Commit | Line | Data |
---|---|---|
252b5132 | 1 | /* coff object file format |
2571583a | 2 | Copyright (C) 1989-2017 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 | 25 | #include "subsegs.h" |
c207c2c6 | 26 | #include "struc-symbol.h" |
252b5132 | 27 | |
977cdf5a NC |
28 | #ifdef TE_PE |
29 | #include "coff/pe.h" | |
30 | #endif | |
31 | ||
85645aed TG |
32 | #ifdef OBJ_XCOFF |
33 | #include "coff/xcoff.h" | |
34 | #endif | |
35 | ||
a5324a3e NC |
36 | #define streq(a,b) (strcmp ((a), (b)) == 0) |
37 | #define strneq(a,b,n) (strncmp ((a), (b), (n)) == 0) | |
38 | ||
252b5132 RH |
39 | /* I think this is probably always correct. */ |
40 | #ifndef KEEP_RELOC_INFO | |
41 | #define KEEP_RELOC_INFO | |
42 | #endif | |
43 | ||
7be1c489 AM |
44 | /* obj_coff_section will use this macro to set a new section's |
45 | attributes when a directive has no valid flags or the "w" flag is | |
46 | used. This default should be appropriate for most. */ | |
b8a9dcab NC |
47 | #ifndef TC_COFF_SECTION_DEFAULT_ATTRIBUTES |
48 | #define TC_COFF_SECTION_DEFAULT_ATTRIBUTES (SEC_LOAD | SEC_DATA) | |
49 | #endif | |
50 | ||
8d28c9d7 AM |
51 | /* This is used to hold the symbol built by a sequence of pseudo-ops |
52 | from .def and .endef. */ | |
53 | static symbolS *def_symbol_in_progress; | |
977cdf5a NC |
54 | #ifdef TE_PE |
55 | /* PE weak alternate symbols begin with this string. */ | |
56 | static const char weak_altprefix[] = ".weak."; | |
57 | #endif /* TE_PE */ | |
8d28c9d7 | 58 | |
f3d2b04b KT |
59 | #include "obj-coff-seh.c" |
60 | ||
8d28c9d7 AM |
61 | typedef struct |
62 | { | |
63 | unsigned long chunk_size; | |
64 | unsigned long element_size; | |
65 | unsigned long size; | |
66 | char *data; | |
67 | unsigned long pointer; | |
68 | } | |
69 | stack; | |
70 | ||
252b5132 | 71 | \f |
a5324a3e | 72 | /* Stack stuff. */ |
252b5132 RH |
73 | |
74 | static stack * | |
a5324a3e NC |
75 | stack_init (unsigned long chunk_size, |
76 | unsigned long element_size) | |
252b5132 RH |
77 | { |
78 | stack *st; | |
79 | ||
add39d23 TS |
80 | st = XNEW (stack); |
81 | st->data = XNEWVEC (char, chunk_size); | |
252b5132 RH |
82 | if (!st->data) |
83 | { | |
84 | free (st); | |
a5324a3e | 85 | return NULL; |
252b5132 RH |
86 | } |
87 | st->pointer = 0; | |
88 | st->size = chunk_size; | |
89 | st->chunk_size = chunk_size; | |
90 | st->element_size = element_size; | |
91 | return st; | |
92 | } | |
93 | ||
252b5132 | 94 | static char * |
a5324a3e | 95 | stack_push (stack *st, char *element) |
252b5132 RH |
96 | { |
97 | if (st->pointer + st->element_size >= st->size) | |
98 | { | |
99 | st->size += st->chunk_size; | |
add39d23 | 100 | st->data = XRESIZEVEC (char, st->data, st->size); |
252b5132 RH |
101 | } |
102 | memcpy (st->data + st->pointer, element, st->element_size); | |
103 | st->pointer += st->element_size; | |
104 | return st->data + st->pointer; | |
105 | } | |
106 | ||
107 | static char * | |
a5324a3e | 108 | stack_pop (stack *st) |
252b5132 RH |
109 | { |
110 | if (st->pointer < st->element_size) | |
111 | { | |
112 | st->pointer = 0; | |
a5324a3e | 113 | return NULL; |
252b5132 RH |
114 | } |
115 | st->pointer -= st->element_size; | |
116 | return st->data + st->pointer; | |
117 | } | |
118 | \f | |
a5324a3e | 119 | /* Maintain a list of the tagnames of the structures. */ |
252b5132 RH |
120 | |
121 | static struct hash_control *tag_hash; | |
122 | ||
123 | static void | |
a5324a3e | 124 | tag_init (void) |
252b5132 RH |
125 | { |
126 | tag_hash = hash_new (); | |
127 | } | |
128 | ||
129 | static void | |
a5324a3e | 130 | tag_insert (const char *name, symbolS *symbolP) |
252b5132 RH |
131 | { |
132 | const char *error_string; | |
133 | ||
134 | if ((error_string = hash_jam (tag_hash, name, (char *) symbolP))) | |
a5324a3e NC |
135 | as_fatal (_("Inserting \"%s\" into structure table failed: %s"), |
136 | name, error_string); | |
252b5132 RH |
137 | } |
138 | ||
139 | static symbolS * | |
a5324a3e | 140 | tag_find (char *name) |
252b5132 | 141 | { |
252b5132 RH |
142 | return (symbolS *) hash_find (tag_hash, name); |
143 | } | |
144 | ||
145 | static symbolS * | |
a5324a3e | 146 | tag_find_or_make (char *name) |
252b5132 RH |
147 | { |
148 | symbolS *symbolP; | |
149 | ||
150 | if ((symbolP = tag_find (name)) == NULL) | |
151 | { | |
152 | symbolP = symbol_new (name, undefined_section, | |
153 | 0, &zero_address_frag); | |
154 | ||
155 | tag_insert (S_GET_NAME (symbolP), symbolP); | |
252b5132 | 156 | symbol_table_insert (symbolP); |
a5324a3e | 157 | } |
252b5132 RH |
158 | |
159 | return symbolP; | |
160 | } | |
161 | ||
162 | /* We accept the .bss directive to set the section for backward | |
163 | compatibility with earlier versions of gas. */ | |
164 | ||
165 | static void | |
a5324a3e | 166 | obj_coff_bss (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
167 | { |
168 | if (*input_line_pointer == '\n') | |
169 | subseg_new (".bss", get_absolute_expression ()); | |
170 | else | |
171 | s_lcomm (0); | |
172 | } | |
173 | ||
c1711530 DK |
174 | #ifdef TE_PE |
175 | /* Called from read.c:s_comm after we've parsed .comm symbol, size. | |
176 | Parse a possible alignment value. */ | |
177 | ||
178 | static symbolS * | |
179 | obj_coff_common_parse (int ignore ATTRIBUTE_UNUSED, symbolS *symbolP, addressT size) | |
180 | { | |
181 | addressT align = 0; | |
182 | ||
183 | if (*input_line_pointer == ',') | |
184 | { | |
185 | align = parse_align (0); | |
186 | if (align == (addressT) -1) | |
187 | return NULL; | |
188 | } | |
189 | ||
190 | S_SET_VALUE (symbolP, size); | |
191 | S_SET_EXTERNAL (symbolP); | |
192 | S_SET_SEGMENT (symbolP, bfd_com_section_ptr); | |
193 | ||
194 | symbol_get_bfdsym (symbolP)->flags |= BSF_OBJECT; | |
195 | ||
196 | /* There is no S_SET_ALIGN (symbolP, align) in COFF/PE. | |
197 | Instead we must add a note to the .drectve section. */ | |
198 | if (align) | |
199 | { | |
200 | segT current_seg = now_seg; | |
201 | subsegT current_subseg = now_subseg; | |
202 | flagword oldflags; | |
203 | asection *sec; | |
204 | size_t pfxlen, numlen; | |
205 | char *frag; | |
206 | char numbuff[20]; | |
207 | ||
208 | sec = subseg_new (".drectve", 0); | |
209 | oldflags = bfd_get_section_flags (stdoutput, sec); | |
210 | if (oldflags == SEC_NO_FLAGS) | |
211 | { | |
212 | if (!bfd_set_section_flags (stdoutput, sec, | |
213 | TC_COFF_SECTION_DEFAULT_ATTRIBUTES)) | |
214 | as_warn (_("error setting flags for \"%s\": %s"), | |
215 | bfd_section_name (stdoutput, sec), | |
216 | bfd_errmsg (bfd_get_error ())); | |
217 | } | |
218 | ||
219 | /* Emit a string. Note no NUL-termination. */ | |
a7879ef1 | 220 | pfxlen = strlen (" -aligncomm:") + 2 + strlen (S_GET_NAME (symbolP)) + 1; |
c1711530 DK |
221 | numlen = snprintf (numbuff, sizeof (numbuff), "%d", (int) align); |
222 | frag = frag_more (pfxlen + numlen); | |
a7879ef1 | 223 | (void) sprintf (frag, " -aligncomm:\"%s\",", S_GET_NAME (symbolP)); |
c1711530 DK |
224 | memcpy (frag + pfxlen, numbuff, numlen); |
225 | /* Restore original subseg. */ | |
226 | subseg_set (current_seg, current_subseg); | |
227 | } | |
228 | ||
229 | return symbolP; | |
230 | } | |
231 | ||
232 | static void | |
233 | obj_coff_comm (int ignore ATTRIBUTE_UNUSED) | |
234 | { | |
235 | s_comm_internal (ignore, obj_coff_common_parse); | |
236 | } | |
237 | #endif /* TE_PE */ | |
238 | ||
252b5132 | 239 | #define GET_FILENAME_STRING(X) \ |
a5324a3e | 240 | ((char *) (&((X)->sy_symbol.ost_auxent->x_file.x_n.x_offset))[1]) |
252b5132 RH |
241 | |
242 | /* @@ Ick. */ | |
243 | static segT | |
a5324a3e | 244 | fetch_coff_debug_section (void) |
252b5132 RH |
245 | { |
246 | static segT debug_section; | |
a5324a3e | 247 | |
252b5132 RH |
248 | if (!debug_section) |
249 | { | |
5a38dc70 | 250 | const asymbol *s; |
a5324a3e NC |
251 | |
252 | s = bfd_make_debug_symbol (stdoutput, NULL, 0); | |
9c2799c2 | 253 | gas_assert (s != 0); |
252b5132 RH |
254 | debug_section = s->section; |
255 | } | |
256 | return debug_section; | |
257 | } | |
258 | ||
259 | void | |
a5324a3e | 260 | SA_SET_SYM_ENDNDX (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_fcnary.x_fcn.x_endndx.p = p; |
267 | entry->fix_end = 1; | |
268 | } | |
269 | ||
270 | static void | |
a5324a3e | 271 | SA_SET_SYM_TAGNDX (symbolS *sym, symbolS *val) |
252b5132 RH |
272 | { |
273 | combined_entry_type *entry, *p; | |
274 | ||
49309057 ILT |
275 | entry = &coffsymbol (symbol_get_bfdsym (sym))->native[1]; |
276 | p = coffsymbol (symbol_get_bfdsym (val))->native; | |
252b5132 RH |
