Commit | Line | Data |
---|---|---|
252b5132 | 1 | /* coff object file format |
f7e42eb4 | 2 | Copyright 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, |
f17c130b | 3 | 1999, 2000, 2001, 2002, 2003, 2004, 2005 |
252b5132 RH |
4 | Free Software Foundation, Inc. |
5 | ||
6 | This file is part of GAS. | |
7 | ||
8 | GAS is free software; you can redistribute it and/or modify | |
9 | it under the terms of the GNU General Public License as published by | |
10 | the Free Software Foundation; either version 2, or (at your option) | |
11 | any later version. | |
12 | ||
13 | GAS is distributed in the hope that it will be useful, | |
14 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | GNU General Public License for more details. | |
17 | ||
18 | You should have received a copy of the GNU General Public License | |
19 | along with GAS; see the file COPYING. If not, write to the Free | |
4b4da160 NC |
20 | Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA |
21 | 02110-1301, USA. */ | |
252b5132 RH |
22 | |
23 | #define OBJ_HEADER "obj-coff.h" | |
24 | ||
25 | #include "as.h" | |
26 | #include "obstack.h" | |
27 | #include "subsegs.h" | |
28 | ||
977cdf5a NC |
29 | #ifdef TE_PE |
30 | #include "coff/pe.h" | |
31 | #endif | |
32 | ||
a5324a3e NC |
33 | #define streq(a,b) (strcmp ((a), (b)) == 0) |
34 | #define strneq(a,b,n) (strncmp ((a), (b), (n)) == 0) | |
35 | ||
252b5132 RH |
36 | /* I think this is probably always correct. */ |
37 | #ifndef KEEP_RELOC_INFO | |
38 | #define KEEP_RELOC_INFO | |
39 | #endif | |
40 | ||
7be1c489 AM |
41 | /* obj_coff_section will use this macro to set a new section's |
42 | attributes when a directive has no valid flags or the "w" flag is | |
43 | used. This default should be appropriate for most. */ | |
b8a9dcab NC |
44 | #ifndef TC_COFF_SECTION_DEFAULT_ATTRIBUTES |
45 | #define TC_COFF_SECTION_DEFAULT_ATTRIBUTES (SEC_LOAD | SEC_DATA) | |
46 | #endif | |
47 | ||
8d28c9d7 AM |
48 | /* This is used to hold the symbol built by a sequence of pseudo-ops |
49 | from .def and .endef. */ | |
50 | static symbolS *def_symbol_in_progress; | |
977cdf5a NC |
51 | #ifdef TE_PE |
52 | /* PE weak alternate symbols begin with this string. */ | |
53 | static const char weak_altprefix[] = ".weak."; | |
54 | #endif /* TE_PE */ | |
8d28c9d7 AM |
55 | |
56 | typedef struct | |
57 | { | |
58 | unsigned long chunk_size; | |
59 | unsigned long element_size; | |
60 | unsigned long size; | |
61 | char *data; | |
62 | unsigned long pointer; | |
63 | } | |
64 | stack; | |
65 | ||
252b5132 | 66 | \f |
a5324a3e | 67 | /* Stack stuff. */ |
252b5132 RH |
68 | |
69 | static stack * | |
a5324a3e NC |
70 | stack_init (unsigned long chunk_size, |
71 | unsigned long element_size) | |
252b5132 RH |
72 | { |
73 | stack *st; | |
74 | ||
a5324a3e | 75 | st = malloc (sizeof (* st)); |
252b5132 | 76 | if (!st) |
a5324a3e | 77 | return NULL; |
252b5132 RH |
78 | st->data = malloc (chunk_size); |
79 | if (!st->data) | |
80 | { | |
81 | free (st); | |
a5324a3e | 82 | return NULL; |
252b5132 RH |
83 | } |
84 | st->pointer = 0; | |
85 | st->size = chunk_size; | |
86 | st->chunk_size = chunk_size; | |
87 | st->element_size = element_size; | |
88 | return st; | |
89 | } | |
90 | ||
252b5132 | 91 | static char * |
a5324a3e | 92 | stack_push (stack *st, char *element) |
252b5132 RH |
93 | { |
94 | if (st->pointer + st->element_size >= st->size) | |
95 | { | |
96 | st->size += st->chunk_size; | |
a5324a3e NC |
97 | if ((st->data = xrealloc (st->data, st->size)) == NULL) |
98 | return NULL; | |
252b5132 RH |
99 | } |
100 | memcpy (st->data + st->pointer, element, st->element_size); | |
101 | st->pointer += st->element_size; | |
102 | return st->data + st->pointer; | |
103 | } | |
104 | ||
105 | static char * | |
a5324a3e | 106 | stack_pop (stack *st) |
252b5132 RH |
107 | { |
108 | if (st->pointer < st->element_size) | |
109 | { | |
110 | st->pointer = 0; | |
a5324a3e | 111 | return NULL; |
252b5132 RH |
112 | } |
113 | st->pointer -= st->element_size; | |
114 | return st->data + st->pointer; | |
115 | } | |
116 | \f | |
a5324a3e | 117 | /* Maintain a list of the tagnames of the structures. */ |
252b5132 RH |
118 | |
119 | static struct hash_control *tag_hash; | |
120 | ||
121 | static void | |
a5324a3e | 122 | tag_init (void) |
252b5132 RH |
123 | { |
124 | tag_hash = hash_new (); | |
125 | } | |
126 | ||
127 | static void | |
a5324a3e | 128 | tag_insert (const char *name, symbolS *symbolP) |
252b5132 RH |
129 | { |
130 | const char *error_string; | |
131 | ||
132 | if ((error_string = hash_jam (tag_hash, name, (char *) symbolP))) | |
a5324a3e NC |
133 | as_fatal (_("Inserting \"%s\" into structure table failed: %s"), |
134 | name, error_string); | |
252b5132 RH |
135 | } |
136 | ||
137 | static symbolS * | |
a5324a3e | 138 | tag_find (char *name) |
252b5132 | 139 | { |
252b5132 RH |
140 | return (symbolS *) hash_find (tag_hash, name); |
141 | } | |
142 | ||
143 | static symbolS * | |
a5324a3e | 144 | tag_find_or_make (char *name) |
252b5132 RH |
145 | { |
146 | symbolS *symbolP; | |
147 | ||
148 | if ((symbolP = tag_find (name)) == NULL) | |
149 | { | |
150 | symbolP = symbol_new (name, undefined_section, | |
151 | 0, &zero_address_frag); | |
152 | ||
153 | tag_insert (S_GET_NAME (symbolP), symbolP); | |
252b5132 | 154 | symbol_table_insert (symbolP); |
a5324a3e | 155 | } |
252b5132 RH |
156 | |
157 | return symbolP; | |
158 | } | |
159 | ||
160 | /* We accept the .bss directive to set the section for backward | |
161 | compatibility with earlier versions of gas. */ | |
162 | ||
163 | static void | |
a5324a3e | 164 | obj_coff_bss (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
165 | { |
166 | if (*input_line_pointer == '\n') | |
167 | subseg_new (".bss", get_absolute_expression ()); | |
168 | else | |
169 | s_lcomm (0); | |
170 | } | |
171 | ||
252b5132 | 172 | #define GET_FILENAME_STRING(X) \ |
a5324a3e | 173 | ((char *) (&((X)->sy_symbol.ost_auxent->x_file.x_n.x_offset))[1]) |
252b5132 RH |
174 | |
175 | /* @@ Ick. */ | |
176 | static segT | |
a5324a3e | 177 | fetch_coff_debug_section (void) |
252b5132 RH |
178 | { |
179 | static segT debug_section; | |
a5324a3e | 180 | |
252b5132 RH |
181 | if (!debug_section) |
182 | { | |
5a38dc70 | 183 | const asymbol *s; |
a5324a3e NC |
184 | |
185 | s = bfd_make_debug_symbol (stdoutput, NULL, 0); | |
252b5132 RH |
186 | assert (s != 0); |
187 | debug_section = s->section; | |
188 | } | |
189 | return debug_section; | |
190 | } | |
191 | ||
192 | void | |
a5324a3e | 193 | SA_SET_SYM_ENDNDX (symbolS *sym, symbolS *val) |
252b5132 RH |
194 | { |
195 | combined_entry_type *entry, *p; | |
196 | ||
49309057 ILT |
197 | entry = &coffsymbol (symbol_get_bfdsym (sym))->native[1]; |
198 | p = coffsymbol (symbol_get_bfdsym (val))->native; | |
252b5132 RH |
199 | entry->u.auxent.x_sym.x_fcnary.x_fcn.x_endndx.p = p; |
200 | entry->fix_end = 1; | |
201 | } | |
202 | ||
203 | static void | |
a5324a3e | 204 | SA_SET_SYM_TAGNDX (symbolS *sym, symbolS *val) |
252b5132 RH |
205 | { |
206 | combined_entry_type *entry, *p; | |
207 | ||
49309057 ILT |
208 | entry = &coffsymbol (symbol_get_bfdsym (sym))->native[1]; |
209 | p = coffsymbol (symbol_get_bfdsym (val))->native; | |
252b5132 RH |
210 | entry->u.auxent.x_sym.x_tagndx.p = p; |
211 | entry->fix_tag = 1; | |
212 | } | |
213 | ||
214 | static int | |
a5324a3e | 215 | S_GET_DATA_TYPE (symbolS *sym) |
252b5132 | 216 | { |
49309057 | 217 | return coffsymbol (symbol_get_bfdsym (sym))->native->u.syment.n_type; |
252b5132 RH |
218 | } |
219 | ||
220 | int | |
a5324a3e | 221 | S_SET_DATA_TYPE (symbolS *sym, int val) |
252b5132 | 222 | { |
49309057 | 223 | coffsymbol (symbol_get_bfdsym (sym))->native->u.syment.n_type = val; |
252b5132 RH |
224 | return val; |
225 | } | |
226 | ||
227 | int | |
a5324a3e | 228 | S_GET_STORAGE_CLASS (symbolS *sym) |
252b5132 | 229 | { |
49309057 | 230 | return coffsymbol (symbol_get_bfdsym (sym))->native->u.syment.n_sclass; |
252b5132 RH |
231 | } |
232 | ||
233 | int | |
a5324a3e | 234 | S_SET_STORAGE_CLASS (symbolS *sym, int val) |
252b5132 | 235 | { |
49309057 | 236 | coffsymbol (symbol_get_bfdsym (sym))->native->u.syment.n_sclass = val; |
252b5132 RH |
237 | return val; |
238 | } | |
239 | ||
dcd619be | 240 | /* Merge a debug symbol containing debug information into a normal symbol. */ |
252b5132 | 241 | |
a5324a3e NC |
242 | static void |
243 | c_symbol_merge (symbolS *debug, symbolS *normal) | |
252b5132 RH |
244 | { |
