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252b5132 | 1 | /* coff object file format |
fd67aa11 | 2 | Copyright (C) 1989-2024 Free Software Foundation, Inc. |
252b5132 RH |
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 | |
ec2655a6 | 8 | the Free Software Foundation; either version 3, or (at your option) |
252b5132 RH |
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 | |
4b4da160 NC |
18 | Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA |
19 | 02110-1301, USA. */ | |
252b5132 RH |
20 | |
21 | #define OBJ_HEADER "obj-coff.h" | |
22 | ||
23 | #include "as.h" | |
31907d5e | 24 | #include "safe-ctype.h" |
252b5132 RH |
25 | #include "subsegs.h" |
26 | ||
977cdf5a NC |
27 | #ifdef TE_PE |
28 | #include "coff/pe.h" | |
29 | #endif | |
30 | ||
85645aed TG |
31 | #ifdef OBJ_XCOFF |
32 | #include "coff/xcoff.h" | |
33 | #endif | |
34 | ||
a5324a3e | 35 | #define streq(a,b) (strcmp ((a), (b)) == 0) |
a5324a3e | 36 | |
252b5132 RH |
37 | /* I think this is probably always correct. */ |
38 | #ifndef KEEP_RELOC_INFO | |
39 | #define KEEP_RELOC_INFO | |
40 | #endif | |
41 | ||
7be1c489 AM |
42 | /* obj_coff_section will use this macro to set a new section's |
43 | attributes when a directive has no valid flags or the "w" flag is | |
44 | used. This default should be appropriate for most. */ | |
b8a9dcab NC |
45 | #ifndef TC_COFF_SECTION_DEFAULT_ATTRIBUTES |
46 | #define TC_COFF_SECTION_DEFAULT_ATTRIBUTES (SEC_LOAD | SEC_DATA) | |
47 | #endif | |
48 | ||
8d28c9d7 AM |
49 | /* This is used to hold the symbol built by a sequence of pseudo-ops |
50 | from .def and .endef. */ | |
51 | static symbolS *def_symbol_in_progress; | |
977cdf5a NC |
52 | #ifdef TE_PE |
53 | /* PE weak alternate symbols begin with this string. */ | |
54 | static const char weak_altprefix[] = ".weak."; | |
55 | #endif /* TE_PE */ | |
8d28c9d7 | 56 | |
f3d2b04b KT |
57 | #include "obj-coff-seh.c" |
58 | ||
8d28c9d7 AM |
59 | typedef struct |
60 | { | |
61 | unsigned long chunk_size; | |
62 | unsigned long element_size; | |
63 | unsigned long size; | |
64 | char *data; | |
65 | unsigned long pointer; | |
66 | } | |
67 | stack; | |
68 | ||
252b5132 | 69 | \f |
a5324a3e | 70 | /* Stack stuff. */ |
252b5132 RH |
71 | |
72 | static stack * | |
a5324a3e NC |
73 | stack_init (unsigned long chunk_size, |
74 | unsigned long element_size) | |
252b5132 RH |
75 | { |
76 | stack *st; | |
77 | ||
add39d23 TS |
78 | st = XNEW (stack); |
79 | st->data = XNEWVEC (char, chunk_size); | |
252b5132 RH |
80 | if (!st->data) |
81 | { | |
82 | free (st); | |
a5324a3e | 83 | return NULL; |
252b5132 RH |
84 | } |
85 | st->pointer = 0; | |
86 | st->size = chunk_size; | |
87 | st->chunk_size = chunk_size; | |
88 | st->element_size = element_size; | |
89 | return st; | |
90 | } | |
91 | ||
252b5132 | 92 | static char * |
a5324a3e | 93 | stack_push (stack *st, char *element) |
252b5132 RH |
94 | { |
95 | if (st->pointer + st->element_size >= st->size) | |
96 | { | |
97 | st->size += st->chunk_size; | |
add39d23 | 98 | st->data = XRESIZEVEC (char, st->data, st->size); |
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 | 118 | |
629310ab | 119 | static htab_t tag_hash; |
252b5132 RH |
120 | |
121 | static void | |
a5324a3e | 122 | tag_init (void) |
252b5132 | 123 | { |
629310ab | 124 | tag_hash = str_htab_create (); |
252b5132 RH |
125 | } |
126 | ||
127 | static void | |
a5324a3e | 128 | tag_insert (const char *name, symbolS *symbolP) |
252b5132 | 129 | { |
fe0e921f | 130 | str_hash_insert (tag_hash, name, symbolP, 1); |
252b5132 RH |
131 | } |
132 | ||
133 | static symbolS * | |
a5324a3e | 134 | tag_find (char *name) |
252b5132 | 135 | { |
629310ab | 136 | return (symbolS *) str_hash_find (tag_hash, name); |
252b5132 RH |
137 | } |
138 | ||
139 | static symbolS * | |
a5324a3e | 140 | tag_find_or_make (char *name) |
252b5132 RH |
141 | { |
142 | symbolS *symbolP; | |
143 | ||
144 | if ((symbolP = tag_find (name)) == NULL) | |
145 | { | |
e01e1cee | 146 | symbolP = symbol_new (name, undefined_section, &zero_address_frag, 0); |
252b5132 RH |
147 | |
148 | tag_insert (S_GET_NAME (symbolP), symbolP); | |
252b5132 | 149 | symbol_table_insert (symbolP); |
a5324a3e | 150 | } |
252b5132 RH |
151 | |
152 | return symbolP; | |
153 | } | |
154 | ||
155 | /* We accept the .bss directive to set the section for backward | |
156 | compatibility with earlier versions of gas. */ | |
157 | ||
158 | static void | |
a5324a3e | 159 | obj_coff_bss (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
160 | { |
161 | if (*input_line_pointer == '\n') | |
162 | subseg_new (".bss", get_absolute_expression ()); | |
163 | else | |
164 | s_lcomm (0); | |
165 | } | |
166 | ||
c1711530 DK |
167 | #ifdef TE_PE |
168 | /* Called from read.c:s_comm after we've parsed .comm symbol, size. | |
169 | Parse a possible alignment value. */ | |
170 | ||
171 | static symbolS * | |
172 | obj_coff_common_parse (int ignore ATTRIBUTE_UNUSED, symbolS *symbolP, addressT size) | |
173 | { | |
174 | addressT align = 0; | |
175 | ||
176 | if (*input_line_pointer == ',') | |
177 | { | |
178 | align = parse_align (0); | |
179 | if (align == (addressT) -1) | |
180 | return NULL; | |
181 | } | |
182 | ||
183 | S_SET_VALUE (symbolP, size); | |
184 | S_SET_EXTERNAL (symbolP); | |
185 | S_SET_SEGMENT (symbolP, bfd_com_section_ptr); | |
186 | ||
187 | symbol_get_bfdsym (symbolP)->flags |= BSF_OBJECT; | |
188 | ||
189 | /* There is no S_SET_ALIGN (symbolP, align) in COFF/PE. | |
190 | Instead we must add a note to the .drectve section. */ | |
191 | if (align) | |
192 | { | |
193 | segT current_seg = now_seg; | |
194 | subsegT current_subseg = now_subseg; | |
195 | flagword oldflags; | |
196 | asection *sec; | |
197 | size_t pfxlen, numlen; | |
198 | char *frag; | |
199 | char numbuff[20]; | |
200 | ||
201 | sec = subseg_new (".drectve", 0); | |
fd361982 | 202 | oldflags = bfd_section_flags (sec); |
c1711530 DK |
203 | if (oldflags == SEC_NO_FLAGS) |
204 | { | |
fd361982 | 205 | if (!bfd_set_section_flags (sec, TC_COFF_SECTION_DEFAULT_ATTRIBUTES)) |
c1711530 | 206 | as_warn (_("error setting flags for \"%s\": %s"), |
fd361982 | 207 | bfd_section_name (sec), |
c1711530 DK |
208 | bfd_errmsg (bfd_get_error ())); |
209 | } | |
210 | ||
211 | /* Emit a string. Note no NUL-termination. */ | |
a7879ef1 | 212 | pfxlen = strlen (" -aligncomm:") + 2 + strlen (S_GET_NAME (symbolP)) + 1; |
c1711530 DK |
213 | numlen = snprintf (numbuff, sizeof (numbuff), "%d", (int) align); |
214 | frag = frag_more (pfxlen + numlen); | |
a7879ef1 | 215 | (void) sprintf (frag, " -aligncomm:\"%s\",", S_GET_NAME (symbolP)); |
c1711530 DK |
216 | memcpy (frag + pfxlen, numbuff, numlen); |
217 | /* Restore original subseg. */ | |
218 | subseg_set (current_seg, current_subseg); | |
219 | } | |
220 | ||
221 | return symbolP; | |
222 | } | |
223 | ||
224 | static void | |
225 | obj_coff_comm (int ignore ATTRIBUTE_UNUSED) | |
226 | { | |
227 | s_comm_internal (ignore, obj_coff_common_parse); | |
228 | } | |
229 | #endif /* TE_PE */ | |
230 | ||
252b5132 RH |
231 | /* @@ Ick. */ |
232 | static segT | |
a5324a3e | 233 | fetch_coff_debug_section (void) |
252b5132 RH |
234 | { |
235 | static segT debug_section; | |
a5324a3e | 236 | |
252b5132 RH |
237 | if (!debug_section) |
238 | { | |
5a38dc70 | 239 | const asymbol *s; |
a5324a3e | 240 | |
a0722319 | 241 | s = bfd_make_debug_symbol (stdoutput); |
9c2799c2 | 242 | gas_assert (s != 0); |
252b5132 RH |
243 | debug_section = s->section; |
244 | } | |
245 | return debug_section; | |
246 | } | |
247 | ||
248 | void | |
a5324a3e | 249 | SA_SET_SYM_ENDNDX (symbolS *sym, symbolS *val) |
252b5132 RH |
250 | { |
251 | combined_entry_type *entry, *p; | |
252 | ||
49309057 ILT |
253 | entry = &coffsymbol (symbol_get_bfdsym (sym))->native[1]; |
254 | p = coffsymbol (symbol_get_bfdsym (val))->native; | |
252b5132 RH |
255 | entry->u.auxent.x_sym.x_fcnary.x_fcn.x_endndx.p = p; |
256 | entry->fix_end = 1; | |
257 | } | |
258 | ||
259 | static void | |
a5324a3e | 260 | SA_SET_SYM_TAGNDX (symbolS *sym, symbolS *val) |
252b5132 RH |
261 | { |
262 | combined_entry_type *entry, *p; | |
263 | ||
49309057 ILT |
264 | entry = &coffsymbol (symbol_get_bfdsym (sym))->native[1]; |
265 | p = coffsymbol (symbol_get_bfdsym (val))->native; | |
252b5132 RH |
266 | entry->u.auxent.x_sym.x_tagndx.p = p; |
267 | entry->fix_tag = 1; | |
268 | } | |
269 | ||
270 | static int | |
a5324a3e | 271 | S_GET_DATA_TYPE (symbolS *sym) |
252b5132 | 272 | { |
49309057 | 273 | return coffsymbol (symbol_get_bfdsym (sym))->native->u.syment.n_type; |
252b5132 RH |
274 | } |
275 | ||
276 | int | |
a5324a3e | 277 | S_SET_DATA_TYPE (symbolS *sym, int val) |
252b5132 | 278 | { |
49309057 | 279 | coffsymbol (symbol_get_bfdsym (sym))->native->u.syment.n_type = val; |
252b5132 RH |
280 | return val; |
281 | } | |
282 | ||
283 | int | |
a5324a3e | 284 | S_GET_STORAGE_CLASS (symbolS *sym) |