277 | entry->u.auxent.x_sym.x_tagndx.p = p; |
278 | entry->fix_tag = 1; | |
279 | } | |
280 | ||
281 | static int | |
a5324a3e | 282 | S_GET_DATA_TYPE (symbolS *sym) |
252b5132 | 283 | { |
49309057 | 284 | return coffsymbol (symbol_get_bfdsym (sym))->native->u.syment.n_type; |
252b5132 RH |
285 | } |
286 | ||
287 | int | |
a5324a3e | 288 | S_SET_DATA_TYPE (symbolS *sym, int val) |
252b5132 | 289 | { |
49309057 | 290 | coffsymbol (symbol_get_bfdsym (sym))->native->u.syment.n_type = val; |
252b5132 RH |
291 | return val; |
292 | } | |
293 | ||
294 | int | |
a5324a3e | 295 | S_GET_STORAGE_CLASS (symbolS *sym) |
252b5132 | 296 | { |
49309057 | 297 | return coffsymbol (symbol_get_bfdsym (sym))->native->u.syment.n_sclass; |
252b5132 RH |
298 | } |
299 | ||
300 | int | |
a5324a3e | 301 | S_SET_STORAGE_CLASS (symbolS *sym, int val) |
252b5132 | 302 | { |
49309057 | 303 | coffsymbol (symbol_get_bfdsym (sym))->native->u.syment.n_sclass = val; |
252b5132 RH |
304 | return val; |
305 | } | |
306 | ||
dcd619be | 307 | /* Merge a debug symbol containing debug information into a normal symbol. */ |
252b5132 | 308 | |
a5324a3e NC |
309 | static void |
310 | c_symbol_merge (symbolS *debug, symbolS *normal) | |
252b5132 RH |
311 | { |
312 | S_SET_DATA_TYPE (normal, S_GET_DATA_TYPE (debug)); | |
313 | S_SET_STORAGE_CLASS (normal, S_GET_STORAGE_CLASS (debug)); | |
314 | ||
315 | if (S_GET_NUMBER_AUXILIARY (debug) > S_GET_NUMBER_AUXILIARY (normal)) | |
a5324a3e NC |
316 | /* Take the most we have. */ |
317 | S_SET_NUMBER_AUXILIARY (normal, S_GET_NUMBER_AUXILIARY (debug)); | |
252b5132 RH |
318 | |
319 | if (S_GET_NUMBER_AUXILIARY (debug) > 0) | |
a5324a3e NC |
320 | /* Move all the auxiliary information. */ |
321 | memcpy (SYM_AUXINFO (normal), SYM_AUXINFO (debug), | |
322 | (S_GET_NUMBER_AUXILIARY (debug) | |
323 | * sizeof (*SYM_AUXINFO (debug)))); | |
252b5132 | 324 | |
dcd619be | 325 | /* Move the debug flags. */ |
252b5132 RH |
326 | SF_SET_DEBUG_FIELD (normal, SF_GET_DEBUG_FIELD (debug)); |
327 | } | |
328 | ||
329 | void | |
a4528eeb | 330 | c_dot_file_symbol (const char *filename, int appfile ATTRIBUTE_UNUSED) |
252b5132 RH |
331 | { |
332 | symbolS *symbolP; | |
333 | ||
0561a208 ILT |
334 | /* BFD converts filename to a .file symbol with an aux entry. It |
335 | also handles chaining. */ | |
252b5132 RH |
336 | symbolP = symbol_new (filename, bfd_abs_section_ptr, 0, &zero_address_frag); |
337 | ||
338 | S_SET_STORAGE_CLASS (symbolP, C_FILE); | |
339 | S_SET_NUMBER_AUXILIARY (symbolP, 1); | |
340 | ||
49309057 | 341 | symbol_get_bfdsym (symbolP)->flags = BSF_DEBUGGING; |
252b5132 RH |
342 | |
343 | #ifndef NO_LISTING | |
344 | { | |
345 | extern int listing; | |
a5324a3e | 346 | |
252b5132 | 347 | if (listing) |
a5324a3e | 348 | listing_source_file (filename); |
252b5132 RH |
349 | } |
350 | #endif | |
351 | ||
a5324a3e | 352 | /* Make sure that the symbol is first on the symbol chain. */ |
252b5132 RH |
353 | if (symbol_rootP != symbolP) |
354 | { | |
355 | symbol_remove (symbolP, &symbol_rootP, &symbol_lastP); | |
356 | symbol_insert (symbolP, symbol_rootP, &symbol_rootP, &symbol_lastP); | |
a5324a3e | 357 | } |
252b5132 RH |
358 | } |
359 | ||
a5324a3e | 360 | /* Line number handling. */ |
252b5132 | 361 | |
a5324a3e NC |
362 | struct line_no |
363 | { | |
252b5132 RH |
364 | struct line_no *next; |
365 | fragS *frag; | |
366 | alent l; | |
367 | }; | |
368 | ||
369 | int coff_line_base; | |
370 | ||
371 | /* Symbol of last function, which we should hang line#s off of. */ | |
372 | static symbolS *line_fsym; | |
373 | ||
374 | #define in_function() (line_fsym != 0) | |
375 | #define clear_function() (line_fsym = 0) | |
376 | #define set_function(F) (line_fsym = (F), coff_add_linesym (F)) | |
377 | ||
378 | \f | |
379 | void | |
a5324a3e | 380 | coff_obj_symbol_new_hook (symbolS *symbolP) |
252b5132 RH |
381 | { |
382 | long sz = (OBJ_COFF_MAX_AUXENTRIES + 1) * sizeof (combined_entry_type); | |
add39d23 | 383 | char * s = XNEWVEC (char, sz); |
dcd619be | 384 | |
252b5132 | 385 | memset (s, 0, sz); |
49309057 | 386 | coffsymbol (symbol_get_bfdsym (symbolP))->native = (combined_entry_type *) s; |
a5c71af8 | 387 | coffsymbol (symbol_get_bfdsym (symbolP))->native->is_sym = TRUE; |
252b5132 RH |
388 | |
389 | S_SET_DATA_TYPE (symbolP, T_NULL); | |
390 | S_SET_STORAGE_CLASS (symbolP, 0); | |
391 | S_SET_NUMBER_AUXILIARY (symbolP, 0); | |
392 | ||
393 | if (S_IS_STRING (symbolP)) | |
394 | SF_SET_STRING (symbolP); | |
dcd619be | 395 | |
252b5132 RH |
396 | if (S_IS_LOCAL (symbolP)) |
397 | SF_SET_LOCAL (symbolP); | |
398 | } | |
399 | ||
6a2b6326 JB |
400 | void |
401 | coff_obj_symbol_clone_hook (symbolS *newsymP, symbolS *orgsymP) | |
402 | { | |
add39d23 TS |
403 | long elts = OBJ_COFF_MAX_AUXENTRIES + 1; |
404 | combined_entry_type * s = XNEWVEC (combined_entry_type, elts); | |
6a2b6326 | 405 | |
add39d23 TS |
406 | memcpy (s, coffsymbol (symbol_get_bfdsym (orgsymP))->native, |
407 | elts * sizeof (combined_entry_type)); | |
6a2b6326 JB |
408 | coffsymbol (symbol_get_bfdsym (newsymP))->native = s; |
409 | ||
410 | SF_SET (newsymP, SF_GET (orgsymP)); | |
411 | } | |
412 | ||
252b5132 | 413 | \f |
a5324a3e | 414 | /* Handle .ln directives. */ |
252b5132 RH |
415 | |
416 | static symbolS *current_lineno_sym; | |
417 | static struct line_no *line_nos; | |
a5324a3e | 418 | /* FIXME: Blindly assume all .ln directives will be in the .text section. */ |
252b5132 RH |
419 | int coff_n_line_nos; |
420 | ||
421 | static void | |
a5324a3e | 422 | add_lineno (fragS * frag, addressT offset, int num) |
252b5132 | 423 | { |
add39d23 | 424 | struct line_no * new_line = XNEW (struct line_no); |
a5324a3e | 425 | |
252b5132 | 426 | if (!current_lineno_sym) |
a5324a3e | 427 | abort (); |
6877bb43 TR |
428 | |
429 | #ifndef OBJ_XCOFF | |
a5324a3e | 430 | /* The native aix assembler accepts negative line number. */ |
6877bb43 | 431 | |
dcd619be | 432 | if (num <= 0) |
e8a3ab75 ILT |
433 | { |
434 | /* Zero is used as an end marker in the file. */ | |
b985eaa8 ILT |
435 | as_warn (_("Line numbers must be positive integers\n")); |
436 | num = 1; | |
e8a3ab75 | 437 | } |
6877bb43 | 438 | #endif /* OBJ_XCOFF */ |
252b5132 RH |
439 | new_line->next = line_nos; |
440 | new_line->frag = frag; | |
441 | new_line->l.line_number = num; | |
442 | new_line->l.u.offset = offset; | |
443 | line_nos = new_line; | |
444 | coff_n_line_nos++; | |
445 | } | |
446 | ||
447 | void | |
a5324a3e | 448 | coff_add_linesym (symbolS *sym) |
252b5132 RH |
449 | { |
450 | if (line_nos) | |
451 | { | |
49309057 ILT |
452 | coffsymbol (symbol_get_bfdsym (current_lineno_sym))->lineno = |
453 | (alent *) line_nos; | |
252b5132 RH |
454 | coff_n_line_nos++; |
455 | line_nos = 0; | |
456 | } | |
457 | current_lineno_sym = sym; | |
458 | } | |
459 | ||
460 | static void | |
a5324a3e | 461 | obj_coff_ln (int appline) |
252b5132 RH |
462 | { |
463 | int l; | |
464 | ||
465 | if (! appline && def_symbol_in_progress != NULL) | |
466 | { | |
467 | as_warn (_(".ln pseudo-op inside .def/.endef: ignored.")); | |
468 | demand_empty_rest_of_line (); | |
469 | return; | |
470 | } | |
471 | ||
472 | l = get_absolute_expression (); | |
252b5132 | 473 | |
e237d851 NC |
474 | /* If there is no lineno symbol, treat a .ln |
475 | directive as if it were a .appline directive. */ | |
476 | if (appline || current_lineno_sym == NULL) | |
252b5132 | 477 | new_logical_line ((char *) NULL, l - 1); |
e237d851 NC |
478 | else |
479 | add_lineno (frag_now, frag_now_fix (), l); | |
252b5132 RH |
480 | |
481 | #ifndef NO_LISTING | |
482 | { | |
483 | extern int listing; | |
484 | ||
485 | if (listing) | |
486 | { | |
487 | if (! appline) | |
488 | l += coff_line_base - 1; | |
489 | listing_source_line (l); | |
490 | } | |
491 | } | |
492 | #endif | |
493 | ||
494 | demand_empty_rest_of_line (); | |
495 | } | |
496 | ||
28428223 ILT |
497 | /* .loc is essentially the same as .ln; parse it for assembler |
498 | compatibility. */ | |
499 | ||
500 | static void | |
a5324a3e | 501 | obj_coff_loc (int ignore ATTRIBUTE_UNUSED) |
28428223 ILT |
502 | { |
503 | int lineno; | |
504 | ||
505 | /* FIXME: Why do we need this check? We need it for ECOFF, but why | |
506 | do we need it for COFF? */ | |
507 | if (now_seg != text_section) | |
508 | { | |
509 | as_warn (_(".loc outside of .text")); | |
510 | demand_empty_rest_of_line (); | |
511 | return; | |
512 | } | |
513 | ||
514 | if (def_symbol_in_progress != NULL) | |
515 | { | |
516 | as_warn (_(".loc pseudo-op inside .def/.endef: ignored.")); | |
