
3631 | ||
3632 | symbolP = symbol_new (name, idx, | |
3633 | 0, | |
3634 | &zero_address_frag); | |
3635 | ||
3636 | S_SET_STORAGE_CLASS (symbolP, C_STAT); | |
3637 | S_SET_NUMBER_AUXILIARY (symbolP, 1); | |
3638 | ||
3639 | SF_SET_STATICS (symbolP); | |
3640 | ||
3641 | #ifdef TE_PE | |
3642 | /* If the .linkonce pseudo-op was used for this section, we must | |
3643 | store the information in the auxiliary entry for the section | |
3644 | symbol. */ | |
3645 | if (segment_info[idx].linkonce != LINKONCE_UNSET) | |
3646 | { | |
3647 | int type; | |
3648 | ||
3649 | switch (segment_info[idx].linkonce) | |
3650 | { | |
3651 | default: | |
3652 | abort (); | |
3653 | case LINKONCE_DISCARD: | |
3654 | type = IMAGE_COMDAT_SELECT_ANY; | |
3655 | break; | |
3656 | case LINKONCE_ONE_ONLY: | |
3657 | type = IMAGE_COMDAT_SELECT_NODUPLICATES; | |
3658 | break; | |
3659 | case LINKONCE_SAME_SIZE: | |
3660 | type = IMAGE_COMDAT_SELECT_SAME_SIZE; | |
3661 | break; | |
3662 | case LINKONCE_SAME_CONTENTS: | |
3663 | type = IMAGE_COMDAT_SELECT_EXACT_MATCH; | |
3664 | break; | |
3665 | } | |
3666 | ||
3667 | SYM_AUXENT (symbolP)->x_scn.x_comdat = type; | |
3668 | } | |
3669 | #endif /* TE_PE */ | |
3670 | ||
3671 | return symbolP; | |
3672 | } /* c_section_symbol() */ | |
3673 | ||
3674 | static void | |
3675 | w_symbols (abfd, where, symbol_rootP) | |
3676 | bfd * abfd; | |
3677 | char *where; | |
3678 | symbolS * symbol_rootP; | |
3679 | { | |
3680 | symbolS *symbolP; | |
3681 | unsigned int i; | |
3682 | ||
3683 | /* First fill in those values we have only just worked out */ | |
3684 | for (i = SEG_E0; i < SEG_LAST; i++) | |
3685 | { | |
3686 | symbolP = segment_info[i].dot; | |
3687 | if (symbolP) | |
3688 | { | |
3689 | SA_SET_SCN_SCNLEN (symbolP, segment_info[i].scnhdr.s_size); | |
3690 | SA_SET_SCN_NRELOC (symbolP, segment_info[i].scnhdr.s_nreloc); | |
3691 | SA_SET_SCN_NLINNO (symbolP, segment_info[i].scnhdr.s_nlnno); | |
3692 | } | |
3693 | } | |
3694 | ||
3695 | /* | |
3696 | * Emit all symbols left in the symbol chain. | |
3697 | */ | |
3698 | for (symbolP = symbol_rootP; symbolP; symbolP = symbol_next (symbolP)) | |
3699 | { | |
3700 | /* Used to save the offset of the name. It is used to point | |
3701 | to the string in memory but must be a file offset. */ | |
3702 | register char *temp; | |
3703 | ||
3704 | /* We can't fix the lnnoptr field in yank_symbols with the other | |
3705 | adjustments, because we have to wait until we know where they | |
3706 | go in the file. */ | |
3707 | if (SF_GET_ADJ_LNNOPTR (symbolP)) | |
3708 | { | |
3709 | SA_GET_SYM_LNNOPTR (symbolP) += | |
3710 | segment_info[S_GET_SEGMENT (symbolP)].scnhdr.s_lnnoptr; | |
3711 | } | |
3712 | ||
3713 | tc_coff_symbol_emit_hook (symbolP); | |
3714 | ||
3715 | temp = S_GET_NAME (symbolP); | |
3716 | if (SF_GET_STRING (symbolP)) | |
3717 | { | |
3718 | S_SET_OFFSET (symbolP, symbolP->sy_name_offset); | |
3719 | S_SET_ZEROES (symbolP, 0); | |
3720 | } | |
3721 | else | |
3722 | { | |
3723 | memset (symbolP->sy_symbol.ost_entry.n_name, 0, SYMNMLEN); | |
3724 | strncpy (symbolP->sy_symbol.ost_entry.n_name, temp, SYMNMLEN); | |
3725 | } | |
3726 | where = symbol_to_chars (abfd, where, symbolP); | |
