Commit | Line | Data |
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252b5132 | 1 | /* coff object file format |
4b95cf5c | 2 | Copyright (C) 1989-2014 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 | ||
a5324a3e | 80 | st = malloc (sizeof (* st)); |
252b5132 | 81 | if (!st) |
a5324a3e | 82 | return NULL; |
252b5132 RH |
83 | st->data = malloc (chunk_size); |
84 | if (!st->data) | |
85 | { | |
86 | free (st); | |
a5324a3e | 87 | return NULL; |
252b5132 RH |
88 | } |
89 | st->pointer = 0; | |
90 | st->size = chunk_size; | |
91 | st->chunk_size = chunk_size; | |
92 | st->element_size = element_size; | |
93 | return st; | |
94 | } | |
95 | ||
252b5132 | 96 | static char * |
a5324a3e | 97 | stack_push (stack *st, char *element) |
252b5132 RH |
98 | { |
99 | if (st->pointer + st->element_size >= st->size) | |
100 | { | |
101 | st->size += st->chunk_size; | |
a5324a3e NC |
102 | if ((st->data = xrealloc (st->data, st->size)) == NULL) |
103 | return NULL; | |
252b5132 RH |
104 | } |
105 | memcpy (st->data + st->pointer, element, st->element_size); | |
106 | st->pointer += st->element_size; | |
107 | return st->data + st->pointer; | |
108 | } | |
109 | ||
110 | static char * | |
a5324a3e | 111 | stack_pop (stack *st) |
252b5132 RH |
112 | { |
113 | if (st->pointer < st->element_size) | |
114 | { | |
115 | st->pointer = 0; | |
a5324a3e | 116 | return NULL; |
252b5132 RH |
117 | } |
118 | st->pointer -= st->element_size; | |
119 | return st->data + st->pointer; | |
120 | } | |
121 | \f | |
a5324a3e | 122 | /* Maintain a list of the tagnames of the structures. */ |
252b5132 RH |
123 | |
124 | static struct hash_control *tag_hash; | |
125 | ||
126 | static void | |
a5324a3e | 127 | tag_init (void) |
252b5132 RH |
128 | { |
129 | tag_hash = hash_new (); | |
130 | } | |
131 | ||
132 | static void | |
a5324a3e | 133 | tag_insert (const char *name, symbolS *symbolP) |
252b5132 RH |
134 | { |
135 | const char *error_string; | |
136 | ||
137 | if ((error_string = hash_jam (tag_hash, name, (char *) symbolP))) | |
a5324a3e NC |
138 | as_fatal (_("Inserting \"%s\" into structure table failed: %s"), |
139 | name, error_string); | |
252b5132 RH |
140 | } |
141 | ||
142 | static symbolS * | |
a5324a3e | 143 | tag_find (char *name) |
252b5132 | 144 | { |
252b5132 RH |
145 | return (symbolS *) hash_find (tag_hash, name); |
146 | } | |
147 | ||
148 | static symbolS * | |
a5324a3e | 149 | tag_find_or_make (char *name) |
252b5132 RH |
150 | { |
151 | symbolS *symbolP; | |
152 | ||
153 | if ((symbolP = tag_find (name)) == NULL) | |
154 | { | |
155 | symbolP = symbol_new (name, undefined_section, | |
156 | 0, &zero_address_frag); | |
157 | ||
158 | tag_insert (S_GET_NAME (symbolP), symbolP); | |
252b5132 | 159 | symbol_table_insert (symbolP); |
a5324a3e | 160 | } |
252b5132 RH |
161 | |
162 | return symbolP; | |
163 | } | |
164 | ||
165 | /* We accept the .bss directive to set the section for backward | |
166 | compatibility with earlier versions of gas. */ | |
167 | ||
168 | static void | |
a5324a3e | 169 | obj_coff_bss (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
170 | { |
171 | if (*input_line_pointer == '\n') | |
172 | subseg_new (".bss", get_absolute_expression ()); | |
173 | else | |
174 | s_lcomm (0); | |
175 | } | |
176 | ||
c1711530 DK |
177 | #ifdef TE_PE |
178 | /* Called from read.c:s_comm after we've parsed .comm symbol, size. | |
179 | Parse a possible alignment value. */ | |
180 | ||
181 | static symbolS * | |
182 | obj_coff_common_parse (int ignore ATTRIBUTE_UNUSED, symbolS *symbolP, addressT size) | |
183 | { | |
184 | addressT align = 0; | |
185 | ||
186 | if (*input_line_pointer == ',') | |
187 | { | |
188 | align = parse_align (0); | |
189 | if (align == (addressT) -1) | |
190 | return NULL; | |
191 | } | |
192 | ||
193 | S_SET_VALUE (symbolP, size); | |
194 | S_SET_EXTERNAL (symbolP); | |
195 | S_SET_SEGMENT (symbolP, bfd_com_section_ptr); | |
196 | ||
197 | symbol_get_bfdsym (symbolP)->flags |= BSF_OBJECT; | |
198 | ||
199 | /* There is no S_SET_ALIGN (symbolP, align) in COFF/PE. | |
200 | Instead we must add a note to the .drectve section. */ | |
201 | if (align) | |
202 | { | |
203 | segT current_seg = now_seg; | |
204 | subsegT current_subseg = now_subseg; | |
205 | flagword oldflags; | |
206 | asection *sec; | |
207 | size_t pfxlen, numlen; | |
208 | char *frag; | |
209 | char numbuff[20]; | |
210 | ||
211 | sec = subseg_new (".drectve", 0); | |
212 | oldflags = bfd_get_section_flags (stdoutput, sec); | |
213 | if (oldflags == SEC_NO_FLAGS) | |
214 | { | |
215 | if (!bfd_set_section_flags (stdoutput, sec, | |
216 | TC_COFF_SECTION_DEFAULT_ATTRIBUTES)) | |
217 | as_warn (_("error setting flags for \"%s\": %s"), | |
218 | bfd_section_name (stdoutput, sec), | |
219 | bfd_errmsg (bfd_get_error ())); | |
220 | } | |
221 | ||
222 | /* Emit a string. Note no NUL-termination. */ | |
a7879ef1 | 223 | pfxlen = strlen (" -aligncomm:") + 2 + strlen (S_GET_NAME (symbolP)) + 1; |
c1711530 DK |
224 | numlen = snprintf (numbuff, sizeof (numbuff), "%d", (int) align); |
225 | frag = frag_more (pfxlen + numlen); | |
a7879ef1 | 226 | (void) sprintf (frag, " -aligncomm:\"%s\",", S_GET_NAME (symbolP)); |
c1711530 DK |
227 | memcpy (frag + pfxlen, numbuff, numlen); |
228 | /* Restore original subseg. */ | |
229 | subseg_set (current_seg, current_subseg); | |
230 | } | |
231 | ||
232 | return symbolP; | |
233 | } | |
234 | ||
235 | static void | |
236 | obj_coff_comm (int ignore ATTRIBUTE_UNUSED) | |
237 | { | |
238 | s_comm_internal (ignore, obj_coff_common_parse); | |
239 | } | |
240 | #endif /* TE_PE */ | |
241 | ||
252b5132 | 242 | #define GET_FILENAME_STRING(X) \ |
a5324a3e | 243 | ((char *) (&((X)->sy_symbol.ost_auxent->x_file.x_n.x_offset))[1]) |
252b5132 RH |
244 | |
245 | /* @@ Ick. */ | |
246 | static segT | |
a5324a3e | 247 | fetch_coff_debug_section (void) |
252b5132 RH |
248 | { |
249 | static segT debug_section; | |
a5324a3e | 250 | |
252b5132 RH |
251 | if (!debug_section) |
252 | { | |
5a38dc70 | 253 | const asymbol *s; |
a5324a3e NC |
254 | |
255 | s = bfd_make_debug_symbol (stdoutput, NULL, 0); | |
9c2799c2 | 256 | gas_assert (s != 0); |
252b5132 RH |
257 | debug_section = s->section; |
258 | } | |
259 | return debug_section; | |
260 | } | |
261 | ||
262 | void | |
a5324a3e | 263 | SA_SET_SYM_ENDNDX (symbolS *sym, symbolS *val) |
252b5132 RH |
264 | { |
265 | combined_entry_type *entry, *p; | |
266 | ||
49309057 ILT |
267 | entry = &coffsymbol (symbol_get_bfdsym (sym))->native[1]; |
268 | p = coffsymbol (symbol_get_bfdsym (val))->native; | |
252b5132 RH |
269 | entry->u.auxent.x_sym.x_fcnary.x_fcn.x_endndx.p = p; |
270 | entry->fix_end = 1; | |
271 | } | |
272 | ||
273 | static void | |
a5324a3e | 274 | SA_SET_SYM_TAGNDX (symbolS *sym, symbolS *val) |
252b5132 RH |
275 | { |
276 | combined_entry_type *entry, *p; | |
277 | ||
49309057 ILT |
278 | entry = &coffsymbol (symbol_get_bfdsym (sym))->native[1]; |
279 | p = coffsymbol (symbol_get_bfdsym (val))->native; | |
252b5132 RH |
280 | entry->u.auxent.x_sym.x_tagndx.p = p; |
281 | entry->fix_tag = 1; | |
282 | } | |
283 | ||
284 | static int | |
a5324a3e | 285 | S_GET_DATA_TYPE (symbolS *sym) |
252b5132 | 286 | { |
49309057 | 287 | return coffsymbol (symbol_get_bfdsym (sym))->native->u.syment.n_type; |
252b5132 RH |
288 | } |
289 | ||
290 | int | |
a5324a3e | 291 | S_SET_DATA_TYPE (symbolS *sym, int val) |
252b5132 | 292 | { |
49309057 | 293 | coffsymbol (symbol_get_bfdsym (sym))->native->u.syment.n_type = val; |
252b5132 RH |
294 | return val; |
295 | } | |
296 | ||
297 | int | |
a5324a3e | 298 | S_GET_STORAGE_CLASS (symbolS *sym) |
252b5132 | 299 | { |
49309057 | 300 | return coffsymbol (symbol_get_bfdsym (sym))->native->u.syment.n_sclass; |
252b5132 RH |
301 | } |
302 | ||
303 | int | |
a5324a3e | 304 | S_SET_STORAGE_CLASS (symbolS *sym, int val) |
252b5132 | 305 | { |
49309057 | 306 | coffsymbol (symbol_get_bfdsym (sym))->native->u.syment.n_sclass = val; |
252b5132 RH |
307 | return val; |
308 | } | |
309 | ||
dcd619be | 310 | /* Merge a debug symbol containing debug information into a normal symbol. */ |
252b5132 | 311 | |
a5324a3e NC |
312 | static void |
313 | c_symbol_merge (symbolS *debug, symbolS *normal) | |
252b5132 RH |
314 | { |
315 | S_SET_DATA_TYPE (normal, S_GET_DATA_TYPE (debug)); | |
316 | S_SET_STORAGE_CLASS (normal, S_GET_STORAGE_CLASS (debug)); | |
317 | ||
318 | if (S_GET_NUMBER_AUXILIARY (debug) > S_GET_NUMBER_AUXILIARY (normal)) | |
a5324a3e NC |
319 | /* Take the most we have. */ |
320 | S_SET_NUMBER_AUXILIARY (normal, S_GET_NUMBER_AUXILIARY (debug)); | |
252b5132 RH |
321 | |
322 | if (S_GET_NUMBER_AUXILIARY (debug) > 0) | |
