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252b5132 | 1 | /* symbols.c -symbol table- |
250d07de | 2 | Copyright (C) 1987-2021 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; | |
8d1015a8 AM |
85 | }; |
86 | ||
87 | /* A pointer in the symbol may point to either a complete symbol | |
3c0d9d71 | 88 | (struct symbol below) or to a local symbol (struct local_symbol |
8d1015a8 | 89 | defined here). The symbol code can detect the case by examining |
2a50b401 | 90 | the first field which is present in both structs. |
8d1015a8 AM |
91 | |
92 | We do this because we ordinarily only need a small amount of | |
93 | information for a local symbol. The symbol table takes up a lot of | |
94 | space, and storing less information for a local symbol can make a | |
95 | big difference in assembler memory usage when assembling a large | |
96 | file. */ | |
97 | ||
98 | struct local_symbol | |
99 | { | |
3c0d9d71 AM |
100 | /* Symbol flags. Only local_symbol and resolved are relevant. */ |
101 | struct symbol_flags flags; | |
8d1015a8 | 102 | |
5014c2d2 AM |
103 | /* Hash value calculated from name. */ |
104 | hashval_t hash; | |
8d1015a8 AM |
105 | |
106 | /* The symbol name. */ | |
3c0d9d71 | 107 | const char *name; |
8d1015a8 | 108 | |
5014c2d2 AM |
109 | /* The symbol frag. */ |
110 | fragS *frag; | |
111 | ||
112 | /* The symbol section. */ | |
113 | asection *section; | |
8d1015a8 AM |
114 | |
115 | /* The value of the symbol. */ | |
3c0d9d71 AM |
116 | valueT value; |
117 | }; | |
8d1015a8 | 118 | |
5014c2d2 AM |
119 | /* The information we keep for a symbol. The symbol table holds |
120 | pointers both to this and to local_symbol structures. The first | |
121 | three fields must be identical to struct local_symbol, and the size | |
122 | should be the same as or smaller than struct local_symbol. | |
123 | Fields that don't fit go to an extension structure. */ | |
3c0d9d71 AM |
124 | |
125 | struct symbol | |
126 | { | |
127 | /* Symbol flags. */ | |
128 | struct symbol_flags flags; | |
129 | ||
5014c2d2 AM |
130 | /* Hash value calculated from name. */ |
131 | hashval_t hash; | |
132 | ||
133 | /* The symbol name. */ | |
134 | const char *name; | |
135 | ||
136 | /* Pointer to the frag this symbol is attached to, if any. | |
137 | Otherwise, NULL. */ | |
138 | fragS *frag; | |
139 | ||
3c0d9d71 AM |
140 | /* BFD symbol */ |
141 | asymbol *bsym; | |
142 | ||
5014c2d2 AM |
143 | /* Extra symbol fields that won't fit. */ |
144 | struct xsymbol *x; | |
145 | }; | |
146 | ||
147 | /* Extra fields to make up a full symbol. */ | |
148 | ||
149 | struct xsymbol | |
150 | { | |
3c0d9d71 AM |
151 | /* The value of the symbol. */ |
152 | expressionS value; | |
153 | ||
154 | /* Forwards and backwards chain pointers. */ | |
155 | struct symbol *next; | |
156 | struct symbol *previous; | |
157 | ||
3c0d9d71 AM |
158 | #ifdef OBJ_SYMFIELD_TYPE |
159 | OBJ_SYMFIELD_TYPE obj; | |
160 | #endif | |
161 | ||
162 | #ifdef TC_SYMFIELD_TYPE | |
163 | TC_SYMFIELD_TYPE tc; | |
8d1015a8 AM |
164 | #endif |
165 | }; | |
166 | ||
5014c2d2 | 167 | typedef union symbol_entry |
d3b740ca | 168 | { |
5014c2d2 AM |
169 | struct local_symbol lsy; |
170 | struct symbol sy; | |
171 | } symbol_entry_t; | |
d3b740ca ML |
172 | |
173 | /* Hash function for a symbol_entry. */ | |
174 | ||
175 | static hashval_t | |
176 | hash_symbol_entry (const void *e) | |
177 | { | |
178 | symbol_entry_t *entry = (symbol_entry_t *) e; | |
5014c2d2 AM |
179 | if (entry->sy.hash == 0) |
180 | entry->sy.hash = htab_hash_string (entry->sy.name); | |
d3b740ca | 181 | |
5014c2d2 | 182 | return entry->sy.hash; |
d3b740ca ML |
183 | } |
184 | ||
185 | /* Equality function for a symbol_entry. */ | |
186 | ||
187 | static int | |
188 | eq_symbol_entry (const void *a, const void *b) | |
189 | { | |
190 | const symbol_entry_t *ea = (const symbol_entry_t *) a; | |
191 | const symbol_entry_t *eb = (const symbol_entry_t *) b; | |
192 | ||
5014c2d2 AM |
193 | return (ea->sy.hash == eb->sy.hash |
194 | && strcmp (ea->sy.name, eb->sy.name) == 0); | |
d3b740ca ML |
195 | } |
196 | ||
197 | static void * | |
5014c2d2 | 198 | symbol_entry_find (htab_t table, const char *name) |
d3b740ca | 199 | { |
5014c2d2 | 200 | hashval_t hash = htab_hash_string (name); |
eb09df16 | 201 | symbol_entry_t needle = { { { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }, |
e37c930f | 202 | hash, name, 0, 0, 0 } }; |
5014c2d2 | 203 | return htab_find_with_hash (table, &needle, hash); |
d3b740ca ML |
204 | } |
205 | ||
206 | ||
252b5132 RH |
207 | /* This is non-zero if symbols are case sensitive, which is the |
208 | default. */ | |
209 | int symbols_case_sensitive = 1; | |
210 | ||
211 | #ifndef WORKING_DOT_WORD | |
212 | extern int new_broken_words; | |
213 | #endif | |
214 | ||
d3b740ca | 215 | static htab_t sy_hash; |
252b5132 | 216 | |
7c743825 | 217 | /* Below are commented in "symbols.h". */ |
252b5132 RH |
218 | symbolS *symbol_rootP; |
219 | symbolS *symbol_lastP; | |
220 | symbolS abs_symbol; | |
5014c2d2 | 221 | struct xsymbol abs_symbol_x; |
4a826962 | 222 | symbolS dot_symbol; |
5014c2d2 | 223 | struct xsymbol dot_symbol_x; |
252b5132 RH |
224 | |
225 | #ifdef DEBUG_SYMS | |
226 | #define debug_verify_symchain verify_symbol_chain | |
227 | #else | |
228 | #define debug_verify_symchain(root, last) ((void) 0) | |
229 | #endif | |
230 | ||
aa257fcd NC |
231 | #define DOLLAR_LABEL_CHAR '\001' |
232 | #define LOCAL_LABEL_CHAR '\002' | |
233 | ||
df58fc94 RS |
234 | #ifndef TC_LABEL_IS_LOCAL |
235 | #define TC_LABEL_IS_LOCAL(name) 0 | |
236 | #endif | |
237 | ||
252b5132 | 238 | struct obstack notes; |
22ba0981 | 239 | #ifdef TE_PE |
977cdf5a NC |
240 | /* The name of an external symbol which is |
241 | used to make weak PE symbol names unique. */ | |
242 | const char * an_external_name; | |
243 | #endif | |
252b5132 | 244 | |
b9bb4a93 | 245 | static const char *save_symbol_name (const char *); |
74937d39 KH |
246 | static void fb_label_init (void); |
247 | static long dollar_label_instance (long); | |
248 | static long fb_label_instance (long); | |
252b5132 | 249 | |
74937d39 | 250 | static void print_binary (FILE *, const char *, expressionS *); |
252b5132 | 251 | |
7c743825 | 252 | /* Return a pointer to a new symbol. Die if we can't make a new |
252b5132 RH |
253 | symbol. Fill in the symbol's values. Add symbol to end of symbol |
254 | chain. | |
7c743825 | 255 | |
252b5132 RH |
256 | This function should be called in the general case of creating a |
257 | symbol. However, if the output file symbol table has already been | |
258 | set, and you are certain that this symbol won't be wanted in the | |
259 | output file, you can call symbol_create. */ | |
260 | ||
261 | symbolS * | |
e01e1cee | 262 | symbol_new (const char *name, segT segment, fragS *frag, valueT valu) |
252b5132 | 263 | { |
e01e1cee | 264 | symbolS *symbolP = symbol_create (name, segment, frag, valu); |
252b5132 | 265 | |
7c743825 | 266 | /* Link to end of symbol chain. */ |
252b5132 RH |
267 | symbol_append (symbolP, symbol_lastP, &symbol_rootP, &symbol_lastP); |
268 | ||
269 | return symbolP; | |
270 | } | |
271 | ||
49309057 ILT |
272 | /* Save a symbol name on a permanent obstack, and convert it according |
273 | to the object file format. */ | |
274 | ||
b9bb4a93 | 275 | static const char * |
74937d39 | 276 | save_symbol_name (const char *name) |
252b5132 | 277 | { |
e57e6ddc | 278 | size_t name_length; |
49309057 | 279 | char *ret; |
252b5132 | 280 | |
0df8ad28 | 281 | gas_assert (name != NULL); |
7c743825 | 282 | name_length = strlen (name) + 1; /* +1 for \0. */ |
252b5132 | 283 | obstack_grow (¬es, name, name_length); |
1e9cc1c2 | 284 | ret = (char *) obstack_finish (¬es); |
49309057 | 285 | |
252b5132 | 286 | #ifdef tc_canonicalize_symbol_name |
49309057 | 287 | ret = tc_canonicalize_symbol_name (ret); |
252b5132 RH |
288 | #endif |
289 | ||
290 | if (! symbols_case_sensitive) | |
291 | { | |
3882b010 | 292 | char *s; |
252b5132 | 293 | |
3882b010 L |
294 | for (s = ret; *s != '\0'; s++) |
295 | *s = TOUPPER (*s); | |
252b5132 RH |
296 | } |
297 | ||
49309057 ILT |
298 | return ret; |
299 | } | |
300 | ||
5014c2d2 AM |
301 | static void |
302 | symbol_init (symbolS *symbolP, const char *name, asection *sec, | |
303 | fragS *frag, valueT valu) | |
49309057 | 304 | { |
5014c2d2 | 305 | symbolP->frag = frag; |
252b5132 RH |
306 | symbolP->bsym = bfd_make_empty_symbol (stdoutput); |
307 | if (symbolP->bsym == NULL) | |
885afe7b | 308 | as_fatal ("bfd_make_empty_symbol: %s", bfd_errmsg (bfd_get_error ())); |
5014c2d2 AM |
309 | symbolP->bsym->name = name; |
310 | symbolP->bsym->section = sec; | |
252b5132 | 311 | |
252b5132 | 312 | S_SET_VALUE (symbolP, valu); |
252b5132 | 313 | |
5014c2d2 | 314 | symbol_clear_list_pointers (symbolP); |
252b5132 RH |
315 | |
316 | obj_symbol_new_hook (symbolP); | |
317 | ||
318 | #ifdef tc_symbol_new_hook | |
319 | tc_symbol_new_hook (symbolP); | |
320 | #endif | |
5014c2d2 AM |
321 | } |
322 | ||
323 | /* Create a symbol. NAME is copied, the caller can destroy/modify. */ | |
324 | ||
325 | symbolS * | |
326 | symbol_create (const char *name, segT segment, fragS *frag, valueT valu) | |
327 | { | |
328 | const char *preserved_copy_of_name; | |
329 | symbolS *symbolP; | |
330 | size_t size; | |
331 | ||
332 | preserved_copy_of_name = save_symbol_name (name); | |
333 | ||
334 | size = sizeof (symbolS) + sizeof (struct xsymbol); | |
335 | symbolP = (symbolS *) obstack_alloc (¬es, size); | |
336 | ||
337 | /* symbol must be born in some fixed state. This seems as good as any. */ | |
338 | memset (symbolP, 0, size); | |
339 | symbolP->name = preserved_copy_of_name; | |
340 | symbolP->x = (struct xsymbol *) (symbolP + 1); | |
341 | ||
342 | symbol_init (symbolP, preserved_copy_of_name, segment, frag, valu); | |
252b5132 RH |
343 | |
344 | return symbolP; | |
345 | } | |
346 | \f | |
49309057 ILT |
347 | |
348 | /* Local symbol support. If we can get away with it, we keep only a | |
349 | small amount of information for local symbols. */ | |
350 | ||
49309057 ILT |
351 | /* Used for statistics. */ |
352 | ||
353 | static unsigned long local_symbol_count; | |
354 | static unsigned long local_symbol_conversion_count; | |
355 | ||
49309057 ILT |
356 | /* Create a local symbol and insert it into the local hash table. */ |
357 | ||
00ce9deb | 358 | struct local_symbol * |
e01e1cee | 359 | local_symbol_make (const char *name, segT section, fragS *frag, valueT val) |
49309057 | 360 | { |
b9bb4a93 | 361 | const char *name_copy; |
49309057 | 362 | struct local_symbol *ret; |
3c0d9d71 | 363 | struct symbol_flags flags = { .local_symbol = 1, .resolved = 0 }; |
49309057 ILT |
364 | |
365 | ++local_symbol_count; | |
366 | ||
367 | name_copy = save_symbol_name (name); | |
368 | ||
1e9cc1c2 | 369 | ret = (struct local_symbol *) obstack_alloc (¬es, sizeof *ret); |
3c0d9d71 | 370 | ret->flags = flags; |
5014c2d2 | 371 | ret->hash = 0; |
3c0d9d71 | 372 | ret->name = name_copy; |
5014c2d2 | 373 | ret->frag = frag; |
3c0d9d71 | 374 | ret->section = section; |
3c0d9d71 | 375 | ret->value = val; |
49309057 | 376 | |
fe0e921f | 377 | htab_insert (sy_hash, ret, 1); |
49309057 ILT |
378 | |
379 | return ret; | |
380 | } | |
381 | ||
5014c2d2 | 382 | /* Convert a local symbol into a real symbol. */ |
49309057 ILT |
383 | |
384 | static symbolS * | |
5014c2d2 | 385 | local_symbol_convert (void *sym) |
49309057 | 386 | { |
5014c2d2 AM |
387 | symbol_entry_t *ent = (symbol_entry_t *) sym; |
388 | struct xsymbol *xtra; | |
389 | valueT val; | |
49309057 | 390 | |
5014c2d2 | 391 | gas_assert (ent->lsy.flags.local_symbol); |
49309057 ILT |
392 | |
393 | ++local_symbol_conversion_count; | |
394 | ||
85d14aae AM |
395 | xtra = (struct xsymbol *) obstack_alloc (¬es, sizeof (*xtra)); |
396 | memset (xtra, 0, sizeof (*xtra)); | |
5014c2d2 AM |
397 | val = ent->lsy.value; |
398 | ent->sy.x = xtra; | |
49309057 ILT |
399 | |
400 | /* Local symbols are always either defined or used. */ | |
5014c2d2 AM |
401 | ent->sy.flags.used = 1; |
402 | ent->sy.flags.local_symbol = 0; | |
49309057 | 403 | |
5014c2d2 AM |
404 | symbol_init (&ent->sy, ent->lsy.name, ent->lsy.section, ent->lsy.frag, val); |
405 | symbol_append (&ent->sy, symbol_lastP, &symbol_rootP, &symbol_lastP); | |
49309057 | 406 | |
5014c2d2 | 407 | return &ent->sy; |
49309057 | 408 | } |
49309057 | 409 | \f |
a3371076 AM |
410 | static void |
411 | define_sym_at_dot (symbolS *symbolP) | |
412 | { | |
3c0d9d71 | 413 | symbolP->frag = frag_now; |
a3371076 AM |
414 | S_SET_VALUE (symbolP, (valueT) frag_now_fix ()); |
415 | S_SET_SEGMENT (symbolP, now_seg); | |
416 | } | |
417 | ||
7c743825 KH |
418 | /* We have just seen "<name>:". |
419 | Creates a struct symbol unless it already exists. | |
420 | ||
421 | Gripes if we are redefining a symbol incompatibly (and ignores it). */ | |
252b5132 | 422 | |
252b5132 | 423 | symbolS * |
74937d39 | 424 | colon (/* Just seen "x:" - rattle symbols & frags. */ |
2b0f3761 | 425 | const char *sym_name /* Symbol name, as a canonical string. */ |
74937d39 | 426 | /* We copy this string: OK to alter later. */) |
252b5132 | 427 | { |
ed9e98c2 | 428 | symbolS *symbolP; /* Symbol we are working with. */ |
252b5132 | 429 | |
7cf10893 | 430 | /* Sun local labels go out of scope whenever a non-local symbol is |
252b5132 | 431 | defined. */ |
7be1c489 AM |
432 | if (LOCAL_LABELS_DOLLAR |
433 | && !bfd_is_local_label_name (stdoutput, sym_name)) | |
434 | dollar_label_clear (); | |
252b5132 RH |
435 | |
436 | #ifndef WORKING_DOT_WORD | |
437 | if (new_broken_words) | |
438 | { | |
439 | struct broken_word *a; | |
440 | int possible_bytes; | |
441 | fragS *frag_tmp; | |
442 | char *frag_opcode; | |
443 | ||
7cf10893 NC |
444 | if (now_seg == absolute_section) |
445 | { | |
446 | as_bad (_("cannot define symbol `%s' in absolute section"), sym_name); | |
447 | return NULL; | |
448 | } | |
1d3b2b27 | 449 | |
252b5132 RH |
450 | possible_bytes = (md_short_jump_size |
451 | + new_broken_words * md_long_jump_size); | |
452 | ||
453 | frag_tmp = frag_now; | |
454 | frag_opcode = frag_var (rs_broken_word, | |
455 | possible_bytes, | |
456 | possible_bytes, | |
457 | (relax_substateT) 0, | |
458 | (symbolS *) broken_words, | |
459 | (offsetT) 0, | |
460 | NULL); | |
461 | ||
7c743825 KH |
462 | /* We want to store the pointer to where to insert the jump |
463 | table in the fr_opcode of the rs_broken_word frag. This | |
464 | requires a little hackery. */ | |
252b5132 RH |
465 | while (frag_tmp |
466 | && (frag_tmp->fr_type != rs_broken_word | |
467 | || frag_tmp->fr_opcode)) | |
468 | frag_tmp = frag_tmp->fr_next; | |
469 | know (frag_tmp); | |
470 | frag_tmp->fr_opcode = frag_opcode; | |
471 | new_broken_words = 0; | |
472 | ||
473 | for (a = broken_words; a && a->dispfrag == 0; a = a->next_broken_word) | |
474 | a->dispfrag = frag_tmp; | |
475 | } | |
476 | #endif /* WORKING_DOT_WORD */ | |
477 | ||
cdaa5616 IS |
478 | #ifdef obj_frob_colon |
479 | obj_frob_colon (sym_name); | |
480 | #endif | |
481 | ||
252b5132 RH |
482 | if ((symbolP = symbol_find (sym_name)) != 0) |
483 | { | |
06e77878 | 484 | S_CLEAR_WEAKREFR (symbolP); |
252b5132 RH |
485 | #ifdef RESOLVE_SYMBOL_REDEFINITION |
486 | if (RESOLVE_SYMBOL_REDEFINITION (symbolP)) | |
487 | return symbolP; | |
488 | #endif | |
7c743825 | 489 | /* Now check for undefined symbols. */ |
5014c2d2 | 490 | if (symbolP->flags.local_symbol) |
49309057 ILT |
491 | { |
492 | struct local_symbol *locsym = (struct local_symbol *) symbolP; | |
493 | ||
3c0d9d71 | 494 | if (locsym->section != undefined_section |
5014c2d2 | 495 | && (locsym->frag != frag_now |
3c0d9d71 AM |
496 | || locsym->section != now_seg |
497 | || locsym->value != frag_now_fix ())) | |
49309057 | 498 | { |
0e389e77 | 499 | as_bad (_("symbol `%s' is already defined"), sym_name); |
49309057 ILT |
500 | return symbolP; |
