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252b5132 | 1 | /* symbols.c -symbol table- |
a2c58332 | 2 | Copyright (C) 1987-2022 Free Software Foundation, Inc. |
252b5132 RH |
3 | |
4 | This file is part of GAS, the GNU Assembler. | |
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 | 20 | |
7c743825 | 21 | /* #define DEBUG_SYMS / * to debug symbol list maintenance. */ |
252b5132 | 22 | |
252b5132 | 23 | #include "as.h" |
3882b010 | 24 | #include "safe-ctype.h" |
252b5132 RH |
25 | #include "obstack.h" /* For "symbols.h" */ |
26 | #include "subsegs.h" | |
2469b3c5 | 27 | #include "write.h" |
49309057 | 28 | |
d8d6da13 | 29 | #include <limits.h> |
d8d6da13 AM |
30 | #ifndef CHAR_BIT |
31 | #define CHAR_BIT 8 | |
32 | #endif | |
33 | ||
8d1015a8 AM |
34 | struct symbol_flags |
35 | { | |
36 | /* Whether the symbol is a local_symbol. */ | |
3c0d9d71 | 37 | unsigned int local_symbol : 1; |
8d1015a8 AM |
38 | |
39 | /* Weather symbol has been written. */ | |
3c0d9d71 | 40 | unsigned int written : 1; |
8d1015a8 AM |
41 | |
42 | /* Whether symbol value has been completely resolved (used during | |
43 | final pass over symbol table). */ | |
3c0d9d71 | 44 | unsigned int resolved : 1; |
8d1015a8 AM |
45 | |
46 | /* Whether the symbol value is currently being resolved (used to | |
47 | detect loops in symbol dependencies). */ | |
3c0d9d71 | 48 | unsigned int resolving : 1; |
8d1015a8 AM |
49 | |
50 | /* Whether the symbol value is used in a reloc. This is used to | |
51 | ensure that symbols used in relocs are written out, even if they | |
52 | are local and would otherwise not be. */ | |
3c0d9d71 | 53 | unsigned int used_in_reloc : 1; |
8d1015a8 AM |
54 | |
55 | /* Whether the symbol is used as an operand or in an expression. | |
56 | NOTE: Not all the backends keep this information accurate; | |
57 | backends which use this bit are responsible for setting it when | |
58 | a symbol is used in backend routines. */ | |
3c0d9d71 | 59 | unsigned int used : 1; |
8d1015a8 AM |
60 | |
61 | /* Whether the symbol can be re-defined. */ | |
3c0d9d71 | 62 | unsigned int volatil : 1; |
8d1015a8 | 63 | |
4afc8894 AM |
64 | /* Whether the symbol is a forward reference, and whether such has |
65 | been determined. */ | |
3c0d9d71 | 66 | unsigned int forward_ref : 1; |
4afc8894 | 67 | unsigned int forward_resolved : 1; |
8d1015a8 AM |
68 | |
69 | /* This is set if the symbol is defined in an MRI common section. | |
70 | We handle such sections as single common symbols, so symbols | |
71 | defined within them must be treated specially by the relocation | |
72 | routines. */ | |
3c0d9d71 | 73 | unsigned int mri_common : 1; |
8d1015a8 AM |
74 | |
75 | /* This is set if the symbol is set with a .weakref directive. */ | |
3c0d9d71 | 76 | unsigned int weakrefr : 1; |
8d1015a8 AM |
77 | |
78 | /* This is set when the symbol is referenced as part of a .weakref | |
79 | directive, but only if the symbol was not in the symbol table | |
80 | before. It is cleared as soon as any direct reference to the | |
81 | symbol is present. */ | |
3c0d9d71 | 82 | unsigned int weakrefd : 1; |
eb09df16 L |
83 | |
84 | /* Whether the symbol has been marked to be removed by a .symver | |
85 | directive. */ | |
86 | unsigned int removed : 1; | |
578c64a4 NC |
87 | |
88 | /* Set when a warning about the symbol containing multibyte characters | |
89 | is generated. */ | |
90 | unsigned int multibyte_warned : 1; | |
8d1015a8 AM |
91 | }; |
92 | ||
93 | /* A pointer in the symbol may point to either a complete symbol | |
3c0d9d71 | 94 | (struct symbol below) or to a local symbol (struct local_symbol |
8d1015a8 | 95 | defined here). The symbol code can detect the case by examining |
2a50b401 | 96 | the first field which is present in both structs. |
8d1015a8 AM |
97 | |
98 | We do this because we ordinarily only need a small amount of | |
99 | information for a local symbol. The symbol table takes up a lot of | |
100 | space, and storing less information for a local symbol can make a | |
101 | big difference in assembler memory usage when assembling a large | |
102 | file. */ | |
103 | ||
104 | struct local_symbol | |
105 | { | |
3c0d9d71 AM |
106 | /* Symbol flags. Only local_symbol and resolved are relevant. */ |
107 | struct symbol_flags flags; | |
8d1015a8 | 108 | |
5014c2d2 AM |
109 | /* Hash value calculated from name. */ |
110 | hashval_t hash; | |
8d1015a8 AM |
111 | |
112 | /* The symbol name. */ | |
3c0d9d71 | 113 | const char *name; |
8d1015a8 | 114 | |
5014c2d2 AM |
115 | /* The symbol frag. */ |
116 | fragS *frag; | |
117 | ||
118 | /* The symbol section. */ | |
119 | asection *section; | |
8d1015a8 AM |
120 | |
121 | /* The value of the symbol. */ | |
3c0d9d71 AM |
122 | valueT value; |
123 | }; | |
8d1015a8 | 124 | |
5014c2d2 AM |
125 | /* The information we keep for a symbol. The symbol table holds |
126 | pointers both to this and to local_symbol structures. The first | |
127 | three fields must be identical to struct local_symbol, and the size | |
128 | should be the same as or smaller than struct local_symbol. | |
129 | Fields that don't fit go to an extension structure. */ | |
3c0d9d71 AM |
130 | |
131 | struct symbol | |
132 | { | |
133 | /* Symbol flags. */ | |
134 | struct symbol_flags flags; | |
135 | ||
5014c2d2 AM |
136 | /* Hash value calculated from name. */ |
137 | hashval_t hash; | |
138 | ||
139 | /* The symbol name. */ | |
140 | const char *name; | |
141 | ||
142 | /* Pointer to the frag this symbol is attached to, if any. | |
143 | Otherwise, NULL. */ | |
144 | fragS *frag; | |
145 | ||
3c0d9d71 AM |
146 | /* BFD symbol */ |
147 | asymbol *bsym; | |
148 | ||
5014c2d2 AM |
149 | /* Extra symbol fields that won't fit. */ |
150 | struct xsymbol *x; | |
151 | }; | |
152 | ||
153 | /* Extra fields to make up a full symbol. */ | |
154 | ||
155 | struct xsymbol | |
156 | { | |
3c0d9d71 AM |
157 | /* The value of the symbol. */ |
158 | expressionS value; | |
159 | ||
160 | /* Forwards and backwards chain pointers. */ | |
161 | struct symbol *next; | |
162 | struct symbol *previous; | |
163 | ||
3c0d9d71 AM |
164 | #ifdef OBJ_SYMFIELD_TYPE |
165 | OBJ_SYMFIELD_TYPE obj; | |
166 | #endif | |
167 | ||
168 | #ifdef TC_SYMFIELD_TYPE | |
169 | TC_SYMFIELD_TYPE tc; | |
8d1015a8 AM |
170 | #endif |
171 | }; | |
172 | ||
5014c2d2 | 173 | typedef union symbol_entry |
d3b740ca | 174 | { |
5014c2d2 AM |
175 | struct local_symbol lsy; |
176 | struct symbol sy; | |
177 | } symbol_entry_t; | |
d3b740ca ML |
178 | |
179 | /* Hash function for a symbol_entry. */ | |
180 | ||
181 | static hashval_t | |
182 | hash_symbol_entry (const void *e) | |
183 | { | |
184 | symbol_entry_t *entry = (symbol_entry_t *) e; | |
5014c2d2 AM |
185 | if (entry->sy.hash == 0) |
186 | entry->sy.hash = htab_hash_string (entry->sy.name); | |
d3b740ca | 187 | |
5014c2d2 | 188 | return entry->sy.hash; |
d3b740ca ML |
189 | } |
190 | ||
191 | /* Equality function for a symbol_entry. */ | |
192 | ||
193 | static int | |
194 | eq_symbol_entry (const void *a, const void *b) | |
195 | { | |
196 | const symbol_entry_t *ea = (const symbol_entry_t *) a; | |
197 | const symbol_entry_t *eb = (const symbol_entry_t *) b; | |
198 | ||
5014c2d2 AM |
199 | return (ea->sy.hash == eb->sy.hash |
200 | && strcmp (ea->sy.name, eb->sy.name) == 0); | |
d3b740ca ML |
201 | } |
202 | ||
203 | static void * | |
5014c2d2 | 204 | symbol_entry_find (htab_t table, const char *name) |
d3b740ca | 205 | { |
5014c2d2 | 206 | hashval_t hash = htab_hash_string (name); |
4afc8894 | 207 | symbol_entry_t needle = { { { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }, |
e37c930f | 208 | hash, name, 0, 0, 0 } }; |
5014c2d2 | 209 | return htab_find_with_hash (table, &needle, hash); |
d3b740ca ML |
210 | } |
211 | ||
212 | ||
252b5132 RH |
213 | /* This is non-zero if symbols are case sensitive, which is the |
214 | default. */ | |
215 | int symbols_case_sensitive = 1; | |
216 | ||
217 | #ifndef WORKING_DOT_WORD | |
218 | extern int new_broken_words; | |
219 | #endif | |
220 | ||
d3b740ca | 221 | static htab_t sy_hash; |
252b5132 | 222 | |
7c743825 | 223 | /* Below are commented in "symbols.h". */ |
252b5132 RH |
224 | symbolS *symbol_rootP; |
225 | symbolS *symbol_lastP; | |
226 | symbolS abs_symbol; | |
5014c2d2 | 227 | struct xsymbol abs_symbol_x; |
4a826962 | 228 | symbolS dot_symbol; |
5014c2d2 | 229 | struct xsymbol dot_symbol_x; |
252b5132 RH |
230 | |
231 | #ifdef DEBUG_SYMS | |
232 | #define debug_verify_symchain verify_symbol_chain | |
233 | #else | |
234 | #define debug_verify_symchain(root, last) ((void) 0) | |
235 | #endif | |
236 | ||
aa257fcd NC |
237 | #define DOLLAR_LABEL_CHAR '\001' |
238 | #define LOCAL_LABEL_CHAR '\002' | |
239 | ||
df58fc94 RS |
240 | #ifndef TC_LABEL_IS_LOCAL |
241 | #define TC_LABEL_IS_LOCAL(name) 0 | |
242 | #endif | |
243 | ||
252b5132 | 244 | struct obstack notes; |
c30081c1 AM |
245 | |
246 | /* Utility functions to allocate and duplicate memory on the notes | |
247 | obstack, each like the corresponding function without "notes_" | |
248 | prefix. All of these exit on an allocation failure. */ | |
249 | ||
250 | void * | |
251 | notes_alloc (size_t size) | |
252 | { | |
253 | return obstack_alloc (¬es, size); | |
254 | } | |
255 | ||
256 | void * | |
257 | notes_calloc (size_t n, size_t size) | |
258 | { | |
259 | size_t amt; | |
260 | void *ret; | |
261 | if (gas_mul_overflow (n, size, &amt)) | |
262 | { | |
263 | obstack_alloc_failed_handler (); | |
264 | abort (); | |
265 | } | |
266 | ret = notes_alloc (amt); | |
267 | memset (ret, 0, amt); | |
268 | return ret; | |
269 | } | |
270 | ||
271 | void * | |
272 | notes_memdup (const void *src, size_t copy_size, size_t alloc_size) | |
273 | { | |
274 | void *ret = obstack_alloc (¬es, alloc_size); | |
275 | memcpy (ret, src, copy_size); | |
276 | if (alloc_size > copy_size) | |
277 | memset ((char *) ret + copy_size, 0, alloc_size - copy_size); | |
278 | return ret; | |
279 | } | |
280 | ||
281 | char * | |
282 | notes_strdup (const char *str) | |
283 | { | |
284 | size_t len = strlen (str) + 1; | |
285 | return notes_memdup (str, len, len); | |
286 | } | |
287 | ||
288 | char * | |
289 | notes_concat (const char *first, ...) | |
290 | { | |
291 | va_list args; | |
292 | const char *str; | |
293 | ||
294 | va_start (args, first); | |
295 | for (str = first; str; str = va_arg (args, const char *)) | |
296 | { | |
297 | size_t size = strlen (str); | |
298 | obstack_grow (¬es, str, size); | |
299 | } | |
300 | va_end (args); | |
301 | obstack_1grow (¬es, 0); | |
302 | return obstack_finish (¬es); | |
303 | } | |
304 | ||
305 | /* Use with caution! Frees PTR and all more recently allocated memory | |
306 | on the notes obstack. */ | |
307 | ||
308 | void | |
309 | notes_free (void *ptr) | |
310 | { | |
311 | obstack_free (¬es, ptr); | |
312 | } | |
313 | ||
22ba0981 | 314 | #ifdef TE_PE |
977cdf5a NC |
315 | /* The name of an external symbol which is |
316 | used to make weak PE symbol names unique. */ | |
317 | const char * an_external_name; | |
318 | #endif | |
252b5132 | 319 | |
7c743825 | 320 | /* Return a pointer to a new symbol. Die if we can't make a new |
252b5132 RH |
321 | symbol. Fill in the symbol's values. Add symbol to end of symbol |
322 | chain. | |
7c743825 | 323 | |
252b5132 RH |
324 | This function should be called in the general case of creating a |
325 | symbol. However, if the output file symbol table has already been | |
326 | set, and you are certain that this symbol won't be wanted in the | |
327 | output file, you can call symbol_create. */ | |
328 | ||
329 | symbolS * | |
e01e1cee | 330 | symbol_new (const char *name, segT segment, fragS *frag, valueT valu) |
252b5132 | 331 | { |
e01e1cee | 332 | symbolS *symbolP = symbol_create (name, segment, frag, valu); |
252b5132 | 333 | |
7c743825 | 334 | /* Link to end of symbol chain. */ |
252b5132 RH |
335 | symbol_append (symbolP, symbol_lastP, &symbol_rootP, &symbol_lastP); |
336 | ||
337 | return symbolP; | |
338 | } | |
339 | ||
49309057 ILT |
340 | /* Save a symbol name on a permanent obstack, and convert it according |
341 | to the object file format. */ | |
342 | ||
b9bb4a93 | 343 | static const char * |
74937d39 | 344 | save_symbol_name (const char *name) |
252b5132 | 345 | { |
49309057 | 346 | char *ret; |
252b5132 | 347 | |
0df8ad28 | 348 | gas_assert (name != NULL); |
c30081c1 | 349 | ret = notes_strdup (name); |
49309057 | 350 | |
252b5132 | 351 | #ifdef tc_canonicalize_symbol_name |
49309057 | 352 | ret = tc_canonicalize_symbol_name (ret); |
252b5132 RH |
353 | #endif |
354 | ||
355 | if (! symbols_case_sensitive) | |
356 | { | |
3882b010 | 357 | char *s; |
252b5132 | 358 | |
3882b010 L |
359 | for (s = ret; *s != '\0'; s++) |
360 | *s = TOUPPER (*s); | |
252b5132 RH |
361 | } |
362 | ||
49309057 ILT |
363 | return ret; |
364 | } | |
365 | ||
5014c2d2 AM |
366 | static void |
367 | symbol_init (symbolS *symbolP, const char *name, asection *sec, | |
368 | fragS *frag, valueT valu) | |
49309057 | 369 | { |
5014c2d2 | 370 | symbolP->frag = frag; |
252b5132 RH |
371 | symbolP->bsym = bfd_make_empty_symbol (stdoutput); |
372 | if (symbolP->bsym == NULL) | |
885afe7b | 373 | as_fatal ("bfd_make_empty_symbol: %s", bfd_errmsg (bfd_get_error ())); |
5014c2d2 AM |
374 | symbolP->bsym->name = name; |
375 | symbolP->bsym->section = sec; | |
252b5132 | 376 | |
578c64a4 NC |
377 | if (multibyte_handling == multibyte_warn_syms |
378 | && ! symbolP->flags.local_symbol | |
379 | && sec != undefined_section | |
380 | && ! symbolP->flags.multibyte_warned | |
381 | && scan_for_multibyte_characters ((const unsigned char *) name, | |
382 | (const unsigned char *) name + strlen (name), | |
383 | false /* Do not warn. */)) | |
384 | { | |
385 | as_warn (_("symbol '%s' contains multibyte characters"), name); | |
386 | symbolP->flags.multibyte_warned = 1; | |
387 | } | |
388 | ||
252b5132 | 389 | S_SET_VALUE (symbolP, valu); |
252b5132 | 390 | |
5014c2d2 | 391 | symbol_clear_list_pointers (symbolP); |
252b5132 RH |
392 | |
393 | obj_symbol_new_hook (symbolP); | |
394 | ||
395 | #ifdef tc_symbol_new_hook | |
396 | tc_symbol_new_hook (symbolP); | |
397 | #endif | |
5014c2d2 AM |
398 | } |
399 | ||
400 | /* Create a symbol. NAME is copied, the caller can destroy/modify. */ | |
401 | ||
402 | symbolS * | |
403 | symbol_create (const char *name, segT segment, fragS *frag, valueT valu) | |
404 | { | |
405 | const char *preserved_copy_of_name; | |
406 | symbolS *symbolP; | |
407 | size_t size; | |
408 | ||
409 | preserved_copy_of_name = save_symbol_name (name); | |
410 | ||
411 | size = sizeof (symbolS) + sizeof (struct xsymbol); | |
c30081c1 | 412 | symbolP = notes_alloc (size); |
5014c2d2 AM |
413 | |
414 | /* symbol must be born in some fixed state. This seems as good as any. */ | |
415 | memset (symbolP, 0, size); | |
416 | symbolP->name = preserved_copy_of_name; | |
417 | symbolP->x = (struct xsymbol *) (symbolP + 1); | |
418 | ||
419 | symbol_init (symbolP, preserved_copy_of_name, segment, frag, valu); | |
252b5132 RH |
420 | |
421 | return symbolP; | |
422 | } | |
423 | \f | |
49309057 ILT |
424 | |
425 | /* Local symbol support. If we can get away with it, we keep only a | |
426 | small amount of information for local symbols. */ | |
427 | ||
49309057 ILT |
428 | /* Used for statistics. */ |
429 | ||
430 | static unsigned long local_symbol_count; | |
431 | static unsigned long local_symbol_conversion_count; | |
432 | ||
49309057 ILT |
433 | /* Create a local symbol and insert it into the local hash table. */ |
434 | ||
00ce9deb | 435 | struct local_symbol * |
e01e1cee | 436 | local_symbol_make (const char *name, segT section, fragS *frag, valueT val) |
49309057 | 437 | { |
b9bb4a93 | 438 | const char *name_copy; |
49309057 | 439 | struct local_symbol *ret; |
3c0d9d71 | 440 | struct symbol_flags flags = { .local_symbol = 1, .resolved = 0 }; |
49309057 ILT |
441 | |
442 | ++local_symbol_count; | |
443 | ||
444 | name_copy = save_symbol_name (name); | |
445 | ||
c30081c1 | 446 | ret = notes_alloc (sizeof *ret); |
3c0d9d71 | 447 | ret->flags = flags; |
5014c2d2 | 448 | ret->hash = 0; |
3c0d9d71 | 449 | ret->name = name_copy; |
5014c2d2 | 450 | ret->frag = frag; |
3c0d9d71 | 451 | ret->section = section; |
3c0d9d71 | 452 | ret->value = val; |
49309057 | 453 | |
fe0e921f | 454 | htab_insert (sy_hash, ret, 1); |
49309057 ILT |
455 | |
456 | return ret; | |
457 | } | |
458 | ||
5014c2d2 | 459 | /* Convert a local symbol into a real symbol. */ |
49309057 ILT |
460 | |
461 | static symbolS * | |
