Commit | Line | Data |
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252b5132 | 1 | /* coff object file format |
b3adc24a | 2 | Copyright (C) 1989-2020 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 NC |
35 | #define streq(a,b) (strcmp ((a), (b)) == 0) |
36 | #define strneq(a,b,n) (strncmp ((a), (b), (n)) == 0) | |
37 | ||
252b5132 RH |
38 | /* I think this is probably always correct. */ |
39 | #ifndef KEEP_RELOC_INFO | |
40 | #define KEEP_RELOC_INFO | |
41 | #endif | |
42 | ||
7be1c489 AM |
43 | /* obj_coff_section will use this macro to set a new section's |
44 | attributes when a directive has no valid flags or the "w" flag is | |
45 | used. This default should be appropriate for most. */ | |
b8a9dcab NC |
46 | #ifndef TC_COFF_SECTION_DEFAULT_ATTRIBUTES |
47 | #define TC_COFF_SECTION_DEFAULT_ATTRIBUTES (SEC_LOAD | SEC_DATA) | |
48 | #endif | |
49 | ||
8d28c9d7 AM |
50 | /* This is used to hold the symbol built by a sequence of pseudo-ops |
51 | from .def and .endef. */ | |
52 | static symbolS *def_symbol_in_progress; | |
977cdf5a NC |
53 | #ifdef TE_PE |
54 | /* PE weak alternate symbols begin with this string. */ | |
55 | static const char weak_altprefix[] = ".weak."; | |
56 | #endif /* TE_PE */ | |
8d28c9d7 | 57 | |
f3d2b04b KT |
58 | #include "obj-coff-seh.c" |
59 | ||
8d28c9d7 AM |
60 | typedef struct |
61 | { | |
62 | unsigned long chunk_size; | |
63 | unsigned long element_size; | |
64 | unsigned long size; | |
65 | char *data; | |
66 | unsigned long pointer; | |
67 | } | |
68 | stack; | |
69 | ||
252b5132 | 70 | \f |
a5324a3e | 71 | /* Stack stuff. */ |
252b5132 RH |
72 | |
73 | static stack * | |
a5324a3e NC |
74 | stack_init (unsigned long chunk_size, |
75 | unsigned long element_size) | |
252b5132 RH |
76 | { |
77 | stack *st; | |
78 | ||
add39d23 TS |
79 | st = XNEW (stack); |
80 | st->data = XNEWVEC (char, chunk_size); | |
252b5132 RH |
81 | if (!st->data) |
82 | { | |
83 | free (st); | |
a5324a3e | 84 | return NULL; |
252b5132 RH |
85 | } |
86 | st->pointer = 0; | |
87 | st->size = chunk_size; | |
88 | st->chunk_size = chunk_size; | |
89 | st->element_size = element_size; | |
90 | return st; | |
91 | } | |
92 | ||
252b5132 | 93 | static char * |
a5324a3e | 94 | stack_push (stack *st, char *element) |
252b5132 RH |
95 | { |
96 | if (st->pointer + st->element_size >= st->size) | |
97 | { | |
98 | st->size += st->chunk_size; | |
add39d23 | 99 | st->data = XRESIZEVEC (char, st->data, st->size); |
252b5132 RH |
100 | } |
101 | memcpy (st->data + st->pointer, element, st->element_size); | |
102 | st->pointer += st->element_size; | |
103 | return st->data + st->pointer; | |
104 | } | |
105 | ||
106 | static char * | |
a5324a3e | 107 | stack_pop (stack *st) |
252b5132 RH |
108 | { |
109 | if (st->pointer < st->element_size) | |
110 | { | |
111 | st->pointer = 0; | |
a5324a3e | 112 | return NULL; |
252b5132 RH |
113 | } |
114 | st->pointer -= st->element_size; | |
115 | return st->data + st->pointer; | |
116 | } | |
117 | \f | |
a5324a3e | 118 | /* Maintain a list of the tagnames of the structures. */ |
252b5132 | 119 | |
629310ab | 120 | static htab_t tag_hash; |
252b5132 RH |
121 | |
122 | static void | |
a5324a3e | 123 | tag_init (void) |
252b5132 | 124 | { |
629310ab | 125 | tag_hash = str_htab_create (); |
252b5132 RH |
126 | } |
127 | ||
128 | static void | |
a5324a3e | 129 | tag_insert (const char *name, symbolS *symbolP) |
252b5132 | 130 | { |
629310ab | 131 | str_hash_insert (tag_hash, name, (char *) symbolP); |
252b5132 RH |
132 | } |
133 | ||
134 | static symbolS * | |
a5324a3e | 135 | tag_find (char *name) |
252b5132 | 136 | { |
629310ab | 137 | return (symbolS *) str_hash_find (tag_hash, name); |
252b5132 RH |
138 | } |
139 | ||
140 | static symbolS * | |
a5324a3e | 141 | tag_find_or_make (char *name) |
252b5132 RH |
142 | { |
143 | symbolS *symbolP; | |
144 | ||
145 | if ((symbolP = tag_find (name)) == NULL) | |
146 | { | |
147 | symbolP = symbol_new (name, undefined_section, | |
148 | 0, &zero_address_frag); | |
149 | ||
150 | tag_insert (S_GET_NAME (symbolP), symbolP); | |
252b5132 | 151 | symbol_table_insert (symbolP); |
a5324a3e | 152 | } |
252b5132 RH |
153 | |
154 | return symbolP; | |
155 | } | |
156 | ||
157 | /* We accept the .bss directive to set the section for backward | |
158 | compatibility with earlier versions of gas. */ | |
159 | ||
160 | static void | |
a5324a3e | 161 | obj_coff_bss (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
162 | { |
163 | if (*input_line_pointer == '\n') | |
164 | subseg_new (".bss", get_absolute_expression ()); | |
165 | else | |
166 | s_lcomm (0); | |
167 | } | |
168 | ||
c1711530 DK |
169 | #ifdef TE_PE |
170 | /* Called from read.c:s_comm after we've parsed .comm symbol, size. | |
171 | Parse a possible alignment value. */ | |
172 | ||
173 | static symbolS * | |
174 | obj_coff_common_parse (int ignore ATTRIBUTE_UNUSED, symbolS *symbolP, addressT size) | |
175 | { | |
176 | addressT align = 0; | |
177 | ||
178 | if (*input_line_pointer == ',') | |
179 | { | |
180 | align = parse_align (0); | |
181 | if (align == (addressT) -1) | |
182 | return NULL; | |
183 | } | |
184 | ||
185 | S_SET_VALUE (symbolP, size); | |
186 | S_SET_EXTERNAL (symbolP); | |
187 | S_SET_SEGMENT (symbolP, bfd_com_section_ptr); | |
188 | ||
189 | symbol_get_bfdsym (symbolP)->flags |= BSF_OBJECT; | |
190 | ||
191 | /* There is no S_SET_ALIGN (symbolP, align) in COFF/PE. | |
192 | Instead we must add a note to the .drectve section. */ | |
193 | if (align) | |
194 | { | |
195 | segT current_seg = now_seg; | |
196 | subsegT current_subseg = now_subseg; | |
197 | flagword oldflags; | |
198 | asection *sec; | |
199 | size_t pfxlen, numlen; | |
200 | char *frag; | |
201 | char numbuff[20]; | |
202 | ||
203 | sec = subseg_new (".drectve", 0); | |
fd361982 | 204 | oldflags = bfd_section_flags (sec); |
c1711530 DK |
205 | if (oldflags == SEC_NO_FLAGS) |
206 | { | |
fd361982 | 207 | if (!bfd_set_section_flags (sec, TC_COFF_SECTION_DEFAULT_ATTRIBUTES)) |
c1711530 | 208 | as_warn (_("error setting flags for \"%s\": %s"), |
fd361982 | 209 | bfd_section_name (sec), |
c1711530 DK |
210 | bfd_errmsg (bfd_get_error ())); |
211 | } | |
212 | ||
213 | /* Emit a string. Note no NUL-termination. */ | |
a7879ef1 | 214 | pfxlen = strlen (" -aligncomm:") + 2 + strlen (S_GET_NAME (symbolP)) + 1; |
c1711530 DK |
215 | numlen = snprintf (numbuff, sizeof (numbuff), "%d", (int) align); |
216 | frag = frag_more (pfxlen + numlen); | |
a7879ef1 | 217 | (void) sprintf (frag, " -aligncomm:\"%s\",", S_GET_NAME (symbolP)); |
c1711530 DK |
218 | memcpy (frag + pfxlen, numbuff, numlen); |
219 | /* Restore original subseg. */ | |
220 | subseg_set (current_seg, current_subseg); | |
221 | } | |
222 | ||
223 | return symbolP; | |
224 | } | |
225 | ||
226 | static void | |
227 | obj_coff_comm (int ignore ATTRIBUTE_UNUSED) | |
228 | { | |
229 | s_comm_internal (ignore, obj_coff_common_parse); | |
230 | } | |
231 | #endif /* TE_PE */ | |
232 | ||
252b5132 RH |
233 | /* @@ Ick. */ |
234 | static segT | |
a5324a3e | 235 | fetch_coff_debug_section (void) |
252b5132 RH |
236 | { |
237 | static segT debug_section; | |
a5324a3e | 238 | |
252b5132 RH |
239 | if (!debug_section) |
240 | { | |
5a38dc70 | 241 | const asymbol *s; |
a5324a3e NC |
242 | |
243 | s = bfd_make_debug_symbol (stdoutput, NULL, 0); | |
9c2799c2 | 244 | gas_assert (s != 0); |
252b5132 RH |
245 | debug_section = s->section; |
246 | } | |
247 | return debug_section; | |
248 | } | |
249 | ||
250 | void | |
a5324a3e | 251 | SA_SET_SYM_ENDNDX (symbolS *sym, symbolS *val) |
252b5132 RH |
252 | { |
253 | combined_entry_type *entry, *p; | |
254 | ||
49309057 ILT |
255 | entry = &coffsymbol (symbol_get_bfdsym (sym))->native[1]; |
256 | p = coffsymbol (symbol_get_bfdsym (val))->native; | |
252b5132 RH |
257 | entry->u.auxent.x_sym.x_fcnary.x_fcn.x_endndx.p = p; |
258 | entry->fix_end = 1; | |
259 | } | |
260 | ||
261 | static void | |
a5324a3e | 262 | SA_SET_SYM_TAGNDX (symbolS *sym, symbolS *val) |
252b5132 RH |
263 | { |
264 | combined_entry_type *entry, *p; | |
265 | ||
49309057 ILT |
266 | entry = &coffsymbol (symbol_get_bfdsym (sym))->native[1]; |
267 | p = coffsymbol (symbol_get_bfdsym (val))->native; | |
252b5132 RH |
268 | entry->u.auxent.x_sym.x_tagndx.p = p; |
269 | entry->fix_tag = 1; | |
270 | } | |
271 | ||
272 | static int | |
a5324a3e | 273 | S_GET_DATA_TYPE (symbolS *sym) |
252b5132 | 274 | { |
49309057 | 275 | return coffsymbol (symbol_get_bfdsym (sym))->native->u.syment.n_type; |
252b5132 RH |
276 | } |
277 | ||
278 | int | |
a5324a3e | 279 | S_SET_DATA_TYPE (symbolS *sym, int val) |
252b5132 | 280 | { |
49309057 | 281 | coffsymbol (symbol_get_bfdsym (sym))->native->u.syment.n_type = val; |
252b5132 RH |
282 | return val; |
283 | } | |
284 | ||
285 | int | |
