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252b5132 | 1 | /* symbols.c -symbol table- |
b3adc24a | 2 | Copyright (C) 1987-2020 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 AM |
29 | #ifdef HAVE_LIMITS_H |
30 | #include <limits.h> | |
31 | #endif | |
32 | #ifndef CHAR_BIT | |
33 | #define CHAR_BIT 8 | |
34 | #endif | |
35 | ||
8d1015a8 AM |
36 | struct symbol_flags |
37 | { | |
38 | /* Whether the symbol is a local_symbol. */ | |
3c0d9d71 | 39 | unsigned int local_symbol : 1; |
8d1015a8 AM |
40 | |
41 | /* Weather symbol has been written. */ | |
3c0d9d71 | 42 | unsigned int written : 1; |
8d1015a8 AM |
43 | |
44 | /* Whether symbol value has been completely resolved (used during | |
45 | final pass over symbol table). */ | |
3c0d9d71 | 46 | unsigned int resolved : 1; |
8d1015a8 AM |
47 | |
48 | /* Whether the symbol value is currently being resolved (used to | |
49 | detect loops in symbol dependencies). */ | |
3c0d9d71 | 50 | unsigned int resolving : 1; |
8d1015a8 AM |
51 | |
52 | /* Whether the symbol value is used in a reloc. This is used to | |
53 | ensure that symbols used in relocs are written out, even if they | |
54 | are local and would otherwise not be. */ | |
3c0d9d71 | 55 | unsigned int used_in_reloc : 1; |
8d1015a8 AM |
56 | |
57 | /* Whether the symbol is used as an operand or in an expression. | |
58 | NOTE: Not all the backends keep this information accurate; | |
59 | backends which use this bit are responsible for setting it when | |
60 | a symbol is used in backend routines. */ | |
3c0d9d71 | 61 | unsigned int used : 1; |
8d1015a8 AM |
62 | |
63 | /* Whether the symbol can be re-defined. */ | |
3c0d9d71 | 64 | unsigned int volatil : 1; |
8d1015a8 AM |
65 | |
66 | /* Whether the symbol is a forward reference. */ | |
3c0d9d71 | 67 | unsigned int forward_ref : 1; |
8d1015a8 AM |
68 | |
69 | /* This is set if the symbol is defined in an MRI common section. | |
70 | We handle such sections as single common symbols, so symbols | |
71 | defined within them must be treated specially by the relocation | |
72 | routines. */ | |
3c0d9d71 | 73 | unsigned int mri_common : 1; |
8d1015a8 AM |
74 | |
75 | /* This is set if the symbol is set with a .weakref directive. */ | |
3c0d9d71 | 76 | unsigned int weakrefr : 1; |
8d1015a8 AM |
77 | |
78 | /* This is set when the symbol is referenced as part of a .weakref | |
79 | directive, but only if the symbol was not in the symbol table | |
80 | before. It is cleared as soon as any direct reference to the | |
81 | symbol is present. */ | |
3c0d9d71 | 82 | unsigned int weakrefd : 1; |
8d1015a8 AM |
83 | }; |
84 | ||
85 | /* A pointer in the symbol may point to either a complete symbol | |
3c0d9d71 | 86 | (struct symbol below) or to a local symbol (struct local_symbol |
8d1015a8 | 87 | defined here). The symbol code can detect the case by examining |
2a50b401 | 88 | the first field which is present in both structs. |
8d1015a8 AM |
89 | |
90 | We do this because we ordinarily only need a small amount of | |
91 | information for a local symbol. The symbol table takes up a lot of | |
92 | space, and storing less information for a local symbol can make a | |
93 | big difference in assembler memory usage when assembling a large | |
94 | file. */ | |
95 | ||
96 | struct local_symbol | |
97 | { | |
3c0d9d71 AM |
98 | /* Symbol flags. Only local_symbol and resolved are relevant. */ |
99 | struct symbol_flags flags; | |
8d1015a8 | 100 | |
5014c2d2 AM |
101 | /* Hash value calculated from name. */ |
102 | hashval_t hash; | |
8d1015a8 AM |
103 | |
104 | /* The symbol name. */ | |
3c0d9d71 | 105 | const char *name; |
8d1015a8 | 106 | |
5014c2d2 AM |
107 | /* The symbol frag. */ |
108 | fragS *frag; | |
109 | ||
110 | /* The symbol section. */ | |
111 | asection *section; | |
8d1015a8 AM |
112 | |
113 | /* The value of the symbol. */ | |
3c0d9d71 AM |
114 | valueT value; |
115 | }; | |
8d1015a8 | 116 | |
5014c2d2 AM |
117 | /* The information we keep for a symbol. The symbol table holds |
118 | pointers both to this and to local_symbol structures. The first | |
119 | three fields must be identical to struct local_symbol, and the size | |
120 | should be the same as or smaller than struct local_symbol. | |
121 | Fields that don't fit go to an extension structure. */ | |
3c0d9d71 AM |
122 | |
123 | struct symbol | |
124 | { | |
125 | /* Symbol flags. */ | |
126 | struct symbol_flags flags; | |
127 | ||
5014c2d2 AM |
128 | /* Hash value calculated from name. */ |
129 | hashval_t hash; | |
130 | ||
131 | /* The symbol name. */ | |
132 | const char *name; | |
133 | ||
134 | /* Pointer to the frag this symbol is attached to, if any. | |
135 | Otherwise, NULL. */ | |
136 | fragS *frag; | |
137 | ||
3c0d9d71 AM |
138 | /* BFD symbol */ |
139 | asymbol *bsym; | |
140 | ||
5014c2d2 AM |
141 | /* Extra symbol fields that won't fit. */ |
142 | struct xsymbol *x; | |
143 | }; | |
144 | ||
145 | /* Extra fields to make up a full symbol. */ | |
146 | ||
147 | struct xsymbol | |
148 | { | |
3c0d9d71 AM |
149 | /* The value of the symbol. */ |
150 | expressionS value; | |
151 | ||
152 | /* Forwards and backwards chain pointers. */ | |
153 | struct symbol *next; | |
154 | struct symbol *previous; | |
155 | ||
3c0d9d71 AM |
156 | #ifdef OBJ_SYMFIELD_TYPE |
157 | OBJ_SYMFIELD_TYPE obj; | |
158 | #endif | |
159 | ||
160 | #ifdef TC_SYMFIELD_TYPE | |
161 | TC_SYMFIELD_TYPE tc; | |
8d1015a8 AM |
162 | #endif |
163 | }; | |
164 | ||
5014c2d2 | 165 | typedef union symbol_entry |
d3b740ca | 166 | { |
5014c2d2 AM |
167 | struct local_symbol lsy; |
168 | struct symbol sy; | |
169 | } symbol_entry_t; | |
d3b740ca ML |
170 | |
171 | /* Hash function for a symbol_entry. */ | |
172 | ||
173 | static hashval_t | |
174 | hash_symbol_entry (const void *e) | |
175 | { | |
176 | symbol_entry_t *entry = (symbol_entry_t *) e; | |
5014c2d2 AM |
177 | if (entry->sy.hash == 0) |
178 | entry->sy.hash = htab_hash_string (entry->sy.name); | |
d3b740ca | 179 | |
5014c2d2 | 180 | return entry->sy.hash; |
d3b740ca ML |
181 | } |
182 | ||
183 | /* Equality function for a symbol_entry. */ | |
184 | ||
185 | static int | |
186 | eq_symbol_entry (const void *a, const void *b) | |
187 | { | |
188 | const symbol_entry_t *ea = (const symbol_entry_t *) a; | |
189 | const symbol_entry_t *eb = (const symbol_entry_t *) b; | |
190 | ||
5014c2d2 AM |
191 | return (ea->sy.hash == eb->sy.hash |
192 | && strcmp (ea->sy.name, eb->sy.name) == 0); | |
d3b740ca ML |
193 | } |
194 | ||
195 | static void * | |
5014c2d2 | 196 | symbol_entry_find (htab_t table, const char *name) |
d3b740ca | 197 | { |
5014c2d2 AM |
198 | hashval_t hash = htab_hash_string (name); |
199 | symbol_entry_t needle = { { { 0 }, hash, name, 0, 0, 0 } }; | |
200 | return htab_find_with_hash (table, &needle, hash); | |
d3b740ca ML |
201 | } |
202 | ||
203 | ||
252b5132 RH |
204 | /* This is non-zero if symbols are case sensitive, which is the |
205 | default. */ | |
206 | int symbols_case_sensitive = 1; | |
207 | ||
208 | #ifndef WORKING_DOT_WORD | |
209 | extern int new_broken_words; | |
210 | #endif | |
211 | ||
d3b740ca | 212 | static htab_t sy_hash; |
252b5132 | 213 | |
7c743825 | 214 | /* Below are commented in "symbols.h". */ |
252b5132 RH |
215 | symbolS *symbol_rootP; |
216 | symbolS *symbol_lastP; | |
217 | symbolS abs_symbol; | |
5014c2d2 | 218 | struct xsymbol abs_symbol_x; |
4a826962 | 219 | symbolS dot_symbol; |
5014c2d2 | 220 | struct xsymbol dot_symbol_x; |
252b5132 RH |
221 | |
222 | #ifdef DEBUG_SYMS | |
223 | #define debug_verify_symchain verify_symbol_chain | |
224 | #else | |
225 | #define debug_verify_symchain(root, last) ((void) 0) | |
226 | #endif | |
227 | ||
aa257fcd NC |
228 | #define DOLLAR_LABEL_CHAR '\001' |
229 | #define LOCAL_LABEL_CHAR '\002' | |
230 | ||
df58fc94 RS |
231 | #ifndef TC_LABEL_IS_LOCAL |
232 | #define TC_LABEL_IS_LOCAL(name) 0 | |
233 | #endif | |
234 | ||
252b5132 | 235 | struct obstack notes; |
22ba0981 | 236 | #ifdef TE_PE |
977cdf5a NC |
237 | /* The name of an external symbol which is |
238 | used to make weak PE symbol names unique. */ | |
239 | const char * an_external_name; | |
240 | #endif | |
252b5132 | 241 | |
b9bb4a93 | 242 | static const char *save_symbol_name (const char *); |
74937d39 KH |
243 | static void fb_label_init (void); |
244 | static long dollar_label_instance (long); | |
245 | static long fb_label_instance (long); | |
252b5132 | 246 | |
74937d39 | 247 | static void print_binary (FILE *, const char *, expressionS *); |
252b5132 | 248 | |
7c743825 | 249 | /* Return a pointer to a new symbol. Die if we can't make a new |
252b5132 RH |
250 | symbol. Fill in the symbol's values. Add symbol to end of symbol |
251 | chain. | |
7c743825 | 252 | |
252b5132 RH |
253 | This function should be called in the general case of creating a |
254 | symbol. However, if the output file symbol table has already been | |
255 | set, and you are certain that this symbol won't be wanted in the | |
256 | output file, you can call symbol_create. */ | |
257 | ||
258 | symbolS * | |
e01e1cee | 259 | symbol_new (const char *name, segT segment, fragS *frag, valueT valu) |
252b5132 | 260 | { |
e01e1cee | 261 | symbolS *symbolP = symbol_create (name, segment, frag, valu); |
252b5132 | 262 | |
7c743825 | 263 | /* Link to end of symbol chain. */ |
252b5132 RH |
264 | symbol_append (symbolP, symbol_lastP, &symbol_rootP, &symbol_lastP); |
265 | ||
266 | return symbolP; | |
267 | } | |
268 | ||
49309057 ILT |
269 | /* Save a symbol name on a permanent obstack, and convert it according |
270 | to the object file format. */ | |
271 | ||
b9bb4a93 | 272 | static const char * |
74937d39 | 273 | save_symbol_name (const char *name) |
252b5132 | 274 | { |
e57e6ddc | 275 | size_t name_length; |
49309057 | 276 | char *ret; |
252b5132 | 277 | |
0df8ad28 | 278 | gas_assert (name != NULL); |
7c743825 | 279 | name_length = strlen (name) + 1; /* +1 for \0. */ |
252b5132 | 280 | obstack_grow (¬es, name, name_length); |
1e9cc1c2 | 281 | ret = (char *) obstack_finish (¬es); |
49309057 | 282 | |
252b5132 | 283 | #ifdef tc_canonicalize_symbol_name |
49309057 | 284 | ret = tc_canonicalize_symbol_name (ret); |
252b5132 RH |
285 | #endif |
286 | ||
287 | if (! symbols_case_sensitive) | |
288 | { | |
3882b010 | 289 | char *s; |
252b5132 | 290 | |
3882b010 L |
291 | for (s = ret; *s != '\0'; s++) |
292 | *s = TOUPPER (*s); | |
252b5132 RH |
293 | } |
294 | ||
49309057 ILT |
295 | return ret; |
296 | } | |
297 | ||
5014c2d2 AM |
298 | static void |
299 | symbol_init (symbolS *symbolP, const char *name, asection *sec, | |
300 | fragS *frag, valueT valu) | |
49309057 | 301 | { |
5014c2d2 | 302 | symbolP->frag = frag; |
252b5132 RH |
303 | symbolP->bsym = bfd_make_empty_symbol (stdoutput); |
304 | if (symbolP->bsym == NULL) | |
885afe7b | 305 | as_fatal ("bfd_make_empty_symbol: %s", bfd_errmsg (bfd_get_error ())); |
5014c2d2 AM |
306 | symbolP->bsym->name = name; |
307 | symbolP->bsym->section = sec; | |
252b5132 | 308 | |
252b5132 | 309 | S_SET_VALUE (symbolP, valu); |
252b5132 | 310 | |
5014c2d2 | 311 | symbol_clear_list_pointers (symbolP); |
252b5132 RH |
312 | |
313 | obj_symbol_new_hook (symbolP); | |
314 | ||
315 | #ifdef tc_symbol_new_hook | |
316 | tc_symbol_new_hook (symbolP); | |
317 | #endif | |
5014c2d2 AM |
318 | } |
319 | ||
320 | /* Create a symbol. NAME is copied, the caller can destroy/modify. */ | |
321 | ||
322 | symbolS * | |
323 | symbol_create (const char *name, segT segment, fragS *frag, valueT valu) | |
324 | { | |
325 | const char *preserved_copy_of_name; | |
326 | symbolS *symbolP; | |
327 | size_t size; | |
328 | ||
329 | preserved_copy_of_name = save_symbol_name (name); | |
330 | ||
331 | size = sizeof (symbolS) + sizeof (struct xsymbol); | |
332 | symbolP = (symbolS *) obstack_alloc (¬es, size); | |
333 | ||
334 | /* symbol must be born in some fixed state. This seems as good as any. */ | |
335 | memset (symbolP, 0, size); | |
336 | symbolP->name = preserved_copy_of_name; | |
337 | symbolP->x = (struct xsymbol *) (symbolP + 1); | |
338 | ||
339 | symbol_init (symbolP, preserved_copy_of_name, segment, frag, valu); | |
252b5132 RH |
340 | |
341 | return symbolP; | |
342 | } | |
343 | \f | |
49309057 ILT |
344 | |
345 | /* Local symbol support. If we can get away with it, we keep only a | |
346 | small amount of information for local symbols. */ | |
347 | ||
49309057 ILT |
348 | /* Used for statistics. */ |
349 | ||
350 | static unsigned long local_symbol_count; | |
351 | static unsigned long local_symbol_conversion_count; | |
352 | ||
49309057 ILT |
353 | /* Create a local symbol and insert it into the local hash table. */ |
354 | ||
00ce9deb | 355 | struct local_symbol * |
e01e1cee | 356 | local_symbol_make (const char *name, segT section, fragS *frag, valueT val) |
49309057 | 357 | { |
b9bb4a93 | 358 | const char *name_copy; |
49309057 | 359 | struct local_symbol *ret; |
3c0d9d71 | 360 | struct symbol_flags flags = { .local_symbol = 1, .resolved = 0 }; |
49309057 ILT |
361 | |
362 | ++local_symbol_count; | |
363 | ||
364 | name_copy = save_symbol_name (name); | |
365 | ||
1e9cc1c2 | 366 | ret = (struct local_symbol *) obstack_alloc (¬es, sizeof *ret); |
3c0d9d71 | 367 | ret->flags = flags; |
5014c2d2 | 368 | ret->hash = 0; |
3c0d9d71 | 369 | ret->name = name_copy; |
5014c2d2 | 370 | ret->frag = frag; |
3c0d9d71 | 371 | ret->section = section; |
3c0d9d71 | 372 | ret->value = val; |
49309057 | 373 | |
fe0e921f | 374 | htab_insert (sy_hash, ret, 1); |
49309057 ILT |
375 | |
376 | return ret; | |
377 | } | |
378 | ||
5014c2d2 | 379 | /* Convert a local symbol into a real symbol. */ |
49309057 ILT |
380 | |
381 | static symbolS * | |
5014c2d2 | 382 | local_symbol_convert (void *sym) |
49309057 | 383 | { |
5014c2d2 AM |
384 | symbol_entry_t *ent = (symbol_entry_t *) sym; |
385 | struct xsymbol *xtra; | |
386 | valueT val; | |
49309057 | 387 | |
5014c2d2 | 388 | gas_assert (ent->lsy.flags.local_symbol); |
49309057 ILT |
389 | |
390 | ++local_symbol_conversion_count; | |
391 | ||
85d14aae AM |
392 | xtra = (struct xsymbol *) obstack_alloc (¬es, sizeof (*xtra)); |
393 | memset (xtra, 0, sizeof (*xtra)); | |
5014c2d2 AM |
394 | val = ent->lsy.value; |
395 | ent->sy.x = xtra; | |
49309057 ILT |
396 | |
397 | /* Local symbols are always either defined or used. */ | |
5014c2d2 AM |
398 | ent->sy.flags.used = 1; |
399 | ent->sy.flags.local_symbol = 0; | |
49309057 | 400 | |
5014c2d2 AM |
401 | symbol_init (&ent->sy, ent->lsy.name, ent->lsy.section, ent->lsy.frag, val); |
402 | symbol_append (&ent->sy, symbol_lastP, &symbol_rootP, &symbol_lastP); | |
49309057 | 403 | |
5014c2d2 | 404 | return &ent->sy; |
49309057 | 405 | } |
49309057 | 406 | \f |
a3371076 AM |
407 | static void |
408 | define_sym_at_dot (symbolS *symbolP) | |
409 | { | |
3c0d9d71 | 410 | symbolP->frag = frag_now; |
a3371076 AM |
411 | S_SET_VALUE (symbolP, (valueT) frag_now_fix ()); |
412 | S_SET_SEGMENT (symbolP, now_seg); | |
413 | } | |
414 | ||
7c743825 KH |
415 | /* We have just seen "<name>:". |
416 | Creates a struct symbol unless it already exists. | |
417 | ||
418 | Gripes if we are redefining a symbol incompatibly (and ignores it). */ | |
252b5132 | 419 | |
252b5132 | 420 | symbolS * |
74937d39 | 421 | colon (/* Just seen "x:" - rattle symbols & frags. */ |
2b0f3761 | 422 | const char *sym_name /* Symbol name, as a canonical string. */ |
74937d39 | 423 | /* We copy this string: OK to alter later. */) |
252b5132 | 424 | { |
ed9e98c2 | 425 | symbolS *symbolP; /* Symbol we are working with. */ |
252b5132 | 426 | |
7cf10893 | 427 | /* Sun local labels go out of scope whenever a non-local symbol is |
252b5132 | 428 | defined. */ |
7be1c489 AM |
429 | if (LOCAL_LABELS_DOLLAR |
430 | && !bfd_is_local_label_name (stdoutput, sym_name)) | |
431 | dollar_label_clear (); | |
252b5132 RH |
432 | |
433 | #ifndef WORKING_DOT_WORD | |
434 | if (new_broken_words) | |
435 | { | |
436 | struct broken_word *a; | |
437 | int possible_bytes; | |
438 | fragS *frag_tmp; | |
439 | char *frag_opcode; | |
