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1 | /* coff object file format | |
2 | Copyright (C) 1989-2021 Free Software Foundation, Inc. | |
3 | ||
4 | This file is part of GAS. | |
5 | ||
6 | GAS is free software; you can redistribute it and/or modify | |
7 | it under the terms of the GNU General Public License as published by | |
8 | the Free Software Foundation; either version 3, or (at your option) | |
9 | any later version. | |
10 | ||
11 | GAS is distributed in the hope that it will be useful, | |
12 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | GNU General Public License for more details. | |
15 | ||
16 | You should have received a copy of the GNU General Public License | |
17 | along with GAS; see the file COPYING. If not, write to the Free | |
18 | Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA | |
19 | 02110-1301, USA. */ | |
20 | ||
21 | #define OBJ_HEADER "obj-coff.h" | |
22 | ||
23 | #include "as.h" | |
24 | #include "safe-ctype.h" | |
25 | #include "subsegs.h" | |
26 | ||
27 | #ifdef TE_PE | |
28 | #include "coff/pe.h" | |
29 | #endif | |
30 | ||
31 | #ifdef OBJ_XCOFF | |
32 | #include "coff/xcoff.h" | |
33 | #endif | |
34 | ||
35 | #define streq(a,b) (strcmp ((a), (b)) == 0) | |
36 | #define strneq(a,b,n) (strncmp ((a), (b), (n)) == 0) | |
37 | ||
38 | /* I think this is probably always correct. */ | |
39 | #ifndef KEEP_RELOC_INFO | |
40 | #define KEEP_RELOC_INFO | |
41 | #endif | |
42 | ||
43 | /* obj_coff_section will use this macro to set a new section's | |
44 | attributes when a directive has no valid flags or the "w" flag is | |
45 | used. This default should be appropriate for most. */ | |
46 | #ifndef TC_COFF_SECTION_DEFAULT_ATTRIBUTES | |
47 | #define TC_COFF_SECTION_DEFAULT_ATTRIBUTES (SEC_LOAD | SEC_DATA) | |
48 | #endif | |
49 | ||
50 | /* This is used to hold the symbol built by a sequence of pseudo-ops | |
51 | from .def and .endef. */ | |
52 | static symbolS *def_symbol_in_progress; | |
53 | #ifdef TE_PE | |
54 | /* PE weak alternate symbols begin with this string. */ | |
55 | static const char weak_altprefix[] = ".weak."; | |
56 | #endif /* TE_PE */ | |
57 | ||
58 | #include "obj-coff-seh.c" | |
59 | ||
60 | typedef struct | |
61 | { | |
62 | unsigned long chunk_size; | |
63 | unsigned long element_size; | |
64 | unsigned long size; | |
65 | char *data; | |
66 | unsigned long pointer; | |
67 | } | |
68 | stack; | |
69 | ||
70 | \f | |
71 | /* Stack stuff. */ | |
72 | ||
73 | static stack * | |
74 | stack_init (unsigned long chunk_size, | |
75 | unsigned long element_size) | |
76 | { | |
77 | stack *st; | |
78 | ||
79 | st = XNEW (stack); | |
80 | st->data = XNEWVEC (char, chunk_size); | |
81 | if (!st->data) | |
82 | { | |
83 | free (st); | |
84 | return NULL; | |
85 | } | |
86 | st->pointer = 0; | |
87 | st->size = chunk_size; | |
88 | st->chunk_size = chunk_size; | |
89 | st->element_size = element_size; | |
90 | return st; | |
91 | } | |
92 | ||
93 | static char * | |
94 | stack_push (stack *st, char *element) | |
95 | { | |
96 | if (st->pointer + st->element_size >= st->size) | |
97 | { | |
98 | st->size += st->chunk_size; | |
99 | st->data = XRESIZEVEC (char, st->data, st->size); | |
100 | } | |
101 | memcpy (st->data + st->pointer, element, st->element_size); | |
102 | st->pointer += st->element_size; | |
103 | return st->data + st->pointer; | |
104 | } | |
105 | ||
106 | static char * | |
107 | stack_pop (stack *st) | |
108 | { | |
109 | if (st->pointer < st->element_size) | |
110 | { | |
111 | st->pointer = 0; | |
112 | return NULL; | |
113 | } | |
114 | st->pointer -= st->element_size; | |
115 | return st->data + st->pointer; | |
116 | } | |
117 | \f | |
118 | /* Maintain a list of the tagnames of the structures. */ | |
119 | ||
120 | static htab_t tag_hash; | |
121 | ||
122 | static void | |
123 | tag_init (void) | |
124 | { | |
125 | tag_hash = str_htab_create (); | |
126 | } | |
127 | ||
128 | static void | |
129 | tag_insert (const char *name, symbolS *symbolP) | |
130 | { | |
131 | str_hash_insert (tag_hash, name, symbolP, 1); | |
132 | } | |
133 | ||
134 | static symbolS * | |
135 | tag_find (char *name) | |
136 | { | |
137 | return (symbolS *) str_hash_find (tag_hash, name); | |
138 | } | |
139 | ||
140 | static symbolS * | |
141 | tag_find_or_make (char *name) | |
142 | { | |
143 | symbolS *symbolP; | |
144 | ||
145 | if ((symbolP = tag_find (name)) == NULL) | |
146 | { | |
147 | symbolP = symbol_new (name, undefined_section, &zero_address_frag, 0); | |
148 | ||
149 | tag_insert (S_GET_NAME (symbolP), symbolP); | |
150 | symbol_table_insert (symbolP); | |
151 | } | |
152 | ||
153 | return symbolP; | |
154 | } | |
155 | ||
156 | /* We accept the .bss directive to set the section for backward | |
157 | compatibility with earlier versions of gas. */ | |
158 | ||
159 | static void | |
160 | obj_coff_bss (int ignore ATTRIBUTE_UNUSED) | |
161 | { | |
162 | if (*input_line_pointer == '\n') | |
163 | subseg_new (".bss", get_absolute_expression ()); | |
164 | else | |
165 | s_lcomm (0); | |
166 | } | |
167 | ||
168 | #ifdef TE_PE | |
169 | /* Called from read.c:s_comm after we've parsed .comm symbol, size. | |
170 | Parse a possible alignment value. */ | |
171 | ||
172 | static symbolS * | |
173 | obj_coff_common_parse (int ignore ATTRIBUTE_UNUSED, symbolS *symbolP, addressT size) | |
174 | { | |
175 | addressT align = 0; | |
176 | ||
177 | if (*input_line_pointer == ',') | |
178 | { | |
179 | align = parse_align (0); | |
180 | if (align == (addressT) -1) | |
181 | return NULL; | |
182 | } | |
183 | ||
184 | S_SET_VALUE (symbolP, size); | |
185 | S_SET_EXTERNAL (symbolP); | |
186 | S_SET_SEGMENT (symbolP, bfd_com_section_ptr); | |
187 | ||
188 | symbol_get_bfdsym (symbolP)->flags |= BSF_OBJECT; | |
189 | ||
190 | /* There is no S_SET_ALIGN (symbolP, align) in COFF/PE. | |
191 | Instead we must add a note to the .drectve section. */ | |
192 | if (align) | |
193 | { | |
194 | segT current_seg = now_seg; | |
195 | subsegT current_subseg = now_subseg; | |
196 | flagword oldflags; | |
197 | asection *sec; | |
198 | size_t pfxlen, numlen; | |
199 | char *frag; | |
200 | char numbuff[20]; | |
201 | ||
202 | sec = subseg_new (".drectve", 0); | |
203 | oldflags = bfd_section_flags (sec); | |
204 | if (oldflags == SEC_NO_FLAGS) | |
205 | { | |
206 | if (!bfd_set_section_flags (sec, TC_COFF_SECTION_DEFAULT_ATTRIBUTES)) | |
207 | as_warn (_("error setting flags for \"%s\": %s"), | |
208 | bfd_section_name (sec), | |
209 | bfd_errmsg (bfd_get_error ())); | |
210 | } | |
211 | ||
212 | /* Emit a string. Note no NUL-termination. */ | |
213 | pfxlen = strlen (" -aligncomm:") + 2 + strlen (S_GET_NAME (symbolP)) + 1; | |
214 | numlen = snprintf (numbuff, sizeof (numbuff), "%d", (int) align); | |
215 | frag = frag_more (pfxlen + numlen); | |
216 | (void) sprintf (frag, " -aligncomm:\"%s\",", S_GET_NAME (symbolP)); | |
217 | memcpy (frag + pfxlen, numbuff, numlen); | |
218 | /* Restore original subseg. */ | |
219 | subseg_set (current_seg, current_subseg); | |
220 | } | |
221 | ||
222 | return symbolP; | |
223 | } | |
224 | ||
225 | static void | |
226 | obj_coff_comm (int ignore ATTRIBUTE_UNUSED) | |
227 | { | |
228 | s_comm_internal (ignore, obj_coff_common_parse); | |
229 | } | |
230 | #endif /* TE_PE */ | |
231 | ||
232 | /* @@ Ick. */ | |
233 | static segT | |
234 | fetch_coff_debug_section (void) | |
235 | { | |
236 | static segT debug_section; | |
237 | ||
238 | if (!debug_section) | |
239 | { | |
240 | const asymbol *s; | |
241 | ||
242 | s = bfd_make_debug_symbol (stdoutput, NULL, 0); | |
243 | gas_assert (s != 0); | |
244 | debug_section = s->section; | |
245 | } | |
246 | return debug_section; | |
247 | } | |
248 | ||
249 | void | |
250 | SA_SET_SYM_ENDNDX (symbolS *sym, symbolS *val) | |
251 | { | |
252 | combined_entry_type *entry, *p; | |
253 | ||
254 | entry = &coffsymbol (symbol_get_bfdsym (sym))->native[1]; | |
255 | p = coffsymbol (symbol_get_bfdsym (val))->native; | |
256 | entry->u.auxent.x_sym.x_fcnary.x_fcn.x_endndx.p = p; | |