252b5132 | 285 | { |
49309057 | 286 | return coffsymbol (symbol_get_bfdsym (sym))->native->u.syment.n_sclass; |
252b5132 RH |
287 | } |
288 | ||
289 | int | |
a5324a3e | 290 | S_SET_STORAGE_CLASS (symbolS *sym, int val) |
252b5132 | 291 | { |
49309057 | 292 | coffsymbol (symbol_get_bfdsym (sym))->native->u.syment.n_sclass = val; |
252b5132 RH |
293 | return val; |
294 | } | |
295 | ||
dcd619be | 296 | /* Merge a debug symbol containing debug information into a normal symbol. */ |
252b5132 | 297 | |
a5324a3e NC |
298 | static void |
299 | c_symbol_merge (symbolS *debug, symbolS *normal) | |
252b5132 RH |
300 | { |
301 | S_SET_DATA_TYPE (normal, S_GET_DATA_TYPE (debug)); | |
302 | S_SET_STORAGE_CLASS (normal, S_GET_STORAGE_CLASS (debug)); | |
303 | ||
304 | if (S_GET_NUMBER_AUXILIARY (debug) > S_GET_NUMBER_AUXILIARY (normal)) | |
a5324a3e NC |
305 | /* Take the most we have. */ |
306 | S_SET_NUMBER_AUXILIARY (normal, S_GET_NUMBER_AUXILIARY (debug)); | |
252b5132 RH |
307 | |
308 | if (S_GET_NUMBER_AUXILIARY (debug) > 0) | |
a5324a3e NC |
309 | /* Move all the auxiliary information. */ |
310 | memcpy (SYM_AUXINFO (normal), SYM_AUXINFO (debug), | |
311 | (S_GET_NUMBER_AUXILIARY (debug) | |
312 | * sizeof (*SYM_AUXINFO (debug)))); | |
252b5132 | 313 | |
dcd619be | 314 | /* Move the debug flags. */ |
252b5132 RH |
315 | SF_SET_DEBUG_FIELD (normal, SF_GET_DEBUG_FIELD (debug)); |
316 | } | |
317 | ||
318 | void | |
c39e89c3 | 319 | c_dot_file_symbol (const char *filename) |
252b5132 RH |
320 | { |
321 | symbolS *symbolP; | |
322 | ||
0561a208 ILT |
323 | /* BFD converts filename to a .file symbol with an aux entry. It |
324 | also handles chaining. */ | |
e01e1cee | 325 | symbolP = symbol_new (filename, bfd_abs_section_ptr, &zero_address_frag, 0); |
252b5132 RH |
326 | |
327 | S_SET_STORAGE_CLASS (symbolP, C_FILE); | |
328 | S_SET_NUMBER_AUXILIARY (symbolP, 1); | |
329 | ||
49309057 | 330 | symbol_get_bfdsym (symbolP)->flags = BSF_DEBUGGING; |
252b5132 RH |
331 | |
332 | #ifndef NO_LISTING | |
333 | { | |
334 | extern int listing; | |
a5324a3e | 335 | |
252b5132 | 336 | if (listing) |
a5324a3e | 337 | listing_source_file (filename); |
252b5132 RH |
338 | } |
339 | #endif | |
340 | ||
a5324a3e | 341 | /* Make sure that the symbol is first on the symbol chain. */ |
252b5132 RH |
342 | if (symbol_rootP != symbolP) |
343 | { | |
344 | symbol_remove (symbolP, &symbol_rootP, &symbol_lastP); | |
345 | symbol_insert (symbolP, symbol_rootP, &symbol_rootP, &symbol_lastP); | |
a5324a3e | 346 | } |
252b5132 RH |
347 | } |
348 | ||
a5324a3e | 349 | /* Line number handling. */ |
252b5132 | 350 | |
a5324a3e NC |
351 | struct line_no |
352 | { | |
252b5132 RH |
353 | struct line_no *next; |
354 | fragS *frag; | |
355 | alent l; | |
356 | }; | |
357 | ||
358 | int coff_line_base; | |
359 | ||
360 | /* Symbol of last function, which we should hang line#s off of. */ | |
361 | static symbolS *line_fsym; | |
362 | ||
363 | #define in_function() (line_fsym != 0) | |
364 | #define clear_function() (line_fsym = 0) | |
365 | #define set_function(F) (line_fsym = (F), coff_add_linesym (F)) | |
366 | ||
367 | \f | |
368 | void | |
a5324a3e | 369 | coff_obj_symbol_new_hook (symbolS *symbolP) |
252b5132 RH |
370 | { |
371 | long sz = (OBJ_COFF_MAX_AUXENTRIES + 1) * sizeof (combined_entry_type); | |
add39d23 | 372 | char * s = XNEWVEC (char, sz); |
dcd619be | 373 | |
252b5132 | 374 | memset (s, 0, sz); |
49309057 | 375 | coffsymbol (symbol_get_bfdsym (symbolP))->native = (combined_entry_type *) s; |
5b7c81bd | 376 | coffsymbol (symbol_get_bfdsym (symbolP))->native->is_sym = true; |
252b5132 RH |
377 | |
378 | S_SET_DATA_TYPE (symbolP, T_NULL); | |
379 | S_SET_STORAGE_CLASS (symbolP, 0); | |
380 | S_SET_NUMBER_AUXILIARY (symbolP, 0); | |
381 | ||
382 | if (S_IS_STRING (symbolP)) | |
383 | SF_SET_STRING (symbolP); | |
dcd619be | 384 | |
252b5132 RH |
385 | if (S_IS_LOCAL (symbolP)) |
386 | SF_SET_LOCAL (symbolP); | |
387 | } | |
388 | ||
6a2b6326 JB |
389 | void |
390 | coff_obj_symbol_clone_hook (symbolS *newsymP, symbolS *orgsymP) | |
391 | { | |
add39d23 TS |
392 | long elts = OBJ_COFF_MAX_AUXENTRIES + 1; |
393 | combined_entry_type * s = XNEWVEC (combined_entry_type, elts); | |
6a2b6326 | 394 | |
add39d23 TS |
395 | memcpy (s, coffsymbol (symbol_get_bfdsym (orgsymP))->native, |
396 | elts * sizeof (combined_entry_type)); | |
6a2b6326 JB |
397 | coffsymbol (symbol_get_bfdsym (newsymP))->native = s; |
398 | ||
399 | SF_SET (newsymP, SF_GET (orgsymP)); | |
400 | } | |
401 | ||
252b5132 | 402 | \f |
a5324a3e | 403 | /* Handle .ln directives. */ |
252b5132 RH |
404 | |
405 | static symbolS *current_lineno_sym; | |
406 | static struct line_no *line_nos; | |
a5324a3e | 407 | /* FIXME: Blindly assume all .ln directives will be in the .text section. */ |
252b5132 RH |
408 | int coff_n_line_nos; |
409 | ||
410 | static void | |
a5324a3e | 411 | add_lineno (fragS * frag, addressT offset, int num) |
252b5132 | 412 | { |
add39d23 | 413 | struct line_no * new_line = XNEW (struct line_no); |
a5324a3e | 414 | |
252b5132 | 415 | if (!current_lineno_sym) |
a5324a3e | 416 | abort (); |
6877bb43 TR |
417 | |
418 | #ifndef OBJ_XCOFF | |
a5324a3e | 419 | /* The native aix assembler accepts negative line number. */ |
6877bb43 | 420 | |
dcd619be | 421 | if (num <= 0) |
e8a3ab75 ILT |
422 | { |
423 | /* Zero is used as an end marker in the file. */ | |
b985eaa8 ILT |
424 | as_warn (_("Line numbers must be positive integers\n")); |
425 | num = 1; | |
e8a3ab75 | 426 | } |
6877bb43 | 427 | #endif /* OBJ_XCOFF */ |
252b5132 RH |
428 | new_line->next = line_nos; |
429 | new_line->frag = frag; | |
430 | new_line->l.line_number = num; | |
431 | new_line->l.u.offset = offset; | |
432 | line_nos = new_line; | |
433 | coff_n_line_nos++; | |
434 | } | |
435 | ||
436 | void | |
a5324a3e | 437 | coff_add_linesym (symbolS *sym) |
252b5132 RH |
438 | { |
439 | if (line_nos) | |
440 | { | |
49309057 ILT |
441 | coffsymbol (symbol_get_bfdsym (current_lineno_sym))->lineno = |
442 | (alent *) line_nos; | |
252b5132 RH |
443 | coff_n_line_nos++; |
444 | line_nos = 0; | |
445 | } | |
446 | current_lineno_sym = sym; | |
447 | } | |
448 | ||
449 | static void | |
c39e89c3 | 450 | obj_coff_ln (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
451 | { |
452 | int l; | |
453 | ||
c39e89c3 | 454 | if (def_symbol_in_progress != NULL) |
252b5132 RH |
455 | { |
456 | as_warn (_(".ln pseudo-op inside .def/.endef: ignored.")); | |
457 | demand_empty_rest_of_line (); | |
458 | return; | |
459 | } | |
460 | ||
461 | l = get_absolute_expression (); | |
252b5132 | 462 | |
c39e89c3 JB |
463 | /* If there is no lineno symbol, treat a .ln directive |
464 | as if it were a (no longer existing) .appline one. */ | |
465 | if (current_lineno_sym == NULL) | |
252b5132 | 466 | new_logical_line ((char *) NULL, l - 1); |
e237d851 NC |
467 | else |
468 | add_lineno (frag_now, frag_now_fix (), l); | |
252b5132 RH |
469 | |
470 | #ifndef NO_LISTING | |
471 | { | |
472 | extern int listing; | |
473 | ||
474 | if (listing) | |
475 | { | |
c39e89c3 | 476 | l += coff_line_base - 1; |
252b5132 RH |
477 | listing_source_line (l); |
478 | } | |
479 | } | |
480 | #endif | |
481 | ||
482 | demand_empty_rest_of_line (); | |
483 | } | |
484 | ||
28428223 ILT |
485 | /* .loc is essentially the same as .ln; parse it for assembler |
486 | compatibility. */ | |
487 | ||
488 | static void | |
a5324a3e | 489 | obj_coff_loc (int ignore ATTRIBUTE_UNUSED) |
28428223 ILT |
490 | { |
491 | int lineno; | |
492 | ||
493 | /* FIXME: Why do we need this check? We need it for ECOFF, but why | |
494 | do we need it for COFF? */ | |
495 | if (now_seg != text_section) | |
496 | { | |
497 | as_warn (_(".loc outside of .text")); | |
498 | demand_empty_rest_of_line (); | |
499 | return; | |
500 | } | |
501 | ||
502 | if (def_symbol_in_progress != NULL) | |
503 | { | |
504 | as_warn (_(".loc pseudo-op inside .def/.endef: ignored.")); | |
505 | demand_empty_rest_of_line (); | |
506 | return; | |
507 | } | |
508 | ||
509 | /* Skip the file number. */ | |
510 | SKIP_WHITESPACE (); | |
511 | get_absolute_expression (); | |
512 | SKIP_WHITESPACE (); | |
513 | ||
514 | lineno = get_absolute_expression (); | |
515 | ||
516 | #ifndef NO_LISTING | |
517 | { | |
518 | extern int listing; | |
519 | ||
520 | if (listing) | |
521 | { | |
cc8a6dd0 | 522 | lineno += coff_line_base - 1; |
28428223 ILT |
523 | listing_source_line (lineno); |
524 | } | |
525 | } | |
526 | #endif | |
527 | ||
528 | demand_empty_rest_of_line (); | |
529 | ||
530 | add_lineno (frag_now, frag_now_fix (), lineno); | |
531 | } | |
532 | ||
7a6284c4 ILT |
533 | /* Handle the .ident pseudo-op. */ |
534 | ||
535 | static void | |
a5324a3e | 536 | obj_coff_ident (int ignore ATTRIBUTE_UNUSED) |
7a6284c4 ILT |
537 | { |
538 | segT current_seg = now_seg; | |
539 | subsegT current_subseg = now_subseg; | |