3727 | S_SET_NAME (symbolP, temp); | |
3728 | } | |
3729 | ||
3730 | } /* w_symbols() */ | |
3731 | ||
3732 | static void | |
3733 | obj_coff_lcomm (ignore) | |
3734 | int ignore; | |
3735 | { | |
3736 | s_lcomm(0); | |
3737 | return; | |
3738 | #if 0 | |
3739 | char *name; | |
3740 | char c; | |
3741 | int temp; | |
3742 | char *p; | |
3743 | ||
3744 | symbolS *symbolP; | |
3745 | ||
3746 | name = input_line_pointer; | |
3747 | ||
3748 | c = get_symbol_end (); | |
3749 | p = input_line_pointer; | |
3750 | *p = c; | |
3751 | SKIP_WHITESPACE (); | |
3752 | if (*input_line_pointer != ',') | |
3753 | { | |
3754 | as_bad ("Expected comma after name"); | |
3755 | ignore_rest_of_line (); | |
3756 | return; | |
3757 | } | |
3758 | if (*input_line_pointer == '\n') | |
3759 | { | |
3760 | as_bad ("Missing size expression"); | |
3761 | return; | |
3762 | } | |
3763 | input_line_pointer++; | |
3764 | if ((temp = get_absolute_expression ()) < 0) | |
3765 | { | |
3766 | as_warn ("lcomm length (%d.) <0! Ignored.", temp); | |
3767 | ignore_rest_of_line (); | |
3768 | return; | |
3769 | } | |
3770 | *p = 0; | |
3771 | ||
3772 | symbolP = symbol_find_or_make(name); | |
3773 | ||
3774 | if (S_GET_SEGMENT(symbolP) == SEG_UNKNOWN && | |
3775 | S_GET_VALUE(symbolP) == 0) | |
3776 | { | |
3777 | if (! need_pass_2) | |
3778 | { | |
3779 | char *p; | |
3780 | segT current_seg = now_seg; /* save current seg */ | |
3781 | subsegT current_subseg = now_subseg; | |
3782 | ||
3783 | subseg_set (SEG_E2, 1); | |
3784 | symbolP->sy_frag = frag_now; | |
3785 | p = frag_var(rs_org, 1, 1, (relax_substateT)0, symbolP, | |
3786 | temp, (char *)0); | |
3787 | *p = 0; | |
3788 | subseg_set (current_seg, current_subseg); /* restore current seg */ | |
3789 | S_SET_SEGMENT(symbolP, SEG_E2); | |
3790 | S_SET_STORAGE_CLASS(symbolP, C_STAT); | |
3791 | } | |
3792 | } | |
3793 | else | |
3794 | as_bad("Symbol %s already defined", name); | |
3795 | ||
3796 | demand_empty_rest_of_line(); | |
3797 | #endif | |
3798 | } | |
3799 | ||
3800 | static void | |
3801 | fixup_mdeps (frags, h, this_segment) | |
3802 | fragS * frags; | |
3803 | object_headers * h; | |
3804 | segT this_segment; | |
3805 | { | |
3806 | subseg_change (this_segment, 0); | |
3807 | while (frags) | |
3808 | { | |
3809 | switch (frags->fr_type) | |
3810 | { | |
3811 | case rs_align: | |
3812 | case rs_align_code: | |
3813 | case rs_org: | |
3814 | #ifdef HANDLE_ALIGN | |
3815 | HANDLE_ALIGN (frags); | |
3816 | #endif | |
3817 | frags->fr_type = rs_fill; | |
3818 | frags->fr_offset = | |
3819 | ((frags->fr_next->fr_address - frags->fr_address - frags->fr_fix) | |
3820 | / frags->fr_var); | |
3821 | break; | |
3822 | case rs_machine_dependent: | |
3823 | md_convert_frag (h, this_segment, frags); | |
3824 | frag_wane (frags); | |
3825 | break; | |
3826 | default: | |
3827 | ; | |
3828 | } | |
3829 | frags = frags->fr_next; | |
3830 | } | |
3831 | } | |
3832 | ||
3833 | #if 1 | |
3834 | ||
3835 | #ifndef TC_FORCE_RELOCATION | |
3836 | #define TC_FORCE_RELOCATION(fix) 0 | |
3837 | #endif | |
3838 | ||
3839 | static void | |
3840 | fixup_segment (segP, this_segment_type) | |
3841 | segment_info_type * segP; | |
