Commit | Line | Data |
---|---|---|
252b5132 | 1 | /* coff object file format |
f7e42eb4 | 2 | Copyright 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, |
87975d2a | 3 | 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2009, 2010 |
252b5132 RH |
4 | Free Software Foundation, Inc. |
5 | ||
6 | This file is part of GAS. | |
7 | ||
8 | GAS is free software; you can redistribute it and/or modify | |
9 | it under the terms of the GNU General Public License as published by | |
ec2655a6 | 10 | the Free Software Foundation; either version 3, or (at your option) |
252b5132 RH |
11 | any later version. |
12 | ||
13 | GAS is distributed in the hope that it will be useful, | |
14 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | GNU General Public License for more details. | |
17 | ||
18 | You should have received a copy of the GNU General Public License | |
19 | along with GAS; see the file COPYING. If not, write to the Free | |
4b4da160 NC |
20 | Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA |
21 | 02110-1301, USA. */ | |
252b5132 RH |
22 | |
23 | #define OBJ_HEADER "obj-coff.h" | |
24 | ||
25 | #include "as.h" | |
31907d5e | 26 | #include "safe-ctype.h" |
252b5132 RH |
27 | #include "obstack.h" |
28 | #include "subsegs.h" | |
29 | ||
977cdf5a NC |
30 | #ifdef TE_PE |
31 | #include "coff/pe.h" | |
32 | #endif | |
33 | ||
85645aed TG |
34 | #ifdef OBJ_XCOFF |
35 | #include "coff/xcoff.h" | |
36 | #endif | |
37 | ||
a5324a3e NC |
38 | #define streq(a,b) (strcmp ((a), (b)) == 0) |
39 | #define strneq(a,b,n) (strncmp ((a), (b), (n)) == 0) | |
40 | ||
252b5132 RH |
41 | /* I think this is probably always correct. */ |
42 | #ifndef KEEP_RELOC_INFO | |
43 | #define KEEP_RELOC_INFO | |
44 | #endif | |
45 | ||
7be1c489 AM |
46 | /* obj_coff_section will use this macro to set a new section's |
47 | attributes when a directive has no valid flags or the "w" flag is | |
48 | used. This default should be appropriate for most. */ | |
b8a9dcab NC |
49 | #ifndef TC_COFF_SECTION_DEFAULT_ATTRIBUTES |
50 | #define TC_COFF_SECTION_DEFAULT_ATTRIBUTES (SEC_LOAD | SEC_DATA) | |
51 | #endif | |
52 | ||
8d28c9d7 AM |
53 | /* This is used to hold the symbol built by a sequence of pseudo-ops |
54 | from .def and .endef. */ | |
55 | static symbolS *def_symbol_in_progress; | |
977cdf5a NC |
56 | #ifdef TE_PE |
57 | /* PE weak alternate symbols begin with this string. */ | |
58 | static const char weak_altprefix[] = ".weak."; | |
59 | #endif /* TE_PE */ | |
8d28c9d7 | 60 | |
f3d2b04b KT |
61 | #include "obj-coff-seh.c" |
62 | ||
8d28c9d7 AM |
63 | typedef struct |
64 | { | |
65 | unsigned long chunk_size; | |
66 | unsigned long element_size; | |
67 | unsigned long size; | |
68 | char *data; | |
69 | unsigned long pointer; | |
70 | } | |
71 | stack; | |
72 | ||
252b5132 | 73 | \f |
a5324a3e | 74 | /* Stack stuff. */ |
252b5132 RH |
75 | |
76 | static stack * | |
a5324a3e NC |
77 | stack_init (unsigned long chunk_size, |
78 | unsigned long element_size) | |
252b5132 RH |
79 | { |
80 | stack *st; | |
81 | ||
a5324a3e | 82 | st = malloc (sizeof (* st)); |
252b5132 | 83 | if (!st) |
a5324a3e | 84 | return NULL; |
252b5132 RH |
85 | st->data = malloc (chunk_size); |
86 | if (!st->data) | |
87 | { | |
88 | free (st); | |
a5324a3e | 89 | return NULL; |
252b5132 RH |
90 | } |
91 | st->pointer = 0; | |
92 | st->size = chunk_size; | |
93 | st->chunk_size = chunk_size; | |
94 | st->element_size = element_size; | |
95 | return st; | |
96 | } | |
97 | ||
252b5132 | 98 | static char * |
a5324a3e | 99 | stack_push (stack *st, char *element) |
252b5132 RH |
100 | { |
101 | if (st->pointer + st->element_size >= st->size) | |
102 | { | |
103 | st->size += st->chunk_size; | |
a5324a3e NC |
104 | if ((st->data = xrealloc (st->data, st->size)) == NULL) |
105 | return NULL; | |
252b5132 RH |
106 | } |
107 | memcpy (st->data + st->pointer, element, st->element_size); | |
108 | st->pointer += st->element_size; | |
109 | return st->data + st->pointer; | |
110 | } | |
111 | ||
112 | static char * | |
a5324a3e | 113 | stack_pop (stack *st) |
252b5132 RH |
114 | { |
115 | if (st->pointer < st->element_size) | |
116 | { | |
117 | st->pointer = 0; | |
a5324a3e | 118 | return NULL; |
252b5132 RH |
119 | } |
120 | st->pointer -= st->element_size; | |
121 | return st->data + st->pointer; | |
122 | } | |
123 | \f | |
a5324a3e | 124 | /* Maintain a list of the tagnames of the structures. */ |
252b5132 RH |
125 | |
126 | static struct hash_control *tag_hash; | |
127 | ||
128 | static void | |
a5324a3e | 129 | tag_init (void) |
252b5132 RH |
130 | { |
131 | tag_hash = hash_new (); | |
132 | } | |
133 | ||
134 | static void | |
a5324a3e | 135 | tag_insert (const char *name, symbolS *symbolP) |
252b5132 RH |
136 | { |
137 | const char *error_string; | |
138 | ||
139 | if ((error_string = hash_jam (tag_hash, name, (char *) symbolP))) | |
a5324a3e NC |
140 | as_fatal (_("Inserting \"%s\" into structure table failed: %s"), |
141 | name, error_string); | |
252b5132 RH |
142 | } |
143 | ||
144 | static symbolS * | |
a5324a3e | 145 | tag_find (char *name) |
252b5132 | 146 | { |
252b5132 RH |
147 | return (symbolS *) hash_find (tag_hash, name); |
148 | } | |
149 | ||
150 | static symbolS * | |
a5324a3e | 151 | tag_find_or_make (char *name) |
252b5132 RH |
152 | { |
153 | symbolS *symbolP; | |
154 | ||
155 | if ((symbolP = tag_find (name)) == NULL) | |
156 | { | |
157 | symbolP = symbol_new (name, undefined_section, | |
158 | 0, &zero_address_frag); | |
159 | ||
160 | tag_insert (S_GET_NAME (symbolP), symbolP); | |
252b5132 | 161 | symbol_table_insert (symbolP); |
a5324a3e | 162 | } |
252b5132 RH |
163 | |
164 | return symbolP; | |
165 | } | |
166 | ||
167 | /* We accept the .bss directive to set the section for backward | |
168 | compatibility with earlier versions of gas. */ | |
169 | ||
170 | static void | |
a5324a3e | 171 | obj_coff_bss (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
172 | { |
173 | if (*input_line_pointer == '\n') | |
174 | subseg_new (".bss", get_absolute_expression ()); | |
175 | else | |
176 | s_lcomm (0); | |
177 | } | |
178 | ||
c1711530 DK |
179 | #ifdef TE_PE |
180 | /* Called from read.c:s_comm after we've parsed .comm symbol, size. | |
181 | Parse a possible alignment value. */ | |
182 | ||
183 | static symbolS * | |
184 | obj_coff_common_parse (int ignore ATTRIBUTE_UNUSED, symbolS *symbolP, addressT size) | |
185 | { | |
186 | addressT align = 0; | |
187 | ||
188 | if (*input_line_pointer == ',') | |
189 | { | |
190 | align = parse_align (0); | |
191 | if (align == (addressT) -1) | |
192 | return NULL; | |
193 | } | |
194 | ||
195 | S_SET_VALUE (symbolP, size); | |
196 | S_SET_EXTERNAL (symbolP); | |
197 | S_SET_SEGMENT (symbolP, bfd_com_section_ptr); | |
198 | ||
199 | symbol_get_bfdsym (symbolP)->flags |= BSF_OBJECT; | |
200 | ||
201 | /* There is no S_SET_ALIGN (symbolP, align) in COFF/PE. | |
202 | Instead we must add a note to the .drectve section. */ | |
203 | if (align) | |
204 | { | |
205 | segT current_seg = now_seg; | |
206 | subsegT current_subseg = now_subseg; | |
207 | flagword oldflags; | |
208 | asection *sec; | |
209 | size_t pfxlen, numlen; | |
210 | char *frag; | |
211 | char numbuff[20]; | |
212 | ||
213 | sec = subseg_new (".drectve", 0); | |
214 | oldflags = bfd_get_section_flags (stdoutput, sec); | |
215 | if (oldflags == SEC_NO_FLAGS) | |
216 | { | |
217 | if (!bfd_set_section_flags (stdoutput, sec, | |
218 | TC_COFF_SECTION_DEFAULT_ATTRIBUTES)) | |
219 | as_warn (_("error setting flags for \"%s\": %s"), | |
220 | bfd_section_name (stdoutput, sec), | |
221 | bfd_errmsg (bfd_get_error ())); | |
222 | } | |
223 | ||
224 | /* Emit a string. Note no NUL-termination. */ | |
a7879ef1 | 225 | pfxlen = strlen (" -aligncomm:") + 2 + strlen (S_GET_NAME (symbolP)) + 1; |
c1711530 DK |
226 | numlen = snprintf (numbuff, sizeof (numbuff), "%d", (int) align); |
227 | frag = frag_more (pfxlen + numlen); | |
a7879ef1 | 228 | (void) sprintf (frag, " -aligncomm:\"%s\",", S_GET_NAME (symbolP)); |
c1711530 DK |
229 | memcpy (frag + pfxlen, numbuff, numlen); |
230 | /* Restore original subseg. */ | |
231 | subseg_set (current_seg, current_subseg); | |
232 | } | |
233 | ||
234 | return symbolP; | |
235 | } | |