a5324a3e NC |
323 | /* Move all the auxiliary information. */ |
324 | memcpy (SYM_AUXINFO (normal), SYM_AUXINFO (debug), | |
325 | (S_GET_NUMBER_AUXILIARY (debug) | |
326 | * sizeof (*SYM_AUXINFO (debug)))); | |
252b5132 | 327 | |
dcd619be | 328 | /* Move the debug flags. */ |
252b5132 RH |
329 | SF_SET_DEBUG_FIELD (normal, SF_GET_DEBUG_FIELD (debug)); |
330 | } | |
331 | ||
332 | void | |
a4528eeb | 333 | c_dot_file_symbol (const char *filename, int appfile ATTRIBUTE_UNUSED) |
252b5132 RH |
334 | { |
335 | symbolS *symbolP; | |
336 | ||
0561a208 ILT |
337 | /* BFD converts filename to a .file symbol with an aux entry. It |
338 | also handles chaining. */ | |
252b5132 RH |
339 | symbolP = symbol_new (filename, bfd_abs_section_ptr, 0, &zero_address_frag); |
340 | ||
341 | S_SET_STORAGE_CLASS (symbolP, C_FILE); | |
342 | S_SET_NUMBER_AUXILIARY (symbolP, 1); | |
343 | ||
49309057 | 344 | symbol_get_bfdsym (symbolP)->flags = BSF_DEBUGGING; |
252b5132 RH |
345 | |
346 | #ifndef NO_LISTING | |
347 | { | |
348 | extern int listing; | |
a5324a3e | 349 | |
252b5132 | 350 | if (listing) |
a5324a3e | 351 | listing_source_file (filename); |
252b5132 RH |
352 | } |
353 | #endif | |
354 | ||
a5324a3e | 355 | /* Make sure that the symbol is first on the symbol chain. */ |
252b5132 RH |
356 | if (symbol_rootP != symbolP) |
357 | { | |
358 | symbol_remove (symbolP, &symbol_rootP, &symbol_lastP); | |
359 | symbol_insert (symbolP, symbol_rootP, &symbol_rootP, &symbol_lastP); | |
a5324a3e | 360 | } |
252b5132 RH |
361 | } |
362 | ||
a5324a3e | 363 | /* Line number handling. */ |
252b5132 | 364 | |
a5324a3e NC |
365 | struct line_no |
366 | { | |
252b5132 RH |
367 | struct line_no *next; |
368 | fragS *frag; | |
369 | alent l; | |
370 | }; | |
371 | ||
372 | int coff_line_base; | |
373 | ||
374 | /* Symbol of last function, which we should hang line#s off of. */ | |
375 | static symbolS *line_fsym; | |
376 | ||
377 | #define in_function() (line_fsym != 0) | |
378 | #define clear_function() (line_fsym = 0) | |
379 | #define set_function(F) (line_fsym = (F), coff_add_linesym (F)) | |
380 | ||
381 | \f | |
382 | void | |
a5324a3e | 383 | coff_obj_symbol_new_hook (symbolS *symbolP) |
252b5132 RH |
384 | { |
385 | long sz = (OBJ_COFF_MAX_AUXENTRIES + 1) * sizeof (combined_entry_type); | |
a5324a3e | 386 | char * s = xmalloc (sz); |
dcd619be | 387 | |
252b5132 | 388 | memset (s, 0, sz); |
49309057 | 389 | coffsymbol (symbol_get_bfdsym (symbolP))->native = (combined_entry_type *) s; |
252b5132 RH |
390 | |
391 | S_SET_DATA_TYPE (symbolP, T_NULL); | |
392 | S_SET_STORAGE_CLASS (symbolP, 0); | |
393 | S_SET_NUMBER_AUXILIARY (symbolP, 0); | |
394 | ||
395 | if (S_IS_STRING (symbolP)) | |
396 | SF_SET_STRING (symbolP); | |
dcd619be | 397 | |
252b5132 RH |
398 | if (S_IS_LOCAL (symbolP)) |
399 | SF_SET_LOCAL (symbolP); | |
400 | } | |
401 | ||
6a2b6326 JB |
402 | void |
403 | coff_obj_symbol_clone_hook (symbolS *newsymP, symbolS *orgsymP) | |
404 | { | |
405 | long sz = (OBJ_COFF_MAX_AUXENTRIES + 1) * sizeof (combined_entry_type); | |
406 | combined_entry_type * s = xmalloc (sz); | |
407 | ||
408 | memcpy (s, coffsymbol (symbol_get_bfdsym (orgsymP))->native, sz); | |
409 | coffsymbol (symbol_get_bfdsym (newsymP))->native = s; | |
410 | ||
411 | SF_SET (newsymP, SF_GET (orgsymP)); | |
412 | } | |
413 | ||
252b5132 | 414 | \f |
a5324a3e | 415 | /* Handle .ln directives. */ |
252b5132 RH |
416 | |
417 | static symbolS *current_lineno_sym; | |
418 | static struct line_no *line_nos; | |
a5324a3e | 419 | /* FIXME: Blindly assume all .ln directives will be in the .text section. */ |
252b5132 RH |
420 | int coff_n_line_nos; |
421 | ||
422 | static void | |
a5324a3e | 423 | add_lineno (fragS * frag, addressT offset, int num) |
252b5132 | 424 | { |
a5324a3e NC |
425 | struct line_no * new_line = xmalloc (sizeof (* new_line)); |
426 | ||
252b5132 | 427 | if (!current_lineno_sym) |
a5324a3e | 428 | abort (); |
6877bb43 TR |
429 | |
430 | #ifndef OBJ_XCOFF | |
a5324a3e | 431 | /* The native aix assembler accepts negative line number. */ |
6877bb43 | 432 | |
dcd619be | 433 | if (num <= 0) |
e8a3ab75 ILT |
434 | { |
435 | /* Zero is used as an end marker in the file. */ | |
b985eaa8 ILT |
436 | as_warn (_("Line numbers must be positive integers\n")); |
437 | num = 1; | |
e8a3ab75 | 438 | } |
6877bb43 | 439 | #endif /* OBJ_XCOFF */ |
252b5132 RH |
440 | new_line->next = line_nos; |
441 | new_line->frag = frag; | |
442 | new_line->l.line_number = num; | |
443 | new_line->l.u.offset = offset; | |
444 | line_nos = new_line; | |
445 | coff_n_line_nos++; | |
446 | } | |
447 | ||
448 | void | |
a5324a3e | 449 | coff_add_linesym (symbolS *sym) |
252b5132 RH |
450 | { |
451 | if (line_nos) | |
452 | { | |
49309057 ILT |
453 | coffsymbol (symbol_get_bfdsym (current_lineno_sym))->lineno = |
454 | (alent *) line_nos; | |
252b5132 RH |
455 | coff_n_line_nos++; |
456 | line_nos = 0; | |
457 | } | |
458 | current_lineno_sym = sym; | |
459 | } | |
460 | ||
461 | static void | |
a5324a3e | 462 | obj_coff_ln (int appline) |
252b5132 RH |
463 | { |
464 | int l; | |
465 | ||
466 | if (! appline && def_symbol_in_progress != NULL) | |
467 | { | |
468 | as_warn (_(".ln pseudo-op inside .def/.endef: ignored.")); | |
469 | demand_empty_rest_of_line (); | |
470 | return; | |
471 | } | |
472 | ||
473 | l = get_absolute_expression (); | |
252b5132 | 474 | |
e237d851 NC |
475 | /* If there is no lineno symbol, treat a .ln |
476 | directive as if it were a .appline directive. */ | |
477 | if (appline || current_lineno_sym == NULL) | |
252b5132 | 478 | new_logical_line ((char *) NULL, l - 1); |
e237d851 NC |
479 | else |
480 | add_lineno (frag_now, frag_now_fix (), l); | |
252b5132 RH |
481 | |
482 | #ifndef NO_LISTING | |
483 | { | |
484 | extern int listing; | |
485 | ||
486 | if (listing) | |
487 | { | |
488 | if (! appline) | |
489 | l += coff_line_base - 1; | |
490 | listing_source_line (l); | |
491 | } | |
492 | } | |
493 | #endif | |
494 | ||
495 | demand_empty_rest_of_line (); | |
496 | } | |
497 | ||
28428223 ILT |
498 | /* .loc is essentially the same as .ln; parse it for assembler |
499 | compatibility. */ | |
500 | ||
501 | static void | |
a5324a3e | 502 | obj_coff_loc (int ignore ATTRIBUTE_UNUSED) |
28428223 ILT |
503 | { |
504 | int lineno; | |
505 | ||
506 | /* FIXME: Why do we need this check? We need it for ECOFF, but why | |
507 | do we need it for COFF? */ | |
508 | if (now_seg != text_section) | |
509 | { | |
510 | as_warn (_(".loc outside of .text")); | |
511 | demand_empty_rest_of_line (); | |
512 | return; | |
513 | } | |
514 | ||
515 | if (def_symbol_in_progress != NULL) | |
516 | { | |
517 | as_warn (_(".loc pseudo-op inside .def/.endef: ignored.")); | |
518 | demand_empty_rest_of_line (); | |
519 | return; | |
520 | } | |
521 | ||
522 | /* Skip the file number. */ | |
523 | SKIP_WHITESPACE (); | |
524 | get_absolute_expression (); | |
525 | SKIP_WHITESPACE (); | |
526 | ||
527 | lineno = get_absolute_expression (); | |
528 | ||
529 | #ifndef NO_LISTING | |
530 | { | |
531 | extern int listing; | |
532 | ||
533 | if (listing) | |
534 | { | |
cc8a6dd0 | 535 | lineno += coff_line_base - 1; |
28428223 ILT |
536 | listing_source_line (lineno); |
537 | } | |
538 | } | |
539 | #endif | |
540 | ||
541 | demand_empty_rest_of_line (); | |
542 | ||
543 | add_lineno (frag_now, frag_now_fix (), lineno); | |
544 | } | |
545 | ||
7a6284c4 ILT |
546 | /* Handle the .ident pseudo-op. */ |
547 | ||
548 | static void | |
a5324a3e | 549 | obj_coff_ident (int ignore ATTRIBUTE_UNUSED) |
7a6284c4 ILT |
550 | { |
551 | segT current_seg = now_seg; | |
552 | subsegT current_subseg = now_subseg; | |
553 | ||
554 | #ifdef TE_PE | |
555 | { | |
556 | segT sec; | |
557 | ||
558 | /* We could put it in .comment, but that creates an extra section | |
559 | that shouldn't be loaded into memory, which requires linker | |
560 | changes... For now, until proven otherwise, use .rdata. */ | |
561 | sec = subseg_new (".rdata$zzz", 0); | |
562 | bfd_set_section_flags (stdoutput, sec, | |
563 | ((SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_DATA) | |
564 | & bfd_applicable_section_flags (stdoutput))); | |
565 | } | |
566 | #else | |
567 | subseg_new (".comment", 0); | |
568 | #endif | |
569 | ||
38a57ae7 | 570 | stringer (8 + 1); |
7a6284c4 ILT |
571 | subseg_set (current_seg, current_subseg); |
572 | } | |
573 | ||
a5324a3e NC |
574 | /* Handle .def directives. |
575 | ||
576 | One might ask : why can't we symbol_new if the symbol does not | |
577 | already exist and fill it with debug information. Because of | |
578 | the C_EFCN special symbol. It would clobber the value of the | |