540 | ||
541 | #ifdef TE_PE | |
542 | { | |
543 | segT sec; | |
544 | ||
545 | /* We could put it in .comment, but that creates an extra section | |
546 | that shouldn't be loaded into memory, which requires linker | |
547 | changes... For now, until proven otherwise, use .rdata. */ | |
548 | sec = subseg_new (".rdata$zzz", 0); | |
fd361982 | 549 | bfd_set_section_flags (sec, |
7a6284c4 ILT |
550 | ((SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_DATA) |
551 | & bfd_applicable_section_flags (stdoutput))); | |
552 | } | |
553 | #else | |
554 | subseg_new (".comment", 0); | |
555 | #endif | |
556 | ||
38a57ae7 | 557 | stringer (8 + 1); |
7a6284c4 ILT |
558 | subseg_set (current_seg, current_subseg); |
559 | } | |
560 | ||
a5324a3e NC |
561 | /* Handle .def directives. |
562 | ||
563 | One might ask : why can't we symbol_new if the symbol does not | |
564 | already exist and fill it with debug information. Because of | |
565 | the C_EFCN special symbol. It would clobber the value of the | |
566 | function symbol before we have a chance to notice that it is | |
567 | a C_EFCN. And a second reason is that the code is more clear this | |
568 | way. (at least I think it is :-). */ | |
252b5132 RH |
569 | |
570 | #define SKIP_SEMI_COLON() while (*input_line_pointer++ != ';') | |
571 | #define SKIP_WHITESPACES() while (*input_line_pointer == ' ' || \ | |
a5324a3e NC |
572 | *input_line_pointer == '\t') \ |
573 | input_line_pointer++; | |
252b5132 RH |
574 | |
575 | static void | |
a5324a3e | 576 | obj_coff_def (int what ATTRIBUTE_UNUSED) |
252b5132 | 577 | { |
a5324a3e NC |
578 | char name_end; /* Char after the end of name. */ |
579 | char *symbol_name; /* Name of the debug symbol. */ | |
580 | char *symbol_name_copy; /* Temporary copy of the name. */ | |
252b5132 RH |
581 | |
582 | if (def_symbol_in_progress != NULL) | |
583 | { | |
584 | as_warn (_(".def pseudo-op used inside of .def/.endef: ignored.")); | |
585 | demand_empty_rest_of_line (); | |
586 | return; | |
a5324a3e | 587 | } |
252b5132 RH |
588 | |
589 | SKIP_WHITESPACES (); | |
590 | ||
d02603dc | 591 | name_end = get_symbol_name (&symbol_name); |
29a2809e | 592 | symbol_name_copy = xstrdup (symbol_name); |
252b5132 RH |
593 | #ifdef tc_canonicalize_symbol_name |
594 | symbol_name_copy = tc_canonicalize_symbol_name (symbol_name_copy); | |
595 | #endif | |
596 | ||
a5324a3e | 597 | /* Initialize the new symbol. */ |
252b5132 | 598 | def_symbol_in_progress = symbol_make (symbol_name_copy); |
49309057 | 599 | symbol_set_frag (def_symbol_in_progress, &zero_address_frag); |
252b5132 RH |
600 | S_SET_VALUE (def_symbol_in_progress, 0); |
601 | ||
602 | if (S_IS_STRING (def_symbol_in_progress)) | |
603 | SF_SET_STRING (def_symbol_in_progress); | |
604 | ||
d02603dc | 605 | (void) restore_line_pointer (name_end); |
252b5132 RH |
606 | |
607 | demand_empty_rest_of_line (); | |
608 | } | |
609 | ||
252b5132 | 610 | static void |
a5324a3e | 611 | obj_coff_endef (int ignore ATTRIBUTE_UNUSED) |
252b5132 | 612 | { |
c9900432 | 613 | symbolS *symbolP = NULL; |
252b5132 | 614 | |
252b5132 RH |
615 | if (def_symbol_in_progress == NULL) |
616 | { | |
617 | as_warn (_(".endef pseudo-op used outside of .def/.endef: ignored.")); | |
618 | demand_empty_rest_of_line (); | |
619 | return; | |
a5324a3e | 620 | } |
252b5132 | 621 | |
dcd619be | 622 | /* Set the section number according to storage class. */ |
252b5132 RH |
623 | switch (S_GET_STORAGE_CLASS (def_symbol_in_progress)) |
624 | { | |
625 | case C_STRTAG: | |
626 | case C_ENTAG: | |
627 | case C_UNTAG: | |
628 | SF_SET_TAG (def_symbol_in_progress); | |
a5324a3e | 629 | /* Fall through. */ |
252b5132 RH |
630 | case C_FILE: |
631 | case C_TPDEF: | |
632 | SF_SET_DEBUG (def_symbol_in_progress); | |
633 | S_SET_SEGMENT (def_symbol_in_progress, fetch_coff_debug_section ()); | |
634 | break; | |
635 | ||
636 | case C_EFCN: | |
dcd619be | 637 | SF_SET_LOCAL (def_symbol_in_progress); /* Do not emit this symbol. */ |
a5324a3e | 638 | /* Fall through. */ |
252b5132 | 639 | case C_BLOCK: |
a5324a3e NC |
640 | SF_SET_PROCESS (def_symbol_in_progress); /* Will need processing before writing. */ |
641 | /* Fall through. */ | |
252b5132 RH |
642 | case C_FCN: |
643 | { | |
5a38dc70 | 644 | const char *name; |
a5324a3e | 645 | |
252b5132 RH |
646 | S_SET_SEGMENT (def_symbol_in_progress, text_section); |
647 | ||
49309057 | 648 | name = S_GET_NAME (def_symbol_in_progress); |
23dab925 | 649 | if (name[0] == '.' && name[2] == 'f' && name[3] == '\0') |
cc8a6dd0 | 650 | { |
23dab925 ILT |
651 | switch (name[1]) |
652 | { | |
dcd619be | 653 | case 'b': |
23dab925 ILT |
654 | /* .bf */ |
655 | if (! in_function ()) | |
656 | as_warn (_("`%s' symbol without preceding function"), name); | |
657 | /* Will need relocating. */ | |
658 | SF_SET_PROCESS (def_symbol_in_progress); | |
659 | clear_function (); | |
660 | break; | |
661 | #ifdef TE_PE | |
dcd619be | 662 | case 'e': |
23dab925 ILT |
663 | /* .ef */ |
664 | /* The MS compilers output the actual endline, not the | |
665 | function-relative one... we want to match without | |
666 | changing the assembler input. */ | |
dcd619be | 667 | SA_SET_SYM_LNNO (def_symbol_in_progress, |
23dab925 ILT |
668 | (SA_GET_SYM_LNNO (def_symbol_in_progress) |
669 | + coff_line_base)); | |
670 | break; | |
671 | #endif | |
672 | } | |
252b5132 RH |
673 | } |
674 | } | |
675 | break; | |
676 | ||
677 | #ifdef C_AUTOARG | |
678 | case C_AUTOARG: | |
679 | #endif /* C_AUTOARG */ | |
680 | case C_AUTO: | |
681 | case C_REG: | |
682 | case C_ARG: | |
683 | case C_REGPARM: | |
684 | case C_FIELD: | |
56385375 L |
685 | |
686 | /* According to the COFF documentation: | |
687 | ||
688 | http://osr5doc.sco.com:1996/topics/COFF_SectNumFld.html | |
689 | ||
690 | A special section number (-2) marks symbolic debugging symbols, | |
691 | including structure/union/enumeration tag names, typedefs, and | |
dcd619be | 692 | the name of the file. A section number of -1 indicates that the |
56385375 | 693 | symbol has a value but is not relocatable. Examples of |
dcd619be KH |
694 | absolute-valued symbols include automatic and register variables, |
695 | function arguments, and .eos symbols. | |
56385375 L |
696 | |
697 | But from Ian Lance Taylor: | |
698 | ||
699 | http://sources.redhat.com/ml/binutils/2000-08/msg00202.html | |
700 | ||
701 | the actual tools all marked them as section -1. So the GNU COFF | |
702 | assembler follows historical COFF assemblers. | |
703 | ||
704 | However, it causes problems for djgpp | |
705 | ||
706 | http://sources.redhat.com/ml/binutils/2000-08/msg00210.html | |
707 | ||
708 | By defining STRICTCOFF, a COFF port can make the assembler to | |
dcd619be | 709 | follow the documented behavior. */ |
56385375 | 710 | #ifdef STRICTCOFF |
252b5132 RH |
711 | case C_MOS: |
712 | case C_MOE: | |
713 | case C_MOU: | |
714 | case C_EOS: | |
56385375 | 715 | #endif |
d1d8ba22 | 716 | SF_SET_DEBUG (def_symbol_in_progress); |
252b5132 RH |
717 | S_SET_SEGMENT (def_symbol_in_progress, absolute_section); |
718 | break; | |
719 | ||
56385375 L |
720 | #ifndef STRICTCOFF |
721 | case C_MOS: | |
722 | case C_MOE: | |
723 | case C_MOU: | |
724 | case C_EOS: | |
725 | S_SET_SEGMENT (def_symbol_in_progress, absolute_section); | |
726 | break; | |
727 | #endif | |
728 | ||
252b5132 RH |
729 | case C_EXT: |
730 | case C_WEAKEXT: | |
731 | #ifdef TE_PE | |
732 | case C_NT_WEAK: | |
733 | #endif | |
734 | case C_STAT: | |
735 | case C_LABEL: | |
a5324a3e | 736 | /* Valid but set somewhere else (s_comm, s_lcomm, colon). */ |
252b5132 RH |
737 | break; |
738 | ||
739 | default: | |
740 | case C_USTATIC: | |
741 | case C_EXTDEF: | |
742 | case C_ULABEL: | |
743 | as_warn (_("unexpected storage class %d"), | |
744 | S_GET_STORAGE_CLASS (def_symbol_in_progress)); | |
745 | break; | |
a5324a3e | 746 | } |
252b5132 RH |
747 | |
748 | /* Now that we have built a debug symbol, try to find if we should | |
749 | merge with an existing symbol or not. If a symbol is C_EFCN or | |
9690c54d ILT |
750 | absolute_section or untagged SEG_DEBUG it never merges. We also |
751 | don't merge labels, which are in a different namespace, nor | |
752 | symbols which have not yet been defined since they are typically | |
753 | unique, nor do we merge tags with non-tags. */ | |
252b5132 RH |
754 | |
755 | /* Two cases for functions. Either debug followed by definition or | |
756 | definition followed by debug. For definition first, we will | |
757 | merge the debug symbol into the definition. For debug first, the | |
758 | lineno entry MUST point to the definition function or else it | |
759 | will point off into space when obj_crawl_symbol_chain() merges | |
760 | the debug symbol into the real symbol. Therefor, let's presume | |
dcd619be | 761 | the debug symbol is a real function reference. */ |
252b5132 RH |
762 | |
763 | /* FIXME-SOON If for some reason the definition label/symbol is | |