a5324a3e | 286 | S_GET_STORAGE_CLASS (symbolS *sym) |
252b5132 | 287 | { |
49309057 | 288 | return coffsymbol (symbol_get_bfdsym (sym))->native->u.syment.n_sclass; |
252b5132 RH |
289 | } |
290 | ||
291 | int | |
a5324a3e | 292 | S_SET_STORAGE_CLASS (symbolS *sym, int val) |
252b5132 | 293 | { |
49309057 | 294 | coffsymbol (symbol_get_bfdsym (sym))->native->u.syment.n_sclass = val; |
252b5132 RH |
295 | return val; |
296 | } | |
297 | ||
dcd619be | 298 | /* Merge a debug symbol containing debug information into a normal symbol. */ |
252b5132 | 299 | |
a5324a3e NC |
300 | static void |
301 | c_symbol_merge (symbolS *debug, symbolS *normal) | |
252b5132 RH |
302 | { |
303 | S_SET_DATA_TYPE (normal, S_GET_DATA_TYPE (debug)); | |
304 | S_SET_STORAGE_CLASS (normal, S_GET_STORAGE_CLASS (debug)); | |
305 | ||
306 | if (S_GET_NUMBER_AUXILIARY (debug) > S_GET_NUMBER_AUXILIARY (normal)) | |
a5324a3e NC |
307 | /* Take the most we have. */ |
308 | S_SET_NUMBER_AUXILIARY (normal, S_GET_NUMBER_AUXILIARY (debug)); | |
252b5132 RH |
309 | |
310 | if (S_GET_NUMBER_AUXILIARY (debug) > 0) | |
a5324a3e NC |
311 | /* Move all the auxiliary information. */ |
312 | memcpy (SYM_AUXINFO (normal), SYM_AUXINFO (debug), | |
313 | (S_GET_NUMBER_AUXILIARY (debug) | |
314 | * sizeof (*SYM_AUXINFO (debug)))); | |
252b5132 | 315 | |
dcd619be | 316 | /* Move the debug flags. */ |
252b5132 RH |
317 | SF_SET_DEBUG_FIELD (normal, SF_GET_DEBUG_FIELD (debug)); |
318 | } | |
319 | ||
320 | void | |
a4528eeb | 321 | c_dot_file_symbol (const char *filename, int appfile ATTRIBUTE_UNUSED) |
252b5132 RH |
322 | { |
323 | symbolS *symbolP; | |
324 | ||
0561a208 ILT |
325 | /* BFD converts filename to a .file symbol with an aux entry. It |
326 | also handles chaining. */ | |
252b5132 RH |
327 | symbolP = symbol_new (filename, bfd_abs_section_ptr, 0, &zero_address_frag); |
328 | ||
329 | S_SET_STORAGE_CLASS (symbolP, C_FILE); | |
330 | S_SET_NUMBER_AUXILIARY (symbolP, 1); | |
331 | ||
49309057 | 332 | symbol_get_bfdsym (symbolP)->flags = BSF_DEBUGGING; |
252b5132 RH |
333 | |
334 | #ifndef NO_LISTING | |
335 | { | |
336 | extern int listing; | |
a5324a3e | 337 | |
252b5132 | 338 | if (listing) |
a5324a3e | 339 | listing_source_file (filename); |
252b5132 RH |
340 | } |
341 | #endif | |
342 | ||
a5324a3e | 343 | /* Make sure that the symbol is first on the symbol chain. */ |
252b5132 RH |
344 | if (symbol_rootP != symbolP) |
345 | { | |
346 | symbol_remove (symbolP, &symbol_rootP, &symbol_lastP); | |
347 | symbol_insert (symbolP, symbol_rootP, &symbol_rootP, &symbol_lastP); | |
a5324a3e | 348 | } |
252b5132 RH |
349 | } |
350 | ||
a5324a3e | 351 | /* Line number handling. */ |
252b5132 | 352 | |
a5324a3e NC |
353 | struct line_no |
354 | { | |
252b5132 RH |
355 | struct line_no *next; |
356 | fragS *frag; | |
357 | alent l; | |
358 | }; | |
359 | ||
360 | int coff_line_base; | |
361 | ||
362 | /* Symbol of last function, which we should hang line#s off of. */ | |
363 | static symbolS *line_fsym; | |
364 | ||
365 | #define in_function() (line_fsym != 0) | |
366 | #define clear_function() (line_fsym = 0) | |
367 | #define set_function(F) (line_fsym = (F), coff_add_linesym (F)) | |
368 | ||
369 | \f | |
370 | void | |
a5324a3e | 371 | coff_obj_symbol_new_hook (symbolS *symbolP) |
252b5132 RH |
372 | { |
373 | long sz = (OBJ_COFF_MAX_AUXENTRIES + 1) * sizeof (combined_entry_type); | |
add39d23 | 374 | char * s = XNEWVEC (char, sz); |
dcd619be | 375 | |
252b5132 | 376 | memset (s, 0, sz); |
49309057 | 377 | coffsymbol (symbol_get_bfdsym (symbolP))->native = (combined_entry_type *) s; |
a5c71af8 | 378 | coffsymbol (symbol_get_bfdsym (symbolP))->native->is_sym = TRUE; |
252b5132 RH |
379 | |
380 | S_SET_DATA_TYPE (symbolP, T_NULL); | |
381 | S_SET_STORAGE_CLASS (symbolP, 0); | |
382 | S_SET_NUMBER_AUXILIARY (symbolP, 0); | |
383 | ||
384 | if (S_IS_STRING (symbolP)) | |
385 | SF_SET_STRING (symbolP); | |
dcd619be | 386 | |
252b5132 RH |
387 | if (S_IS_LOCAL (symbolP)) |
388 | SF_SET_LOCAL (symbolP); | |
389 | } | |
390 | ||
6a2b6326 JB |
391 | void |
392 | coff_obj_symbol_clone_hook (symbolS *newsymP, symbolS *orgsymP) | |
393 | { | |
add39d23 TS |
394 | long elts = OBJ_COFF_MAX_AUXENTRIES + 1; |
395 | combined_entry_type * s = XNEWVEC (combined_entry_type, elts); | |
6a2b6326 | 396 | |
add39d23 TS |
397 | memcpy (s, coffsymbol (symbol_get_bfdsym (orgsymP))->native, |
398 | elts * sizeof (combined_entry_type)); | |
6a2b6326 JB |
399 | coffsymbol (symbol_get_bfdsym (newsymP))->native = s; |
400 | ||
401 | SF_SET (newsymP, SF_GET (orgsymP)); | |
402 | } | |
403 | ||
252b5132 | 404 | \f |
a5324a3e | 405 | /* Handle .ln directives. */ |
252b5132 RH |
406 | |
407 | static symbolS *current_lineno_sym; | |
408 | static struct line_no *line_nos; | |
a5324a3e | 409 | /* FIXME: Blindly assume all .ln directives will be in the .text section. */ |
252b5132 RH |
410 | int coff_n_line_nos; |
411 | ||
412 | static void | |
a5324a3e | 413 | add_lineno (fragS * frag, addressT offset, int num) |
252b5132 | 414 | { |
add39d23 | 415 | struct line_no * new_line = XNEW (struct line_no); |
a5324a3e | 416 | |
252b5132 | 417 | if (!current_lineno_sym) |
a5324a3e | 418 | abort (); |
6877bb43 TR |
419 | |
420 | #ifndef OBJ_XCOFF | |
a5324a3e | 421 | /* The native aix assembler accepts negative line number. */ |
6877bb43 | 422 | |
dcd619be | 423 | if (num <= 0) |
e8a3ab75 ILT |
424 | { |
425 | /* Zero is used as an end marker in the file. */ | |
b985eaa8 ILT |
426 | as_warn (_("Line numbers must be positive integers\n")); |
427 | num = 1; | |
e8a3ab75 | 428 | } |
6877bb43 | 429 | #endif /* OBJ_XCOFF */ |
252b5132 RH |
430 | new_line->next = line_nos; |
431 | new_line->frag = frag; | |
432 | new_line->l.line_number = num; | |
433 | new_line->l.u.offset = offset; | |
434 | line_nos = new_line; | |
435 | coff_n_line_nos++; | |
436 | } | |
437 | ||
438 | void | |
a5324a3e | 439 | coff_add_linesym (symbolS *sym) |
252b5132 RH |
440 | { |
441 | if (line_nos) | |
442 | { | |
49309057 ILT |
443 | coffsymbol (symbol_get_bfdsym (current_lineno_sym))->lineno = |
444 | (alent *) line_nos; | |
252b5132 RH |
445 | coff_n_line_nos++; |
446 | line_nos = 0; | |
447 | } | |
448 | current_lineno_sym = sym; | |
449 | } | |
450 | ||
451 | static void | |
a5324a3e | 452 | obj_coff_ln (int appline) |
252b5132 RH |
453 | { |
454 | int l; | |
455 | ||
456 | if (! appline && def_symbol_in_progress != NULL) | |
457 | { | |
458 | as_warn (_(".ln pseudo-op inside .def/.endef: ignored.")); | |
459 | demand_empty_rest_of_line (); | |
460 | return; | |
461 | } | |
462 | ||
463 | l = get_absolute_expression (); | |
252b5132 | 464 | |
e237d851 NC |
465 | /* If there is no lineno symbol, treat a .ln |
466 | directive as if it were a .appline directive. */ | |
467 | if (appline || current_lineno_sym == NULL) | |
252b5132 | 468 | new_logical_line ((char *) NULL, l - 1); |
e237d851 NC |
469 | else |
470 | add_lineno (frag_now, frag_now_fix (), l); | |
252b5132 RH |
471 | |
472 | #ifndef NO_LISTING | |
473 | { | |
474 | extern int listing; | |
475 | ||
476 | if (listing) | |
477 | { | |
478 | if (! appline) | |
479 | l += coff_line_base - 1; | |
480 | listing_source_line (l); | |
481 | } | |
482 | } | |
483 | #endif | |
484 | ||
485 | demand_empty_rest_of_line (); | |
486 | } | |
487 | ||
28428223 ILT |
488 | /* .loc is essentially the same as .ln; parse it for assembler |
489 | compatibility. */ | |
490 | ||
491 | static void | |
a5324a3e | 492 | obj_coff_loc (int ignore ATTRIBUTE_UNUSED) |
28428223 ILT |
493 | { |
494 | int lineno; | |
495 | ||
496 | /* FIXME: Why do we need this check? We need it for ECOFF, but why | |
497 | do we need it for COFF? */ | |
498 | if (now_seg != text_section) | |
499 | { | |
500 | as_warn (_(".loc outside of .text")); | |
501 | demand_empty_rest_of_line (); | |
502 | return; | |
503 | } | |
504 | ||
505 | if (def_symbol_in_progress != NULL) | |
506 | { | |
507 | as_warn (_(".loc pseudo-op inside .def/.endef: ignored.")); | |
508 | demand_empty_rest_of_line (); | |
509 | return; | |
510 | } | |
511 | ||
512 | /* Skip the file number. */ | |
513 | SKIP_WHITESPACE (); | |
514 | get_absolute_expression (); | |
515 | SKIP_WHITESPACE (); | |
516 | ||
517 | lineno = get_absolute_expression (); | |
518 | ||
519 | #ifndef NO_LISTING | |
520 | { | |
521 | extern int listing; | |
522 | ||
523 | if (listing) | |
524 | { | |
cc8a6dd0 | 525 | lineno += coff_line_base - 1; |
28428223 ILT |
526 | listing_source_line (lineno); |
527 | } | |
528 | } | |
529 | #endif | |
530 | ||
531 | demand_empty_rest_of_line (); | |
532 | ||
533 | add_lineno (frag_now, frag_now_fix (), lineno); | |
534 | } | |
535 | ||
7a6284c4 ILT |
536 | /* Handle the .ident pseudo-op. */ |
537 | ||
538 | static void | |
a5324a3e | 539 | obj_coff_ident (int ignore ATTRIBUTE_UNUSED) |
7a6284c4 ILT |