257 | entry->fix_end = 1; | |
258 | } | |
259 | ||
260 | static void | |
261 | SA_SET_SYM_TAGNDX (symbolS *sym, symbolS *val) | |
262 | { | |
263 | combined_entry_type *entry, *p; | |
264 | ||
265 | entry = &coffsymbol (symbol_get_bfdsym (sym))->native[1]; | |
266 | p = coffsymbol (symbol_get_bfdsym (val))->native; | |
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 (symbolS *sym) | |
273 | { | |
274 | return coffsymbol (symbol_get_bfdsym (sym))->native->u.syment.n_type; | |
275 | } | |
276 | ||
277 | int | |
278 | S_SET_DATA_TYPE (symbolS *sym, int val) | |
279 | { | |
280 | coffsymbol (symbol_get_bfdsym (sym))->native->u.syment.n_type = val; | |
281 | return val; | |
282 | } | |
283 | ||
284 | int | |
285 | S_GET_STORAGE_CLASS (symbolS *sym) | |
286 | { | |
287 | return coffsymbol (symbol_get_bfdsym (sym))->native->u.syment.n_sclass; | |
288 | } | |
289 | ||
290 | int | |
291 | S_SET_STORAGE_CLASS (symbolS *sym, int val) | |
292 | { | |
293 | coffsymbol (symbol_get_bfdsym (sym))->native->u.syment.n_sclass = val; | |
294 | return val; | |
295 | } | |
296 | ||
297 | /* Merge a debug symbol containing debug information into a normal symbol. */ | |
298 | ||
299 | static void | |
300 | c_symbol_merge (symbolS *debug, symbolS *normal) | |
301 | { | |
302 | S_SET_DATA_TYPE (normal, S_GET_DATA_TYPE (debug)); | |
303 | S_SET_STORAGE_CLASS (normal, S_GET_STORAGE_CLASS (debug)); | |
304 | ||
305 | if (S_GET_NUMBER_AUXILIARY (debug) > S_GET_NUMBER_AUXILIARY (normal)) | |
306 | /* Take the most we have. */ | |
307 | S_SET_NUMBER_AUXILIARY (normal, S_GET_NUMBER_AUXILIARY (debug)); | |
308 | ||
309 | if (S_GET_NUMBER_AUXILIARY (debug) > 0) | |
310 | /* Move all the auxiliary information. */ | |
311 | memcpy (SYM_AUXINFO (normal), SYM_AUXINFO (debug), | |
312 | (S_GET_NUMBER_AUXILIARY (debug) | |
313 | * sizeof (*SYM_AUXINFO (debug)))); | |
314 | ||
315 | /* Move the debug flags. */ | |
316 | SF_SET_DEBUG_FIELD (normal, SF_GET_DEBUG_FIELD (debug)); | |
317 | } | |
318 | ||
319 | void | |
320 | c_dot_file_symbol (const char *filename, int appfile ATTRIBUTE_UNUSED) | |
321 | { | |
322 | symbolS *symbolP; | |
323 | ||
324 | /* BFD converts filename to a .file symbol with an aux entry. It | |
325 | also handles chaining. */ | |
326 | symbolP = symbol_new (filename, bfd_abs_section_ptr, &zero_address_frag, 0); | |
327 | ||
328 | S_SET_STORAGE_CLASS (symbolP, C_FILE); | |
329 | S_SET_NUMBER_AUXILIARY (symbolP, 1); | |
330 | ||
331 | symbol_get_bfdsym (symbolP)->flags = BSF_DEBUGGING; | |
332 | ||
333 | #ifndef NO_LISTING | |
334 | { | |
335 | extern int listing; | |
336 | ||
337 | if (listing) | |
338 | listing_source_file (filename); | |
339 | } | |
340 | #endif | |
341 | ||
342 | /* Make sure that the symbol is first on the symbol chain. */ | |
343 | if (symbol_rootP != symbolP) | |
344 | { | |
345 | symbol_remove (symbolP, &symbol_rootP, &symbol_lastP); | |
346 | symbol_insert (symbolP, symbol_rootP, &symbol_rootP, &symbol_lastP); | |
347 | } | |
348 | } | |
349 | ||
350 | /* Line number handling. */ | |
351 | ||
352 | struct line_no | |
353 | { | |
354 | struct line_no *next; | |
355 | fragS *frag; | |
356 | alent l; | |
357 | }; | |
358 | ||
359 | int coff_line_base; | |
360 | ||
361 | /* Symbol of last function, which we should hang line#s off of. */ | |
362 | static symbolS *line_fsym; | |
363 | ||
364 | #define in_function() (line_fsym != 0) | |
365 | #define clear_function() (line_fsym = 0) | |
366 | #define set_function(F) (line_fsym = (F), coff_add_linesym (F)) | |
367 | ||
368 | \f | |
369 | void | |
370 | coff_obj_symbol_new_hook (symbolS *symbolP) | |
371 | { | |
372 | long sz = (OBJ_COFF_MAX_AUXENTRIES + 1) * sizeof (combined_entry_type); | |
373 | char * s = XNEWVEC (char, sz); | |
374 | ||
375 | memset (s, 0, sz); | |
376 | coffsymbol (symbol_get_bfdsym (symbolP))->native = (combined_entry_type *) s; | |
377 | coffsymbol (symbol_get_bfdsym (symbolP))->native->is_sym = TRUE; | |
378 | ||
379 | S_SET_DATA_TYPE (symbolP, T_NULL); | |
380 | S_SET_STORAGE_CLASS (symbolP, 0); | |
381 | S_SET_NUMBER_AUXILIARY (symbolP, 0); | |
382 | ||
383 | if (S_IS_STRING (symbolP)) | |
384 | SF_SET_STRING (symbolP); | |
385 | ||
386 | if (S_IS_LOCAL (symbolP)) | |
387 | SF_SET_LOCAL (symbolP); | |
388 | } | |
389 | ||
390 | void | |
391 | coff_obj_symbol_clone_hook (symbolS *newsymP, symbolS *orgsymP) | |
392 | { | |
393 | long elts = OBJ_COFF_MAX_AUXENTRIES + 1; | |
394 | combined_entry_type * s = XNEWVEC (combined_entry_type, elts); | |
395 | ||
396 | memcpy (s, coffsymbol (symbol_get_bfdsym (orgsymP))->native, | |
397 | elts * sizeof (combined_entry_type)); | |
398 | coffsymbol (symbol_get_bfdsym (newsymP))->native = s; | |
399 | ||
400 | SF_SET (newsymP, SF_GET (orgsymP)); | |
401 | } | |
402 | ||
403 | \f | |
404 | /* Handle .ln directives. */ | |
405 | ||
406 | static symbolS *current_lineno_sym; | |
407 | static struct line_no *line_nos; | |
408 | /* FIXME: Blindly assume all .ln directives will be in the .text section. */ | |
409 | int coff_n_line_nos; | |
410 | ||
411 | static void | |
412 | add_lineno (fragS * frag, addressT offset, int num) | |
413 | { | |
414 | struct line_no * new_line = XNEW (struct line_no); | |
415 | ||
416 | if (!current_lineno_sym) | |
417 | abort (); | |
418 | ||
419 | #ifndef OBJ_XCOFF | |
420 | /* The native aix assembler accepts negative line number. */ | |
421 | ||
422 | if (num <= 0) | |
423 | { | |
424 | /* Zero is used as an end marker in the file. */ | |
425 | as_warn (_("Line numbers must be positive integers\n")); | |
426 | num = 1; | |
427 | } | |
428 | #endif /* OBJ_XCOFF */ | |
429 | new_line->next = line_nos; | |
430 | new_line->frag = frag; | |
431 | new_line->l.line_number = num; | |
432 | new_line->l.u.offset = offset; | |
433 | line_nos = new_line; | |
434 | coff_n_line_nos++; | |
435 | } | |
436 | ||
437 | void | |
438 | coff_add_linesym (symbolS *sym) | |
439 | { | |
440 | if (line_nos) | |
441 | { | |
442 | coffsymbol (symbol_get_bfdsym (current_lineno_sym))->lineno = | |
443 | (alent *) line_nos; | |
444 | coff_n_line_nos++; | |
445 | line_nos = 0; | |
446 | } | |
447 | current_lineno_sym = sym; | |
448 | } | |
449 | ||
450 | static void | |
451 | obj_coff_ln (int appline) | |
452 | { | |
453 | int l; | |
454 | ||
455 | if (! appline && def_symbol_in_progress != NULL) | |
456 | { | |
457 | as_warn (_(".ln pseudo-op inside .def/.endef: ignored.")); | |
458 | demand_empty_rest_of_line (); | |
459 | return; | |
460 | } | |
461 | ||
462 | l = get_absolute_expression (); | |
463 | ||
464 | /* If there is no lineno symbol, treat a .ln | |
465 | directive as if it were a .appline directive. */ | |
466 | if (appline || current_lineno_sym == NULL) | |
467 | new_logical_line ((char *) NULL, l - 1); | |
468 | else | |
469 | add_lineno (frag_now, frag_now_fix (), l); | |
470 | ||
471 | #ifndef NO_LISTING | |
472 | { | |
473 | extern int listing; | |
474 | ||
475 | if (listing) | |
476 | { | |
477 | if (! appline) | |
478 | l += coff_line_base - 1; | |
479 | listing_source_line (l); | |
480 | } | |
481 | } | |
482 | #endif | |
483 | ||
484 | demand_empty_rest_of_line (); | |
485 | } | |
486 | ||
487 | /* .loc is essentially the same as .ln; parse it for assembler | |
488 | compatibility. */ | |
489 | ||
490 | static void | |
491 | obj_coff_loc (int ignore ATTRIBUTE_UNUSED) | |
492 | { | |
493 | int lineno; | |
494 | ||
495 | /* FIXME: Why do we need this check? We need it for ECOFF, but why | |
496 | do we need it for COFF? */ | |
497 | if (now_seg != text_section) | |
498 | { | |
499 | as_warn (_(".loc outside of .text")); | |
500 | demand_empty_rest_of_line (); | |
501 | return; | |
502 | } | |
503 | ||
504 | if (def_symbol_in_progress != NULL) | |
505 | { | |
506 | as_warn (_(".loc pseudo-op inside .def/.endef: ignored.")); | |
507 | demand_empty_rest_of_line (); | |
508 | return; | |
509 | } | |
510 | ||
511 | /* Skip the file number. */ | |
512 | SKIP_WHITESPACE (); | |
513 | get_absolute_expression (); | |