764 | never seen, this will probably leave an undefined symbol at link | |
dcd619be | 765 | time. */ |
252b5132 RH |
766 | |
767 | if (S_GET_STORAGE_CLASS (def_symbol_in_progress) == C_EFCN | |
9690c54d | 768 | || S_GET_STORAGE_CLASS (def_symbol_in_progress) == C_LABEL |
fd361982 | 769 | || (streq (bfd_section_name (S_GET_SEGMENT (def_symbol_in_progress)), |
a5324a3e | 770 | "*DEBUG*") |
252b5132 RH |
771 | && !SF_GET_TAG (def_symbol_in_progress)) |
772 | || S_GET_SEGMENT (def_symbol_in_progress) == absolute_section | |
9690c54d | 773 | || ! symbol_constant_p (def_symbol_in_progress) |
91c4c449 | 774 | || (symbolP = symbol_find (S_GET_NAME (def_symbol_in_progress))) == NULL |
9690c54d | 775 | || SF_GET_TAG (def_symbol_in_progress) != SF_GET_TAG (symbolP)) |
252b5132 | 776 | { |
9690c54d | 777 | /* If it already is at the end of the symbol list, do nothing */ |
252b5132 | 778 | if (def_symbol_in_progress != symbol_lastP) |
cc8a6dd0 | 779 | { |
9690c54d ILT |
780 | symbol_remove (def_symbol_in_progress, &symbol_rootP, &symbol_lastP); |
781 | symbol_append (def_symbol_in_progress, symbol_lastP, &symbol_rootP, | |
782 | &symbol_lastP); | |
cc8a6dd0 | 783 | } |
252b5132 RH |
784 | } |
785 | else | |
786 | { | |
787 | /* This symbol already exists, merge the newly created symbol | |
788 | into the old one. This is not mandatory. The linker can | |
789 | handle duplicate symbols correctly. But I guess that it save | |
790 | a *lot* of space if the assembly file defines a lot of | |
a5324a3e | 791 | symbols. [loic] */ |
252b5132 RH |
792 | |
793 | /* The debug entry (def_symbol_in_progress) is merged into the | |
dcd619be | 794 | previous definition. */ |
252b5132 RH |
795 | |
796 | c_symbol_merge (def_symbol_in_progress, symbolP); | |
797 | symbol_remove (def_symbol_in_progress, &symbol_rootP, &symbol_lastP); | |
798 | ||
799 | def_symbol_in_progress = symbolP; | |
800 | ||
801 | if (SF_GET_FUNCTION (def_symbol_in_progress) | |
802 | || SF_GET_TAG (def_symbol_in_progress) | |
803 | || S_GET_STORAGE_CLASS (def_symbol_in_progress) == C_STAT) | |
804 | { | |
805 | /* For functions, and tags, and static symbols, the symbol | |
806 | *must* be where the debug symbol appears. Move the | |
dcd619be | 807 | existing symbol to the current place. */ |
a5324a3e | 808 | /* If it already is at the end of the symbol list, do nothing. */ |
252b5132 RH |
809 | if (def_symbol_in_progress != symbol_lastP) |
810 | { | |
811 | symbol_remove (def_symbol_in_progress, &symbol_rootP, &symbol_lastP); | |
812 | symbol_append (def_symbol_in_progress, symbol_lastP, &symbol_rootP, &symbol_lastP); | |
813 | } | |
814 | } | |
815 | } | |
816 | ||
817 | if (SF_GET_TAG (def_symbol_in_progress)) | |
818 | { | |
819 | symbolS *oldtag; | |
820 | ||
91c4c449 | 821 | oldtag = symbol_find (S_GET_NAME (def_symbol_in_progress)); |
252b5132 RH |
822 | if (oldtag == NULL || ! SF_GET_TAG (oldtag)) |
823 | tag_insert (S_GET_NAME (def_symbol_in_progress), | |
824 | def_symbol_in_progress); | |
825 | } | |
826 | ||
827 | if (SF_GET_FUNCTION (def_symbol_in_progress)) | |
828 | { | |
252b5132 RH |
829 | set_function (def_symbol_in_progress); |
830 | SF_SET_PROCESS (def_symbol_in_progress); | |
831 | ||
832 | if (symbolP == NULL) | |
a5324a3e NC |
833 | /* That is, if this is the first time we've seen the |
834 | function. */ | |
835 | symbol_table_insert (def_symbol_in_progress); | |
836 | ||
837 | } | |
252b5132 RH |
838 | |
839 | def_symbol_in_progress = NULL; | |
840 | demand_empty_rest_of_line (); | |
841 | } | |
842 | ||
843 | static void | |
a5324a3e | 844 | obj_coff_dim (int ignore ATTRIBUTE_UNUSED) |
252b5132 | 845 | { |
91d6fa6a | 846 | int d_index; |
252b5132 RH |
847 | |
848 | if (def_symbol_in_progress == NULL) | |
849 | { | |
850 | as_warn (_(".dim pseudo-op used outside of .def/.endef: ignored.")); | |
851 | demand_empty_rest_of_line (); | |
852 | return; | |
a5324a3e | 853 | } |
252b5132 RH |
854 | |
855 | S_SET_NUMBER_AUXILIARY (def_symbol_in_progress, 1); | |
856 | ||
91d6fa6a | 857 | for (d_index = 0; d_index < DIMNUM; d_index++) |
252b5132 RH |
858 | { |
859 | SKIP_WHITESPACES (); | |
91d6fa6a | 860 | SA_SET_SYM_DIMEN (def_symbol_in_progress, d_index, |
252b5132 RH |
861 | get_absolute_expression ()); |
862 | ||
863 | switch (*input_line_pointer) | |
864 | { | |
865 | case ',': | |
866 | input_line_pointer++; | |
867 | break; | |
868 | ||
869 | default: | |
870 | as_warn (_("badly formed .dim directive ignored")); | |
a5324a3e | 871 | /* Fall through. */ |
252b5132 RH |
872 | case '\n': |
873 | case ';': | |
91d6fa6a | 874 | d_index = DIMNUM; |
252b5132 RH |
875 | break; |
876 | } | |
877 | } | |
878 | ||
879 | demand_empty_rest_of_line (); | |
880 | } | |
881 | ||
882 | static void | |
a5324a3e | 883 | obj_coff_line (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
884 | { |
885 | int this_base; | |
886 | ||
887 | if (def_symbol_in_progress == NULL) | |
888 | { | |
889 | /* Probably stabs-style line? */ | |
890 | obj_coff_ln (0); | |
891 | return; | |
892 | } | |
893 | ||
894 | this_base = get_absolute_expression (); | |
a5324a3e | 895 | if (streq (".bf", S_GET_NAME (def_symbol_in_progress))) |
252b5132 RH |
896 | coff_line_base = this_base; |
897 | ||
898 | S_SET_NUMBER_AUXILIARY (def_symbol_in_progress, 1); | |
23dab925 | 899 | SA_SET_SYM_LNNO (def_symbol_in_progress, this_base); |
252b5132 RH |
900 | |
901 | demand_empty_rest_of_line (); | |
902 | ||
903 | #ifndef NO_LISTING | |
a5324a3e | 904 | if (streq (".bf", S_GET_NAME (def_symbol_in_progress))) |
252b5132 RH |
905 | { |
906 | extern int listing; | |
907 | ||
908 | if (listing) | |
23dab925 | 909 | listing_source_line ((unsigned int) this_base); |
252b5132 RH |
910 | } |
911 | #endif | |
912 | } | |
913 | ||
914 | static void | |
a5324a3e | 915 | obj_coff_size (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
916 | { |
917 | if (def_symbol_in_progress == NULL) | |
918 | { | |
33eaf5de | 919 | as_warn (_(".size pseudo-op used outside of .def/.endef: ignored.")); |
252b5132 RH |
920 | demand_empty_rest_of_line (); |
921 | return; | |
a5324a3e | 922 | } |
252b5132 RH |
923 | |
924 | S_SET_NUMBER_AUXILIARY (def_symbol_in_progress, 1); | |
925 | SA_SET_SYM_SIZE (def_symbol_in_progress, get_absolute_expression ()); | |
926 | demand_empty_rest_of_line (); | |
927 | } | |
928 | ||
929 | static void | |
a5324a3e | 930 | obj_coff_scl (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
931 | { |
932 | if (def_symbol_in_progress == NULL) | |
933 | { | |
33eaf5de | 934 | as_warn (_(".scl pseudo-op used outside of .def/.endef: ignored.")); |
252b5132 RH |
935 | demand_empty_rest_of_line (); |
936 | return; | |
a5324a3e | 937 | } |
252b5132 RH |
938 | |
939 | S_SET_STORAGE_CLASS (def_symbol_in_progress, get_absolute_expression ()); | |
940 | demand_empty_rest_of_line (); | |
941 | } | |
942 | ||
943 | static void | |
a5324a3e | 944 | obj_coff_tag (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
945 | { |
946 | char *symbol_name; | |
947 | char name_end; | |
948 | ||
949 | if (def_symbol_in_progress == NULL) | |
950 | { | |
33eaf5de | 951 | as_warn (_(".tag pseudo-op used outside of .def/.endef: ignored.")); |
252b5132 RH |
952 | demand_empty_rest_of_line (); |
953 | return; | |
954 | } | |
955 | ||
956 | S_SET_NUMBER_AUXILIARY (def_symbol_in_progress, 1); | |
d02603dc | 957 | name_end = get_symbol_name (&symbol_name); |
252b5132 RH |
958 | |
959 | #ifdef tc_canonicalize_symbol_name | |
960 | symbol_name = tc_canonicalize_symbol_name (symbol_name); | |
961 | #endif | |
962 | ||
963 | /* Assume that the symbol referred to by .tag is always defined. | |
dcd619be | 964 | This was a bad assumption. I've added find_or_make. xoxorich. */ |
252b5132 RH |
965 | SA_SET_SYM_TAGNDX (def_symbol_in_progress, |
966 | tag_find_or_make (symbol_name)); | |
967 | if (SA_GET_SYM_TAGNDX (def_symbol_in_progress) == 0L) | |
a5324a3e | 968 | as_warn (_("tag not found for .tag %s"), symbol_name); |
252b5132 RH |
969 | |
970 | SF_SET_TAGGED (def_symbol_in_progress); | |
252b5132 | 971 | |
d02603dc | 972 | (void) restore_line_pointer (name_end); |
252b5132 RH |
973 | demand_empty_rest_of_line (); |
974 | } | |
975 | ||
976 | static void | |
a5324a3e | 977 | obj_coff_type (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
978 | { |
979 | if (def_symbol_in_progress == NULL) | |
980 | { | |
33eaf5de | 981 | as_warn (_(".type pseudo-op used outside of .def/.endef: ignored.")); |
252b5132 RH |
982 | demand_empty_rest_of_line (); |
983 | return; | |
a5324a3e | 984 | } |
252b5132 RH |
985 | |
986 | S_SET_DATA_TYPE (def_symbol_in_progress, get_absolute_expression ()); | |
987 | ||
988 | if (ISFCN (S_GET_DATA_TYPE (def_symbol_in_progress)) && | |
989 | S_GET_STORAGE_CLASS (def_symbol_in_progress) != C_TPDEF) | |
a5324a3e | 990 | SF_SET_FUNCTION (def_symbol_in_progress); |
252b5132 RH |
991 | |