579 | function symbol before we have a chance to notice that it is | |
580 | a C_EFCN. And a second reason is that the code is more clear this | |
581 | way. (at least I think it is :-). */ | |
252b5132 RH |
582 | |
583 | #define SKIP_SEMI_COLON() while (*input_line_pointer++ != ';') | |
584 | #define SKIP_WHITESPACES() while (*input_line_pointer == ' ' || \ | |
a5324a3e NC |
585 | *input_line_pointer == '\t') \ |
586 | input_line_pointer++; | |
252b5132 RH |
587 | |
588 | static void | |
a5324a3e | 589 | obj_coff_def (int what ATTRIBUTE_UNUSED) |
252b5132 | 590 | { |
a5324a3e NC |
591 | char name_end; /* Char after the end of name. */ |
592 | char *symbol_name; /* Name of the debug symbol. */ | |
593 | char *symbol_name_copy; /* Temporary copy of the name. */ | |
252b5132 RH |
594 | unsigned int symbol_name_length; |
595 | ||
596 | if (def_symbol_in_progress != NULL) | |
597 | { | |
598 | as_warn (_(".def pseudo-op used inside of .def/.endef: ignored.")); | |
599 | demand_empty_rest_of_line (); | |
600 | return; | |
a5324a3e | 601 | } |
252b5132 RH |
602 | |
603 | SKIP_WHITESPACES (); | |
604 | ||
605 | symbol_name = input_line_pointer; | |
252b5132 RH |
606 | name_end = get_symbol_end (); |
607 | symbol_name_length = strlen (symbol_name); | |
608 | symbol_name_copy = xmalloc (symbol_name_length + 1); | |
609 | strcpy (symbol_name_copy, symbol_name); | |
610 | #ifdef tc_canonicalize_symbol_name | |
611 | symbol_name_copy = tc_canonicalize_symbol_name (symbol_name_copy); | |
612 | #endif | |
613 | ||
a5324a3e | 614 | /* Initialize the new symbol. */ |
252b5132 | 615 | def_symbol_in_progress = symbol_make (symbol_name_copy); |
49309057 | 616 | symbol_set_frag (def_symbol_in_progress, &zero_address_frag); |
252b5132 RH |
617 | S_SET_VALUE (def_symbol_in_progress, 0); |
618 | ||
619 | if (S_IS_STRING (def_symbol_in_progress)) | |
620 | SF_SET_STRING (def_symbol_in_progress); | |
621 | ||
622 | *input_line_pointer = name_end; | |
623 | ||
624 | demand_empty_rest_of_line (); | |
625 | } | |
626 | ||
252b5132 | 627 | static void |
a5324a3e | 628 | obj_coff_endef (int ignore ATTRIBUTE_UNUSED) |
252b5132 | 629 | { |
c9900432 | 630 | symbolS *symbolP = NULL; |
252b5132 | 631 | |
252b5132 RH |
632 | if (def_symbol_in_progress == NULL) |
633 | { | |
634 | as_warn (_(".endef pseudo-op used outside of .def/.endef: ignored.")); | |
635 | demand_empty_rest_of_line (); | |
636 | return; | |
a5324a3e | 637 | } |
252b5132 | 638 | |
dcd619be | 639 | /* Set the section number according to storage class. */ |
252b5132 RH |
640 | switch (S_GET_STORAGE_CLASS (def_symbol_in_progress)) |
641 | { | |
642 | case C_STRTAG: | |
643 | case C_ENTAG: | |
644 | case C_UNTAG: | |
645 | SF_SET_TAG (def_symbol_in_progress); | |
a5324a3e | 646 | /* Fall through. */ |
252b5132 RH |
647 | case C_FILE: |
648 | case C_TPDEF: | |
649 | SF_SET_DEBUG (def_symbol_in_progress); | |
650 | S_SET_SEGMENT (def_symbol_in_progress, fetch_coff_debug_section ()); | |
651 | break; | |
652 | ||
653 | case C_EFCN: | |
dcd619be | 654 | SF_SET_LOCAL (def_symbol_in_progress); /* Do not emit this symbol. */ |
a5324a3e | 655 | /* Fall through. */ |
252b5132 | 656 | case C_BLOCK: |
a5324a3e NC |
657 | SF_SET_PROCESS (def_symbol_in_progress); /* Will need processing before writing. */ |
658 | /* Fall through. */ | |
252b5132 RH |
659 | case C_FCN: |
660 | { | |
5a38dc70 | 661 | const char *name; |
a5324a3e | 662 | |
252b5132 RH |
663 | S_SET_SEGMENT (def_symbol_in_progress, text_section); |
664 | ||
49309057 | 665 | name = S_GET_NAME (def_symbol_in_progress); |
23dab925 | 666 | if (name[0] == '.' && name[2] == 'f' && name[3] == '\0') |
cc8a6dd0 | 667 | { |
23dab925 ILT |
668 | switch (name[1]) |
669 | { | |
dcd619be | 670 | case 'b': |
23dab925 ILT |
671 | /* .bf */ |
672 | if (! in_function ()) | |
673 | as_warn (_("`%s' symbol without preceding function"), name); | |
674 | /* Will need relocating. */ | |
675 | SF_SET_PROCESS (def_symbol_in_progress); | |
676 | clear_function (); | |
677 | break; | |
678 | #ifdef TE_PE | |
dcd619be | 679 | case 'e': |
23dab925 ILT |
680 | /* .ef */ |
681 | /* The MS compilers output the actual endline, not the | |
682 | function-relative one... we want to match without | |
683 | changing the assembler input. */ | |
dcd619be | 684 | SA_SET_SYM_LNNO (def_symbol_in_progress, |
23dab925 ILT |
685 | (SA_GET_SYM_LNNO (def_symbol_in_progress) |
686 | + coff_line_base)); | |
687 | break; | |
688 | #endif | |
689 | } | |
252b5132 RH |
690 | } |
691 | } | |
692 | break; | |
693 | ||
694 | #ifdef C_AUTOARG | |
695 | case C_AUTOARG: | |
696 | #endif /* C_AUTOARG */ | |
697 | case C_AUTO: | |
698 | case C_REG: | |
699 | case C_ARG: | |
700 | case C_REGPARM: | |
701 | case C_FIELD: | |
56385375 L |
702 | |
703 | /* According to the COFF documentation: | |
704 | ||
705 | http://osr5doc.sco.com:1996/topics/COFF_SectNumFld.html | |
706 | ||
707 | A special section number (-2) marks symbolic debugging symbols, | |
708 | including structure/union/enumeration tag names, typedefs, and | |
dcd619be | 709 | the name of the file. A section number of -1 indicates that the |
56385375 | 710 | symbol has a value but is not relocatable. Examples of |
dcd619be KH |
711 | absolute-valued symbols include automatic and register variables, |
712 | function arguments, and .eos symbols. | |
56385375 L |
713 | |
714 | But from Ian Lance Taylor: | |
715 | ||
716 | http://sources.redhat.com/ml/binutils/2000-08/msg00202.html | |
717 | ||
718 | the actual tools all marked them as section -1. So the GNU COFF | |
719 | assembler follows historical COFF assemblers. | |
720 | ||
721 | However, it causes problems for djgpp | |
722 | ||
723 | http://sources.redhat.com/ml/binutils/2000-08/msg00210.html | |
724 | ||
725 | By defining STRICTCOFF, a COFF port can make the assembler to | |
dcd619be | 726 | follow the documented behavior. */ |
56385375 | 727 | #ifdef STRICTCOFF |
252b5132 RH |
728 | case C_MOS: |
729 | case C_MOE: | |
730 | case C_MOU: | |
731 | case C_EOS: | |
56385375 | 732 | #endif |
d1d8ba22 | 733 | SF_SET_DEBUG (def_symbol_in_progress); |
252b5132 RH |
734 | S_SET_SEGMENT (def_symbol_in_progress, absolute_section); |
735 | break; | |
736 | ||
56385375 L |
737 | #ifndef STRICTCOFF |
738 | case C_MOS: | |
739 | case C_MOE: | |
740 | case C_MOU: | |
741 | case C_EOS: | |
742 | S_SET_SEGMENT (def_symbol_in_progress, absolute_section); | |
743 | break; | |
744 | #endif | |
745 | ||
252b5132 RH |
746 | case C_EXT: |
747 | case C_WEAKEXT: | |
748 | #ifdef TE_PE | |
749 | case C_NT_WEAK: | |
750 | #endif | |
751 | case C_STAT: | |
752 | case C_LABEL: | |
a5324a3e | 753 | /* Valid but set somewhere else (s_comm, s_lcomm, colon). */ |
252b5132 RH |
754 | break; |
755 | ||
756 | default: | |
757 | case C_USTATIC: | |
758 | case C_EXTDEF: | |
759 | case C_ULABEL: | |
760 | as_warn (_("unexpected storage class %d"), | |
761 | S_GET_STORAGE_CLASS (def_symbol_in_progress)); | |
762 | break; | |
a5324a3e | 763 | } |
252b5132 RH |
764 | |
765 | /* Now that we have built a debug symbol, try to find if we should | |
766 | merge with an existing symbol or not. If a symbol is C_EFCN or | |
9690c54d ILT |
767 | absolute_section or untagged SEG_DEBUG it never merges. We also |
768 | don't merge labels, which are in a different namespace, nor | |
769 | symbols which have not yet been defined since they are typically | |
770 | unique, nor do we merge tags with non-tags. */ | |
252b5132 RH |
771 | |
772 | /* Two cases for functions. Either debug followed by definition or | |
773 | definition followed by debug. For definition first, we will | |
774 | merge the debug symbol into the definition. For debug first, the | |
775 | lineno entry MUST point to the definition function or else it | |
776 | will point off into space when obj_crawl_symbol_chain() merges | |
777 | the debug symbol into the real symbol. Therefor, let's presume | |
dcd619be | 778 | the debug symbol is a real function reference. */ |
252b5132 RH |
779 | |
780 | /* FIXME-SOON If for some reason the definition label/symbol is | |
781 | never seen, this will probably leave an undefined symbol at link | |
dcd619be | 782 | time. */ |
252b5132 RH |
783 | |
784 | if (S_GET_STORAGE_CLASS (def_symbol_in_progress) == C_EFCN | |
9690c54d | 785 | || S_GET_STORAGE_CLASS (def_symbol_in_progress) == C_LABEL |
a5324a3e NC |
786 | || (streq (bfd_get_section_name (stdoutput, |
787 | S_GET_SEGMENT (def_symbol_in_progress)), | |
788 | "*DEBUG*") | |
252b5132 RH |
789 | && !SF_GET_TAG (def_symbol_in_progress)) |
790 | || S_GET_SEGMENT (def_symbol_in_progress) == absolute_section | |