245 | S_SET_DATA_TYPE (normal, S_GET_DATA_TYPE (debug)); | |
246 | S_SET_STORAGE_CLASS (normal, S_GET_STORAGE_CLASS (debug)); | |
247 | ||
248 | if (S_GET_NUMBER_AUXILIARY (debug) > S_GET_NUMBER_AUXILIARY (normal)) | |
a5324a3e NC |
249 | /* Take the most we have. */ |
250 | S_SET_NUMBER_AUXILIARY (normal, S_GET_NUMBER_AUXILIARY (debug)); | |
252b5132 RH |
251 | |
252 | if (S_GET_NUMBER_AUXILIARY (debug) > 0) | |
a5324a3e NC |
253 | /* Move all the auxiliary information. */ |
254 | memcpy (SYM_AUXINFO (normal), SYM_AUXINFO (debug), | |
255 | (S_GET_NUMBER_AUXILIARY (debug) | |
256 | * sizeof (*SYM_AUXINFO (debug)))); | |
252b5132 | 257 | |
dcd619be | 258 | /* Move the debug flags. */ |
252b5132 RH |
259 | SF_SET_DEBUG_FIELD (normal, SF_GET_DEBUG_FIELD (debug)); |
260 | } | |
261 | ||
262 | void | |
a4528eeb | 263 | c_dot_file_symbol (const char *filename, int appfile ATTRIBUTE_UNUSED) |
252b5132 RH |
264 | { |
265 | symbolS *symbolP; | |
266 | ||
0561a208 ILT |
267 | /* BFD converts filename to a .file symbol with an aux entry. It |
268 | also handles chaining. */ | |
252b5132 RH |
269 | symbolP = symbol_new (filename, bfd_abs_section_ptr, 0, &zero_address_frag); |
270 | ||
271 | S_SET_STORAGE_CLASS (symbolP, C_FILE); | |
272 | S_SET_NUMBER_AUXILIARY (symbolP, 1); | |
273 | ||
49309057 | 274 | symbol_get_bfdsym (symbolP)->flags = BSF_DEBUGGING; |
252b5132 RH |
275 | |
276 | #ifndef NO_LISTING | |
277 | { | |
278 | extern int listing; | |
a5324a3e | 279 | |
252b5132 | 280 | if (listing) |
a5324a3e | 281 | listing_source_file (filename); |
252b5132 RH |
282 | } |
283 | #endif | |
284 | ||
a5324a3e | 285 | /* Make sure that the symbol is first on the symbol chain. */ |
252b5132 RH |
286 | if (symbol_rootP != symbolP) |
287 | { | |
288 | symbol_remove (symbolP, &symbol_rootP, &symbol_lastP); | |
289 | symbol_insert (symbolP, symbol_rootP, &symbol_rootP, &symbol_lastP); | |
a5324a3e | 290 | } |
252b5132 RH |
291 | } |
292 | ||
a5324a3e | 293 | /* Line number handling. */ |
252b5132 | 294 | |
a5324a3e NC |
295 | struct line_no |
296 | { | |
252b5132 RH |
297 | struct line_no *next; |
298 | fragS *frag; | |
299 | alent l; | |
300 | }; | |
301 | ||
302 | int coff_line_base; | |
303 | ||
304 | /* Symbol of last function, which we should hang line#s off of. */ | |
305 | static symbolS *line_fsym; | |
306 | ||
307 | #define in_function() (line_fsym != 0) | |
308 | #define clear_function() (line_fsym = 0) | |
309 | #define set_function(F) (line_fsym = (F), coff_add_linesym (F)) | |
310 | ||
311 | \f | |
312 | void | |
a5324a3e | 313 | coff_obj_symbol_new_hook (symbolS *symbolP) |
252b5132 RH |
314 | { |
315 | long sz = (OBJ_COFF_MAX_AUXENTRIES + 1) * sizeof (combined_entry_type); | |
a5324a3e | 316 | char * s = xmalloc (sz); |
dcd619be | 317 | |
252b5132 | 318 | memset (s, 0, sz); |
49309057 | 319 | coffsymbol (symbol_get_bfdsym (symbolP))->native = (combined_entry_type *) s; |
252b5132 RH |
320 | |
321 | S_SET_DATA_TYPE (symbolP, T_NULL); | |
322 | S_SET_STORAGE_CLASS (symbolP, 0); | |
323 | S_SET_NUMBER_AUXILIARY (symbolP, 0); | |
324 | ||
325 | if (S_IS_STRING (symbolP)) | |
326 | SF_SET_STRING (symbolP); | |
dcd619be | 327 | |
252b5132 RH |
328 | if (S_IS_LOCAL (symbolP)) |
329 | SF_SET_LOCAL (symbolP); | |
330 | } | |
331 | ||
6a2b6326 JB |
332 | void |
333 | coff_obj_symbol_clone_hook (symbolS *newsymP, symbolS *orgsymP) | |
334 | { | |
335 | long sz = (OBJ_COFF_MAX_AUXENTRIES + 1) * sizeof (combined_entry_type); | |
336 | combined_entry_type * s = xmalloc (sz); | |
337 | ||
338 | memcpy (s, coffsymbol (symbol_get_bfdsym (orgsymP))->native, sz); | |
339 | coffsymbol (symbol_get_bfdsym (newsymP))->native = s; | |
340 | ||
341 | SF_SET (newsymP, SF_GET (orgsymP)); | |
342 | } | |
343 | ||
252b5132 | 344 | \f |
a5324a3e | 345 | /* Handle .ln directives. */ |
252b5132 RH |
346 | |
347 | static symbolS *current_lineno_sym; | |
348 | static struct line_no *line_nos; | |
a5324a3e | 349 | /* FIXME: Blindly assume all .ln directives will be in the .text section. */ |
252b5132 RH |
350 | int coff_n_line_nos; |
351 | ||
352 | static void | |
a5324a3e | 353 | add_lineno (fragS * frag, addressT offset, int num) |
252b5132 | 354 | { |
a5324a3e NC |
355 | struct line_no * new_line = xmalloc (sizeof (* new_line)); |
356 | ||
252b5132 | 357 | if (!current_lineno_sym) |
a5324a3e | 358 | abort (); |
6877bb43 TR |
359 | |
360 | #ifndef OBJ_XCOFF | |
a5324a3e | 361 | /* The native aix assembler accepts negative line number. */ |
6877bb43 | 362 | |
dcd619be | 363 | if (num <= 0) |
e8a3ab75 ILT |
364 | { |
365 | /* Zero is used as an end marker in the file. */ | |
b985eaa8 ILT |
366 | as_warn (_("Line numbers must be positive integers\n")); |
367 | num = 1; | |
e8a3ab75 | 368 | } |
6877bb43 | 369 | #endif /* OBJ_XCOFF */ |
252b5132 RH |
370 | new_line->next = line_nos; |
371 | new_line->frag = frag; | |
372 | new_line->l.line_number = num; | |
373 | new_line->l.u.offset = offset; | |
374 | line_nos = new_line; | |
375 | coff_n_line_nos++; | |
376 | } | |
377 | ||
378 | void | |
a5324a3e | 379 | coff_add_linesym (symbolS *sym) |
252b5132 RH |
380 | { |
381 | if (line_nos) | |
382 | { | |
49309057 ILT |
383 | coffsymbol (symbol_get_bfdsym (current_lineno_sym))->lineno = |
384 | (alent *) line_nos; | |
252b5132 RH |
385 | coff_n_line_nos++; |
386 | line_nos = 0; | |
387 | } | |
388 | current_lineno_sym = sym; | |
389 | } | |
390 | ||
391 | static void | |
a5324a3e | 392 | obj_coff_ln (int appline) |
252b5132 RH |
393 | { |
394 | int l; | |
395 | ||
396 | if (! appline && def_symbol_in_progress != NULL) | |
397 | { | |
398 | as_warn (_(".ln pseudo-op inside .def/.endef: ignored.")); | |
399 | demand_empty_rest_of_line (); | |
400 | return; | |
401 | } | |
402 | ||
403 | l = get_absolute_expression (); | |
252b5132 | 404 | |
e237d851 NC |
405 | /* If there is no lineno symbol, treat a .ln |
406 | directive as if it were a .appline directive. */ | |
407 | if (appline || current_lineno_sym == NULL) | |
252b5132 | 408 | new_logical_line ((char *) NULL, l - 1); |
e237d851 NC |
409 | else |
410 | add_lineno (frag_now, frag_now_fix (), l); | |
252b5132 RH |
411 | |
412 | #ifndef NO_LISTING | |
413 | { | |
414 | extern int listing; | |
415 | ||
416 | if (listing) | |
417 | { | |
418 | if (! appline) | |
419 | l += coff_line_base - 1; | |
420 | listing_source_line (l); | |
421 | } | |
422 | } | |
423 | #endif | |
424 | ||
425 | demand_empty_rest_of_line (); | |
426 | } | |
427 | ||
28428223 ILT |
428 | /* .loc is essentially the same as .ln; parse it for assembler |
429 | compatibility. */ | |
430 | ||
431 | static void | |
a5324a3e | 432 | obj_coff_loc (int ignore ATTRIBUTE_UNUSED) |
28428223 ILT |
433 | { |
434 | int lineno; | |
435 | ||
436 | /* FIXME: Why do we need this check? We need it for ECOFF, but why | |
437 | do we need it for COFF? */ | |
438 | if (now_seg != text_section) | |
439 | { | |
440 | as_warn (_(".loc outside of .text")); | |
441 | demand_empty_rest_of_line (); | |
442 | return; | |
443 | } | |
444 | ||
445 | if (def_symbol_in_progress != NULL) | |
446 | { | |
447 | as_warn (_(".loc pseudo-op inside .def/.endef: ignored.")); | |
448 | demand_empty_rest_of_line (); | |
449 | return; | |
450 | } | |
451 | ||
452 | /* Skip the file number. */ | |
453 | SKIP_WHITESPACE (); | |
454 | get_absolute_expression (); | |
455 | SKIP_WHITESPACE (); | |
456 | ||
457 | lineno = get_absolute_expression (); | |
458 | ||
459 | #ifndef NO_LISTING | |
460 | { | |
461 | extern int listing; | |
462 | ||
463 | if (listing) | |
464 | { | |
cc8a6dd0 | 465 | lineno += coff_line_base - 1; |
28428223 ILT |
466 | listing_source_line (lineno); |
467 | } | |
468 | } | |
469 | #endif | |
470 | ||
471 | demand_empty_rest_of_line (); | |
472 | ||
473 | add_lineno (frag_now, frag_now_fix (), lineno); | |
474 | } | |
475 | ||
7a6284c4 ILT |
476 | /* Handle the .ident pseudo-op. */ |
477 | ||
478 | static void | |
a5324a3e | 479 | obj_coff_ident (int ignore ATTRIBUTE_UNUSED) |
7a6284c4 ILT |
480 | { |
481 | segT current_seg = now_seg; | |
482 | subsegT current_subseg = now_subseg; | |
483 | ||
484 | #ifdef TE_PE | |
485 | { | |
486 | segT sec; | |
487 | ||
488 | /* We could put it in .comment, but that creates an extra section | |
489 | that shouldn't be loaded into memory, which requires linker | |
490 | changes... For now, until proven otherwise, use .rdata. */ | |
491 | sec = subseg_new (".rdata$zzz", 0); | |
492 | bfd_set_section_flags (stdoutput, sec, | |
493 | ((SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_DATA) | |
