Commit | Line | Data |
---|---|---|
252b5132 | 1 | /* coff object file format |
49309057 | 2 | Copyright (C) 1989, 90, 91, 92, 93, 94, 95, 96, 97, 98, 1999 |
252b5132 RH |
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 | static void obj_coff_bss PARAMS ((int)); | |
34 | const char *s_get_name PARAMS ((symbolS * s)); | |
35 | static symbolS *def_symbol_in_progress; | |
36 | ||
37 | \f | |
38 | /* stack stuff */ | |
39 | typedef struct | |
40 | { | |
41 | unsigned long chunk_size; | |
42 | unsigned long element_size; | |
43 | unsigned long size; | |
44 | char *data; | |
45 | unsigned long pointer; | |
46 | } | |
47 | stack; | |
48 | ||
49 | static stack * | |
50 | stack_init (chunk_size, element_size) | |
51 | unsigned long chunk_size; | |
52 | unsigned long element_size; | |
53 | { | |
54 | stack *st; | |
55 | ||
56 | st = (stack *) malloc (sizeof (stack)); | |
57 | if (!st) | |
58 | return 0; | |
59 | st->data = malloc (chunk_size); | |
60 | if (!st->data) | |
61 | { | |
62 | free (st); | |
63 | return 0; | |
64 | } | |
65 | st->pointer = 0; | |
66 | st->size = chunk_size; | |
67 | st->chunk_size = chunk_size; | |
68 | st->element_size = element_size; | |
69 | return st; | |
70 | } | |
71 | ||
72 | #if 0 | |
73 | /* Not currently used. */ | |
74 | static void | |
75 | stack_delete (st) | |
76 | stack *st; | |
77 | { | |
78 | free (st->data); | |
79 | free (st); | |
80 | } | |
81 | #endif | |
82 | ||
83 | static char * | |
84 | stack_push (st, element) | |
85 | stack *st; | |
86 | char *element; | |
87 | { | |
88 | if (st->pointer + st->element_size >= st->size) | |
89 | { | |
90 | st->size += st->chunk_size; | |
91 | if ((st->data = xrealloc (st->data, st->size)) == (char *) 0) | |
92 | return (char *) 0; | |
93 | } | |
94 | memcpy (st->data + st->pointer, element, st->element_size); | |
95 | st->pointer += st->element_size; | |
96 | return st->data + st->pointer; | |
97 | } | |
98 | ||
99 | static char * | |
100 | stack_pop (st) | |
101 | stack *st; | |
102 | { | |
103 | if (st->pointer < st->element_size) | |
104 | { | |
105 | st->pointer = 0; | |
106 | return (char *) 0; | |
107 | } | |
108 | st->pointer -= st->element_size; | |
109 | return st->data + st->pointer; | |
110 | } | |
111 | \f | |
112 | /* | |
113 | * Maintain a list of the tagnames of the structres. | |
114 | */ | |
115 | ||
116 | static struct hash_control *tag_hash; | |
117 | ||
118 | static void | |
119 | tag_init () | |
120 | { | |
121 | tag_hash = hash_new (); | |
122 | } | |
123 | ||
124 | static void | |
125 | tag_insert (name, symbolP) | |
126 | const char *name; | |
127 | symbolS *symbolP; | |
128 | { | |
129 | const char *error_string; | |
130 | ||
131 | if ((error_string = hash_jam (tag_hash, name, (char *) symbolP))) | |
132 | { | |
133 | as_fatal (_("Inserting \"%s\" into structure table failed: %s"), | |
134 | name, error_string); | |
135 | } | |
136 | } | |
137 | ||
138 | static symbolS * | |
139 | tag_find (name) | |
140 | char *name; | |
141 | { | |
142 | #ifdef STRIP_UNDERSCORE | |
143 | if (*name == '_') | |
144 | name++; | |
145 | #endif /* STRIP_UNDERSCORE */ | |
146 | return (symbolS *) hash_find (tag_hash, name); | |
147 | } | |
148 | ||
149 | static symbolS * | |
150 | tag_find_or_make (name) | |
151 | char *name; | |
152 | { | |
153 | symbolS *symbolP; | |
154 | ||
155 | if ((symbolP = tag_find (name)) == NULL) | |
156 | { | |
157 | symbolP = symbol_new (name, undefined_section, | |
158 | 0, &zero_address_frag); | |
159 | ||
160 | tag_insert (S_GET_NAME (symbolP), symbolP); | |
161 | #ifdef BFD_ASSEMBLER | |
162 | symbol_table_insert (symbolP); | |
163 | #endif | |
164 | } /* not found */ | |
165 | ||
166 | return symbolP; | |
167 | } | |
168 | ||
169 | /* We accept the .bss directive to set the section for backward | |
170 | compatibility with earlier versions of gas. */ | |
171 | ||
172 | static void | |
173 | obj_coff_bss (ignore) | |
174 | int ignore; | |
175 | { | |
176 | if (*input_line_pointer == '\n') | |
177 | subseg_new (".bss", get_absolute_expression ()); | |
178 | else | |
179 | s_lcomm (0); | |
180 | } | |
181 | ||
182 | /* Handle .weak. This is a GNU extension. */ | |
183 | ||
184 | static void | |
185 | obj_coff_weak (ignore) | |
186 | int ignore; | |
187 | { | |
188 | char *name; | |
189 | int c; | |
190 | symbolS *symbolP; | |
191 | ||
192 | do | |
193 | { | |
194 | name = input_line_pointer; | |
195 | c = get_symbol_end (); | |
196 | symbolP = symbol_find_or_make (name); | |
197 | *input_line_pointer = c; | |
198 | SKIP_WHITESPACE (); | |
199 | ||
200 | #ifdef BFD_ASSEMLER | |
201 | S_SET_WEAK (symbolP); | |
202 | #endif | |
203 | ||
204 | #ifdef TE_PE | |
205 | S_SET_STORAGE_CLASS (symbolP, C_NT_WEAK); | |
206 | #else | |
207 | S_SET_STORAGE_CLASS (symbolP, C_WEAKEXT); | |
208 | #endif | |
209 | ||
210 | if (c == ',') | |
211 | { | |
212 | input_line_pointer++; | |
213 | SKIP_WHITESPACE (); | |
214 | if (*input_line_pointer == '\n') | |
215 | c = '\n'; | |
216 | } | |
217 | } | |
218 | while (c == ','); | |
219 | ||
220 | demand_empty_rest_of_line (); | |
221 | } | |
222 | ||
223 | #ifdef BFD_ASSEMBLER | |
224 | ||
225 | static void SA_SET_SYM_TAGNDX PARAMS ((symbolS *, symbolS *)); | |
226 | ||
227 | #define GET_FILENAME_STRING(X) \ | |
228 | ((char*)(&((X)->sy_symbol.ost_auxent->x_file.x_n.x_offset))[1]) | |
229 | ||
230 | /* @@ Ick. */ | |
231 | static segT | |
232 | fetch_coff_debug_section () | |
233 | { | |
234 | static segT debug_section; | |
235 | if (!debug_section) | |
236 | { | |
237 | CONST asymbol *s; | |
238 | s = bfd_make_debug_symbol (stdoutput, (char *) 0, 0); | |
239 | assert (s != 0); | |
240 | debug_section = s->section; | |
241 | } | |
242 | return debug_section; | |
243 | } | |
244 | ||
245 | void | |
246 | SA_SET_SYM_ENDNDX (sym, val) | |
247 | symbolS *sym; | |
248 | symbolS *val; | |
249 | { | |
250 | combined_entry_type *entry, *p; | |
251 | ||
49309057 ILT |
252 | entry = &coffsymbol (symbol_get_bfdsym (sym))->native[1]; |
253 | p = coffsymbol (symbol_get_bfdsym (val))->native; | |
252b5132 RH |
254 | entry->u.auxent.x_sym.x_fcnary.x_fcn.x_endndx.p = p; |
255 | entry->fix_end = 1; | |
256 | } | |
257 | ||
258 | static void | |
259 | SA_SET_SYM_TAGNDX (sym, val) | |
260 | symbolS *sym; | |
261 | symbolS *val; | |
262 | { | |
263 | combined_entry_type *entry, *p; | |
264 | ||
49309057 ILT |
265 | entry = &coffsymbol (symbol_get_bfdsym (sym))->native[1]; |
266 | p = coffsymbol (symbol_get_bfdsym (val))->native; | |
252b5132 RH |
267 | entry->u.auxent.x_sym.x_tagndx.p = p; |
268 | entry->fix_tag = 1; | |
269 | } | |
270 | ||
271 | static int | |
272 | S_GET_DATA_TYPE (sym) | |
273 | symbolS *sym; | |
274 | { | |
49309057 | 275 | return coffsymbol (symbol_get_bfdsym (sym))->native->u.syment.n_type; |
252b5132 RH |
276 | } |
277 | ||
278 | int | |
279 | S_SET_DATA_TYPE (sym, val) | |
280 | symbolS *sym; | |
281 | int val; | |
282 | { | |
49309057 | 283 | coffsymbol (symbol_get_bfdsym (sym))->native->u.syment.n_type = val; |
252b5132 RH |
284 | return val; |
285 | } | |
286 | ||
287 | int | |
288 | S_GET_STORAGE_CLASS (sym) | |
289 | symbolS *sym; | |
290 | { | |
49309057 | 291 | return coffsymbol (symbol_get_bfdsym (sym))->native->u.syment.n_sclass; |
252b5132 RH |
292 | } |
293 | ||
294 | int | |
295 | S_SET_STORAGE_CLASS (sym, val) | |
296 | symbolS *sym; | |
297 | int val; | |
298 | { | |
49309057 | 299 | coffsymbol (symbol_get_bfdsym (sym))->native->u.syment.n_sclass = val; |
252b5132 RH |
300 | return val; |
301 | } | |
302 | ||
303 | /* Merge a debug symbol containing debug information into a normal symbol. */ | |
304 | ||
305 | void | |
306 | c_symbol_merge (debug, normal) | |
307 | symbolS *debug; | |
308 | symbolS *normal; | |
309 | { | |
310 | S_SET_DATA_TYPE (normal, S_GET_DATA_TYPE (debug)); | |
311 | S_SET_STORAGE_CLASS (normal, S_GET_STORAGE_CLASS (debug)); | |
312 | ||
313 | if (S_GET_NUMBER_AUXILIARY (debug) > S_GET_NUMBER_AUXILIARY (normal)) | |
314 | { | |
315 | /* take the most we have */ | |
316 | S_SET_NUMBER_AUXILIARY (normal, S_GET_NUMBER_AUXILIARY (debug)); | |
317 | } | |
318 | ||
319 | if (S_GET_NUMBER_AUXILIARY (debug) > 0) | |
320 | { | |
321 | /* Move all the auxiliary information. */ | |
322 | memcpy (SYM_AUXINFO (normal), SYM_AUXINFO (debug), | |
323 | (S_GET_NUMBER_AUXILIARY (debug) | |
324 | * sizeof (*SYM_AUXINFO (debug)))); | |
325 | } | |
326 | ||
327 | /* Move the debug flags. */ | |
328 | SF_SET_DEBUG_FIELD (normal, SF_GET_DEBUG_FIELD (debug)); | |
329 | } | |
330 | ||
331 | void | |
332 | c_dot_file_symbol (filename) | |
333 | char *filename; | |
334 | { | |
335 | symbolS *symbolP; | |
336 | ||
337 | symbolP = symbol_new (filename, bfd_abs_section_ptr, 0, &zero_address_frag); | |
338 | ||
339 | S_SET_STORAGE_CLASS (symbolP, C_FILE); | |
340 | S_SET_NUMBER_AUXILIARY (symbolP, 1); | |
341 | ||
49309057 | 342 | symbol_get_bfdsym (symbolP)->flags = BSF_DEBUGGING; |
252b5132 RH |
343 | |
344 | #ifndef NO_LISTING | |
345 | { | |
346 | extern int listing; | |
347 | if (listing) | |
348 | { | |
349 | listing_source_file (filename); | |
350 | } | |
351 | } | |
352 | #endif | |
353 | ||
354 | /* Make sure that the symbol is first on the symbol chain */ | |
355 | if (symbol_rootP != symbolP) | |
356 | { | |
357 | symbol_remove (symbolP, &symbol_rootP, &symbol_lastP); | |
358 | symbol_insert (symbolP, symbol_rootP, &symbol_rootP, &symbol_lastP); | |
359 | } /* if not first on the list */ | |
360 | } | |
361 | ||
362 | /* Line number handling */ | |
363 | ||
364 | struct line_no { | |
365 | struct line_no *next; | |
366 | fragS *frag; | |
367 | alent l; | |
368 | }; | |
369 | ||
370 | int coff_line_base; | |
371 | ||
372 | /* Symbol of last function, which we should hang line#s off of. */ | |
373 | static symbolS *line_fsym; | |
374 | ||
375 | #define in_function() (line_fsym != 0) | |
376 | #define clear_function() (line_fsym = 0) | |
377 | #define set_function(F) (line_fsym = (F), coff_add_linesym (F)) | |
378 | ||
379 | \f | |
380 | void | |
381 | coff_obj_symbol_new_hook (symbolP) | |
382 | symbolS *symbolP; | |
383 | { | |
384 | long sz = (OBJ_COFF_MAX_AUXENTRIES + 1) * sizeof (combined_entry_type); | |
385 | char * s = (char *) xmalloc (sz); | |
386 | ||
387 | memset (s, 0, sz); | |
49309057 | 388 | coffsymbol (symbol_get_bfdsym (symbolP))->native = (combined_entry_type *) s; |
252b5132 RH |
389 | |
390 | S_SET_DATA_TYPE (symbolP, T_NULL); | |
391 | S_SET_STORAGE_CLASS (symbolP, 0); | |
392 | S_SET_NUMBER_AUXILIARY (symbolP, 0); | |
393 | ||
394 | if (S_IS_STRING (symbolP)) | |
395 | SF_SET_STRING (symbolP); | |
396 | ||
397 | if (S_IS_LOCAL (symbolP)) | |
398 | SF_SET_LOCAL (symbolP); | |
399 | } | |
400 | ||
401 | \f | |
402 | /* | |
403 | * Handle .ln directives. | |
404 | */ | |
405 | ||
406 | static symbolS *current_lineno_sym; | |
407 | static struct line_no *line_nos; | |
408 | /* @@ Blindly assume all .ln directives will be in the .text section... */ | |
409 | int coff_n_line_nos; | |
410 | ||
411 | static void | |
412 | add_lineno (frag, offset, num) | |
413 | fragS *frag; | |
414 | int offset; | |
415 | int num; | |
416 | { | |
417 | struct line_no *new_line = | |
418 | (struct line_no *) xmalloc (sizeof (struct line_no)); | |
419 | if (!current_lineno_sym) | |
420 | { | |
421 | abort (); | |
422 | } | |
423 | new_line->next = line_nos; | |
424 | new_line->frag = frag; | |
425 | new_line->l.line_number = num; | |
426 | new_line->l.u.offset = offset; | |
427 | line_nos = new_line; | |
428 | coff_n_line_nos++; | |
429 | } | |
430 | ||
431 | void | |
432 | coff_add_linesym (sym) | |
433 | symbolS *sym; | |
434 | { | |
435 | if (line_nos) | |
436 | { | |
49309057 ILT |
437 | coffsymbol (symbol_get_bfdsym (current_lineno_sym))->lineno = |
438 | (alent *) line_nos; | |
252b5132 RH |
439 | coff_n_line_nos++; |
440 | line_nos = 0; | |
441 | } | |
442 | current_lineno_sym = sym; | |
443 | } | |
444 | ||
445 | static void | |
446 | obj_coff_ln (appline) | |
447 | int appline; | |
448 | { | |
449 | int l; | |
450 | ||
451 | if (! appline && def_symbol_in_progress != NULL) | |
452 | { | |
453 | as_warn (_(".ln pseudo-op inside .def/.endef: ignored.")); | |
454 | demand_empty_rest_of_line (); | |
455 | return; | |
456 | } | |
457 | ||
458 | l = get_absolute_expression (); | |
459 | if (!appline) | |
460 | { | |
461 | add_lineno (frag_now, frag_now_fix (), l); | |
462 | } | |
463 | ||
464 | if (appline) | |
465 | new_logical_line ((char *) NULL, l - 1); | |
466 | ||
467 | #ifndef NO_LISTING | |
468 | { | |
469 | extern int listing; | |
470 | ||
471 | if (listing) | |
472 | { | |
473 | if (! appline) | |
474 | l += coff_line_base - 1; | |
475 | listing_source_line (l); | |
476 | } | |
477 | } | |
478 | #endif | |
479 | ||
480 | demand_empty_rest_of_line (); | |
481 | } | |
482 | ||
483 | /* | |
484 | * def() | |
485 | * | |
486 | * Handle .def directives. | |
487 | * | |
488 | * One might ask : why can't we symbol_new if the symbol does not | |
489 | * already exist and fill it with debug information. Because of | |
490 | * the C_EFCN special symbol. It would clobber the value of the | |
491 | * function symbol before we have a chance to notice that it is | |
492 | * a C_EFCN. And a second reason is that the code is more clear this | |
493 | * way. (at least I think it is :-). | |
494 | * | |
495 | */ | |
496 | ||
497 | #define SKIP_SEMI_COLON() while (*input_line_pointer++ != ';') | |
498 | #define SKIP_WHITESPACES() while (*input_line_pointer == ' ' || \ | |
499 | *input_line_pointer == '\t') \ | |
500 | input_line_pointer++; | |
501 | ||
502 | static void | |
503 | obj_coff_def (what) | |
504 | int what; | |
505 | { | |
506 | char name_end; /* Char after the end of name */ | |
507 | char *symbol_name; /* Name of the debug symbol */ | |
508 | char *symbol_name_copy; /* Temporary copy of the name */ | |
509 | unsigned int symbol_name_length; | |
510 | ||
511 | if (def_symbol_in_progress != NULL) | |
512 | { | |
513 | as_warn (_(".def pseudo-op used inside of .def/.endef: ignored.")); | |
514 | demand_empty_rest_of_line (); | |
515 | return; | |
516 | } /* if not inside .def/.endef */ | |
517 | ||
518 | SKIP_WHITESPACES (); | |
519 | ||
520 | symbol_name = input_line_pointer; | |
521 | #ifdef STRIP_UNDERSCORE | |
522 | if (symbol_name[0] == '_' && symbol_name[1] != 0) | |
523 | symbol_name++; | |
524 | #endif /* STRIP_UNDERSCORE */ | |
525 | ||
526 | name_end = get_symbol_end (); | |
527 | symbol_name_length = strlen (symbol_name); | |
528 | symbol_name_copy = xmalloc (symbol_name_length + 1); | |
529 | strcpy (symbol_name_copy, symbol_name); | |
530 | #ifdef tc_canonicalize_symbol_name | |
531 | symbol_name_copy = tc_canonicalize_symbol_name (symbol_name_copy); | |
532 | #endif | |
533 | ||
534 | /* Initialize the new symbol */ | |
535 | def_symbol_in_progress = symbol_make (symbol_name_copy); | |
49309057 | 536 | symbol_set_frag (def_symbol_in_progress, &zero_address_frag); |
252b5132 RH |
537 | S_SET_VALUE (def_symbol_in_progress, 0); |
538 | ||
539 | if (S_IS_STRING (def_symbol_in_progress)) | |
540 | SF_SET_STRING (def_symbol_in_progress); | |
541 | ||
542 | *input_line_pointer = name_end; | |
543 | ||
544 | demand_empty_rest_of_line (); | |
545 | } | |
546 | ||
547 | unsigned int dim_index; | |
548 | ||
549 | static void | |
550 | obj_coff_endef (ignore) | |
551 | int ignore; | |
552 | { | |
553 | symbolS *symbolP; | |
554 | ||
555 | /* DIM BUG FIX sac@cygnus.com */ | |
556 | dim_index = 0; | |
557 | if (def_symbol_in_progress == NULL) | |
558 | { | |
559 | as_warn (_(".endef pseudo-op used outside of .def/.endef: ignored.")); | |
560 | demand_empty_rest_of_line (); | |
561 | return; | |
562 | } /* if not inside .def/.endef */ | |
563 | ||
564 | /* Set the section number according to storage class. */ | |
565 | switch (S_GET_STORAGE_CLASS (def_symbol_in_progress)) | |
566 | { | |
567 | case C_STRTAG: | |
568 | case C_ENTAG: | |
569 | case C_UNTAG: | |
570 | SF_SET_TAG (def_symbol_in_progress); | |
571 | /* intentional fallthrough */ | |
572 | case C_FILE: | |
573 | case C_TPDEF: | |
574 | SF_SET_DEBUG (def_symbol_in_progress); | |
575 | S_SET_SEGMENT (def_symbol_in_progress, fetch_coff_debug_section ()); | |
576 | break; | |
577 | ||
578 | case C_EFCN: | |
579 | SF_SET_LOCAL (def_symbol_in_progress); /* Do not emit this symbol. */ | |
580 | /* intentional fallthrough */ | |
581 | case C_BLOCK: | |
582 | SF_SET_PROCESS (def_symbol_in_progress); /* Will need processing before writing */ | |
583 | /* intentional fallthrough */ | |
584 | case C_FCN: | |
585 | { | |
586 | CONST char *name; | |
587 | S_SET_SEGMENT (def_symbol_in_progress, text_section); | |
588 | ||
49309057 | 589 | name = S_GET_NAME (def_symbol_in_progress); |
252b5132 RH |
590 | if (name[1] == 'b' && name[2] == 'f') |
591 | { | |
592 | if (! in_function ()) | |
593 | as_warn (_("`%s' symbol without preceding function"), name); | |
594 | /* SA_SET_SYM_LNNO (def_symbol_in_progress, 12345);*/ | |
595 | /* Will need relocating */ | |
596 | SF_SET_PROCESS (def_symbol_in_progress); | |
597 | clear_function (); | |
598 | } | |
599 | } | |
600 | break; | |
601 | ||
602 | #ifdef C_AUTOARG | |
603 | case C_AUTOARG: | |
604 | #endif /* C_AUTOARG */ | |
605 | case C_AUTO: | |
606 | case C_REG: | |
607 | case C_ARG: | |
608 | case C_REGPARM: | |
609 | case C_FIELD: | |
610 | SF_SET_DEBUG (def_symbol_in_progress); | |
611 | S_SET_SEGMENT (def_symbol_in_progress, absolute_section); | |
612 | break; | |
613 | ||
614 | case C_MOS: | |
615 | case C_MOE: | |
616 | case C_MOU: | |
617 | case C_EOS: | |
618 | S_SET_SEGMENT (def_symbol_in_progress, absolute_section); | |
619 | break; | |
620 | ||
621 | case C_EXT: | |
622 | case C_WEAKEXT: | |
623 | #ifdef TE_PE | |
624 | case C_NT_WEAK: | |
625 | #endif | |
626 | case C_STAT: | |
627 | case C_LABEL: | |
628 | /* Valid but set somewhere else (s_comm, s_lcomm, colon) */ | |
629 | break; | |
630 | ||
631 | default: | |
632 | case C_USTATIC: | |
633 | case C_EXTDEF: | |
634 | case C_ULABEL: | |
635 | as_warn (_("unexpected storage class %d"), | |
636 | S_GET_STORAGE_CLASS (def_symbol_in_progress)); | |
637 | break; | |
638 | } /* switch on storage class */ | |
639 | ||
640 | /* Now that we have built a debug symbol, try to find if we should | |
641 | merge with an existing symbol or not. If a symbol is C_EFCN or | |
642 | SEG_ABSOLUTE or untagged SEG_DEBUG it never merges. */ | |
643 | ||
644 | /* Two cases for functions. Either debug followed by definition or | |
645 | definition followed by debug. For definition first, we will | |
646 | merge the debug symbol into the definition. For debug first, the | |