9690c54d | 791 | || ! symbol_constant_p (def_symbol_in_progress) |
91c4c449 | 792 | || (symbolP = symbol_find (S_GET_NAME (def_symbol_in_progress))) == NULL |
9690c54d | 793 | || SF_GET_TAG (def_symbol_in_progress) != SF_GET_TAG (symbolP)) |
252b5132 | 794 | { |
9690c54d | 795 | /* If it already is at the end of the symbol list, do nothing */ |
252b5132 | 796 | if (def_symbol_in_progress != symbol_lastP) |
cc8a6dd0 | 797 | { |
9690c54d ILT |
798 | symbol_remove (def_symbol_in_progress, &symbol_rootP, &symbol_lastP); |
799 | symbol_append (def_symbol_in_progress, symbol_lastP, &symbol_rootP, | |
800 | &symbol_lastP); | |
cc8a6dd0 | 801 | } |
252b5132 RH |
802 | } |
803 | else | |
804 | { | |
805 | /* This symbol already exists, merge the newly created symbol | |
806 | into the old one. This is not mandatory. The linker can | |
807 | handle duplicate symbols correctly. But I guess that it save | |
808 | a *lot* of space if the assembly file defines a lot of | |
a5324a3e | 809 | symbols. [loic] */ |
252b5132 RH |
810 | |
811 | /* The debug entry (def_symbol_in_progress) is merged into the | |
dcd619be | 812 | previous definition. */ |
252b5132 RH |
813 | |
814 | c_symbol_merge (def_symbol_in_progress, symbolP); | |
815 | symbol_remove (def_symbol_in_progress, &symbol_rootP, &symbol_lastP); | |
816 | ||
817 | def_symbol_in_progress = symbolP; | |
818 | ||
819 | if (SF_GET_FUNCTION (def_symbol_in_progress) | |
820 | || SF_GET_TAG (def_symbol_in_progress) | |
821 | || S_GET_STORAGE_CLASS (def_symbol_in_progress) == C_STAT) | |
822 | { | |
823 | /* For functions, and tags, and static symbols, the symbol | |
824 | *must* be where the debug symbol appears. Move the | |
dcd619be | 825 | existing symbol to the current place. */ |
a5324a3e | 826 | /* If it already is at the end of the symbol list, do nothing. */ |
252b5132 RH |
827 | if (def_symbol_in_progress != symbol_lastP) |
828 | { | |
829 | symbol_remove (def_symbol_in_progress, &symbol_rootP, &symbol_lastP); | |
830 | symbol_append (def_symbol_in_progress, symbol_lastP, &symbol_rootP, &symbol_lastP); | |
831 | } | |
832 | } | |
833 | } | |
834 | ||
835 | if (SF_GET_TAG (def_symbol_in_progress)) | |
836 | { | |
837 | symbolS *oldtag; | |
838 | ||
91c4c449 | 839 | oldtag = symbol_find (S_GET_NAME (def_symbol_in_progress)); |
252b5132 RH |
840 | if (oldtag == NULL || ! SF_GET_TAG (oldtag)) |
841 | tag_insert (S_GET_NAME (def_symbol_in_progress), | |
842 | def_symbol_in_progress); | |
843 | } | |
844 | ||
845 | if (SF_GET_FUNCTION (def_symbol_in_progress)) | |
846 | { | |
252b5132 RH |
847 | set_function (def_symbol_in_progress); |
848 | SF_SET_PROCESS (def_symbol_in_progress); | |
849 | ||
850 | if (symbolP == NULL) | |
a5324a3e NC |
851 | /* That is, if this is the first time we've seen the |
852 | function. */ | |
853 | symbol_table_insert (def_symbol_in_progress); | |
854 | ||
855 | } | |
252b5132 RH |
856 | |
857 | def_symbol_in_progress = NULL; | |
858 | demand_empty_rest_of_line (); | |
859 | } | |
860 | ||
861 | static void | |
a5324a3e | 862 | obj_coff_dim (int ignore ATTRIBUTE_UNUSED) |
252b5132 | 863 | { |
91d6fa6a | 864 | int d_index; |
252b5132 RH |
865 | |
866 | if (def_symbol_in_progress == NULL) | |
867 | { | |
868 | as_warn (_(".dim pseudo-op used outside of .def/.endef: ignored.")); | |
869 | demand_empty_rest_of_line (); | |
870 | return; | |
a5324a3e | 871 | } |
252b5132 RH |
872 | |
873 | S_SET_NUMBER_AUXILIARY (def_symbol_in_progress, 1); | |
874 | ||
91d6fa6a | 875 | for (d_index = 0; d_index < DIMNUM; d_index++) |
252b5132 RH |
876 | { |
877 | SKIP_WHITESPACES (); | |
91d6fa6a | 878 | SA_SET_SYM_DIMEN (def_symbol_in_progress, d_index, |
252b5132 RH |
879 | get_absolute_expression ()); |
880 | ||
881 | switch (*input_line_pointer) | |
882 | { | |
883 | case ',': | |
884 | input_line_pointer++; | |
885 | break; | |
886 | ||
887 | default: | |
888 | as_warn (_("badly formed .dim directive ignored")); | |
a5324a3e | 889 | /* Fall through. */ |
252b5132 RH |
890 | case '\n': |
891 | case ';': | |
91d6fa6a | 892 | d_index = DIMNUM; |
252b5132 RH |
893 | break; |
894 | } | |
895 | } | |
896 | ||
897 | demand_empty_rest_of_line (); | |
898 | } | |
899 | ||
900 | static void | |
a5324a3e | 901 | obj_coff_line (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
902 | { |
903 | int this_base; | |
904 | ||
905 | if (def_symbol_in_progress == NULL) | |
906 | { | |
907 | /* Probably stabs-style line? */ | |
908 | obj_coff_ln (0); | |
909 | return; | |
910 | } | |
911 | ||
912 | this_base = get_absolute_expression (); | |
a5324a3e | 913 | if (streq (".bf", S_GET_NAME (def_symbol_in_progress))) |
252b5132 RH |
914 | coff_line_base = this_base; |
915 | ||
916 | S_SET_NUMBER_AUXILIARY (def_symbol_in_progress, 1); | |
23dab925 | 917 | SA_SET_SYM_LNNO (def_symbol_in_progress, this_base); |
252b5132 RH |
918 | |
919 | demand_empty_rest_of_line (); | |
920 | ||
921 | #ifndef NO_LISTING | |
a5324a3e | 922 | if (streq (".bf", S_GET_NAME (def_symbol_in_progress))) |
252b5132 RH |
923 | { |
924 | extern int listing; | |
925 | ||
926 | if (listing) | |
23dab925 | 927 | listing_source_line ((unsigned int) this_base); |
252b5132 RH |
928 | } |
929 | #endif | |
930 | } | |
931 | ||
932 | static void | |
a5324a3e | 933 | obj_coff_size (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
934 | { |
935 | if (def_symbol_in_progress == NULL) | |
936 | { | |
937 | as_warn (_(".size pseudo-op used outside of .def/.endef ignored.")); | |
938 | demand_empty_rest_of_line (); | |
939 | return; | |
a5324a3e | 940 | } |
252b5132 RH |
941 | |
942 | S_SET_NUMBER_AUXILIARY (def_symbol_in_progress, 1); | |
943 | SA_SET_SYM_SIZE (def_symbol_in_progress, get_absolute_expression ()); | |
944 | demand_empty_rest_of_line (); | |
945 | } | |
946 | ||
947 | static void | |
a5324a3e | 948 | obj_coff_scl (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
949 | { |
950 | if (def_symbol_in_progress == NULL) | |
951 | { | |
952 | as_warn (_(".scl pseudo-op used outside of .def/.endef ignored.")); | |
953 | demand_empty_rest_of_line (); | |
954 | return; | |
a5324a3e | 955 | } |
252b5132 RH |
956 | |
957 | S_SET_STORAGE_CLASS (def_symbol_in_progress, get_absolute_expression ()); | |
958 | demand_empty_rest_of_line (); | |
959 | } | |
960 | ||
961 | static void | |
a5324a3e | 962 | obj_coff_tag (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
963 | { |
964 | char *symbol_name; | |
965 | char name_end; | |
966 | ||
967 | if (def_symbol_in_progress == NULL) | |
968 | { | |
969 | as_warn (_(".tag pseudo-op used outside of .def/.endef ignored.")); | |
970 | demand_empty_rest_of_line (); | |
971 | return; | |
972 | } | |
973 | ||
974 | S_SET_NUMBER_AUXILIARY (def_symbol_in_progress, 1); | |
975 | symbol_name = input_line_pointer; | |
976 | name_end = get_symbol_end (); | |
977 | ||
978 | #ifdef tc_canonicalize_symbol_name | |
979 | symbol_name = tc_canonicalize_symbol_name (symbol_name); | |
980 | #endif | |
981 | ||
982 | /* Assume that the symbol referred to by .tag is always defined. | |
dcd619be | 983 | This was a bad assumption. I've added find_or_make. xoxorich. */ |
252b5132 RH |
984 | SA_SET_SYM_TAGNDX (def_symbol_in_progress, |
985 | tag_find_or_make (symbol_name)); | |
986 | if (SA_GET_SYM_TAGNDX (def_symbol_in_progress) == 0L) | |
a5324a3e | 987 | as_warn (_("tag not found for .tag %s"), symbol_name); |
252b5132 RH |
988 | |
989 | SF_SET_TAGGED (def_symbol_in_progress); | |
990 | *input_line_pointer = name_end; | |
991 | ||
992 | demand_empty_rest_of_line (); | |
993 | } | |
994 | ||
995 | static void | |
a5324a3e | 996 | obj_coff_type (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
997 | { |
998 | if (def_symbol_in_progress == NULL) | |
999 | { | |
1000 | as_warn (_(".type pseudo-op used outside of .def/.endef ignored.")); | |
1001 | demand_empty_rest_of_line (); | |
1002 | return; | |
a5324a3e | 1003 | } |
252b5132 RH |
1004 | |
1005 | S_SET_DATA_TYPE (def_symbol_in_progress, get_absolute_expression ()); | |
1006 | ||
1007 | if (ISFCN (S_GET_DATA_TYPE (def_symbol_in_progress)) && | |
1008 | S_GET_STORAGE_CLASS (def_symbol_in_progress) != C_TPDEF) | |
a5324a3e | 1009 | SF_SET_FUNCTION (def_symbol_in_progress); |
252b5132 RH |
1010 | |
1011 | demand_empty_rest_of_line (); | |
1012 | } | |
1013 | ||
1014 | static void | |
a5324a3e | 1015 | obj_coff_val (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
1016 | { |
1017 | if (def_symbol_in_progress == NULL) | |
1018 | { | |
1019 | as_warn (_(".val pseudo-op used outside of .def/.endef ignored.")); | |
1020 | demand_empty_rest_of_line (); | |
1021 | return; | |
a5324a3e | 1022 | } |
252b5132 RH |
1023 | |