440 | ||
7cf10893 NC |
441 | if (now_seg == absolute_section) |
442 | { | |
443 | as_bad (_("cannot define symbol `%s' in absolute section"), sym_name); | |
444 | return NULL; | |
445 | } | |
1d3b2b27 | 446 | |
252b5132 RH |
447 | possible_bytes = (md_short_jump_size |
448 | + new_broken_words * md_long_jump_size); | |
449 | ||
450 | frag_tmp = frag_now; | |
451 | frag_opcode = frag_var (rs_broken_word, | |
452 | possible_bytes, | |
453 | possible_bytes, | |
454 | (relax_substateT) 0, | |
455 | (symbolS *) broken_words, | |
456 | (offsetT) 0, | |
457 | NULL); | |
458 | ||
7c743825 KH |
459 | /* We want to store the pointer to where to insert the jump |
460 | table in the fr_opcode of the rs_broken_word frag. This | |
461 | requires a little hackery. */ | |
252b5132 RH |
462 | while (frag_tmp |
463 | && (frag_tmp->fr_type != rs_broken_word | |
464 | || frag_tmp->fr_opcode)) | |
465 | frag_tmp = frag_tmp->fr_next; | |
466 | know (frag_tmp); | |
467 | frag_tmp->fr_opcode = frag_opcode; | |
468 | new_broken_words = 0; | |
469 | ||
470 | for (a = broken_words; a && a->dispfrag == 0; a = a->next_broken_word) | |
471 | a->dispfrag = frag_tmp; | |
472 | } | |
473 | #endif /* WORKING_DOT_WORD */ | |
474 | ||
cdaa5616 IS |
475 | #ifdef obj_frob_colon |
476 | obj_frob_colon (sym_name); | |
477 | #endif | |
478 | ||
252b5132 RH |
479 | if ((symbolP = symbol_find (sym_name)) != 0) |
480 | { | |
06e77878 | 481 | S_CLEAR_WEAKREFR (symbolP); |
252b5132 RH |
482 | #ifdef RESOLVE_SYMBOL_REDEFINITION |
483 | if (RESOLVE_SYMBOL_REDEFINITION (symbolP)) | |
484 | return symbolP; | |
485 | #endif | |
7c743825 | 486 | /* Now check for undefined symbols. */ |
5014c2d2 | 487 | if (symbolP->flags.local_symbol) |
49309057 ILT |
488 | { |
489 | struct local_symbol *locsym = (struct local_symbol *) symbolP; | |
490 | ||
3c0d9d71 | 491 | if (locsym->section != undefined_section |
5014c2d2 | 492 | && (locsym->frag != frag_now |
3c0d9d71 AM |
493 | || locsym->section != now_seg |
494 | || locsym->value != frag_now_fix ())) | |
49309057 | 495 | { |
0e389e77 | 496 | as_bad (_("symbol `%s' is already defined"), sym_name); |
49309057 ILT |
497 | return symbolP; |
498 | } | |
499 | ||
3c0d9d71 | 500 | locsym->section = now_seg; |
5014c2d2 | 501 | locsym->frag = frag_now; |
3c0d9d71 | 502 | locsym->value = frag_now_fix (); |
49309057 | 503 | } |
b54788f8 | 504 | else if (!(S_IS_DEFINED (symbolP) || symbol_equated_p (symbolP)) |
92757bc9 JB |
505 | || S_IS_COMMON (symbolP) |
506 | || S_IS_VOLATILE (symbolP)) | |
252b5132 | 507 | { |
89cdfe57 | 508 | if (S_IS_VOLATILE (symbolP)) |
92757bc9 JB |
509 | { |
510 | symbolP = symbol_clone (symbolP, 1); | |
511 | S_SET_VALUE (symbolP, 0); | |
512 | S_CLEAR_VOLATILE (symbolP); | |
513 | } | |
252b5132 RH |
514 | if (S_GET_VALUE (symbolP) == 0) |
515 | { | |
a3371076 | 516 | define_sym_at_dot (symbolP); |
252b5132 RH |
517 | #ifdef N_UNDF |
518 | know (N_UNDF == 0); | |
7c743825 | 519 | #endif /* if we have one, it better be zero. */ |
252b5132 RH |
520 | |
521 | } | |
522 | else | |
523 | { | |
7c743825 KH |
524 | /* There are still several cases to check: |
525 | ||
526 | A .comm/.lcomm symbol being redefined as initialized | |
527 | data is OK | |
528 | ||
529 | A .comm/.lcomm symbol being redefined with a larger | |
530 | size is also OK | |
531 | ||
532 | This only used to be allowed on VMS gas, but Sun cc | |
533 | on the sparc also depends on it. */ | |
252b5132 RH |
534 | |
535 | if (((!S_IS_DEBUG (symbolP) | |
536 | && (!S_IS_DEFINED (symbolP) || S_IS_COMMON (symbolP)) | |
537 | && S_IS_EXTERNAL (symbolP)) | |
538 | || S_GET_SEGMENT (symbolP) == bss_section) | |
539 | && (now_seg == data_section | |
b3ce1bf7 | 540 | || now_seg == bss_section |
252b5132 RH |
541 | || now_seg == S_GET_SEGMENT (symbolP))) |
542 | { | |
7c743825 | 543 | /* Select which of the 2 cases this is. */ |
252b5132 RH |
544 | if (now_seg != data_section) |
545 | { | |
7c743825 KH |
546 | /* New .comm for prev .comm symbol. |
547 | ||
548 | If the new size is larger we just change its | |
549 | value. If the new size is smaller, we ignore | |
550 | this symbol. */ | |
252b5132 RH |
551 | if (S_GET_VALUE (symbolP) |
552 | < ((unsigned) frag_now_fix ())) | |
553 | { | |
554 | S_SET_VALUE (symbolP, (valueT) frag_now_fix ()); | |
555 | } | |
556 | } | |
557 | else | |
558 | { | |
559 | /* It is a .comm/.lcomm being converted to initialized | |
560 | data. */ | |
a3371076 | 561 | define_sym_at_dot (symbolP); |
252b5132 RH |
562 | } |
563 | } | |
564 | else | |
565 | { | |
a8eb42a8 | 566 | #if (!defined (OBJ_AOUT) && !defined (OBJ_MAYBE_AOUT)) |
4c63da97 | 567 | static const char *od_buf = ""; |
252b5132 | 568 | #else |
4c63da97 AM |
569 | char od_buf[100]; |
570 | od_buf[0] = '\0'; | |
4c63da97 | 571 | if (OUTPUT_FLAVOR == bfd_target_aout_flavour) |
d1a6c242 KH |
572 | sprintf (od_buf, "%d.%d.", |
573 | S_GET_OTHER (symbolP), | |
574 | S_GET_DESC (symbolP)); | |
4c63da97 | 575 | #endif |
0e389e77 | 576 | as_bad (_("symbol `%s' is already defined as \"%s\"/%s%ld"), |
252b5132 RH |
577 | sym_name, |
578 | segment_name (S_GET_SEGMENT (symbolP)), | |
4c63da97 | 579 | od_buf, |
252b5132 | 580 | (long) S_GET_VALUE (symbolP)); |
252b5132 | 581 | } |
7c743825 | 582 | } /* if the undefined symbol has no value */ |
252b5132 RH |
583 | } |
584 | else | |
585 | { | |
7c743825 | 586 | /* Don't blow up if the definition is the same. */ |
3c0d9d71 | 587 | if (!(frag_now == symbolP->frag |
252b5132 RH |
588 | && S_GET_VALUE (symbolP) == frag_now_fix () |
589 | && S_GET_SEGMENT (symbolP) == now_seg)) | |
92757bc9 JB |
590 | { |
591 | as_bad (_("symbol `%s' is already defined"), sym_name); | |
592 | symbolP = symbol_clone (symbolP, 0); | |
a3371076 | 593 | define_sym_at_dot (symbolP); |
92757bc9 | 594 | } |
d4887adc | 595 | } |
252b5132 RH |
596 | |
597 | } | |
49309057 ILT |
598 | else if (! flag_keep_locals && bfd_is_local_label_name (stdoutput, sym_name)) |
599 | { | |
e01e1cee AM |
600 | symbolP = (symbolS *) local_symbol_make (sym_name, now_seg, frag_now, |
601 | frag_now_fix ()); | |
49309057 | 602 | } |
252b5132 RH |
603 | else |
604 | { | |
e01e1cee | 605 | symbolP = symbol_new (sym_name, now_seg, frag_now, frag_now_fix ()); |
252b5132 RH |
606 | |
607 | symbol_table_insert (symbolP); | |
d4887adc | 608 | } |
252b5132 RH |
609 | |
610 | if (mri_common_symbol != NULL) | |
611 | { | |
612 | /* This symbol is actually being defined within an MRI common | |
1d3b2b27 | 613 | section. This requires special handling. */ |
5014c2d2 AM |
614 | if (symbolP->flags.local_symbol) |
615 | symbolP = local_symbol_convert (symbolP); | |
616 | symbolP->x->value.X_op = O_symbol; | |
617 | symbolP->x->value.X_add_symbol = mri_common_symbol; | |
618 | symbolP->x->value.X_add_number = S_GET_VALUE (mri_common_symbol); | |
3c0d9d71 | 619 | symbolP->frag = &zero_address_frag; |
252b5132 | 620 | S_SET_SEGMENT (symbolP, expr_section); |
3c0d9d71 | 621 | symbolP->flags.mri_common = 1; |
252b5132 RH |
622 | } |
623 | ||
624 | #ifdef tc_frob_label | |
625 | tc_frob_label (symbolP); | |
626 | #endif | |
627 | #ifdef obj_frob_label | |
628 | obj_frob_label (symbolP); | |
629 | #endif | |
630 | ||
631 | return symbolP; | |
632 | } | |
633 | \f | |
7c743825 | 634 | /* Die if we can't insert the symbol. */ |
252b5132 | 635 | |
7c743825 | 636 | void |
74937d39 | 637 | symbol_table_insert (symbolS *symbolP) |
252b5132 | 638 | { |
252b5132 | 639 | know (symbolP); |
252b5132 | 640 | |
fe0e921f | 641 | htab_insert (sy_hash, symbolP, 1); |
7c743825 | 642 | } |
252b5132 | 643 | \f |
7c743825 KH |
644 | /* If a symbol name does not exist, create it as undefined, and insert |
645 | it into the symbol table. Return a pointer to it. */ | |
646 | ||
252b5132 | 647 | symbolS * |
74937d39 | 648 | symbol_find_or_make (const char *name) |
252b5132 | 649 | { |
ed9e98c2 | 650 | symbolS *symbolP; |
252b5132 RH |
651 | |
652 | symbolP = symbol_find (name); | |
653 | ||
654 | if (symbolP == NULL) | |
655 | { | |
49309057 ILT |
656 | if (! flag_keep_locals && bfd_is_local_label_name (stdoutput, name)) |
657 | { | |
658 | symbolP = md_undefined_symbol ((char *) name); | |
659 | if (symbolP != NULL) | |
660 | return symbolP; | |
661 | ||
662 | symbolP = (symbolS *) local_symbol_make (name, undefined_section, | |
e01e1cee | 663 | &zero_address_frag, 0); |
49309057 ILT |
664 | return symbolP; |
665 | } | |
49309057 | 666 | |
252b5132 RH |
667 | symbolP = symbol_make (name); |
668 | ||
669 | symbol_table_insert (symbolP); | |
670 | } /* if symbol wasn't found */ | |
671 | ||
672 | return (symbolP); | |
7c743825 | 673 | } |
252b5132 RH |
674 | |
675 | symbolS * | |
74937d39 | 676 | symbol_make (const char *name) |
252b5132 RH |
677 | { |
678 | symbolS *symbolP; | |
679 | ||
7c743825 | 680 | /* Let the machine description default it, e.g. for register names. */ |
252b5132 RH |
681 | symbolP = md_undefined_symbol ((char *) name); |
682 | ||
683 | if (!symbolP) | |
e01e1cee | 684 | symbolP = symbol_new (name, undefined_section, &zero_address_frag, 0); |
252b5132 RH |
685 | |
686 | return (symbolP); | |
7c743825 | 687 | } |
252b5132 | 688 | |
9497f5ac NC |
689 | symbolS * |
690 | symbol_clone (symbolS *orgsymP, int replace) | |
691 | { | |
692 | symbolS *newsymP; | |
6a2b6326 | 693 | asymbol *bsymorg, *bsymnew; |
9497f5ac | 694 | |
4a826962 MR |
695 | /* Make sure we never clone the dot special symbol. */ |
696 | gas_assert (orgsymP != &dot_symbol); | |
697 | ||
5014c2d2 AM |
698 | /* When cloning a local symbol it isn't absolutely necessary to |
699 | convert the original, but converting makes the code much | |
700 | simpler to cover this unexpected case. As of 2020-08-21 | |
701 | symbol_clone won't be called on a local symbol. */ | |
702 | if (orgsymP->flags.local_symbol) | |
703 | orgsymP = local_symbol_convert (orgsymP); | |
6a2b6326 | 704 | bsymorg = orgsymP->bsym; |
9497f5ac | 705 | |
5014c2d2 AM |
706 | newsymP = (symbolS *) obstack_alloc (¬es, (sizeof (symbolS) |
707 | + sizeof (struct xsymbol))); | |
9497f5ac | 708 | *newsymP = *orgsymP; |
5014c2d2 AM |
709 | newsymP->x = (struct xsymbol *) (newsymP + 1); |
710 | *newsymP->x = *orgsymP->x; | |
6a2b6326 JB |
711 | bsymnew = bfd_make_empty_symbol (bfd_asymbol_bfd (bsymorg)); |
712 | if (bsymnew == NULL) | |
885afe7b | 713 | as_fatal ("bfd_make_empty_symbol: %s", bfd_errmsg (bfd_get_error ())); |
6a2b6326 JB |
714 | newsymP->bsym = bsymnew; |
715 | bsymnew->name = bsymorg->name; | |
25313d6a | 716 | bsymnew->flags = bsymorg->flags & ~BSF_SECTION_SYM; |
9d75b288 | 717 | bsymnew->section = bsymorg->section; |
6a2b6326 JB |
718 | bfd_copy_private_symbol_data (bfd_asymbol_bfd (bsymorg), bsymorg, |
719 | bfd_asymbol_bfd (bsymnew), bsymnew); | |
720 | ||
721 | #ifdef obj_symbol_clone_hook | |
722 | obj_symbol_clone_hook (newsymP, orgsymP); | |
723 | #endif | |
724 | ||
725 | #ifdef tc_symbol_clone_hook | |
726 | tc_symbol_clone_hook (newsymP, orgsymP); | |
727 | #endif | |
9497f5ac NC |
728 | |
729 | if (replace) | |
730 | { | |
731 | if (symbol_rootP == orgsymP) | |
732 | symbol_rootP = newsymP; | |
5014c2d2 | 733 | else if (orgsymP->x->previous) |
9497f5ac | 734 | { |
5014c2d2 AM |
735 | orgsymP->x->previous->x->next = newsymP; |
736 | orgsymP->x->previous = NULL; | |
9497f5ac NC |
737 | } |
738 | if (symbol_lastP == orgsymP) | |
739 | symbol_lastP = newsymP; | |
5014c2d2 AM |
740 | else if (orgsymP->x->next) |
741 | orgsymP->x->next->x->previous = newsymP; | |
73e24c68 AM |
742 | |
743 | /* Symbols that won't be output can't be external. */ | |
744 | S_CLEAR_EXTERNAL (orgsymP); | |
5014c2d2 | 745 | orgsymP->x->previous = orgsymP->x->next = orgsymP; |
9497f5ac NC |
746 | debug_verify_symchain (symbol_rootP, symbol_lastP); |
747 | ||
748 | symbol_table_insert (newsymP); | |
749 | } | |
bdf128d6 | 750 | else |
73e24c68 AM |
751 | { |
752 | /* Symbols that won't be output can't be external. */ | |
753 | S_CLEAR_EXTERNAL (newsymP); | |
5014c2d2 | 754 | newsymP->x->previous = newsymP->x->next = newsymP; |
73e24c68 | 755 | } |
9497f5ac NC |
756 | |
757 | return newsymP; | |
758 | } | |
759 | ||
760 | /* Referenced symbols, if they are forward references, need to be cloned | |
761 | (without replacing the original) so that the value of the referenced | |
38cf168b | 762 | symbols at the point of use is saved by the clone. */ |
9497f5ac NC |
763 | |
764 | #undef symbol_clone_if_forward_ref | |
765 | symbolS * | |
766 | symbol_clone_if_forward_ref (symbolS *symbolP, int is_forward) | |
767 | { | |
5014c2d2 | 768 | if (symbolP && !symbolP->flags.local_symbol) |
9497f5ac | 769 | { |
5014c2d2 AM |
770 | symbolS *orig_add_symbol = symbolP->x->value.X_add_symbol; |
771 | symbolS *orig_op_symbol = symbolP->x->value.X_op_symbol; | |
38cf168b AM |
772 | symbolS *add_symbol = orig_add_symbol; |
773 | symbolS *op_symbol = orig_op_symbol; | |
9497f5ac | 774 | |
3c0d9d71 | 775 | if (symbolP->flags.forward_ref) |
9497f5ac NC |
776 | is_forward = 1; |
777 | ||
778 | if (is_forward) | |
779 | { | |
780 | /* assign_symbol() clones volatile symbols; pre-existing expressions | |
781 | hold references to the original instance, but want the current | |
782 | value. Just repeat the lookup. */ | |
783 | if (add_symbol && S_IS_VOLATILE (add_symbol)) | |
784 | add_symbol = symbol_find_exact (S_GET_NAME (add_symbol)); | |
785 | if (op_symbol && S_IS_VOLATILE (op_symbol)) | |
786 | op_symbol = symbol_find_exact (S_GET_NAME (op_symbol)); | |
787 | } | |
788 | ||
3c0d9d71 | 789 | /* Re-using resolving here, as this routine cannot get called from |
9497f5ac | 790 | symbol resolution code. */ |
158184ac | 791 | if ((symbolP->bsym->section == expr_section |
3c0d9d71 AM |
792 | || symbolP->flags.forward_ref) |
793 | && !symbolP->flags.resolving) | |
9497f5ac | 794 | { |
3c0d9d71 | 795 | symbolP->flags.resolving = 1; |
9497f5ac NC |
796 | add_symbol = symbol_clone_if_forward_ref (add_symbol, is_forward); |
797 | op_symbol = symbol_clone_if_forward_ref (op_symbol, is_forward); | |
3c0d9d71 | 798 | symbolP->flags.resolving = 0; |
9497f5ac NC |
799 | } |
800 | ||
3c0d9d71 | 801 | if (symbolP->flags.forward_ref |
38cf168b AM |
802 | || add_symbol != orig_add_symbol |
803 | || op_symbol != orig_op_symbol) | |
3df4e177 | 804 | { |
4a826962 MR |
805 | if (symbolP != &dot_symbol) |
806 | { | |
807 | symbolP = symbol_clone (symbolP, 0); | |
3c0d9d71 | 808 | symbolP->flags.resolving = 0; |
4a826962 MR |
809 | } |
810 | else | |
a1facbec MR |
811 | { |
812 | symbolP = symbol_temp_new_now (); | |
813 | #ifdef tc_new_dot_label | |
814 | tc_new_dot_label (symbolP); | |
815 | #endif | |
816 | } | |
3df4e177 | 817 | } |
9497f5ac | 818 | |
5014c2d2 AM |
819 | symbolP->x->value.X_add_symbol = add_symbol; |
820 | symbolP->x->value.X_op_symbol = op_symbol; | |
9497f5ac NC |
821 | } |
822 | ||
823 | return symbolP; | |
824 | } | |
825 | ||
b7d6ed97 | 826 | symbolS * |
e01e1cee | 827 | symbol_temp_new (segT seg, fragS *frag, valueT ofs) |
b7d6ed97 | 828 | { |
e01e1cee | 829 | return symbol_new (FAKE_LABEL_NAME, seg, frag, ofs); |
b7d6ed97 RH |
830 | } |
831 | ||
832 | symbolS * | |
74937d39 | 833 | symbol_temp_new_now (void) |
b7d6ed97 | 834 | { |
e01e1cee | 835 | return symbol_temp_new (now_seg, frag_now, frag_now_fix ()); |
b7d6ed97 RH |
836 | } |
837 | ||
d18d1999 CE |
838 | symbolS * |
839 | symbol_temp_new_now_octets (void) | |
840 | { | |
e01e1cee | 841 | return symbol_temp_new (now_seg, frag_now, frag_now_fix_octets ()); |
d18d1999 CE |
842 | } |
843 | ||
b7d6ed97 | 844 | symbolS * |
74937d39 | 845 | symbol_temp_make (void) |
b7d6ed97 | 846 | { |
756d1d01 | 847 | return symbol_make (FAKE_LABEL_NAME); |
b7d6ed97 RH |
848 | } |
849 | ||
7c743825 KH |
850 | /* Implement symbol table lookup. |
851 | In: A symbol's name as a string: '\0' can't be part of a symbol name. | |
852 | Out: NULL if the name was not in the symbol table, else the address | |
853 | of a struct symbol associated with that name. */ | |
252b5132 | 854 | |
9758f3fc | 855 | symbolS * |
74937d39 | 856 | symbol_find_exact (const char *name) |
06e77878 AO |
857 | { |