494 | & bfd_applicable_section_flags (stdoutput))); | |
495 | } | |
496 | #else | |
497 | subseg_new (".comment", 0); | |
498 | #endif | |
499 | ||
500 | stringer (1); | |
501 | subseg_set (current_seg, current_subseg); | |
502 | } | |
503 | ||
a5324a3e NC |
504 | /* Handle .def directives. |
505 | ||
506 | One might ask : why can't we symbol_new if the symbol does not | |
507 | already exist and fill it with debug information. Because of | |
508 | the C_EFCN special symbol. It would clobber the value of the | |
509 | function symbol before we have a chance to notice that it is | |
510 | a C_EFCN. And a second reason is that the code is more clear this | |
511 | way. (at least I think it is :-). */ | |
252b5132 RH |
512 | |
513 | #define SKIP_SEMI_COLON() while (*input_line_pointer++ != ';') | |
514 | #define SKIP_WHITESPACES() while (*input_line_pointer == ' ' || \ | |
a5324a3e NC |
515 | *input_line_pointer == '\t') \ |
516 | input_line_pointer++; | |
252b5132 RH |
517 | |
518 | static void | |
a5324a3e | 519 | obj_coff_def (int what ATTRIBUTE_UNUSED) |
252b5132 | 520 | { |
a5324a3e NC |
521 | char name_end; /* Char after the end of name. */ |
522 | char *symbol_name; /* Name of the debug symbol. */ | |
523 | char *symbol_name_copy; /* Temporary copy of the name. */ | |
252b5132 RH |
524 | unsigned int symbol_name_length; |
525 | ||
526 | if (def_symbol_in_progress != NULL) | |
527 | { | |
528 | as_warn (_(".def pseudo-op used inside of .def/.endef: ignored.")); | |
529 | demand_empty_rest_of_line (); | |
530 | return; | |
a5324a3e | 531 | } |
252b5132 RH |
532 | |
533 | SKIP_WHITESPACES (); | |
534 | ||
535 | symbol_name = input_line_pointer; | |
252b5132 RH |
536 | name_end = get_symbol_end (); |
537 | symbol_name_length = strlen (symbol_name); | |
538 | symbol_name_copy = xmalloc (symbol_name_length + 1); | |
539 | strcpy (symbol_name_copy, symbol_name); | |
540 | #ifdef tc_canonicalize_symbol_name | |
541 | symbol_name_copy = tc_canonicalize_symbol_name (symbol_name_copy); | |
542 | #endif | |
543 | ||
a5324a3e | 544 | /* Initialize the new symbol. */ |
252b5132 | 545 | def_symbol_in_progress = symbol_make (symbol_name_copy); |
49309057 | 546 | symbol_set_frag (def_symbol_in_progress, &zero_address_frag); |
252b5132 RH |
547 | S_SET_VALUE (def_symbol_in_progress, 0); |
548 | ||
549 | if (S_IS_STRING (def_symbol_in_progress)) | |
550 | SF_SET_STRING (def_symbol_in_progress); | |
551 | ||
552 | *input_line_pointer = name_end; | |
553 | ||
554 | demand_empty_rest_of_line (); | |
555 | } | |
556 | ||
557 | unsigned int dim_index; | |
558 | ||
559 | static void | |
a5324a3e | 560 | obj_coff_endef (int ignore ATTRIBUTE_UNUSED) |
252b5132 | 561 | { |
c9900432 | 562 | symbolS *symbolP = NULL; |
252b5132 | 563 | |
252b5132 RH |
564 | dim_index = 0; |
565 | if (def_symbol_in_progress == NULL) | |
566 | { | |
567 | as_warn (_(".endef pseudo-op used outside of .def/.endef: ignored.")); | |
568 | demand_empty_rest_of_line (); | |
569 | return; | |
a5324a3e | 570 | } |
252b5132 | 571 | |
dcd619be | 572 | /* Set the section number according to storage class. */ |
252b5132 RH |
573 | switch (S_GET_STORAGE_CLASS (def_symbol_in_progress)) |
574 | { | |
575 | case C_STRTAG: | |
576 | case C_ENTAG: | |
577 | case C_UNTAG: | |
578 | SF_SET_TAG (def_symbol_in_progress); | |
a5324a3e | 579 | /* Fall through. */ |
252b5132 RH |
580 | case C_FILE: |
581 | case C_TPDEF: | |
582 | SF_SET_DEBUG (def_symbol_in_progress); | |
583 | S_SET_SEGMENT (def_symbol_in_progress, fetch_coff_debug_section ()); | |
584 | break; | |
585 | ||
586 | case C_EFCN: | |
dcd619be | 587 | SF_SET_LOCAL (def_symbol_in_progress); /* Do not emit this symbol. */ |
a5324a3e | 588 | /* Fall through. */ |
252b5132 | 589 | case C_BLOCK: |
a5324a3e NC |
590 | SF_SET_PROCESS (def_symbol_in_progress); /* Will need processing before writing. */ |
591 | /* Fall through. */ | |
252b5132 RH |
592 | case C_FCN: |
593 | { | |
5a38dc70 | 594 | const char *name; |
a5324a3e | 595 | |
252b5132 RH |
596 | S_SET_SEGMENT (def_symbol_in_progress, text_section); |
597 | ||
49309057 | 598 | name = S_GET_NAME (def_symbol_in_progress); |
23dab925 | 599 | if (name[0] == '.' && name[2] == 'f' && name[3] == '\0') |
cc8a6dd0 | 600 | { |
23dab925 ILT |
601 | switch (name[1]) |
602 | { | |
dcd619be | 603 | case 'b': |
23dab925 ILT |
604 | /* .bf */ |
605 | if (! in_function ()) | |
606 | as_warn (_("`%s' symbol without preceding function"), name); | |
607 | /* Will need relocating. */ | |
608 | SF_SET_PROCESS (def_symbol_in_progress); | |
609 | clear_function (); | |
610 | break; | |
611 | #ifdef TE_PE | |
dcd619be | 612 | case 'e': |
23dab925 ILT |
613 | /* .ef */ |
614 | /* The MS compilers output the actual endline, not the | |
615 | function-relative one... we want to match without | |
616 | changing the assembler input. */ | |
dcd619be | 617 | SA_SET_SYM_LNNO (def_symbol_in_progress, |
23dab925 ILT |
618 | (SA_GET_SYM_LNNO (def_symbol_in_progress) |
619 | + coff_line_base)); | |
620 | break; | |
621 | #endif | |
622 | } | |
252b5132 RH |
623 | } |
624 | } | |
625 | break; | |
626 | ||
627 | #ifdef C_AUTOARG | |
628 | case C_AUTOARG: | |
629 | #endif /* C_AUTOARG */ | |
630 | case C_AUTO: | |
631 | case C_REG: | |
632 | case C_ARG: | |
633 | case C_REGPARM: | |
634 | case C_FIELD: | |
56385375 L |
635 | |
636 | /* According to the COFF documentation: | |
637 | ||
638 | http://osr5doc.sco.com:1996/topics/COFF_SectNumFld.html | |
639 | ||
640 | A special section number (-2) marks symbolic debugging symbols, | |
641 | including structure/union/enumeration tag names, typedefs, and | |
dcd619be | 642 | the name of the file. A section number of -1 indicates that the |
56385375 | 643 | symbol has a value but is not relocatable. Examples of |
dcd619be KH |
644 | absolute-valued symbols include automatic and register variables, |
645 | function arguments, and .eos symbols. | |
56385375 L |
646 | |
647 | But from Ian Lance Taylor: | |
648 | ||
649 | http://sources.redhat.com/ml/binutils/2000-08/msg00202.html | |
650 | ||
651 | the actual tools all marked them as section -1. So the GNU COFF | |
652 | assembler follows historical COFF assemblers. | |
653 | ||
654 | However, it causes problems for djgpp | |
655 | ||
656 | http://sources.redhat.com/ml/binutils/2000-08/msg00210.html | |
657 | ||
658 | By defining STRICTCOFF, a COFF port can make the assembler to | |
dcd619be | 659 | follow the documented behavior. */ |
56385375 | 660 | #ifdef STRICTCOFF |
252b5132 RH |
661 | case C_MOS: |
662 | case C_MOE: | |
663 | case C_MOU: | |
664 | case C_EOS: | |
56385375 | 665 | #endif |
d1d8ba22 | 666 | SF_SET_DEBUG (def_symbol_in_progress); |
252b5132 RH |
667 | S_SET_SEGMENT (def_symbol_in_progress, absolute_section); |
668 | break; | |
669 | ||
56385375 L |
670 | #ifndef STRICTCOFF |
671 | case C_MOS: | |
672 | case C_MOE: | |
673 | case C_MOU: | |
674 | case C_EOS: | |
675 | S_SET_SEGMENT (def_symbol_in_progress, absolute_section); | |
676 | break; | |
677 | #endif | |
678 | ||
252b5132 RH |
679 | case C_EXT: |
680 | case C_WEAKEXT: | |
681 | #ifdef TE_PE | |
682 | case C_NT_WEAK: | |
683 | #endif | |
684 | case C_STAT: | |
685 | case C_LABEL: | |
a5324a3e | 686 | /* Valid but set somewhere else (s_comm, s_lcomm, colon). */ |
252b5132 RH |
687 | break; |
688 | ||
689 | default: | |
690 | case C_USTATIC: | |
691 | case C_EXTDEF: | |
692 | case C_ULABEL: | |
693 | as_warn (_("unexpected storage class %d"), | |
694 | S_GET_STORAGE_CLASS (def_symbol_in_progress)); | |
695 | break; | |
a5324a3e | 696 | } |
252b5132 RH |
697 | |
698 | /* Now that we have built a debug symbol, try to find if we should | |
699 | merge with an existing symbol or not. If a symbol is C_EFCN or | |
9690c54d ILT |
700 | absolute_section or untagged SEG_DEBUG it never merges. We also |
701 | don't merge labels, which are in a different namespace, nor | |
702 | symbols which have not yet been defined since they are typically | |
703 | unique, nor do we merge tags with non-tags. */ | |
252b5132 RH |
704 | |
705 | /* Two cases for functions. Either debug followed by definition or | |
706 | definition followed by debug. For definition first, we will | |
707 | merge the debug symbol into the definition. For debug first, the | |
708 | lineno entry MUST point to the definition function or else it | |
709 | will point off into space when obj_crawl_symbol_chain() merges | |
710 | the debug symbol into the real symbol. Therefor, let's presume | |
