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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 AM |
63 | |
64 | /* Whether the symbol is a forward reference. */ | |
3c0d9d71 | 65 | unsigned int forward_ref : 1; |
8d1015a8 AM |
66 | |
67 | /* This is set if the symbol is defined in an MRI common section. | |
68 | We handle such sections as single common symbols, so symbols | |
69 | defined within them must be treated specially by the relocation | |
70 | routines. */ | |
3c0d9d71 | 71 | unsigned int mri_common : 1; |
8d1015a8 AM |
72 | |
73 | /* This is set if the symbol is set with a .weakref directive. */ | |
3c0d9d71 | 74 | unsigned int weakrefr : 1; |
8d1015a8 AM |
75 | |
76 | /* This is set when the symbol is referenced as part of a .weakref | |
77 | directive, but only if the symbol was not in the symbol table | |
78 | before. It is cleared as soon as any direct reference to the | |
79 | symbol is present. */ | |
3c0d9d71 | 80 | unsigned int weakrefd : 1; |
eb09df16 L |
81 | |
82 | /* Whether the symbol has been marked to be removed by a .symver | |
83 | directive. */ | |
84 | unsigned int removed : 1; | |
578c64a4 NC |
85 | |
86 | /* Set when a warning about the symbol containing multibyte characters | |
87 | is generated. */ | |
88 | unsigned int multibyte_warned : 1; | |
8d1015a8 AM |
89 | }; |
90 | ||
91 | /* A pointer in the symbol may point to either a complete symbol | |
3c0d9d71 | 92 | (struct symbol below) or to a local symbol (struct local_symbol |
8d1015a8 | 93 | defined here). The symbol code can detect the case by examining |
2a50b401 | 94 | the first field which is present in both structs. |
8d1015a8 AM |
95 | |
96 | We do this because we ordinarily only need a small amount of | |
97 | information for a local symbol. The symbol table takes up a lot of | |
98 | space, and storing less information for a local symbol can make a | |
99 | big difference in assembler memory usage when assembling a large | |
100 | file. */ | |
101 | ||
102 | struct local_symbol | |
103 | { | |
3c0d9d71 AM |
104 | /* Symbol flags. Only local_symbol and resolved are relevant. */ |
105 | struct symbol_flags flags; | |
8d1015a8 | 106 | |
5014c2d2 AM |
107 | /* Hash value calculated from name. */ |
108 | hashval_t hash; | |
8d1015a8 AM |
109 | |
110 | /* The symbol name. */ | |
3c0d9d71 | 111 | const char *name; |
8d1015a8 | 112 | |
5014c2d2 AM |
113 | /* The symbol frag. */ |
114 | fragS *frag; | |
115 | ||
116 | /* The symbol section. */ | |
117 | asection *section; | |
8d1015a8 AM |
118 | |
119 | /* The value of the symbol. */ | |
3c0d9d71 AM |
120 | valueT value; |
121 | }; | |
8d1015a8 | 122 | |
5014c2d2 AM |
123 | /* The information we keep for a symbol. The symbol table holds |
124 | pointers both to this and to local_symbol structures. The first | |
125 | three fields must be identical to struct local_symbol, and the size | |
126 | should be the same as or smaller than struct local_symbol. | |
127 | Fields that don't fit go to an extension structure. */ | |
3c0d9d71 AM |
128 | |
129 | struct symbol | |
130 | { | |
131 | /* Symbol flags. */ | |
132 | struct symbol_flags flags; | |
133 | ||
5014c2d2 AM |
134 | /* Hash value calculated from name. */ |
135 | hashval_t hash; | |
136 | ||
137 | /* The symbol name. */ | |
138 | const char *name; | |
139 | ||
140 | /* Pointer to the frag this symbol is attached to, if any. | |
141 | Otherwise, NULL. */ | |
142 | fragS *frag; | |
143 | ||
3c0d9d71 AM |
144 | /* BFD symbol */ |
145 | asymbol *bsym; | |
146 | ||
5014c2d2 AM |
147 | /* Extra symbol fields that won't fit. */ |
148 | struct xsymbol *x; | |
149 | }; | |
150 | ||
151 | /* Extra fields to make up a full symbol. */ | |
152 | ||
153 | struct xsymbol | |
154 | { | |
3c0d9d71 AM |
155 | /* The value of the symbol. */ |
156 | expressionS value; | |
157 | ||
158 | /* Forwards and backwards chain pointers. */ | |
159 | struct symbol *next; | |
160 | struct symbol *previous; | |
161 | ||
3c0d9d71 AM |
162 | #ifdef OBJ_SYMFIELD_TYPE |
163 | OBJ_SYMFIELD_TYPE obj; | |
164 | #endif | |
165 | ||
166 | #ifdef TC_SYMFIELD_TYPE | |
167 | TC_SYMFIELD_TYPE tc; | |
8d1015a8 AM |
168 | #endif |
169 | }; | |
170 | ||
5014c2d2 | 171 | typedef union symbol_entry |
d3b740ca | 172 | { |
5014c2d2 AM |
173 | struct local_symbol lsy; |
174 | struct symbol sy; | |
175 | } symbol_entry_t; | |
d3b740ca ML |
176 | |
177 | /* Hash function for a symbol_entry. */ | |
178 | ||
179 | static hashval_t | |
180 | hash_symbol_entry (const void *e) | |
181 | { | |
182 | symbol_entry_t *entry = (symbol_entry_t *) e; | |
5014c2d2 AM |
183 | if (entry->sy.hash == 0) |
184 | entry->sy.hash = htab_hash_string (entry->sy.name); | |
d3b740ca | 185 | |
5014c2d2 | 186 | return entry->sy.hash; |
d3b740ca ML |
187 | } |
188 | ||
189 | /* Equality function for a symbol_entry. */ | |
190 | ||
191 | static int | |
192 | eq_symbol_entry (const void *a, const void *b) | |
193 | { | |
194 | const symbol_entry_t *ea = (const symbol_entry_t *) a; | |
195 | const symbol_entry_t *eb = (const symbol_entry_t *) b; | |
196 | ||
5014c2d2 AM |
197 | return (ea->sy.hash == eb->sy.hash |
198 | && strcmp (ea->sy.name, eb->sy.name) == 0); | |
d3b740ca ML |
199 | } |
200 | ||
201 | static void * | |
5014c2d2 | 202 | symbol_entry_find (htab_t table, const char *name) |
d3b740ca | 203 | { |
5014c2d2 | 204 | hashval_t hash = htab_hash_string (name); |
578c64a4 | 205 | symbol_entry_t needle = { { { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }, |
e37c930f | 206 | hash, name, 0, 0, 0 } }; |
5014c2d2 | 207 | return htab_find_with_hash (table, &needle, hash); |
d3b740ca ML |
208 | } |
209 | ||
210 | ||
252b5132 RH |
211 | /* This is non-zero if symbols are case sensitive, which is the |
212 | default. */ | |
213 | int symbols_case_sensitive = 1; | |
214 | ||
215 | #ifndef WORKING_DOT_WORD | |
216 | extern int new_broken_words; | |
217 | #endif | |
218 | ||
d3b740ca | 219 | static htab_t sy_hash; |
252b5132 | 220 | |
7c743825 | 221 | /* Below are commented in "symbols.h". */ |
252b5132 RH |
222 | symbolS *symbol_rootP; |
223 | symbolS *symbol_lastP; | |
224 | symbolS abs_symbol; | |
5014c2d2 | 225 | struct xsymbol abs_symbol_x; |
4a826962 | 226 | symbolS dot_symbol; |
5014c2d2 | 227 | struct xsymbol dot_symbol_x; |
252b5132 RH |
228 | |
229 | #ifdef DEBUG_SYMS | |
230 | #define debug_verify_symchain verify_symbol_chain | |
231 | #else | |
232 | #define debug_verify_symchain(root, last) ((void) 0) | |
233 | #endif | |
234 | ||
aa257fcd NC |
235 | #define DOLLAR_LABEL_CHAR '\001' |
236 | #define LOCAL_LABEL_CHAR '\002' | |
237 | ||
df58fc94 RS |
238 | #ifndef TC_LABEL_IS_LOCAL |
239 | #define TC_LABEL_IS_LOCAL(name) 0 | |
240 | #endif | |
241 | ||
252b5132 | 242 | struct obstack notes; |
22ba0981 | 243 | #ifdef TE_PE |
977cdf5a NC |
244 | /* The name of an external symbol which is |
245 | used to make weak PE symbol names unique. */ | |
246 | const char * an_external_name; | |
247 | #endif | |
252b5132 | 248 | |
b9bb4a93 | 249 | static const char *save_symbol_name (const char *); |
74937d39 KH |
250 | static void fb_label_init (void); |
251 | static long dollar_label_instance (long); | |
252 | static long fb_label_instance (long); | |
252b5132 | 253 | |
74937d39 | 254 | static void print_binary (FILE *, const char *, expressionS *); |
252b5132 | 255 | |
7c743825 | 256 | /* Return a pointer to a new symbol. Die if we can't make a new |
252b5132 RH |
257 | symbol. Fill in the symbol's values. Add symbol to end of symbol |
258 | chain. | |
7c743825 | 259 | |
252b5132 RH |
260 | This function should be called in the general case of creating a |
261 | symbol. However, if the output file symbol table has already been | |
262 | set, and you are certain that this symbol won't be wanted in the | |
263 | output file, you can call symbol_create. */ | |
264 | ||
265 | symbolS * | |
e01e1cee | 266 | symbol_new (const char *name, segT segment, fragS *frag, valueT valu) |
252b5132 | 267 | { |
e01e1cee | 268 | symbolS *symbolP = symbol_create (name, segment, frag, valu); |
252b5132 | 269 | |
7c743825 | 270 | /* Link to end of symbol chain. */ |
252b5132 RH |
271 | symbol_append (symbolP, symbol_lastP, &symbol_rootP, &symbol_lastP); |
272 | ||
273 | return symbolP; | |
274 | } | |
275 | ||
49309057 ILT |
276 | /* Save a symbol name on a permanent obstack, and convert it according |
277 | to the object file format. */ | |
278 | ||
b9bb4a93 | 279 | static const char * |
74937d39 | 280 | save_symbol_name (const char *name) |
252b5132 | 281 | { |
e57e6ddc | 282 | size_t name_length; |
49309057 | 283 | char *ret; |
252b5132 | 284 | |
0df8ad28 | 285 | gas_assert (name != NULL); |
7c743825 | 286 | name_length = strlen (name) + 1; /* +1 for \0. */ |
252b5132 | 287 | obstack_grow (¬es, name, name_length); |
1e9cc1c2 | 288 | ret = (char *) obstack_finish (¬es); |
49309057 | 289 | |
252b5132 | 290 | #ifdef tc_canonicalize_symbol_name |
49309057 | 291 | ret = tc_canonicalize_symbol_name (ret); |
252b5132 RH |
292 | #endif |
293 | ||
294 | if (! symbols_case_sensitive) | |
295 | { | |
3882b010 | 296 | char *s; |
252b5132 | 297 | |
3882b010 L |
298 | for (s = ret; *s != '\0'; s++) |
299 | *s = TOUPPER (*s); | |
252b5132 RH |
300 | } |
301 | ||
49309057 ILT |
302 | return ret; |
303 | } | |
304 | ||
5014c2d2 AM |
305 | static void |
306 | symbol_init (symbolS *symbolP, const char *name, asection *sec, | |
307 | fragS *frag, valueT valu) | |
49309057 | 308 | { |
5014c2d2 | 309 | symbolP->frag = frag; |
252b5132 RH |
310 | symbolP->bsym = bfd_make_empty_symbol (stdoutput); |
311 | if (symbolP->bsym == NULL) | |
885afe7b | 312 | as_fatal ("bfd_make_empty_symbol: %s", bfd_errmsg (bfd_get_error ())); |
5014c2d2 AM |
313 | symbolP->bsym->name = name; |
314 | symbolP->bsym->section = sec; | |
252b5132 | 315 | |
578c64a4 NC |
316 | if (multibyte_handling == multibyte_warn_syms |
317 | && ! symbolP->flags.local_symbol | |
318 | && sec != undefined_section | |
319 | && ! symbolP->flags.multibyte_warned | |
320 | && scan_for_multibyte_characters ((const unsigned char *) name, | |
321 | (const unsigned char *) name + strlen (name), | |
322 | false /* Do not warn. */)) | |
323 | { | |
324 | as_warn (_("symbol '%s' contains multibyte characters"), name); | |
325 | symbolP->flags.multibyte_warned = 1; | |
326 | } | |
327 | ||
252b5132 | 328 | S_SET_VALUE (symbolP, valu); |
252b5132 | 329 | |
5014c2d2 | 330 | symbol_clear_list_pointers (symbolP); |
252b5132 RH |
331 | |
332 | obj_symbol_new_hook (symbolP); | |
333 | ||
334 | #ifdef tc_symbol_new_hook | |
335 | tc_symbol_new_hook (symbolP); | |
336 | #endif | |
5014c2d2 AM |
337 | } |
338 | ||
339 | /* Create a symbol. NAME is copied, the caller can destroy/modify. */ | |
340 | ||
341 | symbolS * | |
342 | symbol_create (const char *name, segT segment, fragS *frag, valueT valu) | |
343 | { | |
344 | const char *preserved_copy_of_name; | |
345 | symbolS *symbolP; | |
346 | size_t size; | |
347 | ||
348 | preserved_copy_of_name = save_symbol_name (name); | |
349 | ||
350 | size = sizeof (symbolS) + sizeof (struct xsymbol); | |
351 | symbolP = (symbolS *) obstack_alloc (¬es, size); | |
352 | ||
353 | /* symbol must be born in some fixed state. This seems as good as any. */ | |
354 | memset (symbolP, 0, size); | |
355 | symbolP->name = preserved_copy_of_name; | |
356 | symbolP->x = (struct xsymbol *) (symbolP + 1); | |
357 | ||
358 | symbol_init (symbolP, preserved_copy_of_name, segment, frag, valu); | |
252b5132 RH |
359 | |
360 | return symbolP; | |
361 | } | |
362 | \f | |
49309057 ILT |
363 | |
364 | /* Local symbol support. If we can get away with it, we keep only a | |
365 | small amount of information for local symbols. */ | |
366 | ||
49309057 ILT |
367 | /* Used for statistics. */ |
368 | ||
369 | static unsigned long local_symbol_count; | |
370 | static unsigned long local_symbol_conversion_count; | |
371 | ||
49309057 ILT |
372 | /* Create a local symbol and insert it into the local hash table. */ |
373 | ||
00ce9deb | 374 | struct local_symbol * |
e01e1cee | 375 | local_symbol_make (const char *name, segT section, fragS *frag, valueT val) |
49309057 | 376 | { |
b9bb4a93 | 377 | const char *name_copy; |
49309057 | 378 | struct local_symbol *ret; |
3c0d9d71 | 379 | struct symbol_flags flags = { .local_symbol = 1, .resolved = 0 }; |
49309057 ILT |
380 | |
381 | ++local_symbol_count; | |
382 | ||
383 | name_copy = save_symbol_name (name); | |
384 | ||
1e9cc1c2 | 385 | ret = (struct local_symbol *) obstack_alloc (¬es, sizeof *ret); |
3c0d9d71 | 386 | ret->flags = flags; |
5014c2d2 | 387 | ret->hash = 0; |
3c0d9d71 | 388 | ret->name = name_copy; |
5014c2d2 | 389 | ret->frag = frag; |
3c0d9d71 | 390 | ret->section = section; |
3c0d9d71 | 391 | ret->value = val; |
49309057 | 392 | |
fe0e921f | 393 | htab_insert (sy_hash, ret, 1); |
49309057 ILT |
394 | |
395 | return ret; | |
396 | } | |
397 | ||
5014c2d2 | 398 | /* Convert a local symbol into a real symbol. */ |
49309057 ILT |
399 | |
400 | static symbolS * | |
5014c2d2 | 401 | local_symbol_convert (void *sym) |
49309057 | 402 | { |
5014c2d2 AM |
403 | symbol_entry_t *ent = (symbol_entry_t *) sym; |
404 | struct xsymbol *xtra; | |
405 | valueT val; | |
49309057 | 406 | |
5014c2d2 | 407 | gas_assert (ent->lsy.flags.local_symbol); |
49309057 ILT |
408 | |
409 | ++local_symbol_conversion_count; | |
410 | ||
85d14aae AM |
411 | xtra = (struct xsymbol *) obstack_alloc (¬es, sizeof (*xtra)); |
412 | memset (xtra, 0, sizeof (*xtra)); | |
5014c2d2 AM |
413 | val = ent->lsy.value; |
414 | ent->sy.x = xtra; | |
49309057 ILT |
415 | |
416 | /* Local symbols are always either defined or used. */ | |
5014c2d2 AM |
417 | ent->sy.flags.used = 1; |
418 | ent->sy.flags.local_symbol = 0; | |
49309057 | 419 | |
5014c2d2 AM |
420 | symbol_init (&ent->sy, ent->lsy.name, ent->lsy.section, ent->lsy.frag, val); |
421 | symbol_append (&ent->sy, symbol_lastP, &symbol_rootP, &symbol_lastP); | |
49309057 | 422 | |
5014c2d2 | 423 | return &ent->sy; |
49309057 | 424 | } |
49309057 | 425 | \f |
a3371076 AM |
426 | static void |
427 | define_sym_at_dot (symbolS *symbolP) | |
428 | { | |
3c0d9d71 | 429 | symbolP->frag = frag_now; |
a3371076 AM |
430 | S_SET_VALUE (symbolP, (valueT) frag_now_fix ()); |
431 | S_SET_SEGMENT (symbolP, now_seg); | |
432 | } | |
433 | ||
7c743825 KH |
434 | /* We have just seen "<name>:". |
435 | Creates a struct symbol unless it already exists. | |
436 | ||
437 | Gripes if we are redefining a symbol incompatibly (and ignores it). */ | |
252b5132 | 438 | |
252b5132 | 439 | symbolS * |
74937d39 | 440 | colon (/* Just seen "x:" - rattle symbols & frags. */ |
2b0f3761 | 441 | const char *sym_name /* Symbol name, as a canonical string. */ |
74937d39 | 442 | /* We copy this string: OK to alter later. */) |
252b5132 | 443 | { |
ed9e98c2 | 444 | symbolS *symbolP; /* Symbol we are working with. */ |
252b5132 | 445 | |
7cf10893 | 446 | /* Sun local labels go out of scope whenever a non-local symbol is |
252b5132 | 447 | defined. */ |
7be1c489 AM |
448 | if (LOCAL_LABELS_DOLLAR |
449 | && !bfd_is_local_label_name (stdoutput, sym_name)) | |
450 | dollar_label_clear (); | |
252b5132 RH |
451 | |
452 | #ifndef WORKING_DOT_WORD | |
453 | if (new_broken_words) | |
454 | { | |
455 | struct broken_word *a; | |
456 | int possible_bytes; | |
457 | fragS *frag_tmp; | |
458 | char *frag_opcode; | |
459 | ||
7cf10893 NC |
460 | if (now_seg == absolute_section) |
461 | { | |
462 | as_bad (_("cannot define symbol `%s' in absolute section"), sym_name); | |
463 | return NULL; | |
464 | } | |
1d3b2b27 | 465 | |
252b5132 RH |
466 | possible_bytes = (md_short_jump_size |
467 | + new_broken_words * md_long_jump_size); | |
468 | ||
469 | frag_tmp = frag_now; | |
470 | frag_opcode = frag_var (rs_broken_word, | |
471 | possible_bytes, | |
472 | possible_bytes, | |
473 | (relax_substateT) 0, | |
474 | (symbolS *) broken_words, | |
475 | (offsetT) 0, | |
476 | NULL); | |
477 | ||
7c743825 KH |
478 | /* We want to store the pointer to where to insert the jump |
479 | table in the fr_opcode of the rs_broken_word frag. This | |
480 | requires a little hackery. */ | |
252b5132 RH |
481 | while (frag_tmp |