514 | SKIP_WHITESPACE (); | |
515 | ||
516 | lineno = get_absolute_expression (); | |
517 | ||
518 | #ifndef NO_LISTING | |
519 | { | |
520 | extern int listing; | |
521 | ||
522 | if (listing) | |
523 | { | |
524 | lineno += coff_line_base - 1; | |
525 | listing_source_line (lineno); | |
526 | } | |
527 | } | |
528 | #endif | |
529 | ||
530 | demand_empty_rest_of_line (); | |
531 | ||
532 | add_lineno (frag_now, frag_now_fix (), lineno); | |
533 | } | |
534 | ||
535 | /* Handle the .ident pseudo-op. */ | |
536 | ||
537 | static void | |
538 | obj_coff_ident (int ignore ATTRIBUTE_UNUSED) | |
539 | { | |
540 | segT current_seg = now_seg; | |
541 | subsegT current_subseg = now_subseg; | |
542 | ||
543 | #ifdef TE_PE | |
544 | { | |
545 | segT sec; | |
546 | ||
547 | /* We could put it in .comment, but that creates an extra section | |
548 | that shouldn't be loaded into memory, which requires linker | |
549 | changes... For now, until proven otherwise, use .rdata. */ | |
550 | sec = subseg_new (".rdata$zzz", 0); | |
551 | bfd_set_section_flags (sec, | |
552 | ((SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_DATA) | |
553 | & bfd_applicable_section_flags (stdoutput))); | |
554 | } | |
555 | #else | |
556 | subseg_new (".comment", 0); | |
557 | #endif | |
558 | ||
559 | stringer (8 + 1); | |
560 | subseg_set (current_seg, current_subseg); | |
561 | } | |
562 | ||
563 | /* Handle .def directives. | |
564 | ||
565 | One might ask : why can't we symbol_new if the symbol does not | |
566 | already exist and fill it with debug information. Because of | |
567 | the C_EFCN special symbol. It would clobber the value of the | |
568 | function symbol before we have a chance to notice that it is | |
569 | a C_EFCN. And a second reason is that the code is more clear this | |
570 | way. (at least I think it is :-). */ | |
571 | ||
572 | #define SKIP_SEMI_COLON() while (*input_line_pointer++ != ';') | |
573 | #define SKIP_WHITESPACES() while (*input_line_pointer == ' ' || \ | |
574 | *input_line_pointer == '\t') \ | |
575 | input_line_pointer++; | |
576 | ||
577 | static void | |
578 | obj_coff_def (int what ATTRIBUTE_UNUSED) | |
579 | { | |
580 | char name_end; /* Char after the end of name. */ | |
581 | char *symbol_name; /* Name of the debug symbol. */ | |
582 | char *symbol_name_copy; /* Temporary copy of the name. */ | |
583 | ||
584 | if (def_symbol_in_progress != NULL) | |
585 | { | |
586 | as_warn (_(".def pseudo-op used inside of .def/.endef: ignored.")); | |
587 | demand_empty_rest_of_line (); | |
588 | return; | |
589 | } | |
590 | ||
591 | SKIP_WHITESPACES (); | |
592 | ||
593 | name_end = get_symbol_name (&symbol_name); | |
594 | symbol_name_copy = xstrdup (symbol_name); | |
595 | #ifdef tc_canonicalize_symbol_name | |
596 | symbol_name_copy = tc_canonicalize_symbol_name (symbol_name_copy); | |
597 | #endif | |
598 | ||
599 | /* Initialize the new symbol. */ | |
600 | def_symbol_in_progress = symbol_make (symbol_name_copy); | |
601 | symbol_set_frag (def_symbol_in_progress, &zero_address_frag); | |
602 | S_SET_VALUE (def_symbol_in_progress, 0); | |
603 | ||
604 | if (S_IS_STRING (def_symbol_in_progress)) | |
605 | SF_SET_STRING (def_symbol_in_progress); | |
606 | ||
607 | (void) restore_line_pointer (name_end); | |
608 | ||
609 | demand_empty_rest_of_line (); | |
610 | } | |
611 | ||
612 | static void | |
613 | obj_coff_endef (int ignore ATTRIBUTE_UNUSED) | |
614 | { | |
615 | symbolS *symbolP = NULL; | |
616 | ||
617 | if (def_symbol_in_progress == NULL) | |
618 | { | |
619 | as_warn (_(".endef pseudo-op used outside of .def/.endef: ignored.")); | |
620 | demand_empty_rest_of_line (); | |
621 | return; | |
622 | } | |
623 | ||
624 | /* Set the section number according to storage class. */ | |
625 | switch (S_GET_STORAGE_CLASS (def_symbol_in_progress)) | |
626 | { | |
627 | case C_STRTAG: | |
628 | case C_ENTAG: | |
629 | case C_UNTAG: | |
630 | SF_SET_TAG (def_symbol_in_progress); | |
631 | /* Fall through. */ | |
632 | case C_FILE: | |
633 | case C_TPDEF: | |
634 | SF_SET_DEBUG (def_symbol_in_progress); | |
635 | S_SET_SEGMENT (def_symbol_in_progress, fetch_coff_debug_section ()); | |
636 | break; | |
637 | ||
638 | case C_EFCN: | |
639 | SF_SET_LOCAL (def_symbol_in_progress); /* Do not emit this symbol. */ | |
640 | /* Fall through. */ | |
641 | case C_BLOCK: | |
642 | SF_SET_PROCESS (def_symbol_in_progress); /* Will need processing before writing. */ | |
643 | /* Fall through. */ | |
644 | case C_FCN: | |
645 | { | |
646 | const char *name; | |
647 | ||
648 | S_SET_SEGMENT (def_symbol_in_progress, text_section); | |
649 | ||
650 | name = S_GET_NAME (def_symbol_in_progress); | |
651 | if (name[0] == '.' && name[2] == 'f' && name[3] == '\0') | |
652 | { | |
653 | switch (name[1]) | |
654 | { | |
655 | case 'b': | |
656 | /* .bf */ | |
657 | if (! in_function ()) | |
658 | as_warn (_("`%s' symbol without preceding function"), name); | |
659 | /* Will need relocating. */ | |
660 | SF_SET_PROCESS (def_symbol_in_progress); | |
661 | clear_function (); | |
662 | break; | |
663 | #ifdef TE_PE | |
664 | case 'e': | |
665 | /* .ef */ | |
666 | /* The MS compilers output the actual endline, not the | |
667 | function-relative one... we want to match without | |
668 | changing the assembler input. */ | |
669 | SA_SET_SYM_LNNO (def_symbol_in_progress, | |
670 | (SA_GET_SYM_LNNO (def_symbol_in_progress) | |
671 | + coff_line_base)); | |
672 | break; | |
673 | #endif | |
674 | } | |
675 | } | |
676 | } | |
677 | break; | |
678 | ||
679 | #ifdef C_AUTOARG | |
680 | case C_AUTOARG: | |
681 | #endif /* C_AUTOARG */ | |
682 | case C_AUTO: | |
683 | case C_REG: | |
684 | case C_ARG: | |
685 | case C_REGPARM: | |
686 | case C_FIELD: | |
687 | ||
688 | /* According to the COFF documentation: | |
689 | ||
690 | http://osr5doc.sco.com:1996/topics/COFF_SectNumFld.html | |
691 | ||
692 | A special section number (-2) marks symbolic debugging symbols, | |
693 | including structure/union/enumeration tag names, typedefs, and | |
694 | the name of the file. A section number of -1 indicates that the | |
695 | symbol has a value but is not relocatable. Examples of | |
696 | absolute-valued symbols include automatic and register variables, | |
697 | function arguments, and .eos symbols. | |
698 | ||
699 | But from Ian Lance Taylor: | |
700 | ||
701 | http://sources.redhat.com/ml/binutils/2000-08/msg00202.html | |
702 | ||
703 | the actual tools all marked them as section -1. So the GNU COFF | |
704 | assembler follows historical COFF assemblers. | |
705 | ||
706 | However, it causes problems for djgpp | |
707 | ||
708 | http://sources.redhat.com/ml/binutils/2000-08/msg00210.html | |
709 | ||
710 | By defining STRICTCOFF, a COFF port can make the assembler to | |
711 | follow the documented behavior. */ | |
712 | #ifdef STRICTCOFF | |
713 | case C_MOS: | |
714 | case C_MOE: | |
715 | case C_MOU: | |
716 | case C_EOS: | |
717 | #endif | |
718 | SF_SET_DEBUG (def_symbol_in_progress); | |
719 | S_SET_SEGMENT (def_symbol_in_progress, absolute_section); | |
720 | break; | |
721 | ||
722 | #ifndef STRICTCOFF | |
723 | case C_MOS: | |
724 | case C_MOE: | |
725 | case C_MOU: | |
726 | case C_EOS: | |
727 | S_SET_SEGMENT (def_symbol_in_progress, absolute_section); | |
728 | break; | |
729 | #endif | |
730 | ||
731 | case C_EXT: | |
732 | case C_WEAKEXT: | |
733 | #ifdef TE_PE | |
734 | case C_NT_WEAK: | |
735 | #endif | |
736 | case C_STAT: | |
737 | case C_LABEL: | |
738 | /* Valid but set somewhere else (s_comm, s_lcomm, colon). */ | |
739 | break; | |
740 | ||
741 | default: | |
742 | case C_USTATIC: | |
743 | case C_EXTDEF: | |
744 | case C_ULABEL: | |
745 | as_warn (_("unexpected storage class %d"), | |
746 | S_GET_STORAGE_CLASS (def_symbol_in_progress)); | |
747 | break; | |
748 | } | |
749 | ||
750 | /* Now that we have built a debug symbol, try to find if we should | |
751 | merge with an existing symbol or not. If a symbol is C_EFCN or | |
752 | absolute_section or untagged SEG_DEBUG it never merges. We also | |