517 | demand_empty_rest_of_line (); | |
518 | return; | |
519 | } | |
520 | ||
521 | /* Skip the file number. */ | |
522 | SKIP_WHITESPACE (); | |
523 | get_absolute_expression (); | |
524 | SKIP_WHITESPACE (); | |
525 | ||
526 | lineno = get_absolute_expression (); | |
527 | ||
528 | #ifndef NO_LISTING | |
529 | { | |
530 | extern int listing; | |
531 | ||
532 | if (listing) | |
533 | { | |
cc8a6dd0 | 534 | lineno += coff_line_base - 1; |
28428223 ILT |
535 | listing_source_line (lineno); |
536 | } | |
537 | } | |
538 | #endif | |
539 | ||
540 | demand_empty_rest_of_line (); | |
541 | ||
542 | add_lineno (frag_now, frag_now_fix (), lineno); | |
543 | } | |
544 | ||
7a6284c4 ILT |
545 | /* Handle the .ident pseudo-op. */ |
546 | ||
547 | static void | |
a5324a3e | 548 | obj_coff_ident (int ignore ATTRIBUTE_UNUSED) |
7a6284c4 ILT |
549 | { |
550 | segT current_seg = now_seg; | |
551 | subsegT current_subseg = now_subseg; | |
552 | ||
553 | #ifdef TE_PE | |
554 | { | |
555 | segT sec; | |
556 | ||
557 | /* We could put it in .comment, but that creates an extra section | |
558 | that shouldn't be loaded into memory, which requires linker | |
559 | changes... For now, until proven otherwise, use .rdata. */ | |
560 | sec = subseg_new (".rdata$zzz", 0); | |
561 | bfd_set_section_flags (stdoutput, sec, | |
562 | ((SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_DATA) | |
563 | & bfd_applicable_section_flags (stdoutput))); | |
564 | } | |
565 | #else | |
566 | subseg_new (".comment", 0); | |
567 | #endif | |
568 | ||
38a57ae7 | 569 | stringer (8 + 1); |
7a6284c4 ILT |
570 | subseg_set (current_seg, current_subseg); |
571 | } | |
572 | ||
a5324a3e NC |
573 | /* Handle .def directives. |
574 | ||
575 | One might ask : why can't we symbol_new if the symbol does not | |
576 | already exist and fill it with debug information. Because of | |
577 | the C_EFCN special symbol. It would clobber the value of the | |
578 | function symbol before we have a chance to notice that it is | |
579 | a C_EFCN. And a second reason is that the code is more clear this | |
580 | way. (at least I think it is :-). */ | |
252b5132 RH |
581 | |
582 | #define SKIP_SEMI_COLON() while (*input_line_pointer++ != ';') | |
583 | #define SKIP_WHITESPACES() while (*input_line_pointer == ' ' || \ | |
a5324a3e NC |
584 | *input_line_pointer == '\t') \ |
585 | input_line_pointer++; | |
252b5132 RH |
586 | |
587 | static void | |
a5324a3e | 588 | obj_coff_def (int what ATTRIBUTE_UNUSED) |
252b5132 | 589 | { |
a5324a3e NC |
590 | char name_end; /* Char after the end of name. */ |
591 | char *symbol_name; /* Name of the debug symbol. */ | |
592 | char *symbol_name_copy; /* Temporary copy of the name. */ | |
252b5132 RH |
593 | |
594 | if (def_symbol_in_progress != NULL) | |
595 | { | |
596 | as_warn (_(".def pseudo-op used inside of .def/.endef: ignored.")); | |
597 | demand_empty_rest_of_line (); | |
598 | return; | |
a5324a3e | 599 | } |
252b5132 RH |
600 | |
601 | SKIP_WHITESPACES (); | |
602 | ||
d02603dc | 603 | name_end = get_symbol_name (&symbol_name); |
29a2809e | 604 | symbol_name_copy = xstrdup (symbol_name); |
252b5132 RH |
605 | #ifdef tc_canonicalize_symbol_name |
606 | symbol_name_copy = tc_canonicalize_symbol_name (symbol_name_copy); | |
607 | #endif | |
608 | ||
a5324a3e | 609 | /* Initialize the new symbol. */ |
252b5132 | 610 | def_symbol_in_progress = symbol_make (symbol_name_copy); |
49309057 | 611 | symbol_set_frag (def_symbol_in_progress, &zero_address_frag); |
252b5132 RH |
612 | S_SET_VALUE (def_symbol_in_progress, 0); |
613 | ||
614 | if (S_IS_STRING (def_symbol_in_progress)) | |
615 | SF_SET_STRING (def_symbol_in_progress); | |
616 | ||
d02603dc | 617 | (void) restore_line_pointer (name_end); |
252b5132 RH |
618 | |
619 | demand_empty_rest_of_line (); | |
620 | } | |
621 | ||
252b5132 | 622 | static void |
a5324a3e | 623 | obj_coff_endef (int ignore ATTRIBUTE_UNUSED) |
252b5132 | 624 | { |
c9900432 | 625 | symbolS *symbolP = NULL; |
252b5132 | 626 | |
252b5132 RH |
627 | if (def_symbol_in_progress == NULL) |
628 | { | |
629 | as_warn (_(".endef pseudo-op used outside of .def/.endef: ignored.")); | |
630 | demand_empty_rest_of_line (); | |
631 | return; | |
a5324a3e | 632 | } |
252b5132 | 633 | |
dcd619be | 634 | /* Set the section number according to storage class. */ |
252b5132 RH |
635 | switch (S_GET_STORAGE_CLASS (def_symbol_in_progress)) |
636 | { | |
637 | case C_STRTAG: | |
638 | case C_ENTAG: | |
639 | case C_UNTAG: | |
640 | SF_SET_TAG (def_symbol_in_progress); | |
a5324a3e | 641 | /* Fall through. */ |
252b5132 RH |
642 | case C_FILE: |
643 | case C_TPDEF: | |
644 | SF_SET_DEBUG (def_symbol_in_progress); | |
645 | S_SET_SEGMENT (def_symbol_in_progress, fetch_coff_debug_section ()); | |
646 | break; | |
647 | ||
648 | case C_EFCN: | |
dcd619be | 649 | SF_SET_LOCAL (def_symbol_in_progress); /* Do not emit this symbol. */ |
a5324a3e | 650 | /* Fall through. */ |
252b5132 | 651 | case C_BLOCK: |
a5324a3e NC |
652 | SF_SET_PROCESS (def_symbol_in_progress); /* Will need processing before writing. */ |
653 | /* Fall through. */ | |
252b5132 RH |
654 | case C_FCN: |
655 | { | |
5a38dc70 | 656 | const char *name; |
a5324a3e | 657 | |
252b5132 RH |
658 | S_SET_SEGMENT (def_symbol_in_progress, text_section); |
659 | ||
49309057 | 660 | name = S_GET_NAME (def_symbol_in_progress); |
23dab925 | 661 | if (name[0] == '.' && name[2] == 'f' && name[3] == '\0') |
cc8a6dd0 | 662 | { |
23dab925 ILT |
663 | switch (name[1]) |
664 | { | |
dcd619be | 665 | case 'b': |
23dab925 ILT |
666 | /* .bf */ |
667 | if (! in_function ()) | |
668 | as_warn (_("`%s' symbol without preceding function"), name); | |
669 | /* Will need relocating. */ | |
670 | SF_SET_PROCESS (def_symbol_in_progress); | |
671 | clear_function (); | |
672 | break; | |
673 | #ifdef TE_PE | |
dcd619be | 674 | case 'e': |
23dab925 ILT |
675 | /* .ef */ |
676 | /* The MS compilers output the actual endline, not the | |
677 | function-relative one... we want to match without | |
678 | changing the assembler input. */ | |
dcd619be | 679 | SA_SET_SYM_LNNO (def_symbol_in_progress, |
23dab925 ILT |
680 | (SA_GET_SYM_LNNO (def_symbol_in_progress) |
681 | + coff_line_base)); | |
682 | break; | |
683 | #endif | |
684 | } | |
252b5132 RH |
685 | } |
686 | } | |
687 | break; | |
688 | ||
689 | #ifdef C_AUTOARG | |
690 | case C_AUTOARG: | |
691 | #endif /* C_AUTOARG */ | |
692 | case C_AUTO: | |
693 | case C_REG: | |
694 | case C_ARG: | |
695 | case C_REGPARM: | |
696 | case C_FIELD: | |
56385375 L |
697 | |
698 | /* According to the COFF documentation: | |
699 | ||
700 | http://osr5doc.sco.com:1996/topics/COFF_SectNumFld.html | |
701 | ||
702 | A special section number (-2) marks symbolic debugging symbols, | |
703 | including structure/union/enumeration tag names, typedefs, and | |
dcd619be | 704 | the name of the file. A section number of -1 indicates that the |
56385375 | 705 | symbol has a value but is not relocatable. Examples of |
dcd619be KH |
706 | absolute-valued symbols include automatic and register variables, |
707 | function arguments, and .eos symbols. | |
56385375 L |
708 | |
709 | But from Ian Lance Taylor: | |
710 | ||
711 | http://sources.redhat.com/ml/binutils/2000-08/msg00202.html | |
712 | ||
713 | the actual tools all marked them as section -1. So the GNU COFF | |
714 | assembler follows historical COFF assemblers. | |
715 | ||
716 | However, it causes problems for djgpp | |
717 | ||
718 | http://sources.redhat.com/ml/binutils/2000-08/msg00210.html | |
719 | ||
720 | By defining STRICTCOFF, a COFF port can make the assembler to | |
dcd619be | 721 | follow the documented behavior. */ |
56385375 | 722 | #ifdef STRICTCOFF |
252b5132 RH |
723 | case C_MOS: |
724 | case C_MOE: | |
725 | case C_MOU: | |
726 | case C_EOS: | |
56385375 | 727 | #endif |
d1d8ba22 | 728 | SF_SET_DEBUG (def_symbol_in_progress); |
252b5132 RH |
729 | S_SET_SEGMENT (def_symbol_in_progress, absolute_section); |
730 | break; | |
731 | ||
56385375 L |
732 | #ifndef STRICTCOFF |
733 | case C_MOS: | |
734 | case C_MOE: | |
735 | case C_MOU: | |
736 | case C_EOS: | |
737 | S_SET_SEGMENT (def_symbol_in_progress, absolute_section); | |
738 | break; | |
739 | #endif | |
740 | ||
252b5132 RH |
741 | case C_EXT: |
742 | case C_WEAKEXT: | |
743 | #ifdef TE_PE | |
744 | case C_NT_WEAK: | |
745 | #endif | |
746 | case C_STAT: | |
747 | case C_LABEL: | |
a5324a3e | 748 | /* Valid but set somewhere else (s_comm, s_lcomm, colon). */ |
252b5132 RH |