5014c2d2 | 462 | local_symbol_convert (void *sym) |
49309057 | 463 | { |
5014c2d2 AM |
464 | symbol_entry_t *ent = (symbol_entry_t *) sym; |
465 | struct xsymbol *xtra; | |
466 | valueT val; | |
49309057 | 467 | |
5014c2d2 | 468 | gas_assert (ent->lsy.flags.local_symbol); |
49309057 ILT |
469 | |
470 | ++local_symbol_conversion_count; | |
471 | ||
c30081c1 | 472 | xtra = notes_alloc (sizeof (*xtra)); |
85d14aae | 473 | memset (xtra, 0, sizeof (*xtra)); |
5014c2d2 AM |
474 | val = ent->lsy.value; |
475 | ent->sy.x = xtra; | |
49309057 ILT |
476 | |
477 | /* Local symbols are always either defined or used. */ | |
5014c2d2 AM |
478 | ent->sy.flags.used = 1; |
479 | ent->sy.flags.local_symbol = 0; | |
49309057 | 480 | |
5014c2d2 AM |
481 | symbol_init (&ent->sy, ent->lsy.name, ent->lsy.section, ent->lsy.frag, val); |
482 | symbol_append (&ent->sy, symbol_lastP, &symbol_rootP, &symbol_lastP); | |
49309057 | 483 | |
5014c2d2 | 484 | return &ent->sy; |
49309057 | 485 | } |
49309057 | 486 | \f |
a3371076 AM |
487 | static void |
488 | define_sym_at_dot (symbolS *symbolP) | |
489 | { | |
3c0d9d71 | 490 | symbolP->frag = frag_now; |
a3371076 AM |
491 | S_SET_VALUE (symbolP, (valueT) frag_now_fix ()); |
492 | S_SET_SEGMENT (symbolP, now_seg); | |
493 | } | |
494 | ||
7c743825 KH |
495 | /* We have just seen "<name>:". |
496 | Creates a struct symbol unless it already exists. | |
497 | ||
498 | Gripes if we are redefining a symbol incompatibly (and ignores it). */ | |
252b5132 | 499 | |
252b5132 | 500 | symbolS * |
74937d39 | 501 | colon (/* Just seen "x:" - rattle symbols & frags. */ |
2b0f3761 | 502 | const char *sym_name /* Symbol name, as a canonical string. */ |
74937d39 | 503 | /* We copy this string: OK to alter later. */) |
252b5132 | 504 | { |
ed9e98c2 | 505 | symbolS *symbolP; /* Symbol we are working with. */ |
252b5132 | 506 | |
7cf10893 | 507 | /* Sun local labels go out of scope whenever a non-local symbol is |
252b5132 | 508 | defined. */ |
7be1c489 AM |
509 | if (LOCAL_LABELS_DOLLAR |
510 | && !bfd_is_local_label_name (stdoutput, sym_name)) | |
511 | dollar_label_clear (); | |
252b5132 RH |
512 | |
513 | #ifndef WORKING_DOT_WORD | |
514 | if (new_broken_words) | |
515 | { | |
516 | struct broken_word *a; | |
517 | int possible_bytes; | |
518 | fragS *frag_tmp; | |
519 | char *frag_opcode; | |
520 | ||
7cf10893 NC |
521 | if (now_seg == absolute_section) |
522 | { | |
523 | as_bad (_("cannot define symbol `%s' in absolute section"), sym_name); | |
524 | return NULL; | |
525 | } | |
1d3b2b27 | 526 | |
252b5132 RH |
527 | possible_bytes = (md_short_jump_size |
528 | + new_broken_words * md_long_jump_size); | |
529 | ||
530 | frag_tmp = frag_now; | |
531 | frag_opcode = frag_var (rs_broken_word, | |
532 | possible_bytes, | |
533 | possible_bytes, | |
534 | (relax_substateT) 0, | |
535 | (symbolS *) broken_words, | |
536 | (offsetT) 0, | |
537 | NULL); | |
538 | ||
7c743825 KH |
539 | /* We want to store the pointer to where to insert the jump |
540 | table in the fr_opcode of the rs_broken_word frag. This | |
541 | requires a little hackery. */ | |
252b5132 RH |
542 | while (frag_tmp |
543 | && (frag_tmp->fr_type != rs_broken_word | |
544 | || frag_tmp->fr_opcode)) | |
545 | frag_tmp = frag_tmp->fr_next; | |
546 | know (frag_tmp); | |
547 | frag_tmp->fr_opcode = frag_opcode; | |
548 | new_broken_words = 0; | |
549 | ||
550 | for (a = broken_words; a && a->dispfrag == 0; a = a->next_broken_word) | |
551 | a->dispfrag = frag_tmp; | |
552 | } | |
553 | #endif /* WORKING_DOT_WORD */ | |
554 | ||
cdaa5616 IS |
555 | #ifdef obj_frob_colon |
556 | obj_frob_colon (sym_name); | |
557 | #endif | |
558 | ||
252b5132 RH |
559 | if ((symbolP = symbol_find (sym_name)) != 0) |
560 | { | |
06e77878 | 561 | S_CLEAR_WEAKREFR (symbolP); |
252b5132 RH |
562 | #ifdef RESOLVE_SYMBOL_REDEFINITION |
563 | if (RESOLVE_SYMBOL_REDEFINITION (symbolP)) | |
564 | return symbolP; | |
565 | #endif | |
7c743825 | 566 | /* Now check for undefined symbols. */ |
5014c2d2 | 567 | if (symbolP->flags.local_symbol) |
49309057 ILT |
568 | { |
569 | struct local_symbol *locsym = (struct local_symbol *) symbolP; | |
570 | ||
3c0d9d71 | 571 | if (locsym->section != undefined_section |
5014c2d2 | 572 | && (locsym->frag != frag_now |
3c0d9d71 AM |
573 | || locsym->section != now_seg |
574 | || locsym->value != frag_now_fix ())) | |
49309057 | 575 | { |
0e389e77 | 576 | as_bad (_("symbol `%s' is already defined"), sym_name); |
49309057 ILT |
577 | return symbolP; |
578 | } | |
579 | ||
3c0d9d71 | 580 | locsym->section = now_seg; |
5014c2d2 | 581 | locsym->frag = frag_now; |
3c0d9d71 | 582 | locsym->value = frag_now_fix (); |
49309057 | 583 | } |
b54788f8 | 584 | else if (!(S_IS_DEFINED (symbolP) || symbol_equated_p (symbolP)) |
92757bc9 JB |
585 | || S_IS_COMMON (symbolP) |
586 | || S_IS_VOLATILE (symbolP)) | |
252b5132 | 587 | { |
89cdfe57 | 588 | if (S_IS_VOLATILE (symbolP)) |
92757bc9 JB |
589 | { |
590 | symbolP = symbol_clone (symbolP, 1); | |
591 | S_SET_VALUE (symbolP, 0); | |
592 | S_CLEAR_VOLATILE (symbolP); | |
593 | } | |
252b5132 RH |
594 | if (S_GET_VALUE (symbolP) == 0) |
595 | { | |
a3371076 | 596 | define_sym_at_dot (symbolP); |
252b5132 RH |
597 | #ifdef N_UNDF |
598 | know (N_UNDF == 0); | |
7c743825 | 599 | #endif /* if we have one, it better be zero. */ |
252b5132 RH |
600 | |
601 | } | |
602 | else | |
603 | { | |
7c743825 KH |
604 | /* There are still several cases to check: |
605 | ||
606 | A .comm/.lcomm symbol being redefined as initialized | |
607 | data is OK | |
608 | ||
609 | A .comm/.lcomm symbol being redefined with a larger | |
610 | size is also OK | |
611 | ||
612 | This only used to be allowed on VMS gas, but Sun cc | |
613 | on the sparc also depends on it. */ | |
252b5132 RH |
614 | |
615 | if (((!S_IS_DEBUG (symbolP) | |
616 | && (!S_IS_DEFINED (symbolP) || S_IS_COMMON (symbolP)) | |
617 | && S_IS_EXTERNAL (symbolP)) | |
618 | || S_GET_SEGMENT (symbolP) == bss_section) | |
619 | && (now_seg == data_section | |
b3ce1bf7 | 620 | || now_seg == bss_section |
252b5132 RH |
621 | || now_seg == S_GET_SEGMENT (symbolP))) |
622 | { | |
7c743825 | 623 | /* Select which of the 2 cases this is. */ |
252b5132 RH |
624 | if (now_seg != data_section) |
625 | { | |
7c743825 KH |
626 | /* New .comm for prev .comm symbol. |
627 | ||
628 | If the new size is larger we just change its | |
629 | value. If the new size is smaller, we ignore | |
630 | this symbol. */ | |
252b5132 RH |
631 | if (S_GET_VALUE (symbolP) |
632 | < ((unsigned) frag_now_fix ())) | |
633 | { | |
634 | S_SET_VALUE (symbolP, (valueT) frag_now_fix ()); | |
635 | } | |
636 | } | |
637 | else | |
638 | { | |
639 | /* It is a .comm/.lcomm being converted to initialized | |
640 | data. */ | |
a3371076 | 641 | define_sym_at_dot (symbolP); |
252b5132 RH |
642 | } |
643 | } | |
644 | else | |
645 | { | |
a8eb42a8 | 646 | #if (!defined (OBJ_AOUT) && !defined (OBJ_MAYBE_AOUT)) |
4c63da97 | 647 | static const char *od_buf = ""; |
252b5132 | 648 | #else |
4c63da97 AM |
649 | char od_buf[100]; |
650 | od_buf[0] = '\0'; | |
4c63da97 | 651 | if (OUTPUT_FLAVOR == bfd_target_aout_flavour) |
d1a6c242 KH |
652 | sprintf (od_buf, "%d.%d.", |
653 | S_GET_OTHER (symbolP), | |
654 | S_GET_DESC (symbolP)); | |
4c63da97 | 655 | #endif |
0e389e77 | 656 | as_bad (_("symbol `%s' is already defined as \"%s\"/%s%ld"), |
252b5132 RH |
657 | sym_name, |
658 | segment_name (S_GET_SEGMENT (symbolP)), | |
4c63da97 | 659 | od_buf, |
252b5132 | 660 | (long) S_GET_VALUE (symbolP)); |
252b5132 | 661 | } |
7c743825 | 662 | } /* if the undefined symbol has no value */ |
252b5132 RH |
663 | } |
664 | else | |
665 | { | |
7c743825 | 666 | /* Don't blow up if the definition is the same. */ |
3c0d9d71 | 667 | if (!(frag_now == symbolP->frag |
252b5132 RH |
668 | && S_GET_VALUE (symbolP) == frag_now_fix () |
669 | && S_GET_SEGMENT (symbolP) == now_seg)) | |
92757bc9 JB |
670 | { |
671 | as_bad (_("symbol `%s' is already defined"), sym_name); | |
672 | symbolP = symbol_clone (symbolP, 0); | |
a3371076 | 673 | define_sym_at_dot (symbolP); |
92757bc9 | 674 | } |
d4887adc | 675 | } |
252b5132 RH |
676 | |
677 | } | |
49309057 ILT |
678 | else if (! flag_keep_locals && bfd_is_local_label_name (stdoutput, sym_name)) |
679 | { | |
e01e1cee AM |
680 | symbolP = (symbolS *) local_symbol_make (sym_name, now_seg, frag_now, |
681 | frag_now_fix ()); | |
49309057 | 682 | } |
252b5132 RH |
683 | else |
684 | { | |
e01e1cee | 685 | symbolP = symbol_new (sym_name, now_seg, frag_now, frag_now_fix ()); |
252b5132 RH |
686 | |
687 | symbol_table_insert (symbolP); | |
d4887adc | 688 | } |
252b5132 RH |
689 | |
690 | if (mri_common_symbol != NULL) | |
691 | { | |
692 | /* This symbol is actually being defined within an MRI common | |
1d3b2b27 | 693 | section. This requires special handling. */ |
5014c2d2 AM |
694 | if (symbolP->flags.local_symbol) |
695 | symbolP = local_symbol_convert (symbolP); | |
696 | symbolP->x->value.X_op = O_symbol; | |
697 | symbolP->x->value.X_add_symbol = mri_common_symbol; | |
698 | symbolP->x->value.X_add_number = S_GET_VALUE (mri_common_symbol); | |
3c0d9d71 | 699 | symbolP->frag = &zero_address_frag; |
252b5132 | 700 | S_SET_SEGMENT (symbolP, expr_section); |
3c0d9d71 | 701 | symbolP->flags.mri_common = 1; |
252b5132 RH |
702 | } |
703 | ||
704 | #ifdef tc_frob_label | |
705 | tc_frob_label (symbolP); | |
706 | #endif | |
707 | #ifdef obj_frob_label | |
708 | obj_frob_label (symbolP); | |
709 | #endif | |
710 | ||
711 | return symbolP; | |
712 | } | |
713 | \f | |
7c743825 | 714 | /* Die if we can't insert the symbol. */ |
252b5132 | 715 | |
7c743825 | 716 | void |
74937d39 | 717 | symbol_table_insert (symbolS *symbolP) |
252b5132 | 718 | { |
252b5132 | 719 | know (symbolP); |
252b5132 | 720 | |
fe0e921f | 721 | htab_insert (sy_hash, symbolP, 1); |
7c743825 | 722 | } |
252b5132 | 723 | \f |
7c743825 KH |
724 | /* If a symbol name does not exist, create it as undefined, and insert |
725 | it into the symbol table. Return a pointer to it. */ | |
726 | ||
252b5132 | 727 | symbolS * |
74937d39 | 728 | symbol_find_or_make (const char *name) |
252b5132 | 729 | { |
ed9e98c2 | 730 | symbolS *symbolP; |
252b5132 RH |
731 | |
732 | symbolP = symbol_find (name); | |
733 | ||
734 | if (symbolP == NULL) | |
735 | { | |
49309057 ILT |
736 | if (! flag_keep_locals && bfd_is_local_label_name (stdoutput, name)) |
737 | { | |
738 | symbolP = md_undefined_symbol ((char *) name); | |
739 | if (symbolP != NULL) | |
740 | return symbolP; | |
741 | ||
742 | symbolP = (symbolS *) local_symbol_make (name, undefined_section, | |
e01e1cee | 743 | &zero_address_frag, 0); |
49309057 ILT |
744 | return symbolP; |
745 | } | |
49309057 | 746 | |
252b5132 RH |
747 | symbolP = symbol_make (name); |
748 | ||
749 | symbol_table_insert (symbolP); | |
750 | } /* if symbol wasn't found */ | |
751 | ||
752 | return (symbolP); | |
7c743825 | 753 | } |
252b5132 RH |
754 | |
755 | symbolS * | |
74937d39 | 756 | symbol_make (const char *name) |
252b5132 RH |
757 | { |
758 | symbolS *symbolP; | |
759 | ||
7c743825 | 760 | /* Let the machine description default it, e.g. for register names. */ |
252b5132 RH |
761 | symbolP = md_undefined_symbol ((char *) name); |
762 | ||
763 | if (!symbolP) | |
e01e1cee | 764 | symbolP = symbol_new (name, undefined_section, &zero_address_frag, 0); |
252b5132 RH |
765 | |
766 | return (symbolP); | |
7c743825 | 767 | } |
252b5132 | 768 | |
9497f5ac NC |
769 | symbolS * |
770 | symbol_clone (symbolS *orgsymP, int replace) | |
771 | { | |
772 | symbolS *newsymP; | |
6a2b6326 | 773 | asymbol *bsymorg, *bsymnew; |
9497f5ac | 774 | |
4a826962 MR |
775 | /* Make sure we never clone the dot special symbol. */ |
776 | gas_assert (orgsymP != &dot_symbol); | |
777 | ||
5014c2d2 AM |
778 | /* When cloning a local symbol it isn't absolutely necessary to |
779 | convert the original, but converting makes the code much | |
780 | simpler to cover this unexpected case. As of 2020-08-21 | |
781 | symbol_clone won't be called on a local symbol. */ | |
782 | if (orgsymP->flags.local_symbol) | |
783 | orgsymP = local_symbol_convert (orgsymP); | |
6a2b6326 | 784 | bsymorg = orgsymP->bsym; |
9497f5ac | 785 | |
c30081c1 | 786 | newsymP = notes_alloc (sizeof (symbolS) + sizeof (struct xsymbol)); |
9497f5ac | 787 | *newsymP = *orgsymP; |
5014c2d2 AM |
788 | newsymP->x = (struct xsymbol *) (newsymP + 1); |
789 | *newsymP->x = *orgsymP->x; | |
6a2b6326 JB |
790 | bsymnew = bfd_make_empty_symbol (bfd_asymbol_bfd (bsymorg)); |
791 | if (bsymnew == NULL) | |
885afe7b | 792 | as_fatal ("bfd_make_empty_symbol: %s", bfd_errmsg (bfd_get_error ())); |
6a2b6326 JB |
793 | newsymP->bsym = bsymnew; |
794 | bsymnew->name = bsymorg->name; | |
25313d6a | 795 | bsymnew->flags = bsymorg->flags & ~BSF_SECTION_SYM; |
9d75b288 | 796 | bsymnew->section = bsymorg->section; |
6a2b6326 JB |
797 | bfd_copy_private_symbol_data (bfd_asymbol_bfd (bsymorg), bsymorg, |
798 | bfd_asymbol_bfd (bsymnew), bsymnew); | |
799 | ||
800 | #ifdef obj_symbol_clone_hook | |
801 | obj_symbol_clone_hook (newsymP, orgsymP); | |
802 | #endif | |
803 | ||
804 | #ifdef tc_symbol_clone_hook | |
805 | tc_symbol_clone_hook (newsymP, orgsymP); | |
806 | #endif | |
9497f5ac NC |
807 | |
808 | if (replace) | |
809 | { | |
810 | if (symbol_rootP == orgsymP) | |
811 | symbol_rootP = newsymP; | |
5014c2d2 | 812 | else if (orgsymP->x->previous) |
9497f5ac | 813 | { |
5014c2d2 AM |
814 | orgsymP->x->previous->x->next = newsymP; |
815 | orgsymP->x->previous = NULL; | |
9497f5ac NC |
816 | } |
817 | if (symbol_lastP == orgsymP) | |
818 | symbol_lastP = newsymP; | |
5014c2d2 AM |
819 | else if (orgsymP->x->next) |
820 | orgsymP->x->next->x->previous = newsymP; | |
73e24c68 AM |
821 | |
822 | /* Symbols that won't be output can't be external. */ | |
823 | S_CLEAR_EXTERNAL (orgsymP); | |
5014c2d2 | 824 | orgsymP->x->previous = orgsymP->x->next = orgsymP; |
9497f5ac NC |
825 | debug_verify_symchain (symbol_rootP, symbol_lastP); |
826 | ||
827 | symbol_table_insert (newsymP); | |
828 | } | |
bdf128d6 | 829 | else |
73e24c68 AM |
830 | { |
831 | /* Symbols that won't be output can't be external. */ | |
832 | S_CLEAR_EXTERNAL (newsymP); | |
5014c2d2 | 833 | newsymP->x->previous = newsymP->x->next = newsymP; |
73e24c68 | 834 | } |
9497f5ac NC |
835 | |
836 | return newsymP; | |
837 | } | |
838 | ||
839 | /* Referenced symbols, if they are forward references, need to be cloned | |
840 | (without replacing the original) so that the value of the referenced | |
38cf168b | 841 | symbols at the point of use is saved by the clone. */ |
9497f5ac NC |
842 | |
843 | #undef symbol_clone_if_forward_ref | |
844 | symbolS * | |
845 | symbol_clone_if_forward_ref (symbolS *symbolP, int is_forward) | |
846 | { | |
4afc8894 AM |
847 | if (symbolP |
848 | && !symbolP->flags.local_symbol | |
849 | && !symbolP->flags.forward_resolved) | |
9497f5ac | 850 | { |
5014c2d2 AM |
851 | symbolS *orig_add_symbol = symbolP->x->value.X_add_symbol; |
852 | symbolS *orig_op_symbol = symbolP->x->value.X_op_symbol; | |
38cf168b AM |
853 | symbolS *add_symbol = orig_add_symbol; |
854 | symbolS *op_symbol = orig_op_symbol; | |
9497f5ac | 855 | |
3c0d9d71 | 856 | if (symbolP->flags.forward_ref) |
9497f5ac NC |
857 | is_forward = 1; |
858 | ||
859 | if (is_forward) | |
860 | { | |
861 | /* assign_symbol() clones volatile symbols; pre-existing expressions | |
862 | hold references to the original instance, but want the current | |
863 | value. Just repeat the lookup. */ | |
864 | if (add_symbol && S_IS_VOLATILE (add_symbol)) | |
865 | add_symbol = symbol_find_exact (S_GET_NAME (add_symbol)); | |
866 | if (op_symbol && S_IS_VOLATILE (op_symbol)) | |
867 | op_symbol = symbol_find_exact (S_GET_NAME (op_symbol)); | |
868 | } | |
869 | ||
3c0d9d71 | 870 | /* Re-using resolving here, as this routine cannot get called from |
9497f5ac | 871 | symbol resolution code. */ |
158184ac | 872 | if ((symbolP->bsym->section == expr_section |
3c0d9d71 AM |
873 | || symbolP->flags.forward_ref) |
874 | && !symbolP->flags.resolving) | |
9497f5ac | 875 | { |
3c0d9d71 | 876 | symbolP->flags.resolving = 1; |
9497f5ac NC |
877 | add_symbol = symbol_clone_if_forward_ref (add_symbol, is_forward); |
878 | op_symbol = symbol_clone_if_forward_ref (op_symbol, is_forward); | |
3c0d9d71 | 879 | symbolP->flags.resolving = 0; |
9497f5ac NC |
880 | } |
881 | ||
3c0d9d71 | 882 | if (symbolP->flags.forward_ref |
38cf168b AM |
883 | || add_symbol != orig_add_symbol |
884 | || op_symbol != orig_op_symbol) | |