236 | ||
237 | static void | |
238 | obj_coff_comm (int ignore ATTRIBUTE_UNUSED) | |
239 | { | |
240 | s_comm_internal (ignore, obj_coff_common_parse); | |
241 | } | |
242 | #endif /* TE_PE */ | |
243 | ||
252b5132 | 244 | #define GET_FILENAME_STRING(X) \ |
a5324a3e | 245 | ((char *) (&((X)->sy_symbol.ost_auxent->x_file.x_n.x_offset))[1]) |
252b5132 RH |
246 | |
247 | /* @@ Ick. */ | |
248 | static segT | |
a5324a3e | 249 | fetch_coff_debug_section (void) |
252b5132 RH |
250 | { |
251 | static segT debug_section; | |
a5324a3e | 252 | |
252b5132 RH |
253 | if (!debug_section) |
254 | { | |
5a38dc70 | 255 | const asymbol *s; |
a5324a3e NC |
256 | |
257 | s = bfd_make_debug_symbol (stdoutput, NULL, 0); | |
9c2799c2 | 258 | gas_assert (s != 0); |
252b5132 RH |
259 | debug_section = s->section; |
260 | } | |
261 | return debug_section; | |
262 | } | |
263 | ||
264 | void | |
a5324a3e | 265 | SA_SET_SYM_ENDNDX (symbolS *sym, symbolS *val) |
252b5132 RH |
266 | { |
267 | combined_entry_type *entry, *p; | |
268 | ||
49309057 ILT |
269 | entry = &coffsymbol (symbol_get_bfdsym (sym))->native[1]; |
270 | p = coffsymbol (symbol_get_bfdsym (val))->native; | |
252b5132 RH |
271 | entry->u.auxent.x_sym.x_fcnary.x_fcn.x_endndx.p = p; |
272 | entry->fix_end = 1; | |
273 | } | |
274 | ||
275 | static void | |
a5324a3e | 276 | SA_SET_SYM_TAGNDX (symbolS *sym, symbolS *val) |
252b5132 RH |
277 | { |
278 | combined_entry_type *entry, *p; | |
279 | ||
49309057 ILT |
280 | entry = &coffsymbol (symbol_get_bfdsym (sym))->native[1]; |
281 | p = coffsymbol (symbol_get_bfdsym (val))->native; | |
252b5132 RH |
282 | entry->u.auxent.x_sym.x_tagndx.p = p; |
283 | entry->fix_tag = 1; | |
284 | } | |
285 | ||
286 | static int | |
a5324a3e | 287 | S_GET_DATA_TYPE (symbolS *sym) |
252b5132 | 288 | { |
49309057 | 289 | return coffsymbol (symbol_get_bfdsym (sym))->native->u.syment.n_type; |
252b5132 RH |
290 | } |
291 | ||
292 | int | |
a5324a3e | 293 | S_SET_DATA_TYPE (symbolS *sym, int val) |
252b5132 | 294 | { |
49309057 | 295 | coffsymbol (symbol_get_bfdsym (sym))->native->u.syment.n_type = val; |
252b5132 RH |
296 | return val; |
297 | } | |
298 | ||
299 | int | |
a5324a3e | 300 | S_GET_STORAGE_CLASS (symbolS *sym) |
252b5132 | 301 | { |
49309057 | 302 | return coffsymbol (symbol_get_bfdsym (sym))->native->u.syment.n_sclass; |
252b5132 RH |
303 | } |
304 | ||
305 | int | |
a5324a3e | 306 | S_SET_STORAGE_CLASS (symbolS *sym, int val) |
252b5132 | 307 | { |
49309057 | 308 | coffsymbol (symbol_get_bfdsym (sym))->native->u.syment.n_sclass = val; |
252b5132 RH |
309 | return val; |
310 | } | |
311 | ||
dcd619be | 312 | /* Merge a debug symbol containing debug information into a normal symbol. */ |
252b5132 | 313 | |
a5324a3e NC |
314 | static void |
315 | c_symbol_merge (symbolS *debug, symbolS *normal) | |
252b5132 RH |
316 | { |
317 | S_SET_DATA_TYPE (normal, S_GET_DATA_TYPE (debug)); | |
318 | S_SET_STORAGE_CLASS (normal, S_GET_STORAGE_CLASS (debug)); | |
319 | ||
320 | if (S_GET_NUMBER_AUXILIARY (debug) > S_GET_NUMBER_AUXILIARY (normal)) | |
a5324a3e NC |
321 | /* Take the most we have. */ |
322 | S_SET_NUMBER_AUXILIARY (normal, S_GET_NUMBER_AUXILIARY (debug)); | |
252b5132 RH |
323 | |
324 | if (S_GET_NUMBER_AUXILIARY (debug) > 0) | |
a5324a3e NC |
325 | /* Move all the auxiliary information. */ |
326 | memcpy (SYM_AUXINFO (normal), SYM_AUXINFO (debug), | |
327 | (S_GET_NUMBER_AUXILIARY (debug) | |
328 | * sizeof (*SYM_AUXINFO (debug)))); | |
252b5132 | 329 | |
dcd619be | 330 | /* Move the debug flags. */ |
252b5132 RH |
331 | SF_SET_DEBUG_FIELD (normal, SF_GET_DEBUG_FIELD (debug)); |
332 | } | |
333 | ||
334 | void | |
a4528eeb | 335 | c_dot_file_symbol (const char *filename, int appfile ATTRIBUTE_UNUSED) |
252b5132 RH |
336 | { |
337 | symbolS *symbolP; | |
338 | ||
0561a208 ILT |
339 | /* BFD converts filename to a .file symbol with an aux entry. It |
340 | also handles chaining. */ | |
252b5132 RH |
341 | symbolP = symbol_new (filename, bfd_abs_section_ptr, 0, &zero_address_frag); |
342 | ||
343 | S_SET_STORAGE_CLASS (symbolP, C_FILE); | |
344 | S_SET_NUMBER_AUXILIARY (symbolP, 1); | |
345 | ||
49309057 | 346 | symbol_get_bfdsym (symbolP)->flags = BSF_DEBUGGING; |
252b5132 RH |
347 | |
348 | #ifndef NO_LISTING | |
349 | { | |
350 | extern int listing; | |
a5324a3e | 351 | |
252b5132 | 352 | if (listing) |
a5324a3e | 353 | listing_source_file (filename); |
252b5132 RH |
354 | } |
355 | #endif | |
356 | ||
a5324a3e | 357 | /* Make sure that the symbol is first on the symbol chain. */ |
252b5132 RH |
358 | if (symbol_rootP != symbolP) |
359 | { | |
360 | symbol_remove (symbolP, &symbol_rootP, &symbol_lastP); | |
361 | symbol_insert (symbolP, symbol_rootP, &symbol_rootP, &symbol_lastP); | |
a5324a3e | 362 | } |
252b5132 RH |
363 | } |
364 | ||
a5324a3e | 365 | /* Line number handling. */ |
252b5132 | 366 | |
a5324a3e NC |
367 | struct line_no |
368 | { | |
252b5132 RH |
369 | struct line_no *next; |
370 | fragS *frag; | |
371 | alent l; | |
372 | }; | |
373 | ||
374 | int coff_line_base; | |
375 | ||
376 | /* Symbol of last function, which we should hang line#s off of. */ | |
377 | static symbolS *line_fsym; | |
378 | ||
379 | #define in_function() (line_fsym != 0) | |
380 | #define clear_function() (line_fsym = 0) | |
381 | #define set_function(F) (line_fsym = (F), coff_add_linesym (F)) | |
382 | ||
383 | \f | |
384 | void | |
a5324a3e | 385 | coff_obj_symbol_new_hook (symbolS *symbolP) |
252b5132 RH |
386 | { |
387 | long sz = (OBJ_COFF_MAX_AUXENTRIES + 1) * sizeof (combined_entry_type); | |
a5324a3e | 388 | char * s = xmalloc (sz); |
dcd619be | 389 | |
252b5132 | 390 | memset (s, 0, sz); |
49309057 | 391 | coffsymbol (symbol_get_bfdsym (symbolP))->native = (combined_entry_type *) s; |
252b5132 RH |
392 | |
393 | S_SET_DATA_TYPE (symbolP, T_NULL); | |
394 | S_SET_STORAGE_CLASS (symbolP, 0); | |
395 | S_SET_NUMBER_AUXILIARY (symbolP, 0); | |
396 | ||
397 | if (S_IS_STRING (symbolP)) | |
398 | SF_SET_STRING (symbolP); | |
dcd619be | 399 | |
252b5132 RH |
400 | if (S_IS_LOCAL (symbolP)) |
401 | SF_SET_LOCAL (symbolP); | |
402 | } | |
403 | ||
6a2b6326 JB |
404 | void |
405 | coff_obj_symbol_clone_hook (symbolS *newsymP, symbolS *orgsymP) | |
406 | { | |
407 | long sz = (OBJ_COFF_MAX_AUXENTRIES + 1) * sizeof (combined_entry_type); | |
408 | combined_entry_type * s = xmalloc (sz); | |
409 | ||
410 | memcpy (s, coffsymbol (symbol_get_bfdsym (orgsymP))->native, sz); | |
411 | coffsymbol (symbol_get_bfdsym (newsymP))->native = s; | |
412 | ||
413 | SF_SET (newsymP, SF_GET (orgsymP)); | |
414 | } | |
415 | ||
252b5132 | 416 | \f |
a5324a3e | 417 | /* Handle .ln directives. */ |
252b5132 RH |
418 | |
419 | static symbolS *current_lineno_sym; | |
420 | static struct line_no *line_nos; | |
a5324a3e | 421 | /* FIXME: Blindly assume all .ln directives will be in the .text section. */ |
252b5132 RH |
422 | int coff_n_line_nos; |
423 | ||
424 | static void | |
a5324a3e | 425 | add_lineno (fragS * frag, addressT offset, int num) |
252b5132 | 426 | { |
a5324a3e NC |
427 | struct line_no * new_line = xmalloc (sizeof (* new_line)); |
428 | ||
252b5132 | 429 | if (!current_lineno_sym) |
a5324a3e | 430 | abort (); |
6877bb43 TR |
431 | |
432 | #ifndef OBJ_XCOFF | |
a5324a3e | 433 | /* The native aix assembler accepts negative line number. */ |
6877bb43 | 434 | |
dcd619be | 435 | if (num <= 0) |
e8a3ab75 ILT |
436 | { |
437 | /* Zero is used as an end marker in the file. */ | |
b985eaa8 ILT |
438 | as_warn (_("Line numbers must be positive integers\n")); |
439 | num = 1; | |
e8a3ab75 | 440 | } |
6877bb43 | 441 | #endif /* OBJ_XCOFF */ |
252b5132 RH |
442 | new_line->next = line_nos; |
443 | new_line->frag = frag; | |
444 | new_line->l.line_number = num; | |
445 | new_line->l.u.offset = offset; | |
446 | line_nos = new_line; | |
447 | coff_n_line_nos++; | |
448 | } | |
449 | ||
450 | void | |
a5324a3e | 451 | coff_add_linesym (symbolS *sym) |
252b5132 RH |
452 | { |
453 | if (line_nos) | |
454 | { | |
49309057 ILT |
455 | coffsymbol (symbol_get_bfdsym (current_lineno_sym))->lineno = |
456 | (alent *) line_nos; | |
252b5132 RH |
457 | coff_n_line_nos++; |
458 | line_nos = 0; | |
459 | } | |
460 | current_lineno_sym = sym; | |
461 | } | |