501 | } | |
502 | ||
3c0d9d71 | 503 | locsym->section = now_seg; |
5014c2d2 | 504 | locsym->frag = frag_now; |
3c0d9d71 | 505 | locsym->value = frag_now_fix (); |
49309057 | 506 | } |
b54788f8 | 507 | else if (!(S_IS_DEFINED (symbolP) || symbol_equated_p (symbolP)) |
92757bc9 JB |
508 | || S_IS_COMMON (symbolP) |
509 | || S_IS_VOLATILE (symbolP)) | |
252b5132 | 510 | { |
89cdfe57 | 511 | if (S_IS_VOLATILE (symbolP)) |
92757bc9 JB |
512 | { |
513 | symbolP = symbol_clone (symbolP, 1); | |
514 | S_SET_VALUE (symbolP, 0); | |
515 | S_CLEAR_VOLATILE (symbolP); | |
516 | } | |
252b5132 RH |
517 | if (S_GET_VALUE (symbolP) == 0) |
518 | { | |
a3371076 | 519 | define_sym_at_dot (symbolP); |
252b5132 RH |
520 | #ifdef N_UNDF |
521 | know (N_UNDF == 0); | |
7c743825 | 522 | #endif /* if we have one, it better be zero. */ |
252b5132 RH |
523 | |
524 | } | |
525 | else | |
526 | { | |
7c743825 KH |
527 | /* There are still several cases to check: |
528 | ||
529 | A .comm/.lcomm symbol being redefined as initialized | |
530 | data is OK | |
531 | ||
532 | A .comm/.lcomm symbol being redefined with a larger | |
533 | size is also OK | |
534 | ||
535 | This only used to be allowed on VMS gas, but Sun cc | |
536 | on the sparc also depends on it. */ | |
252b5132 RH |
537 | |
538 | if (((!S_IS_DEBUG (symbolP) | |
539 | && (!S_IS_DEFINED (symbolP) || S_IS_COMMON (symbolP)) | |
540 | && S_IS_EXTERNAL (symbolP)) | |
541 | || S_GET_SEGMENT (symbolP) == bss_section) | |
542 | && (now_seg == data_section | |
b3ce1bf7 | 543 | || now_seg == bss_section |
252b5132 RH |
544 | || now_seg == S_GET_SEGMENT (symbolP))) |
545 | { | |
7c743825 | 546 | /* Select which of the 2 cases this is. */ |
252b5132 RH |
547 | if (now_seg != data_section) |
548 | { | |
7c743825 KH |
549 | /* New .comm for prev .comm symbol. |
550 | ||
551 | If the new size is larger we just change its | |
552 | value. If the new size is smaller, we ignore | |
553 | this symbol. */ | |
252b5132 RH |
554 | if (S_GET_VALUE (symbolP) |
555 | < ((unsigned) frag_now_fix ())) | |
556 | { | |
557 | S_SET_VALUE (symbolP, (valueT) frag_now_fix ()); | |
558 | } | |
559 | } | |
560 | else | |
561 | { | |
562 | /* It is a .comm/.lcomm being converted to initialized | |
563 | data. */ | |
a3371076 | 564 | define_sym_at_dot (symbolP); |
252b5132 RH |
565 | } |
566 | } | |
567 | else | |
568 | { | |
a8eb42a8 | 569 | #if (!defined (OBJ_AOUT) && !defined (OBJ_MAYBE_AOUT)) |
4c63da97 | 570 | static const char *od_buf = ""; |
252b5132 | 571 | #else |
4c63da97 AM |
572 | char od_buf[100]; |
573 | od_buf[0] = '\0'; | |
4c63da97 | 574 | if (OUTPUT_FLAVOR == bfd_target_aout_flavour) |
d1a6c242 KH |
575 | sprintf (od_buf, "%d.%d.", |
576 | S_GET_OTHER (symbolP), | |
577 | S_GET_DESC (symbolP)); | |
4c63da97 | 578 | #endif |
0e389e77 | 579 | as_bad (_("symbol `%s' is already defined as \"%s\"/%s%ld"), |
252b5132 RH |
580 | sym_name, |
581 | segment_name (S_GET_SEGMENT (symbolP)), | |
4c63da97 | 582 | od_buf, |
252b5132 | 583 | (long) S_GET_VALUE (symbolP)); |
252b5132 | 584 | } |
7c743825 | 585 | } /* if the undefined symbol has no value */ |
252b5132 RH |
586 | } |
587 | else | |
588 | { | |
7c743825 | 589 | /* Don't blow up if the definition is the same. */ |
3c0d9d71 | 590 | if (!(frag_now == symbolP->frag |
252b5132 RH |
591 | && S_GET_VALUE (symbolP) == frag_now_fix () |
592 | && S_GET_SEGMENT (symbolP) == now_seg)) | |
92757bc9 JB |
593 | { |
594 | as_bad (_("symbol `%s' is already defined"), sym_name); | |
595 | symbolP = symbol_clone (symbolP, 0); | |
a3371076 | 596 | define_sym_at_dot (symbolP); |
92757bc9 | 597 | } |
d4887adc | 598 | } |
252b5132 RH |
599 | |
600 | } | |
49309057 ILT |
601 | else if (! flag_keep_locals && bfd_is_local_label_name (stdoutput, sym_name)) |
602 | { | |
e01e1cee AM |
603 | symbolP = (symbolS *) local_symbol_make (sym_name, now_seg, frag_now, |
604 | frag_now_fix ()); | |
49309057 | 605 | } |
252b5132 RH |
606 | else |
607 | { | |
e01e1cee | 608 | symbolP = symbol_new (sym_name, now_seg, frag_now, frag_now_fix ()); |
252b5132 RH |
609 | |
610 | symbol_table_insert (symbolP); | |
d4887adc | 611 | } |
252b5132 RH |
612 | |
613 | if (mri_common_symbol != NULL) | |
614 | { | |
615 | /* This symbol is actually being defined within an MRI common | |
1d3b2b27 | 616 | section. This requires special handling. */ |
5014c2d2 AM |
617 | if (symbolP->flags.local_symbol) |
618 | symbolP = local_symbol_convert (symbolP); | |
619 | symbolP->x->value.X_op = O_symbol; | |
620 | symbolP->x->value.X_add_symbol = mri_common_symbol; | |
621 | symbolP->x->value.X_add_number = S_GET_VALUE (mri_common_symbol); | |
3c0d9d71 | 622 | symbolP->frag = &zero_address_frag; |
252b5132 | 623 | S_SET_SEGMENT (symbolP, expr_section); |
3c0d9d71 | 624 | symbolP->flags.mri_common = 1; |
252b5132 RH |
625 | } |
626 | ||
627 | #ifdef tc_frob_label | |
628 | tc_frob_label (symbolP); | |
629 | #endif | |
630 | #ifdef obj_frob_label | |
631 | obj_frob_label (symbolP); | |
632 | #endif | |
633 | ||
634 | return symbolP; | |
635 | } | |
636 | \f | |
7c743825 | 637 | /* Die if we can't insert the symbol. */ |
252b5132 | 638 | |
7c743825 | 639 | void |
74937d39 | 640 | symbol_table_insert (symbolS *symbolP) |
252b5132 | 641 | { |
252b5132 | 642 | know (symbolP); |
252b5132 | 643 | |
fe0e921f | 644 | htab_insert (sy_hash, symbolP, 1); |
7c743825 | 645 | } |
252b5132 | 646 | \f |
7c743825 KH |
647 | /* If a symbol name does not exist, create it as undefined, and insert |
648 | it into the symbol table. Return a pointer to it. */ | |
649 | ||
252b5132 | 650 | symbolS * |
74937d39 | 651 | symbol_find_or_make (const char *name) |
252b5132 | 652 | { |
ed9e98c2 | 653 | symbolS *symbolP; |
252b5132 RH |
654 | |
655 | symbolP = symbol_find (name); | |
656 | ||
657 | if (symbolP == NULL) | |
658 | { | |
49309057 ILT |
659 | if (! flag_keep_locals && bfd_is_local_label_name (stdoutput, name)) |
660 | { | |
661 | symbolP = md_undefined_symbol ((char *) name); | |
662 | if (symbolP != NULL) | |
663 | return symbolP; | |
664 | ||
665 | symbolP = (symbolS *) local_symbol_make (name, undefined_section, | |
e01e1cee | 666 | &zero_address_frag, 0); |
49309057 ILT |
667 | return symbolP; |
668 | } | |
49309057 | 669 | |
252b5132 RH |
670 | symbolP = symbol_make (name); |
671 | ||
672 | symbol_table_insert (symbolP); | |
673 | } /* if symbol wasn't found */ | |
674 | ||
675 | return (symbolP); | |
7c743825 | 676 | } |
252b5132 RH |
677 | |
678 | symbolS * | |
74937d39 | 679 | symbol_make (const char *name) |
252b5132 RH |
680 | { |
681 | symbolS *symbolP; | |
682 | ||
7c743825 | 683 | /* Let the machine description default it, e.g. for register names. */ |
252b5132 RH |
684 | symbolP = md_undefined_symbol ((char *) name); |
685 | ||
686 | if (!symbolP) | |
e01e1cee | 687 | symbolP = symbol_new (name, undefined_section, &zero_address_frag, 0); |
252b5132 RH |
688 | |
689 | return (symbolP); | |
7c743825 | 690 | } |
252b5132 | 691 | |
9497f5ac NC |
692 | symbolS * |
693 | symbol_clone (symbolS *orgsymP, int replace) | |
694 | { | |
695 | symbolS *newsymP; | |
6a2b6326 | 696 | asymbol *bsymorg, *bsymnew; |
9497f5ac | 697 | |
4a826962 MR |
698 | /* Make sure we never clone the dot special symbol. */ |
699 | gas_assert (orgsymP != &dot_symbol); | |
700 | ||
5014c2d2 AM |
701 | /* When cloning a local symbol it isn't absolutely necessary to |
702 | convert the original, but converting makes the code much | |
703 | simpler to cover this unexpected case. As of 2020-08-21 | |
704 | symbol_clone won't be called on a local symbol. */ | |
705 | if (orgsymP->flags.local_symbol) | |
706 | orgsymP = local_symbol_convert (orgsymP); | |
6a2b6326 | 707 | bsymorg = orgsymP->bsym; |
9497f5ac | 708 | |
5014c2d2 AM |
709 | newsymP = (symbolS *) obstack_alloc (¬es, (sizeof (symbolS) |
710 | + sizeof (struct xsymbol))); | |
9497f5ac | 711 | *newsymP = *orgsymP; |
5014c2d2 AM |
712 | newsymP->x = (struct xsymbol *) (newsymP + 1); |
713 | *newsymP->x = *orgsymP->x; | |
6a2b6326 JB |
714 | bsymnew = bfd_make_empty_symbol (bfd_asymbol_bfd (bsymorg)); |
715 | if (bsymnew == NULL) | |
885afe7b | 716 | as_fatal ("bfd_make_empty_symbol: %s", bfd_errmsg (bfd_get_error ())); |
6a2b6326 JB |
717 | newsymP->bsym = bsymnew; |
718 | bsymnew->name = bsymorg->name; | |
25313d6a | 719 | bsymnew->flags = bsymorg->flags & ~BSF_SECTION_SYM; |
9d75b288 | 720 | bsymnew->section = bsymorg->section; |
6a2b6326 JB |
721 | bfd_copy_private_symbol_data (bfd_asymbol_bfd (bsymorg), bsymorg, |
722 | bfd_asymbol_bfd (bsymnew), bsymnew); | |
723 | ||
724 | #ifdef obj_symbol_clone_hook | |
725 | obj_symbol_clone_hook (newsymP, orgsymP); | |
726 | #endif | |
727 | ||
728 | #ifdef tc_symbol_clone_hook | |
729 | tc_symbol_clone_hook (newsymP, orgsymP); | |
730 | #endif | |
9497f5ac NC |
731 | |
732 | if (replace) | |
733 | { | |
734 | if (symbol_rootP == orgsymP) | |
735 | symbol_rootP = newsymP; | |
5014c2d2 | 736 | else if (orgsymP->x->previous) |
9497f5ac | 737 | { |
5014c2d2 AM |
738 | orgsymP->x->previous->x->next = newsymP; |
739 | orgsymP->x->previous = NULL; | |
9497f5ac NC |
740 | } |
741 | if (symbol_lastP == orgsymP) | |
742 | symbol_lastP = newsymP; | |
5014c2d2 AM |
743 | else if (orgsymP->x->next) |
744 | orgsymP->x->next->x->previous = newsymP; | |
73e24c68 AM |
745 | |
746 | /* Symbols that won't be output can't be external. */ | |
747 | S_CLEAR_EXTERNAL (orgsymP); | |
5014c2d2 | 748 | orgsymP->x->previous = orgsymP->x->next = orgsymP; |
9497f5ac NC |
749 | debug_verify_symchain (symbol_rootP, symbol_lastP); |
750 | ||
751 | symbol_table_insert (newsymP); | |
752 | } | |
bdf128d6 | 753 | else |
73e24c68 AM |
754 | { |
755 | /* Symbols that won't be output can't be external. */ | |
756 | S_CLEAR_EXTERNAL (newsymP); | |
5014c2d2 | 757 | newsymP->x->previous = newsymP->x->next = newsymP; |
73e24c68 | 758 | } |
9497f5ac NC |
759 | |
760 | return newsymP; | |
761 | } | |
762 | ||
763 | /* Referenced symbols, if they are forward references, need to be cloned | |
764 | (without replacing the original) so that the value of the referenced | |
38cf168b | 765 | symbols at the point of use is saved by the clone. */ |
9497f5ac NC |
766 | |
767 | #undef symbol_clone_if_forward_ref | |
768 | symbolS * | |
769 | symbol_clone_if_forward_ref (symbolS *symbolP, int is_forward) | |
770 | { | |
5014c2d2 | 771 | if (symbolP && !symbolP->flags.local_symbol) |
9497f5ac | 772 | { |
5014c2d2 AM |
773 | symbolS *orig_add_symbol = symbolP->x->value.X_add_symbol; |
774 | symbolS *orig_op_symbol = symbolP->x->value.X_op_symbol; | |
38cf168b AM |
775 | symbolS *add_symbol = orig_add_symbol; |
776 | symbolS *op_symbol = orig_op_symbol; | |
9497f5ac | 777 | |
3c0d9d71 | 778 | if (symbolP->flags.forward_ref) |
9497f5ac NC |
779 | is_forward = 1; |
780 | ||
781 | if (is_forward) | |
782 | { | |
783 | /* assign_symbol() clones volatile symbols; pre-existing expressions | |
784 | hold references to the original instance, but want the current | |
785 | value. Just repeat the lookup. */ | |
786 | if (add_symbol && S_IS_VOLATILE (add_symbol)) | |
787 | add_symbol = symbol_find_exact (S_GET_NAME (add_symbol)); | |
788 | if (op_symbol && S_IS_VOLATILE (op_symbol)) | |
789 | op_symbol = symbol_find_exact (S_GET_NAME (op_symbol)); | |
790 | } | |
791 | ||
3c0d9d71 | 792 | /* Re-using resolving here, as this routine cannot get called from |
9497f5ac | 793 | symbol resolution code. */ |
158184ac | 794 | if ((symbolP->bsym->section == expr_section |
3c0d9d71 AM |
795 | || symbolP->flags.forward_ref) |
796 | && !symbolP->flags.resolving) | |
9497f5ac | 797 | { |
3c0d9d71 | 798 | symbolP->flags.resolving = 1; |
9497f5ac NC |
799 | add_symbol = symbol_clone_if_forward_ref (add_symbol, is_forward); |
800 | op_symbol = symbol_clone_if_forward_ref (op_symbol, is_forward); | |
3c0d9d71 | 801 | symbolP->flags.resolving = 0; |
9497f5ac NC |
802 | } |
803 | ||
3c0d9d71 | 804 | if (symbolP->flags.forward_ref |
38cf168b AM |
805 | || add_symbol != orig_add_symbol |
806 | || op_symbol != orig_op_symbol) | |
3df4e177 | 807 | { |
4a826962 MR |
808 | if (symbolP != &dot_symbol) |
809 | { | |
810 | symbolP = symbol_clone (symbolP, 0); | |
3c0d9d71 | 811 | symbolP->flags.resolving = 0; |
4a826962 MR |
812 | } |
813 | else | |
a1facbec MR |
814 | { |
815 | symbolP = symbol_temp_new_now (); | |
816 | #ifdef tc_new_dot_label | |
817 | tc_new_dot_label (symbolP); | |
818 | #endif | |
819 | } | |
3df4e177 | 820 | } |
9497f5ac | 821 | |
5014c2d2 AM |
822 | symbolP->x->value.X_add_symbol = add_symbol; |
823 | symbolP->x->value.X_op_symbol = op_symbol; | |
9497f5ac NC |
824 | } |
825 | ||
826 | return symbolP; | |
827 | } | |
828 | ||
b7d6ed97 | 829 | symbolS * |
e01e1cee | 830 | symbol_temp_new (segT seg, fragS *frag, valueT ofs) |
b7d6ed97 | 831 | { |
e01e1cee | 832 | return symbol_new (FAKE_LABEL_NAME, seg, frag, ofs); |
b7d6ed97 RH |
833 | } |
834 | ||
835 | symbolS * | |
74937d39 | 836 | symbol_temp_new_now (void) |
b7d6ed97 | 837 | { |
e01e1cee | 838 | return symbol_temp_new (now_seg, frag_now, frag_now_fix ()); |
b7d6ed97 RH |
839 | } |
840 | ||
d18d1999 CE |
841 | symbolS * |
842 | symbol_temp_new_now_octets (void) | |
843 | { | |
e01e1cee | 844 | return symbol_temp_new (now_seg, frag_now, frag_now_fix_octets ()); |
d18d1999 CE |
845 | } |
846 | ||
b7d6ed97 | 847 | symbolS * |
74937d39 | 848 | symbol_temp_make (void) |
b7d6ed97 | 849 | { |
756d1d01 | 850 | return symbol_make (FAKE_LABEL_NAME); |
b7d6ed97 RH |
851 | } |
852 | ||
7c743825 KH |
853 | /* Implement symbol table lookup. |
854 | In: A symbol's name as a string: '\0' can't be part of a symbol name. | |
855 | Out: NULL if the name was not in the symbol table, else the address | |
856 | of a struct symbol associated with that name. */ | |
252b5132 | 857 | |
9758f3fc | 858 | symbolS * |
74937d39 | 859 | symbol_find_exact (const char *name) |
06e77878 AO |
860 | { |
861 | return symbol_find_exact_noref (name, 0); | |
862 | } | |
863 | ||
864 | symbolS * | |
865 | symbol_find_exact_noref (const char *name, int noref) | |
9758f3fc | 866 | { |
5014c2d2 | 867 | symbolS *sym = symbol_entry_find (sy_hash, name); |
06e77878 AO |
868 | |
869 | /* Any references to the symbol, except for the reference in | |
870 | .weakref, must clear this flag, such that the symbol does not | |
871 | turn into a weak symbol. Note that we don't have to handle the | |
872 | local_symbol case, since a weakrefd is always promoted out of the | |
873 | local_symbol table when it is turned into a weak symbol. */ | |
874 | if (sym && ! noref) | |
875 | S_CLEAR_WEAKREFD (sym); | |
876 | ||
877 | return sym; | |
9758f3fc AM |
878 | } |
879 | ||
252b5132 | 880 | symbolS * |
91c4c449 | 881 | symbol_find (const char *name) |
06e77878 AO |
882 | { |
883 | return symbol_find_noref (name, 0); | |
884 | } | |
885 | ||
886 | symbolS * | |
887 | symbol_find_noref (const char *name, int noref) | |
252b5132 | 888 | { |
e1fa0163 NC |
889 | symbolS * result; |
890 | char * copy = NULL; | |
891 | ||
252b5132 RH |
892 | #ifdef tc_canonicalize_symbol_name |
893 | { | |
e1fa0163 | 894 | copy = xstrdup (name); |
252b5132 RH |
895 | name = tc_canonicalize_symbol_name (copy); |
896 | } | |
897 | #endif | |
898 | ||
899 | if (! symbols_case_sensitive) | |
900 | { | |
03987ced | 901 | const char *orig; |
e1fa0163 | 902 | char *copy2 = NULL; |
03987ced RH |
903 | unsigned char c; |
904 | ||
905 | orig = name; | |
e1fa0163 NC |
906 | if (copy != NULL) |
907 | copy2 = copy; | |
325801bd | 908 | name = copy = XNEWVEC (char, strlen (name) + 1); |
03987ced RH |
909 | |
910 | while ((c = *orig++) != '\0') | |
e1fa0163 | 911 | *copy++ = TOUPPER (c); |
03987ced | 912 | *copy = '\0'; |
e1fa0163 | 913 | |
9fbb53c7 | 914 | free (copy2); |
e1fa0163 | 915 | copy = (char *) name; |
252b5132 RH |
916 | } |
917 | ||
e1fa0163 | 918 | result = symbol_find_exact_noref (name, noref); |
9fbb53c7 | 919 | free (copy); |