482 | && (frag_tmp->fr_type != rs_broken_word | |
483 | || frag_tmp->fr_opcode)) | |
484 | frag_tmp = frag_tmp->fr_next; | |
485 | know (frag_tmp); | |
486 | frag_tmp->fr_opcode = frag_opcode; | |
487 | new_broken_words = 0; | |
488 | ||
489 | for (a = broken_words; a && a->dispfrag == 0; a = a->next_broken_word) | |
490 | a->dispfrag = frag_tmp; | |
491 | } | |
492 | #endif /* WORKING_DOT_WORD */ | |
493 | ||
cdaa5616 IS |
494 | #ifdef obj_frob_colon |
495 | obj_frob_colon (sym_name); | |
496 | #endif | |
497 | ||
252b5132 RH |
498 | if ((symbolP = symbol_find (sym_name)) != 0) |
499 | { | |
06e77878 | 500 | S_CLEAR_WEAKREFR (symbolP); |
252b5132 RH |
501 | #ifdef RESOLVE_SYMBOL_REDEFINITION |
502 | if (RESOLVE_SYMBOL_REDEFINITION (symbolP)) | |
503 | return symbolP; | |
504 | #endif | |
7c743825 | 505 | /* Now check for undefined symbols. */ |
5014c2d2 | 506 | if (symbolP->flags.local_symbol) |
49309057 ILT |
507 | { |
508 | struct local_symbol *locsym = (struct local_symbol *) symbolP; | |
509 | ||
3c0d9d71 | 510 | if (locsym->section != undefined_section |
5014c2d2 | 511 | && (locsym->frag != frag_now |
3c0d9d71 AM |
512 | || locsym->section != now_seg |
513 | || locsym->value != frag_now_fix ())) | |
49309057 | 514 | { |
0e389e77 | 515 | as_bad (_("symbol `%s' is already defined"), sym_name); |
49309057 ILT |
516 | return symbolP; |
517 | } | |
518 | ||
3c0d9d71 | 519 | locsym->section = now_seg; |
5014c2d2 | 520 | locsym->frag = frag_now; |
3c0d9d71 | 521 | locsym->value = frag_now_fix (); |
49309057 | 522 | } |
b54788f8 | 523 | else if (!(S_IS_DEFINED (symbolP) || symbol_equated_p (symbolP)) |
92757bc9 JB |
524 | || S_IS_COMMON (symbolP) |
525 | || S_IS_VOLATILE (symbolP)) | |
252b5132 | 526 | { |
89cdfe57 | 527 | if (S_IS_VOLATILE (symbolP)) |
92757bc9 JB |
528 | { |
529 | symbolP = symbol_clone (symbolP, 1); | |
530 | S_SET_VALUE (symbolP, 0); | |
531 | S_CLEAR_VOLATILE (symbolP); | |
532 | } | |
252b5132 RH |
533 | if (S_GET_VALUE (symbolP) == 0) |
534 | { | |
a3371076 | 535 | define_sym_at_dot (symbolP); |
252b5132 RH |
536 | #ifdef N_UNDF |
537 | know (N_UNDF == 0); | |
7c743825 | 538 | #endif /* if we have one, it better be zero. */ |
252b5132 RH |
539 | |
540 | } | |
541 | else | |
542 | { | |
7c743825 KH |
543 | /* There are still several cases to check: |
544 | ||
545 | A .comm/.lcomm symbol being redefined as initialized | |
546 | data is OK | |
547 | ||
548 | A .comm/.lcomm symbol being redefined with a larger | |
549 | size is also OK | |
550 | ||
551 | This only used to be allowed on VMS gas, but Sun cc | |
552 | on the sparc also depends on it. */ | |
252b5132 RH |
553 | |
554 | if (((!S_IS_DEBUG (symbolP) | |
555 | && (!S_IS_DEFINED (symbolP) || S_IS_COMMON (symbolP)) | |
556 | && S_IS_EXTERNAL (symbolP)) | |
557 | || S_GET_SEGMENT (symbolP) == bss_section) | |
558 | && (now_seg == data_section | |
b3ce1bf7 | 559 | || now_seg == bss_section |
252b5132 RH |
560 | || now_seg == S_GET_SEGMENT (symbolP))) |
561 | { | |
7c743825 | 562 | /* Select which of the 2 cases this is. */ |
252b5132 RH |
563 | if (now_seg != data_section) |
564 | { | |
7c743825 KH |
565 | /* New .comm for prev .comm symbol. |
566 | ||
567 | If the new size is larger we just change its | |
568 | value. If the new size is smaller, we ignore | |
569 | this symbol. */ | |
252b5132 RH |
570 | if (S_GET_VALUE (symbolP) |
571 | < ((unsigned) frag_now_fix ())) | |
572 | { | |
573 | S_SET_VALUE (symbolP, (valueT) frag_now_fix ()); | |
574 | } | |
575 | } | |
576 | else | |
577 | { | |
578 | /* It is a .comm/.lcomm being converted to initialized | |
579 | data. */ | |
a3371076 | 580 | define_sym_at_dot (symbolP); |
252b5132 RH |
581 | } |
582 | } | |
583 | else | |
584 | { | |
a8eb42a8 | 585 | #if (!defined (OBJ_AOUT) && !defined (OBJ_MAYBE_AOUT)) |
4c63da97 | 586 | static const char *od_buf = ""; |
252b5132 | 587 | #else |
4c63da97 AM |
588 | char od_buf[100]; |
589 | od_buf[0] = '\0'; | |
4c63da97 | 590 | if (OUTPUT_FLAVOR == bfd_target_aout_flavour) |
d1a6c242 KH |
591 | sprintf (od_buf, "%d.%d.", |
592 | S_GET_OTHER (symbolP), | |
593 | S_GET_DESC (symbolP)); | |
4c63da97 | 594 | #endif |
0e389e77 | 595 | as_bad (_("symbol `%s' is already defined as \"%s\"/%s%ld"), |
252b5132 RH |
596 | sym_name, |
597 | segment_name (S_GET_SEGMENT (symbolP)), | |
4c63da97 | 598 | od_buf, |
252b5132 | 599 | (long) S_GET_VALUE (symbolP)); |
252b5132 | 600 | } |
7c743825 | 601 | } /* if the undefined symbol has no value */ |
252b5132 RH |
602 | } |
603 | else | |
604 | { | |
7c743825 | 605 | /* Don't blow up if the definition is the same. */ |
3c0d9d71 | 606 | if (!(frag_now == symbolP->frag |
252b5132 RH |
607 | && S_GET_VALUE (symbolP) == frag_now_fix () |
608 | && S_GET_SEGMENT (symbolP) == now_seg)) | |
92757bc9 JB |
609 | { |
610 | as_bad (_("symbol `%s' is already defined"), sym_name); | |
611 | symbolP = symbol_clone (symbolP, 0); | |
a3371076 | 612 | define_sym_at_dot (symbolP); |
92757bc9 | 613 | } |
d4887adc | 614 | } |
252b5132 RH |
615 | |
616 | } | |
49309057 ILT |
617 | else if (! flag_keep_locals && bfd_is_local_label_name (stdoutput, sym_name)) |
618 | { | |
e01e1cee AM |
619 | symbolP = (symbolS *) local_symbol_make (sym_name, now_seg, frag_now, |
620 | frag_now_fix ()); | |
49309057 | 621 | } |
252b5132 RH |
622 | else |
623 | { | |
e01e1cee | 624 | symbolP = symbol_new (sym_name, now_seg, frag_now, frag_now_fix ()); |
252b5132 RH |
625 | |
626 | symbol_table_insert (symbolP); | |
d4887adc | 627 | } |
252b5132 RH |
628 | |
629 | if (mri_common_symbol != NULL) | |
630 | { | |
631 | /* This symbol is actually being defined within an MRI common | |
1d3b2b27 | 632 | section. This requires special handling. */ |
5014c2d2 AM |
633 | if (symbolP->flags.local_symbol) |
634 | symbolP = local_symbol_convert (symbolP); | |
635 | symbolP->x->value.X_op = O_symbol; | |
636 | symbolP->x->value.X_add_symbol = mri_common_symbol; | |
637 | symbolP->x->value.X_add_number = S_GET_VALUE (mri_common_symbol); | |
3c0d9d71 | 638 | symbolP->frag = &zero_address_frag; |
252b5132 | 639 | S_SET_SEGMENT (symbolP, expr_section); |
3c0d9d71 | 640 | symbolP->flags.mri_common = 1; |
252b5132 RH |
641 | } |
642 | ||
643 | #ifdef tc_frob_label | |
644 | tc_frob_label (symbolP); | |
645 | #endif | |
646 | #ifdef obj_frob_label | |
647 | obj_frob_label (symbolP); | |
648 | #endif | |
649 | ||
650 | return symbolP; | |
651 | } | |
652 | \f | |
7c743825 | 653 | /* Die if we can't insert the symbol. */ |
252b5132 | 654 | |
7c743825 | 655 | void |
74937d39 | 656 | symbol_table_insert (symbolS *symbolP) |
252b5132 | 657 | { |
252b5132 | 658 | know (symbolP); |
252b5132 | 659 | |
fe0e921f | 660 | htab_insert (sy_hash, symbolP, 1); |
7c743825 | 661 | } |
252b5132 | 662 | \f |
7c743825 KH |
663 | /* If a symbol name does not exist, create it as undefined, and insert |
664 | it into the symbol table. Return a pointer to it. */ | |
665 | ||
252b5132 | 666 | symbolS * |
74937d39 | 667 | symbol_find_or_make (const char *name) |
252b5132 | 668 | { |
ed9e98c2 | 669 | symbolS *symbolP; |
252b5132 RH |
670 | |
671 | symbolP = symbol_find (name); | |
672 | ||
673 | if (symbolP == NULL) | |
674 | { | |
49309057 ILT |
675 | if (! flag_keep_locals && bfd_is_local_label_name (stdoutput, name)) |
676 | { | |
677 | symbolP = md_undefined_symbol ((char *) name); | |
678 | if (symbolP != NULL) | |
679 | return symbolP; | |
680 | ||
681 | symbolP = (symbolS *) local_symbol_make (name, undefined_section, | |
e01e1cee | 682 | &zero_address_frag, 0); |
49309057 ILT |
683 | return symbolP; |
684 | } | |
49309057 | 685 | |
252b5132 RH |
686 | symbolP = symbol_make (name); |
687 | ||
688 | symbol_table_insert (symbolP); | |
689 | } /* if symbol wasn't found */ | |
690 | ||
691 | return (symbolP); | |
7c743825 | 692 | } |
252b5132 RH |
693 | |
694 | symbolS * | |
74937d39 | 695 | symbol_make (const char *name) |
252b5132 RH |
696 | { |
697 | symbolS *symbolP; | |
698 | ||
7c743825 | 699 | /* Let the machine description default it, e.g. for register names. */ |
252b5132 RH |
700 | symbolP = md_undefined_symbol ((char *) name); |
701 | ||
702 | if (!symbolP) | |
e01e1cee | 703 | symbolP = symbol_new (name, undefined_section, &zero_address_frag, 0); |
252b5132 RH |
704 | |
705 | return (symbolP); | |
7c743825 | 706 | } |
252b5132 | 707 | |
9497f5ac NC |
708 | symbolS * |
709 | symbol_clone (symbolS *orgsymP, int replace) | |
710 | { | |
711 | symbolS *newsymP; | |
6a2b6326 | 712 | asymbol *bsymorg, *bsymnew; |
9497f5ac | 713 | |
4a826962 MR |
714 | /* Make sure we never clone the dot special symbol. */ |
715 | gas_assert (orgsymP != &dot_symbol); | |
716 | ||
5014c2d2 AM |
717 | /* When cloning a local symbol it isn't absolutely necessary to |
718 | convert the original, but converting makes the code much | |
719 | simpler to cover this unexpected case. As of 2020-08-21 | |
720 | symbol_clone won't be called on a local symbol. */ | |
721 | if (orgsymP->flags.local_symbol) | |
722 | orgsymP = local_symbol_convert (orgsymP); | |
6a2b6326 | 723 | bsymorg = orgsymP->bsym; |
9497f5ac | 724 | |
5014c2d2 AM |
725 | newsymP = (symbolS *) obstack_alloc (¬es, (sizeof (symbolS) |
726 | + sizeof (struct xsymbol))); | |
9497f5ac | 727 | *newsymP = *orgsymP; |
5014c2d2 AM |
728 | newsymP->x = (struct xsymbol *) (newsymP + 1); |
729 | *newsymP->x = *orgsymP->x; | |
6a2b6326 JB |
730 | bsymnew = bfd_make_empty_symbol (bfd_asymbol_bfd (bsymorg)); |
731 | if (bsymnew == NULL) | |
885afe7b | 732 | as_fatal ("bfd_make_empty_symbol: %s", bfd_errmsg (bfd_get_error ())); |
6a2b6326 JB |
733 | newsymP->bsym = bsymnew; |
734 | bsymnew->name = bsymorg->name; | |
25313d6a | 735 | bsymnew->flags = bsymorg->flags & ~BSF_SECTION_SYM; |
9d75b288 | 736 | bsymnew->section = bsymorg->section; |
6a2b6326 JB |
737 | bfd_copy_private_symbol_data (bfd_asymbol_bfd (bsymorg), bsymorg, |
738 | bfd_asymbol_bfd (bsymnew), bsymnew); | |
739 | ||
740 | #ifdef obj_symbol_clone_hook | |
741 | obj_symbol_clone_hook (newsymP, orgsymP); | |
742 | #endif | |
743 | ||
744 | #ifdef tc_symbol_clone_hook | |
745 | tc_symbol_clone_hook (newsymP, orgsymP); | |
746 | #endif | |
9497f5ac NC |
747 | |
748 | if (replace) | |
749 | { | |
750 | if (symbol_rootP == orgsymP) | |
751 | symbol_rootP = newsymP; | |
5014c2d2 | 752 | else if (orgsymP->x->previous) |
9497f5ac | 753 | { |
5014c2d2 AM |
754 | orgsymP->x->previous->x->next = newsymP; |
755 | orgsymP->x->previous = NULL; | |
9497f5ac NC |
756 | } |
757 | if (symbol_lastP == orgsymP) | |
758 | symbol_lastP = newsymP; | |
5014c2d2 AM |
759 | else if (orgsymP->x->next) |
760 | orgsymP->x->next->x->previous = newsymP; | |
73e24c68 AM |
761 | |
762 | /* Symbols that won't be output can't be external. */ | |
763 | S_CLEAR_EXTERNAL (orgsymP); | |
5014c2d2 | 764 | orgsymP->x->previous = orgsymP->x->next = orgsymP; |
9497f5ac NC |
765 | debug_verify_symchain (symbol_rootP, symbol_lastP); |
766 | ||
767 | symbol_table_insert (newsymP); | |
768 | } | |
bdf128d6 | 769 | else |
73e24c68 AM |
770 | { |
771 | /* Symbols that won't be output can't be external. */ | |
772 | S_CLEAR_EXTERNAL (newsymP); | |
5014c2d2 | 773 | newsymP->x->previous = newsymP->x->next = newsymP; |
73e24c68 | 774 | } |
9497f5ac NC |
775 | |
776 | return newsymP; | |
777 | } | |
778 | ||
779 | /* Referenced symbols, if they are forward references, need to be cloned | |
780 | (without replacing the original) so that the value of the referenced | |
38cf168b | 781 | symbols at the point of use is saved by the clone. */ |
9497f5ac NC |
782 | |
783 | #undef symbol_clone_if_forward_ref | |
784 | symbolS * | |
785 | symbol_clone_if_forward_ref (symbolS *symbolP, int is_forward) | |
786 | { | |
5014c2d2 | 787 | if (symbolP && !symbolP->flags.local_symbol) |
9497f5ac | 788 | { |
5014c2d2 AM |
789 | symbolS *orig_add_symbol = symbolP->x->value.X_add_symbol; |
790 | symbolS *orig_op_symbol = symbolP->x->value.X_op_symbol; | |
38cf168b AM |
791 | symbolS *add_symbol = orig_add_symbol; |
792 | symbolS *op_symbol = orig_op_symbol; | |
9497f5ac | 793 | |
3c0d9d71 | 794 | if (symbolP->flags.forward_ref) |
9497f5ac NC |
795 | is_forward = 1; |
796 | ||
797 | if (is_forward) | |
798 | { | |
799 | /* assign_symbol() clones volatile symbols; pre-existing expressions | |
800 | hold references to the original instance, but want the current | |
801 | value. Just repeat the lookup. */ | |
802 | if (add_symbol && S_IS_VOLATILE (add_symbol)) | |
803 | add_symbol = symbol_find_exact (S_GET_NAME (add_symbol)); | |
804 | if (op_symbol && S_IS_VOLATILE (op_symbol)) | |
805 | op_symbol = symbol_find_exact (S_GET_NAME (op_symbol)); | |
806 | } | |
807 | ||
3c0d9d71 | 808 | /* Re-using resolving here, as this routine cannot get called from |
9497f5ac | 809 | symbol resolution code. */ |
158184ac | 810 | if ((symbolP->bsym->section == expr_section |
3c0d9d71 AM |
811 | || symbolP->flags.forward_ref) |
812 | && !symbolP->flags.resolving) | |
9497f5ac | 813 | { |
3c0d9d71 | 814 | symbolP->flags.resolving = 1; |
9497f5ac NC |
815 | add_symbol = symbol_clone_if_forward_ref (add_symbol, is_forward); |
816 | op_symbol = symbol_clone_if_forward_ref (op_symbol, is_forward); | |
3c0d9d71 | 817 | symbolP->flags.resolving = 0; |
9497f5ac NC |
818 | } |
819 | ||
3c0d9d71 | 820 | if (symbolP->flags.forward_ref |
38cf168b AM |
821 | || add_symbol != orig_add_symbol |
822 | || op_symbol != orig_op_symbol) | |
3df4e177 | 823 | { |
4a826962 MR |
824 | if (symbolP != &dot_symbol) |
825 | { | |
826 | symbolP = symbol_clone (symbolP, 0); | |
3c0d9d71 | 827 | symbolP->flags.resolving = 0; |
4a826962 MR |
828 | } |
829 | else | |
a1facbec MR |
830 | { |
831 | symbolP = symbol_temp_new_now (); | |
832 | #ifdef tc_new_dot_label | |
833 | tc_new_dot_label (symbolP); | |
834 | #endif | |
835 | } | |
3df4e177 | 836 | } |
9497f5ac | 837 | |
5014c2d2 AM |
838 | symbolP->x->value.X_add_symbol = add_symbol; |
839 | symbolP->x->value.X_op_symbol = op_symbol; | |
9497f5ac NC |
840 | } |
841 | ||
842 | return symbolP; | |
843 | } | |
844 | ||
b7d6ed97 | 845 | symbolS * |
e01e1cee | 846 | symbol_temp_new (segT seg, fragS *frag, valueT ofs) |
b7d6ed97 | 847 | { |
e01e1cee | 848 | return symbol_new (FAKE_LABEL_NAME, seg, frag, ofs); |
b7d6ed97 RH |
849 | } |
850 | ||
851 | symbolS * | |
74937d39 | 852 | symbol_temp_new_now (void) |
b7d6ed97 | 853 | { |
e01e1cee | 854 | return symbol_temp_new (now_seg, frag_now, frag_now_fix ()); |
b7d6ed97 RH |
855 | } |
856 | ||
d18d1999 CE |
857 | symbolS * |
858 | symbol_temp_new_now_octets (void) | |
859 | { | |
e01e1cee | 860 | return symbol_temp_new (now_seg, frag_now, frag_now_fix_octets ()); |
d18d1999 CE |
861 | } |
862 | ||
b7d6ed97 | 863 | symbolS * |
74937d39 | 864 | symbol_temp_make (void) |
b7d6ed97 | 865 | { |
756d1d01 | 866 | return symbol_make (FAKE_LABEL_NAME); |
b7d6ed97 RH |
867 | } |
868 | ||
7c743825 KH |
869 | /* Implement symbol table lookup. |
870 | In: A symbol's name as a string: '\0' can't be part of a symbol name. | |
871 | Out: NULL if the name was not in the symbol table, else the address | |
872 | of a struct symbol associated with that name. */ | |
252b5132 | 873 | |
9758f3fc | 874 | symbolS * |
74937d39 | 875 | symbol_find_exact (const char *name) |
06e77878 AO |
876 | { |
877 | return symbol_find_exact_noref (name, 0); | |
878 | } | |
879 | ||
880 | symbolS * | |
881 | symbol_find_exact_noref (const char *name, int noref) | |
9758f3fc | 882 | { |
5014c2d2 | 883 | symbolS *sym = symbol_entry_find (sy_hash, name); |
06e77878 AO |
884 | |
885 | /* Any references to the symbol, except for the reference in | |
886 | .weakref, must clear this flag, such that the symbol does not | |
887 | turn into a weak symbol. Note that we don't have to handle the | |
888 | local_symbol case, since a weakrefd is always promoted out of the | |
889 | local_symbol table when it is turned into a weak symbol. */ | |
890 | if (sym && ! noref) | |
891 | S_CLEAR_WEAKREFD (sym); | |
892 | ||
893 | return sym; | |
9758f3fc AM |
894 | } |
895 | ||
252b5132 | 896 | symbolS * |
91c4c449 | 897 | symbol_find (const char *name) |
06e77878 AO |
898 | { |
899 | return symbol_find_noref (name, 0); | |
900 | } | |
901 | ||
902 | symbolS * | |