749 | break; |
750 | ||
751 | default: | |
752 | case C_USTATIC: | |
753 | case C_EXTDEF: | |
754 | case C_ULABEL: | |
755 | as_warn (_("unexpected storage class %d"), | |
756 | S_GET_STORAGE_CLASS (def_symbol_in_progress)); | |
757 | break; | |
a5324a3e | 758 | } |
252b5132 RH |
759 | |
760 | /* Now that we have built a debug symbol, try to find if we should | |
761 | merge with an existing symbol or not. If a symbol is C_EFCN or | |
9690c54d ILT |
762 | absolute_section or untagged SEG_DEBUG it never merges. We also |
763 | don't merge labels, which are in a different namespace, nor | |
764 | symbols which have not yet been defined since they are typically | |
765 | unique, nor do we merge tags with non-tags. */ | |
252b5132 RH |
766 | |
767 | /* Two cases for functions. Either debug followed by definition or | |
768 | definition followed by debug. For definition first, we will | |
769 | merge the debug symbol into the definition. For debug first, the | |
770 | lineno entry MUST point to the definition function or else it | |
771 | will point off into space when obj_crawl_symbol_chain() merges | |
772 | the debug symbol into the real symbol. Therefor, let's presume | |
dcd619be | 773 | the debug symbol is a real function reference. */ |
252b5132 RH |
774 | |
775 | /* FIXME-SOON If for some reason the definition label/symbol is | |
776 | never seen, this will probably leave an undefined symbol at link | |
dcd619be | 777 | time. */ |
252b5132 RH |
778 | |
779 | if (S_GET_STORAGE_CLASS (def_symbol_in_progress) == C_EFCN | |
9690c54d | 780 | || S_GET_STORAGE_CLASS (def_symbol_in_progress) == C_LABEL |
a5324a3e NC |
781 | || (streq (bfd_get_section_name (stdoutput, |
782 | S_GET_SEGMENT (def_symbol_in_progress)), | |
783 | "*DEBUG*") | |
252b5132 RH |
784 | && !SF_GET_TAG (def_symbol_in_progress)) |
785 | || S_GET_SEGMENT (def_symbol_in_progress) == absolute_section | |
9690c54d | 786 | || ! symbol_constant_p (def_symbol_in_progress) |
91c4c449 | 787 | || (symbolP = symbol_find (S_GET_NAME (def_symbol_in_progress))) == NULL |
9690c54d | 788 | || SF_GET_TAG (def_symbol_in_progress) != SF_GET_TAG (symbolP)) |
252b5132 | 789 | { |
9690c54d | 790 | /* If it already is at the end of the symbol list, do nothing */ |
252b5132 | 791 | if (def_symbol_in_progress != symbol_lastP) |
cc8a6dd0 | 792 | { |
9690c54d ILT |
793 | symbol_remove (def_symbol_in_progress, &symbol_rootP, &symbol_lastP); |
794 | symbol_append (def_symbol_in_progress, symbol_lastP, &symbol_rootP, | |
795 | &symbol_lastP); | |
cc8a6dd0 | 796 | } |
252b5132 RH |
797 | } |
798 | else | |
799 | { | |
800 | /* This symbol already exists, merge the newly created symbol | |
801 | into the old one. This is not mandatory. The linker can | |
802 | handle duplicate symbols correctly. But I guess that it save | |
803 | a *lot* of space if the assembly file defines a lot of | |
a5324a3e | 804 | symbols. [loic] */ |
252b5132 RH |
805 | |
806 | /* The debug entry (def_symbol_in_progress) is merged into the | |
dcd619be | 807 | previous definition. */ |
252b5132 RH |
808 | |
809 | c_symbol_merge (def_symbol_in_progress, symbolP); | |
810 | symbol_remove (def_symbol_in_progress, &symbol_rootP, &symbol_lastP); | |
811 | ||
812 | def_symbol_in_progress = symbolP; | |
813 | ||
814 | if (SF_GET_FUNCTION (def_symbol_in_progress) | |
815 | || SF_GET_TAG (def_symbol_in_progress) | |
816 | || S_GET_STORAGE_CLASS (def_symbol_in_progress) == C_STAT) | |
817 | { | |
818 | /* For functions, and tags, and static symbols, the symbol | |
819 | *must* be where the debug symbol appears. Move the | |
dcd619be | 820 | existing symbol to the current place. */ |
a5324a3e | 821 | /* If it already is at the end of the symbol list, do nothing. */ |
252b5132 RH |
822 | if (def_symbol_in_progress != symbol_lastP) |
823 | { | |
824 | symbol_remove (def_symbol_in_progress, &symbol_rootP, &symbol_lastP); | |
825 | symbol_append (def_symbol_in_progress, symbol_lastP, &symbol_rootP, &symbol_lastP); | |
826 | } | |
827 | } | |
828 | } | |
829 | ||
830 | if (SF_GET_TAG (def_symbol_in_progress)) | |
831 | { | |
832 | symbolS *oldtag; | |
833 | ||
91c4c449 | 834 | oldtag = symbol_find (S_GET_NAME (def_symbol_in_progress)); |
252b5132 RH |
835 | if (oldtag == NULL || ! SF_GET_TAG (oldtag)) |
836 | tag_insert (S_GET_NAME (def_symbol_in_progress), | |
837 | def_symbol_in_progress); | |
838 | } | |
839 | ||
840 | if (SF_GET_FUNCTION (def_symbol_in_progress)) | |
841 | { | |
252b5132 RH |
842 | set_function (def_symbol_in_progress); |
843 | SF_SET_PROCESS (def_symbol_in_progress); | |
844 | ||
845 | if (symbolP == NULL) | |
a5324a3e NC |
846 | /* That is, if this is the first time we've seen the |
847 | function. */ | |
848 | symbol_table_insert (def_symbol_in_progress); | |
849 | ||
850 | } | |
252b5132 RH |
851 | |
852 | def_symbol_in_progress = NULL; | |
853 | demand_empty_rest_of_line (); | |
854 | } | |
855 | ||
856 | static void | |
a5324a3e | 857 | obj_coff_dim (int ignore ATTRIBUTE_UNUSED) |
252b5132 | 858 | { |
91d6fa6a | 859 | int d_index; |
252b5132 RH |
860 | |
861 | if (def_symbol_in_progress == NULL) | |
862 | { | |
863 | as_warn (_(".dim pseudo-op used outside of .def/.endef: ignored.")); | |
864 | demand_empty_rest_of_line (); | |
865 | return; | |
a5324a3e | 866 | } |
252b5132 RH |
867 | |
868 | S_SET_NUMBER_AUXILIARY (def_symbol_in_progress, 1); | |
869 | ||
91d6fa6a | 870 | for (d_index = 0; d_index < DIMNUM; d_index++) |
252b5132 RH |
871 | { |
872 | SKIP_WHITESPACES (); | |
91d6fa6a | 873 | SA_SET_SYM_DIMEN (def_symbol_in_progress, d_index, |
252b5132 RH |
874 | get_absolute_expression ()); |
875 | ||
876 | switch (*input_line_pointer) | |
877 | { | |
878 | case ',': | |
879 | input_line_pointer++; | |
880 | break; | |
881 | ||
882 | default: | |
883 | as_warn (_("badly formed .dim directive ignored")); | |
a5324a3e | 884 | /* Fall through. */ |
252b5132 RH |
885 | case '\n': |
886 | case ';': | |
91d6fa6a | 887 | d_index = DIMNUM; |
252b5132 RH |
888 | break; |
889 | } | |
890 | } | |
891 | ||
892 | demand_empty_rest_of_line (); | |
893 | } | |
894 | ||
895 | static void | |
a5324a3e | 896 | obj_coff_line (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
897 | { |
898 | int this_base; | |
899 | ||
900 | if (def_symbol_in_progress == NULL) | |
901 | { | |
902 | /* Probably stabs-style line? */ | |
903 | obj_coff_ln (0); | |
904 | return; | |
905 | } | |
906 | ||
907 | this_base = get_absolute_expression (); | |
a5324a3e | 908 | if (streq (".bf", S_GET_NAME (def_symbol_in_progress))) |
252b5132 RH |
909 | coff_line_base = this_base; |
910 | ||
911 | S_SET_NUMBER_AUXILIARY (def_symbol_in_progress, 1); | |
23dab925 | 912 | SA_SET_SYM_LNNO (def_symbol_in_progress, this_base); |
252b5132 RH |
913 | |
914 | demand_empty_rest_of_line (); | |
915 | ||
916 | #ifndef NO_LISTING | |
a5324a3e | 917 | if (streq (".bf", S_GET_NAME (def_symbol_in_progress))) |
252b5132 RH |
918 | { |
919 | extern int listing; | |
920 | ||
921 | if (listing) | |
23dab925 | 922 | listing_source_line ((unsigned int) this_base); |
252b5132 RH |
923 | } |
924 | #endif | |
925 | } | |
926 | ||
927 | static void | |
a5324a3e | 928 | obj_coff_size (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
929 | { |
930 | if (def_symbol_in_progress == NULL) | |
931 | { | |
932 | as_warn (_(".size pseudo-op used outside of .def/.endef ignored.")); | |
933 | demand_empty_rest_of_line (); | |
934 | return; | |
a5324a3e | 935 | } |
252b5132 RH |
936 | |
937 | S_SET_NUMBER_AUXILIARY (def_symbol_in_progress, 1); | |
938 | SA_SET_SYM_SIZE (def_symbol_in_progress, get_absolute_expression ()); | |
939 | demand_empty_rest_of_line (); | |
940 | } | |
941 | ||
942 | static void | |
a5324a3e | 943 | obj_coff_scl (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
944 | { |
945 | if (def_symbol_in_progress == NULL) | |
946 | { | |
947 | as_warn (_(".scl pseudo-op used outside of .def/.endef ignored.")); | |
948 | demand_empty_rest_of_line (); | |
949 | return; | |
a5324a3e | 950 | } |
252b5132 RH |
951 | |
952 | S_SET_STORAGE_CLASS (def_symbol_in_progress, get_absolute_expression ()); | |
953 | demand_empty_rest_of_line (); | |
954 | } | |
955 | ||
956 | static void | |
a5324a3e | 957 | obj_coff_tag (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
958 | { |
959 | char *symbol_name; | |
960 | char name_end; | |
961 | ||
962 | if (def_symbol_in_progress == NULL) | |
963 | { | |
964 | as_warn (_(".tag pseudo-op used outside of .def/.endef ignored.")); | |
965 | demand_empty_rest_of_line (); | |