753 | don't merge labels, which are in a different namespace, nor | |
754 | symbols which have not yet been defined since they are typically | |
755 | unique, nor do we merge tags with non-tags. */ | |
756 | ||
757 | /* Two cases for functions. Either debug followed by definition or | |
758 | definition followed by debug. For definition first, we will | |
759 | merge the debug symbol into the definition. For debug first, the | |
760 | lineno entry MUST point to the definition function or else it | |
761 | will point off into space when obj_crawl_symbol_chain() merges | |
762 | the debug symbol into the real symbol. Therefor, let's presume | |
763 | the debug symbol is a real function reference. */ | |
764 | ||
765 | /* FIXME-SOON If for some reason the definition label/symbol is | |
766 | never seen, this will probably leave an undefined symbol at link | |
767 | time. */ | |
768 | ||
769 | if (S_GET_STORAGE_CLASS (def_symbol_in_progress) == C_EFCN | |
770 | || S_GET_STORAGE_CLASS (def_symbol_in_progress) == C_LABEL | |
771 | || (streq (bfd_section_name (S_GET_SEGMENT (def_symbol_in_progress)), | |
772 | "*DEBUG*") | |
773 | && !SF_GET_TAG (def_symbol_in_progress)) | |
774 | || S_GET_SEGMENT (def_symbol_in_progress) == absolute_section | |
775 | || ! symbol_constant_p (def_symbol_in_progress) | |
776 | || (symbolP = symbol_find (S_GET_NAME (def_symbol_in_progress))) == NULL | |
777 | || SF_GET_TAG (def_symbol_in_progress) != SF_GET_TAG (symbolP)) | |
778 | { | |
779 | /* If it already is at the end of the symbol list, do nothing */ | |
780 | if (def_symbol_in_progress != symbol_lastP) | |
781 | { | |
782 | symbol_remove (def_symbol_in_progress, &symbol_rootP, &symbol_lastP); | |
783 | symbol_append (def_symbol_in_progress, symbol_lastP, &symbol_rootP, | |
784 | &symbol_lastP); | |
785 | } | |
786 | } | |
787 | else | |
788 | { | |
789 | /* This symbol already exists, merge the newly created symbol | |
790 | into the old one. This is not mandatory. The linker can | |
791 | handle duplicate symbols correctly. But I guess that it save | |
792 | a *lot* of space if the assembly file defines a lot of | |
793 | symbols. [loic] */ | |
794 | ||
795 | /* The debug entry (def_symbol_in_progress) is merged into the | |
796 | previous definition. */ | |
797 | ||
798 | c_symbol_merge (def_symbol_in_progress, symbolP); | |
799 | symbol_remove (def_symbol_in_progress, &symbol_rootP, &symbol_lastP); | |
800 | ||
801 | def_symbol_in_progress = symbolP; | |
802 | ||
803 | if (SF_GET_FUNCTION (def_symbol_in_progress) | |
804 | || SF_GET_TAG (def_symbol_in_progress) | |
805 | || S_GET_STORAGE_CLASS (def_symbol_in_progress) == C_STAT) | |
806 | { | |
807 | /* For functions, and tags, and static symbols, the symbol | |
808 | *must* be where the debug symbol appears. Move the | |
809 | existing symbol to the current place. */ | |
810 | /* If it already is at the end of the symbol list, do nothing. */ | |
811 | if (def_symbol_in_progress != symbol_lastP) | |
812 | { | |
813 | symbol_remove (def_symbol_in_progress, &symbol_rootP, &symbol_lastP); | |
814 | symbol_append (def_symbol_in_progress, symbol_lastP, &symbol_rootP, &symbol_lastP); | |
815 | } | |
816 | } | |
817 | } | |
818 | ||
819 | if (SF_GET_TAG (def_symbol_in_progress)) | |
820 | { | |
821 | symbolS *oldtag; | |
822 | ||
823 | oldtag = symbol_find (S_GET_NAME (def_symbol_in_progress)); | |
824 | if (oldtag == NULL || ! SF_GET_TAG (oldtag)) | |
825 | tag_insert (S_GET_NAME (def_symbol_in_progress), | |
826 | def_symbol_in_progress); | |
827 | } | |
828 | ||
829 | if (SF_GET_FUNCTION (def_symbol_in_progress)) | |
830 | { | |
831 | set_function (def_symbol_in_progress); | |
832 | SF_SET_PROCESS (def_symbol_in_progress); | |
833 | ||
834 | if (symbolP == NULL) | |
835 | /* That is, if this is the first time we've seen the | |
836 | function. */ | |
837 | symbol_table_insert (def_symbol_in_progress); | |
838 | ||
839 | } | |
840 | ||
841 | def_symbol_in_progress = NULL; | |
842 | demand_empty_rest_of_line (); | |
843 | } | |
844 | ||
845 | static void | |
846 | obj_coff_dim (int ignore ATTRIBUTE_UNUSED) | |
847 | { | |
848 | int d_index; | |
849 | ||
850 | if (def_symbol_in_progress == NULL) | |
851 | { | |
852 | as_warn (_(".dim pseudo-op used outside of .def/.endef: ignored.")); | |
853 | demand_empty_rest_of_line (); | |
854 | return; | |
855 | } | |
856 | ||
857 | S_SET_NUMBER_AUXILIARY (def_symbol_in_progress, 1); | |
858 | ||
859 | for (d_index = 0; d_index < DIMNUM; d_index++) | |
860 | { | |
861 | SKIP_WHITESPACES (); | |
862 | SA_SET_SYM_DIMEN (def_symbol_in_progress, d_index, | |
863 | get_absolute_expression ()); | |
864 | ||
865 | switch (*input_line_pointer) | |
866 | { | |
867 | case ',': | |
868 | input_line_pointer++; | |
869 | break; | |
870 | ||
871 | default: | |
872 | as_warn (_("badly formed .dim directive ignored")); | |
873 | /* Fall through. */ | |
874 | case '\n': | |
875 | case ';': | |
876 | d_index = DIMNUM; | |
877 | break; | |
878 | } | |
879 | } | |
880 | ||
881 | demand_empty_rest_of_line (); | |
882 | } | |
883 | ||
884 | static void | |
885 | obj_coff_line (int ignore ATTRIBUTE_UNUSED) | |
886 | { | |
887 | int this_base; | |
888 | ||
889 | if (def_symbol_in_progress == NULL) | |
890 | { | |
891 | /* Probably stabs-style line? */ | |
892 | obj_coff_ln (0); | |
893 | return; | |
894 | } | |
895 | ||
896 | this_base = get_absolute_expression (); | |
897 | if (streq (".bf", S_GET_NAME (def_symbol_in_progress))) | |
898 | coff_line_base = this_base; | |
899 | ||
900 | S_SET_NUMBER_AUXILIARY (def_symbol_in_progress, 1); | |
901 | SA_SET_SYM_LNNO (def_symbol_in_progress, this_base); | |
902 | ||
903 | demand_empty_rest_of_line (); | |
904 | ||
905 | #ifndef NO_LISTING | |
906 | if (streq (".bf", S_GET_NAME (def_symbol_in_progress))) | |
907 | { | |
908 | extern int listing; | |
909 | ||
910 | if (listing) | |
911 | listing_source_line ((unsigned int) this_base); | |
912 | } | |
913 | #endif | |
914 | } | |
915 | ||
916 | static void | |
917 | obj_coff_size (int ignore ATTRIBUTE_UNUSED) | |
918 | { | |
919 | if (def_symbol_in_progress == NULL) | |
920 | { | |
921 | as_warn (_(".size pseudo-op used outside of .def/.endef: ignored.")); | |
922 | demand_empty_rest_of_line (); | |
923 | return; | |
924 | } | |
925 | ||
926 | S_SET_NUMBER_AUXILIARY (def_symbol_in_progress, 1); | |
927 | SA_SET_SYM_SIZE (def_symbol_in_progress, get_absolute_expression ()); | |
928 | demand_empty_rest_of_line (); | |
929 | } | |
930 | ||
931 | static void | |
932 | obj_coff_scl (int ignore ATTRIBUTE_UNUSED) | |
933 | { | |
934 | if (def_symbol_in_progress == NULL) | |
935 | { | |
936 | as_warn (_(".scl pseudo-op used outside of .def/.endef: ignored.")); | |
937 | demand_empty_rest_of_line (); | |
938 | return; | |
939 | } | |
940 | ||
941 | S_SET_STORAGE_CLASS (def_symbol_in_progress, get_absolute_expression ()); | |
942 | demand_empty_rest_of_line (); | |
943 | } | |
944 | ||
945 | static void | |
946 | obj_coff_tag (int ignore ATTRIBUTE_UNUSED) | |
947 | { | |
948 | char *symbol_name; | |
949 | char name_end; | |
950 | ||
951 | if (def_symbol_in_progress == NULL) | |
952 | { | |
953 | as_warn (_(".tag pseudo-op used outside of .def/.endef: ignored.")); | |
954 | demand_empty_rest_of_line (); | |
955 | return; | |
956 | } | |
957 | ||
958 | S_SET_NUMBER_AUXILIARY (def_symbol_in_progress, 1); | |
959 | name_end = get_symbol_name (&symbol_name); | |
960 | ||
961 | #ifdef tc_canonicalize_symbol_name | |
962 | symbol_name = tc_canonicalize_symbol_name (symbol_name); | |
963 | #endif | |
964 | ||
965 | /* Assume that the symbol referred to by .tag is always defined. | |
966 | This was a bad assumption. I've added find_or_make. xoxorich. */ | |
967 | SA_SET_SYM_TAGNDX (def_symbol_in_progress, | |
968 | tag_find_or_make (symbol_name)); | |
969 | if (SA_GET_SYM_TAGNDX (def_symbol_in_progress) == 0L) | |
970 | as_warn (_("tag not found for .tag %s"), symbol_name); | |
971 | ||
972 | SF_SET_TAGGED (def_symbol_in_progress); | |