903 | symbol_find_noref (const char *name, int noref) | |
252b5132 | 904 | { |
e1fa0163 NC |
905 | symbolS * result; |
906 | char * copy = NULL; | |
907 | ||
252b5132 RH |
908 | #ifdef tc_canonicalize_symbol_name |
909 | { | |
e1fa0163 | 910 | copy = xstrdup (name); |
252b5132 RH |
911 | name = tc_canonicalize_symbol_name (copy); |
912 | } | |
913 | #endif | |
914 | ||
915 | if (! symbols_case_sensitive) | |
916 | { | |
03987ced | 917 | const char *orig; |
e1fa0163 | 918 | char *copy2 = NULL; |
03987ced RH |
919 | unsigned char c; |
920 | ||
921 | orig = name; | |
e1fa0163 NC |
922 | if (copy != NULL) |
923 | copy2 = copy; | |
325801bd | 924 | name = copy = XNEWVEC (char, strlen (name) + 1); |
03987ced RH |
925 | |
926 | while ((c = *orig++) != '\0') | |
e1fa0163 | 927 | *copy++ = TOUPPER (c); |
03987ced | 928 | *copy = '\0'; |
e1fa0163 | 929 | |
9fbb53c7 | 930 | free (copy2); |
e1fa0163 | 931 | copy = (char *) name; |
252b5132 RH |
932 | } |
933 | ||
e1fa0163 | 934 | result = symbol_find_exact_noref (name, noref); |
9fbb53c7 | 935 | free (copy); |
e1fa0163 | 936 | return result; |
252b5132 RH |
937 | } |
938 | ||
7c743825 KH |
939 | /* Once upon a time, symbols were kept in a singly linked list. At |
940 | least coff needs to be able to rearrange them from time to time, for | |
941 | which a doubly linked list is much more convenient. Loic did these | |
942 | as macros which seemed dangerous to me so they're now functions. | |
943 | xoxorich. */ | |
944 | ||
945 | /* Link symbol ADDME after symbol TARGET in the chain. */ | |
252b5132 | 946 | |
7c743825 | 947 | void |
74937d39 KH |
948 | symbol_append (symbolS *addme, symbolS *target, |
949 | symbolS **rootPP, symbolS **lastPP) | |
252b5132 | 950 | { |
3c0d9d71 AM |
951 | extern int symbol_table_frozen; |
952 | if (symbol_table_frozen) | |
953 | abort (); | |
5014c2d2 | 954 | if (addme->flags.local_symbol) |
49309057 | 955 | abort (); |
5014c2d2 | 956 | if (target != NULL && target->flags.local_symbol) |
49309057 ILT |
957 | abort (); |
958 | ||
252b5132 RH |
959 | if (target == NULL) |
960 | { | |
961 | know (*rootPP == NULL); | |
962 | know (*lastPP == NULL); | |
5014c2d2 AM |
963 | addme->x->next = NULL; |
964 | addme->x->previous = NULL; | |
252b5132 RH |
965 | *rootPP = addme; |
966 | *lastPP = addme; | |
967 | return; | |
7c743825 | 968 | } /* if the list is empty */ |
252b5132 | 969 | |
5014c2d2 | 970 | if (target->x->next != NULL) |
252b5132 | 971 | { |
5014c2d2 | 972 | target->x->next->x->previous = addme; |
252b5132 RH |
973 | } |
974 | else | |
975 | { | |
976 | know (*lastPP == target); | |
977 | *lastPP = addme; | |
7c743825 | 978 | } /* if we have a next */ |
252b5132 | 979 | |
5014c2d2 AM |
980 | addme->x->next = target->x->next; |
981 | target->x->next = addme; | |
982 | addme->x->previous = target; | |
252b5132 RH |
983 | |
984 | debug_verify_symchain (symbol_rootP, symbol_lastP); | |
985 | } | |
986 | ||
7c743825 KH |
987 | /* Set the chain pointers of SYMBOL to null. */ |
988 | ||
989 | void | |
74937d39 | 990 | symbol_clear_list_pointers (symbolS *symbolP) |
252b5132 | 991 | { |
5014c2d2 | 992 | if (symbolP->flags.local_symbol) |
49309057 | 993 | abort (); |
5014c2d2 AM |
994 | symbolP->x->next = NULL; |
995 | symbolP->x->previous = NULL; | |
252b5132 RH |
996 | } |
997 | ||
7c743825 KH |
998 | /* Remove SYMBOLP from the list. */ |
999 | ||
1000 | void | |
74937d39 | 1001 | symbol_remove (symbolS *symbolP, symbolS **rootPP, symbolS **lastPP) |
252b5132 | 1002 | { |
5014c2d2 | 1003 | if (symbolP->flags.local_symbol) |
49309057 ILT |
1004 | abort (); |
1005 | ||
252b5132 RH |
1006 | if (symbolP == *rootPP) |
1007 | { | |
5014c2d2 | 1008 | *rootPP = symbolP->x->next; |
7c743825 | 1009 | } /* if it was the root */ |
252b5132 RH |
1010 | |
1011 | if (symbolP == *lastPP) | |
1012 | { | |
5014c2d2 | 1013 | *lastPP = symbolP->x->previous; |
7c743825 | 1014 | } /* if it was the tail */ |
252b5132 | 1015 | |
5014c2d2 | 1016 | if (symbolP->x->next != NULL) |
252b5132 | 1017 | { |
5014c2d2 | 1018 | symbolP->x->next->x->previous = symbolP->x->previous; |
7c743825 | 1019 | } /* if not last */ |
252b5132 | 1020 | |
5014c2d2 | 1021 | if (symbolP->x->previous != NULL) |
252b5132 | 1022 | { |
5014c2d2 | 1023 | symbolP->x->previous->x->next = symbolP->x->next; |
7c743825 | 1024 | } /* if not first */ |
252b5132 RH |
1025 | |
1026 | debug_verify_symchain (*rootPP, *lastPP); | |
1027 | } | |
1028 | ||
7c743825 KH |
1029 | /* Link symbol ADDME before symbol TARGET in the chain. */ |
1030 | ||
1031 | void | |
74937d39 KH |
1032 | symbol_insert (symbolS *addme, symbolS *target, |
1033 | symbolS **rootPP, symbolS **lastPP ATTRIBUTE_UNUSED) | |
252b5132 | 1034 | { |
3c0d9d71 AM |
1035 | extern int symbol_table_frozen; |
1036 | if (symbol_table_frozen) | |
1037 | abort (); | |
5014c2d2 | 1038 | if (addme->flags.local_symbol) |
49309057 | 1039 | abort (); |
5014c2d2 | 1040 | if (target->flags.local_symbol) |
49309057 ILT |
1041 | abort (); |
1042 | ||
5014c2d2 | 1043 | if (target->x->previous != NULL) |
252b5132 | 1044 | { |
5014c2d2 | 1045 | target->x->previous->x->next = addme; |
252b5132 RH |
1046 | } |
1047 | else | |
1048 | { | |
1049 | know (*rootPP == target); | |
1050 | *rootPP = addme; | |
7c743825 | 1051 | } /* if not first */ |
252b5132 | 1052 | |
5014c2d2 AM |
1053 | addme->x->previous = target->x->previous; |
1054 | target->x->previous = addme; | |
1055 | addme->x->next = target; | |
252b5132 RH |
1056 | |
1057 | debug_verify_symchain (*rootPP, *lastPP); | |
1058 | } | |
1059 | ||
7c743825 | 1060 | void |
74937d39 | 1061 | verify_symbol_chain (symbolS *rootP, symbolS *lastP) |
252b5132 RH |
1062 | { |
1063 | symbolS *symbolP = rootP; | |
1064 | ||
1065 | if (symbolP == NULL) | |
1066 | return; | |
1067 | ||
1068 | for (; symbol_next (symbolP) != NULL; symbolP = symbol_next (symbolP)) | |
1069 | { | |
9c2799c2 | 1070 | gas_assert (symbolP->bsym != NULL); |
3c0d9d71 | 1071 | gas_assert (symbolP->flags.local_symbol == 0); |
5014c2d2 | 1072 | gas_assert (symbolP->x->next->x->previous == symbolP); |
252b5132 RH |
1073 | } |
1074 | ||
9c2799c2 | 1075 | gas_assert (lastP == symbolP); |
252b5132 RH |
1076 | } |
1077 | ||
8d1015a8 AM |
1078 | int |
1079 | symbol_on_chain (symbolS *s, symbolS *rootPP, symbolS *lastPP) | |
1080 | { | |
5014c2d2 AM |
1081 | return (!s->flags.local_symbol |
1082 | && ((s->x->next != s | |
1083 | && s->x->next != NULL | |
1084 | && s->x->next->x->previous == s) | |
8d1015a8 | 1085 | || s == lastPP) |
5014c2d2 AM |
1086 | && ((s->x->previous != s |
1087 | && s->x->previous != NULL | |
1088 | && s->x->previous->x->next == s) | |
8d1015a8 AM |
1089 | || s == rootPP)); |
1090 | } | |
1091 | ||
280d71bf DB |
1092 | #ifdef OBJ_COMPLEX_RELC |
1093 | ||
1094 | static int | |
1095 | use_complex_relocs_for (symbolS * symp) | |
1096 | { | |
5014c2d2 | 1097 | switch (symp->x->value.X_op) |
280d71bf DB |
1098 | { |
1099 | case O_constant: | |
1100 | return 0; | |
1101 | ||
280d71bf DB |
1102 | case O_multiply: |
1103 | case O_divide: | |
1104 | case O_modulus: | |
1105 | case O_left_shift: | |
1106 | case O_right_shift: | |
1107 | case O_bit_inclusive_or: | |
1108 | case O_bit_or_not: | |
1109 | case O_bit_exclusive_or: | |
1110 | case O_bit_and: | |
1111 | case O_add: | |
1112 | case O_subtract: | |
1113 | case O_eq: | |
1114 | case O_ne: | |
1115 | case O_lt: | |
1116 | case O_le: | |
1117 | case O_ge: | |
1118 | case O_gt: | |
1119 | case O_logical_and: | |
1120 | case O_logical_or: | |
5014c2d2 AM |
1121 | if ((S_IS_COMMON (symp->x->value.X_op_symbol) |
1122 | || S_IS_LOCAL (symp->x->value.X_op_symbol)) | |
1123 | && S_IS_DEFINED (symp->x->value.X_op_symbol) | |
1124 | && S_GET_SEGMENT (symp->x->value.X_op_symbol) != expr_section) | |
0f1309c8 AM |
1125 | { |
1126 | case O_symbol: | |
1127 | case O_symbol_rva: | |
1128 | case O_uminus: | |
1129 | case O_bit_not: | |
1130 | case O_logical_not: | |
5014c2d2 AM |
1131 | if ((S_IS_COMMON (symp->x->value.X_add_symbol) |
1132 | || S_IS_LOCAL (symp->x->value.X_add_symbol)) | |
1133 | && S_IS_DEFINED (symp->x->value.X_add_symbol) | |
1134 | && S_GET_SEGMENT (symp->x->value.X_add_symbol) != expr_section) | |
0f1309c8 AM |
1135 | return 0; |
1136 | } | |
280d71bf | 1137 | break; |
34bca508 | 1138 | |
280d71bf DB |
1139 | default: |
1140 | break; | |
1141 | } | |
1142 | return 1; | |
1143 | } | |
1144 | #endif | |
1145 | ||
0909233e | 1146 | static void |
5a0ade8b | 1147 | report_op_error (symbolS *symp, symbolS *left, operatorT op, symbolS *right) |
0909233e | 1148 | { |
3b4dbbbf | 1149 | const char *file; |
0909233e | 1150 | unsigned int line; |
5a0ade8b AM |
1151 | segT seg_left = left ? S_GET_SEGMENT (left) : 0; |
1152 | segT seg_right = S_GET_SEGMENT (right); | |
1153 | const char *opname; | |
1154 | ||
1155 | switch (op) | |
1156 | { | |
1157 | default: | |
1158 | abort (); | |
1159 | return; | |
1160 | ||
1161 | case O_uminus: opname = "-"; break; | |
1162 | case O_bit_not: opname = "~"; break; | |
1163 | case O_logical_not: opname = "!"; break; | |
1164 | case O_multiply: opname = "*"; break; | |
1165 | case O_divide: opname = "/"; break; | |
1166 | case O_modulus: opname = "%"; break; | |
1167 | case O_left_shift: opname = "<<"; break; | |
1168 | case O_right_shift: opname = ">>"; break; | |
1169 | case O_bit_inclusive_or: opname = "|"; break; | |
1170 | case O_bit_or_not: opname = "|~"; break; | |
1171 | case O_bit_exclusive_or: opname = "^"; break; | |
1172 | case O_bit_and: opname = "&"; break; | |
1173 | case O_add: opname = "+"; break; | |
1174 | case O_subtract: opname = "-"; break; | |
1175 | case O_eq: opname = "=="; break; | |
1176 | case O_ne: opname = "!="; break; | |
1177 | case O_lt: opname = "<"; break; | |
1178 | case O_le: opname = "<="; break; | |
1179 | case O_ge: opname = ">="; break; | |
1180 | case O_gt: opname = ">"; break; | |
1181 | case O_logical_and: opname = "&&"; break; | |
1182 | case O_logical_or: opname = "||"; break; | |
1183 | } | |
1d3b2b27 | 1184 | |
0909233e AM |
1185 | if (expr_symbol_where (symp, &file, &line)) |
1186 | { | |
5a0ade8b | 1187 | if (left) |
0909233e | 1188 | as_bad_where (file, line, |
5a0ade8b AM |
1189 | _("invalid operands (%s and %s sections) for `%s'"), |
1190 | seg_left->name, seg_right->name, opname); | |
1191 | else | |
0909233e | 1192 | as_bad_where (file, line, |
5a0ade8b AM |
1193 | _("invalid operand (%s section) for `%s'"), |
1194 | seg_right->name, opname); | |
0909233e AM |
1195 | } |
1196 | else | |
1197 | { | |
5a0ade8b AM |
1198 | const char *sname = S_GET_NAME (symp); |
1199 | ||
1200 | if (left) | |
1201 | as_bad (_("invalid operands (%s and %s sections) for `%s' when setting `%s'"), | |
1202 | seg_left->name, seg_right->name, opname, sname); | |
1203 | else | |
1204 | as_bad (_("invalid operand (%s section) for `%s' when setting `%s'"), | |
1205 | seg_right->name, opname, sname); | |
0909233e AM |
1206 | } |
1207 | } | |
1208 | ||
252b5132 RH |
1209 | /* Resolve the value of a symbol. This is called during the final |
1210 | pass over the symbol table to resolve any symbols with complex | |
1211 | values. */ | |
1212 | ||
1213 | valueT | |
74937d39 | 1214 | resolve_symbol_value (symbolS *symp) |
252b5132 RH |
1215 | { |
1216 | int resolved; | |
1903f138 | 1217 | valueT final_val; |
252b5132 RH |
1218 | segT final_seg; |
1219 | ||
5014c2d2 | 1220 | if (symp->flags.local_symbol) |
49309057 ILT |
1221 | { |
1222 | struct local_symbol *locsym = (struct local_symbol *) symp; | |
1223 | ||
3c0d9d71 AM |
1224 | final_val = locsym->value; |
1225 | if (locsym->flags.resolved) | |
bd780143 | 1226 | return final_val; |
49309057 | 1227 | |
61826503 CE |
1228 | /* Symbols whose section has SEC_ELF_OCTETS set, |
1229 | resolve to octets instead of target bytes. */ | |
3c0d9d71 | 1230 | if (locsym->section->flags & SEC_OCTETS) |
5014c2d2 | 1231 | final_val += locsym->frag->fr_address; |
61826503 | 1232 | else |
5014c2d2 | 1233 | final_val += locsym->frag->fr_address / OCTETS_PER_BYTE; |
49309057 | 1234 | |
6386f3a7 | 1235 | if (finalize_syms) |
49309057 | 1236 | { |
3c0d9d71 AM |
1237 | locsym->value = final_val; |
1238 | locsym->flags.resolved = 1; | |
49309057 ILT |
1239 | } |
1240 | ||
1241 | return final_val; | |
1242 | } | |
1243 | ||
3c0d9d71 | 1244 | if (symp->flags.resolved) |
252b5132 | 1245 | { |
1903f138 | 1246 | final_val = 0; |
5014c2d2 | 1247 | while (symp->x->value.X_op == O_symbol) |
1903f138 | 1248 | { |
5014c2d2 AM |
1249 | final_val += symp->x->value.X_add_number; |
1250 | symp = symp->x->value.X_add_symbol; | |
1251 | if (symp->flags.local_symbol) | |
2a50b401 AM |
1252 | { |
1253 | struct local_symbol *locsym = (struct local_symbol *) symp; | |
3c0d9d71 | 1254 | final_val += locsym->value; |
2a50b401 AM |
1255 | return final_val; |
1256 | } | |
3c0d9d71 | 1257 | if (!symp->flags.resolved) |
2a50b401 | 1258 | return 0; |
1903f138 | 1259 | } |
5014c2d2 AM |
1260 | if (symp->x->value.X_op == O_constant) |
1261 | final_val += symp->x->value.X_add_number; | |
252b5132 | 1262 | else |
1903f138 AM |
1263 | final_val = 0; |
1264 | return final_val; | |
252b5132 RH |
1265 | } |
1266 | ||
1267 | resolved = 0; | |
1268 | final_seg = S_GET_SEGMENT (symp); | |
1269 | ||
3c0d9d71 | 1270 | if (symp->flags.resolving) |
252b5132 | 1271 | { |
6386f3a7 | 1272 | if (finalize_syms) |
0e389e77 | 1273 | as_bad (_("symbol definition loop encountered at `%s'"), |
7c743825 | 1274 | S_GET_NAME (symp)); |
252b5132 RH |
1275 | final_val = 0; |
1276 | resolved = 1; | |
1277 | } | |
280d71bf DB |
1278 | #ifdef OBJ_COMPLEX_RELC |
1279 | else if (final_seg == expr_section | |
1280 | && use_complex_relocs_for (symp)) | |
1281 | { | |
1282 | symbolS * relc_symbol = NULL; | |
1283 | char * relc_symbol_name = NULL; | |
1284 | ||
5014c2d2 | 1285 | relc_symbol_name = symbol_relc_make_expr (& symp->x->value); |
280d71bf DB |
1286 | |
1287 | /* For debugging, print out conversion input & output. */ | |
1288 | #ifdef DEBUG_SYMS | |
5014c2d2 | 1289 | print_expr (& symp->x->value); |
280d71bf DB |
1290 | if (relc_symbol_name) |
1291 | fprintf (stderr, "-> relc symbol: %s\n", relc_symbol_name); | |
1292 | #endif | |
1293 | ||
1294 | if (relc_symbol_name != NULL) | |
1295 | relc_symbol = symbol_new (relc_symbol_name, undefined_section, | |
e01e1cee | 1296 | &zero_address_frag, 0); |
280d71bf DB |
1297 | |
1298 | if (relc_symbol == NULL) | |
1299 | { | |
1300 | as_bad (_("cannot convert expression symbol %s to complex relocation"), | |
1301 | S_GET_NAME (symp)); | |
1302 | resolved = 0; | |
1303 | } | |
1304 | else | |
1305 | { | |
1306 | symbol_table_insert (relc_symbol); | |
1307 | ||
3c0d9d71 | 1308 | /* S_CLEAR_EXTERNAL (relc_symbol); */ |
280d71bf DB |
1309 | if (symp->bsym->flags & BSF_SRELC) |
1310 | relc_symbol->bsym->flags |= BSF_SRELC; | |
1311 | else | |
34bca508 | 1312 | relc_symbol->bsym->flags |= BSF_RELC; |
280d71bf DB |
1313 | /* symp->bsym->flags |= BSF_RELC; */ |
1314 | copy_symbol_attributes (symp, relc_symbol); | |
5014c2d2 AM |
1315 | symp->x->value.X_op = O_symbol; |
1316 | symp->x->value.X_add_symbol = relc_symbol; | |
1317 | symp->x->value.X_add_number = 0; | |
280d71bf DB |
1318 | resolved = 1; |
1319 | } | |
1320 | ||
1903f138 | 1321 | final_val = 0; |
280d71bf DB |
1322 | final_seg = undefined_section; |
1323 | goto exit_dont_set_value; | |
1324 | } | |
1325 | #endif | |
252b5132 RH |
1326 | else |
1327 | { | |
1328 | symbolS *add_symbol, *op_symbol; | |
1329 | offsetT left, right; | |
1330 | segT seg_left, seg_right; | |
1331 | operatorT op; | |
2d034539 | 1332 | int move_seg_ok; |
252b5132 | 1333 | |
3c0d9d71 | 1334 | symp->flags.resolving = 1; |
252b5132 RH |
1335 | |
1336 | /* Help out with CSE. */ | |
5014c2d2 AM |
1337 | add_symbol = symp->x->value.X_add_symbol; |
1338 | op_symbol = symp->x->value.X_op_symbol; | |
1339 | final_val = symp->x->value.X_add_number; | |
1340 | op = symp->x->value.X_op; | |
252b5132 RH |
1341 | |
1342 | switch (op) | |
1343 | { | |
1344 | default: | |
1345 | BAD_CASE (op); | |
1346 | break; | |
1347 | ||
1348 | case O_absent: | |
1349 | final_val = 0; | |
1350 | /* Fall through. */ | |
1351 | ||
1352 | case O_constant: | |
61826503 CE |