1024 | if (is_name_beginner (*input_line_pointer)) | |
1025 | { | |
1026 | char *symbol_name = input_line_pointer; | |
1027 | char name_end = get_symbol_end (); | |
1028 | ||
1029 | #ifdef tc_canonicalize_symbol_name | |
1030 | symbol_name = tc_canonicalize_symbol_name (symbol_name); | |
1031 | #endif | |
a5324a3e | 1032 | if (streq (symbol_name, ".")) |
252b5132 | 1033 | { |
a5324a3e | 1034 | /* If the .val is != from the .def (e.g. statics). */ |
49309057 | 1035 | symbol_set_frag (def_symbol_in_progress, frag_now); |
252b5132 | 1036 | S_SET_VALUE (def_symbol_in_progress, (valueT) frag_now_fix ()); |
252b5132 | 1037 | } |
a5324a3e | 1038 | else if (! streq (S_GET_NAME (def_symbol_in_progress), symbol_name)) |
252b5132 | 1039 | { |
49309057 ILT |
1040 | expressionS exp; |
1041 | ||
1042 | exp.X_op = O_symbol; | |
1043 | exp.X_add_symbol = symbol_find_or_make (symbol_name); | |
1044 | exp.X_op_symbol = NULL; | |
1045 | exp.X_add_number = 0; | |
1046 | symbol_set_value_expression (def_symbol_in_progress, &exp); | |
252b5132 RH |
1047 | |
1048 | /* If the segment is undefined when the forward reference is | |
1049 | resolved, then copy the segment id from the forward | |
1050 | symbol. */ | |
1051 | SF_SET_GET_SEGMENT (def_symbol_in_progress); | |
0561a208 ILT |
1052 | |
1053 | /* FIXME: gcc can generate address expressions here in | |
1054 | unusual cases (search for "obscure" in sdbout.c). We | |
1055 | just ignore the offset here, thus generating incorrect | |
1056 | debugging information. We ignore the rest of the line | |
1057 | just below. */ | |
252b5132 | 1058 | } |
0561a208 | 1059 | /* Otherwise, it is the name of a non debug symbol and its value |
dcd619be | 1060 | will be calculated later. */ |
252b5132 RH |
1061 | *input_line_pointer = name_end; |
1062 | } | |
1063 | else | |
1064 | { | |
1065 | S_SET_VALUE (def_symbol_in_progress, get_absolute_expression ()); | |
a5324a3e | 1066 | } |
252b5132 RH |
1067 | |
1068 | demand_empty_rest_of_line (); | |
1069 | } | |
1070 | ||
977cdf5a NC |
1071 | #ifdef TE_PE |
1072 | ||
1073 | /* Return nonzero if name begins with weak alternate symbol prefix. */ | |
1074 | ||
1075 | static int | |
1076 | weak_is_altname (const char * name) | |
1077 | { | |
a5324a3e | 1078 | return strneq (name, weak_altprefix, sizeof (weak_altprefix) - 1); |
977cdf5a NC |
1079 | } |
1080 | ||
1081 | /* Return the name of the alternate symbol | |
1082 | name corresponding to a weak symbol's name. */ | |
1083 | ||
1084 | static const char * | |
1085 | weak_name2altname (const char * name) | |
1086 | { | |
1087 | char *alt_name; | |
1088 | ||
1089 | alt_name = xmalloc (sizeof (weak_altprefix) + strlen (name)); | |
1090 | strcpy (alt_name, weak_altprefix); | |
1091 | return strcat (alt_name, name); | |
1092 | } | |
1093 | ||
a5324a3e | 1094 | /* Return the name of the weak symbol corresponding to an |
708587a4 | 1095 | alternate symbol. */ |
977cdf5a NC |
1096 | |
1097 | static const char * | |
1098 | weak_altname2name (const char * name) | |
1099 | { | |
9c2799c2 | 1100 | gas_assert (weak_is_altname (name)); |
b851162a | 1101 | return xstrdup (name + 6); |
977cdf5a NC |
1102 | } |
1103 | ||
1104 | /* Make a weak symbol name unique by | |
1105 | appending the name of an external symbol. */ | |
1106 | ||
1107 | static const char * | |
1108 | weak_uniquify (const char * name) | |
1109 | { | |
1110 | char *ret; | |
1111 | const char * unique = ""; | |
1112 | ||
22ba0981 | 1113 | #ifdef TE_PE |
977cdf5a NC |
1114 | if (an_external_name != NULL) |
1115 | unique = an_external_name; | |
1116 | #endif | |
9c2799c2 | 1117 | gas_assert (weak_is_altname (name)); |
977cdf5a | 1118 | |
977cdf5a NC |
1119 | ret = xmalloc (strlen (name) + strlen (unique) + 2); |
1120 | strcpy (ret, name); | |
1121 | strcat (ret, "."); | |
1122 | strcat (ret, unique); | |
1123 | return ret; | |
1124 | } | |
1125 | ||
06e77878 AO |
1126 | void |
1127 | pecoff_obj_set_weak_hook (symbolS *symbolP) | |
1128 | { | |
1129 | symbolS *alternateP; | |
1130 | ||
1131 | /* See _Microsoft Portable Executable and Common Object | |
1132 | File Format Specification_, section 5.5.3. | |
1133 | Create a symbol representing the alternate value. | |
1134 | coff_frob_symbol will set the value of this symbol from | |
1135 | the value of the weak symbol itself. */ | |
1136 | S_SET_STORAGE_CLASS (symbolP, C_NT_WEAK); | |
1137 | S_SET_NUMBER_AUXILIARY (symbolP, 1); | |
1138 | SA_SET_SYM_FSIZE (symbolP, IMAGE_WEAK_EXTERN_SEARCH_NOLIBRARY); | |
1139 | ||
1140 | alternateP = symbol_find_or_make (weak_name2altname (S_GET_NAME (symbolP))); | |
1141 | S_SET_EXTERNAL (alternateP); | |
1142 | S_SET_STORAGE_CLASS (alternateP, C_NT_WEAK); | |
1143 | ||
1144 | SA_SET_SYM_TAGNDX (symbolP, alternateP); | |
1145 | } | |
1146 | ||
1147 | void | |
1148 | pecoff_obj_clear_weak_hook (symbolS *symbolP) | |
1149 | { | |
1150 | symbolS *alternateP; | |
1151 | ||
1152 | S_SET_STORAGE_CLASS (symbolP, 0); | |
1153 | SA_SET_SYM_FSIZE (symbolP, 0); | |
1154 | ||
1155 | alternateP = symbol_find (weak_name2altname (S_GET_NAME (symbolP))); | |
1156 | S_CLEAR_EXTERNAL (alternateP); | |
1157 | } | |
1158 | ||
977cdf5a NC |
1159 | #endif /* TE_PE */ |
1160 | ||
c87db184 | 1161 | /* Handle .weak. This is a GNU extension in formats other than PE. */ |
977cdf5a | 1162 | |
c87db184 | 1163 | static void |
977cdf5a | 1164 | obj_coff_weak (int ignore ATTRIBUTE_UNUSED) |
c87db184 CF |
1165 | { |
1166 | char *name; | |
1167 | int c; | |
1168 | symbolS *symbolP; | |
1169 | ||
1170 | do | |
1171 | { | |
1172 | name = input_line_pointer; | |
1173 | c = get_symbol_end (); | |
1174 | if (*name == 0) | |
1175 | { | |
1176 | as_warn (_("badly formed .weak directive ignored")); | |
1177 | ignore_rest_of_line (); | |
1178 | return; | |
1179 | } | |
977cdf5a | 1180 | c = 0; |
c87db184 CF |
1181 | symbolP = symbol_find_or_make (name); |
1182 | *input_line_pointer = c; | |
1183 | SKIP_WHITESPACE (); | |
c87db184 | 1184 | S_SET_WEAK (symbolP); |
c87db184 | 1185 | |
c87db184 CF |
1186 | if (c == ',') |
1187 | { | |
1188 | input_line_pointer++; | |
1189 | SKIP_WHITESPACE (); | |
1190 | if (*input_line_pointer == '\n') | |
1191 | c = '\n'; | |
1192 | } | |
1193 | ||
1194 | } | |
1195 | while (c == ','); | |
1196 | ||
1197 | demand_empty_rest_of_line (); | |
1198 | } | |
1199 | ||
252b5132 | 1200 | void |
a5324a3e | 1201 | coff_obj_read_begin_hook (void) |
252b5132 | 1202 | { |
dcd619be | 1203 | /* These had better be the same. Usually 18 bytes. */ |
252b5132 RH |
1204 | know (sizeof (SYMENT) == sizeof (AUXENT)); |
1205 | know (SYMESZ == AUXESZ); | |
252b5132 RH |
1206 | tag_init (); |
1207 | } | |
1208 | ||
252b5132 | 1209 | symbolS *coff_last_function; |
17fc154e | 1210 | #ifndef OBJ_XCOFF |
252b5132 | 1211 | static symbolS *coff_last_bf; |
17fc154e | 1212 | #endif |
252b5132 RH |
1213 | |
1214 | void | |
a5324a3e | 1215 | coff_frob_symbol (symbolS *symp, int *punt) |
252b5132 RH |
1216 | { |
1217 | static symbolS *last_tagP; | |
1218 | static stack *block_stack; | |
1219 | static symbolS *set_end; | |
1220 | symbolS *next_set_end = NULL; | |
1221 | ||
1222 | if (symp == &abs_symbol) | |
1223 | { | |
1224 | *punt = 1; | |
1225 | return; | |
1226 | } | |
1227 | ||
1228 | if (current_lineno_sym) | |
a5324a3e | 1229 | coff_add_linesym (NULL); |
252b5132 RH |
1230 | |
1231 | if (!block_stack) | |
1232 | block_stack = stack_init (512, sizeof (symbolS*)); | |
1233 | ||
252b5132 | 1234 | #ifdef TE_PE |
977cdf5a NC |
1235 | if (S_GET_STORAGE_CLASS (symp) == C_NT_WEAK |
1236 | && ! S_IS_WEAK (symp) | |
1237 | && weak_is_altname (S_GET_NAME (symp))) | |
1238 | { | |
1239 | /* This is a weak alternate symbol. All processing of | |
1240 | PECOFFweak symbols is done here, through the alternate. */ | |
06e77878 AO |
1241 | symbolS *weakp = symbol_find_noref (weak_altname2name |
1242 | (S_GET_NAME (symp)), 1); | |
977cdf5a | 1243 | |
9c2799c2 NC |
1244 | gas_assert (weakp); |
1245 | gas_assert (S_GET_NUMBER_AUXILIARY (weakp) == 1); | |
977cdf5a | 1246 | |
06e77878 AO |
1247 | if (! S_IS_WEAK (weakp)) |
1248 | { | |
1249 | /* The symbol was turned from weak to strong. Discard altname. */ | |
1250 | *punt = 1; | |
1251 | return; | |
1252 | } | |
1253 | else if (symbol_equated_p (weakp)) | |
977cdf5a NC |
1254 | { |
1255 | /* The weak symbol has an alternate specified; symp is unneeded. */ | |
1256 | S_SET_STORAGE_CLASS (weakp, C_NT_WEAK); | |
1257 | SA_SET_SYM_TAGNDX (weakp, | |
1258 | symbol_get_value_expression (weakp)->X_add_symbol); | |
1259 | ||
1260 | S_CLEAR_EXTERNAL (symp); | |
1261 | *punt = 1; | |
1262 | return; | |
1263 | } | |
1264 | else | |
1265 | { | |
1266 | /* The weak symbol has been assigned an alternate value. | |