462 | ||
463 | static void | |
a5324a3e | 464 | obj_coff_ln (int appline) |
252b5132 RH |
465 | { |
466 | int l; | |
467 | ||
468 | if (! appline && def_symbol_in_progress != NULL) | |
469 | { | |
470 | as_warn (_(".ln pseudo-op inside .def/.endef: ignored.")); | |
471 | demand_empty_rest_of_line (); | |
472 | return; | |
473 | } | |
474 | ||
475 | l = get_absolute_expression (); | |
252b5132 | 476 | |
e237d851 NC |
477 | /* If there is no lineno symbol, treat a .ln |
478 | directive as if it were a .appline directive. */ | |
479 | if (appline || current_lineno_sym == NULL) | |
252b5132 | 480 | new_logical_line ((char *) NULL, l - 1); |
e237d851 NC |
481 | else |
482 | add_lineno (frag_now, frag_now_fix (), l); | |
252b5132 RH |
483 | |
484 | #ifndef NO_LISTING | |
485 | { | |
486 | extern int listing; | |
487 | ||
488 | if (listing) | |
489 | { | |
490 | if (! appline) | |
491 | l += coff_line_base - 1; | |
492 | listing_source_line (l); | |
493 | } | |
494 | } | |
495 | #endif | |
496 | ||
497 | demand_empty_rest_of_line (); | |
498 | } | |
499 | ||
28428223 ILT |
500 | /* .loc is essentially the same as .ln; parse it for assembler |
501 | compatibility. */ | |
502 | ||
503 | static void | |
a5324a3e | 504 | obj_coff_loc (int ignore ATTRIBUTE_UNUSED) |
28428223 ILT |
505 | { |
506 | int lineno; | |
507 | ||
508 | /* FIXME: Why do we need this check? We need it for ECOFF, but why | |
509 | do we need it for COFF? */ | |
510 | if (now_seg != text_section) | |
511 | { | |
512 | as_warn (_(".loc outside of .text")); | |
513 | demand_empty_rest_of_line (); | |
514 | return; | |
515 | } | |
516 | ||
517 | if (def_symbol_in_progress != NULL) | |
518 | { | |
519 | as_warn (_(".loc pseudo-op inside .def/.endef: ignored.")); | |
520 | demand_empty_rest_of_line (); | |
521 | return; | |
522 | } | |
523 | ||
524 | /* Skip the file number. */ | |
525 | SKIP_WHITESPACE (); | |
526 | get_absolute_expression (); | |
527 | SKIP_WHITESPACE (); | |
528 | ||
529 | lineno = get_absolute_expression (); | |
530 | ||
531 | #ifndef NO_LISTING | |
532 | { | |
533 | extern int listing; | |
534 | ||
535 | if (listing) | |
536 | { | |
cc8a6dd0 | 537 | lineno += coff_line_base - 1; |
28428223 ILT |
538 | listing_source_line (lineno); |
539 | } | |
540 | } | |
541 | #endif | |
542 | ||
543 | demand_empty_rest_of_line (); | |
544 | ||
545 | add_lineno (frag_now, frag_now_fix (), lineno); | |
546 | } | |
547 | ||
7a6284c4 ILT |
548 | /* Handle the .ident pseudo-op. */ |
549 | ||
550 | static void | |
a5324a3e | 551 | obj_coff_ident (int ignore ATTRIBUTE_UNUSED) |
7a6284c4 ILT |
552 | { |
553 | segT current_seg = now_seg; | |
554 | subsegT current_subseg = now_subseg; | |
555 | ||
556 | #ifdef TE_PE | |
557 | { | |
558 | segT sec; | |
559 | ||
560 | /* We could put it in .comment, but that creates an extra section | |
561 | that shouldn't be loaded into memory, which requires linker | |
562 | changes... For now, until proven otherwise, use .rdata. */ | |
563 | sec = subseg_new (".rdata$zzz", 0); | |
564 | bfd_set_section_flags (stdoutput, sec, | |
565 | ((SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_DATA) | |
566 | & bfd_applicable_section_flags (stdoutput))); | |
567 | } | |
568 | #else | |
569 | subseg_new (".comment", 0); | |
570 | #endif | |
571 | ||
38a57ae7 | 572 | stringer (8 + 1); |
7a6284c4 ILT |
573 | subseg_set (current_seg, current_subseg); |
574 | } | |
575 | ||
a5324a3e NC |
576 | /* Handle .def directives. |
577 | ||
578 | One might ask : why can't we symbol_new if the symbol does not | |
579 | already exist and fill it with debug information. Because of | |
580 | the C_EFCN special symbol. It would clobber the value of the | |
581 | function symbol before we have a chance to notice that it is | |
582 | a C_EFCN. And a second reason is that the code is more clear this | |
583 | way. (at least I think it is :-). */ | |
252b5132 RH |
584 | |
585 | #define SKIP_SEMI_COLON() while (*input_line_pointer++ != ';') | |
586 | #define SKIP_WHITESPACES() while (*input_line_pointer == ' ' || \ | |
a5324a3e NC |
587 | *input_line_pointer == '\t') \ |
588 | input_line_pointer++; | |
252b5132 RH |
589 | |
590 | static void | |
a5324a3e | 591 | obj_coff_def (int what ATTRIBUTE_UNUSED) |
252b5132 | 592 | { |
a5324a3e NC |
593 | char name_end; /* Char after the end of name. */ |
594 | char *symbol_name; /* Name of the debug symbol. */ | |
595 | char *symbol_name_copy; /* Temporary copy of the name. */ | |
252b5132 RH |
596 | unsigned int symbol_name_length; |
597 | ||
598 | if (def_symbol_in_progress != NULL) | |
599 | { | |
600 | as_warn (_(".def pseudo-op used inside of .def/.endef: ignored.")); | |
601 | demand_empty_rest_of_line (); | |
602 | return; | |
a5324a3e | 603 | } |
252b5132 RH |
604 | |
605 | SKIP_WHITESPACES (); | |
606 | ||
607 | symbol_name = input_line_pointer; | |
252b5132 RH |
608 | name_end = get_symbol_end (); |
609 | symbol_name_length = strlen (symbol_name); | |
610 | symbol_name_copy = xmalloc (symbol_name_length + 1); | |
611 | strcpy (symbol_name_copy, symbol_name); | |
612 | #ifdef tc_canonicalize_symbol_name | |
613 | symbol_name_copy = tc_canonicalize_symbol_name (symbol_name_copy); | |
614 | #endif | |
615 | ||
a5324a3e | 616 | /* Initialize the new symbol. */ |
252b5132 | 617 | def_symbol_in_progress = symbol_make (symbol_name_copy); |
49309057 | 618 | symbol_set_frag (def_symbol_in_progress, &zero_address_frag); |
252b5132 RH |
619 | S_SET_VALUE (def_symbol_in_progress, 0); |
620 | ||
621 | if (S_IS_STRING (def_symbol_in_progress)) | |
622 | SF_SET_STRING (def_symbol_in_progress); | |
623 | ||
624 | *input_line_pointer = name_end; | |
625 | ||
626 | demand_empty_rest_of_line (); | |
627 | } | |
628 | ||
252b5132 | 629 | static void |
a5324a3e | 630 | obj_coff_endef (int ignore ATTRIBUTE_UNUSED) |
252b5132 | 631 | { |
c9900432 | 632 | symbolS *symbolP = NULL; |
252b5132 | 633 | |
252b5132 RH |
634 | if (def_symbol_in_progress == NULL) |
635 | { | |
636 | as_warn (_(".endef pseudo-op used outside of .def/.endef: ignored.")); | |
637 | demand_empty_rest_of_line (); | |
638 | return; | |
a5324a3e | 639 | } |
252b5132 | 640 | |
dcd619be | 641 | /* Set the section number according to storage class. */ |
252b5132 RH |
642 | switch (S_GET_STORAGE_CLASS (def_symbol_in_progress)) |
643 | { | |
644 | case C_STRTAG: | |
645 | case C_ENTAG: | |
646 | case C_UNTAG: | |
647 | SF_SET_TAG (def_symbol_in_progress); | |
a5324a3e | 648 | /* Fall through. */ |
252b5132 RH |
649 | case C_FILE: |
650 | case C_TPDEF: | |
651 | SF_SET_DEBUG (def_symbol_in_progress); | |
652 | S_SET_SEGMENT (def_symbol_in_progress, fetch_coff_debug_section ()); | |
653 | break; | |
654 | ||
655 | case C_EFCN: | |
dcd619be | 656 | SF_SET_LOCAL (def_symbol_in_progress); /* Do not emit this symbol. */ |
a5324a3e | 657 | /* Fall through. */ |
252b5132 | 658 | case C_BLOCK: |
a5324a3e NC |
659 | SF_SET_PROCESS (def_symbol_in_progress); /* Will need processing before writing. */ |
660 | /* Fall through. */ | |
252b5132 RH |
661 | case C_FCN: |
662 | { | |
5a38dc70 | 663 | const char *name; |
a5324a3e | 664 | |
252b5132 RH |
665 | S_SET_SEGMENT (def_symbol_in_progress, text_section); |
666 | ||
49309057 | 667 | name = S_GET_NAME (def_symbol_in_progress); |
23dab925 | 668 | if (name[0] == '.' && name[2] == 'f' && name[3] == '\0') |
cc8a6dd0 | 669 | { |
23dab925 ILT |
670 | switch (name[1]) |
671 | { | |
dcd619be | 672 | case 'b': |
23dab925 ILT |
673 | /* .bf */ |
674 | if (! in_function ()) | |
675 | as_warn (_("`%s' symbol without preceding function"), name); | |
676 | /* Will need relocating. */ | |
677 | SF_SET_PROCESS (def_symbol_in_progress); | |
678 | clear_function (); | |
679 | break; | |
680 | #ifdef TE_PE | |
dcd619be | 681 | case 'e': |
23dab925 ILT |
682 | /* .ef */ |
683 | /* The MS compilers output the actual endline, not the | |
684 | function-relative one... we want to match without | |
685 | changing the assembler input. */ | |
dcd619be | 686 | SA_SET_SYM_LNNO (def_symbol_in_progress, |
23dab925 ILT |
687 | (SA_GET_SYM_LNNO (def_symbol_in_progress) |
688 | + coff_line_base)); | |
689 | break; | |
690 | #endif | |
691 | } | |
252b5132 RH |
692 | } |
693 | } | |
694 | break; | |
695 | ||
696 | #ifdef C_AUTOARG | |