1353 | /* Symbols whose section has SEC_ELF_OCTETS set, |
1354 | resolve to octets instead of target bytes. */ | |
1355 | if (symp->bsym->section->flags & SEC_OCTETS) | |
3c0d9d71 | 1356 | final_val += symp->frag->fr_address; |
61826503 | 1357 | else |
3c0d9d71 | 1358 | final_val += symp->frag->fr_address / OCTETS_PER_BYTE; |
252b5132 RH |
1359 | if (final_seg == expr_section) |
1360 | final_seg = absolute_section; | |
db557034 AM |
1361 | /* Fall through. */ |
1362 | ||
1363 | case O_register: | |
252b5132 RH |
1364 | resolved = 1; |
1365 | break; | |
1366 | ||
1367 | case O_symbol: | |
1368 | case O_symbol_rva: | |
6386f3a7 | 1369 | left = resolve_symbol_value (add_symbol); |
e0890092 AM |
1370 | seg_left = S_GET_SEGMENT (add_symbol); |
1371 | if (finalize_syms) | |
5014c2d2 | 1372 | symp->x->value.X_op_symbol = NULL; |
252b5132 | 1373 | |
e0890092 | 1374 | do_symbol: |
06e77878 AO |
1375 | if (S_IS_WEAKREFR (symp)) |
1376 | { | |
9c2799c2 | 1377 | gas_assert (final_val == 0); |
06e77878 AO |
1378 | if (S_IS_WEAKREFR (add_symbol)) |
1379 | { | |
5014c2d2 AM |
1380 | gas_assert (add_symbol->x->value.X_op == O_symbol |
1381 | && add_symbol->x->value.X_add_number == 0); | |
1382 | add_symbol = add_symbol->x->value.X_add_symbol; | |
9c2799c2 | 1383 | gas_assert (! S_IS_WEAKREFR (add_symbol)); |
5014c2d2 | 1384 | symp->x->value.X_add_symbol = add_symbol; |
06e77878 AO |
1385 | } |
1386 | } | |
1387 | ||
3c0d9d71 | 1388 | if (symp->flags.mri_common) |
252b5132 RH |
1389 | { |
1390 | /* This is a symbol inside an MRI common section. The | |
e0890092 AM |
1391 | relocation routines are going to handle it specially. |
1392 | Don't change the value. */ | |
49309057 | 1393 | resolved = symbol_resolved_p (add_symbol); |
252b5132 RH |
1394 | break; |
1395 | } | |
1396 | ||
2a50b401 AM |
1397 | /* Don't leave symbol loops. */ |
1398 | if (finalize_syms | |
5014c2d2 | 1399 | && !add_symbol->flags.local_symbol |
3c0d9d71 | 1400 | && add_symbol->flags.resolving) |
2a50b401 AM |
1401 | break; |
1402 | ||
cd026728 CC |
1403 | if (finalize_syms && final_val == 0 |
1404 | #ifdef OBJ_XCOFF | |
1405 | /* Avoid changing symp's "within" when dealing with | |
1406 | AIX debug symbols. For some storage classes, "within" | |
1407 | have a special meaning. | |
1408 | C_DWARF should behave like on Linux, thus this check | |
1409 | isn't done to be closer. */ | |
1410 | && ((symbol_get_bfdsym (symp)->flags & BSF_DEBUGGING) == 0 | |
1411 | || (S_GET_STORAGE_CLASS (symp) == C_DWARF)) | |
1412 | #endif | |
1413 | ) | |
49309057 | 1414 | { |
5014c2d2 AM |
1415 | if (add_symbol->flags.local_symbol) |
1416 | add_symbol = local_symbol_convert (add_symbol); | |
49309057 ILT |
1417 | copy_symbol_attributes (symp, add_symbol); |
1418 | } | |
252b5132 | 1419 | |
e0890092 AM |
1420 | /* If we have equated this symbol to an undefined or common |
1421 | symbol, keep X_op set to O_symbol, and don't change | |
1422 | X_add_number. This permits the routine which writes out | |
1423 | relocation to detect this case, and convert the | |
1424 | relocation to be against the symbol to which this symbol | |
1425 | is equated. */ | |
1903f138 AM |
1426 | if (seg_left == undefined_section |
1427 | || bfd_is_com_section (seg_left) | |
7be1c489 | 1428 | #if defined (OBJ_COFF) && defined (TE_PE) |
977cdf5a NC |
1429 | || S_IS_WEAK (add_symbol) |
1430 | #endif | |
1903f138 AM |
1431 | || (finalize_syms |
1432 | && ((final_seg == expr_section | |
1433 | && seg_left != expr_section | |
1434 | && seg_left != absolute_section) | |
1435 | || symbol_shadow_p (symp)))) | |
252b5132 | 1436 | { |
6386f3a7 | 1437 | if (finalize_syms) |
252b5132 | 1438 | { |
5014c2d2 AM |
1439 | symp->x->value.X_op = O_symbol; |
1440 | symp->x->value.X_add_symbol = add_symbol; | |
1441 | symp->x->value.X_add_number = final_val; | |
e0890092 | 1442 | /* Use X_op_symbol as a flag. */ |
5014c2d2 | 1443 | symp->x->value.X_op_symbol = add_symbol; |
252b5132 | 1444 | } |
5a0ade8b | 1445 | final_seg = seg_left; |
3c0d9d71 | 1446 | final_val += symp->frag->fr_address + left; |
e0890092 | 1447 | resolved = symbol_resolved_p (add_symbol); |
3c0d9d71 | 1448 | symp->flags.resolving = 0; |
e0890092 AM |
1449 | goto exit_dont_set_value; |
1450 | } | |
252b5132 RH |
1451 | else |
1452 | { | |
3c0d9d71 | 1453 | final_val += symp->frag->fr_address + left; |
252b5132 | 1454 | if (final_seg == expr_section || final_seg == undefined_section) |
e0890092 | 1455 | final_seg = seg_left; |
252b5132 RH |
1456 | } |
1457 | ||
49309057 | 1458 | resolved = symbol_resolved_p (add_symbol); |
06e77878 | 1459 | if (S_IS_WEAKREFR (symp)) |
22987cec | 1460 | { |
3c0d9d71 | 1461 | symp->flags.resolving = 0; |
22987cec AM |
1462 | goto exit_dont_set_value; |
1463 | } | |
252b5132 RH |
1464 | break; |
1465 | ||
1466 | case O_uminus: | |
1467 | case O_bit_not: | |
1468 | case O_logical_not: | |
6386f3a7 | 1469 | left = resolve_symbol_value (add_symbol); |
784b640d | 1470 | seg_left = S_GET_SEGMENT (add_symbol); |
252b5132 | 1471 | |
0909233e | 1472 | /* By reducing these to the relevant dyadic operator, we get |
3c0d9d71 AM |
1473 | !S -> S == 0 permitted on anything, |
1474 | -S -> 0 - S only permitted on absolute | |
1475 | ~S -> S ^ ~0 only permitted on absolute */ | |
0909233e AM |
1476 | if (op != O_logical_not && seg_left != absolute_section |
1477 | && finalize_syms) | |
5a0ade8b | 1478 | report_op_error (symp, NULL, op, add_symbol); |
1d3b2b27 | 1479 | |
0909233e AM |
1480 | if (final_seg == expr_section || final_seg == undefined_section) |
1481 | final_seg = absolute_section; | |
1d3b2b27 | 1482 | |
252b5132 RH |
1483 | if (op == O_uminus) |
1484 | left = -left; | |
1485 | else if (op == O_logical_not) | |
1486 | left = !left; | |
1487 | else | |
1488 | left = ~left; | |
1489 | ||
3c0d9d71 | 1490 | final_val += left + symp->frag->fr_address; |
252b5132 | 1491 | |
49309057 | 1492 | resolved = symbol_resolved_p (add_symbol); |
252b5132 RH |
1493 | break; |
1494 | ||
1495 | case O_multiply: | |
1496 | case O_divide: | |
1497 | case O_modulus: | |
1498 | case O_left_shift: | |
1499 | case O_right_shift: | |
1500 | case O_bit_inclusive_or: | |
1501 | case O_bit_or_not: | |
1502 | case O_bit_exclusive_or: | |
1503 | case O_bit_and: | |
1504 | case O_add: | |
1505 | case O_subtract: | |
1506 | case O_eq: | |
1507 | case O_ne: | |
1508 | case O_lt: | |
1509 | case O_le: | |
1510 | case O_ge: | |
1511 | case O_gt: | |
1512 | case O_logical_and: | |
1513 | case O_logical_or: | |
6386f3a7 AM |
1514 | left = resolve_symbol_value (add_symbol); |
1515 | right = resolve_symbol_value (op_symbol); | |
252b5132 RH |
1516 | seg_left = S_GET_SEGMENT (add_symbol); |
1517 | seg_right = S_GET_SEGMENT (op_symbol); | |
1518 | ||
1519 | /* Simplify addition or subtraction of a constant by folding the | |
1520 | constant into X_add_number. */ | |
e0890092 | 1521 | if (op == O_add) |
252b5132 RH |
1522 | { |
1523 | if (seg_right == absolute_section) | |
1524 | { | |
e0890092 | 1525 | final_val += right; |
252b5132 RH |
1526 | goto do_symbol; |
1527 | } | |
e0890092 | 1528 | else if (seg_left == absolute_section) |
252b5132 | 1529 | { |
252b5132 RH |
1530 | final_val += left; |
1531 | add_symbol = op_symbol; | |
1532 | left = right; | |
e0890092 AM |
1533 | seg_left = seg_right; |
1534 | goto do_symbol; | |
1535 | } | |
1536 | } | |
1537 | else if (op == O_subtract) | |
1538 | { | |
1539 | if (seg_right == absolute_section) | |
1540 | { | |
1541 | final_val -= right; | |
252b5132 RH |
1542 | goto do_symbol; |
1543 | } | |
1544 | } | |
1545 | ||
2d034539 | 1546 | move_seg_ok = 1; |
e0890092 AM |
1547 | /* Equality and non-equality tests are permitted on anything. |
1548 | Subtraction, and other comparison operators are permitted if | |
1549 | both operands are in the same section. Otherwise, both | |
1550 | operands must be absolute. We already handled the case of | |
1551 | addition or subtraction of a constant above. This will | |
1552 | probably need to be changed for an object file format which | |
fdef3943 | 1553 | supports arbitrary expressions. */ |
2d034539 | 1554 | if (!(seg_left == absolute_section |
5a0ade8b | 1555 | && seg_right == absolute_section) |
0909233e AM |
1556 | && !(op == O_eq || op == O_ne) |
1557 | && !((op == O_subtract | |
1558 | || op == O_lt || op == O_le || op == O_ge || op == O_gt) | |
1559 | && seg_left == seg_right | |
1560 | && (seg_left != undefined_section | |
1561 | || add_symbol == op_symbol))) | |
2d034539 NC |
1562 | { |
1563 | /* Don't emit messages unless we're finalizing the symbol value, | |
1564 | otherwise we may get the same message multiple times. */ | |
1565 | if (finalize_syms) | |
5a0ade8b | 1566 | report_op_error (symp, add_symbol, op, op_symbol); |
2d034539 NC |
1567 | /* However do not move the symbol into the absolute section |
1568 | if it cannot currently be resolved - this would confuse | |
1569 | other parts of the assembler into believing that the | |
1570 | expression had been evaluated to zero. */ | |
1571 | else | |
1572 | move_seg_ok = 0; | |
1573 | } | |
1d3b2b27 | 1574 | |
2d034539 NC |
1575 | if (move_seg_ok |
1576 | && (final_seg == expr_section || final_seg == undefined_section)) | |
0909233e | 1577 | final_seg = absolute_section; |
252b5132 RH |
1578 | |
1579 | /* Check for division by zero. */ | |
1580 | if ((op == O_divide || op == O_modulus) && right == 0) | |
1581 | { | |
1582 | /* If seg_right is not absolute_section, then we've | |
e0890092 | 1583 | already issued a warning about using a bad symbol. */ |
6386f3a7 | 1584 | if (seg_right == absolute_section && finalize_syms) |
252b5132 | 1585 | { |
3b4dbbbf | 1586 | const char *file; |
252b5132 RH |
1587 | unsigned int line; |
1588 | ||
1589 | if (expr_symbol_where (symp, &file, &line)) | |
1590 | as_bad_where (file, line, _("division by zero")); | |
1591 | else | |
0e389e77 | 1592 | as_bad (_("division by zero when setting `%s'"), |
252b5132 RH |
1593 | S_GET_NAME (symp)); |
1594 | } | |
1595 | ||
1596 | right = 1; | |
1597 | } | |
d8d6da13 AM |
1598 | if ((op == O_left_shift || op == O_right_shift) |
1599 | && (valueT) right >= sizeof (valueT) * CHAR_BIT) | |
1600 | { | |
1601 | as_warn_value_out_of_range (_("shift count"), right, 0, | |
1602 | sizeof (valueT) * CHAR_BIT - 1, | |
1603 | NULL, 0); | |
1604 | left = right = 0; | |
1605 | } | |
252b5132 | 1606 | |
5014c2d2 | 1607 | switch (symp->x->value.X_op) |
252b5132 RH |
1608 | { |
1609 | case O_multiply: left *= right; break; | |
1610 | case O_divide: left /= right; break; | |
1611 | case O_modulus: left %= right; break; | |
d8d6da13 AM |
1612 | case O_left_shift: |
1613 | left = (valueT) left << (valueT) right; break; | |
1614 | case O_right_shift: | |
1615 | left = (valueT) left >> (valueT) right; break; | |
252b5132 RH |
1616 | case O_bit_inclusive_or: left |= right; break; |
1617 | case O_bit_or_not: left |= ~right; break; | |
1618 | case O_bit_exclusive_or: left ^= right; break; | |
1619 | case O_bit_and: left &= right; break; | |
1620 | case O_add: left += right; break; | |
1621 | case O_subtract: left -= right; break; | |
e0890092 AM |
1622 | case O_eq: |
1623 | case O_ne: | |
1624 | left = (left == right && seg_left == seg_right | |
1625 | && (seg_left != undefined_section | |
1626 | || add_symbol == op_symbol) | |
1627 | ? ~ (offsetT) 0 : 0); | |
5014c2d2 | 1628 | if (symp->x->value.X_op == O_ne) |
e0890092 AM |
1629 | left = ~left; |
1630 | break; | |
252b5132 RH |
1631 | case O_lt: left = left < right ? ~ (offsetT) 0 : 0; break; |
1632 | case O_le: left = left <= right ? ~ (offsetT) 0 : 0; break; | |
1633 | case O_ge: left = left >= right ? ~ (offsetT) 0 : 0; break; | |
1634 | case O_gt: left = left > right ? ~ (offsetT) 0 : 0; break; | |
1635 | case O_logical_and: left = left && right; break; | |
1636 | case O_logical_or: left = left || right; break; | |
6d6ad65b NC |
1637 | |
1638 | case O_illegal: | |
1639 | case O_absent: | |
1640 | case O_constant: | |
1641 | /* See PR 20895 for a reproducer. */ | |
1642 | as_bad (_("Invalid operation on symbol")); | |
1643 | goto exit_dont_set_value; | |
1644 | ||
1645 | default: | |
1646 | abort (); | |
252b5132 RH |
1647 | } |
1648 | ||
3c0d9d71 | 1649 | final_val += symp->frag->fr_address + left; |
252b5132 | 1650 | if (final_seg == expr_section || final_seg == undefined_section) |
784b640d AM |
1651 | { |
1652 | if (seg_left == undefined_section | |
1653 | || seg_right == undefined_section) | |
1654 | final_seg = undefined_section; | |
1655 | else if (seg_left == absolute_section) | |
1656 | final_seg = seg_right; | |
1657 | else | |
1658 | final_seg = seg_left; | |
1659 | } | |
49309057 ILT |
1660 | resolved = (symbol_resolved_p (add_symbol) |
1661 | && symbol_resolved_p (op_symbol)); | |
7c743825 | 1662 | break; |
252b5132 | 1663 | |
252b5132 RH |
1664 | case O_big: |
1665 | case O_illegal: | |
1666 | /* Give an error (below) if not in expr_section. We don't | |
1667 | want to worry about expr_section symbols, because they | |
1668 | are fictional (they are created as part of expression | |
1669 | resolution), and any problems may not actually mean | |
1670 | anything. */ | |
1671 | break; | |
1672 | } | |
1673 | ||
3c0d9d71 | 1674 | symp->flags.resolving = 0; |
252b5132 RH |
1675 | } |
1676 | ||
6386f3a7 | 1677 | if (finalize_syms) |
05bdb37e | 1678 | S_SET_VALUE (symp, final_val); |
252b5132 | 1679 | |
dc1e8a47 | 1680 | exit_dont_set_value: |
05bdb37e AM |
1681 | /* Always set the segment, even if not finalizing the value. |
1682 | The segment is used to determine whether a symbol is defined. */ | |
05bdb37e | 1683 | S_SET_SEGMENT (symp, final_seg); |
252b5132 | 1684 | |
252b5132 | 1685 | /* Don't worry if we can't resolve an expr_section symbol. */ |
6386f3a7 | 1686 | if (finalize_syms) |
252b5132 RH |
1687 | { |
1688 | if (resolved) | |
3c0d9d71 | 1689 | symp->flags.resolved = 1; |
252b5132 RH |
1690 | else if (S_GET_SEGMENT (symp) != expr_section) |
1691 | { | |
0e389e77 | 1692 | as_bad (_("can't resolve value for symbol `%s'"), |
7c743825 | 1693 | S_GET_NAME (symp)); |
3c0d9d71 | 1694 | symp->flags.resolved = 1; |
252b5132 RH |
1695 | } |
1696 | } | |
1697 | ||
1698 | return final_val; | |
1699 | } | |
1700 | ||
49309057 ILT |
1701 | /* A static function passed to hash_traverse. */ |
1702 | ||
d3b740ca ML |
1703 | static int |
1704 | resolve_local_symbol (void **slot, void *arg ATTRIBUTE_UNUSED) | |
49309057 | 1705 | { |
d3b740ca | 1706 | symbol_entry_t *entry = *((symbol_entry_t **) slot); |
5014c2d2 AM |
1707 | if (entry->sy.flags.local_symbol) |
1708 | resolve_symbol_value (&entry->sy); | |
d3b740ca ML |
1709 | |
1710 | return 1; | |
49309057 ILT |
1711 | } |
1712 | ||
49309057 ILT |
1713 | /* Resolve all local symbols. */ |
1714 | ||
1715 | void | |
74937d39 | 1716 | resolve_local_symbol_values (void) |
49309057 | 1717 | { |
5014c2d2 | 1718 | htab_traverse (sy_hash, resolve_local_symbol, NULL); |
49309057 ILT |
1719 | } |
1720 | ||
9497f5ac NC |
1721 | /* Obtain the current value of a symbol without changing any |
1722 | sub-expressions used. */ | |
1723 | ||
1724 | int | |
2e1e12b1 | 1725 | snapshot_symbol (symbolS **symbolPP, valueT *valueP, segT *segP, fragS **fragPP) |
9497f5ac | 1726 | { |
2e1e12b1 JB |
1727 | symbolS *symbolP = *symbolPP; |
1728 | ||
5014c2d2 | 1729 | if (symbolP->flags.local_symbol) |
9497f5ac NC |
1730 | { |
1731 | struct local_symbol *locsym = (struct local_symbol *) symbolP; | |
1732 | ||
3c0d9d71 AM |
1733 | *valueP = locsym->value; |
1734 | *segP = locsym->section; | |
5014c2d2 | 1735 | *fragPP = locsym->frag; |
9497f5ac NC |
1736 | } |
1737 | else | |
1738 | { | |
5014c2d2 | 1739 | expressionS exp = symbolP->x->value; |
9497f5ac | 1740 | |
3c0d9d71 | 1741 | if (!symbolP->flags.resolved && exp.X_op != O_illegal) |
9497f5ac NC |
1742 | { |
1743 | int resolved; | |
1744 | ||
3c0d9d71 | 1745 | if (symbolP->flags.resolving) |
9497f5ac | 1746 | return 0; |
3c0d9d71 | 1747 | symbolP->flags.resolving = 1; |
91d6fa6a | 1748 | resolved = resolve_expression (&exp); |
3c0d9d71 | 1749 | symbolP->flags.resolving = 0; |
9497f5ac NC |
1750 | if (!resolved) |
1751 | return 0; | |
1752 | ||
91d6fa6a | 1753 | switch (exp.X_op) |
9497f5ac NC |