3842 | segT this_segment_type; | |
3843 | { | |
3844 | register fixS * fixP; | |
3845 | register symbolS *add_symbolP; | |
3846 | register symbolS *sub_symbolP; | |
3847 | long add_number; | |
3848 | register int size; | |
3849 | register char *place; | |
3850 | register long where; | |
3851 | register char pcrel; | |
3852 | register fragS *fragP; | |
3853 | register segT add_symbol_segment = absolute_section; | |
3854 | ||
3855 | for (fixP = segP->fix_root; fixP; fixP = fixP->fx_next) | |
3856 | { | |
3857 | fragP = fixP->fx_frag; | |
3858 | know (fragP); | |
3859 | where = fixP->fx_where; | |
3860 | place = fragP->fr_literal + where; | |
3861 | size = fixP->fx_size; | |
3862 | add_symbolP = fixP->fx_addsy; | |
3863 | sub_symbolP = fixP->fx_subsy; | |
3864 | add_number = fixP->fx_offset; | |
3865 | pcrel = fixP->fx_pcrel; | |
3866 | ||
3867 | /* We want function-relative stabs to work on systems which | |
3868 | may use a relaxing linker; thus we must handle the sym1-sym2 | |
3869 | fixups function-relative stabs generates. | |
3870 | ||
3871 | Of course, if you actually enable relaxing in the linker, the | |
3872 | line and block scoping information is going to be incorrect | |
3873 | in some cases. The only way to really fix this is to support | |
3874 | a reloc involving the difference of two symbols. */ | |
3875 | if (linkrelax | |
3876 | && (!sub_symbolP || pcrel)) | |
3877 | continue; | |
3878 | ||
3879 | #ifdef TC_I960 | |
3880 | if (fixP->fx_tcbit && SF_GET_CALLNAME (add_symbolP)) | |
3881 | { | |
3882 | /* Relocation should be done via the associated 'bal' entry | |
3883 | point symbol. */ | |
3884 | ||
3885 | if (!SF_GET_BALNAME (tc_get_bal_of_call (add_symbolP))) | |
3886 | { | |
3887 | as_bad_where (fixP->fx_file, fixP->fx_line, | |
3888 | "No 'bal' entry point for leafproc %s", | |
3889 | S_GET_NAME (add_symbolP)); | |
3890 | continue; | |
3891 | } | |
3892 | fixP->fx_addsy = add_symbolP = tc_get_bal_of_call (add_symbolP); | |
3893 | } | |
3894 | #endif | |
3895 | ||
3896 | /* Make sure the symbols have been resolved; this may not have | |
3897 | happened if these are expression symbols. */ | |
3898 | if (add_symbolP != NULL && ! add_symbolP->sy_resolved) | |
3899 | resolve_symbol_value (add_symbolP); | |
3900 | ||
3901 | if (add_symbolP != NULL) | |
3902 | { | |
3903 | /* If this fixup is against a symbol which has been equated | |
3904 | to another symbol, convert it to the other symbol. */ | |
3905 | if (add_symbolP->sy_value.X_op == O_symbol | |
3906 | && (! S_IS_DEFINED (add_symbolP) | |
3907 | || S_IS_COMMON (add_symbolP))) | |
3908 | { | |
3909 | while (add_symbolP->sy_value.X_op == O_symbol | |
3910 | && (! S_IS_DEFINED (add_symbolP) | |
3911 | || S_IS_COMMON (add_symbolP))) | |
3912 | { | |
3913 | symbolS *n; | |
3914 | ||
3915 | /* We must avoid looping, as that can occur with a | |
3916 | badly written program. */ | |
3917 | n = add_symbolP->sy_value.X_add_symbol; | |
3918 | if (n == add_symbolP) | |
3919 | break; | |
3920 | add_number += add_symbolP->sy_value.X_add_number; | |
3921 | add_symbolP = n; | |
3922 | } | |
3923 | fixP->fx_addsy = add_symbolP; | |
3924 | fixP->fx_offset = add_number; | |
3925 | } | |
3926 | } | |