dcd619be | 711 | the debug symbol is a real function reference. */ |
252b5132 RH |
712 | |
713 | /* FIXME-SOON If for some reason the definition label/symbol is | |
714 | never seen, this will probably leave an undefined symbol at link | |
dcd619be | 715 | time. */ |
252b5132 RH |
716 | |
717 | if (S_GET_STORAGE_CLASS (def_symbol_in_progress) == C_EFCN | |
9690c54d | 718 | || S_GET_STORAGE_CLASS (def_symbol_in_progress) == C_LABEL |
a5324a3e NC |
719 | || (streq (bfd_get_section_name (stdoutput, |
720 | S_GET_SEGMENT (def_symbol_in_progress)), | |
721 | "*DEBUG*") | |
252b5132 RH |
722 | && !SF_GET_TAG (def_symbol_in_progress)) |
723 | || S_GET_SEGMENT (def_symbol_in_progress) == absolute_section | |
9690c54d | 724 | || ! symbol_constant_p (def_symbol_in_progress) |
91c4c449 | 725 | || (symbolP = symbol_find (S_GET_NAME (def_symbol_in_progress))) == NULL |
9690c54d | 726 | || SF_GET_TAG (def_symbol_in_progress) != SF_GET_TAG (symbolP)) |
252b5132 | 727 | { |
9690c54d | 728 | /* If it already is at the end of the symbol list, do nothing */ |
252b5132 | 729 | if (def_symbol_in_progress != symbol_lastP) |
cc8a6dd0 | 730 | { |
9690c54d ILT |
731 | symbol_remove (def_symbol_in_progress, &symbol_rootP, &symbol_lastP); |
732 | symbol_append (def_symbol_in_progress, symbol_lastP, &symbol_rootP, | |
733 | &symbol_lastP); | |
cc8a6dd0 | 734 | } |
252b5132 RH |
735 | } |
736 | else | |
737 | { | |
738 | /* This symbol already exists, merge the newly created symbol | |
739 | into the old one. This is not mandatory. The linker can | |
740 | handle duplicate symbols correctly. But I guess that it save | |
741 | a *lot* of space if the assembly file defines a lot of | |
a5324a3e | 742 | symbols. [loic] */ |
252b5132 RH |
743 | |
744 | /* The debug entry (def_symbol_in_progress) is merged into the | |
dcd619be | 745 | previous definition. */ |
252b5132 RH |
746 | |
747 | c_symbol_merge (def_symbol_in_progress, symbolP); | |
748 | symbol_remove (def_symbol_in_progress, &symbol_rootP, &symbol_lastP); | |
749 | ||
750 | def_symbol_in_progress = symbolP; | |
751 | ||
752 | if (SF_GET_FUNCTION (def_symbol_in_progress) | |
753 | || SF_GET_TAG (def_symbol_in_progress) | |
754 | || S_GET_STORAGE_CLASS (def_symbol_in_progress) == C_STAT) | |
755 | { | |
756 | /* For functions, and tags, and static symbols, the symbol | |
757 | *must* be where the debug symbol appears. Move the | |
dcd619be | 758 | existing symbol to the current place. */ |
a5324a3e | 759 | /* If it already is at the end of the symbol list, do nothing. */ |
252b5132 RH |
760 | if (def_symbol_in_progress != symbol_lastP) |
761 | { | |
762 | symbol_remove (def_symbol_in_progress, &symbol_rootP, &symbol_lastP); | |
763 | symbol_append (def_symbol_in_progress, symbol_lastP, &symbol_rootP, &symbol_lastP); | |
764 | } | |
765 | } | |
766 | } | |
767 | ||
768 | if (SF_GET_TAG (def_symbol_in_progress)) | |
769 | { | |
770 | symbolS *oldtag; | |
771 | ||
91c4c449 | 772 | oldtag = symbol_find (S_GET_NAME (def_symbol_in_progress)); |
252b5132 RH |
773 | if (oldtag == NULL || ! SF_GET_TAG (oldtag)) |
774 | tag_insert (S_GET_NAME (def_symbol_in_progress), | |
775 | def_symbol_in_progress); | |
776 | } | |
777 | ||
778 | if (SF_GET_FUNCTION (def_symbol_in_progress)) | |
779 | { | |
780 | know (sizeof (def_symbol_in_progress) <= sizeof (long)); | |
781 | set_function (def_symbol_in_progress); | |
782 | SF_SET_PROCESS (def_symbol_in_progress); | |
783 | ||
784 | if (symbolP == NULL) | |
a5324a3e NC |
785 | /* That is, if this is the first time we've seen the |
786 | function. */ | |
787 | symbol_table_insert (def_symbol_in_progress); | |
788 | ||
789 | } | |
252b5132 RH |
790 | |
791 | def_symbol_in_progress = NULL; | |
792 | demand_empty_rest_of_line (); | |
793 | } | |
794 | ||
795 | static void | |
a5324a3e | 796 | obj_coff_dim (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
797 | { |
798 | int dim_index; | |
799 | ||
800 | if (def_symbol_in_progress == NULL) | |
801 | { | |
802 | as_warn (_(".dim pseudo-op used outside of .def/.endef: ignored.")); | |
803 | demand_empty_rest_of_line (); | |
804 | return; | |
a5324a3e | 805 | } |
252b5132 RH |
806 | |
807 | S_SET_NUMBER_AUXILIARY (def_symbol_in_progress, 1); | |
808 | ||
809 | for (dim_index = 0; dim_index < DIMNUM; dim_index++) | |
810 | { | |
811 | SKIP_WHITESPACES (); | |
812 | SA_SET_SYM_DIMEN (def_symbol_in_progress, dim_index, | |
813 | get_absolute_expression ()); | |
814 | ||
815 | switch (*input_line_pointer) | |
816 | { | |
817 | case ',': | |
818 | input_line_pointer++; | |
819 | break; | |
820 | ||
821 | default: | |
822 | as_warn (_("badly formed .dim directive ignored")); | |
a5324a3e | 823 | /* Fall through. */ |
252b5132 RH |
824 | case '\n': |
825 | case ';': | |
826 | dim_index = DIMNUM; | |
827 | break; | |
828 | } | |
829 | } | |
830 | ||
831 | demand_empty_rest_of_line (); | |
832 | } | |
833 | ||
834 | static void | |
a5324a3e | 835 | obj_coff_line (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
836 | { |
837 | int this_base; | |
838 | ||
839 | if (def_symbol_in_progress == NULL) | |
840 | { | |
841 | /* Probably stabs-style line? */ | |
842 | obj_coff_ln (0); | |
843 | return; | |
844 | } | |
845 | ||
846 | this_base = get_absolute_expression (); | |
a5324a3e | 847 | if (streq (".bf", S_GET_NAME (def_symbol_in_progress))) |
252b5132 RH |
848 | coff_line_base = this_base; |
849 | ||
850 | S_SET_NUMBER_AUXILIARY (def_symbol_in_progress, 1); | |
23dab925 | 851 | SA_SET_SYM_LNNO (def_symbol_in_progress, this_base); |
252b5132 RH |
852 | |
853 | demand_empty_rest_of_line (); | |
854 | ||
855 | #ifndef NO_LISTING | |
a5324a3e | 856 | if (streq (".bf", S_GET_NAME (def_symbol_in_progress))) |
252b5132 RH |
857 | { |
858 | extern int listing; | |
859 | ||
860 | if (listing) | |
23dab925 | 861 | listing_source_line ((unsigned int) this_base); |
252b5132 RH |
862 | } |
863 | #endif | |
864 | } | |
865 | ||
866 | static void | |
a5324a3e | 867 | obj_coff_size (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
868 | { |
869 | if (def_symbol_in_progress == NULL) | |
870 | { | |
871 | as_warn (_(".size pseudo-op used outside of .def/.endef ignored.")); | |
872 | demand_empty_rest_of_line (); | |
873 | return; | |
a5324a3e | 874 | } |
252b5132 RH |
875 | |
876 | S_SET_NUMBER_AUXILIARY (def_symbol_in_progress, 1); | |
877 | SA_SET_SYM_SIZE (def_symbol_in_progress, get_absolute_expression ()); | |
878 | demand_empty_rest_of_line (); | |
879 | } | |
880 | ||
881 | static void | |
a5324a3e | 882 | obj_coff_scl (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
883 | { |
884 | if (def_symbol_in_progress == NULL) | |
885 | { | |
886 | as_warn (_(".scl pseudo-op used outside of .def/.endef ignored.")); | |
887 | demand_empty_rest_of_line (); | |
888 | return; | |
a5324a3e | 889 | } |
252b5132 RH |
890 | |
891 | S_SET_STORAGE_CLASS (def_symbol_in_progress, get_absolute_expression ()); | |
892 | demand_empty_rest_of_line (); | |
893 | } | |
894 | ||
895 | static void | |
a5324a3e | 896 | obj_coff_tag (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
897 | { |
898 | char *symbol_name; | |
899 | char name_end; | |
900 | ||
901 | if (def_symbol_in_progress == NULL) | |
902 | { | |
903 | as_warn (_(".tag pseudo-op used outside of .def/.endef ignored.")); | |
904 | demand_empty_rest_of_line (); | |
905 | return; | |
906 | } | |
907 | ||
908 | S_SET_NUMBER_AUXILIARY (def_symbol_in_progress, 1); | |
909 | symbol_name = input_line_pointer; | |
910 | name_end = get_symbol_end (); | |
911 | ||
912 | #ifdef tc_canonicalize_symbol_name | |
913 | symbol_name = tc_canonicalize_symbol_name (symbol_name); | |
914 | #endif | |
915 | ||
916 | /* Assume that the symbol referred to by .tag is always defined. | |
dcd619be | 917 | This was a bad assumption. I've added find_or_make. xoxorich. */ |
252b5132 RH |
918 | SA_SET_SYM_TAGNDX (def_symbol_in_progress, |
919 | tag_find_or_make (symbol_name)); | |
920 | if (SA_GET_SYM_TAGNDX (def_symbol_in_progress) == 0L) | |
a5324a3e | 921 | as_warn (_("tag not found for .tag %s"), symbol_name); |
252b5132 RH |
922 | |
923 | SF_SET_TAGGED (def_symbol_in_progress); | |
924 | *input_line_pointer = name_end; | |
925 | ||
926 | demand_empty_rest_of_line (); | |
927 | } | |
928 | ||
929 | static void | |
a5324a3e | 930 | obj_coff_type (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
931 | { |
932 | if (def_symbol_in_progress == NULL) | |
933 | { | |
934 | as_warn (_(".type pseudo-op used outside of .def/.endef ignored.")); | |