973 | ||
974 | (void) restore_line_pointer (name_end); | |
975 | demand_empty_rest_of_line (); | |
976 | } | |
977 | ||
978 | static void | |
979 | obj_coff_type (int ignore ATTRIBUTE_UNUSED) | |
980 | { | |
981 | if (def_symbol_in_progress == NULL) | |
982 | { | |
983 | as_warn (_(".type pseudo-op used outside of .def/.endef: ignored.")); | |
984 | demand_empty_rest_of_line (); | |
985 | return; | |
986 | } | |
987 | ||
988 | S_SET_DATA_TYPE (def_symbol_in_progress, get_absolute_expression ()); | |
989 | ||
990 | if (ISFCN (S_GET_DATA_TYPE (def_symbol_in_progress)) && | |
991 | S_GET_STORAGE_CLASS (def_symbol_in_progress) != C_TPDEF) | |
992 | SF_SET_FUNCTION (def_symbol_in_progress); | |
993 | ||
994 | demand_empty_rest_of_line (); | |
995 | } | |
996 | ||
997 | static void | |
998 | obj_coff_val (int ignore ATTRIBUTE_UNUSED) | |
999 | { | |
1000 | if (def_symbol_in_progress == NULL) | |
1001 | { | |
1002 | as_warn (_(".val pseudo-op used outside of .def/.endef: ignored.")); | |
1003 | demand_empty_rest_of_line (); | |
1004 | return; | |
1005 | } | |
1006 | ||
1007 | if (is_name_beginner (*input_line_pointer)) | |
1008 | { | |
1009 | char *symbol_name; | |
1010 | char name_end = get_symbol_name (&symbol_name); | |
1011 | ||
1012 | #ifdef tc_canonicalize_symbol_name | |
1013 | symbol_name = tc_canonicalize_symbol_name (symbol_name); | |
1014 | #endif | |
1015 | if (streq (symbol_name, ".")) | |
1016 | { | |
1017 | /* If the .val is != from the .def (e.g. statics). */ | |
1018 | symbol_set_frag (def_symbol_in_progress, frag_now); | |
1019 | S_SET_VALUE (def_symbol_in_progress, (valueT) frag_now_fix ()); | |
1020 | } | |
1021 | else if (! streq (S_GET_NAME (def_symbol_in_progress), symbol_name)) | |
1022 | { | |
1023 | expressionS exp; | |
1024 | ||
1025 | exp.X_op = O_symbol; | |
1026 | exp.X_add_symbol = symbol_find_or_make (symbol_name); | |
1027 | exp.X_op_symbol = NULL; | |
1028 | exp.X_add_number = 0; | |
1029 | symbol_set_value_expression (def_symbol_in_progress, &exp); | |
1030 | ||
1031 | /* If the segment is undefined when the forward reference is | |
1032 | resolved, then copy the segment id from the forward | |
1033 | symbol. */ | |
1034 | SF_SET_GET_SEGMENT (def_symbol_in_progress); | |
1035 | ||
1036 | /* FIXME: gcc can generate address expressions here in | |
1037 | unusual cases (search for "obscure" in sdbout.c). We | |
1038 | just ignore the offset here, thus generating incorrect | |
1039 | debugging information. We ignore the rest of the line | |
1040 | just below. */ | |
1041 | } | |
1042 | /* Otherwise, it is the name of a non debug symbol and its value | |
1043 | will be calculated later. */ | |
1044 | (void) restore_line_pointer (name_end); | |
1045 | } | |
1046 | else | |
1047 | { | |
1048 | S_SET_VALUE (def_symbol_in_progress, get_absolute_expression ()); | |
1049 | } | |
1050 | ||
1051 | demand_empty_rest_of_line (); | |
1052 | } | |
1053 | ||
1054 | #ifdef TE_PE | |
1055 | ||
1056 | /* Return nonzero if name begins with weak alternate symbol prefix. */ | |
1057 | ||
1058 | static int | |
1059 | weak_is_altname (const char * name) | |
1060 | { | |
1061 | return strneq (name, weak_altprefix, sizeof (weak_altprefix) - 1); | |
1062 | } | |
1063 | ||
1064 | /* Return the name of the alternate symbol | |
1065 | name corresponding to a weak symbol's name. */ | |
1066 | ||
1067 | static const char * | |
1068 | weak_name2altname (const char * name) | |
1069 | { | |
1070 | return concat (weak_altprefix, name, (char *) NULL); | |
1071 | } | |
1072 | ||
1073 | /* Return the name of the weak symbol corresponding to an | |
1074 | alternate symbol. */ | |
1075 | ||
1076 | static const char * | |
1077 | weak_altname2name (const char * name) | |
1078 | { | |
1079 | gas_assert (weak_is_altname (name)); | |
1080 | return xstrdup (name + 6); | |
1081 | } | |
1082 | ||
1083 | /* Make a weak symbol name unique by | |
1084 | appending the name of an external symbol. */ | |
1085 | ||
1086 | static const char * | |
1087 | weak_uniquify (const char * name) | |
1088 | { | |
1089 | const char * unique = ""; | |
1090 | ||
1091 | #ifdef TE_PE | |
1092 | if (an_external_name != NULL) | |
1093 | unique = an_external_name; | |
1094 | #endif | |
1095 | gas_assert (weak_is_altname (name)); | |
1096 | ||
1097 | return concat (name, ".", unique, (char *) NULL); | |
1098 | } | |
1099 | ||
1100 | void | |
1101 | pecoff_obj_set_weak_hook (symbolS *symbolP) | |
1102 | { | |
1103 | symbolS *alternateP; | |
1104 | ||
1105 | /* See _Microsoft Portable Executable and Common Object | |
1106 | File Format Specification_, section 5.5.3. | |
1107 | Create a symbol representing the alternate value. | |
1108 | coff_frob_symbol will set the value of this symbol from | |
1109 | the value of the weak symbol itself. */ | |
1110 | S_SET_STORAGE_CLASS (symbolP, C_NT_WEAK); | |
1111 | S_SET_NUMBER_AUXILIARY (symbolP, 1); | |
1112 | SA_SET_SYM_FSIZE (symbolP, IMAGE_WEAK_EXTERN_SEARCH_NOLIBRARY); | |
1113 | ||
1114 | alternateP = symbol_find_or_make (weak_name2altname (S_GET_NAME (symbolP))); | |
1115 | S_SET_EXTERNAL (alternateP); | |
1116 | S_SET_STORAGE_CLASS (alternateP, C_NT_WEAK); | |
1117 | ||
1118 | SA_SET_SYM_TAGNDX (symbolP, alternateP); | |
1119 | } | |
1120 | ||
1121 | void | |
1122 | pecoff_obj_clear_weak_hook (symbolS *symbolP) | |
1123 | { | |
1124 | symbolS *alternateP; | |
1125 | ||
1126 | S_SET_STORAGE_CLASS (symbolP, 0); | |
1127 | SA_SET_SYM_FSIZE (symbolP, 0); | |
1128 | ||
1129 | alternateP = symbol_find (weak_name2altname (S_GET_NAME (symbolP))); | |
1130 | S_CLEAR_EXTERNAL (alternateP); | |
1131 | } | |
1132 | ||
1133 | #endif /* TE_PE */ | |
1134 | ||
1135 | /* Handle .weak. This is a GNU extension in formats other than PE. */ | |
1136 | ||
1137 | static void | |
1138 | obj_coff_weak (int ignore ATTRIBUTE_UNUSED) | |
1139 | { | |
1140 | char *name; | |
1141 | int c; | |
1142 | symbolS *symbolP; | |
1143 | ||
1144 | do | |
1145 | { | |
1146 | c = get_symbol_name (&name); | |
1147 | if (*name == 0) | |
1148 | { | |
1149 | as_warn (_("badly formed .weak directive ignored")); | |
1150 | ignore_rest_of_line (); | |
1151 | return; | |
1152 | } | |
1153 | c = 0; | |
1154 | symbolP = symbol_find_or_make (name); | |
1155 | *input_line_pointer = c; | |
1156 | SKIP_WHITESPACE_AFTER_NAME (); | |
1157 | S_SET_WEAK (symbolP); | |
1158 | ||
1159 | if (c == ',') | |
1160 | { | |
1161 | input_line_pointer++; | |
1162 | SKIP_WHITESPACE (); | |
1163 | if (*input_line_pointer == '\n') | |
1164 | c = '\n'; | |
1165 | } | |
1166 | ||
1167 | } | |
1168 | while (c == ','); | |
1169 | ||
1170 | demand_empty_rest_of_line (); | |
1171 | } | |
1172 | ||
1173 | void | |
1174 | coff_obj_read_begin_hook (void) | |
1175 | { | |
1176 | /* These had better be the same. Usually 18 bytes. */ | |
1177 | know (sizeof (SYMENT) == sizeof (AUXENT)); | |
1178 | know (SYMESZ == AUXESZ); | |
1179 | tag_init (); | |
1180 | } | |
1181 | ||
1182 | symbolS *coff_last_function; | |
1183 | #ifndef OBJ_XCOFF | |
1184 | static symbolS *coff_last_bf; | |
1185 | #endif | |
1186 | ||
1187 | void | |
1188 | coff_frob_symbol (symbolS *symp, int *punt) | |
1189 | { | |
1190 | static symbolS *last_tagP; | |
1191 | static stack *block_stack; | |
1192 | static symbolS *set_end; | |
1193 | symbolS *next_set_end = NULL; | |
1194 | ||
1195 | if (symp == &abs_symbol) | |
1196 | { | |
1197 | *punt = 1; | |
1198 | return; | |
1199 | } | |
1200 | ||
1201 | if (current_lineno_sym) | |
1202 | coff_add_linesym (NULL); | |
1203 | ||
1204 | if (!block_stack) | |
1205 | block_stack = stack_init (512, sizeof (symbolS*)); | |
1206 | ||
1207 | #ifdef TE_PE | |
1208 | if (S_GET_STORAGE_CLASS (symp) == C_NT_WEAK | |
1209 | && ! S_IS_WEAK (symp) | |
1210 | && weak_is_altname (S_GET_NAME (symp))) | |
1211 | { | |
1212 | /* This is a weak alternate symbol. All processing of | |
1213 | PECOFFweak symbols is done here, through the alternate. */ | |
1214 | symbolS *weakp = symbol_find_noref (weak_altname2name | |
1215 | (S_GET_NAME (symp)), 1); | |