3927 | ||
3928 | if (sub_symbolP != NULL && ! sub_symbolP->sy_resolved) | |
3929 | resolve_symbol_value (sub_symbolP); | |
3930 | ||
3931 | if (add_symbolP != NULL | |
3932 | && add_symbolP->sy_mri_common) | |
3933 | { | |
3934 | know (add_symbolP->sy_value.X_op == O_symbol); | |
3935 | add_number += S_GET_VALUE (add_symbolP); | |
3936 | fixP->fx_offset = add_number; | |
3937 | add_symbolP = fixP->fx_addsy = add_symbolP->sy_value.X_add_symbol; | |
3938 | } | |
3939 | ||
3940 | if (add_symbolP) | |
3941 | { | |
3942 | add_symbol_segment = S_GET_SEGMENT (add_symbolP); | |
3943 | } /* if there is an addend */ | |
3944 | ||
3945 | if (sub_symbolP) | |
3946 | { | |
3947 | if (add_symbolP == NULL || add_symbol_segment == absolute_section) | |
3948 | { | |
3949 | if (add_symbolP != NULL) | |
3950 | { | |
3951 | add_number += S_GET_VALUE (add_symbolP); | |
3952 | add_symbolP = NULL; | |
3953 | fixP->fx_addsy = NULL; | |
3954 | } | |
3955 | ||
3956 | /* It's just -sym. */ | |
3957 | if (S_GET_SEGMENT (sub_symbolP) == absolute_section) | |
3958 | { | |
3959 | add_number -= S_GET_VALUE (sub_symbolP); | |
3960 | fixP->fx_subsy = 0; | |
3961 | fixP->fx_done = 1; | |
3962 | } | |
3963 | else | |
3964 | { | |
3965 | #ifndef TC_M68K | |
3966 | as_bad_where (fixP->fx_file, fixP->fx_line, | |
3967 | "Negative of non-absolute symbol %s", | |
3968 | S_GET_NAME (sub_symbolP)); | |
3969 | #endif | |
3970 | add_number -= S_GET_VALUE (sub_symbolP); | |
3971 | } /* not absolute */ | |
3972 | ||
3973 | /* if sub_symbol is in the same segment that add_symbol | |
3974 | and add_symbol is either in DATA, TEXT, BSS or ABSOLUTE */ | |
3975 | } | |
3976 | else if (S_GET_SEGMENT (sub_symbolP) == add_symbol_segment | |
3977 | && SEG_NORMAL (add_symbol_segment)) | |
3978 | { | |
3979 | /* Difference of 2 symbols from same segment. Can't | |
3980 | make difference of 2 undefineds: 'value' means | |
3981 | something different for N_UNDF. */ | |
3982 | #ifdef TC_I960 | |
3983 | /* Makes no sense to use the difference of 2 arbitrary symbols | |
3984 | as the target of a call instruction. */ | |
3985 | if (fixP->fx_tcbit) | |
3986 | { | |
3987 | as_bad_where (fixP->fx_file, fixP->fx_line, | |
3988 | "callj to difference of 2 symbols"); | |
3989 | } | |
3990 | #endif /* TC_I960 */ | |
3991 | add_number += S_GET_VALUE (add_symbolP) - | |
3992 | S_GET_VALUE (sub_symbolP); | |
3993 | add_symbolP = NULL; | |
3994 | ||
3995 | if (!TC_FORCE_RELOCATION (fixP)) | |
3996 | { | |
3997 | fixP->fx_addsy = NULL; | |
3998 | fixP->fx_subsy = NULL; | |
3999 | fixP->fx_done = 1; | |
4000 | #ifdef TC_M68K /* is this right? */ | |
4001 | pcrel = 0; | |
4002 | fixP->fx_pcrel = 0; | |
4003 | #endif | |
4004 | } | |
4005 | } | |
4006 | else | |
4007 | { | |
4008 | /* Different segments in subtraction. */ | |
4009 | know (!(S_IS_EXTERNAL (sub_symbolP) && (S_GET_SEGMENT (sub_symbolP) == absolute_section))); | |
4010 | ||
4011 | if ((S_GET_SEGMENT (sub_symbolP) == absolute_section)) | |
4012 | { | |
4013 | add_number -= S_GET_VALUE (sub_symbolP); | |
4014 | } | |
4015 | #ifdef DIFF_EXPR_OK | |
4016 | else if (S_GET_SEGMENT (sub_symbolP) == this_segment_type | |
4017 | #if 0 /* Okay for 68k, at least... */ | |