1267 | Copy this value to symp, and set symp as weakp's alternate. */ | |
1268 | if (S_GET_STORAGE_CLASS (weakp) != C_NT_WEAK) | |
1269 | { | |
1270 | S_SET_STORAGE_CLASS (symp, S_GET_STORAGE_CLASS (weakp)); | |
1271 | S_SET_STORAGE_CLASS (weakp, C_NT_WEAK); | |
1272 | } | |
1273 | ||
1274 | if (S_IS_DEFINED (weakp)) | |
1275 | { | |
1276 | /* This is a defined weak symbol. Copy value information | |
1277 | from the weak symbol itself to the alternate symbol. */ | |
1278 | symbol_set_value_expression (symp, | |
1279 | symbol_get_value_expression (weakp)); | |
1280 | symbol_set_frag (symp, symbol_get_frag (weakp)); | |
1281 | S_SET_SEGMENT (symp, S_GET_SEGMENT (weakp)); | |
1282 | } | |
1283 | else | |
1284 | { | |
1285 | /* This is an undefined weak symbol. | |
1286 | Define the alternate symbol to zero. */ | |
1287 | S_SET_VALUE (symp, 0); | |
1288 | S_SET_SEGMENT (symp, absolute_section); | |
1289 | } | |
1290 | ||
1291 | S_SET_NAME (symp, weak_uniquify (S_GET_NAME (symp))); | |
1292 | S_SET_STORAGE_CLASS (symp, C_EXT); | |
1293 | ||
1294 | S_SET_VALUE (weakp, 0); | |
1295 | S_SET_SEGMENT (weakp, undefined_section); | |
1296 | } | |
252b5132 | 1297 | } |
977cdf5a NC |
1298 | #else /* TE_PE */ |
1299 | if (S_IS_WEAK (symp)) | |
1300 | S_SET_STORAGE_CLASS (symp, C_WEAKEXT); | |
1301 | #endif /* TE_PE */ | |
252b5132 RH |
1302 | |
1303 | if (!S_IS_DEFINED (symp) | |
1304 | && !S_IS_WEAK (symp) | |
1305 | && S_GET_STORAGE_CLASS (symp) != C_STAT) | |
1306 | S_SET_STORAGE_CLASS (symp, C_EXT); | |
1307 | ||
1308 | if (!SF_GET_DEBUG (symp)) | |
1309 | { | |
bdbe95c8 NC |
1310 | symbolS * real; |
1311 | ||
252b5132 RH |
1312 | if (!SF_GET_LOCAL (symp) |
1313 | && !SF_GET_STATICS (symp) | |
39da8128 | 1314 | && S_GET_STORAGE_CLASS (symp) != C_LABEL |
a5324a3e | 1315 | && symbol_constant_p (symp) |
06e77878 | 1316 | && (real = symbol_find_noref (S_GET_NAME (symp), 1)) |
bdbe95c8 | 1317 | && S_GET_STORAGE_CLASS (real) == C_NULL |
252b5132 RH |
1318 | && real != symp) |
1319 | { | |
1320 | c_symbol_merge (symp, real); | |
1321 | *punt = 1; | |
39da8128 | 1322 | return; |
252b5132 | 1323 | } |
bdbe95c8 | 1324 | |
5e0d736c | 1325 | if (!S_IS_DEFINED (symp) && !SF_GET_LOCAL (symp)) |
252b5132 | 1326 | { |
9c2799c2 | 1327 | gas_assert (S_GET_VALUE (symp) == 0); |
06e77878 AO |
1328 | if (S_IS_WEAKREFD (symp)) |
1329 | *punt = 1; | |
1330 | else | |
1331 | S_SET_EXTERNAL (symp); | |
5e0d736c DD |
1332 | } |
1333 | else if (S_GET_STORAGE_CLASS (symp) == C_NULL) | |
1334 | { | |
1335 | if (S_GET_SEGMENT (symp) == text_section | |
1336 | && symp != seg_info (text_section)->sym) | |
1337 | S_SET_STORAGE_CLASS (symp, C_LABEL); | |
252b5132 | 1338 | else |
5e0d736c | 1339 | S_SET_STORAGE_CLASS (symp, C_STAT); |
252b5132 | 1340 | } |
bdbe95c8 | 1341 | |
252b5132 RH |
1342 | if (SF_GET_PROCESS (symp)) |
1343 | { | |
1344 | if (S_GET_STORAGE_CLASS (symp) == C_BLOCK) | |
1345 | { | |
a5324a3e | 1346 | if (streq (S_GET_NAME (symp), ".bb")) |
252b5132 RH |
1347 | stack_push (block_stack, (char *) &symp); |
1348 | else | |
1349 | { | |
1350 | symbolS *begin; | |
bdbe95c8 | 1351 | |
252b5132 RH |
1352 | begin = *(symbolS **) stack_pop (block_stack); |
1353 | if (begin == 0) | |
1354 | as_warn (_("mismatched .eb")); | |
1355 | else | |
1356 | next_set_end = begin; | |
1357 | } | |
1358 | } | |
bdbe95c8 | 1359 | |
c207c2c6 KT |
1360 | if (coff_last_function == 0 && SF_GET_FUNCTION (symp) |
1361 | && S_IS_DEFINED (symp)) | |
252b5132 RH |
1362 | { |
1363 | union internal_auxent *auxp; | |
bdbe95c8 | 1364 | |
252b5132 RH |
1365 | coff_last_function = symp; |
1366 | if (S_GET_NUMBER_AUXILIARY (symp) < 1) | |
1367 | S_SET_NUMBER_AUXILIARY (symp, 1); | |
0561a208 | 1368 | auxp = SYM_AUXENT (symp); |
252b5132 RH |
1369 | memset (auxp->x_sym.x_fcnary.x_ary.x_dimen, 0, |
1370 | sizeof (auxp->x_sym.x_fcnary.x_ary.x_dimen)); | |
1371 | } | |
bdbe95c8 | 1372 | |
c207c2c6 KT |
1373 | if (S_GET_STORAGE_CLASS (symp) == C_EFCN |
1374 | && S_IS_DEFINED (symp)) | |
252b5132 RH |
1375 | { |
1376 | if (coff_last_function == 0) | |
161840f9 ILT |
1377 | as_fatal (_("C_EFCN symbol for %s out of scope"), |
1378 | S_GET_NAME (symp)); | |
252b5132 RH |
1379 | SA_SET_SYM_FSIZE (coff_last_function, |
1380 | (long) (S_GET_VALUE (symp) | |
1381 | - S_GET_VALUE (coff_last_function))); | |
1382 | next_set_end = coff_last_function; | |
1383 | coff_last_function = 0; | |
1384 | } | |
1385 | } | |
bdbe95c8 | 1386 | |
252b5132 RH |
1387 | if (S_IS_EXTERNAL (symp)) |
1388 | S_SET_STORAGE_CLASS (symp, C_EXT); | |
1389 | else if (SF_GET_LOCAL (symp)) | |
1390 | *punt = 1; | |
1391 | ||
1392 | if (SF_GET_FUNCTION (symp)) | |
49309057 | 1393 | symbol_get_bfdsym (symp)->flags |= BSF_FUNCTION; |
252b5132 RH |
1394 | } |
1395 | ||
8828d862 ILT |
1396 | /* Double check weak symbols. */ |
1397 | if (S_IS_WEAK (symp) && S_IS_COMMON (symp)) | |
1398 | as_bad (_("Symbol `%s' can not be both weak and common"), | |
1399 | S_GET_NAME (symp)); | |
1400 | ||
252b5132 RH |
1401 | if (SF_GET_TAG (symp)) |
1402 | last_tagP = symp; | |
1403 | else if (S_GET_STORAGE_CLASS (symp) == C_EOS) | |
1404 | next_set_end = last_tagP; | |
1405 | ||
1406 | #ifdef OBJ_XCOFF | |
1407 | /* This is pretty horrible, but we have to set *punt correctly in | |
1408 | order to call SA_SET_SYM_ENDNDX correctly. */ | |
809ffe0d | 1409 | if (! symbol_used_in_reloc_p (symp) |
49309057 | 1410 | && ((symbol_get_bfdsym (symp)->flags & BSF_SECTION_SYM) != 0 |
670ec21d | 1411 | || (! (S_IS_EXTERNAL (symp) || S_IS_WEAK (symp)) |
809ffe0d | 1412 | && ! symbol_get_tc (symp)->output |
252b5132 RH |
1413 | && S_GET_STORAGE_CLASS (symp) != C_FILE))) |
1414 | *punt = 1; | |
1415 | #endif | |
1416 | ||
1417 | if (set_end != (symbolS *) NULL | |
1418 | && ! *punt | |
49309057 | 1419 | && ((symbol_get_bfdsym (symp)->flags & BSF_NOT_AT_END) != 0 |
252b5132 RH |
1420 | || (S_IS_DEFINED (symp) |
1421 | && ! S_IS_COMMON (symp) | |
1422 | && (! S_IS_EXTERNAL (symp) || SF_GET_FUNCTION (symp))))) | |
1423 | { | |
1424 | SA_SET_SYM_ENDNDX (set_end, symp); | |
1425 | set_end = NULL; | |
1426 | } | |
1427 | ||
a04b544b ILT |
1428 | if (next_set_end != NULL) |
1429 | { | |
1430 | if (set_end != NULL) | |
20203fb9 | 1431 | as_warn (_("Warning: internal error: forgetting to set endndx of %s"), |
a04b544b ILT |
1432 | S_GET_NAME (set_end)); |
1433 | set_end = next_set_end; | |
1434 | } | |
252b5132 | 1435 | |
8642cce8 | 1436 | #ifndef OBJ_XCOFF |
252b5132 RH |
1437 | if (! *punt |
1438 | && S_GET_STORAGE_CLASS (symp) == C_FCN | |
a5324a3e | 1439 | && streq (S_GET_NAME (symp), ".bf")) |
252b5132 RH |
1440 | { |
1441 | if (coff_last_bf != NULL) | |
1442 | SA_SET_SYM_ENDNDX (coff_last_bf, symp); | |
1443 | coff_last_bf = symp; | |
1444 | } | |
8642cce8 | 1445 | #endif |
49309057 | 1446 | if (coffsymbol (symbol_get_bfdsym (symp))->lineno) |
252b5132 RH |
1447 | { |
1448 | int i; | |
1449 | struct line_no *lptr; | |
1450 | alent *l; | |
1451 | ||
49309057 | 1452 | lptr = (struct line_no *) coffsymbol (symbol_get_bfdsym (symp))->lineno; |
252b5132 RH |
1453 | for (i = 0; lptr; lptr = lptr->next) |
1454 | i++; | |
49309057 | 1455 | lptr = (struct line_no *) coffsymbol (symbol_get_bfdsym (symp))->lineno; |
252b5132 RH |
1456 | |
1457 | /* We need i entries for line numbers, plus 1 for the first | |
1458 | entry which BFD will override, plus 1 for the last zero | |
1459 | entry (a marker for BFD). */ | |
a5324a3e | 1460 | l = xmalloc ((i + 2) * sizeof (* l)); |
49309057 | 1461 | coffsymbol (symbol_get_bfdsym (symp))->lineno = l; |
252b5132 RH |
1462 | l[i + 1].line_number = 0; |
1463 | l[i + 1].u.sym = NULL; | |
1464 | for (; i > 0; i--) | |
1465 | { | |
1466 | if (lptr->frag) | |
bea9907b | 1467 | lptr->l.u.offset += lptr->frag->fr_address / OCTETS_PER_BYTE; |
252b5132 RH |
1468 | l[i] = lptr->l; |
1469 | lptr = lptr->next; | |
1470 | } | |
1471 | } | |
1472 | } | |
1473 | ||
1474 | void | |
a5324a3e NC |
1475 | coff_adjust_section_syms (bfd *abfd ATTRIBUTE_UNUSED, |
1476 | asection *sec, | |
1477 | void * x ATTRIBUTE_UNUSED) | |
252b5132 RH |
1478 | { |
1479 | symbolS *secsym; | |
1480 | segment_info_type *seginfo = seg_info (sec); | |
1481 | int nlnno, nrelocs = 0; | |
1482 | ||
1483 | /* RS/6000 gas creates a .debug section manually in ppc_frob_file in | |
1484 | tc-ppc.c. Do not get confused by it. */ | |
1485 | if (seginfo == NULL) | |
1486 | return; | |
1487 | ||
a5324a3e | 1488 | if (streq (sec->name, ".text")) |
252b5132 RH |
1489 | nlnno = coff_n_line_nos; |
1490 | else | |
1491 | nlnno = 0; | |
1492 | { | |
1493 | /* @@ Hope that none of the fixups expand to more than one reloc | |
1494 | entry... */ | |