540 | { |
541 | segT current_seg = now_seg; | |
542 | subsegT current_subseg = now_subseg; | |
543 | ||
544 | #ifdef TE_PE | |
545 | { | |
546 | segT sec; | |
547 | ||
548 | /* We could put it in .comment, but that creates an extra section | |
549 | that shouldn't be loaded into memory, which requires linker | |
550 | changes... For now, until proven otherwise, use .rdata. */ | |
551 | sec = subseg_new (".rdata$zzz", 0); | |
fd361982 | 552 | bfd_set_section_flags (sec, |
7a6284c4 ILT |
553 | ((SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_DATA) |
554 | & bfd_applicable_section_flags (stdoutput))); | |
555 | } | |
556 | #else | |
557 | subseg_new (".comment", 0); | |
558 | #endif | |
559 | ||
38a57ae7 | 560 | stringer (8 + 1); |
7a6284c4 ILT |
561 | subseg_set (current_seg, current_subseg); |
562 | } | |
563 | ||
a5324a3e NC |
564 | /* Handle .def directives. |
565 | ||
566 | One might ask : why can't we symbol_new if the symbol does not | |
567 | already exist and fill it with debug information. Because of | |
568 | the C_EFCN special symbol. It would clobber the value of the | |
569 | function symbol before we have a chance to notice that it is | |
570 | a C_EFCN. And a second reason is that the code is more clear this | |
571 | way. (at least I think it is :-). */ | |
252b5132 RH |
572 | |
573 | #define SKIP_SEMI_COLON() while (*input_line_pointer++ != ';') | |
574 | #define SKIP_WHITESPACES() while (*input_line_pointer == ' ' || \ | |
a5324a3e NC |
575 | *input_line_pointer == '\t') \ |
576 | input_line_pointer++; | |
252b5132 RH |
577 | |
578 | static void | |
a5324a3e | 579 | obj_coff_def (int what ATTRIBUTE_UNUSED) |
252b5132 | 580 | { |
a5324a3e NC |
581 | char name_end; /* Char after the end of name. */ |
582 | char *symbol_name; /* Name of the debug symbol. */ | |
583 | char *symbol_name_copy; /* Temporary copy of the name. */ | |
252b5132 RH |
584 | |
585 | if (def_symbol_in_progress != NULL) | |
586 | { | |
587 | as_warn (_(".def pseudo-op used inside of .def/.endef: ignored.")); | |
588 | demand_empty_rest_of_line (); | |
589 | return; | |
a5324a3e | 590 | } |
252b5132 RH |
591 | |
592 | SKIP_WHITESPACES (); | |
593 | ||
d02603dc | 594 | name_end = get_symbol_name (&symbol_name); |
29a2809e | 595 | symbol_name_copy = xstrdup (symbol_name); |
252b5132 RH |
596 | #ifdef tc_canonicalize_symbol_name |
597 | symbol_name_copy = tc_canonicalize_symbol_name (symbol_name_copy); | |
598 | #endif | |
599 | ||
a5324a3e | 600 | /* Initialize the new symbol. */ |
252b5132 | 601 | def_symbol_in_progress = symbol_make (symbol_name_copy); |
49309057 | 602 | symbol_set_frag (def_symbol_in_progress, &zero_address_frag); |
252b5132 RH |
603 | S_SET_VALUE (def_symbol_in_progress, 0); |
604 | ||
605 | if (S_IS_STRING (def_symbol_in_progress)) | |
606 | SF_SET_STRING (def_symbol_in_progress); | |
607 | ||
d02603dc | 608 | (void) restore_line_pointer (name_end); |
252b5132 RH |
609 | |
610 | demand_empty_rest_of_line (); | |
611 | } | |
612 | ||
252b5132 | 613 | static void |
a5324a3e | 614 | obj_coff_endef (int ignore ATTRIBUTE_UNUSED) |
252b5132 | 615 | { |
c9900432 | 616 | symbolS *symbolP = NULL; |
252b5132 | 617 | |
252b5132 RH |
618 | if (def_symbol_in_progress == NULL) |
619 | { | |
620 | as_warn (_(".endef pseudo-op used outside of .def/.endef: ignored.")); | |
621 | demand_empty_rest_of_line (); | |
622 | return; | |
a5324a3e | 623 | } |
252b5132 | 624 | |
dcd619be | 625 | /* Set the section number according to storage class. */ |
252b5132 RH |
626 | switch (S_GET_STORAGE_CLASS (def_symbol_in_progress)) |
627 | { | |
628 | case C_STRTAG: | |
629 | case C_ENTAG: | |
630 | case C_UNTAG: | |
631 | SF_SET_TAG (def_symbol_in_progress); | |
a5324a3e | 632 | /* Fall through. */ |
252b5132 RH |
633 | case C_FILE: |
634 | case C_TPDEF: | |
635 | SF_SET_DEBUG (def_symbol_in_progress); | |
636 | S_SET_SEGMENT (def_symbol_in_progress, fetch_coff_debug_section ()); | |
637 | break; | |
638 | ||
639 | case C_EFCN: | |
dcd619be | 640 | SF_SET_LOCAL (def_symbol_in_progress); /* Do not emit this symbol. */ |
a5324a3e | 641 | /* Fall through. */ |
252b5132 | 642 | case C_BLOCK: |
a5324a3e NC |
643 | SF_SET_PROCESS (def_symbol_in_progress); /* Will need processing before writing. */ |
644 | /* Fall through. */ | |
252b5132 RH |
645 | case C_FCN: |
646 | { | |
5a38dc70 | 647 | const char *name; |
a5324a3e | 648 | |
252b5132 RH |
649 | S_SET_SEGMENT (def_symbol_in_progress, text_section); |
650 | ||
49309057 | 651 | name = S_GET_NAME (def_symbol_in_progress); |
23dab925 | 652 | if (name[0] == '.' && name[2] == 'f' && name[3] == '\0') |
cc8a6dd0 | 653 | { |
23dab925 ILT |
654 | switch (name[1]) |
655 | { | |
dcd619be | 656 | case 'b': |
23dab925 ILT |
657 | /* .bf */ |
658 | if (! in_function ()) | |
659 | as_warn (_("`%s' symbol without preceding function"), name); | |
660 | /* Will need relocating. */ | |
661 | SF_SET_PROCESS (def_symbol_in_progress); | |
662 | clear_function (); | |
663 | break; | |
664 | #ifdef TE_PE | |
dcd619be | 665 | case 'e': |
23dab925 ILT |
666 | /* .ef */ |
667 | /* The MS compilers output the actual endline, not the | |
668 | function-relative one... we want to match without | |
669 | changing the assembler input. */ | |
dcd619be | 670 | SA_SET_SYM_LNNO (def_symbol_in_progress, |
23dab925 ILT |
671 | (SA_GET_SYM_LNNO (def_symbol_in_progress) |
672 | + coff_line_base)); | |
673 | break; | |
674 | #endif | |
675 | } | |
252b5132 RH |
676 | } |
677 | } | |
678 | break; | |
679 | ||
680 | #ifdef C_AUTOARG | |
681 | case C_AUTOARG: | |
682 | #endif /* C_AUTOARG */ | |
683 | case C_AUTO: | |
684 | case C_REG: | |
685 | case C_ARG: | |
686 | case C_REGPARM: | |
687 | case C_FIELD: | |
56385375 L |
688 | |
689 | /* According to the COFF documentation: | |
690 | ||
691 | http://osr5doc.sco.com:1996/topics/COFF_SectNumFld.html | |
692 | ||
693 | A special section number (-2) marks symbolic debugging symbols, | |
694 | including structure/union/enumeration tag names, typedefs, and | |
dcd619be | 695 | the name of the file. A section number of -1 indicates that the |
56385375 | 696 | symbol has a value but is not relocatable. Examples of |
dcd619be KH |
697 | absolute-valued symbols include automatic and register variables, |
698 | function arguments, and .eos symbols. | |
56385375 L |
699 | |
700 | But from Ian Lance Taylor: | |
701 | ||
702 | http://sources.redhat.com/ml/binutils/2000-08/msg00202.html | |
703 | ||
704 | the actual tools all marked them as section -1. So the GNU COFF | |
705 | assembler follows historical COFF assemblers. | |
706 | ||
707 | However, it causes problems for djgpp | |
708 | ||
709 | http://sources.redhat.com/ml/binutils/2000-08/msg00210.html | |
710 | ||
711 | By defining STRICTCOFF, a COFF port can make the assembler to | |
dcd619be | 712 | follow the documented behavior. */ |
56385375 | 713 | #ifdef STRICTCOFF |
252b5132 RH |
714 | case C_MOS: |
715 | case C_MOE: | |
716 | case C_MOU: | |
717 | case C_EOS: | |
56385375 | 718 | #endif |
d1d8ba22 | 719 | SF_SET_DEBUG (def_symbol_in_progress); |
252b5132 RH |
720 | S_SET_SEGMENT (def_symbol_in_progress, absolute_section); |
721 | break; | |
722 | ||
56385375 L |
723 | #ifndef STRICTCOFF |
724 | case C_MOS: | |
725 | case C_MOE: | |
726 | case C_MOU: | |
727 | case C_EOS: | |
728 | S_SET_SEGMENT (def_symbol_in_progress, absolute_section); | |
729 | break; | |
730 | #endif | |
731 | ||
252b5132 RH |
732 | case C_EXT: |
733 | case C_WEAKEXT: | |
734 | #ifdef TE_PE | |
735 | case C_NT_WEAK: | |
736 | #endif | |
737 | case C_STAT: | |
738 | case C_LABEL: | |
a5324a3e | 739 | /* Valid but set somewhere else (s_comm, s_lcomm, colon). */ |
252b5132 RH |
740 | break; |
741 | ||
742 | default: | |
743 | case C_USTATIC: | |
744 | case C_EXTDEF: | |
745 | case C_ULABEL: | |
746 | as_warn (_("unexpected storage class %d"), | |
747 | S_GET_STORAGE_CLASS (def_symbol_in_progress)); | |
748 | break; | |
a5324a3e | 749 | } |
252b5132 RH |
750 | |
751 | /* Now that we have built a debug symbol, try to find if we should | |
752 | merge with an existing symbol or not. If a symbol is C_EFCN or | |
9690c54d ILT |
753 | absolute_section or untagged SEG_DEBUG it never merges. We also |
754 | don't merge labels, which are in a different namespace, nor | |
755 | symbols which have not yet been defined since they are typically | |
756 | unique, nor do we merge tags with non-tags. */ | |
252b5132 RH |
757 | |
758 | /* Two cases for functions. Either debug followed by definition or | |
759 | definition followed by debug. For definition first, we will | |
760 | merge the debug symbol into the definition. For debug first, the | |
761 | lineno entry MUST point to the definition function or else it | |
762 | will point off into space when obj_crawl_symbol_chain() merges | |