4018 | && !pcrel | |
4019 | #endif | |
4020 | ) | |
4021 | { | |
4022 | /* Make it pc-relative. */ | |
4023 | add_number += (md_pcrel_from (fixP) | |
4024 | - S_GET_VALUE (sub_symbolP)); | |
4025 | pcrel = 1; | |
4026 | fixP->fx_pcrel = 1; | |
4027 | sub_symbolP = 0; | |
4028 | fixP->fx_subsy = 0; | |
4029 | } | |
4030 | #endif | |
4031 | else | |
4032 | { | |
4033 | as_bad_where (fixP->fx_file, fixP->fx_line, | |
4034 | "Can't emit reloc {- %s-seg symbol \"%s\"} @ file address %ld.", | |
4035 | segment_name (S_GET_SEGMENT (sub_symbolP)), | |
4036 | S_GET_NAME (sub_symbolP), | |
4037 | (long) (fragP->fr_address + where)); | |
4038 | } /* if absolute */ | |
4039 | } | |
4040 | } /* if sub_symbolP */ | |
4041 | ||
4042 | if (add_symbolP) | |
4043 | { | |
4044 | if (add_symbol_segment == this_segment_type && pcrel) | |
4045 | { | |
4046 | /* | |
4047 | * This fixup was made when the symbol's segment was | |
4048 | * SEG_UNKNOWN, but it is now in the local segment. | |
4049 | * So we know how to do the address without relocation. | |
4050 | */ | |
4051 | #ifdef TC_I960 | |
4052 | /* reloc_callj() may replace a 'call' with a 'calls' or a 'bal', | |
4053 | * in which cases it modifies *fixP as appropriate. In the case | |
4054 | * of a 'calls', no further work is required, and *fixP has been | |
4055 | * set up to make the rest of the code below a no-op. | |
4056 | */ | |
4057 | reloc_callj (fixP); | |
4058 | #endif /* TC_I960 */ | |
4059 | ||
4060 | add_number += S_GET_VALUE (add_symbolP); | |
4061 | add_number -= md_pcrel_from (fixP); | |
4062 | #if defined (TC_I386) || defined (TE_LYNX) | |
4063 | /* On the 386 we must adjust by the segment vaddr as | |
4064 | well. Ian Taylor. */ | |
4065 | add_number -= segP->scnhdr.s_vaddr; | |
4066 | #endif | |
4067 | pcrel = 0; /* Lie. Don't want further pcrel processing. */ | |
4068 | if (!TC_FORCE_RELOCATION (fixP)) | |
4069 | { | |
4070 | fixP->fx_addsy = NULL; | |
4071 | fixP->fx_done = 1; | |
4072 | } | |
4073 | } | |
4074 | else | |
4075 | { | |
4076 | switch (add_symbol_segment) | |
4077 | { | |
4078 | case absolute_section: | |
4079 | #ifdef TC_I960 | |
4080 | reloc_callj (fixP); /* See comment about reloc_callj() above*/ | |
4081 | #endif /* TC_I960 */ | |
4082 | add_number += S_GET_VALUE (add_symbolP); | |
4083 | add_symbolP = NULL; | |
4084 | ||
4085 | if (!TC_FORCE_RELOCATION (fixP)) | |
4086 | { | |
4087 | fixP->fx_addsy = NULL; | |
4088 | fixP->fx_done = 1; | |
4089 | } | |
4090 | break; | |
4091 | default: | |
4092 | ||
4093 | ||
4094 | #if defined(TC_A29K) || (defined(TE_PE) && defined(TC_I386)) || defined(TC_M88K) | |
4095 | /* This really should be handled in the linker, but | |
4096 | backward compatibility forbids. */ | |
4097 | add_number += S_GET_VALUE (add_symbolP); | |
4098 | #else | |
4099 | add_number += S_GET_VALUE (add_symbolP) + | |
4100 | segment_info[S_GET_SEGMENT (add_symbolP)].scnhdr.s_paddr; | |
4101 | #endif | |
4102 | break; | |
4103 | ||
4104 | case SEG_UNKNOWN: | |
4105 | #ifdef TC_I960 | |
4106 | if ((int) fixP->fx_bit_fixP == 13) | |
4107 | { | |
4108 | /* This is a COBR instruction. They have only a | |
4109 | * 13-bit displacement and are only to be used | |