647 | lineno entry MUST point to the definition function or else it | |
648 | will point off into space when obj_crawl_symbol_chain() merges | |
649 | the debug symbol into the real symbol. Therefor, let's presume | |
650 | the debug symbol is a real function reference. */ | |
651 | ||
652 | /* FIXME-SOON If for some reason the definition label/symbol is | |
653 | never seen, this will probably leave an undefined symbol at link | |
654 | time. */ | |
655 | ||
656 | if (S_GET_STORAGE_CLASS (def_symbol_in_progress) == C_EFCN | |
657 | || (!strcmp (bfd_get_section_name (stdoutput, | |
658 | S_GET_SEGMENT (def_symbol_in_progress)), | |
659 | "*DEBUG*") | |
660 | && !SF_GET_TAG (def_symbol_in_progress)) | |
661 | || S_GET_SEGMENT (def_symbol_in_progress) == absolute_section | |
662 | || (symbolP = symbol_find_base (S_GET_NAME (def_symbol_in_progress), DO_NOT_STRIP)) == NULL) | |
663 | { | |
664 | if (def_symbol_in_progress != symbol_lastP) | |
665 | symbol_append (def_symbol_in_progress, symbol_lastP, &symbol_rootP, | |
666 | &symbol_lastP); | |
667 | } | |
668 | else | |
669 | { | |
670 | /* This symbol already exists, merge the newly created symbol | |
671 | into the old one. This is not mandatory. The linker can | |
672 | handle duplicate symbols correctly. But I guess that it save | |
673 | a *lot* of space if the assembly file defines a lot of | |
674 | symbols. [loic] */ | |
675 | ||
676 | /* The debug entry (def_symbol_in_progress) is merged into the | |
677 | previous definition. */ | |
678 | ||
679 | c_symbol_merge (def_symbol_in_progress, symbolP); | |
680 | symbol_remove (def_symbol_in_progress, &symbol_rootP, &symbol_lastP); | |
681 | ||
682 | def_symbol_in_progress = symbolP; | |
683 | ||
684 | if (SF_GET_FUNCTION (def_symbol_in_progress) | |
685 | || SF_GET_TAG (def_symbol_in_progress) | |
686 | || S_GET_STORAGE_CLASS (def_symbol_in_progress) == C_STAT) | |
687 | { | |
688 | /* For functions, and tags, and static symbols, the symbol | |
689 | *must* be where the debug symbol appears. Move the | |
690 | existing symbol to the current place. */ | |
691 | /* If it already is at the end of the symbol list, do nothing */ | |
692 | if (def_symbol_in_progress != symbol_lastP) | |
693 | { | |
694 | symbol_remove (def_symbol_in_progress, &symbol_rootP, &symbol_lastP); | |
695 | symbol_append (def_symbol_in_progress, symbol_lastP, &symbol_rootP, &symbol_lastP); | |
696 | } | |
697 | } | |
698 | } | |
699 | ||
700 | if (SF_GET_TAG (def_symbol_in_progress)) | |
701 | { | |
702 | symbolS *oldtag; | |
703 | ||
704 | oldtag = symbol_find_base (S_GET_NAME (def_symbol_in_progress), | |
705 | DO_NOT_STRIP); | |
706 | if (oldtag == NULL || ! SF_GET_TAG (oldtag)) | |
707 | tag_insert (S_GET_NAME (def_symbol_in_progress), | |
708 | def_symbol_in_progress); | |
709 | } | |
710 | ||
711 | if (SF_GET_FUNCTION (def_symbol_in_progress)) | |
712 | { | |
713 | know (sizeof (def_symbol_in_progress) <= sizeof (long)); | |
714 | set_function (def_symbol_in_progress); | |
715 | SF_SET_PROCESS (def_symbol_in_progress); | |
716 | ||
717 | if (symbolP == NULL) | |
718 | { | |
719 | /* That is, if this is the first time we've seen the | |
720 | function... */ | |
721 | symbol_table_insert (def_symbol_in_progress); | |
722 | } /* definition follows debug */ | |
723 | } /* Create the line number entry pointing to the function being defined */ | |
724 | ||
725 | def_symbol_in_progress = NULL; | |
726 | demand_empty_rest_of_line (); | |
727 | } | |
728 | ||
729 | static void | |
730 | obj_coff_dim (ignore) | |
731 | int ignore; | |
732 | { | |
733 | int dim_index; | |
734 | ||
735 | if (def_symbol_in_progress == NULL) | |
736 | { | |
737 | as_warn (_(".dim pseudo-op used outside of .def/.endef: ignored.")); | |
738 | demand_empty_rest_of_line (); | |
739 | return; | |
740 | } /* if not inside .def/.endef */ | |
741 | ||
742 | S_SET_NUMBER_AUXILIARY (def_symbol_in_progress, 1); | |
743 | ||
744 | for (dim_index = 0; dim_index < DIMNUM; dim_index++) | |
745 | { | |
746 | SKIP_WHITESPACES (); | |
747 | SA_SET_SYM_DIMEN (def_symbol_in_progress, dim_index, | |
748 | get_absolute_expression ()); | |
749 | ||
750 | switch (*input_line_pointer) | |
751 | { | |
752 | case ',': | |
753 | input_line_pointer++; | |
754 | break; | |
755 | ||
756 | default: | |
757 | as_warn (_("badly formed .dim directive ignored")); | |
758 | /* intentional fallthrough */ | |
759 | case '\n': | |
760 | case ';': | |
761 | dim_index = DIMNUM; | |
762 | break; | |
763 | } | |
764 | } | |
765 | ||
766 | demand_empty_rest_of_line (); | |
767 | } | |
768 | ||
769 | static void | |
770 | obj_coff_line (ignore) | |
771 | int ignore; | |
772 | { | |
773 | int this_base; | |
774 | ||
775 | if (def_symbol_in_progress == NULL) | |
776 | { | |
777 | /* Probably stabs-style line? */ | |
778 | obj_coff_ln (0); | |
779 | return; | |
780 | } | |
781 | ||
782 | this_base = get_absolute_expression (); | |
783 | if (!strcmp (".bf", S_GET_NAME (def_symbol_in_progress))) | |
784 | coff_line_base = this_base; | |
785 | ||
786 | S_SET_NUMBER_AUXILIARY (def_symbol_in_progress, 1); | |
787 | SA_SET_SYM_LNNO (def_symbol_in_progress, coff_line_base); | |
788 | ||
789 | demand_empty_rest_of_line (); | |
790 | ||
791 | #ifndef NO_LISTING | |
792 | if (strcmp (".bf", S_GET_NAME (def_symbol_in_progress)) == 0) | |
793 | { | |
794 | extern int listing; | |
795 | ||
796 | if (listing) | |
797 | listing_source_line ((unsigned int) coff_line_base); | |
798 | } | |
799 | #endif | |
800 | } | |
801 | ||
802 | static void | |
803 | obj_coff_size (ignore) | |
804 | int ignore; | |
805 | { | |
806 | if (def_symbol_in_progress == NULL) | |
807 | { | |
808 | as_warn (_(".size pseudo-op used outside of .def/.endef ignored.")); | |
809 | demand_empty_rest_of_line (); | |
810 | return; | |
811 | } /* if not inside .def/.endef */ | |
812 | ||
813 | S_SET_NUMBER_AUXILIARY (def_symbol_in_progress, 1); | |
814 | SA_SET_SYM_SIZE (def_symbol_in_progress, get_absolute_expression ()); | |
815 | demand_empty_rest_of_line (); | |
816 | } | |
817 | ||
818 | static void | |
819 | obj_coff_scl (ignore) | |
820 | int ignore; | |
821 | { | |
822 | if (def_symbol_in_progress == NULL) | |
823 | { | |
824 | as_warn (_(".scl pseudo-op used outside of .def/.endef ignored.")); | |
825 | demand_empty_rest_of_line (); | |
826 | return; | |
827 | } /* if not inside .def/.endef */ | |
828 | ||
829 | S_SET_STORAGE_CLASS (def_symbol_in_progress, get_absolute_expression ()); | |
830 | demand_empty_rest_of_line (); | |
831 | } | |
832 | ||
833 | static void | |
834 | obj_coff_tag (ignore) | |
835 | int ignore; | |
836 | { | |
837 | char *symbol_name; | |
838 | char name_end; | |
839 | ||
840 | if (def_symbol_in_progress == NULL) | |
841 | { | |
842 | as_warn (_(".tag pseudo-op used outside of .def/.endef ignored.")); | |
843 | demand_empty_rest_of_line (); | |
844 | return; | |
845 | } | |
846 | ||
847 | S_SET_NUMBER_AUXILIARY (def_symbol_in_progress, 1); | |
848 | symbol_name = input_line_pointer; | |
849 | name_end = get_symbol_end (); | |
850 | ||
851 | #ifdef tc_canonicalize_symbol_name | |
852 | symbol_name = tc_canonicalize_symbol_name (symbol_name); | |
853 | #endif | |
854 | ||
855 | /* Assume that the symbol referred to by .tag is always defined. | |
856 | This was a bad assumption. I've added find_or_make. xoxorich. */ | |
857 | SA_SET_SYM_TAGNDX (def_symbol_in_progress, | |
858 | tag_find_or_make (symbol_name)); | |
859 | if (SA_GET_SYM_TAGNDX (def_symbol_in_progress) == 0L) | |
860 | { | |
861 | as_warn (_("tag not found for .tag %s"), symbol_name); | |
862 | } /* not defined */ | |
863 | ||
864 | SF_SET_TAGGED (def_symbol_in_progress); | |
865 | *input_line_pointer = name_end; | |
866 | ||
867 | demand_empty_rest_of_line (); | |
868 | } | |
869 | ||
870 | static void | |
871 | obj_coff_type (ignore) | |
872 | int ignore; | |
873 | { | |
874 | if (def_symbol_in_progress == NULL) | |
875 | { | |
876 | as_warn (_(".type pseudo-op used outside of .def/.endef ignored.")); | |
877 | demand_empty_rest_of_line (); | |
878 | return; | |
879 | } /* if not inside .def/.endef */ | |
880 | ||
881 | S_SET_DATA_TYPE (def_symbol_in_progress, get_absolute_expression ()); | |
882 | ||
883 | if (ISFCN (S_GET_DATA_TYPE (def_symbol_in_progress)) && | |
884 | S_GET_STORAGE_CLASS (def_symbol_in_progress) != C_TPDEF) | |
885 | { | |
886 | SF_SET_FUNCTION (def_symbol_in_progress); | |
887 | } /* is a function */ | |
888 | ||
889 | demand_empty_rest_of_line (); | |
890 | } | |
891 | ||
892 | static void | |
893 | obj_coff_val (ignore) | |
894 | int ignore; | |
895 | { | |
896 | if (def_symbol_in_progress == NULL) | |
897 | { | |
898 | as_warn (_(".val pseudo-op used outside of .def/.endef ignored.")); | |
899 | demand_empty_rest_of_line (); | |
900 | return; | |
901 | } /* if not inside .def/.endef */ | |
902 | ||
903 | if (is_name_beginner (*input_line_pointer)) | |
904 | { | |
905 | char *symbol_name = input_line_pointer; | |
906 | char name_end = get_symbol_end (); | |
907 | ||
908 | #ifdef tc_canonicalize_symbol_name | |
909 | symbol_name = tc_canonicalize_symbol_name (symbol_name); | |
910 | #endif | |
911 | if (!strcmp (symbol_name, ".")) | |
912 | { | |
49309057 | 913 | symbol_set_frag (def_symbol_in_progress, frag_now); |
252b5132 RH |
914 | S_SET_VALUE (def_symbol_in_progress, (valueT) frag_now_fix ()); |
915 | /* If the .val is != from the .def (e.g. statics) */ | |
916 | } | |
917 | else if (strcmp (S_GET_NAME (def_symbol_in_progress), symbol_name)) | |
918 | { | |
49309057 ILT |
919 | expressionS exp; |
920 | ||
921 | exp.X_op = O_symbol; | |
922 | exp.X_add_symbol = symbol_find_or_make (symbol_name); | |
923 | exp.X_op_symbol = NULL; | |
924 | exp.X_add_number = 0; | |
925 | symbol_set_value_expression (def_symbol_in_progress, &exp); | |
252b5132 RH |
926 | |
927 | /* If the segment is undefined when the forward reference is | |
928 | resolved, then copy the segment id from the forward | |
929 | symbol. */ | |
930 | SF_SET_GET_SEGMENT (def_symbol_in_progress); | |
931 | } | |
932 | /* Otherwise, it is the name of a non debug symbol and its value will be calculated later. */ | |
933 | *input_line_pointer = name_end; | |
934 | } | |
935 | else | |
936 | { | |
937 | S_SET_VALUE (def_symbol_in_progress, get_absolute_expression ()); | |
938 | } /* if symbol based */ | |
939 | ||
940 | demand_empty_rest_of_line (); | |
941 | } | |
942 | ||
943 | void | |
944 | coff_obj_read_begin_hook () | |
945 | { | |
946 | /* These had better be the same. Usually 18 bytes. */ | |
947 | #ifndef BFD_HEADERS | |
948 | know (sizeof (SYMENT) == sizeof (AUXENT)); | |
949 | know (SYMESZ == AUXESZ); | |
950 | #endif | |
951 | tag_init (); | |
952 | } | |
953 | ||
954 | ||
955 | symbolS *coff_last_function; | |
956 | static symbolS *coff_last_bf; | |
957 | ||
958 | void | |
959 | coff_frob_symbol (symp, punt) | |
960 | symbolS *symp; | |
961 | int *punt; | |
962 | { | |
963 | static symbolS *last_tagP; | |
964 | static stack *block_stack; | |
965 | static symbolS *set_end; | |
966 | symbolS *next_set_end = NULL; | |
967 | ||
968 | if (symp == &abs_symbol) | |
969 | { | |
970 | *punt = 1; | |
971 | return; | |
972 | } | |
973 | ||
974 | if (current_lineno_sym) | |
975 | coff_add_linesym ((symbolS *) 0); | |
976 | ||
977 | if (!block_stack) | |
978 | block_stack = stack_init (512, sizeof (symbolS*)); | |
979 | ||
980 | if (S_IS_WEAK (symp)) | |
981 | { | |
982 | #ifdef TE_PE | |
983 | S_SET_STORAGE_CLASS (symp, C_NT_WEAK); | |
984 | #else | |
985 | S_SET_STORAGE_CLASS (symp, C_WEAKEXT); | |
986 | #endif | |
987 | } | |
988 | ||
989 | if (!S_IS_DEFINED (symp) | |
990 | && !S_IS_WEAK (symp) | |
991 | && S_GET_STORAGE_CLASS (symp) != C_STAT) | |
992 | S_SET_STORAGE_CLASS (symp, C_EXT); | |
993 | ||
994 | if (!SF_GET_DEBUG (symp)) | |
995 | { | |
996 | symbolS *real; | |
997 | if (!SF_GET_LOCAL (symp) | |
998 | && !SF_GET_STATICS (symp) | |
999 | && (real = symbol_find_base (S_GET_NAME (symp), DO_NOT_STRIP)) | |
1000 | && real != symp) | |
1001 | { | |
1002 | c_symbol_merge (symp, real); | |
1003 | *punt = 1; | |
1004 | } | |
1005 | if (!S_IS_DEFINED (symp) && !SF_GET_LOCAL (symp)) | |
1006 | { | |
1007 | assert (S_GET_VALUE (symp) == 0); | |
1008 | S_SET_EXTERNAL (symp); | |
1009 | } | |
1010 | else if (S_GET_STORAGE_CLASS (symp) == C_NULL) | |
1011 | { | |
1012 | if (S_GET_SEGMENT (symp) == text_section | |
1013 | && symp != seg_info (text_section)->sym) | |
1014 | S_SET_STORAGE_CLASS (symp, C_LABEL); | |
1015 | else | |
1016 | S_SET_STORAGE_CLASS (symp, C_STAT); | |
1017 | } | |
1018 | if (SF_GET_PROCESS (symp)) | |
1019 | { | |
1020 | if (S_GET_STORAGE_CLASS (symp) == C_BLOCK) | |
1021 | { | |
1022 | if (!strcmp (S_GET_NAME (symp), ".bb")) | |
1023 | stack_push (block_stack, (char *) &symp); | |
1024 | else | |
1025 | { | |
1026 | symbolS *begin; | |
1027 | begin = *(symbolS **) stack_pop (block_stack); | |
1028 | if (begin == 0) | |
1029 | as_warn (_("mismatched .eb")); | |
1030 | else | |
1031 | next_set_end = begin; | |
1032 | } | |
1033 | } | |
1034 | if (coff_last_function == 0 && SF_GET_FUNCTION (symp)) | |
1035 | { | |
1036 | union internal_auxent *auxp; | |
1037 | coff_last_function = symp; | |
1038 | if (S_GET_NUMBER_AUXILIARY (symp) < 1) | |
1039 | S_SET_NUMBER_AUXILIARY (symp, 1); | |
49309057 ILT |
1040 | auxp = |
1041 | &coffsymbol (symbol_get_bfdsym (symp))->native[1].u.auxent; | |
252b5132 RH |
1042 | memset (auxp->x_sym.x_fcnary.x_ary.x_dimen, 0, |
1043 | sizeof (auxp->x_sym.x_fcnary.x_ary.x_dimen)); | |
1044 | } | |
1045 | if (S_GET_STORAGE_CLASS (symp) == C_EFCN) | |
1046 | { | |
1047 | if (coff_last_function == 0) | |
1048 | as_fatal (_("C_EFCN symbol out of scope")); | |
1049 | SA_SET_SYM_FSIZE (coff_last_function, | |
1050 | (long) (S_GET_VALUE (symp) | |
1051 | - S_GET_VALUE (coff_last_function))); | |
1052 | next_set_end = coff_last_function; | |
1053 | coff_last_function = 0; | |
1054 | } | |
1055 | } | |
1056 | if (S_IS_EXTERNAL (symp)) | |
1057 | S_SET_STORAGE_CLASS (symp, C_EXT); | |
1058 | else if (SF_GET_LOCAL (symp)) | |
1059 | *punt = 1; | |
1060 | ||
1061 | if (SF_GET_FUNCTION (symp)) | |
49309057 | 1062 | symbol_get_bfdsym (symp)->flags |= BSF_FUNCTION; |
252b5132 RH |
1063 | |
1064 | /* more ... */ | |
1065 | } | |
1066 | ||
1067 | if (SF_GET_TAG (symp)) | |
1068 | last_tagP = symp; | |
1069 | else if (S_GET_STORAGE_CLASS (symp) == C_EOS) | |
1070 | next_set_end = last_tagP; | |
1071 | ||
1072 | #ifdef OBJ_XCOFF | |
1073 | /* This is pretty horrible, but we have to set *punt correctly in | |
1074 | order to call SA_SET_SYM_ENDNDX correctly. */ | |
809ffe0d | 1075 | if (! symbol_used_in_reloc_p (symp) |
49309057 | 1076 | && ((symbol_get_bfdsym (symp)->flags & BSF_SECTION_SYM) != 0 |
252b5132 | 1077 | || (! S_IS_EXTERNAL (symp) |
809ffe0d | 1078 | && ! symbol_get_tc (symp)->output |
252b5132 RH |
1079 | && S_GET_STORAGE_CLASS (symp) != C_FILE))) |
1080 | *punt = 1; | |
1081 | #endif | |
1082 | ||
1083 | if (set_end != (symbolS *) NULL | |
1084 | && ! *punt | |
49309057 | 1085 | && ((symbol_get_bfdsym (symp)->flags & BSF_NOT_AT_END) != 0 |
252b5132 RH |
1086 | || (S_IS_DEFINED (symp) |
1087 | && ! S_IS_COMMON (symp) | |
1088 | && (! S_IS_EXTERNAL (symp) || SF_GET_FUNCTION (symp))))) | |
1089 | { | |
1090 | SA_SET_SYM_ENDNDX (set_end, symp); | |
1091 | set_end = NULL; | |
1092 | } | |
1093 | ||
1094 | if (next_set_end != NULL | |
1095 | && ! *punt) | |
1096 | set_end = next_set_end; | |
1097 | ||
1098 | if (! *punt | |
1099 | && S_GET_STORAGE_CLASS (symp) == C_FCN | |
1100 | && strcmp (S_GET_NAME (symp), ".bf") == 0) | |
1101 | { | |
1102 | if (coff_last_bf != NULL) | |
1103 | SA_SET_SYM_ENDNDX (coff_last_bf, symp); | |
1104 | coff_last_bf = symp; | |
1105 | } | |
1106 | ||
49309057 | 1107 | if (coffsymbol (symbol_get_bfdsym (symp))->lineno) |
252b5132 RH |
1108 | { |
1109 | int i; | |
1110 | struct line_no *lptr; | |
1111 | alent *l; | |
1112 | ||
49309057 | 1113 | lptr = (struct line_no *) coffsymbol (symbol_get_bfdsym (symp))->lineno; |
252b5132 RH |
1114 | for (i = 0; lptr; lptr = lptr->next) |
1115 | i++; | |
49309057 | 1116 | lptr = (struct line_no *) coffsymbol (symbol_get_bfdsym (symp))->lineno; |
252b5132 RH |
1117 | |
1118 | /* We need i entries for line numbers, plus 1 for the first | |
1119 | entry which BFD will override, plus 1 for the last zero | |
1120 | entry (a marker for BFD). */ | |
1121 | l = (alent *) xmalloc ((i + 2) * sizeof (alent)); | |
49309057 | 1122 | coffsymbol (symbol_get_bfdsym (symp))->lineno = l; |
252b5132 RH |
1123 | l[i + 1].line_number = 0; |
1124 | l[i + 1].u.sym = NULL; | |
1125 | for (; i > 0; i--) | |
1126 | { | |
1127 | if (lptr->frag) | |
1128 | lptr->l.u.offset += lptr->frag->fr_address; | |
1129 | l[i] = lptr->l; | |
1130 | lptr = lptr->next; | |
1131 | } | |
1132 | } | |
1133 | } | |
1134 | ||
1135 | void | |
1136 | coff_adjust_section_syms (abfd, sec, x) | |
1137 | bfd *abfd; | |
1138 | asection *sec; | |
1139 | PTR x; | |
1140 | { | |
1141 | symbolS *secsym; | |
1142 | segment_info_type *seginfo = seg_info (sec); | |
1143 | int nlnno, nrelocs = 0; | |
1144 | ||
1145 | /* RS/6000 gas creates a .debug section manually in ppc_frob_file in | |
1146 | tc-ppc.c. Do not get confused by it. */ | |
1147 | if (seginfo == NULL) | |
1148 | return; | |
1149 | ||
1150 | if (!strcmp (sec->name, ".text")) | |
1151 | nlnno = coff_n_line_nos; | |
1152 | else | |
1153 | nlnno = 0; | |
1154 | { | |
1155 | /* @@ Hope that none of the fixups expand to more than one reloc | |
1156 | entry... */ | |
1157 | fixS *fixp = seginfo->fix_root; | |
1158 | while (fixp) | |
1159 | { | |
1160 | if (! fixp->fx_done) | |
1161 | nrelocs++; | |
1162 | fixp = fixp->fx_next; | |
1163 | } | |
1164 | } | |
1165 | if (bfd_get_section_size_before_reloc (sec) == 0 | |
1166 | && nrelocs == 0 | |
1167 | && nlnno == 0 | |
1168 | && sec != text_section | |
1169 | && sec != data_section | |
1170 | && sec != bss_section) | |
1171 | return; | |
1172 | secsym = section_symbol (sec); | |
1173 | SA_SET_SCN_NRELOC (secsym, nrelocs); | |
1174 | SA_SET_SCN_NLINNO (secsym, nlnno); | |
1175 | } | |
1176 | ||
1177 | void | |
1178 | coff_frob_file_after_relocs () | |
1179 | { | |
1180 | bfd_map_over_sections (stdoutput, coff_adjust_section_syms, (char*) 0); | |
1181 | } | |
1182 | ||
1183 | /* | |
1184 | * implement the .section pseudo op: | |
1185 | * .section name {, "flags"} | |
1186 | * ^ ^ | |
1187 | * | +--- optional flags: 'b' for bss | |
1188 | * | 'i' for info | |
1189 | * +-- section name 'l' for lib | |
1190 | * 'n' for noload | |
1191 | * 'o' for over | |
1192 | * 'w' for data | |
1193 | * 'd' (apparently m88k for data) | |
1194 | * 'x' for text | |