858 | return symbol_find_exact_noref (name, 0); | |
859 | } | |
860 | ||
861 | symbolS * | |
862 | symbol_find_exact_noref (const char *name, int noref) | |
9758f3fc | 863 | { |
5014c2d2 | 864 | symbolS *sym = symbol_entry_find (sy_hash, name); |
06e77878 AO |
865 | |
866 | /* Any references to the symbol, except for the reference in | |
867 | .weakref, must clear this flag, such that the symbol does not | |
868 | turn into a weak symbol. Note that we don't have to handle the | |
869 | local_symbol case, since a weakrefd is always promoted out of the | |
870 | local_symbol table when it is turned into a weak symbol. */ | |
871 | if (sym && ! noref) | |
872 | S_CLEAR_WEAKREFD (sym); | |
873 | ||
874 | return sym; | |
9758f3fc AM |
875 | } |
876 | ||
252b5132 | 877 | symbolS * |
91c4c449 | 878 | symbol_find (const char *name) |
06e77878 AO |
879 | { |
880 | return symbol_find_noref (name, 0); | |
881 | } | |
882 | ||
883 | symbolS * | |
884 | symbol_find_noref (const char *name, int noref) | |
252b5132 | 885 | { |
e1fa0163 NC |
886 | symbolS * result; |
887 | char * copy = NULL; | |
888 | ||
252b5132 RH |
889 | #ifdef tc_canonicalize_symbol_name |
890 | { | |
e1fa0163 | 891 | copy = xstrdup (name); |
252b5132 RH |
892 | name = tc_canonicalize_symbol_name (copy); |
893 | } | |
894 | #endif | |
895 | ||
896 | if (! symbols_case_sensitive) | |
897 | { | |
03987ced | 898 | const char *orig; |
e1fa0163 | 899 | char *copy2 = NULL; |
03987ced RH |
900 | unsigned char c; |
901 | ||
902 | orig = name; | |
e1fa0163 NC |
903 | if (copy != NULL) |
904 | copy2 = copy; | |
325801bd | 905 | name = copy = XNEWVEC (char, strlen (name) + 1); |
03987ced RH |
906 | |
907 | while ((c = *orig++) != '\0') | |
e1fa0163 | 908 | *copy++ = TOUPPER (c); |
03987ced | 909 | *copy = '\0'; |
e1fa0163 | 910 | |
9fbb53c7 | 911 | free (copy2); |
e1fa0163 | 912 | copy = (char *) name; |
252b5132 RH |
913 | } |
914 | ||
e1fa0163 | 915 | result = symbol_find_exact_noref (name, noref); |
9fbb53c7 | 916 | free (copy); |
e1fa0163 | 917 | return result; |
252b5132 RH |
918 | } |
919 | ||
7c743825 KH |
920 | /* Once upon a time, symbols were kept in a singly linked list. At |
921 | least coff needs to be able to rearrange them from time to time, for | |
922 | which a doubly linked list is much more convenient. Loic did these | |
923 | as macros which seemed dangerous to me so they're now functions. | |
924 | xoxorich. */ | |
925 | ||
926 | /* Link symbol ADDME after symbol TARGET in the chain. */ | |
252b5132 | 927 | |
7c743825 | 928 | void |
74937d39 KH |
929 | symbol_append (symbolS *addme, symbolS *target, |
930 | symbolS **rootPP, symbolS **lastPP) | |
252b5132 | 931 | { |
3c0d9d71 AM |
932 | extern int symbol_table_frozen; |
933 | if (symbol_table_frozen) | |
934 | abort (); | |
5014c2d2 | 935 | if (addme->flags.local_symbol) |
49309057 | 936 | abort (); |
5014c2d2 | 937 | if (target != NULL && target->flags.local_symbol) |
49309057 ILT |
938 | abort (); |
939 | ||
252b5132 RH |
940 | if (target == NULL) |
941 | { | |
942 | know (*rootPP == NULL); | |
943 | know (*lastPP == NULL); | |
5014c2d2 AM |
944 | addme->x->next = NULL; |
945 | addme->x->previous = NULL; | |
252b5132 RH |
946 | *rootPP = addme; |
947 | *lastPP = addme; | |
948 | return; | |
7c743825 | 949 | } /* if the list is empty */ |
252b5132 | 950 | |
5014c2d2 | 951 | if (target->x->next != NULL) |
252b5132 | 952 | { |
5014c2d2 | 953 | target->x->next->x->previous = addme; |
252b5132 RH |
954 | } |
955 | else | |
956 | { | |
957 | know (*lastPP == target); | |
958 | *lastPP = addme; | |
7c743825 | 959 | } /* if we have a next */ |
252b5132 | 960 | |
5014c2d2 AM |
961 | addme->x->next = target->x->next; |
962 | target->x->next = addme; | |
963 | addme->x->previous = target; | |
252b5132 RH |
964 | |
965 | debug_verify_symchain (symbol_rootP, symbol_lastP); | |
966 | } | |
967 | ||
7c743825 KH |
968 | /* Set the chain pointers of SYMBOL to null. */ |
969 | ||
970 | void | |
74937d39 | 971 | symbol_clear_list_pointers (symbolS *symbolP) |
252b5132 | 972 | { |
5014c2d2 | 973 | if (symbolP->flags.local_symbol) |
49309057 | 974 | abort (); |
5014c2d2 AM |
975 | symbolP->x->next = NULL; |
976 | symbolP->x->previous = NULL; | |
252b5132 RH |
977 | } |
978 | ||
7c743825 KH |
979 | /* Remove SYMBOLP from the list. */ |
980 | ||
981 | void | |
74937d39 | 982 | symbol_remove (symbolS *symbolP, symbolS **rootPP, symbolS **lastPP) |
252b5132 | 983 | { |
5014c2d2 | 984 | if (symbolP->flags.local_symbol) |
49309057 ILT |
985 | abort (); |
986 | ||
252b5132 RH |
987 | if (symbolP == *rootPP) |
988 | { | |
5014c2d2 | 989 | *rootPP = symbolP->x->next; |
7c743825 | 990 | } /* if it was the root */ |
252b5132 RH |
991 | |
992 | if (symbolP == *lastPP) | |
993 | { | |
5014c2d2 | 994 | *lastPP = symbolP->x->previous; |
7c743825 | 995 | } /* if it was the tail */ |
252b5132 | 996 | |
5014c2d2 | 997 | if (symbolP->x->next != NULL) |
252b5132 | 998 | { |
5014c2d2 | 999 | symbolP->x->next->x->previous = symbolP->x->previous; |
7c743825 | 1000 | } /* if not last */ |
252b5132 | 1001 | |
5014c2d2 | 1002 | if (symbolP->x->previous != NULL) |
252b5132 | 1003 | { |
5014c2d2 | 1004 | symbolP->x->previous->x->next = symbolP->x->next; |
7c743825 | 1005 | } /* if not first */ |
252b5132 RH |
1006 | |
1007 | debug_verify_symchain (*rootPP, *lastPP); | |
1008 | } | |
1009 | ||
7c743825 KH |
1010 | /* Link symbol ADDME before symbol TARGET in the chain. */ |
1011 | ||
1012 | void | |
74937d39 KH |
1013 | symbol_insert (symbolS *addme, symbolS *target, |
1014 | symbolS **rootPP, symbolS **lastPP ATTRIBUTE_UNUSED) | |
252b5132 | 1015 | { |
3c0d9d71 AM |
1016 | extern int symbol_table_frozen; |
1017 | if (symbol_table_frozen) | |
1018 | abort (); | |
5014c2d2 | 1019 | if (addme->flags.local_symbol) |
49309057 | 1020 | abort (); |
5014c2d2 | 1021 | if (target->flags.local_symbol) |
49309057 ILT |
1022 | abort (); |
1023 | ||
5014c2d2 | 1024 | if (target->x->previous != NULL) |
252b5132 | 1025 | { |
5014c2d2 | 1026 | target->x->previous->x->next = addme; |
252b5132 RH |
1027 | } |
1028 | else | |
1029 | { | |
1030 | know (*rootPP == target); | |
1031 | *rootPP = addme; | |
7c743825 | 1032 | } /* if not first */ |
252b5132 | 1033 | |
5014c2d2 AM |
1034 | addme->x->previous = target->x->previous; |
1035 | target->x->previous = addme; | |
1036 | addme->x->next = target; | |
252b5132 RH |
1037 | |
1038 | debug_verify_symchain (*rootPP, *lastPP); | |
1039 | } | |
1040 | ||
7c743825 | 1041 | void |
74937d39 | 1042 | verify_symbol_chain (symbolS *rootP, symbolS *lastP) |
252b5132 RH |
1043 | { |
1044 | symbolS *symbolP = rootP; | |
1045 | ||
1046 | if (symbolP == NULL) | |
1047 | return; | |
1048 | ||
1049 | for (; symbol_next (symbolP) != NULL; symbolP = symbol_next (symbolP)) | |
1050 | { | |
9c2799c2 | 1051 | gas_assert (symbolP->bsym != NULL); |
3c0d9d71 | 1052 | gas_assert (symbolP->flags.local_symbol == 0); |
5014c2d2 | 1053 | gas_assert (symbolP->x->next->x->previous == symbolP); |
252b5132 RH |
1054 | } |
1055 | ||
9c2799c2 | 1056 | gas_assert (lastP == symbolP); |
252b5132 RH |
1057 | } |
1058 | ||
8d1015a8 AM |
1059 | int |
1060 | symbol_on_chain (symbolS *s, symbolS *rootPP, symbolS *lastPP) | |
1061 | { | |
5014c2d2 AM |
1062 | return (!s->flags.local_symbol |
1063 | && ((s->x->next != s | |
1064 | && s->x->next != NULL | |
1065 | && s->x->next->x->previous == s) | |
8d1015a8 | 1066 | || s == lastPP) |
5014c2d2 AM |
1067 | && ((s->x->previous != s |
1068 | && s->x->previous != NULL | |
1069 | && s->x->previous->x->next == s) | |
8d1015a8 AM |
1070 | || s == rootPP)); |
1071 | } | |
1072 | ||
280d71bf DB |
1073 | #ifdef OBJ_COMPLEX_RELC |
1074 | ||
1075 | static int | |
1076 | use_complex_relocs_for (symbolS * symp) | |
1077 | { | |
5014c2d2 | 1078 | switch (symp->x->value.X_op) |
280d71bf DB |
1079 | { |
1080 | case O_constant: | |
1081 | return 0; | |
1082 | ||
280d71bf DB |
1083 | case O_multiply: |
1084 | case O_divide: | |
1085 | case O_modulus: | |
1086 | case O_left_shift: | |
1087 | case O_right_shift: | |
1088 | case O_bit_inclusive_or: | |
1089 | case O_bit_or_not: | |
1090 | case O_bit_exclusive_or: | |
1091 | case O_bit_and: | |
1092 | case O_add: | |
1093 | case O_subtract: | |
1094 | case O_eq: | |
1095 | case O_ne: | |
1096 | case O_lt: | |
1097 | case O_le: | |
1098 | case O_ge: | |
1099 | case O_gt: | |
1100 | case O_logical_and: | |
1101 | case O_logical_or: | |
5014c2d2 AM |
1102 | if ((S_IS_COMMON (symp->x->value.X_op_symbol) |
1103 | || S_IS_LOCAL (symp->x->value.X_op_symbol)) | |
1104 | && S_IS_DEFINED (symp->x->value.X_op_symbol) | |
1105 | && S_GET_SEGMENT (symp->x->value.X_op_symbol) != expr_section) | |
0f1309c8 AM |
1106 | { |
1107 | case O_symbol: | |
1108 | case O_symbol_rva: | |
1109 | case O_uminus: | |
1110 | case O_bit_not: | |
1111 | case O_logical_not: | |
5014c2d2 AM |
1112 | if ((S_IS_COMMON (symp->x->value.X_add_symbol) |
1113 | || S_IS_LOCAL (symp->x->value.X_add_symbol)) | |
1114 | && S_IS_DEFINED (symp->x->value.X_add_symbol) | |
1115 | && S_GET_SEGMENT (symp->x->value.X_add_symbol) != expr_section) | |
0f1309c8 AM |
1116 | return 0; |
1117 | } | |
280d71bf | 1118 | break; |
34bca508 | 1119 | |
280d71bf DB |
1120 | default: |
1121 | break; | |
1122 | } | |
1123 | return 1; | |
1124 | } | |
1125 | #endif | |
1126 | ||
0909233e | 1127 | static void |
5a0ade8b | 1128 | report_op_error (symbolS *symp, symbolS *left, operatorT op, symbolS *right) |
0909233e | 1129 | { |
3b4dbbbf | 1130 | const char *file; |
0909233e | 1131 | unsigned int line; |
5a0ade8b AM |
1132 | segT seg_left = left ? S_GET_SEGMENT (left) : 0; |
1133 | segT seg_right = S_GET_SEGMENT (right); | |
1134 | const char *opname; | |
1135 | ||
1136 | switch (op) | |
1137 | { | |
1138 | default: | |
1139 | abort (); | |
1140 | return; | |
1141 | ||
1142 | case O_uminus: opname = "-"; break; | |
1143 | case O_bit_not: opname = "~"; break; | |
1144 | case O_logical_not: opname = "!"; break; | |
1145 | case O_multiply: opname = "*"; break; | |
1146 | case O_divide: opname = "/"; break; | |
1147 | case O_modulus: opname = "%"; break; | |
1148 | case O_left_shift: opname = "<<"; break; | |
1149 | case O_right_shift: opname = ">>"; break; | |
1150 | case O_bit_inclusive_or: opname = "|"; break; | |
1151 | case O_bit_or_not: opname = "|~"; break; | |
1152 | case O_bit_exclusive_or: opname = "^"; break; | |
1153 | case O_bit_and: opname = "&"; break; | |
1154 | case O_add: opname = "+"; break; | |
1155 | case O_subtract: opname = "-"; break; | |
1156 | case O_eq: opname = "=="; break; | |
1157 | case O_ne: opname = "!="; break; | |
1158 | case O_lt: opname = "<"; break; | |
1159 | case O_le: opname = "<="; break; | |
1160 | case O_ge: opname = ">="; break; | |
1161 | case O_gt: opname = ">"; break; | |
1162 | case O_logical_and: opname = "&&"; break; | |
1163 | case O_logical_or: opname = "||"; break; | |
1164 | } | |
1d3b2b27 | 1165 | |
0909233e AM |
1166 | if (expr_symbol_where (symp, &file, &line)) |
1167 | { | |
5a0ade8b | 1168 | if (left) |
0909233e | 1169 | as_bad_where (file, line, |
5a0ade8b AM |
1170 | _("invalid operands (%s and %s sections) for `%s'"), |
1171 | seg_left->name, seg_right->name, opname); | |
1172 | else | |
0909233e | 1173 | as_bad_where (file, line, |
5a0ade8b AM |
1174 | _("invalid operand (%s section) for `%s'"), |
1175 | seg_right->name, opname); | |
0909233e AM |
1176 | } |
1177 | else | |
1178 | { | |
5a0ade8b AM |
1179 | const char *sname = S_GET_NAME (symp); |
1180 | ||
1181 | if (left) | |
1182 | as_bad (_("invalid operands (%s and %s sections) for `%s' when setting `%s'"), | |
1183 | seg_left->name, seg_right->name, opname, sname); | |
1184 | else | |
1185 | as_bad (_("invalid operand (%s section) for `%s' when setting `%s'"), | |
1186 | seg_right->name, opname, sname); | |
0909233e AM |
1187 | } |
1188 | } | |
1189 | ||
252b5132 RH |
1190 | /* Resolve the value of a symbol. This is called during the final |
1191 | pass over the symbol table to resolve any symbols with complex | |
1192 | values. */ | |
1193 | ||
1194 | valueT | |
74937d39 | 1195 | resolve_symbol_value (symbolS *symp) |
252b5132 RH |
1196 | { |
1197 | int resolved; | |
1903f138 | 1198 | valueT final_val; |
252b5132 RH |
1199 | segT final_seg; |
1200 | ||
5014c2d2 | 1201 | if (symp->flags.local_symbol) |
49309057 ILT |
1202 | { |
1203 | struct local_symbol *locsym = (struct local_symbol *) symp; | |
1204 | ||
3c0d9d71 AM |
1205 | final_val = locsym->value; |
1206 | if (locsym->flags.resolved) | |
bd780143 | 1207 | return final_val; |
49309057 | 1208 | |
61826503 CE |
1209 | /* Symbols whose section has SEC_ELF_OCTETS set, |
1210 | resolve to octets instead of target bytes. */ | |
3c0d9d71 | 1211 | if (locsym->section->flags & SEC_OCTETS) |
5014c2d2 | 1212 | final_val += locsym->frag->fr_address; |
61826503 | 1213 | else |
5014c2d2 | 1214 | final_val += locsym->frag->fr_address / OCTETS_PER_BYTE; |
49309057 | 1215 | |
6386f3a7 | 1216 | if (finalize_syms) |
49309057 | 1217 | { |
3c0d9d71 AM |
1218 | locsym->value = final_val; |
1219 | locsym->flags.resolved = 1; | |
49309057 ILT |
1220 | } |
1221 | ||
1222 | return final_val; | |
1223 | } | |
1224 | ||
3c0d9d71 | 1225 | if (symp->flags.resolved) |
252b5132 | 1226 | { |
1903f138 | 1227 | final_val = 0; |
5014c2d2 | 1228 | while (symp->x->value.X_op == O_symbol) |
1903f138 | 1229 | { |
5014c2d2 AM |
1230 | final_val += symp->x->value.X_add_number; |
1231 | symp = symp->x->value.X_add_symbol; | |
1232 | if (symp->flags.local_symbol) | |
2a50b401 AM |
1233 | { |
1234 | struct local_symbol *locsym = (struct local_symbol *) symp; | |
3c0d9d71 | 1235 | final_val += locsym->value; |
2a50b401 AM |
1236 | return final_val; |
1237 | } | |
3c0d9d71 | 1238 | if (!symp->flags.resolved) |
2a50b401 | 1239 | return 0; |
1903f138 | 1240 | } |
5014c2d2 AM |
1241 | if (symp->x->value.X_op == O_constant) |
1242 | final_val += symp->x->value.X_add_number; | |
252b5132 | 1243 | else |
1903f138 AM |
1244 | final_val = 0; |
1245 | return final_val; | |
252b5132 RH |
1246 | } |
1247 | ||
1248 | resolved = 0; | |
1249 | final_seg = S_GET_SEGMENT (symp); | |
1250 | ||
3c0d9d71 | 1251 | if (symp->flags.resolving) |
252b5132 | 1252 | { |
6386f3a7 | 1253 | if (finalize_syms) |
0e389e77 | 1254 | as_bad (_("symbol definition loop encountered at `%s'"), |
7c743825 | 1255 | S_GET_NAME (symp)); |
252b5132 RH |
1256 | final_val = 0; |
1257 | resolved = 1; | |
1258 | } | |
280d71bf DB |
1259 | #ifdef OBJ_COMPLEX_RELC |
1260 | else if (final_seg == expr_section | |
1261 | && use_complex_relocs_for (symp)) | |
1262 | { | |
1263 | symbolS * relc_symbol = NULL; | |
1264 | char * relc_symbol_name = NULL; | |
1265 | ||
5014c2d2 | 1266 | relc_symbol_name = symbol_relc_make_expr (& symp->x->value); |
280d71bf DB |
1267 | |
1268 | /* For debugging, print out conversion input & output. */ | |
1269 | #ifdef DEBUG_SYMS | |
5014c2d2 | 1270 | print_expr (& symp->x->value); |
280d71bf DB |
1271 | if (relc_symbol_name) |
1272 | fprintf (stderr, "-> relc symbol: %s\n", relc_symbol_name); | |
1273 | #endif | |
1274 | ||
1275 | if (relc_symbol_name != NULL) | |
1276 | relc_symbol = symbol_new (relc_symbol_name, undefined_section, | |
e01e1cee | 1277 | &zero_address_frag, 0); |
280d71bf DB |
1278 | |
1279 | if (relc_symbol == NULL) | |
1280 | { | |
1281 | as_bad (_("cannot convert expression symbol %s to complex relocation"), | |
1282 | S_GET_NAME (symp)); | |
1283 | resolved = 0; | |
1284 | } | |
1285 | else | |
1286 | { | |
1287 | symbol_table_insert (relc_symbol); | |
1288 | ||
3c0d9d71 | 1289 | /* S_CLEAR_EXTERNAL (relc_symbol); */ |
280d71bf DB |
1290 | if (symp->bsym->flags & BSF_SRELC) |
1291 | relc_symbol->bsym->flags |= BSF_SRELC; | |
1292 | else | |
34bca508 | 1293 | relc_symbol->bsym->flags |= BSF_RELC; |
280d71bf DB |
1294 | /* symp->bsym->flags |= BSF_RELC; */ |
1295 | copy_symbol_attributes (symp, relc_symbol); | |
5014c2d2 AM |
1296 | symp->x->value.X_op = O_symbol; |
1297 | symp->x->value.X_add_symbol = relc_symbol; | |
1298 | symp->x->value.X_add_number = 0; | |