1754 | { |
1755 | case O_constant: | |
1756 | case O_register: | |
2e1e12b1 | 1757 | if (!symbol_equated_p (symbolP)) |
9497f5ac | 1758 | break; |
2b0f3761 | 1759 | /* Fallthru. */ |
9497f5ac NC |
1760 | case O_symbol: |
1761 | case O_symbol_rva: | |
91d6fa6a | 1762 | symbolP = exp.X_add_symbol; |
9497f5ac NC |
1763 | break; |
1764 | default: | |
1765 | return 0; | |
1766 | } | |
1767 | } | |
1768 | ||
d96eea71 | 1769 | *symbolPP = symbolP; |
e78bb25c NC |
1770 | |
1771 | /* A bogus input file can result in resolve_expression() | |
1772 | generating a local symbol, so we have to check again. */ | |
5014c2d2 | 1773 | if (symbolP->flags.local_symbol) |
e78bb25c NC |
1774 | { |
1775 | struct local_symbol *locsym = (struct local_symbol *) symbolP; | |
1776 | ||
3c0d9d71 AM |
1777 | *valueP = locsym->value; |
1778 | *segP = locsym->section; | |
5014c2d2 | 1779 | *fragPP = locsym->frag; |
e78bb25c NC |
1780 | } |
1781 | else | |
1782 | { | |
1783 | *valueP = exp.X_add_number; | |
1784 | *segP = symbolP->bsym->section; | |
3c0d9d71 | 1785 | *fragPP = symbolP->frag; |
e78bb25c | 1786 | } |
9497f5ac NC |
1787 | |
1788 | if (*segP == expr_section) | |
91d6fa6a | 1789 | switch (exp.X_op) |
9497f5ac NC |
1790 | { |
1791 | case O_constant: *segP = absolute_section; break; | |
1792 | case O_register: *segP = reg_section; break; | |
1793 | default: break; | |
1794 | } | |
1795 | } | |
1796 | ||
1797 | return 1; | |
1798 | } | |
1799 | ||
252b5132 RH |
1800 | /* Dollar labels look like a number followed by a dollar sign. Eg, "42$". |
1801 | They are *really* local. That is, they go out of scope whenever we see a | |
1802 | label that isn't local. Also, like fb labels, there can be multiple | |
1803 | instances of a dollar label. Therefor, we name encode each instance with | |
1804 | the instance number, keep a list of defined symbols separate from the real | |
1805 | symbol table, and we treat these buggers as a sparse array. */ | |
1806 | ||
1807 | static long *dollar_labels; | |
1808 | static long *dollar_label_instances; | |
1809 | static char *dollar_label_defines; | |
30b940a0 AM |
1810 | static size_t dollar_label_count; |
1811 | static size_t dollar_label_max; | |
252b5132 | 1812 | |
7c743825 | 1813 | int |
74937d39 | 1814 | dollar_label_defined (long label) |
252b5132 RH |
1815 | { |
1816 | long *i; | |
1817 | ||
1818 | know ((dollar_labels != NULL) || (dollar_label_count == 0)); | |
1819 | ||
1820 | for (i = dollar_labels; i < dollar_labels + dollar_label_count; ++i) | |
1821 | if (*i == label) | |
1822 | return dollar_label_defines[i - dollar_labels]; | |
1823 | ||
7c743825 | 1824 | /* If we get here, label isn't defined. */ |
252b5132 | 1825 | return 0; |
7c743825 | 1826 | } |
252b5132 RH |
1827 | |
1828 | static long | |
74937d39 | 1829 | dollar_label_instance (long label) |
252b5132 RH |
1830 | { |
1831 | long *i; | |
1832 | ||
1833 | know ((dollar_labels != NULL) || (dollar_label_count == 0)); | |
1834 | ||
1835 | for (i = dollar_labels; i < dollar_labels + dollar_label_count; ++i) | |
1836 | if (*i == label) | |
1837 | return (dollar_label_instances[i - dollar_labels]); | |
1838 | ||
7c743825 KH |
1839 | /* If we get here, we haven't seen the label before. |
1840 | Therefore its instance count is zero. */ | |
252b5132 RH |
1841 | return 0; |
1842 | } | |
1843 | ||
7c743825 | 1844 | void |
74937d39 | 1845 | dollar_label_clear (void) |
252b5132 | 1846 | { |
30b940a0 AM |
1847 | if (dollar_label_count) |
1848 | memset (dollar_label_defines, '\0', dollar_label_count); | |
252b5132 RH |
1849 | } |
1850 | ||
1851 | #define DOLLAR_LABEL_BUMP_BY 10 | |
1852 | ||
7c743825 | 1853 | void |
74937d39 | 1854 | define_dollar_label (long label) |
252b5132 RH |
1855 | { |
1856 | long *i; | |
1857 | ||
1858 | for (i = dollar_labels; i < dollar_labels + dollar_label_count; ++i) | |
1859 | if (*i == label) | |
1860 | { | |
1861 | ++dollar_label_instances[i - dollar_labels]; | |
1862 | dollar_label_defines[i - dollar_labels] = 1; | |
1863 | return; | |
1864 | } | |
1865 | ||
7c743825 | 1866 | /* If we get to here, we don't have label listed yet. */ |
252b5132 RH |
1867 | |
1868 | if (dollar_labels == NULL) | |
1869 | { | |
325801bd TS |
1870 | dollar_labels = XNEWVEC (long, DOLLAR_LABEL_BUMP_BY); |
1871 | dollar_label_instances = XNEWVEC (long, DOLLAR_LABEL_BUMP_BY); | |
add39d23 | 1872 | dollar_label_defines = XNEWVEC (char, DOLLAR_LABEL_BUMP_BY); |
252b5132 RH |
1873 | dollar_label_max = DOLLAR_LABEL_BUMP_BY; |
1874 | dollar_label_count = 0; | |
1875 | } | |
1876 | else if (dollar_label_count == dollar_label_max) | |
1877 | { | |
1878 | dollar_label_max += DOLLAR_LABEL_BUMP_BY; | |
325801bd TS |
1879 | dollar_labels = XRESIZEVEC (long, dollar_labels, dollar_label_max); |
1880 | dollar_label_instances = XRESIZEVEC (long, dollar_label_instances, | |
1881 | dollar_label_max); | |
add39d23 TS |
1882 | dollar_label_defines = XRESIZEVEC (char, dollar_label_defines, |
1883 | dollar_label_max); | |
7c743825 | 1884 | } /* if we needed to grow */ |
252b5132 RH |
1885 | |
1886 | dollar_labels[dollar_label_count] = label; | |
1887 | dollar_label_instances[dollar_label_count] = 1; | |
1888 | dollar_label_defines[dollar_label_count] = 1; | |
1889 | ++dollar_label_count; | |
1890 | } | |
1891 | ||
7c743825 KH |
1892 | /* Caller must copy returned name: we re-use the area for the next name. |
1893 | ||
2b0f3761 | 1894 | The mth occurrence of label n: is turned into the symbol "Ln^Am" |
7c743825 KH |
1895 | where n is the label number and m is the instance number. "L" makes |
1896 | it a label discarded unless debugging and "^A"('\1') ensures no | |
1897 | ordinary symbol SHOULD get the same name as a local label | |
1898 | symbol. The first "4:" is "L4^A1" - the m numbers begin at 1. | |
1899 | ||
1900 | fb labels get the same treatment, except that ^B is used in place | |
1901 | of ^A. */ | |
1902 | ||
1903 | char * /* Return local label name. */ | |
ed9e98c2 AM |
1904 | dollar_label_name (long n, /* we just saw "n$:" : n a number. */ |
1905 | int augend /* 0 for current instance, 1 for new instance. */) | |
252b5132 RH |
1906 | { |
1907 | long i; | |
7c743825 | 1908 | /* Returned to caller, then copied. Used for created names ("4f"). */ |
252b5132 | 1909 | static char symbol_name_build[24]; |
ed9e98c2 AM |
1910 | char *p; |
1911 | char *q; | |
7c743825 | 1912 | char symbol_name_temporary[20]; /* Build up a number, BACKWARDS. */ |
252b5132 RH |
1913 | |
1914 | know (n >= 0); | |
1915 | know (augend == 0 || augend == 1); | |
1916 | p = symbol_name_build; | |
f84dd1f0 NC |
1917 | #ifdef LOCAL_LABEL_PREFIX |
1918 | *p++ = LOCAL_LABEL_PREFIX; | |
1919 | #endif | |
252b5132 RH |
1920 | *p++ = 'L'; |
1921 | ||
7c743825 KH |
1922 | /* Next code just does sprintf( {}, "%d", n); */ |
1923 | /* Label number. */ | |
252b5132 RH |
1924 | q = symbol_name_temporary; |
1925 | for (*q++ = 0, i = n; i; ++q) | |
1926 | { | |
1927 | *q = i % 10 + '0'; | |
1928 | i /= 10; | |
1929 | } | |
1930 | while ((*p = *--q) != '\0') | |
1931 | ++p; | |
1932 | ||
aa257fcd | 1933 | *p++ = DOLLAR_LABEL_CHAR; /* ^A */ |
252b5132 | 1934 | |
7c743825 | 1935 | /* Instance number. */ |
252b5132 RH |
1936 | q = symbol_name_temporary; |
1937 | for (*q++ = 0, i = dollar_label_instance (n) + augend; i; ++q) | |
1938 | { | |
1939 | *q = i % 10 + '0'; | |
1940 | i /= 10; | |
1941 | } | |
5bb3703f | 1942 | while ((*p++ = *--q) != '\0'); |
252b5132 | 1943 | |
7c743825 | 1944 | /* The label, as a '\0' ended string, starts at symbol_name_build. */ |
252b5132 RH |
1945 | return symbol_name_build; |
1946 | } | |
1947 | ||
47eebc20 | 1948 | /* Somebody else's idea of local labels. They are made by "n:" where n |
7c743825 KH |
1949 | is any decimal digit. Refer to them with |
1950 | "nb" for previous (backward) n: | |
1951 | or "nf" for next (forward) n:. | |
1952 | ||
1953 | We do a little better and let n be any number, not just a single digit, but | |
1954 | since the other guy's assembler only does ten, we treat the first ten | |
1955 | specially. | |
1956 | ||
1957 | Like someone else's assembler, we have one set of local label counters for | |
1958 | entire assembly, not one set per (sub)segment like in most assemblers. This | |
1959 | implies that one can refer to a label in another segment, and indeed some | |
1960 | crufty compilers have done just that. | |
1961 | ||
1962 | Since there could be a LOT of these things, treat them as a sparse | |
1963 | array. */ | |
252b5132 RH |
1964 | |
1965 | #define FB_LABEL_SPECIAL (10) | |
1966 | ||
1967 | static long fb_low_counter[FB_LABEL_SPECIAL]; | |
1968 | static long *fb_labels; | |
1969 | static long *fb_label_instances; | |
1970 | static long fb_label_count; | |
1971 | static long fb_label_max; | |
1972 | ||
7c743825 | 1973 | /* This must be more than FB_LABEL_SPECIAL. */ |
252b5132 RH |
1974 | #define FB_LABEL_BUMP_BY (FB_LABEL_SPECIAL + 6) |
1975 | ||
7c743825 | 1976 | static void |
74937d39 | 1977 | fb_label_init (void) |
252b5132 RH |
1978 | { |
1979 | memset ((void *) fb_low_counter, '\0', sizeof (fb_low_counter)); | |
7c743825 | 1980 | } |
252b5132 | 1981 | |
7c743825 KH |
1982 | /* Add one to the instance number of this fb label. */ |
1983 | ||
1984 | void | |
74937d39 | 1985 | fb_label_instance_inc (long label) |
252b5132 RH |
1986 | { |
1987 | long *i; | |
1988 | ||
b4e6cb80 | 1989 | if ((unsigned long) label < FB_LABEL_SPECIAL) |
252b5132 RH |
1990 | { |
1991 | ++fb_low_counter[label]; | |
1992 | return; | |
1993 | } | |
1994 | ||
1995 | if (fb_labels != NULL) | |
1996 | { | |
1997 | for (i = fb_labels + FB_LABEL_SPECIAL; | |
1998 | i < fb_labels + fb_label_count; ++i) | |
1999 | { | |
2000 | if (*i == label) | |
2001 | { | |
2002 | ++fb_label_instances[i - fb_labels]; | |
2003 | return; | |
7c743825 KH |
2004 | } /* if we find it */ |
2005 | } /* for each existing label */ | |
252b5132 RH |
2006 | } |
2007 | ||
7c743825 | 2008 | /* If we get to here, we don't have label listed yet. */ |
252b5132 RH |
2009 | |
2010 | if (fb_labels == NULL) | |
2011 | { | |
325801bd TS |
2012 | fb_labels = XNEWVEC (long, FB_LABEL_BUMP_BY); |
2013 | fb_label_instances = XNEWVEC (long, FB_LABEL_BUMP_BY); | |
252b5132 RH |
2014 | fb_label_max = FB_LABEL_BUMP_BY; |
2015 | fb_label_count = FB_LABEL_SPECIAL; | |
2016 | ||
2017 | } | |
2018 | else if (fb_label_count == fb_label_max) | |
2019 | { | |
2020 | fb_label_max += FB_LABEL_BUMP_BY; | |
325801bd TS |
2021 | fb_labels = XRESIZEVEC (long, fb_labels, fb_label_max); |
2022 | fb_label_instances = XRESIZEVEC (long, fb_label_instances, fb_label_max); | |
7c743825 | 2023 | } /* if we needed to grow */ |
252b5132 RH |
2024 | |
2025 | fb_labels[fb_label_count] = label; | |
2026 | fb_label_instances[fb_label_count] = 1; | |
2027 | ++fb_label_count; | |
2028 | } | |
2029 | ||
7c743825 | 2030 | static long |
74937d39 | 2031 | fb_label_instance (long label) |
252b5132 RH |
2032 | { |
2033 | long *i; | |
2034 | ||
b4e6cb80 | 2035 | if ((unsigned long) label < FB_LABEL_SPECIAL) |
252b5132 RH |
2036 | { |
2037 | return (fb_low_counter[label]); | |
2038 | } | |
2039 | ||
2040 | if (fb_labels != NULL) | |
2041 | { | |
2042 | for (i = fb_labels + FB_LABEL_SPECIAL; | |
2043 | i < fb_labels + fb_label_count; ++i) | |
2044 | { | |
2045 | if (*i == label) | |
2046 | { | |
2047 | return (fb_label_instances[i - fb_labels]); | |
7c743825 KH |
2048 | } /* if we find it */ |
2049 | } /* for each existing label */ | |
252b5132 RH |
2050 | } |
2051 | ||
2052 | /* We didn't find the label, so this must be a reference to the | |
2053 | first instance. */ | |
2054 | return 0; | |
2055 | } | |
2056 | ||
7c743825 KH |
2057 | /* Caller must copy returned name: we re-use the area for the next name. |
2058 | ||
2b0f3761 | 2059 | The mth occurrence of label n: is turned into the symbol "Ln^Bm" |
7c743825 KH |
2060 | where n is the label number and m is the instance number. "L" makes |
2061 | it a label discarded unless debugging and "^B"('\2') ensures no | |
2062 | ordinary symbol SHOULD get the same name as a local label | |
2063 | symbol. The first "4:" is "L4^B1" - the m numbers begin at 1. | |
2064 | ||
2065 | dollar labels get the same treatment, except that ^A is used in | |
2066 | place of ^B. */ | |
2067 | ||
2068 | char * /* Return local label name. */ | |
74937d39 KH |
2069 | fb_label_name (long n, /* We just saw "n:", "nf" or "nb" : n a number. */ |
2070 | long augend /* 0 for nb, 1 for n:, nf. */) | |
252b5132 RH |
2071 | { |
2072 | long i; | |
7c743825 | 2073 | /* Returned to caller, then copied. Used for created names ("4f"). */ |
252b5132 | 2074 | static char symbol_name_build[24]; |
ed9e98c2 AM |
2075 | char *p; |
2076 | char *q; | |
7c743825 | 2077 | char symbol_name_temporary[20]; /* Build up a number, BACKWARDS. */ |
252b5132 RH |
2078 | |
2079 | know (n >= 0); | |
a76903bf | 2080 | #ifdef TC_MMIX |
71ba24a1 | 2081 | know ((unsigned long) augend <= 2 /* See mmix_fb_label. */); |
a76903bf | 2082 | #else |
71ba24a1 | 2083 | know ((unsigned long) augend <= 1); |
a76903bf | 2084 | #endif |
252b5132 | 2085 | p = symbol_name_build; |
aa257fcd NC |
2086 | #ifdef LOCAL_LABEL_PREFIX |
2087 | *p++ = LOCAL_LABEL_PREFIX; | |
2088 | #endif | |
252b5132 RH |
2089 | *p++ = 'L'; |
2090 | ||
7c743825 KH |
2091 | /* Next code just does sprintf( {}, "%d", n); */ |
2092 | /* Label number. */ | |
252b5132 RH |
2093 | q = symbol_name_temporary; |
2094 | for (*q++ = 0, i = n; i; ++q) | |
2095 | { | |
2096 | *q = i % 10 + '0'; | |
2097 | i /= 10; | |
2098 | } | |
2099 | while ((*p = *--q) != '\0') | |
2100 | ++p; | |
2101 | ||
aa257fcd | 2102 | *p++ = LOCAL_LABEL_CHAR; /* ^B */ |
252b5132 | 2103 | |
7c743825 | 2104 | /* Instance number. */ |
252b5132 RH |
2105 | q = symbol_name_temporary; |
2106 | for (*q++ = 0, i = fb_label_instance (n) + augend; i; ++q) | |
2107 | { | |
2108 | *q = i % 10 + '0'; | |
2109 | i /= 10; | |
2110 | } | |
5bb3703f | 2111 | while ((*p++ = *--q) != '\0'); |
252b5132 | 2112 | |
7c743825 | 2113 | /* The label, as a '\0' ended string, starts at symbol_name_build. */ |
252b5132 | 2114 | return (symbol_name_build); |
7c743825 | 2115 | } |
252b5132 | 2116 | |
7c743825 KH |
2117 | /* Decode name that may have been generated by foo_label_name() above. |
2118 | If the name wasn't generated by foo_label_name(), then return it | |
2119 | unaltered. This is used for error messages. */ | |
252b5132 RH |
2120 | |
2121 | char * | |
74937d39 | 2122 | decode_local_label_name (char *s) |
252b5132 RH |
2123 | { |
2124 | char *p; | |
2125 | char *symbol_decode; | |
2126 | int label_number; | |
2127 | int instance_number; | |
cd0bbe6e | 2128 | const char *type; |
d95767bf | 2129 | const char *message_format; |
91d6fa6a | 2130 | int lindex = 0; |
43ad3147 | 2131 | |
aa257fcd | 2132 | #ifdef LOCAL_LABEL_PREFIX |
91d6fa6a NC |
2133 | if (s[lindex] == LOCAL_LABEL_PREFIX) |
2134 | ++lindex; | |
aa257fcd | 2135 | #endif |
43ad3147 | 2136 | |
91d6fa6a | 2137 | if (s[lindex] != 'L') |
252b5132 RH |
2138 | return s; |
2139 | ||
91d6fa6a | 2140 | for (label_number = 0, p = s + lindex + 1; ISDIGIT (*p); ++p) |
252b5132 RH |
2141 | label_number = (10 * label_number) + *p - '0'; |
2142 | ||
aa257fcd | 2143 | if (*p == DOLLAR_LABEL_CHAR) |
252b5132 | 2144 | type = "dollar"; |
aa257fcd | 2145 | else if (*p == LOCAL_LABEL_CHAR) |
252b5132 RH |
2146 | type = "fb"; |
2147 | else | |
2148 | return s; | |
2149 | ||
3882b010 | 2150 | for (instance_number = 0, p++; ISDIGIT (*p); ++p) |
252b5132 RH |
2151 | instance_number = (10 * instance_number) + *p - '0'; |
2152 | ||
d95767bf | 2153 | message_format = _("\"%d\" (instance number %d of a %s label)"); |
1e9cc1c2 | 2154 | symbol_decode = (char *) obstack_alloc (¬es, strlen (message_format) + 30); |
252b5132 RH |
2155 | sprintf (symbol_decode, message_format, label_number, instance_number, type); |
2156 | ||
2157 | return symbol_decode; | |
2158 | } | |
2159 | ||
2160 | /* Get the value of a symbol. */ | |
2161 | ||
2162 | valueT | |
74937d39 | 2163 | S_GET_VALUE (symbolS *s) |
252b5132 | 2164 | { |
5014c2d2 | 2165 | if (s->flags.local_symbol) |
ac62c346 | 2166 | return resolve_symbol_value (s); |
49309057 | 2167 | |
3c0d9d71 | 2168 | if (!s->flags.resolved) |