1195 | * 'r' for read-only data | |
1196 | * But if the argument is not a quoted string, treat it as a | |
1197 | * subsegment number. | |
1198 | */ | |
1199 | ||
1200 | void | |
1201 | obj_coff_section (ignore) | |
1202 | int ignore; | |
1203 | { | |
1204 | /* Strip out the section name */ | |
1205 | char *section_name; | |
1206 | char c; | |
1207 | char *name; | |
1208 | unsigned int exp; | |
1209 | flagword flags; | |
1210 | asection *sec; | |
1211 | ||
1212 | if (flag_mri) | |
1213 | { | |
1214 | char type; | |
1215 | ||
1216 | s_mri_sect (&type); | |
1217 | return; | |
1218 | } | |
1219 | ||
1220 | section_name = input_line_pointer; | |
1221 | c = get_symbol_end (); | |
1222 | ||
1223 | name = xmalloc (input_line_pointer - section_name + 1); | |
1224 | strcpy (name, section_name); | |
1225 | ||
1226 | *input_line_pointer = c; | |
1227 | ||
1228 | SKIP_WHITESPACE (); | |
1229 | ||
1230 | exp = 0; | |
1231 | flags = SEC_NO_FLAGS; | |
1232 | ||
1233 | if (*input_line_pointer == ',') | |
1234 | { | |
1235 | ++input_line_pointer; | |
1236 | SKIP_WHITESPACE (); | |
1237 | if (*input_line_pointer != '"') | |
1238 | exp = get_absolute_expression (); | |
1239 | else | |
1240 | { | |
1241 | ++input_line_pointer; | |
1242 | while (*input_line_pointer != '"' | |
1243 | && ! is_end_of_line[(unsigned char) *input_line_pointer]) | |
1244 | { | |
1245 | switch (*input_line_pointer) | |
1246 | { | |
1247 | case 'b': flags |= SEC_ALLOC; flags &=~ SEC_LOAD; break; | |
1248 | case 'n': flags &=~ SEC_LOAD; break; | |
1249 | case 'd': | |
827c0149 | 1250 | case 'w': flags |= SEC_DATA; flags &=~ SEC_READONLY; break; |
252b5132 RH |
1251 | case 'x': flags |= SEC_CODE; break; |
1252 | case 'r': flags |= SEC_READONLY; break; | |
1253 | ||
1254 | case 'i': /* STYP_INFO */ | |
1255 | case 'l': /* STYP_LIB */ | |
1256 | case 'o': /* STYP_OVER */ | |
1257 | as_warn (_("unsupported section attribute '%c'"), | |
1258 | *input_line_pointer); | |
1259 | break; | |
1260 | ||
1261 | default: | |
1262 | as_warn(_("unknown section attribute '%c'"), | |
1263 | *input_line_pointer); | |
1264 | break; | |
1265 | } | |
1266 | ++input_line_pointer; | |
1267 | } | |
1268 | if (*input_line_pointer == '"') | |
1269 | ++input_line_pointer; | |
1270 | } | |
1271 | } | |
1272 | ||
1273 | sec = subseg_new (name, (subsegT) exp); | |
1274 | ||
1275 | if (flags != SEC_NO_FLAGS) | |
1276 | { | |
1277 | flagword oldflags; | |
1278 | ||
1279 | oldflags = bfd_get_section_flags (stdoutput, sec); | |
1280 | oldflags &= SEC_LINK_ONCE | SEC_LINK_DUPLICATES; | |
1281 | flags |= oldflags; | |
1282 | ||
1283 | if (! bfd_set_section_flags (stdoutput, sec, flags)) | |
1284 | as_warn (_("error setting flags for \"%s\": %s"), | |
1285 | bfd_section_name (stdoutput, sec), | |
1286 | bfd_errmsg (bfd_get_error ())); | |
1287 | } | |
1288 | ||
1289 | demand_empty_rest_of_line (); | |
1290 | } | |
1291 | ||
1292 | void | |
1293 | coff_adjust_symtab () | |
1294 | { | |
1295 | if (symbol_rootP == NULL | |
1296 | || S_GET_STORAGE_CLASS (symbol_rootP) != C_FILE) | |
1297 | c_dot_file_symbol ("fake"); | |
1298 | } | |
1299 | ||
1300 | void | |
1301 | coff_frob_section (sec) | |
1302 | segT sec; | |
1303 | { | |
1304 | segT strsec; | |
1305 | char *p; | |
1306 | fragS *fragp; | |
1307 | bfd_vma size, n_entries, mask; | |
1308 | ||
1309 | /* The COFF back end in BFD requires that all section sizes be | |
1310 | rounded up to multiples of the corresponding section alignments. | |
1311 | Seems kinda silly to me, but that's the way it is. */ | |
1312 | size = bfd_get_section_size_before_reloc (sec); | |
1313 | mask = ((bfd_vma) 1 << (bfd_vma) sec->alignment_power) - 1; | |
1314 | if (size & mask) | |
1315 | { | |
1316 | size = (size + mask) & ~mask; | |
1317 | bfd_set_section_size (stdoutput, sec, size); | |
1318 | } | |
1319 | ||
1320 | /* If the section size is non-zero, the section symbol needs an aux | |
1321 | entry associated with it, indicating the size. We don't know | |
1322 | all the values yet; coff_frob_symbol will fill them in later. */ | |
1323 | if (size != 0 | |
1324 | || sec == text_section | |
1325 | || sec == data_section | |
1326 | || sec == bss_section) | |
1327 | { | |
1328 | symbolS *secsym = section_symbol (sec); | |
1329 | ||
1330 | S_SET_STORAGE_CLASS (secsym, C_STAT); | |
1331 | S_SET_NUMBER_AUXILIARY (secsym, 1); | |
1332 | SF_SET_STATICS (secsym); | |
1333 | SA_SET_SCN_SCNLEN (secsym, size); | |
1334 | } | |
1335 | ||
1336 | /* @@ these should be in a "stabs.h" file, or maybe as.h */ | |
1337 | #ifndef STAB_SECTION_NAME | |
1338 | #define STAB_SECTION_NAME ".stab" | |
1339 | #endif | |
1340 | #ifndef STAB_STRING_SECTION_NAME | |
1341 | #define STAB_STRING_SECTION_NAME ".stabstr" | |
1342 | #endif | |
1343 | if (strcmp (STAB_STRING_SECTION_NAME, sec->name)) | |
1344 | return; | |
1345 | ||
1346 | strsec = sec; | |
1347 | sec = subseg_get (STAB_SECTION_NAME, 0); | |
1348 | /* size is already rounded up, since other section will be listed first */ | |
1349 | size = bfd_get_section_size_before_reloc (strsec); | |
1350 | ||
1351 | n_entries = bfd_get_section_size_before_reloc (sec) / 12 - 1; | |
1352 | ||
1353 | /* Find first non-empty frag. It should be large enough. */ | |
1354 | fragp = seg_info (sec)->frchainP->frch_root; | |
1355 | while (fragp && fragp->fr_fix == 0) | |
1356 | fragp = fragp->fr_next; | |
1357 | assert (fragp != 0 && fragp->fr_fix >= 12); | |
1358 | ||
1359 | /* Store the values. */ | |
1360 | p = fragp->fr_literal; | |
1361 | bfd_h_put_16 (stdoutput, n_entries, (bfd_byte *) p + 6); | |
1362 | bfd_h_put_32 (stdoutput, size, (bfd_byte *) p + 8); | |
1363 | } | |
1364 | ||
1365 | void | |
1366 | obj_coff_init_stab_section (seg) | |
1367 | segT seg; | |
1368 | { | |
1369 | char *file; | |
1370 | char *p; | |
1371 | char *stabstr_name; | |
1372 | unsigned int stroff; | |
1373 | ||
1374 | /* Make space for this first symbol. */ | |
1375 | p = frag_more (12); | |
1376 | /* Zero it out. */ | |
1377 | memset (p, 0, 12); | |
1378 | as_where (&file, (unsigned int *) NULL); | |
1379 | stabstr_name = (char *) alloca (strlen (seg->name) + 4); | |
1380 | strcpy (stabstr_name, seg->name); | |
1381 | strcat (stabstr_name, "str"); | |
1382 | stroff = get_stab_string_offset (file, stabstr_name); | |
1383 | know (stroff == 1); | |
1384 | md_number_to_chars (p, stroff, 4); | |
1385 | } | |
1386 | ||
1387 | #ifdef DEBUG | |
1388 | /* for debugging */ | |
1389 | const char * | |
1390 | s_get_name (s) | |
1391 | symbolS *s; | |
1392 | { | |
1393 | return ((s == NULL) ? "(NULL)" : S_GET_NAME (s)); | |
1394 | } | |
1395 | ||
1396 | void | |
1397 | symbol_dump () | |
1398 | { | |
1399 | symbolS *symbolP; | |
1400 | ||
1401 | for (symbolP = symbol_rootP; symbolP; symbolP = symbol_next (symbolP)) | |
1402 | { | |
1403 | printf(_("0x%lx: \"%s\" type = %ld, class = %d, segment = %d\n"), | |
1404 | (unsigned long) symbolP, | |
1405 | S_GET_NAME(symbolP), | |
1406 | (long) S_GET_DATA_TYPE(symbolP), | |
1407 | S_GET_STORAGE_CLASS(symbolP), | |
1408 | (int) S_GET_SEGMENT(symbolP)); | |
1409 | } | |
1410 | } | |
1411 | ||
1412 | #endif /* DEBUG */ | |
1413 | ||
1414 | #else /* not BFD_ASSEMBLER */ | |
1415 | ||
1416 | #include "frags.h" | |
1417 | /* This is needed because we include internal bfd things. */ | |
1418 | #include <time.h> | |
1419 | ||
1420 | #include "libbfd.h" | |
1421 | #include "libcoff.h" | |
1422 | ||
1423 | #ifdef TE_PE | |
1424 | #include "coff/pe.h" | |
1425 | #endif | |
1426 | ||
1427 | /* The NOP_OPCODE is for the alignment fill value. Fill with nop so | |
1428 | that we can stick sections together without causing trouble. */ | |
1429 | #ifndef NOP_OPCODE | |
1430 | #define NOP_OPCODE 0x00 | |
1431 | #endif | |
1432 | ||
1433 | /* The zeroes if symbol name is longer than 8 chars */ | |
1434 | #define S_SET_ZEROES(s,v) ((s)->sy_symbol.ost_entry.n_zeroes = (v)) | |
1435 | ||
1436 | #define MIN(a,b) ((a) < (b)? (a) : (b)) | |
1437 | /* This vector is used to turn an internal segment into a section # | |
1438 | suitable for insertion into a coff symbol table | |
1439 | */ | |
1440 | ||
1441 | const short seg_N_TYPE[] = | |
1442 | { /* in: segT out: N_TYPE bits */ | |
1443 | C_ABS_SECTION, | |
1444 | 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, | |
1445 | 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, | |
1446 | 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, | |
1447 | 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, | |
1448 | C_UNDEF_SECTION, /* SEG_UNKNOWN */ | |
1449 | C_UNDEF_SECTION, /* SEG_GOOF */ | |
1450 | C_UNDEF_SECTION, /* SEG_EXPR */ | |
1451 | C_DEBUG_SECTION, /* SEG_DEBUG */ | |
1452 | C_NTV_SECTION, /* SEG_NTV */ | |
1453 | C_PTV_SECTION, /* SEG_PTV */ | |
1454 | C_REGISTER_SECTION, /* SEG_REGISTER */ | |
1455 | }; | |
1456 | ||
1457 | int function_lineoff = -1; /* Offset in line#s where the last function | |
1458 | started (the odd entry for line #0) */ | |
1459 | ||
1460 | /* structure used to keep the filenames which | |
1461 | are too long around so that we can stick them | |
1462 | into the string table */ | |
1463 | struct filename_list | |
1464 | { | |
1465 | char *filename; | |
1466 | struct filename_list *next; | |
1467 | }; | |
1468 | ||
1469 | static struct filename_list *filename_list_head; | |
1470 | static struct filename_list *filename_list_tail; | |
1471 | ||
1472 | static symbolS *last_line_symbol; | |
1473 | ||
1474 | /* Add 4 to the real value to get the index and compensate the | |
1475 | negatives. This vector is used by S_GET_SEGMENT to turn a coff | |
1476 | section number into a segment number | |
1477 | */ | |
1478 | static symbolS *previous_file_symbol; | |
1479 | void c_symbol_merge (); | |
1480 | static int line_base; | |
1481 | ||
1482 | symbolS *c_section_symbol (); | |
1483 | bfd *abfd; | |
1484 | ||
1485 | static void fixup_segment PARAMS ((segment_info_type *segP, | |
1486 | segT this_segment_type)); | |
1487 | ||
1488 | ||
1489 | static void fixup_mdeps PARAMS ((fragS *, | |
1490 | object_headers *, | |
1491 | segT)); | |
1492 | ||
1493 | ||
1494 | static void fill_section PARAMS ((bfd * abfd, | |
1495 | object_headers *, | |
1496 | unsigned long *)); | |
1497 | ||
1498 | ||
1499 | static int c_line_new PARAMS ((symbolS * symbol, long paddr, | |
1500 | int line_number, | |
1501 | fragS * frag)); | |
1502 | ||
1503 | ||
1504 | static void w_symbols PARAMS ((bfd * abfd, char *where, | |
1505 | symbolS * symbol_rootP)); | |
1506 | ||
1507 | static void adjust_stab_section PARAMS ((bfd *abfd, segT seg)); | |
1508 | ||
1509 | static void obj_coff_lcomm PARAMS ((int)); | |
1510 | static void obj_coff_text PARAMS ((int)); | |
1511 | static void obj_coff_data PARAMS ((int)); | |
1512 | static void obj_coff_ident PARAMS ((int)); | |
1513 | void obj_coff_section PARAMS ((int)); | |
1514 | ||
1515 | /* Section stuff | |
1516 | ||
1517 | We allow more than just the standard 3 sections, infact, we allow | |
1518 | 40 sections, (though the usual three have to be there). | |
1519 | ||
1520 | This structure performs the mappings for us: | |
1521 | */ | |
1522 | ||
1523 | ||
1524 | typedef struct | |
1525 | { | |
1526 | segT seg_t; | |
1527 | int i; | |
1528 | } seg_info_type; | |
1529 | ||
1530 | static const seg_info_type seg_info_off_by_4[] = | |
1531 | { | |
1532 | {SEG_PTV, }, | |
1533 | {SEG_NTV, }, | |
1534 | {SEG_DEBUG, }, | |
1535 | {SEG_ABSOLUTE, }, | |
1536 | {SEG_UNKNOWN, }, | |
1537 | {SEG_E0}, {SEG_E1}, {SEG_E2}, {SEG_E3}, {SEG_E4}, | |
1538 | {SEG_E5}, {SEG_E6}, {SEG_E7}, {SEG_E8}, {SEG_E9}, | |
1539 | {SEG_E10},{SEG_E11},{SEG_E12},{SEG_E13},{SEG_E14}, | |
1540 | {SEG_E15},{SEG_E16},{SEG_E17},{SEG_E18},{SEG_E19}, | |
1541 | {SEG_E20},{SEG_E21},{SEG_E22},{SEG_E23},{SEG_E24}, | |
1542 | {SEG_E25},{SEG_E26},{SEG_E27},{SEG_E28},{SEG_E29}, | |
1543 | {SEG_E30},{SEG_E31},{SEG_E32},{SEG_E33},{SEG_E34}, | |
1544 | {SEG_E35},{SEG_E36},{SEG_E37},{SEG_E38},{SEG_E39}, | |
1545 | {(segT)40}, | |
1546 | {(segT)41}, | |
1547 | {(segT)42}, | |
1548 | {(segT)43}, | |
1549 | {(segT)44}, | |
1550 | {(segT)45}, | |
1551 | {(segT)0}, | |
1552 | {(segT)0}, | |
1553 | {(segT)0}, | |
1554 | {SEG_REGISTER} | |
1555 | }; | |
1556 | ||
1557 | ||
1558 | ||
1559 | #define SEG_INFO_FROM_SECTION_NUMBER(x) (seg_info_off_by_4[(x)+4]) | |
1560 | ||
1561 | static relax_addressT | |
1562 | relax_align (address, alignment) | |
1563 | relax_addressT address; | |
1564 | long alignment; | |
1565 | { | |
1566 | relax_addressT mask; | |
1567 | relax_addressT new_address; | |
1568 | ||
1569 | mask = ~((~0) << alignment); | |
1570 | new_address = (address + mask) & (~mask); | |
1571 | return (new_address - address); | |
1572 | } | |
1573 | ||
1574 | ||
1575 | segT | |
1576 | s_get_segment (x) | |
1577 | symbolS * x; | |
1578 | { | |
1579 | return SEG_INFO_FROM_SECTION_NUMBER (x->sy_symbol.ost_entry.n_scnum).seg_t; | |
1580 | } | |
1581 | ||
1582 | /* calculate the size of the frag chain and fill in the section header | |
1583 | to contain all of it, also fill in the addr of the sections */ | |
1584 | static unsigned int | |
1585 | size_section (abfd, idx) | |
1586 | bfd * abfd; | |
1587 | unsigned int idx; | |
1588 | { | |
1589 | ||
1590 | unsigned int size = 0; | |
1591 | fragS *frag = segment_info[idx].frchainP->frch_root; | |
1592 | while (frag) | |
1593 | { | |
1594 | size = frag->fr_address; | |
1595 | if (frag->fr_address != size) | |
1596 | { | |
1597 | fprintf (stderr, _("Out of step\n")); | |
1598 | size = frag->fr_address; | |
1599 | } | |
1600 | ||
1601 | switch (frag->fr_type) | |
1602 | { | |
1603 | #ifdef TC_COFF_SIZEMACHDEP | |
1604 | case rs_machine_dependent: | |
1605 | size += TC_COFF_SIZEMACHDEP (frag); | |
1606 | break; | |
1607 | #endif | |
1608 | case rs_space: | |
1609 | assert (frag->fr_symbol == 0); | |
1610 | case rs_fill: | |
1611 | case rs_org: | |
1612 | size += frag->fr_fix; | |
1613 | size += frag->fr_offset * frag->fr_var; | |
1614 | break; | |
1615 | case rs_align: | |
1616 | case rs_align_code: | |
1617 | { | |
1618 | addressT off; | |
1619 | ||
1620 | size += frag->fr_fix; | |
1621 | off = relax_align (size, frag->fr_offset); | |
1622 | if (frag->fr_subtype != 0 && off > frag->fr_subtype) | |
1623 | off = 0; | |
1624 | size += off; | |
1625 | } | |
1626 | break; | |
1627 | default: | |
1628 | BAD_CASE (frag->fr_type); | |
1629 | break; | |
1630 | } | |
1631 | frag = frag->fr_next; | |
1632 | } | |
1633 | segment_info[idx].scnhdr.s_size = size; | |
1634 | return size; | |
1635 | } | |
1636 | ||
1637 | ||
1638 | static unsigned int | |
1639 | count_entries_in_chain (idx) | |
1640 | unsigned int idx; | |
1641 | { | |
1642 | unsigned int nrelocs; | |
1643 | fixS *fixup_ptr; | |
1644 | ||
1645 | /* Count the relocations */ | |
1646 | fixup_ptr = segment_info[idx].fix_root; | |
1647 | nrelocs = 0; | |
1648 | while (fixup_ptr != (fixS *) NULL) | |
1649 | { | |
1650 | if (fixup_ptr->fx_done == 0 && TC_COUNT_RELOC (fixup_ptr)) | |
1651 | { | |
1652 | #ifdef TC_A29K | |
1653 | if (fixup_ptr->fx_r_type == RELOC_CONSTH) | |
1654 | nrelocs += 2; | |
1655 | else | |
1656 | nrelocs++; | |
1657 | #else | |
1658 | nrelocs++; | |
1659 | #endif | |
1660 | } | |
1661 | ||
1662 | fixup_ptr = fixup_ptr->fx_next; | |
1663 | } | |
1664 | return nrelocs; | |
1665 | } | |
1666 | ||
1667 | #ifdef TE_AUX | |
1668 | ||
1669 | static int compare_external_relocs PARAMS ((const PTR, const PTR)); | |
1670 | ||
1671 | /* AUX's ld expects relocations to be sorted */ | |
1672 | static int | |
1673 | compare_external_relocs (x, y) | |
1674 | const PTR x; | |
1675 | const PTR y; | |
1676 | { | |
1677 | struct external_reloc *a = (struct external_reloc *) x; | |
1678 | struct external_reloc *b = (struct external_reloc *) y; | |
1679 | bfd_vma aadr = bfd_getb32 (a->r_vaddr); | |
1680 | bfd_vma badr = bfd_getb32 (b->r_vaddr); | |
1681 | return (aadr < badr ? -1 : badr < aadr ? 1 : 0); | |
1682 | } | |
1683 | ||
1684 | #endif | |
1685 | ||
1686 | /* output all the relocations for a section */ | |
1687 | void | |
1688 | do_relocs_for (abfd, h, file_cursor) | |
1689 | bfd * abfd; | |
1690 | object_headers * h; | |
1691 | unsigned long *file_cursor; | |
1692 | { | |
1693 | unsigned int nrelocs; | |
1694 | unsigned int idx; | |
1695 | unsigned long reloc_start = *file_cursor; | |
1696 | ||
1697 | for (idx = SEG_E0; idx < SEG_LAST; idx++) | |
1698 | { | |
1699 | if (segment_info[idx].scnhdr.s_name[0]) | |
1700 | { | |
1701 | struct external_reloc *ext_ptr; | |
1702 | struct external_reloc *external_reloc_vec; | |
1703 | unsigned int external_reloc_size; | |
1704 | unsigned int base = segment_info[idx].scnhdr.s_paddr; | |
1705 | fixS *fix_ptr = segment_info[idx].fix_root; | |
1706 | nrelocs = count_entries_in_chain (idx); | |
1707 | ||
1708 | if (nrelocs) | |
1709 | /* Bypass this stuff if no relocs. This also incidentally | |
1710 | avoids a SCO bug, where free(malloc(0)) tends to crash. */ | |
1711 | { | |
1712 | external_reloc_size = nrelocs * RELSZ; | |
1713 | external_reloc_vec = | |
1714 | (struct external_reloc *) malloc (external_reloc_size); | |
1715 | ||
1716 | ext_ptr = external_reloc_vec; | |
1717 | ||
1718 | /* Fill in the internal coff style reloc struct from the | |
1719 | internal fix list. */ | |
1720 | while (fix_ptr) | |
1721 | { | |
1722 | struct internal_reloc intr; | |
1723 | ||
1724 | /* Only output some of the relocations */ | |
1725 | if (fix_ptr->fx_done == 0 && TC_COUNT_RELOC (fix_ptr)) | |
1726 | { | |
1727 | #ifdef TC_RELOC_MANGLE | |
1728 | TC_RELOC_MANGLE (&segment_info[idx], fix_ptr, &intr, | |
1729 | base); | |
1730 | ||
1731 | #else | |
1732 | symbolS *dot; | |
1733 | symbolS *symbol_ptr = fix_ptr->fx_addsy; | |
1734 | ||
1735 | intr.r_type = TC_COFF_FIX2RTYPE (fix_ptr); | |
1736 | intr.r_vaddr = | |
1737 | base + fix_ptr->fx_frag->fr_address + fix_ptr->fx_where; | |
1738 | ||
1739 | #ifdef TC_KEEP_FX_OFFSET | |
1740 | intr.r_offset = fix_ptr->fx_offset; | |
1741 | #else | |
1742 | intr.r_offset = 0; | |
1743 | #endif | |
1744 | ||
1745 | while (symbol_ptr->sy_value.X_op == O_symbol | |
1746 | && (! S_IS_DEFINED (symbol_ptr) | |
1747 | || S_IS_COMMON (symbol_ptr))) | |
1748 | { | |
1749 | symbolS *n; | |
1750 | ||
1751 | /* We must avoid looping, as that can occur | |
1752 | with a badly written program. */ | |
1753 | n = symbol_ptr->sy_value.X_add_symbol; | |
1754 | if (n == symbol_ptr) | |
1755 | break; | |
1756 | symbol_ptr = n; | |
1757 | } | |
1758 | ||
1759 | /* Turn the segment of the symbol into an offset. */ | |
1760 | if (symbol_ptr) | |
1761 | { | |
1762 | resolve_symbol_value (symbol_ptr, 1); | |
1763 | if (! symbol_ptr->sy_resolved) | |
1764 | { | |
1765 | char *file; | |