992 | demand_empty_rest_of_line (); | |
993 | } | |
994 | ||
995 | static void | |
a5324a3e | 996 | obj_coff_val (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
997 | { |
998 | if (def_symbol_in_progress == NULL) | |
999 | { | |
33eaf5de | 1000 | as_warn (_(".val pseudo-op used outside of .def/.endef: ignored.")); |
252b5132 RH |
1001 | demand_empty_rest_of_line (); |
1002 | return; | |
a5324a3e | 1003 | } |
252b5132 RH |
1004 | |
1005 | if (is_name_beginner (*input_line_pointer)) | |
1006 | { | |
d02603dc NC |
1007 | char *symbol_name; |
1008 | char name_end = get_symbol_name (&symbol_name); | |
252b5132 RH |
1009 | |
1010 | #ifdef tc_canonicalize_symbol_name | |
d02603dc | 1011 | symbol_name = tc_canonicalize_symbol_name (symbol_name); |
252b5132 | 1012 | #endif |
a5324a3e | 1013 | if (streq (symbol_name, ".")) |
252b5132 | 1014 | { |
a5324a3e | 1015 | /* If the .val is != from the .def (e.g. statics). */ |
49309057 | 1016 | symbol_set_frag (def_symbol_in_progress, frag_now); |
252b5132 | 1017 | S_SET_VALUE (def_symbol_in_progress, (valueT) frag_now_fix ()); |
252b5132 | 1018 | } |
a5324a3e | 1019 | else if (! streq (S_GET_NAME (def_symbol_in_progress), symbol_name)) |
252b5132 | 1020 | { |
49309057 ILT |
1021 | expressionS exp; |
1022 | ||
1023 | exp.X_op = O_symbol; | |
1024 | exp.X_add_symbol = symbol_find_or_make (symbol_name); | |
1025 | exp.X_op_symbol = NULL; | |
1026 | exp.X_add_number = 0; | |
1027 | symbol_set_value_expression (def_symbol_in_progress, &exp); | |
252b5132 RH |
1028 | |
1029 | /* If the segment is undefined when the forward reference is | |
1030 | resolved, then copy the segment id from the forward | |
1031 | symbol. */ | |
1032 | SF_SET_GET_SEGMENT (def_symbol_in_progress); | |
0561a208 ILT |
1033 | |
1034 | /* FIXME: gcc can generate address expressions here in | |
1035 | unusual cases (search for "obscure" in sdbout.c). We | |
1036 | just ignore the offset here, thus generating incorrect | |
1037 | debugging information. We ignore the rest of the line | |
1038 | just below. */ | |
252b5132 | 1039 | } |
0561a208 | 1040 | /* Otherwise, it is the name of a non debug symbol and its value |
dcd619be | 1041 | will be calculated later. */ |
d02603dc | 1042 | (void) restore_line_pointer (name_end); |
252b5132 RH |
1043 | } |
1044 | else | |
1045 | { | |
1046 | S_SET_VALUE (def_symbol_in_progress, get_absolute_expression ()); | |
a5324a3e | 1047 | } |
252b5132 RH |
1048 | |
1049 | demand_empty_rest_of_line (); | |
1050 | } | |
1051 | ||
977cdf5a NC |
1052 | #ifdef TE_PE |
1053 | ||
1054 | /* Return nonzero if name begins with weak alternate symbol prefix. */ | |
1055 | ||
1056 | static int | |
1057 | weak_is_altname (const char * name) | |
1058 | { | |
e9b095a5 | 1059 | return startswith (name, weak_altprefix); |
977cdf5a NC |
1060 | } |
1061 | ||
1062 | /* Return the name of the alternate symbol | |
1063 | name corresponding to a weak symbol's name. */ | |
1064 | ||
1065 | static const char * | |
1066 | weak_name2altname (const char * name) | |
1067 | { | |
29a2809e | 1068 | return concat (weak_altprefix, name, (char *) NULL); |
977cdf5a NC |
1069 | } |
1070 | ||
a5324a3e | 1071 | /* Return the name of the weak symbol corresponding to an |
708587a4 | 1072 | alternate symbol. */ |
977cdf5a NC |
1073 | |
1074 | static const char * | |
1075 | weak_altname2name (const char * name) | |
1076 | { | |
9c2799c2 | 1077 | gas_assert (weak_is_altname (name)); |
b851162a | 1078 | return xstrdup (name + 6); |
977cdf5a NC |
1079 | } |
1080 | ||
1081 | /* Make a weak symbol name unique by | |
1082 | appending the name of an external symbol. */ | |
1083 | ||
1084 | static const char * | |
1085 | weak_uniquify (const char * name) | |
1086 | { | |
977cdf5a NC |
1087 | const char * unique = ""; |
1088 | ||
22ba0981 | 1089 | #ifdef TE_PE |
977cdf5a NC |
1090 | if (an_external_name != NULL) |
1091 | unique = an_external_name; | |
1092 | #endif | |
9c2799c2 | 1093 | gas_assert (weak_is_altname (name)); |
977cdf5a | 1094 | |
29a2809e | 1095 | return concat (name, ".", unique, (char *) NULL); |
977cdf5a NC |
1096 | } |
1097 | ||
06e77878 AO |
1098 | void |
1099 | pecoff_obj_set_weak_hook (symbolS *symbolP) | |
1100 | { | |
1101 | symbolS *alternateP; | |
1102 | ||
1103 | /* See _Microsoft Portable Executable and Common Object | |
1104 | File Format Specification_, section 5.5.3. | |
1105 | Create a symbol representing the alternate value. | |
1106 | coff_frob_symbol will set the value of this symbol from | |
1107 | the value of the weak symbol itself. */ | |
1108 | S_SET_STORAGE_CLASS (symbolP, C_NT_WEAK); | |
1109 | S_SET_NUMBER_AUXILIARY (symbolP, 1); | |
1110 | SA_SET_SYM_FSIZE (symbolP, IMAGE_WEAK_EXTERN_SEARCH_NOLIBRARY); | |
1111 | ||
1112 | alternateP = symbol_find_or_make (weak_name2altname (S_GET_NAME (symbolP))); | |
1113 | S_SET_EXTERNAL (alternateP); | |
1114 | S_SET_STORAGE_CLASS (alternateP, C_NT_WEAK); | |
1115 | ||
1116 | SA_SET_SYM_TAGNDX (symbolP, alternateP); | |
1117 | } | |
1118 | ||
1119 | void | |
1120 | pecoff_obj_clear_weak_hook (symbolS *symbolP) | |
1121 | { | |
1122 | symbolS *alternateP; | |
1123 | ||
1124 | S_SET_STORAGE_CLASS (symbolP, 0); | |
1125 | SA_SET_SYM_FSIZE (symbolP, 0); | |
1126 | ||
1127 | alternateP = symbol_find (weak_name2altname (S_GET_NAME (symbolP))); | |
1128 | S_CLEAR_EXTERNAL (alternateP); | |
1129 | } | |
1130 | ||
977cdf5a NC |
1131 | #endif /* TE_PE */ |
1132 | ||
c87db184 | 1133 | /* Handle .weak. This is a GNU extension in formats other than PE. */ |
977cdf5a | 1134 | |
c87db184 | 1135 | static void |
977cdf5a | 1136 | obj_coff_weak (int ignore ATTRIBUTE_UNUSED) |
c87db184 CF |
1137 | { |
1138 | char *name; | |
1139 | int c; | |
1140 | symbolS *symbolP; | |
1141 | ||
1142 | do | |
1143 | { | |
d02603dc | 1144 | c = get_symbol_name (&name); |
c87db184 CF |
1145 | if (*name == 0) |
1146 | { | |
1147 | as_warn (_("badly formed .weak directive ignored")); | |
1148 | ignore_rest_of_line (); | |
1149 | return; | |
1150 | } | |
977cdf5a | 1151 | c = 0; |
c87db184 CF |
1152 | symbolP = symbol_find_or_make (name); |
1153 | *input_line_pointer = c; | |
d02603dc | 1154 | SKIP_WHITESPACE_AFTER_NAME (); |
c87db184 | 1155 | S_SET_WEAK (symbolP); |
c87db184 | 1156 | |
c87db184 CF |
1157 | if (c == ',') |
1158 | { | |
1159 | input_line_pointer++; | |
1160 | SKIP_WHITESPACE (); | |
1161 | if (*input_line_pointer == '\n') | |
1162 | c = '\n'; | |
1163 | } | |
1164 | ||
1165 | } | |
1166 | while (c == ','); | |
1167 | ||
1168 | demand_empty_rest_of_line (); | |
1169 | } | |
1170 | ||
252b5132 | 1171 | void |
a5324a3e | 1172 | coff_obj_read_begin_hook (void) |
252b5132 | 1173 | { |
dcd619be | 1174 | /* These had better be the same. Usually 18 bytes. */ |
252b5132 RH |
1175 | know (sizeof (SYMENT) == sizeof (AUXENT)); |
1176 | know (SYMESZ == AUXESZ); | |
252b5132 RH |
1177 | tag_init (); |
1178 | } | |
1179 | ||
252b5132 | 1180 | symbolS *coff_last_function; |
17fc154e | 1181 | #ifndef OBJ_XCOFF |
252b5132 | 1182 | static symbolS *coff_last_bf; |
17fc154e | 1183 | #endif |
252b5132 RH |
1184 | |
1185 | void | |
a5324a3e | 1186 | coff_frob_symbol (symbolS *symp, int *punt) |
252b5132 RH |
1187 | { |
1188 | static symbolS *last_tagP; | |
1189 | static stack *block_stack; | |
1190 | static symbolS *set_end; | |
1191 | symbolS *next_set_end = NULL; | |
1192 | ||
1193 | if (symp == &abs_symbol) | |
1194 | { | |
1195 | *punt = 1; | |
1196 | return; | |
1197 | } | |
1198 | ||
1199 | if (current_lineno_sym) | |
a5324a3e | 1200 | coff_add_linesym (NULL); |
252b5132 RH |
1201 | |
1202 | if (!block_stack) | |
1203 | block_stack = stack_init (512, sizeof (symbolS*)); | |
1204 | ||
252b5132 | 1205 | #ifdef TE_PE |
977cdf5a NC |
1206 | if (S_GET_STORAGE_CLASS (symp) == C_NT_WEAK |
1207 | && ! S_IS_WEAK (symp) | |
1208 | && weak_is_altname (S_GET_NAME (symp))) | |
1209 | { | |
1210 | /* This is a weak alternate symbol. All processing of | |
1211 | PECOFFweak symbols is done here, through the alternate. */ | |
06e77878 AO |
1212 | symbolS *weakp = symbol_find_noref (weak_altname2name |
1213 | (S_GET_NAME (symp)), 1); | |
977cdf5a | 1214 | |
9c2799c2 NC |
1215 | gas_assert (weakp); |
1216 | gas_assert (S_GET_NUMBER_AUXILIARY (weakp) == 1); | |
977cdf5a | 1217 | |
06e77878 AO |
1218 | if (! S_IS_WEAK (weakp)) |
1219 | { | |
1220 | /* The symbol was turned from weak to strong. Discard altname. */ | |
1221 | *punt = 1; | |
1222 | return; | |
1223 | } | |
1224 | else if (symbol_equated_p (weakp)) | |
977cdf5a NC |
1225 | { |
1226 | /* The weak symbol has an alternate specified; symp is unneeded. */ | |
1227 | S_SET_STORAGE_CLASS (weakp, C_NT_WEAK); | |
1228 | SA_SET_SYM_TAGNDX (weakp, | |
1229 | symbol_get_value_expression (weakp)->X_add_symbol); | |
1230 | ||
1231 | S_CLEAR_EXTERNAL (symp); | |
1232 | *punt = 1; | |
1233 | return; | |
1234 | } | |
1235 | else | |
1236 | { | |
1237 | /* The weak symbol has been assigned an alternate value. | |