e46d99eb | 2169 | { |
6386f3a7 AM |
2170 | valueT val = resolve_symbol_value (s); |
2171 | if (!finalize_syms) | |
e46d99eb AM |
2172 | return val; |
2173 | } | |
06e77878 | 2174 | if (S_IS_WEAKREFR (s)) |
5014c2d2 | 2175 | return S_GET_VALUE (s->x->value.X_add_symbol); |
06e77878 | 2176 | |
5014c2d2 | 2177 | if (s->x->value.X_op != O_constant) |
252b5132 | 2178 | { |
3c0d9d71 | 2179 | if (! s->flags.resolved |
5014c2d2 | 2180 | || s->x->value.X_op != O_symbol |
252b5132 | 2181 | || (S_IS_DEFINED (s) && ! S_IS_COMMON (s))) |
0e389e77 | 2182 | as_bad (_("attempt to get value of unresolved symbol `%s'"), |
252b5132 | 2183 | S_GET_NAME (s)); |
252b5132 | 2184 | } |
5014c2d2 | 2185 | return (valueT) s->x->value.X_add_number; |
252b5132 RH |
2186 | } |
2187 | ||
2188 | /* Set the value of a symbol. */ | |
2189 | ||
2190 | void | |
74937d39 | 2191 | S_SET_VALUE (symbolS *s, valueT val) |
252b5132 | 2192 | { |
5014c2d2 | 2193 | if (s->flags.local_symbol) |
49309057 | 2194 | { |
3c0d9d71 | 2195 | ((struct local_symbol *) s)->value = val; |
49309057 ILT |
2196 | return; |
2197 | } | |
2198 | ||
5014c2d2 AM |
2199 | s->x->value.X_op = O_constant; |
2200 | s->x->value.X_add_number = (offsetT) val; | |
2201 | s->x->value.X_unsigned = 0; | |
06e77878 | 2202 | S_CLEAR_WEAKREFR (s); |
252b5132 RH |
2203 | } |
2204 | ||
2205 | void | |
74937d39 | 2206 | copy_symbol_attributes (symbolS *dest, symbolS *src) |
252b5132 | 2207 | { |
5014c2d2 AM |
2208 | if (dest->flags.local_symbol) |
2209 | dest = local_symbol_convert (dest); | |
2210 | if (src->flags.local_symbol) | |
2211 | src = local_symbol_convert (src); | |
49309057 | 2212 | |
252b5132 RH |
2213 | /* In an expression, transfer the settings of these flags. |
2214 | The user can override later, of course. */ | |
ad04f5ce L |
2215 | #define COPIED_SYMFLAGS (BSF_FUNCTION | BSF_OBJECT \ |
2216 | | BSF_GNU_INDIRECT_FUNCTION) | |
252b5132 | 2217 | dest->bsym->flags |= src->bsym->flags & COPIED_SYMFLAGS; |
252b5132 RH |
2218 | |
2219 | #ifdef OBJ_COPY_SYMBOL_ATTRIBUTES | |
2220 | OBJ_COPY_SYMBOL_ATTRIBUTES (dest, src); | |
2221 | #endif | |
794ba86a DJ |
2222 | |
2223 | #ifdef TC_COPY_SYMBOL_ATTRIBUTES | |
2224 | TC_COPY_SYMBOL_ATTRIBUTES (dest, src); | |
2225 | #endif | |
252b5132 RH |
2226 | } |
2227 | ||
252b5132 | 2228 | int |
74937d39 | 2229 | S_IS_FUNCTION (symbolS *s) |
252b5132 | 2230 | { |
49309057 ILT |
2231 | flagword flags; |
2232 | ||
5014c2d2 | 2233 | if (s->flags.local_symbol) |
49309057 ILT |
2234 | return 0; |
2235 | ||
2236 | flags = s->bsym->flags; | |
252b5132 RH |
2237 | |
2238 | return (flags & BSF_FUNCTION) != 0; | |
2239 | } | |
2240 | ||
2241 | int | |
74937d39 | 2242 | S_IS_EXTERNAL (symbolS *s) |
252b5132 | 2243 | { |
49309057 ILT |
2244 | flagword flags; |
2245 | ||
5014c2d2 | 2246 | if (s->flags.local_symbol) |
49309057 ILT |
2247 | return 0; |
2248 | ||
2249 | flags = s->bsym->flags; | |
252b5132 | 2250 | |
7c743825 | 2251 | /* Sanity check. */ |
252b5132 RH |
2252 | if ((flags & BSF_LOCAL) && (flags & BSF_GLOBAL)) |
2253 | abort (); | |
2254 | ||
2255 | return (flags & BSF_GLOBAL) != 0; | |
2256 | } | |
2257 | ||
2258 | int | |
74937d39 | 2259 | S_IS_WEAK (symbolS *s) |
252b5132 | 2260 | { |
5014c2d2 | 2261 | if (s->flags.local_symbol) |
49309057 | 2262 | return 0; |
06e77878 AO |
2263 | /* Conceptually, a weakrefr is weak if the referenced symbol is. We |
2264 | could probably handle a WEAKREFR as always weak though. E.g., if | |
2265 | the referenced symbol has lost its weak status, there's no reason | |
2266 | to keep handling the weakrefr as if it was weak. */ | |
2267 | if (S_IS_WEAKREFR (s)) | |
5014c2d2 | 2268 | return S_IS_WEAK (s->x->value.X_add_symbol); |
252b5132 RH |
2269 | return (s->bsym->flags & BSF_WEAK) != 0; |
2270 | } | |
2271 | ||
06e77878 AO |
2272 | int |
2273 | S_IS_WEAKREFR (symbolS *s) | |
2274 | { | |
5014c2d2 | 2275 | if (s->flags.local_symbol) |
06e77878 | 2276 | return 0; |
3c0d9d71 | 2277 | return s->flags.weakrefr != 0; |
06e77878 AO |
2278 | } |
2279 | ||
2280 | int | |
2281 | S_IS_WEAKREFD (symbolS *s) | |
2282 | { | |
5014c2d2 | 2283 | if (s->flags.local_symbol) |
06e77878 | 2284 | return 0; |
3c0d9d71 | 2285 | return s->flags.weakrefd != 0; |
06e77878 AO |
2286 | } |
2287 | ||
252b5132 | 2288 | int |
74937d39 | 2289 | S_IS_COMMON (symbolS *s) |
252b5132 | 2290 | { |
5014c2d2 | 2291 | if (s->flags.local_symbol) |
49309057 | 2292 | return 0; |
252b5132 RH |
2293 | return bfd_is_com_section (s->bsym->section); |
2294 | } | |
2295 | ||
2296 | int | |
74937d39 | 2297 | S_IS_DEFINED (symbolS *s) |
252b5132 | 2298 | { |
5014c2d2 | 2299 | if (s->flags.local_symbol) |
3c0d9d71 | 2300 | return ((struct local_symbol *) s)->section != undefined_section; |
252b5132 RH |
2301 | return s->bsym->section != undefined_section; |
2302 | } | |
2303 | ||
a161fe53 AM |
2304 | |
2305 | #ifndef EXTERN_FORCE_RELOC | |
2306 | #define EXTERN_FORCE_RELOC IS_ELF | |
2307 | #endif | |
2308 | ||
2309 | /* Return true for symbols that should not be reduced to section | |
2310 | symbols or eliminated from expressions, because they may be | |
2311 | overridden by the linker. */ | |
2312 | int | |
74937d39 | 2313 | S_FORCE_RELOC (symbolS *s, int strict) |
a161fe53 | 2314 | { |
f2d830a5 | 2315 | segT sec; |
5014c2d2 | 2316 | if (s->flags.local_symbol) |
3c0d9d71 | 2317 | sec = ((struct local_symbol *) s)->section; |
f2d830a5 AM |
2318 | else |
2319 | { | |
2320 | if ((strict | |
ae6063d4 AM |
2321 | && ((s->bsym->flags & BSF_WEAK) != 0 |
2322 | || (EXTERN_FORCE_RELOC | |
2323 | && (s->bsym->flags & BSF_GLOBAL) != 0))) | |
f2d830a5 | 2324 | || (s->bsym->flags & BSF_GNU_INDIRECT_FUNCTION) != 0) |
5b7c81bd | 2325 | return true; |
f2d830a5 AM |
2326 | sec = s->bsym->section; |
2327 | } | |
2328 | return bfd_is_und_section (sec) || bfd_is_com_section (sec); | |
a161fe53 AM |
2329 | } |
2330 | ||
252b5132 | 2331 | int |
74937d39 | 2332 | S_IS_DEBUG (symbolS *s) |
252b5132 | 2333 | { |
5014c2d2 | 2334 | if (s->flags.local_symbol) |
49309057 | 2335 | return 0; |
252b5132 RH |
2336 | if (s->bsym->flags & BSF_DEBUGGING) |
2337 | return 1; | |
2338 | return 0; | |
2339 | } | |
2340 | ||
2341 | int | |
74937d39 | 2342 | S_IS_LOCAL (symbolS *s) |
252b5132 | 2343 | { |
49309057 | 2344 | flagword flags; |
252b5132 RH |
2345 | const char *name; |
2346 | ||
5014c2d2 | 2347 | if (s->flags.local_symbol) |
49309057 ILT |
2348 | return 1; |
2349 | ||
2350 | flags = s->bsym->flags; | |
2351 | ||
7c743825 | 2352 | /* Sanity check. */ |
252b5132 RH |
2353 | if ((flags & BSF_LOCAL) && (flags & BSF_GLOBAL)) |
2354 | abort (); | |
2355 | ||
e6f7f6d1 | 2356 | if (bfd_asymbol_section (s->bsym) == reg_section) |
252b5132 RH |
2357 | return 1; |
2358 | ||
2359 | if (flag_strip_local_absolute | |
bb82af9f NC |
2360 | /* Keep BSF_FILE symbols in order to allow debuggers to identify |
2361 | the source file even when the object file is stripped. */ | |
2362 | && (flags & (BSF_GLOBAL | BSF_FILE)) == 0 | |
e6f7f6d1 | 2363 | && bfd_asymbol_section (s->bsym) == absolute_section) |
252b5132 RH |
2364 | return 1; |
2365 | ||
2366 | name = S_GET_NAME (s); | |
2367 | return (name != NULL | |
2368 | && ! S_IS_DEBUG (s) | |
aa257fcd NC |
2369 | && (strchr (name, DOLLAR_LABEL_CHAR) |
2370 | || strchr (name, LOCAL_LABEL_CHAR) | |
2469b3c5 JW |
2371 | #if FAKE_LABEL_CHAR != DOLLAR_LABEL_CHAR |
2372 | || strchr (name, FAKE_LABEL_CHAR) | |
2373 | #endif | |
df58fc94 | 2374 | || TC_LABEL_IS_LOCAL (name) |
252b5132 RH |
2375 | || (! flag_keep_locals |
2376 | && (bfd_is_local_label (stdoutput, s->bsym) | |
2377 | || (flag_mri | |
2378 | && name[0] == '?' | |
2379 | && name[1] == '?'))))); | |
2380 | } | |
2381 | ||
252b5132 | 2382 | int |
74937d39 | 2383 | S_IS_STABD (symbolS *s) |
252b5132 RH |
2384 | { |
2385 | return S_GET_NAME (s) == 0; | |
2386 | } | |
2387 | ||
6885131b AM |
2388 | int |
2389 | S_CAN_BE_REDEFINED (const symbolS *s) | |
2390 | { | |
5014c2d2 AM |
2391 | if (s->flags.local_symbol) |
2392 | return (((struct local_symbol *) s)->frag | |
6885131b AM |
2393 | == &predefined_address_frag); |
2394 | /* Permit register names to be redefined. */ | |
2395 | return s->bsym->section == reg_section; | |
2396 | } | |
2397 | ||
9497f5ac NC |
2398 | int |
2399 | S_IS_VOLATILE (const symbolS *s) | |
2400 | { | |
5014c2d2 | 2401 | if (s->flags.local_symbol) |
9497f5ac | 2402 | return 0; |
3c0d9d71 | 2403 | return s->flags.volatil; |
9497f5ac NC |
2404 | } |
2405 | ||
2406 | int | |
2407 | S_IS_FORWARD_REF (const symbolS *s) | |
2408 | { | |
5014c2d2 | 2409 | if (s->flags.local_symbol) |
9497f5ac | 2410 | return 0; |
3c0d9d71 | 2411 | return s->flags.forward_ref; |
9497f5ac NC |
2412 | } |
2413 | ||
9758f3fc | 2414 | const char * |
74937d39 | 2415 | S_GET_NAME (symbolS *s) |
252b5132 | 2416 | { |
5014c2d2 | 2417 | return s->name; |
252b5132 RH |
2418 | } |
2419 | ||
2420 | segT | |
74937d39 | 2421 | S_GET_SEGMENT (symbolS *s) |
252b5132 | 2422 | { |
5014c2d2 | 2423 | if (s->flags.local_symbol) |
3c0d9d71 | 2424 | return ((struct local_symbol *) s)->section; |
252b5132 RH |
2425 | return s->bsym->section; |
2426 | } | |
2427 | ||
2428 | void | |
74937d39 | 2429 | S_SET_SEGMENT (symbolS *s, segT seg) |
252b5132 | 2430 | { |
5014c2d2 | 2431 | if (s->flags.local_symbol) |
49309057 | 2432 | { |
5014c2d2 AM |
2433 | ((struct local_symbol *) s)->section = seg; |
2434 | return; | |
49309057 ILT |
2435 | } |
2436 | ||
5014c2d2 AM |
2437 | /* Don't reassign section symbols. The direct reason is to prevent seg |
2438 | faults assigning back to const global symbols such as *ABS*, but it | |
2439 | shouldn't happen anyway. */ | |
252b5132 RH |
2440 | if (s->bsym->flags & BSF_SECTION_SYM) |
2441 | { | |
2442 | if (s->bsym->section != seg) | |
7c743825 | 2443 | abort (); |
252b5132 RH |
2444 | } |
2445 | else | |
578c64a4 NC |
2446 | { |
2447 | if (multibyte_handling == multibyte_warn_syms | |
2448 | && ! s->flags.local_symbol | |
2449 | && seg != undefined_section | |
2450 | && ! s->flags.multibyte_warned | |
2451 | && scan_for_multibyte_characters ((const unsigned char *) s->name, | |
2452 | (const unsigned char *) s->name + strlen (s->name), | |
2453 | false)) | |
2454 | { | |
2455 | as_warn (_("symbol '%s' contains multibyte characters"), s->name); | |
2456 | s->flags.multibyte_warned = 1; | |
2457 | } | |
2458 | ||
2459 | s->bsym->section = seg; | |
2460 | } | |
252b5132 RH |
2461 | } |
2462 | ||
2463 | void | |
74937d39 | 2464 | S_SET_EXTERNAL (symbolS *s) |
252b5132 | 2465 | { |
5014c2d2 AM |
2466 | if (s->flags.local_symbol) |
2467 | s = local_symbol_convert (s); | |
252b5132 RH |
2468 | if ((s->bsym->flags & BSF_WEAK) != 0) |
2469 | { | |
2470 | /* Let .weak override .global. */ | |
2471 | return; | |
2472 | } | |
4d7c34bf NC |
2473 | if (s->bsym->flags & BSF_SECTION_SYM) |
2474 | { | |
4d7c34bf | 2475 | /* Do not reassign section symbols. */ |
dd933805 | 2476 | as_warn (_("can't make section symbol global")); |
4d7c34bf NC |
2477 | return; |
2478 | } | |
97c4f2d9 | 2479 | #ifndef TC_GLOBAL_REGISTER_SYMBOL_OK |
d0548f34 L |
2480 | if (S_GET_SEGMENT (s) == reg_section) |
2481 | { | |
dd933805 | 2482 | as_bad (_("can't make register symbol global")); |
d0548f34 L |
2483 | return; |
2484 | } | |
97c4f2d9 | 2485 | #endif |
252b5132 | 2486 | s->bsym->flags |= BSF_GLOBAL; |
7c743825 | 2487 | s->bsym->flags &= ~(BSF_LOCAL | BSF_WEAK); |
977cdf5a | 2488 | |
22ba0981 | 2489 | #ifdef TE_PE |
977cdf5a NC |
2490 | if (! an_external_name && S_GET_NAME(s)[0] != '.') |
2491 | an_external_name = S_GET_NAME (s); | |
2492 | #endif | |
252b5132 RH |
2493 | } |
2494 | ||
2495 | void | |
74937d39 | 2496 | S_CLEAR_EXTERNAL (symbolS *s) |
252b5132 | 2497 | { |
5014c2d2 | 2498 | if (s->flags.local_symbol) |
49309057 | 2499 | return; |
252b5132 RH |
2500 | if ((s->bsym->flags & BSF_WEAK) != 0) |
2501 | { | |
2502 | /* Let .weak override. */ | |
2503 | return; | |
2504 | } | |
2505 | s->bsym->flags |= BSF_LOCAL; | |
7c743825 | 2506 | s->bsym->flags &= ~(BSF_GLOBAL | BSF_WEAK); |
252b5132 RH |
2507 | } |
2508 | ||
2509 | void | |
74937d39 | 2510 | S_SET_WEAK (symbolS *s) |
252b5132 | 2511 | { |
5014c2d2 AM |
2512 | if (s->flags.local_symbol) |
2513 | s = local_symbol_convert (s); | |
06e77878 AO |
2514 | #ifdef obj_set_weak_hook |
2515 | obj_set_weak_hook (s); | |
2516 | #endif | |
252b5132 | 2517 | s->bsym->flags |= BSF_WEAK; |
7c743825 | 2518 | s->bsym->flags &= ~(BSF_GLOBAL | BSF_LOCAL); |
252b5132 RH |
2519 | } |
2520 | ||
06e77878 AO |
2521 | void |
2522 | S_SET_WEAKREFR (symbolS *s) | |
2523 | { | |
5014c2d2 AM |
2524 | if (s->flags.local_symbol) |
2525 | s = local_symbol_convert (s); | |
3c0d9d71 | 2526 | s->flags.weakrefr = 1; |
06e77878 AO |
2527 | /* If the alias was already used, make sure we mark the target as |
2528 | used as well, otherwise it might be dropped from the symbol | |
2529 | table. This may have unintended side effects if the alias is | |
2530 | later redirected to another symbol, such as keeping the unused | |
2531 | previous target in the symbol table. Since it will be weak, it's | |
2532 | not a big deal. */ | |
3c0d9d71 | 2533 | if (s->flags.used) |
5014c2d2 | 2534 | symbol_mark_used (s->x->value.X_add_symbol); |
06e77878 AO |
2535 | } |
2536 | ||
2537 | void | |
2538 | S_CLEAR_WEAKREFR (symbolS *s) | |
2539 | { | |
5014c2d2 | 2540 | if (s->flags.local_symbol) |
06e77878 | 2541 | return; |
3c0d9d71 | 2542 | s->flags.weakrefr = 0; |
06e77878 AO |
2543 | } |
2544 | ||
2545 | void | |
2546 | S_SET_WEAKREFD (symbolS *s) | |
2547 | { | |
5014c2d2 AM |
2548 | if (s->flags.local_symbol) |
2549 | s = local_symbol_convert (s); | |
3c0d9d71 | 2550 | s->flags.weakrefd = 1; |
06e77878 AO |
2551 | S_SET_WEAK (s); |
2552 | } | |
2553 | ||
2554 | void | |
2555 | S_CLEAR_WEAKREFD (symbolS *s) | |
2556 | { | |
5014c2d2 | 2557 | if (s->flags.local_symbol) |
06e77878 | 2558 | return; |
3c0d9d71 | 2559 | if (s->flags.weakrefd) |
06e77878 | 2560 | { |
3c0d9d71 | 2561 | s->flags.weakrefd = 0; |
06e77878 AO |
2562 | /* If a weakref target symbol is weak, then it was never |
2563 | referenced directly before, not even in a .global directive, | |
2564 | so decay it to local. If it remains undefined, it will be | |
2565 | later turned into a global, like any other undefined | |
2566 | symbol. */ | |
2567 | if (s->bsym->flags & BSF_WEAK) | |
2568 | { | |
2569 | #ifdef obj_clear_weak_hook | |
2570 | obj_clear_weak_hook (s); | |
2571 | #endif | |
2572 | s->bsym->flags &= ~BSF_WEAK; | |
2573 | s->bsym->flags |= BSF_LOCAL; | |
2574 | } | |
2575 | } | |
2576 | } | |
2577 | ||
00f7efb6 | 2578 | void |
74937d39 | 2579 | S_SET_THREAD_LOCAL (symbolS *s) |
00f7efb6 | 2580 | { |
5014c2d2 AM |
2581 | if (s->flags.local_symbol) |
2582 | s = local_symbol_convert (s); | |
00f7efb6 JJ |
2583 | if (bfd_is_com_section (s->bsym->section) |
2584 | && (s->bsym->flags & BSF_THREAD_LOCAL) != 0) | |
2585 | return; | |
2586 | s->bsym->flags |= BSF_THREAD_LOCAL; | |
2587 | if ((s->bsym->flags & BSF_FUNCTION) != 0) | |
2588 | as_bad (_("Accessing function `%s' as thread-local object"), | |
2589 | S_GET_NAME (s)); | |
2590 | else if (! bfd_is_und_section (s->bsym->section) | |
2591 | && (s->bsym->section->flags & SEC_THREAD_LOCAL) == 0) | |
2592 | as_bad (_("Accessing `%s' as thread-local object"), | |
2593 | S_GET_NAME (s)); | |
2594 | } | |
2595 | ||
252b5132 | 2596 | void |
977cdf5a | 2597 | S_SET_NAME (symbolS *s, const char *name) |
252b5132 | 2598 | { |
5014c2d2 AM |
2599 | s->name = name; |
2600 | if (s->flags.local_symbol) | |
2601 | return; | |
252b5132 RH |
2602 | s->bsym->name = name; |
2603 | } | |
49309057 | 2604 | |
9497f5ac NC |
2605 | void |
2606 | S_SET_VOLATILE (symbolS *s) | |
2607 | { | |
5014c2d2 AM |
2608 | if (s->flags.local_symbol) |
2609 | s = local_symbol_convert (s); | |
3c0d9d71 | 2610 | s->flags.volatil = 1; |
9497f5ac NC |
2611 | } |
2612 | ||
92757bc9 JB |
2613 | void |
2614 | S_CLEAR_VOLATILE (symbolS *s) | |
2615 | { | |
5014c2d2 | 2616 | if (!s->flags.local_symbol) |
3c0d9d71 | 2617 | s->flags.volatil = 0; |
92757bc9 JB |
2618 | } |
2619 | ||
9497f5ac NC |
2620 | void |
2621 | S_SET_FORWARD_REF (symbolS *s) | |
2622 | { | |
5014c2d2 AM |
2623 | if (s->flags.local_symbol) |