935 | demand_empty_rest_of_line (); | |
936 | return; | |
a5324a3e | 937 | } |
252b5132 RH |
938 | |
939 | S_SET_DATA_TYPE (def_symbol_in_progress, get_absolute_expression ()); | |
940 | ||
941 | if (ISFCN (S_GET_DATA_TYPE (def_symbol_in_progress)) && | |
942 | S_GET_STORAGE_CLASS (def_symbol_in_progress) != C_TPDEF) | |
a5324a3e | 943 | SF_SET_FUNCTION (def_symbol_in_progress); |
252b5132 RH |
944 | |
945 | demand_empty_rest_of_line (); | |
946 | } | |
947 | ||
948 | static void | |
a5324a3e | 949 | obj_coff_val (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
950 | { |
951 | if (def_symbol_in_progress == NULL) | |
952 | { | |
953 | as_warn (_(".val pseudo-op used outside of .def/.endef ignored.")); | |
954 | demand_empty_rest_of_line (); | |
955 | return; | |
a5324a3e | 956 | } |
252b5132 RH |
957 | |
958 | if (is_name_beginner (*input_line_pointer)) | |
959 | { | |
960 | char *symbol_name = input_line_pointer; | |
961 | char name_end = get_symbol_end (); | |
962 | ||
963 | #ifdef tc_canonicalize_symbol_name | |
964 | symbol_name = tc_canonicalize_symbol_name (symbol_name); | |
965 | #endif | |
a5324a3e | 966 | if (streq (symbol_name, ".")) |
252b5132 | 967 | { |
a5324a3e | 968 | /* If the .val is != from the .def (e.g. statics). */ |
49309057 | 969 | symbol_set_frag (def_symbol_in_progress, frag_now); |
252b5132 | 970 | S_SET_VALUE (def_symbol_in_progress, (valueT) frag_now_fix ()); |
252b5132 | 971 | } |
a5324a3e | 972 | else if (! streq (S_GET_NAME (def_symbol_in_progress), symbol_name)) |
252b5132 | 973 | { |
49309057 ILT |
974 | expressionS exp; |
975 | ||
976 | exp.X_op = O_symbol; | |
977 | exp.X_add_symbol = symbol_find_or_make (symbol_name); | |
978 | exp.X_op_symbol = NULL; | |
979 | exp.X_add_number = 0; | |
980 | symbol_set_value_expression (def_symbol_in_progress, &exp); | |
252b5132 RH |
981 | |
982 | /* If the segment is undefined when the forward reference is | |
983 | resolved, then copy the segment id from the forward | |
984 | symbol. */ | |
985 | SF_SET_GET_SEGMENT (def_symbol_in_progress); | |
0561a208 ILT |
986 | |
987 | /* FIXME: gcc can generate address expressions here in | |
988 | unusual cases (search for "obscure" in sdbout.c). We | |
989 | just ignore the offset here, thus generating incorrect | |
990 | debugging information. We ignore the rest of the line | |
991 | just below. */ | |
252b5132 | 992 | } |
0561a208 | 993 | /* Otherwise, it is the name of a non debug symbol and its value |
dcd619be | 994 | will be calculated later. */ |
252b5132 RH |
995 | *input_line_pointer = name_end; |
996 | } | |
997 | else | |
998 | { | |
999 | S_SET_VALUE (def_symbol_in_progress, get_absolute_expression ()); | |
a5324a3e | 1000 | } |
252b5132 RH |
1001 | |
1002 | demand_empty_rest_of_line (); | |
1003 | } | |
1004 | ||
977cdf5a NC |
1005 | #ifdef TE_PE |
1006 | ||
1007 | /* Return nonzero if name begins with weak alternate symbol prefix. */ | |
1008 | ||
1009 | static int | |
1010 | weak_is_altname (const char * name) | |
1011 | { | |
a5324a3e | 1012 | return strneq (name, weak_altprefix, sizeof (weak_altprefix) - 1); |
977cdf5a NC |
1013 | } |
1014 | ||
1015 | /* Return the name of the alternate symbol | |
1016 | name corresponding to a weak symbol's name. */ | |
1017 | ||
1018 | static const char * | |
1019 | weak_name2altname (const char * name) | |
1020 | { | |
1021 | char *alt_name; | |
1022 | ||
1023 | alt_name = xmalloc (sizeof (weak_altprefix) + strlen (name)); | |
1024 | strcpy (alt_name, weak_altprefix); | |
1025 | return strcat (alt_name, name); | |
1026 | } | |
1027 | ||
a5324a3e | 1028 | /* Return the name of the weak symbol corresponding to an |
708587a4 | 1029 | alternate symbol. */ |
977cdf5a NC |
1030 | |
1031 | static const char * | |
1032 | weak_altname2name (const char * name) | |
1033 | { | |
1034 | char * weak_name; | |
1035 | char * dot; | |
1036 | ||
1037 | assert (weak_is_altname (name)); | |
1038 | ||
1039 | weak_name = xstrdup (name + 6); | |
1040 | if ((dot = strchr (weak_name, '.'))) | |
1041 | *dot = 0; | |
1042 | return weak_name; | |
1043 | } | |
1044 | ||
1045 | /* Make a weak symbol name unique by | |
1046 | appending the name of an external symbol. */ | |
1047 | ||
1048 | static const char * | |
1049 | weak_uniquify (const char * name) | |
1050 | { | |
1051 | char *ret; | |
1052 | const char * unique = ""; | |
1053 | ||
1054 | #ifdef USE_UNIQUE | |
1055 | if (an_external_name != NULL) | |
1056 | unique = an_external_name; | |
1057 | #endif | |
1058 | assert (weak_is_altname (name)); | |
1059 | ||
1060 | if (strchr (name + sizeof (weak_altprefix), '.')) | |
1061 | return name; | |
1062 | ||
1063 | ret = xmalloc (strlen (name) + strlen (unique) + 2); | |
1064 | strcpy (ret, name); | |
1065 | strcat (ret, "."); | |
1066 | strcat (ret, unique); | |
1067 | return ret; | |
1068 | } | |
1069 | ||
06e77878 AO |
1070 | void |
1071 | pecoff_obj_set_weak_hook (symbolS *symbolP) | |
1072 | { | |
1073 | symbolS *alternateP; | |
1074 | ||
1075 | /* See _Microsoft Portable Executable and Common Object | |
1076 | File Format Specification_, section 5.5.3. | |
1077 | Create a symbol representing the alternate value. | |
1078 | coff_frob_symbol will set the value of this symbol from | |
1079 | the value of the weak symbol itself. */ | |
1080 | S_SET_STORAGE_CLASS (symbolP, C_NT_WEAK); | |
1081 | S_SET_NUMBER_AUXILIARY (symbolP, 1); | |
1082 | SA_SET_SYM_FSIZE (symbolP, IMAGE_WEAK_EXTERN_SEARCH_NOLIBRARY); | |
1083 | ||
1084 | alternateP = symbol_find_or_make (weak_name2altname (S_GET_NAME (symbolP))); | |
1085 | S_SET_EXTERNAL (alternateP); | |
1086 | S_SET_STORAGE_CLASS (alternateP, C_NT_WEAK); | |
1087 | ||
1088 | SA_SET_SYM_TAGNDX (symbolP, alternateP); | |
1089 | } | |
1090 | ||
1091 | void | |
1092 | pecoff_obj_clear_weak_hook (symbolS *symbolP) | |
1093 | { | |
1094 | symbolS *alternateP; | |
1095 | ||
1096 | S_SET_STORAGE_CLASS (symbolP, 0); | |
1097 | SA_SET_SYM_FSIZE (symbolP, 0); | |
1098 | ||
1099 | alternateP = symbol_find (weak_name2altname (S_GET_NAME (symbolP))); | |
1100 | S_CLEAR_EXTERNAL (alternateP); | |
1101 | } | |
1102 | ||
977cdf5a NC |
1103 | #endif /* TE_PE */ |
1104 | ||
c87db184 | 1105 | /* Handle .weak. This is a GNU extension in formats other than PE. */ |
977cdf5a | 1106 | |
c87db184 | 1107 | static void |
977cdf5a | 1108 | obj_coff_weak (int ignore ATTRIBUTE_UNUSED) |
c87db184 CF |
1109 | { |
1110 | char *name; | |
1111 | int c; | |
1112 | symbolS *symbolP; | |
1113 | ||
1114 | do | |
1115 | { | |
1116 | name = input_line_pointer; | |
1117 | c = get_symbol_end (); | |
1118 | if (*name == 0) | |
1119 | { | |
1120 | as_warn (_("badly formed .weak directive ignored")); | |
1121 | ignore_rest_of_line (); | |
1122 | return; | |
1123 | } | |
977cdf5a | 1124 | c = 0; |
c87db184 CF |
1125 | symbolP = symbol_find_or_make (name); |
1126 | *input_line_pointer = c; | |
1127 | SKIP_WHITESPACE (); | |
c87db184 | 1128 | S_SET_WEAK (symbolP); |
c87db184 | 1129 | |
c87db184 CF |
1130 | if (c == ',') |
1131 | { | |
1132 | input_line_pointer++; | |
1133 | SKIP_WHITESPACE (); | |
1134 | if (*input_line_pointer == '\n') | |
1135 | c = '\n'; | |
1136 | } | |
1137 | ||
1138 | } | |
1139 | while (c == ','); | |
1140 | ||
1141 | demand_empty_rest_of_line (); | |
1142 | } | |
1143 | ||
252b5132 | 1144 | void |
a5324a3e | 1145 | coff_obj_read_begin_hook (void) |
252b5132 | 1146 | { |
dcd619be | 1147 | /* These had better be the same. Usually 18 bytes. */ |
252b5132 RH |
1148 | know (sizeof (SYMENT) == sizeof (AUXENT)); |
1149 | know (SYMESZ == AUXESZ); | |
252b5132 RH |
1150 | tag_init (); |
1151 | } | |
1152 | ||
252b5132 | 1153 | symbolS *coff_last_function; |
17fc154e | 1154 | #ifndef OBJ_XCOFF |
252b5132 | 1155 | static symbolS *coff_last_bf; |
17fc154e | 1156 | #endif |
252b5132 RH |
1157 | |
1158 | void | |
a5324a3e | 1159 | coff_frob_symbol (symbolS *symp, int *punt) |
252b5132 RH |
1160 | { |
1161 | static symbolS *last_tagP; | |
1162 | static stack *block_stack; | |
1163 | static symbolS *set_end; | |
1164 | symbolS *next_set_end = NULL; | |
1165 | ||
1166 | if (symp == &abs_symbol) | |
1167 | { | |
1168 | *punt = 1; | |
1169 | return; | |
1170 | } | |
1171 | ||
1172 | if (current_lineno_sym) | |
a5324a3e | 1173 | coff_add_linesym (NULL); |
252b5132 RH |
1174 | |
1175 | if (!block_stack) | |
1176 | block_stack = stack_init (512, sizeof (symbolS*)); | |
1177 | ||
252b5132 | 1178 | #ifdef TE_PE |
977cdf5a NC |
1179 | if (S_GET_STORAGE_CLASS (symp) == C_NT_WEAK |