280d71bf DB |
1299 | resolved = 1; |
1300 | } | |
1301 | ||
1903f138 | 1302 | final_val = 0; |
280d71bf DB |
1303 | final_seg = undefined_section; |
1304 | goto exit_dont_set_value; | |
1305 | } | |
1306 | #endif | |
252b5132 RH |
1307 | else |
1308 | { | |
1309 | symbolS *add_symbol, *op_symbol; | |
1310 | offsetT left, right; | |
1311 | segT seg_left, seg_right; | |
1312 | operatorT op; | |
2d034539 | 1313 | int move_seg_ok; |
252b5132 | 1314 | |
3c0d9d71 | 1315 | symp->flags.resolving = 1; |
252b5132 RH |
1316 | |
1317 | /* Help out with CSE. */ | |
5014c2d2 AM |
1318 | add_symbol = symp->x->value.X_add_symbol; |
1319 | op_symbol = symp->x->value.X_op_symbol; | |
1320 | final_val = symp->x->value.X_add_number; | |
1321 | op = symp->x->value.X_op; | |
252b5132 RH |
1322 | |
1323 | switch (op) | |
1324 | { | |
1325 | default: | |
1326 | BAD_CASE (op); | |
1327 | break; | |
1328 | ||
1329 | case O_absent: | |
1330 | final_val = 0; | |
1331 | /* Fall through. */ | |
1332 | ||
1333 | case O_constant: | |
61826503 CE |
1334 | /* Symbols whose section has SEC_ELF_OCTETS set, |
1335 | resolve to octets instead of target bytes. */ | |
1336 | if (symp->bsym->section->flags & SEC_OCTETS) | |
3c0d9d71 | 1337 | final_val += symp->frag->fr_address; |
61826503 | 1338 | else |
3c0d9d71 | 1339 | final_val += symp->frag->fr_address / OCTETS_PER_BYTE; |
252b5132 RH |
1340 | if (final_seg == expr_section) |
1341 | final_seg = absolute_section; | |
db557034 AM |
1342 | /* Fall through. */ |
1343 | ||
1344 | case O_register: | |
252b5132 RH |
1345 | resolved = 1; |
1346 | break; | |
1347 | ||
1348 | case O_symbol: | |
1349 | case O_symbol_rva: | |
6386f3a7 | 1350 | left = resolve_symbol_value (add_symbol); |
e0890092 AM |
1351 | seg_left = S_GET_SEGMENT (add_symbol); |
1352 | if (finalize_syms) | |
5014c2d2 | 1353 | symp->x->value.X_op_symbol = NULL; |
252b5132 | 1354 | |
e0890092 | 1355 | do_symbol: |
06e77878 AO |
1356 | if (S_IS_WEAKREFR (symp)) |
1357 | { | |
9c2799c2 | 1358 | gas_assert (final_val == 0); |
06e77878 AO |
1359 | if (S_IS_WEAKREFR (add_symbol)) |
1360 | { | |
5014c2d2 AM |
1361 | gas_assert (add_symbol->x->value.X_op == O_symbol |
1362 | && add_symbol->x->value.X_add_number == 0); | |
1363 | add_symbol = add_symbol->x->value.X_add_symbol; | |
9c2799c2 | 1364 | gas_assert (! S_IS_WEAKREFR (add_symbol)); |
5014c2d2 | 1365 | symp->x->value.X_add_symbol = add_symbol; |
06e77878 AO |
1366 | } |
1367 | } | |
1368 | ||
3c0d9d71 | 1369 | if (symp->flags.mri_common) |
252b5132 RH |
1370 | { |
1371 | /* This is a symbol inside an MRI common section. The | |
e0890092 AM |
1372 | relocation routines are going to handle it specially. |
1373 | Don't change the value. */ | |
49309057 | 1374 | resolved = symbol_resolved_p (add_symbol); |
252b5132 RH |
1375 | break; |
1376 | } | |
1377 | ||
2a50b401 AM |
1378 | /* Don't leave symbol loops. */ |
1379 | if (finalize_syms | |
5014c2d2 | 1380 | && !add_symbol->flags.local_symbol |
3c0d9d71 | 1381 | && add_symbol->flags.resolving) |
2a50b401 AM |
1382 | break; |
1383 | ||
6386f3a7 | 1384 | if (finalize_syms && final_val == 0) |
49309057 | 1385 | { |
5014c2d2 AM |
1386 | if (add_symbol->flags.local_symbol) |
1387 | add_symbol = local_symbol_convert (add_symbol); | |
49309057 ILT |
1388 | copy_symbol_attributes (symp, add_symbol); |
1389 | } | |
252b5132 | 1390 | |
e0890092 AM |
1391 | /* If we have equated this symbol to an undefined or common |
1392 | symbol, keep X_op set to O_symbol, and don't change | |
1393 | X_add_number. This permits the routine which writes out | |
1394 | relocation to detect this case, and convert the | |
1395 | relocation to be against the symbol to which this symbol | |
1396 | is equated. */ | |
1903f138 AM |
1397 | if (seg_left == undefined_section |
1398 | || bfd_is_com_section (seg_left) | |
7be1c489 | 1399 | #if defined (OBJ_COFF) && defined (TE_PE) |
977cdf5a NC |
1400 | || S_IS_WEAK (add_symbol) |
1401 | #endif | |
1903f138 AM |
1402 | || (finalize_syms |
1403 | && ((final_seg == expr_section | |
1404 | && seg_left != expr_section | |
1405 | && seg_left != absolute_section) | |
1406 | || symbol_shadow_p (symp)))) | |
252b5132 | 1407 | { |
6386f3a7 | 1408 | if (finalize_syms) |
252b5132 | 1409 | { |
5014c2d2 AM |
1410 | symp->x->value.X_op = O_symbol; |
1411 | symp->x->value.X_add_symbol = add_symbol; | |
1412 | symp->x->value.X_add_number = final_val; | |
e0890092 | 1413 | /* Use X_op_symbol as a flag. */ |
5014c2d2 | 1414 | symp->x->value.X_op_symbol = add_symbol; |
252b5132 | 1415 | } |
5a0ade8b | 1416 | final_seg = seg_left; |
3c0d9d71 | 1417 | final_val += symp->frag->fr_address + left; |
e0890092 | 1418 | resolved = symbol_resolved_p (add_symbol); |
3c0d9d71 | 1419 | symp->flags.resolving = 0; |
e0890092 AM |
1420 | goto exit_dont_set_value; |
1421 | } | |
252b5132 RH |
1422 | else |
1423 | { | |
3c0d9d71 | 1424 | final_val += symp->frag->fr_address + left; |
252b5132 | 1425 | if (final_seg == expr_section || final_seg == undefined_section) |
e0890092 | 1426 | final_seg = seg_left; |
252b5132 RH |
1427 | } |
1428 | ||
49309057 | 1429 | resolved = symbol_resolved_p (add_symbol); |
06e77878 | 1430 | if (S_IS_WEAKREFR (symp)) |
22987cec | 1431 | { |
3c0d9d71 | 1432 | symp->flags.resolving = 0; |
22987cec AM |
1433 | goto exit_dont_set_value; |
1434 | } | |
252b5132 RH |
1435 | break; |
1436 | ||
1437 | case O_uminus: | |
1438 | case O_bit_not: | |
1439 | case O_logical_not: | |
6386f3a7 | 1440 | left = resolve_symbol_value (add_symbol); |
784b640d | 1441 | seg_left = S_GET_SEGMENT (add_symbol); |
252b5132 | 1442 | |
0909233e | 1443 | /* By reducing these to the relevant dyadic operator, we get |
3c0d9d71 AM |
1444 | !S -> S == 0 permitted on anything, |
1445 | -S -> 0 - S only permitted on absolute | |
1446 | ~S -> S ^ ~0 only permitted on absolute */ | |
0909233e AM |
1447 | if (op != O_logical_not && seg_left != absolute_section |
1448 | && finalize_syms) | |
5a0ade8b | 1449 | report_op_error (symp, NULL, op, add_symbol); |
1d3b2b27 | 1450 | |
0909233e AM |
1451 | if (final_seg == expr_section || final_seg == undefined_section) |
1452 | final_seg = absolute_section; | |
1d3b2b27 | 1453 | |
252b5132 RH |
1454 | if (op == O_uminus) |
1455 | left = -left; | |
1456 | else if (op == O_logical_not) | |
1457 | left = !left; | |
1458 | else | |
1459 | left = ~left; | |
1460 | ||
3c0d9d71 | 1461 | final_val += left + symp->frag->fr_address; |
252b5132 | 1462 | |
49309057 | 1463 | resolved = symbol_resolved_p (add_symbol); |
252b5132 RH |
1464 | break; |
1465 | ||
1466 | case O_multiply: | |
1467 | case O_divide: | |
1468 | case O_modulus: | |
1469 | case O_left_shift: | |
1470 | case O_right_shift: | |
1471 | case O_bit_inclusive_or: | |
1472 | case O_bit_or_not: | |
1473 | case O_bit_exclusive_or: | |
1474 | case O_bit_and: | |
1475 | case O_add: | |
1476 | case O_subtract: | |
1477 | case O_eq: | |
1478 | case O_ne: | |
1479 | case O_lt: | |
1480 | case O_le: | |
1481 | case O_ge: | |
1482 | case O_gt: | |
1483 | case O_logical_and: | |
1484 | case O_logical_or: | |
6386f3a7 AM |
1485 | left = resolve_symbol_value (add_symbol); |
1486 | right = resolve_symbol_value (op_symbol); | |
252b5132 RH |
1487 | seg_left = S_GET_SEGMENT (add_symbol); |
1488 | seg_right = S_GET_SEGMENT (op_symbol); | |
1489 | ||
1490 | /* Simplify addition or subtraction of a constant by folding the | |
1491 | constant into X_add_number. */ | |
e0890092 | 1492 | if (op == O_add) |
252b5132 RH |
1493 | { |
1494 | if (seg_right == absolute_section) | |
1495 | { | |
e0890092 | 1496 | final_val += right; |
252b5132 RH |
1497 | goto do_symbol; |
1498 | } | |
e0890092 | 1499 | else if (seg_left == absolute_section) |
252b5132 | 1500 | { |
252b5132 RH |
1501 | final_val += left; |
1502 | add_symbol = op_symbol; | |
1503 | left = right; | |
e0890092 AM |
1504 | seg_left = seg_right; |
1505 | goto do_symbol; | |
1506 | } | |
1507 | } | |
1508 | else if (op == O_subtract) | |
1509 | { | |
1510 | if (seg_right == absolute_section) | |
1511 | { | |
1512 | final_val -= right; | |
252b5132 RH |
1513 | goto do_symbol; |
1514 | } | |
1515 | } | |
1516 | ||
2d034539 | 1517 | move_seg_ok = 1; |
e0890092 AM |
1518 | /* Equality and non-equality tests are permitted on anything. |
1519 | Subtraction, and other comparison operators are permitted if | |
1520 | both operands are in the same section. Otherwise, both | |
1521 | operands must be absolute. We already handled the case of | |
1522 | addition or subtraction of a constant above. This will | |
1523 | probably need to be changed for an object file format which | |
fdef3943 | 1524 | supports arbitrary expressions. */ |
2d034539 | 1525 | if (!(seg_left == absolute_section |
5a0ade8b | 1526 | && seg_right == absolute_section) |
0909233e AM |
1527 | && !(op == O_eq || op == O_ne) |
1528 | && !((op == O_subtract | |
1529 | || op == O_lt || op == O_le || op == O_ge || op == O_gt) | |
1530 | && seg_left == seg_right | |
1531 | && (seg_left != undefined_section | |
1532 | || add_symbol == op_symbol))) | |
2d034539 NC |
1533 | { |
1534 | /* Don't emit messages unless we're finalizing the symbol value, | |
1535 | otherwise we may get the same message multiple times. */ | |
1536 | if (finalize_syms) | |
5a0ade8b | 1537 | report_op_error (symp, add_symbol, op, op_symbol); |
2d034539 NC |
1538 | /* However do not move the symbol into the absolute section |
1539 | if it cannot currently be resolved - this would confuse | |
1540 | other parts of the assembler into believing that the | |
1541 | expression had been evaluated to zero. */ | |
1542 | else | |
1543 | move_seg_ok = 0; | |
1544 | } | |
1d3b2b27 | 1545 | |
2d034539 NC |
1546 | if (move_seg_ok |
1547 | && (final_seg == expr_section || final_seg == undefined_section)) | |
0909233e | 1548 | final_seg = absolute_section; |
252b5132 RH |
1549 | |
1550 | /* Check for division by zero. */ | |
1551 | if ((op == O_divide || op == O_modulus) && right == 0) | |
1552 | { | |
1553 | /* If seg_right is not absolute_section, then we've | |
e0890092 | 1554 | already issued a warning about using a bad symbol. */ |
6386f3a7 | 1555 | if (seg_right == absolute_section && finalize_syms) |
252b5132 | 1556 | { |
3b4dbbbf | 1557 | const char *file; |
252b5132 RH |
1558 | unsigned int line; |
1559 | ||
1560 | if (expr_symbol_where (symp, &file, &line)) | |
1561 | as_bad_where (file, line, _("division by zero")); | |
1562 | else | |
0e389e77 | 1563 | as_bad (_("division by zero when setting `%s'"), |
252b5132 RH |
1564 | S_GET_NAME (symp)); |
1565 | } | |
1566 | ||
1567 | right = 1; | |
1568 | } | |
d8d6da13 AM |
1569 | if ((op == O_left_shift || op == O_right_shift) |
1570 | && (valueT) right >= sizeof (valueT) * CHAR_BIT) | |
1571 | { | |
1572 | as_warn_value_out_of_range (_("shift count"), right, 0, | |
1573 | sizeof (valueT) * CHAR_BIT - 1, | |
1574 | NULL, 0); | |
1575 | left = right = 0; | |
1576 | } | |
252b5132 | 1577 | |
5014c2d2 | 1578 | switch (symp->x->value.X_op) |
252b5132 RH |
1579 | { |
1580 | case O_multiply: left *= right; break; | |
1581 | case O_divide: left /= right; break; | |
1582 | case O_modulus: left %= right; break; | |
d8d6da13 AM |
1583 | case O_left_shift: |
1584 | left = (valueT) left << (valueT) right; break; | |
1585 | case O_right_shift: | |
1586 | left = (valueT) left >> (valueT) right; break; | |
252b5132 RH |
1587 | case O_bit_inclusive_or: left |= right; break; |
1588 | case O_bit_or_not: left |= ~right; break; | |
1589 | case O_bit_exclusive_or: left ^= right; break; | |
1590 | case O_bit_and: left &= right; break; | |
1591 | case O_add: left += right; break; | |
1592 | case O_subtract: left -= right; break; | |
e0890092 AM |
1593 | case O_eq: |
1594 | case O_ne: | |
1595 | left = (left == right && seg_left == seg_right | |
1596 | && (seg_left != undefined_section | |
1597 | || add_symbol == op_symbol) | |
1598 | ? ~ (offsetT) 0 : 0); | |
5014c2d2 | 1599 | if (symp->x->value.X_op == O_ne) |
e0890092 AM |
1600 | left = ~left; |
1601 | break; | |
252b5132 RH |
1602 | case O_lt: left = left < right ? ~ (offsetT) 0 : 0; break; |
1603 | case O_le: left = left <= right ? ~ (offsetT) 0 : 0; break; | |
1604 | case O_ge: left = left >= right ? ~ (offsetT) 0 : 0; break; | |
1605 | case O_gt: left = left > right ? ~ (offsetT) 0 : 0; break; | |
1606 | case O_logical_and: left = left && right; break; | |
1607 | case O_logical_or: left = left || right; break; | |
6d6ad65b NC |
1608 | |
1609 | case O_illegal: | |
1610 | case O_absent: | |
1611 | case O_constant: | |
1612 | /* See PR 20895 for a reproducer. */ | |
1613 | as_bad (_("Invalid operation on symbol")); | |
1614 | goto exit_dont_set_value; | |
1615 | ||
1616 | default: | |
1617 | abort (); | |
252b5132 RH |
1618 | } |
1619 | ||
3c0d9d71 | 1620 | final_val += symp->frag->fr_address + left; |
252b5132 | 1621 | if (final_seg == expr_section || final_seg == undefined_section) |
784b640d AM |
1622 | { |
1623 | if (seg_left == undefined_section | |
1624 | || seg_right == undefined_section) | |
1625 | final_seg = undefined_section; | |
1626 | else if (seg_left == absolute_section) | |
1627 | final_seg = seg_right; | |
1628 | else | |
1629 | final_seg = seg_left; | |
1630 | } | |
49309057 ILT |
1631 | resolved = (symbol_resolved_p (add_symbol) |
1632 | && symbol_resolved_p (op_symbol)); | |
7c743825 | 1633 | break; |
252b5132 | 1634 | |
252b5132 RH |
1635 | case O_big: |
1636 | case O_illegal: | |
1637 | /* Give an error (below) if not in expr_section. We don't | |
1638 | want to worry about expr_section symbols, because they | |
1639 | are fictional (they are created as part of expression | |
1640 | resolution), and any problems may not actually mean | |
1641 | anything. */ | |
1642 | break; | |
1643 | } | |
1644 | ||
3c0d9d71 | 1645 | symp->flags.resolving = 0; |
252b5132 RH |
1646 | } |
1647 | ||
6386f3a7 | 1648 | if (finalize_syms) |
05bdb37e | 1649 | S_SET_VALUE (symp, final_val); |
252b5132 | 1650 | |
dc1e8a47 | 1651 | exit_dont_set_value: |
05bdb37e AM |
1652 | /* Always set the segment, even if not finalizing the value. |
1653 | The segment is used to determine whether a symbol is defined. */ | |
05bdb37e | 1654 | S_SET_SEGMENT (symp, final_seg); |
252b5132 | 1655 | |
252b5132 | 1656 | /* Don't worry if we can't resolve an expr_section symbol. */ |
6386f3a7 | 1657 | if (finalize_syms) |
252b5132 RH |
1658 | { |
1659 | if (resolved) | |
3c0d9d71 | 1660 | symp->flags.resolved = 1; |
252b5132 RH |
1661 | else if (S_GET_SEGMENT (symp) != expr_section) |
1662 | { | |
0e389e77 | 1663 | as_bad (_("can't resolve value for symbol `%s'"), |
7c743825 | 1664 | S_GET_NAME (symp)); |
3c0d9d71 | 1665 | symp->flags.resolved = 1; |
252b5132 RH |
1666 | } |
1667 | } | |
1668 | ||
1669 | return final_val; | |
1670 | } | |
1671 | ||
49309057 ILT |
1672 | /* A static function passed to hash_traverse. */ |
1673 | ||
d3b740ca ML |
1674 | static int |
1675 | resolve_local_symbol (void **slot, void *arg ATTRIBUTE_UNUSED) | |
49309057 | 1676 | { |
d3b740ca | 1677 | symbol_entry_t *entry = *((symbol_entry_t **) slot); |
5014c2d2 AM |
1678 | if (entry->sy.flags.local_symbol) |
1679 | resolve_symbol_value (&entry->sy); | |
d3b740ca ML |
1680 | |
1681 | return 1; | |
49309057 ILT |
1682 | } |
1683 | ||
49309057 ILT |
1684 | /* Resolve all local symbols. */ |
1685 | ||
1686 | void | |
74937d39 | 1687 | resolve_local_symbol_values (void) |
49309057 | 1688 | { |
5014c2d2 | 1689 | htab_traverse (sy_hash, resolve_local_symbol, NULL); |
49309057 ILT |
1690 | } |
1691 | ||
9497f5ac NC |
1692 | /* Obtain the current value of a symbol without changing any |
1693 | sub-expressions used. */ | |
1694 | ||
1695 | int | |
2e1e12b1 | 1696 | snapshot_symbol (symbolS **symbolPP, valueT *valueP, segT *segP, fragS **fragPP) |
9497f5ac | 1697 | { |
2e1e12b1 JB |
1698 | symbolS *symbolP = *symbolPP; |
1699 | ||
5014c2d2 | 1700 | if (symbolP->flags.local_symbol) |
9497f5ac NC |
1701 | { |
1702 | struct local_symbol *locsym = (struct local_symbol *) symbolP; | |
1703 | ||
3c0d9d71 AM |