2624 | s = local_symbol_convert (s); | |
3c0d9d71 | 2625 | s->flags.forward_ref = 1; |
9497f5ac NC |
2626 | } |
2627 | ||
49309057 ILT |
2628 | /* Return the previous symbol in a chain. */ |
2629 | ||
2630 | symbolS * | |
74937d39 | 2631 | symbol_previous (symbolS *s) |
49309057 | 2632 | { |
5014c2d2 | 2633 | if (s->flags.local_symbol) |
49309057 | 2634 | abort (); |
5014c2d2 | 2635 | return s->x->previous; |
49309057 ILT |
2636 | } |
2637 | ||
49309057 ILT |
2638 | /* Return the next symbol in a chain. */ |
2639 | ||
2640 | symbolS * | |
74937d39 | 2641 | symbol_next (symbolS *s) |
49309057 | 2642 | { |
5014c2d2 | 2643 | if (s->flags.local_symbol) |
49309057 | 2644 | abort (); |
5014c2d2 | 2645 | return s->x->next; |
49309057 ILT |
2646 | } |
2647 | ||
2648 | /* Return a pointer to the value of a symbol as an expression. */ | |
2649 | ||
2650 | expressionS * | |
74937d39 | 2651 | symbol_get_value_expression (symbolS *s) |
49309057 | 2652 | { |
5014c2d2 AM |
2653 | if (s->flags.local_symbol) |
2654 | s = local_symbol_convert (s); | |
2655 | return &s->x->value; | |
49309057 ILT |
2656 | } |
2657 | ||
2658 | /* Set the value of a symbol to an expression. */ | |
2659 | ||
2660 | void | |
74937d39 | 2661 | symbol_set_value_expression (symbolS *s, const expressionS *exp) |
49309057 | 2662 | { |
5014c2d2 AM |
2663 | if (s->flags.local_symbol) |
2664 | s = local_symbol_convert (s); | |
2665 | s->x->value = *exp; | |
06e77878 | 2666 | S_CLEAR_WEAKREFR (s); |
49309057 ILT |
2667 | } |
2668 | ||
087d837e L |
2669 | /* Return whether 2 symbols are the same. */ |
2670 | ||
2671 | int | |
2672 | symbol_same_p (symbolS *s1, symbolS *s2) | |
2673 | { | |
087d837e L |
2674 | return s1 == s2; |
2675 | } | |
2676 | ||
be95a9c1 AM |
2677 | /* Return a pointer to the X_add_number component of a symbol. */ |
2678 | ||
514d955d | 2679 | offsetT * |
be95a9c1 AM |
2680 | symbol_X_add_number (symbolS *s) |
2681 | { | |
5014c2d2 | 2682 | if (s->flags.local_symbol) |
3c0d9d71 | 2683 | return (offsetT *) &((struct local_symbol *) s)->value; |
be95a9c1 | 2684 | |
5014c2d2 | 2685 | return &s->x->value.X_add_number; |
be95a9c1 AM |
2686 | } |
2687 | ||
b7d6ed97 RH |
2688 | /* Set the value of SYM to the current position in the current segment. */ |
2689 | ||
2690 | void | |
74937d39 | 2691 | symbol_set_value_now (symbolS *sym) |
b7d6ed97 RH |
2692 | { |
2693 | S_SET_SEGMENT (sym, now_seg); | |
2694 | S_SET_VALUE (sym, frag_now_fix ()); | |
2695 | symbol_set_frag (sym, frag_now); | |
2696 | } | |
2697 | ||
49309057 ILT |
2698 | /* Set the frag of a symbol. */ |
2699 | ||
2700 | void | |
74937d39 | 2701 | symbol_set_frag (symbolS *s, fragS *f) |
49309057 | 2702 | { |
5014c2d2 | 2703 | if (s->flags.local_symbol) |
49309057 | 2704 | { |
5014c2d2 | 2705 | ((struct local_symbol *) s)->frag = f; |
49309057 ILT |
2706 | return; |
2707 | } | |
3c0d9d71 | 2708 | s->frag = f; |
06e77878 | 2709 | S_CLEAR_WEAKREFR (s); |
49309057 ILT |
2710 | } |
2711 | ||
2712 | /* Return the frag of a symbol. */ | |
2713 | ||
2714 | fragS * | |
74937d39 | 2715 | symbol_get_frag (symbolS *s) |
49309057 | 2716 | { |
5014c2d2 AM |
2717 | if (s->flags.local_symbol) |
2718 | return ((struct local_symbol *) s)->frag; | |
3c0d9d71 | 2719 | return s->frag; |
49309057 ILT |
2720 | } |
2721 | ||
2722 | /* Mark a symbol as having been used. */ | |
2723 | ||
2724 | void | |
74937d39 | 2725 | symbol_mark_used (symbolS *s) |
49309057 | 2726 | { |
5014c2d2 | 2727 | if (s->flags.local_symbol) |
49309057 | 2728 | return; |
3c0d9d71 | 2729 | s->flags.used = 1; |
06e77878 | 2730 | if (S_IS_WEAKREFR (s)) |
5014c2d2 | 2731 | symbol_mark_used (s->x->value.X_add_symbol); |
49309057 ILT |
2732 | } |
2733 | ||
2734 | /* Clear the mark of whether a symbol has been used. */ | |
2735 | ||
2736 | void | |
74937d39 | 2737 | symbol_clear_used (symbolS *s) |
49309057 | 2738 | { |
5014c2d2 AM |
2739 | if (s->flags.local_symbol) |
2740 | s = local_symbol_convert (s); | |
3c0d9d71 | 2741 | s->flags.used = 0; |
49309057 ILT |
2742 | } |
2743 | ||
2744 | /* Return whether a symbol has been used. */ | |
2745 | ||
2746 | int | |
74937d39 | 2747 | symbol_used_p (symbolS *s) |
49309057 | 2748 | { |
5014c2d2 | 2749 | if (s->flags.local_symbol) |
49309057 | 2750 | return 1; |
3c0d9d71 | 2751 | return s->flags.used; |
49309057 ILT |
2752 | } |
2753 | ||
2754 | /* Mark a symbol as having been used in a reloc. */ | |
2755 | ||
2756 | void | |
74937d39 | 2757 | symbol_mark_used_in_reloc (symbolS *s) |
49309057 | 2758 | { |
5014c2d2 AM |
2759 | if (s->flags.local_symbol) |
2760 | s = local_symbol_convert (s); | |
3c0d9d71 | 2761 | s->flags.used_in_reloc = 1; |
49309057 ILT |
2762 | } |
2763 | ||
2764 | /* Clear the mark of whether a symbol has been used in a reloc. */ | |
2765 | ||
2766 | void | |
74937d39 | 2767 | symbol_clear_used_in_reloc (symbolS *s) |
49309057 | 2768 | { |
5014c2d2 | 2769 | if (s->flags.local_symbol) |
49309057 | 2770 | return; |
3c0d9d71 | 2771 | s->flags.used_in_reloc = 0; |
49309057 ILT |
2772 | } |
2773 | ||
2774 | /* Return whether a symbol has been used in a reloc. */ | |
2775 | ||
2776 | int | |
74937d39 | 2777 | symbol_used_in_reloc_p (symbolS *s) |
49309057 | 2778 | { |
5014c2d2 | 2779 | if (s->flags.local_symbol) |
49309057 | 2780 | return 0; |
3c0d9d71 | 2781 | return s->flags.used_in_reloc; |
49309057 ILT |
2782 | } |
2783 | ||
2784 | /* Mark a symbol as an MRI common symbol. */ | |
2785 | ||
2786 | void | |
74937d39 | 2787 | symbol_mark_mri_common (symbolS *s) |
49309057 | 2788 | { |
5014c2d2 AM |
2789 | if (s->flags.local_symbol) |
2790 | s = local_symbol_convert (s); | |
3c0d9d71 | 2791 | s->flags.mri_common = 1; |
49309057 ILT |
2792 | } |
2793 | ||
2794 | /* Clear the mark of whether a symbol is an MRI common symbol. */ | |
2795 | ||
2796 | void | |
74937d39 | 2797 | symbol_clear_mri_common (symbolS *s) |
49309057 | 2798 | { |
5014c2d2 | 2799 | if (s->flags.local_symbol) |
49309057 | 2800 | return; |
3c0d9d71 | 2801 | s->flags.mri_common = 0; |
49309057 ILT |
2802 | } |
2803 | ||
2804 | /* Return whether a symbol is an MRI common symbol. */ | |
2805 | ||
2806 | int | |
74937d39 | 2807 | symbol_mri_common_p (symbolS *s) |
49309057 | 2808 | { |
5014c2d2 | 2809 | if (s->flags.local_symbol) |
49309057 | 2810 | return 0; |
3c0d9d71 | 2811 | return s->flags.mri_common; |
49309057 ILT |
2812 | } |
2813 | ||
2814 | /* Mark a symbol as having been written. */ | |
2815 | ||
2816 | void | |
74937d39 | 2817 | symbol_mark_written (symbolS *s) |
49309057 | 2818 | { |
5014c2d2 | 2819 | if (s->flags.local_symbol) |
49309057 | 2820 | return; |
3c0d9d71 | 2821 | s->flags.written = 1; |
49309057 ILT |
2822 | } |
2823 | ||
2824 | /* Clear the mark of whether a symbol has been written. */ | |
2825 | ||
2826 | void | |
74937d39 | 2827 | symbol_clear_written (symbolS *s) |
49309057 | 2828 | { |
5014c2d2 | 2829 | if (s->flags.local_symbol) |
49309057 | 2830 | return; |
3c0d9d71 | 2831 | s->flags.written = 0; |
49309057 ILT |
2832 | } |
2833 | ||
2834 | /* Return whether a symbol has been written. */ | |
2835 | ||
2836 | int | |
74937d39 | 2837 | symbol_written_p (symbolS *s) |
49309057 | 2838 | { |
5014c2d2 | 2839 | if (s->flags.local_symbol) |
49309057 | 2840 | return 0; |
3c0d9d71 | 2841 | return s->flags.written; |
49309057 ILT |
2842 | } |
2843 | ||
eb09df16 L |
2844 | /* Mark a symbol as to be removed. */ |
2845 | ||
2846 | void | |
2847 | symbol_mark_removed (symbolS *s) | |
2848 | { | |
2849 | if (s->flags.local_symbol) | |
2850 | return; | |
2851 | s->flags.removed = 1; | |
2852 | } | |
2853 | ||
2854 | /* Return whether a symbol has been marked to be removed. */ | |
2855 | ||
2856 | int | |
2857 | symbol_removed_p (symbolS *s) | |
2858 | { | |
2859 | if (s->flags.local_symbol) | |
2860 | return 0; | |
2861 | return s->flags.removed; | |
2862 | } | |
2863 | ||
49309057 ILT |
2864 | /* Mark a symbol has having been resolved. */ |
2865 | ||
2866 | void | |
74937d39 | 2867 | symbol_mark_resolved (symbolS *s) |
49309057 | 2868 | { |
3c0d9d71 | 2869 | s->flags.resolved = 1; |
49309057 ILT |
2870 | } |
2871 | ||
2872 | /* Return whether a symbol has been resolved. */ | |
2873 | ||
2874 | int | |
74937d39 | 2875 | symbol_resolved_p (symbolS *s) |
49309057 | 2876 | { |
3c0d9d71 | 2877 | return s->flags.resolved; |
49309057 ILT |
2878 | } |
2879 | ||
2880 | /* Return whether a symbol is a section symbol. */ | |
2881 | ||
2882 | int | |
5014c2d2 | 2883 | symbol_section_p (symbolS *s) |
49309057 | 2884 | { |
5014c2d2 | 2885 | if (s->flags.local_symbol) |
49309057 | 2886 | return 0; |
49309057 | 2887 | return (s->bsym->flags & BSF_SECTION_SYM) != 0; |
49309057 ILT |
2888 | } |
2889 | ||
2890 | /* Return whether a symbol is equated to another symbol. */ | |
2891 | ||
2892 | int | |
74937d39 | 2893 | symbol_equated_p (symbolS *s) |
49309057 | 2894 | { |
5014c2d2 | 2895 | if (s->flags.local_symbol) |
49309057 | 2896 | return 0; |
5014c2d2 | 2897 | return s->x->value.X_op == O_symbol; |
49309057 ILT |
2898 | } |
2899 | ||
e0890092 AM |
2900 | /* Return whether a symbol is equated to another symbol, and should be |
2901 | treated specially when writing out relocs. */ | |
2902 | ||
2903 | int | |
74937d39 | 2904 | symbol_equated_reloc_p (symbolS *s) |
e0890092 | 2905 | { |
5014c2d2 | 2906 | if (s->flags.local_symbol) |
e0890092 AM |
2907 | return 0; |
2908 | /* X_op_symbol, normally not used for O_symbol, is set by | |
2909 | resolve_symbol_value to flag expression syms that have been | |
2910 | equated. */ | |
5014c2d2 | 2911 | return (s->x->value.X_op == O_symbol |
7be1c489 | 2912 | #if defined (OBJ_COFF) && defined (TE_PE) |
977cdf5a NC |
2913 | && ! S_IS_WEAK (s) |
2914 | #endif | |
5014c2d2 | 2915 | && ((s->flags.resolved && s->x->value.X_op_symbol != NULL) |
e0890092 AM |
2916 | || ! S_IS_DEFINED (s) |
2917 | || S_IS_COMMON (s))); | |
2918 | } | |
2919 | ||
49309057 ILT |
2920 | /* Return whether a symbol has a constant value. */ |
2921 | ||
2922 | int | |
74937d39 | 2923 | symbol_constant_p (symbolS *s) |
49309057 | 2924 | { |
5014c2d2 | 2925 | if (s->flags.local_symbol) |
49309057 | 2926 | return 1; |
5014c2d2 | 2927 | return s->x->value.X_op == O_constant; |
49309057 ILT |
2928 | } |
2929 | ||
bdf128d6 JB |
2930 | /* Return whether a symbol was cloned and thus removed from the global |
2931 | symbol list. */ | |
2932 | ||
2933 | int | |
2934 | symbol_shadow_p (symbolS *s) | |
2935 | { | |
5014c2d2 | 2936 | if (s->flags.local_symbol) |
bdf128d6 | 2937 | return 0; |
5014c2d2 | 2938 | return s->x->next == s; |
bdf128d6 JB |
2939 | } |
2940 | ||
5014c2d2 | 2941 | /* If S is a struct symbol return S, otherwise return NULL. */ |
8d1015a8 AM |
2942 | |
2943 | symbolS * | |
2944 | symbol_symbolS (symbolS *s) | |
2945 | { | |
5014c2d2 | 2946 | if (s->flags.local_symbol) |
8d1015a8 AM |
2947 | return NULL; |
2948 | return s; | |
2949 | } | |
2950 | ||
49309057 ILT |
2951 | /* Return the BFD symbol for a symbol. */ |
2952 | ||
2953 | asymbol * | |
74937d39 | 2954 | symbol_get_bfdsym (symbolS *s) |
49309057 | 2955 | { |
5014c2d2 AM |
2956 | if (s->flags.local_symbol) |
2957 | s = local_symbol_convert (s); | |
49309057 ILT |
2958 | return s->bsym; |
2959 | } | |
2960 | ||
2961 | /* Set the BFD symbol for a symbol. */ | |
2962 | ||
2963 | void | |
74937d39 | 2964 | symbol_set_bfdsym (symbolS *s, asymbol *bsym) |
49309057 | 2965 | { |
5014c2d2 AM |
2966 | if (s->flags.local_symbol) |
2967 | s = local_symbol_convert (s); | |
22fe14ad NC |
2968 | /* Usually, it is harmless to reset a symbol to a BFD section |
2969 | symbol. For example, obj_elf_change_section sets the BFD symbol | |
2970 | of an old symbol with the newly created section symbol. But when | |
2971 | we have multiple sections with the same name, the newly created | |
2972 | section may have the same name as an old section. We check if the | |
2973 | old symbol has been already marked as a section symbol before | |
2974 | resetting it. */ | |
2975 | if ((s->bsym->flags & BSF_SECTION_SYM) == 0) | |
2976 | s->bsym = bsym; | |
2977 | /* else XXX - What do we do now ? */ | |
49309057 ILT |
2978 | } |
2979 | ||
49309057 ILT |
2980 | #ifdef OBJ_SYMFIELD_TYPE |
2981 | ||
2982 | /* Get a pointer to the object format information for a symbol. */ | |
2983 | ||
2984 | OBJ_SYMFIELD_TYPE * | |
74937d39 | 2985 | symbol_get_obj (symbolS *s) |
49309057 | 2986 | { |
5014c2d2 AM |
2987 | if (s->flags.local_symbol) |
2988 | s = local_symbol_convert (s); | |
2989 | return &s->x->obj; | |
49309057 ILT |
2990 | } |
2991 | ||
2992 | /* Set the object format information for a symbol. */ | |
2993 | ||
2994 | void | |
74937d39 | 2995 | symbol_set_obj (symbolS *s, OBJ_SYMFIELD_TYPE *o) |
49309057 | 2996 | { |
5014c2d2 AM |
2997 | if (s->flags.local_symbol) |
2998 | s = local_symbol_convert (s); | |
2999 | s->x->obj = *o; | |
49309057 ILT |
3000 | } |
3001 | ||
3002 | #endif /* OBJ_SYMFIELD_TYPE */ | |
3003 | ||
3004 | #ifdef TC_SYMFIELD_TYPE | |
3005 | ||
3006 | /* Get a pointer to the processor information for a symbol. */ | |
3007 | ||
3008 | TC_SYMFIELD_TYPE * | |
74937d39 | 3009 | symbol_get_tc (symbolS *s) |
49309057 | 3010 | { |
5014c2d2 AM |
3011 | if (s->flags.local_symbol) |
3012 | s = local_symbol_convert (s); | |
3013 | return &s->x->tc; | |
49309057 ILT |
3014 | } |
3015 | ||
3016 | /* Set the processor information for a symbol. */ | |
3017 | ||
3018 | void | |
74937d39 | 3019 | symbol_set_tc (symbolS *s, TC_SYMFIELD_TYPE *o) |
49309057 | 3020 | { |
5014c2d2 AM |
3021 | if (s->flags.local_symbol) |
3022 | s = local_symbol_convert (s); | |
3023 | s->x->tc = *o; | |
49309057 ILT |
3024 | } |
3025 | ||
3026 | #endif /* TC_SYMFIELD_TYPE */ | |
3027 | ||
252b5132 | 3028 | void |
74937d39 | 3029 | symbol_begin (void) |
252b5132 RH |
3030 | { |
3031 | symbol_lastP = NULL; | |
7c743825 | 3032 | symbol_rootP = NULL; /* In case we have 0 symbols (!!) */ |
d3b740ca ML |
3033 | sy_hash = htab_create_alloc (16, hash_symbol_entry, eq_symbol_entry, |
3034 | NULL, xcalloc, free); | |
252b5132 | 3035 | |
252b5132 | 3036 | #if defined (EMIT_SECTION_SYMBOLS) || !defined (RELOC_REQUIRES_SYMBOL) |
45dfa85a | 3037 | abs_symbol.bsym = bfd_abs_section_ptr->symbol; |
252b5132 | 3038 | #endif |
5014c2d2 AM |
3039 | abs_symbol.x = &abs_symbol_x; |
3040 | abs_symbol.x->value.X_op = O_constant; | |
3c0d9d71 | 3041 | abs_symbol.frag = &zero_address_frag; |
252b5132 RH |
3042 | |
3043 | if (LOCAL_LABELS_FB) | |
3044 | fb_label_init (); | |
3045 | } | |
4a826962 MR |
3046 | |
3047 | void | |
3048 | dot_symbol_init (void) | |
3049 | { | |
5014c2d2 AM |
3050 | dot_symbol.name = "."; |
3051 | dot_symbol.flags.forward_ref = 1; | |
4a826962 MR |
3052 | dot_symbol.bsym = bfd_make_empty_symbol (stdoutput); |
3053 | if (dot_symbol.bsym == NULL) | |
3054 | as_fatal ("bfd_make_empty_symbol: %s", bfd_errmsg (bfd_get_error ())); | |
3055 | dot_symbol.bsym->name = "."; | |
5014c2d2 AM |
3056 | dot_symbol.x = &dot_symbol_x; |
3057 | dot_symbol.x->value.X_op = O_constant; | |
4a826962 | 3058 | } |
252b5132 RH |
3059 | \f |
3060 | int indent_level; | |
3061 | ||
3062 | /* Maximum indent level. | |
3063 | Available for modification inside a gdb session. */ | |
87c245cc | 3064 | static int max_indent_level = 8; |
252b5132 | 3065 | |
252b5132 | 3066 | void |
74937d39 | 3067 | print_symbol_value_1 (FILE *file, symbolS *sym) |
252b5132 RH |
3068 | { |
3069 | const char *name = S_GET_NAME (sym); | |
3070 | if (!name || !name[0]) | |
3071 | name = "(unnamed)"; | |
d2df793a NC |
3072 | fprintf (file, "sym "); |
3073 | fprintf_vma (file, (bfd_vma) ((bfd_hostptr_t) sym)); | |
3074 | fprintf (file, " %s", name); | |
49309057 | 3075 | |
5014c2d2 | 3076 | if (sym->flags.local_symbol) |
49309057 ILT |
3077 | { |
3078 | struct local_symbol *locsym = (struct local_symbol *) sym; | |
d2df793a | 3079 | |
5014c2d2 AM |
3080 | if (locsym->frag != &zero_address_frag |
3081 | && locsym->frag != NULL) | |
d2df793a NC |
3082 | { |
3083 | fprintf (file, " frag "); | |
5014c2d2 | 3084 | fprintf_vma (file, (bfd_vma) ((bfd_hostptr_t) locsym->frag)); |
3c0d9d71 AM |
3085 | } |
3086 | if (locsym->flags.resolved) | |
49309057 ILT |
3087 | fprintf (file, " resolved"); |