966 | return; | |
967 | } | |
968 | ||
969 | S_SET_NUMBER_AUXILIARY (def_symbol_in_progress, 1); | |
d02603dc | 970 | name_end = get_symbol_name (&symbol_name); |
252b5132 RH |
971 | |
972 | #ifdef tc_canonicalize_symbol_name | |
973 | symbol_name = tc_canonicalize_symbol_name (symbol_name); | |
974 | #endif | |
975 | ||
976 | /* Assume that the symbol referred to by .tag is always defined. | |
dcd619be | 977 | This was a bad assumption. I've added find_or_make. xoxorich. */ |
252b5132 RH |
978 | SA_SET_SYM_TAGNDX (def_symbol_in_progress, |
979 | tag_find_or_make (symbol_name)); | |
980 | if (SA_GET_SYM_TAGNDX (def_symbol_in_progress) == 0L) | |
a5324a3e | 981 | as_warn (_("tag not found for .tag %s"), symbol_name); |
252b5132 RH |
982 | |
983 | SF_SET_TAGGED (def_symbol_in_progress); | |
252b5132 | 984 | |
d02603dc | 985 | (void) restore_line_pointer (name_end); |
252b5132 RH |
986 | demand_empty_rest_of_line (); |
987 | } | |
988 | ||
989 | static void | |
a5324a3e | 990 | obj_coff_type (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
991 | { |
992 | if (def_symbol_in_progress == NULL) | |
993 | { | |
994 | as_warn (_(".type pseudo-op used outside of .def/.endef ignored.")); | |
995 | demand_empty_rest_of_line (); | |
996 | return; | |
a5324a3e | 997 | } |
252b5132 RH |
998 | |
999 | S_SET_DATA_TYPE (def_symbol_in_progress, get_absolute_expression ()); | |
1000 | ||
1001 | if (ISFCN (S_GET_DATA_TYPE (def_symbol_in_progress)) && | |
1002 | S_GET_STORAGE_CLASS (def_symbol_in_progress) != C_TPDEF) | |
a5324a3e | 1003 | SF_SET_FUNCTION (def_symbol_in_progress); |
252b5132 RH |
1004 | |
1005 | demand_empty_rest_of_line (); | |
1006 | } | |
1007 | ||
1008 | static void | |
a5324a3e | 1009 | obj_coff_val (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
1010 | { |
1011 | if (def_symbol_in_progress == NULL) | |
1012 | { | |
1013 | as_warn (_(".val pseudo-op used outside of .def/.endef ignored.")); | |
1014 | demand_empty_rest_of_line (); | |
1015 | return; | |
a5324a3e | 1016 | } |
252b5132 RH |
1017 | |
1018 | if (is_name_beginner (*input_line_pointer)) | |
1019 | { | |
d02603dc NC |
1020 | char *symbol_name; |
1021 | char name_end = get_symbol_name (&symbol_name); | |
252b5132 RH |
1022 | |
1023 | #ifdef tc_canonicalize_symbol_name | |
d02603dc | 1024 | symbol_name = tc_canonicalize_symbol_name (symbol_name); |
252b5132 | 1025 | #endif |
a5324a3e | 1026 | if (streq (symbol_name, ".")) |
252b5132 | 1027 | { |
a5324a3e | 1028 | /* If the .val is != from the .def (e.g. statics). */ |
49309057 | 1029 | symbol_set_frag (def_symbol_in_progress, frag_now); |
252b5132 | 1030 | S_SET_VALUE (def_symbol_in_progress, (valueT) frag_now_fix ()); |
252b5132 | 1031 | } |
a5324a3e | 1032 | else if (! streq (S_GET_NAME (def_symbol_in_progress), symbol_name)) |
252b5132 | 1033 | { |
49309057 ILT |
1034 | expressionS exp; |
1035 | ||
1036 | exp.X_op = O_symbol; | |
1037 | exp.X_add_symbol = symbol_find_or_make (symbol_name); | |
1038 | exp.X_op_symbol = NULL; | |
1039 | exp.X_add_number = 0; | |
1040 | symbol_set_value_expression (def_symbol_in_progress, &exp); | |
252b5132 RH |
1041 | |
1042 | /* If the segment is undefined when the forward reference is | |
1043 | resolved, then copy the segment id from the forward | |
1044 | symbol. */ | |
1045 | SF_SET_GET_SEGMENT (def_symbol_in_progress); | |
0561a208 ILT |
1046 | |
1047 | /* FIXME: gcc can generate address expressions here in | |
1048 | unusual cases (search for "obscure" in sdbout.c). We | |
1049 | just ignore the offset here, thus generating incorrect | |
1050 | debugging information. We ignore the rest of the line | |
1051 | just below. */ | |
252b5132 | 1052 | } |
0561a208 | 1053 | /* Otherwise, it is the name of a non debug symbol and its value |
dcd619be | 1054 | will be calculated later. */ |
d02603dc | 1055 | (void) restore_line_pointer (name_end); |
252b5132 RH |
1056 | } |
1057 | else | |
1058 | { | |
1059 | S_SET_VALUE (def_symbol_in_progress, get_absolute_expression ()); | |
a5324a3e | 1060 | } |
252b5132 RH |
1061 | |
1062 | demand_empty_rest_of_line (); | |
1063 | } | |
1064 | ||
977cdf5a NC |
1065 | #ifdef TE_PE |
1066 | ||
1067 | /* Return nonzero if name begins with weak alternate symbol prefix. */ | |
1068 | ||
1069 | static int | |
1070 | weak_is_altname (const char * name) | |
1071 | { | |
a5324a3e | 1072 | return strneq (name, weak_altprefix, sizeof (weak_altprefix) - 1); |
977cdf5a NC |
1073 | } |
1074 | ||
1075 | /* Return the name of the alternate symbol | |
1076 | name corresponding to a weak symbol's name. */ | |
1077 | ||
1078 | static const char * | |
1079 | weak_name2altname (const char * name) | |
1080 | { | |
29a2809e | 1081 | return concat (weak_altprefix, name, (char *) NULL); |
977cdf5a NC |
1082 | } |
1083 | ||
a5324a3e | 1084 | /* Return the name of the weak symbol corresponding to an |
708587a4 | 1085 | alternate symbol. */ |
977cdf5a NC |
1086 | |
1087 | static const char * | |
1088 | weak_altname2name (const char * name) | |
1089 | { | |
9c2799c2 | 1090 | gas_assert (weak_is_altname (name)); |
b851162a | 1091 | return xstrdup (name + 6); |
977cdf5a NC |
1092 | } |
1093 | ||
1094 | /* Make a weak symbol name unique by | |
1095 | appending the name of an external symbol. */ | |
1096 | ||
1097 | static const char * | |
1098 | weak_uniquify (const char * name) | |
1099 | { | |
977cdf5a NC |
1100 | const char * unique = ""; |
1101 | ||
22ba0981 | 1102 | #ifdef TE_PE |
977cdf5a NC |
1103 | if (an_external_name != NULL) |
1104 | unique = an_external_name; | |
1105 | #endif | |
9c2799c2 | 1106 | gas_assert (weak_is_altname (name)); |
977cdf5a | 1107 | |
29a2809e | 1108 | return concat (name, ".", unique, (char *) NULL); |
977cdf5a NC |
1109 | } |
1110 | ||
06e77878 AO |
1111 | void |
1112 | pecoff_obj_set_weak_hook (symbolS *symbolP) | |
1113 | { | |
1114 | symbolS *alternateP; | |
1115 | ||
1116 | /* See _Microsoft Portable Executable and Common Object | |
1117 | File Format Specification_, section 5.5.3. | |
1118 | Create a symbol representing the alternate value. | |
1119 | coff_frob_symbol will set the value of this symbol from | |
1120 | the value of the weak symbol itself. */ | |
1121 | S_SET_STORAGE_CLASS (symbolP, C_NT_WEAK); | |
1122 | S_SET_NUMBER_AUXILIARY (symbolP, 1); | |
1123 | SA_SET_SYM_FSIZE (symbolP, IMAGE_WEAK_EXTERN_SEARCH_NOLIBRARY); | |
1124 | ||
1125 | alternateP = symbol_find_or_make (weak_name2altname (S_GET_NAME (symbolP))); | |
1126 | S_SET_EXTERNAL (alternateP); | |
1127 | S_SET_STORAGE_CLASS (alternateP, C_NT_WEAK); | |
1128 | ||
1129 | SA_SET_SYM_TAGNDX (symbolP, alternateP); | |
1130 | } | |
1131 | ||
1132 | void | |
1133 | pecoff_obj_clear_weak_hook (symbolS *symbolP) | |
1134 | { | |
1135 | symbolS *alternateP; | |
1136 | ||
1137 | S_SET_STORAGE_CLASS (symbolP, 0); | |
1138 | SA_SET_SYM_FSIZE (symbolP, 0); | |
1139 | ||
1140 | alternateP = symbol_find (weak_name2altname (S_GET_NAME (symbolP))); | |
1141 | S_CLEAR_EXTERNAL (alternateP); | |
1142 | } | |
1143 | ||
977cdf5a NC |
1144 | #endif /* TE_PE */ |
1145 | ||
c87db184 | 1146 | /* Handle .weak. This is a GNU extension in formats other than PE. */ |
977cdf5a | 1147 | |
c87db184 | 1148 | static void |
977cdf5a | 1149 | obj_coff_weak (int ignore ATTRIBUTE_UNUSED) |
c87db184 CF |
1150 | { |
1151 | char *name; | |
1152 | int c; | |
1153 | symbolS *symbolP; | |
1154 | ||
1155 | do | |
1156 | { | |
d02603dc | 1157 | c = get_symbol_name (&name); |
c87db184 CF |
1158 | if (*name == 0) |
1159 | { | |
1160 | as_warn (_("badly formed .weak directive ignored")); | |
1161 | ignore_rest_of_line (); | |
1162 | return; | |
1163 | } | |
977cdf5a | 1164 | c = 0; |
c87db184 CF |
1165 | symbolP = symbol_find_or_make (name); |
1166 | *input_line_pointer = c; | |
d02603dc | 1167 | SKIP_WHITESPACE_AFTER_NAME (); |
c87db184 | 1168 | S_SET_WEAK (symbolP); |
c87db184 | 1169 | |
c87db184 CF |
1170 | if (c == ',') |
1171 | { | |
1172 | input_line_pointer++; | |
1173 | SKIP_WHITESPACE (); | |
1174 | if (*input_line_pointer == '\n') | |
1175 | c = '\n'; | |
1176 | } | |
1177 | ||
1178 | } | |
1179 | while (c == ','); | |
1180 | ||
1181 | demand_empty_rest_of_line (); | |
1182 | } | |
1183 | ||
252b5132 | 1184 | void |
a5324a3e | 1185 | coff_obj_read_begin_hook (void) |
252b5132 | 1186 | { |
dcd619be | 1187 | /* These had better be the same. Usually 18 bytes. */ |
252b5132 RH |
1188 | know (sizeof (SYMENT) == sizeof (AUXENT)); |
1189 | know (SYMESZ == AUXESZ); | |
252b5132 RH |
1190 | tag_init (); |
1191 | } | |
1192 | ||