3df4e177 | 885 | { |
4a826962 MR |
886 | if (symbolP != &dot_symbol) |
887 | { | |
888 | symbolP = symbol_clone (symbolP, 0); | |
3c0d9d71 | 889 | symbolP->flags.resolving = 0; |
4a826962 MR |
890 | } |
891 | else | |
a1facbec MR |
892 | { |
893 | symbolP = symbol_temp_new_now (); | |
894 | #ifdef tc_new_dot_label | |
895 | tc_new_dot_label (symbolP); | |
896 | #endif | |
897 | } | |
3df4e177 | 898 | } |
9497f5ac | 899 | |
5014c2d2 AM |
900 | symbolP->x->value.X_add_symbol = add_symbol; |
901 | symbolP->x->value.X_op_symbol = op_symbol; | |
4afc8894 | 902 | symbolP->flags.forward_resolved = 1; |
9497f5ac NC |
903 | } |
904 | ||
905 | return symbolP; | |
906 | } | |
907 | ||
b7d6ed97 | 908 | symbolS * |
e01e1cee | 909 | symbol_temp_new (segT seg, fragS *frag, valueT ofs) |
b7d6ed97 | 910 | { |
e01e1cee | 911 | return symbol_new (FAKE_LABEL_NAME, seg, frag, ofs); |
b7d6ed97 RH |
912 | } |
913 | ||
914 | symbolS * | |
74937d39 | 915 | symbol_temp_new_now (void) |
b7d6ed97 | 916 | { |
e01e1cee | 917 | return symbol_temp_new (now_seg, frag_now, frag_now_fix ()); |
b7d6ed97 RH |
918 | } |
919 | ||
d18d1999 CE |
920 | symbolS * |
921 | symbol_temp_new_now_octets (void) | |
922 | { | |
e01e1cee | 923 | return symbol_temp_new (now_seg, frag_now, frag_now_fix_octets ()); |
d18d1999 CE |
924 | } |
925 | ||
b7d6ed97 | 926 | symbolS * |
74937d39 | 927 | symbol_temp_make (void) |
b7d6ed97 | 928 | { |
756d1d01 | 929 | return symbol_make (FAKE_LABEL_NAME); |
b7d6ed97 RH |
930 | } |
931 | ||
7c743825 KH |
932 | /* Implement symbol table lookup. |
933 | In: A symbol's name as a string: '\0' can't be part of a symbol name. | |
934 | Out: NULL if the name was not in the symbol table, else the address | |
935 | of a struct symbol associated with that name. */ | |
252b5132 | 936 | |
9758f3fc | 937 | symbolS * |
74937d39 | 938 | symbol_find_exact (const char *name) |
06e77878 AO |
939 | { |
940 | return symbol_find_exact_noref (name, 0); | |
941 | } | |
942 | ||
943 | symbolS * | |
944 | symbol_find_exact_noref (const char *name, int noref) | |
9758f3fc | 945 | { |
5014c2d2 | 946 | symbolS *sym = symbol_entry_find (sy_hash, name); |
06e77878 AO |
947 | |
948 | /* Any references to the symbol, except for the reference in | |
949 | .weakref, must clear this flag, such that the symbol does not | |
950 | turn into a weak symbol. Note that we don't have to handle the | |
951 | local_symbol case, since a weakrefd is always promoted out of the | |
952 | local_symbol table when it is turned into a weak symbol. */ | |
953 | if (sym && ! noref) | |
954 | S_CLEAR_WEAKREFD (sym); | |
955 | ||
956 | return sym; | |
9758f3fc AM |
957 | } |
958 | ||
252b5132 | 959 | symbolS * |
91c4c449 | 960 | symbol_find (const char *name) |
06e77878 AO |
961 | { |
962 | return symbol_find_noref (name, 0); | |
963 | } | |
964 | ||
965 | symbolS * | |
966 | symbol_find_noref (const char *name, int noref) | |
252b5132 | 967 | { |
e1fa0163 NC |
968 | symbolS * result; |
969 | char * copy = NULL; | |
970 | ||
252b5132 RH |
971 | #ifdef tc_canonicalize_symbol_name |
972 | { | |
e1fa0163 | 973 | copy = xstrdup (name); |
252b5132 RH |
974 | name = tc_canonicalize_symbol_name (copy); |
975 | } | |
976 | #endif | |
977 | ||
978 | if (! symbols_case_sensitive) | |
979 | { | |
03987ced | 980 | const char *orig; |
e1fa0163 | 981 | char *copy2 = NULL; |
03987ced RH |
982 | unsigned char c; |
983 | ||
984 | orig = name; | |
e1fa0163 NC |
985 | if (copy != NULL) |
986 | copy2 = copy; | |
325801bd | 987 | name = copy = XNEWVEC (char, strlen (name) + 1); |
03987ced RH |
988 | |
989 | while ((c = *orig++) != '\0') | |
e1fa0163 | 990 | *copy++ = TOUPPER (c); |
03987ced | 991 | *copy = '\0'; |
e1fa0163 | 992 | |
9fbb53c7 | 993 | free (copy2); |
e1fa0163 | 994 | copy = (char *) name; |
252b5132 RH |
995 | } |
996 | ||
e1fa0163 | 997 | result = symbol_find_exact_noref (name, noref); |
9fbb53c7 | 998 | free (copy); |
e1fa0163 | 999 | return result; |
252b5132 RH |
1000 | } |
1001 | ||
7c743825 KH |
1002 | /* Once upon a time, symbols were kept in a singly linked list. At |
1003 | least coff needs to be able to rearrange them from time to time, for | |
1004 | which a doubly linked list is much more convenient. Loic did these | |
1005 | as macros which seemed dangerous to me so they're now functions. | |
1006 | xoxorich. */ | |
1007 | ||
1008 | /* Link symbol ADDME after symbol TARGET in the chain. */ | |
252b5132 | 1009 | |
7c743825 | 1010 | void |
74937d39 KH |
1011 | symbol_append (symbolS *addme, symbolS *target, |
1012 | symbolS **rootPP, symbolS **lastPP) | |
252b5132 | 1013 | { |
3c0d9d71 AM |
1014 | extern int symbol_table_frozen; |
1015 | if (symbol_table_frozen) | |
1016 | abort (); | |
5014c2d2 | 1017 | if (addme->flags.local_symbol) |
49309057 | 1018 | abort (); |
5014c2d2 | 1019 | if (target != NULL && target->flags.local_symbol) |
49309057 ILT |
1020 | abort (); |
1021 | ||
252b5132 RH |
1022 | if (target == NULL) |
1023 | { | |
1024 | know (*rootPP == NULL); | |
1025 | know (*lastPP == NULL); | |
5014c2d2 AM |
1026 | addme->x->next = NULL; |
1027 | addme->x->previous = NULL; | |
252b5132 RH |
1028 | *rootPP = addme; |
1029 | *lastPP = addme; | |
1030 | return; | |
7c743825 | 1031 | } /* if the list is empty */ |
252b5132 | 1032 | |
5014c2d2 | 1033 | if (target->x->next != NULL) |
252b5132 | 1034 | { |
5014c2d2 | 1035 | target->x->next->x->previous = addme; |
252b5132 RH |
1036 | } |
1037 | else | |
1038 | { | |
1039 | know (*lastPP == target); | |
1040 | *lastPP = addme; | |
7c743825 | 1041 | } /* if we have a next */ |
252b5132 | 1042 | |
5014c2d2 AM |
1043 | addme->x->next = target->x->next; |
1044 | target->x->next = addme; | |
1045 | addme->x->previous = target; | |
252b5132 RH |
1046 | |
1047 | debug_verify_symchain (symbol_rootP, symbol_lastP); | |
1048 | } | |
1049 | ||
7c743825 KH |
1050 | /* Set the chain pointers of SYMBOL to null. */ |
1051 | ||
1052 | void | |
74937d39 | 1053 | symbol_clear_list_pointers (symbolS *symbolP) |
252b5132 | 1054 | { |
5014c2d2 | 1055 | if (symbolP->flags.local_symbol) |
49309057 | 1056 | abort (); |
5014c2d2 AM |
1057 | symbolP->x->next = NULL; |
1058 | symbolP->x->previous = NULL; | |
252b5132 RH |
1059 | } |
1060 | ||
7c743825 KH |
1061 | /* Remove SYMBOLP from the list. */ |
1062 | ||
1063 | void | |
74937d39 | 1064 | symbol_remove (symbolS *symbolP, symbolS **rootPP, symbolS **lastPP) |
252b5132 | 1065 | { |
5014c2d2 | 1066 | if (symbolP->flags.local_symbol) |
49309057 ILT |
1067 | abort (); |
1068 | ||
252b5132 RH |
1069 | if (symbolP == *rootPP) |
1070 | { | |
5014c2d2 | 1071 | *rootPP = symbolP->x->next; |
7c743825 | 1072 | } /* if it was the root */ |
252b5132 RH |
1073 | |
1074 | if (symbolP == *lastPP) | |
1075 | { | |
5014c2d2 | 1076 | *lastPP = symbolP->x->previous; |
7c743825 | 1077 | } /* if it was the tail */ |
252b5132 | 1078 | |
5014c2d2 | 1079 | if (symbolP->x->next != NULL) |
252b5132 | 1080 | { |
5014c2d2 | 1081 | symbolP->x->next->x->previous = symbolP->x->previous; |
7c743825 | 1082 | } /* if not last */ |
252b5132 | 1083 | |
5014c2d2 | 1084 | if (symbolP->x->previous != NULL) |
252b5132 | 1085 | { |
5014c2d2 | 1086 | symbolP->x->previous->x->next = symbolP->x->next; |
7c743825 | 1087 | } /* if not first */ |
252b5132 RH |
1088 | |
1089 | debug_verify_symchain (*rootPP, *lastPP); | |
1090 | } | |
1091 | ||
7c743825 KH |
1092 | /* Link symbol ADDME before symbol TARGET in the chain. */ |
1093 | ||
1094 | void | |
74937d39 KH |
1095 | symbol_insert (symbolS *addme, symbolS *target, |
1096 | symbolS **rootPP, symbolS **lastPP ATTRIBUTE_UNUSED) | |
252b5132 | 1097 | { |
3c0d9d71 AM |
1098 | extern int symbol_table_frozen; |
1099 | if (symbol_table_frozen) | |
1100 | abort (); | |
5014c2d2 | 1101 | if (addme->flags.local_symbol) |
49309057 | 1102 | abort (); |
5014c2d2 | 1103 | if (target->flags.local_symbol) |
49309057 ILT |
1104 | abort (); |
1105 | ||
5014c2d2 | 1106 | if (target->x->previous != NULL) |
252b5132 | 1107 | { |
5014c2d2 | 1108 | target->x->previous->x->next = addme; |
252b5132 RH |
1109 | } |
1110 | else | |
1111 | { | |
1112 | know (*rootPP == target); | |
1113 | *rootPP = addme; | |
7c743825 | 1114 | } /* if not first */ |
252b5132 | 1115 | |
5014c2d2 AM |
1116 | addme->x->previous = target->x->previous; |
1117 | target->x->previous = addme; | |
1118 | addme->x->next = target; | |
252b5132 RH |
1119 | |
1120 | debug_verify_symchain (*rootPP, *lastPP); | |
1121 | } | |
1122 | ||
7c743825 | 1123 | void |
74937d39 | 1124 | verify_symbol_chain (symbolS *rootP, symbolS *lastP) |
252b5132 RH |
1125 | { |
1126 | symbolS *symbolP = rootP; | |
1127 | ||
1128 | if (symbolP == NULL) | |
1129 | return; | |
1130 | ||
1131 | for (; symbol_next (symbolP) != NULL; symbolP = symbol_next (symbolP)) | |
1132 | { | |
9c2799c2 | 1133 | gas_assert (symbolP->bsym != NULL); |
3c0d9d71 | 1134 | gas_assert (symbolP->flags.local_symbol == 0); |
5014c2d2 | 1135 | gas_assert (symbolP->x->next->x->previous == symbolP); |
252b5132 RH |
1136 | } |
1137 | ||
9c2799c2 | 1138 | gas_assert (lastP == symbolP); |
252b5132 RH |
1139 | } |
1140 | ||
8d1015a8 AM |
1141 | int |
1142 | symbol_on_chain (symbolS *s, symbolS *rootPP, symbolS *lastPP) | |
1143 | { | |
5014c2d2 AM |
1144 | return (!s->flags.local_symbol |
1145 | && ((s->x->next != s | |
1146 | && s->x->next != NULL | |
1147 | && s->x->next->x->previous == s) | |
8d1015a8 | 1148 | || s == lastPP) |
5014c2d2 AM |
1149 | && ((s->x->previous != s |
1150 | && s->x->previous != NULL | |
1151 | && s->x->previous->x->next == s) | |
8d1015a8 AM |
1152 | || s == rootPP)); |
1153 | } | |
1154 | ||
280d71bf DB |
1155 | #ifdef OBJ_COMPLEX_RELC |
1156 | ||
1157 | static int | |
1158 | use_complex_relocs_for (symbolS * symp) | |
1159 | { | |
5014c2d2 | 1160 | switch (symp->x->value.X_op) |
280d71bf DB |
1161 | { |
1162 | case O_constant: | |
1163 | return 0; | |
1164 | ||
280d71bf DB |
1165 | case O_multiply: |
1166 | case O_divide: | |
1167 | case O_modulus: | |
1168 | case O_left_shift: | |
1169 | case O_right_shift: | |
1170 | case O_bit_inclusive_or: | |
1171 | case O_bit_or_not: | |
1172 | case O_bit_exclusive_or: | |
1173 | case O_bit_and: | |
1174 | case O_add: | |
1175 | case O_subtract: | |
1176 | case O_eq: | |
1177 | case O_ne: | |
1178 | case O_lt: | |
1179 | case O_le: | |
1180 | case O_ge: | |
1181 | case O_gt: | |
1182 | case O_logical_and: | |
1183 | case O_logical_or: | |
5014c2d2 AM |
1184 | if ((S_IS_COMMON (symp->x->value.X_op_symbol) |
1185 | || S_IS_LOCAL (symp->x->value.X_op_symbol)) | |
1186 | && S_IS_DEFINED (symp->x->value.X_op_symbol) | |
1187 | && S_GET_SEGMENT (symp->x->value.X_op_symbol) != expr_section) | |
0f1309c8 AM |
1188 | { |
1189 | case O_symbol: | |
1190 | case O_symbol_rva: | |
1191 | case O_uminus: | |
1192 | case O_bit_not: | |
1193 | case O_logical_not: | |
5014c2d2 AM |
1194 | if ((S_IS_COMMON (symp->x->value.X_add_symbol) |
1195 | || S_IS_LOCAL (symp->x->value.X_add_symbol)) | |
1196 | && S_IS_DEFINED (symp->x->value.X_add_symbol) | |
1197 | && S_GET_SEGMENT (symp->x->value.X_add_symbol) != expr_section) | |
0f1309c8 AM |
1198 | return 0; |
1199 | } | |
280d71bf | 1200 | break; |
34bca508 | 1201 | |
280d71bf DB |
1202 | default: |
1203 | break; | |
1204 | } | |
1205 | return 1; | |
1206 | } | |
1207 | #endif | |
1208 | ||
0909233e | 1209 | static void |
5a0ade8b | 1210 | report_op_error (symbolS *symp, symbolS *left, operatorT op, symbolS *right) |
0909233e | 1211 | { |
3b4dbbbf | 1212 | const char *file; |
0909233e | 1213 | unsigned int line; |
5a0ade8b AM |
1214 | segT seg_left = left ? S_GET_SEGMENT (left) : 0; |
1215 | segT seg_right = S_GET_SEGMENT (right); | |
1216 | const char *opname; | |
1217 | ||
1218 | switch (op) | |
1219 | { | |
1220 | default: | |
1221 | abort (); | |
1222 | return; | |
1223 | ||
1224 | case O_uminus: opname = "-"; break; | |
1225 | case O_bit_not: opname = "~"; break; | |
1226 | case O_logical_not: opname = "!"; break; | |
1227 | case O_multiply: opname = "*"; break; | |
1228 | case O_divide: opname = "/"; break; | |
1229 | case O_modulus: opname = "%"; break; | |
1230 | case O_left_shift: opname = "<<"; break; | |
1231 | case O_right_shift: opname = ">>"; break; | |
1232 | case O_bit_inclusive_or: opname = "|"; break; | |
1233 | case O_bit_or_not: opname = "|~"; break; | |
1234 | case O_bit_exclusive_or: opname = "^"; break; | |
1235 | case O_bit_and: opname = "&"; break; | |
1236 | case O_add: opname = "+"; break; | |
1237 | case O_subtract: opname = "-"; break; | |
1238 | case O_eq: opname = "=="; break; | |
1239 | case O_ne: opname = "!="; break; | |
1240 | case O_lt: opname = "<"; break; | |
1241 | case O_le: opname = "<="; break; | |
1242 | case O_ge: opname = ">="; break; | |
1243 | case O_gt: opname = ">"; break; | |
1244 | case O_logical_and: opname = "&&"; break; | |
1245 | case O_logical_or: opname = "||"; break; | |
1246 | } | |
1d3b2b27 | 1247 | |
0909233e AM |
1248 | if (expr_symbol_where (symp, &file, &line)) |
1249 | { | |
5a0ade8b | 1250 | if (left) |
0909233e | 1251 | as_bad_where (file, line, |
5a0ade8b AM |
1252 | _("invalid operands (%s and %s sections) for `%s'"), |
1253 | seg_left->name, seg_right->name, opname); | |
1254 | else | |
0909233e | 1255 | as_bad_where (file, line, |
5a0ade8b AM |
1256 | _("invalid operand (%s section) for `%s'"), |
1257 | seg_right->name, opname); | |
0909233e AM |
1258 | } |
1259 | else | |
1260 | { | |
5a0ade8b AM |
1261 | const char *sname = S_GET_NAME (symp); |
1262 | ||
1263 | if (left) | |
1264 | as_bad (_("invalid operands (%s and %s sections) for `%s' when setting `%s'"), | |
1265 | seg_left->name, seg_right->name, opname, sname); | |
1266 | else | |
1267 | as_bad (_("invalid operand (%s section) for `%s' when setting `%s'"), | |
1268 | seg_right->name, opname, sname); | |
0909233e AM |
1269 | } |
1270 | } | |
1271 | ||
252b5132 RH |
1272 | /* Resolve the value of a symbol. This is called during the final |
1273 | pass over the symbol table to resolve any symbols with complex | |
1274 | values. */ | |
1275 | ||
1276 | valueT | |
74937d39 | 1277 | resolve_symbol_value (symbolS *symp) |
252b5132 RH |
1278 | { |
1279 | int resolved; | |
1903f138 | 1280 | valueT final_val; |
252b5132 RH |
1281 | segT final_seg; |
1282 | ||
5014c2d2 | 1283 | if (symp->flags.local_symbol) |
49309057 ILT |
1284 | { |
1285 | struct local_symbol *locsym = (struct local_symbol *) symp; | |
1286 | ||
3c0d9d71 AM |
1287 | final_val = locsym->value; |
1288 | if (locsym->flags.resolved) | |
bd780143 | 1289 | return final_val; |
49309057 | 1290 | |
61826503 CE |
1291 | /* Symbols whose section has SEC_ELF_OCTETS set, |
1292 | resolve to octets instead of target bytes. */ | |
3c0d9d71 | 1293 | if (locsym->section->flags & SEC_OCTETS) |
5014c2d2 | 1294 | final_val += locsym->frag->fr_address; |
61826503 | 1295 | else |
5014c2d2 | 1296 | final_val += locsym->frag->fr_address / OCTETS_PER_BYTE; |
49309057 | 1297 | |
6386f3a7 | 1298 | if (finalize_syms) |
49309057 | 1299 | { |
3c0d9d71 AM |
1300 | locsym->value = final_val; |
1301 | locsym->flags.resolved = 1; | |
49309057 ILT |
1302 | } |
1303 | ||
1304 | return final_val; | |
1305 | } | |
1306 | ||
3c0d9d71 | 1307 | if (symp->flags.resolved) |
252b5132 | 1308 | { |
1903f138 | 1309 | final_val = 0; |
5014c2d2 | 1310 | while (symp->x->value.X_op == O_symbol) |
1903f138 | 1311 | { |
5014c2d2 AM |
1312 | final_val += symp->x->value.X_add_number; |
1313 | symp = symp->x->value.X_add_symbol; | |
1314 | if (symp->flags.local_symbol) | |
2a50b401 AM |
1315 | { |
1316 | struct local_symbol *locsym = (struct local_symbol *) symp; | |
3c0d9d71 | 1317 | final_val += locsym->value; |
2a50b401 AM |
1318 | return final_val; |
1319 | } | |
3c0d9d71 | 1320 | if (!symp->flags.resolved) |
2a50b401 | 1321 | return 0; |
1903f138 | 1322 | } |
5014c2d2 AM |
1323 | if (symp->x->value.X_op == O_constant) |
1324 | final_val += symp->x->value.X_add_number; | |
252b5132 | 1325 | else |
1903f138 AM |
1326 | final_val = 0; |
1327 | return final_val; | |
252b5132 RH |
1328 | } |
1329 | ||
1330 | resolved = 0; | |
1331 | final_seg = S_GET_SEGMENT (symp); | |
1332 | ||
3c0d9d71 | 1333 | if (symp->flags.resolving) |
252b5132 | 1334 | { |
6386f3a7 | 1335 | if (finalize_syms) |
0e389e77 | 1336 | as_bad (_("symbol definition loop encountered at `%s'"), |
7c743825 | 1337 | S_GET_NAME (symp)); |
252b5132 RH |
1338 | final_val = 0; |
1339 | resolved = 1; | |
1340 | } | |
280d71bf DB |
1341 | #ifdef OBJ_COMPLEX_RELC |
1342 | else if (final_seg == expr_section | |
1343 | && use_complex_relocs_for (symp)) | |