1238 | Copy this value to symp, and set symp as weakp's alternate. */ | |
1239 | if (S_GET_STORAGE_CLASS (weakp) != C_NT_WEAK) | |
1240 | { | |
1241 | S_SET_STORAGE_CLASS (symp, S_GET_STORAGE_CLASS (weakp)); | |
1242 | S_SET_STORAGE_CLASS (weakp, C_NT_WEAK); | |
1243 | } | |
1244 | ||
1245 | if (S_IS_DEFINED (weakp)) | |
1246 | { | |
1247 | /* This is a defined weak symbol. Copy value information | |
1248 | from the weak symbol itself to the alternate symbol. */ | |
1249 | symbol_set_value_expression (symp, | |
1250 | symbol_get_value_expression (weakp)); | |
1251 | symbol_set_frag (symp, symbol_get_frag (weakp)); | |
1252 | S_SET_SEGMENT (symp, S_GET_SEGMENT (weakp)); | |
1253 | } | |
1254 | else | |
1255 | { | |
1256 | /* This is an undefined weak symbol. | |
1257 | Define the alternate symbol to zero. */ | |
1258 | S_SET_VALUE (symp, 0); | |
1259 | S_SET_SEGMENT (symp, absolute_section); | |
1260 | } | |
1261 | ||
1262 | S_SET_NAME (symp, weak_uniquify (S_GET_NAME (symp))); | |
1263 | S_SET_STORAGE_CLASS (symp, C_EXT); | |
1264 | ||
1265 | S_SET_VALUE (weakp, 0); | |
1266 | S_SET_SEGMENT (weakp, undefined_section); | |
1267 | } | |
252b5132 | 1268 | } |
977cdf5a NC |
1269 | #else /* TE_PE */ |
1270 | if (S_IS_WEAK (symp)) | |
1271 | S_SET_STORAGE_CLASS (symp, C_WEAKEXT); | |
1272 | #endif /* TE_PE */ | |
252b5132 RH |
1273 | |
1274 | if (!S_IS_DEFINED (symp) | |
1275 | && !S_IS_WEAK (symp) | |
1276 | && S_GET_STORAGE_CLASS (symp) != C_STAT) | |
1277 | S_SET_STORAGE_CLASS (symp, C_EXT); | |
1278 | ||
1279 | if (!SF_GET_DEBUG (symp)) | |
1280 | { | |
bdbe95c8 NC |
1281 | symbolS * real; |
1282 | ||
252b5132 RH |
1283 | if (!SF_GET_LOCAL (symp) |
1284 | && !SF_GET_STATICS (symp) | |
39da8128 | 1285 | && S_GET_STORAGE_CLASS (symp) != C_LABEL |
a5324a3e | 1286 | && symbol_constant_p (symp) |
06e77878 | 1287 | && (real = symbol_find_noref (S_GET_NAME (symp), 1)) |
bdbe95c8 | 1288 | && S_GET_STORAGE_CLASS (real) == C_NULL |
252b5132 RH |
1289 | && real != symp) |
1290 | { | |
1291 | c_symbol_merge (symp, real); | |
1292 | *punt = 1; | |
39da8128 | 1293 | return; |
252b5132 | 1294 | } |
bdbe95c8 | 1295 | |
5e0d736c | 1296 | if (!S_IS_DEFINED (symp) && !SF_GET_LOCAL (symp)) |
252b5132 | 1297 | { |
9c2799c2 | 1298 | gas_assert (S_GET_VALUE (symp) == 0); |
06e77878 AO |
1299 | if (S_IS_WEAKREFD (symp)) |
1300 | *punt = 1; | |
1301 | else | |
1302 | S_SET_EXTERNAL (symp); | |
5e0d736c DD |
1303 | } |
1304 | else if (S_GET_STORAGE_CLASS (symp) == C_NULL) | |
1305 | { | |
1306 | if (S_GET_SEGMENT (symp) == text_section | |
1307 | && symp != seg_info (text_section)->sym) | |
1308 | S_SET_STORAGE_CLASS (symp, C_LABEL); | |
252b5132 | 1309 | else |
5e0d736c | 1310 | S_SET_STORAGE_CLASS (symp, C_STAT); |
252b5132 | 1311 | } |
bdbe95c8 | 1312 | |
252b5132 RH |
1313 | if (SF_GET_PROCESS (symp)) |
1314 | { | |
1315 | if (S_GET_STORAGE_CLASS (symp) == C_BLOCK) | |
1316 | { | |
a5324a3e | 1317 | if (streq (S_GET_NAME (symp), ".bb")) |
252b5132 RH |
1318 | stack_push (block_stack, (char *) &symp); |
1319 | else | |
1320 | { | |
1321 | symbolS *begin; | |
bdbe95c8 | 1322 | |
252b5132 RH |
1323 | begin = *(symbolS **) stack_pop (block_stack); |
1324 | if (begin == 0) | |
1325 | as_warn (_("mismatched .eb")); | |
1326 | else | |
1327 | next_set_end = begin; | |
1328 | } | |
1329 | } | |
bdbe95c8 | 1330 | |
c207c2c6 KT |
1331 | if (coff_last_function == 0 && SF_GET_FUNCTION (symp) |
1332 | && S_IS_DEFINED (symp)) | |
252b5132 RH |
1333 | { |
1334 | union internal_auxent *auxp; | |
bdbe95c8 | 1335 | |
252b5132 RH |
1336 | coff_last_function = symp; |
1337 | if (S_GET_NUMBER_AUXILIARY (symp) < 1) | |
1338 | S_SET_NUMBER_AUXILIARY (symp, 1); | |
0561a208 | 1339 | auxp = SYM_AUXENT (symp); |
252b5132 RH |
1340 | memset (auxp->x_sym.x_fcnary.x_ary.x_dimen, 0, |
1341 | sizeof (auxp->x_sym.x_fcnary.x_ary.x_dimen)); | |
1342 | } | |
bdbe95c8 | 1343 | |
c207c2c6 KT |
1344 | if (S_GET_STORAGE_CLASS (symp) == C_EFCN |
1345 | && S_IS_DEFINED (symp)) | |
252b5132 RH |
1346 | { |
1347 | if (coff_last_function == 0) | |
161840f9 ILT |
1348 | as_fatal (_("C_EFCN symbol for %s out of scope"), |
1349 | S_GET_NAME (symp)); | |
252b5132 RH |
1350 | SA_SET_SYM_FSIZE (coff_last_function, |
1351 | (long) (S_GET_VALUE (symp) | |
1352 | - S_GET_VALUE (coff_last_function))); | |
1353 | next_set_end = coff_last_function; | |
1354 | coff_last_function = 0; | |
1355 | } | |
1356 | } | |
bdbe95c8 | 1357 | |
252b5132 RH |
1358 | if (S_IS_EXTERNAL (symp)) |
1359 | S_SET_STORAGE_CLASS (symp, C_EXT); | |
1360 | else if (SF_GET_LOCAL (symp)) | |
1361 | *punt = 1; | |
1362 | ||
1363 | if (SF_GET_FUNCTION (symp)) | |
49309057 | 1364 | symbol_get_bfdsym (symp)->flags |= BSF_FUNCTION; |
252b5132 RH |
1365 | } |
1366 | ||
8828d862 ILT |
1367 | /* Double check weak symbols. */ |
1368 | if (S_IS_WEAK (symp) && S_IS_COMMON (symp)) | |
1369 | as_bad (_("Symbol `%s' can not be both weak and common"), | |
1370 | S_GET_NAME (symp)); | |
1371 | ||
252b5132 RH |
1372 | if (SF_GET_TAG (symp)) |
1373 | last_tagP = symp; | |
1374 | else if (S_GET_STORAGE_CLASS (symp) == C_EOS) | |
1375 | next_set_end = last_tagP; | |
1376 | ||
1377 | #ifdef OBJ_XCOFF | |
1378 | /* This is pretty horrible, but we have to set *punt correctly in | |
1379 | order to call SA_SET_SYM_ENDNDX correctly. */ | |
809ffe0d | 1380 | if (! symbol_used_in_reloc_p (symp) |
97834047 | 1381 | && S_GET_STORAGE_CLASS (symp) != C_DWARF |
49309057 | 1382 | && ((symbol_get_bfdsym (symp)->flags & BSF_SECTION_SYM) != 0 |
670ec21d | 1383 | || (! (S_IS_EXTERNAL (symp) || S_IS_WEAK (symp)) |
809ffe0d | 1384 | && ! symbol_get_tc (symp)->output |
252b5132 RH |
1385 | && S_GET_STORAGE_CLASS (symp) != C_FILE))) |
1386 | *punt = 1; | |
1387 | #endif | |
1388 | ||
1389 | if (set_end != (symbolS *) NULL | |
1390 | && ! *punt | |
49309057 | 1391 | && ((symbol_get_bfdsym (symp)->flags & BSF_NOT_AT_END) != 0 |
252b5132 RH |
1392 | || (S_IS_DEFINED (symp) |
1393 | && ! S_IS_COMMON (symp) | |
1394 | && (! S_IS_EXTERNAL (symp) || SF_GET_FUNCTION (symp))))) | |
1395 | { | |
1396 | SA_SET_SYM_ENDNDX (set_end, symp); | |
1397 | set_end = NULL; | |
1398 | } | |
1399 | ||
a04b544b ILT |
1400 | if (next_set_end != NULL) |
1401 | { | |
1402 | if (set_end != NULL) | |
20203fb9 | 1403 | as_warn (_("Warning: internal error: forgetting to set endndx of %s"), |
a04b544b ILT |
1404 | S_GET_NAME (set_end)); |
1405 | set_end = next_set_end; | |
1406 | } | |
252b5132 | 1407 | |
8642cce8 | 1408 | #ifndef OBJ_XCOFF |
252b5132 RH |
1409 | if (! *punt |
1410 | && S_GET_STORAGE_CLASS (symp) == C_FCN | |
a5324a3e | 1411 | && streq (S_GET_NAME (symp), ".bf")) |
252b5132 RH |
1412 | { |
1413 | if (coff_last_bf != NULL) | |
1414 | SA_SET_SYM_ENDNDX (coff_last_bf, symp); | |
1415 | coff_last_bf = symp; | |
1416 | } | |
8642cce8 | 1417 | #endif |
49309057 | 1418 | if (coffsymbol (symbol_get_bfdsym (symp))->lineno) |
252b5132 RH |
1419 | { |
1420 | int i; | |
1421 | struct line_no *lptr; | |
1422 | alent *l; | |
1423 | ||
49309057 | 1424 | lptr = (struct line_no *) coffsymbol (symbol_get_bfdsym (symp))->lineno; |
252b5132 RH |
1425 | for (i = 0; lptr; lptr = lptr->next) |
1426 | i++; | |
49309057 | 1427 | lptr = (struct line_no *) coffsymbol (symbol_get_bfdsym (symp))->lineno; |
252b5132 RH |
1428 | |
1429 | /* We need i entries for line numbers, plus 1 for the first | |
1430 | entry which BFD will override, plus 1 for the last zero | |
1431 | entry (a marker for BFD). */ | |
add39d23 | 1432 | l = XNEWVEC (alent, (i + 2)); |
49309057 | 1433 | coffsymbol (symbol_get_bfdsym (symp))->lineno = l; |
252b5132 RH |
1434 | l[i + 1].line_number = 0; |
1435 | l[i + 1].u.sym = NULL; | |
1436 | for (; i > 0; i--) | |
1437 | { | |
1438 | if (lptr->frag) | |
bea9907b | 1439 | lptr->l.u.offset += lptr->frag->fr_address / OCTETS_PER_BYTE; |
252b5132 RH |
1440 | l[i] = lptr->l; |
1441 | lptr = lptr->next; | |
1442 | } | |
1443 | } | |
1444 | } | |
1445 | ||
1446 | void | |
a5324a3e NC |
1447 | coff_adjust_section_syms (bfd *abfd ATTRIBUTE_UNUSED, |
1448 | asection *sec, | |
1449 | void * x ATTRIBUTE_UNUSED) | |
252b5132 RH |
1450 | { |
1451 | symbolS *secsym; | |
1452 | segment_info_type *seginfo = seg_info (sec); | |
1453 | int nlnno, nrelocs = 0; | |
1454 | ||
1455 | /* RS/6000 gas creates a .debug section manually in ppc_frob_file in | |
1456 | tc-ppc.c. Do not get confused by it. */ | |
1457 | if (seginfo == NULL) | |
1458 | return; | |
1459 | ||
a5324a3e | 1460 | if (streq (sec->name, ".text")) |
252b5132 RH |
1461 | nlnno = coff_n_line_nos; |
1462 | else | |
1463 | nlnno = 0; | |
1464 | { | |
1465 | /* @@ Hope that none of the fixups expand to more than one reloc | |
1466 | entry... */ | |
1467 | fixS *fixp = seginfo->fix_root; | |
1468 | while (fixp) | |
1469 | { | |
1470 | if (! fixp->fx_done) | |
1471 | nrelocs++; | |
1472 | fixp = fixp->fx_next; | |
1473 | } | |
1474 | } | |