e1fa0163 | 920 | return result; |
252b5132 RH |
921 | } |
922 | ||
7c743825 KH |
923 | /* Once upon a time, symbols were kept in a singly linked list. At |
924 | least coff needs to be able to rearrange them from time to time, for | |
925 | which a doubly linked list is much more convenient. Loic did these | |
926 | as macros which seemed dangerous to me so they're now functions. | |
927 | xoxorich. */ | |
928 | ||
929 | /* Link symbol ADDME after symbol TARGET in the chain. */ | |
252b5132 | 930 | |
7c743825 | 931 | void |
74937d39 KH |
932 | symbol_append (symbolS *addme, symbolS *target, |
933 | symbolS **rootPP, symbolS **lastPP) | |
252b5132 | 934 | { |
3c0d9d71 AM |
935 | extern int symbol_table_frozen; |
936 | if (symbol_table_frozen) | |
937 | abort (); | |
5014c2d2 | 938 | if (addme->flags.local_symbol) |
49309057 | 939 | abort (); |
5014c2d2 | 940 | if (target != NULL && target->flags.local_symbol) |
49309057 ILT |
941 | abort (); |
942 | ||
252b5132 RH |
943 | if (target == NULL) |
944 | { | |
945 | know (*rootPP == NULL); | |
946 | know (*lastPP == NULL); | |
5014c2d2 AM |
947 | addme->x->next = NULL; |
948 | addme->x->previous = NULL; | |
252b5132 RH |
949 | *rootPP = addme; |
950 | *lastPP = addme; | |
951 | return; | |
7c743825 | 952 | } /* if the list is empty */ |
252b5132 | 953 | |
5014c2d2 | 954 | if (target->x->next != NULL) |
252b5132 | 955 | { |
5014c2d2 | 956 | target->x->next->x->previous = addme; |
252b5132 RH |
957 | } |
958 | else | |
959 | { | |
960 | know (*lastPP == target); | |
961 | *lastPP = addme; | |
7c743825 | 962 | } /* if we have a next */ |
252b5132 | 963 | |
5014c2d2 AM |
964 | addme->x->next = target->x->next; |
965 | target->x->next = addme; | |
966 | addme->x->previous = target; | |
252b5132 RH |
967 | |
968 | debug_verify_symchain (symbol_rootP, symbol_lastP); | |
969 | } | |
970 | ||
7c743825 KH |
971 | /* Set the chain pointers of SYMBOL to null. */ |
972 | ||
973 | void | |
74937d39 | 974 | symbol_clear_list_pointers (symbolS *symbolP) |
252b5132 | 975 | { |
5014c2d2 | 976 | if (symbolP->flags.local_symbol) |
49309057 | 977 | abort (); |
5014c2d2 AM |
978 | symbolP->x->next = NULL; |
979 | symbolP->x->previous = NULL; | |
252b5132 RH |
980 | } |
981 | ||
7c743825 KH |
982 | /* Remove SYMBOLP from the list. */ |
983 | ||
984 | void | |
74937d39 | 985 | symbol_remove (symbolS *symbolP, symbolS **rootPP, symbolS **lastPP) |
252b5132 | 986 | { |
5014c2d2 | 987 | if (symbolP->flags.local_symbol) |
49309057 ILT |
988 | abort (); |
989 | ||
252b5132 RH |
990 | if (symbolP == *rootPP) |
991 | { | |
5014c2d2 | 992 | *rootPP = symbolP->x->next; |
7c743825 | 993 | } /* if it was the root */ |
252b5132 RH |
994 | |
995 | if (symbolP == *lastPP) | |
996 | { | |
5014c2d2 | 997 | *lastPP = symbolP->x->previous; |
7c743825 | 998 | } /* if it was the tail */ |
252b5132 | 999 | |
5014c2d2 | 1000 | if (symbolP->x->next != NULL) |
252b5132 | 1001 | { |
5014c2d2 | 1002 | symbolP->x->next->x->previous = symbolP->x->previous; |
7c743825 | 1003 | } /* if not last */ |
252b5132 | 1004 | |
5014c2d2 | 1005 | if (symbolP->x->previous != NULL) |
252b5132 | 1006 | { |
5014c2d2 | 1007 | symbolP->x->previous->x->next = symbolP->x->next; |
7c743825 | 1008 | } /* if not first */ |
252b5132 RH |
1009 | |
1010 | debug_verify_symchain (*rootPP, *lastPP); | |
1011 | } | |
1012 | ||
7c743825 KH |
1013 | /* Link symbol ADDME before symbol TARGET in the chain. */ |
1014 | ||
1015 | void | |
74937d39 KH |
1016 | symbol_insert (symbolS *addme, symbolS *target, |
1017 | symbolS **rootPP, symbolS **lastPP ATTRIBUTE_UNUSED) | |
252b5132 | 1018 | { |
3c0d9d71 AM |
1019 | extern int symbol_table_frozen; |
1020 | if (symbol_table_frozen) | |
1021 | abort (); | |
5014c2d2 | 1022 | if (addme->flags.local_symbol) |
49309057 | 1023 | abort (); |
5014c2d2 | 1024 | if (target->flags.local_symbol) |
49309057 ILT |
1025 | abort (); |
1026 | ||
5014c2d2 | 1027 | if (target->x->previous != NULL) |
252b5132 | 1028 | { |
5014c2d2 | 1029 | target->x->previous->x->next = addme; |
252b5132 RH |
1030 | } |
1031 | else | |
1032 | { | |
1033 | know (*rootPP == target); | |
1034 | *rootPP = addme; | |
7c743825 | 1035 | } /* if not first */ |
252b5132 | 1036 | |
5014c2d2 AM |
1037 | addme->x->previous = target->x->previous; |
1038 | target->x->previous = addme; | |
1039 | addme->x->next = target; | |
252b5132 RH |
1040 | |
1041 | debug_verify_symchain (*rootPP, *lastPP); | |
1042 | } | |
1043 | ||
7c743825 | 1044 | void |
74937d39 | 1045 | verify_symbol_chain (symbolS *rootP, symbolS *lastP) |
252b5132 RH |
1046 | { |
1047 | symbolS *symbolP = rootP; | |
1048 | ||
1049 | if (symbolP == NULL) | |
1050 | return; | |
1051 | ||
1052 | for (; symbol_next (symbolP) != NULL; symbolP = symbol_next (symbolP)) | |
1053 | { | |
9c2799c2 | 1054 | gas_assert (symbolP->bsym != NULL); |
3c0d9d71 | 1055 | gas_assert (symbolP->flags.local_symbol == 0); |
5014c2d2 | 1056 | gas_assert (symbolP->x->next->x->previous == symbolP); |
252b5132 RH |
1057 | } |
1058 | ||
9c2799c2 | 1059 | gas_assert (lastP == symbolP); |
252b5132 RH |
1060 | } |
1061 | ||
8d1015a8 AM |
1062 | int |
1063 | symbol_on_chain (symbolS *s, symbolS *rootPP, symbolS *lastPP) | |
1064 | { | |
5014c2d2 AM |
1065 | return (!s->flags.local_symbol |
1066 | && ((s->x->next != s | |
1067 | && s->x->next != NULL | |
1068 | && s->x->next->x->previous == s) | |
8d1015a8 | 1069 | || s == lastPP) |
5014c2d2 AM |
1070 | && ((s->x->previous != s |
1071 | && s->x->previous != NULL | |
1072 | && s->x->previous->x->next == s) | |
8d1015a8 AM |
1073 | || s == rootPP)); |
1074 | } | |
1075 | ||
280d71bf DB |
1076 | #ifdef OBJ_COMPLEX_RELC |
1077 | ||
1078 | static int | |
1079 | use_complex_relocs_for (symbolS * symp) | |
1080 | { | |
5014c2d2 | 1081 | switch (symp->x->value.X_op) |
280d71bf DB |
1082 | { |
1083 | case O_constant: | |
1084 | return 0; | |
1085 | ||
280d71bf DB |
1086 | case O_multiply: |
1087 | case O_divide: | |
1088 | case O_modulus: | |
1089 | case O_left_shift: | |
1090 | case O_right_shift: | |
1091 | case O_bit_inclusive_or: | |
1092 | case O_bit_or_not: | |
1093 | case O_bit_exclusive_or: | |
1094 | case O_bit_and: | |
1095 | case O_add: | |
1096 | case O_subtract: | |
1097 | case O_eq: | |
1098 | case O_ne: | |
1099 | case O_lt: | |
1100 | case O_le: | |
1101 | case O_ge: | |
1102 | case O_gt: | |
1103 | case O_logical_and: | |
1104 | case O_logical_or: | |
5014c2d2 AM |
1105 | if ((S_IS_COMMON (symp->x->value.X_op_symbol) |
1106 | || S_IS_LOCAL (symp->x->value.X_op_symbol)) | |
1107 | && S_IS_DEFINED (symp->x->value.X_op_symbol) | |
1108 | && S_GET_SEGMENT (symp->x->value.X_op_symbol) != expr_section) | |
0f1309c8 AM |
1109 | { |
1110 | case O_symbol: | |
1111 | case O_symbol_rva: | |
1112 | case O_uminus: | |
1113 | case O_bit_not: | |
1114 | case O_logical_not: | |
5014c2d2 AM |
1115 | if ((S_IS_COMMON (symp->x->value.X_add_symbol) |
1116 | || S_IS_LOCAL (symp->x->value.X_add_symbol)) | |
1117 | && S_IS_DEFINED (symp->x->value.X_add_symbol) | |
1118 | && S_GET_SEGMENT (symp->x->value.X_add_symbol) != expr_section) | |
0f1309c8 AM |
1119 | return 0; |
1120 | } | |
280d71bf | 1121 | break; |
34bca508 | 1122 | |
280d71bf DB |
1123 | default: |
1124 | break; | |
1125 | } | |
1126 | return 1; | |
1127 | } | |
1128 | #endif | |
1129 | ||
0909233e | 1130 | static void |
5a0ade8b | 1131 | report_op_error (symbolS *symp, symbolS *left, operatorT op, symbolS *right) |
0909233e | 1132 | { |
3b4dbbbf | 1133 | const char *file; |
0909233e | 1134 | unsigned int line; |
5a0ade8b AM |
1135 | segT seg_left = left ? S_GET_SEGMENT (left) : 0; |
1136 | segT seg_right = S_GET_SEGMENT (right); | |
1137 | const char *opname; | |
1138 | ||
1139 | switch (op) | |
1140 | { | |
1141 | default: | |
1142 | abort (); | |
1143 | return; | |
1144 | ||
1145 | case O_uminus: opname = "-"; break; | |
1146 | case O_bit_not: opname = "~"; break; | |
1147 | case O_logical_not: opname = "!"; break; | |
1148 | case O_multiply: opname = "*"; break; | |
1149 | case O_divide: opname = "/"; break; | |
1150 | case O_modulus: opname = "%"; break; | |
1151 | case O_left_shift: opname = "<<"; break; | |
1152 | case O_right_shift: opname = ">>"; break; | |
1153 | case O_bit_inclusive_or: opname = "|"; break; | |
1154 | case O_bit_or_not: opname = "|~"; break; | |
1155 | case O_bit_exclusive_or: opname = "^"; break; | |
1156 | case O_bit_and: opname = "&"; break; | |
1157 | case O_add: opname = "+"; break; | |
1158 | case O_subtract: opname = "-"; break; | |
1159 | case O_eq: opname = "=="; break; | |
1160 | case O_ne: opname = "!="; break; | |
1161 | case O_lt: opname = "<"; break; | |
1162 | case O_le: opname = "<="; break; | |
1163 | case O_ge: opname = ">="; break; | |
1164 | case O_gt: opname = ">"; break; | |
1165 | case O_logical_and: opname = "&&"; break; | |
1166 | case O_logical_or: opname = "||"; break; | |
1167 | } | |
1d3b2b27 | 1168 | |
0909233e AM |
1169 | if (expr_symbol_where (symp, &file, &line)) |
1170 | { | |
5a0ade8b | 1171 | if (left) |
0909233e | 1172 | as_bad_where (file, line, |
5a0ade8b AM |
1173 | _("invalid operands (%s and %s sections) for `%s'"), |
1174 | seg_left->name, seg_right->name, opname); | |
1175 | else | |
0909233e | 1176 | as_bad_where (file, line, |
5a0ade8b AM |
1177 | _("invalid operand (%s section) for `%s'"), |
1178 | seg_right->name, opname); | |
0909233e AM |
1179 | } |
1180 | else | |
1181 | { | |
5a0ade8b AM |
1182 | const char *sname = S_GET_NAME (symp); |
1183 | ||
1184 | if (left) | |
1185 | as_bad (_("invalid operands (%s and %s sections) for `%s' when setting `%s'"), | |
1186 | seg_left->name, seg_right->name, opname, sname); | |
1187 | else | |
1188 | as_bad (_("invalid operand (%s section) for `%s' when setting `%s'"), | |
1189 | seg_right->name, opname, sname); | |
0909233e AM |
1190 | } |
1191 | } | |
1192 | ||
252b5132 RH |
1193 | /* Resolve the value of a symbol. This is called during the final |
1194 | pass over the symbol table to resolve any symbols with complex | |
1195 | values. */ | |
1196 | ||
1197 | valueT | |
74937d39 | 1198 | resolve_symbol_value (symbolS *symp) |
252b5132 RH |
1199 | { |
1200 | int resolved; | |
1903f138 | 1201 | valueT final_val; |
252b5132 RH |
1202 | segT final_seg; |
1203 | ||
5014c2d2 | 1204 | if (symp->flags.local_symbol) |
49309057 ILT |
1205 | { |
1206 | struct local_symbol *locsym = (struct local_symbol *) symp; | |
1207 | ||
3c0d9d71 AM |
1208 | final_val = locsym->value; |
1209 | if (locsym->flags.resolved) | |
bd780143 | 1210 | return final_val; |
49309057 | 1211 | |
61826503 CE |
1212 | /* Symbols whose section has SEC_ELF_OCTETS set, |
1213 | resolve to octets instead of target bytes. */ | |
3c0d9d71 | 1214 | if (locsym->section->flags & SEC_OCTETS) |
5014c2d2 | 1215 | final_val += locsym->frag->fr_address; |
61826503 | 1216 | else |
5014c2d2 | 1217 | final_val += locsym->frag->fr_address / OCTETS_PER_BYTE; |
49309057 | 1218 | |
6386f3a7 | 1219 | if (finalize_syms) |
49309057 | 1220 | { |
3c0d9d71 AM |
1221 | locsym->value = final_val; |
1222 | locsym->flags.resolved = 1; | |
49309057 ILT |
1223 | } |
1224 | ||
1225 | return final_val; | |
1226 | } | |
1227 | ||
3c0d9d71 | 1228 | if (symp->flags.resolved) |
252b5132 | 1229 | { |
1903f138 | 1230 | final_val = 0; |
5014c2d2 | 1231 | while (symp->x->value.X_op == O_symbol) |
1903f138 | 1232 | { |
5014c2d2 AM |
1233 | final_val += symp->x->value.X_add_number; |
1234 | symp = symp->x->value.X_add_symbol; | |
1235 | if (symp->flags.local_symbol) | |
2a50b401 AM |
1236 | { |
1237 | struct local_symbol *locsym = (struct local_symbol *) symp; | |
3c0d9d71 | 1238 | final_val += locsym->value; |
2a50b401 AM |
1239 | return final_val; |
1240 | } | |
3c0d9d71 | 1241 | if (!symp->flags.resolved) |
2a50b401 | 1242 | return 0; |
1903f138 | 1243 | } |
5014c2d2 AM |
1244 | if (symp->x->value.X_op == O_constant) |
1245 | final_val += symp->x->value.X_add_number; | |
252b5132 | 1246 | else |
1903f138 AM |
1247 | final_val = 0; |
1248 | return final_val; | |
252b5132 RH |
1249 | } |
1250 | ||
1251 | resolved = 0; | |
1252 | final_seg = S_GET_SEGMENT (symp); | |
1253 | ||
3c0d9d71 | 1254 | if (symp->flags.resolving) |
252b5132 | 1255 | { |
6386f3a7 | 1256 | if (finalize_syms) |
0e389e77 | 1257 | as_bad (_("symbol definition loop encountered at `%s'"), |
7c743825 | 1258 | S_GET_NAME (symp)); |
252b5132 RH |
1259 | final_val = 0; |
1260 | resolved = 1; | |
1261 | } | |
280d71bf DB |
1262 | #ifdef OBJ_COMPLEX_RELC |
1263 | else if (final_seg == expr_section | |
1264 | && use_complex_relocs_for (symp)) | |
1265 | { | |
1266 | symbolS * relc_symbol = NULL; | |
1267 | char * relc_symbol_name = NULL; | |
1268 | ||
5014c2d2 | 1269 | relc_symbol_name = symbol_relc_make_expr (& symp->x->value); |
280d71bf DB |
1270 | |
1271 | /* For debugging, print out conversion input & output. */ | |
1272 | #ifdef DEBUG_SYMS | |
5014c2d2 | 1273 | print_expr (& symp->x->value); |
280d71bf DB |
1274 | if (relc_symbol_name) |
1275 | fprintf (stderr, "-> relc symbol: %s\n", relc_symbol_name); | |
1276 | #endif | |
1277 | ||
1278 | if (relc_symbol_name != NULL) | |
1279 | relc_symbol = symbol_new (relc_symbol_name, undefined_section, | |
e01e1cee | 1280 | &zero_address_frag, 0); |
280d71bf DB |
1281 | |
1282 | if (relc_symbol == NULL) | |
1283 | { | |
1284 | as_bad (_("cannot convert expression symbol %s to complex relocation"), | |
1285 | S_GET_NAME (symp)); | |
1286 | resolved = 0; | |
1287 | } | |
1288 | else | |
1289 | { | |
1290 | symbol_table_insert (relc_symbol); | |
1291 | ||
3c0d9d71 | 1292 | /* S_CLEAR_EXTERNAL (relc_symbol); */ |
280d71bf DB |
1293 | if (symp->bsym->flags & BSF_SRELC) |
1294 | relc_symbol->bsym->flags |= BSF_SRELC; | |
1295 | else | |
34bca508 | 1296 | relc_symbol->bsym->flags |= BSF_RELC; |
280d71bf DB |
1297 | /* symp->bsym->flags |= BSF_RELC; */ |
1298 | copy_symbol_attributes (symp, relc_symbol); | |
5014c2d2 AM |
1299 | symp->x->value.X_op = O_symbol; |
1300 | symp->x->value.X_add_symbol = relc_symbol; | |
1301 | symp->x->value.X_add_number = 0; | |
280d71bf DB |
1302 | resolved = 1; |
1303 | } | |
1304 | ||
1903f138 | 1305 | final_val = 0; |
280d71bf DB |
1306 | final_seg = undefined_section; |
1307 | goto exit_dont_set_value; | |
1308 | } | |
1309 | #endif | |
252b5132 RH |
1310 | else |
1311 | { | |
1312 | symbolS *add_symbol, *op_symbol; | |
1313 | offsetT left, right; | |
1314 | segT seg_left, seg_right; | |
1315 | operatorT op; | |
2d034539 | 1316 | int move_seg_ok; |
252b5132 | 1317 | |
3c0d9d71 | 1318 | symp->flags.resolving = 1; |
252b5132 RH |
1319 | |
1320 | /* Help out with CSE. */ | |
5014c2d2 AM |
1321 | add_symbol = symp->x->value.X_add_symbol; |
1322 | op_symbol = symp->x->value.X_op_symbol; | |
1323 | final_val = symp->x->value.X_add_number; | |
1324 | op = symp->x->value.X_op; | |
252b5132 RH |
1325 | |
1326 | switch (op) | |
1327 | { | |
1328 | default: | |
1329 | BAD_CASE (op); | |
1330 | break; | |
1331 | ||
1332 | case O_absent: | |
1333 | final_val = 0; | |
1334 | /* Fall through. */ | |
1335 | ||
1336 | case O_constant: | |
61826503 CE |
1337 | /* Symbols whose section has SEC_ELF_OCTETS set, |
1338 | resolve to octets instead of target bytes. */ | |
1339 | if (symp->bsym->section->flags & SEC_OCTETS) | |
3c0d9d71 | 1340 | final_val += symp->frag->fr_address; |
61826503 | 1341 | else |
3c0d9d71 | 1342 | final_val += symp->frag->fr_address / OCTETS_PER_BYTE; |
252b5132 RH |
1343 | if (final_seg == expr_section) |
1344 | final_seg = absolute_section; | |
db557034 AM |
1345 | /* Fall through. */ |
1346 | ||
1347 | case O_register: | |
252b5132 RH |
1348 | resolved = 1; |
1349 | break; | |
1350 | ||
1351 | case O_symbol: | |
1352 | case O_symbol_rva: | |
6386f3a7 | 1353 | left = resolve_symbol_value (add_symbol); |
e0890092 AM |
1354 | seg_left = S_GET_SEGMENT (add_symbol); |
1355 | if (finalize_syms) | |
5014c2d2 | 1356 | symp->x->value.X_op_symbol = NULL; |