763 | the debug symbol into the real symbol. Therefor, let's presume | |
dcd619be | 764 | the debug symbol is a real function reference. */ |
252b5132 RH |
765 | |
766 | /* FIXME-SOON If for some reason the definition label/symbol is | |
767 | never seen, this will probably leave an undefined symbol at link | |
dcd619be | 768 | time. */ |
252b5132 RH |
769 | |
770 | if (S_GET_STORAGE_CLASS (def_symbol_in_progress) == C_EFCN | |
9690c54d | 771 | || S_GET_STORAGE_CLASS (def_symbol_in_progress) == C_LABEL |
fd361982 | 772 | || (streq (bfd_section_name (S_GET_SEGMENT (def_symbol_in_progress)), |
a5324a3e | 773 | "*DEBUG*") |
252b5132 RH |
774 | && !SF_GET_TAG (def_symbol_in_progress)) |
775 | || S_GET_SEGMENT (def_symbol_in_progress) == absolute_section | |
9690c54d | 776 | || ! symbol_constant_p (def_symbol_in_progress) |
91c4c449 | 777 | || (symbolP = symbol_find (S_GET_NAME (def_symbol_in_progress))) == NULL |
9690c54d | 778 | || SF_GET_TAG (def_symbol_in_progress) != SF_GET_TAG (symbolP)) |
252b5132 | 779 | { |
9690c54d | 780 | /* If it already is at the end of the symbol list, do nothing */ |
252b5132 | 781 | if (def_symbol_in_progress != symbol_lastP) |
cc8a6dd0 | 782 | { |
9690c54d ILT |
783 | symbol_remove (def_symbol_in_progress, &symbol_rootP, &symbol_lastP); |
784 | symbol_append (def_symbol_in_progress, symbol_lastP, &symbol_rootP, | |
785 | &symbol_lastP); | |
cc8a6dd0 | 786 | } |
252b5132 RH |
787 | } |
788 | else | |
789 | { | |
790 | /* This symbol already exists, merge the newly created symbol | |
791 | into the old one. This is not mandatory. The linker can | |
792 | handle duplicate symbols correctly. But I guess that it save | |
793 | a *lot* of space if the assembly file defines a lot of | |
a5324a3e | 794 | symbols. [loic] */ |
252b5132 RH |
795 | |
796 | /* The debug entry (def_symbol_in_progress) is merged into the | |
dcd619be | 797 | previous definition. */ |
252b5132 RH |
798 | |
799 | c_symbol_merge (def_symbol_in_progress, symbolP); | |
800 | symbol_remove (def_symbol_in_progress, &symbol_rootP, &symbol_lastP); | |
801 | ||
802 | def_symbol_in_progress = symbolP; | |
803 | ||
804 | if (SF_GET_FUNCTION (def_symbol_in_progress) | |
805 | || SF_GET_TAG (def_symbol_in_progress) | |
806 | || S_GET_STORAGE_CLASS (def_symbol_in_progress) == C_STAT) | |
807 | { | |
808 | /* For functions, and tags, and static symbols, the symbol | |
809 | *must* be where the debug symbol appears. Move the | |
dcd619be | 810 | existing symbol to the current place. */ |
a5324a3e | 811 | /* If it already is at the end of the symbol list, do nothing. */ |
252b5132 RH |
812 | if (def_symbol_in_progress != symbol_lastP) |
813 | { | |
814 | symbol_remove (def_symbol_in_progress, &symbol_rootP, &symbol_lastP); | |
815 | symbol_append (def_symbol_in_progress, symbol_lastP, &symbol_rootP, &symbol_lastP); | |
816 | } | |
817 | } | |
818 | } | |
819 | ||
820 | if (SF_GET_TAG (def_symbol_in_progress)) | |
821 | { | |
822 | symbolS *oldtag; | |
823 | ||
91c4c449 | 824 | oldtag = symbol_find (S_GET_NAME (def_symbol_in_progress)); |
252b5132 RH |
825 | if (oldtag == NULL || ! SF_GET_TAG (oldtag)) |
826 | tag_insert (S_GET_NAME (def_symbol_in_progress), | |
827 | def_symbol_in_progress); | |
828 | } | |
829 | ||
830 | if (SF_GET_FUNCTION (def_symbol_in_progress)) | |
831 | { | |
252b5132 RH |
832 | set_function (def_symbol_in_progress); |
833 | SF_SET_PROCESS (def_symbol_in_progress); | |
834 | ||
835 | if (symbolP == NULL) | |
a5324a3e NC |
836 | /* That is, if this is the first time we've seen the |
837 | function. */ | |
838 | symbol_table_insert (def_symbol_in_progress); | |
839 | ||
840 | } | |
252b5132 RH |
841 | |
842 | def_symbol_in_progress = NULL; | |
843 | demand_empty_rest_of_line (); | |
844 | } | |
845 | ||
846 | static void | |
a5324a3e | 847 | obj_coff_dim (int ignore ATTRIBUTE_UNUSED) |
252b5132 | 848 | { |
91d6fa6a | 849 | int d_index; |
252b5132 RH |
850 | |
851 | if (def_symbol_in_progress == NULL) | |
852 | { | |
853 | as_warn (_(".dim pseudo-op used outside of .def/.endef: ignored.")); | |
854 | demand_empty_rest_of_line (); | |
855 | return; | |
a5324a3e | 856 | } |
252b5132 RH |
857 | |
858 | S_SET_NUMBER_AUXILIARY (def_symbol_in_progress, 1); | |
859 | ||
91d6fa6a | 860 | for (d_index = 0; d_index < DIMNUM; d_index++) |
252b5132 RH |
861 | { |
862 | SKIP_WHITESPACES (); | |
91d6fa6a | 863 | SA_SET_SYM_DIMEN (def_symbol_in_progress, d_index, |
252b5132 RH |
864 | get_absolute_expression ()); |
865 | ||
866 | switch (*input_line_pointer) | |
867 | { | |
868 | case ',': | |
869 | input_line_pointer++; | |
870 | break; | |
871 | ||
872 | default: | |
873 | as_warn (_("badly formed .dim directive ignored")); | |
a5324a3e | 874 | /* Fall through. */ |
252b5132 RH |
875 | case '\n': |
876 | case ';': | |
91d6fa6a | 877 | d_index = DIMNUM; |
252b5132 RH |
878 | break; |
879 | } | |
880 | } | |
881 | ||
882 | demand_empty_rest_of_line (); | |
883 | } | |
884 | ||
885 | static void | |
a5324a3e | 886 | obj_coff_line (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
887 | { |
888 | int this_base; | |
889 | ||
890 | if (def_symbol_in_progress == NULL) | |
891 | { | |
892 | /* Probably stabs-style line? */ | |
893 | obj_coff_ln (0); | |
894 | return; | |
895 | } | |
896 | ||
897 | this_base = get_absolute_expression (); | |
a5324a3e | 898 | if (streq (".bf", S_GET_NAME (def_symbol_in_progress))) |
252b5132 RH |
899 | coff_line_base = this_base; |
900 | ||
901 | S_SET_NUMBER_AUXILIARY (def_symbol_in_progress, 1); | |
23dab925 | 902 | SA_SET_SYM_LNNO (def_symbol_in_progress, this_base); |
252b5132 RH |
903 | |
904 | demand_empty_rest_of_line (); | |
905 | ||
906 | #ifndef NO_LISTING | |
a5324a3e | 907 | if (streq (".bf", S_GET_NAME (def_symbol_in_progress))) |
252b5132 RH |
908 | { |
909 | extern int listing; | |
910 | ||
911 | if (listing) | |
23dab925 | 912 | listing_source_line ((unsigned int) this_base); |
252b5132 RH |
913 | } |
914 | #endif | |
915 | } | |
916 | ||
917 | static void | |
a5324a3e | 918 | obj_coff_size (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
919 | { |
920 | if (def_symbol_in_progress == NULL) | |
921 | { | |
33eaf5de | 922 | as_warn (_(".size pseudo-op used outside of .def/.endef: ignored.")); |
252b5132 RH |
923 | demand_empty_rest_of_line (); |
924 | return; | |
a5324a3e | 925 | } |
252b5132 RH |
926 | |
927 | S_SET_NUMBER_AUXILIARY (def_symbol_in_progress, 1); | |
928 | SA_SET_SYM_SIZE (def_symbol_in_progress, get_absolute_expression ()); | |
929 | demand_empty_rest_of_line (); | |
930 | } | |
931 | ||
932 | static void | |
a5324a3e | 933 | obj_coff_scl (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
934 | { |
935 | if (def_symbol_in_progress == NULL) | |
936 | { | |
33eaf5de | 937 | as_warn (_(".scl pseudo-op used outside of .def/.endef: ignored.")); |
252b5132 RH |
938 | demand_empty_rest_of_line (); |
939 | return; | |
a5324a3e | 940 | } |
252b5132 RH |
941 | |
942 | S_SET_STORAGE_CLASS (def_symbol_in_progress, get_absolute_expression ()); | |
943 | demand_empty_rest_of_line (); | |
944 | } | |
945 | ||
946 | static void | |
a5324a3e | 947 | obj_coff_tag (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
948 | { |
949 | char *symbol_name; | |
950 | char name_end; | |
951 | ||
952 | if (def_symbol_in_progress == NULL) | |
953 | { | |
33eaf5de | 954 | as_warn (_(".tag pseudo-op used outside of .def/.endef: ignored.")); |
252b5132 RH |
955 | demand_empty_rest_of_line (); |
956 | return; | |
957 | } | |
958 | ||
959 | S_SET_NUMBER_AUXILIARY (def_symbol_in_progress, 1); | |
d02603dc | 960 | name_end = get_symbol_name (&symbol_name); |
252b5132 RH |
961 | |
962 | #ifdef tc_canonicalize_symbol_name | |
963 | symbol_name = tc_canonicalize_symbol_name (symbol_name); | |
964 | #endif | |
965 | ||
966 | /* Assume that the symbol referred to by .tag is always defined. | |
dcd619be | 967 | This was a bad assumption. I've added find_or_make. xoxorich. */ |
252b5132 RH |
968 | SA_SET_SYM_TAGNDX (def_symbol_in_progress, |
969 | tag_find_or_make (symbol_name)); | |
970 | if (SA_GET_SYM_TAGNDX (def_symbol_in_progress) == 0L) | |
a5324a3e | 971 | as_warn (_("tag not found for .tag %s"), symbol_name); |
252b5132 RH |
972 | |
973 | SF_SET_TAGGED (def_symbol_in_progress); | |
252b5132 | 974 | |
d02603dc | 975 | (void) restore_line_pointer (name_end); |
252b5132 RH |
976 | demand_empty_rest_of_line (); |
977 | } | |
978 | ||
979 | static void | |
a5324a3e | 980 | obj_coff_type (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
981 | { |
982 | if (def_symbol_in_progress == NULL) | |
983 | { | |
33eaf5de | 984 | as_warn (_(".type pseudo-op used outside of .def/.endef: ignored.")); |
252b5132 RH |
985 | demand_empty_rest_of_line (); |
986 | return; | |
a5324a3e | 987 | } |
252b5132 RH |
988 | |
989 | S_SET_DATA_TYPE (def_symbol_in_progress, get_absolute_expression ()); | |