1180 | && ! S_IS_WEAK (symp) | |
1181 | && weak_is_altname (S_GET_NAME (symp))) | |
1182 | { | |
1183 | /* This is a weak alternate symbol. All processing of | |
1184 | PECOFFweak symbols is done here, through the alternate. */ | |
06e77878 AO |
1185 | symbolS *weakp = symbol_find_noref (weak_altname2name |
1186 | (S_GET_NAME (symp)), 1); | |
977cdf5a NC |
1187 | |
1188 | assert (weakp); | |
1189 | assert (S_GET_NUMBER_AUXILIARY (weakp) == 1); | |
1190 | ||
06e77878 AO |
1191 | if (! S_IS_WEAK (weakp)) |
1192 | { | |
1193 | /* The symbol was turned from weak to strong. Discard altname. */ | |
1194 | *punt = 1; | |
1195 | return; | |
1196 | } | |
1197 | else if (symbol_equated_p (weakp)) | |
977cdf5a NC |
1198 | { |
1199 | /* The weak symbol has an alternate specified; symp is unneeded. */ | |
1200 | S_SET_STORAGE_CLASS (weakp, C_NT_WEAK); | |
1201 | SA_SET_SYM_TAGNDX (weakp, | |
1202 | symbol_get_value_expression (weakp)->X_add_symbol); | |
1203 | ||
1204 | S_CLEAR_EXTERNAL (symp); | |
1205 | *punt = 1; | |
1206 | return; | |
1207 | } | |
1208 | else | |
1209 | { | |
1210 | /* The weak symbol has been assigned an alternate value. | |
1211 | Copy this value to symp, and set symp as weakp's alternate. */ | |
1212 | if (S_GET_STORAGE_CLASS (weakp) != C_NT_WEAK) | |
1213 | { | |
1214 | S_SET_STORAGE_CLASS (symp, S_GET_STORAGE_CLASS (weakp)); | |
1215 | S_SET_STORAGE_CLASS (weakp, C_NT_WEAK); | |
1216 | } | |
1217 | ||
1218 | if (S_IS_DEFINED (weakp)) | |
1219 | { | |
1220 | /* This is a defined weak symbol. Copy value information | |
1221 | from the weak symbol itself to the alternate symbol. */ | |
1222 | symbol_set_value_expression (symp, | |
1223 | symbol_get_value_expression (weakp)); | |
1224 | symbol_set_frag (symp, symbol_get_frag (weakp)); | |
1225 | S_SET_SEGMENT (symp, S_GET_SEGMENT (weakp)); | |
1226 | } | |
1227 | else | |
1228 | { | |
1229 | /* This is an undefined weak symbol. | |
1230 | Define the alternate symbol to zero. */ | |
1231 | S_SET_VALUE (symp, 0); | |
1232 | S_SET_SEGMENT (symp, absolute_section); | |
1233 | } | |
1234 | ||
1235 | S_SET_NAME (symp, weak_uniquify (S_GET_NAME (symp))); | |
1236 | S_SET_STORAGE_CLASS (symp, C_EXT); | |
1237 | ||
1238 | S_SET_VALUE (weakp, 0); | |
1239 | S_SET_SEGMENT (weakp, undefined_section); | |
1240 | } | |
252b5132 | 1241 | } |
977cdf5a NC |
1242 | #else /* TE_PE */ |
1243 | if (S_IS_WEAK (symp)) | |
1244 | S_SET_STORAGE_CLASS (symp, C_WEAKEXT); | |
1245 | #endif /* TE_PE */ | |
252b5132 RH |
1246 | |
1247 | if (!S_IS_DEFINED (symp) | |
1248 | && !S_IS_WEAK (symp) | |
1249 | && S_GET_STORAGE_CLASS (symp) != C_STAT) | |
1250 | S_SET_STORAGE_CLASS (symp, C_EXT); | |
1251 | ||
1252 | if (!SF_GET_DEBUG (symp)) | |
1253 | { | |
bdbe95c8 NC |
1254 | symbolS * real; |
1255 | ||
252b5132 RH |
1256 | if (!SF_GET_LOCAL (symp) |
1257 | && !SF_GET_STATICS (symp) | |
39da8128 | 1258 | && S_GET_STORAGE_CLASS (symp) != C_LABEL |
a5324a3e | 1259 | && symbol_constant_p (symp) |
06e77878 | 1260 | && (real = symbol_find_noref (S_GET_NAME (symp), 1)) |
bdbe95c8 | 1261 | && S_GET_STORAGE_CLASS (real) == C_NULL |
252b5132 RH |
1262 | && real != symp) |
1263 | { | |
1264 | c_symbol_merge (symp, real); | |
1265 | *punt = 1; | |
39da8128 | 1266 | return; |
252b5132 | 1267 | } |
bdbe95c8 | 1268 | |
5e0d736c | 1269 | if (!S_IS_DEFINED (symp) && !SF_GET_LOCAL (symp)) |
252b5132 | 1270 | { |
5e0d736c | 1271 | assert (S_GET_VALUE (symp) == 0); |
06e77878 AO |
1272 | if (S_IS_WEAKREFD (symp)) |
1273 | *punt = 1; | |
1274 | else | |
1275 | S_SET_EXTERNAL (symp); | |
5e0d736c DD |
1276 | } |
1277 | else if (S_GET_STORAGE_CLASS (symp) == C_NULL) | |
1278 | { | |
1279 | if (S_GET_SEGMENT (symp) == text_section | |
1280 | && symp != seg_info (text_section)->sym) | |
1281 | S_SET_STORAGE_CLASS (symp, C_LABEL); | |
252b5132 | 1282 | else |
5e0d736c | 1283 | S_SET_STORAGE_CLASS (symp, C_STAT); |
252b5132 | 1284 | } |
bdbe95c8 | 1285 | |
252b5132 RH |
1286 | if (SF_GET_PROCESS (symp)) |
1287 | { | |
1288 | if (S_GET_STORAGE_CLASS (symp) == C_BLOCK) | |
1289 | { | |
a5324a3e | 1290 | if (streq (S_GET_NAME (symp), ".bb")) |
252b5132 RH |
1291 | stack_push (block_stack, (char *) &symp); |
1292 | else | |
1293 | { | |
1294 | symbolS *begin; | |
bdbe95c8 | 1295 | |
252b5132 RH |
1296 | begin = *(symbolS **) stack_pop (block_stack); |
1297 | if (begin == 0) | |
1298 | as_warn (_("mismatched .eb")); | |
1299 | else | |
1300 | next_set_end = begin; | |
1301 | } | |
1302 | } | |
bdbe95c8 | 1303 | |
252b5132 RH |
1304 | if (coff_last_function == 0 && SF_GET_FUNCTION (symp)) |
1305 | { | |
1306 | union internal_auxent *auxp; | |
bdbe95c8 | 1307 | |
252b5132 RH |
1308 | coff_last_function = symp; |
1309 | if (S_GET_NUMBER_AUXILIARY (symp) < 1) | |
1310 | S_SET_NUMBER_AUXILIARY (symp, 1); | |
0561a208 | 1311 | auxp = SYM_AUXENT (symp); |
252b5132 RH |
1312 | memset (auxp->x_sym.x_fcnary.x_ary.x_dimen, 0, |
1313 | sizeof (auxp->x_sym.x_fcnary.x_ary.x_dimen)); | |
1314 | } | |
bdbe95c8 | 1315 | |
252b5132 RH |
1316 | if (S_GET_STORAGE_CLASS (symp) == C_EFCN) |
1317 | { | |
1318 | if (coff_last_function == 0) | |
161840f9 ILT |
1319 | as_fatal (_("C_EFCN symbol for %s out of scope"), |
1320 | S_GET_NAME (symp)); | |
252b5132 RH |
1321 | SA_SET_SYM_FSIZE (coff_last_function, |
1322 | (long) (S_GET_VALUE (symp) | |
1323 | - S_GET_VALUE (coff_last_function))); | |
1324 | next_set_end = coff_last_function; | |
1325 | coff_last_function = 0; | |
1326 | } | |
1327 | } | |
bdbe95c8 | 1328 | |
252b5132 RH |
1329 | if (S_IS_EXTERNAL (symp)) |
1330 | S_SET_STORAGE_CLASS (symp, C_EXT); | |
1331 | else if (SF_GET_LOCAL (symp)) | |
1332 | *punt = 1; | |
1333 | ||
1334 | if (SF_GET_FUNCTION (symp)) | |
49309057 | 1335 | symbol_get_bfdsym (symp)->flags |= BSF_FUNCTION; |
252b5132 RH |
1336 | } |
1337 | ||
8828d862 ILT |
1338 | /* Double check weak symbols. */ |
1339 | if (S_IS_WEAK (symp) && S_IS_COMMON (symp)) | |
1340 | as_bad (_("Symbol `%s' can not be both weak and common"), | |
1341 | S_GET_NAME (symp)); | |
1342 | ||
252b5132 RH |
1343 | if (SF_GET_TAG (symp)) |
1344 | last_tagP = symp; | |
1345 | else if (S_GET_STORAGE_CLASS (symp) == C_EOS) | |
1346 | next_set_end = last_tagP; | |
1347 | ||
1348 | #ifdef OBJ_XCOFF | |
1349 | /* This is pretty horrible, but we have to set *punt correctly in | |
1350 | order to call SA_SET_SYM_ENDNDX correctly. */ | |
809ffe0d | 1351 | if (! symbol_used_in_reloc_p (symp) |
49309057 | 1352 | && ((symbol_get_bfdsym (symp)->flags & BSF_SECTION_SYM) != 0 |
670ec21d | 1353 | || (! (S_IS_EXTERNAL (symp) || S_IS_WEAK (symp)) |
809ffe0d | 1354 | && ! symbol_get_tc (symp)->output |
252b5132 RH |
1355 | && S_GET_STORAGE_CLASS (symp) != C_FILE))) |
1356 | *punt = 1; | |
1357 | #endif | |
1358 | ||
1359 | if (set_end != (symbolS *) NULL | |
1360 | && ! *punt | |
49309057 | 1361 | && ((symbol_get_bfdsym (symp)->flags & BSF_NOT_AT_END) != 0 |
252b5132 RH |
1362 | || (S_IS_DEFINED (symp) |
1363 | && ! S_IS_COMMON (symp) | |
1364 | && (! S_IS_EXTERNAL (symp) || SF_GET_FUNCTION (symp))))) | |
1365 | { | |
1366 | SA_SET_SYM_ENDNDX (set_end, symp); | |
1367 | set_end = NULL; | |
1368 | } | |
1369 | ||
a04b544b ILT |
1370 | if (next_set_end != NULL) |
1371 | { | |
1372 | if (set_end != NULL) | |
1373 | as_warn ("Warning: internal error: forgetting to set endndx of %s", | |
1374 | S_GET_NAME (set_end)); | |
1375 | set_end = next_set_end; | |
1376 | } | |
252b5132 | 1377 | |
8642cce8 | 1378 | #ifndef OBJ_XCOFF |
252b5132 RH |
1379 | if (! *punt |
1380 | && S_GET_STORAGE_CLASS (symp) == C_FCN | |
a5324a3e | 1381 | && streq (S_GET_NAME (symp), ".bf")) |
252b5132 RH |
1382 | { |
1383 | if (coff_last_bf != NULL) | |
1384 | SA_SET_SYM_ENDNDX (coff_last_bf, symp); | |
1385 | coff_last_bf = symp; | |
1386 | } | |
8642cce8 | 1387 | #endif |
49309057 | 1388 | if (coffsymbol (symbol_get_bfdsym (symp))->lineno) |
252b5132 RH |
1389 | { |
1390 | int i; | |
1391 | struct line_no *lptr; | |
1392 | alent *l; | |
1393 | ||
49309057 | 1394 | lptr = (struct line_no *) coffsymbol (symbol_get_bfdsym (symp))->lineno; |
252b5132 RH |
1395 | for (i = 0; lptr; lptr = lptr->next) |
1396 | i++; | |
49309057 | 1397 | lptr = (struct line_no *) coffsymbol (symbol_get_bfdsym (symp))->lineno; |
252b5132 RH |
1398 | |
1399 | /* We need i entries for line numbers, plus 1 for the first | |
1400 | entry which BFD will override, plus 1 for the last zero | |
1401 | entry (a marker for BFD). */ | |
a5324a3e | 1402 | l = xmalloc ((i + 2) * sizeof (* l)); |