3088 | fprintf (file, " local"); | |
3089 | } | |
3090 | else | |
3091 | { | |
3c0d9d71 | 3092 | if (sym->frag != &zero_address_frag) |
d2df793a NC |
3093 | { |
3094 | fprintf (file, " frag "); | |
3c0d9d71 | 3095 | fprintf_vma (file, (bfd_vma) ((bfd_hostptr_t) sym->frag)); |
d2df793a | 3096 | } |
3c0d9d71 | 3097 | if (sym->flags.written) |
49309057 | 3098 | fprintf (file, " written"); |
3c0d9d71 | 3099 | if (sym->flags.resolved) |
49309057 | 3100 | fprintf (file, " resolved"); |
3c0d9d71 | 3101 | else if (sym->flags.resolving) |
49309057 | 3102 | fprintf (file, " resolving"); |
3c0d9d71 | 3103 | if (sym->flags.used_in_reloc) |
49309057 | 3104 | fprintf (file, " used-in-reloc"); |
3c0d9d71 | 3105 | if (sym->flags.used) |
49309057 ILT |
3106 | fprintf (file, " used"); |
3107 | if (S_IS_LOCAL (sym)) | |
3108 | fprintf (file, " local"); | |
e97b3f28 | 3109 | if (S_IS_EXTERNAL (sym)) |
49309057 | 3110 | fprintf (file, " extern"); |
06e77878 AO |
3111 | if (S_IS_WEAK (sym)) |
3112 | fprintf (file, " weak"); | |
49309057 ILT |
3113 | if (S_IS_DEBUG (sym)) |
3114 | fprintf (file, " debug"); | |
3115 | if (S_IS_DEFINED (sym)) | |
3116 | fprintf (file, " defined"); | |
3117 | } | |
06e77878 AO |
3118 | if (S_IS_WEAKREFR (sym)) |
3119 | fprintf (file, " weakrefr"); | |
3120 | if (S_IS_WEAKREFD (sym)) | |
3121 | fprintf (file, " weakrefd"); | |
252b5132 | 3122 | fprintf (file, " %s", segment_name (S_GET_SEGMENT (sym))); |
49309057 | 3123 | if (symbol_resolved_p (sym)) |
252b5132 RH |
3124 | { |
3125 | segT s = S_GET_SEGMENT (sym); | |
3126 | ||
3127 | if (s != undefined_section | |
411863a4 | 3128 | && s != expr_section) |
0af1713e | 3129 | fprintf (file, " %lx", (unsigned long) S_GET_VALUE (sym)); |
252b5132 RH |
3130 | } |
3131 | else if (indent_level < max_indent_level | |
3132 | && S_GET_SEGMENT (sym) != undefined_section) | |
3133 | { | |
3134 | indent_level++; | |
3135 | fprintf (file, "\n%*s<", indent_level * 4, ""); | |
5014c2d2 | 3136 | if (sym->flags.local_symbol) |
49309057 | 3137 | fprintf (file, "constant %lx", |
3c0d9d71 | 3138 | (unsigned long) ((struct local_symbol *) sym)->value); |
49309057 | 3139 | else |
5014c2d2 | 3140 | print_expr_1 (file, &sym->x->value); |
252b5132 RH |
3141 | fprintf (file, ">"); |
3142 | indent_level--; | |
3143 | } | |
3144 | fflush (file); | |
3145 | } | |
3146 | ||
3147 | void | |
74937d39 | 3148 | print_symbol_value (symbolS *sym) |
252b5132 RH |
3149 | { |
3150 | indent_level = 0; | |
3151 | print_symbol_value_1 (stderr, sym); | |
3152 | fprintf (stderr, "\n"); | |
3153 | } | |
3154 | ||
3155 | static void | |
74937d39 | 3156 | print_binary (FILE *file, const char *name, expressionS *exp) |
252b5132 RH |
3157 | { |
3158 | indent_level++; | |
3159 | fprintf (file, "%s\n%*s<", name, indent_level * 4, ""); | |
3160 | print_symbol_value_1 (file, exp->X_add_symbol); | |
3161 | fprintf (file, ">\n%*s<", indent_level * 4, ""); | |
3162 | print_symbol_value_1 (file, exp->X_op_symbol); | |
3163 | fprintf (file, ">"); | |
3164 | indent_level--; | |
3165 | } | |
3166 | ||
3167 | void | |
74937d39 | 3168 | print_expr_1 (FILE *file, expressionS *exp) |
252b5132 | 3169 | { |
d2df793a NC |
3170 | fprintf (file, "expr "); |
3171 | fprintf_vma (file, (bfd_vma) ((bfd_hostptr_t) exp)); | |
3172 | fprintf (file, " "); | |
252b5132 RH |
3173 | switch (exp->X_op) |
3174 | { | |
3175 | case O_illegal: | |
3176 | fprintf (file, "illegal"); | |
3177 | break; | |
3178 | case O_absent: | |
3179 | fprintf (file, "absent"); | |
3180 | break; | |
3181 | case O_constant: | |
0af1713e | 3182 | fprintf (file, "constant %lx", (unsigned long) exp->X_add_number); |
252b5132 RH |
3183 | break; |
3184 | case O_symbol: | |
3185 | indent_level++; | |
3186 | fprintf (file, "symbol\n%*s<", indent_level * 4, ""); | |
3187 | print_symbol_value_1 (file, exp->X_add_symbol); | |
3188 | fprintf (file, ">"); | |
3189 | maybe_print_addnum: | |
3190 | if (exp->X_add_number) | |
3191 | fprintf (file, "\n%*s%lx", indent_level * 4, "", | |
0af1713e | 3192 | (unsigned long) exp->X_add_number); |
252b5132 RH |
3193 | indent_level--; |
3194 | break; | |
3195 | case O_register: | |
3196 | fprintf (file, "register #%d", (int) exp->X_add_number); | |
3197 | break; | |
3198 | case O_big: | |
3199 | fprintf (file, "big"); | |
3200 | break; | |
3201 | case O_uminus: | |
3202 | fprintf (file, "uminus -<"); | |
3203 | indent_level++; | |
3204 | print_symbol_value_1 (file, exp->X_add_symbol); | |
3205 | fprintf (file, ">"); | |
3206 | goto maybe_print_addnum; | |
3207 | case O_bit_not: | |
3208 | fprintf (file, "bit_not"); | |
3209 | break; | |
3210 | case O_multiply: | |
3211 | print_binary (file, "multiply", exp); | |
3212 | break; | |
3213 | case O_divide: | |
3214 | print_binary (file, "divide", exp); | |
3215 | break; | |
3216 | case O_modulus: | |
3217 | print_binary (file, "modulus", exp); | |
3218 | break; | |
3219 | case O_left_shift: | |
3220 | print_binary (file, "lshift", exp); | |
3221 | break; | |
3222 | case O_right_shift: | |
3223 | print_binary (file, "rshift", exp); | |
3224 | break; | |
3225 | case O_bit_inclusive_or: | |
3226 | print_binary (file, "bit_ior", exp); | |
3227 | break; | |
3228 | case O_bit_exclusive_or: | |
3229 | print_binary (file, "bit_xor", exp); | |
3230 | break; | |
3231 | case O_bit_and: | |
3232 | print_binary (file, "bit_and", exp); | |
3233 | break; | |
3234 | case O_eq: | |
3235 | print_binary (file, "eq", exp); | |
3236 | break; | |
3237 | case O_ne: | |
3238 | print_binary (file, "ne", exp); | |
3239 | break; | |
3240 | case O_lt: | |
3241 | print_binary (file, "lt", exp); | |
3242 | break; | |
3243 | case O_le: | |
3244 | print_binary (file, "le", exp); | |
3245 | break; | |
3246 | case O_ge: | |
3247 | print_binary (file, "ge", exp); | |
3248 | break; | |
3249 | case O_gt: | |
3250 | print_binary (file, "gt", exp); | |
3251 | break; | |
3252 | case O_logical_and: | |
3253 | print_binary (file, "logical_and", exp); | |
3254 | break; | |
3255 | case O_logical_or: | |
3256 | print_binary (file, "logical_or", exp); | |
3257 | break; | |
3258 | case O_add: | |
3259 | indent_level++; | |
3260 | fprintf (file, "add\n%*s<", indent_level * 4, ""); | |
3261 | print_symbol_value_1 (file, exp->X_add_symbol); | |
3262 | fprintf (file, ">\n%*s<", indent_level * 4, ""); | |
3263 | print_symbol_value_1 (file, exp->X_op_symbol); | |
3264 | fprintf (file, ">"); | |
3265 | goto maybe_print_addnum; | |
3266 | case O_subtract: | |
3267 | indent_level++; | |
3268 | fprintf (file, "subtract\n%*s<", indent_level * 4, ""); | |
3269 | print_symbol_value_1 (file, exp->X_add_symbol); | |
3270 | fprintf (file, ">\n%*s<", indent_level * 4, ""); | |
3271 | print_symbol_value_1 (file, exp->X_op_symbol); | |
3272 | fprintf (file, ">"); | |
3273 | goto maybe_print_addnum; | |
3274 | default: | |
3275 | fprintf (file, "{unknown opcode %d}", (int) exp->X_op); | |
3276 | break; | |
3277 | } | |
3278 | fflush (stdout); | |
3279 | } | |
3280 | ||
3281 | void | |
74937d39 | 3282 | print_expr (expressionS *exp) |
252b5132 RH |
3283 | { |
3284 | print_expr_1 (stderr, exp); | |
3285 | fprintf (stderr, "\n"); | |
3286 | } | |
3287 | ||
3288 | void | |
74937d39 | 3289 | symbol_print_statistics (FILE *file) |
252b5132 | 3290 | { |
d3b740ca | 3291 | htab_print_statistics (file, "symbol table", sy_hash); |
49309057 ILT |
3292 | fprintf (file, "%lu mini local symbols created, %lu converted\n", |
3293 | local_symbol_count, local_symbol_conversion_count); | |
252b5132 | 3294 | } |
280d71bf DB |
3295 | |
3296 | #ifdef OBJ_COMPLEX_RELC | |
3297 | ||
3298 | /* Convert given symbol to a new complex-relocation symbol name. This | |
6f12865c | 3299 | may be a recursive function, since it might be called for non-leaf |
280d71bf | 3300 | nodes (plain symbols) in the expression tree. The caller owns the |
6f12865c AM |
3301 | returning string, so should free it eventually. Errors are |
3302 | indicated via as_bad and a NULL return value. The given symbol | |
3c0d9d71 | 3303 | is marked with used_in_reloc. */ |
280d71bf DB |
3304 | |
3305 | char * | |
3306 | symbol_relc_make_sym (symbolS * sym) | |
3307 | { | |
3308 | char * terminal = NULL; | |
3309 | const char * sname; | |
3310 | char typetag; | |
3311 | int sname_len; | |
3312 | ||
9c2799c2 | 3313 | gas_assert (sym != NULL); |
280d71bf DB |
3314 | |
3315 | /* Recurse to symbol_relc_make_expr if this symbol | |
3316 | is defined as an expression or a plain value. */ | |
3317 | if ( S_GET_SEGMENT (sym) == expr_section | |
3318 | || S_GET_SEGMENT (sym) == absolute_section) | |
be0d3bbb | 3319 | return symbol_relc_make_expr (symbol_get_value_expression (sym)); |
280d71bf | 3320 | |
2469b3c5 | 3321 | /* This may be a "fake symbol", referring to ".". |
280d71bf DB |
3322 | Write out a special null symbol to refer to this position. */ |
3323 | if (! strcmp (S_GET_NAME (sym), FAKE_LABEL_NAME)) | |
3324 | return xstrdup ("."); | |
3325 | ||
3326 | /* We hope this is a plain leaf symbol. Construct the encoding | |
3327 | as {S,s}II...:CCCCCCC.... | |
3328 | where 'S'/'s' means section symbol / plain symbol | |
3329 | III is decimal for the symbol name length | |
3330 | CCC is the symbol name itself. */ | |
3331 | symbol_mark_used_in_reloc (sym); | |
3332 | ||
3333 | sname = S_GET_NAME (sym); | |
3334 | sname_len = strlen (sname); | |
3335 | typetag = symbol_section_p (sym) ? 'S' : 's'; | |
3336 | ||
add39d23 TS |
3337 | terminal = XNEWVEC (char, (1 /* S or s */ |
3338 | + 8 /* sname_len in decimal */ | |
3339 | + 1 /* _ spacer */ | |
3340 | + sname_len /* name itself */ | |
3341 | + 1 /* \0 */ )); | |
280d71bf DB |
3342 | |
3343 | sprintf (terminal, "%c%d:%s", typetag, sname_len, sname); | |
3344 | return terminal; | |
3345 | } | |
3346 | ||
3347 | /* Convert given value to a new complex-relocation symbol name. This | |
3348 | is a non-recursive function, since it is be called for leaf nodes | |
3349 | (plain values) in the expression tree. The caller owns the | |
3350 | returning string, so should free() it eventually. No errors. */ | |
3351 | ||
3352 | char * | |
3353 | symbol_relc_make_value (offsetT val) | |
3354 | { | |
325801bd | 3355 | char * terminal = XNEWVEC (char, 28); /* Enough for long long. */ |
280d71bf DB |
3356 | |
3357 | terminal[0] = '#'; | |
1a412f5f | 3358 | bfd_sprintf_vma (stdoutput, terminal + 1, val); |
280d71bf DB |
3359 | return terminal; |
3360 | } | |
3361 | ||
3362 | /* Convert given expression to a new complex-relocation symbol name. | |
3363 | This is a recursive function, since it traverses the entire given | |
3364 | expression tree. The caller owns the returning string, so should | |
3365 | free() it eventually. Errors are indicated via as_bad() and a NULL | |
3366 | return value. */ | |
3367 | ||
3368 | char * | |
3369 | symbol_relc_make_expr (expressionS * exp) | |
3370 | { | |
b9bb4a93 | 3371 | const char * opstr = NULL; /* Operator prefix string. */ |
280d71bf DB |
3372 | int arity = 0; /* Arity of this operator. */ |
3373 | char * operands[3]; /* Up to three operands. */ | |
3374 | char * concat_string = NULL; | |
3375 | ||
3376 | operands[0] = operands[1] = operands[2] = NULL; | |
3377 | ||
9c2799c2 | 3378 | gas_assert (exp != NULL); |
280d71bf DB |
3379 | |
3380 | /* Match known operators -> fill in opstr, arity, operands[] and fall | |
34bca508 | 3381 | through to construct subexpression fragments; may instead return |
280d71bf DB |
3382 | string directly for leaf nodes. */ |
3383 | ||
34bca508 | 3384 | /* See expr.h for the meaning of all these enums. Many operators |
280d71bf DB |
3385 | have an unnatural arity (X_add_number implicitly added). The |
3386 | conversion logic expands them to explicit "+" subexpressions. */ | |
3387 | ||
3388 | switch (exp->X_op) | |
3389 | { | |
3390 | default: | |
3391 | as_bad ("Unknown expression operator (enum %d)", exp->X_op); | |
3392 | break; | |
3393 | ||
3394 | /* Leaf nodes. */ | |
3395 | case O_constant: | |
3396 | return symbol_relc_make_value (exp->X_add_number); | |
3397 | ||
3398 | case O_symbol: | |
34bca508 L |
3399 | if (exp->X_add_number) |
3400 | { | |
3401 | arity = 2; | |
3402 | opstr = "+"; | |
280d71bf DB |
3403 | operands[0] = symbol_relc_make_sym (exp->X_add_symbol); |
3404 | operands[1] = symbol_relc_make_value (exp->X_add_number); | |
3405 | break; | |
3406 | } | |
3407 | else | |
3408 | return symbol_relc_make_sym (exp->X_add_symbol); | |
3409 | ||
3410 | /* Helper macros for nesting nodes. */ | |
3411 | ||
3c0d9d71 | 3412 | #define HANDLE_XADD_OPT1(str_) \ |
280d71bf | 3413 | if (exp->X_add_number) \ |
3c0d9d71 AM |
3414 | { \ |
3415 | arity = 2; \ | |
3416 | opstr = "+:" str_; \ | |
3417 | operands[0] = symbol_relc_make_sym (exp->X_add_symbol); \ | |
3418 | operands[1] = symbol_relc_make_value (exp->X_add_number); \ | |
3419 | break; \ | |
3420 | } \ | |
280d71bf | 3421 | else \ |
3c0d9d71 AM |
3422 | { \ |
3423 | arity = 1; \ | |
3424 | opstr = str_; \ | |
3425 | operands[0] = symbol_relc_make_sym (exp->X_add_symbol); \ | |
3426 | } \ | |
280d71bf | 3427 | break |
34bca508 | 3428 | |
3c0d9d71 | 3429 | #define HANDLE_XADD_OPT2(str_) \ |
280d71bf | 3430 | if (exp->X_add_number) \ |
3c0d9d71 AM |
3431 | { \ |
3432 | arity = 3; \ | |
3433 | opstr = "+:" str_; \ | |
3434 | operands[0] = symbol_relc_make_sym (exp->X_add_symbol); \ | |
3435 | operands[1] = symbol_relc_make_sym (exp->X_op_symbol); \ | |
3436 | operands[2] = symbol_relc_make_value (exp->X_add_number); \ | |
3437 | } \ | |
280d71bf | 3438 | else \ |
3c0d9d71 AM |
3439 | { \ |
3440 | arity = 2; \ | |
3441 | opstr = str_; \ | |
3442 | operands[0] = symbol_relc_make_sym (exp->X_add_symbol); \ | |
3443 | operands[1] = symbol_relc_make_sym (exp->X_op_symbol); \ | |
3444 | } \ | |
280d71bf DB |
3445 | break |
3446 | ||
3447 | /* Nesting nodes. */ | |
3448 | ||
3c0d9d71 AM |
3449 | case O_uminus: HANDLE_XADD_OPT1 ("0-"); |
3450 | case O_bit_not: HANDLE_XADD_OPT1 ("~"); | |
3451 | case O_logical_not: HANDLE_XADD_OPT1 ("!"); | |
3452 | case O_multiply: HANDLE_XADD_OPT2 ("*"); | |
3453 | case O_divide: HANDLE_XADD_OPT2 ("/"); | |
3454 | case O_modulus: HANDLE_XADD_OPT2 ("%"); | |
3455 | case O_left_shift: HANDLE_XADD_OPT2 ("<<"); | |
3456 | case O_right_shift: HANDLE_XADD_OPT2 (">>"); | |
280d71bf DB |
3457 | case O_bit_inclusive_or: HANDLE_XADD_OPT2 ("|"); |
3458 | case O_bit_exclusive_or: HANDLE_XADD_OPT2 ("^"); | |
3c0d9d71 AM |
3459 | case O_bit_and: HANDLE_XADD_OPT2 ("&"); |
3460 | case O_add: HANDLE_XADD_OPT2 ("+"); | |
3461 | case O_subtract: HANDLE_XADD_OPT2 ("-"); | |
3462 | case O_eq: HANDLE_XADD_OPT2 ("=="); | |
3463 | case O_ne: HANDLE_XADD_OPT2 ("!="); | |
3464 | case O_lt: HANDLE_XADD_OPT2 ("<"); | |
3465 | case O_le: HANDLE_XADD_OPT2 ("<="); | |
3466 | case O_ge: HANDLE_XADD_OPT2 (">="); | |
3467 | case O_gt: HANDLE_XADD_OPT2 (">"); | |
3468 | case O_logical_and: HANDLE_XADD_OPT2 ("&&"); | |
3469 | case O_logical_or: HANDLE_XADD_OPT2 ("||"); | |
280d71bf DB |
3470 | } |
3471 | ||
3472 | /* Validate & reject early. */ | |
3473 | if (arity >= 1 && ((operands[0] == NULL) || (strlen (operands[0]) == 0))) | |
3474 | opstr = NULL; | |
3475 | if (arity >= 2 && ((operands[1] == NULL) || (strlen (operands[1]) == 0))) | |
3476 | opstr = NULL; | |
3477 | if (arity >= 3 && ((operands[2] == NULL) || (strlen (operands[2]) == 0))) | |
3478 | opstr = NULL; | |
3479 | ||
3480 | if (opstr == NULL) | |
3481 | concat_string = NULL; | |
29a2809e TS |
3482 | else if (arity == 0) |
3483 | concat_string = xstrdup (opstr); | |
3484 | else if (arity == 1) | |
3485 | concat_string = concat (opstr, ":", operands[0], (char *) NULL); | |
3486 | else if (arity == 2) | |
3487 | concat_string = concat (opstr, ":", operands[0], ":", operands[1], | |
3488 | (char *) NULL); | |
280d71bf | 3489 | else |
29a2809e TS |
3490 | concat_string = concat (opstr, ":", operands[0], ":", operands[1], ":", |
3491 | operands[2], (char *) NULL); | |
280d71bf DB |
3492 | |
3493 | /* Free operand strings (not opstr). */ | |
3494 | if (arity >= 1) xfree (operands[0]); | |
3495 | if (arity >= 2) xfree (operands[1]); | |
3496 | if (arity >= 3) xfree (operands[2]); | |
3497 | ||
3498 | return concat_string; | |
3499 | } | |
3500 | ||
3501 | #endif |