1766 | unsigned int line; | |
1767 | ||
1768 | if (expr_symbol_where (symbol_ptr, &file, &line)) | |
1769 | as_bad_where (file, line, | |
1770 | _("unresolved relocation")); | |
1771 | else | |
1772 | as_bad (_("bad relocation: symbol `%s' not in symbol table"), | |
1773 | S_GET_NAME (symbol_ptr)); | |
1774 | } | |
1775 | dot = segment_info[S_GET_SEGMENT (symbol_ptr)].dot; | |
1776 | if (dot) | |
1777 | { | |
1778 | intr.r_symndx = dot->sy_number; | |
1779 | } | |
1780 | else | |
1781 | { | |
1782 | intr.r_symndx = symbol_ptr->sy_number; | |
1783 | } | |
1784 | ||
1785 | } | |
1786 | else | |
1787 | { | |
1788 | intr.r_symndx = -1; | |
1789 | } | |
1790 | #endif | |
1791 | ||
1792 | (void) bfd_coff_swap_reloc_out (abfd, &intr, ext_ptr); | |
1793 | ext_ptr++; | |
1794 | ||
1795 | #if defined(TC_A29K) | |
1796 | ||
1797 | /* The 29k has a special kludge for the high 16 bit | |
1798 | reloc. Two relocations are emited, R_IHIHALF, | |
1799 | and R_IHCONST. The second one doesn't contain a | |
1800 | symbol, but uses the value for offset. */ | |
1801 | ||
1802 | if (intr.r_type == R_IHIHALF) | |
1803 | { | |
1804 | /* now emit the second bit */ | |
1805 | intr.r_type = R_IHCONST; | |
1806 | intr.r_symndx = fix_ptr->fx_addnumber; | |
1807 | (void) bfd_coff_swap_reloc_out (abfd, &intr, ext_ptr); | |
1808 | ext_ptr++; | |
1809 | } | |
1810 | #endif | |
1811 | } | |
1812 | ||
1813 | fix_ptr = fix_ptr->fx_next; | |
1814 | } | |
1815 | ||
1816 | #ifdef TE_AUX | |
1817 | /* Sort the reloc table */ | |
1818 | qsort ((PTR) external_reloc_vec, nrelocs, | |
1819 | sizeof (struct external_reloc), compare_external_relocs); | |
1820 | #endif | |
1821 | ||
1822 | /* Write out the reloc table */ | |
1823 | bfd_write ((PTR) external_reloc_vec, 1, external_reloc_size, | |
1824 | abfd); | |
1825 | free (external_reloc_vec); | |
1826 | ||
1827 | /* Fill in section header info. */ | |
1828 | segment_info[idx].scnhdr.s_relptr = *file_cursor; | |
1829 | *file_cursor += external_reloc_size; | |
1830 | segment_info[idx].scnhdr.s_nreloc = nrelocs; | |
1831 | } | |
1832 | else | |
1833 | { | |
1834 | /* No relocs */ | |
1835 | segment_info[idx].scnhdr.s_relptr = 0; | |
1836 | } | |
1837 | } | |
1838 | } | |
1839 | /* Set relocation_size field in file headers */ | |
1840 | H_SET_RELOCATION_SIZE (h, *file_cursor - reloc_start, 0); | |
1841 | } | |
1842 | ||
1843 | ||
1844 | /* run through a frag chain and write out the data to go with it, fill | |
1845 | in the scnhdrs with the info on the file postions | |
1846 | */ | |
1847 | static void | |
1848 | fill_section (abfd, h, file_cursor) | |
1849 | bfd * abfd; | |
1850 | object_headers *h; | |
1851 | unsigned long *file_cursor; | |
1852 | { | |
1853 | ||
1854 | unsigned int i; | |
1855 | unsigned int paddr = 0; | |
1856 | ||
1857 | for (i = SEG_E0; i < SEG_UNKNOWN; i++) | |
1858 | { | |
1859 | unsigned int offset = 0; | |
1860 | struct internal_scnhdr *s = &(segment_info[i].scnhdr); | |
1861 | ||
1862 | PROGRESS (1); | |
1863 | ||
1864 | if (s->s_name[0]) | |
1865 | { | |
1866 | fragS *frag = segment_info[i].frchainP->frch_root; | |
1867 | char *buffer; | |
1868 | ||
1869 | if (s->s_size == 0) | |
1870 | s->s_scnptr = 0; | |
1871 | else | |
1872 | { | |
1873 | buffer = xmalloc (s->s_size); | |
1874 | s->s_scnptr = *file_cursor; | |
1875 | } | |
1876 | know (s->s_paddr == paddr); | |
1877 | ||
1878 | if (strcmp (s->s_name, ".text") == 0) | |
1879 | s->s_flags |= STYP_TEXT; | |
1880 | else if (strcmp (s->s_name, ".data") == 0) | |
1881 | s->s_flags |= STYP_DATA; | |
1882 | else if (strcmp (s->s_name, ".bss") == 0) | |
1883 | { | |
1884 | s->s_scnptr = 0; | |
1885 | s->s_flags |= STYP_BSS; | |
1886 | ||
1887 | /* @@ Should make the i386 and a29k coff targets define | |
1888 | COFF_NOLOAD_PROBLEM, and have only one test here. */ | |
1889 | #ifndef TC_I386 | |
1890 | #ifndef TC_A29K | |
1891 | #ifndef COFF_NOLOAD_PROBLEM | |
1892 | /* Apparently the SVR3 linker (and exec syscall) and UDI | |
1893 | mondfe progrem are confused by noload sections. */ | |
1894 | s->s_flags |= STYP_NOLOAD; | |
1895 | #endif | |
1896 | #endif | |
1897 | #endif | |
1898 | } | |
1899 | else if (strcmp (s->s_name, ".lit") == 0) | |
1900 | s->s_flags = STYP_LIT | STYP_TEXT; | |
1901 | else if (strcmp (s->s_name, ".init") == 0) | |
1902 | s->s_flags |= STYP_TEXT; | |
1903 | else if (strcmp (s->s_name, ".fini") == 0) | |
1904 | s->s_flags |= STYP_TEXT; | |
1905 | else if (strncmp (s->s_name, ".comment", 8) == 0) | |
1906 | s->s_flags |= STYP_INFO; | |
1907 | ||
1908 | while (frag) | |
1909 | { | |
1910 | unsigned int fill_size; | |
1911 | switch (frag->fr_type) | |
1912 | { | |
1913 | case rs_machine_dependent: | |
1914 | if (frag->fr_fix) | |
1915 | { | |
1916 | memcpy (buffer + frag->fr_address, | |
1917 | frag->fr_literal, | |
1918 | (unsigned int) frag->fr_fix); | |
1919 | offset += frag->fr_fix; | |
1920 | } | |
1921 | ||
1922 | break; | |
1923 | case rs_space: | |
1924 | assert (frag->fr_symbol == 0); | |
1925 | case rs_fill: | |
1926 | case rs_align: | |
1927 | case rs_align_code: | |
1928 | case rs_org: | |
1929 | if (frag->fr_fix) | |
1930 | { | |
1931 | memcpy (buffer + frag->fr_address, | |
1932 | frag->fr_literal, | |
1933 | (unsigned int) frag->fr_fix); | |
1934 | offset += frag->fr_fix; | |
1935 | } | |
1936 | ||
1937 | fill_size = frag->fr_var; | |
1938 | if (fill_size && frag->fr_offset > 0) | |
1939 | { | |
1940 | unsigned int count; | |
1941 | unsigned int off = frag->fr_fix; | |
1942 | for (count = frag->fr_offset; count; count--) | |
1943 | { | |
1944 | if (fill_size + frag->fr_address + off <= s->s_size) | |
1945 | { | |
1946 | memcpy (buffer + frag->fr_address + off, | |
1947 | frag->fr_literal + frag->fr_fix, | |
1948 | fill_size); | |
1949 | off += fill_size; | |
1950 | offset += fill_size; | |
1951 | } | |
1952 | } | |
1953 | } | |
1954 | break; | |
1955 | case rs_broken_word: | |
1956 | break; | |
1957 | default: | |
1958 | abort (); | |
1959 | } | |
1960 | frag = frag->fr_next; | |
1961 | } | |
1962 | ||
1963 | if (s->s_size != 0) | |
1964 | { | |
1965 | if (s->s_scnptr != 0) | |
1966 | { | |
1967 | bfd_write (buffer, s->s_size, 1, abfd); | |
1968 | *file_cursor += s->s_size; | |
1969 | } | |
1970 | free (buffer); | |
1971 | } | |
1972 | paddr += s->s_size; | |
1973 | } | |
1974 | } | |
1975 | } | |
1976 | ||
1977 | /* Coff file generation & utilities */ | |
1978 | ||
1979 | static void | |
1980 | coff_header_append (abfd, h) | |
1981 | bfd * abfd; | |
1982 | object_headers * h; | |
1983 | { | |
1984 | unsigned int i; | |
1985 | char buffer[1000]; | |
1986 | char buffero[1000]; | |
1987 | #ifdef COFF_LONG_SECTION_NAMES | |
1988 | unsigned long string_size = 4; | |
1989 | #endif | |
1990 | ||
1991 | bfd_seek (abfd, 0, 0); | |
1992 | ||
1993 | #ifndef OBJ_COFF_OMIT_OPTIONAL_HEADER | |
1994 | H_SET_MAGIC_NUMBER (h, COFF_MAGIC); | |
1995 | H_SET_VERSION_STAMP (h, 0); | |
1996 | H_SET_ENTRY_POINT (h, 0); | |
1997 | H_SET_TEXT_START (h, segment_info[SEG_E0].frchainP->frch_root->fr_address); | |
1998 | H_SET_DATA_START (h, segment_info[SEG_E1].frchainP->frch_root->fr_address); | |
1999 | H_SET_SIZEOF_OPTIONAL_HEADER (h, bfd_coff_swap_aouthdr_out(abfd, &h->aouthdr, | |
2000 | buffero)); | |
2001 | #else /* defined (OBJ_COFF_OMIT_OPTIONAL_HEADER) */ | |
2002 | H_SET_SIZEOF_OPTIONAL_HEADER (h, 0); | |
2003 | #endif /* defined (OBJ_COFF_OMIT_OPTIONAL_HEADER) */ | |
2004 | ||
2005 | i = bfd_coff_swap_filehdr_out (abfd, &h->filehdr, buffer); | |
2006 | ||
2007 | bfd_write (buffer, i, 1, abfd); | |
2008 | bfd_write (buffero, H_GET_SIZEOF_OPTIONAL_HEADER (h), 1, abfd); | |
2009 | ||
2010 | for (i = SEG_E0; i < SEG_LAST; i++) | |
2011 | { | |
2012 | if (segment_info[i].scnhdr.s_name[0]) | |
2013 | { | |
2014 | unsigned int size; | |
2015 | ||
2016 | #ifdef COFF_LONG_SECTION_NAMES | |
2017 | /* Support long section names as found in PE. This code | |
2018 | must coordinate with that in write_object_file and | |
2019 | w_strings. */ | |
2020 | if (strlen (segment_info[i].name) > SCNNMLEN) | |
2021 | { | |
2022 | memset (segment_info[i].scnhdr.s_name, 0, SCNNMLEN); | |
2023 | sprintf (segment_info[i].scnhdr.s_name, "/%lu", string_size); | |
2024 | string_size += strlen (segment_info[i].name) + 1; | |
2025 | } | |
2026 | #endif | |
2027 | ||
2028 | size = bfd_coff_swap_scnhdr_out (abfd, | |
2029 | &(segment_info[i].scnhdr), | |
2030 | buffer); | |
2031 | if (size == 0) | |
2032 | as_bad (_("bfd_coff_swap_scnhdr_out failed")); | |
2033 | bfd_write (buffer, size, 1, abfd); | |
2034 | } | |
2035 | } | |
2036 | } | |
2037 | ||
2038 | ||
2039 | char * | |
2040 | symbol_to_chars (abfd, where, symbolP) | |
2041 | bfd * abfd; | |
2042 | char *where; | |
2043 | symbolS * symbolP; | |
2044 | { | |
2045 | unsigned int numaux = symbolP->sy_symbol.ost_entry.n_numaux; | |
2046 | unsigned int i; | |
2047 | valueT val; | |
2048 | ||
2049 | /* Turn any symbols with register attributes into abs symbols */ | |
2050 | if (S_GET_SEGMENT (symbolP) == reg_section) | |
2051 | { | |
2052 | S_SET_SEGMENT (symbolP, absolute_section); | |
2053 | } | |
2054 | /* At the same time, relocate all symbols to their output value */ | |
2055 | ||
2056 | #ifndef TE_PE | |
2057 | val = (segment_info[S_GET_SEGMENT (symbolP)].scnhdr.s_paddr | |
2058 | + S_GET_VALUE (symbolP)); | |
2059 | #else | |
2060 | val = S_GET_VALUE (symbolP); | |
2061 | #endif | |
2062 | ||
2063 | S_SET_VALUE (symbolP, val); | |
2064 | ||
2065 | symbolP->sy_symbol.ost_entry.n_value = val; | |
2066 | ||
2067 | where += bfd_coff_swap_sym_out (abfd, &symbolP->sy_symbol.ost_entry, | |
2068 | where); | |
2069 | ||
2070 | for (i = 0; i < numaux; i++) | |
2071 | { | |
2072 | where += bfd_coff_swap_aux_out (abfd, | |
2073 | &symbolP->sy_symbol.ost_auxent[i], | |
2074 | S_GET_DATA_TYPE (symbolP), | |
2075 | S_GET_STORAGE_CLASS (symbolP), | |
2076 | i, numaux, where); | |
2077 | } | |
2078 | return where; | |
2079 | ||
2080 | } | |
2081 | ||
2082 | void | |
2083 | coff_obj_symbol_new_hook (symbolP) | |
2084 | symbolS *symbolP; | |
2085 | { | |
2086 | char underscore = 0; /* Symbol has leading _ */ | |
2087 | ||
2088 | /* Effective symbol */ | |
2089 | /* Store the pointer in the offset. */ | |
2090 | S_SET_ZEROES (symbolP, 0L); | |
2091 | S_SET_DATA_TYPE (symbolP, T_NULL); | |
2092 | S_SET_STORAGE_CLASS (symbolP, 0); | |
2093 | S_SET_NUMBER_AUXILIARY (symbolP, 0); | |
2094 | /* Additional information */ | |
2095 | symbolP->sy_symbol.ost_flags = 0; | |
2096 | /* Auxiliary entries */ | |
2097 | memset ((char *) &symbolP->sy_symbol.ost_auxent[0], 0, AUXESZ); | |
2098 | ||
2099 | if (S_IS_STRING (symbolP)) | |
2100 | SF_SET_STRING (symbolP); | |
2101 | if (!underscore && S_IS_LOCAL (symbolP)) | |
2102 | SF_SET_LOCAL (symbolP); | |
2103 | } | |
2104 | ||
2105 | /* | |
2106 | * Handle .ln directives. | |
2107 | */ | |
2108 | ||
2109 | static void | |
2110 | obj_coff_ln (appline) | |
2111 | int appline; | |
2112 | { | |
2113 | int l; | |
2114 | ||
2115 | if (! appline && def_symbol_in_progress != NULL) | |
2116 | { | |
2117 | as_warn (_(".ln pseudo-op inside .def/.endef: ignored.")); | |
2118 | demand_empty_rest_of_line (); | |
2119 | return; | |
2120 | } /* wrong context */ | |
2121 | ||
2122 | l = get_absolute_expression (); | |
2123 | c_line_new (0, frag_now_fix (), l, frag_now); | |
2124 | ||
2125 | if (appline) | |
2126 | new_logical_line ((char *) NULL, l - 1); | |
2127 | ||
2128 | #ifndef NO_LISTING | |
2129 | { | |
2130 | extern int listing; | |
2131 | ||
2132 | if (listing) | |
2133 | { | |
2134 | if (! appline) | |
2135 | l += line_base - 1; | |
2136 | listing_source_line ((unsigned int) l); | |
2137 | } | |
2138 | ||
2139 | } | |
2140 | #endif | |
2141 | demand_empty_rest_of_line (); | |
2142 | } | |
2143 | ||
2144 | /* | |
2145 | * def() | |
2146 | * | |
2147 | * Handle .def directives. | |
2148 | * | |
2149 | * One might ask : why can't we symbol_new if the symbol does not | |
2150 | * already exist and fill it with debug information. Because of | |
2151 | * the C_EFCN special symbol. It would clobber the value of the | |
2152 | * function symbol before we have a chance to notice that it is | |
2153 | * a C_EFCN. And a second reason is that the code is more clear this | |
2154 | * way. (at least I think it is :-). | |
2155 | * | |
2156 | */ | |
2157 | ||
2158 | #define SKIP_SEMI_COLON() while (*input_line_pointer++ != ';') | |
2159 | #define SKIP_WHITESPACES() while (*input_line_pointer == ' ' || \ | |
2160 | *input_line_pointer == '\t') \ | |
2161 | input_line_pointer++; | |
2162 | ||
2163 | static void | |
2164 | obj_coff_def (what) | |
2165 | int what; | |
2166 | { | |
2167 | char name_end; /* Char after the end of name */ | |
2168 | char *symbol_name; /* Name of the debug symbol */ | |
2169 | char *symbol_name_copy; /* Temporary copy of the name */ | |
2170 | unsigned int symbol_name_length; | |
2171 | ||
2172 | if (def_symbol_in_progress != NULL) | |
2173 | { | |
2174 | as_warn (_(".def pseudo-op used inside of .def/.endef: ignored.")); | |
2175 | demand_empty_rest_of_line (); | |
2176 | return; | |
2177 | } /* if not inside .def/.endef */ | |
2178 | ||
2179 | SKIP_WHITESPACES (); | |
2180 | ||
2181 | def_symbol_in_progress = (symbolS *) obstack_alloc (¬es, sizeof (*def_symbol_in_progress)); | |
2182 | memset (def_symbol_in_progress, 0, sizeof (*def_symbol_in_progress)); | |
2183 | ||
2184 | symbol_name = input_line_pointer; | |
2185 | name_end = get_symbol_end (); | |
2186 | symbol_name_length = strlen (symbol_name); | |
2187 | symbol_name_copy = xmalloc (symbol_name_length + 1); | |
2188 | strcpy (symbol_name_copy, symbol_name); | |
2189 | #ifdef tc_canonicalize_symbol_name | |
2190 | symbol_name_copy = tc_canonicalize_symbol_name (symbol_name_copy); | |
2191 | #endif | |
2192 | ||
2193 | /* Initialize the new symbol */ | |
2194 | #ifdef STRIP_UNDERSCORE | |
2195 | S_SET_NAME (def_symbol_in_progress, (*symbol_name_copy == '_' | |
2196 | ? symbol_name_copy + 1 | |
2197 | : symbol_name_copy)); | |
2198 | #else /* STRIP_UNDERSCORE */ | |
2199 | S_SET_NAME (def_symbol_in_progress, symbol_name_copy); | |
2200 | #endif /* STRIP_UNDERSCORE */ | |
2201 | /* free(symbol_name_copy); */ | |
2202 | def_symbol_in_progress->sy_name_offset = (unsigned long) ~0; | |
2203 | def_symbol_in_progress->sy_number = ~0; | |
2204 | def_symbol_in_progress->sy_frag = &zero_address_frag; | |
2205 | S_SET_VALUE (def_symbol_in_progress, 0); | |
2206 | ||
2207 | if (S_IS_STRING (def_symbol_in_progress)) | |
2208 | SF_SET_STRING (def_symbol_in_progress); | |
2209 | ||
2210 | *input_line_pointer = name_end; | |
2211 | ||
2212 | demand_empty_rest_of_line (); | |
2213 | } | |
2214 | ||
2215 | unsigned int dim_index; | |
2216 | ||
2217 | ||
2218 | static void | |
2219 | obj_coff_endef (ignore) | |
2220 | int ignore; | |
2221 | { | |
2222 | symbolS *symbolP = 0; | |
2223 | /* DIM BUG FIX sac@cygnus.com */ | |
2224 | dim_index = 0; | |
2225 | if (def_symbol_in_progress == NULL) | |
2226 | { | |
2227 | as_warn (_(".endef pseudo-op used outside of .def/.endef: ignored.")); | |
2228 | demand_empty_rest_of_line (); | |
2229 | return; | |
2230 | } /* if not inside .def/.endef */ | |
2231 | ||
2232 | /* Set the section number according to storage class. */ | |
2233 | switch (S_GET_STORAGE_CLASS (def_symbol_in_progress)) | |
2234 | { | |
2235 | case C_STRTAG: | |
2236 | case C_ENTAG: | |
2237 | case C_UNTAG: | |
2238 | SF_SET_TAG (def_symbol_in_progress); | |
2239 | /* intentional fallthrough */ | |
2240 | case C_FILE: | |
2241 | case C_TPDEF: | |
2242 | SF_SET_DEBUG (def_symbol_in_progress); | |
2243 | S_SET_SEGMENT (def_symbol_in_progress, SEG_DEBUG); | |
2244 | break; | |
2245 | ||
2246 | case C_EFCN: | |
2247 | SF_SET_LOCAL (def_symbol_in_progress); /* Do not emit this symbol. */ | |
2248 | /* intentional fallthrough */ | |
2249 | case C_BLOCK: | |
2250 | SF_SET_PROCESS (def_symbol_in_progress); /* Will need processing before writing */ | |
2251 | /* intentional fallthrough */ | |
2252 | case C_FCN: | |
2253 | S_SET_SEGMENT (def_symbol_in_progress, SEG_E0); | |
2254 | ||
2255 | if (strcmp (S_GET_NAME (def_symbol_in_progress), ".bf") == 0) | |
2256 | { /* .bf */ | |
2257 | if (function_lineoff < 0) | |
2258 | { | |
2259 | fprintf (stderr, _("`.bf' symbol without preceding function\n")); | |
2260 | } /* missing function symbol */ | |
2261 | SA_GET_SYM_LNNOPTR (last_line_symbol) = function_lineoff; | |
2262 | ||
2263 | SF_SET_PROCESS (last_line_symbol); | |
2264 | SF_SET_ADJ_LNNOPTR (last_line_symbol); | |
2265 | SF_SET_PROCESS (def_symbol_in_progress); | |
2266 | function_lineoff = -1; | |
2267 | } | |
2268 | /* Value is always set to . */ | |
2269 | def_symbol_in_progress->sy_frag = frag_now; | |
2270 | S_SET_VALUE (def_symbol_in_progress, (valueT) frag_now_fix ()); | |
2271 | break; | |
2272 | ||
2273 | #ifdef C_AUTOARG | |
2274 | case C_AUTOARG: | |
2275 | #endif /* C_AUTOARG */ | |
2276 | case C_AUTO: | |
2277 | case C_REG: | |
2278 | case C_MOS: | |
2279 | case C_MOE: | |
2280 | case C_MOU: | |
2281 | case C_ARG: | |
2282 | case C_REGPARM: | |
2283 | case C_FIELD: | |
2284 | case C_EOS: | |
2285 | SF_SET_DEBUG (def_symbol_in_progress); | |
2286 | S_SET_SEGMENT (def_symbol_in_progress, absolute_section); | |
2287 | break; | |
2288 | ||
2289 | case C_EXT: | |
2290 | case C_WEAKEXT: | |
2291 | #ifdef TE_PE | |
2292 | case C_NT_WEAK: | |
2293 | #endif | |
2294 | case C_STAT: | |
2295 | case C_LABEL: | |
2296 | /* Valid but set somewhere else (s_comm, s_lcomm, colon) */ | |
2297 | break; | |
2298 | ||
2299 | case C_USTATIC: | |
2300 | case C_EXTDEF: | |
2301 | case C_ULABEL: | |
2302 | as_warn (_("unexpected storage class %d"), S_GET_STORAGE_CLASS (def_symbol_in_progress)); | |
2303 | break; | |
2304 | } /* switch on storage class */ | |
2305 | ||
2306 | /* Now that we have built a debug symbol, try to find if we should | |
2307 | merge with an existing symbol or not. If a symbol is C_EFCN or | |
2308 | absolute_section or untagged SEG_DEBUG it never merges. We also | |
2309 | don't merge labels, which are in a different namespace, nor | |
2310 | symbols which have not yet been defined since they are typically | |
2311 | unique, nor do we merge tags with non-tags. */ | |
2312 | ||
2313 | /* Two cases for functions. Either debug followed by definition or | |
2314 | definition followed by debug. For definition first, we will | |
2315 | merge the debug symbol into the definition. For debug first, the | |
2316 | lineno entry MUST point to the definition function or else it | |
2317 | will point off into space when crawl_symbols() merges the debug | |
2318 | symbol into the real symbol. Therefor, let's presume the debug | |