252b5132 | 1193 | symbolS *coff_last_function; |
17fc154e | 1194 | #ifndef OBJ_XCOFF |
252b5132 | 1195 | static symbolS *coff_last_bf; |
17fc154e | 1196 | #endif |
252b5132 RH |
1197 | |
1198 | void | |
a5324a3e | 1199 | coff_frob_symbol (symbolS *symp, int *punt) |
252b5132 RH |
1200 | { |
1201 | static symbolS *last_tagP; | |
1202 | static stack *block_stack; | |
1203 | static symbolS *set_end; | |
1204 | symbolS *next_set_end = NULL; | |
1205 | ||
1206 | if (symp == &abs_symbol) | |
1207 | { | |
1208 | *punt = 1; | |
1209 | return; | |
1210 | } | |
1211 | ||
1212 | if (current_lineno_sym) | |
a5324a3e | 1213 | coff_add_linesym (NULL); |
252b5132 RH |
1214 | |
1215 | if (!block_stack) | |
1216 | block_stack = stack_init (512, sizeof (symbolS*)); | |
1217 | ||
252b5132 | 1218 | #ifdef TE_PE |
977cdf5a NC |
1219 | if (S_GET_STORAGE_CLASS (symp) == C_NT_WEAK |
1220 | && ! S_IS_WEAK (symp) | |
1221 | && weak_is_altname (S_GET_NAME (symp))) | |
1222 | { | |
1223 | /* This is a weak alternate symbol. All processing of | |
1224 | PECOFFweak symbols is done here, through the alternate. */ | |
06e77878 AO |
1225 | symbolS *weakp = symbol_find_noref (weak_altname2name |
1226 | (S_GET_NAME (symp)), 1); | |
977cdf5a | 1227 | |
9c2799c2 NC |
1228 | gas_assert (weakp); |
1229 | gas_assert (S_GET_NUMBER_AUXILIARY (weakp) == 1); | |
977cdf5a | 1230 | |
06e77878 AO |
1231 | if (! S_IS_WEAK (weakp)) |
1232 | { | |
1233 | /* The symbol was turned from weak to strong. Discard altname. */ | |
1234 | *punt = 1; | |
1235 | return; | |
1236 | } | |
1237 | else if (symbol_equated_p (weakp)) | |
977cdf5a NC |
1238 | { |
1239 | /* The weak symbol has an alternate specified; symp is unneeded. */ | |
1240 | S_SET_STORAGE_CLASS (weakp, C_NT_WEAK); | |
1241 | SA_SET_SYM_TAGNDX (weakp, | |
1242 | symbol_get_value_expression (weakp)->X_add_symbol); | |
1243 | ||
1244 | S_CLEAR_EXTERNAL (symp); | |
1245 | *punt = 1; | |
1246 | return; | |
1247 | } | |
1248 | else | |
1249 | { | |
1250 | /* The weak symbol has been assigned an alternate value. | |
1251 | Copy this value to symp, and set symp as weakp's alternate. */ | |
1252 | if (S_GET_STORAGE_CLASS (weakp) != C_NT_WEAK) | |
1253 | { | |
1254 | S_SET_STORAGE_CLASS (symp, S_GET_STORAGE_CLASS (weakp)); | |
1255 | S_SET_STORAGE_CLASS (weakp, C_NT_WEAK); | |
1256 | } | |
1257 | ||
1258 | if (S_IS_DEFINED (weakp)) | |
1259 | { | |
1260 | /* This is a defined weak symbol. Copy value information | |
1261 | from the weak symbol itself to the alternate symbol. */ | |
1262 | symbol_set_value_expression (symp, | |
1263 | symbol_get_value_expression (weakp)); | |
1264 | symbol_set_frag (symp, symbol_get_frag (weakp)); | |
1265 | S_SET_SEGMENT (symp, S_GET_SEGMENT (weakp)); | |
1266 | } | |
1267 | else | |
1268 | { | |
1269 | /* This is an undefined weak symbol. | |
1270 | Define the alternate symbol to zero. */ | |
1271 | S_SET_VALUE (symp, 0); | |
1272 | S_SET_SEGMENT (symp, absolute_section); | |
1273 | } | |
1274 | ||
1275 | S_SET_NAME (symp, weak_uniquify (S_GET_NAME (symp))); | |
1276 | S_SET_STORAGE_CLASS (symp, C_EXT); | |
1277 | ||
1278 | S_SET_VALUE (weakp, 0); | |
1279 | S_SET_SEGMENT (weakp, undefined_section); | |
1280 | } | |
252b5132 | 1281 | } |
977cdf5a NC |
1282 | #else /* TE_PE */ |
1283 | if (S_IS_WEAK (symp)) | |
1284 | S_SET_STORAGE_CLASS (symp, C_WEAKEXT); | |
1285 | #endif /* TE_PE */ | |
252b5132 RH |
1286 | |
1287 | if (!S_IS_DEFINED (symp) | |
1288 | && !S_IS_WEAK (symp) | |
1289 | && S_GET_STORAGE_CLASS (symp) != C_STAT) | |
1290 | S_SET_STORAGE_CLASS (symp, C_EXT); | |
1291 | ||
1292 | if (!SF_GET_DEBUG (symp)) | |
1293 | { | |
bdbe95c8 NC |
1294 | symbolS * real; |
1295 | ||
252b5132 RH |
1296 | if (!SF_GET_LOCAL (symp) |
1297 | && !SF_GET_STATICS (symp) | |
39da8128 | 1298 | && S_GET_STORAGE_CLASS (symp) != C_LABEL |
a5324a3e | 1299 | && symbol_constant_p (symp) |
06e77878 | 1300 | && (real = symbol_find_noref (S_GET_NAME (symp), 1)) |
bdbe95c8 | 1301 | && S_GET_STORAGE_CLASS (real) == C_NULL |
252b5132 RH |
1302 | && real != symp) |
1303 | { | |
1304 | c_symbol_merge (symp, real); | |
1305 | *punt = 1; | |
39da8128 | 1306 | return; |
252b5132 | 1307 | } |
bdbe95c8 | 1308 | |
5e0d736c | 1309 | if (!S_IS_DEFINED (symp) && !SF_GET_LOCAL (symp)) |
252b5132 | 1310 | { |
9c2799c2 | 1311 | gas_assert (S_GET_VALUE (symp) == 0); |
06e77878 AO |
1312 | if (S_IS_WEAKREFD (symp)) |
1313 | *punt = 1; | |
1314 | else | |
1315 | S_SET_EXTERNAL (symp); | |
5e0d736c DD |
1316 | } |
1317 | else if (S_GET_STORAGE_CLASS (symp) == C_NULL) | |
1318 | { | |
1319 | if (S_GET_SEGMENT (symp) == text_section | |
1320 | && symp != seg_info (text_section)->sym) | |
1321 | S_SET_STORAGE_CLASS (symp, C_LABEL); | |
252b5132 | 1322 | else |
5e0d736c | 1323 | S_SET_STORAGE_CLASS (symp, C_STAT); |
252b5132 | 1324 | } |
bdbe95c8 | 1325 | |
252b5132 RH |
1326 | if (SF_GET_PROCESS (symp)) |
1327 | { | |
1328 | if (S_GET_STORAGE_CLASS (symp) == C_BLOCK) | |
1329 | { | |
a5324a3e | 1330 | if (streq (S_GET_NAME (symp), ".bb")) |
252b5132 RH |
1331 | stack_push (block_stack, (char *) &symp); |
1332 | else | |
1333 | { | |
1334 | symbolS *begin; | |
bdbe95c8 | 1335 | |
252b5132 RH |
1336 | begin = *(symbolS **) stack_pop (block_stack); |
1337 | if (begin == 0) | |
1338 | as_warn (_("mismatched .eb")); | |
1339 | else | |
1340 | next_set_end = begin; | |
1341 | } | |
1342 | } | |
bdbe95c8 | 1343 | |
c207c2c6 KT |
1344 | if (coff_last_function == 0 && SF_GET_FUNCTION (symp) |
1345 | && S_IS_DEFINED (symp)) | |
252b5132 RH |
1346 | { |
1347 | union internal_auxent *auxp; | |
bdbe95c8 | 1348 | |
252b5132 RH |
1349 | coff_last_function = symp; |
1350 | if (S_GET_NUMBER_AUXILIARY (symp) < 1) | |
1351 | S_SET_NUMBER_AUXILIARY (symp, 1); | |
0561a208 | 1352 | auxp = SYM_AUXENT (symp); |
252b5132 RH |
1353 | memset (auxp->x_sym.x_fcnary.x_ary.x_dimen, 0, |
1354 | sizeof (auxp->x_sym.x_fcnary.x_ary.x_dimen)); | |
1355 | } | |
bdbe95c8 | 1356 | |
c207c2c6 KT |
1357 | if (S_GET_STORAGE_CLASS (symp) == C_EFCN |
1358 | && S_IS_DEFINED (symp)) | |
252b5132 RH |
1359 | { |
1360 | if (coff_last_function == 0) | |
161840f9 ILT |
1361 | as_fatal (_("C_EFCN symbol for %s out of scope"), |
1362 | S_GET_NAME (symp)); | |
252b5132 RH |
1363 | SA_SET_SYM_FSIZE (coff_last_function, |
1364 | (long) (S_GET_VALUE (symp) | |
1365 | - S_GET_VALUE (coff_last_function))); | |
1366 | next_set_end = coff_last_function; | |
1367 | coff_last_function = 0; | |
1368 | } | |
1369 | } | |
bdbe95c8 | 1370 | |
252b5132 RH |
1371 | if (S_IS_EXTERNAL (symp)) |
1372 | S_SET_STORAGE_CLASS (symp, C_EXT); | |
1373 | else if (SF_GET_LOCAL (symp)) | |
1374 | *punt = 1; | |
1375 | ||
1376 | if (SF_GET_FUNCTION (symp)) | |
49309057 | 1377 | symbol_get_bfdsym (symp)->flags |= BSF_FUNCTION; |
252b5132 RH |
1378 | } |
1379 | ||
8828d862 ILT |
1380 | /* Double check weak symbols. */ |
1381 | if (S_IS_WEAK (symp) && S_IS_COMMON (symp)) | |
1382 | as_bad (_("Symbol `%s' can not be both weak and common"), | |
1383 | S_GET_NAME (symp)); | |
1384 | ||
252b5132 RH |
1385 | if (SF_GET_TAG (symp)) |
1386 | last_tagP = symp; | |
1387 | else if (S_GET_STORAGE_CLASS (symp) == C_EOS) | |
1388 | next_set_end = last_tagP; | |
1389 | ||
1390 | #ifdef OBJ_XCOFF | |
1391 | /* This is pretty horrible, but we have to set *punt correctly in | |
1392 | order to call SA_SET_SYM_ENDNDX correctly. */ | |
809ffe0d | 1393 | if (! symbol_used_in_reloc_p (symp) |
49309057 | 1394 | && ((symbol_get_bfdsym (symp)->flags & BSF_SECTION_SYM) != 0 |
670ec21d | 1395 | || (! (S_IS_EXTERNAL (symp) || S_IS_WEAK (symp)) |
809ffe0d | 1396 | && ! symbol_get_tc (symp)->output |
252b5132 RH |
1397 | && S_GET_STORAGE_CLASS (symp) != C_FILE))) |
1398 | *punt = 1; | |
1399 | #endif | |
1400 | ||
1401 | if (set_end != (symbolS *) NULL | |
1402 | && ! *punt | |
49309057 | 1403 | && ((symbol_get_bfdsym (symp)->flags & BSF_NOT_AT_END) != 0 |
252b5132 RH |
1404 | || (S_IS_DEFINED (symp) |
1405 | && ! S_IS_COMMON (symp) | |
1406 | && (! S_IS_EXTERNAL (symp) || SF_GET_FUNCTION (symp))))) | |
1407 | { | |
1408 | SA_SET_SYM_ENDNDX (set_end, symp); | |
1409 | set_end = NULL; | |
1410 | } | |
1411 | ||
a04b544b ILT |
1412 | if (next_set_end != NULL) |
1413 | { | |
1414 | if (set_end != NULL) | |
20203fb9 | 1415 | as_warn (_("Warning: internal error: forgetting to set endndx of %s"), |
a04b544b ILT |
1416 | S_GET_NAME (set_end)); |
1417 | set_end = next_set_end; | |
1418 | } | |
252b5132 | 1419 | |
8642cce8 | 1420 | #ifndef OBJ_XCOFF |
252b5132 RH |
1421 | if (! *punt |
1422 | && S_GET_STORAGE_CLASS (symp) == C_FCN | |