4110 | * for local branches: flag as error, don't generate | |
4111 | * relocation. | |
4112 | */ | |
4113 | as_bad_where (fixP->fx_file, fixP->fx_line, | |
4114 | "can't use COBR format with external label"); | |
4115 | fixP->fx_addsy = NULL; | |
4116 | fixP->fx_done = 1; | |
4117 | continue; | |
4118 | } /* COBR */ | |
4119 | #endif /* TC_I960 */ | |
4120 | #if (defined (TC_I386) || defined (TE_LYNX) || defined (TE_AUX)) && !defined(TE_PE) | |
4121 | /* 386 COFF uses a peculiar format in which the | |
4122 | value of a common symbol is stored in the .text | |
4123 | segment (I've checked this on SVR3.2 and SCO | |
4124 | 3.2.2) Ian Taylor <ian@cygnus.com>. */ | |
4125 | if (S_IS_COMMON (add_symbolP)) | |
4126 | add_number += S_GET_VALUE (add_symbolP); | |
4127 | #endif | |
4128 | break; | |
4129 | ||
4130 | ||
4131 | } /* switch on symbol seg */ | |
4132 | } /* if not in local seg */ | |
4133 | } /* if there was a + symbol */ | |
4134 | ||
4135 | if (pcrel) | |
4136 | { | |
4137 | #if !defined(TC_M88K) && !(defined(TE_PE) && defined(TC_I386)) && !defined(TC_A29K) | |
4138 | /* This adjustment is not correct on the m88k, for which the | |
4139 | linker does all the computation. */ | |
4140 | add_number -= md_pcrel_from (fixP); | |
4141 | #endif | |
4142 | if (add_symbolP == 0) | |
4143 | { | |
4144 | fixP->fx_addsy = &abs_symbol; | |
4145 | } /* if there's an add_symbol */ | |
4146 | #if defined (TC_I386) || defined (TE_LYNX) || defined (TC_I960) || defined (TC_M68K) | |
4147 | /* On the 386 we must adjust by the segment vaddr as well. | |
4148 | Ian Taylor. | |
4149 | ||
4150 | I changed the i960 to work this way as well. This is | |
4151 | compatible with the current GNU linker behaviour. I do | |
4152 | not know what other i960 COFF assemblers do. This is not | |
4153 | a common case: normally, only assembler code will contain | |
4154 | a PC relative reloc, and only branches which do not | |
4155 | originate in the .text section will have a non-zero | |
4156 | address. | |
4157 | ||
4158 | I changed the m68k to work this way as well. This will | |
4159 | break existing PC relative relocs from sections which do | |
4160 | not start at address 0, but it will make ld -r work. | |
4161 | Ian Taylor, 4 Oct 96. */ | |
4162 | ||
4163 | add_number -= segP->scnhdr.s_vaddr; | |
4164 | #endif | |
4165 | } /* if pcrel */ | |
4166 | ||
4167 | if (!fixP->fx_bit_fixP && ! fixP->fx_no_overflow) | |
4168 | { | |
4169 | #ifndef TC_M88K | |
4170 | /* The m88k uses the offset field of the reloc to get around | |
4171 | this problem. */ | |
4172 | if ((size == 1 | |
4173 | && ((add_number & ~0xFF) | |
4174 | || (fixP->fx_signed && (add_number & 0x80))) | |
4175 | && ((add_number & ~0xFF) != (-1 & ~0xFF) | |
4176 | || (add_number & 0x80) == 0)) | |
4177 | || (size == 2 | |
4178 | && ((add_number & ~0xFFFF) | |
4179 | || (fixP->fx_signed && (add_number & 0x8000))) | |
4180 | && ((add_number & ~0xFFFF) != (-1 & ~0xFFFF) | |
4181 | || (add_number & 0x8000) == 0))) | |
4182 | { | |
4183 | as_bad_where (fixP->fx_file, fixP->fx_line, | |
4184 | "Value of %ld too large for field of %d bytes at 0x%lx", | |
4185 | (long) add_number, size, | |