252b5132 | 1357 | |
e0890092 | 1358 | do_symbol: |
06e77878 AO |
1359 | if (S_IS_WEAKREFR (symp)) |
1360 | { | |
9c2799c2 | 1361 | gas_assert (final_val == 0); |
06e77878 AO |
1362 | if (S_IS_WEAKREFR (add_symbol)) |
1363 | { | |
5014c2d2 AM |
1364 | gas_assert (add_symbol->x->value.X_op == O_symbol |
1365 | && add_symbol->x->value.X_add_number == 0); | |
1366 | add_symbol = add_symbol->x->value.X_add_symbol; | |
9c2799c2 | 1367 | gas_assert (! S_IS_WEAKREFR (add_symbol)); |
5014c2d2 | 1368 | symp->x->value.X_add_symbol = add_symbol; |
06e77878 AO |
1369 | } |
1370 | } | |
1371 | ||
3c0d9d71 | 1372 | if (symp->flags.mri_common) |
252b5132 RH |
1373 | { |
1374 | /* This is a symbol inside an MRI common section. The | |
e0890092 AM |
1375 | relocation routines are going to handle it specially. |
1376 | Don't change the value. */ | |
49309057 | 1377 | resolved = symbol_resolved_p (add_symbol); |
252b5132 RH |
1378 | break; |
1379 | } | |
1380 | ||
2a50b401 AM |
1381 | /* Don't leave symbol loops. */ |
1382 | if (finalize_syms | |
5014c2d2 | 1383 | && !add_symbol->flags.local_symbol |
3c0d9d71 | 1384 | && add_symbol->flags.resolving) |
2a50b401 AM |
1385 | break; |
1386 | ||
cd026728 CC |
1387 | if (finalize_syms && final_val == 0 |
1388 | #ifdef OBJ_XCOFF | |
1389 | /* Avoid changing symp's "within" when dealing with | |
1390 | AIX debug symbols. For some storage classes, "within" | |
1391 | have a special meaning. | |
1392 | C_DWARF should behave like on Linux, thus this check | |
1393 | isn't done to be closer. */ | |
1394 | && ((symbol_get_bfdsym (symp)->flags & BSF_DEBUGGING) == 0 | |
1395 | || (S_GET_STORAGE_CLASS (symp) == C_DWARF)) | |
1396 | #endif | |
1397 | ) | |
49309057 | 1398 | { |
5014c2d2 AM |
1399 | if (add_symbol->flags.local_symbol) |
1400 | add_symbol = local_symbol_convert (add_symbol); | |
49309057 ILT |
1401 | copy_symbol_attributes (symp, add_symbol); |
1402 | } | |
252b5132 | 1403 | |
e0890092 AM |
1404 | /* If we have equated this symbol to an undefined or common |
1405 | symbol, keep X_op set to O_symbol, and don't change | |
1406 | X_add_number. This permits the routine which writes out | |
1407 | relocation to detect this case, and convert the | |
1408 | relocation to be against the symbol to which this symbol | |
1409 | is equated. */ | |
1903f138 AM |
1410 | if (seg_left == undefined_section |
1411 | || bfd_is_com_section (seg_left) | |
7be1c489 | 1412 | #if defined (OBJ_COFF) && defined (TE_PE) |
977cdf5a NC |
1413 | || S_IS_WEAK (add_symbol) |
1414 | #endif | |
1903f138 AM |
1415 | || (finalize_syms |
1416 | && ((final_seg == expr_section | |
1417 | && seg_left != expr_section | |
1418 | && seg_left != absolute_section) | |
1419 | || symbol_shadow_p (symp)))) | |
252b5132 | 1420 | { |
6386f3a7 | 1421 | if (finalize_syms) |
252b5132 | 1422 | { |
5014c2d2 AM |
1423 | symp->x->value.X_op = O_symbol; |
1424 | symp->x->value.X_add_symbol = add_symbol; | |
1425 | symp->x->value.X_add_number = final_val; | |
e0890092 | 1426 | /* Use X_op_symbol as a flag. */ |
5014c2d2 | 1427 | symp->x->value.X_op_symbol = add_symbol; |
252b5132 | 1428 | } |
5a0ade8b | 1429 | final_seg = seg_left; |
3c0d9d71 | 1430 | final_val += symp->frag->fr_address + left; |
e0890092 | 1431 | resolved = symbol_resolved_p (add_symbol); |
3c0d9d71 | 1432 | symp->flags.resolving = 0; |
e0890092 AM |
1433 | goto exit_dont_set_value; |
1434 | } | |
252b5132 RH |
1435 | else |
1436 | { | |
3c0d9d71 | 1437 | final_val += symp->frag->fr_address + left; |
252b5132 | 1438 | if (final_seg == expr_section || final_seg == undefined_section) |
e0890092 | 1439 | final_seg = seg_left; |
252b5132 RH |
1440 | } |
1441 | ||
49309057 | 1442 | resolved = symbol_resolved_p (add_symbol); |
06e77878 | 1443 | if (S_IS_WEAKREFR (symp)) |
22987cec | 1444 | { |
3c0d9d71 | 1445 | symp->flags.resolving = 0; |
22987cec AM |
1446 | goto exit_dont_set_value; |
1447 | } | |
252b5132 RH |
1448 | break; |
1449 | ||
1450 | case O_uminus: | |
1451 | case O_bit_not: | |
1452 | case O_logical_not: | |
6386f3a7 | 1453 | left = resolve_symbol_value (add_symbol); |
784b640d | 1454 | seg_left = S_GET_SEGMENT (add_symbol); |
252b5132 | 1455 | |
0909233e | 1456 | /* By reducing these to the relevant dyadic operator, we get |
3c0d9d71 AM |
1457 | !S -> S == 0 permitted on anything, |
1458 | -S -> 0 - S only permitted on absolute | |
1459 | ~S -> S ^ ~0 only permitted on absolute */ | |
0909233e AM |
1460 | if (op != O_logical_not && seg_left != absolute_section |
1461 | && finalize_syms) | |
5a0ade8b | 1462 | report_op_error (symp, NULL, op, add_symbol); |
1d3b2b27 | 1463 | |
0909233e AM |
1464 | if (final_seg == expr_section || final_seg == undefined_section) |
1465 | final_seg = absolute_section; | |
1d3b2b27 | 1466 | |
252b5132 RH |
1467 | if (op == O_uminus) |
1468 | left = -left; | |
1469 | else if (op == O_logical_not) | |
1470 | left = !left; | |
1471 | else | |
1472 | left = ~left; | |
1473 | ||
3c0d9d71 | 1474 | final_val += left + symp->frag->fr_address; |
252b5132 | 1475 | |
49309057 | 1476 | resolved = symbol_resolved_p (add_symbol); |
252b5132 RH |
1477 | break; |
1478 | ||
1479 | case O_multiply: | |
1480 | case O_divide: | |
1481 | case O_modulus: | |
1482 | case O_left_shift: | |
1483 | case O_right_shift: | |
1484 | case O_bit_inclusive_or: | |
1485 | case O_bit_or_not: | |
1486 | case O_bit_exclusive_or: | |
1487 | case O_bit_and: | |
1488 | case O_add: | |
1489 | case O_subtract: | |
1490 | case O_eq: | |
1491 | case O_ne: | |
1492 | case O_lt: | |
1493 | case O_le: | |
1494 | case O_ge: | |
1495 | case O_gt: | |
1496 | case O_logical_and: | |
1497 | case O_logical_or: | |
6386f3a7 AM |
1498 | left = resolve_symbol_value (add_symbol); |
1499 | right = resolve_symbol_value (op_symbol); | |
252b5132 RH |
1500 | seg_left = S_GET_SEGMENT (add_symbol); |
1501 | seg_right = S_GET_SEGMENT (op_symbol); | |
1502 | ||
1503 | /* Simplify addition or subtraction of a constant by folding the | |
1504 | constant into X_add_number. */ | |
e0890092 | 1505 | if (op == O_add) |
252b5132 RH |
1506 | { |
1507 | if (seg_right == absolute_section) | |
1508 | { | |
e0890092 | 1509 | final_val += right; |
252b5132 RH |
1510 | goto do_symbol; |
1511 | } | |
e0890092 | 1512 | else if (seg_left == absolute_section) |
252b5132 | 1513 | { |
252b5132 RH |
1514 | final_val += left; |
1515 | add_symbol = op_symbol; | |
1516 | left = right; | |
e0890092 AM |
1517 | seg_left = seg_right; |
1518 | goto do_symbol; | |
1519 | } | |
1520 | } | |
1521 | else if (op == O_subtract) | |
1522 | { | |
1523 | if (seg_right == absolute_section) | |
1524 | { | |
1525 | final_val -= right; | |
252b5132 RH |
1526 | goto do_symbol; |
1527 | } | |
1528 | } | |
1529 | ||
2d034539 | 1530 | move_seg_ok = 1; |
e0890092 AM |
1531 | /* Equality and non-equality tests are permitted on anything. |
1532 | Subtraction, and other comparison operators are permitted if | |
1533 | both operands are in the same section. Otherwise, both | |
1534 | operands must be absolute. We already handled the case of | |
1535 | addition or subtraction of a constant above. This will | |
1536 | probably need to be changed for an object file format which | |
fdef3943 | 1537 | supports arbitrary expressions. */ |
2d034539 | 1538 | if (!(seg_left == absolute_section |
5a0ade8b | 1539 | && seg_right == absolute_section) |
0909233e AM |
1540 | && !(op == O_eq || op == O_ne) |
1541 | && !((op == O_subtract | |
1542 | || op == O_lt || op == O_le || op == O_ge || op == O_gt) | |
1543 | && seg_left == seg_right | |
1544 | && (seg_left != undefined_section | |
1545 | || add_symbol == op_symbol))) | |
2d034539 NC |
1546 | { |
1547 | /* Don't emit messages unless we're finalizing the symbol value, | |
1548 | otherwise we may get the same message multiple times. */ | |
1549 | if (finalize_syms) | |
5a0ade8b | 1550 | report_op_error (symp, add_symbol, op, op_symbol); |
2d034539 NC |
1551 | /* However do not move the symbol into the absolute section |
1552 | if it cannot currently be resolved - this would confuse | |
1553 | other parts of the assembler into believing that the | |
1554 | expression had been evaluated to zero. */ | |
1555 | else | |
1556 | move_seg_ok = 0; | |
1557 | } | |
1d3b2b27 | 1558 | |
2d034539 NC |
1559 | if (move_seg_ok |
1560 | && (final_seg == expr_section || final_seg == undefined_section)) | |
0909233e | 1561 | final_seg = absolute_section; |
252b5132 RH |
1562 | |
1563 | /* Check for division by zero. */ | |
1564 | if ((op == O_divide || op == O_modulus) && right == 0) | |
1565 | { | |
1566 | /* If seg_right is not absolute_section, then we've | |
e0890092 | 1567 | already issued a warning about using a bad symbol. */ |
6386f3a7 | 1568 | if (seg_right == absolute_section && finalize_syms) |
252b5132 | 1569 | { |
3b4dbbbf | 1570 | const char *file; |
252b5132 RH |
1571 | unsigned int line; |
1572 | ||
1573 | if (expr_symbol_where (symp, &file, &line)) | |
1574 | as_bad_where (file, line, _("division by zero")); | |
1575 | else | |
0e389e77 | 1576 | as_bad (_("division by zero when setting `%s'"), |
252b5132 RH |
1577 | S_GET_NAME (symp)); |
1578 | } | |
1579 | ||
1580 | right = 1; | |
1581 | } | |
d8d6da13 AM |
1582 | if ((op == O_left_shift || op == O_right_shift) |
1583 | && (valueT) right >= sizeof (valueT) * CHAR_BIT) | |
1584 | { | |
1585 | as_warn_value_out_of_range (_("shift count"), right, 0, | |
1586 | sizeof (valueT) * CHAR_BIT - 1, | |
1587 | NULL, 0); | |
1588 | left = right = 0; | |
1589 | } | |
252b5132 | 1590 | |
5014c2d2 | 1591 | switch (symp->x->value.X_op) |
252b5132 RH |
1592 | { |
1593 | case O_multiply: left *= right; break; | |
1594 | case O_divide: left /= right; break; | |
1595 | case O_modulus: left %= right; break; | |
d8d6da13 AM |
1596 | case O_left_shift: |
1597 | left = (valueT) left << (valueT) right; break; | |
1598 | case O_right_shift: | |
1599 | left = (valueT) left >> (valueT) right; break; | |
252b5132 RH |
1600 | case O_bit_inclusive_or: left |= right; break; |
1601 | case O_bit_or_not: left |= ~right; break; | |
1602 | case O_bit_exclusive_or: left ^= right; break; | |
1603 | case O_bit_and: left &= right; break; | |
1604 | case O_add: left += right; break; | |
1605 | case O_subtract: left -= right; break; | |
e0890092 AM |
1606 | case O_eq: |
1607 | case O_ne: | |
1608 | left = (left == right && seg_left == seg_right | |
1609 | && (seg_left != undefined_section | |
1610 | || add_symbol == op_symbol) | |
1611 | ? ~ (offsetT) 0 : 0); | |
5014c2d2 | 1612 | if (symp->x->value.X_op == O_ne) |
e0890092 AM |
1613 | left = ~left; |
1614 | break; | |
252b5132 RH |
1615 | case O_lt: left = left < right ? ~ (offsetT) 0 : 0; break; |
1616 | case O_le: left = left <= right ? ~ (offsetT) 0 : 0; break; | |
1617 | case O_ge: left = left >= right ? ~ (offsetT) 0 : 0; break; | |
1618 | case O_gt: left = left > right ? ~ (offsetT) 0 : 0; break; | |
1619 | case O_logical_and: left = left && right; break; | |
1620 | case O_logical_or: left = left || right; break; | |
6d6ad65b NC |
1621 | |
1622 | case O_illegal: | |
1623 | case O_absent: | |
1624 | case O_constant: | |
1625 | /* See PR 20895 for a reproducer. */ | |
1626 | as_bad (_("Invalid operation on symbol")); | |
1627 | goto exit_dont_set_value; | |
1628 | ||
1629 | default: | |
1630 | abort (); | |
252b5132 RH |
1631 | } |
1632 | ||
3c0d9d71 | 1633 | final_val += symp->frag->fr_address + left; |
252b5132 | 1634 | if (final_seg == expr_section || final_seg == undefined_section) |
784b640d AM |
1635 | { |
1636 | if (seg_left == undefined_section | |
1637 | || seg_right == undefined_section) | |
1638 | final_seg = undefined_section; | |
1639 | else if (seg_left == absolute_section) | |
1640 | final_seg = seg_right; | |
1641 | else | |
1642 | final_seg = seg_left; | |
1643 | } | |
49309057 ILT |
1644 | resolved = (symbol_resolved_p (add_symbol) |
1645 | && symbol_resolved_p (op_symbol)); | |
7c743825 | 1646 | break; |
252b5132 | 1647 | |
252b5132 RH |
1648 | case O_big: |
1649 | case O_illegal: | |
1650 | /* Give an error (below) if not in expr_section. We don't | |
1651 | want to worry about expr_section symbols, because they | |
1652 | are fictional (they are created as part of expression | |
1653 | resolution), and any problems may not actually mean | |
1654 | anything. */ | |
1655 | break; | |
1656 | } | |
1657 | ||
3c0d9d71 | 1658 | symp->flags.resolving = 0; |
252b5132 RH |
1659 | } |
1660 | ||
6386f3a7 | 1661 | if (finalize_syms) |
05bdb37e | 1662 | S_SET_VALUE (symp, final_val); |
252b5132 | 1663 | |
dc1e8a47 | 1664 | exit_dont_set_value: |
05bdb37e AM |
1665 | /* Always set the segment, even if not finalizing the value. |
1666 | The segment is used to determine whether a symbol is defined. */ | |
05bdb37e | 1667 | S_SET_SEGMENT (symp, final_seg); |
252b5132 | 1668 | |
252b5132 | 1669 | /* Don't worry if we can't resolve an expr_section symbol. */ |
6386f3a7 | 1670 | if (finalize_syms) |
252b5132 RH |
1671 | { |
1672 | if (resolved) | |
3c0d9d71 | 1673 | symp->flags.resolved = 1; |
252b5132 RH |
1674 | else if (S_GET_SEGMENT (symp) != expr_section) |
1675 | { | |
0e389e77 | 1676 | as_bad (_("can't resolve value for symbol `%s'"), |
7c743825 | 1677 | S_GET_NAME (symp)); |
3c0d9d71 | 1678 | symp->flags.resolved = 1; |
252b5132 RH |
1679 | } |
1680 | } | |
1681 | ||
1682 | return final_val; | |
1683 | } | |
1684 | ||
49309057 ILT |
1685 | /* A static function passed to hash_traverse. */ |
1686 | ||
d3b740ca ML |
1687 | static int |
1688 | resolve_local_symbol (void **slot, void *arg ATTRIBUTE_UNUSED) | |
49309057 | 1689 | { |
d3b740ca | 1690 | symbol_entry_t *entry = *((symbol_entry_t **) slot); |
5014c2d2 AM |
1691 | if (entry->sy.flags.local_symbol) |
1692 | resolve_symbol_value (&entry->sy); | |
d3b740ca ML |
1693 | |
1694 | return 1; | |
49309057 ILT |
1695 | } |
1696 | ||
49309057 ILT |
1697 | /* Resolve all local symbols. */ |
1698 | ||
1699 | void | |
74937d39 | 1700 | resolve_local_symbol_values (void) |
49309057 | 1701 | { |
5014c2d2 | 1702 | htab_traverse (sy_hash, resolve_local_symbol, NULL); |
49309057 ILT |
1703 | } |
1704 | ||
9497f5ac NC |
1705 | /* Obtain the current value of a symbol without changing any |
1706 | sub-expressions used. */ | |
1707 | ||
1708 | int | |
2e1e12b1 | 1709 | snapshot_symbol (symbolS **symbolPP, valueT *valueP, segT *segP, fragS **fragPP) |
9497f5ac | 1710 | { |
2e1e12b1 JB |
1711 | symbolS *symbolP = *symbolPP; |
1712 | ||
5014c2d2 | 1713 | if (symbolP->flags.local_symbol) |
9497f5ac NC |
1714 | { |
1715 | struct local_symbol *locsym = (struct local_symbol *) symbolP; | |
1716 | ||
3c0d9d71 AM |
1717 | *valueP = locsym->value; |
1718 | *segP = locsym->section; | |
5014c2d2 | 1719 | *fragPP = locsym->frag; |
9497f5ac NC |
1720 | } |
1721 | else | |
1722 | { | |
5014c2d2 | 1723 | expressionS exp = symbolP->x->value; |
9497f5ac | 1724 | |
3c0d9d71 | 1725 | if (!symbolP->flags.resolved && exp.X_op != O_illegal) |
9497f5ac NC |
1726 | { |
1727 | int resolved; | |
1728 | ||
3c0d9d71 | 1729 | if (symbolP->flags.resolving) |
9497f5ac | 1730 | return 0; |
3c0d9d71 | 1731 | symbolP->flags.resolving = 1; |
91d6fa6a | 1732 | resolved = resolve_expression (&exp); |
3c0d9d71 | 1733 | symbolP->flags.resolving = 0; |
9497f5ac NC |
1734 | if (!resolved) |
1735 | return 0; | |
1736 | ||
91d6fa6a | 1737 | switch (exp.X_op) |
9497f5ac NC |
1738 | { |
1739 | case O_constant: | |
1740 | case O_register: | |
2e1e12b1 | 1741 | if (!symbol_equated_p (symbolP)) |
9497f5ac | 1742 | break; |
2b0f3761 | 1743 | /* Fallthru. */ |
9497f5ac NC |
1744 | case O_symbol: |
1745 | case O_symbol_rva: | |
91d6fa6a | 1746 | symbolP = exp.X_add_symbol; |
9497f5ac NC |
1747 | break; |
1748 | default: | |
1749 | return 0; | |
1750 | } | |
1751 | } | |
1752 | ||
d96eea71 | 1753 | *symbolPP = symbolP; |
e78bb25c NC |
1754 | |
1755 | /* A bogus input file can result in resolve_expression() | |