697 | case C_AUTOARG: | |
698 | #endif /* C_AUTOARG */ | |
699 | case C_AUTO: | |
700 | case C_REG: | |
701 | case C_ARG: | |
702 | case C_REGPARM: | |
703 | case C_FIELD: | |
56385375 L |
704 | |
705 | /* According to the COFF documentation: | |
706 | ||
707 | http://osr5doc.sco.com:1996/topics/COFF_SectNumFld.html | |
708 | ||
709 | A special section number (-2) marks symbolic debugging symbols, | |
710 | including structure/union/enumeration tag names, typedefs, and | |
dcd619be | 711 | the name of the file. A section number of -1 indicates that the |
56385375 | 712 | symbol has a value but is not relocatable. Examples of |
dcd619be KH |
713 | absolute-valued symbols include automatic and register variables, |
714 | function arguments, and .eos symbols. | |
56385375 L |
715 | |
716 | But from Ian Lance Taylor: | |
717 | ||
718 | http://sources.redhat.com/ml/binutils/2000-08/msg00202.html | |
719 | ||
720 | the actual tools all marked them as section -1. So the GNU COFF | |
721 | assembler follows historical COFF assemblers. | |
722 | ||
723 | However, it causes problems for djgpp | |
724 | ||
725 | http://sources.redhat.com/ml/binutils/2000-08/msg00210.html | |
726 | ||
727 | By defining STRICTCOFF, a COFF port can make the assembler to | |
dcd619be | 728 | follow the documented behavior. */ |
56385375 | 729 | #ifdef STRICTCOFF |
252b5132 RH |
730 | case C_MOS: |
731 | case C_MOE: | |
732 | case C_MOU: | |
733 | case C_EOS: | |
56385375 | 734 | #endif |
d1d8ba22 | 735 | SF_SET_DEBUG (def_symbol_in_progress); |
252b5132 RH |
736 | S_SET_SEGMENT (def_symbol_in_progress, absolute_section); |
737 | break; | |
738 | ||
56385375 L |
739 | #ifndef STRICTCOFF |
740 | case C_MOS: | |
741 | case C_MOE: | |
742 | case C_MOU: | |
743 | case C_EOS: | |
744 | S_SET_SEGMENT (def_symbol_in_progress, absolute_section); | |
745 | break; | |
746 | #endif | |
747 | ||
252b5132 RH |
748 | case C_EXT: |
749 | case C_WEAKEXT: | |
750 | #ifdef TE_PE | |
751 | case C_NT_WEAK: | |
752 | #endif | |
753 | case C_STAT: | |
754 | case C_LABEL: | |
a5324a3e | 755 | /* Valid but set somewhere else (s_comm, s_lcomm, colon). */ |
252b5132 RH |
756 | break; |
757 | ||
758 | default: | |
759 | case C_USTATIC: | |
760 | case C_EXTDEF: | |
761 | case C_ULABEL: | |
762 | as_warn (_("unexpected storage class %d"), | |
763 | S_GET_STORAGE_CLASS (def_symbol_in_progress)); | |
764 | break; | |
a5324a3e | 765 | } |
252b5132 RH |
766 | |
767 | /* Now that we have built a debug symbol, try to find if we should | |
768 | merge with an existing symbol or not. If a symbol is C_EFCN or | |
9690c54d ILT |
769 | absolute_section or untagged SEG_DEBUG it never merges. We also |
770 | don't merge labels, which are in a different namespace, nor | |
771 | symbols which have not yet been defined since they are typically | |
772 | unique, nor do we merge tags with non-tags. */ | |
252b5132 RH |
773 | |
774 | /* Two cases for functions. Either debug followed by definition or | |
775 | definition followed by debug. For definition first, we will | |
776 | merge the debug symbol into the definition. For debug first, the | |
777 | lineno entry MUST point to the definition function or else it | |
778 | will point off into space when obj_crawl_symbol_chain() merges | |
779 | the debug symbol into the real symbol. Therefor, let's presume | |
dcd619be | 780 | the debug symbol is a real function reference. */ |
252b5132 RH |
781 | |
782 | /* FIXME-SOON If for some reason the definition label/symbol is | |
783 | never seen, this will probably leave an undefined symbol at link | |
dcd619be | 784 | time. */ |
252b5132 RH |
785 | |
786 | if (S_GET_STORAGE_CLASS (def_symbol_in_progress) == C_EFCN | |
9690c54d | 787 | || S_GET_STORAGE_CLASS (def_symbol_in_progress) == C_LABEL |
a5324a3e NC |
788 | || (streq (bfd_get_section_name (stdoutput, |
789 | S_GET_SEGMENT (def_symbol_in_progress)), | |
790 | "*DEBUG*") | |
252b5132 RH |
791 | && !SF_GET_TAG (def_symbol_in_progress)) |
792 | || S_GET_SEGMENT (def_symbol_in_progress) == absolute_section | |
9690c54d | 793 | || ! symbol_constant_p (def_symbol_in_progress) |
91c4c449 | 794 | || (symbolP = symbol_find (S_GET_NAME (def_symbol_in_progress))) == NULL |
9690c54d | 795 | || SF_GET_TAG (def_symbol_in_progress) != SF_GET_TAG (symbolP)) |
252b5132 | 796 | { |
9690c54d | 797 | /* If it already is at the end of the symbol list, do nothing */ |
252b5132 | 798 | if (def_symbol_in_progress != symbol_lastP) |
cc8a6dd0 | 799 | { |
9690c54d ILT |
800 | symbol_remove (def_symbol_in_progress, &symbol_rootP, &symbol_lastP); |
801 | symbol_append (def_symbol_in_progress, symbol_lastP, &symbol_rootP, | |
802 | &symbol_lastP); | |
cc8a6dd0 | 803 | } |
252b5132 RH |
804 | } |
805 | else | |
806 | { | |
807 | /* This symbol already exists, merge the newly created symbol | |
808 | into the old one. This is not mandatory. The linker can | |
809 | handle duplicate symbols correctly. But I guess that it save | |
810 | a *lot* of space if the assembly file defines a lot of | |
a5324a3e | 811 | symbols. [loic] */ |
252b5132 RH |
812 | |
813 | /* The debug entry (def_symbol_in_progress) is merged into the | |
dcd619be | 814 | previous definition. */ |
252b5132 RH |
815 | |
816 | c_symbol_merge (def_symbol_in_progress, symbolP); | |
817 | symbol_remove (def_symbol_in_progress, &symbol_rootP, &symbol_lastP); | |
818 | ||
819 | def_symbol_in_progress = symbolP; | |
820 | ||
821 | if (SF_GET_FUNCTION (def_symbol_in_progress) | |
822 | || SF_GET_TAG (def_symbol_in_progress) | |
823 | || S_GET_STORAGE_CLASS (def_symbol_in_progress) == C_STAT) | |
824 | { | |
825 | /* For functions, and tags, and static symbols, the symbol | |
826 | *must* be where the debug symbol appears. Move the | |
dcd619be | 827 | existing symbol to the current place. */ |
a5324a3e | 828 | /* If it already is at the end of the symbol list, do nothing. */ |
252b5132 RH |
829 | if (def_symbol_in_progress != symbol_lastP) |
830 | { | |
831 | symbol_remove (def_symbol_in_progress, &symbol_rootP, &symbol_lastP); | |
832 | symbol_append (def_symbol_in_progress, symbol_lastP, &symbol_rootP, &symbol_lastP); | |
833 | } | |
834 | } | |
835 | } | |
836 | ||
837 | if (SF_GET_TAG (def_symbol_in_progress)) | |
838 | { | |
839 | symbolS *oldtag; | |
840 | ||
91c4c449 | 841 | oldtag = symbol_find (S_GET_NAME (def_symbol_in_progress)); |
252b5132 RH |
842 | if (oldtag == NULL || ! SF_GET_TAG (oldtag)) |
843 | tag_insert (S_GET_NAME (def_symbol_in_progress), | |
844 | def_symbol_in_progress); | |
845 | } | |
846 | ||
847 | if (SF_GET_FUNCTION (def_symbol_in_progress)) | |
848 | { | |
252b5132 RH |
849 | set_function (def_symbol_in_progress); |
850 | SF_SET_PROCESS (def_symbol_in_progress); | |
851 | ||
852 | if (symbolP == NULL) | |
a5324a3e NC |
853 | /* That is, if this is the first time we've seen the |
854 | function. */ | |
855 | symbol_table_insert (def_symbol_in_progress); | |
856 | ||
857 | } | |
252b5132 RH |
858 | |
859 | def_symbol_in_progress = NULL; | |
860 | demand_empty_rest_of_line (); | |
861 | } | |
862 | ||
863 | static void | |
a5324a3e | 864 | obj_coff_dim (int ignore ATTRIBUTE_UNUSED) |
252b5132 | 865 | { |
91d6fa6a | 866 | int d_index; |
252b5132 RH |
867 | |
868 | if (def_symbol_in_progress == NULL) | |
869 | { | |
870 | as_warn (_(".dim pseudo-op used outside of .def/.endef: ignored.")); | |
871 | demand_empty_rest_of_line (); | |
872 | return; | |
a5324a3e | 873 | } |
252b5132 RH |
874 | |
875 | S_SET_NUMBER_AUXILIARY (def_symbol_in_progress, 1); | |
876 | ||
91d6fa6a | 877 | for (d_index = 0; d_index < DIMNUM; d_index++) |
252b5132 RH |
878 | { |
879 | SKIP_WHITESPACES (); | |
91d6fa6a | 880 | SA_SET_SYM_DIMEN (def_symbol_in_progress, d_index, |
252b5132 RH |
881 | get_absolute_expression ()); |
882 | ||
883 | switch (*input_line_pointer) | |
884 | { | |
885 | case ',': | |
886 | input_line_pointer++; | |
887 | break; | |
888 | ||
889 | default: | |
890 | as_warn (_("badly formed .dim directive ignored")); | |
a5324a3e | 891 | /* Fall through. */ |
252b5132 RH |
892 | case '\n': |
893 | case ';': | |
91d6fa6a | 894 | d_index = DIMNUM; |
252b5132 RH |
895 | break; |
896 | } | |
897 | } | |
898 | ||
899 | demand_empty_rest_of_line (); | |