1344 | { | |
1345 | symbolS * relc_symbol = NULL; | |
1346 | char * relc_symbol_name = NULL; | |
1347 | ||
5014c2d2 | 1348 | relc_symbol_name = symbol_relc_make_expr (& symp->x->value); |
280d71bf DB |
1349 | |
1350 | /* For debugging, print out conversion input & output. */ | |
1351 | #ifdef DEBUG_SYMS | |
5014c2d2 | 1352 | print_expr (& symp->x->value); |
280d71bf DB |
1353 | if (relc_symbol_name) |
1354 | fprintf (stderr, "-> relc symbol: %s\n", relc_symbol_name); | |
1355 | #endif | |
1356 | ||
1357 | if (relc_symbol_name != NULL) | |
1358 | relc_symbol = symbol_new (relc_symbol_name, undefined_section, | |
e01e1cee | 1359 | &zero_address_frag, 0); |
280d71bf DB |
1360 | |
1361 | if (relc_symbol == NULL) | |
1362 | { | |
1363 | as_bad (_("cannot convert expression symbol %s to complex relocation"), | |
1364 | S_GET_NAME (symp)); | |
1365 | resolved = 0; | |
1366 | } | |
1367 | else | |
1368 | { | |
1369 | symbol_table_insert (relc_symbol); | |
1370 | ||
3c0d9d71 | 1371 | /* S_CLEAR_EXTERNAL (relc_symbol); */ |
280d71bf DB |
1372 | if (symp->bsym->flags & BSF_SRELC) |
1373 | relc_symbol->bsym->flags |= BSF_SRELC; | |
1374 | else | |
34bca508 | 1375 | relc_symbol->bsym->flags |= BSF_RELC; |
280d71bf DB |
1376 | /* symp->bsym->flags |= BSF_RELC; */ |
1377 | copy_symbol_attributes (symp, relc_symbol); | |
5014c2d2 AM |
1378 | symp->x->value.X_op = O_symbol; |
1379 | symp->x->value.X_add_symbol = relc_symbol; | |
1380 | symp->x->value.X_add_number = 0; | |
280d71bf DB |
1381 | resolved = 1; |
1382 | } | |
1383 | ||
1903f138 | 1384 | final_val = 0; |
280d71bf DB |
1385 | final_seg = undefined_section; |
1386 | goto exit_dont_set_value; | |
1387 | } | |
1388 | #endif | |
252b5132 RH |
1389 | else |
1390 | { | |
1391 | symbolS *add_symbol, *op_symbol; | |
1392 | offsetT left, right; | |
1393 | segT seg_left, seg_right; | |
1394 | operatorT op; | |
2d034539 | 1395 | int move_seg_ok; |
252b5132 | 1396 | |
3c0d9d71 | 1397 | symp->flags.resolving = 1; |
252b5132 RH |
1398 | |
1399 | /* Help out with CSE. */ | |
5014c2d2 AM |
1400 | add_symbol = symp->x->value.X_add_symbol; |
1401 | op_symbol = symp->x->value.X_op_symbol; | |
1402 | final_val = symp->x->value.X_add_number; | |
1403 | op = symp->x->value.X_op; | |
252b5132 RH |
1404 | |
1405 | switch (op) | |
1406 | { | |
1407 | default: | |
1408 | BAD_CASE (op); | |
1409 | break; | |
1410 | ||
ffd29c9c DS |
1411 | case O_md1: |
1412 | case O_md2: | |
1413 | case O_md3: | |
1414 | case O_md4: | |
1415 | case O_md5: | |
1416 | case O_md6: | |
1417 | case O_md7: | |
1418 | case O_md8: | |
1419 | case O_md9: | |
1420 | case O_md10: | |
1421 | case O_md11: | |
1422 | case O_md12: | |
1423 | case O_md13: | |
1424 | case O_md14: | |
1425 | case O_md15: | |
1426 | case O_md16: | |
1427 | case O_md17: | |
1428 | case O_md18: | |
1429 | case O_md19: | |
1430 | case O_md20: | |
1431 | case O_md21: | |
1432 | case O_md22: | |
1433 | case O_md23: | |
1434 | case O_md24: | |
1435 | case O_md25: | |
1436 | case O_md26: | |
1437 | case O_md27: | |
1438 | case O_md28: | |
1439 | case O_md29: | |
1440 | case O_md30: | |
1441 | case O_md31: | |
1442 | case O_md32: | |
1443 | #ifdef md_resolve_symbol | |
1444 | resolved = md_resolve_symbol (symp, &final_val, &final_seg); | |
1445 | if (resolved) | |
1446 | break; | |
1447 | #endif | |
1448 | goto exit_dont_set_value; | |
1449 | ||
252b5132 RH |
1450 | case O_absent: |
1451 | final_val = 0; | |
1452 | /* Fall through. */ | |
1453 | ||
1454 | case O_constant: | |
61826503 CE |
1455 | /* Symbols whose section has SEC_ELF_OCTETS set, |
1456 | resolve to octets instead of target bytes. */ | |
1457 | if (symp->bsym->section->flags & SEC_OCTETS) | |
3c0d9d71 | 1458 | final_val += symp->frag->fr_address; |
61826503 | 1459 | else |
3c0d9d71 | 1460 | final_val += symp->frag->fr_address / OCTETS_PER_BYTE; |
252b5132 RH |
1461 | if (final_seg == expr_section) |
1462 | final_seg = absolute_section; | |
db557034 AM |
1463 | /* Fall through. */ |
1464 | ||
1465 | case O_register: | |
252b5132 RH |
1466 | resolved = 1; |
1467 | break; | |
1468 | ||
1469 | case O_symbol: | |
1470 | case O_symbol_rva: | |
145667f8 | 1471 | case O_secidx: |
6386f3a7 | 1472 | left = resolve_symbol_value (add_symbol); |
e0890092 AM |
1473 | seg_left = S_GET_SEGMENT (add_symbol); |
1474 | if (finalize_syms) | |
5014c2d2 | 1475 | symp->x->value.X_op_symbol = NULL; |
252b5132 | 1476 | |
e0890092 | 1477 | do_symbol: |
06e77878 AO |
1478 | if (S_IS_WEAKREFR (symp)) |
1479 | { | |
9c2799c2 | 1480 | gas_assert (final_val == 0); |
06e77878 AO |
1481 | if (S_IS_WEAKREFR (add_symbol)) |
1482 | { | |
5014c2d2 AM |
1483 | gas_assert (add_symbol->x->value.X_op == O_symbol |
1484 | && add_symbol->x->value.X_add_number == 0); | |
1485 | add_symbol = add_symbol->x->value.X_add_symbol; | |
9c2799c2 | 1486 | gas_assert (! S_IS_WEAKREFR (add_symbol)); |
5014c2d2 | 1487 | symp->x->value.X_add_symbol = add_symbol; |
06e77878 AO |
1488 | } |
1489 | } | |
1490 | ||
3c0d9d71 | 1491 | if (symp->flags.mri_common) |
252b5132 RH |
1492 | { |
1493 | /* This is a symbol inside an MRI common section. The | |
e0890092 AM |
1494 | relocation routines are going to handle it specially. |
1495 | Don't change the value. */ | |
49309057 | 1496 | resolved = symbol_resolved_p (add_symbol); |
252b5132 RH |
1497 | break; |
1498 | } | |
1499 | ||
2a50b401 AM |
1500 | /* Don't leave symbol loops. */ |
1501 | if (finalize_syms | |
5014c2d2 | 1502 | && !add_symbol->flags.local_symbol |
3c0d9d71 | 1503 | && add_symbol->flags.resolving) |
2a50b401 AM |
1504 | break; |
1505 | ||
cd026728 CC |
1506 | if (finalize_syms && final_val == 0 |
1507 | #ifdef OBJ_XCOFF | |
1508 | /* Avoid changing symp's "within" when dealing with | |
1509 | AIX debug symbols. For some storage classes, "within" | |
1510 | have a special meaning. | |
1511 | C_DWARF should behave like on Linux, thus this check | |
1512 | isn't done to be closer. */ | |
1513 | && ((symbol_get_bfdsym (symp)->flags & BSF_DEBUGGING) == 0 | |
1514 | || (S_GET_STORAGE_CLASS (symp) == C_DWARF)) | |
1515 | #endif | |
1516 | ) | |
49309057 | 1517 | { |
5014c2d2 AM |
1518 | if (add_symbol->flags.local_symbol) |
1519 | add_symbol = local_symbol_convert (add_symbol); | |
49309057 ILT |
1520 | copy_symbol_attributes (symp, add_symbol); |
1521 | } | |
252b5132 | 1522 | |
e0890092 AM |
1523 | /* If we have equated this symbol to an undefined or common |
1524 | symbol, keep X_op set to O_symbol, and don't change | |
1525 | X_add_number. This permits the routine which writes out | |
1526 | relocation to detect this case, and convert the | |
1527 | relocation to be against the symbol to which this symbol | |
1528 | is equated. */ | |
1903f138 AM |
1529 | if (seg_left == undefined_section |
1530 | || bfd_is_com_section (seg_left) | |
7be1c489 | 1531 | #if defined (OBJ_COFF) && defined (TE_PE) |
977cdf5a NC |
1532 | || S_IS_WEAK (add_symbol) |
1533 | #endif | |
1903f138 AM |
1534 | || (finalize_syms |
1535 | && ((final_seg == expr_section | |
1536 | && seg_left != expr_section | |
1537 | && seg_left != absolute_section) | |
1538 | || symbol_shadow_p (symp)))) | |
252b5132 | 1539 | { |
6386f3a7 | 1540 | if (finalize_syms) |
252b5132 | 1541 | { |
5014c2d2 AM |
1542 | symp->x->value.X_op = O_symbol; |
1543 | symp->x->value.X_add_symbol = add_symbol; | |
1544 | symp->x->value.X_add_number = final_val; | |
e0890092 | 1545 | /* Use X_op_symbol as a flag. */ |
5014c2d2 | 1546 | symp->x->value.X_op_symbol = add_symbol; |
252b5132 | 1547 | } |
5a0ade8b | 1548 | final_seg = seg_left; |
3c0d9d71 | 1549 | final_val += symp->frag->fr_address + left; |
e0890092 | 1550 | resolved = symbol_resolved_p (add_symbol); |
3c0d9d71 | 1551 | symp->flags.resolving = 0; |
145667f8 MH |
1552 | |
1553 | if (op == O_secidx && seg_left != undefined_section) | |
1554 | { | |
1555 | final_val = 0; | |
1556 | break; | |
1557 | } | |
1558 | ||
e0890092 AM |
1559 | goto exit_dont_set_value; |
1560 | } | |
252b5132 RH |
1561 | else |
1562 | { | |
3c0d9d71 | 1563 | final_val += symp->frag->fr_address + left; |
252b5132 | 1564 | if (final_seg == expr_section || final_seg == undefined_section) |
e0890092 | 1565 | final_seg = seg_left; |
252b5132 RH |
1566 | } |
1567 | ||
49309057 | 1568 | resolved = symbol_resolved_p (add_symbol); |
06e77878 | 1569 | if (S_IS_WEAKREFR (symp)) |
22987cec | 1570 | { |
3c0d9d71 | 1571 | symp->flags.resolving = 0; |
22987cec AM |
1572 | goto exit_dont_set_value; |
1573 | } | |
252b5132 RH |
1574 | break; |
1575 | ||
1576 | case O_uminus: | |
1577 | case O_bit_not: | |
1578 | case O_logical_not: | |
6386f3a7 | 1579 | left = resolve_symbol_value (add_symbol); |
784b640d | 1580 | seg_left = S_GET_SEGMENT (add_symbol); |
252b5132 | 1581 | |
0909233e | 1582 | /* By reducing these to the relevant dyadic operator, we get |
3c0d9d71 AM |
1583 | !S -> S == 0 permitted on anything, |
1584 | -S -> 0 - S only permitted on absolute | |
1585 | ~S -> S ^ ~0 only permitted on absolute */ | |
0909233e AM |
1586 | if (op != O_logical_not && seg_left != absolute_section |
1587 | && finalize_syms) | |
5a0ade8b | 1588 | report_op_error (symp, NULL, op, add_symbol); |
1d3b2b27 | 1589 | |
0909233e AM |
1590 | if (final_seg == expr_section || final_seg == undefined_section) |
1591 | final_seg = absolute_section; | |
1d3b2b27 | 1592 | |
252b5132 RH |
1593 | if (op == O_uminus) |
1594 | left = -left; | |
1595 | else if (op == O_logical_not) | |
1596 | left = !left; | |
1597 | else | |
1598 | left = ~left; | |
1599 | ||
3c0d9d71 | 1600 | final_val += left + symp->frag->fr_address; |
252b5132 | 1601 | |
49309057 | 1602 | resolved = symbol_resolved_p (add_symbol); |
252b5132 RH |
1603 | break; |
1604 | ||
1605 | case O_multiply: | |
1606 | case O_divide: | |
1607 | case O_modulus: | |
1608 | case O_left_shift: | |
1609 | case O_right_shift: | |
1610 | case O_bit_inclusive_or: | |
1611 | case O_bit_or_not: | |
1612 | case O_bit_exclusive_or: | |
1613 | case O_bit_and: | |
1614 | case O_add: | |
1615 | case O_subtract: | |
1616 | case O_eq: | |
1617 | case O_ne: | |
1618 | case O_lt: | |
1619 | case O_le: | |
1620 | case O_ge: | |
1621 | case O_gt: | |
1622 | case O_logical_and: | |
1623 | case O_logical_or: | |
6386f3a7 AM |
1624 | left = resolve_symbol_value (add_symbol); |
1625 | right = resolve_symbol_value (op_symbol); | |
252b5132 RH |
1626 | seg_left = S_GET_SEGMENT (add_symbol); |
1627 | seg_right = S_GET_SEGMENT (op_symbol); | |
1628 | ||
1629 | /* Simplify addition or subtraction of a constant by folding the | |
1630 | constant into X_add_number. */ | |
e0890092 | 1631 | if (op == O_add) |
252b5132 RH |
1632 | { |
1633 | if (seg_right == absolute_section) | |
1634 | { | |
e0890092 | 1635 | final_val += right; |
252b5132 RH |
1636 | goto do_symbol; |
1637 | } | |
e0890092 | 1638 | else if (seg_left == absolute_section) |
252b5132 | 1639 | { |
252b5132 RH |
1640 | final_val += left; |
1641 | add_symbol = op_symbol; | |
1642 | left = right; | |
e0890092 AM |
1643 | seg_left = seg_right; |
1644 | goto do_symbol; | |
1645 | } | |
1646 | } | |
1647 | else if (op == O_subtract) | |
1648 | { | |
1649 | if (seg_right == absolute_section) | |
1650 | { | |
1651 | final_val -= right; | |
252b5132 RH |
1652 | goto do_symbol; |
1653 | } | |
1654 | } | |
1655 | ||
2d034539 | 1656 | move_seg_ok = 1; |
e0890092 AM |
1657 | /* Equality and non-equality tests are permitted on anything. |
1658 | Subtraction, and other comparison operators are permitted if | |
1659 | both operands are in the same section. Otherwise, both | |
1660 | operands must be absolute. We already handled the case of | |
1661 | addition or subtraction of a constant above. This will | |
1662 | probably need to be changed for an object file format which | |
fdef3943 | 1663 | supports arbitrary expressions. */ |
2d034539 | 1664 | if (!(seg_left == absolute_section |
5a0ade8b | 1665 | && seg_right == absolute_section) |
0909233e AM |
1666 | && !(op == O_eq || op == O_ne) |
1667 | && !((op == O_subtract | |
1668 | || op == O_lt || op == O_le || op == O_ge || op == O_gt) | |
1669 | && seg_left == seg_right | |
1670 | && (seg_left != undefined_section | |
1671 | || add_symbol == op_symbol))) | |
2d034539 NC |
1672 | { |
1673 | /* Don't emit messages unless we're finalizing the symbol value, | |
1674 | otherwise we may get the same message multiple times. */ | |
1675 | if (finalize_syms) | |
5a0ade8b | 1676 | report_op_error (symp, add_symbol, op, op_symbol); |
2d034539 NC |
1677 | /* However do not move the symbol into the absolute section |
1678 | if it cannot currently be resolved - this would confuse | |
1679 | other parts of the assembler into believing that the | |
1680 | expression had been evaluated to zero. */ | |
1681 | else | |
1682 | move_seg_ok = 0; | |
1683 | } | |
1d3b2b27 | 1684 | |
2d034539 NC |
1685 | if (move_seg_ok |
1686 | && (final_seg == expr_section || final_seg == undefined_section)) | |
0909233e | 1687 | final_seg = absolute_section; |
252b5132 RH |
1688 | |
1689 | /* Check for division by zero. */ | |
1690 | if ((op == O_divide || op == O_modulus) && right == 0) | |
1691 | { | |
1692 | /* If seg_right is not absolute_section, then we've | |
e0890092 | 1693 | already issued a warning about using a bad symbol. */ |
6386f3a7 | 1694 | if (seg_right == absolute_section && finalize_syms) |
252b5132 | 1695 | { |
3b4dbbbf | 1696 | const char *file; |
252b5132 RH |
1697 | unsigned int line; |
1698 | ||
1699 | if (expr_symbol_where (symp, &file, &line)) | |
1700 | as_bad_where (file, line, _("division by zero")); | |
1701 | else | |
0e389e77 | 1702 | as_bad (_("division by zero when setting `%s'"), |
252b5132 RH |
1703 | S_GET_NAME (symp)); |
1704 | } | |
1705 | ||
1706 | right = 1; | |
1707 | } | |
d8d6da13 AM |
1708 | if ((op == O_left_shift || op == O_right_shift) |
1709 | && (valueT) right >= sizeof (valueT) * CHAR_BIT) | |
1710 | { | |
1711 | as_warn_value_out_of_range (_("shift count"), right, 0, | |
1712 | sizeof (valueT) * CHAR_BIT - 1, | |
1713 | NULL, 0); | |
1714 | left = right = 0; | |
1715 | } | |
252b5132 | 1716 | |
5014c2d2 | 1717 | switch (symp->x->value.X_op) |
252b5132 RH |
1718 | { |
1719 | case O_multiply: left *= right; break; | |
1720 | case O_divide: left /= right; break; | |
1721 | case O_modulus: left %= right; break; | |
d8d6da13 AM |
1722 | case O_left_shift: |
1723 | left = (valueT) left << (valueT) right; break; | |
1724 | case O_right_shift: | |
1725 | left = (valueT) left >> (valueT) right; break; | |
252b5132 RH |
1726 | case O_bit_inclusive_or: left |= right; break; |
1727 | case O_bit_or_not: left |= ~right; break; | |
1728 | case O_bit_exclusive_or: left ^= right; break; | |
1729 | case O_bit_and: left &= right; break; | |
1730 | case O_add: left += right; break; | |
1731 | case O_subtract: left -= right; break; | |
e0890092 AM |
1732 | case O_eq: |
1733 | case O_ne: | |
1734 | left = (left == right && seg_left == seg_right | |
1735 | && (seg_left != undefined_section | |
1736 | || add_symbol == op_symbol) | |
1737 | ? ~ (offsetT) 0 : 0); | |
5014c2d2 | 1738 | if (symp->x->value.X_op == O_ne) |
e0890092 AM |
1739 | left = ~left; |
1740 | break; | |
252b5132 RH |
1741 | case O_lt: left = left < right ? ~ (offsetT) 0 : 0; break; |
1742 | case O_le: left = left <= right ? ~ (offsetT) 0 : 0; break; | |
1743 | case O_ge: left = left >= right ? ~ (offsetT) 0 : 0; break; | |
1744 | case O_gt: left = left > right ? ~ (offsetT) 0 : 0; break; | |
1745 | case O_logical_and: left = left && right; break; | |
1746 | case O_logical_or: left = left || right; break; | |
6d6ad65b NC |
1747 | |
1748 | case O_illegal: | |
1749 | case O_absent: | |
1750 | case O_constant: | |
1751 | /* See PR 20895 for a reproducer. */ | |
1752 | as_bad (_("Invalid operation on symbol")); | |
1753 | goto exit_dont_set_value; | |
1754 | ||
1755 | default: | |
1756 | abort (); | |
252b5132 RH |
1757 | } |
1758 | ||
3c0d9d71 | 1759 | final_val += symp->frag->fr_address + left; |
252b5132 | 1760 | if (final_seg == expr_section || final_seg == undefined_section) |
784b640d AM |
1761 | { |
1762 | if (seg_left == undefined_section | |
1763 | || seg_right == undefined_section) | |
1764 | final_seg = undefined_section; | |
1765 | else if (seg_left == absolute_section) | |
1766 | final_seg = seg_right; | |
1767 | else | |
1768 | final_seg = seg_left; | |
1769 | } | |
49309057 ILT |
1770 | resolved = (symbol_resolved_p (add_symbol) |
1771 | && symbol_resolved_p (op_symbol)); | |
7c743825 | 1772 | break; |
252b5132 | 1773 | |
252b5132 RH |
1774 | case O_big: |
1775 | case O_illegal: | |