1756 | generating a local symbol, so we have to check again. */ | |
5014c2d2 | 1757 | if (symbolP->flags.local_symbol) |
e78bb25c NC |
1758 | { |
1759 | struct local_symbol *locsym = (struct local_symbol *) symbolP; | |
1760 | ||
3c0d9d71 AM |
1761 | *valueP = locsym->value; |
1762 | *segP = locsym->section; | |
5014c2d2 | 1763 | *fragPP = locsym->frag; |
e78bb25c NC |
1764 | } |
1765 | else | |
1766 | { | |
1767 | *valueP = exp.X_add_number; | |
1768 | *segP = symbolP->bsym->section; | |
3c0d9d71 | 1769 | *fragPP = symbolP->frag; |
e78bb25c | 1770 | } |
9497f5ac NC |
1771 | |
1772 | if (*segP == expr_section) | |
91d6fa6a | 1773 | switch (exp.X_op) |
9497f5ac NC |
1774 | { |
1775 | case O_constant: *segP = absolute_section; break; | |
1776 | case O_register: *segP = reg_section; break; | |
1777 | default: break; | |
1778 | } | |
1779 | } | |
1780 | ||
1781 | return 1; | |
1782 | } | |
1783 | ||
252b5132 RH |
1784 | /* Dollar labels look like a number followed by a dollar sign. Eg, "42$". |
1785 | They are *really* local. That is, they go out of scope whenever we see a | |
1786 | label that isn't local. Also, like fb labels, there can be multiple | |
1787 | instances of a dollar label. Therefor, we name encode each instance with | |
1788 | the instance number, keep a list of defined symbols separate from the real | |
1789 | symbol table, and we treat these buggers as a sparse array. */ | |
1790 | ||
1791 | static long *dollar_labels; | |
1792 | static long *dollar_label_instances; | |
1793 | static char *dollar_label_defines; | |
30b940a0 AM |
1794 | static size_t dollar_label_count; |
1795 | static size_t dollar_label_max; | |
252b5132 | 1796 | |
7c743825 | 1797 | int |
74937d39 | 1798 | dollar_label_defined (long label) |
252b5132 RH |
1799 | { |
1800 | long *i; | |
1801 | ||
1802 | know ((dollar_labels != NULL) || (dollar_label_count == 0)); | |
1803 | ||
1804 | for (i = dollar_labels; i < dollar_labels + dollar_label_count; ++i) | |
1805 | if (*i == label) | |
1806 | return dollar_label_defines[i - dollar_labels]; | |
1807 | ||
7c743825 | 1808 | /* If we get here, label isn't defined. */ |
252b5132 | 1809 | return 0; |
7c743825 | 1810 | } |
252b5132 RH |
1811 | |
1812 | static long | |
74937d39 | 1813 | dollar_label_instance (long label) |
252b5132 RH |
1814 | { |
1815 | long *i; | |
1816 | ||
1817 | know ((dollar_labels != NULL) || (dollar_label_count == 0)); | |
1818 | ||
1819 | for (i = dollar_labels; i < dollar_labels + dollar_label_count; ++i) | |
1820 | if (*i == label) | |
1821 | return (dollar_label_instances[i - dollar_labels]); | |
1822 | ||
7c743825 KH |
1823 | /* If we get here, we haven't seen the label before. |
1824 | Therefore its instance count is zero. */ | |
252b5132 RH |
1825 | return 0; |
1826 | } | |
1827 | ||
7c743825 | 1828 | void |
74937d39 | 1829 | dollar_label_clear (void) |
252b5132 | 1830 | { |
30b940a0 AM |
1831 | if (dollar_label_count) |
1832 | memset (dollar_label_defines, '\0', dollar_label_count); | |
252b5132 RH |
1833 | } |
1834 | ||
1835 | #define DOLLAR_LABEL_BUMP_BY 10 | |
1836 | ||
7c743825 | 1837 | void |
74937d39 | 1838 | define_dollar_label (long label) |
252b5132 RH |
1839 | { |
1840 | long *i; | |
1841 | ||
1842 | for (i = dollar_labels; i < dollar_labels + dollar_label_count; ++i) | |
1843 | if (*i == label) | |
1844 | { | |
1845 | ++dollar_label_instances[i - dollar_labels]; | |
1846 | dollar_label_defines[i - dollar_labels] = 1; | |
1847 | return; | |
1848 | } | |
1849 | ||
7c743825 | 1850 | /* If we get to here, we don't have label listed yet. */ |
252b5132 RH |
1851 | |
1852 | if (dollar_labels == NULL) | |
1853 | { | |
325801bd TS |
1854 | dollar_labels = XNEWVEC (long, DOLLAR_LABEL_BUMP_BY); |
1855 | dollar_label_instances = XNEWVEC (long, DOLLAR_LABEL_BUMP_BY); | |
add39d23 | 1856 | dollar_label_defines = XNEWVEC (char, DOLLAR_LABEL_BUMP_BY); |
252b5132 RH |
1857 | dollar_label_max = DOLLAR_LABEL_BUMP_BY; |
1858 | dollar_label_count = 0; | |
1859 | } | |
1860 | else if (dollar_label_count == dollar_label_max) | |
1861 | { | |
1862 | dollar_label_max += DOLLAR_LABEL_BUMP_BY; | |
325801bd TS |
1863 | dollar_labels = XRESIZEVEC (long, dollar_labels, dollar_label_max); |
1864 | dollar_label_instances = XRESIZEVEC (long, dollar_label_instances, | |
1865 | dollar_label_max); | |
add39d23 TS |
1866 | dollar_label_defines = XRESIZEVEC (char, dollar_label_defines, |
1867 | dollar_label_max); | |
7c743825 | 1868 | } /* if we needed to grow */ |
252b5132 RH |
1869 | |
1870 | dollar_labels[dollar_label_count] = label; | |
1871 | dollar_label_instances[dollar_label_count] = 1; | |
1872 | dollar_label_defines[dollar_label_count] = 1; | |
1873 | ++dollar_label_count; | |
1874 | } | |
1875 | ||
7c743825 KH |
1876 | /* Caller must copy returned name: we re-use the area for the next name. |
1877 | ||
2b0f3761 | 1878 | The mth occurrence of label n: is turned into the symbol "Ln^Am" |
7c743825 KH |
1879 | where n is the label number and m is the instance number. "L" makes |
1880 | it a label discarded unless debugging and "^A"('\1') ensures no | |
1881 | ordinary symbol SHOULD get the same name as a local label | |
1882 | symbol. The first "4:" is "L4^A1" - the m numbers begin at 1. | |
1883 | ||
1884 | fb labels get the same treatment, except that ^B is used in place | |
1885 | of ^A. */ | |
1886 | ||
1887 | char * /* Return local label name. */ | |
ed9e98c2 AM |
1888 | dollar_label_name (long n, /* we just saw "n$:" : n a number. */ |
1889 | int augend /* 0 for current instance, 1 for new instance. */) | |
252b5132 RH |
1890 | { |
1891 | long i; | |
7c743825 | 1892 | /* Returned to caller, then copied. Used for created names ("4f"). */ |
252b5132 | 1893 | static char symbol_name_build[24]; |
ed9e98c2 AM |
1894 | char *p; |
1895 | char *q; | |
7c743825 | 1896 | char symbol_name_temporary[20]; /* Build up a number, BACKWARDS. */ |
252b5132 RH |
1897 | |
1898 | know (n >= 0); | |
1899 | know (augend == 0 || augend == 1); | |
1900 | p = symbol_name_build; | |
f84dd1f0 NC |
1901 | #ifdef LOCAL_LABEL_PREFIX |
1902 | *p++ = LOCAL_LABEL_PREFIX; | |
1903 | #endif | |
252b5132 RH |
1904 | *p++ = 'L'; |
1905 | ||
7c743825 KH |
1906 | /* Next code just does sprintf( {}, "%d", n); */ |
1907 | /* Label number. */ | |
252b5132 RH |
1908 | q = symbol_name_temporary; |
1909 | for (*q++ = 0, i = n; i; ++q) | |
1910 | { | |
1911 | *q = i % 10 + '0'; | |
1912 | i /= 10; | |
1913 | } | |
1914 | while ((*p = *--q) != '\0') | |
1915 | ++p; | |
1916 | ||
aa257fcd | 1917 | *p++ = DOLLAR_LABEL_CHAR; /* ^A */ |
252b5132 | 1918 | |
7c743825 | 1919 | /* Instance number. */ |
252b5132 RH |
1920 | q = symbol_name_temporary; |
1921 | for (*q++ = 0, i = dollar_label_instance (n) + augend; i; ++q) | |
1922 | { | |
1923 | *q = i % 10 + '0'; | |
1924 | i /= 10; | |
1925 | } | |
5bb3703f | 1926 | while ((*p++ = *--q) != '\0'); |
252b5132 | 1927 | |
7c743825 | 1928 | /* The label, as a '\0' ended string, starts at symbol_name_build. */ |
252b5132 RH |
1929 | return symbol_name_build; |
1930 | } | |
1931 | ||
47eebc20 | 1932 | /* Somebody else's idea of local labels. They are made by "n:" where n |
7c743825 KH |
1933 | is any decimal digit. Refer to them with |
1934 | "nb" for previous (backward) n: | |
1935 | or "nf" for next (forward) n:. | |
1936 | ||
1937 | We do a little better and let n be any number, not just a single digit, but | |
1938 | since the other guy's assembler only does ten, we treat the first ten | |
1939 | specially. | |
1940 | ||
1941 | Like someone else's assembler, we have one set of local label counters for | |
1942 | entire assembly, not one set per (sub)segment like in most assemblers. This | |
1943 | implies that one can refer to a label in another segment, and indeed some | |
1944 | crufty compilers have done just that. | |
1945 | ||
1946 | Since there could be a LOT of these things, treat them as a sparse | |
1947 | array. */ | |
252b5132 RH |
1948 | |
1949 | #define FB_LABEL_SPECIAL (10) | |
1950 | ||
1951 | static long fb_low_counter[FB_LABEL_SPECIAL]; | |
1952 | static long *fb_labels; | |
1953 | static long *fb_label_instances; | |
1954 | static long fb_label_count; | |
1955 | static long fb_label_max; | |
1956 | ||
7c743825 | 1957 | /* This must be more than FB_LABEL_SPECIAL. */ |
252b5132 RH |
1958 | #define FB_LABEL_BUMP_BY (FB_LABEL_SPECIAL + 6) |
1959 | ||
7c743825 | 1960 | static void |
74937d39 | 1961 | fb_label_init (void) |
252b5132 RH |
1962 | { |
1963 | memset ((void *) fb_low_counter, '\0', sizeof (fb_low_counter)); | |
7c743825 | 1964 | } |
252b5132 | 1965 | |
7c743825 KH |
1966 | /* Add one to the instance number of this fb label. */ |
1967 | ||
1968 | void | |
74937d39 | 1969 | fb_label_instance_inc (long label) |
252b5132 RH |
1970 | { |
1971 | long *i; | |
1972 | ||
b4e6cb80 | 1973 | if ((unsigned long) label < FB_LABEL_SPECIAL) |
252b5132 RH |
1974 | { |
1975 | ++fb_low_counter[label]; | |
1976 | return; | |
1977 | } | |
1978 | ||
1979 | if (fb_labels != NULL) | |
1980 | { | |
1981 | for (i = fb_labels + FB_LABEL_SPECIAL; | |
1982 | i < fb_labels + fb_label_count; ++i) | |
1983 | { | |
1984 | if (*i == label) | |
1985 | { | |
1986 | ++fb_label_instances[i - fb_labels]; | |
1987 | return; | |
7c743825 KH |
1988 | } /* if we find it */ |
1989 | } /* for each existing label */ | |
252b5132 RH |
1990 | } |
1991 | ||
7c743825 | 1992 | /* If we get to here, we don't have label listed yet. */ |
252b5132 RH |
1993 | |
1994 | if (fb_labels == NULL) | |
1995 | { | |
325801bd TS |
1996 | fb_labels = XNEWVEC (long, FB_LABEL_BUMP_BY); |
1997 | fb_label_instances = XNEWVEC (long, FB_LABEL_BUMP_BY); | |
252b5132 RH |
1998 | fb_label_max = FB_LABEL_BUMP_BY; |
1999 | fb_label_count = FB_LABEL_SPECIAL; | |
2000 | ||
2001 | } | |
2002 | else if (fb_label_count == fb_label_max) | |
2003 | { | |
2004 | fb_label_max += FB_LABEL_BUMP_BY; | |
325801bd TS |
2005 | fb_labels = XRESIZEVEC (long, fb_labels, fb_label_max); |
2006 | fb_label_instances = XRESIZEVEC (long, fb_label_instances, fb_label_max); | |
7c743825 | 2007 | } /* if we needed to grow */ |
252b5132 RH |
2008 | |
2009 | fb_labels[fb_label_count] = label; | |
2010 | fb_label_instances[fb_label_count] = 1; | |
2011 | ++fb_label_count; | |
2012 | } | |
2013 | ||
7c743825 | 2014 | static long |
74937d39 | 2015 | fb_label_instance (long label) |
252b5132 RH |
2016 | { |
2017 | long *i; | |
2018 | ||
b4e6cb80 | 2019 | if ((unsigned long) label < FB_LABEL_SPECIAL) |
252b5132 RH |
2020 | { |
2021 | return (fb_low_counter[label]); | |
2022 | } | |
2023 | ||
2024 | if (fb_labels != NULL) | |
2025 | { | |
2026 | for (i = fb_labels + FB_LABEL_SPECIAL; | |
2027 | i < fb_labels + fb_label_count; ++i) | |
2028 | { | |
2029 | if (*i == label) | |
2030 | { | |
2031 | return (fb_label_instances[i - fb_labels]); | |
7c743825 KH |
2032 | } /* if we find it */ |
2033 | } /* for each existing label */ | |
252b5132 RH |
2034 | } |
2035 | ||
2036 | /* We didn't find the label, so this must be a reference to the | |
2037 | first instance. */ | |
2038 | return 0; | |
2039 | } | |
2040 | ||
7c743825 KH |
2041 | /* Caller must copy returned name: we re-use the area for the next name. |
2042 | ||
2b0f3761 | 2043 | The mth occurrence of label n: is turned into the symbol "Ln^Bm" |
7c743825 KH |
2044 | where n is the label number and m is the instance number. "L" makes |
2045 | it a label discarded unless debugging and "^B"('\2') ensures no | |
2046 | ordinary symbol SHOULD get the same name as a local label | |
2047 | symbol. The first "4:" is "L4^B1" - the m numbers begin at 1. | |
2048 | ||
2049 | dollar labels get the same treatment, except that ^A is used in | |
2050 | place of ^B. */ | |
2051 | ||
2052 | char * /* Return local label name. */ | |
74937d39 KH |
2053 | fb_label_name (long n, /* We just saw "n:", "nf" or "nb" : n a number. */ |
2054 | long augend /* 0 for nb, 1 for n:, nf. */) | |
252b5132 RH |
2055 | { |
2056 | long i; | |
7c743825 | 2057 | /* Returned to caller, then copied. Used for created names ("4f"). */ |
252b5132 | 2058 | static char symbol_name_build[24]; |
ed9e98c2 AM |
2059 | char *p; |
2060 | char *q; | |
7c743825 | 2061 | char symbol_name_temporary[20]; /* Build up a number, BACKWARDS. */ |
252b5132 RH |
2062 | |
2063 | know (n >= 0); | |
a76903bf | 2064 | #ifdef TC_MMIX |
71ba24a1 | 2065 | know ((unsigned long) augend <= 2 /* See mmix_fb_label. */); |
a76903bf | 2066 | #else |
71ba24a1 | 2067 | know ((unsigned long) augend <= 1); |
a76903bf | 2068 | #endif |
252b5132 | 2069 | p = symbol_name_build; |
aa257fcd NC |
2070 | #ifdef LOCAL_LABEL_PREFIX |
2071 | *p++ = LOCAL_LABEL_PREFIX; | |
2072 | #endif | |
252b5132 RH |
2073 | *p++ = 'L'; |
2074 | ||
7c743825 KH |
2075 | /* Next code just does sprintf( {}, "%d", n); */ |
2076 | /* Label number. */ | |
252b5132 RH |
2077 | q = symbol_name_temporary; |
2078 | for (*q++ = 0, i = n; i; ++q) | |
2079 | { | |
2080 | *q = i % 10 + '0'; | |
2081 | i /= 10; | |
2082 | } | |
2083 | while ((*p = *--q) != '\0') | |
2084 | ++p; | |
2085 | ||
aa257fcd | 2086 | *p++ = LOCAL_LABEL_CHAR; /* ^B */ |
252b5132 | 2087 | |
7c743825 | 2088 | /* Instance number. */ |
252b5132 RH |
2089 | q = symbol_name_temporary; |
2090 | for (*q++ = 0, i = fb_label_instance (n) + augend; i; ++q) | |
2091 | { | |
2092 | *q = i % 10 + '0'; | |
2093 | i /= 10; | |
2094 | } | |
5bb3703f | 2095 | while ((*p++ = *--q) != '\0'); |
252b5132 | 2096 | |
7c743825 | 2097 | /* The label, as a '\0' ended string, starts at symbol_name_build. */ |
252b5132 | 2098 | return (symbol_name_build); |
7c743825 | 2099 | } |
252b5132 | 2100 | |
7c743825 KH |
2101 | /* Decode name that may have been generated by foo_label_name() above. |
2102 | If the name wasn't generated by foo_label_name(), then return it | |
2103 | unaltered. This is used for error messages. */ | |
252b5132 RH |
2104 | |
2105 | char * | |
74937d39 | 2106 | decode_local_label_name (char *s) |
252b5132 RH |
2107 | { |
2108 | char *p; | |
2109 | char *symbol_decode; | |
2110 | int label_number; | |
2111 | int instance_number; | |
cd0bbe6e | 2112 | const char *type; |
d95767bf | 2113 | const char *message_format; |
91d6fa6a | 2114 | int lindex = 0; |
43ad3147 | 2115 | |
aa257fcd | 2116 | #ifdef LOCAL_LABEL_PREFIX |
91d6fa6a NC |
2117 | if (s[lindex] == LOCAL_LABEL_PREFIX) |
2118 | ++lindex; | |
aa257fcd | 2119 | #endif |
43ad3147 | 2120 | |
91d6fa6a | 2121 | if (s[lindex] != 'L') |
252b5132 RH |
2122 | return s; |
2123 | ||
91d6fa6a | 2124 | for (label_number = 0, p = s + lindex + 1; ISDIGIT (*p); ++p) |
252b5132 RH |
2125 | label_number = (10 * label_number) + *p - '0'; |
2126 | ||
aa257fcd | 2127 | if (*p == DOLLAR_LABEL_CHAR) |
252b5132 | 2128 | type = "dollar"; |
aa257fcd | 2129 | else if (*p == LOCAL_LABEL_CHAR) |
252b5132 RH |
2130 | type = "fb"; |
2131 | else | |
2132 | return s; | |
2133 | ||
3882b010 | 2134 | for (instance_number = 0, p++; ISDIGIT (*p); ++p) |
252b5132 RH |
2135 | instance_number = (10 * instance_number) + *p - '0'; |
2136 | ||
d95767bf | 2137 | message_format = _("\"%d\" (instance number %d of a %s label)"); |
1e9cc1c2 | 2138 | symbol_decode = (char *) obstack_alloc (¬es, strlen (message_format) + 30); |
252b5132 RH |
2139 | sprintf (symbol_decode, message_format, label_number, instance_number, type); |
2140 | ||
2141 | return symbol_decode; | |
2142 | } | |
2143 | ||
2144 | /* Get the value of a symbol. */ | |
2145 | ||
2146 | valueT | |
74937d39 | 2147 | S_GET_VALUE (symbolS *s) |
252b5132 | 2148 | { |
5014c2d2 | 2149 | if (s->flags.local_symbol) |
ac62c346 | 2150 | return resolve_symbol_value (s); |
49309057 | 2151 | |
3c0d9d71 | 2152 | if (!s->flags.resolved) |
e46d99eb | 2153 | { |
6386f3a7 AM |
2154 | valueT val = resolve_symbol_value (s); |
2155 | if (!finalize_syms) | |
e46d99eb AM |
2156 | return val; |
2157 | } | |
06e77878 | 2158 | if (S_IS_WEAKREFR (s)) |
5014c2d2 | 2159 | return S_GET_VALUE (s->x->value.X_add_symbol); |