49309057 | 1403 | coffsymbol (symbol_get_bfdsym (symp))->lineno = l; |
252b5132 RH |
1404 | l[i + 1].line_number = 0; |
1405 | l[i + 1].u.sym = NULL; | |
1406 | for (; i > 0; i--) | |
1407 | { | |
1408 | if (lptr->frag) | |
bea9907b | 1409 | lptr->l.u.offset += lptr->frag->fr_address / OCTETS_PER_BYTE; |
252b5132 RH |
1410 | l[i] = lptr->l; |
1411 | lptr = lptr->next; | |
1412 | } | |
1413 | } | |
1414 | } | |
1415 | ||
1416 | void | |
a5324a3e NC |
1417 | coff_adjust_section_syms (bfd *abfd ATTRIBUTE_UNUSED, |
1418 | asection *sec, | |
1419 | void * x ATTRIBUTE_UNUSED) | |
252b5132 RH |
1420 | { |
1421 | symbolS *secsym; | |
1422 | segment_info_type *seginfo = seg_info (sec); | |
1423 | int nlnno, nrelocs = 0; | |
1424 | ||
1425 | /* RS/6000 gas creates a .debug section manually in ppc_frob_file in | |
1426 | tc-ppc.c. Do not get confused by it. */ | |
1427 | if (seginfo == NULL) | |
1428 | return; | |
1429 | ||
a5324a3e | 1430 | if (streq (sec->name, ".text")) |
252b5132 RH |
1431 | nlnno = coff_n_line_nos; |
1432 | else | |
1433 | nlnno = 0; | |
1434 | { | |
1435 | /* @@ Hope that none of the fixups expand to more than one reloc | |
1436 | entry... */ | |
1437 | fixS *fixp = seginfo->fix_root; | |
1438 | while (fixp) | |
1439 | { | |
1440 | if (! fixp->fx_done) | |
1441 | nrelocs++; | |
1442 | fixp = fixp->fx_next; | |
1443 | } | |
1444 | } | |
587aac4e | 1445 | if (bfd_get_section_size (sec) == 0 |
252b5132 RH |
1446 | && nrelocs == 0 |
1447 | && nlnno == 0 | |
1448 | && sec != text_section | |
1449 | && sec != data_section | |
1450 | && sec != bss_section) | |
1451 | return; | |
a5324a3e | 1452 | |
252b5132 | 1453 | secsym = section_symbol (sec); |
945a1a6b ILT |
1454 | /* This is an estimate; we'll plug in the real value using |
1455 | SET_SECTION_RELOCS later */ | |
252b5132 RH |
1456 | SA_SET_SCN_NRELOC (secsym, nrelocs); |
1457 | SA_SET_SCN_NLINNO (secsym, nlnno); | |
1458 | } | |
1459 | ||
1460 | void | |
a5324a3e | 1461 | coff_frob_file_after_relocs (void) |
252b5132 | 1462 | { |
a5324a3e | 1463 | bfd_map_over_sections (stdoutput, coff_adjust_section_syms, NULL); |
252b5132 RH |
1464 | } |
1465 | ||
6ff96af6 NC |
1466 | /* Implement the .section pseudo op: |
1467 | .section name {, "flags"} | |
1468 | ^ ^ | |
1469 | | +--- optional flags: 'b' for bss | |
1470 | | 'i' for info | |
1471 | +-- section name 'l' for lib | |
1472 | 'n' for noload | |
1473 | 'o' for over | |
1474 | 'w' for data | |
1475 | 'd' (apparently m88k for data) | |
1476 | 'x' for text | |
1477 | 'r' for read-only data | |
1478 | 's' for shared data (PE) | |
1479 | But if the argument is not a quoted string, treat it as a | |
1480 | subsegment number. | |
1481 | ||
1482 | Note the 'a' flag is silently ignored. This allows the same | |
1483 | .section directive to be parsed in both ELF and COFF formats. */ | |
252b5132 RH |
1484 | |
1485 | void | |
a5324a3e | 1486 | obj_coff_section (int ignore ATTRIBUTE_UNUSED) |
252b5132 | 1487 | { |
a5324a3e | 1488 | /* Strip out the section name. */ |
252b5132 RH |
1489 | char *section_name; |
1490 | char c; | |
1491 | char *name; | |
1492 | unsigned int exp; | |
c9900432 | 1493 | flagword flags, oldflags; |
252b5132 RH |
1494 | asection *sec; |
1495 | ||
1496 | if (flag_mri) | |
1497 | { | |
1498 | char type; | |
1499 | ||
1500 | s_mri_sect (&type); | |
1501 | return; | |
1502 | } | |
1503 | ||
1504 | section_name = input_line_pointer; | |
1505 | c = get_symbol_end (); | |
1506 | ||
1507 | name = xmalloc (input_line_pointer - section_name + 1); | |
1508 | strcpy (name, section_name); | |
1509 | ||
1510 | *input_line_pointer = c; | |
1511 | ||
1512 | SKIP_WHITESPACE (); | |
1513 | ||
1514 | exp = 0; | |
c9900432 | 1515 | flags = SEC_NO_FLAGS; |
252b5132 RH |
1516 | |
1517 | if (*input_line_pointer == ',') | |
1518 | { | |
1519 | ++input_line_pointer; | |
1520 | SKIP_WHITESPACE (); | |
1521 | if (*input_line_pointer != '"') | |
1522 | exp = get_absolute_expression (); | |
1523 | else | |
1524 | { | |
422fee64 NC |
1525 | unsigned char attr; |
1526 | int readonly_removed = 0; | |
1527 | int load_removed = 0; | |
1528 | ||
1529 | while (attr = *++input_line_pointer, | |
1530 | attr != '"' | |
1531 | && ! is_end_of_line[attr]) | |
252b5132 | 1532 | { |
422fee64 | 1533 | switch (attr) |
252b5132 | 1534 | { |
422fee64 NC |
1535 | case 'b': |
1536 | /* Uninitialised data section. */ | |
1537 | flags |= SEC_ALLOC; | |
1538 | flags &=~ SEC_LOAD; | |
1539 | break; | |
1540 | ||
1541 | case 'n': | |
1542 | /* Section not loaded. */ | |
1543 | flags &=~ SEC_LOAD; | |
1544 | flags |= SEC_NEVER_LOAD; | |
1545 | load_removed = 1; | |
1546 | break; | |
1547 | ||
1548 | case 's': | |
1549 | /* Shared section. */ | |
1550 | flags |= SEC_COFF_SHARED; | |
1551 | /* Fall through. */ | |
1552 | case 'd': | |
1553 | /* Data section. */ | |
1554 | flags |= SEC_DATA; | |
1555 | if (! load_removed) | |
1556 | flags |= SEC_LOAD; | |
1557 | flags &=~ SEC_READONLY; | |
1558 | break; | |
e96c5464 | 1559 | |
422fee64 NC |
1560 | case 'w': |
1561 | /* Writable section. */ | |
1562 | flags &=~ SEC_READONLY; | |
1563 | readonly_removed = 1; | |
1564 | break; | |
e96c5464 | 1565 | |
422fee64 NC |
1566 | case 'a': |
1567 | /* Ignore. Here for compatibility with ELF. */ | |
1568 | break; | |
1569 | ||
1570 | case 'r': /* Read-only section. Implies a data section. */ | |
1571 | readonly_removed = 0; | |
1572 | /* Fall through. */ | |
1573 | case 'x': /* Executable section. */ | |
1574 | /* If we are setting the 'x' attribute or if the 'r' | |
1575 | attribute is being used to restore the readonly status | |
1576 | of a code section (eg "wxr") then set the SEC_CODE flag, | |
1577 | otherwise set the SEC_DATA flag. */ | |
1578 | flags |= (attr == 'x' || (flags & SEC_CODE) ? SEC_CODE : SEC_DATA); | |
1579 | if (! load_removed) | |
1580 | flags |= SEC_LOAD; | |
1581 | /* Note - the READONLY flag is set here, even for the 'x' | |
708587a4 | 1582 | attribute in order to be compatible with the MSVC |
422fee64 NC |
1583 | linker. */ |
1584 | if (! readonly_removed) | |
1585 | flags |= SEC_READONLY; | |
1586 | break; | |
252b5132 RH |
1587 | |
1588 | case 'i': /* STYP_INFO */ | |
1589 | case 'l': /* STYP_LIB */ | |
1590 | case 'o': /* STYP_OVER */ | |
422fee64 | 1591 | as_warn (_("unsupported section attribute '%c'"), attr); |
252b5132 RH |
1592 | break; |
1593 | ||
1594 | default: | |
422fee64 | 1595 | as_warn (_("unknown section attribute '%c'"), attr); |
252b5132 RH |
1596 | break; |
1597 | } | |
252b5132 | 1598 | } |
422fee64 | 1599 | if (attr == '"') |
252b5132 RH |
1600 | ++input_line_pointer; |
1601 | } | |
1602 | } | |
1603 | ||
1604 | sec = subseg_new (name, (subsegT) exp); | |
1605 | ||
c9900432 NC |
1606 | oldflags = bfd_get_section_flags (stdoutput, sec); |
1607 | if (oldflags == SEC_NO_FLAGS) | |
252b5132 | 1608 | { |
c9900432 NC |
1609 | /* Set section flags for a new section just created by subseg_new. |
1610 | Provide a default if no flags were parsed. */ | |
1611 | if (flags == SEC_NO_FLAGS) | |
1ad5eac0 | 1612 | flags = TC_COFF_SECTION_DEFAULT_ATTRIBUTES; |
dcd619be | 1613 | |
c9900432 NC |
1614 | #ifdef COFF_LONG_SECTION_NAMES |
1615 | /* Add SEC_LINK_ONCE and SEC_LINK_DUPLICATES_DISCARD to .gnu.linkonce | |
1616 | sections so adjust_reloc_syms in write.c will correctly handle | |
1617 | relocs which refer to non-local symbols in these sections. */ | |
a5324a3e | 1618 | if (strneq (name, ".gnu.linkonce", sizeof (".gnu.linkonce") - 1)) |
cc8a6dd0 | 1619 | flags |= SEC_LINK_ONCE | SEC_LINK_DUPLICATES_DISCARD; |
c9900432 | 1620 | #endif |
252b5132 RH |
1621 | |
1622 | if (! bfd_set_section_flags (stdoutput, sec, flags)) | |
cc8a6dd0 KH |
1623 | as_warn (_("error setting flags for \"%s\": %s"), |
1624 | bfd_section_name (stdoutput, sec), | |
1625 | bfd_errmsg (bfd_get_error ())); | |
c9900432 NC |
1626 | } |
1627 | else if (flags != SEC_NO_FLAGS) | |
1628 | { | |
a5324a3e | 1629 | /* This section's attributes have already been set. Warn if the |
c9900432 | 1630 | attributes don't match. */ |
5dd0794d | 1631 | flagword matchflags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_CODE |
ebe372c1 | 1632 | | SEC_DATA | SEC_COFF_SHARED | SEC_NEVER_LOAD); |
c9900432 NC |
1633 | if ((flags ^ oldflags) & matchflags) |
1634 | as_warn (_("Ignoring changed section attributes for %s"), name); | |
252b5132 RH |
1635 | } |
1636 | ||
1637 | demand_empty_rest_of_line (); | |
1638 | } | |
1639 | ||
1640 | void | |
a5324a3e | 1641 | coff_adjust_symtab (void) |