fd361982 | 1475 | if (bfd_section_size (sec) == 0 |
252b5132 RH |
1476 | && nrelocs == 0 |
1477 | && nlnno == 0 | |
1478 | && sec != text_section | |
1479 | && sec != data_section | |
1480 | && sec != bss_section) | |
1481 | return; | |
a5324a3e | 1482 | |
252b5132 | 1483 | secsym = section_symbol (sec); |
945a1a6b ILT |
1484 | /* This is an estimate; we'll plug in the real value using |
1485 | SET_SECTION_RELOCS later */ | |
97834047 CC |
1486 | #ifdef OBJ_XCOFF |
1487 | if (S_GET_STORAGE_CLASS (secsym) == C_DWARF) | |
1488 | SA_SET_SECT_NRELOC (secsym, nrelocs); | |
1489 | else | |
1490 | { | |
1491 | SA_SET_SCN_NRELOC (secsym, nrelocs); | |
1492 | SA_SET_SCN_NLINNO (secsym, nlnno); | |
1493 | } | |
1494 | #else | |
252b5132 RH |
1495 | SA_SET_SCN_NRELOC (secsym, nrelocs); |
1496 | SA_SET_SCN_NLINNO (secsym, nlnno); | |
97834047 | 1497 | #endif |
252b5132 RH |
1498 | } |
1499 | ||
1500 | void | |
a5324a3e | 1501 | coff_frob_file_after_relocs (void) |
252b5132 | 1502 | { |
a5324a3e | 1503 | bfd_map_over_sections (stdoutput, coff_adjust_section_syms, NULL); |
252b5132 RH |
1504 | } |
1505 | ||
6ff96af6 NC |
1506 | /* Implement the .section pseudo op: |
1507 | .section name {, "flags"} | |
1508 | ^ ^ | |
1509 | | +--- optional flags: 'b' for bss | |
1510 | | 'i' for info | |
1511 | +-- section name 'l' for lib | |
1512 | 'n' for noload | |
1513 | 'o' for over | |
1514 | 'w' for data | |
1515 | 'd' (apparently m88k for data) | |
c3489828 | 1516 | 'e' for exclude |
6ff96af6 NC |
1517 | 'x' for text |
1518 | 'r' for read-only data | |
1519 | 's' for shared data (PE) | |
63ad59ae | 1520 | 'y' for noread |
31907d5e | 1521 | '0' - '9' for power-of-two alignment (GNU extension). |
6ff96af6 NC |
1522 | But if the argument is not a quoted string, treat it as a |
1523 | subsegment number. | |
1524 | ||
1525 | Note the 'a' flag is silently ignored. This allows the same | |
1526 | .section directive to be parsed in both ELF and COFF formats. */ | |
252b5132 RH |
1527 | |
1528 | void | |
a5324a3e | 1529 | obj_coff_section (int ignore ATTRIBUTE_UNUSED) |
252b5132 | 1530 | { |
a5324a3e | 1531 | /* Strip out the section name. */ |
252b5132 RH |
1532 | char *section_name; |
1533 | char c; | |
31907d5e | 1534 | int alignment = -1; |
252b5132 RH |
1535 | char *name; |
1536 | unsigned int exp; | |
c9900432 | 1537 | flagword flags, oldflags; |
252b5132 | 1538 | asection *sec; |
5b7c81bd | 1539 | bool is_bss = false; |
252b5132 RH |
1540 | |
1541 | if (flag_mri) | |
1542 | { | |
1543 | char type; | |
1544 | ||
1545 | s_mri_sect (&type); | |
1546 | return; | |
1547 | } | |
1548 | ||
d02603dc | 1549 | c = get_symbol_name (§ion_name); |
29a2809e | 1550 | name = xmemdup0 (section_name, input_line_pointer - section_name); |
252b5132 | 1551 | *input_line_pointer = c; |
d02603dc | 1552 | SKIP_WHITESPACE_AFTER_NAME (); |
252b5132 RH |
1553 | |
1554 | exp = 0; | |
c9900432 | 1555 | flags = SEC_NO_FLAGS; |
252b5132 RH |
1556 | |
1557 | if (*input_line_pointer == ',') | |
1558 | { | |
1559 | ++input_line_pointer; | |
1560 | SKIP_WHITESPACE (); | |
1561 | if (*input_line_pointer != '"') | |
1562 | exp = get_absolute_expression (); | |
1563 | else | |
1564 | { | |
422fee64 NC |
1565 | unsigned char attr; |
1566 | int readonly_removed = 0; | |
1567 | int load_removed = 0; | |
1568 | ||
1569 | while (attr = *++input_line_pointer, | |
1570 | attr != '"' | |
1571 | && ! is_end_of_line[attr]) | |
252b5132 | 1572 | { |
31907d5e DK |
1573 | if (ISDIGIT (attr)) |
1574 | { | |
1575 | alignment = attr - '0'; | |
1576 | continue; | |
1577 | } | |
422fee64 | 1578 | switch (attr) |
252b5132 | 1579 | { |
c3489828 KT |
1580 | case 'e': |
1581 | /* Exclude section from linking. */ | |
1582 | flags |= SEC_EXCLUDE; | |
1583 | break; | |
1584 | ||
422fee64 NC |
1585 | case 'b': |
1586 | /* Uninitialised data section. */ | |
1587 | flags |= SEC_ALLOC; | |
1588 | flags &=~ SEC_LOAD; | |
5b7c81bd | 1589 | is_bss = true; |
422fee64 NC |
1590 | break; |
1591 | ||
1592 | case 'n': | |
1593 | /* Section not loaded. */ | |
1594 | flags &=~ SEC_LOAD; | |
1595 | flags |= SEC_NEVER_LOAD; | |
1596 | load_removed = 1; | |
1597 | break; | |
1598 | ||
1599 | case 's': | |
1600 | /* Shared section. */ | |
1601 | flags |= SEC_COFF_SHARED; | |
1602 | /* Fall through. */ | |
1603 | case 'd': | |
1604 | /* Data section. */ | |
1605 | flags |= SEC_DATA; | |
1606 | if (! load_removed) | |
1607 | flags |= SEC_LOAD; | |
1608 | flags &=~ SEC_READONLY; | |
1609 | break; | |
e96c5464 | 1610 | |
422fee64 NC |
1611 | case 'w': |
1612 | /* Writable section. */ | |
1613 | flags &=~ SEC_READONLY; | |
1614 | readonly_removed = 1; | |
1615 | break; | |
e96c5464 | 1616 | |
422fee64 NC |
1617 | case 'a': |
1618 | /* Ignore. Here for compatibility with ELF. */ | |
1619 | break; | |
1620 | ||
1621 | case 'r': /* Read-only section. Implies a data section. */ | |
1622 | readonly_removed = 0; | |
1623 | /* Fall through. */ | |
1624 | case 'x': /* Executable section. */ | |
1625 | /* If we are setting the 'x' attribute or if the 'r' | |
1626 | attribute is being used to restore the readonly status | |
1627 | of a code section (eg "wxr") then set the SEC_CODE flag, | |
1628 | otherwise set the SEC_DATA flag. */ | |
1629 | flags |= (attr == 'x' || (flags & SEC_CODE) ? SEC_CODE : SEC_DATA); | |
1630 | if (! load_removed) | |
1631 | flags |= SEC_LOAD; | |
1632 | /* Note - the READONLY flag is set here, even for the 'x' | |
708587a4 | 1633 | attribute in order to be compatible with the MSVC |
422fee64 NC |
1634 | linker. */ |
1635 | if (! readonly_removed) | |
1636 | flags |= SEC_READONLY; | |
1637 | break; | |
252b5132 | 1638 | |
63ad59ae KT |
1639 | case 'y': |
1640 | flags |= SEC_COFF_NOREAD | SEC_READONLY; | |
1641 | break; | |
1642 | ||
252b5132 RH |
1643 | case 'i': /* STYP_INFO */ |
1644 | case 'l': /* STYP_LIB */ | |
1645 | case 'o': /* STYP_OVER */ | |
422fee64 | 1646 | as_warn (_("unsupported section attribute '%c'"), attr); |
252b5132 RH |
1647 | break; |
1648 | ||
1649 | default: | |
422fee64 | 1650 | as_warn (_("unknown section attribute '%c'"), attr); |
252b5132 RH |
1651 | break; |
1652 | } | |
252b5132 | 1653 | } |
422fee64 | 1654 | if (attr == '"') |
252b5132 RH |
1655 | ++input_line_pointer; |
1656 | } | |
1657 | } | |
1658 | ||
1659 | sec = subseg_new (name, (subsegT) exp); | |
c207c2c6 | 1660 | |
b7780957 J |
1661 | if (is_bss) |
1662 | seg_info (sec)->bss = 1; | |
1663 | ||
31907d5e DK |
1664 | if (alignment >= 0) |
1665 | sec->alignment_power = alignment; | |
252b5132 | 1666 | |
fd361982 | 1667 | oldflags = bfd_section_flags (sec); |
c9900432 | 1668 | if (oldflags == SEC_NO_FLAGS) |
252b5132 | 1669 | { |
c9900432 NC |
1670 | /* Set section flags for a new section just created by subseg_new. |
1671 | Provide a default if no flags were parsed. */ | |
1672 | if (flags == SEC_NO_FLAGS) | |
1ad5eac0 | 1673 | flags = TC_COFF_SECTION_DEFAULT_ATTRIBUTES; |
dcd619be | 1674 | |
c9900432 NC |
1675 | #ifdef COFF_LONG_SECTION_NAMES |
1676 | /* Add SEC_LINK_ONCE and SEC_LINK_DUPLICATES_DISCARD to .gnu.linkonce | |
1677 | sections so adjust_reloc_syms in write.c will correctly handle | |
1678 | relocs which refer to non-local symbols in these sections. */ | |
e9b095a5 | 1679 | if (startswith (name, ".gnu.linkonce")) |
cc8a6dd0 | 1680 | flags |= SEC_LINK_ONCE | SEC_LINK_DUPLICATES_DISCARD; |
c9900432 | 1681 | #endif |
252b5132 | 1682 | |
fd361982 | 1683 | if (!bfd_set_section_flags (sec, flags)) |
cc8a6dd0 | 1684 | as_warn (_("error setting flags for \"%s\": %s"), |
fd361982 | 1685 | bfd_section_name (sec), |
cc8a6dd0 | 1686 | bfd_errmsg (bfd_get_error ())); |
c9900432 NC |
1687 | } |
1688 | else if (flags != SEC_NO_FLAGS) | |
1689 | { | |
a5324a3e | 1690 | /* This section's attributes have already been set. Warn if the |
c9900432 | 1691 | attributes don't match. */ |
5dd0794d | 1692 | flagword matchflags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_CODE |
63ad59ae KT |
1693 | | SEC_DATA | SEC_COFF_SHARED | SEC_NEVER_LOAD |
1694 | | SEC_COFF_NOREAD); | |
c9900432 NC |
1695 | if ((flags ^ oldflags) & matchflags) |
1696 | as_warn (_("Ignoring changed section attributes for %s"), name); | |
252b5132 RH |
1697 | } |
1698 | ||
1699 | demand_empty_rest_of_line (); | |
1700 | } | |
1701 | ||
1702 | void | |
a5324a3e | 1703 | coff_adjust_symtab (void) |
252b5132 RH |
1704 | { |
1705 | if (symbol_rootP == NULL | |
1706 | || S_GET_STORAGE_CLASS (symbol_rootP) != C_FILE) | |
c39e89c3 | 1707 | c_dot_file_symbol ("fake"); |
252b5132 RH |
1708 | } |
1709 | ||
1710 | void | |
a5324a3e | 1711 | coff_frob_section (segT sec) |
252b5132 RH |
1712 | { |
1713 | segT strsec; | |
1714 | char *p; | |
1715 | fragS *fragp; | |
87975d2a | 1716 | bfd_vma n_entries; |
252b5132 RH |
1717 | |
1718 | /* The COFF back end in BFD requires that all section sizes be | |
bea9907b TW |
1719 | rounded up to multiples of the corresponding section alignments, |