1216 | ||
1217 | gas_assert (weakp); | |
1218 | gas_assert (S_GET_NUMBER_AUXILIARY (weakp) == 1); | |
1219 | ||
1220 | if (! S_IS_WEAK (weakp)) | |
1221 | { | |
1222 | /* The symbol was turned from weak to strong. Discard altname. */ | |
1223 | *punt = 1; | |
1224 | return; | |
1225 | } | |
1226 | else if (symbol_equated_p (weakp)) | |
1227 | { | |
1228 | /* The weak symbol has an alternate specified; symp is unneeded. */ | |
1229 | S_SET_STORAGE_CLASS (weakp, C_NT_WEAK); | |
1230 | SA_SET_SYM_TAGNDX (weakp, | |
1231 | symbol_get_value_expression (weakp)->X_add_symbol); | |
1232 | ||
1233 | S_CLEAR_EXTERNAL (symp); | |
1234 | *punt = 1; | |
1235 | return; | |
1236 | } | |
1237 | else | |
1238 | { | |
1239 | /* The weak symbol has been assigned an alternate value. | |
1240 | Copy this value to symp, and set symp as weakp's alternate. */ | |
1241 | if (S_GET_STORAGE_CLASS (weakp) != C_NT_WEAK) | |
1242 | { | |
1243 | S_SET_STORAGE_CLASS (symp, S_GET_STORAGE_CLASS (weakp)); | |
1244 | S_SET_STORAGE_CLASS (weakp, C_NT_WEAK); | |
1245 | } | |
1246 | ||
1247 | if (S_IS_DEFINED (weakp)) | |
1248 | { | |
1249 | /* This is a defined weak symbol. Copy value information | |
1250 | from the weak symbol itself to the alternate symbol. */ | |
1251 | symbol_set_value_expression (symp, | |
1252 | symbol_get_value_expression (weakp)); | |
1253 | symbol_set_frag (symp, symbol_get_frag (weakp)); | |
1254 | S_SET_SEGMENT (symp, S_GET_SEGMENT (weakp)); | |
1255 | } | |
1256 | else | |
1257 | { | |
1258 | /* This is an undefined weak symbol. | |
1259 | Define the alternate symbol to zero. */ | |
1260 | S_SET_VALUE (symp, 0); | |
1261 | S_SET_SEGMENT (symp, absolute_section); | |
1262 | } | |
1263 | ||
1264 | S_SET_NAME (symp, weak_uniquify (S_GET_NAME (symp))); | |
1265 | S_SET_STORAGE_CLASS (symp, C_EXT); | |
1266 | ||
1267 | S_SET_VALUE (weakp, 0); | |
1268 | S_SET_SEGMENT (weakp, undefined_section); | |
1269 | } | |
1270 | } | |
1271 | #else /* TE_PE */ | |
1272 | if (S_IS_WEAK (symp)) | |
1273 | S_SET_STORAGE_CLASS (symp, C_WEAKEXT); | |
1274 | #endif /* TE_PE */ | |
1275 | ||
1276 | if (!S_IS_DEFINED (symp) | |
1277 | && !S_IS_WEAK (symp) | |
1278 | && S_GET_STORAGE_CLASS (symp) != C_STAT) | |
1279 | S_SET_STORAGE_CLASS (symp, C_EXT); | |
1280 | ||
1281 | if (!SF_GET_DEBUG (symp)) | |
1282 | { | |
1283 | symbolS * real; | |
1284 | ||
1285 | if (!SF_GET_LOCAL (symp) | |
1286 | && !SF_GET_STATICS (symp) | |
1287 | && S_GET_STORAGE_CLASS (symp) != C_LABEL | |
1288 | && symbol_constant_p (symp) | |
1289 | && (real = symbol_find_noref (S_GET_NAME (symp), 1)) | |
1290 | && S_GET_STORAGE_CLASS (real) == C_NULL | |
1291 | && real != symp) | |
1292 | { | |
1293 | c_symbol_merge (symp, real); | |
1294 | *punt = 1; | |
1295 | return; | |
1296 | } | |
1297 | ||
1298 | if (!S_IS_DEFINED (symp) && !SF_GET_LOCAL (symp)) | |
1299 | { | |
1300 | gas_assert (S_GET_VALUE (symp) == 0); | |
1301 | if (S_IS_WEAKREFD (symp)) | |
1302 | *punt = 1; | |
1303 | else | |
1304 | S_SET_EXTERNAL (symp); | |
1305 | } | |
1306 | else if (S_GET_STORAGE_CLASS (symp) == C_NULL) | |
1307 | { | |
1308 | if (S_GET_SEGMENT (symp) == text_section | |
1309 | && symp != seg_info (text_section)->sym) | |
1310 | S_SET_STORAGE_CLASS (symp, C_LABEL); | |
1311 | else | |
1312 | S_SET_STORAGE_CLASS (symp, C_STAT); | |
1313 | } | |
1314 | ||
1315 | if (SF_GET_PROCESS (symp)) | |
1316 | { | |
1317 | if (S_GET_STORAGE_CLASS (symp) == C_BLOCK) | |
1318 | { | |
1319 | if (streq (S_GET_NAME (symp), ".bb")) | |
1320 | stack_push (block_stack, (char *) &symp); | |
1321 | else | |
1322 | { | |
1323 | symbolS *begin; | |
1324 | ||
1325 | begin = *(symbolS **) stack_pop (block_stack); | |
1326 | if (begin == 0) | |
1327 | as_warn (_("mismatched .eb")); | |
1328 | else | |
1329 | next_set_end = begin; | |
1330 | } | |
1331 | } | |
1332 | ||
1333 | if (coff_last_function == 0 && SF_GET_FUNCTION (symp) | |
1334 | && S_IS_DEFINED (symp)) | |
1335 | { | |
1336 | union internal_auxent *auxp; | |
1337 | ||
1338 | coff_last_function = symp; | |
1339 | if (S_GET_NUMBER_AUXILIARY (symp) < 1) | |
1340 | S_SET_NUMBER_AUXILIARY (symp, 1); | |
1341 | auxp = SYM_AUXENT (symp); | |
1342 | memset (auxp->x_sym.x_fcnary.x_ary.x_dimen, 0, | |
1343 | sizeof (auxp->x_sym.x_fcnary.x_ary.x_dimen)); | |
1344 | } | |
1345 | ||
1346 | if (S_GET_STORAGE_CLASS (symp) == C_EFCN | |
1347 | && S_IS_DEFINED (symp)) | |
1348 | { | |
1349 | if (coff_last_function == 0) | |
1350 | as_fatal (_("C_EFCN symbol for %s out of scope"), | |
1351 | S_GET_NAME (symp)); | |
1352 | SA_SET_SYM_FSIZE (coff_last_function, | |
1353 | (long) (S_GET_VALUE (symp) | |
1354 | - S_GET_VALUE (coff_last_function))); | |
1355 | next_set_end = coff_last_function; | |
1356 | coff_last_function = 0; | |
1357 | } | |
1358 | } | |
1359 | ||
1360 | if (S_IS_EXTERNAL (symp)) | |
1361 | S_SET_STORAGE_CLASS (symp, C_EXT); | |
1362 | else if (SF_GET_LOCAL (symp)) | |
1363 | *punt = 1; | |
1364 | ||
1365 | if (SF_GET_FUNCTION (symp)) | |
1366 | symbol_get_bfdsym (symp)->flags |= BSF_FUNCTION; | |
1367 | } | |
1368 | ||
1369 | /* Double check weak symbols. */ | |
1370 | if (S_IS_WEAK (symp) && S_IS_COMMON (symp)) | |
1371 | as_bad (_("Symbol `%s' can not be both weak and common"), | |
1372 | S_GET_NAME (symp)); | |
1373 | ||
1374 | if (SF_GET_TAG (symp)) | |
1375 | last_tagP = symp; | |
1376 | else if (S_GET_STORAGE_CLASS (symp) == C_EOS) | |
1377 | next_set_end = last_tagP; | |
1378 | ||
1379 | #ifdef OBJ_XCOFF | |
1380 | /* This is pretty horrible, but we have to set *punt correctly in | |
1381 | order to call SA_SET_SYM_ENDNDX correctly. */ | |
1382 | if (! symbol_used_in_reloc_p (symp) | |
1383 | && ((symbol_get_bfdsym (symp)->flags & BSF_SECTION_SYM) != 0 | |
1384 | || (! (S_IS_EXTERNAL (symp) || S_IS_WEAK (symp)) | |
1385 | && ! symbol_get_tc (symp)->output | |
1386 | && S_GET_STORAGE_CLASS (symp) != C_FILE))) | |
1387 | *punt = 1; | |
1388 | #endif | |
1389 | ||
1390 | if (set_end != (symbolS *) NULL | |
1391 | && ! *punt | |
1392 | && ((symbol_get_bfdsym (symp)->flags & BSF_NOT_AT_END) != 0 | |
1393 | || (S_IS_DEFINED (symp) | |
1394 | && ! S_IS_COMMON (symp) | |
1395 | && (! S_IS_EXTERNAL (symp) || SF_GET_FUNCTION (symp))))) | |
1396 | { | |
1397 | SA_SET_SYM_ENDNDX (set_end, symp); | |
1398 | set_end = NULL; | |
1399 | } | |
1400 | ||
1401 | if (next_set_end != NULL) | |
1402 | { | |
1403 | if (set_end != NULL) | |
1404 | as_warn (_("Warning: internal error: forgetting to set endndx of %s"), | |
1405 | S_GET_NAME (set_end)); | |
1406 | set_end = next_set_end; | |
1407 | } | |
1408 | ||
1409 | #ifndef OBJ_XCOFF | |
1410 | if (! *punt | |
1411 | && S_GET_STORAGE_CLASS (symp) == C_FCN | |
1412 | && streq (S_GET_NAME (symp), ".bf")) | |
1413 | { | |
1414 | if (coff_last_bf != NULL) | |
1415 | SA_SET_SYM_ENDNDX (coff_last_bf, symp); | |
1416 | coff_last_bf = symp; | |
1417 | } | |
1418 | #endif | |
1419 | if (coffsymbol (symbol_get_bfdsym (symp))->lineno) | |
1420 | { | |
1421 | int i; | |
1422 | struct line_no *lptr; | |
1423 | alent *l; | |
1424 | ||
1425 | lptr = (struct line_no *) coffsymbol (symbol_get_bfdsym (symp))->lineno; | |
1426 | for (i = 0; lptr; lptr = lptr->next) | |
1427 | i++; | |
1428 | lptr = (struct line_no *) coffsymbol (symbol_get_bfdsym (symp))->lineno; | |
1429 | ||
1430 | /* We need i entries for line numbers, plus 1 for the first | |
1431 | entry which BFD will override, plus 1 for the last zero | |
1432 | entry (a marker for BFD). */ | |
1433 | l = XNEWVEC (alent, (i + 2)); | |
1434 | coffsymbol (symbol_get_bfdsym (symp))->lineno = l; | |
1435 | l[i + 1].line_number = 0; | |
1436 | l[i + 1].u.sym = NULL; | |
1437 | for (; i > 0; i--) | |
1438 | { | |
1439 | if (lptr->frag) | |
1440 | lptr->l.u.offset += lptr->frag->fr_address / OCTETS_PER_BYTE; | |
1441 | l[i] = lptr->l; | |
1442 | lptr = lptr->next; | |
1443 | } | |
1444 | } | |
1445 | } | |
1446 | ||
1447 | void | |
1448 | coff_adjust_section_syms (bfd *abfd ATTRIBUTE_UNUSED, | |
1449 | asection *sec, | |