990 | ||
991 | if (ISFCN (S_GET_DATA_TYPE (def_symbol_in_progress)) && | |
992 | S_GET_STORAGE_CLASS (def_symbol_in_progress) != C_TPDEF) | |
a5324a3e | 993 | SF_SET_FUNCTION (def_symbol_in_progress); |
252b5132 RH |
994 | |
995 | demand_empty_rest_of_line (); | |
996 | } | |
997 | ||
998 | static void | |
a5324a3e | 999 | obj_coff_val (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
1000 | { |
1001 | if (def_symbol_in_progress == NULL) | |
1002 | { | |
33eaf5de | 1003 | as_warn (_(".val pseudo-op used outside of .def/.endef: ignored.")); |
252b5132 RH |
1004 | demand_empty_rest_of_line (); |
1005 | return; | |
a5324a3e | 1006 | } |
252b5132 RH |
1007 | |
1008 | if (is_name_beginner (*input_line_pointer)) | |
1009 | { | |
d02603dc NC |
1010 | char *symbol_name; |
1011 | char name_end = get_symbol_name (&symbol_name); | |
252b5132 RH |
1012 | |
1013 | #ifdef tc_canonicalize_symbol_name | |
d02603dc | 1014 | symbol_name = tc_canonicalize_symbol_name (symbol_name); |
252b5132 | 1015 | #endif |
a5324a3e | 1016 | if (streq (symbol_name, ".")) |
252b5132 | 1017 | { |
a5324a3e | 1018 | /* If the .val is != from the .def (e.g. statics). */ |
49309057 | 1019 | symbol_set_frag (def_symbol_in_progress, frag_now); |
252b5132 | 1020 | S_SET_VALUE (def_symbol_in_progress, (valueT) frag_now_fix ()); |
252b5132 | 1021 | } |
a5324a3e | 1022 | else if (! streq (S_GET_NAME (def_symbol_in_progress), symbol_name)) |
252b5132 | 1023 | { |
49309057 ILT |
1024 | expressionS exp; |
1025 | ||
1026 | exp.X_op = O_symbol; | |
1027 | exp.X_add_symbol = symbol_find_or_make (symbol_name); | |
1028 | exp.X_op_symbol = NULL; | |
1029 | exp.X_add_number = 0; | |
1030 | symbol_set_value_expression (def_symbol_in_progress, &exp); | |
252b5132 RH |
1031 | |
1032 | /* If the segment is undefined when the forward reference is | |
1033 | resolved, then copy the segment id from the forward | |
1034 | symbol. */ | |
1035 | SF_SET_GET_SEGMENT (def_symbol_in_progress); | |
0561a208 ILT |
1036 | |
1037 | /* FIXME: gcc can generate address expressions here in | |
1038 | unusual cases (search for "obscure" in sdbout.c). We | |
1039 | just ignore the offset here, thus generating incorrect | |
1040 | debugging information. We ignore the rest of the line | |
1041 | just below. */ | |
252b5132 | 1042 | } |
0561a208 | 1043 | /* Otherwise, it is the name of a non debug symbol and its value |
dcd619be | 1044 | will be calculated later. */ |
d02603dc | 1045 | (void) restore_line_pointer (name_end); |
252b5132 RH |
1046 | } |
1047 | else | |
1048 | { | |
1049 | S_SET_VALUE (def_symbol_in_progress, get_absolute_expression ()); | |
a5324a3e | 1050 | } |
252b5132 RH |
1051 | |
1052 | demand_empty_rest_of_line (); | |
1053 | } | |
1054 | ||
977cdf5a NC |
1055 | #ifdef TE_PE |
1056 | ||
1057 | /* Return nonzero if name begins with weak alternate symbol prefix. */ | |
1058 | ||
1059 | static int | |
1060 | weak_is_altname (const char * name) | |
1061 | { | |
a5324a3e | 1062 | return strneq (name, weak_altprefix, sizeof (weak_altprefix) - 1); |
977cdf5a NC |
1063 | } |
1064 | ||
1065 | /* Return the name of the alternate symbol | |
1066 | name corresponding to a weak symbol's name. */ | |
1067 | ||
1068 | static const char * | |
1069 | weak_name2altname (const char * name) | |
1070 | { | |
29a2809e | 1071 | return concat (weak_altprefix, name, (char *) NULL); |
977cdf5a NC |
1072 | } |
1073 | ||
a5324a3e | 1074 | /* Return the name of the weak symbol corresponding to an |
708587a4 | 1075 | alternate symbol. */ |
977cdf5a NC |
1076 | |
1077 | static const char * | |
1078 | weak_altname2name (const char * name) | |
1079 | { | |
9c2799c2 | 1080 | gas_assert (weak_is_altname (name)); |
b851162a | 1081 | return xstrdup (name + 6); |
977cdf5a NC |
1082 | } |
1083 | ||
1084 | /* Make a weak symbol name unique by | |
1085 | appending the name of an external symbol. */ | |
1086 | ||
1087 | static const char * | |
1088 | weak_uniquify (const char * name) | |
1089 | { | |
977cdf5a NC |
1090 | const char * unique = ""; |
1091 | ||
22ba0981 | 1092 | #ifdef TE_PE |
977cdf5a NC |
1093 | if (an_external_name != NULL) |
1094 | unique = an_external_name; | |
1095 | #endif | |
9c2799c2 | 1096 | gas_assert (weak_is_altname (name)); |
977cdf5a | 1097 | |
29a2809e | 1098 | return concat (name, ".", unique, (char *) NULL); |
977cdf5a NC |
1099 | } |
1100 | ||
06e77878 AO |
1101 | void |
1102 | pecoff_obj_set_weak_hook (symbolS *symbolP) | |
1103 | { | |
1104 | symbolS *alternateP; | |
1105 | ||
1106 | /* See _Microsoft Portable Executable and Common Object | |
1107 | File Format Specification_, section 5.5.3. | |
1108 | Create a symbol representing the alternate value. | |
1109 | coff_frob_symbol will set the value of this symbol from | |
1110 | the value of the weak symbol itself. */ | |
1111 | S_SET_STORAGE_CLASS (symbolP, C_NT_WEAK); | |
1112 | S_SET_NUMBER_AUXILIARY (symbolP, 1); | |
1113 | SA_SET_SYM_FSIZE (symbolP, IMAGE_WEAK_EXTERN_SEARCH_NOLIBRARY); | |
1114 | ||
1115 | alternateP = symbol_find_or_make (weak_name2altname (S_GET_NAME (symbolP))); | |
1116 | S_SET_EXTERNAL (alternateP); | |
1117 | S_SET_STORAGE_CLASS (alternateP, C_NT_WEAK); | |
1118 | ||
1119 | SA_SET_SYM_TAGNDX (symbolP, alternateP); | |
1120 | } | |
1121 | ||
1122 | void | |
1123 | pecoff_obj_clear_weak_hook (symbolS *symbolP) | |
1124 | { | |
1125 | symbolS *alternateP; | |
1126 | ||
1127 | S_SET_STORAGE_CLASS (symbolP, 0); | |
1128 | SA_SET_SYM_FSIZE (symbolP, 0); | |
1129 | ||
1130 | alternateP = symbol_find (weak_name2altname (S_GET_NAME (symbolP))); | |
1131 | S_CLEAR_EXTERNAL (alternateP); | |
1132 | } | |
1133 | ||
977cdf5a NC |
1134 | #endif /* TE_PE */ |
1135 | ||
c87db184 | 1136 | /* Handle .weak. This is a GNU extension in formats other than PE. */ |
977cdf5a | 1137 | |
c87db184 | 1138 | static void |
977cdf5a | 1139 | obj_coff_weak (int ignore ATTRIBUTE_UNUSED) |
c87db184 CF |
1140 | { |
1141 | char *name; | |
1142 | int c; | |
1143 | symbolS *symbolP; | |
1144 | ||
1145 | do | |
1146 | { | |
d02603dc | 1147 | c = get_symbol_name (&name); |
c87db184 CF |
1148 | if (*name == 0) |
1149 | { | |
1150 | as_warn (_("badly formed .weak directive ignored")); | |
1151 | ignore_rest_of_line (); | |
1152 | return; | |
1153 | } | |
977cdf5a | 1154 | c = 0; |
c87db184 CF |
1155 | symbolP = symbol_find_or_make (name); |
1156 | *input_line_pointer = c; | |
d02603dc | 1157 | SKIP_WHITESPACE_AFTER_NAME (); |
c87db184 | 1158 | S_SET_WEAK (symbolP); |
c87db184 | 1159 | |
c87db184 CF |
1160 | if (c == ',') |
1161 | { | |
1162 | input_line_pointer++; | |
1163 | SKIP_WHITESPACE (); | |
1164 | if (*input_line_pointer == '\n') | |
1165 | c = '\n'; | |
1166 | } | |
1167 | ||
1168 | } | |
1169 | while (c == ','); | |
1170 | ||
1171 | demand_empty_rest_of_line (); | |
1172 | } | |
1173 | ||
252b5132 | 1174 | void |
a5324a3e | 1175 | coff_obj_read_begin_hook (void) |
252b5132 | 1176 | { |
dcd619be | 1177 | /* These had better be the same. Usually 18 bytes. */ |
252b5132 RH |
1178 | know (sizeof (SYMENT) == sizeof (AUXENT)); |
1179 | know (SYMESZ == AUXESZ); | |
252b5132 RH |
1180 | tag_init (); |
1181 | } | |
1182 | ||
252b5132 | 1183 | symbolS *coff_last_function; |
17fc154e | 1184 | #ifndef OBJ_XCOFF |
252b5132 | 1185 | static symbolS *coff_last_bf; |
17fc154e | 1186 | #endif |
252b5132 RH |
1187 | |
1188 | void | |
a5324a3e | 1189 | coff_frob_symbol (symbolS *symp, int *punt) |
252b5132 RH |
1190 | { |
1191 | static symbolS *last_tagP; | |
1192 | static stack *block_stack; | |
1193 | static symbolS *set_end; | |
1194 | symbolS *next_set_end = NULL; | |
1195 | ||
1196 | if (symp == &abs_symbol) | |
1197 | { | |
1198 | *punt = 1; | |
1199 | return; | |
1200 | } | |
1201 | ||
1202 | if (current_lineno_sym) | |
a5324a3e | 1203 | coff_add_linesym (NULL); |
252b5132 RH |
1204 | |
1205 | if (!block_stack) | |
1206 | block_stack = stack_init (512, sizeof (symbolS*)); | |
1207 | ||
252b5132 | 1208 | #ifdef TE_PE |
977cdf5a NC |
1209 | if (S_GET_STORAGE_CLASS (symp) == C_NT_WEAK |
1210 | && ! S_IS_WEAK (symp) | |
1211 | && weak_is_altname (S_GET_NAME (symp))) | |
1212 | { | |
1213 | /* This is a weak alternate symbol. All processing of | |
1214 | PECOFFweak symbols is done here, through the alternate. */ | |
06e77878 AO |
1215 | symbolS *weakp = symbol_find_noref (weak_altname2name |
1216 | (S_GET_NAME (symp)), 1); | |
977cdf5a | 1217 | |
9c2799c2 NC |
1218 | gas_assert (weakp); |
1219 | gas_assert (S_GET_NUMBER_AUXILIARY (weakp) == 1); | |
977cdf5a | 1220 | |
06e77878 AO |
1221 | if (! S_IS_WEAK (weakp)) |
1222 | { | |
1223 | /* The symbol was turned from weak to strong. Discard altname. */ | |
1224 | *punt = 1; | |
1225 | return; | |
1226 | } | |
1227 | else if (symbol_equated_p (weakp)) | |
977cdf5a NC |
1228 | { |