1704 | *valueP = locsym->value; |
1705 | *segP = locsym->section; | |
5014c2d2 | 1706 | *fragPP = locsym->frag; |
9497f5ac NC |
1707 | } |
1708 | else | |
1709 | { | |
5014c2d2 | 1710 | expressionS exp = symbolP->x->value; |
9497f5ac | 1711 | |
3c0d9d71 | 1712 | if (!symbolP->flags.resolved && exp.X_op != O_illegal) |
9497f5ac NC |
1713 | { |
1714 | int resolved; | |
1715 | ||
3c0d9d71 | 1716 | if (symbolP->flags.resolving) |
9497f5ac | 1717 | return 0; |
3c0d9d71 | 1718 | symbolP->flags.resolving = 1; |
91d6fa6a | 1719 | resolved = resolve_expression (&exp); |
3c0d9d71 | 1720 | symbolP->flags.resolving = 0; |
9497f5ac NC |
1721 | if (!resolved) |
1722 | return 0; | |
1723 | ||
91d6fa6a | 1724 | switch (exp.X_op) |
9497f5ac NC |
1725 | { |
1726 | case O_constant: | |
1727 | case O_register: | |
2e1e12b1 | 1728 | if (!symbol_equated_p (symbolP)) |
9497f5ac | 1729 | break; |
2b0f3761 | 1730 | /* Fallthru. */ |
9497f5ac NC |
1731 | case O_symbol: |
1732 | case O_symbol_rva: | |
91d6fa6a | 1733 | symbolP = exp.X_add_symbol; |
9497f5ac NC |
1734 | break; |
1735 | default: | |
1736 | return 0; | |
1737 | } | |
1738 | } | |
1739 | ||
d96eea71 | 1740 | *symbolPP = symbolP; |
e78bb25c NC |
1741 | |
1742 | /* A bogus input file can result in resolve_expression() | |
1743 | generating a local symbol, so we have to check again. */ | |
5014c2d2 | 1744 | if (symbolP->flags.local_symbol) |
e78bb25c NC |
1745 | { |
1746 | struct local_symbol *locsym = (struct local_symbol *) symbolP; | |
1747 | ||
3c0d9d71 AM |
1748 | *valueP = locsym->value; |
1749 | *segP = locsym->section; | |
5014c2d2 | 1750 | *fragPP = locsym->frag; |
e78bb25c NC |
1751 | } |
1752 | else | |
1753 | { | |
1754 | *valueP = exp.X_add_number; | |
1755 | *segP = symbolP->bsym->section; | |
3c0d9d71 | 1756 | *fragPP = symbolP->frag; |
e78bb25c | 1757 | } |
9497f5ac NC |
1758 | |
1759 | if (*segP == expr_section) | |
91d6fa6a | 1760 | switch (exp.X_op) |
9497f5ac NC |
1761 | { |
1762 | case O_constant: *segP = absolute_section; break; | |
1763 | case O_register: *segP = reg_section; break; | |
1764 | default: break; | |
1765 | } | |
1766 | } | |
1767 | ||
1768 | return 1; | |
1769 | } | |
1770 | ||
252b5132 RH |
1771 | /* Dollar labels look like a number followed by a dollar sign. Eg, "42$". |
1772 | They are *really* local. That is, they go out of scope whenever we see a | |
1773 | label that isn't local. Also, like fb labels, there can be multiple | |
1774 | instances of a dollar label. Therefor, we name encode each instance with | |
1775 | the instance number, keep a list of defined symbols separate from the real | |
1776 | symbol table, and we treat these buggers as a sparse array. */ | |
1777 | ||
1778 | static long *dollar_labels; | |
1779 | static long *dollar_label_instances; | |
1780 | static char *dollar_label_defines; | |
30b940a0 AM |
1781 | static size_t dollar_label_count; |
1782 | static size_t dollar_label_max; | |
252b5132 | 1783 | |
7c743825 | 1784 | int |
74937d39 | 1785 | dollar_label_defined (long label) |
252b5132 RH |
1786 | { |
1787 | long *i; | |
1788 | ||
1789 | know ((dollar_labels != NULL) || (dollar_label_count == 0)); | |
1790 | ||
1791 | for (i = dollar_labels; i < dollar_labels + dollar_label_count; ++i) | |
1792 | if (*i == label) | |
1793 | return dollar_label_defines[i - dollar_labels]; | |
1794 | ||
7c743825 | 1795 | /* If we get here, label isn't defined. */ |
252b5132 | 1796 | return 0; |
7c743825 | 1797 | } |
252b5132 RH |
1798 | |
1799 | static long | |
74937d39 | 1800 | dollar_label_instance (long label) |
252b5132 RH |
1801 | { |
1802 | long *i; | |
1803 | ||
1804 | know ((dollar_labels != NULL) || (dollar_label_count == 0)); | |
1805 | ||
1806 | for (i = dollar_labels; i < dollar_labels + dollar_label_count; ++i) | |
1807 | if (*i == label) | |
1808 | return (dollar_label_instances[i - dollar_labels]); | |
1809 | ||
7c743825 KH |
1810 | /* If we get here, we haven't seen the label before. |
1811 | Therefore its instance count is zero. */ | |
252b5132 RH |
1812 | return 0; |
1813 | } | |
1814 | ||
7c743825 | 1815 | void |
74937d39 | 1816 | dollar_label_clear (void) |
252b5132 | 1817 | { |
30b940a0 AM |
1818 | if (dollar_label_count) |
1819 | memset (dollar_label_defines, '\0', dollar_label_count); | |
252b5132 RH |
1820 | } |
1821 | ||
1822 | #define DOLLAR_LABEL_BUMP_BY 10 | |
1823 | ||
7c743825 | 1824 | void |
74937d39 | 1825 | define_dollar_label (long label) |
252b5132 RH |
1826 | { |
1827 | long *i; | |
1828 | ||
1829 | for (i = dollar_labels; i < dollar_labels + dollar_label_count; ++i) | |
1830 | if (*i == label) | |
1831 | { | |
1832 | ++dollar_label_instances[i - dollar_labels]; | |
1833 | dollar_label_defines[i - dollar_labels] = 1; | |
1834 | return; | |
1835 | } | |
1836 | ||
7c743825 | 1837 | /* If we get to here, we don't have label listed yet. */ |
252b5132 RH |
1838 | |
1839 | if (dollar_labels == NULL) | |
1840 | { | |
325801bd TS |
1841 | dollar_labels = XNEWVEC (long, DOLLAR_LABEL_BUMP_BY); |
1842 | dollar_label_instances = XNEWVEC (long, DOLLAR_LABEL_BUMP_BY); | |
add39d23 | 1843 | dollar_label_defines = XNEWVEC (char, DOLLAR_LABEL_BUMP_BY); |
252b5132 RH |
1844 | dollar_label_max = DOLLAR_LABEL_BUMP_BY; |
1845 | dollar_label_count = 0; | |
1846 | } | |
1847 | else if (dollar_label_count == dollar_label_max) | |
1848 | { | |
1849 | dollar_label_max += DOLLAR_LABEL_BUMP_BY; | |
325801bd TS |
1850 | dollar_labels = XRESIZEVEC (long, dollar_labels, dollar_label_max); |
1851 | dollar_label_instances = XRESIZEVEC (long, dollar_label_instances, | |
1852 | dollar_label_max); | |
add39d23 TS |
1853 | dollar_label_defines = XRESIZEVEC (char, dollar_label_defines, |
1854 | dollar_label_max); | |
7c743825 | 1855 | } /* if we needed to grow */ |
252b5132 RH |
1856 | |
1857 | dollar_labels[dollar_label_count] = label; | |
1858 | dollar_label_instances[dollar_label_count] = 1; | |
1859 | dollar_label_defines[dollar_label_count] = 1; | |
1860 | ++dollar_label_count; | |
1861 | } | |
1862 | ||
7c743825 KH |
1863 | /* Caller must copy returned name: we re-use the area for the next name. |
1864 | ||
2b0f3761 | 1865 | The mth occurrence of label n: is turned into the symbol "Ln^Am" |
7c743825 KH |
1866 | where n is the label number and m is the instance number. "L" makes |
1867 | it a label discarded unless debugging and "^A"('\1') ensures no | |
1868 | ordinary symbol SHOULD get the same name as a local label | |
1869 | symbol. The first "4:" is "L4^A1" - the m numbers begin at 1. | |
1870 | ||
1871 | fb labels get the same treatment, except that ^B is used in place | |
1872 | of ^A. */ | |
1873 | ||
1874 | char * /* Return local label name. */ | |
ed9e98c2 AM |
1875 | dollar_label_name (long n, /* we just saw "n$:" : n a number. */ |
1876 | int augend /* 0 for current instance, 1 for new instance. */) | |
252b5132 RH |
1877 | { |
1878 | long i; | |
7c743825 | 1879 | /* Returned to caller, then copied. Used for created names ("4f"). */ |
252b5132 | 1880 | static char symbol_name_build[24]; |
ed9e98c2 AM |
1881 | char *p; |
1882 | char *q; | |
7c743825 | 1883 | char symbol_name_temporary[20]; /* Build up a number, BACKWARDS. */ |
252b5132 RH |
1884 | |
1885 | know (n >= 0); | |
1886 | know (augend == 0 || augend == 1); | |
1887 | p = symbol_name_build; | |
f84dd1f0 NC |
1888 | #ifdef LOCAL_LABEL_PREFIX |
1889 | *p++ = LOCAL_LABEL_PREFIX; | |
1890 | #endif | |
252b5132 RH |
1891 | *p++ = 'L'; |
1892 | ||
7c743825 KH |
1893 | /* Next code just does sprintf( {}, "%d", n); */ |
1894 | /* Label number. */ | |
252b5132 RH |
1895 | q = symbol_name_temporary; |
1896 | for (*q++ = 0, i = n; i; ++q) | |
1897 | { | |
1898 | *q = i % 10 + '0'; | |
1899 | i /= 10; | |
1900 | } | |
1901 | while ((*p = *--q) != '\0') | |
1902 | ++p; | |
1903 | ||
aa257fcd | 1904 | *p++ = DOLLAR_LABEL_CHAR; /* ^A */ |
252b5132 | 1905 | |
7c743825 | 1906 | /* Instance number. */ |
252b5132 RH |
1907 | q = symbol_name_temporary; |
1908 | for (*q++ = 0, i = dollar_label_instance (n) + augend; i; ++q) | |
1909 | { | |
1910 | *q = i % 10 + '0'; | |
1911 | i /= 10; | |
1912 | } | |
5bb3703f | 1913 | while ((*p++ = *--q) != '\0'); |
252b5132 | 1914 | |
7c743825 | 1915 | /* The label, as a '\0' ended string, starts at symbol_name_build. */ |
252b5132 RH |
1916 | return symbol_name_build; |
1917 | } | |
1918 | ||
47eebc20 | 1919 | /* Somebody else's idea of local labels. They are made by "n:" where n |
7c743825 KH |
1920 | is any decimal digit. Refer to them with |
1921 | "nb" for previous (backward) n: | |
1922 | or "nf" for next (forward) n:. | |
1923 | ||
1924 | We do a little better and let n be any number, not just a single digit, but | |
1925 | since the other guy's assembler only does ten, we treat the first ten | |
1926 | specially. | |
1927 | ||
1928 | Like someone else's assembler, we have one set of local label counters for | |
1929 | entire assembly, not one set per (sub)segment like in most assemblers. This | |
1930 | implies that one can refer to a label in another segment, and indeed some | |
1931 | crufty compilers have done just that. | |
1932 | ||
1933 | Since there could be a LOT of these things, treat them as a sparse | |
1934 | array. */ | |
252b5132 RH |
1935 | |
1936 | #define FB_LABEL_SPECIAL (10) | |
1937 | ||
1938 | static long fb_low_counter[FB_LABEL_SPECIAL]; | |
1939 | static long *fb_labels; | |
1940 | static long *fb_label_instances; | |
1941 | static long fb_label_count; | |
1942 | static long fb_label_max; | |
1943 | ||
7c743825 | 1944 | /* This must be more than FB_LABEL_SPECIAL. */ |
252b5132 RH |
1945 | #define FB_LABEL_BUMP_BY (FB_LABEL_SPECIAL + 6) |
1946 | ||
7c743825 | 1947 | static void |
74937d39 | 1948 | fb_label_init (void) |
252b5132 RH |
1949 | { |
1950 | memset ((void *) fb_low_counter, '\0', sizeof (fb_low_counter)); | |
7c743825 | 1951 | } |
252b5132 | 1952 | |
7c743825 KH |
1953 | /* Add one to the instance number of this fb label. */ |
1954 | ||
1955 | void | |
74937d39 | 1956 | fb_label_instance_inc (long label) |
252b5132 RH |
1957 | { |
1958 | long *i; | |
1959 | ||
b4e6cb80 | 1960 | if ((unsigned long) label < FB_LABEL_SPECIAL) |
252b5132 RH |
1961 | { |
1962 | ++fb_low_counter[label]; | |
1963 | return; | |
1964 | } | |
1965 | ||
1966 | if (fb_labels != NULL) | |
1967 | { | |
1968 | for (i = fb_labels + FB_LABEL_SPECIAL; | |
1969 | i < fb_labels + fb_label_count; ++i) | |
1970 | { | |
1971 | if (*i == label) | |
1972 | { | |
1973 | ++fb_label_instances[i - fb_labels]; | |
1974 | return; | |
7c743825 KH |
1975 | } /* if we find it */ |
1976 | } /* for each existing label */ | |
252b5132 RH |
1977 | } |
1978 | ||
7c743825 | 1979 | /* If we get to here, we don't have label listed yet. */ |
252b5132 RH |
1980 | |
1981 | if (fb_labels == NULL) | |
1982 | { | |
325801bd TS |
1983 | fb_labels = XNEWVEC (long, FB_LABEL_BUMP_BY); |
1984 | fb_label_instances = XNEWVEC (long, FB_LABEL_BUMP_BY); | |
252b5132 RH |
1985 | fb_label_max = FB_LABEL_BUMP_BY; |
1986 | fb_label_count = FB_LABEL_SPECIAL; | |
1987 | ||
1988 | } | |
1989 | else if (fb_label_count == fb_label_max) | |
1990 | { | |
1991 | fb_label_max += FB_LABEL_BUMP_BY; | |
325801bd TS |
1992 | fb_labels = XRESIZEVEC (long, fb_labels, fb_label_max); |
1993 | fb_label_instances = XRESIZEVEC (long, fb_label_instances, fb_label_max); | |
7c743825 | 1994 | } /* if we needed to grow */ |
252b5132 RH |
1995 | |
1996 | fb_labels[fb_label_count] = label; | |
1997 | fb_label_instances[fb_label_count] = 1; | |
1998 | ++fb_label_count; | |
1999 | } | |
2000 | ||
7c743825 | 2001 | static long |
74937d39 | 2002 | fb_label_instance (long label) |
252b5132 RH |
2003 | { |
2004 | long *i; | |
2005 | ||
b4e6cb80 | 2006 | if ((unsigned long) label < FB_LABEL_SPECIAL) |
252b5132 RH |
2007 | { |
2008 | return (fb_low_counter[label]); | |
2009 | } | |
2010 | ||
2011 | if (fb_labels != NULL) | |
2012 | { | |
2013 | for (i = fb_labels + FB_LABEL_SPECIAL; | |
2014 | i < fb_labels + fb_label_count; ++i) | |
2015 | { | |
2016 | if (*i == label) | |
2017 | { | |
2018 | return (fb_label_instances[i - fb_labels]); | |
7c743825 KH |
2019 | } /* if we find it */ |
2020 | } /* for each existing label */ | |
252b5132 RH |
2021 | } |
2022 | ||
2023 | /* We didn't find the label, so this must be a reference to the | |
2024 | first instance. */ | |
2025 | return 0; | |
2026 | } | |
2027 | ||
7c743825 KH |
2028 | /* Caller must copy returned name: we re-use the area for the next name. |
2029 | ||
2b0f3761 | 2030 | The mth occurrence of label n: is turned into the symbol "Ln^Bm" |
7c743825 KH |
2031 | where n is the label number and m is the instance number. "L" makes |
2032 | it a label discarded unless debugging and "^B"('\2') ensures no | |
2033 | ordinary symbol SHOULD get the same name as a local label | |
2034 | symbol. The first "4:" is "L4^B1" - the m numbers begin at 1. | |
2035 | ||
2036 | dollar labels get the same treatment, except that ^A is used in | |
2037 | place of ^B. */ | |
2038 | ||
2039 | char * /* Return local label name. */ | |
74937d39 KH |
2040 | fb_label_name (long n, /* We just saw "n:", "nf" or "nb" : n a number. */ |
2041 | long augend /* 0 for nb, 1 for n:, nf. */) | |
252b5132 RH |
2042 | { |
2043 | long i; | |
7c743825 | 2044 | /* Returned to caller, then copied. Used for created names ("4f"). */ |
252b5132 | 2045 | static char symbol_name_build[24]; |
ed9e98c2 AM |
2046 | char *p; |
2047 | char *q; | |
7c743825 | 2048 | char symbol_name_temporary[20]; /* Build up a number, BACKWARDS. */ |
252b5132 RH |
2049 | |
2050 | know (n >= 0); | |
a76903bf | 2051 | #ifdef TC_MMIX |
71ba24a1 | 2052 | know ((unsigned long) augend <= 2 /* See mmix_fb_label. */); |
a76903bf | 2053 | #else |
71ba24a1 | 2054 | know ((unsigned long) augend <= 1); |
a76903bf | 2055 | #endif |
252b5132 | 2056 | p = symbol_name_build; |
aa257fcd NC |
2057 | #ifdef LOCAL_LABEL_PREFIX |
2058 | *p++ = LOCAL_LABEL_PREFIX; | |
2059 | #endif | |
252b5132 RH |
2060 | *p++ = 'L'; |
2061 | ||
7c743825 KH |
2062 | /* Next code just does sprintf( {}, "%d", n); */ |
2063 | /* Label number. */ | |
252b5132 RH |
2064 | q = symbol_name_temporary; |
2065 | for (*q++ = 0, i = n; i; ++q) | |
2066 | { | |
2067 | *q = i % 10 + '0'; | |
2068 | i /= 10; | |
2069 | } | |
2070 | while ((*p = *--q) != '\0') | |
2071 | ++p; | |
2072 | ||
aa257fcd | 2073 | *p++ = LOCAL_LABEL_CHAR; /* ^B */ |
252b5132 | 2074 | |
7c743825 | 2075 | /* Instance number. */ |
252b5132 RH |
2076 | q = symbol_name_temporary; |
2077 | for (*q++ = 0, i = fb_label_instance (n) + augend; i; ++q) | |
2078 | { | |
2079 | *q = i % 10 + '0'; | |
2080 | i /= 10; | |
2081 | } | |
5bb3703f | 2082 | while ((*p++ = *--q) != '\0'); |
252b5132 | 2083 | |
7c743825 | 2084 | /* The label, as a '\0' ended string, starts at symbol_name_build. */ |
252b5132 | 2085 | return (symbol_name_build); |
7c743825 | 2086 | } |
252b5132 | 2087 | |
7c743825 KH |
2088 | /* Decode name that may have been generated by foo_label_name() above. |
2089 | If the name wasn't generated by foo_label_name(), then return it | |
2090 | unaltered. This is used for error messages. */ | |
252b5132 RH |
2091 | |
2092 | char * | |
74937d39 | 2093 | decode_local_label_name (char *s) |
252b5132 RH |
2094 | { |
2095 | char *p; | |
2096 | char *symbol_decode; | |
2097 | int label_number; | |
2098 | int instance_number; | |
cd0bbe6e | 2099 | const char *type; |
d95767bf | 2100 | const char *message_format; |
91d6fa6a | 2101 | int lindex = 0; |
43ad3147 | 2102 | |
aa257fcd | 2103 | #ifdef LOCAL_LABEL_PREFIX |
91d6fa6a NC |
2104 | if (s[lindex] == LOCAL_LABEL_PREFIX) |
2105 | ++lindex; | |
aa257fcd | 2106 | #endif |
43ad3147 | 2107 | |
91d6fa6a | 2108 | if (s[lindex] != 'L') |
252b5132 RH |
2109 | return s; |
2110 | ||
91d6fa6a | 2111 | for (label_number = 0, p = s + lindex + 1; ISDIGIT (*p); ++p) |
252b5132 RH |
2112 | label_number = (10 * label_number) + *p - '0'; |
2113 | ||
aa257fcd | 2114 | if (*p == DOLLAR_LABEL_CHAR) |
252b5132 | 2115 | type = "dollar"; |
aa257fcd | 2116 | else if (*p == LOCAL_LABEL_CHAR) |
252b5132 RH |
2117 | type = "fb"; |