06e77878 | 2160 | |
5014c2d2 | 2161 | if (s->x->value.X_op != O_constant) |
252b5132 | 2162 | { |
3c0d9d71 | 2163 | if (! s->flags.resolved |
5014c2d2 | 2164 | || s->x->value.X_op != O_symbol |
252b5132 | 2165 | || (S_IS_DEFINED (s) && ! S_IS_COMMON (s))) |
0e389e77 | 2166 | as_bad (_("attempt to get value of unresolved symbol `%s'"), |
252b5132 | 2167 | S_GET_NAME (s)); |
252b5132 | 2168 | } |
5014c2d2 | 2169 | return (valueT) s->x->value.X_add_number; |
252b5132 RH |
2170 | } |
2171 | ||
2172 | /* Set the value of a symbol. */ | |
2173 | ||
2174 | void | |
74937d39 | 2175 | S_SET_VALUE (symbolS *s, valueT val) |
252b5132 | 2176 | { |
5014c2d2 | 2177 | if (s->flags.local_symbol) |
49309057 | 2178 | { |
3c0d9d71 | 2179 | ((struct local_symbol *) s)->value = val; |
49309057 ILT |
2180 | return; |
2181 | } | |
2182 | ||
5014c2d2 AM |
2183 | s->x->value.X_op = O_constant; |
2184 | s->x->value.X_add_number = (offsetT) val; | |
2185 | s->x->value.X_unsigned = 0; | |
06e77878 | 2186 | S_CLEAR_WEAKREFR (s); |
252b5132 RH |
2187 | } |
2188 | ||
2189 | void | |
74937d39 | 2190 | copy_symbol_attributes (symbolS *dest, symbolS *src) |
252b5132 | 2191 | { |
5014c2d2 AM |
2192 | if (dest->flags.local_symbol) |
2193 | dest = local_symbol_convert (dest); | |
2194 | if (src->flags.local_symbol) | |
2195 | src = local_symbol_convert (src); | |
49309057 | 2196 | |
252b5132 RH |
2197 | /* In an expression, transfer the settings of these flags. |
2198 | The user can override later, of course. */ | |
ad04f5ce L |
2199 | #define COPIED_SYMFLAGS (BSF_FUNCTION | BSF_OBJECT \ |
2200 | | BSF_GNU_INDIRECT_FUNCTION) | |
252b5132 | 2201 | dest->bsym->flags |= src->bsym->flags & COPIED_SYMFLAGS; |
252b5132 RH |
2202 | |
2203 | #ifdef OBJ_COPY_SYMBOL_ATTRIBUTES | |
2204 | OBJ_COPY_SYMBOL_ATTRIBUTES (dest, src); | |
2205 | #endif | |
794ba86a DJ |
2206 | |
2207 | #ifdef TC_COPY_SYMBOL_ATTRIBUTES | |
2208 | TC_COPY_SYMBOL_ATTRIBUTES (dest, src); | |
2209 | #endif | |
252b5132 RH |
2210 | } |
2211 | ||
252b5132 | 2212 | int |
74937d39 | 2213 | S_IS_FUNCTION (symbolS *s) |
252b5132 | 2214 | { |
49309057 ILT |
2215 | flagword flags; |
2216 | ||
5014c2d2 | 2217 | if (s->flags.local_symbol) |
49309057 ILT |
2218 | return 0; |
2219 | ||
2220 | flags = s->bsym->flags; | |
252b5132 RH |
2221 | |
2222 | return (flags & BSF_FUNCTION) != 0; | |
2223 | } | |
2224 | ||
2225 | int | |
74937d39 | 2226 | S_IS_EXTERNAL (symbolS *s) |
252b5132 | 2227 | { |
49309057 ILT |
2228 | flagword flags; |
2229 | ||
5014c2d2 | 2230 | if (s->flags.local_symbol) |
49309057 ILT |
2231 | return 0; |
2232 | ||
2233 | flags = s->bsym->flags; | |
252b5132 | 2234 | |
7c743825 | 2235 | /* Sanity check. */ |
252b5132 RH |
2236 | if ((flags & BSF_LOCAL) && (flags & BSF_GLOBAL)) |
2237 | abort (); | |
2238 | ||
2239 | return (flags & BSF_GLOBAL) != 0; | |
2240 | } | |
2241 | ||
2242 | int | |
74937d39 | 2243 | S_IS_WEAK (symbolS *s) |
252b5132 | 2244 | { |
5014c2d2 | 2245 | if (s->flags.local_symbol) |
49309057 | 2246 | return 0; |
06e77878 AO |
2247 | /* Conceptually, a weakrefr is weak if the referenced symbol is. We |
2248 | could probably handle a WEAKREFR as always weak though. E.g., if | |
2249 | the referenced symbol has lost its weak status, there's no reason | |
2250 | to keep handling the weakrefr as if it was weak. */ | |
2251 | if (S_IS_WEAKREFR (s)) | |
5014c2d2 | 2252 | return S_IS_WEAK (s->x->value.X_add_symbol); |
252b5132 RH |
2253 | return (s->bsym->flags & BSF_WEAK) != 0; |
2254 | } | |
2255 | ||
06e77878 AO |
2256 | int |
2257 | S_IS_WEAKREFR (symbolS *s) | |
2258 | { | |
5014c2d2 | 2259 | if (s->flags.local_symbol) |
06e77878 | 2260 | return 0; |
3c0d9d71 | 2261 | return s->flags.weakrefr != 0; |
06e77878 AO |
2262 | } |
2263 | ||
2264 | int | |
2265 | S_IS_WEAKREFD (symbolS *s) | |
2266 | { | |
5014c2d2 | 2267 | if (s->flags.local_symbol) |
06e77878 | 2268 | return 0; |
3c0d9d71 | 2269 | return s->flags.weakrefd != 0; |
06e77878 AO |
2270 | } |
2271 | ||
252b5132 | 2272 | int |
74937d39 | 2273 | S_IS_COMMON (symbolS *s) |
252b5132 | 2274 | { |
5014c2d2 | 2275 | if (s->flags.local_symbol) |
49309057 | 2276 | return 0; |
252b5132 RH |
2277 | return bfd_is_com_section (s->bsym->section); |
2278 | } | |
2279 | ||
2280 | int | |
74937d39 | 2281 | S_IS_DEFINED (symbolS *s) |
252b5132 | 2282 | { |
5014c2d2 | 2283 | if (s->flags.local_symbol) |
3c0d9d71 | 2284 | return ((struct local_symbol *) s)->section != undefined_section; |
252b5132 RH |
2285 | return s->bsym->section != undefined_section; |
2286 | } | |
2287 | ||
a161fe53 AM |
2288 | |
2289 | #ifndef EXTERN_FORCE_RELOC | |
2290 | #define EXTERN_FORCE_RELOC IS_ELF | |
2291 | #endif | |
2292 | ||
2293 | /* Return true for symbols that should not be reduced to section | |
2294 | symbols or eliminated from expressions, because they may be | |
2295 | overridden by the linker. */ | |
2296 | int | |
74937d39 | 2297 | S_FORCE_RELOC (symbolS *s, int strict) |
a161fe53 | 2298 | { |
f2d830a5 | 2299 | segT sec; |
5014c2d2 | 2300 | if (s->flags.local_symbol) |
3c0d9d71 | 2301 | sec = ((struct local_symbol *) s)->section; |
f2d830a5 AM |
2302 | else |
2303 | { | |
2304 | if ((strict | |
ae6063d4 AM |
2305 | && ((s->bsym->flags & BSF_WEAK) != 0 |
2306 | || (EXTERN_FORCE_RELOC | |
2307 | && (s->bsym->flags & BSF_GLOBAL) != 0))) | |
f2d830a5 | 2308 | || (s->bsym->flags & BSF_GNU_INDIRECT_FUNCTION) != 0) |
5b7c81bd | 2309 | return true; |
f2d830a5 AM |
2310 | sec = s->bsym->section; |
2311 | } | |
2312 | return bfd_is_und_section (sec) || bfd_is_com_section (sec); | |
a161fe53 AM |
2313 | } |
2314 | ||
252b5132 | 2315 | int |
74937d39 | 2316 | S_IS_DEBUG (symbolS *s) |
252b5132 | 2317 | { |
5014c2d2 | 2318 | if (s->flags.local_symbol) |
49309057 | 2319 | return 0; |
252b5132 RH |
2320 | if (s->bsym->flags & BSF_DEBUGGING) |
2321 | return 1; | |
2322 | return 0; | |
2323 | } | |
2324 | ||
2325 | int | |
74937d39 | 2326 | S_IS_LOCAL (symbolS *s) |
252b5132 | 2327 | { |
49309057 | 2328 | flagword flags; |
252b5132 RH |
2329 | const char *name; |
2330 | ||
5014c2d2 | 2331 | if (s->flags.local_symbol) |
49309057 ILT |
2332 | return 1; |
2333 | ||
2334 | flags = s->bsym->flags; | |
2335 | ||
7c743825 | 2336 | /* Sanity check. */ |
252b5132 RH |
2337 | if ((flags & BSF_LOCAL) && (flags & BSF_GLOBAL)) |
2338 | abort (); | |
2339 | ||
e6f7f6d1 | 2340 | if (bfd_asymbol_section (s->bsym) == reg_section) |
252b5132 RH |
2341 | return 1; |
2342 | ||
2343 | if (flag_strip_local_absolute | |
bb82af9f NC |
2344 | /* Keep BSF_FILE symbols in order to allow debuggers to identify |
2345 | the source file even when the object file is stripped. */ | |
2346 | && (flags & (BSF_GLOBAL | BSF_FILE)) == 0 | |
e6f7f6d1 | 2347 | && bfd_asymbol_section (s->bsym) == absolute_section) |
252b5132 RH |
2348 | return 1; |
2349 | ||
2350 | name = S_GET_NAME (s); | |
2351 | return (name != NULL | |
2352 | && ! S_IS_DEBUG (s) | |
aa257fcd NC |
2353 | && (strchr (name, DOLLAR_LABEL_CHAR) |
2354 | || strchr (name, LOCAL_LABEL_CHAR) | |
2469b3c5 JW |
2355 | #if FAKE_LABEL_CHAR != DOLLAR_LABEL_CHAR |
2356 | || strchr (name, FAKE_LABEL_CHAR) | |
2357 | #endif | |
df58fc94 | 2358 | || TC_LABEL_IS_LOCAL (name) |
252b5132 RH |
2359 | || (! flag_keep_locals |
2360 | && (bfd_is_local_label (stdoutput, s->bsym) | |
2361 | || (flag_mri | |
2362 | && name[0] == '?' | |
2363 | && name[1] == '?'))))); | |
2364 | } | |
2365 | ||
252b5132 | 2366 | int |
74937d39 | 2367 | S_IS_STABD (symbolS *s) |
252b5132 RH |
2368 | { |
2369 | return S_GET_NAME (s) == 0; | |
2370 | } | |
2371 | ||
6885131b AM |
2372 | int |
2373 | S_CAN_BE_REDEFINED (const symbolS *s) | |
2374 | { | |
5014c2d2 AM |
2375 | if (s->flags.local_symbol) |
2376 | return (((struct local_symbol *) s)->frag | |
6885131b AM |
2377 | == &predefined_address_frag); |
2378 | /* Permit register names to be redefined. */ | |
2379 | return s->bsym->section == reg_section; | |
2380 | } | |
2381 | ||
9497f5ac NC |
2382 | int |
2383 | S_IS_VOLATILE (const symbolS *s) | |
2384 | { | |
5014c2d2 | 2385 | if (s->flags.local_symbol) |
9497f5ac | 2386 | return 0; |
3c0d9d71 | 2387 | return s->flags.volatil; |
9497f5ac NC |
2388 | } |
2389 | ||
2390 | int | |
2391 | S_IS_FORWARD_REF (const symbolS *s) | |
2392 | { | |
5014c2d2 | 2393 | if (s->flags.local_symbol) |
9497f5ac | 2394 | return 0; |
3c0d9d71 | 2395 | return s->flags.forward_ref; |
9497f5ac NC |
2396 | } |
2397 | ||
9758f3fc | 2398 | const char * |
74937d39 | 2399 | S_GET_NAME (symbolS *s) |
252b5132 | 2400 | { |
5014c2d2 | 2401 | return s->name; |
252b5132 RH |
2402 | } |
2403 | ||
2404 | segT | |
74937d39 | 2405 | S_GET_SEGMENT (symbolS *s) |
252b5132 | 2406 | { |
5014c2d2 | 2407 | if (s->flags.local_symbol) |
3c0d9d71 | 2408 | return ((struct local_symbol *) s)->section; |
252b5132 RH |
2409 | return s->bsym->section; |
2410 | } | |
2411 | ||
2412 | void | |
74937d39 | 2413 | S_SET_SEGMENT (symbolS *s, segT seg) |
252b5132 | 2414 | { |
5014c2d2 | 2415 | if (s->flags.local_symbol) |
49309057 | 2416 | { |
5014c2d2 AM |
2417 | ((struct local_symbol *) s)->section = seg; |
2418 | return; | |
49309057 ILT |
2419 | } |
2420 | ||
5014c2d2 AM |
2421 | /* Don't reassign section symbols. The direct reason is to prevent seg |
2422 | faults assigning back to const global symbols such as *ABS*, but it | |
2423 | shouldn't happen anyway. */ | |
252b5132 RH |
2424 | if (s->bsym->flags & BSF_SECTION_SYM) |
2425 | { | |
2426 | if (s->bsym->section != seg) | |
7c743825 | 2427 | abort (); |
252b5132 RH |
2428 | } |
2429 | else | |
2430 | s->bsym->section = seg; | |
2431 | } | |
2432 | ||
2433 | void | |
74937d39 | 2434 | S_SET_EXTERNAL (symbolS *s) |
252b5132 | 2435 | { |
5014c2d2 AM |
2436 | if (s->flags.local_symbol) |
2437 | s = local_symbol_convert (s); | |
252b5132 RH |
2438 | if ((s->bsym->flags & BSF_WEAK) != 0) |
2439 | { | |
2440 | /* Let .weak override .global. */ | |
2441 | return; | |
2442 | } | |
4d7c34bf NC |
2443 | if (s->bsym->flags & BSF_SECTION_SYM) |
2444 | { | |
4d7c34bf | 2445 | /* Do not reassign section symbols. */ |
dd933805 | 2446 | as_warn (_("can't make section symbol global")); |
4d7c34bf NC |
2447 | return; |
2448 | } | |
97c4f2d9 | 2449 | #ifndef TC_GLOBAL_REGISTER_SYMBOL_OK |
d0548f34 L |
2450 | if (S_GET_SEGMENT (s) == reg_section) |
2451 | { | |
dd933805 | 2452 | as_bad (_("can't make register symbol global")); |
d0548f34 L |
2453 | return; |
2454 | } | |
97c4f2d9 | 2455 | #endif |
252b5132 | 2456 | s->bsym->flags |= BSF_GLOBAL; |
7c743825 | 2457 | s->bsym->flags &= ~(BSF_LOCAL | BSF_WEAK); |
977cdf5a | 2458 | |
22ba0981 | 2459 | #ifdef TE_PE |
977cdf5a NC |
2460 | if (! an_external_name && S_GET_NAME(s)[0] != '.') |
2461 | an_external_name = S_GET_NAME (s); | |
2462 | #endif | |
252b5132 RH |
2463 | } |
2464 | ||
2465 | void | |
74937d39 | 2466 | S_CLEAR_EXTERNAL (symbolS *s) |
252b5132 | 2467 | { |
5014c2d2 | 2468 | if (s->flags.local_symbol) |
49309057 | 2469 | return; |
252b5132 RH |
2470 | if ((s->bsym->flags & BSF_WEAK) != 0) |
2471 | { | |
2472 | /* Let .weak override. */ | |
2473 | return; | |
2474 | } | |
2475 | s->bsym->flags |= BSF_LOCAL; | |
7c743825 | 2476 | s->bsym->flags &= ~(BSF_GLOBAL | BSF_WEAK); |
252b5132 RH |
2477 | } |
2478 | ||
2479 | void | |
74937d39 | 2480 | S_SET_WEAK (symbolS *s) |
252b5132 | 2481 | { |
5014c2d2 AM |
2482 | if (s->flags.local_symbol) |
2483 | s = local_symbol_convert (s); | |
06e77878 AO |
2484 | #ifdef obj_set_weak_hook |
2485 | obj_set_weak_hook (s); | |
2486 | #endif | |
252b5132 | 2487 | s->bsym->flags |= BSF_WEAK; |
7c743825 | 2488 | s->bsym->flags &= ~(BSF_GLOBAL | BSF_LOCAL); |
252b5132 RH |
2489 | } |
2490 | ||
06e77878 AO |
2491 | void |
2492 | S_SET_WEAKREFR (symbolS *s) | |
2493 | { | |
5014c2d2 AM |
2494 | if (s->flags.local_symbol) |
2495 | s = local_symbol_convert (s); | |
3c0d9d71 | 2496 | s->flags.weakrefr = 1; |
06e77878 AO |
2497 | /* If the alias was already used, make sure we mark the target as |
2498 | used as well, otherwise it might be dropped from the symbol | |
2499 | table. This may have unintended side effects if the alias is | |
2500 | later redirected to another symbol, such as keeping the unused | |
2501 | previous target in the symbol table. Since it will be weak, it's | |
2502 | not a big deal. */ | |
3c0d9d71 | 2503 | if (s->flags.used) |
5014c2d2 | 2504 | symbol_mark_used (s->x->value.X_add_symbol); |
06e77878 AO |
2505 | } |
2506 | ||
2507 | void | |
2508 | S_CLEAR_WEAKREFR (symbolS *s) | |
2509 | { | |
5014c2d2 | 2510 | if (s->flags.local_symbol) |
06e77878 | 2511 | return; |
3c0d9d71 | 2512 | s->flags.weakrefr = 0; |
06e77878 AO |
2513 | } |
2514 | ||
2515 | void | |
2516 | S_SET_WEAKREFD (symbolS *s) | |
2517 | { | |
5014c2d2 AM |
2518 | if (s->flags.local_symbol) |
2519 | s = local_symbol_convert (s); | |
3c0d9d71 | 2520 | s->flags.weakrefd = 1; |
06e77878 AO |
2521 | S_SET_WEAK (s); |
2522 | } | |
2523 | ||
2524 | void | |
2525 | S_CLEAR_WEAKREFD (symbolS *s) | |
2526 | { | |
5014c2d2 | 2527 | if (s->flags.local_symbol) |
06e77878 | 2528 | return; |
3c0d9d71 | 2529 | if (s->flags.weakrefd) |
06e77878 | 2530 | { |
3c0d9d71 | 2531 | s->flags.weakrefd = 0; |
06e77878 AO |
2532 | /* If a weakref target symbol is weak, then it was never |
2533 | referenced directly before, not even in a .global directive, | |
2534 | so decay it to local. If it remains undefined, it will be | |
2535 | later turned into a global, like any other undefined | |
2536 | symbol. */ | |
2537 | if (s->bsym->flags & BSF_WEAK) | |
2538 | { | |
2539 | #ifdef obj_clear_weak_hook | |
2540 | obj_clear_weak_hook (s); | |
2541 | #endif | |
2542 | s->bsym->flags &= ~BSF_WEAK; | |
2543 | s->bsym->flags |= BSF_LOCAL; | |
2544 | } | |
2545 | } | |
2546 | } | |
2547 | ||
00f7efb6 | 2548 | void |
74937d39 | 2549 | S_SET_THREAD_LOCAL (symbolS *s) |
00f7efb6 | 2550 | { |
5014c2d2 AM |
2551 | if (s->flags.local_symbol) |
2552 | s = local_symbol_convert (s); | |
00f7efb6 JJ |
2553 | if (bfd_is_com_section (s->bsym->section) |
2554 | && (s->bsym->flags & BSF_THREAD_LOCAL) != 0) | |
2555 | return; | |
2556 | s->bsym->flags |= BSF_THREAD_LOCAL; | |
2557 | if ((s->bsym->flags & BSF_FUNCTION) != 0) | |
2558 | as_bad (_("Accessing function `%s' as thread-local object"), | |
2559 | S_GET_NAME (s)); | |
2560 | else if (! bfd_is_und_section (s->bsym->section) | |
2561 | && (s->bsym->section->flags & SEC_THREAD_LOCAL) == 0) | |
2562 | as_bad (_("Accessing `%s' as thread-local object"), | |
2563 | S_GET_NAME (s)); | |
2564 | } | |
2565 | ||
252b5132 | 2566 | void |
977cdf5a | 2567 | S_SET_NAME (symbolS *s, const char *name) |
252b5132 | 2568 | { |
5014c2d2 AM |
2569 | s->name = name; |
2570 | if (s->flags.local_symbol) | |
2571 | return; | |
252b5132 RH |
2572 | s->bsym->name = name; |
2573 | } | |
49309057 | 2574 | |
9497f5ac NC |
2575 | void |
2576 | S_SET_VOLATILE (symbolS *s) | |
2577 | { | |
5014c2d2 AM |
2578 | if (s->flags.local_symbol) |
2579 | s = local_symbol_convert (s); | |
3c0d9d71 | 2580 | s->flags.volatil = 1; |
9497f5ac NC |
2581 | } |
2582 | ||
92757bc9 JB |
2583 | void |
2584 | S_CLEAR_VOLATILE (symbolS *s) | |
2585 | { | |
5014c2d2 | 2586 | if (!s->flags.local_symbol) |
3c0d9d71 | 2587 | s->flags.volatil = 0; |
92757bc9 JB |
2588 | } |
2589 | ||
9497f5ac NC |
2590 | void |
2591 | S_SET_FORWARD_REF (symbolS *s) | |
2592 | { | |
5014c2d2 AM |
2593 | if (s->flags.local_symbol) |
2594 | s = local_symbol_convert (s); | |
3c0d9d71 | 2595 | s->flags.forward_ref = 1; |
9497f5ac NC |
2596 | } |
2597 | ||
49309057 ILT |
2598 | /* Return the previous symbol in a chain. */ |
2599 | ||
2600 | symbolS * | |
74937d39 | 2601 | symbol_previous (symbolS *s) |
49309057 | 2602 | { |
5014c2d2 | 2603 | if (s->flags.local_symbol) |
49309057 | 2604 | abort (); |
5014c2d2 | 2605 | return s->x->previous; |
49309057 ILT |
2606 | } |
2607 | ||
49309057 ILT |
2608 | /* Return the next symbol in a chain. */ |
2609 | ||
2610 | symbolS * | |