900 | } | |
901 | ||
902 | static void | |
a5324a3e | 903 | obj_coff_line (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
904 | { |
905 | int this_base; | |
906 | ||
907 | if (def_symbol_in_progress == NULL) | |
908 | { | |
909 | /* Probably stabs-style line? */ | |
910 | obj_coff_ln (0); | |
911 | return; | |
912 | } | |
913 | ||
914 | this_base = get_absolute_expression (); | |
a5324a3e | 915 | if (streq (".bf", S_GET_NAME (def_symbol_in_progress))) |
252b5132 RH |
916 | coff_line_base = this_base; |
917 | ||
918 | S_SET_NUMBER_AUXILIARY (def_symbol_in_progress, 1); | |
23dab925 | 919 | SA_SET_SYM_LNNO (def_symbol_in_progress, this_base); |
252b5132 RH |
920 | |
921 | demand_empty_rest_of_line (); | |
922 | ||
923 | #ifndef NO_LISTING | |
a5324a3e | 924 | if (streq (".bf", S_GET_NAME (def_symbol_in_progress))) |
252b5132 RH |
925 | { |
926 | extern int listing; | |
927 | ||
928 | if (listing) | |
23dab925 | 929 | listing_source_line ((unsigned int) this_base); |
252b5132 RH |
930 | } |
931 | #endif | |
932 | } | |
933 | ||
934 | static void | |
a5324a3e | 935 | obj_coff_size (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
936 | { |
937 | if (def_symbol_in_progress == NULL) | |
938 | { | |
939 | as_warn (_(".size pseudo-op used outside of .def/.endef ignored.")); | |
940 | demand_empty_rest_of_line (); | |
941 | return; | |
a5324a3e | 942 | } |
252b5132 RH |
943 | |
944 | S_SET_NUMBER_AUXILIARY (def_symbol_in_progress, 1); | |
945 | SA_SET_SYM_SIZE (def_symbol_in_progress, get_absolute_expression ()); | |
946 | demand_empty_rest_of_line (); | |
947 | } | |
948 | ||
949 | static void | |
a5324a3e | 950 | obj_coff_scl (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
951 | { |
952 | if (def_symbol_in_progress == NULL) | |
953 | { | |
954 | as_warn (_(".scl pseudo-op used outside of .def/.endef ignored.")); | |
955 | demand_empty_rest_of_line (); | |
956 | return; | |
a5324a3e | 957 | } |
252b5132 RH |
958 | |
959 | S_SET_STORAGE_CLASS (def_symbol_in_progress, get_absolute_expression ()); | |
960 | demand_empty_rest_of_line (); | |
961 | } | |
962 | ||
963 | static void | |
a5324a3e | 964 | obj_coff_tag (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
965 | { |
966 | char *symbol_name; | |
967 | char name_end; | |
968 | ||
969 | if (def_symbol_in_progress == NULL) | |
970 | { | |
971 | as_warn (_(".tag pseudo-op used outside of .def/.endef ignored.")); | |
972 | demand_empty_rest_of_line (); | |
973 | return; | |
974 | } | |
975 | ||
976 | S_SET_NUMBER_AUXILIARY (def_symbol_in_progress, 1); | |
977 | symbol_name = input_line_pointer; | |
978 | name_end = get_symbol_end (); | |
979 | ||
980 | #ifdef tc_canonicalize_symbol_name | |
981 | symbol_name = tc_canonicalize_symbol_name (symbol_name); | |
982 | #endif | |
983 | ||
984 | /* Assume that the symbol referred to by .tag is always defined. | |
dcd619be | 985 | This was a bad assumption. I've added find_or_make. xoxorich. */ |
252b5132 RH |
986 | SA_SET_SYM_TAGNDX (def_symbol_in_progress, |
987 | tag_find_or_make (symbol_name)); | |
988 | if (SA_GET_SYM_TAGNDX (def_symbol_in_progress) == 0L) | |
a5324a3e | 989 | as_warn (_("tag not found for .tag %s"), symbol_name); |
252b5132 RH |
990 | |
991 | SF_SET_TAGGED (def_symbol_in_progress); | |
992 | *input_line_pointer = name_end; | |
993 | ||
994 | demand_empty_rest_of_line (); | |
995 | } | |
996 | ||
997 | static void | |
a5324a3e | 998 | obj_coff_type (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
999 | { |
1000 | if (def_symbol_in_progress == NULL) | |
1001 | { | |
1002 | as_warn (_(".type pseudo-op used outside of .def/.endef ignored.")); | |
1003 | demand_empty_rest_of_line (); | |
1004 | return; | |
a5324a3e | 1005 | } |
252b5132 RH |
1006 | |
1007 | S_SET_DATA_TYPE (def_symbol_in_progress, get_absolute_expression ()); | |
1008 | ||
1009 | if (ISFCN (S_GET_DATA_TYPE (def_symbol_in_progress)) && | |
1010 | S_GET_STORAGE_CLASS (def_symbol_in_progress) != C_TPDEF) | |
a5324a3e | 1011 | SF_SET_FUNCTION (def_symbol_in_progress); |
252b5132 RH |
1012 | |
1013 | demand_empty_rest_of_line (); | |
1014 | } | |
1015 | ||
1016 | static void | |
a5324a3e | 1017 | obj_coff_val (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
1018 | { |
1019 | if (def_symbol_in_progress == NULL) | |
1020 | { | |
1021 | as_warn (_(".val pseudo-op used outside of .def/.endef ignored.")); | |
1022 | demand_empty_rest_of_line (); | |
1023 | return; | |
a5324a3e | 1024 | } |
252b5132 RH |
1025 | |
1026 | if (is_name_beginner (*input_line_pointer)) | |
1027 | { | |
1028 | char *symbol_name = input_line_pointer; | |
1029 | char name_end = get_symbol_end (); | |
1030 | ||
1031 | #ifdef tc_canonicalize_symbol_name | |
1032 | symbol_name = tc_canonicalize_symbol_name (symbol_name); | |
1033 | #endif | |
a5324a3e | 1034 | if (streq (symbol_name, ".")) |
252b5132 | 1035 | { |
a5324a3e | 1036 | /* If the .val is != from the .def (e.g. statics). */ |
49309057 | 1037 | symbol_set_frag (def_symbol_in_progress, frag_now); |
252b5132 | 1038 | S_SET_VALUE (def_symbol_in_progress, (valueT) frag_now_fix ()); |
252b5132 | 1039 | } |
a5324a3e | 1040 | else if (! streq (S_GET_NAME (def_symbol_in_progress), symbol_name)) |
252b5132 | 1041 | { |
49309057 ILT |
1042 | expressionS exp; |
1043 | ||
1044 | exp.X_op = O_symbol; | |
1045 | exp.X_add_symbol = symbol_find_or_make (symbol_name); | |
1046 | exp.X_op_symbol = NULL; | |
1047 | exp.X_add_number = 0; | |
1048 | symbol_set_value_expression (def_symbol_in_progress, &exp); | |
252b5132 RH |
1049 | |
1050 | /* If the segment is undefined when the forward reference is | |
1051 | resolved, then copy the segment id from the forward | |
1052 | symbol. */ | |
1053 | SF_SET_GET_SEGMENT (def_symbol_in_progress); | |
0561a208 ILT |
1054 | |
1055 | /* FIXME: gcc can generate address expressions here in | |
1056 | unusual cases (search for "obscure" in sdbout.c). We | |
1057 | just ignore the offset here, thus generating incorrect | |
1058 | debugging information. We ignore the rest of the line | |
1059 | just below. */ | |
252b5132 | 1060 | } |
0561a208 | 1061 | /* Otherwise, it is the name of a non debug symbol and its value |
dcd619be | 1062 | will be calculated later. */ |
252b5132 RH |
1063 | *input_line_pointer = name_end; |
1064 | } | |
1065 | else | |
1066 | { | |
1067 | S_SET_VALUE (def_symbol_in_progress, get_absolute_expression ()); | |
a5324a3e | 1068 | } |
252b5132 RH |
1069 | |
1070 | demand_empty_rest_of_line (); | |
1071 | } | |
1072 | ||
977cdf5a NC |
1073 | #ifdef TE_PE |
1074 | ||
1075 | /* Return nonzero if name begins with weak alternate symbol prefix. */ | |
1076 | ||
1077 | static int | |
1078 | weak_is_altname (const char * name) | |
1079 | { | |
a5324a3e | 1080 | return strneq (name, weak_altprefix, sizeof (weak_altprefix) - 1); |
977cdf5a NC |
1081 | } |
1082 | ||
1083 | /* Return the name of the alternate symbol | |
1084 | name corresponding to a weak symbol's name. */ | |
1085 | ||
1086 | static const char * | |
1087 | weak_name2altname (const char * name) | |
1088 | { | |
1089 | char *alt_name; | |
1090 | ||
1091 | alt_name = xmalloc (sizeof (weak_altprefix) + strlen (name)); | |
1092 | strcpy (alt_name, weak_altprefix); | |
1093 | return strcat (alt_name, name); | |
1094 | } | |
1095 | ||
a5324a3e | 1096 | /* Return the name of the weak symbol corresponding to an |
708587a4 | 1097 | alternate symbol. */ |
977cdf5a NC |
1098 | |
1099 | static const char * | |
1100 | weak_altname2name (const char * name) | |
1101 | { | |
9c2799c2 | 1102 | gas_assert (weak_is_altname (name)); |
b851162a | 1103 | return xstrdup (name + 6); |
977cdf5a NC |
1104 | } |
1105 | ||
1106 | /* Make a weak symbol name unique by | |
1107 | appending the name of an external symbol. */ | |
1108 | ||
1109 | static const char * | |
1110 | weak_uniquify (const char * name) | |
1111 | { | |
1112 | char *ret; | |
1113 | const char * unique = ""; | |
1114 | ||
22ba0981 | 1115 | #ifdef TE_PE |
977cdf5a NC |
1116 | if (an_external_name != NULL) |
1117 | unique = an_external_name; | |
1118 | #endif | |
9c2799c2 | 1119 | gas_assert (weak_is_altname (name)); |
977cdf5a | 1120 | |
977cdf5a NC |
1121 | ret = xmalloc (strlen (name) + strlen (unique) + 2); |
1122 | strcpy (ret, name); | |