1776 | /* Give an error (below) if not in expr_section. We don't | |
1777 | want to worry about expr_section symbols, because they | |
1778 | are fictional (they are created as part of expression | |
1779 | resolution), and any problems may not actually mean | |
1780 | anything. */ | |
1781 | break; | |
1782 | } | |
1783 | ||
3c0d9d71 | 1784 | symp->flags.resolving = 0; |
252b5132 RH |
1785 | } |
1786 | ||
6386f3a7 | 1787 | if (finalize_syms) |
05bdb37e | 1788 | S_SET_VALUE (symp, final_val); |
252b5132 | 1789 | |
dc1e8a47 | 1790 | exit_dont_set_value: |
05bdb37e AM |
1791 | /* Always set the segment, even if not finalizing the value. |
1792 | The segment is used to determine whether a symbol is defined. */ | |
05bdb37e | 1793 | S_SET_SEGMENT (symp, final_seg); |
252b5132 | 1794 | |
252b5132 | 1795 | /* Don't worry if we can't resolve an expr_section symbol. */ |
6386f3a7 | 1796 | if (finalize_syms) |
252b5132 RH |
1797 | { |
1798 | if (resolved) | |
3c0d9d71 | 1799 | symp->flags.resolved = 1; |
252b5132 RH |
1800 | else if (S_GET_SEGMENT (symp) != expr_section) |
1801 | { | |
0e389e77 | 1802 | as_bad (_("can't resolve value for symbol `%s'"), |
7c743825 | 1803 | S_GET_NAME (symp)); |
3c0d9d71 | 1804 | symp->flags.resolved = 1; |
252b5132 RH |
1805 | } |
1806 | } | |
1807 | ||
1808 | return final_val; | |
1809 | } | |
1810 | ||
49309057 ILT |
1811 | /* A static function passed to hash_traverse. */ |
1812 | ||
d3b740ca ML |
1813 | static int |
1814 | resolve_local_symbol (void **slot, void *arg ATTRIBUTE_UNUSED) | |
49309057 | 1815 | { |
d3b740ca | 1816 | symbol_entry_t *entry = *((symbol_entry_t **) slot); |
5014c2d2 AM |
1817 | if (entry->sy.flags.local_symbol) |
1818 | resolve_symbol_value (&entry->sy); | |
d3b740ca ML |
1819 | |
1820 | return 1; | |
49309057 ILT |
1821 | } |
1822 | ||
49309057 ILT |
1823 | /* Resolve all local symbols. */ |
1824 | ||
1825 | void | |
74937d39 | 1826 | resolve_local_symbol_values (void) |
49309057 | 1827 | { |
0edfd298 | 1828 | htab_traverse_noresize (sy_hash, resolve_local_symbol, NULL); |
49309057 ILT |
1829 | } |
1830 | ||
9497f5ac NC |
1831 | /* Obtain the current value of a symbol without changing any |
1832 | sub-expressions used. */ | |
1833 | ||
1834 | int | |
2e1e12b1 | 1835 | snapshot_symbol (symbolS **symbolPP, valueT *valueP, segT *segP, fragS **fragPP) |
9497f5ac | 1836 | { |
2e1e12b1 JB |
1837 | symbolS *symbolP = *symbolPP; |
1838 | ||
5014c2d2 | 1839 | if (symbolP->flags.local_symbol) |
9497f5ac NC |
1840 | { |
1841 | struct local_symbol *locsym = (struct local_symbol *) symbolP; | |
1842 | ||
3c0d9d71 AM |
1843 | *valueP = locsym->value; |
1844 | *segP = locsym->section; | |
5014c2d2 | 1845 | *fragPP = locsym->frag; |
9497f5ac NC |
1846 | } |
1847 | else | |
1848 | { | |
5014c2d2 | 1849 | expressionS exp = symbolP->x->value; |
9497f5ac | 1850 | |
3c0d9d71 | 1851 | if (!symbolP->flags.resolved && exp.X_op != O_illegal) |
9497f5ac NC |
1852 | { |
1853 | int resolved; | |
1854 | ||
3c0d9d71 | 1855 | if (symbolP->flags.resolving) |
9497f5ac | 1856 | return 0; |
3c0d9d71 | 1857 | symbolP->flags.resolving = 1; |
91d6fa6a | 1858 | resolved = resolve_expression (&exp); |
3c0d9d71 | 1859 | symbolP->flags.resolving = 0; |
9497f5ac NC |
1860 | if (!resolved) |
1861 | return 0; | |
1862 | ||
91d6fa6a | 1863 | switch (exp.X_op) |
9497f5ac NC |
1864 | { |
1865 | case O_constant: | |
1866 | case O_register: | |
2e1e12b1 | 1867 | if (!symbol_equated_p (symbolP)) |
9497f5ac | 1868 | break; |
2b0f3761 | 1869 | /* Fallthru. */ |
9497f5ac NC |
1870 | case O_symbol: |
1871 | case O_symbol_rva: | |
91d6fa6a | 1872 | symbolP = exp.X_add_symbol; |
9497f5ac NC |
1873 | break; |
1874 | default: | |
1875 | return 0; | |
1876 | } | |
1877 | } | |
1878 | ||
d96eea71 | 1879 | *symbolPP = symbolP; |
e78bb25c NC |
1880 | |
1881 | /* A bogus input file can result in resolve_expression() | |
1882 | generating a local symbol, so we have to check again. */ | |
5014c2d2 | 1883 | if (symbolP->flags.local_symbol) |
e78bb25c NC |
1884 | { |
1885 | struct local_symbol *locsym = (struct local_symbol *) symbolP; | |
1886 | ||
3c0d9d71 AM |
1887 | *valueP = locsym->value; |
1888 | *segP = locsym->section; | |
5014c2d2 | 1889 | *fragPP = locsym->frag; |
e78bb25c NC |
1890 | } |
1891 | else | |
1892 | { | |
1893 | *valueP = exp.X_add_number; | |
1894 | *segP = symbolP->bsym->section; | |
3c0d9d71 | 1895 | *fragPP = symbolP->frag; |
e78bb25c | 1896 | } |
9497f5ac NC |
1897 | |
1898 | if (*segP == expr_section) | |
91d6fa6a | 1899 | switch (exp.X_op) |
9497f5ac NC |
1900 | { |
1901 | case O_constant: *segP = absolute_section; break; | |
1902 | case O_register: *segP = reg_section; break; | |
1903 | default: break; | |
1904 | } | |
1905 | } | |
1906 | ||
1907 | return 1; | |
1908 | } | |
1909 | ||
252b5132 RH |
1910 | /* Dollar labels look like a number followed by a dollar sign. Eg, "42$". |
1911 | They are *really* local. That is, they go out of scope whenever we see a | |
1912 | label that isn't local. Also, like fb labels, there can be multiple | |
1913 | instances of a dollar label. Therefor, we name encode each instance with | |
1914 | the instance number, keep a list of defined symbols separate from the real | |
1915 | symbol table, and we treat these buggers as a sparse array. */ | |
1916 | ||
19f7966e AM |
1917 | typedef unsigned int dollar_ent; |
1918 | static dollar_ent *dollar_labels; | |
1919 | static dollar_ent *dollar_label_instances; | |
252b5132 | 1920 | static char *dollar_label_defines; |
30b940a0 AM |
1921 | static size_t dollar_label_count; |
1922 | static size_t dollar_label_max; | |
252b5132 | 1923 | |
7c743825 | 1924 | int |
19f7966e | 1925 | dollar_label_defined (unsigned int label) |
252b5132 | 1926 | { |
19f7966e | 1927 | dollar_ent *i; |
252b5132 RH |
1928 | |
1929 | know ((dollar_labels != NULL) || (dollar_label_count == 0)); | |
1930 | ||
1931 | for (i = dollar_labels; i < dollar_labels + dollar_label_count; ++i) | |
1932 | if (*i == label) | |
1933 | return dollar_label_defines[i - dollar_labels]; | |
1934 | ||
7c743825 | 1935 | /* If we get here, label isn't defined. */ |
252b5132 | 1936 | return 0; |
7c743825 | 1937 | } |
252b5132 | 1938 | |
19f7966e AM |
1939 | static unsigned int |
1940 | dollar_label_instance (unsigned int label) | |
252b5132 | 1941 | { |
19f7966e | 1942 | dollar_ent *i; |
252b5132 RH |
1943 | |
1944 | know ((dollar_labels != NULL) || (dollar_label_count == 0)); | |
1945 | ||
1946 | for (i = dollar_labels; i < dollar_labels + dollar_label_count; ++i) | |
1947 | if (*i == label) | |
1948 | return (dollar_label_instances[i - dollar_labels]); | |
1949 | ||
7c743825 KH |
1950 | /* If we get here, we haven't seen the label before. |
1951 | Therefore its instance count is zero. */ | |
252b5132 RH |
1952 | return 0; |
1953 | } | |
1954 | ||
7c743825 | 1955 | void |
74937d39 | 1956 | dollar_label_clear (void) |
252b5132 | 1957 | { |
30b940a0 AM |
1958 | if (dollar_label_count) |
1959 | memset (dollar_label_defines, '\0', dollar_label_count); | |
252b5132 RH |
1960 | } |
1961 | ||
1962 | #define DOLLAR_LABEL_BUMP_BY 10 | |
1963 | ||
7c743825 | 1964 | void |
19f7966e | 1965 | define_dollar_label (unsigned int label) |
252b5132 | 1966 | { |
19f7966e | 1967 | dollar_ent *i; |
252b5132 RH |
1968 | |
1969 | for (i = dollar_labels; i < dollar_labels + dollar_label_count; ++i) | |
1970 | if (*i == label) | |
1971 | { | |
1972 | ++dollar_label_instances[i - dollar_labels]; | |
1973 | dollar_label_defines[i - dollar_labels] = 1; | |
1974 | return; | |
1975 | } | |
1976 | ||
7c743825 | 1977 | /* If we get to here, we don't have label listed yet. */ |
252b5132 RH |
1978 | |
1979 | if (dollar_labels == NULL) | |
1980 | { | |
19f7966e AM |
1981 | dollar_labels = XNEWVEC (dollar_ent, DOLLAR_LABEL_BUMP_BY); |
1982 | dollar_label_instances = XNEWVEC (dollar_ent, DOLLAR_LABEL_BUMP_BY); | |
add39d23 | 1983 | dollar_label_defines = XNEWVEC (char, DOLLAR_LABEL_BUMP_BY); |
252b5132 RH |
1984 | dollar_label_max = DOLLAR_LABEL_BUMP_BY; |
1985 | dollar_label_count = 0; | |
1986 | } | |
1987 | else if (dollar_label_count == dollar_label_max) | |
1988 | { | |
1989 | dollar_label_max += DOLLAR_LABEL_BUMP_BY; | |
19f7966e AM |
1990 | dollar_labels = XRESIZEVEC (dollar_ent, dollar_labels, |
1991 | dollar_label_max); | |
1992 | dollar_label_instances = XRESIZEVEC (dollar_ent, | |
1993 | dollar_label_instances, | |
1994 | dollar_label_max); | |
add39d23 TS |
1995 | dollar_label_defines = XRESIZEVEC (char, dollar_label_defines, |
1996 | dollar_label_max); | |
7c743825 | 1997 | } /* if we needed to grow */ |
252b5132 RH |
1998 | |
1999 | dollar_labels[dollar_label_count] = label; | |
2000 | dollar_label_instances[dollar_label_count] = 1; | |
2001 | dollar_label_defines[dollar_label_count] = 1; | |
2002 | ++dollar_label_count; | |
2003 | } | |
2004 | ||
7c743825 KH |
2005 | /* Caller must copy returned name: we re-use the area for the next name. |
2006 | ||
2b0f3761 | 2007 | The mth occurrence of label n: is turned into the symbol "Ln^Am" |
7c743825 KH |
2008 | where n is the label number and m is the instance number. "L" makes |
2009 | it a label discarded unless debugging and "^A"('\1') ensures no | |
2010 | ordinary symbol SHOULD get the same name as a local label | |
2011 | symbol. The first "4:" is "L4^A1" - the m numbers begin at 1. | |
2012 | ||
2013 | fb labels get the same treatment, except that ^B is used in place | |
19f7966e | 2014 | of ^A. |
7c743825 | 2015 | |
19f7966e AM |
2016 | AUGEND is 0 for current instance, 1 for new instance. */ |
2017 | ||
2018 | char * | |
2019 | dollar_label_name (unsigned int n, unsigned int augend) | |
252b5132 | 2020 | { |
7c743825 | 2021 | /* Returned to caller, then copied. Used for created names ("4f"). */ |
252b5132 | 2022 | static char symbol_name_build[24]; |
19f7966e | 2023 | char *p = symbol_name_build; |
252b5132 | 2024 | |
f84dd1f0 NC |
2025 | #ifdef LOCAL_LABEL_PREFIX |
2026 | *p++ = LOCAL_LABEL_PREFIX; | |
2027 | #endif | |
19f7966e AM |
2028 | sprintf (p, "L%u%c%u", |
2029 | n, DOLLAR_LABEL_CHAR, dollar_label_instance (n) + augend); | |
252b5132 RH |
2030 | return symbol_name_build; |
2031 | } | |
2032 | ||
47eebc20 | 2033 | /* Somebody else's idea of local labels. They are made by "n:" where n |
7c743825 KH |
2034 | is any decimal digit. Refer to them with |
2035 | "nb" for previous (backward) n: | |
2036 | or "nf" for next (forward) n:. | |
2037 | ||
2038 | We do a little better and let n be any number, not just a single digit, but | |
2039 | since the other guy's assembler only does ten, we treat the first ten | |
2040 | specially. | |
2041 | ||
2042 | Like someone else's assembler, we have one set of local label counters for | |
2043 | entire assembly, not one set per (sub)segment like in most assemblers. This | |
2044 | implies that one can refer to a label in another segment, and indeed some | |
2045 | crufty compilers have done just that. | |
2046 | ||
2047 | Since there could be a LOT of these things, treat them as a sparse | |
2048 | array. */ | |
252b5132 RH |
2049 | |
2050 | #define FB_LABEL_SPECIAL (10) | |
2051 | ||
19f7966e AM |
2052 | typedef unsigned int fb_ent; |
2053 | static fb_ent fb_low_counter[FB_LABEL_SPECIAL]; | |
2054 | static fb_ent *fb_labels; | |
2055 | static fb_ent *fb_label_instances; | |
2056 | static size_t fb_label_count; | |
2057 | static size_t fb_label_max; | |
252b5132 | 2058 | |
7c743825 | 2059 | /* This must be more than FB_LABEL_SPECIAL. */ |
252b5132 RH |
2060 | #define FB_LABEL_BUMP_BY (FB_LABEL_SPECIAL + 6) |
2061 | ||
7c743825 | 2062 | static void |
74937d39 | 2063 | fb_label_init (void) |
252b5132 RH |
2064 | { |
2065 | memset ((void *) fb_low_counter, '\0', sizeof (fb_low_counter)); | |
7c743825 | 2066 | } |
252b5132 | 2067 | |
7c743825 KH |
2068 | /* Add one to the instance number of this fb label. */ |
2069 | ||
2070 | void | |
19f7966e | 2071 | fb_label_instance_inc (unsigned int label) |
252b5132 | 2072 | { |
19f7966e | 2073 | fb_ent *i; |
252b5132 | 2074 | |
19f7966e | 2075 | if (label < FB_LABEL_SPECIAL) |
252b5132 RH |
2076 | { |
2077 | ++fb_low_counter[label]; | |
2078 | return; | |
2079 | } | |
2080 | ||
2081 | if (fb_labels != NULL) | |
2082 | { | |
2083 | for (i = fb_labels + FB_LABEL_SPECIAL; | |
2084 | i < fb_labels + fb_label_count; ++i) | |
2085 | { | |
2086 | if (*i == label) | |
2087 | { | |
2088 | ++fb_label_instances[i - fb_labels]; | |
2089 | return; | |
7c743825 KH |
2090 | } /* if we find it */ |
2091 | } /* for each existing label */ | |
252b5132 RH |
2092 | } |
2093 | ||
7c743825 | 2094 | /* If we get to here, we don't have label listed yet. */ |
252b5132 RH |
2095 | |
2096 | if (fb_labels == NULL) | |
2097 | { | |
19f7966e AM |
2098 | fb_labels = XNEWVEC (fb_ent, FB_LABEL_BUMP_BY); |
2099 | fb_label_instances = XNEWVEC (fb_ent, FB_LABEL_BUMP_BY); | |
252b5132 RH |
2100 | fb_label_max = FB_LABEL_BUMP_BY; |
2101 | fb_label_count = FB_LABEL_SPECIAL; | |
2102 | ||
2103 | } | |
2104 | else if (fb_label_count == fb_label_max) | |
2105 | { | |
2106 | fb_label_max += FB_LABEL_BUMP_BY; | |
19f7966e AM |
2107 | fb_labels = XRESIZEVEC (fb_ent, fb_labels, fb_label_max); |
2108 | fb_label_instances = XRESIZEVEC (fb_ent, fb_label_instances, | |
2109 | fb_label_max); | |
7c743825 | 2110 | } /* if we needed to grow */ |
252b5132 RH |
2111 | |
2112 | fb_labels[fb_label_count] = label; | |
2113 | fb_label_instances[fb_label_count] = 1; | |
2114 | ++fb_label_count; | |
2115 | } | |
2116 | ||
19f7966e AM |
2117 | static unsigned int |
2118 | fb_label_instance (unsigned int label) | |
252b5132 | 2119 | { |
19f7966e | 2120 | fb_ent *i; |
252b5132 | 2121 | |
19f7966e AM |
2122 | if (label < FB_LABEL_SPECIAL) |
2123 | return (fb_low_counter[label]); | |
252b5132 RH |
2124 | |
2125 | if (fb_labels != NULL) | |
2126 | { | |
2127 | for (i = fb_labels + FB_LABEL_SPECIAL; | |
2128 | i < fb_labels + fb_label_count; ++i) | |
2129 | { | |
2130 | if (*i == label) | |
19f7966e AM |
2131 | return (fb_label_instances[i - fb_labels]); |
2132 | } | |
252b5132 RH |
2133 | } |
2134 | ||
2135 | /* We didn't find the label, so this must be a reference to the | |
2136 | first instance. */ | |
2137 | return 0; | |
2138 | } | |
2139 | ||
7c743825 KH |
2140 | /* Caller must copy returned name: we re-use the area for the next name. |
2141 | ||
2b0f3761 | 2142 | The mth occurrence of label n: is turned into the symbol "Ln^Bm" |
7c743825 KH |
2143 | where n is the label number and m is the instance number. "L" makes |
2144 | it a label discarded unless debugging and "^B"('\2') ensures no | |
2145 | ordinary symbol SHOULD get the same name as a local label | |
2146 | symbol. The first "4:" is "L4^B1" - the m numbers begin at 1. | |
2147 | ||
2148 | dollar labels get the same treatment, except that ^A is used in | |
19f7966e AM |
2149 | place of ^B. |
2150 | ||
2151 | AUGEND is 0 for nb, 1 for n:, nf. */ | |
7c743825 | 2152 | |
19f7966e AM |
2153 | char * |
2154 | fb_label_name (unsigned int n, unsigned int augend) | |
252b5132 | 2155 | { |
7c743825 | 2156 | /* Returned to caller, then copied. Used for created names ("4f"). */ |
252b5132 | 2157 | static char symbol_name_build[24]; |
19f7966e | 2158 | char *p = symbol_name_build; |
252b5132 | 2159 | |
a76903bf | 2160 | #ifdef TC_MMIX |
19f7966e | 2161 | know (augend <= 2 /* See mmix_fb_label. */); |
a76903bf | 2162 | #else |
19f7966e | 2163 | know (augend <= 1); |
a76903bf | 2164 | #endif |
19f7966e | 2165 | |
aa257fcd NC |
2166 | #ifdef LOCAL_LABEL_PREFIX |
2167 | *p++ = LOCAL_LABEL_PREFIX; | |
2168 | #endif | |
19f7966e AM |
2169 | sprintf (p, "L%u%c%u", |
2170 | n, LOCAL_LABEL_CHAR, fb_label_instance (n) + augend); | |
2171 | return symbol_name_build; | |
7c743825 | 2172 | } |
252b5132 | 2173 | |
7c743825 KH |
2174 | /* Decode name that may have been generated by foo_label_name() above. |
2175 | If the name wasn't generated by foo_label_name(), then return it | |
2176 | unaltered. This is used for error messages. */ | |
252b5132 RH |
2177 | |
2178 | char * | |
74937d39 | 2179 | decode_local_label_name (char *s) |
252b5132 RH |
2180 | { |
2181 | char *p; | |
2182 | char *symbol_decode; | |
2183 | int label_number; | |
2184 | int instance_number; | |
cd0bbe6e | 2185 | const char *type; |
d95767bf | 2186 | const char *message_format; |
91d6fa6a | 2187 | int lindex = 0; |
43ad3147 | 2188 | |
aa257fcd | 2189 | #ifdef LOCAL_LABEL_PREFIX |
91d6fa6a NC |
2190 | if (s[lindex] == LOCAL_LABEL_PREFIX) |
2191 | ++lindex; | |
aa257fcd | 2192 | #endif |
43ad3147 | 2193 | |
91d6fa6a | 2194 | if (s[lindex] != 'L') |