2319 | symbol is a real function reference. */ | |
2320 | ||
2321 | /* FIXME-SOON If for some reason the definition label/symbol is | |
2322 | never seen, this will probably leave an undefined symbol at link | |
2323 | time. */ | |
2324 | ||
2325 | if (S_GET_STORAGE_CLASS (def_symbol_in_progress) == C_EFCN | |
2326 | || S_GET_STORAGE_CLASS (def_symbol_in_progress) == C_LABEL | |
2327 | || (S_GET_SEGMENT (def_symbol_in_progress) == SEG_DEBUG | |
2328 | && !SF_GET_TAG (def_symbol_in_progress)) | |
2329 | || S_GET_SEGMENT (def_symbol_in_progress) == absolute_section | |
2330 | || def_symbol_in_progress->sy_value.X_op != O_constant | |
2331 | || (symbolP = symbol_find_base (S_GET_NAME (def_symbol_in_progress), DO_NOT_STRIP)) == NULL | |
2332 | || (SF_GET_TAG (def_symbol_in_progress) != SF_GET_TAG (symbolP))) | |
2333 | { | |
2334 | symbol_append (def_symbol_in_progress, symbol_lastP, &symbol_rootP, | |
2335 | &symbol_lastP); | |
2336 | } | |
2337 | else | |
2338 | { | |
2339 | /* This symbol already exists, merge the newly created symbol | |
2340 | into the old one. This is not mandatory. The linker can | |
2341 | handle duplicate symbols correctly. But I guess that it save | |
2342 | a *lot* of space if the assembly file defines a lot of | |
2343 | symbols. [loic] */ | |
2344 | ||
2345 | /* The debug entry (def_symbol_in_progress) is merged into the | |
2346 | previous definition. */ | |
2347 | ||
2348 | c_symbol_merge (def_symbol_in_progress, symbolP); | |
2349 | /* FIXME-SOON Should *def_symbol_in_progress be free'd? xoxorich. */ | |
2350 | def_symbol_in_progress = symbolP; | |
2351 | ||
2352 | if (SF_GET_FUNCTION (def_symbol_in_progress) | |
2353 | || SF_GET_TAG (def_symbol_in_progress) | |
2354 | || S_GET_STORAGE_CLASS (def_symbol_in_progress) == C_STAT) | |
2355 | { | |
2356 | /* For functions, and tags, and static symbols, the symbol | |
2357 | *must* be where the debug symbol appears. Move the | |
2358 | existing symbol to the current place. */ | |
2359 | /* If it already is at the end of the symbol list, do nothing */ | |
2360 | if (def_symbol_in_progress != symbol_lastP) | |
2361 | { | |
2362 | symbol_remove (def_symbol_in_progress, &symbol_rootP, | |
2363 | &symbol_lastP); | |
2364 | symbol_append (def_symbol_in_progress, symbol_lastP, | |
2365 | &symbol_rootP, &symbol_lastP); | |
2366 | } /* if not already in place */ | |
2367 | } /* if function */ | |
2368 | } /* normal or mergable */ | |
2369 | ||
2370 | if (SF_GET_TAG (def_symbol_in_progress)) | |
2371 | { | |
2372 | symbolS *oldtag; | |
2373 | ||
2374 | oldtag = symbol_find_base (S_GET_NAME (def_symbol_in_progress), | |
2375 | DO_NOT_STRIP); | |
2376 | if (oldtag == NULL || ! SF_GET_TAG (oldtag)) | |
2377 | tag_insert (S_GET_NAME (def_symbol_in_progress), | |
2378 | def_symbol_in_progress); | |
2379 | } | |
2380 | ||
2381 | if (SF_GET_FUNCTION (def_symbol_in_progress)) | |
2382 | { | |
2383 | know (sizeof (def_symbol_in_progress) <= sizeof (long)); | |
2384 | function_lineoff | |
2385 | = c_line_new (def_symbol_in_progress, 0, 0, &zero_address_frag); | |
2386 | ||
2387 | SF_SET_PROCESS (def_symbol_in_progress); | |
2388 | ||
2389 | if (symbolP == NULL) | |
2390 | { | |
2391 | /* That is, if this is the first time we've seen the | |
2392 | function... */ | |
2393 | symbol_table_insert (def_symbol_in_progress); | |
2394 | } /* definition follows debug */ | |
2395 | } /* Create the line number entry pointing to the function being defined */ | |
2396 | ||
2397 | def_symbol_in_progress = NULL; | |
2398 | demand_empty_rest_of_line (); | |
2399 | } | |
2400 | ||
2401 | static void | |
2402 | obj_coff_dim (ignore) | |
2403 | int ignore; | |
2404 | { | |
2405 | int dim_index; | |
2406 | ||
2407 | if (def_symbol_in_progress == NULL) | |
2408 | { | |
2409 | as_warn (_(".dim pseudo-op used outside of .def/.endef: ignored.")); | |
2410 | demand_empty_rest_of_line (); | |
2411 | return; | |
2412 | } /* if not inside .def/.endef */ | |
2413 | ||
2414 | S_SET_NUMBER_AUXILIARY (def_symbol_in_progress, 1); | |
2415 | ||
2416 | for (dim_index = 0; dim_index < DIMNUM; dim_index++) | |
2417 | { | |
2418 | SKIP_WHITESPACES (); | |
2419 | SA_SET_SYM_DIMEN (def_symbol_in_progress, dim_index, | |
2420 | get_absolute_expression ()); | |
2421 | ||
2422 | switch (*input_line_pointer) | |
2423 | { | |
2424 | case ',': | |
2425 | input_line_pointer++; | |
2426 | break; | |
2427 | ||
2428 | default: | |
2429 | as_warn (_("badly formed .dim directive ignored")); | |
2430 | /* intentional fallthrough */ | |
2431 | case '\n': | |
2432 | case ';': | |
2433 | dim_index = DIMNUM; | |
2434 | break; | |
2435 | } | |
2436 | } | |
2437 | ||
2438 | demand_empty_rest_of_line (); | |
2439 | } | |
2440 | ||
2441 | static void | |
2442 | obj_coff_line (ignore) | |
2443 | int ignore; | |
2444 | { | |
2445 | int this_base; | |
2446 | const char *name; | |
2447 | ||
2448 | if (def_symbol_in_progress == NULL) | |
2449 | { | |
2450 | obj_coff_ln (0); | |
2451 | return; | |
2452 | } | |
2453 | ||
2454 | name = S_GET_NAME (def_symbol_in_progress); | |
2455 | this_base = get_absolute_expression (); | |
2456 | ||
2457 | /* Only .bf symbols indicate the use of a new base line number; the | |
2458 | line numbers associated with .ef, .bb, .eb are relative to the | |
2459 | start of the containing function. */ | |
2460 | if (!strcmp (".bf", name)) | |
2461 | { | |
2462 | #if 0 /* XXX Can we ever have line numbers going backwards? */ | |
2463 | if (this_base > line_base) | |
2464 | #endif | |
2465 | { | |
2466 | line_base = this_base; | |
2467 | } | |
2468 | ||
2469 | #ifndef NO_LISTING | |
2470 | { | |
2471 | extern int listing; | |
2472 | if (listing) | |
2473 | { | |
2474 | listing_source_line ((unsigned int) line_base); | |
2475 | } | |
2476 | } | |
2477 | #endif | |
2478 | } | |
2479 | ||
2480 | S_SET_NUMBER_AUXILIARY (def_symbol_in_progress, 1); | |
2481 | SA_SET_SYM_LNNO (def_symbol_in_progress, this_base); | |
2482 | ||
2483 | demand_empty_rest_of_line (); | |
2484 | } | |
2485 | ||
2486 | static void | |
2487 | obj_coff_size (ignore) | |
2488 | int ignore; | |
2489 | { | |
2490 | if (def_symbol_in_progress == NULL) | |
2491 | { | |
2492 | as_warn (_(".size pseudo-op used outside of .def/.endef ignored.")); | |
2493 | demand_empty_rest_of_line (); | |
2494 | return; | |
2495 | } /* if not inside .def/.endef */ | |
2496 | ||
2497 | S_SET_NUMBER_AUXILIARY (def_symbol_in_progress, 1); | |
2498 | SA_SET_SYM_SIZE (def_symbol_in_progress, get_absolute_expression ()); | |
2499 | demand_empty_rest_of_line (); | |
2500 | } | |
2501 | ||
2502 | static void | |
2503 | obj_coff_scl (ignore) | |
2504 | int ignore; | |
2505 | { | |
2506 | if (def_symbol_in_progress == NULL) | |
2507 | { | |
2508 | as_warn (_(".scl pseudo-op used outside of .def/.endef ignored.")); | |
2509 | demand_empty_rest_of_line (); | |
2510 | return; | |
2511 | } /* if not inside .def/.endef */ | |
2512 | ||
2513 | S_SET_STORAGE_CLASS (def_symbol_in_progress, get_absolute_expression ()); | |
2514 | demand_empty_rest_of_line (); | |
2515 | } | |
2516 | ||
2517 | static void | |
2518 | obj_coff_tag (ignore) | |
2519 | int ignore; | |
2520 | { | |
2521 | char *symbol_name; | |
2522 | char name_end; | |
2523 | ||
2524 | if (def_symbol_in_progress == NULL) | |
2525 | { | |
2526 | as_warn (_(".tag pseudo-op used outside of .def/.endef ignored.")); | |
2527 | demand_empty_rest_of_line (); | |
2528 | return; | |
2529 | } | |
2530 | ||
2531 | S_SET_NUMBER_AUXILIARY (def_symbol_in_progress, 1); | |
2532 | symbol_name = input_line_pointer; | |
2533 | name_end = get_symbol_end (); | |
2534 | #ifdef tc_canonicalize_symbol_name | |
2535 | symbol_name = tc_canonicalize_symbol_name (symbol_name); | |
2536 | #endif | |
2537 | ||
2538 | /* Assume that the symbol referred to by .tag is always defined. | |
2539 | This was a bad assumption. I've added find_or_make. xoxorich. */ | |
2540 | SA_SET_SYM_TAGNDX (def_symbol_in_progress, | |
2541 | (long) tag_find_or_make (symbol_name)); | |
2542 | if (SA_GET_SYM_TAGNDX (def_symbol_in_progress) == 0L) | |
2543 | { | |
2544 | as_warn (_("tag not found for .tag %s"), symbol_name); | |
2545 | } /* not defined */ | |
2546 | ||
2547 | SF_SET_TAGGED (def_symbol_in_progress); | |
2548 | *input_line_pointer = name_end; | |
2549 | ||
2550 | demand_empty_rest_of_line (); | |
2551 | } | |
2552 | ||
2553 | static void | |
2554 | obj_coff_type (ignore) | |
2555 | int ignore; | |
2556 | { | |
2557 | if (def_symbol_in_progress == NULL) | |
2558 | { | |
2559 | as_warn (_(".type pseudo-op used outside of .def/.endef ignored.")); | |
2560 | demand_empty_rest_of_line (); | |
2561 | return; | |
2562 | } /* if not inside .def/.endef */ | |
2563 | ||
2564 | S_SET_DATA_TYPE (def_symbol_in_progress, get_absolute_expression ()); | |
2565 | ||
2566 | if (ISFCN (S_GET_DATA_TYPE (def_symbol_in_progress)) && | |
2567 | S_GET_STORAGE_CLASS (def_symbol_in_progress) != C_TPDEF) | |
2568 | { | |
2569 | SF_SET_FUNCTION (def_symbol_in_progress); | |
2570 | } /* is a function */ | |
2571 | ||
2572 | demand_empty_rest_of_line (); | |
2573 | } | |
2574 | ||
2575 | static void | |
2576 | obj_coff_val (ignore) | |
2577 | int ignore; | |
2578 | { | |
2579 | if (def_symbol_in_progress == NULL) | |
2580 | { | |
2581 | as_warn (_(".val pseudo-op used outside of .def/.endef ignored.")); | |
2582 | demand_empty_rest_of_line (); | |
2583 | return; | |
2584 | } /* if not inside .def/.endef */ | |
2585 | ||
2586 | if (is_name_beginner (*input_line_pointer)) | |
2587 | { | |
2588 | char *symbol_name = input_line_pointer; | |
2589 | char name_end = get_symbol_end (); | |
2590 | ||
2591 | #ifdef tc_canonicalize_symbol_name | |
2592 | symbol_name = tc_canonicalize_symbol_name (symbol_name); | |
2593 | #endif | |
2594 | ||
2595 | if (!strcmp (symbol_name, ".")) | |
2596 | { | |
2597 | def_symbol_in_progress->sy_frag = frag_now; | |
2598 | S_SET_VALUE (def_symbol_in_progress, (valueT) frag_now_fix ()); | |
2599 | /* If the .val is != from the .def (e.g. statics) */ | |
2600 | } | |
2601 | else if (strcmp (S_GET_NAME (def_symbol_in_progress), symbol_name)) | |
2602 | { | |
2603 | def_symbol_in_progress->sy_value.X_op = O_symbol; | |
2604 | def_symbol_in_progress->sy_value.X_add_symbol = | |
2605 | symbol_find_or_make (symbol_name); | |
2606 | def_symbol_in_progress->sy_value.X_op_symbol = NULL; | |
2607 | def_symbol_in_progress->sy_value.X_add_number = 0; | |
2608 | ||
2609 | /* If the segment is undefined when the forward reference is | |
2610 | resolved, then copy the segment id from the forward | |
2611 | symbol. */ | |
2612 | SF_SET_GET_SEGMENT (def_symbol_in_progress); | |
2613 | ||
2614 | /* FIXME: gcc can generate address expressions | |
2615 | here in unusual cases (search for "obscure" | |
2616 | in sdbout.c). We just ignore the offset | |
2617 | here, thus generating incorrect debugging | |
2618 | information. We ignore the rest of the | |
2619 | line just below. */ | |
2620 | } | |
2621 | /* Otherwise, it is the name of a non debug symbol and | |
2622 | its value will be calculated later. */ | |
2623 | *input_line_pointer = name_end; | |
2624 | ||
2625 | /* FIXME: this is to avoid an error message in the | |
2626 | FIXME case mentioned just above. */ | |
2627 | while (! is_end_of_line[(unsigned char) *input_line_pointer]) | |
2628 | ++input_line_pointer; | |
2629 | } | |
2630 | else | |
2631 | { | |
2632 | S_SET_VALUE (def_symbol_in_progress, | |
2633 | (valueT) get_absolute_expression ()); | |
2634 | } /* if symbol based */ | |
2635 | ||
2636 | demand_empty_rest_of_line (); | |
2637 | } | |
2638 | ||
2639 | #ifdef TE_PE | |
2640 | ||
2641 | /* Handle the .linkonce pseudo-op. This is parsed by s_linkonce in | |
2642 | read.c, which then calls this object file format specific routine. */ | |
2643 | ||
2644 | void | |
2645 | obj_coff_pe_handle_link_once (type) | |
2646 | enum linkonce_type type; | |
2647 | { | |
2648 | seg_info (now_seg)->scnhdr.s_flags |= IMAGE_SCN_LNK_COMDAT; | |
2649 | ||
2650 | /* We store the type in the seg_info structure, and use it to set up | |
2651 | the auxiliary entry for the section symbol in c_section_symbol. */ | |
2652 | seg_info (now_seg)->linkonce = type; | |
2653 | } | |
2654 | ||
2655 | #endif /* TE_PE */ | |
2656 | ||
2657 | void | |
2658 | coff_obj_read_begin_hook () | |
2659 | { | |
2660 | /* These had better be the same. Usually 18 bytes. */ | |
2661 | #ifndef BFD_HEADERS | |
2662 | know (sizeof (SYMENT) == sizeof (AUXENT)); | |
2663 | know (SYMESZ == AUXESZ); | |
2664 | #endif | |
2665 | tag_init (); | |
2666 | } | |
2667 | ||
2668 | /* This function runs through the symbol table and puts all the | |
2669 | externals onto another chain */ | |
2670 | ||
2671 | /* The chain of globals. */ | |
2672 | symbolS *symbol_globalP; | |
2673 | symbolS *symbol_global_lastP; | |
2674 | ||
2675 | /* The chain of externals */ | |
2676 | symbolS *symbol_externP; | |
2677 | symbolS *symbol_extern_lastP; | |
2678 | ||
2679 | stack *block_stack; | |
2680 | symbolS *last_functionP; | |
2681 | static symbolS *last_bfP; | |
2682 | symbolS *last_tagP; | |
2683 | ||
2684 | static unsigned int | |
2685 | yank_symbols () | |
2686 | { | |
2687 | symbolS *symbolP; | |
2688 | unsigned int symbol_number = 0; | |
2689 | unsigned int last_file_symno = 0; | |
2690 | ||
2691 | struct filename_list *filename_list_scan = filename_list_head; | |
2692 | ||
2693 | for (symbolP = symbol_rootP; | |
2694 | symbolP; | |
2695 | symbolP = symbolP ? symbol_next (symbolP) : symbol_rootP) | |
2696 | { | |
2697 | if (symbolP->sy_mri_common) | |
2698 | { | |
2699 | if (S_GET_STORAGE_CLASS (symbolP) == C_EXT | |
2700 | #ifdef TE_PE | |
2701 | || S_GET_STORAGE_CLASS (symbolP) == C_NT_WEAK | |
2702 | #endif | |
2703 | || S_GET_STORAGE_CLASS (symbolP) == C_WEAKEXT) | |
2704 | as_bad (_("%s: global symbols not supported in common sections"), | |
2705 | S_GET_NAME (symbolP)); | |
2706 | symbol_remove (symbolP, &symbol_rootP, &symbol_lastP); | |
2707 | continue; | |
2708 | } | |
2709 | ||
2710 | if (!SF_GET_DEBUG (symbolP)) | |
2711 | { | |
2712 | /* Debug symbols do not need all this rubbish */ | |
2713 | symbolS *real_symbolP; | |
2714 | ||
2715 | /* L* and C_EFCN symbols never merge. */ | |
2716 | if (!SF_GET_LOCAL (symbolP) | |
2717 | && !SF_GET_STATICS (symbolP) | |
2718 | && S_GET_STORAGE_CLASS (symbolP) != C_LABEL | |
2719 | && symbolP->sy_value.X_op == O_constant | |
2720 | && (real_symbolP = symbol_find_base (S_GET_NAME (symbolP), DO_NOT_STRIP)) | |
2721 | && real_symbolP != symbolP) | |
2722 | { | |
2723 | /* FIXME-SOON: where do dups come from? | |
2724 | Maybe tag references before definitions? xoxorich. */ | |
2725 | /* Move the debug data from the debug symbol to the | |
2726 | real symbol. Do NOT do the oposite (i.e. move from | |
2727 | real symbol to debug symbol and remove real symbol from the | |
2728 | list.) Because some pointers refer to the real symbol | |
2729 | whereas no pointers refer to the debug symbol. */ | |
2730 | c_symbol_merge (symbolP, real_symbolP); | |
2731 | /* Replace the current symbol by the real one */ | |
2732 | /* The symbols will never be the last or the first | |
2733 | because : 1st symbol is .file and 3 last symbols are | |
2734 | .text, .data, .bss */ | |
2735 | symbol_remove (real_symbolP, &symbol_rootP, &symbol_lastP); | |
2736 | symbol_insert (real_symbolP, symbolP, &symbol_rootP, &symbol_lastP); | |
2737 | symbol_remove (symbolP, &symbol_rootP, &symbol_lastP); | |
2738 | symbolP = real_symbolP; | |
2739 | } /* if not local but dup'd */ | |
2740 | ||
2741 | if (flag_readonly_data_in_text && (S_GET_SEGMENT (symbolP) == SEG_E1)) | |
2742 | { | |
2743 | S_SET_SEGMENT (symbolP, SEG_E0); | |
2744 | } /* push data into text */ | |
2745 | ||
2746 | resolve_symbol_value (symbolP, 1); | |
2747 | ||
2748 | if (S_GET_STORAGE_CLASS (symbolP) == C_NULL) | |
2749 | { | |
2750 | if (!S_IS_DEFINED (symbolP) && !SF_GET_LOCAL (symbolP)) | |
2751 | { | |
2752 | S_SET_EXTERNAL (symbolP); | |
2753 | } | |
2754 | else if (S_GET_SEGMENT (symbolP) == SEG_E0) | |
2755 | { | |
2756 | S_SET_STORAGE_CLASS (symbolP, C_LABEL); | |
2757 | } | |
2758 | else | |
2759 | { | |
2760 | S_SET_STORAGE_CLASS (symbolP, C_STAT); | |
2761 | } | |
2762 | } | |
2763 | ||
2764 | /* Mainly to speed up if not -g */ | |
2765 | if (SF_GET_PROCESS (symbolP)) | |
2766 | { | |
2767 | /* Handle the nested blocks auxiliary info. */ | |
2768 | if (S_GET_STORAGE_CLASS (symbolP) == C_BLOCK) | |
2769 | { | |
2770 | if (!strcmp (S_GET_NAME (symbolP), ".bb")) | |
2771 | stack_push (block_stack, (char *) &symbolP); | |
2772 | else | |
2773 | { /* .eb */ | |
2774 | register symbolS *begin_symbolP; | |
2775 | begin_symbolP = *(symbolS **) stack_pop (block_stack); | |
2776 | if (begin_symbolP == (symbolS *) 0) | |
2777 | as_warn (_("mismatched .eb")); | |
2778 | else | |
2779 | SA_SET_SYM_ENDNDX (begin_symbolP, symbol_number + 2); | |
2780 | } | |
2781 | } | |
2782 | /* If we are able to identify the type of a function, and we | |
2783 | are out of a function (last_functionP == 0) then, the | |
2784 | function symbol will be associated with an auxiliary | |
2785 | entry. */ | |
2786 | if (last_functionP == (symbolS *) 0 && | |
2787 | SF_GET_FUNCTION (symbolP)) | |
2788 | { | |
2789 | last_functionP = symbolP; | |
2790 | ||
2791 | if (S_GET_NUMBER_AUXILIARY (symbolP) < 1) | |
2792 | { | |
2793 | S_SET_NUMBER_AUXILIARY (symbolP, 1); | |
2794 | } /* make it at least 1 */ | |
2795 | ||
2796 | /* Clobber possible stale .dim information. */ | |
2797 | #if 0 | |
2798 | /* Iffed out by steve - this fries the lnnoptr info too */ | |
2799 | bzero (symbolP->sy_symbol.ost_auxent[0].x_sym.x_fcnary.x_ary.x_dimen, | |
2800 | sizeof (symbolP->sy_symbol.ost_auxent[0].x_sym.x_fcnary.x_ary.x_dimen)); | |
2801 | #endif | |
2802 | } | |
2803 | if (S_GET_STORAGE_CLASS (symbolP) == C_FCN) | |
2804 | { | |
2805 | if (strcmp (S_GET_NAME (symbolP), ".bf") == 0) | |
2806 | { | |
2807 | if (last_bfP != NULL) | |
2808 | SA_SET_SYM_ENDNDX (last_bfP, symbol_number); | |
2809 | last_bfP = symbolP; | |
2810 | } | |
2811 | } | |
2812 | else if (S_GET_STORAGE_CLASS (symbolP) == C_EFCN) | |
2813 | { | |
2814 | /* I don't even know if this is needed for sdb. But | |
2815 | the standard assembler generates it, so... */ | |
2816 | if (last_functionP == (symbolS *) 0) | |
2817 | as_fatal (_("C_EFCN symbol out of scope")); | |
2818 | SA_SET_SYM_FSIZE (last_functionP, | |
2819 | (long) (S_GET_VALUE (symbolP) - | |
2820 | S_GET_VALUE (last_functionP))); | |
2821 | SA_SET_SYM_ENDNDX (last_functionP, symbol_number); | |
2822 | last_functionP = (symbolS *) 0; | |
2823 | } | |
2824 | } | |
2825 | } | |
2826 | else if (SF_GET_TAG (symbolP)) | |