4186 | (unsigned long) (fragP->fr_address + where)); | |
4187 | } | |
4188 | #endif | |
4189 | #ifdef WARN_SIGNED_OVERFLOW_WORD | |
4190 | /* Warn if a .word value is too large when treated as a | |
4191 | signed number. We already know it is not too negative. | |
4192 | This is to catch over-large switches generated by gcc on | |
4193 | the 68k. */ | |
4194 | if (!flag_signed_overflow_ok | |
4195 | && size == 2 | |
4196 | && add_number > 0x7fff) | |
4197 | as_bad_where (fixP->fx_file, fixP->fx_line, | |
4198 | "Signed .word overflow; switch may be too large; %ld at 0x%lx", | |
4199 | (long) add_number, | |
4200 | (unsigned long) (fragP->fr_address + where)); | |
4201 | #endif | |
4202 | } /* not a bit fix */ | |
4203 | /* Once this fix has been applied, we don't have to output | |
4204 | anything nothing more need be done. */ | |
4205 | #ifdef MD_APPLY_FIX3 | |
4206 | md_apply_fix3 (fixP, &add_number, this_segment_type); | |
4207 | #else | |
4208 | md_apply_fix (fixP, add_number); | |
4209 | #endif | |
4210 | } /* For each fixS in this segment. */ | |
4211 | } /* fixup_segment() */ | |
4212 | ||
4213 | #endif | |
4214 | ||
4215 | /* The first entry in a .stab section is special. */ | |
4216 | ||
4217 | void | |
4218 | obj_coff_init_stab_section (seg) | |
4219 | segT seg; | |
4220 | { | |
4221 | char *file; | |
4222 | char *p; | |
4223 | char *stabstr_name; | |
4224 | unsigned int stroff; | |
4225 | ||
4226 | /* Make space for this first symbol. */ | |
4227 | p = frag_more (12); | |
4228 | /* Zero it out. */ | |
4229 | memset (p, 0, 12); | |
4230 | as_where (&file, (unsigned int *) NULL); | |
4231 | stabstr_name = (char *) alloca (strlen (segment_info[seg].name) + 4); | |
4232 | strcpy (stabstr_name, segment_info[seg].name); | |
4233 | strcat (stabstr_name, "str"); | |
4234 | stroff = get_stab_string_offset (file, stabstr_name); | |
4235 | know (stroff == 1); | |
4236 | md_number_to_chars (p, stroff, 4); | |
4237 | } | |
4238 | ||
4239 | /* Fill in the counts in the first entry in a .stab section. */ | |
4240 | ||
4241 | static void | |
4242 | adjust_stab_section(abfd, seg) | |
4243 | bfd *abfd; | |
4244 | segT seg; | |
4245 | { | |
4246 | segT stabstrseg = SEG_UNKNOWN; | |
4247 | const char *secname, *name2; | |
4248 | char *name; | |
4249 | char *p = NULL; | |
4250 | int i, strsz = 0, nsyms; | |
4251 | fragS *frag = segment_info[seg].frchainP->frch_root; | |
4252 | ||
4253 | /* Look for the associated string table section. */ | |
4254 | ||
4255 | secname = segment_info[seg].name; | |
4256 | name = (char *) alloca (strlen (secname) + 4); | |
4257 | strcpy (name, secname); | |
4258 | strcat (name, "str"); | |
4259 | ||
4260 | for (i = SEG_E0; i < SEG_UNKNOWN; i++) | |
4261 | { | |
4262 | name2 = segment_info[i].name; | |
4263 | if (name2 != NULL && strncmp(name2, name, 8) == 0) | |
4264 | { | |
4265 | stabstrseg = i; | |
4266 | break; | |
4267 | } | |
4268 | } | |
4269 | ||
4270 | /* If we found the section, get its size. */ | |
4271 | if (stabstrseg != SEG_UNKNOWN) | |
4272 | strsz = size_section (abfd, stabstrseg); | |
4273 | ||
4274 | nsyms = size_section (abfd, seg) / 12 - 1; | |
4275 | ||
4276 | /* Look for the first frag of sufficient size for the initial stab | |