a5324a3e | 1423 | && streq (S_GET_NAME (symp), ".bf")) |
252b5132 RH |
1424 | { |
1425 | if (coff_last_bf != NULL) | |
1426 | SA_SET_SYM_ENDNDX (coff_last_bf, symp); | |
1427 | coff_last_bf = symp; | |
1428 | } | |
8642cce8 | 1429 | #endif |
49309057 | 1430 | if (coffsymbol (symbol_get_bfdsym (symp))->lineno) |
252b5132 RH |
1431 | { |
1432 | int i; | |
1433 | struct line_no *lptr; | |
1434 | alent *l; | |
1435 | ||
49309057 | 1436 | lptr = (struct line_no *) coffsymbol (symbol_get_bfdsym (symp))->lineno; |
252b5132 RH |
1437 | for (i = 0; lptr; lptr = lptr->next) |
1438 | i++; | |
49309057 | 1439 | lptr = (struct line_no *) coffsymbol (symbol_get_bfdsym (symp))->lineno; |
252b5132 RH |
1440 | |
1441 | /* We need i entries for line numbers, plus 1 for the first | |
1442 | entry which BFD will override, plus 1 for the last zero | |
1443 | entry (a marker for BFD). */ | |
add39d23 | 1444 | l = XNEWVEC (alent, (i + 2)); |
49309057 | 1445 | coffsymbol (symbol_get_bfdsym (symp))->lineno = l; |
252b5132 RH |
1446 | l[i + 1].line_number = 0; |
1447 | l[i + 1].u.sym = NULL; | |
1448 | for (; i > 0; i--) | |
1449 | { | |
1450 | if (lptr->frag) | |
bea9907b | 1451 | lptr->l.u.offset += lptr->frag->fr_address / OCTETS_PER_BYTE; |
252b5132 RH |
1452 | l[i] = lptr->l; |
1453 | lptr = lptr->next; | |
1454 | } | |
1455 | } | |
1456 | } | |
1457 | ||
1458 | void | |
a5324a3e NC |
1459 | coff_adjust_section_syms (bfd *abfd ATTRIBUTE_UNUSED, |
1460 | asection *sec, | |
1461 | void * x ATTRIBUTE_UNUSED) | |
252b5132 RH |
1462 | { |
1463 | symbolS *secsym; | |
1464 | segment_info_type *seginfo = seg_info (sec); | |
1465 | int nlnno, nrelocs = 0; | |
1466 | ||
1467 | /* RS/6000 gas creates a .debug section manually in ppc_frob_file in | |
1468 | tc-ppc.c. Do not get confused by it. */ | |
1469 | if (seginfo == NULL) | |
1470 | return; | |
1471 | ||
a5324a3e | 1472 | if (streq (sec->name, ".text")) |
252b5132 RH |
1473 | nlnno = coff_n_line_nos; |
1474 | else | |
1475 | nlnno = 0; | |
1476 | { | |
1477 | /* @@ Hope that none of the fixups expand to more than one reloc | |
1478 | entry... */ | |
1479 | fixS *fixp = seginfo->fix_root; | |
1480 | while (fixp) | |
1481 | { | |
1482 | if (! fixp->fx_done) | |
1483 | nrelocs++; | |
1484 | fixp = fixp->fx_next; | |
1485 | } | |
1486 | } | |
587aac4e | 1487 | if (bfd_get_section_size (sec) == 0 |
252b5132 RH |
1488 | && nrelocs == 0 |
1489 | && nlnno == 0 | |
1490 | && sec != text_section | |
1491 | && sec != data_section | |
1492 | && sec != bss_section) | |
1493 | return; | |
a5324a3e | 1494 | |
252b5132 | 1495 | secsym = section_symbol (sec); |
945a1a6b ILT |
1496 | /* This is an estimate; we'll plug in the real value using |
1497 | SET_SECTION_RELOCS later */ | |
252b5132 RH |
1498 | SA_SET_SCN_NRELOC (secsym, nrelocs); |
1499 | SA_SET_SCN_NLINNO (secsym, nlnno); | |
1500 | } | |
1501 | ||
1502 | void | |
a5324a3e | 1503 | coff_frob_file_after_relocs (void) |
252b5132 | 1504 | { |
a5324a3e | 1505 | bfd_map_over_sections (stdoutput, coff_adjust_section_syms, NULL); |
252b5132 RH |
1506 | } |
1507 | ||
6ff96af6 NC |
1508 | /* Implement the .section pseudo op: |
1509 | .section name {, "flags"} | |
1510 | ^ ^ | |
1511 | | +--- optional flags: 'b' for bss | |
1512 | | 'i' for info | |
1513 | +-- section name 'l' for lib | |
1514 | 'n' for noload | |
1515 | 'o' for over | |
1516 | 'w' for data | |
1517 | 'd' (apparently m88k for data) | |
c3489828 | 1518 | 'e' for exclude |
6ff96af6 NC |
1519 | 'x' for text |
1520 | 'r' for read-only data | |
1521 | 's' for shared data (PE) | |
63ad59ae | 1522 | 'y' for noread |
31907d5e | 1523 | '0' - '9' for power-of-two alignment (GNU extension). |
6ff96af6 NC |
1524 | But if the argument is not a quoted string, treat it as a |
1525 | subsegment number. | |
1526 | ||
1527 | Note the 'a' flag is silently ignored. This allows the same | |
1528 | .section directive to be parsed in both ELF and COFF formats. */ | |
252b5132 RH |
1529 | |
1530 | void | |
a5324a3e | 1531 | obj_coff_section (int ignore ATTRIBUTE_UNUSED) |
252b5132 | 1532 | { |
a5324a3e | 1533 | /* Strip out the section name. */ |
252b5132 RH |
1534 | char *section_name; |
1535 | char c; | |
31907d5e | 1536 | int alignment = -1; |
252b5132 RH |
1537 | char *name; |
1538 | unsigned int exp; | |
c9900432 | 1539 | flagword flags, oldflags; |
252b5132 RH |
1540 | asection *sec; |
1541 | ||
1542 | if (flag_mri) | |
1543 | { | |
1544 | char type; | |
1545 | ||
1546 | s_mri_sect (&type); | |
1547 | return; | |
1548 | } | |
1549 | ||
d02603dc | 1550 | c = get_symbol_name (§ion_name); |
29a2809e | 1551 | name = xmemdup0 (section_name, input_line_pointer - section_name); |
252b5132 | 1552 | *input_line_pointer = c; |
d02603dc | 1553 | SKIP_WHITESPACE_AFTER_NAME (); |
252b5132 RH |
1554 | |
1555 | exp = 0; | |
c9900432 | 1556 | flags = SEC_NO_FLAGS; |
252b5132 RH |
1557 | |
1558 | if (*input_line_pointer == ',') | |
1559 | { | |
1560 | ++input_line_pointer; | |
1561 | SKIP_WHITESPACE (); | |
1562 | if (*input_line_pointer != '"') | |
1563 | exp = get_absolute_expression (); | |
1564 | else | |
1565 | { | |
422fee64 NC |
1566 | unsigned char attr; |
1567 | int readonly_removed = 0; | |
1568 | int load_removed = 0; | |
1569 | ||
1570 | while (attr = *++input_line_pointer, | |
1571 | attr != '"' | |
1572 | && ! is_end_of_line[attr]) | |
252b5132 | 1573 | { |
31907d5e DK |
1574 | if (ISDIGIT (attr)) |
1575 | { | |
1576 | alignment = attr - '0'; | |
1577 | continue; | |
1578 | } | |
422fee64 | 1579 | switch (attr) |
252b5132 | 1580 | { |
c3489828 KT |
1581 | case 'e': |
1582 | /* Exclude section from linking. */ | |
1583 | flags |= SEC_EXCLUDE; | |
1584 | break; | |
1585 | ||
422fee64 NC |
1586 | case 'b': |
1587 | /* Uninitialised data section. */ | |
1588 | flags |= SEC_ALLOC; | |
1589 | flags &=~ SEC_LOAD; | |
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 | |
31907d5e DK |
1661 | if (alignment >= 0) |
1662 | sec->alignment_power = alignment; | |
252b5132 | 1663 | |
c9900432 NC |
1664 | oldflags = bfd_get_section_flags (stdoutput, sec); |
1665 | if (oldflags == SEC_NO_FLAGS) | |
252b5132 | 1666 | { |
c9900432 NC |
1667 | /* Set section flags for a new section just created by subseg_new. |
1668 | Provide a default if no flags were parsed. */ | |
1669 | if (flags == SEC_NO_FLAGS) | |
1ad5eac0 | 1670 | flags = TC_COFF_SECTION_DEFAULT_ATTRIBUTES; |
dcd619be | 1671 | |
c9900432 NC |
1672 | #ifdef COFF_LONG_SECTION_NAMES |
1673 | /* Add SEC_LINK_ONCE and SEC_LINK_DUPLICATES_DISCARD to .gnu.linkonce | |
1674 | sections so adjust_reloc_syms in write.c will correctly handle | |
1675 | relocs which refer to non-local symbols in these sections. */ | |
a5324a3e | 1676 | if (strneq (name, ".gnu.linkonce", sizeof (".gnu.linkonce") - 1)) |
cc8a6dd0 | 1677 | flags |= SEC_LINK_ONCE | SEC_LINK_DUPLICATES_DISCARD; |
c9900432 | 1678 | #endif |
252b5132 RH |
1679 | |
1680 | if (! bfd_set_section_flags (stdoutput, sec, flags)) | |
cc8a6dd0 KH |
1681 | as_warn (_("error setting flags for \"%s\": %s"), |
1682 | bfd_section_name (stdoutput, sec), | |
1683 | bfd_errmsg (bfd_get_error ())); | |
c9900432 NC |
1684 | } |
1685 | else if (flags != SEC_NO_FLAGS) | |
1686 | { | |
a5324a3e | 1687 | /* This section's attributes have already been set. Warn if the |
c9900432 | 1688 | attributes don't match. */ |
5dd0794d | 1689 | flagword matchflags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_CODE |
63ad59ae KT |
1690 | | SEC_DATA | SEC_COFF_SHARED | SEC_NEVER_LOAD |
1691 | | SEC_COFF_NOREAD); | |
c9900432 NC |
1692 | if ((flags ^ oldflags) & matchflags) |
1693 | as_warn (_("Ignoring changed section attributes for %s"), name); | |
252b5132 RH |
1694 | } |
1695 | ||
1696 | demand_empty_rest_of_line (); | |
1697 | } | |
1698 | ||
1699 | void | |
a5324a3e | 1700 | coff_adjust_symtab (void) |
252b5132 RH |
1701 | { |
1702 | if (symbol_rootP == NULL | |
1703 | || S_GET_STORAGE_CLASS (symbol_rootP) != C_FILE) | |
a4528eeb | 1704 | c_dot_file_symbol ("fake", 0); |
252b5132 RH |
1705 | } |
1706 | ||
1707 | void | |
a5324a3e | 1708 | coff_frob_section (segT sec) |
252b5132 RH |
1709 | { |
1710 | segT strsec; | |
1711 | char *p; | |
1712 | fragS *fragp; | |
87975d2a | 1713 | bfd_vma n_entries; |
252b5132 RH |
1714 | |
1715 | /* The COFF back end in BFD requires that all section sizes be | |
bea9907b TW |
1716 | rounded up to multiples of the corresponding section alignments, |
1717 | supposedly because standard COFF has no other way of encoding alignment | |