2827 | { | |
2828 | /* First descriptor of a structure must point to | |
2829 | the first slot after the structure description. */ | |
2830 | last_tagP = symbolP; | |
2831 | ||
2832 | } | |
2833 | else if (S_GET_STORAGE_CLASS (symbolP) == C_EOS) | |
2834 | { | |
2835 | /* +2 take in account the current symbol */ | |
2836 | SA_SET_SYM_ENDNDX (last_tagP, symbol_number + 2); | |
2837 | } | |
2838 | else if (S_GET_STORAGE_CLASS (symbolP) == C_FILE) | |
2839 | { | |
2840 | /* If the filename was too long to fit in the | |
2841 | auxent, put it in the string table */ | |
2842 | if (SA_GET_FILE_FNAME_ZEROS (symbolP) == 0 | |
2843 | && SA_GET_FILE_FNAME_OFFSET (symbolP) != 0) | |
2844 | { | |
2845 | SA_SET_FILE_FNAME_OFFSET (symbolP, string_byte_count); | |
2846 | string_byte_count += strlen (filename_list_scan->filename) + 1; | |
2847 | filename_list_scan = filename_list_scan->next; | |
2848 | } | |
2849 | if (S_GET_VALUE (symbolP)) | |
2850 | { | |
2851 | S_SET_VALUE (symbolP, last_file_symno); | |
2852 | last_file_symno = symbol_number; | |
2853 | } /* no one points at the first .file symbol */ | |
2854 | } /* if debug or tag or eos or file */ | |
2855 | ||
2856 | #ifdef tc_frob_coff_symbol | |
2857 | tc_frob_coff_symbol (symbolP); | |
2858 | #endif | |
2859 | ||
2860 | /* We must put the external symbols apart. The loader | |
2861 | does not bomb if we do not. But the references in | |
2862 | the endndx field for a .bb symbol are not corrected | |
2863 | if an external symbol is removed between .bb and .be. | |
2864 | I.e in the following case : | |
2865 | [20] .bb endndx = 22 | |
2866 | [21] foo external | |
2867 | [22] .be | |
2868 | ld will move the symbol 21 to the end of the list but | |
2869 | endndx will still be 22 instead of 21. */ | |
2870 | ||
2871 | ||
2872 | if (SF_GET_LOCAL (symbolP)) | |
2873 | { | |
2874 | /* remove C_EFCN and LOCAL (L...) symbols */ | |
2875 | /* next pointer remains valid */ | |
2876 | symbol_remove (symbolP, &symbol_rootP, &symbol_lastP); | |
2877 | ||
2878 | } | |
2879 | else if (symbolP->sy_value.X_op == O_symbol | |
2880 | && (! S_IS_DEFINED (symbolP) || S_IS_COMMON (symbolP))) | |
2881 | { | |
2882 | /* Skip symbols which were equated to undefined or common | |
2883 | symbols. */ | |
2884 | symbol_remove (symbolP, &symbol_rootP, &symbol_lastP); | |
2885 | } | |
2886 | else if (!S_IS_DEFINED (symbolP) | |
2887 | && !S_IS_DEBUG (symbolP) | |
2888 | && !SF_GET_STATICS (symbolP) | |
2889 | && (S_GET_STORAGE_CLASS (symbolP) == C_EXT | |
2890 | #ifdef TE_PE | |
2891 | || S_GET_STORAGE_CLASS (symbolP) == C_NT_WEAK | |
2892 | #endif | |
2893 | || S_GET_STORAGE_CLASS (symbolP) == C_WEAKEXT)) | |
2894 | { | |
2895 | /* if external, Remove from the list */ | |
2896 | symbolS *hold = symbol_previous (symbolP); | |
2897 | ||
2898 | symbol_remove (symbolP, &symbol_rootP, &symbol_lastP); | |
2899 | symbol_clear_list_pointers (symbolP); | |
2900 | symbol_append (symbolP, symbol_extern_lastP, &symbol_externP, &symbol_extern_lastP); | |
2901 | symbolP = hold; | |
2902 | } | |
2903 | else if (! S_IS_DEBUG (symbolP) | |
2904 | && ! SF_GET_STATICS (symbolP) | |
2905 | && ! SF_GET_FUNCTION (symbolP) | |
2906 | && (S_GET_STORAGE_CLASS (symbolP) == C_EXT | |
2907 | #ifdef TE_PE | |
2908 | || S_GET_STORAGE_CLASS (symbolP) == C_NT_WEAK | |
2909 | #endif | |
2910 | || S_GET_STORAGE_CLASS (symbolP) == C_NT_WEAK)) | |
2911 | { | |
2912 | symbolS *hold = symbol_previous (symbolP); | |
2913 | ||
2914 | /* The O'Reilly COFF book says that defined global symbols | |
2915 | come at the end of the symbol table, just before | |
2916 | undefined global symbols. */ | |
2917 | ||
2918 | symbol_remove (symbolP, &symbol_rootP, &symbol_lastP); | |
2919 | symbol_clear_list_pointers (symbolP); | |
2920 | symbol_append (symbolP, symbol_global_lastP, &symbol_globalP, | |
2921 | &symbol_global_lastP); | |
2922 | symbolP = hold; | |
2923 | } | |
2924 | else | |
2925 | { | |
2926 | if (SF_GET_STRING (symbolP)) | |
2927 | { | |
2928 | symbolP->sy_name_offset = string_byte_count; | |
2929 | string_byte_count += strlen (S_GET_NAME (symbolP)) + 1; | |
2930 | } | |
2931 | else | |
2932 | { | |
2933 | symbolP->sy_name_offset = 0; | |
2934 | } /* fix "long" names */ | |
2935 | ||
2936 | symbolP->sy_number = symbol_number; | |
2937 | symbol_number += 1 + S_GET_NUMBER_AUXILIARY (symbolP); | |
2938 | } /* if local symbol */ | |
2939 | } /* traverse the symbol list */ | |
2940 | return symbol_number; | |
2941 | ||
2942 | } | |
2943 | ||
2944 | ||
2945 | static unsigned int | |
2946 | glue_symbols (head, tail) | |
2947 | symbolS **head; | |
2948 | symbolS **tail; | |
2949 | { | |
2950 | unsigned int symbol_number = 0; | |
2951 | ||
2952 | while (*head != NULL) | |
2953 | { | |
2954 | symbolS *tmp = *head; | |
2955 | ||
2956 | /* append */ | |
2957 | symbol_remove (tmp, head, tail); | |
2958 | symbol_append (tmp, symbol_lastP, &symbol_rootP, &symbol_lastP); | |
2959 | ||
2960 | /* and process */ | |
2961 | if (SF_GET_STRING (tmp)) | |
2962 | { | |
2963 | tmp->sy_name_offset = string_byte_count; | |
2964 | string_byte_count += strlen (S_GET_NAME (tmp)) + 1; | |
2965 | } | |
2966 | else | |
2967 | { | |
2968 | tmp->sy_name_offset = 0; | |
2969 | } /* fix "long" names */ | |
2970 | ||
2971 | tmp->sy_number = symbol_number; | |
2972 | symbol_number += 1 + S_GET_NUMBER_AUXILIARY (tmp); | |
2973 | } /* append the entire extern chain */ | |
2974 | ||
2975 | return symbol_number; | |
2976 | } | |
2977 | ||
2978 | static unsigned int | |
2979 | tie_tags () | |
2980 | { | |
2981 | unsigned int symbol_number = 0; | |
2982 | symbolS *symbolP; | |
2983 | ||
2984 | for (symbolP = symbol_rootP; symbolP; symbolP = symbol_next (symbolP)) | |
2985 | { | |
2986 | symbolP->sy_number = symbol_number; | |
2987 | ||
2988 | if (SF_GET_TAGGED (symbolP)) | |
2989 | { | |
2990 | SA_SET_SYM_TAGNDX | |
2991 | (symbolP, | |
2992 | ((symbolS *) SA_GET_SYM_TAGNDX (symbolP))->sy_number); | |
2993 | } | |
2994 | ||
2995 | symbol_number += 1 + S_GET_NUMBER_AUXILIARY (symbolP); | |
2996 | } | |
2997 | ||
2998 | return symbol_number; | |
2999 | } | |
3000 | ||
3001 | static void | |
3002 | crawl_symbols (h, abfd) | |
3003 | object_headers *h; | |
3004 | bfd * abfd; | |
3005 | { | |
3006 | unsigned int i; | |
3007 | ||
3008 | /* Initialize the stack used to keep track of the matching .bb .be */ | |
3009 | ||
3010 | block_stack = stack_init (512, sizeof (symbolS *)); | |
3011 | ||
3012 | /* The symbol list should be ordered according to the following sequence | |
3013 | * order : | |
3014 | * . .file symbol | |
3015 | * . debug entries for functions | |
3016 | * . fake symbols for the sections, including .text .data and .bss | |
3017 | * . defined symbols | |
3018 | * . undefined symbols | |
3019 | * But this is not mandatory. The only important point is to put the | |
3020 | * undefined symbols at the end of the list. | |
3021 | */ | |
3022 | ||
3023 | /* Is there a .file symbol ? If not insert one at the beginning. */ | |
3024 | if (symbol_rootP == NULL | |
3025 | || S_GET_STORAGE_CLASS (symbol_rootP) != C_FILE) | |
3026 | { | |
3027 | c_dot_file_symbol ("fake"); | |
3028 | } | |
3029 | ||
3030 | /* | |
3031 | * Build up static symbols for the sections, they are filled in later | |
3032 | */ | |
3033 | ||
3034 | ||
3035 | for (i = SEG_E0; i < SEG_LAST; i++) | |
3036 | if (segment_info[i].scnhdr.s_name[0]) | |
3037 | segment_info[i].dot = c_section_symbol (segment_info[i].name, | |
3038 | i - SEG_E0 + 1); | |
3039 | ||
3040 | /* Take all the externals out and put them into another chain */ | |
3041 | H_SET_SYMBOL_TABLE_SIZE (h, yank_symbols ()); | |
3042 | /* Take the externals and glue them onto the end.*/ | |
3043 | H_SET_SYMBOL_TABLE_SIZE (h, | |
3044 | (H_GET_SYMBOL_COUNT (h) | |
3045 | + glue_symbols (&symbol_globalP, | |
3046 | &symbol_global_lastP) | |
3047 | + glue_symbols (&symbol_externP, | |
3048 | &symbol_extern_lastP))); | |
3049 | ||
3050 | H_SET_SYMBOL_TABLE_SIZE (h, tie_tags ()); | |
3051 | know (symbol_globalP == NULL); | |
3052 | know (symbol_global_lastP == NULL); | |
3053 | know (symbol_externP == NULL); | |
3054 | know (symbol_extern_lastP == NULL); | |
3055 | } | |
3056 | ||
3057 | /* | |
3058 | * Find strings by crawling along symbol table chain. | |
3059 | */ | |
3060 | ||
3061 | void | |
3062 | w_strings (where) | |
3063 | char *where; | |
3064 | { | |
3065 | symbolS *symbolP; | |
3066 | struct filename_list *filename_list_scan = filename_list_head; | |
3067 | ||
3068 | /* Gotta do md_ byte-ordering stuff for string_byte_count first - KWK */ | |
3069 | md_number_to_chars (where, (valueT) string_byte_count, 4); | |
3070 | where += 4; | |
3071 | ||
3072 | #ifdef COFF_LONG_SECTION_NAMES | |
3073 | /* Support long section names as found in PE. This code must | |
3074 | coordinate with that in coff_header_append and write_object_file. */ | |
3075 | { | |
3076 | unsigned int i; | |
3077 | ||
3078 | for (i = SEG_E0; i < SEG_LAST; i++) | |
3079 | { | |
3080 | if (segment_info[i].scnhdr.s_name[0] | |
3081 | && strlen (segment_info[i].name) > SCNNMLEN) | |
3082 | { | |
3083 | unsigned int size; | |
3084 | ||
3085 | size = strlen (segment_info[i].name) + 1; | |
3086 | memcpy (where, segment_info[i].name, size); | |
3087 | where += size; | |
3088 | } | |
3089 | } | |
3090 | } | |
3091 | #endif /* COFF_LONG_SECTION_NAMES */ | |
3092 | ||
3093 | for (symbolP = symbol_rootP; | |
3094 | symbolP; | |
3095 | symbolP = symbol_next (symbolP)) | |
3096 | { | |
3097 | unsigned int size; | |
3098 | ||
3099 | if (SF_GET_STRING (symbolP)) | |
3100 | { | |
3101 | size = strlen (S_GET_NAME (symbolP)) + 1; | |
3102 | memcpy (where, S_GET_NAME (symbolP), size); | |
3103 | where += size; | |
3104 | } | |
3105 | if (S_GET_STORAGE_CLASS (symbolP) == C_FILE | |
3106 | && SA_GET_FILE_FNAME_ZEROS (symbolP) == 0 | |
3107 | && SA_GET_FILE_FNAME_OFFSET (symbolP) != 0) | |
3108 | { | |
3109 | size = strlen (filename_list_scan->filename) + 1; | |
3110 | memcpy (where, filename_list_scan->filename, size); | |
3111 | filename_list_scan = filename_list_scan ->next; | |
3112 | where += size; | |
3113 | } | |
3114 | } | |
3115 | } | |
3116 | ||
3117 | static void | |
3118 | do_linenos_for (abfd, h, file_cursor) | |
3119 | bfd * abfd; | |
3120 | object_headers * h; | |
3121 | unsigned long *file_cursor; | |
3122 | { | |
3123 | unsigned int idx; | |
3124 | unsigned long start = *file_cursor; | |
3125 | ||
3126 | for (idx = SEG_E0; idx < SEG_LAST; idx++) | |
3127 | { | |
3128 | segment_info_type *s = segment_info + idx; | |
3129 | ||
3130 | ||
3131 | if (s->scnhdr.s_nlnno != 0) | |
3132 | { | |
3133 | struct lineno_list *line_ptr; | |
3134 | ||
3135 | struct external_lineno *buffer = | |
3136 | (struct external_lineno *) xmalloc (s->scnhdr.s_nlnno * LINESZ); | |
3137 | ||
3138 | struct external_lineno *dst = buffer; | |
3139 | ||
3140 | /* Run through the table we've built and turn it into its external | |
3141 | form, take this chance to remove duplicates */ | |
3142 | ||
3143 | for (line_ptr = s->lineno_list_head; | |
3144 | line_ptr != (struct lineno_list *) NULL; | |
3145 | line_ptr = line_ptr->next) | |
3146 | { | |
3147 | ||
3148 | if (line_ptr->line.l_lnno == 0) | |
3149 | { | |
3150 | /* Turn a pointer to a symbol into the symbols' index */ | |
3151 | line_ptr->line.l_addr.l_symndx = | |
3152 | ((symbolS *) line_ptr->line.l_addr.l_symndx)->sy_number; | |
3153 | } | |
3154 | else | |
3155 | { | |
3156 | line_ptr->line.l_addr.l_paddr += ((struct frag *) (line_ptr->frag))->fr_address; | |
3157 | } | |
3158 | ||
3159 | ||
3160 | (void) bfd_coff_swap_lineno_out (abfd, &(line_ptr->line), dst); | |
3161 | dst++; | |
3162 | ||
3163 | } | |
3164 | ||
3165 | s->scnhdr.s_lnnoptr = *file_cursor; | |
3166 | ||
3167 | bfd_write (buffer, 1, s->scnhdr.s_nlnno * LINESZ, abfd); | |
3168 | free (buffer); | |
3169 | ||
3170 | *file_cursor += s->scnhdr.s_nlnno * LINESZ; | |
3171 | } | |
3172 | } | |
3173 | H_SET_LINENO_SIZE (h, *file_cursor - start); | |
3174 | } | |
3175 | ||
3176 | ||
3177 | /* Now we run through the list of frag chains in a segment and | |
3178 | make all the subsegment frags appear at the end of the | |
3179 | list, as if the seg 0 was extra long */ | |
3180 | ||
3181 | static void | |
3182 | remove_subsegs () | |
3183 | { | |
3184 | unsigned int i; | |
3185 | ||
3186 | for (i = SEG_E0; i < SEG_UNKNOWN; i++) | |
3187 | { | |
3188 | frchainS *head = segment_info[i].frchainP; | |
3189 | fragS dummy; | |
3190 | fragS *prev_frag = &dummy; | |
3191 | ||
3192 | while (head && head->frch_seg == i) | |
3193 | { | |
3194 | prev_frag->fr_next = head->frch_root; | |
3195 | prev_frag = head->frch_last; | |
3196 | head = head->frch_next; | |
3197 | } | |
3198 | prev_frag->fr_next = 0; | |
3199 | } | |
3200 | } | |
3201 | ||
3202 | unsigned long machine; | |
3203 | int coff_flags; | |
3204 | extern void | |
3205 | write_object_file () | |
3206 | { | |
3207 | int i; | |
3208 | const char *name; | |
3209 | struct frchain *frchain_ptr; | |
3210 | ||
3211 | object_headers headers; | |
3212 | unsigned long file_cursor; | |
3213 | bfd *abfd; | |
3214 | unsigned int addr; | |
3215 | abfd = bfd_openw (out_file_name, TARGET_FORMAT); | |
3216 | ||
3217 | ||
3218 | if (abfd == 0) | |
3219 | { | |
3220 | as_perror (_("FATAL: Can't create %s"), out_file_name); | |
3221 | exit (EXIT_FAILURE); | |
3222 | } | |
3223 | bfd_set_format (abfd, bfd_object); | |
3224 | bfd_set_arch_mach (abfd, BFD_ARCH, machine); | |
3225 | ||
3226 | string_byte_count = 4; | |
3227 | ||
3228 | for (frchain_ptr = frchain_root; | |
3229 | frchain_ptr != (struct frchain *) NULL; | |
3230 | frchain_ptr = frchain_ptr->frch_next) | |
3231 | { | |
3232 | /* Run through all the sub-segments and align them up. Also | |
3233 | close any open frags. We tack a .fill onto the end of the | |
3234 | frag chain so that any .align's size can be worked by looking | |
3235 | at the next frag. */ | |
3236 | ||
3237 | subseg_set (frchain_ptr->frch_seg, frchain_ptr->frch_subseg); | |
b9e57a38 | 3238 | |
252b5132 RH |
3239 | #ifndef SUB_SEGMENT_ALIGN |
3240 | #define SUB_SEGMENT_ALIGN(SEG) 1 | |
3241 | #endif | |
3242 | #ifdef md_do_align | |
3243 | md_do_align (SUB_SEGMENT_ALIGN (now_seg), (char *) NULL, 0, 0, | |
3244 | alignment_done); | |
3245 | #endif | |
b9e57a38 ILT |
3246 | frag_align (SUB_SEGMENT_ALIGN (now_seg), |
3247 | subseg_text_p (now_seg) ? NOP_OPCODE : 0, | |
3248 | 0); | |
252b5132 RH |
3249 | #ifdef md_do_align |
3250 | alignment_done: | |
3251 | #endif | |
3252 | frag_wane (frag_now); | |
3253 | frag_now->fr_fix = 0; | |
3254 | know (frag_now->fr_next == NULL); | |
3255 | } | |
3256 | ||
3257 | ||
3258 | remove_subsegs (); | |
3259 | ||
3260 | ||
3261 | for (i = SEG_E0; i < SEG_UNKNOWN; i++) | |
3262 | { | |
3263 | relax_segment (segment_info[i].frchainP->frch_root, i); | |
3264 | } | |
3265 | ||
3266 | H_SET_NUMBER_OF_SECTIONS (&headers, 0); | |
3267 | ||
3268 | /* Find out how big the sections are, and set the addresses. */ | |
3269 | addr = 0; | |
3270 | for (i = SEG_E0; i < SEG_UNKNOWN; i++) | |
3271 | { | |
3272 | long size; | |
3273 | ||
3274 | segment_info[i].scnhdr.s_paddr = addr; | |
3275 | segment_info[i].scnhdr.s_vaddr = addr; | |
3276 | ||
3277 | if (segment_info[i].scnhdr.s_name[0]) | |
3278 | { | |
3279 | H_SET_NUMBER_OF_SECTIONS (&headers, | |
3280 | H_GET_NUMBER_OF_SECTIONS (&headers) + 1); | |
3281 | ||
3282 | #ifdef COFF_LONG_SECTION_NAMES | |
3283 | /* Support long section names as found in PE. This code | |
3284 | must coordinate with that in coff_header_append and | |
3285 | w_strings. */ | |
3286 | { | |
3287 | unsigned int len; | |
3288 | ||
3289 | len = strlen (segment_info[i].name); | |
3290 | if (len > SCNNMLEN) | |
3291 | string_byte_count += len + 1; | |
3292 | } | |
3293 | #endif /* COFF_LONG_SECTION_NAMES */ | |
3294 | } | |
3295 | ||
3296 | size = size_section (abfd, (unsigned int) i); | |
3297 | addr += size; | |
3298 | ||
3299 | /* I think the section alignment is only used on the i960; the | |
3300 | i960 needs it, and it should do no harm on other targets. */ | |
3301 | #ifdef ALIGNMENT_IN_S_FLAGS | |
3302 | segment_info[i].scnhdr.s_flags |= (section_alignment[i] & 0xF) << 8; | |
3303 | #else | |
3304 | segment_info[i].scnhdr.s_align = 1 << section_alignment[i]; | |
3305 | #endif | |
3306 | ||
3307 | if (i == SEG_E0) | |
3308 | H_SET_TEXT_SIZE (&headers, size); | |
3309 | else if (i == SEG_E1) | |
3310 | H_SET_DATA_SIZE (&headers, size); | |
3311 | else if (i == SEG_E2) | |
3312 | H_SET_BSS_SIZE (&headers, size); | |
3313 | } | |
3314 | ||
3315 | /* Turn the gas native symbol table shape into a coff symbol table */ | |
3316 | crawl_symbols (&headers, abfd); | |
3317 | ||
3318 | if (string_byte_count == 4) | |
3319 | string_byte_count = 0; | |
3320 | ||
3321 | H_SET_STRING_SIZE (&headers, string_byte_count); | |
3322 | ||
3323 | #ifdef tc_frob_file | |
3324 | tc_frob_file (); | |
3325 | #endif | |
3326 | ||
3327 | for (i = SEG_E0; i < SEG_UNKNOWN; i++) | |
3328 | { | |
3329 | fixup_mdeps (segment_info[i].frchainP->frch_root, &headers, i); | |
3330 | fixup_segment (&segment_info[i], i); | |
3331 | } | |
3332 | ||
3333 | /* Look for ".stab" segments and fill in their initial symbols | |
3334 | correctly. */ | |
3335 | for (i = SEG_E0; i < SEG_UNKNOWN; i++) | |
3336 | { | |
3337 | name = segment_info[i].name; | |
3338 | ||
3339 | if (name != NULL | |
3340 | && strncmp (".stab", name, 5) == 0 | |
3341 | && strncmp (".stabstr", name, 8) != 0) | |
3342 | adjust_stab_section (abfd, i); | |
3343 | } | |
3344 | ||
3345 | file_cursor = H_GET_TEXT_FILE_OFFSET (&headers); | |
3346 | ||
3347 | bfd_seek (abfd, (file_ptr) file_cursor, 0); | |
3348 | ||
3349 | /* Plant the data */ | |
3350 | ||
3351 | fill_section (abfd, &headers, &file_cursor); | |
3352 | ||
3353 | do_relocs_for (abfd, &headers, &file_cursor); | |
3354 | ||
3355 | do_linenos_for (abfd, &headers, &file_cursor); | |
3356 | ||
3357 | H_SET_FILE_MAGIC_NUMBER (&headers, COFF_MAGIC); | |
3358 | #ifndef OBJ_COFF_OMIT_TIMESTAMP | |
3359 | H_SET_TIME_STAMP (&headers, (long)time((time_t *)0)); | |
3360 | #else | |
3361 | H_SET_TIME_STAMP (&headers, 0); | |
3362 | #endif | |
3363 | #ifdef TC_COFF_SET_MACHINE | |
3364 | TC_COFF_SET_MACHINE (&headers); | |
3365 | #endif | |
3366 | ||
3367 | #ifndef COFF_FLAGS | |
3368 | #define COFF_FLAGS 0 | |
3369 | #endif | |
3370 | ||
3371 | #ifdef KEEP_RELOC_INFO | |
3372 | H_SET_FLAGS (&headers, ((H_GET_LINENO_SIZE(&headers) ? 0 : F_LNNO) | | |
3373 | COFF_FLAGS | coff_flags)); | |
3374 | #else | |
3375 | H_SET_FLAGS (&headers, ((H_GET_LINENO_SIZE(&headers) ? 0 : F_LNNO) | | |