1229 | /* The weak symbol has an alternate specified; symp is unneeded. */ | |
1230 | S_SET_STORAGE_CLASS (weakp, C_NT_WEAK); | |
1231 | SA_SET_SYM_TAGNDX (weakp, | |
1232 | symbol_get_value_expression (weakp)->X_add_symbol); | |
1233 | ||
1234 | S_CLEAR_EXTERNAL (symp); | |
1235 | *punt = 1; | |
1236 | return; | |
1237 | } | |
1238 | else | |
1239 | { | |
1240 | /* The weak symbol has been assigned an alternate value. | |
1241 | Copy this value to symp, and set symp as weakp's alternate. */ | |
1242 | if (S_GET_STORAGE_CLASS (weakp) != C_NT_WEAK) | |
1243 | { | |
1244 | S_SET_STORAGE_CLASS (symp, S_GET_STORAGE_CLASS (weakp)); | |
1245 | S_SET_STORAGE_CLASS (weakp, C_NT_WEAK); | |
1246 | } | |
1247 | ||
1248 | if (S_IS_DEFINED (weakp)) | |
1249 | { | |
1250 | /* This is a defined weak symbol. Copy value information | |
1251 | from the weak symbol itself to the alternate symbol. */ | |
1252 | symbol_set_value_expression (symp, | |
1253 | symbol_get_value_expression (weakp)); | |
1254 | symbol_set_frag (symp, symbol_get_frag (weakp)); | |
1255 | S_SET_SEGMENT (symp, S_GET_SEGMENT (weakp)); | |
1256 | } | |
1257 | else | |
1258 | { | |
1259 | /* This is an undefined weak symbol. | |
1260 | Define the alternate symbol to zero. */ | |
1261 | S_SET_VALUE (symp, 0); | |
1262 | S_SET_SEGMENT (symp, absolute_section); | |
1263 | } | |
1264 | ||
1265 | S_SET_NAME (symp, weak_uniquify (S_GET_NAME (symp))); | |
1266 | S_SET_STORAGE_CLASS (symp, C_EXT); | |
1267 | ||
1268 | S_SET_VALUE (weakp, 0); | |
1269 | S_SET_SEGMENT (weakp, undefined_section); | |
1270 | } | |
252b5132 | 1271 | } |
977cdf5a NC |
1272 | #else /* TE_PE */ |
1273 | if (S_IS_WEAK (symp)) | |
1274 | S_SET_STORAGE_CLASS (symp, C_WEAKEXT); | |
1275 | #endif /* TE_PE */ | |
252b5132 RH |
1276 | |
1277 | if (!S_IS_DEFINED (symp) | |
1278 | && !S_IS_WEAK (symp) | |
1279 | && S_GET_STORAGE_CLASS (symp) != C_STAT) | |
1280 | S_SET_STORAGE_CLASS (symp, C_EXT); | |
1281 | ||
1282 | if (!SF_GET_DEBUG (symp)) | |
1283 | { | |
bdbe95c8 NC |
1284 | symbolS * real; |
1285 | ||
252b5132 RH |
1286 | if (!SF_GET_LOCAL (symp) |
1287 | && !SF_GET_STATICS (symp) | |
39da8128 | 1288 | && S_GET_STORAGE_CLASS (symp) != C_LABEL |
a5324a3e | 1289 | && symbol_constant_p (symp) |
06e77878 | 1290 | && (real = symbol_find_noref (S_GET_NAME (symp), 1)) |
bdbe95c8 | 1291 | && S_GET_STORAGE_CLASS (real) == C_NULL |
252b5132 RH |
1292 | && real != symp) |
1293 | { | |
1294 | c_symbol_merge (symp, real); | |
1295 | *punt = 1; | |
39da8128 | 1296 | return; |
252b5132 | 1297 | } |
bdbe95c8 | 1298 | |
5e0d736c | 1299 | if (!S_IS_DEFINED (symp) && !SF_GET_LOCAL (symp)) |
252b5132 | 1300 | { |
9c2799c2 | 1301 | gas_assert (S_GET_VALUE (symp) == 0); |
06e77878 AO |
1302 | if (S_IS_WEAKREFD (symp)) |
1303 | *punt = 1; | |
1304 | else | |
1305 | S_SET_EXTERNAL (symp); | |
5e0d736c DD |
1306 | } |
1307 | else if (S_GET_STORAGE_CLASS (symp) == C_NULL) | |
1308 | { | |
1309 | if (S_GET_SEGMENT (symp) == text_section | |
1310 | && symp != seg_info (text_section)->sym) | |
1311 | S_SET_STORAGE_CLASS (symp, C_LABEL); | |
252b5132 | 1312 | else |
5e0d736c | 1313 | S_SET_STORAGE_CLASS (symp, C_STAT); |
252b5132 | 1314 | } |
bdbe95c8 | 1315 | |
252b5132 RH |
1316 | if (SF_GET_PROCESS (symp)) |
1317 | { | |
1318 | if (S_GET_STORAGE_CLASS (symp) == C_BLOCK) | |
1319 | { | |
a5324a3e | 1320 | if (streq (S_GET_NAME (symp), ".bb")) |
252b5132 RH |
1321 | stack_push (block_stack, (char *) &symp); |
1322 | else | |
1323 | { | |
1324 | symbolS *begin; | |
bdbe95c8 | 1325 | |
252b5132 RH |
1326 | begin = *(symbolS **) stack_pop (block_stack); |
1327 | if (begin == 0) | |
1328 | as_warn (_("mismatched .eb")); | |
1329 | else | |
1330 | next_set_end = begin; | |
1331 | } | |
1332 | } | |
bdbe95c8 | 1333 | |
c207c2c6 KT |
1334 | if (coff_last_function == 0 && SF_GET_FUNCTION (symp) |
1335 | && S_IS_DEFINED (symp)) | |
252b5132 RH |
1336 | { |
1337 | union internal_auxent *auxp; | |
bdbe95c8 | 1338 | |
252b5132 RH |
1339 | coff_last_function = symp; |
1340 | if (S_GET_NUMBER_AUXILIARY (symp) < 1) | |
1341 | S_SET_NUMBER_AUXILIARY (symp, 1); | |
0561a208 | 1342 | auxp = SYM_AUXENT (symp); |
252b5132 RH |
1343 | memset (auxp->x_sym.x_fcnary.x_ary.x_dimen, 0, |
1344 | sizeof (auxp->x_sym.x_fcnary.x_ary.x_dimen)); | |
1345 | } | |
bdbe95c8 | 1346 | |
c207c2c6 KT |
1347 | if (S_GET_STORAGE_CLASS (symp) == C_EFCN |
1348 | && S_IS_DEFINED (symp)) | |
252b5132 RH |
1349 | { |
1350 | if (coff_last_function == 0) | |
161840f9 ILT |
1351 | as_fatal (_("C_EFCN symbol for %s out of scope"), |
1352 | S_GET_NAME (symp)); | |
252b5132 RH |
1353 | SA_SET_SYM_FSIZE (coff_last_function, |
1354 | (long) (S_GET_VALUE (symp) | |
1355 | - S_GET_VALUE (coff_last_function))); | |
1356 | next_set_end = coff_last_function; | |
1357 | coff_last_function = 0; | |
1358 | } | |
1359 | } | |
bdbe95c8 | 1360 | |
252b5132 RH |
1361 | if (S_IS_EXTERNAL (symp)) |
1362 | S_SET_STORAGE_CLASS (symp, C_EXT); | |
1363 | else if (SF_GET_LOCAL (symp)) | |
1364 | *punt = 1; | |
1365 | ||
1366 | if (SF_GET_FUNCTION (symp)) | |
49309057 | 1367 | symbol_get_bfdsym (symp)->flags |= BSF_FUNCTION; |
252b5132 RH |
1368 | } |
1369 | ||
8828d862 ILT |
1370 | /* Double check weak symbols. */ |
1371 | if (S_IS_WEAK (symp) && S_IS_COMMON (symp)) | |
1372 | as_bad (_("Symbol `%s' can not be both weak and common"), | |
1373 | S_GET_NAME (symp)); | |
1374 | ||
252b5132 RH |
1375 | if (SF_GET_TAG (symp)) |
1376 | last_tagP = symp; | |
1377 | else if (S_GET_STORAGE_CLASS (symp) == C_EOS) | |
1378 | next_set_end = last_tagP; | |
1379 | ||
1380 | #ifdef OBJ_XCOFF | |
1381 | /* This is pretty horrible, but we have to set *punt correctly in | |
1382 | order to call SA_SET_SYM_ENDNDX correctly. */ | |
809ffe0d | 1383 | if (! symbol_used_in_reloc_p (symp) |
49309057 | 1384 | && ((symbol_get_bfdsym (symp)->flags & BSF_SECTION_SYM) != 0 |
670ec21d | 1385 | || (! (S_IS_EXTERNAL (symp) || S_IS_WEAK (symp)) |
809ffe0d | 1386 | && ! symbol_get_tc (symp)->output |
252b5132 RH |
1387 | && S_GET_STORAGE_CLASS (symp) != C_FILE))) |
1388 | *punt = 1; | |
1389 | #endif | |
1390 | ||
1391 | if (set_end != (symbolS *) NULL | |
1392 | && ! *punt | |
49309057 | 1393 | && ((symbol_get_bfdsym (symp)->flags & BSF_NOT_AT_END) != 0 |
252b5132 RH |
1394 | || (S_IS_DEFINED (symp) |
1395 | && ! S_IS_COMMON (symp) | |
1396 | && (! S_IS_EXTERNAL (symp) || SF_GET_FUNCTION (symp))))) | |
1397 | { | |
1398 | SA_SET_SYM_ENDNDX (set_end, symp); | |
1399 | set_end = NULL; | |
1400 | } | |
1401 | ||
a04b544b ILT |
1402 | if (next_set_end != NULL) |
1403 | { | |
1404 | if (set_end != NULL) | |
20203fb9 | 1405 | as_warn (_("Warning: internal error: forgetting to set endndx of %s"), |
a04b544b ILT |
1406 | S_GET_NAME (set_end)); |
1407 | set_end = next_set_end; | |
1408 | } | |
252b5132 | 1409 | |
8642cce8 | 1410 | #ifndef OBJ_XCOFF |
252b5132 RH |
1411 | if (! *punt |
1412 | && S_GET_STORAGE_CLASS (symp) == C_FCN | |
a5324a3e | 1413 | && streq (S_GET_NAME (symp), ".bf")) |
252b5132 RH |
1414 | { |
1415 | if (coff_last_bf != NULL) | |
1416 | SA_SET_SYM_ENDNDX (coff_last_bf, symp); | |
1417 | coff_last_bf = symp; | |
1418 | } | |
8642cce8 | 1419 | #endif |
49309057 | 1420 | if (coffsymbol (symbol_get_bfdsym (symp))->lineno) |
252b5132 RH |
1421 | { |
1422 | int i; | |
1423 | struct line_no *lptr; | |
1424 | alent *l; | |
1425 | ||
49309057 | 1426 | lptr = (struct line_no *) coffsymbol (symbol_get_bfdsym (symp))->lineno; |
252b5132 RH |
1427 | for (i = 0; lptr; lptr = lptr->next) |
1428 | i++; | |
49309057 | 1429 | lptr = (struct line_no *) coffsymbol (symbol_get_bfdsym (symp))->lineno; |
252b5132 RH |
1430 | |
1431 | /* We need i entries for line numbers, plus 1 for the first | |
1432 | entry which BFD will override, plus 1 for the last zero | |
1433 | entry (a marker for BFD). */ | |
add39d23 | 1434 | l = XNEWVEC (alent, (i + 2)); |
49309057 | 1435 | coffsymbol (symbol_get_bfdsym (symp))->lineno = l; |
252b5132 RH |
1436 | l[i + 1].line_number = 0; |
1437 | l[i + 1].u.sym = NULL; | |
1438 | for (; i > 0; i--) | |
1439 | { | |
1440 | if (lptr->frag) | |
bea9907b | 1441 | lptr->l.u.offset += lptr->frag->fr_address / OCTETS_PER_BYTE; |
252b5132 RH |
1442 | l[i] = lptr->l; |
1443 | lptr = lptr->next; | |
1444 | } | |
1445 | } | |
1446 | } | |
1447 | ||
1448 | void | |
a5324a3e NC |
1449 | coff_adjust_section_syms (bfd *abfd ATTRIBUTE_UNUSED, |
1450 | asection *sec, | |
1451 | void * x ATTRIBUTE_UNUSED) | |
252b5132 RH |
1452 | { |
1453 | symbolS *secsym; | |
1454 | segment_info_type *seginfo = seg_info (sec); | |
1455 | int nlnno, nrelocs = 0; | |
1456 | ||
1457 | /* RS/6000 gas creates a .debug section manually in ppc_frob_file in | |
1458 | tc-ppc.c. Do not get confused by it. */ | |
1459 | if (seginfo == NULL) | |
1460 | return; | |
1461 | ||
a5324a3e | 1462 | if (streq (sec->name, ".text")) |