1495 | fixS *fixp = seginfo->fix_root; | |
1496 | while (fixp) | |
1497 | { | |
1498 | if (! fixp->fx_done) | |
1499 | nrelocs++; | |
1500 | fixp = fixp->fx_next; | |
1501 | } | |
1502 | } | |
587aac4e | 1503 | if (bfd_get_section_size (sec) == 0 |
252b5132 RH |
1504 | && nrelocs == 0 |
1505 | && nlnno == 0 | |
1506 | && sec != text_section | |
1507 | && sec != data_section | |
1508 | && sec != bss_section) | |
1509 | return; | |
a5324a3e | 1510 | |
252b5132 | 1511 | secsym = section_symbol (sec); |
945a1a6b ILT |
1512 | /* This is an estimate; we'll plug in the real value using |
1513 | SET_SECTION_RELOCS later */ | |
252b5132 RH |
1514 | SA_SET_SCN_NRELOC (secsym, nrelocs); |
1515 | SA_SET_SCN_NLINNO (secsym, nlnno); | |
1516 | } | |
1517 | ||
1518 | void | |
a5324a3e | 1519 | coff_frob_file_after_relocs (void) |
252b5132 | 1520 | { |
a5324a3e | 1521 | bfd_map_over_sections (stdoutput, coff_adjust_section_syms, NULL); |
252b5132 RH |
1522 | } |
1523 | ||
6ff96af6 NC |
1524 | /* Implement the .section pseudo op: |
1525 | .section name {, "flags"} | |
1526 | ^ ^ | |
1527 | | +--- optional flags: 'b' for bss | |
1528 | | 'i' for info | |
1529 | +-- section name 'l' for lib | |
1530 | 'n' for noload | |
1531 | 'o' for over | |
1532 | 'w' for data | |
1533 | 'd' (apparently m88k for data) | |
c3489828 | 1534 | 'e' for exclude |
6ff96af6 NC |
1535 | 'x' for text |
1536 | 'r' for read-only data | |
1537 | 's' for shared data (PE) | |
63ad59ae | 1538 | 'y' for noread |
31907d5e | 1539 | '0' - '9' for power-of-two alignment (GNU extension). |
6ff96af6 NC |
1540 | But if the argument is not a quoted string, treat it as a |
1541 | subsegment number. | |
1542 | ||
1543 | Note the 'a' flag is silently ignored. This allows the same | |
1544 | .section directive to be parsed in both ELF and COFF formats. */ | |
252b5132 RH |
1545 | |
1546 | void | |
a5324a3e | 1547 | obj_coff_section (int ignore ATTRIBUTE_UNUSED) |
252b5132 | 1548 | { |
a5324a3e | 1549 | /* Strip out the section name. */ |
252b5132 RH |
1550 | char *section_name; |
1551 | char c; | |
31907d5e | 1552 | int alignment = -1; |
252b5132 RH |
1553 | char *name; |
1554 | unsigned int exp; | |
c9900432 | 1555 | flagword flags, oldflags; |
252b5132 RH |
1556 | asection *sec; |
1557 | ||
1558 | if (flag_mri) | |
1559 | { | |
1560 | char type; | |
1561 | ||
1562 | s_mri_sect (&type); | |
1563 | return; | |
1564 | } | |
1565 | ||
1566 | section_name = input_line_pointer; | |
1567 | c = get_symbol_end (); | |
1568 | ||
1569 | name = xmalloc (input_line_pointer - section_name + 1); | |
1570 | strcpy (name, section_name); | |
1571 | ||
1572 | *input_line_pointer = c; | |
1573 | ||
1574 | SKIP_WHITESPACE (); | |
1575 | ||
1576 | exp = 0; | |
c9900432 | 1577 | flags = SEC_NO_FLAGS; |
252b5132 RH |
1578 | |
1579 | if (*input_line_pointer == ',') | |
1580 | { | |
1581 | ++input_line_pointer; | |
1582 | SKIP_WHITESPACE (); | |
1583 | if (*input_line_pointer != '"') | |
1584 | exp = get_absolute_expression (); | |
1585 | else | |
1586 | { | |
422fee64 NC |
1587 | unsigned char attr; |
1588 | int readonly_removed = 0; | |
1589 | int load_removed = 0; | |
1590 | ||
1591 | while (attr = *++input_line_pointer, | |
1592 | attr != '"' | |
1593 | && ! is_end_of_line[attr]) | |
252b5132 | 1594 | { |
31907d5e DK |
1595 | if (ISDIGIT (attr)) |
1596 | { | |
1597 | alignment = attr - '0'; | |
1598 | continue; | |
1599 | } | |
422fee64 | 1600 | switch (attr) |
252b5132 | 1601 | { |
c3489828 KT |
1602 | case 'e': |
1603 | /* Exclude section from linking. */ | |
1604 | flags |= SEC_EXCLUDE; | |
1605 | break; | |
1606 | ||
422fee64 NC |
1607 | case 'b': |
1608 | /* Uninitialised data section. */ | |
1609 | flags |= SEC_ALLOC; | |
1610 | flags &=~ SEC_LOAD; | |
1611 | break; | |
1612 | ||
1613 | case 'n': | |
1614 | /* Section not loaded. */ | |
1615 | flags &=~ SEC_LOAD; | |
1616 | flags |= SEC_NEVER_LOAD; | |
1617 | load_removed = 1; | |
1618 | break; | |
1619 | ||
1620 | case 's': | |
1621 | /* Shared section. */ | |
1622 | flags |= SEC_COFF_SHARED; | |
1623 | /* Fall through. */ | |
1624 | case 'd': | |
1625 | /* Data section. */ | |
1626 | flags |= SEC_DATA; | |
1627 | if (! load_removed) | |
1628 | flags |= SEC_LOAD; | |
1629 | flags &=~ SEC_READONLY; | |
1630 | break; | |
e96c5464 | 1631 | |
422fee64 NC |
1632 | case 'w': |
1633 | /* Writable section. */ | |
1634 | flags &=~ SEC_READONLY; | |
1635 | readonly_removed = 1; | |
1636 | break; | |
e96c5464 | 1637 | |
422fee64 NC |
1638 | case 'a': |
1639 | /* Ignore. Here for compatibility with ELF. */ | |
1640 | break; | |
1641 | ||
1642 | case 'r': /* Read-only section. Implies a data section. */ | |
1643 | readonly_removed = 0; | |
1644 | /* Fall through. */ | |
1645 | case 'x': /* Executable section. */ | |
1646 | /* If we are setting the 'x' attribute or if the 'r' | |
1647 | attribute is being used to restore the readonly status | |
1648 | of a code section (eg "wxr") then set the SEC_CODE flag, | |
1649 | otherwise set the SEC_DATA flag. */ | |
1650 | flags |= (attr == 'x' || (flags & SEC_CODE) ? SEC_CODE : SEC_DATA); | |
1651 | if (! load_removed) | |
1652 | flags |= SEC_LOAD; | |
1653 | /* Note - the READONLY flag is set here, even for the 'x' | |
708587a4 | 1654 | attribute in order to be compatible with the MSVC |
422fee64 NC |
1655 | linker. */ |
1656 | if (! readonly_removed) | |
1657 | flags |= SEC_READONLY; | |
1658 | break; | |
252b5132 | 1659 | |
63ad59ae KT |
1660 | case 'y': |
1661 | flags |= SEC_COFF_NOREAD | SEC_READONLY; | |
1662 | break; | |
1663 | ||
252b5132 RH |
1664 | case 'i': /* STYP_INFO */ |
1665 | case 'l': /* STYP_LIB */ | |
1666 | case 'o': /* STYP_OVER */ | |
422fee64 | 1667 | as_warn (_("unsupported section attribute '%c'"), attr); |
252b5132 RH |
1668 | break; |
1669 | ||
1670 | default: | |
422fee64 | 1671 | as_warn (_("unknown section attribute '%c'"), attr); |
252b5132 RH |
1672 | break; |
1673 | } | |
252b5132 | 1674 | } |
422fee64 | 1675 | if (attr == '"') |
252b5132 RH |
1676 | ++input_line_pointer; |
1677 | } | |
1678 | } | |
1679 | ||
1680 | sec = subseg_new (name, (subsegT) exp); | |
c207c2c6 | 1681 | |
31907d5e DK |
1682 | if (alignment >= 0) |
1683 | sec->alignment_power = alignment; | |
252b5132 | 1684 | |
c9900432 NC |
1685 | oldflags = bfd_get_section_flags (stdoutput, sec); |
1686 | if (oldflags == SEC_NO_FLAGS) | |
252b5132 | 1687 | { |
c9900432 NC |
1688 | /* Set section flags for a new section just created by subseg_new. |
1689 | Provide a default if no flags were parsed. */ | |
1690 | if (flags == SEC_NO_FLAGS) | |
1ad5eac0 | 1691 | flags = TC_COFF_SECTION_DEFAULT_ATTRIBUTES; |
dcd619be | 1692 | |
c9900432 NC |
1693 | #ifdef COFF_LONG_SECTION_NAMES |
1694 | /* Add SEC_LINK_ONCE and SEC_LINK_DUPLICATES_DISCARD to .gnu.linkonce | |
1695 | sections so adjust_reloc_syms in write.c will correctly handle | |
1696 | relocs which refer to non-local symbols in these sections. */ | |
a5324a3e | 1697 | if (strneq (name, ".gnu.linkonce", sizeof (".gnu.linkonce") - 1)) |
cc8a6dd0 | 1698 | flags |= SEC_LINK_ONCE | SEC_LINK_DUPLICATES_DISCARD; |
c9900432 | 1699 | #endif |
252b5132 RH |
1700 | |
1701 | if (! bfd_set_section_flags (stdoutput, sec, flags)) | |
cc8a6dd0 KH |
1702 | as_warn (_("error setting flags for \"%s\": %s"), |
1703 | bfd_section_name (stdoutput, sec), | |
1704 | bfd_errmsg (bfd_get_error ())); | |
c9900432 NC |
1705 | } |
1706 | else if (flags != SEC_NO_FLAGS) | |
1707 | { | |
a5324a3e | 1708 | /* This section's attributes have already been set. Warn if the |
c9900432 | 1709 | attributes don't match. */ |
5dd0794d | 1710 | flagword matchflags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_CODE |
63ad59ae KT |
1711 | | SEC_DATA | SEC_COFF_SHARED | SEC_NEVER_LOAD |
1712 | | SEC_COFF_NOREAD); | |
c9900432 NC |
1713 | if ((flags ^ oldflags) & matchflags) |
1714 | as_warn (_("Ignoring changed section attributes for %s"), name); | |
252b5132 RH |
1715 | } |
1716 | ||
1717 | demand_empty_rest_of_line (); | |
1718 | } | |
1719 | ||
1720 | void | |
a5324a3e | 1721 | coff_adjust_symtab (void) |
252b5132 RH |
1722 | { |
1723 | if (symbol_rootP == NULL | |
1724 | || S_GET_STORAGE_CLASS (symbol_rootP) != C_FILE) | |
a4528eeb | 1725 | c_dot_file_symbol ("fake", 0); |
252b5132 RH |
1726 | } |
1727 | ||
1728 | void | |
a5324a3e | 1729 | coff_frob_section (segT sec) |
252b5132 RH |
1730 | { |
1731 | segT strsec; | |
1732 | char *p; | |
1733 | fragS *fragp; | |
87975d2a | 1734 | bfd_vma n_entries; |
252b5132 RH |
1735 | |
1736 | /* The COFF back end in BFD requires that all section sizes be | |
bea9907b TW |
1737 | rounded up to multiples of the corresponding section alignments, |