2118 | else | |
2119 | return s; | |
2120 | ||
3882b010 | 2121 | for (instance_number = 0, p++; ISDIGIT (*p); ++p) |
252b5132 RH |
2122 | instance_number = (10 * instance_number) + *p - '0'; |
2123 | ||
d95767bf | 2124 | message_format = _("\"%d\" (instance number %d of a %s label)"); |
1e9cc1c2 | 2125 | symbol_decode = (char *) obstack_alloc (¬es, strlen (message_format) + 30); |
252b5132 RH |
2126 | sprintf (symbol_decode, message_format, label_number, instance_number, type); |
2127 | ||
2128 | return symbol_decode; | |
2129 | } | |
2130 | ||
2131 | /* Get the value of a symbol. */ | |
2132 | ||
2133 | valueT | |
74937d39 | 2134 | S_GET_VALUE (symbolS *s) |
252b5132 | 2135 | { |
5014c2d2 | 2136 | if (s->flags.local_symbol) |
ac62c346 | 2137 | return resolve_symbol_value (s); |
49309057 | 2138 | |
3c0d9d71 | 2139 | if (!s->flags.resolved) |
e46d99eb | 2140 | { |
6386f3a7 AM |
2141 | valueT val = resolve_symbol_value (s); |
2142 | if (!finalize_syms) | |
e46d99eb AM |
2143 | return val; |
2144 | } | |
06e77878 | 2145 | if (S_IS_WEAKREFR (s)) |
5014c2d2 | 2146 | return S_GET_VALUE (s->x->value.X_add_symbol); |
06e77878 | 2147 | |
5014c2d2 | 2148 | if (s->x->value.X_op != O_constant) |
252b5132 | 2149 | { |
3c0d9d71 | 2150 | if (! s->flags.resolved |
5014c2d2 | 2151 | || s->x->value.X_op != O_symbol |
252b5132 | 2152 | || (S_IS_DEFINED (s) && ! S_IS_COMMON (s))) |
0e389e77 | 2153 | as_bad (_("attempt to get value of unresolved symbol `%s'"), |
252b5132 | 2154 | S_GET_NAME (s)); |
252b5132 | 2155 | } |
5014c2d2 | 2156 | return (valueT) s->x->value.X_add_number; |
252b5132 RH |
2157 | } |
2158 | ||
2159 | /* Set the value of a symbol. */ | |
2160 | ||
2161 | void | |
74937d39 | 2162 | S_SET_VALUE (symbolS *s, valueT val) |
252b5132 | 2163 | { |
5014c2d2 | 2164 | if (s->flags.local_symbol) |
49309057 | 2165 | { |
3c0d9d71 | 2166 | ((struct local_symbol *) s)->value = val; |
49309057 ILT |
2167 | return; |
2168 | } | |
2169 | ||
5014c2d2 AM |
2170 | s->x->value.X_op = O_constant; |
2171 | s->x->value.X_add_number = (offsetT) val; | |
2172 | s->x->value.X_unsigned = 0; | |
06e77878 | 2173 | S_CLEAR_WEAKREFR (s); |
252b5132 RH |
2174 | } |
2175 | ||
2176 | void | |
74937d39 | 2177 | copy_symbol_attributes (symbolS *dest, symbolS *src) |
252b5132 | 2178 | { |
5014c2d2 AM |
2179 | if (dest->flags.local_symbol) |
2180 | dest = local_symbol_convert (dest); | |
2181 | if (src->flags.local_symbol) | |
2182 | src = local_symbol_convert (src); | |
49309057 | 2183 | |
252b5132 RH |
2184 | /* In an expression, transfer the settings of these flags. |
2185 | The user can override later, of course. */ | |
ad04f5ce L |
2186 | #define COPIED_SYMFLAGS (BSF_FUNCTION | BSF_OBJECT \ |
2187 | | BSF_GNU_INDIRECT_FUNCTION) | |
252b5132 | 2188 | dest->bsym->flags |= src->bsym->flags & COPIED_SYMFLAGS; |
252b5132 RH |
2189 | |
2190 | #ifdef OBJ_COPY_SYMBOL_ATTRIBUTES | |
2191 | OBJ_COPY_SYMBOL_ATTRIBUTES (dest, src); | |
2192 | #endif | |
794ba86a DJ |
2193 | |
2194 | #ifdef TC_COPY_SYMBOL_ATTRIBUTES | |
2195 | TC_COPY_SYMBOL_ATTRIBUTES (dest, src); | |
2196 | #endif | |
252b5132 RH |
2197 | } |
2198 | ||
252b5132 | 2199 | int |
74937d39 | 2200 | S_IS_FUNCTION (symbolS *s) |
252b5132 | 2201 | { |
49309057 ILT |
2202 | flagword flags; |
2203 | ||
5014c2d2 | 2204 | if (s->flags.local_symbol) |
49309057 ILT |
2205 | return 0; |
2206 | ||
2207 | flags = s->bsym->flags; | |
252b5132 RH |
2208 | |
2209 | return (flags & BSF_FUNCTION) != 0; | |
2210 | } | |
2211 | ||
2212 | int | |
74937d39 | 2213 | S_IS_EXTERNAL (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 | 2221 | |
7c743825 | 2222 | /* Sanity check. */ |
252b5132 RH |
2223 | if ((flags & BSF_LOCAL) && (flags & BSF_GLOBAL)) |
2224 | abort (); | |
2225 | ||
2226 | return (flags & BSF_GLOBAL) != 0; | |
2227 | } | |
2228 | ||
2229 | int | |
74937d39 | 2230 | S_IS_WEAK (symbolS *s) |
252b5132 | 2231 | { |
5014c2d2 | 2232 | if (s->flags.local_symbol) |
49309057 | 2233 | return 0; |
06e77878 AO |
2234 | /* Conceptually, a weakrefr is weak if the referenced symbol is. We |
2235 | could probably handle a WEAKREFR as always weak though. E.g., if | |
2236 | the referenced symbol has lost its weak status, there's no reason | |
2237 | to keep handling the weakrefr as if it was weak. */ | |
2238 | if (S_IS_WEAKREFR (s)) | |
5014c2d2 | 2239 | return S_IS_WEAK (s->x->value.X_add_symbol); |
252b5132 RH |
2240 | return (s->bsym->flags & BSF_WEAK) != 0; |
2241 | } | |
2242 | ||
06e77878 AO |
2243 | int |
2244 | S_IS_WEAKREFR (symbolS *s) | |
2245 | { | |
5014c2d2 | 2246 | if (s->flags.local_symbol) |
06e77878 | 2247 | return 0; |
3c0d9d71 | 2248 | return s->flags.weakrefr != 0; |
06e77878 AO |
2249 | } |
2250 | ||
2251 | int | |
2252 | S_IS_WEAKREFD (symbolS *s) | |
2253 | { | |
5014c2d2 | 2254 | if (s->flags.local_symbol) |
06e77878 | 2255 | return 0; |
3c0d9d71 | 2256 | return s->flags.weakrefd != 0; |
06e77878 AO |
2257 | } |
2258 | ||
252b5132 | 2259 | int |
74937d39 | 2260 | S_IS_COMMON (symbolS *s) |
252b5132 | 2261 | { |
5014c2d2 | 2262 | if (s->flags.local_symbol) |
49309057 | 2263 | return 0; |
252b5132 RH |
2264 | return bfd_is_com_section (s->bsym->section); |
2265 | } | |
2266 | ||
2267 | int | |
74937d39 | 2268 | S_IS_DEFINED (symbolS *s) |
252b5132 | 2269 | { |
5014c2d2 | 2270 | if (s->flags.local_symbol) |
3c0d9d71 | 2271 | return ((struct local_symbol *) s)->section != undefined_section; |
252b5132 RH |
2272 | return s->bsym->section != undefined_section; |
2273 | } | |
2274 | ||
a161fe53 AM |
2275 | |
2276 | #ifndef EXTERN_FORCE_RELOC | |
2277 | #define EXTERN_FORCE_RELOC IS_ELF | |
2278 | #endif | |
2279 | ||
2280 | /* Return true for symbols that should not be reduced to section | |
2281 | symbols or eliminated from expressions, because they may be | |
2282 | overridden by the linker. */ | |
2283 | int | |
74937d39 | 2284 | S_FORCE_RELOC (symbolS *s, int strict) |
a161fe53 | 2285 | { |
f2d830a5 | 2286 | segT sec; |
5014c2d2 | 2287 | if (s->flags.local_symbol) |
3c0d9d71 | 2288 | sec = ((struct local_symbol *) s)->section; |
f2d830a5 AM |
2289 | else |
2290 | { | |
2291 | if ((strict | |
ae6063d4 AM |
2292 | && ((s->bsym->flags & BSF_WEAK) != 0 |
2293 | || (EXTERN_FORCE_RELOC | |
2294 | && (s->bsym->flags & BSF_GLOBAL) != 0))) | |
f2d830a5 AM |
2295 | || (s->bsym->flags & BSF_GNU_INDIRECT_FUNCTION) != 0) |
2296 | return TRUE; | |
2297 | sec = s->bsym->section; | |
2298 | } | |
2299 | return bfd_is_und_section (sec) || bfd_is_com_section (sec); | |
a161fe53 AM |
2300 | } |
2301 | ||
252b5132 | 2302 | int |
74937d39 | 2303 | S_IS_DEBUG (symbolS *s) |
252b5132 | 2304 | { |
5014c2d2 | 2305 | if (s->flags.local_symbol) |
49309057 | 2306 | return 0; |
252b5132 RH |
2307 | if (s->bsym->flags & BSF_DEBUGGING) |
2308 | return 1; | |
2309 | return 0; | |
2310 | } | |
2311 | ||
2312 | int | |
74937d39 | 2313 | S_IS_LOCAL (symbolS *s) |
252b5132 | 2314 | { |
49309057 | 2315 | flagword flags; |
252b5132 RH |
2316 | const char *name; |
2317 | ||
5014c2d2 | 2318 | if (s->flags.local_symbol) |
49309057 ILT |
2319 | return 1; |
2320 | ||
2321 | flags = s->bsym->flags; | |
2322 | ||
7c743825 | 2323 | /* Sanity check. */ |
252b5132 RH |
2324 | if ((flags & BSF_LOCAL) && (flags & BSF_GLOBAL)) |
2325 | abort (); | |
2326 | ||
e6f7f6d1 | 2327 | if (bfd_asymbol_section (s->bsym) == reg_section) |
252b5132 RH |
2328 | return 1; |
2329 | ||
2330 | if (flag_strip_local_absolute | |
bb82af9f NC |
2331 | /* Keep BSF_FILE symbols in order to allow debuggers to identify |
2332 | the source file even when the object file is stripped. */ | |
2333 | && (flags & (BSF_GLOBAL | BSF_FILE)) == 0 | |
e6f7f6d1 | 2334 | && bfd_asymbol_section (s->bsym) == absolute_section) |
252b5132 RH |
2335 | return 1; |
2336 | ||
2337 | name = S_GET_NAME (s); | |
2338 | return (name != NULL | |
2339 | && ! S_IS_DEBUG (s) | |
aa257fcd NC |
2340 | && (strchr (name, DOLLAR_LABEL_CHAR) |
2341 | || strchr (name, LOCAL_LABEL_CHAR) | |
2469b3c5 JW |
2342 | #if FAKE_LABEL_CHAR != DOLLAR_LABEL_CHAR |
2343 | || strchr (name, FAKE_LABEL_CHAR) | |
2344 | #endif | |
df58fc94 | 2345 | || TC_LABEL_IS_LOCAL (name) |
252b5132 RH |
2346 | || (! flag_keep_locals |
2347 | && (bfd_is_local_label (stdoutput, s->bsym) | |
2348 | || (flag_mri | |
2349 | && name[0] == '?' | |
2350 | && name[1] == '?'))))); | |
2351 | } | |
2352 | ||
252b5132 | 2353 | int |
74937d39 | 2354 | S_IS_STABD (symbolS *s) |
252b5132 RH |
2355 | { |
2356 | return S_GET_NAME (s) == 0; | |
2357 | } | |
2358 | ||
6885131b AM |
2359 | int |
2360 | S_CAN_BE_REDEFINED (const symbolS *s) | |
2361 | { | |
5014c2d2 AM |
2362 | if (s->flags.local_symbol) |
2363 | return (((struct local_symbol *) s)->frag | |
6885131b AM |
2364 | == &predefined_address_frag); |
2365 | /* Permit register names to be redefined. */ | |
2366 | return s->bsym->section == reg_section; | |
2367 | } | |
2368 | ||
9497f5ac NC |
2369 | int |
2370 | S_IS_VOLATILE (const symbolS *s) | |
2371 | { | |
5014c2d2 | 2372 | if (s->flags.local_symbol) |
9497f5ac | 2373 | return 0; |
3c0d9d71 | 2374 | return s->flags.volatil; |
9497f5ac NC |
2375 | } |
2376 | ||
2377 | int | |
2378 | S_IS_FORWARD_REF (const symbolS *s) | |
2379 | { | |
5014c2d2 | 2380 | if (s->flags.local_symbol) |
9497f5ac | 2381 | return 0; |
3c0d9d71 | 2382 | return s->flags.forward_ref; |
9497f5ac NC |
2383 | } |
2384 | ||
9758f3fc | 2385 | const char * |
74937d39 | 2386 | S_GET_NAME (symbolS *s) |
252b5132 | 2387 | { |
5014c2d2 | 2388 | return s->name; |
252b5132 RH |
2389 | } |
2390 | ||
2391 | segT | |
74937d39 | 2392 | S_GET_SEGMENT (symbolS *s) |
252b5132 | 2393 | { |
5014c2d2 | 2394 | if (s->flags.local_symbol) |
3c0d9d71 | 2395 | return ((struct local_symbol *) s)->section; |
252b5132 RH |
2396 | return s->bsym->section; |
2397 | } | |
2398 | ||
2399 | void | |
74937d39 | 2400 | S_SET_SEGMENT (symbolS *s, segT seg) |
252b5132 | 2401 | { |
5014c2d2 | 2402 | if (s->flags.local_symbol) |
49309057 | 2403 | { |
5014c2d2 AM |
2404 | ((struct local_symbol *) s)->section = seg; |
2405 | return; | |
49309057 ILT |
2406 | } |
2407 | ||
5014c2d2 AM |
2408 | /* Don't reassign section symbols. The direct reason is to prevent seg |
2409 | faults assigning back to const global symbols such as *ABS*, but it | |
2410 | shouldn't happen anyway. */ | |
252b5132 RH |
2411 | if (s->bsym->flags & BSF_SECTION_SYM) |
2412 | { | |
2413 | if (s->bsym->section != seg) | |
7c743825 | 2414 | abort (); |
252b5132 RH |
2415 | } |
2416 | else | |
2417 | s->bsym->section = seg; | |
2418 | } | |
2419 | ||
2420 | void | |
74937d39 | 2421 | S_SET_EXTERNAL (symbolS *s) |
252b5132 | 2422 | { |
5014c2d2 AM |
2423 | if (s->flags.local_symbol) |
2424 | s = local_symbol_convert (s); | |
252b5132 RH |
2425 | if ((s->bsym->flags & BSF_WEAK) != 0) |
2426 | { | |
2427 | /* Let .weak override .global. */ | |
2428 | return; | |
2429 | } | |
4d7c34bf NC |
2430 | if (s->bsym->flags & BSF_SECTION_SYM) |
2431 | { | |
4d7c34bf | 2432 | /* Do not reassign section symbols. */ |
3b4dbbbf | 2433 | as_warn (_("section symbols are already global")); |
4d7c34bf NC |
2434 | return; |
2435 | } | |
97c4f2d9 | 2436 | #ifndef TC_GLOBAL_REGISTER_SYMBOL_OK |
d0548f34 L |
2437 | if (S_GET_SEGMENT (s) == reg_section) |
2438 | { | |
2439 | as_bad ("can't make register symbol `%s' global", | |
2440 | S_GET_NAME (s)); | |
2441 | return; | |
2442 | } | |
97c4f2d9 | 2443 | #endif |
252b5132 | 2444 | s->bsym->flags |= BSF_GLOBAL; |
7c743825 | 2445 | s->bsym->flags &= ~(BSF_LOCAL | BSF_WEAK); |
977cdf5a | 2446 | |
22ba0981 | 2447 | #ifdef TE_PE |
977cdf5a NC |
2448 | if (! an_external_name && S_GET_NAME(s)[0] != '.') |
2449 | an_external_name = S_GET_NAME (s); | |
2450 | #endif | |
252b5132 RH |
2451 | } |
2452 | ||
2453 | void | |
74937d39 | 2454 | S_CLEAR_EXTERNAL (symbolS *s) |
252b5132 | 2455 | { |
5014c2d2 | 2456 | if (s->flags.local_symbol) |
49309057 | 2457 | return; |
252b5132 RH |
2458 | if ((s->bsym->flags & BSF_WEAK) != 0) |
2459 | { | |
2460 | /* Let .weak override. */ | |
2461 | return; | |
2462 | } | |
2463 | s->bsym->flags |= BSF_LOCAL; | |
7c743825 | 2464 | s->bsym->flags &= ~(BSF_GLOBAL | BSF_WEAK); |
252b5132 RH |
2465 | } |
2466 | ||
2467 | void | |
74937d39 | 2468 | S_SET_WEAK (symbolS *s) |
252b5132 | 2469 | { |
5014c2d2 AM |
2470 | if (s->flags.local_symbol) |
2471 | s = local_symbol_convert (s); | |
06e77878 AO |
2472 | #ifdef obj_set_weak_hook |
2473 | obj_set_weak_hook (s); | |
2474 | #endif | |
252b5132 | 2475 | s->bsym->flags |= BSF_WEAK; |
7c743825 | 2476 | s->bsym->flags &= ~(BSF_GLOBAL | BSF_LOCAL); |
252b5132 RH |
2477 | } |
2478 | ||
06e77878 AO |
2479 | void |
2480 | S_SET_WEAKREFR (symbolS *s) | |
2481 | { | |
5014c2d2 AM |
2482 | if (s->flags.local_symbol) |
2483 | s = local_symbol_convert (s); | |
3c0d9d71 | 2484 | s->flags.weakrefr = 1; |
06e77878 AO |
2485 | /* If the alias was already used, make sure we mark the target as |
2486 | used as well, otherwise it might be dropped from the symbol | |
2487 | table. This may have unintended side effects if the alias is | |
2488 | later redirected to another symbol, such as keeping the unused | |
2489 | previous target in the symbol table. Since it will be weak, it's | |
2490 | not a big deal. */ | |
3c0d9d71 | 2491 | if (s->flags.used) |
5014c2d2 | 2492 | symbol_mark_used (s->x->value.X_add_symbol); |
06e77878 AO |
2493 | } |
2494 | ||
2495 | void | |
2496 | S_CLEAR_WEAKREFR (symbolS *s) | |
2497 | { | |
5014c2d2 | 2498 | if (s->flags.local_symbol) |
06e77878 | 2499 | return; |
3c0d9d71 | 2500 | s->flags.weakrefr = 0; |
06e77878 AO |
2501 | } |
2502 | ||
2503 | void | |
2504 | S_SET_WEAKREFD (symbolS *s) | |
2505 | { | |
5014c2d2 AM |
2506 | if (s->flags.local_symbol) |
2507 | s = local_symbol_convert (s); | |
3c0d9d71 | 2508 | s->flags.weakrefd = 1; |
06e77878 AO |
2509 | S_SET_WEAK (s); |
2510 | } | |
2511 | ||
2512 | void | |
2513 | S_CLEAR_WEAKREFD (symbolS *s) | |
2514 | { | |
5014c2d2 | 2515 | if (s->flags.local_symbol) |
06e77878 | 2516 | return; |
3c0d9d71 | 2517 | if (s->flags.weakrefd) |
06e77878 | 2518 | { |
3c0d9d71 | 2519 | s->flags.weakrefd = 0; |
06e77878 AO |
2520 | /* If a weakref target symbol is weak, then it was never |
2521 | referenced directly before, not even in a .global directive, | |
2522 | so decay it to local. If it remains undefined, it will be | |
2523 | later turned into a global, like any other undefined | |
2524 | symbol. */ | |
2525 | if (s->bsym->flags & BSF_WEAK) | |
2526 | { | |
2527 | #ifdef obj_clear_weak_hook | |
2528 | obj_clear_weak_hook (s); | |
2529 | #endif | |
2530 | s->bsym->flags &= ~BSF_WEAK; | |
2531 | s->bsym->flags |= BSF_LOCAL; | |
2532 | } | |
2533 | } | |
2534 | } | |
2535 | ||
00f7efb6 | 2536 | void |
74937d39 | 2537 | S_SET_THREAD_LOCAL (symbolS *s) |
00f7efb6 | 2538 | { |
5014c2d2 AM |
2539 | if (s->flags.local_symbol) |
2540 | s = local_symbol_convert (s); | |
00f7efb6 JJ |
2541 | if (bfd_is_com_section (s->bsym->section) |
2542 | && (s->bsym->flags & BSF_THREAD_LOCAL) != 0) | |
2543 | return; | |
2544 | s->bsym->flags |= BSF_THREAD_LOCAL; | |
2545 | if ((s->bsym->flags & BSF_FUNCTION) != 0) | |
2546 | as_bad (_("Accessing function `%s' as thread-local object"), | |
2547 | S_GET_NAME (s)); | |
2548 | else if (! bfd_is_und_section (s->bsym->section) | |
2549 | && (s->bsym->section->flags & SEC_THREAD_LOCAL) == 0) | |
2550 | as_bad (_("Accessing `%s' as thread-local object"), | |
2551 | S_GET_NAME (s)); | |
2552 | } | |
2553 | ||
252b5132 | 2554 | void |
977cdf5a | 2555 | S_SET_NAME (symbolS *s, const char *name) |
252b5132 | 2556 | { |
5014c2d2 AM |
2557 | s->name = name; |
2558 | if (s->flags.local_symbol) | |
2559 | return; | |
252b5132 RH |
2560 | s->bsym->name = name; |
2561 | } | |
49309057 | 2562 | |
9497f5ac NC |
2563 | void |
2564 | S_SET_VOLATILE (symbolS *s) | |
2565 | { | |
5014c2d2 AM |
2566 | if (s->flags.local_symbol) |
2567 | s = local_symbol_convert (s); | |
3c0d9d71 | 2568 | s->flags.volatil = 1; |
9497f5ac NC |
2569 | } |
2570 | ||
92757bc9 JB |
2571 | void |
2572 | S_CLEAR_VOLATILE (symbolS *s) | |