252b5132 RH |
1463 | nlnno = coff_n_line_nos; |
1464 | else | |
1465 | nlnno = 0; | |
1466 | { | |
1467 | /* @@ Hope that none of the fixups expand to more than one reloc | |
1468 | entry... */ | |
1469 | fixS *fixp = seginfo->fix_root; | |
1470 | while (fixp) | |
1471 | { | |
1472 | if (! fixp->fx_done) | |
1473 | nrelocs++; | |
1474 | fixp = fixp->fx_next; | |
1475 | } | |
1476 | } | |
fd361982 | 1477 | if (bfd_section_size (sec) == 0 |
252b5132 RH |
1478 | && nrelocs == 0 |
1479 | && nlnno == 0 | |
1480 | && sec != text_section | |
1481 | && sec != data_section | |
1482 | && sec != bss_section) | |
1483 | return; | |
a5324a3e | 1484 | |
252b5132 | 1485 | secsym = section_symbol (sec); |
945a1a6b ILT |
1486 | /* This is an estimate; we'll plug in the real value using |
1487 | SET_SECTION_RELOCS later */ | |
252b5132 RH |
1488 | SA_SET_SCN_NRELOC (secsym, nrelocs); |
1489 | SA_SET_SCN_NLINNO (secsym, nlnno); | |
1490 | } | |
1491 | ||
1492 | void | |
a5324a3e | 1493 | coff_frob_file_after_relocs (void) |
252b5132 | 1494 | { |
a5324a3e | 1495 | bfd_map_over_sections (stdoutput, coff_adjust_section_syms, NULL); |
252b5132 RH |
1496 | } |
1497 | ||
6ff96af6 NC |
1498 | /* Implement the .section pseudo op: |
1499 | .section name {, "flags"} | |
1500 | ^ ^ | |
1501 | | +--- optional flags: 'b' for bss | |
1502 | | 'i' for info | |
1503 | +-- section name 'l' for lib | |
1504 | 'n' for noload | |
1505 | 'o' for over | |
1506 | 'w' for data | |
1507 | 'd' (apparently m88k for data) | |
c3489828 | 1508 | 'e' for exclude |
6ff96af6 NC |
1509 | 'x' for text |
1510 | 'r' for read-only data | |
1511 | 's' for shared data (PE) | |
63ad59ae | 1512 | 'y' for noread |
31907d5e | 1513 | '0' - '9' for power-of-two alignment (GNU extension). |
6ff96af6 NC |
1514 | But if the argument is not a quoted string, treat it as a |
1515 | subsegment number. | |
1516 | ||
1517 | Note the 'a' flag is silently ignored. This allows the same | |
1518 | .section directive to be parsed in both ELF and COFF formats. */ | |
252b5132 RH |
1519 | |
1520 | void | |
a5324a3e | 1521 | obj_coff_section (int ignore ATTRIBUTE_UNUSED) |
252b5132 | 1522 | { |
a5324a3e | 1523 | /* Strip out the section name. */ |
252b5132 RH |
1524 | char *section_name; |
1525 | char c; | |
31907d5e | 1526 | int alignment = -1; |
252b5132 RH |
1527 | char *name; |
1528 | unsigned int exp; | |
c9900432 | 1529 | flagword flags, oldflags; |
252b5132 | 1530 | asection *sec; |
b7780957 | 1531 | bfd_boolean is_bss = FALSE; |
252b5132 RH |
1532 | |
1533 | if (flag_mri) | |
1534 | { | |
1535 | char type; | |
1536 | ||
1537 | s_mri_sect (&type); | |
1538 | return; | |
1539 | } | |
1540 | ||
d02603dc | 1541 | c = get_symbol_name (§ion_name); |
29a2809e | 1542 | name = xmemdup0 (section_name, input_line_pointer - section_name); |
252b5132 | 1543 | *input_line_pointer = c; |
d02603dc | 1544 | SKIP_WHITESPACE_AFTER_NAME (); |
252b5132 RH |
1545 | |
1546 | exp = 0; | |
c9900432 | 1547 | flags = SEC_NO_FLAGS; |
252b5132 RH |
1548 | |
1549 | if (*input_line_pointer == ',') | |
1550 | { | |
1551 | ++input_line_pointer; | |
1552 | SKIP_WHITESPACE (); | |
1553 | if (*input_line_pointer != '"') | |
1554 | exp = get_absolute_expression (); | |
1555 | else | |
1556 | { | |
422fee64 NC |
1557 | unsigned char attr; |
1558 | int readonly_removed = 0; | |
1559 | int load_removed = 0; | |
1560 | ||
1561 | while (attr = *++input_line_pointer, | |
1562 | attr != '"' | |
1563 | && ! is_end_of_line[attr]) | |
252b5132 | 1564 | { |
31907d5e DK |
1565 | if (ISDIGIT (attr)) |
1566 | { | |
1567 | alignment = attr - '0'; | |
1568 | continue; | |
1569 | } | |
422fee64 | 1570 | switch (attr) |
252b5132 | 1571 | { |
c3489828 KT |
1572 | case 'e': |
1573 | /* Exclude section from linking. */ | |
1574 | flags |= SEC_EXCLUDE; | |
1575 | break; | |
1576 | ||
422fee64 NC |
1577 | case 'b': |
1578 | /* Uninitialised data section. */ | |
1579 | flags |= SEC_ALLOC; | |
1580 | flags &=~ SEC_LOAD; | |
b7780957 | 1581 | is_bss = TRUE; |
422fee64 NC |
1582 | break; |
1583 | ||
1584 | case 'n': | |
1585 | /* Section not loaded. */ | |
1586 | flags &=~ SEC_LOAD; | |
1587 | flags |= SEC_NEVER_LOAD; | |
1588 | load_removed = 1; | |
1589 | break; | |
1590 | ||
1591 | case 's': | |
1592 | /* Shared section. */ | |
1593 | flags |= SEC_COFF_SHARED; | |
1594 | /* Fall through. */ | |
1595 | case 'd': | |
1596 | /* Data section. */ | |
1597 | flags |= SEC_DATA; | |
1598 | if (! load_removed) | |
1599 | flags |= SEC_LOAD; | |
1600 | flags &=~ SEC_READONLY; | |
1601 | break; | |
e96c5464 | 1602 | |
422fee64 NC |
1603 | case 'w': |
1604 | /* Writable section. */ | |
1605 | flags &=~ SEC_READONLY; | |
1606 | readonly_removed = 1; | |
1607 | break; | |
e96c5464 | 1608 | |
422fee64 NC |
1609 | case 'a': |
1610 | /* Ignore. Here for compatibility with ELF. */ | |
1611 | break; | |
1612 | ||
1613 | case 'r': /* Read-only section. Implies a data section. */ | |
1614 | readonly_removed = 0; | |
1615 | /* Fall through. */ | |
1616 | case 'x': /* Executable section. */ | |
1617 | /* If we are setting the 'x' attribute or if the 'r' | |
1618 | attribute is being used to restore the readonly status | |
1619 | of a code section (eg "wxr") then set the SEC_CODE flag, | |
1620 | otherwise set the SEC_DATA flag. */ | |
1621 | flags |= (attr == 'x' || (flags & SEC_CODE) ? SEC_CODE : SEC_DATA); | |
1622 | if (! load_removed) | |
1623 | flags |= SEC_LOAD; | |
1624 | /* Note - the READONLY flag is set here, even for the 'x' | |
708587a4 | 1625 | attribute in order to be compatible with the MSVC |
422fee64 NC |
1626 | linker. */ |
1627 | if (! readonly_removed) | |
1628 | flags |= SEC_READONLY; | |
1629 | break; | |
252b5132 | 1630 | |
63ad59ae KT |
1631 | case 'y': |
1632 | flags |= SEC_COFF_NOREAD | SEC_READONLY; | |
1633 | break; | |
1634 | ||
252b5132 RH |
1635 | case 'i': /* STYP_INFO */ |
1636 | case 'l': /* STYP_LIB */ | |
1637 | case 'o': /* STYP_OVER */ | |
422fee64 | 1638 | as_warn (_("unsupported section attribute '%c'"), attr); |
252b5132 RH |
1639 | break; |
1640 | ||
1641 | default: | |
422fee64 | 1642 | as_warn (_("unknown section attribute '%c'"), attr); |
252b5132 RH |
1643 | break; |
1644 | } | |
252b5132 | 1645 | } |
422fee64 | 1646 | if (attr == '"') |
252b5132 RH |
1647 | ++input_line_pointer; |
1648 | } | |
1649 | } | |
1650 | ||
1651 | sec = subseg_new (name, (subsegT) exp); | |
c207c2c6 | 1652 | |
b7780957 J |
1653 | if (is_bss) |
1654 | seg_info (sec)->bss = 1; | |
1655 | ||
31907d5e DK |
1656 | if (alignment >= 0) |
1657 | sec->alignment_power = alignment; | |
252b5132 | 1658 | |
fd361982 | 1659 | oldflags = bfd_section_flags (sec); |
c9900432 | 1660 | if (oldflags == SEC_NO_FLAGS) |
252b5132 | 1661 | { |
c9900432 NC |
1662 | /* Set section flags for a new section just created by subseg_new. |
1663 | Provide a default if no flags were parsed. */ | |
1664 | if (flags == SEC_NO_FLAGS) | |
1ad5eac0 | 1665 | flags = TC_COFF_SECTION_DEFAULT_ATTRIBUTES; |
dcd619be | 1666 | |
c9900432 NC |
1667 | #ifdef COFF_LONG_SECTION_NAMES |
1668 | /* Add SEC_LINK_ONCE and SEC_LINK_DUPLICATES_DISCARD to .gnu.linkonce | |
1669 | sections so adjust_reloc_syms in write.c will correctly handle | |
1670 | relocs which refer to non-local symbols in these sections. */ | |
a5324a3e | 1671 | if (strneq (name, ".gnu.linkonce", sizeof (".gnu.linkonce") - 1)) |
cc8a6dd0 | 1672 | flags |= SEC_LINK_ONCE | SEC_LINK_DUPLICATES_DISCARD; |
c9900432 | 1673 | #endif |
252b5132 | 1674 | |
fd361982 | 1675 | if (!bfd_set_section_flags (sec, flags)) |
cc8a6dd0 | 1676 | as_warn (_("error setting flags for \"%s\": %s"), |
fd361982 | 1677 | bfd_section_name (sec), |
cc8a6dd0 | 1678 | bfd_errmsg (bfd_get_error ())); |
c9900432 NC |
1679 | } |
1680 | else if (flags != SEC_NO_FLAGS) | |
1681 | { | |
a5324a3e | 1682 | /* This section's attributes have already been set. Warn if the |
c9900432 | 1683 | attributes don't match. */ |
5dd0794d | 1684 | flagword matchflags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_CODE |
63ad59ae KT |
1685 | | SEC_DATA | SEC_COFF_SHARED | SEC_NEVER_LOAD |
1686 | | SEC_COFF_NOREAD); | |
c9900432 NC |
1687 | if ((flags ^ oldflags) & matchflags) |
1688 | as_warn (_("Ignoring changed section attributes for %s"), name); | |
252b5132 RH |
1689 | } |
1690 | ||
1691 | demand_empty_rest_of_line (); | |
1692 | } | |
1693 | ||
1694 | void | |
a5324a3e | 1695 | coff_adjust_symtab (void) |
252b5132 RH |
1696 | { |
1697 | if (symbol_rootP == NULL | |
1698 | || S_GET_STORAGE_CLASS (symbol_rootP) != C_FILE) | |
a4528eeb | 1699 | c_dot_file_symbol ("fake", 0); |
252b5132 RH |
1700 | } |
1701 | ||
1702 | void | |
a5324a3e | 1703 | coff_frob_section (segT sec) |
252b5132 RH |
1704 | { |
1705 | segT strsec; | |
1706 | char *p; | |
1707 | fragS *fragp; | |
87975d2a | 1708 | bfd_vma n_entries; |