1738 | supposedly because standard COFF has no other way of encoding alignment | |
1739 | for sections. If your COFF flavor has a different way of encoding | |
dcd619be | 1740 | section alignment, then skip this step, as TICOFF does. */ |
87975d2a | 1741 | bfd_vma size = bfd_get_section_size (sec); |
bea9907b | 1742 | #if !defined(TICOFF) |
87975d2a AM |
1743 | bfd_vma align_power = (bfd_vma) sec->alignment_power + OCTETS_PER_BYTE_POWER; |
1744 | bfd_vma mask = ((bfd_vma) 1 << align_power) - 1; | |
1745 | ||
252b5132 RH |
1746 | if (size & mask) |
1747 | { | |
7f788821 NC |
1748 | bfd_vma new_size; |
1749 | fragS *last; | |
dcd619be | 1750 | |
7f788821 NC |
1751 | new_size = (size + mask) & ~mask; |
1752 | bfd_set_section_size (stdoutput, sec, new_size); | |
1753 | ||
1754 | /* If the size had to be rounded up, add some padding in | |
1755 | the last non-empty frag. */ | |
1756 | fragp = seg_info (sec)->frchainP->frch_root; | |
1757 | last = seg_info (sec)->frchainP->frch_last; | |
1758 | while (fragp->fr_next != last) | |
cc8a6dd0 | 1759 | fragp = fragp->fr_next; |
7f788821 NC |
1760 | last->fr_address = size; |
1761 | fragp->fr_offset += new_size - size; | |
252b5132 | 1762 | } |
bea9907b | 1763 | #endif |
252b5132 RH |
1764 | |
1765 | /* If the section size is non-zero, the section symbol needs an aux | |
1766 | entry associated with it, indicating the size. We don't know | |
1767 | all the values yet; coff_frob_symbol will fill them in later. */ | |
bea9907b | 1768 | #ifndef TICOFF |
252b5132 RH |
1769 | if (size != 0 |
1770 | || sec == text_section | |
1771 | || sec == data_section | |
1772 | || sec == bss_section) | |
bea9907b | 1773 | #endif |
252b5132 RH |
1774 | { |
1775 | symbolS *secsym = section_symbol (sec); | |
85645aed | 1776 | unsigned char sclass = C_STAT; |
252b5132 | 1777 | |
85645aed TG |
1778 | #ifdef OBJ_XCOFF |
1779 | if (bfd_get_section_flags (stdoutput, sec) & SEC_DEBUGGING) | |
1780 | sclass = C_DWARF; | |
1781 | #endif | |
1782 | S_SET_STORAGE_CLASS (secsym, sclass); | |
252b5132 RH |
1783 | S_SET_NUMBER_AUXILIARY (secsym, 1); |
1784 | SF_SET_STATICS (secsym); | |
1785 | SA_SET_SCN_SCNLEN (secsym, size); | |
1786 | } | |
a5324a3e | 1787 | /* FIXME: These should be in a "stabs.h" file, or maybe as.h. */ |
252b5132 RH |
1788 | #ifndef STAB_SECTION_NAME |
1789 | #define STAB_SECTION_NAME ".stab" | |
1790 | #endif | |
1791 | #ifndef STAB_STRING_SECTION_NAME | |
1792 | #define STAB_STRING_SECTION_NAME ".stabstr" | |
1793 | #endif | |
a5324a3e | 1794 | if (! streq (STAB_STRING_SECTION_NAME, sec->name)) |
252b5132 RH |
1795 | return; |
1796 | ||
1797 | strsec = sec; | |
1798 | sec = subseg_get (STAB_SECTION_NAME, 0); | |
1799 | /* size is already rounded up, since other section will be listed first */ | |
587aac4e | 1800 | size = bfd_get_section_size (strsec); |
252b5132 | 1801 | |
587aac4e | 1802 | n_entries = bfd_get_section_size (sec) / 12 - 1; |
252b5132 RH |
1803 | |
1804 | /* Find first non-empty frag. It should be large enough. */ | |
1805 | fragp = seg_info (sec)->frchainP->frch_root; | |
1806 | while (fragp && fragp->fr_fix == 0) | |
1807 | fragp = fragp->fr_next; | |
9c2799c2 | 1808 | gas_assert (fragp != 0 && fragp->fr_fix >= 12); |
252b5132 RH |
1809 | |
1810 | /* Store the values. */ | |
1811 | p = fragp->fr_literal; | |
1812 | bfd_h_put_16 (stdoutput, n_entries, (bfd_byte *) p + 6); | |
1813 | bfd_h_put_32 (stdoutput, size, (bfd_byte *) p + 8); | |
1814 | } | |
1815 | ||
1816 | void | |
a5324a3e | 1817 | obj_coff_init_stab_section (segT seg) |
252b5132 RH |
1818 | { |
1819 | char *file; | |
1820 | char *p; | |
1821 | char *stabstr_name; | |
1822 | unsigned int stroff; | |
1823 | ||
dcd619be | 1824 | /* Make space for this first symbol. */ |
252b5132 | 1825 | p = frag_more (12); |
dcd619be | 1826 | /* Zero it out. */ |
252b5132 RH |
1827 | memset (p, 0, 12); |
1828 | as_where (&file, (unsigned int *) NULL); | |
a5324a3e | 1829 | stabstr_name = xmalloc (strlen (seg->name) + 4); |
252b5132 RH |
1830 | strcpy (stabstr_name, seg->name); |
1831 | strcat (stabstr_name, "str"); | |
1832 | stroff = get_stab_string_offset (file, stabstr_name); | |
1833 | know (stroff == 1); | |
1834 | md_number_to_chars (p, stroff, 4); | |
1835 | } | |
1836 | ||
1837 | #ifdef DEBUG | |
9ccb8af9 AM |
1838 | const char * s_get_name (symbolS *); |
1839 | ||
252b5132 | 1840 | const char * |
a5324a3e | 1841 | s_get_name (symbolS *s) |
252b5132 RH |
1842 | { |
1843 | return ((s == NULL) ? "(NULL)" : S_GET_NAME (s)); | |
1844 | } | |
1845 | ||
9ccb8af9 AM |
1846 | void symbol_dump (void); |
1847 | ||
252b5132 | 1848 | void |
a5324a3e | 1849 | symbol_dump (void) |
252b5132 RH |
1850 | { |
1851 | symbolS *symbolP; | |
1852 | ||
1853 | for (symbolP = symbol_rootP; symbolP; symbolP = symbol_next (symbolP)) | |
a5324a3e NC |
1854 | printf (_("0x%lx: \"%s\" type = %ld, class = %d, segment = %d\n"), |
1855 | (unsigned long) symbolP, | |
1856 | S_GET_NAME (symbolP), | |
1857 | (long) S_GET_DATA_TYPE (symbolP), | |
1858 | S_GET_STORAGE_CLASS (symbolP), | |
1859 | (int) S_GET_SEGMENT (symbolP)); | |
252b5132 RH |
1860 | } |
1861 | ||
1862 | #endif /* DEBUG */ | |
1863 | ||
7be1c489 | 1864 | const pseudo_typeS coff_pseudo_table[] = |
252b5132 | 1865 | { |
7be1c489 AM |
1866 | {"ABORT", s_abort, 0}, |
1867 | {"appline", obj_coff_ln, 1}, | |
1868 | /* We accept the .bss directive for backward compatibility with | |
1869 | earlier versions of gas. */ | |
1870 | {"bss", obj_coff_bss, 0}, | |
c1711530 DK |
1871 | #ifdef TE_PE |
1872 | /* PE provides an enhanced version of .comm with alignment. */ | |
1873 | {"comm", obj_coff_comm, 0}, | |
1874 | #endif /* TE_PE */ | |
7be1c489 AM |
1875 | {"def", obj_coff_def, 0}, |
1876 | {"dim", obj_coff_dim, 0}, | |
1877 | {"endef", obj_coff_endef, 0}, | |
1878 | {"ident", obj_coff_ident, 0}, | |
1879 | {"line", obj_coff_line, 0}, | |
1880 | {"ln", obj_coff_ln, 0}, | |
1881 | {"scl", obj_coff_scl, 0}, | |
1882 | {"sect", obj_coff_section, 0}, | |
1883 | {"sect.s", obj_coff_section, 0}, | |
1884 | {"section", obj_coff_section, 0}, | |
1885 | {"section.s", obj_coff_section, 0}, | |
1886 | /* FIXME: We ignore the MRI short attribute. */ | |
1887 | {"size", obj_coff_size, 0}, | |
1888 | {"tag", obj_coff_tag, 0}, | |
1889 | {"type", obj_coff_type, 0}, | |
1890 | {"val", obj_coff_val, 0}, | |
1891 | {"version", s_ignore, 0}, | |
1892 | {"loc", obj_coff_loc, 0}, | |
1893 | {"optim", s_ignore, 0}, /* For sun386i cc (?) */ | |
1894 | {"weak", obj_coff_weak, 0}, | |
1895 | #if defined TC_TIC4X | |
1896 | /* The tic4x uses sdef instead of def. */ | |
1897 | {"sdef", obj_coff_def, 0}, | |
f3d2b04b KT |
1898 | #endif |
1899 | #if defined(SEH_CMDS) | |
1900 | SEH_CMDS | |
252b5132 | 1901 | #endif |
7be1c489 AM |
1902 | {NULL, NULL, 0} |
1903 | }; | |
1904 | \f | |
252b5132 | 1905 | |
7be1c489 | 1906 | /* Support for a COFF emulation. */ |
252b5132 RH |
1907 | |
1908 | static void | |
7be1c489 | 1909 | coff_pop_insert (void) |
252b5132 | 1910 | { |
7be1c489 | 1911 | pop_insert (coff_pseudo_table); |
252b5132 RH |
1912 | } |
1913 | ||
a5324a3e | 1914 | static int |
7be1c489 | 1915 | coff_separate_stab_sections (void) |
a5324a3e | 1916 | { |
7be1c489 | 1917 | return 1; |
a5324a3e NC |
1918 | } |
1919 | ||
7be1c489 | 1920 | const struct format_ops coff_format_ops = |
252b5132 RH |
1921 | { |
1922 | bfd_target_coff_flavour, | |
4c63da97 AM |
1923 | 0, /* dfl_leading_underscore */ |
1924 | 1, /* emit_section_symbols */ | |
5110c57e HPN |
1925 | 0, /* begin */ |
1926 | c_dot_file_symbol, | |
252b5132 | 1927 | coff_frob_symbol, |
4c63da97 | 1928 | 0, /* frob_file */ |
339681c0 | 1929 | 0, /* frob_file_before_adjust */ |
a161fe53 | 1930 | 0, /* frob_file_before_fix */ |
252b5132 | 1931 | coff_frob_file_after_relocs, |
4c63da97 AM |
1932 | 0, /* s_get_size */ |
1933 | 0, /* s_set_size */ | |
1934 | 0, /* s_get_align */ | |
1935 | 0, /* s_set_align */ | |
1936 | 0, /* s_get_other */ | |
5110c57e | 1937 | 0, /* s_set_other */ |
4c63da97 | 1938 | 0, /* s_get_desc */ |
5110c57e HPN |
1939 | 0, /* s_set_desc */ |
1940 | 0, /* s_get_type */ | |
1941 | 0, /* s_set_type */ | |
4c63da97 AM |
1942 | 0, /* copy_symbol_attributes */ |
1943 | 0, /* generate_asm_lineno */ | |
1944 | 0, /* process_stab */ | |
5110c57e HPN |
1945 | coff_separate_stab_sections, |
1946 | obj_coff_init_stab_section, | |
4c63da97 | 1947 | 0, /* sec_sym_ok_for_reloc */ |
252b5132 | 1948 | coff_pop_insert, |
4c63da97 | 1949 | 0, /* ecoff_set_ext */ |
252b5132 | 1950 | coff_obj_read_begin_hook, |
4cae74aa | 1951 | coff_obj_symbol_new_hook, |
645ea3ea | 1952 | coff_obj_symbol_clone_hook, |
6309d591 | 1953 | coff_adjust_symtab |
252b5132 | 1954 | }; |