252b5132 RH |
2195 | return s; |
2196 | ||
91d6fa6a | 2197 | for (label_number = 0, p = s + lindex + 1; ISDIGIT (*p); ++p) |
252b5132 RH |
2198 | label_number = (10 * label_number) + *p - '0'; |
2199 | ||
aa257fcd | 2200 | if (*p == DOLLAR_LABEL_CHAR) |
252b5132 | 2201 | type = "dollar"; |
aa257fcd | 2202 | else if (*p == LOCAL_LABEL_CHAR) |
252b5132 RH |
2203 | type = "fb"; |
2204 | else | |
2205 | return s; | |
2206 | ||
3882b010 | 2207 | for (instance_number = 0, p++; ISDIGIT (*p); ++p) |
252b5132 RH |
2208 | instance_number = (10 * instance_number) + *p - '0'; |
2209 | ||
d95767bf | 2210 | message_format = _("\"%d\" (instance number %d of a %s label)"); |
c30081c1 | 2211 | symbol_decode = notes_alloc (strlen (message_format) + 30); |
252b5132 RH |
2212 | sprintf (symbol_decode, message_format, label_number, instance_number, type); |
2213 | ||
2214 | return symbol_decode; | |
2215 | } | |
2216 | ||
2217 | /* Get the value of a symbol. */ | |
2218 | ||
2219 | valueT | |
74937d39 | 2220 | S_GET_VALUE (symbolS *s) |
252b5132 | 2221 | { |
5014c2d2 | 2222 | if (s->flags.local_symbol) |
ac62c346 | 2223 | return resolve_symbol_value (s); |
49309057 | 2224 | |
3c0d9d71 | 2225 | if (!s->flags.resolved) |
e46d99eb | 2226 | { |
6386f3a7 AM |
2227 | valueT val = resolve_symbol_value (s); |
2228 | if (!finalize_syms) | |
e46d99eb AM |
2229 | return val; |
2230 | } | |
06e77878 | 2231 | if (S_IS_WEAKREFR (s)) |
5014c2d2 | 2232 | return S_GET_VALUE (s->x->value.X_add_symbol); |
06e77878 | 2233 | |
5014c2d2 | 2234 | if (s->x->value.X_op != O_constant) |
252b5132 | 2235 | { |
3c0d9d71 | 2236 | if (! s->flags.resolved |
5014c2d2 | 2237 | || s->x->value.X_op != O_symbol |
252b5132 | 2238 | || (S_IS_DEFINED (s) && ! S_IS_COMMON (s))) |
029b1ee8 NC |
2239 | { |
2240 | if (strcmp (S_GET_NAME (s), FAKE_LABEL_NAME) == 0) | |
2241 | as_bad (_("expression is too complex to be resolved")); | |
2242 | else | |
2243 | as_bad (_("attempt to get value of unresolved symbol `%s'"), | |
2244 | S_GET_NAME (s)); | |
2245 | } | |
252b5132 | 2246 | } |
5014c2d2 | 2247 | return (valueT) s->x->value.X_add_number; |
252b5132 RH |
2248 | } |
2249 | ||
2250 | /* Set the value of a symbol. */ | |
2251 | ||
2252 | void | |
74937d39 | 2253 | S_SET_VALUE (symbolS *s, valueT val) |
252b5132 | 2254 | { |
5014c2d2 | 2255 | if (s->flags.local_symbol) |
49309057 | 2256 | { |
3c0d9d71 | 2257 | ((struct local_symbol *) s)->value = val; |
49309057 ILT |
2258 | return; |
2259 | } | |
2260 | ||
5014c2d2 AM |
2261 | s->x->value.X_op = O_constant; |
2262 | s->x->value.X_add_number = (offsetT) val; | |
2263 | s->x->value.X_unsigned = 0; | |
06e77878 | 2264 | S_CLEAR_WEAKREFR (s); |
252b5132 RH |
2265 | } |
2266 | ||
2267 | void | |
74937d39 | 2268 | copy_symbol_attributes (symbolS *dest, symbolS *src) |
252b5132 | 2269 | { |
5014c2d2 AM |
2270 | if (dest->flags.local_symbol) |
2271 | dest = local_symbol_convert (dest); | |
2272 | if (src->flags.local_symbol) | |
2273 | src = local_symbol_convert (src); | |
49309057 | 2274 | |
252b5132 RH |
2275 | /* In an expression, transfer the settings of these flags. |
2276 | The user can override later, of course. */ | |
ad04f5ce L |
2277 | #define COPIED_SYMFLAGS (BSF_FUNCTION | BSF_OBJECT \ |
2278 | | BSF_GNU_INDIRECT_FUNCTION) | |
252b5132 | 2279 | dest->bsym->flags |= src->bsym->flags & COPIED_SYMFLAGS; |
252b5132 RH |
2280 | |
2281 | #ifdef OBJ_COPY_SYMBOL_ATTRIBUTES | |
2282 | OBJ_COPY_SYMBOL_ATTRIBUTES (dest, src); | |
2283 | #endif | |
794ba86a DJ |
2284 | |
2285 | #ifdef TC_COPY_SYMBOL_ATTRIBUTES | |
2286 | TC_COPY_SYMBOL_ATTRIBUTES (dest, src); | |
2287 | #endif | |
252b5132 RH |
2288 | } |
2289 | ||
252b5132 | 2290 | int |
74937d39 | 2291 | S_IS_FUNCTION (symbolS *s) |
252b5132 | 2292 | { |
49309057 ILT |
2293 | flagword flags; |
2294 | ||
5014c2d2 | 2295 | if (s->flags.local_symbol) |
49309057 ILT |
2296 | return 0; |
2297 | ||
2298 | flags = s->bsym->flags; | |
252b5132 RH |
2299 | |
2300 | return (flags & BSF_FUNCTION) != 0; | |
2301 | } | |
2302 | ||
2303 | int | |
74937d39 | 2304 | S_IS_EXTERNAL (symbolS *s) |
252b5132 | 2305 | { |
49309057 ILT |
2306 | flagword flags; |
2307 | ||
5014c2d2 | 2308 | if (s->flags.local_symbol) |
49309057 ILT |
2309 | return 0; |
2310 | ||
2311 | flags = s->bsym->flags; | |
252b5132 | 2312 | |
7c743825 | 2313 | /* Sanity check. */ |
252b5132 RH |
2314 | if ((flags & BSF_LOCAL) && (flags & BSF_GLOBAL)) |
2315 | abort (); | |
2316 | ||
2317 | return (flags & BSF_GLOBAL) != 0; | |
2318 | } | |
2319 | ||
2320 | int | |
74937d39 | 2321 | S_IS_WEAK (symbolS *s) |
252b5132 | 2322 | { |
5014c2d2 | 2323 | if (s->flags.local_symbol) |
49309057 | 2324 | return 0; |
06e77878 AO |
2325 | /* Conceptually, a weakrefr is weak if the referenced symbol is. We |
2326 | could probably handle a WEAKREFR as always weak though. E.g., if | |
2327 | the referenced symbol has lost its weak status, there's no reason | |
2328 | to keep handling the weakrefr as if it was weak. */ | |
2329 | if (S_IS_WEAKREFR (s)) | |
5014c2d2 | 2330 | return S_IS_WEAK (s->x->value.X_add_symbol); |
252b5132 RH |
2331 | return (s->bsym->flags & BSF_WEAK) != 0; |
2332 | } | |
2333 | ||
06e77878 AO |
2334 | int |
2335 | S_IS_WEAKREFR (symbolS *s) | |
2336 | { | |
5014c2d2 | 2337 | if (s->flags.local_symbol) |
06e77878 | 2338 | return 0; |
3c0d9d71 | 2339 | return s->flags.weakrefr != 0; |
06e77878 AO |
2340 | } |
2341 | ||
2342 | int | |
2343 | S_IS_WEAKREFD (symbolS *s) | |
2344 | { | |
5014c2d2 | 2345 | if (s->flags.local_symbol) |
06e77878 | 2346 | return 0; |
3c0d9d71 | 2347 | return s->flags.weakrefd != 0; |
06e77878 AO |
2348 | } |
2349 | ||
252b5132 | 2350 | int |
74937d39 | 2351 | S_IS_COMMON (symbolS *s) |
252b5132 | 2352 | { |
5014c2d2 | 2353 | if (s->flags.local_symbol) |
49309057 | 2354 | return 0; |
252b5132 RH |
2355 | return bfd_is_com_section (s->bsym->section); |
2356 | } | |
2357 | ||
2358 | int | |
74937d39 | 2359 | S_IS_DEFINED (symbolS *s) |
252b5132 | 2360 | { |
5014c2d2 | 2361 | if (s->flags.local_symbol) |
3c0d9d71 | 2362 | return ((struct local_symbol *) s)->section != undefined_section; |
252b5132 RH |
2363 | return s->bsym->section != undefined_section; |
2364 | } | |
2365 | ||
a161fe53 AM |
2366 | |
2367 | #ifndef EXTERN_FORCE_RELOC | |
2368 | #define EXTERN_FORCE_RELOC IS_ELF | |
2369 | #endif | |
2370 | ||
2371 | /* Return true for symbols that should not be reduced to section | |
2372 | symbols or eliminated from expressions, because they may be | |
2373 | overridden by the linker. */ | |
2374 | int | |
74937d39 | 2375 | S_FORCE_RELOC (symbolS *s, int strict) |
a161fe53 | 2376 | { |
f2d830a5 | 2377 | segT sec; |
5014c2d2 | 2378 | if (s->flags.local_symbol) |
3c0d9d71 | 2379 | sec = ((struct local_symbol *) s)->section; |
f2d830a5 AM |
2380 | else |
2381 | { | |
2382 | if ((strict | |
ae6063d4 AM |
2383 | && ((s->bsym->flags & BSF_WEAK) != 0 |
2384 | || (EXTERN_FORCE_RELOC | |
2385 | && (s->bsym->flags & BSF_GLOBAL) != 0))) | |
f2d830a5 | 2386 | || (s->bsym->flags & BSF_GNU_INDIRECT_FUNCTION) != 0) |
5b7c81bd | 2387 | return true; |
f2d830a5 AM |
2388 | sec = s->bsym->section; |
2389 | } | |
2390 | return bfd_is_und_section (sec) || bfd_is_com_section (sec); | |
a161fe53 AM |
2391 | } |
2392 | ||
252b5132 | 2393 | int |
74937d39 | 2394 | S_IS_DEBUG (symbolS *s) |
252b5132 | 2395 | { |
5014c2d2 | 2396 | if (s->flags.local_symbol) |
49309057 | 2397 | return 0; |
252b5132 RH |
2398 | if (s->bsym->flags & BSF_DEBUGGING) |
2399 | return 1; | |
2400 | return 0; | |
2401 | } | |
2402 | ||
2403 | int | |
74937d39 | 2404 | S_IS_LOCAL (symbolS *s) |
252b5132 | 2405 | { |
49309057 | 2406 | flagword flags; |
252b5132 RH |
2407 | const char *name; |
2408 | ||
5014c2d2 | 2409 | if (s->flags.local_symbol) |
49309057 ILT |
2410 | return 1; |
2411 | ||
2412 | flags = s->bsym->flags; | |
2413 | ||
7c743825 | 2414 | /* Sanity check. */ |
252b5132 RH |
2415 | if ((flags & BSF_LOCAL) && (flags & BSF_GLOBAL)) |
2416 | abort (); | |
2417 | ||
e6f7f6d1 | 2418 | if (bfd_asymbol_section (s->bsym) == reg_section) |
252b5132 RH |
2419 | return 1; |
2420 | ||
2421 | if (flag_strip_local_absolute | |
bb82af9f NC |
2422 | /* Keep BSF_FILE symbols in order to allow debuggers to identify |
2423 | the source file even when the object file is stripped. */ | |
2424 | && (flags & (BSF_GLOBAL | BSF_FILE)) == 0 | |
e6f7f6d1 | 2425 | && bfd_asymbol_section (s->bsym) == absolute_section) |
252b5132 RH |
2426 | return 1; |
2427 | ||
2428 | name = S_GET_NAME (s); | |
2429 | return (name != NULL | |
2430 | && ! S_IS_DEBUG (s) | |
aa257fcd NC |
2431 | && (strchr (name, DOLLAR_LABEL_CHAR) |
2432 | || strchr (name, LOCAL_LABEL_CHAR) | |
2469b3c5 JW |
2433 | #if FAKE_LABEL_CHAR != DOLLAR_LABEL_CHAR |
2434 | || strchr (name, FAKE_LABEL_CHAR) | |
2435 | #endif | |
df58fc94 | 2436 | || TC_LABEL_IS_LOCAL (name) |
252b5132 RH |
2437 | || (! flag_keep_locals |
2438 | && (bfd_is_local_label (stdoutput, s->bsym) | |
2439 | || (flag_mri | |
2440 | && name[0] == '?' | |
2441 | && name[1] == '?'))))); | |
2442 | } | |
2443 | ||
252b5132 | 2444 | int |
74937d39 | 2445 | S_IS_STABD (symbolS *s) |
252b5132 RH |
2446 | { |
2447 | return S_GET_NAME (s) == 0; | |
2448 | } | |
2449 | ||
6885131b AM |
2450 | int |
2451 | S_CAN_BE_REDEFINED (const symbolS *s) | |
2452 | { | |
5014c2d2 AM |
2453 | if (s->flags.local_symbol) |
2454 | return (((struct local_symbol *) s)->frag | |
6885131b AM |
2455 | == &predefined_address_frag); |
2456 | /* Permit register names to be redefined. */ | |
2457 | return s->bsym->section == reg_section; | |
2458 | } | |
2459 | ||
9497f5ac NC |
2460 | int |
2461 | S_IS_VOLATILE (const symbolS *s) | |
2462 | { | |
5014c2d2 | 2463 | if (s->flags.local_symbol) |
9497f5ac | 2464 | return 0; |
3c0d9d71 | 2465 | return s->flags.volatil; |
9497f5ac NC |
2466 | } |
2467 | ||
2468 | int | |
2469 | S_IS_FORWARD_REF (const symbolS *s) | |
2470 | { | |
5014c2d2 | 2471 | if (s->flags.local_symbol) |
9497f5ac | 2472 | return 0; |
3c0d9d71 | 2473 | return s->flags.forward_ref; |
9497f5ac NC |
2474 | } |
2475 | ||
9758f3fc | 2476 | const char * |
74937d39 | 2477 | S_GET_NAME (symbolS *s) |
252b5132 | 2478 | { |
5014c2d2 | 2479 | return s->name; |
252b5132 RH |
2480 | } |
2481 | ||
2482 | segT | |
74937d39 | 2483 | S_GET_SEGMENT (symbolS *s) |
252b5132 | 2484 | { |
5014c2d2 | 2485 | if (s->flags.local_symbol) |
3c0d9d71 | 2486 | return ((struct local_symbol *) s)->section; |
252b5132 RH |
2487 | return s->bsym->section; |
2488 | } | |
2489 | ||
2490 | void | |
74937d39 | 2491 | S_SET_SEGMENT (symbolS *s, segT seg) |
252b5132 | 2492 | { |
5014c2d2 | 2493 | if (s->flags.local_symbol) |
49309057 | 2494 | { |
5014c2d2 AM |
2495 | ((struct local_symbol *) s)->section = seg; |
2496 | return; | |
49309057 ILT |
2497 | } |
2498 | ||
5014c2d2 AM |
2499 | /* Don't reassign section symbols. The direct reason is to prevent seg |
2500 | faults assigning back to const global symbols such as *ABS*, but it | |
2501 | shouldn't happen anyway. */ | |
252b5132 RH |
2502 | if (s->bsym->flags & BSF_SECTION_SYM) |
2503 | { | |
2504 | if (s->bsym->section != seg) | |
7c743825 | 2505 | abort (); |
252b5132 RH |
2506 | } |
2507 | else | |
578c64a4 NC |
2508 | { |
2509 | if (multibyte_handling == multibyte_warn_syms | |
2510 | && ! s->flags.local_symbol | |
2511 | && seg != undefined_section | |
2512 | && ! s->flags.multibyte_warned | |
2513 | && scan_for_multibyte_characters ((const unsigned char *) s->name, | |
2514 | (const unsigned char *) s->name + strlen (s->name), | |
2515 | false)) | |
2516 | { | |
2517 | as_warn (_("symbol '%s' contains multibyte characters"), s->name); | |
2518 | s->flags.multibyte_warned = 1; | |
2519 | } | |
2520 | ||
2521 | s->bsym->section = seg; | |
2522 | } | |
252b5132 RH |
2523 | } |
2524 | ||
2525 | void | |
74937d39 | 2526 | S_SET_EXTERNAL (symbolS *s) |
252b5132 | 2527 | { |
5014c2d2 AM |
2528 | if (s->flags.local_symbol) |
2529 | s = local_symbol_convert (s); | |
252b5132 RH |
2530 | if ((s->bsym->flags & BSF_WEAK) != 0) |
2531 | { | |
2532 | /* Let .weak override .global. */ | |
2533 | return; | |
2534 | } | |
4d7c34bf NC |
2535 | if (s->bsym->flags & BSF_SECTION_SYM) |
2536 | { | |
4d7c34bf | 2537 | /* Do not reassign section symbols. */ |
dd933805 | 2538 | as_warn (_("can't make section symbol global")); |
4d7c34bf NC |
2539 | return; |
2540 | } | |
97c4f2d9 | 2541 | #ifndef TC_GLOBAL_REGISTER_SYMBOL_OK |
d0548f34 L |
2542 | if (S_GET_SEGMENT (s) == reg_section) |
2543 | { | |
dd933805 | 2544 | as_bad (_("can't make register symbol global")); |
d0548f34 L |
2545 | return; |
2546 | } | |
97c4f2d9 | 2547 | #endif |
252b5132 | 2548 | s->bsym->flags |= BSF_GLOBAL; |
7c743825 | 2549 | s->bsym->flags &= ~(BSF_LOCAL | BSF_WEAK); |
977cdf5a | 2550 | |
22ba0981 | 2551 | #ifdef TE_PE |
977cdf5a NC |
2552 | if (! an_external_name && S_GET_NAME(s)[0] != '.') |
2553 | an_external_name = S_GET_NAME (s); | |
2554 | #endif | |
252b5132 RH |
2555 | } |
2556 | ||
2557 | void | |
74937d39 | 2558 | S_CLEAR_EXTERNAL (symbolS *s) |
252b5132 | 2559 | { |
5014c2d2 | 2560 | if (s->flags.local_symbol) |
49309057 | 2561 | return; |
252b5132 RH |
2562 | if ((s->bsym->flags & BSF_WEAK) != 0) |
2563 | { | |
2564 | /* Let .weak override. */ | |
2565 | return; | |
2566 | } | |
2567 | s->bsym->flags |= BSF_LOCAL; | |
7c743825 | 2568 | s->bsym->flags &= ~(BSF_GLOBAL | BSF_WEAK); |
252b5132 RH |
2569 | } |
2570 | ||
2571 | void | |
74937d39 | 2572 | S_SET_WEAK (symbolS *s) |
252b5132 | 2573 | { |
5014c2d2 AM |
2574 | if (s->flags.local_symbol) |
2575 | s = local_symbol_convert (s); | |
06e77878 AO |
2576 | #ifdef obj_set_weak_hook |
2577 | obj_set_weak_hook (s); | |
2578 | #endif | |
252b5132 | 2579 | s->bsym->flags |= BSF_WEAK; |
7c743825 | 2580 | s->bsym->flags &= ~(BSF_GLOBAL | BSF_LOCAL); |
252b5132 RH |
2581 | } |
2582 | ||
06e77878 AO |
2583 | void |
2584 | S_SET_WEAKREFR (symbolS *s) | |
2585 | { | |
5014c2d2 AM |
2586 | if (s->flags.local_symbol) |
2587 | s = local_symbol_convert (s); | |
3c0d9d71 | 2588 | s->flags.weakrefr = 1; |
06e77878 AO |
2589 | /* If the alias was already used, make sure we mark the target as |
2590 | used as well, otherwise it might be dropped from the symbol | |
2591 | table. This may have unintended side effects if the alias is | |
2592 | later redirected to another symbol, such as keeping the unused | |
2593 | previous target in the symbol table. Since it will be weak, it's | |
2594 | not a big deal. */ | |
3c0d9d71 | 2595 | if (s->flags.used) |
5014c2d2 | 2596 | symbol_mark_used (s->x->value.X_add_symbol); |
06e77878 AO |
2597 | } |
2598 | ||
2599 | void | |
2600 | S_CLEAR_WEAKREFR (symbolS *s) | |
2601 | { | |
5014c2d2 | 2602 | if (s->flags.local_symbol) |
06e77878 | 2603 | return; |
3c0d9d71 | 2604 | s->flags.weakrefr = 0; |
06e77878 AO |
2605 | } |
2606 | ||
2607 | void | |
2608 | S_SET_WEAKREFD (symbolS *s) | |
2609 | { | |
5014c2d2 AM |
2610 | if (s->flags.local_symbol) |
2611 | s = local_symbol_convert (s); | |
3c0d9d71 | 2612 | s->flags.weakrefd = 1; |
06e77878 AO |
2613 | S_SET_WEAK (s); |
2614 | } | |
2615 | ||
2616 | void | |
2617 | S_CLEAR_WEAKREFD (symbolS *s) | |
2618 | { | |
5014c2d2 | 2619 | if (s->flags.local_symbol) |
06e77878 | 2620 | return; |
3c0d9d71 | 2621 | if (s->flags.weakrefd) |
06e77878 | 2622 | { |
3c0d9d71 | 2623 | s->flags.weakrefd = 0; |
06e77878 AO |
2624 | /* If a weakref target symbol is weak, then it was never |
2625 | referenced directly before, not even in a .global directive, | |
2626 | so decay it to local. If it remains undefined, it will be | |
2627 | later turned into a global, like any other undefined | |
2628 | symbol. */ | |
2629 | if (s->bsym->flags & BSF_WEAK) | |
2630 | { | |
2631 | #ifdef obj_clear_weak_hook | |
2632 | obj_clear_weak_hook (s); | |
2633 | #endif | |
2634 | s->bsym->flags &= ~BSF_WEAK; | |
2635 | s->bsym->flags |= BSF_LOCAL; | |
2636 | } | |
2637 | } | |
2638 | } | |
2639 | ||
00f7efb6 | 2640 | void |
74937d39 | 2641 | S_SET_THREAD_LOCAL (symbolS *s) |
00f7efb6 | 2642 | { |
5014c2d2 AM |
2643 | if (s->flags.local_symbol) |
2644 | s = local_symbol_convert (s); | |
00f7efb6 JJ |
2645 | if (bfd_is_com_section (s->bsym->section) |
2646 | && (s->bsym->flags & BSF_THREAD_LOCAL) != 0) | |
2647 | return; | |
2648 | s->bsym->flags |= BSF_THREAD_LOCAL; | |
2649 | if ((s->bsym->flags & BSF_FUNCTION) != 0) | |
2650 | as_bad (_("Accessing function `%s' as thread-local object"), | |
2651 | S_GET_NAME (s)); | |
2652 | else if (! bfd_is_und_section (s->bsym->section) | |