3376 | (H_GET_RELOCATION_SIZE(&headers) ? 0 : F_RELFLG) | | |
3377 | COFF_FLAGS | coff_flags)); | |
3378 | #endif | |
3379 | ||
3380 | { | |
3381 | unsigned int symtable_size = H_GET_SYMBOL_TABLE_SIZE (&headers); | |
3382 | char *buffer1 = xmalloc (symtable_size + string_byte_count + 1); | |
3383 | ||
3384 | H_SET_SYMBOL_TABLE_POINTER (&headers, bfd_tell (abfd)); | |
3385 | w_symbols (abfd, buffer1, symbol_rootP); | |
3386 | if (string_byte_count > 0) | |
3387 | w_strings (buffer1 + symtable_size); | |
3388 | bfd_write (buffer1, 1, symtable_size + string_byte_count, abfd); | |
3389 | free (buffer1); | |
3390 | } | |
3391 | ||
3392 | coff_header_append (abfd, &headers); | |
3393 | #if 0 | |
3394 | /* Recent changes to write need this, but where it should | |
3395 | go is up to Ken.. */ | |
3396 | if (bfd_close_all_done (abfd) == false) | |
3397 | as_fatal (_("Can't close %s: %s"), out_file_name, | |
3398 | bfd_errmsg (bfd_get_error ())); | |
3399 | #else | |
3400 | { | |
3401 | extern bfd *stdoutput; | |
3402 | stdoutput = abfd; | |
3403 | } | |
3404 | #endif | |
3405 | ||
3406 | } | |
3407 | ||
3408 | /* Add a new segment. This is called from subseg_new via the | |
3409 | obj_new_segment macro. */ | |
3410 | ||
3411 | segT | |
3412 | obj_coff_add_segment (name) | |
3413 | const char *name; | |
3414 | { | |
3415 | unsigned int i; | |
3416 | ||
3417 | #ifndef COFF_LONG_SECTION_NAMES | |
3418 | char buf[SCNNMLEN + 1]; | |
3419 | ||
3420 | strncpy (buf, name, SCNNMLEN); | |
3421 | buf[SCNNMLEN] = '\0'; | |
3422 | name = buf; | |
3423 | #endif | |
3424 | ||
3425 | for (i = SEG_E0; i < SEG_LAST && segment_info[i].scnhdr.s_name[0]; i++) | |
3426 | if (strcmp (name, segment_info[i].name) == 0) | |
3427 | return (segT) i; | |
3428 | ||
3429 | if (i == SEG_LAST) | |
3430 | { | |
3431 | as_bad (_("Too many new sections; can't add \"%s\""), name); | |
3432 | return now_seg; | |
3433 | } | |
3434 | ||
3435 | /* Add a new section. */ | |
3436 | strncpy (segment_info[i].scnhdr.s_name, name, | |
3437 | sizeof (segment_info[i].scnhdr.s_name)); | |
3438 | segment_info[i].scnhdr.s_flags = STYP_REG; | |
3439 | segment_info[i].name = xstrdup (name); | |
3440 | ||
3441 | return (segT) i; | |
3442 | } | |
3443 | ||
3444 | /* | |
3445 | * implement the .section pseudo op: | |
3446 | * .section name {, "flags"} | |
3447 | * ^ ^ | |
3448 | * | +--- optional flags: 'b' for bss | |
3449 | * | 'i' for info | |
3450 | * +-- section name 'l' for lib | |
3451 | * 'n' for noload | |
3452 | * 'o' for over | |
3453 | * 'w' for data | |
3454 | * 'd' (apparently m88k for data) | |
3455 | * 'x' for text | |
3456 | * 'r' for read-only data | |
3457 | * But if the argument is not a quoted string, treat it as a | |
3458 | * subsegment number. | |
3459 | */ | |
3460 | ||
3461 | void | |
3462 | obj_coff_section (ignore) | |
3463 | int ignore; | |
3464 | { | |
3465 | /* Strip out the section name */ | |
3466 | char *section_name, *name; | |
3467 | char c; | |
3468 | unsigned int exp; | |
3469 | long flags; | |
3470 | ||
3471 | if (flag_mri) | |
3472 | { | |
3473 | char type; | |
3474 | ||
3475 | s_mri_sect (&type); | |
3476 | flags = 0; | |
3477 | if (type == 'C') | |
3478 | flags = STYP_TEXT; | |
3479 | else if (type == 'D') | |
3480 | flags = STYP_DATA; | |
3481 | segment_info[now_seg].scnhdr.s_flags |= flags; | |
3482 | ||
3483 | return; | |
3484 | } | |
3485 | ||
3486 | section_name = input_line_pointer; | |
3487 | c = get_symbol_end (); | |
3488 | ||
3489 | name = xmalloc (input_line_pointer - section_name + 1); | |
3490 | strcpy (name, section_name); | |
3491 | ||
3492 | *input_line_pointer = c; | |
3493 | ||
3494 | exp = 0; | |
3495 | flags = 0; | |
3496 | ||
3497 | SKIP_WHITESPACE (); | |
3498 | if (*input_line_pointer == ',') | |
3499 | { | |
3500 | ++input_line_pointer; | |
3501 | SKIP_WHITESPACE (); | |
3502 | ||
3503 | if (*input_line_pointer != '"') | |
3504 | exp = get_absolute_expression (); | |
3505 | else | |
3506 | { | |
3507 | ++input_line_pointer; | |
3508 | while (*input_line_pointer != '"' | |
3509 | && ! is_end_of_line[(unsigned char) *input_line_pointer]) | |
3510 | { | |
3511 | switch (*input_line_pointer) | |
3512 | { | |
3513 | case 'b': flags |= STYP_BSS; break; | |
3514 | case 'i': flags |= STYP_INFO; break; | |
3515 | case 'l': flags |= STYP_LIB; break; | |
3516 | case 'n': flags |= STYP_NOLOAD; break; | |
3517 | case 'o': flags |= STYP_OVER; break; | |
3518 | case 'd': | |
3519 | case 'w': flags |= STYP_DATA; break; | |
3520 | case 'x': flags |= STYP_TEXT; break; | |
3521 | case 'r': flags |= STYP_LIT; break; | |
3522 | default: | |
3523 | as_warn(_("unknown section attribute '%c'"), | |
3524 | *input_line_pointer); | |
3525 | break; | |
3526 | } | |
3527 | ++input_line_pointer; | |
3528 | } | |
3529 | if (*input_line_pointer == '"') | |
3530 | ++input_line_pointer; | |
3531 | } | |
3532 | } | |
3533 | ||
3534 | subseg_new (name, (subsegT) exp); | |
3535 | ||
3536 | segment_info[now_seg].scnhdr.s_flags |= flags; | |
3537 | ||
3538 | demand_empty_rest_of_line (); | |
3539 | } | |
3540 | ||
3541 | ||
3542 | static void | |
3543 | obj_coff_text (ignore) | |
3544 | int ignore; | |
3545 | { | |
3546 | subseg_new (".text", get_absolute_expression ()); | |
3547 | } | |
3548 | ||
3549 | ||
3550 | static void | |
3551 | obj_coff_data (ignore) | |
3552 | int ignore; | |
3553 | { | |
3554 | if (flag_readonly_data_in_text) | |
3555 | subseg_new (".text", get_absolute_expression () + 1000); | |
3556 | else | |
3557 | subseg_new (".data", get_absolute_expression ()); | |
3558 | } | |
3559 | ||
3560 | static void | |
3561 | obj_coff_ident (ignore) | |
3562 | int ignore; | |
3563 | { | |
3564 | segT current_seg = now_seg; /* save current seg */ | |
3565 | subsegT current_subseg = now_subseg; | |
3566 | subseg_new (".comment", 0); /* .comment seg */ | |
3567 | stringer (1); /* read string */ | |
3568 | subseg_set (current_seg, current_subseg); /* restore current seg */ | |
3569 | } | |
3570 | ||
3571 | void | |
3572 | c_symbol_merge (debug, normal) | |
3573 | symbolS *debug; | |
3574 | symbolS *normal; | |
3575 | { | |
3576 | S_SET_DATA_TYPE (normal, S_GET_DATA_TYPE (debug)); | |
3577 | S_SET_STORAGE_CLASS (normal, S_GET_STORAGE_CLASS (debug)); | |
3578 | ||
3579 | if (S_GET_NUMBER_AUXILIARY (debug) > S_GET_NUMBER_AUXILIARY (normal)) | |
3580 | { | |
3581 | S_SET_NUMBER_AUXILIARY (normal, S_GET_NUMBER_AUXILIARY (debug)); | |
3582 | } /* take the most we have */ | |
3583 | ||
3584 | if (S_GET_NUMBER_AUXILIARY (debug) > 0) | |
3585 | { | |
3586 | memcpy ((char *) &normal->sy_symbol.ost_auxent[0], | |
3587 | (char *) &debug->sy_symbol.ost_auxent[0], | |
3588 | (unsigned int) (S_GET_NUMBER_AUXILIARY (debug) * AUXESZ)); | |
3589 | } /* Move all the auxiliary information */ | |
3590 | ||
3591 | /* Move the debug flags. */ | |
3592 | SF_SET_DEBUG_FIELD (normal, SF_GET_DEBUG_FIELD (debug)); | |
3593 | } /* c_symbol_merge() */ | |
3594 | ||
3595 | static int | |
3596 | c_line_new (symbol, paddr, line_number, frag) | |
3597 | symbolS * symbol; | |
3598 | long paddr; | |
3599 | int line_number; | |
3600 | fragS * frag; | |
3601 | { | |
3602 | struct lineno_list *new_line = | |
3603 | (struct lineno_list *) xmalloc (sizeof (struct lineno_list)); | |
3604 | ||
3605 | segment_info_type *s = segment_info + now_seg; | |
3606 | new_line->line.l_lnno = line_number; | |
3607 | ||
3608 | if (line_number == 0) | |
3609 | { | |
3610 | last_line_symbol = symbol; | |
3611 | new_line->line.l_addr.l_symndx = (long) symbol; | |
3612 | } | |
3613 | else | |
3614 | { | |
3615 | new_line->line.l_addr.l_paddr = paddr; | |
3616 | } | |
3617 | ||
3618 | new_line->frag = (char *) frag; | |
3619 | new_line->next = (struct lineno_list *) NULL; | |
3620 | ||
3621 | ||
3622 | if (s->lineno_list_head == (struct lineno_list *) NULL) | |
3623 | { | |
3624 | s->lineno_list_head = new_line; | |
3625 | } | |
3626 | else | |
3627 | { | |
3628 | s->lineno_list_tail->next = new_line; | |
3629 | } | |
3630 | s->lineno_list_tail = new_line; | |
3631 | return LINESZ * s->scnhdr.s_nlnno++; | |
3632 | } | |
3633 | ||
3634 | void | |
3635 | c_dot_file_symbol (filename) | |
3636 | char *filename; | |
3637 | { | |
3638 | symbolS *symbolP; | |
3639 | ||
3640 | symbolP = symbol_new (".file", | |
3641 | SEG_DEBUG, | |
3642 | 0, | |
3643 | &zero_address_frag); | |
3644 | ||
3645 | S_SET_STORAGE_CLASS (symbolP, C_FILE); | |
3646 | S_SET_NUMBER_AUXILIARY (symbolP, 1); | |
3647 | ||
3648 | if (strlen (filename) > FILNMLEN) | |
3649 | { | |
3650 | /* Filename is too long to fit into an auxent, | |
3651 | we stick it into the string table instead. We keep | |
3652 | a linked list of the filenames we find so we can emit | |
3653 | them later.*/ | |
3654 | struct filename_list *f = ((struct filename_list *) | |
3655 | xmalloc (sizeof (struct filename_list))); | |
3656 | ||
3657 | f->filename = filename; | |
3658 | f->next = 0; | |
3659 | ||
3660 | SA_SET_FILE_FNAME_ZEROS (symbolP, 0); | |
3661 | SA_SET_FILE_FNAME_OFFSET (symbolP, 1); | |
3662 | ||
3663 | if (filename_list_tail) | |
3664 | filename_list_tail->next = f; | |
3665 | else | |
3666 | filename_list_head = f; | |
3667 | filename_list_tail = f; | |
3668 | } | |
3669 | else | |
3670 | { | |
3671 | SA_SET_FILE_FNAME (symbolP, filename); | |
3672 | } | |
3673 | #ifndef NO_LISTING | |
3674 | { | |
3675 | extern int listing; | |
3676 | if (listing) | |
3677 | { | |
3678 | listing_source_file (filename); | |
3679 | } | |
3680 | ||
3681 | } | |
3682 | ||
3683 | #endif | |
3684 | SF_SET_DEBUG (symbolP); | |
3685 | S_SET_VALUE (symbolP, (valueT) previous_file_symbol); | |
3686 | ||
3687 | previous_file_symbol = symbolP; | |
3688 | ||
3689 | /* Make sure that the symbol is first on the symbol chain */ | |
3690 | if (symbol_rootP != symbolP) | |
3691 | { | |
3692 | symbol_remove (symbolP, &symbol_rootP, &symbol_lastP); | |
3693 | symbol_insert (symbolP, symbol_rootP, &symbol_rootP, &symbol_lastP); | |
3694 | } | |
3695 | } /* c_dot_file_symbol() */ | |
3696 | ||
3697 | /* | |
3698 | * Build a 'section static' symbol. | |
3699 | */ | |
3700 | ||
3701 | symbolS * | |
3702 | c_section_symbol (name, idx) | |
3703 | char *name; | |
3704 | int idx; | |
3705 | { | |
3706 | symbolS *symbolP; | |
3707 | ||
3708 | symbolP = symbol_find_base (name, DO_NOT_STRIP); | |
3709 | if (symbolP == NULL) | |
3710 | symbolP = symbol_new (name, idx, 0, &zero_address_frag); | |
3711 | else | |
3712 | { | |
3713 | /* Mmmm. I just love violating interfaces. Makes me feel...dirty. */ | |
3714 | S_SET_SEGMENT (symbolP, idx); | |
3715 | symbolP->sy_frag = &zero_address_frag; | |
3716 | } | |
3717 | ||
3718 | S_SET_STORAGE_CLASS (symbolP, C_STAT); | |
3719 | S_SET_NUMBER_AUXILIARY (symbolP, 1); | |
3720 | ||
3721 | SF_SET_STATICS (symbolP); | |
3722 | ||
3723 | #ifdef TE_DELTA | |
3724 | /* manfred@s-direktnet.de: section symbols *must* have the LOCAL bit cleared, | |
3725 | which is set by the new definition of LOCAL_LABEL in tc-m68k.h. */ | |
3726 | SF_CLEAR_LOCAL (symbolP); | |
3727 | #endif | |
3728 | #ifdef TE_PE | |
3729 | /* If the .linkonce pseudo-op was used for this section, we must | |
3730 | store the information in the auxiliary entry for the section | |
3731 | symbol. */ | |
3732 | if (segment_info[idx].linkonce != LINKONCE_UNSET) | |
3733 | { | |
3734 | int type; | |
3735 | ||
3736 | switch (segment_info[idx].linkonce) | |
3737 | { | |
3738 | default: | |
3739 | abort (); | |
3740 | case LINKONCE_DISCARD: | |
3741 | type = IMAGE_COMDAT_SELECT_ANY; | |
3742 | break; | |
3743 | case LINKONCE_ONE_ONLY: | |
3744 | type = IMAGE_COMDAT_SELECT_NODUPLICATES; | |
3745 | break; | |
3746 | case LINKONCE_SAME_SIZE: | |
3747 | type = IMAGE_COMDAT_SELECT_SAME_SIZE; | |
3748 | break; | |
3749 | case LINKONCE_SAME_CONTENTS: | |
3750 | type = IMAGE_COMDAT_SELECT_EXACT_MATCH; | |
3751 | break; | |
3752 | } | |
3753 | ||
3754 | SYM_AUXENT (symbolP)->x_scn.x_comdat = type; | |
3755 | } | |
3756 | #endif /* TE_PE */ | |
3757 | ||
3758 | return symbolP; | |
3759 | } /* c_section_symbol() */ | |
3760 | ||
3761 | static void | |
3762 | w_symbols (abfd, where, symbol_rootP) | |
3763 | bfd * abfd; | |
3764 | char *where; | |
3765 | symbolS * symbol_rootP; | |
3766 | { | |
3767 | symbolS *symbolP; | |
3768 | unsigned int i; | |
3769 | ||
3770 | /* First fill in those values we have only just worked out */ | |
3771 | for (i = SEG_E0; i < SEG_LAST; i++) | |
3772 | { | |
3773 | symbolP = segment_info[i].dot; | |
3774 | if (symbolP) | |
3775 | { | |
3776 | SA_SET_SCN_SCNLEN (symbolP, segment_info[i].scnhdr.s_size); | |
3777 | SA_SET_SCN_NRELOC (symbolP, segment_info[i].scnhdr.s_nreloc); | |
3778 | SA_SET_SCN_NLINNO (symbolP, segment_info[i].scnhdr.s_nlnno); | |
3779 | } | |
3780 | } | |
3781 | ||
3782 | /* | |
3783 | * Emit all symbols left in the symbol chain. | |
3784 | */ | |
3785 | for (symbolP = symbol_rootP; symbolP; symbolP = symbol_next (symbolP)) | |
3786 | { | |
3787 | /* Used to save the offset of the name. It is used to point | |
3788 | to the string in memory but must be a file offset. */ | |
3789 | register char *temp; | |
3790 | ||
3791 | /* We can't fix the lnnoptr field in yank_symbols with the other | |
3792 | adjustments, because we have to wait until we know where they | |
3793 | go in the file. */ | |
3794 | if (SF_GET_ADJ_LNNOPTR (symbolP)) | |
3795 | { | |
3796 | SA_GET_SYM_LNNOPTR (symbolP) += | |
3797 | segment_info[S_GET_SEGMENT (symbolP)].scnhdr.s_lnnoptr; | |
3798 | } | |
3799 | ||
3800 | tc_coff_symbol_emit_hook (symbolP); | |
3801 | ||
3802 | temp = S_GET_NAME (symbolP); | |
3803 | if (SF_GET_STRING (symbolP)) | |
3804 | { | |
3805 | S_SET_OFFSET (symbolP, symbolP->sy_name_offset); | |
3806 | S_SET_ZEROES (symbolP, 0); | |
3807 | } | |
3808 | else | |
3809 | { | |
3810 | memset (symbolP->sy_symbol.ost_entry.n_name, 0, SYMNMLEN); | |
3811 | strncpy (symbolP->sy_symbol.ost_entry.n_name, temp, SYMNMLEN); | |
3812 | } | |
3813 | where = symbol_to_chars (abfd, where, symbolP); | |
3814 | S_SET_NAME (symbolP, temp); | |
3815 | } | |
3816 | ||
3817 | } /* w_symbols() */ | |
3818 | ||
3819 | static void | |
3820 | obj_coff_lcomm (ignore) | |
3821 | int ignore; | |
3822 | { | |
3823 | s_lcomm(0); | |
3824 | return; | |
3825 | #if 0 | |
3826 | char *name; | |
3827 | char c; | |
3828 | int temp; | |
3829 | char *p; | |
3830 | ||
3831 | symbolS *symbolP; | |
3832 | ||
3833 | name = input_line_pointer; | |
3834 | ||
3835 | c = get_symbol_end (); | |
3836 | p = input_line_pointer; | |
3837 | *p = c; | |
3838 | SKIP_WHITESPACE (); | |
3839 | if (*input_line_pointer != ',') | |
3840 | { | |
3841 | as_bad (_("Expected comma after name")); | |
3842 | ignore_rest_of_line (); | |
3843 | return; | |
3844 | } | |
3845 | if (*input_line_pointer == '\n') | |
3846 | { | |
3847 | as_bad (_("Missing size expression")); | |
3848 | return; | |
3849 | } | |
3850 | input_line_pointer++; | |
3851 | if ((temp = get_absolute_expression ()) < 0) | |
3852 | { | |
3853 | as_warn (_("lcomm length (%d.) <0! Ignored."), temp); | |
3854 | ignore_rest_of_line (); | |
3855 | return; | |
3856 | } | |
3857 | *p = 0; | |
3858 | ||
3859 | symbolP = symbol_find_or_make(name); | |
3860 | ||
3861 | if (S_GET_SEGMENT(symbolP) == SEG_UNKNOWN && | |
3862 | S_GET_VALUE(symbolP) == 0) | |
3863 | { | |
3864 | if (! need_pass_2) | |
3865 | { | |
3866 | char *p; | |
3867 | segT current_seg = now_seg; /* save current seg */ | |
3868 | subsegT current_subseg = now_subseg; | |
3869 | ||
3870 | subseg_set (SEG_E2, 1); | |
3871 | symbolP->sy_frag = frag_now; | |
3872 | p = frag_var(rs_org, 1, 1, (relax_substateT)0, symbolP, | |
3873 | (offsetT) temp, (char *) 0); | |
3874 | *p = 0; | |
3875 | subseg_set (current_seg, current_subseg); /* restore current seg */ | |
3876 | S_SET_SEGMENT(symbolP, SEG_E2); | |
3877 | S_SET_STORAGE_CLASS(symbolP, C_STAT); | |
3878 | } | |
3879 | } | |
3880 | else | |
3881 | as_bad(_("Symbol %s already defined"), name); | |
3882 | ||
3883 | demand_empty_rest_of_line(); | |
3884 | #endif | |
3885 | } | |
3886 | ||
3887 | static void | |
3888 | fixup_mdeps (frags, h, this_segment) | |
3889 | fragS * frags; | |
3890 | object_headers * h; | |
3891 | segT this_segment; | |
3892 | { | |
3893 | subseg_change (this_segment, 0); | |
3894 | while (frags) | |
3895 | { | |
3896 | switch (frags->fr_type) | |
3897 | { | |
3898 | case rs_align: | |
3899 | case rs_align_code: | |
3900 | case rs_org: | |
3901 | #ifdef HANDLE_ALIGN | |
3902 | HANDLE_ALIGN (frags); | |
3903 | #endif | |
3904 | frags->fr_type = rs_fill; | |
3905 | frags->fr_offset = | |
3906 | ((frags->fr_next->fr_address - frags->fr_address - frags->fr_fix) | |
3907 | / frags->fr_var); | |
3908 | break; | |
3909 | case rs_machine_dependent: | |
3910 | md_convert_frag (h, this_segment, frags); | |
3911 | frag_wane (frags); | |
3912 | break; | |
3913 | default: | |
3914 | ; | |
3915 | } | |
3916 | frags = frags->fr_next; | |
3917 | } | |
3918 | } | |
3919 | ||
3920 | #if 1 | |
3921 | ||
3922 | #ifndef TC_FORCE_RELOCATION | |
3923 | #define TC_FORCE_RELOCATION(fix) 0 | |
3924 | #endif | |
3925 | ||
3926 | static void | |
3927 | fixup_segment (segP, this_segment_type) | |
3928 | segment_info_type * segP; | |
3929 | segT this_segment_type; | |
3930 | { | |
3931 | register fixS * fixP; | |
3932 | register symbolS *add_symbolP; | |
3933 | register symbolS *sub_symbolP; | |
3934 | long add_number; | |
3935 | register int size; | |
3936 | register char *place; | |
3937 | register long where; | |
3938 | register char pcrel; | |
3939 | register fragS *fragP; | |
3940 | register segT add_symbol_segment = absolute_section; | |
3941 | ||
3942 | for (fixP = segP->fix_root; fixP; fixP = fixP->fx_next) | |
3943 | { | |
3944 | fragP = fixP->fx_frag; | |
3945 | know (fragP); | |
3946 | where = fixP->fx_where; | |
3947 | place = fragP->fr_literal + where; | |
3948 | size = fixP->fx_size; | |
3949 | add_symbolP = fixP->fx_addsy; | |
3950 | sub_symbolP = fixP->fx_subsy; | |
3951 | add_number = fixP->fx_offset; | |
3952 | pcrel = fixP->fx_pcrel; | |
3953 | ||
3954 | /* We want function-relative stabs to work on systems which | |
3955 | may use a relaxing linker; thus we must handle the sym1-sym2 | |
3956 | fixups function-relative stabs generates. | |
3957 | ||
3958 | Of course, if you actually enable relaxing in the linker, the | |
3959 | line and block scoping information is going to be incorrect | |
3960 | in some cases. The only way to really fix this is to support | |
3961 | a reloc involving the difference of two symbols. */ | |
3962 | if (linkrelax | |
3963 | && (!sub_symbolP || pcrel)) | |
3964 | continue; | |
3965 | ||
3966 | #ifdef TC_I960 | |
3967 | if (fixP->fx_tcbit && SF_GET_CALLNAME (add_symbolP)) | |