1123 | strcat (ret, "."); | |
1124 | strcat (ret, unique); | |
1125 | return ret; | |
1126 | } | |
1127 | ||
06e77878 AO |
1128 | void |
1129 | pecoff_obj_set_weak_hook (symbolS *symbolP) | |
1130 | { | |
1131 | symbolS *alternateP; | |
1132 | ||
1133 | /* See _Microsoft Portable Executable and Common Object | |
1134 | File Format Specification_, section 5.5.3. | |
1135 | Create a symbol representing the alternate value. | |
1136 | coff_frob_symbol will set the value of this symbol from | |
1137 | the value of the weak symbol itself. */ | |
1138 | S_SET_STORAGE_CLASS (symbolP, C_NT_WEAK); | |
1139 | S_SET_NUMBER_AUXILIARY (symbolP, 1); | |
1140 | SA_SET_SYM_FSIZE (symbolP, IMAGE_WEAK_EXTERN_SEARCH_NOLIBRARY); | |
1141 | ||
1142 | alternateP = symbol_find_or_make (weak_name2altname (S_GET_NAME (symbolP))); | |
1143 | S_SET_EXTERNAL (alternateP); | |
1144 | S_SET_STORAGE_CLASS (alternateP, C_NT_WEAK); | |
1145 | ||
1146 | SA_SET_SYM_TAGNDX (symbolP, alternateP); | |
1147 | } | |
1148 | ||
1149 | void | |
1150 | pecoff_obj_clear_weak_hook (symbolS *symbolP) | |
1151 | { | |
1152 | symbolS *alternateP; | |
1153 | ||
1154 | S_SET_STORAGE_CLASS (symbolP, 0); | |
1155 | SA_SET_SYM_FSIZE (symbolP, 0); | |
1156 | ||
1157 | alternateP = symbol_find (weak_name2altname (S_GET_NAME (symbolP))); | |
1158 | S_CLEAR_EXTERNAL (alternateP); | |
1159 | } | |
1160 | ||
977cdf5a NC |
1161 | #endif /* TE_PE */ |
1162 | ||
c87db184 | 1163 | /* Handle .weak. This is a GNU extension in formats other than PE. */ |
977cdf5a | 1164 | |
c87db184 | 1165 | static void |
977cdf5a | 1166 | obj_coff_weak (int ignore ATTRIBUTE_UNUSED) |
c87db184 CF |
1167 | { |
1168 | char *name; | |
1169 | int c; | |
1170 | symbolS *symbolP; | |
1171 | ||
1172 | do | |
1173 | { | |
1174 | name = input_line_pointer; | |
1175 | c = get_symbol_end (); | |
1176 | if (*name == 0) | |
1177 | { | |
1178 | as_warn (_("badly formed .weak directive ignored")); | |
1179 | ignore_rest_of_line (); | |
1180 | return; | |
1181 | } | |
977cdf5a | 1182 | c = 0; |
c87db184 CF |
1183 | symbolP = symbol_find_or_make (name); |
1184 | *input_line_pointer = c; | |
1185 | SKIP_WHITESPACE (); | |
c87db184 | 1186 | S_SET_WEAK (symbolP); |
c87db184 | 1187 | |
c87db184 CF |
1188 | if (c == ',') |
1189 | { | |
1190 | input_line_pointer++; | |
1191 | SKIP_WHITESPACE (); | |
1192 | if (*input_line_pointer == '\n') | |
1193 | c = '\n'; | |
1194 | } | |
1195 | ||
1196 | } | |
1197 | while (c == ','); | |
1198 | ||
1199 | demand_empty_rest_of_line (); | |
1200 | } | |
1201 | ||
252b5132 | 1202 | void |
a5324a3e | 1203 | coff_obj_read_begin_hook (void) |
252b5132 | 1204 | { |
dcd619be | 1205 | /* These had better be the same. Usually 18 bytes. */ |
252b5132 RH |
1206 | know (sizeof (SYMENT) == sizeof (AUXENT)); |
1207 | know (SYMESZ == AUXESZ); | |
252b5132 RH |
1208 | tag_init (); |
1209 | } | |
1210 | ||
252b5132 | 1211 | symbolS *coff_last_function; |
17fc154e | 1212 | #ifndef OBJ_XCOFF |
252b5132 | 1213 | static symbolS *coff_last_bf; |
17fc154e | 1214 | #endif |
252b5132 RH |
1215 | |
1216 | void | |
a5324a3e | 1217 | coff_frob_symbol (symbolS *symp, int *punt) |
252b5132 RH |
1218 | { |
1219 | static symbolS *last_tagP; | |
1220 | static stack *block_stack; | |
1221 | static symbolS *set_end; | |
1222 | symbolS *next_set_end = NULL; | |
1223 | ||
1224 | if (symp == &abs_symbol) | |
1225 | { | |
1226 | *punt = 1; | |
1227 | return; | |
1228 | } | |
1229 | ||
1230 | if (current_lineno_sym) | |
a5324a3e | 1231 | coff_add_linesym (NULL); |
252b5132 RH |
1232 | |
1233 | if (!block_stack) | |
1234 | block_stack = stack_init (512, sizeof (symbolS*)); | |
1235 | ||
252b5132 | 1236 | #ifdef TE_PE |
977cdf5a NC |
1237 | if (S_GET_STORAGE_CLASS (symp) == C_NT_WEAK |
1238 | && ! S_IS_WEAK (symp) | |
1239 | && weak_is_altname (S_GET_NAME (symp))) | |
1240 | { | |
1241 | /* This is a weak alternate symbol. All processing of | |
1242 | PECOFFweak symbols is done here, through the alternate. */ | |
06e77878 AO |
1243 | symbolS *weakp = symbol_find_noref (weak_altname2name |
1244 | (S_GET_NAME (symp)), 1); | |
977cdf5a | 1245 | |
9c2799c2 NC |
1246 | gas_assert (weakp); |
1247 | gas_assert (S_GET_NUMBER_AUXILIARY (weakp) == 1); | |
977cdf5a | 1248 | |
06e77878 AO |
1249 | if (! S_IS_WEAK (weakp)) |
1250 | { | |
1251 | /* The symbol was turned from weak to strong. Discard altname. */ | |
1252 | *punt = 1; | |
1253 | return; | |
1254 | } | |
1255 | else if (symbol_equated_p (weakp)) | |
977cdf5a NC |
1256 | { |
1257 | /* The weak symbol has an alternate specified; symp is unneeded. */ | |
1258 | S_SET_STORAGE_CLASS (weakp, C_NT_WEAK); | |
1259 | SA_SET_SYM_TAGNDX (weakp, | |
1260 | symbol_get_value_expression (weakp)->X_add_symbol); | |
1261 | ||
1262 | S_CLEAR_EXTERNAL (symp); | |
1263 | *punt = 1; | |
1264 | return; | |
1265 | } | |
1266 | else | |
1267 | { | |
1268 | /* The weak symbol has been assigned an alternate value. | |
1269 | Copy this value to symp, and set symp as weakp's alternate. */ | |
1270 | if (S_GET_STORAGE_CLASS (weakp) != C_NT_WEAK) | |
1271 | { | |
1272 | S_SET_STORAGE_CLASS (symp, S_GET_STORAGE_CLASS (weakp)); | |
1273 | S_SET_STORAGE_CLASS (weakp, C_NT_WEAK); | |
1274 | } | |
1275 | ||
1276 | if (S_IS_DEFINED (weakp)) | |
1277 | { | |
1278 | /* This is a defined weak symbol. Copy value information | |
1279 | from the weak symbol itself to the alternate symbol. */ | |
1280 | symbol_set_value_expression (symp, | |
1281 | symbol_get_value_expression (weakp)); | |
1282 | symbol_set_frag (symp, symbol_get_frag (weakp)); | |
1283 | S_SET_SEGMENT (symp, S_GET_SEGMENT (weakp)); | |
1284 | } | |
1285 | else | |
1286 | { | |
1287 | /* This is an undefined weak symbol. | |
1288 | Define the alternate symbol to zero. */ | |
1289 | S_SET_VALUE (symp, 0); | |
1290 | S_SET_SEGMENT (symp, absolute_section); | |
1291 | } | |
1292 | ||
1293 | S_SET_NAME (symp, weak_uniquify (S_GET_NAME (symp))); | |
1294 | S_SET_STORAGE_CLASS (symp, C_EXT); | |
1295 | ||
1296 | S_SET_VALUE (weakp, 0); | |
1297 | S_SET_SEGMENT (weakp, undefined_section); | |
1298 | } | |
252b5132 | 1299 | } |
977cdf5a NC |
1300 | #else /* TE_PE */ |
1301 | if (S_IS_WEAK (symp)) | |
1302 | S_SET_STORAGE_CLASS (symp, C_WEAKEXT); | |
1303 | #endif /* TE_PE */ | |
252b5132 RH |
1304 | |
1305 | if (!S_IS_DEFINED (symp) | |
1306 | && !S_IS_WEAK (symp) | |
1307 | && S_GET_STORAGE_CLASS (symp) != C_STAT) | |
1308 | S_SET_STORAGE_CLASS (symp, C_EXT); | |
1309 | ||
1310 | if (!SF_GET_DEBUG (symp)) | |
1311 | { | |
bdbe95c8 NC |
1312 | symbolS * real; |
1313 | ||
252b5132 RH |
1314 | if (!SF_GET_LOCAL (symp) |
1315 | && !SF_GET_STATICS (symp) | |
39da8128 | 1316 | && S_GET_STORAGE_CLASS (symp) != C_LABEL |
a5324a3e | 1317 | && symbol_constant_p (symp) |
06e77878 | 1318 | && (real = symbol_find_noref (S_GET_NAME (symp), 1)) |
bdbe95c8 | 1319 | && S_GET_STORAGE_CLASS (real) == C_NULL |
252b5132 RH |
1320 | && real != symp) |
1321 | { | |
1322 | c_symbol_merge (symp, real); | |
1323 | *punt = 1; | |
39da8128 | 1324 | return; |
252b5132 | 1325 | } |
bdbe95c8 | 1326 | |
5e0d736c | 1327 | if (!S_IS_DEFINED (symp) && !SF_GET_LOCAL (symp)) |
252b5132 | 1328 | { |
9c2799c2 | 1329 | gas_assert (S_GET_VALUE (symp) == 0); |
06e77878 AO |
1330 | if (S_IS_WEAKREFD (symp)) |
1331 | *punt = 1; | |
1332 | else | |
1333 | S_SET_EXTERNAL (symp); | |
5e0d736c DD |
1334 | } |
1335 | else if (S_GET_STORAGE_CLASS (symp) == C_NULL) | |
1336 | { | |
1337 | if (S_GET_SEGMENT (symp) == text_section | |
1338 | && symp != seg_info (text_section)->sym) | |
1339 | S_SET_STORAGE_CLASS (symp, C_LABEL); | |
252b5132 | 1340 | else |
5e0d736c | 1341 | S_SET_STORAGE_CLASS (symp, C_STAT); |
252b5132 | 1342 | } |
bdbe95c8 | 1343 | |
252b5132 RH |
1344 | if (SF_GET_PROCESS (symp)) |
1345 | { | |
1346 | if (S_GET_STORAGE_CLASS (symp) == C_BLOCK) | |
1347 | { | |
a5324a3e | 1348 | if (streq (S_GET_NAME (symp), ".bb")) |
252b5132 RH |
1349 | stack_push (block_stack, (char *) &symp); |
1350 | else | |
1351 | { | |
1352 | symbolS *begin; | |
bdbe95c8 | 1353 | |
252b5132 RH |
1354 | begin = *(symbolS **) stack_pop (block_stack); |
1355 | if (begin == 0) | |
1356 | as_warn (_("mismatched .eb")); | |
1357 | else | |
1358 | next_set_end = begin; | |
1359 | } | |