2573 | { | |
5014c2d2 | 2574 | if (!s->flags.local_symbol) |
3c0d9d71 | 2575 | s->flags.volatil = 0; |
92757bc9 JB |
2576 | } |
2577 | ||
9497f5ac NC |
2578 | void |
2579 | S_SET_FORWARD_REF (symbolS *s) | |
2580 | { | |
5014c2d2 AM |
2581 | if (s->flags.local_symbol) |
2582 | s = local_symbol_convert (s); | |
3c0d9d71 | 2583 | s->flags.forward_ref = 1; |
9497f5ac NC |
2584 | } |
2585 | ||
49309057 ILT |
2586 | /* Return the previous symbol in a chain. */ |
2587 | ||
2588 | symbolS * | |
74937d39 | 2589 | symbol_previous (symbolS *s) |
49309057 | 2590 | { |
5014c2d2 | 2591 | if (s->flags.local_symbol) |
49309057 | 2592 | abort (); |
5014c2d2 | 2593 | return s->x->previous; |
49309057 ILT |
2594 | } |
2595 | ||
49309057 ILT |
2596 | /* Return the next symbol in a chain. */ |
2597 | ||
2598 | symbolS * | |
74937d39 | 2599 | symbol_next (symbolS *s) |
49309057 | 2600 | { |
5014c2d2 | 2601 | if (s->flags.local_symbol) |
49309057 | 2602 | abort (); |
5014c2d2 | 2603 | return s->x->next; |
49309057 ILT |
2604 | } |
2605 | ||
2606 | /* Return a pointer to the value of a symbol as an expression. */ | |
2607 | ||
2608 | expressionS * | |
74937d39 | 2609 | symbol_get_value_expression (symbolS *s) |
49309057 | 2610 | { |
5014c2d2 AM |
2611 | if (s->flags.local_symbol) |
2612 | s = local_symbol_convert (s); | |
2613 | return &s->x->value; | |
49309057 ILT |
2614 | } |
2615 | ||
2616 | /* Set the value of a symbol to an expression. */ | |
2617 | ||
2618 | void | |
74937d39 | 2619 | symbol_set_value_expression (symbolS *s, const expressionS *exp) |
49309057 | 2620 | { |
5014c2d2 AM |
2621 | if (s->flags.local_symbol) |
2622 | s = local_symbol_convert (s); | |
2623 | s->x->value = *exp; | |
06e77878 | 2624 | S_CLEAR_WEAKREFR (s); |
49309057 ILT |
2625 | } |
2626 | ||
087d837e L |
2627 | /* Return whether 2 symbols are the same. */ |
2628 | ||
2629 | int | |
2630 | symbol_same_p (symbolS *s1, symbolS *s2) | |
2631 | { | |
087d837e L |
2632 | return s1 == s2; |
2633 | } | |
2634 | ||
be95a9c1 AM |
2635 | /* Return a pointer to the X_add_number component of a symbol. */ |
2636 | ||
514d955d | 2637 | offsetT * |
be95a9c1 AM |
2638 | symbol_X_add_number (symbolS *s) |
2639 | { | |
5014c2d2 | 2640 | if (s->flags.local_symbol) |
3c0d9d71 | 2641 | return (offsetT *) &((struct local_symbol *) s)->value; |
be95a9c1 | 2642 | |
5014c2d2 | 2643 | return &s->x->value.X_add_number; |
be95a9c1 AM |
2644 | } |
2645 | ||
b7d6ed97 RH |
2646 | /* Set the value of SYM to the current position in the current segment. */ |
2647 | ||
2648 | void | |
74937d39 | 2649 | symbol_set_value_now (symbolS *sym) |
b7d6ed97 RH |
2650 | { |
2651 | S_SET_SEGMENT (sym, now_seg); | |
2652 | S_SET_VALUE (sym, frag_now_fix ()); | |
2653 | symbol_set_frag (sym, frag_now); | |
2654 | } | |
2655 | ||
49309057 ILT |
2656 | /* Set the frag of a symbol. */ |
2657 | ||
2658 | void | |
74937d39 | 2659 | symbol_set_frag (symbolS *s, fragS *f) |
49309057 | 2660 | { |
5014c2d2 | 2661 | if (s->flags.local_symbol) |
49309057 | 2662 | { |
5014c2d2 | 2663 | ((struct local_symbol *) s)->frag = f; |
49309057 ILT |
2664 | return; |
2665 | } | |
3c0d9d71 | 2666 | s->frag = f; |
06e77878 | 2667 | S_CLEAR_WEAKREFR (s); |
49309057 ILT |
2668 | } |
2669 | ||
2670 | /* Return the frag of a symbol. */ | |
2671 | ||
2672 | fragS * | |
74937d39 | 2673 | symbol_get_frag (symbolS *s) |
49309057 | 2674 | { |
5014c2d2 AM |
2675 | if (s->flags.local_symbol) |
2676 | return ((struct local_symbol *) s)->frag; | |
3c0d9d71 | 2677 | return s->frag; |
49309057 ILT |
2678 | } |
2679 | ||
2680 | /* Mark a symbol as having been used. */ | |
2681 | ||
2682 | void | |
74937d39 | 2683 | symbol_mark_used (symbolS *s) |
49309057 | 2684 | { |
5014c2d2 | 2685 | if (s->flags.local_symbol) |
49309057 | 2686 | return; |
3c0d9d71 | 2687 | s->flags.used = 1; |
06e77878 | 2688 | if (S_IS_WEAKREFR (s)) |
5014c2d2 | 2689 | symbol_mark_used (s->x->value.X_add_symbol); |
49309057 ILT |
2690 | } |
2691 | ||
2692 | /* Clear the mark of whether a symbol has been used. */ | |
2693 | ||
2694 | void | |
74937d39 | 2695 | symbol_clear_used (symbolS *s) |
49309057 | 2696 | { |
5014c2d2 AM |
2697 | if (s->flags.local_symbol) |
2698 | s = local_symbol_convert (s); | |
3c0d9d71 | 2699 | s->flags.used = 0; |
49309057 ILT |
2700 | } |
2701 | ||
2702 | /* Return whether a symbol has been used. */ | |
2703 | ||
2704 | int | |
74937d39 | 2705 | symbol_used_p (symbolS *s) |
49309057 | 2706 | { |
5014c2d2 | 2707 | if (s->flags.local_symbol) |
49309057 | 2708 | return 1; |
3c0d9d71 | 2709 | return s->flags.used; |
49309057 ILT |
2710 | } |
2711 | ||
2712 | /* Mark a symbol as having been used in a reloc. */ | |
2713 | ||
2714 | void | |
74937d39 | 2715 | symbol_mark_used_in_reloc (symbolS *s) |
49309057 | 2716 | { |
5014c2d2 AM |
2717 | if (s->flags.local_symbol) |
2718 | s = local_symbol_convert (s); | |
3c0d9d71 | 2719 | s->flags.used_in_reloc = 1; |
49309057 ILT |
2720 | } |
2721 | ||
2722 | /* Clear the mark of whether a symbol has been used in a reloc. */ | |
2723 | ||
2724 | void | |
74937d39 | 2725 | symbol_clear_used_in_reloc (symbolS *s) |
49309057 | 2726 | { |
5014c2d2 | 2727 | if (s->flags.local_symbol) |
49309057 | 2728 | return; |
3c0d9d71 | 2729 | s->flags.used_in_reloc = 0; |
49309057 ILT |
2730 | } |
2731 | ||
2732 | /* Return whether a symbol has been used in a reloc. */ | |
2733 | ||
2734 | int | |
74937d39 | 2735 | symbol_used_in_reloc_p (symbolS *s) |
49309057 | 2736 | { |
5014c2d2 | 2737 | if (s->flags.local_symbol) |
49309057 | 2738 | return 0; |
3c0d9d71 | 2739 | return s->flags.used_in_reloc; |
49309057 ILT |
2740 | } |
2741 | ||
2742 | /* Mark a symbol as an MRI common symbol. */ | |
2743 | ||
2744 | void | |
74937d39 | 2745 | symbol_mark_mri_common (symbolS *s) |
49309057 | 2746 | { |
5014c2d2 AM |
2747 | if (s->flags.local_symbol) |
2748 | s = local_symbol_convert (s); | |
3c0d9d71 | 2749 | s->flags.mri_common = 1; |
49309057 ILT |
2750 | } |
2751 | ||
2752 | /* Clear the mark of whether a symbol is an MRI common symbol. */ | |
2753 | ||
2754 | void | |
74937d39 | 2755 | symbol_clear_mri_common (symbolS *s) |
49309057 | 2756 | { |
5014c2d2 | 2757 | if (s->flags.local_symbol) |
49309057 | 2758 | return; |
3c0d9d71 | 2759 | s->flags.mri_common = 0; |
49309057 ILT |
2760 | } |
2761 | ||
2762 | /* Return whether a symbol is an MRI common symbol. */ | |
2763 | ||
2764 | int | |
74937d39 | 2765 | symbol_mri_common_p (symbolS *s) |
49309057 | 2766 | { |
5014c2d2 | 2767 | if (s->flags.local_symbol) |
49309057 | 2768 | return 0; |
3c0d9d71 | 2769 | return s->flags.mri_common; |
49309057 ILT |
2770 | } |
2771 | ||
2772 | /* Mark a symbol as having been written. */ | |
2773 | ||
2774 | void | |
74937d39 | 2775 | symbol_mark_written (symbolS *s) |
49309057 | 2776 | { |
5014c2d2 | 2777 | if (s->flags.local_symbol) |
49309057 | 2778 | return; |
3c0d9d71 | 2779 | s->flags.written = 1; |
49309057 ILT |
2780 | } |
2781 | ||
2782 | /* Clear the mark of whether a symbol has been written. */ | |
2783 | ||
2784 | void | |
74937d39 | 2785 | symbol_clear_written (symbolS *s) |
49309057 | 2786 | { |
5014c2d2 | 2787 | if (s->flags.local_symbol) |
49309057 | 2788 | return; |
3c0d9d71 | 2789 | s->flags.written = 0; |
49309057 ILT |
2790 | } |
2791 | ||
2792 | /* Return whether a symbol has been written. */ | |
2793 | ||
2794 | int | |
74937d39 | 2795 | symbol_written_p (symbolS *s) |
49309057 | 2796 | { |
5014c2d2 | 2797 | if (s->flags.local_symbol) |
49309057 | 2798 | return 0; |
3c0d9d71 | 2799 | return s->flags.written; |
49309057 ILT |
2800 | } |
2801 | ||
2802 | /* Mark a symbol has having been resolved. */ | |
2803 | ||
2804 | void | |
74937d39 | 2805 | symbol_mark_resolved (symbolS *s) |
49309057 | 2806 | { |
3c0d9d71 | 2807 | s->flags.resolved = 1; |
49309057 ILT |
2808 | } |
2809 | ||
2810 | /* Return whether a symbol has been resolved. */ | |
2811 | ||
2812 | int | |
74937d39 | 2813 | symbol_resolved_p (symbolS *s) |
49309057 | 2814 | { |
3c0d9d71 | 2815 | return s->flags.resolved; |
49309057 ILT |
2816 | } |
2817 | ||
2818 | /* Return whether a symbol is a section symbol. */ | |
2819 | ||
2820 | int | |
5014c2d2 | 2821 | symbol_section_p (symbolS *s) |
49309057 | 2822 | { |
5014c2d2 | 2823 | if (s->flags.local_symbol) |
49309057 | 2824 | return 0; |
49309057 | 2825 | return (s->bsym->flags & BSF_SECTION_SYM) != 0; |
49309057 ILT |
2826 | } |
2827 | ||
2828 | /* Return whether a symbol is equated to another symbol. */ | |
2829 | ||
2830 | int | |
74937d39 | 2831 | symbol_equated_p (symbolS *s) |
49309057 | 2832 | { |
5014c2d2 | 2833 | if (s->flags.local_symbol) |
49309057 | 2834 | return 0; |
5014c2d2 | 2835 | return s->x->value.X_op == O_symbol; |
49309057 ILT |
2836 | } |
2837 | ||
e0890092 AM |
2838 | /* Return whether a symbol is equated to another symbol, and should be |
2839 | treated specially when writing out relocs. */ | |
2840 | ||
2841 | int | |
74937d39 | 2842 | symbol_equated_reloc_p (symbolS *s) |
e0890092 | 2843 | { |
5014c2d2 | 2844 | if (s->flags.local_symbol) |
e0890092 AM |
2845 | return 0; |
2846 | /* X_op_symbol, normally not used for O_symbol, is set by | |
2847 | resolve_symbol_value to flag expression syms that have been | |
2848 | equated. */ | |
5014c2d2 | 2849 | return (s->x->value.X_op == O_symbol |
7be1c489 | 2850 | #if defined (OBJ_COFF) && defined (TE_PE) |
977cdf5a NC |
2851 | && ! S_IS_WEAK (s) |
2852 | #endif | |
5014c2d2 | 2853 | && ((s->flags.resolved && s->x->value.X_op_symbol != NULL) |
e0890092 AM |
2854 | || ! S_IS_DEFINED (s) |
2855 | || S_IS_COMMON (s))); | |
2856 | } | |
2857 | ||
49309057 ILT |
2858 | /* Return whether a symbol has a constant value. */ |
2859 | ||
2860 | int | |
74937d39 | 2861 | symbol_constant_p (symbolS *s) |
49309057 | 2862 | { |
5014c2d2 | 2863 | if (s->flags.local_symbol) |
49309057 | 2864 | return 1; |
5014c2d2 | 2865 | return s->x->value.X_op == O_constant; |
49309057 ILT |
2866 | } |
2867 | ||
bdf128d6 JB |
2868 | /* Return whether a symbol was cloned and thus removed from the global |
2869 | symbol list. */ | |
2870 | ||
2871 | int | |
2872 | symbol_shadow_p (symbolS *s) | |
2873 | { | |
5014c2d2 | 2874 | if (s->flags.local_symbol) |
bdf128d6 | 2875 | return 0; |
5014c2d2 | 2876 | return s->x->next == s; |
bdf128d6 JB |
2877 | } |
2878 | ||
5014c2d2 | 2879 | /* If S is a struct symbol return S, otherwise return NULL. */ |
8d1015a8 AM |
2880 | |
2881 | symbolS * | |
2882 | symbol_symbolS (symbolS *s) | |
2883 | { | |
5014c2d2 | 2884 | if (s->flags.local_symbol) |
8d1015a8 AM |
2885 | return NULL; |
2886 | return s; | |
2887 | } | |
2888 | ||
49309057 ILT |
2889 | /* Return the BFD symbol for a symbol. */ |
2890 | ||
2891 | asymbol * | |
74937d39 | 2892 | symbol_get_bfdsym (symbolS *s) |
49309057 | 2893 | { |
5014c2d2 AM |
2894 | if (s->flags.local_symbol) |
2895 | s = local_symbol_convert (s); | |
49309057 ILT |
2896 | return s->bsym; |
2897 | } | |
2898 | ||
2899 | /* Set the BFD symbol for a symbol. */ | |
2900 | ||
2901 | void | |
74937d39 | 2902 | symbol_set_bfdsym (symbolS *s, asymbol *bsym) |
49309057 | 2903 | { |
5014c2d2 AM |
2904 | if (s->flags.local_symbol) |
2905 | s = local_symbol_convert (s); | |
22fe14ad NC |
2906 | /* Usually, it is harmless to reset a symbol to a BFD section |
2907 | symbol. For example, obj_elf_change_section sets the BFD symbol | |
2908 | of an old symbol with the newly created section symbol. But when | |
2909 | we have multiple sections with the same name, the newly created | |
2910 | section may have the same name as an old section. We check if the | |
2911 | old symbol has been already marked as a section symbol before | |
2912 | resetting it. */ | |
2913 | if ((s->bsym->flags & BSF_SECTION_SYM) == 0) | |
2914 | s->bsym = bsym; | |
2915 | /* else XXX - What do we do now ? */ | |
49309057 ILT |
2916 | } |
2917 | ||
49309057 ILT |
2918 | #ifdef OBJ_SYMFIELD_TYPE |
2919 | ||
2920 | /* Get a pointer to the object format information for a symbol. */ | |
2921 | ||
2922 | OBJ_SYMFIELD_TYPE * | |
74937d39 | 2923 | symbol_get_obj (symbolS *s) |
49309057 | 2924 | { |
5014c2d2 AM |
2925 | if (s->flags.local_symbol) |
2926 | s = local_symbol_convert (s); | |
2927 | return &s->x->obj; | |
49309057 ILT |
2928 | } |
2929 | ||
2930 | /* Set the object format information for a symbol. */ | |
2931 | ||
2932 | void | |
74937d39 | 2933 | symbol_set_obj (symbolS *s, OBJ_SYMFIELD_TYPE *o) |
49309057 | 2934 | { |
5014c2d2 AM |
2935 | if (s->flags.local_symbol) |
2936 | s = local_symbol_convert (s); | |
2937 | s->x->obj = *o; | |
49309057 ILT |
2938 | } |
2939 | ||
2940 | #endif /* OBJ_SYMFIELD_TYPE */ | |
2941 | ||
2942 | #ifdef TC_SYMFIELD_TYPE | |
2943 | ||
2944 | /* Get a pointer to the processor information for a symbol. */ | |
2945 | ||
2946 | TC_SYMFIELD_TYPE * | |
74937d39 | 2947 | symbol_get_tc (symbolS *s) |
49309057 | 2948 | { |
5014c2d2 AM |
2949 | if (s->flags.local_symbol) |
2950 | s = local_symbol_convert (s); | |
2951 | return &s->x->tc; | |
49309057 ILT |
2952 | } |
2953 | ||
2954 | /* Set the processor information for a symbol. */ | |
2955 | ||
2956 | void | |
74937d39 | 2957 | symbol_set_tc (symbolS *s, TC_SYMFIELD_TYPE *o) |
49309057 | 2958 | { |
5014c2d2 AM |
2959 | if (s->flags.local_symbol) |
2960 | s = local_symbol_convert (s); | |
2961 | s->x->tc = *o; | |
49309057 ILT |
2962 | } |
2963 | ||
2964 | #endif /* TC_SYMFIELD_TYPE */ | |
2965 | ||
252b5132 | 2966 | void |
74937d39 | 2967 | symbol_begin (void) |
252b5132 RH |
2968 | { |
2969 | symbol_lastP = NULL; | |
7c743825 | 2970 | symbol_rootP = NULL; /* In case we have 0 symbols (!!) */ |
d3b740ca ML |
2971 | sy_hash = htab_create_alloc (16, hash_symbol_entry, eq_symbol_entry, |
2972 | NULL, xcalloc, free); | |
252b5132 | 2973 | |
252b5132 | 2974 | #if defined (EMIT_SECTION_SYMBOLS) || !defined (RELOC_REQUIRES_SYMBOL) |
45dfa85a | 2975 | abs_symbol.bsym = bfd_abs_section_ptr->symbol; |
252b5132 | 2976 | #endif |
5014c2d2 AM |
2977 | abs_symbol.x = &abs_symbol_x; |
2978 | abs_symbol.x->value.X_op = O_constant; | |
3c0d9d71 | 2979 | abs_symbol.frag = &zero_address_frag; |
252b5132 RH |
2980 | |
2981 | if (LOCAL_LABELS_FB) | |
2982 | fb_label_init (); | |
2983 | } | |
4a826962 MR |
2984 | |
2985 | void | |
2986 | dot_symbol_init (void) | |
2987 | { | |
5014c2d2 AM |
2988 | dot_symbol.name = "."; |
2989 | dot_symbol.flags.forward_ref = 1; | |
4a826962 MR |
2990 | dot_symbol.bsym = bfd_make_empty_symbol (stdoutput); |
2991 | if (dot_symbol.bsym == NULL) | |
2992 | as_fatal ("bfd_make_empty_symbol: %s", bfd_errmsg (bfd_get_error ())); | |
2993 | dot_symbol.bsym->name = "."; | |
5014c2d2 AM |
2994 | dot_symbol.x = &dot_symbol_x; |
2995 | dot_symbol.x->value.X_op = O_constant; | |
4a826962 | 2996 | } |
252b5132 RH |
2997 | \f |
2998 | int indent_level; | |
2999 | ||
3000 | /* Maximum indent level. | |
3001 | Available for modification inside a gdb session. */ | |
87c245cc | 3002 | static int max_indent_level = 8; |
252b5132 | 3003 | |
252b5132 | 3004 | void |
74937d39 | 3005 | print_symbol_value_1 (FILE *file, symbolS *sym) |
252b5132 RH |
3006 | { |
3007 | const char *name = S_GET_NAME (sym); | |
3008 | if (!name || !name[0]) | |
3009 | name = "(unnamed)"; | |
d2df793a NC |
3010 | fprintf (file, "sym "); |
3011 | fprintf_vma (file, (bfd_vma) ((bfd_hostptr_t) sym)); | |
3012 | fprintf (file, " %s", name); | |
49309057 | 3013 | |
5014c2d2 | 3014 | if (sym->flags.local_symbol) |
49309057 ILT |
3015 | { |
3016 | struct local_symbol *locsym = (struct local_symbol *) sym; | |
d2df793a | 3017 | |
5014c2d2 AM |
3018 | if (locsym->frag != &zero_address_frag |
3019 | && locsym->frag != NULL) | |
d2df793a NC |
3020 | { |
3021 | fprintf (file, " frag "); | |
5014c2d2 | 3022 | fprintf_vma (file, (bfd_vma) ((bfd_hostptr_t) locsym->frag)); |
3c0d9d71 AM |
3023 | } |
3024 | if (locsym->flags.resolved) | |
49309057 ILT |
3025 | fprintf (file, " resolved"); |
3026 | fprintf (file, " local"); | |
3027 | } | |
3028 | else | |
3029 | { | |
3c0d9d71 | 3030 | if (sym->frag != &zero_address_frag) |