3968 | { | |
3969 | /* Relocation should be done via the associated 'bal' entry | |
3970 | point symbol. */ | |
3971 | ||
3972 | if (!SF_GET_BALNAME (tc_get_bal_of_call (add_symbolP))) | |
3973 | { | |
3974 | as_bad_where (fixP->fx_file, fixP->fx_line, | |
3975 | _("No 'bal' entry point for leafproc %s"), | |
3976 | S_GET_NAME (add_symbolP)); | |
3977 | continue; | |
3978 | } | |
3979 | fixP->fx_addsy = add_symbolP = tc_get_bal_of_call (add_symbolP); | |
3980 | } | |
3981 | #endif | |
3982 | ||
3983 | /* Make sure the symbols have been resolved; this may not have | |
3984 | happened if these are expression symbols. */ | |
3985 | if (add_symbolP != NULL && ! add_symbolP->sy_resolved) | |
3986 | resolve_symbol_value (add_symbolP, 1); | |
3987 | ||
3988 | if (add_symbolP != NULL) | |
3989 | { | |
3990 | /* If this fixup is against a symbol which has been equated | |
3991 | to another symbol, convert it to the other symbol. */ | |
3992 | if (add_symbolP->sy_value.X_op == O_symbol | |
3993 | && (! S_IS_DEFINED (add_symbolP) | |
3994 | || S_IS_COMMON (add_symbolP))) | |
3995 | { | |
3996 | while (add_symbolP->sy_value.X_op == O_symbol | |
3997 | && (! S_IS_DEFINED (add_symbolP) | |
3998 | || S_IS_COMMON (add_symbolP))) | |
3999 | { | |
4000 | symbolS *n; | |
4001 | ||
4002 | /* We must avoid looping, as that can occur with a | |
4003 | badly written program. */ | |
4004 | n = add_symbolP->sy_value.X_add_symbol; | |
4005 | if (n == add_symbolP) | |
4006 | break; | |
4007 | add_number += add_symbolP->sy_value.X_add_number; | |
4008 | add_symbolP = n; | |
4009 | } | |
4010 | fixP->fx_addsy = add_symbolP; | |
4011 | fixP->fx_offset = add_number; | |
4012 | } | |
4013 | } | |
4014 | ||
4015 | if (sub_symbolP != NULL && ! sub_symbolP->sy_resolved) | |
4016 | resolve_symbol_value (sub_symbolP, 1); | |
4017 | ||
4018 | if (add_symbolP != NULL | |
4019 | && add_symbolP->sy_mri_common) | |
4020 | { | |
4021 | know (add_symbolP->sy_value.X_op == O_symbol); | |
4022 | add_number += S_GET_VALUE (add_symbolP); | |
4023 | fixP->fx_offset = add_number; | |
4024 | add_symbolP = fixP->fx_addsy = add_symbolP->sy_value.X_add_symbol; | |
4025 | } | |
4026 | ||
4027 | if (add_symbolP) | |
4028 | { | |
4029 | add_symbol_segment = S_GET_SEGMENT (add_symbolP); | |
4030 | } /* if there is an addend */ | |
4031 | ||
4032 | if (sub_symbolP) | |
4033 | { | |
4034 | if (add_symbolP == NULL || add_symbol_segment == absolute_section) | |
4035 | { | |
4036 | if (add_symbolP != NULL) | |
4037 | { | |
4038 | add_number += S_GET_VALUE (add_symbolP); | |
4039 | add_symbolP = NULL; | |
4040 | fixP->fx_addsy = NULL; | |
4041 | } | |
4042 | ||
4043 | /* It's just -sym. */ | |
4044 | if (S_GET_SEGMENT (sub_symbolP) == absolute_section) | |
4045 | { | |
4046 | add_number -= S_GET_VALUE (sub_symbolP); | |
4047 | fixP->fx_subsy = 0; | |
4048 | fixP->fx_done = 1; | |
4049 | } | |
4050 | else | |
4051 | { | |
4052 | #ifndef TC_M68K | |
4053 | as_bad_where (fixP->fx_file, fixP->fx_line, | |
4054 | _("Negative of non-absolute symbol %s"), | |
4055 | S_GET_NAME (sub_symbolP)); | |
4056 | #endif | |
4057 | add_number -= S_GET_VALUE (sub_symbolP); | |
4058 | } /* not absolute */ | |
4059 | ||
4060 | /* if sub_symbol is in the same segment that add_symbol | |
4061 | and add_symbol is either in DATA, TEXT, BSS or ABSOLUTE */ | |
4062 | } | |
4063 | else if (S_GET_SEGMENT (sub_symbolP) == add_symbol_segment | |
4064 | && SEG_NORMAL (add_symbol_segment)) | |
4065 | { | |
4066 | /* Difference of 2 symbols from same segment. Can't | |
4067 | make difference of 2 undefineds: 'value' means | |
4068 | something different for N_UNDF. */ | |
4069 | #ifdef TC_I960 | |
4070 | /* Makes no sense to use the difference of 2 arbitrary symbols | |
4071 | as the target of a call instruction. */ | |
4072 | if (fixP->fx_tcbit) | |
4073 | { | |
4074 | as_bad_where (fixP->fx_file, fixP->fx_line, | |
4075 | _("callj to difference of 2 symbols")); | |
4076 | } | |
4077 | #endif /* TC_I960 */ | |
4078 | add_number += S_GET_VALUE (add_symbolP) - | |
4079 | S_GET_VALUE (sub_symbolP); | |
4080 | add_symbolP = NULL; | |
4081 | ||
4082 | if (!TC_FORCE_RELOCATION (fixP)) | |
4083 | { | |
4084 | fixP->fx_addsy = NULL; | |
4085 | fixP->fx_subsy = NULL; | |
4086 | fixP->fx_done = 1; | |
4087 | #ifdef TC_M68K /* is this right? */ | |
4088 | pcrel = 0; | |
4089 | fixP->fx_pcrel = 0; | |
4090 | #endif | |
4091 | } | |
4092 | } | |
4093 | else | |
4094 | { | |
4095 | /* Different segments in subtraction. */ | |
4096 | know (!(S_IS_EXTERNAL (sub_symbolP) && (S_GET_SEGMENT (sub_symbolP) == absolute_section))); | |
4097 | ||
4098 | if ((S_GET_SEGMENT (sub_symbolP) == absolute_section)) | |
4099 | { | |
4100 | add_number -= S_GET_VALUE (sub_symbolP); | |
4101 | } | |
4102 | #ifdef DIFF_EXPR_OK | |
4103 | else if (S_GET_SEGMENT (sub_symbolP) == this_segment_type | |
4104 | #if 0 /* Okay for 68k, at least... */ | |
4105 | && !pcrel | |
4106 | #endif | |
4107 | ) | |
4108 | { | |
4109 | /* Make it pc-relative. */ | |
4110 | add_number += (md_pcrel_from (fixP) | |
4111 | - S_GET_VALUE (sub_symbolP)); | |
4112 | pcrel = 1; | |
4113 | fixP->fx_pcrel = 1; | |
4114 | sub_symbolP = 0; | |
4115 | fixP->fx_subsy = 0; | |
4116 | } | |
4117 | #endif | |
4118 | else | |
4119 | { | |
4120 | as_bad_where (fixP->fx_file, fixP->fx_line, | |
4121 | _("Can't emit reloc {- %s-seg symbol \"%s\"} @ file address %ld."), | |
4122 | segment_name (S_GET_SEGMENT (sub_symbolP)), | |
4123 | S_GET_NAME (sub_symbolP), | |
4124 | (long) (fragP->fr_address + where)); | |
4125 | } /* if absolute */ | |
4126 | } | |
4127 | } /* if sub_symbolP */ | |
4128 | ||
4129 | if (add_symbolP) | |
4130 | { | |
4131 | if (add_symbol_segment == this_segment_type && pcrel) | |
4132 | { | |
4133 | /* | |
4134 | * This fixup was made when the symbol's segment was | |
4135 | * SEG_UNKNOWN, but it is now in the local segment. | |
4136 | * So we know how to do the address without relocation. | |
4137 | */ | |
4138 | #ifdef TC_I960 | |
4139 | /* reloc_callj() may replace a 'call' with a 'calls' or a 'bal', | |
4140 | * in which cases it modifies *fixP as appropriate. In the case | |
4141 | * of a 'calls', no further work is required, and *fixP has been | |
4142 | * set up to make the rest of the code below a no-op. | |
4143 | */ | |
4144 | reloc_callj (fixP); | |
4145 | #endif /* TC_I960 */ | |
4146 | ||
4147 | add_number += S_GET_VALUE (add_symbolP); | |
4148 | add_number -= md_pcrel_from (fixP); | |
4149 | ||
4150 | /* We used to do | |
4151 | add_number -= segP->scnhdr.s_vaddr; | |
4152 | if defined (TC_I386) || defined (TE_LYNX). I now | |
4153 | think that was an error propagated from the case when | |
4154 | we are going to emit the relocation. If we are not | |
4155 | going to emit the relocation, then we just want to | |
4156 | set add_number to the difference between the symbols. | |
4157 | This is a case that would only arise when there is a | |
4158 | PC relative reference from a section other than .text | |
4159 | to a symbol defined in the same section, and the | |
4160 | reference is not relaxed. Since jump instructions on | |
4161 | the i386 are relaxed, this could only arise with a | |
4162 | call instruction. */ | |
4163 | ||
4164 | pcrel = 0; /* Lie. Don't want further pcrel processing. */ | |
4165 | if (!TC_FORCE_RELOCATION (fixP)) | |
4166 | { | |
4167 | fixP->fx_addsy = NULL; | |
4168 | fixP->fx_done = 1; | |
4169 | } | |
4170 | } | |
4171 | else | |
4172 | { | |
4173 | switch (add_symbol_segment) | |
4174 | { | |
4175 | case absolute_section: | |
4176 | #ifdef TC_I960 | |
4177 | reloc_callj (fixP); /* See comment about reloc_callj() above*/ | |
4178 | #endif /* TC_I960 */ | |
4179 | add_number += S_GET_VALUE (add_symbolP); | |
4180 | add_symbolP = NULL; | |
4181 | ||
4182 | if (!TC_FORCE_RELOCATION (fixP)) | |
4183 | { | |
4184 | fixP->fx_addsy = NULL; | |
4185 | fixP->fx_done = 1; | |
4186 | } | |
4187 | break; | |
4188 | default: | |
4189 | ||
4190 | ||
4191 | #if defined(TC_A29K) || (defined(TE_PE) && defined(TC_I386)) || defined(TC_M88K) | |
4192 | /* This really should be handled in the linker, but | |
4193 | backward compatibility forbids. */ | |
4194 | add_number += S_GET_VALUE (add_symbolP); | |
4195 | #else | |
4196 | add_number += S_GET_VALUE (add_symbolP) + | |
4197 | segment_info[S_GET_SEGMENT (add_symbolP)].scnhdr.s_paddr; | |
4198 | #endif | |
4199 | break; | |
4200 | ||
4201 | case SEG_UNKNOWN: | |
4202 | #ifdef TC_I960 | |
4203 | if ((int) fixP->fx_bit_fixP == 13) | |
4204 | { | |
4205 | /* This is a COBR instruction. They have only a | |
4206 | * 13-bit displacement and are only to be used | |
4207 | * for local branches: flag as error, don't generate | |
4208 | * relocation. | |
4209 | */ | |
4210 | as_bad_where (fixP->fx_file, fixP->fx_line, | |
4211 | _("can't use COBR format with external label")); | |
4212 | fixP->fx_addsy = NULL; | |
4213 | fixP->fx_done = 1; | |
4214 | continue; | |
4215 | } /* COBR */ | |
4216 | #endif /* TC_I960 */ | |
4217 | #if ((defined (TC_I386) || defined (TE_LYNX) || defined (TE_AUX)) && !defined(TE_PE)) || defined (COFF_COMMON_ADDEND) | |
4218 | /* 386 COFF uses a peculiar format in which the | |
4219 | value of a common symbol is stored in the .text | |
4220 | segment (I've checked this on SVR3.2 and SCO | |
4221 | 3.2.2) Ian Taylor <ian@cygnus.com>. */ | |
4222 | /* This is also true for 68k COFF on sysv machines | |
4223 | (Checked on Motorola sysv68 R3V6 and R3V7.1, and also on | |
4224 | UNIX System V/M68000, Release 1.0 from ATT/Bell Labs) | |
4225 | Philippe De Muyter <phdm@info.ucl.ac.be>. */ | |
4226 | if (S_IS_COMMON (add_symbolP)) | |
4227 | add_number += S_GET_VALUE (add_symbolP); | |
4228 | #endif | |
4229 | break; | |
4230 | ||
4231 | ||
4232 | } /* switch on symbol seg */ | |
4233 | } /* if not in local seg */ | |
4234 | } /* if there was a + symbol */ | |
4235 | ||
4236 | if (pcrel) | |
4237 | { | |
4238 | #if !defined(TC_M88K) && !(defined(TE_PE) && defined(TC_I386)) && !defined(TC_A29K) | |
4239 | /* This adjustment is not correct on the m88k, for which the | |
4240 | linker does all the computation. */ | |
4241 | add_number -= md_pcrel_from (fixP); | |
4242 | #endif | |
4243 | if (add_symbolP == 0) | |
4244 | { | |
4245 | fixP->fx_addsy = &abs_symbol; | |
4246 | } /* if there's an add_symbol */ | |
4247 | #if defined (TC_I386) || defined (TE_LYNX) || defined (TC_I960) || defined (TC_M68K) | |
4248 | /* On the 386 we must adjust by the segment vaddr as well. | |
4249 | Ian Taylor. | |
4250 | ||
4251 | I changed the i960 to work this way as well. This is | |
4252 | compatible with the current GNU linker behaviour. I do | |
4253 | not know what other i960 COFF assemblers do. This is not | |
4254 | a common case: normally, only assembler code will contain | |
4255 | a PC relative reloc, and only branches which do not | |
4256 | originate in the .text section will have a non-zero | |
4257 | address. | |
4258 | ||
4259 | I changed the m68k to work this way as well. This will | |
4260 | break existing PC relative relocs from sections which do | |
4261 | not start at address 0, but it will make ld -r work. | |
4262 | Ian Taylor, 4 Oct 96. */ | |
4263 | ||
4264 | add_number -= segP->scnhdr.s_vaddr; | |
4265 | #endif | |
4266 | } /* if pcrel */ | |
4267 | ||
ec0f0840 AM |
4268 | #ifdef MD_APPLY_FIX3 |
4269 | md_apply_fix3 (fixP, (valueT *) &add_number, this_segment_type); | |
4270 | #else | |
4271 | md_apply_fix (fixP, add_number); | |
4272 | #endif | |
4273 | ||
252b5132 RH |
4274 | if (!fixP->fx_bit_fixP && ! fixP->fx_no_overflow) |
4275 | { | |
4276 | #ifndef TC_M88K | |
4277 | /* The m88k uses the offset field of the reloc to get around | |
4278 | this problem. */ | |
4279 | if ((size == 1 | |
4280 | && ((add_number & ~0xFF) | |
4281 | || (fixP->fx_signed && (add_number & 0x80))) | |
4282 | && ((add_number & ~0xFF) != (-1 & ~0xFF) | |
4283 | || (add_number & 0x80) == 0)) | |
4284 | || (size == 2 | |
4285 | && ((add_number & ~0xFFFF) | |
4286 | || (fixP->fx_signed && (add_number & 0x8000))) | |
4287 | && ((add_number & ~0xFFFF) != (-1 & ~0xFFFF) | |
4288 | || (add_number & 0x8000) == 0))) | |
4289 | { | |
4290 | as_bad_where (fixP->fx_file, fixP->fx_line, | |
4291 | _("Value of %ld too large for field of %d bytes at 0x%lx"), | |
4292 | (long) add_number, size, | |
4293 | (unsigned long) (fragP->fr_address + where)); | |
4294 | } | |
4295 | #endif | |
4296 | #ifdef WARN_SIGNED_OVERFLOW_WORD | |
4297 | /* Warn if a .word value is too large when treated as a | |
4298 | signed number. We already know it is not too negative. | |
4299 | This is to catch over-large switches generated by gcc on | |
4300 | the 68k. */ | |
4301 | if (!flag_signed_overflow_ok | |
4302 | && size == 2 | |
4303 | && add_number > 0x7fff) | |
4304 | as_bad_where (fixP->fx_file, fixP->fx_line, | |
4305 | _("Signed .word overflow; switch may be too large; %ld at 0x%lx"), | |
4306 | (long) add_number, | |
4307 | (unsigned long) (fragP->fr_address + where)); | |
4308 | #endif | |
4309 | } /* not a bit fix */ | |
252b5132 RH |
4310 | } /* For each fixS in this segment. */ |
4311 | } /* fixup_segment() */ | |
4312 | ||
4313 | #endif | |
4314 | ||
4315 | /* The first entry in a .stab section is special. */ | |
4316 | ||
4317 | void | |
4318 | obj_coff_init_stab_section (seg) | |
4319 | segT seg; | |
4320 | { | |
4321 | char *file; | |
4322 | char *p; | |
4323 | char *stabstr_name; | |
4324 | unsigned int stroff; | |
4325 | ||
4326 | /* Make space for this first symbol. */ | |
4327 | p = frag_more (12); | |
4328 | /* Zero it out. */ | |
4329 | memset (p, 0, 12); | |
4330 | as_where (&file, (unsigned int *) NULL); | |
4331 | stabstr_name = (char *) alloca (strlen (segment_info[seg].name) + 4); | |
4332 | strcpy (stabstr_name, segment_info[seg].name); | |
4333 | strcat (stabstr_name, "str"); | |
4334 | stroff = get_stab_string_offset (file, stabstr_name); | |
4335 | know (stroff == 1); | |
4336 | md_number_to_chars (p, stroff, 4); | |
4337 | } | |
4338 | ||
4339 | /* Fill in the counts in the first entry in a .stab section. */ | |
4340 | ||
4341 | static void | |
4342 | adjust_stab_section(abfd, seg) | |
4343 | bfd *abfd; | |
4344 | segT seg; | |
4345 | { | |
4346 | segT stabstrseg = SEG_UNKNOWN; | |
4347 | const char *secname, *name2; | |
4348 | char *name; | |
4349 | char *p = NULL; | |
4350 | int i, strsz = 0, nsyms; | |
4351 | fragS *frag = segment_info[seg].frchainP->frch_root; | |
4352 | ||
4353 | /* Look for the associated string table section. */ | |
4354 | ||
4355 | secname = segment_info[seg].name; | |
4356 | name = (char *) alloca (strlen (secname) + 4); | |
4357 | strcpy (name, secname); | |
4358 | strcat (name, "str"); | |
4359 | ||
4360 | for (i = SEG_E0; i < SEG_UNKNOWN; i++) | |
4361 | { | |
4362 | name2 = segment_info[i].name; | |
4363 | if (name2 != NULL && strncmp(name2, name, 8) == 0) | |
4364 | { | |
4365 | stabstrseg = i; | |
4366 | break; | |
4367 | } | |
4368 | } | |
4369 | ||
4370 | /* If we found the section, get its size. */ | |
4371 | if (stabstrseg != SEG_UNKNOWN) | |
4372 | strsz = size_section (abfd, stabstrseg); | |
4373 | ||
4374 | nsyms = size_section (abfd, seg) / 12 - 1; | |
4375 | ||
4376 | /* Look for the first frag of sufficient size for the initial stab | |
4377 | symbol, and collect a pointer to it. */ | |
4378 | while (frag && frag->fr_fix < 12) | |
4379 | frag = frag->fr_next; | |
4380 | assert (frag != 0); | |
4381 | p = frag->fr_literal; | |
4382 | assert (p != 0); | |
4383 | ||
4384 | /* Write in the number of stab symbols and the size of the string | |
4385 | table. */ | |
4386 | bfd_h_put_16 (abfd, (bfd_vma) nsyms, (bfd_byte *) p + 6); | |
4387 | bfd_h_put_32 (abfd, (bfd_vma) strsz, (bfd_byte *) p + 8); | |
4388 | } | |
4389 | ||
4390 | #endif /* not BFD_ASSEMBLER */ | |
4391 | ||
4392 | const pseudo_typeS obj_pseudo_table[] = | |
4393 | { | |
4394 | {"def", obj_coff_def, 0}, | |
4395 | {"dim", obj_coff_dim, 0}, | |
4396 | {"endef", obj_coff_endef, 0}, | |
4397 | {"line", obj_coff_line, 0}, | |
4398 | {"ln", obj_coff_ln, 0}, | |
4399 | {"appline", obj_coff_ln, 1}, | |
4400 | {"scl", obj_coff_scl, 0}, | |
4401 | {"size", obj_coff_size, 0}, | |
4402 | {"tag", obj_coff_tag, 0}, | |
4403 | {"type", obj_coff_type, 0}, | |
4404 | {"val", obj_coff_val, 0}, | |
4405 | {"section", obj_coff_section, 0}, | |
4406 | {"sect", obj_coff_section, 0}, | |
4407 | /* FIXME: We ignore the MRI short attribute. */ | |
4408 | {"section.s", obj_coff_section, 0}, | |
4409 | {"sect.s", obj_coff_section, 0}, | |
4410 | /* We accept the .bss directive for backward compatibility with | |
4411 | earlier versions of gas. */ | |
4412 | {"bss", obj_coff_bss, 0}, | |
4413 | {"weak", obj_coff_weak, 0}, | |
4414 | #ifndef BFD_ASSEMBLER | |
4415 | {"use", obj_coff_section, 0}, | |
4416 | {"text", obj_coff_text, 0}, | |
4417 | {"data", obj_coff_data, 0}, | |
4418 | {"lcomm", obj_coff_lcomm, 0}, | |
4419 | {"ident", obj_coff_ident, 0}, | |
4420 | #else | |
4421 | {"optim", s_ignore, 0}, /* For sun386i cc (?) */ | |
4422 | {"ident", s_ignore, 0}, /* we don't yet handle this. */ | |
4423 | #endif | |
4424 | {"version", s_ignore, 0}, | |
4425 | {"ABORT", s_abort, 0}, | |
4426 | #ifdef TC_M88K | |
4427 | /* The m88k uses sdef instead of def. */ | |
4428 | {"sdef", obj_coff_def, 0}, | |
4429 | #endif | |
4430 | {NULL} /* end sentinel */ | |
4431 | }; /* obj_pseudo_table */ | |
4432 | \f | |
4433 | #ifdef BFD_ASSEMBLER | |
4434 | ||
4435 | /* Support for a COFF emulation. */ | |
4436 | ||
4437 | static void | |
4438 | coff_pop_insert () | |
4439 | { | |
4440 | pop_insert (obj_pseudo_table); | |
4441 | } | |
4442 | ||
4443 | static int | |
4444 | coff_sec_sym_ok_for_reloc (sec) | |
4445 | asection *sec; | |
4446 | { | |
4447 | return 0; | |
4448 | } | |
4449 | ||
4450 | static void | |
4451 | no_func () | |
4452 | { | |
4453 | abort (); | |
4454 | } | |
4455 | ||
4456 | const struct format_ops coff_format_ops = | |
4457 | { | |
4458 | bfd_target_coff_flavour, | |
4459 | 0, | |
4460 | 1, | |
4461 | coff_frob_symbol, | |
4462 | no_func, | |
4463 | coff_frob_file_after_relocs, | |
4464 | 0, 0, | |
4465 | 0, 0, | |
4466 | 0, | |
4467 | #if 0 | |
4468 | obj_generate_asm_lineno, | |
4469 | #else | |
4470 | no_func, | |
4471 | #endif | |
4472 | #if 0 | |
4473 | obj_stab, | |
4474 | #else | |
4475 | no_func, | |
4476 | #endif | |
4477 | coff_sec_sym_ok_for_reloc, | |
4478 | coff_pop_insert, | |
4479 | #if 0 | |
4480 | obj_set_ext, | |
4481 | #else | |
4482 | no_func, | |
4483 | #endif | |
4484 | coff_obj_read_begin_hook, | |
4485 | coff_obj_symbol_new_hook, | |
4486 | }; | |
4487 | ||
4488 | #endif |