74937d39 | 2611 | symbol_next (symbolS *s) |
49309057 | 2612 | { |
5014c2d2 | 2613 | if (s->flags.local_symbol) |
49309057 | 2614 | abort (); |
5014c2d2 | 2615 | return s->x->next; |
49309057 ILT |
2616 | } |
2617 | ||
2618 | /* Return a pointer to the value of a symbol as an expression. */ | |
2619 | ||
2620 | expressionS * | |
74937d39 | 2621 | symbol_get_value_expression (symbolS *s) |
49309057 | 2622 | { |
5014c2d2 AM |
2623 | if (s->flags.local_symbol) |
2624 | s = local_symbol_convert (s); | |
2625 | return &s->x->value; | |
49309057 ILT |
2626 | } |
2627 | ||
2628 | /* Set the value of a symbol to an expression. */ | |
2629 | ||
2630 | void | |
74937d39 | 2631 | symbol_set_value_expression (symbolS *s, const expressionS *exp) |
49309057 | 2632 | { |
5014c2d2 AM |
2633 | if (s->flags.local_symbol) |
2634 | s = local_symbol_convert (s); | |
2635 | s->x->value = *exp; | |
06e77878 | 2636 | S_CLEAR_WEAKREFR (s); |
49309057 ILT |
2637 | } |
2638 | ||
087d837e L |
2639 | /* Return whether 2 symbols are the same. */ |
2640 | ||
2641 | int | |
2642 | symbol_same_p (symbolS *s1, symbolS *s2) | |
2643 | { | |
087d837e L |
2644 | return s1 == s2; |
2645 | } | |
2646 | ||
be95a9c1 AM |
2647 | /* Return a pointer to the X_add_number component of a symbol. */ |
2648 | ||
514d955d | 2649 | offsetT * |
be95a9c1 AM |
2650 | symbol_X_add_number (symbolS *s) |
2651 | { | |
5014c2d2 | 2652 | if (s->flags.local_symbol) |
3c0d9d71 | 2653 | return (offsetT *) &((struct local_symbol *) s)->value; |
be95a9c1 | 2654 | |
5014c2d2 | 2655 | return &s->x->value.X_add_number; |
be95a9c1 AM |
2656 | } |
2657 | ||
b7d6ed97 RH |
2658 | /* Set the value of SYM to the current position in the current segment. */ |
2659 | ||
2660 | void | |
74937d39 | 2661 | symbol_set_value_now (symbolS *sym) |
b7d6ed97 RH |
2662 | { |
2663 | S_SET_SEGMENT (sym, now_seg); | |
2664 | S_SET_VALUE (sym, frag_now_fix ()); | |
2665 | symbol_set_frag (sym, frag_now); | |
2666 | } | |
2667 | ||
49309057 ILT |
2668 | /* Set the frag of a symbol. */ |
2669 | ||
2670 | void | |
74937d39 | 2671 | symbol_set_frag (symbolS *s, fragS *f) |
49309057 | 2672 | { |
5014c2d2 | 2673 | if (s->flags.local_symbol) |
49309057 | 2674 | { |
5014c2d2 | 2675 | ((struct local_symbol *) s)->frag = f; |
49309057 ILT |
2676 | return; |
2677 | } | |
3c0d9d71 | 2678 | s->frag = f; |
06e77878 | 2679 | S_CLEAR_WEAKREFR (s); |
49309057 ILT |
2680 | } |
2681 | ||
2682 | /* Return the frag of a symbol. */ | |
2683 | ||
2684 | fragS * | |
74937d39 | 2685 | symbol_get_frag (symbolS *s) |
49309057 | 2686 | { |
5014c2d2 AM |
2687 | if (s->flags.local_symbol) |
2688 | return ((struct local_symbol *) s)->frag; | |
3c0d9d71 | 2689 | return s->frag; |
49309057 ILT |
2690 | } |
2691 | ||
2692 | /* Mark a symbol as having been used. */ | |
2693 | ||
2694 | void | |
74937d39 | 2695 | symbol_mark_used (symbolS *s) |
49309057 | 2696 | { |
5014c2d2 | 2697 | if (s->flags.local_symbol) |
49309057 | 2698 | return; |
3c0d9d71 | 2699 | s->flags.used = 1; |
06e77878 | 2700 | if (S_IS_WEAKREFR (s)) |
5014c2d2 | 2701 | symbol_mark_used (s->x->value.X_add_symbol); |
49309057 ILT |
2702 | } |
2703 | ||
2704 | /* Clear the mark of whether a symbol has been used. */ | |
2705 | ||
2706 | void | |
74937d39 | 2707 | symbol_clear_used (symbolS *s) |
49309057 | 2708 | { |
5014c2d2 AM |
2709 | if (s->flags.local_symbol) |
2710 | s = local_symbol_convert (s); | |
3c0d9d71 | 2711 | s->flags.used = 0; |
49309057 ILT |
2712 | } |
2713 | ||
2714 | /* Return whether a symbol has been used. */ | |
2715 | ||
2716 | int | |
74937d39 | 2717 | symbol_used_p (symbolS *s) |
49309057 | 2718 | { |
5014c2d2 | 2719 | if (s->flags.local_symbol) |
49309057 | 2720 | return 1; |
3c0d9d71 | 2721 | return s->flags.used; |
49309057 ILT |
2722 | } |
2723 | ||
2724 | /* Mark a symbol as having been used in a reloc. */ | |
2725 | ||
2726 | void | |
74937d39 | 2727 | symbol_mark_used_in_reloc (symbolS *s) |
49309057 | 2728 | { |
5014c2d2 AM |
2729 | if (s->flags.local_symbol) |
2730 | s = local_symbol_convert (s); | |
3c0d9d71 | 2731 | s->flags.used_in_reloc = 1; |
49309057 ILT |
2732 | } |
2733 | ||
2734 | /* Clear the mark of whether a symbol has been used in a reloc. */ | |
2735 | ||
2736 | void | |
74937d39 | 2737 | symbol_clear_used_in_reloc (symbolS *s) |
49309057 | 2738 | { |
5014c2d2 | 2739 | if (s->flags.local_symbol) |
49309057 | 2740 | return; |
3c0d9d71 | 2741 | s->flags.used_in_reloc = 0; |
49309057 ILT |
2742 | } |
2743 | ||
2744 | /* Return whether a symbol has been used in a reloc. */ | |
2745 | ||
2746 | int | |
74937d39 | 2747 | symbol_used_in_reloc_p (symbolS *s) |
49309057 | 2748 | { |
5014c2d2 | 2749 | if (s->flags.local_symbol) |
49309057 | 2750 | return 0; |
3c0d9d71 | 2751 | return s->flags.used_in_reloc; |
49309057 ILT |
2752 | } |
2753 | ||
2754 | /* Mark a symbol as an MRI common symbol. */ | |
2755 | ||
2756 | void | |
74937d39 | 2757 | symbol_mark_mri_common (symbolS *s) |
49309057 | 2758 | { |
5014c2d2 AM |
2759 | if (s->flags.local_symbol) |
2760 | s = local_symbol_convert (s); | |
3c0d9d71 | 2761 | s->flags.mri_common = 1; |
49309057 ILT |
2762 | } |
2763 | ||
2764 | /* Clear the mark of whether a symbol is an MRI common symbol. */ | |
2765 | ||
2766 | void | |
74937d39 | 2767 | symbol_clear_mri_common (symbolS *s) |
49309057 | 2768 | { |
5014c2d2 | 2769 | if (s->flags.local_symbol) |
49309057 | 2770 | return; |
3c0d9d71 | 2771 | s->flags.mri_common = 0; |
49309057 ILT |
2772 | } |
2773 | ||
2774 | /* Return whether a symbol is an MRI common symbol. */ | |
2775 | ||
2776 | int | |
74937d39 | 2777 | symbol_mri_common_p (symbolS *s) |
49309057 | 2778 | { |
5014c2d2 | 2779 | if (s->flags.local_symbol) |
49309057 | 2780 | return 0; |
3c0d9d71 | 2781 | return s->flags.mri_common; |
49309057 ILT |
2782 | } |
2783 | ||
2784 | /* Mark a symbol as having been written. */ | |
2785 | ||
2786 | void | |
74937d39 | 2787 | symbol_mark_written (symbolS *s) |
49309057 | 2788 | { |
5014c2d2 | 2789 | if (s->flags.local_symbol) |
49309057 | 2790 | return; |
3c0d9d71 | 2791 | s->flags.written = 1; |
49309057 ILT |
2792 | } |
2793 | ||
2794 | /* Clear the mark of whether a symbol has been written. */ | |
2795 | ||
2796 | void | |
74937d39 | 2797 | symbol_clear_written (symbolS *s) |
49309057 | 2798 | { |
5014c2d2 | 2799 | if (s->flags.local_symbol) |
49309057 | 2800 | return; |
3c0d9d71 | 2801 | s->flags.written = 0; |
49309057 ILT |
2802 | } |
2803 | ||
2804 | /* Return whether a symbol has been written. */ | |
2805 | ||
2806 | int | |
74937d39 | 2807 | symbol_written_p (symbolS *s) |
49309057 | 2808 | { |
5014c2d2 | 2809 | if (s->flags.local_symbol) |
49309057 | 2810 | return 0; |
3c0d9d71 | 2811 | return s->flags.written; |
49309057 ILT |
2812 | } |
2813 | ||
eb09df16 L |
2814 | /* Mark a symbol as to be removed. */ |
2815 | ||
2816 | void | |
2817 | symbol_mark_removed (symbolS *s) | |
2818 | { | |
2819 | if (s->flags.local_symbol) | |
2820 | return; | |
2821 | s->flags.removed = 1; | |
2822 | } | |
2823 | ||
2824 | /* Return whether a symbol has been marked to be removed. */ | |
2825 | ||
2826 | int | |
2827 | symbol_removed_p (symbolS *s) | |
2828 | { | |
2829 | if (s->flags.local_symbol) | |
2830 | return 0; | |
2831 | return s->flags.removed; | |
2832 | } | |
2833 | ||
49309057 ILT |
2834 | /* Mark a symbol has having been resolved. */ |
2835 | ||
2836 | void | |
74937d39 | 2837 | symbol_mark_resolved (symbolS *s) |
49309057 | 2838 | { |
3c0d9d71 | 2839 | s->flags.resolved = 1; |
49309057 ILT |
2840 | } |
2841 | ||
2842 | /* Return whether a symbol has been resolved. */ | |
2843 | ||
2844 | int | |
74937d39 | 2845 | symbol_resolved_p (symbolS *s) |
49309057 | 2846 | { |
3c0d9d71 | 2847 | return s->flags.resolved; |
49309057 ILT |
2848 | } |
2849 | ||
2850 | /* Return whether a symbol is a section symbol. */ | |
2851 | ||
2852 | int | |
5014c2d2 | 2853 | symbol_section_p (symbolS *s) |
49309057 | 2854 | { |
5014c2d2 | 2855 | if (s->flags.local_symbol) |
49309057 | 2856 | return 0; |
49309057 | 2857 | return (s->bsym->flags & BSF_SECTION_SYM) != 0; |
49309057 ILT |
2858 | } |
2859 | ||
2860 | /* Return whether a symbol is equated to another symbol. */ | |
2861 | ||
2862 | int | |
74937d39 | 2863 | symbol_equated_p (symbolS *s) |
49309057 | 2864 | { |
5014c2d2 | 2865 | if (s->flags.local_symbol) |
49309057 | 2866 | return 0; |
5014c2d2 | 2867 | return s->x->value.X_op == O_symbol; |
49309057 ILT |
2868 | } |
2869 | ||
e0890092 AM |
2870 | /* Return whether a symbol is equated to another symbol, and should be |
2871 | treated specially when writing out relocs. */ | |
2872 | ||
2873 | int | |
74937d39 | 2874 | symbol_equated_reloc_p (symbolS *s) |
e0890092 | 2875 | { |
5014c2d2 | 2876 | if (s->flags.local_symbol) |
e0890092 AM |
2877 | return 0; |
2878 | /* X_op_symbol, normally not used for O_symbol, is set by | |
2879 | resolve_symbol_value to flag expression syms that have been | |
2880 | equated. */ | |
5014c2d2 | 2881 | return (s->x->value.X_op == O_symbol |
7be1c489 | 2882 | #if defined (OBJ_COFF) && defined (TE_PE) |
977cdf5a NC |
2883 | && ! S_IS_WEAK (s) |
2884 | #endif | |
5014c2d2 | 2885 | && ((s->flags.resolved && s->x->value.X_op_symbol != NULL) |
e0890092 AM |
2886 | || ! S_IS_DEFINED (s) |
2887 | || S_IS_COMMON (s))); | |
2888 | } | |
2889 | ||
49309057 ILT |
2890 | /* Return whether a symbol has a constant value. */ |
2891 | ||
2892 | int | |
74937d39 | 2893 | symbol_constant_p (symbolS *s) |
49309057 | 2894 | { |
5014c2d2 | 2895 | if (s->flags.local_symbol) |
49309057 | 2896 | return 1; |
5014c2d2 | 2897 | return s->x->value.X_op == O_constant; |
49309057 ILT |
2898 | } |
2899 | ||
bdf128d6 JB |
2900 | /* Return whether a symbol was cloned and thus removed from the global |
2901 | symbol list. */ | |
2902 | ||
2903 | int | |
2904 | symbol_shadow_p (symbolS *s) | |
2905 | { | |
5014c2d2 | 2906 | if (s->flags.local_symbol) |
bdf128d6 | 2907 | return 0; |
5014c2d2 | 2908 | return s->x->next == s; |
bdf128d6 JB |
2909 | } |
2910 | ||
5014c2d2 | 2911 | /* If S is a struct symbol return S, otherwise return NULL. */ |
8d1015a8 AM |
2912 | |
2913 | symbolS * | |
2914 | symbol_symbolS (symbolS *s) | |
2915 | { | |
5014c2d2 | 2916 | if (s->flags.local_symbol) |
8d1015a8 AM |
2917 | return NULL; |
2918 | return s; | |
2919 | } | |
2920 | ||
49309057 ILT |
2921 | /* Return the BFD symbol for a symbol. */ |
2922 | ||
2923 | asymbol * | |
74937d39 | 2924 | symbol_get_bfdsym (symbolS *s) |
49309057 | 2925 | { |
5014c2d2 AM |
2926 | if (s->flags.local_symbol) |
2927 | s = local_symbol_convert (s); | |
49309057 ILT |
2928 | return s->bsym; |
2929 | } | |
2930 | ||
2931 | /* Set the BFD symbol for a symbol. */ | |
2932 | ||
2933 | void | |
74937d39 | 2934 | symbol_set_bfdsym (symbolS *s, asymbol *bsym) |
49309057 | 2935 | { |
5014c2d2 AM |
2936 | if (s->flags.local_symbol) |
2937 | s = local_symbol_convert (s); | |
22fe14ad NC |
2938 | /* Usually, it is harmless to reset a symbol to a BFD section |
2939 | symbol. For example, obj_elf_change_section sets the BFD symbol | |
2940 | of an old symbol with the newly created section symbol. But when | |
2941 | we have multiple sections with the same name, the newly created | |
2942 | section may have the same name as an old section. We check if the | |
2943 | old symbol has been already marked as a section symbol before | |
2944 | resetting it. */ | |
2945 | if ((s->bsym->flags & BSF_SECTION_SYM) == 0) | |
2946 | s->bsym = bsym; | |
2947 | /* else XXX - What do we do now ? */ | |
49309057 ILT |
2948 | } |
2949 | ||
49309057 ILT |
2950 | #ifdef OBJ_SYMFIELD_TYPE |
2951 | ||
2952 | /* Get a pointer to the object format information for a symbol. */ | |
2953 | ||
2954 | OBJ_SYMFIELD_TYPE * | |
74937d39 | 2955 | symbol_get_obj (symbolS *s) |
49309057 | 2956 | { |
5014c2d2 AM |
2957 | if (s->flags.local_symbol) |
2958 | s = local_symbol_convert (s); | |
2959 | return &s->x->obj; | |
49309057 ILT |
2960 | } |
2961 | ||
2962 | /* Set the object format information for a symbol. */ | |
2963 | ||
2964 | void | |
74937d39 | 2965 | symbol_set_obj (symbolS *s, OBJ_SYMFIELD_TYPE *o) |
49309057 | 2966 | { |
5014c2d2 AM |
2967 | if (s->flags.local_symbol) |
2968 | s = local_symbol_convert (s); | |
2969 | s->x->obj = *o; | |
49309057 ILT |
2970 | } |
2971 | ||
2972 | #endif /* OBJ_SYMFIELD_TYPE */ | |
2973 | ||
2974 | #ifdef TC_SYMFIELD_TYPE | |
2975 | ||
2976 | /* Get a pointer to the processor information for a symbol. */ | |
2977 | ||
2978 | TC_SYMFIELD_TYPE * | |
74937d39 | 2979 | symbol_get_tc (symbolS *s) |
49309057 | 2980 | { |
5014c2d2 AM |
2981 | if (s->flags.local_symbol) |
2982 | s = local_symbol_convert (s); | |
2983 | return &s->x->tc; | |
49309057 ILT |
2984 | } |
2985 | ||
2986 | /* Set the processor information for a symbol. */ | |
2987 | ||
2988 | void | |
74937d39 | 2989 | symbol_set_tc (symbolS *s, TC_SYMFIELD_TYPE *o) |
49309057 | 2990 | { |
5014c2d2 AM |
2991 | if (s->flags.local_symbol) |
2992 | s = local_symbol_convert (s); | |
2993 | s->x->tc = *o; | |
49309057 ILT |
2994 | } |
2995 | ||
2996 | #endif /* TC_SYMFIELD_TYPE */ | |
2997 | ||
252b5132 | 2998 | void |
74937d39 | 2999 | symbol_begin (void) |
252b5132 RH |
3000 | { |
3001 | symbol_lastP = NULL; | |
7c743825 | 3002 | symbol_rootP = NULL; /* In case we have 0 symbols (!!) */ |
d3b740ca ML |
3003 | sy_hash = htab_create_alloc (16, hash_symbol_entry, eq_symbol_entry, |
3004 | NULL, xcalloc, free); | |
252b5132 | 3005 | |
252b5132 | 3006 | #if defined (EMIT_SECTION_SYMBOLS) || !defined (RELOC_REQUIRES_SYMBOL) |
45dfa85a | 3007 | abs_symbol.bsym = bfd_abs_section_ptr->symbol; |
252b5132 | 3008 | #endif |
5014c2d2 AM |
3009 | abs_symbol.x = &abs_symbol_x; |
3010 | abs_symbol.x->value.X_op = O_constant; | |
3c0d9d71 | 3011 | abs_symbol.frag = &zero_address_frag; |
252b5132 RH |
3012 | |
3013 | if (LOCAL_LABELS_FB) | |
3014 | fb_label_init (); | |
3015 | } | |
4a826962 MR |
3016 | |
3017 | void | |
3018 | dot_symbol_init (void) | |
3019 | { | |
5014c2d2 AM |
3020 | dot_symbol.name = "."; |
3021 | dot_symbol.flags.forward_ref = 1; | |
4a826962 MR |
3022 | dot_symbol.bsym = bfd_make_empty_symbol (stdoutput); |
3023 | if (dot_symbol.bsym == NULL) | |
3024 | as_fatal ("bfd_make_empty_symbol: %s", bfd_errmsg (bfd_get_error ())); | |
3025 | dot_symbol.bsym->name = "."; | |
5014c2d2 AM |
3026 | dot_symbol.x = &dot_symbol_x; |
3027 | dot_symbol.x->value.X_op = O_constant; | |
4a826962 | 3028 | } |
252b5132 RH |
3029 | \f |
3030 | int indent_level; | |
3031 | ||
3032 | /* Maximum indent level. | |
3033 | Available for modification inside a gdb session. */ | |
87c245cc | 3034 | static int max_indent_level = 8; |
252b5132 | 3035 | |
252b5132 | 3036 | void |
74937d39 | 3037 | print_symbol_value_1 (FILE *file, symbolS *sym) |
252b5132 RH |
3038 | { |
3039 | const char *name = S_GET_NAME (sym); | |
3040 | if (!name || !name[0]) | |
3041 | name = "(unnamed)"; | |
d2df793a NC |
3042 | fprintf (file, "sym "); |
3043 | fprintf_vma (file, (bfd_vma) ((bfd_hostptr_t) sym)); | |
3044 | fprintf (file, " %s", name); | |
49309057 | 3045 | |
5014c2d2 | 3046 | if (sym->flags.local_symbol) |
49309057 ILT |
3047 | { |
3048 | struct local_symbol *locsym = (struct local_symbol *) sym; | |
d2df793a | 3049 | |
5014c2d2 AM |
3050 | if (locsym->frag != &zero_address_frag |
3051 | && locsym->frag != NULL) | |
d2df793a NC |
3052 | { |
3053 | fprintf (file, " frag "); | |
5014c2d2 | 3054 | fprintf_vma (file, (bfd_vma) ((bfd_hostptr_t) locsym->frag)); |
3c0d9d71 AM |
3055 | } |
3056 | if (locsym->flags.resolved) | |
49309057 ILT |
3057 | fprintf (file, " resolved"); |
3058 | fprintf (file, " local"); | |
3059 | } | |
3060 | else | |
3061 | { | |
3c0d9d71 | 3062 | if (sym->frag != &zero_address_frag) |
d2df793a NC |
3063 | { |
3064 | fprintf (file, " frag "); | |
3c0d9d71 | 3065 | fprintf_vma (file, (bfd_vma) ((bfd_hostptr_t) sym->frag)); |