2653 | && (s->bsym->section->flags & SEC_THREAD_LOCAL) == 0) | |
2654 | as_bad (_("Accessing `%s' as thread-local object"), | |
2655 | S_GET_NAME (s)); | |
2656 | } | |
2657 | ||
252b5132 | 2658 | void |
977cdf5a | 2659 | S_SET_NAME (symbolS *s, const char *name) |
252b5132 | 2660 | { |
5014c2d2 AM |
2661 | s->name = name; |
2662 | if (s->flags.local_symbol) | |
2663 | return; | |
252b5132 RH |
2664 | s->bsym->name = name; |
2665 | } | |
49309057 | 2666 | |
9497f5ac NC |
2667 | void |
2668 | S_SET_VOLATILE (symbolS *s) | |
2669 | { | |
5014c2d2 AM |
2670 | if (s->flags.local_symbol) |
2671 | s = local_symbol_convert (s); | |
3c0d9d71 | 2672 | s->flags.volatil = 1; |
9497f5ac NC |
2673 | } |
2674 | ||
92757bc9 JB |
2675 | void |
2676 | S_CLEAR_VOLATILE (symbolS *s) | |
2677 | { | |
5014c2d2 | 2678 | if (!s->flags.local_symbol) |
3c0d9d71 | 2679 | s->flags.volatil = 0; |
92757bc9 JB |
2680 | } |
2681 | ||
9497f5ac NC |
2682 | void |
2683 | S_SET_FORWARD_REF (symbolS *s) | |
2684 | { | |
5014c2d2 AM |
2685 | if (s->flags.local_symbol) |
2686 | s = local_symbol_convert (s); | |
3c0d9d71 | 2687 | s->flags.forward_ref = 1; |
9497f5ac NC |
2688 | } |
2689 | ||
49309057 ILT |
2690 | /* Return the previous symbol in a chain. */ |
2691 | ||
2692 | symbolS * | |
74937d39 | 2693 | symbol_previous (symbolS *s) |
49309057 | 2694 | { |
5014c2d2 | 2695 | if (s->flags.local_symbol) |
49309057 | 2696 | abort (); |
5014c2d2 | 2697 | return s->x->previous; |
49309057 ILT |
2698 | } |
2699 | ||
49309057 ILT |
2700 | /* Return the next symbol in a chain. */ |
2701 | ||
2702 | symbolS * | |
74937d39 | 2703 | symbol_next (symbolS *s) |
49309057 | 2704 | { |
5014c2d2 | 2705 | if (s->flags.local_symbol) |
49309057 | 2706 | abort (); |
5014c2d2 | 2707 | return s->x->next; |
49309057 ILT |
2708 | } |
2709 | ||
2710 | /* Return a pointer to the value of a symbol as an expression. */ | |
2711 | ||
2712 | expressionS * | |
74937d39 | 2713 | symbol_get_value_expression (symbolS *s) |
49309057 | 2714 | { |
5014c2d2 AM |
2715 | if (s->flags.local_symbol) |
2716 | s = local_symbol_convert (s); | |
2717 | return &s->x->value; | |
49309057 ILT |
2718 | } |
2719 | ||
2720 | /* Set the value of a symbol to an expression. */ | |
2721 | ||
2722 | void | |
74937d39 | 2723 | symbol_set_value_expression (symbolS *s, const expressionS *exp) |
49309057 | 2724 | { |
5014c2d2 AM |
2725 | if (s->flags.local_symbol) |
2726 | s = local_symbol_convert (s); | |
2727 | s->x->value = *exp; | |
06e77878 | 2728 | S_CLEAR_WEAKREFR (s); |
49309057 ILT |
2729 | } |
2730 | ||
087d837e L |
2731 | /* Return whether 2 symbols are the same. */ |
2732 | ||
2733 | int | |
2734 | symbol_same_p (symbolS *s1, symbolS *s2) | |
2735 | { | |
087d837e L |
2736 | return s1 == s2; |
2737 | } | |
2738 | ||
be95a9c1 AM |
2739 | /* Return a pointer to the X_add_number component of a symbol. */ |
2740 | ||
514d955d | 2741 | offsetT * |
be95a9c1 AM |
2742 | symbol_X_add_number (symbolS *s) |
2743 | { | |
5014c2d2 | 2744 | if (s->flags.local_symbol) |
3c0d9d71 | 2745 | return (offsetT *) &((struct local_symbol *) s)->value; |
be95a9c1 | 2746 | |
5014c2d2 | 2747 | return &s->x->value.X_add_number; |
be95a9c1 AM |
2748 | } |
2749 | ||
b7d6ed97 RH |
2750 | /* Set the value of SYM to the current position in the current segment. */ |
2751 | ||
2752 | void | |
74937d39 | 2753 | symbol_set_value_now (symbolS *sym) |
b7d6ed97 RH |
2754 | { |
2755 | S_SET_SEGMENT (sym, now_seg); | |
2756 | S_SET_VALUE (sym, frag_now_fix ()); | |
2757 | symbol_set_frag (sym, frag_now); | |
2758 | } | |
2759 | ||
49309057 ILT |
2760 | /* Set the frag of a symbol. */ |
2761 | ||
2762 | void | |
74937d39 | 2763 | symbol_set_frag (symbolS *s, fragS *f) |
49309057 | 2764 | { |
5014c2d2 | 2765 | if (s->flags.local_symbol) |
49309057 | 2766 | { |
5014c2d2 | 2767 | ((struct local_symbol *) s)->frag = f; |
49309057 ILT |
2768 | return; |
2769 | } | |
3c0d9d71 | 2770 | s->frag = f; |
06e77878 | 2771 | S_CLEAR_WEAKREFR (s); |
49309057 ILT |
2772 | } |
2773 | ||
2774 | /* Return the frag of a symbol. */ | |
2775 | ||
2776 | fragS * | |
74937d39 | 2777 | symbol_get_frag (symbolS *s) |
49309057 | 2778 | { |
5014c2d2 AM |
2779 | if (s->flags.local_symbol) |
2780 | return ((struct local_symbol *) s)->frag; | |
3c0d9d71 | 2781 | return s->frag; |
49309057 ILT |
2782 | } |
2783 | ||
2784 | /* Mark a symbol as having been used. */ | |
2785 | ||
2786 | void | |
74937d39 | 2787 | symbol_mark_used (symbolS *s) |
49309057 | 2788 | { |
5014c2d2 | 2789 | if (s->flags.local_symbol) |
49309057 | 2790 | return; |
3c0d9d71 | 2791 | s->flags.used = 1; |
06e77878 | 2792 | if (S_IS_WEAKREFR (s)) |
5014c2d2 | 2793 | symbol_mark_used (s->x->value.X_add_symbol); |
49309057 ILT |
2794 | } |
2795 | ||
2796 | /* Clear the mark of whether a symbol has been used. */ | |
2797 | ||
2798 | void | |
74937d39 | 2799 | symbol_clear_used (symbolS *s) |
49309057 | 2800 | { |
5014c2d2 AM |
2801 | if (s->flags.local_symbol) |
2802 | s = local_symbol_convert (s); | |
3c0d9d71 | 2803 | s->flags.used = 0; |
49309057 ILT |
2804 | } |
2805 | ||
2806 | /* Return whether a symbol has been used. */ | |
2807 | ||
2808 | int | |
74937d39 | 2809 | symbol_used_p (symbolS *s) |
49309057 | 2810 | { |
5014c2d2 | 2811 | if (s->flags.local_symbol) |
49309057 | 2812 | return 1; |
3c0d9d71 | 2813 | return s->flags.used; |
49309057 ILT |
2814 | } |
2815 | ||
2816 | /* Mark a symbol as having been used in a reloc. */ | |
2817 | ||
2818 | void | |
74937d39 | 2819 | symbol_mark_used_in_reloc (symbolS *s) |
49309057 | 2820 | { |
5014c2d2 AM |
2821 | if (s->flags.local_symbol) |
2822 | s = local_symbol_convert (s); | |
3c0d9d71 | 2823 | s->flags.used_in_reloc = 1; |
49309057 ILT |
2824 | } |
2825 | ||
2826 | /* Clear the mark of whether a symbol has been used in a reloc. */ | |
2827 | ||
2828 | void | |
74937d39 | 2829 | symbol_clear_used_in_reloc (symbolS *s) |
49309057 | 2830 | { |
5014c2d2 | 2831 | if (s->flags.local_symbol) |
49309057 | 2832 | return; |
3c0d9d71 | 2833 | s->flags.used_in_reloc = 0; |
49309057 ILT |
2834 | } |
2835 | ||
2836 | /* Return whether a symbol has been used in a reloc. */ | |
2837 | ||
2838 | int | |
74937d39 | 2839 | symbol_used_in_reloc_p (symbolS *s) |
49309057 | 2840 | { |
5014c2d2 | 2841 | if (s->flags.local_symbol) |
49309057 | 2842 | return 0; |
3c0d9d71 | 2843 | return s->flags.used_in_reloc; |
49309057 ILT |
2844 | } |
2845 | ||
2846 | /* Mark a symbol as an MRI common symbol. */ | |
2847 | ||
2848 | void | |
74937d39 | 2849 | symbol_mark_mri_common (symbolS *s) |
49309057 | 2850 | { |
5014c2d2 AM |
2851 | if (s->flags.local_symbol) |
2852 | s = local_symbol_convert (s); | |
3c0d9d71 | 2853 | s->flags.mri_common = 1; |
49309057 ILT |
2854 | } |
2855 | ||
2856 | /* Clear the mark of whether a symbol is an MRI common symbol. */ | |
2857 | ||
2858 | void | |
74937d39 | 2859 | symbol_clear_mri_common (symbolS *s) |
49309057 | 2860 | { |
5014c2d2 | 2861 | if (s->flags.local_symbol) |
49309057 | 2862 | return; |
3c0d9d71 | 2863 | s->flags.mri_common = 0; |
49309057 ILT |
2864 | } |
2865 | ||
2866 | /* Return whether a symbol is an MRI common symbol. */ | |
2867 | ||
2868 | int | |
74937d39 | 2869 | symbol_mri_common_p (symbolS *s) |
49309057 | 2870 | { |
5014c2d2 | 2871 | if (s->flags.local_symbol) |
49309057 | 2872 | return 0; |
3c0d9d71 | 2873 | return s->flags.mri_common; |
49309057 ILT |
2874 | } |
2875 | ||
2876 | /* Mark a symbol as having been written. */ | |
2877 | ||
2878 | void | |
74937d39 | 2879 | symbol_mark_written (symbolS *s) |
49309057 | 2880 | { |
5014c2d2 | 2881 | if (s->flags.local_symbol) |
49309057 | 2882 | return; |
3c0d9d71 | 2883 | s->flags.written = 1; |
49309057 ILT |
2884 | } |
2885 | ||
2886 | /* Clear the mark of whether a symbol has been written. */ | |
2887 | ||
2888 | void | |
74937d39 | 2889 | symbol_clear_written (symbolS *s) |
49309057 | 2890 | { |
5014c2d2 | 2891 | if (s->flags.local_symbol) |
49309057 | 2892 | return; |
3c0d9d71 | 2893 | s->flags.written = 0; |
49309057 ILT |
2894 | } |
2895 | ||
2896 | /* Return whether a symbol has been written. */ | |
2897 | ||
2898 | int | |
74937d39 | 2899 | symbol_written_p (symbolS *s) |
49309057 | 2900 | { |
5014c2d2 | 2901 | if (s->flags.local_symbol) |
49309057 | 2902 | return 0; |
3c0d9d71 | 2903 | return s->flags.written; |
49309057 ILT |
2904 | } |
2905 | ||
eb09df16 L |
2906 | /* Mark a symbol as to be removed. */ |
2907 | ||
2908 | void | |
2909 | symbol_mark_removed (symbolS *s) | |
2910 | { | |
2911 | if (s->flags.local_symbol) | |
2912 | return; | |
2913 | s->flags.removed = 1; | |
2914 | } | |
2915 | ||
2916 | /* Return whether a symbol has been marked to be removed. */ | |
2917 | ||
2918 | int | |
2919 | symbol_removed_p (symbolS *s) | |
2920 | { | |
2921 | if (s->flags.local_symbol) | |
2922 | return 0; | |
2923 | return s->flags.removed; | |
2924 | } | |
2925 | ||
49309057 ILT |
2926 | /* Mark a symbol has having been resolved. */ |
2927 | ||
2928 | void | |
74937d39 | 2929 | symbol_mark_resolved (symbolS *s) |
49309057 | 2930 | { |
3c0d9d71 | 2931 | s->flags.resolved = 1; |
49309057 ILT |
2932 | } |
2933 | ||
2934 | /* Return whether a symbol has been resolved. */ | |
2935 | ||
2936 | int | |
74937d39 | 2937 | symbol_resolved_p (symbolS *s) |
49309057 | 2938 | { |
3c0d9d71 | 2939 | return s->flags.resolved; |
49309057 ILT |
2940 | } |
2941 | ||
2942 | /* Return whether a symbol is a section symbol. */ | |
2943 | ||
2944 | int | |
5014c2d2 | 2945 | symbol_section_p (symbolS *s) |
49309057 | 2946 | { |
5014c2d2 | 2947 | if (s->flags.local_symbol) |
49309057 | 2948 | return 0; |
49309057 | 2949 | return (s->bsym->flags & BSF_SECTION_SYM) != 0; |
49309057 ILT |
2950 | } |
2951 | ||
2952 | /* Return whether a symbol is equated to another symbol. */ | |
2953 | ||
2954 | int | |
74937d39 | 2955 | symbol_equated_p (symbolS *s) |
49309057 | 2956 | { |
5014c2d2 | 2957 | if (s->flags.local_symbol) |
49309057 | 2958 | return 0; |
5014c2d2 | 2959 | return s->x->value.X_op == O_symbol; |
49309057 ILT |
2960 | } |
2961 | ||
e0890092 AM |
2962 | /* Return whether a symbol is equated to another symbol, and should be |
2963 | treated specially when writing out relocs. */ | |
2964 | ||
2965 | int | |
74937d39 | 2966 | symbol_equated_reloc_p (symbolS *s) |
e0890092 | 2967 | { |
5014c2d2 | 2968 | if (s->flags.local_symbol) |
e0890092 AM |
2969 | return 0; |
2970 | /* X_op_symbol, normally not used for O_symbol, is set by | |
2971 | resolve_symbol_value to flag expression syms that have been | |
2972 | equated. */ | |
5014c2d2 | 2973 | return (s->x->value.X_op == O_symbol |
7be1c489 | 2974 | #if defined (OBJ_COFF) && defined (TE_PE) |
977cdf5a NC |
2975 | && ! S_IS_WEAK (s) |
2976 | #endif | |
5014c2d2 | 2977 | && ((s->flags.resolved && s->x->value.X_op_symbol != NULL) |
e0890092 AM |
2978 | || ! S_IS_DEFINED (s) |
2979 | || S_IS_COMMON (s))); | |
2980 | } | |
2981 | ||
49309057 ILT |
2982 | /* Return whether a symbol has a constant value. */ |
2983 | ||
2984 | int | |
74937d39 | 2985 | symbol_constant_p (symbolS *s) |
49309057 | 2986 | { |
5014c2d2 | 2987 | if (s->flags.local_symbol) |
49309057 | 2988 | return 1; |
5014c2d2 | 2989 | return s->x->value.X_op == O_constant; |
49309057 ILT |
2990 | } |
2991 | ||
bdf128d6 JB |
2992 | /* Return whether a symbol was cloned and thus removed from the global |
2993 | symbol list. */ | |
2994 | ||
2995 | int | |
2996 | symbol_shadow_p (symbolS *s) | |
2997 | { | |
5014c2d2 | 2998 | if (s->flags.local_symbol) |
bdf128d6 | 2999 | return 0; |
5014c2d2 | 3000 | return s->x->next == s; |
bdf128d6 JB |
3001 | } |
3002 | ||
5014c2d2 | 3003 | /* If S is a struct symbol return S, otherwise return NULL. */ |
8d1015a8 AM |
3004 | |
3005 | symbolS * | |
3006 | symbol_symbolS (symbolS *s) | |
3007 | { | |
5014c2d2 | 3008 | if (s->flags.local_symbol) |
8d1015a8 AM |
3009 | return NULL; |
3010 | return s; | |
3011 | } | |
3012 | ||
49309057 ILT |
3013 | /* Return the BFD symbol for a symbol. */ |
3014 | ||
3015 | asymbol * | |
74937d39 | 3016 | symbol_get_bfdsym (symbolS *s) |
49309057 | 3017 | { |
5014c2d2 AM |
3018 | if (s->flags.local_symbol) |
3019 | s = local_symbol_convert (s); | |
49309057 ILT |
3020 | return s->bsym; |
3021 | } | |
3022 | ||
3023 | /* Set the BFD symbol for a symbol. */ | |
3024 | ||
3025 | void | |
74937d39 | 3026 | symbol_set_bfdsym (symbolS *s, asymbol *bsym) |
49309057 | 3027 | { |
5014c2d2 AM |
3028 | if (s->flags.local_symbol) |
3029 | s = local_symbol_convert (s); | |
22fe14ad NC |
3030 | /* Usually, it is harmless to reset a symbol to a BFD section |
3031 | symbol. For example, obj_elf_change_section sets the BFD symbol | |
3032 | of an old symbol with the newly created section symbol. But when | |
3033 | we have multiple sections with the same name, the newly created | |
3034 | section may have the same name as an old section. We check if the | |
3035 | old symbol has been already marked as a section symbol before | |
3036 | resetting it. */ | |
3037 | if ((s->bsym->flags & BSF_SECTION_SYM) == 0) | |
3038 | s->bsym = bsym; | |
3039 | /* else XXX - What do we do now ? */ | |
49309057 ILT |
3040 | } |
3041 | ||
49309057 ILT |
3042 | #ifdef OBJ_SYMFIELD_TYPE |
3043 | ||
3044 | /* Get a pointer to the object format information for a symbol. */ | |
3045 | ||
3046 | OBJ_SYMFIELD_TYPE * | |
74937d39 | 3047 | symbol_get_obj (symbolS *s) |
49309057 | 3048 | { |
5014c2d2 AM |
3049 | if (s->flags.local_symbol) |
3050 | s = local_symbol_convert (s); | |
3051 | return &s->x->obj; | |
49309057 ILT |
3052 | } |
3053 | ||
3054 | /* Set the object format information for a symbol. */ | |
3055 | ||
3056 | void | |
74937d39 | 3057 | symbol_set_obj (symbolS *s, OBJ_SYMFIELD_TYPE *o) |
49309057 | 3058 | { |
5014c2d2 AM |
3059 | if (s->flags.local_symbol) |
3060 | s = local_symbol_convert (s); | |
3061 | s->x->obj = *o; | |
49309057 ILT |
3062 | } |
3063 | ||
3064 | #endif /* OBJ_SYMFIELD_TYPE */ | |
3065 | ||
3066 | #ifdef TC_SYMFIELD_TYPE | |
3067 | ||
3068 | /* Get a pointer to the processor information for a symbol. */ | |
3069 | ||
3070 | TC_SYMFIELD_TYPE * | |
74937d39 | 3071 | symbol_get_tc (symbolS *s) |
49309057 | 3072 | { |
5014c2d2 AM |
3073 | if (s->flags.local_symbol) |
3074 | s = local_symbol_convert (s); | |
3075 | return &s->x->tc; | |
49309057 ILT |
3076 | } |
3077 | ||
3078 | /* Set the processor information for a symbol. */ | |
3079 | ||
3080 | void | |
74937d39 | 3081 | symbol_set_tc (symbolS *s, TC_SYMFIELD_TYPE *o) |
49309057 | 3082 | { |
5014c2d2 AM |
3083 | if (s->flags.local_symbol) |
3084 | s = local_symbol_convert (s); | |
3085 | s->x->tc = *o; | |
49309057 ILT |
3086 | } |
3087 | ||
3088 | #endif /* TC_SYMFIELD_TYPE */ | |
3089 | ||
252b5132 | 3090 | void |
74937d39 | 3091 | symbol_begin (void) |
252b5132 RH |
3092 | { |
3093 | symbol_lastP = NULL; | |
7c743825 | 3094 | symbol_rootP = NULL; /* In case we have 0 symbols (!!) */ |
d3b740ca ML |
3095 | sy_hash = htab_create_alloc (16, hash_symbol_entry, eq_symbol_entry, |
3096 | NULL, xcalloc, free); | |
252b5132 | 3097 | |
252b5132 | 3098 | #if defined (EMIT_SECTION_SYMBOLS) || !defined (RELOC_REQUIRES_SYMBOL) |
45dfa85a | 3099 | abs_symbol.bsym = bfd_abs_section_ptr->symbol; |
252b5132 | 3100 | #endif |
5014c2d2 AM |
3101 | abs_symbol.x = &abs_symbol_x; |
3102 | abs_symbol.x->value.X_op = O_constant; | |
3c0d9d71 | 3103 | abs_symbol.frag = &zero_address_frag; |
252b5132 RH |
3104 | |
3105 | if (LOCAL_LABELS_FB) | |
3106 | fb_label_init (); | |
3107 | } | |
4a826962 | 3108 | |
b1822093 AM |
3109 | void |
3110 | symbol_end (void) | |
3111 | { | |
3112 | htab_delete (sy_hash); | |
3113 | } | |
3114 | ||
4a826962 MR |
3115 | void |
3116 | dot_symbol_init (void) | |
3117 | { | |
5014c2d2 AM |
3118 | dot_symbol.name = "."; |
3119 | dot_symbol.flags.forward_ref = 1; | |
4a826962 MR |
3120 | dot_symbol.bsym = bfd_make_empty_symbol (stdoutput); |
3121 | if (dot_symbol.bsym == NULL) | |
3122 | as_fatal ("bfd_make_empty_symbol: %s", bfd_errmsg (bfd_get_error ())); | |
3123 | dot_symbol.bsym->name = "."; | |
5014c2d2 AM |
3124 | dot_symbol.x = &dot_symbol_x; |
3125 | dot_symbol.x->value.X_op = O_constant; | |
4a826962 | 3126 | } |
252b5132 RH |
3127 | \f |
3128 | int indent_level; | |
3129 | ||
3130 | /* Maximum indent level. | |
3131 | Available for modification inside a gdb session. */ | |
87c245cc | 3132 | static int max_indent_level = 8; |
252b5132 | 3133 | |
252b5132 | 3134 | void |
74937d39 | 3135 | print_symbol_value_1 (FILE *file, symbolS *sym) |
252b5132 RH |
3136 | { |
3137 | const char *name = S_GET_NAME (sym); | |