1450 | void * x ATTRIBUTE_UNUSED) | |
1451 | { | |
1452 | symbolS *secsym; | |
1453 | segment_info_type *seginfo = seg_info (sec); | |
1454 | int nlnno, nrelocs = 0; | |
1455 | ||
1456 | /* RS/6000 gas creates a .debug section manually in ppc_frob_file in | |
1457 | tc-ppc.c. Do not get confused by it. */ | |
1458 | if (seginfo == NULL) | |
1459 | return; | |
1460 | ||
1461 | if (streq (sec->name, ".text")) | |
1462 | nlnno = coff_n_line_nos; | |
1463 | else | |
1464 | nlnno = 0; | |
1465 | { | |
1466 | /* @@ Hope that none of the fixups expand to more than one reloc | |
1467 | entry... */ | |
1468 | fixS *fixp = seginfo->fix_root; | |
1469 | while (fixp) | |
1470 | { | |
1471 | if (! fixp->fx_done) | |
1472 | nrelocs++; | |
1473 | fixp = fixp->fx_next; | |
1474 | } | |
1475 | } | |
1476 | if (bfd_section_size (sec) == 0 | |
1477 | && nrelocs == 0 | |
1478 | && nlnno == 0 | |
1479 | && sec != text_section | |
1480 | && sec != data_section | |
1481 | && sec != bss_section) | |
1482 | return; | |
1483 | ||
1484 | secsym = section_symbol (sec); | |
1485 | /* This is an estimate; we'll plug in the real value using | |
1486 | SET_SECTION_RELOCS later */ | |
1487 | SA_SET_SCN_NRELOC (secsym, nrelocs); | |
1488 | SA_SET_SCN_NLINNO (secsym, nlnno); | |
1489 | } | |
1490 | ||
1491 | void | |
1492 | coff_frob_file_after_relocs (void) | |
1493 | { | |
1494 | bfd_map_over_sections (stdoutput, coff_adjust_section_syms, NULL); | |
1495 | } | |
1496 | ||
1497 | /* Implement the .section pseudo op: | |
1498 | .section name {, "flags"} | |
1499 | ^ ^ | |
1500 | | +--- optional flags: 'b' for bss | |
1501 | | 'i' for info | |
1502 | +-- section name 'l' for lib | |
1503 | 'n' for noload | |
1504 | 'o' for over | |
1505 | 'w' for data | |
1506 | 'd' (apparently m88k for data) | |
1507 | 'e' for exclude | |
1508 | 'x' for text | |
1509 | 'r' for read-only data | |
1510 | 's' for shared data (PE) | |
1511 | 'y' for noread | |
1512 | '0' - '9' for power-of-two alignment (GNU extension). | |
1513 | But if the argument is not a quoted string, treat it as a | |
1514 | subsegment number. | |
1515 | ||
1516 | Note the 'a' flag is silently ignored. This allows the same | |
1517 | .section directive to be parsed in both ELF and COFF formats. */ | |
1518 | ||
1519 | void | |
1520 | obj_coff_section (int ignore ATTRIBUTE_UNUSED) | |
1521 | { | |
1522 | /* Strip out the section name. */ | |
1523 | char *section_name; | |
1524 | char c; | |
1525 | int alignment = -1; | |
1526 | char *name; | |
1527 | unsigned int exp; | |
1528 | flagword flags, oldflags; | |
1529 | asection *sec; | |
1530 | bfd_boolean is_bss = FALSE; | |
1531 | ||
1532 | if (flag_mri) | |
1533 | { | |
1534 | char type; | |
1535 | ||
1536 | s_mri_sect (&type); | |
1537 | return; | |
1538 | } | |
1539 | ||
1540 | c = get_symbol_name (§ion_name); | |
1541 | name = xmemdup0 (section_name, input_line_pointer - section_name); | |
1542 | *input_line_pointer = c; | |
1543 | SKIP_WHITESPACE_AFTER_NAME (); | |
1544 | ||
1545 | exp = 0; | |
1546 | flags = SEC_NO_FLAGS; | |
1547 | ||
1548 | if (*input_line_pointer == ',') | |
1549 | { | |
1550 | ++input_line_pointer; | |
1551 | SKIP_WHITESPACE (); | |
1552 | if (*input_line_pointer != '"') | |
1553 | exp = get_absolute_expression (); | |
1554 | else | |
1555 | { | |
1556 | unsigned char attr; | |
1557 | int readonly_removed = 0; | |
1558 | int load_removed = 0; | |
1559 | ||
1560 | while (attr = *++input_line_pointer, | |
1561 | attr != '"' | |
1562 | && ! is_end_of_line[attr]) | |
1563 | { | |
1564 | if (ISDIGIT (attr)) | |
1565 | { | |
1566 | alignment = attr - '0'; | |
1567 | continue; | |
1568 | } | |
1569 | switch (attr) | |
1570 | { | |
1571 | case 'e': | |
1572 | /* Exclude section from linking. */ | |
1573 | flags |= SEC_EXCLUDE; | |
1574 | break; | |
1575 | ||
1576 | case 'b': | |
1577 | /* Uninitialised data section. */ | |
1578 | flags |= SEC_ALLOC; | |
1579 | flags &=~ SEC_LOAD; | |
1580 | is_bss = TRUE; | |
1581 | break; | |
1582 | ||
1583 | case 'n': | |
1584 | /* Section not loaded. */ | |
1585 | flags &=~ SEC_LOAD; | |
1586 | flags |= SEC_NEVER_LOAD; | |
1587 | load_removed = 1; | |
1588 | break; | |
1589 | ||
1590 | case 's': | |
1591 | /* Shared section. */ | |
1592 | flags |= SEC_COFF_SHARED; | |
1593 | /* Fall through. */ | |
1594 | case 'd': | |
1595 | /* Data section. */ | |
1596 | flags |= SEC_DATA; | |
1597 | if (! load_removed) | |
1598 | flags |= SEC_LOAD; | |
1599 | flags &=~ SEC_READONLY; | |
1600 | break; | |
1601 | ||
1602 | case 'w': | |
1603 | /* Writable section. */ | |
1604 | flags &=~ SEC_READONLY; | |
1605 | readonly_removed = 1; | |
1606 | break; | |
1607 | ||
1608 | case 'a': | |
1609 | /* Ignore. Here for compatibility with ELF. */ | |
1610 | break; | |
1611 | ||
1612 | case 'r': /* Read-only section. Implies a data section. */ | |
1613 | readonly_removed = 0; | |
1614 | /* Fall through. */ | |
1615 | case 'x': /* Executable section. */ | |
1616 | /* If we are setting the 'x' attribute or if the 'r' | |
1617 | attribute is being used to restore the readonly status | |
1618 | of a code section (eg "wxr") then set the SEC_CODE flag, | |
1619 | otherwise set the SEC_DATA flag. */ | |
1620 | flags |= (attr == 'x' || (flags & SEC_CODE) ? SEC_CODE : SEC_DATA); | |
1621 | if (! load_removed) | |
1622 | flags |= SEC_LOAD; | |
1623 | /* Note - the READONLY flag is set here, even for the 'x' | |
1624 | attribute in order to be compatible with the MSVC | |
1625 | linker. */ | |
1626 | if (! readonly_removed) | |
1627 | flags |= SEC_READONLY; | |
1628 | break; | |
1629 | ||
1630 | case 'y': | |
1631 | flags |= SEC_COFF_NOREAD | SEC_READONLY; | |
1632 | break; | |
1633 | ||
1634 | case 'i': /* STYP_INFO */ | |
1635 | case 'l': /* STYP_LIB */ | |
1636 | case 'o': /* STYP_OVER */ | |
1637 | as_warn (_("unsupported section attribute '%c'"), attr); | |
1638 | break; | |
1639 | ||
1640 | default: | |
1641 | as_warn (_("unknown section attribute '%c'"), attr); | |
1642 | break; | |
1643 | } | |
1644 | } | |
1645 | if (attr == '"') | |
1646 | ++input_line_pointer; | |
1647 | } | |
1648 | } | |
1649 | ||
1650 | sec = subseg_new (name, (subsegT) exp); | |
1651 | ||
1652 | if (is_bss) | |
1653 | seg_info (sec)->bss = 1; | |
1654 | ||
1655 | if (alignment >= 0) | |
1656 | sec->alignment_power = alignment; | |
1657 | ||
1658 | oldflags = bfd_section_flags (sec); | |
1659 | if (oldflags == SEC_NO_FLAGS) | |
1660 | { | |
1661 | /* Set section flags for a new section just created by subseg_new. | |
1662 | Provide a default if no flags were parsed. */ | |
1663 | if (flags == SEC_NO_FLAGS) | |
1664 | flags = TC_COFF_SECTION_DEFAULT_ATTRIBUTES; | |
1665 | ||
1666 | #ifdef COFF_LONG_SECTION_NAMES | |
1667 | /* Add SEC_LINK_ONCE and SEC_LINK_DUPLICATES_DISCARD to .gnu.linkonce | |
1668 | sections so adjust_reloc_syms in write.c will correctly handle | |
1669 | relocs which refer to non-local symbols in these sections. */ | |
1670 | if (strneq (name, ".gnu.linkonce", sizeof (".gnu.linkonce") - 1)) | |
1671 | flags |= SEC_LINK_ONCE | SEC_LINK_DUPLICATES_DISCARD; | |
1672 | #endif | |
1673 | ||
1674 | if (!bfd_set_section_flags (sec, flags)) | |
1675 | as_warn (_("error setting flags for \"%s\": %s"), | |
1676 | bfd_section_name (sec), | |
1677 | bfd_errmsg (bfd_get_error ())); | |
1678 | } | |
1679 | else if (flags != SEC_NO_FLAGS) | |
1680 | { | |
1681 | /* This section's attributes have already been set. Warn if the | |
1682 | attributes don't match. */ | |
1683 | flagword matchflags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_CODE | |
1684 | | SEC_DATA | SEC_COFF_SHARED | SEC_NEVER_LOAD | |
1685 | | SEC_COFF_NOREAD); | |
1686 | if ((flags ^ oldflags) & matchflags) | |
1687 | as_warn (_("Ignoring changed section attributes for %s"), name); | |
1688 | } | |
1689 | ||
1690 | demand_empty_rest_of_line (); | |
1691 | } | |
1692 | ||
1693 | void | |
1694 | coff_adjust_symtab (void) | |
1695 | { | |
1696 | if (symbol_rootP == NULL | |
1697 | || S_GET_STORAGE_CLASS (symbol_rootP) != C_FILE) | |