d2df793a | 3066 | } |
3c0d9d71 | 3067 | if (sym->flags.written) |
49309057 | 3068 | fprintf (file, " written"); |
3c0d9d71 | 3069 | if (sym->flags.resolved) |
49309057 | 3070 | fprintf (file, " resolved"); |
3c0d9d71 | 3071 | else if (sym->flags.resolving) |
49309057 | 3072 | fprintf (file, " resolving"); |
3c0d9d71 | 3073 | if (sym->flags.used_in_reloc) |
49309057 | 3074 | fprintf (file, " used-in-reloc"); |
3c0d9d71 | 3075 | if (sym->flags.used) |
49309057 ILT |
3076 | fprintf (file, " used"); |
3077 | if (S_IS_LOCAL (sym)) | |
3078 | fprintf (file, " local"); | |
e97b3f28 | 3079 | if (S_IS_EXTERNAL (sym)) |
49309057 | 3080 | fprintf (file, " extern"); |
06e77878 AO |
3081 | if (S_IS_WEAK (sym)) |
3082 | fprintf (file, " weak"); | |
49309057 ILT |
3083 | if (S_IS_DEBUG (sym)) |
3084 | fprintf (file, " debug"); | |
3085 | if (S_IS_DEFINED (sym)) | |
3086 | fprintf (file, " defined"); | |
3087 | } | |
06e77878 AO |
3088 | if (S_IS_WEAKREFR (sym)) |
3089 | fprintf (file, " weakrefr"); | |
3090 | if (S_IS_WEAKREFD (sym)) | |
3091 | fprintf (file, " weakrefd"); | |
252b5132 | 3092 | fprintf (file, " %s", segment_name (S_GET_SEGMENT (sym))); |
49309057 | 3093 | if (symbol_resolved_p (sym)) |
252b5132 RH |
3094 | { |
3095 | segT s = S_GET_SEGMENT (sym); | |
3096 | ||
3097 | if (s != undefined_section | |
411863a4 | 3098 | && s != expr_section) |
0af1713e | 3099 | fprintf (file, " %lx", (unsigned long) S_GET_VALUE (sym)); |
252b5132 RH |
3100 | } |
3101 | else if (indent_level < max_indent_level | |
3102 | && S_GET_SEGMENT (sym) != undefined_section) | |
3103 | { | |
3104 | indent_level++; | |
3105 | fprintf (file, "\n%*s<", indent_level * 4, ""); | |
5014c2d2 | 3106 | if (sym->flags.local_symbol) |
49309057 | 3107 | fprintf (file, "constant %lx", |
3c0d9d71 | 3108 | (unsigned long) ((struct local_symbol *) sym)->value); |
49309057 | 3109 | else |
5014c2d2 | 3110 | print_expr_1 (file, &sym->x->value); |
252b5132 RH |
3111 | fprintf (file, ">"); |
3112 | indent_level--; | |
3113 | } | |
3114 | fflush (file); | |
3115 | } | |
3116 | ||
3117 | void | |
74937d39 | 3118 | print_symbol_value (symbolS *sym) |
252b5132 RH |
3119 | { |
3120 | indent_level = 0; | |
3121 | print_symbol_value_1 (stderr, sym); | |
3122 | fprintf (stderr, "\n"); | |
3123 | } | |
3124 | ||
3125 | static void | |
74937d39 | 3126 | print_binary (FILE *file, const char *name, expressionS *exp) |
252b5132 RH |
3127 | { |
3128 | indent_level++; | |
3129 | fprintf (file, "%s\n%*s<", name, indent_level * 4, ""); | |
3130 | print_symbol_value_1 (file, exp->X_add_symbol); | |
3131 | fprintf (file, ">\n%*s<", indent_level * 4, ""); | |
3132 | print_symbol_value_1 (file, exp->X_op_symbol); | |
3133 | fprintf (file, ">"); | |
3134 | indent_level--; | |
3135 | } | |
3136 | ||
3137 | void | |
74937d39 | 3138 | print_expr_1 (FILE *file, expressionS *exp) |
252b5132 | 3139 | { |
d2df793a NC |
3140 | fprintf (file, "expr "); |
3141 | fprintf_vma (file, (bfd_vma) ((bfd_hostptr_t) exp)); | |
3142 | fprintf (file, " "); | |
252b5132 RH |
3143 | switch (exp->X_op) |
3144 | { | |
3145 | case O_illegal: | |
3146 | fprintf (file, "illegal"); | |
3147 | break; | |
3148 | case O_absent: | |
3149 | fprintf (file, "absent"); | |
3150 | break; | |
3151 | case O_constant: | |
0af1713e | 3152 | fprintf (file, "constant %lx", (unsigned long) exp->X_add_number); |
252b5132 RH |
3153 | break; |
3154 | case O_symbol: | |
3155 | indent_level++; | |
3156 | fprintf (file, "symbol\n%*s<", indent_level * 4, ""); | |
3157 | print_symbol_value_1 (file, exp->X_add_symbol); | |
3158 | fprintf (file, ">"); | |
3159 | maybe_print_addnum: | |
3160 | if (exp->X_add_number) | |
3161 | fprintf (file, "\n%*s%lx", indent_level * 4, "", | |
0af1713e | 3162 | (unsigned long) exp->X_add_number); |
252b5132 RH |
3163 | indent_level--; |
3164 | break; | |
3165 | case O_register: | |
3166 | fprintf (file, "register #%d", (int) exp->X_add_number); | |
3167 | break; | |
3168 | case O_big: | |
3169 | fprintf (file, "big"); | |
3170 | break; | |
3171 | case O_uminus: | |
3172 | fprintf (file, "uminus -<"); | |
3173 | indent_level++; | |
3174 | print_symbol_value_1 (file, exp->X_add_symbol); | |
3175 | fprintf (file, ">"); | |
3176 | goto maybe_print_addnum; | |
3177 | case O_bit_not: | |
3178 | fprintf (file, "bit_not"); | |
3179 | break; | |
3180 | case O_multiply: | |
3181 | print_binary (file, "multiply", exp); | |
3182 | break; | |
3183 | case O_divide: | |
3184 | print_binary (file, "divide", exp); | |
3185 | break; | |
3186 | case O_modulus: | |
3187 | print_binary (file, "modulus", exp); | |
3188 | break; | |
3189 | case O_left_shift: | |
3190 | print_binary (file, "lshift", exp); | |
3191 | break; | |
3192 | case O_right_shift: | |
3193 | print_binary (file, "rshift", exp); | |
3194 | break; | |
3195 | case O_bit_inclusive_or: | |
3196 | print_binary (file, "bit_ior", exp); | |
3197 | break; | |
3198 | case O_bit_exclusive_or: | |
3199 | print_binary (file, "bit_xor", exp); | |
3200 | break; | |
3201 | case O_bit_and: | |
3202 | print_binary (file, "bit_and", exp); | |
3203 | break; | |
3204 | case O_eq: | |
3205 | print_binary (file, "eq", exp); | |
3206 | break; | |
3207 | case O_ne: | |
3208 | print_binary (file, "ne", exp); | |
3209 | break; | |
3210 | case O_lt: | |
3211 | print_binary (file, "lt", exp); | |
3212 | break; | |
3213 | case O_le: | |
3214 | print_binary (file, "le", exp); | |
3215 | break; | |
3216 | case O_ge: | |
3217 | print_binary (file, "ge", exp); | |
3218 | break; | |
3219 | case O_gt: | |
3220 | print_binary (file, "gt", exp); | |
3221 | break; | |
3222 | case O_logical_and: | |
3223 | print_binary (file, "logical_and", exp); | |
3224 | break; | |
3225 | case O_logical_or: | |
3226 | print_binary (file, "logical_or", exp); | |
3227 | break; | |
3228 | case O_add: | |
3229 | indent_level++; | |
3230 | fprintf (file, "add\n%*s<", indent_level * 4, ""); | |
3231 | print_symbol_value_1 (file, exp->X_add_symbol); | |
3232 | fprintf (file, ">\n%*s<", indent_level * 4, ""); | |
3233 | print_symbol_value_1 (file, exp->X_op_symbol); | |
3234 | fprintf (file, ">"); | |
3235 | goto maybe_print_addnum; | |
3236 | case O_subtract: | |
3237 | indent_level++; | |
3238 | fprintf (file, "subtract\n%*s<", indent_level * 4, ""); | |
3239 | print_symbol_value_1 (file, exp->X_add_symbol); | |
3240 | fprintf (file, ">\n%*s<", indent_level * 4, ""); | |
3241 | print_symbol_value_1 (file, exp->X_op_symbol); | |
3242 | fprintf (file, ">"); | |
3243 | goto maybe_print_addnum; | |
3244 | default: | |
3245 | fprintf (file, "{unknown opcode %d}", (int) exp->X_op); | |
3246 | break; | |
3247 | } | |
3248 | fflush (stdout); | |
3249 | } | |
3250 | ||
3251 | void | |
74937d39 | 3252 | print_expr (expressionS *exp) |
252b5132 RH |
3253 | { |
3254 | print_expr_1 (stderr, exp); | |
3255 | fprintf (stderr, "\n"); | |
3256 | } | |
3257 | ||
3258 | void | |
74937d39 | 3259 | symbol_print_statistics (FILE *file) |
252b5132 | 3260 | { |
d3b740ca | 3261 | htab_print_statistics (file, "symbol table", sy_hash); |
49309057 ILT |
3262 | fprintf (file, "%lu mini local symbols created, %lu converted\n", |
3263 | local_symbol_count, local_symbol_conversion_count); | |
252b5132 | 3264 | } |
280d71bf DB |
3265 | |
3266 | #ifdef OBJ_COMPLEX_RELC | |
3267 | ||
3268 | /* Convert given symbol to a new complex-relocation symbol name. This | |
6f12865c | 3269 | may be a recursive function, since it might be called for non-leaf |
280d71bf | 3270 | nodes (plain symbols) in the expression tree. The caller owns the |
6f12865c AM |
3271 | returning string, so should free it eventually. Errors are |
3272 | indicated via as_bad and a NULL return value. The given symbol | |
3c0d9d71 | 3273 | is marked with used_in_reloc. */ |
280d71bf DB |
3274 | |
3275 | char * | |
3276 | symbol_relc_make_sym (symbolS * sym) | |
3277 | { | |
3278 | char * terminal = NULL; | |
3279 | const char * sname; | |
3280 | char typetag; | |
3281 | int sname_len; | |
3282 | ||
9c2799c2 | 3283 | gas_assert (sym != NULL); |
280d71bf DB |
3284 | |
3285 | /* Recurse to symbol_relc_make_expr if this symbol | |
3286 | is defined as an expression or a plain value. */ | |
3287 | if ( S_GET_SEGMENT (sym) == expr_section | |
3288 | || S_GET_SEGMENT (sym) == absolute_section) | |
be0d3bbb | 3289 | return symbol_relc_make_expr (symbol_get_value_expression (sym)); |
280d71bf | 3290 | |
2469b3c5 | 3291 | /* This may be a "fake symbol", referring to ".". |
280d71bf DB |
3292 | Write out a special null symbol to refer to this position. */ |
3293 | if (! strcmp (S_GET_NAME (sym), FAKE_LABEL_NAME)) | |
3294 | return xstrdup ("."); | |
3295 | ||
3296 | /* We hope this is a plain leaf symbol. Construct the encoding | |
3297 | as {S,s}II...:CCCCCCC.... | |
3298 | where 'S'/'s' means section symbol / plain symbol | |
3299 | III is decimal for the symbol name length | |
3300 | CCC is the symbol name itself. */ | |
3301 | symbol_mark_used_in_reloc (sym); | |
3302 | ||
3303 | sname = S_GET_NAME (sym); | |
3304 | sname_len = strlen (sname); | |
3305 | typetag = symbol_section_p (sym) ? 'S' : 's'; | |
3306 | ||
add39d23 TS |
3307 | terminal = XNEWVEC (char, (1 /* S or s */ |
3308 | + 8 /* sname_len in decimal */ | |
3309 | + 1 /* _ spacer */ | |
3310 | + sname_len /* name itself */ | |
3311 | + 1 /* \0 */ )); | |
280d71bf DB |
3312 | |
3313 | sprintf (terminal, "%c%d:%s", typetag, sname_len, sname); | |
3314 | return terminal; | |
3315 | } | |
3316 | ||
3317 | /* Convert given value to a new complex-relocation symbol name. This | |
3318 | is a non-recursive function, since it is be called for leaf nodes | |
3319 | (plain values) in the expression tree. The caller owns the | |
3320 | returning string, so should free() it eventually. No errors. */ | |
3321 | ||
3322 | char * | |
3323 | symbol_relc_make_value (offsetT val) | |
3324 | { | |
325801bd | 3325 | char * terminal = XNEWVEC (char, 28); /* Enough for long long. */ |
280d71bf DB |
3326 | |
3327 | terminal[0] = '#'; | |
1a412f5f | 3328 | bfd_sprintf_vma (stdoutput, terminal + 1, val); |
280d71bf DB |
3329 | return terminal; |
3330 | } | |
3331 | ||
3332 | /* Convert given expression to a new complex-relocation symbol name. | |
3333 | This is a recursive function, since it traverses the entire given | |
3334 | expression tree. The caller owns the returning string, so should | |
3335 | free() it eventually. Errors are indicated via as_bad() and a NULL | |
3336 | return value. */ | |
3337 | ||
3338 | char * | |
3339 | symbol_relc_make_expr (expressionS * exp) | |
3340 | { | |
b9bb4a93 | 3341 | const char * opstr = NULL; /* Operator prefix string. */ |
280d71bf DB |
3342 | int arity = 0; /* Arity of this operator. */ |
3343 | char * operands[3]; /* Up to three operands. */ | |
3344 | char * concat_string = NULL; | |
3345 | ||
3346 | operands[0] = operands[1] = operands[2] = NULL; | |
3347 | ||
9c2799c2 | 3348 | gas_assert (exp != NULL); |
280d71bf DB |
3349 | |
3350 | /* Match known operators -> fill in opstr, arity, operands[] and fall | |
34bca508 | 3351 | through to construct subexpression fragments; may instead return |
280d71bf DB |
3352 | string directly for leaf nodes. */ |
3353 | ||
34bca508 | 3354 | /* See expr.h for the meaning of all these enums. Many operators |
280d71bf DB |
3355 | have an unnatural arity (X_add_number implicitly added). The |
3356 | conversion logic expands them to explicit "+" subexpressions. */ | |
3357 | ||
3358 | switch (exp->X_op) | |
3359 | { | |
3360 | default: | |
3361 | as_bad ("Unknown expression operator (enum %d)", exp->X_op); | |
3362 | break; | |
3363 | ||
3364 | /* Leaf nodes. */ | |
3365 | case O_constant: | |
3366 | return symbol_relc_make_value (exp->X_add_number); | |
3367 | ||
3368 | case O_symbol: | |
34bca508 L |
3369 | if (exp->X_add_number) |
3370 | { | |
3371 | arity = 2; | |
3372 | opstr = "+"; | |
280d71bf DB |
3373 | operands[0] = symbol_relc_make_sym (exp->X_add_symbol); |
3374 | operands[1] = symbol_relc_make_value (exp->X_add_number); | |
3375 | break; | |
3376 | } | |
3377 | else | |
3378 | return symbol_relc_make_sym (exp->X_add_symbol); | |
3379 | ||
3380 | /* Helper macros for nesting nodes. */ | |
3381 | ||
3c0d9d71 | 3382 | #define HANDLE_XADD_OPT1(str_) \ |
280d71bf | 3383 | if (exp->X_add_number) \ |
3c0d9d71 AM |
3384 | { \ |
3385 | arity = 2; \ | |
3386 | opstr = "+:" str_; \ | |
3387 | operands[0] = symbol_relc_make_sym (exp->X_add_symbol); \ | |
3388 | operands[1] = symbol_relc_make_value (exp->X_add_number); \ | |
3389 | break; \ | |
3390 | } \ | |
280d71bf | 3391 | else \ |
3c0d9d71 AM |
3392 | { \ |
3393 | arity = 1; \ | |
3394 | opstr = str_; \ | |
3395 | operands[0] = symbol_relc_make_sym (exp->X_add_symbol); \ | |
3396 | } \ | |
280d71bf | 3397 | break |
34bca508 | 3398 | |
3c0d9d71 | 3399 | #define HANDLE_XADD_OPT2(str_) \ |
280d71bf | 3400 | if (exp->X_add_number) \ |
3c0d9d71 AM |
3401 | { \ |
3402 | arity = 3; \ | |
3403 | opstr = "+:" str_; \ | |
3404 | operands[0] = symbol_relc_make_sym (exp->X_add_symbol); \ | |
3405 | operands[1] = symbol_relc_make_sym (exp->X_op_symbol); \ | |
3406 | operands[2] = symbol_relc_make_value (exp->X_add_number); \ | |
3407 | } \ | |
280d71bf | 3408 | else \ |
3c0d9d71 AM |
3409 | { \ |
3410 | arity = 2; \ | |
3411 | opstr = str_; \ | |
3412 | operands[0] = symbol_relc_make_sym (exp->X_add_symbol); \ | |
3413 | operands[1] = symbol_relc_make_sym (exp->X_op_symbol); \ | |
3414 | } \ | |
280d71bf DB |
3415 | break |
3416 | ||
3417 | /* Nesting nodes. */ | |
3418 | ||
3c0d9d71 AM |
3419 | case O_uminus: HANDLE_XADD_OPT1 ("0-"); |
3420 | case O_bit_not: HANDLE_XADD_OPT1 ("~"); | |
3421 | case O_logical_not: HANDLE_XADD_OPT1 ("!"); | |
3422 | case O_multiply: HANDLE_XADD_OPT2 ("*"); | |
3423 | case O_divide: HANDLE_XADD_OPT2 ("/"); | |
3424 | case O_modulus: HANDLE_XADD_OPT2 ("%"); | |
3425 | case O_left_shift: HANDLE_XADD_OPT2 ("<<"); | |
3426 | case O_right_shift: HANDLE_XADD_OPT2 (">>"); | |
280d71bf DB |
3427 | case O_bit_inclusive_or: HANDLE_XADD_OPT2 ("|"); |
3428 | case O_bit_exclusive_or: HANDLE_XADD_OPT2 ("^"); | |
3c0d9d71 AM |
3429 | case O_bit_and: HANDLE_XADD_OPT2 ("&"); |
3430 | case O_add: HANDLE_XADD_OPT2 ("+"); | |
3431 | case O_subtract: HANDLE_XADD_OPT2 ("-"); | |
3432 | case O_eq: HANDLE_XADD_OPT2 ("=="); | |
3433 | case O_ne: HANDLE_XADD_OPT2 ("!="); | |
3434 | case O_lt: HANDLE_XADD_OPT2 ("<"); | |
3435 | case O_le: HANDLE_XADD_OPT2 ("<="); | |
3436 | case O_ge: HANDLE_XADD_OPT2 (">="); | |
3437 | case O_gt: HANDLE_XADD_OPT2 (">"); | |
3438 | case O_logical_and: HANDLE_XADD_OPT2 ("&&"); | |
3439 | case O_logical_or: HANDLE_XADD_OPT2 ("||"); | |
280d71bf DB |
3440 | } |
3441 | ||
3442 | /* Validate & reject early. */ | |
3443 | if (arity >= 1 && ((operands[0] == NULL) || (strlen (operands[0]) == 0))) | |
3444 | opstr = NULL; | |
3445 | if (arity >= 2 && ((operands[1] == NULL) || (strlen (operands[1]) == 0))) | |
3446 | opstr = NULL; | |
3447 | if (arity >= 3 && ((operands[2] == NULL) || (strlen (operands[2]) == 0))) | |
3448 | opstr = NULL; | |
3449 | ||
3450 | if (opstr == NULL) | |
3451 | concat_string = NULL; | |
29a2809e TS |
3452 | else if (arity == 0) |
3453 | concat_string = xstrdup (opstr); | |
3454 | else if (arity == 1) | |
3455 | concat_string = concat (opstr, ":", operands[0], (char *) NULL); | |
3456 | else if (arity == 2) | |
3457 | concat_string = concat (opstr, ":", operands[0], ":", operands[1], | |
3458 | (char *) NULL); | |
280d71bf | 3459 | else |
29a2809e TS |
3460 | concat_string = concat (opstr, ":", operands[0], ":", operands[1], ":", |
3461 | operands[2], (char *) NULL); | |
280d71bf DB |
3462 | |
3463 | /* Free operand strings (not opstr). */ | |
3464 | if (arity >= 1) xfree (operands[0]); | |
3465 | if (arity >= 2) xfree (operands[1]); | |
3466 | if (arity >= 3) xfree (operands[2]); | |
3467 | ||
3468 | return concat_string; | |
3469 | } | |
3470 | ||
3471 | #endif |