252b5132 RH |
1642 | { |
1643 | if (symbol_rootP == NULL | |
1644 | || S_GET_STORAGE_CLASS (symbol_rootP) != C_FILE) | |
a4528eeb | 1645 | c_dot_file_symbol ("fake", 0); |
252b5132 RH |
1646 | } |
1647 | ||
1648 | void | |
a5324a3e | 1649 | coff_frob_section (segT sec) |
252b5132 RH |
1650 | { |
1651 | segT strsec; | |
1652 | char *p; | |
1653 | fragS *fragp; | |
1654 | bfd_vma size, n_entries, mask; | |
bea9907b | 1655 | bfd_vma align_power = (bfd_vma)sec->alignment_power + OCTETS_PER_BYTE_POWER; |
252b5132 RH |
1656 | |
1657 | /* The COFF back end in BFD requires that all section sizes be | |
bea9907b TW |
1658 | rounded up to multiples of the corresponding section alignments, |
1659 | supposedly because standard COFF has no other way of encoding alignment | |
1660 | for sections. If your COFF flavor has a different way of encoding | |
dcd619be | 1661 | section alignment, then skip this step, as TICOFF does. */ |
587aac4e | 1662 | size = bfd_get_section_size (sec); |
bea9907b TW |
1663 | mask = ((bfd_vma) 1 << align_power) - 1; |
1664 | #if !defined(TICOFF) | |
252b5132 RH |
1665 | if (size & mask) |
1666 | { | |
7f788821 NC |
1667 | bfd_vma new_size; |
1668 | fragS *last; | |
dcd619be | 1669 | |
7f788821 NC |
1670 | new_size = (size + mask) & ~mask; |
1671 | bfd_set_section_size (stdoutput, sec, new_size); | |
1672 | ||
1673 | /* If the size had to be rounded up, add some padding in | |
1674 | the last non-empty frag. */ | |
1675 | fragp = seg_info (sec)->frchainP->frch_root; | |
1676 | last = seg_info (sec)->frchainP->frch_last; | |
1677 | while (fragp->fr_next != last) | |
cc8a6dd0 | 1678 | fragp = fragp->fr_next; |
7f788821 NC |
1679 | last->fr_address = size; |
1680 | fragp->fr_offset += new_size - size; | |
252b5132 | 1681 | } |
bea9907b | 1682 | #endif |
252b5132 RH |
1683 | |
1684 | /* If the section size is non-zero, the section symbol needs an aux | |
1685 | entry associated with it, indicating the size. We don't know | |
1686 | all the values yet; coff_frob_symbol will fill them in later. */ | |
bea9907b | 1687 | #ifndef TICOFF |
252b5132 RH |
1688 | if (size != 0 |
1689 | || sec == text_section | |
1690 | || sec == data_section | |
1691 | || sec == bss_section) | |
bea9907b | 1692 | #endif |
252b5132 RH |
1693 | { |
1694 | symbolS *secsym = section_symbol (sec); | |
1695 | ||
1696 | S_SET_STORAGE_CLASS (secsym, C_STAT); | |
1697 | S_SET_NUMBER_AUXILIARY (secsym, 1); | |
1698 | SF_SET_STATICS (secsym); | |
1699 | SA_SET_SCN_SCNLEN (secsym, size); | |
1700 | } | |
1701 | ||
a5324a3e | 1702 | /* FIXME: These should be in a "stabs.h" file, or maybe as.h. */ |
252b5132 RH |
1703 | #ifndef STAB_SECTION_NAME |
1704 | #define STAB_SECTION_NAME ".stab" | |
1705 | #endif | |
1706 | #ifndef STAB_STRING_SECTION_NAME | |
1707 | #define STAB_STRING_SECTION_NAME ".stabstr" | |
1708 | #endif | |
a5324a3e | 1709 | if (! streq (STAB_STRING_SECTION_NAME, sec->name)) |
252b5132 RH |
1710 | return; |
1711 | ||
1712 | strsec = sec; | |
1713 | sec = subseg_get (STAB_SECTION_NAME, 0); | |
1714 | /* size is already rounded up, since other section will be listed first */ | |
587aac4e | 1715 | size = bfd_get_section_size (strsec); |
252b5132 | 1716 | |
587aac4e | 1717 | n_entries = bfd_get_section_size (sec) / 12 - 1; |
252b5132 RH |
1718 | |
1719 | /* Find first non-empty frag. It should be large enough. */ | |
1720 | fragp = seg_info (sec)->frchainP->frch_root; | |
1721 | while (fragp && fragp->fr_fix == 0) | |
1722 | fragp = fragp->fr_next; | |
1723 | assert (fragp != 0 && fragp->fr_fix >= 12); | |
1724 | ||
1725 | /* Store the values. */ | |
1726 | p = fragp->fr_literal; | |
1727 | bfd_h_put_16 (stdoutput, n_entries, (bfd_byte *) p + 6); | |
1728 | bfd_h_put_32 (stdoutput, size, (bfd_byte *) p + 8); | |
1729 | } | |
1730 | ||
1731 | void | |
a5324a3e | 1732 | obj_coff_init_stab_section (segT seg) |
252b5132 RH |
1733 | { |
1734 | char *file; | |
1735 | char *p; | |
1736 | char *stabstr_name; | |
1737 | unsigned int stroff; | |
1738 | ||
dcd619be | 1739 | /* Make space for this first symbol. */ |
252b5132 | 1740 | p = frag_more (12); |
dcd619be | 1741 | /* Zero it out. */ |
252b5132 RH |
1742 | memset (p, 0, 12); |
1743 | as_where (&file, (unsigned int *) NULL); | |
a5324a3e | 1744 | stabstr_name = xmalloc (strlen (seg->name) + 4); |
252b5132 RH |
1745 | strcpy (stabstr_name, seg->name); |
1746 | strcat (stabstr_name, "str"); | |
1747 | stroff = get_stab_string_offset (file, stabstr_name); | |
1748 | know (stroff == 1); | |
1749 | md_number_to_chars (p, stroff, 4); | |
1750 | } | |
1751 | ||
1752 | #ifdef DEBUG | |
252b5132 | 1753 | const char * |
a5324a3e | 1754 | s_get_name (symbolS *s) |
252b5132 RH |
1755 | { |
1756 | return ((s == NULL) ? "(NULL)" : S_GET_NAME (s)); | |
1757 | } | |
1758 | ||
1759 | void | |
a5324a3e | 1760 | symbol_dump (void) |
252b5132 RH |
1761 | { |
1762 | symbolS *symbolP; | |
1763 | ||
1764 | for (symbolP = symbol_rootP; symbolP; symbolP = symbol_next (symbolP)) | |
a5324a3e NC |
1765 | printf (_("0x%lx: \"%s\" type = %ld, class = %d, segment = %d\n"), |
1766 | (unsigned long) symbolP, | |
1767 | S_GET_NAME (symbolP), | |
1768 | (long) S_GET_DATA_TYPE (symbolP), | |
1769 | S_GET_STORAGE_CLASS (symbolP), | |
1770 | (int) S_GET_SEGMENT (symbolP)); | |
252b5132 RH |
1771 | } |
1772 | ||
1773 | #endif /* DEBUG */ | |
1774 | ||
7be1c489 | 1775 | const pseudo_typeS coff_pseudo_table[] = |
252b5132 | 1776 | { |
7be1c489 AM |
1777 | {"ABORT", s_abort, 0}, |
1778 | {"appline", obj_coff_ln, 1}, | |
1779 | /* We accept the .bss directive for backward compatibility with | |
1780 | earlier versions of gas. */ | |
1781 | {"bss", obj_coff_bss, 0}, | |
1782 | {"def", obj_coff_def, 0}, | |
1783 | {"dim", obj_coff_dim, 0}, | |
1784 | {"endef", obj_coff_endef, 0}, | |
1785 | {"ident", obj_coff_ident, 0}, | |
1786 | {"line", obj_coff_line, 0}, | |
1787 | {"ln", obj_coff_ln, 0}, | |
1788 | {"scl", obj_coff_scl, 0}, | |
1789 | {"sect", obj_coff_section, 0}, | |
1790 | {"sect.s", obj_coff_section, 0}, | |
1791 | {"section", obj_coff_section, 0}, | |
1792 | {"section.s", obj_coff_section, 0}, | |
1793 | /* FIXME: We ignore the MRI short attribute. */ | |
1794 | {"size", obj_coff_size, 0}, | |
1795 | {"tag", obj_coff_tag, 0}, | |
1796 | {"type", obj_coff_type, 0}, | |
1797 | {"val", obj_coff_val, 0}, | |
1798 | {"version", s_ignore, 0}, | |
1799 | {"loc", obj_coff_loc, 0}, | |
1800 | {"optim", s_ignore, 0}, /* For sun386i cc (?) */ | |
1801 | {"weak", obj_coff_weak, 0}, | |
1802 | #if defined TC_TIC4X | |
1803 | /* The tic4x uses sdef instead of def. */ | |
1804 | {"sdef", obj_coff_def, 0}, | |
252b5132 | 1805 | #endif |
7be1c489 AM |
1806 | {NULL, NULL, 0} |
1807 | }; | |
1808 | \f | |
252b5132 | 1809 | |
7be1c489 | 1810 | /* Support for a COFF emulation. */ |
252b5132 RH |
1811 | |
1812 | static void | |
7be1c489 | 1813 | coff_pop_insert (void) |
252b5132 | 1814 | { |
7be1c489 | 1815 | pop_insert (coff_pseudo_table); |
252b5132 RH |
1816 | } |
1817 | ||
a5324a3e | 1818 | static int |
7be1c489 | 1819 | coff_separate_stab_sections (void) |
a5324a3e | 1820 | { |
7be1c489 | 1821 | return 1; |
a5324a3e NC |
1822 | } |
1823 | ||
7be1c489 | 1824 | const struct format_ops coff_format_ops = |
252b5132 RH |
1825 | { |
1826 | bfd_target_coff_flavour, | |
4c63da97 AM |
1827 | 0, /* dfl_leading_underscore */ |
1828 | 1, /* emit_section_symbols */ | |
5110c57e HPN |
1829 | 0, /* begin */ |
1830 | c_dot_file_symbol, | |
252b5132 | 1831 | coff_frob_symbol, |
4c63da97 | 1832 | 0, /* frob_file */ |
339681c0 | 1833 | 0, /* frob_file_before_adjust */ |
a161fe53 | 1834 | 0, /* frob_file_before_fix */ |
252b5132 | 1835 | coff_frob_file_after_relocs, |
4c63da97 AM |
1836 | 0, /* s_get_size */ |
1837 | 0, /* s_set_size */ | |
1838 | 0, /* s_get_align */ | |
1839 | 0, /* s_set_align */ | |
1840 | 0, /* s_get_other */ | |
5110c57e | 1841 | 0, /* s_set_other */ |
4c63da97 | 1842 | 0, /* s_get_desc */ |
5110c57e HPN |
1843 | 0, /* s_set_desc */ |
1844 | 0, /* s_get_type */ | |
1845 | 0, /* s_set_type */ | |
4c63da97 AM |
1846 | 0, /* copy_symbol_attributes */ |
1847 | 0, /* generate_asm_lineno */ | |
1848 | 0, /* process_stab */ | |
5110c57e HPN |
1849 | coff_separate_stab_sections, |
1850 | obj_coff_init_stab_section, | |
4c63da97 | 1851 | 0, /* sec_sym_ok_for_reloc */ |
252b5132 | 1852 | coff_pop_insert, |
4c63da97 | 1853 | 0, /* ecoff_set_ext */ |
252b5132 | 1854 | coff_obj_read_begin_hook, |
4c63da97 | 1855 | coff_obj_symbol_new_hook |
252b5132 | 1856 | }; |