4277 | symbol, and collect a pointer to it. */ | |
4278 | while (frag && frag->fr_fix < 12) | |
4279 | frag = frag->fr_next; | |
4280 | assert (frag != 0); | |
4281 | p = frag->fr_literal; | |
4282 | assert (p != 0); | |
4283 | ||
4284 | /* Write in the number of stab symbols and the size of the string | |
4285 | table. */ | |
4286 | bfd_h_put_16 (abfd, (bfd_vma) nsyms, (bfd_byte *) p + 6); | |
4287 | bfd_h_put_32 (abfd, (bfd_vma) strsz, (bfd_byte *) p + 8); | |
4288 | } | |
4289 | ||
4290 | #endif /* not BFD_ASSEMBLER */ | |
4291 | ||
4292 | const pseudo_typeS obj_pseudo_table[] = | |
4293 | { | |
4294 | {"def", obj_coff_def, 0}, | |
4295 | {"dim", obj_coff_dim, 0}, | |
4296 | {"endef", obj_coff_endef, 0}, | |
4297 | {"line", obj_coff_line, 0}, | |
4298 | {"ln", obj_coff_ln, 0}, | |
4299 | {"appline", obj_coff_ln, 1}, | |
4300 | {"scl", obj_coff_scl, 0}, | |
4301 | {"size", obj_coff_size, 0}, | |
4302 | {"tag", obj_coff_tag, 0}, | |
4303 | {"type", obj_coff_type, 0}, | |
4304 | {"val", obj_coff_val, 0}, | |
4305 | {"section", obj_coff_section, 0}, | |
4306 | {"sect", obj_coff_section, 0}, | |
4307 | /* FIXME: We ignore the MRI short attribute. */ | |
4308 | {"section.s", obj_coff_section, 0}, | |
4309 | {"sect.s", obj_coff_section, 0}, | |
4310 | #ifndef BFD_ASSEMBLER | |
4311 | {"use", obj_coff_section, 0}, | |
4312 | {"text", obj_coff_text, 0}, | |
4313 | {"data", obj_coff_data, 0}, | |
4314 | {"bss", obj_coff_bss, 0}, | |
4315 | {"lcomm", obj_coff_lcomm, 0}, | |
4316 | {"ident", obj_coff_ident, 0}, | |
4317 | #else | |
4318 | {"optim", s_ignore, 0}, /* For sun386i cc (?) */ | |
4319 | {"ident", s_ignore, 0}, /* we don't yet handle this. */ | |
4320 | #endif | |
4321 | {"version", s_ignore, 0}, | |
4322 | {"ABORT", s_abort, 0}, | |
4323 | #ifdef TC_M88K | |
4324 | /* The m88k uses sdef instead of def. */ | |
4325 | {"sdef", obj_coff_def, 0}, | |
4326 | #endif | |
4327 | {NULL} /* end sentinel */ | |
4328 | }; /* obj_pseudo_table */ | |
4329 | \f | |
4330 | #ifdef BFD_ASSEMBLER | |
4331 | ||
4332 | /* Support for a COFF emulation. */ | |
4333 | ||
4334 | static void | |
4335 | coff_pop_insert () | |
4336 | { | |
4337 | pop_insert (obj_pseudo_table); | |
4338 | } | |
4339 | ||
4340 | static int | |
4341 | coff_sec_sym_ok_for_reloc (sec) | |
4342 | asection *sec; | |
4343 | { | |
4344 | return 0; | |
4345 | } | |
4346 | ||
4347 | static void | |
4348 | no_func () | |
4349 | { | |
4350 | abort (); | |
4351 | } | |
4352 | ||
4353 | const struct format_ops coff_format_ops = | |
4354 | { | |
4355 | bfd_target_coff_flavour, | |
4356 | 0, | |
4357 | 1, | |
4358 | coff_frob_symbol, | |
4359 | coff_frob_file, | |
4360 | no_func, | |
4361 | 0, 0, | |
4362 | 0, 0, | |
4363 | 0, | |
4364 | #if 0 | |
4365 | obj_generate_asm_lineno, | |
4366 | #else | |
4367 | no_func, | |
4368 | #endif | |
4369 | #if 0 | |
4370 | obj_stab, | |
4371 | #else | |
4372 | no_func, | |
4373 | #endif | |
4374 | coff_sec_sym_ok_for_reloc, | |
4375 | coff_pop_insert, | |
4376 | #if 0 | |
4377 | obj_set_ext, | |
4378 | #else | |
4379 | no_func, | |
4380 | #endif | |
4381 | coff_obj_read_begin_hook, | |
4382 | coff_obj_symbol_new_hook, | |
4383 | }; | |
4384 | ||
4385 | #endif |