d2df793a NC |
3031 | { |
3032 | fprintf (file, " frag "); | |
3c0d9d71 | 3033 | fprintf_vma (file, (bfd_vma) ((bfd_hostptr_t) sym->frag)); |
d2df793a | 3034 | } |
3c0d9d71 | 3035 | if (sym->flags.written) |
49309057 | 3036 | fprintf (file, " written"); |
3c0d9d71 | 3037 | if (sym->flags.resolved) |
49309057 | 3038 | fprintf (file, " resolved"); |
3c0d9d71 | 3039 | else if (sym->flags.resolving) |
49309057 | 3040 | fprintf (file, " resolving"); |
3c0d9d71 | 3041 | if (sym->flags.used_in_reloc) |
49309057 | 3042 | fprintf (file, " used-in-reloc"); |
3c0d9d71 | 3043 | if (sym->flags.used) |
49309057 ILT |
3044 | fprintf (file, " used"); |
3045 | if (S_IS_LOCAL (sym)) | |
3046 | fprintf (file, " local"); | |
e97b3f28 | 3047 | if (S_IS_EXTERNAL (sym)) |
49309057 | 3048 | fprintf (file, " extern"); |
06e77878 AO |
3049 | if (S_IS_WEAK (sym)) |
3050 | fprintf (file, " weak"); | |
49309057 ILT |
3051 | if (S_IS_DEBUG (sym)) |
3052 | fprintf (file, " debug"); | |
3053 | if (S_IS_DEFINED (sym)) | |
3054 | fprintf (file, " defined"); | |
3055 | } | |
06e77878 AO |
3056 | if (S_IS_WEAKREFR (sym)) |
3057 | fprintf (file, " weakrefr"); | |
3058 | if (S_IS_WEAKREFD (sym)) | |
3059 | fprintf (file, " weakrefd"); | |
252b5132 | 3060 | fprintf (file, " %s", segment_name (S_GET_SEGMENT (sym))); |
49309057 | 3061 | if (symbol_resolved_p (sym)) |
252b5132 RH |
3062 | { |
3063 | segT s = S_GET_SEGMENT (sym); | |
3064 | ||
3065 | if (s != undefined_section | |
411863a4 | 3066 | && s != expr_section) |
0af1713e | 3067 | fprintf (file, " %lx", (unsigned long) S_GET_VALUE (sym)); |
252b5132 RH |
3068 | } |
3069 | else if (indent_level < max_indent_level | |
3070 | && S_GET_SEGMENT (sym) != undefined_section) | |
3071 | { | |
3072 | indent_level++; | |
3073 | fprintf (file, "\n%*s<", indent_level * 4, ""); | |
5014c2d2 | 3074 | if (sym->flags.local_symbol) |
49309057 | 3075 | fprintf (file, "constant %lx", |
3c0d9d71 | 3076 | (unsigned long) ((struct local_symbol *) sym)->value); |
49309057 | 3077 | else |
5014c2d2 | 3078 | print_expr_1 (file, &sym->x->value); |
252b5132 RH |
3079 | fprintf (file, ">"); |
3080 | indent_level--; | |
3081 | } | |
3082 | fflush (file); | |
3083 | } | |
3084 | ||
3085 | void | |
74937d39 | 3086 | print_symbol_value (symbolS *sym) |
252b5132 RH |
3087 | { |
3088 | indent_level = 0; | |
3089 | print_symbol_value_1 (stderr, sym); | |
3090 | fprintf (stderr, "\n"); | |
3091 | } | |
3092 | ||
3093 | static void | |
74937d39 | 3094 | print_binary (FILE *file, const char *name, expressionS *exp) |
252b5132 RH |
3095 | { |
3096 | indent_level++; | |
3097 | fprintf (file, "%s\n%*s<", name, indent_level * 4, ""); | |
3098 | print_symbol_value_1 (file, exp->X_add_symbol); | |
3099 | fprintf (file, ">\n%*s<", indent_level * 4, ""); | |
3100 | print_symbol_value_1 (file, exp->X_op_symbol); | |
3101 | fprintf (file, ">"); | |
3102 | indent_level--; | |
3103 | } | |
3104 | ||
3105 | void | |
74937d39 | 3106 | print_expr_1 (FILE *file, expressionS *exp) |
252b5132 | 3107 | { |
d2df793a NC |
3108 | fprintf (file, "expr "); |
3109 | fprintf_vma (file, (bfd_vma) ((bfd_hostptr_t) exp)); | |
3110 | fprintf (file, " "); | |
252b5132 RH |
3111 | switch (exp->X_op) |
3112 | { | |
3113 | case O_illegal: | |
3114 | fprintf (file, "illegal"); | |
3115 | break; | |
3116 | case O_absent: | |
3117 | fprintf (file, "absent"); | |
3118 | break; | |
3119 | case O_constant: | |
0af1713e | 3120 | fprintf (file, "constant %lx", (unsigned long) exp->X_add_number); |
252b5132 RH |
3121 | break; |
3122 | case O_symbol: | |
3123 | indent_level++; | |
3124 | fprintf (file, "symbol\n%*s<", indent_level * 4, ""); | |
3125 | print_symbol_value_1 (file, exp->X_add_symbol); | |
3126 | fprintf (file, ">"); | |
3127 | maybe_print_addnum: | |
3128 | if (exp->X_add_number) | |
3129 | fprintf (file, "\n%*s%lx", indent_level * 4, "", | |
0af1713e | 3130 | (unsigned long) exp->X_add_number); |
252b5132 RH |
3131 | indent_level--; |
3132 | break; | |
3133 | case O_register: | |
3134 | fprintf (file, "register #%d", (int) exp->X_add_number); | |
3135 | break; | |
3136 | case O_big: | |
3137 | fprintf (file, "big"); | |
3138 | break; | |
3139 | case O_uminus: | |
3140 | fprintf (file, "uminus -<"); | |
3141 | indent_level++; | |
3142 | print_symbol_value_1 (file, exp->X_add_symbol); | |
3143 | fprintf (file, ">"); | |
3144 | goto maybe_print_addnum; | |
3145 | case O_bit_not: | |
3146 | fprintf (file, "bit_not"); | |
3147 | break; | |
3148 | case O_multiply: | |
3149 | print_binary (file, "multiply", exp); | |
3150 | break; | |
3151 | case O_divide: | |
3152 | print_binary (file, "divide", exp); | |
3153 | break; | |
3154 | case O_modulus: | |
3155 | print_binary (file, "modulus", exp); | |
3156 | break; | |
3157 | case O_left_shift: | |
3158 | print_binary (file, "lshift", exp); | |
3159 | break; | |
3160 | case O_right_shift: | |
3161 | print_binary (file, "rshift", exp); | |
3162 | break; | |
3163 | case O_bit_inclusive_or: | |
3164 | print_binary (file, "bit_ior", exp); | |
3165 | break; | |
3166 | case O_bit_exclusive_or: | |
3167 | print_binary (file, "bit_xor", exp); | |
3168 | break; | |
3169 | case O_bit_and: | |
3170 | print_binary (file, "bit_and", exp); | |
3171 | break; | |
3172 | case O_eq: | |
3173 | print_binary (file, "eq", exp); | |
3174 | break; | |
3175 | case O_ne: | |
3176 | print_binary (file, "ne", exp); | |
3177 | break; | |
3178 | case O_lt: | |
3179 | print_binary (file, "lt", exp); | |
3180 | break; | |
3181 | case O_le: | |
3182 | print_binary (file, "le", exp); | |
3183 | break; | |
3184 | case O_ge: | |
3185 | print_binary (file, "ge", exp); | |
3186 | break; | |
3187 | case O_gt: | |
3188 | print_binary (file, "gt", exp); | |
3189 | break; | |
3190 | case O_logical_and: | |
3191 | print_binary (file, "logical_and", exp); | |
3192 | break; | |
3193 | case O_logical_or: | |
3194 | print_binary (file, "logical_or", exp); | |
3195 | break; | |
3196 | case O_add: | |
3197 | indent_level++; | |
3198 | fprintf (file, "add\n%*s<", indent_level * 4, ""); | |
3199 | print_symbol_value_1 (file, exp->X_add_symbol); | |
3200 | fprintf (file, ">\n%*s<", indent_level * 4, ""); | |
3201 | print_symbol_value_1 (file, exp->X_op_symbol); | |
3202 | fprintf (file, ">"); | |
3203 | goto maybe_print_addnum; | |
3204 | case O_subtract: | |
3205 | indent_level++; | |
3206 | fprintf (file, "subtract\n%*s<", indent_level * 4, ""); | |
3207 | print_symbol_value_1 (file, exp->X_add_symbol); | |
3208 | fprintf (file, ">\n%*s<", indent_level * 4, ""); | |
3209 | print_symbol_value_1 (file, exp->X_op_symbol); | |
3210 | fprintf (file, ">"); | |
3211 | goto maybe_print_addnum; | |
3212 | default: | |
3213 | fprintf (file, "{unknown opcode %d}", (int) exp->X_op); | |
3214 | break; | |
3215 | } | |
3216 | fflush (stdout); | |
3217 | } | |
3218 | ||
3219 | void | |
74937d39 | 3220 | print_expr (expressionS *exp) |
252b5132 RH |
3221 | { |
3222 | print_expr_1 (stderr, exp); | |
3223 | fprintf (stderr, "\n"); | |
3224 | } | |
3225 | ||
3226 | void | |
74937d39 | 3227 | symbol_print_statistics (FILE *file) |
252b5132 | 3228 | { |
d3b740ca | 3229 | htab_print_statistics (file, "symbol table", sy_hash); |
49309057 ILT |
3230 | fprintf (file, "%lu mini local symbols created, %lu converted\n", |
3231 | local_symbol_count, local_symbol_conversion_count); | |
252b5132 | 3232 | } |
280d71bf DB |
3233 | |
3234 | #ifdef OBJ_COMPLEX_RELC | |
3235 | ||
3236 | /* Convert given symbol to a new complex-relocation symbol name. This | |
6f12865c | 3237 | may be a recursive function, since it might be called for non-leaf |
280d71bf | 3238 | nodes (plain symbols) in the expression tree. The caller owns the |
6f12865c AM |
3239 | returning string, so should free it eventually. Errors are |
3240 | indicated via as_bad and a NULL return value. The given symbol | |
3c0d9d71 | 3241 | is marked with used_in_reloc. */ |
280d71bf DB |
3242 | |
3243 | char * | |
3244 | symbol_relc_make_sym (symbolS * sym) | |
3245 | { | |
3246 | char * terminal = NULL; | |
3247 | const char * sname; | |
3248 | char typetag; | |
3249 | int sname_len; | |
3250 | ||
9c2799c2 | 3251 | gas_assert (sym != NULL); |
280d71bf DB |
3252 | |
3253 | /* Recurse to symbol_relc_make_expr if this symbol | |
3254 | is defined as an expression or a plain value. */ | |
3255 | if ( S_GET_SEGMENT (sym) == expr_section | |
3256 | || S_GET_SEGMENT (sym) == absolute_section) | |
be0d3bbb | 3257 | return symbol_relc_make_expr (symbol_get_value_expression (sym)); |
280d71bf | 3258 | |
2469b3c5 | 3259 | /* This may be a "fake symbol", referring to ".". |
280d71bf DB |
3260 | Write out a special null symbol to refer to this position. */ |
3261 | if (! strcmp (S_GET_NAME (sym), FAKE_LABEL_NAME)) | |
3262 | return xstrdup ("."); | |
3263 | ||
3264 | /* We hope this is a plain leaf symbol. Construct the encoding | |
3265 | as {S,s}II...:CCCCCCC.... | |
3266 | where 'S'/'s' means section symbol / plain symbol | |
3267 | III is decimal for the symbol name length | |
3268 | CCC is the symbol name itself. */ | |
3269 | symbol_mark_used_in_reloc (sym); | |
3270 | ||
3271 | sname = S_GET_NAME (sym); | |
3272 | sname_len = strlen (sname); | |
3273 | typetag = symbol_section_p (sym) ? 'S' : 's'; | |
3274 | ||
add39d23 TS |
3275 | terminal = XNEWVEC (char, (1 /* S or s */ |
3276 | + 8 /* sname_len in decimal */ | |
3277 | + 1 /* _ spacer */ | |
3278 | + sname_len /* name itself */ | |
3279 | + 1 /* \0 */ )); | |
280d71bf DB |
3280 | |
3281 | sprintf (terminal, "%c%d:%s", typetag, sname_len, sname); | |
3282 | return terminal; | |
3283 | } | |
3284 | ||
3285 | /* Convert given value to a new complex-relocation symbol name. This | |
3286 | is a non-recursive function, since it is be called for leaf nodes | |
3287 | (plain values) in the expression tree. The caller owns the | |
3288 | returning string, so should free() it eventually. No errors. */ | |
3289 | ||
3290 | char * | |
3291 | symbol_relc_make_value (offsetT val) | |
3292 | { | |
325801bd | 3293 | char * terminal = XNEWVEC (char, 28); /* Enough for long long. */ |
280d71bf DB |
3294 | |
3295 | terminal[0] = '#'; | |
1a412f5f | 3296 | bfd_sprintf_vma (stdoutput, terminal + 1, val); |
280d71bf DB |
3297 | return terminal; |
3298 | } | |
3299 | ||
3300 | /* Convert given expression to a new complex-relocation symbol name. | |
3301 | This is a recursive function, since it traverses the entire given | |
3302 | expression tree. The caller owns the returning string, so should | |
3303 | free() it eventually. Errors are indicated via as_bad() and a NULL | |
3304 | return value. */ | |
3305 | ||
3306 | char * | |
3307 | symbol_relc_make_expr (expressionS * exp) | |
3308 | { | |
b9bb4a93 | 3309 | const char * opstr = NULL; /* Operator prefix string. */ |
280d71bf DB |
3310 | int arity = 0; /* Arity of this operator. */ |
3311 | char * operands[3]; /* Up to three operands. */ | |
3312 | char * concat_string = NULL; | |
3313 | ||
3314 | operands[0] = operands[1] = operands[2] = NULL; | |
3315 | ||
9c2799c2 | 3316 | gas_assert (exp != NULL); |
280d71bf DB |
3317 | |
3318 | /* Match known operators -> fill in opstr, arity, operands[] and fall | |
34bca508 | 3319 | through to construct subexpression fragments; may instead return |
280d71bf DB |
3320 | string directly for leaf nodes. */ |
3321 | ||
34bca508 | 3322 | /* See expr.h for the meaning of all these enums. Many operators |
280d71bf DB |
3323 | have an unnatural arity (X_add_number implicitly added). The |
3324 | conversion logic expands them to explicit "+" subexpressions. */ | |
3325 | ||
3326 | switch (exp->X_op) | |
3327 | { | |
3328 | default: | |
3329 | as_bad ("Unknown expression operator (enum %d)", exp->X_op); | |
3330 | break; | |
3331 | ||
3332 | /* Leaf nodes. */ | |
3333 | case O_constant: | |
3334 | return symbol_relc_make_value (exp->X_add_number); | |
3335 | ||
3336 | case O_symbol: | |
34bca508 L |
3337 | if (exp->X_add_number) |
3338 | { | |
3339 | arity = 2; | |
3340 | opstr = "+"; | |
280d71bf DB |
3341 | operands[0] = symbol_relc_make_sym (exp->X_add_symbol); |
3342 | operands[1] = symbol_relc_make_value (exp->X_add_number); | |
3343 | break; | |
3344 | } | |
3345 | else | |
3346 | return symbol_relc_make_sym (exp->X_add_symbol); | |
3347 | ||
3348 | /* Helper macros for nesting nodes. */ | |
3349 | ||
3c0d9d71 | 3350 | #define HANDLE_XADD_OPT1(str_) \ |
280d71bf | 3351 | if (exp->X_add_number) \ |
3c0d9d71 AM |
3352 | { \ |
3353 | arity = 2; \ | |
3354 | opstr = "+:" str_; \ | |
3355 | operands[0] = symbol_relc_make_sym (exp->X_add_symbol); \ | |
3356 | operands[1] = symbol_relc_make_value (exp->X_add_number); \ | |
3357 | break; \ | |
3358 | } \ | |
280d71bf | 3359 | else \ |
3c0d9d71 AM |
3360 | { \ |
3361 | arity = 1; \ | |
3362 | opstr = str_; \ | |
3363 | operands[0] = symbol_relc_make_sym (exp->X_add_symbol); \ | |
3364 | } \ | |
280d71bf | 3365 | break |
34bca508 | 3366 | |
3c0d9d71 | 3367 | #define HANDLE_XADD_OPT2(str_) \ |
280d71bf | 3368 | if (exp->X_add_number) \ |
3c0d9d71 AM |
3369 | { \ |
3370 | arity = 3; \ | |
3371 | opstr = "+:" str_; \ | |
3372 | operands[0] = symbol_relc_make_sym (exp->X_add_symbol); \ | |
3373 | operands[1] = symbol_relc_make_sym (exp->X_op_symbol); \ | |
3374 | operands[2] = symbol_relc_make_value (exp->X_add_number); \ | |
3375 | } \ | |
280d71bf | 3376 | else \ |
3c0d9d71 AM |
3377 | { \ |
3378 | arity = 2; \ | |
3379 | opstr = str_; \ | |
3380 | operands[0] = symbol_relc_make_sym (exp->X_add_symbol); \ | |
3381 | operands[1] = symbol_relc_make_sym (exp->X_op_symbol); \ | |
3382 | } \ | |
280d71bf DB |
3383 | break |
3384 | ||
3385 | /* Nesting nodes. */ | |
3386 | ||
3c0d9d71 AM |
3387 | case O_uminus: HANDLE_XADD_OPT1 ("0-"); |
3388 | case O_bit_not: HANDLE_XADD_OPT1 ("~"); | |
3389 | case O_logical_not: HANDLE_XADD_OPT1 ("!"); | |
3390 | case O_multiply: HANDLE_XADD_OPT2 ("*"); | |
3391 | case O_divide: HANDLE_XADD_OPT2 ("/"); | |
3392 | case O_modulus: HANDLE_XADD_OPT2 ("%"); | |
3393 | case O_left_shift: HANDLE_XADD_OPT2 ("<<"); | |
3394 | case O_right_shift: HANDLE_XADD_OPT2 (">>"); | |
280d71bf DB |
3395 | case O_bit_inclusive_or: HANDLE_XADD_OPT2 ("|"); |
3396 | case O_bit_exclusive_or: HANDLE_XADD_OPT2 ("^"); | |
3c0d9d71 AM |
3397 | case O_bit_and: HANDLE_XADD_OPT2 ("&"); |
3398 | case O_add: HANDLE_XADD_OPT2 ("+"); | |
3399 | case O_subtract: HANDLE_XADD_OPT2 ("-"); | |
3400 | case O_eq: HANDLE_XADD_OPT2 ("=="); | |
3401 | case O_ne: HANDLE_XADD_OPT2 ("!="); | |
3402 | case O_lt: HANDLE_XADD_OPT2 ("<"); | |
3403 | case O_le: HANDLE_XADD_OPT2 ("<="); | |
3404 | case O_ge: HANDLE_XADD_OPT2 (">="); | |
3405 | case O_gt: HANDLE_XADD_OPT2 (">"); | |
3406 | case O_logical_and: HANDLE_XADD_OPT2 ("&&"); | |
3407 | case O_logical_or: HANDLE_XADD_OPT2 ("||"); | |
280d71bf DB |
3408 | } |
3409 | ||
3410 | /* Validate & reject early. */ | |
3411 | if (arity >= 1 && ((operands[0] == NULL) || (strlen (operands[0]) == 0))) | |
3412 | opstr = NULL; | |
3413 | if (arity >= 2 && ((operands[1] == NULL) || (strlen (operands[1]) == 0))) | |
3414 | opstr = NULL; | |
3415 | if (arity >= 3 && ((operands[2] == NULL) || (strlen (operands[2]) == 0))) | |
3416 | opstr = NULL; | |
3417 | ||
3418 | if (opstr == NULL) | |
3419 | concat_string = NULL; | |
29a2809e TS |
3420 | else if (arity == 0) |
3421 | concat_string = xstrdup (opstr); | |
3422 | else if (arity == 1) | |
3423 | concat_string = concat (opstr, ":", operands[0], (char *) NULL); | |
3424 | else if (arity == 2) | |
3425 | concat_string = concat (opstr, ":", operands[0], ":", operands[1], | |
3426 | (char *) NULL); | |
280d71bf | 3427 | else |
29a2809e TS |
3428 | concat_string = concat (opstr, ":", operands[0], ":", operands[1], ":", |
3429 | operands[2], (char *) NULL); | |
280d71bf DB |
3430 | |
3431 | /* Free operand strings (not opstr). */ | |
3432 | if (arity >= 1) xfree (operands[0]); | |
3433 | if (arity >= 2) xfree (operands[1]); | |
3434 | if (arity >= 3) xfree (operands[2]); | |
3435 | ||
3436 | return concat_string; | |
3437 | } | |
3438 | ||
3439 | #endif |