252b5132 RH |
1709 | |
1710 | /* The COFF back end in BFD requires that all section sizes be | |
bea9907b TW |
1711 | rounded up to multiples of the corresponding section alignments, |
1712 | supposedly because standard COFF has no other way of encoding alignment | |
1713 | for sections. If your COFF flavor has a different way of encoding | |
dcd619be | 1714 | section alignment, then skip this step, as TICOFF does. */ |
fd361982 | 1715 | bfd_vma size = bfd_section_size (sec); |
bea9907b | 1716 | #if !defined(TICOFF) |
87975d2a AM |
1717 | bfd_vma align_power = (bfd_vma) sec->alignment_power + OCTETS_PER_BYTE_POWER; |
1718 | bfd_vma mask = ((bfd_vma) 1 << align_power) - 1; | |
1719 | ||
252b5132 RH |
1720 | if (size & mask) |
1721 | { | |
7f788821 NC |
1722 | bfd_vma new_size; |
1723 | fragS *last; | |
dcd619be | 1724 | |
7f788821 | 1725 | new_size = (size + mask) & ~mask; |
fd361982 | 1726 | bfd_set_section_size (sec, new_size); |
7f788821 NC |
1727 | |
1728 | /* If the size had to be rounded up, add some padding in | |
1729 | the last non-empty frag. */ | |
1730 | fragp = seg_info (sec)->frchainP->frch_root; | |
1731 | last = seg_info (sec)->frchainP->frch_last; | |
1732 | while (fragp->fr_next != last) | |
cc8a6dd0 | 1733 | fragp = fragp->fr_next; |
7f788821 NC |
1734 | last->fr_address = size; |
1735 | fragp->fr_offset += new_size - size; | |
252b5132 | 1736 | } |
bea9907b | 1737 | #endif |
252b5132 RH |
1738 | |
1739 | /* If the section size is non-zero, the section symbol needs an aux | |
1740 | entry associated with it, indicating the size. We don't know | |
1741 | all the values yet; coff_frob_symbol will fill them in later. */ | |
bea9907b | 1742 | #ifndef TICOFF |
252b5132 RH |
1743 | if (size != 0 |
1744 | || sec == text_section | |
1745 | || sec == data_section | |
1746 | || sec == bss_section) | |
bea9907b | 1747 | #endif |
252b5132 RH |
1748 | { |
1749 | symbolS *secsym = section_symbol (sec); | |
85645aed | 1750 | unsigned char sclass = C_STAT; |
252b5132 | 1751 | |
85645aed | 1752 | #ifdef OBJ_XCOFF |
fd361982 | 1753 | if (bfd_section_flags (sec) & SEC_DEBUGGING) |
85645aed TG |
1754 | sclass = C_DWARF; |
1755 | #endif | |
1756 | S_SET_STORAGE_CLASS (secsym, sclass); | |
252b5132 RH |
1757 | S_SET_NUMBER_AUXILIARY (secsym, 1); |
1758 | SF_SET_STATICS (secsym); | |
1759 | SA_SET_SCN_SCNLEN (secsym, size); | |
1760 | } | |
a5324a3e | 1761 | /* FIXME: These should be in a "stabs.h" file, or maybe as.h. */ |
252b5132 RH |
1762 | #ifndef STAB_SECTION_NAME |
1763 | #define STAB_SECTION_NAME ".stab" | |
1764 | #endif | |
1765 | #ifndef STAB_STRING_SECTION_NAME | |
1766 | #define STAB_STRING_SECTION_NAME ".stabstr" | |
1767 | #endif | |
a5324a3e | 1768 | if (! streq (STAB_STRING_SECTION_NAME, sec->name)) |
252b5132 RH |
1769 | return; |
1770 | ||
1771 | strsec = sec; | |
1772 | sec = subseg_get (STAB_SECTION_NAME, 0); | |
1773 | /* size is already rounded up, since other section will be listed first */ | |
fd361982 | 1774 | size = bfd_section_size (strsec); |
252b5132 | 1775 | |
fd361982 | 1776 | n_entries = bfd_section_size (sec) / 12 - 1; |
252b5132 RH |
1777 | |
1778 | /* Find first non-empty frag. It should be large enough. */ | |
1779 | fragp = seg_info (sec)->frchainP->frch_root; | |
1780 | while (fragp && fragp->fr_fix == 0) | |
1781 | fragp = fragp->fr_next; | |
9c2799c2 | 1782 | gas_assert (fragp != 0 && fragp->fr_fix >= 12); |
252b5132 RH |
1783 | |
1784 | /* Store the values. */ | |
1785 | p = fragp->fr_literal; | |
1786 | bfd_h_put_16 (stdoutput, n_entries, (bfd_byte *) p + 6); | |
1787 | bfd_h_put_32 (stdoutput, size, (bfd_byte *) p + 8); | |
1788 | } | |
1789 | ||
1790 | void | |
a5324a3e | 1791 | obj_coff_init_stab_section (segT seg) |
252b5132 | 1792 | { |
3b4dbbbf | 1793 | const char *file; |
252b5132 RH |
1794 | char *p; |
1795 | char *stabstr_name; | |
1796 | unsigned int stroff; | |
1797 | ||
dcd619be | 1798 | /* Make space for this first symbol. */ |
252b5132 | 1799 | p = frag_more (12); |
dcd619be | 1800 | /* Zero it out. */ |
252b5132 | 1801 | memset (p, 0, 12); |
3b4dbbbf | 1802 | file = as_where ((unsigned int *) NULL); |
29a2809e | 1803 | stabstr_name = concat (seg->name, "str", (char *) NULL); |
0acc7632 | 1804 | stroff = get_stab_string_offset (file, stabstr_name, TRUE); |
252b5132 RH |
1805 | know (stroff == 1); |
1806 | md_number_to_chars (p, stroff, 4); | |
1807 | } | |
1808 | ||
1809 | #ifdef DEBUG | |
9ccb8af9 AM |
1810 | const char * s_get_name (symbolS *); |
1811 | ||
252b5132 | 1812 | const char * |
a5324a3e | 1813 | s_get_name (symbolS *s) |
252b5132 RH |
1814 | { |
1815 | return ((s == NULL) ? "(NULL)" : S_GET_NAME (s)); | |
1816 | } | |
1817 | ||
9ccb8af9 AM |
1818 | void symbol_dump (void); |
1819 | ||
252b5132 | 1820 | void |
a5324a3e | 1821 | symbol_dump (void) |
252b5132 RH |
1822 | { |
1823 | symbolS *symbolP; | |
1824 | ||
1825 | for (symbolP = symbol_rootP; symbolP; symbolP = symbol_next (symbolP)) | |
a5324a3e NC |
1826 | printf (_("0x%lx: \"%s\" type = %ld, class = %d, segment = %d\n"), |
1827 | (unsigned long) symbolP, | |
1828 | S_GET_NAME (symbolP), | |
1829 | (long) S_GET_DATA_TYPE (symbolP), | |
1830 | S_GET_STORAGE_CLASS (symbolP), | |
1831 | (int) S_GET_SEGMENT (symbolP)); | |
252b5132 RH |
1832 | } |
1833 | ||
1834 | #endif /* DEBUG */ | |
1835 | ||
7be1c489 | 1836 | const pseudo_typeS coff_pseudo_table[] = |
252b5132 | 1837 | { |
7be1c489 AM |
1838 | {"ABORT", s_abort, 0}, |
1839 | {"appline", obj_coff_ln, 1}, | |
1840 | /* We accept the .bss directive for backward compatibility with | |
1841 | earlier versions of gas. */ | |
1842 | {"bss", obj_coff_bss, 0}, | |
c1711530 DK |
1843 | #ifdef TE_PE |
1844 | /* PE provides an enhanced version of .comm with alignment. */ | |
1845 | {"comm", obj_coff_comm, 0}, | |
1846 | #endif /* TE_PE */ | |
7be1c489 AM |
1847 | {"def", obj_coff_def, 0}, |
1848 | {"dim", obj_coff_dim, 0}, | |
1849 | {"endef", obj_coff_endef, 0}, | |
1850 | {"ident", obj_coff_ident, 0}, | |
1851 | {"line", obj_coff_line, 0}, | |
1852 | {"ln", obj_coff_ln, 0}, | |
1853 | {"scl", obj_coff_scl, 0}, | |
1854 | {"sect", obj_coff_section, 0}, | |
1855 | {"sect.s", obj_coff_section, 0}, | |
1856 | {"section", obj_coff_section, 0}, | |
1857 | {"section.s", obj_coff_section, 0}, | |
1858 | /* FIXME: We ignore the MRI short attribute. */ | |
1859 | {"size", obj_coff_size, 0}, | |
1860 | {"tag", obj_coff_tag, 0}, | |
1861 | {"type", obj_coff_type, 0}, | |
1862 | {"val", obj_coff_val, 0}, | |
1863 | {"version", s_ignore, 0}, | |
1864 | {"loc", obj_coff_loc, 0}, | |
1865 | {"optim", s_ignore, 0}, /* For sun386i cc (?) */ | |
1866 | {"weak", obj_coff_weak, 0}, | |
1867 | #if defined TC_TIC4X | |
1868 | /* The tic4x uses sdef instead of def. */ | |
1869 | {"sdef", obj_coff_def, 0}, | |
f3d2b04b KT |
1870 | #endif |
1871 | #if defined(SEH_CMDS) | |
1872 | SEH_CMDS | |
252b5132 | 1873 | #endif |
7be1c489 AM |
1874 | {NULL, NULL, 0} |
1875 | }; | |
1876 | \f | |
252b5132 | 1877 | |
7be1c489 | 1878 | /* Support for a COFF emulation. */ |
252b5132 RH |
1879 | |
1880 | static void | |
7be1c489 | 1881 | coff_pop_insert (void) |
252b5132 | 1882 | { |
7be1c489 | 1883 | pop_insert (coff_pseudo_table); |
252b5132 RH |
1884 | } |
1885 | ||
a5324a3e | 1886 | static int |
7be1c489 | 1887 | coff_separate_stab_sections (void) |
a5324a3e | 1888 | { |
7be1c489 | 1889 | return 1; |
a5324a3e NC |
1890 | } |
1891 | ||
7be1c489 | 1892 | const struct format_ops coff_format_ops = |
252b5132 RH |
1893 | { |
1894 | bfd_target_coff_flavour, | |
4c63da97 AM |
1895 | 0, /* dfl_leading_underscore */ |
1896 | 1, /* emit_section_symbols */ | |
5110c57e HPN |
1897 | 0, /* begin */ |
1898 | c_dot_file_symbol, | |
252b5132 | 1899 | coff_frob_symbol, |
4c63da97 | 1900 | 0, /* frob_file */ |
339681c0 | 1901 | 0, /* frob_file_before_adjust */ |
a161fe53 | 1902 | 0, /* frob_file_before_fix */ |
252b5132 | 1903 | coff_frob_file_after_relocs, |
4c63da97 AM |
1904 | 0, /* s_get_size */ |
1905 | 0, /* s_set_size */ | |
1906 | 0, /* s_get_align */ | |
1907 | 0, /* s_set_align */ | |
1908 | 0, /* s_get_other */ | |
5110c57e | 1909 | 0, /* s_set_other */ |
4c63da97 | 1910 | 0, /* s_get_desc */ |
5110c57e HPN |
1911 | 0, /* s_set_desc */ |
1912 | 0, /* s_get_type */ | |
1913 | 0, /* s_set_type */ | |
4c63da97 AM |
1914 | 0, /* copy_symbol_attributes */ |
1915 | 0, /* generate_asm_lineno */ | |
1916 | 0, /* process_stab */ | |
5110c57e HPN |
1917 | coff_separate_stab_sections, |
1918 | obj_coff_init_stab_section, | |
4c63da97 | 1919 | 0, /* sec_sym_ok_for_reloc */ |
252b5132 | 1920 | coff_pop_insert, |
4c63da97 | 1921 | 0, /* ecoff_set_ext */ |
252b5132 | 1922 | coff_obj_read_begin_hook, |
4cae74aa | 1923 | coff_obj_symbol_new_hook, |
645ea3ea | 1924 | coff_obj_symbol_clone_hook, |
6309d591 | 1925 | coff_adjust_symtab |
252b5132 | 1926 | }; |