1360 | } | |
bdbe95c8 | 1361 | |
252b5132 RH |
1362 | if (coff_last_function == 0 && SF_GET_FUNCTION (symp)) |
1363 | { | |
1364 | union internal_auxent *auxp; | |
bdbe95c8 | 1365 | |
252b5132 RH |
1366 | coff_last_function = symp; |
1367 | if (S_GET_NUMBER_AUXILIARY (symp) < 1) | |
1368 | S_SET_NUMBER_AUXILIARY (symp, 1); | |
0561a208 | 1369 | auxp = SYM_AUXENT (symp); |
252b5132 RH |
1370 | memset (auxp->x_sym.x_fcnary.x_ary.x_dimen, 0, |
1371 | sizeof (auxp->x_sym.x_fcnary.x_ary.x_dimen)); | |
1372 | } | |
bdbe95c8 | 1373 | |
252b5132 RH |
1374 | if (S_GET_STORAGE_CLASS (symp) == C_EFCN) |
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) | |
1534 | 'x' for text | |
1535 | 'r' for read-only data | |
1536 | 's' for shared data (PE) | |
63ad59ae | 1537 | 'y' for noread |
31907d5e | 1538 | '0' - '9' for power-of-two alignment (GNU extension). |
6ff96af6 NC |
1539 | But if the argument is not a quoted string, treat it as a |
1540 | subsegment number. | |
1541 | ||
1542 | Note the 'a' flag is silently ignored. This allows the same | |
1543 | .section directive to be parsed in both ELF and COFF formats. */ | |
252b5132 RH |
1544 | |
1545 | void | |
a5324a3e | 1546 | obj_coff_section (int ignore ATTRIBUTE_UNUSED) |
252b5132 | 1547 | { |
a5324a3e | 1548 | /* Strip out the section name. */ |
252b5132 RH |
1549 | char *section_name; |
1550 | char c; | |
31907d5e | 1551 | int alignment = -1; |
252b5132 RH |
1552 | char *name; |
1553 | unsigned int exp; | |
c9900432 | 1554 | flagword flags, oldflags; |
252b5132 RH |
1555 | asection *sec; |
1556 | ||
1557 | if (flag_mri) | |
1558 | { | |
1559 | char type; | |
1560 | ||
1561 | s_mri_sect (&type); | |
1562 | return; | |
1563 | } | |
1564 | ||
1565 | section_name = input_line_pointer; | |
1566 | c = get_symbol_end (); | |
1567 | ||
1568 | name = xmalloc (input_line_pointer - section_name + 1); | |
1569 | strcpy (name, section_name); | |
1570 | ||
1571 | *input_line_pointer = c; | |
1572 | ||
1573 | SKIP_WHITESPACE (); | |
1574 | ||
1575 | exp = 0; | |
c9900432 | 1576 | flags = SEC_NO_FLAGS; |
252b5132 RH |
1577 | |
1578 | if (*input_line_pointer == ',') | |
1579 | { | |
1580 | ++input_line_pointer; | |
1581 | SKIP_WHITESPACE (); | |
1582 | if (*input_line_pointer != '"') | |
1583 | exp = get_absolute_expression (); | |
1584 | else | |
1585 | { | |
422fee64 NC |
1586 | unsigned char attr; |
1587 | int readonly_removed = 0; | |
1588 | int load_removed = 0; | |
1589 | ||
1590 | while (attr = *++input_line_pointer, | |
1591 | attr != '"' | |
1592 | && ! is_end_of_line[attr]) | |
252b5132 | 1593 | { |
31907d5e DK |
1594 | if (ISDIGIT (attr)) |
1595 | { | |
1596 | alignment = attr - '0'; | |
1597 | continue; | |
1598 | } | |
422fee64 | 1599 | switch (attr) |
252b5132 | 1600 | { |
422fee64 NC |
1601 | case 'b': |
1602 | /* Uninitialised data section. */ | |
1603 | flags |= SEC_ALLOC; | |
1604 | flags &=~ SEC_LOAD; | |
1605 | break; | |
1606 | ||
1607 | case 'n': | |
1608 | /* Section not loaded. */ | |
1609 | flags &=~ SEC_LOAD; | |
1610 | flags |= SEC_NEVER_LOAD; | |
1611 | load_removed = 1; | |
1612 | break; | |
1613 | ||
1614 | case 's': | |
1615 | /* Shared section. */ | |
1616 | flags |= SEC_COFF_SHARED; | |
1617 | /* Fall through. */ | |
1618 | case 'd': | |
1619 | /* Data section. */ | |
1620 | flags |= SEC_DATA; | |
1621 | if (! load_removed) | |
1622 | flags |= SEC_LOAD; | |
1623 | flags &=~ SEC_READONLY; | |
1624 | break; | |
e96c5464 | 1625 | |
422fee64 NC |
1626 | case 'w': |
1627 | /* Writable section. */ | |
1628 | flags &=~ SEC_READONLY; | |
1629 | readonly_removed = 1; | |
1630 | break; | |
e96c5464 | 1631 | |
422fee64 NC |
1632 | case 'a': |
1633 | /* Ignore. Here for compatibility with ELF. */ | |
1634 | break; | |
1635 | ||
1636 | case 'r': /* Read-only section. Implies a data section. */ | |
1637 | readonly_removed = 0; | |
1638 | /* Fall through. */ | |
1639 | case 'x': /* Executable section. */ | |
1640 | /* If we are setting the 'x' attribute or if the 'r' | |
1641 | attribute is being used to restore the readonly status | |
1642 | of a code section (eg "wxr") then set the SEC_CODE flag, | |
1643 | otherwise set the SEC_DATA flag. */ | |
1644 | flags |= (attr == 'x' || (flags & SEC_CODE) ? SEC_CODE : SEC_DATA); | |
1645 | if (! load_removed) | |
1646 | flags |= SEC_LOAD; | |
1647 | /* Note - the READONLY flag is set here, even for the 'x' | |
708587a4 | 1648 | attribute in order to be compatible with the MSVC |
422fee64 NC |
1649 | linker. */ |
1650 | if (! readonly_removed) | |
1651 | flags |= SEC_READONLY; | |
1652 | break; | |
252b5132 | 1653 | |
63ad59ae KT |
1654 | case 'y': |
1655 | flags |= SEC_COFF_NOREAD | SEC_READONLY; | |
1656 | break; | |
1657 | ||
252b5132 RH |
1658 | case 'i': /* STYP_INFO */ |
1659 | case 'l': /* STYP_LIB */ | |
1660 | case 'o': /* STYP_OVER */ | |
422fee64 | 1661 | as_warn (_("unsupported section attribute '%c'"), attr); |
252b5132 RH |
1662 | break; |
1663 | ||
1664 | default: | |
422fee64 | 1665 | as_warn (_("unknown section attribute '%c'"), attr); |
252b5132 RH |
1666 | break; |
1667 | } | |
252b5132 | 1668 | } |
422fee64 | 1669 | if (attr == '"') |
252b5132 RH |
1670 | ++input_line_pointer; |
1671 | } | |
1672 | } | |
1673 | ||
1674 | sec = subseg_new (name, (subsegT) exp); | |
31907d5e DK |
1675 | if (alignment >= 0) |
1676 | sec->alignment_power = alignment; | |
252b5132 | 1677 | |
c9900432 NC |
1678 | oldflags = bfd_get_section_flags (stdoutput, sec); |
1679 | if (oldflags == SEC_NO_FLAGS) | |
252b5132 | 1680 | { |
c9900432 NC |
1681 | /* Set section flags for a new section just created by subseg_new. |
1682 | Provide a default if no flags were parsed. */ | |
1683 | if (flags == SEC_NO_FLAGS) | |
1ad5eac0 | 1684 | flags = TC_COFF_SECTION_DEFAULT_ATTRIBUTES; |
dcd619be | 1685 | |
c9900432 NC |
1686 | #ifdef COFF_LONG_SECTION_NAMES |
1687 | /* Add SEC_LINK_ONCE and SEC_LINK_DUPLICATES_DISCARD to .gnu.linkonce | |
1688 | sections so adjust_reloc_syms in write.c will correctly handle | |
1689 | relocs which refer to non-local symbols in these sections. */ | |
a5324a3e | 1690 | if (strneq (name, ".gnu.linkonce", sizeof (".gnu.linkonce") - 1)) |
cc8a6dd0 | 1691 | flags |= SEC_LINK_ONCE | SEC_LINK_DUPLICATES_DISCARD; |
c9900432 | 1692 | #endif |
252b5132 RH |
1693 | |
1694 | if (! bfd_set_section_flags (stdoutput, sec, flags)) | |
cc8a6dd0 KH |
1695 | as_warn (_("error setting flags for \"%s\": %s"), |
1696 | bfd_section_name (stdoutput, sec), | |
1697 | bfd_errmsg (bfd_get_error ())); | |
c9900432 NC |
1698 | } |
1699 | else if (flags != SEC_NO_FLAGS) | |
1700 | { | |
a5324a3e | 1701 | /* This section's attributes have already been set. Warn if the |
c9900432 | 1702 | attributes don't match. */ |
5dd0794d | 1703 | flagword matchflags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_CODE |
63ad59ae KT |
1704 | | SEC_DATA | SEC_COFF_SHARED | SEC_NEVER_LOAD |
1705 | | SEC_COFF_NOREAD); | |
c9900432 NC |
1706 | if ((flags ^ oldflags) & matchflags) |
1707 | as_warn (_("Ignoring changed section attributes for %s"), name); | |
252b5132 RH |
1708 | } |
1709 | ||
1710 | demand_empty_rest_of_line (); | |
1711 | } | |
1712 | ||
1713 | void | |
a5324a3e | 1714 | coff_adjust_symtab (void) |
252b5132 RH |
1715 | { |
1716 | if (symbol_rootP == NULL | |
1717 | || S_GET_STORAGE_CLASS (symbol_rootP) != C_FILE) | |
a4528eeb | 1718 | c_dot_file_symbol ("fake", 0); |
252b5132 RH |
1719 | } |
1720 | ||
1721 | void | |
a5324a3e | 1722 | coff_frob_section (segT sec) |
252b5132 RH |
1723 | { |
1724 | segT strsec; | |
1725 | char *p; | |
1726 | fragS *fragp; | |
87975d2a | 1727 | bfd_vma n_entries; |
252b5132 RH |
1728 | |
1729 | /* The COFF back end in BFD requires that all section sizes be | |
bea9907b TW |
1730 | rounded up to multiples of the corresponding section alignments, |
1731 | supposedly because standard COFF has no other way of encoding alignment | |
1732 | for sections. If your COFF flavor has a different way of encoding | |
dcd619be | 1733 | section alignment, then skip this step, as TICOFF does. */ |
87975d2a | 1734 | bfd_vma size = bfd_get_section_size (sec); |
bea9907b | 1735 | #if !defined(TICOFF) |
87975d2a AM |
1736 | bfd_vma align_power = (bfd_vma) sec->alignment_power + OCTETS_PER_BYTE_POWER; |
