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