3138 | if (!name || !name[0]) | |
3139 | name = "(unnamed)"; | |
f493c217 | 3140 | fprintf (file, "sym %p %s", sym, name); |
49309057 | 3141 | |
5014c2d2 | 3142 | if (sym->flags.local_symbol) |
49309057 ILT |
3143 | { |
3144 | struct local_symbol *locsym = (struct local_symbol *) sym; | |
d2df793a | 3145 | |
5014c2d2 AM |
3146 | if (locsym->frag != &zero_address_frag |
3147 | && locsym->frag != NULL) | |
f493c217 | 3148 | fprintf (file, " frag %p", locsym->frag); |
3c0d9d71 | 3149 | if (locsym->flags.resolved) |
49309057 ILT |
3150 | fprintf (file, " resolved"); |
3151 | fprintf (file, " local"); | |
3152 | } | |
3153 | else | |
3154 | { | |
3c0d9d71 | 3155 | if (sym->frag != &zero_address_frag) |
f493c217 | 3156 | fprintf (file, " frag %p", sym->frag); |
3c0d9d71 | 3157 | if (sym->flags.written) |
49309057 | 3158 | fprintf (file, " written"); |
3c0d9d71 | 3159 | if (sym->flags.resolved) |
49309057 | 3160 | fprintf (file, " resolved"); |
3c0d9d71 | 3161 | else if (sym->flags.resolving) |
49309057 | 3162 | fprintf (file, " resolving"); |
3c0d9d71 | 3163 | if (sym->flags.used_in_reloc) |
49309057 | 3164 | fprintf (file, " used-in-reloc"); |
3c0d9d71 | 3165 | if (sym->flags.used) |
49309057 ILT |
3166 | fprintf (file, " used"); |
3167 | if (S_IS_LOCAL (sym)) | |
3168 | fprintf (file, " local"); | |
e97b3f28 | 3169 | if (S_IS_EXTERNAL (sym)) |
49309057 | 3170 | fprintf (file, " extern"); |
06e77878 AO |
3171 | if (S_IS_WEAK (sym)) |
3172 | fprintf (file, " weak"); | |
49309057 ILT |
3173 | if (S_IS_DEBUG (sym)) |
3174 | fprintf (file, " debug"); | |
3175 | if (S_IS_DEFINED (sym)) | |
3176 | fprintf (file, " defined"); | |
3177 | } | |
06e77878 AO |
3178 | if (S_IS_WEAKREFR (sym)) |
3179 | fprintf (file, " weakrefr"); | |
3180 | if (S_IS_WEAKREFD (sym)) | |
3181 | fprintf (file, " weakrefd"); | |
252b5132 | 3182 | fprintf (file, " %s", segment_name (S_GET_SEGMENT (sym))); |
49309057 | 3183 | if (symbol_resolved_p (sym)) |
252b5132 RH |
3184 | { |
3185 | segT s = S_GET_SEGMENT (sym); | |
3186 | ||
3187 | if (s != undefined_section | |
411863a4 | 3188 | && s != expr_section) |
0af1713e | 3189 | fprintf (file, " %lx", (unsigned long) S_GET_VALUE (sym)); |
252b5132 RH |
3190 | } |
3191 | else if (indent_level < max_indent_level | |
3192 | && S_GET_SEGMENT (sym) != undefined_section) | |
3193 | { | |
3194 | indent_level++; | |
3195 | fprintf (file, "\n%*s<", indent_level * 4, ""); | |
5014c2d2 | 3196 | if (sym->flags.local_symbol) |
49309057 | 3197 | fprintf (file, "constant %lx", |
3c0d9d71 | 3198 | (unsigned long) ((struct local_symbol *) sym)->value); |
49309057 | 3199 | else |
5014c2d2 | 3200 | print_expr_1 (file, &sym->x->value); |
252b5132 RH |
3201 | fprintf (file, ">"); |
3202 | indent_level--; | |
3203 | } | |
3204 | fflush (file); | |
3205 | } | |
3206 | ||
3207 | void | |
74937d39 | 3208 | print_symbol_value (symbolS *sym) |
252b5132 RH |
3209 | { |
3210 | indent_level = 0; | |
3211 | print_symbol_value_1 (stderr, sym); | |
3212 | fprintf (stderr, "\n"); | |
3213 | } | |
3214 | ||
3215 | static void | |
74937d39 | 3216 | print_binary (FILE *file, const char *name, expressionS *exp) |
252b5132 RH |
3217 | { |
3218 | indent_level++; | |
3219 | fprintf (file, "%s\n%*s<", name, indent_level * 4, ""); | |
3220 | print_symbol_value_1 (file, exp->X_add_symbol); | |
3221 | fprintf (file, ">\n%*s<", indent_level * 4, ""); | |
3222 | print_symbol_value_1 (file, exp->X_op_symbol); | |
3223 | fprintf (file, ">"); | |
3224 | indent_level--; | |
3225 | } | |
3226 | ||
3227 | void | |
74937d39 | 3228 | print_expr_1 (FILE *file, expressionS *exp) |
252b5132 | 3229 | { |
f493c217 | 3230 | fprintf (file, "expr %p ", exp); |
252b5132 RH |
3231 | switch (exp->X_op) |
3232 | { | |
3233 | case O_illegal: | |
3234 | fprintf (file, "illegal"); | |
3235 | break; | |
3236 | case O_absent: | |
3237 | fprintf (file, "absent"); | |
3238 | break; | |
3239 | case O_constant: | |
f493c217 | 3240 | fprintf (file, "constant %" PRIx64, (uint64_t) exp->X_add_number); |
252b5132 RH |
3241 | break; |
3242 | case O_symbol: | |
3243 | indent_level++; | |
3244 | fprintf (file, "symbol\n%*s<", indent_level * 4, ""); | |
3245 | print_symbol_value_1 (file, exp->X_add_symbol); | |
3246 | fprintf (file, ">"); | |
3247 | maybe_print_addnum: | |
3248 | if (exp->X_add_number) | |
f493c217 AM |
3249 | fprintf (file, "\n%*s%" PRIx64, indent_level * 4, "", |
3250 | (uint64_t) exp->X_add_number); | |
252b5132 RH |
3251 | indent_level--; |
3252 | break; | |
3253 | case O_register: | |
3254 | fprintf (file, "register #%d", (int) exp->X_add_number); | |
3255 | break; | |
3256 | case O_big: | |
3257 | fprintf (file, "big"); | |
3258 | break; | |
3259 | case O_uminus: | |
3260 | fprintf (file, "uminus -<"); | |
3261 | indent_level++; | |
3262 | print_symbol_value_1 (file, exp->X_add_symbol); | |
3263 | fprintf (file, ">"); | |
3264 | goto maybe_print_addnum; | |
3265 | case O_bit_not: | |
3266 | fprintf (file, "bit_not"); | |
3267 | break; | |
3268 | case O_multiply: | |
3269 | print_binary (file, "multiply", exp); | |
3270 | break; | |
3271 | case O_divide: | |
3272 | print_binary (file, "divide", exp); | |
3273 | break; | |
3274 | case O_modulus: | |
3275 | print_binary (file, "modulus", exp); | |
3276 | break; | |
3277 | case O_left_shift: | |
3278 | print_binary (file, "lshift", exp); | |
3279 | break; | |
3280 | case O_right_shift: | |
3281 | print_binary (file, "rshift", exp); | |
3282 | break; | |
3283 | case O_bit_inclusive_or: | |
3284 | print_binary (file, "bit_ior", exp); | |
3285 | break; | |
3286 | case O_bit_exclusive_or: | |
3287 | print_binary (file, "bit_xor", exp); | |
3288 | break; | |
3289 | case O_bit_and: | |
3290 | print_binary (file, "bit_and", exp); | |
3291 | break; | |
3292 | case O_eq: | |
3293 | print_binary (file, "eq", exp); | |
3294 | break; | |
3295 | case O_ne: | |
3296 | print_binary (file, "ne", exp); | |
3297 | break; | |
3298 | case O_lt: | |
3299 | print_binary (file, "lt", exp); | |
3300 | break; | |
3301 | case O_le: | |
3302 | print_binary (file, "le", exp); | |
3303 | break; | |
3304 | case O_ge: | |
3305 | print_binary (file, "ge", exp); | |
3306 | break; | |
3307 | case O_gt: | |
3308 | print_binary (file, "gt", exp); | |
3309 | break; | |
3310 | case O_logical_and: | |
3311 | print_binary (file, "logical_and", exp); | |
3312 | break; | |
3313 | case O_logical_or: | |
3314 | print_binary (file, "logical_or", exp); | |
3315 | break; | |
3316 | case O_add: | |
3317 | indent_level++; | |
3318 | fprintf (file, "add\n%*s<", indent_level * 4, ""); | |
3319 | print_symbol_value_1 (file, exp->X_add_symbol); | |
3320 | fprintf (file, ">\n%*s<", indent_level * 4, ""); | |
3321 | print_symbol_value_1 (file, exp->X_op_symbol); | |
3322 | fprintf (file, ">"); | |
3323 | goto maybe_print_addnum; | |
3324 | case O_subtract: | |
3325 | indent_level++; | |
3326 | fprintf (file, "subtract\n%*s<", indent_level * 4, ""); | |
3327 | print_symbol_value_1 (file, exp->X_add_symbol); | |
3328 | fprintf (file, ">\n%*s<", indent_level * 4, ""); | |
3329 | print_symbol_value_1 (file, exp->X_op_symbol); | |
3330 | fprintf (file, ">"); | |
3331 | goto maybe_print_addnum; | |
3332 | default: | |
3333 | fprintf (file, "{unknown opcode %d}", (int) exp->X_op); | |
3334 | break; | |
3335 | } | |
3336 | fflush (stdout); | |
3337 | } | |
3338 | ||
3339 | void | |
74937d39 | 3340 | print_expr (expressionS *exp) |
252b5132 RH |
3341 | { |
3342 | print_expr_1 (stderr, exp); | |
3343 | fprintf (stderr, "\n"); | |
3344 | } | |
3345 | ||
3346 | void | |
74937d39 | 3347 | symbol_print_statistics (FILE *file) |
252b5132 | 3348 | { |
d3b740ca | 3349 | htab_print_statistics (file, "symbol table", sy_hash); |
49309057 ILT |
3350 | fprintf (file, "%lu mini local symbols created, %lu converted\n", |
3351 | local_symbol_count, local_symbol_conversion_count); | |
252b5132 | 3352 | } |
280d71bf DB |
3353 | |
3354 | #ifdef OBJ_COMPLEX_RELC | |
3355 | ||
3356 | /* Convert given symbol to a new complex-relocation symbol name. This | |
6f12865c | 3357 | may be a recursive function, since it might be called for non-leaf |
280d71bf | 3358 | nodes (plain symbols) in the expression tree. The caller owns the |
6f12865c AM |
3359 | returning string, so should free it eventually. Errors are |
3360 | indicated via as_bad and a NULL return value. The given symbol | |
3c0d9d71 | 3361 | is marked with used_in_reloc. */ |
280d71bf DB |
3362 | |
3363 | char * | |
3364 | symbol_relc_make_sym (symbolS * sym) | |
3365 | { | |
3366 | char * terminal = NULL; | |
3367 | const char * sname; | |
3368 | char typetag; | |
3369 | int sname_len; | |
3370 | ||
9c2799c2 | 3371 | gas_assert (sym != NULL); |
280d71bf DB |
3372 | |
3373 | /* Recurse to symbol_relc_make_expr if this symbol | |
3374 | is defined as an expression or a plain value. */ | |
3375 | if ( S_GET_SEGMENT (sym) == expr_section | |
3376 | || S_GET_SEGMENT (sym) == absolute_section) | |
be0d3bbb | 3377 | return symbol_relc_make_expr (symbol_get_value_expression (sym)); |
280d71bf | 3378 | |
2469b3c5 | 3379 | /* This may be a "fake symbol", referring to ".". |
280d71bf DB |
3380 | Write out a special null symbol to refer to this position. */ |
3381 | if (! strcmp (S_GET_NAME (sym), FAKE_LABEL_NAME)) | |
3382 | return xstrdup ("."); | |
3383 | ||
3384 | /* We hope this is a plain leaf symbol. Construct the encoding | |
3385 | as {S,s}II...:CCCCCCC.... | |
3386 | where 'S'/'s' means section symbol / plain symbol | |
3387 | III is decimal for the symbol name length | |
3388 | CCC is the symbol name itself. */ | |
3389 | symbol_mark_used_in_reloc (sym); | |
3390 | ||
3391 | sname = S_GET_NAME (sym); | |
3392 | sname_len = strlen (sname); | |
3393 | typetag = symbol_section_p (sym) ? 'S' : 's'; | |
3394 | ||
add39d23 TS |
3395 | terminal = XNEWVEC (char, (1 /* S or s */ |
3396 | + 8 /* sname_len in decimal */ | |
3397 | + 1 /* _ spacer */ | |
3398 | + sname_len /* name itself */ | |
3399 | + 1 /* \0 */ )); | |
280d71bf DB |
3400 | |
3401 | sprintf (terminal, "%c%d:%s", typetag, sname_len, sname); | |
3402 | return terminal; | |
3403 | } | |
3404 | ||
3405 | /* Convert given value to a new complex-relocation symbol name. This | |
3406 | is a non-recursive function, since it is be called for leaf nodes | |
3407 | (plain values) in the expression tree. The caller owns the | |
3408 | returning string, so should free() it eventually. No errors. */ | |
3409 | ||
3410 | char * | |
3411 | symbol_relc_make_value (offsetT val) | |
3412 | { | |
325801bd | 3413 | char * terminal = XNEWVEC (char, 28); /* Enough for long long. */ |
280d71bf DB |
3414 | |
3415 | terminal[0] = '#'; | |
1a412f5f | 3416 | bfd_sprintf_vma (stdoutput, terminal + 1, val); |
280d71bf DB |
3417 | return terminal; |
3418 | } | |
3419 | ||
3420 | /* Convert given expression to a new complex-relocation symbol name. | |
3421 | This is a recursive function, since it traverses the entire given | |
3422 | expression tree. The caller owns the returning string, so should | |
3423 | free() it eventually. Errors are indicated via as_bad() and a NULL | |
3424 | return value. */ | |
3425 | ||
3426 | char * | |
3427 | symbol_relc_make_expr (expressionS * exp) | |
3428 | { | |
b9bb4a93 | 3429 | const char * opstr = NULL; /* Operator prefix string. */ |
280d71bf DB |
3430 | int arity = 0; /* Arity of this operator. */ |
3431 | char * operands[3]; /* Up to three operands. */ | |
3432 | char * concat_string = NULL; | |
3433 | ||
3434 | operands[0] = operands[1] = operands[2] = NULL; | |
3435 | ||
9c2799c2 | 3436 | gas_assert (exp != NULL); |
280d71bf DB |
3437 | |
3438 | /* Match known operators -> fill in opstr, arity, operands[] and fall | |
34bca508 | 3439 | through to construct subexpression fragments; may instead return |
280d71bf DB |
3440 | string directly for leaf nodes. */ |
3441 | ||
34bca508 | 3442 | /* See expr.h for the meaning of all these enums. Many operators |
280d71bf DB |
3443 | have an unnatural arity (X_add_number implicitly added). The |
3444 | conversion logic expands them to explicit "+" subexpressions. */ | |
3445 | ||
3446 | switch (exp->X_op) | |
3447 | { | |
3448 | default: | |
3449 | as_bad ("Unknown expression operator (enum %d)", exp->X_op); | |
3450 | break; | |
3451 | ||
3452 | /* Leaf nodes. */ | |
3453 | case O_constant: | |
3454 | return symbol_relc_make_value (exp->X_add_number); | |
3455 | ||
3456 | case O_symbol: | |
34bca508 L |
3457 | if (exp->X_add_number) |
3458 | { | |
3459 | arity = 2; | |
3460 | opstr = "+"; | |
280d71bf DB |
3461 | operands[0] = symbol_relc_make_sym (exp->X_add_symbol); |
3462 | operands[1] = symbol_relc_make_value (exp->X_add_number); | |
3463 | break; | |
3464 | } | |
3465 | else | |
3466 | return symbol_relc_make_sym (exp->X_add_symbol); | |
3467 | ||
3468 | /* Helper macros for nesting nodes. */ | |
3469 | ||
3c0d9d71 | 3470 | #define HANDLE_XADD_OPT1(str_) \ |
280d71bf | 3471 | if (exp->X_add_number) \ |
3c0d9d71 AM |
3472 | { \ |
3473 | arity = 2; \ | |
3474 | opstr = "+:" str_; \ | |
3475 | operands[0] = symbol_relc_make_sym (exp->X_add_symbol); \ | |
3476 | operands[1] = symbol_relc_make_value (exp->X_add_number); \ | |
3477 | break; \ | |
3478 | } \ | |
280d71bf | 3479 | else \ |
3c0d9d71 AM |
3480 | { \ |
3481 | arity = 1; \ | |
3482 | opstr = str_; \ | |
3483 | operands[0] = symbol_relc_make_sym (exp->X_add_symbol); \ | |
3484 | } \ | |
280d71bf | 3485 | break |
34bca508 | 3486 | |
3c0d9d71 | 3487 | #define HANDLE_XADD_OPT2(str_) \ |
280d71bf | 3488 | if (exp->X_add_number) \ |
3c0d9d71 AM |
3489 | { \ |
3490 | arity = 3; \ | |
3491 | opstr = "+:" str_; \ | |
3492 | operands[0] = symbol_relc_make_sym (exp->X_add_symbol); \ | |
3493 | operands[1] = symbol_relc_make_sym (exp->X_op_symbol); \ | |
3494 | operands[2] = symbol_relc_make_value (exp->X_add_number); \ | |
3495 | } \ | |
280d71bf | 3496 | else \ |
3c0d9d71 AM |
3497 | { \ |
3498 | arity = 2; \ | |
3499 | opstr = str_; \ | |
3500 | operands[0] = symbol_relc_make_sym (exp->X_add_symbol); \ | |
3501 | operands[1] = symbol_relc_make_sym (exp->X_op_symbol); \ | |
3502 | } \ | |
280d71bf DB |
3503 | break |
3504 | ||
3505 | /* Nesting nodes. */ | |
3506 | ||
3c0d9d71 AM |
3507 | case O_uminus: HANDLE_XADD_OPT1 ("0-"); |
3508 | case O_bit_not: HANDLE_XADD_OPT1 ("~"); | |
3509 | case O_logical_not: HANDLE_XADD_OPT1 ("!"); | |
3510 | case O_multiply: HANDLE_XADD_OPT2 ("*"); | |
3511 | case O_divide: HANDLE_XADD_OPT2 ("/"); | |
3512 | case O_modulus: HANDLE_XADD_OPT2 ("%"); | |
3513 | case O_left_shift: HANDLE_XADD_OPT2 ("<<"); | |
3514 | case O_right_shift: HANDLE_XADD_OPT2 (">>"); | |
280d71bf DB |
3515 | case O_bit_inclusive_or: HANDLE_XADD_OPT2 ("|"); |
3516 | case O_bit_exclusive_or: HANDLE_XADD_OPT2 ("^"); | |
3c0d9d71 AM |
3517 | case O_bit_and: HANDLE_XADD_OPT2 ("&"); |
3518 | case O_add: HANDLE_XADD_OPT2 ("+"); | |
3519 | case O_subtract: HANDLE_XADD_OPT2 ("-"); | |
3520 | case O_eq: HANDLE_XADD_OPT2 ("=="); | |
3521 | case O_ne: HANDLE_XADD_OPT2 ("!="); | |
3522 | case O_lt: HANDLE_XADD_OPT2 ("<"); | |
3523 | case O_le: HANDLE_XADD_OPT2 ("<="); | |
3524 | case O_ge: HANDLE_XADD_OPT2 (">="); | |
3525 | case O_gt: HANDLE_XADD_OPT2 (">"); | |
3526 | case O_logical_and: HANDLE_XADD_OPT2 ("&&"); | |
3527 | case O_logical_or: HANDLE_XADD_OPT2 ("||"); | |
280d71bf DB |
3528 | } |
3529 | ||
3530 | /* Validate & reject early. */ | |
3531 | if (arity >= 1 && ((operands[0] == NULL) || (strlen (operands[0]) == 0))) | |
3532 | opstr = NULL; | |
3533 | if (arity >= 2 && ((operands[1] == NULL) || (strlen (operands[1]) == 0))) | |
3534 | opstr = NULL; | |
3535 | if (arity >= 3 && ((operands[2] == NULL) || (strlen (operands[2]) == 0))) | |
3536 | opstr = NULL; | |
3537 | ||
3538 | if (opstr == NULL) | |
3539 | concat_string = NULL; | |
29a2809e TS |
3540 | else if (arity == 0) |
3541 | concat_string = xstrdup (opstr); | |
3542 | else if (arity == 1) | |
3543 | concat_string = concat (opstr, ":", operands[0], (char *) NULL); | |
3544 | else if (arity == 2) | |
3545 | concat_string = concat (opstr, ":", operands[0], ":", operands[1], | |
3546 | (char *) NULL); | |
280d71bf | 3547 | else |
29a2809e TS |
3548 | concat_string = concat (opstr, ":", operands[0], ":", operands[1], ":", |
3549 | operands[2], (char *) NULL); | |
280d71bf DB |
3550 | |
3551 | /* Free operand strings (not opstr). */ | |
3552 | if (arity >= 1) xfree (operands[0]); | |
3553 | if (arity >= 2) xfree (operands[1]); | |
3554 | if (arity >= 3) xfree (operands[2]); | |
3555 | ||
3556 | return concat_string; | |
3557 | } | |
3558 | ||
3559 | #endif |