1698 | c_dot_file_symbol ("fake", 0); | |
1699 | } | |
1700 | ||
1701 | void | |
1702 | coff_frob_section (segT sec) | |
1703 | { | |
1704 | segT strsec; | |
1705 | char *p; | |
1706 | fragS *fragp; | |
1707 | bfd_vma n_entries; | |
1708 | ||
1709 | /* The COFF back end in BFD requires that all section sizes be | |
1710 | rounded up to multiples of the corresponding section alignments, | |
1711 | supposedly because standard COFF has no other way of encoding alignment | |
1712 | for sections. If your COFF flavor has a different way of encoding | |
1713 | section alignment, then skip this step, as TICOFF does. */ | |
1714 | bfd_vma size = bfd_section_size (sec); | |
1715 | #if !defined(TICOFF) | |
1716 | bfd_vma align_power = (bfd_vma) sec->alignment_power + OCTETS_PER_BYTE_POWER; | |
1717 | bfd_vma mask = ((bfd_vma) 1 << align_power) - 1; | |
1718 | ||
1719 | if (size & mask) | |
1720 | { | |
1721 | bfd_vma new_size; | |
1722 | fragS *last; | |
1723 | ||
1724 | new_size = (size + mask) & ~mask; | |
1725 | bfd_set_section_size (sec, new_size); | |
1726 | ||
1727 | /* If the size had to be rounded up, add some padding in | |
1728 | the last non-empty frag. */ | |
1729 | fragp = seg_info (sec)->frchainP->frch_root; | |
1730 | last = seg_info (sec)->frchainP->frch_last; | |
1731 | while (fragp->fr_next != last) | |
1732 | fragp = fragp->fr_next; | |
1733 | last->fr_address = size; | |
1734 | fragp->fr_offset += new_size - size; | |
1735 | } | |
1736 | #endif | |
1737 | ||
1738 | /* If the section size is non-zero, the section symbol needs an aux | |
1739 | entry associated with it, indicating the size. We don't know | |
1740 | all the values yet; coff_frob_symbol will fill them in later. */ | |
1741 | #ifndef TICOFF | |
1742 | if (size != 0 | |
1743 | || sec == text_section | |
1744 | || sec == data_section | |
1745 | || sec == bss_section) | |
1746 | #endif | |
1747 | { | |
1748 | symbolS *secsym = section_symbol (sec); | |
1749 | unsigned char sclass = C_STAT; | |
1750 | ||
1751 | #ifdef OBJ_XCOFF | |
1752 | if (bfd_section_flags (sec) & SEC_DEBUGGING) | |
1753 | sclass = C_DWARF; | |
1754 | #endif | |
1755 | S_SET_STORAGE_CLASS (secsym, sclass); | |
1756 | S_SET_NUMBER_AUXILIARY (secsym, 1); | |
1757 | SF_SET_STATICS (secsym); | |
1758 | SA_SET_SCN_SCNLEN (secsym, size); | |
1759 | } | |
1760 | /* FIXME: These should be in a "stabs.h" file, or maybe as.h. */ | |
1761 | #ifndef STAB_SECTION_NAME | |
1762 | #define STAB_SECTION_NAME ".stab" | |
1763 | #endif | |
1764 | #ifndef STAB_STRING_SECTION_NAME | |
1765 | #define STAB_STRING_SECTION_NAME ".stabstr" | |
1766 | #endif | |
1767 | if (! streq (STAB_STRING_SECTION_NAME, sec->name)) | |
1768 | return; | |
1769 | ||
1770 | strsec = sec; | |
1771 | sec = subseg_get (STAB_SECTION_NAME, 0); | |
1772 | /* size is already rounded up, since other section will be listed first */ | |
1773 | size = bfd_section_size (strsec); | |
1774 | ||
1775 | n_entries = bfd_section_size (sec) / 12 - 1; | |
1776 | ||
1777 | /* Find first non-empty frag. It should be large enough. */ | |
1778 | fragp = seg_info (sec)->frchainP->frch_root; | |
1779 | while (fragp && fragp->fr_fix == 0) | |
1780 | fragp = fragp->fr_next; | |
1781 | gas_assert (fragp != 0 && fragp->fr_fix >= 12); | |
1782 | ||
1783 | /* Store the values. */ | |
1784 | p = fragp->fr_literal; | |
1785 | bfd_h_put_16 (stdoutput, n_entries, (bfd_byte *) p + 6); | |
1786 | bfd_h_put_32 (stdoutput, size, (bfd_byte *) p + 8); | |
1787 | } | |
1788 | ||
1789 | void | |
1790 | obj_coff_init_stab_section (segT seg) | |
1791 | { | |
1792 | const char *file; | |
1793 | char *p; | |
1794 | char *stabstr_name; | |
1795 | unsigned int stroff; | |
1796 | ||
1797 | /* Make space for this first symbol. */ | |
1798 | p = frag_more (12); | |
1799 | /* Zero it out. */ | |
1800 | memset (p, 0, 12); | |
1801 | file = as_where ((unsigned int *) NULL); | |
1802 | stabstr_name = concat (seg->name, "str", (char *) NULL); | |
1803 | stroff = get_stab_string_offset (file, stabstr_name, TRUE); | |
1804 | know (stroff == 1); | |
1805 | md_number_to_chars (p, stroff, 4); | |
1806 | } | |
1807 | ||
1808 | #ifdef DEBUG | |
1809 | const char * s_get_name (symbolS *); | |
1810 | ||
1811 | const char * | |
1812 | s_get_name (symbolS *s) | |
1813 | { | |
1814 | return ((s == NULL) ? "(NULL)" : S_GET_NAME (s)); | |
1815 | } | |
1816 | ||
1817 | void symbol_dump (void); | |
1818 | ||
1819 | void | |
1820 | symbol_dump (void) | |
1821 | { | |
1822 | symbolS *symbolP; | |
1823 | ||
1824 | for (symbolP = symbol_rootP; symbolP; symbolP = symbol_next (symbolP)) | |
1825 | printf (_("0x%lx: \"%s\" type = %ld, class = %d, segment = %d\n"), | |
1826 | (unsigned long) symbolP, | |
1827 | S_GET_NAME (symbolP), | |
1828 | (long) S_GET_DATA_TYPE (symbolP), | |
1829 | S_GET_STORAGE_CLASS (symbolP), | |
1830 | (int) S_GET_SEGMENT (symbolP)); | |
1831 | } | |
1832 | ||
1833 | #endif /* DEBUG */ | |
1834 | ||
1835 | const pseudo_typeS coff_pseudo_table[] = | |
1836 | { | |
1837 | {"ABORT", s_abort, 0}, | |
1838 | {"appline", obj_coff_ln, 1}, | |
1839 | /* We accept the .bss directive for backward compatibility with | |
1840 | earlier versions of gas. */ | |
1841 | {"bss", obj_coff_bss, 0}, | |
1842 | #ifdef TE_PE | |
1843 | /* PE provides an enhanced version of .comm with alignment. */ | |
1844 | {"comm", obj_coff_comm, 0}, | |
1845 | #endif /* TE_PE */ | |
1846 | {"def", obj_coff_def, 0}, | |
1847 | {"dim", obj_coff_dim, 0}, | |
1848 | {"endef", obj_coff_endef, 0}, | |
1849 | {"ident", obj_coff_ident, 0}, | |
1850 | {"line", obj_coff_line, 0}, | |
1851 | {"ln", obj_coff_ln, 0}, | |
1852 | {"scl", obj_coff_scl, 0}, | |
1853 | {"sect", obj_coff_section, 0}, | |
1854 | {"sect.s", obj_coff_section, 0}, | |
1855 | {"section", obj_coff_section, 0}, | |
1856 | {"section.s", obj_coff_section, 0}, | |
1857 | /* FIXME: We ignore the MRI short attribute. */ | |
1858 | {"size", obj_coff_size, 0}, | |
1859 | {"tag", obj_coff_tag, 0}, | |
1860 | {"type", obj_coff_type, 0}, | |
1861 | {"val", obj_coff_val, 0}, | |
1862 | {"version", s_ignore, 0}, | |
1863 | {"loc", obj_coff_loc, 0}, | |
1864 | {"optim", s_ignore, 0}, /* For sun386i cc (?) */ | |
1865 | {"weak", obj_coff_weak, 0}, | |
1866 | #if defined TC_TIC4X | |
1867 | /* The tic4x uses sdef instead of def. */ | |
1868 | {"sdef", obj_coff_def, 0}, | |
1869 | #endif | |
1870 | #if defined(SEH_CMDS) | |
1871 | SEH_CMDS | |
1872 | #endif | |
1873 | {NULL, NULL, 0} | |
1874 | }; | |
1875 | \f | |
1876 | ||
1877 | /* Support for a COFF emulation. */ | |
1878 | ||
1879 | static void | |
1880 | coff_pop_insert (void) | |
1881 | { | |
1882 | pop_insert (coff_pseudo_table); | |
1883 | } | |
1884 | ||
1885 | static int | |
1886 | coff_separate_stab_sections (void) | |
1887 | { | |
1888 | return 1; | |
1889 | } | |
1890 | ||
1891 | const struct format_ops coff_format_ops = | |
1892 | { | |
1893 | bfd_target_coff_flavour, | |
1894 | 0, /* dfl_leading_underscore */ | |
1895 | 1, /* emit_section_symbols */ | |
1896 | 0, /* begin */ | |
1897 | c_dot_file_symbol, | |
1898 | coff_frob_symbol, | |
1899 | 0, /* frob_file */ | |
1900 | 0, /* frob_file_before_adjust */ | |
1901 | 0, /* frob_file_before_fix */ | |
1902 | coff_frob_file_after_relocs, | |
1903 | 0, /* s_get_size */ | |
1904 | 0, /* s_set_size */ | |
1905 | 0, /* s_get_align */ | |
1906 | 0, /* s_set_align */ | |
1907 | 0, /* s_get_other */ | |
1908 | 0, /* s_set_other */ | |
1909 | 0, /* s_get_desc */ | |
1910 | 0, /* s_set_desc */ | |
1911 | 0, /* s_get_type */ | |
1912 | 0, /* s_set_type */ | |
1913 | 0, /* copy_symbol_attributes */ | |
1914 | 0, /* generate_asm_lineno */ | |
1915 | 0, /* process_stab */ | |
1916 | coff_separate_stab_sections, | |
1917 | obj_coff_init_stab_section, | |
1918 | 0, /* sec_sym_ok_for_reloc */ | |
1919 | coff_pop_insert, | |
1920 | 0, /* ecoff_set_ext */ | |
1921 | coff_obj_read_begin_hook, | |
1922 | coff_obj_symbol_new_hook, | |
1923 | coff_obj_symbol_clone_hook, | |
1924 | coff_adjust_symtab | |
1925 | }; |