1720 | supposedly because standard COFF has no other way of encoding alignment | |
1721 | for sections. If your COFF flavor has a different way of encoding | |
dcd619be | 1722 | section alignment, then skip this step, as TICOFF does. */ |
fd361982 | 1723 | bfd_vma size = bfd_section_size (sec); |
bea9907b | 1724 | #if !defined(TICOFF) |
87975d2a AM |
1725 | bfd_vma align_power = (bfd_vma) sec->alignment_power + OCTETS_PER_BYTE_POWER; |
1726 | bfd_vma mask = ((bfd_vma) 1 << align_power) - 1; | |
1727 | ||
bc8f3910 AM |
1728 | if (!do_not_pad_sections_to_alignment |
1729 | && (size & mask) != 0) | |
252b5132 | 1730 | { |
7f788821 NC |
1731 | bfd_vma new_size; |
1732 | fragS *last; | |
dcd619be | 1733 | |
7f788821 | 1734 | new_size = (size + mask) & ~mask; |
fd361982 | 1735 | bfd_set_section_size (sec, new_size); |
7f788821 NC |
1736 | |
1737 | /* If the size had to be rounded up, add some padding in | |
1738 | the last non-empty frag. */ | |
1739 | fragp = seg_info (sec)->frchainP->frch_root; | |
1740 | last = seg_info (sec)->frchainP->frch_last; | |
1741 | while (fragp->fr_next != last) | |
cc8a6dd0 | 1742 | fragp = fragp->fr_next; |
7f788821 | 1743 | last->fr_address = size; |
bc8f3910 AM |
1744 | if ((new_size - size) % fragp->fr_var == 0) |
1745 | fragp->fr_offset += (new_size - size) / fragp->fr_var; | |
1746 | else | |
1747 | abort (); | |
252b5132 | 1748 | } |
bea9907b | 1749 | #endif |
252b5132 RH |
1750 | |
1751 | /* If the section size is non-zero, the section symbol needs an aux | |
1752 | entry associated with it, indicating the size. We don't know | |
1753 | all the values yet; coff_frob_symbol will fill them in later. */ | |
bea9907b | 1754 | #ifndef TICOFF |
252b5132 RH |
1755 | if (size != 0 |
1756 | || sec == text_section | |
1757 | || sec == data_section | |
1758 | || sec == bss_section) | |
bea9907b | 1759 | #endif |
252b5132 RH |
1760 | { |
1761 | symbolS *secsym = section_symbol (sec); | |
85645aed | 1762 | unsigned char sclass = C_STAT; |
252b5132 | 1763 | |
85645aed | 1764 | #ifdef OBJ_XCOFF |
fd361982 | 1765 | if (bfd_section_flags (sec) & SEC_DEBUGGING) |
85645aed TG |
1766 | sclass = C_DWARF; |
1767 | #endif | |
1768 | S_SET_STORAGE_CLASS (secsym, sclass); | |
252b5132 RH |
1769 | S_SET_NUMBER_AUXILIARY (secsym, 1); |
1770 | SF_SET_STATICS (secsym); | |
97834047 CC |
1771 | #ifdef OBJ_XCOFF |
1772 | SA_SET_SECT_SCNLEN (secsym, size); | |
1773 | #else | |
252b5132 | 1774 | SA_SET_SCN_SCNLEN (secsym, size); |
97834047 | 1775 | #endif |
252b5132 | 1776 | } |
a5324a3e | 1777 | /* FIXME: These should be in a "stabs.h" file, or maybe as.h. */ |
252b5132 RH |
1778 | #ifndef STAB_SECTION_NAME |
1779 | #define STAB_SECTION_NAME ".stab" | |
1780 | #endif | |
1781 | #ifndef STAB_STRING_SECTION_NAME | |
1782 | #define STAB_STRING_SECTION_NAME ".stabstr" | |
1783 | #endif | |
a5324a3e | 1784 | if (! streq (STAB_STRING_SECTION_NAME, sec->name)) |
252b5132 RH |
1785 | return; |
1786 | ||
1787 | strsec = sec; | |
1788 | sec = subseg_get (STAB_SECTION_NAME, 0); | |
1789 | /* size is already rounded up, since other section will be listed first */ | |
fd361982 | 1790 | size = bfd_section_size (strsec); |
252b5132 | 1791 | |
fd361982 | 1792 | n_entries = bfd_section_size (sec) / 12 - 1; |
252b5132 RH |
1793 | |
1794 | /* Find first non-empty frag. It should be large enough. */ | |
1795 | fragp = seg_info (sec)->frchainP->frch_root; | |
1796 | while (fragp && fragp->fr_fix == 0) | |
1797 | fragp = fragp->fr_next; | |
9c2799c2 | 1798 | gas_assert (fragp != 0 && fragp->fr_fix >= 12); |
252b5132 RH |
1799 | |
1800 | /* Store the values. */ | |
1801 | p = fragp->fr_literal; | |
1802 | bfd_h_put_16 (stdoutput, n_entries, (bfd_byte *) p + 6); | |
1803 | bfd_h_put_32 (stdoutput, size, (bfd_byte *) p + 8); | |
1804 | } | |
1805 | ||
1806 | void | |
3bab069c | 1807 | obj_coff_init_stab_section (segT stab ATTRIBUTE_UNUSED, segT stabstr) |
252b5132 | 1808 | { |
3b4dbbbf | 1809 | const char *file; |
252b5132 | 1810 | char *p; |
252b5132 RH |
1811 | unsigned int stroff; |
1812 | ||
dcd619be | 1813 | /* Make space for this first symbol. */ |
252b5132 | 1814 | p = frag_more (12); |
dcd619be | 1815 | /* Zero it out. */ |
252b5132 | 1816 | memset (p, 0, 12); |
3b4dbbbf | 1817 | file = as_where ((unsigned int *) NULL); |
3bab069c | 1818 | stroff = get_stab_string_offset (file, stabstr); |
252b5132 RH |
1819 | know (stroff == 1); |
1820 | md_number_to_chars (p, stroff, 4); | |
1821 | } | |
1822 | ||
1823 | #ifdef DEBUG | |
9ccb8af9 AM |
1824 | const char * s_get_name (symbolS *); |
1825 | ||
252b5132 | 1826 | const char * |
a5324a3e | 1827 | s_get_name (symbolS *s) |
252b5132 RH |
1828 | { |
1829 | return ((s == NULL) ? "(NULL)" : S_GET_NAME (s)); | |
1830 | } | |
1831 | ||
9ccb8af9 AM |
1832 | void symbol_dump (void); |
1833 | ||
252b5132 | 1834 | void |
a5324a3e | 1835 | symbol_dump (void) |
252b5132 RH |
1836 | { |
1837 | symbolS *symbolP; | |
1838 | ||
1839 | for (symbolP = symbol_rootP; symbolP; symbolP = symbol_next (symbolP)) | |
a5324a3e NC |
1840 | printf (_("0x%lx: \"%s\" type = %ld, class = %d, segment = %d\n"), |
1841 | (unsigned long) symbolP, | |
1842 | S_GET_NAME (symbolP), | |
1843 | (long) S_GET_DATA_TYPE (symbolP), | |
1844 | S_GET_STORAGE_CLASS (symbolP), | |
1845 | (int) S_GET_SEGMENT (symbolP)); | |
252b5132 RH |
1846 | } |
1847 | ||
1848 | #endif /* DEBUG */ | |
1849 | ||
7be1c489 | 1850 | const pseudo_typeS coff_pseudo_table[] = |
252b5132 | 1851 | { |
7be1c489 | 1852 | {"ABORT", s_abort, 0}, |
7be1c489 AM |
1853 | /* We accept the .bss directive for backward compatibility with |
1854 | earlier versions of gas. */ | |
1855 | {"bss", obj_coff_bss, 0}, | |
c1711530 DK |
1856 | #ifdef TE_PE |
1857 | /* PE provides an enhanced version of .comm with alignment. */ | |
1858 | {"comm", obj_coff_comm, 0}, | |
1859 | #endif /* TE_PE */ | |
7be1c489 AM |
1860 | {"def", obj_coff_def, 0}, |
1861 | {"dim", obj_coff_dim, 0}, | |
1862 | {"endef", obj_coff_endef, 0}, | |
1863 | {"ident", obj_coff_ident, 0}, | |
1864 | {"line", obj_coff_line, 0}, | |
1865 | {"ln", obj_coff_ln, 0}, | |
1866 | {"scl", obj_coff_scl, 0}, | |
1867 | {"sect", obj_coff_section, 0}, | |
1868 | {"sect.s", obj_coff_section, 0}, | |
1869 | {"section", obj_coff_section, 0}, | |
1870 | {"section.s", obj_coff_section, 0}, | |
1871 | /* FIXME: We ignore the MRI short attribute. */ | |
1872 | {"size", obj_coff_size, 0}, | |
1873 | {"tag", obj_coff_tag, 0}, | |
1874 | {"type", obj_coff_type, 0}, | |
1875 | {"val", obj_coff_val, 0}, | |
1876 | {"version", s_ignore, 0}, | |
1877 | {"loc", obj_coff_loc, 0}, | |
1878 | {"optim", s_ignore, 0}, /* For sun386i cc (?) */ | |
1879 | {"weak", obj_coff_weak, 0}, | |
1880 | #if defined TC_TIC4X | |
1881 | /* The tic4x uses sdef instead of def. */ | |
1882 | {"sdef", obj_coff_def, 0}, | |
f3d2b04b KT |
1883 | #endif |
1884 | #if defined(SEH_CMDS) | |
1885 | SEH_CMDS | |
252b5132 | 1886 | #endif |
7be1c489 AM |
1887 | {NULL, NULL, 0} |
1888 | }; | |
1889 | \f | |
252b5132 | 1890 | |
7be1c489 | 1891 | /* Support for a COFF emulation. */ |
252b5132 RH |
1892 | |
1893 | static void | |
7be1c489 | 1894 | coff_pop_insert (void) |
252b5132 | 1895 | { |
7be1c489 | 1896 | pop_insert (coff_pseudo_table); |
252b5132 RH |
1897 | } |
1898 | ||
a5324a3e | 1899 | static int |
7be1c489 | 1900 | coff_separate_stab_sections (void) |
a5324a3e | 1901 | { |
7be1c489 | 1902 | return 1; |
a5324a3e NC |
1903 | } |
1904 | ||
7be1c489 | 1905 | const struct format_ops coff_format_ops = |
252b5132 RH |
1906 | { |
1907 | bfd_target_coff_flavour, | |
4c63da97 AM |
1908 | 0, /* dfl_leading_underscore */ |
1909 | 1, /* emit_section_symbols */ | |
5110c57e | 1910 | 0, /* begin */ |
2ccd2276 | 1911 | 0, /* end. */ |
5110c57e | 1912 | c_dot_file_symbol, |
252b5132 | 1913 | coff_frob_symbol, |
4c63da97 | 1914 | 0, /* frob_file */ |
339681c0 | 1915 | 0, /* frob_file_before_adjust */ |
a161fe53 | 1916 | 0, /* frob_file_before_fix */ |
252b5132 | 1917 | coff_frob_file_after_relocs, |
4c63da97 AM |
1918 | 0, /* s_get_size */ |
1919 | 0, /* s_set_size */ | |
1920 | 0, /* s_get_align */ | |
1921 | 0, /* s_set_align */ | |
1922 | 0, /* s_get_other */ | |
5110c57e | 1923 | 0, /* s_set_other */ |
4c63da97 | 1924 | 0, /* s_get_desc */ |
5110c57e HPN |
1925 | 0, /* s_set_desc */ |
1926 | 0, /* s_get_type */ | |
1927 | 0, /* s_set_type */ | |
4c63da97 AM |
1928 | 0, /* copy_symbol_attributes */ |
1929 | 0, /* generate_asm_lineno */ | |
1930 | 0, /* process_stab */ | |
5110c57e HPN |
1931 | coff_separate_stab_sections, |
1932 | obj_coff_init_stab_section, | |
4c63da97 | 1933 | 0, /* sec_sym_ok_for_reloc */ |
252b5132 | 1934 | coff_pop_insert, |
4c63da97 | 1935 | 0, /* ecoff_set_ext */ |
252b5132 | 1936 | coff_obj_read_begin_hook, |
4cae74aa | 1937 | coff_obj_symbol_new_hook, |
645ea3ea | 1938 | coff_obj_symbol_clone_hook, |
6309d591 | 1939 | coff_adjust_symtab |
252b5132 | 1940 | }; |