1737 | bfd_vma mask = ((bfd_vma) 1 << align_power) - 1; | |
1738 | ||
252b5132 RH |
1739 | if (size & mask) |
1740 | { | |
7f788821 NC |
1741 | bfd_vma new_size; |
1742 | fragS *last; | |
dcd619be | 1743 | |
7f788821 NC |
1744 | new_size = (size + mask) & ~mask; |
1745 | bfd_set_section_size (stdoutput, sec, new_size); | |
1746 | ||
1747 | /* If the size had to be rounded up, add some padding in | |
1748 | the last non-empty frag. */ | |
1749 | fragp = seg_info (sec)->frchainP->frch_root; | |
1750 | last = seg_info (sec)->frchainP->frch_last; | |
1751 | while (fragp->fr_next != last) | |
cc8a6dd0 | 1752 | fragp = fragp->fr_next; |
7f788821 NC |
1753 | last->fr_address = size; |
1754 | fragp->fr_offset += new_size - size; | |
252b5132 | 1755 | } |
bea9907b | 1756 | #endif |
252b5132 RH |
1757 | |
1758 | /* If the section size is non-zero, the section symbol needs an aux | |
1759 | entry associated with it, indicating the size. We don't know | |
1760 | all the values yet; coff_frob_symbol will fill them in later. */ | |
bea9907b | 1761 | #ifndef TICOFF |
252b5132 RH |
1762 | if (size != 0 |
1763 | || sec == text_section | |
1764 | || sec == data_section | |
1765 | || sec == bss_section) | |
bea9907b | 1766 | #endif |
252b5132 RH |
1767 | { |
1768 | symbolS *secsym = section_symbol (sec); | |
85645aed | 1769 | unsigned char sclass = C_STAT; |
252b5132 | 1770 | |
85645aed TG |
1771 | #ifdef OBJ_XCOFF |
1772 | if (bfd_get_section_flags (stdoutput, sec) & SEC_DEBUGGING) | |
1773 | sclass = C_DWARF; | |
1774 | #endif | |
1775 | S_SET_STORAGE_CLASS (secsym, sclass); | |
252b5132 RH |
1776 | S_SET_NUMBER_AUXILIARY (secsym, 1); |
1777 | SF_SET_STATICS (secsym); | |
1778 | SA_SET_SCN_SCNLEN (secsym, size); | |
1779 | } | |
a5324a3e | 1780 | /* FIXME: These should be in a "stabs.h" file, or maybe as.h. */ |
252b5132 RH |
1781 | #ifndef STAB_SECTION_NAME |
1782 | #define STAB_SECTION_NAME ".stab" | |
1783 | #endif | |
1784 | #ifndef STAB_STRING_SECTION_NAME | |
1785 | #define STAB_STRING_SECTION_NAME ".stabstr" | |
1786 | #endif | |
a5324a3e | 1787 | if (! streq (STAB_STRING_SECTION_NAME, sec->name)) |
252b5132 RH |
1788 | return; |
1789 | ||
1790 | strsec = sec; | |
1791 | sec = subseg_get (STAB_SECTION_NAME, 0); | |
1792 | /* size is already rounded up, since other section will be listed first */ | |
587aac4e | 1793 | size = bfd_get_section_size (strsec); |
252b5132 | 1794 | |
587aac4e | 1795 | n_entries = bfd_get_section_size (sec) / 12 - 1; |
252b5132 RH |
1796 | |
1797 | /* Find first non-empty frag. It should be large enough. */ | |
1798 | fragp = seg_info (sec)->frchainP->frch_root; | |
1799 | while (fragp && fragp->fr_fix == 0) | |
1800 | fragp = fragp->fr_next; | |
9c2799c2 | 1801 | gas_assert (fragp != 0 && fragp->fr_fix >= 12); |
252b5132 RH |
1802 | |
1803 | /* Store the values. */ | |
1804 | p = fragp->fr_literal; | |
1805 | bfd_h_put_16 (stdoutput, n_entries, (bfd_byte *) p + 6); | |
1806 | bfd_h_put_32 (stdoutput, size, (bfd_byte *) p + 8); | |
1807 | } | |
1808 | ||
1809 | void | |
a5324a3e | 1810 | obj_coff_init_stab_section (segT seg) |
252b5132 RH |
1811 | { |
1812 | char *file; | |
1813 | char *p; | |
1814 | char *stabstr_name; | |
1815 | unsigned int stroff; | |
1816 | ||
dcd619be | 1817 | /* Make space for this first symbol. */ |
252b5132 | 1818 | p = frag_more (12); |
dcd619be | 1819 | /* Zero it out. */ |
252b5132 RH |
1820 | memset (p, 0, 12); |
1821 | as_where (&file, (unsigned int *) NULL); | |
a5324a3e | 1822 | stabstr_name = xmalloc (strlen (seg->name) + 4); |
252b5132 RH |
1823 | strcpy (stabstr_name, seg->name); |
1824 | strcat (stabstr_name, "str"); | |
1825 | stroff = get_stab_string_offset (file, stabstr_name); | |
1826 | know (stroff == 1); | |
1827 | md_number_to_chars (p, stroff, 4); | |
1828 | } | |
1829 | ||
1830 | #ifdef DEBUG | |
9ccb8af9 AM |
1831 | const char * s_get_name (symbolS *); |
1832 | ||
252b5132 | 1833 | const char * |
a5324a3e | 1834 | s_get_name (symbolS *s) |
252b5132 RH |
1835 | { |
1836 | return ((s == NULL) ? "(NULL)" : S_GET_NAME (s)); | |
1837 | } | |
1838 | ||
9ccb8af9 AM |
1839 | void symbol_dump (void); |
1840 | ||
252b5132 | 1841 | void |
a5324a3e | 1842 | symbol_dump (void) |
252b5132 RH |
1843 | { |
1844 | symbolS *symbolP; | |
1845 | ||
1846 | for (symbolP = symbol_rootP; symbolP; symbolP = symbol_next (symbolP)) | |
a5324a3e NC |
1847 | printf (_("0x%lx: \"%s\" type = %ld, class = %d, segment = %d\n"), |
1848 | (unsigned long) symbolP, | |
1849 | S_GET_NAME (symbolP), | |
1850 | (long) S_GET_DATA_TYPE (symbolP), | |
1851 | S_GET_STORAGE_CLASS (symbolP), | |
1852 | (int) S_GET_SEGMENT (symbolP)); | |
252b5132 RH |
1853 | } |
1854 | ||
1855 | #endif /* DEBUG */ | |
1856 | ||
7be1c489 | 1857 | const pseudo_typeS coff_pseudo_table[] = |
252b5132 | 1858 | { |
7be1c489 AM |
1859 | {"ABORT", s_abort, 0}, |
1860 | {"appline", obj_coff_ln, 1}, | |
1861 | /* We accept the .bss directive for backward compatibility with | |
1862 | earlier versions of gas. */ | |
1863 | {"bss", obj_coff_bss, 0}, | |
c1711530 DK |
1864 | #ifdef TE_PE |
1865 | /* PE provides an enhanced version of .comm with alignment. */ | |
1866 | {"comm", obj_coff_comm, 0}, | |
1867 | #endif /* TE_PE */ | |
7be1c489 AM |
1868 | {"def", obj_coff_def, 0}, |
1869 | {"dim", obj_coff_dim, 0}, | |
1870 | {"endef", obj_coff_endef, 0}, | |
1871 | {"ident", obj_coff_ident, 0}, | |
1872 | {"line", obj_coff_line, 0}, | |
1873 | {"ln", obj_coff_ln, 0}, | |
1874 | {"scl", obj_coff_scl, 0}, | |
1875 | {"sect", obj_coff_section, 0}, | |
1876 | {"sect.s", obj_coff_section, 0}, | |
1877 | {"section", obj_coff_section, 0}, | |
1878 | {"section.s", obj_coff_section, 0}, | |
1879 | /* FIXME: We ignore the MRI short attribute. */ | |
1880 | {"size", obj_coff_size, 0}, | |
1881 | {"tag", obj_coff_tag, 0}, | |
1882 | {"type", obj_coff_type, 0}, | |
1883 | {"val", obj_coff_val, 0}, | |
1884 | {"version", s_ignore, 0}, | |
1885 | {"loc", obj_coff_loc, 0}, | |
1886 | {"optim", s_ignore, 0}, /* For sun386i cc (?) */ | |
1887 | {"weak", obj_coff_weak, 0}, | |
1888 | #if defined TC_TIC4X | |
1889 | /* The tic4x uses sdef instead of def. */ | |
1890 | {"sdef", obj_coff_def, 0}, | |
f3d2b04b KT |
1891 | #endif |
1892 | #if defined(SEH_CMDS) | |
1893 | SEH_CMDS | |
252b5132 | 1894 | #endif |
7be1c489 AM |
1895 | {NULL, NULL, 0} |
1896 | }; | |
1897 | \f | |
252b5132 | 1898 | |
7be1c489 | 1899 | /* Support for a COFF emulation. */ |
252b5132 RH |
1900 | |
1901 | static void | |
7be1c489 | 1902 | coff_pop_insert (void) |
252b5132 | 1903 | { |
7be1c489 | 1904 | pop_insert (coff_pseudo_table); |
252b5132 RH |
1905 | } |
1906 | ||
a5324a3e | 1907 | static int |
7be1c489 | 1908 | coff_separate_stab_sections (void) |
a5324a3e | 1909 | { |
7be1c489 | 1910 | return 1; |
a5324a3e NC |
1911 | } |
1912 | ||
7be1c489 | 1913 | const struct format_ops coff_format_ops = |
252b5132 RH |
1914 | { |
1915 | bfd_target_coff_flavour, | |
4c63da97 AM |
1916 | 0, /* dfl_leading_underscore */ |
1917 | 1, /* emit_section_symbols */ | |
5110c57e HPN |
1918 | 0, /* begin */ |
1919 | c_dot_file_symbol, | |
252b5132 | 1920 | coff_frob_symbol, |
4c63da97 | 1921 | 0, /* frob_file */ |
339681c0 | 1922 | 0, /* frob_file_before_adjust */ |
a161fe53 | 1923 | 0, /* frob_file_before_fix */ |
252b5132 | 1924 | coff_frob_file_after_relocs, |
4c63da97 AM |
1925 | 0, /* s_get_size */ |
1926 | 0, /* s_set_size */ | |
1927 | 0, /* s_get_align */ | |
1928 | 0, /* s_set_align */ | |
1929 | 0, /* s_get_other */ | |
5110c57e | 1930 | 0, /* s_set_other */ |
4c63da97 | 1931 | 0, /* s_get_desc */ |
5110c57e HPN |
1932 | 0, /* s_set_desc */ |
1933 | 0, /* s_get_type */ | |
1934 | 0, /* s_set_type */ | |
4c63da97 AM |
1935 | 0, /* copy_symbol_attributes */ |
1936 | 0, /* generate_asm_lineno */ | |
1937 | 0, /* process_stab */ | |
5110c57e HPN |
1938 | coff_separate_stab_sections, |
1939 | obj_coff_init_stab_section, | |
4c63da97 | 1940 | 0, /* sec_sym_ok_for_reloc */ |
252b5132 | 1941 | coff_pop_insert, |
4c63da97 | 1942 | 0, /* ecoff_set_ext */ |
252b5132 | 1943 | coff_obj_read_begin_hook, |
4cae74aa | 1944 | coff_obj_symbol_new_hook, |
645ea3ea | 1945 | coff_obj_symbol_clone_hook, |
6309d591 | 1946 | coff_adjust_symtab |
252b5132 | 1947 | }; |