1718 | for sections. If your COFF flavor has a different way of encoding | |
dcd619be | 1719 | section alignment, then skip this step, as TICOFF does. */ |
87975d2a | 1720 | bfd_vma size = bfd_get_section_size (sec); |
bea9907b | 1721 | #if !defined(TICOFF) |
87975d2a AM |
1722 | bfd_vma align_power = (bfd_vma) sec->alignment_power + OCTETS_PER_BYTE_POWER; |
1723 | bfd_vma mask = ((bfd_vma) 1 << align_power) - 1; | |
1724 | ||
252b5132 RH |
1725 | if (size & mask) |
1726 | { | |
7f788821 NC |
1727 | bfd_vma new_size; |
1728 | fragS *last; | |
dcd619be | 1729 | |
7f788821 NC |
1730 | new_size = (size + mask) & ~mask; |
1731 | bfd_set_section_size (stdoutput, sec, new_size); | |
1732 | ||
1733 | /* If the size had to be rounded up, add some padding in | |
1734 | the last non-empty frag. */ | |
1735 | fragp = seg_info (sec)->frchainP->frch_root; | |
1736 | last = seg_info (sec)->frchainP->frch_last; | |
1737 | while (fragp->fr_next != last) | |
cc8a6dd0 | 1738 | fragp = fragp->fr_next; |
7f788821 NC |
1739 | last->fr_address = size; |
1740 | fragp->fr_offset += new_size - size; | |
252b5132 | 1741 | } |
bea9907b | 1742 | #endif |
252b5132 RH |
1743 | |
1744 | /* If the section size is non-zero, the section symbol needs an aux | |
1745 | entry associated with it, indicating the size. We don't know | |
1746 | all the values yet; coff_frob_symbol will fill them in later. */ | |
bea9907b | 1747 | #ifndef TICOFF |
252b5132 RH |
1748 | if (size != 0 |
1749 | || sec == text_section | |
1750 | || sec == data_section | |
1751 | || sec == bss_section) | |
bea9907b | 1752 | #endif |
252b5132 RH |
1753 | { |
1754 | symbolS *secsym = section_symbol (sec); | |
85645aed | 1755 | unsigned char sclass = C_STAT; |
252b5132 | 1756 | |
85645aed TG |
1757 | #ifdef OBJ_XCOFF |
1758 | if (bfd_get_section_flags (stdoutput, sec) & SEC_DEBUGGING) | |
1759 | sclass = C_DWARF; | |
1760 | #endif | |
1761 | S_SET_STORAGE_CLASS (secsym, sclass); | |
252b5132 RH |
1762 | S_SET_NUMBER_AUXILIARY (secsym, 1); |
1763 | SF_SET_STATICS (secsym); | |
1764 | SA_SET_SCN_SCNLEN (secsym, size); | |
1765 | } | |
a5324a3e | 1766 | /* FIXME: These should be in a "stabs.h" file, or maybe as.h. */ |
252b5132 RH |
1767 | #ifndef STAB_SECTION_NAME |
1768 | #define STAB_SECTION_NAME ".stab" | |
1769 | #endif | |
1770 | #ifndef STAB_STRING_SECTION_NAME | |
1771 | #define STAB_STRING_SECTION_NAME ".stabstr" | |
1772 | #endif | |
a5324a3e | 1773 | if (! streq (STAB_STRING_SECTION_NAME, sec->name)) |
252b5132 RH |
1774 | return; |
1775 | ||
1776 | strsec = sec; | |
1777 | sec = subseg_get (STAB_SECTION_NAME, 0); | |
1778 | /* size is already rounded up, since other section will be listed first */ | |
587aac4e | 1779 | size = bfd_get_section_size (strsec); |
252b5132 | 1780 | |
587aac4e | 1781 | n_entries = bfd_get_section_size (sec) / 12 - 1; |
252b5132 RH |
1782 | |
1783 | /* Find first non-empty frag. It should be large enough. */ | |
1784 | fragp = seg_info (sec)->frchainP->frch_root; | |
1785 | while (fragp && fragp->fr_fix == 0) | |
1786 | fragp = fragp->fr_next; | |
9c2799c2 | 1787 | gas_assert (fragp != 0 && fragp->fr_fix >= 12); |
252b5132 RH |
1788 | |
1789 | /* Store the values. */ | |
1790 | p = fragp->fr_literal; | |
1791 | bfd_h_put_16 (stdoutput, n_entries, (bfd_byte *) p + 6); | |
1792 | bfd_h_put_32 (stdoutput, size, (bfd_byte *) p + 8); | |
1793 | } | |
1794 | ||
1795 | void | |
a5324a3e | 1796 | obj_coff_init_stab_section (segT seg) |
252b5132 | 1797 | { |
3b4dbbbf | 1798 | const char *file; |
252b5132 RH |
1799 | char *p; |
1800 | char *stabstr_name; | |
1801 | unsigned int stroff; | |
1802 | ||
dcd619be | 1803 | /* Make space for this first symbol. */ |
252b5132 | 1804 | p = frag_more (12); |
dcd619be | 1805 | /* Zero it out. */ |
252b5132 | 1806 | memset (p, 0, 12); |
3b4dbbbf | 1807 | file = as_where ((unsigned int *) NULL); |
29a2809e | 1808 | stabstr_name = concat (seg->name, "str", (char *) NULL); |
252b5132 RH |
1809 | stroff = get_stab_string_offset (file, stabstr_name); |
1810 | know (stroff == 1); | |
1811 | md_number_to_chars (p, stroff, 4); | |
1812 | } | |
1813 | ||
1814 | #ifdef DEBUG | |
9ccb8af9 AM |
1815 | const char * s_get_name (symbolS *); |
1816 | ||
252b5132 | 1817 | const char * |
a5324a3e | 1818 | s_get_name (symbolS *s) |
252b5132 RH |
1819 | { |
1820 | return ((s == NULL) ? "(NULL)" : S_GET_NAME (s)); | |
1821 | } | |
1822 | ||
9ccb8af9 AM |
1823 | void symbol_dump (void); |
1824 | ||
252b5132 | 1825 | void |
a5324a3e | 1826 | symbol_dump (void) |
252b5132 RH |
1827 | { |
1828 | symbolS *symbolP; | |
1829 | ||
1830 | for (symbolP = symbol_rootP; symbolP; symbolP = symbol_next (symbolP)) | |
a5324a3e NC |
1831 | printf (_("0x%lx: \"%s\" type = %ld, class = %d, segment = %d\n"), |
1832 | (unsigned long) symbolP, | |
1833 | S_GET_NAME (symbolP), | |
1834 | (long) S_GET_DATA_TYPE (symbolP), | |
1835 | S_GET_STORAGE_CLASS (symbolP), | |
1836 | (int) S_GET_SEGMENT (symbolP)); | |
252b5132 RH |
1837 | } |
1838 | ||
1839 | #endif /* DEBUG */ | |
1840 | ||
7be1c489 | 1841 | const pseudo_typeS coff_pseudo_table[] = |
252b5132 | 1842 | { |
7be1c489 AM |
1843 | {"ABORT", s_abort, 0}, |
1844 | {"appline", obj_coff_ln, 1}, | |
1845 | /* We accept the .bss directive for backward compatibility with | |
1846 | earlier versions of gas. */ | |
1847 | {"bss", obj_coff_bss, 0}, | |
c1711530 DK |
1848 | #ifdef TE_PE |
1849 | /* PE provides an enhanced version of .comm with alignment. */ | |
1850 | {"comm", obj_coff_comm, 0}, | |
1851 | #endif /* TE_PE */ | |
7be1c489 AM |
1852 | {"def", obj_coff_def, 0}, |
1853 | {"dim", obj_coff_dim, 0}, | |
1854 | {"endef", obj_coff_endef, 0}, | |
1855 | {"ident", obj_coff_ident, 0}, | |
1856 | {"line", obj_coff_line, 0}, | |
1857 | {"ln", obj_coff_ln, 0}, | |
1858 | {"scl", obj_coff_scl, 0}, | |
1859 | {"sect", obj_coff_section, 0}, | |
1860 | {"sect.s", obj_coff_section, 0}, | |
1861 | {"section", obj_coff_section, 0}, | |
1862 | {"section.s", obj_coff_section, 0}, | |
1863 | /* FIXME: We ignore the MRI short attribute. */ | |
1864 | {"size", obj_coff_size, 0}, | |
1865 | {"tag", obj_coff_tag, 0}, | |
1866 | {"type", obj_coff_type, 0}, | |
1867 | {"val", obj_coff_val, 0}, | |
1868 | {"version", s_ignore, 0}, | |
1869 | {"loc", obj_coff_loc, 0}, | |
1870 | {"optim", s_ignore, 0}, /* For sun386i cc (?) */ | |
1871 | {"weak", obj_coff_weak, 0}, | |
1872 | #if defined TC_TIC4X | |
1873 | /* The tic4x uses sdef instead of def. */ | |
1874 | {"sdef", obj_coff_def, 0}, | |
f3d2b04b KT |
1875 | #endif |
1876 | #if defined(SEH_CMDS) | |
1877 | SEH_CMDS | |
252b5132 | 1878 | #endif |
7be1c489 AM |
1879 | {NULL, NULL, 0} |
1880 | }; | |
1881 | \f | |
252b5132 | 1882 | |
7be1c489 | 1883 | /* Support for a COFF emulation. */ |
252b5132 RH |
1884 | |
1885 | static void | |
7be1c489 | 1886 | coff_pop_insert (void) |
252b5132 | 1887 | { |
7be1c489 | 1888 | pop_insert (coff_pseudo_table); |
252b5132 RH |
1889 | } |
1890 | ||
a5324a3e | 1891 | static int |
7be1c489 | 1892 | coff_separate_stab_sections (void) |
a5324a3e | 1893 | { |
7be1c489 | 1894 | return 1; |
a5324a3e NC |
1895 | } |
1896 | ||
7be1c489 | 1897 | const struct format_ops coff_format_ops = |
252b5132 RH |
1898 | { |
1899 | bfd_target_coff_flavour, | |
4c63da97 AM |
1900 | 0, /* dfl_leading_underscore */ |
1901 | 1, /* emit_section_symbols */ | |
5110c57e HPN |
1902 | 0, /* begin */ |
1903 | c_dot_file_symbol, | |
252b5132 | 1904 | coff_frob_symbol, |
4c63da97 | 1905 | 0, /* frob_file */ |
339681c0 | 1906 | 0, /* frob_file_before_adjust */ |
a161fe53 | 1907 | 0, /* frob_file_before_fix */ |
252b5132 | 1908 | coff_frob_file_after_relocs, |
4c63da97 AM |
1909 | 0, /* s_get_size */ |
1910 | 0, /* s_set_size */ | |
1911 | 0, /* s_get_align */ | |
1912 | 0, /* s_set_align */ | |
1913 | 0, /* s_get_other */ | |
5110c57e | 1914 | 0, /* s_set_other */ |
4c63da97 | 1915 | 0, /* s_get_desc */ |
5110c57e HPN |
1916 | 0, /* s_set_desc */ |
1917 | 0, /* s_get_type */ | |
1918 | 0, /* s_set_type */ | |
4c63da97 AM |
1919 | 0, /* copy_symbol_attributes */ |
1920 | 0, /* generate_asm_lineno */ | |
1921 | 0, /* process_stab */ | |
5110c57e HPN |
1922 | coff_separate_stab_sections, |
1923 | obj_coff_init_stab_section, | |
4c63da97 | 1924 | 0, /* sec_sym_ok_for_reloc */ |
252b5132 | 1925 | coff_pop_insert, |
4c63da97 | 1926 | 0, /* ecoff_set_ext */ |
252b5132 | 1927 | coff_obj_read_begin_hook, |
4cae74aa | 1928 | coff_obj_symbol_new_hook, |
645ea3ea | 1929 | coff_obj_symbol_clone_hook, |
6309d591 | 1930 | coff_adjust_symtab |
252b5132 | 1931 | }; |